diff options
Diffstat (limited to 'arch/mips/pci/ops-tx4938.c')
| -rw-r--r-- | arch/mips/pci/ops-tx4938.c | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/arch/mips/pci/ops-tx4938.c b/arch/mips/pci/ops-tx4938.c deleted file mode 100644 index 44500708451..00000000000 --- a/arch/mips/pci/ops-tx4938.c +++ /dev/null @@ -1,198 +0,0 @@ -/* - * Define the pci_ops for the Toshiba rbtx4938 - * Copyright (C) 2000-2001 Toshiba Corporation - * - * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the - * terms of the GNU General Public License version 2. This program is - * licensed "as is" without any warranty of any kind, whether express - * or implied. - * - * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com) - */ -#include <linux/types.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/init.h> - -#include <asm/addrspace.h> -#include <asm/tx4938/rbtx4938.h> - -/* initialize in setup */ -struct resource pci_io_resource = { - .name = "pci IO space", - .start = 0, - .end = 0, - .flags = IORESOURCE_IO -}; - -/* initialize in setup */ -struct resource pci_mem_resource = { - .name = "pci memory space", - .start = 0, - .end = 0, - .flags = IORESOURCE_MEM -}; - -struct resource tx4938_pcic1_pci_io_resource = { - .name = "PCI1 IO", - .start = 0, - .end = 0, - .flags = IORESOURCE_IO -}; -struct resource tx4938_pcic1_pci_mem_resource = { - .name = "PCI1 mem", - .start = 0, - .end = 0, - .flags = IORESOURCE_MEM -}; - -static int mkaddr(int bus, int dev_fn, int where, int *flagsp) -{ - if (bus > 0) { - /* Type 1 configuration */ - tx4938_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) | - ((dev_fn & 0xff) << 0x08) | (where & 0xfc) | 1; - } else { - if (dev_fn >= PCI_DEVFN(TX4938_PCIC_MAX_DEVNU, 0)) - return -1; - - /* Type 0 configuration */ - tx4938_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) | - ((dev_fn & 0xff) << 0x08) | (where & 0xfc); - } - /* clear M_ABORT and Disable M_ABORT Int. */ - tx4938_pcicptr->pcistatus = - (tx4938_pcicptr->pcistatus & 0x0000ffff) | - (PCI_STATUS_REC_MASTER_ABORT << 16); - tx4938_pcicptr->pcimask &= ~PCI_STATUS_REC_MASTER_ABORT; - - return 0; -} - -static int check_abort(int flags) -{ - int code = PCIBIOS_SUCCESSFUL; - /* wait write cycle completion before checking error status */ - while (tx4938_pcicptr->pcicstatus & TX4938_PCIC_PCICSTATUS_IWB) - ; - if (tx4938_pcicptr->pcistatus & (PCI_STATUS_REC_MASTER_ABORT << 16)) { - tx4938_pcicptr->pcistatus = - (tx4938_pcicptr-> - pcistatus & 0x0000ffff) | (PCI_STATUS_REC_MASTER_ABORT - << 16); - tx4938_pcicptr->pcimask |= PCI_STATUS_REC_MASTER_ABORT; - code = PCIBIOS_DEVICE_NOT_FOUND; - } - return code; -} - -static int tx4938_pcibios_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * val) -{ - int flags, retval, dev, busno, func; - - dev = PCI_SLOT(devfn); - func = PCI_FUNC(devfn); - - /* check if the bus is top-level */ - if (bus->parent != NULL) - busno = bus->number; - else { - busno = 0; - } - - if (mkaddr(busno, devfn, where, &flags)) - return -1; - - switch (size) { - case 1: - *val = *(volatile u8 *) ((unsigned long) & tx4938_pcicptr->g2pcfgdata | -#ifdef __BIG_ENDIAN - ((where & 3) ^ 3)); -#else - (where & 3)); -#endif - break; - case 2: - *val = *(volatile u16 *) ((unsigned long) & tx4938_pcicptr->g2pcfgdata | -#ifdef __BIG_ENDIAN - ((where & 3) ^ 2)); -#else - (where & 3)); -#endif - break; - case 4: - *val = tx4938_pcicptr->g2pcfgdata; - break; - } - - retval = check_abort(flags); - if (retval == PCIBIOS_DEVICE_NOT_FOUND) - *val = 0xffffffff; - - return retval; -} - -static int tx4938_pcibios_write_config(struct pci_bus *bus, unsigned int devfn, int where, - int size, u32 val) -{ - int flags, dev, busno, func; - - busno = bus->number; - dev = PCI_SLOT(devfn); - func = PCI_FUNC(devfn); - - /* check if the bus is top-level */ - if (bus->parent != NULL) { - busno = bus->number; - } else { - busno = 0; - } - - if (mkaddr(busno, devfn, where, &flags)) - return -1; - - switch (size) { - case 1: - *(volatile u8 *) ((unsigned long) & tx4938_pcicptr->g2pcfgdata | -#ifdef __BIG_ENDIAN - ((where & 3) ^ 3)) = val; -#else - (where & 3)) = val; -#endif - break; - case 2: - *(volatile u16 *) ((unsigned long) & tx4938_pcicptr->g2pcfgdata | -#ifdef __BIG_ENDIAN - ((where & 0x3) ^ 0x2)) = val; -#else - (where & 3)) = val; -#endif - break; - case 4: - tx4938_pcicptr->g2pcfgdata = val; - break; - } - - return check_abort(flags); -} - -struct pci_ops tx4938_pci_ops = { - tx4938_pcibios_read_config, - tx4938_pcibios_write_config -}; - -struct pci_controller tx4938_pci_controller[] = { - /* h/w only supports devices 0x00 to 0x14 */ - { - .pci_ops = &tx4938_pci_ops, - .io_resource = &pci_io_resource, - .mem_resource = &pci_mem_resource, - }, - /* h/w only supports devices 0x00 to 0x14 */ - { - .pci_ops = &tx4938_pci_ops, - .io_resource = &tx4938_pcic1_pci_io_resource, - .mem_resource = &tx4938_pcic1_pci_mem_resource, - } -}; |