From patchwork Thu Jun 9 11:52:28 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Hunter X-Patchwork-Id: 9166857 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 376AD60467 for ; Thu, 9 Jun 2016 11:58:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 27F3D28340 for ; Thu, 9 Jun 2016 11:58:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1AEF928345; Thu, 9 Jun 2016 11:58:42 +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 CA0DD28340 for ; Thu, 9 Jun 2016 11:58:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750796AbcFIL6k (ORCPT ); Thu, 9 Jun 2016 07:58:40 -0400 Received: from mga01.intel.com ([192.55.52.88]:48207 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750772AbcFIL6j (ORCPT ); Thu, 9 Jun 2016 07:58:39 -0400 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 09 Jun 2016 04:58:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,444,1459839600"; d="scan'208";a="998504043" Received: from ahunter-desktop.fi.intel.com ([10.237.72.168]) by fmsmga002.fm.intel.com with ESMTP; 09 Jun 2016 04:58:35 -0700 From: Adrian Hunter To: Ulf Hansson Cc: linux-mmc , Alex Lemberg , Mateusz Nowak , Yuliy Izrailov , Jaehoon Chung , Dong Aisheng , Das Asutosh , Zhangfei Gao , Sujit Reddy Thumma , Dorfman Konstantin , David Griego , Sahitya Tummala , Harjani Ritesh Subject: [PATCH RFC 28/46] mmc: queue: Introduce queue depth Date: Thu, 9 Jun 2016 14:52:28 +0300 Message-Id: <1465473166-22532-29-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1465473166-22532-1-git-send-email-adrian.hunter@intel.com> References: <1465473166-22532-1-git-send-email-adrian.hunter@intel.com> Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a mmc_queue member to record the size of the queue, which currently supports 2 requests on-the-go at a time. Signed-off-by: Adrian Hunter --- drivers/mmc/card/queue.c | 4 ++++ drivers/mmc/card/queue.h | 1 + 2 files changed, 5 insertions(+) diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index b10bae73d157..1a8e5d45f74d 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -293,6 +293,7 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, if (!mq->queue) return -ENOMEM; + mq->qdepth = 2; mq->mqrq_cur = &mq->mqrq[0]; mq->mqrq_prev = &mq->mqrq[1]; mq->queue->queuedata = mq; @@ -390,6 +391,9 @@ int mmc_packed_init(struct mmc_queue *mq, struct mmc_card *card) struct mmc_queue_req *mqrq_prev = &mq->mqrq[1]; int ret = 0; + /* Queue depth is only ever 2 with packed commands */ + if (mq->qdepth != 2) + return -EINVAL; mqrq_cur->packed = kzalloc(sizeof(struct mmc_packed), GFP_KERNEL); if (!mqrq_cur->packed) { diff --git a/drivers/mmc/card/queue.h b/drivers/mmc/card/queue.h index 872c82a83729..b687a90c4ea1 100644 --- a/drivers/mmc/card/queue.h +++ b/drivers/mmc/card/queue.h @@ -59,6 +59,7 @@ struct mmc_queue { struct mmc_queue_req mqrq[2]; struct mmc_queue_req *mqrq_cur; struct mmc_queue_req *mqrq_prev; + int qdepth; }; extern int mmc_init_queue(struct mmc_queue *, struct mmc_card *, spinlock_t *,