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