/*
* 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.
*/
/*
* This is the /proc/ide/ filesystem implementation.
*
* Drive/Driver settings can be retrieved by reading the drive's
* "settings" files. e.g. "cat /proc/ide0/hda/settings"
* To write a new value "val" into a specific setting "name", use:
* echo "name:val" >/proc/ide/ide0/hda/settings
*
* Also useful, "cat /proc/ide0/hda/[identify, smart_values,
* smart_thresholds, capabilities]" will issue an IDENTIFY /
* PACKET_IDENTIFY / SMART_READ_VALUES / SMART_READ_THRESHOLDS /
* SENSE CAPABILITIES command to /dev/hda, and then dump out the
* returned data as 256 16-bit words. The "hdparm" utility will
* be updated someday soon to use this mechanism.
*
*/
#include <linux/module.h>
#include <asm/uaccess.h>
#include <linux/errno.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/ctype.h>
#include <linux/hdreg.h>
#include <linux/ide.h>
#include <linux/seq_file.h>
#include <asm/io.h>
static struct proc_dir_entry *proc_ide_root;
static int proc_ide_read_imodel
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
ide_hwif_t *hwif = (ide_hwif_t *) data;
int len;
const char *name;
/*
* Neither ide_unknown nor ide_forced should be set at this point.
*/
switch (hwif->chipset) {
case ide_generic: name = "generic"; break;
case ide_pci: name = "pci"; break;
case ide_cmd640: name = "cmd640"; break;
case ide_dtc2278: name = "dtc2278"; break;
case ide_ali14xx: name = "ali14xx"; break;
case ide_qd65xx: name = "qd65xx"; break;
case ide_umc8672: name = "umc8672"; break;
case ide_ht6560b: name = "ht6560b"; break;
case ide_rz1000: name = "rz1000"; break;
case ide_trm290: name = "trm290"; break;
case ide_cmd646: name = "cmd646"; break;
case ide_cy82c693: name = "cy82c693"; break;
case ide_4drives: name = "4drives"; break;
case ide_pmac: name = "mac-io"; break;
case ide_au1xxx: name = "au1xxx"; break;
case ide_etrax100: name = "etrax100"; break;
case ide_acorn: name = "acorn"; break;
default: name = "(unknown)"; break;
}
len = sprintf(page, "%s\n", name);
PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}
static int proc_ide_read_mate
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
ide_hwif_t *hwif = (ide_hwif_t *) data;
int len;
if (hwif && hwif->mate && hwif->mate->present)
len = sprintf(page, "%s\n", hwif->mate->name);
else
len = sprintf(page, "(none)\n");
PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}
static int proc_ide_read_channel
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
ide_hwif_t *hwif = (ide_hwif_t *) data;
int len;
page[0] = hwif->channel ? '1' : '0';
page[1] = '\n';
len = 2;
PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}
static int proc_ide_read_identify
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
ide_drive_t *drive = (ide_drive_t *)data;
int len = 0, i = 0;
int err = 0;
len = sprintf(page, "\n");
if (drive) {
unsigned short *val = (unsigned short *) page;
err = taskfile_lib_get_identify(drive, page);
if (!err) {
char *out = ((char *)page) + (SECTOR_WORDS * 4);
page = out;
do {
out += sprintf(out, "%04x%c",
le16_to_cpu(*val), (++i & 7) ? ' ' : '\n');
val += 1;
} while (i < (SECTOR_WORDS * 2));
len = out - page;
}
}
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;
mutex_lock(&ide_setting_mtx);
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;
mutex_unlock(&ide_setting_mtx);
return 0;
abort:
mutex_unlock(&ide_setting_mtx);
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_mtx.
*/
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_mtx 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_mtx 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)
{
ide_task_t task;
int err;
if (arg < 0 || arg > 70)
return -EINVAL;
memset(&task, 0, sizeof(task));
task.tf.command = WIN_SETFEATURES;
task.tf.feature = SETFEATURES_XFER;
task.tf.nsect = (u8)arg;
task.tf_flags = IDE_TFLAG_OUT_FEATURE | IDE_TFLAG_OUT_NSECT |
IDE_TFLAG_IN_NSECT;
err = ide_no_data_taskfile(drive, &task);
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_mtx.
*/
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;
if (warned)
return;
printk(KERN_WARNING "Warning: /proc/ide/hd?/settings interface is "
"obsolete, and will be removed soon!\n");
warned = 1;
}
static int proc_ide_read_settings
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
ide_drive_t *drive = (ide_drive_t *) data;
ide_settings_t *setting = (ide_settings_t *) drive->settings;
char *out = page;
int len, rc, mul_factor, div_factor;
proc_ide_settings_warn();
mutex_lock(&ide_setting_mtx);
out += sprintf(out, "name\t\t\tvalue\t\tmin\t\tmax\t\tmode\n");
out += sprintf(out, "----\t\t\t-----\t\t---\t\t---\t\t----\n");
while(setting) {
mul_factor = setting->mul_factor;
div_factor = setting->div_factor;
out += sprintf(out, "%-24s", setting->name);
if ((rc = ide_read_setting(drive, setting)) >= 0)
out += sprintf(out, "%-16d", rc * mul_factor / div_factor);
else
out += sprintf(out, "%-16s", "write-only");
out += sprintf(out, "%-16d%-16d", (setting->min * mul_factor + div_factor - 1) / div_factor, setting->max * mul_factor / div_factor);
if (setting->rw & SETTING_READ)
out += sprintf(out, "r");
if (setting->rw & SETTING_WRITE)
out += sprintf(out, "w");
out += sprintf(out, "\n");
setting = setting->next;
}
len = out - page;
mutex_unlock(&ide_setting_mtx);
PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}
#define MAX_LEN 30
static int proc_ide_write_settings(struct file *file, const char __user *buffer,
unsigned long count, void *data)
{
ide_drive_t *drive = (ide_drive_t *) data;
char name[MAX_LEN + 1];
int for_real = 0;
unsigned long n;
ide_settings_t *setting;
char *buf, *s;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
proc_ide_settings_warn();
if (count >= PAGE_SIZE)
return -EINVAL;
s = buf = (char *)__get_free_page(GFP_USER);
if (!buf)
return -ENOMEM;
if (copy_from_user(buf, buffer, count)) {
free_page((unsigned long)buf);
return -EFAULT;
}
buf[count] = '\0';
/*
* Skip over leading whitespace
*/
while (count && isspace(*s)) {
--count;
++s;
}
/*
* Do one full pass to verify all parameters,
* then do another to actually write the new settings.
*/
do {
char *p = s;
n = count;
while (n > 0) {
unsigned val;
char *q = p;
while (n > 0 && *p != ':') {
--n;
p++;
}
if (*p != ':')
goto parse_error;
if (p - q > MAX_LEN)
goto parse_error;
memcpy(name, q, p - q);
name[p - q] = 0;
if (n > 0) {
--n;
p++;
} else
goto parse_error;
val = simple_strtoul(p, &q, 10);
n -= q - p;
p = q;
if (n > 0 && !isspace(*p))
goto parse_error;
while (n > 0 && isspace(*p)) {
--n;
++p;
}
mutex_lock(&ide_setting_mtx);
setting = ide_find_setting_by_name(drive, name);
if (!setting)
{
mutex_unlock(&ide_setting_mtx);
goto parse_error;
}
if (for_real)
ide_write_setting(drive, setting, val * setting->div_factor / setting->mul_factor);
mutex_unlock(&ide_setting_mtx);
}
} while (!for_real++);
free_page((unsigned long)buf);
return count;
parse_error:
free_page((unsigned long)buf);
printk("proc_ide_write_settings(): parse error\n");
return -EINVAL;
}
int proc_ide_read_capacity
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
int len = sprintf(page,"%llu\n", (long long)0x7fffffff);
PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}
EXPORT_SYMBOL_GPL(proc_ide_read_capacity);
int proc_ide_read_geometry
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
ide_drive_t *drive = (ide_drive_t *) data;
char *out = page;
int len;
out += sprintf(out,"physical %d/%d/%d\n",
drive->cyl, drive->head, drive->sect);
out += sprintf(out,"logical %d/%d/%d\n",
drive->bios_cyl, drive->bios_head, drive->bios_sect);
len = out - page;
PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}
EXPORT_SYMBOL(proc_ide_read_geometry);
static int proc_ide_read_dmodel
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
ide_drive_t *drive = (ide_drive_t *) data;
struct hd_driveid *id = drive->id;
int len;
len = sprintf(page, "%.40s\n",
(id && id->model[0]) ? (char *)id->model : "(none)");
PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}
static int proc_ide_read_driver
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
ide_drive_t *drive = (ide_drive_t *) data;
struct device *dev = &drive->gendev;
ide_driver_t *ide_drv;
int len;
if (dev->driver) {
ide_drv = container_of(dev->driver, ide_driver_t, gen_driver);
len = sprintf(page, "%s version %s\n",
dev->driver->name, ide_drv->version);
} else
len = sprintf(page, "ide-default version 0.9.newide\n");
PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}
static int ide_replace_subdriver(ide_drive_t *drive, const char *driver)
{
struct device *dev = &drive->gendev;
int ret = 1;
int err;
device_release_driver(dev);
/* FIXME: device can still be in use by previous driver */
strlcpy(drive->driver_req, driver, sizeof(drive->driver_req));
err = device_attach(dev);
if (err < 0)
printk(KERN_WARNING "IDE: %s: device_attach error: %d\n",
__FUNCTION__, err);
drive->driver_req[0] = 0;
if (dev->driver == NULL) {
err = device_attach(dev);
if (err < 0)
printk(KERN_WARNING
"IDE: %s: device_attach(2) error: %d\n",
__FUNCTION__, err);
}
if (dev->driver && !strcmp(dev->driver->name, driver))
ret = 0;
return ret;
}
static int proc_ide_write_driver
(struct file *file, const char __user *buffer, unsigned long count, void *data)
{
ide_drive_t *drive = (ide_drive_t *) data;
char name[32];
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
if (count > 31)
count = 31;
if (copy_from_user(name, buffer, count))
return -EFAULT;
name[count] = '\0';
if (ide_replace_subdriver(drive, name))
return -EINVAL;
return count;
}
static int proc_ide_read_media
(char *page, char **start, off_t off, int count, int *eof, void *data)
{
ide_drive_t *drive = (ide_drive_t *) data;
const char *media;
int len;
switch (drive->media) {
case ide_disk: media = "disk\n";
break;
case ide_cdrom: media = "cdrom\n";
break;
case ide_tape: media = "tape\n";
break;
case ide_floppy:media = "floppy\n";
break;
case ide_optical:media = "optical\n";
break;
default: media = "UNKNOWN\n";
break;
}
strcpy(page,media);
len = strlen(media);
PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}
static ide_proc_entry_t generic_drive_entries[] = {
{ "driver", S_IFREG|S_IRUGO, proc_ide_read_driver, proc_ide_write_driver },
{ "identify", S_IFREG|S_IRUSR, proc_ide_read_identify, NULL },
{ "media", S_IFREG|S_IRUGO, proc_ide_read_media, NULL },
{ "model", S_IFREG|S_IRUGO, proc_ide_read_dmodel, NULL },
{ "settings", S_IFREG|S_IRUSR|S_IWUSR,proc_ide_read_settings, proc_ide_write_settings },
{ NULL, 0, NULL, NULL }
};
static void ide_add_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p, void *data)
{
struct proc_dir_entry *ent;
if (!dir || !p)
return;
while (p->name != NULL) {
ent = create_proc_entry(p->name, p->mode, dir);
if (!ent) return;
ent->data = data;
ent->read_proc = p->read_proc;
ent->write_proc = p->write_proc;
p++;
}
}
static void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p)
{
if (!dir || !p)
return;
while (p->name != NULL) {
remove_proc_entry(p->name, dir);
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_mtx 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);
mutex_lock(&ide_setting_mtx);
spin_lock_irqsave(&ide_lock, flags);
/*
* ide_setting_mtx 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_mtx.
*/
auto_remove_settings(drive);
spin_unlock_irqrestore(&ide_lock, flags);
mutex_unlock(&ide_setting_mtx);
}
EXPORT_SYMBOL(ide_proc_unregister_driver);
static void create_proc_ide_drives(ide_hwif_t *hwif)
{
int d;
struct proc_dir_entry *ent;
struct proc_dir_entry *parent = hwif->proc;
char name[64];
for (d = 0; d < MAX_DRIVES; d++) {
ide_drive_t *drive = &hwif->drives[d];
if (!drive->present)
continue;
if (drive->proc)
continue;
drive->proc = proc_mkdir(drive->name, parent);
if (drive->proc)
ide_add_proc_entries(drive->proc, generic_drive_entries, drive);
sprintf(name,"ide%d/%s", (drive->name[2]-'a')/2, drive->name);
ent = proc_symlink(drive->name, proc_ide_root, name);
if (!ent) return;
}
}
static void destroy_proc_ide_device(ide_hwif_t *hwif, ide_drive_t *drive)
{
if (drive->proc) {
ide_remove_proc_entries(drive->proc, generic_drive_entries);
remove_proc_entry(drive->name, proc_ide_root);
remove_proc_entry(drive->name, hwif->proc);
drive->proc = NULL;
}
}
static void destroy_proc_ide_drives(ide_hwif_t *hwif)
{
int d;
for (d = 0; d < MAX_DRIVES; d++) {
ide_drive_t *drive = &hwif->drives[d];
if (drive->proc)
destroy_proc_ide_device(hwif, drive);
}
}
static ide_proc_entry_t hwif_entries[] = {
{ "channel", S_IFREG|S_IRUGO, proc_ide_read_channel, NULL },
{ "mate", S_IFREG|S_IRUGO, proc_ide_read_mate, NULL },
{ "model", S_IFREG|S_IRUGO, proc_ide_read_imodel, NULL },
{ NULL, 0, NULL, NULL }
};
void ide_proc_register_port(ide_hwif_t *hwif)
{
if (!hwif->present)
return;
if (!hwif->proc) {
hwif->proc = proc_mkdir(hwif->name, proc_ide_root);
if (!hwif->proc)
return;
ide_add_proc_entries(hwif->proc, hwif_entries, hwif);
}
create_proc_ide_drives(hwif);
}
#ifdef CONFIG_BLK_DEV_IDEPCI
void ide_pci_create_host_proc(const char *name, get_info_t *get_info)
{
create_proc_info_entry(name, 0, proc_ide_root, get_info);
}
EXPORT_SYMBOL_GPL(ide_pci_create_host_proc);
#endif
void ide_proc_unregister_port(ide_hwif_t *hwif)
{
if (hwif->proc) {
destroy_proc_ide_drives(hwif);
ide_remove_proc_entries(hwif->proc, hwif_entries);
remove_proc_entry(hwif->name, proc_ide_root);
hwif->proc = NULL;
}
}
static int proc_print_driver(struct device_driver *drv, void *data)
{
ide_driver_t *ide_drv = container_of(drv, ide_driver_t, gen_driver);
struct seq_file *s = data;
seq_printf(s, "%s version %s\n", drv->name, ide_drv->version);
return 0;
}
static int ide_drivers_show(struct seq_file *s, void *p)
{
int err;
err = bus_for_each_drv(&ide_bus_type, NULL, s, proc_print_driver);
if (err < 0)
printk(KERN_WARNING "IDE: %s: bus_for_each_drv error: %d\n",
__FUNCTION__, err);
return 0;
}
static int ide_drivers_open(struct inode *inode, struct file *file)
{
return single_open(file, &ide_drivers_show, NULL);
}
static const struct file_operations ide_drivers_operations = {
.open = ide_drivers_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
void proc_ide_create(void)
{
struct proc_dir_entry *entry;
proc_ide_root = proc_mkdir("ide", NULL);
if (!proc_ide_root)
return;
entry = create_proc_entry("drivers", 0, proc_ide_root);
if (entry)
entry->proc_fops = &ide_drivers_operations;
}
void proc_ide_destroy(void)
{
remove_proc_entry("drivers", proc_ide_root);
remove_proc_entry("ide", NULL);
}
