Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 | 2 | * Copyright (C) 1997-1998 Mark Lord |
ccd32e22 | 3 | * Copyright (C) 2003 Red Hat |
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 | ||
6d703a81 | 33 | static int ide_imodel_proc_show(struct seq_file *m, void *v) |
1da177e4 | 34 | { |
6d703a81 | 35 | ide_hwif_t *hwif = (ide_hwif_t *) m->private; |
1da177e4 LT |
36 | const char *name; |
37 | ||
1da177e4 | 38 | switch (hwif->chipset) { |
441e92da PC |
39 | case ide_generic: name = "generic"; break; |
40 | case ide_pci: name = "pci"; break; | |
41 | case ide_cmd640: name = "cmd640"; break; | |
42 | case ide_dtc2278: name = "dtc2278"; break; | |
43 | case ide_ali14xx: name = "ali14xx"; break; | |
44 | case ide_qd65xx: name = "qd65xx"; break; | |
45 | case ide_umc8672: name = "umc8672"; break; | |
46 | case ide_ht6560b: name = "ht6560b"; break; | |
441e92da PC |
47 | case ide_4drives: name = "4drives"; break; |
48 | case ide_pmac: name = "mac-io"; break; | |
49 | case ide_au1xxx: name = "au1xxx"; break; | |
50 | case ide_palm3710: name = "palm3710"; break; | |
441e92da PC |
51 | case ide_acorn: name = "acorn"; break; |
52 | default: name = "(unknown)"; break; | |
1da177e4 | 53 | } |
6d703a81 AD |
54 | seq_printf(m, "%s\n", name); |
55 | return 0; | |
1da177e4 LT |
56 | } |
57 | ||
6d703a81 | 58 | static int ide_imodel_proc_open(struct inode *inode, struct file *file) |
1da177e4 | 59 | { |
6d703a81 AD |
60 | return single_open(file, ide_imodel_proc_show, PDE(inode)->data); |
61 | } | |
62 | ||
63 | static const struct file_operations ide_imodel_proc_fops = { | |
64 | .owner = THIS_MODULE, | |
65 | .open = ide_imodel_proc_open, | |
66 | .read = seq_read, | |
67 | .llseek = seq_lseek, | |
68 | .release = single_release, | |
69 | }; | |
70 | ||
71 | static int ide_mate_proc_show(struct seq_file *m, void *v) | |
72 | { | |
73 | ide_hwif_t *hwif = (ide_hwif_t *) m->private; | |
1da177e4 | 74 | |
4283e1ba | 75 | if (hwif && hwif->mate) |
6d703a81 | 76 | seq_printf(m, "%s\n", hwif->mate->name); |
1da177e4 | 77 | else |
6d703a81 AD |
78 | seq_printf(m, "(none)\n"); |
79 | return 0; | |
1da177e4 LT |
80 | } |
81 | ||
6d703a81 | 82 | static int ide_mate_proc_open(struct inode *inode, struct file *file) |
1da177e4 | 83 | { |
6d703a81 AD |
84 | return single_open(file, ide_mate_proc_show, PDE(inode)->data); |
85 | } | |
1da177e4 | 86 | |
6d703a81 AD |
87 | static const struct file_operations ide_mate_proc_fops = { |
88 | .owner = THIS_MODULE, | |
89 | .open = ide_mate_proc_open, | |
90 | .read = seq_read, | |
91 | .llseek = seq_lseek, | |
92 | .release = single_release, | |
93 | }; | |
94 | ||
95 | static int ide_channel_proc_show(struct seq_file *m, void *v) | |
96 | { | |
97 | ide_hwif_t *hwif = (ide_hwif_t *) m->private; | |
98 | ||
99 | seq_printf(m, "%c\n", hwif->channel ? '1' : '0'); | |
100 | return 0; | |
1da177e4 LT |
101 | } |
102 | ||
6d703a81 | 103 | static int ide_channel_proc_open(struct inode *inode, struct file *file) |
1da177e4 | 104 | { |
6d703a81 AD |
105 | return single_open(file, ide_channel_proc_show, PDE(inode)->data); |
106 | } | |
107 | ||
108 | static const struct file_operations ide_channel_proc_fops = { | |
109 | .owner = THIS_MODULE, | |
110 | .open = ide_channel_proc_open, | |
111 | .read = seq_read, | |
112 | .llseek = seq_lseek, | |
113 | .release = single_release, | |
114 | }; | |
1da177e4 | 115 | |
6d703a81 AD |
116 | static int ide_identify_proc_show(struct seq_file *m, void *v) |
117 | { | |
118 | ide_drive_t *drive = (ide_drive_t *)m->private; | |
119 | u8 *buf; | |
1da177e4 | 120 | |
6d703a81 AD |
121 | if (!drive) { |
122 | seq_putc(m, '\n'); | |
123 | return 0; | |
124 | } | |
1da177e4 | 125 | |
6d703a81 AD |
126 | buf = kmalloc(SECTOR_SIZE, GFP_KERNEL); |
127 | if (!buf) | |
128 | return -ENOMEM; | |
129 | if (taskfile_lib_get_identify(drive, buf) == 0) { | |
130 | __le16 *val = (__le16 *)buf; | |
131 | int i; | |
151a6701 | 132 | |
6d703a81 AD |
133 | for (i = 0; i < SECTOR_SIZE / 2; i++) { |
134 | seq_printf(m, "%04x%c", le16_to_cpu(val[i]), | |
135 | (i % 8) == 7 ? '\n' : ' '); | |
1da177e4 | 136 | } |
6d703a81 AD |
137 | } else |
138 | seq_putc(m, buf[0]); | |
139 | kfree(buf); | |
140 | return 0; | |
1da177e4 LT |
141 | } |
142 | ||
6d703a81 AD |
143 | static int ide_identify_proc_open(struct inode *inode, struct file *file) |
144 | { | |
145 | return single_open(file, ide_identify_proc_show, PDE(inode)->data); | |
146 | } | |
147 | ||
148 | static const struct file_operations ide_identify_proc_fops = { | |
149 | .owner = THIS_MODULE, | |
150 | .open = ide_identify_proc_open, | |
151 | .read = seq_read, | |
152 | .llseek = seq_lseek, | |
153 | .release = single_release, | |
154 | }; | |
155 | ||
7662d046 | 156 | /** |
8185d5aa BZ |
157 | * ide_find_setting - find a specific setting |
158 | * @st: setting table pointer | |
7662d046 | 159 | * @name: setting name |
7662d046 | 160 | * |
8185d5aa | 161 | * Scan's the setting table for a matching entry and returns |
7662d046 BZ |
162 | * this or NULL if no entry is found. The caller must hold the |
163 | * setting semaphore | |
164 | */ | |
165 | ||
92f1f8fd EO |
166 | static |
167 | const struct ide_proc_devset *ide_find_setting(const struct ide_proc_devset *st, | |
168 | char *name) | |
7662d046 | 169 | { |
92f1f8fd EO |
170 | while (st->name) { |
171 | if (strcmp(st->name, name) == 0) | |
7662d046 | 172 | break; |
8185d5aa | 173 | st++; |
7662d046 | 174 | } |
92f1f8fd | 175 | return st->name ? st : NULL; |
7662d046 BZ |
176 | } |
177 | ||
178 | /** | |
179 | * ide_read_setting - read an IDE setting | |
180 | * @drive: drive to read from | |
181 | * @setting: drive setting | |
182 | * | |
183 | * Read a drive setting and return the value. The caller | |
f9383c42 | 184 | * must hold the ide_setting_mtx when making this call. |
7662d046 BZ |
185 | * |
186 | * BUGS: the data return and error are the same return value | |
187 | * so an error -EINVAL and true return of the same value cannot | |
188 | * be told apart | |
189 | */ | |
190 | ||
8185d5aa | 191 | static int ide_read_setting(ide_drive_t *drive, |
92f1f8fd | 192 | const struct ide_proc_devset *setting) |
7662d046 | 193 | { |
92f1f8fd | 194 | const struct ide_devset *ds = setting->setting; |
8185d5aa BZ |
195 | int val = -EINVAL; |
196 | ||
1f473e9c | 197 | if (ds->get) |
92f1f8fd | 198 | val = ds->get(drive); |
8185d5aa | 199 | |
7662d046 BZ |
200 | return val; |
201 | } | |
202 | ||
203 | /** | |
204 | * ide_write_setting - read an IDE setting | |
205 | * @drive: drive to read from | |
206 | * @setting: drive setting | |
207 | * @val: value | |
208 | * | |
209 | * Write a drive setting if it is possible. The caller | |
f9383c42 | 210 | * must hold the ide_setting_mtx when making this call. |
7662d046 BZ |
211 | * |
212 | * BUGS: the data return and error are the same return value | |
213 | * so an error -EINVAL and true return of the same value cannot | |
214 | * be told apart | |
215 | * | |
216 | * FIXME: This should be changed to enqueue a special request | |
217 | * to the driver to change settings, and then wait on a sema for completion. | |
218 | * The current scheme of polling is kludgy, though safe enough. | |
219 | */ | |
220 | ||
8185d5aa | 221 | static int ide_write_setting(ide_drive_t *drive, |
92f1f8fd | 222 | const struct ide_proc_devset *setting, int val) |
7662d046 | 223 | { |
92f1f8fd EO |
224 | const struct ide_devset *ds = setting->setting; |
225 | ||
7662d046 BZ |
226 | if (!capable(CAP_SYS_ADMIN)) |
227 | return -EACCES; | |
92f1f8fd | 228 | if (!ds->set) |
7662d046 | 229 | return -EPERM; |
92f1f8fd EO |
230 | if ((ds->flags & DS_SYNC) |
231 | && (val < setting->min || val > setting->max)) | |
7662d046 | 232 | return -EINVAL; |
92f1f8fd | 233 | return ide_devset_execute(drive, ds, val); |
7662d046 BZ |
234 | } |
235 | ||
92f1f8fd | 236 | ide_devset_get(xfer_rate, current_speed); |
8185d5aa | 237 | |
7662d046 BZ |
238 | static int set_xfer_rate (ide_drive_t *drive, int arg) |
239 | { | |
22aa4b32 | 240 | struct ide_cmd cmd; |
7662d046 | 241 | |
3b2a5c71 | 242 | if (arg < XFER_PIO_0 || arg > XFER_UDMA_6) |
7662d046 BZ |
243 | return -EINVAL; |
244 | ||
22aa4b32 BZ |
245 | memset(&cmd, 0, sizeof(cmd)); |
246 | cmd.tf.command = ATA_CMD_SET_FEATURES; | |
247 | cmd.tf.feature = SETFEATURES_XFER; | |
248 | cmd.tf.nsect = (u8)arg; | |
60f85019 SS |
249 | cmd.valid.out.tf = IDE_VALID_FEATURE | IDE_VALID_NSECT; |
250 | cmd.valid.in.tf = IDE_VALID_NSECT; | |
665d66e8 | 251 | cmd.tf_flags = IDE_TFLAG_SET_XFER; |
34f5d5ae | 252 | |
665d66e8 | 253 | return ide_no_data_taskfile(drive, &cmd); |
7662d046 BZ |
254 | } |
255 | ||
92f1f8fd EO |
256 | ide_devset_rw(current_speed, xfer_rate); |
257 | ide_devset_rw_field(init_speed, init_speed); | |
97100fc8 | 258 | ide_devset_rw_flag(nice1, IDE_DFLAG_NICE1); |
92f1f8fd EO |
259 | ide_devset_rw_field(number, dn); |
260 | ||
261 | static const struct ide_proc_devset ide_generic_settings[] = { | |
262 | IDE_PROC_DEVSET(current_speed, 0, 70), | |
263 | IDE_PROC_DEVSET(init_speed, 0, 70), | |
264 | IDE_PROC_DEVSET(io_32bit, 0, 1 + (SUPPORT_VLB_SYNC << 1)), | |
265 | IDE_PROC_DEVSET(keepsettings, 0, 1), | |
266 | IDE_PROC_DEVSET(nice1, 0, 1), | |
267 | IDE_PROC_DEVSET(number, 0, 3), | |
268 | IDE_PROC_DEVSET(pio_mode, 0, 255), | |
269 | IDE_PROC_DEVSET(unmaskirq, 0, 1), | |
270 | IDE_PROC_DEVSET(using_dma, 0, 1), | |
71bfc7a7 | 271 | { NULL }, |
8185d5aa | 272 | }; |
7662d046 | 273 | |
1da177e4 LT |
274 | static void proc_ide_settings_warn(void) |
275 | { | |
01f1afaf | 276 | printk_once(KERN_WARNING "Warning: /proc/ide/hd?/settings interface is " |
1da177e4 | 277 | "obsolete, and will be removed soon!\n"); |
1da177e4 LT |
278 | } |
279 | ||
6d703a81 | 280 | static int ide_settings_proc_show(struct seq_file *m, void *v) |
1da177e4 | 281 | { |
92f1f8fd EO |
282 | const struct ide_proc_devset *setting, *g, *d; |
283 | const struct ide_devset *ds; | |
6d703a81 AD |
284 | ide_drive_t *drive = (ide_drive_t *) m->private; |
285 | int rc, mul_factor, div_factor; | |
1da177e4 LT |
286 | |
287 | proc_ide_settings_warn(); | |
288 | ||
f9383c42 | 289 | mutex_lock(&ide_setting_mtx); |
8185d5aa BZ |
290 | g = ide_generic_settings; |
291 | d = drive->settings; | |
6d703a81 AD |
292 | seq_printf(m, "name\t\t\tvalue\t\tmin\t\tmax\t\tmode\n"); |
293 | seq_printf(m, "----\t\t\t-----\t\t---\t\t---\t\t----\n"); | |
92f1f8fd | 294 | while (g->name || (d && d->name)) { |
8185d5aa | 295 | /* read settings in the alphabetical order */ |
92f1f8fd EO |
296 | if (g->name && d && d->name) { |
297 | if (strcmp(d->name, g->name) < 0) | |
298 | setting = d++; | |
8185d5aa | 299 | else |
92f1f8fd EO |
300 | setting = g++; |
301 | } else if (d && d->name) { | |
302 | setting = d++; | |
8185d5aa | 303 | } else |
92f1f8fd | 304 | setting = g++; |
8185d5aa BZ |
305 | mul_factor = setting->mulf ? setting->mulf(drive) : 1; |
306 | div_factor = setting->divf ? setting->divf(drive) : 1; | |
6d703a81 | 307 | seq_printf(m, "%-24s", setting->name); |
441e92da PC |
308 | rc = ide_read_setting(drive, setting); |
309 | if (rc >= 0) | |
6d703a81 | 310 | seq_printf(m, "%-16d", rc * mul_factor / div_factor); |
1da177e4 | 311 | else |
6d703a81 AD |
312 | seq_printf(m, "%-16s", "write-only"); |
313 | seq_printf(m, "%-16d%-16d", (setting->min * mul_factor + div_factor - 1) / div_factor, setting->max * mul_factor / div_factor); | |
92f1f8fd EO |
314 | ds = setting->setting; |
315 | if (ds->get) | |
6d703a81 | 316 | seq_printf(m, "r"); |
92f1f8fd | 317 | if (ds->set) |
6d703a81 AD |
318 | seq_printf(m, "w"); |
319 | seq_printf(m, "\n"); | |
1da177e4 | 320 | } |
f9383c42 | 321 | mutex_unlock(&ide_setting_mtx); |
6d703a81 AD |
322 | return 0; |
323 | } | |
324 | ||
325 | static int ide_settings_proc_open(struct inode *inode, struct file *file) | |
326 | { | |
327 | return single_open(file, ide_settings_proc_show, PDE(inode)->data); | |
1da177e4 LT |
328 | } |
329 | ||
330 | #define MAX_LEN 30 | |
331 | ||
6d703a81 AD |
332 | static ssize_t ide_settings_proc_write(struct file *file, const char __user *buffer, |
333 | size_t count, loff_t *pos) | |
1da177e4 | 334 | { |
6d703a81 | 335 | ide_drive_t *drive = (ide_drive_t *) PDE(file->f_path.dentry->d_inode)->data; |
1da177e4 | 336 | char name[MAX_LEN + 1]; |
8185d5aa | 337 | int for_real = 0, mul_factor, div_factor; |
1da177e4 | 338 | unsigned long n; |
8185d5aa | 339 | |
92f1f8fd | 340 | const struct ide_proc_devset *setting; |
1da177e4 LT |
341 | char *buf, *s; |
342 | ||
343 | if (!capable(CAP_SYS_ADMIN)) | |
344 | return -EACCES; | |
345 | ||
346 | proc_ide_settings_warn(); | |
347 | ||
348 | if (count >= PAGE_SIZE) | |
349 | return -EINVAL; | |
350 | ||
351 | s = buf = (char *)__get_free_page(GFP_USER); | |
352 | if (!buf) | |
353 | return -ENOMEM; | |
354 | ||
355 | if (copy_from_user(buf, buffer, count)) { | |
356 | free_page((unsigned long)buf); | |
357 | return -EFAULT; | |
358 | } | |
359 | ||
360 | buf[count] = '\0'; | |
361 | ||
362 | /* | |
363 | * Skip over leading whitespace | |
364 | */ | |
365 | while (count && isspace(*s)) { | |
366 | --count; | |
367 | ++s; | |
368 | } | |
369 | /* | |
370 | * Do one full pass to verify all parameters, | |
371 | * then do another to actually write the new settings. | |
372 | */ | |
373 | do { | |
374 | char *p = s; | |
375 | n = count; | |
376 | while (n > 0) { | |
377 | unsigned val; | |
378 | char *q = p; | |
379 | ||
380 | while (n > 0 && *p != ':') { | |
381 | --n; | |
382 | p++; | |
383 | } | |
384 | if (*p != ':') | |
385 | goto parse_error; | |
386 | if (p - q > MAX_LEN) | |
387 | goto parse_error; | |
388 | memcpy(name, q, p - q); | |
389 | name[p - q] = 0; | |
390 | ||
391 | if (n > 0) { | |
392 | --n; | |
393 | p++; | |
394 | } else | |
395 | goto parse_error; | |
396 | ||
397 | val = simple_strtoul(p, &q, 10); | |
398 | n -= q - p; | |
399 | p = q; | |
400 | if (n > 0 && !isspace(*p)) | |
401 | goto parse_error; | |
402 | while (n > 0 && isspace(*p)) { | |
403 | --n; | |
404 | ++p; | |
405 | } | |
406 | ||
f9383c42 | 407 | mutex_lock(&ide_setting_mtx); |
8185d5aa BZ |
408 | /* generic settings first, then driver specific ones */ |
409 | setting = ide_find_setting(ide_generic_settings, name); | |
441e92da | 410 | if (!setting) { |
8185d5aa BZ |
411 | if (drive->settings) |
412 | setting = ide_find_setting(drive->settings, name); | |
413 | if (!setting) { | |
414 | mutex_unlock(&ide_setting_mtx); | |
415 | goto parse_error; | |
416 | } | |
417 | } | |
418 | if (for_real) { | |
419 | mul_factor = setting->mulf ? setting->mulf(drive) : 1; | |
420 | div_factor = setting->divf ? setting->divf(drive) : 1; | |
421 | ide_write_setting(drive, setting, val * div_factor / mul_factor); | |
1da177e4 | 422 | } |
f9383c42 | 423 | mutex_unlock(&ide_setting_mtx); |
1da177e4 LT |
424 | } |
425 | } while (!for_real++); | |
426 | free_page((unsigned long)buf); | |
427 | return count; | |
428 | parse_error: | |
429 | free_page((unsigned long)buf); | |
6d703a81 | 430 | printk("%s(): parse error\n", __func__); |
1da177e4 LT |
431 | return -EINVAL; |
432 | } | |
433 | ||
6d703a81 AD |
434 | static const struct file_operations ide_settings_proc_fops = { |
435 | .owner = THIS_MODULE, | |
436 | .open = ide_settings_proc_open, | |
437 | .read = seq_read, | |
438 | .llseek = seq_lseek, | |
439 | .release = single_release, | |
440 | .write = ide_settings_proc_write, | |
441 | }; | |
442 | ||
443 | static int ide_capacity_proc_show(struct seq_file *m, void *v) | |
1da177e4 | 444 | { |
6d703a81 AD |
445 | seq_printf(m, "%llu\n", (long long)0x7fffffff); |
446 | return 0; | |
1da177e4 LT |
447 | } |
448 | ||
6d703a81 AD |
449 | static int ide_capacity_proc_open(struct inode *inode, struct file *file) |
450 | { | |
451 | return single_open(file, ide_capacity_proc_show, NULL); | |
452 | } | |
453 | ||
454 | const struct file_operations ide_capacity_proc_fops = { | |
455 | .owner = THIS_MODULE, | |
456 | .open = ide_capacity_proc_open, | |
457 | .read = seq_read, | |
458 | .llseek = seq_lseek, | |
459 | .release = single_release, | |
460 | }; | |
461 | EXPORT_SYMBOL_GPL(ide_capacity_proc_fops); | |
1da177e4 | 462 | |
6d703a81 | 463 | static int ide_geometry_proc_show(struct seq_file *m, void *v) |
1da177e4 | 464 | { |
6d703a81 | 465 | ide_drive_t *drive = (ide_drive_t *) m->private; |
1da177e4 | 466 | |
6d703a81 | 467 | seq_printf(m, "physical %d/%d/%d\n", |
1da177e4 | 468 | drive->cyl, drive->head, drive->sect); |
6d703a81 | 469 | seq_printf(m, "logical %d/%d/%d\n", |
1da177e4 | 470 | drive->bios_cyl, drive->bios_head, drive->bios_sect); |
6d703a81 AD |
471 | return 0; |
472 | } | |
1da177e4 | 473 | |
6d703a81 AD |
474 | static int ide_geometry_proc_open(struct inode *inode, struct file *file) |
475 | { | |
476 | return single_open(file, ide_geometry_proc_show, PDE(inode)->data); | |
1da177e4 LT |
477 | } |
478 | ||
6d703a81 AD |
479 | const struct file_operations ide_geometry_proc_fops = { |
480 | .owner = THIS_MODULE, | |
481 | .open = ide_geometry_proc_open, | |
482 | .read = seq_read, | |
483 | .llseek = seq_lseek, | |
484 | .release = single_release, | |
485 | }; | |
486 | EXPORT_SYMBOL(ide_geometry_proc_fops); | |
1da177e4 | 487 | |
6d703a81 | 488 | static int ide_dmodel_proc_show(struct seq_file *seq, void *v) |
1da177e4 | 489 | { |
6d703a81 | 490 | ide_drive_t *drive = (ide_drive_t *) seq->private; |
4dde4492 | 491 | char *m = (char *)&drive->id[ATA_ID_PROD]; |
1da177e4 | 492 | |
6d703a81 AD |
493 | seq_printf(seq, "%.40s\n", m[0] ? m : "(none)"); |
494 | return 0; | |
1da177e4 LT |
495 | } |
496 | ||
6d703a81 | 497 | static int ide_dmodel_proc_open(struct inode *inode, struct file *file) |
1da177e4 | 498 | { |
6d703a81 AD |
499 | return single_open(file, ide_dmodel_proc_show, PDE(inode)->data); |
500 | } | |
501 | ||
502 | static const struct file_operations ide_dmodel_proc_fops = { | |
503 | .owner = THIS_MODULE, | |
504 | .open = ide_dmodel_proc_open, | |
505 | .read = seq_read, | |
506 | .llseek = seq_lseek, | |
507 | .release = single_release, | |
508 | }; | |
509 | ||
510 | static int ide_driver_proc_show(struct seq_file *m, void *v) | |
511 | { | |
512 | ide_drive_t *drive = (ide_drive_t *)m->private; | |
7f3c868b BZ |
513 | struct device *dev = &drive->gendev; |
514 | struct ide_driver *ide_drv; | |
1da177e4 | 515 | |
8604affd | 516 | if (dev->driver) { |
7f3c868b | 517 | ide_drv = to_ide_driver(dev->driver); |
6d703a81 | 518 | seq_printf(m, "%s version %s\n", |
8604affd | 519 | dev->driver->name, ide_drv->version); |
1da177e4 | 520 | } else |
6d703a81 AD |
521 | seq_printf(m, "ide-default version 0.9.newide\n"); |
522 | return 0; | |
523 | } | |
524 | ||
525 | static int ide_driver_proc_open(struct inode *inode, struct file *file) | |
526 | { | |
527 | return single_open(file, ide_driver_proc_show, PDE(inode)->data); | |
1da177e4 LT |
528 | } |
529 | ||
8604affd BZ |
530 | static int ide_replace_subdriver(ide_drive_t *drive, const char *driver) |
531 | { | |
532 | struct device *dev = &drive->gendev; | |
533 | int ret = 1; | |
349ae23f | 534 | int err; |
8604affd | 535 | |
8604affd BZ |
536 | device_release_driver(dev); |
537 | /* FIXME: device can still be in use by previous driver */ | |
538 | strlcpy(drive->driver_req, driver, sizeof(drive->driver_req)); | |
349ae23f RD |
539 | err = device_attach(dev); |
540 | if (err < 0) | |
541 | printk(KERN_WARNING "IDE: %s: device_attach error: %d\n", | |
eb63963a | 542 | __func__, err); |
8604affd | 543 | drive->driver_req[0] = 0; |
349ae23f RD |
544 | if (dev->driver == NULL) { |
545 | err = device_attach(dev); | |
546 | if (err < 0) | |
547 | printk(KERN_WARNING | |
548 | "IDE: %s: device_attach(2) error: %d\n", | |
eb63963a | 549 | __func__, err); |
349ae23f | 550 | } |
8604affd BZ |
551 | if (dev->driver && !strcmp(dev->driver->name, driver)) |
552 | ret = 0; | |
8604affd BZ |
553 | |
554 | return ret; | |
555 | } | |
556 | ||
6d703a81 AD |
557 | static ssize_t ide_driver_proc_write(struct file *file, const char __user *buffer, |
558 | size_t count, loff_t *pos) | |
1da177e4 | 559 | { |
6d703a81 | 560 | ide_drive_t *drive = (ide_drive_t *) PDE(file->f_path.dentry->d_inode)->data; |
1da177e4 LT |
561 | char name[32]; |
562 | ||
563 | if (!capable(CAP_SYS_ADMIN)) | |
564 | return -EACCES; | |
565 | if (count > 31) | |
566 | count = 31; | |
567 | if (copy_from_user(name, buffer, count)) | |
568 | return -EFAULT; | |
569 | name[count] = '\0'; | |
570 | if (ide_replace_subdriver(drive, name)) | |
571 | return -EINVAL; | |
572 | return count; | |
573 | } | |
574 | ||
6d703a81 AD |
575 | static const struct file_operations ide_driver_proc_fops = { |
576 | .owner = THIS_MODULE, | |
577 | .open = ide_driver_proc_open, | |
578 | .read = seq_read, | |
579 | .llseek = seq_lseek, | |
580 | .release = single_release, | |
581 | .write = ide_driver_proc_write, | |
582 | }; | |
583 | ||
584 | static int ide_media_proc_show(struct seq_file *m, void *v) | |
1da177e4 | 585 | { |
6d703a81 | 586 | ide_drive_t *drive = (ide_drive_t *) m->private; |
1da177e4 | 587 | const char *media; |
1da177e4 LT |
588 | |
589 | switch (drive->media) { | |
441e92da PC |
590 | case ide_disk: media = "disk\n"; break; |
591 | case ide_cdrom: media = "cdrom\n"; break; | |
592 | case ide_tape: media = "tape\n"; break; | |
593 | case ide_floppy: media = "floppy\n"; break; | |
594 | case ide_optical: media = "optical\n"; break; | |
595 | default: media = "UNKNOWN\n"; break; | |
1da177e4 | 596 | } |
6d703a81 AD |
597 | seq_puts(m, media); |
598 | return 0; | |
599 | } | |
600 | ||
601 | static int ide_media_proc_open(struct inode *inode, struct file *file) | |
602 | { | |
603 | return single_open(file, ide_media_proc_show, PDE(inode)->data); | |
1da177e4 LT |
604 | } |
605 | ||
6d703a81 AD |
606 | static const struct file_operations ide_media_proc_fops = { |
607 | .owner = THIS_MODULE, | |
608 | .open = ide_media_proc_open, | |
609 | .read = seq_read, | |
610 | .llseek = seq_lseek, | |
611 | .release = single_release, | |
612 | }; | |
613 | ||
1da177e4 | 614 | static ide_proc_entry_t generic_drive_entries[] = { |
6d703a81 AD |
615 | { "driver", S_IFREG|S_IRUGO, &ide_driver_proc_fops }, |
616 | { "identify", S_IFREG|S_IRUSR, &ide_identify_proc_fops}, | |
617 | { "media", S_IFREG|S_IRUGO, &ide_media_proc_fops }, | |
618 | { "model", S_IFREG|S_IRUGO, &ide_dmodel_proc_fops }, | |
619 | { "settings", S_IFREG|S_IRUSR|S_IWUSR, &ide_settings_proc_fops}, | |
620 | {} | |
1da177e4 LT |
621 | }; |
622 | ||
7662d046 | 623 | static void ide_add_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p, void *data) |
1da177e4 LT |
624 | { |
625 | struct proc_dir_entry *ent; | |
626 | ||
627 | if (!dir || !p) | |
628 | return; | |
629 | while (p->name != NULL) { | |
6d703a81 | 630 | ent = proc_create_data(p->name, p->mode, dir, p->proc_fops, data); |
1da177e4 | 631 | if (!ent) return; |
1da177e4 LT |
632 | p++; |
633 | } | |
634 | } | |
635 | ||
7662d046 | 636 | static void ide_remove_proc_entries(struct proc_dir_entry *dir, ide_proc_entry_t *p) |
1da177e4 LT |
637 | { |
638 | if (!dir || !p) | |
639 | return; | |
640 | while (p->name != NULL) { | |
641 | remove_proc_entry(p->name, dir); | |
642 | p++; | |
643 | } | |
644 | } | |
645 | ||
7f3c868b | 646 | void ide_proc_register_driver(ide_drive_t *drive, struct ide_driver *driver) |
7662d046 | 647 | { |
8185d5aa | 648 | mutex_lock(&ide_setting_mtx); |
79cb3803 | 649 | drive->settings = driver->proc_devsets(drive); |
8185d5aa BZ |
650 | mutex_unlock(&ide_setting_mtx); |
651 | ||
79cb3803 | 652 | ide_add_proc_entries(drive->proc, driver->proc_entries(drive), drive); |
7662d046 BZ |
653 | } |
654 | ||
655 | EXPORT_SYMBOL(ide_proc_register_driver); | |
656 | ||
657 | /** | |
658 | * ide_proc_unregister_driver - remove driver specific data | |
659 | * @drive: drive | |
660 | * @driver: driver | |
661 | * | |
662 | * Clean up the driver specific /proc files and IDE settings | |
663 | * for a given drive. | |
664 | * | |
1f473e9c | 665 | * Takes ide_setting_mtx. |
7662d046 BZ |
666 | */ |
667 | ||
7f3c868b | 668 | void ide_proc_unregister_driver(ide_drive_t *drive, struct ide_driver *driver) |
7662d046 | 669 | { |
79cb3803 | 670 | ide_remove_proc_entries(drive->proc, driver->proc_entries(drive)); |
7662d046 | 671 | |
f9383c42 | 672 | mutex_lock(&ide_setting_mtx); |
7662d046 | 673 | /* |
1f473e9c BZ |
674 | * ide_setting_mtx protects both the settings list and the use |
675 | * of settings (we cannot take a setting out that is being used). | |
7662d046 | 676 | */ |
8185d5aa | 677 | drive->settings = NULL; |
f9383c42 | 678 | mutex_unlock(&ide_setting_mtx); |
7662d046 | 679 | } |
7662d046 BZ |
680 | EXPORT_SYMBOL(ide_proc_unregister_driver); |
681 | ||
d9270a3f | 682 | void ide_proc_port_register_devices(ide_hwif_t *hwif) |
1da177e4 | 683 | { |
1da177e4 LT |
684 | struct proc_dir_entry *ent; |
685 | struct proc_dir_entry *parent = hwif->proc; | |
2bd24a1c | 686 | ide_drive_t *drive; |
1da177e4 | 687 | char name[64]; |
2bd24a1c | 688 | int i; |
1da177e4 | 689 | |
2bd24a1c | 690 | ide_port_for_each_dev(i, drive, hwif) { |
1902a253 | 691 | if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0) |
1da177e4 LT |
692 | continue; |
693 | ||
694 | drive->proc = proc_mkdir(drive->name, parent); | |
695 | if (drive->proc) | |
696 | ide_add_proc_entries(drive->proc, generic_drive_entries, drive); | |
441e92da | 697 | sprintf(name, "ide%d/%s", (drive->name[2]-'a')/2, drive->name); |
1da177e4 LT |
698 | ent = proc_symlink(drive->name, proc_ide_root, name); |
699 | if (!ent) return; | |
700 | } | |
701 | } | |
702 | ||
5b0c4b30 | 703 | void ide_proc_unregister_device(ide_drive_t *drive) |
1da177e4 LT |
704 | { |
705 | if (drive->proc) { | |
706 | ide_remove_proc_entries(drive->proc, generic_drive_entries); | |
707 | remove_proc_entry(drive->name, proc_ide_root); | |
5b0c4b30 | 708 | remove_proc_entry(drive->name, drive->hwif->proc); |
1da177e4 LT |
709 | drive->proc = NULL; |
710 | } | |
711 | } | |
712 | ||
1da177e4 | 713 | static ide_proc_entry_t hwif_entries[] = { |
6d703a81 AD |
714 | { "channel", S_IFREG|S_IRUGO, &ide_channel_proc_fops }, |
715 | { "mate", S_IFREG|S_IRUGO, &ide_mate_proc_fops }, | |
716 | { "model", S_IFREG|S_IRUGO, &ide_imodel_proc_fops }, | |
717 | {} | |
1da177e4 LT |
718 | }; |
719 | ||
5cbf79cd | 720 | void ide_proc_register_port(ide_hwif_t *hwif) |
1da177e4 | 721 | { |
5cbf79cd BZ |
722 | if (!hwif->proc) { |
723 | hwif->proc = proc_mkdir(hwif->name, proc_ide_root); | |
1da177e4 | 724 | |
5cbf79cd BZ |
725 | if (!hwif->proc) |
726 | return; | |
727 | ||
728 | ide_add_proc_entries(hwif->proc, hwif_entries, hwif); | |
1da177e4 LT |
729 | } |
730 | } | |
731 | ||
5cbf79cd | 732 | void ide_proc_unregister_port(ide_hwif_t *hwif) |
1da177e4 LT |
733 | { |
734 | if (hwif->proc) { | |
1da177e4 LT |
735 | ide_remove_proc_entries(hwif->proc, hwif_entries); |
736 | remove_proc_entry(hwif->name, proc_ide_root); | |
737 | hwif->proc = NULL; | |
738 | } | |
739 | } | |
740 | ||
8604affd BZ |
741 | static int proc_print_driver(struct device_driver *drv, void *data) |
742 | { | |
7f3c868b | 743 | struct ide_driver *ide_drv = to_ide_driver(drv); |
8604affd BZ |
744 | struct seq_file *s = data; |
745 | ||
746 | seq_printf(s, "%s version %s\n", drv->name, ide_drv->version); | |
747 | ||
748 | return 0; | |
749 | } | |
750 | ||
751 | static int ide_drivers_show(struct seq_file *s, void *p) | |
752 | { | |
349ae23f RD |
753 | int err; |
754 | ||
755 | err = bus_for_each_drv(&ide_bus_type, NULL, s, proc_print_driver); | |
756 | if (err < 0) | |
757 | printk(KERN_WARNING "IDE: %s: bus_for_each_drv error: %d\n", | |
eb63963a | 758 | __func__, err); |
8604affd BZ |
759 | return 0; |
760 | } | |
761 | ||
1da177e4 LT |
762 | static int ide_drivers_open(struct inode *inode, struct file *file) |
763 | { | |
8604affd | 764 | return single_open(file, &ide_drivers_show, NULL); |
1da177e4 | 765 | } |
8604affd | 766 | |
2b8693c0 | 767 | static const struct file_operations ide_drivers_operations = { |
c7705f34 | 768 | .owner = THIS_MODULE, |
1da177e4 LT |
769 | .open = ide_drivers_open, |
770 | .read = seq_read, | |
771 | .llseek = seq_lseek, | |
8604affd | 772 | .release = single_release, |
1da177e4 LT |
773 | }; |
774 | ||
775 | void proc_ide_create(void) | |
776 | { | |
5cbf79cd BZ |
777 | proc_ide_root = proc_mkdir("ide", NULL); |
778 | ||
1da177e4 LT |
779 | if (!proc_ide_root) |
780 | return; | |
781 | ||
c7705f34 | 782 | proc_create("drivers", 0, proc_ide_root, &ide_drivers_operations); |
1da177e4 LT |
783 | } |
784 | ||
785 | void proc_ide_destroy(void) | |
786 | { | |
643bdc6f | 787 | remove_proc_entry("drivers", proc_ide_root); |
1da177e4 LT |
788 | remove_proc_entry("ide", NULL); |
789 | } |