From patchwork Wed Sep 20 19:14:30 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 724777 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8218C04FFD for ; Wed, 20 Sep 2023 19:15:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230126AbjITTPc (ORCPT ); Wed, 20 Sep 2023 15:15:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38598 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230073AbjITTP1 (ORCPT ); Wed, 20 Sep 2023 15:15:27 -0400 Received: from mail-pl1-f174.google.com (mail-pl1-f174.google.com [209.85.214.174]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 267FC181; Wed, 20 Sep 2023 12:15:00 -0700 (PDT) Received: by mail-pl1-f174.google.com with SMTP id d9443c01a7336-1c39f2b4f5aso1141025ad.0; Wed, 20 Sep 2023 12:15:00 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695237299; x=1695842099; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=JuGgi2781RSNqqTVCVYBMAQdohOPiamBC3di8Bb3XDg=; b=pi8fzxi2KaFarJiDYbgcWTQoQMoAJMqAAURxQAwgWFZ0+a3YB4GR47g97bxzL6/JMw 040E+rsPgoOBKdaXQyzsx0iIl8zd/QN/xvBl1hm1S6+hVspa8zrCcZaMO7m3cKJzmLRR piyhSsISxCj8S+qGf0NMRp/rX97vKjG8n3z2iZf23clmgBeb36xu2qxqCb89ROxcljT3 mL7/0fNfucTZJ7xO9xDSFaTbJiwD9bRAOy5L94WIRFVSlJRgkDJMzJ+tuDTzO9AqAJYx DG3iynuPGQER4eGMfDgtCyOxoGXb2mLnZB1dcJigegCu6UbnrmRvrI1T8m/U8DaEl2Si PvTQ== X-Gm-Message-State: AOJu0Yw3tyiN++QoQRawnEkm0cfMrkMQq9t8HJnSYFpJdkYukeYBbMM5 tu6ZKYR/RLoDIXTIrKy+cE00KTKP6F4= X-Google-Smtp-Source: AGHT+IHs9xjW5itAbr9fLJ7LZIYb//6Rh9Aw1QFlg6+CKXwIjGdaTq2oTelvDFbxVwPDLT1+YayJtg== X-Received: by 2002:a17:90b:1e0e:b0:274:616e:3fc4 with SMTP id pg14-20020a17090b1e0e00b00274616e3fc4mr3377409pjb.34.1695237298728; Wed, 20 Sep 2023 12:14:58 -0700 (PDT) Received: from bvanassche-linux.mtv.corp.google.com ([2620:15c:211:201:b0c6:e5b6:49ef:e0bd]) by smtp.gmail.com with ESMTPSA id a13-20020a17090a8c0d00b002633fa95ac2sm1656318pjo.13.2023.09.20.12.14.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Sep 2023 12:14:58 -0700 (PDT) From: Bart Van Assche To: Jens Axboe Cc: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org, "Martin K . Petersen" , Christoph Hellwig , Bart Van Assche , "James E.J. Bottomley" Subject: [PATCH 05/13] scsi: core: Query the Block Limits Extension VPD page Date: Wed, 20 Sep 2023 12:14:30 -0700 Message-ID: <20230920191442.3701673-6-bvanassche@acm.org> X-Mailer: git-send-email 2.42.0.459.ge4e396fd5e-goog In-Reply-To: <20230920191442.3701673-1-bvanassche@acm.org> References: <20230920191442.3701673-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Parse the Reduced Stream Control Supported (RSCS) bit from the block limits extension VPD page. The RSCS bit is defined in T10 document "SBC-5 Constrained Streams with Data Lifetimes" (https://www.t10.org/cgi-bin/ac.pl?t=d&f=23-024r3.pdf). Cc: Martin K. Petersen Signed-off-by: Bart Van Assche Reviewed-by: Avri Altman Reviewed-by: Daejun Park --- drivers/scsi/scsi.c | 2 ++ drivers/scsi/scsi_sysfs.c | 10 ++++++++++ drivers/scsi/sd.c | 13 +++++++++++++ drivers/scsi/sd.h | 1 + include/scsi/scsi_device.h | 1 + 5 files changed, 27 insertions(+) diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index d0911bc28663..5ad291770806 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -499,6 +499,8 @@ void scsi_attach_vpd(struct scsi_device *sdev) scsi_update_vpd_page(sdev, 0xb1, &sdev->vpd_pgb1); if (vpd_buf->data[i] == 0xb2) scsi_update_vpd_page(sdev, 0xb2, &sdev->vpd_pgb2); + if (vpd_buf->data[i] == 0xb7) + scsi_update_vpd_page(sdev, 0xb7, &sdev->vpd_pgb7); } kfree(vpd_buf); } diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index 24f6eefb6803..93652a786a46 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -449,6 +449,7 @@ static void scsi_device_dev_release(struct device *dev) struct scsi_vpd *vpd_pg80 = NULL, *vpd_pg83 = NULL; struct scsi_vpd *vpd_pg0 = NULL, *vpd_pg89 = NULL; struct scsi_vpd *vpd_pgb0 = NULL, *vpd_pgb1 = NULL, *vpd_pgb2 = NULL; + struct scsi_vpd *vpd_pgb7 = NULL; unsigned long flags; might_sleep(); @@ -494,6 +495,8 @@ static void scsi_device_dev_release(struct device *dev) lockdep_is_held(&sdev->inquiry_mutex)); vpd_pgb2 = rcu_replace_pointer(sdev->vpd_pgb2, vpd_pgb2, lockdep_is_held(&sdev->inquiry_mutex)); + vpd_pgb7 = rcu_replace_pointer(sdev->vpd_pgb7, vpd_pgb7, + lockdep_is_held(&sdev->inquiry_mutex)); mutex_unlock(&sdev->inquiry_mutex); if (vpd_pg0) @@ -510,6 +513,8 @@ static void scsi_device_dev_release(struct device *dev) kfree_rcu(vpd_pgb1, rcu); if (vpd_pgb2) kfree_rcu(vpd_pgb2, rcu); + if (vpd_pgb7) + kfree_rcu(vpd_pgb7, rcu); kfree(sdev->inquiry); kfree(sdev); @@ -921,6 +926,7 @@ sdev_vpd_pg_attr(pg89); sdev_vpd_pg_attr(pgb0); sdev_vpd_pg_attr(pgb1); sdev_vpd_pg_attr(pgb2); +sdev_vpd_pg_attr(pgb7); sdev_vpd_pg_attr(pg0); static ssize_t show_inquiry(struct file *filep, struct kobject *kobj, @@ -1295,6 +1301,9 @@ static umode_t scsi_sdev_bin_attr_is_visible(struct kobject *kobj, if (attr == &dev_attr_vpd_pgb2 && !sdev->vpd_pgb2) return 0; + if (attr == &dev_attr_vpd_pgb7 && !sdev->vpd_pgb7) + return 0; + return S_IRUGO; } @@ -1347,6 +1356,7 @@ static struct bin_attribute *scsi_sdev_bin_attrs[] = { &dev_attr_vpd_pgb0, &dev_attr_vpd_pgb1, &dev_attr_vpd_pgb2, + &dev_attr_vpd_pgb7, &dev_attr_inquiry, NULL }; diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index c92a317ba547..879edbc1a065 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -3019,6 +3019,18 @@ static void sd_read_block_limits(struct scsi_disk *sdkp) rcu_read_unlock(); } +/* Parse the Block Limits Extension VPD page (0xb7) */ +static void sd_read_block_limits_ext(struct scsi_disk *sdkp) +{ + struct scsi_vpd *vpd; + + rcu_read_lock(); + vpd = rcu_dereference(sdkp->device->vpd_pgb7); + if (vpd && vpd->len >= 2) + sdkp->rscs = vpd->data[5] & 1; + rcu_read_unlock(); +} + /** * sd_read_block_characteristics - Query block dev. characteristics * @sdkp: disk to query @@ -3373,6 +3385,7 @@ static int sd_revalidate_disk(struct gendisk *disk) if (scsi_device_supports_vpd(sdp)) { sd_read_block_provisioning(sdkp); sd_read_block_limits(sdkp); + sd_read_block_limits_ext(sdkp); sd_read_block_characteristics(sdkp); sd_zbc_read_zones(sdkp, buffer); sd_read_cpr(sdkp); diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h index 5eea762f84d1..84685168b6e0 100644 --- a/drivers/scsi/sd.h +++ b/drivers/scsi/sd.h @@ -150,6 +150,7 @@ struct scsi_disk { unsigned urswrz : 1; unsigned security : 1; unsigned ignore_medium_access_errors : 1; + bool rscs : 1; /* reduced stream control support */ }; #define to_scsi_disk(obj) container_of(obj, struct scsi_disk, disk_dev) diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index b9230b6add04..2dd96ae101e1 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -153,6 +153,7 @@ struct scsi_device { struct scsi_vpd __rcu *vpd_pgb0; struct scsi_vpd __rcu *vpd_pgb1; struct scsi_vpd __rcu *vpd_pgb2; + struct scsi_vpd __rcu *vpd_pgb7; struct scsi_target *sdev_target;