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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 | |
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 | ||
1da177e4 LT |
25 | #include <linux/module.h> |
26 | ||
27 | #include <asm/uaccess.h> | |
28 | #include <linux/errno.h> | |
1da177e4 LT |
29 | #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 | ||
5cbf79cd BZ |
40 | static struct proc_dir_entry *proc_ide_root; |
41 | ||
1da177e4 LT |
42 | static 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 | ||
49 | /* | |
50 | * Neither ide_unknown nor ide_forced should be set at this point. | |
51 | */ | |
52 | switch (hwif->chipset) { | |
53 | case ide_generic: name = "generic"; break; | |
54 | case ide_pci: name = "pci"; break; | |
55 | case ide_cmd640: name = "cmd640"; break; | |
56 | case ide_dtc2278: name = "dtc2278"; break; | |
57 | case ide_ali14xx: name = "ali14xx"; break; | |
58 | case ide_qd65xx: name = "qd65xx"; break; | |
59 | case ide_umc8672: name = "umc8672"; break; | |
60 | case ide_ht6560b: name = "ht6560b"; break; | |
61 | case ide_rz1000: name = "rz1000"; break; | |
62 | case ide_trm290: name = "trm290"; break; | |
63 | case ide_cmd646: name = "cmd646"; break; | |
64 | case ide_cy82c693: name = "cy82c693"; break; | |
65 | case ide_4drives: name = "4drives"; break; | |
66 | case ide_pmac: name = "mac-io"; break; | |
26a940e2 | 67 | case ide_au1xxx: name = "au1xxx"; break; |
39c98c42 MK |
68 | case ide_etrax100: name = "etrax100"; break; |
69 | case ide_acorn: name = "acorn"; break; | |
1da177e4 LT |
70 | default: name = "(unknown)"; break; |
71 | } | |
72 | len = sprintf(page, "%s\n", name); | |
73 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
74 | } | |
75 | ||
76 | static int proc_ide_read_mate | |
77 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
78 | { | |
79 | ide_hwif_t *hwif = (ide_hwif_t *) data; | |
80 | int len; | |
81 | ||
82 | if (hwif && hwif->mate && hwif->mate->present) | |
83 | len = sprintf(page, "%s\n", hwif->mate->name); | |
84 | else | |
85 | len = sprintf(page, "(none)\n"); | |
86 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
87 | } | |
88 | ||
89 | static int proc_ide_read_channel | |
90 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
91 | { | |
92 | ide_hwif_t *hwif = (ide_hwif_t *) data; | |
93 | int len; | |
94 | ||
95 | page[0] = hwif->channel ? '1' : '0'; | |
96 | page[1] = '\n'; | |
97 | len = 2; | |
98 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
99 | } | |
100 | ||
101 | static int proc_ide_read_identify | |
102 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
103 | { | |
104 | ide_drive_t *drive = (ide_drive_t *)data; | |
105 | int len = 0, i = 0; | |
106 | int err = 0; | |
107 | ||
108 | len = sprintf(page, "\n"); | |
109 | ||
110 | if (drive) { | |
111 | unsigned short *val = (unsigned short *) page; | |
112 | ||
113 | err = taskfile_lib_get_identify(drive, page); | |
114 | if (!err) { | |
115 | char *out = ((char *)page) + (SECTOR_WORDS * 4); | |
116 | page = out; | |
117 | do { | |
118 | out += sprintf(out, "%04x%c", | |
119 | le16_to_cpu(*val), (++i & 7) ? ' ' : '\n'); | |
120 | val += 1; | |
121 | } while (i < (SECTOR_WORDS * 2)); | |
122 | len = out - page; | |
123 | } | |
124 | } | |
125 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
126 | } | |
127 | ||
7662d046 BZ |
128 | /** |
129 | * __ide_add_setting - add an ide setting option | |
130 | * @drive: drive to use | |
131 | * @name: setting name | |
132 | * @rw: true if the function is read write | |
133 | * @data_type: type of data | |
134 | * @min: range minimum | |
135 | * @max: range maximum | |
136 | * @mul_factor: multiplication scale | |
137 | * @div_factor: divison scale | |
138 | * @data: private data field | |
139 | * @set: setting | |
140 | * @auto_remove: setting auto removal flag | |
141 | * | |
142 | * Removes the setting named from the device if it is present. | |
143 | * The function takes the settings_lock to protect against | |
144 | * parallel changes. This function must not be called from IRQ | |
145 | * context. Returns 0 on success or -1 on failure. | |
146 | * | |
147 | * BUGS: This code is seriously over-engineered. There is also | |
148 | * magic about how the driver specific features are setup. If | |
149 | * a driver is attached we assume the driver settings are auto | |
150 | * remove. | |
151 | */ | |
152 | ||
153 | 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) | |
154 | { | |
155 | ide_settings_t **p = (ide_settings_t **) &drive->settings, *setting = NULL; | |
156 | ||
f9383c42 | 157 | mutex_lock(&ide_setting_mtx); |
7662d046 BZ |
158 | while ((*p) && strcmp((*p)->name, name) < 0) |
159 | p = &((*p)->next); | |
160 | if ((setting = kzalloc(sizeof(*setting), GFP_KERNEL)) == NULL) | |
161 | goto abort; | |
162 | if ((setting->name = kmalloc(strlen(name) + 1, GFP_KERNEL)) == NULL) | |
163 | goto abort; | |
164 | strcpy(setting->name, name); | |
165 | setting->rw = rw; | |
166 | setting->data_type = data_type; | |
167 | setting->min = min; | |
168 | setting->max = max; | |
169 | setting->mul_factor = mul_factor; | |
170 | setting->div_factor = div_factor; | |
171 | setting->data = data; | |
172 | setting->set = set; | |
173 | ||
174 | setting->next = *p; | |
175 | if (auto_remove) | |
176 | setting->auto_remove = 1; | |
177 | *p = setting; | |
f9383c42 | 178 | mutex_unlock(&ide_setting_mtx); |
7662d046 BZ |
179 | return 0; |
180 | abort: | |
f9383c42 | 181 | mutex_unlock(&ide_setting_mtx); |
7662d046 BZ |
182 | kfree(setting); |
183 | return -1; | |
184 | } | |
185 | ||
186 | 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) | |
187 | { | |
188 | return __ide_add_setting(drive, name, rw, data_type, min, max, mul_factor, div_factor, data, set, 1); | |
189 | } | |
190 | ||
191 | EXPORT_SYMBOL(ide_add_setting); | |
192 | ||
193 | /** | |
194 | * __ide_remove_setting - remove an ide setting option | |
195 | * @drive: drive to use | |
196 | * @name: setting name | |
197 | * | |
198 | * Removes the setting named from the device if it is present. | |
199 | * The caller must hold the setting semaphore. | |
200 | */ | |
201 | ||
202 | static void __ide_remove_setting (ide_drive_t *drive, char *name) | |
203 | { | |
204 | ide_settings_t **p, *setting; | |
205 | ||
206 | p = (ide_settings_t **) &drive->settings; | |
207 | ||
208 | while ((*p) && strcmp((*p)->name, name)) | |
209 | p = &((*p)->next); | |
210 | if ((setting = (*p)) == NULL) | |
211 | return; | |
212 | ||
213 | (*p) = setting->next; | |
214 | ||
215 | kfree(setting->name); | |
216 | kfree(setting); | |
217 | } | |
218 | ||
219 | /** | |
220 | * auto_remove_settings - remove driver specific settings | |
221 | * @drive: drive | |
222 | * | |
223 | * Automatically remove all the driver specific settings for this | |
224 | * drive. This function may not be called from IRQ context. The | |
f9383c42 | 225 | * caller must hold ide_setting_mtx. |
7662d046 BZ |
226 | */ |
227 | ||
228 | static void auto_remove_settings (ide_drive_t *drive) | |
229 | { | |
230 | ide_settings_t *setting; | |
231 | repeat: | |
232 | setting = drive->settings; | |
233 | while (setting) { | |
234 | if (setting->auto_remove) { | |
235 | __ide_remove_setting(drive, setting->name); | |
236 | goto repeat; | |
237 | } | |
238 | setting = setting->next; | |
239 | } | |
240 | } | |
241 | ||
242 | /** | |
243 | * ide_find_setting_by_name - find a drive specific setting | |
244 | * @drive: drive to scan | |
245 | * @name: setting name | |
246 | * | |
247 | * Scan's the device setting table for a matching entry and returns | |
248 | * this or NULL if no entry is found. The caller must hold the | |
249 | * setting semaphore | |
250 | */ | |
251 | ||
252 | static ide_settings_t *ide_find_setting_by_name(ide_drive_t *drive, char *name) | |
253 | { | |
254 | ide_settings_t *setting = drive->settings; | |
255 | ||
256 | while (setting) { | |
257 | if (strcmp(setting->name, name) == 0) | |
258 | break; | |
259 | setting = setting->next; | |
260 | } | |
261 | return setting; | |
262 | } | |
263 | ||
264 | /** | |
265 | * ide_read_setting - read an IDE setting | |
266 | * @drive: drive to read from | |
267 | * @setting: drive setting | |
268 | * | |
269 | * Read a drive setting and return the value. The caller | |
f9383c42 | 270 | * must hold the ide_setting_mtx when making this call. |
7662d046 BZ |
271 | * |
272 | * BUGS: the data return and error are the same return value | |
273 | * so an error -EINVAL and true return of the same value cannot | |
274 | * be told apart | |
275 | */ | |
276 | ||
277 | static int ide_read_setting(ide_drive_t *drive, ide_settings_t *setting) | |
278 | { | |
279 | int val = -EINVAL; | |
280 | unsigned long flags; | |
281 | ||
282 | if ((setting->rw & SETTING_READ)) { | |
283 | spin_lock_irqsave(&ide_lock, flags); | |
284 | switch(setting->data_type) { | |
285 | case TYPE_BYTE: | |
286 | val = *((u8 *) setting->data); | |
287 | break; | |
288 | case TYPE_SHORT: | |
289 | val = *((u16 *) setting->data); | |
290 | break; | |
291 | case TYPE_INT: | |
292 | val = *((u32 *) setting->data); | |
293 | break; | |
294 | } | |
295 | spin_unlock_irqrestore(&ide_lock, flags); | |
296 | } | |
297 | return val; | |
298 | } | |
299 | ||
300 | /** | |
301 | * ide_write_setting - read an IDE setting | |
302 | * @drive: drive to read from | |
303 | * @setting: drive setting | |
304 | * @val: value | |
305 | * | |
306 | * Write a drive setting if it is possible. The caller | |
f9383c42 | 307 | * must hold the ide_setting_mtx when making this call. |
7662d046 BZ |
308 | * |
309 | * BUGS: the data return and error are the same return value | |
310 | * so an error -EINVAL and true return of the same value cannot | |
311 | * be told apart | |
312 | * | |
313 | * FIXME: This should be changed to enqueue a special request | |
314 | * to the driver to change settings, and then wait on a sema for completion. | |
315 | * The current scheme of polling is kludgy, though safe enough. | |
316 | */ | |
317 | ||
318 | static int ide_write_setting(ide_drive_t *drive, ide_settings_t *setting, int val) | |
319 | { | |
320 | if (!capable(CAP_SYS_ADMIN)) | |
321 | return -EACCES; | |
322 | if (setting->set) | |
323 | return setting->set(drive, val); | |
324 | if (!(setting->rw & SETTING_WRITE)) | |
325 | return -EPERM; | |
326 | if (val < setting->min || val > setting->max) | |
327 | return -EINVAL; | |
328 | if (ide_spin_wait_hwgroup(drive)) | |
329 | return -EBUSY; | |
330 | switch (setting->data_type) { | |
331 | case TYPE_BYTE: | |
332 | *((u8 *) setting->data) = val; | |
333 | break; | |
334 | case TYPE_SHORT: | |
335 | *((u16 *) setting->data) = val; | |
336 | break; | |
337 | case TYPE_INT: | |
338 | *((u32 *) setting->data) = val; | |
339 | break; | |
340 | } | |
341 | spin_unlock_irq(&ide_lock); | |
342 | return 0; | |
343 | } | |
344 | ||
345 | static int set_xfer_rate (ide_drive_t *drive, int arg) | |
346 | { | |
34f5d5ae | 347 | ide_task_t task; |
7662d046 BZ |
348 | int err; |
349 | ||
350 | if (arg < 0 || arg > 70) | |
351 | return -EINVAL; | |
352 | ||
34f5d5ae BZ |
353 | memset(&task, 0, sizeof(task)); |
354 | task.tf.command = WIN_SETFEATURES; | |
355 | task.tf.feature = SETFEATURES_XFER; | |
356 | task.tf.nsect = (u8)arg; | |
357 | task.tf_flags = IDE_TFLAG_OUT_FEATURE | IDE_TFLAG_OUT_NSECT | | |
358 | IDE_TFLAG_IN_NSECT; | |
359 | ||
360 | err = ide_no_data_taskfile(drive, &task); | |
7662d046 BZ |
361 | |
362 | if (!err && arg) { | |
363 | ide_set_xfer_rate(drive, (u8) arg); | |
364 | ide_driveid_update(drive); | |
365 | } | |
366 | return err; | |
367 | } | |
368 | ||
369 | /** | |
370 | * ide_add_generic_settings - generic ide settings | |
371 | * @drive: drive being configured | |
372 | * | |
373 | * Add the generic parts of the system settings to the /proc files. | |
f9383c42 | 374 | * The caller must not be holding the ide_setting_mtx. |
7662d046 BZ |
375 | */ |
376 | ||
377 | void ide_add_generic_settings (ide_drive_t *drive) | |
378 | { | |
379 | /* | |
380 | * drive setting name read/write access data type min max mul_factor div_factor data pointer set function | |
381 | */ | |
382 | __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); | |
383 | __ide_add_setting(drive, "keepsettings", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->keep_settings, NULL, 0); | |
384 | __ide_add_setting(drive, "nice1", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->nice1, NULL, 0); | |
385 | __ide_add_setting(drive, "pio_mode", SETTING_WRITE, TYPE_BYTE, 0, 255, 1, 1, NULL, set_pio_mode, 0); | |
386 | __ide_add_setting(drive, "unmaskirq", drive->no_unmask ? SETTING_READ : SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->unmask, NULL, 0); | |
387 | __ide_add_setting(drive, "using_dma", SETTING_RW, TYPE_BYTE, 0, 1, 1, 1, &drive->using_dma, set_using_dma, 0); | |
388 | __ide_add_setting(drive, "init_speed", SETTING_RW, TYPE_BYTE, 0, 70, 1, 1, &drive->init_speed, NULL, 0); | |
389 | __ide_add_setting(drive, "current_speed", SETTING_RW, TYPE_BYTE, 0, 70, 1, 1, &drive->current_speed, set_xfer_rate, 0); | |
390 | __ide_add_setting(drive, "number", SETTING_RW, TYPE_BYTE, 0, 3, 1, 1, &drive->dn, NULL, 0); | |
391 | } | |
392 | ||
1da177e4 LT |
393 | static void proc_ide_settings_warn(void) |
394 | { | |
395 | static int warned = 0; | |
396 | ||
397 | if (warned) | |
398 | return; | |
399 | ||
400 | printk(KERN_WARNING "Warning: /proc/ide/hd?/settings interface is " | |
401 | "obsolete, and will be removed soon!\n"); | |
402 | warned = 1; | |
403 | } | |
404 | ||
405 | static int proc_ide_read_settings | |
406 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
407 | { | |
408 | ide_drive_t *drive = (ide_drive_t *) data; | |
409 | ide_settings_t *setting = (ide_settings_t *) drive->settings; | |
410 | char *out = page; | |
411 | int len, rc, mul_factor, div_factor; | |
412 | ||
413 | proc_ide_settings_warn(); | |
414 | ||
f9383c42 | 415 | mutex_lock(&ide_setting_mtx); |
1da177e4 LT |
416 | out += sprintf(out, "name\t\t\tvalue\t\tmin\t\tmax\t\tmode\n"); |
417 | out += sprintf(out, "----\t\t\t-----\t\t---\t\t---\t\t----\n"); | |
418 | while(setting) { | |
419 | mul_factor = setting->mul_factor; | |
420 | div_factor = setting->div_factor; | |
421 | out += sprintf(out, "%-24s", setting->name); | |
422 | if ((rc = ide_read_setting(drive, setting)) >= 0) | |
423 | 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; | |
f9383c42 | 435 | mutex_unlock(&ide_setting_mtx); |
1da177e4 LT |
436 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); |
437 | } | |
438 | ||
439 | #define MAX_LEN 30 | |
440 | ||
441 | static 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 | ||
f9383c42 | 515 | mutex_lock(&ide_setting_mtx); |
1da177e4 LT |
516 | setting = ide_find_setting_by_name(drive, name); |
517 | if (!setting) | |
518 | { | |
f9383c42 | 519 | mutex_unlock(&ide_setting_mtx); |
1da177e4 LT |
520 | goto parse_error; |
521 | } | |
522 | if (for_real) | |
523 | ide_write_setting(drive, setting, val * setting->div_factor / setting->mul_factor); | |
f9383c42 | 524 | mutex_unlock(&ide_setting_mtx); |
1da177e4 LT |
525 | } |
526 | } while (!for_real++); | |
527 | free_page((unsigned long)buf); | |
528 | return count; | |
529 | parse_error: | |
530 | free_page((unsigned long)buf); | |
531 | printk("proc_ide_write_settings(): parse error\n"); | |
532 | return -EINVAL; | |
533 | } | |
534 | ||
535 | int proc_ide_read_capacity | |
536 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
537 | { | |
538 | int len = sprintf(page,"%llu\n", (long long)0x7fffffff); | |
539 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
540 | } | |
541 | ||
542 | EXPORT_SYMBOL_GPL(proc_ide_read_capacity); | |
543 | ||
544 | int proc_ide_read_geometry | |
545 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
546 | { | |
547 | ide_drive_t *drive = (ide_drive_t *) data; | |
548 | char *out = page; | |
549 | int len; | |
550 | ||
551 | out += sprintf(out,"physical %d/%d/%d\n", | |
552 | drive->cyl, drive->head, drive->sect); | |
553 | out += sprintf(out,"logical %d/%d/%d\n", | |
554 | drive->bios_cyl, drive->bios_head, drive->bios_sect); | |
555 | ||
556 | len = out - page; | |
557 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
558 | } | |
559 | ||
560 | EXPORT_SYMBOL(proc_ide_read_geometry); | |
561 | ||
562 | static int proc_ide_read_dmodel | |
563 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
564 | { | |
565 | ide_drive_t *drive = (ide_drive_t *) data; | |
566 | struct hd_driveid *id = drive->id; | |
567 | int len; | |
568 | ||
569 | len = sprintf(page, "%.40s\n", | |
570 | (id && id->model[0]) ? (char *)id->model : "(none)"); | |
571 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
572 | } | |
573 | ||
574 | static int proc_ide_read_driver | |
575 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
576 | { | |
577 | ide_drive_t *drive = (ide_drive_t *) data; | |
8604affd BZ |
578 | struct device *dev = &drive->gendev; |
579 | ide_driver_t *ide_drv; | |
1da177e4 LT |
580 | int len; |
581 | ||
8604affd BZ |
582 | if (dev->driver) { |
583 | ide_drv = container_of(dev->driver, ide_driver_t, gen_driver); | |
1da177e4 | 584 | len = sprintf(page, "%s version %s\n", |
8604affd | 585 | dev->driver->name, ide_drv->version); |
1da177e4 LT |
586 | } else |
587 | len = sprintf(page, "ide-default version 0.9.newide\n"); | |
588 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
589 | } | |
590 | ||
8604affd BZ |
591 | static int ide_replace_subdriver(ide_drive_t *drive, const char *driver) |
592 | { | |
593 | struct device *dev = &drive->gendev; | |
594 | int ret = 1; | |
349ae23f | 595 | int err; |
8604affd | 596 | |
8604affd BZ |
597 | device_release_driver(dev); |
598 | /* FIXME: device can still be in use by previous driver */ | |
599 | strlcpy(drive->driver_req, driver, sizeof(drive->driver_req)); | |
349ae23f RD |
600 | err = device_attach(dev); |
601 | if (err < 0) | |
602 | printk(KERN_WARNING "IDE: %s: device_attach error: %d\n", | |
603 | __FUNCTION__, err); | |
8604affd | 604 | drive->driver_req[0] = 0; |
349ae23f RD |
605 | if (dev->driver == NULL) { |
606 | err = device_attach(dev); | |
607 | if (err < 0) | |
608 | printk(KERN_WARNING | |
609 | "IDE: %s: device_attach(2) error: %d\n", | |
610 | __FUNCTION__, err); | |
611 | } | |
8604affd BZ |
612 | if (dev->driver && !strcmp(dev->driver->name, driver)) |
613 | ret = 0; | |
8604affd BZ |
614 | |
615 | return ret; | |
616 | } | |
617 | ||
1da177e4 LT |
618 | static int proc_ide_write_driver |
619 | (struct file *file, const char __user *buffer, unsigned long count, void *data) | |
620 | { | |
621 | ide_drive_t *drive = (ide_drive_t *) data; | |
622 | char name[32]; | |
623 | ||
624 | if (!capable(CAP_SYS_ADMIN)) | |
625 | return -EACCES; | |
626 | if (count > 31) | |
627 | count = 31; | |
628 | if (copy_from_user(name, buffer, count)) | |
629 | return -EFAULT; | |
630 | name[count] = '\0'; | |
631 | if (ide_replace_subdriver(drive, name)) | |
632 | return -EINVAL; | |
633 | return count; | |
634 | } | |
635 | ||
636 | static int proc_ide_read_media | |
637 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
638 | { | |
639 | ide_drive_t *drive = (ide_drive_t *) data; | |
640 | const char *media; | |
641 | int len; | |
642 | ||
643 | switch (drive->media) { | |
644 | case ide_disk: media = "disk\n"; | |
645 | break; | |
646 | case ide_cdrom: media = "cdrom\n"; | |
647 | break; | |
648 | case ide_tape: media = "tape\n"; | |
649 | break; | |
650 | case ide_floppy:media = "floppy\n"; | |
651 | break; | |
4495c9e5 AD |
652 | case ide_optical:media = "optical\n"; |
653 | break; | |
1da177e4 LT |
654 | default: media = "UNKNOWN\n"; |
655 | break; | |
656 | } | |
657 | strcpy(page,media); | |
658 | len = strlen(media); | |
659 | PROC_IDE_READ_RETURN(page,start,off,count,eof,len); | |
660 | } | |
661 | ||
662 | static ide_proc_entry_t generic_drive_entries[] = { | |
663 | { "driver", S_IFREG|S_IRUGO, proc_ide_read_driver, proc_ide_write_driver }, | |
664 | { "identify", S_IFREG|S_IRUSR, proc_ide_read_identify, NULL }, | |
665 | { "media", S_IFREG|S_IRUGO, proc_ide_read_media, NULL }, | |
666 | { "model", S_IFREG|S_IRUGO, proc_ide_read_dmodel, NULL }, | |
667 | { "settings", S_IFREG|S_IRUSR|S_IWUSR,proc_ide_read_settings, proc_ide_write_settings }, | |
668 | { NULL, 0, NULL, NULL } | |
669 | }; | |
670 | ||
7662d046 | 671 | static void ide_add_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p, void *data) |
1da177e4 LT |
672 | { |
673 | struct proc_dir_entry *ent; | |
674 | ||
675 | if (!dir || !p) | |
676 | return; | |
677 | while (p->name != NULL) { | |
678 | ent = create_proc_entry(p->name, p->mode, dir); | |
679 | if (!ent) return; | |
1da177e4 LT |
680 | ent->data = data; |
681 | ent->read_proc = p->read_proc; | |
682 | ent->write_proc = p->write_proc; | |
683 | p++; | |
684 | } | |
685 | } | |
686 | ||
7662d046 | 687 | static void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p) |
1da177e4 LT |
688 | { |
689 | if (!dir || !p) | |
690 | return; | |
691 | while (p->name != NULL) { | |
692 | remove_proc_entry(p->name, dir); | |
693 | p++; | |
694 | } | |
695 | } | |
696 | ||
7662d046 BZ |
697 | void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) |
698 | { | |
699 | ide_add_proc_entries(drive->proc, driver->proc, drive); | |
700 | } | |
701 | ||
702 | EXPORT_SYMBOL(ide_proc_register_driver); | |
703 | ||
704 | /** | |
705 | * ide_proc_unregister_driver - remove driver specific data | |
706 | * @drive: drive | |
707 | * @driver: driver | |
708 | * | |
709 | * Clean up the driver specific /proc files and IDE settings | |
710 | * for a given drive. | |
711 | * | |
f9383c42 | 712 | * Takes ide_setting_mtx and ide_lock. |
7662d046 BZ |
713 | * Caller must hold none of the locks. |
714 | */ | |
715 | ||
716 | void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) | |
717 | { | |
718 | unsigned long flags; | |
719 | ||
720 | ide_remove_proc_entries(drive->proc, driver->proc); | |
721 | ||
f9383c42 | 722 | mutex_lock(&ide_setting_mtx); |
7662d046 BZ |
723 | spin_lock_irqsave(&ide_lock, flags); |
724 | /* | |
f9383c42 | 725 | * ide_setting_mtx protects the settings list |
7662d046 BZ |
726 | * ide_lock protects the use of settings |
727 | * | |
728 | * so we need to hold both, ide_settings_sem because we want to | |
729 | * modify the settings list, and ide_lock because we cannot take | |
730 | * a setting out that is being used. | |
731 | * | |
732 | * OTOH both ide_{read,write}_setting are only ever used under | |
f9383c42 | 733 | * ide_setting_mtx. |
7662d046 BZ |
734 | */ |
735 | auto_remove_settings(drive); | |
736 | spin_unlock_irqrestore(&ide_lock, flags); | |
f9383c42 | 737 | mutex_unlock(&ide_setting_mtx); |
7662d046 BZ |
738 | } |
739 | ||
740 | EXPORT_SYMBOL(ide_proc_unregister_driver); | |
741 | ||
d9270a3f | 742 | void ide_proc_port_register_devices(ide_hwif_t *hwif) |
1da177e4 LT |
743 | { |
744 | int d; | |
745 | struct proc_dir_entry *ent; | |
746 | struct proc_dir_entry *parent = hwif->proc; | |
747 | char name[64]; | |
748 | ||
749 | for (d = 0; d < MAX_DRIVES; d++) { | |
750 | ide_drive_t *drive = &hwif->drives[d]; | |
751 | ||
752 | if (!drive->present) | |
753 | continue; | |
754 | if (drive->proc) | |
755 | continue; | |
756 | ||
757 | drive->proc = proc_mkdir(drive->name, parent); | |
758 | if (drive->proc) | |
759 | ide_add_proc_entries(drive->proc, generic_drive_entries, drive); | |
760 | sprintf(name,"ide%d/%s", (drive->name[2]-'a')/2, drive->name); | |
761 | ent = proc_symlink(drive->name, proc_ide_root, name); | |
762 | if (!ent) return; | |
763 | } | |
764 | } | |
765 | ||
766 | static void destroy_proc_ide_device(ide_hwif_t *hwif, ide_drive_t *drive) | |
767 | { | |
768 | if (drive->proc) { | |
769 | ide_remove_proc_entries(drive->proc, generic_drive_entries); | |
770 | remove_proc_entry(drive->name, proc_ide_root); | |
771 | remove_proc_entry(drive->name, hwif->proc); | |
772 | drive->proc = NULL; | |
773 | } | |
774 | } | |
775 | ||
776 | static void destroy_proc_ide_drives(ide_hwif_t *hwif) | |
777 | { | |
778 | int d; | |
779 | ||
780 | for (d = 0; d < MAX_DRIVES; d++) { | |
781 | ide_drive_t *drive = &hwif->drives[d]; | |
782 | if (drive->proc) | |
783 | destroy_proc_ide_device(hwif, drive); | |
784 | } | |
785 | } | |
786 | ||
787 | static ide_proc_entry_t hwif_entries[] = { | |
788 | { "channel", S_IFREG|S_IRUGO, proc_ide_read_channel, NULL }, | |
789 | { "mate", S_IFREG|S_IRUGO, proc_ide_read_mate, NULL }, | |
790 | { "model", S_IFREG|S_IRUGO, proc_ide_read_imodel, NULL }, | |
791 | { NULL, 0, NULL, NULL } | |
792 | }; | |
793 | ||
5cbf79cd | 794 | void ide_proc_register_port(ide_hwif_t *hwif) |
1da177e4 | 795 | { |
5cbf79cd BZ |
796 | if (!hwif->proc) { |
797 | hwif->proc = proc_mkdir(hwif->name, proc_ide_root); | |
1da177e4 | 798 | |
5cbf79cd BZ |
799 | if (!hwif->proc) |
800 | return; | |
801 | ||
802 | ide_add_proc_entries(hwif->proc, hwif_entries, hwif); | |
1da177e4 LT |
803 | } |
804 | } | |
805 | ||
1da177e4 LT |
806 | #ifdef CONFIG_BLK_DEV_IDEPCI |
807 | void ide_pci_create_host_proc(const char *name, get_info_t *get_info) | |
808 | { | |
809 | create_proc_info_entry(name, 0, proc_ide_root, get_info); | |
810 | } | |
811 | ||
812 | EXPORT_SYMBOL_GPL(ide_pci_create_host_proc); | |
813 | #endif | |
814 | ||
5cbf79cd | 815 | void ide_proc_unregister_port(ide_hwif_t *hwif) |
1da177e4 LT |
816 | { |
817 | if (hwif->proc) { | |
818 | destroy_proc_ide_drives(hwif); | |
819 | ide_remove_proc_entries(hwif->proc, hwif_entries); | |
820 | remove_proc_entry(hwif->name, proc_ide_root); | |
821 | hwif->proc = NULL; | |
822 | } | |
823 | } | |
824 | ||
8604affd BZ |
825 | static int proc_print_driver(struct device_driver *drv, void *data) |
826 | { | |
827 | ide_driver_t *ide_drv = container_of(drv, ide_driver_t, gen_driver); | |
828 | struct seq_file *s = data; | |
829 | ||
830 | seq_printf(s, "%s version %s\n", drv->name, ide_drv->version); | |
831 | ||
832 | return 0; | |
833 | } | |
834 | ||
835 | static int ide_drivers_show(struct seq_file *s, void *p) | |
836 | { | |
349ae23f RD |
837 | int err; |
838 | ||
839 | err = bus_for_each_drv(&ide_bus_type, NULL, s, proc_print_driver); | |
840 | if (err < 0) | |
841 | printk(KERN_WARNING "IDE: %s: bus_for_each_drv error: %d\n", | |
842 | __FUNCTION__, err); | |
8604affd BZ |
843 | return 0; |
844 | } | |
845 | ||
1da177e4 LT |
846 | static int ide_drivers_open(struct inode *inode, struct file *file) |
847 | { | |
8604affd | 848 | return single_open(file, &ide_drivers_show, NULL); |
1da177e4 | 849 | } |
8604affd | 850 | |
2b8693c0 | 851 | static const struct file_operations ide_drivers_operations = { |
1da177e4 LT |
852 | .open = ide_drivers_open, |
853 | .read = seq_read, | |
854 | .llseek = seq_lseek, | |
8604affd | 855 | .release = single_release, |
1da177e4 LT |
856 | }; |
857 | ||
858 | void proc_ide_create(void) | |
859 | { | |
860 | struct proc_dir_entry *entry; | |
861 | ||
5cbf79cd BZ |
862 | proc_ide_root = proc_mkdir("ide", NULL); |
863 | ||
1da177e4 LT |
864 | if (!proc_ide_root) |
865 | return; | |
866 | ||
1da177e4 LT |
867 | entry = create_proc_entry("drivers", 0, proc_ide_root); |
868 | if (entry) | |
869 | entry->proc_fops = &ide_drivers_operations; | |
870 | } | |
871 | ||
872 | void proc_ide_destroy(void) | |
873 | { | |
643bdc6f | 874 | remove_proc_entry("drivers", proc_ide_root); |
1da177e4 LT |
875 | remove_proc_entry("ide", NULL); |
876 | } |