linux/drivers/ide/ide-proc.c
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00

576 lines
14 KiB
C

/*
* linux/drivers/ide/ide-proc.c Version 1.05 Mar 05, 2003
*
* Copyright (C) 1997-1998 Mark Lord
* Copyright (C) 2003 Red Hat <alan@redhat.com>
*/
/*
* 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 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;
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);
}
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();
down(&ide_setting_sem);
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;
up(&ide_setting_sem);
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;
}
down(&ide_setting_sem);
setting = ide_find_setting_by_name(drive, name);
if (!setting)
{
up(&ide_setting_sem);
goto parse_error;
}
if (for_real)
ide_write_setting(drive, setting, val * setting->div_factor / setting->mul_factor);
up(&ide_setting_sem);
}
} 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;
down_read(&dev->bus->subsys.rwsem);
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");
up_read(&dev->bus->subsys.rwsem);
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;
down_write(&dev->bus->subsys.rwsem);
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;
up_write(&dev->bus->subsys.rwsem);
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 }
};
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++;
}
}
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++;
}
}
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 create_proc_ide_interfaces(void)
{
int h;
for (h = 0; h < MAX_HWIFS; h++) {
ide_hwif_t *hwif = &ide_hwifs[h];
if (!hwif->present)
continue;
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);
}
}
EXPORT_SYMBOL(create_proc_ide_interfaces);
#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 destroy_proc_ide_interface(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;
if (!proc_ide_root)
return;
create_proc_ide_interfaces();
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);
}