octeontx2-af: cn10k: Increase outstanding LMTST transactions

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@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Link: https://lore.kernel.org/r/20231205055241.26355-1-gakula@marvell.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

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)

drivers/net/ethernet/marvell/octeontx2/af/rvu.h

@@ -969,6 +969,7 @@ 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);

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 |=	FIELD_PREP(LMTST_THROTTLE_MASK, LMTST_WR_PEND_MAX);
+	rvu_write64(rvu, BLKADDR_APR, APR_AF_LMT_CFG, reg);
+}

drivers/net/ethernet/marvell/octeontx2/af/rvu_reg.h

@@ -733,5 +733,7 @@
 #define APR_LMT_MAP_ENT_DIS_SCH_CMP_SHIFT	23
 #define APR_LMT_MAP_ENT_SCH_ENA_SHIFT		22
 #define APR_LMT_MAP_ENT_DIS_LINE_PREF_SHIFT	21
+#define LMTST_THROTTLE_MASK		GENMASK_ULL(38, 35)
+#define LMTST_WR_PEND_MAX		15
 
 #endif /* RVU_REG_H */