3  * Aic94xx Task Management Functions
214 static int asd_clear_nexus_tag(struct sas_task *task)  in asd_clear_nexus_tag()  argument
216 	struct asd_ha_struct *asd_ha = task->dev->port->ha->lldd_ha;  in asd_clear_nexus_tag()
217 	struct asd_ascb *tascb = task->lldd_task;  in asd_clear_nexus_tag()
221 	memcpy(scb->clear_nexus.ssp_task.lun, task->ssp_task.LUN, 8);  in asd_clear_nexus_tag()
223 	if (task->dev->tproto)  in asd_clear_nexus_tag()
225 							  task->dev->lldd_dev);  in asd_clear_nexus_tag()
229 static int asd_clear_nexus_index(struct sas_task *task)  in asd_clear_nexus_index()  argument
231 	struct asd_ha_struct *asd_ha = task->dev->port->ha->lldd_ha;  in asd_clear_nexus_index()
232 	struct asd_ascb *tascb = task->lldd_task;  in asd_clear_nexus_index()
236 	if (task->dev->tproto)  in asd_clear_nexus_index()
238 							  task->dev->lldd_dev);  in asd_clear_nexus_index()
324 static int asd_clear_nexus(struct sas_task *task)  in asd_clear_nexus()  argument
328 	struct asd_ascb *tascb = task->lldd_task;  in asd_clear_nexus()
334 	ASD_DPRINTK("task not done, clearing nexus\n");  in asd_clear_nexus()
336 		res = asd_clear_nexus_tag(task);  in asd_clear_nexus()
338 		res = asd_clear_nexus_index(task);  in asd_clear_nexus()
343 	spin_lock_irqsave(&task->task_state_lock, flags);  in asd_clear_nexus()
346 	if (task->task_state_flags & SAS_TASK_STATE_DONE)  in asd_clear_nexus()
348 	spin_unlock_irqrestore(&task->task_state_lock, flags);  in asd_clear_nexus()
354  * asd_abort_task -- ABORT TASK TMF
355  * @task: the task to be aborted
357  * Before calling ABORT TASK the task state flags should be ORed with
359  * the task_state_lock IRQ spinlock, then ABORT TASK *must* be called.
361  * Implements the ABORT TASK TMF, I_T_L_Q nexus.
366  * When ABORT TASK returns, the caller of ABORT TASK checks first the
367  * task->task_state_flags, and then the return value of ABORT TASK.
369  * If the task has task state bit SAS_TASK_STATE_DONE set, then the
370  * task was completed successfully prior to it being aborted.  The
371  * caller of ABORT TASK has responsibility to call task->task_done()
372  * xor free the task, depending on their framework.  The return code
377  * 		the task was aborted successfully.  The caller of
378  * 		ABORT TASK has responsibility to call task->task_done()
379  *              to finish the task, xor free the task depending on their
382  * 		the ABORT TASK returned some kind of error. The task
384  *		The caller of ABORT TASK may wish to retry.
386 int asd_abort_task(struct sas_task *task)  in asd_abort_task()  argument
388 	struct asd_ascb *tascb = task->lldd_task;  in asd_abort_task()
401 	spin_lock_irqsave(&task->task_state_lock, flags);  in asd_abort_task()
402 	if (task->task_state_flags & SAS_TASK_STATE_DONE) {  in asd_abort_task()
403 		spin_unlock_irqrestore(&task->task_state_lock, flags);  in asd_abort_task()
405 		ASD_DPRINTK("%s: task 0x%p done\n", __func__, task);  in asd_abort_task()
408 	spin_unlock_irqrestore(&task->task_state_lock, flags);  in asd_abort_task()
419 	switch (task->task_proto) {  in asd_abort_task()
426 		scb->abort_task.proto_conn_rate |= task->dev->linkrate;  in asd_abort_task()
434 	if (task->task_proto == SAS_PROTOCOL_SSP) {  in asd_abort_task()
437 		       task->dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);  in asd_abort_task()
439 		       task->dev->port->ha->hashed_sas_addr,  in asd_abort_task()
443 		memcpy(scb->abort_task.ssp_task.lun, task->ssp_task.LUN, 8);  in asd_abort_task()
450 		(u16)(unsigned long)task->dev->lldd_dev);  in asd_abort_task()
465 	spin_lock_irqsave(&task->task_state_lock, flags);  in asd_abort_task()
466 	if (task->task_state_flags & SAS_TASK_STATE_DONE) {  in asd_abort_task()
467 		spin_unlock_irqrestore(&task->task_state_lock, flags);  in asd_abort_task()
469 		ASD_DPRINTK("%s: task 0x%p done\n", __func__, task);  in asd_abort_task()
472 	spin_unlock_irqrestore(&task->task_state_lock, flags);  in asd_abort_task()
475 		/* The task to be aborted has been sent to the device.  in asd_abort_task()
476 		 * We got a Response IU for the ABORT TASK TMF. */  in asd_abort_task()
478 			res = asd_clear_nexus(task);  in asd_abort_task()
488 		 * TASK.  in asd_abort_task()
492 			res = asd_clear_nexus(task);  in asd_abort_task()
496 			/* The task hasn't been sent to the device xor  in asd_abort_task()
498 			 * ABORT TASK TMF.  in asd_abort_task()
508 			spin_lock_irqsave(&task->task_state_lock, flags);  in asd_abort_task()
511 			if (task->task_state_flags & SAS_TASK_STATE_DONE)  in asd_abort_task()
513 			spin_unlock_irqrestore(&task->task_state_lock, flags);  in asd_abort_task()
528 		task->lldd_task = NULL;  in asd_abort_task()
532 	ASD_DPRINTK("task 0x%p aborted, res: 0x%x\n", task, res);  in asd_abort_task()
537 	ASD_DPRINTK("task 0x%p aborted, res: 0x%x\n", task, res);  in asd_abort_task()
546  * @index: the transaction context of the task to be queried if QT TMF
548  * This function is used to send ABORT TASK SET, CLEAR ACA,
549  * CLEAR TASK SET, LU RESET and QUERY TASK TMFs.
591 	/* SSP Task IU */  in asd_initiate_ssp_tmf()
666  * asd_query_task -- send a QUERY TASK TMF to an I_T_L_Q nexus
667  * @task: pointer to sas_task struct of interest
669  * Returns: TMF_RESP_FUNC_COMPLETE if the task is not in the task set,
670  * or TMF_RESP_FUNC_SUCC if the task is in the task set.
672  * Normally the management layer sets the task to aborted state,
673  * and then calls query task and then abort task.
675 int asd_query_task(struct sas_task *task)  in asd_query_task()  argument
677 	struct asd_ascb *ascb = task->lldd_task;  in asd_query_task()
682 		return asd_initiate_ssp_tmf(task->dev, task->ssp_task.LUN,  in asd_query_task()