1 /*
2 * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
17 */
18
19 FILE_LICENCE ( GPL2_OR_LATER );
20
21 #include <gpxe/io.h>
22 #include <gpxe/pci.h>
23
24 /** @file
25 *
26 * PCI configuration space access via Type 1 accesses
27 *
28 */
29
30 /**
31 * Prepare for Type 1 PCI configuration space access
32 *
33 * @v pci PCI device
34 * @v where Location within PCI configuration space
35 */
pcidirect_prepare(struct pci_device * pci,int where)36 void pcidirect_prepare ( struct pci_device *pci, int where ) {
37 outl ( ( 0x80000000 | ( pci->bus << 16 ) | ( pci->devfn << 8 ) |
38 ( where & ~3 ) ), PCIDIRECT_CONFIG_ADDRESS );
39 }
40
41 PROVIDE_PCIAPI_INLINE ( direct, pci_max_bus );
42 PROVIDE_PCIAPI_INLINE ( direct, pci_read_config_byte );
43 PROVIDE_PCIAPI_INLINE ( direct, pci_read_config_word );
44 PROVIDE_PCIAPI_INLINE ( direct, pci_read_config_dword );
45 PROVIDE_PCIAPI_INLINE ( direct, pci_write_config_byte );
46 PROVIDE_PCIAPI_INLINE ( direct, pci_write_config_word );
47 PROVIDE_PCIAPI_INLINE ( direct, pci_write_config_dword );
48