[PATCH 3/3] bus/fslmc: add support for hotplug of dpni

[Hemant Agrawal <hemant.agrawal@nxp.com>]

This patch implements the plug and unplug function to support
attach/detach of dpni interfaces.

Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com>
---
 drivers/bus/fslmc/fslmc_bus.c | 56 +++++++++++++++++++++++++++++++----
 1 file changed, 50 insertions(+), 6 deletions(-)

diff --git a/drivers/bus/fslmc/fslmc_bus.c b/drivers/bus/fslmc/fslmc_bus.c
index 49c61c9d2d..4529ec5085 100644
--- a/drivers/bus/fslmc/fslmc_bus.c
+++ b/drivers/bus/fslmc/fslmc_bus.c
@@ -589,17 +589,61 @@ rte_dpaa2_get_iommu_class(void)
 }
 
 static int
-fslmc_bus_plug(struct rte_device *dev __rte_unused)
+fslmc_bus_plug(struct rte_device *rte_dev)
 {
-	/* No operation is performed while plugging the device */
-	return 0;
+	int ret = 0;
+	struct rte_dpaa2_device *dev = container_of(rte_dev,
+			struct rte_dpaa2_device, device);
+	struct rte_dpaa2_driver *drv;
+
+	TAILQ_FOREACH(drv, &rte_fslmc_bus.driver_list, next) {
+		ret = rte_fslmc_match(drv, dev);
+		if (ret)
+			continue;
+
+		if (!drv->probe)
+			continue;
+
+		if (rte_dev_is_probed(&dev->device))
+			continue;
+
+		if (dev->device.devargs &&
+		    dev->device.devargs->policy == RTE_DEV_BLOCKED) {
+			DPAA2_BUS_DEBUG("%s Blocked, skipping",
+				      dev->device.name);
+			continue;
+		}
+
+		ret = drv->probe(drv, dev);
+		if (ret) {
+			DPAA2_BUS_ERR("Unable to probe");
+		} else {
+			dev->driver = drv;
+			dev->device.driver = &drv->driver;
+			DPAA2_BUS_INFO("%s Plugged",  dev->device.name);
+		}
+		break;
+	}
+
+	return ret;
 }
 
 static int
-fslmc_bus_unplug(struct rte_device *dev __rte_unused)
+fslmc_bus_unplug(struct rte_device *rte_dev)
 {
-	/* No operation is performed while unplugging the device */
-	return 0;
+	struct rte_dpaa2_device *dev = container_of(rte_dev,
+			struct rte_dpaa2_device, device);
+	struct rte_dpaa2_driver *drv = dev->driver;
+
+	if (drv && drv->remove) {
+		drv->remove(dev);
+		dev->driver = NULL;
+		dev->device.driver = NULL;
+		DPAA2_BUS_INFO("%s Un-Plugged",  dev->device.name);
+		return 0;
+	}
+
+	return -ENODEV;
 }
 
 static void *
-- 
2.25.1