*
* Interface to Linux SCSI midlayer.
*
- * Copyright IBM Corporation 2002, 2008
+ * Copyright IBM Corporation 2002, 2009
*/
#define KMSG_COMPONENT "zfcp"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
-#include "zfcp_ext.h"
#include <asm/atomic.h>
+#include "zfcp_ext.h"
+#include "zfcp_dbf.h"
+
+static unsigned int default_depth = 32;
+module_param_named(queue_depth, default_depth, uint, 0600);
+MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices");
/* Find start of Sense Information in FCP response unit*/
char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *fcp_rsp_iu)
return fcp_sns_info_ptr;
}
+static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth)
+{
+ scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
+ return sdev->queue_depth;
+}
+
static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
{
struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
unit->device = NULL;
- zfcp_erp_unit_failed(unit, 12, NULL);
zfcp_unit_put(unit);
}
static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
{
if (sdp->tagged_supported)
- scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, 32);
+ scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, default_depth);
else
scsi_adjust_queue_depth(sdp, 0, 1);
return 0;
static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
{
+ struct zfcp_adapter *adapter =
+ (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
set_host_byte(scpnt, result);
if ((scpnt->device != NULL) && (scpnt->device->host != NULL))
- zfcp_scsi_dbf_event_result("fail", 4,
- (struct zfcp_adapter*) scpnt->device->host->hostdata[0],
- scpnt, NULL);
+ zfcp_dbf_scsi_result("fail", 4, adapter->dbf, scpnt, NULL);
/* return directly */
scpnt->scsi_done(scpnt);
}
{
struct zfcp_unit *unit;
struct zfcp_adapter *adapter;
- int status;
- int ret;
+ int status, scsi_result, ret;
+ struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
/* reset the status for this request */
scpnt->result = 0;
return 0;
}
+ scsi_result = fc_remote_port_chkready(rport);
+ if (unlikely(scsi_result)) {
+ scpnt->result = scsi_result;
+ zfcp_dbf_scsi_result("fail", 4, adapter->dbf, scpnt, NULL);
+ scpnt->scsi_done(scpnt);
+ return 0;
+ }
+
status = atomic_read(&unit->status);
if (unlikely((status & ZFCP_STATUS_COMMON_ERP_FAILED) ||
!(status & ZFCP_STATUS_COMMON_RUNNING))) {
zfcp_scsi_command_fail(scpnt, DID_ERROR);
- return 0;;
+ return 0;
}
ret = zfcp_fsf_send_fcp_command_task(unit, scpnt);
struct zfcp_unit *unit = scpnt->device->hostdata;
struct zfcp_fsf_req *old_req, *abrt_req;
unsigned long flags;
- unsigned long old_req_id = (unsigned long) scpnt->host_scribble;
+ unsigned long old_reqid = (unsigned long) scpnt->host_scribble;
int retval = SUCCESS;
int retry = 3;
+ char *dbf_tag;
/* avoid race condition between late normal completion and abort */
write_lock_irqsave(&adapter->abort_lock, flags);
spin_lock(&adapter->req_list_lock);
- old_req = zfcp_reqlist_find(adapter, old_req_id);
+ old_req = zfcp_reqlist_find(adapter, old_reqid);
spin_unlock(&adapter->req_list_lock);
if (!old_req) {
write_unlock_irqrestore(&adapter->abort_lock, flags);
- zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL,
- old_req_id);
- return SUCCESS;
+ zfcp_dbf_scsi_abort("lte1", adapter->dbf, scpnt, NULL,
+ old_reqid);
+ return FAILED; /* completion could be in progress */
}
old_req->data = NULL;
write_unlock_irqrestore(&adapter->abort_lock, flags);
while (retry--) {
- abrt_req = zfcp_fsf_abort_fcp_command(old_req_id, unit);
+ abrt_req = zfcp_fsf_abort_fcp_command(old_reqid, unit);
if (abrt_req)
break;
zfcp_erp_wait(adapter);
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_RUNNING)) {
- zfcp_scsi_dbf_event_abort("nres", adapter, scpnt, NULL,
- old_req_id);
+ zfcp_dbf_scsi_abort("nres", adapter->dbf, scpnt, NULL,
+ old_reqid);
return SUCCESS;
}
}
if (!abrt_req)
return FAILED;
- wait_event(abrt_req->completion_wq,
- abrt_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
+ wait_for_completion(&abrt_req->completion);
if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED)
- zfcp_scsi_dbf_event_abort("okay", adapter, scpnt, abrt_req, 0);
+ dbf_tag = "okay";
else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED)
- zfcp_scsi_dbf_event_abort("lte2", adapter, scpnt, abrt_req, 0);
+ dbf_tag = "lte2";
else {
- zfcp_scsi_dbf_event_abort("fail", adapter, scpnt, abrt_req, 0);
+ dbf_tag = "fail";
retval = FAILED;
}
+ zfcp_dbf_scsi_abort(dbf_tag, adapter->dbf, scpnt, abrt_req, old_reqid);
zfcp_fsf_req_free(abrt_req);
return retval;
}
{
struct zfcp_unit *unit = scpnt->device->hostdata;
struct zfcp_adapter *adapter = unit->port->adapter;
- struct zfcp_fsf_req *fsf_req;
+ struct zfcp_fsf_req *fsf_req = NULL;
int retval = SUCCESS;
int retry = 3;
zfcp_erp_wait(adapter);
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_RUNNING)) {
- zfcp_scsi_dbf_event_devreset("nres", tm_flags, unit,
- scpnt);
+ zfcp_dbf_scsi_devreset("nres", tm_flags, unit, scpnt);
return SUCCESS;
}
}
if (!fsf_req)
return FAILED;
- wait_event(fsf_req->completion_wq,
- fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
+ wait_for_completion(&fsf_req->completion);
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
- zfcp_scsi_dbf_event_devreset("fail", tm_flags, unit, scpnt);
+ zfcp_dbf_scsi_devreset("fail", tm_flags, unit, scpnt);
retval = FAILED;
} else if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP) {
- zfcp_scsi_dbf_event_devreset("nsup", tm_flags, unit, scpnt);
+ zfcp_dbf_scsi_devreset("nsup", tm_flags, unit, scpnt);
retval = FAILED;
} else
- zfcp_scsi_dbf_event_devreset("okay", tm_flags, unit, scpnt);
+ zfcp_dbf_scsi_devreset("okay", tm_flags, unit, scpnt);
zfcp_fsf_req_free(fsf_req);
return retval;
struct zfcp_unit *unit = scpnt->device->hostdata;
struct zfcp_adapter *adapter = unit->port->adapter;
- zfcp_erp_adapter_reopen(adapter, 0, 141, scpnt);
+ zfcp_erp_adapter_reopen(adapter, 0, "schrh_1", scpnt);
zfcp_erp_wait(adapter);
return SUCCESS;
if (!data)
return NULL;
- ret = zfcp_fsf_exchange_port_data_sync(adapter, data);
+ ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
if (ret) {
kfree(data);
return NULL;
if (!data)
return;
- ret = zfcp_fsf_exchange_port_data_sync(adapter, data);
+ ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
if (ret)
kfree(data);
else {
rport->dev_loss_tmo = timeout;
}
+/**
+ * zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport
+ * @rport: The FC rport where to teminate I/O
+ *
+ * Abort all pending SCSI commands for a port by closing the
+ * port. Using a reopen for avoids a conflict with a shutdown
+ * overwriting a reopen.
+ */
+static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
+{
+ struct zfcp_port *port;
+ struct Scsi_Host *shost = rport_to_shost(rport);
+ struct zfcp_adapter *adapter =
+ (struct zfcp_adapter *)shost->hostdata[0];
+
+ write_lock_irq(&zfcp_data.config_lock);
+ port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
+ if (port)
+ zfcp_port_get(port);
+ write_unlock_irq(&zfcp_data.config_lock);
+
+ if (port) {
+ zfcp_erp_port_reopen(port, 0, "sctrpi1", NULL);
+ zfcp_port_put(port);
+ }
+}
+
+static void zfcp_scsi_rport_register(struct zfcp_port *port)
+{
+ struct fc_rport_identifiers ids;
+ struct fc_rport *rport;
+
+ if (port->rport)
+ return;
+
+ ids.node_name = port->wwnn;
+ ids.port_name = port->wwpn;
+ ids.port_id = port->d_id;
+ ids.roles = FC_RPORT_ROLE_FCP_TARGET;
+
+ rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
+ if (!rport) {
+ dev_err(&port->adapter->ccw_device->dev,
+ "Registering port 0x%016Lx failed\n",
+ (unsigned long long)port->wwpn);
+ return;
+ }
+
+ rport->maxframe_size = port->maxframe_size;
+ rport->supported_classes = port->supported_classes;
+ port->rport = rport;
+}
+
+static void zfcp_scsi_rport_block(struct zfcp_port *port)
+{
+ struct fc_rport *rport = port->rport;
+
+ if (rport) {
+ fc_remote_port_delete(rport);
+ port->rport = NULL;
+ }
+}
+
+void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
+{
+ zfcp_port_get(port);
+ port->rport_task = RPORT_ADD;
+
+ if (!queue_work(port->adapter->work_queue, &port->rport_work))
+ zfcp_port_put(port);
+}
+
+void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
+{
+ zfcp_port_get(port);
+ port->rport_task = RPORT_DEL;
+
+ if (port->rport && queue_work(port->adapter->work_queue,
+ &port->rport_work))
+ return;
+
+ zfcp_port_put(port);
+}
+
+void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
+{
+ struct zfcp_port *port;
+
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ zfcp_scsi_schedule_rport_block(port);
+}
+
+void zfcp_scsi_rport_work(struct work_struct *work)
+{
+ struct zfcp_port *port = container_of(work, struct zfcp_port,
+ rport_work);
+
+ while (port->rport_task) {
+ if (port->rport_task == RPORT_ADD) {
+ port->rport_task = RPORT_NONE;
+ zfcp_scsi_rport_register(port);
+ } else {
+ port->rport_task = RPORT_NONE;
+ zfcp_scsi_rport_block(port);
+ }
+ }
+
+ zfcp_port_put(port);
+}
+
+
+void zfcp_scsi_scan(struct work_struct *work)
+{
+ struct zfcp_unit *unit = container_of(work, struct zfcp_unit,
+ scsi_work);
+ struct fc_rport *rport;
+
+ flush_work(&unit->port->rport_work);
+ 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);
+
+ zfcp_unit_put(unit);
+}
+
+static int zfcp_execute_fc_job(struct fc_bsg_job *job)
+{
+ switch (job->request->msgcode) {
+ case FC_BSG_RPT_ELS:
+ case FC_BSG_HST_ELS_NOLOGIN:
+ return zfcp_fc_execute_els_fc_job(job);
+ case FC_BSG_RPT_CT:
+ case FC_BSG_HST_CT:
+ return zfcp_fc_execute_ct_fc_job(job);
+ default:
+ return -EINVAL;
+ }
+}
+
struct fc_function_template zfcp_transport_functions = {
.show_starget_port_id = 1,
.show_starget_port_name = 1,
.reset_fc_host_stats = zfcp_reset_fc_host_stats,
.set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
.get_host_port_state = zfcp_get_host_port_state,
+ .terminate_rport_io = zfcp_scsi_terminate_rport_io,
.show_host_port_state = 1,
+ .bsg_request = zfcp_execute_fc_job,
/* no functions registered for following dynamic attributes but
directly set by LLDD */
.show_host_port_type = 1,
.name = "zfcp",
.module = THIS_MODULE,
.proc_name = "zfcp",
+ .change_queue_depth = zfcp_scsi_change_queue_depth,
.slave_alloc = zfcp_scsi_slave_alloc,
.slave_configure = zfcp_scsi_slave_configure,
.slave_destroy = zfcp_scsi_slave_destroy,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff