drivers/ata/libata-sff.c

335  *	@tf: ATA taskfile register set
342 void ata_sff_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
345 	unsigned int is_addr = tf->flags & ATA_TFLAG_ISADDR;
347 	if (tf->ctl != ap->last_ctl) {
349 			iowrite8(tf->ctl, ioaddr->ctl_addr);
350 		ap->last_ctl = tf->ctl;
354 	if (is_addr && (tf->flags & ATA_TFLAG_LBA48)) {
356 		iowrite8(tf->hob_feature, ioaddr->feature_addr);
357 		iowrite8(tf->hob_nsect, ioaddr->nsect_addr);
358 		iowrite8(tf->hob_lbal, ioaddr->lbal_addr);
359 		iowrite8(tf->hob_lbam, ioaddr->lbam_addr);
360 		iowrite8(tf->hob_lbah, ioaddr->lbah_addr);
364 		iowrite8(tf->feature, ioaddr->feature_addr);
365 		iowrite8(tf->nsect, ioaddr->nsect_addr);
366 		iowrite8(tf->lbal, ioaddr->lbal_addr);
367 		iowrite8(tf->lbam, ioaddr->lbam_addr);
368 		iowrite8(tf->lbah, ioaddr->lbah_addr);
371 	if (tf->flags & ATA_TFLAG_DEVICE)
372 		iowrite8(tf->device, ioaddr->device_addr);
381  *	@tf: ATA taskfile register set for storing input
384  *	into @tf. Assumes the device has a fully SFF compliant task file
391 void ata_sff_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
395 	tf->status = ata_sff_check_status(ap);
396 	tf->error = ioread8(ioaddr->error_addr);
397 	tf->nsect = ioread8(ioaddr->nsect_addr);
398 	tf->lbal = ioread8(ioaddr->lbal_addr);
399 	tf->lbam = ioread8(ioaddr->lbam_addr);
400 	tf->lbah = ioread8(ioaddr->lbah_addr);
401 	tf->device = ioread8(ioaddr->device_addr);
403 	if (tf->flags & ATA_TFLAG_LBA48) {
405 			iowrite8(tf->ctl | ATA_HOB, ioaddr->ctl_addr);
406 			tf->hob_feature = ioread8(ioaddr->error_addr);
407 			tf->hob_nsect = ioread8(ioaddr->nsect_addr);
408 			tf->hob_lbal = ioread8(ioaddr->lbal_addr);
409 			tf->hob_lbam = ioread8(ioaddr->lbam_addr);
410 			tf->hob_lbah = ioread8(ioaddr->lbah_addr);
411 			iowrite8(tf->ctl, ioaddr->ctl_addr);
412 			ap->last_ctl = tf->ctl;
422  *	@tf: ATA taskfile register set
430 void ata_sff_exec_command(struct ata_port *ap, const struct ata_taskfile *tf)
432 	iowrite8(tf->command, ap->ioaddr.command_addr);
440  *	@tf: ATA taskfile register set
451 				  const struct ata_taskfile *tf,
454 	trace_ata_tf_load(ap, tf);
455 	ap->ops->sff_tf_load(ap, tf);
456 	trace_ata_exec_command(ap, tf, tag);
457 	ap->ops->sff_exec_command(ap, tf);
580 	bool do_write = (qc->tf.flags & ATA_TFLAG_WRITE);
662 	if (is_multi_taskfile(&qc->tf)) {
699 	switch (qc->tf.protocol) {
710 		trace_ata_bmdma_start(ap, &qc->tf, qc->tag);
732 	int rw = (qc->tf.flags & ATA_TFLAG_WRITE) ? WRITE : READ;
805 	int i_write, do_write = (qc->tf.flags & ATA_TFLAG_WRITE) ? 1 : 0;
856 	if (qc->tf.flags & ATA_TFLAG_POLLING)
860 		if (qc->tf.protocol == ATA_PROT_PIO &&
861 		   (qc->tf.flags & ATA_TFLAG_WRITE))
864 		if (ata_is_atapi(qc->tf.protocol) &&
928 	 * in_wq is not equivalent to (qc->tf.flags & ATA_TFLAG_POLLING).
943 		poll_next = (qc->tf.flags & ATA_TFLAG_POLLING);
984 		if (qc->tf.protocol == ATA_PROT_PIO) {
1006 		if (qc->tf.protocol == ATAPI_PROT_PIO) {
1083 				if (!(qc->tf.flags & ATA_TFLAG_WRITE)) {
1116 			    (!(qc->tf.flags & ATA_TFLAG_WRITE))) {
1291 		qc->tf.flags |= ATA_TFLAG_POLLING;
1297 	switch (qc->tf.protocol) {
1299 		if (qc->tf.flags & ATA_TFLAG_POLLING)
1302 		ata_tf_to_host(ap, &qc->tf, qc->tag);
1305 		if (qc->tf.flags & ATA_TFLAG_POLLING)
1311 		if (qc->tf.flags & ATA_TFLAG_POLLING)
1314 		ata_tf_to_host(ap, &qc->tf, qc->tag);
1316 		if (qc->tf.flags & ATA_TFLAG_WRITE) {
1328 			if (qc->tf.flags & ATA_TFLAG_POLLING)
1341 		if (qc->tf.flags & ATA_TFLAG_POLLING)
1344 		ata_tf_to_host(ap, &qc->tf, qc->tag);
1350 		    (qc->tf.flags & ATA_TFLAG_POLLING))
1411 		 * need to check ata_is_atapi(qc->tf.protocol) again.
1481 			if (!(qc->tf.flags & ATA_TFLAG_POLLING))
1574 	if (!qc || qc->tf.flags & ATA_TFLAG_POLLING)
1750 	struct ata_taskfile tf;
1756 	memset(&tf, 0, sizeof(tf));
1758 	ap->ops->sff_tf_read(ap, &tf);
1759 	err = tf.error;
1775 	class = ata_port_classify(ap, &tf);
2646 	if (!ata_is_dma(qc->tf.protocol))
2653 	switch (qc->tf.protocol) {
2655 		WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING);
2657 		trace_ata_tf_load(ap, &qc->tf);
2658 		ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */
2659 		trace_ata_bmdma_setup(ap, &qc->tf, qc->tag);
2661 		trace_ata_bmdma_start(ap, &qc->tf, qc->tag);
2667 		WARN_ON_ONCE(qc->tf.flags & ATA_TFLAG_POLLING);
2669 		trace_ata_tf_load(ap, &qc->tf);
2670 		ap->ops->sff_tf_load(ap, &qc->tf);  /* load tf registers */
2671 		trace_ata_bmdma_setup(ap, &qc->tf, qc->tag);
2709 	if (ap->hsm_task_state == HSM_ST_LAST && ata_is_dma(qc->tf.protocol)) {
2719 		trace_ata_bmdma_stop(ap, &qc->tf, qc->tag);
2732 	if (unlikely(qc->err_mask) && ata_is_dma(qc->tf.protocol))
2784 	if (qc && ata_is_dma(qc->tf.protocol)) {
2800 		trace_ata_bmdma_stop(ap, &qc->tf, qc->tag);
2832 	if (ata_is_dma(qc->tf.protocol)) {
2834 		trace_ata_bmdma_stop(ap, &qc->tf, qc->tag);
2873 	unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
2888 	ap->ops->sff_exec_command(ap, &qc->tf);