update sources to ceph Nautilus 14.2.1

[ceph.git] / ceph / src / spdk / dpdk / drivers / baseband / turbo_sw / bbdev_turbo_software.c

/* 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_cycles.h>

#include <rte_bbdev.h>
#include <rte_bbdev_pmd.h>

#include <phy_turbo.h>
#include <phy_crc.h>
#include <phy_rate_match.h>
#include <divide.h>

#define DRIVER_NAME baseband_turbo_sw

/* Turbo SW PMD logging ID */
static int bbdev_turbo_sw_logtype;

/* Helper macro for logging */
#define rte_bbdev_log(level, fmt, ...) \
        rte_log(RTE_LOG_ ## level, bbdev_turbo_sw_logtype, fmt "\n", \
                ##__VA_ARGS__)

#define rte_bbdev_log_debug(fmt, ...) \
        rte_bbdev_log(DEBUG, RTE_STR(__LINE__) ":%s() " fmt, __func__, \
                ##__VA_ARGS__)

#define DEINT_INPUT_BUF_SIZE (((RTE_BBDEV_MAX_CB_SIZE >> 3) + 1) * 48)
#define DEINT_OUTPUT_BUF_SIZE (DEINT_INPUT_BUF_SIZE * 6)
#define ADAPTER_OUTPUT_BUF_SIZE ((RTE_BBDEV_MAX_CB_SIZE + 4) * 48)

/* private data structure */
struct bbdev_private {
        unsigned int max_nb_queues;  /**< Max number of queues */
};

/*  Initialisation params structure that can be used by Turbo SW driver */
struct turbo_sw_params {
        int socket_id;  /*< Turbo SW device socket */
        uint16_t queues_num;  /*< Turbo SW device queues number */
};

/* Accecptable params for Turbo SW devices */
#define TURBO_SW_MAX_NB_QUEUES_ARG  "max_nb_queues"
#define TURBO_SW_SOCKET_ID_ARG      "socket_id"

static const char * const turbo_sw_valid_params[] = {
        TURBO_SW_MAX_NB_QUEUES_ARG,
        TURBO_SW_SOCKET_ID_ARG
};

/* queue */
struct turbo_sw_queue {
        /* Ring for processed (encoded/decoded) operations which are ready to
         * be dequeued.
         */
        struct rte_ring *processed_pkts;
        /* Stores input for turbo encoder (used when CRC attachment is
         * performed
         */
        uint8_t *enc_in;
        /* Stores output from turbo encoder */
        uint8_t *enc_out;
        /* Alpha gamma buf for bblib_turbo_decoder() function */
        int8_t *ag;
        /* Temp buf for bblib_turbo_decoder() function */
        uint16_t *code_block;
        /* Input buf for bblib_rate_dematching_lte() function */
        uint8_t *deint_input;
        /* Output buf for bblib_rate_dematching_lte() function */
        uint8_t *deint_output;
        /* Output buf for bblib_turbodec_adapter_lte() function */
        uint8_t *adapter_output;
        /* Operation type of this queue */
        enum rte_bbdev_op_type type;
} __rte_cache_aligned;

/* Calculate index based on Table 5.1.3-3 from TS34.212 */
static inline int32_t
compute_idx(uint16_t k)
{
        int32_t result = 0;

        if (k < RTE_BBDEV_MIN_CB_SIZE || k > RTE_BBDEV_MAX_CB_SIZE)
                return -1;

        if (k > 2048) {
                if ((k - 2048) % 64 != 0)
                        result = -1;

                result = 124 + (k - 2048) / 64;
        } else if (k <= 512) {
                if ((k - 40) % 8 != 0)
                        result = -1;

                result = (k - 40) / 8 + 1;
        } else if (k <= 1024) {
                if ((k - 512) % 16 != 0)
                        result = -1;

                result = 60 + (k - 512) / 16;
        } else { /* 1024 < k <= 2048 */
                if ((k - 1024) % 32 != 0)
                        result = -1;

                result = 92 + (k - 1024) / 32;
        }

        return result;
}

/* Read flag value 0/1 from bitmap */
static inline bool
check_bit(uint32_t bitmap, uint32_t bitmask)
{
        return bitmap & bitmask;
}

/* 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[] = {
                {
                        .type = RTE_BBDEV_OP_TURBO_DEC,
                        .cap.turbo_dec = {
                                .capability_flags =
                                        RTE_BBDEV_TURBO_SUBBLOCK_DEINTERLEAVE |
                                        RTE_BBDEV_TURBO_POS_LLR_1_BIT_IN |
                                        RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN |
                                        RTE_BBDEV_TURBO_CRC_TYPE_24B |
                                        RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP |
                                        RTE_BBDEV_TURBO_EARLY_TERMINATION,
                                .max_llr_modulus = 16,
                                .num_buffers_src = RTE_BBDEV_MAX_CODE_BLOCKS,
                                .num_buffers_hard_out =
                                                RTE_BBDEV_MAX_CODE_BLOCKS,
                                .num_buffers_soft_out = 0,
                        }
                },
                {
                        .type   = RTE_BBDEV_OP_TURBO_ENC,
                        .cap.turbo_enc = {
                                .capability_flags =
                                                RTE_BBDEV_TURBO_CRC_24B_ATTACH |
                                                RTE_BBDEV_TURBO_CRC_24A_ATTACH |
                                                RTE_BBDEV_TURBO_RATE_MATCH |
                                                RTE_BBDEV_TURBO_RV_INDEX_BYPASS,
                                .num_buffers_src = RTE_BBDEV_MAX_CODE_BLOCKS,
                                .num_buffers_dst = RTE_BBDEV_MAX_CODE_BLOCKS,
                        }
                },
                RTE_BBDEV_END_OF_CAPABILITIES_LIST()
        };

        static struct rte_bbdev_queue_conf default_queue_conf = {
                .queue_size = RTE_BBDEV_QUEUE_SIZE_LIMIT,
        };

        static const enum rte_cpu_flag_t cpu_flag = RTE_CPUFLAG_SSE4_2;

        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 = &cpu_flag;
        dev_info->min_alignment = 64;

        rte_bbdev_log_debug("got device info from %u\n", dev->data->dev_id);
}

/* Release queue */
static int
q_release(struct rte_bbdev *dev, uint16_t q_id)
{
        struct turbo_sw_queue *q = dev->data->queues[q_id].queue_private;

        if (q != NULL) {
                rte_ring_free(q->processed_pkts);
                rte_free(q->enc_out);
                rte_free(q->enc_in);
                rte_free(q->ag);
                rte_free(q->code_block);
                rte_free(q->deint_input);
                rte_free(q->deint_output);
                rte_free(q->adapter_output);
                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)
{
        int ret;
        struct turbo_sw_queue *q;
        char name[RTE_RING_NAMESIZE];

        /* 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;
        }

        /* Allocate memory for encoder output. */
        ret = snprintf(name, RTE_RING_NAMESIZE, RTE_STR(DRIVER_NAME)"_enc_o%u:%u",
                        dev->data->dev_id, q_id);
        if ((ret < 0) || (ret >= (int)RTE_RING_NAMESIZE)) {
                rte_bbdev_log(ERR,
                                "Creating queue name for device %u queue %u failed",
                                dev->data->dev_id, q_id);
                return -ENAMETOOLONG;
        }
        q->enc_out = rte_zmalloc_socket(name,
                        ((RTE_BBDEV_MAX_TB_SIZE >> 3) + 3) *
                        sizeof(*q->enc_out) * 3,
                        RTE_CACHE_LINE_SIZE, queue_conf->socket);
        if (q->enc_out == NULL) {
                rte_bbdev_log(ERR,
                        "Failed to allocate queue memory for %s", name);
                goto free_q;
        }

        /* Allocate memory for rate matching output. */
        ret = snprintf(name, RTE_RING_NAMESIZE,
                        RTE_STR(DRIVER_NAME)"_enc_i%u:%u", dev->data->dev_id,
                        q_id);
        if ((ret < 0) || (ret >= (int)RTE_RING_NAMESIZE)) {
                rte_bbdev_log(ERR,
                                "Creating queue name for device %u queue %u failed",
                                dev->data->dev_id, q_id);
                return -ENAMETOOLONG;
        }
        q->enc_in = rte_zmalloc_socket(name,
                        (RTE_BBDEV_MAX_CB_SIZE >> 3) * sizeof(*q->enc_in),
                        RTE_CACHE_LINE_SIZE, queue_conf->socket);
        if (q->enc_in == NULL) {
                rte_bbdev_log(ERR,
                        "Failed to allocate queue memory for %s", name);
                goto free_q;
        }

        /* Allocate memory for Aplha Gamma temp buffer. */
        ret = snprintf(name, RTE_RING_NAMESIZE, RTE_STR(DRIVER_NAME)"_ag%u:%u",
                        dev->data->dev_id, q_id);
        if ((ret < 0) || (ret >= (int)RTE_RING_NAMESIZE)) {
                rte_bbdev_log(ERR,
                                "Creating queue name for device %u queue %u failed",
                                dev->data->dev_id, q_id);
                return -ENAMETOOLONG;
        }
        q->ag = rte_zmalloc_socket(name,
                        RTE_BBDEV_MAX_CB_SIZE * 10 * sizeof(*q->ag),
                        RTE_CACHE_LINE_SIZE, queue_conf->socket);
        if (q->ag == NULL) {
                rte_bbdev_log(ERR,
                        "Failed to allocate queue memory for %s", name);
                goto free_q;
        }

        /* Allocate memory for code block temp buffer. */
        ret = snprintf(name, RTE_RING_NAMESIZE, RTE_STR(DRIVER_NAME)"_cb%u:%u",
                        dev->data->dev_id, q_id);
        if ((ret < 0) || (ret >= (int)RTE_RING_NAMESIZE)) {
                rte_bbdev_log(ERR,
                                "Creating queue name for device %u queue %u failed",
                                dev->data->dev_id, q_id);
                return -ENAMETOOLONG;
        }
        q->code_block = rte_zmalloc_socket(name,
                        RTE_BBDEV_MAX_CB_SIZE * sizeof(*q->code_block),
                        RTE_CACHE_LINE_SIZE, queue_conf->socket);
        if (q->code_block == NULL) {
                rte_bbdev_log(ERR,
                        "Failed to allocate queue memory for %s", name);
                goto free_q;
        }

        /* Allocate memory for Deinterleaver input. */
        ret = snprintf(name, RTE_RING_NAMESIZE,
                        RTE_STR(DRIVER_NAME)"_de_i%u:%u",
                        dev->data->dev_id, q_id);
        if ((ret < 0) || (ret >= (int)RTE_RING_NAMESIZE)) {
                rte_bbdev_log(ERR,
                                "Creating queue name for device %u queue %u failed",
                                dev->data->dev_id, q_id);
                return -ENAMETOOLONG;
        }
        q->deint_input = rte_zmalloc_socket(name,
                        DEINT_INPUT_BUF_SIZE * sizeof(*q->deint_input),
                        RTE_CACHE_LINE_SIZE, queue_conf->socket);
        if (q->deint_input == NULL) {
                rte_bbdev_log(ERR,
                        "Failed to allocate queue memory for %s", name);
                goto free_q;
        }

        /* Allocate memory for Deinterleaver output. */
        ret = snprintf(name, RTE_RING_NAMESIZE,
                        RTE_STR(DRIVER_NAME)"_de_o%u:%u",
                        dev->data->dev_id, q_id);
        if ((ret < 0) || (ret >= (int)RTE_RING_NAMESIZE)) {
                rte_bbdev_log(ERR,
                                "Creating queue name for device %u queue %u failed",
                                dev->data->dev_id, q_id);
                return -ENAMETOOLONG;
        }
        q->deint_output = rte_zmalloc_socket(NULL,
                        DEINT_OUTPUT_BUF_SIZE * sizeof(*q->deint_output),
                        RTE_CACHE_LINE_SIZE, queue_conf->socket);
        if (q->deint_output == NULL) {
                rte_bbdev_log(ERR,
                        "Failed to allocate queue memory for %s", name);
                goto free_q;
        }

        /* Allocate memory for Adapter output. */
        ret = snprintf(name, RTE_RING_NAMESIZE,
                        RTE_STR(DRIVER_NAME)"_ada_o%u:%u",
                        dev->data->dev_id, q_id);
        if ((ret < 0) || (ret >= (int)RTE_RING_NAMESIZE)) {
                rte_bbdev_log(ERR,
                                "Creating queue name for device %u queue %u failed",
                                dev->data->dev_id, q_id);
                return -ENAMETOOLONG;
        }
        q->adapter_output = rte_zmalloc_socket(NULL,
                        ADAPTER_OUTPUT_BUF_SIZE * sizeof(*q->adapter_output),
                        RTE_CACHE_LINE_SIZE, queue_conf->socket);
        if (q->adapter_output == NULL) {
                rte_bbdev_log(ERR,
                        "Failed to allocate queue memory for %s", name);
                goto free_q;
        }

        /* Create ring for packets awaiting to be dequeued. */
        ret = snprintf(name, RTE_RING_NAMESIZE, RTE_STR(DRIVER_NAME)"%u:%u",
                        dev->data->dev_id, q_id);
        if ((ret < 0) || (ret >= (int)RTE_RING_NAMESIZE)) {
                rte_bbdev_log(ERR,
                                "Creating queue name for device %u queue %u failed",
                                dev->data->dev_id, q_id);
                return -ENAMETOOLONG;
        }
        q->processed_pkts = rte_ring_create(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 for %s", name);
                goto free_q;
        }

        q->type = queue_conf->op_type;

        dev->data->queues[q_id].queue_private = q;
        rte_bbdev_log_debug("setup device queue %s", name);
        return 0;

free_q:
        rte_ring_free(q->processed_pkts);
        rte_free(q->enc_out);
        rte_free(q->enc_in);
        rte_free(q->ag);
        rte_free(q->code_block);
        rte_free(q->deint_input);
        rte_free(q->deint_output);
        rte_free(q->adapter_output);
        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
};

/* Checks if the encoder input buffer is correct.
 * Returns 0 if it's valid, -1 otherwise.
 */
static inline int
is_enc_input_valid(const uint16_t k, const int32_t k_idx,
                const uint16_t in_length)
{
        if (k_idx < 0) {
                rte_bbdev_log(ERR, "K Index is invalid");
                return -1;
        }

        if (in_length - (k >> 3) < 0) {
                rte_bbdev_log(ERR,
                                "Mismatch between input length (%u bytes) and K (%u bits)",
                                in_length, k);
                return -1;
        }

        if (k > RTE_BBDEV_MAX_CB_SIZE) {
                rte_bbdev_log(ERR, "CB size (%u) is too big, max: %d",
                                k, RTE_BBDEV_MAX_CB_SIZE);
                return -1;
        }

        return 0;
}

/* Checks if the decoder input buffer is correct.
 * Returns 0 if it's valid, -1 otherwise.
 */
static inline int
is_dec_input_valid(int32_t k_idx, int16_t kw, int16_t in_length)
{
        if (k_idx < 0) {
                rte_bbdev_log(ERR, "K index is invalid");
                return -1;
        }

        if (in_length - kw < 0) {
                rte_bbdev_log(ERR,
                                "Mismatch between input length (%u) and kw (%u)",
                                in_length, kw);
                return -1;
        }

        if (kw > RTE_BBDEV_MAX_KW) {
                rte_bbdev_log(ERR, "Input length (%u) is too big, max: %d",
                                kw, RTE_BBDEV_MAX_KW);
                return -1;
        }

        return 0;
}

static inline void
process_enc_cb(struct turbo_sw_queue *q, struct rte_bbdev_enc_op *op,
                uint8_t r, uint8_t c, uint16_t k, uint16_t ncb,
                uint32_t e, struct rte_mbuf *m_in, struct rte_mbuf *m_out,
                uint16_t in_offset, uint16_t out_offset, uint16_t total_left,
                struct rte_bbdev_stats *q_stats)
{
        int ret;
        int16_t k_idx;
        uint16_t m;
        uint8_t *in, *out0, *out1, *out2, *tmp_out, *rm_out;
        uint64_t first_3_bytes = 0;
        struct rte_bbdev_op_turbo_enc *enc = &op->turbo_enc;
        struct bblib_crc_request crc_req;
        struct bblib_crc_response crc_resp;
        struct bblib_turbo_encoder_request turbo_req;
        struct bblib_turbo_encoder_response turbo_resp;
        struct bblib_rate_match_dl_request rm_req;
        struct bblib_rate_match_dl_response rm_resp;
#ifdef RTE_BBDEV_OFFLOAD_COST
        uint64_t start_time;
#else
        RTE_SET_USED(q_stats);
#endif

        k_idx = compute_idx(k);
        in = rte_pktmbuf_mtod_offset(m_in, uint8_t *, in_offset);

        /* CRC24A (for TB) */
        if ((enc->op_flags & RTE_BBDEV_TURBO_CRC_24A_ATTACH) &&
                (enc->code_block_mode == 1)) {
                ret = is_enc_input_valid(k - 24, k_idx, total_left);
                if (ret != 0) {
                        op->status |= 1 << RTE_BBDEV_DATA_ERROR;
                        return;
                }
                crc_req.data = in;
                crc_req.len = k - 24;
                /* Check if there is a room for CRC bits if not use
                 * the temporary buffer.
                 */
                if (rte_pktmbuf_append(m_in, 3) == NULL) {
                        rte_memcpy(q->enc_in, in, (k - 24) >> 3);
                        in = q->enc_in;
                } else {
                        /* Store 3 first bytes of next CB as they will be
                         * overwritten by CRC bytes. If it is the last CB then
                         * there is no point to store 3 next bytes and this
                         * if..else branch will be omitted.
                         */
                        first_3_bytes = *((uint64_t *)&in[(k - 32) >> 3]);
                }

                crc_resp.data = in;
#ifdef RTE_BBDEV_OFFLOAD_COST
                start_time = rte_rdtsc_precise();
#endif
                bblib_lte_crc24a_gen(&crc_req, &crc_resp);
#ifdef RTE_BBDEV_OFFLOAD_COST
                q_stats->offload_time += rte_rdtsc_precise() - start_time;
#endif
        } else if (enc->op_flags & RTE_BBDEV_TURBO_CRC_24B_ATTACH) {
                /* CRC24B */
                ret = is_enc_input_valid(k - 24, k_idx, total_left);
                if (ret != 0) {
                        op->status |= 1 << RTE_BBDEV_DATA_ERROR;
                        return;
                }
                crc_req.data = in;
                crc_req.len = k - 24;
                /* Check if there is a room for CRC bits if this is the last
                 * CB in TB. If not use temporary buffer.
                 */
                if ((c - r == 1) && (rte_pktmbuf_append(m_in, 3) == NULL)) {
                        rte_memcpy(q->enc_in, in, (k - 24) >> 3);
                        in = q->enc_in;
                } else if (c - r > 1) {
                        /* Store 3 first bytes of next CB as they will be
                         * overwritten by CRC bytes. If it is the last CB then
                         * there is no point to store 3 next bytes and this
                         * if..else branch will be omitted.
                         */
                        first_3_bytes = *((uint64_t *)&in[(k - 32) >> 3]);
                }

                crc_resp.data = in;
#ifdef RTE_BBDEV_OFFLOAD_COST
                start_time = rte_rdtsc_precise();
#endif
                bblib_lte_crc24b_gen(&crc_req, &crc_resp);
#ifdef RTE_BBDEV_OFFLOAD_COST
                q_stats->offload_time += rte_rdtsc_precise() - start_time;
#endif
        } else {
                ret = is_enc_input_valid(k, k_idx, total_left);
                if (ret != 0) {
                        op->status |= 1 << RTE_BBDEV_DATA_ERROR;
                        return;
                }
        }

        /* Turbo encoder */

        /* Each bit layer output from turbo encoder is (k+4) bits long, i.e.
         * input length + 4 tail bits. That's (k/8) + 1 bytes after rounding up.
         * So dst_data's length should be 3*(k/8) + 3 bytes.
         * In Rate-matching bypass case outputs pointers passed to encoder
         * (out0, out1 and out2) can directly point to addresses of output from
         * turbo_enc entity.
         */
        if (enc->op_flags & RTE_BBDEV_TURBO_RATE_MATCH) {
                out0 = q->enc_out;
                out1 = RTE_PTR_ADD(out0, (k >> 3) + 1);
                out2 = RTE_PTR_ADD(out1, (k >> 3) + 1);
        } else {
                out0 = (uint8_t *)rte_pktmbuf_append(m_out, (k >> 3) * 3 + 2);
                if (out0 == NULL) {
                        op->status |= 1 << RTE_BBDEV_DATA_ERROR;
                        rte_bbdev_log(ERR,
                                        "Too little space in output mbuf");
                        return;
                }
                enc->output.length += (k >> 3) * 3 + 2;
                /* rte_bbdev_op_data.offset can be different than the
                 * offset of the appended bytes
                 */
                out0 = rte_pktmbuf_mtod_offset(m_out, uint8_t *, out_offset);
                out1 = rte_pktmbuf_mtod_offset(m_out, uint8_t *,
                                out_offset + (k >> 3) + 1);
                out2 = rte_pktmbuf_mtod_offset(m_out, uint8_t *,
                                out_offset + 2 * ((k >> 3) + 1));
        }

        turbo_req.case_id = k_idx;
        turbo_req.input_win = in;
        turbo_req.length = k >> 3;
        turbo_resp.output_win_0 = out0;
        turbo_resp.output_win_1 = out1;
        turbo_resp.output_win_2 = out2;

#ifdef RTE_BBDEV_OFFLOAD_COST
        start_time = rte_rdtsc_precise();
#endif

        if (bblib_turbo_encoder(&turbo_req, &turbo_resp) != 0) {
                op->status |= 1 << RTE_BBDEV_DRV_ERROR;
                rte_bbdev_log(ERR, "Turbo Encoder failed");
                return;
        }

#ifdef RTE_BBDEV_OFFLOAD_COST
        q_stats->offload_time += rte_rdtsc_precise() - start_time;
#endif

        /* Restore 3 first bytes of next CB if they were overwritten by CRC*/
        if (first_3_bytes != 0)
                *((uint64_t *)&in[(k - 32) >> 3]) = first_3_bytes;

        /* Rate-matching */
        if (enc->op_flags & RTE_BBDEV_TURBO_RATE_MATCH) {
                uint8_t mask_id;
                /* Integer round up division by 8 */
                uint16_t out_len = (e + 7) >> 3;
                /* The mask array is indexed using E%8. E is an even number so
                 * there are only 4 possible values.
                 */
                const uint8_t mask_out[] = {0xFF, 0xC0, 0xF0, 0xFC};

                /* get output data starting address */
                rm_out = (uint8_t *)rte_pktmbuf_append(m_out, out_len);
                if (rm_out == NULL) {
                        op->status |= 1 << RTE_BBDEV_DATA_ERROR;
                        rte_bbdev_log(ERR,
                                        "Too little space in output mbuf");
                        return;
                }
                /* rte_bbdev_op_data.offset can be different than the offset
                 * of the appended bytes
                 */
                rm_out = rte_pktmbuf_mtod_offset(m_out, uint8_t *, out_offset);

                /* index of current code block */
                rm_req.r = r;
                /* total number of code block */
                rm_req.C = c;
                /* For DL - 1, UL - 0 */
                rm_req.direction = 1;
                /* According to 3ggp 36.212 Spec 5.1.4.1.2 section Nsoft, KMIMO
                 * and MDL_HARQ are used for Ncb calculation. As Ncb is already
                 * known we can adjust those parameters
                 */
                rm_req.Nsoft = ncb * rm_req.C;
                rm_req.KMIMO = 1;
                rm_req.MDL_HARQ = 1;
                /* According to 3ggp 36.212 Spec 5.1.4.1.2 section Nl, Qm and G
                 * are used for E calculation. As E is already known we can
                 * adjust those parameters
                 */
                rm_req.NL = e;
                rm_req.Qm = 1;
                rm_req.G = rm_req.NL * rm_req.Qm * rm_req.C;

                rm_req.rvidx = enc->rv_index;
                rm_req.Kidx = k_idx - 1;
                rm_req.nLen = k + 4;
                rm_req.tin0 = out0;
                rm_req.tin1 = out1;
                rm_req.tin2 = out2;
                rm_resp.output = rm_out;
                rm_resp.OutputLen = out_len;
                if (enc->op_flags & RTE_BBDEV_TURBO_RV_INDEX_BYPASS)
                        rm_req.bypass_rvidx = 1;
                else
                        rm_req.bypass_rvidx = 0;

#ifdef RTE_BBDEV_OFFLOAD_COST
                start_time = rte_rdtsc_precise();
#endif

                if (bblib_rate_match_dl(&rm_req, &rm_resp) != 0) {
                        op->status |= 1 << RTE_BBDEV_DRV_ERROR;
                        rte_bbdev_log(ERR, "Rate matching failed");
                        return;
                }

                /* SW fills an entire last byte even if E%8 != 0. Clear the
                 * superfluous data bits for consistency with HW device.
                 */
                mask_id = (e & 7) >> 1;
                rm_out[out_len - 1] &= mask_out[mask_id];

#ifdef RTE_BBDEV_OFFLOAD_COST
                q_stats->offload_time += rte_rdtsc_precise() - start_time;
#endif

                enc->output.length += rm_resp.OutputLen;
        } else {
                /* Rate matching is bypassed */

                /* Completing last byte of out0 (where 4 tail bits are stored)
                 * by moving first 4 bits from out1
                 */
                tmp_out = (uint8_t *) --out1;
                *tmp_out = *tmp_out | ((*(tmp_out + 1) & 0xF0) >> 4);
                tmp_out++;
                /* Shifting out1 data by 4 bits to the left */
                for (m = 0; m < k >> 3; ++m) {
                        uint8_t *first = tmp_out;
                        uint8_t second = *(tmp_out + 1);
                        *first = (*first << 4) | ((second & 0xF0) >> 4);
                        tmp_out++;
                }
                /* Shifting out2 data by 8 bits to the left */
                for (m = 0; m < (k >> 3) + 1; ++m) {
                        *tmp_out = *(tmp_out + 1);
                        tmp_out++;
                }
                *tmp_out = 0;
        }
}

static inline void
enqueue_enc_one_op(struct turbo_sw_queue *q, struct rte_bbdev_enc_op *op,
                struct rte_bbdev_stats *queue_stats)
{
        uint8_t c, r, crc24_bits = 0;
        uint16_t k, ncb;
        uint32_t e;
        struct rte_bbdev_op_turbo_enc *enc = &op->turbo_enc;
        uint16_t in_offset = enc->input.offset;
        uint16_t out_offset = enc->output.offset;
        struct rte_mbuf *m_in = enc->input.data;
        struct rte_mbuf *m_out = enc->output.data;
        uint16_t total_left = enc->input.length;

        /* Clear op status */
        op->status = 0;

        if (total_left > RTE_BBDEV_MAX_TB_SIZE >> 3) {
                rte_bbdev_log(ERR, "TB size (%u) is too big, max: %d",
                                total_left, RTE_BBDEV_MAX_TB_SIZE);
                op->status = 1 << RTE_BBDEV_DATA_ERROR;
                return;
        }

        if (m_in == NULL || m_out == NULL) {
                rte_bbdev_log(ERR, "Invalid mbuf pointer");
                op->status = 1 << RTE_BBDEV_DATA_ERROR;
                return;
        }

        if ((enc->op_flags & RTE_BBDEV_TURBO_CRC_24B_ATTACH) ||
                (enc->op_flags & RTE_BBDEV_TURBO_CRC_24A_ATTACH))
                crc24_bits = 24;

        if (enc->code_block_mode == 0) { /* For Transport Block mode */
                c = enc->tb_params.c;
                r = enc->tb_params.r;
        } else {/* For Code Block mode */
                c = 1;
                r = 0;
        }

        while (total_left > 0 && r < c) {
                if (enc->code_block_mode == 0) {
                        k = (r < enc->tb_params.c_neg) ?
                                enc->tb_params.k_neg : enc->tb_params.k_pos;
                        ncb = (r < enc->tb_params.c_neg) ?
                                enc->tb_params.ncb_neg : enc->tb_params.ncb_pos;
                        e = (r < enc->tb_params.cab) ?
                                enc->tb_params.ea : enc->tb_params.eb;
                } else {
                        k = enc->cb_params.k;
                        ncb = enc->cb_params.ncb;
                        e = enc->cb_params.e;
                }

                process_enc_cb(q, op, r, c, k, ncb, e, m_in,
                                m_out, in_offset, out_offset, total_left,
                                queue_stats);
                /* Update total_left */
                total_left -= (k - crc24_bits) >> 3;
                /* Update offsets for next CBs (if exist) */
                in_offset += (k - crc24_bits) >> 3;
                if (enc->op_flags & RTE_BBDEV_TURBO_RATE_MATCH)
                        out_offset += e >> 3;
                else
                        out_offset += (k >> 3) * 3 + 2;
                r++;
        }

        /* check if all input data was processed */
        if (total_left != 0) {
                op->status |= 1 << RTE_BBDEV_DATA_ERROR;
                rte_bbdev_log(ERR,
                                "Mismatch between mbuf length and included CBs sizes");
        }
}

static inline uint16_t
enqueue_enc_all_ops(struct turbo_sw_queue *q, struct rte_bbdev_enc_op **ops,
                uint16_t nb_ops, struct rte_bbdev_stats *queue_stats)
{
        uint16_t i;
#ifdef RTE_BBDEV_OFFLOAD_COST
        queue_stats->offload_time = 0;
#endif

        for (i = 0; i < nb_ops; ++i)
                enqueue_enc_one_op(q, ops[i], queue_stats);

        return rte_ring_enqueue_burst(q->processed_pkts, (void **)ops, nb_ops,
                        NULL);
}

/* Remove the padding bytes from a cyclic buffer.
 * The input buffer is a data stream wk as described in 3GPP TS 36.212 section
 * 5.1.4.1.2 starting from w0 and with length Ncb bytes.
 * The output buffer is a data stream wk with pruned padding bytes. It's length
 * is 3*D bytes and the order of non-padding bytes is preserved.
 */
static inline void
remove_nulls_from_circular_buf(const uint8_t *in, uint8_t *out, uint16_t k,
                uint16_t ncb)
{
        uint32_t in_idx, out_idx, c_idx;
        const uint32_t d = k + 4;
        const uint32_t kw = (ncb / 3);
        const uint32_t nd = kw - d;
        const uint32_t r_subblock = kw / RTE_BBDEV_C_SUBBLOCK;
        /* Inter-column permutation pattern */
        const uint32_t P[RTE_BBDEV_C_SUBBLOCK] = {0, 16, 8, 24, 4, 20, 12, 28,
                        2, 18, 10, 26, 6, 22, 14, 30, 1, 17, 9, 25, 5, 21, 13,
                        29, 3, 19, 11, 27, 7, 23, 15, 31};
        in_idx = 0;
        out_idx = 0;

        /* The padding bytes are at the first Nd positions in the first row. */
        for (c_idx = 0; in_idx < kw; in_idx += r_subblock, ++c_idx) {
                if (P[c_idx] < nd) {
                        rte_memcpy(&out[out_idx], &in[in_idx + 1],
                                        r_subblock - 1);
                        out_idx += r_subblock - 1;
                } else {
                        rte_memcpy(&out[out_idx], &in[in_idx], r_subblock);
                        out_idx += r_subblock;
                }
        }

        /* First and second parity bits sub-blocks are interlaced. */
        for (c_idx = 0; in_idx < ncb - 2 * r_subblock;
                        in_idx += 2 * r_subblock, ++c_idx) {
                uint32_t second_block_c_idx = P[c_idx];
                uint32_t third_block_c_idx = P[c_idx] + 1;

                if (second_block_c_idx < nd && third_block_c_idx < nd) {
                        rte_memcpy(&out[out_idx], &in[in_idx + 2],
                                        2 * r_subblock - 2);
                        out_idx += 2 * r_subblock - 2;
                } else if (second_block_c_idx >= nd &&
                                third_block_c_idx >= nd) {
                        rte_memcpy(&out[out_idx], &in[in_idx], 2 * r_subblock);
                        out_idx += 2 * r_subblock;
                } else if (second_block_c_idx < nd) {
                        out[out_idx++] = in[in_idx];
                        rte_memcpy(&out[out_idx], &in[in_idx + 2],
                                        2 * r_subblock - 2);
                        out_idx += 2 * r_subblock - 2;
                } else {
                        rte_memcpy(&out[out_idx], &in[in_idx + 1],
                                        2 * r_subblock - 1);
                        out_idx += 2 * r_subblock - 1;
                }
        }

        /* Last interlaced row is different - its last byte is the only padding
         * byte. We can have from 4 up to 28 padding bytes (Nd) per sub-block.
         * After interlacing the 1st and 2nd parity sub-blocks we can have 0, 1
         * or 2 padding bytes each time we make a step of 2 * R_SUBBLOCK bytes
         * (moving to another column). 2nd parity sub-block uses the same
         * inter-column permutation pattern as the systematic and 1st parity
         * sub-blocks but it adds '1' to the resulting index and calculates the
         * modulus of the result and Kw. Last column is mapped to itself (id 31)
         * so the first byte taken from the 2nd parity sub-block will be the
         * 32nd (31+1) byte, then 64th etc. (step is C_SUBBLOCK == 32) and the
         * last byte will be the first byte from the sub-block:
         * (32 + 32 * (R_SUBBLOCK-1)) % Kw == Kw % Kw == 0. Nd can't  be smaller
         * than 4 so we know that bytes with ids 0, 1, 2 and 3 must be the
         * padding bytes. The bytes from the 1st parity sub-block are the bytes
         * from the 31st column - Nd can't be greater than 28 so we are sure
         * that there are no padding bytes in 31st column.
         */
        rte_memcpy(&out[out_idx], &in[in_idx], 2 * r_subblock - 1);
}

static inline void
move_padding_bytes(const uint8_t *in, uint8_t *out, uint16_t k,
                uint16_t ncb)
{
        uint16_t d = k + 4;
        uint16_t kpi = ncb / 3;
        uint16_t nd = kpi - d;

        rte_memcpy(&out[nd], in, d);
        rte_memcpy(&out[nd + kpi + 64], &in[kpi], d);
        rte_memcpy(&out[(nd - 1) + 2 * (kpi + 64)], &in[2 * kpi], d);
}

static inline void
process_dec_cb(struct turbo_sw_queue *q, struct rte_bbdev_dec_op *op,
                uint8_t c, uint16_t k, uint16_t kw, struct rte_mbuf *m_in,
                struct rte_mbuf *m_out, uint16_t in_offset, uint16_t out_offset,
                bool check_crc_24b, uint16_t crc24_overlap, uint16_t total_left)
{
        int ret;
        int32_t k_idx;
        int32_t iter_cnt;
        uint8_t *in, *out, *adapter_input;
        int32_t ncb, ncb_without_null;
        struct bblib_turbo_adapter_ul_response adapter_resp;
        struct bblib_turbo_adapter_ul_request adapter_req;
        struct bblib_turbo_decoder_request turbo_req;
        struct bblib_turbo_decoder_response turbo_resp;
        struct rte_bbdev_op_turbo_dec *dec = &op->turbo_dec;

        k_idx = compute_idx(k);

        ret = is_dec_input_valid(k_idx, kw, total_left);
        if (ret != 0) {
                op->status |= 1 << RTE_BBDEV_DATA_ERROR;
                return;
        }

        in = rte_pktmbuf_mtod_offset(m_in, uint8_t *, in_offset);
        ncb = kw;
        ncb_without_null = (k + 4) * 3;

        if (check_bit(dec->op_flags, RTE_BBDEV_TURBO_SUBBLOCK_DEINTERLEAVE)) {
                struct bblib_deinterleave_ul_request deint_req;
                struct bblib_deinterleave_ul_response deint_resp;

                /* SW decoder accepts only a circular buffer without NULL bytes
                 * so the input needs to be converted.
                 */
                remove_nulls_from_circular_buf(in, q->deint_input, k, ncb);

                deint_req.pharqbuffer = q->deint_input;
                deint_req.ncb = ncb_without_null;
                deint_resp.pinteleavebuffer = q->deint_output;
                bblib_deinterleave_ul(&deint_req, &deint_resp);
        } else
                move_padding_bytes(in, q->deint_output, k, ncb);

        adapter_input = q->deint_output;

        if (dec->op_flags & RTE_BBDEV_TURBO_POS_LLR_1_BIT_IN)
                adapter_req.isinverted = 1;
        else if (dec->op_flags & RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN)
                adapter_req.isinverted = 0;
        else {
                op->status |= 1 << RTE_BBDEV_DRV_ERROR;
                rte_bbdev_log(ERR, "LLR format wasn't specified");
                return;
        }

        adapter_req.ncb = ncb_without_null;
        adapter_req.pinteleavebuffer = adapter_input;
        adapter_resp.pharqout = q->adapter_output;
        bblib_turbo_adapter_ul(&adapter_req, &adapter_resp);

        out = (uint8_t *)rte_pktmbuf_append(m_out, ((k - crc24_overlap) >> 3));
        if (out == NULL) {
                op->status |= 1 << RTE_BBDEV_DATA_ERROR;
                rte_bbdev_log(ERR, "Too little space in output mbuf");
                return;
        }
        /* rte_bbdev_op_data.offset can be different than the offset of the
         * appended bytes
         */
        out = rte_pktmbuf_mtod_offset(m_out, uint8_t *, out_offset);
        if (check_crc_24b)
                turbo_req.c = c + 1;
        else
                turbo_req.c = c;
        turbo_req.input = (int8_t *)q->adapter_output;
        turbo_req.k = k;
        turbo_req.k_idx = k_idx;
        turbo_req.max_iter_num = dec->iter_max;
        turbo_req.early_term_disable = !check_bit(dec->op_flags,
                        RTE_BBDEV_TURBO_EARLY_TERMINATION);
        turbo_resp.ag_buf = q->ag;
        turbo_resp.cb_buf = q->code_block;
        turbo_resp.output = out;
        iter_cnt = bblib_turbo_decoder(&turbo_req, &turbo_resp);
        dec->hard_output.length += (k >> 3);

        if (iter_cnt > 0) {
                /* Temporary solution for returned iter_count from SDK */
                iter_cnt = (iter_cnt - 1) / 2;
                dec->iter_count = RTE_MAX(iter_cnt, dec->iter_count);
        } else {
                op->status |= 1 << RTE_BBDEV_DATA_ERROR;
                rte_bbdev_log(ERR, "Turbo Decoder failed");
                return;
        }
}

static inline void
enqueue_dec_one_op(struct turbo_sw_queue *q, struct rte_bbdev_dec_op *op)
{
        uint8_t c, r = 0;
        uint16_t kw, k = 0;
        uint16_t crc24_overlap = 0;
        struct rte_bbdev_op_turbo_dec *dec = &op->turbo_dec;
        struct rte_mbuf *m_in = dec->input.data;
        struct rte_mbuf *m_out = dec->hard_output.data;
        uint16_t in_offset = dec->input.offset;
        uint16_t total_left = dec->input.length;
        uint16_t out_offset = dec->hard_output.offset;

        /* Clear op status */
        op->status = 0;

        if (m_in == NULL || m_out == NULL) {
                rte_bbdev_log(ERR, "Invalid mbuf pointer");
                op->status = 1 << RTE_BBDEV_DATA_ERROR;
                return;
        }

        if (dec->code_block_mode == 0) { /* For Transport Block mode */
                c = dec->tb_params.c;
        } else { /* For Code Block mode */
                k = dec->cb_params.k;
                c = 1;
        }

        if ((c > 1) && !check_bit(dec->op_flags,
                RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP))
                crc24_overlap = 24;

        while (total_left > 0) {
                if (dec->code_block_mode == 0)
                        k = (r < dec->tb_params.c_neg) ?
                                dec->tb_params.k_neg : dec->tb_params.k_pos;

                /* Calculates circular buffer size (Kw).
                 * According to 3gpp 36.212 section 5.1.4.2
                 *   Kw = 3 * Kpi,
                 * where:
                 *   Kpi = nCol * nRow
                 * where nCol is 32 and nRow can be calculated from:
                 *   D =< nCol * nRow
                 * where D is the size of each output from turbo encoder block
                 * (k + 4).
                 */
                kw = RTE_ALIGN_CEIL(k + 4, RTE_BBDEV_C_SUBBLOCK) * 3;

                process_dec_cb(q, op, c, k, kw, m_in, m_out, in_offset,
                                out_offset, check_bit(dec->op_flags,
                                RTE_BBDEV_TURBO_CRC_TYPE_24B), crc24_overlap,
                                total_left);
                /* To keep CRC24 attached to end of Code block, use
                 * RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP flag as it
                 * removed by default once verified.
                 */

                /* Update total_left */
                total_left -= kw;
                /* Update offsets for next CBs (if exist) */
                in_offset += kw;
                out_offset += ((k - crc24_overlap) >> 3);
                r++;
        }
        if (total_left != 0) {
                op->status |= 1 << RTE_BBDEV_DATA_ERROR;
                rte_bbdev_log(ERR,
                                "Mismatch between mbuf length and included Circular buffer sizes");
        }
}

static inline uint16_t
enqueue_dec_all_ops(struct turbo_sw_queue *q, struct rte_bbdev_dec_op **ops,
                uint16_t nb_ops)
{
        uint16_t i;

        for (i = 0; i < nb_ops; ++i)
                enqueue_dec_one_op(q, ops[i]);

        return rte_ring_enqueue_burst(q->processed_pkts, (void **)ops, nb_ops,
                        NULL);
}

/* Enqueue burst */
static uint16_t
enqueue_enc_ops(struct rte_bbdev_queue_data *q_data,
                struct rte_bbdev_enc_op **ops, uint16_t nb_ops)
{
        void *queue = q_data->queue_private;
        struct turbo_sw_queue *q = queue;
        uint16_t nb_enqueued = 0;

        nb_enqueued = enqueue_enc_all_ops(q, ops, nb_ops, &q_data->queue_stats);

        q_data->queue_stats.enqueue_err_count += nb_ops - nb_enqueued;
        q_data->queue_stats.enqueued_count += nb_enqueued;

        return nb_enqueued;
}

/* Enqueue burst */
static uint16_t
enqueue_dec_ops(struct rte_bbdev_queue_data *q_data,
                 struct rte_bbdev_dec_op **ops, uint16_t nb_ops)
{
        void *queue = q_data->queue_private;
        struct turbo_sw_queue *q = queue;
        uint16_t nb_enqueued = 0;

        nb_enqueued = enqueue_dec_all_ops(q, ops, nb_ops);

        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 turbo_sw_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 turbo_sw_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_turbo_sw_params(struct turbo_sw_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, turbo_sw_valid_params);
                if (kvlist == NULL)
                        return -EFAULT;

                ret = rte_kvargs_process(kvlist, turbo_sw_valid_params[0],
                                        &parse_u16_arg, &params->queues_num);
                if (ret < 0)
                        goto exit;

                ret = rte_kvargs_process(kvlist, turbo_sw_valid_params[1],
                                        &parse_u16_arg, &params->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
turbo_sw_bbdev_create(struct rte_vdev_device *vdev,
                struct turbo_sw_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
turbo_sw_bbdev_probe(struct rte_vdev_device *vdev)
{
        struct turbo_sw_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_turbo_sw_params(&init_params, input_args);

        rte_bbdev_log_debug(
                        "Initialising %s on NUMA node %d with max queues: %d\n",
                        name, init_params.socket_id, init_params.queues_num);

        return turbo_sw_bbdev_create(vdev, &init_params);
}

/* Uninitialise device */
static int
turbo_sw_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_turbo_sw_pmd_drv = {
        .probe = turbo_sw_bbdev_probe,
        .remove = turbo_sw_bbdev_remove
};

RTE_PMD_REGISTER_VDEV(DRIVER_NAME, bbdev_turbo_sw_pmd_drv);
RTE_PMD_REGISTER_PARAM_STRING(DRIVER_NAME,
        TURBO_SW_MAX_NB_QUEUES_ARG"=<int> "
        TURBO_SW_SOCKET_ID_ARG"=<int>");
RTE_PMD_REGISTER_ALIAS(DRIVER_NAME, turbo_sw);

RTE_INIT(turbo_sw_bbdev_init_log)
{
        bbdev_turbo_sw_logtype = rte_log_register("pmd.bb.turbo_sw");
        if (bbdev_turbo_sw_logtype >= 0)
                rte_log_set_level(bbdev_turbo_sw_logtype, RTE_LOG_NOTICE);
}