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* [PATCH] common/qat: fix vf2pf answer
@ 2022-07-29  7:47 Arek Kusztal
  2022-08-09  9:34 ` Zhang, Roy Fan
  0 siblings, 1 reply; 3+ messages in thread
From: Arek Kusztal @ 2022-07-29  7:47 UTC (permalink / raw)
  To: dev; +Cc: gakhil, roy.fan.zhang, Arek Kusztal, stable

This commit fixes answer sent to physical device in
vf2pf communication.

Fixes: b17d16fb47b4 ("common/qat: add PF to VF communication")
Cc: stable@dpdk.org

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
---
 drivers/common/qat/qat_pf2vf.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/common/qat/qat_pf2vf.c b/drivers/common/qat/qat_pf2vf.c
index 4e9ffc72fc..621f12fce2 100644
--- a/drivers/common/qat/qat_pf2vf.c
+++ b/drivers/common/qat/qat_pf2vf.c
@@ -59,7 +59,7 @@ int qat_pf2vf_exch_msg(struct qat_pci_device *qat_dev,
 		 * the message
 		 */
 		do {
-			rte_delay_us_sleep(5);
+			rte_delay_us_sleep(ADF_IOV_MSG_ACK_DELAY_US * 2);
 			val = ADF_CSR_RD(pmisc_bar_addr, vf_csr_off);
 		} while ((val & ADF_PFVF_INT) &&
 			(++count < ADF_IOV_MSG_ACK_MAX_RETRY));
@@ -70,6 +70,8 @@ int qat_pf2vf_exch_msg(struct qat_pci_device *qat_dev,
 		}
 
 		uint32_t pf_val = ADF_CSR_RD(pmisc_bar_addr, pf_csr_off);
+		msg &= ~ADF_PFVF_INT;
+		ADF_CSR_WR(pmisc_bar_addr, pf_csr_off, msg);
 
 		*(ret + i) = (uint8_t)(pf_val >> (pf2vf_msg.block_hdr > 0 ?
 				10 : 8) & 0xff);
-- 
2.25.1


^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2022-08-28  9:29 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2022-07-29  7:47 [PATCH] common/qat: fix vf2pf answer Arek Kusztal
2022-08-09  9:34 ` Zhang, Roy Fan
2022-08-28  9:29   ` Akhil Goyal

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