diff options
Diffstat (limited to 'arch/mips/pci')
107 files changed, 13403 insertions, 5832 deletions
diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile index 16205b58733..ff8a5539b36 100644 --- a/arch/mips/pci/Makefile +++ b/arch/mips/pci/Makefile @@ -7,53 +7,59 @@ obj-y += pci.o # # PCI bus host bridge specific code # -obj-$(CONFIG_ITE_BOARD_GEN) += ops-it8172.o obj-$(CONFIG_MIPS_BONITO64) += ops-bonito64.o -obj-$(CONFIG_MIPS_GT64111) += ops-gt64111.o -obj-$(CONFIG_MIPS_GT64120) += ops-gt64120.o -obj-$(CONFIG_MIPS_GT96100) += ops-gt96100.o -obj-$(CONFIG_PCI_MARVELL) += ops-marvell.o +obj-$(CONFIG_PCI_GT64XXX_PCI0) += ops-gt64xxx_pci0.o obj-$(CONFIG_MIPS_MSC) += ops-msc.o obj-$(CONFIG_MIPS_NILE4) += ops-nile4.o -obj-$(CONFIG_MIPS_TX3927) += ops-tx3927.o +obj-$(CONFIG_SOC_TX3927) += ops-tx3927.o obj-$(CONFIG_PCI_VR41XX) += ops-vr41xx.o pci-vr41xx.o -obj-$(CONFIG_NEC_CMBVR4133) += fixup-vr4133.o - +obj-$(CONFIG_NEC_MARKEINS) += ops-emma2rh.o pci-emma2rh.o fixup-emma2rh.o +obj-$(CONFIG_PCI_TX4927) += ops-tx4927.o +obj-$(CONFIG_BCM47XX) += pci-bcm47xx.o +obj-$(CONFIG_BCM63XX) += pci-bcm63xx.o fixup-bcm63xx.o \ + ops-bcm63xx.o +obj-$(CONFIG_MIPS_ALCHEMY) += pci-alchemy.o +obj-$(CONFIG_SOC_AR71XX) += pci-ar71xx.o +obj-$(CONFIG_PCI_AR724X) += pci-ar724x.o +obj-$(CONFIG_MIPS_PCI_VIRTIO) += pci-virtio-guest.o # # These are still pretty much in the old state, watch, go blind. # -obj-$(CONFIG_DDB5074) += fixup-ddb5074.o pci-ddb5074.o ops-ddb5074.o -obj-$(CONFIG_DDB5476) += ops-ddb5476.o pci-ddb5476.o -obj-$(CONFIG_DDB5477) += fixup-ddb5477.o pci-ddb5477.o ops-ddb5477.o obj-$(CONFIG_LASAT) += pci-lasat.o -obj-$(CONFIG_MIPS_ATLAS) += fixup-atlas.o obj-$(CONFIG_MIPS_COBALT) += fixup-cobalt.o -obj-$(CONFIG_MIPS_EV96100) += fixup-ev64120.o -obj-$(CONFIG_MIPS_EV96100) += fixup-ev96100.o pci-ev96100.o -obj-$(CONFIG_MIPS_ITE8172) += fixup-ite8172g.o -obj-$(CONFIG_MIPS_IVR) += fixup-ivr.o -obj-$(CONFIG_SOC_AU1500) += fixup-au1000.o ops-au1000.o -obj-$(CONFIG_SOC_AU1550) += fixup-au1000.o ops-au1000.o -obj-$(CONFIG_SOC_PNX8550) += fixup-pnx8550.o ops-pnx8550.o -obj-$(CONFIG_MIPS_MALTA) += fixup-malta.o -obj-$(CONFIG_MOMENCO_JAGUAR_ATX)+= fixup-jaguar.o -obj-$(CONFIG_MOMENCO_OCELOT) += fixup-ocelot.o pci-ocelot.o -obj-$(CONFIG_MOMENCO_OCELOT_3) += fixup-ocelot3.o -obj-$(CONFIG_MOMENCO_OCELOT_C) += fixup-ocelot-c.o pci-ocelot-c.o -obj-$(CONFIG_MOMENCO_OCELOT_G) += fixup-ocelot-g.o pci-ocelot-g.o -obj-$(CONFIG_PMC_YOSEMITE) += fixup-yosemite.o ops-titan.o ops-titan-ht.o \ - pci-yosemite.o -obj-$(CONFIG_SGI_IP27) += pci-ip27.o +obj-$(CONFIG_LEMOTE_FULOONG2E) += fixup-fuloong2e.o ops-loongson2.o +obj-$(CONFIG_LEMOTE_MACH2F) += fixup-lemote2f.o ops-loongson2.o +obj-$(CONFIG_LEMOTE_MACH3A) += fixup-loongson3.o ops-loongson3.o +obj-$(CONFIG_MIPS_MALTA) += fixup-malta.o pci-malta.o +obj-$(CONFIG_PMC_MSP7120_GW) += fixup-pmcmsp.o ops-pmcmsp.o +obj-$(CONFIG_PMC_MSP7120_EVAL) += fixup-pmcmsp.o ops-pmcmsp.o +obj-$(CONFIG_PMC_MSP7120_FPGA) += fixup-pmcmsp.o ops-pmcmsp.o +obj-$(CONFIG_SGI_IP27) += ops-bridge.o pci-ip27.o obj-$(CONFIG_SGI_IP32) += fixup-ip32.o ops-mace.o pci-ip32.o obj-$(CONFIG_SIBYTE_SB1250) += fixup-sb1250.o pci-sb1250.o obj-$(CONFIG_SIBYTE_BCM112X) += fixup-sb1250.o pci-sb1250.o obj-$(CONFIG_SIBYTE_BCM1x80) += pci-bcm1480.o pci-bcm1480ht.o -obj-$(CONFIG_SNI_RM200_PCI) += fixup-sni.o ops-sni.o +obj-$(CONFIG_SNI_RM) += fixup-sni.o ops-sni.o +obj-$(CONFIG_LANTIQ) += fixup-lantiq.o +obj-$(CONFIG_PCI_LANTIQ) += pci-lantiq.o ops-lantiq.o +obj-$(CONFIG_SOC_RT3883) += pci-rt3883.o obj-$(CONFIG_TANBAC_TB0219) += fixup-tb0219.o obj-$(CONFIG_TANBAC_TB0226) += fixup-tb0226.o obj-$(CONFIG_TANBAC_TB0287) += fixup-tb0287.o -obj-$(CONFIG_TOSHIBA_JMR3927) += fixup-jmr3927.o pci-jmr3927.o -obj-$(CONFIG_TOSHIBA_RBTX4927) += fixup-rbtx4927.o ops-tx4927.o -obj-$(CONFIG_TOSHIBA_RBTX4938) += fixup-tx4938.o ops-tx4938.o +obj-$(CONFIG_TOSHIBA_JMR3927) += fixup-jmr3927.o +obj-$(CONFIG_SOC_TX4927) += pci-tx4927.o +obj-$(CONFIG_SOC_TX4938) += pci-tx4938.o +obj-$(CONFIG_SOC_TX4939) += pci-tx4939.o +obj-$(CONFIG_TOSHIBA_RBTX4927) += fixup-rbtx4927.o +obj-$(CONFIG_TOSHIBA_RBTX4938) += fixup-rbtx4938.o obj-$(CONFIG_VICTOR_MPC30X) += fixup-mpc30x.o obj-$(CONFIG_ZAO_CAPCELLA) += fixup-capcella.o +obj-$(CONFIG_MIKROTIK_RB532) += pci-rc32434.o ops-rc32434.o fixup-rc32434.o +obj-$(CONFIG_CAVIUM_OCTEON_SOC) += pci-octeon.o pcie-octeon.o +obj-$(CONFIG_CPU_XLR) += pci-xlr.o +obj-$(CONFIG_CPU_XLP) += pci-xlp.o + +ifdef CONFIG_PCI_MSI +obj-$(CONFIG_CAVIUM_OCTEON_SOC) += msi-octeon.o +obj-$(CONFIG_CPU_XLP) += msi-xlp.o +endif diff --git a/arch/mips/pci/fixup-atlas.c b/arch/mips/pci/fixup-atlas.c deleted file mode 100644 index 87920b24593..00000000000 --- a/arch/mips/pci/fixup-atlas.c +++ /dev/null @@ -1,92 +0,0 @@ -/* - * Copyright (C) 2003, 2004 Ralf Baechle (ralf@linux-mips.org) - * Copyright (C) 2005 MIPS Technologies, Inc. All rights reserved. - * Author: Maciej W. Rozycki <macro@mips.com> - * - * This program is free software; you can distribute it and/or modify it - * under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - */ -#include <linux/config.h> -#include <linux/init.h> -#include <linux/pci.h> - -#include <asm/mips-boards/atlasint.h> - -#define PCIA ATLASINT_PCIA -#define PCIB ATLASINT_PCIB -#define PCIC ATLASINT_PCIC -#define PCID ATLASINT_PCID -#define INTA ATLASINT_INTA -#define INTB ATLASINT_INTB -#define ETH ATLASINT_ETH -#define INTC ATLASINT_INTC -#define SCSI ATLASINT_SCSI -#define INTD ATLASINT_INTD - -static char irq_tab[][5] __initdata = { - /* INTA INTB INTC INTD */ - {0, 0, 0, 0, 0 }, /* 0: Unused */ - {0, 0, 0, 0, 0 }, /* 1: Unused */ - {0, 0, 0, 0, 0 }, /* 2: Unused */ - {0, 0, 0, 0, 0 }, /* 3: Unused */ - {0, 0, 0, 0, 0 }, /* 4: Unused */ - {0, 0, 0, 0, 0 }, /* 5: Unused */ - {0, 0, 0, 0, 0 }, /* 6: Unused */ - {0, 0, 0, 0, 0 }, /* 7: Unused */ - {0, 0, 0, 0, 0 }, /* 8: Unused */ - {0, 0, 0, 0, 0 }, /* 9: Unused */ - {0, 0, 0, 0, 0 }, /* 10: Unused */ - {0, 0, 0, 0, 0 }, /* 11: Unused */ - {0, 0, 0, 0, 0 }, /* 12: Unused */ - {0, 0, 0, 0, 0 }, /* 13: Unused */ - {0, 0, 0, 0, 0 }, /* 14: Unused */ - {0, PCIA, PCIB, PCIC, PCID }, /* 15: cPCI (behind 21150) */ - {0, SCSI, 0, 0, 0 }, /* 16: SYM53C810A SCSI */ - {0, 0, 0, 0, 0 }, /* 17: Core */ - {0, INTA, INTB, INTC, INTD }, /* 18: PCI Slot */ - {0, ETH, 0, 0, 0 }, /* 19: SAA9730 Eth. et al. */ - {0, 0, 0, 0, 0 }, /* 20: Unused */ - {0, 0, 0, 0, 0 } /* 21: Unused */ -}; - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - return irq_tab[slot][pin]; -} - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} - -#ifdef CONFIG_KGDB -/* - * The PCI scan may have moved the saa9730 I/O address, so reread - * the address here. - * This does mean that it's not possible to debug the PCI bus configuration - * code, but it is better than nothing... - */ - -static void atlas_saa9730_base_fixup (struct pci_dev *pdev) -{ - extern void *saa9730_base; - if (pdev->bus == 0 && PCI_SLOT(pdev->devfn) == 19) - (void) pci_read_config_dword (pdev, 0x14, (u32 *)&saa9730_base); - printk ("saa9730_base = %x\n", saa9730_base); -} - -DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA9730, - atlas_saa9730_base_fixup); - -#endif diff --git a/arch/mips/pci/fixup-au1000.c b/arch/mips/pci/fixup-au1000.c deleted file mode 100644 index c2f8304fe55..00000000000 --- a/arch/mips/pci/fixup-au1000.c +++ /dev/null @@ -1,47 +0,0 @@ -/* - * BRIEF MODULE DESCRIPTION - * Board specific pci fixups. - * - * Copyright 2001-2003 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ppopov@mvista.com or source@mvista.com - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <asm/mach-au1x00/au1000.h> - -extern char irq_tab_alchemy[][5]; - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - return irq_tab_alchemy[slot][pin]; -} - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} diff --git a/arch/mips/pci/fixup-bcm63xx.c b/arch/mips/pci/fixup-bcm63xx.c new file mode 100644 index 00000000000..340863009da --- /dev/null +++ b/arch/mips/pci/fixup-bcm63xx.c @@ -0,0 +1,21 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> + */ + +#include <linux/types.h> +#include <linux/pci.h> +#include <bcm63xx_cpu.h> + +int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + return bcm63xx_get_irq_number(IRQ_PCI); +} + +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} diff --git a/arch/mips/pci/fixup-capcella.c b/arch/mips/pci/fixup-capcella.c index 1e530751936..1c02f573736 100644 --- a/arch/mips/pci/fixup-capcella.c +++ b/arch/mips/pci/fixup-capcella.c @@ -1,7 +1,7 @@ /* * fixup-cappcela.c, The ZAO Networks Capcella specific PCI fixups. * - * Copyright (C) 2002,2004 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * Copyright (C) 2002,2004 Yoichi Yuasa <yuasa@linux-mips.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -38,7 +38,7 @@ static char irq_tab_capcella[][5] __initdata = { [14] = { -1, INTA, INTB, INTC, INTD } }; -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { return irq_tab_capcella[slot][pin]; } diff --git a/arch/mips/pci/fixup-cobalt.c b/arch/mips/pci/fixup-cobalt.c index 75a01e76489..a138e8ee5cf 100644 --- a/arch/mips/pci/fixup-cobalt.c +++ b/arch/mips/pci/fixup-cobalt.c @@ -17,9 +17,25 @@ #include <asm/io.h> #include <asm/gt64120.h> -#include <asm/mach-cobalt/cobalt.h> +#include <cobalt.h> +#include <irq.h> -extern int cobalt_board_id; +/* + * PCI slot numbers + */ +#define COBALT_PCICONF_CPU 0x06 +#define COBALT_PCICONF_ETH0 0x07 +#define COBALT_PCICONF_RAQSCSI 0x08 +#define COBALT_PCICONF_VIA 0x09 +#define COBALT_PCICONF_PCISLOT 0x0A +#define COBALT_PCICONF_ETH1 0x0C + +/* + * The Cobalt board ID information. The boards have an ID number wired + * into the VIA that is available in the high nibble of register 94. + */ +#define VIA_COBALT_BRD_ID_REG 0x94 +#define VIA_COBALT_BRD_REG_to_ID(reg) ((unsigned char)(reg) >> 4) static void qube_raq_galileo_early_fixup(struct pci_dev *dev) { @@ -60,8 +76,6 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1, static void qube_raq_galileo_fixup(struct pci_dev *dev) { - unsigned short galileo_id; - if (dev->devfn != PCI_DEVFN(0, 0)) return; @@ -80,72 +94,90 @@ static void qube_raq_galileo_fixup(struct pci_dev *dev) * --x--x--x--x--x--x--x--x--x--x--x--x--x--x--x--x--x--x--x--x-- * * On all machines prior to Q2, we had the STOP line disconnected - * from Galileo to VIA on PCI. The new Galileo does not function + * from Galileo to VIA on PCI. The new Galileo does not function * correctly unless we have it connected. * * Therefore we must set the disconnect/retry cycle values to * something sensible when using the new Galileo. */ - pci_read_config_word(dev, PCI_REVISION_ID, &galileo_id); - galileo_id &= 0xff; /* mask off class info */ - printk(KERN_INFO "Galileo: revision %u\n", galileo_id); + printk(KERN_INFO "Galileo: revision %u\n", dev->revision); #if 0 - if (galileo_id >= 0x10) { + if (dev->revision >= 0x10) { /* New Galileo, assumes PCI stop line to VIA is connected. */ - GALILEO_OUTL(0x4020, GT_PCI0_TOR_OFS); - } else if (galileo_id == 0x1 || galileo_id == 0x2) + GT_WRITE(GT_PCI0_TOR_OFS, 0x4020); + } else if (dev->revision == 0x1 || dev->revision == 0x2) #endif { signed int timeo; /* XXX WE MUST DO THIS ELSE GALILEO LOCKS UP! -DaveM */ - timeo = GALILEO_INL(GT_PCI0_TOR_OFS); + timeo = GT_READ(GT_PCI0_TOR_OFS); /* Old Galileo, assumes PCI STOP line to VIA is disconnected. */ - GALILEO_OUTL( + GT_WRITE(GT_PCI0_TOR_OFS, (0xff << 16) | /* retry count */ (0xff << 8) | /* timeout 1 */ - 0xff, /* timeout 0 */ - GT_PCI0_TOR_OFS); + 0xff); /* timeout 0 */ /* enable PCI retry exceeded interrupt */ - GALILEO_OUTL(GALILEO_INTR_RETRY_CTR | GALILEO_INL(GT_INTRMASK_OFS), GT_INTRMASK_OFS); + GT_WRITE(GT_INTRMASK_OFS, GT_INTR_RETRYCTR0_MSK | GT_READ(GT_INTRMASK_OFS)); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL, PCI_DEVICE_ID_MARVELL_GT64111, qube_raq_galileo_fixup); +int cobalt_board_id; + +static void qube_raq_via_board_id_fixup(struct pci_dev *dev) +{ + u8 id; + int retval; + + retval = pci_read_config_byte(dev, VIA_COBALT_BRD_ID_REG, &id); + if (retval) { + panic("Cannot read board ID"); + return; + } + + cobalt_board_id = VIA_COBALT_BRD_REG_to_ID(id); + + printk(KERN_INFO "Cobalt board ID: %d\n", cobalt_board_id); +} + +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, + qube_raq_via_board_id_fixup); + static char irq_tab_qube1[] __initdata = { - [COBALT_PCICONF_CPU] = 0, - [COBALT_PCICONF_ETH0] = COBALT_QUBE1_ETH0_IRQ, - [COBALT_PCICONF_RAQSCSI] = COBALT_SCSI_IRQ, - [COBALT_PCICONF_VIA] = 0, - [COBALT_PCICONF_PCISLOT] = COBALT_QUBE_SLOT_IRQ, - [COBALT_PCICONF_ETH1] = 0 + [COBALT_PCICONF_CPU] = 0, + [COBALT_PCICONF_ETH0] = QUBE1_ETH0_IRQ, + [COBALT_PCICONF_RAQSCSI] = SCSI_IRQ, + [COBALT_PCICONF_VIA] = 0, + [COBALT_PCICONF_PCISLOT] = PCISLOT_IRQ, + [COBALT_PCICONF_ETH1] = 0 }; static char irq_tab_cobalt[] __initdata = { - [COBALT_PCICONF_CPU] = 0, - [COBALT_PCICONF_ETH0] = COBALT_ETH0_IRQ, - [COBALT_PCICONF_RAQSCSI] = COBALT_SCSI_IRQ, - [COBALT_PCICONF_VIA] = 0, - [COBALT_PCICONF_PCISLOT] = COBALT_QUBE_SLOT_IRQ, - [COBALT_PCICONF_ETH1] = COBALT_ETH1_IRQ + [COBALT_PCICONF_CPU] = 0, + [COBALT_PCICONF_ETH0] = ETH0_IRQ, + [COBALT_PCICONF_RAQSCSI] = SCSI_IRQ, + [COBALT_PCICONF_VIA] = 0, + [COBALT_PCICONF_PCISLOT] = PCISLOT_IRQ, + [COBALT_PCICONF_ETH1] = ETH1_IRQ }; static char irq_tab_raq2[] __initdata = { - [COBALT_PCICONF_CPU] = 0, - [COBALT_PCICONF_ETH0] = COBALT_ETH0_IRQ, - [COBALT_PCICONF_RAQSCSI] = COBALT_RAQ_SCSI_IRQ, - [COBALT_PCICONF_VIA] = 0, - [COBALT_PCICONF_PCISLOT] = COBALT_QUBE_SLOT_IRQ, - [COBALT_PCICONF_ETH1] = COBALT_ETH1_IRQ + [COBALT_PCICONF_CPU] = 0, + [COBALT_PCICONF_ETH0] = ETH0_IRQ, + [COBALT_PCICONF_RAQSCSI] = RAQ2_SCSI_IRQ, + [COBALT_PCICONF_VIA] = 0, + [COBALT_PCICONF_PCISLOT] = PCISLOT_IRQ, + [COBALT_PCICONF_ETH1] = ETH1_IRQ }; -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { - if (cobalt_board_id < COBALT_BRD_ID_QUBE2) + if (cobalt_board_id <= COBALT_BRD_ID_QUBE1) return irq_tab_qube1[slot]; if (cobalt_board_id == COBALT_BRD_ID_RAQ2) diff --git a/arch/mips/pci/fixup-ddb5074.c b/arch/mips/pci/fixup-ddb5074.c deleted file mode 100644 index 5a4a7c239c4..00000000000 --- a/arch/mips/pci/fixup-ddb5074.c +++ /dev/null @@ -1,21 +0,0 @@ -/* - * It's nice to have the LEDs on the GPIO pins available for debugging - */ -static void ddb5074_fixup(struct pci_dev *dev) -{ - extern struct pci_dev *pci_pmu; - u8 t8; - - pci_pmu = dev; /* for LEDs D2 and D3 */ - /* Program the lines for LEDs D2 and D3 to output */ - pci_read_config_byte(dev, 0x7d, &t8); - t8 |= 0xc0; - pci_write_config_byte(dev, 0x7d, t8); - /* Turn LEDs D2 and D3 off */ - pci_read_config_byte(dev, 0x7e, &t8); - t8 |= 0xc0; - pci_write_config_byte(dev, 0x7e, t8); -} - -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, - ddb5074_fixup); diff --git a/arch/mips/pci/fixup-ddb5477.c b/arch/mips/pci/fixup-ddb5477.c deleted file mode 100644 index 2f1444e6065..00000000000 --- a/arch/mips/pci/fixup-ddb5477.c +++ /dev/null @@ -1,78 +0,0 @@ -/* - * - * BRIEF MODULE DESCRIPTION - * Board specific pci fixups. - * - * Copyright 2001, 2002, 2003 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -static void ddb5477_fixup(struct pci_dev *dev) -{ - u8 old; - - printk(KERN_NOTICE "Enabling ALI M1533/35 PS2 keyboard/mouse.\n"); - pci_read_config_byte(dev, 0x41, &old); - pci_write_config_byte(dev, 0x41, old | 0xd0); -} - -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, - ddb5477_fixup); -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1535, - ddb5477_fixup); - -/* - * Fixup baseboard AMD chip so that tx does not underflow. - * bcr_18 |= 0x0800 - * This sets NOUFLO bit which makes tx not start until whole pkt - * is fetched to the chip. - */ -#define PCNET32_WIO_RDP 0x10 -#define PCNET32_WIO_RAP 0x12 -#define PCNET32_WIO_RESET 0x14 -#define PCNET32_WIO_BDP 0x16 - -static void ddb5477_amd_lance_fixup(struct pci_dev *dev) -{ - unsigned long ioaddr; - u16 temp; - - ioaddr = pci_resource_start(dev, 0); - - inw(ioaddr + PCNET32_WIO_RESET); /* reset chip */ - - /* bcr_18 |= 0x0800 */ - outw(18, ioaddr + PCNET32_WIO_RAP); - temp = inw(ioaddr + PCNET32_WIO_BDP); - temp |= 0x0800; - outw(18, ioaddr + PCNET32_WIO_RAP); - outw(temp, ioaddr + PCNET32_WIO_BDP); -} - -DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_LANCE, - ddb5477_amd_lance_fixup); diff --git a/arch/mips/pci/fixup-emma2rh.c b/arch/mips/pci/fixup-emma2rh.c new file mode 100644 index 00000000000..19caf775c20 --- /dev/null +++ b/arch/mips/pci/fixup-emma2rh.c @@ -0,0 +1,97 @@ +/* + * Copyright (C) NEC Electronics Corporation 2004-2006 + * + * This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c + * + * Copyright 2001 MontaVista Software Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/pci.h> + +#include <asm/bootinfo.h> + +#include <asm/emma/emma2rh.h> + +#define EMMA2RH_PCI_HOST_SLOT 0x09 +#define EMMA2RH_USB_SLOT 0x03 +#define PCI_DEVICE_ID_NEC_EMMA2RH 0x014b /* EMMA2RH PCI Host */ + +/* + * we fix up irqs based on the slot number. + * The first entry is at AD:11. + * Fortunately this works because, although we have two pci buses, + * they all have different slot numbers (except for rockhopper slot 20 + * which is handled below). + * + */ + +#define MAX_SLOT_NUM 10 +static unsigned char irq_map[][5] __initdata = { + [3] = {0, MARKEINS_PCI_IRQ_INTB, MARKEINS_PCI_IRQ_INTC, + MARKEINS_PCI_IRQ_INTD, 0,}, + [4] = {0, MARKEINS_PCI_IRQ_INTA, 0, 0, 0,}, + [5] = {0, 0, 0, 0, 0,}, + [6] = {0, MARKEINS_PCI_IRQ_INTC, MARKEINS_PCI_IRQ_INTD, + MARKEINS_PCI_IRQ_INTA, MARKEINS_PCI_IRQ_INTB,}, +}; + +static void nec_usb_controller_fixup(struct pci_dev *dev) +{ + if (PCI_SLOT(dev->devfn) == EMMA2RH_USB_SLOT) + /* on board USB controller configuration */ + pci_write_config_dword(dev, 0xe4, 1 << 5); +} + +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB, + nec_usb_controller_fixup); + +/* + * Prevent the PCI layer from seeing the resources allocated to this device + * if it is the host bridge by marking it as such. These resources are of + * no consequence to the PCI layer (they are handled elsewhere). + */ +static void emma2rh_pci_host_fixup(struct pci_dev *dev) +{ + int i; + + if (PCI_SLOT(dev->devfn) == EMMA2RH_PCI_HOST_SLOT) { + dev->class &= 0xff; + dev->class |= PCI_CLASS_BRIDGE_HOST << 8; + for (i = 0; i < PCI_NUM_RESOURCES; i++) { + dev->resource[i].start = 0; + dev->resource[i].end = 0; + dev->resource[i].flags = 0; + } + } +} + +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_EMMA2RH, + emma2rh_pci_host_fixup); + +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + return irq_map[slot][pin]; +} + +/* Do platform specific device initialization at pci_enable_device() time */ +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} diff --git a/arch/mips/pci/fixup-ev64120.c b/arch/mips/pci/fixup-ev64120.c deleted file mode 100644 index 8dbb90d63f0..00000000000 --- a/arch/mips/pci/fixup-ev64120.c +++ /dev/null @@ -1,34 +0,0 @@ -#include <linux/pci.h> -#include <linux/init.h> - -int pci_range_ck(unsigned char bus, unsigned char dev) -{ - if (((bus == 0) || (bus == 1)) && (dev >= 6) && (dev <= 8)) - return 0; - - return -1; -} - -/* - * After detecting all agents over the PCI , this function is called - * in order to give an interrupt number for each PCI device starting - * from IRQ 20. It does also enables master for each device. - */ -void __devinit pcibios_fixup_bus(struct pci_bus *bus) -{ - unsigned int irq = 20; - struct pci_bus *current_bus = bus; - struct pci_dev *dev; - struct list_head *devices_link; - - list_for_each(devices_link, &(current_bus->devices)) { - dev = pci_dev_b(devices_link); - if (dev != NULL) { - dev->irq = irq++; - - /* Assign an interrupt number for the device */ - pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq); - pcibios_set_master(dev); - } - } -} diff --git a/arch/mips/pci/fixup-fuloong2e.c b/arch/mips/pci/fixup-fuloong2e.c new file mode 100644 index 00000000000..50da773faed --- /dev/null +++ b/arch/mips/pci/fixup-fuloong2e.c @@ -0,0 +1,225 @@ +/* + * Copyright (C) 2004 ICT CAS + * Author: Li xiaoyu, ICT CAS + * lixy@ict.ac.cn + * + * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/init.h> +#include <linux/pci.h> + +#include <loongson.h> + +/* South bridge slot number is set by the pci probe process */ +static u8 sb_slot = 5; + +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + int irq = 0; + + if (slot == sb_slot) { + switch (PCI_FUNC(dev->devfn)) { + case 2: + irq = 10; + break; + case 3: + irq = 11; + break; + case 5: + irq = 9; + break; + } + } else { + irq = LOONGSON_IRQ_BASE + 25 + pin; + } + return irq; + +} + +/* Do platform specific device initialization at pci_enable_device() time */ +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} + +static void loongson2e_nec_fixup(struct pci_dev *pdev) +{ + unsigned int val; + + /* Configures port 1, 2, 3, 4 to be validate*/ + pci_read_config_dword(pdev, 0xe0, &val); + pci_write_config_dword(pdev, 0xe0, (val & ~7) | 0x4); + + /* System clock is 48-MHz Oscillator. */ + pci_write_config_dword(pdev, 0xe4, 1 << 5); +} + +static void loongson2e_686b_func0_fixup(struct pci_dev *pdev) +{ + unsigned char c; + + sb_slot = PCI_SLOT(pdev->devfn); + + printk(KERN_INFO "via686b fix: ISA bridge\n"); + + /* Enable I/O Recovery time */ + pci_write_config_byte(pdev, 0x40, 0x08); + + /* Enable ISA refresh */ + pci_write_config_byte(pdev, 0x41, 0x01); + + /* disable ISA line buffer */ + pci_write_config_byte(pdev, 0x45, 0x00); + + /* Gate INTR, and flush line buffer */ + pci_write_config_byte(pdev, 0x46, 0xe0); + + /* Disable PCI Delay Transaction, Enable EISA ports 4D0/4D1. */ + /* pci_write_config_byte(pdev, 0x47, 0x20); */ + + /* + * enable PCI Delay Transaction, Enable EISA ports 4D0/4D1. + * enable time-out timer + */ + pci_write_config_byte(pdev, 0x47, 0xe6); + + /* + * enable level trigger on pci irqs: 9,10,11,13 + * important! without this PCI interrupts won't work + */ + outb(0x2e, 0x4d1); + + /* 512 K PCI Decode */ + pci_write_config_byte(pdev, 0x48, 0x01); + + /* Wait for PGNT before grant to ISA Master/DMA */ + pci_write_config_byte(pdev, 0x4a, 0x84); + + /* + * Plug'n'Play + * + * Parallel DRQ 3, Floppy DRQ 2 (default) + */ + pci_write_config_byte(pdev, 0x50, 0x0e); + + /* + * IRQ Routing for Floppy and Parallel port + * + * IRQ 6 for floppy, IRQ 7 for parallel port + */ + pci_write_config_byte(pdev, 0x51, 0x76); + + /* IRQ Routing for serial ports (take IRQ 3 and 4) */ + pci_write_config_byte(pdev, 0x52, 0x34); + + /* All IRQ's level triggered. */ + pci_write_config_byte(pdev, 0x54, 0x00); + + /* route PIRQA-D irq */ + pci_write_config_byte(pdev, 0x55, 0x90); /* bit 7-4, PIRQA */ + pci_write_config_byte(pdev, 0x56, 0xba); /* bit 7-4, PIRQC; */ + /* 3-0, PIRQB */ + pci_write_config_byte(pdev, 0x57, 0xd0); /* bit 7-4, PIRQD */ + + /* enable function 5/6, audio/modem */ + pci_read_config_byte(pdev, 0x85, &c); + c &= ~(0x3 << 2); + pci_write_config_byte(pdev, 0x85, c); + + printk(KERN_INFO"via686b fix: ISA bridge done\n"); +} + +static void loongson2e_686b_func1_fixup(struct pci_dev *pdev) +{ + printk(KERN_INFO"via686b fix: IDE\n"); + + /* Modify IDE controller setup */ + pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 48); + pci_write_config_byte(pdev, PCI_COMMAND, + PCI_COMMAND_IO | PCI_COMMAND_MEMORY | + PCI_COMMAND_MASTER); + pci_write_config_byte(pdev, 0x40, 0x0b); + /* legacy mode */ + pci_write_config_byte(pdev, 0x42, 0x09); + +#if 1/* play safe, otherwise we may see notebook's usb keyboard lockup */ + /* disable read prefetch/write post buffers */ + pci_write_config_byte(pdev, 0x41, 0x02); + + /* use 3/4 as fifo thresh hold */ + pci_write_config_byte(pdev, 0x43, 0x0a); + pci_write_config_byte(pdev, 0x44, 0x00); + + pci_write_config_byte(pdev, 0x45, 0x00); +#else + pci_write_config_byte(pdev, 0x41, 0xc2); + pci_write_config_byte(pdev, 0x43, 0x35); + pci_write_config_byte(pdev, 0x44, 0x1c); + + pci_write_config_byte(pdev, 0x45, 0x10); +#endif + + printk(KERN_INFO"via686b fix: IDE done\n"); +} + +static void loongson2e_686b_func2_fixup(struct pci_dev *pdev) +{ + /* irq routing */ + pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, 10); +} + +static void loongson2e_686b_func3_fixup(struct pci_dev *pdev) +{ + /* irq routing */ + pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, 11); +} + +static void loongson2e_686b_func5_fixup(struct pci_dev *pdev) +{ + unsigned int val; + unsigned char c; + + /* enable IO */ + pci_write_config_byte(pdev, PCI_COMMAND, + PCI_COMMAND_IO | PCI_COMMAND_MEMORY | + PCI_COMMAND_MASTER); + pci_read_config_dword(pdev, 0x4, &val); + pci_write_config_dword(pdev, 0x4, val | 1); + + /* route ac97 IRQ */ + pci_write_config_byte(pdev, 0x3c, 9); + + pci_read_config_byte(pdev, 0x8, &c); + + /* link control: enable link & SGD PCM output */ + pci_write_config_byte(pdev, 0x41, 0xcc); + + /* disable game port, FM, midi, sb, enable write to reg2c-2f */ + pci_write_config_byte(pdev, 0x42, 0x20); + + /* we are using Avance logic codec */ + pci_write_config_word(pdev, 0x2c, 0x1005); + pci_write_config_word(pdev, 0x2e, 0x4710); + pci_read_config_dword(pdev, 0x2c, &val); + + pci_write_config_byte(pdev, 0x42, 0x0); +} + +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, + loongson2e_686b_func0_fixup); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1, + loongson2e_686b_func1_fixup); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_2, + loongson2e_686b_func2_fixup); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, + loongson2e_686b_func3_fixup); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, + loongson2e_686b_func5_fixup); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB, + loongson2e_nec_fixup); diff --git a/arch/mips/pci/fixup-ip32.c b/arch/mips/pci/fixup-ip32.c index 3e66b0aa63c..133685e215e 100644 --- a/arch/mips/pci/fixup-ip32.c +++ b/arch/mips/pci/fixup-ip32.c @@ -22,13 +22,13 @@ #define INTC MACEPCI_SHARED1_IRQ #define INTD MACEPCI_SHARED2_IRQ static char irq_tab_mace[][5] __initdata = { - /* Dummy INT#A INT#B INT#C INT#D */ - {0, 0, 0, 0, 0}, /* This is placeholder row - never used */ - {0, SCSI0, SCSI0, SCSI0, SCSI0}, - {0, SCSI1, SCSI1, SCSI1, SCSI1}, - {0, INTA0, INTB, INTC, INTD}, - {0, INTA1, INTC, INTD, INTB}, - {0, INTA2, INTD, INTB, INTC}, + /* Dummy INT#A INT#B INT#C INT#D */ + {0, 0, 0, 0, 0}, /* This is placeholder row - never used */ + {0, SCSI0, SCSI0, SCSI0, SCSI0}, + {0, SCSI1, SCSI1, SCSI1, SCSI1}, + {0, INTA0, INTB, INTC, INTD}, + {0, INTA1, INTC, INTD, INTB}, + {0, INTA2, INTD, INTB, INTC}, }; @@ -39,7 +39,7 @@ static char irq_tab_mace[][5] __initdata = { * irqs. I suppose a device without a pin A will thank us for doing it * right if there exists such a broken piece of crap. */ -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { return irq_tab_mace[slot][pin]; } diff --git a/arch/mips/pci/fixup-ite8172g.c b/arch/mips/pci/fixup-ite8172g.c deleted file mode 100644 index 2290ea4228d..00000000000 --- a/arch/mips/pci/fixup-ite8172g.c +++ /dev/null @@ -1,80 +0,0 @@ -/* - * BRIEF MODULE DESCRIPTION - * Board specific pci fixups. - * - * Copyright 2000 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ppopov@mvista.com or source@mvista.com - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <asm/it8172/it8172.h> -#include <asm/it8172/it8172_pci.h> -#include <asm/it8172/it8172_int.h> - -/* - * Shortcuts - */ -#define INTA IT8172_PCI_INTA_IRQ -#define INTB IT8172_PCI_INTB_IRQ -#define INTC IT8172_PCI_INTC_IRQ -#define INTD IT8172_PCI_INTD_IRQ - -static const int internal_func_irqs[7] __initdata = { - IT8172_AC97_IRQ, - IT8172_DMA_IRQ, - IT8172_CDMA_IRQ, - IT8172_USB_IRQ, - IT8172_BRIDGE_MASTER_IRQ, - IT8172_IDE_IRQ, - IT8172_MC68K_IRQ -}; - -static char irq_tab_ite8172g[][5] __initdata = { - [0x10] = { 0, INTA, INTB, INTC, INTD }, - [0x11] = { 0, INTA, INTB, INTC, INTD }, - [0x12] = { 0, INTB, INTC, INTD, INTA }, - [0x13] = { 0, INTC, INTD, INTA, INTB }, - [0x14] = { 0, INTD, INTA, INTB, INTC }, -}; - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - /* - * Internal device 1 is actually 7 different internal devices on the - * IT8172G (a multifunction device). - */ - if (slot == 1) - return internal_func_irqs[PCI_FUNC(dev->devfn)]; - - return irq_tab_ite8172g[slot][pin]; -} - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} diff --git a/arch/mips/pci/fixup-ivr.c b/arch/mips/pci/fixup-ivr.c deleted file mode 100644 index 0c7c16464c1..00000000000 --- a/arch/mips/pci/fixup-ivr.c +++ /dev/null @@ -1,75 +0,0 @@ -/* - * - * BRIEF MODULE DESCRIPTION - * Globespan IVR board-specific pci fixups. - * - * Copyright 2000 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ppopov@mvista.com or source@mvista.com - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <asm/it8172/it8172.h> -#include <asm/it8172/it8172_pci.h> -#include <asm/it8172/it8172_int.h> - -/* - * Shortcuts - */ -#define INTA IT8172_PCI_INTA_IRQ -#define INTB IT8172_PCI_INTB_IRQ -#define INTC IT8172_PCI_INTC_IRQ -#define INTD IT8172_PCI_INTD_IRQ - -static const int internal_func_irqs[7] __initdata = { - IT8172_AC97_IRQ, - IT8172_DMA_IRQ, - IT8172_CDMA_IRQ, - IT8172_USB_IRQ, - IT8172_BRIDGE_MASTER_IRQ, - IT8172_IDE_IRQ, - IT8172_MC68K_IRQ -}; - -static char irq_tab_ivr[][5] __initdata = { - [0x11] = { INTC, INTC, INTD, INTA, INTB }, /* Realtek RTL-8139 */ - [0x12] = { INTB, INTB, INTB, INTC, INTC }, /* IVR slot */ - [0x13] = { INTA, INTA, INTB, INTC, INTD } /* Expansion slot */ -}; - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - if (slot == 1) - return internal_func_irqs[PCI_FUNC(dev->devfn)]; - - return irq_tab_ivr[slot][pin]; -} - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} diff --git a/arch/mips/pci/fixup-jaguar.c b/arch/mips/pci/fixup-jaguar.c deleted file mode 100644 index 6c5e1d47179..00000000000 --- a/arch/mips/pci/fixup-jaguar.c +++ /dev/null @@ -1,43 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Marvell MV64340 interrupt fixup code. - * - * Marvell wants an NDA for their docs so this was written without - * documentation. You've been warned. - * - * Copyright (C) 2004 Ralf Baechle (ralf@linux-mips.org) - */ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/pci.h> - -#include <asm/mipsregs.h> - -/* - * WARNING: Example of how _NOT_ to do it. - */ -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - int bus = dev->bus->number; - - if (bus == 0 && slot == 1) - return 3; /* PCI-X A */ - if (bus == 0 && slot == 2) - return 4; /* PCI-X B */ - if (bus == 1 && slot == 1) - return 5; /* PCI A */ - if (bus == 1 && slot == 2) - return 6; /* PCI B */ - -return 0; - panic("Whooops in pcibios_map_irq"); -} - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} diff --git a/arch/mips/pci/fixup-jmr3927.c b/arch/mips/pci/fixup-jmr3927.c index f8696081c5b..0f1069527cb 100644 --- a/arch/mips/pci/fixup-jmr3927.c +++ b/arch/mips/pci/fixup-jmr3927.c @@ -28,33 +28,31 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> +#include <asm/txx9/pci.h> +#include <asm/txx9/jmr3927.h> -#include <asm/jmr3927/jmr3927.h> - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int __init jmr3927_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { unsigned char irq = pin; /* IRQ rotation (PICMG) */ irq--; /* 0-3 */ - if (dev->bus->parent == NULL && - slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(23)) { + if (slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(23)) { /* PCI CardSlot (IDSEL=A23, DevNu=12) */ /* PCIA => PCIC (IDSEL=A23) */ /* NOTE: JMR3927 JP1 must be set to OPEN */ irq = (irq + 2) % 4; - } else if (dev->bus->parent == NULL && - slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(22)) { + } else if (slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(22)) { /* PCI CardSlot (IDSEL=A22, DevNu=11) */ /* PCIA => PCIA (IDSEL=A22) */ /* NOTE: JMR3927 JP1 must be set to OPEN */ irq = (irq + 0) % 4; } else { /* PCI Backplane */ - irq = (irq + 3 + slot) % 4; + if (txx9_pci_option & TXX9_PCI_OPT_PICMG) + irq = (irq + 33 - slot) % 4; + else + irq = (irq + 3 + slot) % 4; } irq++; /* 1-4 */ @@ -63,43 +61,19 @@ int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) irq = JMR3927_IRQ_IOC_PCIA; break; case 2: - // wrong for backplane irq = JMR3927_IRQ_IOC_PCIB; - irq = JMR3927_IRQ_IOC_PCID; + irq = JMR3927_IRQ_IOC_PCIB; break; case 3: irq = JMR3927_IRQ_IOC_PCIC; break; case 4: - // wrong for backplane irq = JMR3927_IRQ_IOC_PCID; - irq = JMR3927_IRQ_IOC_PCIB; + irq = JMR3927_IRQ_IOC_PCID; break; } /* Check OnBoard Ethernet (IDSEL=A24, DevNu=13) */ if (dev->bus->parent == NULL && - slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(24)) { - extern int jmr3927_ether1_irq; - /* check this irq line was reserved for ether1 */ - if (jmr3927_ether1_irq != JMR3927_IRQ_ETHER0) - irq = JMR3927_IRQ_ETHER0; - else - irq = 0; /* disable */ - } + slot == TX3927_PCIC_IDSEL_AD_TO_SLOT(24)) + irq = JMR3927_IRQ_ETHER0; return irq; } - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - /* SMSC SLC90E66 IDE uses irq 14, 15 (default) */ - if (!(dev->vendor == PCI_VENDOR_ID_EFAR && - dev->device == PCI_DEVICE_ID_EFAR_SLC90E66_1)) - return pci_get_irq(dev, pin); - - dev->irq = irq; -} diff --git a/arch/mips/pci/fixup-lantiq.c b/arch/mips/pci/fixup-lantiq.c new file mode 100644 index 00000000000..c2ce41ea61d --- /dev/null +++ b/arch/mips/pci/fixup-lantiq.c @@ -0,0 +1,29 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * Copyright (C) 2012 John Crispin <blogic@openwrt.org> + */ + +#include <linux/of_irq.h> +#include <linux/of_pci.h> + +int (*ltq_pci_plat_arch_init)(struct pci_dev *dev) = NULL; +int (*ltq_pci_plat_dev_init)(struct pci_dev *dev) = NULL; + +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + if (ltq_pci_plat_arch_init) + return ltq_pci_plat_arch_init(dev); + + if (ltq_pci_plat_dev_init) + return ltq_pci_plat_dev_init(dev); + + return 0; +} + +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + return of_irq_parse_and_map_pci(dev, slot, pin); +} diff --git a/arch/mips/pci/fixup-lemote2f.c b/arch/mips/pci/fixup-lemote2f.c new file mode 100644 index 00000000000..95ab9a1bd01 --- /dev/null +++ b/arch/mips/pci/fixup-lemote2f.c @@ -0,0 +1,160 @@ +/* + * Copyright (C) 2008 Lemote Technology + * Copyright (C) 2004 ICT CAS + * Author: Li xiaoyu, lixy@ict.ac.cn + * + * Copyright (C) 2007 Lemote, Inc. + * Author: Fuxin Zhang, zhangfx@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/init.h> +#include <linux/pci.h> + +#include <loongson.h> +#include <cs5536/cs5536.h> +#include <cs5536/cs5536_pci.h> + +/* PCI interrupt pins + * + * These should not be changed, or you should consider loongson2f interrupt + * register and your pci card dispatch + */ + +#define PCIA 4 +#define PCIB 5 +#define PCIC 6 +#define PCID 7 + +/* all the pci device has the PCIA pin, check the datasheet. */ +static char irq_tab[][5] __initdata = { + /* INTA INTB INTC INTD */ + {0, 0, 0, 0, 0}, /* 11: Unused */ + {0, 0, 0, 0, 0}, /* 12: Unused */ + {0, 0, 0, 0, 0}, /* 13: Unused */ + {0, 0, 0, 0, 0}, /* 14: Unused */ + {0, 0, 0, 0, 0}, /* 15: Unused */ + {0, 0, 0, 0, 0}, /* 16: Unused */ + {0, PCIA, 0, 0, 0}, /* 17: RTL8110-0 */ + {0, PCIB, 0, 0, 0}, /* 18: RTL8110-1 */ + {0, PCIC, 0, 0, 0}, /* 19: SiI3114 */ + {0, PCID, 0, 0, 0}, /* 20: 3-ports nec usb */ + {0, PCIA, PCIB, PCIC, PCID}, /* 21: PCI-SLOT */ + {0, 0, 0, 0, 0}, /* 22: Unused */ + {0, 0, 0, 0, 0}, /* 23: Unused */ + {0, 0, 0, 0, 0}, /* 24: Unused */ + {0, 0, 0, 0, 0}, /* 25: Unused */ + {0, 0, 0, 0, 0}, /* 26: Unused */ + {0, 0, 0, 0, 0}, /* 27: Unused */ +}; + +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + int virq; + + if ((PCI_SLOT(dev->devfn) != PCI_IDSEL_CS5536) + && (PCI_SLOT(dev->devfn) < 32)) { + virq = irq_tab[slot][pin]; + printk(KERN_INFO "slot: %d, pin: %d, irq: %d\n", slot, pin, + virq + LOONGSON_IRQ_BASE); + if (virq != 0) + return LOONGSON_IRQ_BASE + virq; + else + return 0; + } else if (PCI_SLOT(dev->devfn) == PCI_IDSEL_CS5536) { /* cs5536 */ + switch (PCI_FUNC(dev->devfn)) { + case 2: + pci_write_config_byte(dev, PCI_INTERRUPT_LINE, + CS5536_IDE_INTR); + return CS5536_IDE_INTR; /* for IDE */ + case 3: + pci_write_config_byte(dev, PCI_INTERRUPT_LINE, + CS5536_ACC_INTR); + return CS5536_ACC_INTR; /* for AUDIO */ + case 4: /* for OHCI */ + case 5: /* for EHCI */ + case 6: /* for UDC */ + case 7: /* for OTG */ + pci_write_config_byte(dev, PCI_INTERRUPT_LINE, + CS5536_USB_INTR); + return CS5536_USB_INTR; + } + return dev->irq; + } else { + printk(KERN_INFO " strange pci slot number.\n"); + return 0; + } +} + +/* Do platform specific device initialization at pci_enable_device() time */ +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} + +/* CS5536 SPEC. fixup */ +static void loongson_cs5536_isa_fixup(struct pci_dev *pdev) +{ + /* the uart1 and uart2 interrupt in PIC is enabled as default */ + pci_write_config_dword(pdev, PCI_UART1_INT_REG, 1); + pci_write_config_dword(pdev, PCI_UART2_INT_REG, 1); +} + +static void loongson_cs5536_ide_fixup(struct pci_dev *pdev) +{ + /* setting the mutex pin as IDE function */ + pci_write_config_dword(pdev, PCI_IDE_CFG_REG, + CS5536_IDE_FLASH_SIGNATURE); +} + +static void loongson_cs5536_acc_fixup(struct pci_dev *pdev) +{ + /* enable the AUDIO interrupt in PIC */ + pci_write_config_dword(pdev, PCI_ACC_INT_REG, 1); + + pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xc0); +} + +static void loongson_cs5536_ohci_fixup(struct pci_dev *pdev) +{ + /* enable the OHCI interrupt in PIC */ + /* THE OHCI, EHCI, UDC, OTG are shared with interrupt in PIC */ + pci_write_config_dword(pdev, PCI_OHCI_INT_REG, 1); +} + +static void loongson_cs5536_ehci_fixup(struct pci_dev *pdev) +{ + u32 hi, lo; + + /* Serial short detect enable */ + _rdmsr(USB_MSR_REG(USB_CONFIG), &hi, &lo); + _wrmsr(USB_MSR_REG(USB_CONFIG), (1 << 1) | (1 << 3), lo); + + /* setting the USB2.0 micro frame length */ + pci_write_config_dword(pdev, PCI_EHCI_FLADJ_REG, 0x2000); +} + +static void loongson_nec_fixup(struct pci_dev *pdev) +{ + unsigned int val; + + pci_read_config_dword(pdev, 0xe0, &val); + /* Only 2 port be used */ + pci_write_config_dword(pdev, 0xe0, (val & ~3) | 0x2); +} + +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, + loongson_cs5536_isa_fixup); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_OHC, + loongson_cs5536_ohci_fixup); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_EHC, + loongson_cs5536_ehci_fixup); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_AUDIO, + loongson_cs5536_acc_fixup); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_IDE, + loongson_cs5536_ide_fixup); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB, + loongson_nec_fixup); diff --git a/arch/mips/pci/fixup-loongson3.c b/arch/mips/pci/fixup-loongson3.c new file mode 100644 index 00000000000..d708ae46d32 --- /dev/null +++ b/arch/mips/pci/fixup-loongson3.c @@ -0,0 +1,66 @@ +/* + * fixup-loongson3.c + * + * Copyright (C) 2012 Lemote, Inc. + * Author: Xiang Yu, xiangy@lemote.com + * Chen Huacai, chenhc@lemote.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#include <linux/pci.h> +#include <boot_param.h> + +static void print_fixup_info(const struct pci_dev *pdev) +{ + dev_info(&pdev->dev, "Device %x:%x, irq %d\n", + pdev->vendor, pdev->device, pdev->irq); +} + +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + print_fixup_info(dev); + return dev->irq; +} + +static void pci_fixup_radeon(struct pci_dev *pdev) +{ + if (pdev->resource[PCI_ROM_RESOURCE].start) + return; + + if (!loongson_sysconf.vgabios_addr) + return; + + pdev->resource[PCI_ROM_RESOURCE].start = + loongson_sysconf.vgabios_addr; + pdev->resource[PCI_ROM_RESOURCE].end = + loongson_sysconf.vgabios_addr + 256*1024 - 1; + pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_COPY; + + dev_info(&pdev->dev, "BAR %d: assigned %pR for Radeon ROM\n", + PCI_ROM_RESOURCE, &pdev->resource[PCI_ROM_RESOURCE]); +} + +DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID, + PCI_CLASS_DISPLAY_VGA, 8, pci_fixup_radeon); + +/* Do platform specific device initialization at pci_enable_device() time */ +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} diff --git a/arch/mips/pci/fixup-malta.c b/arch/mips/pci/fixup-malta.c index bf2c41d1e9c..40e920c653c 100644 --- a/arch/mips/pci/fixup-malta.c +++ b/arch/mips/pci/fixup-malta.c @@ -1,5 +1,6 @@ #include <linux/init.h> #include <linux/pci.h> +#include <asm/mips-boards/piix4.h> /* PCI interrupt pins */ #define PCIA 1 @@ -8,10 +9,11 @@ #define PCID 4 /* This table is filled in by interrogating the PIIX4 chip */ -static char pci_irq[5] __initdata; +static char pci_irq[5] = { +}; static char irq_tab[][5] __initdata = { - /* INTA INTB INTC INTD */ + /* INTA INTB INTC INTD */ {0, 0, 0, 0, 0 }, /* 0: GT64120 PCI bridge */ {0, 0, 0, 0, 0 }, /* 1: Unused */ {0, 0, 0, 0, 0 }, /* 2: Unused */ @@ -22,7 +24,7 @@ static char irq_tab[][5] __initdata = { {0, 0, 0, 0, 0 }, /* 7: Unused */ {0, 0, 0, 0, 0 }, /* 8: Unused */ {0, 0, 0, 0, 0 }, /* 9: Unused */ - {0, 0, 0, 0, PCID }, /* 10: PIIX4 USB */ + {0, 0, 0, 0, PCID }, /* 10: PIIX4 USB */ {0, PCIB, 0, 0, 0 }, /* 11: AMD 79C973 Ethernet */ {0, PCIC, 0, 0, 0 }, /* 12: Crystal 4281 Sound */ {0, 0, 0, 0, 0 }, /* 13: Unused */ @@ -30,13 +32,13 @@ static char irq_tab[][5] __initdata = { {0, 0, 0, 0, 0 }, /* 15: Unused */ {0, 0, 0, 0, 0 }, /* 16: Unused */ {0, 0, 0, 0, 0 }, /* 17: Bonito/SOC-it PCI Bridge*/ - {0, PCIA, PCIB, PCIC, PCID }, /* 18: PCI Slot 1 */ - {0, PCIB, PCIC, PCID, PCIA }, /* 19: PCI Slot 2 */ - {0, PCIC, PCID, PCIA, PCIB }, /* 20: PCI Slot 3 */ + {0, PCIA, PCIB, PCIC, PCID }, /* 18: PCI Slot 1 */ + {0, PCIB, PCIC, PCID, PCIA }, /* 19: PCI Slot 2 */ + {0, PCIC, PCID, PCIA, PCIB }, /* 20: PCI Slot 3 */ {0, PCID, PCIA, PCIB, PCIC } /* 21: PCI Slot 4 */ }; -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { int virq; virq = irq_tab[slot][pin]; @@ -49,12 +51,28 @@ int pcibios_plat_dev_init(struct pci_dev *dev) return 0; } -static void __init malta_piix_func0_fixup(struct pci_dev *pdev) +static void malta_piix_func3_base_fixup(struct pci_dev *dev) +{ + /* Set a sane PM I/O base address */ + pci_write_config_word(dev, PIIX4_FUNC3_PMBA, 0x1000); + + /* Enable access to the PM I/O region */ + pci_write_config_byte(dev, PIIX4_FUNC3_PMREGMISC, + PIIX4_FUNC3_PMREGMISC_EN); +} + +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, + malta_piix_func3_base_fixup); + +static void malta_piix_func0_fixup(struct pci_dev *pdev) { unsigned char reg_val; - static int piixirqmap[16] __initdata = { /* PIIX PIRQC[A:D] irq mappings */ - 0, 0, 0, 3, - 4, 5, 6, 7, + u32 reg_val32; + u16 reg_val16; + /* PIIX PIRQC[A:D] irq mappings */ + static int piixirqmap[PIIX4_FUNC0_PIRQRC_IRQ_ROUTING_MAX] = { + 0, 0, 0, 3, + 4, 5, 6, 7, 0, 9, 10, 11, 12, 0, 14, 15 }; @@ -62,11 +80,12 @@ static void __init malta_piix_func0_fixup(struct pci_dev *pdev) /* Interrogate PIIX4 to get PCI IRQ mapping */ for (i = 0; i <= 3; i++) { - pci_read_config_byte(pdev, 0x60+i, ®_val); - if (reg_val & 0x80) + pci_read_config_byte(pdev, PIIX4_FUNC0_PIRQRC+i, ®_val); + if (reg_val & PIIX4_FUNC0_PIRQRC_IRQ_ROUTING_DISABLE) pci_irq[PCIA+i] = 0; /* Disabled */ else - pci_irq[PCIA+i] = piixirqmap[reg_val & 15]; + pci_irq[PCIA+i] = piixirqmap[reg_val & + PIIX4_FUNC0_PIRQRC_IRQ_ROUTING_MASK]; } /* Done by YAMON 2.00 onwards */ @@ -75,15 +94,31 @@ static void __init malta_piix_func0_fixup(struct pci_dev *pdev) * Set top of main memory accessible by ISA or DMA * devices to 16 Mb. */ - pci_read_config_byte(pdev, 0x69, ®_val); - pci_write_config_byte(pdev, 0x69, reg_val | 0xf0); + pci_read_config_byte(pdev, PIIX4_FUNC0_TOM, ®_val); + pci_write_config_byte(pdev, PIIX4_FUNC0_TOM, reg_val | + PIIX4_FUNC0_TOM_TOP_OF_MEMORY_MASK); } + + /* Mux SERIRQ to its pin */ + pci_read_config_dword(pdev, PIIX4_FUNC0_GENCFG, ®_val32); + pci_write_config_dword(pdev, PIIX4_FUNC0_GENCFG, + reg_val32 | PIIX4_FUNC0_GENCFG_SERIRQ); + + /* Enable SERIRQ */ + pci_read_config_byte(pdev, PIIX4_FUNC0_SERIRQC, ®_val); + reg_val |= PIIX4_FUNC0_SERIRQC_EN | PIIX4_FUNC0_SERIRQC_CONT; + pci_write_config_byte(pdev, PIIX4_FUNC0_SERIRQC, reg_val); + + /* Enable response to special cycles */ + pci_read_config_word(pdev, PCI_COMMAND, ®_val16); + pci_write_config_word(pdev, PCI_COMMAND, + reg_val16 | PCI_COMMAND_SPECIAL); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_0, malta_piix_func0_fixup); -static void __init malta_piix_func1_fixup(struct pci_dev *pdev) +static void malta_piix_func1_fixup(struct pci_dev *pdev) { unsigned char reg_val; @@ -92,12 +127,32 @@ static void __init malta_piix_func1_fixup(struct pci_dev *pdev) /* * IDE Decode enable. */ - pci_read_config_byte(pdev, 0x41, ®_val); - pci_write_config_byte(pdev, 0x41, reg_val|0x80); - pci_read_config_byte(pdev, 0x43, ®_val); - pci_write_config_byte(pdev, 0x43, reg_val|0x80); + pci_read_config_byte(pdev, PIIX4_FUNC1_IDETIM_PRIMARY_HI, + ®_val); + pci_write_config_byte(pdev, PIIX4_FUNC1_IDETIM_PRIMARY_HI, + reg_val|PIIX4_FUNC1_IDETIM_PRIMARY_HI_IDE_DECODE_EN); + pci_read_config_byte(pdev, PIIX4_FUNC1_IDETIM_SECONDARY_HI, + ®_val); + pci_write_config_byte(pdev, PIIX4_FUNC1_IDETIM_SECONDARY_HI, + reg_val|PIIX4_FUNC1_IDETIM_SECONDARY_HI_IDE_DECODE_EN); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB, malta_piix_func1_fixup); + +/* Enable PCI 2.1 compatibility in PIIX4 */ +static void quirk_dlcsetup(struct pci_dev *dev) +{ + u8 odlc, ndlc; + + (void) pci_read_config_byte(dev, PIIX4_FUNC0_DLC, &odlc); + /* Enable passive releases and delayed transaction */ + ndlc = odlc | PIIX4_FUNC0_DLC_USBPR_EN | + PIIX4_FUNC0_DLC_PASSIVE_RELEASE_EN | + PIIX4_FUNC0_DLC_DELAYED_TRANSACTION_EN; + (void) pci_write_config_byte(dev, PIIX4_FUNC0_DLC, ndlc); +} + +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_0, + quirk_dlcsetup); diff --git a/arch/mips/pci/fixup-mpc30x.c b/arch/mips/pci/fixup-mpc30x.c index b67ddaa4712..8e4f8288eca 100644 --- a/arch/mips/pci/fixup-mpc30x.c +++ b/arch/mips/pci/fixup-mpc30x.c @@ -1,7 +1,7 @@ /* * fixup-mpc30x.c, The Victor MP-C303/304 specific PCI fixups. * - * Copyright (C) 2002,2004 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * Copyright (C) 2002,2004 Yoichi Yuasa <yuasa@linux-mips.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -21,21 +21,20 @@ #include <linux/pci.h> #include <asm/vr41xx/mpc30x.h> -#include <asm/vr41xx/vrc4173.h> -static const int internal_func_irqs[] __initdata = { +static const int internal_func_irqs[] __initconst = { VRC4173_CASCADE_IRQ, VRC4173_AC97_IRQ, VRC4173_USB_IRQ, }; -static const int irq_tab_mpc30x[] __initdata = { +static const int irq_tab_mpc30x[] __initconst = { [12] = VRC4173_PCMCIA1_IRQ, [13] = VRC4173_PCMCIA2_IRQ, [29] = MQ200_IRQ, }; -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { if (slot == 30) return internal_func_irqs[PCI_FUNC(dev->devfn)]; diff --git a/arch/mips/pci/fixup-ocelot-c.c b/arch/mips/pci/fixup-ocelot-c.c deleted file mode 100644 index d45494807a3..00000000000 --- a/arch/mips/pci/fixup-ocelot-c.c +++ /dev/null @@ -1,41 +0,0 @@ -/* - * Copyright 2002 Momentum Computer Inc. - * Author: Matthew Dharm <mdharm@momenco.com> - * - * Based on work for the Linux port to the Ocelot board, which is - * Copyright 2001 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * arch/mips/momentum/ocelot_g/pci.c - * Board-specific PCI routines for mv64340 controller. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - int bus = dev->bus->number; - - if (bus == 0 && slot == 1) - return 2; /* PCI-X A */ - if (bus == 1 && slot == 1) - return 12; /* PCI-X B */ - if (bus == 1 && slot == 2) - return 4; /* PCI B */ - -return 0; - panic("Whooops in pcibios_map_irq"); -} - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} diff --git a/arch/mips/pci/fixup-ocelot-g.c b/arch/mips/pci/fixup-ocelot-g.c deleted file mode 100644 index d7a652e326c..00000000000 --- a/arch/mips/pci/fixup-ocelot-g.c +++ /dev/null @@ -1,37 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * Copyright (C) 2004 Ralf Baechle (ralf@linux-mips.org) - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - int bus = dev->bus->number; - - if (bus == 0 && slot == 1) /* Intel 82543 Gigabit MAC */ - return 2; /* irq_nr is 2 for INT0 */ - - if (bus == 0 && slot == 2) /* Intel 82543 Gigabit MAC */ - return 3; /* irq_nr is 3 for INT1 */ - - if (bus == 1 && slot == 3) /* Intel 21555 bridge */ - return 5; /* irq_nr is 8 for INT6 */ - - if (bus == 1 && slot == 4) /* PMC Slot */ - return 9; /* irq_nr is 9 for INT7 */ - - return -1; -} - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} diff --git a/arch/mips/pci/fixup-ocelot.c b/arch/mips/pci/fixup-ocelot.c deleted file mode 100644 index 99629bd047c..00000000000 --- a/arch/mips/pci/fixup-ocelot.c +++ /dev/null @@ -1,75 +0,0 @@ -/* - * Copyright 2001 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * arch/mips/gt64120/momenco_ocelot/pci.c - * Board-specific PCI routines for gt64120 controller. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <asm/pci.h> - - -void __devinit pcibios_fixup_bus(struct pci_bus *bus) -{ - struct pci_bus *current_bus = bus; - struct pci_dev *devices; - struct list_head *devices_link; - u16 cmd; - - list_for_each(devices_link, &(current_bus->devices)) { - - devices = pci_dev_b(devices_link); - if (devices == NULL) - continue; - - if (PCI_SLOT(devices->devfn) == 1) { - /* - * Slot 1 is primary ether port, i82559 - * we double-check against that assumption - */ - if ((devices->vendor != 0x8086) || - (devices->device != 0x1209)) { - panic("pcibios_fixup_bus: found " - "unexpected PCI device in slot 1."); - } - devices->irq = 2; /* irq_nr is 2 for INT0 */ - } else if (PCI_SLOT(devices->devfn) == 2) { - /* - * Slot 2 is secondary ether port, i21143 - * we double-check against that assumption - */ - if ((devices->vendor != 0x1011) || - (devices->device != 0x19)) { - panic("galileo_pcibios_fixup_bus: " - "found unexpected PCI device in slot 2."); - } - devices->irq = 3; /* irq_nr is 3 for INT1 */ - } else if (PCI_SLOT(devices->devfn) == 4) { - /* PMC Slot 1 */ - devices->irq = 8; /* irq_nr is 8 for INT6 */ - } else if (PCI_SLOT(devices->devfn) == 5) { - /* PMC Slot 1 */ - devices->irq = 9; /* irq_nr is 9 for INT7 */ - } else { - /* We don't have assign interrupts for other devices. */ - devices->irq = 0xff; - } - - /* Assign an interrupt number for the device */ - bus->ops->write_byte(devices, PCI_INTERRUPT_LINE, - devices->irq); - - /* enable master */ - bus->ops->read_word(devices, PCI_COMMAND, &cmd); - cmd |= PCI_COMMAND_MASTER; - bus->ops->write_word(devices, PCI_COMMAND, cmd); - } -} diff --git a/arch/mips/pci/fixup-ocelot3.c b/arch/mips/pci/fixup-ocelot3.c deleted file mode 100644 index ececc03ec62..00000000000 --- a/arch/mips/pci/fixup-ocelot3.c +++ /dev/null @@ -1,41 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2004 Montavista Software Inc. - * Author: Manish Lachwani (mlachwani@mvista.com) - * - * Looking at the schematics for the Ocelot-3 board, there are - * two PCI busses and each bus has two PCI slots. - */ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/pci.h> -#include <asm/mipsregs.h> - -/* - * Do platform specific device initialization at - * pci_enable_device() time - */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - int bus = dev->bus->number; - - if (bus == 0 && slot == 1) - return 2; /* PCI-X A */ - if (bus == 0 && slot == 2) - return 3; /* PCI-X B */ - if (bus == 1 && slot == 1) - return 4; /* PCI A */ - if (bus == 1 && slot == 2) - return 5; /* PCI B */ - -return 0; - panic("Whooops in pcibios_map_irq"); -} diff --git a/arch/mips/pci/fixup-pmcmsp.c b/arch/mips/pci/fixup-pmcmsp.c new file mode 100644 index 00000000000..fab405c21c2 --- /dev/null +++ b/arch/mips/pci/fixup-pmcmsp.c @@ -0,0 +1,216 @@ +/* + * PMC-Sierra MSP board specific pci fixups. + * + * Copyright 2001 MontaVista Software Inc. + * Copyright 2005-2007 PMC-Sierra, Inc + * + * Author: MontaVista Software, Inc. + * ppopov@mvista.com or source@mvista.com + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifdef CONFIG_PCI + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/byteorder.h> + +#include <msp_pci.h> +#include <msp_cic_int.h> + +/* PCI interrupt pins */ +#define IRQ4 MSP_INT_EXT4 +#define IRQ5 MSP_INT_EXT5 +#define IRQ6 MSP_INT_EXT6 + +#if defined(CONFIG_PMC_MSP7120_GW) +/* Garibaldi Board IRQ wiring to PCI slots */ +static char irq_tab[][5] __initdata = { + /* INTA INTB INTC INTD */ + {0, 0, 0, 0, 0 }, /* (AD[0]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[1]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[2]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[3]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[4]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[5]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[6]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[7]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[8]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[9]): Unused */ + {0, 0, 0, 0, 0 }, /* 0 (AD[10]): Unused */ + {0, 0, 0, 0, 0 }, /* 1 (AD[11]): Unused */ + {0, 0, 0, 0, 0 }, /* 2 (AD[12]): Unused */ + {0, 0, 0, 0, 0 }, /* 3 (AD[13]): Unused */ + {0, 0, 0, 0, 0 }, /* 4 (AD[14]): Unused */ + {0, 0, 0, 0, 0 }, /* 5 (AD[15]): Unused */ + {0, 0, 0, 0, 0 }, /* 6 (AD[16]): Unused */ + {0, 0, 0, 0, 0 }, /* 7 (AD[17]): Unused */ + {0, 0, 0, 0, 0 }, /* 8 (AD[18]): Unused */ + {0, 0, 0, 0, 0 }, /* 9 (AD[19]): Unused */ + {0, 0, 0, 0, 0 }, /* 10 (AD[20]): Unused */ + {0, 0, 0, 0, 0 }, /* 11 (AD[21]): Unused */ + {0, 0, 0, 0, 0 }, /* 12 (AD[22]): Unused */ + {0, 0, 0, 0, 0 }, /* 13 (AD[23]): Unused */ + {0, 0, 0, 0, 0 }, /* 14 (AD[24]): Unused */ + {0, 0, 0, 0, 0 }, /* 15 (AD[25]): Unused */ + {0, 0, 0, 0, 0 }, /* 16 (AD[26]): Unused */ + {0, 0, 0, 0, 0 }, /* 17 (AD[27]): Unused */ + {0, IRQ4, IRQ4, 0, 0 }, /* 18 (AD[28]): slot 0 */ + {0, 0, 0, 0, 0 }, /* 19 (AD[29]): Unused */ + {0, IRQ5, IRQ5, 0, 0 }, /* 20 (AD[30]): slot 1 */ + {0, IRQ6, IRQ6, 0, 0 } /* 21 (AD[31]): slot 2 */ +}; + +#elif defined(CONFIG_PMC_MSP7120_EVAL) + +/* MSP7120 Eval Board IRQ wiring to PCI slots */ +static char irq_tab[][5] __initdata = { + /* INTA INTB INTC INTD */ + {0, 0, 0, 0, 0 }, /* (AD[0]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[1]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[2]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[3]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[4]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[5]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[6]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[7]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[8]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[9]): Unused */ + {0, 0, 0, 0, 0 }, /* 0 (AD[10]): Unused */ + {0, 0, 0, 0, 0 }, /* 1 (AD[11]): Unused */ + {0, 0, 0, 0, 0 }, /* 2 (AD[12]): Unused */ + {0, 0, 0, 0, 0 }, /* 3 (AD[13]): Unused */ + {0, 0, 0, 0, 0 }, /* 4 (AD[14]): Unused */ + {0, 0, 0, 0, 0 }, /* 5 (AD[15]): Unused */ + {0, IRQ6, IRQ6, 0, 0 }, /* 6 (AD[16]): slot 3 (mini) */ + {0, IRQ5, IRQ5, 0, 0 }, /* 7 (AD[17]): slot 2 (mini) */ + {0, IRQ4, IRQ4, IRQ4, IRQ4}, /* 8 (AD[18]): slot 0 (PCI) */ + {0, IRQ5, IRQ5, IRQ5, IRQ5}, /* 9 (AD[19]): slot 1 (PCI) */ + {0, 0, 0, 0, 0 }, /* 10 (AD[20]): Unused */ + {0, 0, 0, 0, 0 }, /* 11 (AD[21]): Unused */ + {0, 0, 0, 0, 0 }, /* 12 (AD[22]): Unused */ + {0, 0, 0, 0, 0 }, /* 13 (AD[23]): Unused */ + {0, 0, 0, 0, 0 }, /* 14 (AD[24]): Unused */ + {0, 0, 0, 0, 0 }, /* 15 (AD[25]): Unused */ + {0, 0, 0, 0, 0 }, /* 16 (AD[26]): Unused */ + {0, 0, 0, 0, 0 }, /* 17 (AD[27]): Unused */ + {0, 0, 0, 0, 0 }, /* 18 (AD[28]): Unused */ + {0, 0, 0, 0, 0 }, /* 19 (AD[29]): Unused */ + {0, 0, 0, 0, 0 }, /* 20 (AD[30]): Unused */ + {0, 0, 0, 0, 0 } /* 21 (AD[31]): Unused */ +}; + +#else + +/* Unknown board -- don't assign any IRQs */ +static char irq_tab[][5] __initdata = { + /* INTA INTB INTC INTD */ + {0, 0, 0, 0, 0 }, /* (AD[0]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[1]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[2]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[3]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[4]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[5]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[6]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[7]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[8]): Unused */ + {0, 0, 0, 0, 0 }, /* (AD[9]): Unused */ + {0, 0, 0, 0, 0 }, /* 0 (AD[10]): Unused */ + {0, 0, 0, 0, 0 }, /* 1 (AD[11]): Unused */ + {0, 0, 0, 0, 0 }, /* 2 (AD[12]): Unused */ + {0, 0, 0, 0, 0 }, /* 3 (AD[13]): Unused */ + {0, 0, 0, 0, 0 }, /* 4 (AD[14]): Unused */ + {0, 0, 0, 0, 0 }, /* 5 (AD[15]): Unused */ + {0, 0, 0, 0, 0 }, /* 6 (AD[16]): Unused */ + {0, 0, 0, 0, 0 }, /* 7 (AD[17]): Unused */ + {0, 0, 0, 0, 0 }, /* 8 (AD[18]): Unused */ + {0, 0, 0, 0, 0 }, /* 9 (AD[19]): Unused */ + {0, 0, 0, 0, 0 }, /* 10 (AD[20]): Unused */ + {0, 0, 0, 0, 0 }, /* 11 (AD[21]): Unused */ + {0, 0, 0, 0, 0 }, /* 12 (AD[22]): Unused */ + {0, 0, 0, 0, 0 }, /* 13 (AD[23]): Unused */ + {0, 0, 0, 0, 0 }, /* 14 (AD[24]): Unused */ + {0, 0, 0, 0, 0 }, /* 15 (AD[25]): Unused */ + {0, 0, 0, 0, 0 }, /* 16 (AD[26]): Unused */ + {0, 0, 0, 0, 0 }, /* 17 (AD[27]): Unused */ + {0, 0, 0, 0, 0 }, /* 18 (AD[28]): Unused */ + {0, 0, 0, 0, 0 }, /* 19 (AD[29]): Unused */ + {0, 0, 0, 0, 0 }, /* 20 (AD[30]): Unused */ + {0, 0, 0, 0, 0 } /* 21 (AD[31]): Unused */ +}; +#endif + +/***************************************************************************** + * + * FUNCTION: pcibios_plat_dev_init + * _________________________________________________________________________ + * + * DESCRIPTION: Perform platform specific device initialization at + * pci_enable_device() time. + * None are needed for the MSP7120 PCI Controller. + * + * INPUTS: dev - structure describing the PCI device + * + * OUTPUTS: none + * + * RETURNS: PCIBIOS_SUCCESSFUL + * + ****************************************************************************/ +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return PCIBIOS_SUCCESSFUL; +} + +/***************************************************************************** + * + * FUNCTION: pcibios_map_irq + * _________________________________________________________________________ + * + * DESCRIPTION: Perform board supplied PCI IRQ mapping routine. + * + * INPUTS: dev - unused + * slot - PCI slot. Identified by which bit of the AD[] bus + * drives the IDSEL line. AD[10] is 0, AD[31] is + * slot 21. + * pin - numbered using the scheme of the PCI_INTERRUPT_PIN + * field of the config header. + * + * OUTPUTS: none + * + * RETURNS: IRQ number + * + ****************************************************************************/ +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ +#if !defined(CONFIG_PMC_MSP7120_GW) && !defined(CONFIG_PMC_MSP7120_EVAL) + printk(KERN_WARNING "PCI: unknown board, no PCI IRQs assigned.\n"); +#endif + printk(KERN_WARNING "PCI: irq_tab returned %d for slot=%d pin=%d\n", + irq_tab[slot][pin], slot, pin); + + return irq_tab[slot][pin]; +} + +#endif /* CONFIG_PCI */ diff --git a/arch/mips/pci/fixup-pnx8550.c b/arch/mips/pci/fixup-pnx8550.c deleted file mode 100644 index 4256b3b30b7..00000000000 --- a/arch/mips/pci/fixup-pnx8550.c +++ /dev/null @@ -1,57 +0,0 @@ -/* - * Philips PNX8550 pci fixups. - * - * Copyright 2005 Embedded Alley Solutions, Inc - * source@embeddealley.com - * - * This program is free software; you can distribute it and/or modify it - * under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <asm/mach-pnx8550/pci.h> -#include <asm/mach-pnx8550/int.h> - - -#undef DEBUG -#ifdef DEBUG -#define DBG(x...) printk(x) -#else -#define DBG(x...) -#endif - -extern char irq_tab_jbs[][5]; - -void __init pcibios_fixup_resources(struct pci_dev *dev) -{ - /* no need to fixup IO resources */ -} - -void __init pcibios_fixup(void) -{ - /* nothing to do here */ -} - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - return irq_tab_jbs[slot][pin]; -} - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} diff --git a/arch/mips/pci/fixup-rbtx4927.c b/arch/mips/pci/fixup-rbtx4927.c index ceeb1860895..321db265829 100644 --- a/arch/mips/pci/fixup-rbtx4927.c +++ b/arch/mips/pci/fixup-rbtx4927.c @@ -33,108 +33,41 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> +#include <asm/txx9/pci.h> +#include <asm/txx9/rbtx4927.h> -#include <asm/tx4927/tx4927.h> -#include <asm/tx4927/tx4927_pci.h> - -#undef DEBUG -#ifdef DEBUG -#define DBG(x...) printk(x) -#else -#define DBG(x...) -#endif - -/* look up table for backplane pci irq for slots 17-20 by pin # */ -static unsigned char backplane_pci_irq[4][4] = { - /* PJ6 SLOT: 17, PIN: 1 */ {TX4927_IRQ_IOC_PCIA, - /* PJ6 SLOT: 17, PIN: 2 */ - TX4927_IRQ_IOC_PCIB, - /* PJ6 SLOT: 17, PIN: 3 */ - TX4927_IRQ_IOC_PCIC, - /* PJ6 SLOT: 17, PIN: 4 */ - TX4927_IRQ_IOC_PCID}, - /* SB SLOT: 18, PIN: 1 */ {TX4927_IRQ_IOC_PCIB, - /* SB SLOT: 18, PIN: 2 */ - TX4927_IRQ_IOC_PCIC, - /* SB SLOT: 18, PIN: 3 */ - TX4927_IRQ_IOC_PCID, - /* SB SLOT: 18, PIN: 4 */ - TX4927_IRQ_IOC_PCIA}, - /* PJ5 SLOT: 19, PIN: 1 */ {TX4927_IRQ_IOC_PCIC, - /* PJ5 SLOT: 19, PIN: 2 */ - TX4927_IRQ_IOC_PCID, - /* PJ5 SLOT: 19, PIN: 3 */ - TX4927_IRQ_IOC_PCIA, - /* PJ5 SLOT: 19, PIN: 4 */ - TX4927_IRQ_IOC_PCIB}, - /* PJ4 SLOT: 20, PIN: 1 */ {TX4927_IRQ_IOC_PCID, - /* PJ4 SLOT: 20, PIN: 2 */ - TX4927_IRQ_IOC_PCIA, - /* PJ4 SLOT: 20, PIN: 3 */ - TX4927_IRQ_IOC_PCIB, - /* PJ4 SLOT: 20, PIN: 4 */ - TX4927_IRQ_IOC_PCIC} -}; - -int pci_get_irq(struct pci_dev *dev, int pin) +int __init rbtx4927_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { unsigned char irq = pin; - DBG("pci_get_irq: pin is %d\n", pin); /* IRQ rotation */ irq--; /* 0-3 */ - if (dev->bus->parent == NULL && - PCI_SLOT(dev->devfn) == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) { - printk("Onboard PCI_SLOT(dev->devfn) is %d\n", - PCI_SLOT(dev->devfn)); - /* IDSEL=A23 is tx4927 onboard pci slot */ - irq = (irq + PCI_SLOT(dev->devfn)) % 4; - irq++; /* 1-4 */ - DBG("irq is now %d\n", irq); - - switch (irq) { - case 1: - irq = TX4927_IRQ_IOC_PCIA; - break; - case 2: - irq = TX4927_IRQ_IOC_PCIB; - break; - case 3: - irq = TX4927_IRQ_IOC_PCIC; - break; - case 4: - irq = TX4927_IRQ_IOC_PCID; - break; - } + if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) { + /* PCI CardSlot (IDSEL=A23) */ + /* PCIA => PCIA */ + irq = (irq + 0 + slot) % 4; } else { /* PCI Backplane */ - DBG("PCI Backplane PCI_SLOT(dev->devfn) is %d\n", - PCI_SLOT(dev->devfn)); - irq = backplane_pci_irq[PCI_SLOT(dev->devfn) - 17][irq]; + if (txx9_pci_option & TXX9_PCI_OPT_PICMG) + irq = (irq + 33 - slot) % 4; + else + irq = (irq + 3 + slot) % 4; } - DBG("assigned irq %d\n", irq); - return irq; -} - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - unsigned char irq; - - printk("PCI Setup for pin %d \n", pin); - - if (dev->device == 0x9130) /* IDE */ - irq = 14; - else - irq = pci_get_irq(dev, pin); + irq++; /* 1-4 */ + switch (irq) { + case 1: + irq = RBTX4927_IRQ_IOC_PCIA; + break; + case 2: + irq = RBTX4927_IRQ_IOC_PCIB; + break; + case 3: + irq = RBTX4927_IRQ_IOC_PCIC; + break; + case 4: + irq = RBTX4927_IRQ_IOC_PCID; + break; + } return irq; } - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} diff --git a/arch/mips/pci/fixup-rbtx4938.c b/arch/mips/pci/fixup-rbtx4938.c new file mode 100644 index 00000000000..a80579af609 --- /dev/null +++ b/arch/mips/pci/fixup-rbtx4938.c @@ -0,0 +1,53 @@ +/* + * Toshiba rbtx4938 pci routines + * Copyright (C) 2000-2001 Toshiba Corporation + * + * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the + * terms of the GNU General Public License version 2. This program is + * licensed "as is" without any warranty of any kind, whether express + * or implied. + * + * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com) + */ +#include <linux/types.h> +#include <asm/txx9/pci.h> +#include <asm/txx9/rbtx4938.h> + +int __init rbtx4938_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + int irq = tx4938_pcic1_map_irq(dev, slot); + + if (irq >= 0) + return irq; + irq = pin; + /* IRQ rotation */ + irq--; /* 0-3 */ + if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) { + /* PCI CardSlot (IDSEL=A23) */ + /* PCIA => PCIA (IDSEL=A23) */ + irq = (irq + 0 + slot) % 4; + } else { + /* PCI Backplane */ + if (txx9_pci_option & TXX9_PCI_OPT_PICMG) + irq = (irq + 33 - slot) % 4; + else + irq = (irq + 3 + slot) % 4; + } + irq++; /* 1-4 */ + + switch (irq) { + case 1: + irq = RBTX4938_IRQ_IOC_PCIA; + break; + case 2: + irq = RBTX4938_IRQ_IOC_PCIB; + break; + case 3: + irq = RBTX4938_IRQ_IOC_PCIC; + break; + case 4: + irq = RBTX4938_IRQ_IOC_PCID; + break; + } + return irq; +} diff --git a/arch/mips/pci/fixup-ev96100.c b/arch/mips/pci/fixup-rc32434.c index e2bc977b6d5..7fcafd5da7d 100644 --- a/arch/mips/pci/fixup-ev96100.c +++ b/arch/mips/pci/fixup-rc32434.c @@ -1,11 +1,7 @@ /* - * - * BRIEF MODULE DESCRIPTION - * EV96100 Board specific pci fixups. - * * Copyright 2001 MontaVista Software Inc. * Author: MontaVista Software, Inc. - * ppopov@mvista.com or source@mvista.com + * stevel@mvista.com or source@mvista.com * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -27,20 +23,45 @@ * with this program; if not, write to the Free Software Foundation, Inc., * 675 Mass Ave, Cambridge, MA 02139, USA. */ -#include <linux/init.h> + #include <linux/types.h> #include <linux/pci.h> +#include <linux/kernel.h> + +#include <asm/mach-rc32434/rc32434.h> +#include <asm/mach-rc32434/irq.h> -static char irq_tab_ev96100[][5] __initdata = { - [8] = { 0, 5, 5, 5, 5 }, - [9] = { 0, 2, 2, 2, 2 } +static int irq_map[2][12] = { + {0, 0, 2, 3, 2, 3, 0, 0, 0, 0, 0, 1}, + {0, 0, 1, 3, 0, 2, 1, 3, 0, 2, 1, 3} }; -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { - return irq_tab_ev96100[slot][pin]; + int irq = 0; + + if (dev->bus->number < 2 && PCI_SLOT(dev->devfn) < 12) + irq = irq_map[dev->bus->number][PCI_SLOT(dev->devfn)]; + + return irq + GROUP4_IRQ_BASE + 4; } +static void rc32434_pci_early_fixup(struct pci_dev *dev) +{ + if (PCI_SLOT(dev->devfn) == 6 && dev->bus->number == 0) { + /* disable prefetched memory range */ + pci_write_config_word(dev, PCI_PREF_MEMORY_LIMIT, 0); + pci_write_config_word(dev, PCI_PREF_MEMORY_BASE, 0x10); + + pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4); + } +} + +/* + * The fixup applies to both the IDT and VIA devices present on the board + */ +DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, rc32434_pci_early_fixup); + /* Do platform specific device initialization at pci_enable_device() time */ int pcibios_plat_dev_init(struct pci_dev *dev) { diff --git a/arch/mips/pci/fixup-sb1250.c b/arch/mips/pci/fixup-sb1250.c index 13791b78e59..8feae9154ba 100644 --- a/arch/mips/pci/fixup-sb1250.c +++ b/arch/mips/pci/fixup-sb1250.c @@ -1,7 +1,5 @@ /* - * arch/mips/pci/fixup-sb1250.c - * - * Copyright (C) 2004 MIPS Technologies, Inc. All rights reserved. + * Copyright (C) 2004, 2006 MIPS Technologies, Inc. All rights reserved. * Author: Maciej W. Rozycki <macro@mips.com> * * This program is free software; you can redistribute it and/or @@ -10,15 +8,35 @@ * 2 of the License, or (at your option) any later version. */ -#include <linux/init.h> #include <linux/pci.h> /* + * Set the BCM1250, etc. PCI host bridge's TRDY timeout + * to the finite max. + */ +static void quirk_sb1250_pci(struct pci_dev *dev) +{ + pci_write_config_byte(dev, 0x40, 0xff); +} +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SIBYTE, PCI_DEVICE_ID_BCM1250_PCI, + quirk_sb1250_pci); + +/* * The BCM1250, etc. PCI/HT bridge reports as a host bridge. */ -static void __init quirk_sb1250_ht(struct pci_dev *dev) +static void quirk_sb1250_ht(struct pci_dev *dev) { dev->class = PCI_CLASS_BRIDGE_PCI << 8; } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SIBYTE, PCI_DEVICE_ID_BCM1250_HT, quirk_sb1250_ht); + +/* + * Set the SP1011 HT/PCI bridge's TRDY timeout to the finite max. + */ +static void quirk_sp1011(struct pci_dev *dev) +{ + pci_write_config_byte(dev, 0x64, 0xff); +} +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SIPACKETS, PCI_DEVICE_ID_SP1011, + quirk_sp1011); diff --git a/arch/mips/pci/fixup-sni.c b/arch/mips/pci/fixup-sni.c index a176f2ca865..f67ebeeb420 100644 --- a/arch/mips/pci/fixup-sni.c +++ b/arch/mips/pci/fixup-sni.c @@ -14,8 +14,10 @@ #include <asm/mipsregs.h> #include <asm/sni.h> +#include <irq.h> + /* - * Shortcuts ... + * PCIMT Shortcuts ... */ #define SCSI PCIMT_IRQ_SCSI #define ETH PCIMT_IRQ_ETHERNET @@ -39,12 +41,12 @@ * Logic CL-GD5434 VGA is device 3. */ static char irq_tab_rm200[8][5] __initdata = { - /* INTA INTB INTC INTD */ - { 0, 0, 0, 0, 0 }, /* EISA bridge */ + /* INTA INTB INTC INTD */ + { 0, 0, 0, 0, 0 }, /* EISA bridge */ { SCSI, SCSI, SCSI, SCSI, SCSI }, /* SCSI */ - { ETH, ETH, ETH, ETH, ETH }, /* Ethernet */ + { ETH, ETH, ETH, ETH, ETH }, /* Ethernet */ { INTB, INTB, INTB, INTB, INTB }, /* VGA */ - { 0, 0, 0, 0, 0 }, /* Unused */ + { 0, 0, 0, 0, 0 }, /* Unused */ { 0, INTB, INTC, INTD, INTA }, /* Slot 2 */ { 0, INTC, INTD, INTA, INTB }, /* Slot 3 */ { 0, INTD, INTA, INTB, INTC }, /* Slot 4 */ @@ -56,17 +58,71 @@ static char irq_tab_rm200[8][5] __initdata = { * The VGA card is optional for RM300 systems. */ static char irq_tab_rm300d[8][5] __initdata = { - /* INTA INTB INTC INTD */ - { 0, 0, 0, 0, 0 }, /* EISA bridge */ + /* INTA INTB INTC INTD */ + { 0, 0, 0, 0, 0 }, /* EISA bridge */ { SCSI, SCSI, SCSI, SCSI, SCSI }, /* SCSI */ { 0, INTC, INTD, INTA, INTB }, /* Slot 1 */ { INTB, INTB, INTB, INTB, INTB }, /* VGA */ - { 0, 0, 0, 0, 0 }, /* Unused */ + { 0, 0, 0, 0, 0 }, /* Unused */ { 0, INTB, INTC, INTD, INTA }, /* Slot 2 */ { 0, INTC, INTD, INTA, INTB }, /* Slot 3 */ { 0, INTD, INTA, INTB, INTC }, /* Slot 4 */ }; +static char irq_tab_rm300e[5][5] __initdata = { + /* INTA INTB INTC INTD */ + { 0, 0, 0, 0, 0 }, /* HOST bridge */ + { SCSI, SCSI, SCSI, SCSI, SCSI }, /* SCSI */ + { 0, INTC, INTD, INTA, INTB }, /* Bridge/i960 */ + { 0, INTD, INTA, INTB, INTC }, /* Slot 1 */ + { 0, INTA, INTB, INTC, INTD }, /* Slot 2 */ +}; +#undef SCSI +#undef ETH +#undef INTA +#undef INTB +#undef INTC +#undef INTD + + +/* + * PCIT Shortcuts ... + */ +#define SCSI0 PCIT_IRQ_SCSI0 +#define SCSI1 PCIT_IRQ_SCSI1 +#define ETH PCIT_IRQ_ETHERNET +#define INTA PCIT_IRQ_INTA +#define INTB PCIT_IRQ_INTB +#define INTC PCIT_IRQ_INTC +#define INTD PCIT_IRQ_INTD + +static char irq_tab_pcit[13][5] __initdata = { + /* INTA INTB INTC INTD */ + { 0, 0, 0, 0, 0 }, /* HOST bridge */ + { SCSI0, SCSI0, SCSI0, SCSI0, SCSI0 }, /* SCSI */ + { SCSI1, SCSI1, SCSI1, SCSI1, SCSI1 }, /* SCSI */ + { ETH, ETH, ETH, ETH, ETH }, /* Ethernet */ + { 0, INTA, INTB, INTC, INTD }, /* PCI-PCI bridge */ + { 0, 0, 0, 0, 0 }, /* Unused */ + { 0, 0, 0, 0, 0 }, /* Unused */ + { 0, 0, 0, 0, 0 }, /* Unused */ + { 0, INTA, INTB, INTC, INTD }, /* Slot 1 */ + { 0, INTB, INTC, INTD, INTA }, /* Slot 2 */ + { 0, INTC, INTD, INTA, INTB }, /* Slot 3 */ + { 0, INTD, INTA, INTB, INTC }, /* Slot 4 */ + { 0, INTA, INTB, INTC, INTD }, /* Slot 5 */ +}; + +static char irq_tab_pcit_cplus[13][5] __initdata = { + /* INTA INTB INTC INTD */ + { 0, 0, 0, 0, 0 }, /* HOST bridge */ + { 0, INTB, INTC, INTD, INTA }, /* PCI Slot 9 */ + { 0, 0, 0, 0, 0 }, /* PCI-EISA */ + { 0, 0, 0, 0, 0 }, /* Unused */ + { 0, INTA, INTB, INTC, INTD }, /* PCI-PCI bridge */ + { 0, INTB, INTC, INTD, INTA }, /* fixup */ +}; + static inline int is_rm300_revd(void) { unsigned char csmsr = *(volatile unsigned char *)PCIMT_CSMSR; @@ -74,12 +130,37 @@ static inline int is_rm300_revd(void) return (csmsr & 0xa0) == 0x20; } -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { - if (is_rm300_revd()) - return irq_tab_rm300d[slot][pin]; + switch (sni_brd_type) { + case SNI_BRD_PCI_TOWER_CPLUS: + if (slot == 4) { + /* + * SNI messed up interrupt wiring for onboard + * PCI bus 1; we need to fix this up here + */ + while (dev && dev->bus->number != 1) + dev = dev->bus->self; + if (dev && dev->devfn >= PCI_DEVFN(4, 0)) + slot = 5; + } + return irq_tab_pcit_cplus[slot][pin]; + case SNI_BRD_PCI_TOWER: + return irq_tab_pcit[slot][pin]; - return irq_tab_rm200[slot][pin]; + case SNI_BRD_PCI_MTOWER: + if (is_rm300_revd()) + return irq_tab_rm300d[slot][pin]; + /* fall through */ + + case SNI_BRD_PCI_DESKTOP: + return irq_tab_rm200[slot][pin]; + + case SNI_BRD_PCI_MTOWER_CPLUS: + return irq_tab_rm300e[slot][pin]; + } + + return 0; } /* Do platform specific device initialization at pci_enable_device() time */ diff --git a/arch/mips/pci/fixup-tb0219.c b/arch/mips/pci/fixup-tb0219.c index 734f2b71e16..d0b0083fbd2 100644 --- a/arch/mips/pci/fixup-tb0219.c +++ b/arch/mips/pci/fixup-tb0219.c @@ -1,8 +1,8 @@ /* * fixup-tb0219.c, The TANBAC TB0219 specific PCI fixups. * - * Copyright (C) 2003 Megasolution Inc. <matsu@megasolution.jp> - * Copyright (C) 2004 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * Copyright (C) 2003 Megasolution Inc. <matsu@megasolution.jp> + * Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@linux-mips.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -23,7 +23,7 @@ #include <asm/vr41xx/tb0219.h> -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { int irq = -1; diff --git a/arch/mips/pci/fixup-tb0226.c b/arch/mips/pci/fixup-tb0226.c index c9e7cb4361a..4196ccf3ea3 100644 --- a/arch/mips/pci/fixup-tb0226.c +++ b/arch/mips/pci/fixup-tb0226.c @@ -1,7 +1,7 @@ /* * fixup-tb0226.c, The TANBAC TB0226 specific PCI fixups. * - * Copyright (C) 2002-2005 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * Copyright (C) 2002-2005 Yoichi Yuasa <yuasa@linux-mips.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -23,7 +23,7 @@ #include <asm/vr41xx/giu.h> #include <asm/vr41xx/tb0226.h> -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { int irq = -1; diff --git a/arch/mips/pci/fixup-tb0287.c b/arch/mips/pci/fixup-tb0287.c index fbe6bcb2819..8c5039ed75d 100644 --- a/arch/mips/pci/fixup-tb0287.c +++ b/arch/mips/pci/fixup-tb0287.c @@ -1,7 +1,7 @@ /* * fixup-tb0287.c, The TANBAC TB0287 specific PCI fixups. * - * Copyright (C) 2005 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * Copyright (C) 2005 Yoichi Yuasa <yuasa@linux-mips.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -22,7 +22,7 @@ #include <asm/vr41xx/tb0287.h> -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { unsigned char bus; int irq = -1; diff --git a/arch/mips/pci/fixup-tx4938.c b/arch/mips/pci/fixup-tx4938.c deleted file mode 100644 index f455520ada8..00000000000 --- a/arch/mips/pci/fixup-tx4938.c +++ /dev/null @@ -1,92 +0,0 @@ -/* - * Toshiba rbtx4938 pci routines - * Copyright (C) 2000-2001 Toshiba Corporation - * - * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the - * terms of the GNU General Public License version 2. This program is - * licensed "as is" without any warranty of any kind, whether express - * or implied. - * - * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com) - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <asm/tx4938/rbtx4938.h> - -extern struct pci_controller tx4938_pci_controller[]; - -int pci_get_irq(struct pci_dev *dev, int pin) -{ - int irq = pin; - u8 slot = PCI_SLOT(dev->devfn); - struct pci_controller *controller = (struct pci_controller *)dev->sysdata; - - if (controller == &tx4938_pci_controller[1]) { - /* TX4938 PCIC1 */ - switch (slot) { - case TX4938_PCIC_IDSEL_AD_TO_SLOT(31): - if (tx4938_ccfgptr->pcfg & TX4938_PCFG_ETH0_SEL) - return RBTX4938_IRQ_IRC + TX4938_IR_ETH0; - break; - case TX4938_PCIC_IDSEL_AD_TO_SLOT(30): - if (tx4938_ccfgptr->pcfg & TX4938_PCFG_ETH1_SEL) - return RBTX4938_IRQ_IRC + TX4938_IR_ETH1; - break; - } - return 0; - } - - /* IRQ rotation */ - irq--; /* 0-3 */ - if (dev->bus->parent == NULL && - (slot == TX4938_PCIC_IDSEL_AD_TO_SLOT(23))) { - /* PCI CardSlot (IDSEL=A23) */ - /* PCIA => PCIA (IDSEL=A23) */ - irq = (irq + 0 + slot) % 4; - } else { - /* PCI Backplane */ - irq = (irq + 33 - slot) % 4; - } - irq++; /* 1-4 */ - - switch (irq) { - case 1: - irq = RBTX4938_IRQ_IOC_PCIA; - break; - case 2: - irq = RBTX4938_IRQ_IOC_PCIB; - break; - case 3: - irq = RBTX4938_IRQ_IOC_PCIC; - break; - case 4: - irq = RBTX4938_IRQ_IOC_PCID; - break; - } - return irq; -} - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - unsigned char irq = 0; - - irq = pci_get_irq(dev, pin); - - printk(KERN_INFO "PCI: 0x%02x:0x%02x(0x%02x,0x%02x) IRQ=%d\n", - dev->bus->number, dev->devfn, PCI_SLOT(dev->devfn), - PCI_FUNC(dev->devfn), irq); - - return irq; -} - -/* - * Do platform specific device initialization at pci_enable_device() time - */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} - diff --git a/arch/mips/pci/fixup-vr4133.c b/arch/mips/pci/fixup-vr4133.c deleted file mode 100644 index a8a47b494b2..00000000000 --- a/arch/mips/pci/fixup-vr4133.c +++ /dev/null @@ -1,204 +0,0 @@ -/* - * arch/mips/vr41xx/nec-cmbvr4133/pci_fixup.c - * - * The NEC CMB-VR4133 Board specific PCI fixups. - * - * Author: Yoichi Yuasa <yyuasa@mvista.com, or source@mvista.com> and - * Alex Sapkov <asapkov@ru.mvista.com> - * - * 2003-2004 (c) MontaVista, Software, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program - * is licensed "as is" without any warranty of any kind, whether express - * or implied. - * - * Modified for support in 2.6 - * Author: Manish Lachwani (mlachwani@mvista.com) - * - */ -#include <linux/config.h> -#include <linux/init.h> -#include <linux/pci.h> - -#include <asm/io.h> -#include <asm/vr41xx/cmbvr4133.h> - -extern int vr4133_rockhopper; -extern void ali_m1535plus_init(struct pci_dev *dev); -extern void ali_m5229_init(struct pci_dev *dev); - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - /* - * We have to reset AMD PCnet adapter on Rockhopper since - * PMON leaves it enabled and generating interrupts. This leads - * to a lock if some PCI device driver later enables the IRQ line - * shared with PCnet and there is no AMD PCnet driver to catch its - * interrupts. - */ -#ifdef CONFIG_ROCKHOPPER - if (dev->vendor == PCI_VENDOR_ID_AMD && - dev->device == PCI_DEVICE_ID_AMD_LANCE) { - inl(pci_resource_start(dev, 0) + 0x18); - } -#endif - - /* - * we have to open the bridges' windows down to 0 because otherwise - * we cannot access ISA south bridge I/O registers that get mapped from - * 0. for example, 8259 PIC would be unaccessible without that - */ - if(dev->vendor == PCI_VENDOR_ID_INTEL && dev->device == PCI_DEVICE_ID_INTEL_S21152BB) { - pci_write_config_byte(dev, PCI_IO_BASE, 0); - if(dev->bus->number == 0) { - pci_write_config_word(dev, PCI_IO_BASE_UPPER16, 0); - } else { - pci_write_config_word(dev, PCI_IO_BASE_UPPER16, 1); - } - } - - return 0; -} - -/* - * M1535 IRQ mapping - * Feel free to change this, although it shouldn't be needed - */ -#define M1535_IRQ_INTA 7 -#define M1535_IRQ_INTB 9 -#define M1535_IRQ_INTC 10 -#define M1535_IRQ_INTD 11 - -#define M1535_IRQ_USB 9 -#define M1535_IRQ_IDE 14 -#define M1535_IRQ_IDE2 15 -#define M1535_IRQ_PS2 12 -#define M1535_IRQ_RTC 8 -#define M1535_IRQ_FDC 6 -#define M1535_IRQ_AUDIO 5 -#define M1535_IRQ_COM1 4 -#define M1535_IRQ_COM2 4 -#define M1535_IRQ_IRDA 3 -#define M1535_IRQ_KBD 1 -#define M1535_IRQ_TMR 0 - -/* Rockhopper "slots" assignment; this is hard-coded ... */ -#define ROCKHOPPER_M5451_SLOT 1 -#define ROCKHOPPER_M1535_SLOT 2 -#define ROCKHOPPER_M5229_SLOT 11 -#define ROCKHOPPER_M5237_SLOT 15 -#define ROCKHOPPER_PMU_SLOT 12 -/* ... and hard-wired. */ -#define ROCKHOPPER_PCI1_SLOT 3 -#define ROCKHOPPER_PCI2_SLOT 4 -#define ROCKHOPPER_PCI3_SLOT 5 -#define ROCKHOPPER_PCI4_SLOT 6 -#define ROCKHOPPER_PCNET_SLOT 1 - -#define M1535_IRQ_MASK(n) (1 << (n)) - -#define M1535_IRQ_EDGE (M1535_IRQ_MASK(M1535_IRQ_TMR) | \ - M1535_IRQ_MASK(M1535_IRQ_KBD) | \ - M1535_IRQ_MASK(M1535_IRQ_COM1) | \ - M1535_IRQ_MASK(M1535_IRQ_COM2) | \ - M1535_IRQ_MASK(M1535_IRQ_IRDA) | \ - M1535_IRQ_MASK(M1535_IRQ_RTC) | \ - M1535_IRQ_MASK(M1535_IRQ_FDC) | \ - M1535_IRQ_MASK(M1535_IRQ_PS2)) - -#define M1535_IRQ_LEVEL (M1535_IRQ_MASK(M1535_IRQ_IDE) | \ - M1535_IRQ_MASK(M1535_IRQ_USB) | \ - M1535_IRQ_MASK(M1535_IRQ_INTA) | \ - M1535_IRQ_MASK(M1535_IRQ_INTB) | \ - M1535_IRQ_MASK(M1535_IRQ_INTC) | \ - M1535_IRQ_MASK(M1535_IRQ_INTD)) - -struct irq_map_entry { - u16 bus; - u8 slot; - u8 irq; -}; -static struct irq_map_entry int_map[] = { - {1, ROCKHOPPER_M5451_SLOT, M1535_IRQ_AUDIO}, /* Audio controller */ - {1, ROCKHOPPER_PCI1_SLOT, M1535_IRQ_INTD}, /* PCI slot #1 */ - {1, ROCKHOPPER_PCI2_SLOT, M1535_IRQ_INTC}, /* PCI slot #2 */ - {1, ROCKHOPPER_M5237_SLOT, M1535_IRQ_USB}, /* USB host controller */ - {1, ROCKHOPPER_M5229_SLOT, IDE_PRIMARY_IRQ}, /* IDE controller */ - {2, ROCKHOPPER_PCNET_SLOT, M1535_IRQ_INTD}, /* AMD Am79c973 on-board - ethernet */ - {2, ROCKHOPPER_PCI3_SLOT, M1535_IRQ_INTB}, /* PCI slot #3 */ - {2, ROCKHOPPER_PCI4_SLOT, M1535_IRQ_INTC} /* PCI slot #4 */ -}; - -static int pci_intlines[] = - { M1535_IRQ_INTA, M1535_IRQ_INTB, M1535_IRQ_INTC, M1535_IRQ_INTD }; - -/* Determine the Rockhopper IRQ line number for the PCI device */ -int rockhopper_get_irq(struct pci_dev *dev, u8 pin, u8 slot) -{ - struct pci_bus *bus; - int i; - - bus = dev->bus; - if (bus == NULL) - return -1; - - for (i = 0; i < sizeof (int_map) / sizeof (int_map[0]); i++) { - if (int_map[i].bus == bus->number && int_map[i].slot == slot) { - int line; - for (line = 0; line < 4; line++) - if (pci_intlines[line] == int_map[i].irq) - break; - if (line < 4) - return pci_intlines[(line + (pin - 1)) % 4]; - else - return int_map[i].irq; - } - } - return -1; -} - -#ifdef CONFIG_ROCKHOPPER -void i8259_init(void) -{ - outb(0x11, 0x20); /* Master ICW1 */ - outb(I8259_IRQ_BASE, 0x21); /* Master ICW2 */ - outb(0x04, 0x21); /* Master ICW3 */ - outb(0x01, 0x21); /* Master ICW4 */ - outb(0xff, 0x21); /* Master IMW */ - - outb(0x11, 0xa0); /* Slave ICW1 */ - outb(I8259_IRQ_BASE + 8, 0xa1); /* Slave ICW2 */ - outb(0x02, 0xa1); /* Slave ICW3 */ - outb(0x01, 0xa1); /* Slave ICW4 */ - outb(0xff, 0xa1); /* Slave IMW */ - - outb(0x00, 0x4d0); - outb(0x02, 0x4d1); /* USB IRQ9 is level */ -} -#endif - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - extern int pci_probe_only; - pci_probe_only = 1; - -#ifdef CONFIG_ROCKHOPPER - if( dev->bus->number == 1 && vr4133_rockhopper ) { - if(slot == ROCKHOPPER_PCI1_SLOT || slot == ROCKHOPPER_PCI2_SLOT) - dev->irq = CMBVR41XX_INTA_IRQ; - else - dev->irq = rockhopper_get_irq(dev, pin, slot); - } else - dev->irq = CMBVR41XX_INTA_IRQ; -#else - dev->irq = CMBVR41XX_INTA_IRQ; -#endif - - return dev->irq; -} - -DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, ali_m1535plus_init); -DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5229, ali_m5229_init); - - diff --git a/arch/mips/pci/fixup-yosemite.c b/arch/mips/pci/fixup-yosemite.c deleted file mode 100644 index 81d77a587a5..00000000000 --- a/arch/mips/pci/fixup-yosemite.c +++ /dev/null @@ -1,41 +0,0 @@ -/* - * Copyright 2003 PMC-Sierra - * Author: Manish Lachwani (lachwani@pmc-sierra.com) - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/pci.h> - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - if (pin == 0) - return -1; - - return 3; /* Everything goes to one irq bit */ -} - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} diff --git a/arch/mips/pci/msi-octeon.c b/arch/mips/pci/msi-octeon.c new file mode 100644 index 00000000000..ab0c5d14c6f --- /dev/null +++ b/arch/mips/pci/msi-octeon.c @@ -0,0 +1,438 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2005-2009, 2010 Cavium Networks + */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/msi.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> + +#include <asm/octeon/octeon.h> +#include <asm/octeon/cvmx-npi-defs.h> +#include <asm/octeon/cvmx-pci-defs.h> +#include <asm/octeon/cvmx-npei-defs.h> +#include <asm/octeon/cvmx-sli-defs.h> +#include <asm/octeon/cvmx-pexp-defs.h> +#include <asm/octeon/pci-octeon.h> + +/* + * Each bit in msi_free_irq_bitmask represents a MSI interrupt that is + * in use. + */ +static u64 msi_free_irq_bitmask[4]; + +/* + * Each bit in msi_multiple_irq_bitmask tells that the device using + * this bit in msi_free_irq_bitmask is also using the next bit. This + * is used so we can disable all of the MSI interrupts when a device + * uses multiple. + */ +static u64 msi_multiple_irq_bitmask[4]; + +/* + * This lock controls updates to msi_free_irq_bitmask and + * msi_multiple_irq_bitmask. + */ +static DEFINE_SPINLOCK(msi_free_irq_bitmask_lock); + +/* + * Number of MSI IRQs used. This variable is set up in + * the module init time. + */ +static int msi_irq_size; + +/** + * Called when a driver request MSI interrupts instead of the + * legacy INT A-D. This routine will allocate multiple interrupts + * for MSI devices that support them. A device can override this by + * programming the MSI control bits [6:4] before calling + * pci_enable_msi(). + * + * @dev: Device requesting MSI interrupts + * @desc: MSI descriptor + * + * Returns 0 on success. + */ +int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc) +{ + struct msi_msg msg; + u16 control; + int configured_private_bits; + int request_private_bits; + int irq = 0; + int irq_step; + u64 search_mask; + int index; + + /* + * Read the MSI config to figure out how many IRQs this device + * wants. Most devices only want 1, which will give + * configured_private_bits and request_private_bits equal 0. + */ + pci_read_config_word(dev, desc->msi_attrib.pos + PCI_MSI_FLAGS, + &control); + + /* + * If the number of private bits has been configured then use + * that value instead of the requested number. This gives the + * driver the chance to override the number of interrupts + * before calling pci_enable_msi(). + */ + configured_private_bits = (control & PCI_MSI_FLAGS_QSIZE) >> 4; + if (configured_private_bits == 0) { + /* Nothing is configured, so use the hardware requested size */ + request_private_bits = (control & PCI_MSI_FLAGS_QMASK) >> 1; + } else { + /* + * Use the number of configured bits, assuming the + * driver wanted to override the hardware request + * value. + */ + request_private_bits = configured_private_bits; + } + + /* + * The PCI 2.3 spec mandates that there are at most 32 + * interrupts. If this device asks for more, only give it one. + */ + if (request_private_bits > 5) + request_private_bits = 0; + +try_only_one: + /* + * The IRQs have to be aligned on a power of two based on the + * number being requested. + */ + irq_step = 1 << request_private_bits; + + /* Mask with one bit for each IRQ */ + search_mask = (1 << irq_step) - 1; + + /* + * We're going to search msi_free_irq_bitmask_lock for zero + * bits. This represents an MSI interrupt number that isn't in + * use. + */ + spin_lock(&msi_free_irq_bitmask_lock); + for (index = 0; index < msi_irq_size/64; index++) { + for (irq = 0; irq < 64; irq += irq_step) { + if ((msi_free_irq_bitmask[index] & (search_mask << irq)) == 0) { + msi_free_irq_bitmask[index] |= search_mask << irq; + msi_multiple_irq_bitmask[index] |= (search_mask >> 1) << irq; + goto msi_irq_allocated; + } + } + } +msi_irq_allocated: + spin_unlock(&msi_free_irq_bitmask_lock); + + /* Make sure the search for available interrupts didn't fail */ + if (irq >= 64) { + if (request_private_bits) { + pr_err("arch_setup_msi_irq: Unable to find %d free interrupts, trying just one", + 1 << request_private_bits); + request_private_bits = 0; + goto try_only_one; + } else + panic("arch_setup_msi_irq: Unable to find a free MSI interrupt"); + } + + /* MSI interrupts start at logical IRQ OCTEON_IRQ_MSI_BIT0 */ + irq += index*64; + irq += OCTEON_IRQ_MSI_BIT0; + + switch (octeon_dma_bar_type) { + case OCTEON_DMA_BAR_TYPE_SMALL: + /* When not using big bar, Bar 0 is based at 128MB */ + msg.address_lo = + ((128ul << 20) + CVMX_PCI_MSI_RCV) & 0xffffffff; + msg.address_hi = ((128ul << 20) + CVMX_PCI_MSI_RCV) >> 32; + break; + case OCTEON_DMA_BAR_TYPE_BIG: + /* When using big bar, Bar 0 is based at 0 */ + msg.address_lo = (0 + CVMX_PCI_MSI_RCV) & 0xffffffff; + msg.address_hi = (0 + CVMX_PCI_MSI_RCV) >> 32; + break; + case OCTEON_DMA_BAR_TYPE_PCIE: + /* When using PCIe, Bar 0 is based at 0 */ + /* FIXME CVMX_NPEI_MSI_RCV* other than 0? */ + msg.address_lo = (0 + CVMX_NPEI_PCIE_MSI_RCV) & 0xffffffff; + msg.address_hi = (0 + CVMX_NPEI_PCIE_MSI_RCV) >> 32; + break; + case OCTEON_DMA_BAR_TYPE_PCIE2: + /* When using PCIe2, Bar 0 is based at 0 */ + msg.address_lo = (0 + CVMX_SLI_PCIE_MSI_RCV) & 0xffffffff; + msg.address_hi = (0 + CVMX_SLI_PCIE_MSI_RCV) >> 32; + break; + default: + panic("arch_setup_msi_irq: Invalid octeon_dma_bar_type"); + } + msg.data = irq - OCTEON_IRQ_MSI_BIT0; + + /* Update the number of IRQs the device has available to it */ + control &= ~PCI_MSI_FLAGS_QSIZE; + control |= request_private_bits << 4; + pci_write_config_word(dev, desc->msi_attrib.pos + PCI_MSI_FLAGS, + control); + + irq_set_msi_desc(irq, desc); + write_msi_msg(irq, &msg); + return 0; +} + +int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) +{ + struct msi_desc *entry; + int ret; + + /* + * MSI-X is not supported. + */ + if (type == PCI_CAP_ID_MSIX) + return -EINVAL; + + /* + * If an architecture wants to support multiple MSI, it needs to + * override arch_setup_msi_irqs() + */ + if (type == PCI_CAP_ID_MSI && nvec > 1) + return 1; + + list_for_each_entry(entry, &dev->msi_list, list) { + ret = arch_setup_msi_irq(dev, entry); + if (ret < 0) + return ret; + if (ret > 0) + return -ENOSPC; + } + + return 0; +} + +/** + * Called when a device no longer needs its MSI interrupts. All + * MSI interrupts for the device are freed. + * + * @irq: The devices first irq number. There may be multple in sequence. + */ +void arch_teardown_msi_irq(unsigned int irq) +{ + int number_irqs; + u64 bitmask; + int index = 0; + int irq0; + + if ((irq < OCTEON_IRQ_MSI_BIT0) + || (irq > msi_irq_size + OCTEON_IRQ_MSI_BIT0)) + panic("arch_teardown_msi_irq: Attempted to teardown illegal " + "MSI interrupt (%d)", irq); + + irq -= OCTEON_IRQ_MSI_BIT0; + index = irq / 64; + irq0 = irq % 64; + + /* + * Count the number of IRQs we need to free by looking at the + * msi_multiple_irq_bitmask. Each bit set means that the next + * IRQ is also owned by this device. + */ + number_irqs = 0; + while ((irq0 + number_irqs < 64) && + (msi_multiple_irq_bitmask[index] + & (1ull << (irq0 + number_irqs)))) + number_irqs++; + number_irqs++; + /* Mask with one bit for each IRQ */ + bitmask = (1 << number_irqs) - 1; + /* Shift the mask to the correct bit location */ + bitmask <<= irq0; + if ((msi_free_irq_bitmask[index] & bitmask) != bitmask) + panic("arch_teardown_msi_irq: Attempted to teardown MSI " + "interrupt (%d) not in use", irq); + + /* Checks are done, update the in use bitmask */ + spin_lock(&msi_free_irq_bitmask_lock); + msi_free_irq_bitmask[index] &= ~bitmask; + msi_multiple_irq_bitmask[index] &= ~bitmask; + spin_unlock(&msi_free_irq_bitmask_lock); +} + +static DEFINE_RAW_SPINLOCK(octeon_irq_msi_lock); + +static u64 msi_rcv_reg[4]; +static u64 mis_ena_reg[4]; + +static void octeon_irq_msi_enable_pcie(struct irq_data *data) +{ + u64 en; + unsigned long flags; + int msi_number = data->irq - OCTEON_IRQ_MSI_BIT0; + int irq_index = msi_number >> 6; + int irq_bit = msi_number & 0x3f; + + raw_spin_lock_irqsave(&octeon_irq_msi_lock, flags); + en = cvmx_read_csr(mis_ena_reg[irq_index]); + en |= 1ull << irq_bit; + cvmx_write_csr(mis_ena_reg[irq_index], en); + cvmx_read_csr(mis_ena_reg[irq_index]); + raw_spin_unlock_irqrestore(&octeon_irq_msi_lock, flags); +} + +static void octeon_irq_msi_disable_pcie(struct irq_data *data) +{ + u64 en; + unsigned long flags; + int msi_number = data->irq - OCTEON_IRQ_MSI_BIT0; + int irq_index = msi_number >> 6; + int irq_bit = msi_number & 0x3f; + + raw_spin_lock_irqsave(&octeon_irq_msi_lock, flags); + en = cvmx_read_csr(mis_ena_reg[irq_index]); + en &= ~(1ull << irq_bit); + cvmx_write_csr(mis_ena_reg[irq_index], en); + cvmx_read_csr(mis_ena_reg[irq_index]); + raw_spin_unlock_irqrestore(&octeon_irq_msi_lock, flags); +} + +static struct irq_chip octeon_irq_chip_msi_pcie = { + .name = "MSI", + .irq_enable = octeon_irq_msi_enable_pcie, + .irq_disable = octeon_irq_msi_disable_pcie, +}; + +static void octeon_irq_msi_enable_pci(struct irq_data *data) +{ + /* + * Octeon PCI doesn't have the ability to mask/unmask MSI + * interrupts individually. Instead of masking/unmasking them + * in groups of 16, we simple assume MSI devices are well + * behaved. MSI interrupts are always enable and the ACK is + * assumed to be enough + */ +} + +static void octeon_irq_msi_disable_pci(struct irq_data *data) +{ + /* See comment in enable */ +} + +static struct irq_chip octeon_irq_chip_msi_pci = { + .name = "MSI", + .irq_enable = octeon_irq_msi_enable_pci, + .irq_disable = octeon_irq_msi_disable_pci, +}; + +/* + * Called by the interrupt handling code when an MSI interrupt + * occurs. + */ +static irqreturn_t __octeon_msi_do_interrupt(int index, u64 msi_bits) +{ + int irq; + int bit; + + bit = fls64(msi_bits); + if (bit) { + bit--; + /* Acknowledge it first. */ + cvmx_write_csr(msi_rcv_reg[index], 1ull << bit); + + irq = bit + OCTEON_IRQ_MSI_BIT0 + 64 * index; + do_IRQ(irq); + return IRQ_HANDLED; + } + return IRQ_NONE; +} + +#define OCTEON_MSI_INT_HANDLER_X(x) \ +static irqreturn_t octeon_msi_interrupt##x(int cpl, void *dev_id) \ +{ \ + u64 msi_bits = cvmx_read_csr(msi_rcv_reg[(x)]); \ + return __octeon_msi_do_interrupt((x), msi_bits); \ +} + +/* + * Create octeon_msi_interrupt{0-3} function body + */ +OCTEON_MSI_INT_HANDLER_X(0); +OCTEON_MSI_INT_HANDLER_X(1); +OCTEON_MSI_INT_HANDLER_X(2); +OCTEON_MSI_INT_HANDLER_X(3); + +/* + * Initializes the MSI interrupt handling code + */ +int __init octeon_msi_initialize(void) +{ + int irq; + struct irq_chip *msi; + + if (octeon_dma_bar_type == OCTEON_DMA_BAR_TYPE_PCIE) { + msi_rcv_reg[0] = CVMX_PEXP_NPEI_MSI_RCV0; + msi_rcv_reg[1] = CVMX_PEXP_NPEI_MSI_RCV1; + msi_rcv_reg[2] = CVMX_PEXP_NPEI_MSI_RCV2; + msi_rcv_reg[3] = CVMX_PEXP_NPEI_MSI_RCV3; + mis_ena_reg[0] = CVMX_PEXP_NPEI_MSI_ENB0; + mis_ena_reg[1] = CVMX_PEXP_NPEI_MSI_ENB1; + mis_ena_reg[2] = CVMX_PEXP_NPEI_MSI_ENB2; + mis_ena_reg[3] = CVMX_PEXP_NPEI_MSI_ENB3; + msi = &octeon_irq_chip_msi_pcie; + } else { + msi_rcv_reg[0] = CVMX_NPI_NPI_MSI_RCV; +#define INVALID_GENERATE_ADE 0x8700000000000000ULL; + msi_rcv_reg[1] = INVALID_GENERATE_ADE; + msi_rcv_reg[2] = INVALID_GENERATE_ADE; + msi_rcv_reg[3] = INVALID_GENERATE_ADE; + mis_ena_reg[0] = INVALID_GENERATE_ADE; + mis_ena_reg[1] = INVALID_GENERATE_ADE; + mis_ena_reg[2] = INVALID_GENERATE_ADE; + mis_ena_reg[3] = INVALID_GENERATE_ADE; + msi = &octeon_irq_chip_msi_pci; + } + + for (irq = OCTEON_IRQ_MSI_BIT0; irq <= OCTEON_IRQ_MSI_LAST; irq++) + irq_set_chip_and_handler(irq, msi, handle_simple_irq); + + if (octeon_has_feature(OCTEON_FEATURE_PCIE)) { + if (request_irq(OCTEON_IRQ_PCI_MSI0, octeon_msi_interrupt0, + 0, "MSI[0:63]", octeon_msi_interrupt0)) + panic("request_irq(OCTEON_IRQ_PCI_MSI0) failed"); + + if (request_irq(OCTEON_IRQ_PCI_MSI1, octeon_msi_interrupt1, + 0, "MSI[64:127]", octeon_msi_interrupt1)) + panic("request_irq(OCTEON_IRQ_PCI_MSI1) failed"); + + if (request_irq(OCTEON_IRQ_PCI_MSI2, octeon_msi_interrupt2, + 0, "MSI[127:191]", octeon_msi_interrupt2)) + panic("request_irq(OCTEON_IRQ_PCI_MSI2) failed"); + + if (request_irq(OCTEON_IRQ_PCI_MSI3, octeon_msi_interrupt3, + 0, "MSI[192:255]", octeon_msi_interrupt3)) + panic("request_irq(OCTEON_IRQ_PCI_MSI3) failed"); + + msi_irq_size = 256; + } else if (octeon_is_pci_host()) { + if (request_irq(OCTEON_IRQ_PCI_MSI0, octeon_msi_interrupt0, + 0, "MSI[0:15]", octeon_msi_interrupt0)) + panic("request_irq(OCTEON_IRQ_PCI_MSI0) failed"); + + if (request_irq(OCTEON_IRQ_PCI_MSI1, octeon_msi_interrupt0, + 0, "MSI[16:31]", octeon_msi_interrupt0)) + panic("request_irq(OCTEON_IRQ_PCI_MSI1) failed"); + + if (request_irq(OCTEON_IRQ_PCI_MSI2, octeon_msi_interrupt0, + 0, "MSI[32:47]", octeon_msi_interrupt0)) + panic("request_irq(OCTEON_IRQ_PCI_MSI2) failed"); + + if (request_irq(OCTEON_IRQ_PCI_MSI3, octeon_msi_interrupt0, + 0, "MSI[48:63]", octeon_msi_interrupt0)) + panic("request_irq(OCTEON_IRQ_PCI_MSI3) failed"); + msi_irq_size = 64; + } + return 0; +} +subsys_initcall(octeon_msi_initialize); diff --git a/arch/mips/pci/msi-xlp.c b/arch/mips/pci/msi-xlp.c new file mode 100644 index 00000000000..fa374fe3746 --- /dev/null +++ b/arch/mips/pci/msi-xlp.c @@ -0,0 +1,572 @@ +/* + * Copyright (c) 2003-2012 Broadcom Corporation + * All Rights Reserved + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the Broadcom + * license below: + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/msi.h> +#include <linux/mm.h> +#include <linux/irq.h> +#include <linux/irqdesc.h> +#include <linux/console.h> + +#include <asm/io.h> + +#include <asm/netlogic/interrupt.h> +#include <asm/netlogic/haldefs.h> +#include <asm/netlogic/common.h> +#include <asm/netlogic/mips-extns.h> + +#include <asm/netlogic/xlp-hal/iomap.h> +#include <asm/netlogic/xlp-hal/xlp.h> +#include <asm/netlogic/xlp-hal/pic.h> +#include <asm/netlogic/xlp-hal/pcibus.h> +#include <asm/netlogic/xlp-hal/bridge.h> + +#define XLP_MSIVEC_PER_LINK 32 +#define XLP_MSIXVEC_TOTAL (cpu_is_xlp9xx() ? 128 : 32) +#define XLP_MSIXVEC_PER_LINK (cpu_is_xlp9xx() ? 32 : 8) + +/* 128 MSI irqs per node, mapped starting at NLM_MSI_VEC_BASE */ +static inline int nlm_link_msiirq(int link, int msivec) +{ + return NLM_MSI_VEC_BASE + link * XLP_MSIVEC_PER_LINK + msivec; +} + +/* get the link MSI vector from irq number */ +static inline int nlm_irq_msivec(int irq) +{ + return (irq - NLM_MSI_VEC_BASE) % XLP_MSIVEC_PER_LINK; +} + +/* get the link from the irq number */ +static inline int nlm_irq_msilink(int irq) +{ + int total_msivec = XLP_MSIVEC_PER_LINK * PCIE_NLINKS; + + return ((irq - NLM_MSI_VEC_BASE) % total_msivec) / + XLP_MSIVEC_PER_LINK; +} + +/* + * For XLP 8xx/4xx/3xx/2xx, only 32 MSI-X vectors are possible because + * there are only 32 PIC interrupts for MSI. We split them statically + * and use 8 MSI-X vectors per link - this keeps the allocation and + * lookup simple. + * On XLP 9xx, there are 32 vectors per link, and the interrupts are + * not routed thru PIC, so we can use all 128 MSI-X vectors. + */ +static inline int nlm_link_msixirq(int link, int bit) +{ + return NLM_MSIX_VEC_BASE + link * XLP_MSIXVEC_PER_LINK + bit; +} + +/* get the link MSI vector from irq number */ +static inline int nlm_irq_msixvec(int irq) +{ + return (irq - NLM_MSIX_VEC_BASE) % XLP_MSIXVEC_TOTAL; +} + +/* get the link from MSIX vec */ +static inline int nlm_irq_msixlink(int msixvec) +{ + return msixvec / XLP_MSIXVEC_PER_LINK; +} + +/* + * Per link MSI and MSI-X information, set as IRQ handler data for + * MSI and MSI-X interrupts. + */ +struct xlp_msi_data { + struct nlm_soc_info *node; + uint64_t lnkbase; + uint32_t msi_enabled_mask; + uint32_t msi_alloc_mask; + uint32_t msix_alloc_mask; + spinlock_t msi_lock; +}; + +/* + * MSI Chip definitions + * + * On XLP, there is a PIC interrupt associated with each PCIe link on the + * chip (which appears as a PCI bridge to us). This gives us 32 MSI irqa + * per link and 128 overall. + * + * When a device connected to the link raises a MSI interrupt, we get a + * link interrupt and we then have to look at PCIE_MSI_STATUS register at + * the bridge to map it to the IRQ + */ +static void xlp_msi_enable(struct irq_data *d) +{ + struct xlp_msi_data *md = irq_data_get_irq_handler_data(d); + unsigned long flags; + int vec; + + vec = nlm_irq_msivec(d->irq); + spin_lock_irqsave(&md->msi_lock, flags); + md->msi_enabled_mask |= 1u << vec; + if (cpu_is_xlp9xx()) + nlm_write_reg(md->lnkbase, PCIE_9XX_MSI_EN, + md->msi_enabled_mask); + else + nlm_write_reg(md->lnkbase, PCIE_MSI_EN, md->msi_enabled_mask); + spin_unlock_irqrestore(&md->msi_lock, flags); +} + +static void xlp_msi_disable(struct irq_data *d) +{ + struct xlp_msi_data *md = irq_data_get_irq_handler_data(d); + unsigned long flags; + int vec; + + vec = nlm_irq_msivec(d->irq); + spin_lock_irqsave(&md->msi_lock, flags); + md->msi_enabled_mask &= ~(1u << vec); + if (cpu_is_xlp9xx()) + nlm_write_reg(md->lnkbase, PCIE_9XX_MSI_EN, + md->msi_enabled_mask); + else + nlm_write_reg(md->lnkbase, PCIE_MSI_EN, md->msi_enabled_mask); + spin_unlock_irqrestore(&md->msi_lock, flags); +} + +static void xlp_msi_mask_ack(struct irq_data *d) +{ + struct xlp_msi_data *md = irq_data_get_irq_handler_data(d); + int link, vec; + + link = nlm_irq_msilink(d->irq); + vec = nlm_irq_msivec(d->irq); + xlp_msi_disable(d); + + /* Ack MSI on bridge */ + if (cpu_is_xlp9xx()) + nlm_write_reg(md->lnkbase, PCIE_9XX_MSI_STATUS, 1u << vec); + else + nlm_write_reg(md->lnkbase, PCIE_MSI_STATUS, 1u << vec); + + /* Ack at eirr and PIC */ + ack_c0_eirr(PIC_PCIE_LINK_MSI_IRQ(link)); + if (cpu_is_xlp9xx()) + nlm_pic_ack(md->node->picbase, + PIC_9XX_IRT_PCIE_LINK_INDEX(link)); + else + nlm_pic_ack(md->node->picbase, PIC_IRT_PCIE_LINK_INDEX(link)); +} + +static struct irq_chip xlp_msi_chip = { + .name = "XLP-MSI", + .irq_enable = xlp_msi_enable, + .irq_disable = xlp_msi_disable, + .irq_mask_ack = xlp_msi_mask_ack, + .irq_unmask = xlp_msi_enable, +}; + +/* + * XLP8XX/4XX/3XX/2XX: + * The MSI-X interrupt handling is different from MSI, there are 32 MSI-X + * interrupts generated by the PIC and each of these correspond to a MSI-X + * vector (0-31) that can be assigned. + * + * We divide the MSI-X vectors to 8 per link and do a per-link allocation + * + * XLP9XX: + * 32 MSI-X vectors are available per link, and the interrupts are not routed + * thru the PIC. PIC ack not needed. + * + * Enable and disable done using standard MSI functions. + */ +static void xlp_msix_mask_ack(struct irq_data *d) +{ + struct xlp_msi_data *md; + int link, msixvec; + uint32_t status_reg, bit; + + msixvec = nlm_irq_msixvec(d->irq); + link = nlm_irq_msixlink(msixvec); + mask_msi_irq(d); + md = irq_data_get_irq_handler_data(d); + + /* Ack MSI on bridge */ + if (cpu_is_xlp9xx()) { + status_reg = PCIE_9XX_MSIX_STATUSX(link); + bit = msixvec % XLP_MSIXVEC_PER_LINK; + } else { + status_reg = PCIE_MSIX_STATUS; + bit = msixvec; + } + nlm_write_reg(md->lnkbase, status_reg, 1u << bit); + + /* Ack at eirr and PIC */ + ack_c0_eirr(PIC_PCIE_MSIX_IRQ(link)); + if (!cpu_is_xlp9xx()) + nlm_pic_ack(md->node->picbase, + PIC_IRT_PCIE_MSIX_INDEX(msixvec)); +} + +static struct irq_chip xlp_msix_chip = { + .name = "XLP-MSIX", + .irq_enable = unmask_msi_irq, + .irq_disable = mask_msi_irq, + .irq_mask_ack = xlp_msix_mask_ack, + .irq_unmask = unmask_msi_irq, +}; + +void arch_teardown_msi_irq(unsigned int irq) +{ +} + +/* + * Setup a PCIe link for MSI. By default, the links are in + * legacy interrupt mode. We will switch them to MSI mode + * at the first MSI request. + */ +static void xlp_config_link_msi(uint64_t lnkbase, int lirq, uint64_t msiaddr) +{ + u32 val; + + if (cpu_is_xlp9xx()) { + val = nlm_read_reg(lnkbase, PCIE_9XX_INT_EN0); + if ((val & 0x200) == 0) { + val |= 0x200; /* MSI Interrupt enable */ + nlm_write_reg(lnkbase, PCIE_9XX_INT_EN0, val); + } + } else { + val = nlm_read_reg(lnkbase, PCIE_INT_EN0); + if ((val & 0x200) == 0) { + val |= 0x200; + nlm_write_reg(lnkbase, PCIE_INT_EN0, val); + } + } + + val = nlm_read_reg(lnkbase, 0x1); /* CMD */ + if ((val & 0x0400) == 0) { + val |= 0x0400; + nlm_write_reg(lnkbase, 0x1, val); + } + + /* Update IRQ in the PCI irq reg */ + val = nlm_read_pci_reg(lnkbase, 0xf); + val &= ~0x1fu; + val |= (1 << 8) | lirq; + nlm_write_pci_reg(lnkbase, 0xf, val); + + /* MSI addr */ + nlm_write_reg(lnkbase, PCIE_BRIDGE_MSI_ADDRH, msiaddr >> 32); + nlm_write_reg(lnkbase, PCIE_BRIDGE_MSI_ADDRL, msiaddr & 0xffffffff); + + /* MSI cap for bridge */ + val = nlm_read_reg(lnkbase, PCIE_BRIDGE_MSI_CAP); + if ((val & (1 << 16)) == 0) { + val |= 0xb << 16; /* mmc32, msi enable */ + nlm_write_reg(lnkbase, PCIE_BRIDGE_MSI_CAP, val); + } +} + +/* + * Allocate a MSI vector on a link + */ +static int xlp_setup_msi(uint64_t lnkbase, int node, int link, + struct msi_desc *desc) +{ + struct xlp_msi_data *md; + struct msi_msg msg; + unsigned long flags; + int msivec, irt, lirq, xirq, ret; + uint64_t msiaddr; + + /* Get MSI data for the link */ + lirq = PIC_PCIE_LINK_MSI_IRQ(link); + xirq = nlm_irq_to_xirq(node, nlm_link_msiirq(link, 0)); + md = irq_get_handler_data(xirq); + msiaddr = MSI_LINK_ADDR(node, link); + + spin_lock_irqsave(&md->msi_lock, flags); + if (md->msi_alloc_mask == 0) { + xlp_config_link_msi(lnkbase, lirq, msiaddr); + /* switch the link IRQ to MSI range */ + if (cpu_is_xlp9xx()) + irt = PIC_9XX_IRT_PCIE_LINK_INDEX(link); + else + irt = PIC_IRT_PCIE_LINK_INDEX(link); + nlm_setup_pic_irq(node, lirq, lirq, irt); + nlm_pic_init_irt(nlm_get_node(node)->picbase, irt, lirq, + node * nlm_threads_per_node(), 1 /*en */); + } + + /* allocate a MSI vec, and tell the bridge about it */ + msivec = fls(md->msi_alloc_mask); + if (msivec == XLP_MSIVEC_PER_LINK) { + spin_unlock_irqrestore(&md->msi_lock, flags); + return -ENOMEM; + } + md->msi_alloc_mask |= (1u << msivec); + spin_unlock_irqrestore(&md->msi_lock, flags); + + msg.address_hi = msiaddr >> 32; + msg.address_lo = msiaddr & 0xffffffff; + msg.data = 0xc00 | msivec; + + xirq = xirq + msivec; /* msi mapped to global irq space */ + ret = irq_set_msi_desc(xirq, desc); + if (ret < 0) + return ret; + + write_msi_msg(xirq, &msg); + return 0; +} + +/* + * Switch a link to MSI-X mode + */ +static void xlp_config_link_msix(uint64_t lnkbase, int lirq, uint64_t msixaddr) +{ + u32 val; + + val = nlm_read_reg(lnkbase, 0x2C); + if ((val & 0x80000000U) == 0) { + val |= 0x80000000U; + nlm_write_reg(lnkbase, 0x2C, val); + } + + if (cpu_is_xlp9xx()) { + val = nlm_read_reg(lnkbase, PCIE_9XX_INT_EN0); + if ((val & 0x200) == 0) { + val |= 0x200; /* MSI Interrupt enable */ + nlm_write_reg(lnkbase, PCIE_9XX_INT_EN0, val); + } + } else { + val = nlm_read_reg(lnkbase, PCIE_INT_EN0); + if ((val & 0x200) == 0) { + val |= 0x200; /* MSI Interrupt enable */ + nlm_write_reg(lnkbase, PCIE_INT_EN0, val); + } + } + + val = nlm_read_reg(lnkbase, 0x1); /* CMD */ + if ((val & 0x0400) == 0) { + val |= 0x0400; + nlm_write_reg(lnkbase, 0x1, val); + } + + /* Update IRQ in the PCI irq reg */ + val = nlm_read_pci_reg(lnkbase, 0xf); + val &= ~0x1fu; + val |= (1 << 8) | lirq; + nlm_write_pci_reg(lnkbase, 0xf, val); + + if (cpu_is_xlp9xx()) { + /* MSI-X addresses */ + nlm_write_reg(lnkbase, PCIE_9XX_BRIDGE_MSIX_ADDR_BASE, + msixaddr >> 8); + nlm_write_reg(lnkbase, PCIE_9XX_BRIDGE_MSIX_ADDR_LIMIT, + (msixaddr + MSI_ADDR_SZ) >> 8); + } else { + /* MSI-X addresses */ + nlm_write_reg(lnkbase, PCIE_BRIDGE_MSIX_ADDR_BASE, + msixaddr >> 8); + nlm_write_reg(lnkbase, PCIE_BRIDGE_MSIX_ADDR_LIMIT, + (msixaddr + MSI_ADDR_SZ) >> 8); + } +} + +/* + * Allocate a MSI-X vector + */ +static int xlp_setup_msix(uint64_t lnkbase, int node, int link, + struct msi_desc *desc) +{ + struct xlp_msi_data *md; + struct msi_msg msg; + unsigned long flags; + int t, msixvec, lirq, xirq, ret; + uint64_t msixaddr; + + /* Get MSI data for the link */ + lirq = PIC_PCIE_MSIX_IRQ(link); + xirq = nlm_irq_to_xirq(node, nlm_link_msixirq(link, 0)); + md = irq_get_handler_data(xirq); + msixaddr = MSIX_LINK_ADDR(node, link); + + spin_lock_irqsave(&md->msi_lock, flags); + /* switch the PCIe link to MSI-X mode at the first alloc */ + if (md->msix_alloc_mask == 0) + xlp_config_link_msix(lnkbase, lirq, msixaddr); + + /* allocate a MSI-X vec, and tell the bridge about it */ + t = fls(md->msix_alloc_mask); + if (t == XLP_MSIXVEC_PER_LINK) { + spin_unlock_irqrestore(&md->msi_lock, flags); + return -ENOMEM; + } + md->msix_alloc_mask |= (1u << t); + spin_unlock_irqrestore(&md->msi_lock, flags); + + xirq += t; + msixvec = nlm_irq_msixvec(xirq); + + msg.address_hi = msixaddr >> 32; + msg.address_lo = msixaddr & 0xffffffff; + msg.data = 0xc00 | msixvec; + + ret = irq_set_msi_desc(xirq, desc); + if (ret < 0) { + destroy_irq(xirq); + return ret; + } + + write_msi_msg(xirq, &msg); + return 0; +} + +int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc) +{ + struct pci_dev *lnkdev; + uint64_t lnkbase; + int node, link, slot; + + lnkdev = xlp_get_pcie_link(dev); + if (lnkdev == NULL) { + dev_err(&dev->dev, "Could not find bridge\n"); + return 1; + } + slot = PCI_SLOT(lnkdev->devfn); + link = PCI_FUNC(lnkdev->devfn); + node = slot / 8; + lnkbase = nlm_get_pcie_base(node, link); + + if (desc->msi_attrib.is_msix) + return xlp_setup_msix(lnkbase, node, link, desc); + else + return xlp_setup_msi(lnkbase, node, link, desc); +} + +void __init xlp_init_node_msi_irqs(int node, int link) +{ + struct nlm_soc_info *nodep; + struct xlp_msi_data *md; + int irq, i, irt, msixvec, val; + + pr_info("[%d %d] Init node PCI IRT\n", node, link); + nodep = nlm_get_node(node); + + /* Alloc an MSI block for the link */ + md = kzalloc(sizeof(*md), GFP_KERNEL); + spin_lock_init(&md->msi_lock); + md->msi_enabled_mask = 0; + md->msi_alloc_mask = 0; + md->msix_alloc_mask = 0; + md->node = nodep; + md->lnkbase = nlm_get_pcie_base(node, link); + + /* extended space for MSI interrupts */ + irq = nlm_irq_to_xirq(node, nlm_link_msiirq(link, 0)); + for (i = irq; i < irq + XLP_MSIVEC_PER_LINK; i++) { + irq_set_chip_and_handler(i, &xlp_msi_chip, handle_level_irq); + irq_set_handler_data(i, md); + } + + for (i = 0; i < XLP_MSIXVEC_PER_LINK ; i++) { + if (cpu_is_xlp9xx()) { + val = ((node * nlm_threads_per_node()) << 7 | + PIC_PCIE_MSIX_IRQ(link) << 1 | 0 << 0); + nlm_write_pcie_reg(md->lnkbase, PCIE_9XX_MSIX_VECX(i + + (link * XLP_MSIXVEC_PER_LINK)), val); + } else { + /* Initialize MSI-X irts to generate one interrupt + * per link + */ + msixvec = link * XLP_MSIXVEC_PER_LINK + i; + irt = PIC_IRT_PCIE_MSIX_INDEX(msixvec); + nlm_pic_init_irt(nodep->picbase, irt, + PIC_PCIE_MSIX_IRQ(link), + node * nlm_threads_per_node(), 1); + } + + /* Initialize MSI-X extended irq space for the link */ + irq = nlm_irq_to_xirq(node, nlm_link_msixirq(link, i)); + irq_set_chip_and_handler(irq, &xlp_msix_chip, handle_level_irq); + irq_set_handler_data(irq, md); + } +} + +void nlm_dispatch_msi(int node, int lirq) +{ + struct xlp_msi_data *md; + int link, i, irqbase; + u32 status; + + link = lirq - PIC_PCIE_LINK_MSI_IRQ_BASE; + irqbase = nlm_irq_to_xirq(node, nlm_link_msiirq(link, 0)); + md = irq_get_handler_data(irqbase); + if (cpu_is_xlp9xx()) + status = nlm_read_reg(md->lnkbase, PCIE_9XX_MSI_STATUS) & + md->msi_enabled_mask; + else + status = nlm_read_reg(md->lnkbase, PCIE_MSI_STATUS) & + md->msi_enabled_mask; + while (status) { + i = __ffs(status); + do_IRQ(irqbase + i); + status &= status - 1; + } +} + +void nlm_dispatch_msix(int node, int lirq) +{ + struct xlp_msi_data *md; + int link, i, irqbase; + u32 status; + + link = lirq - PIC_PCIE_MSIX_IRQ_BASE; + irqbase = nlm_irq_to_xirq(node, nlm_link_msixirq(link, 0)); + md = irq_get_handler_data(irqbase); + if (cpu_is_xlp9xx()) + status = nlm_read_reg(md->lnkbase, PCIE_9XX_MSIX_STATUSX(link)); + else + status = nlm_read_reg(md->lnkbase, PCIE_MSIX_STATUS); + + /* narrow it down to the MSI-x vectors for our link */ + if (!cpu_is_xlp9xx()) + status = (status >> (link * XLP_MSIXVEC_PER_LINK)) & + ((1 << XLP_MSIXVEC_PER_LINK) - 1); + + while (status) { + i = __ffs(status); + do_IRQ(irqbase + i); + status &= status - 1; + } +} diff --git a/arch/mips/pci/ops-au1000.c b/arch/mips/pci/ops-au1000.c deleted file mode 100644 index be1420126c4..00000000000 --- a/arch/mips/pci/ops-au1000.c +++ /dev/null @@ -1,315 +0,0 @@ -/* - * BRIEF MODULE DESCRIPTION - * Alchemy/AMD Au1x00 pci support. - * - * Copyright 2001,2002,2003 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ppopov@mvista.com or source@mvista.com - * - * Support for all devices (greater than 16) added by David Gathright. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/config.h> -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/vmalloc.h> - -#include <asm/mach-au1x00/au1000.h> - -#undef DEBUG -#ifdef DEBUG -#define DBG(x...) printk(x) -#else -#define DBG(x...) -#endif - -#define PCI_ACCESS_READ 0 -#define PCI_ACCESS_WRITE 1 - - -int (*board_pci_idsel)(unsigned int devsel, int assert); - -void mod_wired_entry(int entry, unsigned long entrylo0, - unsigned long entrylo1, unsigned long entryhi, - unsigned long pagemask) -{ - unsigned long old_pagemask; - unsigned long old_ctx; - - /* Save old context and create impossible VPN2 value */ - old_ctx = read_c0_entryhi() & 0xff; - old_pagemask = read_c0_pagemask(); - write_c0_index(entry); - write_c0_pagemask(pagemask); - write_c0_entryhi(entryhi); - write_c0_entrylo0(entrylo0); - write_c0_entrylo1(entrylo1); - tlb_write_indexed(); - write_c0_entryhi(old_ctx); - write_c0_pagemask(old_pagemask); -} - -struct vm_struct *pci_cfg_vm; -static int pci_cfg_wired_entry; -static int first_cfg = 1; -unsigned long last_entryLo0, last_entryLo1; - -static int config_access(unsigned char access_type, struct pci_bus *bus, - unsigned int dev_fn, unsigned char where, - u32 * data) -{ -#if defined( CONFIG_SOC_AU1500 ) || defined( CONFIG_SOC_AU1550 ) - unsigned int device = PCI_SLOT(dev_fn); - unsigned int function = PCI_FUNC(dev_fn); - unsigned long offset, status; - unsigned long cfg_base; - unsigned long flags; - int error = PCIBIOS_SUCCESSFUL; - unsigned long entryLo0, entryLo1; - - if (device > 19) { - *data = 0xffffffff; - return -1; - } - - local_irq_save(flags); - au_writel(((0x2000 << 16) | (au_readl(Au1500_PCI_STATCMD) & 0xffff)), - Au1500_PCI_STATCMD); - au_sync_udelay(1); - - /* - * We can't ioremap the entire pci config space because it's - * too large. Nor can we call ioremap dynamically because some - * device drivers use the pci config routines from within - * interrupt handlers and that becomes a problem in get_vm_area(). - * We use one wired tlb to handle all config accesses for all - * busses. To improve performance, if the current device - * is the same as the last device accessed, we don't touch the - * tlb. - */ - if (first_cfg) { - /* reserve a wired entry for pci config accesses */ - first_cfg = 0; - pci_cfg_vm = get_vm_area(0x2000, 0); - if (!pci_cfg_vm) - panic (KERN_ERR "PCI unable to get vm area\n"); - pci_cfg_wired_entry = read_c0_wired(); - add_wired_entry(0, 0, (unsigned long)pci_cfg_vm->addr, PM_4K); - last_entryLo0 = last_entryLo1 = 0xffffffff; - } - - /* Allow board vendors to implement their own off-chip idsel. - * If it doesn't succeed, may as well bail out at this point. - */ - if (board_pci_idsel) { - if (board_pci_idsel(device, 1) == 0) { - *data = 0xffffffff; - local_irq_restore(flags); - return -1; - } - } - - /* setup the config window */ - if (bus->number == 0) { - cfg_base = ((1<<device)<<11); - } else { - cfg_base = 0x80000000 | (bus->number<<16) | (device<<11); - } - - /* setup the lower bits of the 36 bit address */ - offset = (function << 8) | (where & ~0x3); - /* pick up any address that falls below the page mask */ - offset |= cfg_base & ~PAGE_MASK; - - /* page boundary */ - cfg_base = cfg_base & PAGE_MASK; - - entryLo0 = (6 << 26) | (cfg_base >> 6) | (2 << 3) | 7; - entryLo1 = (6 << 26) | (cfg_base >> 6) | (0x1000 >> 6) | (2 << 3) | 7; - - if ((entryLo0 != last_entryLo0) || (entryLo1 != last_entryLo1)) { - mod_wired_entry(pci_cfg_wired_entry, entryLo0, entryLo1, - (unsigned long)pci_cfg_vm->addr, PM_4K); - last_entryLo0 = entryLo0; - last_entryLo1 = entryLo1; - } - - if (access_type == PCI_ACCESS_WRITE) { - au_writel(*data, (int)(pci_cfg_vm->addr + offset)); - } else { - *data = au_readl((int)(pci_cfg_vm->addr + offset)); - } - au_sync_udelay(2); - - DBG("cfg_access %d bus->number %d dev %d at %x *data %x conf %x\n", - access_type, bus->number, device, where, *data, offset); - - /* check master abort */ - status = au_readl(Au1500_PCI_STATCMD); - - if (status & (1<<29)) { - *data = 0xffffffff; - error = -1; - DBG("Au1x Master Abort\n"); - } else if ((status >> 28) & 0xf) { - DBG("PCI ERR detected: status %x\n", status); - *data = 0xffffffff; - error = -1; - } - - /* Take away the idsel. - */ - if (board_pci_idsel) { - (void)board_pci_idsel(device, 0); - } - - local_irq_restore(flags); - return error; -#endif -} - -static int read_config_byte(struct pci_bus *bus, unsigned int devfn, - int where, u8 * val) -{ - u32 data; - int ret; - - ret = config_access(PCI_ACCESS_READ, bus, devfn, where, &data); - if (where & 1) - data >>= 8; - if (where & 2) - data >>= 16; - *val = data & 0xff; - return ret; -} - - -static int read_config_word(struct pci_bus *bus, unsigned int devfn, - int where, u16 * val) -{ - u32 data; - int ret; - - ret = config_access(PCI_ACCESS_READ, bus, devfn, where, &data); - if (where & 2) - data >>= 16; - *val = data & 0xffff; - return ret; -} - -static int read_config_dword(struct pci_bus *bus, unsigned int devfn, - int where, u32 * val) -{ - int ret; - - ret = config_access(PCI_ACCESS_READ, bus, devfn, where, val); - return ret; -} - -static int -write_config_byte(struct pci_bus *bus, unsigned int devfn, int where, - u8 val) -{ - u32 data = 0; - - if (config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) - return -1; - - data = (data & ~(0xff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - - if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data)) - return -1; - - return PCIBIOS_SUCCESSFUL; -} - -static int -write_config_word(struct pci_bus *bus, unsigned int devfn, int where, - u16 val) -{ - u32 data = 0; - - if (config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) - return -1; - - data = (data & ~(0xffff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - - if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data)) - return -1; - - - return PCIBIOS_SUCCESSFUL; -} - -static int -write_config_dword(struct pci_bus *bus, unsigned int devfn, int where, - u32 val) -{ - if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &val)) - return -1; - - return PCIBIOS_SUCCESSFUL; -} - -static int config_read(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * val) -{ - switch (size) { - case 1: { - u8 _val; - int rc = read_config_byte(bus, devfn, where, &_val); - *val = _val; - return rc; - } - case 2: { - u16 _val; - int rc = read_config_word(bus, devfn, where, &_val); - *val = _val; - return rc; - } - default: - return read_config_dword(bus, devfn, where, val); - } -} - -static int config_write(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - switch (size) { - case 1: - return write_config_byte(bus, devfn, where, (u8) val); - case 2: - return write_config_word(bus, devfn, where, (u16) val); - default: - return write_config_dword(bus, devfn, where, val); - } -} - - -struct pci_ops au1x_pci_ops = { - config_read, - config_write -}; diff --git a/arch/mips/pci/ops-bcm63xx.c b/arch/mips/pci/ops-bcm63xx.c new file mode 100644 index 00000000000..13eea696bbe --- /dev/null +++ b/arch/mips/pci/ops-bcm63xx.c @@ -0,0 +1,527 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> + */ + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/io.h> + +#include "pci-bcm63xx.h" + +/* + * swizzle 32bits data to return only the needed part + */ +static int postprocess_read(u32 data, int where, unsigned int size) +{ + u32 ret; + + ret = 0; + switch (size) { + case 1: + ret = (data >> ((where & 3) << 3)) & 0xff; + break; + case 2: + ret = (data >> ((where & 3) << 3)) & 0xffff; + break; + case 4: + ret = data; + break; + } + return ret; +} + +static int preprocess_write(u32 orig_data, u32 val, int where, + unsigned int size) +{ + u32 ret; + + ret = 0; + switch (size) { + case 1: + ret = (orig_data & ~(0xff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + break; + case 2: + ret = (orig_data & ~(0xffff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + break; + case 4: + ret = val; + break; + } + return ret; +} + +/* + * setup hardware for a configuration cycle with given parameters + */ +static int bcm63xx_setup_cfg_access(int type, unsigned int busn, + unsigned int devfn, int where) +{ + unsigned int slot, func, reg; + u32 val; + + slot = PCI_SLOT(devfn); + func = PCI_FUNC(devfn); + reg = where >> 2; + + /* sanity check */ + if (slot > (MPI_L2PCFG_DEVNUM_MASK >> MPI_L2PCFG_DEVNUM_SHIFT)) + return 1; + + if (func > (MPI_L2PCFG_FUNC_MASK >> MPI_L2PCFG_FUNC_SHIFT)) + return 1; + + if (reg > (MPI_L2PCFG_REG_MASK >> MPI_L2PCFG_REG_SHIFT)) + return 1; + + /* ok, setup config access */ + val = (reg << MPI_L2PCFG_REG_SHIFT); + val |= (func << MPI_L2PCFG_FUNC_SHIFT); + val |= (slot << MPI_L2PCFG_DEVNUM_SHIFT); + val |= MPI_L2PCFG_CFG_USEREG_MASK; + val |= MPI_L2PCFG_CFG_SEL_MASK; + /* type 0 cycle for local bus, type 1 cycle for anything else */ + if (type != 0) { + /* FIXME: how to specify bus ??? */ + val |= (1 << MPI_L2PCFG_CFG_TYPE_SHIFT); + } + bcm_mpi_writel(val, MPI_L2PCFG_REG); + + return 0; +} + +static int bcm63xx_do_cfg_read(int type, unsigned int busn, + unsigned int devfn, int where, int size, + u32 *val) +{ + u32 data; + + /* two phase cycle, first we write address, then read data at + * another location, caller already has a spinlock so no need + * to add one here */ + if (bcm63xx_setup_cfg_access(type, busn, devfn, where)) + return PCIBIOS_DEVICE_NOT_FOUND; + iob(); + data = le32_to_cpu(__raw_readl(pci_iospace_start)); + /* restore IO space normal behaviour */ + bcm_mpi_writel(0, MPI_L2PCFG_REG); + + *val = postprocess_read(data, where, size); + + return PCIBIOS_SUCCESSFUL; +} + +static int bcm63xx_do_cfg_write(int type, unsigned int busn, + unsigned int devfn, int where, int size, + u32 val) +{ + u32 data; + + /* two phase cycle, first we write address, then write data to + * another location, caller already has a spinlock so no need + * to add one here */ + if (bcm63xx_setup_cfg_access(type, busn, devfn, where)) + return PCIBIOS_DEVICE_NOT_FOUND; + iob(); + + data = le32_to_cpu(__raw_readl(pci_iospace_start)); + data = preprocess_write(data, val, where, size); + + __raw_writel(cpu_to_le32(data), pci_iospace_start); + wmb(); + /* no way to know the access is done, we have to wait */ + udelay(500); + /* restore IO space normal behaviour */ + bcm_mpi_writel(0, MPI_L2PCFG_REG); + + return PCIBIOS_SUCCESSFUL; +} + +static int bcm63xx_pci_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + int type; + + type = bus->parent ? 1 : 0; + + if (type == 0 && PCI_SLOT(devfn) == CARDBUS_PCI_IDSEL) + return PCIBIOS_DEVICE_NOT_FOUND; + + return bcm63xx_do_cfg_read(type, bus->number, devfn, + where, size, val); +} + +static int bcm63xx_pci_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + int type; + + type = bus->parent ? 1 : 0; + + if (type == 0 && PCI_SLOT(devfn) == CARDBUS_PCI_IDSEL) + return PCIBIOS_DEVICE_NOT_FOUND; + + return bcm63xx_do_cfg_write(type, bus->number, devfn, + where, size, val); +} + +struct pci_ops bcm63xx_pci_ops = { + .read = bcm63xx_pci_read, + .write = bcm63xx_pci_write +}; + +#ifdef CONFIG_CARDBUS +/* + * emulate configuration read access on a cardbus bridge + */ +#define FAKE_CB_BRIDGE_SLOT 0x1e + +static int fake_cb_bridge_bus_number = -1; + +static struct { + u16 pci_command; + u8 cb_latency; + u8 subordinate_busn; + u8 cardbus_busn; + u8 pci_busn; + int bus_assigned; + u16 bridge_control; + + u32 mem_base0; + u32 mem_limit0; + u32 mem_base1; + u32 mem_limit1; + + u32 io_base0; + u32 io_limit0; + u32 io_base1; + u32 io_limit1; +} fake_cb_bridge_regs; + +static int fake_cb_bridge_read(int where, int size, u32 *val) +{ + unsigned int reg; + u32 data; + + data = 0; + reg = where >> 2; + switch (reg) { + case (PCI_VENDOR_ID >> 2): + case (PCI_CB_SUBSYSTEM_VENDOR_ID >> 2): + /* create dummy vendor/device id from our cpu id */ + data = (bcm63xx_get_cpu_id() << 16) | PCI_VENDOR_ID_BROADCOM; + break; + + case (PCI_COMMAND >> 2): + data = (PCI_STATUS_DEVSEL_SLOW << 16); + data |= fake_cb_bridge_regs.pci_command; + break; + + case (PCI_CLASS_REVISION >> 2): + data = (PCI_CLASS_BRIDGE_CARDBUS << 16); + break; + + case (PCI_CACHE_LINE_SIZE >> 2): + data = (PCI_HEADER_TYPE_CARDBUS << 16); + break; + + case (PCI_INTERRUPT_LINE >> 2): + /* bridge control */ + data = (fake_cb_bridge_regs.bridge_control << 16); + /* pin:intA line:0xff */ + data |= (0x1 << 8) | 0xff; + break; + + case (PCI_CB_PRIMARY_BUS >> 2): + data = (fake_cb_bridge_regs.cb_latency << 24); + data |= (fake_cb_bridge_regs.subordinate_busn << 16); + data |= (fake_cb_bridge_regs.cardbus_busn << 8); + data |= fake_cb_bridge_regs.pci_busn; + break; + + case (PCI_CB_MEMORY_BASE_0 >> 2): + data = fake_cb_bridge_regs.mem_base0; + break; + + case (PCI_CB_MEMORY_LIMIT_0 >> 2): + data = fake_cb_bridge_regs.mem_limit0; + break; + + case (PCI_CB_MEMORY_BASE_1 >> 2): + data = fake_cb_bridge_regs.mem_base1; + break; + + case (PCI_CB_MEMORY_LIMIT_1 >> 2): + data = fake_cb_bridge_regs.mem_limit1; + break; + + case (PCI_CB_IO_BASE_0 >> 2): + /* | 1 for 32bits io support */ + data = fake_cb_bridge_regs.io_base0 | 0x1; + break; + + case (PCI_CB_IO_LIMIT_0 >> 2): + data = fake_cb_bridge_regs.io_limit0; + break; + + case (PCI_CB_IO_BASE_1 >> 2): + /* | 1 for 32bits io support */ + data = fake_cb_bridge_regs.io_base1 | 0x1; + break; + + case (PCI_CB_IO_LIMIT_1 >> 2): + data = fake_cb_bridge_regs.io_limit1; + break; + } + + *val = postprocess_read(data, where, size); + return PCIBIOS_SUCCESSFUL; +} + +/* + * emulate configuration write access on a cardbus bridge + */ +static int fake_cb_bridge_write(int where, int size, u32 val) +{ + unsigned int reg; + u32 data, tmp; + int ret; + + ret = fake_cb_bridge_read((where & ~0x3), 4, &data); + if (ret != PCIBIOS_SUCCESSFUL) + return ret; + + data = preprocess_write(data, val, where, size); + + reg = where >> 2; + switch (reg) { + case (PCI_COMMAND >> 2): + fake_cb_bridge_regs.pci_command = (data & 0xffff); + break; + + case (PCI_CB_PRIMARY_BUS >> 2): + fake_cb_bridge_regs.cb_latency = (data >> 24) & 0xff; + fake_cb_bridge_regs.subordinate_busn = (data >> 16) & 0xff; + fake_cb_bridge_regs.cardbus_busn = (data >> 8) & 0xff; + fake_cb_bridge_regs.pci_busn = data & 0xff; + if (fake_cb_bridge_regs.cardbus_busn) + fake_cb_bridge_regs.bus_assigned = 1; + break; + + case (PCI_INTERRUPT_LINE >> 2): + tmp = (data >> 16) & 0xffff; + /* disable memory prefetch support */ + tmp &= ~PCI_CB_BRIDGE_CTL_PREFETCH_MEM0; + tmp &= ~PCI_CB_BRIDGE_CTL_PREFETCH_MEM1; + fake_cb_bridge_regs.bridge_control = tmp; + break; + + case (PCI_CB_MEMORY_BASE_0 >> 2): + fake_cb_bridge_regs.mem_base0 = data; + break; + + case (PCI_CB_MEMORY_LIMIT_0 >> 2): + fake_cb_bridge_regs.mem_limit0 = data; + break; + + case (PCI_CB_MEMORY_BASE_1 >> 2): + fake_cb_bridge_regs.mem_base1 = data; + break; + + case (PCI_CB_MEMORY_LIMIT_1 >> 2): + fake_cb_bridge_regs.mem_limit1 = data; + break; + + case (PCI_CB_IO_BASE_0 >> 2): + fake_cb_bridge_regs.io_base0 = data; + break; + + case (PCI_CB_IO_LIMIT_0 >> 2): + fake_cb_bridge_regs.io_limit0 = data; + break; + + case (PCI_CB_IO_BASE_1 >> 2): + fake_cb_bridge_regs.io_base1 = data; + break; + + case (PCI_CB_IO_LIMIT_1 >> 2): + fake_cb_bridge_regs.io_limit1 = data; + break; + } + + return PCIBIOS_SUCCESSFUL; +} + +static int bcm63xx_cb_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + /* snoop access to slot 0x1e on root bus, we fake a cardbus + * bridge at this location */ + if (!bus->parent && PCI_SLOT(devfn) == FAKE_CB_BRIDGE_SLOT) { + fake_cb_bridge_bus_number = bus->number; + return fake_cb_bridge_read(where, size, val); + } + + /* a configuration cycle for the device behind the cardbus + * bridge is actually done as a type 0 cycle on the primary + * bus. This means that only one device can be on the cardbus + * bus */ + if (fake_cb_bridge_regs.bus_assigned && + bus->number == fake_cb_bridge_regs.cardbus_busn && + PCI_SLOT(devfn) == 0) + return bcm63xx_do_cfg_read(0, 0, + PCI_DEVFN(CARDBUS_PCI_IDSEL, 0), + where, size, val); + + return PCIBIOS_DEVICE_NOT_FOUND; +} + +static int bcm63xx_cb_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + if (!bus->parent && PCI_SLOT(devfn) == FAKE_CB_BRIDGE_SLOT) { + fake_cb_bridge_bus_number = bus->number; + return fake_cb_bridge_write(where, size, val); + } + + if (fake_cb_bridge_regs.bus_assigned && + bus->number == fake_cb_bridge_regs.cardbus_busn && + PCI_SLOT(devfn) == 0) + return bcm63xx_do_cfg_write(0, 0, + PCI_DEVFN(CARDBUS_PCI_IDSEL, 0), + where, size, val); + + return PCIBIOS_DEVICE_NOT_FOUND; +} + +struct pci_ops bcm63xx_cb_ops = { + .read = bcm63xx_cb_read, + .write = bcm63xx_cb_write, +}; + +/* + * only one IO window, so it cannot be shared by PCI and cardbus, use + * fixup to choose and detect unhandled configuration + */ +static void bcm63xx_fixup(struct pci_dev *dev) +{ + static int io_window = -1; + int i, found, new_io_window; + u32 val; + + /* look for any io resource */ + found = 0; + for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) { + if (pci_resource_flags(dev, i) & IORESOURCE_IO) { + found = 1; + break; + } + } + + if (!found) + return; + + /* skip our fake bus with only cardbus bridge on it */ + if (dev->bus->number == fake_cb_bridge_bus_number) + return; + + /* find on which bus the device is */ + if (fake_cb_bridge_regs.bus_assigned && + dev->bus->number == fake_cb_bridge_regs.cardbus_busn && + PCI_SLOT(dev->devfn) == 0) + new_io_window = 1; + else + new_io_window = 0; + + if (new_io_window == io_window) + return; + + if (io_window != -1) { + printk(KERN_ERR "bcm63xx: both PCI and cardbus devices " + "need IO, which hardware cannot do\n"); + return; + } + + printk(KERN_INFO "bcm63xx: PCI IO window assigned to %s\n", + (new_io_window == 0) ? "PCI" : "cardbus"); + + val = bcm_mpi_readl(MPI_L2PIOREMAP_REG); + if (io_window) + val |= MPI_L2PREMAP_IS_CARDBUS_MASK; + else + val &= ~MPI_L2PREMAP_IS_CARDBUS_MASK; + bcm_mpi_writel(val, MPI_L2PIOREMAP_REG); + + io_window = new_io_window; +} + +DECLARE_PCI_FIXUP_ENABLE(PCI_ANY_ID, PCI_ANY_ID, bcm63xx_fixup); +#endif + +static int bcm63xx_pcie_can_access(struct pci_bus *bus, int devfn) +{ + switch (bus->number) { + case PCIE_BUS_BRIDGE: + return (PCI_SLOT(devfn) == 0); + case PCIE_BUS_DEVICE: + if (PCI_SLOT(devfn) == 0) + return bcm_pcie_readl(PCIE_DLSTATUS_REG) + & DLSTATUS_PHYLINKUP; + default: + return false; + } +} + +static int bcm63xx_pcie_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + u32 data; + u32 reg = where & ~3; + + if (!bcm63xx_pcie_can_access(bus, devfn)) + return PCIBIOS_DEVICE_NOT_FOUND; + + if (bus->number == PCIE_BUS_DEVICE) + reg += PCIE_DEVICE_OFFSET; + + data = bcm_pcie_readl(reg); + + *val = postprocess_read(data, where, size); + + return PCIBIOS_SUCCESSFUL; + +} + +static int bcm63xx_pcie_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + u32 data; + u32 reg = where & ~3; + + if (!bcm63xx_pcie_can_access(bus, devfn)) + return PCIBIOS_DEVICE_NOT_FOUND; + + if (bus->number == PCIE_BUS_DEVICE) + reg += PCIE_DEVICE_OFFSET; + + + data = bcm_pcie_readl(reg); + + data = preprocess_write(data, val, where, size); + bcm_pcie_writel(data, reg); + + return PCIBIOS_SUCCESSFUL; +} + + +struct pci_ops bcm63xx_pcie_ops = { + .read = bcm63xx_pcie_read, + .write = bcm63xx_pcie_write +}; diff --git a/arch/mips/pci/ops-bonito64.c b/arch/mips/pci/ops-bonito64.c index dc35270b65a..c06205a8734 100644 --- a/arch/mips/pci/ops-bonito64.c +++ b/arch/mips/pci/ops-bonito64.c @@ -22,90 +22,59 @@ #include <linux/types.h> #include <linux/pci.h> #include <linux/kernel.h> -#include <linux/init.h> #include <asm/mips-boards/bonito64.h> -#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_READ 0 #define PCI_ACCESS_WRITE 1 -/* - * PCI configuration cycle AD bus definition - */ -/* Type 0 */ -#define PCI_CFG_TYPE0_REG_SHF 0 -#define PCI_CFG_TYPE0_FUNC_SHF 8 +#define CFG_SPACE_REG(offset) (void *)CKSEG1ADDR(_pcictrl_bonito_pcicfg + (offset)) +#define ID_SEL_BEGIN 10 +#define MAX_DEV_NUM (31 - ID_SEL_BEGIN) -/* Type 1 */ -#define PCI_CFG_TYPE1_REG_SHF 0 -#define PCI_CFG_TYPE1_FUNC_SHF 8 -#define PCI_CFG_TYPE1_DEV_SHF 11 -#define PCI_CFG_TYPE1_BUS_SHF 16 static int bonito64_pcibios_config_access(unsigned char access_type, struct pci_bus *bus, unsigned int devfn, int where, u32 * data) { - unsigned char busnum = bus->number; + u32 busnum = bus->number; + u32 addr, type; u32 dummy; - u64 pci_addr; - - /* Algorithmics Bonito64 system controller. */ + void *addrp; + int device = PCI_SLOT(devfn); + int function = PCI_FUNC(devfn); + int reg = where & ~3; - if ((busnum == 0) && (PCI_SLOT(devfn) > 21)) { - /* We number bus 0 devices from 0..21 */ - return -1; - } - - /* Clear cause register bits */ - BONITO_PCICMD |= (BONITO_PCICMD_MABORT_CLR | - BONITO_PCICMD_MTABORT_CLR); - - /* - * Setup pattern to be used as PCI "address" for - * Type 0 cycle - */ if (busnum == 0) { - /* IDSEL */ - pci_addr = (u64) 1 << (PCI_SLOT(devfn) + 10); - } else { - /* Bus number */ - pci_addr = busnum << PCI_CFG_TYPE1_BUS_SHF; - - /* Device number */ - pci_addr |= - PCI_SLOT(devfn) << PCI_CFG_TYPE1_DEV_SHF; - } - - /* Function (same for Type 0/1) */ - pci_addr |= PCI_FUNC(devfn) << PCI_CFG_TYPE0_FUNC_SHF; - - /* Register number (same for Type 0/1) */ - pci_addr |= (where & ~0x3) << PCI_CFG_TYPE0_REG_SHF; + /* Type 0 configuration for onboard PCI bus */ + if (device > MAX_DEV_NUM) + return -1; - if (busnum == 0) { - /* Type 0 */ - BONITO_PCIMAP_CFG = pci_addr >> 16; + addr = (1 << (device + ID_SEL_BEGIN)) | (function << 8) | reg; + type = 0; } else { - /* Type 1 */ - BONITO_PCIMAP_CFG = (pci_addr >> 16) | 0x10000; + /* Type 1 configuration for offboard PCI bus */ + addr = (busnum << 16) | (device << 11) | (function << 8) | reg; + type = 0x10000; } - pci_addr &= 0xffff; + /* Clear aborts */ + BONITO_PCICMD |= BONITO_PCICMD_MABORT_CLR | BONITO_PCICMD_MTABORT_CLR; + + BONITO_PCIMAP_CFG = (addr >> 16) | type; /* Flush Bonito register block */ dummy = BONITO_PCIMAP_CFG; - iob(); /* sync */ + mmiowb(); - /* Perform access */ + addrp = CFG_SPACE_REG(addr & 0xffff); if (access_type == PCI_ACCESS_WRITE) { - *(volatile u32 *) (_pcictrl_bonito_pcicfg + (u32)pci_addr) = *(u32 *) data; - + writel(cpu_to_le32(*data), addrp); /* Wait till done */ while (BONITO_PCIMSTAT & 0xF); } else { - *(u32 *) data = *(volatile u32 *) (_pcictrl_bonito_pcicfg + (u32)pci_addr); + *data = le32_to_cpu(readl(addrp)); } /* Detect Master/Target abort */ @@ -121,6 +90,7 @@ static int bonito64_pcibios_config_access(unsigned char access_type, } return 0; + } @@ -166,7 +136,7 @@ static int bonito64_pcibios_write(struct pci_bus *bus, unsigned int devfn, data = val; else { if (bonito64_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, - where, &data)) + where, &data)) return -1; if (size == 1) diff --git a/arch/mips/pci/ops-bridge.c b/arch/mips/pci/ops-bridge.c new file mode 100644 index 00000000000..438319465cb --- /dev/null +++ b/arch/mips/pci/ops-bridge.c @@ -0,0 +1,322 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1999, 2000, 04, 06 Ralf Baechle (ralf@linux-mips.org) + * Copyright (C) 1999, 2000 Silicon Graphics, Inc. + */ +#include <linux/pci.h> +#include <asm/paccess.h> +#include <asm/pci/bridge.h> +#include <asm/sn/arch.h> +#include <asm/sn/intr.h> +#include <asm/sn/sn0/hub.h> + +/* + * Most of the IOC3 PCI config register aren't present + * we emulate what is needed for a normal PCI enumeration + */ +static u32 emulate_ioc3_cfg(int where, int size) +{ + if (size == 1 && where == 0x3d) + return 0x01; + else if (size == 2 && where == 0x3c) + return 0x0100; + else if (size == 4 && where == 0x3c) + return 0x00000100; + + return 0; +} + +/* + * The Bridge ASIC supports both type 0 and type 1 access. Type 1 is + * not really documented, so right now I can't write code which uses it. + * Therefore we use type 0 accesses for now even though they won't work + * correcly for PCI-to-PCI bridges. + * + * The function is complicated by the ultimate brokeness of the IOC3 chip + * which is used in SGI systems. The IOC3 can only handle 32-bit PCI + * accesses and does only decode parts of it's address space. + */ + +static int pci_conf0_read_config(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 * value) +{ + struct bridge_controller *bc = BRIDGE_CONTROLLER(bus); + bridge_t *bridge = bc->base; + int slot = PCI_SLOT(devfn); + int fn = PCI_FUNC(devfn); + volatile void *addr; + u32 cf, shift, mask; + int res; + + addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[PCI_VENDOR_ID]; + if (get_dbe(cf, (u32 *) addr)) + return PCIBIOS_DEVICE_NOT_FOUND; + + /* + * IOC3 is fucking fucked beyond belief ... Don't even give the + * generic PCI code a chance to look at it for real ... + */ + if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16))) + goto oh_my_gawd; + + addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[where ^ (4 - size)]; + + if (size == 1) + res = get_dbe(*value, (u8 *) addr); + else if (size == 2) + res = get_dbe(*value, (u16 *) addr); + else + res = get_dbe(*value, (u32 *) addr); + + return res ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; + +oh_my_gawd: + + /* + * IOC3 is fucking fucked beyond belief ... Don't even give the + * generic PCI code a chance to look at the wrong register. + */ + if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) { + *value = emulate_ioc3_cfg(where, size); + return PCIBIOS_SUCCESSFUL; + } + + /* + * IOC3 is fucking fucked beyond belief ... Don't try to access + * anything but 32-bit words ... + */ + addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2]; + + if (get_dbe(cf, (u32 *) addr)) + return PCIBIOS_DEVICE_NOT_FOUND; + + shift = ((where & 3) << 3); + mask = (0xffffffffU >> ((4 - size) << 3)); + *value = (cf >> shift) & mask; + + return PCIBIOS_SUCCESSFUL; +} + +static int pci_conf1_read_config(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 * value) +{ + struct bridge_controller *bc = BRIDGE_CONTROLLER(bus); + bridge_t *bridge = bc->base; + int busno = bus->number; + int slot = PCI_SLOT(devfn); + int fn = PCI_FUNC(devfn); + volatile void *addr; + u32 cf, shift, mask; + int res; + + bridge->b_pci_cfg = (busno << 16) | (slot << 11); + addr = &bridge->b_type1_cfg.c[(fn << 8) | PCI_VENDOR_ID]; + if (get_dbe(cf, (u32 *) addr)) + return PCIBIOS_DEVICE_NOT_FOUND; + + /* + * IOC3 is fucking fucked beyond belief ... Don't even give the + * generic PCI code a chance to look at it for real ... + */ + if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16))) + goto oh_my_gawd; + + bridge->b_pci_cfg = (busno << 16) | (slot << 11); + addr = &bridge->b_type1_cfg.c[(fn << 8) | (where ^ (4 - size))]; + + if (size == 1) + res = get_dbe(*value, (u8 *) addr); + else if (size == 2) + res = get_dbe(*value, (u16 *) addr); + else + res = get_dbe(*value, (u32 *) addr); + + return res ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; + +oh_my_gawd: + + /* + * IOC3 is fucking fucked beyond belief ... Don't even give the + * generic PCI code a chance to look at the wrong register. + */ + if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) { + *value = emulate_ioc3_cfg(where, size); + return PCIBIOS_SUCCESSFUL; + } + + /* + * IOC3 is fucking fucked beyond belief ... Don't try to access + * anything but 32-bit words ... + */ + bridge->b_pci_cfg = (busno << 16) | (slot << 11); + addr = &bridge->b_type1_cfg.c[(fn << 8) | where]; + + if (get_dbe(cf, (u32 *) addr)) + return PCIBIOS_DEVICE_NOT_FOUND; + + shift = ((where & 3) << 3); + mask = (0xffffffffU >> ((4 - size) << 3)); + *value = (cf >> shift) & mask; + + return PCIBIOS_SUCCESSFUL; +} + +static int pci_read_config(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 * value) +{ + if (bus->number > 0) + return pci_conf1_read_config(bus, devfn, where, size, value); + + return pci_conf0_read_config(bus, devfn, where, size, value); +} + +static int pci_conf0_write_config(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 value) +{ + struct bridge_controller *bc = BRIDGE_CONTROLLER(bus); + bridge_t *bridge = bc->base; + int slot = PCI_SLOT(devfn); + int fn = PCI_FUNC(devfn); + volatile void *addr; + u32 cf, shift, mask, smask; + int res; + + addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[PCI_VENDOR_ID]; + if (get_dbe(cf, (u32 *) addr)) + return PCIBIOS_DEVICE_NOT_FOUND; + + /* + * IOC3 is fucking fucked beyond belief ... Don't even give the + * generic PCI code a chance to look at it for real ... + */ + if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16))) + goto oh_my_gawd; + + addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[where ^ (4 - size)]; + + if (size == 1) { + res = put_dbe(value, (u8 *) addr); + } else if (size == 2) { + res = put_dbe(value, (u16 *) addr); + } else { + res = put_dbe(value, (u32 *) addr); + } + + if (res) + return PCIBIOS_DEVICE_NOT_FOUND; + + return PCIBIOS_SUCCESSFUL; + +oh_my_gawd: + + /* + * IOC3 is fucking fucked beyond belief ... Don't even give the + * generic PCI code a chance to touch the wrong register. + */ + if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) + return PCIBIOS_SUCCESSFUL; + + /* + * IOC3 is fucking fucked beyond belief ... Don't try to access + * anything but 32-bit words ... + */ + addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2]; + + if (get_dbe(cf, (u32 *) addr)) + return PCIBIOS_DEVICE_NOT_FOUND; + + shift = ((where & 3) << 3); + mask = (0xffffffffU >> ((4 - size) << 3)); + smask = mask << shift; + + cf = (cf & ~smask) | ((value & mask) << shift); + if (put_dbe(cf, (u32 *) addr)) + return PCIBIOS_DEVICE_NOT_FOUND; + + return PCIBIOS_SUCCESSFUL; +} + +static int pci_conf1_write_config(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 value) +{ + struct bridge_controller *bc = BRIDGE_CONTROLLER(bus); + bridge_t *bridge = bc->base; + int slot = PCI_SLOT(devfn); + int fn = PCI_FUNC(devfn); + int busno = bus->number; + volatile void *addr; + u32 cf, shift, mask, smask; + int res; + + bridge->b_pci_cfg = (busno << 16) | (slot << 11); + addr = &bridge->b_type1_cfg.c[(fn << 8) | PCI_VENDOR_ID]; + if (get_dbe(cf, (u32 *) addr)) + return PCIBIOS_DEVICE_NOT_FOUND; + + /* + * IOC3 is fucking fucked beyond belief ... Don't even give the + * generic PCI code a chance to look at it for real ... + */ + if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16))) + goto oh_my_gawd; + + addr = &bridge->b_type1_cfg.c[(fn << 8) | (where ^ (4 - size))]; + + if (size == 1) { + res = put_dbe(value, (u8 *) addr); + } else if (size == 2) { + res = put_dbe(value, (u16 *) addr); + } else { + res = put_dbe(value, (u32 *) addr); + } + + if (res) + return PCIBIOS_DEVICE_NOT_FOUND; + + return PCIBIOS_SUCCESSFUL; + +oh_my_gawd: + + /* + * IOC3 is fucking fucked beyond belief ... Don't even give the + * generic PCI code a chance to touch the wrong register. + */ + if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) + return PCIBIOS_SUCCESSFUL; + + /* + * IOC3 is fucking fucked beyond belief ... Don't try to access + * anything but 32-bit words ... + */ + addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2]; + + if (get_dbe(cf, (u32 *) addr)) + return PCIBIOS_DEVICE_NOT_FOUND; + + shift = ((where & 3) << 3); + mask = (0xffffffffU >> ((4 - size) << 3)); + smask = mask << shift; + + cf = (cf & ~smask) | ((value & mask) << shift); + if (put_dbe(cf, (u32 *) addr)) + return PCIBIOS_DEVICE_NOT_FOUND; + + return PCIBIOS_SUCCESSFUL; +} + +static int pci_write_config(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 value) +{ + if (bus->number > 0) + return pci_conf1_write_config(bus, devfn, where, size, value); + + return pci_conf0_write_config(bus, devfn, where, size, value); +} + +struct pci_ops bridge_pci_ops = { + .read = pci_read_config, + .write = pci_write_config, +}; diff --git a/arch/mips/pci/ops-ddb5074.c b/arch/mips/pci/ops-ddb5074.c deleted file mode 100644 index 89f97bef4fc..00000000000 --- a/arch/mips/pci/ops-ddb5074.c +++ /dev/null @@ -1,271 +0,0 @@ -/* - * Copyright 2001 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * arch/mips/ddb5xxx/ddb5476/pci_ops.c - * Define the pci_ops for DB5477. - * - * Much of the code is derived from the original DDB5074 port by - * Geert Uytterhoeven <geert@sonycom.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - */ -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/types.h> - -#include <asm/addrspace.h> -#include <asm/debug.h> - -#include <asm/ddb5xxx/ddb5xxx.h> - -/* - * config_swap structure records what set of pdar/pmr are used - * to access pci config space. It also provides a place hold the - * original values for future restoring. - */ -struct pci_config_swap { - u32 pdar; - u32 pmr; - u32 config_base; - u32 config_size; - u32 pdar_backup; - u32 pmr_backup; -}; - -/* - * On DDB5476, we have one set of swap registers - */ -struct pci_config_swap ext_pci_swap = { - DDB_PCIW0, - DDB_PCIINIT0, - DDB_PCI_CONFIG_BASE, - DDB_PCI_CONFIG_SIZE -}; - -static int pci_config_workaround = 1; - -/* - * access config space - */ -static inline u32 ddb_access_config_base(struct pci_config_swap *swap, u32 bus, /* 0 means top level bus */ - u32 slot_num) -{ - u32 pci_addr = 0; - u32 pciinit_offset = 0; - u32 virt_addr = swap->config_base; - u32 option; - - if (pci_config_workaround) { - if (slot_num == 5) - slot_num = 14; - } else { - if (slot_num == 5) - return DDB_BASE + DDB_PCI_BASE; - } - - /* minimum pdar (window) size is 2MB */ - db_assert(swap->config_size >= (2 << 20)); - - db_assert(slot_num < (1 << 5)); - db_assert(bus < (1 << 8)); - - /* backup registers */ - swap->pdar_backup = ddb_in32(swap->pdar); - swap->pmr_backup = ddb_in32(swap->pmr); - - /* set the pdar (pci window) register */ - ddb_set_pdar(swap->pdar, swap->config_base, swap->config_size, 32, /* 32 bit wide */ - 0, /* not on local memory bus */ - 0); /* not visible from PCI bus (N/A) */ - - /* - * calcuate the absolute pci config addr; - * according to the spec, we start scanning from adr:11 (0x800) - */ - if (bus == 0) { - /* type 0 config */ - pci_addr = 0x00040000 << slot_num; - } else { - /* type 1 config */ - pci_addr = 0x00040000 << slot_num; - panic - ("ddb_access_config_base: we don't support type 1 config Yet"); - } - - /* - * if pci_addr is less than pci config window size, we set - * pciinit_offset to 0 and adjust the virt_address. - * Otherwise we will try to adjust pciinit_offset. - */ - if (pci_addr < swap->config_size) { - virt_addr = KSEG1ADDR(swap->config_base + pci_addr); - pciinit_offset = 0; - } else { - db_assert((pci_addr & (swap->config_size - 1)) == 0); - virt_addr = KSEG1ADDR(swap->config_base); - pciinit_offset = pci_addr; - } - - /* set the pmr register */ - option = DDB_PCI_ACCESS_32; - if (bus != 0) - option |= DDB_PCI_CFGTYPE1; - ddb_set_pmr(swap->pmr, DDB_PCICMD_CFG, pciinit_offset, option); - - return virt_addr; -} - -static inline void ddb_close_config_base(struct pci_config_swap *swap) -{ - ddb_out32(swap->pdar, swap->pdar_backup); - ddb_out32(swap->pmr, swap->pmr_backup); -} - -static int read_config_dword(struct pci_config_swap *swap, - struct pci_dev *dev, u32 where, u32 * val) -{ - u32 bus, slot_num, func_num; - u32 base; - - db_assert((where & 3) == 0); - db_assert(where < (1 << 8)); - - /* check if the bus is top-level */ - if (dev->bus->parent != NULL) { - bus = dev->bus->number; - db_assert(bus != 0); - } else { - bus = 0; - } - - slot_num = PCI_SLOT(dev->devfn); - func_num = PCI_FUNC(dev->devfn); - base = ddb_access_config_base(swap, bus, slot_num); - *val = *(volatile u32 *) (base + (func_num << 8) + where); - ddb_close_config_base(swap); - return PCIBIOS_SUCCESSFUL; -} - -static int read_config_word(struct pci_config_swap *swap, - struct pci_dev *dev, u32 where, u16 * val) -{ - int status; - u32 result; - - db_assert((where & 1) == 0); - - status = read_config_dword(swap, dev, where & ~3, &result); - if (where & 2) - result >>= 16; - *val = result & 0xffff; - return status; -} - -static int read_config_byte(struct pci_config_swap *swap, - struct pci_dev *dev, u32 where, u8 * val) -{ - int status; - u32 result; - - status = read_config_dword(swap, dev, where & ~3, &result); - if (where & 1) - result >>= 8; - if (where & 2) - result >>= 16; - *val = result & 0xff; - return status; -} - -static int write_config_dword(struct pci_config_swap *swap, - struct pci_dev *dev, u32 where, u32 val) -{ - u32 bus, slot_num, func_num; - u32 base; - - db_assert((where & 3) == 0); - db_assert(where < (1 << 8)); - - /* check if the bus is top-level */ - if (dev->bus->parent != NULL) { - bus = dev->bus->number; - db_assert(bus != 0); - } else { - bus = 0; - } - - slot_num = PCI_SLOT(dev->devfn); - func_num = PCI_FUNC(dev->devfn); - base = ddb_access_config_base(swap, bus, slot_num); - *(volatile u32 *) (base + (func_num << 8) + where) = val; - ddb_close_config_base(swap); - return PCIBIOS_SUCCESSFUL; -} - -static int write_config_word(struct pci_config_swap *swap, - struct pci_dev *dev, u32 where, u16 val) -{ - int status, shift = 0; - u32 result; - - db_assert((where & 1) == 0); - - status = read_config_dword(swap, dev, where & ~3, &result); - if (status != PCIBIOS_SUCCESSFUL) - return status; - - if (where & 2) - shift += 16; - result &= ~(0xffff << shift); - result |= val << shift; - return write_config_dword(swap, dev, where & ~3, result); -} - -static int write_config_byte(struct pci_config_swap *swap, - struct pci_dev *dev, u32 where, u8 val) -{ - int status, shift = 0; - u32 result; - - status = read_config_dword(swap, dev, where & ~3, &result); - if (status != PCIBIOS_SUCCESSFUL) - return status; - - if (where & 2) - shift += 16; - if (where & 1) - shift += 8; - result &= ~(0xff << shift); - result |= val << shift; - return write_config_dword(swap, dev, where & ~3, result); -} - -#define MAKE_PCI_OPS(prefix, rw, unitname, unittype, pciswap) \ -static int prefix##_##rw##_config_##unitname(struct pci_dev *dev, int where, unittype val) \ -{ \ - return rw##_config_##unitname(pciswap, \ - dev, \ - where, \ - val); \ -} - -MAKE_PCI_OPS(extpci, read, byte, u8 *, &ext_pci_swap) - MAKE_PCI_OPS(extpci, read, word, u16 *, &ext_pci_swap) - MAKE_PCI_OPS(extpci, read, dword, u32 *, &ext_pci_swap) - - MAKE_PCI_OPS(extpci, write, byte, u8, &ext_pci_swap) - MAKE_PCI_OPS(extpci, write, word, u16, &ext_pci_swap) - MAKE_PCI_OPS(extpci, write, dword, u32, &ext_pci_swap) - -struct pci_ops ddb5476_ext_pci_ops = { - extpci_read_config_byte, - extpci_read_config_word, - extpci_read_config_dword, - extpci_write_config_byte, - extpci_write_config_word, - extpci_write_config_dword -}; diff --git a/arch/mips/pci/ops-ddb5476.c b/arch/mips/pci/ops-ddb5476.c deleted file mode 100644 index 12da58e75ec..00000000000 --- a/arch/mips/pci/ops-ddb5476.c +++ /dev/null @@ -1,286 +0,0 @@ -/* - * Copyright 2001 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * arch/mips/ddb5xxx/ddb5476/pci_ops.c - * Define the pci_ops for DB5477. - * - * Much of the code is derived from the original DDB5074 port by - * Geert Uytterhoeven <geert@sonycom.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - */ -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/types.h> - -#include <asm/addrspace.h> -#include <asm/debug.h> - -#include <asm/ddb5xxx/ddb5xxx.h> - -/* - * config_swap structure records what set of pdar/pmr are used - * to access pci config space. It also provides a place hold the - * original values for future restoring. - */ -struct pci_config_swap { - u32 pdar; - u32 pmr; - u32 config_base; - u32 config_size; - u32 pdar_backup; - u32 pmr_backup; -}; - -/* - * On DDB5476, we have one set of swap registers - */ -struct pci_config_swap ext_pci_swap = { - DDB_PCIW0, - DDB_PCIINIT0, - DDB_PCI_CONFIG_BASE, - DDB_PCI_CONFIG_SIZE -}; - -static int pci_config_workaround = 1; - -/* - * access config space - */ -static inline u32 ddb_access_config_base(struct pci_config_swap *swap, u32 bus, /* 0 means top level bus */ - u32 slot_num) -{ - u32 pci_addr = 0; - u32 pciinit_offset = 0; - u32 virt_addr = swap->config_base; - u32 option; - - if (pci_config_workaround) { - /* [jsun] work around Vrc5476 controller itself, returnning - * slot 0 essentially makes vrc5476 invisible - */ - if (slot_num == 12) - slot_num = 0; - -#if 0 - /* BUG : skip P2P bridge for now */ - if (slot_num == 5) - slot_num = 0; -#endif - - } else { - /* now we have to be hornest, returning the true - * PCI config headers for vrc5476 - */ - if (slot_num == 12) { - swap->pdar_backup = ddb_in32(swap->pdar); - swap->pmr_backup = ddb_in32(swap->pmr); - return DDB_BASE + DDB_PCI_BASE; - } - } - - /* minimum pdar (window) size is 2MB */ - db_assert(swap->config_size >= (2 << 20)); - - db_assert(slot_num < (1 << 5)); - db_assert(bus < (1 << 8)); - - /* backup registers */ - swap->pdar_backup = ddb_in32(swap->pdar); - swap->pmr_backup = ddb_in32(swap->pmr); - - /* set the pdar (pci window) register */ - ddb_set_pdar(swap->pdar, swap->config_base, swap->config_size, 32, /* 32 bit wide */ - 0, /* not on local memory bus */ - 0); /* not visible from PCI bus (N/A) */ - - /* - * calcuate the absolute pci config addr; - * according to the spec, we start scanning from adr:11 (0x800) - */ - if (bus == 0) { - /* type 0 config */ - pci_addr = 0x800 << slot_num; - } else { - /* type 1 config */ - pci_addr = (bus << 16) | (slot_num << 11); - /* panic("ddb_access_config_base: we don't support type 1 config Yet"); */ - } - - /* - * if pci_addr is less than pci config window size, we set - * pciinit_offset to 0 and adjust the virt_address. - * Otherwise we will try to adjust pciinit_offset. - */ - if (pci_addr < swap->config_size) { - virt_addr = KSEG1ADDR(swap->config_base + pci_addr); - pciinit_offset = 0; - } else { - db_assert((pci_addr & (swap->config_size - 1)) == 0); - virt_addr = KSEG1ADDR(swap->config_base); - pciinit_offset = pci_addr; - } - - /* set the pmr register */ - option = DDB_PCI_ACCESS_32; - if (bus != 0) - option |= DDB_PCI_CFGTYPE1; - ddb_set_pmr(swap->pmr, DDB_PCICMD_CFG, pciinit_offset, option); - - return virt_addr; -} - -static inline void ddb_close_config_base(struct pci_config_swap *swap) -{ - ddb_out32(swap->pdar, swap->pdar_backup); - ddb_out32(swap->pmr, swap->pmr_backup); -} - -static int read_config_dword(struct pci_config_swap *swap, - struct pci_dev *dev, u32 where, u32 * val) -{ - u32 bus, slot_num, func_num; - u32 base; - - db_assert((where & 3) == 0); - db_assert(where < (1 << 8)); - - /* check if the bus is top-level */ - if (dev->bus->parent != NULL) { - bus = dev->bus->number; - db_assert(bus != 0); - } else { - bus = 0; - } - - slot_num = PCI_SLOT(dev->devfn); - func_num = PCI_FUNC(dev->devfn); - base = ddb_access_config_base(swap, bus, slot_num); - *val = *(volatile u32 *) (base + (func_num << 8) + where); - ddb_close_config_base(swap); - return PCIBIOS_SUCCESSFUL; -} - -static int read_config_word(struct pci_config_swap *swap, - struct pci_dev *dev, u32 where, u16 * val) -{ - int status; - u32 result; - - db_assert((where & 1) == 0); - - status = read_config_dword(swap, dev, where & ~3, &result); - if (where & 2) - result >>= 16; - *val = result & 0xffff; - return status; -} - -static int read_config_byte(struct pci_config_swap *swap, - struct pci_dev *dev, u32 where, u8 * val) -{ - int status; - u32 result; - - status = read_config_dword(swap, dev, where & ~3, &result); - if (where & 1) - result >>= 8; - if (where & 2) - result >>= 16; - *val = result & 0xff; - return status; -} - -static int write_config_dword(struct pci_config_swap *swap, - struct pci_dev *dev, u32 where, u32 val) -{ - u32 bus, slot_num, func_num; - u32 base; - - db_assert((where & 3) == 0); - db_assert(where < (1 << 8)); - - /* check if the bus is top-level */ - if (dev->bus->parent != NULL) { - bus = dev->bus->number; - db_assert(bus != 0); - } else { - bus = 0; - } - - slot_num = PCI_SLOT(dev->devfn); - func_num = PCI_FUNC(dev->devfn); - base = ddb_access_config_base(swap, bus, slot_num); - *(volatile u32 *) (base + (func_num << 8) + where) = val; - ddb_close_config_base(swap); - return PCIBIOS_SUCCESSFUL; -} - -static int write_config_word(struct pci_config_swap *swap, - struct pci_dev *dev, u32 where, u16 val) -{ - int status, shift = 0; - u32 result; - - db_assert((where & 1) == 0); - - status = read_config_dword(swap, dev, where & ~3, &result); - if (status != PCIBIOS_SUCCESSFUL) - return status; - - if (where & 2) - shift += 16; - result &= ~(0xffff << shift); - result |= val << shift; - return write_config_dword(swap, dev, where & ~3, result); -} - -static int write_config_byte(struct pci_config_swap *swap, - struct pci_dev *dev, u32 where, u8 val) -{ - int status, shift = 0; - u32 result; - - status = read_config_dword(swap, dev, where & ~3, &result); - if (status != PCIBIOS_SUCCESSFUL) - return status; - - if (where & 2) - shift += 16; - if (where & 1) - shift += 8; - result &= ~(0xff << shift); - result |= val << shift; - return write_config_dword(swap, dev, where & ~3, result); -} - -#define MAKE_PCI_OPS(prefix, rw, unitname, unittype, pciswap) \ -static int prefix##_##rw##_config_##unitname(struct pci_dev *dev, int where, unittype val) \ -{ \ - return rw##_config_##unitname(pciswap, \ - dev, \ - where, \ - val); \ -} - -MAKE_PCI_OPS(extpci, read, byte, u8 *, &ext_pci_swap) - MAKE_PCI_OPS(extpci, read, word, u16 *, &ext_pci_swap) - MAKE_PCI_OPS(extpci, read, dword, u32 *, &ext_pci_swap) - - MAKE_PCI_OPS(extpci, write, byte, u8, &ext_pci_swap) - MAKE_PCI_OPS(extpci, write, word, u16, &ext_pci_swap) - MAKE_PCI_OPS(extpci, write, dword, u32, &ext_pci_swap) - -struct pci_ops ddb5476_ext_pci_ops = { - extpci_read_config_byte, - extpci_read_config_word, - extpci_read_config_dword, - extpci_write_config_byte, - extpci_write_config_word, - extpci_write_config_dword -}; diff --git a/arch/mips/pci/ops-ddb5477.c b/arch/mips/pci/ops-ddb5477.c deleted file mode 100644 index 8e57d4c5d90..00000000000 --- a/arch/mips/pci/ops-ddb5477.c +++ /dev/null @@ -1,278 +0,0 @@ -/*********************************************************************** - * Copyright 2001 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * arch/mips/ddb5xxx/ddb5477/pci_ops.c - * Define the pci_ops for DB5477. - * - * Much of the code is derived from the original DDB5074 port by - * Geert Uytterhoeven <geert@sonycom.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - *********************************************************************** - */ - -/* - * DDB5477 has two PCI channels, external PCI and IOPIC (internal) - * Therefore we provide two sets of pci_ops. - */ -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/types.h> - -#include <asm/addrspace.h> -#include <asm/debug.h> - -#include <asm/ddb5xxx/ddb5xxx.h> - -/* - * config_swap structure records what set of pdar/pmr are used - * to access pci config space. It also provides a place hold the - * original values for future restoring. - */ -struct pci_config_swap { - u32 pdar; - u32 pmr; - u32 config_base; - u32 config_size; - u32 pdar_backup; - u32 pmr_backup; -}; - -/* - * On DDB5477, we have two sets of swap registers, for ext PCI and IOPCI. - */ -struct pci_config_swap ext_pci_swap = { - DDB_PCIW0, - DDB_PCIINIT00, - DDB_PCI0_CONFIG_BASE, - DDB_PCI0_CONFIG_SIZE -}; -struct pci_config_swap io_pci_swap = { - DDB_IOPCIW0, - DDB_PCIINIT01, - DDB_PCI1_CONFIG_BASE, - DDB_PCI1_CONFIG_SIZE -}; - - -/* - * access config space - */ -static inline u32 ddb_access_config_base(struct pci_config_swap *swap, u32 bus, /* 0 means top level bus */ - u32 slot_num) -{ - u32 pci_addr = 0; - u32 pciinit_offset = 0; - u32 virt_addr; - u32 option; - - /* minimum pdar (window) size is 2MB */ - db_assert(swap->config_size >= (2 << 20)); - - db_assert(slot_num < (1 << 5)); - db_assert(bus < (1 << 8)); - - /* backup registers */ - swap->pdar_backup = ddb_in32(swap->pdar); - swap->pmr_backup = ddb_in32(swap->pmr); - - /* set the pdar (pci window) register */ - ddb_set_pdar(swap->pdar, swap->config_base, swap->config_size, 32, /* 32 bit wide */ - 0, /* not on local memory bus */ - 0); /* not visible from PCI bus (N/A) */ - - /* - * calcuate the absolute pci config addr; - * according to the spec, we start scanning from adr:11 (0x800) - */ - if (bus == 0) { - /* type 0 config */ - pci_addr = 0x800 << slot_num; - } else { - /* type 1 config */ - pci_addr = (bus << 16) | (slot_num << 11); - } - - /* - * if pci_addr is less than pci config window size, we set - * pciinit_offset to 0 and adjust the virt_address. - * Otherwise we will try to adjust pciinit_offset. - */ - if (pci_addr < swap->config_size) { - virt_addr = KSEG1ADDR(swap->config_base + pci_addr); - pciinit_offset = 0; - } else { - db_assert((pci_addr & (swap->config_size - 1)) == 0); - virt_addr = KSEG1ADDR(swap->config_base); - pciinit_offset = pci_addr; - } - - /* set the pmr register */ - option = DDB_PCI_ACCESS_32; - if (bus != 0) - option |= DDB_PCI_CFGTYPE1; - ddb_set_pmr(swap->pmr, DDB_PCICMD_CFG, pciinit_offset, option); - - return virt_addr; -} - -static inline void ddb_close_config_base(struct pci_config_swap *swap) -{ - ddb_out32(swap->pdar, swap->pdar_backup); - ddb_out32(swap->pmr, swap->pmr_backup); -} - -static int read_config_dword(struct pci_config_swap *swap, - struct pci_bus *bus, u32 devfn, u32 where, - u32 * val) -{ - u32 bus_num, slot_num, func_num; - u32 base; - - db_assert((where & 3) == 0); - db_assert(where < (1 << 8)); - - /* check if the bus is top-level */ - if (bus->parent != NULL) { - bus_num = bus->number; - db_assert(bus_num != 0); - } else { - bus_num = 0; - } - - slot_num = PCI_SLOT(devfn); - func_num = PCI_FUNC(devfn); - base = ddb_access_config_base(swap, bus_num, slot_num); - *val = *(volatile u32 *) (base + (func_num << 8) + where); - ddb_close_config_base(swap); - return PCIBIOS_SUCCESSFUL; -} - -static int read_config_word(struct pci_config_swap *swap, - struct pci_bus *bus, u32 devfn, u32 where, - u16 * val) -{ - int status; - u32 result; - - db_assert((where & 1) == 0); - - status = read_config_dword(swap, bus, devfn, where & ~3, &result); - if (where & 2) - result >>= 16; - *val = result & 0xffff; - return status; -} - -static int read_config_byte(struct pci_config_swap *swap, - struct pci_bus *bus, u32 devfn, u32 where, - u8 * val) -{ - int status; - u32 result; - - status = read_config_dword(swap, bus, devfn, where & ~3, &result); - if (where & 1) - result >>= 8; - if (where & 2) - result >>= 16; - *val = result & 0xff; - - return status; -} - -static int write_config_dword(struct pci_config_swap *swap, - struct pci_bus *bus, u32 devfn, u32 where, - u32 val) -{ - u32 bus_num, slot_num, func_num; - u32 base; - - db_assert((where & 3) == 0); - db_assert(where < (1 << 8)); - - /* check if the bus is top-level */ - if (bus->parent != NULL) { - bus_num = bus->number; - db_assert(bus_num != 0); - } else { - bus_num = 0; - } - - slot_num = PCI_SLOT(devfn); - func_num = PCI_FUNC(devfn); - base = ddb_access_config_base(swap, bus_num, slot_num); - *(volatile u32 *) (base + (func_num << 8) + where) = val; - ddb_close_config_base(swap); - return PCIBIOS_SUCCESSFUL; -} - -static int write_config_word(struct pci_config_swap *swap, - struct pci_bus *bus, u32 devfn, u32 where, u16 val) -{ - int status, shift = 0; - u32 result; - - db_assert((where & 1) == 0); - - status = read_config_dword(swap, bus, devfn, where & ~3, &result); - if (status != PCIBIOS_SUCCESSFUL) - return status; - - if (where & 2) - shift += 16; - result &= ~(0xffff << shift); - result |= val << shift; - return write_config_dword(swap, bus, devfn, where & ~3, result); -} - -static int write_config_byte(struct pci_config_swap *swap, - struct pci_bus *bus, u32 devfn, u32 where, u8 val) -{ - int status, shift = 0; - u32 result; - - status = read_config_dword(swap, bus, devfn, where & ~3, &result); - if (status != PCIBIOS_SUCCESSFUL) - return status; - - if (where & 2) - shift += 16; - if (where & 1) - shift += 8; - result &= ~(0xff << shift); - result |= val << shift; - return write_config_dword(swap, bus, devfn, where & ~3, result); -} - -#define MAKE_PCI_OPS(prefix, rw, pciswap, star) \ -static int prefix##_##rw##_config(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 star val) \ -{ \ - if (size == 1) \ - return rw##_config_byte(pciswap, bus, devfn, where, (u8 star)val); \ - else if (size == 2) \ - return rw##_config_word(pciswap, bus, devfn, where, (u16 star)val); \ - /* Size must be 4 */ \ - return rw##_config_dword(pciswap, bus, devfn, where, val); \ -} - -MAKE_PCI_OPS(extpci, read, &ext_pci_swap, *) -MAKE_PCI_OPS(extpci, write, &ext_pci_swap,) - -MAKE_PCI_OPS(iopci, read, &io_pci_swap, *) -MAKE_PCI_OPS(iopci, write, &io_pci_swap,) - -struct pci_ops ddb5477_ext_pci_ops = { - .read = extpci_read_config, - .write = extpci_write_config -}; - - -struct pci_ops ddb5477_io_pci_ops = { - .read = iopci_read_config, - .write = iopci_write_config -}; diff --git a/arch/mips/pci/ops-emma2rh.c b/arch/mips/pci/ops-emma2rh.c new file mode 100644 index 00000000000..710aef5c070 --- /dev/null +++ b/arch/mips/pci/ops-emma2rh.c @@ -0,0 +1,182 @@ +/* + * Copyright (C) NEC Electronics Corporation 2004-2006 + * + * This file is based on the arch/mips/pci/ops-vr41xx.c + * + * Copyright 2001 MontaVista Software Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/types.h> + +#include <asm/addrspace.h> +#include <asm/debug.h> + +#include <asm/emma/emma2rh.h> + +#define RTABORT (0x1<<9) +#define RMABORT (0x1<<10) +#define EMMA2RH_PCI_SLOT_NUM 9 /* 0000:09.0 is final PCI device */ + +/* + * access config space + */ + +static int check_args(struct pci_bus *bus, u32 devfn, u32 * bus_num) +{ + /* check if the bus is top-level */ + if (bus->parent != NULL) { + *bus_num = bus->number; + db_assert(bus_num != NULL); + } else + *bus_num = 0; + + if (*bus_num == 0) { + /* Type 0 */ + if (PCI_SLOT(devfn) >= 10) + return PCIBIOS_DEVICE_NOT_FOUND; + } else { + /* Type 1 */ + if ((*bus_num >= 64) || (PCI_SLOT(devfn) >= 16)) + return PCIBIOS_DEVICE_NOT_FOUND; + } + return 0; +} + +static inline int set_pci_configuration_address(unsigned char bus_num, + unsigned int devfn, int where) +{ + u32 config_win0; + + emma2rh_out32(EMMA2RH_PCI_INT, ~RMABORT); + if (bus_num == 0) + /* + * Type 0 configuration + */ + config_win0 = (1 << (22 + PCI_SLOT(devfn))) | (5 << 9); + else + /* + * Type 1 configuration + */ + config_win0 = (bus_num << 26) | (PCI_SLOT(devfn) << 22) | + (1 << 15) | (5 << 9); + + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, config_win0); + + return 0; +} + +static int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, + int size, uint32_t * val) +{ + u32 bus_num; + u32 base = KSEG1ADDR(EMMA2RH_PCI_CONFIG_BASE); + u32 backup_win0; + u32 data; + + *val = 0xffffffffU; + + if (check_args(bus, devfn, &bus_num) == PCIBIOS_DEVICE_NOT_FOUND) + return PCIBIOS_DEVICE_NOT_FOUND; + + backup_win0 = emma2rh_in32(EMMA2RH_PCI_IWIN0_CTR); + + if (set_pci_configuration_address(bus_num, devfn, where) < 0) + return PCIBIOS_DEVICE_NOT_FOUND; + + data = + *(volatile u32 *)(base + (PCI_FUNC(devfn) << 8) + + (where & 0xfffffffc)); + + switch (size) { + case 1: + *val = (data >> ((where & 3) << 3)) & 0xffU; + break; + case 2: + *val = (data >> ((where & 2) << 3)) & 0xffffU; + break; + case 4: + *val = data; + break; + default: + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, backup_win0); + return PCIBIOS_FUNC_NOT_SUPPORTED; + } + + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, backup_win0); + + if (emma2rh_in32(EMMA2RH_PCI_INT) & RMABORT) + return PCIBIOS_DEVICE_NOT_FOUND; + + return PCIBIOS_SUCCESSFUL; +} + +static int pci_config_write(struct pci_bus *bus, unsigned int devfn, int where, + int size, u32 val) +{ + u32 bus_num; + u32 base = KSEG1ADDR(EMMA2RH_PCI_CONFIG_BASE); + u32 backup_win0; + u32 data; + int shift; + + if (check_args(bus, devfn, &bus_num) == PCIBIOS_DEVICE_NOT_FOUND) + return PCIBIOS_DEVICE_NOT_FOUND; + + backup_win0 = emma2rh_in32(EMMA2RH_PCI_IWIN0_CTR); + + if (set_pci_configuration_address(bus_num, devfn, where) < 0) + return PCIBIOS_DEVICE_NOT_FOUND; + + /* read modify write */ + data = + *(volatile u32 *)(base + (PCI_FUNC(devfn) << 8) + + (where & 0xfffffffc)); + + switch (size) { + case 1: + shift = (where & 3) << 3; + data &= ~(0xffU << shift); + data |= ((val & 0xffU) << shift); + break; + case 2: + shift = (where & 2) << 3; + data &= ~(0xffffU << shift); + data |= ((val & 0xffffU) << shift); + break; + case 4: + data = val; + break; + default: + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, backup_win0); + return PCIBIOS_FUNC_NOT_SUPPORTED; + } + *(volatile u32 *)(base + (PCI_FUNC(devfn) << 8) + + (where & 0xfffffffc)) = data; + + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, backup_win0); + if (emma2rh_in32(EMMA2RH_PCI_INT) & RMABORT) + return PCIBIOS_DEVICE_NOT_FOUND; + + return PCIBIOS_SUCCESSFUL; +} + +struct pci_ops emma2rh_pci_ops = { + .read = pci_config_read, + .write = pci_config_write, +}; diff --git a/arch/mips/pci/ops-gt64111.c b/arch/mips/pci/ops-gt64111.c deleted file mode 100644 index 13de45940b1..00000000000 --- a/arch/mips/pci/ops-gt64111.c +++ /dev/null @@ -1,100 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 1995, 1996, 1997, 2002 by Ralf Baechle - * Copyright (C) 2001, 2002, 2003 by Liam Davies (ldavies@agile.tv) - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <asm/pci.h> -#include <asm/io.h> -#include <asm/gt64120.h> - -#include <asm/mach-cobalt/cobalt.h> - -/* - * Device 31 on the GT64111 is used to generate PCI special - * cycles, so we shouldn't expected to find a device there ... - */ -static inline int pci_range_ck(struct pci_bus *bus, unsigned int devfn) -{ - if (bus->number == 0 && PCI_SLOT(devfn) < 31) - return 0; - - return -1; -} - -static int gt64111_pci_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * val) -{ - if (pci_range_ck(bus, devfn)) - return PCIBIOS_DEVICE_NOT_FOUND; - - switch (size) { - case 4: - PCI_CFG_SET(devfn, where); - *val = GALILEO_INL(GT_PCI0_CFGDATA_OFS); - return PCIBIOS_SUCCESSFUL; - - case 2: - PCI_CFG_SET(devfn, (where & ~0x3)); - *val = GALILEO_INL(GT_PCI0_CFGDATA_OFS) - >> ((where & 3) * 8); - return PCIBIOS_SUCCESSFUL; - - case 1: - PCI_CFG_SET(devfn, (where & ~0x3)); - *val = GALILEO_INL(GT_PCI0_CFGDATA_OFS) - >> ((where & 3) * 8); - return PCIBIOS_SUCCESSFUL; - } - - return PCIBIOS_BAD_REGISTER_NUMBER; -} - -static int gt64111_pci_write_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - u32 tmp; - - if (pci_range_ck(bus, devfn)) - return PCIBIOS_DEVICE_NOT_FOUND; - - switch (size) { - case 4: - PCI_CFG_SET(devfn, where); - GALILEO_OUTL(val, GT_PCI0_CFGDATA_OFS); - - return PCIBIOS_SUCCESSFUL; - - case 2: - PCI_CFG_SET(devfn, (where & ~0x3)); - tmp = GALILEO_INL(GT_PCI0_CFGDATA_OFS); - tmp &= ~(0xffff << ((where & 0x3) * 8)); - tmp |= (val << ((where & 0x3) * 8)); - GALILEO_OUTL(tmp, GT_PCI0_CFGDATA_OFS); - - return PCIBIOS_SUCCESSFUL; - - case 1: - PCI_CFG_SET(devfn, (where & ~0x3)); - tmp = GALILEO_INL(GT_PCI0_CFGDATA_OFS); - tmp &= ~(0xff << ((where & 0x3) * 8)); - tmp |= (val << ((where & 0x3) * 8)); - GALILEO_OUTL(tmp, GT_PCI0_CFGDATA_OFS); - - return PCIBIOS_SUCCESSFUL; - } - - return PCIBIOS_BAD_REGISTER_NUMBER; -} - -struct pci_ops gt64111_pci_ops = { - .read = gt64111_pci_read_config, - .write = gt64111_pci_write_config, -}; diff --git a/arch/mips/pci/ops-gt64120.c b/arch/mips/pci/ops-gt64xxx_pci0.c index 6335844d607..effcbda9f52 100644 --- a/arch/mips/pci/ops-gt64120.c +++ b/arch/mips/pci/ops-gt64xxx_pci0.c @@ -23,24 +23,24 @@ #include <asm/gt64120.h> -#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_READ 0 #define PCI_ACCESS_WRITE 1 /* * PCI configuration cycle AD bus definition */ /* Type 0 */ -#define PCI_CFG_TYPE0_REG_SHF 0 -#define PCI_CFG_TYPE0_FUNC_SHF 8 +#define PCI_CFG_TYPE0_REG_SHF 0 +#define PCI_CFG_TYPE0_FUNC_SHF 8 /* Type 1 */ -#define PCI_CFG_TYPE1_REG_SHF 0 -#define PCI_CFG_TYPE1_FUNC_SHF 8 -#define PCI_CFG_TYPE1_DEV_SHF 11 -#define PCI_CFG_TYPE1_BUS_SHF 16 +#define PCI_CFG_TYPE1_REG_SHF 0 +#define PCI_CFG_TYPE1_FUNC_SHF 8 +#define PCI_CFG_TYPE1_DEV_SHF 11 +#define PCI_CFG_TYPE1_BUS_SHF 16 -static int gt64120_pcibios_config_access(unsigned char access_type, - struct pci_bus *bus, unsigned int devfn, int where, u32 * data) +static int gt64xxx_pci0_pcibios_config_access(unsigned char access_type, + struct pci_bus *bus, unsigned int devfn, int where, u32 * data) { unsigned char busnum = bus->number; u32 intr; @@ -50,7 +50,7 @@ static int gt64120_pcibios_config_access(unsigned char access_type, /* Clear cause register bits */ GT_WRITE(GT_INTRCAUSE_OFS, ~(GT_INTRCAUSE_MASABORT0_BIT | - GT_INTRCAUSE_TARABORT0_BIT)); + GT_INTRCAUSE_TARABORT0_BIT)); /* Setup address */ GT_WRITE(GT_PCI0_CFGADDR_OFS, @@ -87,7 +87,7 @@ static int gt64120_pcibios_config_access(unsigned char access_type, /* Clear bits */ GT_WRITE(GT_INTRCAUSE_OFS, ~(GT_INTRCAUSE_MASABORT0_BIT | - GT_INTRCAUSE_TARABORT0_BIT)); + GT_INTRCAUSE_TARABORT0_BIT)); return -1; } @@ -100,13 +100,13 @@ static int gt64120_pcibios_config_access(unsigned char access_type, * We can't address 8 and 16 bit words directly. Instead we have to * read/write a 32bit word and mask/modify the data we actually want. */ -static int gt64120_pcibios_read(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * val) +static int gt64xxx_pci0_pcibios_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 * val) { u32 data = 0; - if (gt64120_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, where, - &data)) + if (gt64xxx_pci0_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, + where, &data)) return PCIBIOS_DEVICE_NOT_FOUND; if (size == 1) @@ -119,16 +119,16 @@ static int gt64120_pcibios_read(struct pci_bus *bus, unsigned int devfn, return PCIBIOS_SUCCESSFUL; } -static int gt64120_pcibios_write(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) +static int gt64xxx_pci0_pcibios_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) { u32 data = 0; if (size == 4) data = val; else { - if (gt64120_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, - where, &data)) + if (gt64xxx_pci0_pcibios_config_access(PCI_ACCESS_READ, bus, + devfn, where, &data)) return PCIBIOS_DEVICE_NOT_FOUND; if (size == 1) @@ -139,14 +139,14 @@ static int gt64120_pcibios_write(struct pci_bus *bus, unsigned int devfn, (val << ((where & 3) << 3)); } - if (gt64120_pcibios_config_access(PCI_ACCESS_WRITE, bus, devfn, where, - &data)) + if (gt64xxx_pci0_pcibios_config_access(PCI_ACCESS_WRITE, bus, devfn, + where, &data)) return PCIBIOS_DEVICE_NOT_FOUND; return PCIBIOS_SUCCESSFUL; } -struct pci_ops gt64120_pci_ops = { - .read = gt64120_pcibios_read, - .write = gt64120_pcibios_write +struct pci_ops gt64xxx_pci0_ops = { + .read = gt64xxx_pci0_pcibios_read, + .write = gt64xxx_pci0_pcibios_write }; diff --git a/arch/mips/pci/ops-gt96100.c b/arch/mips/pci/ops-gt96100.c deleted file mode 100644 index 9e4ea6627e2..00000000000 --- a/arch/mips/pci/ops-gt96100.c +++ /dev/null @@ -1,169 +0,0 @@ -/* - * - * BRIEF MODULE DESCRIPTION - * Galileo EV96100 board specific pci support. - * - * Copyright 2000 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ppopov@mvista.com or source@mvista.com - * - * This file was derived from Carsten Langgaard's - * arch/mips/mips-boards/generic/pci.c - * - * Carsten Langgaard, carstenl@mips.com - * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <asm/delay.h> -#include <asm/gt64120.h> -#include <asm/galileo-boards/ev96100.h> - -#define PCI_ACCESS_READ 0 -#define PCI_ACCESS_WRITE 1 - -static int static gt96100_config_access(unsigned char access_type, - struct pci_bus *bus, unsigned int devfn, int where, u32 * data) -{ - unsigned char bus = bus->number; - u32 intr; - - /* - * Because of a bug in the galileo (for slot 31). - */ - if (bus == 0 && devfn >= PCI_DEVFN(31, 0)) - return PCIBIOS_DEVICE_NOT_FOUND; - - /* Clear cause register bits */ - GT_WRITE(GT_INTRCAUSE_OFS, ~(GT_INTRCAUSE_MASABORT0_BIT | - GT_INTRCAUSE_TARABORT0_BIT)); - - /* Setup address */ - GT_WRITE(GT_PCI0_CFGADDR_OFS, - (bus << GT_PCI0_CFGADDR_BUSNUM_SHF) | - (devfn << GT_PCI0_CFGADDR_FUNCTNUM_SHF) | - ((where / 4) << GT_PCI0_CFGADDR_REGNUM_SHF) | - GT_PCI0_CFGADDR_CONFIGEN_BIT); - udelay(2); - - - if (access_type == PCI_ACCESS_WRITE) { - if (devfn != 0) - *data = le32_to_cpu(*data); - GT_WRITE(GT_PCI0_CFGDATA_OFS, *data); - } else { - *data = GT_READ(GT_PCI0_CFGDATA_OFS); - if (devfn != 0) - *data = le32_to_cpu(*data); - } - - udelay(2); - - /* Check for master or target abort */ - intr = GT_READ(GT_INTRCAUSE_OFS); - - if (intr & (GT_INTRCAUSE_MASABORT0_BIT | GT_INTRCAUSE_TARABORT0_BIT)) { - /* Error occured */ - - /* Clear bits */ - GT_WRITE(GT_INTRCAUSE_OFS, ~(GT_INTRCAUSE_MASABORT0_BIT | - GT_INTRCAUSE_TARABORT0_BIT)); - return -1; - } - return 0; -} - -/* - * We can't address 8 and 16 bit words directly. Instead we have to - * read/write a 32bit word and mask/modify the data we actually want. - */ -static int gt96100_pcibios_read(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * val) -{ - u32 data = 0; - - if (gt96100_config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) - return PCIBIOS_DEVICE_NOT_FOUND; - - switch (size) { - case 1: - *val = (data >> ((where & 3) << 3)) & 0xff; - break; - - case 2: - *val = (data >> ((where & 3) << 3)) & 0xffff; - break; - - case 4: - *val = data; - break; - } - return PCIBIOS_SUCCESSFUL; -} - -static int gt96100_pcibios_write(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - u32 data = 0; - - switch (size) { - case 1: - if (gt96100_config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) - return -1; - - data = (data & ~(0xff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - - if (gt96100_config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data)) - return -1; - - return PCIBIOS_SUCCESSFUL; - - case 2: - if (gt96100_config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) - return -1; - - data = (data & ~(0xffff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - - if (gt96100_config_access(PCI_ACCESS_WRITE, dev, where, &data)) - return -1; - - - return PCIBIOS_SUCCESSFUL; - - case 4: - if (gt96100_config_access(PCI_ACCESS_WRITE, dev, where, &val)) - return -1; - - return PCIBIOS_SUCCESSFUL; - } -} - -struct pci_ops gt96100_pci_ops = { - .read = gt96100_pcibios_read, - .write = gt96100_pcibios_write -}; diff --git a/arch/mips/pci/ops-it8172.c b/arch/mips/pci/ops-it8172.c deleted file mode 100644 index b7a8b9a6f9d..00000000000 --- a/arch/mips/pci/ops-it8172.c +++ /dev/null @@ -1,215 +0,0 @@ -/* - * - * BRIEF MODULE DESCRIPTION - * IT8172 system controller specific pci support. - * - * Copyright 2000 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ppopov@mvista.com or source@mvista.com - * - * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <asm/it8172/it8172.h> -#include <asm/it8172/it8172_pci.h> - -#define PCI_ACCESS_READ 0 -#define PCI_ACCESS_WRITE 1 - -#undef DEBUG -#ifdef DEBUG -#define DBG(x...) printk(x) -#else -#define DBG(x...) -#endif - -static struct resource pci_mem_resource_1; - -static struct resource pci_io_resource = { - "io pci IO space", - 0x14018000, - 0x17FFFFFF, - IORESOURCE_IO -}; - -static struct resource pci_mem_resource_0 = { - "ext pci memory space 0/1", - 0x10101000, - 0x13FFFFFF, - IORESOURCE_MEM, - &pci_mem_resource_0, - NULL, - &pci_mem_resource_1 -}; - -static struct resource pci_mem_resource_1 = { - "ext pci memory space 2/3", - 0x1A000000, - 0x1FBFFFFF, - IORESOURCE_MEM, - &pci_mem_resource_0, - NULL, - NULL -}; - -extern struct pci_ops it8172_pci_ops; - -struct pci_controller it8172_controller = { - .pci_ops = &it8172_pci_ops, - .io_resource = &pci_io_resource, - .mem_resource = &pci_mem_resource_0, -}; - -static int it8172_pcibios_config_access(unsigned char access_type, - struct pci_bus *bus, - unsigned int devfn, int where, - u32 * data) -{ - /* - * config cycles are on 4 byte boundary only - */ - - /* Setup address */ - IT_WRITE(IT_CONFADDR, (bus->number << IT_BUSNUM_SHF) | - (devfn << IT_FUNCNUM_SHF) | (where & ~0x3)); - - if (access_type == PCI_ACCESS_WRITE) { - IT_WRITE(IT_CONFDATA, *data); - } else { - IT_READ(IT_CONFDATA, *data); - } - - /* - * Revisit: check for master or target abort. - */ - return 0; -} - - -/* - * We can't address 8 and 16 bit words directly. Instead we have to - * read/write a 32bit word and mask/modify the data we actually want. - */ -static write_config(struct pci_bus *bus, unsigned int devfn, int where, - int size, u32 val) -{ - u32 data = 0; - - switch (size) { - case 1: - if (it8172_pcibios_config_access - (PCI_ACCESS_READ, dev, where, &data)) - return -1; - - *val = (data >> ((where & 3) << 3)) & 0xff; - - return PCIBIOS_SUCCESSFUL; - - case 2: - - if (where & 1) - return PCIBIOS_BAD_REGISTER_NUMBER; - - if (it8172_pcibios_config_access - (PCI_ACCESS_READ, dev, where, &data)) - return -1; - - *val = (data >> ((where & 3) << 3)) & 0xffff; - DBG("cfg read word: bus %d dev_fn %x where %x: val %x\n", - dev->bus->number, dev->devfn, where, *val); - - return PCIBIOS_SUCCESSFUL; - - case 4: - - if (where & 3) - return PCIBIOS_BAD_REGISTER_NUMBER; - - if (it8172_pcibios_config_access - (PCI_ACCESS_READ, dev, where, &data)) - return -1; - - *val = data; - - return PCIBIOS_SUCCESSFUL; - } -} - - -static write_config(struct pci_bus *bus, unsigned int devfn, int where, - int size, u32 val) -{ - u32 data = 0; - - switch (size) { - case 1: - if (it8172_pcibios_config_access - (PCI_ACCESS_READ, dev, where, &data)) - return -1; - - data = (data & ~(0xff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - - if (it8172_pcibios_config_access - (PCI_ACCESS_WRITE, dev, where, &data)) - return -1; - - return PCIBIOS_SUCCESSFUL; - - case 2: - if (where & 1) - return PCIBIOS_BAD_REGISTER_NUMBER; - - if (it8172_pcibios_config_access - (PCI_ACCESS_READ, dev, where, &data)) - eturn - 1; - - data = (data & ~(0xffff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - - if (it8172_pcibios_config_access - (PCI_ACCESS_WRITE, dev, where, &data)) - return -1; - - return PCIBIOS_SUCCESSFUL; - - case 4: - if (where & 3) - return PCIBIOS_BAD_REGISTER_NUMBER; - - if (it8172_pcibios_config_access - (PCI_ACCESS_WRITE, dev, where, &val)) - return -1; - - return PCIBIOS_SUCCESSFUL; - } -} - -struct pci_ops it8172_pci_ops = { - .read = read_config, - .write = write_config, -}; diff --git a/arch/mips/pci/ops-lantiq.c b/arch/mips/pci/ops-lantiq.c new file mode 100644 index 00000000000..e5738ee26f4 --- /dev/null +++ b/arch/mips/pci/ops-lantiq.c @@ -0,0 +1,115 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * Copyright (C) 2010 John Crispin <blogic@openwrt.org> + */ + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/mm.h> +#include <asm/addrspace.h> +#include <linux/vmalloc.h> + +#include <lantiq_soc.h> + +#include "pci-lantiq.h" + +#define LTQ_PCI_CFG_BUSNUM_SHF 16 +#define LTQ_PCI_CFG_DEVNUM_SHF 11 +#define LTQ_PCI_CFG_FUNNUM_SHF 8 + +#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_WRITE 1 + +static int ltq_pci_config_access(unsigned char access_type, struct pci_bus *bus, + unsigned int devfn, unsigned int where, u32 *data) +{ + unsigned long cfg_base; + unsigned long flags; + u32 temp; + + /* we support slot from 0 to 15 dev_fn & 0x68 (AD29) is the + SoC itself */ + if ((bus->number != 0) || ((devfn & 0xf8) > 0x78) + || ((devfn & 0xf8) == 0) || ((devfn & 0xf8) == 0x68)) + return 1; + + spin_lock_irqsave(&ebu_lock, flags); + + cfg_base = (unsigned long) ltq_pci_mapped_cfg; + cfg_base |= (bus->number << LTQ_PCI_CFG_BUSNUM_SHF) | (devfn << + LTQ_PCI_CFG_FUNNUM_SHF) | (where & ~0x3); + + /* Perform access */ + if (access_type == PCI_ACCESS_WRITE) { + ltq_w32(swab32(*data), ((u32 *)cfg_base)); + } else { + *data = ltq_r32(((u32 *)(cfg_base))); + *data = swab32(*data); + } + wmb(); + + /* clean possible Master abort */ + cfg_base = (unsigned long) ltq_pci_mapped_cfg; + cfg_base |= (0x0 << LTQ_PCI_CFG_FUNNUM_SHF) + 4; + temp = ltq_r32(((u32 *)(cfg_base))); + temp = swab32(temp); + cfg_base = (unsigned long) ltq_pci_mapped_cfg; + cfg_base |= (0x68 << LTQ_PCI_CFG_FUNNUM_SHF) + 4; + ltq_w32(temp, ((u32 *)cfg_base)); + + spin_unlock_irqrestore(&ebu_lock, flags); + + if (((*data) == 0xffffffff) && (access_type == PCI_ACCESS_READ)) + return 1; + + return 0; +} + +int ltq_pci_read_config_dword(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + u32 data = 0; + + if (ltq_pci_config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) + return PCIBIOS_DEVICE_NOT_FOUND; + + if (size == 1) + *val = (data >> ((where & 3) << 3)) & 0xff; + else if (size == 2) + *val = (data >> ((where & 3) << 3)) & 0xffff; + else + *val = data; + + return PCIBIOS_SUCCESSFUL; +} + +int ltq_pci_write_config_dword(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + u32 data = 0; + + if (size == 4) { + data = val; + } else { + if (ltq_pci_config_access(PCI_ACCESS_READ, bus, + devfn, where, &data)) + return PCIBIOS_DEVICE_NOT_FOUND; + + if (size == 1) + data = (data & ~(0xff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + else if (size == 2) + data = (data & ~(0xffff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + } + + if (ltq_pci_config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data)) + return PCIBIOS_DEVICE_NOT_FOUND; + + return PCIBIOS_SUCCESSFUL; +} diff --git a/arch/mips/pci/ops-loongson2.c b/arch/mips/pci/ops-loongson2.c new file mode 100644 index 00000000000..24138bb0cbe --- /dev/null +++ b/arch/mips/pci/ops-loongson2.c @@ -0,0 +1,216 @@ +/* + * Copyright (C) 1999, 2000, 2004 MIPS Technologies, Inc. + * All rights reserved. + * Authors: Carsten Langgaard <carstenl@mips.com> + * Maciej W. Rozycki <macro@mips.com> + * + * Copyright (C) 2009 Lemote Inc. + * Author: Wu Zhangjin <wuzhangjin@gmail.com> + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + */ +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/export.h> + +#include <loongson.h> + +#ifdef CONFIG_CS5536 +#include <cs5536/cs5536_pci.h> +#include <cs5536/cs5536.h> +#endif + +#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_WRITE 1 + +#define CFG_SPACE_REG(offset) \ + (void *)CKSEG1ADDR(LOONGSON_PCICFG_BASE | (offset)) +#define ID_SEL_BEGIN 11 +#define MAX_DEV_NUM (31 - ID_SEL_BEGIN) + + +static int loongson_pcibios_config_access(unsigned char access_type, + struct pci_bus *bus, + unsigned int devfn, int where, + u32 *data) +{ + u32 busnum = bus->number; + u32 addr, type; + u32 dummy; + void *addrp; + int device = PCI_SLOT(devfn); + int function = PCI_FUNC(devfn); + int reg = where & ~3; + + if (busnum == 0) { + /* board-specific part,currently,only fuloong2f,yeeloong2f + * use CS5536, fuloong2e use via686b, gdium has no + * south bridge + */ +#ifdef CONFIG_CS5536 + /* cs5536_pci_conf_read4/write4() will call _rdmsr/_wrmsr() to + * access the regsters PCI_MSR_ADDR, PCI_MSR_DATA_LO, + * PCI_MSR_DATA_HI, which is bigger than PCI_MSR_CTRL, so, it + * will not go this branch, but the others. so, no calling dead + * loop here. + */ + if ((PCI_IDSEL_CS5536 == device) && (reg < PCI_MSR_CTRL)) { + switch (access_type) { + case PCI_ACCESS_READ: + *data = cs5536_pci_conf_read4(function, reg); + break; + case PCI_ACCESS_WRITE: + cs5536_pci_conf_write4(function, reg, *data); + break; + } + return 0; + } +#endif + /* Type 0 configuration for onboard PCI bus */ + if (device > MAX_DEV_NUM) + return -1; + + addr = (1 << (device + ID_SEL_BEGIN)) | (function << 8) | reg; + type = 0; + } else { + /* Type 1 configuration for offboard PCI bus */ + addr = (busnum << 16) | (device << 11) | (function << 8) | reg; + type = 0x10000; + } + + /* Clear aborts */ + LOONGSON_PCICMD |= LOONGSON_PCICMD_MABORT_CLR | \ + LOONGSON_PCICMD_MTABORT_CLR; + + LOONGSON_PCIMAP_CFG = (addr >> 16) | type; + + /* Flush Bonito register block */ + dummy = LOONGSON_PCIMAP_CFG; + mmiowb(); + + addrp = CFG_SPACE_REG(addr & 0xffff); + if (access_type == PCI_ACCESS_WRITE) + writel(cpu_to_le32(*data), addrp); + else + *data = le32_to_cpu(readl(addrp)); + + /* Detect Master/Target abort */ + if (LOONGSON_PCICMD & (LOONGSON_PCICMD_MABORT_CLR | + LOONGSON_PCICMD_MTABORT_CLR)) { + /* Error occurred */ + + /* Clear bits */ + LOONGSON_PCICMD |= (LOONGSON_PCICMD_MABORT_CLR | + LOONGSON_PCICMD_MTABORT_CLR); + + return -1; + } + + return 0; + +} + + +/* + * We can't address 8 and 16 bit words directly. Instead we have to + * read/write a 32bit word and mask/modify the data we actually want. + */ +static int loongson_pcibios_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + u32 data = 0; + + if ((size == 2) && (where & 1)) + return PCIBIOS_BAD_REGISTER_NUMBER; + else if ((size == 4) && (where & 3)) + return PCIBIOS_BAD_REGISTER_NUMBER; + + if (loongson_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, where, + &data)) + return -1; + + if (size == 1) + *val = (data >> ((where & 3) << 3)) & 0xff; + else if (size == 2) + *val = (data >> ((where & 3) << 3)) & 0xffff; + else + *val = data; + + return PCIBIOS_SUCCESSFUL; +} + +static int loongson_pcibios_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + u32 data = 0; + + if ((size == 2) && (where & 1)) + return PCIBIOS_BAD_REGISTER_NUMBER; + else if ((size == 4) && (where & 3)) + return PCIBIOS_BAD_REGISTER_NUMBER; + + if (size == 4) + data = val; + else { + if (loongson_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, + where, &data)) + return -1; + + if (size == 1) + data = (data & ~(0xff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + else if (size == 2) + data = (data & ~(0xffff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + } + + if (loongson_pcibios_config_access(PCI_ACCESS_WRITE, bus, devfn, where, + &data)) + return -1; + + return PCIBIOS_SUCCESSFUL; +} + +struct pci_ops loongson_pci_ops = { + .read = loongson_pcibios_read, + .write = loongson_pcibios_write +}; + +#ifdef CONFIG_CS5536 +DEFINE_RAW_SPINLOCK(msr_lock); + +void _rdmsr(u32 msr, u32 *hi, u32 *lo) +{ + struct pci_bus bus = { + .number = PCI_BUS_CS5536 + }; + u32 devfn = PCI_DEVFN(PCI_IDSEL_CS5536, 0); + unsigned long flags; + + raw_spin_lock_irqsave(&msr_lock, flags); + loongson_pcibios_write(&bus, devfn, PCI_MSR_ADDR, 4, msr); + loongson_pcibios_read(&bus, devfn, PCI_MSR_DATA_LO, 4, lo); + loongson_pcibios_read(&bus, devfn, PCI_MSR_DATA_HI, 4, hi); + raw_spin_unlock_irqrestore(&msr_lock, flags); +} +EXPORT_SYMBOL(_rdmsr); + +void _wrmsr(u32 msr, u32 hi, u32 lo) +{ + struct pci_bus bus = { + .number = PCI_BUS_CS5536 + }; + u32 devfn = PCI_DEVFN(PCI_IDSEL_CS5536, 0); + unsigned long flags; + + raw_spin_lock_irqsave(&msr_lock, flags); + loongson_pcibios_write(&bus, devfn, PCI_MSR_ADDR, 4, msr); + loongson_pcibios_write(&bus, devfn, PCI_MSR_DATA_LO, 4, lo); + loongson_pcibios_write(&bus, devfn, PCI_MSR_DATA_HI, 4, hi); + raw_spin_unlock_irqrestore(&msr_lock, flags); +} +EXPORT_SYMBOL(_wrmsr); +#endif diff --git a/arch/mips/pci/ops-loongson3.c b/arch/mips/pci/ops-loongson3.c new file mode 100644 index 00000000000..46ed541a3ec --- /dev/null +++ b/arch/mips/pci/ops-loongson3.c @@ -0,0 +1,101 @@ +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> + +#include <asm/mips-boards/bonito64.h> + +#include <loongson.h> + +#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_WRITE 1 + +#define HT1LO_PCICFG_BASE 0x1a000000 +#define HT1LO_PCICFG_BASE_TP1 0x1b000000 + +static int loongson3_pci_config_access(unsigned char access_type, + struct pci_bus *bus, unsigned int devfn, + int where, u32 *data) +{ + unsigned char busnum = bus->number; + u_int64_t addr, type; + void *addrp; + int device = PCI_SLOT(devfn); + int function = PCI_FUNC(devfn); + int reg = where & ~3; + + addr = (busnum << 16) | (device << 11) | (function << 8) | reg; + if (busnum == 0) { + if (device > 31) + return PCIBIOS_DEVICE_NOT_FOUND; + addrp = (void *)(TO_UNCAC(HT1LO_PCICFG_BASE) | (addr & 0xffff)); + type = 0; + + } else { + addrp = (void *)(TO_UNCAC(HT1LO_PCICFG_BASE_TP1) | (addr)); + type = 0x10000; + } + + if (access_type == PCI_ACCESS_WRITE) + writel(*data, addrp); + else { + *data = readl(addrp); + if (*data == 0xffffffff) { + *data = -1; + return PCIBIOS_DEVICE_NOT_FOUND; + } + } + return PCIBIOS_SUCCESSFUL; +} + +static int loongson3_pci_pcibios_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + u32 data = 0; + int ret = loongson3_pci_config_access(PCI_ACCESS_READ, + bus, devfn, where, &data); + + if (ret != PCIBIOS_SUCCESSFUL) + return ret; + + if (size == 1) + *val = (data >> ((where & 3) << 3)) & 0xff; + else if (size == 2) + *val = (data >> ((where & 3) << 3)) & 0xffff; + else + *val = data; + + return PCIBIOS_SUCCESSFUL; +} + +static int loongson3_pci_pcibios_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + u32 data = 0; + int ret; + + if (size == 4) + data = val; + else { + ret = loongson3_pci_config_access(PCI_ACCESS_READ, + bus, devfn, where, &data); + if (ret != PCIBIOS_SUCCESSFUL) + return ret; + + if (size == 1) + data = (data & ~(0xff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + else if (size == 2) + data = (data & ~(0xffff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + } + + ret = loongson3_pci_config_access(PCI_ACCESS_WRITE, + bus, devfn, where, &data); + + return ret; +} + +struct pci_ops loongson_pci_ops = { + .read = loongson3_pci_pcibios_read, + .write = loongson3_pci_pcibios_write +}; diff --git a/arch/mips/pci/ops-mace.c b/arch/mips/pci/ops-mace.c index 8008e31c5e8..6b5821febc3 100644 --- a/arch/mips/pci/ops-mace.c +++ b/arch/mips/pci/ops-mace.c @@ -6,7 +6,6 @@ * Copyright (C) 2000, 2001 Keith M Wesolowski */ #include <linux/kernel.h> -#include <linux/init.h> #include <linux/pci.h> #include <linux/types.h> #include <asm/pci.h> @@ -29,22 +28,24 @@ * 4 N/C */ -#define chkslot(_bus,_devfn) \ -do { \ - if ((_bus)->number > 0 || PCI_SLOT (_devfn) < 1 \ - || PCI_SLOT (_devfn) > 3) \ - return PCIBIOS_DEVICE_NOT_FOUND; \ -} while (0) +static inline int mkaddr(struct pci_bus *bus, unsigned int devfn, + unsigned int reg) +{ + return ((bus->number & 0xff) << 16) | + ((devfn & 0xff) << 8) | + (reg & 0xfc); +} -#define mkaddr(_devfn, _reg) \ -((((_devfn) & 0xffUL) << 8) | ((_reg) & 0xfcUL)) static int mace_pci_read_config(struct pci_bus *bus, unsigned int devfn, int reg, int size, u32 *val) { - chkslot(bus, devfn); - mace->pci.config_addr = mkaddr(devfn, reg); + u32 control = mace->pci.control; + + /* disable master aborts interrupts during config read */ + mace->pci.control = control & ~MACEPCI_CONTROL_MAR_INT; + mace->pci.config_addr = mkaddr(bus, devfn, reg); switch (size) { case 1: *val = mace->pci.config_data.b[(reg & 3) ^ 3]; @@ -56,6 +57,16 @@ mace_pci_read_config(struct pci_bus *bus, unsigned int devfn, *val = mace->pci.config_data.l; break; } + /* ack possible master abort */ + mace->pci.error &= ~MACEPCI_ERROR_MASTER_ABORT; + mace->pci.control = control; + /* + * someone forgot to set the ultra bit for the onboard + * scsi chips; we fake it here + */ + if (bus->number == 0 && reg == 0x40 && size == 4 && + (devfn == (1 << 3) || devfn == (2 << 3))) + *val |= 0x1000; DPRINTK("read%d: reg=%08x,val=%02x\n", size * 8, reg, *val); @@ -66,8 +77,7 @@ static int mace_pci_write_config(struct pci_bus *bus, unsigned int devfn, int reg, int size, u32 val) { - chkslot(bus, devfn); - mace->pci.config_addr = mkaddr(devfn, reg); + mace->pci.config_addr = mkaddr(bus, devfn, reg); switch (size) { case 1: mace->pci.config_data.b[(reg & 3) ^ 3] = val; diff --git a/arch/mips/pci/ops-marvell.c b/arch/mips/pci/ops-marvell.c deleted file mode 100644 index 1ac5c59199d..00000000000 --- a/arch/mips/pci/ops-marvell.c +++ /dev/null @@ -1,93 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2003, 2004 Ralf Baechle (ralf@linux-mips.org) - */ -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/pci.h> - -#include <asm/marvell.h> - -static int mv_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * val) -{ - struct mv_pci_controller *mvbc = bus->sysdata; - unsigned long address_reg, data_reg; - u32 address; - - address_reg = mvbc->config_addr; - data_reg = mvbc->config_vreg; - - /* Accessing device 31 crashes those Marvells. Since years. - Will they ever make sane controllers ... */ - if (PCI_SLOT(devfn) == 31) - return PCIBIOS_DEVICE_NOT_FOUND; - - address = (bus->number << 16) | (devfn << 8) | - (where & 0xfc) | 0x80000000; - - /* start the configuration cycle */ - MV_WRITE(address_reg, address); - - switch (size) { - case 1: - *val = MV_READ_8(data_reg + (where & 0x3)); - break; - - case 2: - *val = MV_READ_16(data_reg + (where & 0x3)); - break; - - case 4: - *val = MV_READ(data_reg); - break; - } - - return PCIBIOS_SUCCESSFUL; -} - -static int mv_write_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - struct mv_pci_controller *mvbc = bus->sysdata; - unsigned long address_reg, data_reg; - u32 address; - - address_reg = mvbc->config_addr; - data_reg = mvbc->config_vreg; - - /* Accessing device 31 crashes those Marvells. Since years. - Will they ever make sane controllers ... */ - if (PCI_SLOT(devfn) == 31) - return PCIBIOS_DEVICE_NOT_FOUND; - - address = (bus->number << 16) | (devfn << 8) | - (where & 0xfc) | 0x80000000; - - /* start the configuration cycle */ - MV_WRITE(address_reg, address); - - switch (size) { - case 1: - MV_WRITE_8(data_reg + (where & 0x3), val); - break; - - case 2: - MV_WRITE_16(data_reg + (where & 0x3), val); - break; - - case 4: - MV_WRITE(data_reg, val); - break; - } - - return PCIBIOS_SUCCESSFUL; -} - -struct pci_ops mv_pci_ops = { - .read = mv_read_config, - .write = mv_write_config -}; diff --git a/arch/mips/pci/ops-msc.c b/arch/mips/pci/ops-msc.c index 5d9fbb0f467..dbbf3657896 100644 --- a/arch/mips/pci/ops-msc.c +++ b/arch/mips/pci/ops-msc.c @@ -1,8 +1,8 @@ /* - * Copyright (C) 1999, 2000, 2004, 2005 MIPS Technologies, Inc. + * Copyright (C) 1999, 2000, 2004, 2005 MIPS Technologies, Inc. * All rights reserved. * Authors: Carsten Langgaard <carstenl@mips.com> - * Maciej W. Rozycki <macro@mips.com> + * Maciej W. Rozycki <macro@mips.com> * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org) * * This program is free software; you can distribute it and/or modify it @@ -24,25 +24,24 @@ #include <linux/types.h> #include <linux/pci.h> #include <linux/kernel.h> -#include <linux/init.h> #include <asm/mips-boards/msc01_pci.h> -#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_READ 0 #define PCI_ACCESS_WRITE 1 /* * PCI configuration cycle AD bus definition */ /* Type 0 */ -#define PCI_CFG_TYPE0_REG_SHF 0 -#define PCI_CFG_TYPE0_FUNC_SHF 8 +#define PCI_CFG_TYPE0_REG_SHF 0 +#define PCI_CFG_TYPE0_FUNC_SHF 8 /* Type 1 */ -#define PCI_CFG_TYPE1_REG_SHF 0 -#define PCI_CFG_TYPE1_FUNC_SHF 8 -#define PCI_CFG_TYPE1_DEV_SHF 11 -#define PCI_CFG_TYPE1_BUS_SHF 16 +#define PCI_CFG_TYPE1_REG_SHF 0 +#define PCI_CFG_TYPE1_FUNC_SHF 8 +#define PCI_CFG_TYPE1_DEV_SHF 11 +#define PCI_CFG_TYPE1_BUS_SHF 16 static int msc_pcibios_config_access(unsigned char access_type, struct pci_bus *bus, unsigned int devfn, int where, u32 * data) @@ -97,7 +96,7 @@ static int msc_pcibios_read(struct pci_bus *bus, unsigned int devfn, return PCIBIOS_BAD_REGISTER_NUMBER; if (msc_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, where, - &data)) + &data)) return -1; if (size == 1) @@ -124,7 +123,7 @@ static int msc_pcibios_write(struct pci_bus *bus, unsigned int devfn, data = val; else { if (msc_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, - where, &data)) + where, &data)) return -1; if (size == 1) diff --git a/arch/mips/pci/ops-nile4.c b/arch/mips/pci/ops-nile4.c index a8d38dc8c50..a1a7c9f4096 100644 --- a/arch/mips/pci/ops-nile4.c +++ b/arch/mips/pci/ops-nile4.c @@ -1,13 +1,11 @@ #include <linux/kernel.h> -#include <linux/init.h> #include <linux/pci.h> #include <asm/bootinfo.h> #include <asm/lasat/lasat.h> -#include <asm/gt64120.h> #include <asm/nile4.h> -#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_READ 0 #define PCI_ACCESS_WRITE 1 #define LO(reg) (reg / 4) @@ -18,7 +16,7 @@ volatile unsigned long *const vrc_pciregs = (void *) Vrc5074_BASE; static DEFINE_SPINLOCK(nile4_pci_lock); static int nile4_pcibios_config_access(unsigned char access_type, - struct pci_bus *bus, unsigned int devfn, int where, u32 * val) + struct pci_bus *bus, unsigned int devfn, int where, u32 *val) { unsigned char busnum = bus->number; u32 adr, mask, err; @@ -76,7 +74,7 @@ static int nile4_pcibios_config_access(unsigned char access_type, } static int nile4_pcibios_read(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * val) + int where, int size, u32 *val) { unsigned long flags; u32 data = 0; @@ -119,7 +117,7 @@ static int nile4_pcibios_write(struct pci_bus *bus, unsigned int devfn, spin_lock_irqsave(&nile4_pci_lock, flags); err = nile4_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, where, - &data); + &data); spin_unlock_irqrestore(&nile4_pci_lock, flags); if (err) diff --git a/arch/mips/pci/ops-pmcmsp.c b/arch/mips/pci/ops-pmcmsp.c new file mode 100644 index 00000000000..50034f985be --- /dev/null +++ b/arch/mips/pci/ops-pmcmsp.c @@ -0,0 +1,985 @@ +/* + * PMC-Sierra MSP board specific pci_ops + * + * Copyright 2001 MontaVista Software Inc. + * Copyright 2005-2007 PMC-Sierra, Inc + * + * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net + * + * Much of the code is derived from the original DDB5074 port by + * Geert Uytterhoeven <geert@linux-m68k.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#define PCI_COUNTERS 1 + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/interrupt.h> + +#if defined(CONFIG_PROC_FS) && defined(PCI_COUNTERS) +#include <linux/proc_fs.h> +#include <linux/seq_file.h> +#endif /* CONFIG_PROC_FS && PCI_COUNTERS */ + +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/byteorder.h> +#if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL) +#include <asm/mipsmtregs.h> +#endif + +#include <msp_prom.h> +#include <msp_cic_int.h> +#include <msp_pci.h> +#include <msp_regs.h> +#include <msp_regops.h> + +#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_WRITE 1 + +#if defined(CONFIG_PROC_FS) && defined(PCI_COUNTERS) +static char proc_init; +extern struct proc_dir_entry *proc_bus_pci_dir; +unsigned int pci_int_count[32]; + +static void pci_proc_init(void); + +/***************************************************************************** + * + * FUNCTION: show_msp_pci_counts + * _________________________________________________________________________ + * + * DESCRIPTION: Prints the count of how many times each PCI + * interrupt has asserted. Can be invoked by the + * /proc filesystem. + * + * INPUTS: m - synthetic file construction data + * v - iterator + * + * RETURNS: 0 or error + * + ****************************************************************************/ +static int show_msp_pci_counts(struct seq_file *m, void *v) +{ + int i; + unsigned int intcount, total = 0; + + for (i = 0; i < 32; ++i) { + intcount = pci_int_count[i]; + if (intcount != 0) { + seq_printf(m, "[%d] = %u\n", i, intcount); + total += intcount; + } + } + + seq_printf(m, "total = %u\n", total); + return 0; +} + +static int msp_pci_rd_cnt_open(struct inode *inode, struct file *file) +{ + return single_open(file, show_msp_pci_counts, NULL); +} + +static const struct file_operations msp_pci_rd_cnt_fops = { + .open = msp_pci_rd_cnt_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/***************************************************************************** + * + * FUNCTION: gen_pci_cfg_wr_show + * _________________________________________________________________________ + * + * DESCRIPTION: Generates a configuration write cycle for debug purposes. + * The IDSEL line asserted and location and data written are + * immaterial. Just want to be able to prove that a + * configuration write can be correctly generated on the + * PCI bus. Intent is that this function by invocable from + * the /proc filesystem. + * + * INPUTS: m - synthetic file construction data + * v - iterator + * + * RETURNS: 0 or error + * + ****************************************************************************/ +static int gen_pci_cfg_wr_show(struct seq_file *m, void *v) +{ + unsigned char where = 0; /* Write to static Device/Vendor ID */ + unsigned char bus_num = 0; /* Bus 0 */ + unsigned char dev_fn = 0xF; /* Arbitrary device number */ + u32 wr_data = 0xFF00AA00; /* Arbitrary data */ + struct msp_pci_regs *preg = (void *)PCI_BASE_REG; + unsigned long value; + int intr; + + seq_puts(m, "PMC MSP PCI: Beginning\n"); + + if (proc_init == 0) { + pci_proc_init(); + proc_init = ~0; + } + + seq_puts(m, "PMC MSP PCI: Before Cfg Wr\n"); + + /* + * Generate PCI Configuration Write Cycle + */ + + /* Clear cause register bits */ + preg->if_status = ~(BPCI_IFSTATUS_BC0F | BPCI_IFSTATUS_BC1F); + + /* Setup address that is to appear on PCI bus */ + preg->config_addr = BPCI_CFGADDR_ENABLE | + (bus_num << BPCI_CFGADDR_BUSNUM_SHF) | + (dev_fn << BPCI_CFGADDR_FUNCTNUM_SHF) | + (where & 0xFC); + + value = cpu_to_le32(wr_data); + + /* Launch the PCI configuration write cycle */ + *PCI_CONFIG_SPACE_REG = value; + + /* + * Check if the PCI configuration cycle (rd or wr) succeeded, by + * checking the status bits for errors like master or target abort. + */ + intr = preg->if_status; + + seq_puts(m, "PMC MSP PCI: After Cfg Wr\n"); + return 0; +} + +static int gen_pci_cfg_wr_open(struct inode *inode, struct file *file) +{ + return single_open(file, gen_pci_cfg_wr_show, NULL); +} + +static const struct file_operations gen_pci_cfg_wr_fops = { + .open = gen_pci_cfg_wr_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +/***************************************************************************** + * + * FUNCTION: pci_proc_init + * _________________________________________________________________________ + * + * DESCRIPTION: Create entries in the /proc filesystem for debug access. + * + * INPUTS: none + * + * OUTPUTS: none + * + * RETURNS: none + * + ****************************************************************************/ +static void pci_proc_init(void) +{ + proc_create("pmc_msp_pci_rd_cnt", 0, NULL, &msp_pci_rd_cnt_fops); + proc_create("pmc_msp_pci_cfg_wr", 0, NULL, &gen_pci_cfg_wr_fops); +} +#endif /* CONFIG_PROC_FS && PCI_COUNTERS */ + +static DEFINE_SPINLOCK(bpci_lock); + +/***************************************************************************** + * + * STRUCT: pci_io_resource + * _________________________________________________________________________ + * + * DESCRIPTION: Defines the address range that pciauto() will use to + * assign to the I/O BARs of PCI devices. + * + * Use the start and end addresses of the MSP7120 PCI Host + * Controller I/O space, in the form that they appear on the + * PCI bus AFTER MSP7120 has performed address translation. + * + * For I/O accesses, MSP7120 ignores OATRAN and maps I/O + * accesses into the bottom 0xFFF region of address space, + * so that is the range to put into the pci_io_resource + * struct. + * + * In MSP4200, the start address was 0x04 instead of the + * expected 0x00. Will just assume there was a good reason + * for this! + * + * NOTES: Linux, by default, will assign I/O space to the lowest + * region of address space. Since MSP7120 and Linux, + * by default, have no offset in between how they map, the + * io_offset element of pci_controller struct should be set + * to zero. + * ELEMENTS: + * name - String used for a meaningful name. + * + * start - Start address of MSP7120's I/O space, as MSP7120 presents + * the address on the PCI bus. + * + * end - End address of MSP7120's I/O space, as MSP7120 presents + * the address on the PCI bus. + * + * flags - Attributes indicating the type of resource. In this case, + * indicate I/O space. + * + ****************************************************************************/ +static struct resource pci_io_resource = { + .name = "pci IO space", + .start = 0x04, + .end = 0x0FFF, + .flags = IORESOURCE_IO /* I/O space */ +}; + +/***************************************************************************** + * + * STRUCT: pci_mem_resource + * _________________________________________________________________________ + * + * DESCRIPTION: Defines the address range that pciauto() will use to + * assign to the memory BARs of PCI devices. + * + * The .start and .end values are dependent upon how address + * translation is performed by the OATRAN regiser. + * + * The values to use for .start and .end are the values + * in the form they appear on the PCI bus AFTER MSP7120 has + * performed OATRAN address translation. + * + * ELEMENTS: + * name - String used for a meaningful name. + * + * start - Start address of MSP7120's memory space, as MSP7120 presents + * the address on the PCI bus. + * + * end - End address of MSP7120's memory space, as MSP7120 presents + * the address on the PCI bus. + * + * flags - Attributes indicating the type of resource. In this case, + * indicate memory space. + * + ****************************************************************************/ +static struct resource pci_mem_resource = { + .name = "pci memory space", + .start = MSP_PCI_SPACE_BASE, + .end = MSP_PCI_SPACE_END, + .flags = IORESOURCE_MEM /* memory space */ +}; + +/***************************************************************************** + * + * FUNCTION: bpci_interrupt + * _________________________________________________________________________ + * + * DESCRIPTION: PCI status interrupt handler. Updates the count of how + * many times each status bit has been set, then clears + * the status bits. If the appropriate macros are defined, + * these counts can be viewed via the /proc filesystem. + * + * INPUTS: irq - unused + * dev_id - unused + * pt_regs - unused + * + * OUTPUTS: none + * + * RETURNS: PCIBIOS_SUCCESSFUL - success + * + ****************************************************************************/ +static irqreturn_t bpci_interrupt(int irq, void *dev_id) +{ + struct msp_pci_regs *preg = (void *)PCI_BASE_REG; + unsigned int stat = preg->if_status; + +#if defined(CONFIG_PROC_FS) && defined(PCI_COUNTERS) + int i; + for (i = 0; i < 32; ++i) { + if ((1 << i) & stat) + ++pci_int_count[i]; + } +#endif /* PROC_FS && PCI_COUNTERS */ + + /* printk("PCI ISR: Status=%08X\n", stat); */ + + /* write to clear all asserted interrupts */ + preg->if_status = stat; + + return IRQ_HANDLED; +} + +/***************************************************************************** + * + * FUNCTION: msp_pcibios_config_access + * _________________________________________________________________________ + * + * DESCRIPTION: Performs a PCI configuration access (rd or wr), then + * checks that the access succeeded by querying MSP7120's + * PCI status bits. + * + * INPUTS: + * access_type - kind of PCI configuration cycle to perform + * (read or write). Legal values are + * PCI_ACCESS_WRITE and PCI_ACCESS_READ. + * + * bus - pointer to the bus number of the device to + * be targeted for the configuration cycle. + * The only element of the pci_bus structure + * used is bus->number. This argument determines + * if the configuration access will be Type 0 or + * Type 1. Since MSP7120 assumes itself to be the + * PCI Host, any non-zero bus->number generates + * a Type 1 access. + * + * devfn - this is an 8-bit field. The lower three bits + * specify the function number of the device to + * be targeted for the configuration cycle, with + * all three-bit combinations being legal. The + * upper five bits specify the device number, + * with legal values being 10 to 31. + * + * where - address within the Configuration Header + * space to access. + * + * data - for write accesses, contains the data to + * write. + * + * OUTPUTS: + * data - for read accesses, contains the value read. + * + * RETURNS: PCIBIOS_SUCCESSFUL - success + * -1 - access failure + * + ****************************************************************************/ +int msp_pcibios_config_access(unsigned char access_type, + struct pci_bus *bus, + unsigned int devfn, + unsigned char where, + u32 *data) +{ + struct msp_pci_regs *preg = (void *)PCI_BASE_REG; + unsigned char bus_num = bus->number; + unsigned char dev_fn = (unsigned char)devfn; + unsigned long flags; + unsigned long intr; + unsigned long value; + static char pciirqflag; + int ret; +#if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL) + unsigned int vpe_status; +#endif + +#if defined(CONFIG_PROC_FS) && defined(PCI_COUNTERS) + if (proc_init == 0) { + pci_proc_init(); + proc_init = ~0; + } +#endif /* CONFIG_PROC_FS && PCI_COUNTERS */ + + /* + * Just the first time this function invokes, allocate + * an interrupt line for PCI host status interrupts. The + * allocation assigns an interrupt handler to the interrupt. + */ + if (pciirqflag == 0) { + ret = request_irq(MSP_INT_PCI,/* Hardcoded internal MSP7120 wiring */ + bpci_interrupt, + IRQF_SHARED, + "PMC MSP PCI Host", + preg); + if (ret != 0) + return ret; + pciirqflag = ~0; + } + +#if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL) + local_irq_save(flags); + vpe_status = dvpe(); +#else + spin_lock_irqsave(&bpci_lock, flags); +#endif + + /* + * Clear PCI cause register bits. + * + * In Polo, the PCI Host had a dedicated DMA called the + * Block Copy (not to be confused with the general purpose Block + * Copy Engine block). There appear to have been special interrupts + * for this Block Copy, called Block Copy 0 Fault (BC0F) and + * Block Copy 1 Fault (BC1F). MSP4200 and MSP7120 don't have this + * dedicated Block Copy block, so these two interrupts are now + * marked reserved. In case the Block Copy is resurrected in a + * future design, maintain the code that treats these two interrupts + * specially. + * + * Write to clear all interrupts in the PCI status register, aside + * from BC0F and BC1F. + */ + preg->if_status = ~(BPCI_IFSTATUS_BC0F | BPCI_IFSTATUS_BC1F); + + /* Setup address that is to appear on PCI bus */ + preg->config_addr = BPCI_CFGADDR_ENABLE | + (bus_num << BPCI_CFGADDR_BUSNUM_SHF) | + (dev_fn << BPCI_CFGADDR_FUNCTNUM_SHF) | + (where & 0xFC); + + /* IF access is a PCI configuration write */ + if (access_type == PCI_ACCESS_WRITE) { + value = cpu_to_le32(*data); + *PCI_CONFIG_SPACE_REG = value; + } else { + /* ELSE access is a PCI configuration read */ + value = le32_to_cpu(*PCI_CONFIG_SPACE_REG); + *data = value; + } + + /* + * Check if the PCI configuration cycle (rd or wr) succeeded, by + * checking the status bits for errors like master or target abort. + */ + intr = preg->if_status; + + /* Clear config access */ + preg->config_addr = 0; + + /* IF error occurred */ + if (intr & ~(BPCI_IFSTATUS_BC0F | BPCI_IFSTATUS_BC1F)) { + /* Clear status bits */ + preg->if_status = ~(BPCI_IFSTATUS_BC0F | BPCI_IFSTATUS_BC1F); + +#if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL) + evpe(vpe_status); + local_irq_restore(flags); +#else + spin_unlock_irqrestore(&bpci_lock, flags); +#endif + + return -1; + } + +#if defined(CONFIG_PMC_MSP7120_GW) || defined(CONFIG_PMC_MSP7120_EVAL) + evpe(vpe_status); + local_irq_restore(flags); +#else + spin_unlock_irqrestore(&bpci_lock, flags); +#endif + + return PCIBIOS_SUCCESSFUL; +} + +/***************************************************************************** + * + * FUNCTION: msp_pcibios_read_config_byte + * _________________________________________________________________________ + * + * DESCRIPTION: Read a byte from PCI configuration address spac + * Since the hardware can't address 8 bit chunks + * directly, read a 32-bit chunk, then mask off extraneous + * bits. + * + * INPUTS bus - structure containing attributes for the PCI bus + * that the read is destined for. + * devfn - device/function combination that the read is + * destined for. + * where - register within the Configuration Header space + * to access. + * + * OUTPUTS val - read data + * + * RETURNS: PCIBIOS_SUCCESSFUL - success + * -1 - read access failure + * + ****************************************************************************/ +static int +msp_pcibios_read_config_byte(struct pci_bus *bus, + unsigned int devfn, + int where, + u32 *val) +{ + u32 data = 0; + + /* + * If the config access did not complete normally (e.g., underwent + * master abort) do the PCI compliant thing, which is to supply an + * all ones value. + */ + if (msp_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, + where, &data)) { + *val = 0xFFFFFFFF; + return -1; + } + + *val = (data >> ((where & 3) << 3)) & 0x0ff; + + return PCIBIOS_SUCCESSFUL; +} + +/***************************************************************************** + * + * FUNCTION: msp_pcibios_read_config_word + * _________________________________________________________________________ + * + * DESCRIPTION: Read a word (16 bits) from PCI configuration address space. + * Since the hardware can't address 16 bit chunks + * directly, read a 32-bit chunk, then mask off extraneous + * bits. + * + * INPUTS bus - structure containing attributes for the PCI bus + * that the read is destined for. + * devfn - device/function combination that the read is + * destined for. + * where - register within the Configuration Header space + * to access. + * + * OUTPUTS val - read data + * + * RETURNS: PCIBIOS_SUCCESSFUL - success + * PCIBIOS_BAD_REGISTER_NUMBER - bad register address + * -1 - read access failure + * + ****************************************************************************/ +static int +msp_pcibios_read_config_word(struct pci_bus *bus, + unsigned int devfn, + int where, + u32 *val) +{ + u32 data = 0; + + /* if (where & 1) */ /* Commented out non-compliant code. + * Should allow word access to configuration + * registers, with only exception being when + * the word access would wrap around into + * the next dword. + */ + if ((where & 3) == 3) { + *val = 0xFFFFFFFF; + return PCIBIOS_BAD_REGISTER_NUMBER; + } + + /* + * If the config access did not complete normally (e.g., underwent + * master abort) do the PCI compliant thing, which is to supply an + * all ones value. + */ + if (msp_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, + where, &data)) { + *val = 0xFFFFFFFF; + return -1; + } + + *val = (data >> ((where & 3) << 3)) & 0x0ffff; + + return PCIBIOS_SUCCESSFUL; +} + +/***************************************************************************** + * + * FUNCTION: msp_pcibios_read_config_dword + * _________________________________________________________________________ + * + * DESCRIPTION: Read a double word (32 bits) from PCI configuration + * address space. + * + * INPUTS bus - structure containing attributes for the PCI bus + * that the read is destined for. + * devfn - device/function combination that the read is + * destined for. + * where - register within the Configuration Header space + * to access. + * + * OUTPUTS val - read data + * + * RETURNS: PCIBIOS_SUCCESSFUL - success + * PCIBIOS_BAD_REGISTER_NUMBER - bad register address + * -1 - read access failure + * + ****************************************************************************/ +static int +msp_pcibios_read_config_dword(struct pci_bus *bus, + unsigned int devfn, + int where, + u32 *val) +{ + u32 data = 0; + + /* Address must be dword aligned. */ + if (where & 3) { + *val = 0xFFFFFFFF; + return PCIBIOS_BAD_REGISTER_NUMBER; + } + + /* + * If the config access did not complete normally (e.g., underwent + * master abort) do the PCI compliant thing, which is to supply an + * all ones value. + */ + if (msp_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, + where, &data)) { + *val = 0xFFFFFFFF; + return -1; + } + + *val = data; + + return PCIBIOS_SUCCESSFUL; +} + +/***************************************************************************** + * + * FUNCTION: msp_pcibios_write_config_byte + * _________________________________________________________________________ + * + * DESCRIPTION: Write a byte to PCI configuration address space. + * Since the hardware can't address 8 bit chunks + * directly, a read-modify-write is performed. + * + * INPUTS bus - structure containing attributes for the PCI bus + * that the write is destined for. + * devfn - device/function combination that the write is + * destined for. + * where - register within the Configuration Header space + * to access. + * val - value to write + * + * OUTPUTS none + * + * RETURNS: PCIBIOS_SUCCESSFUL - success + * -1 - write access failure + * + ****************************************************************************/ +static int +msp_pcibios_write_config_byte(struct pci_bus *bus, + unsigned int devfn, + int where, + u8 val) +{ + u32 data = 0; + + /* read config space */ + if (msp_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, + where, &data)) + return -1; + + /* modify the byte within the dword */ + data = (data & ~(0xff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + + /* write back the full dword */ + if (msp_pcibios_config_access(PCI_ACCESS_WRITE, bus, devfn, + where, &data)) + return -1; + + return PCIBIOS_SUCCESSFUL; +} + +/***************************************************************************** + * + * FUNCTION: msp_pcibios_write_config_word + * _________________________________________________________________________ + * + * DESCRIPTION: Write a word (16-bits) to PCI configuration address space. + * Since the hardware can't address 16 bit chunks + * directly, a read-modify-write is performed. + * + * INPUTS bus - structure containing attributes for the PCI bus + * that the write is destined for. + * devfn - device/function combination that the write is + * destined for. + * where - register within the Configuration Header space + * to access. + * val - value to write + * + * OUTPUTS none + * + * RETURNS: PCIBIOS_SUCCESSFUL - success + * PCIBIOS_BAD_REGISTER_NUMBER - bad register address + * -1 - write access failure + * + ****************************************************************************/ +static int +msp_pcibios_write_config_word(struct pci_bus *bus, + unsigned int devfn, + int where, + u16 val) +{ + u32 data = 0; + + /* Fixed non-compliance: if (where & 1) */ + if ((where & 3) == 3) + return PCIBIOS_BAD_REGISTER_NUMBER; + + /* read config space */ + if (msp_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, + where, &data)) + return -1; + + /* modify the word within the dword */ + data = (data & ~(0xffff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + + /* write back the full dword */ + if (msp_pcibios_config_access(PCI_ACCESS_WRITE, bus, devfn, + where, &data)) + return -1; + + return PCIBIOS_SUCCESSFUL; +} + +/***************************************************************************** + * + * FUNCTION: msp_pcibios_write_config_dword + * _________________________________________________________________________ + * + * DESCRIPTION: Write a double word (32-bits) to PCI configuration address + * space. + * + * INPUTS bus - structure containing attributes for the PCI bus + * that the write is destined for. + * devfn - device/function combination that the write is + * destined for. + * where - register within the Configuration Header space + * to access. + * val - value to write + * + * OUTPUTS none + * + * RETURNS: PCIBIOS_SUCCESSFUL - success + * PCIBIOS_BAD_REGISTER_NUMBER - bad register address + * -1 - write access failure + * + ****************************************************************************/ +static int +msp_pcibios_write_config_dword(struct pci_bus *bus, + unsigned int devfn, + int where, + u32 val) +{ + /* check that address is dword aligned */ + if (where & 3) + return PCIBIOS_BAD_REGISTER_NUMBER; + + /* perform write */ + if (msp_pcibios_config_access(PCI_ACCESS_WRITE, bus, devfn, + where, &val)) + return -1; + + return PCIBIOS_SUCCESSFUL; +} + +/***************************************************************************** + * + * FUNCTION: msp_pcibios_read_config + * _________________________________________________________________________ + * + * DESCRIPTION: Interface the PCI configuration read request with + * the appropriate function, based on how many bytes + * the read request is. + * + * INPUTS bus - structure containing attributes for the PCI bus + * that the write is destined for. + * devfn - device/function combination that the write is + * destined for. + * where - register within the Configuration Header space + * to access. + * size - in units of bytes, should be 1, 2, or 4. + * + * OUTPUTS val - value read, with any extraneous bytes masked + * to zero. + * + * RETURNS: PCIBIOS_SUCCESSFUL - success + * -1 - failure + * + ****************************************************************************/ +int +msp_pcibios_read_config(struct pci_bus *bus, + unsigned int devfn, + int where, + int size, + u32 *val) +{ + if (size == 1) { + if (msp_pcibios_read_config_byte(bus, devfn, where, val)) { + return -1; + } + } else if (size == 2) { + if (msp_pcibios_read_config_word(bus, devfn, where, val)) { + return -1; + } + } else if (size == 4) { + if (msp_pcibios_read_config_dword(bus, devfn, where, val)) { + return -1; + } + } else { + *val = 0xFFFFFFFF; + return -1; + } + + return PCIBIOS_SUCCESSFUL; +} + +/***************************************************************************** + * + * FUNCTION: msp_pcibios_write_config + * _________________________________________________________________________ + * + * DESCRIPTION: Interface the PCI configuration write request with + * the appropriate function, based on how many bytes + * the read request is. + * + * INPUTS bus - structure containing attributes for the PCI bus + * that the write is destined for. + * devfn - device/function combination that the write is + * destined for. + * where - register within the Configuration Header space + * to access. + * size - in units of bytes, should be 1, 2, or 4. + * val - value to write + * + * OUTPUTS: none + * + * RETURNS: PCIBIOS_SUCCESSFUL - success + * -1 - failure + * + ****************************************************************************/ +int +msp_pcibios_write_config(struct pci_bus *bus, + unsigned int devfn, + int where, + int size, + u32 val) +{ + if (size == 1) { + if (msp_pcibios_write_config_byte(bus, devfn, + where, (u8)(0xFF & val))) { + return -1; + } + } else if (size == 2) { + if (msp_pcibios_write_config_word(bus, devfn, + where, (u16)(0xFFFF & val))) { + return -1; + } + } else if (size == 4) { + if (msp_pcibios_write_config_dword(bus, devfn, where, val)) { + return -1; + } + } else { + return -1; + } + + return PCIBIOS_SUCCESSFUL; +} + +/***************************************************************************** + * + * STRUCTURE: msp_pci_ops + * _________________________________________________________________________ + * + * DESCRIPTION: structure to abstract the hardware specific PCI + * configuration accesses. + * + * ELEMENTS: + * read - function for Linux to generate PCI Configuration reads. + * write - function for Linux to generate PCI Configuration writes. + * + ****************************************************************************/ +struct pci_ops msp_pci_ops = { + .read = msp_pcibios_read_config, + .write = msp_pcibios_write_config +}; + +/***************************************************************************** + * + * STRUCTURE: msp_pci_controller + * _________________________________________________________________________ + * + * Describes the attributes of the MSP7120 PCI Host Controller + * + * ELEMENTS: + * pci_ops - abstracts the hardware specific PCI configuration + * accesses. + * + * mem_resource - address range pciauto() uses to assign to PCI device + * memory BARs. + * + * mem_offset - offset between how MSP7120 outbound PCI memory + * transaction addresses appear on the PCI bus and how Linux + * wants to configure memory BARs of the PCI devices. + * MSP7120 does nothing funky, so just set to zero. + * + * io_resource - address range pciauto() uses to assign to PCI device + * I/O BARs. + * + * io_offset - offset between how MSP7120 outbound PCI I/O + * transaction addresses appear on the PCI bus and how + * Linux defaults to configure I/O BARs of the PCI devices. + * MSP7120 maps outbound I/O accesses into the bottom + * bottom 4K of PCI address space (and ignores OATRAN). + * Since the Linux default is to configure I/O BARs to the + * bottom 4K, no special offset is needed. Just set to zero. + * + ****************************************************************************/ +static struct pci_controller msp_pci_controller = { + .pci_ops = &msp_pci_ops, + .mem_resource = &pci_mem_resource, + .mem_offset = 0, + .io_map_base = MSP_PCI_IOSPACE_BASE, + .io_resource = &pci_io_resource, + .io_offset = 0 +}; + +/***************************************************************************** + * + * FUNCTION: msp_pci_init + * _________________________________________________________________________ + * + * DESCRIPTION: Initialize the PCI Host Controller and register it with + * Linux so Linux can seize control of the PCI bus. + * + ****************************************************************************/ +void __init msp_pci_init(void) +{ + struct msp_pci_regs *preg = (void *)PCI_BASE_REG; + u32 id; + + /* Extract Device ID */ + id = read_reg32(PCI_JTAG_DEVID_REG, 0xFFFF) >> 12; + + /* Check if JTAG ID identifies MSP7120 */ + if (!MSP_HAS_PCI(id)) { + printk(KERN_WARNING "PCI: No PCI; id reads as %x\n", id); + goto no_pci; + } + + /* + * Enable flushing of the PCI-SDRAM queue upon a read + * of the SDRAM's Memory Configuration Register. + */ + *(unsigned long *)QFLUSH_REG_1 = 3; + + /* Configure PCI Host Controller. */ + preg->if_status = ~0; /* Clear cause register bits */ + preg->config_addr = 0; /* Clear config access */ + preg->oatran = MSP_PCI_OATRAN; /* PCI outbound addr translation */ + preg->if_mask = 0xF8BF87C0; /* Enable all PCI status interrupts */ + + /* configure so inb(), outb(), and family are functional */ + set_io_port_base(MSP_PCI_IOSPACE_BASE); + + /* Tell Linux the details of the MSP7120 PCI Host Controller */ + register_pci_controller(&msp_pci_controller); + + return; + +no_pci: + /* Disable PCI channel */ + printk(KERN_WARNING "PCI: no host PCI bus detected\n"); +} diff --git a/arch/mips/pci/ops-pnx8550.c b/arch/mips/pci/ops-pnx8550.c deleted file mode 100644 index 454b65cc335..00000000000 --- a/arch/mips/pci/ops-pnx8550.c +++ /dev/null @@ -1,284 +0,0 @@ -/* - * - * BRIEF MODULE DESCRIPTION - * - * 2.6 port, Embedded Alley Solutions, Inc - * - * Based on: - * Author: source@mvista.com - * - * This program is free software; you can distribute it and/or modify it - * under the terms of the GNU General Public License (Version 2) as - * published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/vmalloc.h> -#include <linux/delay.h> - -#include <asm/mach-pnx8550/pci.h> -#include <asm/mach-pnx8550/glb.h> -#include <asm/debug.h> - - -static inline void clear_status(void) -{ - unsigned long pci_stat; - - pci_stat = inl(PCI_BASE | PCI_GPPM_STATUS); - outl(pci_stat, PCI_BASE | PCI_GPPM_ICLR); -} - -static inline unsigned int -calc_cfg_addr(struct pci_bus *bus, unsigned int devfn, int where) -{ - unsigned int addr; - - addr = ((bus->number > 0) ? (((bus->number & 0xff) << PCI_CFG_BUS_SHIFT) | 1) : 0); - addr |= ((devfn & 0xff) << PCI_CFG_FUNC_SHIFT) | (where & 0xfc); - - return addr; -} - -static int -config_access(unsigned int pci_cmd, struct pci_bus *bus, unsigned int devfn, int where, unsigned int pci_mode, unsigned int *val) -{ - unsigned int flags; - unsigned long loops = 0; - unsigned long ioaddr = calc_cfg_addr(bus, devfn, where); - - local_irq_save(flags); - /*Clear pending interrupt status */ - if (inl(PCI_BASE | PCI_GPPM_STATUS)) { - clear_status(); - while (!(inl(PCI_BASE | PCI_GPPM_STATUS) == 0)) ; - } - - outl(ioaddr, PCI_BASE | PCI_GPPM_ADDR); - - if ((pci_cmd == PCI_CMD_IOW) || (pci_cmd == PCI_CMD_CONFIG_WRITE)) - outl(*val, PCI_BASE | PCI_GPPM_WDAT); - - outl(INIT_PCI_CYCLE | pci_cmd | (pci_mode & PCI_BYTE_ENABLE_MASK), - PCI_BASE | PCI_GPPM_CTRL); - - loops = - ((loops_per_jiffy * - PCI_IO_JIFFIES_TIMEOUT) >> (PCI_IO_JIFFIES_SHIFT)); - while (1) { - if (inl(PCI_BASE | PCI_GPPM_STATUS) & GPPM_DONE) { - if ((pci_cmd == PCI_CMD_IOR) || - (pci_cmd == PCI_CMD_CONFIG_READ)) - *val = inl(PCI_BASE | PCI_GPPM_RDAT); - clear_status(); - local_irq_restore(flags); - return PCIBIOS_SUCCESSFUL; - } else if (inl(PCI_BASE | PCI_GPPM_STATUS) & GPPM_R_MABORT) { - break; - } - - loops--; - if (loops == 0) { - printk("%s : Arbiter Locked.\n", __FUNCTION__); - } - } - - clear_status(); - if ((pci_cmd == PCI_CMD_IOR) || (pci_cmd == PCI_CMD_IOW)) { - printk("%s timeout (GPPM_CTRL=%X) ioaddr %lX pci_cmd %X\n", - __FUNCTION__, inl(PCI_BASE | PCI_GPPM_CTRL), ioaddr, - pci_cmd); - } - - if ((pci_cmd == PCI_CMD_IOR) || (pci_cmd == PCI_CMD_CONFIG_READ)) - *val = 0xffffffff; - local_irq_restore(flags); - return PCIBIOS_DEVICE_NOT_FOUND; -} - -/* - * We can't address 8 and 16 bit words directly. Instead we have to - * read/write a 32bit word and mask/modify the data we actually want. - */ -static int -read_config_byte(struct pci_bus *bus, unsigned int devfn, int where, u8 * val) -{ - unsigned int data = 0; - int err; - - if (bus == 0) - return -1; - - err = config_access(PCI_CMD_CONFIG_READ, bus, devfn, where, ~(1 << (where & 3)), &data); - switch (where & 0x03) { - case 0: - *val = (unsigned char)(data & 0x000000ff); - break; - case 1: - *val = (unsigned char)((data & 0x0000ff00) >> 8); - break; - case 2: - *val = (unsigned char)((data & 0x00ff0000) >> 16); - break; - case 3: - *val = (unsigned char)((data & 0xff000000) >> 24); - break; - } - - return err; -} - -static int -read_config_word(struct pci_bus *bus, unsigned int devfn, int where, u16 * val) -{ - unsigned int data = 0; - int err; - - if (bus == 0) - return -1; - - if (where & 0x01) - return PCIBIOS_BAD_REGISTER_NUMBER; - - err = config_access(PCI_CMD_CONFIG_READ, bus, devfn, where, ~(3 << (where & 3)), &data); - switch (where & 0x02) { - case 0: - *val = (unsigned short)(data & 0x0000ffff); - break; - case 2: - *val = (unsigned short)((data & 0xffff0000) >> 16); - break; - } - - return err; -} - -static int -read_config_dword(struct pci_bus *bus, unsigned int devfn, int where, u32 * val) -{ - int err; - if (bus == 0) - return -1; - - if (where & 0x03) - return PCIBIOS_BAD_REGISTER_NUMBER; - - err = config_access(PCI_CMD_CONFIG_READ, bus, devfn, where, 0, val); - - return err; -} - -static int -write_config_byte(struct pci_bus *bus, unsigned int devfn, int where, u8 val) -{ - unsigned int data = (unsigned int)val; - int err; - - if (bus == 0) - return -1; - - switch (where & 0x03) { - case 1: - data = (data << 8); - break; - case 2: - data = (data << 16); - break; - case 3: - data = (data << 24); - break; - default: - break; - } - - err = config_access(PCI_CMD_CONFIG_READ, bus, devfn, where, ~(1 << (where & 3)), &data); - - return err; -} - -static int -write_config_word(struct pci_bus *bus, unsigned int devfn, int where, u16 val) -{ - unsigned int data = (unsigned int)val; - int err; - - if (bus == 0) - return -1; - - if (where & 0x01) - return PCIBIOS_BAD_REGISTER_NUMBER; - - switch (where & 0x02) { - case 2: - data = (data << 16); - break; - default: - break; - } - err = config_access(PCI_CMD_CONFIG_WRITE, bus, devfn, where, ~(3 << (where & 3)), &data); - - return err; -} - -static int -write_config_dword(struct pci_bus *bus, unsigned int devfn, int where, u32 val) -{ - int err; - if (bus == 0) - return -1; - - if (where & 0x03) - return PCIBIOS_BAD_REGISTER_NUMBER; - - err = config_access(PCI_CMD_CONFIG_WRITE, bus, devfn, where, 0, &val); - - return err; -} - -static int config_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 * val) -{ - switch (size) { - case 1: { - u8 _val; - int rc = read_config_byte(bus, devfn, where, &_val); - *val = _val; - return rc; - } - case 2: { - u16 _val; - int rc = read_config_word(bus, devfn, where, &_val); - *val = _val; - return rc; - } - default: - return read_config_dword(bus, devfn, where, val); - } -} - -static int config_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val) -{ - switch (size) { - case 1: - return write_config_byte(bus, devfn, where, (u8) val); - case 2: - return write_config_word(bus, devfn, where, (u16) val); - default: - return write_config_dword(bus, devfn, where, val); - } -} - -struct pci_ops pnx8550_pci_ops = { - config_read, - config_write -}; diff --git a/arch/mips/pci/ops-rc32434.c b/arch/mips/pci/ops-rc32434.c new file mode 100644 index 00000000000..874ed6df976 --- /dev/null +++ b/arch/mips/pci/ops-rc32434.c @@ -0,0 +1,206 @@ +/* + * BRIEF MODULE DESCRIPTION + * pci_ops for IDT EB434 board + * + * Copyright 2004 IDT Inc. (rischelp@idt.com) + * Copyright 2006 Felix Fietkau <nbd@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/pci.h> +#include <linux/types.h> + +#include <asm/cpu.h> +#include <asm/mach-rc32434/rc32434.h> +#include <asm/mach-rc32434/pci.h> + +#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_WRITE 1 + + +#define PCI_CFG_SET(bus, slot, func, off) \ + (rc32434_pci->pcicfga = (0x80000000 | \ + ((bus) << 16) | ((slot)<<11) | \ + ((func)<<8) | (off))) + +static inline int config_access(unsigned char access_type, + struct pci_bus *bus, unsigned int devfn, + unsigned char where, u32 *data) +{ + unsigned int slot = PCI_SLOT(devfn); + u8 func = PCI_FUNC(devfn); + + /* Setup address */ + PCI_CFG_SET(bus->number, slot, func, where); + rc32434_sync(); + + if (access_type == PCI_ACCESS_WRITE) + rc32434_pci->pcicfgd = *data; + else + *data = rc32434_pci->pcicfgd; + + rc32434_sync(); + + return 0; +} + + +/* + * We can't address 8 and 16 bit words directly. Instead we have to + * read/write a 32bit word and mask/modify the data we actually want. + */ +static int read_config_byte(struct pci_bus *bus, unsigned int devfn, + int where, u8 *val) +{ + u32 data; + int ret; + + ret = config_access(PCI_ACCESS_READ, bus, devfn, where, &data); + *val = (data >> ((where & 3) << 3)) & 0xff; + return ret; +} + +static int read_config_word(struct pci_bus *bus, unsigned int devfn, + int where, u16 *val) +{ + u32 data; + int ret; + + ret = config_access(PCI_ACCESS_READ, bus, devfn, where, &data); + *val = (data >> ((where & 3) << 3)) & 0xffff; + return ret; +} + +static int read_config_dword(struct pci_bus *bus, unsigned int devfn, + int where, u32 *val) +{ + int ret; + int delay = 1; + + /* + * Don't scan too far, else there will be errors with plugged in + * daughterboard (rb564). + */ + if (bus->number == 0 && PCI_SLOT(devfn) > 21) + return 0; + +retry: + ret = config_access(PCI_ACCESS_READ, bus, devfn, where, val); + + /* + * Certain devices react delayed at device scan time, this + * gives them time to settle + */ + if (where == PCI_VENDOR_ID) { + if (ret == 0xffffffff || ret == 0x00000000 || + ret == 0x0000ffff || ret == 0xffff0000) { + if (delay > 4) + return 0; + delay *= 2; + msleep(delay); + goto retry; + } + } + + return ret; +} + +static int +write_config_byte(struct pci_bus *bus, unsigned int devfn, int where, + u8 val) +{ + u32 data = 0; + + if (config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) + return -1; + + data = (data & ~(0xff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + + if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data)) + return -1; + + return PCIBIOS_SUCCESSFUL; +} + + +static int +write_config_word(struct pci_bus *bus, unsigned int devfn, int where, + u16 val) +{ + u32 data = 0; + + if (config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) + return -1; + + data = (data & ~(0xffff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + + if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data)) + return -1; + + + return PCIBIOS_SUCCESSFUL; +} + + +static int +write_config_dword(struct pci_bus *bus, unsigned int devfn, int where, + u32 val) +{ + if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &val)) + return -1; + + return PCIBIOS_SUCCESSFUL; +} + +static int pci_config_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + switch (size) { + case 1: + return read_config_byte(bus, devfn, where, (u8 *) val); + case 2: + return read_config_word(bus, devfn, where, (u16 *) val); + default: + return read_config_dword(bus, devfn, where, val); + } +} + +static int pci_config_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + switch (size) { + case 1: + return write_config_byte(bus, devfn, where, (u8) val); + case 2: + return write_config_word(bus, devfn, where, (u16) val); + default: + return write_config_dword(bus, devfn, where, val); + } +} + +struct pci_ops rc32434_pci_ops = { + .read = pci_config_read, + .write = pci_config_write, +}; diff --git a/arch/mips/pci/ops-sni.c b/arch/mips/pci/ops-sni.c index 62bdd19c7f8..35daa7fe657 100644 --- a/arch/mips/pci/ops-sni.c +++ b/arch/mips/pci/ops-sni.c @@ -14,8 +14,8 @@ /* * It seems that on the RM200 only lower 3 bits of the 5 bit PCI device - * address are decoded. We therefore manually have to reject attempts at - * reading outside this range. Being on the paranoid side we only do this + * address are decoded. We therefore manually have to reject attempts at + * reading outside this range. Being on the paranoid side we only do this * test for bus 0 and hope forwarding and decoding work properly for any * subordinated busses. * @@ -31,8 +31,8 @@ static int set_config_address(unsigned int busno, unsigned int devfn, int reg) *(volatile u32 *)PCIMT_CONFIG_ADDRESS = ((busno & 0xff) << 16) | - ((devfn & 0xff) << 8) | - (reg & 0xfc); + ((devfn & 0xff) << 8) | + (reg & 0xfc); return PCIBIOS_SUCCESSFUL; } @@ -47,13 +47,13 @@ static int pcimt_read(struct pci_bus *bus, unsigned int devfn, int reg, switch (size) { case 1: - *val = *(volatile u8 *) (PCIMT_CONFIG_DATA + (reg & 3)); + *val = inb(PCIMT_CONFIG_DATA + (reg & 3)); break; case 2: - *val = *(volatile u16 *) (PCIMT_CONFIG_DATA + (reg & 2)); + *val = inw(PCIMT_CONFIG_DATA + (reg & 2)); break; case 4: - *val = *(volatile u32 *) PCIMT_CONFIG_DATA; + *val = inl(PCIMT_CONFIG_DATA); break; } @@ -70,20 +70,95 @@ static int pcimt_write(struct pci_bus *bus, unsigned int devfn, int reg, switch (size) { case 1: - *(volatile u8 *) (PCIMT_CONFIG_DATA + (reg & 3)) = val; + outb(val, PCIMT_CONFIG_DATA + (reg & 3)); break; case 2: - *(volatile u16 *) (PCIMT_CONFIG_DATA + (reg & 2)) = val; + outw(val, PCIMT_CONFIG_DATA + (reg & 2)); break; case 4: - *(volatile u32 *) PCIMT_CONFIG_DATA = val; + outl(val, PCIMT_CONFIG_DATA); break; } return 0; } -struct pci_ops sni_pci_ops = { +struct pci_ops sni_pcimt_ops = { .read = pcimt_read, .write = pcimt_write, }; + +static int pcit_set_config_address(unsigned int busno, unsigned int devfn, int reg) +{ + if ((devfn > 255) || (reg > 255) || (busno > 255)) + return PCIBIOS_BAD_REGISTER_NUMBER; + + outl((1 << 31) | ((busno & 0xff) << 16) | ((devfn & 0xff) << 8) | (reg & 0xfc), 0xcf8); + return PCIBIOS_SUCCESSFUL; +} + +static int pcit_read(struct pci_bus *bus, unsigned int devfn, int reg, + int size, u32 * val) +{ + int res; + + /* + * on bus 0 we need to check, whether there is a device answering + * for the devfn by doing a config write and checking the result. If + * we don't do it, we will get a data bus error + */ + if (bus->number == 0) { + pcit_set_config_address(0, 0, 0x68); + outl(inl(0xcfc) | 0xc0000000, 0xcfc); + if ((res = pcit_set_config_address(0, devfn, 0))) + return res; + outl(0xffffffff, 0xcfc); + pcit_set_config_address(0, 0, 0x68); + if (inl(0xcfc) & 0x100000) + return PCIBIOS_DEVICE_NOT_FOUND; + } + if ((res = pcit_set_config_address(bus->number, devfn, reg))) + return res; + + switch (size) { + case 1: + *val = inb(PCIMT_CONFIG_DATA + (reg & 3)); + break; + case 2: + *val = inw(PCIMT_CONFIG_DATA + (reg & 2)); + break; + case 4: + *val = inl(PCIMT_CONFIG_DATA); + break; + } + return 0; +} + +static int pcit_write(struct pci_bus *bus, unsigned int devfn, int reg, + int size, u32 val) +{ + int res; + + if ((res = pcit_set_config_address(bus->number, devfn, reg))) + return res; + + switch (size) { + case 1: + outb(val, PCIMT_CONFIG_DATA + (reg & 3)); + break; + case 2: + outw(val, PCIMT_CONFIG_DATA + (reg & 2)); + break; + case 4: + outl(val, PCIMT_CONFIG_DATA); + break; + } + + return 0; +} + + +struct pci_ops sni_pcit_ops = { + .read = pcit_read, + .write = pcit_write, +}; diff --git a/arch/mips/pci/ops-titan-ht.c b/arch/mips/pci/ops-titan-ht.c deleted file mode 100644 index 46c636c27e0..00000000000 --- a/arch/mips/pci/ops-titan-ht.c +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Copyright 2003 PMC-Sierra - * Author: Manish Lachwani (lachwani@pmc-sierra.com) - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/delay.h> -#include <asm/io.h> - -#include <asm/titan_dep.h> - -static int titan_ht_config_read_dword(struct pci_bus *bus, unsigned int devfn, - int offset, u32 * val) -{ - volatile uint32_t address; - int busno; - - busno = bus->number; - - address = (busno << 16) | (devfn << 8) | (offset & 0xfc) | 0x80000000; - if (busno != 0) - address |= 1; - - /* - * RM9000 HT Errata: Issue back to back HT config - * transcations. Issue a BIU sync before and - * after the HT cycle - */ - - *(volatile int32_t *) 0xfb0000f0 |= 0x2; - - udelay(30); - - *(volatile int32_t *) 0xfb0006f8 = address; - *(val) = *(volatile int32_t *) 0xfb0006fc; - - udelay(30); - - * (volatile int32_t *) 0xfb0000f0 |= 0x2; - - return PCIBIOS_SUCCESSFUL; -} - -static int titan_ht_config_read(struct pci_bus *bus, unsigned int devfn, - int offset, int size, u32 * val) -{ - uint32_t dword; - - titan_ht_config_read_dword(bus, devfn, offset, &dword); - - dword >>= ((offset & 3) << 3); - dword &= (0xffffffffU >> ((4 - size) << 8)); - - return PCIBIOS_SUCCESSFUL; -} - -static inline int titan_ht_config_write_dword(struct pci_bus *bus, - unsigned int devfn, int offset, u32 val) -{ - volatile uint32_t address; - int busno; - - busno = bus->number; - - address = (busno << 16) | (devfn << 8) | (offset & 0xfc) | 0x80000000; - if (busno != 0) - address |= 1; - - *(volatile int32_t *) 0xfb0000f0 |= 0x2; - - udelay(30); - - *(volatile int32_t *) 0xfb0006f8 = address; - *(volatile int32_t *) 0xfb0006fc = val; - - udelay(30); - - *(volatile int32_t *) 0xfb0000f0 |= 0x2; - - return PCIBIOS_SUCCESSFUL; -} - -static int titan_ht_config_write(struct pci_bus *bus, unsigned int devfn, - int offset, int size, u32 val) -{ - uint32_t val1, val2, mask; - - titan_ht_config_read_dword(bus, devfn, offset, &val2); - - val1 = val << ((offset & 3) << 3); - mask = ~(0xffffffffU >> ((4 - size) << 8)); - val2 &= ~(mask << ((offset & 3) << 8)); - - titan_ht_config_write_dword(bus, devfn, offset, val1 | val2); - - return PCIBIOS_SUCCESSFUL; -} - -struct pci_ops titan_ht_pci_ops = { - .read = titan_ht_config_read, - .write = titan_ht_config_write, -}; diff --git a/arch/mips/pci/ops-titan.c b/arch/mips/pci/ops-titan.c deleted file mode 100644 index 233ec6f2054..00000000000 --- a/arch/mips/pci/ops-titan.c +++ /dev/null @@ -1,100 +0,0 @@ -/* - * Copyright 2003 PMC-Sierra - * Author: Manish Lachwani (lachwani@pmc-sierra.com) - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> - -#include <asm/titan_dep.h> - -static int titan_read_config(struct pci_bus *bus, unsigned int devfn, int reg, - int size, u32 * val) -{ - uint32_t address, tmp; - int dev, busno, func; - - busno = bus->number; - dev = PCI_SLOT(devfn); - func = PCI_FUNC(devfn); - - address = (busno << 16) | (dev << 11) | (func << 8) | - (reg & 0xfc) | 0x80000000; - - - /* start the configuration cycle */ - TITAN_WRITE(TITAN_PCI_0_CONFIG_ADDRESS, address); - tmp = TITAN_READ(TITAN_PCI_0_CONFIG_DATA) >> ((reg & 3) << 3); - - switch (size) { - case 1: - tmp &= 0xff; - case 2: - tmp &= 0xffff; - } - *val = tmp; - - return PCIBIOS_SUCCESSFUL; -} - -static int titan_write_config(struct pci_bus *bus, unsigned int devfn, int reg, - int size, u32 val) -{ - uint32_t address; - int dev, busno, func; - - busno = bus->number; - dev = PCI_SLOT(devfn); - func = PCI_FUNC(devfn); - - address = (busno << 16) | (dev << 11) | (func << 8) | - (reg & 0xfc) | 0x80000000; - - /* start the configuration cycle */ - TITAN_WRITE(TITAN_PCI_0_CONFIG_ADDRESS, address); - - /* write the data */ - switch (size) { - case 1: - TITAN_WRITE_8(TITAN_PCI_0_CONFIG_DATA + (~reg & 0x3), val); - break; - - case 2: - TITAN_WRITE_16(TITAN_PCI_0_CONFIG_DATA + (~reg & 0x2), val); - break; - - case 4: - TITAN_WRITE(TITAN_PCI_0_CONFIG_DATA, val); - break; - } - - return PCIBIOS_SUCCESSFUL; -} - -/* - * Titan PCI structure - */ -struct pci_ops titan_pci_ops = { - titan_read_config, - titan_write_config, -}; diff --git a/arch/mips/pci/ops-tx3927.c b/arch/mips/pci/ops-tx3927.c index 42530a0b84b..d35dc9c9ab9 100644 --- a/arch/mips/pci/ops-tx3927.c +++ b/arch/mips/pci/ops-tx3927.c @@ -8,10 +8,10 @@ * * Based on arch/mips/ddb5xxx/ddb5477/pci_ops.c * - * Define the pci_ops for JMR3927. + * Define the pci_ops for TX3927. * * Much of the code is derived from the original DDB5074 port by - * Geert Uytterhoeven <geert@sonycom.com> + * Geert Uytterhoeven <geert@linux-m68k.org> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -37,46 +37,49 @@ #include <linux/pci.h> #include <linux/kernel.h> #include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/addrspace.h> -#include <asm/jmr3927/jmr3927.h> -#include <asm/debug.h> +#include <asm/txx9irq.h> +#include <asm/txx9/pci.h> +#include <asm/txx9/tx3927.h> -static inline int mkaddr(unsigned char bus, unsigned char dev_fn, - unsigned char where) +static int mkaddr(struct pci_bus *bus, unsigned char devfn, unsigned char where) { - if (bus == 0 && dev_fn >= PCI_DEVFN(TX3927_PCIC_MAX_DEVNU, 0)) - return PCIBIOS_DEVICE_NOT_FOUND; - - tx3927_pcicptr->ica = ((bus & 0xff) << 0x10) | - ((dev_fn & 0xff) << 0x08) | - (where & 0xfc); + if (bus->parent == NULL && + devfn >= PCI_DEVFN(TX3927_PCIC_MAX_DEVNU, 0)) + return -1; + tx3927_pcicptr->ica = + ((bus->number & 0xff) << 0x10) | + ((devfn & 0xff) << 0x08) | + (where & 0xfc) | (bus->parent ? 1 : 0); /* clear M_ABORT and Disable M_ABORT Int. */ tx3927_pcicptr->pcistat |= PCI_STATUS_REC_MASTER_ABORT; tx3927_pcicptr->pcistatim &= ~PCI_STATUS_REC_MASTER_ABORT; - - return PCIBIOS_SUCCESSFUL; + return 0; } static inline int check_abort(void) { - if (tx3927_pcicptr->pcistat & PCI_STATUS_REC_MASTER_ABORT) + if (tx3927_pcicptr->pcistat & PCI_STATUS_REC_MASTER_ABORT) { tx3927_pcicptr->pcistat |= PCI_STATUS_REC_MASTER_ABORT; tx3927_pcicptr->pcistatim |= PCI_STATUS_REC_MASTER_ABORT; + /* flush write buffer */ + iob(); return PCIBIOS_DEVICE_NOT_FOUND; - + } return PCIBIOS_SUCCESSFUL; } -static int jmr3927_pci_read_config(struct pci_bus *bus, unsigned int devfn, +static int tx3927_pci_read_config(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 * val) { - int ret; - - ret = mkaddr(bus->number, devfn, where); - if (ret) - return ret; + if (mkaddr(bus, devfn, where)) { + *val = 0xffffffff; + return PCIBIOS_DEVICE_NOT_FOUND; + } switch (size) { case 1: @@ -95,14 +98,11 @@ static int jmr3927_pci_read_config(struct pci_bus *bus, unsigned int devfn, return check_abort(); } -static int jmr3927_pci_write_config(struct pci_bus *bus, unsigned int devfn, +static int tx3927_pci_write_config(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val) { - int ret; - - ret = mkaddr(bus->number, devfn, where); - if (ret) - return ret; + if (mkaddr(bus, devfn, where)) + return PCIBIOS_DEVICE_NOT_FOUND; switch (size) { case 1: @@ -118,246 +118,114 @@ static int jmr3927_pci_write_config(struct pci_bus *bus, unsigned int devfn, tx3927_pcicptr->icd = cpu_to_le32(val); } - if (tx3927_pcicptr->pcistat & PCI_STATUS_REC_MASTER_ABORT) - tx3927_pcicptr->pcistat |= PCI_STATUS_REC_MASTER_ABORT; - tx3927_pcicptr->pcistatim |= PCI_STATUS_REC_MASTER_ABORT; - return PCIBIOS_DEVICE_NOT_FOUND; - return check_abort(); } -struct pci_ops jmr3927_pci_ops = { - jmr3927_pci_read_config, - jmr3927_pci_write_config, +static struct pci_ops tx3927_pci_ops = { + .read = tx3927_pci_read_config, + .write = tx3927_pci_write_config, }; - -#ifndef JMR3927_INIT_INDIRECT_PCI - -inline unsigned long tc_readl(volatile __u32 * addr) -{ - return readl(addr); -} - -inline void tc_writel(unsigned long data, volatile __u32 * addr) -{ - writel(data, addr); -} -#else - -unsigned long tc_readl(volatile __u32 * addr) -{ - unsigned long val; - - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipciaddr = - (unsigned long) CPHYSADDR(addr); - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipcibe = - (PCI_IPCIBE_ICMD_MEMREAD << PCI_IPCIBE_ICMD_SHIFT) | - PCI_IPCIBE_IBE_LONG; - while (!(tx3927_pcicptr->istat & PCI_ISTAT_IDICC)); - val = - le32_to_cpu(*(volatile u32 *) (unsigned long) & tx3927_pcicptr-> - ipcidata); - /* clear by setting */ - tx3927_pcicptr->istat |= PCI_ISTAT_IDICC; - return val; -} - -void tc_writel(unsigned long data, volatile __u32 * addr) -{ - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipcidata = - cpu_to_le32(data); - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipciaddr = - (unsigned long) CPHYSADDR(addr); - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipcibe = - (PCI_IPCIBE_ICMD_MEMWRITE << PCI_IPCIBE_ICMD_SHIFT) | - PCI_IPCIBE_IBE_LONG; - while (!(tx3927_pcicptr->istat & PCI_ISTAT_IDICC)); - /* clear by setting */ - tx3927_pcicptr->istat |= PCI_ISTAT_IDICC; -} - -unsigned char tx_ioinb(unsigned char *addr) -{ - unsigned long val; - __u32 ioaddr; - int offset; - int byte; - - ioaddr = (unsigned long) addr; - offset = ioaddr & 0x3; - byte = 0xf & ~(8 >> offset); - - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipciaddr = - (unsigned long) ioaddr; - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipcibe = - (PCI_IPCIBE_ICMD_IOREAD << PCI_IPCIBE_ICMD_SHIFT) | byte; - while (!(tx3927_pcicptr->istat & PCI_ISTAT_IDICC)); - val = - le32_to_cpu(*(volatile u32 *) (unsigned long) & tx3927_pcicptr-> - ipcidata); - val = val & 0xff; - /* clear by setting */ - tx3927_pcicptr->istat |= PCI_ISTAT_IDICC; - return val; -} - -void tx_iooutb(unsigned long data, unsigned char *addr) -{ - __u32 ioaddr; - int offset; - int byte; - - data = data | (data << 8) | (data << 16) | (data << 24); - ioaddr = (unsigned long) addr; - offset = ioaddr & 0x3; - byte = 0xf & ~(8 >> offset); - - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipcidata = data; - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipciaddr = - (unsigned long) ioaddr; - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipcibe = - (PCI_IPCIBE_ICMD_IOWRITE << PCI_IPCIBE_ICMD_SHIFT) | byte; - while (!(tx3927_pcicptr->istat & PCI_ISTAT_IDICC)); - /* clear by setting */ - tx3927_pcicptr->istat |= PCI_ISTAT_IDICC; -} - -unsigned short tx_ioinw(unsigned short *addr) -{ - unsigned long val; - __u32 ioaddr; - int offset; - int byte; - - ioaddr = (unsigned long) addr; - offset = ioaddr & 0x2; - byte = 3 << offset; - - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipciaddr = - (unsigned long) ioaddr; - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipcibe = - (PCI_IPCIBE_ICMD_IOREAD << PCI_IPCIBE_ICMD_SHIFT) | byte; - while (!(tx3927_pcicptr->istat & PCI_ISTAT_IDICC)); - val = - le32_to_cpu(*(volatile u32 *) (unsigned long) & tx3927_pcicptr-> - ipcidata); - val = val & 0xffff; - /* clear by setting */ - tx3927_pcicptr->istat |= PCI_ISTAT_IDICC; - return val; - -} - -void tx_iooutw(unsigned long data, unsigned short *addr) -{ - __u32 ioaddr; - int offset; - int byte; - - data = data | (data << 16); - ioaddr = (unsigned long) addr; - offset = ioaddr & 0x2; - byte = 3 << offset; - - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipcidata = data; - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipciaddr = - (unsigned long) ioaddr; - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipcibe = - (PCI_IPCIBE_ICMD_IOWRITE << PCI_IPCIBE_ICMD_SHIFT) | byte; - while (!(tx3927_pcicptr->istat & PCI_ISTAT_IDICC)); - /* clear by setting */ - tx3927_pcicptr->istat |= PCI_ISTAT_IDICC; -} - -unsigned long tx_ioinl(unsigned int *addr) -{ - unsigned long val; - __u32 ioaddr; - - ioaddr = (unsigned long) addr; - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipciaddr = - (unsigned long) ioaddr; - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipcibe = - (PCI_IPCIBE_ICMD_IOREAD << PCI_IPCIBE_ICMD_SHIFT) | - PCI_IPCIBE_IBE_LONG; - while (!(tx3927_pcicptr->istat & PCI_ISTAT_IDICC)); - val = - le32_to_cpu(*(volatile u32 *) (unsigned long) & tx3927_pcicptr-> - ipcidata); - /* clear by setting */ - tx3927_pcicptr->istat |= PCI_ISTAT_IDICC; - return val; -} - -void tx_iooutl(unsigned long data, unsigned int *addr) -{ - __u32 ioaddr; - - ioaddr = (unsigned long) addr; - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipcidata = - cpu_to_le32(data); - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipciaddr = - (unsigned long) ioaddr; - *(volatile u32 *) (unsigned long) & tx3927_pcicptr->ipcibe = - (PCI_IPCIBE_ICMD_IOWRITE << PCI_IPCIBE_ICMD_SHIFT) | - PCI_IPCIBE_IBE_LONG; - while (!(tx3927_pcicptr->istat & PCI_ISTAT_IDICC)); - /* clear by setting */ - tx3927_pcicptr->istat |= PCI_ISTAT_IDICC; -} - -void tx_insbyte(unsigned char *addr, void *buffer, unsigned int count) -{ - unsigned char *ptr = (unsigned char *) buffer; - - while (count--) { - *ptr++ = tx_ioinb(addr); - } -} - -void tx_insword(unsigned short *addr, void *buffer, unsigned int count) -{ - unsigned short *ptr = (unsigned short *) buffer; - - while (count--) { - *ptr++ = tx_ioinw(addr); - } -} - -void tx_inslong(unsigned int *addr, void *buffer, unsigned int count) -{ - unsigned long *ptr = (unsigned long *) buffer; - - while (count--) { - *ptr++ = tx_ioinl(addr); - } -} - -void tx_outsbyte(unsigned char *addr, void *buffer, unsigned int count) -{ - unsigned char *ptr = (unsigned char *) buffer; - - while (count--) { - tx_iooutb(*ptr++, addr); +void __init tx3927_pcic_setup(struct pci_controller *channel, + unsigned long sdram_size, int extarb) +{ + unsigned long flags; + unsigned long io_base = + channel->io_resource->start + mips_io_port_base - IO_BASE; + unsigned long io_size = + channel->io_resource->end - channel->io_resource->start; + unsigned long io_pciaddr = + channel->io_resource->start - channel->io_offset; + unsigned long mem_base = + channel->mem_resource->start; + unsigned long mem_size = + channel->mem_resource->end - channel->mem_resource->start; + unsigned long mem_pciaddr = + channel->mem_resource->start - channel->mem_offset; + + printk(KERN_INFO "TX3927 PCIC -- DID:%04x VID:%04x RID:%02x Arbiter:%s", + tx3927_pcicptr->did, tx3927_pcicptr->vid, + tx3927_pcicptr->rid, + extarb ? "External" : "Internal"); + channel->pci_ops = &tx3927_pci_ops; + + local_irq_save(flags); + /* Disable External PCI Config. Access */ + tx3927_pcicptr->lbc = TX3927_PCIC_LBC_EPCAD; +#ifdef __BIG_ENDIAN + tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_IBSE | + TX3927_PCIC_LBC_TIBSE | + TX3927_PCIC_LBC_TMFBSE | TX3927_PCIC_LBC_MSDSE; +#endif + /* LB->PCI mappings */ + tx3927_pcicptr->iomas = ~(io_size - 1); + tx3927_pcicptr->ilbioma = io_base; + tx3927_pcicptr->ipbioma = io_pciaddr; + tx3927_pcicptr->mmas = ~(mem_size - 1); + tx3927_pcicptr->ilbmma = mem_base; + tx3927_pcicptr->ipbmma = mem_pciaddr; + /* PCI->LB mappings */ + tx3927_pcicptr->iobas = 0xffffffff; + tx3927_pcicptr->ioba = 0; + tx3927_pcicptr->tlbioma = 0; + tx3927_pcicptr->mbas = ~(sdram_size - 1); + tx3927_pcicptr->mba = 0; + tx3927_pcicptr->tlbmma = 0; + /* Enable Direct mapping Address Space Decoder */ + tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_ILMDE | TX3927_PCIC_LBC_ILIDE; + + /* Clear All Local Bus Status */ + tx3927_pcicptr->lbstat = TX3927_PCIC_LBIM_ALL; + /* Enable All Local Bus Interrupts */ + tx3927_pcicptr->lbim = TX3927_PCIC_LBIM_ALL; + /* Clear All PCI Status Error */ + tx3927_pcicptr->pcistat = TX3927_PCIC_PCISTATIM_ALL; + /* Enable All PCI Status Error Interrupts */ + tx3927_pcicptr->pcistatim = TX3927_PCIC_PCISTATIM_ALL; + + /* PCIC Int => IRC IRQ10 */ + tx3927_pcicptr->il = TX3927_IR_PCI; + /* Target Control (per errata) */ + tx3927_pcicptr->tc = TX3927_PCIC_TC_OF8E | TX3927_PCIC_TC_IF8E; + + /* Enable Bus Arbiter */ + if (!extarb) + tx3927_pcicptr->pbapmc = TX3927_PCIC_PBAPMC_PBAEN; + + tx3927_pcicptr->pcicmd = PCI_COMMAND_MASTER | + PCI_COMMAND_MEMORY | + PCI_COMMAND_IO | + PCI_COMMAND_PARITY | PCI_COMMAND_SERR; + local_irq_restore(flags); +} + +static irqreturn_t tx3927_pcierr_interrupt(int irq, void *dev_id) +{ + struct pt_regs *regs = get_irq_regs(); + + if (txx9_pci_err_action != TXX9_PCI_ERR_IGNORE) { + printk(KERN_WARNING "PCI error interrupt at 0x%08lx.\n", + regs->cp0_epc); + printk(KERN_WARNING "pcistat:%02x, lbstat:%04lx\n", + tx3927_pcicptr->pcistat, tx3927_pcicptr->lbstat); } -} - -void tx_outsword(unsigned short *addr, void *buffer, unsigned int count) -{ - unsigned short *ptr = (unsigned short *) buffer; - - while (count--) { - tx_iooutw(*ptr++, addr); + if (txx9_pci_err_action != TXX9_PCI_ERR_PANIC) { + /* clear all pci errors */ + tx3927_pcicptr->pcistat |= TX3927_PCIC_PCISTATIM_ALL; + tx3927_pcicptr->istat = TX3927_PCIC_IIM_ALL; + tx3927_pcicptr->tstat = TX3927_PCIC_TIM_ALL; + tx3927_pcicptr->lbstat = TX3927_PCIC_LBIM_ALL; + return IRQ_HANDLED; } + console_verbose(); + panic("PCI error."); } -void tx_outslong(unsigned int *addr, void *buffer, unsigned int count) +void __init tx3927_setup_pcierr_irq(void) { - unsigned long *ptr = (unsigned long *) buffer; - - while (count--) { - tx_iooutl(*ptr++, addr); - } + if (request_irq(TXX9_IRQ_BASE + TX3927_IR_PCI, + tx3927_pcierr_interrupt, + 0, "PCI error", + (void *)TX3927_PCIC_REG)) + printk(KERN_WARNING "Failed to request irq for PCIERR\n"); } -#endif diff --git a/arch/mips/pci/ops-tx4927.c b/arch/mips/pci/ops-tx4927.c index 7688b771132..0e046d82e4e 100644 --- a/arch/mips/pci/ops-tx4927.c +++ b/arch/mips/pci/ops-tx4927.c @@ -1,209 +1,530 @@ /* - * Copyright 2001 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ahennessy@mvista.com + * Define the pci_ops for the PCIC on Toshiba TX4927, TX4938, etc. * - * Copyright (C) 2000-2001 Toshiba Corporation - * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) - * - * Based on arch/mips/ddb5xxx/ddb5477/pci_ops.c - * - * Define the pci_ops for the Toshiba rbtx4927 - * - * Much of the code is derived from the original DDB5074 port by - * Geert Uytterhoeven <geert@sonycom.com> + * Based on linux/arch/mips/pci/ops-tx4938.c, + * linux/arch/mips/pci/fixup-rbtx4938.c, + * linux/arch/mips/txx9/rbtx4938/setup.c, + * and RBTX49xx patch from CELF patch archive. * - * Copyright 2004 MontaVista Software Inc. - * Author: Manish Lachwani (mlachwani@mvista.com) - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * 2003-2005 (c) MontaVista Software, Inc. + * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) + * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007 * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. */ -#include <linux/types.h> -#include <linux/pci.h> #include <linux/kernel.h> -#include <linux/init.h> - -#include <asm/addrspace.h> -#include <asm/byteorder.h> -#include <asm/tx4927/tx4927_pci.h> - -/* initialize in setup */ -struct resource pci_io_resource = { - .name = "TX4927 PCI IO SPACE", - .start = 0x1000, - .end = (0x1000 + (TX4927_PCIIO_SIZE)) - 1, - .flags = IORESOURCE_IO -}; +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <asm/txx9/pci.h> +#include <asm/txx9/tx4927pcic.h> -/* initialize in setup */ -struct resource pci_mem_resource = { - .name = "TX4927 PCI MEM SPACE", - .start = TX4927_PCIMEM, - .end = TX4927_PCIMEM + TX4927_PCIMEM_SIZE - 1, - .flags = IORESOURCE_MEM -}; +static struct { + struct pci_controller *channel; + struct tx4927_pcic_reg __iomem *pcicptr; +} pcicptrs[2]; /* TX4938 has 2 pcic */ + +static void __init set_tx4927_pcicptr(struct pci_controller *channel, + struct tx4927_pcic_reg __iomem *pcicptr) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(pcicptrs); i++) { + if (pcicptrs[i].channel == channel) { + pcicptrs[i].pcicptr = pcicptr; + return; + } + } + for (i = 0; i < ARRAY_SIZE(pcicptrs); i++) { + if (!pcicptrs[i].channel) { + pcicptrs[i].channel = channel; + pcicptrs[i].pcicptr = pcicptr; + return; + } + } + BUG(); +} -static int mkaddr(int bus, int dev_fn, int where, int *flagsp) +struct tx4927_pcic_reg __iomem *get_tx4927_pcicptr( + struct pci_controller *channel) { - if (bus > 0) { - /* Type 1 configuration */ - tx4927_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) | - ((dev_fn & 0xff) << 0x08) | (where & 0xfc) | 1; - } else { - if (dev_fn >= PCI_DEVFN(TX4927_PCIC_MAX_DEVNU, 0)) - return -1; + int i; - /* Type 0 configuration */ - tx4927_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) | - ((dev_fn & 0xff) << 0x08) | (where & 0xfc); + for (i = 0; i < ARRAY_SIZE(pcicptrs); i++) { + if (pcicptrs[i].channel == channel) + return pcicptrs[i].pcicptr; } + return NULL; +} + +static int mkaddr(struct pci_bus *bus, unsigned int devfn, int where, + struct tx4927_pcic_reg __iomem *pcicptr) +{ + if (bus->parent == NULL && + devfn >= PCI_DEVFN(TX4927_PCIC_MAX_DEVNU, 0)) + return -1; + __raw_writel(((bus->number & 0xff) << 0x10) + | ((devfn & 0xff) << 0x08) | (where & 0xfc) + | (bus->parent ? 1 : 0), + &pcicptr->g2pcfgadrs); /* clear M_ABORT and Disable M_ABORT Int. */ - tx4927_pcicptr->pcistatus = - (tx4927_pcicptr->pcistatus & 0x0000ffff) | - (PCI_STATUS_REC_MASTER_ABORT << 16); - tx4927_pcicptr->pcimask &= ~PCI_STATUS_REC_MASTER_ABORT; + __raw_writel((__raw_readl(&pcicptr->pcistatus) & 0x0000ffff) + | (PCI_STATUS_REC_MASTER_ABORT << 16), + &pcicptr->pcistatus); return 0; } -static int check_abort(int flags) +static int check_abort(struct tx4927_pcic_reg __iomem *pcicptr) { int code = PCIBIOS_SUCCESSFUL; - if (tx4927_pcicptr-> - pcistatus & (PCI_STATUS_REC_MASTER_ABORT << 16)) { - tx4927_pcicptr->pcistatus = - (tx4927_pcicptr-> - pcistatus & 0x0000ffff) | (PCI_STATUS_REC_MASTER_ABORT - << 16); - tx4927_pcicptr->pcimask |= PCI_STATUS_REC_MASTER_ABORT; + + /* wait write cycle completion before checking error status */ + while (__raw_readl(&pcicptr->pcicstatus) & TX4927_PCIC_PCICSTATUS_IWB) + ; + if (__raw_readl(&pcicptr->pcistatus) + & (PCI_STATUS_REC_MASTER_ABORT << 16)) { + __raw_writel((__raw_readl(&pcicptr->pcistatus) & 0x0000ffff) + | (PCI_STATUS_REC_MASTER_ABORT << 16), + &pcicptr->pcistatus); + /* flush write buffer */ + iob(); code = PCIBIOS_DEVICE_NOT_FOUND; } return code; } -static int tx4927_pcibios_read_config(struct pci_bus *bus, unsigned int devfn, int where, - int size, u32 * val) +static u8 icd_readb(int offset, struct tx4927_pcic_reg __iomem *pcicptr) +{ +#ifdef __BIG_ENDIAN + offset ^= 3; +#endif + return __raw_readb((void __iomem *)&pcicptr->g2pcfgdata + offset); +} +static u16 icd_readw(int offset, struct tx4927_pcic_reg __iomem *pcicptr) +{ +#ifdef __BIG_ENDIAN + offset ^= 2; +#endif + return __raw_readw((void __iomem *)&pcicptr->g2pcfgdata + offset); +} +static u32 icd_readl(struct tx4927_pcic_reg __iomem *pcicptr) +{ + return __raw_readl(&pcicptr->g2pcfgdata); +} +static void icd_writeb(u8 val, int offset, + struct tx4927_pcic_reg __iomem *pcicptr) +{ +#ifdef __BIG_ENDIAN + offset ^= 3; +#endif + __raw_writeb(val, (void __iomem *)&pcicptr->g2pcfgdata + offset); +} +static void icd_writew(u16 val, int offset, + struct tx4927_pcic_reg __iomem *pcicptr) +{ +#ifdef __BIG_ENDIAN + offset ^= 2; +#endif + __raw_writew(val, (void __iomem *)&pcicptr->g2pcfgdata + offset); +} +static void icd_writel(u32 val, struct tx4927_pcic_reg __iomem *pcicptr) +{ + __raw_writel(val, &pcicptr->g2pcfgdata); +} + +static struct tx4927_pcic_reg __iomem *pci_bus_to_pcicptr(struct pci_bus *bus) { - int flags, retval, dev, busno, func; + struct pci_controller *channel = bus->sysdata; + return get_tx4927_pcicptr(channel); +} - busno = bus->number; - dev = PCI_SLOT(devfn); - func = PCI_FUNC(devfn); +static int tx4927_pci_config_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + struct tx4927_pcic_reg __iomem *pcicptr = pci_bus_to_pcicptr(bus); - /* check if the bus is top-level */ - if (bus->parent != NULL) { - busno = bus->number; - } else { - busno = 0; + if (mkaddr(bus, devfn, where, pcicptr)) { + *val = 0xffffffff; + return -1; + } + switch (size) { + case 1: + *val = icd_readb(where & 3, pcicptr); + break; + case 2: + *val = icd_readw(where & 3, pcicptr); + break; + default: + *val = icd_readl(pcicptr); } + return check_abort(pcicptr); +} - if (mkaddr(busno, devfn, where, &flags)) - return -1; +static int tx4927_pci_config_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + struct tx4927_pcic_reg __iomem *pcicptr = pci_bus_to_pcicptr(bus); + if (mkaddr(bus, devfn, where, pcicptr)) + return -1; switch (size) { case 1: - *val = *(volatile u8 *) ((ulong) & tx4927_pcicptr-> - g2pcfgdata | -#ifdef __LITTLE_ENDIAN - (where & 3)); -#else - ((where & 0x3) ^ 0x3)); -#endif + icd_writeb(val, where & 3, pcicptr); break; case 2: - *val = *(volatile u16 *) ((ulong) & tx4927_pcicptr-> - g2pcfgdata | -#ifdef __LITTLE_ENDIAN - (where & 3)); -#else - ((where & 0x3) ^ 0x2)); -#endif - break; - case 4: - *val = tx4927_pcicptr->g2pcfgdata; + icd_writew(val, where & 3, pcicptr); break; + default: + icd_writel(val, pcicptr); } + return check_abort(pcicptr); +} - retval = check_abort(flags); - if (retval == PCIBIOS_DEVICE_NOT_FOUND) - *val = 0xffffffff; +static struct pci_ops tx4927_pci_ops = { + .read = tx4927_pci_config_read, + .write = tx4927_pci_config_write, +}; - return retval; -} +static struct { + u8 trdyto; + u8 retryto; + u16 gbwc; +} tx4927_pci_opts = { + .trdyto = 0, + .retryto = 0, + .gbwc = 0xfe0, /* 4064 GBUSCLK for CCFG.GTOT=0b11 */ +}; -static int tx4927_pcibios_write_config(struct pci_bus *bus, unsigned int devfn, int where, - int size, u32 val) +char *tx4927_pcibios_setup(char *str) { - int flags, dev, busno, func; - busno = bus->number; - dev = PCI_SLOT(devfn); - func = PCI_FUNC(devfn); + unsigned long val; - /* check if the bus is top-level */ - if (bus->parent != NULL) { - busno = bus->number; - } else { - busno = 0; + if (!strncmp(str, "trdyto=", 7)) { + u8 val = 0; + if (kstrtou8(str + 7, 0, &val) == 0) + tx4927_pci_opts.trdyto = val; + return NULL; + } + if (!strncmp(str, "retryto=", 8)) { + u8 val = 0; + if (kstrtou8(str + 8, 0, &val) == 0) + tx4927_pci_opts.retryto = val; + return NULL; } + if (!strncmp(str, "gbwc=", 5)) { + u16 val; + if (kstrtou16(str + 5, 0, &val) == 0) + tx4927_pci_opts.gbwc = val; + return NULL; + } + return str; +} - if (mkaddr(busno, devfn, where, &flags)) - return -1; +void __init tx4927_pcic_setup(struct tx4927_pcic_reg __iomem *pcicptr, + struct pci_controller *channel, int extarb) +{ + int i; + unsigned long flags; - switch (size) { - case 1: - *(volatile u8 *) ((ulong) & tx4927_pcicptr-> - g2pcfgdata | -#ifdef __LITTLE_ENDIAN - (where & 3)) = val; + set_tx4927_pcicptr(channel, pcicptr); + + if (!channel->pci_ops) + printk(KERN_INFO + "PCIC -- DID:%04x VID:%04x RID:%02x Arbiter:%s\n", + __raw_readl(&pcicptr->pciid) >> 16, + __raw_readl(&pcicptr->pciid) & 0xffff, + __raw_readl(&pcicptr->pciccrev) & 0xff, + extarb ? "External" : "Internal"); + channel->pci_ops = &tx4927_pci_ops; + + local_irq_save(flags); + + /* Disable All Initiator Space */ + __raw_writel(__raw_readl(&pcicptr->pciccfg) + & ~(TX4927_PCIC_PCICCFG_G2PMEN(0) + | TX4927_PCIC_PCICCFG_G2PMEN(1) + | TX4927_PCIC_PCICCFG_G2PMEN(2) + | TX4927_PCIC_PCICCFG_G2PIOEN), + &pcicptr->pciccfg); + + /* GB->PCI mappings */ + __raw_writel((channel->io_resource->end - channel->io_resource->start) + >> 4, + &pcicptr->g2piomask); + ____raw_writeq((channel->io_resource->start + + channel->io_map_base - IO_BASE) | +#ifdef __BIG_ENDIAN + TX4927_PCIC_G2PIOGBASE_ECHG #else - ((where & 0x3) ^ 0x3)) = val; + TX4927_PCIC_G2PIOGBASE_BSDIS #endif - break; - - case 2: - *(volatile u16 *) ((ulong) & tx4927_pcicptr-> - g2pcfgdata | -#ifdef __LITTLE_ENDIAN - (where & 3)) = val; + , &pcicptr->g2piogbase); + ____raw_writeq(channel->io_resource->start - channel->io_offset, + &pcicptr->g2piopbase); + for (i = 0; i < 3; i++) { + __raw_writel(0, &pcicptr->g2pmmask[i]); + ____raw_writeq(0, &pcicptr->g2pmgbase[i]); + ____raw_writeq(0, &pcicptr->g2pmpbase[i]); + } + if (channel->mem_resource->end) { + __raw_writel((channel->mem_resource->end + - channel->mem_resource->start) >> 4, + &pcicptr->g2pmmask[0]); + ____raw_writeq(channel->mem_resource->start | +#ifdef __BIG_ENDIAN + TX4927_PCIC_G2PMnGBASE_ECHG #else - ((where & 0x3) ^ 0x2)) = val; + TX4927_PCIC_G2PMnGBASE_BSDIS #endif - break; - case 4: - tx4927_pcicptr->g2pcfgdata = val; - break; + , &pcicptr->g2pmgbase[0]); + ____raw_writeq(channel->mem_resource->start - + channel->mem_offset, + &pcicptr->g2pmpbase[0]); + } + /* PCI->GB mappings (I/O 256B) */ + __raw_writel(0, &pcicptr->p2giopbase); /* 256B */ + ____raw_writeq(0, &pcicptr->p2giogbase); + /* PCI->GB mappings (MEM 512MB (64MB on R1.x)) */ + __raw_writel(0, &pcicptr->p2gm0plbase); + __raw_writel(0, &pcicptr->p2gm0pubase); + ____raw_writeq(TX4927_PCIC_P2GMnGBASE_TMEMEN | +#ifdef __BIG_ENDIAN + TX4927_PCIC_P2GMnGBASE_TECHG +#else + TX4927_PCIC_P2GMnGBASE_TBSDIS +#endif + , &pcicptr->p2gmgbase[0]); + /* PCI->GB mappings (MEM 16MB) */ + __raw_writel(0xffffffff, &pcicptr->p2gm1plbase); + __raw_writel(0xffffffff, &pcicptr->p2gm1pubase); + ____raw_writeq(0, &pcicptr->p2gmgbase[1]); + /* PCI->GB mappings (MEM 1MB) */ + __raw_writel(0xffffffff, &pcicptr->p2gm2pbase); /* 1MB */ + ____raw_writeq(0, &pcicptr->p2gmgbase[2]); + + /* Clear all (including IRBER) except for GBWC */ + __raw_writel((tx4927_pci_opts.gbwc << 16) + & TX4927_PCIC_PCICCFG_GBWC_MASK, + &pcicptr->pciccfg); + /* Enable Initiator Memory Space */ + if (channel->mem_resource->end) + __raw_writel(__raw_readl(&pcicptr->pciccfg) + | TX4927_PCIC_PCICCFG_G2PMEN(0), + &pcicptr->pciccfg); + /* Enable Initiator I/O Space */ + if (channel->io_resource->end) + __raw_writel(__raw_readl(&pcicptr->pciccfg) + | TX4927_PCIC_PCICCFG_G2PIOEN, + &pcicptr->pciccfg); + /* Enable Initiator Config */ + __raw_writel(__raw_readl(&pcicptr->pciccfg) + | TX4927_PCIC_PCICCFG_ICAEN | TX4927_PCIC_PCICCFG_TCAR, + &pcicptr->pciccfg); + + /* Do not use MEMMUL, MEMINF: YMFPCI card causes M_ABORT. */ + __raw_writel(0, &pcicptr->pcicfg1); + + __raw_writel((__raw_readl(&pcicptr->g2ptocnt) & ~0xffff) + | (tx4927_pci_opts.trdyto & 0xff) + | ((tx4927_pci_opts.retryto & 0xff) << 8), + &pcicptr->g2ptocnt); + + /* Clear All Local Bus Status */ + __raw_writel(TX4927_PCIC_PCICSTATUS_ALL, &pcicptr->pcicstatus); + /* Enable All Local Bus Interrupts */ + __raw_writel(TX4927_PCIC_PCICSTATUS_ALL, &pcicptr->pcicmask); + /* Clear All Initiator Status */ + __raw_writel(TX4927_PCIC_G2PSTATUS_ALL, &pcicptr->g2pstatus); + /* Enable All Initiator Interrupts */ + __raw_writel(TX4927_PCIC_G2PSTATUS_ALL, &pcicptr->g2pmask); + /* Clear All PCI Status Error */ + __raw_writel((__raw_readl(&pcicptr->pcistatus) & 0x0000ffff) + | (TX4927_PCIC_PCISTATUS_ALL << 16), + &pcicptr->pcistatus); + /* Enable All PCI Status Error Interrupts */ + __raw_writel(TX4927_PCIC_PCISTATUS_ALL, &pcicptr->pcimask); + + if (!extarb) { + /* Reset Bus Arbiter */ + __raw_writel(TX4927_PCIC_PBACFG_RPBA, &pcicptr->pbacfg); + __raw_writel(0, &pcicptr->pbabm); + /* Enable Bus Arbiter */ + __raw_writel(TX4927_PCIC_PBACFG_PBAEN, &pcicptr->pbacfg); } - return check_abort(flags); + __raw_writel(PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY + | PCI_COMMAND_PARITY | PCI_COMMAND_SERR, + &pcicptr->pcistatus); + local_irq_restore(flags); + + printk(KERN_DEBUG + "PCI: COMMAND=%04x,PCIMASK=%04x," + "TRDYTO=%02x,RETRYTO=%02x,GBWC=%03x\n", + __raw_readl(&pcicptr->pcistatus) & 0xffff, + __raw_readl(&pcicptr->pcimask) & 0xffff, + __raw_readl(&pcicptr->g2ptocnt) & 0xff, + (__raw_readl(&pcicptr->g2ptocnt) & 0xff00) >> 8, + (__raw_readl(&pcicptr->pciccfg) >> 16) & 0xfff); } -struct pci_ops tx4927_pci_ops = { - tx4927_pcibios_read_config, - tx4927_pcibios_write_config -}; +static void tx4927_report_pcic_status1(struct tx4927_pcic_reg __iomem *pcicptr) +{ + __u16 pcistatus = (__u16)(__raw_readl(&pcicptr->pcistatus) >> 16); + __u32 g2pstatus = __raw_readl(&pcicptr->g2pstatus); + __u32 pcicstatus = __raw_readl(&pcicptr->pcicstatus); + static struct { + __u32 flag; + const char *str; + } pcistat_tbl[] = { + { PCI_STATUS_DETECTED_PARITY, "DetectedParityError" }, + { PCI_STATUS_SIG_SYSTEM_ERROR, "SignaledSystemError" }, + { PCI_STATUS_REC_MASTER_ABORT, "ReceivedMasterAbort" }, + { PCI_STATUS_REC_TARGET_ABORT, "ReceivedTargetAbort" }, + { PCI_STATUS_SIG_TARGET_ABORT, "SignaledTargetAbort" }, + { PCI_STATUS_PARITY, "MasterParityError" }, + }, g2pstat_tbl[] = { + { TX4927_PCIC_G2PSTATUS_TTOE, "TIOE" }, + { TX4927_PCIC_G2PSTATUS_RTOE, "RTOE" }, + }, pcicstat_tbl[] = { + { TX4927_PCIC_PCICSTATUS_PME, "PME" }, + { TX4927_PCIC_PCICSTATUS_TLB, "TLB" }, + { TX4927_PCIC_PCICSTATUS_NIB, "NIB" }, + { TX4927_PCIC_PCICSTATUS_ZIB, "ZIB" }, + { TX4927_PCIC_PCICSTATUS_PERR, "PERR" }, + { TX4927_PCIC_PCICSTATUS_SERR, "SERR" }, + { TX4927_PCIC_PCICSTATUS_GBE, "GBE" }, + { TX4927_PCIC_PCICSTATUS_IWB, "IWB" }, + }; + int i, cont; -/* - * h/w only supports devices 0x00 to 0x14 - */ -struct pci_controller tx4927_controller = { - .pci_ops = &tx4927_pci_ops, - .io_resource = &pci_io_resource, - .mem_resource = &pci_mem_resource, -}; + printk(KERN_ERR ""); + if (pcistatus & TX4927_PCIC_PCISTATUS_ALL) { + printk(KERN_CONT "pcistat:%04x(", pcistatus); + for (i = 0, cont = 0; i < ARRAY_SIZE(pcistat_tbl); i++) + if (pcistatus & pcistat_tbl[i].flag) + printk(KERN_CONT "%s%s", + cont++ ? " " : "", pcistat_tbl[i].str); + printk(KERN_CONT ") "); + } + if (g2pstatus & TX4927_PCIC_G2PSTATUS_ALL) { + printk(KERN_CONT "g2pstatus:%08x(", g2pstatus); + for (i = 0, cont = 0; i < ARRAY_SIZE(g2pstat_tbl); i++) + if (g2pstatus & g2pstat_tbl[i].flag) + printk(KERN_CONT "%s%s", + cont++ ? " " : "", g2pstat_tbl[i].str); + printk(KERN_CONT ") "); + } + if (pcicstatus & TX4927_PCIC_PCICSTATUS_ALL) { + printk(KERN_CONT "pcicstatus:%08x(", pcicstatus); + for (i = 0, cont = 0; i < ARRAY_SIZE(pcicstat_tbl); i++) + if (pcicstatus & pcicstat_tbl[i].flag) + printk(KERN_CONT "%s%s", + cont++ ? " " : "", pcicstat_tbl[i].str); + printk(KERN_CONT ")"); + } + printk(KERN_CONT "\n"); +} + +void tx4927_report_pcic_status(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(pcicptrs); i++) { + if (pcicptrs[i].pcicptr) + tx4927_report_pcic_status1(pcicptrs[i].pcicptr); + } +} + +static void tx4927_dump_pcic_settings1(struct tx4927_pcic_reg __iomem *pcicptr) +{ + int i; + __u32 __iomem *preg = (__u32 __iomem *)pcicptr; + + printk(KERN_INFO "tx4927 pcic (0x%p) settings:", pcicptr); + for (i = 0; i < sizeof(struct tx4927_pcic_reg); i += 4, preg++) { + if (i % 32 == 0) { + printk(KERN_CONT "\n"); + printk(KERN_INFO "%04x:", i); + } + /* skip registers with side-effects */ + if (i == offsetof(struct tx4927_pcic_reg, g2pintack) + || i == offsetof(struct tx4927_pcic_reg, g2pspc) + || i == offsetof(struct tx4927_pcic_reg, g2pcfgadrs) + || i == offsetof(struct tx4927_pcic_reg, g2pcfgdata)) { + printk(KERN_CONT " XXXXXXXX"); + continue; + } + printk(KERN_CONT " %08x", __raw_readl(preg)); + } + printk(KERN_CONT "\n"); +} + +void tx4927_dump_pcic_settings(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(pcicptrs); i++) { + if (pcicptrs[i].pcicptr) + tx4927_dump_pcic_settings1(pcicptrs[i].pcicptr); + } +} + +irqreturn_t tx4927_pcierr_interrupt(int irq, void *dev_id) +{ + struct pt_regs *regs = get_irq_regs(); + struct tx4927_pcic_reg __iomem *pcicptr = + (struct tx4927_pcic_reg __iomem *)(unsigned long)dev_id; + + if (txx9_pci_err_action != TXX9_PCI_ERR_IGNORE) { + printk(KERN_WARNING "PCIERR interrupt at 0x%0*lx\n", + (int)(2 * sizeof(unsigned long)), regs->cp0_epc); + tx4927_report_pcic_status1(pcicptr); + } + if (txx9_pci_err_action != TXX9_PCI_ERR_PANIC) { + /* clear all pci errors */ + __raw_writel((__raw_readl(&pcicptr->pcistatus) & 0x0000ffff) + | (TX4927_PCIC_PCISTATUS_ALL << 16), + &pcicptr->pcistatus); + __raw_writel(TX4927_PCIC_G2PSTATUS_ALL, &pcicptr->g2pstatus); + __raw_writel(TX4927_PCIC_PBASTATUS_ALL, &pcicptr->pbastatus); + __raw_writel(TX4927_PCIC_PCICSTATUS_ALL, &pcicptr->pcicstatus); + return IRQ_HANDLED; + } + console_verbose(); + tx4927_dump_pcic_settings1(pcicptr); + panic("PCI error."); +} + +#ifdef CONFIG_TOSHIBA_FPCIB0 +static void tx4927_quirk_slc90e66_bridge(struct pci_dev *dev) +{ + struct tx4927_pcic_reg __iomem *pcicptr = pci_bus_to_pcicptr(dev->bus); + + if (!pcicptr) + return; + if (__raw_readl(&pcicptr->pbacfg) & TX4927_PCIC_PBACFG_PBAEN) { + /* Reset Bus Arbiter */ + __raw_writel(TX4927_PCIC_PBACFG_RPBA, &pcicptr->pbacfg); + /* + * swap reqBP and reqXP (raise priority of SLC90E66). + * SLC90E66(PCI-ISA bridge) is connected to REQ2 on + * PCI Backplane board. + */ + __raw_writel(0x72543610, &pcicptr->pbareqport); + __raw_writel(0, &pcicptr->pbabm); + /* Use Fixed ParkMaster (required by SLC90E66) */ + __raw_writel(TX4927_PCIC_PBACFG_FIXPA, &pcicptr->pbacfg); + /* Enable Bus Arbiter */ + __raw_writel(TX4927_PCIC_PBACFG_FIXPA | + TX4927_PCIC_PBACFG_PBAEN, + &pcicptr->pbacfg); + printk(KERN_INFO "PCI: Use Fixed Park Master (REQPORT %08x)\n", + __raw_readl(&pcicptr->pbareqport)); + } +} +#define PCI_DEVICE_ID_EFAR_SLC90E66_0 0x9460 +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_0, + tx4927_quirk_slc90e66_bridge); +#endif diff --git a/arch/mips/pci/ops-tx4938.c b/arch/mips/pci/ops-tx4938.c deleted file mode 100644 index 0ff083489ef..00000000000 --- a/arch/mips/pci/ops-tx4938.c +++ /dev/null @@ -1,198 +0,0 @@ -/* - * Define the pci_ops for the Toshiba rbtx4938 - * Copyright (C) 2000-2001 Toshiba Corporation - * - * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the - * terms of the GNU General Public License version 2. This program is - * licensed "as is" without any warranty of any kind, whether express - * or implied. - * - * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com) - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <asm/addrspace.h> -#include <asm/tx4938/rbtx4938.h> - -/* initialize in setup */ -struct resource pci_io_resource = { - .name = "pci IO space", - .start = 0, - .end = 0, - .flags = IORESOURCE_IO -}; - -/* initialize in setup */ -struct resource pci_mem_resource = { - .name = "pci memory space", - .start = 0, - .end = 0, - .flags = IORESOURCE_MEM -}; - -struct resource tx4938_pcic1_pci_io_resource = { - .name = "PCI1 IO", - .start = 0, - .end = 0, - .flags = IORESOURCE_IO -}; -struct resource tx4938_pcic1_pci_mem_resource = { - .name = "PCI1 mem", - .start = 0, - .end = 0, - .flags = IORESOURCE_MEM -}; - -static int mkaddr(int bus, int dev_fn, int where, int *flagsp) -{ - if (bus > 0) { - /* Type 1 configuration */ - tx4938_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) | - ((dev_fn & 0xff) << 0x08) | (where & 0xfc) | 1; - } else { - if (dev_fn >= PCI_DEVFN(TX4938_PCIC_MAX_DEVNU, 0)) - return -1; - - /* Type 0 configuration */ - tx4938_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) | - ((dev_fn & 0xff) << 0x08) | (where & 0xfc); - } - /* clear M_ABORT and Disable M_ABORT Int. */ - tx4938_pcicptr->pcistatus = - (tx4938_pcicptr->pcistatus & 0x0000ffff) | - (PCI_STATUS_REC_MASTER_ABORT << 16); - tx4938_pcicptr->pcimask &= ~PCI_STATUS_REC_MASTER_ABORT; - - return 0; -} - -static int check_abort(int flags) -{ - int code = PCIBIOS_SUCCESSFUL; - /* wait write cycle completion before checking error status */ - while (tx4938_pcicptr->pcicstatus & TX4938_PCIC_PCICSTATUS_IWB) - ; - if (tx4938_pcicptr->pcistatus & (PCI_STATUS_REC_MASTER_ABORT << 16)) { - tx4938_pcicptr->pcistatus = - (tx4938_pcicptr-> - pcistatus & 0x0000ffff) | (PCI_STATUS_REC_MASTER_ABORT - << 16); - tx4938_pcicptr->pcimask |= PCI_STATUS_REC_MASTER_ABORT; - code = PCIBIOS_DEVICE_NOT_FOUND; - } - return code; -} - -static int tx4938_pcibios_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * val) -{ - int flags, retval, dev, busno, func; - - dev = PCI_SLOT(devfn); - func = PCI_FUNC(devfn); - - /* check if the bus is top-level */ - if (bus->parent != NULL) - busno = bus->number; - else { - busno = 0; - } - - if (mkaddr(busno, devfn, where, &flags)) - return -1; - - switch (size) { - case 1: - *val = *(volatile u8 *) ((ulong) & tx4938_pcicptr->g2pcfgdata | -#ifdef __BIG_ENDIAN - ((where & 3) ^ 3)); -#else - (where & 3)); -#endif - break; - case 2: - *val = *(volatile u16 *) ((ulong) & tx4938_pcicptr->g2pcfgdata | -#ifdef __BIG_ENDIAN - ((where & 3) ^ 2)); -#else - (where & 3)); -#endif - break; - case 4: - *val = tx4938_pcicptr->g2pcfgdata; - break; - } - - retval = check_abort(flags); - if (retval == PCIBIOS_DEVICE_NOT_FOUND) - *val = 0xffffffff; - - return retval; -} - -static int tx4938_pcibios_write_config(struct pci_bus *bus, unsigned int devfn, int where, - int size, u32 val) -{ - int flags, dev, busno, func; - - busno = bus->number; - dev = PCI_SLOT(devfn); - func = PCI_FUNC(devfn); - - /* check if the bus is top-level */ - if (bus->parent != NULL) { - busno = bus->number; - } else { - busno = 0; - } - - if (mkaddr(busno, devfn, where, &flags)) - return -1; - - switch (size) { - case 1: - *(volatile u8 *) ((ulong) & tx4938_pcicptr->g2pcfgdata | -#ifdef __BIG_ENDIAN - ((where & 3) ^ 3)) = val; -#else - (where & 3)) = val; -#endif - break; - case 2: - *(volatile u16 *) ((ulong) & tx4938_pcicptr->g2pcfgdata | -#ifdef __BIG_ENDIAN - ((where & 0x3) ^ 0x2)) = val; -#else - (where & 3)) = val; -#endif - break; - case 4: - tx4938_pcicptr->g2pcfgdata = val; - break; - } - - return check_abort(flags); -} - -struct pci_ops tx4938_pci_ops = { - tx4938_pcibios_read_config, - tx4938_pcibios_write_config -}; - -struct pci_controller tx4938_pci_controller[] = { - /* h/w only supports devices 0x00 to 0x14 */ - { - .pci_ops = &tx4938_pci_ops, - .io_resource = &pci_io_resource, - .mem_resource = &pci_mem_resource, - }, - /* h/w only supports devices 0x00 to 0x14 */ - { - .pci_ops = &tx4938_pci_ops, - .io_resource = &tx4938_pcic1_pci_io_resource, - .mem_resource = &tx4938_pcic1_pci_mem_resource, - } -}; diff --git a/arch/mips/pci/ops-vr41xx.c b/arch/mips/pci/ops-vr41xx.c index 900c6b32576..551128c7d92 100644 --- a/arch/mips/pci/ops-vr41xx.c +++ b/arch/mips/pci/ops-vr41xx.c @@ -2,8 +2,8 @@ * ops-vr41xx.c, PCI configuration routines for the PCIU of NEC VR4100 series. * * Copyright (C) 2001-2003 MontaVista Software Inc. - * Author: Yoichi Yuasa <yyuasa@mvista.com or source@mvista.com> - * Copyright (C) 2004-2005 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * Author: Yoichi Yuasa <source@mvista.com> + * Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@linux-mips.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -21,7 +21,7 @@ */ /* * Changes: - * MontaVista Software Inc. <yyuasa@mvista.com> or <source@mvista.com> + * MontaVista Software Inc. <source@mvista.com> * - New creation, NEC VR4122 and VR4131 are supported. */ #include <linux/pci.h> @@ -33,7 +33,7 @@ #define PCICONFAREG (void __iomem *)KSEG1ADDR(0x0f000c18) static inline int set_pci_configuration_address(unsigned char number, - unsigned int devfn, int where) + unsigned int devfn, int where) { if (number == 0) { /* @@ -59,7 +59,7 @@ static inline int set_pci_configuration_address(unsigned char number, } static int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, - int size, uint32_t *val) + int size, uint32_t *val) { uint32_t data; @@ -87,7 +87,7 @@ static int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, } static int pci_config_write(struct pci_bus *bus, unsigned int devfn, int where, - int size, uint32_t val) + int size, uint32_t val) { uint32_t data; int shift; diff --git a/arch/mips/pci/pci-alchemy.c b/arch/mips/pci/pci-alchemy.c new file mode 100644 index 00000000000..563d1f61d6e --- /dev/null +++ b/arch/mips/pci/pci-alchemy.c @@ -0,0 +1,514 @@ +/* + * Alchemy PCI host mode support. + * + * Copyright 2001-2003, 2007-2008 MontaVista Software Inc. + * Author: MontaVista Software, Inc. <source@mvista.com> + * + * Support for all devices (greater than 16) added by David Gathright. + */ + +#include <linux/export.h> +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/platform_device.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/syscore_ops.h> +#include <linux/vmalloc.h> + +#include <asm/dma-coherence.h> +#include <asm/mach-au1x00/au1000.h> +#include <asm/tlbmisc.h> + +#ifdef CONFIG_PCI_DEBUG +#define DBG(x...) printk(KERN_DEBUG x) +#else +#define DBG(x...) do {} while (0) +#endif + +#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_WRITE 1 + +struct alchemy_pci_context { + struct pci_controller alchemy_pci_ctrl; /* leave as first member! */ + void __iomem *regs; /* ctrl base */ + /* tools for wired entry for config space access */ + unsigned long last_elo0; + unsigned long last_elo1; + int wired_entry; + struct vm_struct *pci_cfg_vm; + + unsigned long pm[12]; + + int (*board_map_irq)(const struct pci_dev *d, u8 slot, u8 pin); + int (*board_pci_idsel)(unsigned int devsel, int assert); +}; + +/* for syscore_ops. There's only one PCI controller on Alchemy chips, so this + * should suffice for now. + */ +static struct alchemy_pci_context *__alchemy_pci_ctx; + + +/* IO/MEM resources for PCI. Keep the memres in sync with __fixup_bigphys_addr + * in arch/mips/alchemy/common/setup.c + */ +static struct resource alchemy_pci_def_memres = { + .start = ALCHEMY_PCI_MEMWIN_START, + .end = ALCHEMY_PCI_MEMWIN_END, + .name = "PCI memory space", + .flags = IORESOURCE_MEM +}; + +static struct resource alchemy_pci_def_iores = { + .start = ALCHEMY_PCI_IOWIN_START, + .end = ALCHEMY_PCI_IOWIN_END, + .name = "PCI IO space", + .flags = IORESOURCE_IO +}; + +static void mod_wired_entry(int entry, unsigned long entrylo0, + unsigned long entrylo1, unsigned long entryhi, + unsigned long pagemask) +{ + unsigned long old_pagemask; + unsigned long old_ctx; + + /* Save old context and create impossible VPN2 value */ + old_ctx = read_c0_entryhi() & 0xff; + old_pagemask = read_c0_pagemask(); + write_c0_index(entry); + write_c0_pagemask(pagemask); + write_c0_entryhi(entryhi); + write_c0_entrylo0(entrylo0); + write_c0_entrylo1(entrylo1); + tlb_write_indexed(); + write_c0_entryhi(old_ctx); + write_c0_pagemask(old_pagemask); +} + +static void alchemy_pci_wired_entry(struct alchemy_pci_context *ctx) +{ + ctx->wired_entry = read_c0_wired(); + add_wired_entry(0, 0, (unsigned long)ctx->pci_cfg_vm->addr, PM_4K); + ctx->last_elo0 = ctx->last_elo1 = ~0; +} + +static int config_access(unsigned char access_type, struct pci_bus *bus, + unsigned int dev_fn, unsigned char where, u32 *data) +{ + struct alchemy_pci_context *ctx = bus->sysdata; + unsigned int device = PCI_SLOT(dev_fn); + unsigned int function = PCI_FUNC(dev_fn); + unsigned long offset, status, cfg_base, flags, entryLo0, entryLo1, r; + int error = PCIBIOS_SUCCESSFUL; + + if (device > 19) { + *data = 0xffffffff; + return -1; + } + + local_irq_save(flags); + r = __raw_readl(ctx->regs + PCI_REG_STATCMD) & 0x0000ffff; + r |= PCI_STATCMD_STATUS(0x2000); + __raw_writel(r, ctx->regs + PCI_REG_STATCMD); + wmb(); + + /* Allow board vendors to implement their own off-chip IDSEL. + * If it doesn't succeed, may as well bail out at this point. + */ + if (ctx->board_pci_idsel(device, 1) == 0) { + *data = 0xffffffff; + local_irq_restore(flags); + return -1; + } + + /* Setup the config window */ + if (bus->number == 0) + cfg_base = (1 << device) << 11; + else + cfg_base = 0x80000000 | (bus->number << 16) | (device << 11); + + /* Setup the lower bits of the 36-bit address */ + offset = (function << 8) | (where & ~0x3); + /* Pick up any address that falls below the page mask */ + offset |= cfg_base & ~PAGE_MASK; + + /* Page boundary */ + cfg_base = cfg_base & PAGE_MASK; + + /* To improve performance, if the current device is the same as + * the last device accessed, we don't touch the TLB. + */ + entryLo0 = (6 << 26) | (cfg_base >> 6) | (2 << 3) | 7; + entryLo1 = (6 << 26) | (cfg_base >> 6) | (0x1000 >> 6) | (2 << 3) | 7; + if ((entryLo0 != ctx->last_elo0) || (entryLo1 != ctx->last_elo1)) { + mod_wired_entry(ctx->wired_entry, entryLo0, entryLo1, + (unsigned long)ctx->pci_cfg_vm->addr, PM_4K); + ctx->last_elo0 = entryLo0; + ctx->last_elo1 = entryLo1; + } + + if (access_type == PCI_ACCESS_WRITE) + __raw_writel(*data, ctx->pci_cfg_vm->addr + offset); + else + *data = __raw_readl(ctx->pci_cfg_vm->addr + offset); + wmb(); + + DBG("alchemy-pci: cfg access %d bus %u dev %u at %x dat %x conf %lx\n", + access_type, bus->number, device, where, *data, offset); + + /* check for errors, master abort */ + status = __raw_readl(ctx->regs + PCI_REG_STATCMD); + if (status & (1 << 29)) { + *data = 0xffffffff; + error = -1; + DBG("alchemy-pci: master abort on cfg access %d bus %d dev %d\n", + access_type, bus->number, device); + } else if ((status >> 28) & 0xf) { + DBG("alchemy-pci: PCI ERR detected: dev %d, status %lx\n", + device, (status >> 28) & 0xf); + + /* clear errors */ + __raw_writel(status & 0xf000ffff, ctx->regs + PCI_REG_STATCMD); + + *data = 0xffffffff; + error = -1; + } + + /* Take away the IDSEL. */ + (void)ctx->board_pci_idsel(device, 0); + + local_irq_restore(flags); + return error; +} + +static int read_config_byte(struct pci_bus *bus, unsigned int devfn, + int where, u8 *val) +{ + u32 data; + int ret = config_access(PCI_ACCESS_READ, bus, devfn, where, &data); + + if (where & 1) + data >>= 8; + if (where & 2) + data >>= 16; + *val = data & 0xff; + return ret; +} + +static int read_config_word(struct pci_bus *bus, unsigned int devfn, + int where, u16 *val) +{ + u32 data; + int ret = config_access(PCI_ACCESS_READ, bus, devfn, where, &data); + + if (where & 2) + data >>= 16; + *val = data & 0xffff; + return ret; +} + +static int read_config_dword(struct pci_bus *bus, unsigned int devfn, + int where, u32 *val) +{ + return config_access(PCI_ACCESS_READ, bus, devfn, where, val); +} + +static int write_config_byte(struct pci_bus *bus, unsigned int devfn, + int where, u8 val) +{ + u32 data = 0; + + if (config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) + return -1; + + data = (data & ~(0xff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + + if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data)) + return -1; + + return PCIBIOS_SUCCESSFUL; +} + +static int write_config_word(struct pci_bus *bus, unsigned int devfn, + int where, u16 val) +{ + u32 data = 0; + + if (config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) + return -1; + + data = (data & ~(0xffff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + + if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data)) + return -1; + + return PCIBIOS_SUCCESSFUL; +} + +static int write_config_dword(struct pci_bus *bus, unsigned int devfn, + int where, u32 val) +{ + return config_access(PCI_ACCESS_WRITE, bus, devfn, where, &val); +} + +static int alchemy_pci_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + switch (size) { + case 1: { + u8 _val; + int rc = read_config_byte(bus, devfn, where, &_val); + + *val = _val; + return rc; + } + case 2: { + u16 _val; + int rc = read_config_word(bus, devfn, where, &_val); + + *val = _val; + return rc; + } + default: + return read_config_dword(bus, devfn, where, val); + } +} + +static int alchemy_pci_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + switch (size) { + case 1: + return write_config_byte(bus, devfn, where, (u8) val); + case 2: + return write_config_word(bus, devfn, where, (u16) val); + default: + return write_config_dword(bus, devfn, where, val); + } +} + +static struct pci_ops alchemy_pci_ops = { + .read = alchemy_pci_read, + .write = alchemy_pci_write, +}; + +static int alchemy_pci_def_idsel(unsigned int devsel, int assert) +{ + return 1; /* success */ +} + +/* save PCI controller register contents. */ +static int alchemy_pci_suspend(void) +{ + struct alchemy_pci_context *ctx = __alchemy_pci_ctx; + if (!ctx) + return 0; + + ctx->pm[0] = __raw_readl(ctx->regs + PCI_REG_CMEM); + ctx->pm[1] = __raw_readl(ctx->regs + PCI_REG_CONFIG) & 0x0009ffff; + ctx->pm[2] = __raw_readl(ctx->regs + PCI_REG_B2BMASK_CCH); + ctx->pm[3] = __raw_readl(ctx->regs + PCI_REG_B2BBASE0_VID); + ctx->pm[4] = __raw_readl(ctx->regs + PCI_REG_B2BBASE1_SID); + ctx->pm[5] = __raw_readl(ctx->regs + PCI_REG_MWMASK_DEV); + ctx->pm[6] = __raw_readl(ctx->regs + PCI_REG_MWBASE_REV_CCL); + ctx->pm[7] = __raw_readl(ctx->regs + PCI_REG_ID); + ctx->pm[8] = __raw_readl(ctx->regs + PCI_REG_CLASSREV); + ctx->pm[9] = __raw_readl(ctx->regs + PCI_REG_PARAM); + ctx->pm[10] = __raw_readl(ctx->regs + PCI_REG_MBAR); + ctx->pm[11] = __raw_readl(ctx->regs + PCI_REG_TIMEOUT); + + return 0; +} + +static void alchemy_pci_resume(void) +{ + struct alchemy_pci_context *ctx = __alchemy_pci_ctx; + if (!ctx) + return; + + __raw_writel(ctx->pm[0], ctx->regs + PCI_REG_CMEM); + __raw_writel(ctx->pm[2], ctx->regs + PCI_REG_B2BMASK_CCH); + __raw_writel(ctx->pm[3], ctx->regs + PCI_REG_B2BBASE0_VID); + __raw_writel(ctx->pm[4], ctx->regs + PCI_REG_B2BBASE1_SID); + __raw_writel(ctx->pm[5], ctx->regs + PCI_REG_MWMASK_DEV); + __raw_writel(ctx->pm[6], ctx->regs + PCI_REG_MWBASE_REV_CCL); + __raw_writel(ctx->pm[7], ctx->regs + PCI_REG_ID); + __raw_writel(ctx->pm[8], ctx->regs + PCI_REG_CLASSREV); + __raw_writel(ctx->pm[9], ctx->regs + PCI_REG_PARAM); + __raw_writel(ctx->pm[10], ctx->regs + PCI_REG_MBAR); + __raw_writel(ctx->pm[11], ctx->regs + PCI_REG_TIMEOUT); + wmb(); + __raw_writel(ctx->pm[1], ctx->regs + PCI_REG_CONFIG); + wmb(); + + /* YAMON on all db1xxx boards wipes the TLB and writes zero to C0_wired + * on resume, making it necessary to recreate it as soon as possible. + */ + ctx->wired_entry = 8191; /* impossibly high value */ + alchemy_pci_wired_entry(ctx); /* install it */ +} + +static struct syscore_ops alchemy_pci_pmops = { + .suspend = alchemy_pci_suspend, + .resume = alchemy_pci_resume, +}; + +static int alchemy_pci_probe(struct platform_device *pdev) +{ + struct alchemy_pci_platdata *pd = pdev->dev.platform_data; + struct alchemy_pci_context *ctx; + void __iomem *virt_io; + unsigned long val; + struct resource *r; + int ret; + + /* need at least PCI IRQ mapping table */ + if (!pd) { + dev_err(&pdev->dev, "need platform data for PCI setup\n"); + ret = -ENODEV; + goto out; + } + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) { + dev_err(&pdev->dev, "no memory for pcictl context\n"); + ret = -ENOMEM; + goto out; + } + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) { + dev_err(&pdev->dev, "no pcictl ctrl regs resource\n"); + ret = -ENODEV; + goto out1; + } + + if (!request_mem_region(r->start, resource_size(r), pdev->name)) { + dev_err(&pdev->dev, "cannot claim pci regs\n"); + ret = -ENODEV; + goto out1; + } + + ctx->regs = ioremap_nocache(r->start, resource_size(r)); + if (!ctx->regs) { + dev_err(&pdev->dev, "cannot map pci regs\n"); + ret = -ENODEV; + goto out2; + } + + /* map parts of the PCI IO area */ + /* REVISIT: if this changes with a newer variant (doubt it) make this + * a platform resource. + */ + virt_io = ioremap(AU1500_PCI_IO_PHYS_ADDR, 0x00100000); + if (!virt_io) { + dev_err(&pdev->dev, "cannot remap pci io space\n"); + ret = -ENODEV; + goto out3; + } + ctx->alchemy_pci_ctrl.io_map_base = (unsigned long)virt_io; + + /* Au1500 revisions older than AD have borked coherent PCI */ + if ((alchemy_get_cputype() == ALCHEMY_CPU_AU1500) && + (read_c0_prid() < 0x01030202) && !coherentio) { + val = __raw_readl(ctx->regs + PCI_REG_CONFIG); + val |= PCI_CONFIG_NC; + __raw_writel(val, ctx->regs + PCI_REG_CONFIG); + wmb(); + dev_info(&pdev->dev, "non-coherent PCI on Au1500 AA/AB/AC\n"); + } + + if (pd->board_map_irq) + ctx->board_map_irq = pd->board_map_irq; + + if (pd->board_pci_idsel) + ctx->board_pci_idsel = pd->board_pci_idsel; + else + ctx->board_pci_idsel = alchemy_pci_def_idsel; + + /* fill in relevant pci_controller members */ + ctx->alchemy_pci_ctrl.pci_ops = &alchemy_pci_ops; + ctx->alchemy_pci_ctrl.mem_resource = &alchemy_pci_def_memres; + ctx->alchemy_pci_ctrl.io_resource = &alchemy_pci_def_iores; + + /* we can't ioremap the entire pci config space because it's too large, + * nor can we dynamically ioremap it because some drivers use the + * PCI config routines from within atomic contex and that becomes a + * problem in get_vm_area(). Instead we use one wired TLB entry to + * handle all config accesses for all busses. + */ + ctx->pci_cfg_vm = get_vm_area(0x2000, VM_IOREMAP); + if (!ctx->pci_cfg_vm) { + dev_err(&pdev->dev, "unable to get vm area\n"); + ret = -ENOMEM; + goto out4; + } + ctx->wired_entry = 8191; /* impossibly high value */ + alchemy_pci_wired_entry(ctx); /* install it */ + + set_io_port_base((unsigned long)ctx->alchemy_pci_ctrl.io_map_base); + + /* board may want to modify bits in the config register, do it now */ + val = __raw_readl(ctx->regs + PCI_REG_CONFIG); + val &= ~pd->pci_cfg_clr; + val |= pd->pci_cfg_set; + val &= ~PCI_CONFIG_PD; /* clear disable bit */ + __raw_writel(val, ctx->regs + PCI_REG_CONFIG); + wmb(); + + __alchemy_pci_ctx = ctx; + platform_set_drvdata(pdev, ctx); + register_syscore_ops(&alchemy_pci_pmops); + register_pci_controller(&ctx->alchemy_pci_ctrl); + + return 0; + +out4: + iounmap(virt_io); +out3: + iounmap(ctx->regs); +out2: + release_mem_region(r->start, resource_size(r)); +out1: + kfree(ctx); +out: + return ret; +} + +static struct platform_driver alchemy_pcictl_driver = { + .probe = alchemy_pci_probe, + .driver = { + .name = "alchemy-pci", + .owner = THIS_MODULE, + }, +}; + +static int __init alchemy_pci_init(void) +{ + /* Au1500/Au1550 have PCI */ + switch (alchemy_get_cputype()) { + case ALCHEMY_CPU_AU1500: + case ALCHEMY_CPU_AU1550: + return platform_driver_register(&alchemy_pcictl_driver); + } + return 0; +} +arch_initcall(alchemy_pci_init); + + +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + struct alchemy_pci_context *ctx = dev->sysdata; + if (ctx && ctx->board_map_irq) + return ctx->board_map_irq(dev, slot, pin); + return -1; +} + +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} diff --git a/arch/mips/pci/pci-ar71xx.c b/arch/mips/pci/pci-ar71xx.c new file mode 100644 index 00000000000..d471a26dd5f --- /dev/null +++ b/arch/mips/pci/pci-ar71xx.c @@ -0,0 +1,428 @@ +/* + * Atheros AR71xx PCI host controller driver + * + * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * Parts of this file are based on Atheros' 2.6.15 BSP + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/resource.h> +#include <linux/types.h> +#include <linux/delay.h> +#include <linux/bitops.h> +#include <linux/pci.h> +#include <linux/pci_regs.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +#include <asm/mach-ath79/ar71xx_regs.h> +#include <asm/mach-ath79/ath79.h> + +#define AR71XX_PCI_REG_CRP_AD_CBE 0x00 +#define AR71XX_PCI_REG_CRP_WRDATA 0x04 +#define AR71XX_PCI_REG_CRP_RDDATA 0x08 +#define AR71XX_PCI_REG_CFG_AD 0x0c +#define AR71XX_PCI_REG_CFG_CBE 0x10 +#define AR71XX_PCI_REG_CFG_WRDATA 0x14 +#define AR71XX_PCI_REG_CFG_RDDATA 0x18 +#define AR71XX_PCI_REG_PCI_ERR 0x1c +#define AR71XX_PCI_REG_PCI_ERR_ADDR 0x20 +#define AR71XX_PCI_REG_AHB_ERR 0x24 +#define AR71XX_PCI_REG_AHB_ERR_ADDR 0x28 + +#define AR71XX_PCI_CRP_CMD_WRITE 0x00010000 +#define AR71XX_PCI_CRP_CMD_READ 0x00000000 +#define AR71XX_PCI_CFG_CMD_READ 0x0000000a +#define AR71XX_PCI_CFG_CMD_WRITE 0x0000000b + +#define AR71XX_PCI_INT_CORE BIT(4) +#define AR71XX_PCI_INT_DEV2 BIT(2) +#define AR71XX_PCI_INT_DEV1 BIT(1) +#define AR71XX_PCI_INT_DEV0 BIT(0) + +#define AR71XX_PCI_IRQ_COUNT 5 + +struct ar71xx_pci_controller { + void __iomem *cfg_base; + spinlock_t lock; + int irq; + int irq_base; + struct pci_controller pci_ctrl; + struct resource io_res; + struct resource mem_res; +}; + +/* Byte lane enable bits */ +static const u8 ar71xx_pci_ble_table[4][4] = { + {0x0, 0xf, 0xf, 0xf}, + {0xe, 0xd, 0xb, 0x7}, + {0xc, 0xf, 0x3, 0xf}, + {0xf, 0xf, 0xf, 0xf}, +}; + +static const u32 ar71xx_pci_read_mask[8] = { + 0, 0xff, 0xffff, 0, 0xffffffff, 0, 0, 0 +}; + +static inline u32 ar71xx_pci_get_ble(int where, int size, int local) +{ + u32 t; + + t = ar71xx_pci_ble_table[size & 3][where & 3]; + BUG_ON(t == 0xf); + t <<= (local) ? 20 : 4; + + return t; +} + +static inline u32 ar71xx_pci_bus_addr(struct pci_bus *bus, unsigned int devfn, + int where) +{ + u32 ret; + + if (!bus->number) { + /* type 0 */ + ret = (1 << PCI_SLOT(devfn)) | (PCI_FUNC(devfn) << 8) | + (where & ~3); + } else { + /* type 1 */ + ret = (bus->number << 16) | (PCI_SLOT(devfn) << 11) | + (PCI_FUNC(devfn) << 8) | (where & ~3) | 1; + } + + return ret; +} + +static inline struct ar71xx_pci_controller * +pci_bus_to_ar71xx_controller(struct pci_bus *bus) +{ + struct pci_controller *hose; + + hose = (struct pci_controller *) bus->sysdata; + return container_of(hose, struct ar71xx_pci_controller, pci_ctrl); +} + +static int ar71xx_pci_check_error(struct ar71xx_pci_controller *apc, int quiet) +{ + void __iomem *base = apc->cfg_base; + u32 pci_err; + u32 ahb_err; + + pci_err = __raw_readl(base + AR71XX_PCI_REG_PCI_ERR) & 3; + if (pci_err) { + if (!quiet) { + u32 addr; + + addr = __raw_readl(base + AR71XX_PCI_REG_PCI_ERR_ADDR); + pr_crit("ar71xx: %s bus error %d at addr 0x%x\n", + "PCI", pci_err, addr); + } + + /* clear PCI error status */ + __raw_writel(pci_err, base + AR71XX_PCI_REG_PCI_ERR); + } + + ahb_err = __raw_readl(base + AR71XX_PCI_REG_AHB_ERR) & 1; + if (ahb_err) { + if (!quiet) { + u32 addr; + + addr = __raw_readl(base + AR71XX_PCI_REG_AHB_ERR_ADDR); + pr_crit("ar71xx: %s bus error %d at addr 0x%x\n", + "AHB", ahb_err, addr); + } + + /* clear AHB error status */ + __raw_writel(ahb_err, base + AR71XX_PCI_REG_AHB_ERR); + } + + return !!(ahb_err | pci_err); +} + +static inline void ar71xx_pci_local_write(struct ar71xx_pci_controller *apc, + int where, int size, u32 value) +{ + void __iomem *base = apc->cfg_base; + u32 ad_cbe; + + value = value << (8 * (where & 3)); + + ad_cbe = AR71XX_PCI_CRP_CMD_WRITE | (where & ~3); + ad_cbe |= ar71xx_pci_get_ble(where, size, 1); + + __raw_writel(ad_cbe, base + AR71XX_PCI_REG_CRP_AD_CBE); + __raw_writel(value, base + AR71XX_PCI_REG_CRP_WRDATA); +} + +static inline int ar71xx_pci_set_cfgaddr(struct pci_bus *bus, + unsigned int devfn, + int where, int size, u32 cmd) +{ + struct ar71xx_pci_controller *apc = pci_bus_to_ar71xx_controller(bus); + void __iomem *base = apc->cfg_base; + u32 addr; + + addr = ar71xx_pci_bus_addr(bus, devfn, where); + + __raw_writel(addr, base + AR71XX_PCI_REG_CFG_AD); + __raw_writel(cmd | ar71xx_pci_get_ble(where, size, 0), + base + AR71XX_PCI_REG_CFG_CBE); + + return ar71xx_pci_check_error(apc, 1); +} + +static int ar71xx_pci_read_config(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *value) +{ + struct ar71xx_pci_controller *apc = pci_bus_to_ar71xx_controller(bus); + void __iomem *base = apc->cfg_base; + unsigned long flags; + u32 data; + int err; + int ret; + + ret = PCIBIOS_SUCCESSFUL; + data = ~0; + + spin_lock_irqsave(&apc->lock, flags); + + err = ar71xx_pci_set_cfgaddr(bus, devfn, where, size, + AR71XX_PCI_CFG_CMD_READ); + if (err) + ret = PCIBIOS_DEVICE_NOT_FOUND; + else + data = __raw_readl(base + AR71XX_PCI_REG_CFG_RDDATA); + + spin_unlock_irqrestore(&apc->lock, flags); + + *value = (data >> (8 * (where & 3))) & ar71xx_pci_read_mask[size & 7]; + + return ret; +} + +static int ar71xx_pci_write_config(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 value) +{ + struct ar71xx_pci_controller *apc = pci_bus_to_ar71xx_controller(bus); + void __iomem *base = apc->cfg_base; + unsigned long flags; + int err; + int ret; + + value = value << (8 * (where & 3)); + ret = PCIBIOS_SUCCESSFUL; + + spin_lock_irqsave(&apc->lock, flags); + + err = ar71xx_pci_set_cfgaddr(bus, devfn, where, size, + AR71XX_PCI_CFG_CMD_WRITE); + if (err) + ret = PCIBIOS_DEVICE_NOT_FOUND; + else + __raw_writel(value, base + AR71XX_PCI_REG_CFG_WRDATA); + + spin_unlock_irqrestore(&apc->lock, flags); + + return ret; +} + +static struct pci_ops ar71xx_pci_ops = { + .read = ar71xx_pci_read_config, + .write = ar71xx_pci_write_config, +}; + +static void ar71xx_pci_irq_handler(unsigned int irq, struct irq_desc *desc) +{ + struct ar71xx_pci_controller *apc; + void __iomem *base = ath79_reset_base; + u32 pending; + + apc = irq_get_handler_data(irq); + + pending = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_STATUS) & + __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE); + + if (pending & AR71XX_PCI_INT_DEV0) + generic_handle_irq(apc->irq_base + 0); + + else if (pending & AR71XX_PCI_INT_DEV1) + generic_handle_irq(apc->irq_base + 1); + + else if (pending & AR71XX_PCI_INT_DEV2) + generic_handle_irq(apc->irq_base + 2); + + else if (pending & AR71XX_PCI_INT_CORE) + generic_handle_irq(apc->irq_base + 4); + + else + spurious_interrupt(); +} + +static void ar71xx_pci_irq_unmask(struct irq_data *d) +{ + struct ar71xx_pci_controller *apc; + unsigned int irq; + void __iomem *base = ath79_reset_base; + u32 t; + + apc = irq_data_get_irq_chip_data(d); + irq = d->irq - apc->irq_base; + + t = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE); + __raw_writel(t | (1 << irq), base + AR71XX_RESET_REG_PCI_INT_ENABLE); + + /* flush write */ + __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE); +} + +static void ar71xx_pci_irq_mask(struct irq_data *d) +{ + struct ar71xx_pci_controller *apc; + unsigned int irq; + void __iomem *base = ath79_reset_base; + u32 t; + + apc = irq_data_get_irq_chip_data(d); + irq = d->irq - apc->irq_base; + + t = __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE); + __raw_writel(t & ~(1 << irq), base + AR71XX_RESET_REG_PCI_INT_ENABLE); + + /* flush write */ + __raw_readl(base + AR71XX_RESET_REG_PCI_INT_ENABLE); +} + +static struct irq_chip ar71xx_pci_irq_chip = { + .name = "AR71XX PCI", + .irq_mask = ar71xx_pci_irq_mask, + .irq_unmask = ar71xx_pci_irq_unmask, + .irq_mask_ack = ar71xx_pci_irq_mask, +}; + +static void ar71xx_pci_irq_init(struct ar71xx_pci_controller *apc) +{ + void __iomem *base = ath79_reset_base; + int i; + + __raw_writel(0, base + AR71XX_RESET_REG_PCI_INT_ENABLE); + __raw_writel(0, base + AR71XX_RESET_REG_PCI_INT_STATUS); + + BUILD_BUG_ON(ATH79_PCI_IRQ_COUNT < AR71XX_PCI_IRQ_COUNT); + + apc->irq_base = ATH79_PCI_IRQ_BASE; + for (i = apc->irq_base; + i < apc->irq_base + AR71XX_PCI_IRQ_COUNT; i++) { + irq_set_chip_and_handler(i, &ar71xx_pci_irq_chip, + handle_level_irq); + irq_set_chip_data(i, apc); + } + + irq_set_handler_data(apc->irq, apc); + irq_set_chained_handler(apc->irq, ar71xx_pci_irq_handler); +} + +static void ar71xx_pci_reset(void) +{ + void __iomem *ddr_base = ath79_ddr_base; + + ath79_device_reset_set(AR71XX_RESET_PCI_BUS | AR71XX_RESET_PCI_CORE); + mdelay(100); + + ath79_device_reset_clear(AR71XX_RESET_PCI_BUS | AR71XX_RESET_PCI_CORE); + mdelay(100); + + __raw_writel(AR71XX_PCI_WIN0_OFFS, ddr_base + AR71XX_DDR_REG_PCI_WIN0); + __raw_writel(AR71XX_PCI_WIN1_OFFS, ddr_base + AR71XX_DDR_REG_PCI_WIN1); + __raw_writel(AR71XX_PCI_WIN2_OFFS, ddr_base + AR71XX_DDR_REG_PCI_WIN2); + __raw_writel(AR71XX_PCI_WIN3_OFFS, ddr_base + AR71XX_DDR_REG_PCI_WIN3); + __raw_writel(AR71XX_PCI_WIN4_OFFS, ddr_base + AR71XX_DDR_REG_PCI_WIN4); + __raw_writel(AR71XX_PCI_WIN5_OFFS, ddr_base + AR71XX_DDR_REG_PCI_WIN5); + __raw_writel(AR71XX_PCI_WIN6_OFFS, ddr_base + AR71XX_DDR_REG_PCI_WIN6); + __raw_writel(AR71XX_PCI_WIN7_OFFS, ddr_base + AR71XX_DDR_REG_PCI_WIN7); + + mdelay(100); +} + +static int ar71xx_pci_probe(struct platform_device *pdev) +{ + struct ar71xx_pci_controller *apc; + struct resource *res; + u32 t; + + apc = devm_kzalloc(&pdev->dev, sizeof(struct ar71xx_pci_controller), + GFP_KERNEL); + if (!apc) + return -ENOMEM; + + spin_lock_init(&apc->lock); + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg_base"); + apc->cfg_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(apc->cfg_base)) + return PTR_ERR(apc->cfg_base); + + apc->irq = platform_get_irq(pdev, 0); + if (apc->irq < 0) + return -EINVAL; + + res = platform_get_resource_byname(pdev, IORESOURCE_IO, "io_base"); + if (!res) + return -EINVAL; + + apc->io_res.parent = res; + apc->io_res.name = "PCI IO space"; + apc->io_res.start = res->start; + apc->io_res.end = res->end; + apc->io_res.flags = IORESOURCE_IO; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mem_base"); + if (!res) + return -EINVAL; + + apc->mem_res.parent = res; + apc->mem_res.name = "PCI memory space"; + apc->mem_res.start = res->start; + apc->mem_res.end = res->end; + apc->mem_res.flags = IORESOURCE_MEM; + + ar71xx_pci_reset(); + + /* setup COMMAND register */ + t = PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE + | PCI_COMMAND_PARITY | PCI_COMMAND_SERR | PCI_COMMAND_FAST_BACK; + ar71xx_pci_local_write(apc, PCI_COMMAND, 4, t); + + /* clear bus errors */ + ar71xx_pci_check_error(apc, 1); + + ar71xx_pci_irq_init(apc); + + apc->pci_ctrl.pci_ops = &ar71xx_pci_ops; + apc->pci_ctrl.mem_resource = &apc->mem_res; + apc->pci_ctrl.io_resource = &apc->io_res; + + register_pci_controller(&apc->pci_ctrl); + + return 0; +} + +static struct platform_driver ar71xx_pci_driver = { + .probe = ar71xx_pci_probe, + .driver = { + .name = "ar71xx-pci", + .owner = THIS_MODULE, + }, +}; + +static int __init ar71xx_pci_init(void) +{ + return platform_driver_register(&ar71xx_pci_driver); +} + +postcore_initcall(ar71xx_pci_init); diff --git a/arch/mips/pci/pci-ar724x.c b/arch/mips/pci/pci-ar724x.c new file mode 100644 index 00000000000..785b2659b51 --- /dev/null +++ b/arch/mips/pci/pci-ar724x.c @@ -0,0 +1,435 @@ +/* + * Atheros AR724X PCI host controller driver + * + * Copyright (C) 2011 René Bolldorf <xsecute@googlemail.com> + * Copyright (C) 2009-2011 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/spinlock.h> +#include <linux/irq.h> +#include <linux/pci.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <asm/mach-ath79/ath79.h> +#include <asm/mach-ath79/ar71xx_regs.h> + +#define AR724X_PCI_REG_RESET 0x18 +#define AR724X_PCI_REG_INT_STATUS 0x4c +#define AR724X_PCI_REG_INT_MASK 0x50 + +#define AR724X_PCI_RESET_LINK_UP BIT(0) + +#define AR724X_PCI_INT_DEV0 BIT(14) + +#define AR724X_PCI_IRQ_COUNT 1 + +#define AR7240_BAR0_WAR_VALUE 0xffff + +#define AR724X_PCI_CMD_INIT (PCI_COMMAND_MEMORY | \ + PCI_COMMAND_MASTER | \ + PCI_COMMAND_INVALIDATE | \ + PCI_COMMAND_PARITY | \ + PCI_COMMAND_SERR | \ + PCI_COMMAND_FAST_BACK) + +struct ar724x_pci_controller { + void __iomem *devcfg_base; + void __iomem *ctrl_base; + void __iomem *crp_base; + + int irq; + int irq_base; + + bool link_up; + bool bar0_is_cached; + u32 bar0_value; + + spinlock_t lock; + + struct pci_controller pci_controller; + struct resource io_res; + struct resource mem_res; +}; + +static inline bool ar724x_pci_check_link(struct ar724x_pci_controller *apc) +{ + u32 reset; + + reset = __raw_readl(apc->ctrl_base + AR724X_PCI_REG_RESET); + return reset & AR724X_PCI_RESET_LINK_UP; +} + +static inline struct ar724x_pci_controller * +pci_bus_to_ar724x_controller(struct pci_bus *bus) +{ + struct pci_controller *hose; + + hose = (struct pci_controller *) bus->sysdata; + return container_of(hose, struct ar724x_pci_controller, pci_controller); +} + +static int ar724x_pci_local_write(struct ar724x_pci_controller *apc, + int where, int size, u32 value) +{ + unsigned long flags; + void __iomem *base; + u32 data; + int s; + + WARN_ON(where & (size - 1)); + + if (!apc->link_up) + return PCIBIOS_DEVICE_NOT_FOUND; + + base = apc->crp_base; + + spin_lock_irqsave(&apc->lock, flags); + data = __raw_readl(base + (where & ~3)); + + switch (size) { + case 1: + s = ((where & 3) * 8); + data &= ~(0xff << s); + data |= ((value & 0xff) << s); + break; + case 2: + s = ((where & 2) * 8); + data &= ~(0xffff << s); + data |= ((value & 0xffff) << s); + break; + case 4: + data = value; + break; + default: + spin_unlock_irqrestore(&apc->lock, flags); + return PCIBIOS_BAD_REGISTER_NUMBER; + } + + __raw_writel(data, base + (where & ~3)); + /* flush write */ + __raw_readl(base + (where & ~3)); + spin_unlock_irqrestore(&apc->lock, flags); + + return PCIBIOS_SUCCESSFUL; +} + +static int ar724x_pci_read(struct pci_bus *bus, unsigned int devfn, int where, + int size, uint32_t *value) +{ + struct ar724x_pci_controller *apc; + unsigned long flags; + void __iomem *base; + u32 data; + + apc = pci_bus_to_ar724x_controller(bus); + if (!apc->link_up) + return PCIBIOS_DEVICE_NOT_FOUND; + + if (devfn) + return PCIBIOS_DEVICE_NOT_FOUND; + + base = apc->devcfg_base; + + spin_lock_irqsave(&apc->lock, flags); + data = __raw_readl(base + (where & ~3)); + + switch (size) { + case 1: + if (where & 1) + data >>= 8; + if (where & 2) + data >>= 16; + data &= 0xff; + break; + case 2: + if (where & 2) + data >>= 16; + data &= 0xffff; + break; + case 4: + break; + default: + spin_unlock_irqrestore(&apc->lock, flags); + + return PCIBIOS_BAD_REGISTER_NUMBER; + } + + spin_unlock_irqrestore(&apc->lock, flags); + + if (where == PCI_BASE_ADDRESS_0 && size == 4 && + apc->bar0_is_cached) { + /* use the cached value */ + *value = apc->bar0_value; + } else { + *value = data; + } + + return PCIBIOS_SUCCESSFUL; +} + +static int ar724x_pci_write(struct pci_bus *bus, unsigned int devfn, int where, + int size, uint32_t value) +{ + struct ar724x_pci_controller *apc; + unsigned long flags; + void __iomem *base; + u32 data; + int s; + + apc = pci_bus_to_ar724x_controller(bus); + if (!apc->link_up) + return PCIBIOS_DEVICE_NOT_FOUND; + + if (devfn) + return PCIBIOS_DEVICE_NOT_FOUND; + + if (soc_is_ar7240() && where == PCI_BASE_ADDRESS_0 && size == 4) { + if (value != 0xffffffff) { + /* + * WAR for a hw issue. If the BAR0 register of the + * device is set to the proper base address, the + * memory space of the device is not accessible. + * + * Cache the intended value so it can be read back, + * and write a SoC specific constant value to the + * BAR0 register in order to make the device memory + * accessible. + */ + apc->bar0_is_cached = true; + apc->bar0_value = value; + + value = AR7240_BAR0_WAR_VALUE; + } else { + apc->bar0_is_cached = false; + } + } + + base = apc->devcfg_base; + + spin_lock_irqsave(&apc->lock, flags); + data = __raw_readl(base + (where & ~3)); + + switch (size) { + case 1: + s = ((where & 3) * 8); + data &= ~(0xff << s); + data |= ((value & 0xff) << s); + break; + case 2: + s = ((where & 2) * 8); + data &= ~(0xffff << s); + data |= ((value & 0xffff) << s); + break; + case 4: + data = value; + break; + default: + spin_unlock_irqrestore(&apc->lock, flags); + + return PCIBIOS_BAD_REGISTER_NUMBER; + } + + __raw_writel(data, base + (where & ~3)); + /* flush write */ + __raw_readl(base + (where & ~3)); + spin_unlock_irqrestore(&apc->lock, flags); + + return PCIBIOS_SUCCESSFUL; +} + +static struct pci_ops ar724x_pci_ops = { + .read = ar724x_pci_read, + .write = ar724x_pci_write, +}; + +static void ar724x_pci_irq_handler(unsigned int irq, struct irq_desc *desc) +{ + struct ar724x_pci_controller *apc; + void __iomem *base; + u32 pending; + + apc = irq_get_handler_data(irq); + base = apc->ctrl_base; + + pending = __raw_readl(base + AR724X_PCI_REG_INT_STATUS) & + __raw_readl(base + AR724X_PCI_REG_INT_MASK); + + if (pending & AR724X_PCI_INT_DEV0) + generic_handle_irq(apc->irq_base + 0); + + else + spurious_interrupt(); +} + +static void ar724x_pci_irq_unmask(struct irq_data *d) +{ + struct ar724x_pci_controller *apc; + void __iomem *base; + int offset; + u32 t; + + apc = irq_data_get_irq_chip_data(d); + base = apc->ctrl_base; + offset = apc->irq_base - d->irq; + + switch (offset) { + case 0: + t = __raw_readl(base + AR724X_PCI_REG_INT_MASK); + __raw_writel(t | AR724X_PCI_INT_DEV0, + base + AR724X_PCI_REG_INT_MASK); + /* flush write */ + __raw_readl(base + AR724X_PCI_REG_INT_MASK); + } +} + +static void ar724x_pci_irq_mask(struct irq_data *d) +{ + struct ar724x_pci_controller *apc; + void __iomem *base; + int offset; + u32 t; + + apc = irq_data_get_irq_chip_data(d); + base = apc->ctrl_base; + offset = apc->irq_base - d->irq; + + switch (offset) { + case 0: + t = __raw_readl(base + AR724X_PCI_REG_INT_MASK); + __raw_writel(t & ~AR724X_PCI_INT_DEV0, + base + AR724X_PCI_REG_INT_MASK); + + /* flush write */ + __raw_readl(base + AR724X_PCI_REG_INT_MASK); + + t = __raw_readl(base + AR724X_PCI_REG_INT_STATUS); + __raw_writel(t | AR724X_PCI_INT_DEV0, + base + AR724X_PCI_REG_INT_STATUS); + + /* flush write */ + __raw_readl(base + AR724X_PCI_REG_INT_STATUS); + } +} + +static struct irq_chip ar724x_pci_irq_chip = { + .name = "AR724X PCI ", + .irq_mask = ar724x_pci_irq_mask, + .irq_unmask = ar724x_pci_irq_unmask, + .irq_mask_ack = ar724x_pci_irq_mask, +}; + +static void ar724x_pci_irq_init(struct ar724x_pci_controller *apc, + int id) +{ + void __iomem *base; + int i; + + base = apc->ctrl_base; + + __raw_writel(0, base + AR724X_PCI_REG_INT_MASK); + __raw_writel(0, base + AR724X_PCI_REG_INT_STATUS); + + apc->irq_base = ATH79_PCI_IRQ_BASE + (id * AR724X_PCI_IRQ_COUNT); + + for (i = apc->irq_base; + i < apc->irq_base + AR724X_PCI_IRQ_COUNT; i++) { + irq_set_chip_and_handler(i, &ar724x_pci_irq_chip, + handle_level_irq); + irq_set_chip_data(i, apc); + } + + irq_set_handler_data(apc->irq, apc); + irq_set_chained_handler(apc->irq, ar724x_pci_irq_handler); +} + +static int ar724x_pci_probe(struct platform_device *pdev) +{ + struct ar724x_pci_controller *apc; + struct resource *res; + int id; + + id = pdev->id; + if (id == -1) + id = 0; + + apc = devm_kzalloc(&pdev->dev, sizeof(struct ar724x_pci_controller), + GFP_KERNEL); + if (!apc) + return -ENOMEM; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ctrl_base"); + apc->ctrl_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(apc->ctrl_base)) + return PTR_ERR(apc->ctrl_base); + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "cfg_base"); + apc->devcfg_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(apc->devcfg_base)) + return PTR_ERR(apc->devcfg_base); + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "crp_base"); + apc->crp_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(apc->crp_base)) + return PTR_ERR(apc->crp_base); + + apc->irq = platform_get_irq(pdev, 0); + if (apc->irq < 0) + return -EINVAL; + + spin_lock_init(&apc->lock); + + res = platform_get_resource_byname(pdev, IORESOURCE_IO, "io_base"); + if (!res) + return -EINVAL; + + apc->io_res.parent = res; + apc->io_res.name = "PCI IO space"; + apc->io_res.start = res->start; + apc->io_res.end = res->end; + apc->io_res.flags = IORESOURCE_IO; + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mem_base"); + if (!res) + return -EINVAL; + + apc->mem_res.parent = res; + apc->mem_res.name = "PCI memory space"; + apc->mem_res.start = res->start; + apc->mem_res.end = res->end; + apc->mem_res.flags = IORESOURCE_MEM; + + apc->pci_controller.pci_ops = &ar724x_pci_ops; + apc->pci_controller.io_resource = &apc->io_res; + apc->pci_controller.mem_resource = &apc->mem_res; + + apc->link_up = ar724x_pci_check_link(apc); + if (!apc->link_up) + dev_warn(&pdev->dev, "PCIe link is down\n"); + + ar724x_pci_irq_init(apc, id); + + ar724x_pci_local_write(apc, PCI_COMMAND, 4, AR724X_PCI_CMD_INIT); + + register_pci_controller(&apc->pci_controller); + + return 0; +} + +static struct platform_driver ar724x_pci_driver = { + .probe = ar724x_pci_probe, + .driver = { + .name = "ar724x-pci", + .owner = THIS_MODULE, + }, +}; + +static int __init ar724x_pci_init(void) +{ + return platform_driver_register(&ar724x_pci_driver); +} + +postcore_initcall(ar724x_pci_init); diff --git a/arch/mips/pci/pci-bcm1480.c b/arch/mips/pci/pci-bcm1480.c index f4ef1a35ca1..5ec2a7bae02 100644 --- a/arch/mips/pci/pci-bcm1480.c +++ b/arch/mips/pci/pci-bcm1480.c @@ -32,7 +32,6 @@ * * XXX: AT THIS TIME, ONLY the NATIVE PCI-X INTERFACE IS SUPPORTED. */ -#include <linux/config.h> #include <linux/types.h> #include <linux/pci.h> #include <linux/kernel.h> @@ -40,6 +39,7 @@ #include <linux/mm.h> #include <linux/console.h> #include <linux/tty.h> +#include <linux/vt.h> #include <asm/sibyte/bcm1480_regs.h> #include <asm/sibyte/bcm1480_scd.h> @@ -50,15 +50,15 @@ * Macros for calculating offsets into config space given a device * structure or dev/fun/reg */ -#define CFGOFFSET(bus,devfn,where) (((bus)<<16)+((devfn)<<8)+(where)) -#define CFGADDR(bus,devfn,where) CFGOFFSET((bus)->number,(devfn),where) +#define CFGOFFSET(bus, devfn, where) (((bus)<<16)+((devfn)<<8)+(where)) +#define CFGADDR(bus, devfn, where) CFGOFFSET((bus)->number, (devfn), where) static void *cfg_space; -#define PCI_BUS_ENABLED 1 -#define PCI_DEVICE_MODE 2 +#define PCI_BUS_ENABLED 1 +#define PCI_DEVICE_MODE 2 -static int bcm1480_bus_status = 0; +static int bcm1480_bus_status; #define PCI_BRIDGE_DEVICE 0 @@ -75,9 +75,12 @@ static inline void WRITECFG32(u32 addr, u32 data) *(u32 *)(cfg_space + (addr & ~3)) = data; } -int pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { - return dev->irq; + if (pin == 0) + return -1; + + return K_BCM1480_INT_PCI_INTA - 1 + pin; } /* Do platform specific device initialization at pci_enable_device() time */ @@ -176,15 +179,15 @@ struct pci_ops bcm1480_pci_ops = { static struct resource bcm1480_mem_resource = { .name = "BCM1480 PCI MEM", - .start = 0x30000000UL, - .end = 0x3fffffffUL, + .start = A_BCM1480_PHYS_PCI_MEM_MATCH_BYTES, + .end = A_BCM1480_PHYS_PCI_MEM_MATCH_BYTES + 0xfffffffUL, .flags = IORESOURCE_MEM, }; static struct resource bcm1480_io_resource = { .name = "BCM1480 PCI I/O", - .start = 0x2c000000UL, - .end = 0x2dffffffUL, + .start = A_BCM1480_PHYS_PCI_IO_MATCH_BYTES, + .end = A_BCM1480_PHYS_PCI_IO_MATCH_BYTES + 0x1ffffffUL, .flags = IORESOURCE_IO, }; @@ -192,6 +195,7 @@ struct pci_controller bcm1480_controller = { .pci_ops = &bcm1480_pci_ops, .mem_resource = &bcm1480_mem_resource, .io_resource = &bcm1480_io_resource, + .io_offset = A_BCM1480_PHYS_PCI_IO_MATCH_BYTES, }; @@ -199,16 +203,15 @@ static int __init bcm1480_pcibios_init(void) { uint32_t cmdreg; uint64_t reg; - extern int pci_probe_only; /* CFE will assign PCI resources */ - pci_probe_only = 1; + pci_set_flags(PCI_PROBE_ONLY); /* Avoid ISA compat ranges. */ PCIBIOS_MIN_IO = 0x00008000UL; PCIBIOS_MIN_MEM = 0x01000000UL; - /* Set I/O resource limits. - unlimited for now to accomodate HT */ + /* Set I/O resource limits. - unlimited for now to accommodate HT */ ioport_resource.end = 0xffffffffUL; iomem_resource.end = 0xffffffffUL; @@ -217,7 +220,7 @@ static int __init bcm1480_pcibios_init(void) /* * See if the PCI bus has been configured by the firmware. */ - reg = *((volatile uint64_t *) IOADDR(A_SCD_SYSTEM_CFG)); + reg = __raw_readq(IOADDR(A_SCD_SYSTEM_CFG)); if (!(reg & M_BCM1480_SYS_PCI_HOST)) { bcm1480_bus_status |= PCI_DEVICE_MODE; } else { @@ -225,7 +228,7 @@ static int __init bcm1480_pcibios_init(void) PCI_COMMAND)); if (!(cmdreg & PCI_COMMAND_MASTER)) { printk - ("PCI: Skipping PCI probe. Bus is not initialized.\n"); + ("PCI: Skipping PCI probe. Bus is not initialized.\n"); iounmap(cfg_space); return 1; /* XXX */ } @@ -247,15 +250,17 @@ static int __init bcm1480_pcibios_init(void) * XXX ehs: Should this happen in PCI Device mode? */ - set_io_port_base((unsigned long) - ioremap(A_BCM1480_PHYS_PCI_IO_MATCH_BYTES, 65536)); - isa_slot_offset = (unsigned long) - ioremap(A_BCM1480_PHYS_PCI_MEM_MATCH_BYTES, 1024*1024); + bcm1480_controller.io_map_base = (unsigned long) + ioremap(A_BCM1480_PHYS_PCI_IO_MATCH_BYTES, 65536); + bcm1480_controller.io_map_base -= bcm1480_controller.io_offset; + set_io_port_base(bcm1480_controller.io_map_base); register_pci_controller(&bcm1480_controller); #ifdef CONFIG_VGA_CONSOLE - take_over_console(&vga_con,0,MAX_NR_CONSOLES-1,1); + console_lock(); + do_take_over_console(&vga_con, 0, MAX_NR_CONSOLES-1, 1); + console_unlock(); #endif return 0; } diff --git a/arch/mips/pci/pci-bcm1480ht.c b/arch/mips/pci/pci-bcm1480ht.c index a3eebe5890a..1263c5e7dbe 100644 --- a/arch/mips/pci/pci-bcm1480ht.c +++ b/arch/mips/pci/pci-bcm1480ht.c @@ -31,7 +31,6 @@ * problem. * */ -#include <linux/config.h> #include <linux/types.h> #include <linux/pci.h> #include <linux/kernel.h> @@ -49,15 +48,15 @@ * Macros for calculating offsets into config space given a device * structure or dev/fun/reg */ -#define CFGOFFSET(bus,devfn,where) (((bus)<<16)+((devfn)<<8)+(where)) -#define CFGADDR(bus,devfn,where) CFGOFFSET((bus)->number,(devfn),where) +#define CFGOFFSET(bus, devfn, where) (((bus)<<16)+((devfn)<<8)+(where)) +#define CFGADDR(bus, devfn, where) CFGOFFSET((bus)->number, (devfn), where) static void *ht_cfg_space; -#define PCI_BUS_ENABLED 1 -#define PCI_DEVICE_MODE 2 +#define PCI_BUS_ENABLED 1 +#define PCI_DEVICE_MODE 2 -static int bcm1480ht_bus_status = 0; +static int bcm1480ht_bus_status; #define PCI_BRIDGE_DEVICE 0 #define HT_BRIDGE_DEVICE 1 @@ -174,15 +173,15 @@ struct pci_ops bcm1480ht_pci_ops = { static struct resource bcm1480ht_mem_resource = { .name = "BCM1480 HT MEM", - .start = 0x40000000UL, - .end = 0x5fffffffUL, + .start = A_BCM1480_PHYS_HT_MEM_MATCH_BYTES, + .end = A_BCM1480_PHYS_HT_MEM_MATCH_BYTES + 0x1fffffffUL, .flags = IORESOURCE_MEM, }; static struct resource bcm1480ht_io_resource = { .name = "BCM1480 HT I/O", - .start = 0x00000000UL, - .end = 0x01ffffffUL, + .start = A_BCM1480_PHYS_HT_IO_MATCH_BYTES, + .end = A_BCM1480_PHYS_HT_IO_MATCH_BYTES + 0x01ffffffUL, .flags = IORESOURCE_IO, }; @@ -192,29 +191,22 @@ struct pci_controller bcm1480ht_controller = { .io_resource = &bcm1480ht_io_resource, .index = 1, .get_busno = bcm1480ht_pcibios_get_busno, + .io_offset = A_BCM1480_PHYS_HT_IO_MATCH_BYTES, }; static int __init bcm1480ht_pcibios_init(void) { - uint32_t cmdreg; - ht_cfg_space = ioremap(A_BCM1480_PHYS_HT_CFG_MATCH_BITS, 16*1024*1024); - /* - * See if the PCI bus has been configured by the firmware. - */ - cmdreg = READCFG32(CFGOFFSET(0, PCI_DEVFN(PCI_BRIDGE_DEVICE, 0), - PCI_COMMAND)); - if (!(cmdreg & PCI_COMMAND_MASTER)) { - printk("HT: Skipping HT probe. Bus is not initialized.\n"); - iounmap(ht_cfg_space); - return 1; /* XXX */ - } + /* CFE doesn't always init all HT paths, so we always scan */ bcm1480ht_bus_status |= PCI_BUS_ENABLED; ht_eoi_space = (unsigned long) ioremap(A_BCM1480_PHYS_HT_SPECIAL_MATCH_BYTES, 4 * 1024 * 1024); + bcm1480ht_controller.io_map_base = (unsigned long) + ioremap(A_BCM1480_PHYS_HT_IO_MATCH_BYTES, 65536); + bcm1480ht_controller.io_map_base -= bcm1480ht_controller.io_offset; register_pci_controller(&bcm1480ht_controller); diff --git a/arch/mips/pci/pci-bcm47xx.c b/arch/mips/pci/pci-bcm47xx.c new file mode 100644 index 00000000000..76f16eaed0a --- /dev/null +++ b/arch/mips/pci/pci-bcm47xx.c @@ -0,0 +1,104 @@ +/* + * Copyright (C) 2008 Aurelien Jarno <aurelien@aurel32.net> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/ssb/ssb.h> +#include <linux/bcma/bcma.h> +#include <bcm47xx.h> + +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + return 0; +} + +#ifdef CONFIG_BCM47XX_SSB +static int bcm47xx_pcibios_plat_dev_init_ssb(struct pci_dev *dev) +{ + int res; + u8 slot, pin; + + res = ssb_pcibios_plat_dev_init(dev); + if (res < 0) { + printk(KERN_ALERT "PCI: Failed to init device %s\n", + pci_name(dev)); + return res; + } + + pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin); + slot = PCI_SLOT(dev->devfn); + res = ssb_pcibios_map_irq(dev, slot, pin); + + /* IRQ-0 and IRQ-1 are software interrupts. */ + if (res < 2) { + printk(KERN_ALERT "PCI: Failed to map IRQ of device %s\n", + pci_name(dev)); + return res; + } + + dev->irq = res; + return 0; +} +#endif + +#ifdef CONFIG_BCM47XX_BCMA +static int bcm47xx_pcibios_plat_dev_init_bcma(struct pci_dev *dev) +{ + int res; + + res = bcma_core_pci_plat_dev_init(dev); + if (res < 0) { + printk(KERN_ALERT "PCI: Failed to init device %s\n", + pci_name(dev)); + return res; + } + + res = bcma_core_pci_pcibios_map_irq(dev); + + /* IRQ-0 and IRQ-1 are software interrupts. */ + if (res < 2) { + printk(KERN_ALERT "PCI: Failed to map IRQ of device %s\n", + pci_name(dev)); + return res; + } + + dev->irq = res; + return 0; +} +#endif + +int pcibios_plat_dev_init(struct pci_dev *dev) +{ +#ifdef CONFIG_BCM47XX_SSB + if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_SSB) + return bcm47xx_pcibios_plat_dev_init_ssb(dev); + else +#endif +#ifdef CONFIG_BCM47XX_BCMA + if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) + return bcm47xx_pcibios_plat_dev_init_bcma(dev); + else +#endif + return 0; +} diff --git a/arch/mips/pci/pci-bcm63xx.c b/arch/mips/pci/pci-bcm63xx.c new file mode 100644 index 00000000000..151d9b5870b --- /dev/null +++ b/arch/mips/pci/pci-bcm63xx.c @@ -0,0 +1,351 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> + */ + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/clk.h> +#include <asm/bootinfo.h> + +#include <bcm63xx_reset.h> + +#include "pci-bcm63xx.h" + +/* + * Allow PCI to be disabled at runtime depending on board nvram + * configuration + */ +int bcm63xx_pci_enabled; + +static struct resource bcm_pci_mem_resource = { + .name = "bcm63xx PCI memory space", + .start = BCM_PCI_MEM_BASE_PA, + .end = BCM_PCI_MEM_END_PA, + .flags = IORESOURCE_MEM +}; + +static struct resource bcm_pci_io_resource = { + .name = "bcm63xx PCI IO space", + .start = BCM_PCI_IO_BASE_PA, +#ifdef CONFIG_CARDBUS + .end = BCM_PCI_IO_HALF_PA, +#else + .end = BCM_PCI_IO_END_PA, +#endif + .flags = IORESOURCE_IO +}; + +struct pci_controller bcm63xx_controller = { + .pci_ops = &bcm63xx_pci_ops, + .io_resource = &bcm_pci_io_resource, + .mem_resource = &bcm_pci_mem_resource, +}; + +/* + * We handle cardbus via a fake Cardbus bridge, memory and io spaces + * have to be clearly separated from PCI one since we have different + * memory decoder. + */ +#ifdef CONFIG_CARDBUS +static struct resource bcm_cb_mem_resource = { + .name = "bcm63xx Cardbus memory space", + .start = BCM_CB_MEM_BASE_PA, + .end = BCM_CB_MEM_END_PA, + .flags = IORESOURCE_MEM +}; + +static struct resource bcm_cb_io_resource = { + .name = "bcm63xx Cardbus IO space", + .start = BCM_PCI_IO_HALF_PA + 1, + .end = BCM_PCI_IO_END_PA, + .flags = IORESOURCE_IO +}; + +struct pci_controller bcm63xx_cb_controller = { + .pci_ops = &bcm63xx_cb_ops, + .io_resource = &bcm_cb_io_resource, + .mem_resource = &bcm_cb_mem_resource, +}; +#endif + +static struct resource bcm_pcie_mem_resource = { + .name = "bcm63xx PCIe memory space", + .start = BCM_PCIE_MEM_BASE_PA, + .end = BCM_PCIE_MEM_END_PA, + .flags = IORESOURCE_MEM, +}; + +static struct resource bcm_pcie_io_resource = { + .name = "bcm63xx PCIe IO space", + .start = 0, + .end = 0, + .flags = 0, +}; + +struct pci_controller bcm63xx_pcie_controller = { + .pci_ops = &bcm63xx_pcie_ops, + .io_resource = &bcm_pcie_io_resource, + .mem_resource = &bcm_pcie_mem_resource, +}; + +static u32 bcm63xx_int_cfg_readl(u32 reg) +{ + u32 tmp; + + tmp = reg & MPI_PCICFGCTL_CFGADDR_MASK; + tmp |= MPI_PCICFGCTL_WRITEEN_MASK; + bcm_mpi_writel(tmp, MPI_PCICFGCTL_REG); + iob(); + return bcm_mpi_readl(MPI_PCICFGDATA_REG); +} + +static void bcm63xx_int_cfg_writel(u32 val, u32 reg) +{ + u32 tmp; + + tmp = reg & MPI_PCICFGCTL_CFGADDR_MASK; + tmp |= MPI_PCICFGCTL_WRITEEN_MASK; + bcm_mpi_writel(tmp, MPI_PCICFGCTL_REG); + bcm_mpi_writel(val, MPI_PCICFGDATA_REG); +} + +void __iomem *pci_iospace_start; + +static void __init bcm63xx_reset_pcie(void) +{ + u32 val; + u32 reg; + + /* enable SERDES */ + if (BCMCPU_IS_6328()) + reg = MISC_SERDES_CTRL_6328_REG; + else + reg = MISC_SERDES_CTRL_6362_REG; + + val = bcm_misc_readl(reg); + val |= SERDES_PCIE_EN | SERDES_PCIE_EXD_EN; + bcm_misc_writel(val, reg); + + /* reset the PCIe core */ + bcm63xx_core_set_reset(BCM63XX_RESET_PCIE, 1); + bcm63xx_core_set_reset(BCM63XX_RESET_PCIE_EXT, 1); + mdelay(10); + + bcm63xx_core_set_reset(BCM63XX_RESET_PCIE, 0); + mdelay(10); + + bcm63xx_core_set_reset(BCM63XX_RESET_PCIE_EXT, 0); + mdelay(200); +} + +static struct clk *pcie_clk; + +static int __init bcm63xx_register_pcie(void) +{ + u32 val; + + /* enable clock */ + pcie_clk = clk_get(NULL, "pcie"); + if (IS_ERR_OR_NULL(pcie_clk)) + return -ENODEV; + + clk_prepare_enable(pcie_clk); + + bcm63xx_reset_pcie(); + + /* configure the PCIe bridge */ + val = bcm_pcie_readl(PCIE_BRIDGE_OPT1_REG); + val |= OPT1_RD_BE_OPT_EN; + val |= OPT1_RD_REPLY_BE_FIX_EN; + val |= OPT1_PCIE_BRIDGE_HOLE_DET_EN; + val |= OPT1_L1_INT_STATUS_MASK_POL; + bcm_pcie_writel(val, PCIE_BRIDGE_OPT1_REG); + + /* setup the interrupts */ + val = bcm_pcie_readl(PCIE_BRIDGE_RC_INT_MASK_REG); + val |= PCIE_RC_INT_A | PCIE_RC_INT_B | PCIE_RC_INT_C | PCIE_RC_INT_D; + bcm_pcie_writel(val, PCIE_BRIDGE_RC_INT_MASK_REG); + + val = bcm_pcie_readl(PCIE_BRIDGE_OPT2_REG); + /* enable credit checking and error checking */ + val |= OPT2_TX_CREDIT_CHK_EN; + val |= OPT2_UBUS_UR_DECODE_DIS; + + /* set device bus/func for the pcie device */ + val |= (PCIE_BUS_DEVICE << OPT2_CFG_TYPE1_BUS_NO_SHIFT); + val |= OPT2_CFG_TYPE1_BD_SEL; + bcm_pcie_writel(val, PCIE_BRIDGE_OPT2_REG); + + /* setup class code as bridge */ + val = bcm_pcie_readl(PCIE_IDVAL3_REG); + val &= ~IDVAL3_CLASS_CODE_MASK; + val |= (PCI_CLASS_BRIDGE_PCI << IDVAL3_SUBCLASS_SHIFT); + bcm_pcie_writel(val, PCIE_IDVAL3_REG); + + /* disable bar1 size */ + val = bcm_pcie_readl(PCIE_CONFIG2_REG); + val &= ~CONFIG2_BAR1_SIZE_MASK; + bcm_pcie_writel(val, PCIE_CONFIG2_REG); + + /* set bar0 to little endian */ + val = (BCM_PCIE_MEM_BASE_PA >> 20) << BASEMASK_BASE_SHIFT; + val |= (BCM_PCIE_MEM_BASE_PA >> 20) << BASEMASK_MASK_SHIFT; + val |= BASEMASK_REMAP_EN; + bcm_pcie_writel(val, PCIE_BRIDGE_BAR0_BASEMASK_REG); + + val = (BCM_PCIE_MEM_BASE_PA >> 20) << REBASE_ADDR_BASE_SHIFT; + bcm_pcie_writel(val, PCIE_BRIDGE_BAR0_REBASE_ADDR_REG); + + register_pci_controller(&bcm63xx_pcie_controller); + + return 0; +} + +static int __init bcm63xx_register_pci(void) +{ + unsigned int mem_size; + u32 val; + /* + * configuration access are done through IO space, remap 4 + * first bytes to access it from CPU. + * + * this means that no io access from CPU should happen while + * we do a configuration cycle, but there's no way we can add + * a spinlock for each io access, so this is currently kind of + * broken on SMP. + */ + pci_iospace_start = ioremap_nocache(BCM_PCI_IO_BASE_PA, 4); + if (!pci_iospace_start) + return -ENOMEM; + + /* setup local bus to PCI access (PCI memory) */ + val = BCM_PCI_MEM_BASE_PA & MPI_L2P_BASE_MASK; + bcm_mpi_writel(val, MPI_L2PMEMBASE1_REG); + bcm_mpi_writel(~(BCM_PCI_MEM_SIZE - 1), MPI_L2PMEMRANGE1_REG); + bcm_mpi_writel(val | MPI_L2PREMAP_ENABLED_MASK, MPI_L2PMEMREMAP1_REG); + + /* set Cardbus IDSEL (type 0 cfg access on primary bus for + * this IDSEL will be done on Cardbus instead) */ + val = bcm_pcmcia_readl(PCMCIA_C1_REG); + val &= ~PCMCIA_C1_CBIDSEL_MASK; + val |= (CARDBUS_PCI_IDSEL << PCMCIA_C1_CBIDSEL_SHIFT); + bcm_pcmcia_writel(val, PCMCIA_C1_REG); + +#ifdef CONFIG_CARDBUS + /* setup local bus to PCI access (Cardbus memory) */ + val = BCM_CB_MEM_BASE_PA & MPI_L2P_BASE_MASK; + bcm_mpi_writel(val, MPI_L2PMEMBASE2_REG); + bcm_mpi_writel(~(BCM_CB_MEM_SIZE - 1), MPI_L2PMEMRANGE2_REG); + val |= MPI_L2PREMAP_ENABLED_MASK | MPI_L2PREMAP_IS_CARDBUS_MASK; + bcm_mpi_writel(val, MPI_L2PMEMREMAP2_REG); +#else + /* disable second access windows */ + bcm_mpi_writel(0, MPI_L2PMEMREMAP2_REG); +#endif + + /* setup local bus to PCI access (IO memory), we have only 1 + * IO window for both PCI and cardbus, but it cannot handle + * both at the same time, assume standard PCI for now, if + * cardbus card has IO zone, PCI fixup will change window to + * cardbus */ + val = BCM_PCI_IO_BASE_PA & MPI_L2P_BASE_MASK; + bcm_mpi_writel(val, MPI_L2PIOBASE_REG); + bcm_mpi_writel(~(BCM_PCI_IO_SIZE - 1), MPI_L2PIORANGE_REG); + bcm_mpi_writel(val | MPI_L2PREMAP_ENABLED_MASK, MPI_L2PIOREMAP_REG); + + /* enable PCI related GPIO pins */ + bcm_mpi_writel(MPI_LOCBUSCTL_EN_PCI_GPIO_MASK, MPI_LOCBUSCTL_REG); + + /* setup PCI to local bus access, used by PCI device to target + * local RAM while bus mastering */ + bcm63xx_int_cfg_writel(0, PCI_BASE_ADDRESS_3); + if (BCMCPU_IS_3368() || BCMCPU_IS_6358() || BCMCPU_IS_6368()) + val = MPI_SP0_REMAP_ENABLE_MASK; + else + val = 0; + bcm_mpi_writel(val, MPI_SP0_REMAP_REG); + + bcm63xx_int_cfg_writel(0x0, PCI_BASE_ADDRESS_4); + bcm_mpi_writel(0, MPI_SP1_REMAP_REG); + + mem_size = bcm63xx_get_memory_size(); + + /* 6348 before rev b0 exposes only 16 MB of RAM memory through + * PCI, throw a warning if we have more memory */ + if (BCMCPU_IS_6348() && (bcm63xx_get_cpu_rev() & 0xf0) == 0xa0) { + if (mem_size > (16 * 1024 * 1024)) + printk(KERN_WARNING "bcm63xx: this CPU " + "revision cannot handle more than 16MB " + "of RAM for PCI bus mastering\n"); + } else { + /* setup sp0 range to local RAM size */ + bcm_mpi_writel(~(mem_size - 1), MPI_SP0_RANGE_REG); + bcm_mpi_writel(0, MPI_SP1_RANGE_REG); + } + + /* change host bridge retry counter to infinite number of + * retry, needed for some broadcom wifi cards with Silicon + * Backplane bus where access to srom seems very slow */ + val = bcm63xx_int_cfg_readl(BCMPCI_REG_TIMERS); + val &= ~REG_TIMER_RETRY_MASK; + bcm63xx_int_cfg_writel(val, BCMPCI_REG_TIMERS); + + /* enable memory decoder and bus mastering */ + val = bcm63xx_int_cfg_readl(PCI_COMMAND); + val |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); + bcm63xx_int_cfg_writel(val, PCI_COMMAND); + + /* enable read prefetching & disable byte swapping for bus + * mastering transfers */ + val = bcm_mpi_readl(MPI_PCIMODESEL_REG); + val &= ~MPI_PCIMODESEL_BAR1_NOSWAP_MASK; + val &= ~MPI_PCIMODESEL_BAR2_NOSWAP_MASK; + val &= ~MPI_PCIMODESEL_PREFETCH_MASK; + val |= (8 << MPI_PCIMODESEL_PREFETCH_SHIFT); + bcm_mpi_writel(val, MPI_PCIMODESEL_REG); + + /* enable pci interrupt */ + val = bcm_mpi_readl(MPI_LOCINT_REG); + val |= MPI_LOCINT_MASK(MPI_LOCINT_EXT_PCI_INT); + bcm_mpi_writel(val, MPI_LOCINT_REG); + + register_pci_controller(&bcm63xx_controller); + +#ifdef CONFIG_CARDBUS + register_pci_controller(&bcm63xx_cb_controller); +#endif + + /* mark memory space used for IO mapping as reserved */ + request_mem_region(BCM_PCI_IO_BASE_PA, BCM_PCI_IO_SIZE, + "bcm63xx PCI IO space"); + return 0; +} + + +static int __init bcm63xx_pci_init(void) +{ + if (!bcm63xx_pci_enabled) + return -ENODEV; + + switch (bcm63xx_get_cpu_id()) { + case BCM6328_CPU_ID: + case BCM6362_CPU_ID: + return bcm63xx_register_pcie(); + case BCM3368_CPU_ID: + case BCM6348_CPU_ID: + case BCM6358_CPU_ID: + case BCM6368_CPU_ID: + return bcm63xx_register_pci(); + default: + return -ENODEV; + } +} + +arch_initcall(bcm63xx_pci_init); diff --git a/arch/mips/pci/pci-bcm63xx.h b/arch/mips/pci/pci-bcm63xx.h new file mode 100644 index 00000000000..ffab4da7bd0 --- /dev/null +++ b/arch/mips/pci/pci-bcm63xx.h @@ -0,0 +1,32 @@ +#ifndef PCI_BCM63XX_H_ +#define PCI_BCM63XX_H_ + +#include <bcm63xx_cpu.h> +#include <bcm63xx_io.h> +#include <bcm63xx_regs.h> +#include <bcm63xx_dev_pci.h> + +/* + * Cardbus shares the PCI bus, but has no IDSEL, so a special id is + * reserved for it. If you have a standard PCI device at this id, you + * need to change the following definition. + */ +#define CARDBUS_PCI_IDSEL 0x8 + + +#define PCIE_BUS_BRIDGE 0 +#define PCIE_BUS_DEVICE 1 + +/* + * defined in ops-bcm63xx.c + */ +extern struct pci_ops bcm63xx_pci_ops; +extern struct pci_ops bcm63xx_cb_ops; +extern struct pci_ops bcm63xx_pcie_ops; + +/* + * defined in pci-bcm63xx.c + */ +extern void __iomem *pci_iospace_start; + +#endif /* ! PCI_BCM63XX_H_ */ diff --git a/arch/mips/pci/pci-ddb5074.c b/arch/mips/pci/pci-ddb5074.c deleted file mode 100644 index 73f9ceeb2f5..00000000000 --- a/arch/mips/pci/pci-ddb5074.c +++ /dev/null @@ -1,79 +0,0 @@ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/pci.h> - -#include <asm/debug.h> - -#include <asm/ddb5xxx/ddb5xxx.h> - -static struct resource extpci_io_resource = { - "pci IO space", - 0x1000, /* leave some room for ISA bus */ - DDB_PCI_IO_SIZE - 1, - IORESOURCE_IO -}; - -static struct resource extpci_mem_resource = { - "pci memory space", - DDB_PCI_MEM_BASE + 0x00100000, /* leave 1 MB for RTC */ - DDB_PCI_MEM_BASE + DDB_PCI_MEM_SIZE - 1, - IORESOURCE_MEM -}; - -extern struct pci_ops ddb5476_ext_pci_ops; - -struct pci_controller ddb5476_controller = { - .pci_ops = &ddb5476_ext_pci_ops, - .io_resource = &extpci_io_resource, - .mem_resource = &extpci_mem_resource, -}; - -#define PCI_EXT_INTA 8 -#define PCI_EXT_INTB 9 -#define PCI_EXT_INTC 10 -#define PCI_EXT_INTD 11 -#define PCI_EXT_INTE 12 - -#define MAX_SLOT_NUM 14 - -static unsigned char irq_map[MAX_SLOT_NUM] = { - [ 0] = nile4_to_irq(PCI_EXT_INTE), - [ 1] = nile4_to_irq(PCI_EXT_INTA), - [ 2] = nile4_to_irq(PCI_EXT_INTA), - [ 3] = nile4_to_irq(PCI_EXT_INTB), - [ 4] = nile4_to_irq(PCI_EXT_INTC), - [ 5] = nile4_to_irq(NILE4_INT_UART), - [10] = nile4_to_irq(PCI_EXT_INTE), - [13] = nile4_to_irq(PCI_EXT_INTE), -}; - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - return irq_map[slot]; -} - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} - -void __init ddb_pci_reset_bus(void) -{ - u32 temp; - - /* - * I am not sure about the "official" procedure, the following - * steps work as far as I know: - * We first set PCI cold reset bit (bit 31) in PCICTRL-H. - * Then we clear the PCI warm reset bit (bit 30) to 0 in PCICTRL-H. - * The same is true for both PCI channels. - */ - temp = ddb_in32(DDB_PCICTRL + 4); - temp |= 0x80000000; - ddb_out32(DDB_PCICTRL + 4, temp); - temp &= ~0xc0000000; - ddb_out32(DDB_PCICTRL + 4, temp); - -} diff --git a/arch/mips/pci/pci-ddb5476.c b/arch/mips/pci/pci-ddb5476.c deleted file mode 100644 index 90dd4950980..00000000000 --- a/arch/mips/pci/pci-ddb5476.c +++ /dev/null @@ -1,93 +0,0 @@ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/pci.h> - -#include <asm/debug.h> - -#include <asm/ddb5xxx/ddb5xxx.h> - -static struct resource extpci_io_resource = { - "pci IO space", - 0x1000, /* leave some room for ISA bus */ - DDB_PCI_IO_SIZE - 1, - IORESOURCE_IO -}; - -static struct resource extpci_mem_resource = { - "pci memory space", - DDB_PCI_MEM_BASE + 0x00100000, /* leave 1 MB for RTC */ - DDB_PCI_MEM_BASE + DDB_PCI_MEM_SIZE - 1, - IORESOURCE_MEM -}; - -extern struct pci_ops ddb5476_ext_pci_ops; - -struct pci_controller ddb5476_controller = { - .pci_ops = &ddb5476_ext_pci_ops, - .io_resource = &extpci_io_resource, - .mem_resource = &extpci_mem_resource -}; - - -/* - * we fix up irqs based on the slot number. - * The first entry is at AD:11. - * - * This does not work for devices on sub-buses yet. - */ - -/* - * temporary - */ - -#define PCI_EXT_INTA 8 -#define PCI_EXT_INTB 9 -#define PCI_EXT_INTC 10 -#define PCI_EXT_INTD 11 -#define PCI_EXT_INTE 12 - -/* - * based on ddb5477 manual page 11 - */ -#define MAX_SLOT_NUM 21 -static unsigned char irq_map[MAX_SLOT_NUM] = { - [ 2] = 9, /* AD:13 USB */ - [ 3] = 10, /* AD:14 PMU */ - [ 5] = 0, /* AD:16 P2P bridge */ - [ 6] = nile4_to_irq(PCI_EXT_INTB), /* AD:17 */ - [ 7] = nile4_to_irq(PCI_EXT_INTC), /* AD:18 */ - [ 8] = nile4_to_irq(PCI_EXT_INTD), /* AD:19 */ - [ 9] = nile4_to_irq(PCI_EXT_INTA), /* AD:20 */ - [13] = 14, /* AD:24 HD controller, M5229 */ -}; - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - return irq_map[slot]; -} - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} - -void __init ddb_pci_reset_bus(void) -{ - u32 temp; - - /* - * I am not sure about the "official" procedure, the following - * steps work as far as I know: - * We first set PCI cold reset bit (bit 31) in PCICTRL-H. - * Then we clear the PCI warm reset bit (bit 30) to 0 in PCICTRL-H. - * The same is true for both PCI channels. - */ - temp = ddb_in32(DDB_PCICTRL + 4); - temp |= 0x80000000; - ddb_out32(DDB_PCICTRL + 4, temp); - temp &= ~0xc0000000; - ddb_out32(DDB_PCICTRL + 4, temp); - -} diff --git a/arch/mips/pci/pci-ddb5477.c b/arch/mips/pci/pci-ddb5477.c deleted file mode 100644 index 826d653184e..00000000000 --- a/arch/mips/pci/pci-ddb5477.c +++ /dev/null @@ -1,207 +0,0 @@ -/* - * PCI code for DDB5477. - * - * Copyright (C) 2001 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/types.h> -#include <linux/pci.h> - -#include <asm/bootinfo.h> -#include <asm/debug.h> - -#include <asm/ddb5xxx/ddb5xxx.h> - -static struct resource extpci_io_resource = { - "ext pci IO space", - DDB_PCI0_IO_BASE - DDB_PCI_IO_BASE + 0x4000, - DDB_PCI0_IO_BASE - DDB_PCI_IO_BASE + DDB_PCI0_IO_SIZE - 1, - IORESOURCE_IO -}; - -static struct resource extpci_mem_resource = { - "ext pci memory space", - DDB_PCI0_MEM_BASE + 0x100000, - DDB_PCI0_MEM_BASE + DDB_PCI0_MEM_SIZE - 1, - IORESOURCE_MEM -}; - -static struct resource iopci_io_resource = { - "io pci IO space", - DDB_PCI1_IO_BASE - DDB_PCI_IO_BASE, - DDB_PCI1_IO_BASE - DDB_PCI_IO_BASE + DDB_PCI1_IO_SIZE - 1, - IORESOURCE_IO -}; - -static struct resource iopci_mem_resource = { - "ext pci memory space", - DDB_PCI1_MEM_BASE, - DDB_PCI1_MEM_BASE + DDB_PCI1_MEM_SIZE - 1, - IORESOURCE_MEM -}; - -extern struct pci_ops ddb5477_ext_pci_ops; -extern struct pci_ops ddb5477_io_pci_ops; - -struct pci_controller ddb5477_ext_controller = { - .pci_ops = &ddb5477_ext_pci_ops, - .io_resource = &extpci_io_resource, - .mem_resource = &extpci_mem_resource -}; - -struct pci_controller ddb5477_io_controller = { - .pci_ops = &ddb5477_io_pci_ops, - .io_resource = &iopci_io_resource, - .mem_resource = &iopci_mem_resource -}; - - - -/* - * we fix up irqs based on the slot number. - * The first entry is at AD:11. - * Fortunately this works because, although we have two pci buses, - * they all have different slot numbers (except for rockhopper slot 20 - * which is handled below). - * - */ - -/* - * irq mapping : device -> pci int # -> vrc4377 irq# , - * ddb5477 board manual page 4 and vrc5477 manual page 46 - */ - -/* - * based on ddb5477 manual page 11 - */ -#define MAX_SLOT_NUM 21 -static unsigned char irq_map[MAX_SLOT_NUM] = { - /* SLOT: 0, AD:11 */ 0xff, - /* SLOT: 1, AD:12 */ 0xff, - /* SLOT: 2, AD:13 */ 0xff, - /* SLOT: 3, AD:14 */ 0xff, - /* SLOT: 4, AD:15 */ VRC5477_IRQ_INTA, /* onboard tulip */ - /* SLOT: 5, AD:16 */ VRC5477_IRQ_INTB, /* slot 1 */ - /* SLOT: 6, AD:17 */ VRC5477_IRQ_INTC, /* slot 2 */ - /* SLOT: 7, AD:18 */ VRC5477_IRQ_INTD, /* slot 3 */ - /* SLOT: 8, AD:19 */ VRC5477_IRQ_INTE, /* slot 4 */ - /* SLOT: 9, AD:20 */ 0xff, - /* SLOT: 10, AD:21 */ 0xff, - /* SLOT: 11, AD:22 */ 0xff, - /* SLOT: 12, AD:23 */ 0xff, - /* SLOT: 13, AD:24 */ 0xff, - /* SLOT: 14, AD:25 */ 0xff, - /* SLOT: 15, AD:26 */ 0xff, - /* SLOT: 16, AD:27 */ 0xff, - /* SLOT: 17, AD:28 */ 0xff, - /* SLOT: 18, AD:29 */ VRC5477_IRQ_IOPCI_INTC, /* vrc5477 ac97 */ - /* SLOT: 19, AD:30 */ VRC5477_IRQ_IOPCI_INTB, /* vrc5477 usb peri */ - /* SLOT: 20, AD:31 */ VRC5477_IRQ_IOPCI_INTA, /* vrc5477 usb host */ -}; -static unsigned char rockhopperII_irq_map[MAX_SLOT_NUM] = { - /* SLOT: 0, AD:11 */ 0xff, - /* SLOT: 1, AD:12 */ VRC5477_IRQ_INTB, /* onboard AMD PCNET */ - /* SLOT: 2, AD:13 */ 0xff, - /* SLOT: 3, AD:14 */ 0xff, - /* SLOT: 4, AD:15 */ 14, /* M5229 ide ISA irq */ - /* SLOT: 5, AD:16 */ VRC5477_IRQ_INTD, /* slot 3 */ - /* SLOT: 6, AD:17 */ VRC5477_IRQ_INTA, /* slot 4 */ - /* SLOT: 7, AD:18 */ VRC5477_IRQ_INTD, /* slot 5 */ - /* SLOT: 8, AD:19 */ 0, /* M5457 modem nop */ - /* SLOT: 9, AD:20 */ VRC5477_IRQ_INTA, /* slot 2 */ - /* SLOT: 10, AD:21 */ 0xff, - /* SLOT: 11, AD:22 */ 0xff, - /* SLOT: 12, AD:23 */ 0xff, - /* SLOT: 13, AD:24 */ 0xff, - /* SLOT: 14, AD:25 */ 0xff, - /* SLOT: 15, AD:26 */ 0xff, - /* SLOT: 16, AD:27 */ 0xff, - /* SLOT: 17, AD:28 */ 0, /* M7101 PMU nop */ - /* SLOT: 18, AD:29 */ VRC5477_IRQ_IOPCI_INTC, /* vrc5477 ac97 */ - /* SLOT: 19, AD:30 */ VRC5477_IRQ_IOPCI_INTB, /* vrc5477 usb peri */ - /* SLOT: 20, AD:31 */ VRC5477_IRQ_IOPCI_INTA, /* vrc5477 usb host */ -}; - -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) -{ - int slot_num; - unsigned char *slot_irq_map; - unsigned char irq; - - /* - * We ignore the swizzled slot and pin values. The original - * pci_fixup_irq() codes largely base irq number on the dev slot - * numbers because except for one case they are unique even - * though there are multiple pci buses. - */ - - if (mips_machtype == MACH_NEC_ROCKHOPPERII) - slot_irq_map = rockhopperII_irq_map; - else - slot_irq_map = irq_map; - - slot_num = PCI_SLOT(dev->devfn); - irq = slot_irq_map[slot_num]; - - db_assert(slot_num < MAX_SLOT_NUM); - - db_assert(irq != 0xff); - - pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq); - - if (mips_machtype == MACH_NEC_ROCKHOPPERII) { - /* hack to distinquish overlapping slot 20s, one - * on bus 0 (ALI USB on the M1535 on the backplane), - * and one on bus 2 (NEC USB controller on the CPU board) - * Make the M1535 USB - ISA IRQ number 9. - */ - if (slot_num == 20 && dev->bus->number == 0) { - pci_write_config_byte(dev, - PCI_INTERRUPT_LINE, - 9); - irq = 9; - } - - } - - return irq; -} - -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} - -void ddb_pci_reset_bus(void) -{ - u32 temp; - - /* - * I am not sure about the "official" procedure, the following - * steps work as far as I know: - * We first set PCI cold reset bit (bit 31) in PCICTRL-H. - * Then we clear the PCI warm reset bit (bit 30) to 0 in PCICTRL-H. - * The same is true for both PCI channels. - */ - temp = ddb_in32(DDB_PCICTL0_H); - temp |= 0x80000000; - ddb_out32(DDB_PCICTL0_H, temp); - temp &= ~0xc0000000; - ddb_out32(DDB_PCICTL0_H, temp); - - temp = ddb_in32(DDB_PCICTL1_H); - temp |= 0x80000000; - ddb_out32(DDB_PCICTL1_H, temp); - temp &= ~0xc0000000; - ddb_out32(DDB_PCICTL1_H, temp); -} diff --git a/arch/mips/pci/pci-emma2rh.c b/arch/mips/pci/pci-emma2rh.c new file mode 100644 index 00000000000..773e34ff4d1 --- /dev/null +++ b/arch/mips/pci/pci-emma2rh.c @@ -0,0 +1,85 @@ +/* + * Copyright (C) NEC Electronics Corporation 2004-2006 + * + * This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c + * + * Copyright 2001 MontaVista Software Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/pci.h> + +#include <asm/bootinfo.h> + +#include <asm/emma/emma2rh.h> + +static struct resource pci_io_resource = { + .name = "pci IO space", + .start = EMMA2RH_PCI_IO_BASE, + .end = EMMA2RH_PCI_IO_BASE + EMMA2RH_PCI_IO_SIZE - 1, + .flags = IORESOURCE_IO, +}; + +static struct resource pci_mem_resource = { + .name = "pci memory space", + .start = EMMA2RH_PCI_MEM_BASE, + .end = EMMA2RH_PCI_MEM_BASE + EMMA2RH_PCI_MEM_SIZE - 1, + .flags = IORESOURCE_MEM, +}; + +extern struct pci_ops emma2rh_pci_ops; + +static struct pci_controller emma2rh_pci_controller = { + .pci_ops = &emma2rh_pci_ops, + .mem_resource = &pci_mem_resource, + .io_resource = &pci_io_resource, + .mem_offset = -0x04000000, + .io_offset = 0, +}; + +static void __init emma2rh_pci_init(void) +{ + /* setup PCI interface */ + emma2rh_out32(EMMA2RH_PCI_ARBIT_CTR, 0x70f); + + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, 0x80000a18); + emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_COMMAND, + PCI_STATUS_DEVSEL_MEDIUM | PCI_STATUS_CAP_LIST | + PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY); + emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_BASE_ADDRESS_0, 0x10000000); + emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_BASE_ADDRESS_1, 0x00000000); + + emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, 0x12000000 | 0x218); + emma2rh_out32(EMMA2RH_PCI_IWIN1_CTR, 0x18000000 | 0x600); + emma2rh_out32(EMMA2RH_PCI_INIT_ESWP, 0x00000200); + + emma2rh_out32(EMMA2RH_PCI_TWIN_CTR, 0x00009200); + emma2rh_out32(EMMA2RH_PCI_TWIN_BADR, 0x00000000); + emma2rh_out32(EMMA2RH_PCI_TWIN0_DADR, 0x00000000); + emma2rh_out32(EMMA2RH_PCI_TWIN1_DADR, 0x00000000); +} + +static int __init emma2rh_pci_setup(void) +{ + emma2rh_pci_init(); + register_pci_controller(&emma2rh_pci_controller); + return 0; +} + +arch_initcall(emma2rh_pci_setup); diff --git a/arch/mips/pci/pci-ev96100.c b/arch/mips/pci/pci-ev96100.c deleted file mode 100644 index f9457ea00de..00000000000 --- a/arch/mips/pci/pci-ev96100.c +++ /dev/null @@ -1,63 +0,0 @@ -/* - * Copyright 2000 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ppopov@mvista.com or source@mvista.com - * - * Carsten Langgaard, carstenl@mips.com - * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. - * - * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -static struct resource pci_io_resource = { - .name = "io pci IO space", - .start = 0x10000000, - .end = 0x11ffffff, - .flags = IORESOURCE_IO -}; - -static struct resource pci_mem_resource = { - .name = "ext pci memory space", - .start = 0x12000000, - .end = 0x13ffffff, - .flags = IORESOURCE_MEM -}; - -extern struct pci_ops gt96100_pci_ops; - -struct pci_controller ev96100_controller = { - .pci_ops = >96100_pci_ops, - .io_resource = &pci_io_resource, - .mem_resource = &pci_mem_resource, -}; - -static void ev96100_pci_init(void) -{ - register_pci_controller(&ev96100_controller); -} - -arch_initcall(ev96100_pci_init); diff --git a/arch/mips/pci/pci-ip27.c b/arch/mips/pci/pci-ip27.c index 6002d2a6a26..0f09eafa5e3 100644 --- a/arch/mips/pci/pci-ip27.c +++ b/arch/mips/pci/pci-ip27.c @@ -7,17 +7,16 @@ * Copyright (C) 1999, 2000, 04 Ralf Baechle (ralf@linux-mips.org) * Copyright (C) 1999, 2000 Silicon Graphics, Inc. */ -#include <linux/init.h> #include <linux/kernel.h> +#include <linux/export.h> #include <linux/pci.h> +#include <linux/smp.h> #include <asm/sn/arch.h> #include <asm/pci/bridge.h> #include <asm/paccess.h> #include <asm/sn/intr.h> #include <asm/sn/sn0/hub.h> -extern unsigned int allocate_irqno(void); - /* * Max #PCI busses we can handle; ie, max #PCI bridges. */ @@ -30,7 +29,7 @@ extern unsigned int allocate_irqno(void); /* * XXX: No kmalloc available when we do our crosstalk scan, - * we should try to move it later in the boot process. + * we should try to move it later in the boot process. */ static struct bridge_controller bridges[MAX_PCI_BUSSES]; @@ -40,299 +39,9 @@ static struct bridge_controller bridges[MAX_PCI_BUSSES]; struct bridge_controller *irq_to_bridge[MAX_PCI_BUSSES * MAX_DEVICES_PER_PCIBUS]; int irq_to_slot[MAX_PCI_BUSSES * MAX_DEVICES_PER_PCIBUS]; -/* - * The Bridge ASIC supports both type 0 and type 1 access. Type 1 is - * not really documented, so right now I can't write code which uses it. - * Therefore we use type 0 accesses for now even though they won't work - * correcly for PCI-to-PCI bridges. - * - * The function is complicated by the ultimate brokeness of the IOC3 chip - * which is used in SGI systems. The IOC3 can only handle 32-bit PCI - * accesses and does only decode parts of it's address space. - */ - -static int pci_conf0_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * value) -{ - struct bridge_controller *bc = BRIDGE_CONTROLLER(bus); - bridge_t *bridge = bc->base; - int slot = PCI_SLOT(devfn); - int fn = PCI_FUNC(devfn); - volatile void *addr; - u32 cf, shift, mask; - int res; - - addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[PCI_VENDOR_ID]; - if (get_dbe(cf, (u32 *) addr)) - return PCIBIOS_DEVICE_NOT_FOUND; - - /* - * IOC3 is fucked fucked beyond believe ... Don't even give the - * generic PCI code a chance to look at it for real ... - */ - if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16))) - goto oh_my_gawd; - - addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[where ^ (4 - size)]; - - if (size == 1) - res = get_dbe(*value, (u8 *) addr); - else if (size == 2) - res = get_dbe(*value, (u16 *) addr); - else - res = get_dbe(*value, (u32 *) addr); - - return res ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; - -oh_my_gawd: - - /* - * IOC3 is fucked fucked beyond believe ... Don't even give the - * generic PCI code a chance to look at the wrong register. - */ - if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) { - *value = 0; - return PCIBIOS_SUCCESSFUL; - } - - /* - * IOC3 is fucked fucked beyond believe ... Don't try to access - * anything but 32-bit words ... - */ - addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2]; - - if (get_dbe(cf, (u32 *) addr)) - return PCIBIOS_DEVICE_NOT_FOUND; - - shift = ((where & 3) << 3); - mask = (0xffffffffU >> ((4 - size) << 3)); - *value = (cf >> shift) & mask; - - return PCIBIOS_SUCCESSFUL; -} - -static int pci_conf1_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * value) -{ - struct bridge_controller *bc = BRIDGE_CONTROLLER(bus); - bridge_t *bridge = bc->base; - int busno = bus->number; - int slot = PCI_SLOT(devfn); - int fn = PCI_FUNC(devfn); - volatile void *addr; - u32 cf, shift, mask; - int res; - - bridge->b_pci_cfg = (busno << 16) | (slot << 11); - addr = &bridge->b_type1_cfg.c[(fn << 8) | PCI_VENDOR_ID]; - if (get_dbe(cf, (u32 *) addr)) - return PCIBIOS_DEVICE_NOT_FOUND; - - /* - * IOC3 is fucked fucked beyond believe ... Don't even give the - * generic PCI code a chance to look at it for real ... - */ - if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16))) - goto oh_my_gawd; - - bridge->b_pci_cfg = (busno << 16) | (slot << 11); - addr = &bridge->b_type1_cfg.c[(fn << 8) | (where ^ (4 - size))]; - - if (size == 1) - res = get_dbe(*value, (u8 *) addr); - else if (size == 2) - res = get_dbe(*value, (u16 *) addr); - else - res = get_dbe(*value, (u32 *) addr); - - return res ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL; - -oh_my_gawd: - - /* - * IOC3 is fucked fucked beyond believe ... Don't even give the - * generic PCI code a chance to look at the wrong register. - */ - if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) { - *value = 0; - return PCIBIOS_SUCCESSFUL; - } - - /* - * IOC3 is fucked fucked beyond believe ... Don't try to access - * anything but 32-bit words ... - */ - bridge->b_pci_cfg = (busno << 16) | (slot << 11); - addr = &bridge->b_type1_cfg.c[(fn << 8) | where]; - - if (get_dbe(cf, (u32 *) addr)) - return PCIBIOS_DEVICE_NOT_FOUND; - - shift = ((where & 3) << 3); - mask = (0xffffffffU >> ((4 - size) << 3)); - *value = (cf >> shift) & mask; - - return PCIBIOS_SUCCESSFUL; -} - -static int pci_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * value) -{ - if (bus->number > 0) - return pci_conf1_read_config(bus, devfn, where, size, value); - - return pci_conf0_read_config(bus, devfn, where, size, value); -} - -static int pci_conf0_write_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 value) -{ - struct bridge_controller *bc = BRIDGE_CONTROLLER(bus); - bridge_t *bridge = bc->base; - int slot = PCI_SLOT(devfn); - int fn = PCI_FUNC(devfn); - volatile void *addr; - u32 cf, shift, mask, smask; - int res; - - addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[PCI_VENDOR_ID]; - if (get_dbe(cf, (u32 *) addr)) - return PCIBIOS_DEVICE_NOT_FOUND; - - /* - * IOC3 is fucked fucked beyond believe ... Don't even give the - * generic PCI code a chance to look at it for real ... - */ - if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16))) - goto oh_my_gawd; - - addr = &bridge->b_type0_cfg_dev[slot].f[fn].c[where ^ (4 - size)]; +extern struct pci_ops bridge_pci_ops; - if (size == 1) { - res = put_dbe(value, (u8 *) addr); - } else if (size == 2) { - res = put_dbe(value, (u16 *) addr); - } else { - res = put_dbe(value, (u32 *) addr); - } - - if (res) - return PCIBIOS_DEVICE_NOT_FOUND; - - return PCIBIOS_SUCCESSFUL; - -oh_my_gawd: - - /* - * IOC3 is fucked fucked beyond believe ... Don't even give the - * generic PCI code a chance to touch the wrong register. - */ - if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) - return PCIBIOS_SUCCESSFUL; - - /* - * IOC3 is fucked fucked beyond believe ... Don't try to access - * anything but 32-bit words ... - */ - addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2]; - - if (get_dbe(cf, (u32 *) addr)) - return PCIBIOS_DEVICE_NOT_FOUND; - - shift = ((where & 3) << 3); - mask = (0xffffffffU >> ((4 - size) << 3)); - smask = mask << shift; - - cf = (cf & ~smask) | ((value & mask) << shift); - if (put_dbe(cf, (u32 *) addr)) - return PCIBIOS_DEVICE_NOT_FOUND; - - return PCIBIOS_SUCCESSFUL; -} - -static int pci_conf1_write_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 value) -{ - struct bridge_controller *bc = BRIDGE_CONTROLLER(bus); - bridge_t *bridge = bc->base; - int slot = PCI_SLOT(devfn); - int fn = PCI_FUNC(devfn); - int busno = bus->number; - volatile void *addr; - u32 cf, shift, mask, smask; - int res; - - bridge->b_pci_cfg = (busno << 16) | (slot << 11); - addr = &bridge->b_type1_cfg.c[(fn << 8) | PCI_VENDOR_ID]; - if (get_dbe(cf, (u32 *) addr)) - return PCIBIOS_DEVICE_NOT_FOUND; - - /* - * IOC3 is fucked fucked beyond believe ... Don't even give the - * generic PCI code a chance to look at it for real ... - */ - if (cf == (PCI_VENDOR_ID_SGI | (PCI_DEVICE_ID_SGI_IOC3 << 16))) - goto oh_my_gawd; - - addr = &bridge->b_type1_cfg.c[(fn << 8) | (where ^ (4 - size))]; - - if (size == 1) { - res = put_dbe(value, (u8 *) addr); - } else if (size == 2) { - res = put_dbe(value, (u16 *) addr); - } else { - res = put_dbe(value, (u32 *) addr); - } - - if (res) - return PCIBIOS_DEVICE_NOT_FOUND; - - return PCIBIOS_SUCCESSFUL; - -oh_my_gawd: - - /* - * IOC3 is fucked fucked beyond believe ... Don't even give the - * generic PCI code a chance to touch the wrong register. - */ - if ((where >= 0x14 && where < 0x40) || (where >= 0x48)) - return PCIBIOS_SUCCESSFUL; - - /* - * IOC3 is fucked fucked beyond believe ... Don't try to access - * anything but 32-bit words ... - */ - addr = &bridge->b_type0_cfg_dev[slot].f[fn].l[where >> 2]; - - if (get_dbe(cf, (u32 *) addr)) - return PCIBIOS_DEVICE_NOT_FOUND; - - shift = ((where & 3) << 3); - mask = (0xffffffffU >> ((4 - size) << 3)); - smask = mask << shift; - - cf = (cf & ~smask) | ((value & mask) << shift); - if (put_dbe(cf, (u32 *) addr)) - return PCIBIOS_DEVICE_NOT_FOUND; - - return PCIBIOS_SUCCESSFUL; -} - -static int pci_write_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 value) -{ - if (bus->number > 0) - return pci_conf1_write_config(bus, devfn, where, size, value); - - return pci_conf0_write_config(bus, devfn, where, size, value); -} - -static struct pci_ops bridge_pci_ops = { - .read = pci_read_config, - .write = pci_write_config, -}; - -int __init bridge_probe(nasid_t nasid, int widget_id, int masterwid) +int bridge_probe(nasid_t nasid, int widget_id, int masterwid) { unsigned long offset = NODE_OFFSET(nasid); struct bridge_controller *bc; @@ -340,6 +49,8 @@ int __init bridge_probe(nasid_t nasid, int widget_id, int masterwid) bridge_t *bridge; int slot; + pci_set_flags(PCI_PROBE_ONLY); + printk("a bridge\n"); /* XXX: kludge alert.. */ @@ -370,8 +81,7 @@ int __init bridge_probe(nasid_t nasid, int widget_id, int masterwid) bc->widget_id = widget_id; bc->nasid = nasid; - bc->baddr = (u64)masterwid << 60; - bc->baddr |= (1UL << 56); /* Barrier set */ + bc->baddr = (u64)masterwid << 60 | PCI64_ATTR_BAR; /* * point to this bridge @@ -392,7 +102,12 @@ int __init bridge_probe(nasid_t nasid, int widget_id, int masterwid) * swap pio's to pci mem and io space (big windows) */ bridge->b_wid_control |= BRIDGE_CTRL_IO_SWAP | - BRIDGE_CTRL_MEM_SWAP; + BRIDGE_CTRL_MEM_SWAP; +#ifdef CONFIG_PAGE_SIZE_4KB + bridge->b_wid_control &= ~BRIDGE_CTRL_PAGE_SIZE; +#else /* 16kB or larger */ + bridge->b_wid_control |= BRIDGE_CTRL_PAGE_SIZE; +#endif /* * Hmm... IRIX sets additional bits in the address which @@ -407,7 +122,7 @@ int __init bridge_probe(nasid_t nasid, int widget_id, int masterwid) bridge->b_device[slot].reg |= BRIDGE_DEV_SWAP_DIR; bc->pci_int[slot] = -1; } - bridge->b_wid_tflush; /* wait until Bridge PIO complete */ + bridge->b_wid_tflush; /* wait until Bridge PIO complete */ bc->base = bridge; @@ -427,32 +142,48 @@ int __init bridge_probe(nasid_t nasid, int widget_id, int masterwid) * A given PCI device, in general, should be able to intr any of the cpus * on any one of the hubs connected to its xbow. */ -int __devinit pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + return 0; +} + +static inline struct pci_dev *bridge_root_dev(struct pci_dev *dev) +{ + while (dev->bus->parent) { + /* Move up the chain of bridges. */ + dev = dev->bus->self; + } + + return dev; +} + +/* Do platform specific device initialization at pci_enable_device() time */ +int pcibios_plat_dev_init(struct pci_dev *dev) { struct bridge_controller *bc = BRIDGE_CONTROLLER(dev->bus); - int irq = bc->pci_int[slot]; + struct pci_dev *rdev = bridge_root_dev(dev); + int slot = PCI_SLOT(rdev->devfn); + int irq; + irq = bc->pci_int[slot]; if (irq == -1) { - irq = bc->pci_int[slot] = request_bridge_irq(bc); + irq = request_bridge_irq(bc); if (irq < 0) - panic("Can't allocate interrupt for PCI device %s\n", - pci_name(dev)); + return irq; + + bc->pci_int[slot] = irq; } irq_to_bridge[irq] = bc; irq_to_slot[irq] = slot; - return irq; -} + dev->irq = irq; -/* Do platform specific device initialization at pci_enable_device() time */ -int pcibios_plat_dev_init(struct pci_dev *dev) -{ return 0; } /* - * Device might live on a subordinate PCI bus. XXX Walk up the chain of buses + * Device might live on a subordinate PCI bus. XXX Walk up the chain of buses * to find the slot number in sense of the bridge device register. * XXX This also means multiple devices might rely on conflicting bridge * settings. @@ -480,17 +211,20 @@ static inline void pci_enable_swapping(struct pci_dev *dev) bridge->b_widget.w_tflush; /* Flush */ } -static void __init pci_fixup_ioc3(struct pci_dev *d) +static void pci_fixup_ioc3(struct pci_dev *d) { pci_disable_swapping(d); } +#ifdef CONFIG_NUMA int pcibus_to_node(struct pci_bus *bus) { struct bridge_controller *bc = BRIDGE_CONTROLLER(bus); return bc->nasid; } +EXPORT_SYMBOL(pcibus_to_node); +#endif /* CONFIG_NUMA */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_IOC3, pci_fixup_ioc3); diff --git a/arch/mips/pci/pci-ip32.c b/arch/mips/pci/pci-ip32.c index 180af89bcb1..b1e061f7fdc 100644 --- a/arch/mips/pci/pci-ip32.c +++ b/arch/mips/pci/pci-ip32.c @@ -6,7 +6,6 @@ * Copyright (C) 2000, 2001 Keith M Wesolowski * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/interrupt.h> @@ -19,11 +18,11 @@ /* * Handle errors from the bridge. This includes master and target aborts, - * various command and address errors, and the interrupt test. This gets - * registered on the bridge error irq. It's conceivable that some of these - * conditions warrant a panic. Anybody care to say which ones? + * various command and address errors, and the interrupt test. This gets + * registered on the bridge error irq. It's conceivable that some of these + * conditions warrant a panic. Anybody care to say which ones? */ -static irqreturn_t macepci_error(int irq, void *dev, struct pt_regs *regs) +static irqreturn_t macepci_error(int irq, void *dev) { char s; unsigned int flags = mace->pci.error; @@ -120,6 +119,7 @@ static struct pci_controller mace_pci_controller = { .iommu = 0, .mem_offset = MACE_PCI_MEM_OFFSET, .io_offset = 0, + .io_map_base = CKSEG1ADDR(MACEPCI_LOW_IO), }; static int __init mace_init(void) @@ -136,7 +136,8 @@ static int __init mace_init(void) BUG_ON(request_irq(MACE_PCI_BRIDGE_IRQ, macepci_error, 0, "MACE PCI error", NULL)); - iomem_resource = mace_pci_mem_resource; + /* extend memory resources */ + iomem_resource.end = mace_pci_mem_resource.end; ioport_resource = mace_pci_io_resource; register_pci_controller(&mace_pci_controller); diff --git a/arch/mips/pci/pci-jmr3927.c b/arch/mips/pci/pci-jmr3927.c deleted file mode 100644 index f02ef6e36b0..00000000000 --- a/arch/mips/pci/pci-jmr3927.c +++ /dev/null @@ -1,58 +0,0 @@ -/* - * Copyright 2001 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * ahennessy@mvista.com - * - * Copyright (C) 2000-2001 Toshiba Corporation - * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <asm/jmr3927/jmr3927.h> -#include <asm/debug.h> - -struct resource pci_io_resource = { - "IO MEM", - 0x1000, /* reserve regacy I/O space */ - 0x1000 + JMR3927_PCIIO_SIZE - 1, - IORESOURCE_IO -}; - -struct resource pci_mem_resource = { - "PCI MEM", - JMR3927_PCIMEM, - JMR3927_PCIMEM + JMR3927_PCIMEM_SIZE - 1, - IORESOURCE_MEM -}; - -extern struct pci_ops jmr3927_pci_ops; - -struct pci_controller jmr3927_controller = { - .pci_ops = &jmr3927_pci_ops, - .io_resource = &pci_io_resource, - .mem_resource = &pci_mem_resource, - .mem_offset = JMR3927_PCIMEM -}; diff --git a/arch/mips/pci/pci-lantiq.c b/arch/mips/pci/pci-lantiq.c new file mode 100644 index 00000000000..cb1ef998406 --- /dev/null +++ b/arch/mips/pci/pci-lantiq.c @@ -0,0 +1,263 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * Copyright (C) 2010 John Crispin <blogic@openwrt.org> + */ + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/mm.h> +#include <linux/vmalloc.h> +#include <linux/module.h> +#include <linux/clk.h> +#include <linux/of_platform.h> +#include <linux/of_gpio.h> +#include <linux/of_irq.h> +#include <linux/of_pci.h> + +#include <asm/pci.h> +#include <asm/gpio.h> +#include <asm/addrspace.h> + +#include <lantiq_soc.h> +#include <lantiq_irq.h> + +#include "pci-lantiq.h" + +#define PCI_CR_FCI_ADDR_MAP0 0x00C0 +#define PCI_CR_FCI_ADDR_MAP1 0x00C4 +#define PCI_CR_FCI_ADDR_MAP2 0x00C8 +#define PCI_CR_FCI_ADDR_MAP3 0x00CC +#define PCI_CR_FCI_ADDR_MAP4 0x00D0 +#define PCI_CR_FCI_ADDR_MAP5 0x00D4 +#define PCI_CR_FCI_ADDR_MAP6 0x00D8 +#define PCI_CR_FCI_ADDR_MAP7 0x00DC +#define PCI_CR_CLK_CTRL 0x0000 +#define PCI_CR_PCI_MOD 0x0030 +#define PCI_CR_PC_ARB 0x0080 +#define PCI_CR_FCI_ADDR_MAP11hg 0x00E4 +#define PCI_CR_BAR11MASK 0x0044 +#define PCI_CR_BAR12MASK 0x0048 +#define PCI_CR_BAR13MASK 0x004C +#define PCI_CS_BASE_ADDR1 0x0010 +#define PCI_CR_PCI_ADDR_MAP11 0x0064 +#define PCI_CR_FCI_BURST_LENGTH 0x00E8 +#define PCI_CR_PCI_EOI 0x002C +#define PCI_CS_STS_CMD 0x0004 + +#define PCI_MASTER0_REQ_MASK_2BITS 8 +#define PCI_MASTER1_REQ_MASK_2BITS 10 +#define PCI_MASTER2_REQ_MASK_2BITS 12 +#define INTERNAL_ARB_ENABLE_BIT 0 + +#define LTQ_CGU_IFCCR 0x0018 +#define LTQ_CGU_PCICR 0x0034 + +#define ltq_pci_w32(x, y) ltq_w32((x), ltq_pci_membase + (y)) +#define ltq_pci_r32(x) ltq_r32(ltq_pci_membase + (x)) + +#define ltq_pci_cfg_w32(x, y) ltq_w32((x), ltq_pci_mapped_cfg + (y)) +#define ltq_pci_cfg_r32(x) ltq_r32(ltq_pci_mapped_cfg + (x)) + +__iomem void *ltq_pci_mapped_cfg; +static __iomem void *ltq_pci_membase; + +static int reset_gpio; +static struct clk *clk_pci, *clk_external; +static struct resource pci_io_resource; +static struct resource pci_mem_resource; +static struct pci_ops pci_ops = { + .read = ltq_pci_read_config_dword, + .write = ltq_pci_write_config_dword +}; + +static struct pci_controller pci_controller = { + .pci_ops = &pci_ops, + .mem_resource = &pci_mem_resource, + .mem_offset = 0x00000000UL, + .io_resource = &pci_io_resource, + .io_offset = 0x00000000UL, +}; + +static inline u32 ltq_calc_bar11mask(void) +{ + u32 mem, bar11mask; + + /* BAR11MASK value depends on available memory on system. */ + mem = get_num_physpages() * PAGE_SIZE; + bar11mask = (0x0ffffff0 & ~((1 << (fls(mem) - 1)) - 1)) | 8; + + return bar11mask; +} + +static int ltq_pci_startup(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + const __be32 *req_mask, *bus_clk; + u32 temp_buffer; + + /* get our clocks */ + clk_pci = clk_get(&pdev->dev, NULL); + if (IS_ERR(clk_pci)) { + dev_err(&pdev->dev, "failed to get pci clock\n"); + return PTR_ERR(clk_pci); + } + + clk_external = clk_get(&pdev->dev, "external"); + if (IS_ERR(clk_external)) { + clk_put(clk_pci); + dev_err(&pdev->dev, "failed to get external pci clock\n"); + return PTR_ERR(clk_external); + } + + /* read the bus speed that we want */ + bus_clk = of_get_property(node, "lantiq,bus-clock", NULL); + if (bus_clk) + clk_set_rate(clk_pci, *bus_clk); + + /* and enable the clocks */ + clk_enable(clk_pci); + if (of_find_property(node, "lantiq,external-clock", NULL)) + clk_enable(clk_external); + else + clk_disable(clk_external); + + /* setup reset gpio used by pci */ + reset_gpio = of_get_named_gpio(node, "gpio-reset", 0); + if (gpio_is_valid(reset_gpio)) { + int ret = devm_gpio_request(&pdev->dev, + reset_gpio, "pci-reset"); + if (ret) { + dev_err(&pdev->dev, + "failed to request gpio %d\n", reset_gpio); + return ret; + } + gpio_direction_output(reset_gpio, 1); + } + + /* enable auto-switching between PCI and EBU */ + ltq_pci_w32(0xa, PCI_CR_CLK_CTRL); + + /* busy, i.e. configuration is not done, PCI access has to be retried */ + ltq_pci_w32(ltq_pci_r32(PCI_CR_PCI_MOD) & ~(1 << 24), PCI_CR_PCI_MOD); + wmb(); + /* BUS Master/IO/MEM access */ + ltq_pci_cfg_w32(ltq_pci_cfg_r32(PCI_CS_STS_CMD) | 7, PCI_CS_STS_CMD); + + /* enable external 2 PCI masters */ + temp_buffer = ltq_pci_r32(PCI_CR_PC_ARB); + /* setup the request mask */ + req_mask = of_get_property(node, "req-mask", NULL); + if (req_mask) + temp_buffer &= ~((*req_mask & 0xf) << 16); + else + temp_buffer &= ~0xf0000; + /* enable internal arbiter */ + temp_buffer |= (1 << INTERNAL_ARB_ENABLE_BIT); + /* enable internal PCI master reqest */ + temp_buffer &= (~(3 << PCI_MASTER0_REQ_MASK_2BITS)); + + /* enable EBU request */ + temp_buffer &= (~(3 << PCI_MASTER1_REQ_MASK_2BITS)); + + /* enable all external masters request */ + temp_buffer &= (~(3 << PCI_MASTER2_REQ_MASK_2BITS)); + ltq_pci_w32(temp_buffer, PCI_CR_PC_ARB); + wmb(); + + /* setup BAR memory regions */ + ltq_pci_w32(0x18000000, PCI_CR_FCI_ADDR_MAP0); + ltq_pci_w32(0x18400000, PCI_CR_FCI_ADDR_MAP1); + ltq_pci_w32(0x18800000, PCI_CR_FCI_ADDR_MAP2); + ltq_pci_w32(0x18c00000, PCI_CR_FCI_ADDR_MAP3); + ltq_pci_w32(0x19000000, PCI_CR_FCI_ADDR_MAP4); + ltq_pci_w32(0x19400000, PCI_CR_FCI_ADDR_MAP5); + ltq_pci_w32(0x19800000, PCI_CR_FCI_ADDR_MAP6); + ltq_pci_w32(0x19c00000, PCI_CR_FCI_ADDR_MAP7); + ltq_pci_w32(0x1ae00000, PCI_CR_FCI_ADDR_MAP11hg); + ltq_pci_w32(ltq_calc_bar11mask(), PCI_CR_BAR11MASK); + ltq_pci_w32(0, PCI_CR_PCI_ADDR_MAP11); + ltq_pci_w32(0, PCI_CS_BASE_ADDR1); + /* both TX and RX endian swap are enabled */ + ltq_pci_w32(ltq_pci_r32(PCI_CR_PCI_EOI) | 3, PCI_CR_PCI_EOI); + wmb(); + ltq_pci_w32(ltq_pci_r32(PCI_CR_BAR12MASK) | 0x80000000, + PCI_CR_BAR12MASK); + ltq_pci_w32(ltq_pci_r32(PCI_CR_BAR13MASK) | 0x80000000, + PCI_CR_BAR13MASK); + /*use 8 dw burst length */ + ltq_pci_w32(0x303, PCI_CR_FCI_BURST_LENGTH); + ltq_pci_w32(ltq_pci_r32(PCI_CR_PCI_MOD) | (1 << 24), PCI_CR_PCI_MOD); + wmb(); + + /* setup irq line */ + ltq_ebu_w32(ltq_ebu_r32(LTQ_EBU_PCC_CON) | 0xc, LTQ_EBU_PCC_CON); + ltq_ebu_w32(ltq_ebu_r32(LTQ_EBU_PCC_IEN) | 0x10, LTQ_EBU_PCC_IEN); + + /* toggle reset pin */ + if (gpio_is_valid(reset_gpio)) { + __gpio_set_value(reset_gpio, 0); + wmb(); + mdelay(1); + __gpio_set_value(reset_gpio, 1); + } + return 0; +} + +static int ltq_pci_probe(struct platform_device *pdev) +{ + struct resource *res_cfg, *res_bridge; + + pci_clear_flags(PCI_PROBE_ONLY); + + res_cfg = platform_get_resource(pdev, IORESOURCE_MEM, 0); + res_bridge = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!res_cfg || !res_bridge) { + dev_err(&pdev->dev, "missing memory reources\n"); + return -EINVAL; + } + + ltq_pci_membase = devm_ioremap_resource(&pdev->dev, res_bridge); + if (IS_ERR(ltq_pci_membase)) + return PTR_ERR(ltq_pci_membase); + + ltq_pci_mapped_cfg = devm_ioremap_resource(&pdev->dev, res_cfg); + if (IS_ERR(ltq_pci_mapped_cfg)) + return PTR_ERR(ltq_pci_mapped_cfg); + + ltq_pci_startup(pdev); + + pci_load_of_ranges(&pci_controller, pdev->dev.of_node); + register_pci_controller(&pci_controller); + return 0; +} + +static const struct of_device_id ltq_pci_match[] = { + { .compatible = "lantiq,pci-xway" }, + {}, +}; +MODULE_DEVICE_TABLE(of, ltq_pci_match); + +static struct platform_driver ltq_pci_driver = { + .probe = ltq_pci_probe, + .driver = { + .name = "pci-xway", + .owner = THIS_MODULE, + .of_match_table = ltq_pci_match, + }, +}; + +int __init pcibios_init(void) +{ + int ret = platform_driver_register(<q_pci_driver); + if (ret) + pr_info("pci-xway: Error registering platform driver!"); + return ret; +} + +arch_initcall(pcibios_init); diff --git a/arch/mips/pci/pci-lantiq.h b/arch/mips/pci/pci-lantiq.h new file mode 100644 index 00000000000..66bf6cd6be3 --- /dev/null +++ b/arch/mips/pci/pci-lantiq.h @@ -0,0 +1,18 @@ +/* + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + * Copyright (C) 2010 John Crispin <blogic@openwrt.org> + */ + +#ifndef _LTQ_PCI_H__ +#define _LTQ_PCI_H__ + +extern __iomem void *ltq_pci_mapped_cfg; +extern int ltq_pci_read_config_dword(struct pci_bus *bus, + unsigned int devfn, int where, int size, u32 *val); +extern int ltq_pci_write_config_dword(struct pci_bus *bus, + unsigned int devfn, int where, int size, u32 val); + +#endif diff --git a/arch/mips/pci/pci-lasat.c b/arch/mips/pci/pci-lasat.c index 88fb191ad2e..40d2797d2bc 100644 --- a/arch/mips/pci/pci-lasat.c +++ b/arch/mips/pci/pci-lasat.c @@ -5,14 +5,17 @@ * * Copyright (C) 2000, 2001, 04 Keith M Wesolowski */ -#include <linux/kernel.h> #include <linux/init.h> +#include <linux/kernel.h> #include <linux/pci.h> #include <linux/types.h> -#include <asm/bootinfo.h> + +#include <asm/lasat/lasat.h> + +#include <irq.h> extern struct pci_ops nile4_pci_ops; -extern struct pci_ops gt64120_pci_ops; +extern struct pci_ops gt64xxx_pci0_ops; static struct resource lasat_pci_mem_resource = { .name = "LASAT PCI MEM", .start = 0x18000000, @@ -34,18 +37,12 @@ static struct pci_controller lasat_pci_controller = { static int __init lasat_pci_setup(void) { - printk("PCI: starting\n"); + printk(KERN_DEBUG "PCI: starting\n"); - switch (mips_machtype) { - case MACH_LASAT_100: - lasat_pci_controller.pci_ops = >64120_pci_ops; - break; - case MACH_LASAT_200: - lasat_pci_controller.pci_ops = &nile4_pci_ops; - break; - default: - panic("pcibios_init: mips_machtype incorrect"); - } + if (IS_LASAT_200()) + lasat_pci_controller.pci_ops = &nile4_pci_ops; + else + lasat_pci_controller.pci_ops = >64xxx_pci0_ops; register_pci_controller(&lasat_pci_controller); @@ -54,31 +51,31 @@ static int __init lasat_pci_setup(void) arch_initcall(lasat_pci_setup); -#define LASATINT_ETH1 0 -#define LASATINT_ETH0 1 -#define LASATINT_HDC 2 -#define LASATINT_COMP 3 -#define LASATINT_HDLC 4 -#define LASATINT_PCIA 5 -#define LASATINT_PCIB 6 -#define LASATINT_PCIC 7 -#define LASATINT_PCID 8 +#define LASAT_IRQ_ETH1 (LASAT_IRQ_BASE + 0) +#define LASAT_IRQ_ETH0 (LASAT_IRQ_BASE + 1) +#define LASAT_IRQ_HDC (LASAT_IRQ_BASE + 2) +#define LASAT_IRQ_COMP (LASAT_IRQ_BASE + 3) +#define LASAT_IRQ_HDLC (LASAT_IRQ_BASE + 4) +#define LASAT_IRQ_PCIA (LASAT_IRQ_BASE + 5) +#define LASAT_IRQ_PCIB (LASAT_IRQ_BASE + 6) +#define LASAT_IRQ_PCIC (LASAT_IRQ_BASE + 7) +#define LASAT_IRQ_PCID (LASAT_IRQ_BASE + 8) -int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { switch (slot) { case 1: case 2: case 3: - return LASATINT_PCIA + (((slot-1) + (pin-1)) % 4); + return LASAT_IRQ_PCIA + (((slot-1) + (pin-1)) % 4); case 4: - return LASATINT_ETH1; /* Ethernet 1 (LAN 2) */ + return LASAT_IRQ_ETH1; /* Ethernet 1 (LAN 2) */ case 5: - return LASATINT_ETH0; /* Ethernet 0 (LAN 1) */ + return LASAT_IRQ_ETH0; /* Ethernet 0 (LAN 1) */ case 6: - return LASATINT_HDC; /* IDE controller */ + return LASAT_IRQ_HDC; /* IDE controller */ default: - return 0xff; /* Illegal */ + return 0xff; /* Illegal */ } return -1; diff --git a/arch/mips/pci/pci-malta.c b/arch/mips/pci/pci-malta.c new file mode 100644 index 00000000000..cfbbc3e3e91 --- /dev/null +++ b/arch/mips/pci/pci-malta.c @@ -0,0 +1,254 @@ +/* + * Copyright (C) 1999, 2000, 2004, 2005 MIPS Technologies, Inc. + * All rights reserved. + * Authors: Carsten Langgaard <carstenl@mips.com> + * Maciej W. Rozycki <macro@mips.com> + * + * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * MIPS boards specific PCI support. + */ +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/gt64120.h> +#include <asm/mips-cm.h> +#include <asm/mips-boards/generic.h> +#include <asm/mips-boards/bonito64.h> +#include <asm/mips-boards/msc01_pci.h> + +static struct resource bonito64_mem_resource = { + .name = "Bonito PCI MEM", + .flags = IORESOURCE_MEM, +}; + +static struct resource bonito64_io_resource = { + .name = "Bonito PCI I/O", + .start = 0x00000000UL, + .end = 0x000fffffUL, + .flags = IORESOURCE_IO, +}; + +static struct resource gt64120_mem_resource = { + .name = "GT-64120 PCI MEM", + .flags = IORESOURCE_MEM, +}; + +static struct resource gt64120_io_resource = { + .name = "GT-64120 PCI I/O", + .flags = IORESOURCE_IO, +}; + +static struct resource msc_mem_resource = { + .name = "MSC PCI MEM", + .flags = IORESOURCE_MEM, +}; + +static struct resource msc_io_resource = { + .name = "MSC PCI I/O", + .flags = IORESOURCE_IO, +}; + +extern struct pci_ops bonito64_pci_ops; +extern struct pci_ops gt64xxx_pci0_ops; +extern struct pci_ops msc_pci_ops; + +static struct pci_controller bonito64_controller = { + .pci_ops = &bonito64_pci_ops, + .io_resource = &bonito64_io_resource, + .mem_resource = &bonito64_mem_resource, + .io_offset = 0x00000000UL, +}; + +static struct pci_controller gt64120_controller = { + .pci_ops = >64xxx_pci0_ops, + .io_resource = >64120_io_resource, + .mem_resource = >64120_mem_resource, +}; + +static struct pci_controller msc_controller = { + .pci_ops = &msc_pci_ops, + .io_resource = &msc_io_resource, + .mem_resource = &msc_mem_resource, +}; + +void __init mips_pcibios_init(void) +{ + struct pci_controller *controller; + resource_size_t start, end, map, start1, end1, map1, map2, map3, mask; + + switch (mips_revision_sconid) { + case MIPS_REVISION_SCON_GT64120: + /* + * Due to a bug in the Galileo system controller, we need + * to setup the PCI BAR for the Galileo internal registers. + * This should be done in the bios/bootprom and will be + * fixed in a later revision of YAMON (the MIPS boards + * boot prom). + */ + GT_WRITE(GT_PCI0_CFGADDR_OFS, + (0 << GT_PCI0_CFGADDR_BUSNUM_SHF) | /* Local bus */ + (0 << GT_PCI0_CFGADDR_DEVNUM_SHF) | /* GT64120 dev */ + (0 << GT_PCI0_CFGADDR_FUNCTNUM_SHF) | /* Function 0*/ + ((0x20/4) << GT_PCI0_CFGADDR_REGNUM_SHF) | /* BAR 4*/ + GT_PCI0_CFGADDR_CONFIGEN_BIT); + + /* Perform the write */ + GT_WRITE(GT_PCI0_CFGDATA_OFS, CPHYSADDR(MIPS_GT_BASE)); + + /* Set up resource ranges from the controller's registers. */ + start = GT_READ(GT_PCI0M0LD_OFS); + end = GT_READ(GT_PCI0M0HD_OFS); + map = GT_READ(GT_PCI0M0REMAP_OFS); + end = (end & GT_PCI_HD_MSK) | (start & ~GT_PCI_HD_MSK); + start1 = GT_READ(GT_PCI0M1LD_OFS); + end1 = GT_READ(GT_PCI0M1HD_OFS); + map1 = GT_READ(GT_PCI0M1REMAP_OFS); + end1 = (end1 & GT_PCI_HD_MSK) | (start1 & ~GT_PCI_HD_MSK); + /* Cannot support multiple windows, use the wider. */ + if (end1 - start1 > end - start) { + start = start1; + end = end1; + map = map1; + } + mask = ~(start ^ end); + /* We don't support remapping with a discontiguous mask. */ + BUG_ON((start & GT_PCI_HD_MSK) != (map & GT_PCI_HD_MSK) && + mask != ~((mask & -mask) - 1)); + gt64120_mem_resource.start = start; + gt64120_mem_resource.end = end; + gt64120_controller.mem_offset = (start & mask) - (map & mask); + /* Addresses are 36-bit, so do shifts in the destinations. */ + gt64120_mem_resource.start <<= GT_PCI_DCRM_SHF; + gt64120_mem_resource.end <<= GT_PCI_DCRM_SHF; + gt64120_mem_resource.end |= (1 << GT_PCI_DCRM_SHF) - 1; + gt64120_controller.mem_offset <<= GT_PCI_DCRM_SHF; + + start = GT_READ(GT_PCI0IOLD_OFS); + end = GT_READ(GT_PCI0IOHD_OFS); + map = GT_READ(GT_PCI0IOREMAP_OFS); + end = (end & GT_PCI_HD_MSK) | (start & ~GT_PCI_HD_MSK); + mask = ~(start ^ end); + /* We don't support remapping with a discontiguous mask. */ + BUG_ON((start & GT_PCI_HD_MSK) != (map & GT_PCI_HD_MSK) && + mask != ~((mask & -mask) - 1)); + gt64120_io_resource.start = map & mask; + gt64120_io_resource.end = (map & mask) | ~mask; + gt64120_controller.io_offset = 0; + /* Addresses are 36-bit, so do shifts in the destinations. */ + gt64120_io_resource.start <<= GT_PCI_DCRM_SHF; + gt64120_io_resource.end <<= GT_PCI_DCRM_SHF; + gt64120_io_resource.end |= (1 << GT_PCI_DCRM_SHF) - 1; + + controller = >64120_controller; + break; + + case MIPS_REVISION_SCON_BONITO: + /* Set up resource ranges from the controller's registers. */ + map = BONITO_PCIMAP; + map1 = (BONITO_PCIMAP & BONITO_PCIMAP_PCIMAP_LO0) >> + BONITO_PCIMAP_PCIMAP_LO0_SHIFT; + map2 = (BONITO_PCIMAP & BONITO_PCIMAP_PCIMAP_LO1) >> + BONITO_PCIMAP_PCIMAP_LO1_SHIFT; + map3 = (BONITO_PCIMAP & BONITO_PCIMAP_PCIMAP_LO2) >> + BONITO_PCIMAP_PCIMAP_LO2_SHIFT; + /* Combine as many adjacent windows as possible. */ + map = map1; + start = BONITO_PCILO0_BASE; + end = 1; + if (map3 == map2 + 1) { + map = map2; + start = BONITO_PCILO1_BASE; + end++; + } + if (map2 == map1 + 1) { + map = map1; + start = BONITO_PCILO0_BASE; + end++; + } + bonito64_mem_resource.start = start; + bonito64_mem_resource.end = start + + BONITO_PCIMAP_WINBASE(end) - 1; + bonito64_controller.mem_offset = start - + BONITO_PCIMAP_WINBASE(map); + + controller = &bonito64_controller; + break; + + case MIPS_REVISION_SCON_SOCIT: + case MIPS_REVISION_SCON_ROCIT: + case MIPS_REVISION_SCON_SOCITSC: + case MIPS_REVISION_SCON_SOCITSCP: + /* Set up resource ranges from the controller's registers. */ + MSC_READ(MSC01_PCI_SC2PMBASL, start); + MSC_READ(MSC01_PCI_SC2PMMSKL, mask); + MSC_READ(MSC01_PCI_SC2PMMAPL, map); + msc_mem_resource.start = start & mask; + msc_mem_resource.end = (start & mask) | ~mask; + msc_controller.mem_offset = (start & mask) - (map & mask); + if (mips_cm_numiocu()) { + write_gcr_reg0_base(start); + write_gcr_reg0_mask(mask | + CM_GCR_REGn_MASK_CMTGT_IOCU0); + } + MSC_READ(MSC01_PCI_SC2PIOBASL, start); + MSC_READ(MSC01_PCI_SC2PIOMSKL, mask); + MSC_READ(MSC01_PCI_SC2PIOMAPL, map); + msc_io_resource.start = map & mask; + msc_io_resource.end = (map & mask) | ~mask; + msc_controller.io_offset = 0; + ioport_resource.end = ~mask; + if (mips_cm_numiocu()) { + write_gcr_reg1_base(start); + write_gcr_reg1_mask(mask | + CM_GCR_REGn_MASK_CMTGT_IOCU0); + } + /* If ranges overlap I/O takes precedence. */ + start = start & mask; + end = start | ~mask; + if ((start >= msc_mem_resource.start && + start <= msc_mem_resource.end) || + (end >= msc_mem_resource.start && + end <= msc_mem_resource.end)) { + /* Use the larger space. */ + start = max(start, msc_mem_resource.start); + end = min(end, msc_mem_resource.end); + if (start - msc_mem_resource.start >= + msc_mem_resource.end - end) + msc_mem_resource.end = start - 1; + else + msc_mem_resource.start = end + 1; + } + + controller = &msc_controller; + break; + default: + return; + } + + /* PIIX4 ACPI starts at 0x1000 */ + if (controller->io_resource->start < 0x00001000UL) + controller->io_resource->start = 0x00001000UL; + + iomem_resource.end &= 0xfffffffffULL; /* 64 GB */ + ioport_resource.end = controller->io_resource->end; + + controller->io_map_base = mips_io_port_base; + + register_pci_controller(controller); +} diff --git a/arch/mips/pci/pci-ocelot-c.c b/arch/mips/pci/pci-ocelot-c.c deleted file mode 100644 index 027759f7c90..00000000000 --- a/arch/mips/pci/pci-ocelot-c.c +++ /dev/null @@ -1,145 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2004, 06 by Ralf Baechle (ralf@linux-mips.org) - */ - -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/mv643xx.h> - -#include <linux/init.h> - -#include <asm/marvell.h> - -/* - * We assume the address ranges have already been setup appropriately by - * the firmware. PMON in case of the Ocelot C does that. - */ -static struct resource mv_pci_io_mem0_resource = { - .name = "MV64340 PCI0 IO MEM", - .flags = IORESOURCE_IO -}; - -static struct resource mv_pci_mem0_resource = { - .name = "MV64340 PCI0 MEM", - .flags = IORESOURCE_MEM -}; - -static struct mv_pci_controller mv_bus0_controller = { - .pcic = { - .pci_ops = &mv_pci_ops, - .mem_resource = &mv_pci_mem0_resource, - .io_resource = &mv_pci_io_mem0_resource, - }, - .config_addr = MV64340_PCI_0_CONFIG_ADDR, - .config_vreg = MV64340_PCI_0_CONFIG_DATA_VIRTUAL_REG, -}; - -static uint32_t mv_io_base, mv_io_size; - -static void mv64340_pci0_init(void) -{ - uint32_t mem0_base, mem0_size; - uint32_t io_base, io_size; - - io_base = MV_READ(MV64340_PCI_0_IO_BASE_ADDR) << 16; - io_size = (MV_READ(MV64340_PCI_0_IO_SIZE) + 1) << 16; - mem0_base = MV_READ(MV64340_PCI_0_MEMORY0_BASE_ADDR) << 16; - mem0_size = (MV_READ(MV64340_PCI_0_MEMORY0_SIZE) + 1) << 16; - - mv_pci_io_mem0_resource.start = 0; - mv_pci_io_mem0_resource.end = io_size - 1; - mv_pci_mem0_resource.start = mem0_base; - mv_pci_mem0_resource.end = mem0_base + mem0_size - 1; - mv_bus0_controller.pcic.mem_offset = mem0_base; - mv_bus0_controller.pcic.io_offset = 0; - - ioport_resource.end = io_size - 1; - - register_pci_controller(&mv_bus0_controller.pcic); - - mv_io_base = io_base; - mv_io_size = io_size; -} - -static struct resource mv_pci_io_mem1_resource = { - .name = "MV64340 PCI1 IO MEM", - .flags = IORESOURCE_IO -}; - -static struct resource mv_pci_mem1_resource = { - .name = "MV64340 PCI1 MEM", - .flags = IORESOURCE_MEM -}; - -static struct mv_pci_controller mv_bus1_controller = { - .pcic = { - .pci_ops = &mv_pci_ops, - .mem_resource = &mv_pci_mem1_resource, - .io_resource = &mv_pci_io_mem1_resource, - }, - .config_addr = MV64340_PCI_1_CONFIG_ADDR, - .config_vreg = MV64340_PCI_1_CONFIG_DATA_VIRTUAL_REG, -}; - -static __init void mv64340_pci1_init(void) -{ - uint32_t mem0_base, mem0_size; - uint32_t io_base, io_size; - - io_base = MV_READ(MV64340_PCI_1_IO_BASE_ADDR) << 16; - io_size = (MV_READ(MV64340_PCI_1_IO_SIZE) + 1) << 16; - mem0_base = MV_READ(MV64340_PCI_1_MEMORY0_BASE_ADDR) << 16; - mem0_size = (MV_READ(MV64340_PCI_1_MEMORY0_SIZE) + 1) << 16; - - /* - * Here we assume the I/O window of second bus to be contiguous with - * the first. A gap is no problem but would waste address space for - * remapping the port space. - */ - mv_pci_io_mem1_resource.start = mv_io_size; - mv_pci_io_mem1_resource.end = mv_io_size + io_size - 1; - mv_pci_mem1_resource.start = mem0_base; - mv_pci_mem1_resource.end = mem0_base + mem0_size - 1; - mv_bus1_controller.pcic.mem_offset = mem0_base; - mv_bus1_controller.pcic.io_offset = 0; - - ioport_resource.end = io_base + io_size -mv_io_base - 1; - - register_pci_controller(&mv_bus1_controller.pcic); - - mv_io_size = io_base + io_size - mv_io_base; -} - -static __init int __init ocelot_c_pci_init(void) -{ - unsigned long io_v_base; - uint32_t enable; - - enable = ~MV_READ(MV64340_BASE_ADDR_ENABLE); - - /* - * We require at least one enabled I/O or PCI memory window or we - * will ignore this PCI bus. We ignore PCI windows 1, 2 and 3. - */ - if (enable & (0x01 << 9) || enable & (0x01 << 10)) - mv64340_pci0_init(); - - if (enable & (0x01 << 14) || enable & (0x01 << 15)) - mv64340_pci1_init(); - - if (mv_io_size) { - io_v_base = (unsigned long) ioremap(mv_io_base, mv_io_size); - if (!io_v_base) - panic("Could not ioremap I/O port range"); - - set_io_port_base(io_v_base); - } - - return 0; -} - -arch_initcall(ocelot_c_pci_init); diff --git a/arch/mips/pci/pci-ocelot-g.c b/arch/mips/pci/pci-ocelot-g.c deleted file mode 100644 index 1e3430154fa..00000000000 --- a/arch/mips/pci/pci-ocelot-g.c +++ /dev/null @@ -1,97 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) - * - * This doesn't really fly - but I don't have a GT64240 system for testing. - */ -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/pci.h> -#include <asm/gt64240.h> - -/* - * We assume these address ranges have been programmed into the GT-64240 by - * the firmware. PMON in case of the Ocelot G does that. Note the size of - * the I/O range is completly stupid; I/O mappings are limited to at most - * 256 bytes by the PCI spec and deprecated; and just to make things worse - * apparently many devices don't decode more than 64k of I/O space. - */ - -#define gt_io_size 0x20000000UL -#define gt_io_base 0xe0000000UL - -static struct resource gt_pci_mem0_resource = { - .name = "MV64240 PCI0 MEM", - .start = 0xc0000000UL, - .end = 0xcfffffffUL, - .flags = IORESOURCE_MEM -}; - -static struct resource gt_pci_io_mem0_resource = { - .name = "MV64240 PCI0 IO MEM", - .start = 0xe0000000UL, - .end = 0xefffffffUL, - .flags = IORESOURCE_IO -}; - -static struct mv_pci_controller gt_bus0_controller = { - .pcic = { - .pci_ops = &mv_pci_ops, - .mem_resource = >_pci_mem0_resource, - .mem_offset = 0xc0000000UL, - .io_resource = >_pci_io_mem0_resource, - .io_offset = 0x00000000UL - }, - .config_addr = PCI_0CONFIGURATION_ADDRESS, - .config_vreg = PCI_0CONFIGURATION_DATA_VIRTUAL_REGISTER, -}; - -static struct resource gt_pci_mem1_resource = { - .name = "MV64240 PCI1 MEM", - .start = 0xd0000000UL, - .end = 0xdfffffffUL, - .flags = IORESOURCE_MEM -}; - -static struct resource gt_pci_io_mem1_resource = { - .name = "MV64240 PCI1 IO MEM", - .start = 0xf0000000UL, - .end = 0xffffffffUL, - .flags = IORESOURCE_IO -}; - -static struct mv_pci_controller gt_bus1_controller = { - .pcic = { - .pci_ops = &mv_pci_ops, - .mem_resource = >_pci_mem1_resource, - .mem_offset = 0xd0000000UL, - .io_resource = >_pci_io_mem1_resource, - .io_offset = 0x10000000UL - }, - .config_addr = PCI_1CONFIGURATION_ADDRESS, - .config_vreg = PCI_1CONFIGURATION_DATA_VIRTUAL_REGISTER, -}; - -static __init int __init ocelot_g_pci_init(void) -{ - unsigned long io_v_base; - - if (gt_io_size) { - io_v_base = (unsigned long) ioremap(gt_io_base, gt_io_size); - if (!io_v_base) - panic("Could not ioremap I/O port range"); - - set_io_port_base(io_v_base); - } - - register_pci_controller(>_bus0_controller.pcic); - register_pci_controller(>_bus1_controller.pcic); - - return 0; -} - -arch_initcall(ocelot_g_pci_init); diff --git a/arch/mips/pci/pci-ocelot.c b/arch/mips/pci/pci-ocelot.c deleted file mode 100644 index 3da8a4ee6ba..00000000000 --- a/arch/mips/pci/pci-ocelot.c +++ /dev/null @@ -1,107 +0,0 @@ -/* - * BRIEF MODULE DESCRIPTION - * Galileo Evaluation Boards PCI support. - * - * The general-purpose functions to read/write and configure the GT64120A's - * PCI registers (function names start with pci0 or pci1) are either direct - * copies of functions written by Galileo Technology, or are modifications - * of their functions to work with Linux 2.4 vs Linux 2.2. These functions - * are Copyright - Galileo Technology. - * - * Other functions are derived from other MIPS PCI implementations, or were - * written by RidgeRun, Inc, Copyright (C) 2000 RidgeRun, Inc. - * glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com - * - * Copyright 2001 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/init.h> -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/cache.h> -#include <asm/pci.h> -#include <asm/io.h> -#include <asm/gt64120.h> - -static inline unsigned int pci0ReadConfigReg(unsigned int offset) -{ - unsigned int DataForRegCf8; - unsigned int data; - - DataForRegCf8 = ((PCI_SLOT(device->devfn) << 11) | - (PCI_FUNC(device->devfn) << 8) | - (offset & ~0x3)) | 0x80000000; - GT_WRITE(GT_PCI0_CFGADDR_OFS, DataForRegCf8); - GT_READ(GT_PCI0_CFGDATA_OFS, &data); - - return data; -} - -static inline void pci0WriteConfigReg(unsigned int offset, unsigned int data) -{ - unsigned int DataForRegCf8; - - DataForRegCf8 = ((PCI_SLOT(device->devfn) << 11) | - (PCI_FUNC(device->devfn) << 8) | - (offset & ~0x3)) | 0x80000000; - GT_WRITE(GT_PCI0_CFGADDR_OFS, DataForRegCf8); - GT_WRITE(GT_PCI0_CFGDATA_OFS, data); -} - -static struct resource ocelot_mem_resource = { - iomem_resource.start = GT_PCI_MEM_BASE; - iomem_resource.end = GT_PCI_MEM_BASE + GT_PCI_MEM_BASE - 1; -}; - -static struct resource ocelot_io_resource = { - ioport_resource.start = GT_PCI_IO_BASE; - ioport_resource.end = GT_PCI_IO_BASE + GT_PCI_IO_SIZE - 1; -}; - -static struct pci_controller ocelot_pci_controller = { - .pci_ops = gt64120_pci_ops; - .mem_resource = &ocelot_mem_resource; - .io_resource = &ocelot_io_resource; -}; - -static int __init ocelot_pcibios_init(void) -{ - u32 tmp; - - GT_READ(GT_PCI0_CMD_OFS, &tmp); - GT_READ(GT_PCI0_BARE_OFS, &tmp); - - /* - * You have to enable bus mastering to configure any other - * card on the bus. - */ - tmp = pci0ReadConfigReg(PCI_COMMAND); - tmp |= PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_SERR; - pci0WriteConfigReg(PCI_COMMAND, tmp); - - register_pci_controller(&ocelot_pci_controller); -} - -arch_initcall(ocelot_pcibios_init); diff --git a/arch/mips/pci/pci-octeon.c b/arch/mips/pci/pci-octeon.c new file mode 100644 index 00000000000..59cccd95688 --- /dev/null +++ b/arch/mips/pci/pci-octeon.c @@ -0,0 +1,718 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2005-2009 Cavium Networks + */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/interrupt.h> +#include <linux/time.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/swiotlb.h> + +#include <asm/time.h> + +#include <asm/octeon/octeon.h> +#include <asm/octeon/cvmx-npi-defs.h> +#include <asm/octeon/cvmx-pci-defs.h> +#include <asm/octeon/pci-octeon.h> + +#include <dma-coherence.h> + +#define USE_OCTEON_INTERNAL_ARBITER + +/* + * Octeon's PCI controller uses did=3, subdid=2 for PCI IO + * addresses. Use PCI endian swapping 1 so no address swapping is + * necessary. The Linux io routines will endian swap the data. + */ +#define OCTEON_PCI_IOSPACE_BASE 0x80011a0400000000ull +#define OCTEON_PCI_IOSPACE_SIZE (1ull<<32) + +/* Octeon't PCI controller uses did=3, subdid=3 for PCI memory. */ +#define OCTEON_PCI_MEMSPACE_OFFSET (0x00011b0000000000ull) + +u64 octeon_bar1_pci_phys; + +/** + * This is the bit decoding used for the Octeon PCI controller addresses + */ +union octeon_pci_address { + uint64_t u64; + struct { + uint64_t upper:2; + uint64_t reserved:13; + uint64_t io:1; + uint64_t did:5; + uint64_t subdid:3; + uint64_t reserved2:4; + uint64_t endian_swap:2; + uint64_t reserved3:10; + uint64_t bus:8; + uint64_t dev:5; + uint64_t func:3; + uint64_t reg:8; + } s; +}; + +int __initconst (*octeon_pcibios_map_irq)(const struct pci_dev *dev, + u8 slot, u8 pin); +enum octeon_dma_bar_type octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_INVALID; + +/** + * Map a PCI device to the appropriate interrupt line + * + * @dev: The Linux PCI device structure for the device to map + * @slot: The slot number for this device on __BUS 0__. Linux + * enumerates through all the bridges and figures out the + * slot on Bus 0 where this device eventually hooks to. + * @pin: The PCI interrupt pin read from the device, then swizzled + * as it goes through each bridge. + * Returns Interrupt number for the device + */ +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + if (octeon_pcibios_map_irq) + return octeon_pcibios_map_irq(dev, slot, pin); + else + panic("octeon_pcibios_map_irq not set."); +} + + +/* + * Called to perform platform specific PCI setup + */ +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + uint16_t config; + uint32_t dconfig; + int pos; + /* + * Force the Cache line setting to 64 bytes. The standard + * Linux bus scan doesn't seem to set it. Octeon really has + * 128 byte lines, but Intel bridges get really upset if you + * try and set values above 64 bytes. Value is specified in + * 32bit words. + */ + pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 64 / 4); + /* Set latency timers for all devices */ + pci_write_config_byte(dev, PCI_LATENCY_TIMER, 64); + + /* Enable reporting System errors and parity errors on all devices */ + /* Enable parity checking and error reporting */ + pci_read_config_word(dev, PCI_COMMAND, &config); + config |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR; + pci_write_config_word(dev, PCI_COMMAND, config); + + if (dev->subordinate) { + /* Set latency timers on sub bridges */ + pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER, 64); + /* More bridge error detection */ + pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &config); + config |= PCI_BRIDGE_CTL_PARITY | PCI_BRIDGE_CTL_SERR; + pci_write_config_word(dev, PCI_BRIDGE_CONTROL, config); + } + + /* Enable the PCIe normal error reporting */ + config = PCI_EXP_DEVCTL_CERE; /* Correctable Error Reporting */ + config |= PCI_EXP_DEVCTL_NFERE; /* Non-Fatal Error Reporting */ + config |= PCI_EXP_DEVCTL_FERE; /* Fatal Error Reporting */ + config |= PCI_EXP_DEVCTL_URRE; /* Unsupported Request */ + pcie_capability_set_word(dev, PCI_EXP_DEVCTL, config); + + /* Find the Advanced Error Reporting capability */ + pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR); + if (pos) { + /* Clear Uncorrectable Error Status */ + pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, + &dconfig); + pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, + dconfig); + /* Enable reporting of all uncorrectable errors */ + /* Uncorrectable Error Mask - turned on bits disable errors */ + pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_MASK, 0); + /* + * Leave severity at HW default. This only controls if + * errors are reported as uncorrectable or + * correctable, not if the error is reported. + */ + /* PCI_ERR_UNCOR_SEVER - Uncorrectable Error Severity */ + /* Clear Correctable Error Status */ + pci_read_config_dword(dev, pos + PCI_ERR_COR_STATUS, &dconfig); + pci_write_config_dword(dev, pos + PCI_ERR_COR_STATUS, dconfig); + /* Enable reporting of all correctable errors */ + /* Correctable Error Mask - turned on bits disable errors */ + pci_write_config_dword(dev, pos + PCI_ERR_COR_MASK, 0); + /* Advanced Error Capabilities */ + pci_read_config_dword(dev, pos + PCI_ERR_CAP, &dconfig); + /* ECRC Generation Enable */ + if (config & PCI_ERR_CAP_ECRC_GENC) + config |= PCI_ERR_CAP_ECRC_GENE; + /* ECRC Check Enable */ + if (config & PCI_ERR_CAP_ECRC_CHKC) + config |= PCI_ERR_CAP_ECRC_CHKE; + pci_write_config_dword(dev, pos + PCI_ERR_CAP, dconfig); + /* PCI_ERR_HEADER_LOG - Header Log Register (16 bytes) */ + /* Report all errors to the root complex */ + pci_write_config_dword(dev, pos + PCI_ERR_ROOT_COMMAND, + PCI_ERR_ROOT_CMD_COR_EN | + PCI_ERR_ROOT_CMD_NONFATAL_EN | + PCI_ERR_ROOT_CMD_FATAL_EN); + /* Clear the Root status register */ + pci_read_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, &dconfig); + pci_write_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, dconfig); + } + + dev->dev.archdata.dma_ops = octeon_pci_dma_map_ops; + + return 0; +} + +/** + * Return the mapping of PCI device number to IRQ line. Each + * character in the return string represents the interrupt + * line for the device at that position. Device 1 maps to the + * first character, etc. The characters A-D are used for PCI + * interrupts. + * + * Returns PCI interrupt mapping + */ +const char *octeon_get_pci_interrupts(void) +{ + /* + * Returning an empty string causes the interrupts to be + * routed based on the PCI specification. From the PCI spec: + * + * INTA# of Device Number 0 is connected to IRQW on the system + * board. (Device Number has no significance regarding being + * located on the system board or in a connector.) INTA# of + * Device Number 1 is connected to IRQX on the system + * board. INTA# of Device Number 2 is connected to IRQY on the + * system board. INTA# of Device Number 3 is connected to IRQZ + * on the system board. The table below describes how each + * agent's INTx# lines are connected to the system board + * interrupt lines. The following equation can be used to + * determine to which INTx# signal on the system board a given + * device's INTx# line(s) is connected. + * + * MB = (D + I) MOD 4 MB = System board Interrupt (IRQW = 0, + * IRQX = 1, IRQY = 2, and IRQZ = 3) D = Device Number I = + * Interrupt Number (INTA# = 0, INTB# = 1, INTC# = 2, and + * INTD# = 3) + */ + switch (octeon_bootinfo->board_type) { + case CVMX_BOARD_TYPE_NAO38: + /* This is really the NAC38 */ + return "AAAAADABAAAAAAAAAAAAAAAAAAAAAAAA"; + case CVMX_BOARD_TYPE_EBH3100: + case CVMX_BOARD_TYPE_CN3010_EVB_HS5: + case CVMX_BOARD_TYPE_CN3005_EVB_HS5: + return "AAABAAAAAAAAAAAAAAAAAAAAAAAAAAAA"; + case CVMX_BOARD_TYPE_BBGW_REF: + return "AABCD"; + case CVMX_BOARD_TYPE_THUNDER: + case CVMX_BOARD_TYPE_EBH3000: + default: + return ""; + } +} + +/** + * Map a PCI device to the appropriate interrupt line + * + * @dev: The Linux PCI device structure for the device to map + * @slot: The slot number for this device on __BUS 0__. Linux + * enumerates through all the bridges and figures out the + * slot on Bus 0 where this device eventually hooks to. + * @pin: The PCI interrupt pin read from the device, then swizzled + * as it goes through each bridge. + * Returns Interrupt number for the device + */ +int __init octeon_pci_pcibios_map_irq(const struct pci_dev *dev, + u8 slot, u8 pin) +{ + int irq_num; + const char *interrupts; + int dev_num; + + /* Get the board specific interrupt mapping */ + interrupts = octeon_get_pci_interrupts(); + + dev_num = dev->devfn >> 3; + if (dev_num < strlen(interrupts)) + irq_num = ((interrupts[dev_num] - 'A' + pin - 1) & 3) + + OCTEON_IRQ_PCI_INT0; + else + irq_num = ((slot + pin - 3) & 3) + OCTEON_IRQ_PCI_INT0; + return irq_num; +} + + +/* + * Read a value from configuration space + */ +static int octeon_read_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 *val) +{ + union octeon_pci_address pci_addr; + + pci_addr.u64 = 0; + pci_addr.s.upper = 2; + pci_addr.s.io = 1; + pci_addr.s.did = 3; + pci_addr.s.subdid = 1; + pci_addr.s.endian_swap = 1; + pci_addr.s.bus = bus->number; + pci_addr.s.dev = devfn >> 3; + pci_addr.s.func = devfn & 0x7; + pci_addr.s.reg = reg; + +#if PCI_CONFIG_SPACE_DELAY + udelay(PCI_CONFIG_SPACE_DELAY); +#endif + switch (size) { + case 4: + *val = le32_to_cpu(cvmx_read64_uint32(pci_addr.u64)); + return PCIBIOS_SUCCESSFUL; + case 2: + *val = le16_to_cpu(cvmx_read64_uint16(pci_addr.u64)); + return PCIBIOS_SUCCESSFUL; + case 1: + *val = cvmx_read64_uint8(pci_addr.u64); + return PCIBIOS_SUCCESSFUL; + } + return PCIBIOS_FUNC_NOT_SUPPORTED; +} + + +/* + * Write a value to PCI configuration space + */ +static int octeon_write_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 val) +{ + union octeon_pci_address pci_addr; + + pci_addr.u64 = 0; + pci_addr.s.upper = 2; + pci_addr.s.io = 1; + pci_addr.s.did = 3; + pci_addr.s.subdid = 1; + pci_addr.s.endian_swap = 1; + pci_addr.s.bus = bus->number; + pci_addr.s.dev = devfn >> 3; + pci_addr.s.func = devfn & 0x7; + pci_addr.s.reg = reg; + +#if PCI_CONFIG_SPACE_DELAY + udelay(PCI_CONFIG_SPACE_DELAY); +#endif + switch (size) { + case 4: + cvmx_write64_uint32(pci_addr.u64, cpu_to_le32(val)); + return PCIBIOS_SUCCESSFUL; + case 2: + cvmx_write64_uint16(pci_addr.u64, cpu_to_le16(val)); + return PCIBIOS_SUCCESSFUL; + case 1: + cvmx_write64_uint8(pci_addr.u64, val); + return PCIBIOS_SUCCESSFUL; + } + return PCIBIOS_FUNC_NOT_SUPPORTED; +} + + +static struct pci_ops octeon_pci_ops = { + octeon_read_config, + octeon_write_config, +}; + +static struct resource octeon_pci_mem_resource = { + .start = 0, + .end = 0, + .name = "Octeon PCI MEM", + .flags = IORESOURCE_MEM, +}; + +/* + * PCI ports must be above 16KB so the ISA bus filtering in the PCI-X to PCI + * bridge + */ +static struct resource octeon_pci_io_resource = { + .start = 0x4000, + .end = OCTEON_PCI_IOSPACE_SIZE - 1, + .name = "Octeon PCI IO", + .flags = IORESOURCE_IO, +}; + +static struct pci_controller octeon_pci_controller = { + .pci_ops = &octeon_pci_ops, + .mem_resource = &octeon_pci_mem_resource, + .mem_offset = OCTEON_PCI_MEMSPACE_OFFSET, + .io_resource = &octeon_pci_io_resource, + .io_offset = 0, + .io_map_base = OCTEON_PCI_IOSPACE_BASE, +}; + + +/* + * Low level initialize the Octeon PCI controller + */ +static void octeon_pci_initialize(void) +{ + union cvmx_pci_cfg01 cfg01; + union cvmx_npi_ctl_status ctl_status; + union cvmx_pci_ctl_status_2 ctl_status_2; + union cvmx_pci_cfg19 cfg19; + union cvmx_pci_cfg16 cfg16; + union cvmx_pci_cfg22 cfg22; + union cvmx_pci_cfg56 cfg56; + + /* Reset the PCI Bus */ + cvmx_write_csr(CVMX_CIU_SOFT_PRST, 0x1); + cvmx_read_csr(CVMX_CIU_SOFT_PRST); + + udelay(2000); /* Hold PCI reset for 2 ms */ + + ctl_status.u64 = 0; /* cvmx_read_csr(CVMX_NPI_CTL_STATUS); */ + ctl_status.s.max_word = 1; + ctl_status.s.timer = 1; + cvmx_write_csr(CVMX_NPI_CTL_STATUS, ctl_status.u64); + + /* Deassert PCI reset and advertize PCX Host Mode Device Capability + (64b) */ + cvmx_write_csr(CVMX_CIU_SOFT_PRST, 0x4); + cvmx_read_csr(CVMX_CIU_SOFT_PRST); + + udelay(2000); /* Wait 2 ms after deasserting PCI reset */ + + ctl_status_2.u32 = 0; + ctl_status_2.s.tsr_hwm = 1; /* Initializes to 0. Must be set + before any PCI reads. */ + ctl_status_2.s.bar2pres = 1; /* Enable BAR2 */ + ctl_status_2.s.bar2_enb = 1; + ctl_status_2.s.bar2_cax = 1; /* Don't use L2 */ + ctl_status_2.s.bar2_esx = 1; + ctl_status_2.s.pmo_amod = 1; /* Round robin priority */ + if (octeon_dma_bar_type == OCTEON_DMA_BAR_TYPE_BIG) { + /* BAR1 hole */ + ctl_status_2.s.bb1_hole = OCTEON_PCI_BAR1_HOLE_BITS; + ctl_status_2.s.bb1_siz = 1; /* BAR1 is 2GB */ + ctl_status_2.s.bb_ca = 1; /* Don't use L2 with big bars */ + ctl_status_2.s.bb_es = 1; /* Big bar in byte swap mode */ + ctl_status_2.s.bb1 = 1; /* BAR1 is big */ + ctl_status_2.s.bb0 = 1; /* BAR0 is big */ + } + + octeon_npi_write32(CVMX_NPI_PCI_CTL_STATUS_2, ctl_status_2.u32); + udelay(2000); /* Wait 2 ms before doing PCI reads */ + + ctl_status_2.u32 = octeon_npi_read32(CVMX_NPI_PCI_CTL_STATUS_2); + pr_notice("PCI Status: %s %s-bit\n", + ctl_status_2.s.ap_pcix ? "PCI-X" : "PCI", + ctl_status_2.s.ap_64ad ? "64" : "32"); + + if (OCTEON_IS_MODEL(OCTEON_CN58XX) || OCTEON_IS_MODEL(OCTEON_CN50XX)) { + union cvmx_pci_cnt_reg cnt_reg_start; + union cvmx_pci_cnt_reg cnt_reg_end; + unsigned long cycles, pci_clock; + + cnt_reg_start.u64 = cvmx_read_csr(CVMX_NPI_PCI_CNT_REG); + cycles = read_c0_cvmcount(); + udelay(1000); + cnt_reg_end.u64 = cvmx_read_csr(CVMX_NPI_PCI_CNT_REG); + cycles = read_c0_cvmcount() - cycles; + pci_clock = (cnt_reg_end.s.pcicnt - cnt_reg_start.s.pcicnt) / + (cycles / (mips_hpt_frequency / 1000000)); + pr_notice("PCI Clock: %lu MHz\n", pci_clock); + } + + /* + * TDOMC must be set to one in PCI mode. TDOMC should be set to 4 + * in PCI-X mode to allow four outstanding splits. Otherwise, + * should not change from its reset value. Don't write PCI_CFG19 + * in PCI mode (0x82000001 reset value), write it to 0x82000004 + * after PCI-X mode is known. MRBCI,MDWE,MDRE -> must be zero. + * MRBCM -> must be one. + */ + if (ctl_status_2.s.ap_pcix) { + cfg19.u32 = 0; + /* + * Target Delayed/Split request outstanding maximum + * count. [1..31] and 0=32. NOTE: If the user + * programs these bits beyond the Designed Maximum + * outstanding count, then the designed maximum table + * depth will be used instead. No additional + * Deferred/Split transactions will be accepted if + * this outstanding maximum count is + * reached. Furthermore, no additional deferred/split + * transactions will be accepted if the I/O delay/ I/O + * Split Request outstanding maximum is reached. + */ + cfg19.s.tdomc = 4; + /* + * Master Deferred Read Request Outstanding Max Count + * (PCI only). CR4C[26:24] Max SAC cycles MAX DAC + * cycles 000 8 4 001 1 0 010 2 1 011 3 1 100 4 2 101 + * 5 2 110 6 3 111 7 3 For example, if these bits are + * programmed to 100, the core can support 2 DAC + * cycles, 4 SAC cycles or a combination of 1 DAC and + * 2 SAC cycles. NOTE: For the PCI-X maximum + * outstanding split transactions, refer to + * CRE0[22:20]. + */ + cfg19.s.mdrrmc = 2; + /* + * Master Request (Memory Read) Byte Count/Byte Enable + * select. 0 = Byte Enables valid. In PCI mode, a + * burst transaction cannot be performed using Memory + * Read command=4?h6. 1 = DWORD Byte Count valid + * (default). In PCI Mode, the memory read byte + * enables are automatically generated by the + * core. Note: N3 Master Request transaction sizes are + * always determined through the + * am_attr[<35:32>|<7:0>] field. + */ + cfg19.s.mrbcm = 1; + octeon_npi_write32(CVMX_NPI_PCI_CFG19, cfg19.u32); + } + + + cfg01.u32 = 0; + cfg01.s.msae = 1; /* Memory Space Access Enable */ + cfg01.s.me = 1; /* Master Enable */ + cfg01.s.pee = 1; /* PERR# Enable */ + cfg01.s.see = 1; /* System Error Enable */ + cfg01.s.fbbe = 1; /* Fast Back to Back Transaction Enable */ + + octeon_npi_write32(CVMX_NPI_PCI_CFG01, cfg01.u32); + +#ifdef USE_OCTEON_INTERNAL_ARBITER + /* + * When OCTEON is a PCI host, most systems will use OCTEON's + * internal arbiter, so must enable it before any PCI/PCI-X + * traffic can occur. + */ + { + union cvmx_npi_pci_int_arb_cfg pci_int_arb_cfg; + + pci_int_arb_cfg.u64 = 0; + pci_int_arb_cfg.s.en = 1; /* Internal arbiter enable */ + cvmx_write_csr(CVMX_NPI_PCI_INT_ARB_CFG, pci_int_arb_cfg.u64); + } +#endif /* USE_OCTEON_INTERNAL_ARBITER */ + + /* + * Preferably written to 1 to set MLTD. [RDSATI,TRTAE, + * TWTAE,TMAE,DPPMR -> must be zero. TILT -> must not be set to + * 1..7. + */ + cfg16.u32 = 0; + cfg16.s.mltd = 1; /* Master Latency Timer Disable */ + octeon_npi_write32(CVMX_NPI_PCI_CFG16, cfg16.u32); + + /* + * Should be written to 0x4ff00. MTTV -> must be zero. + * FLUSH -> must be 1. MRV -> should be 0xFF. + */ + cfg22.u32 = 0; + /* Master Retry Value [1..255] and 0=infinite */ + cfg22.s.mrv = 0xff; + /* + * AM_DO_FLUSH_I control NOTE: This bit MUST BE ONE for proper + * N3K operation. + */ + cfg22.s.flush = 1; + octeon_npi_write32(CVMX_NPI_PCI_CFG22, cfg22.u32); + + /* + * MOST Indicates the maximum number of outstanding splits (in -1 + * notation) when OCTEON is in PCI-X mode. PCI-X performance is + * affected by the MOST selection. Should generally be written + * with one of 0x3be807, 0x2be807, 0x1be807, or 0x0be807, + * depending on the desired MOST of 3, 2, 1, or 0, respectively. + */ + cfg56.u32 = 0; + cfg56.s.pxcid = 7; /* RO - PCI-X Capability ID */ + cfg56.s.ncp = 0xe8; /* RO - Next Capability Pointer */ + cfg56.s.dpere = 1; /* Data Parity Error Recovery Enable */ + cfg56.s.roe = 1; /* Relaxed Ordering Enable */ + cfg56.s.mmbc = 1; /* Maximum Memory Byte Count + [0=512B,1=1024B,2=2048B,3=4096B] */ + cfg56.s.most = 3; /* Maximum outstanding Split transactions [0=1 + .. 7=32] */ + + octeon_npi_write32(CVMX_NPI_PCI_CFG56, cfg56.u32); + + /* + * Affects PCI performance when OCTEON services reads to its + * BAR1/BAR2. Refer to Section 10.6.1. The recommended values are + * 0x22, 0x33, and 0x33 for PCI_READ_CMD_6, PCI_READ_CMD_C, and + * PCI_READ_CMD_E, respectively. Unfortunately due to errata DDR-700, + * these values need to be changed so they won't possibly prefetch off + * of the end of memory if PCI is DMAing a buffer at the end of + * memory. Note that these values differ from their reset values. + */ + octeon_npi_write32(CVMX_NPI_PCI_READ_CMD_6, 0x21); + octeon_npi_write32(CVMX_NPI_PCI_READ_CMD_C, 0x31); + octeon_npi_write32(CVMX_NPI_PCI_READ_CMD_E, 0x31); +} + + +/* + * Initialize the Octeon PCI controller + */ +static int __init octeon_pci_setup(void) +{ + union cvmx_npi_mem_access_subidx mem_access; + int index; + + /* Only these chips have PCI */ + if (octeon_has_feature(OCTEON_FEATURE_PCIE)) + return 0; + + /* Point pcibios_map_irq() to the PCI version of it */ + octeon_pcibios_map_irq = octeon_pci_pcibios_map_irq; + + /* Only use the big bars on chips that support it */ + if (OCTEON_IS_MODEL(OCTEON_CN31XX) || + OCTEON_IS_MODEL(OCTEON_CN38XX_PASS2) || + OCTEON_IS_MODEL(OCTEON_CN38XX_PASS1)) + octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_SMALL; + else + octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_BIG; + + if (!octeon_is_pci_host()) { + pr_notice("Not in host mode, PCI Controller not initialized\n"); + return 0; + } + + /* PCI I/O and PCI MEM values */ + set_io_port_base(OCTEON_PCI_IOSPACE_BASE); + ioport_resource.start = 0; + ioport_resource.end = OCTEON_PCI_IOSPACE_SIZE - 1; + + pr_notice("%s Octeon big bar support\n", + (octeon_dma_bar_type == + OCTEON_DMA_BAR_TYPE_BIG) ? "Enabling" : "Disabling"); + + octeon_pci_initialize(); + + mem_access.u64 = 0; + mem_access.s.esr = 1; /* Endian-Swap on read. */ + mem_access.s.esw = 1; /* Endian-Swap on write. */ + mem_access.s.nsr = 0; /* No-Snoop on read. */ + mem_access.s.nsw = 0; /* No-Snoop on write. */ + mem_access.s.ror = 0; /* Relax Read on read. */ + mem_access.s.row = 0; /* Relax Order on write. */ + mem_access.s.ba = 0; /* PCI Address bits [63:36]. */ + cvmx_write_csr(CVMX_NPI_MEM_ACCESS_SUBID3, mem_access.u64); + + /* + * Remap the Octeon BAR 2 above all 32 bit devices + * (0x8000000000ul). This is done here so it is remapped + * before the readl()'s below. We don't want BAR2 overlapping + * with BAR0/BAR1 during these reads. + */ + octeon_npi_write32(CVMX_NPI_PCI_CFG08, + (u32)(OCTEON_BAR2_PCI_ADDRESS & 0xffffffffull)); + octeon_npi_write32(CVMX_NPI_PCI_CFG09, + (u32)(OCTEON_BAR2_PCI_ADDRESS >> 32)); + + if (octeon_dma_bar_type == OCTEON_DMA_BAR_TYPE_BIG) { + /* Remap the Octeon BAR 0 to 0-2GB */ + octeon_npi_write32(CVMX_NPI_PCI_CFG04, 0); + octeon_npi_write32(CVMX_NPI_PCI_CFG05, 0); + + /* + * Remap the Octeon BAR 1 to map 2GB-4GB (minus the + * BAR 1 hole). + */ + octeon_npi_write32(CVMX_NPI_PCI_CFG06, 2ul << 30); + octeon_npi_write32(CVMX_NPI_PCI_CFG07, 0); + + /* BAR1 movable mappings set for identity mapping */ + octeon_bar1_pci_phys = 0x80000000ull; + for (index = 0; index < 32; index++) { + union cvmx_pci_bar1_indexx bar1_index; + + bar1_index.u32 = 0; + /* Address bits[35:22] sent to L2C */ + bar1_index.s.addr_idx = + (octeon_bar1_pci_phys >> 22) + index; + /* Don't put PCI accesses in L2. */ + bar1_index.s.ca = 1; + /* Endian Swap Mode */ + bar1_index.s.end_swp = 1; + /* Set '1' when the selected address range is valid. */ + bar1_index.s.addr_v = 1; + octeon_npi_write32(CVMX_NPI_PCI_BAR1_INDEXX(index), + bar1_index.u32); + } + + /* Devices go after BAR1 */ + octeon_pci_mem_resource.start = + OCTEON_PCI_MEMSPACE_OFFSET + (4ul << 30) - + (OCTEON_PCI_BAR1_HOLE_SIZE << 20); + octeon_pci_mem_resource.end = + octeon_pci_mem_resource.start + (1ul << 30); + } else { + /* Remap the Octeon BAR 0 to map 128MB-(128MB+4KB) */ + octeon_npi_write32(CVMX_NPI_PCI_CFG04, 128ul << 20); + octeon_npi_write32(CVMX_NPI_PCI_CFG05, 0); + + /* Remap the Octeon BAR 1 to map 0-128MB */ + octeon_npi_write32(CVMX_NPI_PCI_CFG06, 0); + octeon_npi_write32(CVMX_NPI_PCI_CFG07, 0); + + /* BAR1 movable regions contiguous to cover the swiotlb */ + octeon_bar1_pci_phys = + virt_to_phys(octeon_swiotlb) & ~((1ull << 22) - 1); + + for (index = 0; index < 32; index++) { + union cvmx_pci_bar1_indexx bar1_index; + + bar1_index.u32 = 0; + /* Address bits[35:22] sent to L2C */ + bar1_index.s.addr_idx = + (octeon_bar1_pci_phys >> 22) + index; + /* Don't put PCI accesses in L2. */ + bar1_index.s.ca = 1; + /* Endian Swap Mode */ + bar1_index.s.end_swp = 1; + /* Set '1' when the selected address range is valid. */ + bar1_index.s.addr_v = 1; + octeon_npi_write32(CVMX_NPI_PCI_BAR1_INDEXX(index), + bar1_index.u32); + } + + /* Devices go after BAR0 */ + octeon_pci_mem_resource.start = + OCTEON_PCI_MEMSPACE_OFFSET + (128ul << 20) + + (4ul << 10); + octeon_pci_mem_resource.end = + octeon_pci_mem_resource.start + (1ul << 30); + } + + register_pci_controller(&octeon_pci_controller); + + /* + * Clear any errors that might be pending from before the bus + * was setup properly. + */ + cvmx_write_csr(CVMX_NPI_PCI_INT_SUM2, -1); + + if (IS_ERR(platform_device_register_simple("octeon_pci_edac", + -1, NULL, 0))) + pr_err("Registation of co_pci_edac failed!\n"); + + octeon_pci_dma_init(); + + return 0; +} + +arch_initcall(octeon_pci_setup); diff --git a/arch/mips/pci/pci-rc32434.c b/arch/mips/pci/pci-rc32434.c new file mode 100644 index 00000000000..7f6ce6d734c --- /dev/null +++ b/arch/mips/pci/pci-rc32434.c @@ -0,0 +1,231 @@ +/* + * BRIEF MODULE DESCRIPTION + * PCI initialization for IDT EB434 board + * + * Copyright 2004 IDT Inc. (rischelp@idt.com) + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> + +#include <asm/mach-rc32434/rc32434.h> +#include <asm/mach-rc32434/pci.h> + +#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_WRITE 1 + +/* define an unsigned array for the PCI registers */ +static unsigned int korina_cnfg_regs[25] = { + KORINA_CNFG1, KORINA_CNFG2, KORINA_CNFG3, KORINA_CNFG4, + KORINA_CNFG5, KORINA_CNFG6, KORINA_CNFG7, KORINA_CNFG8, + KORINA_CNFG9, KORINA_CNFG10, KORINA_CNFG11, KORINA_CNFG12, + KORINA_CNFG13, KORINA_CNFG14, KORINA_CNFG15, KORINA_CNFG16, + KORINA_CNFG17, KORINA_CNFG18, KORINA_CNFG19, KORINA_CNFG20, + KORINA_CNFG21, KORINA_CNFG22, KORINA_CNFG23, KORINA_CNFG24 +}; +static struct resource rc32434_res_pci_mem1; +static struct resource rc32434_res_pci_mem2; + +static struct resource rc32434_res_pci_mem1 = { + .name = "PCI MEM1", + .start = 0x50000000, + .end = 0x5FFFFFFF, + .flags = IORESOURCE_MEM, + .sibling = NULL, + .child = &rc32434_res_pci_mem2 +}; + +static struct resource rc32434_res_pci_mem2 = { + .name = "PCI Mem2", + .start = 0x60000000, + .end = 0x6FFFFFFF, + .flags = IORESOURCE_MEM, + .parent = &rc32434_res_pci_mem1, + .sibling = NULL, + .child = NULL +}; + +static struct resource rc32434_res_pci_io1 = { + .name = "PCI I/O1", + .start = 0x18800000, + .end = 0x188FFFFF, + .flags = IORESOURCE_IO, +}; + +extern struct pci_ops rc32434_pci_ops; + +#define PCI_MEM1_START PCI_ADDR_START +#define PCI_MEM1_END (PCI_ADDR_START + CPUTOPCI_MEM_WIN - 1) +#define PCI_MEM2_START (PCI_ADDR_START + CPUTOPCI_MEM_WIN) +#define PCI_MEM2_END (PCI_ADDR_START + (2 * CPUTOPCI_MEM_WIN) - 1) +#define PCI_IO1_START (PCI_ADDR_START + (2 * CPUTOPCI_MEM_WIN)) +#define PCI_IO1_END \ + (PCI_ADDR_START + (2 * CPUTOPCI_MEM_WIN) + CPUTOPCI_IO_WIN - 1) +#define PCI_IO2_START \ + (PCI_ADDR_START + (2 * CPUTOPCI_MEM_WIN) + CPUTOPCI_IO_WIN) +#define PCI_IO2_END \ + (PCI_ADDR_START + (2 * CPUTOPCI_MEM_WIN) + (2 * CPUTOPCI_IO_WIN) - 1) + +struct pci_controller rc32434_controller2; + +struct pci_controller rc32434_controller = { + .pci_ops = &rc32434_pci_ops, + .mem_resource = &rc32434_res_pci_mem1, + .io_resource = &rc32434_res_pci_io1, + .mem_offset = 0, + .io_offset = 0, + +}; + +#ifdef __MIPSEB__ +#define PCI_ENDIAN_FLAG PCILBAC_sb_m +#else +#define PCI_ENDIAN_FLAG 0 +#endif + +static int __init rc32434_pcibridge_init(void) +{ + unsigned int pcicvalue, pcicdata = 0; + unsigned int dummyread, pcicntlval; + int loopCount; + unsigned int pci_config_addr; + + pcicvalue = rc32434_pci->pcic; + pcicvalue = (pcicvalue >> PCIM_SHFT) & PCIM_BIT_LEN; + if (!((pcicvalue == PCIM_H_EA) || + (pcicvalue == PCIM_H_IA_FIX) || + (pcicvalue == PCIM_H_IA_RR))) { + pr_err("PCI init error!!!\n"); + /* Not in Host Mode, return ERROR */ + return -1; + } + /* Enables the Idle Grant mode, Arbiter Parking */ + pcicdata |= (PCI_CTL_IGM | PCI_CTL_EAP | PCI_CTL_EN); + rc32434_pci->pcic = pcicdata; /* Enable the PCI bus Interface */ + /* Zero out the PCI status & PCI Status Mask */ + for (;;) { + pcicdata = rc32434_pci->pcis; + if (!(pcicdata & PCI_STAT_RIP)) + break; + } + + rc32434_pci->pcis = 0; + rc32434_pci->pcism = 0xFFFFFFFF; + /* Zero out the PCI decoupled registers */ + rc32434_pci->pcidac = 0; /* + * disable PCI decoupled accesses at + * initialization + */ + rc32434_pci->pcidas = 0; /* clear the status */ + rc32434_pci->pcidasm = 0x0000007F; /* Mask all the interrupts */ + /* Mask PCI Messaging Interrupts */ + rc32434_pci_msg->pciiic = 0; + rc32434_pci_msg->pciiim = 0xFFFFFFFF; + rc32434_pci_msg->pciioic = 0; + rc32434_pci_msg->pciioim = 0; + + + /* Setup PCILB0 as Memory Window */ + rc32434_pci->pcilba[0].address = (unsigned int) (PCI_ADDR_START); + + /* setup the PCI map address as same as the local address */ + + rc32434_pci->pcilba[0].mapping = (unsigned int) (PCI_ADDR_START); + + + /* Setup PCILBA1 as MEM */ + rc32434_pci->pcilba[0].control = + (((SIZE_256MB & 0x1f) << PCI_LBAC_SIZE_BIT) | PCI_ENDIAN_FLAG); + dummyread = rc32434_pci->pcilba[0].control; /* flush the CPU write Buffers */ + rc32434_pci->pcilba[1].address = 0x60000000; + rc32434_pci->pcilba[1].mapping = 0x60000000; + + /* setup PCILBA2 as IO Window */ + rc32434_pci->pcilba[1].control = + (((SIZE_256MB & 0x1f) << PCI_LBAC_SIZE_BIT) | PCI_ENDIAN_FLAG); + dummyread = rc32434_pci->pcilba[1].control; /* flush the CPU write Buffers */ + rc32434_pci->pcilba[2].address = 0x18C00000; + rc32434_pci->pcilba[2].mapping = 0x18FFFFFF; + + /* setup PCILBA2 as IO Window */ + rc32434_pci->pcilba[2].control = + (((SIZE_4MB & 0x1f) << PCI_LBAC_SIZE_BIT) | PCI_ENDIAN_FLAG); + dummyread = rc32434_pci->pcilba[2].control; /* flush the CPU write Buffers */ + + /* Setup PCILBA3 as IO Window */ + rc32434_pci->pcilba[3].address = 0x18800000; + rc32434_pci->pcilba[3].mapping = 0x18800000; + rc32434_pci->pcilba[3].control = + ((((SIZE_1MB & 0x1ff) << PCI_LBAC_SIZE_BIT) | PCI_LBAC_MSI) | + PCI_ENDIAN_FLAG); + dummyread = rc32434_pci->pcilba[3].control; /* flush the CPU write Buffers */ + + pci_config_addr = (unsigned int) (0x80000004); + for (loopCount = 0; loopCount < 24; loopCount++) { + rc32434_pci->pcicfga = pci_config_addr; + dummyread = rc32434_pci->pcicfga; + rc32434_pci->pcicfgd = korina_cnfg_regs[loopCount]; + dummyread = rc32434_pci->pcicfgd; + pci_config_addr += 4; + } + rc32434_pci->pcitc = + (unsigned int) ((PCITC_RTIMER_VAL & 0xff) << PCI_TC_RTIMER_BIT) | + ((PCITC_DTIMER_VAL & 0xff) << PCI_TC_DTIMER_BIT); + + pcicntlval = rc32434_pci->pcic; + pcicntlval &= ~PCI_CTL_TNR; + rc32434_pci->pcic = pcicntlval; + pcicntlval = rc32434_pci->pcic; + + return 0; +} + +static int __init rc32434_pci_init(void) +{ + void __iomem *io_map_base; + + pr_info("PCI: Initializing PCI\n"); + + ioport_resource.start = rc32434_res_pci_io1.start; + ioport_resource.end = rc32434_res_pci_io1.end; + + rc32434_pcibridge_init(); + + io_map_base = ioremap(rc32434_res_pci_io1.start, + resource_size(&rc32434_res_pci_io1)); + + if (!io_map_base) + return -ENOMEM; + + rc32434_controller.io_map_base = + (unsigned long)io_map_base - rc32434_res_pci_io1.start; + + register_pci_controller(&rc32434_controller); + rc32434_sync(); + + return 0; +} + +arch_initcall(rc32434_pci_init); diff --git a/arch/mips/pci/pci-rt3883.c b/arch/mips/pci/pci-rt3883.c new file mode 100644 index 00000000000..72919aeef42 --- /dev/null +++ b/arch/mips/pci/pci-rt3883.c @@ -0,0 +1,611 @@ +/* + * Ralink RT3662/RT3883 SoC PCI support + * + * Copyright (C) 2011-2013 Gabor Juhos <juhosg@openwrt.org> + * + * Parts of this file are based on Ralink's 2.6.21 BSP + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/io.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_irq.h> +#include <linux/of_pci.h> +#include <linux/platform_device.h> + +#include <asm/mach-ralink/rt3883.h> +#include <asm/mach-ralink/ralink_regs.h> + +#define RT3883_MEMORY_BASE 0x00000000 +#define RT3883_MEMORY_SIZE 0x02000000 + +#define RT3883_PCI_REG_PCICFG 0x00 +#define RT3883_PCICFG_P2P_BR_DEVNUM_M 0xf +#define RT3883_PCICFG_P2P_BR_DEVNUM_S 16 +#define RT3883_PCICFG_PCIRST BIT(1) +#define RT3883_PCI_REG_PCIRAW 0x04 +#define RT3883_PCI_REG_PCIINT 0x08 +#define RT3883_PCI_REG_PCIENA 0x0c + +#define RT3883_PCI_REG_CFGADDR 0x20 +#define RT3883_PCI_REG_CFGDATA 0x24 +#define RT3883_PCI_REG_MEMBASE 0x28 +#define RT3883_PCI_REG_IOBASE 0x2c +#define RT3883_PCI_REG_ARBCTL 0x80 + +#define RT3883_PCI_REG_BASE(_x) (0x1000 + (_x) * 0x1000) +#define RT3883_PCI_REG_BAR0SETUP(_x) (RT3883_PCI_REG_BASE((_x)) + 0x10) +#define RT3883_PCI_REG_IMBASEBAR0(_x) (RT3883_PCI_REG_BASE((_x)) + 0x18) +#define RT3883_PCI_REG_ID(_x) (RT3883_PCI_REG_BASE((_x)) + 0x30) +#define RT3883_PCI_REG_CLASS(_x) (RT3883_PCI_REG_BASE((_x)) + 0x34) +#define RT3883_PCI_REG_SUBID(_x) (RT3883_PCI_REG_BASE((_x)) + 0x38) +#define RT3883_PCI_REG_STATUS(_x) (RT3883_PCI_REG_BASE((_x)) + 0x50) + +#define RT3883_PCI_MODE_NONE 0 +#define RT3883_PCI_MODE_PCI BIT(0) +#define RT3883_PCI_MODE_PCIE BIT(1) +#define RT3883_PCI_MODE_BOTH (RT3883_PCI_MODE_PCI | RT3883_PCI_MODE_PCIE) + +#define RT3883_PCI_IRQ_COUNT 32 + +#define RT3883_P2P_BR_DEVNUM 1 + +struct rt3883_pci_controller { + void __iomem *base; + spinlock_t lock; + + struct device_node *intc_of_node; + struct irq_domain *irq_domain; + + struct pci_controller pci_controller; + struct resource io_res; + struct resource mem_res; + + bool pcie_ready; +}; + +static inline struct rt3883_pci_controller * +pci_bus_to_rt3883_controller(struct pci_bus *bus) +{ + struct pci_controller *hose; + + hose = (struct pci_controller *) bus->sysdata; + return container_of(hose, struct rt3883_pci_controller, pci_controller); +} + +static inline u32 rt3883_pci_r32(struct rt3883_pci_controller *rpc, + unsigned reg) +{ + return ioread32(rpc->base + reg); +} + +static inline void rt3883_pci_w32(struct rt3883_pci_controller *rpc, + u32 val, unsigned reg) +{ + iowrite32(val, rpc->base + reg); +} + +static inline u32 rt3883_pci_get_cfgaddr(unsigned int bus, unsigned int slot, + unsigned int func, unsigned int where) +{ + return (bus << 16) | (slot << 11) | (func << 8) | (where & 0xfc) | + 0x80000000; +} + +static u32 rt3883_pci_read_cfg32(struct rt3883_pci_controller *rpc, + unsigned bus, unsigned slot, + unsigned func, unsigned reg) +{ + unsigned long flags; + u32 address; + u32 ret; + + address = rt3883_pci_get_cfgaddr(bus, slot, func, reg); + + spin_lock_irqsave(&rpc->lock, flags); + rt3883_pci_w32(rpc, address, RT3883_PCI_REG_CFGADDR); + ret = rt3883_pci_r32(rpc, RT3883_PCI_REG_CFGDATA); + spin_unlock_irqrestore(&rpc->lock, flags); + + return ret; +} + +static void rt3883_pci_write_cfg32(struct rt3883_pci_controller *rpc, + unsigned bus, unsigned slot, + unsigned func, unsigned reg, u32 val) +{ + unsigned long flags; + u32 address; + + address = rt3883_pci_get_cfgaddr(bus, slot, func, reg); + + spin_lock_irqsave(&rpc->lock, flags); + rt3883_pci_w32(rpc, address, RT3883_PCI_REG_CFGADDR); + rt3883_pci_w32(rpc, val, RT3883_PCI_REG_CFGDATA); + spin_unlock_irqrestore(&rpc->lock, flags); +} + +static void rt3883_pci_irq_handler(unsigned int irq, struct irq_desc *desc) +{ + struct rt3883_pci_controller *rpc; + u32 pending; + + rpc = irq_get_handler_data(irq); + + pending = rt3883_pci_r32(rpc, RT3883_PCI_REG_PCIINT) & + rt3883_pci_r32(rpc, RT3883_PCI_REG_PCIENA); + + if (!pending) { + spurious_interrupt(); + return; + } + + while (pending) { + unsigned bit = __ffs(pending); + + irq = irq_find_mapping(rpc->irq_domain, bit); + generic_handle_irq(irq); + + pending &= ~BIT(bit); + } +} + +static void rt3883_pci_irq_unmask(struct irq_data *d) +{ + struct rt3883_pci_controller *rpc; + u32 t; + + rpc = irq_data_get_irq_chip_data(d); + + t = rt3883_pci_r32(rpc, RT3883_PCI_REG_PCIENA); + rt3883_pci_w32(rpc, t | BIT(d->hwirq), RT3883_PCI_REG_PCIENA); + /* flush write */ + rt3883_pci_r32(rpc, RT3883_PCI_REG_PCIENA); +} + +static void rt3883_pci_irq_mask(struct irq_data *d) +{ + struct rt3883_pci_controller *rpc; + u32 t; + + rpc = irq_data_get_irq_chip_data(d); + + t = rt3883_pci_r32(rpc, RT3883_PCI_REG_PCIENA); + rt3883_pci_w32(rpc, t & ~BIT(d->hwirq), RT3883_PCI_REG_PCIENA); + /* flush write */ + rt3883_pci_r32(rpc, RT3883_PCI_REG_PCIENA); +} + +static struct irq_chip rt3883_pci_irq_chip = { + .name = "RT3883 PCI", + .irq_mask = rt3883_pci_irq_mask, + .irq_unmask = rt3883_pci_irq_unmask, + .irq_mask_ack = rt3883_pci_irq_mask, +}; + +static int rt3883_pci_irq_map(struct irq_domain *d, unsigned int irq, + irq_hw_number_t hw) +{ + irq_set_chip_and_handler(irq, &rt3883_pci_irq_chip, handle_level_irq); + irq_set_chip_data(irq, d->host_data); + + return 0; +} + +static const struct irq_domain_ops rt3883_pci_irq_domain_ops = { + .map = rt3883_pci_irq_map, + .xlate = irq_domain_xlate_onecell, +}; + +static int rt3883_pci_irq_init(struct device *dev, + struct rt3883_pci_controller *rpc) +{ + int irq; + + irq = irq_of_parse_and_map(rpc->intc_of_node, 0); + if (irq == 0) { + dev_err(dev, "%s has no IRQ", + of_node_full_name(rpc->intc_of_node)); + return -EINVAL; + } + + /* disable all interrupts */ + rt3883_pci_w32(rpc, 0, RT3883_PCI_REG_PCIENA); + + rpc->irq_domain = + irq_domain_add_linear(rpc->intc_of_node, RT3883_PCI_IRQ_COUNT, + &rt3883_pci_irq_domain_ops, + rpc); + if (!rpc->irq_domain) { + dev_err(dev, "unable to add IRQ domain\n"); + return -ENODEV; + } + + irq_set_handler_data(irq, rpc); + irq_set_chained_handler(irq, rt3883_pci_irq_handler); + + return 0; +} + +static int rt3883_pci_config_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + struct rt3883_pci_controller *rpc; + unsigned long flags; + u32 address; + u32 data; + + rpc = pci_bus_to_rt3883_controller(bus); + + if (!rpc->pcie_ready && bus->number == 1) + return PCIBIOS_DEVICE_NOT_FOUND; + + address = rt3883_pci_get_cfgaddr(bus->number, PCI_SLOT(devfn), + PCI_FUNC(devfn), where); + + spin_lock_irqsave(&rpc->lock, flags); + rt3883_pci_w32(rpc, address, RT3883_PCI_REG_CFGADDR); + data = rt3883_pci_r32(rpc, RT3883_PCI_REG_CFGDATA); + spin_unlock_irqrestore(&rpc->lock, flags); + + switch (size) { + case 1: + *val = (data >> ((where & 3) << 3)) & 0xff; + break; + case 2: + *val = (data >> ((where & 3) << 3)) & 0xffff; + break; + case 4: + *val = data; + break; + } + + return PCIBIOS_SUCCESSFUL; +} + +static int rt3883_pci_config_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + struct rt3883_pci_controller *rpc; + unsigned long flags; + u32 address; + u32 data; + + rpc = pci_bus_to_rt3883_controller(bus); + + if (!rpc->pcie_ready && bus->number == 1) + return PCIBIOS_DEVICE_NOT_FOUND; + + address = rt3883_pci_get_cfgaddr(bus->number, PCI_SLOT(devfn), + PCI_FUNC(devfn), where); + + spin_lock_irqsave(&rpc->lock, flags); + rt3883_pci_w32(rpc, address, RT3883_PCI_REG_CFGADDR); + data = rt3883_pci_r32(rpc, RT3883_PCI_REG_CFGDATA); + + switch (size) { + case 1: + data = (data & ~(0xff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + break; + case 2: + data = (data & ~(0xffff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + break; + case 4: + data = val; + break; + } + + rt3883_pci_w32(rpc, data, RT3883_PCI_REG_CFGDATA); + spin_unlock_irqrestore(&rpc->lock, flags); + + return PCIBIOS_SUCCESSFUL; +} + +static struct pci_ops rt3883_pci_ops = { + .read = rt3883_pci_config_read, + .write = rt3883_pci_config_write, +}; + +static void rt3883_pci_preinit(struct rt3883_pci_controller *rpc, unsigned mode) +{ + u32 syscfg1; + u32 rstctrl; + u32 clkcfg1; + u32 t; + + rstctrl = rt_sysc_r32(RT3883_SYSC_REG_RSTCTRL); + syscfg1 = rt_sysc_r32(RT3883_SYSC_REG_SYSCFG1); + clkcfg1 = rt_sysc_r32(RT3883_SYSC_REG_CLKCFG1); + + if (mode & RT3883_PCI_MODE_PCIE) { + rstctrl |= RT3883_RSTCTRL_PCIE; + rt_sysc_w32(rstctrl, RT3883_SYSC_REG_RSTCTRL); + + /* setup PCI PAD drive mode */ + syscfg1 &= ~(0x30); + syscfg1 |= (2 << 4); + rt_sysc_w32(syscfg1, RT3883_SYSC_REG_SYSCFG1); + + t = rt_sysc_r32(RT3883_SYSC_REG_PCIE_CLK_GEN0); + t &= ~BIT(31); + rt_sysc_w32(t, RT3883_SYSC_REG_PCIE_CLK_GEN0); + + t = rt_sysc_r32(RT3883_SYSC_REG_PCIE_CLK_GEN1); + t &= 0x80ffffff; + rt_sysc_w32(t, RT3883_SYSC_REG_PCIE_CLK_GEN1); + + t = rt_sysc_r32(RT3883_SYSC_REG_PCIE_CLK_GEN1); + t |= 0xa << 24; + rt_sysc_w32(t, RT3883_SYSC_REG_PCIE_CLK_GEN1); + + t = rt_sysc_r32(RT3883_SYSC_REG_PCIE_CLK_GEN0); + t |= BIT(31); + rt_sysc_w32(t, RT3883_SYSC_REG_PCIE_CLK_GEN0); + + msleep(50); + + rstctrl &= ~RT3883_RSTCTRL_PCIE; + rt_sysc_w32(rstctrl, RT3883_SYSC_REG_RSTCTRL); + } + + syscfg1 |= (RT3883_SYSCFG1_PCIE_RC_MODE | RT3883_SYSCFG1_PCI_HOST_MODE); + + clkcfg1 &= ~(RT3883_CLKCFG1_PCI_CLK_EN | RT3883_CLKCFG1_PCIE_CLK_EN); + + if (mode & RT3883_PCI_MODE_PCI) { + clkcfg1 |= RT3883_CLKCFG1_PCI_CLK_EN; + rstctrl &= ~RT3883_RSTCTRL_PCI; + } + + if (mode & RT3883_PCI_MODE_PCIE) { + clkcfg1 |= RT3883_CLKCFG1_PCIE_CLK_EN; + rstctrl &= ~RT3883_RSTCTRL_PCIE; + } + + rt_sysc_w32(syscfg1, RT3883_SYSC_REG_SYSCFG1); + rt_sysc_w32(rstctrl, RT3883_SYSC_REG_RSTCTRL); + rt_sysc_w32(clkcfg1, RT3883_SYSC_REG_CLKCFG1); + + msleep(500); + + /* + * setup the device number of the P2P bridge + * and de-assert the reset line + */ + t = (RT3883_P2P_BR_DEVNUM << RT3883_PCICFG_P2P_BR_DEVNUM_S); + rt3883_pci_w32(rpc, t, RT3883_PCI_REG_PCICFG); + + /* flush write */ + rt3883_pci_r32(rpc, RT3883_PCI_REG_PCICFG); + msleep(500); + + if (mode & RT3883_PCI_MODE_PCIE) { + msleep(500); + + t = rt3883_pci_r32(rpc, RT3883_PCI_REG_STATUS(1)); + + rpc->pcie_ready = t & BIT(0); + + if (!rpc->pcie_ready) { + /* reset the PCIe block */ + t = rt_sysc_r32(RT3883_SYSC_REG_RSTCTRL); + t |= RT3883_RSTCTRL_PCIE; + rt_sysc_w32(t, RT3883_SYSC_REG_RSTCTRL); + t &= ~RT3883_RSTCTRL_PCIE; + rt_sysc_w32(t, RT3883_SYSC_REG_RSTCTRL); + + /* turn off PCIe clock */ + t = rt_sysc_r32(RT3883_SYSC_REG_CLKCFG1); + t &= ~RT3883_CLKCFG1_PCIE_CLK_EN; + rt_sysc_w32(t, RT3883_SYSC_REG_CLKCFG1); + + t = rt_sysc_r32(RT3883_SYSC_REG_PCIE_CLK_GEN0); + t &= ~0xf000c080; + rt_sysc_w32(t, RT3883_SYSC_REG_PCIE_CLK_GEN0); + } + } + + /* enable PCI arbiter */ + rt3883_pci_w32(rpc, 0x79, RT3883_PCI_REG_ARBCTL); +} + +static int rt3883_pci_probe(struct platform_device *pdev) +{ + struct rt3883_pci_controller *rpc; + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct resource *res; + struct device_node *child; + u32 val; + int err; + int mode; + + rpc = devm_kzalloc(dev, sizeof(*rpc), GFP_KERNEL); + if (!rpc) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + rpc->base = devm_ioremap_resource(dev, res); + if (IS_ERR(rpc->base)) + return PTR_ERR(rpc->base); + + /* find the interrupt controller child node */ + for_each_child_of_node(np, child) { + if (of_get_property(child, "interrupt-controller", NULL) && + of_node_get(child)) { + rpc->intc_of_node = child; + break; + } + } + + if (!rpc->intc_of_node) { + dev_err(dev, "%s has no %s child node", + of_node_full_name(rpc->intc_of_node), + "interrupt controller"); + return -EINVAL; + } + + /* find the PCI host bridge child node */ + for_each_child_of_node(np, child) { + if (child->type && + of_node_cmp(child->type, "pci") == 0 && + of_node_get(child)) { + rpc->pci_controller.of_node = child; + break; + } + } + + if (!rpc->pci_controller.of_node) { + dev_err(dev, "%s has no %s child node", + of_node_full_name(rpc->intc_of_node), + "PCI host bridge"); + err = -EINVAL; + goto err_put_intc_node; + } + + mode = RT3883_PCI_MODE_NONE; + for_each_available_child_of_node(rpc->pci_controller.of_node, child) { + int devfn; + + if (!child->type || + of_node_cmp(child->type, "pci") != 0) + continue; + + devfn = of_pci_get_devfn(child); + if (devfn < 0) + continue; + + switch (PCI_SLOT(devfn)) { + case 1: + mode |= RT3883_PCI_MODE_PCIE; + break; + + case 17: + case 18: + mode |= RT3883_PCI_MODE_PCI; + break; + } + } + + if (mode == RT3883_PCI_MODE_NONE) { + dev_err(dev, "unable to determine PCI mode\n"); + err = -EINVAL; + goto err_put_hb_node; + } + + dev_info(dev, "mode:%s%s\n", + (mode & RT3883_PCI_MODE_PCI) ? " PCI" : "", + (mode & RT3883_PCI_MODE_PCIE) ? " PCIe" : ""); + + rt3883_pci_preinit(rpc, mode); + + rpc->pci_controller.pci_ops = &rt3883_pci_ops; + rpc->pci_controller.io_resource = &rpc->io_res; + rpc->pci_controller.mem_resource = &rpc->mem_res; + + /* Load PCI I/O and memory resources from DT */ + pci_load_of_ranges(&rpc->pci_controller, + rpc->pci_controller.of_node); + + rt3883_pci_w32(rpc, rpc->mem_res.start, RT3883_PCI_REG_MEMBASE); + rt3883_pci_w32(rpc, rpc->io_res.start, RT3883_PCI_REG_IOBASE); + + ioport_resource.start = rpc->io_res.start; + ioport_resource.end = rpc->io_res.end; + + /* PCI */ + rt3883_pci_w32(rpc, 0x03ff0000, RT3883_PCI_REG_BAR0SETUP(0)); + rt3883_pci_w32(rpc, RT3883_MEMORY_BASE, RT3883_PCI_REG_IMBASEBAR0(0)); + rt3883_pci_w32(rpc, 0x08021814, RT3883_PCI_REG_ID(0)); + rt3883_pci_w32(rpc, 0x00800001, RT3883_PCI_REG_CLASS(0)); + rt3883_pci_w32(rpc, 0x28801814, RT3883_PCI_REG_SUBID(0)); + + /* PCIe */ + rt3883_pci_w32(rpc, 0x03ff0000, RT3883_PCI_REG_BAR0SETUP(1)); + rt3883_pci_w32(rpc, RT3883_MEMORY_BASE, RT3883_PCI_REG_IMBASEBAR0(1)); + rt3883_pci_w32(rpc, 0x08021814, RT3883_PCI_REG_ID(1)); + rt3883_pci_w32(rpc, 0x06040001, RT3883_PCI_REG_CLASS(1)); + rt3883_pci_w32(rpc, 0x28801814, RT3883_PCI_REG_SUBID(1)); + + err = rt3883_pci_irq_init(dev, rpc); + if (err) + goto err_put_hb_node; + + /* PCIe */ + val = rt3883_pci_read_cfg32(rpc, 0, 0x01, 0, PCI_COMMAND); + val |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER; + rt3883_pci_write_cfg32(rpc, 0, 0x01, 0, PCI_COMMAND, val); + + /* PCI */ + val = rt3883_pci_read_cfg32(rpc, 0, 0x00, 0, PCI_COMMAND); + val |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER; + rt3883_pci_write_cfg32(rpc, 0, 0x00, 0, PCI_COMMAND, val); + + if (mode == RT3883_PCI_MODE_PCIE) { + rt3883_pci_w32(rpc, 0x03ff0001, RT3883_PCI_REG_BAR0SETUP(0)); + rt3883_pci_w32(rpc, 0x03ff0001, RT3883_PCI_REG_BAR0SETUP(1)); + + rt3883_pci_write_cfg32(rpc, 0, RT3883_P2P_BR_DEVNUM, 0, + PCI_BASE_ADDRESS_0, + RT3883_MEMORY_BASE); + /* flush write */ + rt3883_pci_read_cfg32(rpc, 0, RT3883_P2P_BR_DEVNUM, 0, + PCI_BASE_ADDRESS_0); + } else { + rt3883_pci_write_cfg32(rpc, 0, RT3883_P2P_BR_DEVNUM, 0, + PCI_IO_BASE, 0x00000101); + } + + register_pci_controller(&rpc->pci_controller); + + return 0; + +err_put_hb_node: + of_node_put(rpc->pci_controller.of_node); +err_put_intc_node: + of_node_put(rpc->intc_of_node); + return err; +} + +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + return of_irq_parse_and_map_pci(dev, slot, pin); +} + +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} + +static const struct of_device_id rt3883_pci_ids[] = { + { .compatible = "ralink,rt3883-pci" }, + {}, +}; +MODULE_DEVICE_TABLE(of, rt3883_pci_ids); + +static struct platform_driver rt3883_pci_driver = { + .probe = rt3883_pci_probe, + .driver = { + .name = "rt3883-pci", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(rt3883_pci_ids), + }, +}; + +static int __init rt3883_pci_init(void) +{ + return platform_driver_register(&rt3883_pci_driver); +} + +postcore_initcall(rt3883_pci_init); diff --git a/arch/mips/pci/pci-sb1250.c b/arch/mips/pci/pci-sb1250.c index 7cca3bde59b..fc634aeda4a 100644 --- a/arch/mips/pci/pci-sb1250.c +++ b/arch/mips/pci/pci-sb1250.c @@ -30,7 +30,6 @@ * kernel mapped memory. Hopefully neither of these should be a huge * problem. */ -#include <linux/config.h> #include <linux/types.h> #include <linux/pci.h> #include <linux/kernel.h> @@ -38,6 +37,7 @@ #include <linux/mm.h> #include <linux/console.h> #include <linux/tty.h> +#include <linux/vt.h> #include <asm/io.h> @@ -50,16 +50,16 @@ * Macros for calculating offsets into config space given a device * structure or dev/fun/reg */ -#define CFGOFFSET(bus,devfn,where) (((bus)<<16) + ((devfn)<<8) + (where)) -#define CFGADDR(bus,devfn,where) CFGOFFSET((bus)->number,(devfn),where) +#define CFGOFFSET(bus, devfn, where) (((bus)<<16) + ((devfn)<<8) + (where)) +#define CFGADDR(bus, devfn, where) CFGOFFSET((bus)->number, (devfn), where) static void *cfg_space; -#define PCI_BUS_ENABLED 1 -#define LDT_BUS_ENABLED 2 -#define PCI_DEVICE_MODE 4 +#define PCI_BUS_ENABLED 1 +#define LDT_BUS_ENABLED 2 +#define PCI_DEVICE_MODE 4 -static int sb1250_bus_status = 0; +static int sb1250_bus_status; #define PCI_BRIDGE_DEVICE 0 #define LDT_BRIDGE_DEVICE 1 @@ -85,7 +85,7 @@ static inline void WRITECFG32(u32 addr, u32 data) *(u32 *) (cfg_space + (addr & ~3)) = data; } -int pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { return dev->irq; } @@ -208,12 +208,12 @@ struct pci_controller sb1250_controller = { static int __init sb1250_pcibios_init(void) { + void __iomem *io_map_base; uint32_t cmdreg; uint64_t reg; - extern int pci_probe_only; /* CFE will assign PCI resources */ - pci_probe_only = 1; + pci_set_flags(PCI_PROBE_ONLY); /* Avoid ISA compat ranges. */ PCIBIOS_MIN_IO = 0x00008000UL; @@ -229,7 +229,7 @@ static int __init sb1250_pcibios_init(void) /* * See if the PCI bus has been configured by the firmware. */ - reg = *((volatile uint64_t *) IOADDR(A_SCD_SYSTEM_CFG)); + reg = __raw_readq(IOADDR(A_SCD_SYSTEM_CFG)); if (!(reg & M_SYS_PCI_HOST)) { sb1250_bus_status |= PCI_DEVICE_MODE; } else { @@ -239,7 +239,7 @@ static int __init sb1250_pcibios_init(void) PCI_COMMAND)); if (!(cmdreg & PCI_COMMAND_MASTER)) { printk - ("PCI: Skipping PCI probe. Bus is not initialized.\n"); + ("PCI: Skipping PCI probe. Bus is not initialized.\n"); iounmap(cfg_space); return 0; } @@ -254,11 +254,9 @@ static int __init sb1250_pcibios_init(void) * works correctly with most of Linux's drivers. * XXX ehs: Should this happen in PCI Device mode? */ - - set_io_port_base((unsigned long) - ioremap(A_PHYS_LDTPCI_IO_MATCH_BYTES, 65536)); - isa_slot_offset = (unsigned long) - ioremap(A_PHYS_LDTPCI_IO_MATCH_BYTES_32, 1024 * 1024); + io_map_base = ioremap(A_PHYS_LDTPCI_IO_MATCH_BYTES, 1024 * 1024); + sb1250_controller.io_map_base = (unsigned long)io_map_base; + set_io_port_base((unsigned long)io_map_base); #ifdef CONFIG_SIBYTE_HAS_LDT /* @@ -285,7 +283,9 @@ static int __init sb1250_pcibios_init(void) register_pci_controller(&sb1250_controller); #ifdef CONFIG_VGA_CONSOLE - take_over_console(&vga_con, 0, MAX_NR_CONSOLES - 1, 1); + console_lock(); + do_take_over_console(&vga_con, 0, MAX_NR_CONSOLES - 1, 1); + console_unlock(); #endif return 0; } diff --git a/arch/mips/pci/pci-tx4927.c b/arch/mips/pci/pci-tx4927.c new file mode 100644 index 00000000000..a032ae0a533 --- /dev/null +++ b/arch/mips/pci/pci-tx4927.c @@ -0,0 +1,91 @@ +/* + * Based on linux/arch/mips/txx9/rbtx4938/setup.c, + * and RBTX49xx patch from CELF patch archive. + * + * Copyright 2001, 2003-2005 MontaVista Software Inc. + * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) + * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007 + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <asm/txx9/generic.h> +#include <asm/txx9/tx4927.h> + +int __init tx4927_report_pciclk(void) +{ + int pciclk = 0; + + printk(KERN_INFO "PCIC --%s PCICLK:", + (__raw_readq(&tx4927_ccfgptr->ccfg) & TX4927_CCFG_PCI66) ? + " PCI66" : ""); + if (__raw_readq(&tx4927_ccfgptr->pcfg) & TX4927_PCFG_PCICLKEN_ALL) { + u64 ccfg = __raw_readq(&tx4927_ccfgptr->ccfg); + switch ((unsigned long)ccfg & + TX4927_CCFG_PCIDIVMODE_MASK) { + case TX4927_CCFG_PCIDIVMODE_2_5: + pciclk = txx9_cpu_clock * 2 / 5; break; + case TX4927_CCFG_PCIDIVMODE_3: + pciclk = txx9_cpu_clock / 3; break; + case TX4927_CCFG_PCIDIVMODE_5: + pciclk = txx9_cpu_clock / 5; break; + case TX4927_CCFG_PCIDIVMODE_6: + pciclk = txx9_cpu_clock / 6; break; + } + printk("Internal(%u.%uMHz)", + (pciclk + 50000) / 1000000, + ((pciclk + 50000) / 100000) % 10); + } else { + printk("External"); + pciclk = -1; + } + printk("\n"); + return pciclk; +} + +int __init tx4927_pciclk66_setup(void) +{ + int pciclk; + + /* Assert M66EN */ + tx4927_ccfg_set(TX4927_CCFG_PCI66); + /* Double PCICLK (if possible) */ + if (__raw_readq(&tx4927_ccfgptr->pcfg) & TX4927_PCFG_PCICLKEN_ALL) { + unsigned int pcidivmode = 0; + u64 ccfg = __raw_readq(&tx4927_ccfgptr->ccfg); + pcidivmode = (unsigned long)ccfg & + TX4927_CCFG_PCIDIVMODE_MASK; + switch (pcidivmode) { + case TX4927_CCFG_PCIDIVMODE_5: + case TX4927_CCFG_PCIDIVMODE_2_5: + pcidivmode = TX4927_CCFG_PCIDIVMODE_2_5; + pciclk = txx9_cpu_clock * 2 / 5; + break; + case TX4927_CCFG_PCIDIVMODE_6: + case TX4927_CCFG_PCIDIVMODE_3: + default: + pcidivmode = TX4927_CCFG_PCIDIVMODE_3; + pciclk = txx9_cpu_clock / 3; + } + tx4927_ccfg_change(TX4927_CCFG_PCIDIVMODE_MASK, + pcidivmode); + printk(KERN_DEBUG "PCICLK: ccfg:%08lx\n", + (unsigned long)__raw_readq(&tx4927_ccfgptr->ccfg)); + } else + pciclk = -1; + return pciclk; +} + +void __init tx4927_setup_pcierr_irq(void) +{ + if (request_irq(TXX9_IRQ_BASE + TX4927_IR_PCIERR, + tx4927_pcierr_interrupt, + 0, "PCI error", + (void *)TX4927_PCIC_REG)) + printk(KERN_WARNING "Failed to request irq for PCIERR\n"); +} diff --git a/arch/mips/pci/pci-tx4938.c b/arch/mips/pci/pci-tx4938.c new file mode 100644 index 00000000000..141bba56248 --- /dev/null +++ b/arch/mips/pci/pci-tx4938.c @@ -0,0 +1,142 @@ +/* + * Based on linux/arch/mips/txx9/rbtx4938/setup.c, + * and RBTX49xx patch from CELF patch archive. + * + * Copyright 2001, 2003-2005 MontaVista Software Inc. + * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) + * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007 + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <asm/txx9/generic.h> +#include <asm/txx9/tx4938.h> + +int __init tx4938_report_pciclk(void) +{ + int pciclk = 0; + + printk(KERN_INFO "PCIC --%s PCICLK:", + (__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCI66) ? + " PCI66" : ""); + if (__raw_readq(&tx4938_ccfgptr->pcfg) & TX4938_PCFG_PCICLKEN_ALL) { + u64 ccfg = __raw_readq(&tx4938_ccfgptr->ccfg); + switch ((unsigned long)ccfg & + TX4938_CCFG_PCIDIVMODE_MASK) { + case TX4938_CCFG_PCIDIVMODE_4: + pciclk = txx9_cpu_clock / 4; break; + case TX4938_CCFG_PCIDIVMODE_4_5: + pciclk = txx9_cpu_clock * 2 / 9; break; + case TX4938_CCFG_PCIDIVMODE_5: + pciclk = txx9_cpu_clock / 5; break; + case TX4938_CCFG_PCIDIVMODE_5_5: + pciclk = txx9_cpu_clock * 2 / 11; break; + case TX4938_CCFG_PCIDIVMODE_8: + pciclk = txx9_cpu_clock / 8; break; + case TX4938_CCFG_PCIDIVMODE_9: + pciclk = txx9_cpu_clock / 9; break; + case TX4938_CCFG_PCIDIVMODE_10: + pciclk = txx9_cpu_clock / 10; break; + case TX4938_CCFG_PCIDIVMODE_11: + pciclk = txx9_cpu_clock / 11; break; + } + printk("Internal(%u.%uMHz)", + (pciclk + 50000) / 1000000, + ((pciclk + 50000) / 100000) % 10); + } else { + printk("External"); + pciclk = -1; + } + printk("\n"); + return pciclk; +} + +void __init tx4938_report_pci1clk(void) +{ + __u64 ccfg = __raw_readq(&tx4938_ccfgptr->ccfg); + unsigned int pciclk = + txx9_gbus_clock / ((ccfg & TX4938_CCFG_PCI1DMD) ? 4 : 2); + + printk(KERN_INFO "PCIC1 -- %sPCICLK:%u.%uMHz\n", + (ccfg & TX4938_CCFG_PCI1_66) ? "PCI66 " : "", + (pciclk + 50000) / 1000000, + ((pciclk + 50000) / 100000) % 10); +} + +int __init tx4938_pciclk66_setup(void) +{ + int pciclk; + + /* Assert M66EN */ + tx4938_ccfg_set(TX4938_CCFG_PCI66); + /* Double PCICLK (if possible) */ + if (__raw_readq(&tx4938_ccfgptr->pcfg) & TX4938_PCFG_PCICLKEN_ALL) { + unsigned int pcidivmode = 0; + u64 ccfg = __raw_readq(&tx4938_ccfgptr->ccfg); + pcidivmode = (unsigned long)ccfg & + TX4938_CCFG_PCIDIVMODE_MASK; + switch (pcidivmode) { + case TX4938_CCFG_PCIDIVMODE_8: + case TX4938_CCFG_PCIDIVMODE_4: + pcidivmode = TX4938_CCFG_PCIDIVMODE_4; + pciclk = txx9_cpu_clock / 4; + break; + case TX4938_CCFG_PCIDIVMODE_9: + case TX4938_CCFG_PCIDIVMODE_4_5: + pcidivmode = TX4938_CCFG_PCIDIVMODE_4_5; + pciclk = txx9_cpu_clock * 2 / 9; + break; + case TX4938_CCFG_PCIDIVMODE_10: + case TX4938_CCFG_PCIDIVMODE_5: + pcidivmode = TX4938_CCFG_PCIDIVMODE_5; + pciclk = txx9_cpu_clock / 5; + break; + case TX4938_CCFG_PCIDIVMODE_11: + case TX4938_CCFG_PCIDIVMODE_5_5: + default: + pcidivmode = TX4938_CCFG_PCIDIVMODE_5_5; + pciclk = txx9_cpu_clock * 2 / 11; + break; + } + tx4938_ccfg_change(TX4938_CCFG_PCIDIVMODE_MASK, + pcidivmode); + printk(KERN_DEBUG "PCICLK: ccfg:%08lx\n", + (unsigned long)__raw_readq(&tx4938_ccfgptr->ccfg)); + } else + pciclk = -1; + return pciclk; +} + +int __init tx4938_pcic1_map_irq(const struct pci_dev *dev, u8 slot) +{ + if (get_tx4927_pcicptr(dev->bus->sysdata) == tx4938_pcic1ptr) { + switch (slot) { + case TX4927_PCIC_IDSEL_AD_TO_SLOT(31): + if (__raw_readq(&tx4938_ccfgptr->pcfg) & + TX4938_PCFG_ETH0_SEL) + return TXX9_IRQ_BASE + TX4938_IR_ETH0; + break; + case TX4927_PCIC_IDSEL_AD_TO_SLOT(30): + if (__raw_readq(&tx4938_ccfgptr->pcfg) & + TX4938_PCFG_ETH1_SEL) + return TXX9_IRQ_BASE + TX4938_IR_ETH1; + break; + } + return 0; + } + return -1; +} + +void __init tx4938_setup_pcierr_irq(void) +{ + if (request_irq(TXX9_IRQ_BASE + TX4938_IR_PCIERR, + tx4927_pcierr_interrupt, + 0, "PCI error", + (void *)TX4927_PCIC_REG)) + printk(KERN_WARNING "Failed to request irq for PCIERR\n"); +} diff --git a/arch/mips/pci/pci-tx4939.c b/arch/mips/pci/pci-tx4939.c new file mode 100644 index 00000000000..c10fbf2a19d --- /dev/null +++ b/arch/mips/pci/pci-tx4939.c @@ -0,0 +1,107 @@ +/* + * Based on linux/arch/mips/txx9/rbtx4939/setup.c, + * and RBTX49xx patch from CELF patch archive. + * + * Copyright 2001, 2003-2005 MontaVista Software Inc. + * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) + * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007 + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <asm/txx9/generic.h> +#include <asm/txx9/tx4939.h> + +int __init tx4939_report_pciclk(void) +{ + int pciclk = 0; + + pr_info("PCIC --%s PCICLK:", + (__raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCI66) ? + " PCI66" : ""); + if (__raw_readq(&tx4939_ccfgptr->pcfg) & TX4939_PCFG_PCICLKEN_ALL) { + pciclk = txx9_master_clock * 20 / 6; + if (!(__raw_readq(&tx4939_ccfgptr->ccfg) & TX4939_CCFG_PCI66)) + pciclk /= 2; + printk(KERN_CONT "Internal(%u.%uMHz)", + (pciclk + 50000) / 1000000, + ((pciclk + 50000) / 100000) % 10); + } else { + printk(KERN_CONT "External"); + pciclk = -1; + } + printk(KERN_CONT "\n"); + return pciclk; +} + +void __init tx4939_report_pci1clk(void) +{ + unsigned int pciclk = txx9_master_clock * 20 / 6; + + pr_info("PCIC1 -- PCICLK:%u.%uMHz\n", + (pciclk + 50000) / 1000000, + ((pciclk + 50000) / 100000) % 10); +} + +int __init tx4939_pcic1_map_irq(const struct pci_dev *dev, u8 slot) +{ + if (get_tx4927_pcicptr(dev->bus->sysdata) == tx4939_pcic1ptr) { + switch (slot) { + case TX4927_PCIC_IDSEL_AD_TO_SLOT(31): + if (__raw_readq(&tx4939_ccfgptr->pcfg) & + TX4939_PCFG_ET0MODE) + return TXX9_IRQ_BASE + TX4939_IR_ETH(0); + break; + case TX4927_PCIC_IDSEL_AD_TO_SLOT(30): + if (__raw_readq(&tx4939_ccfgptr->pcfg) & + TX4939_PCFG_ET1MODE) + return TXX9_IRQ_BASE + TX4939_IR_ETH(1); + break; + } + return 0; + } + return -1; +} + +int __init tx4939_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + int irq = tx4939_pcic1_map_irq(dev, slot); + + if (irq >= 0) + return irq; + irq = pin; + /* IRQ rotation */ + irq--; /* 0-3 */ + irq = (irq + 33 - slot) % 4; + irq++; /* 1-4 */ + + switch (irq) { + case 1: + irq = TXX9_IRQ_BASE + TX4939_IR_INTA; + break; + case 2: + irq = TXX9_IRQ_BASE + TX4939_IR_INTB; + break; + case 3: + irq = TXX9_IRQ_BASE + TX4939_IR_INTC; + break; + case 4: + irq = TXX9_IRQ_BASE + TX4939_IR_INTD; + break; + } + return irq; +} + +void __init tx4939_setup_pcierr_irq(void) +{ + if (request_irq(TXX9_IRQ_BASE + TX4939_IR_PCIERR, + tx4927_pcierr_interrupt, + 0, "PCI error", + (void *)TX4939_PCIC_REG)) + pr_warning("Failed to request irq for PCIERR\n"); +} diff --git a/arch/mips/pci/pci-virtio-guest.c b/arch/mips/pci/pci-virtio-guest.c new file mode 100644 index 00000000000..40a078bc461 --- /dev/null +++ b/arch/mips/pci/pci-virtio-guest.c @@ -0,0 +1,131 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2013 Cavium, Inc. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/pci.h> + +#include <uapi/asm/bitfield.h> +#include <asm/byteorder.h> +#include <asm/io.h> + +#define PCI_CONFIG_ADDRESS 0xcf8 +#define PCI_CONFIG_DATA 0xcfc + +union pci_config_address { + struct { + __BITFIELD_FIELD(unsigned enable_bit : 1, /* 31 */ + __BITFIELD_FIELD(unsigned reserved : 7, /* 30 .. 24 */ + __BITFIELD_FIELD(unsigned bus_number : 8, /* 23 .. 16 */ + __BITFIELD_FIELD(unsigned devfn_number : 8, /* 15 .. 8 */ + __BITFIELD_FIELD(unsigned register_number : 8, /* 7 .. 0 */ + ))))); + }; + u32 w; +}; + +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} + +int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + return ((pin + slot) % 4)+ MIPS_IRQ_PCIA; +} + +static void pci_virtio_guest_write_config_addr(struct pci_bus *bus, + unsigned int devfn, int reg) +{ + union pci_config_address pca = { .w = 0 }; + + pca.register_number = reg; + pca.devfn_number = devfn; + pca.bus_number = bus->number; + pca.enable_bit = 1; + + outl(pca.w, PCI_CONFIG_ADDRESS); +} + +static int pci_virtio_guest_write_config(struct pci_bus *bus, + unsigned int devfn, int reg, int size, u32 val) +{ + pci_virtio_guest_write_config_addr(bus, devfn, reg); + + switch (size) { + case 1: + outb(val, PCI_CONFIG_DATA + (reg & 3)); + break; + case 2: + outw(val, PCI_CONFIG_DATA + (reg & 2)); + break; + case 4: + outl(val, PCI_CONFIG_DATA); + break; + } + + return PCIBIOS_SUCCESSFUL; +} + +static int pci_virtio_guest_read_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 *val) +{ + pci_virtio_guest_write_config_addr(bus, devfn, reg); + + switch (size) { + case 1: + *val = inb(PCI_CONFIG_DATA + (reg & 3)); + break; + case 2: + *val = inw(PCI_CONFIG_DATA + (reg & 2)); + break; + case 4: + *val = inl(PCI_CONFIG_DATA); + break; + } + return PCIBIOS_SUCCESSFUL; +} + +static struct pci_ops pci_virtio_guest_ops = { + .read = pci_virtio_guest_read_config, + .write = pci_virtio_guest_write_config, +}; + +static struct resource pci_virtio_guest_mem_resource = { + .name = "Virtio MEM", + .flags = IORESOURCE_MEM, + .start = 0x10000000, + .end = 0x1dffffff +}; + +static struct resource pci_virtio_guest_io_resource = { + .name = "Virtio IO", + .flags = IORESOURCE_IO, + .start = 0, + .end = 0xffff +}; + +static struct pci_controller pci_virtio_guest_controller = { + .pci_ops = &pci_virtio_guest_ops, + .mem_resource = &pci_virtio_guest_mem_resource, + .io_resource = &pci_virtio_guest_io_resource, +}; + +static int __init pci_virtio_guest_setup(void) +{ + pr_err("pci_virtio_guest_setup\n"); + + /* Virtio comes pre-assigned */ + pci_set_flags(PCI_PROBE_ONLY); + + pci_virtio_guest_controller.io_map_base = mips_io_port_base; + register_pci_controller(&pci_virtio_guest_controller); + return 0; +} +arch_initcall(pci_virtio_guest_setup); diff --git a/arch/mips/pci/pci-vr41xx.c b/arch/mips/pci/pci-vr41xx.c index 9885fa40360..157c7715b7c 100644 --- a/arch/mips/pci/pci-vr41xx.c +++ b/arch/mips/pci/pci-vr41xx.c @@ -2,8 +2,8 @@ * pci-vr41xx.c, PCI Control Unit routines for the NEC VR4100 series. * * Copyright (C) 2001-2003 MontaVista Software Inc. - * Author: Yoichi Yuasa <yyuasa@mvista.com or source@mvista.com> - * Copyright (C) 2004-2005 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * Author: Yoichi Yuasa <source@mvista.com> + * Copyright (C) 2004-2008 Yoichi Yuasa <yuasa@linux-mips.org> * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) * * This program is free software; you can redistribute it and/or modify @@ -22,7 +22,7 @@ */ /* * Changes: - * MontaVista Software Inc. <yyuasa@mvista.com> or <source@mvista.com> + * MontaVista Software Inc. <source@mvista.com> * - New creation, NEC VR4122 and VR4131 are supported. */ #include <linux/init.h> @@ -69,17 +69,17 @@ static struct pci_target_address_window pci_target_window1 = { }; static struct resource pci_mem_resource = { - .name = "PCI Memory resources", - .start = PCI_MEM_RESOURCE_START, - .end = PCI_MEM_RESOURCE_END, - .flags = IORESOURCE_MEM, + .name = "PCI Memory resources", + .start = PCI_MEM_RESOURCE_START, + .end = PCI_MEM_RESOURCE_END, + .flags = IORESOURCE_MEM, }; static struct resource pci_io_resource = { - .name = "PCI I/O resources", - .start = PCI_IO_RESOURCE_START, - .end = PCI_IO_RESOURCE_END, - .flags = IORESOURCE_IO, + .name = "PCI I/O resources", + .start = PCI_IO_RESOURCE_START, + .end = PCI_IO_RESOURCE_END, + .flags = IORESOURCE_IO, }; static struct pci_controller_unit_setup vr41xx_pci_controller_unit_setup = { @@ -97,7 +97,7 @@ static struct pci_controller_unit_setup vr41xx_pci_controller_unit_setup = { }; static struct pci_controller vr41xx_pci_controller = { - .pci_ops = &vr41xx_pci_ops, + .pci_ops = &vr41xx_pci_ops, .mem_resource = &pci_mem_resource, .io_resource = &pci_io_resource, }; @@ -148,12 +148,13 @@ static int __init vr41xx_pciu_init(void) else if ((vtclock / 2) < pci_clock_max) pciu_write(PCICLKSELREG, HALF_VTCLOCK); else if (current_cpu_data.processor_id >= PRID_VR4131_REV2_1 && - (vtclock / 3) < pci_clock_max) + (vtclock / 3) < pci_clock_max) pciu_write(PCICLKSELREG, ONE_THIRD_VTCLOCK); else if ((vtclock / 4) < pci_clock_max) pciu_write(PCICLKSELREG, QUARTER_VTCLOCK); else { printk(KERN_ERR "PCI Clock is over 33MHz.\n"); + iounmap(pciu_base); return -EINVAL; } @@ -228,7 +229,7 @@ static int __init vr41xx_pciu_init(void) else pciu_write(PCIEXACCREG, 0); - if (current_cpu_data.cputype == CPU_VR4122) + if (current_cpu_type() == CPU_VR4122) pciu_write(PCITRDYVREG, TRDYV(setup->wait_time_limit_from_irdy_to_trdy)); pciu_write(LATTIMEREG, MLTIM(setup->master_latency_timer)); @@ -280,7 +281,7 @@ static int __init vr41xx_pciu_init(void) pciu_write(PCIAPCNTREG, val); pciu_write(COMMANDREG, PCI_COMMAND_IO | PCI_COMMAND_MEMORY | - PCI_COMMAND_MASTER | PCI_COMMAND_PARITY | + PCI_COMMAND_MASTER | PCI_COMMAND_PARITY | PCI_COMMAND_SERR); /* Clear bus error */ @@ -299,6 +300,18 @@ static int __init vr41xx_pciu_init(void) ioport_resource.end = IO_PORT_RESOURCE_END; } + if (setup->master_io) { + void __iomem *io_map_base; + struct resource *res = vr41xx_pci_controller.io_resource; + master = setup->master_io; + io_map_base = ioremap(master->bus_base_address, + resource_size(res)); + if (!io_map_base) + return -EBUSY; + + vr41xx_pci_controller.io_map_base = (unsigned long)io_map_base; + } + register_pci_controller(&vr41xx_pci_controller); return 0; diff --git a/arch/mips/pci/pci-vr41xx.h b/arch/mips/pci/pci-vr41xx.h index 8a35e32b837..e6b4a1b969f 100644 --- a/arch/mips/pci/pci-vr41xx.h +++ b/arch/mips/pci/pci-vr41xx.h @@ -1,9 +1,9 @@ /* * pci-vr41xx.h, Include file for PCI Control Unit of the NEC VR4100 series. * - * Copyright (C) 2002 MontaVista Software Inc. - * Author: Yoichi Yuasa <yyuasa@mvista.com or source@mvista.com> - * Copyright (C) 2004-2005 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * Copyright (C) 2002 MontaVista Software Inc. + * Author: Yoichi Yuasa <source@mvista.com> + * Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@linux-mips.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by diff --git a/arch/mips/pci/pci-xlp.c b/arch/mips/pci/pci-xlp.c new file mode 100644 index 00000000000..7babf01600c --- /dev/null +++ b/arch/mips/pci/pci-xlp.c @@ -0,0 +1,332 @@ +/* + * Copyright (c) 2003-2012 Broadcom Corporation + * All Rights Reserved + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the Broadcom + * license below: + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY BROADCOM ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/msi.h> +#include <linux/mm.h> +#include <linux/irq.h> +#include <linux/irqdesc.h> +#include <linux/console.h> + +#include <asm/io.h> + +#include <asm/netlogic/interrupt.h> +#include <asm/netlogic/haldefs.h> +#include <asm/netlogic/common.h> +#include <asm/netlogic/mips-extns.h> + +#include <asm/netlogic/xlp-hal/iomap.h> +#include <asm/netlogic/xlp-hal/xlp.h> +#include <asm/netlogic/xlp-hal/pic.h> +#include <asm/netlogic/xlp-hal/pcibus.h> +#include <asm/netlogic/xlp-hal/bridge.h> + +static void *pci_config_base; + +#define pci_cfg_addr(bus, devfn, off) (((bus) << 20) | ((devfn) << 12) | (off)) + +/* PCI ops */ +static inline u32 pci_cfg_read_32bit(struct pci_bus *bus, unsigned int devfn, + int where) +{ + u32 data; + u32 *cfgaddr; + + where &= ~3; + if (cpu_is_xlp9xx()) { + /* be very careful on SoC buses */ + if (bus->number == 0) { + /* Scan only existing nodes - uboot bug? */ + if (PCI_SLOT(devfn) != 0 || + !nlm_node_present(PCI_FUNC(devfn))) + return 0xffffffff; + } else if (bus->parent->number == 0) { /* SoC bus */ + if (PCI_SLOT(devfn) == 0) /* b.0.0 hangs */ + return 0xffffffff; + if (devfn == 44) /* b.5.4 hangs */ + return 0xffffffff; + } + } else if (bus->number == 0 && PCI_SLOT(devfn) == 1 && where == 0x954) { + return 0xffffffff; + } + cfgaddr = (u32 *)(pci_config_base + + pci_cfg_addr(bus->number, devfn, where)); + data = *cfgaddr; + return data; +} + +static inline void pci_cfg_write_32bit(struct pci_bus *bus, unsigned int devfn, + int where, u32 data) +{ + u32 *cfgaddr; + + cfgaddr = (u32 *)(pci_config_base + + pci_cfg_addr(bus->number, devfn, where & ~3)); + *cfgaddr = data; +} + +static int nlm_pcibios_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + u32 data; + + if ((size == 2) && (where & 1)) + return PCIBIOS_BAD_REGISTER_NUMBER; + else if ((size == 4) && (where & 3)) + return PCIBIOS_BAD_REGISTER_NUMBER; + + data = pci_cfg_read_32bit(bus, devfn, where); + + if (size == 1) + *val = (data >> ((where & 3) << 3)) & 0xff; + else if (size == 2) + *val = (data >> ((where & 3) << 3)) & 0xffff; + else + *val = data; + + return PCIBIOS_SUCCESSFUL; +} + + +static int nlm_pcibios_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + u32 data; + + if ((size == 2) && (where & 1)) + return PCIBIOS_BAD_REGISTER_NUMBER; + else if ((size == 4) && (where & 3)) + return PCIBIOS_BAD_REGISTER_NUMBER; + + data = pci_cfg_read_32bit(bus, devfn, where); + + if (size == 1) + data = (data & ~(0xff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + else if (size == 2) + data = (data & ~(0xffff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + else + data = val; + + pci_cfg_write_32bit(bus, devfn, where, data); + + return PCIBIOS_SUCCESSFUL; +} + +struct pci_ops nlm_pci_ops = { + .read = nlm_pcibios_read, + .write = nlm_pcibios_write +}; + +static struct resource nlm_pci_mem_resource = { + .name = "XLP PCI MEM", + .start = 0xd0000000UL, /* 256MB PCI mem @ 0xd000_0000 */ + .end = 0xdfffffffUL, + .flags = IORESOURCE_MEM, +}; + +static struct resource nlm_pci_io_resource = { + .name = "XLP IO MEM", + .start = 0x14000000UL, /* 64MB PCI IO @ 0x1000_0000 */ + .end = 0x17ffffffUL, + .flags = IORESOURCE_IO, +}; + +struct pci_controller nlm_pci_controller = { + .index = 0, + .pci_ops = &nlm_pci_ops, + .mem_resource = &nlm_pci_mem_resource, + .mem_offset = 0x00000000UL, + .io_resource = &nlm_pci_io_resource, + .io_offset = 0x00000000UL, +}; + +struct pci_dev *xlp_get_pcie_link(const struct pci_dev *dev) +{ + struct pci_bus *bus, *p; + + bus = dev->bus; + + if (cpu_is_xlp9xx()) { + /* find bus with grand parent number == 0 */ + for (p = bus->parent; p && p->parent && p->parent->number != 0; + p = p->parent) + bus = p; + return (p && p->parent) ? bus->self : NULL; + } else { + /* Find the bridge on bus 0 */ + for (p = bus->parent; p && p->number != 0; p = p->parent) + bus = p; + + return p ? bus->self : NULL; + } +} + +int xlp_socdev_to_node(const struct pci_dev *lnkdev) +{ + if (cpu_is_xlp9xx()) + return PCI_FUNC(lnkdev->bus->self->devfn); + else + return PCI_SLOT(lnkdev->devfn) / 8; +} + +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + struct pci_dev *lnkdev; + int lnkfunc, node; + + /* + * For XLP PCIe, there is an IRQ per Link, find out which + * link the device is on to assign interrupts + */ + lnkdev = xlp_get_pcie_link(dev); + if (lnkdev == NULL) + return 0; + + lnkfunc = PCI_FUNC(lnkdev->devfn); + node = xlp_socdev_to_node(lnkdev); + + return nlm_irq_to_xirq(node, PIC_PCIE_LINK_LEGACY_IRQ(lnkfunc)); +} + +/* Do platform specific device initialization at pci_enable_device() time */ +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} + +/* + * If big-endian, enable hardware byteswap on the PCIe bridges. + * This will make both the SoC and PCIe devices behave consistently with + * readl/writel. + */ +#ifdef __BIG_ENDIAN +static void xlp_config_pci_bswap(int node, int link) +{ + uint64_t nbubase, lnkbase; + u32 reg; + + nbubase = nlm_get_bridge_regbase(node); + lnkbase = nlm_get_pcie_base(node, link); + + /* + * Enable byte swap in hardware. Program each link's PCIe SWAP regions + * from the link's address ranges. + */ + if (cpu_is_xlp9xx()) { + reg = nlm_read_bridge_reg(nbubase, + BRIDGE_9XX_PCIEMEM_BASE0 + link); + nlm_write_pci_reg(lnkbase, PCIE_9XX_BYTE_SWAP_MEM_BASE, reg); + + reg = nlm_read_bridge_reg(nbubase, + BRIDGE_9XX_PCIEMEM_LIMIT0 + link); + nlm_write_pci_reg(lnkbase, + PCIE_9XX_BYTE_SWAP_MEM_LIM, reg | 0xfff); + + reg = nlm_read_bridge_reg(nbubase, + BRIDGE_9XX_PCIEIO_BASE0 + link); + nlm_write_pci_reg(lnkbase, PCIE_9XX_BYTE_SWAP_IO_BASE, reg); + + reg = nlm_read_bridge_reg(nbubase, + BRIDGE_9XX_PCIEIO_LIMIT0 + link); + nlm_write_pci_reg(lnkbase, + PCIE_9XX_BYTE_SWAP_IO_LIM, reg | 0xfff); + } else { + reg = nlm_read_bridge_reg(nbubase, BRIDGE_PCIEMEM_BASE0 + link); + nlm_write_pci_reg(lnkbase, PCIE_BYTE_SWAP_MEM_BASE, reg); + + reg = nlm_read_bridge_reg(nbubase, + BRIDGE_PCIEMEM_LIMIT0 + link); + nlm_write_pci_reg(lnkbase, PCIE_BYTE_SWAP_MEM_LIM, reg | 0xfff); + + reg = nlm_read_bridge_reg(nbubase, BRIDGE_PCIEIO_BASE0 + link); + nlm_write_pci_reg(lnkbase, PCIE_BYTE_SWAP_IO_BASE, reg); + + reg = nlm_read_bridge_reg(nbubase, BRIDGE_PCIEIO_LIMIT0 + link); + nlm_write_pci_reg(lnkbase, PCIE_BYTE_SWAP_IO_LIM, reg | 0xfff); + } +} +#else +/* Swap configuration not needed in little-endian mode */ +static inline void xlp_config_pci_bswap(int node, int link) {} +#endif /* __BIG_ENDIAN */ + +static int __init pcibios_init(void) +{ + uint64_t pciebase; + int link, n; + u32 reg; + + /* Firmware assigns PCI resources */ + pci_set_flags(PCI_PROBE_ONLY); + pci_config_base = ioremap(XLP_DEFAULT_PCI_ECFG_BASE, 64 << 20); + + /* Extend IO port for memory mapped io */ + ioport_resource.start = 0; + ioport_resource.end = ~0; + + for (n = 0; n < NLM_NR_NODES; n++) { + if (!nlm_node_present(n)) + continue; + + for (link = 0; link < PCIE_NLINKS; link++) { + pciebase = nlm_get_pcie_base(n, link); + if (nlm_read_pci_reg(pciebase, 0) == 0xffffffff) + continue; + xlp_config_pci_bswap(n, link); + xlp_init_node_msi_irqs(n, link); + + /* put in intpin and irq - u-boot does not */ + reg = nlm_read_pci_reg(pciebase, 0xf); + reg &= ~0x1ffu; + reg |= (1 << 8) | PIC_PCIE_LINK_LEGACY_IRQ(link); + nlm_write_pci_reg(pciebase, 0xf, reg); + pr_info("XLP PCIe: Link %d-%d initialized.\n", n, link); + } + } + + set_io_port_base(CKSEG1); + nlm_pci_controller.io_map_base = CKSEG1; + + register_pci_controller(&nlm_pci_controller); + pr_info("XLP PCIe Controller %pR%pR.\n", &nlm_pci_io_resource, + &nlm_pci_mem_resource); + + return 0; +} +arch_initcall(pcibios_init); diff --git a/arch/mips/pci/pci-xlr.c b/arch/mips/pci/pci-xlr.c new file mode 100644 index 00000000000..0dde80332d3 --- /dev/null +++ b/arch/mips/pci/pci-xlr.c @@ -0,0 +1,368 @@ +/* + * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights + * reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the NetLogic + * license below: + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <linux/types.h> +#include <linux/pci.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/msi.h> +#include <linux/mm.h> +#include <linux/irq.h> +#include <linux/irqdesc.h> +#include <linux/console.h> +#include <linux/pci_regs.h> + +#include <asm/io.h> + +#include <asm/netlogic/interrupt.h> +#include <asm/netlogic/haldefs.h> +#include <asm/netlogic/common.h> + +#include <asm/netlogic/xlr/msidef.h> +#include <asm/netlogic/xlr/iomap.h> +#include <asm/netlogic/xlr/pic.h> +#include <asm/netlogic/xlr/xlr.h> + +static void *pci_config_base; + +#define pci_cfg_addr(bus, devfn, off) (((bus) << 16) | ((devfn) << 8) | (off)) + +/* PCI ops */ +static inline u32 pci_cfg_read_32bit(struct pci_bus *bus, unsigned int devfn, + int where) +{ + u32 data; + u32 *cfgaddr; + + cfgaddr = (u32 *)(pci_config_base + + pci_cfg_addr(bus->number, devfn, where & ~3)); + data = *cfgaddr; + return cpu_to_le32(data); +} + +static inline void pci_cfg_write_32bit(struct pci_bus *bus, unsigned int devfn, + int where, u32 data) +{ + u32 *cfgaddr; + + cfgaddr = (u32 *)(pci_config_base + + pci_cfg_addr(bus->number, devfn, where & ~3)); + *cfgaddr = cpu_to_le32(data); +} + +static int nlm_pcibios_read(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 *val) +{ + u32 data; + + if ((size == 2) && (where & 1)) + return PCIBIOS_BAD_REGISTER_NUMBER; + else if ((size == 4) && (where & 3)) + return PCIBIOS_BAD_REGISTER_NUMBER; + + data = pci_cfg_read_32bit(bus, devfn, where); + + if (size == 1) + *val = (data >> ((where & 3) << 3)) & 0xff; + else if (size == 2) + *val = (data >> ((where & 3) << 3)) & 0xffff; + else + *val = data; + + return PCIBIOS_SUCCESSFUL; +} + + +static int nlm_pcibios_write(struct pci_bus *bus, unsigned int devfn, + int where, int size, u32 val) +{ + u32 data; + + if ((size == 2) && (where & 1)) + return PCIBIOS_BAD_REGISTER_NUMBER; + else if ((size == 4) && (where & 3)) + return PCIBIOS_BAD_REGISTER_NUMBER; + + data = pci_cfg_read_32bit(bus, devfn, where); + + if (size == 1) + data = (data & ~(0xff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + else if (size == 2) + data = (data & ~(0xffff << ((where & 3) << 3))) | + (val << ((where & 3) << 3)); + else + data = val; + + pci_cfg_write_32bit(bus, devfn, where, data); + + return PCIBIOS_SUCCESSFUL; +} + +struct pci_ops nlm_pci_ops = { + .read = nlm_pcibios_read, + .write = nlm_pcibios_write +}; + +static struct resource nlm_pci_mem_resource = { + .name = "XLR PCI MEM", + .start = 0xd0000000UL, /* 256MB PCI mem @ 0xd000_0000 */ + .end = 0xdfffffffUL, + .flags = IORESOURCE_MEM, +}; + +static struct resource nlm_pci_io_resource = { + .name = "XLR IO MEM", + .start = 0x10000000UL, /* 16MB PCI IO @ 0x1000_0000 */ + .end = 0x100fffffUL, + .flags = IORESOURCE_IO, +}; + +struct pci_controller nlm_pci_controller = { + .index = 0, + .pci_ops = &nlm_pci_ops, + .mem_resource = &nlm_pci_mem_resource, + .mem_offset = 0x00000000UL, + .io_resource = &nlm_pci_io_resource, + .io_offset = 0x00000000UL, +}; + +/* + * The top level PCIe links on the XLS PCIe controller appear as + * bridges. Given a device, this function finds which link it is + * on. + */ +static struct pci_dev *xls_get_pcie_link(const struct pci_dev *dev) +{ + struct pci_bus *bus, *p; + + /* Find the bridge on bus 0 */ + bus = dev->bus; + for (p = bus->parent; p && p->number != 0; p = p->parent) + bus = p; + + return p ? bus->self : NULL; +} + +static int nlm_pci_link_to_irq(int link) +{ + switch (link) { + case 0: + return PIC_PCIE_LINK0_IRQ; + case 1: + return PIC_PCIE_LINK1_IRQ; + case 2: + if (nlm_chip_is_xls_b()) + return PIC_PCIE_XLSB0_LINK2_IRQ; + else + return PIC_PCIE_LINK2_IRQ; + case 3: + if (nlm_chip_is_xls_b()) + return PIC_PCIE_XLSB0_LINK3_IRQ; + else + return PIC_PCIE_LINK3_IRQ; + } + WARN(1, "Unexpected link %d\n", link); + return 0; +} + +static int get_irq_vector(const struct pci_dev *dev) +{ + struct pci_dev *lnk; + int link; + + if (!nlm_chip_is_xls()) + return PIC_PCIX_IRQ; /* for XLR just one IRQ */ + + lnk = xls_get_pcie_link(dev); + if (lnk == NULL) + return 0; + + link = PCI_SLOT(lnk->devfn); + return nlm_pci_link_to_irq(link); +} + +#ifdef CONFIG_PCI_MSI +void arch_teardown_msi_irq(unsigned int irq) +{ +} + +int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc) +{ + struct msi_msg msg; + struct pci_dev *lnk; + int irq, ret; + u16 val; + + /* MSI not supported on XLR */ + if (!nlm_chip_is_xls()) + return 1; + + /* + * Enable MSI on the XLS PCIe controller bridge which was disabled + * at enumeration, the bridge MSI capability is at 0x50 + */ + lnk = xls_get_pcie_link(dev); + if (lnk == NULL) + return 1; + + pci_read_config_word(lnk, 0x50 + PCI_MSI_FLAGS, &val); + if ((val & PCI_MSI_FLAGS_ENABLE) == 0) { + val |= PCI_MSI_FLAGS_ENABLE; + pci_write_config_word(lnk, 0x50 + PCI_MSI_FLAGS, val); + } + + irq = get_irq_vector(dev); + if (irq <= 0) + return 1; + + msg.address_hi = MSI_ADDR_BASE_HI; + msg.address_lo = MSI_ADDR_BASE_LO | + MSI_ADDR_DEST_MODE_PHYSICAL | + MSI_ADDR_REDIRECTION_CPU; + + msg.data = MSI_DATA_TRIGGER_EDGE | + MSI_DATA_LEVEL_ASSERT | + MSI_DATA_DELIVERY_FIXED; + + ret = irq_set_msi_desc(irq, desc); + if (ret < 0) + return ret; + + write_msi_msg(irq, &msg); + return 0; +} +#endif + +/* Extra ACK needed for XLR on chip PCI controller */ +static void xlr_pci_ack(struct irq_data *d) +{ + uint64_t pcibase = nlm_mmio_base(NETLOGIC_IO_PCIX_OFFSET); + + nlm_read_reg(pcibase, (0x140 >> 2)); +} + +/* Extra ACK needed for XLS on chip PCIe controller */ +static void xls_pcie_ack(struct irq_data *d) +{ + uint64_t pciebase_le = nlm_mmio_base(NETLOGIC_IO_PCIE_1_OFFSET); + + switch (d->irq) { + case PIC_PCIE_LINK0_IRQ: + nlm_write_reg(pciebase_le, (0x90 >> 2), 0xffffffff); + break; + case PIC_PCIE_LINK1_IRQ: + nlm_write_reg(pciebase_le, (0x94 >> 2), 0xffffffff); + break; + case PIC_PCIE_LINK2_IRQ: + nlm_write_reg(pciebase_le, (0x190 >> 2), 0xffffffff); + break; + case PIC_PCIE_LINK3_IRQ: + nlm_write_reg(pciebase_le, (0x194 >> 2), 0xffffffff); + break; + } +} + +/* For XLS B silicon, the 3,4 PCI interrupts are different */ +static void xls_pcie_ack_b(struct irq_data *d) +{ + uint64_t pciebase_le = nlm_mmio_base(NETLOGIC_IO_PCIE_1_OFFSET); + + switch (d->irq) { + case PIC_PCIE_LINK0_IRQ: + nlm_write_reg(pciebase_le, (0x90 >> 2), 0xffffffff); + break; + case PIC_PCIE_LINK1_IRQ: + nlm_write_reg(pciebase_le, (0x94 >> 2), 0xffffffff); + break; + case PIC_PCIE_XLSB0_LINK2_IRQ: + nlm_write_reg(pciebase_le, (0x190 >> 2), 0xffffffff); + break; + case PIC_PCIE_XLSB0_LINK3_IRQ: + nlm_write_reg(pciebase_le, (0x194 >> 2), 0xffffffff); + break; + } +} + +int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +{ + return get_irq_vector(dev); +} + +/* Do platform specific device initialization at pci_enable_device() time */ +int pcibios_plat_dev_init(struct pci_dev *dev) +{ + return 0; +} + +static int __init pcibios_init(void) +{ + void (*extra_ack)(struct irq_data *); + int link, irq; + + /* PSB assigns PCI resources */ + pci_set_flags(PCI_PROBE_ONLY); + pci_config_base = ioremap(DEFAULT_PCI_CONFIG_BASE, 16 << 20); + + /* Extend IO port for memory mapped io */ + ioport_resource.start = 0; + ioport_resource.end = ~0; + + set_io_port_base(CKSEG1); + nlm_pci_controller.io_map_base = CKSEG1; + + pr_info("Registering XLR/XLS PCIX/PCIE Controller.\n"); + register_pci_controller(&nlm_pci_controller); + + /* + * For PCI interrupts, we need to ack the PCI controller too, overload + * irq handler data to do this + */ + if (!nlm_chip_is_xls()) { + /* XLR PCI controller ACK */ + nlm_set_pic_extra_ack(0, PIC_PCIX_IRQ, xlr_pci_ack); + } else { + if (nlm_chip_is_xls_b()) + extra_ack = xls_pcie_ack_b; + else + extra_ack = xls_pcie_ack; + for (link = 0; link < 4; link++) { + irq = nlm_pci_link_to_irq(link); + nlm_set_pic_extra_ack(0, irq, extra_ack); + } + } + return 0; +} + +arch_initcall(pcibios_init); diff --git a/arch/mips/pci/pci-yosemite.c b/arch/mips/pci/pci-yosemite.c deleted file mode 100644 index dac9ed4b0cc..00000000000 --- a/arch/mips/pci/pci-yosemite.c +++ /dev/null @@ -1,60 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) - */ -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/pci.h> -#include <asm/titan_dep.h> - -extern struct pci_ops titan_pci_ops; - -static struct resource py_mem_resource = { - "Titan PCI MEM", 0xe0000000UL, 0xe3ffffffUL, IORESOURCE_MEM -}; - -/* - * PMON really reserves 16MB of I/O port space but that's stupid, nothing - * needs that much since allocations are limited to 256 bytes per device - * anyway. So we just claim 64kB here. - */ -#define TITAN_IO_SIZE 0x0000ffffUL -#define TITAN_IO_BASE 0xe8000000UL - -static struct resource py_io_resource = { - "Titan IO MEM", 0x00001000UL, TITAN_IO_SIZE - 1, IORESOURCE_IO, -}; - -static struct pci_controller py_controller = { - .pci_ops = &titan_pci_ops, - .mem_resource = &py_mem_resource, - .mem_offset = 0x00000000UL, - .io_resource = &py_io_resource, - .io_offset = 0x00000000UL -}; - -static char ioremap_failed[] __initdata = "Could not ioremap I/O port range"; - -static int __init pmc_yosemite_setup(void) -{ - unsigned long io_v_base; - - io_v_base = (unsigned long) ioremap(TITAN_IO_BASE, TITAN_IO_SIZE); - if (!io_v_base) - panic(ioremap_failed); - - set_io_port_base(io_v_base); - TITAN_WRITE(RM9000x2_OCD_LKM7, TITAN_READ(RM9000x2_OCD_LKM7) | 1); - - ioport_resource.end = TITAN_IO_SIZE - 1; - - register_pci_controller(&py_controller); - - return 0; -} - -arch_initcall(pmc_yosemite_setup); diff --git a/arch/mips/pci/pci.c b/arch/mips/pci/pci.c index 21402ffd7c9..1bf60b12737 100644 --- a/arch/mips/pci/pci.c +++ b/arch/mips/pci/pci.c @@ -1,40 +1,40 @@ /* - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * - * Copyright (C) 2003, 04 Ralf Baechle (ralf@linux-mips.org) + * Copyright (C) 2003, 04, 11 Ralf Baechle (ralf@linux-mips.org) + * Copyright (C) 2011 Wind River Systems, + * written by Ralf Baechle (ralf@linux-mips.org) */ -#include <linux/config.h> +#include <linux/bug.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/bootmem.h> +#include <linux/export.h> #include <linux/init.h> #include <linux/types.h> #include <linux/pci.h> +#include <linux/of_address.h> + +#include <asm/cpu-info.h> /* - * Indicate whether we respect the PCI setup left by the firmware. - * - * Make this long-lived so that we know when shutting down - * whether we probed only or not. + * If PCI_PROBE_ONLY in pci_flags is set, we don't change any PCI resource + * assignments. */ -int pci_probe_only; - -#define PCI_ASSIGN_ALL_BUSSES 1 - -unsigned int pci_probe = PCI_ASSIGN_ALL_BUSSES; /* * The PCI controller list. */ -struct pci_controller *hose_head, **hose_tail = &hose_head; -struct pci_controller *pci_isa_hose; +static struct pci_controller *hose_head, **hose_tail = &hose_head; + +unsigned long PCIBIOS_MIN_IO; +unsigned long PCIBIOS_MIN_MEM; -unsigned long PCIBIOS_MIN_IO = 0x0000; -unsigned long PCIBIOS_MIN_MEM = 0; +static int pci_initialized; /* * We need to avoid collisions with `mirrored' VGA ports @@ -49,13 +49,13 @@ unsigned long PCIBIOS_MIN_MEM = 0; * but we want to try to avoid allocating at 0x2900-0x2bff * which might have be mirrored at 0x0100-0x03ff.. */ -void -pcibios_align_resource(void *data, struct resource *res, - unsigned long size, unsigned long align) +resource_size_t +pcibios_align_resource(void *data, const struct resource *res, + resource_size_t size, resource_size_t align) { struct pci_dev *dev = data; struct pci_controller *hose = dev->sysdata; - unsigned long start = res->start; + resource_size_t start = res->start; if (res->flags & IORESOURCE_IO) { /* Make sure we start at our min on all hoses */ @@ -73,88 +73,178 @@ pcibios_align_resource(void *data, struct resource *res, start = PCIBIOS_MIN_MEM + hose->mem_resource->start; } - res->start = start; + return start; +} + +static void pcibios_scanbus(struct pci_controller *hose) +{ + static int next_busno; + static int need_domain_info; + LIST_HEAD(resources); + struct pci_bus *bus; + + if (!hose->iommu) + PCI_DMA_BUS_IS_PHYS = 1; + + if (hose->get_busno && pci_has_flag(PCI_PROBE_ONLY)) + next_busno = (*hose->get_busno)(); + + pci_add_resource_offset(&resources, + hose->mem_resource, hose->mem_offset); + pci_add_resource_offset(&resources, hose->io_resource, hose->io_offset); + bus = pci_scan_root_bus(NULL, next_busno, hose->pci_ops, hose, + &resources); + if (!bus) + pci_free_resource_list(&resources); + + hose->bus = bus; + + need_domain_info = need_domain_info || hose->index; + hose->need_domain_info = need_domain_info; + if (bus) { + next_busno = bus->busn_res.end + 1; + /* Don't allow 8-bit bus number overflow inside the hose - + reserve some space for bridges. */ + if (next_busno > 224) { + next_busno = 0; + need_domain_info = 1; + } + + if (!pci_has_flag(PCI_PROBE_ONLY)) { + pci_bus_size_bridges(bus); + pci_bus_assign_resources(bus); + } + } } -struct pci_controller * __init alloc_pci_controller(void) +#ifdef CONFIG_OF +void pci_load_of_ranges(struct pci_controller *hose, struct device_node *node) { - return alloc_bootmem(sizeof(struct pci_controller)); + struct of_pci_range range; + struct of_pci_range_parser parser; + + pr_info("PCI host bridge %s ranges:\n", node->full_name); + hose->of_node = node; + + if (of_pci_range_parser_init(&parser, node)) + return; + + for_each_of_pci_range(&parser, &range) { + struct resource *res = NULL; + + switch (range.flags & IORESOURCE_TYPE_BITS) { + case IORESOURCE_IO: + pr_info(" IO 0x%016llx..0x%016llx\n", + range.cpu_addr, + range.cpu_addr + range.size - 1); + hose->io_map_base = + (unsigned long)ioremap(range.cpu_addr, + range.size); + res = hose->io_resource; + break; + case IORESOURCE_MEM: + pr_info(" MEM 0x%016llx..0x%016llx\n", + range.cpu_addr, + range.cpu_addr + range.size - 1); + res = hose->mem_resource; + break; + } + if (res != NULL) + of_pci_range_to_resource(&range, node, res); + } } -void __init register_pci_controller(struct pci_controller *hose) +struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus) { - *hose_tail = hose; - hose_tail = &hose->next; + struct pci_controller *hose = bus->sysdata; + + return of_node_get(hose->of_node); } +#endif -/* Most MIPS systems have straight-forward swizzling needs. */ +static DEFINE_MUTEX(pci_scan_mutex); -static inline u8 bridge_swizzle(u8 pin, u8 slot) +void register_pci_controller(struct pci_controller *hose) { - return (((pin - 1) + slot) % 4) + 1; + struct resource *parent; + + parent = hose->mem_resource->parent; + if (!parent) + parent = &iomem_resource; + + if (request_resource(parent, hose->mem_resource) < 0) + goto out; + + parent = hose->io_resource->parent; + if (!parent) + parent = &ioport_resource; + + if (request_resource(parent, hose->io_resource) < 0) { + release_resource(hose->mem_resource); + goto out; + } + + *hose_tail = hose; + hose_tail = &hose->next; + + /* + * Do not panic here but later - this might happen before console init. + */ + if (!hose->io_map_base) { + printk(KERN_WARNING + "registering PCI controller with io_map_base unset\n"); + } + + /* + * Scan the bus if it is register after the PCI subsystem + * initialization. + */ + if (pci_initialized) { + mutex_lock(&pci_scan_mutex); + pcibios_scanbus(hose); + mutex_unlock(&pci_scan_mutex); + } + + return; + +out: + printk(KERN_WARNING + "Skipping PCI bus scan due to resource conflict\n"); } -static u8 __init common_swizzle(struct pci_dev *dev, u8 *pinp) +static void __init pcibios_set_cache_line_size(void) { - u8 pin = *pinp; + struct cpuinfo_mips *c = ¤t_cpu_data; + unsigned int lsize; + + /* + * Set PCI cacheline size to that of the highest level in the + * cache hierarchy. + */ + lsize = c->dcache.linesz; + lsize = c->scache.linesz ? : lsize; + lsize = c->tcache.linesz ? : lsize; + + BUG_ON(!lsize); - while (dev->bus->parent) { - pin = bridge_swizzle(pin, PCI_SLOT(dev->devfn)); - /* Move up the chain of bridges. */ - dev = dev->bus->self; - } - *pinp = pin; + pci_dfl_cache_line_size = lsize >> 2; - /* The slot is the slot of the last bridge. */ - return PCI_SLOT(dev->devfn); + pr_debug("PCI: pci_cache_line_size set to %d bytes\n", lsize); } static int __init pcibios_init(void) { struct pci_controller *hose; - struct pci_bus *bus; - int next_busno; - int need_domain_info = 0; + + pcibios_set_cache_line_size(); /* Scan all of the recorded PCI controllers. */ - for (next_busno = 0, hose = hose_head; hose; hose = hose->next) { - - if (request_resource(&iomem_resource, hose->mem_resource) < 0) - goto out; - if (request_resource(&ioport_resource, hose->io_resource) < 0) - goto out_free_mem_resource; - - if (!hose->iommu) - PCI_DMA_BUS_IS_PHYS = 1; - - if (hose->get_busno && pci_probe_only) - next_busno = (*hose->get_busno)(); - - bus = pci_scan_bus(next_busno, hose->pci_ops, hose); - hose->bus = bus; - hose->need_domain_info = need_domain_info; - if (bus) { - next_busno = bus->subordinate + 1; - /* Don't allow 8-bit bus number overflow inside the hose - - reserve some space for bridges. */ - if (next_busno > 224) { - next_busno = 0; - need_domain_info = 1; - } - } - continue; + for (hose = hose_head; hose; hose = hose->next) + pcibios_scanbus(hose); -out_free_mem_resource: - release_resource(hose->mem_resource); + pci_fixup_irqs(pci_common_swizzle, pcibios_map_irq); -out: - printk(KERN_WARNING - "Skipping PCI bus scan due to resource conflict\n"); - } - - if (!pci_probe_only) - pci_assign_unassigned_resources(); - pci_fixup_irqs(common_swizzle, pcibios_map_irq); + pci_initialized = 1; return 0; } @@ -175,8 +265,15 @@ static int pcibios_enable_resources(struct pci_dev *dev, int mask) continue; r = &dev->resource[idx]; + if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM))) + continue; + if ((idx == PCI_ROM_RESOURCE) && + (!(r->flags & IORESOURCE_ROM_ENABLE))) + continue; if (!r->start && r->end) { - printk(KERN_ERR "PCI: Device %s not available because of resource collisions\n", pci_name(dev)); + printk(KERN_ERR "PCI: Device %s not available " + "because of resource collisions\n", + pci_name(dev)); return -EINVAL; } if (r->flags & IORESOURCE_IO) @@ -184,39 +281,17 @@ static int pcibios_enable_resources(struct pci_dev *dev, int mask) if (r->flags & IORESOURCE_MEM) cmd |= PCI_COMMAND_MEMORY; } - if (dev->resource[PCI_ROM_RESOURCE].start) - cmd |= PCI_COMMAND_MEMORY; if (cmd != old_cmd) { - printk("PCI: Enabling device %s (%04x -> %04x)\n", pci_name(dev), old_cmd, cmd); + printk("PCI: Enabling device %s (%04x -> %04x)\n", + pci_name(dev), old_cmd, cmd); pci_write_config_word(dev, PCI_COMMAND, cmd); } return 0; } -/* - * If we set up a device for bus mastering, we need to check the latency - * timer as certain crappy BIOSes forget to set it properly. - */ -unsigned int pcibios_max_latency = 255; - -void pcibios_set_master(struct pci_dev *dev) -{ - u8 lat; - pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat); - if (lat < 16) - lat = (64 <= pcibios_max_latency) ? 64 : pcibios_max_latency; - else if (lat > pcibios_max_latency) - lat = pcibios_max_latency; - else - return; - printk(KERN_DEBUG "PCI: Setting latency timer of device %s to %d\n", - pci_name(dev), lat); - pci_write_config_byte(dev, PCI_LATENCY_TIMER, lat); -} - unsigned int pcibios_assign_all_busses(void) { - return (pci_probe & PCI_ASSIGN_ALL_BUSSES) ? 1 : 0; + return 1; } int pcibios_enable_device(struct pci_dev *dev, int mask) @@ -229,98 +304,48 @@ int pcibios_enable_device(struct pci_dev *dev, int mask) return pcibios_plat_dev_init(dev); } -static void __init pcibios_fixup_device_resources(struct pci_dev *dev, - struct pci_bus *bus) +void pcibios_fixup_bus(struct pci_bus *bus) { - /* Update device resources. */ - struct pci_controller *hose = (struct pci_controller *)bus->sysdata; - unsigned long offset = 0; - int i; - - for (i = 0; i < PCI_NUM_RESOURCES; i++) { - if (!dev->resource[i].start) - continue; - if (dev->resource[i].flags & IORESOURCE_IO) - offset = hose->io_offset; - else if (dev->resource[i].flags & IORESOURCE_MEM) - offset = hose->mem_offset; - - dev->resource[i].start += offset; - dev->resource[i].end += offset; - } -} - -void __devinit pcibios_fixup_bus(struct pci_bus *bus) -{ - /* Propagate hose info into the subordinate devices. */ - - struct pci_controller *hose = bus->sysdata; - struct list_head *ln; struct pci_dev *dev = bus->self; - if (!dev) { - bus->resource[0] = hose->io_resource; - bus->resource[1] = hose->mem_resource; - } else if (pci_probe_only && - (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { + if (pci_has_flag(PCI_PROBE_ONLY) && dev && + (dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { pci_read_bridge_bases(bus); - pcibios_fixup_device_resources(dev, bus); - } - - for (ln = bus->devices.next; ln != &bus->devices; ln = ln->next) { - struct pci_dev *dev = pci_dev_b(ln); - - if ((dev->class >> 8) != PCI_CLASS_BRIDGE_PCI) - pcibios_fixup_device_resources(dev, bus); } } -void __init -pcibios_update_irq(struct pci_dev *dev, int irq) -{ - pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq); -} - -void __devinit -pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, - struct resource *res) -{ - struct pci_controller *hose = (struct pci_controller *)dev->sysdata; - unsigned long offset = 0; - - if (res->flags & IORESOURCE_IO) - offset = hose->io_offset; - else if (res->flags & IORESOURCE_MEM) - offset = hose->mem_offset; - - region->start = res->start - offset; - region->end = res->end - offset; -} +EXPORT_SYMBOL(PCIBIOS_MIN_IO); +EXPORT_SYMBOL(PCIBIOS_MIN_MEM); -void __devinit -pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, - struct pci_bus_region *region) +int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, + enum pci_mmap_state mmap_state, int write_combine) { - struct pci_controller *hose = (struct pci_controller *)dev->sysdata; - unsigned long offset = 0; - - if (res->flags & IORESOURCE_IO) - offset = hose->io_offset; - else if (res->flags & IORESOURCE_MEM) - offset = hose->mem_offset; - - res->start = region->start + offset; - res->end = region->end + offset; + unsigned long prot; + + /* + * I/O space can be accessed via normal processor loads and stores on + * this platform but for now we elect not to do this and portable + * drivers should not do this anyway. + */ + if (mmap_state == pci_mmap_io) + return -EINVAL; + + /* + * Ignore write-combine; for now only return uncached mappings. + */ + prot = pgprot_val(vma->vm_page_prot); + prot = (prot & ~_CACHE_MASK) | _CACHE_UNCACHED; + vma->vm_page_prot = __pgprot(prot); + + return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff, + vma->vm_end - vma->vm_start, vma->vm_page_prot); } -#ifdef CONFIG_HOTPLUG -EXPORT_SYMBOL(pcibios_resource_to_bus); -EXPORT_SYMBOL(pcibios_bus_to_resource); -EXPORT_SYMBOL(PCIBIOS_MIN_IO); -EXPORT_SYMBOL(PCIBIOS_MIN_MEM); -#endif +char * (*pcibios_plat_setup)(char *str) __initdata; -char *pcibios_setup(char *str) +char *__init pcibios_setup(char *str) { + if (pcibios_plat_setup) + return pcibios_plat_setup(str); return str; } diff --git a/arch/mips/pci/pcie-octeon.c b/arch/mips/pci/pcie-octeon.c new file mode 100644 index 00000000000..5e36c33e554 --- /dev/null +++ b/arch/mips/pci/pcie-octeon.c @@ -0,0 +1,2099 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2007, 2008, 2009, 2010, 2011 Cavium Networks + */ +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/interrupt.h> +#include <linux/time.h> +#include <linux/delay.h> +#include <linux/module.h> + +#include <asm/octeon/octeon.h> +#include <asm/octeon/cvmx-npei-defs.h> +#include <asm/octeon/cvmx-pciercx-defs.h> +#include <asm/octeon/cvmx-pescx-defs.h> +#include <asm/octeon/cvmx-pexp-defs.h> +#include <asm/octeon/cvmx-pemx-defs.h> +#include <asm/octeon/cvmx-dpi-defs.h> +#include <asm/octeon/cvmx-sli-defs.h> +#include <asm/octeon/cvmx-sriox-defs.h> +#include <asm/octeon/cvmx-helper-errata.h> +#include <asm/octeon/pci-octeon.h> + +#define MRRS_CN5XXX 0 /* 128 byte Max Read Request Size */ +#define MPS_CN5XXX 0 /* 128 byte Max Packet Size (Limit of most PCs) */ +#define MRRS_CN6XXX 3 /* 1024 byte Max Read Request Size */ +#define MPS_CN6XXX 0 /* 128 byte Max Packet Size (Limit of most PCs) */ + +/* Module parameter to disable PCI probing */ +static int pcie_disable; +module_param(pcie_disable, int, S_IRUGO); + +static int enable_pcie_14459_war; +static int enable_pcie_bus_num_war[2]; + +union cvmx_pcie_address { + uint64_t u64; + struct { + uint64_t upper:2; /* Normally 2 for XKPHYS */ + uint64_t reserved_49_61:13; /* Must be zero */ + uint64_t io:1; /* 1 for IO space access */ + uint64_t did:5; /* PCIe DID = 3 */ + uint64_t subdid:3; /* PCIe SubDID = 1 */ + uint64_t reserved_36_39:4; /* Must be zero */ + uint64_t es:2; /* Endian swap = 1 */ + uint64_t port:2; /* PCIe port 0,1 */ + uint64_t reserved_29_31:3; /* Must be zero */ + /* + * Selects the type of the configuration request (0 = type 0, + * 1 = type 1). + */ + uint64_t ty:1; + /* Target bus number sent in the ID in the request. */ + uint64_t bus:8; + /* + * Target device number sent in the ID in the + * request. Note that Dev must be zero for type 0 + * configuration requests. + */ + uint64_t dev:5; + /* Target function number sent in the ID in the request. */ + uint64_t func:3; + /* + * Selects a register in the configuration space of + * the target. + */ + uint64_t reg:12; + } config; + struct { + uint64_t upper:2; /* Normally 2 for XKPHYS */ + uint64_t reserved_49_61:13; /* Must be zero */ + uint64_t io:1; /* 1 for IO space access */ + uint64_t did:5; /* PCIe DID = 3 */ + uint64_t subdid:3; /* PCIe SubDID = 2 */ + uint64_t reserved_36_39:4; /* Must be zero */ + uint64_t es:2; /* Endian swap = 1 */ + uint64_t port:2; /* PCIe port 0,1 */ + uint64_t address:32; /* PCIe IO address */ + } io; + struct { + uint64_t upper:2; /* Normally 2 for XKPHYS */ + uint64_t reserved_49_61:13; /* Must be zero */ + uint64_t io:1; /* 1 for IO space access */ + uint64_t did:5; /* PCIe DID = 3 */ + uint64_t subdid:3; /* PCIe SubDID = 3-6 */ + uint64_t reserved_36_39:4; /* Must be zero */ + uint64_t address:36; /* PCIe Mem address */ + } mem; +}; + +static int cvmx_pcie_rc_initialize(int pcie_port); + +#include <dma-coherence.h> + +/** + * Return the Core virtual base address for PCIe IO access. IOs are + * read/written as an offset from this address. + * + * @pcie_port: PCIe port the IO is for + * + * Returns 64bit Octeon IO base address for read/write + */ +static inline uint64_t cvmx_pcie_get_io_base_address(int pcie_port) +{ + union cvmx_pcie_address pcie_addr; + pcie_addr.u64 = 0; + pcie_addr.io.upper = 0; + pcie_addr.io.io = 1; + pcie_addr.io.did = 3; + pcie_addr.io.subdid = 2; + pcie_addr.io.es = 1; + pcie_addr.io.port = pcie_port; + return pcie_addr.u64; +} + +/** + * Size of the IO address region returned at address + * cvmx_pcie_get_io_base_address() + * + * @pcie_port: PCIe port the IO is for + * + * Returns Size of the IO window + */ +static inline uint64_t cvmx_pcie_get_io_size(int pcie_port) +{ + return 1ull << 32; +} + +/** + * Return the Core virtual base address for PCIe MEM access. Memory is + * read/written as an offset from this address. + * + * @pcie_port: PCIe port the IO is for + * + * Returns 64bit Octeon IO base address for read/write + */ +static inline uint64_t cvmx_pcie_get_mem_base_address(int pcie_port) +{ + union cvmx_pcie_address pcie_addr; + pcie_addr.u64 = 0; + pcie_addr.mem.upper = 0; + pcie_addr.mem.io = 1; + pcie_addr.mem.did = 3; + pcie_addr.mem.subdid = 3 + pcie_port; + return pcie_addr.u64; +} + +/** + * Size of the Mem address region returned at address + * cvmx_pcie_get_mem_base_address() + * + * @pcie_port: PCIe port the IO is for + * + * Returns Size of the Mem window + */ +static inline uint64_t cvmx_pcie_get_mem_size(int pcie_port) +{ + return 1ull << 36; +} + +/** + * Read a PCIe config space register indirectly. This is used for + * registers of the form PCIEEP_CFG??? and PCIERC?_CFG???. + * + * @pcie_port: PCIe port to read from + * @cfg_offset: Address to read + * + * Returns Value read + */ +static uint32_t cvmx_pcie_cfgx_read(int pcie_port, uint32_t cfg_offset) +{ + if (octeon_has_feature(OCTEON_FEATURE_NPEI)) { + union cvmx_pescx_cfg_rd pescx_cfg_rd; + pescx_cfg_rd.u64 = 0; + pescx_cfg_rd.s.addr = cfg_offset; + cvmx_write_csr(CVMX_PESCX_CFG_RD(pcie_port), pescx_cfg_rd.u64); + pescx_cfg_rd.u64 = cvmx_read_csr(CVMX_PESCX_CFG_RD(pcie_port)); + return pescx_cfg_rd.s.data; + } else { + union cvmx_pemx_cfg_rd pemx_cfg_rd; + pemx_cfg_rd.u64 = 0; + pemx_cfg_rd.s.addr = cfg_offset; + cvmx_write_csr(CVMX_PEMX_CFG_RD(pcie_port), pemx_cfg_rd.u64); + pemx_cfg_rd.u64 = cvmx_read_csr(CVMX_PEMX_CFG_RD(pcie_port)); + return pemx_cfg_rd.s.data; + } +} + +/** + * Write a PCIe config space register indirectly. This is used for + * registers of the form PCIEEP_CFG??? and PCIERC?_CFG???. + * + * @pcie_port: PCIe port to write to + * @cfg_offset: Address to write + * @val: Value to write + */ +static void cvmx_pcie_cfgx_write(int pcie_port, uint32_t cfg_offset, + uint32_t val) +{ + if (octeon_has_feature(OCTEON_FEATURE_NPEI)) { + union cvmx_pescx_cfg_wr pescx_cfg_wr; + pescx_cfg_wr.u64 = 0; + pescx_cfg_wr.s.addr = cfg_offset; + pescx_cfg_wr.s.data = val; + cvmx_write_csr(CVMX_PESCX_CFG_WR(pcie_port), pescx_cfg_wr.u64); + } else { + union cvmx_pemx_cfg_wr pemx_cfg_wr; + pemx_cfg_wr.u64 = 0; + pemx_cfg_wr.s.addr = cfg_offset; + pemx_cfg_wr.s.data = val; + cvmx_write_csr(CVMX_PEMX_CFG_WR(pcie_port), pemx_cfg_wr.u64); + } +} + +/** + * Build a PCIe config space request address for a device + * + * @pcie_port: PCIe port to access + * @bus: Sub bus + * @dev: Device ID + * @fn: Device sub function + * @reg: Register to access + * + * Returns 64bit Octeon IO address + */ +static inline uint64_t __cvmx_pcie_build_config_addr(int pcie_port, int bus, + int dev, int fn, int reg) +{ + union cvmx_pcie_address pcie_addr; + union cvmx_pciercx_cfg006 pciercx_cfg006; + + pciercx_cfg006.u32 = + cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG006(pcie_port)); + if ((bus <= pciercx_cfg006.s.pbnum) && (dev != 0)) + return 0; + + pcie_addr.u64 = 0; + pcie_addr.config.upper = 2; + pcie_addr.config.io = 1; + pcie_addr.config.did = 3; + pcie_addr.config.subdid = 1; + pcie_addr.config.es = 1; + pcie_addr.config.port = pcie_port; + pcie_addr.config.ty = (bus > pciercx_cfg006.s.pbnum); + pcie_addr.config.bus = bus; + pcie_addr.config.dev = dev; + pcie_addr.config.func = fn; + pcie_addr.config.reg = reg; + return pcie_addr.u64; +} + +/** + * Read 8bits from a Device's config space + * + * @pcie_port: PCIe port the device is on + * @bus: Sub bus + * @dev: Device ID + * @fn: Device sub function + * @reg: Register to access + * + * Returns Result of the read + */ +static uint8_t cvmx_pcie_config_read8(int pcie_port, int bus, int dev, + int fn, int reg) +{ + uint64_t address = + __cvmx_pcie_build_config_addr(pcie_port, bus, dev, fn, reg); + if (address) + return cvmx_read64_uint8(address); + else + return 0xff; +} + +/** + * Read 16bits from a Device's config space + * + * @pcie_port: PCIe port the device is on + * @bus: Sub bus + * @dev: Device ID + * @fn: Device sub function + * @reg: Register to access + * + * Returns Result of the read + */ +static uint16_t cvmx_pcie_config_read16(int pcie_port, int bus, int dev, + int fn, int reg) +{ + uint64_t address = + __cvmx_pcie_build_config_addr(pcie_port, bus, dev, fn, reg); + if (address) + return le16_to_cpu(cvmx_read64_uint16(address)); + else + return 0xffff; +} + +/** + * Read 32bits from a Device's config space + * + * @pcie_port: PCIe port the device is on + * @bus: Sub bus + * @dev: Device ID + * @fn: Device sub function + * @reg: Register to access + * + * Returns Result of the read + */ +static uint32_t cvmx_pcie_config_read32(int pcie_port, int bus, int dev, + int fn, int reg) +{ + uint64_t address = + __cvmx_pcie_build_config_addr(pcie_port, bus, dev, fn, reg); + if (address) + return le32_to_cpu(cvmx_read64_uint32(address)); + else + return 0xffffffff; +} + +/** + * Write 8bits to a Device's config space + * + * @pcie_port: PCIe port the device is on + * @bus: Sub bus + * @dev: Device ID + * @fn: Device sub function + * @reg: Register to access + * @val: Value to write + */ +static void cvmx_pcie_config_write8(int pcie_port, int bus, int dev, int fn, + int reg, uint8_t val) +{ + uint64_t address = + __cvmx_pcie_build_config_addr(pcie_port, bus, dev, fn, reg); + if (address) + cvmx_write64_uint8(address, val); +} + +/** + * Write 16bits to a Device's config space + * + * @pcie_port: PCIe port the device is on + * @bus: Sub bus + * @dev: Device ID + * @fn: Device sub function + * @reg: Register to access + * @val: Value to write + */ +static void cvmx_pcie_config_write16(int pcie_port, int bus, int dev, int fn, + int reg, uint16_t val) +{ + uint64_t address = + __cvmx_pcie_build_config_addr(pcie_port, bus, dev, fn, reg); + if (address) + cvmx_write64_uint16(address, cpu_to_le16(val)); +} + +/** + * Write 32bits to a Device's config space + * + * @pcie_port: PCIe port the device is on + * @bus: Sub bus + * @dev: Device ID + * @fn: Device sub function + * @reg: Register to access + * @val: Value to write + */ +static void cvmx_pcie_config_write32(int pcie_port, int bus, int dev, int fn, + int reg, uint32_t val) +{ + uint64_t address = + __cvmx_pcie_build_config_addr(pcie_port, bus, dev, fn, reg); + if (address) + cvmx_write64_uint32(address, cpu_to_le32(val)); +} + +/** + * Initialize the RC config space CSRs + * + * @pcie_port: PCIe port to initialize + */ +static void __cvmx_pcie_rc_initialize_config_space(int pcie_port) +{ + union cvmx_pciercx_cfg030 pciercx_cfg030; + union cvmx_pciercx_cfg070 pciercx_cfg070; + union cvmx_pciercx_cfg001 pciercx_cfg001; + union cvmx_pciercx_cfg032 pciercx_cfg032; + union cvmx_pciercx_cfg006 pciercx_cfg006; + union cvmx_pciercx_cfg008 pciercx_cfg008; + union cvmx_pciercx_cfg009 pciercx_cfg009; + union cvmx_pciercx_cfg010 pciercx_cfg010; + union cvmx_pciercx_cfg011 pciercx_cfg011; + union cvmx_pciercx_cfg035 pciercx_cfg035; + union cvmx_pciercx_cfg075 pciercx_cfg075; + union cvmx_pciercx_cfg034 pciercx_cfg034; + + /* Max Payload Size (PCIE*_CFG030[MPS]) */ + /* Max Read Request Size (PCIE*_CFG030[MRRS]) */ + /* Relaxed-order, no-snoop enables (PCIE*_CFG030[RO_EN,NS_EN] */ + /* Error Message Enables (PCIE*_CFG030[CE_EN,NFE_EN,FE_EN,UR_EN]) */ + + pciercx_cfg030.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG030(pcie_port)); + if (OCTEON_IS_MODEL(OCTEON_CN5XXX)) { + pciercx_cfg030.s.mps = MPS_CN5XXX; + pciercx_cfg030.s.mrrs = MRRS_CN5XXX; + } else { + pciercx_cfg030.s.mps = MPS_CN6XXX; + pciercx_cfg030.s.mrrs = MRRS_CN6XXX; + } + /* + * Enable relaxed order processing. This will allow devices to + * affect read response ordering. + */ + pciercx_cfg030.s.ro_en = 1; + /* Enable no snoop processing. Not used by Octeon */ + pciercx_cfg030.s.ns_en = 1; + /* Correctable error reporting enable. */ + pciercx_cfg030.s.ce_en = 1; + /* Non-fatal error reporting enable. */ + pciercx_cfg030.s.nfe_en = 1; + /* Fatal error reporting enable. */ + pciercx_cfg030.s.fe_en = 1; + /* Unsupported request reporting enable. */ + pciercx_cfg030.s.ur_en = 1; + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG030(pcie_port), pciercx_cfg030.u32); + + + if (octeon_has_feature(OCTEON_FEATURE_NPEI)) { + union cvmx_npei_ctl_status2 npei_ctl_status2; + /* + * Max Payload Size (NPEI_CTL_STATUS2[MPS]) must match + * PCIE*_CFG030[MPS]. Max Read Request Size + * (NPEI_CTL_STATUS2[MRRS]) must not exceed + * PCIE*_CFG030[MRRS] + */ + npei_ctl_status2.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_CTL_STATUS2); + /* Max payload size = 128 bytes for best Octeon DMA performance */ + npei_ctl_status2.s.mps = MPS_CN5XXX; + /* Max read request size = 128 bytes for best Octeon DMA performance */ + npei_ctl_status2.s.mrrs = MRRS_CN5XXX; + if (pcie_port) + npei_ctl_status2.s.c1_b1_s = 3; /* Port1 BAR1 Size 256MB */ + else + npei_ctl_status2.s.c0_b1_s = 3; /* Port0 BAR1 Size 256MB */ + + cvmx_write_csr(CVMX_PEXP_NPEI_CTL_STATUS2, npei_ctl_status2.u64); + } else { + /* + * Max Payload Size (DPI_SLI_PRTX_CFG[MPS]) must match + * PCIE*_CFG030[MPS]. Max Read Request Size + * (DPI_SLI_PRTX_CFG[MRRS]) must not exceed + * PCIE*_CFG030[MRRS]. + */ + union cvmx_dpi_sli_prtx_cfg prt_cfg; + union cvmx_sli_s2m_portx_ctl sli_s2m_portx_ctl; + prt_cfg.u64 = cvmx_read_csr(CVMX_DPI_SLI_PRTX_CFG(pcie_port)); + prt_cfg.s.mps = MPS_CN6XXX; + prt_cfg.s.mrrs = MRRS_CN6XXX; + /* Max outstanding load request. */ + prt_cfg.s.molr = 32; + cvmx_write_csr(CVMX_DPI_SLI_PRTX_CFG(pcie_port), prt_cfg.u64); + + sli_s2m_portx_ctl.u64 = cvmx_read_csr(CVMX_PEXP_SLI_S2M_PORTX_CTL(pcie_port)); + sli_s2m_portx_ctl.s.mrrs = MRRS_CN6XXX; + cvmx_write_csr(CVMX_PEXP_SLI_S2M_PORTX_CTL(pcie_port), sli_s2m_portx_ctl.u64); + } + + /* ECRC Generation (PCIE*_CFG070[GE,CE]) */ + pciercx_cfg070.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG070(pcie_port)); + pciercx_cfg070.s.ge = 1; /* ECRC generation enable. */ + pciercx_cfg070.s.ce = 1; /* ECRC check enable. */ + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG070(pcie_port), pciercx_cfg070.u32); + + /* + * Access Enables (PCIE*_CFG001[MSAE,ME]) + * ME and MSAE should always be set. + * Interrupt Disable (PCIE*_CFG001[I_DIS]) + * System Error Message Enable (PCIE*_CFG001[SEE]) + */ + pciercx_cfg001.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG001(pcie_port)); + pciercx_cfg001.s.msae = 1; /* Memory space enable. */ + pciercx_cfg001.s.me = 1; /* Bus master enable. */ + pciercx_cfg001.s.i_dis = 1; /* INTx assertion disable. */ + pciercx_cfg001.s.see = 1; /* SERR# enable */ + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG001(pcie_port), pciercx_cfg001.u32); + + /* Advanced Error Recovery Message Enables */ + /* (PCIE*_CFG066,PCIE*_CFG067,PCIE*_CFG069) */ + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG066(pcie_port), 0); + /* Use CVMX_PCIERCX_CFG067 hardware default */ + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG069(pcie_port), 0); + + + /* Active State Power Management (PCIE*_CFG032[ASLPC]) */ + pciercx_cfg032.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG032(pcie_port)); + pciercx_cfg032.s.aslpc = 0; /* Active state Link PM control. */ + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG032(pcie_port), pciercx_cfg032.u32); + + /* + * Link Width Mode (PCIERCn_CFG452[LME]) - Set during + * cvmx_pcie_rc_initialize_link() + * + * Primary Bus Number (PCIERCn_CFG006[PBNUM]) + * + * We set the primary bus number to 1 so IDT bridges are + * happy. They don't like zero. + */ + pciercx_cfg006.u32 = 0; + pciercx_cfg006.s.pbnum = 1; + pciercx_cfg006.s.sbnum = 1; + pciercx_cfg006.s.subbnum = 1; + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG006(pcie_port), pciercx_cfg006.u32); + + + /* + * Memory-mapped I/O BAR (PCIERCn_CFG008) + * Most applications should disable the memory-mapped I/O BAR by + * setting PCIERCn_CFG008[ML_ADDR] < PCIERCn_CFG008[MB_ADDR] + */ + pciercx_cfg008.u32 = 0; + pciercx_cfg008.s.mb_addr = 0x100; + pciercx_cfg008.s.ml_addr = 0; + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG008(pcie_port), pciercx_cfg008.u32); + + + /* + * Prefetchable BAR (PCIERCn_CFG009,PCIERCn_CFG010,PCIERCn_CFG011) + * Most applications should disable the prefetchable BAR by setting + * PCIERCn_CFG011[UMEM_LIMIT],PCIERCn_CFG009[LMEM_LIMIT] < + * PCIERCn_CFG010[UMEM_BASE],PCIERCn_CFG009[LMEM_BASE] + */ + pciercx_cfg009.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG009(pcie_port)); + pciercx_cfg010.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG010(pcie_port)); + pciercx_cfg011.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG011(pcie_port)); + pciercx_cfg009.s.lmem_base = 0x100; + pciercx_cfg009.s.lmem_limit = 0; + pciercx_cfg010.s.umem_base = 0x100; + pciercx_cfg011.s.umem_limit = 0; + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG009(pcie_port), pciercx_cfg009.u32); + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG010(pcie_port), pciercx_cfg010.u32); + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG011(pcie_port), pciercx_cfg011.u32); + + /* + * System Error Interrupt Enables (PCIERCn_CFG035[SECEE,SEFEE,SENFEE]) + * PME Interrupt Enables (PCIERCn_CFG035[PMEIE]) + */ + pciercx_cfg035.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG035(pcie_port)); + pciercx_cfg035.s.secee = 1; /* System error on correctable error enable. */ + pciercx_cfg035.s.sefee = 1; /* System error on fatal error enable. */ + pciercx_cfg035.s.senfee = 1; /* System error on non-fatal error enable. */ + pciercx_cfg035.s.pmeie = 1; /* PME interrupt enable. */ + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG035(pcie_port), pciercx_cfg035.u32); + + /* + * Advanced Error Recovery Interrupt Enables + * (PCIERCn_CFG075[CERE,NFERE,FERE]) + */ + pciercx_cfg075.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG075(pcie_port)); + pciercx_cfg075.s.cere = 1; /* Correctable error reporting enable. */ + pciercx_cfg075.s.nfere = 1; /* Non-fatal error reporting enable. */ + pciercx_cfg075.s.fere = 1; /* Fatal error reporting enable. */ + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG075(pcie_port), pciercx_cfg075.u32); + + /* + * HP Interrupt Enables (PCIERCn_CFG034[HPINT_EN], + * PCIERCn_CFG034[DLLS_EN,CCINT_EN]) + */ + pciercx_cfg034.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG034(pcie_port)); + pciercx_cfg034.s.hpint_en = 1; /* Hot-plug interrupt enable. */ + pciercx_cfg034.s.dlls_en = 1; /* Data Link Layer state changed enable */ + pciercx_cfg034.s.ccint_en = 1; /* Command completed interrupt enable. */ + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG034(pcie_port), pciercx_cfg034.u32); +} + +/** + * Initialize a host mode PCIe gen 1 link. This function takes a PCIe + * port from reset to a link up state. Software can then begin + * configuring the rest of the link. + * + * @pcie_port: PCIe port to initialize + * + * Returns Zero on success + */ +static int __cvmx_pcie_rc_initialize_link_gen1(int pcie_port) +{ + uint64_t start_cycle; + union cvmx_pescx_ctl_status pescx_ctl_status; + union cvmx_pciercx_cfg452 pciercx_cfg452; + union cvmx_pciercx_cfg032 pciercx_cfg032; + union cvmx_pciercx_cfg448 pciercx_cfg448; + + /* Set the lane width */ + pciercx_cfg452.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG452(pcie_port)); + pescx_ctl_status.u64 = cvmx_read_csr(CVMX_PESCX_CTL_STATUS(pcie_port)); + if (pescx_ctl_status.s.qlm_cfg == 0) + /* We're in 8 lane (56XX) or 4 lane (54XX) mode */ + pciercx_cfg452.s.lme = 0xf; + else + /* We're in 4 lane (56XX) or 2 lane (52XX) mode */ + pciercx_cfg452.s.lme = 0x7; + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG452(pcie_port), pciercx_cfg452.u32); + + /* + * CN52XX pass 1.x has an errata where length mismatches on UR + * responses can cause bus errors on 64bit memory + * reads. Turning off length error checking fixes this. + */ + if (OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X)) { + union cvmx_pciercx_cfg455 pciercx_cfg455; + pciercx_cfg455.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG455(pcie_port)); + pciercx_cfg455.s.m_cpl_len_err = 1; + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG455(pcie_port), pciercx_cfg455.u32); + } + + /* Lane swap needs to be manually enabled for CN52XX */ + if (OCTEON_IS_MODEL(OCTEON_CN52XX) && (pcie_port == 1)) { + pescx_ctl_status.s.lane_swp = 1; + cvmx_write_csr(CVMX_PESCX_CTL_STATUS(pcie_port), pescx_ctl_status.u64); + } + + /* Bring up the link */ + pescx_ctl_status.u64 = cvmx_read_csr(CVMX_PESCX_CTL_STATUS(pcie_port)); + pescx_ctl_status.s.lnk_enb = 1; + cvmx_write_csr(CVMX_PESCX_CTL_STATUS(pcie_port), pescx_ctl_status.u64); + + /* + * CN52XX pass 1.0: Due to a bug in 2nd order CDR, it needs to + * be disabled. + */ + if (OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_0)) + __cvmx_helper_errata_qlm_disable_2nd_order_cdr(0); + + /* Wait for the link to come up */ + start_cycle = cvmx_get_cycle(); + do { + if (cvmx_get_cycle() - start_cycle > 2 * octeon_get_clock_rate()) { + cvmx_dprintf("PCIe: Port %d link timeout\n", pcie_port); + return -1; + } + cvmx_wait(10000); + pciercx_cfg032.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG032(pcie_port)); + } while (pciercx_cfg032.s.dlla == 0); + + /* Clear all pending errors */ + cvmx_write_csr(CVMX_PEXP_NPEI_INT_SUM, cvmx_read_csr(CVMX_PEXP_NPEI_INT_SUM)); + + /* + * Update the Replay Time Limit. Empirically, some PCIe + * devices take a little longer to respond than expected under + * load. As a workaround for this we configure the Replay Time + * Limit to the value expected for a 512 byte MPS instead of + * our actual 256 byte MPS. The numbers below are directly + * from the PCIe spec table 3-4. + */ + pciercx_cfg448.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG448(pcie_port)); + switch (pciercx_cfg032.s.nlw) { + case 1: /* 1 lane */ + pciercx_cfg448.s.rtl = 1677; + break; + case 2: /* 2 lanes */ + pciercx_cfg448.s.rtl = 867; + break; + case 4: /* 4 lanes */ + pciercx_cfg448.s.rtl = 462; + break; + case 8: /* 8 lanes */ + pciercx_cfg448.s.rtl = 258; + break; + } + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG448(pcie_port), pciercx_cfg448.u32); + + return 0; +} + +static void __cvmx_increment_ba(union cvmx_sli_mem_access_subidx *pmas) +{ + if (OCTEON_IS_MODEL(OCTEON_CN68XX)) + pmas->cn68xx.ba++; + else + pmas->cn63xx.ba++; +} + +/** + * Initialize a PCIe gen 1 port for use in host(RC) mode. It doesn't + * enumerate the bus. + * + * @pcie_port: PCIe port to initialize + * + * Returns Zero on success + */ +static int __cvmx_pcie_rc_initialize_gen1(int pcie_port) +{ + int i; + int base; + u64 addr_swizzle; + union cvmx_ciu_soft_prst ciu_soft_prst; + union cvmx_pescx_bist_status pescx_bist_status; + union cvmx_pescx_bist_status2 pescx_bist_status2; + union cvmx_npei_ctl_status npei_ctl_status; + union cvmx_npei_mem_access_ctl npei_mem_access_ctl; + union cvmx_npei_mem_access_subidx mem_access_subid; + union cvmx_npei_dbg_data npei_dbg_data; + union cvmx_pescx_ctl_status2 pescx_ctl_status2; + union cvmx_pciercx_cfg032 pciercx_cfg032; + union cvmx_npei_bar1_indexx bar1_index; + +retry: + /* + * Make sure we aren't trying to setup a target mode interface + * in host mode. + */ + npei_ctl_status.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_CTL_STATUS); + if ((pcie_port == 0) && !npei_ctl_status.s.host_mode) { + cvmx_dprintf("PCIe: Port %d in endpoint mode\n", pcie_port); + return -1; + } + + /* + * Make sure a CN52XX isn't trying to bring up port 1 when it + * is disabled. + */ + if (OCTEON_IS_MODEL(OCTEON_CN52XX)) { + npei_dbg_data.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_DBG_DATA); + if ((pcie_port == 1) && npei_dbg_data.cn52xx.qlm0_link_width) { + cvmx_dprintf("PCIe: ERROR: cvmx_pcie_rc_initialize() called on port1, but port1 is disabled\n"); + return -1; + } + } + + /* + * PCIe switch arbitration mode. '0' == fixed priority NPEI, + * PCIe0, then PCIe1. '1' == round robin. + */ + npei_ctl_status.s.arb = 1; + /* Allow up to 0x20 config retries */ + npei_ctl_status.s.cfg_rtry = 0x20; + /* + * CN52XX pass1.x has an errata where P0_NTAGS and P1_NTAGS + * don't reset. + */ + if (OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X)) { + npei_ctl_status.s.p0_ntags = 0x20; + npei_ctl_status.s.p1_ntags = 0x20; + } + cvmx_write_csr(CVMX_PEXP_NPEI_CTL_STATUS, npei_ctl_status.u64); + + /* Bring the PCIe out of reset */ + if (cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_EBH5200) { + /* + * The EBH5200 board swapped the PCIe reset lines on + * the board. As a workaround for this bug, we bring + * both PCIe ports out of reset at the same time + * instead of on separate calls. So for port 0, we + * bring both out of reset and do nothing on port 1 + */ + if (pcie_port == 0) { + ciu_soft_prst.u64 = cvmx_read_csr(CVMX_CIU_SOFT_PRST); + /* + * After a chip reset the PCIe will also be in + * reset. If it isn't, most likely someone is + * trying to init it again without a proper + * PCIe reset. + */ + if (ciu_soft_prst.s.soft_prst == 0) { + /* Reset the ports */ + ciu_soft_prst.s.soft_prst = 1; + cvmx_write_csr(CVMX_CIU_SOFT_PRST, ciu_soft_prst.u64); + ciu_soft_prst.u64 = cvmx_read_csr(CVMX_CIU_SOFT_PRST1); + ciu_soft_prst.s.soft_prst = 1; + cvmx_write_csr(CVMX_CIU_SOFT_PRST1, ciu_soft_prst.u64); + /* Wait until pcie resets the ports. */ + udelay(2000); + } + ciu_soft_prst.u64 = cvmx_read_csr(CVMX_CIU_SOFT_PRST1); + ciu_soft_prst.s.soft_prst = 0; + cvmx_write_csr(CVMX_CIU_SOFT_PRST1, ciu_soft_prst.u64); + ciu_soft_prst.u64 = cvmx_read_csr(CVMX_CIU_SOFT_PRST); + ciu_soft_prst.s.soft_prst = 0; + cvmx_write_csr(CVMX_CIU_SOFT_PRST, ciu_soft_prst.u64); + } + } else { + /* + * The normal case: The PCIe ports are completely + * separate and can be brought out of reset + * independently. + */ + if (pcie_port) + ciu_soft_prst.u64 = cvmx_read_csr(CVMX_CIU_SOFT_PRST1); + else + ciu_soft_prst.u64 = cvmx_read_csr(CVMX_CIU_SOFT_PRST); + /* + * After a chip reset the PCIe will also be in + * reset. If it isn't, most likely someone is trying + * to init it again without a proper PCIe reset. + */ + if (ciu_soft_prst.s.soft_prst == 0) { + /* Reset the port */ + ciu_soft_prst.s.soft_prst = 1; + if (pcie_port) + cvmx_write_csr(CVMX_CIU_SOFT_PRST1, ciu_soft_prst.u64); + else + cvmx_write_csr(CVMX_CIU_SOFT_PRST, ciu_soft_prst.u64); + /* Wait until pcie resets the ports. */ + udelay(2000); + } + if (pcie_port) { + ciu_soft_prst.u64 = cvmx_read_csr(CVMX_CIU_SOFT_PRST1); + ciu_soft_prst.s.soft_prst = 0; + cvmx_write_csr(CVMX_CIU_SOFT_PRST1, ciu_soft_prst.u64); + } else { + ciu_soft_prst.u64 = cvmx_read_csr(CVMX_CIU_SOFT_PRST); + ciu_soft_prst.s.soft_prst = 0; + cvmx_write_csr(CVMX_CIU_SOFT_PRST, ciu_soft_prst.u64); + } + } + + /* + * Wait for PCIe reset to complete. Due to errata PCIE-700, we + * don't poll PESCX_CTL_STATUS2[PCIERST], but simply wait a + * fixed number of cycles. + */ + cvmx_wait(400000); + + /* + * PESCX_BIST_STATUS2[PCLK_RUN] was missing on pass 1 of + * CN56XX and CN52XX, so we only probe it on newer chips + */ + if (!OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X) && !OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X)) { + /* Clear PCLK_RUN so we can check if the clock is running */ + pescx_ctl_status2.u64 = cvmx_read_csr(CVMX_PESCX_CTL_STATUS2(pcie_port)); + pescx_ctl_status2.s.pclk_run = 1; + cvmx_write_csr(CVMX_PESCX_CTL_STATUS2(pcie_port), pescx_ctl_status2.u64); + /* Now that we cleared PCLK_RUN, wait for it to be set + * again telling us the clock is running + */ + if (CVMX_WAIT_FOR_FIELD64(CVMX_PESCX_CTL_STATUS2(pcie_port), + union cvmx_pescx_ctl_status2, pclk_run, ==, 1, 10000)) { + cvmx_dprintf("PCIe: Port %d isn't clocked, skipping.\n", pcie_port); + return -1; + } + } + + /* + * Check and make sure PCIe came out of reset. If it doesn't + * the board probably hasn't wired the clocks up and the + * interface should be skipped. + */ + pescx_ctl_status2.u64 = cvmx_read_csr(CVMX_PESCX_CTL_STATUS2(pcie_port)); + if (pescx_ctl_status2.s.pcierst) { + cvmx_dprintf("PCIe: Port %d stuck in reset, skipping.\n", pcie_port); + return -1; + } + + /* + * Check BIST2 status. If any bits are set skip this + * interface. This is an attempt to catch PCIE-813 on pass 1 + * parts. + */ + pescx_bist_status2.u64 = cvmx_read_csr(CVMX_PESCX_BIST_STATUS2(pcie_port)); + if (pescx_bist_status2.u64) { + cvmx_dprintf("PCIe: Port %d BIST2 failed. Most likely this port isn't hooked up, skipping.\n", + pcie_port); + return -1; + } + + /* Check BIST status */ + pescx_bist_status.u64 = cvmx_read_csr(CVMX_PESCX_BIST_STATUS(pcie_port)); + if (pescx_bist_status.u64) + cvmx_dprintf("PCIe: BIST FAILED for port %d (0x%016llx)\n", + pcie_port, CAST64(pescx_bist_status.u64)); + + /* Initialize the config space CSRs */ + __cvmx_pcie_rc_initialize_config_space(pcie_port); + + /* Bring the link up */ + if (__cvmx_pcie_rc_initialize_link_gen1(pcie_port)) { + cvmx_dprintf("PCIe: Failed to initialize port %d, probably the slot is empty\n", + pcie_port); + return -1; + } + + /* Store merge control (NPEI_MEM_ACCESS_CTL[TIMER,MAX_WORD]) */ + npei_mem_access_ctl.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_MEM_ACCESS_CTL); + npei_mem_access_ctl.s.max_word = 0; /* Allow 16 words to combine */ + npei_mem_access_ctl.s.timer = 127; /* Wait up to 127 cycles for more data */ + cvmx_write_csr(CVMX_PEXP_NPEI_MEM_ACCESS_CTL, npei_mem_access_ctl.u64); + + /* Setup Mem access SubDIDs */ + mem_access_subid.u64 = 0; + mem_access_subid.s.port = pcie_port; /* Port the request is sent to. */ + mem_access_subid.s.nmerge = 1; /* Due to an errata on pass 1 chips, no merging is allowed. */ + mem_access_subid.s.esr = 1; /* Endian-swap for Reads. */ + mem_access_subid.s.esw = 1; /* Endian-swap for Writes. */ + mem_access_subid.s.nsr = 0; /* Enable Snooping for Reads. Octeon doesn't care, but devices might want this more conservative setting */ + mem_access_subid.s.nsw = 0; /* Enable Snoop for Writes. */ + mem_access_subid.s.ror = 0; /* Disable Relaxed Ordering for Reads. */ + mem_access_subid.s.row = 0; /* Disable Relaxed Ordering for Writes. */ + mem_access_subid.s.ba = 0; /* PCIe Adddress Bits <63:34>. */ + + /* + * Setup mem access 12-15 for port 0, 16-19 for port 1, + * supplying 36 bits of address space. + */ + for (i = 12 + pcie_port * 4; i < 16 + pcie_port * 4; i++) { + cvmx_write_csr(CVMX_PEXP_NPEI_MEM_ACCESS_SUBIDX(i), mem_access_subid.u64); + mem_access_subid.s.ba += 1; /* Set each SUBID to extend the addressable range */ + } + + /* + * Disable the peer to peer forwarding register. This must be + * setup by the OS after it enumerates the bus and assigns + * addresses to the PCIe busses. + */ + for (i = 0; i < 4; i++) { + cvmx_write_csr(CVMX_PESCX_P2P_BARX_START(i, pcie_port), -1); + cvmx_write_csr(CVMX_PESCX_P2P_BARX_END(i, pcie_port), -1); + } + + /* Set Octeon's BAR0 to decode 0-16KB. It overlaps with Bar2 */ + cvmx_write_csr(CVMX_PESCX_P2N_BAR0_START(pcie_port), 0); + + /* BAR1 follows BAR2 with a gap so it has the same address as for gen2. */ + cvmx_write_csr(CVMX_PESCX_P2N_BAR1_START(pcie_port), CVMX_PCIE_BAR1_RC_BASE); + + bar1_index.u32 = 0; + bar1_index.s.addr_idx = (CVMX_PCIE_BAR1_PHYS_BASE >> 22); + bar1_index.s.ca = 1; /* Not Cached */ + bar1_index.s.end_swp = 1; /* Endian Swap mode */ + bar1_index.s.addr_v = 1; /* Valid entry */ + + base = pcie_port ? 16 : 0; + + /* Big endian swizzle for 32-bit PEXP_NCB register. */ +#ifdef __MIPSEB__ + addr_swizzle = 4; +#else + addr_swizzle = 0; +#endif + for (i = 0; i < 16; i++) { + cvmx_write64_uint32((CVMX_PEXP_NPEI_BAR1_INDEXX(base) ^ addr_swizzle), + bar1_index.u32); + base++; + /* 256MB / 16 >> 22 == 4 */ + bar1_index.s.addr_idx += (((1ull << 28) / 16ull) >> 22); + } + + /* + * Set Octeon's BAR2 to decode 0-2^39. Bar0 and Bar1 take + * precedence where they overlap. It also overlaps with the + * device addresses, so make sure the peer to peer forwarding + * is set right. + */ + cvmx_write_csr(CVMX_PESCX_P2N_BAR2_START(pcie_port), 0); + + /* + * Setup BAR2 attributes + * + * Relaxed Ordering (NPEI_CTL_PORTn[PTLP_RO,CTLP_RO, WAIT_COM]) + * - PTLP_RO,CTLP_RO should normally be set (except for debug). + * - WAIT_COM=0 will likely work for all applications. + * + * Load completion relaxed ordering (NPEI_CTL_PORTn[WAITL_COM]). + */ + if (pcie_port) { + union cvmx_npei_ctl_port1 npei_ctl_port; + npei_ctl_port.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_CTL_PORT1); + npei_ctl_port.s.bar2_enb = 1; + npei_ctl_port.s.bar2_esx = 1; + npei_ctl_port.s.bar2_cax = 0; + npei_ctl_port.s.ptlp_ro = 1; + npei_ctl_port.s.ctlp_ro = 1; + npei_ctl_port.s.wait_com = 0; + npei_ctl_port.s.waitl_com = 0; + cvmx_write_csr(CVMX_PEXP_NPEI_CTL_PORT1, npei_ctl_port.u64); + } else { + union cvmx_npei_ctl_port0 npei_ctl_port; + npei_ctl_port.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_CTL_PORT0); + npei_ctl_port.s.bar2_enb = 1; + npei_ctl_port.s.bar2_esx = 1; + npei_ctl_port.s.bar2_cax = 0; + npei_ctl_port.s.ptlp_ro = 1; + npei_ctl_port.s.ctlp_ro = 1; + npei_ctl_port.s.wait_com = 0; + npei_ctl_port.s.waitl_com = 0; + cvmx_write_csr(CVMX_PEXP_NPEI_CTL_PORT0, npei_ctl_port.u64); + } + + /* + * Both pass 1 and pass 2 of CN52XX and CN56XX have an errata + * that causes TLP ordering to not be preserved after multiple + * PCIe port resets. This code detects this fault and corrects + * it by aligning the TLP counters properly. Another link + * reset is then performed. See PCIE-13340 + */ + if (OCTEON_IS_MODEL(OCTEON_CN56XX_PASS2_X) || + OCTEON_IS_MODEL(OCTEON_CN52XX_PASS2_X) || + OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X) || + OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X)) { + union cvmx_npei_dbg_data dbg_data; + int old_in_fif_p_count; + int in_fif_p_count; + int out_p_count; + int in_p_offset = (OCTEON_IS_MODEL(OCTEON_CN52XX_PASS1_X) || OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X)) ? 4 : 1; + int i; + + /* + * Choose a write address of 1MB. It should be + * harmless as all bars haven't been setup. + */ + uint64_t write_address = (cvmx_pcie_get_mem_base_address(pcie_port) + 0x100000) | (1ull<<63); + + /* + * Make sure at least in_p_offset have been executed before we try and + * read in_fif_p_count + */ + i = in_p_offset; + while (i--) { + cvmx_write64_uint32(write_address, 0); + cvmx_wait(10000); + } + + /* + * Read the IN_FIF_P_COUNT from the debug + * select. IN_FIF_P_COUNT can be unstable sometimes so + * read it twice with a write between the reads. This + * way we can tell the value is good as it will + * increment by one due to the write + */ + cvmx_write_csr(CVMX_PEXP_NPEI_DBG_SELECT, (pcie_port) ? 0xd7fc : 0xcffc); + cvmx_read_csr(CVMX_PEXP_NPEI_DBG_SELECT); + do { + dbg_data.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_DBG_DATA); + old_in_fif_p_count = dbg_data.s.data & 0xff; + cvmx_write64_uint32(write_address, 0); + cvmx_wait(10000); + dbg_data.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_DBG_DATA); + in_fif_p_count = dbg_data.s.data & 0xff; + } while (in_fif_p_count != ((old_in_fif_p_count+1) & 0xff)); + + /* Update in_fif_p_count for it's offset with respect to out_p_count */ + in_fif_p_count = (in_fif_p_count + in_p_offset) & 0xff; + + /* Read the OUT_P_COUNT from the debug select */ + cvmx_write_csr(CVMX_PEXP_NPEI_DBG_SELECT, (pcie_port) ? 0xd00f : 0xc80f); + cvmx_read_csr(CVMX_PEXP_NPEI_DBG_SELECT); + dbg_data.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_DBG_DATA); + out_p_count = (dbg_data.s.data>>1) & 0xff; + + /* Check that the two counters are aligned */ + if (out_p_count != in_fif_p_count) { + cvmx_dprintf("PCIe: Port %d aligning TLP counters as workaround to maintain ordering\n", pcie_port); + while (in_fif_p_count != 0) { + cvmx_write64_uint32(write_address, 0); + cvmx_wait(10000); + in_fif_p_count = (in_fif_p_count + 1) & 0xff; + } + /* + * The EBH5200 board swapped the PCIe reset + * lines on the board. This means we must + * bring both links down and up, which will + * cause the PCIe0 to need alignment + * again. Lots of messages will be displayed, + * but everything should work + */ + if ((cvmx_sysinfo_get()->board_type == CVMX_BOARD_TYPE_EBH5200) && + (pcie_port == 1)) + cvmx_pcie_rc_initialize(0); + /* Rety bringing this port up */ + goto retry; + } + } + + /* Display the link status */ + pciercx_cfg032.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG032(pcie_port)); + cvmx_dprintf("PCIe: Port %d link active, %d lanes\n", pcie_port, pciercx_cfg032.s.nlw); + + return 0; +} + +/** + * Initialize a host mode PCIe gen 2 link. This function takes a PCIe + * port from reset to a link up state. Software can then begin + * configuring the rest of the link. + * + * @pcie_port: PCIe port to initialize + * + * Return Zero on success. + */ +static int __cvmx_pcie_rc_initialize_link_gen2(int pcie_port) +{ + uint64_t start_cycle; + union cvmx_pemx_ctl_status pem_ctl_status; + union cvmx_pciercx_cfg032 pciercx_cfg032; + union cvmx_pciercx_cfg448 pciercx_cfg448; + + /* Bring up the link */ + pem_ctl_status.u64 = cvmx_read_csr(CVMX_PEMX_CTL_STATUS(pcie_port)); + pem_ctl_status.s.lnk_enb = 1; + cvmx_write_csr(CVMX_PEMX_CTL_STATUS(pcie_port), pem_ctl_status.u64); + + /* Wait for the link to come up */ + start_cycle = cvmx_get_cycle(); + do { + if (cvmx_get_cycle() - start_cycle > octeon_get_clock_rate()) + return -1; + cvmx_wait(10000); + pciercx_cfg032.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG032(pcie_port)); + } while ((pciercx_cfg032.s.dlla == 0) || (pciercx_cfg032.s.lt == 1)); + + /* + * Update the Replay Time Limit. Empirically, some PCIe + * devices take a little longer to respond than expected under + * load. As a workaround for this we configure the Replay Time + * Limit to the value expected for a 512 byte MPS instead of + * our actual 256 byte MPS. The numbers below are directly + * from the PCIe spec table 3-4 + */ + pciercx_cfg448.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG448(pcie_port)); + switch (pciercx_cfg032.s.nlw) { + case 1: /* 1 lane */ + pciercx_cfg448.s.rtl = 1677; + break; + case 2: /* 2 lanes */ + pciercx_cfg448.s.rtl = 867; + break; + case 4: /* 4 lanes */ + pciercx_cfg448.s.rtl = 462; + break; + case 8: /* 8 lanes */ + pciercx_cfg448.s.rtl = 258; + break; + } + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG448(pcie_port), pciercx_cfg448.u32); + + return 0; +} + + +/** + * Initialize a PCIe gen 2 port for use in host(RC) mode. It doesn't enumerate + * the bus. + * + * @pcie_port: PCIe port to initialize + * + * Returns Zero on success. + */ +static int __cvmx_pcie_rc_initialize_gen2(int pcie_port) +{ + int i; + union cvmx_ciu_soft_prst ciu_soft_prst; + union cvmx_mio_rst_ctlx mio_rst_ctl; + union cvmx_pemx_bar_ctl pemx_bar_ctl; + union cvmx_pemx_ctl_status pemx_ctl_status; + union cvmx_pemx_bist_status pemx_bist_status; + union cvmx_pemx_bist_status2 pemx_bist_status2; + union cvmx_pciercx_cfg032 pciercx_cfg032; + union cvmx_pciercx_cfg515 pciercx_cfg515; + union cvmx_sli_ctl_portx sli_ctl_portx; + union cvmx_sli_mem_access_ctl sli_mem_access_ctl; + union cvmx_sli_mem_access_subidx mem_access_subid; + union cvmx_sriox_status_reg sriox_status_reg; + union cvmx_pemx_bar1_indexx bar1_index; + + if (octeon_has_feature(OCTEON_FEATURE_SRIO)) { + /* Make sure this interface isn't SRIO */ + if (OCTEON_IS_MODEL(OCTEON_CN66XX)) { + /* + * The CN66XX requires reading the + * MIO_QLMX_CFG register to figure out the + * port type. + */ + union cvmx_mio_qlmx_cfg qlmx_cfg; + qlmx_cfg.u64 = cvmx_read_csr(CVMX_MIO_QLMX_CFG(pcie_port)); + + if (qlmx_cfg.s.qlm_spd == 15) { + pr_notice("PCIe: Port %d is disabled, skipping.\n", pcie_port); + return -1; + } + + switch (qlmx_cfg.s.qlm_spd) { + case 0x1: /* SRIO 1x4 short */ + case 0x3: /* SRIO 1x4 long */ + case 0x4: /* SRIO 2x2 short */ + case 0x6: /* SRIO 2x2 long */ + pr_notice("PCIe: Port %d is SRIO, skipping.\n", pcie_port); + return -1; + case 0x9: /* SGMII */ + pr_notice("PCIe: Port %d is SGMII, skipping.\n", pcie_port); + return -1; + case 0xb: /* XAUI */ + pr_notice("PCIe: Port %d is XAUI, skipping.\n", pcie_port); + return -1; + case 0x0: /* PCIE gen2 */ + case 0x8: /* PCIE gen2 (alias) */ + case 0x2: /* PCIE gen1 */ + case 0xa: /* PCIE gen1 (alias) */ + break; + default: + pr_notice("PCIe: Port %d is unknown, skipping.\n", pcie_port); + return -1; + } + } else { + sriox_status_reg.u64 = cvmx_read_csr(CVMX_SRIOX_STATUS_REG(pcie_port)); + if (sriox_status_reg.s.srio) { + pr_notice("PCIe: Port %d is SRIO, skipping.\n", pcie_port); + return -1; + } + } + } + +#if 0 + /* This code is so that the PCIe analyzer is able to see 63XX traffic */ + pr_notice("PCIE : init for pcie analyzer.\n"); + cvmx_helper_qlm_jtag_init(); + cvmx_helper_qlm_jtag_shift_zeros(pcie_port, 85); + cvmx_helper_qlm_jtag_shift(pcie_port, 1, 1); + cvmx_helper_qlm_jtag_shift_zeros(pcie_port, 300-86); + cvmx_helper_qlm_jtag_shift_zeros(pcie_port, 85); + cvmx_helper_qlm_jtag_shift(pcie_port, 1, 1); + cvmx_helper_qlm_jtag_shift_zeros(pcie_port, 300-86); + cvmx_helper_qlm_jtag_shift_zeros(pcie_port, 85); + cvmx_helper_qlm_jtag_shift(pcie_port, 1, 1); + cvmx_helper_qlm_jtag_shift_zeros(pcie_port, 300-86); + cvmx_helper_qlm_jtag_shift_zeros(pcie_port, 85); + cvmx_helper_qlm_jtag_shift(pcie_port, 1, 1); + cvmx_helper_qlm_jtag_shift_zeros(pcie_port, 300-86); + cvmx_helper_qlm_jtag_update(pcie_port); +#endif + + /* Make sure we aren't trying to setup a target mode interface in host mode */ + mio_rst_ctl.u64 = cvmx_read_csr(CVMX_MIO_RST_CTLX(pcie_port)); + if (!mio_rst_ctl.s.host_mode) { + pr_notice("PCIe: Port %d in endpoint mode.\n", pcie_port); + return -1; + } + + /* CN63XX Pass 1.0 errata G-14395 requires the QLM De-emphasis be programmed */ + if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_0)) { + if (pcie_port) { + union cvmx_ciu_qlm1 ciu_qlm; + ciu_qlm.u64 = cvmx_read_csr(CVMX_CIU_QLM1); + ciu_qlm.s.txbypass = 1; + ciu_qlm.s.txdeemph = 5; + ciu_qlm.s.txmargin = 0x17; + cvmx_write_csr(CVMX_CIU_QLM1, ciu_qlm.u64); + } else { + union cvmx_ciu_qlm0 ciu_qlm; + ciu_qlm.u64 = cvmx_read_csr(CVMX_CIU_QLM0); + ciu_qlm.s.txbypass = 1; + ciu_qlm.s.txdeemph = 5; + ciu_qlm.s.txmargin = 0x17; + cvmx_write_csr(CVMX_CIU_QLM0, ciu_qlm.u64); + } + } + /* Bring the PCIe out of reset */ + if (pcie_port) + ciu_soft_prst.u64 = cvmx_read_csr(CVMX_CIU_SOFT_PRST1); + else + ciu_soft_prst.u64 = cvmx_read_csr(CVMX_CIU_SOFT_PRST); + /* + * After a chip reset the PCIe will also be in reset. If it + * isn't, most likely someone is trying to init it again + * without a proper PCIe reset + */ + if (ciu_soft_prst.s.soft_prst == 0) { + /* Reset the port */ + ciu_soft_prst.s.soft_prst = 1; + if (pcie_port) + cvmx_write_csr(CVMX_CIU_SOFT_PRST1, ciu_soft_prst.u64); + else + cvmx_write_csr(CVMX_CIU_SOFT_PRST, ciu_soft_prst.u64); + /* Wait until pcie resets the ports. */ + udelay(2000); + } + if (pcie_port) { + ciu_soft_prst.u64 = cvmx_read_csr(CVMX_CIU_SOFT_PRST1); + ciu_soft_prst.s.soft_prst = 0; + cvmx_write_csr(CVMX_CIU_SOFT_PRST1, ciu_soft_prst.u64); + } else { + ciu_soft_prst.u64 = cvmx_read_csr(CVMX_CIU_SOFT_PRST); + ciu_soft_prst.s.soft_prst = 0; + cvmx_write_csr(CVMX_CIU_SOFT_PRST, ciu_soft_prst.u64); + } + + /* Wait for PCIe reset to complete */ + udelay(1000); + + /* + * Check and make sure PCIe came out of reset. If it doesn't + * the board probably hasn't wired the clocks up and the + * interface should be skipped. + */ + if (CVMX_WAIT_FOR_FIELD64(CVMX_MIO_RST_CTLX(pcie_port), union cvmx_mio_rst_ctlx, rst_done, ==, 1, 10000)) { + pr_notice("PCIe: Port %d stuck in reset, skipping.\n", pcie_port); + return -1; + } + + /* Check BIST status */ + pemx_bist_status.u64 = cvmx_read_csr(CVMX_PEMX_BIST_STATUS(pcie_port)); + if (pemx_bist_status.u64) + pr_notice("PCIe: BIST FAILED for port %d (0x%016llx)\n", pcie_port, CAST64(pemx_bist_status.u64)); + pemx_bist_status2.u64 = cvmx_read_csr(CVMX_PEMX_BIST_STATUS2(pcie_port)); + /* Errata PCIE-14766 may cause the lower 6 bits to be randomly set on CN63XXp1 */ + if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X)) + pemx_bist_status2.u64 &= ~0x3full; + if (pemx_bist_status2.u64) + pr_notice("PCIe: BIST2 FAILED for port %d (0x%016llx)\n", pcie_port, CAST64(pemx_bist_status2.u64)); + + /* Initialize the config space CSRs */ + __cvmx_pcie_rc_initialize_config_space(pcie_port); + + /* Enable gen2 speed selection */ + pciercx_cfg515.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG515(pcie_port)); + pciercx_cfg515.s.dsc = 1; + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG515(pcie_port), pciercx_cfg515.u32); + + /* Bring the link up */ + if (__cvmx_pcie_rc_initialize_link_gen2(pcie_port)) { + /* + * Some gen1 devices don't handle the gen 2 training + * correctly. Disable gen2 and try again with only + * gen1 + */ + union cvmx_pciercx_cfg031 pciercx_cfg031; + pciercx_cfg031.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG031(pcie_port)); + pciercx_cfg031.s.mls = 1; + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG031(pcie_port), pciercx_cfg031.u32); + if (__cvmx_pcie_rc_initialize_link_gen2(pcie_port)) { + pr_notice("PCIe: Link timeout on port %d, probably the slot is empty\n", pcie_port); + return -1; + } + } + + /* Store merge control (SLI_MEM_ACCESS_CTL[TIMER,MAX_WORD]) */ + sli_mem_access_ctl.u64 = cvmx_read_csr(CVMX_PEXP_SLI_MEM_ACCESS_CTL); + sli_mem_access_ctl.s.max_word = 0; /* Allow 16 words to combine */ + sli_mem_access_ctl.s.timer = 127; /* Wait up to 127 cycles for more data */ + cvmx_write_csr(CVMX_PEXP_SLI_MEM_ACCESS_CTL, sli_mem_access_ctl.u64); + + /* Setup Mem access SubDIDs */ + mem_access_subid.u64 = 0; + mem_access_subid.s.port = pcie_port; /* Port the request is sent to. */ + mem_access_subid.s.nmerge = 0; /* Allow merging as it works on CN6XXX. */ + mem_access_subid.s.esr = 1; /* Endian-swap for Reads. */ + mem_access_subid.s.esw = 1; /* Endian-swap for Writes. */ + mem_access_subid.s.wtype = 0; /* "No snoop" and "Relaxed ordering" are not set */ + mem_access_subid.s.rtype = 0; /* "No snoop" and "Relaxed ordering" are not set */ + /* PCIe Adddress Bits <63:34>. */ + if (OCTEON_IS_MODEL(OCTEON_CN68XX)) + mem_access_subid.cn68xx.ba = 0; + else + mem_access_subid.cn63xx.ba = 0; + + /* + * Setup mem access 12-15 for port 0, 16-19 for port 1, + * supplying 36 bits of address space. + */ + for (i = 12 + pcie_port * 4; i < 16 + pcie_port * 4; i++) { + cvmx_write_csr(CVMX_PEXP_SLI_MEM_ACCESS_SUBIDX(i), mem_access_subid.u64); + /* Set each SUBID to extend the addressable range */ + __cvmx_increment_ba(&mem_access_subid); + } + + /* + * Disable the peer to peer forwarding register. This must be + * setup by the OS after it enumerates the bus and assigns + * addresses to the PCIe busses. + */ + for (i = 0; i < 4; i++) { + cvmx_write_csr(CVMX_PEMX_P2P_BARX_START(i, pcie_port), -1); + cvmx_write_csr(CVMX_PEMX_P2P_BARX_END(i, pcie_port), -1); + } + + /* Set Octeon's BAR0 to decode 0-16KB. It overlaps with Bar2 */ + cvmx_write_csr(CVMX_PEMX_P2N_BAR0_START(pcie_port), 0); + + /* + * Set Octeon's BAR2 to decode 0-2^41. Bar0 and Bar1 take + * precedence where they overlap. It also overlaps with the + * device addresses, so make sure the peer to peer forwarding + * is set right. + */ + cvmx_write_csr(CVMX_PEMX_P2N_BAR2_START(pcie_port), 0); + + /* + * Setup BAR2 attributes + * Relaxed Ordering (NPEI_CTL_PORTn[PTLP_RO,CTLP_RO, WAIT_COM]) + * - PTLP_RO,CTLP_RO should normally be set (except for debug). + * - WAIT_COM=0 will likely work for all applications. + * Load completion relaxed ordering (NPEI_CTL_PORTn[WAITL_COM]) + */ + pemx_bar_ctl.u64 = cvmx_read_csr(CVMX_PEMX_BAR_CTL(pcie_port)); + pemx_bar_ctl.s.bar1_siz = 3; /* 256MB BAR1*/ + pemx_bar_ctl.s.bar2_enb = 1; + pemx_bar_ctl.s.bar2_esx = 1; + pemx_bar_ctl.s.bar2_cax = 0; + cvmx_write_csr(CVMX_PEMX_BAR_CTL(pcie_port), pemx_bar_ctl.u64); + sli_ctl_portx.u64 = cvmx_read_csr(CVMX_PEXP_SLI_CTL_PORTX(pcie_port)); + sli_ctl_portx.s.ptlp_ro = 1; + sli_ctl_portx.s.ctlp_ro = 1; + sli_ctl_portx.s.wait_com = 0; + sli_ctl_portx.s.waitl_com = 0; + cvmx_write_csr(CVMX_PEXP_SLI_CTL_PORTX(pcie_port), sli_ctl_portx.u64); + + /* BAR1 follows BAR2 */ + cvmx_write_csr(CVMX_PEMX_P2N_BAR1_START(pcie_port), CVMX_PCIE_BAR1_RC_BASE); + + bar1_index.u64 = 0; + bar1_index.s.addr_idx = (CVMX_PCIE_BAR1_PHYS_BASE >> 22); + bar1_index.s.ca = 1; /* Not Cached */ + bar1_index.s.end_swp = 1; /* Endian Swap mode */ + bar1_index.s.addr_v = 1; /* Valid entry */ + + for (i = 0; i < 16; i++) { + cvmx_write_csr(CVMX_PEMX_BAR1_INDEXX(i, pcie_port), bar1_index.u64); + /* 256MB / 16 >> 22 == 4 */ + bar1_index.s.addr_idx += (((1ull << 28) / 16ull) >> 22); + } + + /* + * Allow config retries for 250ms. Count is based off the 5Ghz + * SERDES clock. + */ + pemx_ctl_status.u64 = cvmx_read_csr(CVMX_PEMX_CTL_STATUS(pcie_port)); + pemx_ctl_status.s.cfg_rtry = 250 * 5000000 / 0x10000; + cvmx_write_csr(CVMX_PEMX_CTL_STATUS(pcie_port), pemx_ctl_status.u64); + + /* Display the link status */ + pciercx_cfg032.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG032(pcie_port)); + pr_notice("PCIe: Port %d link active, %d lanes, speed gen%d\n", pcie_port, pciercx_cfg032.s.nlw, pciercx_cfg032.s.ls); + + return 0; +} + +/** + * Initialize a PCIe port for use in host(RC) mode. It doesn't enumerate the bus. + * + * @pcie_port: PCIe port to initialize + * + * Returns Zero on success + */ +static int cvmx_pcie_rc_initialize(int pcie_port) +{ + int result; + if (octeon_has_feature(OCTEON_FEATURE_NPEI)) + result = __cvmx_pcie_rc_initialize_gen1(pcie_port); + else + result = __cvmx_pcie_rc_initialize_gen2(pcie_port); + return result; +} + +/* Above was cvmx-pcie.c, below original pcie.c */ + +/** + * Map a PCI device to the appropriate interrupt line + * + * @dev: The Linux PCI device structure for the device to map + * @slot: The slot number for this device on __BUS 0__. Linux + * enumerates through all the bridges and figures out the + * slot on Bus 0 where this device eventually hooks to. + * @pin: The PCI interrupt pin read from the device, then swizzled + * as it goes through each bridge. + * Returns Interrupt number for the device + */ +int __init octeon_pcie_pcibios_map_irq(const struct pci_dev *dev, + u8 slot, u8 pin) +{ + /* + * The EBH5600 board with the PCI to PCIe bridge mistakenly + * wires the first slot for both device id 2 and interrupt + * A. According to the PCI spec, device id 2 should be C. The + * following kludge attempts to fix this. + */ + if (strstr(octeon_board_type_string(), "EBH5600") && + dev->bus && dev->bus->parent) { + /* + * Iterate all the way up the device chain and find + * the root bus. + */ + while (dev->bus && dev->bus->parent) + dev = to_pci_dev(dev->bus->bridge); + /* + * If the root bus is number 0 and the PEX 8114 is the + * root, assume we are behind the miswired bus. We + * need to correct the swizzle level by two. Yuck. + */ + if ((dev->bus->number == 1) && + (dev->vendor == 0x10b5) && (dev->device == 0x8114)) { + /* + * The pin field is one based, not zero. We + * need to swizzle it by minus two. + */ + pin = ((pin - 3) & 3) + 1; + } + } + /* + * The -1 is because pin starts with one, not zero. It might + * be that this equation needs to include the slot number, but + * I don't have hardware to check that against. + */ + return pin - 1 + OCTEON_IRQ_PCI_INT0; +} + +static void set_cfg_read_retry(u32 retry_cnt) +{ + union cvmx_pemx_ctl_status pemx_ctl; + pemx_ctl.u64 = cvmx_read_csr(CVMX_PEMX_CTL_STATUS(1)); + pemx_ctl.s.cfg_rtry = retry_cnt; + cvmx_write_csr(CVMX_PEMX_CTL_STATUS(1), pemx_ctl.u64); +} + + +static u32 disable_cfg_read_retry(void) +{ + u32 retry_cnt; + + union cvmx_pemx_ctl_status pemx_ctl; + pemx_ctl.u64 = cvmx_read_csr(CVMX_PEMX_CTL_STATUS(1)); + retry_cnt = pemx_ctl.s.cfg_rtry; + pemx_ctl.s.cfg_rtry = 0; + cvmx_write_csr(CVMX_PEMX_CTL_STATUS(1), pemx_ctl.u64); + return retry_cnt; +} + +static int is_cfg_retry(void) +{ + union cvmx_pemx_int_sum pemx_int_sum; + pemx_int_sum.u64 = cvmx_read_csr(CVMX_PEMX_INT_SUM(1)); + if (pemx_int_sum.s.crs_dr) + return 1; + return 0; +} + +/* + * Read a value from configuration space + * + */ +static int octeon_pcie_read_config(unsigned int pcie_port, struct pci_bus *bus, + unsigned int devfn, int reg, int size, + u32 *val) +{ + union octeon_cvmemctl cvmmemctl; + union octeon_cvmemctl cvmmemctl_save; + int bus_number = bus->number; + int cfg_retry = 0; + int retry_cnt = 0; + int max_retry_cnt = 10; + u32 cfg_retry_cnt = 0; + + cvmmemctl_save.u64 = 0; + BUG_ON(pcie_port >= ARRAY_SIZE(enable_pcie_bus_num_war)); + /* + * For the top level bus make sure our hardware bus number + * matches the software one + */ + if (bus->parent == NULL) { + if (enable_pcie_bus_num_war[pcie_port]) + bus_number = 0; + else { + union cvmx_pciercx_cfg006 pciercx_cfg006; + pciercx_cfg006.u32 = cvmx_pcie_cfgx_read(pcie_port, + CVMX_PCIERCX_CFG006(pcie_port)); + if (pciercx_cfg006.s.pbnum != bus_number) { + pciercx_cfg006.s.pbnum = bus_number; + pciercx_cfg006.s.sbnum = bus_number; + pciercx_cfg006.s.subbnum = bus_number; + cvmx_pcie_cfgx_write(pcie_port, + CVMX_PCIERCX_CFG006(pcie_port), + pciercx_cfg006.u32); + } + } + } + + /* + * PCIe only has a single device connected to Octeon. It is + * always device ID 0. Don't bother doing reads for other + * device IDs on the first segment. + */ + if ((bus->parent == NULL) && (devfn >> 3 != 0)) + return PCIBIOS_FUNC_NOT_SUPPORTED; + + /* + * The following is a workaround for the CN57XX, CN56XX, + * CN55XX, and CN54XX errata with PCIe config reads from non + * existent devices. These chips will hang the PCIe link if a + * config read is performed that causes a UR response. + */ + if (OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1) || + OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_1)) { + /* + * For our EBH5600 board, port 0 has a bridge with two + * PCI-X slots. We need a new special checks to make + * sure we only probe valid stuff. The PCIe->PCI-X + * bridge only respondes to device ID 0, function + * 0-1 + */ + if ((bus->parent == NULL) && (devfn >= 2)) + return PCIBIOS_FUNC_NOT_SUPPORTED; + /* + * The PCI-X slots are device ID 2,3. Choose one of + * the below "if" blocks based on what is plugged into + * the board. + */ +#if 1 + /* Use this option if you aren't using either slot */ + if (bus_number == 2) + return PCIBIOS_FUNC_NOT_SUPPORTED; +#elif 0 + /* + * Use this option if you are using the first slot but + * not the second. + */ + if ((bus_number == 2) && (devfn >> 3 != 2)) + return PCIBIOS_FUNC_NOT_SUPPORTED; +#elif 0 + /* + * Use this option if you are using the second slot + * but not the first. + */ + if ((bus_number == 2) && (devfn >> 3 != 3)) + return PCIBIOS_FUNC_NOT_SUPPORTED; +#elif 0 + /* Use this opion if you are using both slots */ + if ((bus_number == 2) && + !((devfn == (2 << 3)) || (devfn == (3 << 3)))) + return PCIBIOS_FUNC_NOT_SUPPORTED; +#endif + + /* The following #if gives a more complicated example. This is + the required checks for running a Nitrox CN16XX-NHBX in the + slot of the EBH5600. This card has a PLX PCIe bridge with + four Nitrox PLX parts behind it */ +#if 0 + /* PLX bridge with 4 ports */ + if ((bus_number == 4) && + !((devfn >> 3 >= 1) && (devfn >> 3 <= 4))) + return PCIBIOS_FUNC_NOT_SUPPORTED; + /* Nitrox behind PLX 1 */ + if ((bus_number == 5) && (devfn >> 3 != 0)) + return PCIBIOS_FUNC_NOT_SUPPORTED; + /* Nitrox behind PLX 2 */ + if ((bus_number == 6) && (devfn >> 3 != 0)) + return PCIBIOS_FUNC_NOT_SUPPORTED; + /* Nitrox behind PLX 3 */ + if ((bus_number == 7) && (devfn >> 3 != 0)) + return PCIBIOS_FUNC_NOT_SUPPORTED; + /* Nitrox behind PLX 4 */ + if ((bus_number == 8) && (devfn >> 3 != 0)) + return PCIBIOS_FUNC_NOT_SUPPORTED; +#endif + + /* + * Shorten the DID timeout so bus errors for PCIe + * config reads from non existent devices happen + * faster. This allows us to continue booting even if + * the above "if" checks are wrong. Once one of these + * errors happens, the PCIe port is dead. + */ + cvmmemctl_save.u64 = __read_64bit_c0_register($11, 7); + cvmmemctl.u64 = cvmmemctl_save.u64; + cvmmemctl.s.didtto = 2; + __write_64bit_c0_register($11, 7, cvmmemctl.u64); + } + + if ((OCTEON_IS_MODEL(OCTEON_CN63XX)) && (enable_pcie_14459_war)) + cfg_retry_cnt = disable_cfg_read_retry(); + + pr_debug("pcie_cfg_rd port=%d b=%d devfn=0x%03x reg=0x%03x" + " size=%d ", pcie_port, bus_number, devfn, reg, size); + do { + switch (size) { + case 4: + *val = cvmx_pcie_config_read32(pcie_port, bus_number, + devfn >> 3, devfn & 0x7, reg); + break; + case 2: + *val = cvmx_pcie_config_read16(pcie_port, bus_number, + devfn >> 3, devfn & 0x7, reg); + break; + case 1: + *val = cvmx_pcie_config_read8(pcie_port, bus_number, + devfn >> 3, devfn & 0x7, reg); + break; + default: + if (OCTEON_IS_MODEL(OCTEON_CN63XX)) + set_cfg_read_retry(cfg_retry_cnt); + return PCIBIOS_FUNC_NOT_SUPPORTED; + } + if ((OCTEON_IS_MODEL(OCTEON_CN63XX)) && + (enable_pcie_14459_war)) { + cfg_retry = is_cfg_retry(); + retry_cnt++; + if (retry_cnt > max_retry_cnt) { + pr_err(" pcie cfg_read retries failed. retry_cnt=%d\n", + retry_cnt); + cfg_retry = 0; + } + } + } while (cfg_retry); + + if ((OCTEON_IS_MODEL(OCTEON_CN63XX)) && (enable_pcie_14459_war)) + set_cfg_read_retry(cfg_retry_cnt); + pr_debug("val=%08x : tries=%02d\n", *val, retry_cnt); + if (OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1) || + OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_1)) + write_c0_cvmmemctl(cvmmemctl_save.u64); + return PCIBIOS_SUCCESSFUL; +} + +static int octeon_pcie0_read_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 *val) +{ + return octeon_pcie_read_config(0, bus, devfn, reg, size, val); +} + +static int octeon_pcie1_read_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 *val) +{ + return octeon_pcie_read_config(1, bus, devfn, reg, size, val); +} + +static int octeon_dummy_read_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 *val) +{ + return PCIBIOS_FUNC_NOT_SUPPORTED; +} + +/* + * Write a value to PCI configuration space + */ +static int octeon_pcie_write_config(unsigned int pcie_port, struct pci_bus *bus, + unsigned int devfn, int reg, + int size, u32 val) +{ + int bus_number = bus->number; + + BUG_ON(pcie_port >= ARRAY_SIZE(enable_pcie_bus_num_war)); + + if ((bus->parent == NULL) && (enable_pcie_bus_num_war[pcie_port])) + bus_number = 0; + + pr_debug("pcie_cfg_wr port=%d b=%d devfn=0x%03x" + " reg=0x%03x size=%d val=%08x\n", pcie_port, bus_number, devfn, + reg, size, val); + + + switch (size) { + case 4: + cvmx_pcie_config_write32(pcie_port, bus_number, devfn >> 3, + devfn & 0x7, reg, val); + break; + case 2: + cvmx_pcie_config_write16(pcie_port, bus_number, devfn >> 3, + devfn & 0x7, reg, val); + break; + case 1: + cvmx_pcie_config_write8(pcie_port, bus_number, devfn >> 3, + devfn & 0x7, reg, val); + break; + default: + return PCIBIOS_FUNC_NOT_SUPPORTED; + } +#if PCI_CONFIG_SPACE_DELAY + /* + * Delay on writes so that devices have time to come up. Some + * bridges need this to allow time for the secondary busses to + * work + */ + udelay(PCI_CONFIG_SPACE_DELAY); +#endif + return PCIBIOS_SUCCESSFUL; +} + +static int octeon_pcie0_write_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 val) +{ + return octeon_pcie_write_config(0, bus, devfn, reg, size, val); +} + +static int octeon_pcie1_write_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 val) +{ + return octeon_pcie_write_config(1, bus, devfn, reg, size, val); +} + +static int octeon_dummy_write_config(struct pci_bus *bus, unsigned int devfn, + int reg, int size, u32 val) +{ + return PCIBIOS_FUNC_NOT_SUPPORTED; +} + +static struct pci_ops octeon_pcie0_ops = { + octeon_pcie0_read_config, + octeon_pcie0_write_config, +}; + +static struct resource octeon_pcie0_mem_resource = { + .name = "Octeon PCIe0 MEM", + .flags = IORESOURCE_MEM, +}; + +static struct resource octeon_pcie0_io_resource = { + .name = "Octeon PCIe0 IO", + .flags = IORESOURCE_IO, +}; + +static struct pci_controller octeon_pcie0_controller = { + .pci_ops = &octeon_pcie0_ops, + .mem_resource = &octeon_pcie0_mem_resource, + .io_resource = &octeon_pcie0_io_resource, +}; + +static struct pci_ops octeon_pcie1_ops = { + octeon_pcie1_read_config, + octeon_pcie1_write_config, +}; + +static struct resource octeon_pcie1_mem_resource = { + .name = "Octeon PCIe1 MEM", + .flags = IORESOURCE_MEM, +}; + +static struct resource octeon_pcie1_io_resource = { + .name = "Octeon PCIe1 IO", + .flags = IORESOURCE_IO, +}; + +static struct pci_controller octeon_pcie1_controller = { + .pci_ops = &octeon_pcie1_ops, + .mem_resource = &octeon_pcie1_mem_resource, + .io_resource = &octeon_pcie1_io_resource, +}; + +static struct pci_ops octeon_dummy_ops = { + octeon_dummy_read_config, + octeon_dummy_write_config, +}; + +static struct resource octeon_dummy_mem_resource = { + .name = "Virtual PCIe MEM", + .flags = IORESOURCE_MEM, +}; + +static struct resource octeon_dummy_io_resource = { + .name = "Virtual PCIe IO", + .flags = IORESOURCE_IO, +}; + +static struct pci_controller octeon_dummy_controller = { + .pci_ops = &octeon_dummy_ops, + .mem_resource = &octeon_dummy_mem_resource, + .io_resource = &octeon_dummy_io_resource, +}; + +static int device_needs_bus_num_war(uint32_t deviceid) +{ +#define IDT_VENDOR_ID 0x111d + + if ((deviceid & 0xffff) == IDT_VENDOR_ID) + return 1; + return 0; +} + +/** + * Initialize the Octeon PCIe controllers + * + * Returns + */ +static int __init octeon_pcie_setup(void) +{ + int result; + int host_mode; + int srio_war15205 = 0, port; + union cvmx_sli_ctl_portx sli_ctl_portx; + union cvmx_sriox_status_reg sriox_status_reg; + + /* These chips don't have PCIe */ + if (!octeon_has_feature(OCTEON_FEATURE_PCIE)) + return 0; + + /* No PCIe simulation */ + if (octeon_is_simulation()) + return 0; + + /* Disable PCI if instructed on the command line */ + if (pcie_disable) + return 0; + + /* Point pcibios_map_irq() to the PCIe version of it */ + octeon_pcibios_map_irq = octeon_pcie_pcibios_map_irq; + + /* + * PCIe I/O range. It is based on port 0 but includes up until + * port 1's end. + */ + set_io_port_base(CVMX_ADD_IO_SEG(cvmx_pcie_get_io_base_address(0))); + ioport_resource.start = 0; + ioport_resource.end = + cvmx_pcie_get_io_base_address(1) - + cvmx_pcie_get_io_base_address(0) + cvmx_pcie_get_io_size(1) - 1; + + /* + * Create a dummy PCIe controller to swallow up bus 0. IDT bridges + * don't work if the primary bus number is zero. Here we add a fake + * PCIe controller that the kernel will give bus 0. This allows + * us to not change the normal kernel bus enumeration + */ + octeon_dummy_controller.io_map_base = -1; + octeon_dummy_controller.mem_resource->start = (1ull<<48); + octeon_dummy_controller.mem_resource->end = (1ull<<48); + register_pci_controller(&octeon_dummy_controller); + + if (octeon_has_feature(OCTEON_FEATURE_NPEI)) { + union cvmx_npei_ctl_status npei_ctl_status; + npei_ctl_status.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_CTL_STATUS); + host_mode = npei_ctl_status.s.host_mode; + octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_PCIE; + } else { + union cvmx_mio_rst_ctlx mio_rst_ctl; + mio_rst_ctl.u64 = cvmx_read_csr(CVMX_MIO_RST_CTLX(0)); + host_mode = mio_rst_ctl.s.host_mode; + octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_PCIE2; + } + + if (host_mode) { + pr_notice("PCIe: Initializing port 0\n"); + /* CN63XX pass 1_x/2.0 errata PCIe-15205 */ + if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X) || + OCTEON_IS_MODEL(OCTEON_CN63XX_PASS2_0)) { + sriox_status_reg.u64 = cvmx_read_csr(CVMX_SRIOX_STATUS_REG(0)); + if (sriox_status_reg.s.srio) { + srio_war15205 += 1; /* Port is SRIO */ + port = 0; + } + } + result = cvmx_pcie_rc_initialize(0); + if (result == 0) { + uint32_t device0; + /* Memory offsets are physical addresses */ + octeon_pcie0_controller.mem_offset = + cvmx_pcie_get_mem_base_address(0); + /* IO offsets are Mips virtual addresses */ + octeon_pcie0_controller.io_map_base = + CVMX_ADD_IO_SEG(cvmx_pcie_get_io_base_address + (0)); + octeon_pcie0_controller.io_offset = 0; + /* + * To keep things similar to PCI, we start + * device addresses at the same place as PCI + * uisng big bar support. This normally + * translates to 4GB-256MB, which is the same + * as most x86 PCs. + */ + octeon_pcie0_controller.mem_resource->start = + cvmx_pcie_get_mem_base_address(0) + + (4ul << 30) - (OCTEON_PCI_BAR1_HOLE_SIZE << 20); + octeon_pcie0_controller.mem_resource->end = + cvmx_pcie_get_mem_base_address(0) + + cvmx_pcie_get_mem_size(0) - 1; + /* + * Ports must be above 16KB for the ISA bus + * filtering in the PCI-X to PCI bridge. + */ + octeon_pcie0_controller.io_resource->start = 4 << 10; + octeon_pcie0_controller.io_resource->end = + cvmx_pcie_get_io_size(0) - 1; + msleep(100); /* Some devices need extra time */ + register_pci_controller(&octeon_pcie0_controller); + device0 = cvmx_pcie_config_read32(0, 0, 0, 0, 0); + enable_pcie_bus_num_war[0] = + device_needs_bus_num_war(device0); + } + } else { + pr_notice("PCIe: Port 0 in endpoint mode, skipping.\n"); + /* CN63XX pass 1_x/2.0 errata PCIe-15205 */ + if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X) || + OCTEON_IS_MODEL(OCTEON_CN63XX_PASS2_0)) { + srio_war15205 += 1; + port = 0; + } + } + + if (octeon_has_feature(OCTEON_FEATURE_NPEI)) { + host_mode = 1; + /* Skip the 2nd port on CN52XX if port 0 is in 4 lane mode */ + if (OCTEON_IS_MODEL(OCTEON_CN52XX)) { + union cvmx_npei_dbg_data dbg_data; + dbg_data.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_DBG_DATA); + if (dbg_data.cn52xx.qlm0_link_width) + host_mode = 0; + } + } else { + union cvmx_mio_rst_ctlx mio_rst_ctl; + mio_rst_ctl.u64 = cvmx_read_csr(CVMX_MIO_RST_CTLX(1)); + host_mode = mio_rst_ctl.s.host_mode; + } + + if (host_mode) { + pr_notice("PCIe: Initializing port 1\n"); + /* CN63XX pass 1_x/2.0 errata PCIe-15205 */ + if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X) || + OCTEON_IS_MODEL(OCTEON_CN63XX_PASS2_0)) { + sriox_status_reg.u64 = cvmx_read_csr(CVMX_SRIOX_STATUS_REG(1)); + if (sriox_status_reg.s.srio) { + srio_war15205 += 1; /* Port is SRIO */ + port = 1; + } + } + result = cvmx_pcie_rc_initialize(1); + if (result == 0) { + uint32_t device0; + /* Memory offsets are physical addresses */ + octeon_pcie1_controller.mem_offset = + cvmx_pcie_get_mem_base_address(1); + /* + * To calculate the address for accessing the 2nd PCIe device, + * either 'io_map_base' (pci_iomap()), or 'mips_io_port_base' + * (ioport_map()) value is added to + * pci_resource_start(dev,bar)). The 'mips_io_port_base' is set + * only once based on first PCIe. Also changing 'io_map_base' + * based on first slot's value so that both the routines will + * work properly. + */ + octeon_pcie1_controller.io_map_base = + CVMX_ADD_IO_SEG(cvmx_pcie_get_io_base_address(0)); + /* IO offsets are Mips virtual addresses */ + octeon_pcie1_controller.io_offset = + cvmx_pcie_get_io_base_address(1) - + cvmx_pcie_get_io_base_address(0); + /* + * To keep things similar to PCI, we start device + * addresses at the same place as PCI uisng big bar + * support. This normally translates to 4GB-256MB, + * which is the same as most x86 PCs. + */ + octeon_pcie1_controller.mem_resource->start = + cvmx_pcie_get_mem_base_address(1) + (4ul << 30) - + (OCTEON_PCI_BAR1_HOLE_SIZE << 20); + octeon_pcie1_controller.mem_resource->end = + cvmx_pcie_get_mem_base_address(1) + + cvmx_pcie_get_mem_size(1) - 1; + /* + * Ports must be above 16KB for the ISA bus filtering + * in the PCI-X to PCI bridge. + */ + octeon_pcie1_controller.io_resource->start = + cvmx_pcie_get_io_base_address(1) - + cvmx_pcie_get_io_base_address(0); + octeon_pcie1_controller.io_resource->end = + octeon_pcie1_controller.io_resource->start + + cvmx_pcie_get_io_size(1) - 1; + msleep(100); /* Some devices need extra time */ + register_pci_controller(&octeon_pcie1_controller); + device0 = cvmx_pcie_config_read32(1, 0, 0, 0, 0); + enable_pcie_bus_num_war[1] = + device_needs_bus_num_war(device0); + } + } else { + pr_notice("PCIe: Port 1 not in root complex mode, skipping.\n"); + /* CN63XX pass 1_x/2.0 errata PCIe-15205 */ + if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X) || + OCTEON_IS_MODEL(OCTEON_CN63XX_PASS2_0)) { + srio_war15205 += 1; + port = 1; + } + } + + /* + * CN63XX pass 1_x/2.0 errata PCIe-15205 requires setting all + * of SRIO MACs SLI_CTL_PORT*[INT*_MAP] to similar value and + * all of PCIe Macs SLI_CTL_PORT*[INT*_MAP] to different value + * from the previous set values + */ + if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X) || + OCTEON_IS_MODEL(OCTEON_CN63XX_PASS2_0)) { + if (srio_war15205 == 1) { + sli_ctl_portx.u64 = cvmx_read_csr(CVMX_PEXP_SLI_CTL_PORTX(port)); + sli_ctl_portx.s.inta_map = 1; + sli_ctl_portx.s.intb_map = 1; + sli_ctl_portx.s.intc_map = 1; + sli_ctl_portx.s.intd_map = 1; + cvmx_write_csr(CVMX_PEXP_SLI_CTL_PORTX(port), sli_ctl_portx.u64); + + sli_ctl_portx.u64 = cvmx_read_csr(CVMX_PEXP_SLI_CTL_PORTX(!port)); + sli_ctl_portx.s.inta_map = 0; + sli_ctl_portx.s.intb_map = 0; + sli_ctl_portx.s.intc_map = 0; + sli_ctl_portx.s.intd_map = 0; + cvmx_write_csr(CVMX_PEXP_SLI_CTL_PORTX(!port), sli_ctl_portx.u64); + } + } + + octeon_pci_dma_init(); + + return 0; +} +arch_initcall(octeon_pcie_setup); |