projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| affae2bf WD |
1 | /* |
| 2 | * Support for indirect PCI bridges. | |
| 3 | * | |
| 4 | * Copyright (C) 1998 Gabriel Paubert. | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public License | |
| 8 | * as published by the Free Software Foundation; either version | |
| 9 | * 2 of the License, or (at your option) any later version. | |
| 10 | */ | |
| 11 | ||
| 12 | #include <common.h> | |
| 13 | ||
| 14 | #ifdef CONFIG_PCI | |
| ea909b76 | 15 | #ifndef __I386__ |
| affae2bf WD |
16 | |
| 17 | #include <asm/processor.h> | |
| 18 | #include <asm/io.h> | |
| 19 | #include <pci.h> | |
| 20 | ||
| 21 | #define cfg_read(val, addr, type, op) *val = op((type)(addr)) | |
| 22 | #define cfg_write(val, addr, type, op) op((type *)(addr), (val)) | |
| 23 | ||
| 5d232d0e | 24 | #if defined(CONFIG_MPC8260) |
| affae2bf WD |
25 | #define INDIRECT_PCI_OP(rw, size, type, op, mask) \ |
| 26 | static int \ | |
| 27 | indirect_##rw##_config_##size(struct pci_controller *hose, \ | |
| 28 | pci_dev_t dev, int offset, type val) \ | |
| 29 | { \ | |
| 30 | out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000000); \ | |
| 4d75a504 | 31 | sync(); \ |
| affae2bf WD |
32 | cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \ |
| 33 | return 0; \ | |
| 34 | } | |
| 42d1f039 WD |
35 | #elif defined(CONFIG_E500) |
| 36 | #define INDIRECT_PCI_OP(rw, size, type, op, mask) \ | |
| 37 | static int \ | |
| 38 | indirect_##rw##_config_##size(struct pci_controller *hose, \ | |
| 39 | pci_dev_t dev, int offset, type val) \ | |
| 40 | { \ | |
| 41 | *(hose->cfg_addr) = dev | (offset & 0xfc) | 0x80000000; \ | |
| 42 | sync(); \ | |
| 43 | cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \ | |
| 44 | return 0; \ | |
| 45 | } | |
| 4d75a504 WD |
46 | #else |
| 47 | #define INDIRECT_PCI_OP(rw, size, type, op, mask) \ | |
| 48 | static int \ | |
| 49 | indirect_##rw##_config_##size(struct pci_controller *hose, \ | |
| 50 | pci_dev_t dev, int offset, type val) \ | |
| 51 | { \ | |
| 52 | out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000000); \ | |
| 53 | cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \ | |
| 54 | return 0; \ | |
| 55 | } | |
| 56 | #endif | |
| affae2bf WD |
57 | |
| 58 | #define INDIRECT_PCI_OP_ERRATA6(rw, size, type, op, mask) \ | |
| 59 | static int \ | |
| 60 | indirect_##rw##_config_##size(struct pci_controller *hose, \ | |
| 61 | pci_dev_t dev, int offset, type val) \ | |
| 62 | { \ | |
| 63 | unsigned int msr = mfmsr(); \ | |
| 64 | mtmsr(msr & ~(MSR_EE | MSR_CE)); \ | |
| 65 | out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000000); \ | |
| 66 | cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \ | |
| 67 | out_le32(hose->cfg_addr, 0x00000000); \ | |
| 68 | mtmsr(msr); \ | |
| 69 | return 0; \ | |
| 70 | } | |
| 71 | ||
| 72 | INDIRECT_PCI_OP(read, byte, u8 *, in_8, 3) | |
| 73 | INDIRECT_PCI_OP(read, word, u16 *, in_le16, 2) | |
| 74 | INDIRECT_PCI_OP(read, dword, u32 *, in_le32, 0) | |
| 75 | #ifdef CONFIG_405GP | |
| 76 | INDIRECT_PCI_OP_ERRATA6(write, byte, u8, out_8, 3) | |
| 77 | INDIRECT_PCI_OP_ERRATA6(write, word, u16, out_le16, 2) | |
| 78 | INDIRECT_PCI_OP_ERRATA6(write, dword, u32, out_le32, 0) | |
| 79 | #else | |
| 80 | INDIRECT_PCI_OP(write, byte, u8, out_8, 3) | |
| 81 | INDIRECT_PCI_OP(write, word, u16, out_le16, 2) | |
| 82 | INDIRECT_PCI_OP(write, dword, u32, out_le32, 0) | |
| 83 | #endif | |
| 84 | ||
| 85 | void pci_setup_indirect(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data) | |
| 86 | { | |
| 87 | pci_set_ops(hose, | |
| 88 | indirect_read_config_byte, | |
| 89 | indirect_read_config_word, | |
| 90 | indirect_read_config_dword, | |
| 91 | indirect_write_config_byte, | |
| 92 | indirect_write_config_word, | |
| 93 | indirect_write_config_dword); | |
| 94 | ||
| 95 | hose->cfg_addr = (unsigned int *) cfg_addr; | |
| 96 | hose->cfg_data = (unsigned char *) cfg_data; | |
| 97 | } | |
| 98 | ||
| 99 | #endif | |
| ea909b76 | 100 | #endif |