void (*done) (struct scsi_cmnd *));
static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *);
static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *);
-static int zfcp_scsi_eh_bus_reset_handler(struct scsi_cmnd *);
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *);
static int zfcp_task_management_function(struct zfcp_unit *, u8,
struct scsi_cmnd *);
static struct device_attribute *zfcp_sysfs_sdev_attrs[];
-struct scsi_transport_template *zfcp_transport_template;
-
struct zfcp_data zfcp_data = {
.scsi_host_template = {
- name: ZFCP_NAME,
- proc_name: "zfcp",
- proc_info: NULL,
- detect: NULL,
- slave_alloc: zfcp_scsi_slave_alloc,
- slave_configure: zfcp_scsi_slave_configure,
- slave_destroy: zfcp_scsi_slave_destroy,
- queuecommand: zfcp_scsi_queuecommand,
- eh_abort_handler: zfcp_scsi_eh_abort_handler,
- eh_device_reset_handler: zfcp_scsi_eh_device_reset_handler,
- eh_bus_reset_handler: zfcp_scsi_eh_bus_reset_handler,
- eh_host_reset_handler: zfcp_scsi_eh_host_reset_handler,
- /* FIXME(openfcp): Tune */
- can_queue: 4096,
- this_id: -1,
- /*
- * FIXME:
- * one less? can zfcp_create_sbale cope with it?
- */
- sg_tablesize: ZFCP_MAX_SBALES_PER_REQ,
- cmd_per_lun: 1,
- unchecked_isa_dma: 0,
- use_clustering: 1,
- sdev_attrs: zfcp_sysfs_sdev_attrs,
+ .name = ZFCP_NAME,
+ .module = THIS_MODULE,
+ .proc_name = "zfcp",
+ .slave_alloc = zfcp_scsi_slave_alloc,
+ .slave_configure = zfcp_scsi_slave_configure,
+ .slave_destroy = zfcp_scsi_slave_destroy,
+ .queuecommand = zfcp_scsi_queuecommand,
+ .eh_abort_handler = zfcp_scsi_eh_abort_handler,
+ .eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
+ .eh_bus_reset_handler = zfcp_scsi_eh_host_reset_handler,
+ .eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
+ .can_queue = 4096,
+ .this_id = -1,
+ .sg_tablesize = ZFCP_MAX_SBALES_PER_REQ,
+ .cmd_per_lun = 1,
+ .use_clustering = 1,
+ .sdev_attrs = zfcp_sysfs_sdev_attrs,
},
.driver_version = ZFCP_VERSION,
- /* rest initialised with zeros */
};
/* Find start of Response Information in FCP response unit*/
return retval;
}
-static void
-zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
+/**
+ * zfcp_scsi_slave_destroy - called when scsi device is removed
+ *
+ * Remove reference to associated scsi device for an zfcp_unit.
+ * Mark zfcp_unit as failed. The scsi device might be deleted via sysfs
+ * or a scan for this device might have failed.
+ */
+static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
{
struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
atomic_clear_mask(ZFCP_STATUS_UNIT_REGISTERED, &unit->status);
sdpnt->hostdata = NULL;
unit->device = NULL;
+ zfcp_erp_unit_failed(unit);
zfcp_unit_put(unit);
} else {
ZFCP_LOG_NORMAL("bug: no unit associated with SCSI device at "
*/
int
zfcp_scsi_command_async(struct zfcp_adapter *adapter, struct zfcp_unit *unit,
- struct scsi_cmnd *scpnt, struct timer_list *timer)
+ struct scsi_cmnd *scpnt, int use_timer)
{
int tmp;
int retval;
goto out;
}
- tmp = zfcp_fsf_send_fcp_command_task(adapter, unit, scpnt, timer,
+ tmp = zfcp_fsf_send_fcp_command_task(adapter, unit, scpnt, use_timer,
ZFCP_REQ_AUTO_CLEANUP);
if (unlikely(tmp < 0)) {
* zfcp_scsi_command_sync - send a SCSI command and wait for completion
* @unit: unit where command is sent to
* @scpnt: scsi command to be sent
- * @timer: timer to be started if request is successfully initiated
+ * @use_timer: indicates whether timer should be setup or not
* Return: 0
*
* Errors are indicated in scpnt->result
*/
int
zfcp_scsi_command_sync(struct zfcp_unit *unit, struct scsi_cmnd *scpnt,
- struct timer_list *timer)
+ int use_timer)
{
int ret;
DECLARE_COMPLETION(wait);
scpnt->SCp.ptr = (void *) &wait; /* silent re-use */
scpnt->scsi_done = zfcp_scsi_command_sync_handler;
- ret = zfcp_scsi_command_async(unit->port->adapter, unit, scpnt, timer);
+ ret = zfcp_scsi_command_async(unit->port->adapter, unit, scpnt,
+ use_timer);
if (ret == 0)
wait_for_completion(&wait);
adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
unit = (struct zfcp_unit *) scpnt->device->hostdata;
- return zfcp_scsi_command_async(adapter, unit, scpnt, NULL);
+ return zfcp_scsi_command_async(adapter, unit, scpnt, 0);
}
static struct zfcp_unit *
* will handle late commands. (Usually, the normal completion of late
* commands is ignored with respect to the running abort operation.)
*/
-int
-zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
+int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
{
struct Scsi_Host *scsi_host;
struct zfcp_adapter *adapter;
struct zfcp_unit *unit;
- int retval = SUCCESS;
- struct zfcp_fsf_req *new_fsf_req = NULL;
- struct zfcp_fsf_req *old_fsf_req;
+ struct zfcp_fsf_req *fsf_req;
unsigned long flags;
+ unsigned long old_req_id;
+ int retval = SUCCESS;
scsi_host = scpnt->device->host;
adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
/* avoid race condition between late normal completion and abort */
write_lock_irqsave(&adapter->abort_lock, flags);
- /*
- * Check whether command has just completed and can not be aborted.
- * Even if the command has just been completed late, we can access
- * scpnt since the SCSI stack does not release it at least until
- * this routine returns. (scpnt is parameter passed to this routine
- * and must not disappear during abort even on late completion.)
- */
- old_fsf_req = (struct zfcp_fsf_req *) scpnt->host_scribble;
- if (!old_fsf_req) {
+ /* Check whether corresponding fsf_req is still pending */
+ spin_lock(&adapter->req_list_lock);
+ fsf_req = zfcp_reqlist_ismember(adapter, (unsigned long)
+ scpnt->host_scribble);
+ spin_unlock(&adapter->req_list_lock);
+ if (!fsf_req) {
write_unlock_irqrestore(&adapter->abort_lock, flags);
- zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL, NULL);
+ zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL, 0);
retval = SUCCESS;
goto out;
}
- old_fsf_req->data = 0;
- old_fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTING;
+ fsf_req->data = 0;
+ fsf_req->status |= ZFCP_STATUS_FSFREQ_ABORTING;
+ old_req_id = fsf_req->req_id;
- /* don't access old_fsf_req after releasing the abort_lock */
+ /* don't access old fsf_req after releasing the abort_lock */
write_unlock_irqrestore(&adapter->abort_lock, flags);
- /* call FSF routine which does the abort */
- new_fsf_req = zfcp_fsf_abort_fcp_command((unsigned long) old_fsf_req,
- adapter, unit, 0);
- if (!new_fsf_req) {
+
+ fsf_req = zfcp_fsf_abort_fcp_command(old_req_id, adapter, unit, 0);
+ if (!fsf_req) {
ZFCP_LOG_INFO("error: initiation of Abort FCP Cmnd failed\n");
zfcp_scsi_dbf_event_abort("nres", adapter, scpnt, NULL,
- old_fsf_req);
+ old_req_id);
retval = FAILED;
goto out;
}
- /* wait for completion of abort */
- __wait_event(new_fsf_req->completion_wq,
- new_fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
+ __wait_event(fsf_req->completion_wq,
+ fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
- /* status should be valid since signals were not permitted */
- if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED) {
- zfcp_scsi_dbf_event_abort("okay", adapter, scpnt, new_fsf_req,
- NULL);
+ if (fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED) {
+ zfcp_scsi_dbf_event_abort("okay", adapter, scpnt, fsf_req, 0);
retval = SUCCESS;
- } else if (new_fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED) {
- zfcp_scsi_dbf_event_abort("lte2", adapter, scpnt, new_fsf_req,
- NULL);
+ } else if (fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED) {
+ zfcp_scsi_dbf_event_abort("lte2", adapter, scpnt, fsf_req, 0);
retval = SUCCESS;
} else {
- zfcp_scsi_dbf_event_abort("fail", adapter, scpnt, new_fsf_req,
- NULL);
+ zfcp_scsi_dbf_event_abort("fail", adapter, scpnt, fsf_req, 0);
retval = FAILED;
}
- zfcp_fsf_req_free(new_fsf_req);
+ zfcp_fsf_req_free(fsf_req);
out:
return retval;
}
}
/**
- * zfcp_scsi_eh_bus_reset_handler - reset bus (reopen adapter)
+ * zfcp_scsi_eh_host_reset_handler - handler for host and bus reset
*/
-int
-zfcp_scsi_eh_bus_reset_handler(struct scsi_cmnd *scpnt)
+int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
- struct zfcp_unit *unit = (struct zfcp_unit*) scpnt->device->hostdata;
- struct zfcp_adapter *adapter = unit->port->adapter;
-
- ZFCP_LOG_NORMAL("bus reset because of problems with "
- "unit 0x%016Lx\n", unit->fcp_lun);
- zfcp_erp_adapter_reopen(adapter, 0);
- zfcp_erp_wait(adapter);
-
- return SUCCESS;
-}
+ struct zfcp_unit *unit;
+ struct zfcp_adapter *adapter;
-/**
- * zfcp_scsi_eh_host_reset_handler - reset host (reopen adapter)
- */
-int
-zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
-{
- struct zfcp_unit *unit = (struct zfcp_unit*) scpnt->device->hostdata;
- struct zfcp_adapter *adapter = unit->port->adapter;
+ unit = (struct zfcp_unit*) scpnt->device->hostdata;
+ adapter = unit->port->adapter;
- ZFCP_LOG_NORMAL("host reset because of problems with "
+ ZFCP_LOG_NORMAL("host/bus reset because of problems with "
"unit 0x%016Lx\n", unit->fcp_lun);
+
zfcp_erp_adapter_reopen(adapter, 0);
zfcp_erp_wait(adapter);
adapter->scsi_host->max_channel = 0;
adapter->scsi_host->unique_id = unique_id++; /* FIXME */
adapter->scsi_host->max_cmd_len = ZFCP_MAX_SCSI_CMND_LENGTH;
- adapter->scsi_host->transportt = zfcp_transport_template;
+ adapter->scsi_host->transportt = zfcp_data.scsi_transport_template;
/*
* save a pointer to our own adapter data structure within
return;
}
-
-void
-zfcp_fsf_start_scsi_er_timer(struct zfcp_adapter *adapter)
-{
- adapter->scsi_er_timer.function = zfcp_fsf_scsi_er_timeout_handler;
- adapter->scsi_er_timer.data = (unsigned long) adapter;
- adapter->scsi_er_timer.expires = jiffies + ZFCP_SCSI_ER_TIMEOUT;
- add_timer(&adapter->scsi_er_timer);
-}
-
/*
* Support functions for FC transport class
*/
git.openpandora.org / pandora-kernel.git / blobdiff