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From: Ashwin Sekhar T K <asekhar@marvell.com>
To: <dev@dpdk.org>
Cc: <jerinj@marvell.com>, <skori@marvell.com>,
	<skoteshwar@marvell.com>, <pbhagavatula@marvell.com>,
	<kirankumark@marvell.com>, <psatheesh@marvell.com>,
	<asekhar@marvell.com>, <anoobj@marvell.com>, <gakhil@marvell.com>
Subject: [dpdk-dev] [PATCH v2 2/2] common/cnxk: avoid using stashing option of stype
Date: Fri, 17 Sep 2021 15:04:37 +0530	[thread overview]
Message-ID: <20210917093437.269363-2-asekhar@marvell.com> (raw)
In-Reply-To: <20210917093437.269363-1-asekhar@marvell.com>

Avoid using stashing option of stype in NPA in cn10k-a0 stepping.

This is a workaround for a HW Errata due to which NPA stashing operations
will never result in writing the data into L2 cache. But instead, it will
be written into LLC.

Signed-off-by: Ashwin Sekhar T K <asekhar@marvell.com>
Acked-by: Jerin Jacob <jerinj@marvell.com>
---
 drivers/common/cnxk/roc_nix_queue.c  | 4 ++++
 drivers/common/cnxk/roc_nix_tm_ops.c | 7 +++++++
 drivers/common/cnxk/roc_npa.h        | 2 +-
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/common/cnxk/roc_nix_queue.c b/drivers/common/cnxk/roc_nix_queue.c
index 7e2f86eca7..76e439e7a9 100644
--- a/drivers/common/cnxk/roc_nix_queue.c
+++ b/drivers/common/cnxk/roc_nix_queue.c
@@ -585,6 +585,10 @@ sqb_pool_populate(struct roc_nix *roc_nix, struct roc_nix_sq *sq)
 
 	memset(&aura, 0, sizeof(aura));
 	aura.fc_ena = 1;
+	if (roc_model_is_cn9k() || roc_model_is_cn10ka_a0())
+		aura.fc_stype = 0x0; /* STF */
+	else
+		aura.fc_stype = 0x3; /* STSTP */
 	aura.fc_addr = (uint64_t)sq->fc;
 	aura.fc_hyst_bits = 0; /* Store count on all updates */
 	rc = roc_npa_pool_create(&sq->aura_handle, blk_sz, NIX_MAX_SQB, &aura,
diff --git a/drivers/common/cnxk/roc_nix_tm_ops.c b/drivers/common/cnxk/roc_nix_tm_ops.c
index ed244d4214..f2173c9a58 100644
--- a/drivers/common/cnxk/roc_nix_tm_ops.c
+++ b/drivers/common/cnxk/roc_nix_tm_ops.c
@@ -38,6 +38,13 @@ roc_nix_tm_sq_aura_fc(struct roc_nix_sq *sq, bool enable)
 
 	req->aura.fc_ena = enable;
 	req->aura_mask.fc_ena = 1;
+	if (roc_model_is_cn9k() || roc_model_is_cn10ka_a0()) {
+		req->aura.fc_stype = 0x0;      /* STF */
+		req->aura_mask.fc_stype = 0x0; /* STF */
+	} else {
+		req->aura.fc_stype = 0x3;      /* STSTP */
+		req->aura_mask.fc_stype = 0x3; /* STSTP */
+	}
 
 	rc = mbox_process(mbox);
 	if (rc)
diff --git a/drivers/common/cnxk/roc_npa.h b/drivers/common/cnxk/roc_npa.h
index 3fc6192e57..1cf50e5c4e 100644
--- a/drivers/common/cnxk/roc_npa.h
+++ b/drivers/common/cnxk/roc_npa.h
@@ -214,7 +214,7 @@ roc_npa_aura_batch_alloc_issue(uint64_t aura_handle, uint64_t *buf,
 	cmp.u = 0;
 	cmp.compare_s.aura = roc_npa_aura_handle_to_aura(aura_handle);
 	cmp.compare_s.drop = drop;
-	cmp.compare_s.stype = ALLOC_STYPE_STSTP;
+	cmp.compare_s.stype = ALLOC_STYPE_STF;
 	cmp.compare_s.dis_wait = dis_wait;
 	cmp.compare_s.count = num;
 
-- 
2.32.0


  reply	other threads:[~2021-09-17  9:36 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-30 14:08 [dpdk-dev] [PATCH] common/cnxk: avoid using stype STSTP in batch alloc Ashwin Sekhar T K
2021-08-30 16:29 ` [dpdk-dev] [PATCH 1/2] common/cnxk: update roc models Ashwin Sekhar T K
2021-08-30 16:29   ` [dpdk-dev] [PATCH 2/2] common/cnxk: avoid using stashing option of stype Ashwin Sekhar T K
2021-09-16 14:36     ` Jerin Jacob
2021-09-16 14:37   ` [dpdk-dev] [PATCH 1/2] common/cnxk: update roc models Jerin Jacob
2021-09-17  9:34   ` [dpdk-dev] [PATCH v2 " Ashwin Sekhar T K
2021-09-17  9:34     ` Ashwin Sekhar T K [this message]
2021-09-20  8:51     ` Jerin Jacob

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