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Diffstat (limited to 'arch/mips/pci/ops-emma2rh.c')
-rw-r--r--arch/mips/pci/ops-emma2rh.c167
1 files changed, 0 insertions, 167 deletions
diff --git a/arch/mips/pci/ops-emma2rh.c b/arch/mips/pci/ops-emma2rh.c
deleted file mode 100644
index 65f47344536c..000000000000
--- a/arch/mips/pci/ops-emma2rh.c
+++ /dev/null
@@ -1,167 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Copyright (C) NEC Electronics Corporation 2004-2006
- *
- * This file is based on the arch/mips/pci/ops-vr41xx.c
- *
- * Copyright 2001 MontaVista Software Inc.
- */
-
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-
-#include <asm/addrspace.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;
- 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,
-};