diff mbox series

[net,3/9] octeontx2-af: Retry until RVU block reset complete

Message ID 1642746887-30924-4-git-send-email-sbhatta@marvell.com (mailing list archive)
State Accepted
Delegated to: Netdev Maintainers
Headers show
Series Fixes for CN10K and CN9xxx platforms | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net
netdev/fixes_present success Fixes tag present in non-next series
netdev/subject_prefix success Link
netdev/cover_letter success Series has a cover letter
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers warning 2 maintainers not CCed: lcherian@marvell.com jerinj@marvell.com
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 5 this patch: 5
netdev/checkpatch warning WARNING: line length of 88 exceeds 80 columns WARNING: line length of 89 exceeds 80 columns
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Subbaraya Sundeep Jan. 21, 2022, 6:34 a.m. UTC 
From: Geetha sowjanya <gakula@marvell.com>

Few RVU blocks like SSO require more time for reset on some
silicons. Hence retrying the block reset until success.

Fixes: c0fa2cff8822c ("octeontx2-af: Handle return value in block reset")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
index 3ca6b94..54e1b27 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -520,8 +520,11 @@  static void rvu_block_reset(struct rvu *rvu, int blkaddr, u64 rst_reg)
 
 	rvu_write64(rvu, blkaddr, rst_reg, BIT_ULL(0));
 	err = rvu_poll_reg(rvu, blkaddr, rst_reg, BIT_ULL(63), true);
-	if (err)
-		dev_err(rvu->dev, "HW block:%d reset failed\n", blkaddr);
+	if (err) {
+		dev_err(rvu->dev, "HW block:%d reset timeout retrying again\n", blkaddr);
+		while (rvu_poll_reg(rvu, blkaddr, rst_reg, BIT_ULL(63), true) == -EBUSY)
+			;
+	}
 }
 
 static void rvu_reset_all_blocks(struct rvu *rvu)