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. <alan@redhat.com>
   4  *
   5  * based on the old aacraid driver that is..
   6  * Adaptec aacraid device driver for Linux.
   7  *
   8  * Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com)
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2, or (at your option)
  13  * any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; see the file COPYING.  If not, write to
  22  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  * Module Name:
  25  *  commctrl.c
  26  *
  27  * Abstract: Contains all routines for control of the AFA comm layer
  28  *
  29  */
  30
  31 #include <linux/kernel.h>
  32 #include <linux/init.h>
  33 #include <linux/types.h>
  34 #include <linux/pci.h>
  35 #include <linux/spinlock.h>
  36 #include <linux/slab.h>
  37 #include <linux/completion.h>
  38 #include <linux/dma-mapping.h>
  39 #include <linux/blkdev.h>
  40 #include <linux/delay.h> /* ssleep prototype */
  41 #include <linux/kthread.h>
  42 #include <linux/semaphore.h>
  43 #include <asm/uaccess.h>
  44
  45 #include "aacraid.h"
  46
  47 /**
  48  *      ioctl_send_fib  -       send a FIB from userspace
  49  *      @dev:   adapter is being processed
  50  *      @arg:   arguments to the ioctl call
  51  *
  52  *      This routine sends a fib to the adapter on behalf of a user level
  53  *      program.
  54  */
  55 # define AAC_DEBUG_PREAMBLE     KERN_INFO
  56 # define AAC_DEBUG_POSTAMBLE
  57
  58 static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
  59 {
  60         struct hw_fib * kfib;
  61         struct fib *fibptr;
  62         struct hw_fib * hw_fib = (struct hw_fib *)0;
  63         dma_addr_t hw_fib_pa = (dma_addr_t)0LL;
  64         unsigned size;
  65         int retval;
  66
  67         if (dev->in_reset) {
  68                 return -EBUSY;
  69         }
  70         fibptr = aac_fib_alloc(dev);
  71         if(fibptr == NULL) {
  72                 return -ENOMEM;
  73         }
  74
  75         kfib = fibptr->hw_fib_va;
  76         /*
  77          *      First copy in the header so that we can check the size field.
  78          */
  79         if (copy_from_user((void *)kfib, arg, sizeof(struct aac_fibhdr))) {
  80                 aac_fib_free(fibptr);
  81                 return -EFAULT;
  82         }
  83         /*
  84          *      Since we copy based on the fib header size, make sure that we
  85          *      will not overrun the buffer when we copy the memory. Return
  86          *      an error if we would.
  87          */
  88         size = le16_to_cpu(kfib->header.Size) + sizeof(struct aac_fibhdr);
  89         if (size < le16_to_cpu(kfib->header.SenderSize))
  90                 size = le16_to_cpu(kfib->header.SenderSize);
  91         if (size > dev->max_fib_size) {
  92                 if (size > 2048) {
  93                         retval = -EINVAL;
  94                         goto cleanup;
  95                 }
  96                 /* Highjack the hw_fib */
  97                 hw_fib = fibptr->hw_fib_va;
  98                 hw_fib_pa = fibptr->hw_fib_pa;
  99                 fibptr->hw_fib_va = kfib = pci_alloc_consistent(dev->pdev, size, &fibptr->hw_fib_pa);
 100                 memset(((char *)kfib) + dev->max_fib_size, 0, size - dev->max_fib_size);
 101                 memcpy(kfib, hw_fib, dev->max_fib_size);
 102         }
 103
 104         if (copy_from_user(kfib, arg, size)) {
 105                 retval = -EFAULT;
 106                 goto cleanup;
 107         }
 108
 109         if (kfib->header.Command == cpu_to_le16(TakeABreakPt)) {
 110                 aac_adapter_interrupt(dev);
 111                 /*
 112                  * Since we didn't really send a fib, zero out the state to allow
 113                  * cleanup code not to assert.
 114                  */
 115                 kfib->header.XferState = 0;
 116         } else {
 117                 retval = aac_fib_send(le16_to_cpu(kfib->header.Command), fibptr,
 118                                 le16_to_cpu(kfib->header.Size) , FsaNormal,
 119                                 1, 1, NULL, NULL);
 120                 if (retval) {
 121                         goto cleanup;
 122                 }
 123                 if (aac_fib_complete(fibptr) != 0) {
 124                         retval = -EINVAL;
 125                         goto cleanup;
 126                 }
 127         }
 128         /*
 129          *      Make sure that the size returned by the adapter (which includes
 130          *      the header) is less than or equal to the size of a fib, so we
 131          *      don't corrupt application data. Then copy that size to the user
 132          *      buffer. (Don't try to add the header information again, since it
 133          *      was already included by the adapter.)
 134          */
 135
 136         retval = 0;
 137         if (copy_to_user(arg, (void *)kfib, size))
 138                 retval = -EFAULT;
 139 cleanup:
 140         if (hw_fib) {
 141                 pci_free_consistent(dev->pdev, size, kfib, fibptr->hw_fib_pa);
 142                 fibptr->hw_fib_pa = hw_fib_pa;
 143                 fibptr->hw_fib_va = hw_fib;
 144         }
 145         if (retval != -EINTR)
 146                 aac_fib_free(fibptr);
 147         return retval;
 148 }
 149
 150 /**
 151  *      open_getadapter_fib     -       Get the next fib
 152  *
 153  *      This routine will get the next Fib, if available, from the AdapterFibContext
 154  *      passed in from the user.
 155  */
 156
 157 static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
 158 {
 159         struct aac_fib_context * fibctx;
 160         int status;
 161
 162         fibctx = kmalloc(sizeof(struct aac_fib_context), GFP_KERNEL);
 163         if (fibctx == NULL) {
 164                 status = -ENOMEM;
 165         } else {
 166                 unsigned long flags;
 167                 struct list_head * entry;
 168                 struct aac_fib_context * context;
 169
 170                 fibctx->type = FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT;
 171                 fibctx->size = sizeof(struct aac_fib_context);
 172                 /*
 173                  *      Yes yes, I know this could be an index, but we have a
 174                  * better guarantee of uniqueness for the locked loop below.
 175                  * Without the aid of a persistent history, this also helps
 176                  * reduce the chance that the opaque context would be reused.
 177                  */
 178                 fibctx->unique = (u32)((ulong)fibctx & 0xFFFFFFFF);
 179                 /*
 180                  *      Initialize the mutex used to wait for the next AIF.
 181                  */
 182                 init_MUTEX_LOCKED(&fibctx->wait_sem);
 183                 fibctx->wait = 0;
 184                 /*
 185                  *      Initialize the fibs and set the count of fibs on
 186                  *      the list to 0.
 187                  */
 188                 fibctx->count = 0;
 189                 INIT_LIST_HEAD(&fibctx->fib_list);
 190                 fibctx->jiffies = jiffies/HZ;
 191                 /*
 192                  *      Now add this context onto the adapter's
 193                  *      AdapterFibContext list.
 194                  */
 195                 spin_lock_irqsave(&dev->fib_lock, flags);
 196                 /* Ensure that we have a unique identifier */
 197                 entry = dev->fib_list.next;
 198                 while (entry != &dev->fib_list) {
 199                         context = list_entry(entry, struct aac_fib_context, next);
 200                         if (context->unique == fibctx->unique) {
 201                                 /* Not unique (32 bits) */
 202                                 fibctx->unique++;
 203                                 entry = dev->fib_list.next;
 204                         } else {
 205                                 entry = entry->next;
 206                         }
 207                 }
 208                 list_add_tail(&fibctx->next, &dev->fib_list);
 209                 spin_unlock_irqrestore(&dev->fib_lock, flags);
 210                 if (copy_to_user(arg, &fibctx->unique,
 211                                                 sizeof(fibctx->unique))) {
 212                         status = -EFAULT;
 213                 } else {
 214                         status = 0;
 215                 }
 216         }
 217         return status;
 218 }
 219
 220 /**
 221  *      next_getadapter_fib     -       get the next fib
 222  *      @dev: adapter to use
 223  *      @arg: ioctl argument
 224  *
 225  *      This routine will get the next Fib, if available, from the AdapterFibContext
 226  *      passed in from the user.
 227  */
 228
 229 static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
 230 {
 231         struct fib_ioctl f;
 232         struct fib *fib;
 233         struct aac_fib_context *fibctx;
 234         int status;
 235         struct list_head * entry;
 236         unsigned long flags;
 237
 238         if(copy_from_user((void *)&f, arg, sizeof(struct fib_ioctl)))
 239                 return -EFAULT;
 240         /*
 241          *      Verify that the HANDLE passed in was a valid AdapterFibContext
 242          *
 243          *      Search the list of AdapterFibContext addresses on the adapter
 244          *      to be sure this is a valid address
 245          */
 246         spin_lock_irqsave(&dev->fib_lock, flags);
 247         entry = dev->fib_list.next;
 248         fibctx = NULL;
 249
 250         while (entry != &dev->fib_list) {
 251                 fibctx = list_entry(entry, struct aac_fib_context, next);
 252                 /*
 253                  *      Extract the AdapterFibContext from the Input parameters.
 254                  */
 255                 if (fibctx->unique == f.fibctx) { /* We found a winner */
 256                         break;
 257                 }
 258                 entry = entry->next;
 259                 fibctx = NULL;
 260         }
 261         if (!fibctx) {
 262                 spin_unlock_irqrestore(&dev->fib_lock, flags);
 263                 dprintk ((KERN_INFO "Fib Context not found\n"));
 264                 return -EINVAL;
 265         }
 266
 267         if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
 268                  (fibctx->size != sizeof(struct aac_fib_context))) {
 269                 spin_unlock_irqrestore(&dev->fib_lock, flags);
 270                 dprintk ((KERN_INFO "Fib Context corrupt?\n"));
 271                 return -EINVAL;
 272         }
 273         status = 0;
 274         /*
 275          *      If there are no fibs to send back, then either wait or return
 276          *      -EAGAIN
 277          */
 278 return_fib:
 279         if (!list_empty(&fibctx->fib_list)) {
 280                 /*
 281                  *      Pull the next fib from the fibs
 282                  */
 283                 entry = fibctx->fib_list.next;
 284                 list_del(entry);
 285
 286                 fib = list_entry(entry, struct fib, fiblink);
 287                 fibctx->count--;
 288                 spin_unlock_irqrestore(&dev->fib_lock, flags);
 289                 if (copy_to_user(f.fib, fib->hw_fib_va, sizeof(struct hw_fib))) {
 290                         kfree(fib->hw_fib_va);
 291                         kfree(fib);
 292                         return -EFAULT;
 293                 }
 294                 /*
 295                  *      Free the space occupied by this copy of the fib.
 296                  */
 297                 kfree(fib->hw_fib_va);
 298                 kfree(fib);
 299                 status = 0;
 300         } else {
 301                 spin_unlock_irqrestore(&dev->fib_lock, flags);
 302                 /* If someone killed the AIF aacraid thread, restart it */
 303                 status = !dev->aif_thread;
 304                 if (status && !dev->in_reset && dev->queues && dev->fsa_dev) {
 305                         /* Be paranoid, be very paranoid! */
 306                         kthread_stop(dev->thread);
 307                         ssleep(1);
 308                         dev->aif_thread = 0;
 309                         dev->thread = kthread_run(aac_command_thread, dev, dev->name);
 310                         ssleep(1);
 311                 }
 312                 if (f.wait) {
 313                         if(down_interruptible(&fibctx->wait_sem) < 0) {
 314                                 status = -EINTR;
 315                         } else {
 316                                 /* Lock again and retry */
 317                                 spin_lock_irqsave(&dev->fib_lock, flags);
 318                                 goto return_fib;
 319                         }
 320                 } else {
 321                         status = -EAGAIN;
 322                 }
 323         }
 324         fibctx->jiffies = jiffies/HZ;
 325         return status;
 326 }
 327
 328 int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx)
 329 {
 330         struct fib *fib;
 331
 332         /*
 333          *      First free any FIBs that have not been consumed.
 334          */
 335         while (!list_empty(&fibctx->fib_list)) {
 336                 struct list_head * entry;
 337                 /*
 338                  *      Pull the next fib from the fibs
 339                  */
 340                 entry = fibctx->fib_list.next;
 341                 list_del(entry);
 342                 fib = list_entry(entry, struct fib, fiblink);
 343                 fibctx->count--;
 344                 /*
 345                  *      Free the space occupied by this copy of the fib.
 346                  */
 347                 kfree(fib->hw_fib_va);
 348                 kfree(fib);
 349         }
 350         /*
 351          *      Remove the Context from the AdapterFibContext List
 352          */
 353         list_del(&fibctx->next);
 354         /*
 355          *      Invalidate context
 356          */
 357         fibctx->type = 0;
 358         /*
 359          *      Free the space occupied by the Context
 360          */
 361         kfree(fibctx);
 362         return 0;
 363 }
 364
 365 /**
 366  *      close_getadapter_fib    -       close down user fib context
 367  *      @dev: adapter
 368  *      @arg: ioctl arguments
 369  *
 370  *      This routine will close down the fibctx passed in from the user.
 371  */
 372
 373 static int close_getadapter_fib(struct aac_dev * dev, void __user *arg)
 374 {
 375         struct aac_fib_context *fibctx;
 376         int status;
 377         unsigned long flags;
 378         struct list_head * entry;
 379
 380         /*
 381          *      Verify that the HANDLE passed in was a valid AdapterFibContext
 382          *
 383          *      Search the list of AdapterFibContext addresses on the adapter
 384          *      to be sure this is a valid address
 385          */
 386
 387         entry = dev->fib_list.next;
 388         fibctx = NULL;
 389
 390         while(entry != &dev->fib_list) {
 391                 fibctx = list_entry(entry, struct aac_fib_context, next);
 392                 /*
 393                  *      Extract the fibctx from the input parameters
 394                  */
 395                 if (fibctx->unique == (u32)(uintptr_t)arg) /* We found a winner */
 396                         break;
 397                 entry = entry->next;
 398                 fibctx = NULL;
 399         }
 400
 401         if (!fibctx)
 402                 return 0; /* Already gone */
 403
 404         if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
 405                  (fibctx->size != sizeof(struct aac_fib_context)))
 406                 return -EINVAL;
 407         spin_lock_irqsave(&dev->fib_lock, flags);
 408         status = aac_close_fib_context(dev, fibctx);
 409         spin_unlock_irqrestore(&dev->fib_lock, flags);
 410         return status;
 411 }
 412
 413 /**
 414  *      check_revision  -       close down user fib context
 415  *      @dev: adapter
 416  *      @arg: ioctl arguments
 417  *
 418  *      This routine returns the driver version.
 419  *      Under Linux, there have been no version incompatibilities, so this is
 420  *      simple!
 421  */
 422
 423 static int check_revision(struct aac_dev *dev, void __user *arg)
 424 {
 425         struct revision response;
 426         char *driver_version = aac_driver_version;
 427         u32 version;
 428
 429         response.compat = 1;
 430         version = (simple_strtol(driver_version,
 431                                 &driver_version, 10) << 24) | 0x00000400;
 432         version += simple_strtol(driver_version + 1, &driver_version, 10) << 16;
 433         version += simple_strtol(driver_version + 1, NULL, 10);
 434         response.version = cpu_to_le32(version);
 435 #       ifdef AAC_DRIVER_BUILD
 436                 response.build = cpu_to_le32(AAC_DRIVER_BUILD);
 437 #       else
 438                 response.build = cpu_to_le32(9999);
 439 #       endif
 440
 441         if (copy_to_user(arg, &response, sizeof(response)))
 442                 return -EFAULT;
 443         return 0;
 444 }
 445
 446
 447 /**
 448  *
 449  * aac_send_raw_scb
 450  *
 451  */
 452
 453 static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 454 {
 455         struct fib* srbfib;
 456         int status;
 457         struct aac_srb *srbcmd = NULL;
 458         struct user_aac_srb *user_srbcmd = NULL;
 459         struct user_aac_srb __user *user_srb = arg;
 460         struct aac_srb_reply __user *user_reply;
 461         struct aac_srb_reply* reply;
 462         u32 fibsize = 0;
 463         u32 flags = 0;
 464         s32 rcode = 0;
 465         u32 data_dir;
 466         void __user *sg_user[32];
 467         void *sg_list[32];
 468         u32 sg_indx = 0;
 469         u32 byte_count = 0;
 470         u32 actual_fibsize64, actual_fibsize = 0;
 471         int i;
 472
 473
 474         if (dev->in_reset) {
 475                 dprintk((KERN_DEBUG"aacraid: send raw srb -EBUSY\n"));
 476                 return -EBUSY;
 477         }
 478         if (!capable(CAP_SYS_ADMIN)){
 479                 dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n"));
 480                 return -EPERM;
 481         }
 482         /*
 483          *      Allocate and initialize a Fib then setup a SRB command
 484          */
 485         if (!(srbfib = aac_fib_alloc(dev))) {
 486                 return -ENOMEM;
 487         }
 488         aac_fib_init(srbfib);
 489
 490         srbcmd = (struct aac_srb*) fib_data(srbfib);
 491
 492         memset(sg_list, 0, sizeof(sg_list)); /* cleanup may take issue */
 493         if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){
 494                 dprintk((KERN_DEBUG"aacraid: Could not copy data size from user\n"));
 495                 rcode = -EFAULT;
 496                 goto cleanup;
 497         }
 498
 499         if (fibsize > (dev->max_fib_size - sizeof(struct aac_fibhdr))) {
 500                 rcode = -EINVAL;
 501                 goto cleanup;
 502         }
 503
 504         user_srbcmd = kmalloc(fibsize, GFP_KERNEL);
 505         if (!user_srbcmd) {
 506                 dprintk((KERN_DEBUG"aacraid: Could not make a copy of the srb\n"));
 507                 rcode = -ENOMEM;
 508                 goto cleanup;
 509         }
 510         if(copy_from_user(user_srbcmd, user_srb,fibsize)){
 511                 dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n"));
 512                 rcode = -EFAULT;
 513                 goto cleanup;
 514         }
 515
 516         user_reply = arg+fibsize;
 517
 518         flags = user_srbcmd->flags; /* from user in cpu order */
 519         // Fix up srb for endian and force some values
 520
 521         srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);       // Force this
 522         srbcmd->channel  = cpu_to_le32(user_srbcmd->channel);
 523         srbcmd->id       = cpu_to_le32(user_srbcmd->id);
 524         srbcmd->lun      = cpu_to_le32(user_srbcmd->lun);
 525         srbcmd->timeout  = cpu_to_le32(user_srbcmd->timeout);
 526         srbcmd->flags    = cpu_to_le32(flags);
 527         srbcmd->retry_limit = 0; // Obsolete parameter
 528         srbcmd->cdb_size = cpu_to_le32(user_srbcmd->cdb_size);
 529         memcpy(srbcmd->cdb, user_srbcmd->cdb, sizeof(srbcmd->cdb));
 530
 531         switch (flags & (SRB_DataIn | SRB_DataOut)) {
 532         case SRB_DataOut:
 533                 data_dir = DMA_TO_DEVICE;
 534                 break;
 535         case (SRB_DataIn | SRB_DataOut):
 536                 data_dir = DMA_BIDIRECTIONAL;
 537                 break;
 538         case SRB_DataIn:
 539                 data_dir = DMA_FROM_DEVICE;
 540                 break;
 541         default:
 542                 data_dir = DMA_NONE;
 543         }
 544         if (user_srbcmd->sg.count > ARRAY_SIZE(sg_list)) {
 545                 dprintk((KERN_DEBUG"aacraid: too many sg entries %d\n",
 546                   le32_to_cpu(srbcmd->sg.count)));
 547                 rcode = -EINVAL;
 548                 goto cleanup;
 549         }
 550         actual_fibsize = sizeof(struct aac_srb) - sizeof(struct sgentry) +
 551                 ((user_srbcmd->sg.count & 0xff) * sizeof(struct sgentry));
 552         actual_fibsize64 = actual_fibsize + (user_srbcmd->sg.count & 0xff) *
 553           (sizeof(struct sgentry64) - sizeof(struct sgentry));
 554         /* User made a mistake - should not continue */
 555         if ((actual_fibsize != fibsize) && (actual_fibsize64 != fibsize)) {
 556                 dprintk((KERN_DEBUG"aacraid: Bad Size specified in "
 557                   "Raw SRB command calculated fibsize=%lu;%lu "
 558                   "user_srbcmd->sg.count=%d aac_srb=%lu sgentry=%lu;%lu "
 559                   "issued fibsize=%d\n",
 560                   actual_fibsize, actual_fibsize64, user_srbcmd->sg.count,
 561                   sizeof(struct aac_srb), sizeof(struct sgentry),
 562                   sizeof(struct sgentry64), fibsize));
 563                 rcode = -EINVAL;
 564                 goto cleanup;
 565         }
 566         if ((data_dir == DMA_NONE) && user_srbcmd->sg.count) {
 567                 dprintk((KERN_DEBUG"aacraid: SG with no direction specified in Raw SRB command\n"));
 568                 rcode = -EINVAL;
 569                 goto cleanup;
 570         }
 571         byte_count = 0;
 572         if (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64) {
 573                 struct user_sgmap64* upsg = (struct user_sgmap64*)&user_srbcmd->sg;
 574                 struct sgmap64* psg = (struct sgmap64*)&srbcmd->sg;
 575
 576                 /*
 577                  * This should also catch if user used the 32 bit sgmap
 578                  */
 579                 if (actual_fibsize64 == fibsize) {
 580                         actual_fibsize = actual_fibsize64;
 581                         for (i = 0; i < upsg->count; i++) {
 582                                 u64 addr;
 583                                 void* p;
 584                                 /* Does this really need to be GFP_DMA? */
 585                                 p = kmalloc(upsg->sg[i].count,GFP_KERNEL|__GFP_DMA);
 586                                 if(!p) {
 587                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 588                                           upsg->sg[i].count,i,upsg->count));
 589                                         rcode = -ENOMEM;
 590                                         goto cleanup;
 591                                 }
 592                                 addr = (u64)upsg->sg[i].addr[0];
 593                                 addr += ((u64)upsg->sg[i].addr[1]) << 32;
 594                                 sg_user[i] = (void __user *)(uintptr_t)addr;
 595                                 sg_list[i] = p; // save so we can clean up later
 596                                 sg_indx = i;
 597
 598                                 if (flags & SRB_DataOut) {
 599                                         if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
 600                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
 601                                                 rcode = -EFAULT;
 602                                                 goto cleanup;
 603                                         }
 604                                 }
 605                                 addr = pci_map_single(dev->pdev, p, upsg->sg[i].count, data_dir);
 606
 607                                 psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
 608                                 psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
 609                                 byte_count += upsg->sg[i].count;
 610                                 psg->sg[i].count = cpu_to_le32(upsg->sg[i].count);
 611                         }
 612                 } else {
 613                         struct user_sgmap* usg;
 614                         usg = kmalloc(actual_fibsize - sizeof(struct aac_srb)
 615                           + sizeof(struct sgmap), GFP_KERNEL);
 616                         if (!usg) {
 617                                 dprintk((KERN_DEBUG"aacraid: Allocation error in Raw SRB command\n"));
 618                                 rcode = -ENOMEM;
 619                                 goto cleanup;
 620                         }
 621                         memcpy (usg, upsg, actual_fibsize - sizeof(struct aac_srb)
 622                           + sizeof(struct sgmap));
 623                         actual_fibsize = actual_fibsize64;
 624
 625                         for (i = 0; i < usg->count; i++) {
 626                                 u64 addr;
 627                                 void* p;
 628                                 /* Does this really need to be GFP_DMA? */
 629                                 p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
 630                                 if(!p) {
 631                                         kfree (usg);
 632                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 633                                           usg->sg[i].count,i,usg->count));
 634                                         rcode = -ENOMEM;
 635                                         goto cleanup;
 636                                 }
 637                                 sg_user[i] = (void __user *)(uintptr_t)usg->sg[i].addr;
 638                                 sg_list[i] = p; // save so we can clean up later
 639                                 sg_indx = i;
 640
 641                                 if (flags & SRB_DataOut) {
 642                                         if(copy_from_user(p,sg_user[i],upsg->sg[i].count)){
 643                                                 kfree (usg);
 644                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
 645                                                 rcode = -EFAULT;
 646                                                 goto cleanup;
 647                                         }
 648                                 }
 649                                 addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir);
 650
 651                                 psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
 652                                 psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
 653                                 byte_count += usg->sg[i].count;
 654                                 psg->sg[i].count = cpu_to_le32(usg->sg[i].count);
 655                         }
 656                         kfree (usg);
 657                 }
 658                 srbcmd->count = cpu_to_le32(byte_count);
 659                 psg->count = cpu_to_le32(sg_indx+1);
 660                 status = aac_fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,NULL,NULL);
 661         } else {
 662                 struct user_sgmap* upsg = &user_srbcmd->sg;
 663                 struct sgmap* psg = &srbcmd->sg;
 664
 665                 if (actual_fibsize64 == fibsize) {
 666                         struct user_sgmap64* usg = (struct user_sgmap64 *)upsg;
 667                         for (i = 0; i < upsg->count; i++) {
 668                                 uintptr_t addr;
 669                                 void* p;
 670                                 /* Does this really need to be GFP_DMA? */
 671                                 p = kmalloc(usg->sg[i].count,GFP_KERNEL|__GFP_DMA);
 672                                 if(!p) {
 673                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 674                                           usg->sg[i].count,i,usg->count));
 675                                         rcode = -ENOMEM;
 676                                         goto cleanup;
 677                                 }
 678                                 addr = (u64)usg->sg[i].addr[0];
 679                                 addr += ((u64)usg->sg[i].addr[1]) << 32;
 680                                 sg_user[i] = (void __user *)addr;
 681                                 sg_list[i] = p; // save so we can clean up later
 682                                 sg_indx = i;
 683
 684                                 if (flags & SRB_DataOut) {
 685                                         if(copy_from_user(p,sg_user[i],usg->sg[i].count)){
 686                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
 687                                                 rcode = -EFAULT;
 688                                                 goto cleanup;
 689                                         }
 690                                 }
 691                                 addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir);
 692
 693                                 psg->sg[i].addr = cpu_to_le32(addr & 0xffffffff);
 694                                 byte_count += usg->sg[i].count;
 695                                 psg->sg[i].count = cpu_to_le32(usg->sg[i].count);
 696                         }
 697                 } else {
 698                         for (i = 0; i < upsg->count; i++) {
 699                                 dma_addr_t addr;
 700                                 void* p;
 701                                 p = kmalloc(upsg->sg[i].count, GFP_KERNEL);
 702                                 if (!p) {
 703                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 704                                           upsg->sg[i].count, i, upsg->count));
 705                                         rcode = -ENOMEM;
 706                                         goto cleanup;
 707                                 }
 708                                 sg_user[i] = (void __user *)(uintptr_t)upsg->sg[i].addr;
 709                                 sg_list[i] = p; // save so we can clean up later
 710                                 sg_indx = i;
 711
 712                                 if (flags & SRB_DataOut) {
 713                                         if(copy_from_user(p, sg_user[i],
 714                                                         upsg->sg[i].count)) {
 715                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
 716                                                 rcode = -EFAULT;
 717                                                 goto cleanup;
 718                                         }
 719                                 }
 720                                 addr = pci_map_single(dev->pdev, p,
 721                                         upsg->sg[i].count, data_dir);
 722
 723                                 psg->sg[i].addr = cpu_to_le32(addr);
 724                                 byte_count += upsg->sg[i].count;
 725                                 psg->sg[i].count = cpu_to_le32(upsg->sg[i].count);
 726                         }
 727                 }
 728                 srbcmd->count = cpu_to_le32(byte_count);
 729                 psg->count = cpu_to_le32(sg_indx+1);
 730                 status = aac_fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, NULL, NULL);
 731         }
 732         if (status == -EINTR) {
 733                 rcode = -EINTR;
 734                 goto cleanup;
 735         }
 736
 737         if (status != 0){
 738                 dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n"));
 739                 rcode = -ENXIO;
 740                 goto cleanup;
 741         }
 742
 743         if (flags & SRB_DataIn) {
 744                 for(i = 0 ; i <= sg_indx; i++){
 745                         byte_count = le32_to_cpu(
 746                           (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64)
 747                               ? ((struct sgmap64*)&srbcmd->sg)->sg[i].count
 748                               : srbcmd->sg.sg[i].count);
 749                         if(copy_to_user(sg_user[i], sg_list[i], byte_count)){
 750                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n"));
 751                                 rcode = -EFAULT;
 752                                 goto cleanup;
 753
 754                         }
 755                 }
 756         }
 757
 758         reply = (struct aac_srb_reply *) fib_data(srbfib);
 759         if(copy_to_user(user_reply,reply,sizeof(struct aac_srb_reply))){
 760                 dprintk((KERN_DEBUG"aacraid: Could not copy reply to user\n"));
 761                 rcode = -EFAULT;
 762                 goto cleanup;
 763         }
 764
 765 cleanup:
 766         kfree(user_srbcmd);
 767         for(i=0; i <= sg_indx; i++){
 768                 kfree(sg_list[i]);
 769         }
 770         if (rcode != -EINTR) {
 771                 aac_fib_complete(srbfib);
 772                 aac_fib_free(srbfib);
 773         }
 774
 775         return rcode;
 776 }
 777
 778 struct aac_pci_info {
 779         u32 bus;
 780         u32 slot;
 781 };
 782
 783
 784 static int aac_get_pci_info(struct aac_dev* dev, void __user *arg)
 785 {
 786         struct aac_pci_info pci_info;
 787
 788         pci_info.bus = dev->pdev->bus->number;
 789         pci_info.slot = PCI_SLOT(dev->pdev->devfn);
 790
 791         if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) {
 792                 dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n"));
 793                 return -EFAULT;
 794         }
 795         return 0;
 796 }
 797
 798
 799 int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
 800 {
 801         int status;
 802
 803         /*
 804          *      HBA gets first crack
 805          */
 806
 807         status = aac_dev_ioctl(dev, cmd, arg);
 808         if(status != -ENOTTY)
 809                 return status;
 810
 811         switch (cmd) {
 812         case FSACTL_MINIPORT_REV_CHECK:
 813                 status = check_revision(dev, arg);
 814                 break;
 815         case FSACTL_SEND_LARGE_FIB:
 816         case FSACTL_SENDFIB:
 817                 status = ioctl_send_fib(dev, arg);
 818                 break;
 819         case FSACTL_OPEN_GET_ADAPTER_FIB:
 820                 status = open_getadapter_fib(dev, arg);
 821                 break;
 822         case FSACTL_GET_NEXT_ADAPTER_FIB:
 823                 status = next_getadapter_fib(dev, arg);
 824                 break;
 825         case FSACTL_CLOSE_GET_ADAPTER_FIB:
 826                 status = close_getadapter_fib(dev, arg);
 827                 break;
 828         case FSACTL_SEND_RAW_SRB:
 829                 status = aac_send_raw_srb(dev,arg);
 830                 break;
 831         case FSACTL_GET_PCI_INFO:
 832                 status = aac_get_pci_info(dev,arg);
 833                 break;
 834         default:
 835                 status = -ENOTTY;
 836                 break;
 837         }
 838         return status;
 839 }
 840