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authorLinus Torvalds <torvalds@linux-foundation.org>2010-10-22 17:34:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-22 17:34:15 -0700
commitc70b5296e775cde46cfcb2d860ba160108a5ec7a (patch)
tree30419cb982acca44499236adcca65f2f87698c74 /drivers/s390/scsi/zfcp_scsi.c
parent80c226fbef56576946c9655fcb2ab62e63404d12 (diff)
parent58ff4bd042adf8013c8f70fd03c2c0f8d022e387 (diff)
downloadblackbird-op-linux-c70b5296e775cde46cfcb2d860ba160108a5ec7a.tar.gz
blackbird-op-linux-c70b5296e775cde46cfcb2d860ba160108a5ec7a.zip
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (84 commits) [SCSI] be2iscsi: SGE Len == 64K [SCSI] be2iscsi: Remove premature free of cid [SCSI] be2iscsi: More time for FW [SCSI] libsas: fix bug for vacant phy [SCSI] sd: Fix overflow with big physical blocks [SCSI] st: add MTWEOFI to write filemarks without flushing drive buffer [SCSI] libsas: Don't issue commands to devices that have been hot-removed [SCSI] megaraid_sas: Add Online Controller Reset to MegaRAID SAS drive [SCSI] lpfc 8.3.17: Update lpfc driver version to 8.3.17 [SCSI] lpfc 8.3.17: Replace function reset methodology [SCSI] lpfc 8.3.17: SCSI fixes [SCSI] lpfc 8.3.17: BSG fixes [SCSI] lpfc 8.3.17: SLI Additions and Fixes [SCSI] lpfc 8.3.17: Code Cleanup and Locking fixes [SCSI] zfcp: Remove scsi_cmnd->serial_number from debug traces [SCSI] ipr: fix array error logging [SCSI] aha152x: enable PCMCIA on 64bit [SCSI] scsi_dh_alua: Handle all states correctly [SCSI] cxgb4i: connection and ddp setting update [SCSI] cxgb3i: fixed connection over vlan ...
Diffstat (limited to 'drivers/s390/scsi/zfcp_scsi.c')
-rw-r--r--drivers/s390/scsi/zfcp_scsi.c158
1 files changed, 55 insertions, 103 deletions
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 208256e39def..50286d8707f3 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -49,11 +49,12 @@ static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth,
return sdev->queue_depth;
}
-static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
+static void zfcp_scsi_slave_destroy(struct scsi_device *sdev)
{
- struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
- unit->device = NULL;
- put_device(&unit->dev);
+ struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
+
+ zfcp_erp_lun_shutdown_wait(sdev, "scssd_1");
+ put_device(&zfcp_sdev->port->dev);
}
static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
@@ -78,23 +79,16 @@ static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
void (*done) (struct scsi_cmnd *))
{
- struct zfcp_unit *unit;
- struct zfcp_adapter *adapter;
- int status, scsi_result, ret;
+ struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
+ struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
+ int status, scsi_result, ret;
/* reset the status for this request */
scpnt->result = 0;
scpnt->host_scribble = NULL;
scpnt->scsi_done = done;
- /*
- * figure out adapter and target device
- * (stored there by zfcp_scsi_slave_alloc)
- */
- adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
- unit = scpnt->device->hostdata;
-
scsi_result = fc_remote_port_chkready(rport);
if (unlikely(scsi_result)) {
scpnt->result = scsi_result;
@@ -103,11 +97,11 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
return 0;
}
- status = atomic_read(&unit->status);
+ status = atomic_read(&zfcp_sdev->status);
if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) &&
- !(atomic_read(&unit->port->status) &
+ !(atomic_read(&zfcp_sdev->port->status) &
ZFCP_STATUS_COMMON_ERP_FAILED)) {
- /* only unit access denied, but port is good
+ /* only LUN access denied, but port is good
* not covered by FC transport, have to fail here */
zfcp_scsi_command_fail(scpnt, DID_ERROR);
return 0;
@@ -115,8 +109,8 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) {
/* This could be either
- * open unit pending: this is temporary, will result in
- * open unit or ERP_FAILED, so retry command
+ * open LUN pending: this is temporary, will result in
+ * open LUN or ERP_FAILED, so retry command
* call to rport_delete pending: mimic retry from
* fc_remote_port_chkready until rport is BLOCKED
*/
@@ -124,7 +118,7 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
return 0;
}
- ret = zfcp_fsf_send_fcp_command_task(unit, scpnt);
+ ret = zfcp_fsf_fcp_cmnd(scpnt);
if (unlikely(ret == -EBUSY))
return SCSI_MLQUEUE_DEVICE_BUSY;
else if (unlikely(ret < 0))
@@ -133,45 +127,42 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
return ret;
}
-static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *adapter,
- unsigned int id, u64 lun)
+static int zfcp_scsi_slave_alloc(struct scsi_device *sdev)
{
- unsigned long flags;
+ struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
+ struct zfcp_adapter *adapter =
+ (struct zfcp_adapter *) sdev->host->hostdata[0];
+ struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_port *port;
- struct zfcp_unit *unit = NULL;
+ struct zfcp_unit *unit;
- read_lock_irqsave(&adapter->port_list_lock, flags);
- list_for_each_entry(port, &adapter->port_list, list) {
- if (!port->rport || (id != port->rport->scsi_target_id))
- continue;
- unit = zfcp_get_unit_by_lun(port, lun);
- if (unit)
- break;
- }
- read_unlock_irqrestore(&adapter->port_list_lock, flags);
+ port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
+ if (!port)
+ return -ENXIO;
- return unit;
-}
+ unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev));
+ if (unit)
+ put_device(&unit->dev);
-static int zfcp_scsi_slave_alloc(struct scsi_device *sdp)
-{
- struct zfcp_adapter *adapter;
- struct zfcp_unit *unit;
- u64 lun;
+ if (!unit && !(adapter->connection_features & FSF_FEATURE_NPIV_MODE)) {
+ put_device(&port->dev);
+ return -ENXIO;
+ }
- adapter = (struct zfcp_adapter *) sdp->host->hostdata[0];
- if (!adapter)
- goto out;
+ zfcp_sdev->port = port;
+ zfcp_sdev->latencies.write.channel.min = 0xFFFFFFFF;
+ zfcp_sdev->latencies.write.fabric.min = 0xFFFFFFFF;
+ zfcp_sdev->latencies.read.channel.min = 0xFFFFFFFF;
+ zfcp_sdev->latencies.read.fabric.min = 0xFFFFFFFF;
+ zfcp_sdev->latencies.cmd.channel.min = 0xFFFFFFFF;
+ zfcp_sdev->latencies.cmd.fabric.min = 0xFFFFFFFF;
+ spin_lock_init(&zfcp_sdev->latencies.lock);
- int_to_scsilun(sdp->lun, (struct scsi_lun *)&lun);
- unit = zfcp_unit_lookup(adapter, sdp->id, lun);
- if (unit) {
- sdp->hostdata = unit;
- unit->device = sdp;
- return 0;
- }
-out:
- return -ENXIO;
+ zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
+ zfcp_erp_lun_reopen(sdev, 0, "scsla_1", NULL);
+ zfcp_erp_wait(port->adapter);
+
+ return 0;
}
static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
@@ -179,7 +170,6 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
struct Scsi_Host *scsi_host = scpnt->device->host;
struct zfcp_adapter *adapter =
(struct zfcp_adapter *) scsi_host->hostdata[0];
- struct zfcp_unit *unit = scpnt->device->hostdata;
struct zfcp_fsf_req *old_req, *abrt_req;
unsigned long flags;
unsigned long old_reqid = (unsigned long) scpnt->host_scribble;
@@ -203,7 +193,7 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
write_unlock_irqrestore(&adapter->abort_lock, flags);
while (retry--) {
- abrt_req = zfcp_fsf_abort_fcp_command(old_reqid, unit);
+ abrt_req = zfcp_fsf_abort_fcp_cmnd(scpnt);
if (abrt_req)
break;
@@ -238,14 +228,14 @@ static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
{
- struct zfcp_unit *unit = scpnt->device->hostdata;
- struct zfcp_adapter *adapter = unit->port->adapter;
+ struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
+ struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
struct zfcp_fsf_req *fsf_req = NULL;
int retval = SUCCESS, ret;
int retry = 3;
while (retry--) {
- fsf_req = zfcp_fsf_send_fcp_ctm(unit, tm_flags);
+ fsf_req = zfcp_fsf_fcp_task_mgmt(scpnt, tm_flags);
if (fsf_req)
break;
@@ -256,7 +246,7 @@ static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_RUNNING)) {
- zfcp_dbf_scsi_devreset("nres", tm_flags, unit, scpnt);
+ zfcp_dbf_scsi_devreset("nres", scpnt, tm_flags);
return SUCCESS;
}
}
@@ -266,10 +256,10 @@ static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
wait_for_completion(&fsf_req->completion);
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
- zfcp_dbf_scsi_devreset("fail", tm_flags, unit, scpnt);
+ zfcp_dbf_scsi_devreset("fail", scpnt, tm_flags);
retval = FAILED;
} else
- zfcp_dbf_scsi_devreset("okay", tm_flags, unit, scpnt);
+ zfcp_dbf_scsi_devreset("okay", scpnt, tm_flags);
zfcp_fsf_req_free(fsf_req);
return retval;
@@ -287,8 +277,8 @@ static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
- struct zfcp_unit *unit = scpnt->device->hostdata;
- struct zfcp_adapter *adapter = unit->port->adapter;
+ struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
+ struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
int ret;
zfcp_erp_adapter_reopen(adapter, 0, "schrh_1", scpnt);
@@ -319,8 +309,8 @@ int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter)
}
/* tell the SCSI stack some characteristics of this adapter */
- adapter->scsi_host->max_id = 1;
- adapter->scsi_host->max_lun = 1;
+ adapter->scsi_host->max_id = 511;
+ adapter->scsi_host->max_lun = 0xFFFFFFFF;
adapter->scsi_host->max_channel = 0;
adapter->scsi_host->unique_id = dev_id.devno;
adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
@@ -534,20 +524,6 @@ static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
}
}
-static void zfcp_scsi_queue_unit_register(struct zfcp_port *port)
-{
- struct zfcp_unit *unit;
-
- read_lock_irq(&port->unit_list_lock);
- list_for_each_entry(unit, &port->unit_list, list) {
- get_device(&unit->dev);
- if (scsi_queue_work(port->adapter->scsi_host,
- &unit->scsi_work) <= 0)
- put_device(&unit->dev);
- }
- read_unlock_irq(&port->unit_list_lock);
-}
-
static void zfcp_scsi_rport_register(struct zfcp_port *port)
{
struct fc_rport_identifiers ids;
@@ -574,7 +550,7 @@ static void zfcp_scsi_rport_register(struct zfcp_port *port)
port->rport = rport;
port->starget_id = rport->scsi_target_id;
- zfcp_scsi_queue_unit_register(port);
+ zfcp_unit_queue_scsi_scan(port);
}
static void zfcp_scsi_rport_block(struct zfcp_port *port)
@@ -638,29 +614,6 @@ void zfcp_scsi_rport_work(struct work_struct *work)
}
/**
- * zfcp_scsi_scan - Register LUN with SCSI midlayer
- * @unit: The LUN/unit to register
- */
-void zfcp_scsi_scan(struct zfcp_unit *unit)
-{
- struct fc_rport *rport = unit->port->rport;
-
- if (rport && rport->port_state == FC_PORTSTATE_ONLINE)
- scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
- scsilun_to_int((struct scsi_lun *)
- &unit->fcp_lun), 0);
-}
-
-void zfcp_scsi_scan_work(struct work_struct *work)
-{
- struct zfcp_unit *unit = container_of(work, struct zfcp_unit,
- scsi_work);
-
- zfcp_scsi_scan(unit);
- put_device(&unit->dev);
-}
-
-/**
* zfcp_scsi_set_prot - Configure DIF/DIX support in scsi_host
* @adapter: The adapter where to configure DIF/DIX for the SCSI host
*/
@@ -735,7 +688,6 @@ struct fc_function_template zfcp_transport_functions = {
.show_host_port_type = 1,
.show_host_speed = 1,
.show_host_port_id = 1,
- .disable_target_scan = 1,
.dd_bsg_size = sizeof(struct zfcp_fsf_ct_els),
};
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