tailq: remove unneeded inclusions

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

diff --git a/lib/librte_eal/linuxapp/eal/eal_pci_uio.c b/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
index c5e0cf3..ebbc2d3 100644 (file)
--- a/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci_uio.c
@@ -32,6 +32,7 @@
  */
 
 #include <string.h>
+#include <unistd.h>
 #include <fcntl.h>
 #include <dirent.h>
 #include <sys/stat.h>
@@ -42,7 +43,6 @@
 #include <rte_pci.h>
 #include <rte_common.h>
 #include <rte_malloc.h>
-#include <rte_tailq.h>
 
 #include "rte_pci_dev_ids.h"
 #include "eal_filesystem.h"
@@ -386,3 +386,68 @@ pci_uio_map_resource(struct rte_pci_device *dev)
 
        return 0;
 }
+
+#ifdef RTE_LIBRTE_EAL_HOTPLUG
+static void
+pci_uio_unmap(struct mapped_pci_resource *uio_res)
+{
+       int i;
+
+       if (uio_res == NULL)
+               return;
+
+       for (i = 0; i != uio_res->nb_maps; i++)
+               pci_unmap_resource(uio_res->maps[i].addr,
+                               (size_t)uio_res->maps[i].size);
+}
+
+static struct mapped_pci_resource *
+pci_uio_find_resource(struct rte_pci_device *dev)
+{
+       struct mapped_pci_resource *uio_res;
+
+       if (dev == NULL)
+               return NULL;
+
+       TAILQ_FOREACH(uio_res, pci_res_list, next) {
+
+               /* skip this element if it doesn't match our PCI address */
+               if (!rte_eal_compare_pci_addr(&uio_res->pci_addr, &dev->addr))
+                       return uio_res;
+       }
+       return NULL;
+}
+
+/* unmap the PCI resource of a PCI device in virtual memory */
+void
+pci_uio_unmap_resource(struct rte_pci_device *dev)
+{
+       struct mapped_pci_resource *uio_res;
+
+       if (dev == NULL)
+               return;
+
+       /* find an entry for the device */
+       uio_res = pci_uio_find_resource(dev);
+       if (uio_res == NULL)
+               return;
+
+       /* secondary processes - just free maps */
+       if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+               return pci_uio_unmap(uio_res);
+
+       TAILQ_REMOVE(pci_res_list, uio_res, next);
+
+       /* unmap all resources */
+       pci_uio_unmap(uio_res);
+
+       /* free uio resource */
+       rte_free(uio_res);
+
+       /* close fd if in primary process */
+       close(dev->intr_handle.fd);
+
+       dev->intr_handle.fd = -1;
+       dev->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
+}
+#endif /* RTE_LIBRTE_EAL_HOTPLUG */