drivers/char/mwave/mwavedd.c

   1 /*
   2 *
   3 * mwavedd.c -- mwave device driver
   4 *
   5 *
   6 * Written By: Mike Sullivan IBM Corporation
   7 *
   8 * Copyright (C) 1999 IBM Corporation
   9 *
  10 * This program is free software; you can redistribute it and/or modify
  11 * it under the terms of the GNU General Public License as published by
  12 * the Free Software Foundation; either version 2 of the License, or
  13 * (at your option) any later version.
  14 *
  15 * This program is distributed in the hope that it will be useful,
  16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 * GNU General Public License for more details.
  19 *
  20 * NO WARRANTY
  21 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  22 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  23 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  24 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  25 * solely responsible for determining the appropriateness of using and
  26 * distributing the Program and assumes all risks associated with its
  27 * exercise of rights under this Agreement, including but not limited to
  28 * the risks and costs of program errors, damage to or loss of data,
  29 * programs or equipment, and unavailability or interruption of operations.
  30 *
  31 * DISCLAIMER OF LIABILITY
  32 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  33 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  34 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  35 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  36 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  37 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  38 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  39 *
  40 * You should have received a copy of the GNU General Public License
  41 * along with this program; if not, write to the Free Software
  42 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  43 *
  44 *
  45 * 10/23/2000 - Alpha Release
  46 *       First release to the public
  47 */
  48
  49 #include <linux/version.h>
  50 #include <linux/module.h>
  51 #include <linux/kernel.h>
  52 #include <linux/fs.h>
  53 #include <linux/init.h>
  54 #include <linux/major.h>
  55 #include <linux/miscdevice.h>
  56 #include <linux/proc_fs.h>
  57 #include <linux/serial.h>
  58 #include <linux/sched.h>
  59 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
  60 #include <linux/spinlock.h>
  61 #else
  62 #include <asm/spinlock.h>
  63 #endif
  64 #include <linux/delay.h>
  65 #include "smapi.h"
  66 #include "mwavedd.h"
  67 #include "3780i.h"
  68 #include "tp3780i.h"
  69
  70 #ifndef __exit
  71 #define __exit
  72 #endif
  73
  74 MODULE_DESCRIPTION("3780i Advanced Communications Processor (Mwave) driver");
  75 MODULE_AUTHOR("Mike Sullivan and Paul Schroeder");
  76 MODULE_LICENSE("GPL");
  77
  78 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
  79 static int mwave_get_info(char *buf, char **start, off_t offset, int len);
  80 #else
  81 static int mwave_read_proc(char *buf, char **start, off_t offset, int xlen, int unused);
  82 static struct proc_dir_entry mwave_proc = {
  83         0,                      /* unsigned short low_ino */
  84         5,                      /* unsigned short namelen */
  85         "mwave",                /* const char *name */
  86         S_IFREG | S_IRUGO,      /* mode_t mode */
  87         1,                      /* nlink_t nlink */
  88         0,                      /* uid_t uid */
  89         0,                      /* gid_t gid */
  90         0,                      /* unsigned long size */
  91         NULL,                   /* struct inode_operations *ops */
  92         &mwave_read_proc        /* int (*get_info) (...) */
  93 };
  94 #endif
  95
  96 /*
  97 * These parameters support the setting of MWave resources. Note that no
  98 * checks are made against other devices (ie. superio) for conflicts.
  99 * We'll depend on users using the tpctl utility to do that for now
 100 */
 101 int mwave_debug = 0;
 102 int mwave_3780i_irq = 0;
 103 int mwave_3780i_io = 0;
 104 int mwave_uart_irq = 0;
 105 int mwave_uart_io = 0;
 106 MODULE_PARM(mwave_debug, "i");
 107 MODULE_PARM(mwave_3780i_irq, "i");
 108 MODULE_PARM(mwave_3780i_io, "i");
 109 MODULE_PARM(mwave_uart_irq, "i");
 110 MODULE_PARM(mwave_uart_io, "i");
 111
 112 static int mwave_open(struct inode *inode, struct file *file);
 113 static int mwave_close(struct inode *inode, struct file *file);
 114 static int mwave_ioctl(struct inode *inode, struct file *filp,
 115                        unsigned int iocmd, unsigned long ioarg);
 116
 117 MWAVE_DEVICE_DATA mwave_s_mdd;
 118
 119 static int mwave_open(struct inode *inode, struct file *file)
 120 {
 121         unsigned int retval = 0;
 122
 123         PRINTK_3(TRACE_MWAVE,
 124                 "mwavedd::mwave_open, entry inode %x file %x\n",
 125                 (int) inode, (int) file);
 126         PRINTK_2(TRACE_MWAVE,
 127                 "mwavedd::mwave_open, exit return retval %x\n", retval);
 128
 129         return retval;
 130 }
 131
 132 static int mwave_close(struct inode *inode, struct file *file)
 133 {
 134         unsigned int retval = 0;
 135
 136         PRINTK_3(TRACE_MWAVE,
 137                 "mwavedd::mwave_close, entry inode %x file %x\n",
 138                 (int) inode, (int) file);
 139
 140         PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_close, exit retval %x\n",
 141                 retval);
 142
 143         return retval;
 144 }
 145
 146 static int mwave_ioctl(struct inode *inode, struct file *file,
 147                        unsigned int iocmd, unsigned long ioarg)
 148 {
 149         unsigned int retval = 0;
 150         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
 151
 152         PRINTK_5(TRACE_MWAVE,
 153                 "mwavedd::mwave_ioctl, entry inode %x file %x cmd %x arg %x\n",
 154                 (int) inode, (int) file, iocmd, (int) ioarg);
 155
 156         switch (iocmd) {
 157
 158                 case IOCTL_MW_RESET:
 159                         PRINTK_1(TRACE_MWAVE,
 160                                 "mwavedd::mwave_ioctl, IOCTL_MW_RESET calling tp3780I_ResetDSP\n");
 161                         retval = tp3780I_ResetDSP(&pDrvData->rBDData);
 162                         PRINTK_2(TRACE_MWAVE,
 163                                 "mwavedd::mwave_ioctl, IOCTL_MW_RESET retval %x from tp3780I_ResetDSP\n",
 164                                 retval);
 165                         break;
 166
 167                 case IOCTL_MW_RUN:
 168                         PRINTK_1(TRACE_MWAVE,
 169                                 "mwavedd::mwave_ioctl, IOCTL_MW_RUN calling tp3780I_StartDSP\n");
 170                         retval = tp3780I_StartDSP(&pDrvData->rBDData);
 171                         PRINTK_2(TRACE_MWAVE,
 172                                 "mwavedd::mwave_ioctl, IOCTL_MW_RUN retval %x from tp3780I_StartDSP\n",
 173                                 retval);
 174                         break;
 175
 176                 case IOCTL_MW_DSP_ABILITIES: {
 177                         MW_ABILITIES rAbilities;
 178
 179                         PRINTK_1(TRACE_MWAVE,
 180                                 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES calling tp3780I_QueryAbilities\n");
 181                         retval = tp3780I_QueryAbilities(&pDrvData->rBDData, &rAbilities);
 182                         PRINTK_2(TRACE_MWAVE,
 183                                 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES retval %x from tp3780I_QueryAbilities\n",
 184                                 retval);
 185                         if (retval == 0) {
 186                                 if( copy_to_user((char *) ioarg, (char *) &rAbilities, sizeof(MW_ABILITIES)) )
 187                                         return -EFAULT;
 188                         }
 189                         PRINTK_2(TRACE_MWAVE,
 190                                 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES exit retval %x\n",
 191                                 retval);
 192                 }
 193                         break;
 194
 195                 case IOCTL_MW_READ_DATA:
 196                 case IOCTL_MW_READCLEAR_DATA: {
 197                         MW_READWRITE rReadData;
 198                         unsigned short *pusBuffer = 0;
 199
 200                         if( copy_from_user((char *) &rReadData, (char *) ioarg, sizeof(MW_READWRITE)) )
 201                                 return -EFAULT;
 202                         pusBuffer = (unsigned short *) (rReadData.pBuf);
 203
 204                         PRINTK_4(TRACE_MWAVE,
 205                                 "mwavedd::mwave_ioctl IOCTL_MW_READ_DATA, size %lx, ioarg %lx pusBuffer %p\n",
 206                                 rReadData.ulDataLength, ioarg, pusBuffer);
 207                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, iocmd,
 208                                 (void *) pusBuffer, rReadData.ulDataLength, rReadData.usDspAddress);
 209                 }
 210                         break;
 211
 212                 case IOCTL_MW_READ_INST: {
 213                         MW_READWRITE rReadData;
 214                         unsigned short *pusBuffer = 0;
 215
 216                         if( copy_from_user((char *) &rReadData, (char *) ioarg, sizeof(MW_READWRITE)) )
 217                                 return -EFAULT;
 218                         pusBuffer = (unsigned short *) (rReadData.pBuf);
 219
 220                         PRINTK_4(TRACE_MWAVE,
 221                                 "mwavedd::mwave_ioctl IOCTL_MW_READ_INST, size %lx, ioarg %lx pusBuffer %p\n",
 222                                 rReadData.ulDataLength / 2, ioarg,
 223                                 pusBuffer);
 224                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 225                                 iocmd, pusBuffer,
 226                                 rReadData.ulDataLength / 2,
 227                                 rReadData.usDspAddress);
 228                 }
 229                         break;
 230
 231                 case IOCTL_MW_WRITE_DATA: {
 232                         MW_READWRITE rWriteData;
 233                         unsigned short *pusBuffer = 0;
 234
 235                         if( copy_from_user((char *) &rWriteData, (char *) ioarg, sizeof(MW_READWRITE)) )
 236                                 return -EFAULT;
 237                         pusBuffer = (unsigned short *) (rWriteData.pBuf);
 238
 239                         PRINTK_4(TRACE_MWAVE,
 240                                 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA, size %lx, ioarg %lx pusBuffer %p\n",
 241                                 rWriteData.ulDataLength, ioarg,
 242                                 pusBuffer);
 243                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, iocmd,
 244                                 pusBuffer, rWriteData.ulDataLength, rWriteData.usDspAddress);
 245                 }
 246                         break;
 247
 248                 case IOCTL_MW_WRITE_INST: {
 249                         MW_READWRITE rWriteData;
 250                         unsigned short *pusBuffer = 0;
 251
 252                         if( copy_from_user((char *) &rWriteData, (char *) ioarg, sizeof(MW_READWRITE)) )
 253                                 return -EFAULT;
 254                         pusBuffer = (unsigned short *) (rWriteData.pBuf);
 255
 256                         PRINTK_4(TRACE_MWAVE,
 257                                 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST, size %lx, ioarg %lx pusBuffer %p\n",
 258                                 rWriteData.ulDataLength, ioarg,
 259                                 pusBuffer);
 260                         retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData, iocmd,
 261                                         pusBuffer, rWriteData.ulDataLength, rWriteData.usDspAddress);
 262                 }
 263                         break;
 264
 265                 case IOCTL_MW_REGISTER_IPC: {
 266                         unsigned int ipcnum = (unsigned int) ioarg;
 267
 268                         PRINTK_3(TRACE_MWAVE,
 269                                 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC ipcnum %x entry usIntCount %x\n",
 270                                 ipcnum,
 271                                 pDrvData->IPCs[ipcnum].usIntCount);
 272
 273                         if (ipcnum > 16) {
 274                                 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl: IOCTL_MW_REGISTER_IPC: Error: Invalid ipcnum %x\n", ipcnum);
 275                                 return -EINVAL;
 276                         }
 277                         pDrvData->IPCs[ipcnum].bIsHere = FALSE;
 278                         pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
 279         #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 280         #else
 281                         current->priority = 0x28;       /* boost to provide priority timing */
 282         #endif
 283
 284                         PRINTK_2(TRACE_MWAVE,
 285                                 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC ipcnum %x exit\n",
 286                                 ipcnum);
 287                 }
 288                         break;
 289
 290                 case IOCTL_MW_GET_IPC: {
 291                         unsigned int ipcnum = (unsigned int) ioarg;
 292                         spinlock_t ipc_lock = SPIN_LOCK_UNLOCKED;
 293                         unsigned long flags;
 294
 295                         PRINTK_3(TRACE_MWAVE,
 296                                 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC ipcnum %x, usIntCount %x\n",
 297                                 ipcnum,
 298                                 pDrvData->IPCs[ipcnum].usIntCount);
 299                         if (ipcnum > 16) {
 300                                 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl: IOCTL_MW_GET_IPC: Error: Invalid ipcnum %x\n", ipcnum);
 301                                 return -EINVAL;
 302                         }
 303
 304                         if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
 305                                 PRINTK_2(TRACE_MWAVE,
 306                                         "mwavedd::mwave_ioctl, thread for ipc %x going to sleep\n",
 307                                         ipcnum);
 308
 309                                 spin_lock_irqsave(&ipc_lock, flags);
 310                                 /* check whether an event was signalled by */
 311                                 /* the interrupt handler while we were gone */
 312                                 if (pDrvData->IPCs[ipcnum].usIntCount == 1) {   /* first int has occurred (race condition) */
 313                                         pDrvData->IPCs[ipcnum].usIntCount = 2;  /* first int has been handled */
 314                                         spin_unlock_irqrestore(&ipc_lock, flags);
 315                                         PRINTK_2(TRACE_MWAVE,
 316                                                 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC ipcnum %x handling first int\n",
 317                                                 ipcnum);
 318                                 } else {        /* either 1st int has not yet occurred, or we have already handled the first int */
 319                                         pDrvData->IPCs[ipcnum].bIsHere = TRUE;
 320                                         interruptible_sleep_on(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
 321                                         pDrvData->IPCs[ipcnum].bIsHere = FALSE;
 322                                         if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
 323                                                 pDrvData->IPCs[ipcnum].
 324                                                 usIntCount = 2;
 325                                         }
 326                                         spin_unlock_irqrestore(&ipc_lock, flags);
 327                                         PRINTK_2(TRACE_MWAVE,
 328                                                 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC ipcnum %x woke up and returning to application\n",
 329                                                 ipcnum);
 330                                 }
 331                                 PRINTK_2(TRACE_MWAVE,
 332                                         "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC, returning thread for ipc %x processing\n",
 333                                         ipcnum);
 334                         }
 335                 }
 336                         break;
 337
 338                 case IOCTL_MW_UNREGISTER_IPC: {
 339                         unsigned int ipcnum = (unsigned int) ioarg;
 340
 341                         PRINTK_2(TRACE_MWAVE,
 342                                 "mwavedd::mwave_ioctl IOCTL_MW_UNREGISTER_IPC ipcnum %x\n",
 343                                 ipcnum);
 344                         if (ipcnum > 16) {
 345                                 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl: IOCTL_MW_UNREGISTER_IPC: Error: Invalid ipcnum %x\n", ipcnum);
 346                                 return -EINVAL;
 347                         }
 348                         if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
 349                                 pDrvData->IPCs[ipcnum].bIsEnabled = FALSE;
 350                                 if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) {
 351                                         wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
 352                                 }
 353                         }
 354                 }
 355                         break;
 356
 357                 default:
 358                         PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl: Error: Unrecognized iocmd %x\n", iocmd);
 359                         return -ENOTTY;
 360                         break;
 361         } /* switch */
 362
 363         PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, exit retval %x\n", retval);
 364
 365         return retval;
 366 }
 367
 368
 369 static ssize_t mwave_read(struct file *file, char *buf, size_t count,
 370                           loff_t * ppos)
 371 {
 372         PRINTK_5(TRACE_MWAVE,
 373                 "mwavedd::mwave_read entry file %p, buf %p, count %x ppos %p\n",
 374                 file, buf, count, ppos);
 375
 376         return -EINVAL;
 377 }
 378
 379
 380 static ssize_t mwave_write(struct file *file, const char *buf,
 381                            size_t count, loff_t * ppos)
 382 {
 383         PRINTK_5(TRACE_MWAVE,
 384                 "mwavedd::mwave_write entry file %p, buf %p, count %x ppos %p\n",
 385                 file, buf, count, ppos);
 386
 387         return -EINVAL;
 388 }
 389
 390
 391 static int register_serial_portandirq(unsigned int port, int irq)
 392 {
 393         struct serial_struct serial;
 394
 395         switch ( port ) {
 396                 case 0x3f8:
 397                 case 0x2f8:
 398                 case 0x3e8:
 399                 case 0x2e8:
 400                         /* OK */
 401                         break;
 402                 default:
 403                         PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::register_serial_portandirq: Error: Illegal port %x\n", port );
 404                         return -1;
 405         } /* switch */
 406         /* port is okay */
 407
 408         switch ( irq ) {
 409                 case 3:
 410                 case 4:
 411                 case 5:
 412                 case 7:
 413                         /* OK */
 414                         break;
 415                 default:
 416                         PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::register_serial_portandirq: Error: Illegal irq %x\n", irq );
 417                         return -1;
 418         } /* switch */
 419         /* irq is okay */
 420
 421         memset(&serial, 0, sizeof(serial));
 422         serial.port = port;
 423         serial.irq = irq;
 424         serial.flags = ASYNC_SHARE_IRQ;
 425
 426         return register_serial(&serial);
 427 }
 428
 429
 430 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 431 static struct file_operations mwave_fops = {
 432         owner:THIS_MODULE,
 433         read:mwave_read,
 434         write:mwave_write,
 435         ioctl:mwave_ioctl,
 436         open:mwave_open,
 437         release:mwave_close
 438 };
 439 #else
 440 static struct file_operations mwave_fops = {
 441         NULL,                   /* lseek */
 442         mwave_read,             /* read */
 443         mwave_write,            /* write */
 444         NULL,                   /* readdir */
 445         NULL,                   /* poll */
 446         mwave_ioctl,            /* ioctl */
 447         NULL,                   /* mmap */
 448         mwave_open,             /* open */
 449         NULL,                   /* flush */
 450         mwave_close             /* release */
 451 };
 452 #endif
 453
 454 static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };
 455
 456 /*
 457 * mwave_init is called on module load
 458 *
 459 * mwave_exit is called on module unload
 460 * mwave_exit is also used to clean up after an aborted mwave_init
 461 */
 462 static void mwave_exit(void)
 463 {
 464         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
 465
 466         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");
 467
 468         if (pDrvData->bProcEntryCreated) {
 469 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 470                 remove_proc_entry("mwave", NULL);
 471 #else
 472                 proc_unregister(&proc_root, mwave_proc.low_ino);
 473 #endif
 474         }
 475         if ( pDrvData->sLine >= 0 ) {
 476                 unregister_serial(pDrvData->sLine);
 477         }
 478         if (pDrvData->bMwaveDevRegistered) {
 479                 misc_deregister(&mwave_misc_dev);
 480         }
 481         if (pDrvData->bDSPEnabled) {
 482                 tp3780I_DisableDSP(&pDrvData->rBDData);
 483         }
 484         if (pDrvData->bResourcesClaimed) {
 485                 tp3780I_ReleaseResources(&pDrvData->rBDData);
 486         }
 487         if (pDrvData->bBDInitialized) {
 488                 tp3780I_Cleanup(&pDrvData->rBDData);
 489         }
 490
 491         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n");
 492 }
 493
 494 module_exit(mwave_exit);
 495
 496 static int __init mwave_init(void)
 497 {
 498         int i;
 499         int retval = 0;
 500         unsigned int resultMiscRegister;
 501         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
 502
 503         memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));
 504
 505         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");
 506
 507         pDrvData->bBDInitialized = FALSE;
 508         pDrvData->bResourcesClaimed = FALSE;
 509         pDrvData->bDSPEnabled = FALSE;
 510         pDrvData->bDSPReset = FALSE;
 511         pDrvData->bMwaveDevRegistered = FALSE;
 512         pDrvData->sLine = -1;
 513         pDrvData->bProcEntryCreated = FALSE;
 514
 515         for (i = 0; i < 16; i++) {
 516                 pDrvData->IPCs[i].bIsEnabled = FALSE;
 517                 pDrvData->IPCs[i].bIsHere = FALSE;
 518                 pDrvData->IPCs[i].usIntCount = 0;       /* no ints received yet */
 519 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 520                 init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
 521 #endif
 522         }
 523
 524         retval = tp3780I_InitializeBoardData(&pDrvData->rBDData);
 525         PRINTK_2(TRACE_MWAVE,
 526                 "mwavedd::mwave_init, return from tp3780I_InitializeBoardData retval %x\n",
 527                 retval);
 528         if (retval) {
 529                 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_init: Error: Failed to initialize board data\n");
 530                 goto cleanup_error;
 531         }
 532         pDrvData->bBDInitialized = TRUE;
 533
 534         retval = tp3780I_CalcResources(&pDrvData->rBDData);
 535         PRINTK_2(TRACE_MWAVE,
 536                 "mwavedd::mwave_init, return from tp3780I_CalcResources retval %x\n",
 537                 retval);
 538         if (retval) {
 539                 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to calculate resources\n");
 540                 goto cleanup_error;
 541         }
 542
 543         retval = tp3780I_ClaimResources(&pDrvData->rBDData);
 544         PRINTK_2(TRACE_MWAVE,
 545                 "mwavedd::mwave_init, return from tp3780I_ClaimResources retval %x\n",
 546                 retval);
 547         if (retval) {
 548                 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to claim resources\n");
 549                 goto cleanup_error;
 550         }
 551         pDrvData->bResourcesClaimed = TRUE;
 552
 553         retval = tp3780I_EnableDSP(&pDrvData->rBDData);
 554         PRINTK_2(TRACE_MWAVE,
 555                 "mwavedd::mwave_init, return from tp3780I_EnableDSP retval %x\n",
 556                 retval);
 557         if (retval) {
 558                 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to enable DSP\n");
 559                 goto cleanup_error;
 560         }
 561         pDrvData->bDSPEnabled = TRUE;
 562
 563         resultMiscRegister = misc_register(&mwave_misc_dev);
 564         if (resultMiscRegister < 0) {
 565                 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to register misc device\n");
 566                 goto cleanup_error;
 567         }
 568         pDrvData->bMwaveDevRegistered = TRUE;
 569
 570         pDrvData->sLine = register_serial_portandirq(
 571                 pDrvData->rBDData.rDspSettings.usUartBaseIO,
 572                 pDrvData->rBDData.rDspSettings.usUartIrq
 573         );
 574         if (pDrvData->sLine < 0) {
 575                 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to register serial driver\n");
 576                 goto cleanup_error;
 577         }
 578         /* uart is registered */
 579
 580         if (
 581 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 582                 !create_proc_info_entry("mwave", 0, NULL, mwave_get_info)
 583 #else
 584                 proc_register(&proc_root, &mwave_proc)
 585 #endif
 586         ) {
 587                 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_init: Error: Failed to register /proc/mwave\n");
 588                 goto cleanup_error;
 589         }
 590         pDrvData->bProcEntryCreated = TRUE;
 591
 592         /* SUCCESS! */
 593         return 0;
 594
 595         cleanup_error:
 596         PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_init: Error: Failed to initialize\n");
 597         mwave_exit(); /* clean up */
 598
 599         return -EIO;
 600 }
 601
 602 module_init(mwave_init);
 603
 604
 605 /*
 606 * proc entry stuff added by Ian Pilcher <pilcher@us.ibm.com>
 607 */
 608
 609 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
 610 static int mwave_get_info(char *buf, char **start, off_t offset, int len)
 611 {
 612         DSP_3780I_CONFIG_SETTINGS *pSettings = &mwave_s_mdd.rBDData.rDspSettings;
 613
 614         char *out = buf;
 615
 616         out += sprintf(out, "3780i_IRQ %i\n", pSettings->usDspIrq);
 617         out += sprintf(out, "3780i_DMA %i\n", pSettings->usDspDma);
 618         out += sprintf(out, "3780i_IO  %#.4x\n", pSettings->usDspBaseIO);
 619         out += sprintf(out, "UART_IRQ  %i\n", pSettings->usUartIrq);
 620         out += sprintf(out, "UART_IO   %#.4x\n", pSettings->usUartBaseIO);
 621
 622         return out - buf;
 623 }
 624 #else /* kernel version < 2.4.0 */
 625 static int mwave_read_proc(char *buf, char **start, off_t offset,
 626                            int xlen, int unused)
 627 {
 628         DSP_3780I_CONFIG_SETTINGS *pSettings = &mwave_s_mdd.rBDData.rDspSettings;
 629         int len;
 630
 631         len = sprintf(buf,        "3780i_IRQ %i\n", pSettings->usDspIrq);
 632         len += sprintf(&buf[len], "3780i_DMA %i\n", pSettings->usDspDma);
 633         len += sprintf(&buf[len], "3780i_IO  %#.4x\n", pSettings->usDspBaseIO);
 634         len += sprintf(&buf[len], "UART_IRQ  %i\n", pSettings->usUartIrq);
 635         len += sprintf(&buf[len], "UART_IO   %#.4x\n", pSettings->usUartBaseIO);
 636
 637         return len;
 638 }
 639 #endif