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1da177e4 LT |
1 | /* |
2 | * | |
3 | * Linux MegaRAID device driver | |
4 | * | |
5 | * Copyright (c) 2003-2004 LSI Logic Corporation. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FILE : megaraid_mm.c | |
0b4972d5 | 13 | * Version : v2.20.2.7 (Jul 16 2006) |
1da177e4 LT |
14 | * |
15 | * Common management module | |
16 | */ | |
17 | ||
18 | #include "megaraid_mm.h" | |
1da177e4 LT |
19 | |
20 | ||
21 | // Entry points for char node driver | |
22 | static int mraid_mm_open(struct inode *, struct file *); | |
23 | static int mraid_mm_ioctl(struct inode *, struct file *, uint, unsigned long); | |
24 | ||
25 | ||
26 | // routines to convert to and from the old the format | |
27 | static int mimd_to_kioc(mimd_t __user *, mraid_mmadp_t *, uioc_t *); | |
28 | static int kioc_to_mimd(uioc_t *, mimd_t __user *); | |
29 | ||
30 | ||
31 | // Helper functions | |
32 | static int handle_drvrcmd(void __user *, uint8_t, int *); | |
33 | static int lld_ioctl(mraid_mmadp_t *, uioc_t *); | |
34 | static void ioctl_done(uioc_t *); | |
35 | static void lld_timedout(unsigned long); | |
36 | static void hinfo_to_cinfo(mraid_hba_info_t *, mcontroller_t *); | |
37 | static mraid_mmadp_t *mraid_mm_get_adapter(mimd_t __user *, int *); | |
38 | static uioc_t *mraid_mm_alloc_kioc(mraid_mmadp_t *); | |
39 | static void mraid_mm_dealloc_kioc(mraid_mmadp_t *, uioc_t *); | |
40 | static int mraid_mm_attach_buf(mraid_mmadp_t *, uioc_t *, int); | |
41 | static int mraid_mm_setup_dma_pools(mraid_mmadp_t *); | |
42 | static void mraid_mm_free_adp_resources(mraid_mmadp_t *); | |
43 | static void mraid_mm_teardown_dma_pools(mraid_mmadp_t *); | |
44 | ||
45 | #ifdef CONFIG_COMPAT | |
46 | static long mraid_mm_compat_ioctl(struct file *, unsigned int, unsigned long); | |
47 | #endif | |
48 | ||
49 | MODULE_AUTHOR("LSI Logic Corporation"); | |
50 | MODULE_DESCRIPTION("LSI Logic Management Module"); | |
51 | MODULE_LICENSE("GPL"); | |
52 | MODULE_VERSION(LSI_COMMON_MOD_VERSION); | |
53 | ||
54 | static int dbglevel = CL_ANN; | |
55 | module_param_named(dlevel, dbglevel, int, 0); | |
56 | MODULE_PARM_DESC(dlevel, "Debug level (default=0)"); | |
57 | ||
58 | EXPORT_SYMBOL(mraid_mm_register_adp); | |
59 | EXPORT_SYMBOL(mraid_mm_unregister_adp); | |
60 | EXPORT_SYMBOL(mraid_mm_adapter_app_handle); | |
61 | ||
62 | static int majorno; | |
672b2d38 | 63 | static uint32_t drvr_ver = 0x02200206; |
1da177e4 LT |
64 | |
65 | static int adapters_count_g; | |
66 | static struct list_head adapters_list_g; | |
67 | ||
68 | static wait_queue_head_t wait_q; | |
69 | ||
00977a59 | 70 | static const struct file_operations lsi_fops = { |
1da177e4 LT |
71 | .open = mraid_mm_open, |
72 | .ioctl = mraid_mm_ioctl, | |
73 | #ifdef CONFIG_COMPAT | |
74 | .compat_ioctl = mraid_mm_compat_ioctl, | |
75 | #endif | |
76 | .owner = THIS_MODULE, | |
77 | }; | |
78 | ||
79 | /** | |
80 | * mraid_mm_open - open routine for char node interface | |
a69b74d3 | 81 | * @inode : unused |
1da177e4 LT |
82 | * @filep : unused |
83 | * | |
a69b74d3 | 84 | * Allow ioctl operations by apps only if they have superuser privilege. |
1da177e4 LT |
85 | */ |
86 | static int | |
87 | mraid_mm_open(struct inode *inode, struct file *filep) | |
88 | { | |
89 | /* | |
90 | * Only allow superuser to access private ioctl interface | |
91 | */ | |
92 | if (!capable(CAP_SYS_ADMIN)) return (-EACCES); | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
97 | /** | |
98 | * mraid_mm_ioctl - module entry-point for ioctls | |
99 | * @inode : inode (ignored) | |
100 | * @filep : file operations pointer (ignored) | |
101 | * @cmd : ioctl command | |
102 | * @arg : user ioctl packet | |
103 | */ | |
104 | static int | |
105 | mraid_mm_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, | |
106 | unsigned long arg) | |
107 | { | |
108 | uioc_t *kioc; | |
109 | char signature[EXT_IOCTL_SIGN_SZ] = {0}; | |
110 | int rval; | |
111 | mraid_mmadp_t *adp; | |
112 | uint8_t old_ioctl; | |
113 | int drvrcmd_rval; | |
114 | void __user *argp = (void __user *)arg; | |
115 | ||
116 | /* | |
117 | * Make sure only USCSICMD are issued through this interface. | |
118 | * MIMD application would still fire different command. | |
119 | */ | |
120 | ||
121 | if ((_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD)) { | |
122 | return (-EINVAL); | |
123 | } | |
124 | ||
125 | /* | |
126 | * Look for signature to see if this is the new or old ioctl format. | |
127 | */ | |
128 | if (copy_from_user(signature, argp, EXT_IOCTL_SIGN_SZ)) { | |
129 | con_log(CL_ANN, (KERN_WARNING | |
130 | "megaraid cmm: copy from usr addr failed\n")); | |
131 | return (-EFAULT); | |
132 | } | |
133 | ||
134 | if (memcmp(signature, EXT_IOCTL_SIGN, EXT_IOCTL_SIGN_SZ) == 0) | |
135 | old_ioctl = 0; | |
136 | else | |
137 | old_ioctl = 1; | |
138 | ||
139 | /* | |
140 | * At present, we don't support the new ioctl packet | |
141 | */ | |
142 | if (!old_ioctl ) | |
143 | return (-EINVAL); | |
144 | ||
145 | /* | |
146 | * If it is a driver ioctl (as opposed to fw ioctls), then we can | |
147 | * handle the command locally. rval > 0 means it is not a drvr cmd | |
148 | */ | |
149 | rval = handle_drvrcmd(argp, old_ioctl, &drvrcmd_rval); | |
150 | ||
151 | if (rval < 0) | |
152 | return rval; | |
153 | else if (rval == 0) | |
154 | return drvrcmd_rval; | |
155 | ||
156 | rval = 0; | |
157 | if ((adp = mraid_mm_get_adapter(argp, &rval)) == NULL) { | |
158 | return rval; | |
159 | } | |
160 | ||
161 | /* | |
162 | * Check if adapter can accept ioctl. We may have marked it offline | |
163 | * if any previous kioc had timedout on this controller. | |
164 | */ | |
165 | if (!adp->quiescent) { | |
166 | con_log(CL_ANN, (KERN_WARNING | |
167 | "megaraid cmm: controller cannot accept cmds due to " | |
168 | "earlier errors\n" )); | |
169 | return -EFAULT; | |
170 | } | |
171 | ||
172 | /* | |
173 | * The following call will block till a kioc is available | |
174 | */ | |
175 | kioc = mraid_mm_alloc_kioc(adp); | |
176 | ||
177 | /* | |
178 | * User sent the old mimd_t ioctl packet. Convert it to uioc_t. | |
179 | */ | |
180 | if ((rval = mimd_to_kioc(argp, adp, kioc))) { | |
181 | mraid_mm_dealloc_kioc(adp, kioc); | |
182 | return rval; | |
183 | } | |
184 | ||
185 | kioc->done = ioctl_done; | |
186 | ||
187 | /* | |
188 | * Issue the IOCTL to the low level driver. After the IOCTL completes | |
189 | * release the kioc if and only if it was _not_ timedout. If it was | |
190 | * timedout, that means that resources are still with low level driver. | |
191 | */ | |
192 | if ((rval = lld_ioctl(adp, kioc))) { | |
193 | ||
194 | if (!kioc->timedout) | |
195 | mraid_mm_dealloc_kioc(adp, kioc); | |
196 | ||
197 | return rval; | |
198 | } | |
199 | ||
200 | /* | |
201 | * Convert the kioc back to user space | |
202 | */ | |
203 | rval = kioc_to_mimd(kioc, argp); | |
204 | ||
205 | /* | |
206 | * Return the kioc to free pool | |
207 | */ | |
208 | mraid_mm_dealloc_kioc(adp, kioc); | |
209 | ||
210 | return rval; | |
211 | } | |
212 | ||
213 | ||
214 | /** | |
215 | * mraid_mm_get_adapter - Returns corresponding adapters for the mimd packet | |
216 | * @umimd : User space mimd_t ioctl packet | |
a69b74d3 RD |
217 | * @rval : returned success/error status |
218 | * | |
219 | * The function return value is a pointer to the located @adapter. | |
1da177e4 LT |
220 | */ |
221 | static mraid_mmadp_t * | |
222 | mraid_mm_get_adapter(mimd_t __user *umimd, int *rval) | |
223 | { | |
224 | mraid_mmadp_t *adapter; | |
225 | mimd_t mimd; | |
226 | uint32_t adapno; | |
227 | int iterator; | |
228 | ||
229 | ||
230 | if (copy_from_user(&mimd, umimd, sizeof(mimd_t))) { | |
231 | *rval = -EFAULT; | |
232 | return NULL; | |
233 | } | |
234 | ||
235 | adapno = GETADAP(mimd.ui.fcs.adapno); | |
236 | ||
237 | if (adapno >= adapters_count_g) { | |
238 | *rval = -ENODEV; | |
239 | return NULL; | |
240 | } | |
241 | ||
242 | adapter = NULL; | |
243 | iterator = 0; | |
244 | ||
245 | list_for_each_entry(adapter, &adapters_list_g, list) { | |
246 | if (iterator++ == adapno) break; | |
247 | } | |
248 | ||
249 | if (!adapter) { | |
250 | *rval = -ENODEV; | |
251 | return NULL; | |
252 | } | |
253 | ||
254 | return adapter; | |
255 | } | |
256 | ||
a69b74d3 RD |
257 | /** |
258 | * handle_drvrcmd - Checks if the opcode is a driver cmd and if it is, handles it. | |
1da177e4 LT |
259 | * @arg : packet sent by the user app |
260 | * @old_ioctl : mimd if 1; uioc otherwise | |
a69b74d3 | 261 | * @rval : pointer for command's returned value (not function status) |
1da177e4 LT |
262 | */ |
263 | static int | |
264 | handle_drvrcmd(void __user *arg, uint8_t old_ioctl, int *rval) | |
265 | { | |
266 | mimd_t __user *umimd; | |
267 | mimd_t kmimd; | |
268 | uint8_t opcode; | |
269 | uint8_t subopcode; | |
270 | ||
271 | if (old_ioctl) | |
272 | goto old_packet; | |
273 | else | |
274 | goto new_packet; | |
275 | ||
276 | new_packet: | |
277 | return (-ENOTSUPP); | |
278 | ||
279 | old_packet: | |
280 | *rval = 0; | |
281 | umimd = arg; | |
282 | ||
283 | if (copy_from_user(&kmimd, umimd, sizeof(mimd_t))) | |
284 | return (-EFAULT); | |
285 | ||
286 | opcode = kmimd.ui.fcs.opcode; | |
287 | subopcode = kmimd.ui.fcs.subopcode; | |
288 | ||
289 | /* | |
290 | * If the opcode is 0x82 and the subopcode is either GET_DRVRVER or | |
291 | * GET_NUMADP, then we can handle. Otherwise we should return 1 to | |
292 | * indicate that we cannot handle this. | |
293 | */ | |
294 | if (opcode != 0x82) | |
295 | return 1; | |
296 | ||
297 | switch (subopcode) { | |
298 | ||
299 | case MEGAIOC_QDRVRVER: | |
300 | ||
301 | if (copy_to_user(kmimd.data, &drvr_ver, sizeof(uint32_t))) | |
302 | return (-EFAULT); | |
303 | ||
304 | return 0; | |
305 | ||
306 | case MEGAIOC_QNADAP: | |
307 | ||
308 | *rval = adapters_count_g; | |
309 | ||
310 | if (copy_to_user(kmimd.data, &adapters_count_g, | |
311 | sizeof(uint32_t))) | |
312 | return (-EFAULT); | |
313 | ||
314 | return 0; | |
315 | ||
316 | default: | |
317 | /* cannot handle */ | |
318 | return 1; | |
319 | } | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
324 | ||
325 | /** | |
326 | * mimd_to_kioc - Converter from old to new ioctl format | |
1da177e4 | 327 | * @umimd : user space old MIMD IOCTL |
a69b74d3 | 328 | * @adp : adapter softstate |
1da177e4 LT |
329 | * @kioc : kernel space new format IOCTL |
330 | * | |
331 | * Routine to convert MIMD interface IOCTL to new interface IOCTL packet. The | |
332 | * new packet is in kernel space so that driver can perform operations on it | |
333 | * freely. | |
334 | */ | |
335 | ||
336 | static int | |
337 | mimd_to_kioc(mimd_t __user *umimd, mraid_mmadp_t *adp, uioc_t *kioc) | |
338 | { | |
339 | mbox64_t *mbox64; | |
340 | mbox_t *mbox; | |
341 | mraid_passthru_t *pthru32; | |
342 | uint32_t adapno; | |
343 | uint8_t opcode; | |
344 | uint8_t subopcode; | |
345 | mimd_t mimd; | |
346 | ||
347 | if (copy_from_user(&mimd, umimd, sizeof(mimd_t))) | |
348 | return (-EFAULT); | |
349 | ||
350 | /* | |
351 | * Applications are not allowed to send extd pthru | |
352 | */ | |
353 | if ((mimd.mbox[0] == MBOXCMD_PASSTHRU64) || | |
354 | (mimd.mbox[0] == MBOXCMD_EXTPTHRU)) | |
355 | return (-EINVAL); | |
356 | ||
357 | opcode = mimd.ui.fcs.opcode; | |
358 | subopcode = mimd.ui.fcs.subopcode; | |
359 | adapno = GETADAP(mimd.ui.fcs.adapno); | |
360 | ||
361 | if (adapno >= adapters_count_g) | |
362 | return (-ENODEV); | |
363 | ||
364 | kioc->adapno = adapno; | |
365 | kioc->mb_type = MBOX_LEGACY; | |
366 | kioc->app_type = APPTYPE_MIMD; | |
367 | ||
368 | switch (opcode) { | |
369 | ||
370 | case 0x82: | |
371 | ||
372 | if (subopcode == MEGAIOC_QADAPINFO) { | |
373 | ||
374 | kioc->opcode = GET_ADAP_INFO; | |
375 | kioc->data_dir = UIOC_RD; | |
376 | kioc->xferlen = sizeof(mraid_hba_info_t); | |
377 | ||
378 | if (mraid_mm_attach_buf(adp, kioc, kioc->xferlen)) | |
379 | return (-ENOMEM); | |
380 | } | |
381 | else { | |
382 | con_log(CL_ANN, (KERN_WARNING | |
383 | "megaraid cmm: Invalid subop\n")); | |
384 | return (-EINVAL); | |
385 | } | |
386 | ||
387 | break; | |
388 | ||
389 | case 0x81: | |
390 | ||
391 | kioc->opcode = MBOX_CMD; | |
392 | kioc->xferlen = mimd.ui.fcs.length; | |
393 | kioc->user_data_len = kioc->xferlen; | |
394 | kioc->user_data = mimd.ui.fcs.buffer; | |
395 | ||
396 | if (mraid_mm_attach_buf(adp, kioc, kioc->xferlen)) | |
397 | return (-ENOMEM); | |
398 | ||
399 | if (mimd.outlen) kioc->data_dir = UIOC_RD; | |
400 | if (mimd.inlen) kioc->data_dir |= UIOC_WR; | |
401 | ||
402 | break; | |
403 | ||
404 | case 0x80: | |
405 | ||
406 | kioc->opcode = MBOX_CMD; | |
407 | kioc->xferlen = (mimd.outlen > mimd.inlen) ? | |
408 | mimd.outlen : mimd.inlen; | |
409 | kioc->user_data_len = kioc->xferlen; | |
410 | kioc->user_data = mimd.data; | |
411 | ||
412 | if (mraid_mm_attach_buf(adp, kioc, kioc->xferlen)) | |
413 | return (-ENOMEM); | |
414 | ||
415 | if (mimd.outlen) kioc->data_dir = UIOC_RD; | |
416 | if (mimd.inlen) kioc->data_dir |= UIOC_WR; | |
417 | ||
418 | break; | |
419 | ||
420 | default: | |
421 | return (-EINVAL); | |
422 | } | |
423 | ||
424 | /* | |
425 | * If driver command, nothing else to do | |
426 | */ | |
427 | if (opcode == 0x82) | |
428 | return 0; | |
429 | ||
430 | /* | |
431 | * This is a mailbox cmd; copy the mailbox from mimd | |
432 | */ | |
433 | mbox64 = (mbox64_t *)((unsigned long)kioc->cmdbuf); | |
434 | mbox = &mbox64->mbox32; | |
435 | memcpy(mbox, mimd.mbox, 14); | |
436 | ||
437 | if (mbox->cmd != MBOXCMD_PASSTHRU) { // regular DCMD | |
438 | ||
439 | mbox->xferaddr = (uint32_t)kioc->buf_paddr; | |
440 | ||
441 | if (kioc->data_dir & UIOC_WR) { | |
442 | if (copy_from_user(kioc->buf_vaddr, kioc->user_data, | |
443 | kioc->xferlen)) { | |
444 | return (-EFAULT); | |
445 | } | |
446 | } | |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
451 | /* | |
452 | * This is a regular 32-bit pthru cmd; mbox points to pthru struct. | |
453 | * Just like in above case, the beginning for memblk is treated as | |
454 | * a mailbox. The passthru will begin at next 1K boundary. And the | |
455 | * data will start 1K after that. | |
456 | */ | |
457 | pthru32 = kioc->pthru32; | |
458 | kioc->user_pthru = &umimd->pthru; | |
459 | mbox->xferaddr = (uint32_t)kioc->pthru32_h; | |
460 | ||
461 | if (copy_from_user(pthru32, kioc->user_pthru, | |
462 | sizeof(mraid_passthru_t))) { | |
463 | return (-EFAULT); | |
464 | } | |
465 | ||
466 | pthru32->dataxferaddr = kioc->buf_paddr; | |
467 | if (kioc->data_dir & UIOC_WR) { | |
468 | if (copy_from_user(kioc->buf_vaddr, kioc->user_data, | |
469 | pthru32->dataxferlen)) { | |
470 | return (-EFAULT); | |
471 | } | |
472 | } | |
473 | ||
474 | return 0; | |
475 | } | |
476 | ||
477 | /** | |
478 | * mraid_mm_attch_buf - Attach a free dma buffer for required size | |
1da177e4 LT |
479 | * @adp : Adapter softstate |
480 | * @kioc : kioc that the buffer needs to be attached to | |
481 | * @xferlen : required length for buffer | |
482 | * | |
483 | * First we search for a pool with smallest buffer that is >= @xferlen. If | |
484 | * that pool has no free buffer, we will try for the next bigger size. If none | |
485 | * is available, we will try to allocate the smallest buffer that is >= | |
486 | * @xferlen and attach it the pool. | |
487 | */ | |
488 | static int | |
489 | mraid_mm_attach_buf(mraid_mmadp_t *adp, uioc_t *kioc, int xferlen) | |
490 | { | |
491 | mm_dmapool_t *pool; | |
492 | int right_pool = -1; | |
493 | unsigned long flags; | |
494 | int i; | |
495 | ||
496 | kioc->pool_index = -1; | |
497 | kioc->buf_vaddr = NULL; | |
498 | kioc->buf_paddr = 0; | |
499 | kioc->free_buf = 0; | |
500 | ||
501 | /* | |
502 | * We need xferlen amount of memory. See if we can get it from our | |
503 | * dma pools. If we don't get exact size, we will try bigger buffer | |
504 | */ | |
505 | ||
506 | for (i = 0; i < MAX_DMA_POOLS; i++) { | |
507 | ||
508 | pool = &adp->dma_pool_list[i]; | |
509 | ||
510 | if (xferlen > pool->buf_size) | |
511 | continue; | |
512 | ||
513 | if (right_pool == -1) | |
514 | right_pool = i; | |
515 | ||
516 | spin_lock_irqsave(&pool->lock, flags); | |
517 | ||
518 | if (!pool->in_use) { | |
519 | ||
520 | pool->in_use = 1; | |
521 | kioc->pool_index = i; | |
522 | kioc->buf_vaddr = pool->vaddr; | |
523 | kioc->buf_paddr = pool->paddr; | |
524 | ||
525 | spin_unlock_irqrestore(&pool->lock, flags); | |
526 | return 0; | |
527 | } | |
528 | else { | |
529 | spin_unlock_irqrestore(&pool->lock, flags); | |
530 | continue; | |
531 | } | |
532 | } | |
533 | ||
534 | /* | |
535 | * If xferlen doesn't match any of our pools, return error | |
536 | */ | |
537 | if (right_pool == -1) | |
538 | return -EINVAL; | |
539 | ||
540 | /* | |
541 | * We did not get any buffer from the preallocated pool. Let us try | |
542 | * to allocate one new buffer. NOTE: This is a blocking call. | |
543 | */ | |
544 | pool = &adp->dma_pool_list[right_pool]; | |
545 | ||
546 | spin_lock_irqsave(&pool->lock, flags); | |
547 | ||
548 | kioc->pool_index = right_pool; | |
549 | kioc->free_buf = 1; | |
550 | kioc->buf_vaddr = pci_pool_alloc(pool->handle, GFP_KERNEL, | |
551 | &kioc->buf_paddr); | |
552 | spin_unlock_irqrestore(&pool->lock, flags); | |
553 | ||
554 | if (!kioc->buf_vaddr) | |
555 | return -ENOMEM; | |
556 | ||
557 | return 0; | |
558 | } | |
559 | ||
560 | /** | |
561 | * mraid_mm_alloc_kioc - Returns a uioc_t from free list | |
562 | * @adp : Adapter softstate for this module | |
563 | * | |
564 | * The kioc_semaphore is initialized with number of kioc nodes in the | |
565 | * free kioc pool. If the kioc pool is empty, this function blocks till | |
566 | * a kioc becomes free. | |
567 | */ | |
568 | static uioc_t * | |
569 | mraid_mm_alloc_kioc(mraid_mmadp_t *adp) | |
570 | { | |
571 | uioc_t *kioc; | |
572 | struct list_head* head; | |
573 | unsigned long flags; | |
574 | ||
575 | down(&adp->kioc_semaphore); | |
576 | ||
577 | spin_lock_irqsave(&adp->kioc_pool_lock, flags); | |
578 | ||
579 | head = &adp->kioc_pool; | |
580 | ||
581 | if (list_empty(head)) { | |
582 | up(&adp->kioc_semaphore); | |
583 | spin_unlock_irqrestore(&adp->kioc_pool_lock, flags); | |
584 | ||
585 | con_log(CL_ANN, ("megaraid cmm: kioc list empty!\n")); | |
586 | return NULL; | |
587 | } | |
588 | ||
589 | kioc = list_entry(head->next, uioc_t, list); | |
590 | list_del_init(&kioc->list); | |
591 | ||
592 | spin_unlock_irqrestore(&adp->kioc_pool_lock, flags); | |
593 | ||
594 | memset((caddr_t)(unsigned long)kioc->cmdbuf, 0, sizeof(mbox64_t)); | |
595 | memset((caddr_t) kioc->pthru32, 0, sizeof(mraid_passthru_t)); | |
596 | ||
597 | kioc->buf_vaddr = NULL; | |
598 | kioc->buf_paddr = 0; | |
599 | kioc->pool_index =-1; | |
600 | kioc->free_buf = 0; | |
601 | kioc->user_data = NULL; | |
602 | kioc->user_data_len = 0; | |
603 | kioc->user_pthru = NULL; | |
604 | kioc->timedout = 0; | |
605 | ||
606 | return kioc; | |
607 | } | |
608 | ||
609 | /** | |
610 | * mraid_mm_dealloc_kioc - Return kioc to free pool | |
1da177e4 LT |
611 | * @adp : Adapter softstate |
612 | * @kioc : uioc_t node to be returned to free pool | |
613 | */ | |
614 | static void | |
615 | mraid_mm_dealloc_kioc(mraid_mmadp_t *adp, uioc_t *kioc) | |
616 | { | |
617 | mm_dmapool_t *pool; | |
618 | unsigned long flags; | |
619 | ||
620 | if (kioc->pool_index != -1) { | |
621 | pool = &adp->dma_pool_list[kioc->pool_index]; | |
622 | ||
623 | /* This routine may be called in non-isr context also */ | |
624 | spin_lock_irqsave(&pool->lock, flags); | |
625 | ||
626 | /* | |
627 | * While attaching the dma buffer, if we didn't get the | |
628 | * required buffer from the pool, we would have allocated | |
629 | * it at the run time and set the free_buf flag. We must | |
630 | * free that buffer. Otherwise, just mark that the buffer is | |
631 | * not in use | |
632 | */ | |
633 | if (kioc->free_buf == 1) | |
634 | pci_pool_free(pool->handle, kioc->buf_vaddr, | |
635 | kioc->buf_paddr); | |
636 | else | |
637 | pool->in_use = 0; | |
638 | ||
639 | spin_unlock_irqrestore(&pool->lock, flags); | |
640 | } | |
641 | ||
642 | /* Return the kioc to the free pool */ | |
643 | spin_lock_irqsave(&adp->kioc_pool_lock, flags); | |
644 | list_add(&kioc->list, &adp->kioc_pool); | |
645 | spin_unlock_irqrestore(&adp->kioc_pool_lock, flags); | |
646 | ||
647 | /* increment the free kioc count */ | |
648 | up(&adp->kioc_semaphore); | |
649 | ||
650 | return; | |
651 | } | |
652 | ||
653 | /** | |
654 | * lld_ioctl - Routine to issue ioctl to low level drvr | |
1da177e4 LT |
655 | * @adp : The adapter handle |
656 | * @kioc : The ioctl packet with kernel addresses | |
657 | */ | |
658 | static int | |
659 | lld_ioctl(mraid_mmadp_t *adp, uioc_t *kioc) | |
660 | { | |
661 | int rval; | |
662 | struct timer_list timer; | |
663 | struct timer_list *tp = NULL; | |
664 | ||
665 | kioc->status = -ENODATA; | |
666 | rval = adp->issue_uioc(adp->drvr_data, kioc, IOCTL_ISSUE); | |
667 | ||
668 | if (rval) return rval; | |
669 | ||
670 | /* | |
671 | * Start the timer | |
672 | */ | |
673 | if (adp->timeout > 0) { | |
674 | tp = &timer; | |
675 | init_timer(tp); | |
676 | ||
677 | tp->function = lld_timedout; | |
678 | tp->data = (unsigned long)kioc; | |
679 | tp->expires = jiffies + adp->timeout * HZ; | |
680 | ||
681 | add_timer(tp); | |
682 | } | |
683 | ||
684 | /* | |
685 | * Wait till the low level driver completes the ioctl. After this | |
686 | * call, the ioctl either completed successfully or timedout. | |
687 | */ | |
688 | wait_event(wait_q, (kioc->status != -ENODATA)); | |
689 | if (tp) { | |
690 | del_timer_sync(tp); | |
691 | } | |
692 | ||
693 | /* | |
694 | * If the command had timedout, we mark the controller offline | |
695 | * before returning | |
696 | */ | |
697 | if (kioc->timedout) { | |
698 | adp->quiescent = 0; | |
699 | } | |
700 | ||
701 | return kioc->status; | |
702 | } | |
703 | ||
704 | ||
705 | /** | |
706 | * ioctl_done - callback from the low level driver | |
1da177e4 LT |
707 | * @kioc : completed ioctl packet |
708 | */ | |
709 | static void | |
710 | ioctl_done(uioc_t *kioc) | |
711 | { | |
712 | uint32_t adapno; | |
713 | int iterator; | |
714 | mraid_mmadp_t* adapter; | |
715 | ||
716 | /* | |
717 | * When the kioc returns from driver, make sure it still doesn't | |
718 | * have ENODATA in status. Otherwise, driver will hang on wait_event | |
719 | * forever | |
720 | */ | |
721 | if (kioc->status == -ENODATA) { | |
722 | con_log(CL_ANN, (KERN_WARNING | |
723 | "megaraid cmm: lld didn't change status!\n")); | |
724 | ||
725 | kioc->status = -EINVAL; | |
726 | } | |
727 | ||
728 | /* | |
729 | * Check if this kioc was timedout before. If so, nobody is waiting | |
730 | * on this kioc. We don't have to wake up anybody. Instead, we just | |
731 | * have to free the kioc | |
732 | */ | |
733 | if (kioc->timedout) { | |
734 | iterator = 0; | |
735 | adapter = NULL; | |
736 | adapno = kioc->adapno; | |
737 | ||
738 | con_log(CL_ANN, ( KERN_WARNING "megaraid cmm: completed " | |
739 | "ioctl that was timedout before\n")); | |
740 | ||
741 | list_for_each_entry(adapter, &adapters_list_g, list) { | |
742 | if (iterator++ == adapno) break; | |
743 | } | |
744 | ||
745 | kioc->timedout = 0; | |
746 | ||
747 | if (adapter) { | |
748 | mraid_mm_dealloc_kioc( adapter, kioc ); | |
749 | } | |
750 | } | |
751 | else { | |
752 | wake_up(&wait_q); | |
753 | } | |
754 | } | |
755 | ||
756 | ||
a69b74d3 RD |
757 | /** |
758 | * lld_timedout - callback from the expired timer | |
1da177e4 LT |
759 | * @ptr : ioctl packet that timed out |
760 | */ | |
761 | static void | |
762 | lld_timedout(unsigned long ptr) | |
763 | { | |
764 | uioc_t *kioc = (uioc_t *)ptr; | |
765 | ||
766 | kioc->status = -ETIME; | |
767 | kioc->timedout = 1; | |
768 | ||
769 | con_log(CL_ANN, (KERN_WARNING "megaraid cmm: ioctl timed out\n")); | |
770 | ||
771 | wake_up(&wait_q); | |
772 | } | |
773 | ||
774 | ||
775 | /** | |
a69b74d3 | 776 | * kioc_to_mimd - Converter from new back to old format |
1da177e4 LT |
777 | * @kioc : Kernel space IOCTL packet (successfully issued) |
778 | * @mimd : User space MIMD packet | |
779 | */ | |
780 | static int | |
781 | kioc_to_mimd(uioc_t *kioc, mimd_t __user *mimd) | |
782 | { | |
783 | mimd_t kmimd; | |
784 | uint8_t opcode; | |
785 | uint8_t subopcode; | |
786 | ||
787 | mbox64_t *mbox64; | |
788 | mraid_passthru_t __user *upthru32; | |
789 | mraid_passthru_t *kpthru32; | |
790 | mcontroller_t cinfo; | |
791 | mraid_hba_info_t *hinfo; | |
792 | ||
793 | ||
794 | if (copy_from_user(&kmimd, mimd, sizeof(mimd_t))) | |
795 | return (-EFAULT); | |
796 | ||
797 | opcode = kmimd.ui.fcs.opcode; | |
798 | subopcode = kmimd.ui.fcs.subopcode; | |
799 | ||
800 | if (opcode == 0x82) { | |
801 | switch (subopcode) { | |
802 | ||
803 | case MEGAIOC_QADAPINFO: | |
804 | ||
805 | hinfo = (mraid_hba_info_t *)(unsigned long) | |
806 | kioc->buf_vaddr; | |
807 | ||
808 | hinfo_to_cinfo(hinfo, &cinfo); | |
809 | ||
810 | if (copy_to_user(kmimd.data, &cinfo, sizeof(cinfo))) | |
811 | return (-EFAULT); | |
812 | ||
813 | return 0; | |
814 | ||
815 | default: | |
816 | return (-EINVAL); | |
817 | } | |
818 | ||
819 | return 0; | |
820 | } | |
821 | ||
822 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; | |
823 | ||
824 | if (kioc->user_pthru) { | |
825 | ||
826 | upthru32 = kioc->user_pthru; | |
827 | kpthru32 = kioc->pthru32; | |
828 | ||
829 | if (copy_to_user(&upthru32->scsistatus, | |
830 | &kpthru32->scsistatus, | |
831 | sizeof(uint8_t))) { | |
832 | return (-EFAULT); | |
833 | } | |
834 | } | |
835 | ||
836 | if (kioc->user_data) { | |
837 | if (copy_to_user(kioc->user_data, kioc->buf_vaddr, | |
838 | kioc->user_data_len)) { | |
839 | return (-EFAULT); | |
840 | } | |
841 | } | |
842 | ||
843 | if (copy_to_user(&mimd->mbox[17], | |
844 | &mbox64->mbox32.status, sizeof(uint8_t))) { | |
845 | return (-EFAULT); | |
846 | } | |
847 | ||
848 | return 0; | |
849 | } | |
850 | ||
851 | ||
852 | /** | |
853 | * hinfo_to_cinfo - Convert new format hba info into old format | |
1da177e4 LT |
854 | * @hinfo : New format, more comprehensive adapter info |
855 | * @cinfo : Old format adapter info to support mimd_t apps | |
856 | */ | |
857 | static void | |
858 | hinfo_to_cinfo(mraid_hba_info_t *hinfo, mcontroller_t *cinfo) | |
859 | { | |
860 | if (!hinfo || !cinfo) | |
861 | return; | |
862 | ||
863 | cinfo->base = hinfo->baseport; | |
864 | cinfo->irq = hinfo->irq; | |
865 | cinfo->numldrv = hinfo->num_ldrv; | |
866 | cinfo->pcibus = hinfo->pci_bus; | |
867 | cinfo->pcidev = hinfo->pci_slot; | |
868 | cinfo->pcifun = PCI_FUNC(hinfo->pci_dev_fn); | |
869 | cinfo->pciid = hinfo->pci_device_id; | |
870 | cinfo->pcivendor = hinfo->pci_vendor_id; | |
871 | cinfo->pcislot = hinfo->pci_slot; | |
872 | cinfo->uid = hinfo->unique_id; | |
873 | } | |
874 | ||
875 | ||
a69b74d3 RD |
876 | /** |
877 | * mraid_mm_register_adp - Registration routine for low level drivers | |
878 | * @lld_adp : Adapter objejct | |
1da177e4 LT |
879 | */ |
880 | int | |
881 | mraid_mm_register_adp(mraid_mmadp_t *lld_adp) | |
882 | { | |
883 | mraid_mmadp_t *adapter; | |
884 | mbox64_t *mbox_list; | |
885 | uioc_t *kioc; | |
886 | uint32_t rval; | |
887 | int i; | |
888 | ||
889 | ||
890 | if (lld_adp->drvr_type != DRVRTYPE_MBOX) | |
891 | return (-EINVAL); | |
892 | ||
893 | adapter = kmalloc(sizeof(mraid_mmadp_t), GFP_KERNEL); | |
894 | ||
5236467a AB |
895 | if (!adapter) |
896 | return -ENOMEM; | |
1da177e4 LT |
897 | |
898 | memset(adapter, 0, sizeof(mraid_mmadp_t)); | |
899 | ||
900 | adapter->unique_id = lld_adp->unique_id; | |
901 | adapter->drvr_type = lld_adp->drvr_type; | |
902 | adapter->drvr_data = lld_adp->drvr_data; | |
903 | adapter->pdev = lld_adp->pdev; | |
904 | adapter->issue_uioc = lld_adp->issue_uioc; | |
905 | adapter->timeout = lld_adp->timeout; | |
906 | adapter->max_kioc = lld_adp->max_kioc; | |
907 | adapter->quiescent = 1; | |
908 | ||
909 | /* | |
910 | * Allocate single blocks of memory for all required kiocs, | |
911 | * mailboxes and passthru structures. | |
912 | */ | |
913 | adapter->kioc_list = kmalloc(sizeof(uioc_t) * lld_adp->max_kioc, | |
914 | GFP_KERNEL); | |
915 | adapter->mbox_list = kmalloc(sizeof(mbox64_t) * lld_adp->max_kioc, | |
916 | GFP_KERNEL); | |
917 | adapter->pthru_dma_pool = pci_pool_create("megaraid mm pthru pool", | |
918 | adapter->pdev, | |
919 | sizeof(mraid_passthru_t), | |
920 | 16, 0); | |
921 | ||
922 | if (!adapter->kioc_list || !adapter->mbox_list || | |
923 | !adapter->pthru_dma_pool) { | |
924 | ||
925 | con_log(CL_ANN, (KERN_WARNING | |
926 | "megaraid cmm: out of memory, %s %d\n", __FUNCTION__, | |
927 | __LINE__)); | |
928 | ||
929 | rval = (-ENOMEM); | |
930 | ||
931 | goto memalloc_error; | |
932 | } | |
933 | ||
934 | /* | |
935 | * Slice kioc_list and make a kioc_pool with the individiual kiocs | |
936 | */ | |
937 | INIT_LIST_HEAD(&adapter->kioc_pool); | |
938 | spin_lock_init(&adapter->kioc_pool_lock); | |
939 | sema_init(&adapter->kioc_semaphore, lld_adp->max_kioc); | |
940 | ||
941 | mbox_list = (mbox64_t *)adapter->mbox_list; | |
942 | ||
943 | for (i = 0; i < lld_adp->max_kioc; i++) { | |
944 | ||
945 | kioc = adapter->kioc_list + i; | |
946 | kioc->cmdbuf = (uint64_t)(unsigned long)(mbox_list + i); | |
947 | kioc->pthru32 = pci_pool_alloc(adapter->pthru_dma_pool, | |
948 | GFP_KERNEL, &kioc->pthru32_h); | |
949 | ||
950 | if (!kioc->pthru32) { | |
951 | ||
952 | con_log(CL_ANN, (KERN_WARNING | |
953 | "megaraid cmm: out of memory, %s %d\n", | |
954 | __FUNCTION__, __LINE__)); | |
955 | ||
956 | rval = (-ENOMEM); | |
957 | ||
958 | goto pthru_dma_pool_error; | |
959 | } | |
960 | ||
961 | list_add_tail(&kioc->list, &adapter->kioc_pool); | |
962 | } | |
963 | ||
964 | // Setup the dma pools for data buffers | |
965 | if ((rval = mraid_mm_setup_dma_pools(adapter)) != 0) { | |
966 | goto dma_pool_error; | |
967 | } | |
968 | ||
969 | list_add_tail(&adapter->list, &adapters_list_g); | |
970 | ||
971 | adapters_count_g++; | |
972 | ||
973 | return 0; | |
974 | ||
975 | dma_pool_error: | |
976 | /* Do nothing */ | |
977 | ||
978 | pthru_dma_pool_error: | |
979 | ||
980 | for (i = 0; i < lld_adp->max_kioc; i++) { | |
981 | kioc = adapter->kioc_list + i; | |
982 | if (kioc->pthru32) { | |
983 | pci_pool_free(adapter->pthru_dma_pool, kioc->pthru32, | |
984 | kioc->pthru32_h); | |
985 | } | |
986 | } | |
987 | ||
988 | memalloc_error: | |
989 | ||
c9475cb0 JJ |
990 | kfree(adapter->kioc_list); |
991 | kfree(adapter->mbox_list); | |
1da177e4 LT |
992 | |
993 | if (adapter->pthru_dma_pool) | |
994 | pci_pool_destroy(adapter->pthru_dma_pool); | |
995 | ||
c9475cb0 | 996 | kfree(adapter); |
1da177e4 LT |
997 | |
998 | return rval; | |
999 | } | |
1000 | ||
1001 | ||
1002 | /** | |
1003 | * mraid_mm_adapter_app_handle - return the application handle for this adapter | |
a69b74d3 | 1004 | * @unique_id : adapter unique identifier |
1da177e4 | 1005 | * |
a69b74d3 | 1006 | * For the given driver data, locate the adapter in our global list and |
1da177e4 LT |
1007 | * return the corresponding handle, which is also used by applications to |
1008 | * uniquely identify an adapter. | |
1009 | * | |
a69b74d3 RD |
1010 | * Return adapter handle if found in the list. |
1011 | * Return 0 if adapter could not be located, should never happen though. | |
1da177e4 LT |
1012 | */ |
1013 | uint32_t | |
1014 | mraid_mm_adapter_app_handle(uint32_t unique_id) | |
1015 | { | |
1016 | mraid_mmadp_t *adapter; | |
1017 | mraid_mmadp_t *tmp; | |
1018 | int index = 0; | |
1019 | ||
1020 | list_for_each_entry_safe(adapter, tmp, &adapters_list_g, list) { | |
1021 | ||
1022 | if (adapter->unique_id == unique_id) { | |
1023 | ||
1024 | return MKADAP(index); | |
1025 | } | |
1026 | ||
1027 | index++; | |
1028 | } | |
1029 | ||
1030 | return 0; | |
1031 | } | |
1032 | ||
1033 | ||
1034 | /** | |
1035 | * mraid_mm_setup_dma_pools - Set up dma buffer pools per adapter | |
1da177e4 LT |
1036 | * @adp : Adapter softstate |
1037 | * | |
1038 | * We maintain a pool of dma buffers per each adapter. Each pool has one | |
1039 | * buffer. E.g, we may have 5 dma pools - one each for 4k, 8k ... 64k buffers. | |
1040 | * We have just one 4k buffer in 4k pool, one 8k buffer in 8k pool etc. We | |
1041 | * dont' want to waste too much memory by allocating more buffers per each | |
1042 | * pool. | |
1043 | */ | |
1044 | static int | |
1045 | mraid_mm_setup_dma_pools(mraid_mmadp_t *adp) | |
1046 | { | |
1047 | mm_dmapool_t *pool; | |
1048 | int bufsize; | |
1049 | int i; | |
1050 | ||
1051 | /* | |
1052 | * Create MAX_DMA_POOLS number of pools | |
1053 | */ | |
1054 | bufsize = MRAID_MM_INIT_BUFF_SIZE; | |
1055 | ||
1056 | for (i = 0; i < MAX_DMA_POOLS; i++){ | |
1057 | ||
1058 | pool = &adp->dma_pool_list[i]; | |
1059 | ||
1060 | pool->buf_size = bufsize; | |
1061 | spin_lock_init(&pool->lock); | |
1062 | ||
1063 | pool->handle = pci_pool_create("megaraid mm data buffer", | |
1064 | adp->pdev, bufsize, 16, 0); | |
1065 | ||
1066 | if (!pool->handle) { | |
1067 | goto dma_pool_setup_error; | |
1068 | } | |
1069 | ||
1070 | pool->vaddr = pci_pool_alloc(pool->handle, GFP_KERNEL, | |
1071 | &pool->paddr); | |
1072 | ||
1073 | if (!pool->vaddr) | |
1074 | goto dma_pool_setup_error; | |
1075 | ||
1076 | bufsize = bufsize * 2; | |
1077 | } | |
1078 | ||
1079 | return 0; | |
1080 | ||
1081 | dma_pool_setup_error: | |
1082 | ||
1083 | mraid_mm_teardown_dma_pools(adp); | |
1084 | return (-ENOMEM); | |
1085 | } | |
1086 | ||
1087 | ||
a69b74d3 | 1088 | /** |
1da177e4 | 1089 | * mraid_mm_unregister_adp - Unregister routine for low level drivers |
1da177e4 | 1090 | * @unique_id : UID of the adpater |
a69b74d3 RD |
1091 | * |
1092 | * Assumes no outstanding ioctls to llds. | |
1da177e4 LT |
1093 | */ |
1094 | int | |
1095 | mraid_mm_unregister_adp(uint32_t unique_id) | |
1096 | { | |
1097 | mraid_mmadp_t *adapter; | |
1098 | mraid_mmadp_t *tmp; | |
1099 | ||
1100 | list_for_each_entry_safe(adapter, tmp, &adapters_list_g, list) { | |
1101 | ||
1102 | ||
1103 | if (adapter->unique_id == unique_id) { | |
1104 | ||
1105 | adapters_count_g--; | |
1106 | ||
1107 | list_del_init(&adapter->list); | |
1108 | ||
1109 | mraid_mm_free_adp_resources(adapter); | |
1110 | ||
1111 | kfree(adapter); | |
1112 | ||
1113 | con_log(CL_ANN, ( | |
1114 | "megaraid cmm: Unregistered one adapter:%#x\n", | |
1115 | unique_id)); | |
1116 | ||
1117 | return 0; | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | return (-ENODEV); | |
1122 | } | |
1123 | ||
1124 | /** | |
1125 | * mraid_mm_free_adp_resources - Free adapter softstate | |
1da177e4 LT |
1126 | * @adp : Adapter softstate |
1127 | */ | |
1128 | static void | |
1129 | mraid_mm_free_adp_resources(mraid_mmadp_t *adp) | |
1130 | { | |
1131 | uioc_t *kioc; | |
1132 | int i; | |
1133 | ||
1134 | mraid_mm_teardown_dma_pools(adp); | |
1135 | ||
1136 | for (i = 0; i < adp->max_kioc; i++) { | |
1137 | ||
1138 | kioc = adp->kioc_list + i; | |
1139 | ||
1140 | pci_pool_free(adp->pthru_dma_pool, kioc->pthru32, | |
1141 | kioc->pthru32_h); | |
1142 | } | |
1143 | ||
1144 | kfree(adp->kioc_list); | |
1da177e4 LT |
1145 | kfree(adp->mbox_list); |
1146 | ||
1147 | pci_pool_destroy(adp->pthru_dma_pool); | |
1148 | ||
1149 | ||
1150 | return; | |
1151 | } | |
1152 | ||
1153 | ||
1154 | /** | |
1155 | * mraid_mm_teardown_dma_pools - Free all per adapter dma buffers | |
1da177e4 LT |
1156 | * @adp : Adapter softstate |
1157 | */ | |
1158 | static void | |
1159 | mraid_mm_teardown_dma_pools(mraid_mmadp_t *adp) | |
1160 | { | |
1161 | int i; | |
1162 | mm_dmapool_t *pool; | |
1163 | ||
1164 | for (i = 0; i < MAX_DMA_POOLS; i++) { | |
1165 | ||
1166 | pool = &adp->dma_pool_list[i]; | |
1167 | ||
1168 | if (pool->handle) { | |
1169 | ||
1170 | if (pool->vaddr) | |
1171 | pci_pool_free(pool->handle, pool->vaddr, | |
1172 | pool->paddr); | |
1173 | ||
1174 | pci_pool_destroy(pool->handle); | |
1175 | pool->handle = NULL; | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | return; | |
1180 | } | |
1181 | ||
1182 | /** | |
a69b74d3 | 1183 | * mraid_mm_init - Module entry point |
1da177e4 LT |
1184 | */ |
1185 | static int __init | |
1186 | mraid_mm_init(void) | |
1187 | { | |
1188 | // Announce the driver version | |
1189 | con_log(CL_ANN, (KERN_INFO "megaraid cmm: %s %s\n", | |
1190 | LSI_COMMON_MOD_VERSION, LSI_COMMON_MOD_EXT_VERSION)); | |
1191 | ||
1192 | majorno = register_chrdev(0, "megadev", &lsi_fops); | |
1193 | ||
1194 | if (majorno < 0) { | |
1195 | con_log(CL_ANN, ("megaraid cmm: cannot get major\n")); | |
1196 | return majorno; | |
1197 | } | |
1198 | ||
1199 | init_waitqueue_head(&wait_q); | |
1200 | ||
1201 | INIT_LIST_HEAD(&adapters_list_g); | |
1202 | ||
1203 | return 0; | |
1204 | } | |
1205 | ||
1206 | ||
a69b74d3 | 1207 | #ifdef CONFIG_COMPAT |
1da177e4 | 1208 | /** |
a69b74d3 RD |
1209 | * mraid_mm_compat_ioctl - 32bit to 64bit ioctl conversion routine |
1210 | * @filep : file operations pointer (ignored) | |
1211 | * @cmd : ioctl command | |
1212 | * @arg : user ioctl packet | |
1da177e4 | 1213 | */ |
1da177e4 LT |
1214 | static long |
1215 | mraid_mm_compat_ioctl(struct file *filep, unsigned int cmd, | |
1216 | unsigned long arg) | |
1217 | { | |
1218 | int err; | |
672b2d38 | 1219 | |
1da177e4 | 1220 | err = mraid_mm_ioctl(NULL, filep, cmd, arg); |
672b2d38 | 1221 | |
1da177e4 LT |
1222 | return err; |
1223 | } | |
1224 | #endif | |
1225 | ||
1226 | /** | |
a69b74d3 | 1227 | * mraid_mm_exit - Module exit point |
1da177e4 LT |
1228 | */ |
1229 | static void __exit | |
1230 | mraid_mm_exit(void) | |
1231 | { | |
1232 | con_log(CL_DLEVEL1 , ("exiting common mod\n")); | |
1233 | ||
1234 | unregister_chrdev(majorno, "megadev"); | |
1235 | } | |
1236 | ||
1237 | module_init(mraid_mm_init); | |
1238 | module_exit(mraid_mm_exit); | |
1239 | ||
1240 | /* vi: set ts=8 sw=8 tw=78: */ |