blob: cd2eb6fe41c457cd9089414943f71c20e0806fd4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
#if defined(__i386__) || defined(__x86_64__)
#include <helpers/helpers.h>
/*
* pci_acc_init
*
* PCI access helper function depending on libpci
*
* **pacc : if a valid pci_dev is returned
* *pacc must be passed to pci_acc_cleanup to free it
*
* vendor_id : the pci vendor id matching the pci device to access
* dev_ids : device ids matching the pci device to access
*
* Returns :
* struct pci_dev which can be used with pci_{read,write}_* functions
* to access the PCI config space of matching pci devices
*/
struct pci_dev *pci_acc_init(struct pci_access **pacc, int vendor_id,
int *dev_ids)
{
struct pci_filter filter_nb_link = { -1, -1, -1, -1, vendor_id, 0};
struct pci_dev *device;
unsigned int i;
*pacc = pci_alloc();
if (*pacc == NULL)
return NULL;
pci_init(*pacc);
pci_scan_bus(*pacc);
for (i = 0; dev_ids[i] != 0; i++) {
filter_nb_link.device = dev_ids[i];
for (device = (*pacc)->devices; device; device = device->next) {
if (pci_filter_match(&filter_nb_link, device))
return device;
}
}
pci_cleanup(*pacc);
return NULL;
}
#endif /* defined(__i386__) || defined(__x86_64__) */
|
