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