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1da177e4 LT |
1 | /* |
2 | * Adaptec AAC series RAID controller driver | |
3 | * (c) Copyright 2001 Red Hat Inc. <alan@redhat.com> | |
4 | * | |
5 | * based on the old aacraid driver that is.. | |
6 | * Adaptec aacraid device driver for Linux. | |
7 | * | |
8 | * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com) | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2, or (at your option) | |
13 | * any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; see the file COPYING. If not, write to | |
22 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | * | |
24 | * Module Name: | |
25 | * commctrl.c | |
26 | * | |
27 | * Abstract: Contains all routines for control of the AFA comm layer | |
28 | * | |
29 | */ | |
30 | ||
31 | #include <linux/kernel.h> | |
32 | #include <linux/init.h> | |
33 | #include <linux/types.h> | |
1da177e4 LT |
34 | #include <linux/pci.h> |
35 | #include <linux/spinlock.h> | |
36 | #include <linux/slab.h> | |
37 | #include <linux/completion.h> | |
38 | #include <linux/dma-mapping.h> | |
39 | #include <linux/blkdev.h> | |
c8f7b073 | 40 | #include <linux/delay.h> /* ssleep prototype */ |
dc4adbf4 | 41 | #include <linux/kthread.h> |
1da177e4 LT |
42 | #include <asm/semaphore.h> |
43 | #include <asm/uaccess.h> | |
44 | ||
45 | #include "aacraid.h" | |
46 | ||
47 | /** | |
48 | * ioctl_send_fib - send a FIB from userspace | |
49 | * @dev: adapter is being processed | |
50 | * @arg: arguments to the ioctl call | |
51 | * | |
52 | * This routine sends a fib to the adapter on behalf of a user level | |
53 | * program. | |
54 | */ | |
7c00ffa3 MH |
55 | # define AAC_DEBUG_PREAMBLE KERN_INFO |
56 | # define AAC_DEBUG_POSTAMBLE | |
1da177e4 LT |
57 | |
58 | static int ioctl_send_fib(struct aac_dev * dev, void __user *arg) | |
59 | { | |
60 | struct hw_fib * kfib; | |
61 | struct fib *fibptr; | |
7c00ffa3 MH |
62 | struct hw_fib * hw_fib = (struct hw_fib *)0; |
63 | dma_addr_t hw_fib_pa = (dma_addr_t)0LL; | |
64 | unsigned size; | |
65 | int retval; | |
1da177e4 | 66 | |
bfb35aa8 | 67 | fibptr = aac_fib_alloc(dev); |
7c00ffa3 | 68 | if(fibptr == NULL) { |
1da177e4 | 69 | return -ENOMEM; |
7c00ffa3 | 70 | } |
1da177e4 | 71 | |
a8166a52 | 72 | kfib = fibptr->hw_fib_va; |
1da177e4 LT |
73 | /* |
74 | * First copy in the header so that we can check the size field. | |
75 | */ | |
76 | if (copy_from_user((void *)kfib, arg, sizeof(struct aac_fibhdr))) { | |
bfb35aa8 | 77 | aac_fib_free(fibptr); |
1da177e4 LT |
78 | return -EFAULT; |
79 | } | |
80 | /* | |
81 | * Since we copy based on the fib header size, make sure that we | |
82 | * will not overrun the buffer when we copy the memory. Return | |
83 | * an error if we would. | |
84 | */ | |
7c00ffa3 MH |
85 | size = le16_to_cpu(kfib->header.Size) + sizeof(struct aac_fibhdr); |
86 | if (size < le16_to_cpu(kfib->header.SenderSize)) | |
87 | size = le16_to_cpu(kfib->header.SenderSize); | |
88 | if (size > dev->max_fib_size) { | |
6e289a90 MH |
89 | if (size > 2048) { |
90 | retval = -EINVAL; | |
91 | goto cleanup; | |
92 | } | |
7c00ffa3 | 93 | /* Highjack the hw_fib */ |
a8166a52 | 94 | hw_fib = fibptr->hw_fib_va; |
7c00ffa3 | 95 | hw_fib_pa = fibptr->hw_fib_pa; |
a8166a52 | 96 | fibptr->hw_fib_va = kfib = pci_alloc_consistent(dev->pdev, size, &fibptr->hw_fib_pa); |
7c00ffa3 MH |
97 | memset(((char *)kfib) + dev->max_fib_size, 0, size - dev->max_fib_size); |
98 | memcpy(kfib, hw_fib, dev->max_fib_size); | |
1da177e4 LT |
99 | } |
100 | ||
7c00ffa3 MH |
101 | if (copy_from_user(kfib, arg, size)) { |
102 | retval = -EFAULT; | |
103 | goto cleanup; | |
1da177e4 LT |
104 | } |
105 | ||
56b58712 | 106 | if (kfib->header.Command == cpu_to_le16(TakeABreakPt)) { |
1da177e4 LT |
107 | aac_adapter_interrupt(dev); |
108 | /* | |
109 | * Since we didn't really send a fib, zero out the state to allow | |
110 | * cleanup code not to assert. | |
111 | */ | |
112 | kfib->header.XferState = 0; | |
113 | } else { | |
bfb35aa8 | 114 | retval = aac_fib_send(le16_to_cpu(kfib->header.Command), fibptr, |
1da177e4 LT |
115 | le16_to_cpu(kfib->header.Size) , FsaNormal, |
116 | 1, 1, NULL, NULL); | |
117 | if (retval) { | |
7c00ffa3 | 118 | goto cleanup; |
1da177e4 | 119 | } |
bfb35aa8 | 120 | if (aac_fib_complete(fibptr) != 0) { |
7c00ffa3 MH |
121 | retval = -EINVAL; |
122 | goto cleanup; | |
1da177e4 LT |
123 | } |
124 | } | |
125 | /* | |
126 | * Make sure that the size returned by the adapter (which includes | |
127 | * the header) is less than or equal to the size of a fib, so we | |
128 | * don't corrupt application data. Then copy that size to the user | |
129 | * buffer. (Don't try to add the header information again, since it | |
130 | * was already included by the adapter.) | |
131 | */ | |
132 | ||
7c00ffa3 MH |
133 | retval = 0; |
134 | if (copy_to_user(arg, (void *)kfib, size)) | |
135 | retval = -EFAULT; | |
136 | cleanup: | |
137 | if (hw_fib) { | |
138 | pci_free_consistent(dev->pdev, size, kfib, fibptr->hw_fib_pa); | |
139 | fibptr->hw_fib_pa = hw_fib_pa; | |
a8166a52 | 140 | fibptr->hw_fib_va = hw_fib; |
1da177e4 | 141 | } |
c8f7b073 MH |
142 | if (retval != -EINTR) |
143 | aac_fib_free(fibptr); | |
7c00ffa3 | 144 | return retval; |
1da177e4 LT |
145 | } |
146 | ||
147 | /** | |
148 | * open_getadapter_fib - Get the next fib | |
149 | * | |
150 | * This routine will get the next Fib, if available, from the AdapterFibContext | |
151 | * passed in from the user. | |
152 | */ | |
153 | ||
154 | static int open_getadapter_fib(struct aac_dev * dev, void __user *arg) | |
155 | { | |
156 | struct aac_fib_context * fibctx; | |
157 | int status; | |
158 | ||
159 | fibctx = kmalloc(sizeof(struct aac_fib_context), GFP_KERNEL); | |
160 | if (fibctx == NULL) { | |
161 | status = -ENOMEM; | |
162 | } else { | |
163 | unsigned long flags; | |
164 | struct list_head * entry; | |
165 | struct aac_fib_context * context; | |
166 | ||
167 | fibctx->type = FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT; | |
168 | fibctx->size = sizeof(struct aac_fib_context); | |
169 | /* | |
170 | * Yes yes, I know this could be an index, but we have a | |
171 | * better guarantee of uniqueness for the locked loop below. | |
172 | * Without the aid of a persistent history, this also helps | |
173 | * reduce the chance that the opaque context would be reused. | |
174 | */ | |
175 | fibctx->unique = (u32)((ulong)fibctx & 0xFFFFFFFF); | |
176 | /* | |
177 | * Initialize the mutex used to wait for the next AIF. | |
178 | */ | |
179 | init_MUTEX_LOCKED(&fibctx->wait_sem); | |
180 | fibctx->wait = 0; | |
181 | /* | |
182 | * Initialize the fibs and set the count of fibs on | |
183 | * the list to 0. | |
184 | */ | |
185 | fibctx->count = 0; | |
186 | INIT_LIST_HEAD(&fibctx->fib_list); | |
187 | fibctx->jiffies = jiffies/HZ; | |
188 | /* | |
189 | * Now add this context onto the adapter's | |
190 | * AdapterFibContext list. | |
191 | */ | |
192 | spin_lock_irqsave(&dev->fib_lock, flags); | |
193 | /* Ensure that we have a unique identifier */ | |
194 | entry = dev->fib_list.next; | |
195 | while (entry != &dev->fib_list) { | |
196 | context = list_entry(entry, struct aac_fib_context, next); | |
197 | if (context->unique == fibctx->unique) { | |
198 | /* Not unique (32 bits) */ | |
199 | fibctx->unique++; | |
200 | entry = dev->fib_list.next; | |
201 | } else { | |
202 | entry = entry->next; | |
203 | } | |
204 | } | |
205 | list_add_tail(&fibctx->next, &dev->fib_list); | |
206 | spin_unlock_irqrestore(&dev->fib_lock, flags); | |
207 | if (copy_to_user(arg, &fibctx->unique, | |
208 | sizeof(fibctx->unique))) { | |
209 | status = -EFAULT; | |
210 | } else { | |
211 | status = 0; | |
212 | } | |
213 | } | |
214 | return status; | |
215 | } | |
216 | ||
217 | /** | |
218 | * next_getadapter_fib - get the next fib | |
219 | * @dev: adapter to use | |
220 | * @arg: ioctl argument | |
221 | * | |
222 | * This routine will get the next Fib, if available, from the AdapterFibContext | |
223 | * passed in from the user. | |
224 | */ | |
225 | ||
226 | static int next_getadapter_fib(struct aac_dev * dev, void __user *arg) | |
227 | { | |
228 | struct fib_ioctl f; | |
229 | struct fib *fib; | |
230 | struct aac_fib_context *fibctx; | |
231 | int status; | |
232 | struct list_head * entry; | |
233 | unsigned long flags; | |
234 | ||
235 | if(copy_from_user((void *)&f, arg, sizeof(struct fib_ioctl))) | |
236 | return -EFAULT; | |
237 | /* | |
238 | * Verify that the HANDLE passed in was a valid AdapterFibContext | |
239 | * | |
240 | * Search the list of AdapterFibContext addresses on the adapter | |
241 | * to be sure this is a valid address | |
242 | */ | |
243 | entry = dev->fib_list.next; | |
244 | fibctx = NULL; | |
245 | ||
246 | while (entry != &dev->fib_list) { | |
247 | fibctx = list_entry(entry, struct aac_fib_context, next); | |
248 | /* | |
249 | * Extract the AdapterFibContext from the Input parameters. | |
250 | */ | |
251 | if (fibctx->unique == f.fibctx) { /* We found a winner */ | |
252 | break; | |
253 | } | |
254 | entry = entry->next; | |
255 | fibctx = NULL; | |
256 | } | |
257 | if (!fibctx) { | |
258 | dprintk ((KERN_INFO "Fib Context not found\n")); | |
259 | return -EINVAL; | |
260 | } | |
261 | ||
262 | if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) || | |
263 | (fibctx->size != sizeof(struct aac_fib_context))) { | |
264 | dprintk ((KERN_INFO "Fib Context corrupt?\n")); | |
265 | return -EINVAL; | |
266 | } | |
267 | status = 0; | |
268 | spin_lock_irqsave(&dev->fib_lock, flags); | |
269 | /* | |
270 | * If there are no fibs to send back, then either wait or return | |
271 | * -EAGAIN | |
272 | */ | |
273 | return_fib: | |
274 | if (!list_empty(&fibctx->fib_list)) { | |
275 | struct list_head * entry; | |
276 | /* | |
277 | * Pull the next fib from the fibs | |
278 | */ | |
279 | entry = fibctx->fib_list.next; | |
280 | list_del(entry); | |
281 | ||
282 | fib = list_entry(entry, struct fib, fiblink); | |
283 | fibctx->count--; | |
284 | spin_unlock_irqrestore(&dev->fib_lock, flags); | |
a8166a52 MH |
285 | if (copy_to_user(f.fib, fib->hw_fib_va, sizeof(struct hw_fib))) { |
286 | kfree(fib->hw_fib_va); | |
1da177e4 LT |
287 | kfree(fib); |
288 | return -EFAULT; | |
289 | } | |
290 | /* | |
291 | * Free the space occupied by this copy of the fib. | |
292 | */ | |
a8166a52 | 293 | kfree(fib->hw_fib_va); |
1da177e4 LT |
294 | kfree(fib); |
295 | status = 0; | |
1da177e4 LT |
296 | } else { |
297 | spin_unlock_irqrestore(&dev->fib_lock, flags); | |
dc4adbf4 MH |
298 | /* If someone killed the AIF aacraid thread, restart it */ |
299 | status = !dev->aif_thread; | |
8c867b25 | 300 | if (status && !dev->in_reset && dev->queues && dev->fsa_dev) { |
dc4adbf4 MH |
301 | /* Be paranoid, be very paranoid! */ |
302 | kthread_stop(dev->thread); | |
303 | ssleep(1); | |
304 | dev->aif_thread = 0; | |
305 | dev->thread = kthread_run(aac_command_thread, dev, dev->name); | |
306 | ssleep(1); | |
307 | } | |
1da177e4 LT |
308 | if (f.wait) { |
309 | if(down_interruptible(&fibctx->wait_sem) < 0) { | |
310 | status = -EINTR; | |
311 | } else { | |
312 | /* Lock again and retry */ | |
313 | spin_lock_irqsave(&dev->fib_lock, flags); | |
314 | goto return_fib; | |
315 | } | |
316 | } else { | |
317 | status = -EAGAIN; | |
318 | } | |
319 | } | |
12a26d08 | 320 | fibctx->jiffies = jiffies/HZ; |
1da177e4 LT |
321 | return status; |
322 | } | |
323 | ||
324 | int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx) | |
325 | { | |
326 | struct fib *fib; | |
327 | ||
328 | /* | |
329 | * First free any FIBs that have not been consumed. | |
330 | */ | |
331 | while (!list_empty(&fibctx->fib_list)) { | |
332 | struct list_head * entry; | |
333 | /* | |
334 | * Pull the next fib from the fibs | |
335 | */ | |
336 | entry = fibctx->fib_list.next; | |
337 | list_del(entry); | |
338 | fib = list_entry(entry, struct fib, fiblink); | |
339 | fibctx->count--; | |
340 | /* | |
341 | * Free the space occupied by this copy of the fib. | |
342 | */ | |
a8166a52 | 343 | kfree(fib->hw_fib_va); |
1da177e4 LT |
344 | kfree(fib); |
345 | } | |
346 | /* | |
347 | * Remove the Context from the AdapterFibContext List | |
348 | */ | |
349 | list_del(&fibctx->next); | |
350 | /* | |
351 | * Invalidate context | |
352 | */ | |
353 | fibctx->type = 0; | |
354 | /* | |
355 | * Free the space occupied by the Context | |
356 | */ | |
357 | kfree(fibctx); | |
358 | return 0; | |
359 | } | |
360 | ||
361 | /** | |
362 | * close_getadapter_fib - close down user fib context | |
363 | * @dev: adapter | |
364 | * @arg: ioctl arguments | |
365 | * | |
366 | * This routine will close down the fibctx passed in from the user. | |
367 | */ | |
368 | ||
369 | static int close_getadapter_fib(struct aac_dev * dev, void __user *arg) | |
370 | { | |
371 | struct aac_fib_context *fibctx; | |
372 | int status; | |
373 | unsigned long flags; | |
374 | struct list_head * entry; | |
375 | ||
376 | /* | |
377 | * Verify that the HANDLE passed in was a valid AdapterFibContext | |
378 | * | |
379 | * Search the list of AdapterFibContext addresses on the adapter | |
380 | * to be sure this is a valid address | |
381 | */ | |
382 | ||
383 | entry = dev->fib_list.next; | |
384 | fibctx = NULL; | |
385 | ||
386 | while(entry != &dev->fib_list) { | |
387 | fibctx = list_entry(entry, struct aac_fib_context, next); | |
388 | /* | |
389 | * Extract the fibctx from the input parameters | |
390 | */ | |
391 | if (fibctx->unique == (u32)(unsigned long)arg) { | |
392 | /* We found a winner */ | |
393 | break; | |
394 | } | |
395 | entry = entry->next; | |
396 | fibctx = NULL; | |
397 | } | |
398 | ||
399 | if (!fibctx) | |
400 | return 0; /* Already gone */ | |
401 | ||
402 | if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) || | |
403 | (fibctx->size != sizeof(struct aac_fib_context))) | |
404 | return -EINVAL; | |
405 | spin_lock_irqsave(&dev->fib_lock, flags); | |
406 | status = aac_close_fib_context(dev, fibctx); | |
407 | spin_unlock_irqrestore(&dev->fib_lock, flags); | |
408 | return status; | |
409 | } | |
410 | ||
411 | /** | |
412 | * check_revision - close down user fib context | |
413 | * @dev: adapter | |
414 | * @arg: ioctl arguments | |
415 | * | |
416 | * This routine returns the driver version. | |
417 | * Under Linux, there have been no version incompatibilities, so this is | |
418 | * simple! | |
419 | */ | |
420 | ||
421 | static int check_revision(struct aac_dev *dev, void __user *arg) | |
422 | { | |
423 | struct revision response; | |
c7f47602 MH |
424 | char *driver_version = aac_driver_version; |
425 | u32 version; | |
426 | ||
9f30a323 | 427 | response.compat = 1; |
c7f47602 MH |
428 | version = (simple_strtol(driver_version, |
429 | &driver_version, 10) << 24) | 0x00000400; | |
430 | version += simple_strtol(driver_version + 1, &driver_version, 10) << 16; | |
431 | version += simple_strtol(driver_version + 1, NULL, 10); | |
432 | response.version = cpu_to_le32(version); | |
433 | # if (defined(AAC_DRIVER_BUILD)) | |
434 | response.build = cpu_to_le32(AAC_DRIVER_BUILD); | |
435 | # else | |
436 | response.build = cpu_to_le32(9999); | |
437 | # endif | |
1da177e4 LT |
438 | |
439 | if (copy_to_user(arg, &response, sizeof(response))) | |
440 | return -EFAULT; | |
441 | return 0; | |
442 | } | |
443 | ||
7c00ffa3 | 444 | |
1da177e4 LT |
445 | /** |
446 | * | |
447 | * aac_send_raw_scb | |
448 | * | |
449 | */ | |
450 | ||
4833869e | 451 | static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg) |
1da177e4 LT |
452 | { |
453 | struct fib* srbfib; | |
454 | int status; | |
56b58712 MH |
455 | struct aac_srb *srbcmd = NULL; |
456 | struct user_aac_srb *user_srbcmd = NULL; | |
457 | struct user_aac_srb __user *user_srb = arg; | |
1da177e4 LT |
458 | struct aac_srb_reply __user *user_reply; |
459 | struct aac_srb_reply* reply; | |
460 | u32 fibsize = 0; | |
461 | u32 flags = 0; | |
462 | s32 rcode = 0; | |
463 | u32 data_dir; | |
464 | void __user *sg_user[32]; | |
465 | void *sg_list[32]; | |
466 | u32 sg_indx = 0; | |
467 | u32 byte_count = 0; | |
468 | u32 actual_fibsize = 0; | |
469 | int i; | |
470 | ||
471 | ||
472 | if (!capable(CAP_SYS_ADMIN)){ | |
7c00ffa3 | 473 | dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n")); |
1da177e4 LT |
474 | return -EPERM; |
475 | } | |
476 | /* | |
477 | * Allocate and initialize a Fib then setup a BlockWrite command | |
478 | */ | |
bfb35aa8 | 479 | if (!(srbfib = aac_fib_alloc(dev))) { |
5d497cec | 480 | return -ENOMEM; |
1da177e4 | 481 | } |
bfb35aa8 | 482 | aac_fib_init(srbfib); |
1da177e4 LT |
483 | |
484 | srbcmd = (struct aac_srb*) fib_data(srbfib); | |
485 | ||
7c00ffa3 | 486 | memset(sg_list, 0, sizeof(sg_list)); /* cleanup may take issue */ |
1da177e4 | 487 | if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){ |
7c00ffa3 | 488 | dprintk((KERN_DEBUG"aacraid: Could not copy data size from user\n")); |
1da177e4 LT |
489 | rcode = -EFAULT; |
490 | goto cleanup; | |
491 | } | |
492 | ||
7c00ffa3 | 493 | if (fibsize > (dev->max_fib_size - sizeof(struct aac_fibhdr))) { |
1da177e4 LT |
494 | rcode = -EINVAL; |
495 | goto cleanup; | |
496 | } | |
497 | ||
4645df10 | 498 | user_srbcmd = kmalloc(fibsize, GFP_KERNEL); |
7c00ffa3 MH |
499 | if (!user_srbcmd) { |
500 | dprintk((KERN_DEBUG"aacraid: Could not make a copy of the srb\n")); | |
501 | rcode = -ENOMEM; | |
502 | goto cleanup; | |
503 | } | |
56b58712 | 504 | if(copy_from_user(user_srbcmd, user_srb,fibsize)){ |
7c00ffa3 | 505 | dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n")); |
1da177e4 LT |
506 | rcode = -EFAULT; |
507 | goto cleanup; | |
508 | } | |
509 | ||
510 | user_reply = arg+fibsize; | |
511 | ||
56b58712 | 512 | flags = user_srbcmd->flags; /* from user in cpu order */ |
1da177e4 | 513 | // Fix up srb for endian and force some values |
56b58712 | 514 | |
1da177e4 | 515 | srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi); // Force this |
7c00ffa3 MH |
516 | srbcmd->channel = cpu_to_le32(user_srbcmd->channel); |
517 | srbcmd->id = cpu_to_le32(user_srbcmd->id); | |
518 | srbcmd->lun = cpu_to_le32(user_srbcmd->lun); | |
7c00ffa3 | 519 | srbcmd->timeout = cpu_to_le32(user_srbcmd->timeout); |
5d497cec MH |
520 | srbcmd->flags = cpu_to_le32(flags); |
521 | srbcmd->retry_limit = 0; // Obsolete parameter | |
56b58712 | 522 | srbcmd->cdb_size = cpu_to_le32(user_srbcmd->cdb_size); |
5d497cec | 523 | memcpy(srbcmd->cdb, user_srbcmd->cdb, sizeof(srbcmd->cdb)); |
1da177e4 | 524 | |
56b58712 | 525 | switch (flags & (SRB_DataIn | SRB_DataOut)) { |
1da177e4 LT |
526 | case SRB_DataOut: |
527 | data_dir = DMA_TO_DEVICE; | |
528 | break; | |
529 | case (SRB_DataIn | SRB_DataOut): | |
530 | data_dir = DMA_BIDIRECTIONAL; | |
531 | break; | |
532 | case SRB_DataIn: | |
533 | data_dir = DMA_FROM_DEVICE; | |
534 | break; | |
535 | default: | |
536 | data_dir = DMA_NONE; | |
537 | } | |
6391a113 | 538 | if (user_srbcmd->sg.count > ARRAY_SIZE(sg_list)) { |
7c00ffa3 MH |
539 | dprintk((KERN_DEBUG"aacraid: too many sg entries %d\n", |
540 | le32_to_cpu(srbcmd->sg.count))); | |
541 | rcode = -EINVAL; | |
542 | goto cleanup; | |
543 | } | |
1da177e4 | 544 | if (dev->dac_support == 1) { |
56b58712 | 545 | struct user_sgmap64* upsg = (struct user_sgmap64*)&user_srbcmd->sg; |
84e29308 | 546 | struct sgmap64* psg = (struct sgmap64*)&srbcmd->sg; |
7c00ffa3 | 547 | struct user_sgmap* usg; |
1da177e4 LT |
548 | byte_count = 0; |
549 | ||
550 | /* | |
551 | * This should also catch if user used the 32 bit sgmap | |
552 | */ | |
553 | actual_fibsize = sizeof(struct aac_srb) - | |
7c00ffa3 MH |
554 | sizeof(struct sgentry) + |
555 | ((upsg->count & 0xff) * | |
556 | sizeof(struct sgentry)); | |
1da177e4 | 557 | if(actual_fibsize != fibsize){ // User made a mistake - should not continue |
7c00ffa3 | 558 | dprintk((KERN_DEBUG"aacraid: Bad Size specified in Raw SRB command\n")); |
1da177e4 LT |
559 | rcode = -EINVAL; |
560 | goto cleanup; | |
561 | } | |
7c00ffa3 MH |
562 | usg = kmalloc(actual_fibsize - sizeof(struct aac_srb) |
563 | + sizeof(struct sgmap), GFP_KERNEL); | |
564 | if (!usg) { | |
565 | dprintk((KERN_DEBUG"aacraid: Allocation error in Raw SRB command\n")); | |
566 | rcode = -ENOMEM; | |
567 | goto cleanup; | |
568 | } | |
569 | memcpy (usg, upsg, actual_fibsize - sizeof(struct aac_srb) | |
570 | + sizeof(struct sgmap)); | |
571 | actual_fibsize = sizeof(struct aac_srb) - | |
572 | sizeof(struct sgentry) + ((usg->count & 0xff) * | |
573 | sizeof(struct sgentry64)); | |
574 | if ((data_dir == DMA_NONE) && upsg->count) { | |
575 | kfree (usg); | |
576 | dprintk((KERN_DEBUG"aacraid: SG with no direction specified in Raw SRB command\n")); | |
1da177e4 LT |
577 | rcode = -EINVAL; |
578 | goto cleanup; | |
579 | } | |
580 | ||
7c00ffa3 MH |
581 | for (i = 0; i < usg->count; i++) { |
582 | u64 addr; | |
1da177e4 | 583 | void* p; |
7c00ffa3 MH |
584 | /* Does this really need to be GFP_DMA? */ |
585 | p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA); | |
1da177e4 | 586 | if(p == 0) { |
7c00ffa3 MH |
587 | kfree (usg); |
588 | dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n", | |
589 | usg->sg[i].count,i,usg->count)); | |
1da177e4 LT |
590 | rcode = -ENOMEM; |
591 | goto cleanup; | |
592 | } | |
e75d5176 | 593 | sg_user[i] = (void __user *)(long)usg->sg[i].addr; |
1da177e4 LT |
594 | sg_list[i] = p; // save so we can clean up later |
595 | sg_indx = i; | |
596 | ||
597 | if( flags & SRB_DataOut ){ | |
56b58712 | 598 | if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){ |
7c00ffa3 MH |
599 | kfree (usg); |
600 | dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n")); | |
1da177e4 LT |
601 | rcode = -EFAULT; |
602 | goto cleanup; | |
603 | } | |
604 | } | |
7c00ffa3 | 605 | addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir); |
1da177e4 | 606 | |
56b58712 | 607 | psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff); |
7c00ffa3 MH |
608 | psg->sg[i].addr[1] = cpu_to_le32(addr>>32); |
609 | psg->sg[i].count = cpu_to_le32(usg->sg[i].count); | |
610 | byte_count += usg->sg[i].count; | |
1da177e4 | 611 | } |
7c00ffa3 | 612 | kfree (usg); |
1da177e4 LT |
613 | |
614 | srbcmd->count = cpu_to_le32(byte_count); | |
7c00ffa3 | 615 | psg->count = cpu_to_le32(sg_indx+1); |
bfb35aa8 | 616 | status = aac_fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,NULL,NULL); |
1da177e4 | 617 | } else { |
56b58712 | 618 | struct user_sgmap* upsg = &user_srbcmd->sg; |
1da177e4 LT |
619 | struct sgmap* psg = &srbcmd->sg; |
620 | byte_count = 0; | |
621 | ||
5d497cec | 622 | actual_fibsize = sizeof (struct aac_srb) + (((user_srbcmd->sg.count & 0xff) - 1) * sizeof (struct sgentry)); |
1da177e4 | 623 | if(actual_fibsize != fibsize){ // User made a mistake - should not continue |
c8f7b073 MH |
624 | dprintk((KERN_DEBUG"aacraid: Bad Size specified in " |
625 | "Raw SRB command calculated fibsize=%d " | |
626 | "user_srbcmd->sg.count=%d aac_srb=%d sgentry=%d " | |
627 | "issued fibsize=%d\n", | |
628 | actual_fibsize, user_srbcmd->sg.count, | |
629 | sizeof(struct aac_srb), sizeof(struct sgentry), | |
630 | fibsize)); | |
1da177e4 LT |
631 | rcode = -EINVAL; |
632 | goto cleanup; | |
633 | } | |
56b58712 | 634 | if ((data_dir == DMA_NONE) && upsg->count) { |
7c00ffa3 | 635 | dprintk((KERN_DEBUG"aacraid: SG with no direction specified in Raw SRB command\n")); |
1da177e4 LT |
636 | rcode = -EINVAL; |
637 | goto cleanup; | |
638 | } | |
56b58712 | 639 | for (i = 0; i < upsg->count; i++) { |
1da177e4 LT |
640 | dma_addr_t addr; |
641 | void* p; | |
56b58712 | 642 | p = kmalloc(upsg->sg[i].count, GFP_KERNEL); |
1da177e4 | 643 | if(p == 0) { |
7c00ffa3 MH |
644 | dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n", |
645 | upsg->sg[i].count, i, upsg->count)); | |
1da177e4 LT |
646 | rcode = -ENOMEM; |
647 | goto cleanup; | |
648 | } | |
e75d5176 | 649 | sg_user[i] = (void __user *)(long)upsg->sg[i].addr; |
1da177e4 LT |
650 | sg_list[i] = p; // save so we can clean up later |
651 | sg_indx = i; | |
652 | ||
653 | if( flags & SRB_DataOut ){ | |
7c00ffa3 MH |
654 | if(copy_from_user(p, sg_user[i], |
655 | upsg->sg[i].count)) { | |
656 | dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n")); | |
1da177e4 LT |
657 | rcode = -EFAULT; |
658 | goto cleanup; | |
659 | } | |
660 | } | |
7c00ffa3 MH |
661 | addr = pci_map_single(dev->pdev, p, |
662 | upsg->sg[i].count, data_dir); | |
1da177e4 LT |
663 | |
664 | psg->sg[i].addr = cpu_to_le32(addr); | |
56b58712 MH |
665 | psg->sg[i].count = cpu_to_le32(upsg->sg[i].count); |
666 | byte_count += upsg->sg[i].count; | |
1da177e4 LT |
667 | } |
668 | srbcmd->count = cpu_to_le32(byte_count); | |
7c00ffa3 | 669 | psg->count = cpu_to_le32(sg_indx+1); |
bfb35aa8 | 670 | status = aac_fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, NULL, NULL); |
1da177e4 | 671 | } |
c8f7b073 MH |
672 | if (status == -EINTR) { |
673 | rcode = -EINTR; | |
674 | goto cleanup; | |
675 | } | |
1da177e4 LT |
676 | |
677 | if (status != 0){ | |
7c00ffa3 | 678 | dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n")); |
5d497cec | 679 | rcode = -ENXIO; |
1da177e4 LT |
680 | goto cleanup; |
681 | } | |
682 | ||
683 | if( flags & SRB_DataIn ) { | |
684 | for(i = 0 ; i <= sg_indx; i++){ | |
7c00ffa3 MH |
685 | byte_count = le32_to_cpu((dev->dac_support == 1) |
686 | ? ((struct sgmap64*)&srbcmd->sg)->sg[i].count | |
687 | : srbcmd->sg.sg[i].count); | |
688 | if(copy_to_user(sg_user[i], sg_list[i], byte_count)){ | |
689 | dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n")); | |
1da177e4 LT |
690 | rcode = -EFAULT; |
691 | goto cleanup; | |
692 | ||
693 | } | |
694 | } | |
695 | } | |
696 | ||
697 | reply = (struct aac_srb_reply *) fib_data(srbfib); | |
698 | if(copy_to_user(user_reply,reply,sizeof(struct aac_srb_reply))){ | |
7c00ffa3 | 699 | dprintk((KERN_DEBUG"aacraid: Could not copy reply to user\n")); |
1da177e4 LT |
700 | rcode = -EFAULT; |
701 | goto cleanup; | |
702 | } | |
703 | ||
704 | cleanup: | |
56b58712 | 705 | kfree(user_srbcmd); |
1da177e4 LT |
706 | for(i=0; i <= sg_indx; i++){ |
707 | kfree(sg_list[i]); | |
708 | } | |
c8f7b073 MH |
709 | if (rcode != -EINTR) { |
710 | aac_fib_complete(srbfib); | |
711 | aac_fib_free(srbfib); | |
712 | } | |
1da177e4 LT |
713 | |
714 | return rcode; | |
715 | } | |
716 | ||
1da177e4 LT |
717 | struct aac_pci_info { |
718 | u32 bus; | |
719 | u32 slot; | |
720 | }; | |
721 | ||
722 | ||
4833869e | 723 | static int aac_get_pci_info(struct aac_dev* dev, void __user *arg) |
1da177e4 LT |
724 | { |
725 | struct aac_pci_info pci_info; | |
726 | ||
727 | pci_info.bus = dev->pdev->bus->number; | |
728 | pci_info.slot = PCI_SLOT(dev->pdev->devfn); | |
729 | ||
730 | if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) { | |
7c00ffa3 | 731 | dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n")); |
1da177e4 LT |
732 | return -EFAULT; |
733 | } | |
734 | return 0; | |
7c00ffa3 | 735 | } |
1da177e4 LT |
736 | |
737 | ||
738 | int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg) | |
739 | { | |
740 | int status; | |
741 | ||
742 | /* | |
743 | * HBA gets first crack | |
744 | */ | |
745 | ||
746 | status = aac_dev_ioctl(dev, cmd, arg); | |
747 | if(status != -ENOTTY) | |
748 | return status; | |
749 | ||
750 | switch (cmd) { | |
751 | case FSACTL_MINIPORT_REV_CHECK: | |
752 | status = check_revision(dev, arg); | |
753 | break; | |
7c00ffa3 | 754 | case FSACTL_SEND_LARGE_FIB: |
1da177e4 LT |
755 | case FSACTL_SENDFIB: |
756 | status = ioctl_send_fib(dev, arg); | |
757 | break; | |
758 | case FSACTL_OPEN_GET_ADAPTER_FIB: | |
759 | status = open_getadapter_fib(dev, arg); | |
760 | break; | |
761 | case FSACTL_GET_NEXT_ADAPTER_FIB: | |
762 | status = next_getadapter_fib(dev, arg); | |
763 | break; | |
764 | case FSACTL_CLOSE_GET_ADAPTER_FIB: | |
765 | status = close_getadapter_fib(dev, arg); | |
766 | break; | |
767 | case FSACTL_SEND_RAW_SRB: | |
768 | status = aac_send_raw_srb(dev,arg); | |
769 | break; | |
770 | case FSACTL_GET_PCI_INFO: | |
771 | status = aac_get_pci_info(dev,arg); | |
772 | break; | |
773 | default: | |
774 | status = -ENOTTY; | |
775 | break; | |
776 | } | |
777 | return status; | |
778 | } | |
779 |