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[mirror_ubuntu-jammy-kernel.git] / drivers / scsi / aacraid / commctrl.c
1 /*
2 * Adaptec AAC series RAID controller driver
3 * (c) Copyright 2001 Red Hat Inc.
4 *
5 * based on the old aacraid driver that is..
6 * Adaptec aacraid device driver for Linux.
7 *
8 * Copyright (c) 2000-2010 Adaptec, Inc.
9 * 2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
14 * any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; see the file COPYING. If not, write to
23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 * Module Name:
26 * commctrl.c
27 *
28 * Abstract: Contains all routines for control of the AFA comm layer
29 *
30 */
31
32 #include <linux/kernel.h>
33 #include <linux/init.h>
34 #include <linux/types.h>
35 #include <linux/pci.h>
36 #include <linux/spinlock.h>
37 #include <linux/slab.h>
38 #include <linux/completion.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/blkdev.h>
41 #include <linux/delay.h> /* ssleep prototype */
42 #include <linux/kthread.h>
43 #include <linux/semaphore.h>
44 #include <linux/uaccess.h>
45 #include <scsi/scsi_host.h>
46
47 #include "aacraid.h"
48
49 /**
50 * ioctl_send_fib - send a FIB from userspace
51 * @dev: adapter is being processed
52 * @arg: arguments to the ioctl call
53 *
54 * This routine sends a fib to the adapter on behalf of a user level
55 * program.
56 */
57 # define AAC_DEBUG_PREAMBLE KERN_INFO
58 # define AAC_DEBUG_POSTAMBLE
59
60 static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
61 {
62 struct hw_fib * kfib;
63 struct fib *fibptr;
64 struct hw_fib * hw_fib = (struct hw_fib *)0;
65 dma_addr_t hw_fib_pa = (dma_addr_t)0LL;
66 unsigned int size, osize;
67 int retval;
68
69 if (dev->in_reset) {
70 return -EBUSY;
71 }
72 fibptr = aac_fib_alloc(dev);
73 if(fibptr == NULL) {
74 return -ENOMEM;
75 }
76
77 kfib = fibptr->hw_fib_va;
78 /*
79 * First copy in the header so that we can check the size field.
80 */
81 if (copy_from_user((void *)kfib, arg, sizeof(struct aac_fibhdr))) {
82 aac_fib_free(fibptr);
83 return -EFAULT;
84 }
85 /*
86 * Since we copy based on the fib header size, make sure that we
87 * will not overrun the buffer when we copy the memory. Return
88 * an error if we would.
89 */
90 osize = size = le16_to_cpu(kfib->header.Size) +
91 sizeof(struct aac_fibhdr);
92 if (size < le16_to_cpu(kfib->header.SenderSize))
93 size = le16_to_cpu(kfib->header.SenderSize);
94 if (size > dev->max_fib_size) {
95 dma_addr_t daddr;
96
97 if (size > 2048) {
98 retval = -EINVAL;
99 goto cleanup;
100 }
101
102 kfib = pci_alloc_consistent(dev->pdev, size, &daddr);
103 if (!kfib) {
104 retval = -ENOMEM;
105 goto cleanup;
106 }
107
108 /* Highjack the hw_fib */
109 hw_fib = fibptr->hw_fib_va;
110 hw_fib_pa = fibptr->hw_fib_pa;
111 fibptr->hw_fib_va = kfib;
112 fibptr->hw_fib_pa = daddr;
113 memset(((char *)kfib) + dev->max_fib_size, 0, size - dev->max_fib_size);
114 memcpy(kfib, hw_fib, dev->max_fib_size);
115 }
116
117 if (copy_from_user(kfib, arg, size)) {
118 retval = -EFAULT;
119 goto cleanup;
120 }
121
122 /* Sanity check the second copy */
123 if ((osize != le16_to_cpu(kfib->header.Size) +
124 sizeof(struct aac_fibhdr))
125 || (size < le16_to_cpu(kfib->header.SenderSize))) {
126 retval = -EINVAL;
127 goto cleanup;
128 }
129
130 if (kfib->header.Command == cpu_to_le16(TakeABreakPt)) {
131 aac_adapter_interrupt(dev);
132 /*
133 * Since we didn't really send a fib, zero out the state to allow
134 * cleanup code not to assert.
135 */
136 kfib->header.XferState = 0;
137 } else {
138 retval = aac_fib_send(le16_to_cpu(kfib->header.Command), fibptr,
139 le16_to_cpu(kfib->header.Size) , FsaNormal,
140 1, 1, NULL, NULL);
141 if (retval) {
142 goto cleanup;
143 }
144 if (aac_fib_complete(fibptr) != 0) {
145 retval = -EINVAL;
146 goto cleanup;
147 }
148 }
149 /*
150 * Make sure that the size returned by the adapter (which includes
151 * the header) is less than or equal to the size of a fib, so we
152 * don't corrupt application data. Then copy that size to the user
153 * buffer. (Don't try to add the header information again, since it
154 * was already included by the adapter.)
155 */
156
157 retval = 0;
158 if (copy_to_user(arg, (void *)kfib, size))
159 retval = -EFAULT;
160 cleanup:
161 if (hw_fib) {
162 pci_free_consistent(dev->pdev, size, kfib, fibptr->hw_fib_pa);
163 fibptr->hw_fib_pa = hw_fib_pa;
164 fibptr->hw_fib_va = hw_fib;
165 }
166 if (retval != -ERESTARTSYS)
167 aac_fib_free(fibptr);
168 return retval;
169 }
170
171 /**
172 * open_getadapter_fib - Get the next fib
173 *
174 * This routine will get the next Fib, if available, from the AdapterFibContext
175 * passed in from the user.
176 */
177
178 static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
179 {
180 struct aac_fib_context * fibctx;
181 int status;
182
183 fibctx = kmalloc(sizeof(struct aac_fib_context), GFP_KERNEL);
184 if (fibctx == NULL) {
185 status = -ENOMEM;
186 } else {
187 unsigned long flags;
188 struct list_head * entry;
189 struct aac_fib_context * context;
190
191 fibctx->type = FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT;
192 fibctx->size = sizeof(struct aac_fib_context);
193 /*
194 * Yes yes, I know this could be an index, but we have a
195 * better guarantee of uniqueness for the locked loop below.
196 * Without the aid of a persistent history, this also helps
197 * reduce the chance that the opaque context would be reused.
198 */
199 fibctx->unique = (u32)((ulong)fibctx & 0xFFFFFFFF);
200 /*
201 * Initialize the mutex used to wait for the next AIF.
202 */
203 sema_init(&fibctx->wait_sem, 0);
204 fibctx->wait = 0;
205 /*
206 * Initialize the fibs and set the count of fibs on
207 * the list to 0.
208 */
209 fibctx->count = 0;
210 INIT_LIST_HEAD(&fibctx->fib_list);
211 fibctx->jiffies = jiffies/HZ;
212 /*
213 * Now add this context onto the adapter's
214 * AdapterFibContext list.
215 */
216 spin_lock_irqsave(&dev->fib_lock, flags);
217 /* Ensure that we have a unique identifier */
218 entry = dev->fib_list.next;
219 while (entry != &dev->fib_list) {
220 context = list_entry(entry, struct aac_fib_context, next);
221 if (context->unique == fibctx->unique) {
222 /* Not unique (32 bits) */
223 fibctx->unique++;
224 entry = dev->fib_list.next;
225 } else {
226 entry = entry->next;
227 }
228 }
229 list_add_tail(&fibctx->next, &dev->fib_list);
230 spin_unlock_irqrestore(&dev->fib_lock, flags);
231 if (copy_to_user(arg, &fibctx->unique,
232 sizeof(fibctx->unique))) {
233 status = -EFAULT;
234 } else {
235 status = 0;
236 }
237 }
238 return status;
239 }
240
241 /**
242 * next_getadapter_fib - get the next fib
243 * @dev: adapter to use
244 * @arg: ioctl argument
245 *
246 * This routine will get the next Fib, if available, from the AdapterFibContext
247 * passed in from the user.
248 */
249
250 static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
251 {
252 struct fib_ioctl f;
253 struct fib *fib;
254 struct aac_fib_context *fibctx;
255 int status;
256 struct list_head * entry;
257 unsigned long flags;
258
259 if(copy_from_user((void *)&f, arg, sizeof(struct fib_ioctl)))
260 return -EFAULT;
261 /*
262 * Verify that the HANDLE passed in was a valid AdapterFibContext
263 *
264 * Search the list of AdapterFibContext addresses on the adapter
265 * to be sure this is a valid address
266 */
267 spin_lock_irqsave(&dev->fib_lock, flags);
268 entry = dev->fib_list.next;
269 fibctx = NULL;
270
271 while (entry != &dev->fib_list) {
272 fibctx = list_entry(entry, struct aac_fib_context, next);
273 /*
274 * Extract the AdapterFibContext from the Input parameters.
275 */
276 if (fibctx->unique == f.fibctx) { /* We found a winner */
277 break;
278 }
279 entry = entry->next;
280 fibctx = NULL;
281 }
282 if (!fibctx) {
283 spin_unlock_irqrestore(&dev->fib_lock, flags);
284 dprintk ((KERN_INFO "Fib Context not found\n"));
285 return -EINVAL;
286 }
287
288 if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
289 (fibctx->size != sizeof(struct aac_fib_context))) {
290 spin_unlock_irqrestore(&dev->fib_lock, flags);
291 dprintk ((KERN_INFO "Fib Context corrupt?\n"));
292 return -EINVAL;
293 }
294 status = 0;
295 /*
296 * If there are no fibs to send back, then either wait or return
297 * -EAGAIN
298 */
299 return_fib:
300 if (!list_empty(&fibctx->fib_list)) {
301 /*
302 * Pull the next fib from the fibs
303 */
304 entry = fibctx->fib_list.next;
305 list_del(entry);
306
307 fib = list_entry(entry, struct fib, fiblink);
308 fibctx->count--;
309 spin_unlock_irqrestore(&dev->fib_lock, flags);
310 if (copy_to_user(f.fib, fib->hw_fib_va, sizeof(struct hw_fib))) {
311 kfree(fib->hw_fib_va);
312 kfree(fib);
313 return -EFAULT;
314 }
315 /*
316 * Free the space occupied by this copy of the fib.
317 */
318 kfree(fib->hw_fib_va);
319 kfree(fib);
320 status = 0;
321 } else {
322 spin_unlock_irqrestore(&dev->fib_lock, flags);
323 /* If someone killed the AIF aacraid thread, restart it */
324 status = !dev->aif_thread;
325 if (status && !dev->in_reset && dev->queues && dev->fsa_dev) {
326 /* Be paranoid, be very paranoid! */
327 kthread_stop(dev->thread);
328 ssleep(1);
329 dev->aif_thread = 0;
330 dev->thread = kthread_run(aac_command_thread, dev,
331 "%s", dev->name);
332 ssleep(1);
333 }
334 if (f.wait) {
335 if(down_interruptible(&fibctx->wait_sem) < 0) {
336 status = -ERESTARTSYS;
337 } else {
338 /* Lock again and retry */
339 spin_lock_irqsave(&dev->fib_lock, flags);
340 goto return_fib;
341 }
342 } else {
343 status = -EAGAIN;
344 }
345 }
346 fibctx->jiffies = jiffies/HZ;
347 return status;
348 }
349
350 int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx)
351 {
352 struct fib *fib;
353
354 /*
355 * First free any FIBs that have not been consumed.
356 */
357 while (!list_empty(&fibctx->fib_list)) {
358 struct list_head * entry;
359 /*
360 * Pull the next fib from the fibs
361 */
362 entry = fibctx->fib_list.next;
363 list_del(entry);
364 fib = list_entry(entry, struct fib, fiblink);
365 fibctx->count--;
366 /*
367 * Free the space occupied by this copy of the fib.
368 */
369 kfree(fib->hw_fib_va);
370 kfree(fib);
371 }
372 /*
373 * Remove the Context from the AdapterFibContext List
374 */
375 list_del(&fibctx->next);
376 /*
377 * Invalidate context
378 */
379 fibctx->type = 0;
380 /*
381 * Free the space occupied by the Context
382 */
383 kfree(fibctx);
384 return 0;
385 }
386
387 /**
388 * close_getadapter_fib - close down user fib context
389 * @dev: adapter
390 * @arg: ioctl arguments
391 *
392 * This routine will close down the fibctx passed in from the user.
393 */
394
395 static int close_getadapter_fib(struct aac_dev * dev, void __user *arg)
396 {
397 struct aac_fib_context *fibctx;
398 int status;
399 unsigned long flags;
400 struct list_head * entry;
401
402 /*
403 * Verify that the HANDLE passed in was a valid AdapterFibContext
404 *
405 * Search the list of AdapterFibContext addresses on the adapter
406 * to be sure this is a valid address
407 */
408
409 entry = dev->fib_list.next;
410 fibctx = NULL;
411
412 while(entry != &dev->fib_list) {
413 fibctx = list_entry(entry, struct aac_fib_context, next);
414 /*
415 * Extract the fibctx from the input parameters
416 */
417 if (fibctx->unique == (u32)(uintptr_t)arg) /* We found a winner */
418 break;
419 entry = entry->next;
420 fibctx = NULL;
421 }
422
423 if (!fibctx)
424 return 0; /* Already gone */
425
426 if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
427 (fibctx->size != sizeof(struct aac_fib_context)))
428 return -EINVAL;
429 spin_lock_irqsave(&dev->fib_lock, flags);
430 status = aac_close_fib_context(dev, fibctx);
431 spin_unlock_irqrestore(&dev->fib_lock, flags);
432 return status;
433 }
434
435 /**
436 * check_revision - close down user fib context
437 * @dev: adapter
438 * @arg: ioctl arguments
439 *
440 * This routine returns the driver version.
441 * Under Linux, there have been no version incompatibilities, so this is
442 * simple!
443 */
444
445 static int check_revision(struct aac_dev *dev, void __user *arg)
446 {
447 struct revision response;
448 char *driver_version = aac_driver_version;
449 u32 version;
450
451 response.compat = 1;
452 version = (simple_strtol(driver_version,
453 &driver_version, 10) << 24) | 0x00000400;
454 version += simple_strtol(driver_version + 1, &driver_version, 10) << 16;
455 version += simple_strtol(driver_version + 1, NULL, 10);
456 response.version = cpu_to_le32(version);
457 # ifdef AAC_DRIVER_BUILD
458 response.build = cpu_to_le32(AAC_DRIVER_BUILD);
459 # else
460 response.build = cpu_to_le32(9999);
461 # endif
462
463 if (copy_to_user(arg, &response, sizeof(response)))
464 return -EFAULT;
465 return 0;
466 }
467
468
469 /**
470 *
471 * aac_send_raw_scb
472 *
473 */
474
475 static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
476 {
477 struct fib* srbfib;
478 int status;
479 struct aac_srb *srbcmd = NULL;
480 struct user_aac_srb *user_srbcmd = NULL;
481 struct user_aac_srb __user *user_srb = arg;
482 struct aac_srb_reply __user *user_reply;
483 struct aac_srb_reply* reply;
484 u32 fibsize = 0;
485 u32 flags = 0;
486 s32 rcode = 0;
487 u32 data_dir;
488 void __user *sg_user[32];
489 void *sg_list[32];
490 u32 sg_indx = 0;
491 u32 byte_count = 0;
492 u32 actual_fibsize64, actual_fibsize = 0;
493 int i;
494
495
496 if (dev->in_reset) {
497 dprintk((KERN_DEBUG"aacraid: send raw srb -EBUSY\n"));
498 return -EBUSY;
499 }
500 if (!capable(CAP_SYS_ADMIN)){
501 dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n"));
502 return -EPERM;
503 }
504 /*
505 * Allocate and initialize a Fib then setup a SRB command
506 */
507 if (!(srbfib = aac_fib_alloc(dev))) {
508 return -ENOMEM;
509 }
510 aac_fib_init(srbfib);
511 /* raw_srb FIB is not FastResponseCapable */
512 srbfib->hw_fib_va->header.XferState &= ~cpu_to_le32(FastResponseCapable);
513
514 srbcmd = (struct aac_srb*) fib_data(srbfib);
515
516 memset(sg_list, 0, sizeof(sg_list)); /* cleanup may take issue */
517 if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){
518 dprintk((KERN_DEBUG"aacraid: Could not copy data size from user\n"));
519 rcode = -EFAULT;
520 goto cleanup;
521 }
522
523 if ((fibsize < (sizeof(struct user_aac_srb) - sizeof(struct user_sgentry))) ||
524 (fibsize > (dev->max_fib_size - sizeof(struct aac_fibhdr)))) {
525 rcode = -EINVAL;
526 goto cleanup;
527 }
528
529 user_srbcmd = kmalloc(fibsize, GFP_KERNEL);
530 if (!user_srbcmd) {
531 dprintk((KERN_DEBUG"aacraid: Could not make a copy of the srb\n"));
532 rcode = -ENOMEM;
533 goto cleanup;
534 }
535 if(copy_from_user(user_srbcmd, user_srb,fibsize)){
536 dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n"));
537 rcode = -EFAULT;
538 goto cleanup;
539 }
540
541 user_reply = arg+fibsize;
542
543 flags = user_srbcmd->flags; /* from user in cpu order */
544 // Fix up srb for endian and force some values
545
546 srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi); // Force this
547 srbcmd->channel = cpu_to_le32(user_srbcmd->channel);
548 srbcmd->id = cpu_to_le32(user_srbcmd->id);
549 srbcmd->lun = cpu_to_le32(user_srbcmd->lun);
550 srbcmd->timeout = cpu_to_le32(user_srbcmd->timeout);
551 srbcmd->flags = cpu_to_le32(flags);
552 srbcmd->retry_limit = 0; // Obsolete parameter
553 srbcmd->cdb_size = cpu_to_le32(user_srbcmd->cdb_size);
554 memcpy(srbcmd->cdb, user_srbcmd->cdb, sizeof(srbcmd->cdb));
555
556 switch (flags & (SRB_DataIn | SRB_DataOut)) {
557 case SRB_DataOut:
558 data_dir = DMA_TO_DEVICE;
559 break;
560 case (SRB_DataIn | SRB_DataOut):
561 data_dir = DMA_BIDIRECTIONAL;
562 break;
563 case SRB_DataIn:
564 data_dir = DMA_FROM_DEVICE;
565 break;
566 default:
567 data_dir = DMA_NONE;
568 }
569 if (user_srbcmd->sg.count > ARRAY_SIZE(sg_list)) {
570 dprintk((KERN_DEBUG"aacraid: too many sg entries %d\n",
571 le32_to_cpu(srbcmd->sg.count)));
572 rcode = -EINVAL;
573 goto cleanup;
574 }
575 actual_fibsize = sizeof(struct aac_srb) - sizeof(struct sgentry) +
576 ((user_srbcmd->sg.count & 0xff) * sizeof(struct sgentry));
577 actual_fibsize64 = actual_fibsize + (user_srbcmd->sg.count & 0xff) *
578 (sizeof(struct sgentry64) - sizeof(struct sgentry));
579 /* User made a mistake - should not continue */
580 if ((actual_fibsize != fibsize) && (actual_fibsize64 != fibsize)) {
581 dprintk((KERN_DEBUG"aacraid: Bad Size specified in "
582 "Raw SRB command calculated fibsize=%lu;%lu "
583 "user_srbcmd->sg.count=%d aac_srb=%lu sgentry=%lu;%lu "
584 "issued fibsize=%d\n",
585 actual_fibsize, actual_fibsize64, user_srbcmd->sg.count,
586 sizeof(struct aac_srb), sizeof(struct sgentry),
587 sizeof(struct sgentry64), fibsize));
588 rcode = -EINVAL;
589 goto cleanup;
590 }
591 if ((data_dir == DMA_NONE) && user_srbcmd->sg.count) {
592 dprintk((KERN_DEBUG"aacraid: SG with no direction specified in Raw SRB command\n"));
593 rcode = -EINVAL;
594 goto cleanup;
595 }
596 byte_count = 0;
597 if (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64) {
598 struct user_sgmap64* upsg = (struct user_sgmap64*)&user_srbcmd->sg;
599 struct sgmap64* psg = (struct sgmap64*)&srbcmd->sg;
600
601 /*
602 * This should also catch if user used the 32 bit sgmap
603 */
604 if (actual_fibsize64 == fibsize) {
605 actual_fibsize = actual_fibsize64;
606 for (i = 0; i < upsg->count; i++) {
607 u64 addr;
608 void* p;
609 if (upsg->sg[i].count >
610 ((dev->adapter_info.options &
611 AAC_OPT_NEW_COMM) ?
612 (dev->scsi_host_ptr->max_sectors << 9) :
613 65536)) {
614 rcode = -EINVAL;
615 goto cleanup;
616 }
617 /* Does this really need to be GFP_DMA? */
618 p = kmalloc(upsg->sg[i].count,GFP_KERNEL|__GFP_DMA);
619 if(!p) {
620 dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
621 upsg->sg[i].count,i,upsg->count));
622 rcode = -ENOMEM;
623 goto cleanup;
624 }
625 addr = (u64)upsg->sg[i].addr[0];
626 addr += ((u64)upsg->sg[i].addr[1]) << 32;
627 sg_user[i] = (void __user *)(uintptr_t)addr;
628 sg_list[i] = p; // save so we can clean up later
629 sg_indx = i;
630
631 if (flags & SRB_DataOut) {
632 if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
633 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
634 rcode = -EFAULT;
635 goto cleanup;
636 }
637 }
638 addr = pci_map_single(dev->pdev, p, upsg->sg[i].count, data_dir);
639
640 psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
641 psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
642 byte_count += upsg->sg[i].count;
643 psg->sg[i].count = cpu_to_le32(upsg->sg[i].count);
644 }
645 } else {
646 struct user_sgmap* usg;
647 usg = kmemdup(upsg,
648 actual_fibsize - sizeof(struct aac_srb)
649 + sizeof(struct sgmap), GFP_KERNEL);
650 if (!usg) {
651 dprintk((KERN_DEBUG"aacraid: Allocation error in Raw SRB command\n"));
652 rcode = -ENOMEM;
653 goto cleanup;
654 }
655 actual_fibsize = actual_fibsize64;
656
657 for (i = 0; i < usg->count; i++) {
658 u64 addr;
659 void* p;
660 if (usg->sg[i].count >
661 ((dev->adapter_info.options &
662 AAC_OPT_NEW_COMM) ?
663 (dev->scsi_host_ptr->max_sectors << 9) :
664 65536)) {
665 kfree(usg);
666 rcode = -EINVAL;
667 goto cleanup;
668 }
669 /* Does this really need to be GFP_DMA? */
670 p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
671 if(!p) {
672 dprintk((KERN_DEBUG "aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
673 usg->sg[i].count,i,usg->count));
674 kfree(usg);
675 rcode = -ENOMEM;
676 goto cleanup;
677 }
678 sg_user[i] = (void __user *)(uintptr_t)usg->sg[i].addr;
679 sg_list[i] = p; // save so we can clean up later
680 sg_indx = i;
681
682 if (flags & SRB_DataOut) {
683 if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
684 kfree (usg);
685 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
686 rcode = -EFAULT;
687 goto cleanup;
688 }
689 }
690 addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir);
691
692 psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
693 psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
694 byte_count += usg->sg[i].count;
695 psg->sg[i].count = cpu_to_le32(usg->sg[i].count);
696 }
697 kfree (usg);
698 }
699 srbcmd->count = cpu_to_le32(byte_count);
700 if (user_srbcmd->sg.count)
701 psg->count = cpu_to_le32(sg_indx+1);
702 else
703 psg->count = 0;
704 status = aac_fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,NULL,NULL);
705 } else {
706 struct user_sgmap* upsg = &user_srbcmd->sg;
707 struct sgmap* psg = &srbcmd->sg;
708
709 if (actual_fibsize64 == fibsize) {
710 struct user_sgmap64* usg = (struct user_sgmap64 *)upsg;
711 for (i = 0; i < upsg->count; i++) {
712 uintptr_t addr;
713 void* p;
714 if (usg->sg[i].count >
715 ((dev->adapter_info.options &
716 AAC_OPT_NEW_COMM) ?
717 (dev->scsi_host_ptr->max_sectors << 9) :
718 65536)) {
719 rcode = -EINVAL;
720 goto cleanup;
721 }
722 /* Does this really need to be GFP_DMA? */
723 p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
724 if(!p) {
725 dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
726 usg->sg[i].count,i,usg->count));
727 rcode = -ENOMEM;
728 goto cleanup;
729 }
730 addr = (u64)usg->sg[i].addr[0];
731 addr += ((u64)usg->sg[i].addr[1]) << 32;
732 sg_user[i] = (void __user *)addr;
733 sg_list[i] = p; // save so we can clean up later
734 sg_indx = i;
735
736 if (flags & SRB_DataOut) {
737 if(copy_from_user(p,sg_user[i],usg->sg[i].count)){
738 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
739 rcode = -EFAULT;
740 goto cleanup;
741 }
742 }
743 addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir);
744
745 psg->sg[i].addr = cpu_to_le32(addr & 0xffffffff);
746 byte_count += usg->sg[i].count;
747 psg->sg[i].count = cpu_to_le32(usg->sg[i].count);
748 }
749 } else {
750 for (i = 0; i < upsg->count; i++) {
751 dma_addr_t addr;
752 void* p;
753 if (upsg->sg[i].count >
754 ((dev->adapter_info.options &
755 AAC_OPT_NEW_COMM) ?
756 (dev->scsi_host_ptr->max_sectors << 9) :
757 65536)) {
758 rcode = -EINVAL;
759 goto cleanup;
760 }
761 p = kmalloc(upsg->sg[i].count, GFP_KERNEL);
762 if (!p) {
763 dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
764 upsg->sg[i].count, i, upsg->count));
765 rcode = -ENOMEM;
766 goto cleanup;
767 }
768 sg_user[i] = (void __user *)(uintptr_t)upsg->sg[i].addr;
769 sg_list[i] = p; // save so we can clean up later
770 sg_indx = i;
771
772 if (flags & SRB_DataOut) {
773 if(copy_from_user(p, sg_user[i],
774 upsg->sg[i].count)) {
775 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
776 rcode = -EFAULT;
777 goto cleanup;
778 }
779 }
780 addr = pci_map_single(dev->pdev, p,
781 upsg->sg[i].count, data_dir);
782
783 psg->sg[i].addr = cpu_to_le32(addr);
784 byte_count += upsg->sg[i].count;
785 psg->sg[i].count = cpu_to_le32(upsg->sg[i].count);
786 }
787 }
788 srbcmd->count = cpu_to_le32(byte_count);
789 if (user_srbcmd->sg.count)
790 psg->count = cpu_to_le32(sg_indx+1);
791 else
792 psg->count = 0;
793 status = aac_fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, NULL, NULL);
794 }
795 if (status == -ERESTARTSYS) {
796 rcode = -ERESTARTSYS;
797 goto cleanup;
798 }
799
800 if (status != 0){
801 dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n"));
802 rcode = -ENXIO;
803 goto cleanup;
804 }
805
806 if (flags & SRB_DataIn) {
807 for(i = 0 ; i <= sg_indx; i++){
808 byte_count = le32_to_cpu(
809 (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64)
810 ? ((struct sgmap64*)&srbcmd->sg)->sg[i].count
811 : srbcmd->sg.sg[i].count);
812 if(copy_to_user(sg_user[i], sg_list[i], byte_count)){
813 dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n"));
814 rcode = -EFAULT;
815 goto cleanup;
816
817 }
818 }
819 }
820
821 reply = (struct aac_srb_reply *) fib_data(srbfib);
822 if(copy_to_user(user_reply,reply,sizeof(struct aac_srb_reply))){
823 dprintk((KERN_DEBUG"aacraid: Could not copy reply to user\n"));
824 rcode = -EFAULT;
825 goto cleanup;
826 }
827
828 cleanup:
829 kfree(user_srbcmd);
830 for(i=0; i <= sg_indx; i++){
831 kfree(sg_list[i]);
832 }
833 if (rcode != -ERESTARTSYS) {
834 aac_fib_complete(srbfib);
835 aac_fib_free(srbfib);
836 }
837
838 return rcode;
839 }
840
841 struct aac_pci_info {
842 u32 bus;
843 u32 slot;
844 };
845
846
847 static int aac_get_pci_info(struct aac_dev* dev, void __user *arg)
848 {
849 struct aac_pci_info pci_info;
850
851 pci_info.bus = dev->pdev->bus->number;
852 pci_info.slot = PCI_SLOT(dev->pdev->devfn);
853
854 if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) {
855 dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n"));
856 return -EFAULT;
857 }
858 return 0;
859 }
860
861
862 int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
863 {
864 int status;
865
866 mutex_lock(&dev->ioctl_mutex);
867
868 if (dev->adapter_shutdown) {
869 status = -EACCES;
870 goto cleanup;
871 }
872
873 /*
874 * HBA gets first crack
875 */
876
877 status = aac_dev_ioctl(dev, cmd, arg);
878 if (status != -ENOTTY)
879 goto cleanup;
880
881 switch (cmd) {
882 case FSACTL_MINIPORT_REV_CHECK:
883 status = check_revision(dev, arg);
884 break;
885 case FSACTL_SEND_LARGE_FIB:
886 case FSACTL_SENDFIB:
887 status = ioctl_send_fib(dev, arg);
888 break;
889 case FSACTL_OPEN_GET_ADAPTER_FIB:
890 status = open_getadapter_fib(dev, arg);
891 break;
892 case FSACTL_GET_NEXT_ADAPTER_FIB:
893 status = next_getadapter_fib(dev, arg);
894 break;
895 case FSACTL_CLOSE_GET_ADAPTER_FIB:
896 status = close_getadapter_fib(dev, arg);
897 break;
898 case FSACTL_SEND_RAW_SRB:
899 status = aac_send_raw_srb(dev,arg);
900 break;
901 case FSACTL_GET_PCI_INFO:
902 status = aac_get_pci_info(dev,arg);
903 break;
904 default:
905 status = -ENOTTY;
906 break;
907 }
908
909 cleanup:
910 mutex_unlock(&dev->ioctl_mutex);
911
912 return status;
913 }
914
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