2 * (C) Copyright IBM Corporation 2006
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
27 * Platform independent routines for initializing access to the PCI system.
29 * \author Ian Romanick <idr@us.ibm.com>
38 #include "pciaccess.h"
39 #include "pciaccess_private.h"
41 _pci_hidden struct pci_system * pci_sys;
44 * Initialize the PCI subsystem for access.
47 * Zero on success or an errno value on failure. In particular, if no
48 * platform-specific initializers are available, \c ENOSYS will be returned.
50 * \sa pci_system_cleanup
54 pci_system_init( void )
59 err = pci_system_linux_sysfs_create();
60 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
61 err = pci_system_freebsd_create();
62 #elif defined(__NetBSD__)
63 err = pci_system_netbsd_create();
64 #elif defined(__OpenBSD__)
65 err = pci_system_openbsd_create();
67 err = pci_system_solx_devfs_create();
68 #elif defined(__GNU__) || defined(__CYGWIN__)
69 err = pci_system_x86_create();
71 # error "Unsupported OS"
78 pci_system_init_dev_mem(int fd)
81 pci_system_openbsd_init_dev_mem(fd);
86 * Shutdown all access to the PCI subsystem.
91 pci_system_cleanup( void )
97 if ( pci_sys == NULL ) {
103 if ( pci_sys->devices ) {
104 for ( i = 0 ; i < pci_sys->num_devices ; i++ ) {
105 for ( j = 0 ; j < 6 ; j++ ) {
106 (void) pci_device_unmap_region( & pci_sys->devices[i].base, j );
109 free( (char *) pci_sys->devices[i].device_string );
110 free( (char *) pci_sys->devices[i].agp );
112 pci_sys->devices[i].device_string = NULL;
113 pci_sys->devices[i].agp = NULL;
115 if ( pci_sys->methods->destroy_device != NULL ) {
116 (*pci_sys->methods->destroy_device)( & pci_sys->devices[i].base );
120 free( pci_sys->devices );
121 pci_sys->devices = NULL;
122 pci_sys->num_devices = 0;
125 if ( pci_sys->methods->destroy != NULL ) {
126 (*pci_sys->methods->destroy)();