X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fbus%2Fifpga%2Fifpga_bus.c;h=dfd6b1fba9ce00cb8af25125bd335066f22e3dbc;hb=c66049221e2289e465d7be29d7d983d414d9a81f;hp=80663328aacca48d41e8494af0f825ec5aea61ed;hpb=6844d146ff397d82526a8a39b550443937f7ac12;p=dpdk.git

diff --git a/drivers/bus/ifpga/ifpga_bus.c b/drivers/bus/ifpga/ifpga_bus.c
index 80663328aa..dfd6b1fba9 100644
--- a/drivers/bus/ifpga/ifpga_bus.c
+++ b/drivers/bus/ifpga/ifpga_bus.c
@@ -73,6 +73,19 @@ ifpga_find_afu_dev(const struct rte_rawdev *rdev,
 	return NULL;
 }
 
+struct rte_afu_device *
+rte_ifpga_find_afu_by_name(const char *name)
+{
+	struct rte_afu_device *afu_dev = NULL;
+
+	TAILQ_FOREACH(afu_dev, &ifpga_afu_dev_list, next) {
+		if (afu_dev &&
+			!strcmp(afu_dev->device.name, name))
+			return afu_dev;
+	}
+	return NULL;
+}
+
 static const char * const valid_args[] = {
 #define IFPGA_ARG_NAME         "ifpga"
 	IFPGA_ARG_NAME,
@@ -125,15 +138,13 @@ ifpga_scan_one(struct rte_rawdev *rawdev,
 				     IFPGA_AFU_BTS);
 			goto end;
 		}
+		afu_pr_conf.pr_enable = 1;
 	} else {
-		IFPGA_BUS_ERR("arg %s is mandatory for ifpga bus",
-			  IFPGA_AFU_BTS);
-		goto end;
+		afu_pr_conf.pr_enable = 0;
 	}
 
 	afu_pr_conf.afu_id.uuid.uuid_low = 0;
 	afu_pr_conf.afu_id.uuid.uuid_high = 0;
-	afu_pr_conf.pr_enable = path?1:0;
 
 	if (ifpga_find_afu_dev(rawdev, &afu_pr_conf.afu_id))
 		goto end;
@@ -280,14 +291,13 @@ ifpga_probe_one_driver(struct rte_afu_driver *drv,
 
 	/* reference driver structure */
 	afu_dev->driver = drv;
-	afu_dev->device.driver = &drv->driver;
 
 	/* call the driver probe() function */
 	ret = drv->probe(afu_dev);
-	if (ret) {
+	if (ret)
 		afu_dev->driver = NULL;
-		afu_dev->device.driver = NULL;
-	}
+	else
+		afu_dev->device.driver = &drv->driver;
 
 	return ret;
 }
@@ -302,16 +312,26 @@ ifpga_probe_all_drivers(struct rte_afu_device *afu_dev)
 		return -1;
 
 	/* Check if a driver is already loaded */
-	if (afu_dev->driver != NULL)
-		return 0;
+	if (rte_dev_is_probed(&afu_dev->device)) {
+		IFPGA_BUS_DEBUG("Device %s is already probed\n",
+				rte_ifpga_device_name(afu_dev));
+		return -EEXIST;
+	}
 
 	TAILQ_FOREACH(drv, &ifpga_afu_drv_list, next) {
-		if (ifpga_probe_one_driver(drv, afu_dev)) {
-			ret = -1;
-			break;
-		}
+		ret = ifpga_probe_one_driver(drv, afu_dev);
+		if (ret < 0)
+			/* negative value is an error */
+			return ret;
+		if (ret > 0)
+			/* positive value means driver doesn't support it */
+			continue;
+		return 0;
 	}
-	return ret;
+	if ((ret > 0) && (afu_dev->driver == NULL))
+		return 0;
+	else
+		return ret;
 }
 
 /*
@@ -326,14 +346,13 @@ ifpga_probe(void)
 	int ret = 0;
 
 	TAILQ_FOREACH(afu_dev, &ifpga_afu_dev_list, next) {
-		if (afu_dev->device.driver)
-			continue;
-
 		ret = ifpga_probe_all_drivers(afu_dev);
+		if (ret == -EEXIST)
+			continue;
 		if (ret < 0)
 			IFPGA_BUS_ERR("failed to initialize %s device\n",
 				rte_ifpga_device_name(afu_dev));
-		}
+	}
 
 	return ret;
 }