}
}
-/**
- * _scsih_task_set_full - handle task set full
- * @ioc: per adapter object
- * @fw_event: The fw_event_work object
- * Context: user.
- *
- * Throttle back qdepth.
- */
-static void
-_scsih_task_set_full(struct MPT2SAS_ADAPTER *ioc, struct fw_event_work
- *fw_event)
-{
- unsigned long flags;
- struct _sas_device *sas_device;
- static struct _raid_device *raid_device;
- struct scsi_device *sdev;
- int depth;
- u16 current_depth;
- u16 handle;
- int id, channel;
- u64 sas_address;
- Mpi2EventDataTaskSetFull_t *event_data = fw_event->event_data;
-
- current_depth = le16_to_cpu(event_data->CurrentDepth);
- handle = le16_to_cpu(event_data->DevHandle);
- spin_lock_irqsave(&ioc->sas_device_lock, flags);
- sas_device = _scsih_sas_device_find_by_handle(ioc, handle);
- if (!sas_device) {
- spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
- return;
- }
- spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
- id = sas_device->id;
- channel = sas_device->channel;
- sas_address = sas_device->sas_address;
-
- /* if hidden raid component, then change to volume characteristics */
- if (test_bit(handle, ioc->pd_handles) && sas_device->volume_handle) {
- spin_lock_irqsave(&ioc->raid_device_lock, flags);
- raid_device = _scsih_raid_device_find_by_handle(
- ioc, sas_device->volume_handle);
- spin_unlock_irqrestore(&ioc->raid_device_lock, flags);
- if (raid_device) {
- id = raid_device->id;
- channel = raid_device->channel;
- handle = raid_device->handle;
- sas_address = raid_device->wwid;
- }
- }
-
- if (ioc->logging_level & MPT_DEBUG_TASK_SET_FULL)
- starget_printk(KERN_INFO, sas_device->starget, "task set "
- "full: handle(0x%04x), sas_addr(0x%016llx), depth(%d)\n",
- handle, (unsigned long long)sas_address, current_depth);
-
- shost_for_each_device(sdev, ioc->shost) {
- if (sdev->id == id && sdev->channel == channel) {
- if (current_depth > sdev->queue_depth) {
- if (ioc->logging_level &
- MPT_DEBUG_TASK_SET_FULL)
- sdev_printk(KERN_INFO, sdev, "strange "
- "observation, the queue depth is"
- " (%d) meanwhile fw queue depth "
- "is (%d)\n", sdev->queue_depth,
- current_depth);
- continue;
- }
- depth = scsi_track_queue_full(sdev,
- current_depth - 1);
- if (depth > 0)
- sdev_printk(KERN_INFO, sdev, "Queue depth "
- "reduced to (%d)\n", depth);
- else if (depth < 0)
- sdev_printk(KERN_INFO, sdev, "Tagged Command "
- "Queueing is being disabled\n");
- else if (depth == 0)
- if (ioc->logging_level &
- MPT_DEBUG_TASK_SET_FULL)
- sdev_printk(KERN_INFO, sdev,
- "Queue depth not changed yet\n");
- }
- }
-}
-
/**
* _scsih_prep_device_scan - initialize parameters prior to device scan
* @ioc: per adapter object
case MPI2_EVENT_IR_OPERATION_STATUS:
_scsih_sas_ir_operation_status_event(ioc, fw_event);
break;
- case MPI2_EVENT_TASK_SET_FULL:
- _scsih_task_set_full(ioc, fw_event);
- break;
}
_scsih_fw_event_free(ioc, fw_event);
}
case MPI2_EVENT_SAS_DISCOVERY:
case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
case MPI2_EVENT_IR_PHYSICAL_DISK:
- case MPI2_EVENT_TASK_SET_FULL:
break;
default: /* ignore the rest */