drivers/staging/ft1000/ft1000-usb/ft1000_chdev.c

   1 //---------------------------------------------------------------------------
   2 // FT1000 driver for Flarion Flash OFDM NIC Device
   3 //
   4 // Copyright (C) 2006 Flarion Technologies, All rights reserved.
   5 //
   6 // This program is free software; you can redistribute it and/or modify it
   7 // under the terms of the GNU General Public License as published by the Free
   8 // Software Foundation; either version 2 of the License, or (at your option) any
   9 // later version. This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  11 // or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12 // more details. You should have received a copy of the GNU General Public
  13 // License along with this program; if not, write to the
  14 // Free Software Foundation, Inc., 59 Temple Place -
  15 // Suite 330, Boston, MA 02111-1307, USA.
  16 //---------------------------------------------------------------------------
  17 //
  18 // File:         ft1000_chdev.c
  19 //
  20 // Description:  Custom character device dispatch routines.
  21 //
  22 // History:
  23 // 8/29/02    Whc                Ported to Linux.
  24 // 6/05/06    Whc                Porting to Linux 2.6.9
  25 //
  26 //---------------------------------------------------------------------------
  27 #include <linux/module.h>
  28 #include <linux/kernel.h>
  29 #include <linux/sched.h>
  30 #include <linux/errno.h>
  31 #include <linux/poll.h>
  32 #include <linux/netdevice.h>
  33 #include <linux/delay.h>
  34
  35 #include <linux/ioctl.h>
  36 #include <linux/debugfs.h>
  37 #include "ft1000_usb.h"
  38
  39 static int ft1000_flarion_cnt = 0;
  40
  41 static int ft1000_open (struct inode *inode, struct file *file);
  42 static unsigned int ft1000_poll_dev(struct file *file, poll_table *wait);
  43 static long ft1000_ioctl(struct file *file, unsigned int command,
  44                            unsigned long argument);
  45 static int ft1000_release (struct inode *inode, struct file *file);
  46
  47 // List to free receive command buffer pool
  48 struct list_head freercvpool;
  49
  50 // lock to arbitrate free buffer list for receive command data
  51 spinlock_t free_buff_lock;
  52
  53 int numofmsgbuf = 0;
  54
  55 //
  56 // Table of entry-point routines for char device
  57 //
  58 static struct file_operations ft1000fops =
  59 {
  60         .unlocked_ioctl = ft1000_ioctl,
  61         .poll           = ft1000_poll_dev,
  62         .open           = ft1000_open,
  63         .release        = ft1000_release,
  64         .llseek         = no_llseek,
  65 };
  66
  67 //---------------------------------------------------------------------------
  68 // Function:    ft1000_get_buffer
  69 //
  70 // Parameters:
  71 //
  72 // Returns:
  73 //
  74 // Description:
  75 //
  76 // Notes:
  77 //
  78 //---------------------------------------------------------------------------
  79 struct dpram_blk *ft1000_get_buffer(struct list_head *bufflist)
  80 {
  81     unsigned long flags;
  82         struct dpram_blk *ptr;
  83
  84     spin_lock_irqsave(&free_buff_lock, flags);
  85     // Check if buffer is available
  86     if ( list_empty(bufflist) ) {
  87         DEBUG("ft1000_get_buffer:  No more buffer - %d\n", numofmsgbuf);
  88         ptr = NULL;
  89     }
  90     else {
  91         numofmsgbuf--;
  92         ptr = list_entry(bufflist->next, struct dpram_blk, list);
  93         list_del(&ptr->list);
  94         //DEBUG("ft1000_get_buffer: number of free msg buffers = %d\n", numofmsgbuf);
  95     }
  96     spin_unlock_irqrestore(&free_buff_lock, flags);
  97
  98     return ptr;
  99 }
 100
 101
 102
 103
 104 //---------------------------------------------------------------------------
 105 // Function:    ft1000_free_buffer
 106 //
 107 // Parameters:
 108 //
 109 // Returns:
 110 //
 111 // Description:
 112 //
 113 // Notes:
 114 //
 115 //---------------------------------------------------------------------------
 116 void ft1000_free_buffer(struct dpram_blk *pdpram_blk, struct list_head *plist)
 117 {
 118     unsigned long flags;
 119
 120     spin_lock_irqsave(&free_buff_lock, flags);
 121     // Put memory back to list
 122     list_add_tail(&pdpram_blk->list, plist);
 123     numofmsgbuf++;
 124     //DEBUG("ft1000_free_buffer: number of free msg buffers = %d\n", numofmsgbuf);
 125     spin_unlock_irqrestore(&free_buff_lock, flags);
 126 }
 127
 128 //---------------------------------------------------------------------------
 129 // Function:    ft1000_CreateDevice
 130 //
 131 // Parameters:  dev - pointer to adapter object
 132 //
 133 // Returns:     0 if successful
 134 //
 135 // Description: Creates a private char device.
 136 //
 137 // Notes:       Only called by init_module().
 138 //
 139 //---------------------------------------------------------------------------
 140 int ft1000_create_dev(struct ft1000_device *dev)
 141 {
 142         struct ft1000_info *info = netdev_priv(dev->net);
 143     int result;
 144     int i;
 145         struct dentry *dir, *file;
 146         struct ft1000_debug_dirs *tmp;
 147
 148     // make a new device name
 149     sprintf(info->DeviceName, "%s%d", "FT1000_", info->CardNumber);
 150
 151     DEBUG("ft1000_CreateDevice: number of instance = %d\n", ft1000_flarion_cnt);
 152     DEBUG("DeviceCreated = %x\n", info->DeviceCreated);
 153
 154     if (info->DeviceCreated)
 155     {
 156         DEBUG("ft1000_CreateDevice: \"%s\" already registered\n", info->DeviceName);
 157         return -EIO;
 158     }
 159
 160
 161     // register the device
 162     DEBUG("ft1000_CreateDevice: \"%s\" device registration\n", info->DeviceName);
 163
 164         tmp = kmalloc(sizeof(struct ft1000_debug_dirs), GFP_KERNEL);
 165         if (tmp == NULL) {
 166                 result = -1;
 167                 goto fail;
 168         }
 169
 170         dir = debugfs_create_dir(info->DeviceName, 0);
 171         if (IS_ERR(dir)) {
 172                 result = PTR_ERR(dir);
 173                 goto debug_dir_fail;
 174         }
 175
 176         file = debugfs_create_file("device", S_IRUGO | S_IWUGO, dir,
 177                                         NULL, &ft1000fops);
 178         if (IS_ERR(file)) {
 179                 result = PTR_ERR(file);
 180                 goto debug_file_fail;
 181         }
 182
 183         tmp->dent = dir;
 184         tmp->file = file;
 185         tmp->int_number = info->CardNumber;
 186         list_add(&(tmp->list), &(info->nodes.list));
 187
 188     DEBUG("ft1000_CreateDevice: registered char device \"%s\"\n", info->DeviceName);
 189
 190     // initialize application information
 191     info->appcnt = 0;
 192     for (i=0; i<MAX_NUM_APP; i++) {
 193         info->app_info[i].nTxMsg = 0;
 194         info->app_info[i].nRxMsg = 0;
 195         info->app_info[i].nTxMsgReject = 0;
 196         info->app_info[i].nRxMsgMiss = 0;
 197         info->app_info[i].fileobject = NULL;
 198         info->app_info[i].app_id = i+1;
 199         info->app_info[i].DspBCMsgFlag = 0;
 200         info->app_info[i].NumOfMsg = 0;
 201         init_waitqueue_head(&info->app_info[i].wait_dpram_msg);
 202         INIT_LIST_HEAD (&info->app_info[i].app_sqlist);
 203     }
 204
 205     info->DeviceCreated = TRUE;
 206     ft1000_flarion_cnt++;
 207
 208         return 0;
 209
 210 debug_file_fail:
 211         debugfs_remove(dir);
 212 debug_dir_fail:
 213         kfree(tmp);
 214 fail:
 215         return result;
 216 }
 217
 218 //---------------------------------------------------------------------------
 219 // Function:    ft1000_DestroyDeviceDEBUG
 220 //
 221 // Parameters:  dev - pointer to adapter object
 222 //
 223 // Description: Destroys a private char device.
 224 //
 225 // Notes:       Only called by cleanup_module().
 226 //
 227 //---------------------------------------------------------------------------
 228 void ft1000_destroy_dev(struct net_device *dev)
 229 {
 230         struct ft1000_info *info = netdev_priv(dev);
 231                 int i;
 232         struct dpram_blk *pdpram_blk;
 233         struct dpram_blk *ptr;
 234         struct list_head *pos, *q;
 235         struct ft1000_debug_dirs *dir;
 236
 237     DEBUG("ft1000_chdev:ft1000_DestroyDevice called\n");
 238
 239
 240
 241     if (info->DeviceCreated)
 242         {
 243         ft1000_flarion_cnt--;
 244                 list_for_each_safe(pos, q, &info->nodes.list) {
 245                         dir = list_entry(pos, struct ft1000_debug_dirs, list);
 246                         if (dir->int_number == info->CardNumber) {
 247                                 debugfs_remove(dir->file);
 248                                 debugfs_remove(dir->dent);
 249                                 list_del(pos);
 250                                 kfree(dir);
 251                         }
 252                 }
 253                 DEBUG("ft1000_DestroyDevice: unregistered device \"%s\"\n",
 254                                            info->DeviceName);
 255
 256         // Make sure we free any memory reserve for slow Queue
 257         for (i=0; i<MAX_NUM_APP; i++) {
 258             while (list_empty(&info->app_info[i].app_sqlist) == 0) {
 259                 pdpram_blk = list_entry(info->app_info[i].app_sqlist.next, struct dpram_blk, list);
 260                 list_del(&pdpram_blk->list);
 261                 ft1000_free_buffer(pdpram_blk, &freercvpool);
 262
 263             }
 264             wake_up_interruptible(&info->app_info[i].wait_dpram_msg);
 265         }
 266
 267         // Remove buffer allocated for receive command data
 268         if (ft1000_flarion_cnt == 0) {
 269             while (list_empty(&freercvpool) == 0) {
 270                 ptr = list_entry(freercvpool.next, struct dpram_blk, list);
 271                 list_del(&ptr->list);
 272                 kfree(ptr->pbuffer);
 273                 kfree(ptr);
 274             }
 275         }
 276                 info->DeviceCreated = FALSE;
 277         }
 278
 279
 280 }
 281
 282 //---------------------------------------------------------------------------
 283 // Function:    ft1000_open
 284 //
 285 // Parameters:
 286 //
 287 // Description:
 288 //
 289 // Notes:
 290 //
 291 //---------------------------------------------------------------------------
 292 static int ft1000_open (struct inode *inode, struct file *file)
 293 {
 294         struct ft1000_info *info;
 295         struct ft1000_device *dev = (struct ft1000_device *)inode->i_private;
 296     int i,num;
 297
 298     DEBUG("ft1000_open called\n");
 299     num = (MINOR(inode->i_rdev) & 0xf);
 300     DEBUG("ft1000_open: minor number=%d\n", num);
 301
 302         info = file->private_data = netdev_priv(dev->net);
 303
 304     DEBUG("f_owner = %p number of application = %d\n", (&file->f_owner), info->appcnt );
 305
 306     // Check if maximum number of application exceeded
 307     if (info->appcnt > MAX_NUM_APP) {
 308         DEBUG("Maximum number of application exceeded\n");
 309         return -EACCES;
 310     }
 311
 312     // Search for available application info block
 313     for (i=0; i<MAX_NUM_APP; i++) {
 314         if ( (info->app_info[i].fileobject == NULL) ) {
 315             break;
 316         }
 317     }
 318
 319     // Fail due to lack of application info block
 320     if (i == MAX_NUM_APP) {
 321         DEBUG("Could not find an application info block\n");
 322         return -EACCES;
 323     }
 324
 325     info->appcnt++;
 326     info->app_info[i].fileobject = &file->f_owner;
 327     info->app_info[i].nTxMsg = 0;
 328     info->app_info[i].nRxMsg = 0;
 329     info->app_info[i].nTxMsgReject = 0;
 330     info->app_info[i].nRxMsgMiss = 0;
 331
 332         nonseekable_open(inode, file);
 333     return 0;
 334 }
 335
 336
 337 //---------------------------------------------------------------------------
 338 // Function:    ft1000_poll_dev
 339 //
 340 // Parameters:
 341 //
 342 // Description:
 343 //
 344 // Notes:
 345 //
 346 //---------------------------------------------------------------------------
 347
 348 static unsigned int ft1000_poll_dev(struct file *file, poll_table *wait)
 349 {
 350     struct net_device *dev = file->private_data;
 351         struct ft1000_info *info;
 352     int i;
 353
 354     //DEBUG("ft1000_poll_dev called\n");
 355     if (ft1000_flarion_cnt == 0) {
 356         DEBUG("FT1000:ft1000_poll_dev called when ft1000_flarion_cnt is zero\n");
 357         return (-EBADF);
 358     }
 359
 360         info = netdev_priv(dev);
 361
 362     // Search for matching file object
 363     for (i=0; i<MAX_NUM_APP; i++) {
 364         if ( info->app_info[i].fileobject == &file->f_owner) {
 365             //DEBUG("FT1000:ft1000_ioctl: Message is for AppId = %d\n", info->app_info[i].app_id);
 366             break;
 367         }
 368     }
 369
 370     // Could not find application info block
 371     if (i == MAX_NUM_APP) {
 372         DEBUG("FT1000:ft1000_ioctl:Could not find application info block\n");
 373         return ( -EACCES );
 374     }
 375
 376     if (list_empty(&info->app_info[i].app_sqlist) == 0) {
 377         DEBUG("FT1000:ft1000_poll_dev:Message detected in slow queue\n");
 378         return(POLLIN | POLLRDNORM | POLLPRI);
 379     }
 380
 381     poll_wait (file, &info->app_info[i].wait_dpram_msg, wait);
 382     //DEBUG("FT1000:ft1000_poll_dev:Polling for data from DSP\n");
 383
 384     return (0);
 385 }
 386
 387 //---------------------------------------------------------------------------
 388 // Function:    ft1000_ioctl
 389 //
 390 // Parameters:
 391 //
 392 // Description:
 393 //
 394 // Notes:
 395 //
 396 //---------------------------------------------------------------------------
 397 static long ft1000_ioctl (struct file *file, unsigned int command,
 398                            unsigned long argument)
 399 {
 400     void __user *argp = (void __user *)argument;
 401     struct net_device *dev;
 402         struct ft1000_info *info;
 403     struct ft1000_device *ft1000dev;
 404     int result=0;
 405     int cmd;
 406     int i;
 407     u16 tempword;
 408     unsigned long flags;
 409     struct timeval tv;
 410     IOCTL_GET_VER get_ver_data;
 411     IOCTL_GET_DSP_STAT get_stat_data;
 412     u8 ConnectionMsg[] = {0x00,0x44,0x10,0x20,0x80,0x00,0x00,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x93,0x64,
 413                           0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x05,0x00,0x00,0x00,0x0a,
 414                           0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 415                           0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x12,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 416                           0x00,0x00,0x02,0x37,0x00,0x00,0x00,0x08,0x00,0x00,0x00,0x01,0x00,0x01,0x7f,0x00,
 417                           0x00,0x01,0x00,0x00};
 418
 419     unsigned short ledStat=0;
 420     unsigned short conStat=0;
 421
 422     //DEBUG("ft1000_ioctl called\n");
 423
 424     if (ft1000_flarion_cnt == 0) {
 425         DEBUG("FT1000:ft1000_ioctl called when ft1000_flarion_cnt is zero\n");
 426         return (-EBADF);
 427     }
 428
 429     //DEBUG("FT1000:ft1000_ioctl:command = 0x%x argument = 0x%8x\n", command, (u32)argument);
 430
 431     dev = file->private_data;
 432         info = netdev_priv(dev);
 433     ft1000dev = info->pFt1000Dev;
 434     cmd = _IOC_NR(command);
 435     //DEBUG("FT1000:ft1000_ioctl:cmd = 0x%x\n", cmd);
 436
 437     // process the command
 438     switch (cmd) {
 439     case IOCTL_REGISTER_CMD:
 440             DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_REGISTER called\n");
 441             result = get_user(tempword, (__u16 __user*)argp);
 442             if (result) {
 443                 DEBUG("result = %d failed to get_user\n", result);
 444                 break;
 445             }
 446             if (tempword == DSPBCMSGID) {
 447                 // Search for matching file object
 448                 for (i=0; i<MAX_NUM_APP; i++) {
 449                     if ( info->app_info[i].fileobject == &file->f_owner) {
 450                         info->app_info[i].DspBCMsgFlag = 1;
 451                         DEBUG("FT1000:ft1000_ioctl:Registered for broadcast messages\n");
 452                         break;
 453                     }
 454                 }
 455             }
 456             break;
 457
 458     case IOCTL_GET_VER_CMD:
 459         DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_GET_VER called\n");
 460
 461         get_ver_data.drv_ver = FT1000_DRV_VER;
 462
 463         if (copy_to_user(argp, &get_ver_data, sizeof(get_ver_data)) ) {
 464             DEBUG("FT1000:ft1000_ioctl: copy fault occurred\n");
 465             result = -EFAULT;
 466             break;
 467         }
 468
 469         DEBUG("FT1000:ft1000_ioctl:driver version = 0x%x\n",(unsigned int)get_ver_data.drv_ver);
 470
 471         break;
 472     case IOCTL_CONNECT:
 473         // Connect Message
 474         DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_CONNECT\n");
 475         ConnectionMsg[79] = 0xfc;
 476                            CardSendCommand(ft1000dev, (unsigned short *)ConnectionMsg, 0x4c);
 477
 478         break;
 479     case IOCTL_DISCONNECT:
 480         // Disconnect Message
 481         DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_DISCONNECT\n");
 482         ConnectionMsg[79] = 0xfd;
 483                            CardSendCommand(ft1000dev, (unsigned short *)ConnectionMsg, 0x4c);
 484         break;
 485     case IOCTL_GET_DSP_STAT_CMD:
 486         //DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_GET_DSP_STAT called\n");
 487         memset(&get_stat_data, 0, sizeof(get_stat_data));
 488         memcpy(get_stat_data.DspVer, info->DspVer, DSPVERSZ);
 489         memcpy(get_stat_data.HwSerNum, info->HwSerNum, HWSERNUMSZ);
 490         memcpy(get_stat_data.Sku, info->Sku, SKUSZ);
 491         memcpy(get_stat_data.eui64, info->eui64, EUISZ);
 492
 493             if (info->ProgConStat != 0xFF) {
 494                 ft1000_read_dpram16(ft1000dev, FT1000_MAG_DSP_LED, (u8 *)&ledStat, FT1000_MAG_DSP_LED_INDX);
 495                 get_stat_data.LedStat = ntohs(ledStat);
 496                 DEBUG("FT1000:ft1000_ioctl: LedStat = 0x%x\n", get_stat_data.LedStat);
 497                 ft1000_read_dpram16(ft1000dev, FT1000_MAG_DSP_CON_STATE, (u8 *)&conStat, FT1000_MAG_DSP_CON_STATE_INDX);
 498                 get_stat_data.ConStat = ntohs(conStat);
 499                 DEBUG("FT1000:ft1000_ioctl: ConStat = 0x%x\n", get_stat_data.ConStat);
 500             }
 501             else {
 502                 get_stat_data.ConStat = 0x0f;
 503             }
 504
 505
 506         get_stat_data.nTxPkts = info->stats.tx_packets;
 507         get_stat_data.nRxPkts = info->stats.rx_packets;
 508         get_stat_data.nTxBytes = info->stats.tx_bytes;
 509         get_stat_data.nRxBytes = info->stats.rx_bytes;
 510         do_gettimeofday ( &tv );
 511         get_stat_data.ConTm = (u32)(tv.tv_sec - info->ConTm);
 512         DEBUG("Connection Time = %d\n", (int)get_stat_data.ConTm);
 513         if (copy_to_user(argp, &get_stat_data, sizeof(get_stat_data)) ) {
 514             DEBUG("FT1000:ft1000_ioctl: copy fault occurred\n");
 515             result = -EFAULT;
 516             break;
 517         }
 518         DEBUG("ft1000_chioctl: GET_DSP_STAT succeed\n");
 519         break;
 520     case IOCTL_SET_DPRAM_CMD:
 521         {
 522             IOCTL_DPRAM_BLK *dpram_data = NULL;
 523             //IOCTL_DPRAM_COMMAND dpram_command;
 524             u16 qtype;
 525             u16 msgsz;
 526                 struct pseudo_hdr *ppseudo_hdr;
 527             u16 *pmsg;
 528             u16 total_len;
 529             u16 app_index;
 530             u16 status;
 531
 532             //DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_SET_DPRAM called\n");
 533
 534
 535             if (ft1000_flarion_cnt == 0) {
 536                 return (-EBADF);
 537             }
 538
 539             if (info->DrvMsgPend) {
 540                 return (-ENOTTY);
 541             }
 542
 543             if ( (info->DspAsicReset) || (info->fProvComplete == 0) ) {
 544                 return (-EACCES);
 545             }
 546
 547             info->fAppMsgPend = 1;
 548
 549             if (info->CardReady) {
 550
 551                //DEBUG("FT1000:ft1000_ioctl: try to SET_DPRAM \n");
 552
 553                 // Get the length field to see how many bytes to copy
 554                 result = get_user(msgsz, (__u16 __user *)argp);
 555                 msgsz = ntohs (msgsz);
 556                 //DEBUG("FT1000:ft1000_ioctl: length of message = %d\n", msgsz);
 557
 558                 if (msgsz > MAX_CMD_SQSIZE) {
 559                     DEBUG("FT1000:ft1000_ioctl: bad message length = %d\n", msgsz);
 560                     result = -EINVAL;
 561                     break;
 562                 }
 563
 564                 result = -ENOMEM;
 565                 dpram_data = kmalloc(msgsz + 2, GFP_KERNEL);
 566                 if (!dpram_data)
 567                         break;
 568
 569                 if ( copy_from_user(dpram_data, argp, msgsz+2) ) {
 570                     DEBUG("FT1000:ft1000_ChIoctl: copy fault occurred\n");
 571                     result = -EFAULT;
 572                 }
 573                 else {
 574                     // Check if this message came from a registered application
 575                     for (i=0; i<MAX_NUM_APP; i++) {
 576                         if ( info->app_info[i].fileobject == &file->f_owner) {
 577                             break;
 578                         }
 579                     }
 580                     if (i==MAX_NUM_APP) {
 581                         DEBUG("FT1000:No matching application fileobject\n");
 582                         result = -EINVAL;
 583                         kfree(dpram_data);
 584                         break;
 585                     }
 586                     app_index = i;
 587
 588                     // Check message qtype type which is the lower byte within qos_class
 589                     qtype = ntohs(dpram_data->pseudohdr.qos_class) & 0xff;
 590                     //DEBUG("FT1000_ft1000_ioctl: qtype = %d\n", qtype);
 591                     if (qtype) {
 592                     }
 593                     else {
 594                         // Put message into Slow Queue
 595                         // Only put a message into the DPRAM if msg doorbell is available
 596                         status = ft1000_read_register(ft1000dev, &tempword, FT1000_REG_DOORBELL);
 597                         //DEBUG("FT1000_ft1000_ioctl: READ REGISTER tempword=%x\n", tempword);
 598                         if (tempword & FT1000_DB_DPRAM_TX) {
 599                             // Suspend for 2ms and try again due to DSP doorbell busy
 600                             mdelay(2);
 601                             status = ft1000_read_register(ft1000dev, &tempword, FT1000_REG_DOORBELL);
 602                             if (tempword & FT1000_DB_DPRAM_TX) {
 603                                 // Suspend for 1ms and try again due to DSP doorbell busy
 604                                 mdelay(1);
 605                                 status = ft1000_read_register(ft1000dev, &tempword, FT1000_REG_DOORBELL);
 606                                 if (tempword & FT1000_DB_DPRAM_TX) {
 607                                     status = ft1000_read_register(ft1000dev, &tempword, FT1000_REG_DOORBELL);
 608                                     if (tempword & FT1000_DB_DPRAM_TX) {
 609                                         // Suspend for 3ms and try again due to DSP doorbell busy
 610                                         mdelay(3);
 611                                         status = ft1000_read_register(ft1000dev, &tempword, FT1000_REG_DOORBELL);
 612                                         if (tempword & FT1000_DB_DPRAM_TX) {
 613                                             DEBUG("FT1000:ft1000_ioctl:Doorbell not available\n");
 614                                             result = -ENOTTY;
 615                                                 kfree(dpram_data);
 616                                             break;
 617                                         }
 618                                     }
 619                                 }
 620                             }
 621                         }
 622
 623                         //DEBUG("FT1000_ft1000_ioctl: finished reading register\n");
 624
 625                         // Make sure we are within the limits of the slow queue memory limitation
 626                         if ( (msgsz < MAX_CMD_SQSIZE) && (msgsz > PSEUDOSZ) ) {
 627                             // Need to put sequence number plus new checksum for message
 628                             pmsg = (u16 *)&dpram_data->pseudohdr;
 629                                 ppseudo_hdr = (struct pseudo_hdr *)pmsg;
 630                             total_len = msgsz+2;
 631                             if (total_len & 0x1) {
 632                                 total_len++;
 633                             }
 634
 635                             // Insert slow queue sequence number
 636                             ppseudo_hdr->seq_num = info->squeseqnum++;
 637                             ppseudo_hdr->portsrc = info->app_info[app_index].app_id;
 638                             // Calculate new checksum
 639                             ppseudo_hdr->checksum = *pmsg++;
 640                             //DEBUG("checksum = 0x%x\n", ppseudo_hdr->checksum);
 641                             for (i=1; i<7; i++) {
 642                                 ppseudo_hdr->checksum ^= *pmsg++;
 643                                 //DEBUG("checksum = 0x%x\n", ppseudo_hdr->checksum);
 644                             }
 645                             pmsg++;
 646                                 ppseudo_hdr = (struct pseudo_hdr *)pmsg;
 647                            CardSendCommand(ft1000dev,(unsigned short*)dpram_data,total_len+2);
 648
 649
 650                             info->app_info[app_index].nTxMsg++;
 651                         }
 652                         else {
 653                             result = -EINVAL;
 654                         }
 655                     }
 656                 }
 657             }
 658             else {
 659                 DEBUG("FT1000:ft1000_ioctl: Card not ready take messages\n");
 660                 result = -EACCES;
 661             }
 662             kfree(dpram_data);
 663
 664         }
 665         break;
 666     case IOCTL_GET_DPRAM_CMD:
 667         {
 668                 struct dpram_blk *pdpram_blk;
 669             IOCTL_DPRAM_BLK __user *pioctl_dpram;
 670             int msglen;
 671
 672             //DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_GET_DPRAM called\n");
 673
 674             if (ft1000_flarion_cnt == 0) {
 675                 return (-EBADF);
 676             }
 677
 678             // Search for matching file object
 679             for (i=0; i<MAX_NUM_APP; i++) {
 680                 if ( info->app_info[i].fileobject == &file->f_owner) {
 681                     //DEBUG("FT1000:ft1000_ioctl: Message is for AppId = %d\n", info->app_info[i].app_id);
 682                     break;
 683                 }
 684             }
 685
 686             // Could not find application info block
 687             if (i == MAX_NUM_APP) {
 688                 DEBUG("FT1000:ft1000_ioctl:Could not find application info block\n");
 689                 result = -EBADF;
 690                 break;
 691             }
 692
 693             result = 0;
 694             pioctl_dpram = argp;
 695             if (list_empty(&info->app_info[i].app_sqlist) == 0) {
 696                 //DEBUG("FT1000:ft1000_ioctl:Message detected in slow queue\n");
 697                 spin_lock_irqsave(&free_buff_lock, flags);
 698                 pdpram_blk = list_entry(info->app_info[i].app_sqlist.next, struct dpram_blk, list);
 699                 list_del(&pdpram_blk->list);
 700                 info->app_info[i].NumOfMsg--;
 701                 //DEBUG("FT1000:ft1000_ioctl:NumOfMsg for app %d = %d\n", i, info->app_info[i].NumOfMsg);
 702                 spin_unlock_irqrestore(&free_buff_lock, flags);
 703                 msglen = ntohs(*(u16 *)pdpram_blk->pbuffer) + PSEUDOSZ;
 704                 result = get_user(msglen, &pioctl_dpram->total_len);
 705                 if (result)
 706                         break;
 707                 msglen = htons(msglen);
 708                 //DEBUG("FT1000:ft1000_ioctl:msg length = %x\n", msglen);
 709                 if(copy_to_user (&pioctl_dpram->pseudohdr, pdpram_blk->pbuffer, msglen))
 710                                 {
 711                                         DEBUG("FT1000:ft1000_ioctl: copy fault occurred\n");
 712                         result = -EFAULT;
 713                         break;
 714                                 }
 715
 716                 ft1000_free_buffer(pdpram_blk, &freercvpool);
 717                 result = msglen;
 718             }
 719             //DEBUG("FT1000:ft1000_ioctl: IOCTL_FT1000_GET_DPRAM no message\n");
 720         }
 721         break;
 722
 723     default:
 724         DEBUG("FT1000:ft1000_ioctl:unknown command: 0x%x\n", command);
 725         result = -ENOTTY;
 726         break;
 727     }
 728     info->fAppMsgPend = 0;
 729     return result;
 730 }
 731
 732 //---------------------------------------------------------------------------
 733 // Function:    ft1000_release
 734 //
 735 // Parameters:
 736 //
 737 // Description:
 738 //
 739 // Notes:
 740 //
 741 //---------------------------------------------------------------------------
 742 static int ft1000_release (struct inode *inode, struct file *file)
 743 {
 744         struct ft1000_info *info;
 745     struct net_device *dev;
 746     int i;
 747         struct dpram_blk *pdpram_blk;
 748
 749     DEBUG("ft1000_release called\n");
 750
 751     dev = file->private_data;
 752         info = netdev_priv(dev);
 753
 754     if (ft1000_flarion_cnt == 0) {
 755         info->appcnt--;
 756         return (-EBADF);
 757     }
 758
 759     // Search for matching file object
 760     for (i=0; i<MAX_NUM_APP; i++) {
 761         if ( info->app_info[i].fileobject == &file->f_owner) {
 762             //DEBUG("FT1000:ft1000_ioctl: Message is for AppId = %d\n", info->app_info[i].app_id);
 763             break;
 764         }
 765     }
 766
 767     if (i==MAX_NUM_APP)
 768             return 0;
 769
 770     while (list_empty(&info->app_info[i].app_sqlist) == 0) {
 771         DEBUG("Remove and free memory queue up on slow queue\n");
 772         pdpram_blk = list_entry(info->app_info[i].app_sqlist.next, struct dpram_blk, list);
 773         list_del(&pdpram_blk->list);
 774         ft1000_free_buffer(pdpram_blk, &freercvpool);
 775     }
 776
 777     // initialize application information
 778     info->appcnt--;
 779     DEBUG("ft1000_chdev:%s:appcnt = %d\n", __FUNCTION__, info->appcnt);
 780     info->app_info[i].fileobject = NULL;
 781
 782     return 0;
 783 }
 784