pci: unmap igb_uio resources

[dpdk.git] / lib / librte_eal / linuxapp / eal / eal_pci.c

diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c
index 06bfc1a6f633b248de998622d24cb2f394c98a34..d03429cb24aa15ea1f37aa7f0b62227bfcaffb7f 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal_pci.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci.c
@@ -168,6 +168,23 @@ pci_map_resource(void *requested_addr, int fd, off_t offset, size_t size,
        return mapaddr;
 }
 
+/* unmap a particular resource */
+void
+pci_unmap_resource(void *requested_addr, size_t size)
+{
+       if (requested_addr == NULL)
+               return;
+
+       /* Unmap the PCI memory resource of device */
+       if (munmap(requested_addr, size)) {
+               RTE_LOG(ERR, EAL, "%s(): cannot munmap(%p, 0x%lx): %s\n",
+                       __func__, requested_addr, (unsigned long)size,
+                       strerror(errno));
+       } else
+               RTE_LOG(DEBUG, EAL, "  PCI memory unmapped at %p\n",
+                               requested_addr);
+}
+
 /* parse the "resource" sysfs file */
 static int
 pci_parse_sysfs_resource(const char *filename, struct rte_pci_device *dev)