blob: 5e91c2765e32e857bd3e6533e7c44d1b9f0bd4fc [file] [log] [blame]
/*
* (C) Copyright IBM Corporation 2006
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/**
* \file common_init.c
* Platform independent routines for initializing access to the PCI system.
*
* \author Ian Romanick <idr@us.ibm.com>
*/
#include <stdlib.h>
#include <errno.h>
#include "pciaccess.h"
#include "pciaccess_private.h"
_pci_hidden struct pci_system * pci_sys;
/**
* Initialize the PCI subsystem for access.
*
* \return
* Zero on success or an errno value on failure. In particular, if no
* platform-specific initializers are available, \c ENOSYS will be returned.
*
* \sa pci_system_cleanup
*/
int
pci_system_init( void )
{
int err = ENOSYS;
#ifdef linux
err = pci_system_linux_sysfs_create();
#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
err = pci_system_freebsd_create();
#elif defined(__NetBSD__)
err = pci_system_netbsd_create();
#elif defined(__OpenBSD__)
err = pci_system_openbsd_create();
#elif defined(__sun)
err = pci_system_solx_devfs_create();
#elif defined(__GNU__)
err = pci_system_x86_create();
#endif
return err;
}
void
pci_system_init_dev_mem(int fd)
{
#ifdef __OpenBSD__
pci_system_openbsd_init_dev_mem(fd);
#endif
}
/**
* Shutdown all access to the PCI subsystem.
*
* \sa pci_system_init
*/
void
pci_system_cleanup( void )
{
unsigned i;
unsigned j;
if ( pci_sys == NULL ) {
return;
}
pci_io_cleanup();
if ( pci_sys->devices ) {
for ( i = 0 ; i < pci_sys->num_devices ; i++ ) {
for ( j = 0 ; j < 6 ; j++ ) {
(void) pci_device_unmap_region( & pci_sys->devices[i].base, j );
}
free( (char *) pci_sys->devices[i].device_string );
free( (char *) pci_sys->devices[i].agp );
pci_sys->devices[i].device_string = NULL;
pci_sys->devices[i].agp = NULL;
if ( pci_sys->methods->destroy_device != NULL ) {
(*pci_sys->methods->destroy_device)( & pci_sys->devices[i].base );
}
}
free( pci_sys->devices );
pci_sys->devices = NULL;
pci_sys->num_devices = 0;
}
if ( pci_sys->methods->destroy != NULL ) {
(*pci_sys->methods->destroy)();
}
free( pci_sys );
pci_sys = NULL;
}