diff options
Diffstat (limited to 'arch/mips/pci/ops-tx4938.c')
| -rw-r--r-- | arch/mips/pci/ops-tx4938.c | 214 |
1 files changed, 0 insertions, 214 deletions
diff --git a/arch/mips/pci/ops-tx4938.c b/arch/mips/pci/ops-tx4938.c deleted file mode 100644 index a450c40..0000000 --- a/arch/mips/pci/ops-tx4938.c +++ /dev/null @@ -1,214 +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, - struct tx4938_pcic_reg *pcicptr) -{ - if (bus > 0) { - /* Type 1 configuration */ - 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 */ - pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) | - ((dev_fn & 0xff) << 0x08) | (where & 0xfc); - } - /* clear M_ABORT and Disable M_ABORT Int. */ - pcicptr->pcistatus = - (pcicptr->pcistatus & 0x0000ffff) | - (PCI_STATUS_REC_MASTER_ABORT << 16); - pcicptr->pcimask &= ~PCI_STATUS_REC_MASTER_ABORT; - - return 0; -} - -static int check_abort(struct tx4938_pcic_reg *pcicptr) -{ - int code = PCIBIOS_SUCCESSFUL; - /* wait write cycle completion before checking error status */ - while (pcicptr->pcicstatus & TX4938_PCIC_PCICSTATUS_IWB) - ; - if (pcicptr->pcistatus & (PCI_STATUS_REC_MASTER_ABORT << 16)) { - pcicptr->pcistatus = - (pcicptr-> - pcistatus & 0x0000ffff) | (PCI_STATUS_REC_MASTER_ABORT - << 16); - pcicptr->pcimask |= PCI_STATUS_REC_MASTER_ABORT; - code = PCIBIOS_DEVICE_NOT_FOUND; - } - return code; -} - -extern struct pci_controller tx4938_pci_controller[]; -extern struct tx4938_pcic_reg *get_tx4938_pcicptr(int ch); - -static struct tx4938_pcic_reg *pci_bus_to_pcicptr(struct pci_bus *bus) -{ - struct pci_controller *channel = bus->sysdata; - return get_tx4938_pcicptr(channel - &tx4938_pci_controller[0]); -} - -static int tx4938_pcibios_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * val) -{ - int retval, dev, busno, func; - struct tx4938_pcic_reg *pcicptr = pci_bus_to_pcicptr(bus); - void __iomem *cfgdata = - (void __iomem *)(unsigned long)&pcicptr->g2pcfgdata; - - 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, pcicptr)) - return -1; - - switch (size) { - case 1: -#ifdef __BIG_ENDIAN - cfgdata += (where & 3) ^ 3; -#else - cfgdata += where & 3; -#endif - *val = __raw_readb(cfgdata); - break; - case 2: -#ifdef __BIG_ENDIAN - cfgdata += (where & 2) ^ 2; -#else - cfgdata += where & 2; -#endif - *val = __raw_readw(cfgdata); - break; - case 4: - *val = __raw_readl(cfgdata); - break; - } - - retval = check_abort(pcicptr); - 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 dev, busno, func; - struct tx4938_pcic_reg *pcicptr = pci_bus_to_pcicptr(bus); - void __iomem *cfgdata = - (void __iomem *)(unsigned long)&pcicptr->g2pcfgdata; - - 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, pcicptr)) - return -1; - - switch (size) { - case 1: -#ifdef __BIG_ENDIAN - cfgdata += (where & 3) ^ 3; -#else - cfgdata += where & 3; -#endif - __raw_writeb(val, cfgdata); - break; - case 2: -#ifdef __BIG_ENDIAN - cfgdata += (where & 2) ^ 2; -#else - cfgdata += where & 2; -#endif - __raw_writew(val, cfgdata); - break; - case 4: - __raw_writel(val, cfgdata); - break; - } - - return check_abort(pcicptr); -} - -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, - } -}; |
