From patchwork Mon Oct 16 20:46:03 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shiraz Saleem X-Patchwork-Id: 10009857 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 30DC360230 for ; Mon, 16 Oct 2017 20:46:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 233F828692 for ; Mon, 16 Oct 2017 20:46:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 171F5286C6; Mon, 16 Oct 2017 20:46:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C0D1828692 for ; Mon, 16 Oct 2017 20:46:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756469AbdJPUq3 (ORCPT ); Mon, 16 Oct 2017 16:46:29 -0400 Received: from mga02.intel.com ([134.134.136.20]:22112 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757440AbdJPUqX (ORCPT ); Mon, 16 Oct 2017 16:46:23 -0400 Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Oct 2017 13:46:22 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.43,388,1503385200"; d="scan'208";a="139047976" Received: from ssaleem-mobl4.amr.corp.intel.com ([10.122.33.132]) by orsmga004.jf.intel.com with ESMTP; 16 Oct 2017 13:46:22 -0700 From: Shiraz Saleem To: dledford@redhat.com Cc: linux-rdma@vger.kernel.org, e1000-rdma@lists.sourceforge.net, Christopher Bednarz , Shiraz Saleem Subject: [PATCH for-next 10/12] i40iw: Clear CQP Head/Tail during initialization Date: Mon, 16 Oct 2017 15:46:03 -0500 Message-Id: <20171016204605.37512-11-shiraz.saleem@intel.com> X-Mailer: git-send-email 2.8.3 In-Reply-To: <20171016204605.37512-1-shiraz.saleem@intel.com> References: <20171016204605.37512-1-shiraz.saleem@intel.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Christopher Bednarz 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 Signed-off-by: Shiraz Saleem --- 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,