git.oblomov.eu Git - linux-2.6/blob - 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