/*
- * 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>
+ *
+ * Some code was moved here from ide.c, see it for original copyrights.
*/
/*
*
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <asm/uaccess.h>
#include <linux/errno.h>
-#include <linux/sched.h>
#include <linux/proc_fs.h>
#include <linux/stat.h>
#include <linux/mm.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)
{
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_4drives: name = "4drives"; break;
case ide_pmac: name = "mac-io"; break;
case ide_au1xxx: name = "au1xxx"; break;
+ case ide_palm3710: name = "palm3710"; 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);
}
+/**
+ * __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;
proc_ide_settings_warn();
- down(&ide_setting_sem);
+ 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) {
setting = setting->next;
}
len = out - page;
- up(&ide_setting_sem);
+ mutex_unlock(&ide_setting_mtx);
PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}
++p;
}
- down(&ide_setting_sem);
+ mutex_lock(&ide_setting_mtx);
setting = ide_find_setting_by_name(drive, name);
if (!setting)
{
- up(&ide_setting_sem);
+ mutex_unlock(&ide_setting_mtx);
goto parse_error;
}
if (for_real)
ide_write_setting(drive, setting, val * setting->div_factor / setting->mul_factor);
- up(&ide_setting_sem);
+ mutex_unlock(&ide_setting_mtx);
}
} while (!for_real++);
free_page((unsigned long)buf);
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);
}
{
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));
- device_attach(dev);
+ 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)
- device_attach(dev);
+ 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;
}
break;
case ide_floppy:media = "floppy\n";
break;
+ case ide_optical:media = "optical\n";
+ break;
default: media = "UNKNOWN\n";
break;
}
{ 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;
while (p->name != NULL) {
ent = create_proc_entry(p->name, p->mode, dir);
if (!ent) return;
- ent->nlink = 1;
ent->data = data;
ent->read_proc = p->read_proc;
ent->write_proc = p->write_proc;
}
}
-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;
}
}
-static void create_proc_ide_drives(ide_hwif_t *hwif)
+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);
+
+void ide_proc_port_register_devices(ide_hwif_t *hwif)
{
int d;
struct proc_dir_entry *ent;
}
}
-static void destroy_proc_ide_device(ide_hwif_t *hwif, ide_drive_t *drive)
+void ide_proc_unregister_device(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);
+ remove_proc_entry(drive->name, drive->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 },
{ NULL, 0, NULL, NULL }
};
-void create_proc_ide_interfaces(void)
+void ide_proc_register_port(ide_hwif_t *hwif)
{
- int h;
+ if (!hwif->proc) {
+ hwif->proc = proc_mkdir(hwif->name, proc_ide_root);
- for (h = 0; h < MAX_HWIFS; h++) {
- ide_hwif_t *hwif = &ide_hwifs[h];
+ if (!hwif->proc)
+ return;
- 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);
+ ide_add_proc_entries(hwif->proc, hwif_entries, 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)
{
EXPORT_SYMBOL_GPL(ide_pci_create_host_proc);
#endif
-void destroy_proc_ide_interface(ide_hwif_t *hwif)
+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 ide_drivers_show(struct seq_file *s, void *p)
{
- bus_for_each_drv(&ide_bus_type, NULL, s, proc_print_driver);
+ 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;
}
return single_open(file, &ide_drivers_show, NULL);
}
-static struct file_operations ide_drivers_operations = {
+static const struct file_operations ide_drivers_operations = {
.open = ide_drivers_open,
.read = seq_read,
.llseek = seq_lseek,
{
struct proc_dir_entry *entry;
+ proc_ide_root = proc_mkdir("ide", NULL);
+
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;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff