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baseband/acc100: support scatter-gather

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Add flag to support scatter-gather for the mbuf

Signed-off-by: Hernan Vargas <hernan.vargas@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Hernan Vargas 2022-10-20 22:20:49 -07:00 committed by Akhil Goyal
parent 103161cc93
commit f7613291d5
1 changed files with 25 additions and 13 deletions
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38
drivers/baseband/acc/rte_acc100_pmd.c
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@ -1364,6 +1364,8 @@ acc101_fcw_ld_fill(struct rte_bbdev_dec_op *op, struct acc_fcw_ld *fcw,
* Store information about device capabilities
* @param next_triplet
* Index for ACC100 DMA Descriptor triplet
* @param scattergather
* Flag to support scatter-gather for the mbuf
*
* @return
* Returns index of next triplet on success, other value if lengths of
@ -1373,12 +1375,16 @@ acc101_fcw_ld_fill(struct rte_bbdev_dec_op *op, struct acc_fcw_ld *fcw,
static inline int
acc100_dma_fill_blk_type_in(struct acc_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 *seg_total_left, int next_triplet,
bool scattergather)
{
uint32_t part_len;
struct rte_mbuf *m = *input;
part_len = (*seg_total_left < cb_len) ? *seg_total_left : cb_len;
if (scattergather)
part_len = (*seg_total_left < cb_len) ? *seg_total_left : cb_len;
else
part_len = cb_len;
cb_len -= part_len;
*seg_total_left -= part_len;
@ -1469,7 +1475,7 @@ acc100_dma_desc_le_fill(struct rte_bbdev_enc_op *op,
}
next_triplet = acc100_dma_fill_blk_type_in(desc, input, in_offset,
pad_le_in(in_length_in_bytes, q), seg_total_left, next_triplet);
pad_le_in(in_length_in_bytes, q), seg_total_left, next_triplet, false);
if (unlikely(next_triplet < 0)) {
rte_bbdev_log(ERR,
"Mismatch between data to process and mbuf data length in bbdev_op: %p",
@ -1557,7 +1563,9 @@ acc100_dma_desc_td_fill(struct rte_bbdev_dec_op *op,
}
next_triplet = acc100_dma_fill_blk_type_in(desc, input, in_offset, kw,
seg_total_left, next_triplet);
seg_total_left, next_triplet,
check_bit(op->turbo_dec.op_flags,
RTE_BBDEV_TURBO_DEC_SCATTER_GATHER));
if (unlikely(next_triplet < 0)) {
rte_bbdev_log(ERR,
"Mismatch between data to process and mbuf data length in bbdev_op: %p",
@ -1659,7 +1667,9 @@ acc100_dma_desc_ld_fill(struct rte_bbdev_dec_op *op,
next_triplet = acc100_dma_fill_blk_type_in(desc, input,
in_offset, input_length,
seg_total_left, next_triplet);
seg_total_left, next_triplet,
check_bit(op->ldpc_dec.op_flags,
RTE_BBDEV_LDPC_DEC_SCATTER_GATHER));
if (unlikely(next_triplet < 0)) {
rte_bbdev_log(ERR,
@ -2727,10 +2737,9 @@ enqueue_ldpc_dec_one_op_cb(struct acc_queue *q, struct rte_bbdev_dec_op *op,
fcw = &desc->req.fcw_ld;
q->d->fcw_ld_fill(op, fcw, harq_layout);
/* Special handling when overusing mbuf */
if (fcw->rm_e < ACC_MAX_E_MBUF)
seg_total_left = rte_pktmbuf_data_len(input)
- in_offset;
/* Special handling when using mbuf or not */
if (check_bit(op->ldpc_dec.op_flags, RTE_BBDEV_LDPC_DEC_SCATTER_GATHER))
seg_total_left = rte_pktmbuf_data_len(input) - in_offset;
else
seg_total_left = fcw->rm_e;
@ -2805,9 +2814,10 @@ enqueue_ldpc_dec_one_op_tb(struct acc_queue *q, struct rte_bbdev_dec_op *op,
r = op->ldpc_dec.tb_params.r;
while (mbuf_total_left > 0 && r < c) {
seg_total_left = rte_pktmbuf_data_len(input) - in_offset;
if (check_bit(op->ldpc_dec.op_flags, RTE_BBDEV_LDPC_DEC_SCATTER_GATHER))
seg_total_left = rte_pktmbuf_data_len(input) - in_offset;
else
seg_total_left = op->ldpc_dec.input.length;
/* Set up DMA descriptor */
desc = acc_desc(q, total_enqueued_cbs);
desc->req.data_ptrs[0].address = q->ring_addr_iova + fcw_offset;
@ -2832,7 +2842,9 @@ enqueue_ldpc_dec_one_op_tb(struct acc_queue *q, struct rte_bbdev_dec_op *op,
rte_memdump(stderr, "Req Desc.", desc, sizeof(*desc));
#endif
if (seg_total_left == 0) {
if (check_bit(op->ldpc_dec.op_flags,
RTE_BBDEV_LDPC_DEC_SCATTER_GATHER)
&& (seg_total_left == 0)) {
/* Go to the next mbuf */
input = input->next;
in_offset = 0;