ide: remove the legacy ide driver

The legay ide driver has been replace with libata starting in 2003 and has
been scheduled for removal for a while.  Finally kill it off so that we
can start cleaning up various bits of cruft it forced on the block layer.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 0 insertions, 536 deletions

diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
deleted file mode 100644
index f2be127ee96e61..00000000000000
--- a/drivers/ide/ide-iops.c
+++ /dev/null
@@ -1,536 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  Copyright (C) 2000-2002	Andre Hedrick <andre@linux-ide.org>
- *  Copyright (C) 2003		Red Hat
- *
- */
-
-#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/pci.h>
-#include <linux/delay.h>
-#include <linux/ide.h>
-#include <linux/bitops.h>
-#include <linux/nmi.h>
-
-#include <asm/byteorder.h>
-#include <asm/irq.h>
-#include <linux/uaccess.h>
-#include <asm/io.h>
-
-void SELECT_MASK(ide_drive_t *drive, int mask)
-{
-	const struct ide_port_ops *port_ops = drive->hwif->port_ops;
-
-	if (port_ops && port_ops->maskproc)
-		port_ops->maskproc(drive, mask);
-}
-
-u8 ide_read_error(ide_drive_t *drive)
-{
-	struct ide_taskfile tf;
-
-	drive->hwif->tp_ops->tf_read(drive, &tf, IDE_VALID_ERROR);
-
-	return tf.error;
-}
-EXPORT_SYMBOL_GPL(ide_read_error);
-
-void ide_fix_driveid(u16 *id)
-{
-#ifndef __LITTLE_ENDIAN
-# ifdef __BIG_ENDIAN
-	int i;
-
-	for (i = 0; i < 256; i++)
-		id[i] = __le16_to_cpu(id[i]);
-# else
-#  error "Please fix <asm/byteorder.h>"
-# endif
-#endif
-}
-
-/*
- * ide_fixstring() cleans up and (optionally) byte-swaps a text string,
- * removing leading/trailing blanks and compressing internal blanks.
- * It is primarily used to tidy up the model name/number fields as
- * returned by the ATA_CMD_ID_ATA[PI] commands.
- */
-
-void ide_fixstring(u8 *s, const int bytecount, const int byteswap)
-{
-	u8 *p, *end = &s[bytecount & ~1]; /* bytecount must be even */
-
-	if (byteswap) {
-		/* convert from big-endian to host byte order */
-		for (p = s ; p != end ; p += 2)
-			be16_to_cpus((u16 *) p);
-	}
-
-	/* strip leading blanks */
-	p = s;
-	while (s != end && *s == ' ')
-		++s;
-	/* compress internal blanks and strip trailing blanks */
-	while (s != end && *s) {
-		if (*s++ != ' ' || (s != end && *s && *s != ' '))
-			*p++ = *(s-1);
-	}
-	/* wipe out trailing garbage */
-	while (p != end)
-		*p++ = '\0';
-}
-EXPORT_SYMBOL(ide_fixstring);
-
-/*
- * This routine busy-waits for the drive status to be not "busy".
- * It then checks the status for all of the "good" bits and none
- * of the "bad" bits, and if all is okay it returns 0.  All other
- * cases return error -- caller may then invoke ide_error().
- *
- * This routine should get fixed to not hog the cpu during extra long waits..
- * That could be done by busy-waiting for the first jiffy or two, and then
- * setting a timer to wake up at half second intervals thereafter,
- * until timeout is achieved, before timing out.
- */
-int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad,
-		    unsigned long timeout, u8 *rstat)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
-	unsigned long flags;
-	bool irqs_threaded = force_irqthreads;
-	int i;
-	u8 stat;
-
-	udelay(1);	/* spec allows drive 400ns to assert "BUSY" */
-	stat = tp_ops->read_status(hwif);
-
-	if (stat & ATA_BUSY) {
-		if (!irqs_threaded) {
-			local_save_flags(flags);
-			local_irq_enable_in_hardirq();
-		}
-		timeout += jiffies;
-		while ((stat = tp_ops->read_status(hwif)) & ATA_BUSY) {
-			if (time_after(jiffies, timeout)) {
-				/*
-				 * One last read after the timeout in case
-				 * heavy interrupt load made us not make any
-				 * progress during the timeout..
-				 */
-				stat = tp_ops->read_status(hwif);
-				if ((stat & ATA_BUSY) == 0)
-					break;
-
-				if (!irqs_threaded)
-					local_irq_restore(flags);
-				*rstat = stat;
-				return -EBUSY;
-			}
-		}
-		if (!irqs_threaded)
-			local_irq_restore(flags);
-	}
-	/*
-	 * Allow status to settle, then read it again.
-	 * A few rare drives vastly violate the 400ns spec here,
-	 * so we'll wait up to 10usec for a "good" status
-	 * rather than expensively fail things immediately.
-	 * This fix courtesy of Matthew Faupel & Niccolo Rigacci.
-	 */
-	for (i = 0; i < 10; i++) {
-		udelay(1);
-		stat = tp_ops->read_status(hwif);
-
-		if (OK_STAT(stat, good, bad)) {
-			*rstat = stat;
-			return 0;
-		}
-	}
-	*rstat = stat;
-	return -EFAULT;
-}
-
-/*
- * In case of error returns error value after doing "*startstop = ide_error()".
- * The caller should return the updated value of "startstop" in this case,
- * "startstop" is unchanged when the function returns 0.
- */
-int ide_wait_stat(ide_startstop_t *startstop, ide_drive_t *drive, u8 good,
-		  u8 bad, unsigned long timeout)
-{
-	int err;
-	u8 stat;
-
-	/* bail early if we've exceeded max_failures */
-	if (drive->max_failures && (drive->failures > drive->max_failures)) {
-		*startstop = ide_stopped;
-		return 1;
-	}
-
-	err = __ide_wait_stat(drive, good, bad, timeout, &stat);
-
-	if (err) {
-		char *s = (err == -EBUSY) ? "status timeout" : "status error";
-		*startstop = ide_error(drive, s, stat);
-	}
-
-	return err;
-}
-EXPORT_SYMBOL(ide_wait_stat);
-
-/**
- *	ide_in_drive_list	-	look for drive in black/white list
- *	@id: drive identifier
- *	@table: list to inspect
- *
- *	Look for a drive in the blacklist and the whitelist tables
- *	Returns 1 if the drive is found in the table.
- */
-
-int ide_in_drive_list(u16 *id, const struct drive_list_entry *table)
-{
-	for ( ; table->id_model; table++)
-		if ((!strcmp(table->id_model, (char *)&id[ATA_ID_PROD])) &&
-		    (!table->id_firmware ||
-		     strstr((char *)&id[ATA_ID_FW_REV], table->id_firmware)))
-			return 1;
-	return 0;
-}
-EXPORT_SYMBOL_GPL(ide_in_drive_list);
-
-/*
- * Early UDMA66 devices don't set bit14 to 1, only bit13 is valid.
- * Some optical devices with the buggy firmwares have the same problem.
- */
-static const struct drive_list_entry ivb_list[] = {
-	{ "QUANTUM FIREBALLlct10 05"	, "A03.0900"	},
-	{ "QUANTUM FIREBALLlct20 30"	, "APL.0900"	},
-	{ "TSSTcorp CDDVDW SH-S202J"	, "SB00"	},
-	{ "TSSTcorp CDDVDW SH-S202J"	, "SB01"	},
-	{ "TSSTcorp CDDVDW SH-S202N"	, "SB00"	},
-	{ "TSSTcorp CDDVDW SH-S202N"	, "SB01"	},
-	{ "TSSTcorp CDDVDW SH-S202H"	, "SB00"	},
-	{ "TSSTcorp CDDVDW SH-S202H"	, "SB01"	},
-	{ "SAMSUNG SP0822N"		, "WA100-10"	},
-	{ NULL				, NULL		}
-};
-
-/*
- *  All hosts that use the 80c ribbon must use!
- *  The name is derived from upper byte of word 93 and the 80c ribbon.
- */
-u8 eighty_ninty_three(ide_drive_t *drive)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	u16 *id = drive->id;
-	int ivb = ide_in_drive_list(id, ivb_list);
-
-	if (hwif->cbl == ATA_CBL_SATA || hwif->cbl == ATA_CBL_PATA40_SHORT)
-		return 1;
-
-	if (ivb)
-		printk(KERN_DEBUG "%s: skipping word 93 validity check\n",
-				  drive->name);
-
-	if (ata_id_is_sata(id) && !ivb)
-		return 1;
-
-	if (hwif->cbl != ATA_CBL_PATA80 && !ivb)
-		goto no_80w;
-
-	/*
-	 * FIXME:
-	 * - change master/slave IDENTIFY order
-	 * - force bit13 (80c cable present) check also for !ivb devices
-	 *   (unless the slave device is pre-ATA3)
-	 */
-	if (id[ATA_ID_HW_CONFIG] & 0x4000)
-		return 1;
-
-	if (ivb) {
-		const char *model = (char *)&id[ATA_ID_PROD];
-
-		if (strstr(model, "TSSTcorp CDDVDW SH-S202")) {
-			/*
-			 * These ATAPI devices always report 80c cable
-			 * so we have to depend on the host in this case.
-			 */
-			if (hwif->cbl == ATA_CBL_PATA80)
-				return 1;
-		} else {
-			/* Depend on the device side cable detection. */
-			if (id[ATA_ID_HW_CONFIG] & 0x2000)
-				return 1;
-		}
-	}
-no_80w:
-	if (drive->dev_flags & IDE_DFLAG_UDMA33_WARNED)
-		return 0;
-
-	printk(KERN_WARNING "%s: %s side 80-wire cable detection failed, "
-			    "limiting max speed to UDMA33\n",
-			    drive->name,
-			    hwif->cbl == ATA_CBL_PATA80 ? "drive" : "host");
-
-	drive->dev_flags |= IDE_DFLAG_UDMA33_WARNED;
-
-	return 0;
-}
-
-static const char *nien_quirk_list[] = {
-	"QUANTUM FIREBALLlct08 08",
-	"QUANTUM FIREBALLP KA6.4",
-	"QUANTUM FIREBALLP KA9.1",
-	"QUANTUM FIREBALLP KX13.6",
-	"QUANTUM FIREBALLP KX20.5",
-	"QUANTUM FIREBALLP KX27.3",
-	"QUANTUM FIREBALLP LM20.4",
-	"QUANTUM FIREBALLP LM20.5",
-	"FUJITSU MHZ2160BH G2",
-	NULL
-};
-
-void ide_check_nien_quirk_list(ide_drive_t *drive)
-{
-	const char **list, *m = (char *)&drive->id[ATA_ID_PROD];
-
-	for (list = nien_quirk_list; *list != NULL; list++)
-		if (strstr(m, *list) != NULL) {
-			drive->dev_flags |= IDE_DFLAG_NIEN_QUIRK;
-			return;
-		}
-}
-
-int ide_driveid_update(ide_drive_t *drive)
-{
-	u16 *id;
-	int rc;
-
-	id = kmalloc(SECTOR_SIZE, GFP_ATOMIC);
-	if (id == NULL)
-		return 0;
-
-	SELECT_MASK(drive, 1);
-	rc = ide_dev_read_id(drive, ATA_CMD_ID_ATA, id, 1);
-	SELECT_MASK(drive, 0);
-
-	if (rc)
-		goto out_err;
-
-	drive->id[ATA_ID_UDMA_MODES]  = id[ATA_ID_UDMA_MODES];
-	drive->id[ATA_ID_MWDMA_MODES] = id[ATA_ID_MWDMA_MODES];
-	drive->id[ATA_ID_SWDMA_MODES] = id[ATA_ID_SWDMA_MODES];
-	drive->id[ATA_ID_CFA_MODES]   = id[ATA_ID_CFA_MODES];
-	/* anything more ? */
-
-	kfree(id);
-
-	return 1;
-out_err:
-	if (rc == 2)
-		printk(KERN_ERR "%s: %s: bad status\n", drive->name, __func__);
-	kfree(id);
-	return 0;
-}
-
-int ide_config_drive_speed(ide_drive_t *drive, u8 speed)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	const struct ide_tp_ops *tp_ops = hwif->tp_ops;
-	struct ide_taskfile tf;
-	u16 *id = drive->id, i;
-	int error = 0;
-	u8 stat;
-
-#ifdef CONFIG_BLK_DEV_IDEDMA
-	if (hwif->dma_ops)	/* check if host supports DMA */
-		hwif->dma_ops->dma_host_set(drive, 0);
-#endif
-
-	/* Skip setting PIO flow-control modes on pre-EIDE drives */
-	if ((speed & 0xf8) == XFER_PIO_0 && ata_id_has_iordy(drive->id) == 0)
-		goto skip;
-
-	/*
-	 * Don't use ide_wait_cmd here - it will
-	 * attempt to set_geometry and recalibrate,
-	 * but for some reason these don't work at
-	 * this point (lost interrupt).
-	 */
-
-	udelay(1);
-	tp_ops->dev_select(drive);
-	SELECT_MASK(drive, 1);
-	udelay(1);
-	tp_ops->write_devctl(hwif, ATA_NIEN | ATA_DEVCTL_OBS);
-
-	memset(&tf, 0, sizeof(tf));
-	tf.feature = SETFEATURES_XFER;
-	tf.nsect   = speed;
-
-	tp_ops->tf_load(drive, &tf, IDE_VALID_FEATURE | IDE_VALID_NSECT);
-
-	tp_ops->exec_command(hwif, ATA_CMD_SET_FEATURES);
-
-	if (drive->dev_flags & IDE_DFLAG_NIEN_QUIRK)
-		tp_ops->write_devctl(hwif, ATA_DEVCTL_OBS);
-
-	error = __ide_wait_stat(drive, drive->ready_stat,
-				ATA_BUSY | ATA_DRQ | ATA_ERR,
-				WAIT_CMD, &stat);
-
-	SELECT_MASK(drive, 0);
-
-	if (error) {
-		(void) ide_dump_status(drive, "set_drive_speed_status", stat);
-		return error;
-	}
-
-	if (speed >= XFER_SW_DMA_0) {
-		id[ATA_ID_UDMA_MODES]  &= ~0xFF00;
-		id[ATA_ID_MWDMA_MODES] &= ~0x0700;
-		id[ATA_ID_SWDMA_MODES] &= ~0x0700;
-		if (ata_id_is_cfa(id))
-			id[ATA_ID_CFA_MODES] &= ~0x0E00;
-	} else	if (ata_id_is_cfa(id))
-		id[ATA_ID_CFA_MODES] &= ~0x01C0;
-
- skip:
-#ifdef CONFIG_BLK_DEV_IDEDMA
-	if (speed >= XFER_SW_DMA_0 && (drive->dev_flags & IDE_DFLAG_USING_DMA))
-		hwif->dma_ops->dma_host_set(drive, 1);
-	else if (hwif->dma_ops)	/* check if host supports DMA */
-		ide_dma_off_quietly(drive);
-#endif
-
-	if (speed >= XFER_UDMA_0) {
-		i = 1 << (speed - XFER_UDMA_0);
-		id[ATA_ID_UDMA_MODES] |= (i << 8 | i);
-	} else if (ata_id_is_cfa(id) && speed >= XFER_MW_DMA_3) {
-		i = speed - XFER_MW_DMA_2;
-		id[ATA_ID_CFA_MODES] |= i << 9;
-	} else if (speed >= XFER_MW_DMA_0) {
-		i = 1 << (speed - XFER_MW_DMA_0);
-		id[ATA_ID_MWDMA_MODES] |= (i << 8 | i);
-	} else if (speed >= XFER_SW_DMA_0) {
-		i = 1 << (speed - XFER_SW_DMA_0);
-		id[ATA_ID_SWDMA_MODES] |= (i << 8 | i);
-	} else if (ata_id_is_cfa(id) && speed >= XFER_PIO_5) {
-		i = speed - XFER_PIO_4;
-		id[ATA_ID_CFA_MODES] |= i << 6;
-	}
-
-	if (!drive->init_speed)
-		drive->init_speed = speed;
-	drive->current_speed = speed;
-	return error;
-}
-
-/*
- * This should get invoked any time we exit the driver to
- * wait for an interrupt response from a drive.  handler() points
- * at the appropriate code to handle the next interrupt, and a
- * timer is started to prevent us from waiting forever in case
- * something goes wrong (see the ide_timer_expiry() handler later on).
- *
- * See also ide_execute_command
- */
-void __ide_set_handler(ide_drive_t *drive, ide_handler_t *handler,
-		       unsigned int timeout)
-{
-	ide_hwif_t *hwif = drive->hwif;
-
-	BUG_ON(hwif->handler);
-	hwif->handler		= handler;
-	hwif->timer.expires	= jiffies + timeout;
-	hwif->req_gen_timer	= hwif->req_gen;
-	add_timer(&hwif->timer);
-}
-
-void ide_set_handler(ide_drive_t *drive, ide_handler_t *handler,
-		     unsigned int timeout)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	unsigned long flags;
-
-	spin_lock_irqsave(&hwif->lock, flags);
-	__ide_set_handler(drive, handler, timeout);
-	spin_unlock_irqrestore(&hwif->lock, flags);
-}
-EXPORT_SYMBOL(ide_set_handler);
-
-/**
- *	ide_execute_command	-	execute an IDE command
- *	@drive: IDE drive to issue the command against
- *	@cmd: command
- *	@handler: handler for next phase
- *	@timeout: timeout for command
- *
- *	Helper function to issue an IDE command. This handles the
- *	atomicity requirements, command timing and ensures that the
- *	handler and IRQ setup do not race. All IDE command kick off
- *	should go via this function or do equivalent locking.
- */
-
-void ide_execute_command(ide_drive_t *drive, struct ide_cmd *cmd,
-			 ide_handler_t *handler, unsigned timeout)
-{
-	ide_hwif_t *hwif = drive->hwif;
-	unsigned long flags;
-
-	spin_lock_irqsave(&hwif->lock, flags);
-	if ((cmd->protocol != ATAPI_PROT_DMA &&
-	     cmd->protocol != ATAPI_PROT_PIO) ||
-	    (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT))
-		__ide_set_handler(drive, handler, timeout);
-	hwif->tp_ops->exec_command(hwif, cmd->tf.command);
-	/*
-	 * Drive takes 400nS to respond, we must avoid the IRQ being
-	 * serviced before that.
-	 *
-	 * FIXME: we could skip this delay with care on non shared devices
-	 */
-	ndelay(400);
-	spin_unlock_irqrestore(&hwif->lock, flags);
-}
-
-/*
- * ide_wait_not_busy() waits for the currently selected device on the hwif
- * to report a non-busy status, see comments in ide_probe_port().
- */
-int ide_wait_not_busy(ide_hwif_t *hwif, unsigned long timeout)
-{
-	u8 stat = 0;
-
-	while (timeout--) {
-		/*
-		 * Turn this into a schedule() sleep once I'm sure
-		 * about locking issues (2.5 work ?).
-		 */
-		mdelay(1);
-		stat = hwif->tp_ops->read_status(hwif);
-		if ((stat & ATA_BUSY) == 0)
-			return 0;
-		/*
-		 * Assume a value of 0xff means nothing is connected to
-		 * the interface and it doesn't implement the pull-down
-		 * resistor on D7.
-		 */
-		if (stat == 0xff)
-			return -ENODEV;
-		touch_nmi_watchdog();
-	}
-	return -EBUSY;
-}