drivers/scsi/aacraid/commctrl.c

   1 /*
   2  *      Adaptec AAC series RAID controller driver
   3  *      (c) Copyright 2001 Red Hat Inc.
   4  *
   5  * based on the old aacraid driver that is..
   6  * Adaptec aacraid device driver for Linux.
   7  *
   8  * Copyright (c) 2000-2010 Adaptec, Inc.
   9  *               2010-2015 PMC-Sierra, Inc. ([email protected])
  10  *               2016-2017 Microsemi Corp. ([email protected])
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2, or (at your option)
  15  * any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; see the file COPYING.  If not, write to
  24  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  25  *
  26  * Module Name:
  27  *  commctrl.c
  28  *
  29  * Abstract: Contains all routines for control of the AFA comm layer
  30  *
  31  */
  32
  33 #include <linux/kernel.h>
  34 #include <linux/init.h>
  35 #include <linux/types.h>
  36 #include <linux/pci.h>
  37 #include <linux/spinlock.h>
  38 #include <linux/slab.h>
  39 #include <linux/completion.h>
  40 #include <linux/dma-mapping.h>
  41 #include <linux/blkdev.h>
  42 #include <linux/delay.h> /* ssleep prototype */
  43 #include <linux/kthread.h>
  44 #include <linux/semaphore.h>
  45 #include <linux/uaccess.h>
  46 #include <scsi/scsi_host.h>
  47
  48 #include "aacraid.h"
  49
  50 /**
  51  *      ioctl_send_fib  -       send a FIB from userspace
  52  *      @dev:   adapter is being processed
  53  *      @arg:   arguments to the ioctl call
  54  *
  55  *      This routine sends a fib to the adapter on behalf of a user level
  56  *      program.
  57  */
  58 # define AAC_DEBUG_PREAMBLE     KERN_INFO
  59 # define AAC_DEBUG_POSTAMBLE
  60
  61 static int ioctl_send_fib(struct aac_dev * dev, void __user *arg)
  62 {
  63         struct hw_fib * kfib;
  64         struct fib *fibptr;
  65         struct hw_fib * hw_fib = (struct hw_fib *)0;
  66         dma_addr_t hw_fib_pa = (dma_addr_t)0LL;
  67         unsigned int size, osize;
  68         int retval;
  69
  70         if (dev->in_reset) {
  71                 return -EBUSY;
  72         }
  73         fibptr = aac_fib_alloc(dev);
  74         if(fibptr == NULL) {
  75                 return -ENOMEM;
  76         }
  77
  78         kfib = fibptr->hw_fib_va;
  79         /*
  80          *      First copy in the header so that we can check the size field.
  81          */
  82         if (copy_from_user((void *)kfib, arg, sizeof(struct aac_fibhdr))) {
  83                 aac_fib_free(fibptr);
  84                 return -EFAULT;
  85         }
  86         /*
  87          *      Since we copy based on the fib header size, make sure that we
  88          *      will not overrun the buffer when we copy the memory. Return
  89          *      an error if we would.
  90          */
  91         osize = size = le16_to_cpu(kfib->header.Size) +
  92                 sizeof(struct aac_fibhdr);
  93         if (size < le16_to_cpu(kfib->header.SenderSize))
  94                 size = le16_to_cpu(kfib->header.SenderSize);
  95         if (size > dev->max_fib_size) {
  96                 dma_addr_t daddr;
  97
  98                 if (size > 2048) {
  99                         retval = -EINVAL;
 100                         goto cleanup;
 101                 }
 102
 103                 kfib = dma_alloc_coherent(&dev->pdev->dev, size, &daddr,
 104                                           GFP_KERNEL);
 105                 if (!kfib) {
 106                         retval = -ENOMEM;
 107                         goto cleanup;
 108                 }
 109
 110                 /* Highjack the hw_fib */
 111                 hw_fib = fibptr->hw_fib_va;
 112                 hw_fib_pa = fibptr->hw_fib_pa;
 113                 fibptr->hw_fib_va = kfib;
 114                 fibptr->hw_fib_pa = daddr;
 115                 memset(((char *)kfib) + dev->max_fib_size, 0, size - dev->max_fib_size);
 116                 memcpy(kfib, hw_fib, dev->max_fib_size);
 117         }
 118
 119         if (copy_from_user(kfib, arg, size)) {
 120                 retval = -EFAULT;
 121                 goto cleanup;
 122         }
 123
 124         /* Sanity check the second copy */
 125         if ((osize != le16_to_cpu(kfib->header.Size) +
 126                 sizeof(struct aac_fibhdr))
 127                 || (size < le16_to_cpu(kfib->header.SenderSize))) {
 128                 retval = -EINVAL;
 129                 goto cleanup;
 130         }
 131
 132         if (kfib->header.Command == cpu_to_le16(TakeABreakPt)) {
 133                 aac_adapter_interrupt(dev);
 134                 /*
 135                  * Since we didn't really send a fib, zero out the state to allow
 136                  * cleanup code not to assert.
 137                  */
 138                 kfib->header.XferState = 0;
 139         } else {
 140                 retval = aac_fib_send(le16_to_cpu(kfib->header.Command), fibptr,
 141                                 le16_to_cpu(kfib->header.Size) , FsaNormal,
 142                                 1, 1, NULL, NULL);
 143                 if (retval) {
 144                         goto cleanup;
 145                 }
 146                 if (aac_fib_complete(fibptr) != 0) {
 147                         retval = -EINVAL;
 148                         goto cleanup;
 149                 }
 150         }
 151         /*
 152          *      Make sure that the size returned by the adapter (which includes
 153          *      the header) is less than or equal to the size of a fib, so we
 154          *      don't corrupt application data. Then copy that size to the user
 155          *      buffer. (Don't try to add the header information again, since it
 156          *      was already included by the adapter.)
 157          */
 158
 159         retval = 0;
 160         if (copy_to_user(arg, (void *)kfib, size))
 161                 retval = -EFAULT;
 162 cleanup:
 163         if (hw_fib) {
 164                 dma_free_coherent(&dev->pdev->dev, size, kfib,
 165                                   fibptr->hw_fib_pa);
 166                 fibptr->hw_fib_pa = hw_fib_pa;
 167                 fibptr->hw_fib_va = hw_fib;
 168         }
 169         if (retval != -ERESTARTSYS)
 170                 aac_fib_free(fibptr);
 171         return retval;
 172 }
 173
 174 /**
 175  *      open_getadapter_fib     -       Get the next fib
 176  *
 177  *      This routine will get the next Fib, if available, from the AdapterFibContext
 178  *      passed in from the user.
 179  */
 180
 181 static int open_getadapter_fib(struct aac_dev * dev, void __user *arg)
 182 {
 183         struct aac_fib_context * fibctx;
 184         int status;
 185
 186         fibctx = kmalloc(sizeof(struct aac_fib_context), GFP_KERNEL);
 187         if (fibctx == NULL) {
 188                 status = -ENOMEM;
 189         } else {
 190                 unsigned long flags;
 191                 struct list_head * entry;
 192                 struct aac_fib_context * context;
 193
 194                 fibctx->type = FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT;
 195                 fibctx->size = sizeof(struct aac_fib_context);
 196                 /*
 197                  *      Yes yes, I know this could be an index, but we have a
 198                  * better guarantee of uniqueness for the locked loop below.
 199                  * Without the aid of a persistent history, this also helps
 200                  * reduce the chance that the opaque context would be reused.
 201                  */
 202                 fibctx->unique = (u32)((ulong)fibctx & 0xFFFFFFFF);
 203                 /*
 204                  *      Initialize the mutex used to wait for the next AIF.
 205                  */
 206                 sema_init(&fibctx->wait_sem, 0);
 207                 fibctx->wait = 0;
 208                 /*
 209                  *      Initialize the fibs and set the count of fibs on
 210                  *      the list to 0.
 211                  */
 212                 fibctx->count = 0;
 213                 INIT_LIST_HEAD(&fibctx->fib_list);
 214                 fibctx->jiffies = jiffies/HZ;
 215                 /*
 216                  *      Now add this context onto the adapter's
 217                  *      AdapterFibContext list.
 218                  */
 219                 spin_lock_irqsave(&dev->fib_lock, flags);
 220                 /* Ensure that we have a unique identifier */
 221                 entry = dev->fib_list.next;
 222                 while (entry != &dev->fib_list) {
 223                         context = list_entry(entry, struct aac_fib_context, next);
 224                         if (context->unique == fibctx->unique) {
 225                                 /* Not unique (32 bits) */
 226                                 fibctx->unique++;
 227                                 entry = dev->fib_list.next;
 228                         } else {
 229                                 entry = entry->next;
 230                         }
 231                 }
 232                 list_add_tail(&fibctx->next, &dev->fib_list);
 233                 spin_unlock_irqrestore(&dev->fib_lock, flags);
 234                 if (copy_to_user(arg, &fibctx->unique,
 235                                                 sizeof(fibctx->unique))) {
 236                         status = -EFAULT;
 237                 } else {
 238                         status = 0;
 239                 }
 240         }
 241         return status;
 242 }
 243
 244 /**
 245  *      next_getadapter_fib     -       get the next fib
 246  *      @dev: adapter to use
 247  *      @arg: ioctl argument
 248  *
 249  *      This routine will get the next Fib, if available, from the AdapterFibContext
 250  *      passed in from the user.
 251  */
 252
 253 static int next_getadapter_fib(struct aac_dev * dev, void __user *arg)
 254 {
 255         struct fib_ioctl f;
 256         struct fib *fib;
 257         struct aac_fib_context *fibctx;
 258         int status;
 259         struct list_head * entry;
 260         unsigned long flags;
 261
 262         if(copy_from_user((void *)&f, arg, sizeof(struct fib_ioctl)))
 263                 return -EFAULT;
 264         /*
 265          *      Verify that the HANDLE passed in was a valid AdapterFibContext
 266          *
 267          *      Search the list of AdapterFibContext addresses on the adapter
 268          *      to be sure this is a valid address
 269          */
 270         spin_lock_irqsave(&dev->fib_lock, flags);
 271         entry = dev->fib_list.next;
 272         fibctx = NULL;
 273
 274         while (entry != &dev->fib_list) {
 275                 fibctx = list_entry(entry, struct aac_fib_context, next);
 276                 /*
 277                  *      Extract the AdapterFibContext from the Input parameters.
 278                  */
 279                 if (fibctx->unique == f.fibctx) { /* We found a winner */
 280                         break;
 281                 }
 282                 entry = entry->next;
 283                 fibctx = NULL;
 284         }
 285         if (!fibctx) {
 286                 spin_unlock_irqrestore(&dev->fib_lock, flags);
 287                 dprintk ((KERN_INFO "Fib Context not found\n"));
 288                 return -EINVAL;
 289         }
 290
 291         if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
 292                  (fibctx->size != sizeof(struct aac_fib_context))) {
 293                 spin_unlock_irqrestore(&dev->fib_lock, flags);
 294                 dprintk ((KERN_INFO "Fib Context corrupt?\n"));
 295                 return -EINVAL;
 296         }
 297         status = 0;
 298         /*
 299          *      If there are no fibs to send back, then either wait or return
 300          *      -EAGAIN
 301          */
 302 return_fib:
 303         if (!list_empty(&fibctx->fib_list)) {
 304                 /*
 305                  *      Pull the next fib from the fibs
 306                  */
 307                 entry = fibctx->fib_list.next;
 308                 list_del(entry);
 309
 310                 fib = list_entry(entry, struct fib, fiblink);
 311                 fibctx->count--;
 312                 spin_unlock_irqrestore(&dev->fib_lock, flags);
 313                 if (copy_to_user(f.fib, fib->hw_fib_va, sizeof(struct hw_fib))) {
 314                         kfree(fib->hw_fib_va);
 315                         kfree(fib);
 316                         return -EFAULT;
 317                 }
 318                 /*
 319                  *      Free the space occupied by this copy of the fib.
 320                  */
 321                 kfree(fib->hw_fib_va);
 322                 kfree(fib);
 323                 status = 0;
 324         } else {
 325                 spin_unlock_irqrestore(&dev->fib_lock, flags);
 326                 /* If someone killed the AIF aacraid thread, restart it */
 327                 status = !dev->aif_thread;
 328                 if (status && !dev->in_reset && dev->queues && dev->fsa_dev) {
 329                         /* Be paranoid, be very paranoid! */
 330                         kthread_stop(dev->thread);
 331                         ssleep(1);
 332                         dev->aif_thread = 0;
 333                         dev->thread = kthread_run(aac_command_thread, dev,
 334                                                   "%s", dev->name);
 335                         ssleep(1);
 336                 }
 337                 if (f.wait) {
 338                         if(down_interruptible(&fibctx->wait_sem) < 0) {
 339                                 status = -ERESTARTSYS;
 340                         } else {
 341                                 /* Lock again and retry */
 342                                 spin_lock_irqsave(&dev->fib_lock, flags);
 343                                 goto return_fib;
 344                         }
 345                 } else {
 346                         status = -EAGAIN;
 347                 }
 348         }
 349         fibctx->jiffies = jiffies/HZ;
 350         return status;
 351 }
 352
 353 int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context * fibctx)
 354 {
 355         struct fib *fib;
 356
 357         /*
 358          *      First free any FIBs that have not been consumed.
 359          */
 360         while (!list_empty(&fibctx->fib_list)) {
 361                 struct list_head * entry;
 362                 /*
 363                  *      Pull the next fib from the fibs
 364                  */
 365                 entry = fibctx->fib_list.next;
 366                 list_del(entry);
 367                 fib = list_entry(entry, struct fib, fiblink);
 368                 fibctx->count--;
 369                 /*
 370                  *      Free the space occupied by this copy of the fib.
 371                  */
 372                 kfree(fib->hw_fib_va);
 373                 kfree(fib);
 374         }
 375         /*
 376          *      Remove the Context from the AdapterFibContext List
 377          */
 378         list_del(&fibctx->next);
 379         /*
 380          *      Invalidate context
 381          */
 382         fibctx->type = 0;
 383         /*
 384          *      Free the space occupied by the Context
 385          */
 386         kfree(fibctx);
 387         return 0;
 388 }
 389
 390 /**
 391  *      close_getadapter_fib    -       close down user fib context
 392  *      @dev: adapter
 393  *      @arg: ioctl arguments
 394  *
 395  *      This routine will close down the fibctx passed in from the user.
 396  */
 397
 398 static int close_getadapter_fib(struct aac_dev * dev, void __user *arg)
 399 {
 400         struct aac_fib_context *fibctx;
 401         int status;
 402         unsigned long flags;
 403         struct list_head * entry;
 404
 405         /*
 406          *      Verify that the HANDLE passed in was a valid AdapterFibContext
 407          *
 408          *      Search the list of AdapterFibContext addresses on the adapter
 409          *      to be sure this is a valid address
 410          */
 411
 412         entry = dev->fib_list.next;
 413         fibctx = NULL;
 414
 415         while(entry != &dev->fib_list) {
 416                 fibctx = list_entry(entry, struct aac_fib_context, next);
 417                 /*
 418                  *      Extract the fibctx from the input parameters
 419                  */
 420                 if (fibctx->unique == (u32)(uintptr_t)arg) /* We found a winner */
 421                         break;
 422                 entry = entry->next;
 423                 fibctx = NULL;
 424         }
 425
 426         if (!fibctx)
 427                 return 0; /* Already gone */
 428
 429         if((fibctx->type != FSAFS_NTC_GET_ADAPTER_FIB_CONTEXT) ||
 430                  (fibctx->size != sizeof(struct aac_fib_context)))
 431                 return -EINVAL;
 432         spin_lock_irqsave(&dev->fib_lock, flags);
 433         status = aac_close_fib_context(dev, fibctx);
 434         spin_unlock_irqrestore(&dev->fib_lock, flags);
 435         return status;
 436 }
 437
 438 /**
 439  *      check_revision  -       close down user fib context
 440  *      @dev: adapter
 441  *      @arg: ioctl arguments
 442  *
 443  *      This routine returns the driver version.
 444  *      Under Linux, there have been no version incompatibilities, so this is
 445  *      simple!
 446  */
 447
 448 static int check_revision(struct aac_dev *dev, void __user *arg)
 449 {
 450         struct revision response;
 451         char *driver_version = aac_driver_version;
 452         u32 version;
 453
 454         response.compat = 1;
 455         version = (simple_strtol(driver_version,
 456                                 &driver_version, 10) << 24) | 0x00000400;
 457         version += simple_strtol(driver_version + 1, &driver_version, 10) << 16;
 458         version += simple_strtol(driver_version + 1, NULL, 10);
 459         response.version = cpu_to_le32(version);
 460 #       ifdef AAC_DRIVER_BUILD
 461                 response.build = cpu_to_le32(AAC_DRIVER_BUILD);
 462 #       else
 463                 response.build = cpu_to_le32(9999);
 464 #       endif
 465
 466         if (copy_to_user(arg, &response, sizeof(response)))
 467                 return -EFAULT;
 468         return 0;
 469 }
 470
 471
 472 /**
 473  *
 474  * aac_send_raw_scb
 475  *
 476  */
 477
 478 static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
 479 {
 480         struct fib* srbfib;
 481         int status;
 482         struct aac_srb *srbcmd = NULL;
 483         struct aac_hba_cmd_req *hbacmd = NULL;
 484         struct user_aac_srb *user_srbcmd = NULL;
 485         struct user_aac_srb __user *user_srb = arg;
 486         struct aac_srb_reply __user *user_reply;
 487         u32 chn;
 488         u32 fibsize = 0;
 489         u32 flags = 0;
 490         s32 rcode = 0;
 491         u32 data_dir;
 492         void __user *sg_user[HBA_MAX_SG_EMBEDDED];
 493         void *sg_list[HBA_MAX_SG_EMBEDDED];
 494         u32 sg_count[HBA_MAX_SG_EMBEDDED];
 495         u32 sg_indx = 0;
 496         u32 byte_count = 0;
 497         u32 actual_fibsize64, actual_fibsize = 0;
 498         int i;
 499         int is_native_device;
 500         u64 address;
 501
 502
 503         if (dev->in_reset) {
 504                 dprintk((KERN_DEBUG"aacraid: send raw srb -EBUSY\n"));
 505                 return -EBUSY;
 506         }
 507         if (!capable(CAP_SYS_ADMIN)){
 508                 dprintk((KERN_DEBUG"aacraid: No permission to send raw srb\n"));
 509                 return -EPERM;
 510         }
 511         /*
 512          *      Allocate and initialize a Fib then setup a SRB command
 513          */
 514         if (!(srbfib = aac_fib_alloc(dev))) {
 515                 return -ENOMEM;
 516         }
 517
 518         memset(sg_list, 0, sizeof(sg_list)); /* cleanup may take issue */
 519         if(copy_from_user(&fibsize, &user_srb->count,sizeof(u32))){
 520                 dprintk((KERN_DEBUG"aacraid: Could not copy data size from user\n"));
 521                 rcode = -EFAULT;
 522                 goto cleanup;
 523         }
 524
 525         if ((fibsize < (sizeof(struct user_aac_srb) - sizeof(struct user_sgentry))) ||
 526             (fibsize > (dev->max_fib_size - sizeof(struct aac_fibhdr)))) {
 527                 rcode = -EINVAL;
 528                 goto cleanup;
 529         }
 530
 531         user_srbcmd = kmalloc(fibsize, GFP_KERNEL);
 532         if (!user_srbcmd) {
 533                 dprintk((KERN_DEBUG"aacraid: Could not make a copy of the srb\n"));
 534                 rcode = -ENOMEM;
 535                 goto cleanup;
 536         }
 537         if(copy_from_user(user_srbcmd, user_srb,fibsize)){
 538                 dprintk((KERN_DEBUG"aacraid: Could not copy srb from user\n"));
 539                 rcode = -EFAULT;
 540                 goto cleanup;
 541         }
 542
 543         flags = user_srbcmd->flags; /* from user in cpu order */
 544         switch (flags & (SRB_DataIn | SRB_DataOut)) {
 545         case SRB_DataOut:
 546                 data_dir = DMA_TO_DEVICE;
 547                 break;
 548         case (SRB_DataIn | SRB_DataOut):
 549                 data_dir = DMA_BIDIRECTIONAL;
 550                 break;
 551         case SRB_DataIn:
 552                 data_dir = DMA_FROM_DEVICE;
 553                 break;
 554         default:
 555                 data_dir = DMA_NONE;
 556         }
 557         if (user_srbcmd->sg.count > ARRAY_SIZE(sg_list)) {
 558                 dprintk((KERN_DEBUG"aacraid: too many sg entries %d\n",
 559                         user_srbcmd->sg.count));
 560                 rcode = -EINVAL;
 561                 goto cleanup;
 562         }
 563         if ((data_dir == DMA_NONE) && user_srbcmd->sg.count) {
 564                 dprintk((KERN_DEBUG"aacraid:SG with no direction specified\n"));
 565                 rcode = -EINVAL;
 566                 goto cleanup;
 567         }
 568         actual_fibsize = sizeof(struct aac_srb) - sizeof(struct sgentry) +
 569                 ((user_srbcmd->sg.count & 0xff) * sizeof(struct sgentry));
 570         actual_fibsize64 = actual_fibsize + (user_srbcmd->sg.count & 0xff) *
 571           (sizeof(struct sgentry64) - sizeof(struct sgentry));
 572         /* User made a mistake - should not continue */
 573         if ((actual_fibsize != fibsize) && (actual_fibsize64 != fibsize)) {
 574                 dprintk((KERN_DEBUG"aacraid: Bad Size specified in "
 575                   "Raw SRB command calculated fibsize=%lu;%lu "
 576                   "user_srbcmd->sg.count=%d aac_srb=%lu sgentry=%lu;%lu "
 577                   "issued fibsize=%d\n",
 578                   actual_fibsize, actual_fibsize64, user_srbcmd->sg.count,
 579                   sizeof(struct aac_srb), sizeof(struct sgentry),
 580                   sizeof(struct sgentry64), fibsize));
 581                 rcode = -EINVAL;
 582                 goto cleanup;
 583         }
 584
 585         chn = user_srbcmd->channel;
 586         if (chn < AAC_MAX_BUSES && user_srbcmd->id < AAC_MAX_TARGETS &&
 587                 dev->hba_map[chn][user_srbcmd->id].devtype ==
 588                 AAC_DEVTYPE_NATIVE_RAW) {
 589                 is_native_device = 1;
 590                 hbacmd = (struct aac_hba_cmd_req *)srbfib->hw_fib_va;
 591                 memset(hbacmd, 0, 96);  /* sizeof(*hbacmd) is not necessary */
 592
 593                 /* iu_type is a parameter of aac_hba_send */
 594                 switch (data_dir) {
 595                 case DMA_TO_DEVICE:
 596                         hbacmd->byte1 = 2;
 597                         break;
 598                 case DMA_FROM_DEVICE:
 599                 case DMA_BIDIRECTIONAL:
 600                         hbacmd->byte1 = 1;
 601                         break;
 602                 case DMA_NONE:
 603                 default:
 604                         break;
 605                 }
 606                 hbacmd->lun[1] = cpu_to_le32(user_srbcmd->lun);
 607                 hbacmd->it_nexus = dev->hba_map[chn][user_srbcmd->id].rmw_nexus;
 608
 609                 /*
 610                  * we fill in reply_qid later in aac_src_deliver_message
 611                  * we fill in iu_type, request_id later in aac_hba_send
 612                  * we fill in emb_data_desc_count, data_length later
 613                  * in sg list build
 614                  */
 615
 616                 memcpy(hbacmd->cdb, user_srbcmd->cdb, sizeof(hbacmd->cdb));
 617
 618                 address = (u64)srbfib->hw_error_pa;
 619                 hbacmd->error_ptr_hi = cpu_to_le32((u32)(address >> 32));
 620                 hbacmd->error_ptr_lo = cpu_to_le32((u32)(address & 0xffffffff));
 621                 hbacmd->error_length = cpu_to_le32(FW_ERROR_BUFFER_SIZE);
 622                 hbacmd->emb_data_desc_count =
 623                                         cpu_to_le32(user_srbcmd->sg.count);
 624                 srbfib->hbacmd_size = 64 +
 625                         user_srbcmd->sg.count * sizeof(struct aac_hba_sgl);
 626
 627         } else {
 628                 is_native_device = 0;
 629                 aac_fib_init(srbfib);
 630
 631                 /* raw_srb FIB is not FastResponseCapable */
 632                 srbfib->hw_fib_va->header.XferState &=
 633                         ~cpu_to_le32(FastResponseCapable);
 634
 635                 srbcmd = (struct aac_srb *) fib_data(srbfib);
 636
 637                 // Fix up srb for endian and force some values
 638
 639                 srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi); // Force this
 640                 srbcmd->channel  = cpu_to_le32(user_srbcmd->channel);
 641                 srbcmd->id       = cpu_to_le32(user_srbcmd->id);
 642                 srbcmd->lun      = cpu_to_le32(user_srbcmd->lun);
 643                 srbcmd->timeout  = cpu_to_le32(user_srbcmd->timeout);
 644                 srbcmd->flags    = cpu_to_le32(flags);
 645                 srbcmd->retry_limit = 0; // Obsolete parameter
 646                 srbcmd->cdb_size = cpu_to_le32(user_srbcmd->cdb_size);
 647                 memcpy(srbcmd->cdb, user_srbcmd->cdb, sizeof(srbcmd->cdb));
 648         }
 649
 650         byte_count = 0;
 651         if (is_native_device) {
 652                 struct user_sgmap *usg32 = &user_srbcmd->sg;
 653                 struct user_sgmap64 *usg64 =
 654                         (struct user_sgmap64 *)&user_srbcmd->sg;
 655
 656                 for (i = 0; i < usg32->count; i++) {
 657                         void *p;
 658                         u64 addr;
 659
 660                         sg_count[i] = (actual_fibsize64 == fibsize) ?
 661                                 usg64->sg[i].count : usg32->sg[i].count;
 662                         if (sg_count[i] >
 663                                 (dev->scsi_host_ptr->max_sectors << 9)) {
 664                                 pr_err("aacraid: upsg->sg[%d].count=%u>%u\n",
 665                                         i, sg_count[i],
 666                                         dev->scsi_host_ptr->max_sectors << 9);
 667                                 rcode = -EINVAL;
 668                                 goto cleanup;
 669                         }
 670
 671                         p = kmalloc(sg_count[i], GFP_KERNEL);
 672                         if (!p) {
 673                                 rcode = -ENOMEM;
 674                                 goto cleanup;
 675                         }
 676
 677                         if (actual_fibsize64 == fibsize) {
 678                                 addr = (u64)usg64->sg[i].addr[0];
 679                                 addr += ((u64)usg64->sg[i].addr[1]) << 32;
 680                         } else {
 681                                 addr = (u64)usg32->sg[i].addr;
 682                         }
 683
 684                         sg_user[i] = (void __user *)(uintptr_t)addr;
 685                         sg_list[i] = p; // save so we can clean up later
 686                         sg_indx = i;
 687
 688                         if (flags & SRB_DataOut) {
 689                                 if (copy_from_user(p, sg_user[i],
 690                                         sg_count[i])) {
 691                                         rcode = -EFAULT;
 692                                         goto cleanup;
 693                                 }
 694                         }
 695                         addr = pci_map_single(dev->pdev, p, sg_count[i],
 696                                                 data_dir);
 697                         hbacmd->sge[i].addr_hi = cpu_to_le32((u32)(addr>>32));
 698                         hbacmd->sge[i].addr_lo = cpu_to_le32(
 699                                                 (u32)(addr & 0xffffffff));
 700                         hbacmd->sge[i].len = cpu_to_le32(sg_count[i]);
 701                         hbacmd->sge[i].flags = 0;
 702                         byte_count += sg_count[i];
 703                 }
 704
 705                 if (usg32->count > 0)   /* embedded sglist */
 706                         hbacmd->sge[usg32->count-1].flags =
 707                                 cpu_to_le32(0x40000000);
 708                 hbacmd->data_length = cpu_to_le32(byte_count);
 709
 710                 status = aac_hba_send(HBA_IU_TYPE_SCSI_CMD_REQ, srbfib,
 711                                         NULL, NULL);
 712
 713         } else if (dev->adapter_info.options & AAC_OPT_SGMAP_HOST64) {
 714                 struct user_sgmap64* upsg = (struct user_sgmap64*)&user_srbcmd->sg;
 715                 struct sgmap64* psg = (struct sgmap64*)&srbcmd->sg;
 716
 717                 /*
 718                  * This should also catch if user used the 32 bit sgmap
 719                  */
 720                 if (actual_fibsize64 == fibsize) {
 721                         actual_fibsize = actual_fibsize64;
 722                         for (i = 0; i < upsg->count; i++) {
 723                                 u64 addr;
 724                                 void* p;
 725
 726                                 sg_count[i] = upsg->sg[i].count;
 727                                 if (sg_count[i] >
 728                                     ((dev->adapter_info.options &
 729                                      AAC_OPT_NEW_COMM) ?
 730                                       (dev->scsi_host_ptr->max_sectors << 9) :
 731                                       65536)) {
 732                                         rcode = -EINVAL;
 733                                         goto cleanup;
 734                                 }
 735
 736                                 p = kmalloc(sg_count[i], GFP_KERNEL);
 737                                 if(!p) {
 738                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 739                                           sg_count[i], i, upsg->count));
 740                                         rcode = -ENOMEM;
 741                                         goto cleanup;
 742                                 }
 743                                 addr = (u64)upsg->sg[i].addr[0];
 744                                 addr += ((u64)upsg->sg[i].addr[1]) << 32;
 745                                 sg_user[i] = (void __user *)(uintptr_t)addr;
 746                                 sg_list[i] = p; // save so we can clean up later
 747                                 sg_indx = i;
 748
 749                                 if (flags & SRB_DataOut) {
 750                                         if (copy_from_user(p, sg_user[i],
 751                                                 sg_count[i])){
 752                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
 753                                                 rcode = -EFAULT;
 754                                                 goto cleanup;
 755                                         }
 756                                 }
 757                                 addr = pci_map_single(dev->pdev, p,
 758                                                         sg_count[i], data_dir);
 759
 760                                 psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
 761                                 psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
 762                                 byte_count += sg_count[i];
 763                                 psg->sg[i].count = cpu_to_le32(sg_count[i]);
 764                         }
 765                 } else {
 766                         struct user_sgmap* usg;
 767                         usg = kmemdup(upsg,
 768                                       actual_fibsize - sizeof(struct aac_srb)
 769                                       + sizeof(struct sgmap), GFP_KERNEL);
 770                         if (!usg) {
 771                                 dprintk((KERN_DEBUG"aacraid: Allocation error in Raw SRB command\n"));
 772                                 rcode = -ENOMEM;
 773                                 goto cleanup;
 774                         }
 775                         actual_fibsize = actual_fibsize64;
 776
 777                         for (i = 0; i < usg->count; i++) {
 778                                 u64 addr;
 779                                 void* p;
 780
 781                                 sg_count[i] = usg->sg[i].count;
 782                                 if (sg_count[i] >
 783                                     ((dev->adapter_info.options &
 784                                      AAC_OPT_NEW_COMM) ?
 785                                       (dev->scsi_host_ptr->max_sectors << 9) :
 786                                       65536)) {
 787                                         kfree(usg);
 788                                         rcode = -EINVAL;
 789                                         goto cleanup;
 790                                 }
 791
 792                                 p = kmalloc(sg_count[i], GFP_KERNEL);
 793                                 if(!p) {
 794                                         dprintk((KERN_DEBUG "aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 795                                                 sg_count[i], i, usg->count));
 796                                         kfree(usg);
 797                                         rcode = -ENOMEM;
 798                                         goto cleanup;
 799                                 }
 800                                 sg_user[i] = (void __user *)(uintptr_t)usg->sg[i].addr;
 801                                 sg_list[i] = p; // save so we can clean up later
 802                                 sg_indx = i;
 803
 804                                 if (flags & SRB_DataOut) {
 805                                         if (copy_from_user(p, sg_user[i],
 806                                                 sg_count[i])) {
 807                                                 kfree (usg);
 808                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
 809                                                 rcode = -EFAULT;
 810                                                 goto cleanup;
 811                                         }
 812                                 }
 813                                 addr = pci_map_single(dev->pdev, p,
 814                                                         sg_count[i], data_dir);
 815
 816                                 psg->sg[i].addr[0] = cpu_to_le32(addr & 0xffffffff);
 817                                 psg->sg[i].addr[1] = cpu_to_le32(addr>>32);
 818                                 byte_count += sg_count[i];
 819                                 psg->sg[i].count = cpu_to_le32(sg_count[i]);
 820                         }
 821                         kfree (usg);
 822                 }
 823                 srbcmd->count = cpu_to_le32(byte_count);
 824                 if (user_srbcmd->sg.count)
 825                         psg->count = cpu_to_le32(sg_indx+1);
 826                 else
 827                         psg->count = 0;
 828                 status = aac_fib_send(ScsiPortCommand64, srbfib, actual_fibsize, FsaNormal, 1, 1,NULL,NULL);
 829         } else {
 830                 struct user_sgmap* upsg = &user_srbcmd->sg;
 831                 struct sgmap* psg = &srbcmd->sg;
 832
 833                 if (actual_fibsize64 == fibsize) {
 834                         struct user_sgmap64* usg = (struct user_sgmap64 *)upsg;
 835                         for (i = 0; i < upsg->count; i++) {
 836                                 uintptr_t addr;
 837                                 void* p;
 838
 839                                 sg_count[i] = usg->sg[i].count;
 840                                 if (sg_count[i] >
 841                                     ((dev->adapter_info.options &
 842                                      AAC_OPT_NEW_COMM) ?
 843                                       (dev->scsi_host_ptr->max_sectors << 9) :
 844                                       65536)) {
 845                                         rcode = -EINVAL;
 846                                         goto cleanup;
 847                                 }
 848                                 p = kmalloc(sg_count[i], GFP_KERNEL);
 849                                 if (!p) {
 850                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 851                                                 sg_count[i], i, usg->count));
 852                                         rcode = -ENOMEM;
 853                                         goto cleanup;
 854                                 }
 855                                 addr = (u64)usg->sg[i].addr[0];
 856                                 addr += ((u64)usg->sg[i].addr[1]) << 32;
 857                                 sg_user[i] = (void __user *)addr;
 858                                 sg_list[i] = p; // save so we can clean up later
 859                                 sg_indx = i;
 860
 861                                 if (flags & SRB_DataOut) {
 862                                         if (copy_from_user(p, sg_user[i],
 863                                                 sg_count[i])){
 864                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
 865                                                 rcode = -EFAULT;
 866                                                 goto cleanup;
 867                                         }
 868                                 }
 869                                 addr = pci_map_single(dev->pdev, p, usg->sg[i].count, data_dir);
 870
 871                                 psg->sg[i].addr = cpu_to_le32(addr & 0xffffffff);
 872                                 byte_count += usg->sg[i].count;
 873                                 psg->sg[i].count = cpu_to_le32(sg_count[i]);
 874                         }
 875                 } else {
 876                         for (i = 0; i < upsg->count; i++) {
 877                                 dma_addr_t addr;
 878                                 void* p;
 879
 880                                 sg_count[i] = upsg->sg[i].count;
 881                                 if (sg_count[i] >
 882                                     ((dev->adapter_info.options &
 883                                      AAC_OPT_NEW_COMM) ?
 884                                       (dev->scsi_host_ptr->max_sectors << 9) :
 885                                       65536)) {
 886                                         rcode = -EINVAL;
 887                                         goto cleanup;
 888                                 }
 889                                 p = kmalloc(sg_count[i], GFP_KERNEL);
 890                                 if (!p) {
 891                                         dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
 892                                           sg_count[i], i, upsg->count));
 893                                         rcode = -ENOMEM;
 894                                         goto cleanup;
 895                                 }
 896                                 sg_user[i] = (void __user *)(uintptr_t)upsg->sg[i].addr;
 897                                 sg_list[i] = p; // save so we can clean up later
 898                                 sg_indx = i;
 899
 900                                 if (flags & SRB_DataOut) {
 901                                         if (copy_from_user(p, sg_user[i],
 902                                                 sg_count[i])) {
 903                                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data from user\n"));
 904                                                 rcode = -EFAULT;
 905                                                 goto cleanup;
 906                                         }
 907                                 }
 908                                 addr = pci_map_single(dev->pdev, p,
 909                                         sg_count[i], data_dir);
 910
 911                                 psg->sg[i].addr = cpu_to_le32(addr);
 912                                 byte_count += sg_count[i];
 913                                 psg->sg[i].count = cpu_to_le32(sg_count[i]);
 914                         }
 915                 }
 916                 srbcmd->count = cpu_to_le32(byte_count);
 917                 if (user_srbcmd->sg.count)
 918                         psg->count = cpu_to_le32(sg_indx+1);
 919                 else
 920                         psg->count = 0;
 921                 status = aac_fib_send(ScsiPortCommand, srbfib, actual_fibsize, FsaNormal, 1, 1, NULL, NULL);
 922         }
 923
 924         if (status == -ERESTARTSYS) {
 925                 rcode = -ERESTARTSYS;
 926                 goto cleanup;
 927         }
 928
 929         if (status != 0) {
 930                 dprintk((KERN_DEBUG"aacraid: Could not send raw srb fib to hba\n"));
 931                 rcode = -ENXIO;
 932                 goto cleanup;
 933         }
 934
 935         if (flags & SRB_DataIn) {
 936                 for(i = 0 ; i <= sg_indx; i++){
 937                         if (copy_to_user(sg_user[i], sg_list[i], sg_count[i])) {
 938                                 dprintk((KERN_DEBUG"aacraid: Could not copy sg data to user\n"));
 939                                 rcode = -EFAULT;
 940                                 goto cleanup;
 941
 942                         }
 943                 }
 944         }
 945
 946         user_reply = arg + fibsize;
 947         if (is_native_device) {
 948                 struct aac_hba_resp *err =
 949                         &((struct aac_native_hba *)srbfib->hw_fib_va)->resp.err;
 950                 struct aac_srb_reply reply;
 951
 952                 memset(&reply, 0, sizeof(reply));
 953                 reply.status = ST_OK;
 954                 if (srbfib->flags & FIB_CONTEXT_FLAG_FASTRESP) {
 955                         /* fast response */
 956                         reply.srb_status = SRB_STATUS_SUCCESS;
 957                         reply.scsi_status = 0;
 958                         reply.data_xfer_length = byte_count;
 959                         reply.sense_data_size = 0;
 960                         memset(reply.sense_data, 0, AAC_SENSE_BUFFERSIZE);
 961                 } else {
 962                         reply.srb_status = err->service_response;
 963                         reply.scsi_status = err->status;
 964                         reply.data_xfer_length = byte_count -
 965                                 le32_to_cpu(err->residual_count);
 966                         reply.sense_data_size = err->sense_response_data_len;
 967                         memcpy(reply.sense_data, err->sense_response_buf,
 968                                 AAC_SENSE_BUFFERSIZE);
 969                 }
 970                 if (copy_to_user(user_reply, &reply,
 971                         sizeof(struct aac_srb_reply))) {
 972                         dprintk((KERN_DEBUG"aacraid: Copy to user failed\n"));
 973                         rcode = -EFAULT;
 974                         goto cleanup;
 975                 }
 976         } else {
 977                 struct aac_srb_reply *reply;
 978
 979                 reply = (struct aac_srb_reply *) fib_data(srbfib);
 980                 if (copy_to_user(user_reply, reply,
 981                         sizeof(struct aac_srb_reply))) {
 982                         dprintk((KERN_DEBUG"aacraid: Copy to user failed\n"));
 983                         rcode = -EFAULT;
 984                         goto cleanup;
 985                 }
 986         }
 987
 988 cleanup:
 989         kfree(user_srbcmd);
 990         if (rcode != -ERESTARTSYS) {
 991                 for (i = 0; i <= sg_indx; i++)
 992                         kfree(sg_list[i]);
 993                 aac_fib_complete(srbfib);
 994                 aac_fib_free(srbfib);
 995         }
 996
 997         return rcode;
 998 }
 999
1000 struct aac_pci_info {
1001         u32 bus;
1002         u32 slot;
1003 };
1004
1005
1006 static int aac_get_pci_info(struct aac_dev* dev, void __user *arg)
1007 {
1008         struct aac_pci_info pci_info;
1009
1010         pci_info.bus = dev->pdev->bus->number;
1011         pci_info.slot = PCI_SLOT(dev->pdev->devfn);
1012
1013         if (copy_to_user(arg, &pci_info, sizeof(struct aac_pci_info))) {
1014                 dprintk((KERN_DEBUG "aacraid: Could not copy pci info\n"));
1015                 return -EFAULT;
1016         }
1017         return 0;
1018 }
1019
1020 static int aac_get_hba_info(struct aac_dev *dev, void __user *arg)
1021 {
1022         struct aac_hba_info hbainfo;
1023
1024         memset(&hbainfo, 0, sizeof(hbainfo));
1025         hbainfo.adapter_number          = (u8) dev->id;
1026         hbainfo.system_io_bus_number    = dev->pdev->bus->number;
1027         hbainfo.device_number           = (dev->pdev->devfn >> 3);
1028         hbainfo.function_number         = (dev->pdev->devfn & 0x0007);
1029
1030         hbainfo.vendor_id               = dev->pdev->vendor;
1031         hbainfo.device_id               = dev->pdev->device;
1032         hbainfo.sub_vendor_id           = dev->pdev->subsystem_vendor;
1033         hbainfo.sub_system_id           = dev->pdev->subsystem_device;
1034
1035         if (copy_to_user(arg, &hbainfo, sizeof(struct aac_hba_info))) {
1036                 dprintk((KERN_DEBUG "aacraid: Could not copy hba info\n"));
1037                 return -EFAULT;
1038         }
1039
1040         return 0;
1041 }
1042
1043 struct aac_reset_iop {
1044         u8      reset_type;
1045 };
1046
1047 static int aac_send_reset_adapter(struct aac_dev *dev, void __user *arg)
1048 {
1049         struct aac_reset_iop reset;
1050         int retval;
1051
1052         if (copy_from_user((void *)&reset, arg, sizeof(struct aac_reset_iop)))
1053                 return -EFAULT;
1054
1055         dev->adapter_shutdown = 1;
1056
1057         mutex_unlock(&dev->ioctl_mutex);
1058         retval = aac_reset_adapter(dev, 0, reset.reset_type);
1059         mutex_lock(&dev->ioctl_mutex);
1060
1061         return retval;
1062 }
1063
1064 int aac_do_ioctl(struct aac_dev * dev, int cmd, void __user *arg)
1065 {
1066         int status;
1067
1068         mutex_lock(&dev->ioctl_mutex);
1069
1070         if (dev->adapter_shutdown) {
1071                 status = -EACCES;
1072                 goto cleanup;
1073         }
1074
1075         /*
1076          *      HBA gets first crack
1077          */
1078
1079         status = aac_dev_ioctl(dev, cmd, arg);
1080         if (status != -ENOTTY)
1081                 goto cleanup;
1082
1083         switch (cmd) {
1084         case FSACTL_MINIPORT_REV_CHECK:
1085                 status = check_revision(dev, arg);
1086                 break;
1087         case FSACTL_SEND_LARGE_FIB:
1088         case FSACTL_SENDFIB:
1089                 status = ioctl_send_fib(dev, arg);
1090                 break;
1091         case FSACTL_OPEN_GET_ADAPTER_FIB:
1092                 status = open_getadapter_fib(dev, arg);
1093                 break;
1094         case FSACTL_GET_NEXT_ADAPTER_FIB:
1095                 status = next_getadapter_fib(dev, arg);
1096                 break;
1097         case FSACTL_CLOSE_GET_ADAPTER_FIB:
1098                 status = close_getadapter_fib(dev, arg);
1099                 break;
1100         case FSACTL_SEND_RAW_SRB:
1101                 status = aac_send_raw_srb(dev,arg);
1102                 break;
1103         case FSACTL_GET_PCI_INFO:
1104                 status = aac_get_pci_info(dev,arg);
1105                 break;
1106         case FSACTL_GET_HBA_INFO:
1107                 status = aac_get_hba_info(dev, arg);
1108                 break;
1109         case FSACTL_RESET_IOP:
1110                 status = aac_send_reset_adapter(dev, arg);
1111                 break;
1112
1113         default:
1114                 status = -ENOTTY;
1115                 break;
1116         }
1117
1118 cleanup:
1119         mutex_unlock(&dev->ioctl_mutex);
1120
1121         return status;
1122 }
1123