pcidirect.c

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00001 /*
00002  * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
00003  *
00004  * This program is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU General Public License as
00006  * published by the Free Software Foundation; either version 2 of the
00007  * License, or any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012  * General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017  */
00018 
00019 FILE_LICENCE ( GPL2_OR_LATER );
00020 
00021 #include <gpxe/io.h>
00022 #include <gpxe/pci.h>
00023 
00024 /** @file
00025  *
00026  * PCI configuration space access via Type 1 accesses
00027  *
00028  */
00029 
00030 /**
00031  * Prepare for Type 1 PCI configuration space access
00032  *
00033  * @v pci               PCI device
00034  * @v where     Location within PCI configuration space
00035  */
00036 void pcidirect_prepare ( struct pci_device *pci, int where ) {
00037         outl ( ( 0x80000000 | ( pci->bus << 16 ) | ( pci->devfn << 8 ) |
00038                  ( where & ~3 ) ), PCIDIRECT_CONFIG_ADDRESS );
00039 }
00040 
00041 PROVIDE_PCIAPI_INLINE ( direct, pci_max_bus );
00042 PROVIDE_PCIAPI_INLINE ( direct, pci_read_config_byte );
00043 PROVIDE_PCIAPI_INLINE ( direct, pci_read_config_word );
00044 PROVIDE_PCIAPI_INLINE ( direct, pci_read_config_dword );
00045 PROVIDE_PCIAPI_INLINE ( direct, pci_write_config_byte );
00046 PROVIDE_PCIAPI_INLINE ( direct, pci_write_config_word );
00047 PROVIDE_PCIAPI_INLINE ( direct, pci_write_config_dword );