/*
- * linux/drivers/ide/ide-probe.c Version 1.11 Mar 05, 2003
- *
- * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
+ * Copyright (C) 1994-1998 Linus Torvalds & authors (see below)
+ * Copyright (C) 2005, 2007 Bartlomiej Zolnierkiewicz
*/
/*
*
* This is the IDE probe module, as evolved from hd.c and ide.c.
*
- * Version 1.00 move drive probing code from ide.c to ide-probe.c
- * Version 1.01 fix compilation problem for m68k
- * Version 1.02 increase WAIT_PIDENTIFY to avoid CD-ROM locking at boot
- * by Andrea Arcangeli
- * Version 1.03 fix for (hwif->chipset == ide_4drives)
- * Version 1.04 fixed buggy treatments of known flash memory cards
- *
- * Version 1.05 fix for (hwif->chipset == ide_pdc4030)
- * added ide6/7/8/9
- * allowed for secondary flash card to be detectable
- * with new flag : drive->ata_flash : 1;
- * Version 1.06 stream line request queue and prep for cascade project.
- * Version 1.07 max_sect <= 255; slower disks would get behind and
- * then fall over when they get to 256. Paul G.
- * Version 1.10 Update set for new IDE. drive->id is now always
- * valid after probe time even with noprobe
+ * -- increase WAIT_PIDENTIFY to avoid CD-ROM locking at boot
+ * by Andrea Arcangeli
*/
#include <linux/module.h>
#ifdef CONFIG_IDEDISK_MULTI_MODE
id->multsect = ((id->max_multsect/2) > 1) ? id->max_multsect : 0;
id->multsect_valid = id->multsect ? 1 : 0;
- drive->mult_req = id->multsect_valid ? id->max_multsect : INITIAL_MULT_COUNT;
+ drive->mult_req = id->multsect_valid ? id->max_multsect : 0;
drive->special.b.set_multmode = drive->mult_req ? 1 : 0;
#else /* original, pre IDE-NFG, per request of AC */
- drive->mult_req = INITIAL_MULT_COUNT;
+ drive->mult_req = 0;
if (drive->mult_req > id->max_multsect)
drive->mult_req = id->max_multsect;
if (drive->mult_req || ((id->multsect_valid & 1) && id->multsect))
drive->id_read = 1;
local_irq_enable();
+#ifdef DEBUG
+ printk(KERN_INFO "%s: dumping identify data\n", drive->name);
+ ide_dump_identify((u8 *)id);
+#endif
ide_fix_driveid(id);
#if defined (CONFIG_SCSI_EATA_PIO) || defined (CONFIG_SCSI_EATA)
drive->media = ide_disk;
printk("%s DISK drive\n", (id->config == 0x848a) ? "CFA" : "ATA" );
- QUIRK_LIST(drive);
+
return;
err_misc:
* the irq handler isn't expecting.
*/
if (IDE_CONTROL_REG) {
- u8 ctl = drive->ctl | 2;
if (!hwif->irq) {
autoprobe = 1;
cookie = probe_irq_on();
- /* enable device irq */
- ctl &= ~2;
}
- hwif->OUTB(ctl, IDE_CONTROL_REG);
+ ide_set_irq(drive, autoprobe);
}
retval = actual_try_to_identify(drive, cmd);
if (autoprobe) {
int irq;
- /* mask device irq */
- hwif->OUTB(drive->ctl|2, IDE_CONTROL_REG);
+
+ ide_set_irq(drive, 0);
/* clear drive IRQ */
(void) hwif->INB(IDE_STATUS_REG);
udelay(5);
return retval;
}
+static int ide_busy_sleep(ide_hwif_t *hwif)
+{
+ unsigned long timeout = jiffies + WAIT_WORSTCASE;
+ u8 stat;
+
+ do {
+ msleep(50);
+ stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
+ if ((stat & BUSY_STAT) == 0)
+ return 0;
+ } while (time_before(jiffies, timeout));
+
+ return 1;
+}
/**
* do_probe - probe an IDE device
static int do_probe (ide_drive_t *drive, u8 cmd)
{
- int rc;
ide_hwif_t *hwif = HWIF(drive);
+ int rc;
+ u8 stat;
if (drive->present) {
/* avoid waiting for inappropriate probes */
/* failed: try again */
rc = try_to_identify(drive,cmd);
}
- if (hwif->INB(IDE_STATUS_REG) == (BUSY_STAT|READY_STAT))
+
+ stat = hwif->INB(IDE_STATUS_REG);
+
+ if (stat == (BUSY_STAT | READY_STAT))
return 4;
if ((rc == 1 && cmd == WIN_PIDENTIFY) &&
((drive->autotune == IDE_TUNE_DEFAULT) ||
(drive->autotune == IDE_TUNE_AUTO))) {
- unsigned long timeout;
- printk("%s: no response (status = 0x%02x), "
- "resetting drive\n", drive->name,
- hwif->INB(IDE_STATUS_REG));
+ printk(KERN_ERR "%s: no response (status = 0x%02x), "
+ "resetting drive\n", drive->name, stat);
msleep(50);
hwif->OUTB(drive->select.all, IDE_SELECT_REG);
msleep(50);
hwif->OUTB(WIN_SRST, IDE_COMMAND_REG);
- timeout = jiffies;
- while (((hwif->INB(IDE_STATUS_REG)) & BUSY_STAT) &&
- time_before(jiffies, timeout + WAIT_WORSTCASE))
- msleep(50);
+ (void)ide_busy_sleep(hwif);
rc = try_to_identify(drive, cmd);
}
+
+ /* ensure drive IRQ is clear */
+ stat = hwif->INB(IDE_STATUS_REG);
+
if (rc == 1)
- printk("%s: no response (status = 0x%02x)\n",
- drive->name, hwif->INB(IDE_STATUS_REG));
- /* ensure drive irq is clear */
- (void) hwif->INB(IDE_STATUS_REG);
+ printk(KERN_ERR "%s: no response (status = 0x%02x)\n",
+ drive->name, stat);
} else {
/* not present or maybe ATAPI */
rc = 3;
static void enable_nest (ide_drive_t *drive)
{
ide_hwif_t *hwif = HWIF(drive);
- unsigned long timeout;
+ u8 stat;
printk("%s: enabling %s -- ", hwif->name, drive->id->model);
SELECT_DRIVE(drive);
msleep(50);
hwif->OUTB(EXABYTE_ENABLE_NEST, IDE_COMMAND_REG);
- timeout = jiffies + WAIT_WORSTCASE;
- do {
- if (time_after(jiffies, timeout)) {
- printk("failed (timeout)\n");
- return;
- }
- msleep(50);
- } while ((hwif->INB(IDE_STATUS_REG)) & BUSY_STAT);
+
+ if (ide_busy_sleep(hwif)) {
+ printk(KERN_CONT "failed (timeout)\n");
+ return;
+ }
msleep(50);
- if (!OK_STAT((hwif->INB(IDE_STATUS_REG)), 0, BAD_STAT)) {
- printk("failed (status = 0x%02x)\n", hwif->INB(IDE_STATUS_REG));
- } else {
- printk("success\n");
- }
+ stat = hwif->INB(IDE_STATUS_REG);
+
+ if (!OK_STAT(stat, 0, BAD_STAT))
+ printk(KERN_CONT "failed (status = 0x%02x)\n", stat);
+ else
+ printk(KERN_CONT "success\n");
/* if !(success||timed-out) */
if (do_probe(drive, WIN_IDENTIFY) >= 2) {
complete(&hwif->gendev_rel_comp);
}
-static void hwif_register (ide_hwif_t *hwif)
+static void ide_register_port(ide_hwif_t *hwif)
{
int ret;
strlcpy(hwif->gendev.bus_id,hwif->name,BUS_ID_SIZE);
hwif->gendev.driver_data = hwif;
if (hwif->gendev.parent == NULL) {
- if (hwif->pci_dev)
- hwif->gendev.parent = &hwif->pci_dev->dev;
+ if (hwif->dev)
+ hwif->gendev.parent = hwif->dev;
else
/* Would like to do = &device_legacy */
hwif->gendev.parent = NULL;
__FUNCTION__, ret);
}
-static int wait_hwif_ready(ide_hwif_t *hwif)
+/**
+ * ide_port_wait_ready - wait for port to become ready
+ * @hwif: IDE port
+ *
+ * This is needed on some PPCs and a bunch of BIOS-less embedded
+ * platforms. Typical cases are:
+ *
+ * - The firmware hard reset the disk before booting the kernel,
+ * the drive is still doing it's poweron-reset sequence, that
+ * can take up to 30 seconds.
+ *
+ * - The firmware does nothing (or no firmware), the device is
+ * still in POST state (same as above actually).
+ *
+ * - Some CD/DVD/Writer combo drives tend to drive the bus during
+ * their reset sequence even when they are non-selected slave
+ * devices, thus preventing discovery of the main HD.
+ *
+ * Doing this wait-for-non-busy should not harm any existing
+ * configuration and fix some issues like the above.
+ *
+ * BenH.
+ *
+ * Returns 0 on success, error code (< 0) otherwise.
+ */
+
+static int ide_port_wait_ready(ide_hwif_t *hwif)
{
int unit, rc;
/* Ignore disks that we will not probe for later. */
if (!drive->noprobe || drive->present) {
SELECT_DRIVE(drive);
- hwif->OUTB(8, hwif->io_ports[IDE_CONTROL_OFFSET]);
+ ide_set_irq(drive, 1);
mdelay(2);
rc = ide_wait_not_busy(hwif, 35000);
if (rc)
/**
* ide_undecoded_slave - look for bad CF adapters
- * @hwif: interface
+ * @drive1: drive
*
* Analyse the drives on the interface and attempt to decide if we
* have the same drive viewed twice. This occurs with crap CF adapters
* and PCMCIA sometimes.
*/
-void ide_undecoded_slave(ide_hwif_t *hwif)
+void ide_undecoded_slave(ide_drive_t *drive1)
{
- ide_drive_t *drive0 = &hwif->drives[0];
- ide_drive_t *drive1 = &hwif->drives[1];
+ ide_drive_t *drive0 = &drive1->hwif->drives[0];
- if (drive0->present == 0 || drive1->present == 0)
+ if ((drive1->dn & 1) == 0 || drive0->present == 0)
return;
/* If the models don't match they are not the same product */
EXPORT_SYMBOL_GPL(ide_undecoded_slave);
-/*
- * This routine only knows how to look for drive units 0 and 1
- * on an interface, so any setting of MAX_DRIVES > 2 won't work here.
- */
-static void probe_hwif(ide_hwif_t *hwif)
+static int ide_probe_port(ide_hwif_t *hwif)
{
unsigned long flags;
unsigned int irqd;
- int unit;
+ int unit, rc = -ENODEV;
- if (hwif->noprobe)
- return;
+ BUG_ON(hwif->present);
- if ((hwif->chipset != ide_4drives || !hwif->mate || !hwif->mate->present) &&
- (ide_hwif_request_regions(hwif))) {
- u16 msgout = 0;
- for (unit = 0; unit < MAX_DRIVES; ++unit) {
- ide_drive_t *drive = &hwif->drives[unit];
- if (drive->present) {
- drive->present = 0;
- printk(KERN_ERR "%s: ERROR, PORTS ALREADY IN USE\n",
- drive->name);
- msgout = 1;
- }
- }
- if (!msgout)
- printk(KERN_ERR "%s: ports already in use, skipping probe\n",
- hwif->name);
- return;
- }
+ if (hwif->noprobe)
+ return -EACCES;
/*
* We must always disable IRQ, as probe_for_drive will assert IRQ, but
local_irq_set(flags);
- /* This is needed on some PPCs and a bunch of BIOS-less embedded
- * platforms. Typical cases are:
- *
- * - The firmware hard reset the disk before booting the kernel,
- * the drive is still doing it's poweron-reset sequence, that
- * can take up to 30 seconds
- * - The firmware does nothing (or no firmware), the device is
- * still in POST state (same as above actually).
- * - Some CD/DVD/Writer combo drives tend to drive the bus during
- * their reset sequence even when they are non-selected slave
- * devices, thus preventing discovery of the main HD
- *
- * Doing this wait-for-busy should not harm any existing configuration
- * (at least things won't be worse than what current code does, that
- * is blindly go & talk to the drive) and fix some issues like the
- * above.
- *
- * BenH.
- */
- if (wait_hwif_ready(hwif) == -EBUSY)
+ if (ide_port_wait_ready(hwif) == -EBUSY)
printk(KERN_DEBUG "%s: Wait for ready failed before probe !\n", hwif->name);
/*
ide_drive_t *drive = &hwif->drives[unit];
drive->dn = (hwif->channel ? 2 : 0) + unit;
(void) probe_for_drive(drive);
- if (drive->present && !hwif->present) {
- hwif->present = 1;
- if (hwif->chipset != ide_4drives ||
- !hwif->mate ||
- !hwif->mate->present) {
- hwif_register(hwif);
- }
- }
+ if (drive->present)
+ rc = 0;
}
if (hwif->io_ports[IDE_CONTROL_OFFSET] && hwif->reset) {
- unsigned long timeout = jiffies + WAIT_WORSTCASE;
- u8 stat;
-
printk(KERN_WARNING "%s: reset\n", hwif->name);
hwif->OUTB(12, hwif->io_ports[IDE_CONTROL_OFFSET]);
udelay(10);
hwif->OUTB(8, hwif->io_ports[IDE_CONTROL_OFFSET]);
- do {
- msleep(50);
- stat = hwif->INB(hwif->io_ports[IDE_STATUS_OFFSET]);
- } while ((stat & BUSY_STAT) && time_after(timeout, jiffies));
-
+ (void)ide_busy_sleep(hwif);
}
local_irq_restore(flags);
/*
if (irqd)
enable_irq(irqd);
- if (!hwif->present) {
- ide_hwif_release_regions(hwif);
- return;
- }
+ return rc;
+}
- if (hwif->fixup)
- hwif->fixup(hwif);
+static void ide_port_tune_devices(ide_hwif_t *hwif)
+{
+ int unit;
+
+ for (unit = 0; unit < MAX_DRIVES; unit++) {
+ ide_drive_t *drive = &hwif->drives[unit];
+
+ if (drive->present && hwif->quirkproc)
+ hwif->quirkproc(drive);
+ }
for (unit = 0; unit < MAX_DRIVES; ++unit) {
ide_drive_t *drive = &hwif->drives[unit];
drive->nice1 = 1;
- if (hwif->ide_dma_on) {
- /*
- * Force DMAing for the beginning of the check.
- * Some chipsets appear to do interesting
- * things, if not checked and cleared.
- * PARANOIA!!!
- */
- hwif->dma_off_quietly(drive);
+ if (hwif->dma_host_set)
ide_set_dma(drive);
- }
}
}
for (unit = 0; unit < MAX_DRIVES; ++unit) {
ide_drive_t *drive = &hwif->drives[unit];
- if (hwif->no_io_32bit)
+ if (hwif->host_flags & IDE_HFLAG_NO_IO_32BIT)
drive->no_io_32bit = 1;
else
drive->no_io_32bit = drive->id->dword_io ? 1 : 0;
}
}
-static int hwif_init(ide_hwif_t *hwif);
-static void hwif_register_devices(ide_hwif_t *hwif);
-
-static int probe_hwif_init(ide_hwif_t *hwif)
-{
- probe_hwif(hwif);
-
- if (!hwif_init(hwif)) {
- printk(KERN_INFO "%s: failed to initialize IDE interface\n",
- hwif->name);
- return -1;
- }
-
- if (hwif->present)
- hwif_register_devices(hwif);
-
- return 0;
-}
-
#if MAX_HWIFS > 1
/*
* save_match() is used to simplify logic in init_irq() below.
q->queuedata = drive;
blk_queue_segment_boundary(q, 0xffff);
- if (!hwif->rqsize) {
- if ((hwif->host_flags & IDE_HFLAG_NO_LBA48) ||
- (hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA))
- hwif->rqsize = 256;
- else
- hwif->rqsize = 65536;
- }
if (hwif->rqsize < max_sectors)
max_sectors = hwif->rqsize;
blk_queue_max_sectors(q, max_sectors);
return 0;
}
+static void ide_add_drive_to_hwgroup(ide_drive_t *drive)
+{
+ ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
+
+ spin_lock_irq(&ide_lock);
+ if (!hwgroup->drive) {
+ /* first drive for hwgroup. */
+ drive->next = drive;
+ hwgroup->drive = drive;
+ hwgroup->hwif = HWIF(hwgroup->drive);
+ } else {
+ drive->next = hwgroup->drive->next;
+ hwgroup->drive->next = drive;
+ }
+ spin_unlock_irq(&ide_lock);
+}
+
+/*
+ * For any present drive:
+ * - allocate the block device queue
+ * - link drive into the hwgroup
+ */
+static void ide_port_setup_devices(ide_hwif_t *hwif)
+{
+ int i;
+
+ for (i = 0; i < MAX_DRIVES; i++) {
+ ide_drive_t *drive = &hwif->drives[i];
+
+ if (!drive->present)
+ continue;
+
+ if (ide_init_queue(drive)) {
+ printk(KERN_ERR "ide: failed to init %s\n",
+ drive->name);
+ continue;
+ }
+
+ ide_add_drive_to_hwgroup(drive);
+ }
+}
+
/*
* This routine sets up the irq for an ide interface, and creates a new
* hwgroup for the irq/hwif if none was previously assigned.
* Much of the code is for correctly detecting/handling irq sharing
* and irq serialization situations. This is somewhat complex because
* it handles static as well as dynamic (PCMCIA) IDE interfaces.
- *
- * The IRQF_DISABLED in sa_flags means ide_intr() is always entered with
- * interrupts completely disabled. This can be bad for interrupt latency,
- * but anything else has led to problems on some machines. We re-enable
- * interrupts as much as we can safely do in most places.
*/
static int init_irq (ide_hwif_t *hwif)
{
spin_lock_irq(&ide_lock);
hwif->next = hwgroup->hwif->next;
hwgroup->hwif->next = hwif;
+ BUG_ON(hwif->next == hwif);
spin_unlock_irq(&ide_lock);
} else {
- hwgroup = kmalloc_node(sizeof(ide_hwgroup_t),
- GFP_KERNEL | __GFP_ZERO,
- hwif_to_node(hwif->drives[0].hwif));
- if (!hwgroup)
- goto out_up;
+ hwgroup = kmalloc_node(sizeof(*hwgroup), GFP_KERNEL|__GFP_ZERO,
+ hwif_to_node(hwif));
+ if (hwgroup == NULL)
+ goto out_up;
hwif->hwgroup = hwgroup;
+ hwgroup->hwif = hwif->next = hwif;
- hwgroup->hwif = hwif->next = hwif;
- hwgroup->rq = NULL;
- hwgroup->handler = NULL;
- hwgroup->drive = NULL;
- hwgroup->busy = 0;
init_timer(&hwgroup->timer);
hwgroup->timer.function = &ide_timer_expiry;
hwgroup->timer.data = (unsigned long) hwgroup;
* Allocate the irq, if not already obtained for another hwif
*/
if (!match || match->irq != hwif->irq) {
- int sa = IRQF_DISABLED;
+ int sa = 0;
#if defined(__mc68000__) || defined(CONFIG_APUS)
sa = IRQF_SHARED;
#endif /* __mc68000__ || CONFIG_APUS */
- if (IDE_CHIPSET_IS_PCI(hwif->chipset)) {
+ if (IDE_CHIPSET_IS_PCI(hwif->chipset))
sa = IRQF_SHARED;
-#ifndef CONFIG_IDEPCI_SHARE_IRQ
- sa |= IRQF_DISABLED;
-#endif /* CONFIG_IDEPCI_SHARE_IRQ */
- }
if (hwif->io_ports[IDE_CONTROL_OFFSET])
/* clear nIEN */
goto out_unlink;
}
- /*
- * For any present drive:
- * - allocate the block device queue
- * - link drive into the hwgroup
- */
- for (index = 0; index < MAX_DRIVES; ++index) {
- ide_drive_t *drive = &hwif->drives[index];
- if (!drive->present)
- continue;
- if (ide_init_queue(drive)) {
- printk(KERN_ERR "ide: failed to init %s\n",drive->name);
- continue;
- }
- spin_lock_irq(&ide_lock);
- if (!hwgroup->drive) {
- /* first drive for hwgroup. */
- drive->next = drive;
- hwgroup->drive = drive;
- hwgroup->hwif = HWIF(hwgroup->drive);
- } else {
- drive->next = hwgroup->drive->next;
- hwgroup->drive->next = drive;
- }
- spin_unlock_irq(&ide_lock);
+ if (!hwif->rqsize) {
+ if ((hwif->host_flags & IDE_HFLAG_NO_LBA48) ||
+ (hwif->host_flags & IDE_HFLAG_NO_LBA48_DMA))
+ hwif->rqsize = 256;
+ else
+ hwif->rqsize = 65536;
}
#if !defined(__mc68000__) && !defined(CONFIG_APUS)
printk(" (%sed with %s)",
hwif->sharing_irq ? "shar" : "serializ", match->name);
printk("\n");
+
+ ide_port_setup_devices(hwif);
+
mutex_unlock(&ide_cfg_mtx);
return 0;
out_unlink:
- spin_lock_irq(&ide_lock);
- if (hwif->next == hwif) {
- BUG_ON(match);
- BUG_ON(hwgroup->hwif != hwif);
- kfree(hwgroup);
- } else {
- ide_hwif_t *g;
- g = hwgroup->hwif;
- while (g->next != hwif)
- g = g->next;
- g->next = hwif->next;
- if (hwgroup->hwif == hwif) {
- /* Impossible. */
- printk(KERN_ERR "Duh. Uninitialized hwif listed as active hwif.\n");
- hwgroup->hwif = g;
- }
- BUG_ON(hwgroup->hwif == hwif);
- }
- spin_unlock_irq(&ide_lock);
+ ide_remove_port_from_hwgroup(hwif);
out_up:
mutex_unlock(&ide_cfg_mtx);
return 1;
{
struct gendisk *p = data;
*part &= (1 << PARTN_BITS) - 1;
- return &p->kobj;
+ return &p->dev.kobj;
}
static int exact_lock(dev_t dev, void *data)
complete(&drive->gendev_rel_comp);
}
-/*
- * init_gendisk() (as opposed to ide_geninit) is called for each major device,
- * after probing for drives, to allocate partition tables and other data
- * structures needed for the routines in genhd.c. ide_geninit() gets called
- * somewhat later, during the partition check.
- */
-static void init_gendisk (ide_hwif_t *hwif)
-{
- unsigned int unit;
-
- for (unit = 0; unit < MAX_DRIVES; ++unit) {
- ide_drive_t * drive = &hwif->drives[unit];
- ide_add_generic_settings(drive);
- snprintf(drive->gendev.bus_id,BUS_ID_SIZE,"%u.%u",
- hwif->index,unit);
- drive->gendev.parent = &hwif->gendev;
- drive->gendev.bus = &ide_bus_type;
- drive->gendev.driver_data = drive;
- drive->gendev.release = drive_release_dev;
- }
- blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS,
- THIS_MODULE, ata_probe, ata_lock, hwif);
-}
-
static int hwif_init(ide_hwif_t *hwif)
{
int old_irq;
- /* Return success if no device is connected */
- if (!hwif->present)
- return 1;
-
if (!hwif->irq) {
if (!(hwif->irq = ide_default_irq(hwif->io_ports[IDE_DATA_OFFSET])))
{
printk("%s: DISABLED, NO IRQ\n", hwif->name);
- return (hwif->present = 0);
+ return 0;
}
}
#ifdef CONFIG_BLK_DEV_HD
if (hwif->irq == HD_IRQ && hwif->io_ports[IDE_DATA_OFFSET] != HD_DATA) {
printk("%s: CANNOT SHARE IRQ WITH OLD "
"HARDDISK DRIVER (hd.c)\n", hwif->name);
- return (hwif->present = 0);
+ return 0;
}
#endif /* CONFIG_BLK_DEV_HD */
- /* we set it back to 1 if all is ok below */
- hwif->present = 0;
-
if (register_blkdev(hwif->major, hwif->name))
return 0;
hwif->name, hwif->irq);
done:
- init_gendisk(hwif);
-
- ide_acpi_init(hwif);
-
- hwif->present = 1; /* success */
+ blk_register_region(MKDEV(hwif->major, 0), MAX_DRIVES << PARTN_BITS,
+ THIS_MODULE, ata_probe, ata_lock, hwif);
return 1;
out:
for (i = 0; i < MAX_DRIVES; i++) {
ide_drive_t *drive = &hwif->drives[i];
+ struct device *dev = &drive->gendev;
+ int ret;
- if (drive->present) {
- int ret = device_register(&drive->gendev);
+ if (!drive->present)
+ continue;
- if (ret < 0)
- printk(KERN_WARNING "IDE: %s: "
- "device_register error: %d\n",
- __FUNCTION__, ret);
- }
+ ide_add_generic_settings(drive);
+
+ snprintf(dev->bus_id, BUS_ID_SIZE, "%u.%u", hwif->index, i);
+ dev->parent = &hwif->gendev;
+ dev->bus = &ide_bus_type;
+ dev->driver_data = drive;
+ dev->release = drive_release_dev;
+
+ ret = device_register(dev);
+ if (ret < 0)
+ printk(KERN_WARNING "IDE: %s: device_register error: "
+ "%d\n", __func__, ret);
}
}
-int ideprobe_init (void)
+static void ide_port_init_devices(ide_hwif_t *hwif)
{
- unsigned int index;
- int probe[MAX_HWIFS];
-
- memset(probe, 0, MAX_HWIFS * sizeof(int));
- for (index = 0; index < MAX_HWIFS; ++index)
- probe[index] = !ide_hwifs[index].present;
-
- for (index = 0; index < MAX_HWIFS; ++index)
- if (probe[index])
- probe_hwif(&ide_hwifs[index]);
- for (index = 0; index < MAX_HWIFS; ++index)
- if (probe[index])
- hwif_init(&ide_hwifs[index]);
- for (index = 0; index < MAX_HWIFS; ++index) {
- if (probe[index]) {
- ide_hwif_t *hwif = &ide_hwifs[index];
- if (!hwif->present)
- continue;
- if (hwif->chipset == ide_unknown || hwif->chipset == ide_forced)
- hwif->chipset = ide_generic;
- hwif_register_devices(hwif);
- }
+ int i;
+
+ for (i = 0; i < MAX_DRIVES; i++) {
+ ide_drive_t *drive = &hwif->drives[i];
+
+ if (hwif->host_flags & IDE_HFLAG_IO_32BIT)
+ drive->io_32bit = 1;
+ if (hwif->host_flags & IDE_HFLAG_UNMASK_IRQS)
+ drive->unmask = 1;
+ if (hwif->host_flags & IDE_HFLAG_NO_UNMASK_IRQS)
+ drive->no_unmask = 1;
+ if ((hwif->host_flags & IDE_HFLAG_NO_AUTOTUNE) == 0)
+ drive->autotune = 1;
}
- for (index = 0; index < MAX_HWIFS; ++index)
- if (probe[index])
- ide_proc_register_port(&ide_hwifs[index]);
- return 0;
+
+ if (hwif->port_init_devs)
+ hwif->port_init_devs(hwif);
}
-EXPORT_SYMBOL_GPL(ideprobe_init);
+static void ide_init_port(ide_hwif_t *hwif, unsigned int port,
+ const struct ide_port_info *d)
+{
+ if (d->chipset != ide_etrax100)
+ hwif->channel = port;
+
+ if (d->chipset)
+ hwif->chipset = d->chipset;
+
+ if (d->init_iops)
+ d->init_iops(hwif);
+
+ if ((d->host_flags & IDE_HFLAG_NO_DMA) == 0)
+ ide_hwif_setup_dma(hwif, d);
+
+ if ((!hwif->irq && (d->host_flags & IDE_HFLAG_LEGACY_IRQS)) ||
+ (d->host_flags & IDE_HFLAG_FORCE_LEGACY_IRQS))
+ hwif->irq = port ? 15 : 14;
+
+ hwif->host_flags = d->host_flags;
+ hwif->pio_mask = d->pio_mask;
+
+ if ((d->host_flags & IDE_HFLAG_SERIALIZE) && hwif->mate)
+ hwif->mate->serialized = hwif->serialized = 1;
+
+ hwif->swdma_mask = d->swdma_mask;
+ hwif->mwdma_mask = d->mwdma_mask;
+ hwif->ultra_mask = d->udma_mask;
-int ide_device_add(u8 idx[4])
+ /* reset DMA masks only for SFF-style DMA controllers */
+ if ((d->host_flags && IDE_HFLAG_NO_DMA) == 0 && hwif->dma_base == 0)
+ hwif->swdma_mask = hwif->mwdma_mask = hwif->ultra_mask = 0;
+
+ if (d->host_flags & IDE_HFLAG_RQSIZE_256)
+ hwif->rqsize = 256;
+
+ /* call chipset specific routine for each enabled port */
+ if (d->init_hwif)
+ d->init_hwif(hwif);
+
+ if (hwif->cable_detect && (hwif->ultra_mask & 0x78)) {
+ if (hwif->cbl != ATA_CBL_PATA40_SHORT)
+ hwif->cbl = hwif->cable_detect(hwif);
+ }
+}
+
+int ide_device_add_all(u8 *idx, const struct ide_port_info *d)
{
+ ide_hwif_t *hwif, *mate = NULL;
int i, rc = 0;
- for (i = 0; i < 4; i++) {
- if (idx[i] != 0xff)
- rc |= probe_hwif_init(&ide_hwifs[idx[i]]);
+ for (i = 0; i < MAX_HWIFS; i++) {
+ if (d == NULL || idx[i] == 0xff) {
+ mate = NULL;
+ continue;
+ }
+
+ hwif = &ide_hwifs[idx[i]];
+
+ if (d->chipset != ide_etrax100 && (i & 1) && mate) {
+ hwif->mate = mate;
+ mate->mate = hwif;
+ }
+
+ mate = (i & 1) ? NULL : hwif;
+
+ ide_init_port(hwif, i & 1, d);
+ ide_port_init_devices(hwif);
+ }
+
+ for (i = 0; i < MAX_HWIFS; i++) {
+ if (idx[i] == 0xff)
+ continue;
+
+ hwif = &ide_hwifs[idx[i]];
+
+ if ((hwif->chipset != ide_4drives || !hwif->mate ||
+ !hwif->mate->present) && ide_hwif_request_regions(hwif)) {
+ printk(KERN_ERR "%s: ports already in use, "
+ "skipping probe\n", hwif->name);
+ continue;
+ }
+
+ if (ide_probe_port(hwif) < 0) {
+ ide_hwif_release_regions(hwif);
+ continue;
+ }
+
+ hwif->present = 1;
+
+ if (hwif->chipset != ide_4drives || !hwif->mate ||
+ !hwif->mate->present)
+ ide_register_port(hwif);
+
+ ide_port_tune_devices(hwif);
+ }
+
+ for (i = 0; i < MAX_HWIFS; i++) {
+ if (idx[i] == 0xff)
+ continue;
+
+ hwif = &ide_hwifs[idx[i]];
+
+ if (!hwif->present)
+ continue;
+
+ if (hwif_init(hwif) == 0) {
+ printk(KERN_INFO "%s: failed to initialize IDE "
+ "interface\n", hwif->name);
+ hwif->present = 0;
+ rc = -1;
+ continue;
+ }
+
+ ide_acpi_init(hwif);
+ ide_acpi_port_init_devices(hwif);
+ }
+
+ for (i = 0; i < MAX_HWIFS; i++) {
+ if (idx[i] == 0xff)
+ continue;
+
+ hwif = &ide_hwifs[idx[i]];
+
+ if (hwif->present) {
+ if (hwif->chipset == ide_unknown ||
+ hwif->chipset == ide_forced)
+ hwif->chipset = ide_generic;
+ hwif_register_devices(hwif);
+ }
}
- for (i = 0; i < 4; i++) {
- if (idx[i] != 0xff)
- ide_proc_register_port(&ide_hwifs[idx[i]]);
+ for (i = 0; i < MAX_HWIFS; i++) {
+ if (idx[i] == 0xff)
+ continue;
+
+ hwif = &ide_hwifs[idx[i]];
+
+ if (hwif->present) {
+ ide_proc_register_port(hwif);
+ ide_proc_port_register_devices(hwif);
+ }
}
return rc;
}
+EXPORT_SYMBOL_GPL(ide_device_add_all);
+int ide_device_add(u8 idx[4], const struct ide_port_info *d)
+{
+ u8 idx_all[MAX_HWIFS];
+ int i;
+
+ for (i = 0; i < MAX_HWIFS; i++)
+ idx_all[i] = (i < 4) ? idx[i] : 0xff;
+
+ return ide_device_add_all(idx_all, d);
+}
EXPORT_SYMBOL_GPL(ide_device_add);
projects / cascardo / linux.git / blobdiff