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From: Gagandeep Singh <g.singh@nxp.com>
To: dev@dpdk.org,
Sachin Saxena <sachin.saxena@nxp.com>
Cc: Jun Yang <jun.yang@nxp.com>
Subject: [v2 27/30] dma/dpaa: improve silent mode support
Date: Mon, 22 Jul 2024 17:28:40 +0530
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From: Jun Yang <jun.yang@nxp.com>
Don't save eq context in silent mode, check HW status only to
identify if queue is full.
Signed-off-by: Jun Yang <jun.yang@nxp.com>
---
drivers/dma/dpaa/dpaa_qdma.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/dpaa/dpaa_qdma.c b/drivers/dma/dpaa/dpaa_qdma.c
index 5d91ad2d70..8f5b6c6ea5 100644
--- a/drivers/dma/dpaa/dpaa_qdma.c
+++ b/drivers/dma/dpaa/dpaa_qdma.c
@@ -586,9 +586,13 @@ static int
fsl_qdma_enqueue_desc_to_ring(struct fsl_qdma_queue *fsl_queue,
int is_burst)
{
+ struct fsl_qdma_engine *fsl_qdma = fsl_queue->engine;
uint16_t i, num = fsl_queue->pending_num, idx, start, dq;
int ret, dq_cnt;
+ if (fsl_qdma->is_silent)
+ return 0;
+
num = is_burst ? fsl_queue->pending_num : 1;
fsl_queue->desc_in_hw[fsl_queue->ci] = num;
@@ -697,7 +701,7 @@ fsl_qdma_enqueue_overflow(struct fsl_qdma_queue *fsl_queue)
check_num = 0;
overflow_check:
- if (unlikely(s_hw_err_check)) {
+ if (fsl_qdma->is_silent || unlikely(s_hw_err_check)) {
reg = qdma_readl_be(block +
FSL_QDMA_BCQSR(fsl_queue->queue_id));
overflow = (reg & FSL_QDMA_BCQSR_QF_XOFF_BE) ?
@@ -707,8 +711,14 @@ fsl_qdma_enqueue_overflow(struct fsl_qdma_queue *fsl_queue)
QDMA_QUEUE_CR_WM) ? 1 : 0;
}
- if (likely(!overflow))
+ if (likely(!overflow)) {
return 0;
+ } else if (fsl_qdma->is_silent) {
+ check_num++;
+ if (check_num < 1000)
+ goto overflow_check;
+ return -ENOSPC;
+ }
DPAA_QDMA_DP_DEBUG("TC%d/Q%d submitted(%"PRIu64")-completed(%"PRIu64") >= %d",
fsl_queue->block_id, fsl_queue->queue_id,
--
2.25.1