X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=drivers%2Fbaseband%2Fnull%2Fbbdev_null.c;fp=drivers%2Fbaseband%2Fnull%2Fbbdev_null.c;h=76fc9d7acec9d6fdfa489d687d8dbe3f8827ac9d;hb=1bd9b61222f3a81ffe770fc00b70ded6e760c42b;hp=0000000000000000000000000000000000000000;hpb=bb4e158029645f37809fcf81a3acddd6fa11f88a;p=deb_dpdk.git diff --git a/drivers/baseband/null/bbdev_null.c b/drivers/baseband/null/bbdev_null.c new file mode 100644 index 00000000..76fc9d7a --- /dev/null +++ b/drivers/baseband/null/bbdev_null.c @@ -0,0 +1,358 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright(c) 2017 Intel Corporation + */ + +#include + +#include +#include +#include +#include +#include + +#include +#include + +#define DRIVER_NAME baseband_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_dl_queue_priority = 0; + dev_info->max_ul_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"= " + BBDEV_NULL_SOCKET_ID_ARG"="); +RTE_PMD_REGISTER_ALIAS(DRIVER_NAME, bbdev_null); + +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); +}