eal: introduce generalized device

Signed-off-by: Jan Viktorin <viktorin@rehivetech.com>
Signed-off-by: Shreyansh Jain <shreyansh.jain@nxp.com>
Acked-by: David Marchand <david.marchand@6wind.com>

diff --git a/lib/librte_eal/common/eal_common_dev.c b/lib/librte_eal/common/eal_common_dev.c
index afa33fa..d1f0ad8 100644 (file)
--- a/lib/librte_eal/common/eal_common_dev.c
+++ b/lib/librte_eal/common/eal_common_dev.c
@@ -48,6 +48,9 @@
 /** Global list of device drivers. */
 static struct rte_driver_list dev_driver_list =
        TAILQ_HEAD_INITIALIZER(dev_driver_list);
+/** Global list of device drivers. */
+static struct rte_device_list dev_device_list =
+       TAILQ_HEAD_INITIALIZER(dev_device_list);
 
 /* register a driver */
 void
@@ -63,6 +66,16 @@ rte_eal_driver_unregister(struct rte_driver *driver)
        TAILQ_REMOVE(&dev_driver_list, driver, next);
 }
 
+void rte_eal_device_insert(struct rte_device *dev)
+{
+       TAILQ_INSERT_TAIL(&dev_device_list, dev, next);
+}
+
+void rte_eal_device_remove(struct rte_device *dev)
+{
+       TAILQ_REMOVE(&dev_device_list, dev, next);
+}
+
 int
 rte_eal_dev_init(void)
 {

diff --git a/lib/librte_eal/common/include/rte_dev.h b/lib/librte_eal/common/include/rte_dev.h
index 5c314bf..d159991 100644 (file)
--- a/lib/librte_eal/common/include/rte_dev.h
+++ b/lib/librte_eal/common/include/rte_dev.h
@@ -111,6 +111,37 @@ struct rte_mem_resource {
 
 /** Double linked list of device drivers. */
 TAILQ_HEAD(rte_driver_list, rte_driver);
+/** Double linked list of devices. */
+TAILQ_HEAD(rte_device_list, rte_device);
+
+/* Forward declaration */
+struct rte_driver;
+
+/**
+ * A structure describing a generic device.
+ */
+struct rte_device {
+       TAILQ_ENTRY(rte_device) next; /**< Next device */
+       struct rte_driver *driver;    /**< Associated driver */
+       int numa_node;                /**< NUMA node connection */
+       struct rte_devargs *devargs;  /**< Device user arguments */
+};
+
+/**
+ * Insert a device detected by a bus scanning.
+ *
+ * @param dev
+ *   A pointer to a rte_device structure describing the detected device.
+ */
+void rte_eal_device_insert(struct rte_device *dev);
+
+/**
+ * Remove a device (e.g. when being unplugged).
+ *
+ * @param dev
+ *   A pointer to a rte_device structure describing the device to be removed.
+ */
+void rte_eal_device_remove(struct rte_device *dev);
 
 /**
  * A structure describing a device driver.