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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>
13 #include <errno.h>
14 #include <malloc.h>
15 #include <pci.h>
16 #include <asm/pci.h>
17
18 static struct pci_controller x86_hose;
19
20 int pci_early_init_hose(struct pci_controller **hosep)
21 {
22         struct pci_controller *hose;
23
24         hose = calloc(1, sizeof(struct pci_controller));
25         if (!hose)
26                 return -ENOMEM;
27
28         board_pci_setup_hose(hose);
29         pci_setup_type1(hose);
30         gd->arch.hose = hose;
31         *hosep = hose;
32
33         return 0;
34 }
35
36 void pci_init_board(void)
37 {
38         struct pci_controller *hose = &x86_hose;
39
40         /* Stop using the early hose */
41         gd->arch.hose = NULL;
42
43         board_pci_setup_hose(hose);
44         pci_setup_type1(hose);
45         pci_register_hose(hose);
46
47         hose->last_busno = pci_hose_scan(hose);
48 }
49
50 static struct pci_controller *get_hose(void)
51 {
52         if (gd->arch.hose)
53                 return gd->arch.hose;
54
55         return pci_bus_to_hose(0);
56 }
57
58 unsigned int pci_read_config8(pci_dev_t dev, unsigned where)
59 {
60         uint8_t value;
61
62         pci_hose_read_config_byte(get_hose(), dev, where, &value);
63
64         return value;
65 }
66
67 unsigned int pci_read_config16(pci_dev_t dev, unsigned where)
68 {
69         uint16_t value;
70
71         pci_hose_read_config_word(get_hose(), dev, where, &value);
72
73         return value;
74 }
75
76 unsigned int pci_read_config32(pci_dev_t dev, unsigned where)
77 {
78         uint32_t value;
79
80         pci_hose_read_config_dword(get_hose(), dev, where, &value);
81
82         return value;
83 }
84
85 void pci_write_config8(pci_dev_t dev, unsigned where, unsigned value)
86 {
87         pci_hose_write_config_byte(get_hose(), dev, where, value);
88 }
89
90 void pci_write_config16(pci_dev_t dev, unsigned where, unsigned value)
91 {
92         pci_hose_write_config_word(get_hose(), dev, where, value);
93 }
94
95 void pci_write_config32(pci_dev_t dev, unsigned where, unsigned value)
96 {
97         pci_hose_write_config_dword(get_hose(), dev, where, value);
98 }