All of lore.kernel.org
 help / color / mirror / Atom feed
From: Shiraz Saleem <shiraz.saleem-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	e1000-rdma-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	Christopher Bednarz
	<christopher.n.bednarz-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Shiraz Saleem
	<shiraz.saleem-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Subject: [PATCH for-next 10/12] i40iw: Clear CQP Head/Tail during initialization
Date: Mon, 16 Oct 2017 15:46:03 -0500	[thread overview]
Message-ID: <20171016204605.37512-11-shiraz.saleem@intel.com> (raw)
In-Reply-To: <20171016204605.37512-1-shiraz.saleem-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>

From: Christopher Bednarz <christopher.n.bednarz-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>

Clear Control Queue Pair (CQP) Head/Tail on CQP
initialization as during an adapter reset, these
values are not reinitialized. Tail is cleared by
writing 0 to CQP's tail register. Head is cleared
by writing 0 to CQP's doorbell register.

Fixes: 86dbcd0f12e9 ("i40iw: add file to handle cqp calls")
Signed-off-by: Christopher Bednarz <christopher.n.bednarz-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Shiraz Saleem <shiraz.saleem-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
 drivers/infiniband/hw/i40iw/i40iw_ctrl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/infiniband/hw/i40iw/i40iw_ctrl.c b/drivers/infiniband/hw/i40iw/i40iw_ctrl.c
index c790f8b..70d86bc 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_ctrl.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_ctrl.c
@@ -483,6 +483,9 @@ static enum i40iw_status_code i40iw_sc_cqp_init(struct i40iw_sc_cqp *cqp,
 	cqp->dev->cqp_cmd_stats[OP_REQUESTED_COMMANDS] = 0;
 	cqp->dev->cqp_cmd_stats[OP_COMPLETED_COMMANDS] = 0;
 
+	i40iw_wr32(cqp->dev->hw, I40E_PFPE_CQPTAIL, 0);
+	i40iw_wr32(cqp->dev->hw, I40E_PFPE_CQPDB, 0);
+
 	i40iw_debug(cqp->dev, I40IW_DEBUG_WQE,
 		    "%s: sq_size[%04d] hw_sq_size[%04d] sq_base[%p] sq_pa[%llxh] cqp[%p] polarity[x%04X]\n",
 		    __func__, cqp->sq_size, cqp->hw_sq_size,
-- 
2.8.3

--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

  parent reply	other threads:[~2017-10-16 20:46 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-16 20:45 [PATCH for-next 00/12] i40iw patches for 4.15 Shiraz Saleem
     [not found] ` <20171016204605.37512-1-shiraz.saleem-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-10-16 20:45   ` [PATCH for-next 01/12] i40iw: Cleanup AE processing Shiraz Saleem
2017-10-16 20:45   ` [PATCH for-next 02/12] i40iw: Ignore AE source field in AEQE for some AEs Shiraz Saleem
2017-10-16 20:45   ` [PATCH for-next 03/12] i40iw: Remove unused static_rsrc from i40iw_create_qp_info Shiraz Saleem
2017-10-16 20:45   ` [PATCH for-next 04/12] i40iw: Move exception_lan_queue to VSI structure Shiraz Saleem
2017-10-16 20:45   ` [PATCH for-next 05/12] i40iw: Remove unused structures Shiraz Saleem
2017-10-16 20:45   ` [PATCH for-next 06/12] i40iw: Account for IPv6 header when setting MSS Shiraz Saleem
2017-10-16 20:46   ` [PATCH for-next 07/12] i40iw: Move ceq_valid to i40iw_sc_dev structure Shiraz Saleem
2017-10-16 20:46   ` [PATCH for-next 08/12] i40iw: Reinitialize IEQ on MTU change Shiraz Saleem
     [not found]     ` <20171016204605.37512-9-shiraz.saleem-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-10-17  9:15       ` Kalderon, Michal
     [not found]         ` <CY1PR0701MB20123ECBE7D8235BD2F9FD8D884C0-UpKza+2NMNLHMJvQ0dyT705OhdzP3rhOnBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2017-10-17 15:55           ` Shiraz Saleem
2017-10-16 20:46   ` [PATCH for-next 09/12] i40iw: Refactor queue depth calculation Shiraz Saleem
2017-10-16 20:46   ` Shiraz Saleem [this message]
2017-10-16 20:46   ` [PATCH for-next 11/12] i40iw: Remove UDA QP from QoS list if creation fails Shiraz Saleem
2017-10-16 20:46   ` [PATCH for-next 12/12] i40iw: Move cqp_cmd_head init to CQP initialization Shiraz Saleem
2017-10-18 17:30   ` [PATCH for-next 00/12] i40iw patches for 4.15 Doug Ledford

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20171016204605.37512-11-shiraz.saleem@intel.com \
    --to=shiraz.saleem-ral2jqcrhueavxtiumwx3w@public.gmane.org \
    --cc=christopher.n.bednarz-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org \
    --cc=dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org \
    --cc=e1000-rdma-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org \
    --cc=linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.