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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
2 | * Copyright (C) 1997-1998 Mark Lord |
3 | * Copyright (C) 2003 Red Hat <alan@redhat.com> | |
7662d046 BZ |
4 | * |
5 | * Some code was moved here from ide.c, see it for original copyrights. | |
1da177e4 LT |
6 | */ |
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 | |
1da177e4 LT |
15 | */ |
16 | ||
1da177e4 LT |
17 | #include <linux/module.h> |
18 | ||
19 | #include <asm/uaccess.h> | |
20 | #include <linux/errno.h> | |
1da177e4 LT |
21 | #include <linux/proc_fs.h> |
22 | #include <linux/stat.h> | |
23 | #include <linux/mm.h> | |
24 | #include <linux/pci.h> | |
25 | #include <linux/ctype.h> | |
1da177e4 LT |
26 | #include <linux/ide.h> |
27 | #include <linux/seq_file.h> | |
28 | ||
29 | #include <asm/io.h> | |
30 | ||
5cbf79cd BZ |
31 | static struct proc_dir_entry *proc_ide_root; |
32 | ||
1da177e4 LT |
33 | static int proc_ide_read_imodel |
34 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
35 | { | |
36 | ide_hwif_t *hwif = (ide_hwif_t *) data; | |
37 | int len; | |
38 | const char *name; | |
39 | ||
1da177e4 | 40 | switch (hwif->chipset) { |
441e92da PC |
41 | case ide_generic: name = "generic"; break; |
42 | case ide_pci: name = "pci"; break; | |
43 | case ide_cmd640: name = "cmd640"; break; | |
44 | case ide_dtc2278: name = "dtc2278"; break; | |
45 | case ide_ali14xx: name = "ali14xx"; break; | |
46 | case ide_qd65xx: name = "qd65xx"; break; | |
47 | case ide_umc8672: name = "umc8672"; break; | |
48 | case ide_ht6560b: name = "ht6560b"; break; | |
49 | case ide_rz1000: name = "rz1000"; break; | |
50 | case ide_trm290: name = "trm290"; break; | |
51 | case ide_cmd646: name = "cmd646"; break; | |
52 | case ide_cy82c693: name = "cy82c693"; break; | |
53 | case ide_4drives: name = "4drives"; break; | |
54 | case ide_pmac: name = "mac-io"; break; | |
55 | case ide_au1xxx: name = "au1xxx"; break; | |
56 | case ide_palm3710: name = "palm3710"; break; | |
441e92da PC |
57 | case ide_acorn: name = "acorn"; break; |
58 | default: name = "(unknown)"; break; | |
1da177e4 LT |
59 | } |
60 | len = sprintf(page, "%s\n", name); | |
441e92da | 61 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
62 | } |
63 | ||
64 | static int proc_ide_read_mate | |
65 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
66 | { | |
67 | ide_hwif_t *hwif = (ide_hwif_t *) data; | |
68 | int len; | |
69 | ||
4283e1ba | 70 | if (hwif && hwif->mate) |
1da177e4 LT |
71 | len = sprintf(page, "%s\n", hwif->mate->name); |
72 | else | |
73 | len = sprintf(page, "(none)\n"); | |
441e92da | 74 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
75 | } |
76 | ||
77 | static int proc_ide_read_channel | |
78 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
79 | { | |
80 | ide_hwif_t *hwif = (ide_hwif_t *) data; | |
81 | int len; | |
82 | ||
83 | page[0] = hwif->channel ? '1' : '0'; | |
84 | page[1] = '\n'; | |
85 | len = 2; | |
441e92da | 86 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
87 | } |
88 | ||
89 | static int proc_ide_read_identify | |
90 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
91 | { | |
92 | ide_drive_t *drive = (ide_drive_t *)data; | |
93 | int len = 0, i = 0; | |
94 | int err = 0; | |
95 | ||
96 | len = sprintf(page, "\n"); | |
97 | ||
98 | if (drive) { | |
7fa897b9 | 99 | __le16 *val = (__le16 *)page; |
1da177e4 LT |
100 | |
101 | err = taskfile_lib_get_identify(drive, page); | |
102 | if (!err) { | |
103 | char *out = ((char *)page) + (SECTOR_WORDS * 4); | |
104 | page = out; | |
105 | do { | |
106 | out += sprintf(out, "%04x%c", | |
7fa897b9 | 107 | le16_to_cpup(val), (++i & 7) ? ' ' : '\n'); |
1da177e4 LT |
108 | val += 1; |
109 | } while (i < (SECTOR_WORDS * 2)); | |
110 | len = out - page; | |
111 | } | |
112 | } | |
441e92da | 113 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
114 | } |
115 | ||
7662d046 BZ |
116 | /** |
117 | * __ide_add_setting - add an ide setting option | |
118 | * @drive: drive to use | |
119 | * @name: setting name | |
120 | * @rw: true if the function is read write | |
121 | * @data_type: type of data | |
122 | * @min: range minimum | |
123 | * @max: range maximum | |
124 | * @mul_factor: multiplication scale | |
125 | * @div_factor: divison scale | |
126 | * @data: private data field | |
127 | * @set: setting | |
128 | * @auto_remove: setting auto removal flag | |
129 | * | |
130 | * Removes the setting named from the device if it is present. | |
131 | * The function takes the settings_lock to protect against | |
132 | * parallel changes. This function must not be called from IRQ | |
133 | * context. Returns 0 on success or -1 on failure. | |
134 | * | |
135 | * BUGS: This code is seriously over-engineered. There is also | |
136 | * magic about how the driver specific features are setup. If | |
137 | * a driver is attached we assume the driver settings are auto | |
138 | * remove. | |
139 | */ | |
140 | ||
141 | 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) | |
142 | { | |
143 | ide_settings_t **p = (ide_settings_t **) &drive->settings, *setting = NULL; | |
144 | ||
f9383c42 | 145 | mutex_lock(&ide_setting_mtx); |
7662d046 BZ |
146 | while ((*p) && strcmp((*p)->name, name) < 0) |
147 | p = &((*p)->next); | |
148 | if ((setting = kzalloc(sizeof(*setting), GFP_KERNEL)) == NULL) | |
149 | goto abort; | |
150 | if ((setting->name = kmalloc(strlen(name) + 1, GFP_KERNEL)) == NULL) | |
151 | goto abort; | |
152 | strcpy(setting->name, name); | |
153 | setting->rw = rw; | |
154 | setting->data_type = data_type; | |
155 | setting->min = min; | |
156 | setting->max = max; | |
157 | setting->mul_factor = mul_factor; | |
158 | setting->div_factor = div_factor; | |
159 | setting->data = data; | |
160 | setting->set = set; | |
161 | ||
162 | setting->next = *p; | |
163 | if (auto_remove) | |
164 | setting->auto_remove = 1; | |
165 | *p = setting; | |
f9383c42 | 166 | mutex_unlock(&ide_setting_mtx); |
7662d046 BZ |
167 | return 0; |
168 | abort: | |
f9383c42 | 169 | mutex_unlock(&ide_setting_mtx); |
7662d046 BZ |
170 | kfree(setting); |
171 | return -1; | |
172 | } | |
173 | ||
174 | 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) | |
175 | { | |
176 | return __ide_add_setting(drive, name, rw, data_type, min, max, mul_factor, div_factor, data, set, 1); | |
177 | } | |
178 | ||
179 | EXPORT_SYMBOL(ide_add_setting); | |
180 | ||
181 | /** | |
182 | * __ide_remove_setting - remove an ide setting option | |
183 | * @drive: drive to use | |
184 | * @name: setting name | |
185 | * | |
186 | * Removes the setting named from the device if it is present. | |
187 | * The caller must hold the setting semaphore. | |
188 | */ | |
189 | ||
441e92da | 190 | static void __ide_remove_setting(ide_drive_t *drive, char *name) |
7662d046 BZ |
191 | { |
192 | ide_settings_t **p, *setting; | |
193 | ||
194 | p = (ide_settings_t **) &drive->settings; | |
195 | ||
196 | while ((*p) && strcmp((*p)->name, name)) | |
197 | p = &((*p)->next); | |
441e92da PC |
198 | setting = (*p); |
199 | if (setting == NULL) | |
7662d046 BZ |
200 | return; |
201 | ||
202 | (*p) = setting->next; | |
203 | ||
204 | kfree(setting->name); | |
205 | kfree(setting); | |
206 | } | |
207 | ||
208 | /** | |
209 | * auto_remove_settings - remove driver specific settings | |
210 | * @drive: drive | |
211 | * | |
212 | * Automatically remove all the driver specific settings for this | |
213 | * drive. This function may not be called from IRQ context. The | |
f9383c42 | 214 | * caller must hold ide_setting_mtx. |
7662d046 BZ |
215 | */ |
216 | ||
441e92da | 217 | static void auto_remove_settings(ide_drive_t *drive) |
7662d046 BZ |
218 | { |
219 | ide_settings_t *setting; | |
220 | repeat: | |
221 | setting = drive->settings; | |
222 | while (setting) { | |
223 | if (setting->auto_remove) { | |
224 | __ide_remove_setting(drive, setting->name); | |
225 | goto repeat; | |
226 | } | |
227 | setting = setting->next; | |
228 | } | |
229 | } | |
230 | ||
231 | /** | |
232 | * ide_find_setting_by_name - find a drive specific setting | |
233 | * @drive: drive to scan | |
234 | * @name: setting name | |
235 | * | |
236 | * Scan's the device setting table for a matching entry and returns | |
237 | * this or NULL if no entry is found. The caller must hold the | |
238 | * setting semaphore | |
239 | */ | |
240 | ||
241 | static ide_settings_t *ide_find_setting_by_name(ide_drive_t *drive, char *name) | |
242 | { | |
243 | ide_settings_t *setting = drive->settings; | |
244 | ||
245 | while (setting) { | |
246 | if (strcmp(setting->name, name) == 0) | |
247 | break; | |
248 | setting = setting->next; | |
249 | } | |
250 | return setting; | |
251 | } | |
252 | ||
253 | /** | |
254 | * ide_read_setting - read an IDE setting | |
255 | * @drive: drive to read from | |
256 | * @setting: drive setting | |
257 | * | |
258 | * Read a drive setting and return the value. The caller | |
f9383c42 | 259 | * must hold the ide_setting_mtx when making this call. |
7662d046 BZ |
260 | * |
261 | * BUGS: the data return and error are the same return value | |
262 | * so an error -EINVAL and true return of the same value cannot | |
263 | * be told apart | |
264 | */ | |
265 | ||
266 | static int ide_read_setting(ide_drive_t *drive, ide_settings_t *setting) | |
267 | { | |
268 | int val = -EINVAL; | |
269 | unsigned long flags; | |
270 | ||
271 | if ((setting->rw & SETTING_READ)) { | |
272 | spin_lock_irqsave(&ide_lock, flags); | |
441e92da PC |
273 | switch (setting->data_type) { |
274 | case TYPE_BYTE: | |
275 | val = *((u8 *) setting->data); | |
276 | break; | |
277 | case TYPE_SHORT: | |
278 | val = *((u16 *) setting->data); | |
279 | break; | |
280 | case TYPE_INT: | |
281 | val = *((u32 *) setting->data); | |
282 | break; | |
7662d046 BZ |
283 | } |
284 | spin_unlock_irqrestore(&ide_lock, flags); | |
285 | } | |
286 | return val; | |
287 | } | |
288 | ||
289 | /** | |
290 | * ide_write_setting - read an IDE setting | |
291 | * @drive: drive to read from | |
292 | * @setting: drive setting | |
293 | * @val: value | |
294 | * | |
295 | * Write a drive setting if it is possible. The caller | |
f9383c42 | 296 | * must hold the ide_setting_mtx when making this call. |
7662d046 BZ |
297 | * |
298 | * BUGS: the data return and error are the same return value | |
299 | * so an error -EINVAL and true return of the same value cannot | |
300 | * be told apart | |
301 | * | |
302 | * FIXME: This should be changed to enqueue a special request | |
303 | * to the driver to change settings, and then wait on a sema for completion. | |
304 | * The current scheme of polling is kludgy, though safe enough. | |
305 | */ | |
306 | ||
307 | static int ide_write_setting(ide_drive_t *drive, ide_settings_t *setting, int val) | |
308 | { | |
309 | if (!capable(CAP_SYS_ADMIN)) | |
310 | return -EACCES; | |
311 | if (setting->set) | |
312 | return setting->set(drive, val); | |
313 | if (!(setting->rw & SETTING_WRITE)) | |
314 | return -EPERM; | |
315 | if (val < setting->min || val > setting->max) | |
316 | return -EINVAL; | |
317 | if (ide_spin_wait_hwgroup(drive)) | |
318 | return -EBUSY; | |
319 | switch (setting->data_type) { | |
441e92da PC |
320 | case TYPE_BYTE: |
321 | *((u8 *) setting->data) = val; | |
322 | break; | |
323 | case TYPE_SHORT: | |
324 | *((u16 *) setting->data) = val; | |
325 | break; | |
326 | case TYPE_INT: | |
327 | *((u32 *) setting->data) = val; | |
328 | break; | |
7662d046 BZ |
329 | } |
330 | spin_unlock_irq(&ide_lock); | |
331 | return 0; | |
332 | } | |
333 | ||
334 | static int set_xfer_rate (ide_drive_t *drive, int arg) | |
335 | { | |
34f5d5ae | 336 | ide_task_t task; |
7662d046 BZ |
337 | int err; |
338 | ||
3b2a5c71 | 339 | if (arg < XFER_PIO_0 || arg > XFER_UDMA_6) |
7662d046 BZ |
340 | return -EINVAL; |
341 | ||
34f5d5ae | 342 | memset(&task, 0, sizeof(task)); |
aaaade3f | 343 | task.tf.command = ATA_CMD_SET_FEATURES; |
34f5d5ae BZ |
344 | task.tf.feature = SETFEATURES_XFER; |
345 | task.tf.nsect = (u8)arg; | |
346 | task.tf_flags = IDE_TFLAG_OUT_FEATURE | IDE_TFLAG_OUT_NSECT | | |
347 | IDE_TFLAG_IN_NSECT; | |
348 | ||
349 | err = ide_no_data_taskfile(drive, &task); | |
7662d046 | 350 | |
3b2a5c71 | 351 | if (!err) { |
7662d046 BZ |
352 | ide_set_xfer_rate(drive, (u8) arg); |
353 | ide_driveid_update(drive); | |
354 | } | |
355 | return err; | |
356 | } | |
357 | ||
358 | /** | |
359 | * ide_add_generic_settings - generic ide settings | |
360 | * @drive: drive being configured | |
361 | * | |
362 | * Add the generic parts of the system settings to the /proc files. | |
f9383c42 | 363 | * The caller must not be holding the ide_setting_mtx. |
7662d046 BZ |
364 | */ |
365 | ||
366 | void ide_add_generic_settings (ide_drive_t *drive) | |
367 | { | |
368 | /* | |
369 | * drive setting name read/write access data type min max mul_factor div_factor data pointer set function | |
370 | */ | |
263138a0 BZ |
371 | __ide_add_setting(drive, "io_32bit", SETTING_RW, TYPE_BYTE, 0, 1 + (SUPPORT_VLB_SYNC << 1), 1, 1, &drive->io_32bit, set_io_32bit, 0); |
372 | __ide_add_setting(drive, "keepsettings", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, set_ksettings, 0); | |
7662d046 BZ |
373 | __ide_add_setting(drive, "nice1", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL, 0); |
374 | __ide_add_setting(drive, "pio_mode", SETTING_WRITE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode, 0); | |
263138a0 | 375 | __ide_add_setting(drive, "unmaskirq", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->unmask, set_unmaskirq, 0); |
7662d046 BZ |
376 | __ide_add_setting(drive, "using_dma", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->using_dma, set_using_dma, 0); |
377 | __ide_add_setting(drive, "init_speed", SETTING_RW, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL, 0); | |
378 | __ide_add_setting(drive, "current_speed", SETTING_RW, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate, 0); | |
379 | __ide_add_setting(drive, "number", SETTING_RW, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL, 0); | |
380 | } | |
381 | ||
1da177e4 LT |
382 | static void proc_ide_settings_warn(void) |
383 | { | |
441e92da | 384 | static int warned; |
1da177e4 LT |
385 | |
386 | if (warned) | |
387 | return; | |
388 | ||
389 | printk(KERN_WARNING "Warning: /proc/ide/hd?/settings interface is " | |
390 | "obsolete, and will be removed soon!\n"); | |
391 | warned = 1; | |
392 | } | |
393 | ||
394 | static int proc_ide_read_settings | |
395 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
396 | { | |
397 | ide_drive_t *drive = (ide_drive_t *) data; | |
398 | ide_settings_t *setting = (ide_settings_t *) drive->settings; | |
399 | char *out = page; | |
400 | int len, rc, mul_factor, div_factor; | |
401 | ||
402 | proc_ide_settings_warn(); | |
403 | ||
f9383c42 | 404 | mutex_lock(&ide_setting_mtx); |
1da177e4 LT |
405 | out += sprintf(out, "name\t\t\tvalue\t\tmin\t\tmax\t\tmode\n"); |
406 | out += sprintf(out, "----\t\t\t-----\t\t---\t\t---\t\t----\n"); | |
441e92da | 407 | while (setting) { |
1da177e4 LT |
408 | mul_factor = setting->mul_factor; |
409 | div_factor = setting->div_factor; | |
410 | out += sprintf(out, "%-24s", setting->name); | |
441e92da PC |
411 | rc = ide_read_setting(drive, setting); |
412 | if (rc >= 0) | |
1da177e4 LT |
413 | out += sprintf(out, "%-16d", rc * mul_factor / div_factor); |
414 | else | |
415 | out += sprintf(out, "%-16s", "write-only"); | |
416 | out += sprintf(out, "%-16d%-16d", (setting->min * mul_factor + div_factor - 1) / div_factor, setting->max * mul_factor / div_factor); | |
417 | if (setting->rw & SETTING_READ) | |
418 | out += sprintf(out, "r"); | |
419 | if (setting->rw & SETTING_WRITE) | |
420 | out += sprintf(out, "w"); | |
421 | out += sprintf(out, "\n"); | |
422 | setting = setting->next; | |
423 | } | |
424 | len = out - page; | |
f9383c42 | 425 | mutex_unlock(&ide_setting_mtx); |
441e92da | 426 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
427 | } |
428 | ||
429 | #define MAX_LEN 30 | |
430 | ||
431 | static int proc_ide_write_settings(struct file *file, const char __user *buffer, | |
432 | unsigned long count, void *data) | |
433 | { | |
434 | ide_drive_t *drive = (ide_drive_t *) data; | |
435 | char name[MAX_LEN + 1]; | |
436 | int for_real = 0; | |
437 | unsigned long n; | |
438 | ide_settings_t *setting; | |
439 | char *buf, *s; | |
440 | ||
441 | if (!capable(CAP_SYS_ADMIN)) | |
442 | return -EACCES; | |
443 | ||
444 | proc_ide_settings_warn(); | |
445 | ||
446 | if (count >= PAGE_SIZE) | |
447 | return -EINVAL; | |
448 | ||
449 | s = buf = (char *)__get_free_page(GFP_USER); | |
450 | if (!buf) | |
451 | return -ENOMEM; | |
452 | ||
453 | if (copy_from_user(buf, buffer, count)) { | |
454 | free_page((unsigned long)buf); | |
455 | return -EFAULT; | |
456 | } | |
457 | ||
458 | buf[count] = '\0'; | |
459 | ||
460 | /* | |
461 | * Skip over leading whitespace | |
462 | */ | |
463 | while (count && isspace(*s)) { | |
464 | --count; | |
465 | ++s; | |
466 | } | |
467 | /* | |
468 | * Do one full pass to verify all parameters, | |
469 | * then do another to actually write the new settings. | |
470 | */ | |
471 | do { | |
472 | char *p = s; | |
473 | n = count; | |
474 | while (n > 0) { | |
475 | unsigned val; | |
476 | char *q = p; | |
477 | ||
478 | while (n > 0 && *p != ':') { | |
479 | --n; | |
480 | p++; | |
481 | } | |
482 | if (*p != ':') | |
483 | goto parse_error; | |
484 | if (p - q > MAX_LEN) | |
485 | goto parse_error; | |
486 | memcpy(name, q, p - q); | |
487 | name[p - q] = 0; | |
488 | ||
489 | if (n > 0) { | |
490 | --n; | |
491 | p++; | |
492 | } else | |
493 | goto parse_error; | |
494 | ||
495 | val = simple_strtoul(p, &q, 10); | |
496 | n -= q - p; | |
497 | p = q; | |
498 | if (n > 0 && !isspace(*p)) | |
499 | goto parse_error; | |
500 | while (n > 0 && isspace(*p)) { | |
501 | --n; | |
502 | ++p; | |
503 | } | |
504 | ||
f9383c42 | 505 | mutex_lock(&ide_setting_mtx); |
1da177e4 | 506 | setting = ide_find_setting_by_name(drive, name); |
441e92da | 507 | if (!setting) { |
f9383c42 | 508 | mutex_unlock(&ide_setting_mtx); |
1da177e4 LT |
509 | goto parse_error; |
510 | } | |
511 | if (for_real) | |
512 | ide_write_setting(drive, setting, val * setting->div_factor / setting->mul_factor); | |
f9383c42 | 513 | mutex_unlock(&ide_setting_mtx); |
1da177e4 LT |
514 | } |
515 | } while (!for_real++); | |
516 | free_page((unsigned long)buf); | |
517 | return count; | |
518 | parse_error: | |
519 | free_page((unsigned long)buf); | |
520 | printk("proc_ide_write_settings(): parse error\n"); | |
521 | return -EINVAL; | |
522 | } | |
523 | ||
524 | int proc_ide_read_capacity | |
525 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
526 | { | |
441e92da PC |
527 | int len = sprintf(page, "%llu\n", (long long)0x7fffffff); |
528 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
529 | } |
530 | ||
531 | EXPORT_SYMBOL_GPL(proc_ide_read_capacity); | |
532 | ||
533 | int proc_ide_read_geometry | |
534 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
535 | { | |
536 | ide_drive_t *drive = (ide_drive_t *) data; | |
537 | char *out = page; | |
538 | int len; | |
539 | ||
441e92da | 540 | out += sprintf(out, "physical %d/%d/%d\n", |
1da177e4 | 541 | drive->cyl, drive->head, drive->sect); |
441e92da | 542 | out += sprintf(out, "logical %d/%d/%d\n", |
1da177e4 LT |
543 | drive->bios_cyl, drive->bios_head, drive->bios_sect); |
544 | ||
545 | len = out - page; | |
441e92da | 546 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
547 | } |
548 | ||
549 | EXPORT_SYMBOL(proc_ide_read_geometry); | |
550 | ||
551 | static int proc_ide_read_dmodel | |
552 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
553 | { | |
554 | ide_drive_t *drive = (ide_drive_t *) data; | |
4dde4492 | 555 | char *m = (char *)&drive->id[ATA_ID_PROD]; |
1da177e4 LT |
556 | int len; |
557 | ||
4dde4492 | 558 | len = sprintf(page, "%.40s\n", m[0] ? m : "(none)"); |
441e92da | 559 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
560 | } |
561 | ||
562 | static int proc_ide_read_driver | |
563 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
564 | { | |
565 | ide_drive_t *drive = (ide_drive_t *) data; | |
8604affd BZ |
566 | struct device *dev = &drive->gendev; |
567 | ide_driver_t *ide_drv; | |
1da177e4 LT |
568 | int len; |
569 | ||
8604affd BZ |
570 | if (dev->driver) { |
571 | ide_drv = container_of(dev->driver, ide_driver_t, gen_driver); | |
1da177e4 | 572 | len = sprintf(page, "%s version %s\n", |
8604affd | 573 | dev->driver->name, ide_drv->version); |
1da177e4 LT |
574 | } else |
575 | len = sprintf(page, "ide-default version 0.9.newide\n"); | |
441e92da | 576 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
577 | } |
578 | ||
8604affd BZ |
579 | static int ide_replace_subdriver(ide_drive_t *drive, const char *driver) |
580 | { | |
581 | struct device *dev = &drive->gendev; | |
582 | int ret = 1; | |
349ae23f | 583 | int err; |
8604affd | 584 | |
8604affd BZ |
585 | device_release_driver(dev); |
586 | /* FIXME: device can still be in use by previous driver */ | |
587 | strlcpy(drive->driver_req, driver, sizeof(drive->driver_req)); | |
349ae23f RD |
588 | err = device_attach(dev); |
589 | if (err < 0) | |
590 | printk(KERN_WARNING "IDE: %s: device_attach error: %d\n", | |
eb63963a | 591 | __func__, err); |
8604affd | 592 | drive->driver_req[0] = 0; |
349ae23f RD |
593 | if (dev->driver == NULL) { |
594 | err = device_attach(dev); | |
595 | if (err < 0) | |
596 | printk(KERN_WARNING | |
597 | "IDE: %s: device_attach(2) error: %d\n", | |
eb63963a | 598 | __func__, err); |
349ae23f | 599 | } |
8604affd BZ |
600 | if (dev->driver && !strcmp(dev->driver->name, driver)) |
601 | ret = 0; | |
8604affd BZ |
602 | |
603 | return ret; | |
604 | } | |
605 | ||
1da177e4 LT |
606 | static int proc_ide_write_driver |
607 | (struct file *file, const char __user *buffer, unsigned long count, void *data) | |
608 | { | |
609 | ide_drive_t *drive = (ide_drive_t *) data; | |
610 | char name[32]; | |
611 | ||
612 | if (!capable(CAP_SYS_ADMIN)) | |
613 | return -EACCES; | |
614 | if (count > 31) | |
615 | count = 31; | |
616 | if (copy_from_user(name, buffer, count)) | |
617 | return -EFAULT; | |
618 | name[count] = '\0'; | |
619 | if (ide_replace_subdriver(drive, name)) | |
620 | return -EINVAL; | |
621 | return count; | |
622 | } | |
623 | ||
624 | static int proc_ide_read_media | |
625 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
626 | { | |
627 | ide_drive_t *drive = (ide_drive_t *) data; | |
628 | const char *media; | |
629 | int len; | |
630 | ||
631 | switch (drive->media) { | |
441e92da PC |
632 | case ide_disk: media = "disk\n"; break; |
633 | case ide_cdrom: media = "cdrom\n"; break; | |
634 | case ide_tape: media = "tape\n"; break; | |
635 | case ide_floppy: media = "floppy\n"; break; | |
636 | case ide_optical: media = "optical\n"; break; | |
637 | default: media = "UNKNOWN\n"; break; | |
1da177e4 | 638 | } |
441e92da | 639 | strcpy(page, media); |
1da177e4 | 640 | len = strlen(media); |
441e92da | 641 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
642 | } |
643 | ||
644 | static ide_proc_entry_t generic_drive_entries[] = { | |
441e92da PC |
645 | { "driver", S_IFREG|S_IRUGO, proc_ide_read_driver, |
646 | proc_ide_write_driver }, | |
647 | { "identify", S_IFREG|S_IRUSR, proc_ide_read_identify, NULL }, | |
648 | { "media", S_IFREG|S_IRUGO, proc_ide_read_media, NULL }, | |
649 | { "model", S_IFREG|S_IRUGO, proc_ide_read_dmodel, NULL }, | |
650 | { "settings", S_IFREG|S_IRUSR|S_IWUSR, proc_ide_read_settings, | |
651 | proc_ide_write_settings }, | |
1da177e4 LT |
652 | { NULL, 0, NULL, NULL } |
653 | }; | |
654 | ||
7662d046 | 655 | static void ide_add_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p, void *data) |
1da177e4 LT |
656 | { |
657 | struct proc_dir_entry *ent; | |
658 | ||
659 | if (!dir || !p) | |
660 | return; | |
661 | while (p->name != NULL) { | |
662 | ent = create_proc_entry(p->name, p->mode, dir); | |
663 | if (!ent) return; | |
1da177e4 LT |
664 | ent->data = data; |
665 | ent->read_proc = p->read_proc; | |
666 | ent->write_proc = p->write_proc; | |
667 | p++; | |
668 | } | |
669 | } | |
670 | ||
7662d046 | 671 | static void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p) |
1da177e4 LT |
672 | { |
673 | if (!dir || !p) | |
674 | return; | |
675 | while (p->name != NULL) { | |
676 | remove_proc_entry(p->name, dir); | |
677 | p++; | |
678 | } | |
679 | } | |
680 | ||
7662d046 BZ |
681 | void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) |
682 | { | |
683 | ide_add_proc_entries(drive->proc, driver->proc, drive); | |
684 | } | |
685 | ||
686 | EXPORT_SYMBOL(ide_proc_register_driver); | |
687 | ||
688 | /** | |
689 | * ide_proc_unregister_driver - remove driver specific data | |
690 | * @drive: drive | |
691 | * @driver: driver | |
692 | * | |
693 | * Clean up the driver specific /proc files and IDE settings | |
694 | * for a given drive. | |
695 | * | |
f9383c42 | 696 | * Takes ide_setting_mtx and ide_lock. |
7662d046 BZ |
697 | * Caller must hold none of the locks. |
698 | */ | |
699 | ||
700 | void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) | |
701 | { | |
702 | unsigned long flags; | |
703 | ||
704 | ide_remove_proc_entries(drive->proc, driver->proc); | |
705 | ||
f9383c42 | 706 | mutex_lock(&ide_setting_mtx); |
7662d046 BZ |
707 | spin_lock_irqsave(&ide_lock, flags); |
708 | /* | |
f9383c42 | 709 | * ide_setting_mtx protects the settings list |
7662d046 BZ |
710 | * ide_lock protects the use of settings |
711 | * | |
712 | * so we need to hold both, ide_settings_sem because we want to | |
713 | * modify the settings list, and ide_lock because we cannot take | |
714 | * a setting out that is being used. | |
715 | * | |
716 | * OTOH both ide_{read,write}_setting are only ever used under | |
f9383c42 | 717 | * ide_setting_mtx. |
7662d046 BZ |
718 | */ |
719 | auto_remove_settings(drive); | |
720 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 721 | mutex_unlock(&ide_setting_mtx); |
7662d046 | 722 | } |
7662d046 BZ |
723 | EXPORT_SYMBOL(ide_proc_unregister_driver); |
724 | ||
d9270a3f | 725 | void ide_proc_port_register_devices(ide_hwif_t *hwif) |
1da177e4 LT |
726 | { |
727 | int d; | |
728 | struct proc_dir_entry *ent; | |
729 | struct proc_dir_entry *parent = hwif->proc; | |
730 | char name[64]; | |
731 | ||
732 | for (d = 0; d < MAX_DRIVES; d++) { | |
733 | ide_drive_t *drive = &hwif->drives[d]; | |
734 | ||
735 | if (!drive->present) | |
736 | continue; | |
737 | if (drive->proc) | |
738 | continue; | |
739 | ||
740 | drive->proc = proc_mkdir(drive->name, parent); | |
741 | if (drive->proc) | |
742 | ide_add_proc_entries(drive->proc, generic_drive_entries, drive); | |
441e92da | 743 | sprintf(name, "ide%d/%s", (drive->name[2]-'a')/2, drive->name); |
1da177e4 LT |
744 | ent = proc_symlink(drive->name, proc_ide_root, name); |
745 | if (!ent) return; | |
746 | } | |
747 | } | |
748 | ||
5b0c4b30 | 749 | void ide_proc_unregister_device(ide_drive_t *drive) |
1da177e4 LT |
750 | { |
751 | if (drive->proc) { | |
752 | ide_remove_proc_entries(drive->proc, generic_drive_entries); | |
753 | remove_proc_entry(drive->name, proc_ide_root); | |
5b0c4b30 | 754 | remove_proc_entry(drive->name, drive->hwif->proc); |
1da177e4 LT |
755 | drive->proc = NULL; |
756 | } | |
757 | } | |
758 | ||
1da177e4 LT |
759 | static ide_proc_entry_t hwif_entries[] = { |
760 | { "channel", S_IFREG|S_IRUGO, proc_ide_read_channel, NULL }, | |
761 | { "mate", S_IFREG|S_IRUGO, proc_ide_read_mate, NULL }, | |
762 | { "model", S_IFREG|S_IRUGO, proc_ide_read_imodel, NULL }, | |
763 | { NULL, 0, NULL, NULL } | |
764 | }; | |
765 | ||
5cbf79cd | 766 | void ide_proc_register_port(ide_hwif_t *hwif) |
1da177e4 | 767 | { |
5cbf79cd BZ |
768 | if (!hwif->proc) { |
769 | hwif->proc = proc_mkdir(hwif->name, proc_ide_root); | |
1da177e4 | 770 | |
5cbf79cd BZ |
771 | if (!hwif->proc) |
772 | return; | |
773 | ||
774 | ide_add_proc_entries(hwif->proc, hwif_entries, hwif); | |
1da177e4 LT |
775 | } |
776 | } | |
777 | ||
5cbf79cd | 778 | void ide_proc_unregister_port(ide_hwif_t *hwif) |
1da177e4 LT |
779 | { |
780 | if (hwif->proc) { | |
1da177e4 LT |
781 | ide_remove_proc_entries(hwif->proc, hwif_entries); |
782 | remove_proc_entry(hwif->name, proc_ide_root); | |
783 | hwif->proc = NULL; | |
784 | } | |
785 | } | |
786 | ||
8604affd BZ |
787 | static int proc_print_driver(struct device_driver *drv, void *data) |
788 | { | |
789 | ide_driver_t *ide_drv = container_of(drv, ide_driver_t, gen_driver); | |
790 | struct seq_file *s = data; | |
791 | ||
792 | seq_printf(s, "%s version %s\n", drv->name, ide_drv->version); | |
793 | ||
794 | return 0; | |
795 | } | |
796 | ||
797 | static int ide_drivers_show(struct seq_file *s, void *p) | |
798 | { | |
349ae23f RD |
799 | int err; |
800 | ||
801 | err = bus_for_each_drv(&ide_bus_type, NULL, s, proc_print_driver); | |
802 | if (err < 0) | |
803 | printk(KERN_WARNING "IDE: %s: bus_for_each_drv error: %d\n", | |
eb63963a | 804 | __func__, err); |
8604affd BZ |
805 | return 0; |
806 | } | |
807 | ||
1da177e4 LT |
808 | static int ide_drivers_open(struct inode *inode, struct file *file) |
809 | { | |
8604affd | 810 | return single_open(file, &ide_drivers_show, NULL); |
1da177e4 | 811 | } |
8604affd | 812 | |
2b8693c0 | 813 | static const struct file_operations ide_drivers_operations = { |
c7705f34 | 814 | .owner = THIS_MODULE, |
1da177e4 LT |
815 | .open = ide_drivers_open, |
816 | .read = seq_read, | |
817 | .llseek = seq_lseek, | |
8604affd | 818 | .release = single_release, |
1da177e4 LT |
819 | }; |
820 | ||
821 | void proc_ide_create(void) | |
822 | { | |
5cbf79cd BZ |
823 | proc_ide_root = proc_mkdir("ide", NULL); |
824 | ||
1da177e4 LT |
825 | if (!proc_ide_root) |
826 | return; | |
827 | ||
c7705f34 | 828 | proc_create("drivers", 0, proc_ide_root, &ide_drivers_operations); |
1da177e4 LT |
829 | } |
830 | ||
831 | void proc_ide_destroy(void) | |
832 | { | |
643bdc6f | 833 | remove_proc_entry("drivers", proc_ide_root); |
1da177e4 LT |
834 | remove_proc_entry("ide", NULL); |
835 | } |