This is a note to let you know that I've just added the patch titled
octeontx2-af: Fix NIX SQ mode and BP config
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
octeontx2-af-fix-nix-sq-mode-and-bp-config.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2f2f64ee15944e3ed3e58227d2817925da0410e2
Author: Geetha sowjanya <gakula@xxxxxxxxxxx>
Date: Mon Apr 8 12:06:43 2024 +0530
octeontx2-af: Fix NIX SQ mode and BP config
[ Upstream commit faf23006185e777db18912685922c5ddb2df383f ]
NIX SQ mode and link backpressure configuration is required for
all platforms. But in current driver this code is wrongly placed
under specific platform check. This patch fixes the issue by
moving the code out of platform check.
Fixes: 5d9b976d4480 ("octeontx2-af: Support fixed transmit scheduler topology")
Signed-off-by: Geetha sowjanya <gakula@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240408063643.26288-1-gakula@xxxxxxxxxxx
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index bda93e550b08a..34a9a9164f3c6 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -4184,18 +4184,18 @@ static int rvu_nix_block_init(struct rvu *rvu, struct nix_hw *nix_hw)
*/
rvu_write64(rvu, blkaddr, NIX_AF_CFG,
rvu_read64(rvu, blkaddr, NIX_AF_CFG) | 0x40ULL);
+ }
- /* Set chan/link to backpressure TL3 instead of TL2 */
- rvu_write64(rvu, blkaddr, NIX_AF_PSE_CHANNEL_LEVEL, 0x01);
+ /* Set chan/link to backpressure TL3 instead of TL2 */
+ rvu_write64(rvu, blkaddr, NIX_AF_PSE_CHANNEL_LEVEL, 0x01);
- /* Disable SQ manager's sticky mode operation (set TM6 = 0)
- * This sticky mode is known to cause SQ stalls when multiple
- * SQs are mapped to same SMQ and transmitting pkts at a time.
- */
- cfg = rvu_read64(rvu, blkaddr, NIX_AF_SQM_DBG_CTL_STATUS);
- cfg &= ~BIT_ULL(15);
- rvu_write64(rvu, blkaddr, NIX_AF_SQM_DBG_CTL_STATUS, cfg);
- }
+ /* Disable SQ manager's sticky mode operation (set TM6 = 0)
+ * This sticky mode is known to cause SQ stalls when multiple
+ * SQs are mapped to same SMQ and transmitting pkts at a time.
+ */
+ cfg = rvu_read64(rvu, blkaddr, NIX_AF_SQM_DBG_CTL_STATUS);
+ cfg &= ~BIT_ULL(15);
+ rvu_write64(rvu, blkaddr, NIX_AF_SQM_DBG_CTL_STATUS, cfg);
ltdefs = rvu->kpu.lt_def;
/* Calibrate X2P bus to check if CGX/LBK links are fine */
