[dpdk-dev] [PATCH v3 2/6] eventdev: define southbound driver interface

[Jerin Jacob <jerin.jacob@caviumnetworks.com>]

Signed-off-by: Jerin Jacob <jerin.jacob@caviumnetworks.com>
---
 lib/librte_eventdev/rte_eventdev.h     |  38 +++++
 lib/librte_eventdev/rte_eventdev_pmd.h | 291 +++++++++++++++++++++++++++++++++
 2 files changed, 329 insertions(+)
 create mode 100644 lib/librte_eventdev/rte_eventdev_pmd.h

diff --git a/lib/librte_eventdev/rte_eventdev.h b/lib/librte_eventdev/rte_eventdev.h
index e190a3e..16115f7 100644
--- a/lib/librte_eventdev/rte_eventdev.h
+++ b/lib/librte_eventdev/rte_eventdev.h
@@ -972,6 +972,44 @@ struct rte_event {
 	};
 };
 
+struct rte_eventdev_ops;
+struct rte_eventdev;
+
+typedef void (*event_schedule_t)(struct rte_eventdev *dev);
+/**< @internal Schedule one or more events in the event dev. */
+
+typedef uint16_t (*event_enqueue_t)(void *port, const struct rte_event *ev);
+/**< @internal Enqueue event on port of a device */
+
+typedef uint16_t (*event_enqueue_burst_t)(void *port,
+			const struct rte_event ev[], uint16_t nb_events);
+/**< @internal Enqueue burst of events on port of a device */
+
+typedef uint16_t (*event_dequeue_t)(void *port, struct rte_event *ev,
+		uint64_t timeout_ticks);
+/**< @internal Dequeue event from port of a device */
+
+typedef uint16_t (*event_dequeue_burst_t)(void *port, struct rte_event ev[],
+		uint16_t nb_events, uint64_t timeout_ticks);
+/**< @internal Dequeue burst of events from port of a device */
+
+
+/** @internal The data structure associated with each event device. */
+struct rte_eventdev {
+	event_schedule_t schedule;
+	/**< Pointer to PMD schedule function. */
+	event_enqueue_t enqueue;
+	/**< Pointer to PMD enqueue function. */
+	event_enqueue_burst_t enqueue_burst;
+	/**< Pointer to PMD enqueue burst function. */
+	event_dequeue_t dequeue;
+	/**< Pointer to PMD dequeue function. */
+	event_dequeue_burst_t dequeue_burst;
+	/**< Pointer to PMD dequeue burst function. */
+
+} __rte_cache_aligned;
+
+
 /**
  * Schedule one or more events in the event dev.
  *
diff --git a/lib/librte_eventdev/rte_eventdev_pmd.h b/lib/librte_eventdev/rte_eventdev_pmd.h
new file mode 100644
index 0000000..2677c37
--- /dev/null
+++ b/lib/librte_eventdev/rte_eventdev_pmd.h
@@ -0,0 +1,291 @@
+/*
+ *
+ *   Copyright(c) 2016 Cavium networks. All rights reserved.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Cavium networks nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _RTE_EVENTDEV_PMD_H_
+#define _RTE_EVENTDEV_PMD_H_
+
+/** @file
+ * RTE Event PMD APIs
+ *
+ * @note
+ * These API are from event PMD only and user applications should not call
+ * them directly.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "rte_eventdev.h"
+
+/**
+ * Definitions of all functions exported by a driver through the
+ * the generic structure of type *event_dev_ops* supplied in the
+ * *rte_eventdev* structure associated with a device.
+ */
+
+/**
+ * Get device information of a device.
+ *
+ * @param dev
+ *   Event device pointer
+ * @param dev_info
+ *   Event device information structure
+ *
+ * @return
+ *   Returns 0 on success
+ */
+typedef void (*eventdev_info_get_t)(struct rte_eventdev *dev,
+		struct rte_event_dev_info *dev_info);
+
+/**
+ * Configure a device.
+ *
+ * @param dev
+ *   Event device pointer
+ *
+ * @return
+ *   Returns 0 on success
+ */
+typedef int (*eventdev_configure_t)(const struct rte_eventdev *dev);
+
+/**
+ * Start a configured device.
+ *
+ * @param dev
+ *   Event device pointer
+ *
+ * @return
+ *   Returns 0 on success
+ */
+typedef int (*eventdev_start_t)(struct rte_eventdev *dev);
+
+/**
+ * Stop a configured device.
+ *
+ * @param dev
+ *   Event device pointer
+ */
+typedef void (*eventdev_stop_t)(struct rte_eventdev *dev);
+
+/**
+ * Close a configured device.
+ *
+ * @param dev
+ *   Event device pointer
+ *
+ * @return
+ * - 0 on success
+ * - (-EAGAIN) if can't close as device is busy
+ */
+typedef int (*eventdev_close_t)(struct rte_eventdev *dev);
+
+/**
+ * Retrieve the default event queue configuration.
+ *
+ * @param dev
+ *   Event device pointer
+ * @param queue_id
+ *   Event queue index
+ * @param[out] queue_conf
+ *   Event queue configuration structure
+ *
+ */
+typedef void (*eventdev_queue_default_conf_get_t)(struct rte_eventdev *dev,
+		uint8_t queue_id, struct rte_event_queue_conf *queue_conf);
+
+/**
+ * Setup an event queue.
+ *
+ * @param dev
+ *   Event device pointer
+ * @param queue_id
+ *   Event queue index
+ * @param queue_conf
+ *   Event queue configuration structure
+ *
+ * @return
+ *   Returns 0 on success.
+ */
+typedef int (*eventdev_queue_setup_t)(struct rte_eventdev *dev,
+		uint8_t queue_id,
+		const struct rte_event_queue_conf *queue_conf);
+
+/**
+ * Release resources allocated by given event queue.
+ *
+ * @param queue_id
+ *   Event queue index
+ *
+ */
+typedef void (*eventdev_queue_release_t)(uint8_t queue_id);
+
+/**
+ * Retrieve the default event port configuration.
+ *
+ * @param dev
+ *   Event device pointer
+ * @param port_id
+ *   Event port index
+ * @param[out] port_conf
+ *   Event port configuration structure
+ *
+ */
+typedef void (*eventdev_port_default_conf_get_t)(struct rte_eventdev *dev,
+		uint8_t port_id, struct rte_event_port_conf *port_conf);
+
+/**
+ * Setup an event port.
+ *
+ * @param dev
+ *   Event device pointer
+ * @param port_id
+ *   Event port index
+ * @param port_conf
+ *   Event port configuration structure
+ *
+ * @return
+ *   Returns 0 on success.
+ */
+typedef int (*eventdev_port_setup_t)(struct rte_eventdev *dev,
+		uint8_t port_id,
+		const struct rte_event_port_conf *port_conf);
+
+/**
+ * Release memory resources allocated by given event port.
+ *
+ * @param port
+ *   Event port pointer
+ *
+ */
+typedef void (*eventdev_port_release_t)(void *port);
+
+/**
+ * Link multiple source event queues to destination event port.
+ *
+ * @param port
+ *   Event port pointer
+ * @param link
+ *   Points to an array of *nb_links* event queues to be linked
+ *   to the event port.
+ * @param priorities
+ *   Points to an array of *nb_links* service priorities associated with each
+ *   event queue link to event port.
+ * @param nb_links
+ *   The number of links to establish
+ *
+ * @return
+ *   Returns 0 on success.
+ *
+ */
+typedef int (*eventdev_port_link_t)(void *port,
+		const uint8_t queues[], const uint8_t priorities[],
+		uint16_t nb_links);
+
+/**
+ * Unlink multiple source event queues from destination event port.
+ *
+ * @param port
+ *   Event port pointer
+ * @param queues
+ *   An array of *nb_unlinks* event queues to be unlinked from the event port.
+ * @param nb_unlinks
+ *   The number of unlinks to establish
+ *
+ * @return
+ *   Returns 0 on success.
+ *
+ */
+typedef int (*eventdev_port_unlink_t)(void *port,
+		uint8_t queues[], uint16_t nb_unlinks);
+
+/**
+ * Converts nanoseconds to *timeout_ticks* value for rte_event_dequeue()
+ *
+ * @param dev
+ *   Event device pointer
+ * @param ns
+ *   Wait time in nanosecond
+ * @param[out] timeout_ticks
+ *   Value for the *timeout_ticks* parameter in rte_event_dequeue() function
+ *
+ */
+typedef void (*eventdev_dequeue_timeout_ticks_t)(struct rte_eventdev *dev,
+		uint64_t ns, uint64_t *timeout_ticks);
+
+/**
+ * Dump internal information
+ *
+ * @param dev
+ *   Event device pointer
+ * @param f
+ *   A pointer to a file for output
+ *
+ */
+typedef void (*eventdev_dump_t)(struct rte_eventdev *dev, FILE *f);
+
+/** Event device operations function pointer table */
+struct rte_eventdev_ops {
+	eventdev_info_get_t dev_infos_get;	/**< Get device info. */
+	eventdev_configure_t dev_configure;	/**< Configure device. */
+	eventdev_start_t dev_start;		/**< Start device. */
+	eventdev_stop_t dev_stop;		/**< Stop device. */
+	eventdev_close_t dev_close;		/**< Close device. */
+
+	eventdev_queue_default_conf_get_t queue_def_conf;
+	/**< Get default queue configuration. */
+	eventdev_queue_setup_t queue_setup;
+	/**< Set up an event queue. */
+	eventdev_queue_release_t queue_release;
+	/**< Release an event queue. */
+
+	eventdev_port_default_conf_get_t port_def_conf;
+	/**< Get default port configuration. */
+	eventdev_port_setup_t port_setup;
+	/**< Set up an event port. */
+	eventdev_port_release_t port_release;
+	/**< Release an event port. */
+
+	eventdev_port_link_t port_link;
+	/**< Link event queues to an event port. */
+	eventdev_port_unlink_t port_unlink;
+	/**< Unlink event queues from an event port. */
+	eventdev_dequeue_timeout_ticks_t timeout_ticks;
+	/**< Converts ns to *timeout_ticks* value for rte_event_dequeue() */
+	eventdev_dump_t dump;
+	/* Dump internal information */
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_EVENTDEV_PMD_H_ */
-- 
2.5.5