blob: f66c9c3f6fc6686d56479a56a902f88822544db3 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002 * Copyright (C) 1997-1998 Mark Lord
3 * Copyright (C) 2003 Red Hat <alan@redhat.com>
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +02004 *
5 * Some code was moved here from ide.c, see it for original copyrights.
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 */
7
8/*
9 * This is the /proc/ide/ filesystem implementation.
10 *
11 * Drive/Driver settings can be retrieved by reading the drive's
12 * "settings" files. e.g. "cat /proc/ide0/hda/settings"
13 * To write a new value "val" into a specific setting "name", use:
14 * echo "name:val" >/proc/ide/ide0/hda/settings
15 *
16 * Also useful, "cat /proc/ide0/hda/[identify, smart_values,
17 * smart_thresholds, capabilities]" will issue an IDENTIFY /
18 * PACKET_IDENTIFY / SMART_READ_VALUES / SMART_READ_THRESHOLDS /
19 * SENSE CAPABILITIES command to /dev/hda, and then dump out the
20 * returned data as 256 16-bit words. The "hdparm" utility will
21 * be updated someday soon to use this mechanism.
22 *
23 */
24
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#include <linux/module.h>
26
27#include <asm/uaccess.h>
28#include <linux/errno.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <linux/proc_fs.h>
30#include <linux/stat.h>
31#include <linux/mm.h>
32#include <linux/pci.h>
33#include <linux/ctype.h>
34#include <linux/hdreg.h>
35#include <linux/ide.h>
36#include <linux/seq_file.h>
37
38#include <asm/io.h>
39
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +020040static struct proc_dir_entry *proc_ide_root;
41
Linus Torvalds1da177e2005-04-16 15:20:36 -070042static int proc_ide_read_imodel
43 (char *page, char **start, off_t off, int count, int *eof, void *data)
44{
45 ide_hwif_t *hwif = (ide_hwif_t *) data;
46 int len;
47 const char *name;
48
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 switch (hwif->chipset) {
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +020050 case ide_generic: name = "generic"; break;
51 case ide_pci: name = "pci"; break;
52 case ide_cmd640: name = "cmd640"; break;
53 case ide_dtc2278: name = "dtc2278"; break;
54 case ide_ali14xx: name = "ali14xx"; break;
55 case ide_qd65xx: name = "qd65xx"; break;
56 case ide_umc8672: name = "umc8672"; break;
57 case ide_ht6560b: name = "ht6560b"; break;
58 case ide_rz1000: name = "rz1000"; break;
59 case ide_trm290: name = "trm290"; break;
60 case ide_cmd646: name = "cmd646"; break;
61 case ide_cy82c693: name = "cy82c693"; break;
62 case ide_4drives: name = "4drives"; break;
63 case ide_pmac: name = "mac-io"; break;
64 case ide_au1xxx: name = "au1xxx"; break;
65 case ide_palm3710: name = "palm3710"; break;
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +020066 case ide_acorn: name = "acorn"; break;
67 default: name = "(unknown)"; break;
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 }
69 len = sprintf(page, "%s\n", name);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +020070 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -070071}
72
73static int proc_ide_read_mate
74 (char *page, char **start, off_t off, int count, int *eof, void *data)
75{
76 ide_hwif_t *hwif = (ide_hwif_t *) data;
77 int len;
78
Bartlomiej Zolnierkiewicz4283e1b2008-06-30 20:14:45 +020079 if (hwif && hwif->mate)
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 len = sprintf(page, "%s\n", hwif->mate->name);
81 else
82 len = sprintf(page, "(none)\n");
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +020083 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -070084}
85
86static int proc_ide_read_channel
87 (char *page, char **start, off_t off, int count, int *eof, void *data)
88{
89 ide_hwif_t *hwif = (ide_hwif_t *) data;
90 int len;
91
92 page[0] = hwif->channel ? '1' : '0';
93 page[1] = '\n';
94 len = 2;
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +020095 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -070096}
97
98static int proc_ide_read_identify
99 (char *page, char **start, off_t off, int count, int *eof, void *data)
100{
101 ide_drive_t *drive = (ide_drive_t *)data;
102 int len = 0, i = 0;
103 int err = 0;
104
105 len = sprintf(page, "\n");
106
107 if (drive) {
Harvey Harrison7fa897b2008-07-24 22:53:34 +0200108 __le16 *val = (__le16 *)page;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109
110 err = taskfile_lib_get_identify(drive, page);
111 if (!err) {
112 char *out = ((char *)page) + (SECTOR_WORDS * 4);
113 page = out;
114 do {
115 out += sprintf(out, "%04x%c",
Harvey Harrison7fa897b2008-07-24 22:53:34 +0200116 le16_to_cpup(val), (++i & 7) ? ' ' : '\n');
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 val += 1;
118 } while (i < (SECTOR_WORDS * 2));
119 len = out - page;
120 }
121 }
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200122 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123}
124
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200125/**
126 * __ide_add_setting - add an ide setting option
127 * @drive: drive to use
128 * @name: setting name
129 * @rw: true if the function is read write
130 * @data_type: type of data
131 * @min: range minimum
132 * @max: range maximum
133 * @mul_factor: multiplication scale
134 * @div_factor: divison scale
135 * @data: private data field
136 * @set: setting
137 * @auto_remove: setting auto removal flag
138 *
139 * Removes the setting named from the device if it is present.
140 * The function takes the settings_lock to protect against
141 * parallel changes. This function must not be called from IRQ
142 * context. Returns 0 on success or -1 on failure.
143 *
144 * BUGS: This code is seriously over-engineered. There is also
145 * magic about how the driver specific features are setup. If
146 * a driver is attached we assume the driver settings are auto
147 * remove.
148 */
149
150static 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)
151{
152 ide_settings_t **p = (ide_settings_t **) &drive->settings, *setting = NULL;
153
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200154 mutex_lock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200155 while ((*p) && strcmp((*p)->name, name) < 0)
156 p = &((*p)->next);
157 if ((setting = kzalloc(sizeof(*setting), GFP_KERNEL)) == NULL)
158 goto abort;
159 if ((setting->name = kmalloc(strlen(name) + 1, GFP_KERNEL)) == NULL)
160 goto abort;
161 strcpy(setting->name, name);
162 setting->rw = rw;
163 setting->data_type = data_type;
164 setting->min = min;
165 setting->max = max;
166 setting->mul_factor = mul_factor;
167 setting->div_factor = div_factor;
168 setting->data = data;
169 setting->set = set;
170
171 setting->next = *p;
172 if (auto_remove)
173 setting->auto_remove = 1;
174 *p = setting;
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200175 mutex_unlock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200176 return 0;
177abort:
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200178 mutex_unlock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200179 kfree(setting);
180 return -1;
181}
182
183int 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)
184{
185 return __ide_add_setting(drive, name, rw, data_type, min, max, mul_factor, div_factor, data, set, 1);
186}
187
188EXPORT_SYMBOL(ide_add_setting);
189
190/**
191 * __ide_remove_setting - remove an ide setting option
192 * @drive: drive to use
193 * @name: setting name
194 *
195 * Removes the setting named from the device if it is present.
196 * The caller must hold the setting semaphore.
197 */
198
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200199static void __ide_remove_setting(ide_drive_t *drive, char *name)
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200200{
201 ide_settings_t **p, *setting;
202
203 p = (ide_settings_t **) &drive->settings;
204
205 while ((*p) && strcmp((*p)->name, name))
206 p = &((*p)->next);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200207 setting = (*p);
208 if (setting == NULL)
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200209 return;
210
211 (*p) = setting->next;
212
213 kfree(setting->name);
214 kfree(setting);
215}
216
217/**
218 * auto_remove_settings - remove driver specific settings
219 * @drive: drive
220 *
221 * Automatically remove all the driver specific settings for this
222 * drive. This function may not be called from IRQ context. The
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200223 * caller must hold ide_setting_mtx.
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200224 */
225
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200226static void auto_remove_settings(ide_drive_t *drive)
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200227{
228 ide_settings_t *setting;
229repeat:
230 setting = drive->settings;
231 while (setting) {
232 if (setting->auto_remove) {
233 __ide_remove_setting(drive, setting->name);
234 goto repeat;
235 }
236 setting = setting->next;
237 }
238}
239
240/**
241 * ide_find_setting_by_name - find a drive specific setting
242 * @drive: drive to scan
243 * @name: setting name
244 *
245 * Scan's the device setting table for a matching entry and returns
246 * this or NULL if no entry is found. The caller must hold the
247 * setting semaphore
248 */
249
250static ide_settings_t *ide_find_setting_by_name(ide_drive_t *drive, char *name)
251{
252 ide_settings_t *setting = drive->settings;
253
254 while (setting) {
255 if (strcmp(setting->name, name) == 0)
256 break;
257 setting = setting->next;
258 }
259 return setting;
260}
261
262/**
263 * ide_read_setting - read an IDE setting
264 * @drive: drive to read from
265 * @setting: drive setting
266 *
267 * Read a drive setting and return the value. The caller
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200268 * must hold the ide_setting_mtx when making this call.
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200269 *
270 * BUGS: the data return and error are the same return value
271 * so an error -EINVAL and true return of the same value cannot
272 * be told apart
273 */
274
275static int ide_read_setting(ide_drive_t *drive, ide_settings_t *setting)
276{
277 int val = -EINVAL;
278 unsigned long flags;
279
280 if ((setting->rw & SETTING_READ)) {
281 spin_lock_irqsave(&ide_lock, flags);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200282 switch (setting->data_type) {
283 case TYPE_BYTE:
284 val = *((u8 *) setting->data);
285 break;
286 case TYPE_SHORT:
287 val = *((u16 *) setting->data);
288 break;
289 case TYPE_INT:
290 val = *((u32 *) setting->data);
291 break;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200292 }
293 spin_unlock_irqrestore(&ide_lock, flags);
294 }
295 return val;
296}
297
298/**
299 * ide_write_setting - read an IDE setting
300 * @drive: drive to read from
301 * @setting: drive setting
302 * @val: value
303 *
304 * Write a drive setting if it is possible. The caller
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200305 * must hold the ide_setting_mtx when making this call.
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200306 *
307 * BUGS: the data return and error are the same return value
308 * so an error -EINVAL and true return of the same value cannot
309 * be told apart
310 *
311 * FIXME: This should be changed to enqueue a special request
312 * to the driver to change settings, and then wait on a sema for completion.
313 * The current scheme of polling is kludgy, though safe enough.
314 */
315
316static int ide_write_setting(ide_drive_t *drive, ide_settings_t *setting, int val)
317{
318 if (!capable(CAP_SYS_ADMIN))
319 return -EACCES;
320 if (setting->set)
321 return setting->set(drive, val);
322 if (!(setting->rw & SETTING_WRITE))
323 return -EPERM;
324 if (val < setting->min || val > setting->max)
325 return -EINVAL;
326 if (ide_spin_wait_hwgroup(drive))
327 return -EBUSY;
328 switch (setting->data_type) {
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200329 case TYPE_BYTE:
330 *((u8 *) setting->data) = val;
331 break;
332 case TYPE_SHORT:
333 *((u16 *) setting->data) = val;
334 break;
335 case TYPE_INT:
336 *((u32 *) setting->data) = val;
337 break;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200338 }
339 spin_unlock_irq(&ide_lock);
340 return 0;
341}
342
343static int set_xfer_rate (ide_drive_t *drive, int arg)
344{
Bartlomiej Zolnierkiewicz34f5d5a2008-01-26 20:13:12 +0100345 ide_task_t task;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200346 int err;
347
Bartlomiej Zolnierkiewicz3b2a5c72008-07-23 19:55:56 +0200348 if (arg < XFER_PIO_0 || arg > XFER_UDMA_6)
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200349 return -EINVAL;
350
Bartlomiej Zolnierkiewicz34f5d5a2008-01-26 20:13:12 +0100351 memset(&task, 0, sizeof(task));
352 task.tf.command = WIN_SETFEATURES;
353 task.tf.feature = SETFEATURES_XFER;
354 task.tf.nsect = (u8)arg;
355 task.tf_flags = IDE_TFLAG_OUT_FEATURE | IDE_TFLAG_OUT_NSECT |
356 IDE_TFLAG_IN_NSECT;
357
358 err = ide_no_data_taskfile(drive, &task);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200359
Bartlomiej Zolnierkiewicz3b2a5c72008-07-23 19:55:56 +0200360 if (!err) {
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200361 ide_set_xfer_rate(drive, (u8) arg);
362 ide_driveid_update(drive);
363 }
364 return err;
365}
366
367/**
368 * ide_add_generic_settings - generic ide settings
369 * @drive: drive being configured
370 *
371 * Add the generic parts of the system settings to the /proc files.
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200372 * The caller must not be holding the ide_setting_mtx.
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200373 */
374
375void ide_add_generic_settings (ide_drive_t *drive)
376{
377/*
378 * drive setting name read/write access data type min max mul_factor div_factor data pointer set function
379 */
380 __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);
381 __ide_add_setting(drive, "keepsettings", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL, 0);
382 __ide_add_setting(drive, "nice1", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL, 0);
383 __ide_add_setting(drive, "pio_mode", SETTING_WRITE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode, 0);
384 __ide_add_setting(drive, "unmaskirq", drive->no_unmask ? SETTING_READ : SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->unmask, NULL, 0);
385 __ide_add_setting(drive, "using_dma", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->using_dma, set_using_dma, 0);
386 __ide_add_setting(drive, "init_speed", SETTING_RW, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL, 0);
387 __ide_add_setting(drive, "current_speed", SETTING_RW, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate, 0);
388 __ide_add_setting(drive, "number", SETTING_RW, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL, 0);
389}
390
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391static void proc_ide_settings_warn(void)
392{
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200393 static int warned;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394
395 if (warned)
396 return;
397
398 printk(KERN_WARNING "Warning: /proc/ide/hd?/settings interface is "
399 "obsolete, and will be removed soon!\n");
400 warned = 1;
401}
402
403static int proc_ide_read_settings
404 (char *page, char **start, off_t off, int count, int *eof, void *data)
405{
406 ide_drive_t *drive = (ide_drive_t *) data;
407 ide_settings_t *setting = (ide_settings_t *) drive->settings;
408 char *out = page;
409 int len, rc, mul_factor, div_factor;
410
411 proc_ide_settings_warn();
412
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200413 mutex_lock(&ide_setting_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 out += sprintf(out, "name\t\t\tvalue\t\tmin\t\tmax\t\tmode\n");
415 out += sprintf(out, "----\t\t\t-----\t\t---\t\t---\t\t----\n");
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200416 while (setting) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 mul_factor = setting->mul_factor;
418 div_factor = setting->div_factor;
419 out += sprintf(out, "%-24s", setting->name);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200420 rc = ide_read_setting(drive, setting);
421 if (rc >= 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 out += sprintf(out, "%-16d", rc * mul_factor / div_factor);
423 else
424 out += sprintf(out, "%-16s", "write-only");
425 out += sprintf(out, "%-16d%-16d", (setting->min * mul_factor + div_factor - 1) / div_factor, setting->max * mul_factor / div_factor);
426 if (setting->rw & SETTING_READ)
427 out += sprintf(out, "r");
428 if (setting->rw & SETTING_WRITE)
429 out += sprintf(out, "w");
430 out += sprintf(out, "\n");
431 setting = setting->next;
432 }
433 len = out - page;
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200434 mutex_unlock(&ide_setting_mtx);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200435 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436}
437
438#define MAX_LEN 30
439
440static int proc_ide_write_settings(struct file *file, const char __user *buffer,
441 unsigned long count, void *data)
442{
443 ide_drive_t *drive = (ide_drive_t *) data;
444 char name[MAX_LEN + 1];
445 int for_real = 0;
446 unsigned long n;
447 ide_settings_t *setting;
448 char *buf, *s;
449
450 if (!capable(CAP_SYS_ADMIN))
451 return -EACCES;
452
453 proc_ide_settings_warn();
454
455 if (count >= PAGE_SIZE)
456 return -EINVAL;
457
458 s = buf = (char *)__get_free_page(GFP_USER);
459 if (!buf)
460 return -ENOMEM;
461
462 if (copy_from_user(buf, buffer, count)) {
463 free_page((unsigned long)buf);
464 return -EFAULT;
465 }
466
467 buf[count] = '\0';
468
469 /*
470 * Skip over leading whitespace
471 */
472 while (count && isspace(*s)) {
473 --count;
474 ++s;
475 }
476 /*
477 * Do one full pass to verify all parameters,
478 * then do another to actually write the new settings.
479 */
480 do {
481 char *p = s;
482 n = count;
483 while (n > 0) {
484 unsigned val;
485 char *q = p;
486
487 while (n > 0 && *p != ':') {
488 --n;
489 p++;
490 }
491 if (*p != ':')
492 goto parse_error;
493 if (p - q > MAX_LEN)
494 goto parse_error;
495 memcpy(name, q, p - q);
496 name[p - q] = 0;
497
498 if (n > 0) {
499 --n;
500 p++;
501 } else
502 goto parse_error;
503
504 val = simple_strtoul(p, &q, 10);
505 n -= q - p;
506 p = q;
507 if (n > 0 && !isspace(*p))
508 goto parse_error;
509 while (n > 0 && isspace(*p)) {
510 --n;
511 ++p;
512 }
513
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200514 mutex_lock(&ide_setting_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 setting = ide_find_setting_by_name(drive, name);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200516 if (!setting) {
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200517 mutex_unlock(&ide_setting_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 goto parse_error;
519 }
520 if (for_real)
521 ide_write_setting(drive, setting, val * setting->div_factor / setting->mul_factor);
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200522 mutex_unlock(&ide_setting_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 }
524 } while (!for_real++);
525 free_page((unsigned long)buf);
526 return count;
527parse_error:
528 free_page((unsigned long)buf);
529 printk("proc_ide_write_settings(): parse error\n");
530 return -EINVAL;
531}
532
533int proc_ide_read_capacity
534 (char *page, char **start, off_t off, int count, int *eof, void *data)
535{
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200536 int len = sprintf(page, "%llu\n", (long long)0x7fffffff);
537 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700538}
539
540EXPORT_SYMBOL_GPL(proc_ide_read_capacity);
541
542int proc_ide_read_geometry
543 (char *page, char **start, off_t off, int count, int *eof, void *data)
544{
545 ide_drive_t *drive = (ide_drive_t *) data;
546 char *out = page;
547 int len;
548
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200549 out += sprintf(out, "physical %d/%d/%d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 drive->cyl, drive->head, drive->sect);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200551 out += sprintf(out, "logical %d/%d/%d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 drive->bios_cyl, drive->bios_head, drive->bios_sect);
553
554 len = out - page;
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200555 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556}
557
558EXPORT_SYMBOL(proc_ide_read_geometry);
559
560static int proc_ide_read_dmodel
561 (char *page, char **start, off_t off, int count, int *eof, void *data)
562{
563 ide_drive_t *drive = (ide_drive_t *) data;
564 struct hd_driveid *id = drive->id;
565 int len;
566
567 len = sprintf(page, "%.40s\n",
568 (id && id->model[0]) ? (char *)id->model : "(none)");
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200569 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570}
571
572static int proc_ide_read_driver
573 (char *page, char **start, off_t off, int count, int *eof, void *data)
574{
575 ide_drive_t *drive = (ide_drive_t *) data;
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200576 struct device *dev = &drive->gendev;
577 ide_driver_t *ide_drv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 int len;
579
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200580 if (dev->driver) {
581 ide_drv = container_of(dev->driver, ide_driver_t, gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582 len = sprintf(page, "%s version %s\n",
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200583 dev->driver->name, ide_drv->version);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584 } else
585 len = sprintf(page, "ide-default version 0.9.newide\n");
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200586 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587}
588
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200589static int ide_replace_subdriver(ide_drive_t *drive, const char *driver)
590{
591 struct device *dev = &drive->gendev;
592 int ret = 1;
Randy Dunlap349ae232006-10-03 01:14:23 -0700593 int err;
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200594
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200595 device_release_driver(dev);
596 /* FIXME: device can still be in use by previous driver */
597 strlcpy(drive->driver_req, driver, sizeof(drive->driver_req));
Randy Dunlap349ae232006-10-03 01:14:23 -0700598 err = device_attach(dev);
599 if (err < 0)
600 printk(KERN_WARNING "IDE: %s: device_attach error: %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200601 __func__, err);
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200602 drive->driver_req[0] = 0;
Randy Dunlap349ae232006-10-03 01:14:23 -0700603 if (dev->driver == NULL) {
604 err = device_attach(dev);
605 if (err < 0)
606 printk(KERN_WARNING
607 "IDE: %s: device_attach(2) error: %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200608 __func__, err);
Randy Dunlap349ae232006-10-03 01:14:23 -0700609 }
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200610 if (dev->driver && !strcmp(dev->driver->name, driver))
611 ret = 0;
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200612
613 return ret;
614}
615
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616static int proc_ide_write_driver
617 (struct file *file, const char __user *buffer, unsigned long count, void *data)
618{
619 ide_drive_t *drive = (ide_drive_t *) data;
620 char name[32];
621
622 if (!capable(CAP_SYS_ADMIN))
623 return -EACCES;
624 if (count > 31)
625 count = 31;
626 if (copy_from_user(name, buffer, count))
627 return -EFAULT;
628 name[count] = '\0';
629 if (ide_replace_subdriver(drive, name))
630 return -EINVAL;
631 return count;
632}
633
634static int proc_ide_read_media
635 (char *page, char **start, off_t off, int count, int *eof, void *data)
636{
637 ide_drive_t *drive = (ide_drive_t *) data;
638 const char *media;
639 int len;
640
641 switch (drive->media) {
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200642 case ide_disk: media = "disk\n"; break;
643 case ide_cdrom: media = "cdrom\n"; break;
644 case ide_tape: media = "tape\n"; break;
645 case ide_floppy: media = "floppy\n"; break;
646 case ide_optical: media = "optical\n"; break;
647 default: media = "UNKNOWN\n"; break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700648 }
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200649 strcpy(page, media);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700650 len = strlen(media);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200651 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700652}
653
654static ide_proc_entry_t generic_drive_entries[] = {
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200655 { "driver", S_IFREG|S_IRUGO, proc_ide_read_driver,
656 proc_ide_write_driver },
657 { "identify", S_IFREG|S_IRUSR, proc_ide_read_identify, NULL },
658 { "media", S_IFREG|S_IRUGO, proc_ide_read_media, NULL },
659 { "model", S_IFREG|S_IRUGO, proc_ide_read_dmodel, NULL },
660 { "settings", S_IFREG|S_IRUSR|S_IWUSR, proc_ide_read_settings,
661 proc_ide_write_settings },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662 { NULL, 0, NULL, NULL }
663};
664
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200665static void ide_add_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666{
667 struct proc_dir_entry *ent;
668
669 if (!dir || !p)
670 return;
671 while (p->name != NULL) {
672 ent = create_proc_entry(p->name, p->mode, dir);
673 if (!ent) return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674 ent->data = data;
675 ent->read_proc = p->read_proc;
676 ent->write_proc = p->write_proc;
677 p++;
678 }
679}
680
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200681static void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682{
683 if (!dir || !p)
684 return;
685 while (p->name != NULL) {
686 remove_proc_entry(p->name, dir);
687 p++;
688 }
689}
690
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200691void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver)
692{
693 ide_add_proc_entries(drive->proc, driver->proc, drive);
694}
695
696EXPORT_SYMBOL(ide_proc_register_driver);
697
698/**
699 * ide_proc_unregister_driver - remove driver specific data
700 * @drive: drive
701 * @driver: driver
702 *
703 * Clean up the driver specific /proc files and IDE settings
704 * for a given drive.
705 *
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200706 * Takes ide_setting_mtx and ide_lock.
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200707 * Caller must hold none of the locks.
708 */
709
710void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver)
711{
712 unsigned long flags;
713
714 ide_remove_proc_entries(drive->proc, driver->proc);
715
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200716 mutex_lock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200717 spin_lock_irqsave(&ide_lock, flags);
718 /*
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200719 * ide_setting_mtx protects the settings list
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200720 * ide_lock protects the use of settings
721 *
722 * so we need to hold both, ide_settings_sem because we want to
723 * modify the settings list, and ide_lock because we cannot take
724 * a setting out that is being used.
725 *
726 * OTOH both ide_{read,write}_setting are only ever used under
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200727 * ide_setting_mtx.
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200728 */
729 auto_remove_settings(drive);
730 spin_unlock_irqrestore(&ide_lock, flags);
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200731 mutex_unlock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200732}
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200733EXPORT_SYMBOL(ide_proc_unregister_driver);
734
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +0100735void ide_proc_port_register_devices(ide_hwif_t *hwif)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736{
737 int d;
738 struct proc_dir_entry *ent;
739 struct proc_dir_entry *parent = hwif->proc;
740 char name[64];
741
742 for (d = 0; d < MAX_DRIVES; d++) {
743 ide_drive_t *drive = &hwif->drives[d];
744
745 if (!drive->present)
746 continue;
747 if (drive->proc)
748 continue;
749
750 drive->proc = proc_mkdir(drive->name, parent);
751 if (drive->proc)
752 ide_add_proc_entries(drive->proc, generic_drive_entries, drive);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200753 sprintf(name, "ide%d/%s", (drive->name[2]-'a')/2, drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754 ent = proc_symlink(drive->name, proc_ide_root, name);
755 if (!ent) return;
756 }
757}
758
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +0200759void ide_proc_unregister_device(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760{
761 if (drive->proc) {
762 ide_remove_proc_entries(drive->proc, generic_drive_entries);
763 remove_proc_entry(drive->name, proc_ide_root);
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +0200764 remove_proc_entry(drive->name, drive->hwif->proc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765 drive->proc = NULL;
766 }
767}
768
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769static ide_proc_entry_t hwif_entries[] = {
770 { "channel", S_IFREG|S_IRUGO, proc_ide_read_channel, NULL },
771 { "mate", S_IFREG|S_IRUGO, proc_ide_read_mate, NULL },
772 { "model", S_IFREG|S_IRUGO, proc_ide_read_imodel, NULL },
773 { NULL, 0, NULL, NULL }
774};
775
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200776void ide_proc_register_port(ide_hwif_t *hwif)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777{
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200778 if (!hwif->proc) {
779 hwif->proc = proc_mkdir(hwif->name, proc_ide_root);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200781 if (!hwif->proc)
782 return;
783
784 ide_add_proc_entries(hwif->proc, hwif_entries, hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785 }
786}
787
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200788void ide_proc_unregister_port(ide_hwif_t *hwif)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789{
790 if (hwif->proc) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791 ide_remove_proc_entries(hwif->proc, hwif_entries);
792 remove_proc_entry(hwif->name, proc_ide_root);
793 hwif->proc = NULL;
794 }
795}
796
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200797static int proc_print_driver(struct device_driver *drv, void *data)
798{
799 ide_driver_t *ide_drv = container_of(drv, ide_driver_t, gen_driver);
800 struct seq_file *s = data;
801
802 seq_printf(s, "%s version %s\n", drv->name, ide_drv->version);
803
804 return 0;
805}
806
807static int ide_drivers_show(struct seq_file *s, void *p)
808{
Randy Dunlap349ae232006-10-03 01:14:23 -0700809 int err;
810
811 err = bus_for_each_drv(&ide_bus_type, NULL, s, proc_print_driver);
812 if (err < 0)
813 printk(KERN_WARNING "IDE: %s: bus_for_each_drv error: %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200814 __func__, err);
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200815 return 0;
816}
817
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818static int ide_drivers_open(struct inode *inode, struct file *file)
819{
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200820 return single_open(file, &ide_drivers_show, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821}
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200822
Arjan van de Ven2b8693c2007-02-12 00:55:32 -0800823static const struct file_operations ide_drivers_operations = {
Denis V. Lunevc7705f32008-04-29 01:02:35 -0700824 .owner = THIS_MODULE,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 .open = ide_drivers_open,
826 .read = seq_read,
827 .llseek = seq_lseek,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200828 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829};
830
831void proc_ide_create(void)
832{
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200833 proc_ide_root = proc_mkdir("ide", NULL);
834
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835 if (!proc_ide_root)
836 return;
837
Denis V. Lunevc7705f32008-04-29 01:02:35 -0700838 proc_create("drivers", 0, proc_ide_root, &ide_drivers_operations);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839}
840
841void proc_ide_destroy(void)
842{
Zhang, Yanmin643bdc62005-05-16 21:53:11 -0700843 remove_proc_entry("drivers", proc_ide_root);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844 remove_proc_entry("ide", NULL);
845}