Pass queue_depth change requests to libata, and prevent queue_type changes for ATA devices. Otherwise: 1/ we do not honor the libata specific restrictions on the queue depth 2/ libsas drivers that do not set sdev->tagged_supported are unable to change the queue_depth of ata devices via sysfs Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: Xiangliang Yu <yuxiangl@xxxxxxxxxxx> Cc: Jack Wang <jack_wang@xxxxxxxxx> Cc: Mark Salyzyn <msalyzyn@xxxxxxxxxxxxxx> Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx> --- drivers/ata/libata-core.c | 1 + drivers/ata/libata-scsi.c | 44 +++++++++++++++++++++++------------ drivers/scsi/libsas/sas_scsi_host.c | 11 ++++++++- include/linux/libata.h | 2 ++ 4 files changed, 42 insertions(+), 16 deletions(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 4a3a5ae..d26c7f4 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -6713,6 +6713,7 @@ EXPORT_SYMBOL_GPL(ata_scsi_queuecmd); EXPORT_SYMBOL_GPL(ata_scsi_slave_config); EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy); EXPORT_SYMBOL_GPL(ata_scsi_change_queue_depth); +EXPORT_SYMBOL_GPL(__ata_change_queue_depth); EXPORT_SYMBOL_GPL(sata_scr_valid); EXPORT_SYMBOL_GPL(sata_scr_read); EXPORT_SYMBOL_GPL(sata_scr_write); diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 46d087f..19ba770 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -1215,25 +1215,15 @@ void ata_scsi_slave_destroy(struct scsi_device *sdev) } /** - * ata_scsi_change_queue_depth - SCSI callback for queue depth config - * @sdev: SCSI device to configure queue depth for - * @queue_depth: new queue depth - * @reason: calling context - * - * This is libata standard hostt->change_queue_depth callback. - * SCSI will call into this callback when user tries to set queue - * depth via sysfs. + * __ata_change_queue_depth - helper for ata_scsi_change_queue_depth * - * LOCKING: - * SCSI layer (we don't care) + * libsas and libata have different approaches for associating a sdev to + * its ata_port. * - * RETURNS: - * Newly configured queue depth. */ -int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, - int reason) +int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, + int queue_depth, int reason) { - struct ata_port *ap = ata_shost_to_port(sdev->host); struct ata_device *dev; unsigned long flags; @@ -1269,6 +1259,30 @@ int ata_scsi_change_queue_depth(struct scsi_device *sdev, int 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 + * @reason: calling context + * + * 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, + int reason) +{ + struct ata_port *ap = ata_shost_to_port(sdev->host); + + return __ata_change_queue_depth(ap, sdev, queue_depth, reason); +} + +/** * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command * @qc: Storage for translated ATA taskfile * diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c index eeba76c..4c6923c 100644 --- a/drivers/scsi/libsas/sas_scsi_host.c +++ b/drivers/scsi/libsas/sas_scsi_host.c @@ -831,8 +831,13 @@ void sas_slave_destroy(struct scsi_device *scsi_dev) int sas_change_queue_depth(struct scsi_device *scsi_dev, int new_depth, int reason) { + struct domain_device *dev = sdev_to_domain_dev(scsi_dev); int res = min(new_depth, SAS_MAX_QD); + if (dev_is_sata(dev)) + return __ata_change_queue_depth(dev->sata_dev.ap, scsi_dev, + new_depth, reason); + if (reason != SCSI_QDEPTH_DEFAULT) return -EOPNOTSUPP; @@ -840,7 +845,6 @@ int sas_change_queue_depth(struct scsi_device *scsi_dev, int new_depth, scsi_adjust_queue_depth(scsi_dev, scsi_get_tag_type(scsi_dev), res); else { - struct domain_device *dev = sdev_to_domain_dev(scsi_dev); sas_printk("device %llx LUN %x queue depth changed to 1\n", SAS_ADDR(dev->sas_addr), scsi_dev->lun); @@ -853,6 +857,11 @@ int sas_change_queue_depth(struct scsi_device *scsi_dev, int new_depth, int sas_change_queue_type(struct scsi_device *scsi_dev, int qt) { + struct domain_device *dev = sdev_to_domain_dev(scsi_dev); + + if (dev_is_sata(dev)) + return -EINVAL; + if (!scsi_dev->tagged_supported) return 0; diff --git a/include/linux/libata.h b/include/linux/libata.h index efd6f98..23fa829 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -1052,6 +1052,8 @@ extern int ata_scsi_slave_config(struct scsi_device *sdev); extern void ata_scsi_slave_destroy(struct scsi_device *sdev); extern int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth, int reason); +extern int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, + int queue_depth, int reason); 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); -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html