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Commit | Line | Data |
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d188b18f SG |
1 | /* |
2 | * Copyright (c) 2011 The Chromium OS Authors. | |
3 | * (C) Copyright 2008,2009 | |
4 | * Graeme Russ, <graeme.russ@gmail.com> | |
5 | * | |
6 | * (C) Copyright 2002 | |
7 | * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se> | |
8 | * | |
9 | * SPDX-License-Identifier: GPL-2.0+ | |
10 | */ | |
11 | ||
12 | #include <common.h> | |
7430f108 SG |
13 | #include <errno.h> |
14 | #include <malloc.h> | |
d188b18f SG |
15 | #include <pci.h> |
16 | #include <asm/pci.h> | |
17 | ||
4722c035 BM |
18 | DECLARE_GLOBAL_DATA_PTR; |
19 | ||
d188b18f SG |
20 | static struct pci_controller x86_hose; |
21 | ||
7430f108 SG |
22 | int pci_early_init_hose(struct pci_controller **hosep) |
23 | { | |
24 | struct pci_controller *hose; | |
25 | ||
26 | hose = calloc(1, sizeof(struct pci_controller)); | |
27 | if (!hose) | |
28 | return -ENOMEM; | |
29 | ||
30 | board_pci_setup_hose(hose); | |
31 | pci_setup_type1(hose); | |
fa5530b8 | 32 | hose->last_busno = pci_hose_scan(hose); |
8f9052fd | 33 | gd->hose = hose; |
7430f108 SG |
34 | *hosep = hose; |
35 | ||
36 | return 0; | |
37 | } | |
38 | ||
e94ea6f6 SG |
39 | __weak int board_pci_pre_scan(struct pci_controller *hose) |
40 | { | |
41 | return 0; | |
42 | } | |
43 | ||
44 | __weak int board_pci_post_scan(struct pci_controller *hose) | |
45 | { | |
46 | return 0; | |
47 | } | |
48 | ||
d188b18f SG |
49 | void pci_init_board(void) |
50 | { | |
51 | struct pci_controller *hose = &x86_hose; | |
52 | ||
7430f108 | 53 | /* Stop using the early hose */ |
8f9052fd | 54 | gd->hose = NULL; |
7430f108 | 55 | |
d188b18f SG |
56 | board_pci_setup_hose(hose); |
57 | pci_setup_type1(hose); | |
58 | pci_register_hose(hose); | |
59 | ||
e94ea6f6 | 60 | board_pci_pre_scan(hose); |
d188b18f | 61 | hose->last_busno = pci_hose_scan(hose); |
e94ea6f6 | 62 | board_pci_post_scan(hose); |
d188b18f | 63 | } |
6fb3b72e SG |
64 | |
65 | static struct pci_controller *get_hose(void) | |
66 | { | |
8f9052fd BM |
67 | if (gd->hose) |
68 | return gd->hose; | |
6fb3b72e SG |
69 | |
70 | return pci_bus_to_hose(0); | |
71 | } | |
72 | ||
31f57c28 | 73 | unsigned int x86_pci_read_config8(pci_dev_t dev, unsigned where) |
6fb3b72e SG |
74 | { |
75 | uint8_t value; | |
76 | ||
77 | pci_hose_read_config_byte(get_hose(), dev, where, &value); | |
78 | ||
79 | return value; | |
80 | } | |
81 | ||
31f57c28 | 82 | unsigned int x86_pci_read_config16(pci_dev_t dev, unsigned where) |
6fb3b72e SG |
83 | { |
84 | uint16_t value; | |
85 | ||
86 | pci_hose_read_config_word(get_hose(), dev, where, &value); | |
87 | ||
88 | return value; | |
89 | } | |
90 | ||
31f57c28 | 91 | unsigned int x86_pci_read_config32(pci_dev_t dev, unsigned where) |
6fb3b72e SG |
92 | { |
93 | uint32_t value; | |
94 | ||
95 | pci_hose_read_config_dword(get_hose(), dev, where, &value); | |
96 | ||
97 | return value; | |
98 | } | |
99 | ||
31f57c28 | 100 | void x86_pci_write_config8(pci_dev_t dev, unsigned where, unsigned value) |
6fb3b72e SG |
101 | { |
102 | pci_hose_write_config_byte(get_hose(), dev, where, value); | |
103 | } | |
104 | ||
31f57c28 | 105 | void x86_pci_write_config16(pci_dev_t dev, unsigned where, unsigned value) |
6fb3b72e SG |
106 | { |
107 | pci_hose_write_config_word(get_hose(), dev, where, value); | |
108 | } | |
109 | ||
31f57c28 | 110 | void x86_pci_write_config32(pci_dev_t dev, unsigned where, unsigned value) |
6fb3b72e SG |
111 | { |
112 | pci_hose_write_config_dword(get_hose(), dev, where, value); | |
113 | } |