X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Fcommon%2Feal_common_dev.c;h=36063329afea45f856f90a5134e60a18967cdfb3;hb=a3ee360f4440553557618c63c24f6fa01b71bf59;hp=a400ddd0070ef62d2c61807ec72fbdd8a90edcc4;hpb=00e62aae69c0fcfc221736a4639cbc88e1049668;p=dpdk.git

diff --git a/lib/librte_eal/common/eal_common_dev.c b/lib/librte_eal/common/eal_common_dev.c
index a400ddd007..36063329af 100644
--- a/lib/librte_eal/common/eal_common_dev.c
+++ b/lib/librte_eal/common/eal_common_dev.c
@@ -37,6 +37,7 @@
 #include <inttypes.h>
 #include <sys/queue.h>
 
+#include <rte_bus.h>
 #include <rte_dev.h>
 #include <rte_devargs.h>
 #include <rte_debug.h>
@@ -45,6 +46,25 @@
 
 #include "eal_private.h"
 
+static int cmp_detached_dev_name(const struct rte_device *dev,
+	const void *_name)
+{
+	const char *name = _name;
+
+	/* skip attached devices */
+	if (dev->driver != NULL)
+		return 1;
+
+	return strcmp(dev->name, name);
+}
+
+static int cmp_dev_name(const struct rte_device *dev, const void *_name)
+{
+	const char *name = _name;
+
+	return strcmp(dev->name, name);
+}
+
 int rte_eal_dev_attach(const char *name, const char *devargs)
 {
 	struct rte_pci_addr addr;
@@ -92,3 +112,71 @@ err:
 	RTE_LOG(ERR, EAL, "Driver cannot detach the device (%s)\n", name);
 	return -EINVAL;
 }
+
+int rte_eal_hotplug_add(const char *busname, const char *devname,
+			const char *devargs)
+{
+	struct rte_bus *bus;
+	struct rte_device *dev;
+	int ret;
+
+	bus = rte_bus_find_by_name(busname);
+	if (bus == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot find bus (%s)\n", busname);
+		return -ENOENT;
+	}
+
+	if (bus->plug == NULL) {
+		RTE_LOG(ERR, EAL, "Function plug not supported by bus (%s)\n",
+			bus->name);
+		return -ENOTSUP;
+	}
+
+	ret = bus->scan();
+	if (ret)
+		return ret;
+
+	dev = bus->find_device(NULL, cmp_detached_dev_name, devname);
+	if (dev == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot find unplugged device (%s)\n",
+			devname);
+		return -EINVAL;
+	}
+
+	ret = bus->plug(dev, devargs);
+	if (ret)
+		RTE_LOG(ERR, EAL, "Driver cannot attach the device (%s)\n",
+			dev->name);
+	return ret;
+}
+
+int rte_eal_hotplug_remove(const char *busname, const char *devname)
+{
+	struct rte_bus *bus;
+	struct rte_device *dev;
+	int ret;
+
+	bus = rte_bus_find_by_name(busname);
+	if (bus == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot find bus (%s)\n", busname);
+		return -ENOENT;
+	}
+
+	if (bus->unplug == NULL) {
+		RTE_LOG(ERR, EAL, "Function unplug not supported by bus (%s)\n",
+			bus->name);
+		return -ENOTSUP;
+	}
+
+	dev = bus->find_device(NULL, cmp_dev_name, devname);
+	if (dev == NULL) {
+		RTE_LOG(ERR, EAL, "Cannot find plugged device (%s)\n", devname);
+		return -EINVAL;
+	}
+
+	ret = bus->unplug(dev);
+	if (ret)
+		RTE_LOG(ERR, EAL, "Driver cannot detach the device (%s)\n",
+			dev->name);
+	return ret;
+}