685 int ata_build_rw_tf(struct ata_queued_cmd *qc, u64 block, u32 n_block,  in ata_build_rw_tf()  argument
688 	struct ata_taskfile *tf = &qc->tf;  in ata_build_rw_tf()
689 	struct ata_device *dev = qc->dev;  in ata_build_rw_tf()
707 		tf->nsect = qc->hw_tag << 3;  in ata_build_rw_tf()
1441 static void ata_qc_complete_internal(struct ata_queued_cmd *qc)  in ata_qc_complete_internal()  argument
1443 	struct completion *waiting = qc->private_data;  in ata_qc_complete_internal()
1479 	struct ata_queued_cmd *qc;  in ata_exec_internal_sg()  local
1498 	qc = __ata_qc_from_tag(ap, ATA_TAG_INTERNAL);  in ata_exec_internal_sg()
1500 	qc->tag = ATA_TAG_INTERNAL;  in ata_exec_internal_sg()
1501 	qc->hw_tag = 0;  in ata_exec_internal_sg()
1502 	qc->scsicmd = NULL;  in ata_exec_internal_sg()
1503 	qc->ap = ap;  in ata_exec_internal_sg()
1504 	qc->dev = dev;  in ata_exec_internal_sg()
1505 	ata_qc_reinit(qc);  in ata_exec_internal_sg()
1517 	qc->tf = *tf;  in ata_exec_internal_sg()
1519 		memcpy(qc->cdb, cdb, ATAPI_CDB_LEN);  in ata_exec_internal_sg()
1524 		qc->tf.feature |= ATAPI_DMADIR;  in ata_exec_internal_sg()
1526 	qc->flags |= ATA_QCFLAG_RESULT_TF;  in ata_exec_internal_sg()
1527 	qc->dma_dir = dma_dir;  in ata_exec_internal_sg()
1535 		ata_sg_init(qc, sgl, n_elem);  in ata_exec_internal_sg()
1536 		qc->nbytes = buflen;  in ata_exec_internal_sg()
1539 	qc->private_data = &wait;  in ata_exec_internal_sg()
1540 	qc->complete_fn = ata_qc_complete_internal;  in ata_exec_internal_sg()
1542 	ata_qc_issue(qc);  in ata_exec_internal_sg()
1573 		if (qc->flags & ATA_QCFLAG_ACTIVE) {  in ata_exec_internal_sg()
1574 			qc->err_mask |= AC_ERR_TIMEOUT;  in ata_exec_internal_sg()
1579 				ata_qc_complete(qc);  in ata_exec_internal_sg()
1590 		ap->ops->post_internal_cmd(qc);  in ata_exec_internal_sg()
1593 	if (qc->flags & ATA_QCFLAG_FAILED) {  in ata_exec_internal_sg()
1594 		if (qc->result_tf.status & (ATA_ERR | ATA_DF))  in ata_exec_internal_sg()
1595 			qc->err_mask |= AC_ERR_DEV;  in ata_exec_internal_sg()
1597 		if (!qc->err_mask)  in ata_exec_internal_sg()
1598 			qc->err_mask |= AC_ERR_OTHER;  in ata_exec_internal_sg()
1600 		if (qc->err_mask & ~AC_ERR_OTHER)  in ata_exec_internal_sg()
1601 			qc->err_mask &= ~AC_ERR_OTHER;  in ata_exec_internal_sg()
1602 	} else if (qc->tf.command == ATA_CMD_REQ_SENSE_DATA) {  in ata_exec_internal_sg()
1603 		qc->result_tf.status |= ATA_SENSE;  in ata_exec_internal_sg()
1609 	*tf = qc->result_tf;  in ata_exec_internal_sg()
1610 	err_mask = qc->err_mask;  in ata_exec_internal_sg()
1612 	ata_qc_free(qc);  in ata_exec_internal_sg()
4424 int atapi_check_dma(struct ata_queued_cmd *qc)  in atapi_check_dma()  argument
4426 	struct ata_port *ap = qc->ap;  in atapi_check_dma()
4431 	if (!(qc->dev->horkage & ATA_HORKAGE_ATAPI_MOD16_DMA) &&  in atapi_check_dma()
4432 	    unlikely(qc->nbytes & 15))  in atapi_check_dma()
4436 		return ap->ops->check_atapi_dma(qc);  in atapi_check_dma()
4456 int ata_std_qc_defer(struct ata_queued_cmd *qc)  in ata_std_qc_defer()  argument
4458 	struct ata_link *link = qc->dev->link;  in ata_std_qc_defer()
4460 	if (ata_is_ncq(qc->tf.protocol)) {  in ata_std_qc_defer()
4472 enum ata_completion_errors ata_noop_qc_prep(struct ata_queued_cmd *qc)  in ata_noop_qc_prep()  argument
4491 void ata_sg_init(struct ata_queued_cmd *qc, struct scatterlist *sg,  in ata_sg_init()  argument
4494 	qc->sg = sg;  in ata_sg_init()
4495 	qc->n_elem = n_elem;  in ata_sg_init()
4496 	qc->cursg = qc->sg;  in ata_sg_init()
4510 static void ata_sg_clean(struct ata_queued_cmd *qc)  in ata_sg_clean()  argument
4512 	struct ata_port *ap = qc->ap;  in ata_sg_clean()
4513 	struct scatterlist *sg = qc->sg;  in ata_sg_clean()
4514 	int dir = qc->dma_dir;  in ata_sg_clean()
4518 	if (qc->n_elem)  in ata_sg_clean()
4519 		dma_unmap_sg(ap->dev, sg, qc->orig_n_elem, dir);  in ata_sg_clean()
4521 	qc->flags &= ~ATA_QCFLAG_DMAMAP;  in ata_sg_clean()
4522 	qc->sg = NULL;  in ata_sg_clean()
4538 static int ata_sg_setup(struct ata_queued_cmd *qc)  in ata_sg_setup()  argument
4540 	struct ata_port *ap = qc->ap;  in ata_sg_setup()
4543 	n_elem = dma_map_sg(ap->dev, qc->sg, qc->n_elem, qc->dma_dir);  in ata_sg_setup()
4547 	qc->orig_n_elem = qc->n_elem;  in ata_sg_setup()
4548 	qc->n_elem = n_elem;  in ata_sg_setup()
4549 	qc->flags |= ATA_QCFLAG_DMAMAP;  in ata_sg_setup()
4556 static inline void ata_sg_clean(struct ata_queued_cmd *qc) {}  in ata_sg_clean()  argument
4557 static inline int ata_sg_setup(struct ata_queued_cmd *qc) { return -1; }  in ata_sg_setup()  argument
4593 void ata_qc_free(struct ata_queued_cmd *qc)  in ata_qc_free()  argument
4595 	qc->flags = 0;  in ata_qc_free()
4596 	if (ata_tag_valid(qc->tag))  in ata_qc_free()
4597 		qc->tag = ATA_TAG_POISON;  in ata_qc_free()
4600 void __ata_qc_complete(struct ata_queued_cmd *qc)  in __ata_qc_complete()  argument
4605 	WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */  in __ata_qc_complete()
4606 	WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE));  in __ata_qc_complete()
4607 	ap = qc->ap;  in __ata_qc_complete()
4608 	link = qc->dev->link;  in __ata_qc_complete()
4610 	if (likely(qc->flags & ATA_QCFLAG_DMAMAP))  in __ata_qc_complete()
4611 		ata_sg_clean(qc);  in __ata_qc_complete()
4614 	if (ata_is_ncq(qc->tf.protocol)) {  in __ata_qc_complete()
4615 		link->sactive &= ~(1 << qc->hw_tag);  in __ata_qc_complete()
4624 	if (unlikely(qc->flags & ATA_QCFLAG_CLEAR_EXCL &&  in __ata_qc_complete()
4632 	qc->flags &= ~ATA_QCFLAG_ACTIVE;  in __ata_qc_complete()
4633 	ap->qc_active &= ~(1ULL << qc->tag);  in __ata_qc_complete()
4636 	qc->complete_fn(qc);  in __ata_qc_complete()
4639 static void fill_result_tf(struct ata_queued_cmd *qc)  in fill_result_tf()  argument
4641 	struct ata_port *ap = qc->ap;  in fill_result_tf()
4643 	qc->result_tf.flags = qc->tf.flags;  in fill_result_tf()
4644 	ap->ops->qc_fill_rtf(qc);  in fill_result_tf()
4647 static void ata_verify_xfer(struct ata_queued_cmd *qc)  in ata_verify_xfer()  argument
4649 	struct ata_device *dev = qc->dev;  in ata_verify_xfer()
4651 	if (!ata_is_data(qc->tf.protocol))  in ata_verify_xfer()
4654 	if ((dev->mwdma_mask || dev->udma_mask) && ata_is_pio(qc->tf.protocol))  in ata_verify_xfer()
4675 void ata_qc_complete(struct ata_queued_cmd *qc)  in ata_qc_complete()  argument
4677 	struct ata_port *ap = qc->ap;  in ata_qc_complete()
4680 	ledtrig_disk_activity(!!(qc->tf.flags & ATA_TFLAG_WRITE));  in ata_qc_complete()
4696 		struct ata_device *dev = qc->dev;  in ata_qc_complete()
4699 		if (unlikely(qc->err_mask))  in ata_qc_complete()
4700 			qc->flags |= ATA_QCFLAG_FAILED;  in ata_qc_complete()
4706 		if (unlikely(ata_tag_internal(qc->tag))) {  in ata_qc_complete()
4707 			fill_result_tf(qc);  in ata_qc_complete()
4708 			trace_ata_qc_complete_internal(qc);  in ata_qc_complete()
4709 			__ata_qc_complete(qc);  in ata_qc_complete()
4717 		if (unlikely(qc->flags & ATA_QCFLAG_FAILED)) {  in ata_qc_complete()
4718 			fill_result_tf(qc);  in ata_qc_complete()
4719 			trace_ata_qc_complete_failed(qc);  in ata_qc_complete()
4720 			ata_qc_schedule_eh(qc);  in ata_qc_complete()
4727 		if (qc->flags & ATA_QCFLAG_RESULT_TF)  in ata_qc_complete()
4728 			fill_result_tf(qc);  in ata_qc_complete()
4730 		trace_ata_qc_complete_done(qc);  in ata_qc_complete()
4734 		switch (qc->tf.command) {  in ata_qc_complete()
4736 			if (qc->tf.feature != SETFEATURES_WC_ON &&  in ata_qc_complete()
4737 			    qc->tf.feature != SETFEATURES_WC_OFF &&  in ata_qc_complete()
4738 			    qc->tf.feature != SETFEATURES_RA_ON &&  in ata_qc_complete()
4739 			    qc->tf.feature != SETFEATURES_RA_OFF)  in ata_qc_complete()
4755 			ata_verify_xfer(qc);  in ata_qc_complete()
4757 		__ata_qc_complete(qc);  in ata_qc_complete()
4759 		if (qc->flags & ATA_QCFLAG_EH_SCHEDULED)  in ata_qc_complete()
4763 		if (qc->err_mask || qc->flags & ATA_QCFLAG_RESULT_TF)  in ata_qc_complete()
4764 			fill_result_tf(qc);  in ata_qc_complete()
4766 		__ata_qc_complete(qc);  in ata_qc_complete()
4807 void ata_qc_issue(struct ata_queued_cmd *qc)  in ata_qc_issue()  argument
4809 	struct ata_port *ap = qc->ap;  in ata_qc_issue()
4810 	struct ata_link *link = qc->dev->link;  in ata_qc_issue()
4811 	u8 prot = qc->tf.protocol;  in ata_qc_issue()
4820 		WARN_ON_ONCE(link->sactive & (1 << qc->hw_tag));  in ata_qc_issue()
4824 		link->sactive |= 1 << qc->hw_tag;  in ata_qc_issue()
4829 		link->active_tag = qc->tag;  in ata_qc_issue()
4832 	qc->flags |= ATA_QCFLAG_ACTIVE;  in ata_qc_issue()
4833 	ap->qc_active |= 1ULL << qc->tag;  in ata_qc_issue()
4839 	if (ata_is_data(prot) && (!qc->sg || !qc->n_elem || !qc->nbytes))  in ata_qc_issue()
4844 		if (ata_sg_setup(qc))  in ata_qc_issue()
4848 	if (unlikely(qc->dev->flags & ATA_DFLAG_SLEEPING)) {  in ata_qc_issue()
4855 	trace_ata_qc_prep(qc);  in ata_qc_issue()
4856 	qc->err_mask |= ap->ops->qc_prep(qc);  in ata_qc_issue()
4857 	if (unlikely(qc->err_mask))  in ata_qc_issue()
4859 	trace_ata_qc_issue(qc);  in ata_qc_issue()
4860 	qc->err_mask |= ap->ops->qc_issue(qc);  in ata_qc_issue()
4861 	if (unlikely(qc->err_mask))  in ata_qc_issue()
4866 	qc->err_mask |= AC_ERR_SYSTEM;  in ata_qc_issue()
4868 	ata_qc_complete(qc);  in ata_qc_issue()
6482 static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc)  in ata_dummy_qc_issue()  argument