538 unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, unsigned char *buf,  in ata_sff_data_xfer()  argument
541 	struct ata_port *ap = qc->dev->link->ap;  in ata_sff_data_xfer()
593 unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, unsigned char *buf,  in ata_sff_data_xfer32()  argument
596 	struct ata_device *dev = qc->dev;  in ata_sff_data_xfer32()
603 		return ata_sff_data_xfer(qc, buf, buflen, rw);  in ata_sff_data_xfer32()
649 static void ata_pio_sector(struct ata_queued_cmd *qc)  in ata_pio_sector()  argument
651 	int do_write = (qc->tf.flags & ATA_TFLAG_WRITE);  in ata_pio_sector()
652 	struct ata_port *ap = qc->ap;  in ata_pio_sector()
657 	if (!qc->cursg) {  in ata_pio_sector()
658 		qc->curbytes = qc->nbytes;  in ata_pio_sector()
661 	if (qc->curbytes == qc->nbytes - qc->sect_size)  in ata_pio_sector()
664 	page = sg_page(qc->cursg);  in ata_pio_sector()
665 	offset = qc->cursg->offset + qc->cursg_ofs;  in ata_pio_sector()
671 	DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");  in ata_pio_sector()
675 	ap->ops->sff_data_xfer(qc, buf + offset, qc->sect_size, do_write);  in ata_pio_sector()
681 	qc->curbytes += qc->sect_size;  in ata_pio_sector()
682 	qc->cursg_ofs += qc->sect_size;  in ata_pio_sector()
684 	if (qc->cursg_ofs == qc->cursg->length) {  in ata_pio_sector()
685 		qc->cursg = sg_next(qc->cursg);  in ata_pio_sector()
686 		if (!qc->cursg)  in ata_pio_sector()
688 		qc->cursg_ofs = 0;  in ata_pio_sector()
702 static void ata_pio_sectors(struct ata_queued_cmd *qc)  in ata_pio_sectors()  argument
704 	if (is_multi_taskfile(&qc->tf)) {  in ata_pio_sectors()
708 		WARN_ON_ONCE(qc->dev->multi_count == 0);  in ata_pio_sectors()
710 		nsect = min((qc->nbytes - qc->curbytes) / qc->sect_size,  in ata_pio_sectors()
711 			    qc->dev->multi_count);  in ata_pio_sectors()
713 			ata_pio_sector(qc);  in ata_pio_sectors()
715 		ata_pio_sector(qc);  in ata_pio_sectors()
717 	ata_sff_sync(qc->ap); /* flush */  in ata_pio_sectors()
731 static void atapi_send_cdb(struct ata_port *ap, struct ata_queued_cmd *qc)  in atapi_send_cdb()  argument
735 	WARN_ON_ONCE(qc->dev->cdb_len < 12);  in atapi_send_cdb()
737 	ap->ops->sff_data_xfer(qc, qc->cdb, qc->dev->cdb_len, 1);  in atapi_send_cdb()
741 	switch (qc->tf.protocol) {  in atapi_send_cdb()
752 		ap->ops->bmdma_start(qc);  in atapi_send_cdb()
771 static int __atapi_pio_bytes(struct ata_queued_cmd *qc, unsigned int bytes)  in __atapi_pio_bytes()  argument
773 	int rw = (qc->tf.flags & ATA_TFLAG_WRITE) ? WRITE : READ;  in __atapi_pio_bytes()
774 	struct ata_port *ap = qc->ap;  in __atapi_pio_bytes()
775 	struct ata_device *dev = qc->dev;  in __atapi_pio_bytes()
783 	sg = qc->cursg;  in __atapi_pio_bytes()
787 				  qc->nbytes, qc->curbytes, bytes);  in __atapi_pio_bytes()
792 	offset = sg->offset + qc->cursg_ofs;  in __atapi_pio_bytes()
799 	count = min(sg->length - qc->cursg_ofs, bytes);  in __atapi_pio_bytes()
804 	DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");  in __atapi_pio_bytes()
808 	consumed = ap->ops->sff_data_xfer(qc, buf + offset, count, rw);  in __atapi_pio_bytes()
812 	qc->curbytes += count;  in __atapi_pio_bytes()
813 	qc->cursg_ofs += count;  in __atapi_pio_bytes()
815 	if (qc->cursg_ofs == sg->length) {  in __atapi_pio_bytes()
816 		qc->cursg = sg_next(qc->cursg);  in __atapi_pio_bytes()
817 		qc->cursg_ofs = 0;  in __atapi_pio_bytes()
840 static void atapi_pio_bytes(struct ata_queued_cmd *qc)  in atapi_pio_bytes()  argument
842 	struct ata_port *ap = qc->ap;  in atapi_pio_bytes()
843 	struct ata_device *dev = qc->dev;  in atapi_pio_bytes()
846 	int i_write, do_write = (qc->tf.flags & ATA_TFLAG_WRITE) ? 1 : 0;  in atapi_pio_bytes()
854 	ap->ops->sff_tf_read(ap, &qc->result_tf);  in atapi_pio_bytes()
855 	ireason = qc->result_tf.nsect;  in atapi_pio_bytes()
856 	bc_lo = qc->result_tf.lbam;  in atapi_pio_bytes()
857 	bc_hi = qc->result_tf.lbah;  in atapi_pio_bytes()
874 	if (unlikely(__atapi_pio_bytes(qc, bytes)))  in atapi_pio_bytes()
884 	qc->err_mask |= AC_ERR_HSM;  in atapi_pio_bytes()
897 						struct ata_queued_cmd *qc)  in ata_hsm_ok_in_wq()  argument
899 	if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_hsm_ok_in_wq()
903 		if (qc->tf.protocol == ATA_PROT_PIO &&  in ata_hsm_ok_in_wq()
904 		   (qc->tf.flags & ATA_TFLAG_WRITE))  in ata_hsm_ok_in_wq()
907 		if (ata_is_atapi(qc->tf.protocol) &&  in ata_hsm_ok_in_wq()
908 		   !(qc->dev->flags & ATA_DFLAG_CDB_INTR))  in ata_hsm_ok_in_wq()
926 static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)  in ata_hsm_qc_complete()  argument
928 	struct ata_port *ap = qc->ap;  in ata_hsm_qc_complete()
935 			qc = ata_qc_from_tag(ap, qc->tag);  in ata_hsm_qc_complete()
936 			if (qc) {  in ata_hsm_qc_complete()
937 				if (likely(!(qc->err_mask & AC_ERR_HSM))) {  in ata_hsm_qc_complete()
939 					ata_qc_complete(qc);  in ata_hsm_qc_complete()
944 			if (likely(!(qc->err_mask & AC_ERR_HSM)))  in ata_hsm_qc_complete()
945 				ata_qc_complete(qc);  in ata_hsm_qc_complete()
952 			ata_qc_complete(qc);  in ata_hsm_qc_complete()
954 			ata_qc_complete(qc);  in ata_hsm_qc_complete()
968 int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,  in ata_sff_hsm_move()  argument
971 	struct ata_link *link = qc->dev->link;  in ata_sff_hsm_move()
977 	WARN_ON_ONCE((qc->flags & ATA_QCFLAG_ACTIVE) == 0);  in ata_sff_hsm_move()
983 	WARN_ON_ONCE(in_wq != ata_hsm_ok_in_wq(ap, qc));  in ata_sff_hsm_move()
987 		ap->print_id, qc->tf.protocol, ap->hsm_task_state, status);  in ata_sff_hsm_move()
997 		poll_next = (qc->tf.flags & ATA_TFLAG_POLLING);  in ata_sff_hsm_move()
1004 				qc->err_mask |= AC_ERR_DEV;  in ata_sff_hsm_move()
1009 				qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1028 			if (!(qc->dev->horkage & ATA_HORKAGE_STUCK_ERR)) {  in ata_sff_hsm_move()
1032 				qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1038 		if (qc->tf.protocol == ATA_PROT_PIO) {  in ata_sff_hsm_move()
1048 			ata_pio_sectors(qc);  in ata_sff_hsm_move()
1051 			atapi_send_cdb(ap, qc);  in ata_sff_hsm_move()
1060 		if (qc->tf.protocol == ATAPI_PROT_PIO) {  in ata_sff_hsm_move()
1080 				qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1085 			atapi_pio_bytes(qc);  in ata_sff_hsm_move()
1097 					qc->err_mask |= AC_ERR_DEV;  in ata_sff_hsm_move()
1103 					if (qc->dev->horkage &  in ata_sff_hsm_move()
1105 						qc->err_mask |=  in ata_sff_hsm_move()
1115 					qc->err_mask |= AC_ERR_HSM |  in ata_sff_hsm_move()
1135 				qc->err_mask |= AC_ERR_DEV;  in ata_sff_hsm_move()
1137 				if (!(qc->tf.flags & ATA_TFLAG_WRITE)) {  in ata_sff_hsm_move()
1138 					ata_pio_sectors(qc);  in ata_sff_hsm_move()
1146 					qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1157 					qc->err_mask |= AC_ERR_NODEV_HINT;  in ata_sff_hsm_move()
1167 			ata_pio_sectors(qc);  in ata_sff_hsm_move()
1170 			    (!(qc->tf.flags & ATA_TFLAG_WRITE))) {  in ata_sff_hsm_move()
1182 			qc->err_mask |= __ac_err_mask(status);  in ata_sff_hsm_move()
1189 			ap->print_id, qc->dev->devno, status);  in ata_sff_hsm_move()
1191 		WARN_ON_ONCE(qc->err_mask & (AC_ERR_DEV | AC_ERR_HSM));  in ata_sff_hsm_move()
1196 		ata_hsm_qc_complete(qc, in_wq);  in ata_sff_hsm_move()
1205 		ata_hsm_qc_complete(qc, in_wq);  in ata_sff_hsm_move()
1273 	struct ata_queued_cmd *qc;  in ata_sff_pio_task()  local
1281 	qc = ata_qc_from_tag(ap, link->active_tag);  in ata_sff_pio_task()
1282 	if (!qc) {  in ata_sff_pio_task()
1316 	poll_next = ata_sff_hsm_move(ap, qc, status, 1);  in ata_sff_pio_task()
1340 unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc)  in ata_sff_qc_issue()  argument
1342 	struct ata_port *ap = qc->ap;  in ata_sff_qc_issue()
1343 	struct ata_link *link = qc->dev->link;  in ata_sff_qc_issue()
1349 		qc->tf.flags |= ATA_TFLAG_POLLING;  in ata_sff_qc_issue()
1352 	ata_dev_select(ap, qc->dev->devno, 1, 0);  in ata_sff_qc_issue()
1355 	switch (qc->tf.protocol) {  in ata_sff_qc_issue()
1357 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1358 			ata_qc_set_polling(qc);  in ata_sff_qc_issue()
1360 		ata_tf_to_host(ap, &qc->tf);  in ata_sff_qc_issue()
1363 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1369 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1370 			ata_qc_set_polling(qc);  in ata_sff_qc_issue()
1372 		ata_tf_to_host(ap, &qc->tf);  in ata_sff_qc_issue()
1374 		if (qc->tf.flags & ATA_TFLAG_WRITE) {  in ata_sff_qc_issue()
1386 			if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1399 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1400 			ata_qc_set_polling(qc);  in ata_sff_qc_issue()
1402 		ata_tf_to_host(ap, &qc->tf);  in ata_sff_qc_issue()
1407 		if ((!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) ||  in ata_sff_qc_issue()
1408 		    (qc->tf.flags & ATA_TFLAG_POLLING))  in ata_sff_qc_issue()
1433 bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc)  in ata_sff_qc_fill_rtf()  argument
1435 	qc->ap->ops->sff_tf_read(qc->ap, &qc->result_tf);  in ata_sff_qc_fill_rtf()
1457 					struct ata_queued_cmd *qc,  in __ata_sff_port_intr()  argument
1463 		ap->print_id, qc->tf.protocol, ap->hsm_task_state);  in __ata_sff_port_intr()
1476 		if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))  in __ata_sff_port_intr()
1490 			qc->err_mask |= AC_ERR_HSM;  in __ata_sff_port_intr()
1500 	ata_sff_hsm_move(ap, qc, status, 0);  in __ata_sff_port_intr()
1518 unsigned int ata_sff_port_intr(struct ata_port *ap, struct ata_queued_cmd *qc)  in ata_sff_port_intr()  argument
1520 	return __ata_sff_port_intr(ap, qc, false);  in ata_sff_port_intr()
1540 		struct ata_queued_cmd *qc;  in __ata_sff_interrupt()  local
1542 		qc = ata_qc_from_tag(ap, ap->link.active_tag);  in __ata_sff_interrupt()
1543 		if (qc) {  in __ata_sff_interrupt()
1544 			if (!(qc->tf.flags & ATA_TFLAG_POLLING))  in __ata_sff_interrupt()
1545 				handled |= port_intr(ap, qc);  in __ata_sff_interrupt()
1632 	struct ata_queued_cmd *qc;  in ata_sff_lost_interrupt()  local
1635 	qc = ata_qc_from_tag(ap, ap->link.active_tag);  in ata_sff_lost_interrupt()
1637 	if (!qc || qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_lost_interrupt()
1651 	ata_sff_port_intr(ap, qc);  in ata_sff_lost_interrupt()
2092 void ata_sff_drain_fifo(struct ata_queued_cmd *qc)  in ata_sff_drain_fifo()  argument
2098 	if (qc == NULL || qc->dma_dir == DMA_TO_DEVICE)  in ata_sff_drain_fifo()
2101 	ap = qc->ap;  in ata_sff_drain_fifo()
2130 	struct ata_queued_cmd *qc;  in ata_sff_error_handler()  local
2133 	qc = __ata_qc_from_tag(ap, ap->link.active_tag);  in ata_sff_error_handler()
2134 	if (qc && !(qc->flags & ATA_QCFLAG_FAILED))  in ata_sff_error_handler()
2135 		qc = NULL;  in ata_sff_error_handler()
2147 		ap->ops->sff_drain_fifo(qc);  in ata_sff_error_handler()
2571 static void ata_bmdma_fill_sg(struct ata_queued_cmd *qc)  in ata_bmdma_fill_sg()  argument
2573 	struct ata_port *ap = qc->ap;  in ata_bmdma_fill_sg()
2579 	for_each_sg(qc->sg, sg, qc->n_elem, si) {  in ata_bmdma_fill_sg()
2622 static void ata_bmdma_fill_sg_dumb(struct ata_queued_cmd *qc)  in ata_bmdma_fill_sg_dumb()  argument
2624 	struct ata_port *ap = qc->ap;  in ata_bmdma_fill_sg_dumb()
2630 	for_each_sg(qc->sg, sg, qc->n_elem, si) {  in ata_bmdma_fill_sg_dumb()
2678 enum ata_completion_errors ata_bmdma_qc_prep(struct ata_queued_cmd *qc)  in ata_bmdma_qc_prep()  argument
2680 	if (!(qc->flags & ATA_QCFLAG_DMAMAP))  in ata_bmdma_qc_prep()
2683 	ata_bmdma_fill_sg(qc);  in ata_bmdma_qc_prep()
2698 enum ata_completion_errors ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc)  in ata_bmdma_dumb_qc_prep()  argument
2700 	if (!(qc->flags & ATA_QCFLAG_DMAMAP))  in ata_bmdma_dumb_qc_prep()
2703 	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()