From patchwork Mon Feb 11 13:32:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Gonzalez X-Patchwork-Id: 10805773 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C4420746 for ; Mon, 11 Feb 2019 13:35:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B27162A46F for ; Mon, 11 Feb 2019 13:35:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A57FE2A482; Mon, 11 Feb 2019 13:35:39 +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=-7.9 required=2.0 tests=BAYES_00,FREEMAIL_FROM, MAILING_LIST_MULTI,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 04EB32A480 for ; Mon, 11 Feb 2019 13:35:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727906AbfBKNfi (ORCPT ); Mon, 11 Feb 2019 08:35:38 -0500 Received: from smtp3-g21.free.fr ([212.27.42.3]:5982 "EHLO smtp3-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727601AbfBKNfg (ORCPT ); Mon, 11 Feb 2019 08:35:36 -0500 Received: from [192.168.108.68] (unknown [213.36.7.13]) (Authenticated sender: marc.w.gonzalez) by smtp3-g21.free.fr (Postfix) with ESMTPSA id 3180613F8AE; Mon, 11 Feb 2019 14:34:43 +0100 (CET) Subject: [PATCH v5 1/2] scsi: ufs: Do not disable vccq in UFSHC driver From: Marc Gonzalez To: SCSI , LKML Cc: Jeffrey Hugo , Bjorn Andersson , Evan Green , Douglas Anderson , Alim Akhtar , Avri Altman , Pedro Sousa , Joao Pinto , Mark Brown , Liam Girdwood , Rob Herring , Bart Van Assche , Stanislav Nijnikov , Alex Lemberg , Ohad Sharabi , Venkat Gopalakrishnan , Subhash Jadavani , Yaniv Gardi , Gilad Broner , Raviv Shvili , Hannes Reinecke , Kyuho Choi , Martin Petersen References: <494cd639-89a7-8868-b63a-ea7cdcba9777@free.fr> Message-ID: Date: Mon, 11 Feb 2019 14:32:15 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: <494cd639-89a7-8868-b63a-ea7cdcba9777@free.fr> Content-Language: en-US Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Commit 60f0187031c0 ("disable vccq if it's not needed by UFS device") introduced a small power optimization as a driver quirk: ignore the vccq load specified in the UFSHC DT node when said host controller is connected to specific Flash chips (Samsung and Hynix currently). Unfortunately, this optimization breaks UFS on systems where vccq powers not only the Flash chip, but the host controller as well, such as APQ8098 MEDIABOX or MTP8998: [ 3.929877] ufshcd-qcom 1da4000.ufshc: ufshcd_query_attr: opcode 0x04 for idn 13 failed, index 0, err = -11 [ 5.433815] ufshcd-qcom 1da4000.ufshc: ufshcd_query_attr: opcode 0x04 for idn 13 failed, index 0, err = -11 [ 6.937771] ufshcd-qcom 1da4000.ufshc: ufshcd_query_attr: opcode 0x04 for idn 13 failed, index 0, err = -11 [ 6.937866] ufshcd-qcom 1da4000.ufshc: ufshcd_query_attr_retry: query attribute, idn 13, failed with error -11 after 3 retires [ 6.946412] ufshcd-qcom 1da4000.ufshc: ufshcd_disable_auto_bkops: failed to enable exception event -11 [ 6.957972] ufshcd-qcom 1da4000.ufshc: dme-peer-get: attr-id 0x1587 failed 3 retries [ 6.967181] ufshcd-qcom 1da4000.ufshc: dme-peer-get: attr-id 0x1586 failed 3 retries [ 6.975025] ufshcd-qcom 1da4000.ufshc: ufshcd_get_max_pwr_mode: invalid max pwm tx gear read = 0 [ 6.982755] ufshcd-qcom 1da4000.ufshc: ufshcd_probe_hba: Failed getting max supported power mode [ 8.505770] ufshcd-qcom 1da4000.ufshc: ufshcd_query_flag: Sending flag query for idn 3 failed, err = -11 [ 10.009807] ufshcd-qcom 1da4000.ufshc: ufshcd_query_flag: Sending flag query for idn 3 failed, err = -11 [ 11.513766] ufshcd-qcom 1da4000.ufshc: ufshcd_query_flag: Sending flag query for idn 3 failed, err = -11 [ 11.513861] ufshcd-qcom 1da4000.ufshc: ufshcd_query_flag_retry: query attribute, opcode 5, idn 3, failed with error -11 after 3 retires [ 13.049807] ufshcd-qcom 1da4000.ufshc: __ufshcd_query_descriptor: opcode 0x01 for idn 8 failed, index 0, err = -11 [ 14.553768] ufshcd-qcom 1da4000.ufshc: __ufshcd_query_descriptor: opcode 0x01 for idn 8 failed, index 0, err = -11 [ 16.057767] ufshcd-qcom 1da4000.ufshc: __ufshcd_query_descriptor: opcode 0x01 for idn 8 failed, index 0, err = -11 [ 16.057872] ufshcd-qcom 1da4000.ufshc: ufshcd_read_desc_param: Failed reading descriptor. desc_id 8, desc_index 0, param_offset 0, ret -11 [ 16.067109] ufshcd-qcom 1da4000.ufshc: ufshcd_init_icc_levels: Failed reading power descriptor.len = 98 ret = -11 [ 37.073787] ufshcd-qcom 1da4000.ufshc: link startup failed 1 In my opinion, the rationale for the original patch is questionable. If neither the UFSHC, nor the Flash chip, require any load from vccq, then that power rail should simply not be specified at all in the DT. Working around that fact in the driver is detrimental, as evidenced by the failure to initialize the host controller on MSM8998. Revert the original patch, and clean up loose ends in the next patch. Relevant patches: 60f0187031c05e04cbadffb62f557d0ff3564490 c58ab7aab71e2c783087115f0ce1623c2fdcf0b2 46c1cf706076500cdcde3445be97233793eec7f1 Signed-off-by: Marc Gonzalez Acked-by: Avri Altman --- drivers/scsi/ufs/ufs.h | 1 - drivers/scsi/ufs/ufshcd.c | 59 +++------------------------------------ 2 files changed, 4 insertions(+), 56 deletions(-) diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h index 6d176815e6ce..21e4ccb5ba6e 100644 --- a/drivers/scsi/ufs/ufs.h +++ b/drivers/scsi/ufs/ufs.h @@ -514,7 +514,6 @@ struct ufs_vreg { struct regulator *reg; const char *name; bool enabled; - bool unused; int min_uV; int max_uV; int min_uA; diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 5ca4581e60d5..a5bfcf04fdba 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -251,7 +251,6 @@ static int ufshcd_probe_hba(struct ufs_hba *hba); static int __ufshcd_setup_clocks(struct ufs_hba *hba, bool on, bool skip_ref_clk); static int ufshcd_setup_clocks(struct ufs_hba *hba, bool on); -static int ufshcd_set_vccq_rail_unused(struct ufs_hba *hba, bool unused); static int ufshcd_uic_hibern8_exit(struct ufs_hba *hba); static int ufshcd_uic_hibern8_enter(struct ufs_hba *hba); static inline void ufshcd_add_delay_before_dme_cmd(struct ufs_hba *hba); @@ -6830,11 +6829,6 @@ static int ufshcd_probe_hba(struct ufs_hba *hba) ufs_fixup_device_setup(hba, &card); ufshcd_tune_unipro_params(hba); - ret = ufshcd_set_vccq_rail_unused(hba, - (hba->dev_quirks & UFS_DEVICE_NO_VCCQ) ? true : false); - if (ret) - goto out; - /* UFS device is also active now */ ufshcd_set_ufs_dev_active(hba); ufshcd_force_reset_auto_bkops(hba); @@ -7018,24 +7012,13 @@ static int ufshcd_config_vreg_load(struct device *dev, struct ufs_vreg *vreg, static inline int ufshcd_config_vreg_lpm(struct ufs_hba *hba, struct ufs_vreg *vreg) { - if (!vreg) - return 0; - else if (vreg->unused) - return 0; - else - return ufshcd_config_vreg_load(hba->dev, vreg, - UFS_VREG_LPM_LOAD_UA); + return ufshcd_config_vreg_load(hba->dev, vreg, UFS_VREG_LPM_LOAD_UA); } static inline int ufshcd_config_vreg_hpm(struct ufs_hba *hba, struct ufs_vreg *vreg) { - if (!vreg) - return 0; - else if (vreg->unused) - return 0; - else - return ufshcd_config_vreg_load(hba->dev, vreg, vreg->max_uA); + return ufshcd_config_vreg_load(hba->dev, vreg, vreg->max_uA); } static int ufshcd_config_vreg(struct device *dev, @@ -7073,9 +7056,7 @@ static int ufshcd_enable_vreg(struct device *dev, struct ufs_vreg *vreg) { int ret = 0; - if (!vreg) - goto out; - else if (vreg->enabled || vreg->unused) + if (!vreg || vreg->enabled) goto out; ret = ufshcd_config_vreg(dev, vreg, true); @@ -7095,9 +7076,7 @@ static int ufshcd_disable_vreg(struct device *dev, struct ufs_vreg *vreg) { int ret = 0; - if (!vreg) - goto out; - else if (!vreg->enabled || vreg->unused) + if (!vreg || !vreg->enabled) goto out; ret = regulator_disable(vreg->reg); @@ -7203,36 +7182,6 @@ static int ufshcd_init_hba_vreg(struct ufs_hba *hba) return 0; } -static int ufshcd_set_vccq_rail_unused(struct ufs_hba *hba, bool unused) -{ - int ret = 0; - struct ufs_vreg_info *info = &hba->vreg_info; - - if (!info) - goto out; - else if (!info->vccq) - goto out; - - if (unused) { - /* shut off the rail here */ - ret = ufshcd_toggle_vreg(hba->dev, info->vccq, false); - /* - * Mark this rail as no longer used, so it doesn't get enabled - * later by mistake - */ - if (!ret) - info->vccq->unused = true; - } else { - /* - * rail should have been already enabled hence just make sure - * that unused flag is cleared. - */ - info->vccq->unused = false; - } -out: - return ret; -} - static int __ufshcd_setup_clocks(struct ufs_hba *hba, bool on, bool skip_ref_clk) { From patchwork Mon Feb 11 13:33:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Gonzalez X-Patchwork-Id: 10805813 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D1EE5746 for ; Mon, 11 Feb 2019 13:37:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BE9322A4A4 for ; Mon, 11 Feb 2019 13:37:14 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B22532A4F2; Mon, 11 Feb 2019 13:37:14 +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=-7.9 required=2.0 tests=BAYES_00,FREEMAIL_FROM, MAILING_LIST_MULTI,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 4934B2A4AE for ; Mon, 11 Feb 2019 13:37:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727927AbfBKNga (ORCPT ); Mon, 11 Feb 2019 08:36:30 -0500 Received: from smtp3-g21.free.fr ([212.27.42.3]:11976 "EHLO smtp3-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728135AbfBKNga (ORCPT ); Mon, 11 Feb 2019 08:36:30 -0500 Received: from [192.168.108.68] (unknown [213.36.7.13]) (Authenticated sender: marc.w.gonzalez) by smtp3-g21.free.fr (Postfix) with ESMTPSA id C400A13F8AD; Mon, 11 Feb 2019 14:35:34 +0100 (CET) Subject: [PATCH v5 2/2] scsi: ufs: Remove unused device quirks From: Marc Gonzalez To: SCSI , LKML Cc: Jeffrey Hugo , Bjorn Andersson , Evan Green , Douglas Anderson , Alim Akhtar , Avri Altman , Pedro Sousa , Joao Pinto , Mark Brown , Liam Girdwood , Rob Herring , Bart Van Assche , Stanislav Nijnikov , Alex Lemberg , Ohad Sharabi , Venkat Gopalakrishnan , Subhash Jadavani , Yaniv Gardi , Gilad Broner , Raviv Shvili , Hannes Reinecke , Kyuho Choi , Martin Petersen References: <494cd639-89a7-8868-b63a-ea7cdcba9777@free.fr> Message-ID: <43265449-30e1-d514-3ffd-fc38530dac67@free.fr> Date: Mon, 11 Feb 2019 14:33:28 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: <494cd639-89a7-8868-b63a-ea7cdcba9777@free.fr> Content-Language: en-US Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The UFSHC driver defines a few quirks that are not used anywhere: UFS_DEVICE_QUIRK_BROKEN_LCC UFS_DEVICE_NO_VCCQ UFS_DEVICE_QUIRK_NO_LINK_OFF UFS_DEVICE_NO_FASTAUTO Let's remove them. Signed-off-by: Marc Gonzalez Acked-by: Avri Altman Reviewed-by: Evan Green --- drivers/scsi/ufs/ufs_quirks.h | 29 ----------------------------- drivers/scsi/ufs/ufshcd.c | 4 ---- 2 files changed, 33 deletions(-) diff --git a/drivers/scsi/ufs/ufs_quirks.h b/drivers/scsi/ufs/ufs_quirks.h index 5d2dfdb41a6f..a9bbd34d6b16 100644 --- a/drivers/scsi/ufs/ufs_quirks.h +++ b/drivers/scsi/ufs/ufs_quirks.h @@ -44,21 +44,6 @@ struct ufs_dev_fix { .quirk = (_quirk), \ } -/* - * If UFS device is having issue in processing LCC (Line Control - * Command) coming from UFS host controller then enable this quirk. - * When this quirk is enabled, host controller driver should disable - * the LCC transmission on UFS host controller (by clearing - * TX_LCC_ENABLE attribute of host to 0). - */ -#define UFS_DEVICE_QUIRK_BROKEN_LCC (1 << 0) - -/* - * Some UFS devices don't need VCCQ rail for device operations. Enabling this - * quirk for such devices will make sure that VCCQ rail is not voted. - */ -#define UFS_DEVICE_NO_VCCQ (1 << 1) - /* * Some vendor's UFS device sends back to back NACs for the DL data frames * causing the host controller to raise the DFES error status. Sometimes @@ -84,13 +69,6 @@ struct ufs_dev_fix { */ #define UFS_DEVICE_QUIRK_RECOVERY_FROM_DL_NAC_ERRORS (1 << 2) -/* - * Some UFS devices may not work properly after resume if the link was kept - * in off state during suspend. Enabling this quirk will not allow the - * link to be kept in off state during suspend. - */ -#define UFS_DEVICE_QUIRK_NO_LINK_OFF (1 << 3) - /* * Few Toshiba UFS device models advertise RX_MIN_ACTIVATETIME_CAPABILITY as * 600us which may not be enough for reliable hibern8 exit hardware sequence @@ -100,13 +78,6 @@ struct ufs_dev_fix { */ #define UFS_DEVICE_QUIRK_PA_TACTIVATE (1 << 4) -/* - * Some UFS memory devices may have really low read/write throughput in - * FAST AUTO mode, enable this quirk to make sure that FAST AUTO mode is - * never enabled for such devices. - */ -#define UFS_DEVICE_NO_FASTAUTO (1 << 5) - /* * It seems some UFS devices may keep drawing more than sleep current * (atleast for 500us) from UFS rails (especially from VCCQ rail). diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index a5bfcf04fdba..54ed1f8db1bf 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -219,11 +219,8 @@ static struct ufs_dev_fix ufs_fixups[] = { /* UFS cards deviations table */ UFS_FIX(UFS_VENDOR_SAMSUNG, UFS_ANY_MODEL, UFS_DEVICE_QUIRK_DELAY_BEFORE_LPM), - UFS_FIX(UFS_VENDOR_SAMSUNG, UFS_ANY_MODEL, UFS_DEVICE_NO_VCCQ), UFS_FIX(UFS_VENDOR_SAMSUNG, UFS_ANY_MODEL, UFS_DEVICE_QUIRK_RECOVERY_FROM_DL_NAC_ERRORS), - UFS_FIX(UFS_VENDOR_SAMSUNG, UFS_ANY_MODEL, - UFS_DEVICE_NO_FASTAUTO), UFS_FIX(UFS_VENDOR_SAMSUNG, UFS_ANY_MODEL, UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE), UFS_FIX(UFS_VENDOR_TOSHIBA, UFS_ANY_MODEL, @@ -232,7 +229,6 @@ static struct ufs_dev_fix ufs_fixups[] = { UFS_DEVICE_QUIRK_PA_TACTIVATE), UFS_FIX(UFS_VENDOR_TOSHIBA, "THGLF2G9D8KBADG", UFS_DEVICE_QUIRK_PA_TACTIVATE), - UFS_FIX(UFS_VENDOR_SKHYNIX, UFS_ANY_MODEL, UFS_DEVICE_NO_VCCQ), UFS_FIX(UFS_VENDOR_SKHYNIX, UFS_ANY_MODEL, UFS_DEVICE_QUIRK_HOST_PA_SAVECONFIGTIME), UFS_FIX(UFS_VENDOR_SKHYNIX, "hB8aL1" /*H28U62301AMR*/,