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+/* Initialisation params structure that can be used by LA12xx BBDEV driver */ +struct bbdev_la12xx_params { + uint8_t queues_num; /*< LA12xx BBDEV queues number */ +}; + +#define BBDEV_LA12XX_MAX_NB_QUEUES_ARG "max_nb_queues" + +static const char * const bbdev_la12xx_valid_params[] = { + BBDEV_LA12XX_MAX_NB_QUEUES_ARG, +}; + /* private data structure */ struct bbdev_la12xx_private { unsigned int max_nb_queues; /**< Max number of queues */ }; +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)) { + BBDEV_LA12XX_PMD_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_la12xx_params(struct bbdev_la12xx_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_la12xx_valid_params); + if (kvlist == NULL) + return -EFAULT; + + ret = rte_kvargs_process(kvlist, bbdev_la12xx_valid_params[0], + &parse_u16_arg, ¶ms->queues_num); + if (ret < 0) + goto exit; + + } + +exit: + if (kvlist) + rte_kvargs_free(kvlist); + return ret; +} + /* Create device */ static int -la12xx_bbdev_create(struct rte_vdev_device *vdev) +la12xx_bbdev_create(struct rte_vdev_device *vdev, + struct bbdev_la12xx_params *init_params) { struct rte_bbdev *bbdev; const char *name = rte_vdev_device_name(vdev); @@ -62,7 +121,11 @@ la12xx_bbdev_create(struct rte_vdev_device *vdev) static int la12xx_bbdev_probe(struct rte_vdev_device *vdev) { + struct bbdev_la12xx_params init_params = { + 8, -1, + }; const char *name; + const char *input_args; PMD_INIT_FUNC_TRACE(); @@ -73,7 +136,10 @@ la12xx_bbdev_probe(struct rte_vdev_device *vdev) if (name == NULL) return -EINVAL; - return la12xx_bbdev_create(vdev); + input_args = rte_vdev_device_args(vdev); + parse_bbdev_la12xx_params(&init_params, input_args); + + return la12xx_bbdev_create(vdev, &init_params); } /* Uninitialise device */ @@ -107,3 +173,5 @@ static struct rte_vdev_driver bbdev_la12xx_pmd_drv = { }; RTE_PMD_REGISTER_VDEV(DRIVER_NAME, bbdev_la12xx_pmd_drv); +RTE_PMD_REGISTER_PARAM_STRING(DRIVER_NAME, + BBDEV_LA12XX_MAX_NB_QUEUES_ARG"=");