diff mbox series

[net-next,3/5] octeontx2-pf: Refactor schedular queue alloc/free calls

Message ID 20230112173120.23312-4-hkelam@marvell.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series octeontx2-pf: HTB offload support | expand

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Context Check Description
netdev/tree_selection success Clearly marked for net-next, async
netdev/fixes_present success Fixes tag not required for -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 success CCed 11 of 11 maintainers
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 13 this patch: 13
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 160 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Hariprasad Kelam Jan. 12, 2023, 5:31 p.m. UTC 
Multiple transmit scheduler queues can be configured at different
levels to support traffic shaping and scheduling. But on txschq free
requests, the transmit schedular config in hardware is not getting
reset. This patch adds support to reset the stale config.

The txschq alloc response handler updates the default txschq
array which is used to configure the transmit packet path from
SMQ to TL2 levels. However, for new features such as QoS offload
that requires it's own txschq queues, this handler is still
invoked and results in undefined behavior. The code now handles
txschq response in the mbox caller function.

Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
---
 .../ethernet/marvell/octeontx2/af/rvu_nix.c   | 45 +++++++++++++++++++
 .../marvell/octeontx2/nic/otx2_common.c       | 34 +++++++-------
 .../ethernet/marvell/octeontx2/nic/otx2_pf.c  |  4 --
 .../ethernet/marvell/octeontx2/nic/otx2_vf.c  |  4 --
 4 files changed, 62 insertions(+), 25 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
index 6b8747ebc08c..9b42d3e97ddd 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
@@ -1677,6 +1677,42 @@  handle_txschq_shaper_update(struct rvu *rvu, int blkaddr, int nixlf,
 	return true;
 }
 
+static void nix_reset_tx_schedule(struct rvu *rvu, int blkaddr,
+				  int lvl, int schq)
+{
+	u64 tlx_parent = 0, tlx_schedule = 0;
+
+	switch (lvl) {
+	case NIX_TXSCH_LVL_TL2:
+		tlx_parent   = NIX_AF_TL2X_PARENT(schq);
+		tlx_schedule = NIX_AF_TL2X_SCHEDULE(schq);
+		break;
+	case NIX_TXSCH_LVL_TL3:
+		tlx_parent   = NIX_AF_TL3X_PARENT(schq);
+		tlx_schedule = NIX_AF_TL3X_SCHEDULE(schq);
+		break;
+	case NIX_TXSCH_LVL_TL4:
+		tlx_parent   = NIX_AF_TL4X_PARENT(schq);
+		tlx_schedule = NIX_AF_TL4X_SCHEDULE(schq);
+		break;
+	case NIX_TXSCH_LVL_MDQ:
+		/* no need to reset SMQ_CFG as HW clears this CSR
+		 * on SMQ flush
+		 */
+		tlx_parent   = NIX_AF_MDQX_PARENT(schq);
+		tlx_schedule = NIX_AF_MDQX_SCHEDULE(schq);
+		break;
+	default:
+		return;
+	}
+
+	if (tlx_parent)
+		rvu_write64(rvu, blkaddr, tlx_parent, 0x0);
+
+	if (tlx_schedule)
+		rvu_write64(rvu, blkaddr, tlx_schedule, 0x0);
+}
+
 /* Disable shaping of pkts by a scheduler queue
  * at a given scheduler level.
  */
@@ -2025,6 +2061,7 @@  int rvu_mbox_handler_nix_txsch_alloc(struct rvu *rvu,
 				pfvf_map[schq] = TXSCH_MAP(pcifunc, 0);
 			nix_reset_tx_linkcfg(rvu, blkaddr, lvl, schq);
 			nix_reset_tx_shaping(rvu, blkaddr, nixlf, lvl, schq);
+			nix_reset_tx_schedule(rvu, blkaddr, lvl, schq);
 		}
 
 		for (idx = 0; idx < req->schq[lvl]; idx++) {
@@ -2034,6 +2071,7 @@  int rvu_mbox_handler_nix_txsch_alloc(struct rvu *rvu,
 				pfvf_map[schq] = TXSCH_MAP(pcifunc, 0);
 			nix_reset_tx_linkcfg(rvu, blkaddr, lvl, schq);
 			nix_reset_tx_shaping(rvu, blkaddr, nixlf, lvl, schq);
+			nix_reset_tx_schedule(rvu, blkaddr, lvl, schq);
 		}
 	}
 
@@ -2122,6 +2160,7 @@  static int nix_txschq_free(struct rvu *rvu, u16 pcifunc)
 				continue;
 			nix_reset_tx_linkcfg(rvu, blkaddr, lvl, schq);
 			nix_clear_tx_xoff(rvu, blkaddr, lvl, schq);
+			nix_reset_tx_shaping(rvu, blkaddr, nixlf, lvl, schq);
 		}
 	}
 	nix_clear_tx_xoff(rvu, blkaddr, NIX_TXSCH_LVL_TL1,
@@ -2160,6 +2199,7 @@  static int nix_txschq_free(struct rvu *rvu, u16 pcifunc)
 		for (schq = 0; schq < txsch->schq.max; schq++) {
 			if (TXSCH_MAP_FUNC(txsch->pfvf_map[schq]) != pcifunc)
 				continue;
+			nix_reset_tx_schedule(rvu, blkaddr, lvl, schq);
 			rvu_free_rsrc(&txsch->schq, schq);
 			txsch->pfvf_map[schq] = TXSCH_MAP(0, NIX_TXSCHQ_FREE);
 		}
@@ -2219,6 +2259,9 @@  static int nix_txschq_free_one(struct rvu *rvu,
 	 */
 	nix_clear_tx_xoff(rvu, blkaddr, lvl, schq);
 
+	nix_reset_tx_linkcfg(rvu, blkaddr, lvl, schq);
+	nix_reset_tx_shaping(rvu, blkaddr, nixlf, lvl, schq);
+
 	/* Flush if it is a SMQ. Onus of disabling
 	 * TL2/3 queue links before SMQ flush is on user
 	 */
@@ -2228,6 +2271,8 @@  static int nix_txschq_free_one(struct rvu *rvu,
 		goto err;
 	}
 
+	nix_reset_tx_schedule(rvu, blkaddr, lvl, schq);
+
 	/* Free the resource */
 	rvu_free_rsrc(&txsch->schq, schq);
 	txsch->pfvf_map[schq] = TXSCH_MAP(0, NIX_TXSCHQ_FREE);
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index 0868ae825736..a4c18565f9f4 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -716,7 +716,8 @@  EXPORT_SYMBOL(otx2_smq_flush);
 int otx2_txsch_alloc(struct otx2_nic *pfvf)
 {
 	struct nix_txsch_alloc_req *req;
-	int lvl;
+	struct nix_txsch_alloc_rsp *rsp;
+	int lvl, schq, rc;
 
 	/* Get memory to put this msg */
 	req = otx2_mbox_alloc_msg_nix_txsch_alloc(&pfvf->mbox);
@@ -726,8 +727,22 @@  int otx2_txsch_alloc(struct otx2_nic *pfvf)
 	/* Request one schq per level */
 	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++)
 		req->schq[lvl] = 1;
+	rc = otx2_sync_mbox_msg(&pfvf->mbox);
+	if (rc)
+		return rc;
 
-	return otx2_sync_mbox_msg(&pfvf->mbox);
+	rsp = (struct nix_txsch_alloc_rsp *)
+	      otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);
+	if (IS_ERR(rsp))
+		return PTR_ERR(rsp);
+
+	/* Setup transmit scheduler list */
+	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++)
+		for (schq = 0; schq < rsp->schq[lvl]; schq++)
+			pfvf->hw.txschq_list[lvl][schq] =
+				rsp->schq_list[lvl][schq];
+
+	return 0;
 }
 
 int otx2_txschq_stop(struct otx2_nic *pfvf)
@@ -1649,21 +1664,6 @@  void mbox_handler_cgx_fec_stats(struct otx2_nic *pfvf,
 	pfvf->hw.cgx_fec_uncorr_blks += rsp->fec_uncorr_blks;
 }
 
-void mbox_handler_nix_txsch_alloc(struct otx2_nic *pf,
-				  struct nix_txsch_alloc_rsp *rsp)
-{
-	int lvl, schq;
-
-	/* Setup transmit scheduler list */
-	for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++)
-		for (schq = 0; schq < rsp->schq[lvl]; schq++)
-			pf->hw.txschq_list[lvl][schq] =
-				rsp->schq_list[lvl][schq];
-
-	pf->hw.txschq_link_cfg_lvl = rsp->link_cfg_lvl;
-}
-EXPORT_SYMBOL(mbox_handler_nix_txsch_alloc);
-
 void mbox_handler_npa_lf_alloc(struct otx2_nic *pfvf,
 			       struct npa_lf_alloc_rsp *rsp)
 {
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
index 3acda6d289d3..92e41d2d5398 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c
@@ -792,10 +792,6 @@  static void otx2_process_pfaf_mbox_msg(struct otx2_nic *pf,
 	case MBOX_MSG_NIX_LF_ALLOC:
 		mbox_handler_nix_lf_alloc(pf, (struct nix_lf_alloc_rsp *)msg);
 		break;
-	case MBOX_MSG_NIX_TXSCH_ALLOC:
-		mbox_handler_nix_txsch_alloc(pf,
-					     (struct nix_txsch_alloc_rsp *)msg);
-		break;
 	case MBOX_MSG_NIX_BP_ENABLE:
 		mbox_handler_nix_bp_enable(pf, (struct nix_bp_cfg_rsp *)msg);
 		break;
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
index c583443cb9c7..cc44a3281bf0 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_vf.c
@@ -70,10 +70,6 @@  static void otx2vf_process_vfaf_mbox_msg(struct otx2_nic *vf,
 	case MBOX_MSG_NIX_LF_ALLOC:
 		mbox_handler_nix_lf_alloc(vf, (struct nix_lf_alloc_rsp *)msg);
 		break;
-	case MBOX_MSG_NIX_TXSCH_ALLOC:
-		mbox_handler_nix_txsch_alloc(vf,
-					     (struct nix_txsch_alloc_rsp *)msg);
-		break;
 	case MBOX_MSG_NIX_BP_ENABLE:
 		mbox_handler_nix_bp_enable(vf, (struct nix_bp_cfg_rsp *)msg);
 		break;