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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 | */ | |
e8edc6e0 | 17 | #include <linux/sched.h> |
1da177e4 | 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 | ||
2a4aa2c4 | 62 | static uint32_t drvr_ver = 0x02200207; |
1da177e4 LT |
63 | |
64 | static int adapters_count_g; | |
65 | static struct list_head adapters_list_g; | |
66 | ||
67 | static wait_queue_head_t wait_q; | |
68 | ||
00977a59 | 69 | static const struct file_operations lsi_fops = { |
1da177e4 LT |
70 | .open = mraid_mm_open, |
71 | .ioctl = mraid_mm_ioctl, | |
72 | #ifdef CONFIG_COMPAT | |
73 | .compat_ioctl = mraid_mm_compat_ioctl, | |
74 | #endif | |
75 | .owner = THIS_MODULE, | |
76 | }; | |
77 | ||
90a95af8 TH |
78 | static struct miscdevice megaraid_mm_dev = { |
79 | .minor = MISC_DYNAMIC_MINOR, | |
80 | .name = "megadev0", | |
81 | .fops = &lsi_fops, | |
82 | }; | |
83 | ||
1da177e4 LT |
84 | /** |
85 | * mraid_mm_open - open routine for char node interface | |
a69b74d3 | 86 | * @inode : unused |
1da177e4 LT |
87 | * @filep : unused |
88 | * | |
a69b74d3 | 89 | * Allow ioctl operations by apps only if they have superuser privilege. |
1da177e4 LT |
90 | */ |
91 | static int | |
92 | mraid_mm_open(struct inode *inode, struct file *filep) | |
93 | { | |
94 | /* | |
95 | * Only allow superuser to access private ioctl interface | |
96 | */ | |
97 | if (!capable(CAP_SYS_ADMIN)) return (-EACCES); | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
102 | /** | |
103 | * mraid_mm_ioctl - module entry-point for ioctls | |
104 | * @inode : inode (ignored) | |
105 | * @filep : file operations pointer (ignored) | |
106 | * @cmd : ioctl command | |
107 | * @arg : user ioctl packet | |
108 | */ | |
109 | static int | |
110 | mraid_mm_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, | |
111 | unsigned long arg) | |
112 | { | |
113 | uioc_t *kioc; | |
114 | char signature[EXT_IOCTL_SIGN_SZ] = {0}; | |
115 | int rval; | |
116 | mraid_mmadp_t *adp; | |
117 | uint8_t old_ioctl; | |
118 | int drvrcmd_rval; | |
119 | void __user *argp = (void __user *)arg; | |
120 | ||
121 | /* | |
122 | * Make sure only USCSICMD are issued through this interface. | |
123 | * MIMD application would still fire different command. | |
124 | */ | |
125 | ||
126 | if ((_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD)) { | |
127 | return (-EINVAL); | |
128 | } | |
129 | ||
130 | /* | |
131 | * Look for signature to see if this is the new or old ioctl format. | |
132 | */ | |
133 | if (copy_from_user(signature, argp, EXT_IOCTL_SIGN_SZ)) { | |
134 | con_log(CL_ANN, (KERN_WARNING | |
135 | "megaraid cmm: copy from usr addr failed\n")); | |
136 | return (-EFAULT); | |
137 | } | |
138 | ||
139 | if (memcmp(signature, EXT_IOCTL_SIGN, EXT_IOCTL_SIGN_SZ) == 0) | |
140 | old_ioctl = 0; | |
141 | else | |
142 | old_ioctl = 1; | |
143 | ||
144 | /* | |
145 | * At present, we don't support the new ioctl packet | |
146 | */ | |
147 | if (!old_ioctl ) | |
148 | return (-EINVAL); | |
149 | ||
150 | /* | |
151 | * If it is a driver ioctl (as opposed to fw ioctls), then we can | |
152 | * handle the command locally. rval > 0 means it is not a drvr cmd | |
153 | */ | |
154 | rval = handle_drvrcmd(argp, old_ioctl, &drvrcmd_rval); | |
155 | ||
156 | if (rval < 0) | |
157 | return rval; | |
158 | else if (rval == 0) | |
159 | return drvrcmd_rval; | |
160 | ||
161 | rval = 0; | |
162 | if ((adp = mraid_mm_get_adapter(argp, &rval)) == NULL) { | |
163 | return rval; | |
164 | } | |
165 | ||
166 | /* | |
167 | * Check if adapter can accept ioctl. We may have marked it offline | |
168 | * if any previous kioc had timedout on this controller. | |
169 | */ | |
170 | if (!adp->quiescent) { | |
171 | con_log(CL_ANN, (KERN_WARNING | |
172 | "megaraid cmm: controller cannot accept cmds due to " | |
173 | "earlier errors\n" )); | |
174 | return -EFAULT; | |
175 | } | |
176 | ||
177 | /* | |
178 | * The following call will block till a kioc is available | |
179 | */ | |
180 | kioc = mraid_mm_alloc_kioc(adp); | |
181 | ||
182 | /* | |
183 | * User sent the old mimd_t ioctl packet. Convert it to uioc_t. | |
184 | */ | |
185 | if ((rval = mimd_to_kioc(argp, adp, kioc))) { | |
186 | mraid_mm_dealloc_kioc(adp, kioc); | |
187 | return rval; | |
188 | } | |
189 | ||
190 | kioc->done = ioctl_done; | |
191 | ||
192 | /* | |
193 | * Issue the IOCTL to the low level driver. After the IOCTL completes | |
194 | * release the kioc if and only if it was _not_ timedout. If it was | |
195 | * timedout, that means that resources are still with low level driver. | |
196 | */ | |
197 | if ((rval = lld_ioctl(adp, kioc))) { | |
198 | ||
199 | if (!kioc->timedout) | |
200 | mraid_mm_dealloc_kioc(adp, kioc); | |
201 | ||
202 | return rval; | |
203 | } | |
204 | ||
205 | /* | |
206 | * Convert the kioc back to user space | |
207 | */ | |
208 | rval = kioc_to_mimd(kioc, argp); | |
209 | ||
210 | /* | |
211 | * Return the kioc to free pool | |
212 | */ | |
213 | mraid_mm_dealloc_kioc(adp, kioc); | |
214 | ||
215 | return rval; | |
216 | } | |
217 | ||
218 | ||
219 | /** | |
220 | * mraid_mm_get_adapter - Returns corresponding adapters for the mimd packet | |
221 | * @umimd : User space mimd_t ioctl packet | |
a69b74d3 RD |
222 | * @rval : returned success/error status |
223 | * | |
224 | * The function return value is a pointer to the located @adapter. | |
1da177e4 LT |
225 | */ |
226 | static mraid_mmadp_t * | |
227 | mraid_mm_get_adapter(mimd_t __user *umimd, int *rval) | |
228 | { | |
229 | mraid_mmadp_t *adapter; | |
230 | mimd_t mimd; | |
231 | uint32_t adapno; | |
232 | int iterator; | |
233 | ||
234 | ||
235 | if (copy_from_user(&mimd, umimd, sizeof(mimd_t))) { | |
236 | *rval = -EFAULT; | |
237 | return NULL; | |
238 | } | |
239 | ||
240 | adapno = GETADAP(mimd.ui.fcs.adapno); | |
241 | ||
242 | if (adapno >= adapters_count_g) { | |
243 | *rval = -ENODEV; | |
244 | return NULL; | |
245 | } | |
246 | ||
247 | adapter = NULL; | |
248 | iterator = 0; | |
249 | ||
250 | list_for_each_entry(adapter, &adapters_list_g, list) { | |
251 | if (iterator++ == adapno) break; | |
252 | } | |
253 | ||
254 | if (!adapter) { | |
255 | *rval = -ENODEV; | |
256 | return NULL; | |
257 | } | |
258 | ||
259 | return adapter; | |
260 | } | |
261 | ||
a69b74d3 RD |
262 | /** |
263 | * handle_drvrcmd - Checks if the opcode is a driver cmd and if it is, handles it. | |
1da177e4 LT |
264 | * @arg : packet sent by the user app |
265 | * @old_ioctl : mimd if 1; uioc otherwise | |
a69b74d3 | 266 | * @rval : pointer for command's returned value (not function status) |
1da177e4 LT |
267 | */ |
268 | static int | |
269 | handle_drvrcmd(void __user *arg, uint8_t old_ioctl, int *rval) | |
270 | { | |
271 | mimd_t __user *umimd; | |
272 | mimd_t kmimd; | |
273 | uint8_t opcode; | |
274 | uint8_t subopcode; | |
275 | ||
276 | if (old_ioctl) | |
277 | goto old_packet; | |
278 | else | |
279 | goto new_packet; | |
280 | ||
281 | new_packet: | |
282 | return (-ENOTSUPP); | |
283 | ||
284 | old_packet: | |
285 | *rval = 0; | |
286 | umimd = arg; | |
287 | ||
288 | if (copy_from_user(&kmimd, umimd, sizeof(mimd_t))) | |
289 | return (-EFAULT); | |
290 | ||
291 | opcode = kmimd.ui.fcs.opcode; | |
292 | subopcode = kmimd.ui.fcs.subopcode; | |
293 | ||
294 | /* | |
295 | * If the opcode is 0x82 and the subopcode is either GET_DRVRVER or | |
296 | * GET_NUMADP, then we can handle. Otherwise we should return 1 to | |
297 | * indicate that we cannot handle this. | |
298 | */ | |
299 | if (opcode != 0x82) | |
300 | return 1; | |
301 | ||
302 | switch (subopcode) { | |
303 | ||
304 | case MEGAIOC_QDRVRVER: | |
305 | ||
306 | if (copy_to_user(kmimd.data, &drvr_ver, sizeof(uint32_t))) | |
307 | return (-EFAULT); | |
308 | ||
309 | return 0; | |
310 | ||
311 | case MEGAIOC_QNADAP: | |
312 | ||
313 | *rval = adapters_count_g; | |
314 | ||
315 | if (copy_to_user(kmimd.data, &adapters_count_g, | |
316 | sizeof(uint32_t))) | |
317 | return (-EFAULT); | |
318 | ||
319 | return 0; | |
320 | ||
321 | default: | |
322 | /* cannot handle */ | |
323 | return 1; | |
324 | } | |
325 | ||
326 | return 0; | |
327 | } | |
328 | ||
329 | ||
330 | /** | |
331 | * mimd_to_kioc - Converter from old to new ioctl format | |
1da177e4 | 332 | * @umimd : user space old MIMD IOCTL |
a69b74d3 | 333 | * @adp : adapter softstate |
1da177e4 LT |
334 | * @kioc : kernel space new format IOCTL |
335 | * | |
336 | * Routine to convert MIMD interface IOCTL to new interface IOCTL packet. The | |
337 | * new packet is in kernel space so that driver can perform operations on it | |
338 | * freely. | |
339 | */ | |
340 | ||
341 | static int | |
342 | mimd_to_kioc(mimd_t __user *umimd, mraid_mmadp_t *adp, uioc_t *kioc) | |
343 | { | |
344 | mbox64_t *mbox64; | |
345 | mbox_t *mbox; | |
346 | mraid_passthru_t *pthru32; | |
347 | uint32_t adapno; | |
348 | uint8_t opcode; | |
349 | uint8_t subopcode; | |
350 | mimd_t mimd; | |
351 | ||
352 | if (copy_from_user(&mimd, umimd, sizeof(mimd_t))) | |
353 | return (-EFAULT); | |
354 | ||
355 | /* | |
356 | * Applications are not allowed to send extd pthru | |
357 | */ | |
358 | if ((mimd.mbox[0] == MBOXCMD_PASSTHRU64) || | |
359 | (mimd.mbox[0] == MBOXCMD_EXTPTHRU)) | |
360 | return (-EINVAL); | |
361 | ||
362 | opcode = mimd.ui.fcs.opcode; | |
363 | subopcode = mimd.ui.fcs.subopcode; | |
364 | adapno = GETADAP(mimd.ui.fcs.adapno); | |
365 | ||
366 | if (adapno >= adapters_count_g) | |
367 | return (-ENODEV); | |
368 | ||
369 | kioc->adapno = adapno; | |
370 | kioc->mb_type = MBOX_LEGACY; | |
371 | kioc->app_type = APPTYPE_MIMD; | |
372 | ||
373 | switch (opcode) { | |
374 | ||
375 | case 0x82: | |
376 | ||
377 | if (subopcode == MEGAIOC_QADAPINFO) { | |
378 | ||
379 | kioc->opcode = GET_ADAP_INFO; | |
380 | kioc->data_dir = UIOC_RD; | |
381 | kioc->xferlen = sizeof(mraid_hba_info_t); | |
382 | ||
383 | if (mraid_mm_attach_buf(adp, kioc, kioc->xferlen)) | |
384 | return (-ENOMEM); | |
385 | } | |
386 | else { | |
387 | con_log(CL_ANN, (KERN_WARNING | |
388 | "megaraid cmm: Invalid subop\n")); | |
389 | return (-EINVAL); | |
390 | } | |
391 | ||
392 | break; | |
393 | ||
394 | case 0x81: | |
395 | ||
396 | kioc->opcode = MBOX_CMD; | |
397 | kioc->xferlen = mimd.ui.fcs.length; | |
398 | kioc->user_data_len = kioc->xferlen; | |
399 | kioc->user_data = mimd.ui.fcs.buffer; | |
400 | ||
401 | if (mraid_mm_attach_buf(adp, kioc, kioc->xferlen)) | |
402 | return (-ENOMEM); | |
403 | ||
404 | if (mimd.outlen) kioc->data_dir = UIOC_RD; | |
405 | if (mimd.inlen) kioc->data_dir |= UIOC_WR; | |
406 | ||
407 | break; | |
408 | ||
409 | case 0x80: | |
410 | ||
411 | kioc->opcode = MBOX_CMD; | |
412 | kioc->xferlen = (mimd.outlen > mimd.inlen) ? | |
413 | mimd.outlen : mimd.inlen; | |
414 | kioc->user_data_len = kioc->xferlen; | |
415 | kioc->user_data = mimd.data; | |
416 | ||
417 | if (mraid_mm_attach_buf(adp, kioc, kioc->xferlen)) | |
418 | return (-ENOMEM); | |
419 | ||
420 | if (mimd.outlen) kioc->data_dir = UIOC_RD; | |
421 | if (mimd.inlen) kioc->data_dir |= UIOC_WR; | |
422 | ||
423 | break; | |
424 | ||
425 | default: | |
426 | return (-EINVAL); | |
427 | } | |
428 | ||
429 | /* | |
430 | * If driver command, nothing else to do | |
431 | */ | |
432 | if (opcode == 0x82) | |
433 | return 0; | |
434 | ||
435 | /* | |
436 | * This is a mailbox cmd; copy the mailbox from mimd | |
437 | */ | |
438 | mbox64 = (mbox64_t *)((unsigned long)kioc->cmdbuf); | |
439 | mbox = &mbox64->mbox32; | |
440 | memcpy(mbox, mimd.mbox, 14); | |
441 | ||
442 | if (mbox->cmd != MBOXCMD_PASSTHRU) { // regular DCMD | |
443 | ||
444 | mbox->xferaddr = (uint32_t)kioc->buf_paddr; | |
445 | ||
446 | if (kioc->data_dir & UIOC_WR) { | |
447 | if (copy_from_user(kioc->buf_vaddr, kioc->user_data, | |
448 | kioc->xferlen)) { | |
449 | return (-EFAULT); | |
450 | } | |
451 | } | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
456 | /* | |
457 | * This is a regular 32-bit pthru cmd; mbox points to pthru struct. | |
458 | * Just like in above case, the beginning for memblk is treated as | |
459 | * a mailbox. The passthru will begin at next 1K boundary. And the | |
460 | * data will start 1K after that. | |
461 | */ | |
462 | pthru32 = kioc->pthru32; | |
463 | kioc->user_pthru = &umimd->pthru; | |
464 | mbox->xferaddr = (uint32_t)kioc->pthru32_h; | |
465 | ||
466 | if (copy_from_user(pthru32, kioc->user_pthru, | |
467 | sizeof(mraid_passthru_t))) { | |
468 | return (-EFAULT); | |
469 | } | |
470 | ||
471 | pthru32->dataxferaddr = kioc->buf_paddr; | |
472 | if (kioc->data_dir & UIOC_WR) { | |
473 | if (copy_from_user(kioc->buf_vaddr, kioc->user_data, | |
474 | pthru32->dataxferlen)) { | |
475 | return (-EFAULT); | |
476 | } | |
477 | } | |
478 | ||
479 | return 0; | |
480 | } | |
481 | ||
482 | /** | |
483 | * mraid_mm_attch_buf - Attach a free dma buffer for required size | |
1da177e4 LT |
484 | * @adp : Adapter softstate |
485 | * @kioc : kioc that the buffer needs to be attached to | |
486 | * @xferlen : required length for buffer | |
487 | * | |
488 | * First we search for a pool with smallest buffer that is >= @xferlen. If | |
489 | * that pool has no free buffer, we will try for the next bigger size. If none | |
490 | * is available, we will try to allocate the smallest buffer that is >= | |
491 | * @xferlen and attach it the pool. | |
492 | */ | |
493 | static int | |
494 | mraid_mm_attach_buf(mraid_mmadp_t *adp, uioc_t *kioc, int xferlen) | |
495 | { | |
496 | mm_dmapool_t *pool; | |
497 | int right_pool = -1; | |
498 | unsigned long flags; | |
499 | int i; | |
500 | ||
501 | kioc->pool_index = -1; | |
502 | kioc->buf_vaddr = NULL; | |
503 | kioc->buf_paddr = 0; | |
504 | kioc->free_buf = 0; | |
505 | ||
506 | /* | |
507 | * We need xferlen amount of memory. See if we can get it from our | |
508 | * dma pools. If we don't get exact size, we will try bigger buffer | |
509 | */ | |
510 | ||
511 | for (i = 0; i < MAX_DMA_POOLS; i++) { | |
512 | ||
513 | pool = &adp->dma_pool_list[i]; | |
514 | ||
515 | if (xferlen > pool->buf_size) | |
516 | continue; | |
517 | ||
518 | if (right_pool == -1) | |
519 | right_pool = i; | |
520 | ||
521 | spin_lock_irqsave(&pool->lock, flags); | |
522 | ||
523 | if (!pool->in_use) { | |
524 | ||
525 | pool->in_use = 1; | |
526 | kioc->pool_index = i; | |
527 | kioc->buf_vaddr = pool->vaddr; | |
528 | kioc->buf_paddr = pool->paddr; | |
529 | ||
530 | spin_unlock_irqrestore(&pool->lock, flags); | |
531 | return 0; | |
532 | } | |
533 | else { | |
534 | spin_unlock_irqrestore(&pool->lock, flags); | |
535 | continue; | |
536 | } | |
537 | } | |
538 | ||
539 | /* | |
540 | * If xferlen doesn't match any of our pools, return error | |
541 | */ | |
542 | if (right_pool == -1) | |
543 | return -EINVAL; | |
544 | ||
545 | /* | |
546 | * We did not get any buffer from the preallocated pool. Let us try | |
547 | * to allocate one new buffer. NOTE: This is a blocking call. | |
548 | */ | |
549 | pool = &adp->dma_pool_list[right_pool]; | |
550 | ||
551 | spin_lock_irqsave(&pool->lock, flags); | |
552 | ||
553 | kioc->pool_index = right_pool; | |
554 | kioc->free_buf = 1; | |
555 | kioc->buf_vaddr = pci_pool_alloc(pool->handle, GFP_KERNEL, | |
556 | &kioc->buf_paddr); | |
557 | spin_unlock_irqrestore(&pool->lock, flags); | |
558 | ||
559 | if (!kioc->buf_vaddr) | |
560 | return -ENOMEM; | |
561 | ||
562 | return 0; | |
563 | } | |
564 | ||
565 | /** | |
566 | * mraid_mm_alloc_kioc - Returns a uioc_t from free list | |
567 | * @adp : Adapter softstate for this module | |
568 | * | |
569 | * The kioc_semaphore is initialized with number of kioc nodes in the | |
570 | * free kioc pool. If the kioc pool is empty, this function blocks till | |
571 | * a kioc becomes free. | |
572 | */ | |
573 | static uioc_t * | |
574 | mraid_mm_alloc_kioc(mraid_mmadp_t *adp) | |
575 | { | |
576 | uioc_t *kioc; | |
577 | struct list_head* head; | |
578 | unsigned long flags; | |
579 | ||
580 | down(&adp->kioc_semaphore); | |
581 | ||
582 | spin_lock_irqsave(&adp->kioc_pool_lock, flags); | |
583 | ||
584 | head = &adp->kioc_pool; | |
585 | ||
586 | if (list_empty(head)) { | |
587 | up(&adp->kioc_semaphore); | |
588 | spin_unlock_irqrestore(&adp->kioc_pool_lock, flags); | |
589 | ||
590 | con_log(CL_ANN, ("megaraid cmm: kioc list empty!\n")); | |
591 | return NULL; | |
592 | } | |
593 | ||
594 | kioc = list_entry(head->next, uioc_t, list); | |
595 | list_del_init(&kioc->list); | |
596 | ||
597 | spin_unlock_irqrestore(&adp->kioc_pool_lock, flags); | |
598 | ||
599 | memset((caddr_t)(unsigned long)kioc->cmdbuf, 0, sizeof(mbox64_t)); | |
600 | memset((caddr_t) kioc->pthru32, 0, sizeof(mraid_passthru_t)); | |
601 | ||
602 | kioc->buf_vaddr = NULL; | |
603 | kioc->buf_paddr = 0; | |
604 | kioc->pool_index =-1; | |
605 | kioc->free_buf = 0; | |
606 | kioc->user_data = NULL; | |
607 | kioc->user_data_len = 0; | |
608 | kioc->user_pthru = NULL; | |
609 | kioc->timedout = 0; | |
610 | ||
611 | return kioc; | |
612 | } | |
613 | ||
614 | /** | |
615 | * mraid_mm_dealloc_kioc - Return kioc to free pool | |
1da177e4 LT |
616 | * @adp : Adapter softstate |
617 | * @kioc : uioc_t node to be returned to free pool | |
618 | */ | |
619 | static void | |
620 | mraid_mm_dealloc_kioc(mraid_mmadp_t *adp, uioc_t *kioc) | |
621 | { | |
622 | mm_dmapool_t *pool; | |
623 | unsigned long flags; | |
624 | ||
625 | if (kioc->pool_index != -1) { | |
626 | pool = &adp->dma_pool_list[kioc->pool_index]; | |
627 | ||
628 | /* This routine may be called in non-isr context also */ | |
629 | spin_lock_irqsave(&pool->lock, flags); | |
630 | ||
631 | /* | |
632 | * While attaching the dma buffer, if we didn't get the | |
633 | * required buffer from the pool, we would have allocated | |
634 | * it at the run time and set the free_buf flag. We must | |
635 | * free that buffer. Otherwise, just mark that the buffer is | |
636 | * not in use | |
637 | */ | |
638 | if (kioc->free_buf == 1) | |
639 | pci_pool_free(pool->handle, kioc->buf_vaddr, | |
640 | kioc->buf_paddr); | |
641 | else | |
642 | pool->in_use = 0; | |
643 | ||
644 | spin_unlock_irqrestore(&pool->lock, flags); | |
645 | } | |
646 | ||
647 | /* Return the kioc to the free pool */ | |
648 | spin_lock_irqsave(&adp->kioc_pool_lock, flags); | |
649 | list_add(&kioc->list, &adp->kioc_pool); | |
650 | spin_unlock_irqrestore(&adp->kioc_pool_lock, flags); | |
651 | ||
652 | /* increment the free kioc count */ | |
653 | up(&adp->kioc_semaphore); | |
654 | ||
655 | return; | |
656 | } | |
657 | ||
658 | /** | |
659 | * lld_ioctl - Routine to issue ioctl to low level drvr | |
1da177e4 LT |
660 | * @adp : The adapter handle |
661 | * @kioc : The ioctl packet with kernel addresses | |
662 | */ | |
663 | static int | |
664 | lld_ioctl(mraid_mmadp_t *adp, uioc_t *kioc) | |
665 | { | |
666 | int rval; | |
667 | struct timer_list timer; | |
668 | struct timer_list *tp = NULL; | |
669 | ||
670 | kioc->status = -ENODATA; | |
671 | rval = adp->issue_uioc(adp->drvr_data, kioc, IOCTL_ISSUE); | |
672 | ||
673 | if (rval) return rval; | |
674 | ||
675 | /* | |
676 | * Start the timer | |
677 | */ | |
678 | if (adp->timeout > 0) { | |
679 | tp = &timer; | |
680 | init_timer(tp); | |
681 | ||
682 | tp->function = lld_timedout; | |
683 | tp->data = (unsigned long)kioc; | |
684 | tp->expires = jiffies + adp->timeout * HZ; | |
685 | ||
686 | add_timer(tp); | |
687 | } | |
688 | ||
689 | /* | |
690 | * Wait till the low level driver completes the ioctl. After this | |
691 | * call, the ioctl either completed successfully or timedout. | |
692 | */ | |
693 | wait_event(wait_q, (kioc->status != -ENODATA)); | |
694 | if (tp) { | |
695 | del_timer_sync(tp); | |
696 | } | |
697 | ||
698 | /* | |
699 | * If the command had timedout, we mark the controller offline | |
700 | * before returning | |
701 | */ | |
702 | if (kioc->timedout) { | |
703 | adp->quiescent = 0; | |
704 | } | |
705 | ||
706 | return kioc->status; | |
707 | } | |
708 | ||
709 | ||
710 | /** | |
711 | * ioctl_done - callback from the low level driver | |
1da177e4 LT |
712 | * @kioc : completed ioctl packet |
713 | */ | |
714 | static void | |
715 | ioctl_done(uioc_t *kioc) | |
716 | { | |
717 | uint32_t adapno; | |
718 | int iterator; | |
719 | mraid_mmadp_t* adapter; | |
720 | ||
721 | /* | |
722 | * When the kioc returns from driver, make sure it still doesn't | |
723 | * have ENODATA in status. Otherwise, driver will hang on wait_event | |
724 | * forever | |
725 | */ | |
726 | if (kioc->status == -ENODATA) { | |
727 | con_log(CL_ANN, (KERN_WARNING | |
728 | "megaraid cmm: lld didn't change status!\n")); | |
729 | ||
730 | kioc->status = -EINVAL; | |
731 | } | |
732 | ||
733 | /* | |
734 | * Check if this kioc was timedout before. If so, nobody is waiting | |
735 | * on this kioc. We don't have to wake up anybody. Instead, we just | |
736 | * have to free the kioc | |
737 | */ | |
738 | if (kioc->timedout) { | |
739 | iterator = 0; | |
740 | adapter = NULL; | |
741 | adapno = kioc->adapno; | |
742 | ||
743 | con_log(CL_ANN, ( KERN_WARNING "megaraid cmm: completed " | |
744 | "ioctl that was timedout before\n")); | |
745 | ||
746 | list_for_each_entry(adapter, &adapters_list_g, list) { | |
747 | if (iterator++ == adapno) break; | |
748 | } | |
749 | ||
750 | kioc->timedout = 0; | |
751 | ||
752 | if (adapter) { | |
753 | mraid_mm_dealloc_kioc( adapter, kioc ); | |
754 | } | |
755 | } | |
756 | else { | |
757 | wake_up(&wait_q); | |
758 | } | |
759 | } | |
760 | ||
761 | ||
a69b74d3 RD |
762 | /** |
763 | * lld_timedout - callback from the expired timer | |
1da177e4 LT |
764 | * @ptr : ioctl packet that timed out |
765 | */ | |
766 | static void | |
767 | lld_timedout(unsigned long ptr) | |
768 | { | |
769 | uioc_t *kioc = (uioc_t *)ptr; | |
770 | ||
771 | kioc->status = -ETIME; | |
772 | kioc->timedout = 1; | |
773 | ||
774 | con_log(CL_ANN, (KERN_WARNING "megaraid cmm: ioctl timed out\n")); | |
775 | ||
776 | wake_up(&wait_q); | |
777 | } | |
778 | ||
779 | ||
780 | /** | |
a69b74d3 | 781 | * kioc_to_mimd - Converter from new back to old format |
1da177e4 LT |
782 | * @kioc : Kernel space IOCTL packet (successfully issued) |
783 | * @mimd : User space MIMD packet | |
784 | */ | |
785 | static int | |
786 | kioc_to_mimd(uioc_t *kioc, mimd_t __user *mimd) | |
787 | { | |
788 | mimd_t kmimd; | |
789 | uint8_t opcode; | |
790 | uint8_t subopcode; | |
791 | ||
792 | mbox64_t *mbox64; | |
793 | mraid_passthru_t __user *upthru32; | |
794 | mraid_passthru_t *kpthru32; | |
795 | mcontroller_t cinfo; | |
796 | mraid_hba_info_t *hinfo; | |
797 | ||
798 | ||
799 | if (copy_from_user(&kmimd, mimd, sizeof(mimd_t))) | |
800 | return (-EFAULT); | |
801 | ||
802 | opcode = kmimd.ui.fcs.opcode; | |
803 | subopcode = kmimd.ui.fcs.subopcode; | |
804 | ||
805 | if (opcode == 0x82) { | |
806 | switch (subopcode) { | |
807 | ||
808 | case MEGAIOC_QADAPINFO: | |
809 | ||
810 | hinfo = (mraid_hba_info_t *)(unsigned long) | |
811 | kioc->buf_vaddr; | |
812 | ||
813 | hinfo_to_cinfo(hinfo, &cinfo); | |
814 | ||
815 | if (copy_to_user(kmimd.data, &cinfo, sizeof(cinfo))) | |
816 | return (-EFAULT); | |
817 | ||
818 | return 0; | |
819 | ||
820 | default: | |
821 | return (-EINVAL); | |
822 | } | |
823 | ||
824 | return 0; | |
825 | } | |
826 | ||
827 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; | |
828 | ||
829 | if (kioc->user_pthru) { | |
830 | ||
831 | upthru32 = kioc->user_pthru; | |
832 | kpthru32 = kioc->pthru32; | |
833 | ||
834 | if (copy_to_user(&upthru32->scsistatus, | |
835 | &kpthru32->scsistatus, | |
836 | sizeof(uint8_t))) { | |
837 | return (-EFAULT); | |
838 | } | |
839 | } | |
840 | ||
841 | if (kioc->user_data) { | |
842 | if (copy_to_user(kioc->user_data, kioc->buf_vaddr, | |
843 | kioc->user_data_len)) { | |
844 | return (-EFAULT); | |
845 | } | |
846 | } | |
847 | ||
848 | if (copy_to_user(&mimd->mbox[17], | |
849 | &mbox64->mbox32.status, sizeof(uint8_t))) { | |
850 | return (-EFAULT); | |
851 | } | |
852 | ||
853 | return 0; | |
854 | } | |
855 | ||
856 | ||
857 | /** | |
858 | * hinfo_to_cinfo - Convert new format hba info into old format | |
1da177e4 LT |
859 | * @hinfo : New format, more comprehensive adapter info |
860 | * @cinfo : Old format adapter info to support mimd_t apps | |
861 | */ | |
862 | static void | |
863 | hinfo_to_cinfo(mraid_hba_info_t *hinfo, mcontroller_t *cinfo) | |
864 | { | |
865 | if (!hinfo || !cinfo) | |
866 | return; | |
867 | ||
868 | cinfo->base = hinfo->baseport; | |
869 | cinfo->irq = hinfo->irq; | |
870 | cinfo->numldrv = hinfo->num_ldrv; | |
871 | cinfo->pcibus = hinfo->pci_bus; | |
872 | cinfo->pcidev = hinfo->pci_slot; | |
873 | cinfo->pcifun = PCI_FUNC(hinfo->pci_dev_fn); | |
874 | cinfo->pciid = hinfo->pci_device_id; | |
875 | cinfo->pcivendor = hinfo->pci_vendor_id; | |
876 | cinfo->pcislot = hinfo->pci_slot; | |
877 | cinfo->uid = hinfo->unique_id; | |
878 | } | |
879 | ||
880 | ||
a69b74d3 RD |
881 | /** |
882 | * mraid_mm_register_adp - Registration routine for low level drivers | |
883 | * @lld_adp : Adapter objejct | |
1da177e4 LT |
884 | */ |
885 | int | |
886 | mraid_mm_register_adp(mraid_mmadp_t *lld_adp) | |
887 | { | |
888 | mraid_mmadp_t *adapter; | |
889 | mbox64_t *mbox_list; | |
890 | uioc_t *kioc; | |
891 | uint32_t rval; | |
892 | int i; | |
893 | ||
894 | ||
895 | if (lld_adp->drvr_type != DRVRTYPE_MBOX) | |
896 | return (-EINVAL); | |
897 | ||
dd00cc48 | 898 | adapter = kzalloc(sizeof(mraid_mmadp_t), GFP_KERNEL); |
1da177e4 | 899 | |
5236467a AB |
900 | if (!adapter) |
901 | return -ENOMEM; | |
1da177e4 | 902 | |
1da177e4 LT |
903 | |
904 | adapter->unique_id = lld_adp->unique_id; | |
905 | adapter->drvr_type = lld_adp->drvr_type; | |
906 | adapter->drvr_data = lld_adp->drvr_data; | |
907 | adapter->pdev = lld_adp->pdev; | |
908 | adapter->issue_uioc = lld_adp->issue_uioc; | |
909 | adapter->timeout = lld_adp->timeout; | |
910 | adapter->max_kioc = lld_adp->max_kioc; | |
911 | adapter->quiescent = 1; | |
912 | ||
913 | /* | |
914 | * Allocate single blocks of memory for all required kiocs, | |
915 | * mailboxes and passthru structures. | |
916 | */ | |
917 | adapter->kioc_list = kmalloc(sizeof(uioc_t) * lld_adp->max_kioc, | |
918 | GFP_KERNEL); | |
919 | adapter->mbox_list = kmalloc(sizeof(mbox64_t) * lld_adp->max_kioc, | |
920 | GFP_KERNEL); | |
921 | adapter->pthru_dma_pool = pci_pool_create("megaraid mm pthru pool", | |
922 | adapter->pdev, | |
923 | sizeof(mraid_passthru_t), | |
924 | 16, 0); | |
925 | ||
926 | if (!adapter->kioc_list || !adapter->mbox_list || | |
927 | !adapter->pthru_dma_pool) { | |
928 | ||
929 | con_log(CL_ANN, (KERN_WARNING | |
930 | "megaraid cmm: out of memory, %s %d\n", __FUNCTION__, | |
931 | __LINE__)); | |
932 | ||
933 | rval = (-ENOMEM); | |
934 | ||
935 | goto memalloc_error; | |
936 | } | |
937 | ||
938 | /* | |
939 | * Slice kioc_list and make a kioc_pool with the individiual kiocs | |
940 | */ | |
941 | INIT_LIST_HEAD(&adapter->kioc_pool); | |
942 | spin_lock_init(&adapter->kioc_pool_lock); | |
943 | sema_init(&adapter->kioc_semaphore, lld_adp->max_kioc); | |
944 | ||
945 | mbox_list = (mbox64_t *)adapter->mbox_list; | |
946 | ||
947 | for (i = 0; i < lld_adp->max_kioc; i++) { | |
948 | ||
949 | kioc = adapter->kioc_list + i; | |
950 | kioc->cmdbuf = (uint64_t)(unsigned long)(mbox_list + i); | |
951 | kioc->pthru32 = pci_pool_alloc(adapter->pthru_dma_pool, | |
952 | GFP_KERNEL, &kioc->pthru32_h); | |
953 | ||
954 | if (!kioc->pthru32) { | |
955 | ||
956 | con_log(CL_ANN, (KERN_WARNING | |
957 | "megaraid cmm: out of memory, %s %d\n", | |
958 | __FUNCTION__, __LINE__)); | |
959 | ||
960 | rval = (-ENOMEM); | |
961 | ||
962 | goto pthru_dma_pool_error; | |
963 | } | |
964 | ||
965 | list_add_tail(&kioc->list, &adapter->kioc_pool); | |
966 | } | |
967 | ||
968 | // Setup the dma pools for data buffers | |
969 | if ((rval = mraid_mm_setup_dma_pools(adapter)) != 0) { | |
970 | goto dma_pool_error; | |
971 | } | |
972 | ||
973 | list_add_tail(&adapter->list, &adapters_list_g); | |
974 | ||
975 | adapters_count_g++; | |
976 | ||
977 | return 0; | |
978 | ||
979 | dma_pool_error: | |
980 | /* Do nothing */ | |
981 | ||
982 | pthru_dma_pool_error: | |
983 | ||
984 | for (i = 0; i < lld_adp->max_kioc; i++) { | |
985 | kioc = adapter->kioc_list + i; | |
986 | if (kioc->pthru32) { | |
987 | pci_pool_free(adapter->pthru_dma_pool, kioc->pthru32, | |
988 | kioc->pthru32_h); | |
989 | } | |
990 | } | |
991 | ||
992 | memalloc_error: | |
993 | ||
c9475cb0 JJ |
994 | kfree(adapter->kioc_list); |
995 | kfree(adapter->mbox_list); | |
1da177e4 LT |
996 | |
997 | if (adapter->pthru_dma_pool) | |
998 | pci_pool_destroy(adapter->pthru_dma_pool); | |
999 | ||
c9475cb0 | 1000 | kfree(adapter); |
1da177e4 LT |
1001 | |
1002 | return rval; | |
1003 | } | |
1004 | ||
1005 | ||
1006 | /** | |
1007 | * mraid_mm_adapter_app_handle - return the application handle for this adapter | |
a69b74d3 | 1008 | * @unique_id : adapter unique identifier |
1da177e4 | 1009 | * |
a69b74d3 | 1010 | * For the given driver data, locate the adapter in our global list and |
1da177e4 LT |
1011 | * return the corresponding handle, which is also used by applications to |
1012 | * uniquely identify an adapter. | |
1013 | * | |
a69b74d3 RD |
1014 | * Return adapter handle if found in the list. |
1015 | * Return 0 if adapter could not be located, should never happen though. | |
1da177e4 LT |
1016 | */ |
1017 | uint32_t | |
1018 | mraid_mm_adapter_app_handle(uint32_t unique_id) | |
1019 | { | |
1020 | mraid_mmadp_t *adapter; | |
1021 | mraid_mmadp_t *tmp; | |
1022 | int index = 0; | |
1023 | ||
1024 | list_for_each_entry_safe(adapter, tmp, &adapters_list_g, list) { | |
1025 | ||
1026 | if (adapter->unique_id == unique_id) { | |
1027 | ||
1028 | return MKADAP(index); | |
1029 | } | |
1030 | ||
1031 | index++; | |
1032 | } | |
1033 | ||
1034 | return 0; | |
1035 | } | |
1036 | ||
1037 | ||
1038 | /** | |
1039 | * mraid_mm_setup_dma_pools - Set up dma buffer pools per adapter | |
1da177e4 LT |
1040 | * @adp : Adapter softstate |
1041 | * | |
1042 | * We maintain a pool of dma buffers per each adapter. Each pool has one | |
1043 | * buffer. E.g, we may have 5 dma pools - one each for 4k, 8k ... 64k buffers. | |
1044 | * We have just one 4k buffer in 4k pool, one 8k buffer in 8k pool etc. We | |
1045 | * dont' want to waste too much memory by allocating more buffers per each | |
1046 | * pool. | |
1047 | */ | |
1048 | static int | |
1049 | mraid_mm_setup_dma_pools(mraid_mmadp_t *adp) | |
1050 | { | |
1051 | mm_dmapool_t *pool; | |
1052 | int bufsize; | |
1053 | int i; | |
1054 | ||
1055 | /* | |
1056 | * Create MAX_DMA_POOLS number of pools | |
1057 | */ | |
1058 | bufsize = MRAID_MM_INIT_BUFF_SIZE; | |
1059 | ||
1060 | for (i = 0; i < MAX_DMA_POOLS; i++){ | |
1061 | ||
1062 | pool = &adp->dma_pool_list[i]; | |
1063 | ||
1064 | pool->buf_size = bufsize; | |
1065 | spin_lock_init(&pool->lock); | |
1066 | ||
1067 | pool->handle = pci_pool_create("megaraid mm data buffer", | |
1068 | adp->pdev, bufsize, 16, 0); | |
1069 | ||
1070 | if (!pool->handle) { | |
1071 | goto dma_pool_setup_error; | |
1072 | } | |
1073 | ||
1074 | pool->vaddr = pci_pool_alloc(pool->handle, GFP_KERNEL, | |
1075 | &pool->paddr); | |
1076 | ||
1077 | if (!pool->vaddr) | |
1078 | goto dma_pool_setup_error; | |
1079 | ||
1080 | bufsize = bufsize * 2; | |
1081 | } | |
1082 | ||
1083 | return 0; | |
1084 | ||
1085 | dma_pool_setup_error: | |
1086 | ||
1087 | mraid_mm_teardown_dma_pools(adp); | |
1088 | return (-ENOMEM); | |
1089 | } | |
1090 | ||
1091 | ||
a69b74d3 | 1092 | /** |
1da177e4 | 1093 | * mraid_mm_unregister_adp - Unregister routine for low level drivers |
1da177e4 | 1094 | * @unique_id : UID of the adpater |
a69b74d3 RD |
1095 | * |
1096 | * Assumes no outstanding ioctls to llds. | |
1da177e4 LT |
1097 | */ |
1098 | int | |
1099 | mraid_mm_unregister_adp(uint32_t unique_id) | |
1100 | { | |
1101 | mraid_mmadp_t *adapter; | |
1102 | mraid_mmadp_t *tmp; | |
1103 | ||
1104 | list_for_each_entry_safe(adapter, tmp, &adapters_list_g, list) { | |
1105 | ||
1106 | ||
1107 | if (adapter->unique_id == unique_id) { | |
1108 | ||
1109 | adapters_count_g--; | |
1110 | ||
1111 | list_del_init(&adapter->list); | |
1112 | ||
1113 | mraid_mm_free_adp_resources(adapter); | |
1114 | ||
1115 | kfree(adapter); | |
1116 | ||
1117 | con_log(CL_ANN, ( | |
1118 | "megaraid cmm: Unregistered one adapter:%#x\n", | |
1119 | unique_id)); | |
1120 | ||
1121 | return 0; | |
1122 | } | |
1123 | } | |
1124 | ||
1125 | return (-ENODEV); | |
1126 | } | |
1127 | ||
1128 | /** | |
1129 | * mraid_mm_free_adp_resources - Free adapter softstate | |
1da177e4 LT |
1130 | * @adp : Adapter softstate |
1131 | */ | |
1132 | static void | |
1133 | mraid_mm_free_adp_resources(mraid_mmadp_t *adp) | |
1134 | { | |
1135 | uioc_t *kioc; | |
1136 | int i; | |
1137 | ||
1138 | mraid_mm_teardown_dma_pools(adp); | |
1139 | ||
1140 | for (i = 0; i < adp->max_kioc; i++) { | |
1141 | ||
1142 | kioc = adp->kioc_list + i; | |
1143 | ||
1144 | pci_pool_free(adp->pthru_dma_pool, kioc->pthru32, | |
1145 | kioc->pthru32_h); | |
1146 | } | |
1147 | ||
1148 | kfree(adp->kioc_list); | |
1da177e4 LT |
1149 | kfree(adp->mbox_list); |
1150 | ||
1151 | pci_pool_destroy(adp->pthru_dma_pool); | |
1152 | ||
1153 | ||
1154 | return; | |
1155 | } | |
1156 | ||
1157 | ||
1158 | /** | |
1159 | * mraid_mm_teardown_dma_pools - Free all per adapter dma buffers | |
1da177e4 LT |
1160 | * @adp : Adapter softstate |
1161 | */ | |
1162 | static void | |
1163 | mraid_mm_teardown_dma_pools(mraid_mmadp_t *adp) | |
1164 | { | |
1165 | int i; | |
1166 | mm_dmapool_t *pool; | |
1167 | ||
1168 | for (i = 0; i < MAX_DMA_POOLS; i++) { | |
1169 | ||
1170 | pool = &adp->dma_pool_list[i]; | |
1171 | ||
1172 | if (pool->handle) { | |
1173 | ||
1174 | if (pool->vaddr) | |
1175 | pci_pool_free(pool->handle, pool->vaddr, | |
1176 | pool->paddr); | |
1177 | ||
1178 | pci_pool_destroy(pool->handle); | |
1179 | pool->handle = NULL; | |
1180 | } | |
1181 | } | |
1182 | ||
1183 | return; | |
1184 | } | |
1185 | ||
1186 | /** | |
a69b74d3 | 1187 | * mraid_mm_init - Module entry point |
1da177e4 LT |
1188 | */ |
1189 | static int __init | |
1190 | mraid_mm_init(void) | |
1191 | { | |
90a95af8 TH |
1192 | int err; |
1193 | ||
1da177e4 LT |
1194 | // Announce the driver version |
1195 | con_log(CL_ANN, (KERN_INFO "megaraid cmm: %s %s\n", | |
1196 | LSI_COMMON_MOD_VERSION, LSI_COMMON_MOD_EXT_VERSION)); | |
1197 | ||
90a95af8 TH |
1198 | err = misc_register(&megaraid_mm_dev); |
1199 | if (err < 0) { | |
1200 | con_log(CL_ANN, ("megaraid cmm: cannot register misc device\n")); | |
1201 | return err; | |
1da177e4 LT |
1202 | } |
1203 | ||
1204 | init_waitqueue_head(&wait_q); | |
1205 | ||
1206 | INIT_LIST_HEAD(&adapters_list_g); | |
1207 | ||
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | ||
a69b74d3 | 1212 | #ifdef CONFIG_COMPAT |
1da177e4 | 1213 | /** |
a69b74d3 RD |
1214 | * mraid_mm_compat_ioctl - 32bit to 64bit ioctl conversion routine |
1215 | * @filep : file operations pointer (ignored) | |
1216 | * @cmd : ioctl command | |
1217 | * @arg : user ioctl packet | |
1da177e4 | 1218 | */ |
1da177e4 LT |
1219 | static long |
1220 | mraid_mm_compat_ioctl(struct file *filep, unsigned int cmd, | |
1221 | unsigned long arg) | |
1222 | { | |
1223 | int err; | |
672b2d38 | 1224 | |
1da177e4 | 1225 | err = mraid_mm_ioctl(NULL, filep, cmd, arg); |
672b2d38 | 1226 | |
1da177e4 LT |
1227 | return err; |
1228 | } | |
1229 | #endif | |
1230 | ||
1231 | /** | |
a69b74d3 | 1232 | * mraid_mm_exit - Module exit point |
1da177e4 LT |
1233 | */ |
1234 | static void __exit | |
1235 | mraid_mm_exit(void) | |
1236 | { | |
1237 | con_log(CL_DLEVEL1 , ("exiting common mod\n")); | |
1238 | ||
90a95af8 | 1239 | misc_deregister(&megaraid_mm_dev); |
1da177e4 LT |
1240 | } |
1241 | ||
1242 | module_init(mraid_mm_init); | |
1243 | module_exit(mraid_mm_exit); | |
1244 | ||
1245 | /* vi: set ts=8 sw=8 tw=78: */ |