- /* depending on kernel version, uio can be located in uio/uioX
- * or uio:uioX */
-
- rte_snprintf(dirname, sizeof(dirname),
- "/sys/bus/pci/devices/" PCI_PRI_FMT "/uio",
- loc->domain, loc->bus, loc->devid, loc->function);
-
- dir = opendir(dirname);
- if (dir == NULL) {
- /* retry with the parent directory */
- rte_snprintf(dirname, sizeof(dirname),
- "/sys/bus/pci/devices/" PCI_PRI_FMT,
- loc->domain, loc->bus, loc->devid, loc->function);
- dir = opendir(dirname);
-
- if (dir == NULL) {
- RTE_LOG(ERR, EAL, "Cannot opendir %s\n", dirname);
- return -1;
- }
- }
-
- /* take the first file starting with "uio" */
- while ((e = readdir(dir)) != NULL) {
- int shortprefix_len = sizeof("uio") - 1; /* format could be uio%d ...*/
- int longprefix_len = sizeof("uio:uio") - 1; /* ... or uio:uio%d */
- char *endptr;
-
- if (strncmp(e->d_name, "uio", 3) != 0)
- continue;
-
- /* first try uio%d */
- errno = 0;
- uio_num = strtoull(e->d_name + shortprefix_len, &endptr, 10);
- if (errno == 0 && endptr != e->d_name) {
- rte_snprintf(dirname2, sizeof(dirname2),
- "%s/uio%u", dirname, uio_num);
- break;
- }
-
- /* then try uio:uio%d */
- errno = 0;
- uio_num = strtoull(e->d_name + longprefix_len, &endptr, 10);
- if (errno == 0 && endptr != e->d_name) {
- rte_snprintf(dirname2, sizeof(dirname2),
- "%s/uio:uio%u", dirname, uio_num);
- break;
- }
- }
- closedir(dir);
-
- /* No uio resource found */
- if (e == NULL)
- return 0;
-
- /* get mapping offset */
- rte_snprintf(filename, sizeof(filename),
- "%s/maps/map0/offset", dirname2);
- if (pci_parse_sysfs_value(filename, &offset) < 0) {
- RTE_LOG(ERR, EAL, "%s(): cannot parse offset\n",
- __func__);
- return -1;
- }
-
- /* get mapping size */
- rte_snprintf(filename, sizeof(filename),
- "%s/maps/map0/size", dirname2);
- if (pci_parse_sysfs_value(filename, &size) < 0) {
- RTE_LOG(ERR, EAL, "%s(): cannot parse size\n",
- __func__);
- return -1;
- }
-
- /* open and mmap /dev/uioX */
- rte_snprintf(devname, sizeof(devname), "/dev/uio%u", uio_num);
- mapaddr = pci_map_resource(dev, NULL, devname, offset, size);
- if (mapaddr == NULL)
- return -1;
- dev->mem_resource.addr = mapaddr;
-
- /* save the mapping details for secondary processes*/
- uio_res = rte_malloc("UIO_RES", sizeof(*uio_res), 0);
- if (uio_res == NULL){
- RTE_LOG(ERR, EAL, "%s(): cannot store uio mmap details\n", __func__);
- return -1;
+ /* Map the PCI memory resource of device */
+ mapaddr = mmap(requested_addr, size, PROT_READ | PROT_WRITE,
+ MAP_SHARED | additional_flags, fd, offset);
+ if (mapaddr == MAP_FAILED) {
+ RTE_LOG(ERR, EAL, "%s(): cannot mmap(%d, %p, 0x%lx, 0x%lx): %s (%p)\n",
+ __func__, fd, requested_addr,
+ (unsigned long)size, (unsigned long)offset,
+ strerror(errno), mapaddr);
+ } else {
+ RTE_LOG(DEBUG, EAL, " PCI memory mapped at %p\n", mapaddr);