114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
/*
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* (C) Copyright IBM Corporation 2006
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* on the rights to use, copy, modify, merge, publish, distribute, sub
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* license, and/or sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file common_init.c
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* Platform independent routines for initializing access to the PCI system.
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*
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* \author Ian Romanick <idr@us.ibm.com>
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*/
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#include <stdlib.h>
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#include <errno.h>
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#include "pciaccess.h"
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#include "pciaccess_private.h"
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struct pci_system * pci_sys;
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/**
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* Initialize the PCI subsystem for access.
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*
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* \return
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* Zero on success or an errno value on failure. In particular, if no
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* platform-specific initializers are available, \c ENOSYS will be returned.
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*
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* \sa pci_system_cleanup
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*/
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int
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pci_system_init( void )
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{
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int err = ENOSYS;
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#ifdef linux
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err = pci_system_linux_sysfs_create();
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#elif defined(__FreeBSD__)
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err = pci_system_freebsd_create();
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#elif defined(__OpenBSD__)
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err = pci_system_openbsd_create();
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#endif
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return err;
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}
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/**
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* Shutdown all access to the PCI subsystem.
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*
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* \sa pci_system_init
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*/
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void
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pci_system_cleanup( void )
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{
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unsigned i;
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unsigned j;
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if ( pci_sys == NULL ) {
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return;
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}
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if ( pci_sys->devices ) {
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for ( i = 0 ; i < pci_sys->num_devices ; i++ ) {
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for ( j = 0 ; j < 6 ; j++ ) {
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(void) pci_device_unmap_region( & pci_sys->devices[i].base, j );
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}
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free( (char *) pci_sys->devices[i].device_string );
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free( (char *) pci_sys->devices[i].agp );
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pci_sys->devices[i].device_string = NULL;
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pci_sys->devices[i].agp = NULL;
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if ( pci_sys->methods->destroy_device != NULL ) {
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(*pci_sys->methods->destroy_device)( & pci_sys->devices[i].base );
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}
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}
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free( pci_sys->devices );
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pci_sys->devices = NULL;
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pci_sys->num_devices = 0;
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}
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if ( pci_sys->methods->destroy != NULL ) {
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(*pci_sys->methods->destroy)();
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}
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free( pci_sys );
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pci_sys = NULL;
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}
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