542 unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, unsigned char *buf,  in ata_sff_data_xfer()  argument
545 	struct ata_port *ap = qc->dev->link->ap;  in ata_sff_data_xfer()
597 unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, unsigned char *buf,  in ata_sff_data_xfer32()  argument
600 	struct ata_device *dev = qc->dev;  in ata_sff_data_xfer32()
607 		return ata_sff_data_xfer(qc, buf, buflen, rw);  in ata_sff_data_xfer32()
653 static void ata_pio_sector(struct ata_queued_cmd *qc)  in ata_pio_sector()  argument
655 	int do_write = (qc->tf.flags & ATA_TFLAG_WRITE);  in ata_pio_sector()
656 	struct ata_port *ap = qc->ap;  in ata_pio_sector()
661 	if (!qc->cursg) {  in ata_pio_sector()
662 		qc->curbytes = qc->nbytes;  in ata_pio_sector()
665 	if (qc->curbytes == qc->nbytes - qc->sect_size)  in ata_pio_sector()
668 	page = sg_page(qc->cursg);  in ata_pio_sector()
669 	offset = qc->cursg->offset + qc->cursg_ofs;  in ata_pio_sector()
675 	DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");  in ata_pio_sector()
679 	ap->ops->sff_data_xfer(qc, buf + offset, qc->sect_size, do_write);  in ata_pio_sector()
685 	qc->curbytes += qc->sect_size;  in ata_pio_sector()
686 	qc->cursg_ofs += qc->sect_size;  in ata_pio_sector()
688 	if (qc->cursg_ofs == qc->cursg->length) {  in ata_pio_sector()
689 		qc->cursg = sg_next(qc->cursg);  in ata_pio_sector()
690 		if (!qc->cursg)  in ata_pio_sector()
692 		qc->cursg_ofs = 0;  in ata_pio_sector()
706 static void ata_pio_sectors(struct ata_queued_cmd *qc)  in ata_pio_sectors()  argument
708 	if (is_multi_taskfile(&qc->tf)) {  in ata_pio_sectors()
712 		WARN_ON_ONCE(qc->dev->multi_count == 0);  in ata_pio_sectors()
714 		nsect = min((qc->nbytes - qc->curbytes) / qc->sect_size,  in ata_pio_sectors()
715 			    qc->dev->multi_count);  in ata_pio_sectors()
717 			ata_pio_sector(qc);  in ata_pio_sectors()
719 		ata_pio_sector(qc);  in ata_pio_sectors()
721 	ata_sff_sync(qc->ap); /* flush */  in ata_pio_sectors()
735 static void atapi_send_cdb(struct ata_port *ap, struct ata_queued_cmd *qc)  in atapi_send_cdb()  argument
739 	WARN_ON_ONCE(qc->dev->cdb_len < 12);  in atapi_send_cdb()
741 	ap->ops->sff_data_xfer(qc, qc->cdb, qc->dev->cdb_len, 1);  in atapi_send_cdb()
745 	switch (qc->tf.protocol) {  in atapi_send_cdb()
756 		ap->ops->bmdma_start(qc);  in atapi_send_cdb()
775 static int __atapi_pio_bytes(struct ata_queued_cmd *qc, unsigned int bytes)  in __atapi_pio_bytes()  argument
777 	int rw = (qc->tf.flags & ATA_TFLAG_WRITE) ? WRITE : READ;  in __atapi_pio_bytes()
778 	struct ata_port *ap = qc->ap;  in __atapi_pio_bytes()
779 	struct ata_device *dev = qc->dev;  in __atapi_pio_bytes()
787 	sg = qc->cursg;  in __atapi_pio_bytes()
791 				  qc->nbytes, qc->curbytes, bytes);  in __atapi_pio_bytes()
796 	offset = sg->offset + qc->cursg_ofs;  in __atapi_pio_bytes()
803 	count = min(sg->length - qc->cursg_ofs, bytes);  in __atapi_pio_bytes()
808 	DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");  in __atapi_pio_bytes()
812 	consumed = ap->ops->sff_data_xfer(qc, buf + offset, count, rw);  in __atapi_pio_bytes()
816 	qc->curbytes += count;  in __atapi_pio_bytes()
817 	qc->cursg_ofs += count;  in __atapi_pio_bytes()
819 	if (qc->cursg_ofs == sg->length) {  in __atapi_pio_bytes()
820 		qc->cursg = sg_next(qc->cursg);  in __atapi_pio_bytes()
821 		qc->cursg_ofs = 0;  in __atapi_pio_bytes()
844 static void atapi_pio_bytes(struct ata_queued_cmd *qc)  in atapi_pio_bytes()  argument
846 	struct ata_port *ap = qc->ap;  in atapi_pio_bytes()
847 	struct ata_device *dev = qc->dev;  in atapi_pio_bytes()
850 	int i_write, do_write = (qc->tf.flags & ATA_TFLAG_WRITE) ? 1 : 0;  in atapi_pio_bytes()
858 	ap->ops->sff_tf_read(ap, &qc->result_tf);  in atapi_pio_bytes()
859 	ireason = qc->result_tf.nsect;  in atapi_pio_bytes()
860 	bc_lo = qc->result_tf.lbam;  in atapi_pio_bytes()
861 	bc_hi = qc->result_tf.lbah;  in atapi_pio_bytes()
878 	if (unlikely(__atapi_pio_bytes(qc, bytes)))  in atapi_pio_bytes()
888 	qc->err_mask |= AC_ERR_HSM;  in atapi_pio_bytes()
901 						struct ata_queued_cmd *qc)  in ata_hsm_ok_in_wq()  argument
903 	if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_hsm_ok_in_wq()
907 		if (qc->tf.protocol == ATA_PROT_PIO &&  in ata_hsm_ok_in_wq()
908 		   (qc->tf.flags & ATA_TFLAG_WRITE))  in ata_hsm_ok_in_wq()
911 		if (ata_is_atapi(qc->tf.protocol) &&  in ata_hsm_ok_in_wq()
912 		   !(qc->dev->flags & ATA_DFLAG_CDB_INTR))  in ata_hsm_ok_in_wq()
930 static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)  in ata_hsm_qc_complete()  argument
932 	struct ata_port *ap = qc->ap;  in ata_hsm_qc_complete()
939 			qc = ata_qc_from_tag(ap, qc->tag);  in ata_hsm_qc_complete()
940 			if (qc) {  in ata_hsm_qc_complete()
941 				if (likely(!(qc->err_mask & AC_ERR_HSM))) {  in ata_hsm_qc_complete()
943 					ata_qc_complete(qc);  in ata_hsm_qc_complete()
948 			if (likely(!(qc->err_mask & AC_ERR_HSM)))  in ata_hsm_qc_complete()
949 				ata_qc_complete(qc);  in ata_hsm_qc_complete()
956 			ata_qc_complete(qc);  in ata_hsm_qc_complete()
958 			ata_qc_complete(qc);  in ata_hsm_qc_complete()
972 int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,  in ata_sff_hsm_move()  argument
975 	struct ata_link *link = qc->dev->link;  in ata_sff_hsm_move()
981 	WARN_ON_ONCE((qc->flags & ATA_QCFLAG_ACTIVE) == 0);  in ata_sff_hsm_move()
987 	WARN_ON_ONCE(in_wq != ata_hsm_ok_in_wq(ap, qc));  in ata_sff_hsm_move()
991 		ap->print_id, qc->tf.protocol, ap->hsm_task_state, status);  in ata_sff_hsm_move()
1001 		poll_next = (qc->tf.flags & ATA_TFLAG_POLLING);  in ata_sff_hsm_move()
1008 				qc->err_mask |= AC_ERR_DEV;  in ata_sff_hsm_move()
1013 				qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1032 			if (!(qc->dev->horkage & ATA_HORKAGE_STUCK_ERR)) {  in ata_sff_hsm_move()
1036 				qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1042 		if (qc->tf.protocol == ATA_PROT_PIO) {  in ata_sff_hsm_move()
1052 			ata_pio_sectors(qc);  in ata_sff_hsm_move()
1055 			atapi_send_cdb(ap, qc);  in ata_sff_hsm_move()
1064 		if (qc->tf.protocol == ATAPI_PROT_PIO) {  in ata_sff_hsm_move()
1084 				qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1089 			atapi_pio_bytes(qc);  in ata_sff_hsm_move()
1101 					qc->err_mask |= AC_ERR_DEV;  in ata_sff_hsm_move()
1107 					if (qc->dev->horkage &  in ata_sff_hsm_move()
1109 						qc->err_mask |=  in ata_sff_hsm_move()
1119 					qc->err_mask |= AC_ERR_HSM |  in ata_sff_hsm_move()
1139 				qc->err_mask |= AC_ERR_DEV;  in ata_sff_hsm_move()
1141 				if (!(qc->tf.flags & ATA_TFLAG_WRITE)) {  in ata_sff_hsm_move()
1142 					ata_pio_sectors(qc);  in ata_sff_hsm_move()
1150 					qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1161 					qc->err_mask |= AC_ERR_NODEV_HINT;  in ata_sff_hsm_move()
1171 			ata_pio_sectors(qc);  in ata_sff_hsm_move()
1174 			    (!(qc->tf.flags & ATA_TFLAG_WRITE))) {  in ata_sff_hsm_move()
1186 			qc->err_mask |= __ac_err_mask(status);  in ata_sff_hsm_move()
1193 			ap->print_id, qc->dev->devno, status);  in ata_sff_hsm_move()
1195 		WARN_ON_ONCE(qc->err_mask & (AC_ERR_DEV | AC_ERR_HSM));  in ata_sff_hsm_move()
1200 		ata_hsm_qc_complete(qc, in_wq);  in ata_sff_hsm_move()
1209 		ata_hsm_qc_complete(qc, in_wq);  in ata_sff_hsm_move()
1277 	struct ata_queued_cmd *qc;  in ata_sff_pio_task()  local
1285 	qc = ata_qc_from_tag(ap, link->active_tag);  in ata_sff_pio_task()
1286 	if (!qc) {  in ata_sff_pio_task()
1320 	poll_next = ata_sff_hsm_move(ap, qc, status, 1);  in ata_sff_pio_task()
1344 unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc)  in ata_sff_qc_issue()  argument
1346 	struct ata_port *ap = qc->ap;  in ata_sff_qc_issue()
1347 	struct ata_link *link = qc->dev->link;  in ata_sff_qc_issue()
1353 		qc->tf.flags |= ATA_TFLAG_POLLING;  in ata_sff_qc_issue()
1356 	ata_dev_select(ap, qc->dev->devno, 1, 0);  in ata_sff_qc_issue()
1359 	switch (qc->tf.protocol) {  in ata_sff_qc_issue()
1361 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1362 			ata_qc_set_polling(qc);  in ata_sff_qc_issue()
1364 		ata_tf_to_host(ap, &qc->tf);  in ata_sff_qc_issue()
1367 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1373 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1374 			ata_qc_set_polling(qc);  in ata_sff_qc_issue()
1376 		ata_tf_to_host(ap, &qc->tf);  in ata_sff_qc_issue()
1378 		if (qc->tf.flags & ATA_TFLAG_WRITE) {  in ata_sff_qc_issue()
1390 			if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1403 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1404 			ata_qc_set_polling(qc);  in ata_sff_qc_issue()
1406 		ata_tf_to_host(ap, &qc->tf);  in ata_sff_qc_issue()
1411 		if ((!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) ||  in ata_sff_qc_issue()
1412 		    (qc->tf.flags & ATA_TFLAG_POLLING))  in ata_sff_qc_issue()
1437 bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc)  in ata_sff_qc_fill_rtf()  argument
1439 	qc->ap->ops->sff_tf_read(qc->ap, &qc->result_tf);  in ata_sff_qc_fill_rtf()
1461 					struct ata_queued_cmd *qc,  in __ata_sff_port_intr()  argument
1467 		ap->print_id, qc->tf.protocol, ap->hsm_task_state);  in __ata_sff_port_intr()
1480 		if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))  in __ata_sff_port_intr()
1494 			qc->err_mask |= AC_ERR_HSM;  in __ata_sff_port_intr()
1504 	ata_sff_hsm_move(ap, qc, status, 0);  in __ata_sff_port_intr()
1522 unsigned int ata_sff_port_intr(struct ata_port *ap, struct ata_queued_cmd *qc)  in ata_sff_port_intr()  argument
1524 	return __ata_sff_port_intr(ap, qc, false);  in ata_sff_port_intr()
1544 		struct ata_queued_cmd *qc;  in __ata_sff_interrupt()  local
1546 		qc = ata_qc_from_tag(ap, ap->link.active_tag);  in __ata_sff_interrupt()
1547 		if (qc) {  in __ata_sff_interrupt()
1548 			if (!(qc->tf.flags & ATA_TFLAG_POLLING))  in __ata_sff_interrupt()
1549 				handled |= port_intr(ap, qc);  in __ata_sff_interrupt()
1636 	struct ata_queued_cmd *qc;  in ata_sff_lost_interrupt()  local
1639 	qc = ata_qc_from_tag(ap, ap->link.active_tag);  in ata_sff_lost_interrupt()
1641 	if (!qc || qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_lost_interrupt()
1655 	ata_sff_port_intr(ap, qc);  in ata_sff_lost_interrupt()
2096 void ata_sff_drain_fifo(struct ata_queued_cmd *qc)  in ata_sff_drain_fifo()  argument
2102 	if (qc == NULL || qc->dma_dir == DMA_TO_DEVICE)  in ata_sff_drain_fifo()
2105 	ap = qc->ap;  in ata_sff_drain_fifo()
2134 	struct ata_queued_cmd *qc;  in ata_sff_error_handler()  local
2137 	qc = __ata_qc_from_tag(ap, ap->link.active_tag);  in ata_sff_error_handler()
2138 	if (qc && !(qc->flags & ATA_QCFLAG_FAILED))  in ata_sff_error_handler()
2139 		qc = NULL;  in ata_sff_error_handler()
2151 		ap->ops->sff_drain_fifo(qc);  in ata_sff_error_handler()
2575 static void ata_bmdma_fill_sg(struct ata_queued_cmd *qc)  in ata_bmdma_fill_sg()  argument
2577 	struct ata_port *ap = qc->ap;  in ata_bmdma_fill_sg()
2583 	for_each_sg(qc->sg, sg, qc->n_elem, si) {  in ata_bmdma_fill_sg()
2626 static void ata_bmdma_fill_sg_dumb(struct ata_queued_cmd *qc)  in ata_bmdma_fill_sg_dumb()  argument
2628 	struct ata_port *ap = qc->ap;  in ata_bmdma_fill_sg_dumb()
2634 	for_each_sg(qc->sg, sg, qc->n_elem, si) {  in ata_bmdma_fill_sg_dumb()
2682 void ata_bmdma_qc_prep(struct ata_queued_cmd *qc)  in ata_bmdma_qc_prep()  argument
2684 	if (!(qc->flags & ATA_QCFLAG_DMAMAP))  in ata_bmdma_qc_prep()
2687 	ata_bmdma_fill_sg(qc);  in ata_bmdma_qc_prep()
2700 void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc)  in ata_bmdma_dumb_qc_prep()  argument
2702 	if (!(qc->flags & ATA_QCFLAG_DMAMAP))  in ata_bmdma_dumb_qc_prep()
2705 	ata_bmdma_fill_sg_dumb(qc);  in ata_bmdma_dumb_qc_prep()
2723 unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc)  in ata_bmdma_qc_issue()  argument
2725 	struct ata_port *ap = qc->ap;  in ata_bmdma_qc_issue()
2726 	struct ata_link *link = qc->dev->link;  in ata_bmdma_qc_issue()
2729 	if (!ata_is_dma(qc->tf.protocol))  in ata_bmdma_qc_issue()
2730 		return ata_sff_qc_issue(qc);  in ata_bmdma_qc_issue()
2733 	ata_dev_select(ap, qc->dev->devno, 1, 0);  in ata_bmdma_qc_issue()
2736 	switch (qc->tf.protocol) {  in ata_bmdma_qc_issue()
2738 		WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING);  in ata_bmdma_qc_issue()
2740 		ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */  in ata_bmdma_qc_issue()
2741 		ap->ops->bmdma_setup(qc);	    /* set up bmdma */  in ata_bmdma_qc_issue()
2742 		ap->ops->bmdma_start(qc);	    /* initiate bmdma */  in ata_bmdma_qc_issue()
2747 		WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING);  in ata_bmdma_qc_issue()
2749 		ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */  in ata_bmdma_qc_issue()
2750 		ap->ops->bmdma_setup(qc);	    /* set up bmdma */  in ata_bmdma_qc_issue()
2754 		if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))  in ata_bmdma_qc_issue()
2780 unsigned int ata_bmdma_port_intr(struct ata_port *ap, struct ata_queued_cmd *qc)  in ata_bmdma_port_intr()  argument
2787 	if (ap->hsm_task_state == HSM_ST_LAST && ata_is_dma(qc->tf.protocol)) {  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()
2871 		if (qc->err_mask == AC_ERR_TIMEOUT && (host_stat & ATA_DMA_ERR)) {  in ata_bmdma_error_handler()
2872 			qc->err_mask = AC_ERR_HOST_BUS;  in ata_bmdma_error_handler()
2876 		ap->ops->bmdma_stop(qc);  in ata_bmdma_error_handler()
2902 void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc)  in ata_bmdma_post_internal_cmd()  argument
2904 	struct ata_port *ap = qc->ap;  in ata_bmdma_post_internal_cmd()
2907 	if (ata_is_dma(qc->tf.protocol)) {  in ata_bmdma_post_internal_cmd()
2909 		ap->ops->bmdma_stop(qc);  in ata_bmdma_post_internal_cmd()
2944 void ata_bmdma_setup(struct ata_queued_cmd *qc)  in ata_bmdma_setup()  argument
2946 	struct ata_port *ap = qc->ap;  in ata_bmdma_setup()
2947 	unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);  in ata_bmdma_setup()
2962 	ap->ops->sff_exec_command(ap, &qc->tf);  in ata_bmdma_setup()
2973 void ata_bmdma_start(struct ata_queued_cmd *qc)  in ata_bmdma_start()  argument
2975 	struct ata_port *ap = qc->ap;  in ata_bmdma_start()
3010 void ata_bmdma_stop(struct ata_queued_cmd *qc)  in ata_bmdma_stop()  argument
3012 	struct ata_port *ap = qc->ap;  in ata_bmdma_stop()