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From: Amit Prakash Shukla <amitprakashs@marvell.com>
To: Amit Prakash Shukla <amitprakashs@marvell.com>, Jerin Jacob
<jerinj@marvell.com>
CC: <dev@dpdk.org>, <fengchengwen@huawei.com>, <kevin.laatz@intel.com>,
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Subject: [PATCH v8 06/12] eventdev/dma: support adapter start and stop
Date: Fri, 29 Sep 2023 17:20:45 +0530
Message-ID: <20230929115051.564063-7-amitprakashs@marvell.com>
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Added API support to start and stop DMA adapter.
Signed-off-by: Amit Prakash Shukla <amitprakashs@marvell.com>
---
lib/eventdev/rte_event_dma_adapter.c | 69 ++++++++++++++++++++++++++++
1 file changed, 69 insertions(+)
diff --git a/lib/eventdev/rte_event_dma_adapter.c b/lib/eventdev/rte_event_dma_adapter.c
index 1d8bae0422..be6c2623e9 100644
--- a/lib/eventdev/rte_event_dma_adapter.c
+++ b/lib/eventdev/rte_event_dma_adapter.c
@@ -74,6 +74,13 @@ struct dma_device_info {
/* Next queue pair to be processed */
uint16_t next_vchan_id;
+ /* Set to indicate processing has been started */
+ uint8_t dev_started;
+
+ /* Set to indicate dmadev->eventdev packet
+ * transfer uses a hardware mechanism
+ */
+ uint8_t internal_event_port;
} __rte_cache_aligned;
struct event_dma_adapter {
@@ -1129,3 +1136,65 @@ rte_event_dma_adapter_vchan_del(uint8_t id, int16_t dma_dev_id, uint16_t vchan)
return ret;
}
+
+static int
+edma_adapter_ctrl(uint8_t id, int start)
+{
+ struct event_dma_adapter *adapter;
+ struct dma_device_info *dev_info;
+ struct rte_eventdev *dev;
+ uint16_t num_dma_dev;
+ int stop = !start;
+ int use_service;
+ uint32_t i;
+
+ use_service = 0;
+ EVENT_DMA_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);
+ adapter = edma_id_to_adapter(id);
+ if (adapter == NULL)
+ return -EINVAL;
+
+ num_dma_dev = rte_dma_count_avail();
+ dev = &rte_eventdevs[adapter->eventdev_id];
+
+ for (i = 0; i < num_dma_dev; i++) {
+ dev_info = &adapter->dma_devs[i];
+ /* start check for num queue pairs */
+ if (start && !dev_info->num_vchanq)
+ continue;
+ /* stop check if dev has been started */
+ if (stop && !dev_info->dev_started)
+ continue;
+ use_service |= !dev_info->internal_event_port;
+ dev_info->dev_started = start;
+ if (dev_info->internal_event_port == 0)
+ continue;
+ start ? (*dev->dev_ops->dma_adapter_start)(dev, i) :
+ (*dev->dev_ops->dma_adapter_stop)(dev, i);
+ }
+
+ if (use_service)
+ rte_service_runstate_set(adapter->service_id, start);
+
+ return 0;
+}
+
+int
+rte_event_dma_adapter_start(uint8_t id)
+{
+ struct event_dma_adapter *adapter;
+
+ EVENT_DMA_ADAPTER_ID_VALID_OR_ERR_RET(id, -EINVAL);
+
+ adapter = edma_id_to_adapter(id);
+ if (adapter == NULL)
+ return -EINVAL;
+
+ return edma_adapter_ctrl(id, 1);
+}
+
+int
+rte_event_dma_adapter_stop(uint8_t id)
+{
+ return edma_adapter_ctrl(id, 0);
+}
--
2.25.1