Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/juhl/trivial
[linux-2.6] / drivers / scsi / aacraid / commctrl.c
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) 2000-2007 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>
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>
40 #include <linux/delay.h> /* ssleep prototype */
41 #include <linux/kthread.h>
42 #include <linux/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  */
55 # define AAC_DEBUG_PREAMBLE     KERN_INFO
56 # define AAC_DEBUG_POSTAMBLE
57
58 static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
59 {
60         struct hw_fib * kfib;
61         struct fib *fibptr;
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;
66
67         if (dev->in_reset) {
68                 return -EBUSY;
69         }
70         fibptr = aac_fib_alloc(dev);
71         if(fibptr == NULL) {
72                 return -ENOMEM;
73         }
74
75         kfib = fibptr->hw_fib_va;
76         /*
77          *      First copy in the header so that we can check the size field.
78          */
79         if (copy_from_user((void *)kfib, arg, sizeof(struct aac_fibhdr))) {
80                 aac_fib_free(fibptr);
81                 return -EFAULT;
82         }
83         /*
84          *      Since we copy based on the fib header size, make sure that we
85          *      will not overrun the buffer when we copy the memory. Return
86          *      an error if we would.
87          */
88         size = le16_to_cpu(kfib->header.Size) + sizeof(struct aac_fibhdr);
89         if (size < le16_to_cpu(kfib->header.SenderSize))
90                 size = le16_to_cpu(kfib->header.SenderSize);
91         if (size > dev->max_fib_size) {
92                 if (size > 2048) {
93                         retval = -EINVAL;
94                         goto cleanup;
95                 }
96                 /* Highjack the hw_fib */
97                 hw_fib = fibptr->hw_fib_va;
98                 hw_fib_pa = fibptr->hw_fib_pa;
99                 fibptr->hw_fib_va = kfib = pci_alloc_consistent(dev->pdev, size, &fibptr->hw_fib_pa);
100                 memset(((char *)kfib) + dev->max_fib_size, 0, size - dev->max_fib_size);
101                 memcpy(kfib, hw_fib, dev->max_fib_size);
102         }
103
104         if (copy_from_user(kfib, arg, size)) {
105                 retval = -EFAULT;
106                 goto cleanup;
107         }
108
109         if (kfib->header.Command == cpu_to_le16(TakeABreakPt)) {
110                 aac_adapter_interrupt(dev);
111                 /*
112                  * Since we didn't really send a fib, zero out the state to allow
113                  * cleanup code not to assert.
114                  */
115                 kfib->header.XferState = 0;
116         } else {
117                 retval = aac_fib_send(le16_to_cpu(kfib->header.Command), fibptr,
118                                 le16_to_cpu(kfib->header.Size) , FsaNormal,
119                                 1, 1, NULL, NULL);
120                 if (retval) {
121                         goto cleanup;
122                 }
123                 if (aac_fib_complete(fibptr) != 0) {
124                         retval = -EINVAL;
125                         goto cleanup;
126                 }
127         }
128         /*
129          *      Make sure that the size returned by the adapter (which includes
130          *      the header) is less than or equal to the size of a fib, so we
131          *      don't corrupt application data. Then copy that size to the user
132          *      buffer. (Don't try to add the header information again, since it
133          *      was already included by the adapter.)
134          */
135
136         retval = 0;
137         if (copy_to_user(arg, (void *)kfib, size))
138                 retval = -EFAULT;
139 cleanup:
140         if (hw_fib) {
141                 pci_free_consistent(dev->pdev, size, kfib, fibptr->hw_fib_pa);
142                 fibptr->hw_fib_pa = hw_fib_pa;
143                 fibptr->hw_fib_va = hw_fib;
144         }
145         if (retval != -EINTR)
146                 aac_fib_free(fibptr);
147         return retval;
148 }
149
150 /**
151  *      open_getadapter_fib     -       Get the next fib
152  *
153  *      This routine will get the next Fib, if available, from the AdapterFibContext
154  *      passed in from the user.
155  */
156
157 static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
158 {
159         struct aac_fib_context * fibctx;
160         int status;
161
162         fibctx = kmalloc(sizeof(struct aac_fib_context), GFP_KERNEL);
163         if (fibctx == NULL) {
164                 status = -ENOMEM;
165         } else {
166                 unsigned long flags;
167                 struct list_head * entry;
168                 struct aac_fib_context * context;
169
170                 fibctx->type = FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT;
171                 fibctx->size = sizeof(struct aac_fib_context);
172                 /*
173                  *      Yes yes, I know this could be an index, but we have a
174                  * better guarantee of uniqueness for the locked loop below.
175                  * Without the aid of a persistent history, this also helps
176                  * reduce the chance that the opaque context would be reused.
177                  */
178                 fibctx->unique = (u32)((ulong)fibctx & 0xFFFFFFFF);
179                 /*
180                  *      Initialize the mutex used to wait for the next AIF.
181                  */
182                 init_MUTEX_LOCKED(&fibctx->wait_sem);
183                 fibctx->wait = 0;
184                 /*
185                  *      Initialize the fibs and set the count of fibs on
186                  *      the list to 0.
187                  */
188                 fibctx->count = 0;
189                 INIT_LIST_HEAD(&fibctx->fib_list);
190                 fibctx->jiffies = jiffies/HZ;
191                 /*
192                  *      Now add this context onto the adapter's
193                  *      AdapterFibContext list.
194                  */
195                 spin_lock_irqsave(&dev->fib_lock, flags);
196                 /* Ensure that we have a unique identifier */
197                 entry = dev->fib_list.next;
198                 while (entry != &dev->fib_list) {
199                         context = list_entry(entry, struct aac_fib_context, next);
200                         if (context->unique == fibctx->unique) {
201                                 /* Not unique (32 bits) */
202                                 fibctx->unique++;
203                                 entry = dev->fib_list.next;
204                         } else {
205                                 entry = entry->next;
206                         }
207                 }
208                 list_add_tail(&fibctx->next, &dev->fib_list);
209                 spin_unlock_irqrestore(&dev->fib_lock, flags);
210                 if (copy_to_user(arg, &fibctx->unique,
211                                                 sizeof(fibctx->unique))) {
212                         status = -EFAULT;
213                 } else {
214                         status = 0;
215                 }
216         }
217         return status;
218 }
219
220 /**
221  *      next_getadapter_fib     -       get the next fib
222  *      @dev: adapter to use
223  *      @arg: ioctl argument
224  *
225  *      This routine will get the next Fib, if available, from the AdapterFibContext
226  *      passed in from the user.
227  */
228
229 static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
230 {
231         struct fib_ioctl f;
232         struct fib *fib;
233         struct aac_fib_context *fibctx;
234         int status;
235         struct list_head * entry;
236         unsigned long flags;
237
238         if(copy_from_user((void *)&f, arg, sizeof(struct fib_ioctl)))
239                 return -EFAULT;
240         /*
241          *      Verify that the HANDLE passed in was a valid AdapterFibContext
242          *
243          *      Search the list of AdapterFibContext addresses on the adapter
244          *      to be sure this is a valid address
245          */
246         spin_lock_irqsave(&dev->fib_lock, flags);
247         entry = dev->fib_list.next;
248         fibctx = NULL;
249
250         while (entry != &dev->fib_list) {
251                 fibctx = list_entry(entry, struct aac_fib_context, next);
252                 /*
253                  *      Extract the AdapterFibContext from the Input parameters.
254                  */
255                 if (fibctx->unique == f.fibctx) { /* We found a winner */
256                         break;
257                 }
258                 entry = entry->next;
259                 fibctx = NULL;
260         }
261         if (!fibctx) {
262                 spin_unlock_irqrestore(&dev->fib_lock, flags);
263                 dprintk ((KERN_INFO "Fib Context not found\n"));
264                 return -EINVAL;
265         }
266
267         if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
268                  (fibctx->size != sizeof(struct aac_fib_context))) {
269                 spin_unlock_irqrestore(&dev->fib_lock, flags);
270                 dprintk ((KERN_INFO "Fib Context corrupt?\n"));
271                 return -EINVAL;
272         }
273         status = 0;
274         /*
275          *      If there are no fibs to send back, then either wait or return
276          *      -EAGAIN
277          */
278 return_fib:
279         if (!list_empty(&fibctx->fib_list)) {
280                 /*
281                  *      Pull the next fib from the fibs
282                  */
283                 entry = fibctx->fib_list.next;
284                 list_del(entry);
285
286                 fib = list_entry(entry, struct fib, fiblink);
287                 fibctx->count--;
288                 spin_unlock_irqrestore(&dev->fib_lock, flags);
289                 if (copy_to_user(f.fib, fib->hw_fib_va, sizeof(struct hw_fib))) {
290                         kfree(fib->hw_fib_va);
291                         kfree(fib);
292                         return -EFAULT;
293                 }
294                 /*
295                  *      Free the space occupied by this copy of the fib.
296                  */
297                 kfree(fib->hw_fib_va);
298                 kfree(fib);
299                 status = 0;
300         } else {
301                 spin_unlock_irqrestore(&dev->fib_lock, flags);
302                 /* If someone killed the AIF aacraid thread, restart it */
303                 status = !dev->aif_thread;
304                 if (status && !dev->in_reset && dev->queues && dev->fsa_dev) {
305                         /* Be paranoid, be very paranoid! */
306                         kthread_stop(dev->thread);
307                         ssleep(1);
308                         dev->aif_thread = 0;
309                         dev->thread = kthread_run(aac_command_thread, dev, dev->name);
310                         ssleep(1);
311                 }
312                 if (f.wait) {
313                         if(down_interruptible(&fibctx->wait_sem) < 0) {
314                                 status = -EINTR;
315                         } else {
316                                 /* Lock again and retry */
317                                 spin_lock_irqsave(&dev->fib_lock, flags);
318                                 goto return_fib;
319                         }
320                 } else {
321                         status = -EAGAIN;
322                 }
323         }
324         fibctx->jiffies = jiffies/HZ;
325         return status;
326 }
327
328 int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx)
329 {
330         struct fib *fib;
331
332         /*
333          *      First free any FIBs that have not been consumed.
334          */
335         while (!list_empty(&fibctx->fib_list)) {
336                 struct list_head * entry;
337                 /*
338                  *      Pull the next fib from the fibs
339                  */
340                 entry = fibctx->fib_list.next;
341                 list_del(entry);
342                 fib = list_entry(entry, struct fib, fiblink);
343                 fibctx->count--;
344                 /*
345                  *      Free the space occupied by this copy of the fib.
346                  */
347                 kfree(fib->hw_fib_va);
348                 kfree(fib);
349         }
350         /*
351          *      Remove the Context from the AdapterFibContext List
352          */
353         list_del(&fibctx->next);
354         /*
355          *      Invalidate context
356          */
357         fibctx->type = 0;
358         /*
359          *      Free the space occupied by the Context
360          */
361         kfree(fibctx);
362         return 0;
363 }
364
365 /**
366  *      close_getadapter_fib    -       close down user fib context
367  *      @dev: adapter
368  *      @arg: ioctl arguments
369  *
370  *      This routine will close down the fibctx passed in from the user.
371  */
372
373 static int close_getadapter_fib(struct aac_dev * dev, void __user *arg)
374 {
375         struct aac_fib_context *fibctx;
376         int status;
377         unsigned long flags;
378         struct list_head * entry;
379
380         /*
381          *      Verify that the HANDLE passed in was a valid AdapterFibContext
382          *
383          *      Search the list of AdapterFibContext addresses on the adapter
384          *      to be sure this is a valid address
385          */
386
387         entry = dev->fib_list.next;
388         fibctx = NULL;
389
390         while(entry != &dev->fib_list) {
391                 fibctx = list_entry(entry, struct aac_fib_context, next);
392                 /*
393                  *      Extract the fibctx from the input parameters
394                  */
395                 if (fibctx->unique == (u32)(uintptr_t)arg) /* We found a winner */
396                         break;
397                 entry = entry->next;
398                 fibctx = NULL;
399         }
400
401         if (!fibctx)
402                 return 0; /* Already gone */
403
404         if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
405                  (fibctx->size != sizeof(struct aac_fib_context)))
406                 return -EINVAL;
407         spin_lock_irqsave(&dev->fib_lock, flags);
408         status = aac_close_fib_context(dev, fibctx);
409         spin_unlock_irqrestore(&dev->fib_lock, flags);
410         return status;
411 }
412
413 /**
414  *      check_revision  -       close down user fib context
415  *      @dev: adapter
416  *      @arg: ioctl arguments
417  *
418  *      This routine returns the driver version.
419  *      Under Linux, there have been no version incompatibilities, so this is
420  *      simple!
421  */
422
423 static int check_revision(struct aac_dev *dev, void __user *arg)
424 {
425         struct revision response;
426         char *driver_version = aac_driver_version;
427         u32 version;
428
429         response.compat = 1;
430         version = (simple_strtol(driver_version,
431                                 &driver_version, 10) << 24) | 0x00000400;
432         version += simple_strtol(driver_version + 1, &driver_version, 10) << 16;
433         version += simple_strtol(driver_version + 1, NULL, 10);
434         response.version = cpu_to_le32(version);
435 #       ifdef AAC_DRIVER_BUILD
436                 response.build = cpu_to_le32(AAC_DRIVER_BUILD);
437 #       else
438                 response.build = cpu_to_le32(9999);
439 #       endif
440
441         if (copy_to_user(arg, &response, sizeof(response)))
442                 return -EFAULT;
443         return 0;
444 }
445
446
447 /**
448  *
449  * aac_send_raw_scb
450  *
451  */
452
453 static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
454 {
455         struct fib* srbfib;
456         int status;
457         struct aac_srb *srbcmd = NULL;
458         struct user_aac_srb *user_srbcmd = NULL;
459         struct user_aac_srb __user *user_srb = arg;
460         struct aac_srb_reply __user *user_reply;
461         struct aac_srb_reply* reply;
462         u32 fibsize = 0;
463         u32 flags = 0;
464         s32 rcode = 0;
465         u32 data_dir;
466         void __user *sg_user[32];
467         void *sg_list[32];
468         u32 sg_indx = 0;
469         u32 byte_count = 0;
470         u32 actual_fibsize64, actual_fibsize = 0;
471         int i;
472
473
474         if (dev->in_reset) {
475                 dprintk((KERN_DEBUG"aacraid: send raw srb -EBUSY\n"));
476                 return -EBUSY;
477         }
478         if (!capable(CAP_SYS_ADMIN)){
479                 dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n"));
480                 return -EPERM;
481         }
482         /*
483          *      Allocate and initialize a Fib then setup a SRB command
484          */
485         if (!(srbfib = aac_fib_alloc(dev))) {
486                 return -ENOMEM;
487         }
488         aac_fib_init(srbfib);
489
490         srbcmd = (struct aac_srb*) fib_data(srbfib);
491
492         memset(sg_list, 0, sizeof(sg_list)); /* cleanup may take issue */
493         if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){
494                 dprintk((KERN_DEBUG"aacraid: Could not copy data size from user\n"));
495                 rcode = -EFAULT;
496                 goto cleanup;
497         }
498
499         if (fibsize > (dev->max_fib_size - sizeof(struct aac_fibhdr))) {
500                 rcode = -EINVAL;
501                 goto cleanup;
502         }
503
504         user_srbcmd = kmalloc(fibsize, GFP_KERNEL);
505         if (!user_srbcmd) {
506                 dprintk((KERN_DEBUG"aacraid: Could not make a copy of the srb\n"));
507                 rcode = -ENOMEM;
508                 goto cleanup;
509         }
510         if(copy_from_user(user_srbcmd, user_srb,fibsize)){
511                 dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n"));
512                 rcode = -EFAULT;
513                 goto cleanup;
514         }
515
516         user_reply = arg+fibsize;
517
518         flags = user_srbcmd->flags; /* from user in cpu order */
519         // Fix up srb for endian and force some values
520
521         srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);       // Force this
522         srbcmd->channel  = cpu_to_le32(user_srbcmd->channel);
523         srbcmd->id       = cpu_to_le32(user_srbcmd->id);
524         srbcmd->lun      = cpu_to_le32(user_srbcmd->lun);
525         srbcmd->timeout  = cpu_to_le32(user_srbcmd->timeout);
526         srbcmd->flags    = cpu_to_le32(flags);
527         srbcmd->retry_limit = 0; // Obsolete parameter
528         srbcmd->cdb_size = cpu_to_le32(user_srbcmd->cdb_size);
529         memcpy(srbcmd->cdb, user_srbcmd->cdb, sizeof(srbcmd->cdb));
530
531         switch (flags & (SRB_DataIn | SRB_DataOut)) {
532         case SRB_DataOut:
533                 data_dir = DMA_TO_DEVICE;
534                 break;
535         case (SRB_DataIn | SRB_DataOut):
536                 data_dir = DMA_BIDIRECTIONAL;
537                 break;
538         case SRB_DataIn:
539                 data_dir = DMA_FROM_DEVICE;
540                 break;
541         default:
542                 data_dir = DMA_NONE;
543         }
544         if (user_srbcmd->sg.count > ARRAY_SIZE(sg_list)) {
545                 dprintk((KERN_DEBUG"aacraid: too many sg entries %d\n",
546                   le32_to_cpu(srbcmd->sg.count)));
547                 rcode = -EINVAL;
548                 goto cleanup;
549         }
550         actual_fibsize = sizeof(struct aac_srb) - sizeof(struct sgentry) +
551                 ((user_srbcmd->sg.count & 0xff) * sizeof(struct sgentry));
552         actual_fibsize64 = actual_fibsize + (user_srbcmd->sg.count & 0xff) *
553           (sizeof(struct sgentry64) - sizeof(struct sgentry));
554         /* User made a mistake - should not continue */
555         if ((actual_fibsize != fibsize) && (actual_fibsize64 != fibsize)) {
556                 dprintk((KERN_DEBUG"aacraid: Bad Size specified in "
557                   "Raw SRB command calculated fibsize=%lu;%lu "
558                   "user_srbcmd->sg.count=%d aac_srb=%lu sgentry=%lu;%lu "
559                   "issued fibsize=%d\n",
560                   actual_fibsize, actual_fibsize64, user_srbcmd->sg.count,
561                   sizeof(struct aac_srb), sizeof(struct sgentry),
562                   sizeof(struct sgentry64), fibsize));
563                 rcode = -EINVAL;
564                 goto cleanup;
565         }
566         if ((data_dir == DMA_NONE) && user_srbcmd->sg.count) {
567                 dprintk((KERN_DEBUG"aacraid: SG with no direction specified in Raw SRB command\n"));
568                 rcode = -EINVAL;
569                 goto cleanup;
570         }
571         byte_count = 0;
572         if (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64) {
573                 struct user_sgmap64* upsg = (struct user_sgmap64*)&user_srbcmd->sg;
574                 struct sgmap64* psg = (struct sgmap64*)&srbcmd->sg;
575
576                 /*
577                  * This should also catch if user used the 32 bit sgmap
578                  */
579                 if (actual_fibsize64 == fibsize) {
580                         actual_fibsize = actual_fibsize64;
581                         for (i = 0; i < upsg->count; i++) {
582                                 u64 addr;
583                                 void* p;
584                                 /* Does this really need to be GFP_DMA? */
585                                 p = kmalloc(upsg->sg[i].count,GFP_KERNEL|__GFP_DMA);
586                                 if(!p) {
587                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
588                                           upsg->sg[i].count,i,upsg->count));
589                                         rcode = -ENOMEM;
590                                         goto cleanup;
591                                 }
592                                 addr = (u64)upsg->sg[i].addr[0];
593                                 addr += ((u64)upsg->sg[i].addr[1]) << 32;
594                                 sg_user[i] = (void __user *)(uintptr_t)addr;
595                                 sg_list[i] = p; // save so we can clean up later
596                                 sg_indx = i;
597
598                                 if (flags & SRB_DataOut) {
599                                         if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
600                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
601                                                 rcode = -EFAULT;
602                                                 goto cleanup;
603                                         }
604                                 }
605                                 addr = pci_map_single(dev->pdev, p, upsg->sg[i].count, data_dir);
606
607                                 psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
608                                 psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
609                                 byte_count += upsg->sg[i].count;
610                                 psg->sg[i].count = cpu_to_le32(upsg->sg[i].count);
611                         }
612                 } else {
613                         struct user_sgmap* usg;
614                         usg = kmalloc(actual_fibsize - sizeof(struct aac_srb)
615                           + sizeof(struct sgmap), GFP_KERNEL);
616                         if (!usg) {
617                                 dprintk((KERN_DEBUG"aacraid: Allocation error in Raw SRB command\n"));
618                                 rcode = -ENOMEM;
619                                 goto cleanup;
620                         }
621                         memcpy (usg, upsg, actual_fibsize - sizeof(struct aac_srb)
622                           + sizeof(struct sgmap));
623                         actual_fibsize = actual_fibsize64;
624
625                         for (i = 0; i < usg->count; i++) {
626                                 u64 addr;
627                                 void* p;
628                                 /* Does this really need to be GFP_DMA? */
629                                 p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
630                                 if(!p) {
631                                         kfree (usg);
632                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
633                                           usg->sg[i].count,i,usg->count));
634                                         rcode = -ENOMEM;
635                                         goto cleanup;
636                                 }
637                                 sg_user[i] = (void __user *)(uintptr_t)usg->sg[i].addr;
638                                 sg_list[i] = p; // save so we can clean up later
639                                 sg_indx = i;
640
641                                 if (flags & SRB_DataOut) {
642                                         if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
643                                                 kfree (usg);
644                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
645                                                 rcode = -EFAULT;
646                                                 goto cleanup;
647                                         }
648                                 }
649                                 addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir);
650
651                                 psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
652                                 psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
653                                 byte_count += usg->sg[i].count;
654                                 psg->sg[i].count = cpu_to_le32(usg->sg[i].count);
655                         }
656                         kfree (usg);
657                 }
658                 srbcmd->count = cpu_to_le32(byte_count);
659                 psg->count = cpu_to_le32(sg_indx+1);
660                 status = aac_fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,NULL,NULL);
661         } else {
662                 struct user_sgmap* upsg = &user_srbcmd->sg;
663                 struct sgmap* psg = &srbcmd->sg;
664
665                 if (actual_fibsize64 == fibsize) {
666                         struct user_sgmap64* usg = (struct user_sgmap64 *)upsg;
667                         for (i = 0; i < upsg->count; i++) {
668                                 uintptr_t addr;
669                                 void* p;
670                                 /* Does this really need to be GFP_DMA? */
671                                 p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
672                                 if(!p) {
673                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
674                                           usg->sg[i].count,i,usg->count));
675                                         rcode = -ENOMEM;
676                                         goto cleanup;
677                                 }
678                                 addr = (u64)usg->sg[i].addr[0];
679                                 addr += ((u64)usg->sg[i].addr[1]) << 32;
680                                 sg_user[i] = (void __user *)addr;
681                                 sg_list[i] = p; // save so we can clean up later
682                                 sg_indx = i;
683
684                                 if (flags & SRB_DataOut) {
685                                         if(copy_from_user(p,sg_user[i],usg->sg[i].count)){
686                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
687                                                 rcode = -EFAULT;
688                                                 goto cleanup;
689                                         }
690                                 }
691                                 addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir);
692
693                                 psg->sg[i].addr = cpu_to_le32(addr & 0xffffffff);
694                                 byte_count += usg->sg[i].count;
695                                 psg->sg[i].count = cpu_to_le32(usg->sg[i].count);
696                         }
697                 } else {
698                         for (i = 0; i < upsg->count; i++) {
699                                 dma_addr_t addr;
700                                 void* p;
701                                 p = kmalloc(upsg->sg[i].count, GFP_KERNEL);
702                                 if (!p) {
703                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
704                                           upsg->sg[i].count, i, upsg->count));
705                                         rcode = -ENOMEM;
706                                         goto cleanup;
707                                 }
708                                 sg_user[i] = (void __user *)(uintptr_t)upsg->sg[i].addr;
709                                 sg_list[i] = p; // save so we can clean up later
710                                 sg_indx = i;
711
712                                 if (flags & SRB_DataOut) {
713                                         if(copy_from_user(p, sg_user[i],
714                                                         upsg->sg[i].count)) {
715                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
716                                                 rcode = -EFAULT;
717                                                 goto cleanup;
718                                         }
719                                 }
720                                 addr = pci_map_single(dev->pdev, p,
721                                         upsg->sg[i].count, data_dir);
722
723                                 psg->sg[i].addr = cpu_to_le32(addr);
724                                 byte_count += upsg->sg[i].count;
725                                 psg->sg[i].count = cpu_to_le32(upsg->sg[i].count);
726                         }
727                 }
728                 srbcmd->count = cpu_to_le32(byte_count);
729                 psg->count = cpu_to_le32(sg_indx+1);
730                 status = aac_fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, NULL, NULL);
731         }
732         if (status == -EINTR) {
733                 rcode = -EINTR;
734                 goto cleanup;
735         }
736
737         if (status != 0){
738                 dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n"));
739                 rcode = -ENXIO;
740                 goto cleanup;
741         }
742
743         if (flags & SRB_DataIn) {
744                 for(i = 0 ; i <= sg_indx; i++){
745                         byte_count = le32_to_cpu(
746                           (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64)
747                               ? ((struct sgmap64*)&srbcmd->sg)->sg[i].count
748                               : srbcmd->sg.sg[i].count);
749                         if(copy_to_user(sg_user[i], sg_list[i], byte_count)){
750                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n"));
751                                 rcode = -EFAULT;
752                                 goto cleanup;
753
754                         }
755                 }
756         }
757
758         reply = (struct aac_srb_reply *) fib_data(srbfib);
759         if(copy_to_user(user_reply,reply,sizeof(struct aac_srb_reply))){
760                 dprintk((KERN_DEBUG"aacraid: Could not copy reply to user\n"));
761                 rcode = -EFAULT;
762                 goto cleanup;
763         }
764
765 cleanup:
766         kfree(user_srbcmd);
767         for(i=0; i <= sg_indx; i++){
768                 kfree(sg_list[i]);
769         }
770         if (rcode != -EINTR) {
771                 aac_fib_complete(srbfib);
772                 aac_fib_free(srbfib);
773         }
774
775         return rcode;
776 }
777
778 struct aac_pci_info {
779         u32 bus;
780         u32 slot;
781 };
782
783
784 static int aac_get_pci_info(struct aac_dev* dev, void __user *arg)
785 {
786         struct aac_pci_info pci_info;
787
788         pci_info.bus = dev->pdev->bus->number;
789         pci_info.slot = PCI_SLOT(dev->pdev->devfn);
790
791         if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) {
792                 dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n"));
793                 return -EFAULT;
794         }
795         return 0;
796 }
797
798
799 int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
800 {
801         int status;
802
803         /*
804          *      HBA gets first crack
805          */
806
807         status = aac_dev_ioctl(dev, cmd, arg);
808         if(status != -ENOTTY)
809                 return status;
810
811         switch (cmd) {
812         case FSACTL_MINIPORT_REV_CHECK:
813                 status = check_revision(dev, arg);
814                 break;
815         case FSACTL_SEND_LARGE_FIB:
816         case FSACTL_SENDFIB:
817                 status = ioctl_send_fib(dev, arg);
818                 break;
819         case FSACTL_OPEN_GET_ADAPTER_FIB:
820                 status = open_getadapter_fib(dev, arg);
821                 break;
822         case FSACTL_GET_NEXT_ADAPTER_FIB:
823                 status = next_getadapter_fib(dev, arg);
824                 break;
825         case FSACTL_CLOSE_GET_ADAPTER_FIB:
826                 status = close_getadapter_fib(dev, arg);
827                 break;
828         case FSACTL_SEND_RAW_SRB:
829                 status = aac_send_raw_srb(dev,arg);
830                 break;
831         case FSACTL_GET_PCI_INFO:
832                 status = aac_get_pci_info(dev,arg);
833                 break;
834         default:
835                 status = -ENOTTY;
836                 break;
837         }
838         return status;
839 }
840