projects / people / ms / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| affae2bf WD |
1 | /* |
| 2 | * Support for indirect PCI bridges. | |
| 3 | * | |
| 4 | * Copyright (C) 1998 Gabriel Paubert. | |
| 5 | * | |
| 1a459660 | 6 | * SPDX-License-Identifier: GPL-2.0+ |
| affae2bf WD |
7 | */ |
| 8 | ||
| 9 | #include <common.h> | |
| 10 | ||
| 29161f47 | 11 | #if !defined(__I386__) |
| affae2bf WD |
12 | |
| 13 | #include <asm/processor.h> | |
| 14 | #include <asm/io.h> | |
| 15 | #include <pci.h> | |
| 16 | ||
| 17 | #define cfg_read(val, addr, type, op) *val = op((type)(addr)) | |
| 18 | #define cfg_write(val, addr, type, op) op((type *)(addr), (val)) | |
| 19 | ||
| 2eb48ff7 | 20 | #if defined(CONFIG_E500) || defined(CONFIG_MPC86xx) |
| 42d1f039 WD |
21 | #define INDIRECT_PCI_OP(rw, size, type, op, mask) \ |
| 22 | static int \ | |
| 23 | indirect_##rw##_config_##size(struct pci_controller *hose, \ | |
| 24 | pci_dev_t dev, int offset, type val) \ | |
| 25 | { \ | |
| dffb70f3 KG |
26 | u32 b, d,f; \ |
| 27 | b = PCI_BUS(dev); d = PCI_DEV(dev); f = PCI_FUNC(dev); \ | |
| 28 | b = b - hose->first_busno; \ | |
| 29 | dev = PCI_BDF(b, d, f); \ | |
| 571f49fa | 30 | *(hose->cfg_addr) = dev | (offset & 0xfc) | ((offset & 0xf00) << 16) | 0x80000000; \ |
| 42d1f039 WD |
31 | sync(); \ |
| 32 | cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \ | |
| 33 | return 0; \ | |
| 34 | } | |
| 4d75a504 WD |
35 | #else |
| 36 | #define INDIRECT_PCI_OP(rw, size, type, op, mask) \ | |
| 37 | static int \ | |
| 53677ef1 | 38 | indirect_##rw##_config_##size(struct pci_controller *hose, \ |
| 4d75a504 WD |
39 | pci_dev_t dev, int offset, type val) \ |
| 40 | { \ | |
| dffb70f3 KG |
41 | u32 b, d,f; \ |
| 42 | b = PCI_BUS(dev); d = PCI_DEV(dev); f = PCI_FUNC(dev); \ | |
| 43 | b = b - hose->first_busno; \ | |
| 44 | dev = PCI_BDF(b, d, f); \ | |
| 53677ef1 | 45 | out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000000); \ |
| 4d75a504 | 46 | cfg_##rw(val, hose->cfg_data + (offset & mask), type, op); \ |
| 53677ef1 | 47 | return 0; \ |
| 4d75a504 WD |
48 | } |
| 49 | #endif | |
| affae2bf | 50 | |
| affae2bf WD |
51 | INDIRECT_PCI_OP(read, byte, u8 *, in_8, 3) |
| 52 | INDIRECT_PCI_OP(read, word, u16 *, in_le16, 2) | |
| 53 | INDIRECT_PCI_OP(read, dword, u32 *, in_le32, 0) | |
| affae2bf WD |
54 | INDIRECT_PCI_OP(write, byte, u8, out_8, 3) |
| 55 | INDIRECT_PCI_OP(write, word, u16, out_le16, 2) | |
| 56 | INDIRECT_PCI_OP(write, dword, u32, out_le32, 0) | |
| affae2bf WD |
57 | |
| 58 | void pci_setup_indirect(struct pci_controller* hose, u32 cfg_addr, u32 cfg_data) | |
| 59 | { | |
| 60 | pci_set_ops(hose, | |
| 61 | indirect_read_config_byte, | |
| 62 | indirect_read_config_word, | |
| 63 | indirect_read_config_dword, | |
| 64 | indirect_write_config_byte, | |
| 65 | indirect_write_config_word, | |
| 66 | indirect_write_config_dword); | |
| 67 | ||
| 68 | hose->cfg_addr = (unsigned int *) cfg_addr; | |
| 69 | hose->cfg_data = (unsigned char *) cfg_data; | |
| 70 | } | |
| 71 | ||
| 29161f47 | 72 | #endif /* !__I386__ */ |