drivers/ata/libata-sff.c

336  *	@tf: ATA taskfile register set
343 void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
346 	unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
348 	if (tf->ctl != ap->last_ctl) {
350 			iowrite8(tf->ctl, ioaddr->ctl_addr);
351 		ap->last_ctl = tf->ctl;
355 	if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
357 		iowrite8(tf->hob_feature, ioaddr->feature_addr);
358 		iowrite8(tf->hob_nsect, ioaddr->nsect_addr);
359 		iowrite8(tf->hob_lbal, ioaddr->lbal_addr);
360 		iowrite8(tf->hob_lbam, ioaddr->lbam_addr);
361 		iowrite8(tf->hob_lbah, ioaddr->lbah_addr);
365 		iowrite8(tf->feature, ioaddr->feature_addr);
366 		iowrite8(tf->nsect, ioaddr->nsect_addr);
367 		iowrite8(tf->lbal, ioaddr->lbal_addr);
368 		iowrite8(tf->lbam, ioaddr->lbam_addr);
369 		iowrite8(tf->lbah, ioaddr->lbah_addr);
372 	if (tf->flags & ATA_TFLAG_DEVICE)
373 		iowrite8(tf->device, ioaddr->device_addr);
382  *	@tf: ATA taskfile register set for storing input
385  *	into @tf. Assumes the device has a fully SFF compliant task file
392 void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
396 	tf->status = ata_sff_check_status(ap);
397 	tf->error = ioread8(ioaddr->error_addr);
398 	tf->nsect = ioread8(ioaddr->nsect_addr);
399 	tf->lbal = ioread8(ioaddr->lbal_addr);
400 	tf->lbam = ioread8(ioaddr->lbam_addr);
401 	tf->lbah = ioread8(ioaddr->lbah_addr);
402 	tf->device = ioread8(ioaddr->device_addr);
404 	if (tf->flags & ATA_TFLAG_LBA48) {
406 			iowrite8(tf->ctl | ATA_HOB, ioaddr->ctl_addr);
407 			tf->hob_feature = ioread8(ioaddr->error_addr);
408 			tf->hob_nsect = ioread8(ioaddr->nsect_addr);
409 			tf->hob_lbal = ioread8(ioaddr->lbal_addr);
410 			tf->hob_lbam = ioread8(ioaddr->lbam_addr);
411 			tf->hob_lbah = ioread8(ioaddr->lbah_addr);
412 			iowrite8(tf->ctl, ioaddr->ctl_addr);
413 			ap->last_ctl = tf->ctl;
423  *	@tf: ATA taskfile register set
431 void ata_sff_exec_command(struct ata_port *ap, const struct ata_taskfile *tf)
433 	iowrite8(tf->command, ap->ioaddr.command_addr);
441  *	@tf: ATA taskfile register set
452 				  const struct ata_taskfile *tf,
455 	trace_ata_tf_load(ap, tf);
456 	ap->ops->sff_tf_load(ap, tf);
457 	trace_ata_exec_command(ap, tf, tag);
458 	ap->ops->sff_exec_command(ap, tf);
581 	bool do_write = (qc->tf.flags & ATA_TFLAG_WRITE);
661 	if (is_multi_taskfile(&qc->tf)) {
698 	switch (qc->tf.protocol) {
709 		trace_ata_bmdma_start(ap, &qc->tf, qc->tag);
731 	int rw = (qc->tf.flags & ATA_TFLAG_WRITE) ? WRITE : READ;
804 	int i_write, do_write = (qc->tf.flags & ATA_TFLAG_WRITE) ? 1 : 0;
855 	if (qc->tf.flags & ATA_TFLAG_POLLING)
859 		if (qc->tf.protocol == ATA_PROT_PIO &&
860 		   (qc->tf.flags & ATA_TFLAG_WRITE))
863 		if (ata_is_atapi(qc->tf.protocol) &&
927 	 * in_wq is not equivalent to (qc->tf.flags & ATA_TFLAG_POLLING).
942 		poll_next = (qc->tf.flags & ATA_TFLAG_POLLING);
983 		if (qc->tf.protocol == ATA_PROT_PIO) {
1005 		if (qc->tf.protocol == ATAPI_PROT_PIO) {
1082 				if (!(qc->tf.flags & ATA_TFLAG_WRITE)) {
1115 			    (!(qc->tf.flags & ATA_TFLAG_WRITE))) {
1290 		qc->tf.flags |= ATA_TFLAG_POLLING;
1296 	switch (qc->tf.protocol) {
1298 		if (qc->tf.flags & ATA_TFLAG_POLLING)
1301 		ata_tf_to_host(ap, &qc->tf, qc->tag);
1304 		if (qc->tf.flags & ATA_TFLAG_POLLING)
1310 		if (qc->tf.flags & ATA_TFLAG_POLLING)
1313 		ata_tf_to_host(ap, &qc->tf, qc->tag);
1315 		if (qc->tf.flags & ATA_TFLAG_WRITE) {
1327 			if (qc->tf.flags & ATA_TFLAG_POLLING)
1340 		if (qc->tf.flags & ATA_TFLAG_POLLING)
1343 		ata_tf_to_host(ap, &qc->tf, qc->tag);
1349 		    (qc->tf.flags & ATA_TFLAG_POLLING))
1410 		 * need to check ata_is_atapi(qc->tf.protocol) again.
1480 			if (!(qc->tf.flags & ATA_TFLAG_POLLING))
1573 	if (!qc || qc->tf.flags & ATA_TFLAG_POLLING)
1749 	struct ata_taskfile tf;
1755 	memset(&tf, 0, sizeof(tf));
1757 	ap->ops->sff_tf_read(ap, &tf);
1758 	err = tf.error;
1774 	class = ata_port_classify(ap, &tf);
2653 	if (!ata_is_dma(qc->tf.protocol))
2660 	switch (qc->tf.protocol) {
2662 		WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING);
2664 		trace_ata_tf_load(ap, &qc->tf);
2665 		ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */
2666 		trace_ata_bmdma_setup(ap, &qc->tf, qc->tag);
2668 		trace_ata_bmdma_start(ap, &qc->tf, qc->tag);
2674 		WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING);
2676 		trace_ata_tf_load(ap, &qc->tf);
2677 		ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */
2678 		trace_ata_bmdma_setup(ap, &qc->tf, qc->tag);
2716 	if (ap->hsm_task_state == HSM_ST_LAST && ata_is_dma(qc->tf.protocol)) {
2726 		trace_ata_bmdma_stop(ap, &qc->tf, qc->tag);
2739 	if (unlikely(qc->err_mask) && ata_is_dma(qc->tf.protocol))
2791 	if (qc && ata_is_dma(qc->tf.protocol)) {
2807 		trace_ata_bmdma_stop(ap, &qc->tf, qc->tag);
2839 	if (ata_is_dma(qc->tf.protocol)) {
2841 		trace_ata_bmdma_stop(ap, &qc->tf, qc->tag);
2880 	unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
2895 	ap->ops->sff_exec_command(ap, &qc->tf);