octeontx2-af: cn10K: support for sched lmtst and other features

Enhancing the mailbox scope to support important configurations
like enabling scheduled LMTST, disable LMTLINE prefetch, disable
early completion for ordered LMTST, as per request from the
application. On FLR these configurations will be reset to default.
This patch also adds the 95XXO silicon version to octeontx2 silicon
list.

Signed-off-by: Harman Kalra <hkalra@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 78 insertions, 12 deletions

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c
index dbe9149a215e..87395927a489 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cn10k.c
@@ -49,6 +49,7 @@ static int lmtst_map_table_ops(struct rvu *rvu, u32 index, u64 *val,
 	return 0;
 }
 
+#define LMT_MAP_TBL_W1_OFF  8
 static u32 rvu_get_lmtst_tbl_index(struct rvu *rvu, u16 pcifunc)
 {
 	return ((rvu_get_pf(pcifunc) * rvu->hw->total_vfs) +
@@ -131,9 +132,11 @@ int rvu_mbox_handler_lmtst_tbl_setup(struct rvu *rvu,
 				     struct lmtst_tbl_setup_req *req,
 				     struct msg_rsp *rsp)
 {
-	u64 lmt_addr, val;
-	u32 pri_tbl_idx;
+	struct rvu_pfvf *pfvf = rvu_get_pfvf(rvu, req->hdr.pcifunc);
+	u32 pri_tbl_idx, tbl_idx;
+	u64 lmt_addr;
 	int err = 0;
+	u64 val;
 
 	/* Check if PF_FUNC wants to use it's own local memory as LMTLINE
 	 * region, if so, convert that IOVA to physical address and
@@ -170,7 +173,7 @@ int rvu_mbox_handler_lmtst_tbl_setup(struct rvu *rvu,
 			dev_err(rvu->dev,
 				"Failed to read LMT map table: index 0x%x err %d\n",
 				pri_tbl_idx, err);
-			return err;
+			goto error;
 		}
 
 		/* Update the base lmt addr of secondary with primary's base
@@ -181,7 +184,53 @@ int rvu_mbox_handler_lmtst_tbl_setup(struct rvu *rvu,
 			return err;
 	}
 
-	return 0;
+	/* This mailbox can also be used to update word1 of APR_LMT_MAP_ENTRY_S
+	 * like enabling scheduled LMTST, disable LMTLINE prefetch, disable
+	 * early completion for ordered LMTST.
+	 */
+	if (req->sch_ena || req->dis_sched_early_comp || req->dis_line_pref) {
+		tbl_idx = rvu_get_lmtst_tbl_index(rvu, req->hdr.pcifunc);
+		err = lmtst_map_table_ops(rvu, tbl_idx + LMT_MAP_TBL_W1_OFF,
+					  &val, LMT_TBL_OP_READ);
+		if (err) {
+			dev_err(rvu->dev,
+				"Failed to read LMT map table: index 0x%x err %d\n",
+				tbl_idx + LMT_MAP_TBL_W1_OFF, err);
+			goto error;
+		}
+
+		/* Storing lmt map table entry word1 default value as this needs
+		 * to be reverted in FLR. Also making sure this default value
+		 * doesn't get overwritten on multiple calls to this mailbox.
+		 */
+		if (!pfvf->lmt_map_ent_w1)
+			pfvf->lmt_map_ent_w1 = val;
+
+		/* Disable early completion for Ordered LMTSTs. */
+		if (req->dis_sched_early_comp)
+			val |= (req->dis_sched_early_comp <<
+				APR_LMT_MAP_ENT_DIS_SCH_CMP_SHIFT);
+		/* Enable scheduled LMTST */
+		if (req->sch_ena)
+			val |= (req->sch_ena << APR_LMT_MAP_ENT_SCH_ENA_SHIFT) |
+				req->ssow_pf_func;
+		/* Disables LMTLINE prefetch before receiving store data. */
+		if (req->dis_line_pref)
+			val |= (req->dis_line_pref <<
+				APR_LMT_MAP_ENT_DIS_LINE_PREF_SHIFT);
+
+		err = lmtst_map_table_ops(rvu, tbl_idx + LMT_MAP_TBL_W1_OFF,
+					  &val, LMT_TBL_OP_WRITE);
+		if (err) {
+			dev_err(rvu->dev,
+				"Failed to update LMT map table: index 0x%x err %d\n",
+				tbl_idx + LMT_MAP_TBL_W1_OFF, err);
+			goto error;
+		}
+	}
+
+error:
+	return err;
 }
 
 /* Resetting the lmtst map table to original base addresses */
@@ -194,19 +243,36 @@ void rvu_reset_lmt_map_tbl(struct rvu *rvu, u16 pcifunc)
 	if (is_rvu_otx2(rvu))
 		return;
 
-	if (pfvf->lmt_base_addr) {
+	if (pfvf->lmt_base_addr || pfvf->lmt_map_ent_w1) {
 		/* This corresponds to lmt map table index */
 		tbl_idx = rvu_get_lmtst_tbl_index(rvu, pcifunc);
 		/* Reverting back original lmt base addr for respective
 		 * pcifunc.
 		 */
-		err = lmtst_map_table_ops(rvu, tbl_idx, &pfvf->lmt_base_addr,
-					  LMT_TBL_OP_WRITE);
-		if (err)
-			dev_err(rvu->dev,
-				"Failed to update LMT map table: index 0x%x err %d\n",
-				tbl_idx, err);
-		pfvf->lmt_base_addr = 0;
+		if (pfvf->lmt_base_addr) {
+			err = lmtst_map_table_ops(rvu, tbl_idx,
+						  &pfvf->lmt_base_addr,
+						  LMT_TBL_OP_WRITE);
+			if (err)
+				dev_err(rvu->dev,
+					"Failed to update LMT map table: index 0x%x err %d\n",
+					tbl_idx, err);
+			pfvf->lmt_base_addr = 0;
+		}
+		/* Reverting back to orginal word1 val of lmtst map table entry
+		 * which underwent changes.
+		 */
+		if (pfvf->lmt_map_ent_w1) {
+			err = lmtst_map_table_ops(rvu,
+						  tbl_idx + LMT_MAP_TBL_W1_OFF,
+						  &pfvf->lmt_map_ent_w1,
+						  LMT_TBL_OP_WRITE);
+			if (err)
+				dev_err(rvu->dev,
+					"Failed to update LMT map table: index 0x%x err %d\n",
+					tbl_idx + LMT_MAP_TBL_W1_OFF, err);
+			pfvf->lmt_map_ent_w1 = 0;
+		}
 	}
 }