blob: 8d6ad812a014e3e4a5ea3c1611874d550e3d4bf1 [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;
66 case ide_etrax100: name = "etrax100"; break;
67 case ide_acorn: name = "acorn"; break;
68 default: name = "(unknown)"; break;
Linus Torvalds1da177e2005-04-16 15:20:36 -070069 }
70 len = sprintf(page, "%s\n", name);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +020071 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -070072}
73
74static int proc_ide_read_mate
75 (char *page, char **start, off_t off, int count, int *eof, void *data)
76{
77 ide_hwif_t *hwif = (ide_hwif_t *) data;
78 int len;
79
80 if (hwif && hwif->mate && hwif->mate->present)
81 len = sprintf(page, "%s\n", hwif->mate->name);
82 else
83 len = sprintf(page, "(none)\n");
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +020084 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -070085}
86
87static int proc_ide_read_channel
88 (char *page, char **start, off_t off, int count, int *eof, void *data)
89{
90 ide_hwif_t *hwif = (ide_hwif_t *) data;
91 int len;
92
93 page[0] = hwif->channel ? '1' : '0';
94 page[1] = '\n';
95 len = 2;
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +020096 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -070097}
98
99static int proc_ide_read_identify
100 (char *page, char **start, off_t off, int count, int *eof, void *data)
101{
102 ide_drive_t *drive = (ide_drive_t *)data;
103 int len = 0, i = 0;
104 int err = 0;
105
106 len = sprintf(page, "\n");
107
108 if (drive) {
109 unsigned short *val = (unsigned short *) page;
110
111 err = taskfile_lib_get_identify(drive, page);
112 if (!err) {
113 char *out = ((char *)page) + (SECTOR_WORDS * 4);
114 page = out;
115 do {
116 out += sprintf(out, "%04x%c",
117 le16_to_cpu(*val), (++i & 7) ? ' ' : '\n');
118 val += 1;
119 } while (i < (SECTOR_WORDS * 2));
120 len = out - page;
121 }
122 }
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200123 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124}
125
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200126/**
127 * __ide_add_setting - add an ide setting option
128 * @drive: drive to use
129 * @name: setting name
130 * @rw: true if the function is read write
131 * @data_type: type of data
132 * @min: range minimum
133 * @max: range maximum
134 * @mul_factor: multiplication scale
135 * @div_factor: divison scale
136 * @data: private data field
137 * @set: setting
138 * @auto_remove: setting auto removal flag
139 *
140 * Removes the setting named from the device if it is present.
141 * The function takes the settings_lock to protect against
142 * parallel changes. This function must not be called from IRQ
143 * context. Returns 0 on success or -1 on failure.
144 *
145 * BUGS: This code is seriously over-engineered. There is also
146 * magic about how the driver specific features are setup. If
147 * a driver is attached we assume the driver settings are auto
148 * remove.
149 */
150
151static 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)
152{
153 ide_settings_t **p = (ide_settings_t **) &drive->settings, *setting = NULL;
154
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200155 mutex_lock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200156 while ((*p) && strcmp((*p)->name, name) < 0)
157 p = &((*p)->next);
158 if ((setting = kzalloc(sizeof(*setting), GFP_KERNEL)) == NULL)
159 goto abort;
160 if ((setting->name = kmalloc(strlen(name) + 1, GFP_KERNEL)) == NULL)
161 goto abort;
162 strcpy(setting->name, name);
163 setting->rw = rw;
164 setting->data_type = data_type;
165 setting->min = min;
166 setting->max = max;
167 setting->mul_factor = mul_factor;
168 setting->div_factor = div_factor;
169 setting->data = data;
170 setting->set = set;
171
172 setting->next = *p;
173 if (auto_remove)
174 setting->auto_remove = 1;
175 *p = setting;
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200176 mutex_unlock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200177 return 0;
178abort:
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200179 mutex_unlock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200180 kfree(setting);
181 return -1;
182}
183
184int 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)
185{
186 return __ide_add_setting(drive, name, rw, data_type, min, max, mul_factor, div_factor, data, set, 1);
187}
188
189EXPORT_SYMBOL(ide_add_setting);
190
191/**
192 * __ide_remove_setting - remove an ide setting option
193 * @drive: drive to use
194 * @name: setting name
195 *
196 * Removes the setting named from the device if it is present.
197 * The caller must hold the setting semaphore.
198 */
199
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200200static void __ide_remove_setting(ide_drive_t *drive, char *name)
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200201{
202 ide_settings_t **p, *setting;
203
204 p = (ide_settings_t **) &drive->settings;
205
206 while ((*p) && strcmp((*p)->name, name))
207 p = &((*p)->next);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200208 setting = (*p);
209 if (setting == NULL)
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200210 return;
211
212 (*p) = setting->next;
213
214 kfree(setting->name);
215 kfree(setting);
216}
217
218/**
219 * auto_remove_settings - remove driver specific settings
220 * @drive: drive
221 *
222 * Automatically remove all the driver specific settings for this
223 * drive. This function may not be called from IRQ context. The
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200224 * caller must hold ide_setting_mtx.
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200225 */
226
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200227static void auto_remove_settings(ide_drive_t *drive)
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200228{
229 ide_settings_t *setting;
230repeat:
231 setting = drive->settings;
232 while (setting) {
233 if (setting->auto_remove) {
234 __ide_remove_setting(drive, setting->name);
235 goto repeat;
236 }
237 setting = setting->next;
238 }
239}
240
241/**
242 * ide_find_setting_by_name - find a drive specific setting
243 * @drive: drive to scan
244 * @name: setting name
245 *
246 * Scan's the device setting table for a matching entry and returns
247 * this or NULL if no entry is found. The caller must hold the
248 * setting semaphore
249 */
250
251static ide_settings_t *ide_find_setting_by_name(ide_drive_t *drive, char *name)
252{
253 ide_settings_t *setting = drive->settings;
254
255 while (setting) {
256 if (strcmp(setting->name, name) == 0)
257 break;
258 setting = setting->next;
259 }
260 return setting;
261}
262
263/**
264 * ide_read_setting - read an IDE setting
265 * @drive: drive to read from
266 * @setting: drive setting
267 *
268 * Read a drive setting and return the value. The caller
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200269 * must hold the ide_setting_mtx when making this call.
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200270 *
271 * BUGS: the data return and error are the same return value
272 * so an error -EINVAL and true return of the same value cannot
273 * be told apart
274 */
275
276static int ide_read_setting(ide_drive_t *drive, ide_settings_t *setting)
277{
278 int val = -EINVAL;
279 unsigned long flags;
280
281 if ((setting->rw & SETTING_READ)) {
282 spin_lock_irqsave(&ide_lock, flags);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200283 switch (setting->data_type) {
284 case TYPE_BYTE:
285 val = *((u8 *) setting->data);
286 break;
287 case TYPE_SHORT:
288 val = *((u16 *) setting->data);
289 break;
290 case TYPE_INT:
291 val = *((u32 *) setting->data);
292 break;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200293 }
294 spin_unlock_irqrestore(&ide_lock, flags);
295 }
296 return val;
297}
298
299/**
300 * ide_write_setting - read an IDE setting
301 * @drive: drive to read from
302 * @setting: drive setting
303 * @val: value
304 *
305 * Write a drive setting if it is possible. The caller
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200306 * must hold the ide_setting_mtx when making this call.
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200307 *
308 * BUGS: the data return and error are the same return value
309 * so an error -EINVAL and true return of the same value cannot
310 * be told apart
311 *
312 * FIXME: This should be changed to enqueue a special request
313 * to the driver to change settings, and then wait on a sema for completion.
314 * The current scheme of polling is kludgy, though safe enough.
315 */
316
317static int ide_write_setting(ide_drive_t *drive, ide_settings_t *setting, int val)
318{
319 if (!capable(CAP_SYS_ADMIN))
320 return -EACCES;
321 if (setting->set)
322 return setting->set(drive, val);
323 if (!(setting->rw & SETTING_WRITE))
324 return -EPERM;
325 if (val < setting->min || val > setting->max)
326 return -EINVAL;
327 if (ide_spin_wait_hwgroup(drive))
328 return -EBUSY;
329 switch (setting->data_type) {
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200330 case TYPE_BYTE:
331 *((u8 *) setting->data) = val;
332 break;
333 case TYPE_SHORT:
334 *((u16 *) setting->data) = val;
335 break;
336 case TYPE_INT:
337 *((u32 *) setting->data) = val;
338 break;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200339 }
340 spin_unlock_irq(&ide_lock);
341 return 0;
342}
343
344static int set_xfer_rate (ide_drive_t *drive, int arg)
345{
Bartlomiej Zolnierkiewicz34f5d5a2008-01-26 20:13:12 +0100346 ide_task_t task;
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200347 int err;
348
349 if (arg < 0 || arg > 70)
350 return -EINVAL;
351
Bartlomiej Zolnierkiewicz34f5d5a2008-01-26 20:13:12 +0100352 memset(&task, 0, sizeof(task));
353 task.tf.command = WIN_SETFEATURES;
354 task.tf.feature = SETFEATURES_XFER;
355 task.tf.nsect = (u8)arg;
356 task.tf_flags = IDE_TFLAG_OUT_FEATURE | IDE_TFLAG_OUT_NSECT |
357 IDE_TFLAG_IN_NSECT;
358
359 err = ide_no_data_taskfile(drive, &task);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200360
361 if (!err && arg) {
362 ide_set_xfer_rate(drive, (u8) arg);
363 ide_driveid_update(drive);
364 }
365 return err;
366}
367
368/**
369 * ide_add_generic_settings - generic ide settings
370 * @drive: drive being configured
371 *
372 * Add the generic parts of the system settings to the /proc files.
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200373 * The caller must not be holding the ide_setting_mtx.
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200374 */
375
376void ide_add_generic_settings (ide_drive_t *drive)
377{
378/*
379 * drive setting name read/write access data type min max mul_factor div_factor data pointer set function
380 */
381 __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);
382 __ide_add_setting(drive, "keepsettings", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL, 0);
383 __ide_add_setting(drive, "nice1", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL, 0);
384 __ide_add_setting(drive, "pio_mode", SETTING_WRITE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode, 0);
385 __ide_add_setting(drive, "unmaskirq", drive->no_unmask ? SETTING_READ : SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->unmask, NULL, 0);
386 __ide_add_setting(drive, "using_dma", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->using_dma, set_using_dma, 0);
387 __ide_add_setting(drive, "init_speed", SETTING_RW, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL, 0);
388 __ide_add_setting(drive, "current_speed", SETTING_RW, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate, 0);
389 __ide_add_setting(drive, "number", SETTING_RW, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL, 0);
390}
391
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392static void proc_ide_settings_warn(void)
393{
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200394 static int warned;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395
396 if (warned)
397 return;
398
399 printk(KERN_WARNING "Warning: /proc/ide/hd?/settings interface is "
400 "obsolete, and will be removed soon!\n");
401 warned = 1;
402}
403
404static int proc_ide_read_settings
405 (char *page, char **start, off_t off, int count, int *eof, void *data)
406{
407 ide_drive_t *drive = (ide_drive_t *) data;
408 ide_settings_t *setting = (ide_settings_t *) drive->settings;
409 char *out = page;
410 int len, rc, mul_factor, div_factor;
411
412 proc_ide_settings_warn();
413
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200414 mutex_lock(&ide_setting_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 out += sprintf(out, "name\t\t\tvalue\t\tmin\t\tmax\t\tmode\n");
416 out += sprintf(out, "----\t\t\t-----\t\t---\t\t---\t\t----\n");
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200417 while (setting) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 mul_factor = setting->mul_factor;
419 div_factor = setting->div_factor;
420 out += sprintf(out, "%-24s", setting->name);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200421 rc = ide_read_setting(drive, setting);
422 if (rc >= 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 out += sprintf(out, "%-16d", rc * mul_factor / div_factor);
424 else
425 out += sprintf(out, "%-16s", "write-only");
426 out += sprintf(out, "%-16d%-16d", (setting->min * mul_factor + div_factor - 1) / div_factor, setting->max * mul_factor / div_factor);
427 if (setting->rw & SETTING_READ)
428 out += sprintf(out, "r");
429 if (setting->rw & SETTING_WRITE)
430 out += sprintf(out, "w");
431 out += sprintf(out, "\n");
432 setting = setting->next;
433 }
434 len = out - page;
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200435 mutex_unlock(&ide_setting_mtx);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200436 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437}
438
439#define MAX_LEN 30
440
441static int proc_ide_write_settings(struct file *file, const char __user *buffer,
442 unsigned long count, void *data)
443{
444 ide_drive_t *drive = (ide_drive_t *) data;
445 char name[MAX_LEN + 1];
446 int for_real = 0;
447 unsigned long n;
448 ide_settings_t *setting;
449 char *buf, *s;
450
451 if (!capable(CAP_SYS_ADMIN))
452 return -EACCES;
453
454 proc_ide_settings_warn();
455
456 if (count >= PAGE_SIZE)
457 return -EINVAL;
458
459 s = buf = (char *)__get_free_page(GFP_USER);
460 if (!buf)
461 return -ENOMEM;
462
463 if (copy_from_user(buf, buffer, count)) {
464 free_page((unsigned long)buf);
465 return -EFAULT;
466 }
467
468 buf[count] = '\0';
469
470 /*
471 * Skip over leading whitespace
472 */
473 while (count && isspace(*s)) {
474 --count;
475 ++s;
476 }
477 /*
478 * Do one full pass to verify all parameters,
479 * then do another to actually write the new settings.
480 */
481 do {
482 char *p = s;
483 n = count;
484 while (n > 0) {
485 unsigned val;
486 char *q = p;
487
488 while (n > 0 && *p != ':') {
489 --n;
490 p++;
491 }
492 if (*p != ':')
493 goto parse_error;
494 if (p - q > MAX_LEN)
495 goto parse_error;
496 memcpy(name, q, p - q);
497 name[p - q] = 0;
498
499 if (n > 0) {
500 --n;
501 p++;
502 } else
503 goto parse_error;
504
505 val = simple_strtoul(p, &q, 10);
506 n -= q - p;
507 p = q;
508 if (n > 0 && !isspace(*p))
509 goto parse_error;
510 while (n > 0 && isspace(*p)) {
511 --n;
512 ++p;
513 }
514
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200515 mutex_lock(&ide_setting_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 setting = ide_find_setting_by_name(drive, name);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200517 if (!setting) {
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200518 mutex_unlock(&ide_setting_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519 goto parse_error;
520 }
521 if (for_real)
522 ide_write_setting(drive, setting, val * setting->div_factor / setting->mul_factor);
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200523 mutex_unlock(&ide_setting_mtx);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 }
525 } while (!for_real++);
526 free_page((unsigned long)buf);
527 return count;
528parse_error:
529 free_page((unsigned long)buf);
530 printk("proc_ide_write_settings(): parse error\n");
531 return -EINVAL;
532}
533
534int proc_ide_read_capacity
535 (char *page, char **start, off_t off, int count, int *eof, void *data)
536{
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200537 int len = sprintf(page, "%llu\n", (long long)0x7fffffff);
538 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539}
540
541EXPORT_SYMBOL_GPL(proc_ide_read_capacity);
542
543int proc_ide_read_geometry
544 (char *page, char **start, off_t off, int count, int *eof, void *data)
545{
546 ide_drive_t *drive = (ide_drive_t *) data;
547 char *out = page;
548 int len;
549
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200550 out += sprintf(out, "physical %d/%d/%d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 drive->cyl, drive->head, drive->sect);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200552 out += sprintf(out, "logical %d/%d/%d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553 drive->bios_cyl, drive->bios_head, drive->bios_sect);
554
555 len = out - page;
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200556 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557}
558
559EXPORT_SYMBOL(proc_ide_read_geometry);
560
561static int proc_ide_read_dmodel
562 (char *page, char **start, off_t off, int count, int *eof, void *data)
563{
564 ide_drive_t *drive = (ide_drive_t *) data;
565 struct hd_driveid *id = drive->id;
566 int len;
567
568 len = sprintf(page, "%.40s\n",
569 (id && id->model[0]) ? (char *)id->model : "(none)");
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200570 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700571}
572
573static int proc_ide_read_driver
574 (char *page, char **start, off_t off, int count, int *eof, void *data)
575{
576 ide_drive_t *drive = (ide_drive_t *) data;
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200577 struct device *dev = &drive->gendev;
578 ide_driver_t *ide_drv;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 int len;
580
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200581 if (dev->driver) {
582 ide_drv = container_of(dev->driver, ide_driver_t, gen_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583 len = sprintf(page, "%s version %s\n",
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200584 dev->driver->name, ide_drv->version);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 } else
586 len = sprintf(page, "ide-default version 0.9.newide\n");
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200587 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588}
589
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200590static int ide_replace_subdriver(ide_drive_t *drive, const char *driver)
591{
592 struct device *dev = &drive->gendev;
593 int ret = 1;
Randy Dunlap349ae232006-10-03 01:14:23 -0700594 int err;
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200595
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200596 device_release_driver(dev);
597 /* FIXME: device can still be in use by previous driver */
598 strlcpy(drive->driver_req, driver, sizeof(drive->driver_req));
Randy Dunlap349ae232006-10-03 01:14:23 -0700599 err = device_attach(dev);
600 if (err < 0)
601 printk(KERN_WARNING "IDE: %s: device_attach error: %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200602 __func__, err);
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200603 drive->driver_req[0] = 0;
Randy Dunlap349ae232006-10-03 01:14:23 -0700604 if (dev->driver == NULL) {
605 err = device_attach(dev);
606 if (err < 0)
607 printk(KERN_WARNING
608 "IDE: %s: device_attach(2) error: %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200609 __func__, err);
Randy Dunlap349ae232006-10-03 01:14:23 -0700610 }
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200611 if (dev->driver && !strcmp(dev->driver->name, driver))
612 ret = 0;
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200613
614 return ret;
615}
616
Linus Torvalds1da177e2005-04-16 15:20:36 -0700617static int proc_ide_write_driver
618 (struct file *file, const char __user *buffer, unsigned long count, void *data)
619{
620 ide_drive_t *drive = (ide_drive_t *) data;
621 char name[32];
622
623 if (!capable(CAP_SYS_ADMIN))
624 return -EACCES;
625 if (count > 31)
626 count = 31;
627 if (copy_from_user(name, buffer, count))
628 return -EFAULT;
629 name[count] = '\0';
630 if (ide_replace_subdriver(drive, name))
631 return -EINVAL;
632 return count;
633}
634
635static int proc_ide_read_media
636 (char *page, char **start, off_t off, int count, int *eof, void *data)
637{
638 ide_drive_t *drive = (ide_drive_t *) data;
639 const char *media;
640 int len;
641
642 switch (drive->media) {
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200643 case ide_disk: media = "disk\n"; break;
644 case ide_cdrom: media = "cdrom\n"; break;
645 case ide_tape: media = "tape\n"; break;
646 case ide_floppy: media = "floppy\n"; break;
647 case ide_optical: media = "optical\n"; break;
648 default: media = "UNKNOWN\n"; break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649 }
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200650 strcpy(page, media);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651 len = strlen(media);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200652 PROC_IDE_READ_RETURN(page, start, off, count, eof, len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653}
654
655static ide_proc_entry_t generic_drive_entries[] = {
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200656 { "driver", S_IFREG|S_IRUGO, proc_ide_read_driver,
657 proc_ide_write_driver },
658 { "identify", S_IFREG|S_IRUSR, proc_ide_read_identify, NULL },
659 { "media", S_IFREG|S_IRUGO, proc_ide_read_media, NULL },
660 { "model", S_IFREG|S_IRUGO, proc_ide_read_dmodel, NULL },
661 { "settings", S_IFREG|S_IRUSR|S_IWUSR, proc_ide_read_settings,
662 proc_ide_write_settings },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 { NULL, 0, NULL, NULL }
664};
665
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200666static void ide_add_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p, void *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667{
668 struct proc_dir_entry *ent;
669
670 if (!dir || !p)
671 return;
672 while (p->name != NULL) {
673 ent = create_proc_entry(p->name, p->mode, dir);
674 if (!ent) return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 ent->data = data;
676 ent->read_proc = p->read_proc;
677 ent->write_proc = p->write_proc;
678 p++;
679 }
680}
681
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200682static void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683{
684 if (!dir || !p)
685 return;
686 while (p->name != NULL) {
687 remove_proc_entry(p->name, dir);
688 p++;
689 }
690}
691
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200692void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver)
693{
694 ide_add_proc_entries(drive->proc, driver->proc, drive);
695}
696
697EXPORT_SYMBOL(ide_proc_register_driver);
698
699/**
700 * ide_proc_unregister_driver - remove driver specific data
701 * @drive: drive
702 * @driver: driver
703 *
704 * Clean up the driver specific /proc files and IDE settings
705 * for a given drive.
706 *
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200707 * Takes ide_setting_mtx and ide_lock.
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200708 * Caller must hold none of the locks.
709 */
710
711void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver)
712{
713 unsigned long flags;
714
715 ide_remove_proc_entries(drive->proc, driver->proc);
716
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200717 mutex_lock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200718 spin_lock_irqsave(&ide_lock, flags);
719 /*
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200720 * ide_setting_mtx protects the settings list
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200721 * ide_lock protects the use of settings
722 *
723 * so we need to hold both, ide_settings_sem because we want to
724 * modify the settings list, and ide_lock because we cannot take
725 * a setting out that is being used.
726 *
727 * OTOH both ide_{read,write}_setting are only ever used under
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200728 * ide_setting_mtx.
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200729 */
730 auto_remove_settings(drive);
731 spin_unlock_irqrestore(&ide_lock, flags);
Matthias Kaehlckef9383c42007-07-09 23:17:56 +0200732 mutex_unlock(&ide_setting_mtx);
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200733}
Bartlomiej Zolnierkiewicz7662d042007-05-10 00:01:10 +0200734EXPORT_SYMBOL(ide_proc_unregister_driver);
735
Bartlomiej Zolnierkiewiczd9270a32008-02-02 19:56:43 +0100736void ide_proc_port_register_devices(ide_hwif_t *hwif)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737{
738 int d;
739 struct proc_dir_entry *ent;
740 struct proc_dir_entry *parent = hwif->proc;
741 char name[64];
742
743 for (d = 0; d < MAX_DRIVES; d++) {
744 ide_drive_t *drive = &hwif->drives[d];
745
746 if (!drive->present)
747 continue;
748 if (drive->proc)
749 continue;
750
751 drive->proc = proc_mkdir(drive->name, parent);
752 if (drive->proc)
753 ide_add_proc_entries(drive->proc, generic_drive_entries, drive);
Paolo Ciarrocchi441e92d2008-04-26 17:36:40 +0200754 sprintf(name, "ide%d/%s", (drive->name[2]-'a')/2, drive->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755 ent = proc_symlink(drive->name, proc_ide_root, name);
756 if (!ent) return;
757 }
758}
759
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +0200760void ide_proc_unregister_device(ide_drive_t *drive)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761{
762 if (drive->proc) {
763 ide_remove_proc_entries(drive->proc, generic_drive_entries);
764 remove_proc_entry(drive->name, proc_ide_root);
Bartlomiej Zolnierkiewicz5b0c4b32008-04-18 00:46:22 +0200765 remove_proc_entry(drive->name, drive->hwif->proc);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766 drive->proc = NULL;
767 }
768}
769
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770static ide_proc_entry_t hwif_entries[] = {
771 { "channel", S_IFREG|S_IRUGO, proc_ide_read_channel, NULL },
772 { "mate", S_IFREG|S_IRUGO, proc_ide_read_mate, NULL },
773 { "model", S_IFREG|S_IRUGO, proc_ide_read_imodel, NULL },
774 { NULL, 0, NULL, NULL }
775};
776
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200777void ide_proc_register_port(ide_hwif_t *hwif)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778{
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200779 if (!hwif->proc) {
780 hwif->proc = proc_mkdir(hwif->name, proc_ide_root);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200782 if (!hwif->proc)
783 return;
784
785 ide_add_proc_entries(hwif->proc, hwif_entries, hwif);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 }
787}
788
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200789void ide_proc_unregister_port(ide_hwif_t *hwif)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790{
791 if (hwif->proc) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792 ide_remove_proc_entries(hwif->proc, hwif_entries);
793 remove_proc_entry(hwif->name, proc_ide_root);
794 hwif->proc = NULL;
795 }
796}
797
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200798static int proc_print_driver(struct device_driver *drv, void *data)
799{
800 ide_driver_t *ide_drv = container_of(drv, ide_driver_t, gen_driver);
801 struct seq_file *s = data;
802
803 seq_printf(s, "%s version %s\n", drv->name, ide_drv->version);
804
805 return 0;
806}
807
808static int ide_drivers_show(struct seq_file *s, void *p)
809{
Randy Dunlap349ae232006-10-03 01:14:23 -0700810 int err;
811
812 err = bus_for_each_drv(&ide_bus_type, NULL, s, proc_print_driver);
813 if (err < 0)
814 printk(KERN_WARNING "IDE: %s: bus_for_each_drv error: %d\n",
Harvey Harrisoneb639632008-04-26 22:25:20 +0200815 __func__, err);
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200816 return 0;
817}
818
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819static int ide_drivers_open(struct inode *inode, struct file *file)
820{
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200821 return single_open(file, &ide_drivers_show, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700822}
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200823
Arjan van de Ven2b8693c2007-02-12 00:55:32 -0800824static const struct file_operations ide_drivers_operations = {
Denis V. Lunevc7705f32008-04-29 01:02:35 -0700825 .owner = THIS_MODULE,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826 .open = ide_drivers_open,
827 .read = seq_read,
828 .llseek = seq_lseek,
Bartlomiej Zolnierkiewicz8604aff2005-05-26 14:55:34 +0200829 .release = single_release,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830};
831
832void proc_ide_create(void)
833{
Bartlomiej Zolnierkiewicz5cbf79c2007-05-10 00:01:11 +0200834 proc_ide_root = proc_mkdir("ide", NULL);
835
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836 if (!proc_ide_root)
837 return;
838
Denis V. Lunevc7705f32008-04-29 01:02:35 -0700839 proc_create("drivers", 0, proc_ide_root, &ide_drivers_operations);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840}
841
842void proc_ide_destroy(void)
843{
Zhang, Yanmin643bdc62005-05-16 21:53:11 -0700844 remove_proc_entry("drivers", proc_ide_root);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845 remove_proc_entry("ide", NULL);
846}