diff options
Diffstat (limited to 'arch/mips/pci')
71 files changed, 6703 insertions, 2336 deletions
diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile index c9209ca6c8e..ff8a5539b36 100644 --- a/arch/mips/pci/Makefile +++ b/arch/mips/pci/Makefile @@ -18,29 +18,31 @@ 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_LASAT) += pci-lasat.o obj-$(CONFIG_MIPS_COBALT) += fixup-cobalt.o -obj-$(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-$(CONFIG_LEMOTE_FULOONG2E) += fixup-fuloong2e.o ops-loongson2.o obj-$(CONFIG_LEMOTE_MACH2F) += fixup-lemote2f.o ops-loongson2.o -obj-$(CONFIG_MIPS_MALTA) += fixup-malta.o +obj-$(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-$(CONFIG_PMC_YOSEMITE) += fixup-yosemite.o ops-titan.o ops-titan-ht.o \ - pci-yosemite.o obj-$(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-$(CONFIG_SNI_RM) += fixup-sni.o ops-sni.o +obj-$(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-$(CONFIG_TANBAC_TB0287) += fixup-tb0287.o @@ -52,10 +54,12 @@ obj-$(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_WR_PPMC) += fixup-wrppmc.o obj-$(CONFIG_MIKROTIK_RB532) += pci-rc32434.o ops-rc32434.o fixup-rc32434.o -obj-$(CONFIG_CPU_CAVIUM_OCTEON) += pci-octeon.o pcie-octeon.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_CPU_CAVIUM_OCTEON) += msi-octeon.o +obj-$(CONFIG_CAVIUM_OCTEON_SOC) += msi-octeon.o +obj-$(CONFIG_CPU_XLP) += msi-xlp.o endif diff --git a/arch/mips/pci/fixup-au1000.c b/arch/mips/pci/fixup-au1000.c deleted file mode 100644 index e2ddfc49237..00000000000 --- a/arch/mips/pci/fixup-au1000.c +++ /dev/null @@ -1,43 +0,0 @@ -/* - * BRIEF MODULE DESCRIPTION - * Board specific PCI fixups. - * - * Copyright 2001-2003, 2008 MontaVista Software Inc. - * Author: MontaVista Software, Inc. <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/pci.h> -#include <linux/init.h> - -extern char irq_tab_alchemy[][5]; - -int __init pcibios_map_irq(const 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-cobalt.c b/arch/mips/pci/fixup-cobalt.c index 9553b14002d..a138e8ee5cf 100644 --- a/arch/mips/pci/fixup-cobalt.c +++ b/arch/mips/pci/fixup-cobalt.c @@ -94,14 +94,14 @@ 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. */ - printk(KERN_INFO "Galileo: revision %u\n", dev->revision); + printk(KERN_INFO "Galileo: revision %u\n", dev->revision); #if 0 if (dev->revision >= 0x10) { @@ -149,30 +149,30 @@ 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] = QUBE1_ETH0_IRQ, + [COBALT_PCICONF_CPU] = 0, + [COBALT_PCICONF_ETH0] = QUBE1_ETH0_IRQ, [COBALT_PCICONF_RAQSCSI] = SCSI_IRQ, - [COBALT_PCICONF_VIA] = 0, + [COBALT_PCICONF_VIA] = 0, [COBALT_PCICONF_PCISLOT] = PCISLOT_IRQ, - [COBALT_PCICONF_ETH1] = 0 + [COBALT_PCICONF_ETH1] = 0 }; static char irq_tab_cobalt[] __initdata = { - [COBALT_PCICONF_CPU] = 0, - [COBALT_PCICONF_ETH0] = ETH0_IRQ, + [COBALT_PCICONF_CPU] = 0, + [COBALT_PCICONF_ETH0] = ETH0_IRQ, [COBALT_PCICONF_RAQSCSI] = SCSI_IRQ, - [COBALT_PCICONF_VIA] = 0, + [COBALT_PCICONF_VIA] = 0, [COBALT_PCICONF_PCISLOT] = PCISLOT_IRQ, - [COBALT_PCICONF_ETH1] = ETH1_IRQ + [COBALT_PCICONF_ETH1] = ETH1_IRQ }; static char irq_tab_raq2[] __initdata = { - [COBALT_PCICONF_CPU] = 0, - [COBALT_PCICONF_ETH0] = ETH0_IRQ, + [COBALT_PCICONF_CPU] = 0, + [COBALT_PCICONF_ETH0] = ETH0_IRQ, [COBALT_PCICONF_RAQSCSI] = RAQ2_SCSI_IRQ, - [COBALT_PCICONF_VIA] = 0, + [COBALT_PCICONF_VIA] = 0, [COBALT_PCICONF_PCISLOT] = PCISLOT_IRQ, - [COBALT_PCICONF_ETH1] = ETH1_IRQ + [COBALT_PCICONF_ETH1] = ETH1_IRQ }; int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) diff --git a/arch/mips/pci/fixup-emma2rh.c b/arch/mips/pci/fixup-emma2rh.c index 0d9ccf4dfc5..19caf775c20 100644 --- a/arch/mips/pci/fixup-emma2rh.c +++ b/arch/mips/pci/fixup-emma2rh.c @@ -42,7 +42,7 @@ * */ -#define MAX_SLOT_NUM 10 +#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,}, @@ -52,7 +52,7 @@ static unsigned char irq_map[][5] __initdata = { MARKEINS_PCI_IRQ_INTA, MARKEINS_PCI_IRQ_INTB,}, }; -static void __devinit nec_usb_controller_fixup(struct pci_dev *dev) +static void nec_usb_controller_fixup(struct pci_dev *dev) { if (PCI_SLOT(dev->devfn) == EMMA2RH_USB_SLOT) /* on board USB controller configuration */ @@ -67,7 +67,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB, * 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 __devinit emma2rh_pci_host_fixup(struct pci_dev *dev) +static void emma2rh_pci_host_fixup(struct pci_dev *dev) { int i; diff --git a/arch/mips/pci/fixup-fuloong2e.c b/arch/mips/pci/fixup-fuloong2e.c index 4f6d8da07f9..50da773faed 100644 --- a/arch/mips/pci/fixup-fuloong2e.c +++ b/arch/mips/pci/fixup-fuloong2e.c @@ -6,9 +6,9 @@ * 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 + * 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> @@ -48,11 +48,11 @@ int pcibios_plat_dev_init(struct pci_dev *dev) return 0; } -static void __init loongson2e_nec_fixup(struct pci_dev *pdev) +static void loongson2e_nec_fixup(struct pci_dev *pdev) { unsigned int val; - /* Configues port 1, 2, 3, 4 to be validate*/ + /* 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); @@ -60,7 +60,7 @@ static void __init loongson2e_nec_fixup(struct pci_dev *pdev) pci_write_config_dword(pdev, 0xe4, 1 << 5); } -static void __init loongson2e_686b_func0_fixup(struct pci_dev *pdev) +static void loongson2e_686b_func0_fixup(struct pci_dev *pdev) { unsigned char c; @@ -135,7 +135,7 @@ static void __init loongson2e_686b_func0_fixup(struct pci_dev *pdev) printk(KERN_INFO"via686b fix: ISA bridge done\n"); } -static void __init loongson2e_686b_func1_fixup(struct pci_dev *pdev) +static void loongson2e_686b_func1_fixup(struct pci_dev *pdev) { printk(KERN_INFO"via686b fix: IDE\n"); @@ -152,7 +152,7 @@ static void __init loongson2e_686b_func1_fixup(struct pci_dev *pdev) /* disable read prefetch/write post buffers */ pci_write_config_byte(pdev, 0x41, 0x02); - /* use 3/4 as fifo thresh hold */ + /* use 3/4 as fifo thresh hold */ pci_write_config_byte(pdev, 0x43, 0x0a); pci_write_config_byte(pdev, 0x44, 0x00); @@ -168,19 +168,19 @@ static void __init loongson2e_686b_func1_fixup(struct pci_dev *pdev) printk(KERN_INFO"via686b fix: IDE done\n"); } -static void __init loongson2e_686b_func2_fixup(struct pci_dev *pdev) +static void loongson2e_686b_func2_fixup(struct pci_dev *pdev) { /* irq routing */ pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, 10); } -static void __init loongson2e_686b_func3_fixup(struct pci_dev *pdev) +static void loongson2e_686b_func3_fixup(struct pci_dev *pdev) { /* irq routing */ pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, 11); } -static void __init loongson2e_686b_func5_fixup(struct pci_dev *pdev) +static void loongson2e_686b_func5_fixup(struct pci_dev *pdev) { unsigned int val; unsigned char c; diff --git a/arch/mips/pci/fixup-ip32.c b/arch/mips/pci/fixup-ip32.c index 190fffd08d3..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}, }; 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 index caf2edeb02f..95ab9a1bd01 100644 --- a/arch/mips/pci/fixup-lemote2f.c +++ b/arch/mips/pci/fixup-lemote2f.c @@ -31,7 +31,7 @@ /* all the pci device has the PCIA pin, check the datasheet. */ static char irq_tab[][5] __initdata = { - /* INTA INTB INTC INTD */ + /* 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 */ @@ -69,15 +69,15 @@ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) case 2: pci_write_config_byte(dev, PCI_INTERRUPT_LINE, CS5536_IDE_INTR); - return CS5536_IDE_INTR; /* for IDE */ + 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 */ + 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; @@ -96,21 +96,21 @@ int pcibios_plat_dev_init(struct pci_dev *dev) } /* CS5536 SPEC. fixup */ -static void __init loongson_cs5536_isa_fixup(struct pci_dev *pdev) +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 __init loongson_cs5536_ide_fixup(struct pci_dev *pdev) +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 __init loongson_cs5536_acc_fixup(struct pci_dev *pdev) +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); @@ -118,26 +118,26 @@ static void __init loongson_cs5536_acc_fixup(struct pci_dev *pdev) pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xc0); } -static void __init loongson_cs5536_ohci_fixup(struct pci_dev *pdev) +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 __init loongson_cs5536_ehci_fixup(struct pci_dev *pdev) +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 << 2) | (1 << 3), 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 __init loongson_nec_fixup(struct pci_dev *pdev) +static void loongson_nec_fixup(struct pci_dev *pdev) { unsigned int val; 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 0f48498bc23..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 */ @@ -30,9 +32,9 @@ 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 */ }; @@ -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 e08f49cb687..8e4f8288eca 100644 --- a/arch/mips/pci/fixup-mpc30x.c +++ b/arch/mips/pci/fixup-mpc30x.c @@ -22,13 +22,13 @@ #include <asm/vr41xx/mpc30x.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, diff --git a/arch/mips/pci/fixup-pmcmsp.c b/arch/mips/pci/fixup-pmcmsp.c index 65735b1b766..fab405c21c2 100644 --- a/arch/mips/pci/fixup-pmcmsp.c +++ b/arch/mips/pci/fixup-pmcmsp.c @@ -48,117 +48,117 @@ #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 */ + /* 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 */ + /* 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 */ + /* 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 @@ -168,14 +168,14 @@ static char irq_tab[][5] __initdata = { * _________________________________________________________________________ * * DESCRIPTION: Perform platform specific device initialization at - * pci_enable_device() time. - * None are needed for the MSP7120 PCI Controller. + * pci_enable_device() time. + * None are needed for the MSP7120 PCI Controller. * - * INPUTS: dev - structure describing the PCI device + * INPUTS: dev - structure describing the PCI device * - * OUTPUTS: none + * OUTPUTS: none * - * RETURNS: PCIBIOS_SUCCESSFUL + * RETURNS: PCIBIOS_SUCCESSFUL * ****************************************************************************/ int pcibios_plat_dev_init(struct pci_dev *dev) @@ -190,16 +190,16 @@ int pcibios_plat_dev_init(struct pci_dev *dev) * * 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. + * 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 + * OUTPUTS: none * - * RETURNS: IRQ number + * RETURNS: IRQ number * ****************************************************************************/ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) diff --git a/arch/mips/pci/fixup-pnx8550.c b/arch/mips/pci/fixup-pnx8550.c deleted file mode 100644 index 96857ac63bf..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 pnx8550_irq_tab[][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(const struct pci_dev *dev, u8 slot, u8 pin) -{ - return pnx8550_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; -} diff --git a/arch/mips/pci/fixup-rc32434.c b/arch/mips/pci/fixup-rc32434.c index 3d86823d03a..7fcafd5da7d 100644 --- a/arch/mips/pci/fixup-rc32434.c +++ b/arch/mips/pci/fixup-rc32434.c @@ -27,17 +27,16 @@ #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/irq.h> -static int __devinitdata irq_map[2][12] = { +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 __devinit pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { int irq = 0; diff --git a/arch/mips/pci/fixup-sb1250.c b/arch/mips/pci/fixup-sb1250.c index f0bb9146e6c..8feae9154ba 100644 --- a/arch/mips/pci/fixup-sb1250.c +++ b/arch/mips/pci/fixup-sb1250.c @@ -8,14 +8,13 @@ * 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 __init quirk_sb1250_pci(struct pci_dev *dev) +static void quirk_sb1250_pci(struct pci_dev *dev) { pci_write_config_byte(dev, 0x40, 0xff); } @@ -25,7 +24,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SIBYTE, PCI_DEVICE_ID_BCM1250_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; } @@ -35,7 +34,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SIBYTE, PCI_DEVICE_ID_BCM1250_HT, /* * Set the SP1011 HT/PCI bridge's TRDY timeout to the finite max. */ -static void __init quirk_sp1011(struct pci_dev *dev) +static void quirk_sp1011(struct pci_dev *dev) { pci_write_config_byte(dev, 0x64, 0xff); } diff --git a/arch/mips/pci/fixup-sni.c b/arch/mips/pci/fixup-sni.c index 5c8a79bb266..f67ebeeb420 100644 --- a/arch/mips/pci/fixup-sni.c +++ b/arch/mips/pci/fixup-sni.c @@ -41,12 +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 */ @@ -58,20 +58,20 @@ 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 */ + /* 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 */ @@ -97,30 +97,30 @@ static char irq_tab_rm300e[5][5] __initdata = { #define INTD PCIT_IRQ_INTD static char irq_tab_pcit[13][5] __initdata = { - /* INTA INTB INTC INTD */ - { 0, 0, 0, 0, 0 }, /* HOST bridge */ + /* 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 */ + { 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 */ + /* 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) @@ -146,18 +146,18 @@ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) } return irq_tab_pcit_cplus[slot][pin]; case SNI_BRD_PCI_TOWER: - return irq_tab_pcit[slot][pin]; + return irq_tab_pcit[slot][pin]; case SNI_BRD_PCI_MTOWER: - if (is_rm300_revd()) - return irq_tab_rm300d[slot][pin]; - /* fall through */ + if (is_rm300_revd()) + return irq_tab_rm300d[slot][pin]; + /* fall through */ case SNI_BRD_PCI_DESKTOP: - return irq_tab_rm200[slot][pin]; + return irq_tab_rm200[slot][pin]; case SNI_BRD_PCI_MTOWER_CPLUS: - return irq_tab_rm300e[slot][pin]; + return irq_tab_rm300e[slot][pin]; } return 0; diff --git a/arch/mips/pci/fixup-tb0219.c b/arch/mips/pci/fixup-tb0219.c index 8084b17d440..d0b0083fbd2 100644 --- a/arch/mips/pci/fixup-tb0219.c +++ b/arch/mips/pci/fixup-tb0219.c @@ -1,7 +1,7 @@ /* * fixup-tb0219.c, The TANBAC TB0219 specific PCI fixups. * - * Copyright (C) 2003 Megasolution Inc. <matsu@megasolution.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 diff --git a/arch/mips/pci/fixup-tb0287.c b/arch/mips/pci/fixup-tb0287.c index 2fe29db4372..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 <yuasa@linux-mips.org> + * 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 diff --git a/arch/mips/pci/fixup-wrppmc.c b/arch/mips/pci/fixup-wrppmc.c deleted file mode 100644 index 3d277549d5d..00000000000 --- a/arch/mips/pci/fixup-wrppmc.c +++ /dev/null @@ -1,37 +0,0 @@ -/* - * fixup-wrppmc.c: PPMC board specific PCI fixup - * - * 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) 2006, Wind River Inc. Rongkai.zhan (rongkai.zhan@windriver.com) - */ -#include <linux/init.h> -#include <linux/pci.h> -#include <asm/gt64120.h> - -/* PCI interrupt pins */ -#define PCI_INTA 1 -#define PCI_INTB 2 -#define PCI_INTC 3 -#define PCI_INTD 4 - -#define PCI_SLOT_MAXNR 32 /* Each PCI bus has 32 physical slots */ - -static char pci_irq_tab[PCI_SLOT_MAXNR][5] __initdata = { - /* 0 INTA INTB INTC INTD */ - [0] = {0, 0, 0, 0, 0}, /* Slot 0: GT64120 PCI bridge */ - [6] = {0, WRPPMC_PCI_INTA_IRQ, 0, 0, 0}, -}; - -int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) -{ - return pci_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; -} diff --git a/arch/mips/pci/fixup-yosemite.c b/arch/mips/pci/fixup-yosemite.c deleted file mode 100644 index fdafb13a793..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(const 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 index 03742e64765..ab0c5d14c6f 100644 --- a/arch/mips/pci/msi-octeon.c +++ b/arch/mips/pci/msi-octeon.c @@ -3,7 +3,7 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 2005-2009 Cavium Networks + * Copyright (C) 2005-2009, 2010 Cavium Networks */ #include <linux/kernel.h> #include <linux/init.h> @@ -15,6 +15,7 @@ #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> @@ -22,7 +23,7 @@ * Each bit in msi_free_irq_bitmask represents a MSI interrupt that is * in use. */ -static uint64_t msi_free_irq_bitmask; +static u64 msi_free_irq_bitmask[4]; /* * Each bit in msi_multiple_irq_bitmask tells that the device using @@ -30,7 +31,7 @@ static uint64_t msi_free_irq_bitmask; * is used so we can disable all of the MSI interrupts when a device * uses multiple. */ -static uint64_t msi_multiple_irq_bitmask; +static u64 msi_multiple_irq_bitmask[4]; /* * This lock controls updates to msi_free_irq_bitmask and @@ -38,6 +39,11 @@ static uint64_t 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 @@ -54,12 +60,13 @@ static DEFINE_SPINLOCK(msi_free_irq_bitmask_lock); int arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc) { struct msi_msg msg; - uint16_t control; + u16 control; int configured_private_bits; int request_private_bits; - int irq; + int irq = 0; int irq_step; - uint64_t search_mask; + u64 search_mask; + int index; /* * Read the MSI config to figure out how many IRQs this device @@ -111,29 +118,31 @@ try_only_one: * use. */ spin_lock(&msi_free_irq_bitmask_lock); - for (irq = 0; irq < 64; irq += irq_step) { - if ((msi_free_irq_bitmask & (search_mask << irq)) == 0) { - msi_free_irq_bitmask |= search_mask << irq; - msi_multiple_irq_bitmask |= (search_mask >> 1) << irq; - break; + 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", + 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"); + 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) { @@ -142,6 +151,7 @@ try_only_one: 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; @@ -153,8 +163,13 @@ try_only_one: 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\n"); + panic("arch_setup_msi_irq: Invalid octeon_dma_bar_type"); } msg.data = irq - OCTEON_IRQ_MSI_BIT0; @@ -164,11 +179,39 @@ try_only_one: pci_write_config_word(dev, desc->msi_attrib.pos + PCI_MSI_FLAGS, control); - set_irq_msi(irq, desc); + 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 @@ -179,12 +222,18 @@ try_only_one: void arch_teardown_msi_irq(unsigned int irq) { int number_irqs; - uint64_t bitmask; + u64 bitmask; + int index = 0; + int irq0; - if ((irq < OCTEON_IRQ_MSI_BIT0) || (irq > OCTEON_IRQ_MSI_BIT63)) + 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 @@ -192,97 +241,198 @@ void arch_teardown_msi_irq(unsigned int irq) * IRQ is also owned by this device. */ number_irqs = 0; - while ((irq+number_irqs < 64) && - (msi_multiple_irq_bitmask & (1ull << (irq + number_irqs)))) + 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 <<= irq; - if ((msi_free_irq_bitmask & bitmask) != bitmask) + 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 &= ~bitmask; - msi_multiple_irq_bitmask &= ~bitmask; + 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_interrupt(int cpl, void *dev_id) +static irqreturn_t __octeon_msi_do_interrupt(int index, u64 msi_bits) { - uint64_t msi_bits; int irq; + int bit; - if (octeon_dma_bar_type == OCTEON_DMA_BAR_TYPE_PCIE) - msi_bits = cvmx_read_csr(CVMX_PEXP_NPEI_MSI_RCV0); - else - msi_bits = cvmx_read_csr(CVMX_NPI_NPI_MSI_RCV); - irq = fls64(msi_bits); - if (irq) { - irq += OCTEON_IRQ_MSI_BIT0 - 1; - if (irq_desc[irq].action) { - do_IRQ(irq); - return IRQ_HANDLED; - } else { - pr_err("Spurious MSI interrupt %d\n", irq); - if (octeon_has_feature(OCTEON_FEATURE_PCIE)) { - /* These chips have PCIe */ - cvmx_write_csr(CVMX_PEXP_NPEI_MSI_RCV0, - 1ull << (irq - - OCTEON_IRQ_MSI_BIT0)); - } else { - /* These chips have PCI */ - cvmx_write_csr(CVMX_NPI_NPI_MSI_RCV, - 1ull << (irq - - OCTEON_IRQ_MSI_BIT0)); - } - } + 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 octeon_msi_initialize(void) +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_interrupt, - IRQF_SHARED, - "MSI[0:63]", octeon_msi_interrupt)) + 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_interrupt, - IRQF_SHARED, - "MSI[0:15]", octeon_msi_interrupt)) + 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_interrupt, - IRQF_SHARED, - "MSI[16:31]", octeon_msi_interrupt)) + 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_interrupt, - IRQF_SHARED, - "MSI[32:47]", octeon_msi_interrupt)) + 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_interrupt, - IRQF_SHARED, - "MSI[48:63]", octeon_msi_interrupt)) + 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 9a57c5ab91d..00000000000 --- a/arch/mips/pci/ops-au1000.c +++ /dev/null @@ -1,308 +0,0 @@ -/* - * BRIEF MODULE DESCRIPTION - * Alchemy/AMD Au1xx0 PCI 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. - * - * 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 <linux/vmalloc.h> - -#include <asm/mach-au1x00/au1000.h> - -#undef DEBUG -#ifdef DEBUG -#define DBG(x...) printk(KERN_DEBUG 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); -} - -static struct vm_struct *pci_cfg_vm; -static int pci_cfg_wired_entry; -static unsigned long last_entryLo0, last_entryLo1; - -/* - * 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. - */ -void __init au1x_pci_cfg_init(void) -{ - /* Reserve a wired entry for PCI config accesses */ - pci_cfg_vm = get_vm_area(0x2000, VM_IOREMAP); - 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; -} - -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); - - /* - * 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 && 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 != 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 %u dev %u at %x *data %x conf %lx\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: device %u, status %lx\n", - device, (status >> 28) & 0xf); - - /* Clear errors */ - au_writel(status & 0xf000ffff, Au1500_PCI_STATCMD); - - *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 index 822ae179bc5..13eea696bbe 100644 --- a/arch/mips/pci/ops-bcm63xx.c +++ b/arch/mips/pci/ops-bcm63xx.c @@ -9,7 +9,6 @@ #include <linux/types.h> #include <linux/pci.h> #include <linux/kernel.h> -#include <linux/init.h> #include <linux/delay.h> #include <linux/io.h> @@ -174,8 +173,8 @@ static int bcm63xx_pci_write(struct pci_bus *bus, unsigned int devfn, } struct pci_ops bcm63xx_pci_ops = { - .read = bcm63xx_pci_read, - .write = bcm63xx_pci_write + .read = bcm63xx_pci_read, + .write = bcm63xx_pci_write }; #ifdef CONFIG_CARDBUS @@ -370,8 +369,8 @@ static int bcm63xx_cb_read(struct pci_bus *bus, unsigned int devfn, 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 + /* 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 && @@ -403,8 +402,8 @@ static int bcm63xx_cb_write(struct pci_bus *bus, unsigned int devfn, } struct pci_ops bcm63xx_cb_ops = { - .read = bcm63xx_cb_read, - .write = bcm63xx_cb_write, + .read = bcm63xx_cb_read, + .write = bcm63xx_cb_write, }; /* @@ -465,3 +464,64 @@ static void bcm63xx_fixup(struct pci_dev *dev) 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 1b3e03f20c5..c06205a8734 100644 --- a/arch/mips/pci/ops-bonito64.c +++ b/arch/mips/pci/ops-bonito64.c @@ -22,11 +22,10 @@ #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 #define CFG_SPACE_REG(offset) (void *)CKSEG1ADDR(_pcictrl_bonito_pcicfg + (offset)) @@ -137,7 +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 index b46b3e21177..438319465cb 100644 --- a/arch/mips/pci/ops-bridge.c +++ b/arch/mips/pci/ops-bridge.c @@ -56,7 +56,7 @@ static int pci_conf0_read_config(struct pci_bus *bus, unsigned int devfn, return PCIBIOS_DEVICE_NOT_FOUND; /* - * IOC3 is fucked fucked beyond believe ... Don't even give the + * 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))) @@ -76,7 +76,7 @@ static int pci_conf0_read_config(struct pci_bus *bus, unsigned int devfn, oh_my_gawd: /* - * IOC3 is fucked fucked beyond believe ... Don't even give the + * 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)) { @@ -85,7 +85,7 @@ oh_my_gawd: } /* - * IOC3 is fucked fucked beyond believe ... Don't try to access + * 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]; @@ -118,7 +118,7 @@ static int pci_conf1_read_config(struct pci_bus *bus, unsigned int devfn, return PCIBIOS_DEVICE_NOT_FOUND; /* - * IOC3 is fucked fucked beyond believe ... Don't even give the + * 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))) @@ -139,7 +139,7 @@ static int pci_conf1_read_config(struct pci_bus *bus, unsigned int devfn, oh_my_gawd: /* - * IOC3 is fucked fucked beyond believe ... Don't even give the + * 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)) { @@ -148,7 +148,7 @@ oh_my_gawd: } /* - * IOC3 is fucked fucked beyond believe ... Don't try to access + * IOC3 is fucking fucked beyond belief ... Don't try to access * anything but 32-bit words ... */ bridge->b_pci_cfg = (busno << 16) | (slot << 11); @@ -189,7 +189,7 @@ static int pci_conf0_write_config(struct pci_bus *bus, unsigned int devfn, return PCIBIOS_DEVICE_NOT_FOUND; /* - * IOC3 is fucked fucked beyond believe ... Don't even give the + * 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))) @@ -213,14 +213,14 @@ static int pci_conf0_write_config(struct pci_bus *bus, unsigned int devfn, oh_my_gawd: /* - * IOC3 is fucked fucked beyond believe ... Don't even give the + * 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 fucked fucked beyond believe ... Don't try to access + * 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]; @@ -257,7 +257,7 @@ static int pci_conf1_write_config(struct pci_bus *bus, unsigned int devfn, return PCIBIOS_DEVICE_NOT_FOUND; /* - * IOC3 is fucked fucked beyond believe ... Don't even give the + * 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))) @@ -281,14 +281,14 @@ static int pci_conf1_write_config(struct pci_bus *bus, unsigned int devfn, oh_my_gawd: /* - * IOC3 is fucked fucked beyond believe ... Don't even give the + * 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 fucked fucked beyond believe ... Don't try to access + * 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]; diff --git a/arch/mips/pci/ops-gt64xxx_pci0.c b/arch/mips/pci/ops-gt64xxx_pci0.c index 3d896c5f413..effcbda9f52 100644 --- a/arch/mips/pci/ops-gt64xxx_pci0.c +++ b/arch/mips/pci/ops-gt64xxx_pci0.c @@ -23,21 +23,21 @@ #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 gt64xxx_pci0_pcibios_config_access(unsigned char access_type, struct pci_bus *bus, unsigned int devfn, int where, u32 * data) @@ -50,7 +50,7 @@ static int gt64xxx_pci0_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 gt64xxx_pci0_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; } @@ -106,7 +106,7 @@ static int gt64xxx_pci0_pcibios_read(struct pci_bus *bus, unsigned int devfn, u32 data = 0; if (gt64xxx_pci0_pcibios_config_access(PCI_ACCESS_READ, bus, devfn, - where, &data)) + where, &data)) return PCIBIOS_DEVICE_NOT_FOUND; if (size == 1) @@ -128,7 +128,7 @@ static int gt64xxx_pci0_pcibios_write(struct pci_bus *bus, unsigned int devfn, data = val; else { if (gt64xxx_pci0_pcibios_config_access(PCI_ACCESS_READ, bus, - devfn, where, &data)) + devfn, where, &data)) return PCIBIOS_DEVICE_NOT_FOUND; if (size == 1) @@ -140,7 +140,7 @@ static int gt64xxx_pci0_pcibios_write(struct pci_bus *bus, unsigned int devfn, } if (gt64xxx_pci0_pcibios_config_access(PCI_ACCESS_WRITE, bus, devfn, - where, &data)) + where, &data)) return PCIBIOS_DEVICE_NOT_FOUND; return PCIBIOS_SUCCESSFUL; 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 index aa5d3da2721..24138bb0cbe 100644 --- a/arch/mips/pci/ops-loongson2.c +++ b/arch/mips/pci/ops-loongson2.c @@ -1,13 +1,11 @@ /* - * fuloong2e specific PCI support. - * * 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 <wuzj@lemote.com> + * 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 @@ -16,7 +14,7 @@ #include <linux/types.h> #include <linux/pci.h> #include <linux/kernel.h> -#include <linux/init.h> +#include <linux/export.h> #include <loongson.h> @@ -25,7 +23,7 @@ #include <cs5536/cs5536.h> #endif -#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_READ 0 #define PCI_ACCESS_WRITE 1 #define CFG_SPACE_REG(offset) \ @@ -182,15 +180,21 @@ struct pci_ops loongson_pci_ops = { }; #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); @@ -200,9 +204,13 @@ void _wrmsr(u32 msr, u32 hi, u32 lo) .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 1cfb5588699..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> 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 b7f0fb0210f..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) diff --git a/arch/mips/pci/ops-pmcmsp.c b/arch/mips/pci/ops-pmcmsp.c index 32548b5d68d..50034f985be 100644 --- a/arch/mips/pci/ops-pmcmsp.c +++ b/arch/mips/pci/ops-pmcmsp.c @@ -7,10 +7,10 @@ * 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@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 + * 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. * @@ -53,96 +53,84 @@ static void pci_proc_init(void); /***************************************************************************** * - * FUNCTION: read_msp_pci_counts + * 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. + * interrupt has asserted. Can be invoked by the + * /proc filesystem. * - * INPUTS: page - part of STDOUT calculation - * off - part of STDOUT calculation - * count - part of STDOUT calculation - * data - unused + * INPUTS: m - synthetic file construction data + * v - iterator * - * OUTPUTS: start - new start location - * eof - end of file pointer - * - * RETURNS: len - STDOUT length + * RETURNS: 0 or error * ****************************************************************************/ -static int read_msp_pci_counts(char *page, char **start, off_t off, - int count, int *eof, void *data) +static int show_msp_pci_counts(struct seq_file *m, void *v) { int i; - int len = 0; unsigned int intcount, total = 0; for (i = 0; i < 32; ++i) { intcount = pci_int_count[i]; if (intcount != 0) { - len += sprintf(page + len, "[%d] = %u\n", i, intcount); + seq_printf(m, "[%d] = %u\n", i, intcount); total += intcount; } } - len += sprintf(page + len, "total = %u\n", total); - if (len <= off+count) - *eof = 1; - - *start = page + off; - len -= off; - if (len > count) - len = count; - if (len < 0) - len = 0; + seq_printf(m, "total = %u\n", total); + return 0; +} - return len; +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 + * 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: page - part of STDOUT calculation - * off - part of STDOUT calculation - * count - part of STDOUT calculation - * data - unused + * 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. * - * OUTPUTS: start - new start location - * eof - end of file pointer + * INPUTS: m - synthetic file construction data + * v - iterator * - * RETURNS: len - STDOUT length + * RETURNS: 0 or error * ****************************************************************************/ -static int gen_pci_cfg_wr(char *page, char **start, off_t off, - int count, int *eof, void *data) +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; - int len = 0; unsigned long value; int intr; - len += sprintf(page + len, "PMC MSP PCI: Beginning\n"); + seq_puts(m, "PMC MSP PCI: Beginning\n"); if (proc_init == 0) { pci_proc_init(); proc_init = ~0; } - len += sprintf(page + len, "PMC MSP PCI: Before Cfg Wr\n"); + seq_puts(m, "PMC MSP PCI: Before Cfg Wr\n"); /* * Generate PCI Configuration Write Cycle @@ -168,21 +156,22 @@ static int gen_pci_cfg_wr(char *page, char **start, off_t off, */ intr = preg->if_status; - len += sprintf(page + len, "PMC MSP PCI: After Cfg Wr\n"); - - /* Handle STDOUT calculations */ - if (len <= off+count) - *eof = 1; - *start = page + off; - len -= off; - if (len > count) - len = count; - if (len < 0) - len = 0; + seq_puts(m, "PMC MSP PCI: After Cfg Wr\n"); + return 0; +} - return len; +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 @@ -190,23 +179,21 @@ static int gen_pci_cfg_wr(char *page, char **start, off_t off, * * DESCRIPTION: Create entries in the /proc filesystem for debug access. * - * INPUTS: none + * INPUTS: none * - * OUTPUTS: none + * OUTPUTS: none * - * RETURNS: none + * RETURNS: none * ****************************************************************************/ static void pci_proc_init(void) { - create_proc_read_entry("pmc_msp_pci_rd_cnt", 0, NULL, - read_msp_pci_counts, NULL); - create_proc_read_entry("pmc_msp_pci_cfg_wr", 0, NULL, - gen_pci_cfg_wr, NULL); + 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 */ -DEFINE_SPINLOCK(bpci_lock); +static DEFINE_SPINLOCK(bpci_lock); /***************************************************************************** * @@ -214,44 +201,44 @@ DEFINE_SPINLOCK(bpci_lock); * _________________________________________________________________________ * * 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. + * 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. + * 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. + * 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. + * 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. + * 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 */ + .flags = IORESOURCE_IO /* I/O space */ }; /***************************************************************************** @@ -260,26 +247,26 @@ static struct resource pci_io_resource = { * _________________________________________________________________________ * * DESCRIPTION: Defines the address range that pciauto() will use to - * assign to the memory BARs of PCI devices. + * 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 .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. + * 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. + * name - String used for a meaningful name. * - * start - Start address of MSP7120's memory space, as MSP7120 presents - * the address on the PCI bus. + * 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. + * 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. + * flags - Attributes indicating the type of resource. In this case, + * indicate memory space. * ****************************************************************************/ static struct resource pci_mem_resource = { @@ -295,20 +282,20 @@ static struct resource pci_mem_resource = { * _________________________________________________________________________ * * 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. + * 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 + * INPUTS: irq - unused + * dev_id - unused + * pt_regs - unused * - * OUTPUTS: none + * OUTPUTS: none * - * RETURNS: PCIBIOS_SUCCESSFUL - success + * RETURNS: PCIBIOS_SUCCESSFUL - success * ****************************************************************************/ -static int bpci_interrupt(int irq, void *dev_id) +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; @@ -326,7 +313,7 @@ static int bpci_interrupt(int irq, void *dev_id) /* write to clear all asserted interrupts */ preg->if_status = stat; - return PCIBIOS_SUCCESSFUL; + return IRQ_HANDLED; } /***************************************************************************** @@ -335,41 +322,41 @@ static int bpci_interrupt(int irq, void *dev_id) * _________________________________________________________________________ * * DESCRIPTION: Performs a PCI configuration access (rd or wr), then - * checks that the access succeeded by querying MSP7120's - * PCI status bits. + * 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 targetted 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 targetted 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. + * 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. + * data - for read accesses, contains the value read. * - * RETURNS: PCIBIOS_SUCCESSFUL - success - * -1 - access failure + * RETURNS: PCIBIOS_SUCCESSFUL - success + * -1 - access failure * ****************************************************************************/ int msp_pcibios_config_access(unsigned char access_type, @@ -405,7 +392,7 @@ int msp_pcibios_config_access(unsigned char access_type, if (pciirqflag == 0) { ret = request_irq(MSP_INT_PCI,/* Hardcoded internal MSP7120 wiring */ bpci_interrupt, - IRQF_SHARED | IRQF_DISABLED, + IRQF_SHARED, "PMC MSP PCI Host", preg); if (ret != 0) @@ -429,7 +416,7 @@ int msp_pcibios_config_access(unsigned char access_type, * 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 + * marked reserved. In case the Block Copy is resurrected in a * future design, maintain the code that treats these two interrupts * specially. * @@ -439,7 +426,7 @@ int msp_pcibios_config_access(unsigned char access_type, preg->if_status = ~(BPCI_IFSTATUS_BC0F | BPCI_IFSTATUS_BC1F); /* Setup address that is to appear on PCI bus */ - preg->config_addr = BPCI_CFGADDR_ENABLE | + preg->config_addr = BPCI_CFGADDR_ENABLE | (bus_num << BPCI_CFGADDR_BUSNUM_SHF) | (dev_fn << BPCI_CFGADDR_FUNCTNUM_SHF) | (where & 0xFC); @@ -494,21 +481,21 @@ int msp_pcibios_config_access(unsigned char access_type, * _________________________________________________________________________ * * 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. + * 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. + * 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 + * OUTPUTS val - read data * - * RETURNS: PCIBIOS_SUCCESSFUL - success - * -1 - read access failure + * RETURNS: PCIBIOS_SUCCESSFUL - success + * -1 - read access failure * ****************************************************************************/ static int @@ -541,22 +528,22 @@ msp_pcibios_read_config_byte(struct pci_bus *bus, * _________________________________________________________________________ * * 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. + * 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. + * 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 + * OUTPUTS val - read data * - * RETURNS: PCIBIOS_SUCCESSFUL - success - * PCIBIOS_BAD_REGISTER_NUMBER - bad register address - * -1 - read access failure + * RETURNS: PCIBIOS_SUCCESSFUL - success + * PCIBIOS_BAD_REGISTER_NUMBER - bad register address + * -1 - read access failure * ****************************************************************************/ static int @@ -600,20 +587,20 @@ msp_pcibios_read_config_word(struct pci_bus *bus, * _________________________________________________________________________ * * DESCRIPTION: Read a double word (32 bits) from PCI configuration - * address space. + * 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. + * 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 + * OUTPUTS val - read data * - * RETURNS: PCIBIOS_SUCCESSFUL - success - * PCIBIOS_BAD_REGISTER_NUMBER - bad register address - * -1 - read access failure + * RETURNS: PCIBIOS_SUCCESSFUL - success + * PCIBIOS_BAD_REGISTER_NUMBER - bad register address + * -1 - read access failure * ****************************************************************************/ static int @@ -652,21 +639,21 @@ msp_pcibios_read_config_dword(struct pci_bus *bus, * _________________________________________________________________________ * * 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. + * 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 + * 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 + * OUTPUTS none * - * RETURNS: PCIBIOS_SUCCESSFUL - success - * -1 - write access failure + * RETURNS: PCIBIOS_SUCCESSFUL - success + * -1 - write access failure * ****************************************************************************/ static int @@ -700,22 +687,22 @@ msp_pcibios_write_config_byte(struct pci_bus *bus, * _________________________________________________________________________ * * 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. + * 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 + * 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 + * OUTPUTS none * - * RETURNS: PCIBIOS_SUCCESSFUL - success - * PCIBIOS_BAD_REGISTER_NUMBER - bad register address - * -1 - write access failure + * RETURNS: PCIBIOS_SUCCESSFUL - success + * PCIBIOS_BAD_REGISTER_NUMBER - bad register address + * -1 - write access failure * ****************************************************************************/ static int @@ -753,21 +740,21 @@ msp_pcibios_write_config_word(struct pci_bus *bus, * _________________________________________________________________________ * * DESCRIPTION: Write a double word (32-bits) to PCI configuration address - * space. + * 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 + * 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 + * OUTPUTS none * - * RETURNS: PCIBIOS_SUCCESSFUL - success - * PCIBIOS_BAD_REGISTER_NUMBER - bad register address - * -1 - write access failure + * RETURNS: PCIBIOS_SUCCESSFUL - success + * PCIBIOS_BAD_REGISTER_NUMBER - bad register address + * -1 - write access failure * ****************************************************************************/ static int @@ -794,22 +781,22 @@ msp_pcibios_write_config_dword(struct pci_bus *bus, * _________________________________________________________________________ * * DESCRIPTION: Interface the PCI configuration read request with - * the appropriate function, based on how many bytes - * the read request is. + * 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. + * 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. + * OUTPUTS val - value read, with any extraneous bytes masked + * to zero. * - * RETURNS: PCIBIOS_SUCCESSFUL - success - * -1 - failure + * RETURNS: PCIBIOS_SUCCESSFUL - success + * -1 - failure * ****************************************************************************/ int @@ -845,22 +832,22 @@ msp_pcibios_read_config(struct pci_bus *bus, * _________________________________________________________________________ * * DESCRIPTION: Interface the PCI configuration write request with - * the appropriate function, based on how many bytes - * the read request is. + * 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 + * 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 + * OUTPUTS: none * - * RETURNS: PCIBIOS_SUCCESSFUL - success - * -1 - failure + * RETURNS: PCIBIOS_SUCCESSFUL - success + * -1 - failure * ****************************************************************************/ int @@ -897,11 +884,11 @@ msp_pcibios_write_config(struct pci_bus *bus, * _________________________________________________________________________ * * DESCRIPTION: structure to abstract the hardware specific PCI - * configuration accesses. + * configuration accesses. * * ELEMENTS: - * read - function for Linux to generate PCI Configuration reads. - * write - function for Linux to generate PCI Configuration writes. + * read - function for Linux to generate PCI Configuration reads. + * write - function for Linux to generate PCI Configuration writes. * ****************************************************************************/ struct pci_ops msp_pci_ops = { @@ -917,33 +904,34 @@ struct pci_ops msp_pci_ops = { * Describes the attributes of the MSP7120 PCI Host Controller * * ELEMENTS: - * pci_ops - abstracts the hardware specific PCI configuration - * accesses. + * pci_ops - abstracts the hardware specific PCI configuration + * accesses. * * mem_resource - address range pciauto() uses to assign to PCI device - * memory BARs. + * 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. + * 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. + * 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. + * 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 }; @@ -954,7 +942,7 @@ static struct pci_controller msp_pci_controller = { * _________________________________________________________________________ * * DESCRIPTION: Initialize the PCI Host Controller and register it with - * Linux so Linux can seize control of the PCI bus. + * Linux so Linux can seize control of the PCI bus. * ****************************************************************************/ void __init msp_pci_init(void) @@ -978,7 +966,7 @@ void __init msp_pci_init(void) *(unsigned long *)QFLUSH_REG_1 = 3; /* Configure PCI Host Controller. */ - preg->if_status = ~0; /* Clear cause register bits */ + 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 */ diff --git a/arch/mips/pci/ops-pnx8550.c b/arch/mips/pci/ops-pnx8550.c deleted file mode 100644 index 1e6213fa7bd..00000000000 --- a/arch/mips/pci/ops-pnx8550.c +++ /dev/null @@ -1,282 +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> - -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", __func__); - } - } - - 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", - __func__, 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 == NULL) - 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 == NULL) - 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 == NULL) - 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 == NULL) - 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_WRITE, 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 == NULL) - 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 == NULL) - 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 index d1f8fa210ca..874ed6df976 100644 --- a/arch/mips/pci/ops-rc32434.c +++ b/arch/mips/pci/ops-rc32434.c @@ -26,7 +26,6 @@ * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/delay.h> -#include <linux/init.h> #include <linux/io.h> #include <linux/pci.h> #include <linux/types.h> @@ -35,7 +34,7 @@ #include <asm/mach-rc32434/rc32434.h> #include <asm/mach-rc32434/pci.h> -#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_READ 0 #define PCI_ACCESS_WRITE 1 diff --git a/arch/mips/pci/ops-sni.c b/arch/mips/pci/ops-sni.c index 97ed25b92ed..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; } 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 ebf8fc40e9b..00000000000 --- a/arch/mips/pci/ops-titan.c +++ /dev/null @@ -1,111 +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/pci.h> -#include <asm/io.h> -#include <asm/rm9k-ocd.h> - -/* - * PCI specific defines - */ -#define TITAN_PCI_0_CONFIG_ADDRESS 0x780 -#define TITAN_PCI_0_CONFIG_DATA 0x784 - -/* - * Titan PCI Config Read Byte - */ -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 */ - ocd_writel(address, TITAN_PCI_0_CONFIG_ADDRESS); - tmp = ocd_readl(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 */ - ocd_writel(address, TITAN_PCI_0_CONFIG_ADDRESS); - - /* write the data */ - switch (size) { - case 1: - ocd_writeb(val, TITAN_PCI_0_CONFIG_DATA + (~reg & 0x3)); - break; - - case 2: - ocd_writew(val, TITAN_PCI_0_CONFIG_DATA + (~reg & 0x2)); - break; - - case 4: - ocd_writel(val, TITAN_PCI_0_CONFIG_DATA); - 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 31c15019659..d35dc9c9ab9 100644 --- a/arch/mips/pci/ops-tx3927.c +++ b/arch/mips/pci/ops-tx3927.c @@ -11,7 +11,7 @@ * 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 @@ -38,6 +38,7 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/addrspace.h> #include <asm/txx9irq.h> @@ -224,7 +225,7 @@ void __init tx3927_setup_pcierr_irq(void) { if (request_irq(TXX9_IRQ_BASE + TX3927_IR_PCI, tx3927_pcierr_interrupt, - IRQF_DISABLED, "PCI error", + 0, "PCI error", (void *)TX3927_PCIC_REG)) printk(KERN_WARNING "Failed to request irq for PCIERR\n"); } diff --git a/arch/mips/pci/ops-tx4927.c b/arch/mips/pci/ops-tx4927.c index 5989e747527..0e046d82e4e 100644 --- a/arch/mips/pci/ops-tx4927.c +++ b/arch/mips/pci/ops-tx4927.c @@ -2,21 +2,22 @@ * Define the pci_ops for the PCIC on Toshiba TX4927, TX4938, etc. * * Based on linux/arch/mips/pci/ops-tx4938.c, - * linux/arch/mips/pci/fixup-rbtx4938.c, - * linux/arch/mips/txx9/rbtx4938/setup.c, + * linux/arch/mips/pci/fixup-rbtx4938.c, + * linux/arch/mips/txx9/rbtx4938/setup.c, * and RBTX49xx patch from CELF patch archive. * * 2003-2005 (c) MontaVista Software, Inc. * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org) * (C) Copyright TOSHIBA CORPORATION 2000-2001, 2004-2007 * - * 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. */ #include <linux/kernel.h> #include <linux/interrupt.h> +#include <linux/irq.h> #include <asm/txx9/pci.h> #include <asm/txx9/tx4927pcic.h> @@ -190,28 +191,31 @@ static struct { u8 trdyto; u8 retryto; u16 gbwc; -} tx4927_pci_opts __devinitdata = { +} tx4927_pci_opts = { .trdyto = 0, .retryto = 0, .gbwc = 0xfe0, /* 4064 GBUSCLK for CCFG.GTOT=0b11 */ }; -char *__devinit tx4927_pcibios_setup(char *str) +char *tx4927_pcibios_setup(char *str) { unsigned long val; if (!strncmp(str, "trdyto=", 7)) { - if (strict_strtoul(str + 7, 0, &val) == 0) + u8 val = 0; + if (kstrtou8(str + 7, 0, &val) == 0) tx4927_pci_opts.trdyto = val; return NULL; } if (!strncmp(str, "retryto=", 8)) { - if (strict_strtoul(str + 8, 0, &val) == 0) + u8 val = 0; + if (kstrtou8(str + 8, 0, &val) == 0) tx4927_pci_opts.retryto = val; return NULL; } if (!strncmp(str, "gbwc=", 5)) { - if (strict_strtoul(str + 5, 0, &val) == 0) + u16 val; + if (kstrtou16(str + 5, 0, &val) == 0) tx4927_pci_opts.gbwc = val; return NULL; } @@ -494,7 +498,7 @@ irqreturn_t tx4927_pcierr_interrupt(int irq, void *dev_id) } #ifdef CONFIG_TOSHIBA_FPCIB0 -static void __init tx4927_quirk_slc90e66_bridge(struct pci_dev *dev) +static void tx4927_quirk_slc90e66_bridge(struct pci_dev *dev) { struct tx4927_pcic_reg __iomem *pcicptr = pci_bus_to_pcicptr(dev->bus); diff --git a/arch/mips/pci/ops-vr41xx.c b/arch/mips/pci/ops-vr41xx.c index 28962a7c660..551128c7d92 100644 --- a/arch/mips/pci/ops-vr41xx.c +++ b/arch/mips/pci/ops-vr41xx.c @@ -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 6f5e24c6ae6..5ec2a7bae02 100644 --- a/arch/mips/pci/pci-bcm1480.c +++ b/arch/mips/pci/pci-bcm1480.c @@ -39,6 +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> @@ -54,8 +55,8 @@ 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; @@ -194,7 +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, + .io_offset = A_BCM1480_PHYS_PCI_IO_MATCH_BYTES, }; @@ -204,13 +205,13 @@ static int __init bcm1480_pcibios_init(void) uint64_t reg; /* 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; @@ -227,7 +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 */ } @@ -257,7 +258,9 @@ static int __init bcm1480_pcibios_init(void) 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 50cc6e9e824..1263c5e7dbe 100644 --- a/arch/mips/pci/pci-bcm1480ht.c +++ b/arch/mips/pci/pci-bcm1480ht.c @@ -53,8 +53,8 @@ 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; @@ -191,7 +191,7 @@ 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, + .io_offset = A_BCM1480_PHYS_HT_IO_MATCH_BYTES, }; static int __init bcm1480ht_pcibios_init(void) diff --git a/arch/mips/pci/pci-bcm47xx.c b/arch/mips/pci/pci-bcm47xx.c index bea9b6cdfdb..76f16eaed0a 100644 --- a/arch/mips/pci/pci-bcm47xx.c +++ b/arch/mips/pci/pci-bcm47xx.c @@ -25,13 +25,16 @@ #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; } -int pcibios_plat_dev_init(struct pci_dev *dev) +#ifdef CONFIG_BCM47XX_SSB +static int bcm47xx_pcibios_plat_dev_init_ssb(struct pci_dev *dev) { int res; u8 slot, pin; @@ -57,4 +60,45 @@ int pcibios_plat_dev_init(struct pci_dev *dev) 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 index 82e0fde1dba..151d9b5870b 100644 --- a/arch/mips/pci/pci-bcm63xx.c +++ b/arch/mips/pci/pci-bcm63xx.c @@ -10,8 +10,12 @@ #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" /* @@ -21,21 +25,21 @@ 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 + .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, + .name = "bcm63xx PCI IO space", + .start = BCM_PCI_IO_BASE_PA, #ifdef CONFIG_CARDBUS - .end = BCM_PCI_IO_HALF_PA, + .end = BCM_PCI_IO_HALF_PA, #else - .end = BCM_PCI_IO_END_PA, + .end = BCM_PCI_IO_END_PA, #endif - .flags = IORESOURCE_IO + .flags = IORESOURCE_IO }; struct pci_controller bcm63xx_controller = { @@ -51,17 +55,17 @@ struct pci_controller bcm63xx_controller = { */ #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 + .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 + .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 = { @@ -71,6 +75,26 @@ struct pci_controller bcm63xx_cb_controller = { }; #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; @@ -87,30 +111,113 @@ static void bcm63xx_int_cfg_writel(u32 val, u32 reg) u32 tmp; tmp = reg & MPI_PCICFGCTL_CFGADDR_MASK; - tmp |= MPI_PCICFGCTL_WRITEEN_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 int __init bcm63xx_pci_init(void) +static void __init bcm63xx_reset_pcie(void) { - unsigned int mem_size; u32 val; + u32 reg; - if (!BCMCPU_IS_6348() && !BCMCPU_IS_6358()) - return -ENODEV; + /* enable SERDES */ + if (BCMCPU_IS_6328()) + reg = MISC_SERDES_CTRL_6328_REG; + else + reg = MISC_SERDES_CTRL_6362_REG; - if (!bcm63xx_pci_enabled) + 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 + * 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. */ @@ -143,9 +250,9 @@ static int __init bcm63xx_pci_init(void) 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 + /* 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; @@ -159,7 +266,7 @@ static int __init bcm63xx_pci_init(void) /* 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_6358()) + if (BCMCPU_IS_3368() || BCMCPU_IS_6358() || BCMCPU_IS_6368()) val = MPI_SP0_REMAP_ENABLE_MASK; else val = 0; @@ -183,7 +290,7 @@ static int __init bcm63xx_pci_init(void) bcm_mpi_writel(0, MPI_SP1_RANGE_REG); } - /* change host bridge retry counter to infinite number of + /* 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); @@ -221,4 +328,24 @@ static int __init bcm63xx_pci_init(void) 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 index a6e594ef3d6..ffab4da7bd0 100644 --- a/arch/mips/pci/pci-bcm63xx.h +++ b/arch/mips/pci/pci-bcm63xx.h @@ -7,17 +7,22 @@ #include <bcm63xx_dev_pci.h> /* - * Cardbus shares the PCI bus, but has no IDSEL, so a special id is + * 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 diff --git a/arch/mips/pci/pci-ip27.c b/arch/mips/pci/pci-ip27.c index a0e726eb039..0f09eafa5e3 100644 --- a/arch/mips/pci/pci-ip27.c +++ b/arch/mips/pci/pci-ip27.c @@ -7,8 +7,8 @@ * 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> @@ -29,7 +29,7 @@ /* * 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]; @@ -41,7 +41,7 @@ int irq_to_slot[MAX_PCI_BUSSES * MAX_DEVICES_PER_PCIBUS]; extern struct pci_ops bridge_pci_ops; -int __cpuinit 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; @@ -49,7 +49,7 @@ int __cpuinit bridge_probe(nasid_t nasid, int widget_id, int masterwid) bridge_t *bridge; int slot; - pci_probe_only = 1; + pci_set_flags(PCI_PROBE_ONLY); printk("a bridge\n"); @@ -102,7 +102,7 @@ int __cpuinit 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 */ @@ -122,7 +122,7 @@ int __cpuinit 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; @@ -142,7 +142,7 @@ int __cpuinit 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(const struct pci_dev *dev, u8 slot, u8 pin) +int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { return 0; } @@ -183,7 +183,7 @@ int pcibios_plat_dev_init(struct pci_dev *dev) } /* - * 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. @@ -211,11 +211,12 @@ 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); @@ -223,6 +224,7 @@ int pcibus_to_node(struct pci_bus *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 532b561b444..b1e061f7fdc 100644 --- a/arch/mips/pci/pci-ip32.c +++ b/arch/mips/pci/pci-ip32.c @@ -18,9 +18,9 @@ /* * 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) { 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 a98e543a514..40d2797d2bc 100644 --- a/arch/mips/pci/pci-lasat.c +++ b/arch/mips/pci/pci-lasat.c @@ -51,15 +51,15 @@ static int __init lasat_pci_setup(void) arch_initcall(lasat_pci_setup); -#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) +#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(const struct pci_dev *dev, u8 slot, u8 pin) { @@ -69,13 +69,13 @@ int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) case 3: return LASAT_IRQ_PCIA + (((slot-1) + (pin-1)) % 4); case 4: - return LASAT_IRQ_ETH1; /* Ethernet 1 (LAN 2) */ + return LASAT_IRQ_ETH1; /* Ethernet 1 (LAN 2) */ case 5: - return LASAT_IRQ_ETH0; /* Ethernet 0 (LAN 1) */ + return LASAT_IRQ_ETH0; /* Ethernet 0 (LAN 1) */ case 6: - return LASAT_IRQ_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-octeon.c b/arch/mips/pci/pci-octeon.c index 9cb0c807f56..59cccd95688 100644 --- a/arch/mips/pci/pci-octeon.c +++ b/arch/mips/pci/pci-octeon.c @@ -11,6 +11,8 @@ #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> @@ -19,6 +21,8 @@ #include <asm/octeon/cvmx-pci-defs.h> #include <asm/octeon/pci-octeon.h> +#include <dma-coherence.h> + #define USE_OCTEON_INTERNAL_ARBITER /* @@ -26,12 +30,14 @@ * 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) +#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 */ @@ -53,7 +59,7 @@ union octeon_pci_address { } s; }; -int __initdata (*octeon_pcibios_map_irq)(const struct pci_dev *dev, +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; @@ -62,10 +68,10 @@ enum octeon_dma_bar_type octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_INVALID; * * @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. + * 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. + * 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) @@ -94,7 +100,7 @@ int pcibios_plat_dev_init(struct pci_dev *dev) */ 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, 48); + 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 */ @@ -104,7 +110,7 @@ int pcibios_plat_dev_init(struct pci_dev *dev) if (dev->subordinate) { /* Set latency timers on sub bridges */ - pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER, 48); + 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; @@ -112,20 +118,11 @@ int pcibios_plat_dev_init(struct pci_dev *dev) } /* Enable the PCIe normal error reporting */ - pos = pci_find_capability(dev, PCI_CAP_ID_EXP); - if (pos) { - /* Update Device Control */ - pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &config); - /* Correctable Error Reporting */ - config |= PCI_EXP_DEVCTL_CERE; - /* Non-Fatal Error Reporting */ - config |= PCI_EXP_DEVCTL_NFERE; - /* Fatal Error Reporting */ - config |= PCI_EXP_DEVCTL_FERE; - /* Unsupported Request */ - config |= PCI_EXP_DEVCTL_URRE; - pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, config); - } + 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); @@ -170,6 +167,8 @@ int pcibios_plat_dev_init(struct pci_dev *dev) pci_write_config_dword(dev, pos + PCI_ERR_ROOT_STATUS, dconfig); } + dev->dev.archdata.dma_ops = octeon_pci_dma_map_ops; + return 0; } @@ -209,16 +208,14 @@ const char *octeon_get_pci_interrupts(void) case CVMX_BOARD_TYPE_NAO38: /* This is really the NAC38 */ return "AAAAADABAAAAAAAAAAAAAAAAAAAAAAAA"; - case CVMX_BOARD_TYPE_THUNDER: - return ""; - case CVMX_BOARD_TYPE_EBH3000: - return ""; 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 ""; } @@ -229,10 +226,10 @@ const char *octeon_get_pci_interrupts(void) * * @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. + * 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. + * as it goes through each bridge. * Returns Interrupt number for the device */ int __init octeon_pci_pcibios_map_irq(const struct pci_dev *dev, @@ -407,8 +404,8 @@ static void octeon_pci_initialize(void) 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 */ + 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); @@ -436,7 +433,7 @@ static void octeon_pci_initialize(void) /* * TDOMC must be set to one in PCI mode. TDOMC should be set to 4 - * in PCI-X mode to allow four oustanding splits. Otherwise, + * 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. @@ -449,7 +446,7 @@ static void octeon_pci_initialize(void) * 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 + * 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 @@ -459,7 +456,7 @@ static void octeon_pci_initialize(void) cfg19.s.tdomc = 4; /* * Master Deferred Read Request Outstanding Max Count - * (PCI only). CR4C[26:24] Max SAC cycles MAX DAC + * (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 @@ -510,7 +507,7 @@ static void octeon_pci_initialize(void) #endif /* USE_OCTEON_INTERNAL_ARBITER */ /* - * Preferrably written to 1 to set MLTD. [RDSATI,TRTAE, + * Preferably written to 1 to set MLTD. [RDSATI,TRTAE, * TWTAE,TMAE,DPPMR -> must be zero. TILT -> must not be set to * 1..7. */ @@ -553,7 +550,7 @@ static void octeon_pci_initialize(void) /* * Affects PCI performance when OCTEON services reads to its - * BAR1/BAR2. Refer to Section 10.6.1. The recommended values are + * 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 @@ -589,15 +586,16 @@ static int __init octeon_pci_setup(void) else octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_BIG; - /* 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; 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"); @@ -620,12 +618,10 @@ static int __init octeon_pci_setup(void) * before the readl()'s below. We don't want BAR2 overlapping * with BAR0/BAR1 during these reads. */ - octeon_npi_write32(CVMX_NPI_PCI_CFG08, 0); - octeon_npi_write32(CVMX_NPI_PCI_CFG09, 0x80); - - /* Disable the BAR1 movable mappings */ - for (index = 0; index < 32; index++) - octeon_npi_write32(CVMX_NPI_PCI_BAR1_INDEXX(index), 0); + 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 */ @@ -639,6 +635,25 @@ static int __init octeon_pci_setup(void) 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) - @@ -654,6 +669,27 @@ static int __init octeon_pci_setup(void) 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) + @@ -669,6 +705,13 @@ static int __init octeon_pci_setup(void) * 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; } diff --git a/arch/mips/pci/pci-rc32434.c b/arch/mips/pci/pci-rc32434.c index 71f7d27b0d4..7f6ce6d734c 100644 --- a/arch/mips/pci/pci-rc32434.c +++ b/arch/mips/pci/pci-rc32434.c @@ -33,7 +33,7 @@ #include <asm/mach-rc32434/rc32434.h> #include <asm/mach-rc32434/pci.h> -#define PCI_ACCESS_READ 0 +#define PCI_ACCESS_READ 0 #define PCI_ACCESS_WRITE 1 /* define an unsigned array for the PCI registers */ @@ -53,7 +53,6 @@ static struct resource rc32434_res_pci_mem1 = { .start = 0x50000000, .end = 0x5FFFFFFF, .flags = IORESOURCE_MEM, - .parent = &rc32434_res_pci_mem1, .sibling = NULL, .child = &rc32434_res_pci_mem2 }; @@ -82,11 +81,11 @@ extern struct pci_ops rc32434_pci_ops; #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 \ +#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 \ +#define PCI_IO2_END \ (PCI_ADDR_START + (2 * CPUTOPCI_MEM_WIN) + (2 * CPUTOPCI_IO_WIN) - 1) struct pci_controller rc32434_controller2; @@ -118,7 +117,7 @@ static int __init rc32434_pcibridge_init(void) if (!((pcicvalue == PCIM_H_EA) || (pcicvalue == PCIM_H_IA_FIX) || (pcicvalue == PCIM_H_IA_RR))) { - pr_err(KERN_ERR "PCI init error!!!\n"); + pr_err("PCI init error!!!\n"); /* Not in Host Mode, return ERROR */ return -1; } @@ -215,7 +214,7 @@ static int __init rc32434_pci_init(void) rc32434_pcibridge_init(); io_map_base = ioremap(rc32434_res_pci_io1.start, - rc32434_res_pci_io1.end - rc32434_res_pci_io1.start + 1); + resource_size(&rc32434_res_pci_io1)); if (!io_map_base) return -ENOMEM; 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 ada24e6f951..fc634aeda4a 100644 --- a/arch/mips/pci/pci-sb1250.c +++ b/arch/mips/pci/pci-sb1250.c @@ -37,6 +37,7 @@ #include <linux/mm.h> #include <linux/console.h> #include <linux/tty.h> +#include <linux/vt.h> #include <asm/io.h> @@ -54,9 +55,9 @@ 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; @@ -212,7 +213,7 @@ static int __init sb1250_pcibios_init(void) uint64_t reg; /* CFE will assign PCI resources */ - pci_probe_only = 1; + pci_set_flags(PCI_PROBE_ONLY); /* Avoid ISA compat ranges. */ PCIBIOS_MIN_IO = 0x00008000UL; @@ -238,7 +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; } @@ -254,7 +255,7 @@ static int __init sb1250_pcibios_init(void) * XXX ehs: Should this happen in PCI Device mode? */ io_map_base = ioremap(A_PHYS_LDTPCI_IO_MATCH_BYTES, 1024 * 1024); - sb1250_controller.io_map_base = io_map_base; + sb1250_controller.io_map_base = (unsigned long)io_map_base; set_io_port_base((unsigned long)io_map_base); #ifdef CONFIG_SIBYTE_HAS_LDT @@ -282,7 +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 index a5807406a7f..a032ae0a533 100644 --- a/arch/mips/pci/pci-tx4927.c +++ b/arch/mips/pci/pci-tx4927.c @@ -85,7 +85,7 @@ void __init tx4927_setup_pcierr_irq(void) { if (request_irq(TXX9_IRQ_BASE + TX4927_IR_PCIERR, tx4927_pcierr_interrupt, - IRQF_DISABLED, "PCI error", + 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 index 20e45f30b2e..141bba56248 100644 --- a/arch/mips/pci/pci-tx4938.c +++ b/arch/mips/pci/pci-tx4938.c @@ -136,7 +136,7 @@ void __init tx4938_setup_pcierr_irq(void) { if (request_irq(TXX9_IRQ_BASE + TX4938_IR_PCIERR, tx4927_pcierr_interrupt, - IRQF_DISABLED, "PCI error", + 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 index 9ef840693ba..c10fbf2a19d 100644 --- a/arch/mips/pci/pci-tx4939.c +++ b/arch/mips/pci/pci-tx4939.c @@ -101,7 +101,7 @@ void __init tx4939_setup_pcierr_irq(void) { if (request_irq(TXX9_IRQ_BASE + TX4939_IR_PCIERR, tx4927_pcierr_interrupt, - IRQF_DISABLED, "PCI error", + 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 56525711f8b..157c7715b7c 100644 --- a/arch/mips/pci/pci-vr41xx.c +++ b/arch/mips/pci/pci-vr41xx.c @@ -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, }; @@ -148,7 +148,7 @@ 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); @@ -281,7 +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 */ @@ -305,7 +305,7 @@ static int __init vr41xx_pciu_init(void) struct resource *res = vr41xx_pci_controller.io_resource; master = setup->master_io; io_map_base = ioremap(master->bus_base_address, - res->end - res->start + 1); + resource_size(res)); if (!io_map_base) return -EBUSY; diff --git a/arch/mips/pci/pci-vr41xx.h b/arch/mips/pci/pci-vr41xx.h index 6b1ae2eb1c0..e6b4a1b969f 100644 --- a/arch/mips/pci/pci-vr41xx.h +++ b/arch/mips/pci/pci-vr41xx.h @@ -1,7 +1,7 @@ /* * pci-vr41xx.h, Include file for PCI Control Unit of the NEC VR4100 series. * - * Copyright (C) 2002 MontaVista Software Inc. + * Copyright (C) 2002 MontaVista Software Inc. * Author: Yoichi Yuasa <source@mvista.com> * Copyright (C) 2004-2005 Yoichi Yuasa <yuasa@linux-mips.org> * 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 0357946f30e..00000000000 --- a/arch/mips/pci/pci-yosemite.c +++ /dev/null @@ -1,66 +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 = { - .start = 0xe0000000UL, - .end = 0xe3ffffffUL, - .name = "Titan PCI MEM", - .flags = 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 = { - .start = 0x00001000UL, - .end = TITAN_IO_SIZE - 1, - .name = "Titan IO MEM", - .flags = 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 9a11c222689..1bf60b12737 100644 --- a/arch/mips/pci/pci.c +++ b/arch/mips/pci/pci.c @@ -1,29 +1,29 @@ /* - * 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/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. @@ -49,8 +49,8 @@ static int pci_initialized; * 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, +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; @@ -73,28 +73,36 @@ pcibios_align_resource(void *data, struct resource *res, start = PCIBIOS_MIN_MEM + hose->mem_resource->start; } - res->start = start; + return start; } -static void __devinit pcibios_scanbus(struct pci_controller *hose) +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_probe_only) + if (hose->get_busno && pci_has_flag(PCI_PROBE_ONLY)) next_busno = (*hose->get_busno)(); - bus = pci_scan_bus(next_busno, hose->pci_ops, hose); + 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->subordinate + 1; + 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) { @@ -102,21 +110,76 @@ static void __devinit pcibios_scanbus(struct pci_controller *hose) need_domain_info = 1; } - if (!pci_probe_only) { + if (!pci_has_flag(PCI_PROBE_ONLY)) { pci_bus_size_bridges(bus); pci_bus_assign_resources(bus); - pci_enable_bridges(bus); } } } +#ifdef CONFIG_OF +void pci_load_of_ranges(struct pci_controller *hose, struct device_node *node) +{ + 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); + } +} + +struct device_node *pcibios_get_phb_of_node(struct pci_bus *bus) +{ + struct pci_controller *hose = bus->sysdata; + + return of_node_get(hose->of_node); +} +#endif + static DEFINE_MUTEX(pci_scan_mutex); -void __devinit register_pci_controller(struct pci_controller *hose) +void register_pci_controller(struct pci_controller *hose) { - if (request_resource(&iomem_resource, hose->mem_resource) < 0) + struct resource *parent; + + parent = hose->mem_resource->parent; + if (!parent) + parent = &iomem_resource; + + if (request_resource(parent, hose->mem_resource) < 0) goto out; - if (request_resource(&ioport_resource, hose->io_resource) < 0) { + + 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; } @@ -125,7 +188,7 @@ void __devinit register_pci_controller(struct pci_controller *hose) hose_tail = &hose->next; /* - * Do not panic here but later - this might hapen before console init. + * Do not panic here but later - this might happen before console init. */ if (!hose->io_map_base) { printk(KERN_WARNING @@ -149,10 +212,32 @@ out: "Skipping PCI bus scan due to resource conflict\n"); } +static void __init pcibios_set_cache_line_size(void) +{ + 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); + + pci_dfl_cache_line_size = lsize >> 2; + + pr_debug("PCI: pci_cache_line_size set to %d bytes\n", lsize); +} + static int __init pcibios_init(void) { struct pci_controller *hose; + pcibios_set_cache_line_size(); + /* Scan all of the recorded PCI controllers. */ for (hose = hose_head; hose; hose = hose->next) pcibios_scanbus(hose); @@ -204,30 +289,9 @@ static int pcibios_enable_resources(struct pci_dev *dev, int mask) 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. - */ -static 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) @@ -240,97 +304,18 @@ int pcibios_enable_device(struct pci_dev *dev, int mask) return pcibios_plat_dev_init(dev); } -static void 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_PCI_FIXED) - 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) { - 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 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; -} - -void __devinit -pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, - struct pci_bus_region *region) -{ - 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; -} - -#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 int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, enum pci_mmap_state mmap_state, int write_combine) @@ -356,9 +341,9 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, vma->vm_end - vma->vm_start, vma->vm_page_prot); } -char * (*pcibios_plat_setup)(char *str) __devinitdata; +char * (*pcibios_plat_setup)(char *str) __initdata; -char *__devinit pcibios_setup(char *str) +char *__init pcibios_setup(char *str) { if (pcibios_plat_setup) return pcibios_plat_setup(str); diff --git a/arch/mips/pci/pcie-octeon.c b/arch/mips/pci/pcie-octeon.c index 6aa5c542d52..5e36c33e554 100644 --- a/arch/mips/pci/pcie-octeon.c +++ b/arch/mips/pci/pcie-octeon.c @@ -3,7 +3,7 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 2007, 2008 Cavium Networks + * Copyright (C) 2007, 2008, 2009, 2010, 2011 Cavium Networks */ #include <linux/kernel.h> #include <linux/init.h> @@ -11,22 +11,39 @@ #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 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 */ @@ -57,7 +74,7 @@ union cvmx_pcie_address { 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 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 */ @@ -68,13 +85,17 @@ union cvmx_pcie_address { 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 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. @@ -145,37 +166,54 @@ static inline uint64_t cvmx_pcie_get_mem_size(int pcie_port) * 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 + * @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) { - 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; + 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 + * @pcie_port: PCIe port to write to * @cfg_offset: Address to write - * @val: Value to write + * @val: Value to write */ static void cvmx_pcie_cfgx_write(int pcie_port, uint32_t cfg_offset, uint32_t val) { - 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); + 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); + } } /** @@ -184,7 +222,7 @@ static void cvmx_pcie_cfgx_write(int pcie_port, uint32_t cfg_offset, * @pcie_port: PCIe port to access * @bus: Sub bus * @dev: Device ID - * @fn: Device sub function + * @fn: Device sub function * @reg: Register to access * * Returns 64bit Octeon IO address @@ -221,7 +259,7 @@ static inline uint64_t __cvmx_pcie_build_config_addr(int pcie_port, int bus, * @pcie_port: PCIe port the device is on * @bus: Sub bus * @dev: Device ID - * @fn: Device sub function + * @fn: Device sub function * @reg: Register to access * * Returns Result of the read @@ -243,7 +281,7 @@ static uint8_t cvmx_pcie_config_read8(int pcie_port, int bus, int dev, * @pcie_port: PCIe port the device is on * @bus: Sub bus * @dev: Device ID - * @fn: Device sub function + * @fn: Device sub function * @reg: Register to access * * Returns Result of the read @@ -265,7 +303,7 @@ static uint16_t cvmx_pcie_config_read16(int pcie_port, int bus, int dev, * @pcie_port: PCIe port the device is on * @bus: Sub bus * @dev: Device ID - * @fn: Device sub function + * @fn: Device sub function * @reg: Register to access * * Returns Result of the read @@ -287,7 +325,7 @@ static uint32_t cvmx_pcie_config_read32(int pcie_port, int bus, int dev, * @pcie_port: PCIe port the device is on * @bus: Sub bus * @dev: Device ID - * @fn: Device sub function + * @fn: Device sub function * @reg: Register to access * @val: Value to write */ @@ -306,7 +344,7 @@ static void cvmx_pcie_config_write8(int pcie_port, int bus, int dev, int fn, * @pcie_port: PCIe port the device is on * @bus: Sub bus * @dev: Device ID - * @fn: Device sub function + * @fn: Device sub function * @reg: Register to access * @val: Value to write */ @@ -325,7 +363,7 @@ static void cvmx_pcie_config_write16(int pcie_port, int bus, int dev, int fn, * @pcie_port: PCIe port the device is on * @bus: Sub bus * @dev: Device ID - * @fn: Device sub function + * @fn: Device sub function * @reg: Register to access * @val: Value to write */ @@ -346,7 +384,6 @@ static void cvmx_pcie_config_write32(int pcie_port, int bus, int dev, int fn, static void __cvmx_pcie_rc_initialize_config_space(int pcie_port) { union cvmx_pciercx_cfg030 pciercx_cfg030; - union cvmx_npei_ctl_status2 npei_ctl_status2; union cvmx_pciercx_cfg070 pciercx_cfg070; union cvmx_pciercx_cfg001 pciercx_cfg001; union cvmx_pciercx_cfg032 pciercx_cfg032; @@ -363,21 +400,21 @@ static void __cvmx_pcie_rc_initialize_config_space(int pcie_port) /* 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)); - /* - * Max payload size = 128 bytes for best Octeon DMA - * performance. - */ - pciercx_cfg030.s.mps = 0; + + 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; + } /* - * Max read request size = 128 bytes for best Octeon DMA - * performance. + * Enable relaxed order processing. This will allow devices to + * affect read response ordering. */ - pciercx_cfg030.s.mrrs = 0; - /* Enable relaxed ordering. */ pciercx_cfg030.s.ro_en = 1; - /* Enable no snoop. */ + /* Enable no snoop processing. Not used by Octeon */ pciercx_cfg030.s.ns_en = 1; /* Correctable error reporting enable. */ pciercx_cfg030.s.ce_en = 1; @@ -387,46 +424,67 @@ static void __cvmx_pcie_rc_initialize_config_space(int pcie_port) 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); + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG030(pcie_port), pciercx_cfg030.u32); - /* - * 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 = 0; - /* Max read request size = 128 bytes for best Octeon DMA performance */ - npei_ctl_status2.s.mrrs = 0; - cvmx_write_csr(CVMX_PEXP_NPEI_CTL_STATUS2, npei_ctl_status2.u64); + + 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.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); + 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]) + * 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.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); + 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) */ @@ -434,14 +492,11 @@ static void __cvmx_pcie_rc_initialize_config_space(int pcie_port) /* 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); - /* Entrance Latencies (PCIE*_CFG451[L0EL,L1EL]) */ + /* 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 @@ -456,8 +511,8 @@ static void __cvmx_pcie_rc_initialize_config_space(int pcie_port) 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); + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG006(pcie_port), pciercx_cfg006.u32); + /* * Memory-mapped I/O BAR (PCIERCn_CFG008) @@ -467,8 +522,8 @@ static void __cvmx_pcie_rc_initialize_config_space(int pcie_port) 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); + cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG008(pcie_port), pciercx_cfg008.u32); + /* * Prefetchable BAR (PCIERCn_CFG009,PCIERCn_CFG010,PCIERCn_CFG011) @@ -476,72 +531,51 @@ static void __cvmx_pcie_rc_initialize_config_space(int pcie_port) * 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.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); + 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)); - /* System error on correctable error enable. */ - pciercx_cfg035.s.secee = 1; - /* System error on fatal error enable. */ - pciercx_cfg035.s.sefee = 1; - /* System error on non-fatal error enable. */ - pciercx_cfg035.s.senfee = 1; - /* PME interrupt enable. */ - pciercx_cfg035.s.pmeie = 1; - cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG035(pcie_port), - pciercx_cfg035.u32); + */ + 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)); - /* Correctable error reporting enable. */ - pciercx_cfg075.s.cere = 1; - /* Non-fatal error reporting enable. */ - pciercx_cfg075.s.nfere = 1; - /* Fatal error reporting enable. */ - pciercx_cfg075.s.fere = 1; - cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG075(pcie_port), - pciercx_cfg075.u32); + 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], + /* + * 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)); - /* Hot-plug interrupt enable. */ - pciercx_cfg034.s.hpint_en = 1; - /* Data Link Layer state changed enable */ - pciercx_cfg034.s.dlls_en = 1; - /* Command completed interrupt enable. */ - pciercx_cfg034.s.ccint_en = 1; - cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG034(pcie_port), - pciercx_cfg034.u32); + 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 link. This function takes a PCIe + * 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. * @@ -549,7 +583,7 @@ static void __cvmx_pcie_rc_initialize_config_space(int pcie_port) * * Returns Zero on success */ -static int __cvmx_pcie_rc_initialize_link(int pcie_port) +static int __cvmx_pcie_rc_initialize_link_gen1(int pcie_port) { uint64_t start_cycle; union cvmx_pescx_ctl_status pescx_ctl_status; @@ -558,18 +592,15 @@ static int __cvmx_pcie_rc_initialize_link(int pcie_port) union cvmx_pciercx_cfg448 pciercx_cfg448; /* Set the lane width */ - pciercx_cfg452.u32 = - cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG452(pcie_port)); + 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) { + 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 { + 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); + 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 @@ -578,19 +609,15 @@ static int __cvmx_pcie_rc_initialize_link(int pcie_port) */ 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.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); + 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); + cvmx_write_csr(CVMX_PESCX_CTL_STATUS(pcie_port), pescx_ctl_status.u64); } /* Bring up the link */ @@ -606,24 +633,18 @@ static int __cvmx_pcie_rc_initialize_link(int pcie_port) __cvmx_helper_errata_qlm_disable_2nd_order_cdr(0); /* Wait for the link to come up */ - cvmx_dprintf("PCIe: Waiting for port %d link\n", pcie_port); start_cycle = cvmx_get_cycle(); do { - if (cvmx_get_cycle() - start_cycle > - 2 * cvmx_sysinfo_get()->cpu_clock_hz) { - cvmx_dprintf("PCIe: Port %d link timeout\n", - pcie_port); + 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)); + pciercx_cfg032.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG032(pcie_port)); } while (pciercx_cfg032.s.dlla == 0); - /* Display the link status */ - cvmx_dprintf("PCIe: Port %d link active, %d lanes\n", pcie_port, - pciercx_cfg032.s.nlw); + /* 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 @@ -633,8 +654,7 @@ static int __cvmx_pcie_rc_initialize_link(int pcie_port) * 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)); + 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; @@ -649,23 +669,32 @@ static int __cvmx_pcie_rc_initialize_link(int pcie_port) pciercx_cfg448.s.rtl = 258; break; } - cvmx_pcie_cfgx_write(pcie_port, CVMX_PCIERCX_CFG448(pcie_port), - pciercx_cfg448.u32); + 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 port for use in host(RC) mode. It doesn't + * 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(int pcie_port) +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; @@ -674,15 +703,17 @@ static int cvmx_pcie_rc_initialize(int pcie_port) 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: ERROR: cvmx_pcie_rc_initialize() called " - "on port0, but port0 is not in host mode\n"); + cvmx_dprintf("PCIe: Port %d in endpoint mode\n", pcie_port); return -1; } @@ -693,9 +724,7 @@ static int cvmx_pcie_rc_initialize(int pcie_port) 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"); + cvmx_dprintf("PCIe: ERROR: cvmx_pcie_rc_initialize() called on port1, but port1 is disabled\n"); return -1; } } @@ -724,7 +753,7 @@ static int cvmx_pcie_rc_initialize(int pcie_port) * 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. + * 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); @@ -737,13 +766,10 @@ static int cvmx_pcie_rc_initialize(int pcie_port) 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); + 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); + cvmx_write_csr(CVMX_CIU_SOFT_PRST1, ciu_soft_prst.u64); /* Wait until pcie resets the ports. */ udelay(2000); } @@ -773,11 +799,9 @@ static int cvmx_pcie_rc_initialize(int pcie_port) /* Reset the port */ ciu_soft_prst.s.soft_prst = 1; if (pcie_port) - cvmx_write_csr(CVMX_CIU_SOFT_PRST1, - ciu_soft_prst.u64); + cvmx_write_csr(CVMX_CIU_SOFT_PRST1, ciu_soft_prst.u64); else - cvmx_write_csr(CVMX_CIU_SOFT_PRST, - ciu_soft_prst.u64); + cvmx_write_csr(CVMX_CIU_SOFT_PRST, ciu_soft_prst.u64); /* Wait until pcie resets the ports. */ udelay(2000); } @@ -799,25 +823,21 @@ static int cvmx_pcie_rc_initialize(int pcie_port) */ 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)) { + /* + * 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.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. + 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); + union cvmx_pescx_ctl_status2, pclk_run, ==, 1, 10000)) { + cvmx_dprintf("PCIe: Port %d isn't clocked, skipping.\n", pcie_port); return -1; } } @@ -827,30 +847,26 @@ static int cvmx_pcie_rc_initialize(int pcie_port) * 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)); + 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); + 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. + * 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)); + 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", + 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)); + 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)); @@ -859,50 +875,37 @@ static int cvmx_pcie_rc_initialize(int pcie_port) __cvmx_pcie_rc_initialize_config_space(pcie_port); /* Bring the link up */ - if (__cvmx_pcie_rc_initialize_link(pcie_port)) { - cvmx_dprintf - ("PCIe: ERROR: cvmx_pcie_rc_initialize_link() failed\n"); + 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); - /* Allow 16 words to combine */ - npei_mem_access_ctl.s.max_word = 0; - /* Wait up to 127 cycles for more data */ - npei_mem_access_ctl.s.timer = 127; + 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; - /* Port the request is sent to. */ - mem_access_subid.s.port = pcie_port; - /* Due to an errata on pass 1 chips, no merging is allowed. */ - mem_access_subid.s.nmerge = 1; - /* Endian-swap for Reads. */ - mem_access_subid.s.esr = 1; - /* Endian-swap for Writes. */ - mem_access_subid.s.esw = 1; - /* No Snoop for Reads. */ - mem_access_subid.s.nsr = 1; - /* No Snoop for Writes. */ - mem_access_subid.s.nsw = 1; - /* Disable Relaxed Ordering for Reads. */ - mem_access_subid.s.ror = 0; - /* Disable Relaxed Ordering for Writes. */ - mem_access_subid.s.row = 0; - /* PCIe Adddress Bits <63:34>. */ - mem_access_subid.s.ba = 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); - /* Set each SUBID to extend the addressable range */ - mem_access_subid.s.ba += 1; + 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 */ } /* @@ -918,12 +921,30 @@ static int cvmx_pcie_rc_initialize(int pcie_port) /* Set Octeon's BAR0 to decode 0-16KB. It overlaps with Bar2 */ cvmx_write_csr(CVMX_PESCX_P2N_BAR0_START(pcie_port), 0); - /* - * Disable Octeon's BAR1. It isn't needed in RC mode since - * BAR2 maps all of memory. BAR2 also maps 256MB-512MB into - * the 2nd 256MB of memory. - */ - cvmx_write_csr(CVMX_PESCX_P2N_BAR1_START(pcie_port), -1); + /* 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 @@ -965,22 +986,482 @@ static int cvmx_pcie_rc_initialize(int pcie_port) 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; } -/* Above was cvmx-pcie.c, below original pcie.c */ +/** + * 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. + * 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. + * as it goes through each bridge. * Returns Interrupt number for the device */ int __init octeon_pcie_pcibios_map_irq(const struct pci_dev *dev, @@ -1000,11 +1481,12 @@ int __init octeon_pcie_pcibios_map_irq(const struct pci_dev *dev, */ 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 + /* + * 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 == 0) && + if ((dev->bus->number == 1) && (dev->vendor == 0x10b5) && (dev->device == 0x8114)) { /* * The pin field is one based, not zero. We @@ -1021,39 +1503,73 @@ int __init octeon_pcie_pcibios_map_irq(const struct pci_dev *dev, 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 * - * @bus: - * @devfn: - * @reg: - * @size: - * @val: - * Returns */ -static inline int octeon_pcie_read_config(int pcie_port, struct pci_bus *bus, - unsigned int devfn, int reg, int size, - u32 *val) +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. + * matches the software one */ if (bus->parent == NULL) { - 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); + 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); + } } } @@ -1089,29 +1605,52 @@ static inline int octeon_pcie_read_config(int pcie_port, struct pci_bus *bus, */ #if 1 /* Use this option if you aren't using either slot */ - if (bus_number == 1) + 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 == 1) && (devfn >> 3 != 2)) + 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 == 1) && (devfn >> 3 != 3)) + 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 == 1) && + 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 @@ -1125,26 +1664,48 @@ static inline int octeon_pcie_read_config(int pcie_port, struct pci_bus *bus, __write_64bit_c0_register($11, 7, cvmmemctl.u64); } - switch (size) { - case 4: - *val = cvmx_pcie_config_read32(pcie_port, bus_number, - devfn >> 3, devfn & 0x7, reg); + 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); + 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); + case 1: + *val = cvmx_pcie_config_read8(pcie_port, bus_number, + devfn >> 3, devfn & 0x7, reg); break; - default: - return PCIBIOS_FUNC_NOT_SUPPORTED; - } + 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_64bit_c0_register($11, 7, cvmmemctl_save.u64); + write_c0_cvmmemctl(cvmmemctl_save.u64); return PCIBIOS_SUCCESSFUL; } @@ -1160,42 +1721,56 @@ static int octeon_pcie1_read_config(struct pci_bus *bus, unsigned int devfn, 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 - * - * @bus: - * @devfn: - * @reg: - * @size: - * @val: - * Returns */ -static inline int octeon_pcie_write_config(int pcie_port, struct pci_bus *bus, - unsigned int devfn, int reg, - int size, u32 val) +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); - return PCIBIOS_SUCCESSFUL; + break; case 2: cvmx_pcie_config_write16(pcie_port, bus_number, devfn >> 3, devfn & 0x7, reg, val); - return PCIBIOS_SUCCESSFUL; + break; case 1: cvmx_pcie_config_write8(pcie_port, bus_number, devfn >> 3, devfn & 0x7, reg, val); - return PCIBIOS_SUCCESSFUL; + 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_FUNC_NOT_SUPPORTED; + return PCIBIOS_SUCCESSFUL; } static int octeon_pcie0_write_config(struct pci_bus *bus, unsigned int devfn, @@ -1210,6 +1785,12 @@ static int octeon_pcie1_write_config(struct pci_bus *bus, unsigned int devfn, 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, @@ -1252,6 +1833,35 @@ static struct pci_controller octeon_pcie1_controller = { .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 @@ -1260,19 +1870,27 @@ static struct pci_controller octeon_pcie1_controller = { */ static int __init octeon_pcie_setup(void) { - union cvmx_npei_ctl_status npei_ctl_status; 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; - /* Use the PCIe based DMA mappings */ - octeon_dma_bar_type = OCTEON_DMA_BAR_TYPE_PCIE; - /* * PCIe I/O range. It is based on port 0 but includes up until * port 1's end. @@ -1283,11 +1901,43 @@ static int __init octeon_pcie_setup(void) cvmx_pcie_get_io_base_address(1) - cvmx_pcie_get_io_base_address(0) + cvmx_pcie_get_io_size(1) - 1; - npei_ctl_status.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_CTL_STATUS); - if (npei_ctl_status.s.host_mode) { + /* + * 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); @@ -1316,57 +1966,134 @@ static int __init octeon_pcie_setup(void) 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; + } } - /* 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 npei_dbg_data; - npei_dbg_data.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_DBG_DATA); - if (npei_dbg_data.cn52xx.qlm0_link_width) - return 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; } - pr_notice("PCIe: Initializing port 1\n"); - result = cvmx_pcie_rc_initialize(1); - if (result == 0) { - /* Memory offsets are physical addresses */ - octeon_pcie1_controller.mem_offset = - cvmx_pcie_get_mem_base_address(1); - /* IO offsets are Mips virtual addresses */ - octeon_pcie1_controller.io_map_base = - CVMX_ADD_IO_SEG(cvmx_pcie_get_io_base_address(1)); - 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; - register_pci_controller(&octeon_pcie1_controller); + 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); |