diff options
Diffstat (limited to 'arch/mips/pci/ops-emma2rh.c')
| -rw-r--r-- | arch/mips/pci/ops-emma2rh.c | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/arch/mips/pci/ops-emma2rh.c b/arch/mips/pci/ops-emma2rh.c deleted file mode 100644 index 710aef5c070e..000000000000 --- a/arch/mips/pci/ops-emma2rh.c +++ /dev/null @@ -1,182 +0,0 @@ -/* - * Copyright (C) NEC Electronics Corporation 2004-2006 - * - * This file is based on the arch/mips/pci/ops-vr41xx.c - * - * Copyright 2001 MontaVista Software Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/types.h> - -#include <asm/addrspace.h> -#include <asm/debug.h> - -#include <asm/emma/emma2rh.h> - -#define RTABORT (0x1<<9) -#define RMABORT (0x1<<10) -#define EMMA2RH_PCI_SLOT_NUM 9 /* 0000:09.0 is final PCI device */ - -/* - * access config space - */ - -static int check_args(struct pci_bus *bus, u32 devfn, u32 * bus_num) -{ - /* check if the bus is top-level */ - if (bus->parent != NULL) { - *bus_num = bus->number; - db_assert(bus_num != NULL); - } else - *bus_num = 0; - - if (*bus_num == 0) { - /* Type 0 */ - if (PCI_SLOT(devfn) >= 10) - return PCIBIOS_DEVICE_NOT_FOUND; - } else { - /* Type 1 */ - if ((*bus_num >= 64) || (PCI_SLOT(devfn) >= 16)) - return PCIBIOS_DEVICE_NOT_FOUND; - } - return 0; -} - -static inline int set_pci_configuration_address(unsigned char bus_num, - unsigned int devfn, int where) -{ - u32 config_win0; - - emma2rh_out32(EMMA2RH_PCI_INT, ~RMABORT); - if (bus_num == 0) - /* - * Type 0 configuration - */ - config_win0 = (1 << (22 + PCI_SLOT(devfn))) | (5 << 9); - else - /* - * Type 1 configuration - */ - config_win0 = (bus_num << 26) | (PCI_SLOT(devfn) << 22) | - (1 << 15) | (5 << 9); - - emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, config_win0); - - return 0; -} - -static int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where, - int size, uint32_t * val) -{ - u32 bus_num; - u32 base = KSEG1ADDR(EMMA2RH_PCI_CONFIG_BASE); - u32 backup_win0; - u32 data; - - *val = 0xffffffffU; - - if (check_args(bus, devfn, &bus_num) == PCIBIOS_DEVICE_NOT_FOUND) - return PCIBIOS_DEVICE_NOT_FOUND; - - backup_win0 = emma2rh_in32(EMMA2RH_PCI_IWIN0_CTR); - - if (set_pci_configuration_address(bus_num, devfn, where) < 0) - return PCIBIOS_DEVICE_NOT_FOUND; - - data = - *(volatile u32 *)(base + (PCI_FUNC(devfn) << 8) + - (where & 0xfffffffc)); - - switch (size) { - case 1: - *val = (data >> ((where & 3) << 3)) & 0xffU; - break; - case 2: - *val = (data >> ((where & 2) << 3)) & 0xffffU; - break; - case 4: - *val = data; - break; - default: - emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, backup_win0); - return PCIBIOS_FUNC_NOT_SUPPORTED; - } - - emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, backup_win0); - - if (emma2rh_in32(EMMA2RH_PCI_INT) & RMABORT) - return PCIBIOS_DEVICE_NOT_FOUND; - - return PCIBIOS_SUCCESSFUL; -} - -static int pci_config_write(struct pci_bus *bus, unsigned int devfn, int where, - int size, u32 val) -{ - u32 bus_num; - u32 base = KSEG1ADDR(EMMA2RH_PCI_CONFIG_BASE); - u32 backup_win0; - u32 data; - int shift; - - if (check_args(bus, devfn, &bus_num) == PCIBIOS_DEVICE_NOT_FOUND) - return PCIBIOS_DEVICE_NOT_FOUND; - - backup_win0 = emma2rh_in32(EMMA2RH_PCI_IWIN0_CTR); - - if (set_pci_configuration_address(bus_num, devfn, where) < 0) - return PCIBIOS_DEVICE_NOT_FOUND; - - /* read modify write */ - data = - *(volatile u32 *)(base + (PCI_FUNC(devfn) << 8) + - (where & 0xfffffffc)); - - switch (size) { - case 1: - shift = (where & 3) << 3; - data &= ~(0xffU << shift); - data |= ((val & 0xffU) << shift); - break; - case 2: - shift = (where & 2) << 3; - data &= ~(0xffffU << shift); - data |= ((val & 0xffffU) << shift); - break; - case 4: - data = val; - break; - default: - emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, backup_win0); - return PCIBIOS_FUNC_NOT_SUPPORTED; - } - *(volatile u32 *)(base + (PCI_FUNC(devfn) << 8) + - (where & 0xfffffffc)) = data; - - emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, backup_win0); - if (emma2rh_in32(EMMA2RH_PCI_INT) & RMABORT) - return PCIBIOS_DEVICE_NOT_FOUND; - - return PCIBIOS_SUCCESSFUL; -} - -struct pci_ops emma2rh_pci_ops = { - .read = pci_config_read, - .write = pci_config_write, -}; |