[net-next PATCH] octeontx2-af: cn10k: Increase outstanding LMTST transactions

From: Geetha sowjanya
Date: Wed Nov 29 2023 - 06:22:15 EST


From: Pavan Nikhilesh <pbhagavatula@xxxxxxxxxxx>

Currently the number of outstanding store transactions issued by AP as
a part of LMTST operation is set to 1 i.e default value.
This patch set to max supported value to increase the performance.

Signed-off-by: Pavan Nikhilesh <pbhagavatula@xxxxxxxxxxx>
Signed-off-by: Geetha sowjanya <gakula@xxxxxxxxxxx>
---
drivers/net/ethernet/marvell/octeontx2/af/rvu.c | 3 +++
drivers/net/ethernet/marvell/octeontx2/af/rvu.h | 1 +
drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c | 9 +++++++++
3 files changed, 13 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
index 22c395c7d040..14bb91b98f97 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -935,6 +935,9 @@ static int rvu_setup_hw_resources(struct rvu *rvu)
hw->total_vfs = (cfg >> 20) & 0xFFF;
hw->max_vfs_per_pf = (cfg >> 40) & 0xFF;

+ if (!is_rvu_otx2(rvu))
+ rvu_apr_block_cn10k_init(rvu);
+
/* Init NPA LF's bitmap */
block = &hw->block[BLKADDR_NPA];
if (!block->implemented)
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
index c4d999ef5ab4..6546cc489d7e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h
@@ -940,6 +940,7 @@ void rvu_nix_block_cn10k_init(struct rvu *rvu, struct nix_hw *nix_hw);

/* CN10K RVU - LMT*/
void rvu_reset_lmt_map_tbl(struct rvu *rvu, u16 pcifunc);
+void rvu_apr_block_cn10k_init(struct rvu *rvu);

#ifdef CONFIG_DEBUG_FS
void rvu_dbg_init(struct rvu *rvu);
diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c
index 0e74c5a2231e..93fedabfe31e 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c
@@ -559,3 +559,12 @@ void rvu_nix_block_cn10k_init(struct rvu *rvu, struct nix_hw *nix_hw)
cfg |= BIT_ULL(1) | BIT_ULL(2);
rvu_write64(rvu, blkaddr, NIX_AF_CFG, cfg);
}
+
+void rvu_apr_block_cn10k_init(struct rvu *rvu)
+{
+ u64 reg;
+
+ reg = rvu_read64(rvu, BLKADDR_APR, APR_AF_LMT_CFG);
+ reg |= 0xFULL << 35;
+ rvu_write64(rvu, BLKADDR_APR, APR_AF_LMT_CFG, reg);
+}
--
2.25.1