| #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__) */ |
