From patchwork Sat Mar 2 20:16:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Igor Pylypiv X-Patchwork-Id: 777699 Received: from mail-yb1-f201.google.com (mail-yb1-f201.google.com [209.85.219.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 84D4F3FB32 for ; Sat, 2 Mar 2024 20:16:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709410613; cv=none; b=UyvcbNhAcsy7IEOtVFxAV5dfw1t/cu05y9lR4x0uHiKSieKLlFxUiYVuIpd7IVTSEGdZXFAEQGpTd7Kv+IYppgzeqBlscZGOHqyqhkysCMby0qhXuTeoc4iJ4mCgeJ4U5THE9KNQSG1/p2q0KmaeStckLJwDHg0ZG7+uuPKIE4k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709410613; c=relaxed/simple; bh=Dr1gHME6UhZzljl3CDtFvx0fMB3rr1EwYhk4f6Q7U3s=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=RVRH0VimJs7/1MXvxawGo+y9IhvEoM+qS5f3w2UYr6jA2EQWEfUlRLVo4I0XMfL+x7Cnat9tfet42CM6+wY6JGsgm5xvUX7g9VttXMFsWeI+8UpwqHc8FFdQxpIkFZbD6GQOmjEZrHvzhptPhKjfUwNC2gc0X+dvPa/acowsW9w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--ipylypiv.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=SEsPWD7I; arc=none smtp.client-ip=209.85.219.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--ipylypiv.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="SEsPWD7I" Received: by mail-yb1-f201.google.com with SMTP id 3f1490d57ef6-dc6b26ce0bbso6963732276.1 for ; Sat, 02 Mar 2024 12:16:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1709410610; x=1710015410; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=z4qRVCwUT6U2lE1it/3KAP9Dql1inh3yxdaUzH18pmU=; b=SEsPWD7IVOO+3ST4gdLVG0GO4xL+t4KuVrEYFMnDeb2SLrvfxK0BFOBayljFLQftXJ 70zkYmungWf0fLlyyXBnht+IErLAMGFb//cBhPgxmrRF7SuBtwYI8QU8RAgKaaKJ86t3 DlIHaMx0jDhCSDE38N6qB72DZUBHXVQeKwtIZwz8AIJeKLo9zLmM8A6ncIbRXb4gNJor nWAFtqGyfnPuTNsHJXdbSScbe/LR0ryGM1EjIVmU8SMAlClgpPIX4LI1KXn7WH9r4+vk Vo59BGXw7NucrJukJMYQQ/nyF8cg55RWtlP1pcAfgCfqqcHro5I9ByOZ9axjgw2bbYO3 UcuQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1709410610; x=1710015410; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=z4qRVCwUT6U2lE1it/3KAP9Dql1inh3yxdaUzH18pmU=; b=gFjGTphSjX69Bor6NXbvQZs2rsm9B0h5ziWJ2E4V3JdArNOKgBfF0e/Lwc7ZAKPbOq NKeO4m/WzPd9ZBp+Xbk328vLO7rzk93JGyyYkRIgLcpir3rPBr+e9KUgGdJGyw0FZHDo aPl6/OobeY0Mi9cbb7WbKWkap6wQ1GBrXNzjSXFxLbza5nuvW5Qv3VB7B/zB02ea/H0f TboJlcBZ80dYxRqD/NXZAwxVVjPs93xL1Sw4kz4LU2Wb/i4hwZYL+zS+g/7j6De5xNvu PWbo4SaIb1lrcwjd3gMEzW8MDsRxh2D/Ea8XqU1ma3DhGZ5xk/muSlzD2p/YKs7PY6oV fWlQ== X-Forwarded-Encrypted: i=1; AJvYcCUQVSObHGmLH5dGLusviWktGwxqT5lgY1SgmA+Xr3jAlv06ntyb34bjnjLrqHu0zaSc3DVIVUWzrTLXeJDPUpcMEMJmV2XVDxCiOw== X-Gm-Message-State: AOJu0Yz6vmVK0B4m0XQnld/OXEFnV1P86/ZpTtmr4DfxljjzRoJ5+O1d pYd2YAXJNcQqI0qUmFYIq7wvLCR/PGCIid58fq1I1Ayo+S6QCMsr4JxEM34COPXlbYojEXhGhHs DixygcXUT6A== X-Google-Smtp-Source: AGHT+IGOW7SBJh4WP3KpmE2TKXdeEoDMr8V7/Lvbu1fuVnc60rYhGJoHBqHZ0S79O1x3nEtKwjjpI25HI3zqFA== X-Received: from ipylypiv.svl.corp.google.com ([2620:15c:2c5:13:41a7:9019:9a7:b404]) (user=ipylypiv job=sendgmr) by 2002:a05:6902:2492:b0:dcb:b9d7:2760 with SMTP id ds18-20020a056902249200b00dcbb9d72760mr1372955ybb.13.1709410610740; Sat, 02 Mar 2024 12:16:50 -0800 (PST) Date: Sat, 2 Mar 2024 12:16:30 -0800 In-Reply-To: <20240302201636.1228331-1-ipylypiv@google.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240302201636.1228331-1-ipylypiv@google.com> X-Mailer: git-send-email 2.44.0.278.ge034bb2e1d-goog Message-ID: <20240302201636.1228331-2-ipylypiv@google.com> Subject: [PATCH v3 1/7] ata: libata-sata: Factor out NCQ Priority configuration helpers From: Igor Pylypiv To: Damien Le Moal , Niklas Cassel , John Garry , Jason Yan , "James E.J. Bottomley" , "Martin K. Petersen" , Jack Wang , Hannes Reinecke , Xiang Chen , Artur Paszkiewicz , Bart Van Assche Cc: TJ Adams , linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Igor Pylypiv Export libata NCQ Priority configuration helpers to be reused for libsas managed SATA devices. Signed-off-by: Igor Pylypiv --- drivers/ata/libata-sata.c | 139 +++++++++++++++++++++++++++----------- include/linux/libata.h | 4 ++ 2 files changed, 103 insertions(+), 40 deletions(-) diff --git a/drivers/ata/libata-sata.c b/drivers/ata/libata-sata.c index 0fb1934875f2..a8d5e36d5211 100644 --- a/drivers/ata/libata-sata.c +++ b/drivers/ata/libata-sata.c @@ -848,29 +848,73 @@ DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR, ata_scsi_lpm_show, ata_scsi_lpm_store); EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy); +/** + * ata_ncq_prio_supported - Check if device supports NCQ Priority + * @ap: ATA port of the target device + * @sdev: SCSI device + * + * Helper to check if device supports NCQ Priority feature, + * usable with both libsas and libata. + */ +int ata_ncq_prio_supported(struct ata_port *ap, struct scsi_device *sdev) +{ + struct ata_device *dev; + unsigned long flags; + int rc; + + spin_lock_irqsave(ap->lock, flags); + dev = ata_scsi_find_dev(ap, sdev); + if (!dev) + rc = -ENODEV; + else + rc = !!(dev->flags & ATA_DFLAG_NCQ_PRIO); + spin_unlock_irqrestore(ap->lock, flags); + return rc; +} +EXPORT_SYMBOL_GPL(ata_ncq_prio_supported); + static ssize_t ata_ncq_prio_supported_show(struct device *device, struct device_attribute *attr, char *buf) { struct scsi_device *sdev = to_scsi_device(device); struct ata_port *ap = ata_shost_to_port(sdev->host); + int rc; + + rc = ata_ncq_prio_supported(ap, sdev); + if (rc < 0) + return rc; + + return sysfs_emit(buf, "%d\n", rc); +} + +DEVICE_ATTR(ncq_prio_supported, S_IRUGO, ata_ncq_prio_supported_show, NULL); +EXPORT_SYMBOL_GPL(dev_attr_ncq_prio_supported); + +/** + * ata_ncq_prio_enabled - Check if NCQ Priority is enabled + * @ap: ATA port of the target device + * @sdev: SCSI device + * + * Helper to check if NCQ Priority feature is enabled, + * usable with both libsas and libata. + */ +int ata_ncq_prio_enabled(struct ata_port *ap, struct scsi_device *sdev) +{ struct ata_device *dev; - bool ncq_prio_supported; - int rc = 0; + unsigned long flags; + int rc; - spin_lock_irq(ap->lock); + spin_lock_irqsave(ap->lock, flags); dev = ata_scsi_find_dev(ap, sdev); if (!dev) rc = -ENODEV; else - ncq_prio_supported = dev->flags & ATA_DFLAG_NCQ_PRIO; - spin_unlock_irq(ap->lock); - - return rc ? rc : sysfs_emit(buf, "%u\n", ncq_prio_supported); + rc = !!(dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLED); + spin_unlock_irqrestore(ap->lock, flags); + return rc; } - -DEVICE_ATTR(ncq_prio_supported, S_IRUGO, ata_ncq_prio_supported_show, NULL); -EXPORT_SYMBOL_GPL(dev_attr_ncq_prio_supported); +EXPORT_SYMBOL_GPL(ata_ncq_prio_enabled); static ssize_t ata_ncq_prio_enable_show(struct device *device, struct device_attribute *attr, @@ -878,50 +922,45 @@ static ssize_t ata_ncq_prio_enable_show(struct device *device, { struct scsi_device *sdev = to_scsi_device(device); struct ata_port *ap = ata_shost_to_port(sdev->host); - struct ata_device *dev; - bool ncq_prio_enable; - int rc = 0; + int rc; - spin_lock_irq(ap->lock); - dev = ata_scsi_find_dev(ap, sdev); - if (!dev) - rc = -ENODEV; - else - ncq_prio_enable = dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLED; - spin_unlock_irq(ap->lock); + rc = ata_ncq_prio_enabled(ap, sdev); + if (rc < 0) + return rc; - return rc ? rc : sysfs_emit(buf, "%u\n", ncq_prio_enable); + return sysfs_emit(buf, "%d\n", rc); } -static ssize_t ata_ncq_prio_enable_store(struct device *device, - struct device_attribute *attr, - const char *buf, size_t len) +/** + * ata_ncq_prio_enable - Enable/disable NCQ Priority + * @ap: ATA port of the target device + * @sdev: SCSI device + * @enable: true - enable NCQ Priority, false - disable NCQ Priority + * + * Helper to enable/disable NCQ Priority feature, usable with both + * libsas and libata. + */ +int ata_ncq_prio_enable(struct ata_port *ap, struct scsi_device *sdev, + bool enable) { - struct scsi_device *sdev = to_scsi_device(device); - struct ata_port *ap; struct ata_device *dev; - long int input; + unsigned long flags; int rc = 0; - rc = kstrtol(buf, 10, &input); - if (rc) - return rc; - if ((input < 0) || (input > 1)) - return -EINVAL; + spin_lock_irqsave(ap->lock, flags); - ap = ata_shost_to_port(sdev->host); dev = ata_scsi_find_dev(ap, sdev); - if (unlikely(!dev)) - return -ENODEV; - - spin_lock_irq(ap->lock); + if (unlikely(!dev)) { + rc = -ENODEV; + goto unlock; + } if (!(dev->flags & ATA_DFLAG_NCQ_PRIO)) { rc = -EINVAL; goto unlock; } - if (input) { + if (enable) { if (dev->flags & ATA_DFLAG_CDL_ENABLED) { ata_dev_err(dev, "CDL must be disabled to enable NCQ priority\n"); @@ -934,9 +973,29 @@ static ssize_t ata_ncq_prio_enable_store(struct device *device, } unlock: - spin_unlock_irq(ap->lock); + spin_unlock_irqrestore(ap->lock, flags); + return rc; +} +EXPORT_SYMBOL_GPL(ata_ncq_prio_enable); + +static ssize_t ata_ncq_prio_enable_store(struct device *device, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct scsi_device *sdev = to_scsi_device(device); + struct ata_port *ap = ata_shost_to_port(sdev->host); + bool enable; + int rc; + + rc = kstrtobool(buf, &enable); + if (rc) + return rc; + + rc = ata_ncq_prio_enable(ap, sdev, enable); + if (rc) + return rc; - return rc ? rc : len; + return len; } DEVICE_ATTR(ncq_prio_enable, S_IRUGO | S_IWUSR, diff --git a/include/linux/libata.h b/include/linux/libata.h index 26d68115afb8..f3ff2bf3ec6b 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1157,6 +1157,10 @@ extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth); extern int ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, int queue_depth); +extern int ata_ncq_prio_supported(struct ata_port *ap, struct scsi_device *sdev); +extern int ata_ncq_prio_enabled(struct ata_port *ap, struct scsi_device *sdev); +extern int ata_ncq_prio_enable(struct ata_port *ap, struct scsi_device *sdev, + bool enable); extern struct ata_device *ata_dev_pair(struct ata_device *adev); extern int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); extern void ata_scsi_port_error_handler(struct Scsi_Host *host, struct ata_port *ap);