55 lines
1.8 KiB
C
55 lines
1.8 KiB
C
/*
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* Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <ipxe/io.h>
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#include <ipxe/pci.h>
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/** @file
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*
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* PCI configuration space access via Type 1 accesses
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*
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*/
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/**
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* Prepare for Type 1 PCI configuration space access
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*
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* @v pci PCI device
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* @v where Location within PCI configuration space
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*/
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void pcidirect_prepare ( struct pci_device *pci, int where ) {
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uint16_t busdevfn = ( pci->busdevfn & 0xffff );
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outl ( ( 0x80000000 | ( busdevfn << 8 ) | ( where & ~3 ) ),
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PCIDIRECT_CONFIG_ADDRESS );
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}
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PROVIDE_PCIAPI_INLINE ( direct, pci_num_bus );
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PROVIDE_PCIAPI_INLINE ( direct, pci_read_config_byte );
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PROVIDE_PCIAPI_INLINE ( direct, pci_read_config_word );
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PROVIDE_PCIAPI_INLINE ( direct, pci_read_config_dword );
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PROVIDE_PCIAPI_INLINE ( direct, pci_write_config_byte );
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PROVIDE_PCIAPI_INLINE ( direct, pci_write_config_word );
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PROVIDE_PCIAPI_INLINE ( direct, pci_write_config_dword );
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