ata: start separating SATA specific code from libata-scsi.c
Start separating SATA specific code from libata-scsi.c: * un-static ata_scsi_find_dev() * move following code to libata-sata.c: - SATA only sysfs device attributes handling - __ata_change_queue_depth() - ata_scsi_change_queue_depth() * cover with CONFIG_SATA_HOST ifdef SATA only sysfs device attributes handling code and ATA_SHT_NCQ() macro in <linux/libata.h> Code size savings on m68k arch using (modified) atari_defconfig: text data bss dec hex filename before: 20702 105 576 21383 5387 drivers/ata/libata-scsi.o after: 19137 23 576 19736 4d18 drivers/ata/libata-scsi.o Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Bartlomiej Zolnierkiewicz
Jens Axboe
Родитель
2b384ede71
Коммит
ec811a94c5
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@ -8,6 +8,7 @@
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <scsi/scsi_device.h>
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#include <linux/libata.h>
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#include "libata.h"
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@ -764,3 +765,300 @@ bool sata_lpm_ignore_phy_events(struct ata_link *link)
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return false;
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}
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EXPORT_SYMBOL_GPL(sata_lpm_ignore_phy_events);
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static const char *ata_lpm_policy_names[] = {
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[ATA_LPM_UNKNOWN] = "max_performance",
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[ATA_LPM_MAX_POWER] = "max_performance",
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[ATA_LPM_MED_POWER] = "medium_power",
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[ATA_LPM_MED_POWER_WITH_DIPM] = "med_power_with_dipm",
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[ATA_LPM_MIN_POWER_WITH_PARTIAL] = "min_power_with_partial",
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[ATA_LPM_MIN_POWER] = "min_power",
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};
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static ssize_t ata_scsi_lpm_store(struct device *device,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct Scsi_Host *shost = class_to_shost(device);
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struct ata_port *ap = ata_shost_to_port(shost);
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struct ata_link *link;
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struct ata_device *dev;
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enum ata_lpm_policy policy;
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unsigned long flags;
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/* UNKNOWN is internal state, iterate from MAX_POWER */
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for (policy = ATA_LPM_MAX_POWER;
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policy < ARRAY_SIZE(ata_lpm_policy_names); policy++) {
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const char *name = ata_lpm_policy_names[policy];
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if (strncmp(name, buf, strlen(name)) == 0)
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break;
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}
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if (policy == ARRAY_SIZE(ata_lpm_policy_names))
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return -EINVAL;
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spin_lock_irqsave(ap->lock, flags);
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ata_for_each_link(link, ap, EDGE) {
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ata_for_each_dev(dev, &ap->link, ENABLED) {
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if (dev->horkage & ATA_HORKAGE_NOLPM) {
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count = -EOPNOTSUPP;
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goto out_unlock;
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}
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}
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}
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ap->target_lpm_policy = policy;
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ata_port_schedule_eh(ap);
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out_unlock:
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spin_unlock_irqrestore(ap->lock, flags);
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return count;
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}
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static ssize_t ata_scsi_lpm_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct Scsi_Host *shost = class_to_shost(dev);
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struct ata_port *ap = ata_shost_to_port(shost);
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if (ap->target_lpm_policy >= ARRAY_SIZE(ata_lpm_policy_names))
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return -EINVAL;
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return snprintf(buf, PAGE_SIZE, "%s\n",
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ata_lpm_policy_names[ap->target_lpm_policy]);
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}
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DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR,
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ata_scsi_lpm_show, ata_scsi_lpm_store);
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EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy);
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static ssize_t ata_ncq_prio_enable_show(struct device *device,
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struct device_attribute *attr,
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char *buf)
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{
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struct scsi_device *sdev = to_scsi_device(device);
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struct ata_port *ap;
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struct ata_device *dev;
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bool ncq_prio_enable;
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int rc = 0;
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ap = ata_shost_to_port(sdev->host);
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spin_lock_irq(ap->lock);
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dev = ata_scsi_find_dev(ap, sdev);
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if (!dev) {
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rc = -ENODEV;
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goto unlock;
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}
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ncq_prio_enable = dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLE;
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unlock:
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spin_unlock_irq(ap->lock);
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return rc ? rc : snprintf(buf, 20, "%u\n", ncq_prio_enable);
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}
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static ssize_t ata_ncq_prio_enable_store(struct device *device,
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struct device_attribute *attr,
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const char *buf, size_t len)
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{
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struct scsi_device *sdev = to_scsi_device(device);
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struct ata_port *ap;
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struct ata_device *dev;
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long int input;
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int rc;
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rc = kstrtol(buf, 10, &input);
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if (rc)
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return rc;
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if ((input < 0) || (input > 1))
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return -EINVAL;
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ap = ata_shost_to_port(sdev->host);
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dev = ata_scsi_find_dev(ap, sdev);
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if (unlikely(!dev))
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return -ENODEV;
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spin_lock_irq(ap->lock);
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if (input)
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dev->flags |= ATA_DFLAG_NCQ_PRIO_ENABLE;
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else
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dev->flags &= ~ATA_DFLAG_NCQ_PRIO_ENABLE;
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dev->link->eh_info.action |= ATA_EH_REVALIDATE;
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dev->link->eh_info.flags |= ATA_EHI_QUIET;
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ata_port_schedule_eh(ap);
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spin_unlock_irq(ap->lock);
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ata_port_wait_eh(ap);
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if (input) {
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spin_lock_irq(ap->lock);
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if (!(dev->flags & ATA_DFLAG_NCQ_PRIO)) {
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dev->flags &= ~ATA_DFLAG_NCQ_PRIO_ENABLE;
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rc = -EIO;
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}
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spin_unlock_irq(ap->lock);
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}
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return rc ? rc : len;
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}
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DEVICE_ATTR(ncq_prio_enable, S_IRUGO | S_IWUSR,
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ata_ncq_prio_enable_show, ata_ncq_prio_enable_store);
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EXPORT_SYMBOL_GPL(dev_attr_ncq_prio_enable);
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struct device_attribute *ata_ncq_sdev_attrs[] = {
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&dev_attr_unload_heads,
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&dev_attr_ncq_prio_enable,
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NULL
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};
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EXPORT_SYMBOL_GPL(ata_ncq_sdev_attrs);
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static ssize_t
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ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct Scsi_Host *shost = class_to_shost(dev);
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struct ata_port *ap = ata_shost_to_port(shost);
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if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM))
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return ap->ops->em_store(ap, buf, count);
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return -EINVAL;
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}
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static ssize_t
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ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct Scsi_Host *shost = class_to_shost(dev);
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struct ata_port *ap = ata_shost_to_port(shost);
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if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM))
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return ap->ops->em_show(ap, buf);
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return -EINVAL;
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}
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DEVICE_ATTR(em_message, S_IRUGO | S_IWUSR,
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ata_scsi_em_message_show, ata_scsi_em_message_store);
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EXPORT_SYMBOL_GPL(dev_attr_em_message);
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static ssize_t
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ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct Scsi_Host *shost = class_to_shost(dev);
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struct ata_port *ap = ata_shost_to_port(shost);
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return snprintf(buf, 23, "%d\n", ap->em_message_type);
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}
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DEVICE_ATTR(em_message_type, S_IRUGO,
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ata_scsi_em_message_type_show, NULL);
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EXPORT_SYMBOL_GPL(dev_attr_em_message_type);
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static ssize_t
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ata_scsi_activity_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct scsi_device *sdev = to_scsi_device(dev);
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struct ata_port *ap = ata_shost_to_port(sdev->host);
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struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
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if (atadev && ap->ops->sw_activity_show &&
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(ap->flags & ATA_FLAG_SW_ACTIVITY))
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return ap->ops->sw_activity_show(atadev, buf);
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return -EINVAL;
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}
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static ssize_t
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ata_scsi_activity_store(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct scsi_device *sdev = to_scsi_device(dev);
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struct ata_port *ap = ata_shost_to_port(sdev->host);
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struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
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enum sw_activity val;
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int rc;
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if (atadev && ap->ops->sw_activity_store &&
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(ap->flags & ATA_FLAG_SW_ACTIVITY)) {
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val = simple_strtoul(buf, NULL, 0);
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switch (val) {
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case OFF: case BLINK_ON: case BLINK_OFF:
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rc = ap->ops->sw_activity_store(atadev, val);
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if (!rc)
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return count;
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else
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return rc;
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}
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}
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return -EINVAL;
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}
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DEVICE_ATTR(sw_activity, S_IWUSR | S_IRUGO, ata_scsi_activity_show,
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ata_scsi_activity_store);
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EXPORT_SYMBOL_GPL(dev_attr_sw_activity);
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/**
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* __ata_change_queue_depth - helper for ata_scsi_change_queue_depth
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* @ap: ATA port to which the device change the queue depth
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* @sdev: SCSI device to configure queue depth for
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* @queue_depth: new queue depth
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*
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* libsas and libata have different approaches for associating a sdev to
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* its ata_port.
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*
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*/
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int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
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int queue_depth)
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{
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struct ata_device *dev;
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unsigned long flags;
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if (queue_depth < 1 || queue_depth == sdev->queue_depth)
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return sdev->queue_depth;
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dev = ata_scsi_find_dev(ap, sdev);
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if (!dev || !ata_dev_enabled(dev))
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return sdev->queue_depth;
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/* NCQ enabled? */
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spin_lock_irqsave(ap->lock, flags);
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dev->flags &= ~ATA_DFLAG_NCQ_OFF;
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if (queue_depth == 1 || !ata_ncq_enabled(dev)) {
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dev->flags |= ATA_DFLAG_NCQ_OFF;
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queue_depth = 1;
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}
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spin_unlock_irqrestore(ap->lock, flags);
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/* limit and apply queue depth */
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queue_depth = min(queue_depth, sdev->host->can_queue);
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queue_depth = min(queue_depth, ata_id_queue_depth(dev->id));
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queue_depth = min(queue_depth, ATA_MAX_QUEUE);
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if (sdev->queue_depth == queue_depth)
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return -EINVAL;
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return scsi_change_queue_depth(sdev, queue_depth);
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}
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EXPORT_SYMBOL_GPL(__ata_change_queue_depth);
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/**
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* ata_scsi_change_queue_depth - SCSI callback for queue depth config
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* @sdev: SCSI device to configure queue depth for
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* @queue_depth: new queue depth
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*
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* This is libata standard hostt->change_queue_depth callback.
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* SCSI will call into this callback when user tries to set queue
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* depth via sysfs.
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*
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* LOCKING:
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* SCSI layer (we don't care)
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*
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* RETURNS:
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* Newly configured queue depth.
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*/
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int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth)
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{
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struct ata_port *ap = ata_shost_to_port(sdev->host);
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return __ata_change_queue_depth(ap, sdev, queue_depth);
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}
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EXPORT_SYMBOL_GPL(ata_scsi_change_queue_depth);
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@ -46,8 +46,6 @@ typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc);
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static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap,
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const struct scsi_device *scsidev);
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static struct ata_device *ata_scsi_find_dev(struct ata_port *ap,
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const struct scsi_device *scsidev);
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#define RW_RECOVERY_MPAGE 0x1
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#define RW_RECOVERY_MPAGE_LEN 12
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@ -87,71 +85,6 @@ static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = {
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0, 30 /* extended self test time, see 05-359r1 */
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};
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static const char *ata_lpm_policy_names[] = {
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[ATA_LPM_UNKNOWN] = "max_performance",
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[ATA_LPM_MAX_POWER] = "max_performance",
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[ATA_LPM_MED_POWER] = "medium_power",
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[ATA_LPM_MED_POWER_WITH_DIPM] = "med_power_with_dipm",
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[ATA_LPM_MIN_POWER_WITH_PARTIAL] = "min_power_with_partial",
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[ATA_LPM_MIN_POWER] = "min_power",
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};
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static ssize_t ata_scsi_lpm_store(struct device *device,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct Scsi_Host *shost = class_to_shost(device);
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struct ata_port *ap = ata_shost_to_port(shost);
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struct ata_link *link;
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struct ata_device *dev;
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enum ata_lpm_policy policy;
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unsigned long flags;
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/* UNKNOWN is internal state, iterate from MAX_POWER */
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for (policy = ATA_LPM_MAX_POWER;
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policy < ARRAY_SIZE(ata_lpm_policy_names); policy++) {
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const char *name = ata_lpm_policy_names[policy];
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if (strncmp(name, buf, strlen(name)) == 0)
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break;
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}
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if (policy == ARRAY_SIZE(ata_lpm_policy_names))
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return -EINVAL;
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spin_lock_irqsave(ap->lock, flags);
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ata_for_each_link(link, ap, EDGE) {
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ata_for_each_dev(dev, &ap->link, ENABLED) {
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if (dev->horkage & ATA_HORKAGE_NOLPM) {
|
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count = -EOPNOTSUPP;
|
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goto out_unlock;
|
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}
|
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}
|
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}
|
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|
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ap->target_lpm_policy = policy;
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ata_port_schedule_eh(ap);
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out_unlock:
|
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spin_unlock_irqrestore(ap->lock, flags);
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return count;
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}
|
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|
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static ssize_t ata_scsi_lpm_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
|
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struct Scsi_Host *shost = class_to_shost(dev);
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struct ata_port *ap = ata_shost_to_port(shost);
|
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|
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if (ap->target_lpm_policy >= ARRAY_SIZE(ata_lpm_policy_names))
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return -EINVAL;
|
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|
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return snprintf(buf, PAGE_SIZE, "%s\n",
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ata_lpm_policy_names[ap->target_lpm_policy]);
|
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}
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DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR,
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ata_scsi_lpm_show, ata_scsi_lpm_store);
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EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy);
|
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|
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static ssize_t ata_scsi_park_show(struct device *device,
|
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struct device_attribute *attr, char *buf)
|
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{
|
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|
|
@ -255,83 +188,6 @@ DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR,
|
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ata_scsi_park_show, ata_scsi_park_store);
|
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EXPORT_SYMBOL_GPL(dev_attr_unload_heads);
|
||||
|
||||
static ssize_t ata_ncq_prio_enable_show(struct device *device,
|
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struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct scsi_device *sdev = to_scsi_device(device);
|
||||
struct ata_port *ap;
|
||||
struct ata_device *dev;
|
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bool ncq_prio_enable;
|
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int rc = 0;
|
||||
|
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ap = ata_shost_to_port(sdev->host);
|
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|
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spin_lock_irq(ap->lock);
|
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dev = ata_scsi_find_dev(ap, sdev);
|
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if (!dev) {
|
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rc = -ENODEV;
|
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goto unlock;
|
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}
|
||||
|
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ncq_prio_enable = dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLE;
|
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|
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unlock:
|
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spin_unlock_irq(ap->lock);
|
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|
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return rc ? rc : snprintf(buf, 20, "%u\n", ncq_prio_enable);
|
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}
|
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|
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static ssize_t ata_ncq_prio_enable_store(struct device *device,
|
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struct device_attribute *attr,
|
||||
const char *buf, size_t len)
|
||||
{
|
||||
struct scsi_device *sdev = to_scsi_device(device);
|
||||
struct ata_port *ap;
|
||||
struct ata_device *dev;
|
||||
long int input;
|
||||
int rc;
|
||||
|
||||
rc = kstrtol(buf, 10, &input);
|
||||
if (rc)
|
||||
return rc;
|
||||
if ((input < 0) || (input > 1))
|
||||
return -EINVAL;
|
||||
|
||||
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 (input)
|
||||
dev->flags |= ATA_DFLAG_NCQ_PRIO_ENABLE;
|
||||
else
|
||||
dev->flags &= ~ATA_DFLAG_NCQ_PRIO_ENABLE;
|
||||
|
||||
dev->link->eh_info.action |= ATA_EH_REVALIDATE;
|
||||
dev->link->eh_info.flags |= ATA_EHI_QUIET;
|
||||
ata_port_schedule_eh(ap);
|
||||
spin_unlock_irq(ap->lock);
|
||||
|
||||
ata_port_wait_eh(ap);
|
||||
|
||||
if (input) {
|
||||
spin_lock_irq(ap->lock);
|
||||
if (!(dev->flags & ATA_DFLAG_NCQ_PRIO)) {
|
||||
dev->flags &= ~ATA_DFLAG_NCQ_PRIO_ENABLE;
|
||||
rc = -EIO;
|
||||
}
|
||||
spin_unlock_irq(ap->lock);
|
||||
}
|
||||
|
||||
return rc ? rc : len;
|
||||
}
|
||||
|
||||
DEVICE_ATTR(ncq_prio_enable, S_IRUGO | S_IWUSR,
|
||||
ata_ncq_prio_enable_show, ata_ncq_prio_enable_store);
|
||||
EXPORT_SYMBOL_GPL(dev_attr_ncq_prio_enable);
|
||||
|
||||
void ata_scsi_set_sense(struct ata_device *dev, struct scsi_cmnd *cmd,
|
||||
u8 sk, u8 asc, u8 ascq)
|
||||
{
|
||||
|
|
@ -380,100 +236,12 @@ static void ata_scsi_set_invalid_parameter(struct ata_device *dev,
|
|||
field, 0xff, 0);
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct Scsi_Host *shost = class_to_shost(dev);
|
||||
struct ata_port *ap = ata_shost_to_port(shost);
|
||||
if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM))
|
||||
return ap->ops->em_store(ap, buf, count);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct Scsi_Host *shost = class_to_shost(dev);
|
||||
struct ata_port *ap = ata_shost_to_port(shost);
|
||||
|
||||
if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM))
|
||||
return ap->ops->em_show(ap, buf);
|
||||
return -EINVAL;
|
||||
}
|
||||
DEVICE_ATTR(em_message, S_IRUGO | S_IWUSR,
|
||||
ata_scsi_em_message_show, ata_scsi_em_message_store);
|
||||
EXPORT_SYMBOL_GPL(dev_attr_em_message);
|
||||
|
||||
static ssize_t
|
||||
ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct Scsi_Host *shost = class_to_shost(dev);
|
||||
struct ata_port *ap = ata_shost_to_port(shost);
|
||||
|
||||
return snprintf(buf, 23, "%d\n", ap->em_message_type);
|
||||
}
|
||||
DEVICE_ATTR(em_message_type, S_IRUGO,
|
||||
ata_scsi_em_message_type_show, NULL);
|
||||
EXPORT_SYMBOL_GPL(dev_attr_em_message_type);
|
||||
|
||||
static ssize_t
|
||||
ata_scsi_activity_show(struct device *dev, struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
struct scsi_device *sdev = to_scsi_device(dev);
|
||||
struct ata_port *ap = ata_shost_to_port(sdev->host);
|
||||
struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
|
||||
|
||||
if (atadev && ap->ops->sw_activity_show &&
|
||||
(ap->flags & ATA_FLAG_SW_ACTIVITY))
|
||||
return ap->ops->sw_activity_show(atadev, buf);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
ata_scsi_activity_store(struct device *dev, struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct scsi_device *sdev = to_scsi_device(dev);
|
||||
struct ata_port *ap = ata_shost_to_port(sdev->host);
|
||||
struct ata_device *atadev = ata_scsi_find_dev(ap, sdev);
|
||||
enum sw_activity val;
|
||||
int rc;
|
||||
|
||||
if (atadev && ap->ops->sw_activity_store &&
|
||||
(ap->flags & ATA_FLAG_SW_ACTIVITY)) {
|
||||
val = simple_strtoul(buf, NULL, 0);
|
||||
switch (val) {
|
||||
case OFF: case BLINK_ON: case BLINK_OFF:
|
||||
rc = ap->ops->sw_activity_store(atadev, val);
|
||||
if (!rc)
|
||||
return count;
|
||||
else
|
||||
return rc;
|
||||
}
|
||||
}
|
||||
return -EINVAL;
|
||||
}
|
||||
DEVICE_ATTR(sw_activity, S_IWUSR | S_IRUGO, ata_scsi_activity_show,
|
||||
ata_scsi_activity_store);
|
||||
EXPORT_SYMBOL_GPL(dev_attr_sw_activity);
|
||||
|
||||
struct device_attribute *ata_common_sdev_attrs[] = {
|
||||
&dev_attr_unload_heads,
|
||||
NULL
|
||||
};
|
||||
EXPORT_SYMBOL_GPL(ata_common_sdev_attrs);
|
||||
|
||||
struct device_attribute *ata_ncq_sdev_attrs[] = {
|
||||
&dev_attr_unload_heads,
|
||||
&dev_attr_ncq_prio_enable,
|
||||
NULL
|
||||
};
|
||||
EXPORT_SYMBOL_GPL(ata_ncq_sdev_attrs);
|
||||
|
||||
/**
|
||||
* ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd.
|
||||
* @sdev: SCSI device for which BIOS geometry is to be determined
|
||||
|
|
@ -1391,73 +1159,6 @@ void ata_scsi_slave_destroy(struct scsi_device *sdev)
|
|||
}
|
||||
EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy);
|
||||
|
||||
/**
|
||||
* __ata_change_queue_depth - helper for ata_scsi_change_queue_depth
|
||||
* @ap: ATA port to which the device change the queue depth
|
||||
* @sdev: SCSI device to configure queue depth for
|
||||
* @queue_depth: new queue depth
|
||||
*
|
||||
* libsas and libata have different approaches for associating a sdev to
|
||||
* its ata_port.
|
||||
*
|
||||
*/
|
||||
int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev,
|
||||
int queue_depth)
|
||||
{
|
||||
struct ata_device *dev;
|
||||
unsigned long flags;
|
||||
|
||||
if (queue_depth < 1 || queue_depth == sdev->queue_depth)
|
||||
return sdev->queue_depth;
|
||||
|
||||
dev = ata_scsi_find_dev(ap, sdev);
|
||||
if (!dev || !ata_dev_enabled(dev))
|
||||
return sdev->queue_depth;
|
||||
|
||||
/* NCQ enabled? */
|
||||
spin_lock_irqsave(ap->lock, flags);
|
||||
dev->flags &= ~ATA_DFLAG_NCQ_OFF;
|
||||
if (queue_depth == 1 || !ata_ncq_enabled(dev)) {
|
||||
dev->flags |= ATA_DFLAG_NCQ_OFF;
|
||||
queue_depth = 1;
|
||||
}
|
||||
spin_unlock_irqrestore(ap->lock, flags);
|
||||
|
||||
/* limit and apply queue depth */
|
||||
queue_depth = min(queue_depth, sdev->host->can_queue);
|
||||
queue_depth = min(queue_depth, ata_id_queue_depth(dev->id));
|
||||
queue_depth = min(queue_depth, ATA_MAX_QUEUE);
|
||||
|
||||
if (sdev->queue_depth == queue_depth)
|
||||
return -EINVAL;
|
||||
|
||||
return scsi_change_queue_depth(sdev, queue_depth);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(__ata_change_queue_depth);
|
||||
|
||||
/**
|
||||
* ata_scsi_change_queue_depth - SCSI callback for queue depth config
|
||||
* @sdev: SCSI device to configure queue depth for
|
||||
* @queue_depth: new queue depth
|
||||
*
|
||||
* This is libata standard hostt->change_queue_depth callback.
|
||||
* SCSI will call into this callback when user tries to set queue
|
||||
* depth via sysfs.
|
||||
*
|
||||
* LOCKING:
|
||||
* SCSI layer (we don't care)
|
||||
*
|
||||
* RETURNS:
|
||||
* Newly configured queue depth.
|
||||
*/
|
||||
int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth)
|
||||
{
|
||||
struct ata_port *ap = ata_shost_to_port(sdev->host);
|
||||
|
||||
return __ata_change_queue_depth(ap, sdev, queue_depth);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(ata_scsi_change_queue_depth);
|
||||
|
||||
/**
|
||||
* ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command
|
||||
* @qc: Storage for translated ATA taskfile
|
||||
|
|
@ -3094,7 +2795,7 @@ static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap,
|
|||
* RETURNS:
|
||||
* Associated ATA device, or %NULL if not found.
|
||||
*/
|
||||
static struct ata_device *
|
||||
struct ata_device *
|
||||
ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev)
|
||||
{
|
||||
struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev);
|
||||
|
|
|
|||
|
|
@ -112,6 +112,8 @@ static inline void ata_acpi_bind_dev(struct ata_device *dev) {}
|
|||
#endif
|
||||
|
||||
/* libata-scsi.c */
|
||||
extern struct ata_device *ata_scsi_find_dev(struct ata_port *ap,
|
||||
const struct scsi_device *scsidev);
|
||||
extern int ata_scsi_add_hosts(struct ata_host *host,
|
||||
struct scsi_host_template *sht);
|
||||
extern void ata_scsi_scan_host(struct ata_port *ap, int sync);
|
||||
|
|
|
|||
|
|
@ -530,12 +530,14 @@ typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes,
|
|||
unsigned long deadline);
|
||||
typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes);
|
||||
|
||||
extern struct device_attribute dev_attr_link_power_management_policy;
|
||||
extern struct device_attribute dev_attr_unload_heads;
|
||||
#ifdef CONFIG_SATA_HOST
|
||||
extern struct device_attribute dev_attr_link_power_management_policy;
|
||||
extern struct device_attribute dev_attr_ncq_prio_enable;
|
||||
extern struct device_attribute dev_attr_em_message_type;
|
||||
extern struct device_attribute dev_attr_em_message;
|
||||
extern struct device_attribute dev_attr_sw_activity;
|
||||
#endif
|
||||
|
||||
enum sw_activity {
|
||||
OFF,
|
||||
|
|
@ -1371,7 +1373,6 @@ extern int ata_link_nr_enabled(struct ata_link *link);
|
|||
extern const struct ata_port_operations ata_base_port_ops;
|
||||
extern const struct ata_port_operations sata_port_ops;
|
||||
extern struct device_attribute *ata_common_sdev_attrs[];
|
||||
extern struct device_attribute *ata_ncq_sdev_attrs[];
|
||||
|
||||
/*
|
||||
* All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
|
||||
|
|
@ -1399,10 +1400,14 @@ extern struct device_attribute *ata_ncq_sdev_attrs[];
|
|||
__ATA_BASE_SHT(drv_name), \
|
||||
.sdev_attrs = ata_common_sdev_attrs
|
||||
|
||||
#ifdef CONFIG_SATA_HOST
|
||||
extern struct device_attribute *ata_ncq_sdev_attrs[];
|
||||
|
||||
#define ATA_NCQ_SHT(drv_name) \
|
||||
__ATA_BASE_SHT(drv_name), \
|
||||
.sdev_attrs = ata_ncq_sdev_attrs, \
|
||||
.change_queue_depth = ata_scsi_change_queue_depth
|
||||
#endif
|
||||
|
||||
/*
|
||||
* PMP helpers
|
||||
|
|
|
|||
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