New upstream version 18.11-rc1

[deb_dpdk.git] / drivers / bus / pci / pci_common_uio.c

diff --git a/drivers/bus/pci/pci_common_uio.c b/drivers/bus/pci/pci_common_uio.c
index 54bc20b..7ea73db 100644 (file)
--- a/drivers/bus/pci/pci_common_uio.c
+++ b/drivers/bus/pci/pci_common_uio.c
@@ -146,6 +146,39 @@ pci_uio_unmap(struct mapped_pci_resource *uio_res)
        }
 }
 
+/* remap the PCI resource of a PCI device in anonymous virtual memory */
+int
+pci_uio_remap_resource(struct rte_pci_device *dev)
+{
+       int i;
+       void *map_address;
+
+       if (dev == NULL)
+               return -1;
+
+       /* Remap all BARs */
+       for (i = 0; i != PCI_MAX_RESOURCE; i++) {
+               /* skip empty BAR */
+               if (dev->mem_resource[i].phys_addr == 0)
+                       continue;
+               map_address = mmap(dev->mem_resource[i].addr,
+                               (size_t)dev->mem_resource[i].len,
+                               PROT_READ | PROT_WRITE,
+                               MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
+               if (map_address == MAP_FAILED) {
+                       RTE_LOG(ERR, EAL,
+                               "Cannot remap resource for device %s\n",
+                               dev->name);
+                       return -1;
+               }
+               RTE_LOG(INFO, EAL,
+                       "Successful remap resource for device %s\n",
+                       dev->name);
+       }
+
+       return 0;
+}
+
 static struct mapped_pci_resource *
 pci_uio_find_resource(struct rte_pci_device *dev)
 {