532 unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, unsigned char *buf,  in ata_sff_data_xfer()  argument
535 	struct ata_port *ap = qc->dev->link->ap;  in ata_sff_data_xfer()
587 unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, unsigned char *buf,  in ata_sff_data_xfer32()  argument
590 	struct ata_device *dev = qc->dev;  in ata_sff_data_xfer32()
597 		return ata_sff_data_xfer(qc, buf, buflen, rw);  in ata_sff_data_xfer32()
634 static void ata_pio_xfer(struct ata_queued_cmd *qc, struct page *page,  in ata_pio_xfer()  argument
637 	bool do_write = (qc->tf.flags & ATA_TFLAG_WRITE);  in ata_pio_xfer()
641 	qc->ap->ops->sff_data_xfer(qc, buf + offset, xfer_size, do_write);  in ata_pio_xfer()
657 static void ata_pio_sector(struct ata_queued_cmd *qc)  in ata_pio_sector()  argument
659 	struct ata_port *ap = qc->ap;  in ata_pio_sector()
663 	if (!qc->cursg) {  in ata_pio_sector()
664 		qc->curbytes = qc->nbytes;  in ata_pio_sector()
667 	if (qc->curbytes == qc->nbytes - qc->sect_size)  in ata_pio_sector()
670 	page = sg_page(qc->cursg);  in ata_pio_sector()
671 	offset = qc->cursg->offset + qc->cursg_ofs;  in ata_pio_sector()
677 	trace_ata_sff_pio_transfer_data(qc, offset, qc->sect_size);  in ata_pio_sector()
684 	if (offset + qc->sect_size > PAGE_SIZE) {  in ata_pio_sector()
687 		ata_pio_xfer(qc, page, offset, split_len);  in ata_pio_sector()
688 		ata_pio_xfer(qc, nth_page(page, 1), 0,  in ata_pio_sector()
689 			     qc->sect_size - split_len);  in ata_pio_sector()
691 		ata_pio_xfer(qc, page, offset, qc->sect_size);  in ata_pio_sector()
694 	qc->curbytes += qc->sect_size;  in ata_pio_sector()
695 	qc->cursg_ofs += qc->sect_size;  in ata_pio_sector()
697 	if (qc->cursg_ofs == qc->cursg->length) {  in ata_pio_sector()
698 		qc->cursg = sg_next(qc->cursg);  in ata_pio_sector()
699 		if (!qc->cursg)  in ata_pio_sector()
701 		qc->cursg_ofs = 0;  in ata_pio_sector()
715 static void ata_pio_sectors(struct ata_queued_cmd *qc)  in ata_pio_sectors()  argument
717 	if (is_multi_taskfile(&qc->tf)) {  in ata_pio_sectors()
721 		WARN_ON_ONCE(qc->dev->multi_count == 0);  in ata_pio_sectors()
723 		nsect = min((qc->nbytes - qc->curbytes) / qc->sect_size,  in ata_pio_sectors()
724 			    qc->dev->multi_count);  in ata_pio_sectors()
726 			ata_pio_sector(qc);  in ata_pio_sectors()
728 		ata_pio_sector(qc);  in ata_pio_sectors()
730 	ata_sff_sync(qc->ap); /* flush */  in ata_pio_sectors()
744 static void atapi_send_cdb(struct ata_port *ap, struct ata_queued_cmd *qc)  in atapi_send_cdb()  argument
747 	trace_atapi_send_cdb(qc, 0, qc->dev->cdb_len);  in atapi_send_cdb()
748 	WARN_ON_ONCE(qc->dev->cdb_len < 12);  in atapi_send_cdb()
750 	ap->ops->sff_data_xfer(qc, qc->cdb, qc->dev->cdb_len, 1);  in atapi_send_cdb()
754 	switch (qc->tf.protocol) {  in atapi_send_cdb()
765 		trace_ata_bmdma_start(ap, &qc->tf, qc->tag);  in atapi_send_cdb()
766 		ap->ops->bmdma_start(qc);  in atapi_send_cdb()
785 static int __atapi_pio_bytes(struct ata_queued_cmd *qc, unsigned int bytes)  in __atapi_pio_bytes()  argument
787 	int rw = (qc->tf.flags & ATA_TFLAG_WRITE) ? WRITE : READ;  in __atapi_pio_bytes()
788 	struct ata_port *ap = qc->ap;  in __atapi_pio_bytes()
789 	struct ata_device *dev = qc->dev;  in __atapi_pio_bytes()
797 	sg = qc->cursg;  in __atapi_pio_bytes()
801 				  qc->nbytes, qc->curbytes, bytes);  in __atapi_pio_bytes()
806 	offset = sg->offset + qc->cursg_ofs;  in __atapi_pio_bytes()
813 	count = min(sg->length - qc->cursg_ofs, bytes);  in __atapi_pio_bytes()
818 	trace_atapi_pio_transfer_data(qc, offset, count);  in __atapi_pio_bytes()
822 	consumed = ap->ops->sff_data_xfer(qc, buf + offset, count, rw);  in __atapi_pio_bytes()
826 	qc->curbytes += count;  in __atapi_pio_bytes()
827 	qc->cursg_ofs += count;  in __atapi_pio_bytes()
829 	if (qc->cursg_ofs == sg->length) {  in __atapi_pio_bytes()
830 		qc->cursg = sg_next(qc->cursg);  in __atapi_pio_bytes()
831 		qc->cursg_ofs = 0;  in __atapi_pio_bytes()
854 static void atapi_pio_bytes(struct ata_queued_cmd *qc)  in atapi_pio_bytes()  argument
856 	struct ata_port *ap = qc->ap;  in atapi_pio_bytes()
857 	struct ata_device *dev = qc->dev;  in atapi_pio_bytes()
860 	int i_write, do_write = (qc->tf.flags & ATA_TFLAG_WRITE) ? 1 : 0;  in atapi_pio_bytes()
868 	ap->ops->sff_tf_read(ap, &qc->result_tf);  in atapi_pio_bytes()
869 	ireason = qc->result_tf.nsect;  in atapi_pio_bytes()
870 	bc_lo = qc->result_tf.lbam;  in atapi_pio_bytes()
871 	bc_hi = qc->result_tf.lbah;  in atapi_pio_bytes()
886 	if (unlikely(__atapi_pio_bytes(qc, bytes)))  in atapi_pio_bytes()
896 	qc->err_mask |= AC_ERR_HSM;  in atapi_pio_bytes()
909 						struct ata_queued_cmd *qc)  in ata_hsm_ok_in_wq()  argument
911 	if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_hsm_ok_in_wq()
915 		if (qc->tf.protocol == ATA_PROT_PIO &&  in ata_hsm_ok_in_wq()
916 		   (qc->tf.flags & ATA_TFLAG_WRITE))  in ata_hsm_ok_in_wq()
919 		if (ata_is_atapi(qc->tf.protocol) &&  in ata_hsm_ok_in_wq()
920 		   !(qc->dev->flags & ATA_DFLAG_CDB_INTR))  in ata_hsm_ok_in_wq()
938 static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)  in ata_hsm_qc_complete()  argument
940 	struct ata_port *ap = qc->ap;  in ata_hsm_qc_complete()
947 			qc = ata_qc_from_tag(ap, qc->tag);  in ata_hsm_qc_complete()
948 			if (qc) {  in ata_hsm_qc_complete()
949 				if (likely(!(qc->err_mask & AC_ERR_HSM))) {  in ata_hsm_qc_complete()
951 					ata_qc_complete(qc);  in ata_hsm_qc_complete()
956 			if (likely(!(qc->err_mask & AC_ERR_HSM)))  in ata_hsm_qc_complete()
957 				ata_qc_complete(qc);  in ata_hsm_qc_complete()
964 			ata_qc_complete(qc);  in ata_hsm_qc_complete()
966 			ata_qc_complete(qc);  in ata_hsm_qc_complete()
980 int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,  in ata_sff_hsm_move()  argument
983 	struct ata_link *link = qc->dev->link;  in ata_sff_hsm_move()
989 	WARN_ON_ONCE((qc->flags & ATA_QCFLAG_ACTIVE) == 0);  in ata_sff_hsm_move()
995 	WARN_ON_ONCE(in_wq != ata_hsm_ok_in_wq(ap, qc));  in ata_sff_hsm_move()
998 	trace_ata_sff_hsm_state(qc, status);  in ata_sff_hsm_move()
1008 		poll_next = (qc->tf.flags & ATA_TFLAG_POLLING);  in ata_sff_hsm_move()
1015 				qc->err_mask |= AC_ERR_DEV;  in ata_sff_hsm_move()
1020 				qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1039 			if (!(qc->dev->horkage & ATA_HORKAGE_STUCK_ERR)) {  in ata_sff_hsm_move()
1043 				qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1049 		if (qc->tf.protocol == ATA_PROT_PIO) {  in ata_sff_hsm_move()
1059 			ata_pio_sectors(qc);  in ata_sff_hsm_move()
1062 			atapi_send_cdb(ap, qc);  in ata_sff_hsm_move()
1071 		if (qc->tf.protocol == ATAPI_PROT_PIO) {  in ata_sff_hsm_move()
1091 				qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1096 			atapi_pio_bytes(qc);  in ata_sff_hsm_move()
1108 					qc->err_mask |= AC_ERR_DEV;  in ata_sff_hsm_move()
1114 					if (qc->dev->horkage &  in ata_sff_hsm_move()
1116 						qc->err_mask |=  in ata_sff_hsm_move()
1126 					qc->err_mask |= AC_ERR_HSM |  in ata_sff_hsm_move()
1146 				qc->err_mask |= AC_ERR_DEV;  in ata_sff_hsm_move()
1148 				if (!(qc->tf.flags & ATA_TFLAG_WRITE)) {  in ata_sff_hsm_move()
1149 					ata_pio_sectors(qc);  in ata_sff_hsm_move()
1157 					qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1168 					qc->err_mask |= AC_ERR_NODEV_HINT;  in ata_sff_hsm_move()
1178 			ata_pio_sectors(qc);  in ata_sff_hsm_move()
1181 			    (!(qc->tf.flags & ATA_TFLAG_WRITE))) {  in ata_sff_hsm_move()
1193 			qc->err_mask |= __ac_err_mask(status);  in ata_sff_hsm_move()
1199 		trace_ata_sff_hsm_command_complete(qc, status);  in ata_sff_hsm_move()
1201 		WARN_ON_ONCE(qc->err_mask & (AC_ERR_DEV | AC_ERR_HSM));  in ata_sff_hsm_move()
1206 		ata_hsm_qc_complete(qc, in_wq);  in ata_sff_hsm_move()
1215 		ata_hsm_qc_complete(qc, in_wq);  in ata_sff_hsm_move()
1280 	struct ata_queued_cmd *qc;  in ata_sff_pio_task()  local
1288 	qc = ata_qc_from_tag(ap, link->active_tag);  in ata_sff_pio_task()
1289 	if (!qc) {  in ata_sff_pio_task()
1323 	poll_next = ata_sff_hsm_move(ap, qc, status, 1);  in ata_sff_pio_task()
1347 unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc)  in ata_sff_qc_issue()  argument
1349 	struct ata_port *ap = qc->ap;  in ata_sff_qc_issue()
1350 	struct ata_link *link = qc->dev->link;  in ata_sff_qc_issue()
1356 		qc->tf.flags |= ATA_TFLAG_POLLING;  in ata_sff_qc_issue()
1359 	ata_dev_select(ap, qc->dev->devno, 1, 0);  in ata_sff_qc_issue()
1362 	switch (qc->tf.protocol) {  in ata_sff_qc_issue()
1364 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1365 			ata_qc_set_polling(qc);  in ata_sff_qc_issue()
1367 		ata_tf_to_host(ap, &qc->tf, qc->tag);  in ata_sff_qc_issue()
1370 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1376 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1377 			ata_qc_set_polling(qc);  in ata_sff_qc_issue()
1379 		ata_tf_to_host(ap, &qc->tf, qc->tag);  in ata_sff_qc_issue()
1381 		if (qc->tf.flags & ATA_TFLAG_WRITE) {  in ata_sff_qc_issue()
1393 			if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1406 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1407 			ata_qc_set_polling(qc);  in ata_sff_qc_issue()
1409 		ata_tf_to_host(ap, &qc->tf, qc->tag);  in ata_sff_qc_issue()
1414 		if ((!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) ||  in ata_sff_qc_issue()
1415 		    (qc->tf.flags & ATA_TFLAG_POLLING))  in ata_sff_qc_issue()
1440 bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc)  in ata_sff_qc_fill_rtf()  argument
1442 	qc->ap->ops->sff_tf_read(qc->ap, &qc->result_tf);  in ata_sff_qc_fill_rtf()
1464 					struct ata_queued_cmd *qc,  in __ata_sff_port_intr()  argument
1469 	trace_ata_sff_port_intr(qc, hsmv_on_idle);  in __ata_sff_port_intr()
1482 		if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))  in __ata_sff_port_intr()
1496 			qc->err_mask |= AC_ERR_HSM;  in __ata_sff_port_intr()
1506 	ata_sff_hsm_move(ap, qc, status, 0);  in __ata_sff_port_intr()
1524 unsigned int ata_sff_port_intr(struct ata_port *ap, struct ata_queued_cmd *qc)  in ata_sff_port_intr()  argument
1526 	return __ata_sff_port_intr(ap, qc, false);  in ata_sff_port_intr()
1546 		struct ata_queued_cmd *qc;  in __ata_sff_interrupt()  local
1548 		qc = ata_qc_from_tag(ap, ap->link.active_tag);  in __ata_sff_interrupt()
1549 		if (qc) {  in __ata_sff_interrupt()
1550 			if (!(qc->tf.flags & ATA_TFLAG_POLLING))  in __ata_sff_interrupt()
1551 				handled |= port_intr(ap, qc);  in __ata_sff_interrupt()
1638 	struct ata_queued_cmd *qc;  in ata_sff_lost_interrupt()  local
1641 	qc = ata_qc_from_tag(ap, ap->link.active_tag);  in ata_sff_lost_interrupt()
1643 	if (!qc || qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_lost_interrupt()
1657 	ata_sff_port_intr(ap, qc);  in ata_sff_lost_interrupt()
2091 void ata_sff_drain_fifo(struct ata_queued_cmd *qc)  in ata_sff_drain_fifo()  argument
2097 	if (qc == NULL || qc->dma_dir == DMA_TO_DEVICE)  in ata_sff_drain_fifo()
2100 	ap = qc->ap;  in ata_sff_drain_fifo()
2128 	struct ata_queued_cmd *qc;  in ata_sff_error_handler()  local
2131 	qc = __ata_qc_from_tag(ap, ap->link.active_tag);  in ata_sff_error_handler()
2132 	if (qc && !(qc->flags & ATA_QCFLAG_FAILED))  in ata_sff_error_handler()
2133 		qc = NULL;  in ata_sff_error_handler()
2145 		ap->ops->sff_drain_fifo(qc);  in ata_sff_error_handler()
2567 static void ata_bmdma_fill_sg(struct ata_queued_cmd *qc)  in ata_bmdma_fill_sg()  argument
2569 	struct ata_port *ap = qc->ap;  in ata_bmdma_fill_sg()
2575 	for_each_sg(qc->sg, sg, qc->n_elem, si) {  in ata_bmdma_fill_sg()
2617 static void ata_bmdma_fill_sg_dumb(struct ata_queued_cmd *qc)  in ata_bmdma_fill_sg_dumb()  argument
2619 	struct ata_port *ap = qc->ap;  in ata_bmdma_fill_sg_dumb()
2625 	for_each_sg(qc->sg, sg, qc->n_elem, si) {  in ata_bmdma_fill_sg_dumb()
2672 enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc)  in ata_bmdma_qc_prep()  argument
2674 	if (!(qc->flags & ATA_QCFLAG_DMAMAP))  in ata_bmdma_qc_prep()
2677 	ata_bmdma_fill_sg(qc);  in ata_bmdma_qc_prep()
2692 enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc)  in ata_bmdma_dumb_qc_prep()  argument
2694 	if (!(qc->flags & ATA_QCFLAG_DMAMAP))  in ata_bmdma_dumb_qc_prep()
2697 	ata_bmdma_fill_sg_dumb(qc);  in ata_bmdma_dumb_qc_prep()
2717 unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc)  in ata_bmdma_qc_issue()  argument
2719 	struct ata_port *ap = qc->ap;  in ata_bmdma_qc_issue()
2720 	struct ata_link *link = qc->dev->link;  in ata_bmdma_qc_issue()
2723 	if (!ata_is_dma(qc->tf.protocol))  in ata_bmdma_qc_issue()
2724 		return ata_sff_qc_issue(qc);  in ata_bmdma_qc_issue()
2727 	ata_dev_select(ap, qc->dev->devno, 1, 0);  in ata_bmdma_qc_issue()
2730 	switch (qc->tf.protocol) {  in ata_bmdma_qc_issue()
2732 		WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING);  in ata_bmdma_qc_issue()
2734 		trace_ata_tf_load(ap, &qc->tf);  in ata_bmdma_qc_issue()
2735 		ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */  in ata_bmdma_qc_issue()
2736 		trace_ata_bmdma_setup(ap, &qc->tf, qc->tag);  in ata_bmdma_qc_issue()
2737 		ap->ops->bmdma_setup(qc);	    /* set up bmdma */  in ata_bmdma_qc_issue()
2738 		trace_ata_bmdma_start(ap, &qc->tf, qc->tag);  in ata_bmdma_qc_issue()
2739 		ap->ops->bmdma_start(qc);	    /* initiate bmdma */  in ata_bmdma_qc_issue()
2744 		WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING);  in ata_bmdma_qc_issue()
2746 		trace_ata_tf_load(ap, &qc->tf);  in ata_bmdma_qc_issue()
2747 		ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */  in ata_bmdma_qc_issue()
2748 		trace_ata_bmdma_setup(ap, &qc->tf, qc->tag);  in ata_bmdma_qc_issue()
2749 		ap->ops->bmdma_setup(qc);	    /* set up bmdma */  in ata_bmdma_qc_issue()
2753 		if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))  in ata_bmdma_qc_issue()
2779 unsigned int ata_bmdma_port_intr(struct ata_port *ap, struct ata_queued_cmd *qc)  in ata_bmdma_port_intr()  argument
2786 	if (ap->hsm_task_state == HSM_ST_LAST && ata_is_dma(qc->tf.protocol)) {  in ata_bmdma_port_intr()
2796 		trace_ata_bmdma_stop(ap, &qc->tf, qc->tag);  in ata_bmdma_port_intr()
2797 		ap->ops->bmdma_stop(qc);  in ata_bmdma_port_intr()
2802 			qc->err_mask |= AC_ERR_HOST_BUS;  in ata_bmdma_port_intr()
2807 	handled = __ata_sff_port_intr(ap, qc, bmdma_stopped);  in ata_bmdma_port_intr()
2809 	if (unlikely(qc->err_mask) && ata_is_dma(qc->tf.protocol))  in ata_bmdma_port_intr()
2850 	struct ata_queued_cmd *qc;  in ata_bmdma_error_handler()  local
2854 	qc = __ata_qc_from_tag(ap, ap->link.active_tag);  in ata_bmdma_error_handler()
2855 	if (qc && !(qc->flags & ATA_QCFLAG_FAILED))  in ata_bmdma_error_handler()
2856 		qc = NULL;  in ata_bmdma_error_handler()
2861 	if (qc && ata_is_dma(qc->tf.protocol)) {  in ata_bmdma_error_handler()
2872 		if (qc->err_mask == AC_ERR_TIMEOUT && (host_stat & ATA_DMA_ERR)) {  in ata_bmdma_error_handler()
2873 			qc->err_mask = AC_ERR_HOST_BUS;  in ata_bmdma_error_handler()
2877 		trace_ata_bmdma_stop(ap, &qc->tf, qc->tag);  in ata_bmdma_error_handler()
2878 		ap->ops->bmdma_stop(qc);  in ata_bmdma_error_handler()
2904 void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc)  in ata_bmdma_post_internal_cmd()  argument
2906 	struct ata_port *ap = qc->ap;  in ata_bmdma_post_internal_cmd()
2909 	if (ata_is_dma(qc->tf.protocol)) {  in ata_bmdma_post_internal_cmd()
2911 		trace_ata_bmdma_stop(ap, &qc->tf, qc->tag);  in ata_bmdma_post_internal_cmd()
2912 		ap->ops->bmdma_stop(qc);  in ata_bmdma_post_internal_cmd()
2947 void ata_bmdma_setup(struct ata_queued_cmd *qc)  in ata_bmdma_setup()  argument
2949 	struct ata_port *ap = qc->ap;  in ata_bmdma_setup()
2950 	unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);  in ata_bmdma_setup()
2965 	ap->ops->sff_exec_command(ap, &qc->tf);  in ata_bmdma_setup()
2976 void ata_bmdma_start(struct ata_queued_cmd *qc)  in ata_bmdma_start()  argument
2978 	struct ata_port *ap = qc->ap;  in ata_bmdma_start()
3013 void ata_bmdma_stop(struct ata_queued_cmd *qc)  in ata_bmdma_stop()  argument
3015 	struct ata_port *ap = qc->ap;  in ata_bmdma_stop()