mwave: fix read buffer overflow
[linux-2.6.git] / 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 long mwave_ioctl(struct file *filp, unsigned int iocmd,
90                                                         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 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                         lock_kernel();
140                         retval = tp3780I_ResetDSP(&pDrvData->rBDData);
141                         unlock_kernel();
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                         lock_kernel();
153                         retval = tp3780I_StartDSP(&pDrvData->rBDData);
154                         unlock_kernel();
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                         lock_kernel();
169                         retval = tp3780I_QueryAbilities(&pDrvData->rBDData,
170                                         &rAbilities);
171                         unlock_kernel();
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                         lock_kernel();
203                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
204                                         iocmd,
205                                         pusBuffer,
206                                         rReadData.ulDataLength,
207                                         rReadData.usDspAddress);
208                         unlock_kernel();
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                         lock_kernel();
227                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
228                                 iocmd, pusBuffer,
229                                 rReadData.ulDataLength / 2,
230                                 rReadData.usDspAddress);
231                         unlock_kernel();
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                         lock_kernel();
250                         retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
251                                         iocmd, pusBuffer,
252                                         rWriteData.ulDataLength,
253                                         rWriteData.usDspAddress);
254                         unlock_kernel();
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                         lock_kernel();
273                         retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,
274                                         iocmd, pusBuffer,
275                                         rWriteData.ulDataLength,
276                                         rWriteData.usDspAddress);
277                         unlock_kernel();
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                         lock_kernel();
299                         pDrvData->IPCs[ipcnum].bIsHere = FALSE;
300                         pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
301                         unlock_kernel();
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                         lock_kernel();
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                         unlock_kernel();
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                         lock_kernel();
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                         unlock_kernel();
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 };
484
485
486 static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };
487
488 #if 0 /* totally b0rked */
489 /*
490  * sysfs support <paulsch@us.ibm.com>
491  */
492
493 struct device mwave_device;
494
495 /* Prevent code redundancy, create a macro for mwave_show_* functions. */
496 #define mwave_show_function(attr_name, format_string, field)            \
497 static ssize_t mwave_show_##attr_name(struct device *dev, struct device_attribute *attr, char *buf)     \
498 {                                                                       \
499         DSP_3780I_CONFIG_SETTINGS *pSettings =                          \
500                 &mwave_s_mdd.rBDData.rDspSettings;                      \
501         return sprintf(buf, format_string, pSettings->field);           \
502 }
503
504 /* All of our attributes are read attributes. */
505 #define mwave_dev_rd_attr(attr_name, format_string, field)              \
506         mwave_show_function(attr_name, format_string, field)            \
507 static DEVICE_ATTR(attr_name, S_IRUGO, mwave_show_##attr_name, NULL)
508
509 mwave_dev_rd_attr (3780i_dma, "%i\n", usDspDma);
510 mwave_dev_rd_attr (3780i_irq, "%i\n", usDspIrq);
511 mwave_dev_rd_attr (3780i_io, "%#.4x\n", usDspBaseIO);
512 mwave_dev_rd_attr (uart_irq, "%i\n", usUartIrq);
513 mwave_dev_rd_attr (uart_io, "%#.4x\n", usUartBaseIO);
514
515 static struct device_attribute * const mwave_dev_attrs[] = {
516         &dev_attr_3780i_dma,
517         &dev_attr_3780i_irq,
518         &dev_attr_3780i_io,
519         &dev_attr_uart_irq,
520         &dev_attr_uart_io,
521 };
522 #endif
523
524 /*
525 * mwave_init is called on module load
526 *
527 * mwave_exit is called on module unload
528 * mwave_exit is also used to clean up after an aborted mwave_init
529 */
530 static void mwave_exit(void)
531 {
532         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
533
534         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");
535
536 #if 0
537         for (i = 0; i < pDrvData->nr_registered_attrs; i++)
538                 device_remove_file(&mwave_device, mwave_dev_attrs[i]);
539         pDrvData->nr_registered_attrs = 0;
540
541         if (pDrvData->device_registered) {
542                 device_unregister(&mwave_device);
543                 pDrvData->device_registered = FALSE;
544         }
545 #endif
546
547         if ( pDrvData->sLine >= 0 ) {
548                 serial8250_unregister_port(pDrvData->sLine);
549         }
550         if (pDrvData->bMwaveDevRegistered) {
551                 misc_deregister(&mwave_misc_dev);
552         }
553         if (pDrvData->bDSPEnabled) {
554                 tp3780I_DisableDSP(&pDrvData->rBDData);
555         }
556         if (pDrvData->bResourcesClaimed) {
557                 tp3780I_ReleaseResources(&pDrvData->rBDData);
558         }
559         if (pDrvData->bBDInitialized) {
560                 tp3780I_Cleanup(&pDrvData->rBDData);
561         }
562
563         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n");
564 }
565
566 module_exit(mwave_exit);
567
568 static int __init mwave_init(void)
569 {
570         int i;
571         int retval = 0;
572         pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
573
574         PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");
575
576         memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));
577
578         pDrvData->bBDInitialized = FALSE;
579         pDrvData->bResourcesClaimed = FALSE;
580         pDrvData->bDSPEnabled = FALSE;
581         pDrvData->bDSPReset = FALSE;
582         pDrvData->bMwaveDevRegistered = FALSE;
583         pDrvData->sLine = -1;
584
585         for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) {
586                 pDrvData->IPCs[i].bIsEnabled = FALSE;
587                 pDrvData->IPCs[i].bIsHere = FALSE;
588                 pDrvData->IPCs[i].usIntCount = 0;       /* no ints received yet */
589                 init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
590         }
591
592         retval = tp3780I_InitializeBoardData(&pDrvData->rBDData);
593         PRINTK_2(TRACE_MWAVE,
594                 "mwavedd::mwave_init, return from tp3780I_InitializeBoardData"
595                 " retval %x\n",
596                 retval);
597         if (retval) {
598                 PRINTK_ERROR(KERN_ERR_MWAVE
599                                 "mwavedd::mwave_init: Error:"
600                                 " Failed to initialize board data\n");
601                 goto cleanup_error;
602         }
603         pDrvData->bBDInitialized = TRUE;
604
605         retval = tp3780I_CalcResources(&pDrvData->rBDData);
606         PRINTK_2(TRACE_MWAVE,
607                 "mwavedd::mwave_init, return from tp3780I_CalcResources"
608                 " retval %x\n",
609                 retval);
610         if (retval) {
611                 PRINTK_ERROR(KERN_ERR_MWAVE
612                                 "mwavedd:mwave_init: Error:"
613                                 " Failed to calculate resources\n");
614                 goto cleanup_error;
615         }
616
617         retval = tp3780I_ClaimResources(&pDrvData->rBDData);
618         PRINTK_2(TRACE_MWAVE,
619                 "mwavedd::mwave_init, return from tp3780I_ClaimResources"
620                 " retval %x\n",
621                 retval);
622         if (retval) {
623                 PRINTK_ERROR(KERN_ERR_MWAVE
624                                 "mwavedd:mwave_init: Error:"
625                                 " Failed to claim resources\n");
626                 goto cleanup_error;
627         }
628         pDrvData->bResourcesClaimed = TRUE;
629
630         retval = tp3780I_EnableDSP(&pDrvData->rBDData);
631         PRINTK_2(TRACE_MWAVE,
632                 "mwavedd::mwave_init, return from tp3780I_EnableDSP"
633                 " retval %x\n",
634                 retval);
635         if (retval) {
636                 PRINTK_ERROR(KERN_ERR_MWAVE
637                                 "mwavedd:mwave_init: Error:"
638                                 " Failed to enable DSP\n");
639                 goto cleanup_error;
640         }
641         pDrvData->bDSPEnabled = TRUE;
642
643         if (misc_register(&mwave_misc_dev) < 0) {
644                 PRINTK_ERROR(KERN_ERR_MWAVE
645                                 "mwavedd:mwave_init: Error:"
646                                 " Failed to register misc device\n");
647                 goto cleanup_error;
648         }
649         pDrvData->bMwaveDevRegistered = TRUE;
650
651         pDrvData->sLine = register_serial_portandirq(
652                 pDrvData->rBDData.rDspSettings.usUartBaseIO,
653                 pDrvData->rBDData.rDspSettings.usUartIrq
654         );
655         if (pDrvData->sLine < 0) {
656                 PRINTK_ERROR(KERN_ERR_MWAVE
657                                 "mwavedd:mwave_init: Error:"
658                                 " Failed to register serial driver\n");
659                 goto cleanup_error;
660         }
661         /* uart is registered */
662
663 #if 0
664         /* sysfs */
665         memset(&mwave_device, 0, sizeof (struct device));
666         dev_set_name(&mwave_device, "mwave");
667
668         if (device_register(&mwave_device))
669                 goto cleanup_error;
670         pDrvData->device_registered = TRUE;
671         for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) {
672                 if(device_create_file(&mwave_device, mwave_dev_attrs[i])) {
673                         PRINTK_ERROR(KERN_ERR_MWAVE
674                                         "mwavedd:mwave_init: Error:"
675                                         " Failed to create sysfs file %s\n",
676                                         mwave_dev_attrs[i]->attr.name);
677                         goto cleanup_error;
678                 }
679                 pDrvData->nr_registered_attrs++;
680         }
681 #endif
682
683         /* SUCCESS! */
684         return 0;
685
686 cleanup_error:
687         PRINTK_ERROR(KERN_ERR_MWAVE
688                         "mwavedd::mwave_init: Error:"
689                         " Failed to initialize\n");
690         mwave_exit(); /* clean up */
691
692         return -EIO;
693 }
694
695 module_init(mwave_init);
696