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Diffstat (limited to 'arch/mips/pci/ops-ddb5477.c')
-rw-r--r--arch/mips/pci/ops-ddb5477.c278
1 files changed, 0 insertions, 278 deletions
diff --git a/arch/mips/pci/ops-ddb5477.c b/arch/mips/pci/ops-ddb5477.c
deleted file mode 100644
index 8e57d4c5d90f..000000000000
--- a/arch/mips/pci/ops-ddb5477.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/***********************************************************************
- * Copyright 2001 MontaVista Software Inc.
- * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
- *
- * arch/mips/ddb5xxx/ddb5477/pci_ops.c
- * Define the pci_ops for DB5477.
- *
- * Much of the code is derived from the original DDB5074 port by
- * Geert Uytterhoeven <geert@sonycom.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- ***********************************************************************
- */
-
-/*
- * DDB5477 has two PCI channels, external PCI and IOPIC (internal)
- * Therefore we provide two sets of pci_ops.
- */
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-
-#include <asm/addrspace.h>
-#include <asm/debug.h>
-
-#include <asm/ddb5xxx/ddb5xxx.h>
-
-/*
- * config_swap structure records what set of pdar/pmr are used
- * to access pci config space. It also provides a place hold the
- * original values for future restoring.
- */
-struct pci_config_swap {
- u32 pdar;
- u32 pmr;
- u32 config_base;
- u32 config_size;
- u32 pdar_backup;
- u32 pmr_backup;
-};
-
-/*
- * On DDB5477, we have two sets of swap registers, for ext PCI and IOPCI.
- */
-struct pci_config_swap ext_pci_swap = {
- DDB_PCIW0,
- DDB_PCIINIT00,
- DDB_PCI0_CONFIG_BASE,
- DDB_PCI0_CONFIG_SIZE
-};
-struct pci_config_swap io_pci_swap = {
- DDB_IOPCIW0,
- DDB_PCIINIT01,
- DDB_PCI1_CONFIG_BASE,
- DDB_PCI1_CONFIG_SIZE
-};
-
-
-/*
- * access config space
- */
-static inline u32 ddb_access_config_base(struct pci_config_swap *swap, u32 bus, /* 0 means top level bus */
- u32 slot_num)
-{
- u32 pci_addr = 0;
- u32 pciinit_offset = 0;
- u32 virt_addr;
- u32 option;
-
- /* minimum pdar (window) size is 2MB */
- db_assert(swap->config_size >= (2 << 20));
-
- db_assert(slot_num < (1 << 5));
- db_assert(bus < (1 << 8));
-
- /* backup registers */
- swap->pdar_backup = ddb_in32(swap->pdar);
- swap->pmr_backup = ddb_in32(swap->pmr);
-
- /* set the pdar (pci window) register */
- ddb_set_pdar(swap->pdar, swap->config_base, swap->config_size, 32, /* 32 bit wide */
- 0, /* not on local memory bus */
- 0); /* not visible from PCI bus (N/A) */
-
- /*
- * calcuate the absolute pci config addr;
- * according to the spec, we start scanning from adr:11 (0x800)
- */
- if (bus == 0) {
- /* type 0 config */
- pci_addr = 0x800 << slot_num;
- } else {
- /* type 1 config */
- pci_addr = (bus << 16) | (slot_num << 11);
- }
-
- /*
- * if pci_addr is less than pci config window size, we set
- * pciinit_offset to 0 and adjust the virt_address.
- * Otherwise we will try to adjust pciinit_offset.
- */
- if (pci_addr < swap->config_size) {
- virt_addr = KSEG1ADDR(swap->config_base + pci_addr);
- pciinit_offset = 0;
- } else {
- db_assert((pci_addr & (swap->config_size - 1)) == 0);
- virt_addr = KSEG1ADDR(swap->config_base);
- pciinit_offset = pci_addr;
- }
-
- /* set the pmr register */
- option = DDB_PCI_ACCESS_32;
- if (bus != 0)
- option |= DDB_PCI_CFGTYPE1;
- ddb_set_pmr(swap->pmr, DDB_PCICMD_CFG, pciinit_offset, option);
-
- return virt_addr;
-}
-
-static inline void ddb_close_config_base(struct pci_config_swap *swap)
-{
- ddb_out32(swap->pdar, swap->pdar_backup);
- ddb_out32(swap->pmr, swap->pmr_backup);
-}
-
-static int read_config_dword(struct pci_config_swap *swap,
- struct pci_bus *bus, u32 devfn, u32 where,
- u32 * val)
-{
- u32 bus_num, slot_num, func_num;
- u32 base;
-
- db_assert((where & 3) == 0);
- db_assert(where < (1 << 8));
-
- /* check if the bus is top-level */
- if (bus->parent != NULL) {
- bus_num = bus->number;
- db_assert(bus_num != 0);
- } else {
- bus_num = 0;
- }
-
- slot_num = PCI_SLOT(devfn);
- func_num = PCI_FUNC(devfn);
- base = ddb_access_config_base(swap, bus_num, slot_num);
- *val = *(volatile u32 *) (base + (func_num << 8) + where);
- ddb_close_config_base(swap);
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int read_config_word(struct pci_config_swap *swap,
- struct pci_bus *bus, u32 devfn, u32 where,
- u16 * val)
-{
- int status;
- u32 result;
-
- db_assert((where & 1) == 0);
-
- status = read_config_dword(swap, bus, devfn, where & ~3, &result);
- if (where & 2)
- result >>= 16;
- *val = result & 0xffff;
- return status;
-}
-
-static int read_config_byte(struct pci_config_swap *swap,
- struct pci_bus *bus, u32 devfn, u32 where,
- u8 * val)
-{
- int status;
- u32 result;
-
- status = read_config_dword(swap, bus, devfn, where & ~3, &result);
- if (where & 1)
- result >>= 8;
- if (where & 2)
- result >>= 16;
- *val = result & 0xff;
-
- return status;
-}
-
-static int write_config_dword(struct pci_config_swap *swap,
- struct pci_bus *bus, u32 devfn, u32 where,
- u32 val)
-{
- u32 bus_num, slot_num, func_num;
- u32 base;
-
- db_assert((where & 3) == 0);
- db_assert(where < (1 << 8));
-
- /* check if the bus is top-level */
- if (bus->parent != NULL) {
- bus_num = bus->number;
- db_assert(bus_num != 0);
- } else {
- bus_num = 0;
- }
-
- slot_num = PCI_SLOT(devfn);
- func_num = PCI_FUNC(devfn);
- base = ddb_access_config_base(swap, bus_num, slot_num);
- *(volatile u32 *) (base + (func_num << 8) + where) = val;
- ddb_close_config_base(swap);
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int write_config_word(struct pci_config_swap *swap,
- struct pci_bus *bus, u32 devfn, u32 where, u16 val)
-{
- int status, shift = 0;
- u32 result;
-
- db_assert((where & 1) == 0);
-
- status = read_config_dword(swap, bus, devfn, where & ~3, &result);
- if (status != PCIBIOS_SUCCESSFUL)
- return status;
-
- if (where & 2)
- shift += 16;
- result &= ~(0xffff << shift);
- result |= val << shift;
- return write_config_dword(swap, bus, devfn, where & ~3, result);
-}
-
-static int write_config_byte(struct pci_config_swap *swap,
- struct pci_bus *bus, u32 devfn, u32 where, u8 val)
-{
- int status, shift = 0;
- u32 result;
-
- status = read_config_dword(swap, bus, devfn, where & ~3, &result);
- if (status != PCIBIOS_SUCCESSFUL)
- return status;
-
- if (where & 2)
- shift += 16;
- if (where & 1)
- shift += 8;
- result &= ~(0xff << shift);
- result |= val << shift;
- return write_config_dword(swap, bus, devfn, where & ~3, result);
-}
-
-#define MAKE_PCI_OPS(prefix, rw, pciswap, star) \
-static int prefix##_##rw##_config(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 star val) \
-{ \
- if (size == 1) \
- return rw##_config_byte(pciswap, bus, devfn, where, (u8 star)val); \
- else if (size == 2) \
- return rw##_config_word(pciswap, bus, devfn, where, (u16 star)val); \
- /* Size must be 4 */ \
- return rw##_config_dword(pciswap, bus, devfn, where, val); \
-}
-
-MAKE_PCI_OPS(extpci, read, &ext_pci_swap, *)
-MAKE_PCI_OPS(extpci, write, &ext_pci_swap,)
-
-MAKE_PCI_OPS(iopci, read, &io_pci_swap, *)
-MAKE_PCI_OPS(iopci, write, &io_pci_swap,)
-
-struct pci_ops ddb5477_ext_pci_ops = {
- .read = extpci_read_config,
- .write = extpci_write_config
-};
-
-
-struct pci_ops ddb5477_io_pci_ops = {
- .read = iopci_read_config,
- .write = iopci_write_config
-};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 02:22:17 +0000