558 unsigned int ata_sff_data_xfer(struct ata_queued_cmd *qc, unsigned char *buf,  in ata_sff_data_xfer()  argument
561 	struct ata_port *ap = qc->dev->link->ap;  in ata_sff_data_xfer()
613 unsigned int ata_sff_data_xfer32(struct ata_queued_cmd *qc, unsigned char *buf,  in ata_sff_data_xfer32()  argument
616 	struct ata_device *dev = qc->dev;  in ata_sff_data_xfer32()
623 		return ata_sff_data_xfer(qc, buf, buflen, rw);  in ata_sff_data_xfer32()
669 static void ata_pio_sector(struct ata_queued_cmd *qc)  in ata_pio_sector()  argument
671 	int do_write = (qc->tf.flags & ATA_TFLAG_WRITE);  in ata_pio_sector()
672 	struct ata_port *ap = qc->ap;  in ata_pio_sector()
677 	if (qc->curbytes == qc->nbytes - qc->sect_size)  in ata_pio_sector()
680 	page = sg_page(qc->cursg);  in ata_pio_sector()
681 	offset = qc->cursg->offset + qc->cursg_ofs;  in ata_pio_sector()
687 	DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");  in ata_pio_sector()
691 	ap->ops->sff_data_xfer(qc, buf + offset, qc->sect_size, do_write);  in ata_pio_sector()
697 	qc->curbytes += qc->sect_size;  in ata_pio_sector()
698 	qc->cursg_ofs += qc->sect_size;  in ata_pio_sector()
700 	if (qc->cursg_ofs == qc->cursg->length) {  in ata_pio_sector()
701 		qc->cursg = sg_next(qc->cursg);  in ata_pio_sector()
702 		qc->cursg_ofs = 0;  in ata_pio_sector()
716 static void ata_pio_sectors(struct ata_queued_cmd *qc)  in ata_pio_sectors()  argument
718 	if (is_multi_taskfile(&qc->tf)) {  in ata_pio_sectors()
722 		WARN_ON_ONCE(qc->dev->multi_count == 0);  in ata_pio_sectors()
724 		nsect = min((qc->nbytes - qc->curbytes) / qc->sect_size,  in ata_pio_sectors()
725 			    qc->dev->multi_count);  in ata_pio_sectors()
727 			ata_pio_sector(qc);  in ata_pio_sectors()
729 		ata_pio_sector(qc);  in ata_pio_sectors()
731 	ata_sff_sync(qc->ap); /* flush */  in ata_pio_sectors()
745 static void atapi_send_cdb(struct ata_port *ap, struct ata_queued_cmd *qc)  in atapi_send_cdb()  argument
749 	WARN_ON_ONCE(qc->dev->cdb_len < 12);  in atapi_send_cdb()
751 	ap->ops->sff_data_xfer(qc, qc->cdb, qc->dev->cdb_len, 1);  in atapi_send_cdb()
755 	switch (qc->tf.protocol) {  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 	DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");  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()
888 	if (unlikely(__atapi_pio_bytes(qc, bytes)))  in atapi_pio_bytes()
898 	qc->err_mask |= AC_ERR_HSM;  in atapi_pio_bytes()
911 						struct ata_queued_cmd *qc)  in ata_hsm_ok_in_wq()  argument
913 	if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_hsm_ok_in_wq()
917 		if (qc->tf.protocol == ATA_PROT_PIO &&  in ata_hsm_ok_in_wq()
918 		   (qc->tf.flags & ATA_TFLAG_WRITE))  in ata_hsm_ok_in_wq()
921 		if (ata_is_atapi(qc->tf.protocol) &&  in ata_hsm_ok_in_wq()
922 		   !(qc->dev->flags & ATA_DFLAG_CDB_INTR))  in ata_hsm_ok_in_wq()
940 static void ata_hsm_qc_complete(struct ata_queued_cmd *qc, int in_wq)  in ata_hsm_qc_complete()  argument
942 	struct ata_port *ap = qc->ap;  in ata_hsm_qc_complete()
949 			qc = ata_qc_from_tag(ap, qc->tag);  in ata_hsm_qc_complete()
950 			if (qc) {  in ata_hsm_qc_complete()
951 				if (likely(!(qc->err_mask & AC_ERR_HSM))) {  in ata_hsm_qc_complete()
953 					ata_qc_complete(qc);  in ata_hsm_qc_complete()
958 			if (likely(!(qc->err_mask & AC_ERR_HSM)))  in ata_hsm_qc_complete()
959 				ata_qc_complete(qc);  in ata_hsm_qc_complete()
966 			ata_qc_complete(qc);  in ata_hsm_qc_complete()
968 			ata_qc_complete(qc);  in ata_hsm_qc_complete()
982 int ata_sff_hsm_move(struct ata_port *ap, struct ata_queued_cmd *qc,  in ata_sff_hsm_move()  argument
985 	struct ata_link *link = qc->dev->link;  in ata_sff_hsm_move()
991 	WARN_ON_ONCE((qc->flags & ATA_QCFLAG_ACTIVE) == 0);  in ata_sff_hsm_move()
997 	WARN_ON_ONCE(in_wq != ata_hsm_ok_in_wq(ap, qc));  in ata_sff_hsm_move()
1001 		ap->print_id, qc->tf.protocol, ap->hsm_task_state, status);  in ata_sff_hsm_move()
1011 		poll_next = (qc->tf.flags & ATA_TFLAG_POLLING);  in ata_sff_hsm_move()
1018 				qc->err_mask |= AC_ERR_DEV;  in ata_sff_hsm_move()
1023 				qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1042 			if (!(qc->dev->horkage & ATA_HORKAGE_STUCK_ERR)) {  in ata_sff_hsm_move()
1046 				qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1052 		if (qc->tf.protocol == ATA_PROT_PIO) {  in ata_sff_hsm_move()
1062 			ata_pio_sectors(qc);  in ata_sff_hsm_move()
1065 			atapi_send_cdb(ap, qc);  in ata_sff_hsm_move()
1074 		if (qc->tf.protocol == ATAPI_PROT_PIO) {  in ata_sff_hsm_move()
1094 				qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1099 			atapi_pio_bytes(qc);  in ata_sff_hsm_move()
1111 					qc->err_mask |= AC_ERR_DEV;  in ata_sff_hsm_move()
1117 					if (qc->dev->horkage &  in ata_sff_hsm_move()
1119 						qc->err_mask |=  in ata_sff_hsm_move()
1129 					qc->err_mask |= AC_ERR_HSM |  in ata_sff_hsm_move()
1149 				qc->err_mask |= AC_ERR_DEV;  in ata_sff_hsm_move()
1151 				if (!(qc->tf.flags & ATA_TFLAG_WRITE)) {  in ata_sff_hsm_move()
1152 					ata_pio_sectors(qc);  in ata_sff_hsm_move()
1160 					qc->err_mask |= AC_ERR_HSM;  in ata_sff_hsm_move()
1171 					qc->err_mask |= AC_ERR_NODEV_HINT;  in ata_sff_hsm_move()
1181 			ata_pio_sectors(qc);  in ata_sff_hsm_move()
1184 			    (!(qc->tf.flags & ATA_TFLAG_WRITE))) {  in ata_sff_hsm_move()
1196 			qc->err_mask |= __ac_err_mask(status);  in ata_sff_hsm_move()
1203 			ap->print_id, qc->dev->devno, status);  in ata_sff_hsm_move()
1205 		WARN_ON_ONCE(qc->err_mask & (AC_ERR_DEV | AC_ERR_HSM));  in ata_sff_hsm_move()
1210 		ata_hsm_qc_complete(qc, in_wq);  in ata_sff_hsm_move()
1219 		ata_hsm_qc_complete(qc, in_wq);  in ata_sff_hsm_move()
1287 	struct ata_queued_cmd *qc;  in ata_sff_pio_task()  local
1295 	qc = ata_qc_from_tag(ap, link->active_tag);  in ata_sff_pio_task()
1296 	if (!qc) {  in ata_sff_pio_task()
1330 	poll_next = ata_sff_hsm_move(ap, qc, status, 1);  in ata_sff_pio_task()
1354 unsigned int ata_sff_qc_issue(struct ata_queued_cmd *qc)  in ata_sff_qc_issue()  argument
1356 	struct ata_port *ap = qc->ap;  in ata_sff_qc_issue()
1357 	struct ata_link *link = qc->dev->link;  in ata_sff_qc_issue()
1363 		qc->tf.flags |= ATA_TFLAG_POLLING;  in ata_sff_qc_issue()
1366 	ata_dev_select(ap, qc->dev->devno, 1, 0);  in ata_sff_qc_issue()
1369 	switch (qc->tf.protocol) {  in ata_sff_qc_issue()
1371 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1372 			ata_qc_set_polling(qc);  in ata_sff_qc_issue()
1374 		ata_tf_to_host(ap, &qc->tf);  in ata_sff_qc_issue()
1377 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1383 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1384 			ata_qc_set_polling(qc);  in ata_sff_qc_issue()
1386 		ata_tf_to_host(ap, &qc->tf);  in ata_sff_qc_issue()
1388 		if (qc->tf.flags & ATA_TFLAG_WRITE) {  in ata_sff_qc_issue()
1400 			if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1413 		if (qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_qc_issue()
1414 			ata_qc_set_polling(qc);  in ata_sff_qc_issue()
1416 		ata_tf_to_host(ap, &qc->tf);  in ata_sff_qc_issue()
1421 		if ((!(qc->dev->flags & ATA_DFLAG_CDB_INTR)) ||  in ata_sff_qc_issue()
1422 		    (qc->tf.flags & ATA_TFLAG_POLLING))  in ata_sff_qc_issue()
1447 bool ata_sff_qc_fill_rtf(struct ata_queued_cmd *qc)  in ata_sff_qc_fill_rtf()  argument
1449 	qc->ap->ops->sff_tf_read(qc->ap, &qc->result_tf);  in ata_sff_qc_fill_rtf()
1471 					struct ata_queued_cmd *qc,  in __ata_sff_port_intr()  argument
1477 		ap->print_id, qc->tf.protocol, ap->hsm_task_state);  in __ata_sff_port_intr()
1490 		if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))  in __ata_sff_port_intr()
1504 			qc->err_mask |= AC_ERR_HSM;  in __ata_sff_port_intr()
1514 	ata_sff_hsm_move(ap, qc, status, 0);  in __ata_sff_port_intr()
1532 unsigned int ata_sff_port_intr(struct ata_port *ap, struct ata_queued_cmd *qc)  in ata_sff_port_intr()  argument
1534 	return __ata_sff_port_intr(ap, qc, false);  in ata_sff_port_intr()
1554 		struct ata_queued_cmd *qc;  in __ata_sff_interrupt()  local
1556 		qc = ata_qc_from_tag(ap, ap->link.active_tag);  in __ata_sff_interrupt()
1557 		if (qc) {  in __ata_sff_interrupt()
1558 			if (!(qc->tf.flags & ATA_TFLAG_POLLING))  in __ata_sff_interrupt()
1559 				handled |= port_intr(ap, qc);  in __ata_sff_interrupt()
1646 	struct ata_queued_cmd *qc;  in ata_sff_lost_interrupt()  local
1649 	qc = ata_qc_from_tag(ap, ap->link.active_tag);  in ata_sff_lost_interrupt()
1651 	if (!qc || qc->tf.flags & ATA_TFLAG_POLLING)  in ata_sff_lost_interrupt()
1665 	ata_sff_port_intr(ap, qc);  in ata_sff_lost_interrupt()
2106 void ata_sff_drain_fifo(struct ata_queued_cmd *qc)  in ata_sff_drain_fifo()  argument
2112 	if (qc == NULL || qc->dma_dir == DMA_TO_DEVICE)  in ata_sff_drain_fifo()
2115 	ap = qc->ap;  in ata_sff_drain_fifo()
2144 	struct ata_queued_cmd *qc;  in ata_sff_error_handler()  local
2147 	qc = __ata_qc_from_tag(ap, ap->link.active_tag);  in ata_sff_error_handler()
2148 	if (qc && !(qc->flags & ATA_QCFLAG_FAILED))  in ata_sff_error_handler()
2149 		qc = NULL;  in ata_sff_error_handler()
2161 		ap->ops->sff_drain_fifo(qc);  in ata_sff_error_handler()
2585 static void ata_bmdma_fill_sg(struct ata_queued_cmd *qc)  in ata_bmdma_fill_sg()  argument
2587 	struct ata_port *ap = qc->ap;  in ata_bmdma_fill_sg()
2593 	for_each_sg(qc->sg, sg, qc->n_elem, si) {  in ata_bmdma_fill_sg()
2636 static void ata_bmdma_fill_sg_dumb(struct ata_queued_cmd *qc)  in ata_bmdma_fill_sg_dumb()  argument
2638 	struct ata_port *ap = qc->ap;  in ata_bmdma_fill_sg_dumb()
2644 	for_each_sg(qc->sg, sg, qc->n_elem, si) {  in ata_bmdma_fill_sg_dumb()
2692 void ata_bmdma_qc_prep(struct ata_queued_cmd *qc)  in ata_bmdma_qc_prep()  argument
2694 	if (!(qc->flags & ATA_QCFLAG_DMAMAP))  in ata_bmdma_qc_prep()
2697 	ata_bmdma_fill_sg(qc);  in ata_bmdma_qc_prep()
2710 void ata_bmdma_dumb_qc_prep(struct ata_queued_cmd *qc)  in ata_bmdma_dumb_qc_prep()  argument
2712 	if (!(qc->flags & ATA_QCFLAG_DMAMAP))  in ata_bmdma_dumb_qc_prep()
2715 	ata_bmdma_fill_sg_dumb(qc);  in ata_bmdma_dumb_qc_prep()
2733 unsigned int ata_bmdma_qc_issue(struct ata_queued_cmd *qc)  in ata_bmdma_qc_issue()  argument
2735 	struct ata_port *ap = qc->ap;  in ata_bmdma_qc_issue()
2736 	struct ata_link *link = qc->dev->link;  in ata_bmdma_qc_issue()
2739 	if (!ata_is_dma(qc->tf.protocol))  in ata_bmdma_qc_issue()
2740 		return ata_sff_qc_issue(qc);  in ata_bmdma_qc_issue()
2743 	ata_dev_select(ap, qc->dev->devno, 1, 0);  in ata_bmdma_qc_issue()
2746 	switch (qc->tf.protocol) {  in ata_bmdma_qc_issue()
2748 		WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING);  in ata_bmdma_qc_issue()
2750 		ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */  in ata_bmdma_qc_issue()
2751 		ap->ops->bmdma_setup(qc);	    /* set up bmdma */  in ata_bmdma_qc_issue()
2752 		ap->ops->bmdma_start(qc);	    /* initiate bmdma */  in ata_bmdma_qc_issue()
2757 		WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING);  in ata_bmdma_qc_issue()
2759 		ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */  in ata_bmdma_qc_issue()
2760 		ap->ops->bmdma_setup(qc);	    /* set up bmdma */  in ata_bmdma_qc_issue()
2764 		if (!(qc->dev->flags & ATA_DFLAG_CDB_INTR))  in ata_bmdma_qc_issue()
2790 unsigned int ata_bmdma_port_intr(struct ata_port *ap, struct ata_queued_cmd *qc)  in ata_bmdma_port_intr()  argument
2797 	if (ap->hsm_task_state == HSM_ST_LAST && ata_is_dma(qc->tf.protocol)) {  in ata_bmdma_port_intr()
2807 		ap->ops->bmdma_stop(qc);  in ata_bmdma_port_intr()
2812 			qc->err_mask |= AC_ERR_HOST_BUS;  in ata_bmdma_port_intr()
2817 	handled = __ata_sff_port_intr(ap, qc, bmdma_stopped);  in ata_bmdma_port_intr()
2819 	if (unlikely(qc->err_mask) && ata_is_dma(qc->tf.protocol))  in ata_bmdma_port_intr()
2860 	struct ata_queued_cmd *qc;  in ata_bmdma_error_handler()  local
2864 	qc = __ata_qc_from_tag(ap, ap->link.active_tag);  in ata_bmdma_error_handler()
2865 	if (qc && !(qc->flags & ATA_QCFLAG_FAILED))  in ata_bmdma_error_handler()
2866 		qc = NULL;  in ata_bmdma_error_handler()
2871 	if (qc && ata_is_dma(qc->tf.protocol)) {  in ata_bmdma_error_handler()
2881 		if (qc->err_mask == AC_ERR_TIMEOUT && (host_stat & ATA_DMA_ERR)) {  in ata_bmdma_error_handler()
2882 			qc->err_mask = AC_ERR_HOST_BUS;  in ata_bmdma_error_handler()
2886 		ap->ops->bmdma_stop(qc);  in ata_bmdma_error_handler()
2912 void ata_bmdma_post_internal_cmd(struct ata_queued_cmd *qc)  in ata_bmdma_post_internal_cmd()  argument
2914 	struct ata_port *ap = qc->ap;  in ata_bmdma_post_internal_cmd()
2917 	if (ata_is_dma(qc->tf.protocol)) {  in ata_bmdma_post_internal_cmd()
2919 		ap->ops->bmdma_stop(qc);  in ata_bmdma_post_internal_cmd()
2954 void ata_bmdma_setup(struct ata_queued_cmd *qc)  in ata_bmdma_setup()  argument
2956 	struct ata_port *ap = qc->ap;  in ata_bmdma_setup()
2957 	unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);  in ata_bmdma_setup()
2972 	ap->ops->sff_exec_command(ap, &qc->tf);  in ata_bmdma_setup()
2983 void ata_bmdma_start(struct ata_queued_cmd *qc)  in ata_bmdma_start()  argument
2985 	struct ata_port *ap = qc->ap;  in ata_bmdma_start()
3020 void ata_bmdma_stop(struct ata_queued_cmd *qc)  in ata_bmdma_stop()  argument
3022 	struct ata_port *ap = qc->ap;  in ata_bmdma_stop()