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/mutex.h>
  60 #include <linux/delay.h>
  61 #include <linux/serial_8250.h>
  62 #include "smapi.h"
  63 #include "mwavedd.h"
  64 #include "3780i.h"
  65 #include "tp3780i.h"
  66
  67 MODULE_DESCRIPTION("3780i Advanced Communications Processor (Mwave) driver");
  68 MODULE_AUTHOR("Mike Sullivan and Paul Schroeder");
  69 MODULE_LICENSE("GPL");
  70
  71 /*
  72 * These parameters support the setting of MWave resources. Note that no
  73 * checks are made against other devices (ie. superio) for conflicts.
  74 * We'll depend on users using the tpctl utility to do that for now
  75 */
  76 static DEFINE_MUTEX(mwave_mutex);
  77 int mwave_debug = 0;
  78 int mwave_3780i_irq = 0;
  79 int mwave_3780i_io = 0;
  80 int mwave_uart_irq = 0;
  81 int mwave_uart_io = 0;
  82 module_param(mwave_debug, int, 0);
  83 module_param(mwave_3780i_irq, int, 0);
  84 module_param(mwave_3780i_io, int, 0);
  85 module_param(mwave_uart_irq, int, 0);
  86 module_param(mwave_uart_io, int, 0);
  87
  88 static int mwave_open(struct inode *inode, struct file *file);
  89 static int mwave_close(struct inode *inode, struct file *file);
  90 static long mwave_ioctl(struct file *filp, unsigned int iocmd,
  91                                                         unsigned long ioarg);
  92
  93 MWAVE_DEVICE_DATA mwave_s_mdd;
  94
  95 static int mwave_open(struct inode *inode, struct file *file)
  96 {
  97         unsigned int retval = 0;
  98
  99         PRINTK_3(TRACE_MWAVE,
 100                 "mwavedd::mwave_open, entry inode %p file %p\n",
 101                  inode, file);
 102         PRINTK_2(TRACE_MWAVE,
 103                 "mwavedd::mwave_open, exit return retval %x\n", retval);
 104
 105         return retval;
 106 }
 107
 108 static int mwave_close(struct inode *inode, struct file *file)
 109 {
 110         unsigned int retval = 0;
 111
 112         PRINTK_3(TRACE_MWAVE,
 113                 "mwavedd::mwave_close, entry inode %p file %p\n",
 114                  inode,  file);
 115
 116         PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_close, exit retval %x\n",
 117                 retval);
 118
 119         return retval;
 120 }
 121
 122 static long mwave_ioctl(struct file *file, unsigned int iocmd,
 123                                                         unsigned long ioarg)
 124 {
 125         unsigned int retval = 0;
 126         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
 127         void __user *arg = (void __user *)ioarg;
 128
 129         PRINTK_4(TRACE_MWAVE,
 130                 "mwavedd::mwave_ioctl, entry file %p cmd %x arg %x\n",
 131                 file, iocmd, (int) ioarg);
 132
 133         switch (iocmd) {
 134
 135                 case IOCTL_MW_RESET:
 136                         PRINTK_1(TRACE_MWAVE,
 137                                 "mwavedd::mwave_ioctl, IOCTL_MW_RESET"
 138                                 " calling tp3780I_ResetDSP\n");
 139                         mutex_lock(&mwave_mutex);
 140                         retval = tp3780I_ResetDSP(&pDrvData->rBDData);
 141                         mutex_unlock(&mwave_mutex);
 142                         PRINTK_2(TRACE_MWAVE,
 143                                 "mwavedd::mwave_ioctl, IOCTL_MW_RESET"
 144                                 " retval %x from tp3780I_ResetDSP\n",
 145                                 retval);
 146                         break;
 147
 148                 case IOCTL_MW_RUN:
 149                         PRINTK_1(TRACE_MWAVE,
 150                                 "mwavedd::mwave_ioctl, IOCTL_MW_RUN"
 151                                 " calling tp3780I_StartDSP\n");
 152                         mutex_lock(&mwave_mutex);
 153                         retval = tp3780I_StartDSP(&pDrvData->rBDData);
 154                         mutex_unlock(&mwave_mutex);
 155                         PRINTK_2(TRACE_MWAVE,
 156                                 "mwavedd::mwave_ioctl, IOCTL_MW_RUN"
 157                                 " retval %x from tp3780I_StartDSP\n",
 158                                 retval);
 159                         break;
 160
 161                 case IOCTL_MW_DSP_ABILITIES: {
 162                         MW_ABILITIES rAbilities;
 163
 164                         PRINTK_1(TRACE_MWAVE,
 165                                 "mwavedd::mwave_ioctl,"
 166                                 " IOCTL_MW_DSP_ABILITIES calling"
 167                                 " tp3780I_QueryAbilities\n");
 168                         mutex_lock(&mwave_mutex);
 169                         retval = tp3780I_QueryAbilities(&pDrvData->rBDData,
 170                                         &rAbilities);
 171                         mutex_unlock(&mwave_mutex);
 172                         PRINTK_2(TRACE_MWAVE,
 173                                 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
 174                                 " retval %x from tp3780I_QueryAbilities\n",
 175                                 retval);
 176                         if (retval == 0) {
 177                                 if( copy_to_user(arg, &rAbilities,
 178                                                         sizeof(MW_ABILITIES)) )
 179                                         return -EFAULT;
 180                         }
 181                         PRINTK_2(TRACE_MWAVE,
 182                                 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
 183                                 " exit retval %x\n",
 184                                 retval);
 185                 }
 186                         break;
 187
 188                 case IOCTL_MW_READ_DATA:
 189                 case IOCTL_MW_READCLEAR_DATA: {
 190                         MW_READWRITE rReadData;
 191                         unsigned short __user *pusBuffer = NULL;
 192
 193                         if( copy_from_user(&rReadData, arg,
 194                                                 sizeof(MW_READWRITE)) )
 195                                 return -EFAULT;
 196                         pusBuffer = (unsigned short __user *) (rReadData.pBuf);
 197
 198                         PRINTK_4(TRACE_MWAVE,
 199                                 "mwavedd::mwave_ioctl IOCTL_MW_READ_DATA,"
 200                                 " size %lx, ioarg %lx pusBuffer %p\n",
 201                                 rReadData.ulDataLength, ioarg, pusBuffer);
 202                         mutex_lock(&mwave_mutex);
 203                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 204                                         iocmd,
 205                                         pusBuffer,
 206                                         rReadData.ulDataLength,
 207                                         rReadData.usDspAddress);
 208                         mutex_unlock(&mwave_mutex);
 209                 }
 210                         break;
 211
 212                 case IOCTL_MW_READ_INST: {
 213                         MW_READWRITE rReadData;
 214                         unsigned short __user *pusBuffer = NULL;
 215
 216                         if( copy_from_user(&rReadData, arg,
 217                                                 sizeof(MW_READWRITE)) )
 218                                 return -EFAULT;
 219                         pusBuffer = (unsigned short __user *) (rReadData.pBuf);
 220
 221                         PRINTK_4(TRACE_MWAVE,
 222                                 "mwavedd::mwave_ioctl IOCTL_MW_READ_INST,"
 223                                 " size %lx, ioarg %lx pusBuffer %p\n",
 224                                 rReadData.ulDataLength / 2, ioarg,
 225                                 pusBuffer);
 226                         mutex_lock(&mwave_mutex);
 227                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 228                                 iocmd, pusBuffer,
 229                                 rReadData.ulDataLength / 2,
 230                                 rReadData.usDspAddress);
 231                         mutex_unlock(&mwave_mutex);
 232                 }
 233                         break;
 234
 235                 case IOCTL_MW_WRITE_DATA: {
 236                         MW_READWRITE rWriteData;
 237                         unsigned short __user *pusBuffer = NULL;
 238
 239                         if( copy_from_user(&rWriteData, arg,
 240                                                 sizeof(MW_READWRITE)) )
 241                                 return -EFAULT;
 242                         pusBuffer = (unsigned short __user *) (rWriteData.pBuf);
 243
 244                         PRINTK_4(TRACE_MWAVE,
 245                                 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA,"
 246                                 " size %lx, ioarg %lx pusBuffer %p\n",
 247                                 rWriteData.ulDataLength, ioarg,
 248                                 pusBuffer);
 249                         mutex_lock(&mwave_mutex);
 250                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 251                                         iocmd, pusBuffer,
 252                                         rWriteData.ulDataLength,
 253                                         rWriteData.usDspAddress);
 254                         mutex_unlock(&mwave_mutex);
 255                 }
 256                         break;
 257
 258                 case IOCTL_MW_WRITE_INST: {
 259                         MW_READWRITE rWriteData;
 260                         unsigned short __user *pusBuffer = NULL;
 261
 262                         if( copy_from_user(&rWriteData, arg,
 263                                                 sizeof(MW_READWRITE)) )
 264                                 return -EFAULT;
 265                         pusBuffer = (unsigned short __user *)(rWriteData.pBuf);
 266
 267                         PRINTK_4(TRACE_MWAVE,
 268                                 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST,"
 269                                 " size %lx, ioarg %lx pusBuffer %p\n",
 270                                 rWriteData.ulDataLength, ioarg,
 271                                 pusBuffer);
 272                         mutex_lock(&mwave_mutex);
 273                         retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,
 274                                         iocmd, pusBuffer,
 275                                         rWriteData.ulDataLength,
 276                                         rWriteData.usDspAddress);
 277                         mutex_unlock(&mwave_mutex);
 278                 }
 279                         break;
 280
 281                 case IOCTL_MW_REGISTER_IPC: {
 282                         unsigned int ipcnum = (unsigned int) ioarg;
 283
 284                         if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
 285                                 PRINTK_ERROR(KERN_ERR_MWAVE
 286                                                 "mwavedd::mwave_ioctl:"
 287                                                 " IOCTL_MW_REGISTER_IPC:"
 288                                                 " Error: Invalid ipcnum %x\n",
 289                                                 ipcnum);
 290                                 return -EINVAL;
 291                         }
 292                         PRINTK_3(TRACE_MWAVE,
 293                                 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
 294                                 " ipcnum %x entry usIntCount %x\n",
 295                                 ipcnum,
 296                                 pDrvData->IPCs[ipcnum].usIntCount);
 297
 298                         mutex_lock(&mwave_mutex);
 299                         pDrvData->IPCs[ipcnum].bIsHere = FALSE;
 300                         pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
 301                         mutex_unlock(&mwave_mutex);
 302
 303                         PRINTK_2(TRACE_MWAVE,
 304                                 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
 305                                 " ipcnum %x exit\n",
 306                                 ipcnum);
 307                 }
 308                         break;
 309
 310                 case IOCTL_MW_GET_IPC: {
 311                         unsigned int ipcnum = (unsigned int) ioarg;
 312
 313                         if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
 314                                 PRINTK_ERROR(KERN_ERR_MWAVE
 315                                                 "mwavedd::mwave_ioctl:"
 316                                                 " IOCTL_MW_GET_IPC: Error:"
 317                                                 " Invalid ipcnum %x\n", ipcnum);
 318                                 return -EINVAL;
 319                         }
 320                         PRINTK_3(TRACE_MWAVE,
 321                                 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
 322                                 " ipcnum %x, usIntCount %x\n",
 323                                 ipcnum,
 324                                 pDrvData->IPCs[ipcnum].usIntCount);
 325
 326                         mutex_lock(&mwave_mutex);
 327                         if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
 328                                 DECLARE_WAITQUEUE(wait, current);
 329
 330                                 PRINTK_2(TRACE_MWAVE,
 331                                         "mwavedd::mwave_ioctl, thread for"
 332                                         " ipc %x going to sleep\n",
 333                                         ipcnum);
 334                                 add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
 335                                 pDrvData->IPCs[ipcnum].bIsHere = TRUE;
 336                                 set_current_state(TASK_INTERRUPTIBLE);
 337                                 /* check whether an event was signalled by */
 338                                 /* the interrupt handler while we were gone */
 339                                 if (pDrvData->IPCs[ipcnum].usIntCount == 1) {   /* first int has occurred (race condition) */
 340                                         pDrvData->IPCs[ipcnum].usIntCount = 2;  /* first int has been handled */
 341                                         PRINTK_2(TRACE_MWAVE,
 342                                                 "mwavedd::mwave_ioctl"
 343                                                 " IOCTL_MW_GET_IPC ipcnum %x"
 344                                                 " handling first int\n",
 345                                                 ipcnum);
 346                                 } else {        /* either 1st int has not yet occurred, or we have already handled the first int */
 347                                         schedule();
 348                                         if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
 349                                                 pDrvData->IPCs[ipcnum].usIntCount = 2;
 350                                         }
 351                                         PRINTK_2(TRACE_MWAVE,
 352                                                 "mwavedd::mwave_ioctl"
 353                                                 " IOCTL_MW_GET_IPC ipcnum %x"
 354                                                 " woke up and returning to"
 355                                                 " application\n",
 356                                                 ipcnum);
 357                                 }
 358                                 pDrvData->IPCs[ipcnum].bIsHere = FALSE;
 359                                 remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
 360                                 set_current_state(TASK_RUNNING);
 361                                 PRINTK_2(TRACE_MWAVE,
 362                                         "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC,"
 363                                         " returning thread for ipc %x"
 364                                         " processing\n",
 365                                         ipcnum);
 366                         }
 367                         mutex_unlock(&mwave_mutex);
 368                 }
 369                         break;
 370
 371                 case IOCTL_MW_UNREGISTER_IPC: {
 372                         unsigned int ipcnum = (unsigned int) ioarg;
 373
 374                         PRINTK_2(TRACE_MWAVE,
 375                                 "mwavedd::mwave_ioctl IOCTL_MW_UNREGISTER_IPC"
 376                                 " ipcnum %x\n",
 377                                 ipcnum);
 378                         if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
 379                                 PRINTK_ERROR(KERN_ERR_MWAVE
 380                                                 "mwavedd::mwave_ioctl:"
 381                                                 " IOCTL_MW_UNREGISTER_IPC:"
 382                                                 " Error: Invalid ipcnum %x\n",
 383                                                 ipcnum);
 384                                 return -EINVAL;
 385                         }
 386                         mutex_lock(&mwave_mutex);
 387                         if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
 388                                 pDrvData->IPCs[ipcnum].bIsEnabled = FALSE;
 389                                 if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) {
 390                                         wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
 391                                 }
 392                         }
 393                         mutex_unlock(&mwave_mutex);
 394                 }
 395                         break;
 396
 397                 default:
 398                         return -ENOTTY;
 399                         break;
 400         } /* switch */
 401
 402         PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, exit retval %x\n", retval);
 403
 404         return retval;
 405 }
 406
 407
 408 static ssize_t mwave_read(struct file *file, char __user *buf, size_t count,
 409                           loff_t * ppos)
 410 {
 411         PRINTK_5(TRACE_MWAVE,
 412                 "mwavedd::mwave_read entry file %p, buf %p, count %zx ppos %p\n",
 413                 file, buf, count, ppos);
 414
 415         return -EINVAL;
 416 }
 417
 418
 419 static ssize_t mwave_write(struct file *file, const char __user *buf,
 420                            size_t count, loff_t * ppos)
 421 {
 422         PRINTK_5(TRACE_MWAVE,
 423                 "mwavedd::mwave_write entry file %p, buf %p,"
 424                 " count %zx ppos %p\n",
 425                 file, buf, count, ppos);
 426
 427         return -EINVAL;
 428 }
 429
 430
 431 static int register_serial_portandirq(unsigned int port, int irq)
 432 {
 433         struct uart_port uart;
 434
 435         switch ( port ) {
 436                 case 0x3f8:
 437                 case 0x2f8:
 438                 case 0x3e8:
 439                 case 0x2e8:
 440                         /* OK */
 441                         break;
 442                 default:
 443                         PRINTK_ERROR(KERN_ERR_MWAVE
 444                                         "mwavedd::register_serial_portandirq:"
 445                                         " Error: Illegal port %x\n", port );
 446                         return -1;
 447         } /* switch */
 448         /* port is okay */
 449
 450         switch ( irq ) {
 451                 case 3:
 452                 case 4:
 453                 case 5:
 454                 case 7:
 455                         /* OK */
 456                         break;
 457                 default:
 458                         PRINTK_ERROR(KERN_ERR_MWAVE
 459                                         "mwavedd::register_serial_portandirq:"
 460                                         " Error: Illegal irq %x\n", irq );
 461                         return -1;
 462         } /* switch */
 463         /* irq is okay */
 464
 465         memset(&uart, 0, sizeof(struct uart_port));
 466
 467         uart.uartclk =  1843200;
 468         uart.iobase = port;
 469         uart.irq = irq;
 470         uart.iotype = UPIO_PORT;
 471         uart.flags =  UPF_SHARE_IRQ;
 472         return serial8250_register_port(&uart);
 473 }
 474
 475
 476 static const struct file_operations mwave_fops = {
 477         .owner          = THIS_MODULE,
 478         .read           = mwave_read,
 479         .write          = mwave_write,
 480         .unlocked_ioctl = mwave_ioctl,
 481         .open           = mwave_open,
 482         .release        = mwave_close,
 483         .llseek         = default_llseek,
 484 };
 485
 486
 487 static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };
 488
 489 #if 0 /* totally b0rked */
 490 /*
 491  * sysfs support <paulsch@us.ibm.com>
 492  */
 493
 494 struct device mwave_device;
 495
 496 /* Prevent code redundancy, create a macro for mwave_show_* functions. */
 497 #define mwave_show_function(attr_name, format_string, field)            \
 498 static ssize_t mwave_show_##attr_name(struct device *dev, struct device_attribute *attr, char *buf)     \
 499 {                                                                       \
 500         DSP_3780I_CONFIG_SETTINGS *pSettings =                          \
 501                 &mwave_s_mdd.rBDData.rDspSettings;                      \
 502         return sprintf(buf, format_string, pSettings->field);           \
 503 }
 504
 505 /* All of our attributes are read attributes. */
 506 #define mwave_dev_rd_attr(attr_name, format_string, field)              \
 507         mwave_show_function(attr_name, format_string, field)            \
 508 static DEVICE_ATTR(attr_name, S_IRUGO, mwave_show_##attr_name, NULL)
 509
 510 mwave_dev_rd_attr (3780i_dma, "%i\n", usDspDma);
 511 mwave_dev_rd_attr (3780i_irq, "%i\n", usDspIrq);
 512 mwave_dev_rd_attr (3780i_io, "%#.4x\n", usDspBaseIO);
 513 mwave_dev_rd_attr (uart_irq, "%i\n", usUartIrq);
 514 mwave_dev_rd_attr (uart_io, "%#.4x\n", usUartBaseIO);
 515
 516 static struct device_attribute * const mwave_dev_attrs[] = {
 517         &dev_attr_3780i_dma,
 518         &dev_attr_3780i_irq,
 519         &dev_attr_3780i_io,
 520         &dev_attr_uart_irq,
 521         &dev_attr_uart_io,
 522 };
 523 #endif
 524
 525 /*
 526 * mwave_init is called on module load
 527 *
 528 * mwave_exit is called on module unload
 529 * mwave_exit is also used to clean up after an aborted mwave_init
 530 */
 531 static void mwave_exit(void)
 532 {
 533         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
 534
 535         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");
 536
 537 #if 0
 538         for (i = 0; i < pDrvData->nr_registered_attrs; i++)
 539                 device_remove_file(&mwave_device, mwave_dev_attrs[i]);
 540         pDrvData->nr_registered_attrs = 0;
 541
 542         if (pDrvData->device_registered) {
 543                 device_unregister(&mwave_device);
 544                 pDrvData->device_registered = FALSE;
 545         }
 546 #endif
 547
 548         if ( pDrvData->sLine >= 0 ) {
 549                 serial8250_unregister_port(pDrvData->sLine);
 550         }
 551         if (pDrvData->bMwaveDevRegistered) {
 552                 misc_deregister(&mwave_misc_dev);
 553         }
 554         if (pDrvData->bDSPEnabled) {
 555                 tp3780I_DisableDSP(&pDrvData->rBDData);
 556         }
 557         if (pDrvData->bResourcesClaimed) {
 558                 tp3780I_ReleaseResources(&pDrvData->rBDData);
 559         }
 560         if (pDrvData->bBDInitialized) {
 561                 tp3780I_Cleanup(&pDrvData->rBDData);
 562         }
 563
 564         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n");
 565 }
 566
 567 module_exit(mwave_exit);
 568
 569 static int __init mwave_init(void)
 570 {
 571         int i;
 572         int retval = 0;
 573         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
 574
 575         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");
 576
 577         memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));
 578
 579         pDrvData->bBDInitialized = FALSE;
 580         pDrvData->bResourcesClaimed = FALSE;
 581         pDrvData->bDSPEnabled = FALSE;
 582         pDrvData->bDSPReset = FALSE;
 583         pDrvData->bMwaveDevRegistered = FALSE;
 584         pDrvData->sLine = -1;
 585
 586         for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) {
 587                 pDrvData->IPCs[i].bIsEnabled = FALSE;
 588                 pDrvData->IPCs[i].bIsHere = FALSE;
 589                 pDrvData->IPCs[i].usIntCount = 0;       /* no ints received yet */
 590                 init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
 591         }
 592
 593         retval = tp3780I_InitializeBoardData(&pDrvData->rBDData);
 594         PRINTK_2(TRACE_MWAVE,
 595                 "mwavedd::mwave_init, return from tp3780I_InitializeBoardData"
 596                 " retval %x\n",
 597                 retval);
 598         if (retval) {
 599                 PRINTK_ERROR(KERN_ERR_MWAVE
 600                                 "mwavedd::mwave_init: Error:"
 601                                 " Failed to initialize board data\n");
 602                 goto cleanup_error;
 603         }
 604         pDrvData->bBDInitialized = TRUE;
 605
 606         retval = tp3780I_CalcResources(&pDrvData->rBDData);
 607         PRINTK_2(TRACE_MWAVE,
 608                 "mwavedd::mwave_init, return from tp3780I_CalcResources"
 609                 " retval %x\n",
 610                 retval);
 611         if (retval) {
 612                 PRINTK_ERROR(KERN_ERR_MWAVE
 613                                 "mwavedd:mwave_init: Error:"
 614                                 " Failed to calculate resources\n");
 615                 goto cleanup_error;
 616         }
 617
 618         retval = tp3780I_ClaimResources(&pDrvData->rBDData);
 619         PRINTK_2(TRACE_MWAVE,
 620                 "mwavedd::mwave_init, return from tp3780I_ClaimResources"
 621                 " retval %x\n",
 622                 retval);
 623         if (retval) {
 624                 PRINTK_ERROR(KERN_ERR_MWAVE
 625                                 "mwavedd:mwave_init: Error:"
 626                                 " Failed to claim resources\n");
 627                 goto cleanup_error;
 628         }
 629         pDrvData->bResourcesClaimed = TRUE;
 630
 631         retval = tp3780I_EnableDSP(&pDrvData->rBDData);
 632         PRINTK_2(TRACE_MWAVE,
 633                 "mwavedd::mwave_init, return from tp3780I_EnableDSP"
 634                 " retval %x\n",
 635                 retval);
 636         if (retval) {
 637                 PRINTK_ERROR(KERN_ERR_MWAVE
 638                                 "mwavedd:mwave_init: Error:"
 639                                 " Failed to enable DSP\n");
 640                 goto cleanup_error;
 641         }
 642         pDrvData->bDSPEnabled = TRUE;
 643
 644         if (misc_register(&mwave_misc_dev) < 0) {
 645                 PRINTK_ERROR(KERN_ERR_MWAVE
 646                                 "mwavedd:mwave_init: Error:"
 647                                 " Failed to register misc device\n");
 648                 goto cleanup_error;
 649         }
 650         pDrvData->bMwaveDevRegistered = TRUE;
 651
 652         pDrvData->sLine = register_serial_portandirq(
 653                 pDrvData->rBDData.rDspSettings.usUartBaseIO,
 654                 pDrvData->rBDData.rDspSettings.usUartIrq
 655         );
 656         if (pDrvData->sLine < 0) {
 657                 PRINTK_ERROR(KERN_ERR_MWAVE
 658                                 "mwavedd:mwave_init: Error:"
 659                                 " Failed to register serial driver\n");
 660                 goto cleanup_error;
 661         }
 662         /* uart is registered */
 663
 664 #if 0
 665         /* sysfs */
 666         memset(&mwave_device, 0, sizeof (struct device));
 667         dev_set_name(&mwave_device, "mwave");
 668
 669         if (device_register(&mwave_device))
 670                 goto cleanup_error;
 671         pDrvData->device_registered = TRUE;
 672         for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) {
 673                 if(device_create_file(&mwave_device, mwave_dev_attrs[i])) {
 674                         PRINTK_ERROR(KERN_ERR_MWAVE
 675                                         "mwavedd:mwave_init: Error:"
 676                                         " Failed to create sysfs file %s\n",
 677                                         mwave_dev_attrs[i]->attr.name);
 678                         goto cleanup_error;
 679                 }
 680                 pDrvData->nr_registered_attrs++;
 681         }
 682 #endif
 683
 684         /* SUCCESS! */
 685         return 0;
 686
 687 cleanup_error:
 688         PRINTK_ERROR(KERN_ERR_MWAVE
 689                         "mwavedd::mwave_init: Error:"
 690                         " Failed to initialize\n");
 691         mwave_exit(); /* clean up */
 692
 693         return -EIO;
 694 }
 695
 696 module_init(mwave_init);
 697