X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Flinuxapp%2Feal%2Feal_pci.c;h=63bcbceb1d916a000611d81376616d35aaf58708;hb=8bae1da2afe0;hp=ddb05352ec0e775541bb3c04944a3f9f9b6ab309;hpb=a4ff75496a18f78bed3a678131bfdd11f1e8d3f7;p=dpdk.git

diff --git a/lib/librte_eal/linuxapp/eal/eal_pci.c b/lib/librte_eal/linuxapp/eal/eal_pci.c
index ddb05352ec..63bcbceb1d 100644
--- a/lib/librte_eal/linuxapp/eal/eal_pci.c
+++ b/lib/librte_eal/linuxapp/eal/eal_pci.c
@@ -97,6 +97,25 @@ error:
 	return -1;
 }
 
+void *
+pci_find_max_end_va(void)
+{
+	const struct rte_memseg *seg = rte_eal_get_physmem_layout();
+	const struct rte_memseg *last = seg;
+	unsigned i = 0;
+
+	for (i = 0; i < RTE_MAX_MEMSEG; i++, seg++) {
+		if (seg->addr == NULL)
+			break;
+
+		if (seg->addr > last->addr)
+			last = seg;
+
+	}
+	return RTE_PTR_ADD(last->addr, last->len);
+}
+
+
 /* map a particular resource from a file */
 void *
 pci_map_resource(void *requested_addr, int fd, off_t offset, size_t size)
@@ -106,26 +125,19 @@ pci_map_resource(void *requested_addr, int fd, off_t offset, size_t size)
 	/* Map the PCI memory resource of device */
 	mapaddr = mmap(requested_addr, size, PROT_READ | PROT_WRITE,
 			MAP_SHARED, fd, offset);
-	if (mapaddr == MAP_FAILED ||
-			(requested_addr != NULL && mapaddr != requested_addr)) {
+	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);
-		goto fail;
+	} else {
+		RTE_LOG(DEBUG, EAL, "  PCI memory mapped at %p\n", mapaddr);
 	}
 
-	RTE_LOG(DEBUG, EAL, "  PCI memory mapped at %p\n", mapaddr);
-
 	return mapaddr;
-
-fail:
-	return NULL;
 }
 
 /* parse the "resource" sysfs file */
-#define IORESOURCE_MEM  0x00000200
-
 static int
 pci_parse_sysfs_resource(const char *filename, struct rte_pci_device *dev)
 {
@@ -258,8 +270,15 @@ pci_scan_one(const char *dirname, uint16_t domain, uint8_t bus,
 	dev->max_vfs = 0;
 	snprintf(filename, sizeof(filename), "%s/max_vfs", dirname);
 	if (!access(filename, F_OK) &&
-	    eal_parse_sysfs_value(filename, &tmp) == 0) {
+	    eal_parse_sysfs_value(filename, &tmp) == 0)
 		dev->max_vfs = (uint16_t)tmp;
+	else {
+		/* for non igb_uio driver, need kernel version >= 3.8 */
+		snprintf(filename, sizeof(filename),
+			 "%s/sriov_numvfs", dirname);
+		if (!access(filename, F_OK) &&
+		    eal_parse_sysfs_value(filename, &tmp) == 0)
+			dev->max_vfs = (uint16_t)tmp;
 	}
 
 	/* get numa node */
@@ -498,7 +517,7 @@ pci_map_device(struct rte_pci_device *dev)
 			return ret;
 	}
 #endif
-	/* map resources for devices that use igb_uio */
+	/* map resources for devices that use uio_pci_generic or igb_uio */
 	if (!mapped) {
 		ret = pci_uio_map_resource(dev);
 		if (ret != 0)