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