[dpdk-dev] [PATCH v2 55/61] net/qede/base: prevent DMAE transactions during recovery

Rasesh Mody rasesh.mody at cavium.com
Sat Mar 18 08:06:20 CET 2017


Prevent DMA engine transactions during recovery phase.

Signed-off-by: Rasesh Mody <rasesh.mody at cavium.com>
---
 drivers/net/qede/base/ecore_hw.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/net/qede/base/ecore_hw.c b/drivers/net/qede/base/ecore_hw.c
index 396edc2..280925f 100644
--- a/drivers/net/qede/base/ecore_hw.c
+++ b/drivers/net/qede/base/ecore_hw.c
@@ -773,6 +773,17 @@ ecore_dmae_execute_command(struct ecore_hwfn *p_hwfn,
 	enum _ecore_status_t ecore_status = ECORE_SUCCESS;
 	u32 offset = 0;
 
+	if (p_hwfn->p_dev->recov_in_prog) {
+		DP_VERBOSE(p_hwfn, ECORE_MSG_HW,
+			   "Recovery is in progress. Avoid DMAE transaction [{src: addr 0x%lx, type %d}, {dst: addr 0x%lx, type %d}, size %d].\n",
+			   src_addr, src_type, dst_addr, dst_type,
+			   size_in_dwords);
+		/* Return success to let the flow to be completed successfully
+		 * w/o any error handling.
+		 */
+		return ECORE_SUCCESS;
+	}
+
 	ecore_dmae_opcode(p_hwfn,
 			  (src_type == ECORE_DMAE_ADDRESS_GRC),
 			  (dst_type == ECORE_DMAE_ADDRESS_GRC), p_params);
-- 
1.7.10.3



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