diff options
Diffstat (limited to 'drivers/ide/ide.c')
-rw-r--r-- | drivers/ide/ide.c | 470 |
1 files changed, 90 insertions, 380 deletions
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index ae5bf2be6f52..f2b547ff7722 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -168,12 +168,11 @@ static const u8 ide_hwif_to_major[] = { IDE0_MAJOR, IDE1_MAJOR, static int idebus_parameter; /* holds the "idebus=" parameter */ static int system_bus_speed; /* holds what we think is VESA/PCI bus speed */ -static int initializing; /* set while initializing built-in drivers */ DECLARE_MUTEX(ide_cfg_sem); __cacheline_aligned_in_smp DEFINE_SPINLOCK(ide_lock); -#ifdef CONFIG_BLK_DEV_IDEPCI +#ifdef CONFIG_IDEPCI_PCIBUS_ORDER static int ide_scan_direction; /* THIS was formerly 2.2.x pci=reverse */ #endif @@ -216,9 +215,6 @@ static void init_hwif_data(ide_hwif_t *hwif, unsigned int index) hwif->bus_state = BUSSTATE_ON; hwif->atapi_dma = 0; /* disable all atapi dma */ - hwif->ultra_mask = 0x80; /* disable all ultra */ - hwif->mwdma_mask = 0x80; /* disable all mwdma */ - hwif->swdma_mask = 0x80; /* disable all swdma */ init_completion(&hwif->gendev_rel_comp); @@ -305,9 +301,7 @@ static void __init init_ide_data (void) #endif } #ifdef CONFIG_IDE_ARM - initializing = 1; ide_arm_init(); - initializing = 0; #endif } @@ -353,10 +347,6 @@ static int ide_system_bus_speed(void) return system_bus_speed; } -#ifdef CONFIG_PROC_FS -struct proc_dir_entry *proc_ide_root; -#endif - static struct resource* hwif_request_region(ide_hwif_t *hwif, unsigned long addr, int num) { @@ -480,6 +470,7 @@ static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif) hwif->tuneproc = tmp_hwif->tuneproc; hwif->speedproc = tmp_hwif->speedproc; + hwif->udma_filter = tmp_hwif->udma_filter; hwif->selectproc = tmp_hwif->selectproc; hwif->reset_poll = tmp_hwif->reset_poll; hwif->pre_reset = tmp_hwif->pre_reset; @@ -599,7 +590,7 @@ void ide_unregister(unsigned int index) spin_unlock_irq(&ide_lock); - destroy_proc_ide_interface(hwif); + ide_proc_unregister_port(hwif); hwgroup = hwif->hwgroup; /* @@ -751,6 +742,7 @@ void ide_setup_ports ( hw_regs_t *hw, /** * ide_register_hw_with_fixup - register IDE interface * @hw: hardware registers + * @initializing: set while initializing built-in drivers * @hwifp: pointer to returned hwif * @fixup: fixup function * @@ -760,7 +752,9 @@ void ide_setup_ports ( hw_regs_t *hw, * Returns -1 on error. */ -int ide_register_hw_with_fixup(hw_regs_t *hw, ide_hwif_t **hwifp, void(*fixup)(ide_hwif_t *hwif)) +int ide_register_hw_with_fixup(hw_regs_t *hw, int initializing, + ide_hwif_t **hwifp, + void(*fixup)(ide_hwif_t *hwif)) { int index, retry = 1; ide_hwif_t *hwif; @@ -801,7 +795,7 @@ found: if (!initializing) { probe_hwif_init_with_fixup(hwif, fixup); - create_proc_ide_interfaces(); + ide_proc_register_port(hwif); } if (hwifp) @@ -812,9 +806,9 @@ found: EXPORT_SYMBOL(ide_register_hw_with_fixup); -int ide_register_hw(hw_regs_t *hw, ide_hwif_t **hwifp) +int ide_register_hw(hw_regs_t *hw, int initializing, ide_hwif_t **hwifp) { - return ide_register_hw_with_fixup(hw, hwifp, NULL); + return ide_register_hw_with_fixup(hw, initializing, hwifp, NULL); } EXPORT_SYMBOL(ide_register_hw); @@ -825,205 +819,7 @@ EXPORT_SYMBOL(ide_register_hw); DECLARE_MUTEX(ide_setting_sem); -/** - * __ide_add_setting - add an ide setting option - * @drive: drive to use - * @name: setting name - * @rw: true if the function is read write - * @read_ioctl: function to call on read - * @write_ioctl: function to call on write - * @data_type: type of data - * @min: range minimum - * @max: range maximum - * @mul_factor: multiplication scale - * @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 - * parallel changes. This function must not be called from IRQ - * context. Returns 0 on success or -1 on failure. - * - * BUGS: This code is seriously over-engineered. There is also - * magic about how the driver specific features are setup. If - * a driver is attached we assume the driver settings are auto - * remove. - */ - -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; - - down(&ide_setting_sem); - while ((*p) && strcmp((*p)->name, name) < 0) - p = &((*p)->next); - if ((setting = kzalloc(sizeof(*setting), GFP_KERNEL)) == NULL) - goto abort; - if ((setting->name = kmalloc(strlen(name) + 1, GFP_KERNEL)) == NULL) - goto abort; - strcpy(setting->name, name); - setting->rw = rw; - setting->read_ioctl = read_ioctl; - setting->write_ioctl = write_ioctl; - setting->data_type = data_type; - setting->min = min; - setting->max = max; - setting->mul_factor = mul_factor; - setting->div_factor = div_factor; - setting->data = data; - setting->set = set; - - setting->next = *p; - if (auto_remove) - setting->auto_remove = 1; - *p = setting; - up(&ide_setting_sem); - return 0; -abort: - up(&ide_setting_sem); - kfree(setting); - 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); - -/** - * __ide_remove_setting - remove an ide setting option - * @drive: drive to use - * @name: setting name - * - * Removes the setting named from the device if it is present. - * The caller must hold the setting semaphore. - */ - -static void __ide_remove_setting (ide_drive_t *drive, char *name) -{ - ide_settings_t **p, *setting; - - p = (ide_settings_t **) &drive->settings; - - while ((*p) && strcmp((*p)->name, name)) - p = &((*p)->next); - if ((setting = (*p)) == NULL) - return; - - (*p) = setting->next; - - kfree(setting->name); - kfree(setting); -} - -/** - * ide_find_setting_by_ioctl - find a drive specific ioctl - * @drive: drive to scan - * @cmd: ioctl command to handle - * - * Scan's the device setting table for a matching entry and returns - * this or NULL if no entry is found. The caller must hold the - * setting semaphore - */ - -static ide_settings_t *ide_find_setting_by_ioctl (ide_drive_t *drive, int cmd) -{ - ide_settings_t *setting = drive->settings; - - while (setting) { - if (setting->read_ioctl == cmd || setting->write_ioctl == cmd) - break; - setting = setting->next; - } - - return setting; -} - -/** - * ide_find_setting_by_name - find a drive specific setting - * @drive: drive to scan - * @name: setting name - * - * Scan's the device setting table for a matching entry and returns - * this or NULL if no entry is found. The caller must hold the - * setting semaphore - */ - -ide_settings_t *ide_find_setting_by_name (ide_drive_t *drive, char *name) -{ - ide_settings_t *setting = drive->settings; - - while (setting) { - if (strcmp(setting->name, name) == 0) - break; - setting = setting->next; - } - return setting; -} - -/** - * auto_remove_settings - remove driver specific settings - * @drive: drive - * - * Automatically remove all the driver specific settings for this - * drive. This function may not be called from IRQ context. The - * caller must hold ide_setting_sem. - */ - -static void auto_remove_settings (ide_drive_t *drive) -{ - ide_settings_t *setting; -repeat: - setting = drive->settings; - while (setting) { - if (setting->auto_remove) { - __ide_remove_setting(drive, setting->name); - goto repeat; - } - setting = setting->next; - } -} - -/** - * ide_read_setting - read an IDE setting - * @drive: drive to read from - * @setting: drive setting - * - * Read a drive setting and return the value. The caller - * must hold the ide_setting_sem when making this call. - * - * BUGS: the data return and error are the same return value - * so an error -EINVAL and true return of the same value cannot - * be told apart - */ - -int ide_read_setting (ide_drive_t *drive, ide_settings_t *setting) -{ - int val = -EINVAL; - unsigned long flags; - - if ((setting->rw & SETTING_READ)) { - spin_lock_irqsave(&ide_lock, flags); - switch(setting->data_type) { - case TYPE_BYTE: - val = *((u8 *) setting->data); - break; - case TYPE_SHORT: - val = *((u16 *) setting->data); - break; - case TYPE_INT: - case TYPE_INTA: - val = *((u32 *) setting->data); - break; - } - spin_unlock_irqrestore(&ide_lock, flags); - } - return val; -} +EXPORT_SYMBOL_GPL(ide_setting_sem); /** * ide_spin_wait_hwgroup - wait for group @@ -1058,61 +854,14 @@ int ide_spin_wait_hwgroup (ide_drive_t *drive) EXPORT_SYMBOL(ide_spin_wait_hwgroup); -/** - * ide_write_setting - read an IDE setting - * @drive: drive to read from - * @setting: drive setting - * @val: value - * - * Write a drive setting if it is possible. The caller - * must hold the ide_setting_sem when making this call. - * - * BUGS: the data return and error are the same return value - * so an error -EINVAL and true return of the same value cannot - * be told apart - * - * FIXME: This should be changed to enqueue a special request - * to the driver to change settings, and then wait on a sema for completion. - * The current scheme of polling is kludgy, though safe enough. - */ - -int ide_write_setting (ide_drive_t *drive, ide_settings_t *setting, int val) +int set_io_32bit(ide_drive_t *drive, int arg) { - int i; - u32 *p; - - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - if (!(setting->rw & SETTING_WRITE)) + if (drive->no_io_32bit) return -EPERM; - if (val < setting->min || val > setting->max) + + if (arg < 0 || arg > 1 + (SUPPORT_VLB_SYNC << 1)) return -EINVAL; - if (setting->set) - return setting->set(drive, val); - if (ide_spin_wait_hwgroup(drive)) - return -EBUSY; - switch (setting->data_type) { - case TYPE_BYTE: - *((u8 *) setting->data) = val; - break; - case TYPE_SHORT: - *((u16 *) setting->data) = val; - break; - case TYPE_INT: - *((u32 *) setting->data) = val; - break; - case TYPE_INTA: - p = (u32 *) setting->data; - for (i = 0; i < 1 << PARTN_BITS; i++, p++) - *p = val; - break; - } - spin_unlock_irq(&ide_lock); - return 0; -} -static int set_io_32bit(ide_drive_t *drive, int arg) -{ drive->io_32bit = arg; #ifdef CONFIG_BLK_DEV_DTC2278 if (HWIF(drive)->chipset == ide_dtc2278) @@ -1121,12 +870,28 @@ static int set_io_32bit(ide_drive_t *drive, int arg) return 0; } -static int set_using_dma (ide_drive_t *drive, int arg) +static int set_ksettings(ide_drive_t *drive, int arg) +{ + if (arg < 0 || arg > 1) + return -EINVAL; + + if (ide_spin_wait_hwgroup(drive)) + return -EBUSY; + drive->keep_settings = arg; + spin_unlock_irq(&ide_lock); + + return 0; +} + +int set_using_dma(ide_drive_t *drive, int arg) { #ifdef CONFIG_BLK_DEV_IDEDMA ide_hwif_t *hwif = drive->hwif; int err = -EPERM; + if (arg < 0 || arg > 1) + return -EINVAL; + if (!drive->id || !(drive->id->capability & 1)) goto out; @@ -1159,14 +924,20 @@ static int set_using_dma (ide_drive_t *drive, int arg) out: return err; #else + if (arg < 0 || arg > 1) + return -EINVAL; + return -EPERM; #endif } -static int set_pio_mode (ide_drive_t *drive, int arg) +int set_pio_mode(ide_drive_t *drive, int arg) { struct request rq; + if (arg < 0 || arg > 255) + return -EINVAL; + if (!HWIF(drive)->tuneproc) return -ENOSYS; if (drive->special.b.set_tune) @@ -1178,42 +949,20 @@ static int set_pio_mode (ide_drive_t *drive, int arg) return 0; } -static int set_xfer_rate (ide_drive_t *drive, int arg) +static int set_unmaskirq(ide_drive_t *drive, int arg) { - int err = ide_wait_cmd(drive, - WIN_SETFEATURES, (u8) arg, - SETFEATURES_XFER, 0, NULL); + if (drive->no_unmask) + return -EPERM; - if (!err && arg) { - ide_set_xfer_rate(drive, (u8) arg); - ide_driveid_update(drive); - } - return err; -} + if (arg < 0 || arg > 1) + return -EINVAL; -/** - * ide_add_generic_settings - generic ide settings - * @drive: drive being configured - * - * Add the generic parts of the system settings to the /proc files and - * ioctls for this IDE device. The caller must not be holding the - * ide_setting_sem. - */ + if (ide_spin_wait_hwgroup(drive)) + return -EBUSY; + drive->unmask = arg; + spin_unlock_irq(&ide_lock); -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 - */ - __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); + return 0; } /** @@ -1285,27 +1034,23 @@ static int generic_ide_resume(struct device *dev) int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device *bdev, unsigned int cmd, unsigned long arg) { - ide_settings_t *setting; + unsigned long flags; ide_driver_t *drv; - int err = 0; void __user *p = (void __user *)arg; + int err = 0, (*setfunc)(ide_drive_t *, int); + u8 *val; - down(&ide_setting_sem); - if ((setting = ide_find_setting_by_ioctl(drive, cmd)) != NULL) { - if (cmd == setting->read_ioctl) { - err = ide_read_setting(drive, setting); - up(&ide_setting_sem); - return err >= 0 ? put_user(err, (long __user *)arg) : err; - } else { - if (bdev != bdev->bd_contains) - err = -EINVAL; - else - err = ide_write_setting(drive, setting, arg); - up(&ide_setting_sem); - return err; - } + switch (cmd) { + case HDIO_GET_32BIT: val = &drive->io_32bit; goto read_val; + case HDIO_GET_KEEPSETTINGS: val = &drive->keep_settings; goto read_val; + case HDIO_GET_UNMASKINTR: val = &drive->unmask; goto read_val; + case HDIO_GET_DMA: val = &drive->using_dma; goto read_val; + case HDIO_SET_32BIT: setfunc = set_io_32bit; goto set_val; + case HDIO_SET_KEEPSETTINGS: setfunc = set_ksettings; goto set_val; + case HDIO_SET_PIO_MODE: setfunc = set_pio_mode; goto set_val; + case HDIO_SET_UNMASKINTR: setfunc = set_unmaskirq; goto set_val; + case HDIO_SET_DMA: setfunc = set_using_dma; goto set_val; } - up(&ide_setting_sem); switch (cmd) { case HDIO_OBSOLETE_IDENTITY: @@ -1359,7 +1104,7 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device ide_init_hwif_ports(&hw, (unsigned long) args[0], (unsigned long) args[1], NULL); hw.irq = args[2]; - if (ide_register_hw(&hw, NULL) == -1) + if (ide_register_hw(&hw, 0, NULL) == -1) return -EIO; return 0; } @@ -1434,6 +1179,28 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device default: return -EINVAL; } + +read_val: + down(&ide_setting_sem); + spin_lock_irqsave(&ide_lock, flags); + err = *val; + spin_unlock_irqrestore(&ide_lock, flags); + up(&ide_setting_sem); + return err >= 0 ? put_user(err, (long __user *)arg) : err; + +set_val: + if (bdev != bdev->bd_contains) + err = -EINVAL; + else { + if (!capable(CAP_SYS_ADMIN)) + err = -EACCES; + else { + down(&ide_setting_sem); + err = setfunc(drive, arg); + up(&ide_setting_sem); + } + } + return err; } EXPORT_SYMBOL(generic_ide_ioctl); @@ -1566,13 +1333,13 @@ static int __init ide_setup(char *s) return 1; } -#ifdef CONFIG_BLK_DEV_IDEPCI +#ifdef CONFIG_IDEPCI_PCIBUS_ORDER if (!strcmp(s, "ide=reverse")) { ide_scan_direction = 1; printk(" : Enabled support for IDE inverse scan order.\n"); return 1; } -#endif /* CONFIG_BLK_DEV_IDEPCI */ +#endif #ifdef CONFIG_BLK_DEV_IDEACPI if (!strcmp(s, "ide=noacpi")) { @@ -1832,9 +1599,9 @@ extern void __init h8300_ide_init(void); */ static void __init probe_for_hwifs (void) { -#ifdef CONFIG_BLK_DEV_IDEPCI +#ifdef CONFIG_IDEPCI_PCIBUS_ORDER ide_scan_pcibus(ide_scan_direction); -#endif /* CONFIG_BLK_DEV_IDEPCI */ +#endif #ifdef CONFIG_ETRAX_IDE { @@ -1892,54 +1659,6 @@ static void __init probe_for_hwifs (void) #endif } -void ide_register_subdriver(ide_drive_t *drive, ide_driver_t *driver) -{ -#ifdef CONFIG_PROC_FS - ide_add_proc_entries(drive->proc, driver->proc, drive); -#endif -} - -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 and ide_lock. - * Caller must hold none of the locks. - */ - -void ide_unregister_subdriver(ide_drive_t *drive, ide_driver_t *driver) -{ - unsigned long flags; - -#ifdef CONFIG_PROC_FS - ide_remove_proc_entries(drive->proc, driver->proc); -#endif - down(&ide_setting_sem); - spin_lock_irqsave(&ide_lock, flags); - /* - * ide_setting_sem protects the settings list - * ide_lock protects the use of settings - * - * so we need to hold both, ide_settings_sem because we want to - * modify the settings list, and ide_lock because we cannot take - * a setting out that is being used. - * - * OTOH both ide_{read,write}_setting are only ever used under - * ide_setting_sem. - */ - auto_remove_settings(drive); - spin_unlock_irqrestore(&ide_lock, flags); - up(&ide_setting_sem); -} - -EXPORT_SYMBOL(ide_unregister_subdriver); - /* * Probe module */ @@ -2071,9 +1790,7 @@ static int __init ide_init(void) init_ide_data(); -#ifdef CONFIG_PROC_FS - proc_ide_root = proc_mkdir("ide", NULL); -#endif + proc_ide_create(); #ifdef CONFIG_BLK_DEV_ALI14XX if (probe_ali14xx) @@ -2096,14 +1813,9 @@ static int __init ide_init(void) (void)qd65xx_init(); #endif - initializing = 1; /* Probe for special PCI and other "known" interface chipsets. */ probe_for_hwifs(); - initializing = 0; -#ifdef CONFIG_PROC_FS - proc_ide_create(); -#endif return 0; } @@ -2143,9 +1855,7 @@ void __exit cleanup_module (void) pnpide_exit(); #endif -#ifdef CONFIG_PROC_FS proc_ide_destroy(); -#endif bus_unregister(&ide_bus_type); } |