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scsi: always assign block layer tags if enabled

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Allow a driver to ask for block layer tags by setting .use_blk_tags in the
host template, in which case it will always see a valid value in
request->tag, similar to the behavior when using blk-mq.  This means even
SCSI "untagged" commands will now have a tag, which is especially useful
when using a host-wide tag map.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
This commit is contained in:
Christoph Hellwig 2014-11-03 14:09:02 +01:00
parent e2eddf4d53
commit 2ecb204d07
33 changed files with 86 additions and 168 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
Documentation/scsi/scsi_mid_low_api.txt
View File

@ -366,13 +366,11 @@ is initialized. The functions below are listed alphabetically and their
names all start with "scsi_".
Summary:
scsi_activate_tcq - turn on tag command queueing
scsi_add_device - creates new scsi device (lu) instance
scsi_add_host - perform sysfs registration and set up transport class
scsi_adjust_queue_depth - change the queue depth on a SCSI device
scsi_bios_ptable - return copy of block device's partition table
scsi_block_requests - prevent further commands being queued to given host
scsi_deactivate_tcq - turn off tag command queueing
scsi_host_alloc - return a new scsi_host instance whose refcount==1
scsi_host_get - increments Scsi_Host instance's refcount
scsi_host_put - decrements Scsi_Host instance's refcount (free if 0)
@ -389,24 +387,6 @@ Summary:
Details:
/**
* scsi_activate_tcq - turn on tag command queueing ("ordered" task attribute)
* @sdev: device to turn on TCQ for
* @depth: queue depth
*
* Returns nothing
*
* Might block: no
*
* Notes: Eventually, it is hoped depth would be the maximum depth
* the device could cope with and the real queue depth
* would be adjustable from 0 to depth.
*
* Defined (inline) in: include/scsi/scsi_tcq.h
**/
void scsi_activate_tcq(struct scsi_device *sdev, int depth)
/**
* scsi_add_device - creates new scsi device (lu) instance
* @shost: pointer to scsi host instance
@ -471,9 +451,7 @@ int scsi_add_host(struct Scsi_Host *shost, struct device * dev)
*
* Notes: Can be invoked any time on a SCSI device controlled by this
* LLD. [Specifically during and after slave_configure() and prior to
* slave_destroy().] Can safely be invoked from interrupt code. Actual
* queue depth change may be delayed until the next command is being
* processed. See also scsi_activate_tcq() and scsi_deactivate_tcq().
* slave_destroy().] Can safely be invoked from interrupt code.
*
* Defined in: drivers/scsi/scsi.c [see source code for more notes]
*
@ -514,20 +492,6 @@ unsigned char *scsi_bios_ptable(struct block_device *dev)
void scsi_block_requests(struct Scsi_Host * shost)
/**
* scsi_deactivate_tcq - turn off tag command queueing
* @sdev: device to turn off TCQ for
* @depth: queue depth (stored in sdev)
*
* Returns nothing
*
* Might block: no
*
* Defined (inline) in: include/scsi/scsi_tcq.h
**/
void scsi_deactivate_tcq(struct scsi_device *sdev, int depth)
/**
* scsi_host_alloc - create a scsi host adapter instance and perform basic
* initialization.

1
drivers/message/fusion/mptsas.c
View File

@ -1994,6 +1994,7 @@ static struct scsi_host_template mptsas_driver_template = {
.cmd_per_lun = 7,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = mptscsih_host_attrs,
.use_blk_tags = 1,
};
static int mptsas_get_linkerrors(struct sas_phy *phy)

12
drivers/scsi/53c700.c
View File

@ -327,6 +327,7 @@ NCR_700_detect(struct scsi_host_template *tpnt,
tpnt->slave_alloc = NCR_700_slave_alloc;
tpnt->change_queue_depth = NCR_700_change_queue_depth;
tpnt->change_queue_type = NCR_700_change_queue_type;
tpnt->use_blk_tags = 1;
if(tpnt->name == NULL)
tpnt->name = "53c700";
@ -902,7 +903,7 @@ process_message(struct Scsi_Host *host, struct NCR_700_Host_Parameters *hostdata
NCR_700_set_tag_neg_state(SCp->device, NCR_700_FINISHED_TAG_NEGOTIATION);
hostdata->tag_negotiated &= ~(1<<scmd_id(SCp));
SCp->device->tagged_supported = 0;
scsi_deactivate_tcq(SCp->device, host->cmd_per_lun);
scsi_adjust_queue_depth(SCp->device, 0, host->cmd_per_lun);
} else {
shost_printk(KERN_WARNING, host,
"(%d:%d) Unexpected REJECT Message %s\n",
@ -2049,8 +2050,7 @@ NCR_700_slave_configure(struct scsi_device *SDp)
/* to do here: allocate memory; build a queue_full list */
if(SDp->tagged_supported) {
scsi_set_tag_type(SDp, MSG_ORDERED_TAG);
scsi_activate_tcq(SDp, NCR_700_DEFAULT_TAGS);
scsi_adjust_queue_depth(SDp, MSG_ORDERED_TAG, NCR_700_DEFAULT_TAGS);
NCR_700_set_tag_neg_state(SDp, NCR_700_START_TAG_NEGOTIATION);
} else {
/* initialise to default depth */
@ -2094,8 +2094,6 @@ static int NCR_700_change_queue_type(struct scsi_device *SDp, int tag_type)
struct NCR_700_Host_Parameters *hostdata =
(struct NCR_700_Host_Parameters *)SDp->host->hostdata[0];
scsi_set_tag_type(SDp, tag_type);
/* We have a global (per target) flag to track whether TCQ is
* enabled, so we'll be turning it off for the entire target here.
* our tag algorithm will fail if we mix tagged and untagged commands,
@ -2106,12 +2104,12 @@ static int NCR_700_change_queue_type(struct scsi_device *SDp, int tag_type)
if (!tag_type) {
/* shift back to the default unqueued number of commands
* (the user can still raise this) */
scsi_deactivate_tcq(SDp, SDp->host->cmd_per_lun);
scsi_adjust_queue_depth(SDp, 0, SDp->host->cmd_per_lun);
hostdata->tag_negotiated &= ~(1 << sdev_id(SDp));
} else {
/* Here, we cleared the negotiation flag above, so this
* will force the driver to renegotiate */
scsi_activate_tcq(SDp, SDp->queue_depth);
scsi_adjust_queue_depth(SDp, tag_type, SDp->queue_depth);
if (change_tag)
NCR_700_set_tag_neg_state(SDp, NCR_700_START_TAG_NEGOTIATION);
}

11
drivers/scsi/aic7xxx/aic79xx_osm.c
View File

@ -925,6 +925,7 @@ struct scsi_host_template aic79xx_driver_template = {
.slave_configure = ahd_linux_slave_configure,
.target_alloc = ahd_linux_target_alloc,
.target_destroy = ahd_linux_target_destroy,
.use_blk_tags = 1,
};
/******************************** Bus DMA *************************************/
@ -1468,12 +1469,12 @@ ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev,
switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) {
case AHD_DEV_Q_BASIC:
scsi_set_tag_type(sdev, MSG_SIMPLE_TASK);
scsi_activate_tcq(sdev, dev->openings + dev->active);
scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TASK,
dev->openings + dev->active);
break;
case AHD_DEV_Q_TAGGED:
scsi_set_tag_type(sdev, MSG_ORDERED_TASK);
scsi_activate_tcq(sdev, dev->openings + dev->active);
scsi_adjust_queue_depth(sdev, MSG_ORDERED_TASK,
dev->openings + dev->active);
break;
default:
/*
@ -1482,7 +1483,7 @@ ahd_platform_set_tags(struct ahd_softc *ahd, struct scsi_device *sdev,
* serially on the controller/device. This should
* remove some latency.
*/
scsi_deactivate_tcq(sdev, 1);
scsi_adjust_queue_depth(sdev, 0, 1);
break;
}
}

11
drivers/scsi/aic7xxx/aic7xxx_osm.c
View File

@ -812,6 +812,7 @@ struct scsi_host_template aic7xxx_driver_template = {
.slave_configure = ahc_linux_slave_configure,
.target_alloc = ahc_linux_target_alloc,
.target_destroy = ahc_linux_target_destroy,
.use_blk_tags = 1,
};
/**************************** Tasklet Handler *********************************/
@ -1334,12 +1335,12 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev,
}
switch ((dev->flags & (AHC_DEV_Q_BASIC|AHC_DEV_Q_TAGGED))) {
case AHC_DEV_Q_BASIC:
scsi_set_tag_type(sdev, MSG_SIMPLE_TAG);
scsi_activate_tcq(sdev, dev->openings + dev->active);
scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TASK,
dev->openings + dev->active);
break;
case AHC_DEV_Q_TAGGED:
scsi_set_tag_type(sdev, MSG_ORDERED_TAG);
scsi_activate_tcq(sdev, dev->openings + dev->active);
scsi_adjust_queue_depth(sdev, MSG_ORDERED_TASK,
dev->openings + dev->active);
break;
default:
/*
@ -1348,7 +1349,7 @@ ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev,
* serially on the controller/device. This should
* remove some latency.
*/
scsi_deactivate_tcq(sdev, 2);
scsi_adjust_queue_depth(sdev, 0, 2);
break;
}
}

1
drivers/scsi/aic94xx/aic94xx_init.c
View File

@ -83,6 +83,7 @@ static struct scsi_host_template aic94xx_sht = {
.eh_bus_reset_handler = sas_eh_bus_reset_handler,
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
.use_blk_tags = 1,
};
static int asd_map_memio(struct asd_ha_struct *asd_ha)

8
drivers/scsi/bfa/bfad_im.c
View File

@ -776,11 +776,7 @@ bfad_thread_workq(struct bfad_s *bfad)
static int
bfad_im_slave_configure(struct scsi_device *sdev)
{
if (sdev->tagged_supported)
scsi_activate_tcq(sdev, bfa_lun_queue_depth);
else
scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
scsi_adjust_queue_depth(sdev, 0, bfa_lun_queue_depth);
return 0;
}
@ -804,6 +800,7 @@ struct scsi_host_template bfad_im_scsi_host_template = {
.shost_attrs = bfad_im_host_attrs,
.max_sectors = BFAD_MAX_SECTORS,
.vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
.use_blk_tags = 1,
};
struct scsi_host_template bfad_im_vport_template = {
@ -825,6 +822,7 @@ struct scsi_host_template bfad_im_vport_template = {
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = bfad_im_vport_attrs,
.max_sectors = BFAD_MAX_SECTORS,
.use_blk_tags = 1,
};
bfa_status_t

1
drivers/scsi/bnx2fc/bnx2fc_fcoe.c
View File

@ -2790,6 +2790,7 @@ static struct scsi_host_template bnx2fc_shost_template = {
.use_clustering = ENABLE_CLUSTERING,
.sg_tablesize = BNX2FC_MAX_BDS_PER_CMD,
.max_sectors = 1024,
.use_blk_tags = 1,
};
static struct libfc_function_template bnx2fc_libfc_fcn_templ = {

8
drivers/scsi/csiostor/csio_scsi.c
View File

@ -2241,11 +2241,7 @@ csio_slave_alloc(struct scsi_device *sdev)
static int
csio_slave_configure(struct scsi_device *sdev)
{
if (sdev->tagged_supported)
scsi_activate_tcq(sdev, csio_lun_qdepth);
else
scsi_deactivate_tcq(sdev, csio_lun_qdepth);
scsi_adjust_queue_depth(sdev, 0, csio_lun_qdepth);
return 0;
}
@ -2290,6 +2286,7 @@ struct scsi_host_template csio_fcoe_shost_template = {
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = csio_fcoe_lport_attrs,
.max_sectors = CSIO_MAX_SECTOR_SIZE,
.use_blk_tags = 1,
};
struct scsi_host_template csio_fcoe_shost_vport_template = {
@ -2309,6 +2306,7 @@ struct scsi_host_template csio_fcoe_shost_vport_template = {
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = csio_fcoe_vport_attrs,
.max_sectors = CSIO_MAX_SECTOR_SIZE,
.use_blk_tags = 1,
};
/*

12
drivers/scsi/esas2r/esas2r_main.c
View File

@ -260,6 +260,7 @@ static struct scsi_host_template driver_template = {
.change_queue_depth = esas2r_change_queue_depth,
.change_queue_type = scsi_change_queue_type,
.max_sectors = 0xFFFF,
.use_blk_tags = 1,
};
int sgl_page_size = 512;
@ -1278,13 +1279,10 @@ int esas2r_slave_configure(struct scsi_device *dev)
esas2r_log_dev(ESAS2R_LOG_INFO, &(dev->sdev_gendev),
"esas2r_slave_configure()");
if (dev->tagged_supported) {
scsi_set_tag_type(dev, MSG_SIMPLE_TAG);
scsi_activate_tcq(dev, cmd_per_lun);
} else {
scsi_set_tag_type(dev, 0);
scsi_deactivate_tcq(dev, cmd_per_lun);
}
if (dev->tagged_supported)
scsi_adjust_queue_depth(dev, MSG_SIMPLE_TAG, cmd_per_lun);
else
scsi_adjust_queue_depth(dev, 0, cmd_per_lun);
return 0;
}

6
drivers/scsi/esp_scsi.c
View File

@ -2419,10 +2419,9 @@ static int esp_slave_configure(struct scsi_device *dev)
queue_depth = dev->host->cmd_per_lun;
if (goal_tags) {
scsi_set_tag_type(dev, MSG_ORDERED_TAG);
scsi_activate_tcq(dev, queue_depth);
scsi_adjust_queue_depth(dev, MSG_ORDERED_TAG, queue_depth);
} else {
scsi_deactivate_tcq(dev, queue_depth);
scsi_adjust_queue_depth(dev, 0, queue_depth);
}
tp->flags |= ESP_TGT_DISCONNECT;
@ -2631,6 +2630,7 @@ struct scsi_host_template scsi_esp_template = {
.use_clustering = ENABLE_CLUSTERING,
.max_sectors = 0xffff,
.skip_settle_delay = 1,
.use_blk_tags = 1,
};
EXPORT_SYMBOL(scsi_esp_template);

1
drivers/scsi/fcoe/fcoe.c
View File

@ -288,6 +288,7 @@ static struct scsi_host_template fcoe_shost_template = {
.use_clustering = ENABLE_CLUSTERING,
.sg_tablesize = SG_ALL,
.max_sectors = 0xffff,
.use_blk_tags = 1,
};
/**

3
drivers/scsi/fnic/fnic_main.c
View File

@ -100,7 +100,7 @@ static int fnic_slave_alloc(struct scsi_device *sdev)
if (!rport || fc_remote_port_chkready(rport))
return -ENXIO;
scsi_activate_tcq(sdev, fnic_max_qdepth);
scsi_adjust_queue_depth(sdev, 0, fnic_max_qdepth);
return 0;
}
@ -121,6 +121,7 @@ static struct scsi_host_template fnic_host_template = {
.sg_tablesize = FNIC_MAX_SG_DESC_CNT,
.max_sectors = 0xffff,
.shost_attrs = fnic_attrs,
.use_blk_tags = 1,
};
static void

11
drivers/scsi/ibmvscsi/ibmvfc.c
View File

@ -2888,11 +2888,11 @@ static int ibmvfc_slave_configure(struct scsi_device *sdev)
if (sdev->type == TYPE_DISK)
sdev->allow_restart = 1;
if (sdev->tagged_supported) {
scsi_set_tag_type(sdev, MSG_SIMPLE_TAG);
scsi_activate_tcq(sdev, sdev->queue_depth);
} else
scsi_deactivate_tcq(sdev, sdev->queue_depth);
if (sdev->tagged_supported)
scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
sdev->queue_depth);
else
scsi_adjust_queue_depth(sdev, 0, sdev->queue_depth);
spin_unlock_irqrestore(shost->host_lock, flags);
return 0;
}
@ -3108,6 +3108,7 @@ static struct scsi_host_template driver_template = {
.max_sectors = IBMVFC_MAX_SECTORS,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = ibmvfc_attrs,
.use_blk_tags = 1,
};
/**

1
drivers/scsi/ipr.c
View File

@ -6317,6 +6317,7 @@ static struct scsi_host_template driver_template = {
.sdev_attrs = ipr_dev_attrs,
.proc_name = IPR_NAME,
.no_write_same = 1,
.use_blk_tags = 1,
};
/**

1
drivers/scsi/isci/init.c
View File

@ -172,6 +172,7 @@ static struct scsi_host_template isci_sht = {
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
.shost_attrs = isci_host_attrs,
.use_blk_tags = 1,
};
static struct sas_domain_function_template isci_transport_ops = {

7
drivers/scsi/libfc/fc_fcp.c
View File

@ -2160,12 +2160,7 @@ int fc_slave_alloc(struct scsi_device *sdev)
if (!rport || fc_remote_port_chkready(rport))
return -ENXIO;
if (sdev->tagged_supported)
scsi_activate_tcq(sdev, FC_FCP_DFLT_QUEUE_DEPTH);
else
scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev),
FC_FCP_DFLT_QUEUE_DEPTH);
scsi_adjust_queue_depth(sdev, 0, FC_FCP_DFLT_QUEUE_DEPTH);
return 0;
}
EXPORT_SYMBOL(fc_slave_alloc);

11
drivers/scsi/libsas/sas_scsi_host.c
View File

@ -940,15 +940,13 @@ int sas_slave_configure(struct scsi_device *scsi_dev)
sas_read_port_mode_page(scsi_dev);
if (scsi_dev->tagged_supported) {
scsi_set_tag_type(scsi_dev, MSG_SIMPLE_TAG);
scsi_activate_tcq(scsi_dev, SAS_DEF_QD);
scsi_adjust_queue_depth(scsi_dev, MSG_SIMPLE_TAG, SAS_DEF_QD);
} else {
SAS_DPRINTK("device %llx, LUN %llx doesn't support "
"TCQ\n", SAS_ADDR(dev->sas_addr),
scsi_dev->lun);
scsi_dev->tagged_supported = 0;
scsi_set_tag_type(scsi_dev, 0);
scsi_deactivate_tcq(scsi_dev, 1);
scsi_adjust_queue_depth(scsi_dev, 0, 1);
}
scsi_dev->allow_restart = 1;
@ -991,10 +989,7 @@ int sas_change_queue_type(struct scsi_device *scsi_dev, int qt)
if (!scsi_dev->tagged_supported)
return 0;
scsi_deactivate_tcq(scsi_dev, 1);
scsi_set_tag_type(scsi_dev, qt);
scsi_activate_tcq(scsi_dev, scsi_dev->queue_depth);
scsi_adjust_queue_depth(scsi_dev, qt, scsi_dev->queue_depth);
return qt;
}

7
drivers/scsi/lpfc/lpfc_scsi.c
View File

@ -5598,10 +5598,7 @@ lpfc_slave_configure(struct scsi_device *sdev)
struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata;
struct lpfc_hba *phba = vport->phba;
if (sdev->tagged_supported)
scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth);
else
scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth);
scsi_adjust_queue_depth(sdev, 0, vport->cfg_lun_queue_depth);
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
lpfc_sli_handle_fast_ring_event(phba,
@ -5986,6 +5983,7 @@ struct scsi_host_template lpfc_template = {
.vendor_id = LPFC_NL_VENDOR_ID,
.change_queue_depth = lpfc_change_queue_depth,
.change_queue_type = scsi_change_queue_type,
.use_blk_tags = 1,
};
struct scsi_host_template lpfc_vport_template = {
@ -6009,4 +6007,5 @@ struct scsi_host_template lpfc_vport_template = {
.max_sectors = 0xFFFF,
.change_queue_depth = lpfc_change_queue_depth,
.change_queue_type = scsi_change_queue_type,
.use_blk_tags = 1,
};

1
drivers/scsi/mvsas/mv_init.c
View File

@ -76,6 +76,7 @@ static struct scsi_host_template mvs_sht = {
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
.shost_attrs = mvst_host_attrs,
.use_blk_tags = 1,
};
static struct sas_domain_function_template mvs_transport_ops = {

1
drivers/scsi/pm8001/pm8001_init.c
View File

@ -89,6 +89,7 @@ static struct scsi_host_template pm8001_sht = {
.target_destroy = sas_target_destroy,
.ioctl = sas_ioctl,
.shost_attrs = pm8001_host_attrs,
.use_blk_tags = 1,
};
/**

4
drivers/scsi/pmcraid.c
View File

@ -251,7 +251,6 @@ static int pmcraid_slave_configure(struct scsi_device *scsi_dev)
if (scsi_dev->tagged_supported &&
(RES_IS_GSCSI(res->cfg_entry) || RES_IS_VSET(res->cfg_entry))) {
scsi_activate_tcq(scsi_dev, scsi_dev->queue_depth);
scsi_adjust_queue_depth(scsi_dev, MSG_SIMPLE_TAG,
scsi_dev->host->cmd_per_lun);
} else {
@ -4295,7 +4294,8 @@ static struct scsi_host_template pmcraid_host_template = {
.cmd_per_lun = PMCRAID_MAX_CMD_PER_LUN,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = pmcraid_host_attrs,
.proc_name = PMCRAID_DRIVER_NAME
.proc_name = PMCRAID_DRIVER_NAME,
.use_blk_tags = 1,
};
/*

6
drivers/scsi/qla2xxx/qla_os.c
View File

@ -269,6 +269,7 @@ struct scsi_host_template qla2xxx_driver_template = {
.shost_attrs = qla2x00_host_attrs,
.supported_mode = MODE_INITIATOR,
.use_blk_tags = 1,
};
static struct scsi_transport_template *qla2xxx_transport_template = NULL;
@ -1404,10 +1405,7 @@ qla2xxx_slave_configure(struct scsi_device *sdev)
if (IS_T10_PI_CAPABLE(vha->hw))
blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
if (sdev->tagged_supported)
scsi_activate_tcq(sdev, req->max_q_depth);
else
scsi_deactivate_tcq(sdev, req->max_q_depth);
scsi_adjust_queue_depth(sdev, 0, req->max_q_depth);
return 0;
}

10
drivers/scsi/qla4xxx/ql4_os.c
View File

@ -163,7 +163,6 @@ static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
static int qla4xxx_slave_alloc(struct scsi_device *device);
static int qla4xxx_slave_configure(struct scsi_device *device);
static void qla4xxx_slave_destroy(struct scsi_device *sdev);
static umode_t qla4_attr_is_visible(int param_type, int param);
static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
@ -206,7 +205,6 @@ static struct scsi_host_template qla4xxx_driver_template = {
.slave_configure = qla4xxx_slave_configure,
.slave_alloc = qla4xxx_slave_alloc,
.slave_destroy = qla4xxx_slave_destroy,
.change_queue_depth = qla4xxx_change_queue_depth,
.this_id = -1,
@ -218,6 +216,7 @@ static struct scsi_host_template qla4xxx_driver_template = {
.shost_attrs = qla4xxx_host_attrs,
.host_reset = qla4xxx_host_reset,
.vendor_id = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
.use_blk_tags = 1,
};
static struct iscsi_transport qla4xxx_iscsi_transport = {
@ -9065,7 +9064,7 @@ static int qla4xxx_slave_alloc(struct scsi_device *sdev)
if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
queue_depth = ql4xmaxqdepth;
scsi_activate_tcq(sdev, queue_depth);
scsi_adjust_queue_depth(sdev, 0, queue_depth);
return 0;
}
@ -9075,11 +9074,6 @@ static int qla4xxx_slave_configure(struct scsi_device *sdev)
return 0;
}
static void qla4xxx_slave_destroy(struct scsi_device *sdev)
{
scsi_deactivate_tcq(sdev, 1);
}
static int qla4xxx_change_queue_depth(struct scsi_device *sdev, int qdepth,
int reason)
{

12
drivers/scsi/scsi.c
View File

@ -864,16 +864,12 @@ EXPORT_SYMBOL(scsi_track_queue_full);
*/
int scsi_change_queue_type(struct scsi_device *sdev, int tag_type)
{
if (sdev->tagged_supported) {
scsi_set_tag_type(sdev, tag_type);
if (tag_type)
scsi_activate_tcq(sdev, sdev->queue_depth);
else
scsi_deactivate_tcq(sdev, sdev->queue_depth);
} else
tag_type = 0;
if (!sdev->tagged_supported)
return 0;
scsi_adjust_queue_depth(sdev, tag_type, sdev->queue_depth);
return tag_type;
}
EXPORT_SYMBOL(scsi_change_queue_type);

6
drivers/scsi/scsi_scan.c
View File

@ -286,6 +286,12 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget,
}
WARN_ON_ONCE(!blk_get_queue(sdev->request_queue));
sdev->request_queue->queuedata = sdev;
if (!shost_use_blk_mq(sdev->host) &&
(shost->bqt || shost->hostt->use_blk_tags)) {
blk_queue_init_tags(sdev->request_queue,
sdev->host->cmd_per_lun, shost->bqt);
}
scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
scsi_sysfs_device_initialize(sdev);

10
drivers/scsi/stex.c
View File

@ -549,7 +549,7 @@ stex_slave_alloc(struct scsi_device *sdev)
/* Cheat: usually extracted from Inquiry data */
sdev->tagged_supported = 1;
scsi_activate_tcq(sdev, sdev->host->can_queue);
scsi_adjust_queue_depth(sdev, 0, sdev->host->can_queue);
return 0;
}
@ -565,12 +565,6 @@ stex_slave_config(struct scsi_device *sdev)
return 0;
}
static void
stex_slave_destroy(struct scsi_device *sdev)
{
scsi_deactivate_tcq(sdev, 1);
}
static int
stex_queuecommand_lck(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
{
@ -1390,10 +1384,10 @@ static struct scsi_host_template driver_template = {
.queuecommand = stex_queuecommand,
.slave_alloc = stex_slave_alloc,
.slave_configure = stex_slave_config,
.slave_destroy = stex_slave_destroy,
.eh_abort_handler = stex_abort,
.eh_host_reset_handler = stex_reset,
.this_id = -1,
.use_blk_tags = 1,
};
static struct pci_device_id stex_pci_tbl[] = {

3
drivers/scsi/tmscsim.c
View File

@ -2187,7 +2187,7 @@ static int dc390_slave_configure(struct scsi_device *sdev)
acb->scan_devices = 0;
if (sdev->tagged_supported && (dcb->DevMode & TAG_QUEUEING_)) {
dcb->SyncMode |= EN_TAG_QUEUEING;
scsi_activate_tcq(sdev, acb->TagMaxNum);
scsi_adjust_queue_depth(sdev, 0, acb->TagMaxNum);
}
return 0;
@ -2209,6 +2209,7 @@ static struct scsi_host_template driver_template = {
.cmd_per_lun = 1,
.use_clustering = ENABLE_CLUSTERING,
.max_sectors = 0x4000, /* 8MiB = 16 * 1024 * 512 */
.use_blk_tags = 1,
};
/***********************************************************************

5
drivers/scsi/ufs/ufshcd.c
View File

@ -2695,7 +2695,8 @@ static void ufshcd_set_queue_depth(struct scsi_device *sdev)
dev_dbg(hba->dev, "%s: activate tcq with queue depth %d\n",
__func__, lun_qdepth);
scsi_activate_tcq(sdev, lun_qdepth);
if (sdev->tagged_supported)
scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), lun_qdepth);
}
/*
@ -2842,7 +2843,6 @@ static void ufshcd_slave_destroy(struct scsi_device *sdev)
struct ufs_hba *hba;
hba = shost_priv(sdev->host);
scsi_deactivate_tcq(sdev, hba->nutrs);
/* Drop the reference as it won't be needed anymore */
if (ufshcd_scsi_to_upiu_lun(sdev->lun) == UFS_UPIU_UFS_DEVICE_WLUN)
hba->sdev_ufs_device = NULL;
@ -4235,6 +4235,7 @@ static struct scsi_host_template ufshcd_driver_template = {
.cmd_per_lun = UFSHCD_CMD_PER_LUN,
.can_queue = UFSHCD_CAN_QUEUE,
.max_host_blocked = 1,
.use_blk_tags = 1,
};
static int ufshcd_config_vreg_load(struct device *dev, struct ufs_vreg *vreg,

2
drivers/target/loopback/tcm_loop.c
View File

@ -407,7 +407,6 @@ static int tcm_loop_slave_alloc(struct scsi_device *sd)
static int tcm_loop_slave_configure(struct scsi_device *sd)
{
if (sd->tagged_supported) {
scsi_activate_tcq(sd, sd->queue_depth);
scsi_adjust_queue_depth(sd, MSG_SIMPLE_TAG,
sd->host->cmd_per_lun);
} else {
@ -437,6 +436,7 @@ static struct scsi_host_template tcm_loop_driver_template = {
.slave_alloc = tcm_loop_slave_alloc,
.slave_configure = tcm_loop_slave_configure,
.module = THIS_MODULE,
.use_blk_tags = 1,
};
static int tcm_loop_driver_probe(struct device *dev)

4
drivers/usb/storage/uas.c
View File

@ -799,8 +799,7 @@ static int uas_slave_configure(struct scsi_device *sdev)
if (devinfo->flags & US_FL_NO_REPORT_OPCODES)
sdev->no_report_opcodes = 1;
scsi_set_tag_type(sdev, MSG_ORDERED_TAG);
scsi_activate_tcq(sdev, devinfo->qdepth - 2);
scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, devinfo->qdepth - 2);
return 0;
}
@ -824,6 +823,7 @@ static struct scsi_host_template uas_host_template = {
* allocator.
*/
.disable_blk_mq = true,
.use_blk_tags = 1,
};
#define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \

5
include/scsi/scsi_host.h
View File

@ -421,6 +421,11 @@ struct scsi_host_template {
*/
unsigned char present;
/*
* Let the block layer assigns tags to all commands.
*/
unsigned use_blk_tags:1;
/*
* This specifies the mode that a LLD supports.
*/

34
include/scsi/scsi_tcq.h
View File

@ -45,40 +45,6 @@ static inline void scsi_set_tag_type(struct scsi_device *sdev, int tag)
break;
}
}
/**
* scsi_activate_tcq - turn on tag command queueing
* @SDpnt: device to turn on TCQ for
* @depth: queue depth
*
* Notes:
* Eventually, I hope depth would be the maximum depth
* the device could cope with and the real queue depth
* would be adjustable from 0 to depth.
**/
static inline void scsi_activate_tcq(struct scsi_device *sdev, int depth)
{
if (!sdev->tagged_supported)
return;
if (shost_use_blk_mq(sdev->host))
queue_flag_set_unlocked(QUEUE_FLAG_QUEUED, sdev->request_queue);
else if (!blk_queue_tagged(sdev->request_queue))
blk_queue_init_tags(sdev->request_queue, depth,
sdev->host->bqt);
scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
}
/**
* scsi_deactivate_tcq - turn off tag command queueing
* @SDpnt: device to turn off TCQ for
**/
static inline void scsi_deactivate_tcq(struct scsi_device *sdev, int depth)
{
if (blk_queue_tagged(sdev->request_queue))
blk_queue_free_tags(sdev->request_queue);
scsi_adjust_queue_depth(sdev, 0, depth);
}
static inline struct scsi_cmnd *scsi_mq_find_tag(struct Scsi_Host *shost,
int unique_tag)