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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/ide/ide-iops.c
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Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/ide/ide-iops.c')
-rw-r--r--drivers/ide/ide-iops.c1285
1 files changed, 1285 insertions, 0 deletions
diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
new file mode 100644
index 0000000..5302494
--- /dev/null
+++ b/drivers/ide/ide-iops.c
@@ -0,0 +1,1285 @@
+/*
+ * linux/drivers/ide/ide-iops.c Version 0.37 Mar 05, 2003
+ *
+ * Copyright (C) 2000-2002 Andre Hedrick <andre@linux-ide.org>
+ * Copyright (C) 2003 Red Hat <alan@redhat.com>
+ *
+ */
+
+#include <linux/config.h>
+#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/hdreg.h>
+#include <linux/ide.h>
+#include <linux/bitops.h>
+
+#include <asm/byteorder.h>
+#include <asm/irq.h>
+#include <asm/uaccess.h>
+#include <asm/io.h>
+
+/*
+ * Conventional PIO operations for ATA devices
+ */
+
+static u8 ide_inb (unsigned long port)
+{
+ return (u8) inb(port);
+}
+
+static u16 ide_inw (unsigned long port)
+{
+ return (u16) inw(port);
+}
+
+static void ide_insw (unsigned long port, void *addr, u32 count)
+{
+ insw(port, addr, count);
+}
+
+static u32 ide_inl (unsigned long port)
+{
+ return (u32) inl(port);
+}
+
+static void ide_insl (unsigned long port, void *addr, u32 count)
+{
+ insl(port, addr, count);
+}
+
+static void ide_outb (u8 val, unsigned long port)
+{
+ outb(val, port);
+}
+
+static void ide_outbsync (ide_drive_t *drive, u8 addr, unsigned long port)
+{
+ outb(addr, port);
+}
+
+static void ide_outw (u16 val, unsigned long port)
+{
+ outw(val, port);
+}
+
+static void ide_outsw (unsigned long port, void *addr, u32 count)
+{
+ outsw(port, addr, count);
+}
+
+static void ide_outl (u32 val, unsigned long port)
+{
+ outl(val, port);
+}
+
+static void ide_outsl (unsigned long port, void *addr, u32 count)
+{
+ outsl(port, addr, count);
+}
+
+void default_hwif_iops (ide_hwif_t *hwif)
+{
+ hwif->OUTB = ide_outb;
+ hwif->OUTBSYNC = ide_outbsync;
+ hwif->OUTW = ide_outw;
+ hwif->OUTL = ide_outl;
+ hwif->OUTSW = ide_outsw;
+ hwif->OUTSL = ide_outsl;
+ hwif->INB = ide_inb;
+ hwif->INW = ide_inw;
+ hwif->INL = ide_inl;
+ hwif->INSW = ide_insw;
+ hwif->INSL = ide_insl;
+}
+
+EXPORT_SYMBOL(default_hwif_iops);
+
+/*
+ * MMIO operations, typically used for SATA controllers
+ */
+
+static u8 ide_mm_inb (unsigned long port)
+{
+ return (u8) readb((void __iomem *) port);
+}
+
+static u16 ide_mm_inw (unsigned long port)
+{
+ return (u16) readw((void __iomem *) port);
+}
+
+static void ide_mm_insw (unsigned long port, void *addr, u32 count)
+{
+ __ide_mm_insw((void __iomem *) port, addr, count);
+}
+
+static u32 ide_mm_inl (unsigned long port)
+{
+ return (u32) readl((void __iomem *) port);
+}
+
+static void ide_mm_insl (unsigned long port, void *addr, u32 count)
+{
+ __ide_mm_insl((void __iomem *) port, addr, count);
+}
+
+static void ide_mm_outb (u8 value, unsigned long port)
+{
+ writeb(value, (void __iomem *) port);
+}
+
+static void ide_mm_outbsync (ide_drive_t *drive, u8 value, unsigned long port)
+{
+ writeb(value, (void __iomem *) port);
+}
+
+static void ide_mm_outw (u16 value, unsigned long port)
+{
+ writew(value, (void __iomem *) port);
+}
+
+static void ide_mm_outsw (unsigned long port, void *addr, u32 count)
+{
+ __ide_mm_outsw((void __iomem *) port, addr, count);
+}
+
+static void ide_mm_outl (u32 value, unsigned long port)
+{
+ writel(value, (void __iomem *) port);
+}
+
+static void ide_mm_outsl (unsigned long port, void *addr, u32 count)
+{
+ __ide_mm_outsl((void __iomem *) port, addr, count);
+}
+
+void default_hwif_mmiops (ide_hwif_t *hwif)
+{
+ hwif->OUTB = ide_mm_outb;
+ /* Most systems will need to override OUTBSYNC, alas however
+ this one is controller specific! */
+ hwif->OUTBSYNC = ide_mm_outbsync;
+ hwif->OUTW = ide_mm_outw;
+ hwif->OUTL = ide_mm_outl;
+ hwif->OUTSW = ide_mm_outsw;
+ hwif->OUTSL = ide_mm_outsl;
+ hwif->INB = ide_mm_inb;
+ hwif->INW = ide_mm_inw;
+ hwif->INL = ide_mm_inl;
+ hwif->INSW = ide_mm_insw;
+ hwif->INSL = ide_mm_insl;
+}
+
+EXPORT_SYMBOL(default_hwif_mmiops);
+
+u32 ide_read_24 (ide_drive_t *drive)
+{
+ u8 hcyl = HWIF(drive)->INB(IDE_HCYL_REG);
+ u8 lcyl = HWIF(drive)->INB(IDE_LCYL_REG);
+ u8 sect = HWIF(drive)->INB(IDE_SECTOR_REG);
+ return (hcyl<<16)|(lcyl<<8)|sect;
+}
+
+void SELECT_DRIVE (ide_drive_t *drive)
+{
+ if (HWIF(drive)->selectproc)
+ HWIF(drive)->selectproc(drive);
+ HWIF(drive)->OUTB(drive->select.all, IDE_SELECT_REG);
+}
+
+EXPORT_SYMBOL(SELECT_DRIVE);
+
+void SELECT_INTERRUPT (ide_drive_t *drive)
+{
+ if (HWIF(drive)->intrproc)
+ HWIF(drive)->intrproc(drive);
+ else
+ HWIF(drive)->OUTB(drive->ctl|2, IDE_CONTROL_REG);
+}
+
+void SELECT_MASK (ide_drive_t *drive, int mask)
+{
+ if (HWIF(drive)->maskproc)
+ HWIF(drive)->maskproc(drive, mask);
+}
+
+void QUIRK_LIST (ide_drive_t *drive)
+{
+ if (HWIF(drive)->quirkproc)
+ drive->quirk_list = HWIF(drive)->quirkproc(drive);
+}
+
+/*
+ * Some localbus EIDE interfaces require a special access sequence
+ * when using 32-bit I/O instructions to transfer data. We call this
+ * the "vlb_sync" sequence, which consists of three successive reads
+ * of the sector count register location, with interrupts disabled
+ * to ensure that the reads all happen together.
+ */
+static void ata_vlb_sync(ide_drive_t *drive, unsigned long port)
+{
+ (void) HWIF(drive)->INB(port);
+ (void) HWIF(drive)->INB(port);
+ (void) HWIF(drive)->INB(port);
+}
+
+/*
+ * This is used for most PIO data transfers *from* the IDE interface
+ */
+static void ata_input_data(ide_drive_t *drive, void *buffer, u32 wcount)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 io_32bit = drive->io_32bit;
+
+ if (io_32bit) {
+ if (io_32bit & 2) {
+ unsigned long flags;
+ local_irq_save(flags);
+ ata_vlb_sync(drive, IDE_NSECTOR_REG);
+ hwif->INSL(IDE_DATA_REG, buffer, wcount);
+ local_irq_restore(flags);
+ } else
+ hwif->INSL(IDE_DATA_REG, buffer, wcount);
+ } else {
+ hwif->INSW(IDE_DATA_REG, buffer, wcount<<1);
+ }
+}
+
+/*
+ * This is used for most PIO data transfers *to* the IDE interface
+ */
+static void ata_output_data(ide_drive_t *drive, void *buffer, u32 wcount)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 io_32bit = drive->io_32bit;
+
+ if (io_32bit) {
+ if (io_32bit & 2) {
+ unsigned long flags;
+ local_irq_save(flags);
+ ata_vlb_sync(drive, IDE_NSECTOR_REG);
+ hwif->OUTSL(IDE_DATA_REG, buffer, wcount);
+ local_irq_restore(flags);
+ } else
+ hwif->OUTSL(IDE_DATA_REG, buffer, wcount);
+ } else {
+ hwif->OUTSW(IDE_DATA_REG, buffer, wcount<<1);
+ }
+}
+
+/*
+ * The following routines are mainly used by the ATAPI drivers.
+ *
+ * These routines will round up any request for an odd number of bytes,
+ * so if an odd bytecount is specified, be sure that there's at least one
+ * extra byte allocated for the buffer.
+ */
+
+static void atapi_input_bytes(ide_drive_t *drive, void *buffer, u32 bytecount)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+
+ ++bytecount;
+#if defined(CONFIG_ATARI) || defined(CONFIG_Q40)
+ if (MACH_IS_ATARI || MACH_IS_Q40) {
+ /* Atari has a byte-swapped IDE interface */
+ insw_swapw(IDE_DATA_REG, buffer, bytecount / 2);
+ return;
+ }
+#endif /* CONFIG_ATARI || CONFIG_Q40 */
+ hwif->ata_input_data(drive, buffer, bytecount / 4);
+ if ((bytecount & 0x03) >= 2)
+ hwif->INSW(IDE_DATA_REG, ((u8 *)buffer)+(bytecount & ~0x03), 1);
+}
+
+static void atapi_output_bytes(ide_drive_t *drive, void *buffer, u32 bytecount)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+
+ ++bytecount;
+#if defined(CONFIG_ATARI) || defined(CONFIG_Q40)
+ if (MACH_IS_ATARI || MACH_IS_Q40) {
+ /* Atari has a byte-swapped IDE interface */
+ outsw_swapw(IDE_DATA_REG, buffer, bytecount / 2);
+ return;
+ }
+#endif /* CONFIG_ATARI || CONFIG_Q40 */
+ hwif->ata_output_data(drive, buffer, bytecount / 4);
+ if ((bytecount & 0x03) >= 2)
+ hwif->OUTSW(IDE_DATA_REG, ((u8*)buffer)+(bytecount & ~0x03), 1);
+}
+
+void default_hwif_transport(ide_hwif_t *hwif)
+{
+ hwif->ata_input_data = ata_input_data;
+ hwif->ata_output_data = ata_output_data;
+ hwif->atapi_input_bytes = atapi_input_bytes;
+ hwif->atapi_output_bytes = atapi_output_bytes;
+}
+
+EXPORT_SYMBOL(default_hwif_transport);
+
+/*
+ * Beginning of Taskfile OPCODE Library and feature sets.
+ */
+void ide_fix_driveid (struct hd_driveid *id)
+{
+#ifndef __LITTLE_ENDIAN
+# ifdef __BIG_ENDIAN
+ int i;
+ u16 *stringcast;
+
+ id->config = __le16_to_cpu(id->config);
+ id->cyls = __le16_to_cpu(id->cyls);
+ id->reserved2 = __le16_to_cpu(id->reserved2);
+ id->heads = __le16_to_cpu(id->heads);
+ id->track_bytes = __le16_to_cpu(id->track_bytes);
+ id->sector_bytes = __le16_to_cpu(id->sector_bytes);
+ id->sectors = __le16_to_cpu(id->sectors);
+ id->vendor0 = __le16_to_cpu(id->vendor0);
+ id->vendor1 = __le16_to_cpu(id->vendor1);
+ id->vendor2 = __le16_to_cpu(id->vendor2);
+ stringcast = (u16 *)&id->serial_no[0];
+ for (i = 0; i < (20/2); i++)
+ stringcast[i] = __le16_to_cpu(stringcast[i]);
+ id->buf_type = __le16_to_cpu(id->buf_type);
+ id->buf_size = __le16_to_cpu(id->buf_size);
+ id->ecc_bytes = __le16_to_cpu(id->ecc_bytes);
+ stringcast = (u16 *)&id->fw_rev[0];
+ for (i = 0; i < (8/2); i++)
+ stringcast[i] = __le16_to_cpu(stringcast[i]);
+ stringcast = (u16 *)&id->model[0];
+ for (i = 0; i < (40/2); i++)
+ stringcast[i] = __le16_to_cpu(stringcast[i]);
+ id->dword_io = __le16_to_cpu(id->dword_io);
+ id->reserved50 = __le16_to_cpu(id->reserved50);
+ id->field_valid = __le16_to_cpu(id->field_valid);
+ id->cur_cyls = __le16_to_cpu(id->cur_cyls);
+ id->cur_heads = __le16_to_cpu(id->cur_heads);
+ id->cur_sectors = __le16_to_cpu(id->cur_sectors);
+ id->cur_capacity0 = __le16_to_cpu(id->cur_capacity0);
+ id->cur_capacity1 = __le16_to_cpu(id->cur_capacity1);
+ id->lba_capacity = __le32_to_cpu(id->lba_capacity);
+ id->dma_1word = __le16_to_cpu(id->dma_1word);
+ id->dma_mword = __le16_to_cpu(id->dma_mword);
+ id->eide_pio_modes = __le16_to_cpu(id->eide_pio_modes);
+ id->eide_dma_min = __le16_to_cpu(id->eide_dma_min);
+ id->eide_dma_time = __le16_to_cpu(id->eide_dma_time);
+ id->eide_pio = __le16_to_cpu(id->eide_pio);
+ id->eide_pio_iordy = __le16_to_cpu(id->eide_pio_iordy);
+ for (i = 0; i < 2; ++i)
+ id->words69_70[i] = __le16_to_cpu(id->words69_70[i]);
+ for (i = 0; i < 4; ++i)
+ id->words71_74[i] = __le16_to_cpu(id->words71_74[i]);
+ id->queue_depth = __le16_to_cpu(id->queue_depth);
+ for (i = 0; i < 4; ++i)
+ id->words76_79[i] = __le16_to_cpu(id->words76_79[i]);
+ id->major_rev_num = __le16_to_cpu(id->major_rev_num);
+ id->minor_rev_num = __le16_to_cpu(id->minor_rev_num);
+ id->command_set_1 = __le16_to_cpu(id->command_set_1);
+ id->command_set_2 = __le16_to_cpu(id->command_set_2);
+ id->cfsse = __le16_to_cpu(id->cfsse);
+ id->cfs_enable_1 = __le16_to_cpu(id->cfs_enable_1);
+ id->cfs_enable_2 = __le16_to_cpu(id->cfs_enable_2);
+ id->csf_default = __le16_to_cpu(id->csf_default);
+ id->dma_ultra = __le16_to_cpu(id->dma_ultra);
+ id->trseuc = __le16_to_cpu(id->trseuc);
+ id->trsEuc = __le16_to_cpu(id->trsEuc);
+ id->CurAPMvalues = __le16_to_cpu(id->CurAPMvalues);
+ id->mprc = __le16_to_cpu(id->mprc);
+ id->hw_config = __le16_to_cpu(id->hw_config);
+ id->acoustic = __le16_to_cpu(id->acoustic);
+ id->msrqs = __le16_to_cpu(id->msrqs);
+ id->sxfert = __le16_to_cpu(id->sxfert);
+ id->sal = __le16_to_cpu(id->sal);
+ id->spg = __le32_to_cpu(id->spg);
+ id->lba_capacity_2 = __le64_to_cpu(id->lba_capacity_2);
+ for (i = 0; i < 22; i++)
+ id->words104_125[i] = __le16_to_cpu(id->words104_125[i]);
+ id->last_lun = __le16_to_cpu(id->last_lun);
+ id->word127 = __le16_to_cpu(id->word127);
+ id->dlf = __le16_to_cpu(id->dlf);
+ id->csfo = __le16_to_cpu(id->csfo);
+ for (i = 0; i < 26; i++)
+ id->words130_155[i] = __le16_to_cpu(id->words130_155[i]);
+ id->word156 = __le16_to_cpu(id->word156);
+ for (i = 0; i < 3; i++)
+ id->words157_159[i] = __le16_to_cpu(id->words157_159[i]);
+ id->cfa_power = __le16_to_cpu(id->cfa_power);
+ for (i = 0; i < 14; i++)
+ id->words161_175[i] = __le16_to_cpu(id->words161_175[i]);
+ for (i = 0; i < 31; i++)
+ id->words176_205[i] = __le16_to_cpu(id->words176_205[i]);
+ for (i = 0; i < 48; i++)
+ id->words206_254[i] = __le16_to_cpu(id->words206_254[i]);
+ id->integrity_word = __le16_to_cpu(id->integrity_word);
+# else
+# error "Please fix <asm/byteorder.h>"
+# endif
+#endif
+}
+
+/* FIXME: exported for use by the USB storage (isd200.c) code only */
+EXPORT_SYMBOL(ide_fix_driveid);
+
+void ide_fixstring (u8 *s, const int bytecount, const int byteswap)
+{
+ u8 *p = s, *end = &s[bytecount & ~1]; /* bytecount must be even */
+
+ if (byteswap) {
+ /* convert from big-endian to host byte order */
+ for (p = end ; p != s;) {
+ unsigned short *pp = (unsigned short *) (p -= 2);
+ *pp = ntohs(*pp);
+ }
+ }
+ /* strip leading blanks */
+ 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);
+
+/*
+ * Needed for PCI irq sharing
+ */
+int drive_is_ready (ide_drive_t *drive)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 stat = 0;
+
+ if (drive->waiting_for_dma)
+ return hwif->ide_dma_test_irq(drive);
+
+#if 0
+ /* need to guarantee 400ns since last command was issued */
+ udelay(1);
+#endif
+
+#ifdef CONFIG_IDEPCI_SHARE_IRQ
+ /*
+ * We do a passive status test under shared PCI interrupts on
+ * cards that truly share the ATA side interrupt, but may also share
+ * an interrupt with another pci card/device. We make no assumptions
+ * about possible isa-pnp and pci-pnp issues yet.
+ */
+ if (IDE_CONTROL_REG)
+ stat = hwif->INB(IDE_ALTSTATUS_REG);
+ else
+#endif /* CONFIG_IDEPCI_SHARE_IRQ */
+ /* Note: this may clear a pending IRQ!! */
+ stat = hwif->INB(IDE_STATUS_REG);
+
+ if (stat & BUSY_STAT)
+ /* drive busy: definitely not interrupting */
+ return 0;
+
+ /* drive ready: *might* be interrupting */
+ return 1;
+}
+
+EXPORT_SYMBOL(drive_is_ready);
+
+/*
+ * Global for All, and taken from ide-pmac.c. Can be called
+ * with spinlock held & IRQs disabled, so don't schedule !
+ */
+int wait_for_ready (ide_drive_t *drive, int timeout)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 stat = 0;
+
+ while(--timeout) {
+ stat = hwif->INB(IDE_STATUS_REG);
+ if (!(stat & BUSY_STAT)) {
+ if (drive->ready_stat == 0)
+ break;
+ else if ((stat & drive->ready_stat)||(stat & ERR_STAT))
+ break;
+ }
+ mdelay(1);
+ }
+ if ((stat & ERR_STAT) || timeout <= 0) {
+ if (stat & ERR_STAT) {
+ printk(KERN_ERR "%s: wait_for_ready, "
+ "error status: %x\n", drive->name, stat);
+ }
+ return 1;
+ }
+ return 0;
+}
+
+EXPORT_SYMBOL(wait_for_ready);
+
+/*
+ * 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 1 after invoking ide_error() -- caller should just return.
+ *
+ * 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_startstop_t *startstop, ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 stat;
+ int i;
+ unsigned long flags;
+
+ /* bail early if we've exceeded max_failures */
+ if (drive->max_failures && (drive->failures > drive->max_failures)) {
+ *startstop = ide_stopped;
+ return 1;
+ }
+
+ udelay(1); /* spec allows drive 400ns to assert "BUSY" */
+ if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
+ local_irq_set(flags);
+ timeout += jiffies;
+ while ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
+ 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 = hwif->INB(IDE_STATUS_REG);
+ if (!(stat & BUSY_STAT))
+ break;
+
+ local_irq_restore(flags);
+ *startstop = ide_error(drive, "status timeout", stat);
+ return 1;
+ }
+ }
+ 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);
+ if (OK_STAT((stat = hwif->INB(IDE_STATUS_REG)), good, bad))
+ return 0;
+ }
+ *startstop = ide_error(drive, "status error", stat);
+ return 1;
+}
+
+EXPORT_SYMBOL(ide_wait_stat);
+
+/*
+ * 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)
+{
+#if 0
+ if (!HWIF(drive)->udma_four)
+ return 0;
+
+ if (drive->id->major_rev_num) {
+ int hssbd = 0;
+ int i;
+ /*
+ * Determine highest Supported SPEC
+ */
+ for (i=1; i<=15; i++)
+ if (drive->id->major_rev_num & (1<<i))
+ hssbd++;
+
+ switch (hssbd) {
+ case 7:
+ case 6:
+ case 5:
+ /* ATA-4 and older do not support above Ultra 33 */
+ default:
+ return 0;
+ }
+ }
+
+ return ((u8) (
+#ifndef CONFIG_IDEDMA_IVB
+ (drive->id->hw_config & 0x4000) &&
+#endif /* CONFIG_IDEDMA_IVB */
+ (drive->id->hw_config & 0x6000)) ? 1 : 0);
+
+#else
+
+ return ((u8) ((HWIF(drive)->udma_four) &&
+#ifndef CONFIG_IDEDMA_IVB
+ (drive->id->hw_config & 0x4000) &&
+#endif /* CONFIG_IDEDMA_IVB */
+ (drive->id->hw_config & 0x6000)) ? 1 : 0);
+#endif
+}
+
+EXPORT_SYMBOL(eighty_ninty_three);
+
+int ide_ata66_check (ide_drive_t *drive, ide_task_t *args)
+{
+ if ((args->tfRegister[IDE_COMMAND_OFFSET] == WIN_SETFEATURES) &&
+ (args->tfRegister[IDE_SECTOR_OFFSET] > XFER_UDMA_2) &&
+ (args->tfRegister[IDE_FEATURE_OFFSET] == SETFEATURES_XFER)) {
+#ifndef CONFIG_IDEDMA_IVB
+ if ((drive->id->hw_config & 0x6000) == 0) {
+#else /* !CONFIG_IDEDMA_IVB */
+ if (((drive->id->hw_config & 0x2000) == 0) ||
+ ((drive->id->hw_config & 0x4000) == 0)) {
+#endif /* CONFIG_IDEDMA_IVB */
+ printk("%s: Speed warnings UDMA 3/4/5 is not "
+ "functional.\n", drive->name);
+ return 1;
+ }
+ if (!HWIF(drive)->udma_four) {
+ printk("%s: Speed warnings UDMA 3/4/5 is not "
+ "functional.\n",
+ HWIF(drive)->name);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Backside of HDIO_DRIVE_CMD call of SETFEATURES_XFER.
+ * 1 : Safe to update drive->id DMA registers.
+ * 0 : OOPs not allowed.
+ */
+int set_transfer (ide_drive_t *drive, ide_task_t *args)
+{
+ if ((args->tfRegister[IDE_COMMAND_OFFSET] == WIN_SETFEATURES) &&
+ (args->tfRegister[IDE_SECTOR_OFFSET] >= XFER_SW_DMA_0) &&
+ (args->tfRegister[IDE_FEATURE_OFFSET] == SETFEATURES_XFER) &&
+ (drive->id->dma_ultra ||
+ drive->id->dma_mword ||
+ drive->id->dma_1word))
+ return 1;
+
+ return 0;
+}
+
+#ifdef CONFIG_BLK_DEV_IDEDMA
+static u8 ide_auto_reduce_xfer (ide_drive_t *drive)
+{
+ if (!drive->crc_count)
+ return drive->current_speed;
+ drive->crc_count = 0;
+
+ switch(drive->current_speed) {
+ case XFER_UDMA_7: return XFER_UDMA_6;
+ case XFER_UDMA_6: return XFER_UDMA_5;
+ case XFER_UDMA_5: return XFER_UDMA_4;
+ case XFER_UDMA_4: return XFER_UDMA_3;
+ case XFER_UDMA_3: return XFER_UDMA_2;
+ case XFER_UDMA_2: return XFER_UDMA_1;
+ case XFER_UDMA_1: return XFER_UDMA_0;
+ /*
+ * OOPS we do not goto non Ultra DMA modes
+ * without iCRC's available we force
+ * the system to PIO and make the user
+ * invoke the ATA-1 ATA-2 DMA modes.
+ */
+ case XFER_UDMA_0:
+ default: return XFER_PIO_4;
+ }
+}
+#endif /* CONFIG_BLK_DEV_IDEDMA */
+
+/*
+ * Update the
+ */
+int ide_driveid_update (ide_drive_t *drive)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ struct hd_driveid *id;
+#if 0
+ id = kmalloc(SECTOR_WORDS*4, GFP_ATOMIC);
+ if (!id)
+ return 0;
+
+ taskfile_lib_get_identify(drive, (char *)&id);
+
+ ide_fix_driveid(id);
+ if (id) {
+ drive->id->dma_ultra = id->dma_ultra;
+ drive->id->dma_mword = id->dma_mword;
+ drive->id->dma_1word = id->dma_1word;
+ /* anything more ? */
+ kfree(id);
+ }
+ return 1;
+#else
+ /*
+ * Re-read drive->id for possible DMA mode
+ * change (copied from ide-probe.c)
+ */
+ unsigned long timeout, flags;
+
+ SELECT_MASK(drive, 1);
+ if (IDE_CONTROL_REG)
+ hwif->OUTB(drive->ctl,IDE_CONTROL_REG);
+ msleep(50);
+ hwif->OUTB(WIN_IDENTIFY, IDE_COMMAND_REG);
+ timeout = jiffies + WAIT_WORSTCASE;
+ do {
+ if (time_after(jiffies, timeout)) {
+ SELECT_MASK(drive, 0);
+ return 0; /* drive timed-out */
+ }
+ msleep(50); /* give drive a breather */
+ } while (hwif->INB(IDE_ALTSTATUS_REG) & BUSY_STAT);
+ msleep(50); /* wait for IRQ and DRQ_STAT */
+ if (!OK_STAT(hwif->INB(IDE_STATUS_REG),DRQ_STAT,BAD_R_STAT)) {
+ SELECT_MASK(drive, 0);
+ printk("%s: CHECK for good STATUS\n", drive->name);
+ return 0;
+ }
+ local_irq_save(flags);
+ SELECT_MASK(drive, 0);
+ id = kmalloc(SECTOR_WORDS*4, GFP_ATOMIC);
+ if (!id) {
+ local_irq_restore(flags);
+ return 0;
+ }
+ ata_input_data(drive, id, SECTOR_WORDS);
+ (void) hwif->INB(IDE_STATUS_REG); /* clear drive IRQ */
+ local_irq_enable();
+ local_irq_restore(flags);
+ ide_fix_driveid(id);
+ if (id) {
+ drive->id->dma_ultra = id->dma_ultra;
+ drive->id->dma_mword = id->dma_mword;
+ drive->id->dma_1word = id->dma_1word;
+ /* anything more ? */
+ kfree(id);
+ }
+
+ return 1;
+#endif
+}
+
+/*
+ * Similar to ide_wait_stat(), except it never calls ide_error internally.
+ * This is a kludge to handle the new ide_config_drive_speed() function,
+ * and should not otherwise be used anywhere. Eventually, the tuneproc's
+ * should be updated to return ide_startstop_t, in which case we can get
+ * rid of this abomination again. :) -ml
+ *
+ * It is gone..........
+ *
+ * const char *msg == consider adding for verbose errors.
+ */
+int ide_config_drive_speed (ide_drive_t *drive, u8 speed)
+{
+ ide_hwif_t *hwif = HWIF(drive);
+ int i, error = 1;
+ u8 stat;
+
+// while (HWGROUP(drive)->busy)
+// msleep(50);
+
+#ifdef CONFIG_BLK_DEV_IDEDMA
+ if (hwif->ide_dma_check) /* check if host supports DMA */
+ hwif->ide_dma_host_off(drive);
+#endif
+
+ /*
+ * 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).
+ */
+ /*
+ * Select the drive, and issue the SETFEATURES command
+ */
+ disable_irq_nosync(hwif->irq);
+
+ /*
+ * FIXME: we race against the running IRQ here if
+ * this is called from non IRQ context. If we use
+ * disable_irq() we hang on the error path. Work
+ * is needed.
+ */
+
+ udelay(1);
+ SELECT_DRIVE(drive);
+ SELECT_MASK(drive, 0);
+ udelay(1);
+ if (IDE_CONTROL_REG)
+ hwif->OUTB(drive->ctl | 2, IDE_CONTROL_REG);
+ hwif->OUTB(speed, IDE_NSECTOR_REG);
+ hwif->OUTB(SETFEATURES_XFER, IDE_FEATURE_REG);
+ hwif->OUTB(WIN_SETFEATURES, IDE_COMMAND_REG);
+ if ((IDE_CONTROL_REG) && (drive->quirk_list == 2))
+ hwif->OUTB(drive->ctl, IDE_CONTROL_REG);
+ udelay(1);
+ /*
+ * Wait for drive to become non-BUSY
+ */
+ if ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
+ unsigned long flags, timeout;
+ local_irq_set(flags);
+ timeout = jiffies + WAIT_CMD;
+ while ((stat = hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) {
+ if (time_after(jiffies, timeout))
+ break;
+ }
+ 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);
+ if (OK_STAT((stat = hwif->INB(IDE_STATUS_REG)), DRIVE_READY, BUSY_STAT|DRQ_STAT|ERR_STAT)) {
+ error = 0;
+ break;
+ }
+ }
+
+ SELECT_MASK(drive, 0);
+
+ enable_irq(hwif->irq);
+
+ if (error) {
+ (void) ide_dump_status(drive, "set_drive_speed_status", stat);
+ return error;
+ }
+
+ drive->id->dma_ultra &= ~0xFF00;
+ drive->id->dma_mword &= ~0x0F00;
+ drive->id->dma_1word &= ~0x0F00;
+
+#ifdef CONFIG_BLK_DEV_IDEDMA
+ if (speed >= XFER_SW_DMA_0)
+ hwif->ide_dma_host_on(drive);
+ else if (hwif->ide_dma_check) /* check if host supports DMA */
+ hwif->ide_dma_off_quietly(drive);
+#endif
+
+ switch(speed) {
+ case XFER_UDMA_7: drive->id->dma_ultra |= 0x8080; break;
+ case XFER_UDMA_6: drive->id->dma_ultra |= 0x4040; break;
+ case XFER_UDMA_5: drive->id->dma_ultra |= 0x2020; break;
+ case XFER_UDMA_4: drive->id->dma_ultra |= 0x1010; break;
+ case XFER_UDMA_3: drive->id->dma_ultra |= 0x0808; break;
+ case XFER_UDMA_2: drive->id->dma_ultra |= 0x0404; break;
+ case XFER_UDMA_1: drive->id->dma_ultra |= 0x0202; break;
+ case XFER_UDMA_0: drive->id->dma_ultra |= 0x0101; break;
+ case XFER_MW_DMA_2: drive->id->dma_mword |= 0x0404; break;
+ case XFER_MW_DMA_1: drive->id->dma_mword |= 0x0202; break;
+ case XFER_MW_DMA_0: drive->id->dma_mword |= 0x0101; break;
+ case XFER_SW_DMA_2: drive->id->dma_1word |= 0x0404; break;
+ case XFER_SW_DMA_1: drive->id->dma_1word |= 0x0202; break;
+ case XFER_SW_DMA_0: drive->id->dma_1word |= 0x0101; break;
+ default: break;
+ }
+ if (!drive->init_speed)
+ drive->init_speed = speed;
+ drive->current_speed = speed;
+ return error;
+}
+
+EXPORT_SYMBOL(ide_config_drive_speed);
+
+
+/*
+ * 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
+ */
+static void __ide_set_handler (ide_drive_t *drive, ide_handler_t *handler,
+ unsigned int timeout, ide_expiry_t *expiry)
+{
+ ide_hwgroup_t *hwgroup = HWGROUP(drive);
+
+ if (hwgroup->handler != NULL) {
+ printk(KERN_CRIT "%s: ide_set_handler: handler not null; "
+ "old=%p, new=%p\n",
+ drive->name, hwgroup->handler, handler);
+ }
+ hwgroup->handler = handler;
+ hwgroup->expiry = expiry;
+ hwgroup->timer.expires = jiffies + timeout;
+ add_timer(&hwgroup->timer);
+}
+
+void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler,
+ unsigned int timeout, ide_expiry_t *expiry)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&ide_lock, flags);
+ __ide_set_handler(drive, handler, timeout, expiry);
+ spin_unlock_irqrestore(&ide_lock, flags);
+}
+
+EXPORT_SYMBOL(ide_set_handler);
+
+/**
+ * ide_execute_command - execute an IDE command
+ * @drive: IDE drive to issue the command against
+ * @command: command byte to write
+ * @handler: handler for next phase
+ * @timeout: timeout for command
+ * @expiry: handler to run on timeout
+ *
+ * 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, task_ioreg_t cmd, ide_handler_t *handler, unsigned timeout, ide_expiry_t *expiry)
+{
+ unsigned long flags;
+ ide_hwgroup_t *hwgroup = HWGROUP(drive);
+ ide_hwif_t *hwif = HWIF(drive);
+
+ spin_lock_irqsave(&ide_lock, flags);
+
+ if(hwgroup->handler)
+ BUG();
+ hwgroup->handler = handler;
+ hwgroup->expiry = expiry;
+ hwgroup->timer.expires = jiffies + timeout;
+ add_timer(&hwgroup->timer);
+ hwif->OUTBSYNC(drive, cmd, IDE_COMMAND_REG);
+ /* 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(&ide_lock, flags);
+}
+
+EXPORT_SYMBOL(ide_execute_command);
+
+
+/* needed below */
+static ide_startstop_t do_reset1 (ide_drive_t *, int);
+
+/*
+ * atapi_reset_pollfunc() gets invoked to poll the interface for completion every 50ms
+ * during an atapi drive reset operation. If the drive has not yet responded,
+ * and we have not yet hit our maximum waiting time, then the timer is restarted
+ * for another 50ms.
+ */
+static ide_startstop_t atapi_reset_pollfunc (ide_drive_t *drive)
+{
+ ide_hwgroup_t *hwgroup = HWGROUP(drive);
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 stat;
+
+ SELECT_DRIVE(drive);
+ udelay (10);
+
+ if (OK_STAT(stat = hwif->INB(IDE_STATUS_REG), 0, BUSY_STAT)) {
+ printk("%s: ATAPI reset complete\n", drive->name);
+ } else {
+ if (time_before(jiffies, hwgroup->poll_timeout)) {
+ if (HWGROUP(drive)->handler != NULL)
+ BUG();
+ ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
+ /* continue polling */
+ return ide_started;
+ }
+ /* end of polling */
+ hwgroup->polling = 0;
+ printk("%s: ATAPI reset timed-out, status=0x%02x\n",
+ drive->name, stat);
+ /* do it the old fashioned way */
+ return do_reset1(drive, 1);
+ }
+ /* done polling */
+ hwgroup->polling = 0;
+ return ide_stopped;
+}
+
+/*
+ * reset_pollfunc() gets invoked to poll the interface for completion every 50ms
+ * during an ide reset operation. If the drives have not yet responded,
+ * and we have not yet hit our maximum waiting time, then the timer is restarted
+ * for another 50ms.
+ */
+static ide_startstop_t reset_pollfunc (ide_drive_t *drive)
+{
+ ide_hwgroup_t *hwgroup = HWGROUP(drive);
+ ide_hwif_t *hwif = HWIF(drive);
+ u8 tmp;
+
+ if (hwif->reset_poll != NULL) {
+ if (hwif->reset_poll(drive)) {
+ printk(KERN_ERR "%s: host reset_poll failure for %s.\n",
+ hwif->name, drive->name);
+ return ide_stopped;
+ }
+ }
+
+ if (!OK_STAT(tmp = hwif->INB(IDE_STATUS_REG), 0, BUSY_STAT)) {
+ if (time_before(jiffies, hwgroup->poll_timeout)) {
+ if (HWGROUP(drive)->handler != NULL)
+ BUG();
+ ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL);
+ /* continue polling */
+ return ide_started;
+ }
+ printk("%s: reset timed-out, status=0x%02x\n", hwif->name, tmp);
+ drive->failures++;
+ } else {
+ printk("%s: reset: ", hwif->name);
+ if ((tmp = hwif->INB(IDE_ERROR_REG)) == 1) {
+ printk("success\n");
+ drive->failures = 0;
+ } else {
+ drive->failures++;
+ printk("master: ");
+ switch (tmp & 0x7f) {
+ case 1: printk("passed");
+ break;
+ case 2: printk("formatter device error");
+ break;
+ case 3: printk("sector buffer error");
+ break;
+ case 4: printk("ECC circuitry error");
+ break;
+ case 5: printk("controlling MPU error");
+ break;
+ default:printk("error (0x%02x?)", tmp);
+ }
+ if (tmp & 0x80)
+ printk("; slave: failed");
+ printk("\n");
+ }
+ }
+ hwgroup->polling = 0; /* done polling */
+ return ide_stopped;
+}
+
+static void check_dma_crc(ide_drive_t *drive)
+{
+#ifdef CONFIG_BLK_DEV_IDEDMA
+ if (drive->crc_count) {
+ (void) HWIF(drive)->ide_dma_off_quietly(drive);
+ ide_set_xfer_rate(drive, ide_auto_reduce_xfer(drive));
+ if (drive->current_speed >= XFER_SW_DMA_0)
+ (void) HWIF(drive)->ide_dma_on(drive);
+ } else
+ (void)__ide_dma_off(drive);
+#endif
+}
+
+static void ide_disk_pre_reset(ide_drive_t *drive)
+{
+ int legacy = (drive->id->cfs_enable_2 & 0x0400) ? 0 : 1;
+
+ drive->special.all = 0;
+ drive->special.b.set_geometry = legacy;
+ drive->special.b.recalibrate = legacy;
+ if (OK_TO_RESET_CONTROLLER)
+ drive->mult_count = 0;
+ if (!drive->keep_settings && !drive->using_dma)
+ drive->mult_req = 0;
+ if (drive->mult_req != drive->mult_count)
+ drive->special.b.set_multmode = 1;
+}
+
+static void pre_reset(ide_drive_t *drive)
+{
+ if (drive->media == ide_disk)
+ ide_disk_pre_reset(drive);
+ else
+ drive->post_reset = 1;
+
+ if (!drive->keep_settings) {
+ if (drive->using_dma) {
+ check_dma_crc(drive);
+ } else {
+ drive->unmask = 0;
+ drive->io_32bit = 0;
+ }
+ return;
+ }
+ if (drive->using_dma)
+ check_dma_crc(drive);
+
+ if (HWIF(drive)->pre_reset != NULL)
+ HWIF(drive)->pre_reset(drive);
+
+}
+
+/*
+ * do_reset1() attempts to recover a confused drive by resetting it.
+ * Unfortunately, resetting a disk drive actually resets all devices on
+ * the same interface, so it can really be thought of as resetting the
+ * interface rather than resetting the drive.
+ *
+ * ATAPI devices have their own reset mechanism which allows them to be
+ * individually reset without clobbering other devices on the same interface.
+ *
+ * Unfortunately, the IDE interface does not generate an interrupt to let
+ * us know when the reset operation has finished, so we must poll for this.
+ * Equally poor, though, is the fact that this may a very long time to complete,
+ * (up to 30 seconds worstcase). So, instead of busy-waiting here for it,
+ * we set a timer to poll at 50ms intervals.
+ */
+static ide_startstop_t do_reset1 (ide_drive_t *drive, int do_not_try_atapi)
+{
+ unsigned int unit;
+ unsigned long flags;
+ ide_hwif_t *hwif;
+ ide_hwgroup_t *hwgroup;
+
+ spin_lock_irqsave(&ide_lock, flags);
+ hwif = HWIF(drive);
+ hwgroup = HWGROUP(drive);
+
+ /* We must not reset with running handlers */
+ if(hwgroup->handler != NULL)
+ BUG();
+
+ /* For an ATAPI device, first try an ATAPI SRST. */
+ if (drive->media != ide_disk && !do_not_try_atapi) {
+ pre_reset(drive);
+ SELECT_DRIVE(drive);
+ udelay (20);
+ hwif->OUTB(WIN_SRST, IDE_COMMAND_REG);
+ hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
+ hwgroup->polling = 1;
+ __ide_set_handler(drive, &atapi_reset_pollfunc, HZ/20, NULL);
+ spin_unlock_irqrestore(&ide_lock, flags);
+ return ide_started;
+ }
+
+ /*
+ * First, reset any device state data we were maintaining
+ * for any of the drives on this interface.
+ */
+ for (unit = 0; unit < MAX_DRIVES; ++unit)
+ pre_reset(&hwif->drives[unit]);
+
+#if OK_TO_RESET_CONTROLLER
+ if (!IDE_CONTROL_REG) {
+ spin_unlock_irqrestore(&ide_lock, flags);
+ return ide_stopped;
+ }
+
+ /*
+ * Note that we also set nIEN while resetting the device,
+ * to mask unwanted interrupts from the interface during the reset.
+ * However, due to the design of PC hardware, this will cause an
+ * immediate interrupt due to the edge transition it produces.
+ * This single interrupt gives us a "fast poll" for drives that
+ * recover from reset very quickly, saving us the first 50ms wait time.
+ */
+ /* set SRST and nIEN */
+ hwif->OUTBSYNC(drive, drive->ctl|6,IDE_CONTROL_REG);
+ /* more than enough time */
+ udelay(10);
+ if (drive->quirk_list == 2) {
+ /* clear SRST and nIEN */
+ hwif->OUTBSYNC(drive, drive->ctl, IDE_CONTROL_REG);
+ } else {
+ /* clear SRST, leave nIEN */
+ hwif->OUTBSYNC(drive, drive->ctl|2, IDE_CONTROL_REG);
+ }
+ /* more than enough time */
+ udelay(10);
+ hwgroup->poll_timeout = jiffies + WAIT_WORSTCASE;
+ hwgroup->polling = 1;
+ __ide_set_handler(drive, &reset_pollfunc, HZ/20, NULL);
+
+ /*
+ * Some weird controller like resetting themselves to a strange
+ * state when the disks are reset this way. At least, the Winbond
+ * 553 documentation says that
+ */
+ if (hwif->resetproc != NULL) {
+ hwif->resetproc(drive);
+ }
+
+#endif /* OK_TO_RESET_CONTROLLER */
+
+ spin_unlock_irqrestore(&ide_lock, flags);
+ return ide_started;
+}
+
+/*
+ * ide_do_reset() is the entry point to the drive/interface reset code.
+ */
+
+ide_startstop_t ide_do_reset (ide_drive_t *drive)
+{
+ return do_reset1(drive, 0);
+}
+
+EXPORT_SYMBOL(ide_do_reset);
+
+/*
+ * ide_wait_not_busy() waits for the currently selected device on the hwif
+ * to report a non-busy status, see comments in probe_hwif().
+ */
+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->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
+ if ((stat & BUSY_STAT) == 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;
+ }
+ return -EBUSY;
+}
+
+EXPORT_SYMBOL_GPL(ide_wait_not_busy);
+