From patchwork Mon Aug 17 15:12:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 265965 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1D483C433E3 for ; Mon, 17 Aug 2020 19:36:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E94A720674 for ; Mon, 17 Aug 2020 19:36:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597692988; bh=Uqy9v9exJLdbF5R32vYNL2jcC8xvFc/Zck+E9tLIs9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ovK3TAr9PdaIKupkXjuLF8TcTomddWh77OJNio17uxz3x3mtPbkCO36VvGMeL+k2l NAC0WBHoGCAdJVq1+8eeOU/ZeVY3bGaXqz15IYVya4vyOACbGpVoV74jEMxBBzHAER zV+m8WV5teteT4CcMz/1r946197mou8hCjVecb38= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392397AbgHQTgX (ORCPT ); Mon, 17 Aug 2020 15:36:23 -0400 Received: from mail.kernel.org ([198.145.29.99]:42830 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729660AbgHQP2i (ORCPT ); Mon, 17 Aug 2020 11:28:38 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6248523B6C; Mon, 17 Aug 2020 15:28:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597678117; bh=Uqy9v9exJLdbF5R32vYNL2jcC8xvFc/Zck+E9tLIs9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0o1ZrBdzoi5DIr48iALy/NoQg45ksuGj/MvSfsFUiiNK6bZWwDWCpSwDwo9i8W8df cPcOpOMxfQN6wa9TP/CnPXTUrJr/oqSe5brHegGWbr582HRjxqZaYk5FZkBjniuXZq UNvhHGHckzuqa7Pmpv7GTQKYqOaT2NUvfRhteK/k= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Steev Klimaszewski , Avri Altman , Bean Huo , Stanley Chu , "Martin K. Petersen" , Sasha Levin Subject: [PATCH 5.8 184/464] scsi: ufs: Disable WriteBooster capability for non-supported UFS devices Date: Mon, 17 Aug 2020 17:12:17 +0200 Message-Id: <20200817143842.638117050@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143833.737102804@linuxfoundation.org> References: <20200817143833.737102804@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Stanley Chu [ Upstream commit a7f1e69d4974666ea40886ee4801aebb2729ea81 ] If a UFS device is not qualified to use WriteBooster, either due to wrong UFS version or device-specific quirks, then the capability in host shall be disabled to prevent any WriteBooster operations in the future. Link: https://lore.kernel.org/r/20200625030430.25048-1-stanley.chu@mediatek.com Fixes: 3d17b9b5ab11 ("scsi: ufs: Add write booster feature support") Tested-by: Steev Klimaszewski Reviewed-by: Avri Altman Reviewed-by: Bean Huo Signed-off-by: Stanley Chu Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/ufs/ufshcd.c | 35 +++++++++++++++++++---------------- 1 file changed, 19 insertions(+), 16 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index ec93bec8e78d8..e412e43d23821 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -6818,20 +6818,30 @@ static int ufshcd_scsi_add_wlus(struct ufs_hba *hba) static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf) { + struct ufs_dev_info *dev_info = &hba->dev_info; u8 lun; u32 d_lu_wb_buf_alloc; if (!ufshcd_is_wb_allowed(hba)) return; + /* + * Probe WB only for UFS-2.2 and UFS-3.1 (and later) devices or + * UFS devices with quirk UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES + * enabled + */ + if (!(dev_info->wspecversion >= 0x310 || + dev_info->wspecversion == 0x220 || + (hba->dev_quirks & UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES))) + goto wb_disabled; if (hba->desc_size.dev_desc < DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP + 4) goto wb_disabled; - hba->dev_info.d_ext_ufs_feature_sup = + dev_info->d_ext_ufs_feature_sup = get_unaligned_be32(desc_buf + DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP); - if (!(hba->dev_info.d_ext_ufs_feature_sup & UFS_DEV_WRITE_BOOSTER_SUP)) + if (!(dev_info->d_ext_ufs_feature_sup & UFS_DEV_WRITE_BOOSTER_SUP)) goto wb_disabled; /* @@ -6840,17 +6850,17 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf) * a max of 1 lun would have wb buffer configured. * Now only shared buffer mode is supported. */ - hba->dev_info.b_wb_buffer_type = + dev_info->b_wb_buffer_type = desc_buf[DEVICE_DESC_PARAM_WB_TYPE]; - hba->dev_info.b_presrv_uspc_en = + dev_info->b_presrv_uspc_en = desc_buf[DEVICE_DESC_PARAM_WB_PRESRV_USRSPC_EN]; - if (hba->dev_info.b_wb_buffer_type == WB_BUF_MODE_SHARED) { - hba->dev_info.d_wb_alloc_units = + if (dev_info->b_wb_buffer_type == WB_BUF_MODE_SHARED) { + dev_info->d_wb_alloc_units = get_unaligned_be32(desc_buf + DEVICE_DESC_PARAM_WB_SHARED_ALLOC_UNITS); - if (!hba->dev_info.d_wb_alloc_units) + if (!dev_info->d_wb_alloc_units) goto wb_disabled; } else { for (lun = 0; lun < UFS_UPIU_MAX_WB_LUN_ID; lun++) { @@ -6861,7 +6871,7 @@ static void ufshcd_wb_probe(struct ufs_hba *hba, u8 *desc_buf) (u8 *)&d_lu_wb_buf_alloc, sizeof(d_lu_wb_buf_alloc)); if (d_lu_wb_buf_alloc) { - hba->dev_info.wb_dedicated_lu = lun; + dev_info->wb_dedicated_lu = lun; break; } } @@ -6950,14 +6960,7 @@ static int ufs_get_device_desc(struct ufs_hba *hba) ufs_fixup_device_setup(hba); - /* - * Probe WB only for UFS-3.1 devices or UFS devices with quirk - * UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES enabled - */ - if (dev_info->wspecversion >= 0x310 || - dev_info->wspecversion == 0x220 || - (hba->dev_quirks & UFS_DEVICE_QUIRK_SUPPORT_EXTENDED_FEATURES)) - ufshcd_wb_probe(hba, desc_buf); + ufshcd_wb_probe(hba, desc_buf); /* * ufshcd_read_string_desc returns size of the string