| Dominik Brodowski | 7fe2f63 | 2011-03-30 16:30:11 +0200 | [diff] [blame^] | 1 | #if defined(__i386__) || defined(__x86_64__) |
| 2 | |
| 3 | #include <helpers/helpers.h> |
| 4 | |
| 5 | /* |
| 6 | * pci_acc_init |
| 7 | * |
| 8 | * PCI access helper function depending on libpci |
| 9 | * |
| 10 | * **pacc : if a valid pci_dev is returned |
| 11 | * *pacc must be passed to pci_acc_cleanup to free it |
| 12 | * |
| 13 | * vendor_id : the pci vendor id matching the pci device to access |
| 14 | * dev_ids : device ids matching the pci device to access |
| 15 | * |
| 16 | * Returns : |
| 17 | * struct pci_dev which can be used with pci_{read,write}_* functions |
| 18 | * to access the PCI config space of matching pci devices |
| 19 | */ |
| 20 | struct pci_dev *pci_acc_init(struct pci_access **pacc, int vendor_id, |
| 21 | int *dev_ids) |
| 22 | { |
| 23 | struct pci_filter filter_nb_link = { -1, -1, -1, -1, vendor_id, 0}; |
| 24 | struct pci_dev *device; |
| 25 | unsigned int i; |
| 26 | |
| 27 | *pacc = pci_alloc(); |
| 28 | if (*pacc == NULL) |
| 29 | return NULL; |
| 30 | |
| 31 | pci_init(*pacc); |
| 32 | pci_scan_bus(*pacc); |
| 33 | |
| 34 | for (i = 0; dev_ids[i] != 0; i++) { |
| 35 | filter_nb_link.device = dev_ids[i]; |
| 36 | for (device=(*pacc)->devices; device; device = device->next) { |
| 37 | if (pci_filter_match(&filter_nb_link, device)) |
| 38 | return device; |
| 39 | } |
| 40 | } |
| 41 | pci_cleanup(*pacc); |
| 42 | return NULL; |
| 43 | } |
| 44 | #endif /* defined(__i386__) || defined(__x86_64__) */ |