From patchwork Mon Jun 28 13:34:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kepplinger X-Patchwork-Id: 468148 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED 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 56CECC49EB7 for ; Mon, 28 Jun 2021 13:35:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4579361C6C for ; Mon, 28 Jun 2021 13:35:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232230AbhF1NhY (ORCPT ); Mon, 28 Jun 2021 09:37:24 -0400 Received: from comms.puri.sm ([159.203.221.185]:47356 "EHLO comms.puri.sm" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232087AbhF1NhA (ORCPT ); Mon, 28 Jun 2021 09:37:00 -0400 Received: from localhost (localhost [127.0.0.1]) by comms.puri.sm (Postfix) with ESMTP id 8A547E01BB; Mon, 28 Jun 2021 06:34:33 -0700 (PDT) Received: from comms.puri.sm ([127.0.0.1]) by localhost (comms.puri.sm [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XCCfshehQNc1; Mon, 28 Jun 2021 06:34:32 -0700 (PDT) From: Martin Kepplinger To: martin.kepplinger@puri.sm Cc: bvanassche@acm.org, jejb@linux.ibm.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-scsi@vger.kernel.org, martin.petersen@oracle.com, stern@rowland.harvard.edu Subject: [PATCH v4 1/3] scsi: devinfo: add new flag BLIST_MEDIA_CHANGE Date: Mon, 28 Jun 2021 15:34:10 +0200 Message-Id: <20210628133412.1172068-2-martin.kepplinger@puri.sm> In-Reply-To: <20210628133412.1172068-1-martin.kepplinger@puri.sm> References: <20210628133412.1172068-1-martin.kepplinger@puri.sm> Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org add a new flag for devices that issue MEDIA CHANGE unit attentions when actually no medium changed. Drivers can then act accordingly in case they need to work around it, i.e. in resume(). Signed-off-by: Martin Kepplinger Reviewed-by: Bart Van Assche --- include/scsi/scsi_devinfo.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h index 3fdb322d4c4b..766fa876598e 100644 --- a/include/scsi/scsi_devinfo.h +++ b/include/scsi/scsi_devinfo.h @@ -28,7 +28,8 @@ #define BLIST_LARGELUN ((__force blist_flags_t)(1ULL << 9)) /* override additional length field */ #define BLIST_INQUIRY_36 ((__force blist_flags_t)(1ULL << 10)) -#define __BLIST_UNUSED_11 ((__force blist_flags_t)(1ULL << 11)) +/* ignore one MEDIA CHANGE unit attention after resuming from runtime suspend */ +#define BLIST_MEDIA_CHANGE ((__force blist_flags_t)(1ULL << 11)) /* do not do automatic start on add */ #define BLIST_NOSTARTONADD ((__force blist_flags_t)(1ULL << 12)) #define __BLIST_UNUSED_13 ((__force blist_flags_t)(1ULL << 13)) @@ -73,8 +74,7 @@ #define __BLIST_HIGH_UNUSED (~(__BLIST_LAST_USED | \ (__force blist_flags_t) \ ((__force __u64)__BLIST_LAST_USED - 1ULL))) -#define __BLIST_UNUSED_MASK (__BLIST_UNUSED_11 | \ - __BLIST_UNUSED_13 | \ +#define __BLIST_UNUSED_MASK (__BLIST_UNUSED_13 | \ __BLIST_UNUSED_14 | \ __BLIST_UNUSED_15 | \ __BLIST_UNUSED_16 | \ From patchwork Mon Jun 28 13:34:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kepplinger X-Patchwork-Id: 468539 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED 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 087CCC2B9F4 for ; Mon, 28 Jun 2021 13:35:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E91826145F for ; Mon, 28 Jun 2021 13:35:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232240AbhF1Nh0 (ORCPT ); Mon, 28 Jun 2021 09:37:26 -0400 Received: from comms.puri.sm ([159.203.221.185]:47374 "EHLO comms.puri.sm" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232141AbhF1NhB (ORCPT ); Mon, 28 Jun 2021 09:37:01 -0400 Received: from localhost (localhost [127.0.0.1]) by comms.puri.sm (Postfix) with ESMTP id 977AAE01BC; Mon, 28 Jun 2021 06:34:35 -0700 (PDT) Received: from comms.puri.sm ([127.0.0.1]) by localhost (comms.puri.sm [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qDthHyxKZd8L; Mon, 28 Jun 2021 06:34:34 -0700 (PDT) From: Martin Kepplinger To: martin.kepplinger@puri.sm Cc: bvanassche@acm.org, jejb@linux.ibm.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-scsi@vger.kernel.org, martin.petersen@oracle.com, stern@rowland.harvard.edu Subject: [PATCH v4 2/3] scsi: sd: send REQUEST SENSE for BLIST_MEDIA_CHANGE devices in runtime_resume() Date: Mon, 28 Jun 2021 15:34:11 +0200 Message-Id: <20210628133412.1172068-3-martin.kepplinger@puri.sm> In-Reply-To: <20210628133412.1172068-1-martin.kepplinger@puri.sm> References: <20210628133412.1172068-1-martin.kepplinger@puri.sm> Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org For SD cardreader devices that have the BLIST_MEDIA_CHANGE flag set, a MEDIA CHANGE unit attention is received after resuming from runtime suspend. Send REQUEST SENSE to avoid that. The "downside" is that for these devices we now rely on users not to really change the medium (SD card) *during* a runtime suspend/resume cycle, i.e. when not unmounting. To enable runtime PM for an SD cardreader (device number 0:0:0:0), do: echo 0 > /sys/module/block/parameters/events_dfl_poll_msecs echo 1000 > /sys/bus/scsi/devices/0:0:0:0/power/autosuspend_delay_ms echo auto > /sys/bus/scsi/devices/0:0:0:0/power/control Signed-off-by: Martin Kepplinger --- drivers/scsi/sd.c | 37 ++++++++++++++++++++++++++++++++++++- 1 file changed, 36 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 6d2d63629a90..0acc732f1933 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -63,6 +63,7 @@ #include #include #include +#include #include #include #include @@ -114,6 +115,7 @@ static void sd_shutdown(struct device *); static int sd_suspend_system(struct device *); static int sd_suspend_runtime(struct device *); static int sd_resume(struct device *); +static int sd_resume_runtime(struct device *); static void sd_rescan(struct device *); static blk_status_t sd_init_command(struct scsi_cmnd *SCpnt); static void sd_uninit_command(struct scsi_cmnd *SCpnt); @@ -608,7 +610,7 @@ static const struct dev_pm_ops sd_pm_ops = { .poweroff = sd_suspend_system, .restore = sd_resume, .runtime_suspend = sd_suspend_runtime, - .runtime_resume = sd_resume, + .runtime_resume = sd_resume_runtime, }; static struct scsi_driver sd_template = { @@ -3720,6 +3722,39 @@ static int sd_resume(struct device *dev) return ret; } +static int sd_resume_runtime(struct device *dev) +{ + struct scsi_disk *sdkp = dev_get_drvdata(dev); + struct scsi_device *sdp; + int timeout, retries, res; + struct scsi_sense_hdr my_sshdr; + + if (!sdkp) /* E.g.: runtime resume at the start of sd_probe() */ + return 0; + + sdp = sdkp->device; + timeout = sdp->request_queue->rq_timeout * SD_FLUSH_TIMEOUT_MULTIPLIER; + + if (sdp->sdev_bflags & BLIST_MEDIA_CHANGE) { + for (retries = 3; retries > 0; --retries) { + unsigned char cmd[10] = { 0 }; + + cmd[0] = REQUEST_SENSE; + /* + * Leave the rest of the command zero to indicate + * flush everything. + */ + res = scsi_execute(sdp, cmd, DMA_NONE, NULL, 0, NULL, + &my_sshdr, timeout, + sdkp->max_retries, 0, RQF_PM, NULL); + if (res == 0) + break; + } + } + + return sd_resume(dev); +} + /** * init_sd - entry point for this driver (both when built in or when * a module). From patchwork Mon Jun 28 13:34:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kepplinger X-Patchwork-Id: 468538 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED 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 3BA4EC49EA3 for ; Mon, 28 Jun 2021 13:36:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 25C5F61C6C for ; Mon, 28 Jun 2021 13:36:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232562AbhF1Ni1 (ORCPT ); Mon, 28 Jun 2021 09:38:27 -0400 Received: from comms.puri.sm ([159.203.221.185]:47422 "EHLO comms.puri.sm" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231964AbhF1Nhd (ORCPT ); Mon, 28 Jun 2021 09:37:33 -0400 Received: from localhost (localhost [127.0.0.1]) by comms.puri.sm (Postfix) with ESMTP id E8513E016C; Mon, 28 Jun 2021 06:34:37 -0700 (PDT) Received: from comms.puri.sm ([127.0.0.1]) by localhost (comms.puri.sm [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6FSE_RpLYeAJ; Mon, 28 Jun 2021 06:34:37 -0700 (PDT) From: Martin Kepplinger To: martin.kepplinger@puri.sm Cc: bvanassche@acm.org, jejb@linux.ibm.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-scsi@vger.kernel.org, martin.petersen@oracle.com, stern@rowland.harvard.edu Subject: [PATCH v4 3/3] scsi: devinfo: add BLIST_MEDIA_CHANGE for Ultra HS-SD/MMC usb cardreaders Date: Mon, 28 Jun 2021 15:34:12 +0200 Message-Id: <20210628133412.1172068-4-martin.kepplinger@puri.sm> In-Reply-To: <20210628133412.1172068-1-martin.kepplinger@puri.sm> References: <20210628133412.1172068-1-martin.kepplinger@puri.sm> Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org These cardreader device issues a MEDIA CHANGE unit attention not only when actually a medium changed but also simply when resuming from suspend. Setting the BLIST_MEDIA_CHANGE flag enables using runtime pm for SD cardreaders. Signed-off-by: Martin Kepplinger Reviewed-by: Bart Van Assche --- drivers/scsi/scsi_devinfo.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c index d33355ab6e14..8ac0a11ac541 100644 --- a/drivers/scsi/scsi_devinfo.c +++ b/drivers/scsi/scsi_devinfo.c @@ -171,6 +171,7 @@ static struct { {"FUJITSU", "ETERNUS_DXM", "*", BLIST_RETRY_ASC_C1}, {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36}, {"Generic", "USB Storage-SMC", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36}, /* FW: 0180 and 0207 */ + {"Generic", "Ultra HS-SD/MMC", "2.09", BLIST_MEDIA_CHANGE | BLIST_INQUIRY_36}, {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2},