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ide: move IDE settings handling to ide-proc.c 

* move
	__ide_add_setting()
	ide_add_setting()
	__ide_remove_setting()
	auto_remove_settings()
	ide_find_setting_by_name()
	ide_read_setting()
	ide_write_setting()
	set_xfer_rate()
	ide_add_generic_settings()
	ide_register_subdriver()
	ide_unregister_subdriver()

  from ide.c to ide-proc.c

* set_{io_32bit,pio_mode,using_dma}() cannot be marked static now, fix it

* rename ide_[un]register_subdriver() to ide_proc_[un]register_driver(),
  update device drivers to use new names

* add CONFIG_IDE_PROC_FS=n versions of ide_proc_[un]register_driver()
  and ide_add_generic_settings()

* make ide_find_setting_by_name(), ide_{read,write}_setting()
  and ide_{add,remove}_proc_entries() static

* cover IDE settings code in device drivers with CONFIG_IDE_PROC_FS #ifdef,
  also while at it cover with CONFIG_IDE_PROC_FS #ifdef ide_driver_t.proc

* remove bogus comment from ide.h

* cover with CONFIG_IDE_PROC_FS #ifdef .proc and .settings in ide_drive_t

Besides saner code this patch results in the IDE core smaller by ~2 kB
(on x86-32) and IDE disk driver by ~1 kB (ditto) when CONFIG_IDE_PROC_FS=n.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2007-05-10 00:01:10 +02:00
parent 1497943ee6
commit 7662d046df
8 changed files with 378 additions and 363 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/ide/ide-cd.c
View File

@ -3059,10 +3059,14 @@ int ide_cdrom_probe_capabilities (ide_drive_t *drive)
return nslots;
}
#ifdef CONFIG_IDE_PROC_FS
static void ide_cdrom_add_settings(ide_drive_t *drive)
{
ide_add_setting(drive, "dsc_overlap", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->dsc_overlap, NULL);
}
#else
static inline void ide_cdrom_add_settings(ide_drive_t *drive) { ; }
#endif
/*
* standard prep_rq_fn that builds 10 byte cmds
@ -3291,7 +3295,7 @@ static void ide_cd_remove(ide_drive_t *drive)
{
struct cdrom_info *info = drive->driver_data;
ide_unregister_subdriver(drive, info->driver);
ide_proc_unregister_driver(drive, info->driver);
del_gendisk(info->disk);
@ -3336,8 +3340,6 @@ static ide_proc_entry_t idecd_proc[] = {
{ "capacity", S_IFREG|S_IRUGO, proc_idecd_read_capacity, NULL },
{ NULL, 0, NULL, NULL }
};
#else
# define idecd_proc NULL
#endif
static ide_driver_t ide_cdrom_driver = {
@ -3355,7 +3357,9 @@ static ide_driver_t ide_cdrom_driver = {
.end_request = ide_end_request,
.error = __ide_error,
.abort = __ide_abort,
#ifdef CONFIG_IDE_PROC_FS
.proc = idecd_proc,
#endif
};
static int idecd_open(struct inode * inode, struct file * file)
@ -3517,7 +3521,7 @@ static int ide_cd_probe(ide_drive_t *drive)
ide_init_disk(g, drive);
ide_register_subdriver(drive, &ide_cdrom_driver);
ide_proc_register_driver(drive, &ide_cdrom_driver);
kref_init(&info->kref);
@ -3534,7 +3538,7 @@ static int ide_cd_probe(ide_drive_t *drive)
g->flags = GENHD_FL_CD | GENHD_FL_REMOVABLE;
if (ide_cdrom_setup(drive)) {
struct cdrom_device_info *devinfo = &info->devinfo;
ide_unregister_subdriver(drive, &ide_cdrom_driver);
ide_proc_unregister_driver(drive, &ide_cdrom_driver);
kfree(info->buffer);
kfree(info->toc);
kfree(info->changer_info);

16
drivers/ide/ide-disk.c
View File

@ -560,7 +560,6 @@ static sector_t idedisk_capacity (ide_drive_t *drive)
}
#ifdef CONFIG_IDE_PROC_FS
static int smart_enable(ide_drive_t *drive)
{
ide_task_t args;
@ -678,11 +677,6 @@ static ide_proc_entry_t idedisk_proc[] = {
{ "smart_thresholds", S_IFREG|S_IRUSR, proc_idedisk_read_smart_thresholds, NULL },
{ NULL, 0, NULL, NULL }
};
#else
#define idedisk_proc NULL
#endif /* CONFIG_IDE_PROC_FS */
static void idedisk_prepare_flush(request_queue_t *q, struct request *rq)
@ -881,6 +875,7 @@ static int set_lba_addressing(ide_drive_t *drive, int arg)
return 0;
}
#ifdef CONFIG_IDE_PROC_FS
static void idedisk_add_settings(ide_drive_t *drive)
{
struct hd_driveid *id = drive->id;
@ -898,6 +893,9 @@ static void idedisk_add_settings(ide_drive_t *drive)
ide_add_setting(drive, "failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->failures, NULL);
ide_add_setting(drive, "max_failures", SETTING_RW, TYPE_INT, 0, 65535, 1, 1, &drive->max_failures, NULL);
}
#else
static inline void idedisk_add_settings(ide_drive_t *drive) { ; }
#endif
static void idedisk_setup (ide_drive_t *drive)
{
@ -1016,7 +1014,7 @@ static void ide_disk_remove(ide_drive_t *drive)
struct ide_disk_obj *idkp = drive->driver_data;
struct gendisk *g = idkp->disk;
ide_unregister_subdriver(drive, idkp->driver);
ide_proc_unregister_driver(drive, idkp->driver);
del_gendisk(g);
@ -1081,7 +1079,9 @@ static ide_driver_t idedisk_driver = {
.end_request = ide_end_request,
.error = __ide_error,
.abort = __ide_abort,
#ifdef CONFIG_IDE_PROC_FS
.proc = idedisk_proc,
#endif
};
static int idedisk_open(struct inode *inode, struct file *filp)
@ -1257,7 +1257,7 @@ static int ide_disk_probe(ide_drive_t *drive)
ide_init_disk(g, drive);
ide_register_subdriver(drive, &idedisk_driver);
ide_proc_register_driver(drive, &idedisk_driver);
kref_init(&idkp->kref);

16
drivers/ide/ide-floppy.c
View File

@ -1811,6 +1811,7 @@ static int idefloppy_identify_device (ide_drive_t *drive,struct hd_driveid *id)
return 0;
}
#ifdef CONFIG_IDE_PROC_FS
static void idefloppy_add_settings(ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
@ -1823,6 +1824,9 @@ static void idefloppy_add_settings(ide_drive_t *drive)
ide_add_setting(drive, "bios_sect", SETTING_RW, TYPE_BYTE, 0, 63, 1, 1, &drive->bios_sect, NULL);
ide_add_setting(drive, "ticks", SETTING_RW, TYPE_BYTE, 0, 255, 1, 1, &floppy->ticks, NULL);
}
#else
static inline void idefloppy_add_settings(ide_drive_t *drive) { ; }
#endif
/*
* Driver initialization.
@ -1873,7 +1877,7 @@ static void ide_floppy_remove(ide_drive_t *drive)
idefloppy_floppy_t *floppy = drive->driver_data;
struct gendisk *g = floppy->disk;
ide_unregister_subdriver(drive, floppy->driver);
ide_proc_unregister_driver(drive, floppy->driver);
del_gendisk(g);
@ -1893,7 +1897,6 @@ static void ide_floppy_release(struct kref *kref)
}
#ifdef CONFIG_IDE_PROC_FS
static int proc_idefloppy_read_capacity
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
@ -1909,11 +1912,6 @@ static ide_proc_entry_t idefloppy_proc[] = {
{ "geometry", S_IFREG|S_IRUGO, proc_ide_read_geometry, NULL },
{ NULL, 0, NULL, NULL }
};
#else
#define idefloppy_proc NULL
#endif /* CONFIG_IDE_PROC_FS */
static int ide_floppy_probe(ide_drive_t *);
@ -1933,7 +1931,9 @@ static ide_driver_t idefloppy_driver = {
.end_request = idefloppy_do_end_request,
.error = __ide_error,
.abort = __ide_abort,
#ifdef CONFIG_IDE_PROC_FS
.proc = idefloppy_proc,
#endif
};
static int idefloppy_open(struct inode *inode, struct file *filp)
@ -2159,7 +2159,7 @@ static int ide_floppy_probe(ide_drive_t *drive)
ide_init_disk(g, drive);
ide_register_subdriver(drive, &idefloppy_driver);
ide_proc_register_driver(drive, &idefloppy_driver);
kref_init(&floppy->kref);

310
drivers/ide/ide-proc.c
View File

@ -3,6 +3,8 @@
*
* Copyright (C) 1997-1998 Mark Lord
* Copyright (C) 2003 Red Hat <alan@redhat.com>
*
* Some code was moved here from ide.c, see it for original copyrights.
*/
/*
@ -121,6 +123,265 @@ static int proc_ide_read_identify
PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}
/**
* __ide_add_setting - add an ide setting option
* @drive: drive to use
* @name: setting name
* @rw: true if the function is read 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 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->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 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, 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);
}
/**
* 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_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
*/
static 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;
}
/**
* 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
*/
static 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:
val = *((u32 *) setting->data);
break;
}
spin_unlock_irqrestore(&ide_lock, flags);
}
return val;
}
/**
* 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.
*/
static int ide_write_setting(ide_drive_t *drive, ide_settings_t *setting, int val)
{
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
if (setting->set)
return setting->set(drive, val);
if (!(setting->rw & SETTING_WRITE))
return -EPERM;
if (val < setting->min || val > setting->max)
return -EINVAL;
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;
}
spin_unlock_irq(&ide_lock);
return 0;
}
static int set_xfer_rate (ide_drive_t *drive, int arg)
{
int err;
if (arg < 0 || arg > 70)
return -EINVAL;
err = ide_wait_cmd(drive,
WIN_SETFEATURES, (u8) arg,
SETFEATURES_XFER, 0, NULL);
if (!err && arg) {
ide_set_xfer_rate(drive, (u8) arg);
ide_driveid_update(drive);
}
return err;
}
/**
* ide_add_generic_settings - generic ide settings
* @drive: drive being configured
*
* Add the generic parts of the system settings to the /proc files.
* The caller must not be holding the ide_setting_sem.
*/
void ide_add_generic_settings (ide_drive_t *drive)
{
/*
* drive setting name read/write access 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, TYPE_BYTE, 0, 1 + (SUPPORT_VLB_SYNC << 1), 1, 1, &drive->io_32bit, set_io_32bit, 0);
__ide_add_setting(drive, "keepsettings", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL, 0);
__ide_add_setting(drive, "nice1", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL, 0);
__ide_add_setting(drive, "pio_mode", SETTING_WRITE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode, 0);
__ide_add_setting(drive, "unmaskirq", drive->no_unmask ? SETTING_READ : SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->unmask, NULL, 0);
__ide_add_setting(drive, "using_dma", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->using_dma, set_using_dma, 0);
__ide_add_setting(drive, "init_speed", SETTING_RW, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL, 0);
__ide_add_setting(drive, "current_speed", SETTING_RW, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate, 0);
__ide_add_setting(drive, "number", SETTING_RW, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL, 0);
}
static void proc_ide_settings_warn(void)
{
static int warned = 0;
@ -399,7 +660,7 @@ static ide_proc_entry_t generic_drive_entries[] = {
{ NULL, 0, NULL, NULL }
};
void ide_add_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p, void *data)
static void ide_add_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p, void *data)
{
struct proc_dir_entry *ent;
@ -415,7 +676,7 @@ void ide_add_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p, void
}
}
void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p)
static void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p)
{
if (!dir || !p)
return;
@ -425,6 +686,51 @@ void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p)
}
}
void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver)
{
ide_add_proc_entries(drive->proc, driver->proc, drive);
}
EXPORT_SYMBOL(ide_proc_register_driver);
/**
* ide_proc_unregister_driver - remove driver specific data
* @drive: drive
* @driver: driver
*
* Clean up the driver specific /proc files and IDE settings
* for a given drive.
*
* Takes ide_setting_sem and ide_lock.
* Caller must hold none of the locks.
*/
void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver)
{
unsigned long flags;
ide_remove_proc_entries(drive->proc, driver->proc);
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_proc_unregister_driver);
static void create_proc_ide_drives(ide_hwif_t *hwif)
{
int d;

17
drivers/ide/ide-tape.c
View File

@ -4561,6 +4561,8 @@ static void idetape_get_blocksize_from_block_descriptor(ide_drive_t *drive)
printk(KERN_INFO "ide-tape: Adjusted block size - %d\n", tape->tape_block_size);
#endif /* IDETAPE_DEBUG_INFO */
}
#ifdef CONFIG_IDE_PROC_FS
static void idetape_add_settings (ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
@ -4583,6 +4585,9 @@ static void idetape_add_settings (ide_drive_t *drive)
ide_add_setting(drive, "avg_speed", SETTING_READ, TYPE_INT, 0, 0xffff, 1, 1, &tape->avg_speed, NULL);
ide_add_setting(drive, "debug_level", SETTING_RW, TYPE_INT, 0, 0xffff, 1, 1, &tape->debug_level, NULL);
}
#else
static inline void idetape_add_settings(ide_drive_t *drive) { ; }
#endif
/*
* ide_setup is called to:
@ -4703,7 +4708,7 @@ static void ide_tape_remove(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
ide_unregister_subdriver(drive, tape->driver);
ide_proc_unregister_driver(drive, tape->driver);
ide_unregister_region(tape->disk);
@ -4731,7 +4736,6 @@ static void ide_tape_release(struct kref *kref)
}
#ifdef CONFIG_IDE_PROC_FS
static int proc_idetape_read_name
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
@ -4749,11 +4753,6 @@ static ide_proc_entry_t idetape_proc[] = {
{ "name", S_IFREG|S_IRUGO, proc_idetape_read_name, NULL },
{ NULL, 0, NULL, NULL }
};
#else
#define idetape_proc NULL
#endif
static int ide_tape_probe(ide_drive_t *);
@ -4773,7 +4772,9 @@ static ide_driver_t idetape_driver = {
.end_request = idetape_end_request,
.error = __ide_error,
.abort = __ide_abort,
#ifdef CONFIG_IDE_PROC_FS
.proc = idetape_proc,
#endif
};
/*
@ -4864,7 +4865,7 @@ static int ide_tape_probe(ide_drive_t *drive)
ide_init_disk(g, drive);
ide_register_subdriver(drive, &idetape_driver);
ide_proc_register_driver(drive, &idetape_driver);
kref_init(&tape->kref);

313
drivers/ide/ide.c
View File

@ -825,178 +825,6 @@ DECLARE_MUTEX(ide_setting_sem);
EXPORT_SYMBOL_GPL(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
* @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 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->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 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, 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_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:
val = *((u32 *) setting->data);
break;
}
spin_unlock_irqrestore(&ide_lock, flags);
}
return val;
}
/**
* ide_spin_wait_hwgroup - wait for group
* @drive: drive in the group
@ -1030,52 +858,7 @@ 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)
{
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
if (setting->set)
return setting->set(drive, val);
if (!(setting->rw & SETTING_WRITE))
return -EPERM;
if (val < setting->min || val > setting->max)
return -EINVAL;
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;
}
spin_unlock_irq(&ide_lock);
return 0;
}
static int set_io_32bit(ide_drive_t *drive, int arg)
int set_io_32bit(ide_drive_t *drive, int arg)
{
if (drive->no_io_32bit)
return -EPERM;
@ -1104,7 +887,7 @@ static int set_ksettings(ide_drive_t *drive, int arg)
return 0;
}
static int set_using_dma (ide_drive_t *drive, int arg)
int set_using_dma(ide_drive_t *drive, int arg)
{
#ifdef CONFIG_BLK_DEV_IDEDMA
ide_hwif_t *hwif = drive->hwif;
@ -1152,7 +935,7 @@ out:
#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;
@ -1186,48 +969,6 @@ static int set_unmaskirq(ide_drive_t *drive, int arg)
return 0;
}
static int set_xfer_rate (ide_drive_t *drive, int arg)
{
int err;
if (arg < 0 || arg > 70)
return -EINVAL;
err = ide_wait_cmd(drive,
WIN_SETFEATURES, (u8) arg,
SETFEATURES_XFER, 0, NULL);
if (!err && arg) {
ide_set_xfer_rate(drive, (u8) arg);
ide_driveid_update(drive);
}
return err;
}
/**
* ide_add_generic_settings - generic ide settings
* @drive: drive being configured
*
* Add the generic parts of the system settings to the /proc files.
* The caller must not be holding the ide_setting_sem.
*/
void ide_add_generic_settings (ide_drive_t *drive)
{
/*
* drive setting name read/write access 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, TYPE_BYTE, 0, 1 + (SUPPORT_VLB_SYNC << 1), 1, 1, &drive->io_32bit, set_io_32bit, 0);
__ide_add_setting(drive, "keepsettings", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL, 0);
__ide_add_setting(drive, "nice1", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL, 0);
__ide_add_setting(drive, "pio_mode", SETTING_WRITE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode, 0);
__ide_add_setting(drive, "unmaskirq", drive->no_unmask ? SETTING_READ : SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->unmask, NULL, 0);
__ide_add_setting(drive, "using_dma", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->using_dma, set_using_dma, 0);
__ide_add_setting(drive, "init_speed", SETTING_RW, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL, 0);
__ide_add_setting(drive, "current_speed", SETTING_RW, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate, 0);
__ide_add_setting(drive, "number", SETTING_RW, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL, 0);
}
/**
* system_bus_clock - clock guess
*
@ -1922,54 +1663,6 @@ static void __init probe_for_hwifs (void)
#endif
}
void ide_register_subdriver(ide_drive_t *drive, ide_driver_t *driver)
{
#ifdef CONFIG_IDE_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_IDE_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
*/

16
drivers/scsi/ide-scsi.c
View File

@ -721,6 +721,7 @@ static ide_startstop_t idescsi_do_request (ide_drive_t *drive, struct request *r
return ide_stopped;
}
#ifdef CONFIG_IDE_PROC_FS
static void idescsi_add_settings(ide_drive_t *drive)
{
idescsi_scsi_t *scsi = drive_to_idescsi(drive);
@ -734,6 +735,9 @@ static void idescsi_add_settings(ide_drive_t *drive)
ide_add_setting(drive, "transform", SETTING_RW, TYPE_INT, 0, 3, 1, 1, &scsi->transform, NULL);
ide_add_setting(drive, "log", SETTING_RW, TYPE_INT, 0, 1, 1, 1, &scsi->log, NULL);
}
#else
static inline void idescsi_add_settings(ide_drive_t *drive) { ; }
#endif
/*
* Driver initialization.
@ -756,7 +760,7 @@ static void ide_scsi_remove(ide_drive_t *drive)
struct ide_scsi_obj *scsi = scsihost_to_idescsi(scsihost);
struct gendisk *g = scsi->disk;
ide_unregister_subdriver(drive, scsi->driver);
ide_proc_unregister_driver(drive, scsi->driver);
ide_unregister_region(g);
@ -775,8 +779,6 @@ static ide_proc_entry_t idescsi_proc[] = {
{ "capacity", S_IFREG|S_IRUGO, proc_ide_read_capacity, NULL },
{ NULL, 0, NULL, NULL }
};
#else
# define idescsi_proc NULL
#endif
static ide_driver_t idescsi_driver = {
@ -790,11 +792,13 @@ static ide_driver_t idescsi_driver = {
.version = IDESCSI_VERSION,
.media = ide_scsi,
.supports_dsc_overlap = 0,
.proc = idescsi_proc,
.do_request = idescsi_do_request,
.end_request = idescsi_end_request,
.error = idescsi_atapi_error,
.abort = idescsi_atapi_abort,
#ifdef CONFIG_IDE_PROC_FS
.proc = idescsi_proc,
#endif
};
static int idescsi_ide_open(struct inode *inode, struct file *filp)
@ -1153,7 +1157,7 @@ static int ide_scsi_probe(ide_drive_t *drive)
idescsi->host = host;
idescsi->disk = g;
g->private_data = &idescsi->driver;
ide_register_subdriver(drive, &idescsi_driver);
ide_proc_register_driver(drive, &idescsi_driver);
err = 0;
idescsi_setup(drive, idescsi);
g->fops = &idescsi_ops;
@ -1165,7 +1169,7 @@ static int ide_scsi_probe(ide_drive_t *drive)
}
/* fall through on error */
ide_unregister_region(g);
ide_unregister_subdriver(drive, &idescsi_driver);
ide_proc_unregister_driver(drive, &idescsi_driver);
put_disk(g);
out_host_put:

39
include/linux/ide.h
View File

@ -559,9 +559,10 @@ typedef struct ide_drive_s {
struct ide_drive_s *next; /* circular list of hwgroup drives */
void *driver_data; /* extra driver data */
struct hd_driveid *id; /* drive model identification info */
#ifdef CONFIG_IDE_PROC_FS
struct proc_dir_entry *proc; /* /proc/ide/ directory entry */
struct ide_settings_s *settings;/* /proc/ide/ drive settings */
#endif
struct hwif_s *hwif; /* actually (ide_hwif_t *) */
unsigned long sleep; /* sleep until this time */
@ -858,8 +859,15 @@ typedef struct hwgroup_s {
unsigned char cmd_buf[4];
} ide_hwgroup_t;
/* structure attached to the request for IDE_TASK_CMDS */
typedef struct ide_driver_s ide_driver_t;
extern struct semaphore ide_setting_sem;
int set_io_32bit(ide_drive_t *, int);
int set_pio_mode(ide_drive_t *, int);
int set_using_dma(ide_drive_t *, int);
#ifdef CONFIG_IDE_PROC_FS
/*
* configurable drive settings
*/
@ -887,12 +895,7 @@ typedef struct ide_settings_s {
struct ide_settings_s *next;
} ide_settings_t;
extern struct semaphore ide_setting_sem;
int ide_add_setting(ide_drive_t *, const char *, int, int, int, int, int, int, void *, ide_procset_t *set);
extern ide_settings_t *ide_find_setting_by_name(ide_drive_t *drive, char *name);
extern int ide_read_setting(ide_drive_t *t, ide_settings_t *setting);
extern int ide_write_setting(ide_drive_t *drive, ide_settings_t *setting, int val);
extern void ide_add_generic_settings(ide_drive_t *drive);
/*
* /proc/ide interface
@ -904,15 +907,17 @@ typedef struct {
write_proc_t *write_proc;
} ide_proc_entry_t;
#ifdef CONFIG_IDE_PROC_FS
extern struct proc_dir_entry *proc_ide_root;
void proc_ide_create(void);
void proc_ide_destroy(void);
void create_proc_ide_interfaces(void);
void destroy_proc_ide_interface(ide_hwif_t *);
void ide_add_proc_entries(struct proc_dir_entry *, ide_proc_entry_t *, void *);
void ide_remove_proc_entries(struct proc_dir_entry *, ide_proc_entry_t *);
void ide_proc_register_driver(ide_drive_t *, ide_driver_t *);
void ide_proc_unregister_driver(ide_drive_t *, ide_driver_t *);
void ide_add_generic_settings(ide_drive_t *);
read_proc_t proc_ide_read_capacity;
read_proc_t proc_ide_read_geometry;
@ -940,6 +945,9 @@ static inline void proc_ide_create(void) { ; }
static inline void proc_ide_destroy(void) { ; }
static inline void create_proc_ide_interfaces(void) { ; }
static inline void destroy_proc_ide_interface(ide_hwif_t *hwif) { ; }
static inline void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
static inline void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) { ; }
static inline void ide_add_generic_settings(ide_drive_t *drive) { ; }
#define PROC_IDE_READ_RETURN(page,start,off,count,eof,len) return 0;
#endif
@ -982,7 +990,7 @@ enum {
* The gendriver.owner field should be set to the module owner of this driver.
* The gendriver.name field should be set to the name of this driver
*/
typedef struct ide_driver_s {
struct ide_driver_s {
const char *version;
u8 media;
unsigned supports_dsc_overlap : 1;
@ -990,12 +998,14 @@ typedef struct ide_driver_s {
int (*end_request)(ide_drive_t *, int, int);
ide_startstop_t (*error)(ide_drive_t *, struct request *rq, u8, u8);
ide_startstop_t (*abort)(ide_drive_t *, struct request *rq);
ide_proc_entry_t *proc;
struct device_driver gen_driver;
int (*probe)(ide_drive_t *);
void (*remove)(ide_drive_t *);
void (*shutdown)(ide_drive_t *);
} ide_driver_t;
#ifdef CONFIG_IDE_PROC_FS
ide_proc_entry_t *proc;
#endif
};
#define to_ide_driver(drv) container_of(drv, ide_driver_t, gen_driver)
@ -1205,9 +1215,6 @@ extern void default_hwif_iops(ide_hwif_t *);
extern void default_hwif_mmiops(ide_hwif_t *);
extern void default_hwif_transport(ide_hwif_t *);
void ide_register_subdriver(ide_drive_t *, ide_driver_t *);
void ide_unregister_subdriver(ide_drive_t *, ide_driver_t *);
#define ON_BOARD 1
#define NEVER_BOARD 0