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/smp_lock.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 int mwave_debug = 0;
  77 int mwave_3780i_irq = 0;
  78 int mwave_3780i_io = 0;
  79 int mwave_uart_irq = 0;
  80 int mwave_uart_io = 0;
  81 module_param(mwave_debug, int, 0);
  82 module_param(mwave_3780i_irq, int, 0);
  83 module_param(mwave_3780i_io, int, 0);
  84 module_param(mwave_uart_irq, int, 0);
  85 module_param(mwave_uart_io, int, 0);
  86
  87 static int mwave_open(struct inode *inode, struct file *file);
  88 static int mwave_close(struct inode *inode, struct file *file);
  89 static int mwave_ioctl(struct inode *inode, struct file *filp,
  90                        unsigned int iocmd, unsigned long ioarg);
  91
  92 MWAVE_DEVICE_DATA mwave_s_mdd;
  93
  94 static int mwave_open(struct inode *inode, struct file *file)
  95 {
  96         unsigned int retval = 0;
  97
  98         PRINTK_3(TRACE_MWAVE,
  99                 "mwavedd::mwave_open, entry inode %p file %p\n",
 100                  inode, file);
 101         PRINTK_2(TRACE_MWAVE,
 102                 "mwavedd::mwave_open, exit return retval %x\n", retval);
 103
 104         cycle_kernel_lock();
 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 int mwave_ioctl(struct inode *inode, struct file *file,
 123                        unsigned int iocmd, 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_5(TRACE_MWAVE,
 130                 "mwavedd::mwave_ioctl, entry inode %p file %p cmd %x arg %x\n",
 131                  inode,  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                         retval = tp3780I_ResetDSP(&pDrvData->rBDData);
 140                         PRINTK_2(TRACE_MWAVE,
 141                                 "mwavedd::mwave_ioctl, IOCTL_MW_RESET"
 142                                 " retval %x from tp3780I_ResetDSP\n",
 143                                 retval);
 144                         break;
 145
 146                 case IOCTL_MW_RUN:
 147                         PRINTK_1(TRACE_MWAVE,
 148                                 "mwavedd::mwave_ioctl, IOCTL_MW_RUN"
 149                                 " calling tp3780I_StartDSP\n");
 150                         retval = tp3780I_StartDSP(&pDrvData->rBDData);
 151                         PRINTK_2(TRACE_MWAVE,
 152                                 "mwavedd::mwave_ioctl, IOCTL_MW_RUN"
 153                                 " retval %x from tp3780I_StartDSP\n",
 154                                 retval);
 155                         break;
 156
 157                 case IOCTL_MW_DSP_ABILITIES: {
 158                         MW_ABILITIES rAbilities;
 159
 160                         PRINTK_1(TRACE_MWAVE,
 161                                 "mwavedd::mwave_ioctl,"
 162                                 " IOCTL_MW_DSP_ABILITIES calling"
 163                                 " tp3780I_QueryAbilities\n");
 164                         retval = tp3780I_QueryAbilities(&pDrvData->rBDData,
 165                                         &rAbilities);
 166                         PRINTK_2(TRACE_MWAVE,
 167                                 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
 168                                 " retval %x from tp3780I_QueryAbilities\n",
 169                                 retval);
 170                         if (retval == 0) {
 171                                 if( copy_to_user(arg, &rAbilities,
 172                                                         sizeof(MW_ABILITIES)) )
 173                                         return -EFAULT;
 174                         }
 175                         PRINTK_2(TRACE_MWAVE,
 176                                 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
 177                                 " exit retval %x\n",
 178                                 retval);
 179                 }
 180                         break;
 181
 182                 case IOCTL_MW_READ_DATA:
 183                 case IOCTL_MW_READCLEAR_DATA: {
 184                         MW_READWRITE rReadData;
 185                         unsigned short __user *pusBuffer = NULL;
 186
 187                         if( copy_from_user(&rReadData, arg,
 188                                                 sizeof(MW_READWRITE)) )
 189                                 return -EFAULT;
 190                         pusBuffer = (unsigned short __user *) (rReadData.pBuf);
 191
 192                         PRINTK_4(TRACE_MWAVE,
 193                                 "mwavedd::mwave_ioctl IOCTL_MW_READ_DATA,"
 194                                 " size %lx, ioarg %lx pusBuffer %p\n",
 195                                 rReadData.ulDataLength, ioarg, pusBuffer);
 196                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 197                                         iocmd,
 198                                         pusBuffer,
 199                                         rReadData.ulDataLength,
 200                                         rReadData.usDspAddress);
 201                 }
 202                         break;
 203
 204                 case IOCTL_MW_READ_INST: {
 205                         MW_READWRITE rReadData;
 206                         unsigned short __user *pusBuffer = NULL;
 207
 208                         if( copy_from_user(&rReadData, arg,
 209                                                 sizeof(MW_READWRITE)) )
 210                                 return -EFAULT;
 211                         pusBuffer = (unsigned short __user *) (rReadData.pBuf);
 212
 213                         PRINTK_4(TRACE_MWAVE,
 214                                 "mwavedd::mwave_ioctl IOCTL_MW_READ_INST,"
 215                                 " size %lx, ioarg %lx pusBuffer %p\n",
 216                                 rReadData.ulDataLength / 2, ioarg,
 217                                 pusBuffer);
 218                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 219                                 iocmd, pusBuffer,
 220                                 rReadData.ulDataLength / 2,
 221                                 rReadData.usDspAddress);
 222                 }
 223                         break;
 224
 225                 case IOCTL_MW_WRITE_DATA: {
 226                         MW_READWRITE rWriteData;
 227                         unsigned short __user *pusBuffer = NULL;
 228
 229                         if( copy_from_user(&rWriteData, arg,
 230                                                 sizeof(MW_READWRITE)) )
 231                                 return -EFAULT;
 232                         pusBuffer = (unsigned short __user *) (rWriteData.pBuf);
 233
 234                         PRINTK_4(TRACE_MWAVE,
 235                                 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA,"
 236                                 " size %lx, ioarg %lx pusBuffer %p\n",
 237                                 rWriteData.ulDataLength, ioarg,
 238                                 pusBuffer);
 239                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
 240                                         iocmd, pusBuffer,
 241                                         rWriteData.ulDataLength,
 242                                         rWriteData.usDspAddress);
 243                 }
 244                         break;
 245
 246                 case IOCTL_MW_WRITE_INST: {
 247                         MW_READWRITE rWriteData;
 248                         unsigned short __user *pusBuffer = NULL;
 249
 250                         if( copy_from_user(&rWriteData, arg,
 251                                                 sizeof(MW_READWRITE)) )
 252                                 return -EFAULT;
 253                         pusBuffer = (unsigned short __user *)(rWriteData.pBuf);
 254
 255                         PRINTK_4(TRACE_MWAVE,
 256                                 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST,"
 257                                 " size %lx, ioarg %lx pusBuffer %p\n",
 258                                 rWriteData.ulDataLength, ioarg,
 259                                 pusBuffer);
 260                         retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,
 261                                         iocmd, pusBuffer,
 262                                         rWriteData.ulDataLength,
 263                                         rWriteData.usDspAddress);
 264                 }
 265                         break;
 266
 267                 case IOCTL_MW_REGISTER_IPC: {
 268                         unsigned int ipcnum = (unsigned int) ioarg;
 269
 270                         PRINTK_3(TRACE_MWAVE,
 271                                 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
 272                                 " ipcnum %x entry usIntCount %x\n",
 273                                 ipcnum,
 274                                 pDrvData->IPCs[ipcnum].usIntCount);
 275
 276                         if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
 277                                 PRINTK_ERROR(KERN_ERR_MWAVE
 278                                                 "mwavedd::mwave_ioctl:"
 279                                                 " IOCTL_MW_REGISTER_IPC:"
 280                                                 " Error: Invalid ipcnum %x\n",
 281                                                 ipcnum);
 282                                 return -EINVAL;
 283                         }
 284                         pDrvData->IPCs[ipcnum].bIsHere = FALSE;
 285                         pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
 286
 287                         PRINTK_2(TRACE_MWAVE,
 288                                 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
 289                                 " ipcnum %x exit\n",
 290                                 ipcnum);
 291                 }
 292                         break;
 293
 294                 case IOCTL_MW_GET_IPC: {
 295                         unsigned int ipcnum = (unsigned int) ioarg;
 296
 297                         PRINTK_3(TRACE_MWAVE,
 298                                 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
 299                                 " ipcnum %x, usIntCount %x\n",
 300                                 ipcnum,
 301                                 pDrvData->IPCs[ipcnum].usIntCount);
 302                         if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
 303                                 PRINTK_ERROR(KERN_ERR_MWAVE
 304                                                 "mwavedd::mwave_ioctl:"
 305                                                 " IOCTL_MW_GET_IPC: Error:"
 306                                                 " Invalid ipcnum %x\n", ipcnum);
 307                                 return -EINVAL;
 308                         }
 309
 310                         if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
 311                                 DECLARE_WAITQUEUE(wait, current);
 312
 313                                 PRINTK_2(TRACE_MWAVE,
 314                                         "mwavedd::mwave_ioctl, thread for"
 315                                         " ipc %x going to sleep\n",
 316                                         ipcnum);
 317                                 add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
 318                                 pDrvData->IPCs[ipcnum].bIsHere = TRUE;
 319                                 set_current_state(TASK_INTERRUPTIBLE);
 320                                 /* check whether an event was signalled by */
 321                                 /* the interrupt handler while we were gone */
 322                                 if (pDrvData->IPCs[ipcnum].usIntCount == 1) {   /* first int has occurred (race condition) */
 323                                         pDrvData->IPCs[ipcnum].usIntCount = 2;  /* first int has been handled */
 324                                         PRINTK_2(TRACE_MWAVE,
 325                                                 "mwavedd::mwave_ioctl"
 326                                                 " IOCTL_MW_GET_IPC ipcnum %x"
 327                                                 " handling first int\n",
 328                                                 ipcnum);
 329                                 } else {        /* either 1st int has not yet occurred, or we have already handled the first int */
 330                                         schedule();
 331                                         if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
 332                                                 pDrvData->IPCs[ipcnum].usIntCount = 2;
 333                                         }
 334                                         PRINTK_2(TRACE_MWAVE,
 335                                                 "mwavedd::mwave_ioctl"
 336                                                 " IOCTL_MW_GET_IPC ipcnum %x"
 337                                                 " woke up and returning to"
 338                                                 " application\n",
 339                                                 ipcnum);
 340                                 }
 341                                 pDrvData->IPCs[ipcnum].bIsHere = FALSE;
 342                                 remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
 343                                 set_current_state(TASK_RUNNING);
 344                                 PRINTK_2(TRACE_MWAVE,
 345                                         "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC,"
 346                                         " returning thread for ipc %x"
 347                                         " processing\n",
 348                                         ipcnum);
 349                         }
 350                 }
 351                         break;
 352
 353                 case IOCTL_MW_UNREGISTER_IPC: {
 354                         unsigned int ipcnum = (unsigned int) ioarg;
 355
 356                         PRINTK_2(TRACE_MWAVE,
 357                                 "mwavedd::mwave_ioctl IOCTL_MW_UNREGISTER_IPC"
 358                                 " ipcnum %x\n",
 359                                 ipcnum);
 360                         if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
 361                                 PRINTK_ERROR(KERN_ERR_MWAVE
 362                                                 "mwavedd::mwave_ioctl:"
 363                                                 " IOCTL_MW_UNREGISTER_IPC:"
 364                                                 " Error: Invalid ipcnum %x\n",
 365                                                 ipcnum);
 366                                 return -EINVAL;
 367                         }
 368                         if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
 369                                 pDrvData->IPCs[ipcnum].bIsEnabled = FALSE;
 370                                 if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) {
 371                                         wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
 372                                 }
 373                         }
 374                 }
 375                         break;
 376
 377                 default:
 378                         PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl:"
 379                                         " Error: Unrecognized iocmd %x\n",
 380                                         iocmd);
 381                         return -ENOTTY;
 382                         break;
 383         } /* switch */
 384
 385         PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, exit retval %x\n", retval);
 386
 387         return retval;
 388 }
 389
 390
 391 static ssize_t mwave_read(struct file *file, char __user *buf, size_t count,
 392                           loff_t * ppos)
 393 {
 394         PRINTK_5(TRACE_MWAVE,
 395                 "mwavedd::mwave_read entry file %p, buf %p, count %zx ppos %p\n",
 396                 file, buf, count, ppos);
 397
 398         return -EINVAL;
 399 }
 400
 401
 402 static ssize_t mwave_write(struct file *file, const char __user *buf,
 403                            size_t count, loff_t * ppos)
 404 {
 405         PRINTK_5(TRACE_MWAVE,
 406                 "mwavedd::mwave_write entry file %p, buf %p,"
 407                 " count %zx ppos %p\n",
 408                 file, buf, count, ppos);
 409
 410         return -EINVAL;
 411 }
 412
 413
 414 static int register_serial_portandirq(unsigned int port, int irq)
 415 {
 416         struct uart_port uart;
 417
 418         switch ( port ) {
 419                 case 0x3f8:
 420                 case 0x2f8:
 421                 case 0x3e8:
 422                 case 0x2e8:
 423                         /* OK */
 424                         break;
 425                 default:
 426                         PRINTK_ERROR(KERN_ERR_MWAVE
 427                                         "mwavedd::register_serial_portandirq:"
 428                                         " Error: Illegal port %x\n", port );
 429                         return -1;
 430         } /* switch */
 431         /* port is okay */
 432
 433         switch ( irq ) {
 434                 case 3:
 435                 case 4:
 436                 case 5:
 437                 case 7:
 438                         /* OK */
 439                         break;
 440                 default:
 441                         PRINTK_ERROR(KERN_ERR_MWAVE
 442                                         "mwavedd::register_serial_portandirq:"
 443                                         " Error: Illegal irq %x\n", irq );
 444                         return -1;
 445         } /* switch */
 446         /* irq is okay */
 447
 448         memset(&uart, 0, sizeof(struct uart_port));
 449
 450         uart.uartclk =  1843200;
 451         uart.iobase = port;
 452         uart.irq = irq;
 453         uart.iotype = UPIO_PORT;
 454         uart.flags =  UPF_SHARE_IRQ;
 455         return serial8250_register_port(&uart);
 456 }
 457
 458
 459 static const struct file_operations mwave_fops = {
 460         .owner          = THIS_MODULE,
 461         .read           = mwave_read,
 462         .write          = mwave_write,
 463         .ioctl          = mwave_ioctl,
 464         .open           = mwave_open,
 465         .release        = mwave_close
 466 };
 467
 468
 469 static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };
 470
 471 #if 0 /* totally b0rked */
 472 /*
 473  * sysfs support <paulsch@us.ibm.com>
 474  */
 475
 476 struct device mwave_device;
 477
 478 /* Prevent code redundancy, create a macro for mwave_show_* functions. */
 479 #define mwave_show_function(attr_name, format_string, field)            \
 480 static ssize_t mwave_show_##attr_name(struct device *dev, struct device_attribute *attr, char *buf)     \
 481 {                                                                       \
 482         DSP_3780I_CONFIG_SETTINGS *pSettings =                          \
 483                 &mwave_s_mdd.rBDData.rDspSettings;                      \
 484         return sprintf(buf, format_string, pSettings->field);           \
 485 }
 486
 487 /* All of our attributes are read attributes. */
 488 #define mwave_dev_rd_attr(attr_name, format_string, field)              \
 489         mwave_show_function(attr_name, format_string, field)            \
 490 static DEVICE_ATTR(attr_name, S_IRUGO, mwave_show_##attr_name, NULL)
 491
 492 mwave_dev_rd_attr (3780i_dma, "%i\n", usDspDma);
 493 mwave_dev_rd_attr (3780i_irq, "%i\n", usDspIrq);
 494 mwave_dev_rd_attr (3780i_io, "%#.4x\n", usDspBaseIO);
 495 mwave_dev_rd_attr (uart_irq, "%i\n", usUartIrq);
 496 mwave_dev_rd_attr (uart_io, "%#.4x\n", usUartBaseIO);
 497
 498 static struct device_attribute * const mwave_dev_attrs[] = {
 499         &dev_attr_3780i_dma,
 500         &dev_attr_3780i_irq,
 501         &dev_attr_3780i_io,
 502         &dev_attr_uart_irq,
 503         &dev_attr_uart_io,
 504 };
 505 #endif
 506
 507 /*
 508 * mwave_init is called on module load
 509 *
 510 * mwave_exit is called on module unload
 511 * mwave_exit is also used to clean up after an aborted mwave_init
 512 */
 513 static void mwave_exit(void)
 514 {
 515         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
 516
 517         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");
 518
 519 #if 0
 520         for (i = 0; i < pDrvData->nr_registered_attrs; i++)
 521                 device_remove_file(&mwave_device, mwave_dev_attrs[i]);
 522         pDrvData->nr_registered_attrs = 0;
 523
 524         if (pDrvData->device_registered) {
 525                 device_unregister(&mwave_device);
 526                 pDrvData->device_registered = FALSE;
 527         }
 528 #endif
 529
 530         if ( pDrvData->sLine >= 0 ) {
 531                 serial8250_unregister_port(pDrvData->sLine);
 532         }
 533         if (pDrvData->bMwaveDevRegistered) {
 534                 misc_deregister(&mwave_misc_dev);
 535         }
 536         if (pDrvData->bDSPEnabled) {
 537                 tp3780I_DisableDSP(&pDrvData->rBDData);
 538         }
 539         if (pDrvData->bResourcesClaimed) {
 540                 tp3780I_ReleaseResources(&pDrvData->rBDData);
 541         }
 542         if (pDrvData->bBDInitialized) {
 543                 tp3780I_Cleanup(&pDrvData->rBDData);
 544         }
 545
 546         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n");
 547 }
 548
 549 module_exit(mwave_exit);
 550
 551 static int __init mwave_init(void)
 552 {
 553         int i;
 554         int retval = 0;
 555         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
 556
 557         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");
 558
 559         memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));
 560
 561         pDrvData->bBDInitialized = FALSE;
 562         pDrvData->bResourcesClaimed = FALSE;
 563         pDrvData->bDSPEnabled = FALSE;
 564         pDrvData->bDSPReset = FALSE;
 565         pDrvData->bMwaveDevRegistered = FALSE;
 566         pDrvData->sLine = -1;
 567
 568         for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) {
 569                 pDrvData->IPCs[i].bIsEnabled = FALSE;
 570                 pDrvData->IPCs[i].bIsHere = FALSE;
 571                 pDrvData->IPCs[i].usIntCount = 0;       /* no ints received yet */
 572                 init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
 573         }
 574
 575         retval = tp3780I_InitializeBoardData(&pDrvData->rBDData);
 576         PRINTK_2(TRACE_MWAVE,
 577                 "mwavedd::mwave_init, return from tp3780I_InitializeBoardData"
 578                 " retval %x\n",
 579                 retval);
 580         if (retval) {
 581                 PRINTK_ERROR(KERN_ERR_MWAVE
 582                                 "mwavedd::mwave_init: Error:"
 583                                 " Failed to initialize board data\n");
 584                 goto cleanup_error;
 585         }
 586         pDrvData->bBDInitialized = TRUE;
 587
 588         retval = tp3780I_CalcResources(&pDrvData->rBDData);
 589         PRINTK_2(TRACE_MWAVE,
 590                 "mwavedd::mwave_init, return from tp3780I_CalcResources"
 591                 " retval %x\n",
 592                 retval);
 593         if (retval) {
 594                 PRINTK_ERROR(KERN_ERR_MWAVE
 595                                 "mwavedd:mwave_init: Error:"
 596                                 " Failed to calculate resources\n");
 597                 goto cleanup_error;
 598         }
 599
 600         retval = tp3780I_ClaimResources(&pDrvData->rBDData);
 601         PRINTK_2(TRACE_MWAVE,
 602                 "mwavedd::mwave_init, return from tp3780I_ClaimResources"
 603                 " retval %x\n",
 604                 retval);
 605         if (retval) {
 606                 PRINTK_ERROR(KERN_ERR_MWAVE
 607                                 "mwavedd:mwave_init: Error:"
 608                                 " Failed to claim resources\n");
 609                 goto cleanup_error;
 610         }
 611         pDrvData->bResourcesClaimed = TRUE;
 612
 613         retval = tp3780I_EnableDSP(&pDrvData->rBDData);
 614         PRINTK_2(TRACE_MWAVE,
 615                 "mwavedd::mwave_init, return from tp3780I_EnableDSP"
 616                 " retval %x\n",
 617                 retval);
 618         if (retval) {
 619                 PRINTK_ERROR(KERN_ERR_MWAVE
 620                                 "mwavedd:mwave_init: Error:"
 621                                 " Failed to enable DSP\n");
 622                 goto cleanup_error;
 623         }
 624         pDrvData->bDSPEnabled = TRUE;
 625
 626         if (misc_register(&mwave_misc_dev) < 0) {
 627                 PRINTK_ERROR(KERN_ERR_MWAVE
 628                                 "mwavedd:mwave_init: Error:"
 629                                 " Failed to register misc device\n");
 630                 goto cleanup_error;
 631         }
 632         pDrvData->bMwaveDevRegistered = TRUE;
 633
 634         pDrvData->sLine = register_serial_portandirq(
 635                 pDrvData->rBDData.rDspSettings.usUartBaseIO,
 636                 pDrvData->rBDData.rDspSettings.usUartIrq
 637         );
 638         if (pDrvData->sLine < 0) {
 639                 PRINTK_ERROR(KERN_ERR_MWAVE
 640                                 "mwavedd:mwave_init: Error:"
 641                                 " Failed to register serial driver\n");
 642                 goto cleanup_error;
 643         }
 644         /* uart is registered */
 645
 646 #if 0
 647         /* sysfs */
 648         memset(&mwave_device, 0, sizeof (struct device));
 649         snprintf(mwave_device.bus_id, BUS_ID_SIZE, "mwave");
 650
 651         if (device_register(&mwave_device))
 652                 goto cleanup_error;
 653         pDrvData->device_registered = TRUE;
 654         for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) {
 655                 if(device_create_file(&mwave_device, mwave_dev_attrs[i])) {
 656                         PRINTK_ERROR(KERN_ERR_MWAVE
 657                                         "mwavedd:mwave_init: Error:"
 658                                         " Failed to create sysfs file %s\n",
 659                                         mwave_dev_attrs[i]->attr.name);
 660                         goto cleanup_error;
 661                 }
 662                 pDrvData->nr_registered_attrs++;
 663         }
 664 #endif
 665
 666         /* SUCCESS! */
 667         return 0;
 668
 669 cleanup_error:
 670         PRINTK_ERROR(KERN_ERR_MWAVE
 671                         "mwavedd::mwave_init: Error:"
 672                         " Failed to initialize\n");
 673         mwave_exit(); /* clean up */
 674
 675         return -EIO;
 676 }
 677
 678 module_init(mwave_init);
 679