Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux...
[linux-2.6] / 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) 2000-2007 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 #include <scsi/scsi_host.h>
45
46 #include "aacraid.h"
47
48 /**
49  *      ioctl_send_fib  -       send a FIB from userspace
50  *      @dev:   adapter is being processed
51  *      @arg:   arguments to the ioctl call
52  *
53  *      This routine sends a fib to the adapter on behalf of a user level
54  *      program.
55  */
56 # define AAC_DEBUG_PREAMBLE     KERN_INFO
57 # define AAC_DEBUG_POSTAMBLE
58
59 static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
60 {
61         struct hw_fib * kfib;
62         struct fib *fibptr;
63         struct hw_fib * hw_fib = (struct hw_fib *)0;
64         dma_addr_t hw_fib_pa = (dma_addr_t)0LL;
65         unsigned size;
66         int retval;
67
68         if (dev->in_reset) {
69                 return -EBUSY;
70         }
71         fibptr = aac_fib_alloc(dev);
72         if(fibptr == NULL) {
73                 return -ENOMEM;
74         }
75
76         kfib = fibptr->hw_fib_va;
77         /*
78          *      First copy in the header so that we can check the size field.
79          */
80         if (copy_from_user((void *)kfib, arg, sizeof(struct aac_fibhdr))) {
81                 aac_fib_free(fibptr);
82                 return -EFAULT;
83         }
84         /*
85          *      Since we copy based on the fib header size, make sure that we
86          *      will not overrun the buffer when we copy the memory. Return
87          *      an error if we would.
88          */
89         size = le16_to_cpu(kfib->header.Size) + sizeof(struct aac_fibhdr);
90         if (size < le16_to_cpu(kfib->header.SenderSize))
91                 size = le16_to_cpu(kfib->header.SenderSize);
92         if (size > dev->max_fib_size) {
93                 dma_addr_t daddr;
94
95                 if (size > 2048) {
96                         retval = -EINVAL;
97                         goto cleanup;
98                 }
99
100                 kfib = pci_alloc_consistent(dev->pdev, size, &daddr);
101                 if (!kfib) {
102                         retval = -ENOMEM;
103                         goto cleanup;
104                 }
105
106                 /* Highjack the hw_fib */
107                 hw_fib = fibptr->hw_fib_va;
108                 hw_fib_pa = fibptr->hw_fib_pa;
109                 fibptr->hw_fib_va = kfib;
110                 fibptr->hw_fib_pa = daddr;
111                 memset(((char *)kfib) + dev->max_fib_size, 0, size - dev->max_fib_size);
112                 memcpy(kfib, hw_fib, dev->max_fib_size);
113         }
114
115         if (copy_from_user(kfib, arg, size)) {
116                 retval = -EFAULT;
117                 goto cleanup;
118         }
119
120         if (kfib->header.Command == cpu_to_le16(TakeABreakPt)) {
121                 aac_adapter_interrupt(dev);
122                 /*
123                  * Since we didn't really send a fib, zero out the state to allow
124                  * cleanup code not to assert.
125                  */
126                 kfib->header.XferState = 0;
127         } else {
128                 retval = aac_fib_send(le16_to_cpu(kfib->header.Command), fibptr,
129                                 le16_to_cpu(kfib->header.Size) , FsaNormal,
130                                 1, 1, NULL, NULL);
131                 if (retval) {
132                         goto cleanup;
133                 }
134                 if (aac_fib_complete(fibptr) != 0) {
135                         retval = -EINVAL;
136                         goto cleanup;
137                 }
138         }
139         /*
140          *      Make sure that the size returned by the adapter (which includes
141          *      the header) is less than or equal to the size of a fib, so we
142          *      don't corrupt application data. Then copy that size to the user
143          *      buffer. (Don't try to add the header information again, since it
144          *      was already included by the adapter.)
145          */
146
147         retval = 0;
148         if (copy_to_user(arg, (void *)kfib, size))
149                 retval = -EFAULT;
150 cleanup:
151         if (hw_fib) {
152                 pci_free_consistent(dev->pdev, size, kfib, fibptr->hw_fib_pa);
153                 fibptr->hw_fib_pa = hw_fib_pa;
154                 fibptr->hw_fib_va = hw_fib;
155         }
156         if (retval != -EINTR)
157                 aac_fib_free(fibptr);
158         return retval;
159 }
160
161 /**
162  *      open_getadapter_fib     -       Get the next fib
163  *
164  *      This routine will get the next Fib, if available, from the AdapterFibContext
165  *      passed in from the user.
166  */
167
168 static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
169 {
170         struct aac_fib_context * fibctx;
171         int status;
172
173         fibctx = kmalloc(sizeof(struct aac_fib_context), GFP_KERNEL);
174         if (fibctx == NULL) {
175                 status = -ENOMEM;
176         } else {
177                 unsigned long flags;
178                 struct list_head * entry;
179                 struct aac_fib_context * context;
180
181                 fibctx->type = FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT;
182                 fibctx->size = sizeof(struct aac_fib_context);
183                 /*
184                  *      Yes yes, I know this could be an index, but we have a
185                  * better guarantee of uniqueness for the locked loop below.
186                  * Without the aid of a persistent history, this also helps
187                  * reduce the chance that the opaque context would be reused.
188                  */
189                 fibctx->unique = (u32)((ulong)fibctx & 0xFFFFFFFF);
190                 /*
191                  *      Initialize the mutex used to wait for the next AIF.
192                  */
193                 init_MUTEX_LOCKED(&fibctx->wait_sem);
194                 fibctx->wait = 0;
195                 /*
196                  *      Initialize the fibs and set the count of fibs on
197                  *      the list to 0.
198                  */
199                 fibctx->count = 0;
200                 INIT_LIST_HEAD(&fibctx->fib_list);
201                 fibctx->jiffies = jiffies/HZ;
202                 /*
203                  *      Now add this context onto the adapter's
204                  *      AdapterFibContext list.
205                  */
206                 spin_lock_irqsave(&dev->fib_lock, flags);
207                 /* Ensure that we have a unique identifier */
208                 entry = dev->fib_list.next;
209                 while (entry != &dev->fib_list) {
210                         context = list_entry(entry, struct aac_fib_context, next);
211                         if (context->unique == fibctx->unique) {
212                                 /* Not unique (32 bits) */
213                                 fibctx->unique++;
214                                 entry = dev->fib_list.next;
215                         } else {
216                                 entry = entry->next;
217                         }
218                 }
219                 list_add_tail(&fibctx->next, &dev->fib_list);
220                 spin_unlock_irqrestore(&dev->fib_lock, flags);
221                 if (copy_to_user(arg, &fibctx->unique,
222                                                 sizeof(fibctx->unique))) {
223                         status = -EFAULT;
224                 } else {
225                         status = 0;
226                 }
227         }
228         return status;
229 }
230
231 /**
232  *      next_getadapter_fib     -       get the next fib
233  *      @dev: adapter to use
234  *      @arg: ioctl argument
235  *
236  *      This routine will get the next Fib, if available, from the AdapterFibContext
237  *      passed in from the user.
238  */
239
240 static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
241 {
242         struct fib_ioctl f;
243         struct fib *fib;
244         struct aac_fib_context *fibctx;
245         int status;
246         struct list_head * entry;
247         unsigned long flags;
248
249         if(copy_from_user((void *)&f, arg, sizeof(struct fib_ioctl)))
250                 return -EFAULT;
251         /*
252          *      Verify that the HANDLE passed in was a valid AdapterFibContext
253          *
254          *      Search the list of AdapterFibContext addresses on the adapter
255          *      to be sure this is a valid address
256          */
257         spin_lock_irqsave(&dev->fib_lock, flags);
258         entry = dev->fib_list.next;
259         fibctx = NULL;
260
261         while (entry != &dev->fib_list) {
262                 fibctx = list_entry(entry, struct aac_fib_context, next);
263                 /*
264                  *      Extract the AdapterFibContext from the Input parameters.
265                  */
266                 if (fibctx->unique == f.fibctx) { /* We found a winner */
267                         break;
268                 }
269                 entry = entry->next;
270                 fibctx = NULL;
271         }
272         if (!fibctx) {
273                 spin_unlock_irqrestore(&dev->fib_lock, flags);
274                 dprintk ((KERN_INFO "Fib Context not found\n"));
275                 return -EINVAL;
276         }
277
278         if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
279                  (fibctx->size != sizeof(struct aac_fib_context))) {
280                 spin_unlock_irqrestore(&dev->fib_lock, flags);
281                 dprintk ((KERN_INFO "Fib Context corrupt?\n"));
282                 return -EINVAL;
283         }
284         status = 0;
285         /*
286          *      If there are no fibs to send back, then either wait or return
287          *      -EAGAIN
288          */
289 return_fib:
290         if (!list_empty(&fibctx->fib_list)) {
291                 /*
292                  *      Pull the next fib from the fibs
293                  */
294                 entry = fibctx->fib_list.next;
295                 list_del(entry);
296
297                 fib = list_entry(entry, struct fib, fiblink);
298                 fibctx->count--;
299                 spin_unlock_irqrestore(&dev->fib_lock, flags);
300                 if (copy_to_user(f.fib, fib->hw_fib_va, sizeof(struct hw_fib))) {
301                         kfree(fib->hw_fib_va);
302                         kfree(fib);
303                         return -EFAULT;
304                 }
305                 /*
306                  *      Free the space occupied by this copy of the fib.
307                  */
308                 kfree(fib->hw_fib_va);
309                 kfree(fib);
310                 status = 0;
311         } else {
312                 spin_unlock_irqrestore(&dev->fib_lock, flags);
313                 /* If someone killed the AIF aacraid thread, restart it */
314                 status = !dev->aif_thread;
315                 if (status && !dev->in_reset && dev->queues && dev->fsa_dev) {
316                         /* Be paranoid, be very paranoid! */
317                         kthread_stop(dev->thread);
318                         ssleep(1);
319                         dev->aif_thread = 0;
320                         dev->thread = kthread_run(aac_command_thread, dev, dev->name);
321                         ssleep(1);
322                 }
323                 if (f.wait) {
324                         if(down_interruptible(&fibctx->wait_sem) < 0) {
325                                 status = -EINTR;
326                         } else {
327                                 /* Lock again and retry */
328                                 spin_lock_irqsave(&dev->fib_lock, flags);
329                                 goto return_fib;
330                         }
331                 } else {
332                         status = -EAGAIN;
333                 }
334         }
335         fibctx->jiffies = jiffies/HZ;
336         return status;
337 }
338
339 int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx)
340 {
341         struct fib *fib;
342
343         /*
344          *      First free any FIBs that have not been consumed.
345          */
346         while (!list_empty(&fibctx->fib_list)) {
347                 struct list_head * entry;
348                 /*
349                  *      Pull the next fib from the fibs
350                  */
351                 entry = fibctx->fib_list.next;
352                 list_del(entry);
353                 fib = list_entry(entry, struct fib, fiblink);
354                 fibctx->count--;
355                 /*
356                  *      Free the space occupied by this copy of the fib.
357                  */
358                 kfree(fib->hw_fib_va);
359                 kfree(fib);
360         }
361         /*
362          *      Remove the Context from the AdapterFibContext List
363          */
364         list_del(&fibctx->next);
365         /*
366          *      Invalidate context
367          */
368         fibctx->type = 0;
369         /*
370          *      Free the space occupied by the Context
371          */
372         kfree(fibctx);
373         return 0;
374 }
375
376 /**
377  *      close_getadapter_fib    -       close down user fib context
378  *      @dev: adapter
379  *      @arg: ioctl arguments
380  *
381  *      This routine will close down the fibctx passed in from the user.
382  */
383
384 static int close_getadapter_fib(struct aac_dev * dev, void __user *arg)
385 {
386         struct aac_fib_context *fibctx;
387         int status;
388         unsigned long flags;
389         struct list_head * entry;
390
391         /*
392          *      Verify that the HANDLE passed in was a valid AdapterFibContext
393          *
394          *      Search the list of AdapterFibContext addresses on the adapter
395          *      to be sure this is a valid address
396          */
397
398         entry = dev->fib_list.next;
399         fibctx = NULL;
400
401         while(entry != &dev->fib_list) {
402                 fibctx = list_entry(entry, struct aac_fib_context, next);
403                 /*
404                  *      Extract the fibctx from the input parameters
405                  */
406                 if (fibctx->unique == (u32)(uintptr_t)arg) /* We found a winner */
407                         break;
408                 entry = entry->next;
409                 fibctx = NULL;
410         }
411
412         if (!fibctx)
413                 return 0; /* Already gone */
414
415         if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
416                  (fibctx->size != sizeof(struct aac_fib_context)))
417                 return -EINVAL;
418         spin_lock_irqsave(&dev->fib_lock, flags);
419         status = aac_close_fib_context(dev, fibctx);
420         spin_unlock_irqrestore(&dev->fib_lock, flags);
421         return status;
422 }
423
424 /**
425  *      check_revision  -       close down user fib context
426  *      @dev: adapter
427  *      @arg: ioctl arguments
428  *
429  *      This routine returns the driver version.
430  *      Under Linux, there have been no version incompatibilities, so this is
431  *      simple!
432  */
433
434 static int check_revision(struct aac_dev *dev, void __user *arg)
435 {
436         struct revision response;
437         char *driver_version = aac_driver_version;
438         u32 version;
439
440         response.compat = 1;
441         version = (simple_strtol(driver_version,
442                                 &driver_version, 10) << 24) | 0x00000400;
443         version += simple_strtol(driver_version + 1, &driver_version, 10) << 16;
444         version += simple_strtol(driver_version + 1, NULL, 10);
445         response.version = cpu_to_le32(version);
446 #       ifdef AAC_DRIVER_BUILD
447                 response.build = cpu_to_le32(AAC_DRIVER_BUILD);
448 #       else
449                 response.build = cpu_to_le32(9999);
450 #       endif
451
452         if (copy_to_user(arg, &response, sizeof(response)))
453                 return -EFAULT;
454         return 0;
455 }
456
457
458 /**
459  *
460  * aac_send_raw_scb
461  *
462  */
463
464 static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
465 {
466         struct fib* srbfib;
467         int status;
468         struct aac_srb *srbcmd = NULL;
469         struct user_aac_srb *user_srbcmd = NULL;
470         struct user_aac_srb __user *user_srb = arg;
471         struct aac_srb_reply __user *user_reply;
472         struct aac_srb_reply* reply;
473         u32 fibsize = 0;
474         u32 flags = 0;
475         s32 rcode = 0;
476         u32 data_dir;
477         void __user *sg_user[32];
478         void *sg_list[32];
479         u32 sg_indx = 0;
480         u32 byte_count = 0;
481         u32 actual_fibsize64, actual_fibsize = 0;
482         int i;
483
484
485         if (dev->in_reset) {
486                 dprintk((KERN_DEBUG"aacraid: send raw srb -EBUSY\n"));
487                 return -EBUSY;
488         }
489         if (!capable(CAP_SYS_ADMIN)){
490                 dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n"));
491                 return -EPERM;
492         }
493         /*
494          *      Allocate and initialize a Fib then setup a SRB command
495          */
496         if (!(srbfib = aac_fib_alloc(dev))) {
497                 return -ENOMEM;
498         }
499         aac_fib_init(srbfib);
500
501         srbcmd = (struct aac_srb*) fib_data(srbfib);
502
503         memset(sg_list, 0, sizeof(sg_list)); /* cleanup may take issue */
504         if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){
505                 dprintk((KERN_DEBUG"aacraid: Could not copy data size from user\n"));
506                 rcode = -EFAULT;
507                 goto cleanup;
508         }
509
510         if (fibsize > (dev->max_fib_size - sizeof(struct aac_fibhdr))) {
511                 rcode = -EINVAL;
512                 goto cleanup;
513         }
514
515         user_srbcmd = kmalloc(fibsize, GFP_KERNEL);
516         if (!user_srbcmd) {
517                 dprintk((KERN_DEBUG"aacraid: Could not make a copy of the srb\n"));
518                 rcode = -ENOMEM;
519                 goto cleanup;
520         }
521         if(copy_from_user(user_srbcmd, user_srb,fibsize)){
522                 dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n"));
523                 rcode = -EFAULT;
524                 goto cleanup;
525         }
526
527         user_reply = arg+fibsize;
528
529         flags = user_srbcmd->flags; /* from user in cpu order */
530         // Fix up srb for endian and force some values
531
532         srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);       // Force this
533         srbcmd->channel  = cpu_to_le32(user_srbcmd->channel);
534         srbcmd->id       = cpu_to_le32(user_srbcmd->id);
535         srbcmd->lun      = cpu_to_le32(user_srbcmd->lun);
536         srbcmd->timeout  = cpu_to_le32(user_srbcmd->timeout);
537         srbcmd->flags    = cpu_to_le32(flags);
538         srbcmd->retry_limit = 0; // Obsolete parameter
539         srbcmd->cdb_size = cpu_to_le32(user_srbcmd->cdb_size);
540         memcpy(srbcmd->cdb, user_srbcmd->cdb, sizeof(srbcmd->cdb));
541
542         switch (flags & (SRB_DataIn | SRB_DataOut)) {
543         case SRB_DataOut:
544                 data_dir = DMA_TO_DEVICE;
545                 break;
546         case (SRB_DataIn | SRB_DataOut):
547                 data_dir = DMA_BIDIRECTIONAL;
548                 break;
549         case SRB_DataIn:
550                 data_dir = DMA_FROM_DEVICE;
551                 break;
552         default:
553                 data_dir = DMA_NONE;
554         }
555         if (user_srbcmd->sg.count > ARRAY_SIZE(sg_list)) {
556                 dprintk((KERN_DEBUG"aacraid: too many sg entries %d\n",
557                   le32_to_cpu(srbcmd->sg.count)));
558                 rcode = -EINVAL;
559                 goto cleanup;
560         }
561         actual_fibsize = sizeof(struct aac_srb) - sizeof(struct sgentry) +
562                 ((user_srbcmd->sg.count & 0xff) * sizeof(struct sgentry));
563         actual_fibsize64 = actual_fibsize + (user_srbcmd->sg.count & 0xff) *
564           (sizeof(struct sgentry64) - sizeof(struct sgentry));
565         /* User made a mistake - should not continue */
566         if ((actual_fibsize != fibsize) && (actual_fibsize64 != fibsize)) {
567                 dprintk((KERN_DEBUG"aacraid: Bad Size specified in "
568                   "Raw SRB command calculated fibsize=%lu;%lu "
569                   "user_srbcmd->sg.count=%d aac_srb=%lu sgentry=%lu;%lu "
570                   "issued fibsize=%d\n",
571                   actual_fibsize, actual_fibsize64, user_srbcmd->sg.count,
572                   sizeof(struct aac_srb), sizeof(struct sgentry),
573                   sizeof(struct sgentry64), fibsize));
574                 rcode = -EINVAL;
575                 goto cleanup;
576         }
577         if ((data_dir == DMA_NONE) && user_srbcmd->sg.count) {
578                 dprintk((KERN_DEBUG"aacraid: SG with no direction specified in Raw SRB command\n"));
579                 rcode = -EINVAL;
580                 goto cleanup;
581         }
582         byte_count = 0;
583         if (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64) {
584                 struct user_sgmap64* upsg = (struct user_sgmap64*)&user_srbcmd->sg;
585                 struct sgmap64* psg = (struct sgmap64*)&srbcmd->sg;
586
587                 /*
588                  * This should also catch if user used the 32 bit sgmap
589                  */
590                 if (actual_fibsize64 == fibsize) {
591                         actual_fibsize = actual_fibsize64;
592                         for (i = 0; i < upsg->count; i++) {
593                                 u64 addr;
594                                 void* p;
595                                 if (upsg->sg[i].count >
596                                     (dev->adapter_info.options &
597                                      AAC_OPT_NEW_COMM) ?
598                                       (dev->scsi_host_ptr->max_sectors << 9) :
599                                       65536) {
600                                         rcode = -EINVAL;
601                                         goto cleanup;
602                                 }
603                                 /* Does this really need to be GFP_DMA? */
604                                 p = kmalloc(upsg->sg[i].count,GFP_KERNEL|__GFP_DMA);
605                                 if(!p) {
606                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
607                                           upsg->sg[i].count,i,upsg->count));
608                                         rcode = -ENOMEM;
609                                         goto cleanup;
610                                 }
611                                 addr = (u64)upsg->sg[i].addr[0];
612                                 addr += ((u64)upsg->sg[i].addr[1]) << 32;
613                                 sg_user[i] = (void __user *)(uintptr_t)addr;
614                                 sg_list[i] = p; // save so we can clean up later
615                                 sg_indx = i;
616
617                                 if (flags & SRB_DataOut) {
618                                         if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
619                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
620                                                 rcode = -EFAULT;
621                                                 goto cleanup;
622                                         }
623                                 }
624                                 addr = pci_map_single(dev->pdev, p, upsg->sg[i].count, data_dir);
625
626                                 psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
627                                 psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
628                                 byte_count += upsg->sg[i].count;
629                                 psg->sg[i].count = cpu_to_le32(upsg->sg[i].count);
630                         }
631                 } else {
632                         struct user_sgmap* usg;
633                         usg = kmalloc(actual_fibsize - sizeof(struct aac_srb)
634                           + sizeof(struct sgmap), GFP_KERNEL);
635                         if (!usg) {
636                                 dprintk((KERN_DEBUG"aacraid: Allocation error in Raw SRB command\n"));
637                                 rcode = -ENOMEM;
638                                 goto cleanup;
639                         }
640                         memcpy (usg, upsg, actual_fibsize - sizeof(struct aac_srb)
641                           + sizeof(struct sgmap));
642                         actual_fibsize = actual_fibsize64;
643
644                         for (i = 0; i < usg->count; i++) {
645                                 u64 addr;
646                                 void* p;
647                                 if (usg->sg[i].count >
648                                     (dev->adapter_info.options &
649                                      AAC_OPT_NEW_COMM) ?
650                                       (dev->scsi_host_ptr->max_sectors << 9) :
651                                       65536) {
652                                         rcode = -EINVAL;
653                                         goto cleanup;
654                                 }
655                                 /* Does this really need to be GFP_DMA? */
656                                 p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
657                                 if(!p) {
658                                         kfree (usg);
659                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
660                                           usg->sg[i].count,i,usg->count));
661                                         rcode = -ENOMEM;
662                                         goto cleanup;
663                                 }
664                                 sg_user[i] = (void __user *)(uintptr_t)usg->sg[i].addr;
665                                 sg_list[i] = p; // save so we can clean up later
666                                 sg_indx = i;
667
668                                 if (flags & SRB_DataOut) {
669                                         if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
670                                                 kfree (usg);
671                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
672                                                 rcode = -EFAULT;
673                                                 goto cleanup;
674                                         }
675                                 }
676                                 addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir);
677
678                                 psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
679                                 psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
680                                 byte_count += usg->sg[i].count;
681                                 psg->sg[i].count = cpu_to_le32(usg->sg[i].count);
682                         }
683                         kfree (usg);
684                 }
685                 srbcmd->count = cpu_to_le32(byte_count);
686                 psg->count = cpu_to_le32(sg_indx+1);
687                 status = aac_fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,NULL,NULL);
688         } else {
689                 struct user_sgmap* upsg = &user_srbcmd->sg;
690                 struct sgmap* psg = &srbcmd->sg;
691
692                 if (actual_fibsize64 == fibsize) {
693                         struct user_sgmap64* usg = (struct user_sgmap64 *)upsg;
694                         for (i = 0; i < upsg->count; i++) {
695                                 uintptr_t addr;
696                                 void* p;
697                                 if (usg->sg[i].count >
698                                     (dev->adapter_info.options &
699                                      AAC_OPT_NEW_COMM) ?
700                                       (dev->scsi_host_ptr->max_sectors << 9) :
701                                       65536) {
702                                         rcode = -EINVAL;
703                                         goto cleanup;
704                                 }
705                                 /* Does this really need to be GFP_DMA? */
706                                 p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
707                                 if(!p) {
708                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
709                                           usg->sg[i].count,i,usg->count));
710                                         rcode = -ENOMEM;
711                                         goto cleanup;
712                                 }
713                                 addr = (u64)usg->sg[i].addr[0];
714                                 addr += ((u64)usg->sg[i].addr[1]) << 32;
715                                 sg_user[i] = (void __user *)addr;
716                                 sg_list[i] = p; // save so we can clean up later
717                                 sg_indx = i;
718
719                                 if (flags & SRB_DataOut) {
720                                         if(copy_from_user(p,sg_user[i],usg->sg[i].count)){
721                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
722                                                 rcode = -EFAULT;
723                                                 goto cleanup;
724                                         }
725                                 }
726                                 addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir);
727
728                                 psg->sg[i].addr = cpu_to_le32(addr & 0xffffffff);
729                                 byte_count += usg->sg[i].count;
730                                 psg->sg[i].count = cpu_to_le32(usg->sg[i].count);
731                         }
732                 } else {
733                         for (i = 0; i < upsg->count; i++) {
734                                 dma_addr_t addr;
735                                 void* p;
736                                 if (upsg->sg[i].count >
737                                     (dev->adapter_info.options &
738                                      AAC_OPT_NEW_COMM) ?
739                                       (dev->scsi_host_ptr->max_sectors << 9) :
740                                       65536) {
741                                         rcode = -EINVAL;
742                                         goto cleanup;
743                                 }
744                                 p = kmalloc(upsg->sg[i].count, GFP_KERNEL);
745                                 if (!p) {
746                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
747                                           upsg->sg[i].count, i, upsg->count));
748                                         rcode = -ENOMEM;
749                                         goto cleanup;
750                                 }
751                                 sg_user[i] = (void __user *)(uintptr_t)upsg->sg[i].addr;
752                                 sg_list[i] = p; // save so we can clean up later
753                                 sg_indx = i;
754
755                                 if (flags & SRB_DataOut) {
756                                         if(copy_from_user(p, sg_user[i],
757                                                         upsg->sg[i].count)) {
758                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
759                                                 rcode = -EFAULT;
760                                                 goto cleanup;
761                                         }
762                                 }
763                                 addr = pci_map_single(dev->pdev, p,
764                                         upsg->sg[i].count, data_dir);
765
766                                 psg->sg[i].addr = cpu_to_le32(addr);
767                                 byte_count += upsg->sg[i].count;
768                                 psg->sg[i].count = cpu_to_le32(upsg->sg[i].count);
769                         }
770                 }
771                 srbcmd->count = cpu_to_le32(byte_count);
772                 psg->count = cpu_to_le32(sg_indx+1);
773                 status = aac_fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, NULL, NULL);
774         }
775         if (status == -EINTR) {
776                 rcode = -EINTR;
777                 goto cleanup;
778         }
779
780         if (status != 0){
781                 dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n"));
782                 rcode = -ENXIO;
783                 goto cleanup;
784         }
785
786         if (flags & SRB_DataIn) {
787                 for(i = 0 ; i <= sg_indx; i++){
788                         byte_count = le32_to_cpu(
789                           (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64)
790                               ? ((struct sgmap64*)&srbcmd->sg)->sg[i].count
791                               : srbcmd->sg.sg[i].count);
792                         if(copy_to_user(sg_user[i], sg_list[i], byte_count)){
793                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n"));
794                                 rcode = -EFAULT;
795                                 goto cleanup;
796
797                         }
798                 }
799         }
800
801         reply = (struct aac_srb_reply *) fib_data(srbfib);
802         if(copy_to_user(user_reply,reply,sizeof(struct aac_srb_reply))){
803                 dprintk((KERN_DEBUG"aacraid: Could not copy reply to user\n"));
804                 rcode = -EFAULT;
805                 goto cleanup;
806         }
807
808 cleanup:
809         kfree(user_srbcmd);
810         for(i=0; i <= sg_indx; i++){
811                 kfree(sg_list[i]);
812         }
813         if (rcode != -EINTR) {
814                 aac_fib_complete(srbfib);
815                 aac_fib_free(srbfib);
816         }
817
818         return rcode;
819 }
820
821 struct aac_pci_info {
822         u32 bus;
823         u32 slot;
824 };
825
826
827 static int aac_get_pci_info(struct aac_dev* dev, void __user *arg)
828 {
829         struct aac_pci_info pci_info;
830
831         pci_info.bus = dev->pdev->bus->number;
832         pci_info.slot = PCI_SLOT(dev->pdev->devfn);
833
834         if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) {
835                 dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n"));
836                 return -EFAULT;
837         }
838         return 0;
839 }
840
841
842 int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
843 {
844         int status;
845
846         /*
847          *      HBA gets first crack
848          */
849
850         status = aac_dev_ioctl(dev, cmd, arg);
851         if(status != -ENOTTY)
852                 return status;
853
854         switch (cmd) {
855         case FSACTL_MINIPORT_REV_CHECK:
856                 status = check_revision(dev, arg);
857                 break;
858         case FSACTL_SEND_LARGE_FIB:
859         case FSACTL_SENDFIB:
860                 status = ioctl_send_fib(dev, arg);
861                 break;
862         case FSACTL_OPEN_GET_ADAPTER_FIB:
863                 status = open_getadapter_fib(dev, arg);
864                 break;
865         case FSACTL_GET_NEXT_ADAPTER_FIB:
866                 status = next_getadapter_fib(dev, arg);
867                 break;
868         case FSACTL_CLOSE_GET_ADAPTER_FIB:
869                 status = close_getadapter_fib(dev, arg);
870                 break;
871         case FSACTL_SEND_RAW_SRB:
872                 status = aac_send_raw_srb(dev,arg);
873                 break;
874         case FSACTL_GET_PCI_INFO:
875                 status = aac_get_pci_info(dev,arg);
876                 break;
877         default:
878                 status = -ENOTTY;
879                 break;
880         }
881         return status;
882 }
883