Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * IBM ASM Service Processor Device Driver | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
17 | * | |
18 | * Copyright (C) IBM Corporation, 2004 | |
19 | * | |
d36b6910 | 20 | * Author: Max Asböck <amax@us.ibm.com> |
1da177e4 LT |
21 | * |
22 | */ | |
23 | ||
24 | /* | |
3110dc7a | 25 | * Parts of this code are based on an article by Jonathan Corbet |
1da177e4 LT |
26 | * that appeared in Linux Weekly News. |
27 | */ | |
28 | ||
29 | ||
30 | /* | |
31 | * The IBMASM file virtual filesystem. It creates the following hierarchy | |
5ecd602e | 32 | * dynamically when mounted from user space: |
1da177e4 LT |
33 | * |
34 | * /ibmasm | |
35 | * |-- 0 | |
36 | * | |-- command | |
37 | * | |-- event | |
38 | * | |-- reverse_heartbeat | |
39 | * | `-- remote_video | |
1da177e4 | 40 | * | |-- depth |
1da177e4 LT |
41 | * | |-- height |
42 | * | `-- width | |
43 | * . | |
44 | * . | |
45 | * . | |
46 | * `-- n | |
47 | * |-- command | |
48 | * |-- event | |
49 | * |-- reverse_heartbeat | |
50 | * `-- remote_video | |
1da177e4 | 51 | * |-- depth |
1da177e4 LT |
52 | * |-- height |
53 | * `-- width | |
54 | * | |
55 | * For each service processor the following files are created: | |
56 | * | |
57 | * command: execute dot commands | |
3110dc7a DT |
58 | * write: execute a dot command on the service processor |
59 | * read: return the result of a previously executed dot command | |
1da177e4 LT |
60 | * |
61 | * events: listen for service processor events | |
3110dc7a | 62 | * read: sleep (interruptible) until an event occurs |
1da177e4 LT |
63 | * write: wakeup sleeping event listener |
64 | * | |
65 | * reverse_heartbeat: send a heartbeat to the service processor | |
3110dc7a | 66 | * read: sleep (interruptible) until the reverse heartbeat fails |
1da177e4 LT |
67 | * write: wakeup sleeping heartbeat listener |
68 | * | |
69 | * remote_video/width | |
70 | * remote_video/height | |
71 | * remote_video/width: control remote display settings | |
3110dc7a DT |
72 | * write: set value |
73 | * read: read value | |
1da177e4 LT |
74 | */ |
75 | ||
76 | #include <linux/fs.h> | |
77 | #include <linux/pagemap.h> | |
5a0e3ad6 | 78 | #include <linux/slab.h> |
1da177e4 LT |
79 | #include <asm/uaccess.h> |
80 | #include <asm/io.h> | |
81 | #include "ibmasm.h" | |
82 | #include "remote.h" | |
83 | #include "dot_command.h" | |
84 | ||
85 | #define IBMASMFS_MAGIC 0x66726f67 | |
86 | ||
87 | static LIST_HEAD(service_processors); | |
88 | ||
89 | static struct inode *ibmasmfs_make_inode(struct super_block *sb, int mode); | |
318ceed0 | 90 | static void ibmasmfs_create_files (struct super_block *sb); |
1da177e4 LT |
91 | static int ibmasmfs_fill_super (struct super_block *sb, void *data, int silent); |
92 | ||
93 | ||
fc14f2fe AV |
94 | static struct dentry *ibmasmfs_mount(struct file_system_type *fst, |
95 | int flags, const char *name, void *data) | |
1da177e4 | 96 | { |
fc14f2fe | 97 | return mount_single(fst, flags, data, ibmasmfs_fill_super); |
1da177e4 LT |
98 | } |
99 | ||
b87221de | 100 | static const struct super_operations ibmasmfs_s_ops = { |
1da177e4 LT |
101 | .statfs = simple_statfs, |
102 | .drop_inode = generic_delete_inode, | |
103 | }; | |
104 | ||
4b6f5d20 | 105 | static const struct file_operations *ibmasmfs_dir_ops = &simple_dir_operations; |
1da177e4 LT |
106 | |
107 | static struct file_system_type ibmasmfs_type = { | |
108 | .owner = THIS_MODULE, | |
109 | .name = "ibmasmfs", | |
fc14f2fe | 110 | .mount = ibmasmfs_mount, |
1da177e4 LT |
111 | .kill_sb = kill_litter_super, |
112 | }; | |
113 | ||
114 | static int ibmasmfs_fill_super (struct super_block *sb, void *data, int silent) | |
115 | { | |
116 | struct inode *root; | |
1da177e4 LT |
117 | |
118 | sb->s_blocksize = PAGE_CACHE_SIZE; | |
119 | sb->s_blocksize_bits = PAGE_CACHE_SHIFT; | |
120 | sb->s_magic = IBMASMFS_MAGIC; | |
121 | sb->s_op = &ibmasmfs_s_ops; | |
122 | sb->s_time_gran = 1; | |
123 | ||
124 | root = ibmasmfs_make_inode (sb, S_IFDIR | 0500); | |
125 | if (!root) | |
126 | return -ENOMEM; | |
127 | ||
128 | root->i_op = &simple_dir_inode_operations; | |
129 | root->i_fop = ibmasmfs_dir_ops; | |
130 | ||
318ceed0 AV |
131 | sb->s_root = d_make_root(root); |
132 | if (!sb->s_root) | |
1da177e4 | 133 | return -ENOMEM; |
1da177e4 | 134 | |
318ceed0 | 135 | ibmasmfs_create_files(sb); |
1da177e4 LT |
136 | return 0; |
137 | } | |
138 | ||
139 | static struct inode *ibmasmfs_make_inode(struct super_block *sb, int mode) | |
140 | { | |
141 | struct inode *ret = new_inode(sb); | |
142 | ||
143 | if (ret) { | |
85fe4025 | 144 | ret->i_ino = get_next_ino(); |
1da177e4 | 145 | ret->i_mode = mode; |
1da177e4 LT |
146 | ret->i_atime = ret->i_mtime = ret->i_ctime = CURRENT_TIME; |
147 | } | |
148 | return ret; | |
149 | } | |
150 | ||
151 | static struct dentry *ibmasmfs_create_file (struct super_block *sb, | |
152 | struct dentry *parent, | |
3110dc7a | 153 | const char *name, |
d54b1fdb | 154 | const struct file_operations *fops, |
1da177e4 LT |
155 | void *data, |
156 | int mode) | |
157 | { | |
158 | struct dentry *dentry; | |
159 | struct inode *inode; | |
160 | ||
161 | dentry = d_alloc_name(parent, name); | |
162 | if (!dentry) | |
163 | return NULL; | |
164 | ||
165 | inode = ibmasmfs_make_inode(sb, S_IFREG | mode); | |
166 | if (!inode) { | |
167 | dput(dentry); | |
168 | return NULL; | |
169 | } | |
170 | ||
171 | inode->i_fop = fops; | |
8e18e294 | 172 | inode->i_private = data; |
1da177e4 LT |
173 | |
174 | d_add(dentry, inode); | |
175 | return dentry; | |
176 | } | |
177 | ||
178 | static struct dentry *ibmasmfs_create_dir (struct super_block *sb, | |
179 | struct dentry *parent, | |
180 | const char *name) | |
181 | { | |
182 | struct dentry *dentry; | |
183 | struct inode *inode; | |
184 | ||
185 | dentry = d_alloc_name(parent, name); | |
186 | if (!dentry) | |
187 | return NULL; | |
188 | ||
189 | inode = ibmasmfs_make_inode(sb, S_IFDIR | 0500); | |
190 | if (!inode) { | |
191 | dput(dentry); | |
192 | return NULL; | |
193 | } | |
194 | ||
195 | inode->i_op = &simple_dir_inode_operations; | |
196 | inode->i_fop = ibmasmfs_dir_ops; | |
197 | ||
198 | d_add(dentry, inode); | |
199 | return dentry; | |
200 | } | |
201 | ||
202 | int ibmasmfs_register(void) | |
203 | { | |
204 | return register_filesystem(&ibmasmfs_type); | |
205 | } | |
206 | ||
207 | void ibmasmfs_unregister(void) | |
208 | { | |
209 | unregister_filesystem(&ibmasmfs_type); | |
210 | } | |
211 | ||
212 | void ibmasmfs_add_sp(struct service_processor *sp) | |
213 | { | |
214 | list_add(&sp->node, &service_processors); | |
215 | } | |
216 | ||
217 | /* struct to save state between command file operations */ | |
218 | struct ibmasmfs_command_data { | |
219 | struct service_processor *sp; | |
220 | struct command *command; | |
221 | }; | |
222 | ||
223 | /* struct to save state between event file operations */ | |
224 | struct ibmasmfs_event_data { | |
225 | struct service_processor *sp; | |
226 | struct event_reader reader; | |
227 | int active; | |
228 | }; | |
229 | ||
230 | /* struct to save state between reverse heartbeat file operations */ | |
231 | struct ibmasmfs_heartbeat_data { | |
232 | struct service_processor *sp; | |
233 | struct reverse_heartbeat heartbeat; | |
234 | int active; | |
235 | }; | |
236 | ||
237 | static int command_file_open(struct inode *inode, struct file *file) | |
238 | { | |
239 | struct ibmasmfs_command_data *command_data; | |
240 | ||
8e18e294 | 241 | if (!inode->i_private) |
1da177e4 LT |
242 | return -ENODEV; |
243 | ||
244 | command_data = kmalloc(sizeof(struct ibmasmfs_command_data), GFP_KERNEL); | |
245 | if (!command_data) | |
246 | return -ENOMEM; | |
247 | ||
248 | command_data->command = NULL; | |
8e18e294 | 249 | command_data->sp = inode->i_private; |
1da177e4 LT |
250 | file->private_data = command_data; |
251 | return 0; | |
252 | } | |
253 | ||
254 | static int command_file_close(struct inode *inode, struct file *file) | |
255 | { | |
256 | struct ibmasmfs_command_data *command_data = file->private_data; | |
257 | ||
258 | if (command_data->command) | |
3110dc7a | 259 | command_put(command_data->command); |
1da177e4 LT |
260 | |
261 | kfree(command_data); | |
262 | return 0; | |
263 | } | |
264 | ||
265 | static ssize_t command_file_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
266 | { | |
267 | struct ibmasmfs_command_data *command_data = file->private_data; | |
268 | struct command *cmd; | |
269 | int len; | |
270 | unsigned long flags; | |
271 | ||
272 | if (*offset < 0) | |
273 | return -EINVAL; | |
274 | if (count == 0 || count > IBMASM_CMD_MAX_BUFFER_SIZE) | |
275 | return 0; | |
276 | if (*offset != 0) | |
277 | return 0; | |
278 | ||
279 | spin_lock_irqsave(&command_data->sp->lock, flags); | |
280 | cmd = command_data->command; | |
281 | if (cmd == NULL) { | |
282 | spin_unlock_irqrestore(&command_data->sp->lock, flags); | |
283 | return 0; | |
284 | } | |
285 | command_data->command = NULL; | |
286 | spin_unlock_irqrestore(&command_data->sp->lock, flags); | |
287 | ||
288 | if (cmd->status != IBMASM_CMD_COMPLETE) { | |
289 | command_put(cmd); | |
290 | return -EIO; | |
291 | } | |
292 | len = min(count, cmd->buffer_size); | |
293 | if (copy_to_user(buf, cmd->buffer, len)) { | |
294 | command_put(cmd); | |
295 | return -EFAULT; | |
296 | } | |
297 | command_put(cmd); | |
298 | ||
299 | return len; | |
300 | } | |
301 | ||
302 | static ssize_t command_file_write(struct file *file, const char __user *ubuff, size_t count, loff_t *offset) | |
303 | { | |
304 | struct ibmasmfs_command_data *command_data = file->private_data; | |
305 | struct command *cmd; | |
306 | unsigned long flags; | |
307 | ||
308 | if (*offset < 0) | |
309 | return -EINVAL; | |
310 | if (count == 0 || count > IBMASM_CMD_MAX_BUFFER_SIZE) | |
311 | return 0; | |
312 | if (*offset != 0) | |
313 | return 0; | |
314 | ||
315 | /* commands are executed sequentially, only one command at a time */ | |
316 | if (command_data->command) | |
317 | return -EAGAIN; | |
318 | ||
88187605 | 319 | cmd = ibmasm_new_command(command_data->sp, count); |
1da177e4 LT |
320 | if (!cmd) |
321 | return -ENOMEM; | |
322 | ||
323 | if (copy_from_user(cmd->buffer, ubuff, count)) { | |
324 | command_put(cmd); | |
325 | return -EFAULT; | |
326 | } | |
327 | ||
328 | spin_lock_irqsave(&command_data->sp->lock, flags); | |
329 | if (command_data->command) { | |
330 | spin_unlock_irqrestore(&command_data->sp->lock, flags); | |
331 | command_put(cmd); | |
332 | return -EAGAIN; | |
333 | } | |
334 | command_data->command = cmd; | |
335 | spin_unlock_irqrestore(&command_data->sp->lock, flags); | |
336 | ||
337 | ibmasm_exec_command(command_data->sp, cmd); | |
338 | ibmasm_wait_for_response(cmd, get_dot_command_timeout(cmd->buffer)); | |
339 | ||
340 | return count; | |
341 | } | |
342 | ||
343 | static int event_file_open(struct inode *inode, struct file *file) | |
344 | { | |
345 | struct ibmasmfs_event_data *event_data; | |
3110dc7a | 346 | struct service_processor *sp; |
1da177e4 | 347 | |
8e18e294 | 348 | if (!inode->i_private) |
1da177e4 LT |
349 | return -ENODEV; |
350 | ||
8e18e294 | 351 | sp = inode->i_private; |
1da177e4 LT |
352 | |
353 | event_data = kmalloc(sizeof(struct ibmasmfs_event_data), GFP_KERNEL); | |
354 | if (!event_data) | |
355 | return -ENOMEM; | |
356 | ||
357 | ibmasm_event_reader_register(sp, &event_data->reader); | |
358 | ||
359 | event_data->sp = sp; | |
b8acb808 | 360 | event_data->active = 0; |
1da177e4 LT |
361 | file->private_data = event_data; |
362 | return 0; | |
363 | } | |
364 | ||
365 | static int event_file_close(struct inode *inode, struct file *file) | |
366 | { | |
367 | struct ibmasmfs_event_data *event_data = file->private_data; | |
368 | ||
369 | ibmasm_event_reader_unregister(event_data->sp, &event_data->reader); | |
370 | kfree(event_data); | |
371 | return 0; | |
372 | } | |
373 | ||
374 | static ssize_t event_file_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
375 | { | |
376 | struct ibmasmfs_event_data *event_data = file->private_data; | |
377 | struct event_reader *reader = &event_data->reader; | |
b8acb808 | 378 | struct service_processor *sp = event_data->sp; |
1da177e4 | 379 | int ret; |
b8acb808 | 380 | unsigned long flags; |
1da177e4 LT |
381 | |
382 | if (*offset < 0) | |
383 | return -EINVAL; | |
384 | if (count == 0 || count > IBMASM_EVENT_MAX_SIZE) | |
385 | return 0; | |
386 | if (*offset != 0) | |
387 | return 0; | |
388 | ||
b8acb808 MA |
389 | spin_lock_irqsave(&sp->lock, flags); |
390 | if (event_data->active) { | |
391 | spin_unlock_irqrestore(&sp->lock, flags); | |
392 | return -EBUSY; | |
393 | } | |
394 | event_data->active = 1; | |
395 | spin_unlock_irqrestore(&sp->lock, flags); | |
396 | ||
397 | ret = ibmasm_get_next_event(sp, reader); | |
1da177e4 | 398 | if (ret <= 0) |
b8acb808 | 399 | goto out; |
1da177e4 | 400 | |
b8acb808 MA |
401 | if (count < reader->data_size) { |
402 | ret = -EINVAL; | |
403 | goto out; | |
404 | } | |
1da177e4 | 405 | |
b8acb808 MA |
406 | if (copy_to_user(buf, reader->data, reader->data_size)) { |
407 | ret = -EFAULT; | |
408 | goto out; | |
409 | } | |
410 | ret = reader->data_size; | |
1da177e4 | 411 | |
b8acb808 MA |
412 | out: |
413 | event_data->active = 0; | |
414 | return ret; | |
1da177e4 LT |
415 | } |
416 | ||
417 | static ssize_t event_file_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) | |
418 | { | |
419 | struct ibmasmfs_event_data *event_data = file->private_data; | |
420 | ||
421 | if (*offset < 0) | |
422 | return -EINVAL; | |
423 | if (count != 1) | |
424 | return 0; | |
425 | if (*offset != 0) | |
426 | return 0; | |
427 | ||
b8acb808 | 428 | ibmasm_cancel_next_event(&event_data->reader); |
1da177e4 LT |
429 | return 0; |
430 | } | |
431 | ||
432 | static int r_heartbeat_file_open(struct inode *inode, struct file *file) | |
433 | { | |
434 | struct ibmasmfs_heartbeat_data *rhbeat; | |
435 | ||
8e18e294 | 436 | if (!inode->i_private) |
1da177e4 LT |
437 | return -ENODEV; |
438 | ||
439 | rhbeat = kmalloc(sizeof(struct ibmasmfs_heartbeat_data), GFP_KERNEL); | |
440 | if (!rhbeat) | |
441 | return -ENOMEM; | |
442 | ||
8e18e294 | 443 | rhbeat->sp = inode->i_private; |
1da177e4 LT |
444 | rhbeat->active = 0; |
445 | ibmasm_init_reverse_heartbeat(rhbeat->sp, &rhbeat->heartbeat); | |
446 | file->private_data = rhbeat; | |
447 | return 0; | |
448 | } | |
449 | ||
450 | static int r_heartbeat_file_close(struct inode *inode, struct file *file) | |
451 | { | |
452 | struct ibmasmfs_heartbeat_data *rhbeat = file->private_data; | |
453 | ||
454 | kfree(rhbeat); | |
455 | return 0; | |
456 | } | |
457 | ||
458 | static ssize_t r_heartbeat_file_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
459 | { | |
460 | struct ibmasmfs_heartbeat_data *rhbeat = file->private_data; | |
461 | unsigned long flags; | |
462 | int result; | |
463 | ||
464 | if (*offset < 0) | |
465 | return -EINVAL; | |
466 | if (count == 0 || count > 1024) | |
467 | return 0; | |
468 | if (*offset != 0) | |
469 | return 0; | |
470 | ||
471 | /* allow only one reverse heartbeat per process */ | |
472 | spin_lock_irqsave(&rhbeat->sp->lock, flags); | |
473 | if (rhbeat->active) { | |
474 | spin_unlock_irqrestore(&rhbeat->sp->lock, flags); | |
475 | return -EBUSY; | |
476 | } | |
477 | rhbeat->active = 1; | |
478 | spin_unlock_irqrestore(&rhbeat->sp->lock, flags); | |
479 | ||
480 | result = ibmasm_start_reverse_heartbeat(rhbeat->sp, &rhbeat->heartbeat); | |
481 | rhbeat->active = 0; | |
482 | ||
483 | return result; | |
484 | } | |
485 | ||
486 | static ssize_t r_heartbeat_file_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) | |
487 | { | |
488 | struct ibmasmfs_heartbeat_data *rhbeat = file->private_data; | |
489 | ||
490 | if (*offset < 0) | |
491 | return -EINVAL; | |
492 | if (count != 1) | |
493 | return 0; | |
494 | if (*offset != 0) | |
495 | return 0; | |
496 | ||
497 | if (rhbeat->active) | |
498 | ibmasm_stop_reverse_heartbeat(&rhbeat->heartbeat); | |
499 | ||
500 | return 1; | |
501 | } | |
502 | ||
1da177e4 LT |
503 | static int remote_settings_file_close(struct inode *inode, struct file *file) |
504 | { | |
505 | return 0; | |
506 | } | |
507 | ||
508 | static ssize_t remote_settings_file_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
509 | { | |
510 | void __iomem *address = (void __iomem *)file->private_data; | |
511 | unsigned char *page; | |
512 | int retval; | |
513 | int len = 0; | |
514 | unsigned int value; | |
515 | ||
516 | if (*offset < 0) | |
517 | return -EINVAL; | |
518 | if (count == 0 || count > 1024) | |
519 | return 0; | |
520 | if (*offset != 0) | |
521 | return 0; | |
522 | ||
523 | page = (unsigned char *)__get_free_page(GFP_KERNEL); | |
524 | if (!page) | |
525 | return -ENOMEM; | |
526 | ||
527 | value = readl(address); | |
528 | len = sprintf(page, "%d\n", value); | |
529 | ||
530 | if (copy_to_user(buf, page, len)) { | |
531 | retval = -EFAULT; | |
532 | goto exit; | |
533 | } | |
534 | *offset += len; | |
535 | retval = len; | |
536 | ||
537 | exit: | |
538 | free_page((unsigned long)page); | |
539 | return retval; | |
540 | } | |
541 | ||
542 | static ssize_t remote_settings_file_write(struct file *file, const char __user *ubuff, size_t count, loff_t *offset) | |
543 | { | |
544 | void __iomem *address = (void __iomem *)file->private_data; | |
545 | char *buff; | |
546 | unsigned int value; | |
547 | ||
548 | if (*offset < 0) | |
549 | return -EINVAL; | |
550 | if (count == 0 || count > 1024) | |
551 | return 0; | |
552 | if (*offset != 0) | |
553 | return 0; | |
554 | ||
dd00cc48 | 555 | buff = kzalloc (count + 1, GFP_KERNEL); |
1da177e4 LT |
556 | if (!buff) |
557 | return -ENOMEM; | |
558 | ||
1da177e4 LT |
559 | |
560 | if (copy_from_user(buff, ubuff, count)) { | |
561 | kfree(buff); | |
562 | return -EFAULT; | |
563 | } | |
3110dc7a | 564 | |
1da177e4 LT |
565 | value = simple_strtoul(buff, NULL, 10); |
566 | writel(value, address); | |
567 | kfree(buff); | |
568 | ||
569 | return count; | |
570 | } | |
571 | ||
d54b1fdb | 572 | static const struct file_operations command_fops = { |
1da177e4 LT |
573 | .open = command_file_open, |
574 | .release = command_file_close, | |
575 | .read = command_file_read, | |
576 | .write = command_file_write, | |
275bd41a | 577 | .llseek = generic_file_llseek, |
1da177e4 LT |
578 | }; |
579 | ||
d54b1fdb | 580 | static const struct file_operations event_fops = { |
1da177e4 LT |
581 | .open = event_file_open, |
582 | .release = event_file_close, | |
583 | .read = event_file_read, | |
584 | .write = event_file_write, | |
275bd41a | 585 | .llseek = generic_file_llseek, |
1da177e4 LT |
586 | }; |
587 | ||
d54b1fdb | 588 | static const struct file_operations r_heartbeat_fops = { |
1da177e4 LT |
589 | .open = r_heartbeat_file_open, |
590 | .release = r_heartbeat_file_close, | |
591 | .read = r_heartbeat_file_read, | |
592 | .write = r_heartbeat_file_write, | |
275bd41a | 593 | .llseek = generic_file_llseek, |
1da177e4 LT |
594 | }; |
595 | ||
d54b1fdb | 596 | static const struct file_operations remote_settings_fops = { |
234e3405 | 597 | .open = simple_open, |
1da177e4 LT |
598 | .release = remote_settings_file_close, |
599 | .read = remote_settings_file_read, | |
600 | .write = remote_settings_file_write, | |
275bd41a | 601 | .llseek = generic_file_llseek, |
1da177e4 LT |
602 | }; |
603 | ||
1da177e4 | 604 | |
318ceed0 | 605 | static void ibmasmfs_create_files (struct super_block *sb) |
1da177e4 LT |
606 | { |
607 | struct list_head *entry; | |
608 | struct service_processor *sp; | |
609 | ||
610 | list_for_each(entry, &service_processors) { | |
611 | struct dentry *dir; | |
612 | struct dentry *remote_dir; | |
613 | sp = list_entry(entry, struct service_processor, node); | |
318ceed0 | 614 | dir = ibmasmfs_create_dir(sb, sb->s_root, sp->dirname); |
1da177e4 LT |
615 | if (!dir) |
616 | continue; | |
617 | ||
618 | ibmasmfs_create_file(sb, dir, "command", &command_fops, sp, S_IRUSR|S_IWUSR); | |
619 | ibmasmfs_create_file(sb, dir, "event", &event_fops, sp, S_IRUSR|S_IWUSR); | |
620 | ibmasmfs_create_file(sb, dir, "reverse_heartbeat", &r_heartbeat_fops, sp, S_IRUSR|S_IWUSR); | |
621 | ||
622 | remote_dir = ibmasmfs_create_dir(sb, dir, "remote_video"); | |
623 | if (!remote_dir) | |
624 | continue; | |
625 | ||
626 | ibmasmfs_create_file(sb, remote_dir, "width", &remote_settings_fops, (void *)display_width(sp), S_IRUSR|S_IWUSR); | |
627 | ibmasmfs_create_file(sb, remote_dir, "height", &remote_settings_fops, (void *)display_height(sp), S_IRUSR|S_IWUSR); | |
628 | ibmasmfs_create_file(sb, remote_dir, "depth", &remote_settings_fops, (void *)display_depth(sp), S_IRUSR|S_IWUSR); | |
1da177e4 LT |
629 | } |
630 | } |