From: Nithin Dabilpuram <ndabilpuram@marvell.com>
To: <jerinj@marvell.com>, Nithin Dabilpuram <ndabilpuram@marvell.com>,
"Kiran Kumar K" <kirankumark@marvell.com>,
Sunil Kumar Kori <skori@marvell.com>,
Satha Rao <skoteshwar@marvell.com>
Cc: <dev@dpdk.org>, Harman Kalra <hkalra@marvell.com>
Subject: [PATCH 5/8] common/cnxk: always use single qint with NIX
Date: Thu, 9 Dec 2021 14:43:39 +0530 [thread overview]
Message-ID: <20211209091342.27017-5-ndabilpuram@marvell.com> (raw)
In-Reply-To: <20211209091342.27017-1-ndabilpuram@marvell.com>
From: Harman Kalra <hkalra@marvell.com>
An errata exists whereby, in certain cases NIX may use an
incorrect QINT_IDX for SQ interrupts. As a result, the
interrupt may not be delivered to software, or may not be
associated with the correct SQ.
When NIX uses an incorrect QINT_IDX :
1. NIX_LF_QINT(0..63)_CNT[COUNT] will be incremented for
incorrect QINT.
2. NIX_LF_QINT(0..63)_INT[INTR] will be set for incorrect
QINT.
Signed-off-by: Harman Kalra <hkalra@marvell.com>
---
drivers/common/cnxk/roc_nix_queue.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/common/cnxk/roc_nix_queue.c b/drivers/common/cnxk/roc_nix_queue.c
index c8c8401..4455fc1 100644
--- a/drivers/common/cnxk/roc_nix_queue.c
+++ b/drivers/common/cnxk/roc_nix_queue.c
@@ -680,7 +680,11 @@ sq_cn9k_init(struct nix *nix, struct roc_nix_sq *sq, uint32_t rr_quantum,
aq->sq.sq_int_ena |= BIT(NIX_SQINT_MNQ_ERR);
/* Many to one reduction */
- aq->sq.qint_idx = sq->qid % nix->qints;
+ /* Assigning QINT 0 to all the SQs, an errata exists where NIXTX can
+ * send incorrect QINT_IDX when reporting queue interrupt (QINT). This
+ * might result in software missing the interrupt.
+ */
+ aq->sq.qint_idx = 0;
}
static int
@@ -779,8 +783,11 @@ sq_init(struct nix *nix, struct roc_nix_sq *sq, uint32_t rr_quantum,
aq->sq.sq_int_ena |= BIT(NIX_SQINT_SEND_ERR);
aq->sq.sq_int_ena |= BIT(NIX_SQINT_MNQ_ERR);
- /* Many to one reduction */
- aq->sq.qint_idx = sq->qid % nix->qints;
+ /* Assigning QINT 0 to all the SQs, an errata exists where NIXTX can
+ * send incorrect QINT_IDX when reporting queue interrupt (QINT). This
+ * might result in software missing the interrupt.
+ */
+ aq->sq.qint_idx = 0;
}
static int
--
2.8.4
next prev parent reply other threads:[~2021-12-09 9:14 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-09 9:13 [PATCH 1/8] common/cnxk: fix shift offset for tl3 length disable Nithin Dabilpuram
2021-12-09 9:13 ` [PATCH 2/8] common/cnxk: use for loop in shaper profiles cleanup Nithin Dabilpuram
2022-01-19 16:20 ` Jerin Jacob
2021-12-09 9:13 ` [PATCH 3/8] common/cnxk: change order of frag sizes and infos Nithin Dabilpuram
2022-01-19 16:25 ` Jerin Jacob
2022-01-21 10:03 ` Ferruh Yigit
2021-12-09 9:13 ` [PATCH 4/8] common/cnxk: reset stale values on error debug registers Nithin Dabilpuram
2022-01-19 16:25 ` Jerin Jacob
2021-12-09 9:13 ` Nithin Dabilpuram [this message]
2022-01-19 16:28 ` [PATCH 5/8] common/cnxk: always use single qint with NIX Jerin Jacob
2021-12-09 9:13 ` [PATCH 6/8] common/cnxk: handle issues from static analysis Nithin Dabilpuram
2022-01-19 16:44 ` Jerin Jacob
2022-01-21 10:05 ` Ferruh Yigit
2021-12-09 9:13 ` [PATCH 7/8] net/cnxk: improve inbound inline error handling for cn9k Nithin Dabilpuram
2022-01-21 10:06 ` Ferruh Yigit
2021-12-09 9:13 ` [PATCH 8/8] net/cnxk: synchronize inline session create and destroy Nithin Dabilpuram
2022-01-19 16:45 ` Jerin Jacob
2022-01-19 16:15 ` [PATCH 1/8] common/cnxk: fix shift offset for tl3 length disable Jerin Jacob
2022-01-21 10:08 ` Ferruh Yigit
2022-01-21 10:24 ` Nithin Kumar Dabilpuram
2022-01-21 12:04 ` [PATCH v2 01/10] common/cnxk: fix shift offset for TL3 " Nithin Dabilpuram
2022-01-21 12:04 ` [PATCH v2 02/10] common/cnxk: use for loop in shaper profiles cleanup Nithin Dabilpuram
2022-01-21 12:04 ` [PATCH v2 03/10] common/cnxk: fix byte order of frag sizes and infos Nithin Dabilpuram
2022-01-21 12:04 ` [PATCH v2 04/10] common/cnxk: reset stale values on error debug registers Nithin Dabilpuram
2022-01-21 12:04 ` [PATCH v2 05/10] common/cnxk: always use single interrupt ID with NIX Nithin Dabilpuram
2022-01-21 17:16 ` Kevin Traynor
2022-01-23 7:45 ` Jerin Jacob
2022-01-21 12:04 ` [PATCH v2 06/10] common/cnxk: fix null pointer dereferences Nithin Dabilpuram
2022-01-21 12:04 ` [PATCH v2 07/10] common/cnxk: fix uninitialized variable issues Nithin Dabilpuram
2022-01-21 12:04 ` [PATCH v2 08/10] net/cnxk: improve inbound inline error handling for cn9k Nithin Dabilpuram
2022-01-21 12:04 ` [PATCH v2 09/10] common/cnxk: set UDP ports for IPsec UDP encapsulation Nithin Dabilpuram
2022-01-21 12:04 ` [PATCH v2 10/10] net/cnxk: synchronize inline session create and destroy Nithin Dabilpuram
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