--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017 Intel Corporation
+ */
+
+#include <string.h>
+
+#include <rte_common.h>
+#include <rte_bus_vdev.h>
+#include <rte_malloc.h>
+#include <rte_ring.h>
+#include <rte_kvargs.h>
+
+#include <rte_bbdev.h>
+#include <rte_bbdev_pmd.h>
+
+#define DRIVER_NAME bbdev_null
+
+/* NULL BBDev logging ID */
+static int bbdev_null_logtype;
+
+/* Helper macro for logging */
+#define rte_bbdev_log(level, fmt, ...) \
+ rte_log(RTE_LOG_ ## level, bbdev_null_logtype, fmt "\n", ##__VA_ARGS__)
+
+#define rte_bbdev_log_debug(fmt, ...) \
+ rte_bbdev_log(DEBUG, RTE_STR(__LINE__) ":%s() " fmt, __func__, \
+ ##__VA_ARGS__)
+
+/* Initialisation params structure that can be used by null BBDEV driver */
+struct bbdev_null_params {
+ int socket_id; /*< Null BBDEV socket */
+ uint16_t queues_num; /*< Null BBDEV queues number */
+};
+
+/* Accecptable params for null BBDEV devices */
+#define BBDEV_NULL_MAX_NB_QUEUES_ARG "max_nb_queues"
+#define BBDEV_NULL_SOCKET_ID_ARG "socket_id"
+
+static const char * const bbdev_null_valid_params[] = {
+ BBDEV_NULL_MAX_NB_QUEUES_ARG,
+ BBDEV_NULL_SOCKET_ID_ARG
+};
+
+/* private data structure */
+struct bbdev_private {
+ unsigned int max_nb_queues; /**< Max number of queues */
+};
+
+/* queue */
+struct bbdev_queue {
+ struct rte_ring *processed_pkts; /* Ring for processed packets */
+} __rte_cache_aligned;
+
+/* Get device info */
+static void
+info_get(struct rte_bbdev *dev, struct rte_bbdev_driver_info *dev_info)
+{
+ struct bbdev_private *internals = dev->data->dev_private;
+
+ static const struct rte_bbdev_op_cap bbdev_capabilities[] = {
+ RTE_BBDEV_END_OF_CAPABILITIES_LIST(),
+ };
+
+ static struct rte_bbdev_queue_conf default_queue_conf = {
+ .queue_size = RTE_BBDEV_QUEUE_SIZE_LIMIT,
+ };
+
+ default_queue_conf.socket = dev->data->socket_id;
+
+ dev_info->driver_name = RTE_STR(DRIVER_NAME);
+ dev_info->max_num_queues = internals->max_nb_queues;
+ dev_info->queue_size_lim = RTE_BBDEV_QUEUE_SIZE_LIMIT;
+ dev_info->hardware_accelerated = false;
+ dev_info->max_queue_priority = 0;
+ dev_info->default_queue_conf = default_queue_conf;
+ dev_info->capabilities = bbdev_capabilities;
+ dev_info->cpu_flag_reqs = NULL;
+ dev_info->min_alignment = 0;
+
+ rte_bbdev_log_debug("got device info from %u", dev->data->dev_id);
+}
+
+/* Release queue */
+static int
+q_release(struct rte_bbdev *dev, uint16_t q_id)
+{
+ struct bbdev_queue *q = dev->data->queues[q_id].queue_private;
+
+ if (q != NULL) {
+ rte_ring_free(q->processed_pkts);
+ rte_free(q);
+ dev->data->queues[q_id].queue_private = NULL;
+ }
+
+ rte_bbdev_log_debug("released device queue %u:%u",
+ dev->data->dev_id, q_id);
+ return 0;
+}
+
+/* Setup a queue */
+static int
+q_setup(struct rte_bbdev *dev, uint16_t q_id,
+ const struct rte_bbdev_queue_conf *queue_conf)
+{
+ struct bbdev_queue *q;
+ char ring_name[RTE_RING_NAMESIZE];
+ snprintf(ring_name, RTE_RING_NAMESIZE, RTE_STR(DRIVER_NAME) "%u:%u",
+ dev->data->dev_id, q_id);
+
+ /* Allocate the queue data structure. */
+ q = rte_zmalloc_socket(RTE_STR(DRIVER_NAME), sizeof(*q),
+ RTE_CACHE_LINE_SIZE, queue_conf->socket);
+ if (q == NULL) {
+ rte_bbdev_log(ERR, "Failed to allocate queue memory");
+ return -ENOMEM;
+ }
+
+ q->processed_pkts = rte_ring_create(ring_name, queue_conf->queue_size,
+ queue_conf->socket, RING_F_SP_ENQ | RING_F_SC_DEQ);
+ if (q->processed_pkts == NULL) {
+ rte_bbdev_log(ERR, "Failed to create ring");
+ goto free_q;
+ }
+
+ dev->data->queues[q_id].queue_private = q;
+ rte_bbdev_log_debug("setup device queue %s", ring_name);
+ return 0;
+
+free_q:
+ rte_free(q);
+ return -EFAULT;
+}
+
+static const struct rte_bbdev_ops pmd_ops = {
+ .info_get = info_get,
+ .queue_setup = q_setup,
+ .queue_release = q_release
+};
+
+/* Enqueue decode burst */
+static uint16_t
+enqueue_dec_ops(struct rte_bbdev_queue_data *q_data,
+ struct rte_bbdev_dec_op **ops, uint16_t nb_ops)
+{
+ struct bbdev_queue *q = q_data->queue_private;
+ uint16_t nb_enqueued = rte_ring_enqueue_burst(q->processed_pkts,
+ (void **)ops, nb_ops, NULL);
+
+ q_data->queue_stats.enqueue_err_count += nb_ops - nb_enqueued;
+ q_data->queue_stats.enqueued_count += nb_enqueued;
+
+ return nb_enqueued;
+}
+
+/* Enqueue encode burst */
+static uint16_t
+enqueue_enc_ops(struct rte_bbdev_queue_data *q_data,
+ struct rte_bbdev_enc_op **ops, uint16_t nb_ops)
+{
+ struct bbdev_queue *q = q_data->queue_private;
+ uint16_t nb_enqueued = rte_ring_enqueue_burst(q->processed_pkts,
+ (void **)ops, nb_ops, NULL);
+
+ q_data->queue_stats.enqueue_err_count += nb_ops - nb_enqueued;
+ q_data->queue_stats.enqueued_count += nb_enqueued;
+
+ return nb_enqueued;
+}
+
+/* Dequeue decode burst */
+static uint16_t
+dequeue_dec_ops(struct rte_bbdev_queue_data *q_data,
+ struct rte_bbdev_dec_op **ops, uint16_t nb_ops)
+{
+ struct bbdev_queue *q = q_data->queue_private;
+ uint16_t nb_dequeued = rte_ring_dequeue_burst(q->processed_pkts,
+ (void **)ops, nb_ops, NULL);
+ q_data->queue_stats.dequeued_count += nb_dequeued;
+
+ return nb_dequeued;
+}
+
+/* Dequeue encode burst */
+static uint16_t
+dequeue_enc_ops(struct rte_bbdev_queue_data *q_data,
+ struct rte_bbdev_enc_op **ops, uint16_t nb_ops)
+{
+ struct bbdev_queue *q = q_data->queue_private;
+ uint16_t nb_dequeued = rte_ring_dequeue_burst(q->processed_pkts,
+ (void **)ops, nb_ops, NULL);
+ q_data->queue_stats.dequeued_count += nb_dequeued;
+
+ return nb_dequeued;
+}
+
+/* Parse 16bit integer from string argument */
+static inline int
+parse_u16_arg(const char *key, const char *value, void *extra_args)
+{
+ uint16_t *u16 = extra_args;
+ unsigned int long result;
+
+ if ((value == NULL) || (extra_args == NULL))
+ return -EINVAL;
+ errno = 0;
+ result = strtoul(value, NULL, 0);
+ if ((result >= (1 << 16)) || (errno != 0)) {
+ rte_bbdev_log(ERR, "Invalid value %lu for %s", result, key);
+ return -ERANGE;
+ }
+ *u16 = (uint16_t)result;
+ return 0;
+}
+
+/* Parse parameters used to create device */
+static int
+parse_bbdev_null_params(struct bbdev_null_params *params,
+ const char *input_args)
+{
+ struct rte_kvargs *kvlist = NULL;
+ int ret = 0;
+
+ if (params == NULL)
+ return -EINVAL;
+ if (input_args) {
+ kvlist = rte_kvargs_parse(input_args, bbdev_null_valid_params);
+ if (kvlist == NULL)
+ return -EFAULT;
+
+ ret = rte_kvargs_process(kvlist, bbdev_null_valid_params[0],
+ &parse_u16_arg, ¶ms->queues_num);
+ if (ret < 0)
+ goto exit;
+
+ ret = rte_kvargs_process(kvlist, bbdev_null_valid_params[1],
+ &parse_u16_arg, ¶ms->socket_id);
+ if (ret < 0)
+ goto exit;
+
+ if (params->socket_id >= RTE_MAX_NUMA_NODES) {
+ rte_bbdev_log(ERR, "Invalid socket, must be < %u",
+ RTE_MAX_NUMA_NODES);
+ goto exit;
+ }
+ }
+
+exit:
+ if (kvlist)
+ rte_kvargs_free(kvlist);
+ return ret;
+}
+
+/* Create device */
+static int
+null_bbdev_create(struct rte_vdev_device *vdev,
+ struct bbdev_null_params *init_params)
+{
+ struct rte_bbdev *bbdev;
+ const char *name = rte_vdev_device_name(vdev);
+
+ bbdev = rte_bbdev_allocate(name);
+ if (bbdev == NULL)
+ return -ENODEV;
+
+ bbdev->data->dev_private = rte_zmalloc_socket(name,
+ sizeof(struct bbdev_private), RTE_CACHE_LINE_SIZE,
+ init_params->socket_id);
+ if (bbdev->data->dev_private == NULL) {
+ rte_bbdev_release(bbdev);
+ return -ENOMEM;
+ }
+
+ bbdev->dev_ops = &pmd_ops;
+ bbdev->device = &vdev->device;
+ bbdev->data->socket_id = init_params->socket_id;
+ bbdev->intr_handle = NULL;
+
+ /* register rx/tx burst functions for data path */
+ bbdev->dequeue_enc_ops = dequeue_enc_ops;
+ bbdev->dequeue_dec_ops = dequeue_dec_ops;
+ bbdev->enqueue_enc_ops = enqueue_enc_ops;
+ bbdev->enqueue_dec_ops = enqueue_dec_ops;
+ ((struct bbdev_private *) bbdev->data->dev_private)->max_nb_queues =
+ init_params->queues_num;
+
+ return 0;
+}
+
+/* Initialise device */
+static int
+null_bbdev_probe(struct rte_vdev_device *vdev)
+{
+ struct bbdev_null_params init_params = {
+ rte_socket_id(),
+ RTE_BBDEV_DEFAULT_MAX_NB_QUEUES
+ };
+ const char *name;
+ const char *input_args;
+
+ if (vdev == NULL)
+ return -EINVAL;
+
+ name = rte_vdev_device_name(vdev);
+ if (name == NULL)
+ return -EINVAL;
+
+ input_args = rte_vdev_device_args(vdev);
+ parse_bbdev_null_params(&init_params, input_args);
+
+ rte_bbdev_log_debug("Init %s on NUMA node %d with max queues: %d",
+ name, init_params.socket_id, init_params.queues_num);
+
+ return null_bbdev_create(vdev, &init_params);
+}
+
+/* Uninitialise device */
+static int
+null_bbdev_remove(struct rte_vdev_device *vdev)
+{
+ struct rte_bbdev *bbdev;
+ const char *name;
+
+ if (vdev == NULL)
+ return -EINVAL;
+
+ name = rte_vdev_device_name(vdev);
+ if (name == NULL)
+ return -EINVAL;
+
+ bbdev = rte_bbdev_get_named_dev(name);
+ if (bbdev == NULL)
+ return -EINVAL;
+
+ rte_free(bbdev->data->dev_private);
+
+ return rte_bbdev_release(bbdev);
+}
+
+static struct rte_vdev_driver bbdev_null_pmd_drv = {
+ .probe = null_bbdev_probe,
+ .remove = null_bbdev_remove
+};
+
+RTE_PMD_REGISTER_VDEV(DRIVER_NAME, bbdev_null_pmd_drv);
+RTE_PMD_REGISTER_PARAM_STRING(DRIVER_NAME,
+ BBDEV_NULL_MAX_NB_QUEUES_ARG"=<int> "
+ BBDEV_NULL_SOCKET_ID_ARG"=<int>");
+
+RTE_INIT(null_bbdev_init_log);
+static void
+null_bbdev_init_log(void)
+{
+ bbdev_null_logtype = rte_log_register("pmd.bb.null");
+ if (bbdev_null_logtype >= 0)
+ rte_log_set_level(bbdev_null_logtype, RTE_LOG_NOTICE);
+}
Code Review / deb_dpdk.git / blobdiff