From patchwork Fri Jul 8 10:22:58 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Hunter X-Patchwork-Id: 9220421 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 63C6860572 for ; Fri, 8 Jul 2016 10:28:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5560028684 for ; Fri, 8 Jul 2016 10:28:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 49FDC28689; Fri, 8 Jul 2016 10:28:44 +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 E870328684 for ; Fri, 8 Jul 2016 10:28:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754470AbcGHK2i (ORCPT ); Fri, 8 Jul 2016 06:28:38 -0400 Received: from mga03.intel.com ([134.134.136.65]:45373 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754501AbcGHK2h (ORCPT ); Fri, 8 Jul 2016 06:28:37 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga103.jf.intel.com with ESMTP; 08 Jul 2016 03:28:37 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,329,1464678000"; d="scan'208";a="1003105079" Received: from ahunter-desktop.fi.intel.com ([10.237.72.168]) by fmsmga001.fm.intel.com with ESMTP; 08 Jul 2016 03:28:33 -0700 From: Adrian Hunter To: Ulf Hansson Cc: linux-mmc , Alex Lemberg , Mateusz Nowak , Yuliy Izrailov , Jaehoon Chung , Dong Aisheng , Das Asutosh , Zhangfei Gao , Dorfman Konstantin , David Griego , Sahitya Tummala , Harjani Ritesh , Venu Byravarasu Subject: [PATCH V3 17/30] mmc: block: Disable Command Queue while RPMB is used Date: Fri, 8 Jul 2016 13:22:58 +0300 Message-Id: <1467973391-29221-18-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1467973391-29221-1-git-send-email-adrian.hunter@intel.com> References: <1467973391-29221-1-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 RPMB does not allow Command Queue commands. Disable and re-enable the Command Queue when switching. Note that the driver only switches partitions when the queue is empty. Signed-off-by: Adrian Hunter --- drivers/mmc/card/block.c | 46 ++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 38 insertions(+), 8 deletions(-) diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index a21997c04c99..9be95317651d 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -744,10 +744,41 @@ static const struct block_device_operations mmc_bdops = { #endif }; +static int mmc_blk_part_switch_pre(struct mmc_card *card, + unsigned int part_type) +{ + int ret; + + if (part_type == EXT_CSD_PART_CONFIG_ACC_RPMB) { + if (card->ext_csd.cmdq_en) { + ret = mmc_cmdq_disable(card); + if (ret) + return ret; + } + mmc_retune_pause(card->host); + } + + return 0; +} + +static int mmc_blk_part_switch_post(struct mmc_card *card, + unsigned int part_type) +{ + int ret = 0; + + if (part_type == EXT_CSD_PART_CONFIG_ACC_RPMB) { + mmc_retune_unpause(card->host); + if (card->reenable_cmdq && !card->ext_csd.cmdq_en) + ret = mmc_cmdq_enable(card); + } + + return ret; +} + static inline int mmc_blk_part_switch(struct mmc_card *card, struct mmc_blk_data *md) { - int ret; + int ret = 0; struct mmc_blk_data *main_md = dev_get_drvdata(&card->dev); if (main_md->part_curr == md->part_type) @@ -756,8 +787,9 @@ static inline int mmc_blk_part_switch(struct mmc_card *card, if (mmc_card_mmc(card)) { u8 part_config = card->ext_csd.part_config; - if (md->part_type == EXT_CSD_PART_CONFIG_ACC_RPMB) - mmc_retune_pause(card->host); + ret = mmc_blk_part_switch_pre(card, md->part_type); + if (ret) + return ret; part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; part_config |= md->part_type; @@ -766,19 +798,17 @@ static inline int mmc_blk_part_switch(struct mmc_card *card, EXT_CSD_PART_CONFIG, part_config, card->ext_csd.part_time); if (ret) { - if (md->part_type == EXT_CSD_PART_CONFIG_ACC_RPMB) - mmc_retune_unpause(card->host); + mmc_blk_part_switch_post(card, md->part_type); return ret; } card->ext_csd.part_config = part_config; - if (main_md->part_curr == EXT_CSD_PART_CONFIG_ACC_RPMB) - mmc_retune_unpause(card->host); + ret = mmc_blk_part_switch_post(card, main_md->part_curr); } main_md->part_curr = md->part_type; - return 0; + return ret; } static u32 mmc_sd_num_wr_blocks(struct mmc_card *card)