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 | }; | |
7f78e035 | 113 | MODULE_ALIAS_FS("ibmasmfs"); |
1da177e4 LT |
114 | |
115 | static int ibmasmfs_fill_super (struct super_block *sb, void *data, int silent) | |
116 | { | |
117 | struct inode *root; | |
1da177e4 LT |
118 | |
119 | sb->s_blocksize = PAGE_CACHE_SIZE; | |
120 | sb->s_blocksize_bits = PAGE_CACHE_SHIFT; | |
121 | sb->s_magic = IBMASMFS_MAGIC; | |
122 | sb->s_op = &ibmasmfs_s_ops; | |
123 | sb->s_time_gran = 1; | |
124 | ||
125 | root = ibmasmfs_make_inode (sb, S_IFDIR | 0500); | |
126 | if (!root) | |
127 | return -ENOMEM; | |
128 | ||
129 | root->i_op = &simple_dir_inode_operations; | |
130 | root->i_fop = ibmasmfs_dir_ops; | |
131 | ||
318ceed0 AV |
132 | sb->s_root = d_make_root(root); |
133 | if (!sb->s_root) | |
1da177e4 | 134 | return -ENOMEM; |
1da177e4 | 135 | |
318ceed0 | 136 | ibmasmfs_create_files(sb); |
1da177e4 LT |
137 | return 0; |
138 | } | |
139 | ||
140 | static struct inode *ibmasmfs_make_inode(struct super_block *sb, int mode) | |
141 | { | |
142 | struct inode *ret = new_inode(sb); | |
143 | ||
144 | if (ret) { | |
85fe4025 | 145 | ret->i_ino = get_next_ino(); |
1da177e4 | 146 | ret->i_mode = mode; |
1da177e4 LT |
147 | ret->i_atime = ret->i_mtime = ret->i_ctime = CURRENT_TIME; |
148 | } | |
149 | return ret; | |
150 | } | |
151 | ||
152 | static struct dentry *ibmasmfs_create_file (struct super_block *sb, | |
153 | struct dentry *parent, | |
3110dc7a | 154 | const char *name, |
d54b1fdb | 155 | const struct file_operations *fops, |
1da177e4 LT |
156 | void *data, |
157 | int mode) | |
158 | { | |
159 | struct dentry *dentry; | |
160 | struct inode *inode; | |
161 | ||
162 | dentry = d_alloc_name(parent, name); | |
163 | if (!dentry) | |
164 | return NULL; | |
165 | ||
166 | inode = ibmasmfs_make_inode(sb, S_IFREG | mode); | |
167 | if (!inode) { | |
168 | dput(dentry); | |
169 | return NULL; | |
170 | } | |
171 | ||
172 | inode->i_fop = fops; | |
8e18e294 | 173 | inode->i_private = data; |
1da177e4 LT |
174 | |
175 | d_add(dentry, inode); | |
176 | return dentry; | |
177 | } | |
178 | ||
179 | static struct dentry *ibmasmfs_create_dir (struct super_block *sb, | |
180 | struct dentry *parent, | |
181 | const char *name) | |
182 | { | |
183 | struct dentry *dentry; | |
184 | struct inode *inode; | |
185 | ||
186 | dentry = d_alloc_name(parent, name); | |
187 | if (!dentry) | |
188 | return NULL; | |
189 | ||
190 | inode = ibmasmfs_make_inode(sb, S_IFDIR | 0500); | |
191 | if (!inode) { | |
192 | dput(dentry); | |
193 | return NULL; | |
194 | } | |
195 | ||
196 | inode->i_op = &simple_dir_inode_operations; | |
197 | inode->i_fop = ibmasmfs_dir_ops; | |
198 | ||
199 | d_add(dentry, inode); | |
200 | return dentry; | |
201 | } | |
202 | ||
203 | int ibmasmfs_register(void) | |
204 | { | |
205 | return register_filesystem(&ibmasmfs_type); | |
206 | } | |
207 | ||
208 | void ibmasmfs_unregister(void) | |
209 | { | |
210 | unregister_filesystem(&ibmasmfs_type); | |
211 | } | |
212 | ||
213 | void ibmasmfs_add_sp(struct service_processor *sp) | |
214 | { | |
215 | list_add(&sp->node, &service_processors); | |
216 | } | |
217 | ||
218 | /* struct to save state between command file operations */ | |
219 | struct ibmasmfs_command_data { | |
220 | struct service_processor *sp; | |
221 | struct command *command; | |
222 | }; | |
223 | ||
224 | /* struct to save state between event file operations */ | |
225 | struct ibmasmfs_event_data { | |
226 | struct service_processor *sp; | |
227 | struct event_reader reader; | |
228 | int active; | |
229 | }; | |
230 | ||
231 | /* struct to save state between reverse heartbeat file operations */ | |
232 | struct ibmasmfs_heartbeat_data { | |
233 | struct service_processor *sp; | |
234 | struct reverse_heartbeat heartbeat; | |
235 | int active; | |
236 | }; | |
237 | ||
238 | static int command_file_open(struct inode *inode, struct file *file) | |
239 | { | |
240 | struct ibmasmfs_command_data *command_data; | |
241 | ||
8e18e294 | 242 | if (!inode->i_private) |
1da177e4 LT |
243 | return -ENODEV; |
244 | ||
245 | command_data = kmalloc(sizeof(struct ibmasmfs_command_data), GFP_KERNEL); | |
246 | if (!command_data) | |
247 | return -ENOMEM; | |
248 | ||
249 | command_data->command = NULL; | |
8e18e294 | 250 | command_data->sp = inode->i_private; |
1da177e4 LT |
251 | file->private_data = command_data; |
252 | return 0; | |
253 | } | |
254 | ||
255 | static int command_file_close(struct inode *inode, struct file *file) | |
256 | { | |
257 | struct ibmasmfs_command_data *command_data = file->private_data; | |
258 | ||
259 | if (command_data->command) | |
3110dc7a | 260 | command_put(command_data->command); |
1da177e4 LT |
261 | |
262 | kfree(command_data); | |
263 | return 0; | |
264 | } | |
265 | ||
266 | static ssize_t command_file_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
267 | { | |
268 | struct ibmasmfs_command_data *command_data = file->private_data; | |
269 | struct command *cmd; | |
270 | int len; | |
271 | unsigned long flags; | |
272 | ||
273 | if (*offset < 0) | |
274 | return -EINVAL; | |
275 | if (count == 0 || count > IBMASM_CMD_MAX_BUFFER_SIZE) | |
276 | return 0; | |
277 | if (*offset != 0) | |
278 | return 0; | |
279 | ||
280 | spin_lock_irqsave(&command_data->sp->lock, flags); | |
281 | cmd = command_data->command; | |
282 | if (cmd == NULL) { | |
283 | spin_unlock_irqrestore(&command_data->sp->lock, flags); | |
284 | return 0; | |
285 | } | |
286 | command_data->command = NULL; | |
287 | spin_unlock_irqrestore(&command_data->sp->lock, flags); | |
288 | ||
289 | if (cmd->status != IBMASM_CMD_COMPLETE) { | |
290 | command_put(cmd); | |
291 | return -EIO; | |
292 | } | |
293 | len = min(count, cmd->buffer_size); | |
294 | if (copy_to_user(buf, cmd->buffer, len)) { | |
295 | command_put(cmd); | |
296 | return -EFAULT; | |
297 | } | |
298 | command_put(cmd); | |
299 | ||
300 | return len; | |
301 | } | |
302 | ||
303 | static ssize_t command_file_write(struct file *file, const char __user *ubuff, size_t count, loff_t *offset) | |
304 | { | |
305 | struct ibmasmfs_command_data *command_data = file->private_data; | |
306 | struct command *cmd; | |
307 | unsigned long flags; | |
308 | ||
309 | if (*offset < 0) | |
310 | return -EINVAL; | |
311 | if (count == 0 || count > IBMASM_CMD_MAX_BUFFER_SIZE) | |
312 | return 0; | |
313 | if (*offset != 0) | |
314 | return 0; | |
315 | ||
316 | /* commands are executed sequentially, only one command at a time */ | |
317 | if (command_data->command) | |
318 | return -EAGAIN; | |
319 | ||
88187605 | 320 | cmd = ibmasm_new_command(command_data->sp, count); |
1da177e4 LT |
321 | if (!cmd) |
322 | return -ENOMEM; | |
323 | ||
324 | if (copy_from_user(cmd->buffer, ubuff, count)) { | |
325 | command_put(cmd); | |
326 | return -EFAULT; | |
327 | } | |
328 | ||
329 | spin_lock_irqsave(&command_data->sp->lock, flags); | |
330 | if (command_data->command) { | |
331 | spin_unlock_irqrestore(&command_data->sp->lock, flags); | |
332 | command_put(cmd); | |
333 | return -EAGAIN; | |
334 | } | |
335 | command_data->command = cmd; | |
336 | spin_unlock_irqrestore(&command_data->sp->lock, flags); | |
337 | ||
338 | ibmasm_exec_command(command_data->sp, cmd); | |
339 | ibmasm_wait_for_response(cmd, get_dot_command_timeout(cmd->buffer)); | |
340 | ||
341 | return count; | |
342 | } | |
343 | ||
344 | static int event_file_open(struct inode *inode, struct file *file) | |
345 | { | |
346 | struct ibmasmfs_event_data *event_data; | |
3110dc7a | 347 | struct service_processor *sp; |
1da177e4 | 348 | |
8e18e294 | 349 | if (!inode->i_private) |
1da177e4 LT |
350 | return -ENODEV; |
351 | ||
8e18e294 | 352 | sp = inode->i_private; |
1da177e4 LT |
353 | |
354 | event_data = kmalloc(sizeof(struct ibmasmfs_event_data), GFP_KERNEL); | |
355 | if (!event_data) | |
356 | return -ENOMEM; | |
357 | ||
358 | ibmasm_event_reader_register(sp, &event_data->reader); | |
359 | ||
360 | event_data->sp = sp; | |
b8acb808 | 361 | event_data->active = 0; |
1da177e4 LT |
362 | file->private_data = event_data; |
363 | return 0; | |
364 | } | |
365 | ||
366 | static int event_file_close(struct inode *inode, struct file *file) | |
367 | { | |
368 | struct ibmasmfs_event_data *event_data = file->private_data; | |
369 | ||
370 | ibmasm_event_reader_unregister(event_data->sp, &event_data->reader); | |
371 | kfree(event_data); | |
372 | return 0; | |
373 | } | |
374 | ||
375 | static ssize_t event_file_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
376 | { | |
377 | struct ibmasmfs_event_data *event_data = file->private_data; | |
378 | struct event_reader *reader = &event_data->reader; | |
b8acb808 | 379 | struct service_processor *sp = event_data->sp; |
1da177e4 | 380 | int ret; |
b8acb808 | 381 | unsigned long flags; |
1da177e4 LT |
382 | |
383 | if (*offset < 0) | |
384 | return -EINVAL; | |
385 | if (count == 0 || count > IBMASM_EVENT_MAX_SIZE) | |
386 | return 0; | |
387 | if (*offset != 0) | |
388 | return 0; | |
389 | ||
b8acb808 MA |
390 | spin_lock_irqsave(&sp->lock, flags); |
391 | if (event_data->active) { | |
392 | spin_unlock_irqrestore(&sp->lock, flags); | |
393 | return -EBUSY; | |
394 | } | |
395 | event_data->active = 1; | |
396 | spin_unlock_irqrestore(&sp->lock, flags); | |
397 | ||
398 | ret = ibmasm_get_next_event(sp, reader); | |
1da177e4 | 399 | if (ret <= 0) |
b8acb808 | 400 | goto out; |
1da177e4 | 401 | |
b8acb808 MA |
402 | if (count < reader->data_size) { |
403 | ret = -EINVAL; | |
404 | goto out; | |
405 | } | |
1da177e4 | 406 | |
b8acb808 MA |
407 | if (copy_to_user(buf, reader->data, reader->data_size)) { |
408 | ret = -EFAULT; | |
409 | goto out; | |
410 | } | |
411 | ret = reader->data_size; | |
1da177e4 | 412 | |
b8acb808 MA |
413 | out: |
414 | event_data->active = 0; | |
415 | return ret; | |
1da177e4 LT |
416 | } |
417 | ||
418 | static ssize_t event_file_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) | |
419 | { | |
420 | struct ibmasmfs_event_data *event_data = file->private_data; | |
421 | ||
422 | if (*offset < 0) | |
423 | return -EINVAL; | |
424 | if (count != 1) | |
425 | return 0; | |
426 | if (*offset != 0) | |
427 | return 0; | |
428 | ||
b8acb808 | 429 | ibmasm_cancel_next_event(&event_data->reader); |
1da177e4 LT |
430 | return 0; |
431 | } | |
432 | ||
433 | static int r_heartbeat_file_open(struct inode *inode, struct file *file) | |
434 | { | |
435 | struct ibmasmfs_heartbeat_data *rhbeat; | |
436 | ||
8e18e294 | 437 | if (!inode->i_private) |
1da177e4 LT |
438 | return -ENODEV; |
439 | ||
440 | rhbeat = kmalloc(sizeof(struct ibmasmfs_heartbeat_data), GFP_KERNEL); | |
441 | if (!rhbeat) | |
442 | return -ENOMEM; | |
443 | ||
8e18e294 | 444 | rhbeat->sp = inode->i_private; |
1da177e4 LT |
445 | rhbeat->active = 0; |
446 | ibmasm_init_reverse_heartbeat(rhbeat->sp, &rhbeat->heartbeat); | |
447 | file->private_data = rhbeat; | |
448 | return 0; | |
449 | } | |
450 | ||
451 | static int r_heartbeat_file_close(struct inode *inode, struct file *file) | |
452 | { | |
453 | struct ibmasmfs_heartbeat_data *rhbeat = file->private_data; | |
454 | ||
455 | kfree(rhbeat); | |
456 | return 0; | |
457 | } | |
458 | ||
459 | static ssize_t r_heartbeat_file_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
460 | { | |
461 | struct ibmasmfs_heartbeat_data *rhbeat = file->private_data; | |
462 | unsigned long flags; | |
463 | int result; | |
464 | ||
465 | if (*offset < 0) | |
466 | return -EINVAL; | |
467 | if (count == 0 || count > 1024) | |
468 | return 0; | |
469 | if (*offset != 0) | |
470 | return 0; | |
471 | ||
472 | /* allow only one reverse heartbeat per process */ | |
473 | spin_lock_irqsave(&rhbeat->sp->lock, flags); | |
474 | if (rhbeat->active) { | |
475 | spin_unlock_irqrestore(&rhbeat->sp->lock, flags); | |
476 | return -EBUSY; | |
477 | } | |
478 | rhbeat->active = 1; | |
479 | spin_unlock_irqrestore(&rhbeat->sp->lock, flags); | |
480 | ||
481 | result = ibmasm_start_reverse_heartbeat(rhbeat->sp, &rhbeat->heartbeat); | |
482 | rhbeat->active = 0; | |
483 | ||
484 | return result; | |
485 | } | |
486 | ||
487 | static ssize_t r_heartbeat_file_write(struct file *file, const char __user *buf, size_t count, loff_t *offset) | |
488 | { | |
489 | struct ibmasmfs_heartbeat_data *rhbeat = file->private_data; | |
490 | ||
491 | if (*offset < 0) | |
492 | return -EINVAL; | |
493 | if (count != 1) | |
494 | return 0; | |
495 | if (*offset != 0) | |
496 | return 0; | |
497 | ||
498 | if (rhbeat->active) | |
499 | ibmasm_stop_reverse_heartbeat(&rhbeat->heartbeat); | |
500 | ||
501 | return 1; | |
502 | } | |
503 | ||
1da177e4 LT |
504 | static int remote_settings_file_close(struct inode *inode, struct file *file) |
505 | { | |
506 | return 0; | |
507 | } | |
508 | ||
509 | static ssize_t remote_settings_file_read(struct file *file, char __user *buf, size_t count, loff_t *offset) | |
510 | { | |
511 | void __iomem *address = (void __iomem *)file->private_data; | |
512 | unsigned char *page; | |
513 | int retval; | |
514 | int len = 0; | |
515 | unsigned int value; | |
516 | ||
517 | if (*offset < 0) | |
518 | return -EINVAL; | |
519 | if (count == 0 || count > 1024) | |
520 | return 0; | |
521 | if (*offset != 0) | |
522 | return 0; | |
523 | ||
524 | page = (unsigned char *)__get_free_page(GFP_KERNEL); | |
525 | if (!page) | |
526 | return -ENOMEM; | |
527 | ||
528 | value = readl(address); | |
529 | len = sprintf(page, "%d\n", value); | |
530 | ||
531 | if (copy_to_user(buf, page, len)) { | |
532 | retval = -EFAULT; | |
533 | goto exit; | |
534 | } | |
535 | *offset += len; | |
536 | retval = len; | |
537 | ||
538 | exit: | |
539 | free_page((unsigned long)page); | |
540 | return retval; | |
541 | } | |
542 | ||
543 | static ssize_t remote_settings_file_write(struct file *file, const char __user *ubuff, size_t count, loff_t *offset) | |
544 | { | |
545 | void __iomem *address = (void __iomem *)file->private_data; | |
546 | char *buff; | |
547 | unsigned int value; | |
548 | ||
549 | if (*offset < 0) | |
550 | return -EINVAL; | |
551 | if (count == 0 || count > 1024) | |
552 | return 0; | |
553 | if (*offset != 0) | |
554 | return 0; | |
555 | ||
dd00cc48 | 556 | buff = kzalloc (count + 1, GFP_KERNEL); |
1da177e4 LT |
557 | if (!buff) |
558 | return -ENOMEM; | |
559 | ||
1da177e4 LT |
560 | |
561 | if (copy_from_user(buff, ubuff, count)) { | |
562 | kfree(buff); | |
563 | return -EFAULT; | |
564 | } | |
3110dc7a | 565 | |
1da177e4 LT |
566 | value = simple_strtoul(buff, NULL, 10); |
567 | writel(value, address); | |
568 | kfree(buff); | |
569 | ||
570 | return count; | |
571 | } | |
572 | ||
d54b1fdb | 573 | static const struct file_operations command_fops = { |
1da177e4 LT |
574 | .open = command_file_open, |
575 | .release = command_file_close, | |
576 | .read = command_file_read, | |
577 | .write = command_file_write, | |
275bd41a | 578 | .llseek = generic_file_llseek, |
1da177e4 LT |
579 | }; |
580 | ||
d54b1fdb | 581 | static const struct file_operations event_fops = { |
1da177e4 LT |
582 | .open = event_file_open, |
583 | .release = event_file_close, | |
584 | .read = event_file_read, | |
585 | .write = event_file_write, | |
275bd41a | 586 | .llseek = generic_file_llseek, |
1da177e4 LT |
587 | }; |
588 | ||
d54b1fdb | 589 | static const struct file_operations r_heartbeat_fops = { |
1da177e4 LT |
590 | .open = r_heartbeat_file_open, |
591 | .release = r_heartbeat_file_close, | |
592 | .read = r_heartbeat_file_read, | |
593 | .write = r_heartbeat_file_write, | |
275bd41a | 594 | .llseek = generic_file_llseek, |
1da177e4 LT |
595 | }; |
596 | ||
d54b1fdb | 597 | static const struct file_operations remote_settings_fops = { |
234e3405 | 598 | .open = simple_open, |
1da177e4 LT |
599 | .release = remote_settings_file_close, |
600 | .read = remote_settings_file_read, | |
601 | .write = remote_settings_file_write, | |
275bd41a | 602 | .llseek = generic_file_llseek, |
1da177e4 LT |
603 | }; |
604 | ||
1da177e4 | 605 | |
318ceed0 | 606 | static void ibmasmfs_create_files (struct super_block *sb) |
1da177e4 LT |
607 | { |
608 | struct list_head *entry; | |
609 | struct service_processor *sp; | |
610 | ||
611 | list_for_each(entry, &service_processors) { | |
612 | struct dentry *dir; | |
613 | struct dentry *remote_dir; | |
614 | sp = list_entry(entry, struct service_processor, node); | |
318ceed0 | 615 | dir = ibmasmfs_create_dir(sb, sb->s_root, sp->dirname); |
1da177e4 LT |
616 | if (!dir) |
617 | continue; | |
618 | ||
619 | ibmasmfs_create_file(sb, dir, "command", &command_fops, sp, S_IRUSR|S_IWUSR); | |
620 | ibmasmfs_create_file(sb, dir, "event", &event_fops, sp, S_IRUSR|S_IWUSR); | |
621 | ibmasmfs_create_file(sb, dir, "reverse_heartbeat", &r_heartbeat_fops, sp, S_IRUSR|S_IWUSR); | |
622 | ||
623 | remote_dir = ibmasmfs_create_dir(sb, dir, "remote_video"); | |
624 | if (!remote_dir) | |
625 | continue; | |
626 | ||
627 | ibmasmfs_create_file(sb, remote_dir, "width", &remote_settings_fops, (void *)display_width(sp), S_IRUSR|S_IWUSR); | |
628 | ibmasmfs_create_file(sb, remote_dir, "height", &remote_settings_fops, (void *)display_height(sp), S_IRUSR|S_IWUSR); | |
629 | ibmasmfs_create_file(sb, remote_dir, "depth", &remote_settings_fops, (void *)display_depth(sp), S_IRUSR|S_IWUSR); | |
1da177e4 LT |
630 | } |
631 | } |