- /* get device id */
- snprintf(filename, sizeof(filename), "%s/device", dirname);
- if (ccp_pci_parse_sysfs_value(filename, &tmp) < 0)
- goto fail;
- pci->id.device_id = (uint16_t)tmp;
-
- /* get subsystem_vendor id */
- snprintf(filename, sizeof(filename), "%s/subsystem_vendor",
- dirname);
- if (ccp_pci_parse_sysfs_value(filename, &tmp) < 0)
- goto fail;
- pci->id.subsystem_vendor_id = (uint16_t)tmp;
-
- /* get subsystem_device id */
- snprintf(filename, sizeof(filename), "%s/subsystem_device",
- dirname);
- if (ccp_pci_parse_sysfs_value(filename, &tmp) < 0)
- goto fail;
- pci->id.subsystem_device_id = (uint16_t)tmp;
-
- /* get class_id */
- snprintf(filename, sizeof(filename), "%s/class",
- dirname);
- if (ccp_pci_parse_sysfs_value(filename, &tmp) < 0)
- goto fail;
- /* the least 24 bits are valid: class, subclass, program interface */
- pci->id.class_id = (uint32_t)tmp & RTE_CLASS_ANY_ID;
-
- /* parse resources */
- snprintf(filename, sizeof(filename), "%s/resource", dirname);
- if (ccp_pci_parse_sysfs_resource(filename, pci) < 0)
- goto fail;
-
- uio_num = ccp_find_uio_devname(dirname);
- if (uio_num < 0) {
- /*
- * It may take time for uio device to appear,
- * wait here and try again
- */
- usleep(100000);
- uio_num = ccp_find_uio_devname(dirname);
- if (uio_num < 0)
- goto fail;
- }
- snprintf(uio_devname, sizeof(uio_devname), "/dev/uio%u", uio_num);
-
- uio_fd = open(uio_devname, O_RDWR | O_NONBLOCK);
- if (uio_fd < 0)
- goto fail;
- if (flock(uio_fd, LOCK_EX | LOCK_NB))
- goto fail;
-
- /* Map the PCI memory resource of device */
- for (i = 0; i < PCI_MAX_RESOURCE; i++) {
-
- char devname[PATH_MAX];
- int res_fd;
-
- if (pci->mem_resource[i].phys_addr == 0)
- continue;
- snprintf(devname, sizeof(devname), "%s/resource%d", dirname, i);
- res_fd = open(devname, O_RDWR);
- if (res_fd < 0)
- goto fail;
- map_addr = mmap(NULL, pci->mem_resource[i].len,
- PROT_READ | PROT_WRITE,
- MAP_SHARED, res_fd, 0);
- if (map_addr == MAP_FAILED)
- goto fail;
-
- pci->mem_resource[i].addr = map_addr;
- }