[dpdk-dev] [PATCH v3 5/5] dma/cnxk: add stats function

[Radha Mohan Chintakuntla]

Add the stats function to get the DMA statistics.

Signed-off-by: Radha Mohan Chintakuntla <rad...@marvell.com>
---
 drivers/dma/cnxk/cnxk_dmadev.c | 41 ++++++++++++++++++++++++++++++++--
 drivers/dma/cnxk/cnxk_dmadev.h |  1 +
 2 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/drivers/dma/cnxk/cnxk_dmadev.c b/drivers/dma/cnxk/cnxk_dmadev.c
index 360e92f7ce..2824c1b44f 100644
--- a/drivers/dma/cnxk/cnxk_dmadev.c
+++ b/drivers/dma/cnxk/cnxk_dmadev.c
@@ -271,6 +271,7 @@ cnxk_dmadev_copy(void *dev_private, uint16_t vchan, 
rte_iova_t src,
                        rte_wmb();
                        plt_write64(num_words,
                                    dpivf->rdpi.rbase + DPI_VDMA_DBELL);
+                       dpivf->stats.submitted++;
                }
                dpivf->num_words += num_words;
        }
@@ -336,6 +337,7 @@ cnxk_dmadev_copy_sg(void *dev_private, uint16_t vchan,
                        rte_wmb();
                        plt_write64(num_words,
                                    dpivf->rdpi.rbase + DPI_VDMA_DBELL);
+                       dpivf->stats.submitted += nb_src;
                }
                dpivf->num_words += num_words;
        }
@@ -357,12 +359,14 @@ cnxk_dmadev_completed(void *dev_private, uint16_t vchan, 
const uint16_t nb_cpls,
 
                if (comp_ptr->cdata) {
                        *has_error = 1;
+                       dpivf->stats.errors++;
                        break;
                }
        }
 
        *last_idx = cnt - 1;
        dpivf->conf.c_desc.tail = cnt;
+       dpivf->stats.completed += cnt;
 
        return cnt;
 }
@@ -381,10 +385,13 @@ cnxk_dmadev_completed_status(void *dev_private, uint16_t 
vchan,
                struct cnxk_dpi_compl_s *comp_ptr =
                        dpivf->conf.c_desc.compl_ptr[cnt];
                status[cnt] = comp_ptr->cdata;
+               if (comp_ptr->cdata)
+                       dpivf->stats.errors++;
        }
 
        *last_idx = cnt - 1;
        dpivf->conf.c_desc.tail = 0;
+       dpivf->stats.completed += cnt;
 
        return cnt;
 }
@@ -396,17 +403,47 @@ cnxk_dmadev_submit(void *dev_private, uint16_t vchan 
__rte_unused)
 
        rte_wmb();
        plt_write64(dpivf->num_words, dpivf->rdpi.rbase + DPI_VDMA_DBELL);
+       dpivf->stats.submitted++;
 
        return 0;
 }
 
+static int
+cnxk_stats_get(const struct rte_dma_dev *dev, uint16_t vchan,
+              struct rte_dma_stats *rte_stats, uint32_t size)
+{
+       struct cnxk_dpi_vf_s *dpivf = dev->fp_obj->dev_private;
+       struct rte_dma_stats *stats = &dpivf->stats;
+
+       RTE_SET_USED(vchan);
+
+       if (size < sizeof(rte_stats))
+               return -EINVAL;
+       if (rte_stats == NULL)
+               return -EINVAL;
+
+       *rte_stats = *stats;
+       return 0;
+}
+
+static int
+cnxk_stats_reset(struct rte_dma_dev *dev, uint16_t vchan __rte_unused)
+{
+       struct cnxk_dpi_vf_s *dpivf = dev->fp_obj->dev_private;
+
+       dpivf->stats = (struct rte_dma_stats){0};
+       return 0;
+}
+
 static const struct rte_dma_dev_ops cnxk_dmadev_ops = {
-       .dev_info_get = cnxk_dmadev_info_get,
+       .dev_close = cnxk_dmadev_close,
        .dev_configure = cnxk_dmadev_configure,
+       .dev_info_get = cnxk_dmadev_info_get,
        .dev_start = cnxk_dmadev_start,
        .dev_stop = cnxk_dmadev_stop,
+       .stats_get = cnxk_stats_get,
+       .stats_reset = cnxk_stats_reset,
        .vchan_setup = cnxk_dmadev_vchan_setup,
-       .dev_close = cnxk_dmadev_close,
 };
 
 static int
diff --git a/drivers/dma/cnxk/cnxk_dmadev.h b/drivers/dma/cnxk/cnxk_dmadev.h
index eb94ff8ec7..5fc241b55e 100644
--- a/drivers/dma/cnxk/cnxk_dmadev.h
+++ b/drivers/dma/cnxk/cnxk_dmadev.h
@@ -35,6 +35,7 @@ struct cnxk_dpi_conf {
 struct cnxk_dpi_vf_s {
        struct roc_dpi rdpi;
        struct cnxk_dpi_conf conf;
+       struct rte_dma_stats stats;
        uint64_t cmd[DPI_MAX_CMD_SIZE];
        uint32_t num_words;
        uint16_t desc_idx;
-- 
2.17.1