dma/hisilicon: support vchan status query

This patch adds support for vchan-status ops.

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>

diff --git a/drivers/dma/hisilicon/hisi_dmadev.c b/drivers/dma/hisilicon/hisi_dmadev.c
index fbe09284ed70f1a6ee76485889d74a16e28184b9..9494b607799d9fc8207d62a595c916d0b1980417 100644 (file)
--- a/drivers/dma/hisilicon/hisi_dmadev.c
+++ b/drivers/dma/hisilicon/hisi_dmadev.c
@@ -461,6 +461,27 @@ hisi_dma_stats_reset(struct rte_dma_dev *dev, uint16_t vchan)
        return 0;
 }
 
+static int
+hisi_dma_vchan_status(const struct rte_dma_dev *dev, uint16_t vchan,
+                     enum rte_dma_vchan_status *status)
+{
+       struct hisi_dma_dev *hw = dev->data->dev_private;
+       uint32_t val;
+
+       RTE_SET_USED(vchan);
+
+       val = hisi_dma_read_queue(hw, HISI_DMA_QUEUE_FSM_REG);
+       val = FIELD_GET(HISI_DMA_QUEUE_FSM_STS_M, val);
+       if (val == HISI_DMA_STATE_RUN)
+               *status = RTE_DMA_VCHAN_ACTIVE;
+       else if (val == HISI_DMA_STATE_CPL)
+               *status = RTE_DMA_VCHAN_IDLE;
+       else
+               *status = RTE_DMA_VCHAN_HALTED_ERROR;
+
+       return 0;
+}
+
 static void
 hisi_dma_dump_range(struct hisi_dma_dev *hw, FILE *f, uint32_t start,
                    uint32_t end)
@@ -816,6 +837,14 @@ hisi_dma_gen_dev_name(const struct rte_pci_device *pci_dev,
  *                           dev_stop|          |
  *                                   |          v
  *                                ------------------
+ *                                |      CPL       |
+ *                                ------------------
+ *                                   ^          |
+ *                      hardware     |          |
+ *                      completed all|          |dev_submit
+ *                      descriptors  |          |
+ *                                   |          |
+ *                                ------------------
  *                                |      RUN       |
  *                                ------------------
  *
@@ -829,6 +858,7 @@ static const struct rte_dma_dev_ops hisi_dmadev_ops = {
        .vchan_setup      = hisi_dma_vchan_setup,
        .stats_get        = hisi_dma_stats_get,
        .stats_reset      = hisi_dma_stats_reset,
+       .vchan_status     = hisi_dma_vchan_status,
        .dev_dump         = hisi_dma_dump,
 };
 

diff --git a/drivers/dma/hisilicon/hisi_dmadev.h b/drivers/dma/hisilicon/hisi_dmadev.h
index 90b85322ca9b43680cff64e18b6dbb695e8f3e14..deb1357eead0560a5668457d72fe3b498e7d7079 100644 (file)
--- a/drivers/dma/hisilicon/hisi_dmadev.h
+++ b/drivers/dma/hisilicon/hisi_dmadev.h
@@ -132,11 +132,16 @@ enum {
 
 /**
  * In fact, there are multiple states, but it need to pay attention to
- * the following two states for the driver:
+ * the following three states for the driver:
  */
 enum {
        HISI_DMA_STATE_IDLE = 0,
        HISI_DMA_STATE_RUN,
+       /**
+        * All of the submitted descriptor are finished, and the queue
+        * is waiting for new descriptors.
+        */
+       HISI_DMA_STATE_CPL,
 };
 
 /**