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,
 322                                                   "%s", dev->name);
 323                         ssleep(1);
 324                 }
 325                 if (f.wait) {
 326                         if(down_interruptible(&fibctx->wait_sem) < 0) {
 327                                 status = -ERESTARTSYS;
 328                         } else {
 329                                 /* Lock again and retry */
 330                                 spin_lock_irqsave(&dev->fib_lock, flags);
 331                                 goto return_fib;
 332                         }
 333                 } else {
 334                         status = -EAGAIN;
 335                 }
 336         }
 337         fibctx->jiffies = jiffies/HZ;
 338         return status;
 339 }
 340
 341 int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx)
 342 {
 343         struct fib *fib;
 344
 345         /*
 346          *      First free any FIBs that have not been consumed.
 347          */
 348         while (!list_empty(&fibctx->fib_list)) {
 349                 struct list_head * entry;
 350                 /*
 351                  *      Pull the next fib from the fibs
 352                  */
 353                 entry = fibctx->fib_list.next;
 354                 list_del(entry);
 355                 fib = list_entry(entry, struct fib, fiblink);
 356                 fibctx->count--;
 357                 /*
 358                  *      Free the space occupied by this copy of the fib.
 359                  */
 360                 kfree(fib->hw_fib_va);
 361                 kfree(fib);
 362         }
 363         /*
 364          *      Remove the Context from the AdapterFibContext List
 365          */
 366         list_del(&fibctx->next);
 367         /*
 368          *      Invalidate context
 369          */
 370         fibctx->type = 0;
 371         /*
 372          *      Free the space occupied by the Context
 373          */
 374         kfree(fibctx);
 375         return 0;
 376 }
 377
 378 /**
 379  *      close_getadapter_fib    -       close down user fib context
 380  *      @dev: adapter
 381  *      @arg: ioctl arguments
 382  *
 383  *      This routine will close down the fibctx passed in from the user.
 384  */
 385
 386 static int close_getadapter_fib(struct aac_dev * dev, void __user *arg)
 387 {
 388         struct aac_fib_context *fibctx;
 389         int status;
 390         unsigned long flags;
 391         struct list_head * entry;
 392
 393         /*
 394          *      Verify that the HANDLE passed in was a valid AdapterFibContext
 395          *
 396          *      Search the list of AdapterFibContext addresses on the adapter
 397          *      to be sure this is a valid address
 398          */
 399
 400         entry = dev->fib_list.next;
 401         fibctx = NULL;
 402
 403         while(entry != &dev->fib_list) {
 404                 fibctx = list_entry(entry, struct aac_fib_context, next);
 405                 /*
 406                  *      Extract the fibctx from the input parameters
 407                  */
 408                 if (fibctx->unique == (u32)(uintptr_t)arg) /* We found a winner */
 409                         break;
 410                 entry = entry->next;
 411                 fibctx = NULL;
 412         }
 413
 414         if (!fibctx)
 415                 return 0; /* Already gone */
 416
 417         if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
 418                  (fibctx->size != sizeof(struct aac_fib_context)))
 419                 return -EINVAL;
 420         spin_lock_irqsave(&dev->fib_lock, flags);
 421         status = aac_close_fib_context(dev, fibctx);
 422         spin_unlock_irqrestore(&dev->fib_lock, flags);
 423         return status;
 424 }
 425
 426 /**
 427  *      check_revision  -       close down user fib context
 428  *      @dev: adapter
 429  *      @arg: ioctl arguments
 430  *
 431  *      This routine returns the driver version.
 432  *      Under Linux, there have been no version incompatibilities, so this is
 433  *      simple!
 434  */
 435
 436 static int check_revision(struct aac_dev *dev, void __user *arg)
 437 {
 438         struct revision response;
 439         char *driver_version = aac_driver_version;
 440         u32 version;
 441
 442         response.compat = 1;
 443         version = (simple_strtol(driver_version,
 444                                 &driver_version, 10) << 24) | 0x00000400;
 445         version += simple_strtol(driver_version + 1, &driver_version, 10) << 16;
 446         version += simple_strtol(driver_version + 1, NULL, 10);
 447         response.version = cpu_to_le32(version);
 448 #       ifdef AAC_DRIVER_BUILD
 449                 response.build = cpu_to_le32(AAC_DRIVER_BUILD);
 450 #       else
 451                 response.build = cpu_to_le32(9999);
 452 #       endif
 453
 454         if (copy_to_user(arg, &response, sizeof(response)))
 455                 return -EFAULT;
 456         return 0;
 457 }
 458
 459
 460 /**
 461  *
 462  * aac_send_raw_scb
 463  *
 464  */
 465
 466 static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 467 {
 468         struct fib* srbfib;
 469         int status;
 470         struct aac_srb *srbcmd = NULL;
 471         struct user_aac_srb *user_srbcmd = NULL;
 472         struct user_aac_srb __user *user_srb = arg;
 473         struct aac_srb_reply __user *user_reply;
 474         struct aac_srb_reply* reply;
 475         u32 fibsize = 0;
 476         u32 flags = 0;
 477         s32 rcode = 0;
 478         u32 data_dir;
 479         void __user *sg_user[32];
 480         void *sg_list[32];
 481         u32 sg_indx = 0;
 482         u32 byte_count = 0;
 483         u32 actual_fibsize64, actual_fibsize = 0;
 484         int i;
 485
 486
 487         if (dev->in_reset) {
 488                 dprintk((KERN_DEBUG"aacraid: send raw srb -EBUSY\n"));
 489                 return -EBUSY;
 490         }
 491         if (!capable(CAP_SYS_ADMIN)){
 492                 dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n"));
 493                 return -EPERM;
 494         }
 495         /*
 496          *      Allocate and initialize a Fib then setup a SRB command
 497          */
 498         if (!(srbfib = aac_fib_alloc(dev))) {
 499                 return -ENOMEM;
 500         }
 501         aac_fib_init(srbfib);
 502         /* raw_srb FIB is not FastResponseCapable */
 503         srbfib->hw_fib_va->header.XferState &= ~cpu_to_le32(FastResponseCapable);
 504
 505         srbcmd = (struct aac_srb*) fib_data(srbfib);
 506
 507         memset(sg_list, 0, sizeof(sg_list)); /* cleanup may take issue */
 508         if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){
 509                 dprintk((KERN_DEBUG"aacraid: Could not copy data size from user\n"));
 510                 rcode = -EFAULT;
 511                 goto cleanup;
 512         }
 513
 514         if ((fibsize < (sizeof(struct user_aac_srb) - sizeof(struct user_sgentry))) ||
 515             (fibsize > (dev->max_fib_size - sizeof(struct aac_fibhdr)))) {
 516                 rcode = -EINVAL;
 517                 goto cleanup;
 518         }
 519
 520         user_srbcmd = kmalloc(fibsize, GFP_KERNEL);
 521         if (!user_srbcmd) {
 522                 dprintk((KERN_DEBUG"aacraid: Could not make a copy of the srb\n"));
 523                 rcode = -ENOMEM;
 524                 goto cleanup;
 525         }
 526         if(copy_from_user(user_srbcmd, user_srb,fibsize)){
 527                 dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n"));
 528                 rcode = -EFAULT;
 529                 goto cleanup;
 530         }
 531
 532         user_reply = arg+fibsize;
 533
 534         flags = user_srbcmd->flags; /* from user in cpu order */
 535         // Fix up srb for endian and force some values
 536
 537         srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);       // Force this
 538         srbcmd->channel  = cpu_to_le32(user_srbcmd->channel);
 539         srbcmd->id       = cpu_to_le32(user_srbcmd->id);
 540         srbcmd->lun      = cpu_to_le32(user_srbcmd->lun);
 541         srbcmd->timeout  = cpu_to_le32(user_srbcmd->timeout);
 542         srbcmd->flags    = cpu_to_le32(flags);
 543         srbcmd->retry_limit = 0; // Obsolete parameter
 544         srbcmd->cdb_size = cpu_to_le32(user_srbcmd->cdb_size);
 545         memcpy(srbcmd->cdb, user_srbcmd->cdb, sizeof(srbcmd->cdb));
 546
 547         switch (flags & (SRB_DataIn | SRB_DataOut)) {
 548         case SRB_DataOut:
 549                 data_dir = DMA_TO_DEVICE;
 550                 break;
 551         case (SRB_DataIn | SRB_DataOut):
 552                 data_dir = DMA_BIDIRECTIONAL;
 553                 break;
 554         case SRB_DataIn:
 555                 data_dir = DMA_FROM_DEVICE;
 556                 break;
 557         default:
 558                 data_dir = DMA_NONE;
 559         }
 560         if (user_srbcmd->sg.count > ARRAY_SIZE(sg_list)) {
 561                 dprintk((KERN_DEBUG"aacraid: too many sg entries %d\n",
 562                   le32_to_cpu(srbcmd->sg.count)));
 563                 rcode = -EINVAL;
 564                 goto cleanup;
 565         }
 566         actual_fibsize = sizeof(struct aac_srb) - sizeof(struct sgentry) +
 567                 ((user_srbcmd->sg.count & 0xff) * sizeof(struct sgentry));
 568         actual_fibsize64 = actual_fibsize + (user_srbcmd->sg.count & 0xff) *
 569           (sizeof(struct sgentry64) - sizeof(struct sgentry));
 570         /* User made a mistake - should not continue */
 571         if ((actual_fibsize != fibsize) && (actual_fibsize64 != fibsize)) {
 572                 dprintk((KERN_DEBUG"aacraid: Bad Size specified in "
 573                   "Raw SRB command calculated fibsize=%lu;%lu "
 574                   "user_srbcmd->sg.count=%d aac_srb=%lu sgentry=%lu;%lu "
 575                   "issued fibsize=%d\n",
 576                   actual_fibsize, actual_fibsize64, user_srbcmd->sg.count,
 577                   sizeof(struct aac_srb), sizeof(struct sgentry),
 578                   sizeof(struct sgentry64), fibsize));
 579                 rcode = -EINVAL;
 580                 goto cleanup;
 581         }
 582         if ((data_dir == DMA_NONE) && user_srbcmd->sg.count) {
 583                 dprintk((KERN_DEBUG"aacraid: SG with no direction specified in Raw SRB command\n"));
 584                 rcode = -EINVAL;
 585                 goto cleanup;
 586         }
 587         byte_count = 0;
 588         if (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64) {
 589                 struct user_sgmap64* upsg = (struct user_sgmap64*)&user_srbcmd->sg;
 590                 struct sgmap64* psg = (struct sgmap64*)&srbcmd->sg;
 591
 592                 /*
 593                  * This should also catch if user used the 32 bit sgmap
 594                  */
 595                 if (actual_fibsize64 == fibsize) {
 596                         actual_fibsize = actual_fibsize64;
 597                         for (i = 0; i < upsg->count; i++) {
 598                                 u64 addr;
 599                                 void* p;
 600                                 if (upsg->sg[i].count >
 601                                     ((dev->adapter_info.options &
 602                                      AAC_OPT_NEW_COMM) ?
 603                                       (dev->scsi_host_ptr->max_sectors << 9) :
 604                                       65536)) {
 605                                         rcode = -EINVAL;
 606                                         goto cleanup;
 607                                 }
 608                                 /* Does this really need to be GFP_DMA? */
 609                                 p = kmalloc(upsg->sg[i].count,GFP_KERNEL|__GFP_DMA);
 610                                 if(!p) {
 611                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 612                                           upsg->sg[i].count,i,upsg->count));
 613                                         rcode = -ENOMEM;
 614                                         goto cleanup;
 615                                 }
 616                                 addr = (u64)upsg->sg[i].addr[0];
 617                                 addr += ((u64)upsg->sg[i].addr[1]) << 32;
 618                                 sg_user[i] = (void __user *)(uintptr_t)addr;
 619                                 sg_list[i] = p; // save so we can clean up later
 620                                 sg_indx = i;
 621
 622                                 if (flags & SRB_DataOut) {
 623                                         if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
 624                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
 625                                                 rcode = -EFAULT;
 626                                                 goto cleanup;
 627                                         }
 628                                 }
 629                                 addr = pci_map_single(dev->pdev, p, upsg->sg[i].count, data_dir);
 630
 631                                 psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
 632                                 psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
 633                                 byte_count += upsg->sg[i].count;
 634                                 psg->sg[i].count = cpu_to_le32(upsg->sg[i].count);
 635                         }
 636                 } else {
 637                         struct user_sgmap* usg;
 638                         usg = kmemdup(upsg,
 639                                       actual_fibsize - sizeof(struct aac_srb)
 640                                       + sizeof(struct sgmap), GFP_KERNEL);
 641                         if (!usg) {
 642                                 dprintk((KERN_DEBUG"aacraid: Allocation error in Raw SRB command\n"));
 643                                 rcode = -ENOMEM;
 644                                 goto cleanup;
 645                         }
 646                         actual_fibsize = actual_fibsize64;
 647
 648                         for (i = 0; i < usg->count; i++) {
 649                                 u64 addr;
 650                                 void* p;
 651                                 if (usg->sg[i].count >
 652                                     ((dev->adapter_info.options &
 653                                      AAC_OPT_NEW_COMM) ?
 654                                       (dev->scsi_host_ptr->max_sectors << 9) :
 655                                       65536)) {
 656                                         kfree(usg);
 657                                         rcode = -EINVAL;
 658                                         goto cleanup;
 659                                 }
 660                                 /* Does this really need to be GFP_DMA? */
 661                                 p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
 662                                 if(!p) {
 663                                         dprintk((KERN_DEBUG "aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 664                                           usg->sg[i].count,i,usg->count));
 665                                         kfree(usg);
 666                                         rcode = -ENOMEM;
 667                                         goto cleanup;
 668                                 }
 669                                 sg_user[i] = (void __user *)(uintptr_t)usg->sg[i].addr;
 670                                 sg_list[i] = p; // save so we can clean up later
 671                                 sg_indx = i;
 672
 673                                 if (flags & SRB_DataOut) {
 674                                         if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
 675                                                 kfree (usg);
 676                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
 677                                                 rcode = -EFAULT;
 678                                                 goto cleanup;
 679                                         }
 680                                 }
 681                                 addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir);
 682
 683                                 psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
 684                                 psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
 685                                 byte_count += usg->sg[i].count;
 686                                 psg->sg[i].count = cpu_to_le32(usg->sg[i].count);
 687                         }
 688                         kfree (usg);
 689                 }
 690                 srbcmd->count = cpu_to_le32(byte_count);
 691                 if (user_srbcmd->sg.count)
 692                         psg->count = cpu_to_le32(sg_indx+1);
 693                 else
 694                         psg->count = 0;
 695                 status = aac_fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,NULL,NULL);
 696         } else {
 697                 struct user_sgmap* upsg = &user_srbcmd->sg;
 698                 struct sgmap* psg = &srbcmd->sg;
 699
 700                 if (actual_fibsize64 == fibsize) {
 701                         struct user_sgmap64* usg = (struct user_sgmap64 *)upsg;
 702                         for (i = 0; i < upsg->count; i++) {
 703                                 uintptr_t addr;
 704                                 void* p;
 705                                 if (usg->sg[i].count >
 706                                     ((dev->adapter_info.options &
 707                                      AAC_OPT_NEW_COMM) ?
 708                                       (dev->scsi_host_ptr->max_sectors << 9) :
 709                                       65536)) {
 710                                         rcode = -EINVAL;
 711                                         goto cleanup;
 712                                 }
 713                                 /* Does this really need to be GFP_DMA? */
 714                                 p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
 715                                 if(!p) {
 716                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 717                                           usg->sg[i].count,i,usg->count));
 718                                         rcode = -ENOMEM;
 719                                         goto cleanup;
 720                                 }
 721                                 addr = (u64)usg->sg[i].addr[0];
 722                                 addr += ((u64)usg->sg[i].addr[1]) << 32;
 723                                 sg_user[i] = (void __user *)addr;
 724                                 sg_list[i] = p; // save so we can clean up later
 725                                 sg_indx = i;
 726
 727                                 if (flags & SRB_DataOut) {
 728                                         if(copy_from_user(p,sg_user[i],usg->sg[i].count)){
 729                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
 730                                                 rcode = -EFAULT;
 731                                                 goto cleanup;
 732                                         }
 733                                 }
 734                                 addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir);
 735
 736                                 psg->sg[i].addr = cpu_to_le32(addr & 0xffffffff);
 737                                 byte_count += usg->sg[i].count;
 738                                 psg->sg[i].count = cpu_to_le32(usg->sg[i].count);
 739                         }
 740                 } else {
 741                         for (i = 0; i < upsg->count; i++) {
 742                                 dma_addr_t addr;
 743                                 void* p;
 744                                 if (upsg->sg[i].count >
 745                                     ((dev->adapter_info.options &
 746                                      AAC_OPT_NEW_COMM) ?
 747                                       (dev->scsi_host_ptr->max_sectors << 9) :
 748                                       65536)) {
 749                                         rcode = -EINVAL;
 750                                         goto cleanup;
 751                                 }
 752                                 p = kmalloc(upsg->sg[i].count, GFP_KERNEL);
 753                                 if (!p) {
 754                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 755                                           upsg->sg[i].count, i, upsg->count));
 756                                         rcode = -ENOMEM;
 757                                         goto cleanup;
 758                                 }
 759                                 sg_user[i] = (void __user *)(uintptr_t)upsg->sg[i].addr;
 760                                 sg_list[i] = p; // save so we can clean up later
 761                                 sg_indx = i;
 762
 763                                 if (flags & SRB_DataOut) {
 764                                         if(copy_from_user(p, sg_user[i],
 765                                                         upsg->sg[i].count)) {
 766                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
 767                                                 rcode = -EFAULT;
 768                                                 goto cleanup;
 769                                         }
 770                                 }
 771                                 addr = pci_map_single(dev->pdev, p,
 772                                         upsg->sg[i].count, data_dir);
 773
 774                                 psg->sg[i].addr = cpu_to_le32(addr);
 775                                 byte_count += upsg->sg[i].count;
 776                                 psg->sg[i].count = cpu_to_le32(upsg->sg[i].count);
 777                         }
 778                 }
 779                 srbcmd->count = cpu_to_le32(byte_count);
 780                 if (user_srbcmd->sg.count)
 781                         psg->count = cpu_to_le32(sg_indx+1);
 782                 else
 783                         psg->count = 0;
 784                 status = aac_fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, NULL, NULL);
 785         }
 786         if (status == -ERESTARTSYS) {
 787                 rcode = -ERESTARTSYS;
 788                 goto cleanup;
 789         }
 790
 791         if (status != 0){
 792                 dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n"));
 793                 rcode = -ENXIO;
 794                 goto cleanup;
 795         }
 796
 797         if (flags & SRB_DataIn) {
 798                 for(i = 0 ; i <= sg_indx; i++){
 799                         byte_count = le32_to_cpu(
 800                           (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64)
 801                               ? ((struct sgmap64*)&srbcmd->sg)->sg[i].count
 802                               : srbcmd->sg.sg[i].count);
 803                         if(copy_to_user(sg_user[i], sg_list[i], byte_count)){
 804                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n"));
 805                                 rcode = -EFAULT;
 806                                 goto cleanup;
 807
 808                         }
 809                 }
 810         }
 811
 812         reply = (struct aac_srb_reply *) fib_data(srbfib);
 813         if(copy_to_user(user_reply,reply,sizeof(struct aac_srb_reply))){
 814                 dprintk((KERN_DEBUG"aacraid: Could not copy reply to user\n"));
 815                 rcode = -EFAULT;
 816                 goto cleanup;
 817         }
 818
 819 cleanup:
 820         kfree(user_srbcmd);
 821         for(i=0; i <= sg_indx; i++){
 822                 kfree(sg_list[i]);
 823         }
 824         if (rcode != -ERESTARTSYS) {
 825                 aac_fib_complete(srbfib);
 826                 aac_fib_free(srbfib);
 827         }
 828
 829         return rcode;
 830 }
 831
 832 struct aac_pci_info {
 833         u32 bus;
 834         u32 slot;
 835 };
 836
 837
 838 static int aac_get_pci_info(struct aac_dev* dev, void __user *arg)
 839 {
 840         struct aac_pci_info pci_info;
 841
 842         pci_info.bus = dev->pdev->bus->number;
 843         pci_info.slot = PCI_SLOT(dev->pdev->devfn);
 844
 845         if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) {
 846                 dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n"));
 847                 return -EFAULT;
 848         }
 849         return 0;
 850 }
 851
 852
 853 int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
 854 {
 855         int status;
 856
 857         mutex_lock(&dev->ioctl_mutex);
 858
 859         if (dev->adapter_shutdown) {
 860                 status = -EACCES;
 861                 goto cleanup;
 862         }
 863
 864         /*
 865          *      HBA gets first crack
 866          */
 867
 868         status = aac_dev_ioctl(dev, cmd, arg);
 869         if (status != -ENOTTY)
 870                 goto cleanup;
 871
 872         switch (cmd) {
 873         case FSACTL_MINIPORT_REV_CHECK:
 874                 status = check_revision(dev, arg);
 875                 break;
 876         case FSACTL_SEND_LARGE_FIB:
 877         case FSACTL_SENDFIB:
 878                 status = ioctl_send_fib(dev, arg);
 879                 break;
 880         case FSACTL_OPEN_GET_ADAPTER_FIB:
 881                 status = open_getadapter_fib(dev, arg);
 882                 break;
 883         case FSACTL_GET_NEXT_ADAPTER_FIB:
 884                 status = next_getadapter_fib(dev, arg);
 885                 break;
 886         case FSACTL_CLOSE_GET_ADAPTER_FIB:
 887                 status = close_getadapter_fib(dev, arg);
 888                 break;
 889         case FSACTL_SEND_RAW_SRB:
 890                 status = aac_send_raw_srb(dev,arg);
 891                 break;
 892         case FSACTL_GET_PCI_INFO:
 893                 status = aac_get_pci_info(dev,arg);
 894                 break;
 895         default:
 896                 status = -ENOTTY;
 897                 break;
 898         }
 899
 900 cleanup:
 901         mutex_unlock(&dev->ioctl_mutex);
 902
 903         return status;
 904 }
 905