arch/arm/configs/rpc_defconfig


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CONFIG_EXPERIMENTAL=y
# CONFIG_LOCALVERSION_AUTO is not set
CONFIG_SYSVIPC=y
CONFIG_LOG_BUF_SHIFT=14
CONFIG_BLK_DEV_INITRD=y
CONFIG_SLAB=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
# CONFIG_BLK_DEV_BSG is not set
CONFIG_ARCH_RPC=y
CONFIG_CPU_ARM610=y
CONFIG_CPU_ARM710=y
CONFIG_CPU_SA110=y
CONFIG_ZBOOT_ROM_TEXT=0x0
CONFIG_ZBOOT_ROM_BSS=0x0
CONFIG_FPE_NWFPE=y
CONFIG_BINFMT_AOUT=y
CONFIG_NET=y
CONFIG_PACKET=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET_XFRM_MODE_TUNNEL is not set
# CONFIG_INET_XFRM_MODE_BEET is not set
# CONFIG_INET6_XFRM_MODE_TRANSPORT is not set
# CONFIG_INET6_XFRM_MODE_TUNNEL is not set
# CONFIG_INET6_XFRM_MODE_BEET is not set
CONFIG_PARPORT=y
CONFIG_PARPORT_PC=y
CONFIG_PARPORT_PC_FIFO=y
CONFIG_BLK_DEV_FD=y
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_SD=y
CONFIG_CHR_DEV_ST=m
CONFIG_BLK_DEV_SR=y
CONFIG_BLK_DEV_SR_VENDOR=y
CONFIG_CHR_DEV_SG=y
CONFIG_SCSI_CONSTANTS=y
CONFIG_SCSI_LOGGING=y
CONFIG_SCSI_ARXESCSI=m
CONFIG_SCSI_CUMANA_2=m
CONFIG_SCSI_EESOXSCSI=m
CONFIG_SCSI_POWERTECSCSI=y
CONFIG_SCSI_CUMANA_1=m
CONFIG_SCSI_OAK1=m
CONFIG_ATA=y
CONFIG_PATA_ICSIDE=y
CONFIG_PATA_PLATFORM=y
CONFIG_NETDEVICES=y
CONFIG_NET_ETHERNET=y
CONFIG_ARM_ETHER1=y
CONFIG_ARM_ETHER3=y
CONFIG_ARM_ETHERH=y
# CONFIG_NETDEV_1000 is not set
# CONFIG_NETDEV_10000 is not set
CONFIG_PPP=m
CONFIG_PPPOE=m
CONFIG_INPUT_EVDEV=y
# CONFIG_MOUSE_PS2 is not set
CONFIG_MOUSE_RISCPC=y
# CONFIG_SERIO_SERPORT is not set
CONFIG_SERIAL_8250=y
CONFIG_SERIAL_8250_CONSOLE=y
CONFIG_SERIAL_8250_NR_UARTS=16
CONFIG_SERIAL_8250_RUNTIME_UARTS=8
CONFIG_SERIAL_8250_ACORN=y
CONFIG_LEGACY_PTY_COUNT=64
CONFIG_PRINTER=m
# CONFIG_HW_RANDOM is not set
CONFIG_I2C=y
CONFIG_I2C_CHARDEV=y
# CONFIG_HWMON is not set
CONFIG_FB=y
CONFIG_FB_ACORN=y
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FONTS=y
CONFIG_FONT_8x16=y
CONFIG_FONT_ACORN_8x8=y
CONFIG_LOGO=y
CONFIG_SOUND=m
CONFIG_SOUND_PRIME=m
CONFIG_SOUND_OSS=m
CONFIG_SOUND_VIDC=m
# CONFIG_HID_SUPPORT is not set
# CONFIG_USB_SUPPORT is not set
CONFIG_RTC_CLASS=y
CONFIG_RTC_DRV_PCF8583=y
CONFIG_EXT2_FS=y
CONFIG_EXT3_FS=y
CONFIG_INOTIFY=y
CONFIG_AUTOFS4_FS=m
CONFIG_ISO9660_FS=y
CONFIG_JOLIET=y
CONFIG_MSDOS_FS=m
CONFIG_VFAT_FS=m
CONFIG_ADFS_FS=y
CONFIG_NFS_FS=y
CONFIG_PARTITION_ADVANCED=y
# CONFIG_ACORN_PARTITION_CUMANA is not set
# CONFIG_ACORN_PARTITION_EESOX is not set
CONFIG_BSD_DISKLABEL=y
CONFIG_NLS_CODEPAGE_437=m
CONFIG_NLS_CODEPAGE_737=m
CONFIG_NLS_CODEPAGE_775=m
CONFIG_NLS_CODEPAGE_850=m
CONFIG_NLS_CODEPAGE_852=m
CONFIG_NLS_CODEPAGE_855=m
CONFIG_NLS_CODEPAGE_857=m
CONFIG_NLS_CODEPAGE_860=m
CONFIG_NLS_CODEPAGE_861=m
CONFIG_NLS_CODEPAGE_862=m
CONFIG_NLS_CODEPAGE_863=m
CONFIG_NLS_CODEPAGE_864=m
CONFIG_NLS_CODEPAGE_865=m
CONFIG_NLS_CODEPAGE_866=m
CONFIG_NLS_CODEPAGE_869=m
CONFIG_NLS_CODEPAGE_874=m
CONFIG_NLS_ISO8859_8=m
CONFIG_NLS_ASCII=y
CONFIG_NLS_ISO8859_1=m
CONFIG_NLS_ISO8859_2=m
CONFIG_NLS_ISO8859_3=m
CONFIG_NLS_ISO8859_4=m
CONFIG_NLS_ISO8859_5=m
CONFIG_NLS_ISO8859_6=m
CONFIG_NLS_ISO8859_7=m
CONFIG_NLS_ISO8859_9=m
CONFIG_NLS_KOI8_R=m
CONFIG_MAGIC_SYSRQ=y
CONFIG_DEBUG_KERNEL=y
CONFIG_DEBUG_USER=y
CONFIG_DEBUG_ERRORS=y
CONFIG_DEBUG_LL=y
/*
 *	IDE I/O functions
 *
 *	Basic PIO and command management functionality.
 *
 * This code was split off from ide.c. See ide.c for history and original
 * copyrights.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * For the avoidance of doubt the "preferred form" of this code is one which
 * is in an open non patent encumbered format. Where cryptographic key signing
 * forms part of the process of creating an executable the information
 * including keys needed to generate an equivalently functional executable
 * are deemed to be part of the source code.
 */
 
 
#include <linux/module.h>
#include <linux/types.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/major.h>
#include <linux/errno.h>
#include <linux/genhd.h>
#include <linux/blkpg.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/ide.h>
#include <linux/completion.h>
#include <linux/reboot.h>
#include <linux/cdrom.h>
#include <linux/seq_file.h>
#include <linux/device.h>
#include <linux/kmod.h>
#include <linux/scatterlist.h>
#include <linux/bitops.h>

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

static int __ide_end_request(ide_drive_t *drive, struct request *rq,
			     int uptodate, unsigned int nr_bytes, int dequeue)
{
	int ret = 1;
	int error = 0;

	if (uptodate <= 0)
		error = uptodate ? uptodate : -EIO;

	/*
	 * if failfast is set on a request, override number of sectors and
	 * complete the whole request right now
	 */
	if (blk_noretry_request(rq) && error)
		nr_bytes = rq->hard_nr_sectors << 9;

	if (!blk_fs_request(rq) && error && !rq->errors)
		rq->errors = -EIO;

	/*
	 * decide whether to reenable DMA -- 3 is a random magic for now,
	 * if we DMA timeout more than 3 times, just stay in PIO
	 */
	if (drive->state == DMA_PIO_RETRY && drive->retry_pio <= 3) {
		drive->state = 0;
		ide_dma_on(drive);
	}

	if (!__blk_end_request(rq, error, nr_bytes)) {
		if (dequeue)
			HWGROUP(drive)->rq = NULL;
		ret = 0;
	}

	return ret;
}

/**
 *	ide_end_request		-	complete an IDE I/O
 *	@drive: IDE device for the I/O
 *	@uptodate:
 *	@nr_sectors: number of sectors completed
 *
 *	This is our end_request wrapper function. We complete the I/O
 *	update random number input and dequeue the request, which if
 *	it was tagged may be out of order.
 */

int ide_end_request (ide_drive_t *drive, int uptodate, int nr_sectors)
{
	unsigned int nr_bytes = nr_sectors << 9;
	struct request *rq;
	unsigned long flags;
	int ret = 1;

	/*
	 * room for locking improvements here, the calls below don't
	 * need the queue lock held at all
	 */
	spin_lock_irqsave(&ide_lock, flags);
	rq = HWGROUP(drive)->rq;

	if (!nr_bytes) {
		if (blk_pc_request(rq))
			nr_bytes = rq->data_len;
		else
			nr_bytes = rq->hard_cur_sectors << 9;
	}

	ret = __ide_end_request(drive, rq, uptodate, nr_bytes, 1);

	spin_unlock_irqrestore(&ide_lock, flags);
	return ret;
}
EXPORT_SYMBOL(ide_end_request);

/*
 * Power Management state machine. This one is rather trivial for now,
 * we should probably add more, like switching back to PIO on suspend
 * to help some BIOSes, re-do the door locking on resume, etc...
 */

enum {
	ide_pm_flush_cache	= ide_pm_state_start_suspend,
	idedisk_pm_standby,

	idedisk_pm_restore_pio	= ide_pm_state_start_resume,
	idedisk_pm_idle,
	ide_pm_restore_dma,
};

static void ide_complete_power_step(ide_drive_t *drive, struct request *rq, u8 stat, u8 error)
{
	struct request_pm_state *pm = rq->data;

	if (drive->media != ide_disk)
		return;

	switch (pm->pm_step) {
	case ide_pm_flush_cache:	/* Suspend step 1 (flush cache) complete */
		if (pm->pm_state == PM_EVENT_FREEZE)
			pm->pm_step = ide_pm_state_completed;
		else
			pm->pm_step = idedisk_pm_standby;
		break;
	case idedisk_pm_standby:	/* Suspend step 2 (standby) complete */
		pm->pm_step = ide_pm_state_completed;
		break;
	case idedisk_pm_restore_pio:	/* Resume step 1 complete */
		pm->pm_step = idedisk_pm_idle;
		break;
	case idedisk_pm_idle:		/* Resume step 2 (idle) complete */
		pm->pm_step = ide_pm_restore_dma;
		break;
	}
}

static ide_startstop_t ide_start_power_step(ide_drive_t *drive, struct request *rq)
{
	struct request_pm_state *pm = rq->data;
	ide_task_t *args = rq->special;

	memset(args, 0, sizeof(*args));

	switch (pm->pm_step) {
	case ide_pm_flush_cache:	/* Suspend step 1 (flush cache) */
		if (drive->media != ide_disk)
			break;
		/* Not supported? Switch to next step now. */
		if (!drive->wcache || !ide_id_has_flush_cache(drive->id)) {
			ide_complete_power_step(drive, rq, 0, 0);
			return ide_stopped;
		}
		if (ide_id_has_flush_cache_ext(drive->id))
			args->tf.command = WIN_FLUSH_CACHE_EXT;
		else
			args->tf.command = WIN_FLUSH_CACHE;
		goto out_do_tf;

	case idedisk_pm_standby:	/* Suspend step 2 (standby) */
		args->tf.command = WIN_STANDBYNOW1;
		goto out_do_tf;

	case idedisk_pm_restore_pio:	/* Resume step 1 (restore PIO) */
		ide_set_max_pio(drive);
		/*
		 * skip idedisk_pm_idle for ATAPI devices
		 */
		if (drive->media != ide_disk)
			pm->pm_step = ide_pm_restore_dma;
		else
			ide_complete_power_step(drive, rq, 0, 0);
		return ide_stopped;

	case idedisk_pm_idle:		/* Resume step 2 (idle) */
		args->tf.command = WIN_IDLEIMMEDIATE;
		goto out_do_tf;

	case ide_pm_restore_dma:	/* Resume step 3 (restore DMA) */
		/*
		 * Right now, all we do is call ide_set_dma(drive),
		 * we could be smarter and check for current xfer_speed
		 * in struct drive etc...
		 */
		if (drive->hwif->dma_ops == NULL)
			break;
		/*
		 * TODO: respect ->using_dma setting
		 */
		ide_set_dma(drive);
		break;
	}
	pm->pm_step = ide_pm_state_completed;
	return ide_stopped;

out_do_tf:
	args->tf_flags	 = IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
	args->data_phase = TASKFILE_NO_DATA;
	return do_rw_taskfile(drive, args);
}

/**
 *	ide_end_dequeued_request	-	complete an IDE I/O
 *	@drive: IDE device for the I/O
 *	@uptodate:
 *	@nr_sectors: number of sectors completed
 *
 *	Complete an I/O that is no longer on the request queue. This
 *	typically occurs when we pull the request and issue a REQUEST_SENSE.
 *	We must still finish the old request but we must not tamper with the
 *	queue in the meantime.
 *
 *	NOTE: This path does not handle barrier, but barrier is not supported
 *	on ide-cd anyway.
 */

int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
			     int uptodate, int nr_sectors)
{
	unsigned long flags;
	int ret;

	spin_lock_irqsave(&ide_lock, flags);
	BUG_ON(!blk_rq_started(rq));
	ret = __ide_end_request(drive, rq, uptodate, nr_sectors << 9, 0);
	spin_unlock_irqrestore(&ide_lock, flags);

	return ret;
}
EXPORT_SYMBOL_GPL(ide_end_dequeued_request);


/**
 *	ide_complete_pm_request - end the current Power Management request
 *	@drive: target drive
 *	@rq: request
 *
 *	This function cleans up the current PM request and stops the queue
 *	if necessary.
 */
static void ide_complete_pm_request (ide_drive_t *drive, struct request *rq)
{
	unsigned long flags;

#ifdef DEBUG_PM
	printk("%s: completing PM request, %s\n", drive->name,
	       blk_pm_suspend_request(rq) ? "suspend" : "resume");
#endif
	spin_lock_irqsave(&ide_lock, flags);
	if (blk_pm_suspend_request(rq)) {
		blk_stop_queue(drive->queue);
	} else {
		drive->blocked = 0;
		blk_start_queue(drive->queue);
	}
	HWGROUP(drive)->rq = NULL;
	if (__blk_end_request(rq, 0, 0))
		BUG();
	spin_unlock_irqrestore(&ide_lock, flags);
}

/**
 *	ide_end_drive_cmd	-	end an explicit drive command
 *	@drive: command 
 *	@stat: status bits
 *	@err: error bits
 *
 *	Clean up after success/failure of an explicit drive command.
 *	These get thrown onto the queue so they are synchronized with
 *	real I/O operations on the drive.
 *
 *	In LBA48 mode we have to read the register set twice to get
 *	all the extra information out.
 */
 
void ide_end_drive_cmd (ide_drive_t *drive, u8 stat, u8 err)
{
	unsigned long flags;
	struct request *rq;

	spin_lock_irqsave(&ide_lock, flags);
	rq = HWGROUP(drive)->rq;
	spin_unlock_irqrestore(&ide_lock, flags);

	if (rq->cmd_type == REQ_TYPE_ATA_TASKFILE) {
		ide_task_t *task = (ide_task_t *)rq->special;

		if (rq->errors == 0)
			rq->errors = !OK_STAT(stat, READY_STAT, BAD_STAT);

		if (task) {
			struct ide_taskfile *tf = &task->tf;

			tf->error = err;
			tf->status = stat;

			drive->hwif->tf_read(drive, task);

			if (task->tf_flags & IDE_TFLAG_DYN)
				kfree(task);
		}
	} else if (blk_pm_request(rq)) {
		struct request_pm_state *pm = rq->data;
#ifdef DEBUG_PM
		printk("%s: complete_power_step(step: %d, stat: %x, err: %x)\n",
			drive->name, rq->pm->pm_step, stat, err);
#endif
		ide_complete_power_step(drive, rq, stat, err);
		if (pm->pm_step == ide_pm_state_completed)
			ide_complete_pm_request(drive, rq);
		return;
	}

	spin_lock_irqsave(&ide_lock, flags);
	HWGROUP(drive)->rq = NULL;
	rq->errors = err;
	if (unlikely(__blk_end_request(rq, (rq->errors ? -EIO : 0),
				       blk_rq_bytes(rq))))
		BUG();
	spin_unlock_irqrestore(&ide_lock, flags);
}

EXPORT_SYMBOL(ide_end_drive_cmd);

/**
 *	try_to_flush_leftover_data	-	flush junk
 *	@drive: drive to flush
 *
 *	try_to_flush_leftover_data() is invoked in response to a drive
 *	unexpectedly having its DRQ_STAT bit set.  As an alternative to
 *	resetting the drive, this routine tries to clear the condition
 *	by read a sector's worth of data from the drive.  Of course,
 *	this may not help if the drive is *waiting* for data from *us*.
 */
static void try_to_flush_leftover_data (ide_drive_t *drive)
{
	int i = (drive->mult_count ? drive->mult_count : 1) * SECTOR_WORDS;

	if (drive->media != ide_disk)
		return;
	while (i > 0) {
		u32 buffer[16];
		u32 wcount = (i > 16) ? 16 : i;

		i -= wcount;
		drive->hwif->input_data(drive, NULL, buffer, wcount * 4);
	}
}

static void ide_kill_rq(ide_drive_t *drive, struct request *rq)
{
	if (rq->rq_disk) {
		ide_driver_t *drv;

		drv = *(ide_driver_t **)rq->rq_disk->private_data;
		drv->end_request(drive, 0, 0);
	} else
		ide_end_request(drive, 0, 0);
}

static ide_startstop_t ide_ata_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
{
	ide_hwif_t *hwif = drive->hwif;

	if (stat & BUSY_STAT || ((stat & WRERR_STAT) && !drive->nowerr)) {
		/* other bits are useless when BUSY */
		rq->errors |= ERROR_RESET;
	} else if (stat & ERR_STAT) {
		/* err has different meaning on cdrom and tape */
		if (err == ABRT_ERR) {
			if (drive->select.b.lba &&
			    /* some newer drives don't support WIN_SPECIFY */
			    hwif->INB(hwif->io_ports.command_addr) ==
				WIN_SPECIFY)
				return ide_stopped;
		} else if ((err & BAD_CRC) == BAD_CRC) {
			/* UDMA crc error, just retry the operation */
			drive->crc_count++;
		} else if (err & (BBD_ERR | ECC_ERR)) {
			/* retries won't help these */
			rq->errors = ERROR_MAX;
		} else if (err & TRK0_ERR) {
			/* help it find track zero */
			rq->errors |= ERROR_RECAL;
		}
	}

	if ((stat & DRQ_STAT) && rq_data_dir(rq) == READ &&
	    (hwif->host_flags & IDE_HFLAG_ERROR_STOPS_FIFO) == 0)
		try_to_flush_leftover_data(drive);

	if (rq->errors >= ERROR_MAX || blk_noretry_request(rq)) {
		ide_kill_rq(drive, rq);
		return ide_stopped;
	}

	if (ide_read_status(drive) & (BUSY_STAT | DRQ_STAT))
		rq->errors |= ERROR_RESET;

	if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
		++rq->errors;
		return ide_do_reset(drive);
	}

	if ((rq->errors & ERROR_RECAL) == ERROR_RECAL)
		drive->special.b.recalibrate = 1;

	++rq->errors;

	return ide_stopped;
}

static ide_startstop_t ide_atapi_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
{
	ide_hwif_t *hwif = drive->hwif;

	if (stat & BUSY_STAT || ((stat & WRERR_STAT) && !drive->nowerr)) {
		/* other bits are useless when BUSY */
		rq->errors |= ERROR_RESET;
	} else {
		/* add decoding error stuff */
	}

	if (ide_read_status(drive) & (BUSY_STAT | DRQ_STAT))
		/* force an abort */
		hwif->OUTBSYNC(drive, WIN_IDLEIMMEDIATE,
			       hwif->io_ports.command_addr);

	if (rq->errors >= ERROR_MAX) {
		ide_kill_rq(drive, rq);
	} else {
		if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
			++rq->errors;
			return ide_do_reset(drive);
		}
		++rq->errors;
	}

	return ide_stopped;
}

ide_startstop_t
__ide_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
{
	if (drive->media == ide_disk)
		return ide_ata_error(drive, rq, stat, err);
	return ide_atapi_error(drive, rq, stat, err);
}

EXPORT_SYMBOL_GPL(__ide_error);

/**
 *	ide_error	-	handle an error on the IDE
 *	@drive: drive the error occurred on
 *	@msg: message to report
 *	@stat: status bits
 *
 *	ide_error() takes action based on the error returned by the drive.
 *	For normal I/O that may well include retries. We deal with
 *	both new-style (taskfile) and old style command handling here.
 *	In the case of taskfile command handling there is work left to
 *	do
 */
 
ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, u8 stat)
{
	struct request *rq;
	u8 err;

	err = ide_dump_status(drive, msg, stat);

	if ((rq = HWGROUP(drive)->rq) == NULL)
		return ide_stopped;

	/* retry only "normal" I/O: */
	if (!blk_fs_request(rq)) {
		rq->errors = 1;
		ide_end_drive_cmd(drive, stat, err);
		return ide_stopped;
	}

	if (rq->rq_disk) {
		ide_driver_t *drv;

		drv = *(ide_driver_t **)rq->rq_disk->private_data;
		return drv->error(drive, rq, stat, err);
	} else
		return __ide_error(drive, rq, stat, err);
}

EXPORT_SYMBOL_GPL(ide_error);

ide_startstop_t __ide_abort(ide_drive_t *drive, struct request *rq)
{
	if (drive->media != ide_disk)
		rq->errors |= ERROR_RESET;

	ide_kill_rq(drive, rq);

	return ide_stopped;
}

EXPORT_SYMBOL_GPL(__ide_abort);

/**
 *	ide_abort	-	abort pending IDE operations
 *	@drive: drive the error occurred on
 *	@msg: message to report
 *
 *	ide_abort kills and cleans up when we are about to do a 
 *	host initiated reset on active commands. Longer term we
 *	want handlers to have sensible abort handling themselves
 *
 *	This differs fundamentally from ide_error because in 
 *	this case the command is doing just fine when we
 *	blow it away.
 */
 
ide_startstop_t ide_abort(ide_drive_t *drive, const char *msg)
{
	struct request *rq;

	if (drive == NULL || (rq = HWGROUP(drive)->rq) == NULL)
		return ide_stopped;

	/* retry only "normal" I/O: */
	if (!blk_fs_request(rq)) {
		rq->errors = 1;
		ide_end_drive_cmd(drive, BUSY_STAT, 0);
		return ide_stopped;
	}

	if (rq->rq_disk) {
		ide_driver_t *drv;

		drv = *(ide_driver_t **)rq->rq_disk->private_data;
		return drv->abort(drive, rq);
	} else
		return __ide_abort(drive, rq);
}

static void ide_tf_set_specify_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
{
	tf->nsect   = drive->sect;
	tf->lbal    = drive->sect;
	tf->lbam    = drive->cyl;
	tf->lbah    = drive->cyl >> 8;
	tf->device  = ((drive->head - 1) | drive->select.all) & ~ATA_LBA;
	tf->command = WIN_SPECIFY;
}

static void ide_tf_set_restore_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
{
	tf->nsect   = drive->sect;
	tf->command = WIN_RESTORE;
}

static void ide_tf_set_setmult_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
{
	tf->nsect   = drive->mult_req;
	tf->command = WIN_SETMULT;
}

static ide_startstop_t ide_disk_special(ide_drive_t *drive)
{