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