- int fd;
- void *mapaddr;
-
-#ifdef RTE_EAL_UNBIND_PORTS
- /*
- * open devname, and mmap it: it can take some time to
- * appear, so we wait some time before returning an error
- */
- unsigned n;
- for (n = 0; n < UIO_DEV_WAIT_TIMEOUT*10; n++) {
- errno = 0;
- if ((fd = open(devname, O_RDWR)) < 0 && errno != ENOENT)
- break;
- usleep(100000);
- }
-#else
- /*
- * open devname, to mmap it
- */
- fd = open(devname, O_RDWR);
-#endif
- if (fd < 0) {
- RTE_LOG(ERR, EAL, "Cannot open %s: %s\n",
- devname, strerror(errno));
- goto fail;
- }
-
- /* Map the PCI memory resource of device */
- mapaddr = mmap(requested_addr, size, PROT_READ | PROT_WRITE,
- MAP_SHARED, fd, offset);
- close(fd);
- if (mapaddr == MAP_FAILED ||
- (requested_addr != NULL && mapaddr != requested_addr)) {
- RTE_LOG(ERR, EAL, "%s(): cannot mmap(%s(%d), %p, 0x%lx, 0x%lx):"
- " %s (%p)\n", __func__, devname, fd, requested_addr,
- (unsigned long)size, (unsigned long)offset,
- strerror(errno), mapaddr);
- goto fail;
- }
-
- RTE_LOG(DEBUG, EAL, " PCI memory mapped at %p\n", mapaddr);
-
- return mapaddr;
-
-fail:
- return NULL;
-}
-
-#define OFF_MAX ((uint64_t)(off_t)-1)
-static ssize_t
-pci_uio_get_mappings(const char *devname, struct uio_map maps[], size_t nb_maps)
-{
- size_t i;
- char dirname[PATH_MAX];
- char filename[PATH_MAX];
- uint64_t offset, size;
-
- for (i = 0; i != nb_maps; i++) {
-
- /* check if map directory exists */
- rte_snprintf(dirname, sizeof(dirname),
- "%s/maps/map%u", devname, i);
-
- if (access(dirname, F_OK) != 0)
- break;
-
- /* get mapping offset */
- rte_snprintf(filename, sizeof(filename),
- "%s/offset", dirname);
- if (pci_parse_sysfs_value(filename, &offset) < 0) {
- RTE_LOG(ERR, EAL,
- "%s(): cannot parse offset of %s\n",
- __func__, dirname);
- return (-1);
- }
-
- /* get mapping size */
- rte_snprintf(filename, sizeof(filename),
- "%s/size", dirname);
- if (pci_parse_sysfs_value(filename, &size) < 0) {
- RTE_LOG(ERR, EAL,
- "%s(): cannot parse size of %s\n",
- __func__, dirname);
- return (-1);
- }
-
- /* get mapping physical address */
- rte_snprintf(filename, sizeof(filename),
- "%s/addr", dirname);
- if (pci_parse_sysfs_value(filename, &maps[i].phaddr) < 0) {
- RTE_LOG(ERR, EAL,
- "%s(): cannot parse addr of %s\n",
- __func__, dirname);
- return (-1);
- }
-
- if ((offset > OFF_MAX) || (size > SIZE_MAX)) {
- RTE_LOG(ERR, EAL,
- "%s(): offset/size exceed system max value\n",
- __func__);
- return (-1);
- }