<commit_before>/*
 *  Copyright (C) 2000-2002	   <NAME> <<EMAIL>>
 *  Copyright (C) 2000-2002	   <NAME> <<EMAIL>>
 *  Copyright (C) 2001-2002	   <NAME>
 *					IBM Storage Technology Division
 *  Copyright (C) 2003-2004, 2007  <NAME>
 *
 *  The big the bad and the ugly.
 */

#include <linux/types.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
#include <linux/scatterlist.h>

#include <asm/uaccess.h>
#include <asm/io.h>

void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd)
{
	ide_hwif_t *hwif = drive->hwif;
	const struct ide_tp_ops *tp_ops = hwif->tp_ops;

	/* Be sure we're looking at the low order bytes */
	tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);

	tp_ops->tf_read(drive, &cmd->tf, cmd->valid.in.tf);

	if (cmd->tf_flags & IDE_TFLAG_LBA48) {
		tp_ops->write_devctl(hwif, ATA_HOB | ATA_DEVCTL_OBS);

		tp_ops->tf_read(drive, &cmd->hob, cmd->valid.in.hob);
	}
}

void ide_tf_dump(const char *s, struct ide_cmd *cmd)
{
#ifdef DEBUG
	printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x "
		"lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n",
	       s, cmd->tf.feature, cmd->tf.nsect,
	       cmd->tf.lbal, cmd->tf.lbam, cmd->tf.lbah,
	       cmd->tf.device, cmd->tf.command);
	printk("%s: hob: nsect 0x%02x lbal 0x%02x lbam 0x%02x lbah 0x%02x\n",
	       s, cmd->hob.nsect, cmd->hob.lbal, cmd->hob.lbam, cmd->hob.lbah);
#endif
}

int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
{
	struct ide_cmd cmd;

	memset(&cmd, 0, sizeof(cmd));
	cmd.tf.nsect = 0x01;
	if (drive->media == ide_disk)
		cmd.tf.command = ATA_CMD_ID_ATA;
	else
		cmd.tf.command = ATA_CMD_ID_ATAPI;
	cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
	cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
	cmd.protocol = ATA_PROT_PIO;

	return ide_raw_taskfile(drive, &cmd, buf, 1);
}

static ide_startstop_t task_no_data_intr(ide_drive_t *);
static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *);
static ide_startstop_t task_pio_intr(ide_drive_t *);

ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
{
	ide_hwif_t *hwif = drive->hwif;
	struct ide_cmd *cmd = &hwif->cmd;
	struct ide_taskfile *tf = &cmd->tf;
	ide_handler_t *handler = NULL;
	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
	const struct ide_dma_ops *dma_ops = hwif->dma_ops;

	if (orig_cmd->protocol == ATA_PROT_PIO &&
	    (orig_cmd->tf_flags & IDE_TFLAG_MULTI_PIO) &&
	    drive->mult_count == 0) {
		printk(KERN_ERR "%s: multimode not set!\n", drive->name);
		return ide_stopped;
	}

	if (orig_cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
		orig_cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS;

	memcpy(cmd, orig_cmd, sizeof(*cmd));

	if ((cmd->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) {
		ide_tf_dump(drive->name, cmd);
		tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
		SELECT_MASK(drive, 0);

		if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) {
			u8 data[2] = { cmd->tf.data, cmd->hob.data };

			tp_ops->output_data(drive, cmd, data, 2);
		}

		if (cmd->valid.out.tf & IDE_VALID_DEVICE) {<commit_msg>ide: remove superfluous SELECT_MASK() call from do_rw_taskfile()<commit_after>/*
 *  Copyright (C) 2000-2002	   <NAME> <<EMAIL>>
 *  Copyright (C) 2000-2002	   <NAME> <<EMAIL>>
 *  Copyright (C) 2001-2002	   <NAME>
 *					IBM Storage Technology Division
 *  Copyright (C) 2003-2004, 2007  <NAME>
 *
 *  The big the bad and the ugly.
 */

#include <linux/types.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
#include <linux/scatterlist.h>

#include <asm/uaccess.h>
#include <asm/io.h>

void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd)
{
	ide_hwif_t *hwif = drive->hwif;
	const struct ide_tp_ops *tp_ops = hwif->tp_ops;

	/* Be sure we're looking at the low order bytes */
	tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);

	tp_ops->tf_read(drive, &cmd->tf, cmd->valid.in.tf);

	if (cmd->tf_flags & IDE_TFLAG_LBA48) {
		tp_ops->write_devctl(hwif, ATA_HOB | ATA_DEVCTL_OBS);

		tp_ops->tf_read(drive, &cmd->hob, cmd->valid.in.hob);
	}
}

void ide_tf_dump(const char *s, struct ide_cmd *cmd)
{
#ifdef DEBUG
	printk("%s: tf: feat 0x%02x nsect 0x%02x lbal 0x%02x "
		"lbam 0x%02x lbah 0x%02x dev 0x%02x cmd 0x%02x\n",
	       s, cmd->tf.feature, cmd->tf.nsect,
	       cmd->tf.lbal, cmd->tf.lbam, cmd->tf.lbah,
	       cmd->tf.device, cmd->tf.command);
	printk("%s: hob: nsect 0x%02x lbal 0x%02x lbam 0x%02x lbah 0x%02x\n",
	       s, cmd->hob.nsect, cmd->hob.lbal, cmd->hob.lbam, cmd->hob.lbah);
#endif
}

int taskfile_lib_get_identify (ide_drive_t *drive, u8 *buf)
{
	struct ide_cmd cmd;

	memset(&cmd, 0, sizeof(cmd));
	cmd.tf.nsect = 0x01;
	if (drive->media == ide_disk)
		cmd.tf.command = ATA_CMD_ID_ATA;
	else
		cmd.tf.command = ATA_CMD_ID_ATAPI;
	cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
	cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
	cmd.protocol = ATA_PROT_PIO;

	return ide_raw_taskfile(drive, &cmd, buf, 1);
}

static ide_startstop_t task_no_data_intr(ide_drive_t *);
static ide_startstop_t pre_task_out_intr(ide_drive_t *, struct ide_cmd *);
static ide_startstop_t task_pio_intr(ide_drive_t *);

ide_startstop_t do_rw_taskfile(ide_drive_t *drive, struct ide_cmd *orig_cmd)
{
	ide_hwif_t *hwif = drive->hwif;
	struct ide_cmd *cmd = &hwif->cmd;
	struct ide_taskfile *tf = &cmd->tf;
	ide_handler_t *handler = NULL;
	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
	const struct ide_dma_ops *dma_ops = hwif->dma_ops;

	if (orig_cmd->protocol == ATA_PROT_PIO &&
	    (orig_cmd->tf_flags & IDE_TFLAG_MULTI_PIO) &&
	    drive->mult_count == 0) {
		printk(KERN_ERR "%s: multimode not set!\n", drive->name);
		return ide_stopped;
	}

	if (orig_cmd->ftf_flags & IDE_FTFLAG_FLAGGED)
		orig_cmd->ftf_flags |= IDE_FTFLAG_SET_IN_FLAGS;

	memcpy(cmd, orig_cmd, sizeof(*cmd));

	if ((cmd->tf_flags & IDE_TFLAG_DMA_PIO_FALLBACK) == 0) {
		ide_tf_dump(drive->name, cmd);
		tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);

		if (cmd->ftf_flags & IDE_FTFLAG_OUT_DATA) {
			u8 data[2] = { cmd->tf.data, cmd->hob.data };

			tp_ops->output_data(drive, cmd, data, 2);
		}

		if (cmd->valid.out.tf & IDE_VALID_DEVICE) {
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