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-rw-r--r--drivers/ide/ide-iops.c536
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 f2be127ee96e..000000000000
--- 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;
-}