36 /* record final status and free the task */
37 static void sas_end_task(struct scsi_cmnd *sc, struct sas_task *task)  in sas_end_task()  argument
39 	struct task_status_struct *ts = &task->task_status;  in sas_end_task()
46 		/* task delivered, what happened afterwards? */  in sas_end_task()
79 			pr_notice("LLDD:%s sent SAS_PROTO_RESP for an SSP task; please report this\n",  in sas_end_task()
80 				  task->dev->port->ha->sas_ha_name);  in sas_end_task()
98 	sas_free_task(task);  in sas_end_task()
101 static void sas_scsi_task_done(struct sas_task *task)  in sas_scsi_task_done()  argument
103 	struct scsi_cmnd *sc = task->uldd_task;  in sas_scsi_task_done()
104 	struct domain_device *dev = task->dev;  in sas_scsi_task_done()
110 		task = NULL;  in sas_scsi_task_done()
115 	if (unlikely(!task)) {  in sas_scsi_task_done()
116 		/* task will be completed by the error handler */  in sas_scsi_task_done()
117 		pr_debug("task done but aborted\n");  in sas_scsi_task_done()
123 		sas_free_task(task);  in sas_scsi_task_done()
127 	sas_end_task(sc, task);  in sas_scsi_task_done()
135 	struct sas_task *task = sas_alloc_task(gfp_flags);  in sas_create_task()  local
138 	if (!task)  in sas_create_task()
141 	task->uldd_task = cmd;  in sas_create_task()
142 	ASSIGN_SAS_TASK(cmd, task);  in sas_create_task()
144 	task->dev = dev;  in sas_create_task()
145 	task->task_proto = task->dev->tproto; /* BUG_ON(!SSP) */  in sas_create_task()
147 	task->ssp_task.retry_count = 1;  in sas_create_task()
149 	memcpy(task->ssp_task.LUN, &lun.scsi_lun, 8);  in sas_create_task()
150 	task->ssp_task.task_attr = TASK_ATTR_SIMPLE;  in sas_create_task()
151 	task->ssp_task.cmd = cmd;  in sas_create_task()
153 	task->scatter = scsi_sglist(cmd);  in sas_create_task()
154 	task->num_scatter = scsi_sg_count(cmd);  in sas_create_task()
155 	task->total_xfer_len = scsi_bufflen(cmd);  in sas_create_task()
156 	task->data_dir = cmd->sc_data_direction;  in sas_create_task()
158 	task->task_done = sas_scsi_task_done;  in sas_create_task()
160 	return task;  in sas_create_task()
167 	struct sas_task *task;  in sas_queuecommand()  local
183 	task = sas_create_task(cmd, dev, GFP_ATOMIC);  in sas_queuecommand()
184 	if (!task)  in sas_queuecommand()
187 	res = i->dft->lldd_execute_task(task, GFP_ATOMIC);  in sas_queuecommand()
195 	sas_free_task(task);  in sas_queuecommand()
209 	struct sas_task *task = TO_SAS_TASK(cmd);  in sas_eh_finish_cmd()  local
212 	 * of the task, so we should be guaranteed not to be racing with  in sas_eh_finish_cmd()
213 	 * any completions from the LLD.  Task is freed after this.  in sas_eh_finish_cmd()
215 	sas_end_task(cmd, task);  in sas_eh_finish_cmd()
278 static enum task_disposition sas_scsi_find_task(struct sas_task *task)  in sas_scsi_find_task()  argument
283 		to_sas_internal(task->dev->port->ha->core.shost->transportt);  in sas_scsi_find_task()
286 		pr_notice("%s: aborting task 0x%p\n", __func__, task);  in sas_scsi_find_task()
287 		res = si->dft->lldd_abort_task(task);  in sas_scsi_find_task()
289 		spin_lock_irqsave(&task->task_state_lock, flags);  in sas_scsi_find_task()
290 		if (task->task_state_flags & SAS_TASK_STATE_DONE) {  in sas_scsi_find_task()
291 			spin_unlock_irqrestore(&task->task_state_lock, flags);  in sas_scsi_find_task()
292 			pr_debug("%s: task 0x%p is done\n", __func__, task);  in sas_scsi_find_task()
295 		spin_unlock_irqrestore(&task->task_state_lock, flags);  in sas_scsi_find_task()
298 			pr_notice("%s: task 0x%p is aborted\n",  in sas_scsi_find_task()
299 				  __func__, task);  in sas_scsi_find_task()
302 			pr_notice("%s: querying task 0x%p\n", __func__, task);  in sas_scsi_find_task()
303 			res = si->dft->lldd_query_task(task);  in sas_scsi_find_task()
306 				pr_notice("%s: task 0x%p at LU\n", __func__,  in sas_scsi_find_task()
307 					  task);  in sas_scsi_find_task()
310 				pr_notice("%s: task 0x%p not at LU\n",  in sas_scsi_find_task()
311 					  __func__, task);  in sas_scsi_find_task()
314 				pr_notice("%s: task 0x%p failed to abort\n",  in sas_scsi_find_task()
315 					  __func__, task);  in sas_scsi_find_task()
333 	pr_notice("eh: device %016llx LUN 0x%llx has the task\n",  in sas_recover_lu()
463 	struct sas_task *task = TO_SAS_TASK(cmd);  in sas_eh_abort_handler()  local
480 	if (task)  in sas_eh_abort_handler()
481 		res = i->dft->lldd_abort_task(task);  in sas_eh_abort_handler()
483 		pr_notice("no task to abort\n");  in sas_eh_abort_handler()
569 		struct sas_task *task;  in sas_eh_handle_sas_errors()  local
573 		 * SAS_HA_FROZEN and is leaving the task alone, or has  in sas_eh_handle_sas_errors()
576 		task = TO_SAS_TASK(cmd);  in sas_eh_handle_sas_errors()
579 		if (!task)  in sas_eh_handle_sas_errors()
585 		struct sas_task *task = TO_SAS_TASK(cmd);  in sas_eh_handle_sas_errors()  local
589 		spin_lock_irqsave(&task->task_state_lock, flags);  in sas_eh_handle_sas_errors()
590 		need_reset = task->task_state_flags & SAS_TASK_NEED_DEV_RESET;  in sas_eh_handle_sas_errors()
591 		spin_unlock_irqrestore(&task->task_state_lock, flags);  in sas_eh_handle_sas_errors()
594 			pr_notice("%s: task 0x%p requests reset\n",  in sas_eh_handle_sas_errors()
595 				  __func__, task);  in sas_eh_handle_sas_errors()
599 		pr_debug("trying to find task 0x%p\n", task);  in sas_eh_handle_sas_errors()
600 		res = sas_scsi_find_task(task);  in sas_eh_handle_sas_errors()
604 			pr_notice("%s: task 0x%p is done\n", __func__,  in sas_eh_handle_sas_errors()
605 				    task);  in sas_eh_handle_sas_errors()
609 			pr_notice("%s: task 0x%p is aborted\n",  in sas_eh_handle_sas_errors()
610 				  __func__, task);  in sas_eh_handle_sas_errors()
614 			pr_info("task 0x%p is at LU: lu recover\n", task);  in sas_eh_handle_sas_errors()
616 			tmf_resp = sas_recover_lu(task->dev, cmd);  in sas_eh_handle_sas_errors()
619 					  SAS_ADDR(task->dev),  in sas_eh_handle_sas_errors()
628 			pr_notice("task 0x%p is not at LU: I_T recover\n",  in sas_eh_handle_sas_errors()
629 				  task);  in sas_eh_handle_sas_errors()
630 			tmf_resp = sas_recover_I_T(task->dev);  in sas_eh_handle_sas_errors()
633 				struct domain_device *dev = task->dev;  in sas_eh_handle_sas_errors()
635 					  SAS_ADDR(task->dev->sas_addr));  in sas_eh_handle_sas_errors()
643 				struct asd_sas_port *port = task->dev->port;  in sas_eh_handle_sas_errors()
670 			       SAS_ADDR(task->dev->sas_addr),  in sas_eh_handle_sas_errors()
889  * Tell an upper layer that it needs to initiate an abort for a given task.
892 void sas_task_abort(struct sas_task *task)  in sas_task_abort()  argument
894 	struct scsi_cmnd *sc = task->uldd_task;  in sas_task_abort()
898 		struct sas_task_slow *slow = task->slow_task;  in sas_task_abort()
908 	if (dev_is_sata(task->dev))  in sas_task_abort()
909 		sas_ata_task_abort(task);  in sas_task_abort()