From: Pavan Nikhilesh <pbhagavat...@marvell.com>

Implement DMA enqueue/dequeue operations when
application enables it via configuration.

Signed-off-by: Pavan Nikhilesh <pbhagavat...@marvell.com>
---
 drivers/dma/cnxk/cnxk_dmadev.c    |  78 ++++++++----
 drivers/dma/cnxk/cnxk_dmadev.h    |   7 ++
 drivers/dma/cnxk/cnxk_dmadev_fp.c | 189 ++++++++++++++++++++++++++----
 3 files changed, 232 insertions(+), 42 deletions(-)

diff --git a/drivers/dma/cnxk/cnxk_dmadev.c b/drivers/dma/cnxk/cnxk_dmadev.c
index 90bb69011f..f12a15aef7 100644
--- a/drivers/dma/cnxk/cnxk_dmadev.c
+++ b/drivers/dma/cnxk/cnxk_dmadev.c
@@ -7,6 +7,7 @@
 #include <cnxk_dmadev.h>
 
 static int cnxk_stats_reset(struct rte_dma_dev *dev, uint16_t vchan);
+static void cnxk_set_fp_ops(struct rte_dma_dev *dev, uint8_t enable_enq_deq);
 
 static int
 cnxk_dmadev_info_get(const struct rte_dma_dev *dev, struct rte_dma_info 
*dev_info, uint32_t size)
@@ -19,7 +20,7 @@ cnxk_dmadev_info_get(const struct rte_dma_dev *dev, struct 
rte_dma_info *dev_inf
        dev_info->dev_capa = RTE_DMA_CAPA_MEM_TO_MEM | RTE_DMA_CAPA_MEM_TO_DEV |
                             RTE_DMA_CAPA_DEV_TO_MEM | RTE_DMA_CAPA_DEV_TO_DEV |
                             RTE_DMA_CAPA_OPS_COPY | RTE_DMA_CAPA_OPS_COPY_SG |
-                            RTE_DMA_CAPA_M2D_AUTO_FREE;
+                            RTE_DMA_CAPA_M2D_AUTO_FREE | 
RTE_DMA_CAPA_OPS_ENQ_DEQ;
        if (roc_feature_dpi_has_priority()) {
                dev_info->dev_capa |= RTE_DMA_CAPA_PRI_POLICY_SP;
                dev_info->nb_priorities = CN10K_DPI_MAX_PRI;
@@ -114,6 +115,8 @@ cnxk_dmadev_configure(struct rte_dma_dev *dev, const struct 
rte_dma_conf *conf,
        if (roc_feature_dpi_has_priority())
                dpivf->rdpi.priority = conf->priority;
 
+       cnxk_set_fp_ops(dev, conf->flags & RTE_DMA_CFG_FLAG_ENQ_DEQ);
+
        return 0;
 }
 
@@ -270,6 +273,14 @@ cnxk_dmadev_vchan_setup(struct rte_dma_dev *dev, uint16_t 
vchan,
                return -ENOMEM;
        }
 
+       size = (max_desc * sizeof(struct rte_dma_op *));
+       dpi_conf->c_desc.ops = rte_zmalloc(NULL, size, RTE_CACHE_LINE_SIZE);
+       if (dpi_conf->c_desc.ops == NULL) {
+               plt_err("Failed to allocate for ops array");
+               rte_free(dpi_conf->c_desc.compl_ptr);
+               return -ENOMEM;
+       }
+
        for (i = 0; i < max_desc; i++)
                dpi_conf->c_desc.compl_ptr[i * CNXK_DPI_COMPL_OFFSET] = 
CNXK_DPI_REQ_CDATA;
 
@@ -382,23 +393,25 @@ cnxk_dmadev_completed(void *dev_private, uint16_t vchan, 
const uint16_t nb_cpls,
        struct cnxk_dpi_vf_s *dpivf = dev_private;
        struct cnxk_dpi_conf *dpi_conf = &dpivf->conf[vchan];
        struct cnxk_dpi_cdesc_data_s *c_desc = &dpi_conf->c_desc;
+       const uint16_t max_cnt = c_desc->max_cnt;
        uint8_t status;
        int cnt;
 
        for (cnt = 0; cnt < nb_cpls; cnt++) {
-               status = c_desc->compl_ptr[c_desc->head * 
CNXK_DPI_COMPL_OFFSET];
+               status = c_desc->compl_ptr[(c_desc->head & max_cnt) * 
CNXK_DPI_COMPL_OFFSET];
                if (status) {
                        if (status == CNXK_DPI_REQ_CDATA)
                                break;
                        *has_error = 1;
                        dpi_conf->stats.errors++;
-                       c_desc->compl_ptr[c_desc->head * CNXK_DPI_COMPL_OFFSET] 
=
+                       c_desc->compl_ptr[(c_desc->head & max_cnt) * 
CNXK_DPI_COMPL_OFFSET] =
                                CNXK_DPI_REQ_CDATA;
-                       CNXK_DPI_STRM_INC(*c_desc, head);
+                       c_desc->head++;
                        break;
                }
-               c_desc->compl_ptr[c_desc->head * CNXK_DPI_COMPL_OFFSET] = 
CNXK_DPI_REQ_CDATA;
-               CNXK_DPI_STRM_INC(*c_desc, head);
+               c_desc->compl_ptr[(c_desc->head & max_cnt) * 
CNXK_DPI_COMPL_OFFSET] =
+                       CNXK_DPI_REQ_CDATA;
+               c_desc->head++;
        }
 
        dpi_conf->stats.completed += cnt;
@@ -414,18 +427,20 @@ cnxk_dmadev_completed_status(void *dev_private, uint16_t 
vchan, const uint16_t n
        struct cnxk_dpi_vf_s *dpivf = dev_private;
        struct cnxk_dpi_conf *dpi_conf = &dpivf->conf[vchan];
        struct cnxk_dpi_cdesc_data_s *c_desc = &dpi_conf->c_desc;
+       const uint16_t max_cnt = dpi_conf->c_desc.max_cnt;
        int cnt;
 
        for (cnt = 0; cnt < nb_cpls; cnt++) {
-               status[cnt] = c_desc->compl_ptr[c_desc->head * 
CNXK_DPI_COMPL_OFFSET];
+               status[cnt] = c_desc->compl_ptr[(c_desc->head & max_cnt) * 
CNXK_DPI_COMPL_OFFSET];
                if (status[cnt]) {
                        if (status[cnt] == CNXK_DPI_REQ_CDATA)
                                break;
 
                        dpi_conf->stats.errors++;
                }
-               c_desc->compl_ptr[c_desc->head * CNXK_DPI_COMPL_OFFSET] = 
CNXK_DPI_REQ_CDATA;
-               CNXK_DPI_STRM_INC(*c_desc, head);
+               c_desc->compl_ptr[(c_desc->head & max_cnt) * 
CNXK_DPI_COMPL_OFFSET] =
+                       CNXK_DPI_REQ_CDATA;
+               c_desc->head++;
        }
 
        dpi_conf->stats.completed += cnt;
@@ -528,6 +543,37 @@ cnxk_stats_reset(struct rte_dma_dev *dev, uint16_t vchan)
        return 0;
 }
 
+static void
+cnxk_set_fp_ops(struct rte_dma_dev *dev, uint8_t ena_enq_deq)
+{
+
+       dev->fp_obj->copy = cnxk_dmadev_copy;
+       dev->fp_obj->copy_sg = cnxk_dmadev_copy_sg;
+       dev->fp_obj->submit = cnxk_dmadev_submit;
+       dev->fp_obj->completed = cnxk_dmadev_completed;
+       dev->fp_obj->completed_status = cnxk_dmadev_completed_status;
+       dev->fp_obj->burst_capacity = cnxk_damdev_burst_capacity;
+
+       if (roc_model_is_cn10k()) {
+               dev->fp_obj->copy = cn10k_dmadev_copy;
+               dev->fp_obj->copy_sg = cn10k_dmadev_copy_sg;
+       }
+
+       if (ena_enq_deq) {
+               dev->fp_obj->copy = NULL;
+               dev->fp_obj->copy_sg = NULL;
+               dev->fp_obj->submit = NULL;
+               dev->fp_obj->completed = NULL;
+               dev->fp_obj->completed_status = NULL;
+
+               dev->fp_obj->enqueue = cnxk_dma_ops_enqueue;
+               dev->fp_obj->dequeue = cnxk_dma_ops_dequeue;
+
+               if (roc_model_is_cn10k())
+                       dev->fp_obj->enqueue = cn10k_dma_ops_enqueue;
+       }
+}
+
 static const struct rte_dma_dev_ops cnxk_dmadev_ops = {
        .dev_close = cnxk_dmadev_close,
        .dev_configure = cnxk_dmadev_configure,
@@ -571,19 +617,7 @@ cnxk_dmadev_probe(struct rte_pci_driver *pci_drv 
__rte_unused, struct rte_pci_de
        dmadev->fp_obj->dev_private = dpivf;
        dmadev->dev_ops = &cnxk_dmadev_ops;
 
-       dmadev->fp_obj->copy = cnxk_dmadev_copy;
-       dmadev->fp_obj->copy_sg = cnxk_dmadev_copy_sg;
-       dmadev->fp_obj->submit = cnxk_dmadev_submit;
-       dmadev->fp_obj->completed = cnxk_dmadev_completed;
-       dmadev->fp_obj->completed_status = cnxk_dmadev_completed_status;
-       dmadev->fp_obj->burst_capacity = cnxk_damdev_burst_capacity;
-
-       if (roc_model_is_cn10k()) {
-               dpivf->is_cn10k = true;
-               dmadev->fp_obj->copy = cn10k_dmadev_copy;
-               dmadev->fp_obj->copy_sg = cn10k_dmadev_copy_sg;
-       }
-
+       dpivf->is_cn10k = roc_model_is_cn10k();
        dpivf->mcs_lock = NULL;
        rdpi = &dpivf->rdpi;
 
diff --git a/drivers/dma/cnxk/cnxk_dmadev.h b/drivers/dma/cnxk/cnxk_dmadev.h
index 9a232a5464..18039e43fb 100644
--- a/drivers/dma/cnxk/cnxk_dmadev.h
+++ b/drivers/dma/cnxk/cnxk_dmadev.h
@@ -93,6 +93,7 @@ struct cnxk_dpi_cdesc_data_s {
        uint16_t head;
        uint16_t tail;
        uint8_t *compl_ptr;
+       struct rte_dma_op **ops;
 };
 
 struct cnxk_dpi_conf {
@@ -131,5 +132,11 @@ int cn10k_dmadev_copy(void *dev_private, uint16_t vchan, 
rte_iova_t src, rte_iov
 int cn10k_dmadev_copy_sg(void *dev_private, uint16_t vchan, const struct 
rte_dma_sge *src,
                         const struct rte_dma_sge *dst, uint16_t nb_src, 
uint16_t nb_dst,
                         uint64_t flags);
+uint16_t cnxk_dma_ops_enqueue(void *dev_private, uint16_t vchan, struct 
rte_dma_op **ops,
+                             uint16_t nb_ops);
+uint16_t cn10k_dma_ops_enqueue(void *dev_private, uint16_t vchan, struct 
rte_dma_op **ops,
+                              uint16_t nb_ops);
+uint16_t cnxk_dma_ops_dequeue(void *dev_private, uint16_t vchan, struct 
rte_dma_op **ops,
+                             uint16_t nb_ops);
 
 #endif
diff --git a/drivers/dma/cnxk/cnxk_dmadev_fp.c 
b/drivers/dma/cnxk/cnxk_dmadev_fp.c
index dea73c5b41..579aafa894 100644
--- a/drivers/dma/cnxk/cnxk_dmadev_fp.c
+++ b/drivers/dma/cnxk/cnxk_dmadev_fp.c
@@ -246,15 +246,16 @@ cnxk_dmadev_copy(void *dev_private, uint16_t vchan, 
rte_iova_t src, rte_iova_t d
        struct cnxk_dpi_vf_s *dpivf = dev_private;
        struct cnxk_dpi_conf *dpi_conf = &dpivf->conf[vchan];
        uint64_t cmd[CNXK_DPI_DW_PER_SINGLE_CMD];
+       const uint16_t max_cnt = dpi_conf->c_desc.max_cnt;
        uint8_t *comp_ptr;
        int rc;
 
-       if (unlikely(((dpi_conf->c_desc.tail + 1) & dpi_conf->c_desc.max_cnt) ==
-                    dpi_conf->c_desc.head))
+       if (unlikely(((dpi_conf->c_desc.tail + 1) & max_cnt) == 
(dpi_conf->c_desc.head & max_cnt)))
                return -ENOSPC;
 
-       comp_ptr = &dpi_conf->c_desc.compl_ptr[dpi_conf->c_desc.tail * 
CNXK_DPI_COMPL_OFFSET];
-       CNXK_DPI_STRM_INC(dpi_conf->c_desc, tail);
+       comp_ptr = &dpi_conf->c_desc
+                           .compl_ptr[(dpi_conf->c_desc.tail & max_cnt) * 
CNXK_DPI_COMPL_OFFSET];
+       dpi_conf->c_desc.tail++;
 
        cmd[0] = (1UL << 54) | (1UL << 48);
        cmd[1] = dpi_conf->cmd.u | ((flags & RTE_DMA_OP_FLAG_AUTO_FREE) << 37);
@@ -276,7 +277,7 @@ cnxk_dmadev_copy(void *dev_private, uint16_t vchan, 
rte_iova_t src, rte_iova_t d
 
        rc = __dpi_queue_write_single(dpivf, cmd);
        if (unlikely(rc)) {
-               CNXK_DPI_STRM_DEC(dpi_conf->c_desc, tail);
+               dpi_conf->c_desc.tail--;
                return rc;
        }
 
@@ -300,17 +301,18 @@ cnxk_dmadev_copy_sg(void *dev_private, uint16_t vchan, 
const struct rte_dma_sge
 {
        struct cnxk_dpi_vf_s *dpivf = dev_private;
        struct cnxk_dpi_conf *dpi_conf = &dpivf->conf[vchan];
+       const uint16_t max_cnt = dpi_conf->c_desc.max_cnt;
        const struct rte_dma_sge *fptr, *lptr;
        uint8_t *comp_ptr;
        uint64_t hdr[4];
        int rc;
 
-       if (unlikely(((dpi_conf->c_desc.tail + 1) & dpi_conf->c_desc.max_cnt) ==
-                    dpi_conf->c_desc.head))
+       if (unlikely(((dpi_conf->c_desc.tail + 1) & max_cnt) == 
(dpi_conf->c_desc.head & max_cnt)))
                return -ENOSPC;
 
-       comp_ptr = &dpi_conf->c_desc.compl_ptr[dpi_conf->c_desc.tail * 
CNXK_DPI_COMPL_OFFSET];
-       CNXK_DPI_STRM_INC(dpi_conf->c_desc, tail);
+       comp_ptr = &dpi_conf->c_desc
+                           .compl_ptr[(dpi_conf->c_desc.tail & max_cnt) * 
CNXK_DPI_COMPL_OFFSET];
+       dpi_conf->c_desc.tail++;
 
        hdr[1] = dpi_conf->cmd.u | ((flags & RTE_DMA_OP_FLAG_AUTO_FREE) << 37);
        hdr[2] = (uint64_t)comp_ptr;
@@ -331,7 +333,7 @@ cnxk_dmadev_copy_sg(void *dev_private, uint16_t vchan, 
const struct rte_dma_sge
 
        rc = __dpi_queue_write_sg(dpivf, hdr, fptr, lptr, nb_src, nb_dst);
        if (unlikely(rc)) {
-               CNXK_DPI_STRM_DEC(dpi_conf->c_desc, tail);
+               dpi_conf->c_desc.tail--;
                return rc;
        }
 
@@ -355,16 +357,17 @@ cn10k_dmadev_copy(void *dev_private, uint16_t vchan, 
rte_iova_t src, rte_iova_t
 {
        struct cnxk_dpi_vf_s *dpivf = dev_private;
        struct cnxk_dpi_conf *dpi_conf = &dpivf->conf[vchan];
+       const uint16_t max_cnt = dpi_conf->c_desc.max_cnt;
        uint64_t cmd[CNXK_DPI_DW_PER_SINGLE_CMD];
        uint8_t *comp_ptr;
        int rc;
 
-       if (unlikely(((dpi_conf->c_desc.tail + 1) & dpi_conf->c_desc.max_cnt) ==
-                    dpi_conf->c_desc.head))
+       if (unlikely(((dpi_conf->c_desc.tail + 1) & max_cnt) == 
(dpi_conf->c_desc.head & max_cnt)))
                return -ENOSPC;
 
-       comp_ptr = &dpi_conf->c_desc.compl_ptr[dpi_conf->c_desc.tail * 
CNXK_DPI_COMPL_OFFSET];
-       CNXK_DPI_STRM_INC(dpi_conf->c_desc, tail);
+       comp_ptr = &dpi_conf->c_desc
+                           .compl_ptr[(dpi_conf->c_desc.tail & max_cnt) * 
CNXK_DPI_COMPL_OFFSET];
+       dpi_conf->c_desc.tail++;
 
        cmd[0] = dpi_conf->cmd.u | (1U << 6) | 1U;
        cmd[1] = (uint64_t)comp_ptr;
@@ -376,7 +379,7 @@ cn10k_dmadev_copy(void *dev_private, uint16_t vchan, 
rte_iova_t src, rte_iova_t
 
        rc = __dpi_queue_write_single(dpivf, cmd);
        if (unlikely(rc)) {
-               CNXK_DPI_STRM_DEC(dpi_conf->c_desc, tail);
+               dpi_conf->c_desc.tail--;
                return rc;
        }
 
@@ -401,16 +404,17 @@ cn10k_dmadev_copy_sg(void *dev_private, uint16_t vchan, 
const struct rte_dma_sge
 {
        struct cnxk_dpi_vf_s *dpivf = dev_private;
        struct cnxk_dpi_conf *dpi_conf = &dpivf->conf[vchan];
+       const uint16_t max_cnt = dpi_conf->c_desc.max_cnt;
        uint8_t *comp_ptr;
        uint64_t hdr[4];
        int rc;
 
-       if (unlikely(((dpi_conf->c_desc.tail + 1) & dpi_conf->c_desc.max_cnt) ==
-                    dpi_conf->c_desc.head))
+       if (unlikely(((dpi_conf->c_desc.tail + 1) & max_cnt) == 
(dpi_conf->c_desc.head & max_cnt)))
                return -ENOSPC;
 
-       comp_ptr = &dpi_conf->c_desc.compl_ptr[dpi_conf->c_desc.tail * 
CNXK_DPI_COMPL_OFFSET];
-       CNXK_DPI_STRM_INC(dpi_conf->c_desc, tail);
+       comp_ptr = &dpi_conf->c_desc
+                           .compl_ptr[(dpi_conf->c_desc.tail & max_cnt) * 
CNXK_DPI_COMPL_OFFSET];
+       dpi_conf->c_desc.tail++;
 
        hdr[0] = dpi_conf->cmd.u | (nb_dst << 6) | nb_src;
        hdr[1] = (uint64_t)comp_ptr;
@@ -418,7 +422,7 @@ cn10k_dmadev_copy_sg(void *dev_private, uint16_t vchan, 
const struct rte_dma_sge
 
        rc = __dpi_queue_write_sg(dpivf, hdr, src, dst, nb_src, nb_dst);
        if (unlikely(rc)) {
-               CNXK_DPI_STRM_DEC(dpi_conf->c_desc, tail);
+               dpi_conf->c_desc.tail--;
                return rc;
        }
 
@@ -670,3 +674,148 @@ cnxk_dma_adapter_dequeue(uintptr_t get_work1)
 
        return (uintptr_t)op;
 }
+
+uint16_t
+cnxk_dma_ops_enqueue(void *dev_private, uint16_t vchan, struct rte_dma_op 
**ops, uint16_t nb_ops)
+{
+       struct cnxk_dpi_vf_s *dpivf = dev_private;
+       struct cnxk_dpi_conf *dpi_conf = &dpivf->conf[vchan];
+       const uint16_t max_cnt = dpi_conf->c_desc.max_cnt;
+       const struct rte_dma_sge *fptr, *lptr;
+       uint16_t src, dst, nwords = 0;
+       struct rte_dma_op *op;
+       uint16_t space, i;
+       uint8_t *comp_ptr;
+       uint64_t hdr[4];
+       int rc;
+
+       space = ((dpi_conf->c_desc.max_cnt + dpi_conf->c_desc.head - 
dpi_conf->c_desc.tail) &
+                max_cnt);
+       space = RTE_MIN(space, nb_ops);
+
+       for (i = 0; i < space; i++) {
+               op = ops[i];
+               comp_ptr = &dpi_conf->c_desc.compl_ptr[(dpi_conf->c_desc.tail & 
max_cnt) *
+                                                      CNXK_DPI_COMPL_OFFSET];
+               dpi_conf->c_desc.ops[dpi_conf->c_desc.tail & max_cnt] = op;
+               dpi_conf->c_desc.tail++;
+
+               hdr[1] = dpi_conf->cmd.u | ((op->flags & 
RTE_DMA_OP_FLAG_AUTO_FREE) << 37);
+               hdr[2] = (uint64_t)comp_ptr;
+
+               src = op->nb_src;
+               dst = op->nb_dst;
+               /*
+                * For inbound case, src pointers are last pointers.
+                * For all other cases, src pointers are first pointers.
+                */
+               if (((dpi_conf->cmd.u >> 48) & DPI_HDR_XTYPE_MASK) == 
DPI_XTYPE_INBOUND) {
+                       fptr = &op->src_dst_seg[src];
+                       lptr = &op->src_dst_seg[0];
+                       RTE_SWAP(src, dst);
+               } else {
+                       fptr = &op->src_dst_seg[0];
+                       lptr = &op->src_dst_seg[src];
+               }
+               hdr[0] = ((uint64_t)dst << 54) | (uint64_t)src << 48;
+
+               rc = __dpi_queue_write_sg(dpivf, hdr, fptr, lptr, src, dst);
+               if (rc) {
+                       dpi_conf->c_desc.tail--;
+                       goto done;
+               }
+               nwords += CNXK_DPI_CMD_LEN(src, dst);
+       }
+
+done:
+       if (nwords) {
+               rte_wmb();
+               plt_write64(nwords, dpivf->rdpi.rbase + DPI_VDMA_DBELL);
+               dpi_conf->stats.submitted += i;
+       }
+
+       return i;
+}
+
+uint16_t
+cn10k_dma_ops_enqueue(void *dev_private, uint16_t vchan, struct rte_dma_op 
**ops, uint16_t nb_ops)
+{
+       struct cnxk_dpi_vf_s *dpivf = dev_private;
+       struct cnxk_dpi_conf *dpi_conf = &dpivf->conf[vchan];
+       const uint16_t max_cnt = dpi_conf->c_desc.max_cnt;
+       uint16_t space, i, nwords = 0;
+       struct rte_dma_op *op;
+       uint16_t src, dst;
+       uint8_t *comp_ptr;
+       uint64_t hdr[4];
+       int rc;
+
+       space = (max_cnt + dpi_conf->c_desc.head - dpi_conf->c_desc.tail) & 
max_cnt;
+       space = RTE_MIN(space, nb_ops);
+
+       for (i = 0; i < space; i++) {
+               op = ops[i];
+               src = op->nb_src;
+               dst = op->nb_dst;
+
+               comp_ptr = &dpi_conf->c_desc.compl_ptr[(dpi_conf->c_desc.tail & 
max_cnt) *
+                                                      CNXK_DPI_COMPL_OFFSET];
+               dpi_conf->c_desc.ops[dpi_conf->c_desc.tail & max_cnt] = op;
+               dpi_conf->c_desc.tail++;
+
+               hdr[0] = dpi_conf->cmd.u | (dst << 6) | src;
+               hdr[1] = (uint64_t)comp_ptr;
+               hdr[2] = (1UL << 47) | ((op->flags & RTE_DMA_OP_FLAG_AUTO_FREE) 
<< 43);
+
+               rc = __dpi_queue_write_sg(dpivf, hdr, &op->src_dst_seg[0], 
&op->src_dst_seg[src],
+                                         src, dst);
+               if (rc) {
+                       dpi_conf->c_desc.tail--;
+                       goto done;
+               }
+               nwords += CNXK_DPI_CMD_LEN(src, dst);
+       }
+
+done:
+       if (nwords) {
+               rte_wmb();
+               plt_write64(nwords, dpivf->rdpi.rbase + DPI_VDMA_DBELL);
+               dpi_conf->stats.submitted += i;
+       }
+
+       return i;
+}
+
+uint16_t
+cnxk_dma_ops_dequeue(void *dev_private, uint16_t vchan, struct rte_dma_op 
**ops, uint16_t nb_ops)
+{
+       struct cnxk_dpi_vf_s *dpivf = dev_private;
+       struct cnxk_dpi_conf *dpi_conf = &dpivf->conf[vchan];
+       struct cnxk_dpi_cdesc_data_s *c_desc = &dpi_conf->c_desc;
+       const uint16_t max_cnt = c_desc->max_cnt;
+       struct rte_dma_op *op;
+       uint16_t space, cnt;
+       uint8_t status;
+
+       space = (c_desc->tail - c_desc->head) & max_cnt;
+       space = RTE_MIN(nb_ops, space);
+
+       for (cnt = 0; cnt < space; cnt++) {
+               status = c_desc->compl_ptr[(c_desc->head & max_cnt) * 
CNXK_DPI_COMPL_OFFSET];
+               op = c_desc->ops[c_desc->head & max_cnt];
+               if (status) {
+                       if (status == CNXK_DPI_REQ_CDATA)
+                               break;
+                       dpi_conf->stats.errors++;
+               }
+               op->status = status;
+               ops[cnt] = op;
+               c_desc->compl_ptr[(c_desc->head & max_cnt) * 
CNXK_DPI_COMPL_OFFSET] =
+                       CNXK_DPI_REQ_CDATA;
+               c_desc->head++;
+       }
+
+       dpi_conf->stats.completed += cnt;
+
+       return cnt;
+}
-- 
2.43.0

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