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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> |
f18f81da | 18 | #include <linux/smp_lock.h> |
1da177e4 | 19 | #include "megaraid_mm.h" |
1da177e4 LT |
20 | |
21 | ||
22 | // Entry points for char node driver | |
23 | static int mraid_mm_open(struct inode *, struct file *); | |
24 | static int mraid_mm_ioctl(struct inode *, struct file *, uint, unsigned long); | |
25 | ||
26 | ||
27 | // routines to convert to and from the old the format | |
28 | static int mimd_to_kioc(mimd_t __user *, mraid_mmadp_t *, uioc_t *); | |
29 | static int kioc_to_mimd(uioc_t *, mimd_t __user *); | |
30 | ||
31 | ||
32 | // Helper functions | |
33 | static int handle_drvrcmd(void __user *, uint8_t, int *); | |
34 | static int lld_ioctl(mraid_mmadp_t *, uioc_t *); | |
35 | static void ioctl_done(uioc_t *); | |
36 | static void lld_timedout(unsigned long); | |
37 | static void hinfo_to_cinfo(mraid_hba_info_t *, mcontroller_t *); | |
38 | static mraid_mmadp_t *mraid_mm_get_adapter(mimd_t __user *, int *); | |
39 | static uioc_t *mraid_mm_alloc_kioc(mraid_mmadp_t *); | |
40 | static void mraid_mm_dealloc_kioc(mraid_mmadp_t *, uioc_t *); | |
41 | static int mraid_mm_attach_buf(mraid_mmadp_t *, uioc_t *, int); | |
42 | static int mraid_mm_setup_dma_pools(mraid_mmadp_t *); | |
43 | static void mraid_mm_free_adp_resources(mraid_mmadp_t *); | |
44 | static void mraid_mm_teardown_dma_pools(mraid_mmadp_t *); | |
45 | ||
46 | #ifdef CONFIG_COMPAT | |
47 | static long mraid_mm_compat_ioctl(struct file *, unsigned int, unsigned long); | |
48 | #endif | |
49 | ||
50 | MODULE_AUTHOR("LSI Logic Corporation"); | |
51 | MODULE_DESCRIPTION("LSI Logic Management Module"); | |
52 | MODULE_LICENSE("GPL"); | |
53 | MODULE_VERSION(LSI_COMMON_MOD_VERSION); | |
54 | ||
55 | static int dbglevel = CL_ANN; | |
56 | module_param_named(dlevel, dbglevel, int, 0); | |
57 | MODULE_PARM_DESC(dlevel, "Debug level (default=0)"); | |
58 | ||
59 | EXPORT_SYMBOL(mraid_mm_register_adp); | |
60 | EXPORT_SYMBOL(mraid_mm_unregister_adp); | |
61 | EXPORT_SYMBOL(mraid_mm_adapter_app_handle); | |
62 | ||
2a4aa2c4 | 63 | static uint32_t drvr_ver = 0x02200207; |
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 | ||
90a95af8 TH |
79 | static struct miscdevice megaraid_mm_dev = { |
80 | .minor = MISC_DYNAMIC_MINOR, | |
81 | .name = "megadev0", | |
82 | .fops = &lsi_fops, | |
83 | }; | |
84 | ||
1da177e4 LT |
85 | /** |
86 | * mraid_mm_open - open routine for char node interface | |
a69b74d3 | 87 | * @inode : unused |
1da177e4 LT |
88 | * @filep : unused |
89 | * | |
a69b74d3 | 90 | * Allow ioctl operations by apps only if they have superuser privilege. |
1da177e4 LT |
91 | */ |
92 | static int | |
93 | mraid_mm_open(struct inode *inode, struct file *filep) | |
94 | { | |
95 | /* | |
96 | * Only allow superuser to access private ioctl interface | |
97 | */ | |
98 | if (!capable(CAP_SYS_ADMIN)) return (-EACCES); | |
99 | ||
f18f81da | 100 | cycle_kernel_lock(); |
1da177e4 LT |
101 | return 0; |
102 | } | |
103 | ||
104 | /** | |
105 | * mraid_mm_ioctl - module entry-point for ioctls | |
106 | * @inode : inode (ignored) | |
107 | * @filep : file operations pointer (ignored) | |
108 | * @cmd : ioctl command | |
109 | * @arg : user ioctl packet | |
110 | */ | |
111 | static int | |
112 | mraid_mm_ioctl(struct inode *inode, struct file *filep, unsigned int cmd, | |
113 | unsigned long arg) | |
114 | { | |
115 | uioc_t *kioc; | |
116 | char signature[EXT_IOCTL_SIGN_SZ] = {0}; | |
117 | int rval; | |
118 | mraid_mmadp_t *adp; | |
119 | uint8_t old_ioctl; | |
120 | int drvrcmd_rval; | |
121 | void __user *argp = (void __user *)arg; | |
122 | ||
123 | /* | |
124 | * Make sure only USCSICMD are issued through this interface. | |
125 | * MIMD application would still fire different command. | |
126 | */ | |
127 | ||
128 | if ((_IOC_TYPE(cmd) != MEGAIOC_MAGIC) && (cmd != USCSICMD)) { | |
129 | return (-EINVAL); | |
130 | } | |
131 | ||
132 | /* | |
133 | * Look for signature to see if this is the new or old ioctl format. | |
134 | */ | |
135 | if (copy_from_user(signature, argp, EXT_IOCTL_SIGN_SZ)) { | |
136 | con_log(CL_ANN, (KERN_WARNING | |
137 | "megaraid cmm: copy from usr addr failed\n")); | |
138 | return (-EFAULT); | |
139 | } | |
140 | ||
141 | if (memcmp(signature, EXT_IOCTL_SIGN, EXT_IOCTL_SIGN_SZ) == 0) | |
142 | old_ioctl = 0; | |
143 | else | |
144 | old_ioctl = 1; | |
145 | ||
146 | /* | |
147 | * At present, we don't support the new ioctl packet | |
148 | */ | |
149 | if (!old_ioctl ) | |
150 | return (-EINVAL); | |
151 | ||
152 | /* | |
153 | * If it is a driver ioctl (as opposed to fw ioctls), then we can | |
154 | * handle the command locally. rval > 0 means it is not a drvr cmd | |
155 | */ | |
156 | rval = handle_drvrcmd(argp, old_ioctl, &drvrcmd_rval); | |
157 | ||
158 | if (rval < 0) | |
159 | return rval; | |
160 | else if (rval == 0) | |
161 | return drvrcmd_rval; | |
162 | ||
163 | rval = 0; | |
164 | if ((adp = mraid_mm_get_adapter(argp, &rval)) == NULL) { | |
165 | return rval; | |
166 | } | |
167 | ||
168 | /* | |
169 | * Check if adapter can accept ioctl. We may have marked it offline | |
170 | * if any previous kioc had timedout on this controller. | |
171 | */ | |
172 | if (!adp->quiescent) { | |
173 | con_log(CL_ANN, (KERN_WARNING | |
174 | "megaraid cmm: controller cannot accept cmds due to " | |
175 | "earlier errors\n" )); | |
176 | return -EFAULT; | |
177 | } | |
178 | ||
179 | /* | |
180 | * The following call will block till a kioc is available | |
181 | */ | |
182 | kioc = mraid_mm_alloc_kioc(adp); | |
183 | ||
184 | /* | |
185 | * User sent the old mimd_t ioctl packet. Convert it to uioc_t. | |
186 | */ | |
187 | if ((rval = mimd_to_kioc(argp, adp, kioc))) { | |
188 | mraid_mm_dealloc_kioc(adp, kioc); | |
189 | return rval; | |
190 | } | |
191 | ||
192 | kioc->done = ioctl_done; | |
193 | ||
194 | /* | |
195 | * Issue the IOCTL to the low level driver. After the IOCTL completes | |
196 | * release the kioc if and only if it was _not_ timedout. If it was | |
197 | * timedout, that means that resources are still with low level driver. | |
198 | */ | |
199 | if ((rval = lld_ioctl(adp, kioc))) { | |
200 | ||
201 | if (!kioc->timedout) | |
202 | mraid_mm_dealloc_kioc(adp, kioc); | |
203 | ||
204 | return rval; | |
205 | } | |
206 | ||
207 | /* | |
208 | * Convert the kioc back to user space | |
209 | */ | |
210 | rval = kioc_to_mimd(kioc, argp); | |
211 | ||
212 | /* | |
213 | * Return the kioc to free pool | |
214 | */ | |
215 | mraid_mm_dealloc_kioc(adp, kioc); | |
216 | ||
217 | return rval; | |
218 | } | |
219 | ||
220 | ||
221 | /** | |
222 | * mraid_mm_get_adapter - Returns corresponding adapters for the mimd packet | |
223 | * @umimd : User space mimd_t ioctl packet | |
a69b74d3 RD |
224 | * @rval : returned success/error status |
225 | * | |
226 | * The function return value is a pointer to the located @adapter. | |
1da177e4 LT |
227 | */ |
228 | static mraid_mmadp_t * | |
229 | mraid_mm_get_adapter(mimd_t __user *umimd, int *rval) | |
230 | { | |
231 | mraid_mmadp_t *adapter; | |
232 | mimd_t mimd; | |
233 | uint32_t adapno; | |
234 | int iterator; | |
235 | ||
236 | ||
237 | if (copy_from_user(&mimd, umimd, sizeof(mimd_t))) { | |
238 | *rval = -EFAULT; | |
239 | return NULL; | |
240 | } | |
241 | ||
242 | adapno = GETADAP(mimd.ui.fcs.adapno); | |
243 | ||
244 | if (adapno >= adapters_count_g) { | |
245 | *rval = -ENODEV; | |
246 | return NULL; | |
247 | } | |
248 | ||
249 | adapter = NULL; | |
250 | iterator = 0; | |
251 | ||
252 | list_for_each_entry(adapter, &adapters_list_g, list) { | |
253 | if (iterator++ == adapno) break; | |
254 | } | |
255 | ||
256 | if (!adapter) { | |
257 | *rval = -ENODEV; | |
258 | return NULL; | |
259 | } | |
260 | ||
261 | return adapter; | |
262 | } | |
263 | ||
a69b74d3 RD |
264 | /** |
265 | * handle_drvrcmd - Checks if the opcode is a driver cmd and if it is, handles it. | |
1da177e4 LT |
266 | * @arg : packet sent by the user app |
267 | * @old_ioctl : mimd if 1; uioc otherwise | |
a69b74d3 | 268 | * @rval : pointer for command's returned value (not function status) |
1da177e4 LT |
269 | */ |
270 | static int | |
271 | handle_drvrcmd(void __user *arg, uint8_t old_ioctl, int *rval) | |
272 | { | |
273 | mimd_t __user *umimd; | |
274 | mimd_t kmimd; | |
275 | uint8_t opcode; | |
276 | uint8_t subopcode; | |
277 | ||
278 | if (old_ioctl) | |
279 | goto old_packet; | |
280 | else | |
281 | goto new_packet; | |
282 | ||
283 | new_packet: | |
284 | return (-ENOTSUPP); | |
285 | ||
286 | old_packet: | |
287 | *rval = 0; | |
288 | umimd = arg; | |
289 | ||
290 | if (copy_from_user(&kmimd, umimd, sizeof(mimd_t))) | |
291 | return (-EFAULT); | |
292 | ||
293 | opcode = kmimd.ui.fcs.opcode; | |
294 | subopcode = kmimd.ui.fcs.subopcode; | |
295 | ||
296 | /* | |
297 | * If the opcode is 0x82 and the subopcode is either GET_DRVRVER or | |
298 | * GET_NUMADP, then we can handle. Otherwise we should return 1 to | |
299 | * indicate that we cannot handle this. | |
300 | */ | |
301 | if (opcode != 0x82) | |
302 | return 1; | |
303 | ||
304 | switch (subopcode) { | |
305 | ||
306 | case MEGAIOC_QDRVRVER: | |
307 | ||
308 | if (copy_to_user(kmimd.data, &drvr_ver, sizeof(uint32_t))) | |
309 | return (-EFAULT); | |
310 | ||
311 | return 0; | |
312 | ||
313 | case MEGAIOC_QNADAP: | |
314 | ||
315 | *rval = adapters_count_g; | |
316 | ||
317 | if (copy_to_user(kmimd.data, &adapters_count_g, | |
318 | sizeof(uint32_t))) | |
319 | return (-EFAULT); | |
320 | ||
321 | return 0; | |
322 | ||
323 | default: | |
324 | /* cannot handle */ | |
325 | return 1; | |
326 | } | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
331 | ||
332 | /** | |
333 | * mimd_to_kioc - Converter from old to new ioctl format | |
1da177e4 | 334 | * @umimd : user space old MIMD IOCTL |
a69b74d3 | 335 | * @adp : adapter softstate |
1da177e4 LT |
336 | * @kioc : kernel space new format IOCTL |
337 | * | |
338 | * Routine to convert MIMD interface IOCTL to new interface IOCTL packet. The | |
339 | * new packet is in kernel space so that driver can perform operations on it | |
340 | * freely. | |
341 | */ | |
342 | ||
343 | static int | |
344 | mimd_to_kioc(mimd_t __user *umimd, mraid_mmadp_t *adp, uioc_t *kioc) | |
345 | { | |
346 | mbox64_t *mbox64; | |
347 | mbox_t *mbox; | |
348 | mraid_passthru_t *pthru32; | |
349 | uint32_t adapno; | |
350 | uint8_t opcode; | |
351 | uint8_t subopcode; | |
352 | mimd_t mimd; | |
353 | ||
354 | if (copy_from_user(&mimd, umimd, sizeof(mimd_t))) | |
355 | return (-EFAULT); | |
356 | ||
357 | /* | |
358 | * Applications are not allowed to send extd pthru | |
359 | */ | |
360 | if ((mimd.mbox[0] == MBOXCMD_PASSTHRU64) || | |
361 | (mimd.mbox[0] == MBOXCMD_EXTPTHRU)) | |
362 | return (-EINVAL); | |
363 | ||
364 | opcode = mimd.ui.fcs.opcode; | |
365 | subopcode = mimd.ui.fcs.subopcode; | |
366 | adapno = GETADAP(mimd.ui.fcs.adapno); | |
367 | ||
368 | if (adapno >= adapters_count_g) | |
369 | return (-ENODEV); | |
370 | ||
371 | kioc->adapno = adapno; | |
372 | kioc->mb_type = MBOX_LEGACY; | |
373 | kioc->app_type = APPTYPE_MIMD; | |
374 | ||
375 | switch (opcode) { | |
376 | ||
377 | case 0x82: | |
378 | ||
379 | if (subopcode == MEGAIOC_QADAPINFO) { | |
380 | ||
381 | kioc->opcode = GET_ADAP_INFO; | |
382 | kioc->data_dir = UIOC_RD; | |
383 | kioc->xferlen = sizeof(mraid_hba_info_t); | |
384 | ||
385 | if (mraid_mm_attach_buf(adp, kioc, kioc->xferlen)) | |
386 | return (-ENOMEM); | |
387 | } | |
388 | else { | |
389 | con_log(CL_ANN, (KERN_WARNING | |
390 | "megaraid cmm: Invalid subop\n")); | |
391 | return (-EINVAL); | |
392 | } | |
393 | ||
394 | break; | |
395 | ||
396 | case 0x81: | |
397 | ||
398 | kioc->opcode = MBOX_CMD; | |
399 | kioc->xferlen = mimd.ui.fcs.length; | |
400 | kioc->user_data_len = kioc->xferlen; | |
401 | kioc->user_data = mimd.ui.fcs.buffer; | |
402 | ||
403 | if (mraid_mm_attach_buf(adp, kioc, kioc->xferlen)) | |
404 | return (-ENOMEM); | |
405 | ||
406 | if (mimd.outlen) kioc->data_dir = UIOC_RD; | |
407 | if (mimd.inlen) kioc->data_dir |= UIOC_WR; | |
408 | ||
409 | break; | |
410 | ||
411 | case 0x80: | |
412 | ||
413 | kioc->opcode = MBOX_CMD; | |
414 | kioc->xferlen = (mimd.outlen > mimd.inlen) ? | |
415 | mimd.outlen : mimd.inlen; | |
416 | kioc->user_data_len = kioc->xferlen; | |
417 | kioc->user_data = mimd.data; | |
418 | ||
419 | if (mraid_mm_attach_buf(adp, kioc, kioc->xferlen)) | |
420 | return (-ENOMEM); | |
421 | ||
422 | if (mimd.outlen) kioc->data_dir = UIOC_RD; | |
423 | if (mimd.inlen) kioc->data_dir |= UIOC_WR; | |
424 | ||
425 | break; | |
426 | ||
427 | default: | |
428 | return (-EINVAL); | |
429 | } | |
430 | ||
431 | /* | |
432 | * If driver command, nothing else to do | |
433 | */ | |
434 | if (opcode == 0x82) | |
435 | return 0; | |
436 | ||
437 | /* | |
438 | * This is a mailbox cmd; copy the mailbox from mimd | |
439 | */ | |
440 | mbox64 = (mbox64_t *)((unsigned long)kioc->cmdbuf); | |
441 | mbox = &mbox64->mbox32; | |
442 | memcpy(mbox, mimd.mbox, 14); | |
443 | ||
444 | if (mbox->cmd != MBOXCMD_PASSTHRU) { // regular DCMD | |
445 | ||
446 | mbox->xferaddr = (uint32_t)kioc->buf_paddr; | |
447 | ||
448 | if (kioc->data_dir & UIOC_WR) { | |
449 | if (copy_from_user(kioc->buf_vaddr, kioc->user_data, | |
450 | kioc->xferlen)) { | |
451 | return (-EFAULT); | |
452 | } | |
453 | } | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
458 | /* | |
459 | * This is a regular 32-bit pthru cmd; mbox points to pthru struct. | |
460 | * Just like in above case, the beginning for memblk is treated as | |
461 | * a mailbox. The passthru will begin at next 1K boundary. And the | |
462 | * data will start 1K after that. | |
463 | */ | |
464 | pthru32 = kioc->pthru32; | |
465 | kioc->user_pthru = &umimd->pthru; | |
466 | mbox->xferaddr = (uint32_t)kioc->pthru32_h; | |
467 | ||
468 | if (copy_from_user(pthru32, kioc->user_pthru, | |
469 | sizeof(mraid_passthru_t))) { | |
470 | return (-EFAULT); | |
471 | } | |
472 | ||
473 | pthru32->dataxferaddr = kioc->buf_paddr; | |
474 | if (kioc->data_dir & UIOC_WR) { | |
475 | if (copy_from_user(kioc->buf_vaddr, kioc->user_data, | |
476 | pthru32->dataxferlen)) { | |
477 | return (-EFAULT); | |
478 | } | |
479 | } | |
480 | ||
481 | return 0; | |
482 | } | |
483 | ||
484 | /** | |
485 | * mraid_mm_attch_buf - Attach a free dma buffer for required size | |
1da177e4 LT |
486 | * @adp : Adapter softstate |
487 | * @kioc : kioc that the buffer needs to be attached to | |
488 | * @xferlen : required length for buffer | |
489 | * | |
490 | * First we search for a pool with smallest buffer that is >= @xferlen. If | |
491 | * that pool has no free buffer, we will try for the next bigger size. If none | |
492 | * is available, we will try to allocate the smallest buffer that is >= | |
493 | * @xferlen and attach it the pool. | |
494 | */ | |
495 | static int | |
496 | mraid_mm_attach_buf(mraid_mmadp_t *adp, uioc_t *kioc, int xferlen) | |
497 | { | |
498 | mm_dmapool_t *pool; | |
499 | int right_pool = -1; | |
500 | unsigned long flags; | |
501 | int i; | |
502 | ||
503 | kioc->pool_index = -1; | |
504 | kioc->buf_vaddr = NULL; | |
505 | kioc->buf_paddr = 0; | |
506 | kioc->free_buf = 0; | |
507 | ||
508 | /* | |
509 | * We need xferlen amount of memory. See if we can get it from our | |
510 | * dma pools. If we don't get exact size, we will try bigger buffer | |
511 | */ | |
512 | ||
513 | for (i = 0; i < MAX_DMA_POOLS; i++) { | |
514 | ||
515 | pool = &adp->dma_pool_list[i]; | |
516 | ||
517 | if (xferlen > pool->buf_size) | |
518 | continue; | |
519 | ||
520 | if (right_pool == -1) | |
521 | right_pool = i; | |
522 | ||
523 | spin_lock_irqsave(&pool->lock, flags); | |
524 | ||
525 | if (!pool->in_use) { | |
526 | ||
527 | pool->in_use = 1; | |
528 | kioc->pool_index = i; | |
529 | kioc->buf_vaddr = pool->vaddr; | |
530 | kioc->buf_paddr = pool->paddr; | |
531 | ||
532 | spin_unlock_irqrestore(&pool->lock, flags); | |
533 | return 0; | |
534 | } | |
535 | else { | |
536 | spin_unlock_irqrestore(&pool->lock, flags); | |
537 | continue; | |
538 | } | |
539 | } | |
540 | ||
541 | /* | |
542 | * If xferlen doesn't match any of our pools, return error | |
543 | */ | |
544 | if (right_pool == -1) | |
545 | return -EINVAL; | |
546 | ||
547 | /* | |
548 | * We did not get any buffer from the preallocated pool. Let us try | |
549 | * to allocate one new buffer. NOTE: This is a blocking call. | |
550 | */ | |
551 | pool = &adp->dma_pool_list[right_pool]; | |
552 | ||
553 | spin_lock_irqsave(&pool->lock, flags); | |
554 | ||
555 | kioc->pool_index = right_pool; | |
556 | kioc->free_buf = 1; | |
557 | kioc->buf_vaddr = pci_pool_alloc(pool->handle, GFP_KERNEL, | |
558 | &kioc->buf_paddr); | |
559 | spin_unlock_irqrestore(&pool->lock, flags); | |
560 | ||
561 | if (!kioc->buf_vaddr) | |
562 | return -ENOMEM; | |
563 | ||
564 | return 0; | |
565 | } | |
566 | ||
567 | /** | |
568 | * mraid_mm_alloc_kioc - Returns a uioc_t from free list | |
569 | * @adp : Adapter softstate for this module | |
570 | * | |
571 | * The kioc_semaphore is initialized with number of kioc nodes in the | |
572 | * free kioc pool. If the kioc pool is empty, this function blocks till | |
573 | * a kioc becomes free. | |
574 | */ | |
575 | static uioc_t * | |
576 | mraid_mm_alloc_kioc(mraid_mmadp_t *adp) | |
577 | { | |
578 | uioc_t *kioc; | |
579 | struct list_head* head; | |
580 | unsigned long flags; | |
581 | ||
582 | down(&adp->kioc_semaphore); | |
583 | ||
584 | spin_lock_irqsave(&adp->kioc_pool_lock, flags); | |
585 | ||
586 | head = &adp->kioc_pool; | |
587 | ||
588 | if (list_empty(head)) { | |
589 | up(&adp->kioc_semaphore); | |
590 | spin_unlock_irqrestore(&adp->kioc_pool_lock, flags); | |
591 | ||
592 | con_log(CL_ANN, ("megaraid cmm: kioc list empty!\n")); | |
593 | return NULL; | |
594 | } | |
595 | ||
596 | kioc = list_entry(head->next, uioc_t, list); | |
597 | list_del_init(&kioc->list); | |
598 | ||
599 | spin_unlock_irqrestore(&adp->kioc_pool_lock, flags); | |
600 | ||
601 | memset((caddr_t)(unsigned long)kioc->cmdbuf, 0, sizeof(mbox64_t)); | |
602 | memset((caddr_t) kioc->pthru32, 0, sizeof(mraid_passthru_t)); | |
603 | ||
604 | kioc->buf_vaddr = NULL; | |
605 | kioc->buf_paddr = 0; | |
606 | kioc->pool_index =-1; | |
607 | kioc->free_buf = 0; | |
608 | kioc->user_data = NULL; | |
609 | kioc->user_data_len = 0; | |
610 | kioc->user_pthru = NULL; | |
611 | kioc->timedout = 0; | |
612 | ||
613 | return kioc; | |
614 | } | |
615 | ||
616 | /** | |
617 | * mraid_mm_dealloc_kioc - Return kioc to free pool | |
1da177e4 LT |
618 | * @adp : Adapter softstate |
619 | * @kioc : uioc_t node to be returned to free pool | |
620 | */ | |
621 | static void | |
622 | mraid_mm_dealloc_kioc(mraid_mmadp_t *adp, uioc_t *kioc) | |
623 | { | |
624 | mm_dmapool_t *pool; | |
625 | unsigned long flags; | |
626 | ||
627 | if (kioc->pool_index != -1) { | |
628 | pool = &adp->dma_pool_list[kioc->pool_index]; | |
629 | ||
630 | /* This routine may be called in non-isr context also */ | |
631 | spin_lock_irqsave(&pool->lock, flags); | |
632 | ||
633 | /* | |
634 | * While attaching the dma buffer, if we didn't get the | |
635 | * required buffer from the pool, we would have allocated | |
636 | * it at the run time and set the free_buf flag. We must | |
637 | * free that buffer. Otherwise, just mark that the buffer is | |
638 | * not in use | |
639 | */ | |
640 | if (kioc->free_buf == 1) | |
641 | pci_pool_free(pool->handle, kioc->buf_vaddr, | |
642 | kioc->buf_paddr); | |
643 | else | |
644 | pool->in_use = 0; | |
645 | ||
646 | spin_unlock_irqrestore(&pool->lock, flags); | |
647 | } | |
648 | ||
649 | /* Return the kioc to the free pool */ | |
650 | spin_lock_irqsave(&adp->kioc_pool_lock, flags); | |
651 | list_add(&kioc->list, &adp->kioc_pool); | |
652 | spin_unlock_irqrestore(&adp->kioc_pool_lock, flags); | |
653 | ||
654 | /* increment the free kioc count */ | |
655 | up(&adp->kioc_semaphore); | |
656 | ||
657 | return; | |
658 | } | |
659 | ||
660 | /** | |
661 | * lld_ioctl - Routine to issue ioctl to low level drvr | |
1da177e4 LT |
662 | * @adp : The adapter handle |
663 | * @kioc : The ioctl packet with kernel addresses | |
664 | */ | |
665 | static int | |
666 | lld_ioctl(mraid_mmadp_t *adp, uioc_t *kioc) | |
667 | { | |
668 | int rval; | |
669 | struct timer_list timer; | |
670 | struct timer_list *tp = NULL; | |
671 | ||
672 | kioc->status = -ENODATA; | |
673 | rval = adp->issue_uioc(adp->drvr_data, kioc, IOCTL_ISSUE); | |
674 | ||
675 | if (rval) return rval; | |
676 | ||
677 | /* | |
678 | * Start the timer | |
679 | */ | |
680 | if (adp->timeout > 0) { | |
681 | tp = &timer; | |
682 | init_timer(tp); | |
683 | ||
684 | tp->function = lld_timedout; | |
685 | tp->data = (unsigned long)kioc; | |
686 | tp->expires = jiffies + adp->timeout * HZ; | |
687 | ||
688 | add_timer(tp); | |
689 | } | |
690 | ||
691 | /* | |
692 | * Wait till the low level driver completes the ioctl. After this | |
693 | * call, the ioctl either completed successfully or timedout. | |
694 | */ | |
695 | wait_event(wait_q, (kioc->status != -ENODATA)); | |
696 | if (tp) { | |
697 | del_timer_sync(tp); | |
698 | } | |
699 | ||
700 | /* | |
701 | * If the command had timedout, we mark the controller offline | |
702 | * before returning | |
703 | */ | |
704 | if (kioc->timedout) { | |
705 | adp->quiescent = 0; | |
706 | } | |
707 | ||
708 | return kioc->status; | |
709 | } | |
710 | ||
711 | ||
712 | /** | |
713 | * ioctl_done - callback from the low level driver | |
1da177e4 LT |
714 | * @kioc : completed ioctl packet |
715 | */ | |
716 | static void | |
717 | ioctl_done(uioc_t *kioc) | |
718 | { | |
719 | uint32_t adapno; | |
720 | int iterator; | |
721 | mraid_mmadp_t* adapter; | |
722 | ||
723 | /* | |
724 | * When the kioc returns from driver, make sure it still doesn't | |
725 | * have ENODATA in status. Otherwise, driver will hang on wait_event | |
726 | * forever | |
727 | */ | |
728 | if (kioc->status == -ENODATA) { | |
729 | con_log(CL_ANN, (KERN_WARNING | |
730 | "megaraid cmm: lld didn't change status!\n")); | |
731 | ||
732 | kioc->status = -EINVAL; | |
733 | } | |
734 | ||
735 | /* | |
736 | * Check if this kioc was timedout before. If so, nobody is waiting | |
737 | * on this kioc. We don't have to wake up anybody. Instead, we just | |
738 | * have to free the kioc | |
739 | */ | |
740 | if (kioc->timedout) { | |
741 | iterator = 0; | |
742 | adapter = NULL; | |
743 | adapno = kioc->adapno; | |
744 | ||
745 | con_log(CL_ANN, ( KERN_WARNING "megaraid cmm: completed " | |
746 | "ioctl that was timedout before\n")); | |
747 | ||
748 | list_for_each_entry(adapter, &adapters_list_g, list) { | |
749 | if (iterator++ == adapno) break; | |
750 | } | |
751 | ||
752 | kioc->timedout = 0; | |
753 | ||
754 | if (adapter) { | |
755 | mraid_mm_dealloc_kioc( adapter, kioc ); | |
756 | } | |
757 | } | |
758 | else { | |
759 | wake_up(&wait_q); | |
760 | } | |
761 | } | |
762 | ||
763 | ||
a69b74d3 RD |
764 | /** |
765 | * lld_timedout - callback from the expired timer | |
1da177e4 LT |
766 | * @ptr : ioctl packet that timed out |
767 | */ | |
768 | static void | |
769 | lld_timedout(unsigned long ptr) | |
770 | { | |
771 | uioc_t *kioc = (uioc_t *)ptr; | |
772 | ||
773 | kioc->status = -ETIME; | |
774 | kioc->timedout = 1; | |
775 | ||
776 | con_log(CL_ANN, (KERN_WARNING "megaraid cmm: ioctl timed out\n")); | |
777 | ||
778 | wake_up(&wait_q); | |
779 | } | |
780 | ||
781 | ||
782 | /** | |
a69b74d3 | 783 | * kioc_to_mimd - Converter from new back to old format |
1da177e4 LT |
784 | * @kioc : Kernel space IOCTL packet (successfully issued) |
785 | * @mimd : User space MIMD packet | |
786 | */ | |
787 | static int | |
788 | kioc_to_mimd(uioc_t *kioc, mimd_t __user *mimd) | |
789 | { | |
790 | mimd_t kmimd; | |
791 | uint8_t opcode; | |
792 | uint8_t subopcode; | |
793 | ||
794 | mbox64_t *mbox64; | |
795 | mraid_passthru_t __user *upthru32; | |
796 | mraid_passthru_t *kpthru32; | |
797 | mcontroller_t cinfo; | |
798 | mraid_hba_info_t *hinfo; | |
799 | ||
800 | ||
801 | if (copy_from_user(&kmimd, mimd, sizeof(mimd_t))) | |
802 | return (-EFAULT); | |
803 | ||
804 | opcode = kmimd.ui.fcs.opcode; | |
805 | subopcode = kmimd.ui.fcs.subopcode; | |
806 | ||
807 | if (opcode == 0x82) { | |
808 | switch (subopcode) { | |
809 | ||
810 | case MEGAIOC_QADAPINFO: | |
811 | ||
812 | hinfo = (mraid_hba_info_t *)(unsigned long) | |
813 | kioc->buf_vaddr; | |
814 | ||
815 | hinfo_to_cinfo(hinfo, &cinfo); | |
816 | ||
817 | if (copy_to_user(kmimd.data, &cinfo, sizeof(cinfo))) | |
818 | return (-EFAULT); | |
819 | ||
820 | return 0; | |
821 | ||
822 | default: | |
823 | return (-EINVAL); | |
824 | } | |
825 | ||
826 | return 0; | |
827 | } | |
828 | ||
829 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; | |
830 | ||
831 | if (kioc->user_pthru) { | |
832 | ||
833 | upthru32 = kioc->user_pthru; | |
834 | kpthru32 = kioc->pthru32; | |
835 | ||
836 | if (copy_to_user(&upthru32->scsistatus, | |
837 | &kpthru32->scsistatus, | |
838 | sizeof(uint8_t))) { | |
839 | return (-EFAULT); | |
840 | } | |
841 | } | |
842 | ||
843 | if (kioc->user_data) { | |
844 | if (copy_to_user(kioc->user_data, kioc->buf_vaddr, | |
845 | kioc->user_data_len)) { | |
846 | return (-EFAULT); | |
847 | } | |
848 | } | |
849 | ||
850 | if (copy_to_user(&mimd->mbox[17], | |
851 | &mbox64->mbox32.status, sizeof(uint8_t))) { | |
852 | return (-EFAULT); | |
853 | } | |
854 | ||
855 | return 0; | |
856 | } | |
857 | ||
858 | ||
859 | /** | |
860 | * hinfo_to_cinfo - Convert new format hba info into old format | |
1da177e4 LT |
861 | * @hinfo : New format, more comprehensive adapter info |
862 | * @cinfo : Old format adapter info to support mimd_t apps | |
863 | */ | |
864 | static void | |
865 | hinfo_to_cinfo(mraid_hba_info_t *hinfo, mcontroller_t *cinfo) | |
866 | { | |
867 | if (!hinfo || !cinfo) | |
868 | return; | |
869 | ||
870 | cinfo->base = hinfo->baseport; | |
871 | cinfo->irq = hinfo->irq; | |
872 | cinfo->numldrv = hinfo->num_ldrv; | |
873 | cinfo->pcibus = hinfo->pci_bus; | |
874 | cinfo->pcidev = hinfo->pci_slot; | |
875 | cinfo->pcifun = PCI_FUNC(hinfo->pci_dev_fn); | |
876 | cinfo->pciid = hinfo->pci_device_id; | |
877 | cinfo->pcivendor = hinfo->pci_vendor_id; | |
878 | cinfo->pcislot = hinfo->pci_slot; | |
879 | cinfo->uid = hinfo->unique_id; | |
880 | } | |
881 | ||
882 | ||
a69b74d3 RD |
883 | /** |
884 | * mraid_mm_register_adp - Registration routine for low level drivers | |
885 | * @lld_adp : Adapter objejct | |
1da177e4 LT |
886 | */ |
887 | int | |
888 | mraid_mm_register_adp(mraid_mmadp_t *lld_adp) | |
889 | { | |
890 | mraid_mmadp_t *adapter; | |
891 | mbox64_t *mbox_list; | |
892 | uioc_t *kioc; | |
893 | uint32_t rval; | |
894 | int i; | |
895 | ||
896 | ||
897 | if (lld_adp->drvr_type != DRVRTYPE_MBOX) | |
898 | return (-EINVAL); | |
899 | ||
dd00cc48 | 900 | adapter = kzalloc(sizeof(mraid_mmadp_t), GFP_KERNEL); |
1da177e4 | 901 | |
5236467a AB |
902 | if (!adapter) |
903 | return -ENOMEM; | |
1da177e4 | 904 | |
1da177e4 LT |
905 | |
906 | adapter->unique_id = lld_adp->unique_id; | |
907 | adapter->drvr_type = lld_adp->drvr_type; | |
908 | adapter->drvr_data = lld_adp->drvr_data; | |
909 | adapter->pdev = lld_adp->pdev; | |
910 | adapter->issue_uioc = lld_adp->issue_uioc; | |
911 | adapter->timeout = lld_adp->timeout; | |
912 | adapter->max_kioc = lld_adp->max_kioc; | |
913 | adapter->quiescent = 1; | |
914 | ||
915 | /* | |
916 | * Allocate single blocks of memory for all required kiocs, | |
917 | * mailboxes and passthru structures. | |
918 | */ | |
919 | adapter->kioc_list = kmalloc(sizeof(uioc_t) * lld_adp->max_kioc, | |
920 | GFP_KERNEL); | |
921 | adapter->mbox_list = kmalloc(sizeof(mbox64_t) * lld_adp->max_kioc, | |
922 | GFP_KERNEL); | |
923 | adapter->pthru_dma_pool = pci_pool_create("megaraid mm pthru pool", | |
924 | adapter->pdev, | |
925 | sizeof(mraid_passthru_t), | |
926 | 16, 0); | |
927 | ||
928 | if (!adapter->kioc_list || !adapter->mbox_list || | |
929 | !adapter->pthru_dma_pool) { | |
930 | ||
931 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 932 | "megaraid cmm: out of memory, %s %d\n", __func__, |
1da177e4 LT |
933 | __LINE__)); |
934 | ||
935 | rval = (-ENOMEM); | |
936 | ||
937 | goto memalloc_error; | |
938 | } | |
939 | ||
940 | /* | |
941 | * Slice kioc_list and make a kioc_pool with the individiual kiocs | |
942 | */ | |
943 | INIT_LIST_HEAD(&adapter->kioc_pool); | |
944 | spin_lock_init(&adapter->kioc_pool_lock); | |
945 | sema_init(&adapter->kioc_semaphore, lld_adp->max_kioc); | |
946 | ||
947 | mbox_list = (mbox64_t *)adapter->mbox_list; | |
948 | ||
949 | for (i = 0; i < lld_adp->max_kioc; i++) { | |
950 | ||
951 | kioc = adapter->kioc_list + i; | |
952 | kioc->cmdbuf = (uint64_t)(unsigned long)(mbox_list + i); | |
953 | kioc->pthru32 = pci_pool_alloc(adapter->pthru_dma_pool, | |
954 | GFP_KERNEL, &kioc->pthru32_h); | |
955 | ||
956 | if (!kioc->pthru32) { | |
957 | ||
958 | con_log(CL_ANN, (KERN_WARNING | |
959 | "megaraid cmm: out of memory, %s %d\n", | |
cadbd4a5 | 960 | __func__, __LINE__)); |
1da177e4 LT |
961 | |
962 | rval = (-ENOMEM); | |
963 | ||
964 | goto pthru_dma_pool_error; | |
965 | } | |
966 | ||
967 | list_add_tail(&kioc->list, &adapter->kioc_pool); | |
968 | } | |
969 | ||
970 | // Setup the dma pools for data buffers | |
971 | if ((rval = mraid_mm_setup_dma_pools(adapter)) != 0) { | |
972 | goto dma_pool_error; | |
973 | } | |
974 | ||
975 | list_add_tail(&adapter->list, &adapters_list_g); | |
976 | ||
977 | adapters_count_g++; | |
978 | ||
979 | return 0; | |
980 | ||
981 | dma_pool_error: | |
982 | /* Do nothing */ | |
983 | ||
984 | pthru_dma_pool_error: | |
985 | ||
986 | for (i = 0; i < lld_adp->max_kioc; i++) { | |
987 | kioc = adapter->kioc_list + i; | |
988 | if (kioc->pthru32) { | |
989 | pci_pool_free(adapter->pthru_dma_pool, kioc->pthru32, | |
990 | kioc->pthru32_h); | |
991 | } | |
992 | } | |
993 | ||
994 | memalloc_error: | |
995 | ||
c9475cb0 JJ |
996 | kfree(adapter->kioc_list); |
997 | kfree(adapter->mbox_list); | |
1da177e4 LT |
998 | |
999 | if (adapter->pthru_dma_pool) | |
1000 | pci_pool_destroy(adapter->pthru_dma_pool); | |
1001 | ||
c9475cb0 | 1002 | kfree(adapter); |
1da177e4 LT |
1003 | |
1004 | return rval; | |
1005 | } | |
1006 | ||
1007 | ||
1008 | /** | |
1009 | * mraid_mm_adapter_app_handle - return the application handle for this adapter | |
a69b74d3 | 1010 | * @unique_id : adapter unique identifier |
1da177e4 | 1011 | * |
a69b74d3 | 1012 | * For the given driver data, locate the adapter in our global list and |
1da177e4 LT |
1013 | * return the corresponding handle, which is also used by applications to |
1014 | * uniquely identify an adapter. | |
1015 | * | |
a69b74d3 RD |
1016 | * Return adapter handle if found in the list. |
1017 | * Return 0 if adapter could not be located, should never happen though. | |
1da177e4 LT |
1018 | */ |
1019 | uint32_t | |
1020 | mraid_mm_adapter_app_handle(uint32_t unique_id) | |
1021 | { | |
1022 | mraid_mmadp_t *adapter; | |
1023 | mraid_mmadp_t *tmp; | |
1024 | int index = 0; | |
1025 | ||
1026 | list_for_each_entry_safe(adapter, tmp, &adapters_list_g, list) { | |
1027 | ||
1028 | if (adapter->unique_id == unique_id) { | |
1029 | ||
1030 | return MKADAP(index); | |
1031 | } | |
1032 | ||
1033 | index++; | |
1034 | } | |
1035 | ||
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | ||
1040 | /** | |
1041 | * mraid_mm_setup_dma_pools - Set up dma buffer pools per adapter | |
1da177e4 LT |
1042 | * @adp : Adapter softstate |
1043 | * | |
1044 | * We maintain a pool of dma buffers per each adapter. Each pool has one | |
1045 | * buffer. E.g, we may have 5 dma pools - one each for 4k, 8k ... 64k buffers. | |
1046 | * We have just one 4k buffer in 4k pool, one 8k buffer in 8k pool etc. We | |
1047 | * dont' want to waste too much memory by allocating more buffers per each | |
1048 | * pool. | |
1049 | */ | |
1050 | static int | |
1051 | mraid_mm_setup_dma_pools(mraid_mmadp_t *adp) | |
1052 | { | |
1053 | mm_dmapool_t *pool; | |
1054 | int bufsize; | |
1055 | int i; | |
1056 | ||
1057 | /* | |
1058 | * Create MAX_DMA_POOLS number of pools | |
1059 | */ | |
1060 | bufsize = MRAID_MM_INIT_BUFF_SIZE; | |
1061 | ||
1062 | for (i = 0; i < MAX_DMA_POOLS; i++){ | |
1063 | ||
1064 | pool = &adp->dma_pool_list[i]; | |
1065 | ||
1066 | pool->buf_size = bufsize; | |
1067 | spin_lock_init(&pool->lock); | |
1068 | ||
1069 | pool->handle = pci_pool_create("megaraid mm data buffer", | |
1070 | adp->pdev, bufsize, 16, 0); | |
1071 | ||
1072 | if (!pool->handle) { | |
1073 | goto dma_pool_setup_error; | |
1074 | } | |
1075 | ||
1076 | pool->vaddr = pci_pool_alloc(pool->handle, GFP_KERNEL, | |
1077 | &pool->paddr); | |
1078 | ||
1079 | if (!pool->vaddr) | |
1080 | goto dma_pool_setup_error; | |
1081 | ||
1082 | bufsize = bufsize * 2; | |
1083 | } | |
1084 | ||
1085 | return 0; | |
1086 | ||
1087 | dma_pool_setup_error: | |
1088 | ||
1089 | mraid_mm_teardown_dma_pools(adp); | |
1090 | return (-ENOMEM); | |
1091 | } | |
1092 | ||
1093 | ||
a69b74d3 | 1094 | /** |
1da177e4 | 1095 | * mraid_mm_unregister_adp - Unregister routine for low level drivers |
1da177e4 | 1096 | * @unique_id : UID of the adpater |
a69b74d3 RD |
1097 | * |
1098 | * Assumes no outstanding ioctls to llds. | |
1da177e4 LT |
1099 | */ |
1100 | int | |
1101 | mraid_mm_unregister_adp(uint32_t unique_id) | |
1102 | { | |
1103 | mraid_mmadp_t *adapter; | |
1104 | mraid_mmadp_t *tmp; | |
1105 | ||
1106 | list_for_each_entry_safe(adapter, tmp, &adapters_list_g, list) { | |
1107 | ||
1108 | ||
1109 | if (adapter->unique_id == unique_id) { | |
1110 | ||
1111 | adapters_count_g--; | |
1112 | ||
1113 | list_del_init(&adapter->list); | |
1114 | ||
1115 | mraid_mm_free_adp_resources(adapter); | |
1116 | ||
1117 | kfree(adapter); | |
1118 | ||
1119 | con_log(CL_ANN, ( | |
1120 | "megaraid cmm: Unregistered one adapter:%#x\n", | |
1121 | unique_id)); | |
1122 | ||
1123 | return 0; | |
1124 | } | |
1125 | } | |
1126 | ||
1127 | return (-ENODEV); | |
1128 | } | |
1129 | ||
1130 | /** | |
1131 | * mraid_mm_free_adp_resources - Free adapter softstate | |
1da177e4 LT |
1132 | * @adp : Adapter softstate |
1133 | */ | |
1134 | static void | |
1135 | mraid_mm_free_adp_resources(mraid_mmadp_t *adp) | |
1136 | { | |
1137 | uioc_t *kioc; | |
1138 | int i; | |
1139 | ||
1140 | mraid_mm_teardown_dma_pools(adp); | |
1141 | ||
1142 | for (i = 0; i < adp->max_kioc; i++) { | |
1143 | ||
1144 | kioc = adp->kioc_list + i; | |
1145 | ||
1146 | pci_pool_free(adp->pthru_dma_pool, kioc->pthru32, | |
1147 | kioc->pthru32_h); | |
1148 | } | |
1149 | ||
1150 | kfree(adp->kioc_list); | |
1da177e4 LT |
1151 | kfree(adp->mbox_list); |
1152 | ||
1153 | pci_pool_destroy(adp->pthru_dma_pool); | |
1154 | ||
1155 | ||
1156 | return; | |
1157 | } | |
1158 | ||
1159 | ||
1160 | /** | |
1161 | * mraid_mm_teardown_dma_pools - Free all per adapter dma buffers | |
1da177e4 LT |
1162 | * @adp : Adapter softstate |
1163 | */ | |
1164 | static void | |
1165 | mraid_mm_teardown_dma_pools(mraid_mmadp_t *adp) | |
1166 | { | |
1167 | int i; | |
1168 | mm_dmapool_t *pool; | |
1169 | ||
1170 | for (i = 0; i < MAX_DMA_POOLS; i++) { | |
1171 | ||
1172 | pool = &adp->dma_pool_list[i]; | |
1173 | ||
1174 | if (pool->handle) { | |
1175 | ||
1176 | if (pool->vaddr) | |
1177 | pci_pool_free(pool->handle, pool->vaddr, | |
1178 | pool->paddr); | |
1179 | ||
1180 | pci_pool_destroy(pool->handle); | |
1181 | pool->handle = NULL; | |
1182 | } | |
1183 | } | |
1184 | ||
1185 | return; | |
1186 | } | |
1187 | ||
1188 | /** | |
a69b74d3 | 1189 | * mraid_mm_init - Module entry point |
1da177e4 LT |
1190 | */ |
1191 | static int __init | |
1192 | mraid_mm_init(void) | |
1193 | { | |
90a95af8 TH |
1194 | int err; |
1195 | ||
1da177e4 LT |
1196 | // Announce the driver version |
1197 | con_log(CL_ANN, (KERN_INFO "megaraid cmm: %s %s\n", | |
1198 | LSI_COMMON_MOD_VERSION, LSI_COMMON_MOD_EXT_VERSION)); | |
1199 | ||
90a95af8 TH |
1200 | err = misc_register(&megaraid_mm_dev); |
1201 | if (err < 0) { | |
1202 | con_log(CL_ANN, ("megaraid cmm: cannot register misc device\n")); | |
1203 | return err; | |
1da177e4 LT |
1204 | } |
1205 | ||
1206 | init_waitqueue_head(&wait_q); | |
1207 | ||
1208 | INIT_LIST_HEAD(&adapters_list_g); | |
1209 | ||
1210 | return 0; | |
1211 | } | |
1212 | ||
1213 | ||
a69b74d3 | 1214 | #ifdef CONFIG_COMPAT |
1da177e4 | 1215 | /** |
a69b74d3 RD |
1216 | * mraid_mm_compat_ioctl - 32bit to 64bit ioctl conversion routine |
1217 | * @filep : file operations pointer (ignored) | |
1218 | * @cmd : ioctl command | |
1219 | * @arg : user ioctl packet | |
1da177e4 | 1220 | */ |
1da177e4 LT |
1221 | static long |
1222 | mraid_mm_compat_ioctl(struct file *filep, unsigned int cmd, | |
1223 | unsigned long arg) | |
1224 | { | |
1225 | int err; | |
672b2d38 | 1226 | |
1da177e4 | 1227 | err = mraid_mm_ioctl(NULL, filep, cmd, arg); |
672b2d38 | 1228 | |
1da177e4 LT |
1229 | return err; |
1230 | } | |
1231 | #endif | |
1232 | ||
1233 | /** | |
a69b74d3 | 1234 | * mraid_mm_exit - Module exit point |
1da177e4 LT |
1235 | */ |
1236 | static void __exit | |
1237 | mraid_mm_exit(void) | |
1238 | { | |
1239 | con_log(CL_DLEVEL1 , ("exiting common mod\n")); | |
1240 | ||
90a95af8 | 1241 | misc_deregister(&megaraid_mm_dev); |
1da177e4 LT |
1242 | } |
1243 | ||
1244 | module_init(mraid_mm_init); | |
1245 | module_exit(mraid_mm_exit); | |
1246 | ||
1247 | /* vi: set ts=8 sw=8 tw=78: */ |