1 /*
2 *
3 * Copyright (C) 2008 Advanced Micro Devices, Inc.
4 * Copyright (C) 2008 coresystems GmbH
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <libpayload.h>
31 #include <pci.h>
32
pci_read_config8(pcidev_t dev,u16 reg)33 u8 pci_read_config8(pcidev_t dev, u16 reg)
34 {
35 outl(dev | (reg & ~3), 0xCF8);
36 return inb(0xCFC + (reg & 3));
37 }
38
pci_read_config16(pcidev_t dev,u16 reg)39 u16 pci_read_config16(pcidev_t dev, u16 reg)
40 {
41 outl(dev | (reg & ~3), 0xCF8);
42 return inw(0xCFC + (reg & 3));
43 }
44
pci_read_config32(pcidev_t dev,u16 reg)45 u32 pci_read_config32(pcidev_t dev, u16 reg)
46 {
47 outl(dev | (reg & ~3), 0xCF8);
48 return inl(0xCFC + (reg & 3));
49 }
50
pci_write_config8(pcidev_t dev,u16 reg,u8 val)51 void pci_write_config8(pcidev_t dev, u16 reg, u8 val)
52 {
53 outl(dev | (reg & ~3), 0xCF8);
54 outb(val, 0xCFC + (reg & 3));
55 }
56
pci_write_config16(pcidev_t dev,u16 reg,u16 val)57 void pci_write_config16(pcidev_t dev, u16 reg, u16 val)
58 {
59 outl(dev | (reg & ~3), 0xCF8);
60 outw(val, 0xCFC + (reg & 3));
61 }
62
pci_write_config32(pcidev_t dev,u16 reg,u32 val)63 void pci_write_config32(pcidev_t dev, u16 reg, u32 val)
64 {
65 outl(dev | (reg & ~3), 0xCF8);
66 outl(val, 0xCFC + (reg & 3));
67 }
68