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