Re: [dpdk-dev] [PATCH v3 05/11] baseband/acc100: add LDPC processing functions

["Chautru, Nicolas" <nicolas.chautru@intel.com>]

Hi Dave, 
This is assuming 6 bits LLR compression packing (ie. first 2 MSB dropped). Similar to HARQ compression.
Let me know if unclear, I can clarify further in documentation if not explicit enough.
Thanks
Nic

> -----Original Message-----
> From: Dave Burley <dave.burley@accelercomm.com>
> Sent: Thursday, August 20, 2020 7:39 AM
> To: Chautru, Nicolas <nicolas.chautru@intel.com>; dev@dpdk.org
> Cc: Richardson, Bruce <bruce.richardson@intel.com>
> Subject: Re: [dpdk-dev] [PATCH v3 05/11] baseband/acc100: add LDPC
> processing functions
> 
> Hi Nic,
> 
> As you've now specified the use of RTE_BBDEV_LDPC_LLR_COMPRESSION for
> this PMB, please could you confirm what the packed format of the LLRs in
> memory looks like?
> 
> Best Regards
> 
> Dave Burley
> 
> 
> From: dev <dev-bounces@dpdk.org> on behalf of Nicolas Chautru
> <nicolas.chautru@intel.com>
> Sent: 19 August 2020 01:25
> To: dev@dpdk.org <dev@dpdk.org>; akhil.goyal@nxp.com
> <akhil.goyal@nxp.com>
> Cc: bruce.richardson@intel.com <bruce.richardson@intel.com>; Nicolas
> Chautru <nicolas.chautru@intel.com>
> Subject: [dpdk-dev] [PATCH v3 05/11] baseband/acc100: add LDPC processing
> functions
> 
> Adding LDPC decode and encode processing operations
> 
> Signed-off-by: Nicolas Chautru <nicolas.chautru@intel.com>
> ---
>  drivers/baseband/acc100/rte_acc100_pmd.c | 1625
> +++++++++++++++++++++++++++++-
>  drivers/baseband/acc100/rte_acc100_pmd.h |    3 +
>  2 files changed, 1626 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/baseband/acc100/rte_acc100_pmd.c
> b/drivers/baseband/acc100/rte_acc100_pmd.c
> index 7a21c57..5f32813 100644
> --- a/drivers/baseband/acc100/rte_acc100_pmd.c
> +++ b/drivers/baseband/acc100/rte_acc100_pmd.c
> @@ -15,6 +15,9 @@
>  #include <rte_hexdump.h>
>  #include <rte_pci.h>
>  #include <rte_bus_pci.h>
> +#ifdef RTE_BBDEV_OFFLOAD_COST
> +#include <rte_cycles.h>
> +#endif
> 
>  #include <rte_bbdev.h>
>  #include <rte_bbdev_pmd.h>
> @@ -449,7 +452,6 @@
>          return 0;
>  }
> 
> -
>  /**
>   * Report a ACC100 queue index which is free
>   * Return 0 to 16k for a valid queue_idx or -1 when no queue is available
> @@ -634,6 +636,46 @@
>          struct acc100_device *d = dev->data->dev_private;
> 
>          static const struct rte_bbdev_op_cap bbdev_capabilities[] = {
> +               {
> +                       .type   = RTE_BBDEV_OP_LDPC_ENC,
> +                       .cap.ldpc_enc = {
> +                               .capability_flags =
> +                                       RTE_BBDEV_LDPC_RATE_MATCH |
> +                                       RTE_BBDEV_LDPC_CRC_24B_ATTACH |
> +                                       RTE_BBDEV_LDPC_INTERLEAVER_BYPASS,
> +                               .num_buffers_src =
> +                                               RTE_BBDEV_LDPC_MAX_CODE_BLOCKS,
> +                               .num_buffers_dst =
> +                                               RTE_BBDEV_LDPC_MAX_CODE_BLOCKS,
> +                       }
> +               },
> +               {
> +                       .type   = RTE_BBDEV_OP_LDPC_DEC,
> +                       .cap.ldpc_dec = {
> +                       .capability_flags =
> +                               RTE_BBDEV_LDPC_CRC_TYPE_24B_CHECK |
> +                               RTE_BBDEV_LDPC_CRC_TYPE_24B_DROP |
> +                               RTE_BBDEV_LDPC_HQ_COMBINE_IN_ENABLE |
> +                               RTE_BBDEV_LDPC_HQ_COMBINE_OUT_ENABLE |
> +#ifdef ACC100_EXT_MEM
> +                               RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_IN_ENABL
> E |
> +                               RTE_BBDEV_LDPC_INTERNAL_HARQ_MEMORY_OUT_ENA
> BLE |
> +#endif
> +                               RTE_BBDEV_LDPC_ITERATION_STOP_ENABLE |
> +                               RTE_BBDEV_LDPC_DEINTERLEAVER_BYPASS |
> +                               RTE_BBDEV_LDPC_DECODE_BYPASS |
> +                               RTE_BBDEV_LDPC_DEC_SCATTER_GATHER |
> +                               RTE_BBDEV_LDPC_HARQ_6BIT_COMPRESSION |
> +                               RTE_BBDEV_LDPC_LLR_COMPRESSION,
> +                       .llr_size = 8,
> +                       .llr_decimals = 1,
> +                       .num_buffers_src =
> +                                       RTE_BBDEV_LDPC_MAX_CODE_BLOCKS,
> +                       .num_buffers_hard_out =
> +                                       RTE_BBDEV_LDPC_MAX_CODE_BLOCKS,
> +                       .num_buffers_soft_out = 0,
> +                       }
> +               },
>                  RTE_BBDEV_END_OF_CAPABILITIES_LIST()
>          };
> 
> @@ -669,9 +711,14 @@
>          dev_info->cpu_flag_reqs = NULL;
>          dev_info->min_alignment = 64;
>          dev_info->capabilities = bbdev_capabilities;
> +#ifdef ACC100_EXT_MEM
>          dev_info->harq_buffer_size = d->ddr_size;
> +#else
> +       dev_info->harq_buffer_size = 0;
> +#endif
>  }
> 
> +
>  static const struct rte_bbdev_ops acc100_bbdev_ops = {
>          .setup_queues = acc100_setup_queues,
>          .close = acc100_dev_close,
> @@ -696,6 +743,1577 @@
>          {.device_id = 0},
>  };
> 
> +/* Read flag value 0/1 from bitmap */
> +static inline bool
> +check_bit(uint32_t bitmap, uint32_t bitmask)
> +{
> +       return bitmap & bitmask;
> +}
> +
> +static inline char *
> +mbuf_append(struct rte_mbuf *m_head, struct rte_mbuf *m, uint16_t len)
> +{
> +       if (unlikely(len > rte_pktmbuf_tailroom(m)))
> +               return NULL;
> +
> +       char *tail = (char *)m->buf_addr + m->data_off + m->data_len;
> +       m->data_len = (uint16_t)(m->data_len + len);
> +       m_head->pkt_len  = (m_head->pkt_len + len);
> +       return tail;
> +}
> +
> +/* Compute value of k0.
> + * Based on 3GPP 38.212 Table 5.4.2.1-2
> + * Starting position of different redundancy versions, k0
> + */
> +static inline uint16_t
> +get_k0(uint16_t n_cb, uint16_t z_c, uint8_t bg, uint8_t rv_index)
> +{
> +       if (rv_index == 0)
> +               return 0;
> +       uint16_t n = (bg == 1 ? N_ZC_1 : N_ZC_2) * z_c;
> +       if (n_cb == n) {
> +               if (rv_index == 1)
> +                       return (bg == 1 ? K0_1_1 : K0_1_2) * z_c;
> +               else if (rv_index == 2)
> +                       return (bg == 1 ? K0_2_1 : K0_2_2) * z_c;
> +               else
> +                       return (bg == 1 ? K0_3_1 : K0_3_2) * z_c;
> +       }
> +       /* LBRM case - includes a division by N */
> +       if (rv_index == 1)
> +               return (((bg == 1 ? K0_1_1 : K0_1_2) * n_cb)
> +                               / n) * z_c;
> +       else if (rv_index == 2)
> +               return (((bg == 1 ? K0_2_1 : K0_2_2) * n_cb)
> +                               / n) * z_c;
> +       else
> +               return (((bg == 1 ? K0_3_1 : K0_3_2) * n_cb)
> +                               / n) * z_c;
> +}
> +
> +/* Fill in a frame control word for LDPC encoding. */
> +static inline void
> +acc100_fcw_le_fill(const struct rte_bbdev_enc_op *op,
> +               struct acc100_fcw_le *fcw, int num_cb)
> +{
> +       fcw->qm = op->ldpc_enc.q_m;
> +       fcw->nfiller = op->ldpc_enc.n_filler;
> +       fcw->BG = (op->ldpc_enc.basegraph - 1);
> +       fcw->Zc = op->ldpc_enc.z_c;
> +       fcw->ncb = op->ldpc_enc.n_cb;
> +       fcw->k0 = get_k0(fcw->ncb, fcw->Zc, op->ldpc_enc.basegraph,
> +                       op->ldpc_enc.rv_index);
> +       fcw->rm_e = op->ldpc_enc.cb_params.e;
> +       fcw->crc_select = check_bit(op->ldpc_enc.op_flags,
> +                       RTE_BBDEV_LDPC_CRC_24B_ATTACH);
> +       fcw->bypass_intlv = check_bit(op->ldpc_enc.op_flags,
> +                       RTE_BBDEV_LDPC_INTERLEAVER_BYPASS);
> +       fcw->mcb_count = num_cb;
> +}
> +
> +/* Fill in a frame control word for LDPC decoding. */
> +static inline void
> +acc100_fcw_ld_fill(const struct rte_bbdev_dec_op *op, struct acc100_fcw_ld
> *fcw,
> +               union acc100_harq_layout_data *harq_layout)
> +{
> +       uint16_t harq_out_length, harq_in_length, ncb_p, k0_p, parity_offset;
> +       uint16_t harq_index;
> +       uint32_t l;
> +       bool harq_prun = false;
> +
> +       fcw->qm = op->ldpc_dec.q_m;
> +       fcw->nfiller = op->ldpc_dec.n_filler;
> +       fcw->BG = (op->ldpc_dec.basegraph - 1);
> +       fcw->Zc = op->ldpc_dec.z_c;
> +       fcw->ncb = op->ldpc_dec.n_cb;
> +       fcw->k0 = get_k0(fcw->ncb, fcw->Zc, op->ldpc_dec.basegraph,
> +                       op->ldpc_dec.rv_index);
> +       if (op->ldpc_dec.code_block_mode == 1)
> +               fcw->rm_e = op->ldpc_dec.cb_params.e;
> +       else
> +               fcw->rm_e = (op->ldpc_dec.tb_params.r <
> +                               op->ldpc_dec.tb_params.cab) ?
> +                                               op->ldpc_dec.tb_params.ea :
> +                                               op->ldpc_dec.tb_params.eb;
> +
> +       fcw->hcin_en = check_bit(op->ldpc_dec.op_flags,
> +                       RTE_BBDEV_LDPC_HQ_COMBINE_IN_ENABLE);
> +       fcw->hcout_en = check_bit(op->ldpc_dec.op_flags,
> +                       RTE_BBDEV_LDPC_HQ_COMBINE_OUT_ENABLE);
> +       fcw->crc_select = check_bit(op->ldpc_dec.op_flags,
> +                       RTE_BBDEV_LDPC_CRC_TYPE_24B_CHECK);
> +       fcw->bypass_dec = check_bit(op->ldpc_dec.op_flags,
> +                       RTE_BBDEV_LDPC_DECODE_BYPASS);
> +       fcw->bypass_intlv = check_bit(op->ldpc_dec.op_flags,
> +                       RTE_BBDEV_LDPC_DEINTERLEAVER_BYPASS);
> +       if (op->ldpc_dec.q_m == 1) {
> +               fcw->bypass_intlv = 1;
> +               fcw->qm = 2;
> +       }
> +       fcw->hcin_decomp_mode = check_bit(op->ldpc_dec.op_flags,
> +                       RTE_BBDEV_LDPC_HARQ_6BIT_COMPRESSION);
> +       fcw->hcout_comp_mode = check_bit(op->ldpc_dec.op_flags,
> +                       RTE_BBDEV_LDPC_HARQ_6BIT_COMPRESSION);
> +       fcw->llr_pack_mode = check_bit(op->ldpc_dec.op_flags,
> +                       RTE_BBDEV_LDPC_LLR_COMPRESSION);
> +       harq_index = op->ldpc_dec.harq_combined_output.offset /
> +                       ACC100_HARQ_OFFSET;
> +#ifdef ACC100_EXT_MEM
> +       /* Limit cases when HARQ pruning is valid */
> +       harq_prun = ((op->ldpc_dec.harq_combined_output.offset %
> +                       ACC100_HARQ_OFFSET) == 0) &&
> +                       (op->ldpc_dec.harq_combined_output.offset <= UINT16_MAX
> +                       * ACC100_HARQ_OFFSET);
> +#endif
> +       if (fcw->hcin_en > 0) {
> +               harq_in_length = op->ldpc_dec.harq_combined_input.length;
> +               if (fcw->hcin_decomp_mode > 0)
> +                       harq_in_length = harq_in_length * 8 / 6;
> +               harq_in_length = RTE_ALIGN(harq_in_length, 64);
> +               if ((harq_layout[harq_index].offset > 0) & harq_prun) {
> +                       rte_bbdev_log_debug("HARQ IN offset unexpected for now\n");
> +                       fcw->hcin_size0 = harq_layout[harq_index].size0;
> +                       fcw->hcin_offset = harq_layout[harq_index].offset;
> +                       fcw->hcin_size1 = harq_in_length -
> +                                       harq_layout[harq_index].offset;
> +               } else {
> +                       fcw->hcin_size0 = harq_in_length;
> +                       fcw->hcin_offset = 0;
> +                       fcw->hcin_size1 = 0;
> +               }
> +       } else {
> +               fcw->hcin_size0 = 0;
> +               fcw->hcin_offset = 0;
> +               fcw->hcin_size1 = 0;
> +       }
> +
> +       fcw->itmax = op->ldpc_dec.iter_max;
> +       fcw->itstop = check_bit(op->ldpc_dec.op_flags,
> +                       RTE_BBDEV_LDPC_ITERATION_STOP_ENABLE);
> +       fcw->synd_precoder = fcw->itstop;
> +       /*
> +        * These are all implicitly set
> +        * fcw->synd_post = 0;
> +        * fcw->so_en = 0;
> +        * fcw->so_bypass_rm = 0;
> +        * fcw->so_bypass_intlv = 0;
> +        * fcw->dec_convllr = 0;
> +        * fcw->hcout_convllr = 0;
> +        * fcw->hcout_size1 = 0;
> +        * fcw->so_it = 0;
> +        * fcw->hcout_offset = 0;
> +        * fcw->negstop_th = 0;
> +        * fcw->negstop_it = 0;
> +        * fcw->negstop_en = 0;
> +        * fcw->gain_i = 1;
> +        * fcw->gain_h = 1;
> +        */
> +       if (fcw->hcout_en > 0) {
> +               parity_offset = (op->ldpc_dec.basegraph == 1 ? 20 : 8)
> +                       * op->ldpc_dec.z_c - op->ldpc_dec.n_filler;
> +               k0_p = (fcw->k0 > parity_offset) ?
> +                               fcw->k0 - op->ldpc_dec.n_filler : fcw->k0;
> +               ncb_p = fcw->ncb - op->ldpc_dec.n_filler;
> +               l = k0_p + fcw->rm_e;
> +               harq_out_length = (uint16_t) fcw->hcin_size0;
> +               harq_out_length = RTE_MIN(RTE_MAX(harq_out_length, l), ncb_p);
> +               harq_out_length = (harq_out_length + 0x3F) & 0xFFC0;
> +               if ((k0_p > fcw->hcin_size0 + ACC100_HARQ_OFFSET_THRESHOLD)
> &&
> +                               harq_prun) {
> +                       fcw->hcout_size0 = (uint16_t) fcw->hcin_size0;
> +                       fcw->hcout_offset = k0_p & 0xFFC0;
> +                       fcw->hcout_size1 = harq_out_length - fcw->hcout_offset;
> +               } else {
> +                       fcw->hcout_size0 = harq_out_length;
> +                       fcw->hcout_size1 = 0;
> +                       fcw->hcout_offset = 0;
> +               }
> +               harq_layout[harq_index].offset = fcw->hcout_offset;
> +               harq_layout[harq_index].size0 = fcw->hcout_size0;
> +       } else {
> +               fcw->hcout_size0 = 0;
> +               fcw->hcout_size1 = 0;
> +               fcw->hcout_offset = 0;
> +       }
> +}
> +
> +/**
> + * Fills descriptor with data pointers of one block type.
> + *
> + * @param desc
> + *   Pointer to DMA descriptor.
> + * @param input
> + *   Pointer to pointer to input data which will be encoded. It can be changed
> + *   and points to next segment in scatter-gather case.
> + * @param offset
> + *   Input offset in rte_mbuf structure. It is used for calculating the point
> + *   where data is starting.
> + * @param cb_len
> + *   Length of currently processed Code Block
> + * @param seg_total_left
> + *   It indicates how many bytes still left in segment (mbuf) for further
> + *   processing.
> + * @param op_flags
> + *   Store information about device capabilities
> + * @param next_triplet
> + *   Index for ACC100 DMA Descriptor triplet
> + *
> + * @return
> + *   Returns index of next triplet on success, other value if lengths of
> + *   pkt and processed cb do not match.
> + *
> + */
> +static inline int
> +acc100_dma_fill_blk_type_in(struct acc100_dma_req_desc *desc,
> +               struct rte_mbuf **input, uint32_t *offset, uint32_t cb_len,
> +               uint32_t *seg_total_left, int next_triplet)
> +{
> +       uint32_t part_len;
> +       struct rte_mbuf *m = *input;
> +
> +       part_len = (*seg_total_left < cb_len) ? *seg_total_left : cb_len;
> +       cb_len -= part_len;
> +       *seg_total_left -= part_len;
> +
> +       desc->data_ptrs[next_triplet].address =
> +                       rte_pktmbuf_iova_offset(m, *offset);
> +       desc->data_ptrs[next_triplet].blen = part_len;
> +       desc->data_ptrs[next_triplet].blkid = ACC100_DMA_BLKID_IN;
> +       desc->data_ptrs[next_triplet].last = 0;
> +       desc->data_ptrs[next_triplet].dma_ext = 0;
> +       *offset += part_len;
> +       next_triplet++;
> +
> +       while (cb_len > 0) {
> +               if (next_triplet < ACC100_DMA_MAX_NUM_POINTERS &&
> +                               m->next != NULL) {
> +
> +                       m = m->next;
> +                       *seg_total_left = rte_pktmbuf_data_len(m);
> +                       part_len = (*seg_total_left < cb_len) ?
> +                                       *seg_total_left :
> +                                       cb_len;
> +                       desc->data_ptrs[next_triplet].address =
> +                                       rte_pktmbuf_mtophys(m);
> +                       desc->data_ptrs[next_triplet].blen = part_len;
> +                       desc->data_ptrs[next_triplet].blkid =
> +                                       ACC100_DMA_BLKID_IN;
> +                       desc->data_ptrs[next_triplet].last = 0;
> +                       desc->data_ptrs[next_triplet].dma_ext = 0;
> +                       cb_len -= part_len;
> +                       *seg_total_left -= part_len;
> +                       /* Initializing offset for next segment (mbuf) */
> +                       *offset = part_len;
> +                       next_triplet++;
> +               } else {
> +                       rte_bbdev_log(ERR,
> +                               "Some data still left for processing: "
> +                               "data_left: %u, next_triplet: %u, next_mbuf: %p",
> +                               cb_len, next_triplet, m->next);
> +                       return -EINVAL;
> +               }
> +       }
> +       /* Storing new mbuf as it could be changed in scatter-gather case*/
> +       *input = m;
> +
> +       return next_triplet;
> +}
> +
> +/* Fills descriptor with data pointers of one block type.
> + * Returns index of next triplet on success, other value if lengths of
> + * output data and processed mbuf do not match.
> + */
> +static inline int
> +acc100_dma_fill_blk_type_out(struct acc100_dma_req_desc *desc,
> +               struct rte_mbuf *output, uint32_t out_offset,
> +               uint32_t output_len, int next_triplet, int blk_id)
> +{
> +       desc->data_ptrs[next_triplet].address =
> +                       rte_pktmbuf_iova_offset(output, out_offset);
> +       desc->data_ptrs[next_triplet].blen = output_len;
> +       desc->data_ptrs[next_triplet].blkid = blk_id;
> +       desc->data_ptrs[next_triplet].last = 0;
> +       desc->data_ptrs[next_triplet].dma_ext = 0;
> +       next_triplet++;
> +
> +       return next_triplet;
> +}
> +
> +static inline int
> +acc100_dma_desc_le_fill(struct rte_bbdev_enc_op *op,
> +               struct acc100_dma_req_desc *desc, struct rte_mbuf **input,
> +               struct rte_mbuf *output, uint32_t *in_offset,
> +               uint32_t *out_offset, uint32_t *out_length,
> +               uint32_t *mbuf_total_left, uint32_t *seg_total_left)
> +{
> +       int next_triplet = 1; /* FCW already done */
> +       uint16_t K, in_length_in_bits, in_length_in_bytes;
> +       struct rte_bbdev_op_ldpc_enc *enc = &op->ldpc_enc;
> +
> +       desc->word0 = ACC100_DMA_DESC_TYPE;
> +       desc->word1 = 0; /**< Timestamp could be disabled */
> +       desc->word2 = 0;
> +       desc->word3 = 0;
> +       desc->numCBs = 1;
> +
> +       K = (enc->basegraph == 1 ? 22 : 10) * enc->z_c;
> +       in_length_in_bits = K - enc->n_filler;
> +       if ((enc->op_flags & RTE_BBDEV_LDPC_CRC_24A_ATTACH) ||
> +                       (enc->op_flags & RTE_BBDEV_LDPC_CRC_24B_ATTACH))
> +               in_length_in_bits -= 24;
> +       in_length_in_bytes = in_length_in_bits >> 3;
> +
> +       if (unlikely((*mbuf_total_left == 0) ||
> +                       (*mbuf_total_left < in_length_in_bytes))) {
> +               rte_bbdev_log(ERR,
> +                               "Mismatch between mbuf length and included CB sizes:
> mbuf len %u, cb len %u",
> +                               *mbuf_total_left, in_length_in_bytes);
> +               return -1;
> +       }
> +
> +       next_triplet = acc100_dma_fill_blk_type_in(desc, input, in_offset,
> +                       in_length_in_bytes,
> +                       seg_total_left, next_triplet);
> +       if (unlikely(next_triplet < 0)) {
> +               rte_bbdev_log(ERR,
> +                               "Mismatch between data to process and mbuf data length
> in bbdev_op: %p",
> +                               op);
> +               return -1;
> +       }
> +       desc->data_ptrs[next_triplet - 1].last = 1;
> +       desc->m2dlen = next_triplet;
> +       *mbuf_total_left -= in_length_in_bytes;
> +
> +       /* Set output length */
> +       /* Integer round up division by 8 */
> +       *out_length = (enc->cb_params.e + 7) >> 3;
> +
> +       next_triplet = acc100_dma_fill_blk_type_out(desc, output, *out_offset,
> +                       *out_length, next_triplet, ACC100_DMA_BLKID_OUT_ENC);
> +       if (unlikely(next_triplet < 0)) {
> +               rte_bbdev_log(ERR,
> +                               "Mismatch between data to process and mbuf data length
> in bbdev_op: %p",
> +                               op);
> +               return -1;
> +       }
> +       op->ldpc_enc.output.length += *out_length;
> +       *out_offset += *out_length;
> +       desc->data_ptrs[next_triplet - 1].last = 1;
> +       desc->data_ptrs[next_triplet - 1].dma_ext = 0;
> +       desc->d2mlen = next_triplet - desc->m2dlen;
> +
> +       desc->op_addr = op;
> +
> +       return 0;
> +}
> +
> +static inline int
> +acc100_dma_desc_ld_fill(struct rte_bbdev_dec_op *op,
> +               struct acc100_dma_req_desc *desc,
> +               struct rte_mbuf **input, struct rte_mbuf *h_output,
> +               uint32_t *in_offset, uint32_t *h_out_offset,
> +               uint32_t *h_out_length, uint32_t *mbuf_total_left,
> +               uint32_t *seg_total_left,
> +               struct acc100_fcw_ld *fcw)
> +{
> +       struct rte_bbdev_op_ldpc_dec *dec = &op->ldpc_dec;
> +       int next_triplet = 1; /* FCW already done */
> +       uint32_t input_length;
> +       uint16_t output_length, crc24_overlap = 0;
> +       uint16_t sys_cols, K, h_p_size, h_np_size;
> +       bool h_comp = check_bit(dec->op_flags,
> +                       RTE_BBDEV_LDPC_HARQ_6BIT_COMPRESSION);
> +
> +       desc->word0 = ACC100_DMA_DESC_TYPE;
> +       desc->word1 = 0; /**< Timestamp could be disabled */
> +       desc->word2 = 0;
> +       desc->word3 = 0;
> +       desc->numCBs = 1;
> +
> +       if (check_bit(op->ldpc_dec.op_flags,
> +                       RTE_BBDEV_LDPC_CRC_TYPE_24B_DROP))
> +               crc24_overlap = 24;
> +
> +       /* Compute some LDPC BG lengths */
> +       input_length = dec->cb_params.e;
> +       if (check_bit(op->ldpc_dec.op_flags,
> +                       RTE_BBDEV_LDPC_LLR_COMPRESSION))
> +               input_length = (input_length * 3 + 3) / 4;
> +       sys_cols = (dec->basegraph == 1) ? 22 : 10;
> +       K = sys_cols * dec->z_c;
> +       output_length = K - dec->n_filler - crc24_overlap;
> +
> +       if (unlikely((*mbuf_total_left == 0) ||
> +                       (*mbuf_total_left < input_length))) {
> +               rte_bbdev_log(ERR,
> +                               "Mismatch between mbuf length and included CB sizes:
> mbuf len %u, cb len %u",
> +                               *mbuf_total_left, input_length);
> +               return -1;
> +       }
> +
> +       next_triplet = acc100_dma_fill_blk_type_in(desc, input,
> +                       in_offset, input_length,
> +                       seg_total_left, next_triplet);
> +
> +       if (unlikely(next_triplet < 0)) {
> +               rte_bbdev_log(ERR,
> +                               "Mismatch between data to process and mbuf data length
> in bbdev_op: %p",
> +                               op);
> +               return -1;
> +       }
> +
> +       if (check_bit(op->ldpc_dec.op_flags,
> +                               RTE_BBDEV_LDPC_HQ_COMBINE_IN_ENABLE)) {
> +               h_p_size = fcw->hcin_size0 + fcw->hcin_size1;
> +               if (h_comp)
> +                       h_p_size = (h_p_size * 3 + 3) / 4;
> +               desc->data_ptrs[next_triplet].address =
> +                               dec->harq_combined_input.offset;
> +               desc->data_ptrs[next_triplet].blen = h_p_size;
> +               desc->data_ptrs[next_triplet].blkid =
> ACC100_DMA_BLKID_IN_HARQ;
> +               desc->data_ptrs[next_triplet].dma_ext = 1;
> +#ifndef ACC100_EXT_MEM
> +               acc100_dma_fill_blk_type_out(
> +                               desc,
> +                               op->ldpc_dec.harq_combined_input.data,
> +                               op->ldpc_dec.harq_combined_input.offset,
> +                               h_p_size,
> +                               next_triplet,
> +                               ACC100_DMA_BLKID_IN_HARQ);
> +#endif
> +               next_triplet++;
> +       }
> +
> +       desc->data_ptrs[next_triplet - 1].last = 1;
> +       desc->m2dlen = next_triplet;
> +       *mbuf_total_left -= input_length;
> +
> +       next_triplet = acc100_dma_fill_blk_type_out(desc, h_output,
> +                       *h_out_offset, output_length >> 3, next_triplet,
> +                       ACC100_DMA_BLKID_OUT_HARD);
> +       if (unlikely(next_triplet < 0)) {
> +               rte_bbdev_log(ERR,
> +                               "Mismatch between data to process and mbuf data length
> in bbdev_op: %p",
> +                               op);
> +               return -1;
> +       }
> +
> +       if (check_bit(op->ldpc_dec.op_flags,
> +                               RTE_BBDEV_LDPC_HQ_COMBINE_OUT_ENABLE)) {
> +               /* Pruned size of the HARQ */
> +               h_p_size = fcw->hcout_size0 + fcw->hcout_size1;
> +               /* Non-Pruned size of the HARQ */
> +               h_np_size = fcw->hcout_offset > 0 ?
> +                               fcw->hcout_offset + fcw->hcout_size1 :
> +                               h_p_size;
> +               if (h_comp) {
> +                       h_np_size = (h_np_size * 3 + 3) / 4;
> +                       h_p_size = (h_p_size * 3 + 3) / 4;
> +               }
> +               dec->harq_combined_output.length = h_np_size;
> +               desc->data_ptrs[next_triplet].address =
> +                               dec->harq_combined_output.offset;
> +               desc->data_ptrs[next_triplet].blen = h_p_size;
> +               desc->data_ptrs[next_triplet].blkid =
> ACC100_DMA_BLKID_OUT_HARQ;
> +               desc->data_ptrs[next_triplet].dma_ext = 1;
> +#ifndef ACC100_EXT_MEM
> +               acc100_dma_fill_blk_type_out(
> +                               desc,
> +                               dec->harq_combined_output.data,
> +                               dec->harq_combined_output.offset,
> +                               h_p_size,
> +                               next_triplet,
> +                               ACC100_DMA_BLKID_OUT_HARQ);
> +#endif
> +               next_triplet++;
> +       }
> +
> +       *h_out_length = output_length >> 3;
> +       dec->hard_output.length += *h_out_length;
> +       *h_out_offset += *h_out_length;
> +       desc->data_ptrs[next_triplet - 1].last = 1;
> +       desc->d2mlen = next_triplet - desc->m2dlen;
> +
> +       desc->op_addr = op;
> +
> +       return 0;
> +}
> +
> +static inline void
> +acc100_dma_desc_ld_update(struct rte_bbdev_dec_op *op,
> +               struct acc100_dma_req_desc *desc,
> +               struct rte_mbuf *input, struct rte_mbuf *h_output,
> +               uint32_t *in_offset, uint32_t *h_out_offset,
> +               uint32_t *h_out_length,
> +               union acc100_harq_layout_data *harq_layout)
> +{
> +       int next_triplet = 1; /* FCW already done */
> +       desc->data_ptrs[next_triplet].address =
> +                       rte_pktmbuf_iova_offset(input, *in_offset);
> +       next_triplet++;
> +
> +       if (check_bit(op->ldpc_dec.op_flags,
> +                               RTE_BBDEV_LDPC_HQ_COMBINE_IN_ENABLE)) {
> +               struct rte_bbdev_op_data hi = op->ldpc_dec.harq_combined_input;
> +               desc->data_ptrs[next_triplet].address = hi.offset;
> +#ifndef ACC100_EXT_MEM
> +               desc->data_ptrs[next_triplet].address =
> +                               rte_pktmbuf_iova_offset(hi.data, hi.offset);
> +#endif
> +               next_triplet++;
> +       }
> +
> +       desc->data_ptrs[next_triplet].address =
> +                       rte_pktmbuf_iova_offset(h_output, *h_out_offset);
> +       *h_out_length = desc->data_ptrs[next_triplet].blen;
> +       next_triplet++;
> +
> +       if (check_bit(op->ldpc_dec.op_flags,
> +                               RTE_BBDEV_LDPC_HQ_COMBINE_OUT_ENABLE)) {
> +               desc->data_ptrs[next_triplet].address =
> +                               op->ldpc_dec.harq_combined_output.offset;
> +               /* Adjust based on previous operation */
> +               struct rte_bbdev_dec_op *prev_op = desc->op_addr;
> +               op->ldpc_dec.harq_combined_output.length =
> +                               prev_op->ldpc_dec.harq_combined_output.length;
> +               int16_t hq_idx = op->ldpc_dec.harq_combined_output.offset /
> +                               ACC100_HARQ_OFFSET;
> +               int16_t prev_hq_idx =
> +                               prev_op->ldpc_dec.harq_combined_output.offset
> +                               / ACC100_HARQ_OFFSET;
> +               harq_layout[hq_idx].val = harq_layout[prev_hq_idx].val;
> +#ifndef ACC100_EXT_MEM
> +               struct rte_bbdev_op_data ho =
> +                               op->ldpc_dec.harq_combined_output;
> +               desc->data_ptrs[next_triplet].address =
> +                               rte_pktmbuf_iova_offset(ho.data, ho.offset);
> +#endif
> +               next_triplet++;
> +       }
> +
> +       op->ldpc_dec.hard_output.length += *h_out_length;
> +       desc->op_addr = op;
> +}
> +
> +
> +/* Enqueue a number of operations to HW and update software rings */
> +static inline void
> +acc100_dma_enqueue(struct acc100_queue *q, uint16_t n,
> +               struct rte_bbdev_stats *queue_stats)
> +{
> +       union acc100_enqueue_reg_fmt enq_req;
> +#ifdef RTE_BBDEV_OFFLOAD_COST
> +       uint64_t start_time = 0;
> +       queue_stats->acc_offload_cycles = 0;
> +       RTE_SET_USED(queue_stats);
> +#else
> +       RTE_SET_USED(queue_stats);
> +#endif
> +
> +       enq_req.val = 0;
> +       /* Setting offset, 100b for 256 DMA Desc */
> +       enq_req.addr_offset = ACC100_DESC_OFFSET;
> +
> +       /* Split ops into batches */
> +       do {
> +               union acc100_dma_desc *desc;
> +               uint16_t enq_batch_size;
> +               uint64_t offset;
> +               rte_iova_t req_elem_addr;
> +
> +               enq_batch_size = RTE_MIN(n, MAX_ENQ_BATCH_SIZE);
> +
> +               /* Set flag on last descriptor in a batch */
> +               desc = q->ring_addr + ((q->sw_ring_head + enq_batch_size - 1) &
> +                               q->sw_ring_wrap_mask);
> +               desc->req.last_desc_in_batch = 1;
> +
> +               /* Calculate the 1st descriptor's address */
> +               offset = ((q->sw_ring_head & q->sw_ring_wrap_mask) *
> +                               sizeof(union acc100_dma_desc));
> +               req_elem_addr = q->ring_addr_phys + offset;
> +
> +               /* Fill enqueue struct */
> +               enq_req.num_elem = enq_batch_size;
> +               /* low 6 bits are not needed */
> +               enq_req.req_elem_addr = (uint32_t)(req_elem_addr >> 6);
> +
> +#ifdef RTE_LIBRTE_BBDEV_DEBUG
> +               rte_memdump(stderr, "Req sdone", desc, sizeof(*desc));
> +#endif
> +               rte_bbdev_log_debug(
> +                               "Enqueue %u reqs (phys %#"PRIx64") to reg %p",
> +                               enq_batch_size,
> +                               req_elem_addr,
> +                               (void *)q->mmio_reg_enqueue);
> +
> +               rte_wmb();
> +
> +#ifdef RTE_BBDEV_OFFLOAD_COST
> +               /* Start time measurement for enqueue function offload. */
> +               start_time = rte_rdtsc_precise();
> +#endif
> +               rte_bbdev_log(DEBUG, "Debug : MMIO Enqueue");
> +               mmio_write(q->mmio_reg_enqueue, enq_req.val);
> +
> +#ifdef RTE_BBDEV_OFFLOAD_COST
> +               queue_stats->acc_offload_cycles +=
> +                               rte_rdtsc_precise() - start_time;
> +#endif
> +
> +               q->aq_enqueued++;
> +               q->sw_ring_head += enq_batch_size;
> +               n -= enq_batch_size;
> +
> +       } while (n);
> +
> +
> +}
> +
> +/* Enqueue one encode operations for ACC100 device in CB mode */
> +static inline int
> +enqueue_ldpc_enc_n_op_cb(struct acc100_queue *q, struct
> rte_bbdev_enc_op **ops,
> +               uint16_t total_enqueued_cbs, int16_t num)
> +{
> +       union acc100_dma_desc *desc = NULL;
> +       uint32_t out_length;
> +       struct rte_mbuf *output_head, *output;
> +       int i, next_triplet;
> +       uint16_t  in_length_in_bytes;
> +       struct rte_bbdev_op_ldpc_enc *enc = &ops[0]->ldpc_enc;
> +
> +       uint16_t desc_idx = ((q->sw_ring_head + total_enqueued_cbs)
> +                       & q->sw_ring_wrap_mask);
> +       desc = q->ring_addr + desc_idx;
> +       acc100_fcw_le_fill(ops[0], &desc->req.fcw_le, num);
> +
> +       /** This could be done at polling */
> +       desc->req.word0 = ACC100_DMA_DESC_TYPE;
> +       desc->req.word1 = 0; /**< Timestamp could be disabled */
> +       desc->req.word2 = 0;
> +       desc->req.word3 = 0;
> +       desc->req.numCBs = num;
> +
> +       in_length_in_bytes = ops[0]->ldpc_enc.input.data->data_len;
> +       out_length = (enc->cb_params.e + 7) >> 3;
> +       desc->req.m2dlen = 1 + num;
> +       desc->req.d2mlen = num;
> +       next_triplet = 1;
> +
> +       for (i = 0; i < num; i++) {
> +               desc->req.data_ptrs[next_triplet].address =
> +                       rte_pktmbuf_iova_offset(ops[i]->ldpc_enc.input.data, 0);
> +               desc->req.data_ptrs[next_triplet].blen = in_length_in_bytes;
> +               next_triplet++;
> +               desc->req.data_ptrs[next_triplet].address =
> +                               rte_pktmbuf_iova_offset(
> +                               ops[i]->ldpc_enc.output.data, 0);
> +               desc->req.data_ptrs[next_triplet].blen = out_length;
> +               next_triplet++;
> +               ops[i]->ldpc_enc.output.length = out_length;
> +               output_head = output = ops[i]->ldpc_enc.output.data;
> +               mbuf_append(output_head, output, out_length);
> +               output->data_len = out_length;
> +       }
> +
> +       desc->req.op_addr = ops[0];
> +
> +#ifdef RTE_LIBRTE_BBDEV_DEBUG
> +       rte_memdump(stderr, "FCW", &desc->req.fcw_le,
> +                       sizeof(desc->req.fcw_le) - 8);
> +       rte_memdump(stderr, "Req Desc.", desc, sizeof(*desc));
> +#endif
> +
> +       /* One CB (one op) was successfully prepared to enqueue */
> +       return num;
> +}
> +
> +/* Enqueue one encode operations for ACC100 device in CB mode */
> +static inline int
> +enqueue_ldpc_enc_one_op_cb(struct acc100_queue *q, struct
> rte_bbdev_enc_op *op,
> +               uint16_t total_enqueued_cbs)
> +{
> +       union acc100_dma_desc *desc = NULL;
> +       int ret;
> +       uint32_t in_offset, out_offset, out_length, mbuf_total_left,
> +               seg_total_left;
> +       struct rte_mbuf *input, *output_head, *output;
> +
> +       uint16_t desc_idx = ((q->sw_ring_head + total_enqueued_cbs)
> +                       & q->sw_ring_wrap_mask);
> +       desc = q->ring_addr + desc_idx;
> +       acc100_fcw_le_fill(op, &desc->req.fcw_le, 1);
> +
> +       input = op->ldpc_enc.input.data;
> +       output_head = output = op->ldpc_enc.output.data;
> +       in_offset = op->ldpc_enc.input.offset;
> +       out_offset = op->ldpc_enc.output.offset;
> +       out_length = 0;
> +       mbuf_total_left = op->ldpc_enc.input.length;
> +       seg_total_left = rte_pktmbuf_data_len(op->ldpc_enc.input.data)
> +                       - in_offset;
> +
> +       ret = acc100_dma_desc_le_fill(op, &desc->req, &input, output,
> +                       &in_offset, &out_offset, &out_length, &mbuf_total_left,
> +                       &seg_total_left);
> +
> +       if (unlikely(ret < 0))
> +               return ret;
> +
> +       mbuf_append(output_head, output, out_length);
> +
> +#ifdef RTE_LIBRTE_BBDEV_DEBUG
> +       rte_memdump(stderr, "FCW", &desc->req.fcw_le,
> +                       sizeof(desc->req.fcw_le) - 8);
> +       rte_memdump(stderr, "Req Desc.", desc, sizeof(*desc));
> +
> +       /* Check if any data left after processing one CB */
> +       if (mbuf_total_left != 0) {
> +               rte_bbdev_log(ERR,
> +                               "Some date still left after processing one CB:
> mbuf_total_left = %u",
> +                               mbuf_total_left);
> +               return -EINVAL;
> +       }
> +#endif
> +       /* One CB (one op) was successfully prepared to enqueue */
> +       return 1;
> +}
> +
> +/** Enqueue one decode operations for ACC100 device in CB mode */
> +static inline int
> +enqueue_ldpc_dec_one_op_cb(struct acc100_queue *q, struct
> rte_bbdev_dec_op *op,
> +               uint16_t total_enqueued_cbs, bool same_op)
> +{
> +       int ret;
> +
> +       union acc100_dma_desc *desc;
> +       uint16_t desc_idx = ((q->sw_ring_head + total_enqueued_cbs)
> +                       & q->sw_ring_wrap_mask);
> +       desc = q->ring_addr + desc_idx;
> +       struct rte_mbuf *input, *h_output_head, *h_output;
> +       uint32_t in_offset, h_out_offset, h_out_length, mbuf_total_left;
> +       input = op->ldpc_dec.input.data;
> +       h_output_head = h_output = op->ldpc_dec.hard_output.data;
> +       in_offset = op->ldpc_dec.input.offset;
> +       h_out_offset = op->ldpc_dec.hard_output.offset;
> +       mbuf_total_left = op->ldpc_dec.input.length;
> +#ifdef RTE_LIBRTE_BBDEV_DEBUG
> +       if (unlikely(input == NULL)) {
> +               rte_bbdev_log(ERR, "Invalid mbuf pointer");
> +               return -EFAULT;
> +       }
> +#endif
> +       union acc100_harq_layout_data *harq_layout = q->d->harq_layout;
> +
> +       if (same_op) {
> +               union acc100_dma_desc *prev_desc;
> +               desc_idx = ((q->sw_ring_head + total_enqueued_cbs - 1)
> +                               & q->sw_ring_wrap_mask);
> +               prev_desc = q->ring_addr + desc_idx;
> +               uint8_t *prev_ptr = (uint8_t *) prev_desc;
> +               uint8_t *new_ptr = (uint8_t *) desc;
> +               /* Copy first 4 words and BDESCs */
> +               rte_memcpy(new_ptr, prev_ptr, 16);
> +               rte_memcpy(new_ptr + 36, prev_ptr + 36, 40);
> +               desc->req.op_addr = prev_desc->req.op_addr;
> +               /* Copy FCW */
> +               rte_memcpy(new_ptr + ACC100_DESC_FCW_OFFSET,
> +                               prev_ptr + ACC100_DESC_FCW_OFFSET,
> +                               ACC100_FCW_LD_BLEN);
> +               acc100_dma_desc_ld_update(op, &desc->req, input, h_output,
> +                               &in_offset, &h_out_offset,
> +                               &h_out_length, harq_layout);
> +       } else {
> +               struct acc100_fcw_ld *fcw;
> +               uint32_t seg_total_left;
> +               fcw = &desc->req.fcw_ld;
> +               acc100_fcw_ld_fill(op, fcw, harq_layout);
> +
> +               /* Special handling when overusing mbuf */
> +               if (fcw->rm_e < MAX_E_MBUF)
> +                       seg_total_left = rte_pktmbuf_data_len(input)
> +                                       - in_offset;
> +               else
> +                       seg_total_left = fcw->rm_e;
> +
> +               ret = acc100_dma_desc_ld_fill(op, &desc->req, &input, h_output,
> +                               &in_offset, &h_out_offset,
> +                               &h_out_length, &mbuf_total_left,
> +                               &seg_total_left, fcw);
> +               if (unlikely(ret < 0))
> +                       return ret;
> +       }
> +
> +       /* Hard output */
> +       mbuf_append(h_output_head, h_output, h_out_length);
> +#ifndef ACC100_EXT_MEM
> +       if (op->ldpc_dec.harq_combined_output.length > 0) {
> +               /* Push the HARQ output into host memory */
> +               struct rte_mbuf *hq_output_head, *hq_output;
> +               hq_output_head = op->ldpc_dec.harq_combined_output.data;
> +               hq_output = op->ldpc_dec.harq_combined_output.data;
> +               mbuf_append(hq_output_head, hq_output,
> +                               op->ldpc_dec.harq_combined_output.length);
> +       }
> +#endif
> +
> +#ifdef RTE_LIBRTE_BBDEV_DEBUG
> +       rte_memdump(stderr, "FCW", &desc->req.fcw_ld,
> +                       sizeof(desc->req.fcw_ld) - 8);
> +       rte_memdump(stderr, "Req Desc.", desc, sizeof(*desc));
> +#endif
> +
> +       /* One CB (one op) was successfully prepared to enqueue */
> +       return 1;
> +}
> +
> +
> +/* Enqueue one decode operations for ACC100 device in TB mode */
> +static inline int
> +enqueue_ldpc_dec_one_op_tb(struct acc100_queue *q, struct
> rte_bbdev_dec_op *op,
> +               uint16_t total_enqueued_cbs, uint8_t cbs_in_tb)
> +{
> +       union acc100_dma_desc *desc = NULL;
> +       int ret;
> +       uint8_t r, c;
> +       uint32_t in_offset, h_out_offset,
> +               h_out_length, mbuf_total_left, seg_total_left;
> +       struct rte_mbuf *input, *h_output_head, *h_output;
> +       uint16_t current_enqueued_cbs = 0;
> +
> +       uint16_t desc_idx = ((q->sw_ring_head + total_enqueued_cbs)
> +                       & q->sw_ring_wrap_mask);
> +       desc = q->ring_addr + desc_idx;
> +       uint64_t fcw_offset = (desc_idx << 8) + ACC100_DESC_FCW_OFFSET;
> +       union acc100_harq_layout_data *harq_layout = q->d->harq_layout;
> +       acc100_fcw_ld_fill(op, &desc->req.fcw_ld, harq_layout);
> +
> +       input = op->ldpc_dec.input.data;
> +       h_output_head = h_output = op->ldpc_dec.hard_output.data;
> +       in_offset = op->ldpc_dec.input.offset;
> +       h_out_offset = op->ldpc_dec.hard_output.offset;
> +       h_out_length = 0;
> +       mbuf_total_left = op->ldpc_dec.input.length;
> +       c = op->ldpc_dec.tb_params.c;
> +       r = op->ldpc_dec.tb_params.r;
> +
> +       while (mbuf_total_left > 0 && r < c) {
> +
> +               seg_total_left = rte_pktmbuf_data_len(input) - in_offset;
> +
> +               /* Set up DMA descriptor */
> +               desc = q->ring_addr + ((q->sw_ring_head + total_enqueued_cbs)
> +                               & q->sw_ring_wrap_mask);
> +               desc->req.data_ptrs[0].address = q->ring_addr_phys + fcw_offset;
> +               desc->req.data_ptrs[0].blen = ACC100_FCW_LD_BLEN;
> +               ret = acc100_dma_desc_ld_fill(op, &desc->req, &input,
> +                               h_output, &in_offset, &h_out_offset,
> +                               &h_out_length,
> +                               &mbuf_total_left, &seg_total_left,
> +                               &desc->req.fcw_ld);
> +
> +               if (unlikely(ret < 0))
> +                       return ret;
> +
> +               /* Hard output */
> +               mbuf_append(h_output_head, h_output, h_out_length);
> +
> +               /* Set total number of CBs in TB */
> +               desc->req.cbs_in_tb = cbs_in_tb;
> +#ifdef RTE_LIBRTE_BBDEV_DEBUG
> +               rte_memdump(stderr, "FCW", &desc->req.fcw_td,
> +                               sizeof(desc->req.fcw_td) - 8);
> +               rte_memdump(stderr, "Req Desc.", desc, sizeof(*desc));
> +#endif
> +
> +               if (seg_total_left == 0) {
> +                       /* Go to the next mbuf */
> +                       input = input->next;
> +                       in_offset = 0;
> +                       h_output = h_output->next;
> +                       h_out_offset = 0;
> +               }
> +               total_enqueued_cbs++;
> +               current_enqueued_cbs++;
> +               r++;
> +       }
> +
> +       if (unlikely(desc == NULL))
> +               return current_enqueued_cbs;
> +
> +#ifdef RTE_LIBRTE_BBDEV_DEBUG
> +       /* Check if any CBs left for processing */
> +       if (mbuf_total_left != 0) {
> +               rte_bbdev_log(ERR,
> +                               "Some date still left for processing: mbuf_total_left = %u",
> +                               mbuf_total_left);
> +               return -EINVAL;
> +       }
> +#endif
> +       /* Set SDone on last CB descriptor for TB mode */
> +       desc->req.sdone_enable = 1;
> +       desc->req.irq_enable = q->irq_enable;
> +
> +       return current_enqueued_cbs;
> +}
> +
> +
> +/* Calculates number of CBs in processed encoder TB based on 'r' and input
> + * length.
> + */
> +static inline uint8_t
> +get_num_cbs_in_tb_enc(struct rte_bbdev_op_turbo_enc *turbo_enc)
> +{
> +       uint8_t c, c_neg, r, crc24_bits = 0;
> +       uint16_t k, k_neg, k_pos;
> +       uint8_t cbs_in_tb = 0;
> +       int32_t length;
> +
> +       length = turbo_enc->input.length;
> +       r = turbo_enc->tb_params.r;
> +       c = turbo_enc->tb_params.c;
> +       c_neg = turbo_enc->tb_params.c_neg;
> +       k_neg = turbo_enc->tb_params.k_neg;
> +       k_pos = turbo_enc->tb_params.k_pos;
> +       crc24_bits = 0;
> +       if (check_bit(turbo_enc->op_flags,
> RTE_BBDEV_TURBO_CRC_24B_ATTACH))
> +               crc24_bits = 24;
> +       while (length > 0 && r < c) {
> +               k = (r < c_neg) ? k_neg : k_pos;
> +               length -= (k - crc24_bits) >> 3;
> +               r++;
> +               cbs_in_tb++;
> +       }
> +
> +       return cbs_in_tb;
> +}
> +
> +/* Calculates number of CBs in processed decoder TB based on 'r' and input
> + * length.
> + */
> +static inline uint16_t
> +get_num_cbs_in_tb_dec(struct rte_bbdev_op_turbo_dec *turbo_dec)
> +{
> +       uint8_t c, c_neg, r = 0;
> +       uint16_t kw, k, k_neg, k_pos, cbs_in_tb = 0;
> +       int32_t length;
> +
> +       length = turbo_dec->input.length;
> +       r = turbo_dec->tb_params.r;
> +       c = turbo_dec->tb_params.c;
> +       c_neg = turbo_dec->tb_params.c_neg;
> +       k_neg = turbo_dec->tb_params.k_neg;
> +       k_pos = turbo_dec->tb_params.k_pos;
> +       while (length > 0 && r < c) {
> +               k = (r < c_neg) ? k_neg : k_pos;
> +               kw = RTE_ALIGN_CEIL(k + 4, 32) * 3;
> +               length -= kw;
> +               r++;
> +               cbs_in_tb++;
> +       }
> +
> +       return cbs_in_tb;
> +}
> +
> +/* Calculates number of CBs in processed decoder TB based on 'r' and input
> + * length.
> + */
> +static inline uint16_t
> +get_num_cbs_in_tb_ldpc_dec(struct rte_bbdev_op_ldpc_dec *ldpc_dec)
> +{
> +       uint16_t r, cbs_in_tb = 0;
> +       int32_t length = ldpc_dec->input.length;
> +       r = ldpc_dec->tb_params.r;
> +       while (length > 0 && r < ldpc_dec->tb_params.c) {
> +               length -=  (r < ldpc_dec->tb_params.cab) ?
> +                               ldpc_dec->tb_params.ea :
> +                               ldpc_dec->tb_params.eb;
> +               r++;
> +               cbs_in_tb++;
> +       }
> +       return cbs_in_tb;
> +}
> +
> +/* Check we can mux encode operations with common FCW */
> +static inline bool
> +check_mux(struct rte_bbdev_enc_op **ops, uint16_t num) {
> +       uint16_t i;
> +       if (num == 1)
> +               return false;
> +       for (i = 1; i < num; ++i) {
> +               /* Only mux compatible code blocks */
> +               if (memcmp((uint8_t *)(&ops[i]->ldpc_enc) + ENC_OFFSET,
> +                               (uint8_t *)(&ops[0]->ldpc_enc) + ENC_OFFSET,
> +                               CMP_ENC_SIZE) != 0)
> +                       return false;
> +       }
> +       return true;
> +}
> +
> +/** Enqueue encode operations for ACC100 device in CB mode. */
> +static inline uint16_t
> +acc100_enqueue_ldpc_enc_cb(struct rte_bbdev_queue_data *q_data,
> +               struct rte_bbdev_enc_op **ops, uint16_t num)
> +{
> +       struct acc100_queue *q = q_data->queue_private;
> +       int32_t avail = q->sw_ring_depth + q->sw_ring_tail - q->sw_ring_head;
> +       uint16_t i = 0;
> +       union acc100_dma_desc *desc;
> +       int ret, desc_idx = 0;
> +       int16_t enq, left = num;
> +
> +       while (left > 0) {
> +               if (unlikely(avail - 1 < 0))
> +                       break;
> +               avail--;
> +               enq = RTE_MIN(left, MUX_5GDL_DESC);
> +               if (check_mux(&ops[i], enq)) {
> +                       ret = enqueue_ldpc_enc_n_op_cb(q, &ops[i],
> +                                       desc_idx, enq);
> +                       if (ret < 0)
> +                               break;
> +                       i += enq;
> +               } else {
> +                       ret = enqueue_ldpc_enc_one_op_cb(q, ops[i], desc_idx);
> +                       if (ret < 0)
> +                               break;
> +                       i++;
> +               }
> +               desc_idx++;
> +               left = num - i;
> +       }
> +
> +       if (unlikely(i == 0))
> +               return 0; /* Nothing to enqueue */
> +
> +       /* Set SDone in last CB in enqueued ops for CB mode*/
> +       desc = q->ring_addr + ((q->sw_ring_head + desc_idx - 1)
> +                       & q->sw_ring_wrap_mask);
> +       desc->req.sdone_enable = 1;
> +       desc->req.irq_enable = q->irq_enable;
> +
> +       acc100_dma_enqueue(q, desc_idx, &q_data->queue_stats);
> +
> +       /* Update stats */
> +       q_data->queue_stats.enqueued_count += i;
> +       q_data->queue_stats.enqueue_err_count += num - i;
> +
> +       return i;
> +}
> +
> +/* Enqueue encode operations for ACC100 device. */
> +static uint16_t
> +acc100_enqueue_ldpc_enc(struct rte_bbdev_queue_data *q_data,
> +               struct rte_bbdev_enc_op **ops, uint16_t num)
> +{
> +       if (unlikely(num == 0))
> +               return 0;
> +       return acc100_enqueue_ldpc_enc_cb(q_data, ops, num);
> +}
> +
> +/* Check we can mux encode operations with common FCW */
> +static inline bool
> +cmp_ldpc_dec_op(struct rte_bbdev_dec_op **ops) {
> +       /* Only mux compatible code blocks */
> +       if (memcmp((uint8_t *)(&ops[0]->ldpc_dec) + DEC_OFFSET,
> +                       (uint8_t *)(&ops[1]->ldpc_dec) +
> +                       DEC_OFFSET, CMP_DEC_SIZE) != 0) {
> +               return false;
> +       } else
> +               return true;
> +}
> +
> +
> +/* Enqueue decode operations for ACC100 device in TB mode */
> +static uint16_t
> +acc100_enqueue_ldpc_dec_tb(struct rte_bbdev_queue_data *q_data,
> +               struct rte_bbdev_dec_op **ops, uint16_t num)
> +{
> +       struct acc100_queue *q = q_data->queue_private;
> +       int32_t avail = q->sw_ring_depth + q->sw_ring_tail - q->sw_ring_head;
> +       uint16_t i, enqueued_cbs = 0;
> +       uint8_t cbs_in_tb;
> +       int ret;
> +
> +       for (i = 0; i < num; ++i) {
> +               cbs_in_tb = get_num_cbs_in_tb_ldpc_dec(&ops[i]->ldpc_dec);
> +               /* Check if there are available space for further processing */
> +               if (unlikely(avail - cbs_in_tb < 0))
> +                       break;
> +               avail -= cbs_in_tb;
> +
> +               ret = enqueue_ldpc_dec_one_op_tb(q, ops[i],
> +                               enqueued_cbs, cbs_in_tb);
> +               if (ret < 0)
> +                       break;
> +               enqueued_cbs += ret;
> +       }
> +
> +       acc100_dma_enqueue(q, enqueued_cbs, &q_data->queue_stats);
> +
> +       /* Update stats */
> +       q_data->queue_stats.enqueued_count += i;
> +       q_data->queue_stats.enqueue_err_count += num - i;
> +       return i;
> +}
> +
> +/* Enqueue decode operations for ACC100 device in CB mode */
> +static uint16_t
> +acc100_enqueue_ldpc_dec_cb(struct rte_bbdev_queue_data *q_data,
> +               struct rte_bbdev_dec_op **ops, uint16_t num)
> +{
> +       struct acc100_queue *q = q_data->queue_private;
> +       int32_t avail = q->sw_ring_depth + q->sw_ring_tail - q->sw_ring_head;
> +       uint16_t i;
> +       union acc100_dma_desc *desc;
> +       int ret;
> +       bool same_op = false;
> +       for (i = 0; i < num; ++i) {
> +               /* Check if there are available space for further processing */
> +               if (unlikely(avail - 1 < 0))
> +                       break;
> +               avail -= 1;
> +
> +               if (i > 0)
> +                       same_op = cmp_ldpc_dec_op(&ops[i-1]);
> +               rte_bbdev_log(INFO, "Op %d %d %d %d %d %d %d %d %d %d %d
> %d\n",
> +                       i, ops[i]->ldpc_dec.op_flags, ops[i]->ldpc_dec.rv_index,
> +                       ops[i]->ldpc_dec.iter_max, ops[i]->ldpc_dec.iter_count,
> +                       ops[i]->ldpc_dec.basegraph, ops[i]->ldpc_dec.z_c,
> +                       ops[i]->ldpc_dec.n_cb, ops[i]->ldpc_dec.q_m,
> +                       ops[i]->ldpc_dec.n_filler, ops[i]->ldpc_dec.cb_params.e,
> +                       same_op);
> +               ret = enqueue_ldpc_dec_one_op_cb(q, ops[i], i, same_op);
> +               if (ret < 0)
> +                       break;
> +       }
> +
> +       if (unlikely(i == 0))
> +               return 0; /* Nothing to enqueue */
> +
> +       /* Set SDone in last CB in enqueued ops for CB mode*/
> +       desc = q->ring_addr + ((q->sw_ring_head + i - 1)
> +                       & q->sw_ring_wrap_mask);
> +
> +       desc->req.sdone_enable = 1;
> +       desc->req.irq_enable = q->irq_enable;
> +
> +       acc100_dma_enqueue(q, i, &q_data->queue_stats);
> +
> +       /* Update stats */
> +       q_data->queue_stats.enqueued_count += i;
> +       q_data->queue_stats.enqueue_err_count += num - i;
> +       return i;
> +}
> +
> +/* Enqueue decode operations for ACC100 device. */
> +static uint16_t
> +acc100_enqueue_ldpc_dec(struct rte_bbdev_queue_data *q_data,
> +               struct rte_bbdev_dec_op **ops, uint16_t num)
> +{
> +       struct acc100_queue *q = q_data->queue_private;
> +       int32_t aq_avail = q->aq_depth +
> +                       (q->aq_dequeued - q->aq_enqueued) / 128;
> +
> +       if (unlikely((aq_avail == 0) || (num == 0)))
> +               return 0;
> +
> +       if (ops[0]->ldpc_dec.code_block_mode == 0)
> +               return acc100_enqueue_ldpc_dec_tb(q_data, ops, num);
> +       else
> +               return acc100_enqueue_ldpc_dec_cb(q_data, ops, num);
> +}
> +
> +
> +/* Dequeue one encode operations from ACC100 device in CB mode */
> +static inline int
> +dequeue_enc_one_op_cb(struct acc100_queue *q, struct rte_bbdev_enc_op
> **ref_op,
> +               uint16_t total_dequeued_cbs, uint32_t *aq_dequeued)
> +{
> +       union acc100_dma_desc *desc, atom_desc;
> +       union acc100_dma_rsp_desc rsp;
> +       struct rte_bbdev_enc_op *op;
> +       int i;
> +
> +       desc = q->ring_addr + ((q->sw_ring_tail + total_dequeued_cbs)
> +                       & q->sw_ring_wrap_mask);
> +       atom_desc.atom_hdr = __atomic_load_n((uint64_t *)desc,
> +                       __ATOMIC_RELAXED);
> +
> +       /* Check fdone bit */
> +       if (!(atom_desc.rsp.val & ACC100_FDONE))
> +               return -1;
> +
> +       rsp.val = atom_desc.rsp.val;
> +       rte_bbdev_log_debug("Resp. desc %p: %x", desc, rsp.val);
> +
> +       /* Dequeue */
> +       op = desc->req.op_addr;
> +
> +       /* Clearing status, it will be set based on response */
> +       op->status = 0;
> +
> +       op->status |= ((rsp.input_err)
> +                       ? (1 << RTE_BBDEV_DATA_ERROR) : 0);
> +       op->status |= ((rsp.dma_err) ? (1 << RTE_BBDEV_DRV_ERROR) : 0);
> +       op->status |= ((rsp.fcw_err) ? (1 << RTE_BBDEV_DRV_ERROR) : 0);
> +
> +       if (desc->req.last_desc_in_batch) {
> +               (*aq_dequeued)++;
> +               desc->req.last_desc_in_batch = 0;
> +       }
> +       desc->rsp.val = ACC100_DMA_DESC_TYPE;
> +       desc->rsp.add_info_0 = 0; /*Reserved bits */
> +       desc->rsp.add_info_1 = 0; /*Reserved bits */
> +
> +       /* Flag that the muxing cause loss of opaque data */
> +       op->opaque_data = (void *)-1;
> +       for (i = 0 ; i < desc->req.numCBs; i++)
> +               ref_op[i] = op;
> +
> +       /* One CB (op) was successfully dequeued */
> +       return desc->req.numCBs;
> +}
> +
> +/* Dequeue one encode operations from ACC100 device in TB mode */
> +static inline int
> +dequeue_enc_one_op_tb(struct acc100_queue *q, struct rte_bbdev_enc_op
> **ref_op,
> +               uint16_t total_dequeued_cbs, uint32_t *aq_dequeued)
> +{
> +       union acc100_dma_desc *desc, *last_desc, atom_desc;
> +       union acc100_dma_rsp_desc rsp;
> +       struct rte_bbdev_enc_op *op;
> +       uint8_t i = 0;
> +       uint16_t current_dequeued_cbs = 0, cbs_in_tb;
> +
> +       desc = q->ring_addr + ((q->sw_ring_tail + total_dequeued_cbs)
> +                       & q->sw_ring_wrap_mask);
> +       atom_desc.atom_hdr = __atomic_load_n((uint64_t *)desc,
> +                       __ATOMIC_RELAXED);
> +
> +       /* Check fdone bit */
> +       if (!(atom_desc.rsp.val & ACC100_FDONE))
> +               return -1;
> +
> +       /* Get number of CBs in dequeued TB */
> +       cbs_in_tb = desc->req.cbs_in_tb;
> +       /* Get last CB */
> +       last_desc = q->ring_addr + ((q->sw_ring_tail
> +                       + total_dequeued_cbs + cbs_in_tb - 1)
> +                       & q->sw_ring_wrap_mask);
> +       /* Check if last CB in TB is ready to dequeue (and thus
> +        * the whole TB) - checking sdone bit. If not return.
> +        */
> +       atom_desc.atom_hdr = __atomic_load_n((uint64_t *)last_desc,
> +                       __ATOMIC_RELAXED);
> +       if (!(atom_desc.rsp.val & ACC100_SDONE))
> +               return -1;
> +
> +       /* Dequeue */
> +       op = desc->req.op_addr;
> +
> +       /* Clearing status, it will be set based on response */
> +       op->status = 0;
> +
> +       while (i < cbs_in_tb) {
> +               desc = q->ring_addr + ((q->sw_ring_tail
> +                               + total_dequeued_cbs)
> +                               & q->sw_ring_wrap_mask);
> +               atom_desc.atom_hdr = __atomic_load_n((uint64_t *)desc,
> +                               __ATOMIC_RELAXED);
> +               rsp.val = atom_desc.rsp.val;
> +               rte_bbdev_log_debug("Resp. desc %p: %x", desc,
> +                               rsp.val);
> +
> +               op->status |= ((rsp.input_err)
> +                               ? (1 << RTE_BBDEV_DATA_ERROR) : 0);
> +               op->status |= ((rsp.dma_err) ? (1 << RTE_BBDEV_DRV_ERROR) : 0);
> +               op->status |= ((rsp.fcw_err) ? (1 << RTE_BBDEV_DRV_ERROR) : 0);
> +
> +               if (desc->req.last_desc_in_batch) {
> +                       (*aq_dequeued)++;
> +                       desc->req.last_desc_in_batch = 0;
> +               }
> +               desc->rsp.val = ACC100_DMA_DESC_TYPE;
> +               desc->rsp.add_info_0 = 0;
> +               desc->rsp.add_info_1 = 0;
> +               total_dequeued_cbs++;
> +               current_dequeued_cbs++;
> +               i++;
> +       }
> +
> +       *ref_op = op;
> +
> +       return current_dequeued_cbs;
> +}
> +
> +/* Dequeue one decode operation from ACC100 device in CB mode */
> +static inline int
> +dequeue_dec_one_op_cb(struct rte_bbdev_queue_data *q_data,
> +               struct acc100_queue *q, struct rte_bbdev_dec_op **ref_op,
> +               uint16_t dequeued_cbs, uint32_t *aq_dequeued)
> +{
> +       union acc100_dma_desc *desc, atom_desc;
> +       union acc100_dma_rsp_desc rsp;
> +       struct rte_bbdev_dec_op *op;
> +
> +       desc = q->ring_addr + ((q->sw_ring_tail + dequeued_cbs)
> +                       & q->sw_ring_wrap_mask);
> +       atom_desc.atom_hdr = __atomic_load_n((uint64_t *)desc,
> +                       __ATOMIC_RELAXED);
> +
> +       /* Check fdone bit */
> +       if (!(atom_desc.rsp.val & ACC100_FDONE))
> +               return -1;
> +
> +       rsp.val = atom_desc.rsp.val;
> +       rte_bbdev_log_debug("Resp. desc %p: %x", desc, rsp.val);
> +
> +       /* Dequeue */
> +       op = desc->req.op_addr;
> +
> +       /* Clearing status, it will be set based on response */
> +       op->status = 0;
> +       op->status |= ((rsp.input_err)
> +                       ? (1 << RTE_BBDEV_DATA_ERROR) : 0);
> +       op->status |= ((rsp.dma_err) ? (1 << RTE_BBDEV_DRV_ERROR) : 0);
> +       op->status |= ((rsp.fcw_err) ? (1 << RTE_BBDEV_DRV_ERROR) : 0);
> +       if (op->status != 0)
> +               q_data->queue_stats.dequeue_err_count++;
> +
> +       /* CRC invalid if error exists */
> +       if (!op->status)
> +               op->status |= rsp.crc_status << RTE_BBDEV_CRC_ERROR;
> +       op->turbo_dec.iter_count = (uint8_t) rsp.iter_cnt / 2;
> +       /* Check if this is the last desc in batch (Atomic Queue) */
> +       if (desc->req.last_desc_in_batch) {
> +               (*aq_dequeued)++;
> +               desc->req.last_desc_in_batch = 0;
> +       }
> +       desc->rsp.val = ACC100_DMA_DESC_TYPE;
> +       desc->rsp.add_info_0 = 0;
> +       desc->rsp.add_info_1 = 0;
> +       *ref_op = op;
> +
> +       /* One CB (op) was successfully dequeued */
> +       return 1;
> +}
> +
> +/* Dequeue one decode operations from ACC100 device in CB mode */
> +static inline int
> +dequeue_ldpc_dec_one_op_cb(struct rte_bbdev_queue_data *q_data,
> +               struct acc100_queue *q, struct rte_bbdev_dec_op **ref_op,
> +               uint16_t dequeued_cbs, uint32_t *aq_dequeued)
> +{
> +       union acc100_dma_desc *desc, atom_desc;
> +       union acc100_dma_rsp_desc rsp;
> +       struct rte_bbdev_dec_op *op;
> +
> +       desc = q->ring_addr + ((q->sw_ring_tail + dequeued_cbs)
> +                       & q->sw_ring_wrap_mask);
> +       atom_desc.atom_hdr = __atomic_load_n((uint64_t *)desc,
> +                       __ATOMIC_RELAXED);
> +
> +       /* Check fdone bit */
> +       if (!(atom_desc.rsp.val & ACC100_FDONE))
> +               return -1;
> +
> +       rsp.val = atom_desc.rsp.val;
> +
> +       /* Dequeue */
> +       op = desc->req.op_addr;
> +
> +       /* Clearing status, it will be set based on response */
> +       op->status = 0;
> +       op->status |= rsp.input_err << RTE_BBDEV_DATA_ERROR;
> +       op->status |= rsp.dma_err << RTE_BBDEV_DRV_ERROR;
> +       op->status |= rsp.fcw_err << RTE_BBDEV_DRV_ERROR;
> +       if (op->status != 0)
> +               q_data->queue_stats.dequeue_err_count++;
> +
> +       op->status |= rsp.crc_status << RTE_BBDEV_CRC_ERROR;
> +       if (op->ldpc_dec.hard_output.length > 0 && !rsp.synd_ok)
> +               op->status |= 1 << RTE_BBDEV_SYNDROME_ERROR;
> +       op->ldpc_dec.iter_count = (uint8_t) rsp.iter_cnt;
> +
> +       /* Check if this is the last desc in batch (Atomic Queue) */
> +       if (desc->req.last_desc_in_batch) {
> +               (*aq_dequeued)++;
> +               desc->req.last_desc_in_batch = 0;
> +       }
> +
> +       desc->rsp.val = ACC100_DMA_DESC_TYPE;
> +       desc->rsp.add_info_0 = 0;
> +       desc->rsp.add_info_1 = 0;
> +
> +       *ref_op = op;
> +
> +       /* One CB (op) was successfully dequeued */
> +       return 1;
> +}
> +
> +/* Dequeue one decode operations from ACC100 device in TB mode. */
> +static inline int
> +dequeue_dec_one_op_tb(struct acc100_queue *q, struct rte_bbdev_dec_op
> **ref_op,
> +               uint16_t dequeued_cbs, uint32_t *aq_dequeued)
> +{
> +       union acc100_dma_desc *desc, *last_desc, atom_desc;
> +       union acc100_dma_rsp_desc rsp;
> +       struct rte_bbdev_dec_op *op;
> +       uint8_t cbs_in_tb = 1, cb_idx = 0;
> +
> +       desc = q->ring_addr + ((q->sw_ring_tail + dequeued_cbs)
> +                       & q->sw_ring_wrap_mask);
> +       atom_desc.atom_hdr = __atomic_load_n((uint64_t *)desc,
> +                       __ATOMIC_RELAXED);
> +
> +       /* Check fdone bit */
> +       if (!(atom_desc.rsp.val & ACC100_FDONE))
> +               return -1;
> +
> +       /* Dequeue */
> +       op = desc->req.op_addr;
> +
> +       /* Get number of CBs in dequeued TB */
> +       cbs_in_tb = desc->req.cbs_in_tb;
> +       /* Get last CB */
> +       last_desc = q->ring_addr + ((q->sw_ring_tail
> +                       + dequeued_cbs + cbs_in_tb - 1)
> +                       & q->sw_ring_wrap_mask);
> +       /* Check if last CB in TB is ready to dequeue (and thus
> +        * the whole TB) - checking sdone bit. If not return.
> +        */
> +       atom_desc.atom_hdr = __atomic_load_n((uint64_t *)last_desc,
> +                       __ATOMIC_RELAXED);
> +       if (!(atom_desc.rsp.val & ACC100_SDONE))
> +               return -1;
> +
> +       /* Clearing status, it will be set based on response */
> +       op->status = 0;
> +
> +       /* Read remaining CBs if exists */
> +       while (cb_idx < cbs_in_tb) {
> +               desc = q->ring_addr + ((q->sw_ring_tail + dequeued_cbs)
> +                               & q->sw_ring_wrap_mask);
> +               atom_desc.atom_hdr = __atomic_load_n((uint64_t *)desc,
> +                               __ATOMIC_RELAXED);
> +               rsp.val = atom_desc.rsp.val;
> +               rte_bbdev_log_debug("Resp. desc %p: %x", desc,
> +                               rsp.val);
> +
> +               op->status |= ((rsp.input_err)
> +                               ? (1 << RTE_BBDEV_DATA_ERROR) : 0);
> +               op->status |= ((rsp.dma_err) ? (1 << RTE_BBDEV_DRV_ERROR) : 0);
> +               op->status |= ((rsp.fcw_err) ? (1 << RTE_BBDEV_DRV_ERROR) : 0);
> +
> +               /* CRC invalid if error exists */
> +               if (!op->status)
> +                       op->status |= rsp.crc_status << RTE_BBDEV_CRC_ERROR;
> +               op->turbo_dec.iter_count = RTE_MAX((uint8_t) rsp.iter_cnt,
> +                               op->turbo_dec.iter_count);
> +
> +               /* Check if this is the last desc in batch (Atomic Queue) */
> +               if (desc->req.last_desc_in_batch) {
> +                       (*aq_dequeued)++;
> +                       desc->req.last_desc_in_batch = 0;
> +               }
> +               desc->rsp.val = ACC100_DMA_DESC_TYPE;
> +               desc->rsp.add_info_0 = 0;
> +               desc->rsp.add_info_1 = 0;
> +               dequeued_cbs++;
> +               cb_idx++;
> +       }
> +
> +       *ref_op = op;
> +
> +       return cb_idx;
> +}
> +
> +/* Dequeue LDPC encode operations from ACC100 device. */
> +static uint16_t
> +acc100_dequeue_ldpc_enc(struct rte_bbdev_queue_data *q_data,
> +               struct rte_bbdev_enc_op **ops, uint16_t num)
> +{
> +       struct acc100_queue *q = q_data->queue_private;
> +       uint32_t avail = q->sw_ring_head - q->sw_ring_tail;
> +       uint32_t aq_dequeued = 0;
> +       uint16_t dequeue_num, i, dequeued_cbs = 0, dequeued_descs = 0;
> +       int ret;
> +
> +#ifdef RTE_LIBRTE_BBDEV_DEBUG
> +       if (unlikely(ops == 0 && q == NULL))
> +               return 0;
> +#endif
> +
> +       dequeue_num = (avail < num) ? avail : num;
> +
> +       for (i = 0; i < dequeue_num; i++) {
> +               ret = dequeue_enc_one_op_cb(q, &ops[dequeued_cbs],
> +                               dequeued_descs, &aq_dequeued);
> +               if (ret < 0)
> +                       break;
> +               dequeued_cbs += ret;
> +               dequeued_descs++;
> +               if (dequeued_cbs >= num)
> +                       break;
> +       }
> +
> +       q->aq_dequeued += aq_dequeued;
> +       q->sw_ring_tail += dequeued_descs;
> +
> +       /* Update enqueue stats */
> +       q_data->queue_stats.dequeued_count += dequeued_cbs;
> +
> +       return dequeued_cbs;
> +}
> +
> +/* Dequeue decode operations from ACC100 device. */
> +static uint16_t
> +acc100_dequeue_ldpc_dec(struct rte_bbdev_queue_data *q_data,
> +               struct rte_bbdev_dec_op **ops, uint16_t num)
> +{
> +       struct acc100_queue *q = q_data->queue_private;
> +       uint16_t dequeue_num;
> +       uint32_t avail = q->sw_ring_head - q->sw_ring_tail;
> +       uint32_t aq_dequeued = 0;
> +       uint16_t i;
> +       uint16_t dequeued_cbs = 0;
> +       struct rte_bbdev_dec_op *op;
> +       int ret;
> +
> +#ifdef RTE_LIBRTE_BBDEV_DEBUG
> +       if (unlikely(ops == 0 && q == NULL))
> +               return 0;
> +#endif
> +
> +       dequeue_num = (avail < num) ? avail : num;
> +
> +       for (i = 0; i < dequeue_num; ++i) {
> +               op = (q->ring_addr + ((q->sw_ring_tail + dequeued_cbs)
> +                       & q->sw_ring_wrap_mask))->req.op_addr;
> +               if (op->ldpc_dec.code_block_mode == 0)
> +                       ret = dequeue_dec_one_op_tb(q, &ops[i], dequeued_cbs,
> +                                       &aq_dequeued);
> +               else
> +                       ret = dequeue_ldpc_dec_one_op_cb(
> +                                       q_data, q, &ops[i], dequeued_cbs,
> +                                       &aq_dequeued);
> +
> +               if (ret < 0)
> +                       break;
> +               dequeued_cbs += ret;
> +       }
> +
> +       q->aq_dequeued += aq_dequeued;
> +       q->sw_ring_tail += dequeued_cbs;
> +
> +       /* Update enqueue stats */
> +       q_data->queue_stats.dequeued_count += i;
> +
> +       return i;
> +}
> +
>  /* Initialization Function */
>  static void
>  acc100_bbdev_init(struct rte_bbdev *dev, struct rte_pci_driver *drv)
> @@ -703,6 +2321,10 @@
>          struct rte_pci_device *pci_dev = RTE_DEV_TO_PCI(dev->device);
> 
>          dev->dev_ops = &acc100_bbdev_ops;
> +       dev->enqueue_ldpc_enc_ops = acc100_enqueue_ldpc_enc;
> +       dev->enqueue_ldpc_dec_ops = acc100_enqueue_ldpc_dec;
> +       dev->dequeue_ldpc_enc_ops = acc100_dequeue_ldpc_enc;
> +       dev->dequeue_ldpc_dec_ops = acc100_dequeue_ldpc_dec;
> 
>          ((struct acc100_device *) dev->data->dev_private)->pf_device =
>                          !strcmp(drv->driver.name,
> @@ -815,4 +2437,3 @@ static int acc100_pci_remove(struct rte_pci_device
> *pci_dev)
>  RTE_PMD_REGISTER_PCI_TABLE(ACC100PF_DRIVER_NAME,
> pci_id_acc100_pf_map);
>  RTE_PMD_REGISTER_PCI(ACC100VF_DRIVER_NAME, acc100_pci_vf_driver);
>  RTE_PMD_REGISTER_PCI_TABLE(ACC100VF_DRIVER_NAME,
> pci_id_acc100_vf_map);
> -
> diff --git a/drivers/baseband/acc100/rte_acc100_pmd.h
> b/drivers/baseband/acc100/rte_acc100_pmd.h
> index 0e2b79c..78686c1 100644
> --- a/drivers/baseband/acc100/rte_acc100_pmd.h
> +++ b/drivers/baseband/acc100/rte_acc100_pmd.h
> @@ -88,6 +88,8 @@
>  #define TMPL_PRI_3      0x0f0e0d0c
>  #define QUEUE_ENABLE    0x80000000  /* Bit to mark Queue as Enabled */
>  #define WORDS_IN_ARAM_SIZE (128 * 1024 / 4)
> +#define ACC100_FDONE    0x80000000
> +#define ACC100_SDONE    0x40000000
> 
>  #define ACC100_NUM_TMPL  32
>  #define VF_OFFSET_QOS 16 /* offset in Memory Space specific to QoS Mon */
> @@ -398,6 +400,7 @@ struct __rte_packed acc100_dma_req_desc {
>  union acc100_dma_desc {
>          struct acc100_dma_req_desc req;
>          union acc100_dma_rsp_desc rsp;
> +       uint64_t atom_hdr;
>  };
> 
> 
> --
> 1.8.3.1