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From: Sathesh Edara <sedara@marvell.com>
To: <sburla@marvell.com>, <jerinj@marvell.com>, <sedara@marvell.com>,
	"Radha Mohan Chintakuntla" <radhac@marvell.com>,
	Veerasenareddy Burru <vburru@marvell.com>
Cc: <dev@dpdk.org>
Subject: [PATCH v3 10/11] net/octeon_ep: set watermark for output queues
Date: Mon, 24 Apr 2023 05:28:33 -0700	[thread overview]
Message-ID: <20230424122835.39493-11-sedara@marvell.com> (raw)
In-Reply-To: <20230424122835.39493-1-sedara@marvell.com>

Sets the watermark level for SDP output queues
to send backpressure to NIX, when available Rx
buffers fall below watermark.

Signed-off-by: Sathesh Edara <sedara@marvell.com>
---
 drivers/net/octeon_ep/cnxk_ep_vf.c    | 7 ++++++-
 drivers/net/octeon_ep/otx_ep_common.h | 1 +
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/octeon_ep/cnxk_ep_vf.c b/drivers/net/octeon_ep/cnxk_ep_vf.c
index cadb4ecbf9..92c2d2ca5c 100644
--- a/drivers/net/octeon_ep/cnxk_ep_vf.c
+++ b/drivers/net/octeon_ep/cnxk_ep_vf.c
@@ -245,7 +245,12 @@ cnxk_ep_vf_setup_oq_regs(struct otx_ep_device *otx_ep, uint32_t oq_no)
 	}
 
 	otx_ep_dbg("SDP_R[%d]_sent: %x", oq_no, rte_read32(droq->pkts_sent_reg));
-		return 0;
+
+	/* Set Watermark for backpressure */
+	oct_ep_write64(OTX_EP_OQ_WMARK_MIN,
+		       otx_ep->hw_addr + CNXK_EP_R_OUT_WMARK(oq_no));
+
+	return 0;
 }
 
 static int
diff --git a/drivers/net/octeon_ep/otx_ep_common.h b/drivers/net/octeon_ep/otx_ep_common.h
index dadc8d1579..0305079af9 100644
--- a/drivers/net/octeon_ep/otx_ep_common.h
+++ b/drivers/net/octeon_ep/otx_ep_common.h
@@ -23,6 +23,7 @@
 #define OTX_EP_MAX_OQ_DESCRIPTORS   (8192)
 #define OTX_EP_OQ_BUF_SIZE          (2048)
 #define OTX_EP_MIN_RX_BUF_SIZE      (64)
+#define OTX_EP_OQ_WMARK_MIN         (256)
 
 #define OTX_EP_OQ_INFOPTR_MODE      (0)
 #define OTX_EP_OQ_REFIL_THRESHOLD   (16)
-- 
2.31.1


  parent reply	other threads:[~2023-04-24 14:36 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-04 14:18 [PATCH v1 0/9] extend octeon ep driver functionality Sathesh Edara
2023-04-04 14:18 ` [PATCH v1 1/9] net/octeon_ep: support cnf95n and cnf95o SoC Sathesh Edara
2023-04-05 14:25   ` [PATCH v2 00/10] extend octeon ep driver functionality Sathesh Edara
2023-04-05 14:25     ` [PATCH v2 01/10] net/octeon_ep: support cnf95n and cnf95o SoC Sathesh Edara
2023-04-24 12:28       ` [PATCH v3 00/11] extend octeon ep driver functionality Sathesh Edara
2023-04-24 12:28         ` [PATCH v3 01/11] net/octeon_ep: support cnf95n and cnf95o SoC Sathesh Edara
2023-04-24 12:28         ` [PATCH v3 02/11] net/octeon_ep: support CNX10K series SoC Sathesh Edara
2023-04-24 12:28         ` [PATCH v3 03/11] net/octeon_ep: support error propagation Sathesh Edara
2023-04-24 12:28         ` [PATCH v3 04/11] net/octeon_ep: support IQ/OQ reset Sathesh Edara
2023-04-24 12:28         ` [PATCH v3 05/11] devtools: add acronym in dictionary for commit checks Sathesh Edara
2023-04-24 12:28         ` [PATCH v3 06/11] net/octeon_ep: support ISM Sathesh Edara
2023-04-24 12:28         ` [PATCH v3 07/11] net/octeon_ep: flush pending DMA operations Sathesh Edara
2023-04-24 12:28         ` [PATCH v3 08/11] net/octeon_ep: update queue size checks Sathesh Edara
2023-04-24 12:28         ` [PATCH v3 09/11] net/octeon_ep: support mailbox between VF and PF Sathesh Edara
2023-04-24 12:28         ` Sathesh Edara [this message]
2023-04-24 12:28         ` [PATCH v3 11/11] net/octeon_ep: set secondary process dev ops Sathesh Edara
2023-04-05 14:25     ` [PATCH v2 02/10] net/octeon_ep: support CNX10K series SoC Sathesh Edara
2023-04-05 14:25     ` [PATCH v2 03/10] net/octeon_ep: support error propagation Sathesh Edara
2023-04-05 14:25     ` [PATCH v2 04/10] net/octeon_ep: support IQ/OQ reset Sathesh Edara
2023-04-05 14:25     ` [PATCH v2 05/10] net/octeon_ep: support ISM Sathesh Edara
2023-04-21  4:56       ` Jerin Jacob
2023-04-05 14:25     ` [PATCH v2 06/10] net/octeon_ep: fix DMA incompletion Sathesh Edara
2023-04-21  4:51       ` Jerin Jacob
2023-04-05 14:25     ` [PATCH v2 07/10] net/octeon_ep: update queue size checks Sathesh Edara
2023-04-05 14:25     ` [PATCH v2 08/10] net/octeon_ep: support Mailbox between VF and PF Sathesh Edara
2023-04-21  5:00       ` Jerin Jacob
2023-04-05 14:25     ` [PATCH v2 09/10] net/octeon_ep: set watermark for output queues Sathesh Edara
2023-04-05 14:25     ` [PATCH v2 10/10] net/octeon_ep: set secondary process dev ops Sathesh Edara
2023-04-21  5:03       ` Jerin Jacob
2023-04-24 12:55     ` [PATCH v3 00/11] extend octeon ep driver functionality Sathesh Edara
2023-04-24 12:55       ` [PATCH v3 01/11] net/octeon_ep: support cnf95n and cnf95o SoC Sathesh Edara
2023-04-24 12:55       ` [PATCH v3 02/11] net/octeon_ep: support CNX10K series SoC Sathesh Edara
2023-04-24 12:55       ` [PATCH v3 03/11] net/octeon_ep: support error propagation Sathesh Edara
2023-04-24 12:55       ` [PATCH v3 04/11] net/octeon_ep: support IQ/OQ reset Sathesh Edara
2023-04-24 12:55       ` [PATCH v3 05/11] devtools: add acronym in dictionary for commit checks Sathesh Edara
2023-05-03  7:16         ` Jerin Jacob
2023-04-24 12:55       ` [PATCH v3 06/11] net/octeon_ep: support ISM Sathesh Edara
2023-04-24 12:55       ` [PATCH v3 07/11] net/octeon_ep: flush pending DMA operations Sathesh Edara
2023-04-24 12:55       ` [PATCH v3 08/11] net/octeon_ep: update queue size checks Sathesh Edara
2023-04-24 12:55       ` [PATCH v3 09/11] net/octeon_ep: support mailbox between VF and PF Sathesh Edara
2023-04-24 12:55       ` [PATCH v3 10/11] net/octeon_ep: set watermark for output queues Sathesh Edara
2023-04-24 12:55       ` [PATCH v3 11/11] net/octeon_ep: set secondary process dev ops Sathesh Edara
2023-04-04 14:18 ` [PATCH v1 2/9] net/octeon_ep: support CNX10K series SoC Sathesh Edara
2023-04-04 14:18 ` [PATCH v1 3/9] net/octeon_ep: support error propagation Sathesh Edara
2023-04-04 14:18 ` [PATCH v1 4/9] net/octeon_ep: support IQ/OQ reset Sathesh Edara
2023-04-04 14:18 ` [PATCH v1 5/9] net/octeon_ep: support ISM Sathesh Edara
2023-04-04 14:18 ` [PATCH v1 6/9] net/octeon_ep: fix DMA incompletion Sathesh Edara
2023-04-04 14:18 ` [PATCH v1 7/9] net/octeon_ep: update queue size checks Sathesh Edara
2023-04-04 14:18 ` [PATCH v1 8/9] net/octeon_ep: support Mailbox between VF and PF Sathesh Edara
2023-04-04 14:18 ` [PATCH v1 9/9] net/octeon_ep: set watermark for output queues Sathesh Edara

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