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/module.h>
  50 #include <linux/kernel.h>
  51 #include <linux/fs.h>
  52 #include <linux/init.h>
  53 #include <linux/major.h>
  54 #include <linux/miscdevice.h>
  55 #include <linux/device.h>
  56 #include <linux/serial.h>
  57 #include <linux/sched.h>
  58 #include <linux/spinlock.h>
  59 #include <linux/delay.h>
  60 #include "smapi.h"
  61 #include "mwavedd.h"
  62 #include "3780i.h"
  63 #include "tp3780i.h"
  64
  65 MODULE_DESCRIPTION("3780i Advanced Communications Processor (Mwave) driver");
  66 MODULE_AUTHOR("Mike Sullivan and Paul Schroeder");
  67 MODULE_LICENSE("GPL");
  68
  69 /*
  70 * These parameters support the setting of MWave resources. Note that no
  71 * checks are made against other devices (ie. superio) for conflicts.
  72 * We'll depend on users using the tpctl utility to do that for now
  73 */
  74 int mwave_debug = 0;
  75 int mwave_3780i_irq = 0;
  76 int mwave_3780i_io = 0;
  77 int mwave_uart_irq = 0;
  78 int mwave_uart_io = 0;
  79 module_param(mwave_debug, int, 0);
  80 module_param(mwave_3780i_irq, int, 0);
  81 module_param(mwave_3780i_io, int, 0);
  82 module_param(mwave_uart_irq, int, 0);
  83 module_param(mwave_uart_io, int, 0);
  84
  85 static int mwave_open(struct inode *inode, struct file *file);
  86 static int mwave_close(struct inode *inode, struct file *file);
  87 static int mwave_ioctl(struct inode *inode, struct file *filp,
  88                        unsigned int iocmd, unsigned long ioarg);
  89
  90 MWAVE_DEVICE_DATA mwave_s_mdd;
  91
  92 static int mwave_open(struct inode *inode, struct file *file)
  93 {
  94         unsigned int retval = 0;
  95
  96         PRINTK_3(TRACE_MWAVE,
  97                 "mwavedd::mwave_open, entry inode %p file %p\n",
  98                  inode, file);
  99         PRINTK_2(TRACE_MWAVE,
 100                 "mwavedd::mwave_open, exit return retval %x\n", retval);
 101
 102         return retval;
 103 }
 104
 105 static int mwave_close(struct inode *inode, struct file *file)
 106 {
 107         unsigned int retval = 0;
 108
 109         PRINTK_3(TRACE_MWAVE,
 110                 "mwavedd::mwave_close, entry inode %p file %p\n",
 111                  inode,  file);
 112
 113         PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_close, exit retval %x\n",
 114                 retval);
 115
 116         return retval;
 117 }
 118
 119 static int mwave_ioctl(struct inode *inode, struct file *file,
 120                        unsigned int iocmd, unsigned long ioarg)
 121 {
 122         unsigned int retval = 0;
 123         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
 124         void __user *arg = (void __user *)ioarg;
 125
 126         PRINTK_5(TRACE_MWAVE,
 127                 "mwavedd::mwave_ioctl, entry inode %p file %p cmd %x arg %x\n",
 128                  inode,  file, iocmd, (int) ioarg);
 129
 130         switch (iocmd) {
 131
 132                 case IOCTL_MW_RESET:
 133                         PRINTK_1(TRACE_MWAVE,
 134                                 "mwavedd::mwave_ioctl, IOCTL_MW_RESET"
 135                                 " calling tp3780I_ResetDSP\n");
 136                         retval = tp3780I_ResetDSP(&pDrvData->rBDData);
 137                         PRINTK_2(TRACE_MWAVE,
 138                                 "mwavedd::mwave_ioctl, IOCTL_MW_RESET"
 139                                 " retval %x from tp3780I_ResetDSP\n",
 140                                 retval);
 141                         break;
 142
 143                 case IOCTL_MW_RUN:
 144                         PRINTK_1(TRACE_MWAVE,
 145                                 "mwavedd::mwave_ioctl, IOCTL_MW_RUN"
 146                                 " calling tp3780I_StartDSP\n");
 147                         retval = tp3780I_StartDSP(&pDrvData->rBDData);
 148                         PRINTK_2(TRACE_MWAVE,
 149                                 "mwavedd::mwave_ioctl, IOCTL_MW_RUN"
 150                                 " retval %x from tp3780I_StartDSP\n",
 151                                 retval);
 152                         break;
 153
 154                 case IOCTL_MW_DSP_ABILITIES: {
 155                         MW_ABILITIES rAbilities;
 156
 157                         PRINTK_1(TRACE_MWAVE,
 158                                 "mwavedd::mwave_ioctl,"
 159                                 " IOCTL_MW_DSP_ABILITIES calling"
 160                                 " tp3780I_QueryAbilities\n");
 161                         retval = tp3780I_QueryAbilities(&pDrvData->rBDData,
 162                                         &rAbilities);
 163                         PRINTK_2(TRACE_MWAVE,
 164                                 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
 165                                 " retval %x from tp3780I_QueryAbilities\n",
 166                                 retval);
 167                         if (retval == 0) {
 168                                 if( copy_to_user(arg, &rAbilities,
 169                                                         sizeof(MW_ABILITIES)) )
 170                                         return -EFAULT;
 171                         }
 172                         PRINTK_2(TRACE_MWAVE,
 173                                 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
 174                                 " exit retval %x\n",
 175                                 retval);
 176                 }
 177                         break;
 178
 179                 case IOCTL_MW_READ_DATA:
 180                 case IOCTL_MW_READCLEAR_DATA: {
 181                         MW_READWRITE rReadData;
 182                         unsigned short __user *pusBuffer = NULL;
 183
 184                         if( copy_from_user(&rReadData, arg,
 185                                                 sizeof(MW_READWRITE)) )
 186                                 return -EFAULT;
 187                         pusBuffer = (unsigned short __user *) (rReadData.pBuf);
 188
 189                         PRINTK_4(TRACE_MWAVE,
 190                                 "mwavedd::mwave_ioctl IOCTL_MW_READ_DATA,"
 191                                 " size %lx, ioarg %lx pusBuffer %p\n",
 192                                 rReadData.ulDataLength, ioarg, pusBuffer);
 193                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 194                                         iocmd,
 195                                         pusBuffer,
 196                                         rReadData.ulDataLength,
 197                                         rReadData.usDspAddress);
 198                 }
 199                         break;
 200
 201                 case IOCTL_MW_READ_INST: {
 202                         MW_READWRITE rReadData;
 203                         unsigned short __user *pusBuffer = NULL;
 204
 205                         if( copy_from_user(&rReadData, arg,
 206                                                 sizeof(MW_READWRITE)) )
 207                                 return -EFAULT;
 208                         pusBuffer = (unsigned short __user *) (rReadData.pBuf);
 209
 210                         PRINTK_4(TRACE_MWAVE,
 211                                 "mwavedd::mwave_ioctl IOCTL_MW_READ_INST,"
 212                                 " size %lx, ioarg %lx pusBuffer %p\n",
 213                                 rReadData.ulDataLength / 2, ioarg,
 214                                 pusBuffer);
 215                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 216                                 iocmd, pusBuffer,
 217                                 rReadData.ulDataLength / 2,
 218                                 rReadData.usDspAddress);
 219                 }
 220                         break;
 221
 222                 case IOCTL_MW_WRITE_DATA: {
 223                         MW_READWRITE rWriteData;
 224                         unsigned short __user *pusBuffer = NULL;
 225
 226                         if( copy_from_user(&rWriteData, arg,
 227                                                 sizeof(MW_READWRITE)) )
 228                                 return -EFAULT;
 229                         pusBuffer = (unsigned short __user *) (rWriteData.pBuf);
 230
 231                         PRINTK_4(TRACE_MWAVE,
 232                                 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA,"
 233                                 " size %lx, ioarg %lx pusBuffer %p\n",
 234                                 rWriteData.ulDataLength, ioarg,
 235                                 pusBuffer);
 236                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 237                                         iocmd, pusBuffer,
 238                                         rWriteData.ulDataLength,
 239                                         rWriteData.usDspAddress);
 240                 }
 241                         break;
 242
 243                 case IOCTL_MW_WRITE_INST: {
 244                         MW_READWRITE rWriteData;
 245                         unsigned short __user *pusBuffer = NULL;
 246
 247                         if( copy_from_user(&rWriteData, arg,
 248                                                 sizeof(MW_READWRITE)) )
 249                                 return -EFAULT;
 250                         pusBuffer = (unsigned short __user *)(rWriteData.pBuf);
 251
 252                         PRINTK_4(TRACE_MWAVE,
 253                                 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST,"
 254                                 " size %lx, ioarg %lx pusBuffer %p\n",
 255                                 rWriteData.ulDataLength, ioarg,
 256                                 pusBuffer);
 257                         retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,
 258                                         iocmd, pusBuffer,
 259                                         rWriteData.ulDataLength,
 260                                         rWriteData.usDspAddress);
 261                 }
 262                         break;
 263
 264                 case IOCTL_MW_REGISTER_IPC: {
 265                         unsigned int ipcnum = (unsigned int) ioarg;
 266
 267                         PRINTK_3(TRACE_MWAVE,
 268                                 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
 269                                 " ipcnum %x entry usIntCount %x\n",
 270                                 ipcnum,
 271                                 pDrvData->IPCs[ipcnum].usIntCount);
 272
 273                         if (ipcnum > ARRAY_SIZE(pDrvData->IPCs)) {
 274                                 PRINTK_ERROR(KERN_ERR_MWAVE
 275                                                 "mwavedd::mwave_ioctl:"
 276                                                 " IOCTL_MW_REGISTER_IPC:"
 277                                                 " Error: Invalid ipcnum %x\n",
 278                                                 ipcnum);
 279                                 return -EINVAL;
 280                         }
 281                         pDrvData->IPCs[ipcnum].bIsHere = FALSE;
 282                         pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
 283
 284                         PRINTK_2(TRACE_MWAVE,
 285                                 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
 286                                 " ipcnum %x exit\n",
 287                                 ipcnum);
 288                 }
 289                         break;
 290
 291                 case IOCTL_MW_GET_IPC: {
 292                         unsigned int ipcnum = (unsigned int) ioarg;
 293
 294                         PRINTK_3(TRACE_MWAVE,
 295                                 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
 296                                 " ipcnum %x, usIntCount %x\n",
 297                                 ipcnum,
 298                                 pDrvData->IPCs[ipcnum].usIntCount);
 299                         if (ipcnum > ARRAY_SIZE(pDrvData->IPCs)) {
 300                                 PRINTK_ERROR(KERN_ERR_MWAVE
 301                                                 "mwavedd::mwave_ioctl:"
 302                                                 " IOCTL_MW_GET_IPC: Error:"
 303                                                 " Invalid ipcnum %x\n", ipcnum);
 304                                 return -EINVAL;
 305                         }
 306
 307                         if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
 308                                 DECLARE_WAITQUEUE(wait, current);
 309
 310                                 PRINTK_2(TRACE_MWAVE,
 311                                         "mwavedd::mwave_ioctl, thread for"
 312                                         " ipc %x going to sleep\n",
 313                                         ipcnum);
 314                                 add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
 315                                 pDrvData->IPCs[ipcnum].bIsHere = TRUE;
 316                                 set_current_state(TASK_INTERRUPTIBLE);
 317                                 /* check whether an event was signalled by */
 318                                 /* the interrupt handler while we were gone */
 319                                 if (pDrvData->IPCs[ipcnum].usIntCount == 1) {   /* first int has occurred (race condition) */
 320                                         pDrvData->IPCs[ipcnum].usIntCount = 2;  /* first int has been handled */
 321                                         PRINTK_2(TRACE_MWAVE,
 322                                                 "mwavedd::mwave_ioctl"
 323                                                 " IOCTL_MW_GET_IPC ipcnum %x"
 324                                                 " handling first int\n",
 325                                                 ipcnum);
 326                                 } else {        /* either 1st int has not yet occurred, or we have already handled the first int */
 327                                         schedule();
 328                                         if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
 329                                                 pDrvData->IPCs[ipcnum].usIntCount = 2;
 330                                         }
 331                                         PRINTK_2(TRACE_MWAVE,
 332                                                 "mwavedd::mwave_ioctl"
 333                                                 " IOCTL_MW_GET_IPC ipcnum %x"
 334                                                 " woke up and returning to"
 335                                                 " application\n",
 336                                                 ipcnum);
 337                                 }
 338                                 pDrvData->IPCs[ipcnum].bIsHere = FALSE;
 339                                 remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
 340                                 set_current_state(TASK_RUNNING);
 341                                 PRINTK_2(TRACE_MWAVE,
 342                                         "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC,"
 343                                         " returning thread for ipc %x"
 344                                         " processing\n",
 345                                         ipcnum);
 346                         }
 347                 }
 348                         break;
 349
 350                 case IOCTL_MW_UNREGISTER_IPC: {
 351                         unsigned int ipcnum = (unsigned int) ioarg;
 352
 353                         PRINTK_2(TRACE_MWAVE,
 354                                 "mwavedd::mwave_ioctl IOCTL_MW_UNREGISTER_IPC"
 355                                 " ipcnum %x\n",
 356                                 ipcnum);
 357                         if (ipcnum > ARRAY_SIZE(pDrvData->IPCs)) {
 358                                 PRINTK_ERROR(KERN_ERR_MWAVE
 359                                                 "mwavedd::mwave_ioctl:"
 360                                                 " IOCTL_MW_UNREGISTER_IPC:"
 361                                                 " Error: Invalid ipcnum %x\n",
 362                                                 ipcnum);
 363                                 return -EINVAL;
 364                         }
 365                         if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
 366                                 pDrvData->IPCs[ipcnum].bIsEnabled = FALSE;
 367                                 if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) {
 368                                         wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
 369                                 }
 370                         }
 371                 }
 372                         break;
 373
 374                 default:
 375                         PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl:"
 376                                         " Error: Unrecognized iocmd %x\n",
 377                                         iocmd);
 378                         return -ENOTTY;
 379                         break;
 380         } /* switch */
 381
 382         PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, exit retval %x\n", retval);
 383
 384         return retval;
 385 }
 386
 387
 388 static ssize_t mwave_read(struct file *file, char __user *buf, size_t count,
 389                           loff_t * ppos)
 390 {
 391         PRINTK_5(TRACE_MWAVE,
 392                 "mwavedd::mwave_read entry file %p, buf %p, count %zx ppos %p\n",
 393                 file, buf, count, ppos);
 394
 395         return -EINVAL;
 396 }
 397
 398
 399 static ssize_t mwave_write(struct file *file, const char __user *buf,
 400                            size_t count, loff_t * ppos)
 401 {
 402         PRINTK_5(TRACE_MWAVE,
 403                 "mwavedd::mwave_write entry file %p, buf %p,"
 404                 " count %zx ppos %p\n",
 405                 file, buf, count, ppos);
 406
 407         return -EINVAL;
 408 }
 409
 410
 411 static int register_serial_portandirq(unsigned int port, int irq)
 412 {
 413         struct serial_struct serial;
 414
 415         switch ( port ) {
 416                 case 0x3f8:
 417                 case 0x2f8:
 418                 case 0x3e8:
 419                 case 0x2e8:
 420                         /* OK */
 421                         break;
 422                 default:
 423                         PRINTK_ERROR(KERN_ERR_MWAVE
 424                                         "mwavedd::register_serial_portandirq:"
 425                                         " Error: Illegal port %x\n", port );
 426                         return -1;
 427         } /* switch */
 428         /* port is okay */
 429
 430         switch ( irq ) {
 431                 case 3:
 432                 case 4:
 433                 case 5:
 434                 case 7:
 435                         /* OK */
 436                         break;
 437                 default:
 438                         PRINTK_ERROR(KERN_ERR_MWAVE
 439                                         "mwavedd::register_serial_portandirq:"
 440                                         " Error: Illegal irq %x\n", irq );
 441                         return -1;
 442         } /* switch */
 443         /* irq is okay */
 444
 445         memset(&serial, 0, sizeof(serial));
 446         serial.port = port;
 447         serial.irq = irq;
 448         serial.flags = ASYNC_SHARE_IRQ;
 449
 450         return register_serial(&serial);
 451 }
 452
 453
 454 static struct file_operations mwave_fops = {
 455         .owner          = THIS_MODULE,
 456         .read           = mwave_read,
 457         .write          = mwave_write,
 458         .ioctl          = mwave_ioctl,
 459         .open           = mwave_open,
 460         .release        = mwave_close
 461 };
 462
 463
 464 static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };
 465
 466 #if 0 /* totally b0rked */
 467 /*
 468  * sysfs support <paulsch@us.ibm.com>
 469  */
 470
 471 struct device mwave_device;
 472
 473 /* Prevent code redundancy, create a macro for mwave_show_* functions. */
 474 #define mwave_show_function(attr_name, format_string, field)            \
 475 static ssize_t mwave_show_##attr_name(struct device *dev, struct device_attribute *attr, char *buf)     \
 476 {                                                                       \
 477         DSP_3780I_CONFIG_SETTINGS *pSettings =                          \
 478                 &mwave_s_mdd.rBDData.rDspSettings;                      \
 479         return sprintf(buf, format_string, pSettings->field);           \
 480 }
 481
 482 /* All of our attributes are read attributes. */
 483 #define mwave_dev_rd_attr(attr_name, format_string, field)              \
 484         mwave_show_function(attr_name, format_string, field)            \
 485 static DEVICE_ATTR(attr_name, S_IRUGO, mwave_show_##attr_name, NULL)
 486
 487 mwave_dev_rd_attr (3780i_dma, "%i\n", usDspDma);
 488 mwave_dev_rd_attr (3780i_irq, "%i\n", usDspIrq);
 489 mwave_dev_rd_attr (3780i_io, "%#.4x\n", usDspBaseIO);
 490 mwave_dev_rd_attr (uart_irq, "%i\n", usUartIrq);
 491 mwave_dev_rd_attr (uart_io, "%#.4x\n", usUartBaseIO);
 492
 493 static struct device_attribute * const mwave_dev_attrs[] = {
 494         &dev_attr_3780i_dma,
 495         &dev_attr_3780i_irq,
 496         &dev_attr_3780i_io,
 497         &dev_attr_uart_irq,
 498         &dev_attr_uart_io,
 499 };
 500 #endif
 501
 502 /*
 503 * mwave_init is called on module load
 504 *
 505 * mwave_exit is called on module unload
 506 * mwave_exit is also used to clean up after an aborted mwave_init
 507 */
 508 static void mwave_exit(void)
 509 {
 510         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
 511
 512         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");
 513
 514 #if 0
 515         for (i = 0; i < pDrvData->nr_registered_attrs; i++)
 516                 device_remove_file(&mwave_device, mwave_dev_attrs[i]);
 517         pDrvData->nr_registered_attrs = 0;
 518
 519         if (pDrvData->device_registered) {
 520                 device_unregister(&mwave_device);
 521                 pDrvData->device_registered = FALSE;
 522         }
 523 #endif
 524
 525         if ( pDrvData->sLine >= 0 ) {
 526                 unregister_serial(pDrvData->sLine);
 527         }
 528         if (pDrvData->bMwaveDevRegistered) {
 529                 misc_deregister(&mwave_misc_dev);
 530         }
 531         if (pDrvData->bDSPEnabled) {
 532                 tp3780I_DisableDSP(&pDrvData->rBDData);
 533         }
 534         if (pDrvData->bResourcesClaimed) {
 535                 tp3780I_ReleaseResources(&pDrvData->rBDData);
 536         }
 537         if (pDrvData->bBDInitialized) {
 538                 tp3780I_Cleanup(&pDrvData->rBDData);
 539         }
 540
 541         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n");
 542 }
 543
 544 module_exit(mwave_exit);
 545
 546 static int __init mwave_init(void)
 547 {
 548         int i;
 549         int retval = 0;
 550         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
 551
 552         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");
 553
 554         memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));
 555
 556         pDrvData->bBDInitialized = FALSE;
 557         pDrvData->bResourcesClaimed = FALSE;
 558         pDrvData->bDSPEnabled = FALSE;
 559         pDrvData->bDSPReset = FALSE;
 560         pDrvData->bMwaveDevRegistered = FALSE;
 561         pDrvData->sLine = -1;
 562
 563         for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) {
 564                 pDrvData->IPCs[i].bIsEnabled = FALSE;
 565                 pDrvData->IPCs[i].bIsHere = FALSE;
 566                 pDrvData->IPCs[i].usIntCount = 0;       /* no ints received yet */
 567                 init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
 568         }
 569
 570         retval = tp3780I_InitializeBoardData(&pDrvData->rBDData);
 571         PRINTK_2(TRACE_MWAVE,
 572                 "mwavedd::mwave_init, return from tp3780I_InitializeBoardData"
 573                 " retval %x\n",
 574                 retval);
 575         if (retval) {
 576                 PRINTK_ERROR(KERN_ERR_MWAVE
 577                                 "mwavedd::mwave_init: Error:"
 578                                 " Failed to initialize board data\n");
 579                 goto cleanup_error;
 580         }
 581         pDrvData->bBDInitialized = TRUE;
 582
 583         retval = tp3780I_CalcResources(&pDrvData->rBDData);
 584         PRINTK_2(TRACE_MWAVE,
 585                 "mwavedd::mwave_init, return from tp3780I_CalcResources"
 586                 " retval %x\n",
 587                 retval);
 588         if (retval) {
 589                 PRINTK_ERROR(KERN_ERR_MWAVE
 590                                 "mwavedd:mwave_init: Error:"
 591                                 " Failed to calculate resources\n");
 592                 goto cleanup_error;
 593         }
 594
 595         retval = tp3780I_ClaimResources(&pDrvData->rBDData);
 596         PRINTK_2(TRACE_MWAVE,
 597                 "mwavedd::mwave_init, return from tp3780I_ClaimResources"
 598                 " retval %x\n",
 599                 retval);
 600         if (retval) {
 601                 PRINTK_ERROR(KERN_ERR_MWAVE
 602                                 "mwavedd:mwave_init: Error:"
 603                                 " Failed to claim resources\n");
 604                 goto cleanup_error;
 605         }
 606         pDrvData->bResourcesClaimed = TRUE;
 607
 608         retval = tp3780I_EnableDSP(&pDrvData->rBDData);
 609         PRINTK_2(TRACE_MWAVE,
 610                 "mwavedd::mwave_init, return from tp3780I_EnableDSP"
 611                 " retval %x\n",
 612                 retval);
 613         if (retval) {
 614                 PRINTK_ERROR(KERN_ERR_MWAVE
 615                                 "mwavedd:mwave_init: Error:"
 616                                 " Failed to enable DSP\n");
 617                 goto cleanup_error;
 618         }
 619         pDrvData->bDSPEnabled = TRUE;
 620
 621         if (misc_register(&mwave_misc_dev) < 0) {
 622                 PRINTK_ERROR(KERN_ERR_MWAVE
 623                                 "mwavedd:mwave_init: Error:"
 624                                 " Failed to register misc device\n");
 625                 goto cleanup_error;
 626         }
 627         pDrvData->bMwaveDevRegistered = TRUE;
 628
 629         pDrvData->sLine = register_serial_portandirq(
 630                 pDrvData->rBDData.rDspSettings.usUartBaseIO,
 631                 pDrvData->rBDData.rDspSettings.usUartIrq
 632         );
 633         if (pDrvData->sLine < 0) {
 634                 PRINTK_ERROR(KERN_ERR_MWAVE
 635                                 "mwavedd:mwave_init: Error:"
 636                                 " Failed to register serial driver\n");
 637                 goto cleanup_error;
 638         }
 639         /* uart is registered */
 640
 641 #if 0
 642         /* sysfs */
 643         memset(&mwave_device, 0, sizeof (struct device));
 644         snprintf(mwave_device.bus_id, BUS_ID_SIZE, "mwave");
 645
 646         if (device_register(&mwave_device))
 647                 goto cleanup_error;
 648         pDrvData->device_registered = TRUE;
 649         for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) {
 650                 if(device_create_file(&mwave_device, mwave_dev_attrs[i])) {
 651                         PRINTK_ERROR(KERN_ERR_MWAVE
 652                                         "mwavedd:mwave_init: Error:"
 653                                         " Failed to create sysfs file %s\n",
 654                                         mwave_dev_attrs[i]->attr.name);
 655                         goto cleanup_error;
 656                 }
 657                 pDrvData->nr_registered_attrs++;
 658         }
 659 #endif
 660
 661         /* SUCCESS! */
 662         return 0;
 663
 664 cleanup_error:
 665         PRINTK_ERROR(KERN_ERR_MWAVE
 666                         "mwavedd::mwave_init: Error:"
 667                         " Failed to initialize\n");
 668         mwave_exit(); /* clean up */
 669
 670         return -EIO;
 671 }
 672
 673 module_init(mwave_init);
 674