drivers/scsi/aacraid/commctrl.c

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