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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) { | |
151a6701 BZ |
103 | char *out = (char *)page + SECTOR_SIZE; |
104 | ||
1da177e4 LT |
105 | page = out; |
106 | do { | |
107 | out += sprintf(out, "%04x%c", | |
7fa897b9 | 108 | le16_to_cpup(val), (++i & 7) ? ' ' : '\n'); |
1da177e4 | 109 | val += 1; |
151a6701 | 110 | } while (i < SECTOR_SIZE / 2); |
1da177e4 LT |
111 | len = out - page; |
112 | } | |
113 | } | |
441e92da | 114 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
115 | } |
116 | ||
7662d046 | 117 | /** |
8185d5aa BZ |
118 | * ide_find_setting - find a specific setting |
119 | * @st: setting table pointer | |
7662d046 | 120 | * @name: setting name |
7662d046 | 121 | * |
8185d5aa | 122 | * Scan's the setting table for a matching entry and returns |
7662d046 BZ |
123 | * this or NULL if no entry is found. The caller must hold the |
124 | * setting semaphore | |
125 | */ | |
126 | ||
92f1f8fd EO |
127 | static |
128 | const struct ide_proc_devset *ide_find_setting(const struct ide_proc_devset *st, | |
129 | char *name) | |
7662d046 | 130 | { |
92f1f8fd EO |
131 | while (st->name) { |
132 | if (strcmp(st->name, name) == 0) | |
7662d046 | 133 | break; |
8185d5aa | 134 | st++; |
7662d046 | 135 | } |
92f1f8fd | 136 | return st->name ? st : NULL; |
7662d046 BZ |
137 | } |
138 | ||
139 | /** | |
140 | * ide_read_setting - read an IDE setting | |
141 | * @drive: drive to read from | |
142 | * @setting: drive setting | |
143 | * | |
144 | * Read a drive setting and return the value. The caller | |
f9383c42 | 145 | * must hold the ide_setting_mtx when making this call. |
7662d046 BZ |
146 | * |
147 | * BUGS: the data return and error are the same return value | |
148 | * so an error -EINVAL and true return of the same value cannot | |
149 | * be told apart | |
150 | */ | |
151 | ||
8185d5aa | 152 | static int ide_read_setting(ide_drive_t *drive, |
92f1f8fd | 153 | const struct ide_proc_devset *setting) |
7662d046 | 154 | { |
92f1f8fd | 155 | const struct ide_devset *ds = setting->setting; |
8185d5aa BZ |
156 | int val = -EINVAL; |
157 | ||
92f1f8fd | 158 | if (ds->get) { |
8185d5aa | 159 | unsigned long flags; |
7662d046 | 160 | |
7662d046 | 161 | spin_lock_irqsave(&ide_lock, flags); |
92f1f8fd | 162 | val = ds->get(drive); |
7662d046 BZ |
163 | spin_unlock_irqrestore(&ide_lock, flags); |
164 | } | |
8185d5aa | 165 | |
7662d046 BZ |
166 | return val; |
167 | } | |
168 | ||
169 | /** | |
170 | * ide_write_setting - read an IDE setting | |
171 | * @drive: drive to read from | |
172 | * @setting: drive setting | |
173 | * @val: value | |
174 | * | |
175 | * Write a drive setting if it is possible. The caller | |
f9383c42 | 176 | * must hold the ide_setting_mtx when making this call. |
7662d046 BZ |
177 | * |
178 | * BUGS: the data return and error are the same return value | |
179 | * so an error -EINVAL and true return of the same value cannot | |
180 | * be told apart | |
181 | * | |
182 | * FIXME: This should be changed to enqueue a special request | |
183 | * to the driver to change settings, and then wait on a sema for completion. | |
184 | * The current scheme of polling is kludgy, though safe enough. | |
185 | */ | |
186 | ||
8185d5aa | 187 | static int ide_write_setting(ide_drive_t *drive, |
92f1f8fd | 188 | const struct ide_proc_devset *setting, int val) |
7662d046 | 189 | { |
92f1f8fd EO |
190 | const struct ide_devset *ds = setting->setting; |
191 | ||
7662d046 BZ |
192 | if (!capable(CAP_SYS_ADMIN)) |
193 | return -EACCES; | |
92f1f8fd | 194 | if (!ds->set) |
7662d046 | 195 | return -EPERM; |
92f1f8fd EO |
196 | if ((ds->flags & DS_SYNC) |
197 | && (val < setting->min || val > setting->max)) | |
7662d046 | 198 | return -EINVAL; |
92f1f8fd | 199 | return ide_devset_execute(drive, ds, val); |
7662d046 BZ |
200 | } |
201 | ||
92f1f8fd | 202 | ide_devset_get(xfer_rate, current_speed); |
8185d5aa | 203 | |
7662d046 BZ |
204 | static int set_xfer_rate (ide_drive_t *drive, int arg) |
205 | { | |
34f5d5ae | 206 | ide_task_t task; |
7662d046 BZ |
207 | int err; |
208 | ||
3b2a5c71 | 209 | if (arg < XFER_PIO_0 || arg > XFER_UDMA_6) |
7662d046 BZ |
210 | return -EINVAL; |
211 | ||
34f5d5ae | 212 | memset(&task, 0, sizeof(task)); |
aaaade3f | 213 | task.tf.command = ATA_CMD_SET_FEATURES; |
34f5d5ae BZ |
214 | task.tf.feature = SETFEATURES_XFER; |
215 | task.tf.nsect = (u8)arg; | |
216 | task.tf_flags = IDE_TFLAG_OUT_FEATURE | IDE_TFLAG_OUT_NSECT | | |
217 | IDE_TFLAG_IN_NSECT; | |
218 | ||
219 | err = ide_no_data_taskfile(drive, &task); | |
7662d046 | 220 | |
3b2a5c71 | 221 | if (!err) { |
7662d046 BZ |
222 | ide_set_xfer_rate(drive, (u8) arg); |
223 | ide_driveid_update(drive); | |
224 | } | |
225 | return err; | |
226 | } | |
227 | ||
92f1f8fd EO |
228 | ide_devset_rw(current_speed, xfer_rate); |
229 | ide_devset_rw_field(init_speed, init_speed); | |
230 | ide_devset_rw_field(nice1, nice1); | |
231 | ide_devset_rw_field(number, dn); | |
232 | ||
233 | static const struct ide_proc_devset ide_generic_settings[] = { | |
234 | IDE_PROC_DEVSET(current_speed, 0, 70), | |
235 | IDE_PROC_DEVSET(init_speed, 0, 70), | |
236 | IDE_PROC_DEVSET(io_32bit, 0, 1 + (SUPPORT_VLB_SYNC << 1)), | |
237 | IDE_PROC_DEVSET(keepsettings, 0, 1), | |
238 | IDE_PROC_DEVSET(nice1, 0, 1), | |
239 | IDE_PROC_DEVSET(number, 0, 3), | |
240 | IDE_PROC_DEVSET(pio_mode, 0, 255), | |
241 | IDE_PROC_DEVSET(unmaskirq, 0, 1), | |
242 | IDE_PROC_DEVSET(using_dma, 0, 1), | |
243 | { 0 }, | |
8185d5aa | 244 | }; |
7662d046 | 245 | |
1da177e4 LT |
246 | static void proc_ide_settings_warn(void) |
247 | { | |
441e92da | 248 | static int warned; |
1da177e4 LT |
249 | |
250 | if (warned) | |
251 | return; | |
252 | ||
253 | printk(KERN_WARNING "Warning: /proc/ide/hd?/settings interface is " | |
254 | "obsolete, and will be removed soon!\n"); | |
255 | warned = 1; | |
256 | } | |
257 | ||
258 | static int proc_ide_read_settings | |
259 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
260 | { | |
92f1f8fd EO |
261 | const struct ide_proc_devset *setting, *g, *d; |
262 | const struct ide_devset *ds; | |
1da177e4 | 263 | ide_drive_t *drive = (ide_drive_t *) data; |
1da177e4 LT |
264 | char *out = page; |
265 | int len, rc, mul_factor, div_factor; | |
266 | ||
267 | proc_ide_settings_warn(); | |
268 | ||
f9383c42 | 269 | mutex_lock(&ide_setting_mtx); |
8185d5aa BZ |
270 | g = ide_generic_settings; |
271 | d = drive->settings; | |
1da177e4 LT |
272 | out += sprintf(out, "name\t\t\tvalue\t\tmin\t\tmax\t\tmode\n"); |
273 | out += sprintf(out, "----\t\t\t-----\t\t---\t\t---\t\t----\n"); | |
92f1f8fd | 274 | while (g->name || (d && d->name)) { |
8185d5aa | 275 | /* read settings in the alphabetical order */ |
92f1f8fd EO |
276 | if (g->name && d && d->name) { |
277 | if (strcmp(d->name, g->name) < 0) | |
278 | setting = d++; | |
8185d5aa | 279 | else |
92f1f8fd EO |
280 | setting = g++; |
281 | } else if (d && d->name) { | |
282 | setting = d++; | |
8185d5aa | 283 | } else |
92f1f8fd | 284 | setting = g++; |
8185d5aa BZ |
285 | mul_factor = setting->mulf ? setting->mulf(drive) : 1; |
286 | div_factor = setting->divf ? setting->divf(drive) : 1; | |
1da177e4 | 287 | out += sprintf(out, "%-24s", setting->name); |
441e92da PC |
288 | rc = ide_read_setting(drive, setting); |
289 | if (rc >= 0) | |
1da177e4 LT |
290 | out += sprintf(out, "%-16d", rc * mul_factor / div_factor); |
291 | else | |
292 | out += sprintf(out, "%-16s", "write-only"); | |
293 | out += sprintf(out, "%-16d%-16d", (setting->min * mul_factor + div_factor - 1) / div_factor, setting->max * mul_factor / div_factor); | |
92f1f8fd EO |
294 | ds = setting->setting; |
295 | if (ds->get) | |
1da177e4 | 296 | out += sprintf(out, "r"); |
92f1f8fd | 297 | if (ds->set) |
1da177e4 LT |
298 | out += sprintf(out, "w"); |
299 | out += sprintf(out, "\n"); | |
1da177e4 LT |
300 | } |
301 | len = out - page; | |
f9383c42 | 302 | mutex_unlock(&ide_setting_mtx); |
441e92da | 303 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
304 | } |
305 | ||
306 | #define MAX_LEN 30 | |
307 | ||
308 | static int proc_ide_write_settings(struct file *file, const char __user *buffer, | |
309 | unsigned long count, void *data) | |
310 | { | |
311 | ide_drive_t *drive = (ide_drive_t *) data; | |
312 | char name[MAX_LEN + 1]; | |
8185d5aa | 313 | int for_real = 0, mul_factor, div_factor; |
1da177e4 | 314 | unsigned long n; |
8185d5aa | 315 | |
92f1f8fd | 316 | const struct ide_proc_devset *setting; |
1da177e4 LT |
317 | char *buf, *s; |
318 | ||
319 | if (!capable(CAP_SYS_ADMIN)) | |
320 | return -EACCES; | |
321 | ||
322 | proc_ide_settings_warn(); | |
323 | ||
324 | if (count >= PAGE_SIZE) | |
325 | return -EINVAL; | |
326 | ||
327 | s = buf = (char *)__get_free_page(GFP_USER); | |
328 | if (!buf) | |
329 | return -ENOMEM; | |
330 | ||
331 | if (copy_from_user(buf, buffer, count)) { | |
332 | free_page((unsigned long)buf); | |
333 | return -EFAULT; | |
334 | } | |
335 | ||
336 | buf[count] = '\0'; | |
337 | ||
338 | /* | |
339 | * Skip over leading whitespace | |
340 | */ | |
341 | while (count && isspace(*s)) { | |
342 | --count; | |
343 | ++s; | |
344 | } | |
345 | /* | |
346 | * Do one full pass to verify all parameters, | |
347 | * then do another to actually write the new settings. | |
348 | */ | |
349 | do { | |
350 | char *p = s; | |
351 | n = count; | |
352 | while (n > 0) { | |
353 | unsigned val; | |
354 | char *q = p; | |
355 | ||
356 | while (n > 0 && *p != ':') { | |
357 | --n; | |
358 | p++; | |
359 | } | |
360 | if (*p != ':') | |
361 | goto parse_error; | |
362 | if (p - q > MAX_LEN) | |
363 | goto parse_error; | |
364 | memcpy(name, q, p - q); | |
365 | name[p - q] = 0; | |
366 | ||
367 | if (n > 0) { | |
368 | --n; | |
369 | p++; | |
370 | } else | |
371 | goto parse_error; | |
372 | ||
373 | val = simple_strtoul(p, &q, 10); | |
374 | n -= q - p; | |
375 | p = q; | |
376 | if (n > 0 && !isspace(*p)) | |
377 | goto parse_error; | |
378 | while (n > 0 && isspace(*p)) { | |
379 | --n; | |
380 | ++p; | |
381 | } | |
382 | ||
f9383c42 | 383 | mutex_lock(&ide_setting_mtx); |
8185d5aa BZ |
384 | /* generic settings first, then driver specific ones */ |
385 | setting = ide_find_setting(ide_generic_settings, name); | |
441e92da | 386 | if (!setting) { |
8185d5aa BZ |
387 | if (drive->settings) |
388 | setting = ide_find_setting(drive->settings, name); | |
389 | if (!setting) { | |
390 | mutex_unlock(&ide_setting_mtx); | |
391 | goto parse_error; | |
392 | } | |
393 | } | |
394 | if (for_real) { | |
395 | mul_factor = setting->mulf ? setting->mulf(drive) : 1; | |
396 | div_factor = setting->divf ? setting->divf(drive) : 1; | |
397 | ide_write_setting(drive, setting, val * div_factor / mul_factor); | |
1da177e4 | 398 | } |
f9383c42 | 399 | mutex_unlock(&ide_setting_mtx); |
1da177e4 LT |
400 | } |
401 | } while (!for_real++); | |
402 | free_page((unsigned long)buf); | |
403 | return count; | |
404 | parse_error: | |
405 | free_page((unsigned long)buf); | |
406 | printk("proc_ide_write_settings(): parse error\n"); | |
407 | return -EINVAL; | |
408 | } | |
409 | ||
410 | int proc_ide_read_capacity | |
411 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
412 | { | |
441e92da PC |
413 | int len = sprintf(page, "%llu\n", (long long)0x7fffffff); |
414 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); | |
1da177e4 LT |
415 | } |
416 | ||
417 | EXPORT_SYMBOL_GPL(proc_ide_read_capacity); | |
418 | ||
419 | int proc_ide_read_geometry | |
420 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
421 | { | |
422 | ide_drive_t *drive = (ide_drive_t *) data; | |
423 | char *out = page; | |
424 | int len; | |
425 | ||
441e92da | 426 | out += sprintf(out, "physical %d/%d/%d\n", |
1da177e4 | 427 | drive->cyl, drive->head, drive->sect); |
441e92da | 428 | out += sprintf(out, "logical %d/%d/%d\n", |
1da177e4 LT |
429 | drive->bios_cyl, drive->bios_head, drive->bios_sect); |
430 | ||
431 | len = out - page; | |
441e92da | 432 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
433 | } |
434 | ||
435 | EXPORT_SYMBOL(proc_ide_read_geometry); | |
436 | ||
437 | static int proc_ide_read_dmodel | |
438 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
439 | { | |
440 | ide_drive_t *drive = (ide_drive_t *) data; | |
4dde4492 | 441 | char *m = (char *)&drive->id[ATA_ID_PROD]; |
1da177e4 LT |
442 | int len; |
443 | ||
4dde4492 | 444 | len = sprintf(page, "%.40s\n", m[0] ? m : "(none)"); |
441e92da | 445 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
446 | } |
447 | ||
448 | static int proc_ide_read_driver | |
449 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
450 | { | |
451 | ide_drive_t *drive = (ide_drive_t *) data; | |
8604affd BZ |
452 | struct device *dev = &drive->gendev; |
453 | ide_driver_t *ide_drv; | |
1da177e4 LT |
454 | int len; |
455 | ||
8604affd BZ |
456 | if (dev->driver) { |
457 | ide_drv = container_of(dev->driver, ide_driver_t, gen_driver); | |
1da177e4 | 458 | len = sprintf(page, "%s version %s\n", |
8604affd | 459 | dev->driver->name, ide_drv->version); |
1da177e4 LT |
460 | } else |
461 | len = sprintf(page, "ide-default version 0.9.newide\n"); | |
441e92da | 462 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
463 | } |
464 | ||
8604affd BZ |
465 | static int ide_replace_subdriver(ide_drive_t *drive, const char *driver) |
466 | { | |
467 | struct device *dev = &drive->gendev; | |
468 | int ret = 1; | |
349ae23f | 469 | int err; |
8604affd | 470 | |
8604affd BZ |
471 | device_release_driver(dev); |
472 | /* FIXME: device can still be in use by previous driver */ | |
473 | strlcpy(drive->driver_req, driver, sizeof(drive->driver_req)); | |
349ae23f RD |
474 | err = device_attach(dev); |
475 | if (err < 0) | |
476 | printk(KERN_WARNING "IDE: %s: device_attach error: %d\n", | |
eb63963a | 477 | __func__, err); |
8604affd | 478 | drive->driver_req[0] = 0; |
349ae23f RD |
479 | if (dev->driver == NULL) { |
480 | err = device_attach(dev); | |
481 | if (err < 0) | |
482 | printk(KERN_WARNING | |
483 | "IDE: %s: device_attach(2) error: %d\n", | |
eb63963a | 484 | __func__, err); |
349ae23f | 485 | } |
8604affd BZ |
486 | if (dev->driver && !strcmp(dev->driver->name, driver)) |
487 | ret = 0; | |
8604affd BZ |
488 | |
489 | return ret; | |
490 | } | |
491 | ||
1da177e4 LT |
492 | static int proc_ide_write_driver |
493 | (struct file *file, const char __user *buffer, unsigned long count, void *data) | |
494 | { | |
495 | ide_drive_t *drive = (ide_drive_t *) data; | |
496 | char name[32]; | |
497 | ||
498 | if (!capable(CAP_SYS_ADMIN)) | |
499 | return -EACCES; | |
500 | if (count > 31) | |
501 | count = 31; | |
502 | if (copy_from_user(name, buffer, count)) | |
503 | return -EFAULT; | |
504 | name[count] = '\0'; | |
505 | if (ide_replace_subdriver(drive, name)) | |
506 | return -EINVAL; | |
507 | return count; | |
508 | } | |
509 | ||
510 | static int proc_ide_read_media | |
511 | (char *page, char **start, off_t off, int count, int *eof, void *data) | |
512 | { | |
513 | ide_drive_t *drive = (ide_drive_t *) data; | |
514 | const char *media; | |
515 | int len; | |
516 | ||
517 | switch (drive->media) { | |
441e92da PC |
518 | case ide_disk: media = "disk\n"; break; |
519 | case ide_cdrom: media = "cdrom\n"; break; | |
520 | case ide_tape: media = "tape\n"; break; | |
521 | case ide_floppy: media = "floppy\n"; break; | |
522 | case ide_optical: media = "optical\n"; break; | |
523 | default: media = "UNKNOWN\n"; break; | |
1da177e4 | 524 | } |
441e92da | 525 | strcpy(page, media); |
1da177e4 | 526 | len = strlen(media); |
441e92da | 527 | PROC_IDE_READ_RETURN(page, start, off, count, eof, len); |
1da177e4 LT |
528 | } |
529 | ||
530 | static ide_proc_entry_t generic_drive_entries[] = { | |
441e92da PC |
531 | { "driver", S_IFREG|S_IRUGO, proc_ide_read_driver, |
532 | proc_ide_write_driver }, | |
533 | { "identify", S_IFREG|S_IRUSR, proc_ide_read_identify, NULL }, | |
534 | { "media", S_IFREG|S_IRUGO, proc_ide_read_media, NULL }, | |
535 | { "model", S_IFREG|S_IRUGO, proc_ide_read_dmodel, NULL }, | |
536 | { "settings", S_IFREG|S_IRUSR|S_IWUSR, proc_ide_read_settings, | |
537 | proc_ide_write_settings }, | |
1da177e4 LT |
538 | { NULL, 0, NULL, NULL } |
539 | }; | |
540 | ||
7662d046 | 541 | static void ide_add_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p, void *data) |
1da177e4 LT |
542 | { |
543 | struct proc_dir_entry *ent; | |
544 | ||
545 | if (!dir || !p) | |
546 | return; | |
547 | while (p->name != NULL) { | |
548 | ent = create_proc_entry(p->name, p->mode, dir); | |
549 | if (!ent) return; | |
1da177e4 LT |
550 | ent->data = data; |
551 | ent->read_proc = p->read_proc; | |
552 | ent->write_proc = p->write_proc; | |
553 | p++; | |
554 | } | |
555 | } | |
556 | ||
7662d046 | 557 | static void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p) |
1da177e4 LT |
558 | { |
559 | if (!dir || !p) | |
560 | return; | |
561 | while (p->name != NULL) { | |
562 | remove_proc_entry(p->name, dir); | |
563 | p++; | |
564 | } | |
565 | } | |
566 | ||
7662d046 BZ |
567 | void ide_proc_register_driver(ide_drive_t *drive, ide_driver_t *driver) |
568 | { | |
8185d5aa BZ |
569 | mutex_lock(&ide_setting_mtx); |
570 | drive->settings = driver->settings; | |
571 | mutex_unlock(&ide_setting_mtx); | |
572 | ||
7662d046 BZ |
573 | ide_add_proc_entries(drive->proc, driver->proc, drive); |
574 | } | |
575 | ||
576 | EXPORT_SYMBOL(ide_proc_register_driver); | |
577 | ||
578 | /** | |
579 | * ide_proc_unregister_driver - remove driver specific data | |
580 | * @drive: drive | |
581 | * @driver: driver | |
582 | * | |
583 | * Clean up the driver specific /proc files and IDE settings | |
584 | * for a given drive. | |
585 | * | |
f9383c42 | 586 | * Takes ide_setting_mtx and ide_lock. |
7662d046 BZ |
587 | * Caller must hold none of the locks. |
588 | */ | |
589 | ||
590 | void ide_proc_unregister_driver(ide_drive_t *drive, ide_driver_t *driver) | |
591 | { | |
592 | unsigned long flags; | |
593 | ||
594 | ide_remove_proc_entries(drive->proc, driver->proc); | |
595 | ||
f9383c42 | 596 | mutex_lock(&ide_setting_mtx); |
7662d046 BZ |
597 | spin_lock_irqsave(&ide_lock, flags); |
598 | /* | |
f9383c42 | 599 | * ide_setting_mtx protects the settings list |
7662d046 BZ |
600 | * ide_lock protects the use of settings |
601 | * | |
602 | * so we need to hold both, ide_settings_sem because we want to | |
603 | * modify the settings list, and ide_lock because we cannot take | |
604 | * a setting out that is being used. | |
605 | * | |
606 | * OTOH both ide_{read,write}_setting are only ever used under | |
f9383c42 | 607 | * ide_setting_mtx. |
7662d046 | 608 | */ |
8185d5aa | 609 | drive->settings = NULL; |
7662d046 | 610 | spin_unlock_irqrestore(&ide_lock, flags); |
f9383c42 | 611 | mutex_unlock(&ide_setting_mtx); |
7662d046 | 612 | } |
7662d046 BZ |
613 | EXPORT_SYMBOL(ide_proc_unregister_driver); |
614 | ||
d9270a3f | 615 | void ide_proc_port_register_devices(ide_hwif_t *hwif) |
1da177e4 LT |
616 | { |
617 | int d; | |
618 | struct proc_dir_entry *ent; | |
619 | struct proc_dir_entry *parent = hwif->proc; | |
620 | char name[64]; | |
621 | ||
622 | for (d = 0; d < MAX_DRIVES; d++) { | |
623 | ide_drive_t *drive = &hwif->drives[d]; | |
624 | ||
625 | if (!drive->present) | |
626 | continue; | |
627 | if (drive->proc) | |
628 | continue; | |
629 | ||
630 | drive->proc = proc_mkdir(drive->name, parent); | |
631 | if (drive->proc) | |
632 | ide_add_proc_entries(drive->proc, generic_drive_entries, drive); | |
441e92da | 633 | sprintf(name, "ide%d/%s", (drive->name[2]-'a')/2, drive->name); |
1da177e4 LT |
634 | ent = proc_symlink(drive->name, proc_ide_root, name); |
635 | if (!ent) return; | |
636 | } | |
637 | } | |
638 | ||
5b0c4b30 | 639 | void ide_proc_unregister_device(ide_drive_t *drive) |
1da177e4 LT |
640 | { |
641 | if (drive->proc) { | |
642 | ide_remove_proc_entries(drive->proc, generic_drive_entries); | |
643 | remove_proc_entry(drive->name, proc_ide_root); | |
5b0c4b30 | 644 | remove_proc_entry(drive->name, drive->hwif->proc); |
1da177e4 LT |
645 | drive->proc = NULL; |
646 | } | |
647 | } | |
648 | ||
1da177e4 LT |
649 | static ide_proc_entry_t hwif_entries[] = { |
650 | { "channel", S_IFREG|S_IRUGO, proc_ide_read_channel, NULL }, | |
651 | { "mate", S_IFREG|S_IRUGO, proc_ide_read_mate, NULL }, | |
652 | { "model", S_IFREG|S_IRUGO, proc_ide_read_imodel, NULL }, | |
653 | { NULL, 0, NULL, NULL } | |
654 | }; | |
655 | ||
5cbf79cd | 656 | void ide_proc_register_port(ide_hwif_t *hwif) |
1da177e4 | 657 | { |
5cbf79cd BZ |
658 | if (!hwif->proc) { |
659 | hwif->proc = proc_mkdir(hwif->name, proc_ide_root); | |
1da177e4 | 660 | |
5cbf79cd BZ |
661 | if (!hwif->proc) |
662 | return; | |
663 | ||
664 | ide_add_proc_entries(hwif->proc, hwif_entries, hwif); | |
1da177e4 LT |
665 | } |
666 | } | |
667 | ||
5cbf79cd | 668 | void ide_proc_unregister_port(ide_hwif_t *hwif) |
1da177e4 LT |
669 | { |
670 | if (hwif->proc) { | |
1da177e4 LT |
671 | ide_remove_proc_entries(hwif->proc, hwif_entries); |
672 | remove_proc_entry(hwif->name, proc_ide_root); | |
673 | hwif->proc = NULL; | |
674 | } | |
675 | } | |
676 | ||
8604affd BZ |
677 | static int proc_print_driver(struct device_driver *drv, void *data) |
678 | { | |
679 | ide_driver_t *ide_drv = container_of(drv, ide_driver_t, gen_driver); | |
680 | struct seq_file *s = data; | |
681 | ||
682 | seq_printf(s, "%s version %s\n", drv->name, ide_drv->version); | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
687 | static int ide_drivers_show(struct seq_file *s, void *p) | |
688 | { | |
349ae23f RD |
689 | int err; |
690 | ||
691 | err = bus_for_each_drv(&ide_bus_type, NULL, s, proc_print_driver); | |
692 | if (err < 0) | |
693 | printk(KERN_WARNING "IDE: %s: bus_for_each_drv error: %d\n", | |
eb63963a | 694 | __func__, err); |
8604affd BZ |
695 | return 0; |
696 | } | |
697 | ||
1da177e4 LT |
698 | static int ide_drivers_open(struct inode *inode, struct file *file) |
699 | { | |
8604affd | 700 | return single_open(file, &ide_drivers_show, NULL); |
1da177e4 | 701 | } |
8604affd | 702 | |
2b8693c0 | 703 | static const struct file_operations ide_drivers_operations = { |
c7705f34 | 704 | .owner = THIS_MODULE, |
1da177e4 LT |
705 | .open = ide_drivers_open, |
706 | .read = seq_read, | |
707 | .llseek = seq_lseek, | |
8604affd | 708 | .release = single_release, |
1da177e4 LT |
709 | }; |
710 | ||
711 | void proc_ide_create(void) | |
712 | { | |
5cbf79cd BZ |
713 | proc_ide_root = proc_mkdir("ide", NULL); |
714 | ||
1da177e4 LT |
715 | if (!proc_ide_root) |
716 | return; | |
717 | ||
c7705f34 | 718 | proc_create("drivers", 0, proc_ide_root, &ide_drivers_operations); |
1da177e4 LT |
719 | } |
720 | ||
721 | void proc_ide_destroy(void) | |
722 | { | |
643bdc6f | 723 | remove_proc_entry("drivers", proc_ide_root); |
1da177e4 LT |
724 | remove_proc_entry("ide", NULL); |
725 | } |