EXPORT_SYMBOL(ide_hwifs);
-extern ide_driver_t idedefault_driver;
-static void setup_driver_defaults(ide_driver_t *driver);
-
/*
* Do not even *think* about calling this!
*/
drive->max_failures = IDE_DEFAULT_MAX_FAILURES;
drive->using_dma = 0;
drive->is_flash = 0;
- drive->driver = &idedefault_driver;
drive->vdma = 0;
INIT_LIST_HEAD(&drive->list);
sema_init(&drive->gendev_rel_sem, 0);
return; /* already initialized */
magic_cookie = 0;
- setup_driver_defaults(&idedefault_driver);
-
/* Initialise all interface structures */
for (index = 0; index < MAX_HWIFS; ++index) {
hwif = &ide_hwifs[index];
return system_bus_speed;
}
-static int ide_open (struct inode * inode, struct file * filp)
-{
- return -ENXIO;
-}
-
-/*
- * drives_lock protects the list of drives, drivers_lock the
- * list of drivers. Currently nobody takes both at once.
- */
-
-static DEFINE_SPINLOCK(drives_lock);
-static DEFINE_SPINLOCK(drivers_lock);
-static LIST_HEAD(drivers);
-
-/* Iterator for the driver list. */
-
-static void *m_start(struct seq_file *m, loff_t *pos)
-{
- struct list_head *p;
- loff_t l = *pos;
- spin_lock(&drivers_lock);
- list_for_each(p, &drivers)
- if (!l--)
- return list_entry(p, ide_driver_t, drivers);
- return NULL;
-}
-
-static void *m_next(struct seq_file *m, void *v, loff_t *pos)
-{
- struct list_head *p = ((ide_driver_t *)v)->drivers.next;
- (*pos)++;
- return p==&drivers ? NULL : list_entry(p, ide_driver_t, drivers);
-}
-
-static void m_stop(struct seq_file *m, void *v)
-{
- spin_unlock(&drivers_lock);
-}
-
-static int show_driver(struct seq_file *m, void *v)
-{
- ide_driver_t *driver = v;
- seq_printf(m, "%s version %s\n", driver->name, driver->version);
- return 0;
-}
-
-struct seq_operations ide_drivers_op = {
- .start = m_start,
- .next = m_next,
- .stop = m_stop,
- .show = show_driver
-};
-
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *proc_ide_root;
-
-static ide_proc_entry_t generic_subdriver_entries[] = {
- { "capacity", S_IFREG|S_IRUGO, proc_ide_read_capacity, NULL },
- { NULL, 0, NULL, NULL }
-};
#endif
static struct resource* hwif_request_region(ide_hwif_t *hwif,
ide_hwif_t *hwif, *g;
static ide_hwif_t tmp_hwif; /* protected by ide_cfg_sem */
ide_hwgroup_t *hwgroup;
- int irq_count = 0, unit, i;
+ int irq_count = 0, unit;
BUG_ON(index >= MAX_HWIFS);
goto abort;
for (unit = 0; unit < MAX_DRIVES; ++unit) {
drive = &hwif->drives[unit];
- if (!drive->present)
+ if (!drive->present) {
+ if (drive->devfs_name[0] != '\0') {
+ devfs_remove(drive->devfs_name);
+ drive->devfs_name[0] = '\0';
+ }
continue;
- if (drive->usage || DRIVER(drive)->busy)
- goto abort;
- drive->dead = 1;
+ }
+ spin_unlock_irq(&ide_lock);
+ device_unregister(&drive->gendev);
+ down(&drive->gendev_rel_sem);
+ spin_lock_irq(&ide_lock);
}
hwif->present = 0;
spin_unlock_irq(&ide_lock);
- for (unit = 0; unit < MAX_DRIVES; ++unit) {
- drive = &hwif->drives[unit];
- if (!drive->present)
- continue;
- DRIVER(drive)->cleanup(drive);
- }
-
destroy_proc_ide_interface(hwif);
hwgroup = hwif->hwgroup;
* Remove us from the hwgroup, and free
* the hwgroup if we were the only member
*/
- for (i = 0; i < MAX_DRIVES; ++i) {
- drive = &hwif->drives[i];
- if (drive->devfs_name[0] != '\0') {
- devfs_remove(drive->devfs_name);
- drive->devfs_name[0] = '\0';
- }
- if (!drive->present)
- continue;
- if (drive == drive->next) {
- /* special case: last drive from hwgroup. */
- BUG_ON(hwgroup->drive != drive);
- hwgroup->drive = NULL;
- } else {
- ide_drive_t *walk;
-
- walk = hwgroup->drive;
- while (walk->next != drive)
- walk = walk->next;
- walk->next = drive->next;
- if (hwgroup->drive == drive) {
- hwgroup->drive = drive->next;
- hwgroup->hwif = HWIF(hwgroup->drive);
- }
- }
- BUG_ON(hwgroup->drive == drive);
- if (drive->id != NULL) {
- kfree(drive->id);
- drive->id = NULL;
- }
- drive->present = 0;
- /* Messed up locking ... */
- spin_unlock_irq(&ide_lock);
- blk_cleanup_queue(drive->queue);
- device_unregister(&drive->gendev);
- down(&drive->gendev_rel_sem);
- spin_lock_irq(&ide_lock);
- drive->queue = NULL;
- }
if (hwif->next == hwif) {
BUG_ON(hwgroup->hwif != hwif);
kfree(hwgroup);
* Remove us from the kernel's knowledge
*/
blk_unregister_region(MKDEV(hwif->major, 0), MAX_DRIVES<<PARTN_BITS);
- for (i = 0; i < MAX_DRIVES; i++) {
- struct gendisk *disk = hwif->drives[i].disk;
- hwif->drives[i].disk = NULL;
- put_disk(disk);
- }
kfree(hwif->sg_table);
unregister_blkdev(hwif->major, hwif->name);
spin_lock_irq(&ide_lock);
DECLARE_MUTEX(ide_setting_sem);
/**
- * ide_add_setting - add an ide setting option
+ * __ide_add_setting - add an ide setting option
* @drive: drive to use
* @name: setting name
* @rw: true if the function is read write
* @div_factor: divison scale
* @data: private data field
* @set: setting
+ * @auto_remove: setting auto removal flag
*
* Removes the setting named from the device if it is present.
* The function takes the settings_lock to protect against
* a driver is attached we assume the driver settings are auto
* remove.
*/
-
-int ide_add_setting (ide_drive_t *drive, const char *name, int rw, int read_ioctl, int write_ioctl, int data_type, int min, int max, int mul_factor, int div_factor, void *data, ide_procset_t *set)
+
+static int __ide_add_setting(ide_drive_t *drive, const char *name, int rw, int read_ioctl, int write_ioctl, int data_type, int min, int max, int mul_factor, int div_factor, void *data, ide_procset_t *set, int auto_remove)
{
ide_settings_t **p = (ide_settings_t **) &drive->settings, *setting = NULL;
setting->set = set;
setting->next = *p;
- if (drive->driver != &idedefault_driver)
+ if (auto_remove)
setting->auto_remove = 1;
*p = setting;
up(&ide_setting_sem);
return -1;
}
+int ide_add_setting(ide_drive_t *drive, const char *name, int rw, int read_ioctl, int write_ioctl, int data_type, int min, int max, int mul_factor, int div_factor, void *data, ide_procset_t *set)
+{
+ return __ide_add_setting(drive, name, rw, read_ioctl, write_ioctl, data_type, min, max, mul_factor, div_factor, data, set, 1);
+}
+
EXPORT_SYMBOL(ide_add_setting);
/**
void ide_add_generic_settings (ide_drive_t *drive)
{
/*
- * drive setting name read/write access read ioctl write ioctl data type min max mul_factor div_factor data pointer set function
+ * drive setting name read/write access read ioctl write ioctl data type min max mul_factor div_factor data pointer set function
*/
- ide_add_setting(drive, "io_32bit", drive->no_io_32bit ? SETTING_READ : SETTING_RW, HDIO_GET_32BIT, HDIO_SET_32BIT, TYPE_BYTE, 0, 1 + (SUPPORT_VLB_SYNC << 1), 1, 1, &drive->io_32bit, set_io_32bit);
- ide_add_setting(drive, "keepsettings", SETTING_RW, HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL);
- ide_add_setting(drive, "nice1", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL);
- ide_add_setting(drive, "pio_mode", SETTING_WRITE, -1, HDIO_SET_PIO_MODE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode);
- ide_add_setting(drive, "unmaskirq", drive->no_unmask ? SETTING_READ : SETTING_RW, HDIO_GET_UNMASKINTR, HDIO_SET_UNMASKINTR, TYPE_BYTE, 0, 1, 1, 1, &drive->unmask, NULL);
- ide_add_setting(drive, "using_dma", SETTING_RW, HDIO_GET_DMA, HDIO_SET_DMA, TYPE_BYTE, 0, 1, 1, 1, &drive->using_dma, set_using_dma);
- ide_add_setting(drive, "init_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL);
- ide_add_setting(drive, "current_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate);
- ide_add_setting(drive, "number", SETTING_RW, -1, -1, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL);
+ __ide_add_setting(drive, "io_32bit", drive->no_io_32bit ? SETTING_READ : SETTING_RW, HDIO_GET_32BIT, HDIO_SET_32BIT, TYPE_BYTE, 0, 1 + (SUPPORT_VLB_SYNC << 1), 1, 1, &drive->io_32bit, set_io_32bit, 0);
+ __ide_add_setting(drive, "keepsettings", SETTING_RW, HDIO_GET_KEEPSETTINGS, HDIO_SET_KEEPSETTINGS, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL, 0);
+ __ide_add_setting(drive, "nice1", SETTING_RW, -1, -1, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL, 0);
+ __ide_add_setting(drive, "pio_mode", SETTING_WRITE, -1, HDIO_SET_PIO_MODE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode, 0);
+ __ide_add_setting(drive, "unmaskirq", drive->no_unmask ? SETTING_READ : SETTING_RW, HDIO_GET_UNMASKINTR, HDIO_SET_UNMASKINTR, TYPE_BYTE, 0, 1, 1, 1, &drive->unmask, NULL, 0);
+ __ide_add_setting(drive, "using_dma", SETTING_RW, HDIO_GET_DMA, HDIO_SET_DMA, TYPE_BYTE, 0, 1, 1, 1, &drive->using_dma, set_using_dma, 0);
+ __ide_add_setting(drive, "init_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL, 0);
+ __ide_add_setting(drive, "current_speed", SETTING_RW, -1, -1, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate, 0);
+ __ide_add_setting(drive, "number", SETTING_RW, -1, -1, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL, 0);
}
/**
EXPORT_SYMBOL(system_bus_clock);
-/*
- * Locking is badly broken here - since way back. That sucker is
- * root-only, but that's not an excuse... The real question is what
- * exclusion rules do we want here.
- */
-int ide_replace_subdriver (ide_drive_t *drive, const char *driver)
-{
- if (!drive->present || drive->usage || drive->dead)
- goto abort;
- if (DRIVER(drive)->cleanup(drive))
- goto abort;
- strlcpy(drive->driver_req, driver, sizeof(drive->driver_req));
- if (ata_attach(drive)) {
- spin_lock(&drives_lock);
- list_del_init(&drive->list);
- spin_unlock(&drives_lock);
- drive->driver_req[0] = 0;
- ata_attach(drive);
- } else {
- drive->driver_req[0] = 0;
- }
- if (DRIVER(drive)!= &idedefault_driver && !strcmp(DRIVER(drive)->name, driver))
- return 0;
-abort:
- return 1;
-}
-
-/**
- * ata_attach - attach an ATA/ATAPI device
- * @drive: drive to attach
- *
- * Takes a drive that is as yet not assigned to any midlayer IDE
- * driver (or is assigned to the default driver) and figures out
- * which driver would like to own it. If nobody claims the drive
- * then it is automatically attached to the default driver used for
- * unclaimed objects.
- *
- * A return of zero indicates attachment to a driver, of one
- * attachment to the default driver.
- *
- * Takes drivers_lock.
- */
-
-int ata_attach(ide_drive_t *drive)
-{
- struct list_head *p;
- spin_lock(&drivers_lock);
- list_for_each(p, &drivers) {
- ide_driver_t *driver = list_entry(p, ide_driver_t, drivers);
- if (!try_module_get(driver->owner))
- continue;
- spin_unlock(&drivers_lock);
- if (driver->attach(drive) == 0) {
- module_put(driver->owner);
- drive->gendev.driver = &driver->gen_driver;
- return 0;
- }
- spin_lock(&drivers_lock);
- module_put(driver->owner);
- }
- drive->gendev.driver = &idedefault_driver.gen_driver;
- spin_unlock(&drivers_lock);
- if(idedefault_driver.attach(drive) != 0)
- panic("ide: default attach failed");
- return 1;
-}
-
static int generic_ide_suspend(struct device *dev, pm_message_t state)
{
ide_drive_t *drive = dev->driver_data;
return ide_do_drive_cmd(drive, &rq, ide_head_wait);
}
-int generic_ide_ioctl(struct file *file, struct block_device *bdev,
+int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev,
unsigned int cmd, unsigned long arg)
{
- ide_drive_t *drive = bdev->bd_disk->private_data;
ide_settings_t *setting;
+ ide_driver_t *drv;
int err = 0;
void __user *p = (void __user *)arg;
if (arg != (arg & ((1 << IDE_NICE_DSC_OVERLAP) | (1 << IDE_NICE_1))))
return -EPERM;
drive->dsc_overlap = (arg >> IDE_NICE_DSC_OVERLAP) & 1;
- if (drive->dsc_overlap && !DRIVER(drive)->supports_dsc_overlap) {
+ drv = *(ide_driver_t **)bdev->bd_disk->private_data;
+ if (drive->dsc_overlap && !drv->supports_dsc_overlap) {
drive->dsc_overlap = 0;
return -EPERM;
}
case -4: /* "cdrom" */
drive->present = 1;
drive->media = ide_cdrom;
+ /* an ATAPI device ignores DRDY */
+ drive->ready_stat = 0;
hwif->noprobe = 0;
goto done;
case -5: /* "serialize" */
goto done;
case 3: /* cyl,head,sect */
drive->media = ide_disk;
+ drive->ready_stat = READY_STAT;
drive->cyl = drive->bios_cyl = vals[0];
drive->head = drive->bios_head = vals[1];
drive->sect = drive->bios_sect = vals[2];
#endif
}
-static ide_startstop_t default_do_request (ide_drive_t *drive, struct request *rq, sector_t block)
+void ide_register_subdriver(ide_drive_t *drive, ide_driver_t *driver)
{
- ide_end_request(drive, 0, 0);
- return ide_stopped;
-}
-
-static int default_end_request (ide_drive_t *drive, int uptodate, int nr_sects)
-{
- return ide_end_request(drive, uptodate, nr_sects);
-}
-
-static ide_startstop_t
-default_error(ide_drive_t *drive, struct request *rq, u8 stat, u8 err)
-{
- return __ide_error(drive, rq, stat, err);
-}
-
-static void default_pre_reset (ide_drive_t *drive)
-{
-}
-
-static sector_t default_capacity (ide_drive_t *drive)
-{
- return 0x7fffffff;
-}
-
-static ide_startstop_t default_special (ide_drive_t *drive)
-{
- special_t *s = &drive->special;
-
- s->all = 0;
- drive->mult_req = 0;
- return ide_stopped;
-}
-
-static ide_startstop_t default_abort(ide_drive_t *drive, struct request *rq)
-{
- return __ide_abort(drive, rq);
-}
-
-static ide_startstop_t default_start_power_step(ide_drive_t *drive,
- struct request *rq)
-{
- rq->pm->pm_step = ide_pm_state_completed;
- return ide_stopped;
-}
-
-static void setup_driver_defaults (ide_driver_t *d)
-{
- BUG_ON(d->attach == NULL || d->cleanup == NULL);
-
- if (d->do_request == NULL) d->do_request = default_do_request;
- if (d->end_request == NULL) d->end_request = default_end_request;
- if (d->error == NULL) d->error = default_error;
- if (d->abort == NULL) d->abort = default_abort;
- if (d->pre_reset == NULL) d->pre_reset = default_pre_reset;
- if (d->capacity == NULL) d->capacity = default_capacity;
- if (d->special == NULL) d->special = default_special;
- if (d->start_power_step == NULL)
- d->start_power_step = default_start_power_step;
-}
-
-int ide_register_subdriver(ide_drive_t *drive, ide_driver_t *driver)
-{
- unsigned long flags;
-
- BUG_ON(!drive->driver);
-
- spin_lock_irqsave(&ide_lock, flags);
- if (!drive->present || drive->driver != &idedefault_driver ||
- drive->usage || drive->dead) {
- spin_unlock_irqrestore(&ide_lock, flags);
- return 1;
- }
- drive->driver = driver;
- spin_unlock_irqrestore(&ide_lock, flags);
- spin_lock(&drives_lock);
- list_add_tail(&drive->list, &driver->drives);
- spin_unlock(&drives_lock);
-// printk(KERN_INFO "%s: attached %s driver.\n", drive->name, driver->name);
- if ((drive->autotune == IDE_TUNE_DEFAULT) ||
- (drive->autotune == IDE_TUNE_AUTO)) {
- /* DMA timings and setup moved to ide-probe.c */
- drive->dsc_overlap = (drive->next != drive && driver->supports_dsc_overlap);
- drive->nice1 = 1;
- }
#ifdef CONFIG_PROC_FS
- if (drive->driver != &idedefault_driver) {
- ide_add_proc_entries(drive->proc, generic_subdriver_entries, drive);
- ide_add_proc_entries(drive->proc, driver->proc, drive);
- }
+ ide_add_proc_entries(drive->proc, driver->proc, drive);
#endif
- return 0;
}
EXPORT_SYMBOL(ide_register_subdriver);
/**
* ide_unregister_subdriver - disconnect drive from driver
* @drive: drive to unplug
+ * @driver: driver
*
* Disconnect a drive from the driver it was attached to and then
* clean up the various proc files and other objects attached to it.
*
- * Takes ide_setting_sem, ide_lock and drives_lock.
+ * Takes ide_setting_sem and ide_lock.
* Caller must hold none of the locks.
- *
- * No locking versus subdriver unload because we are moving to the
- * default driver anyway. Wants double checking.
*/
-int ide_unregister_subdriver (ide_drive_t *drive)
+void ide_unregister_subdriver(ide_drive_t *drive, ide_driver_t *driver)
{
unsigned long flags;
down(&ide_setting_sem);
spin_lock_irqsave(&ide_lock, flags);
- if (drive->usage || drive->driver == &idedefault_driver || DRIVER(drive)->busy) {
- spin_unlock_irqrestore(&ide_lock, flags);
- up(&ide_setting_sem);
- return 1;
- }
#ifdef CONFIG_PROC_FS
- ide_remove_proc_entries(drive->proc, DRIVER(drive)->proc);
- ide_remove_proc_entries(drive->proc, generic_subdriver_entries);
+ ide_remove_proc_entries(drive->proc, driver->proc);
#endif
auto_remove_settings(drive);
- drive->driver = &idedefault_driver;
spin_unlock_irqrestore(&ide_lock, flags);
up(&ide_setting_sem);
- spin_lock(&drives_lock);
- list_del_init(&drive->list);
- spin_unlock(&drives_lock);
- /* drive will be added to &idedefault_driver->drives in ata_attach() */
- return 0;
}
EXPORT_SYMBOL(ide_unregister_subdriver);
-static int ide_drive_remove(struct device * dev)
-{
- ide_drive_t * drive = container_of(dev,ide_drive_t,gendev);
- DRIVER(drive)->cleanup(drive);
- return 0;
-}
-
-/**
- * ide_register_driver - register IDE device driver
- * @driver: the IDE device driver
- *
- * Register a new device driver and then scan the devices
- * on the IDE bus in case any should be attached to the
- * driver we have just registered. If so attach them.
- *
- * Takes drivers_lock and drives_lock.
- */
-
-int ide_register_driver(ide_driver_t *driver)
-{
- struct list_head list;
- struct list_head *list_loop;
- struct list_head *tmp_storage;
-
- setup_driver_defaults(driver);
-
- spin_lock(&drivers_lock);
- list_add(&driver->drivers, &drivers);
- spin_unlock(&drivers_lock);
-
- INIT_LIST_HEAD(&list);
- spin_lock(&drives_lock);
- list_splice_init(&idedefault_driver.drives, &list);
- spin_unlock(&drives_lock);
-
- list_for_each_safe(list_loop, tmp_storage, &list) {
- ide_drive_t *drive = container_of(list_loop, ide_drive_t, list);
- list_del_init(&drive->list);
- if (drive->present)
- ata_attach(drive);
- }
- driver->gen_driver.name = (char *) driver->name;
- driver->gen_driver.bus = &ide_bus_type;
- driver->gen_driver.remove = ide_drive_remove;
- return driver_register(&driver->gen_driver);
-}
-
-EXPORT_SYMBOL(ide_register_driver);
-
-/**
- * ide_unregister_driver - unregister IDE device driver
- * @driver: the IDE device driver
- *
- * Called when a driver module is being unloaded. We reattach any
- * devices to whatever driver claims them next (typically the default
- * driver).
- *
- * Takes drivers_lock and called functions will take ide_setting_sem.
- */
-
-void ide_unregister_driver(ide_driver_t *driver)
-{
- ide_drive_t *drive;
-
- spin_lock(&drivers_lock);
- list_del(&driver->drivers);
- spin_unlock(&drivers_lock);
-
- driver_unregister(&driver->gen_driver);
-
- while(!list_empty(&driver->drives)) {
- drive = list_entry(driver->drives.next, ide_drive_t, list);
- if (driver->cleanup(drive)) {
- printk(KERN_ERR "%s: cleanup_module() called while still busy\n", drive->name);
- BUG();
- }
- ata_attach(drive);
- }
-}
-
-EXPORT_SYMBOL(ide_unregister_driver);
-
-struct block_device_operations ide_fops[] = {{
- .owner = THIS_MODULE,
- .open = ide_open,
-}};
-
-EXPORT_SYMBOL(ide_fops);
-
/*
* Probe module
*/
EXPORT_SYMBOL(ide_lock);
+static int ide_bus_match(struct device *dev, struct device_driver *drv)
+{
+ return 1;
+}
+
struct bus_type ide_bus_type = {
.name = "ide",
+ .match = ide_bus_match,
.suspend = generic_ide_suspend,
.resume = generic_ide_resume,
};
+EXPORT_SYMBOL_GPL(ide_bus_type);
+
/*
* This is gets invoked once during initialization, to set *everything* up
*/
git://git.onelab.eu / linux-2.6.git / blobdiff