1 /*
2 *
3 * mwavedd.c -- mwave device driver
4 *
5 *
6 * Written By: Mike Sullivan IBM Corporation
7 *
8 * Copyright (C) 1999 IBM Corporation
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * NO WARRANTY
21 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
22 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
23 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
24 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
25 * solely responsible for determining the appropriateness of using and
26 * distributing the Program and assumes all risks associated with its
27 * exercise of rights under this Agreement, including but not limited to
28 * the risks and costs of program errors, damage to or loss of data,
29 * programs or equipment, and unavailability or interruption of operations.
30 *
31 * DISCLAIMER OF LIABILITY
32 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
33 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
35 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
36 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
37 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
38 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
39 *
40 * You should have received a copy of the GNU General Public License
41 * along with this program; if not, write to the Free Software
42 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
43 *
44 *
45 * 10/23/2000 - Alpha Release
46 * First release to the public
47 */
48
49 #include <linux/version.h>
50 #include <linux/module.h>
51 #include <linux/kernel.h>
52 #include <linux/fs.h>
53 #include <linux/init.h>
54 #include <linux/major.h>
55 #include <linux/miscdevice.h>
56 #include <linux/proc_fs.h>
57 #include <linux/serial.h>
58 #include <linux/sched.h>
59 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
60 #include <linux/spinlock.h>
61 #else
62 #include <asm/spinlock.h>
63 #endif
64 #include <linux/delay.h>
65 #include "smapi.h"
66 #include "mwavedd.h"
67 #include "3780i.h"
68 #include "tp3780i.h"
69
70 #ifndef __exit
71 #define __exit
72 #endif
73
74 MODULE_DESCRIPTION("3780i Advanced Communications Processor (Mwave) driver");
75 MODULE_AUTHOR("Mike Sullivan and Paul Schroeder");
76 MODULE_LICENSE("GPL");
77
78 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
79 static int mwave_get_info(char *buf, char **start, off_t offset, int len);
80 #else
81 static int mwave_read_proc(char *buf, char **start, off_t offset, int xlen, int unused);
82 static struct proc_dir_entry mwave_proc = {
83 0, /* unsigned short low_ino */
84 5, /* unsigned short namelen */
85 "mwave", /* const char *name */
86 S_IFREG | S_IRUGO, /* mode_t mode */
87 1, /* nlink_t nlink */
88 0, /* uid_t uid */
89 0, /* gid_t gid */
90 0, /* unsigned long size */
91 NULL, /* struct inode_operations *ops */
92 &mwave_read_proc /* int (*get_info) (...) */
93 };
94 #endif
95
96 /*
97 * These parameters support the setting of MWave resources. Note that no
98 * checks are made against other devices (ie. superio) for conflicts.
99 * We'll depend on users using the tpctl utility to do that for now
100 */
101 int mwave_debug = 0;
102 int mwave_3780i_irq = 0;
103 int mwave_3780i_io = 0;
104 int mwave_uart_irq = 0;
105 int mwave_uart_io = 0;
106 MODULE_PARM(mwave_debug, "i");
107 MODULE_PARM(mwave_3780i_irq, "i");
108 MODULE_PARM(mwave_3780i_io, "i");
109 MODULE_PARM(mwave_uart_irq, "i");
110 MODULE_PARM(mwave_uart_io, "i");
111
112 static int mwave_open(struct inode *inode, struct file *file);
113 static int mwave_close(struct inode *inode, struct file *file);
114 static int mwave_ioctl(struct inode *inode, struct file *filp,
115 unsigned int iocmd, unsigned long ioarg);
116
117 MWAVE_DEVICE_DATA mwave_s_mdd;
118
mwave_open(struct inode * inode,struct file * file)119 static int mwave_open(struct inode *inode, struct file *file)
120 {
121 unsigned int retval = 0;
122
123 PRINTK_3(TRACE_MWAVE,
124 "mwavedd::mwave_open, entry inode %x file %x\n",
125 (int) inode, (int) file);
126 PRINTK_2(TRACE_MWAVE,
127 "mwavedd::mwave_open, exit return retval %x\n", retval);
128
129 MOD_INC_USE_COUNT;
130 return retval;
131 }
132
mwave_close(struct inode * inode,struct file * file)133 static int mwave_close(struct inode *inode, struct file *file)
134 {
135 unsigned int retval = 0;
136
137 PRINTK_3(TRACE_MWAVE,
138 "mwavedd::mwave_close, entry inode %x file %x\n",
139 (int) inode, (int) file);
140
141 PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_close, exit retval %x\n",
142 retval);
143
144 MOD_DEC_USE_COUNT;
145 return retval;
146 }
147
mwave_ioctl(struct inode * inode,struct file * file,unsigned int iocmd,unsigned long ioarg)148 static int mwave_ioctl(struct inode *inode, struct file *file,
149 unsigned int iocmd, unsigned long ioarg)
150 {
151 unsigned int retval = 0;
152 pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
153
154 PRINTK_5(TRACE_MWAVE,
155 "mwavedd::mwave_ioctl, entry inode %x file %x cmd %x arg %x\n",
156 (int) inode, (int) file, iocmd, (int) ioarg);
157
158 switch (iocmd) {
159
160 case IOCTL_MW_RESET:
161 PRINTK_1(TRACE_MWAVE,
162 "mwavedd::mwave_ioctl, IOCTL_MW_RESET calling tp3780I_ResetDSP\n");
163 retval = tp3780I_ResetDSP(&pDrvData->rBDData);
164 PRINTK_2(TRACE_MWAVE,
165 "mwavedd::mwave_ioctl, IOCTL_MW_RESET retval %x from tp3780I_ResetDSP\n",
166 retval);
167 break;
168
169 case IOCTL_MW_RUN:
170 PRINTK_1(TRACE_MWAVE,
171 "mwavedd::mwave_ioctl, IOCTL_MW_RUN calling tp3780I_StartDSP\n");
172 retval = tp3780I_StartDSP(&pDrvData->rBDData);
173 PRINTK_2(TRACE_MWAVE,
174 "mwavedd::mwave_ioctl, IOCTL_MW_RUN retval %x from tp3780I_StartDSP\n",
175 retval);
176 break;
177
178 case IOCTL_MW_DSP_ABILITIES: {
179 MW_ABILITIES rAbilities;
180
181 PRINTK_1(TRACE_MWAVE,
182 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES calling tp3780I_QueryAbilities\n");
183 retval = tp3780I_QueryAbilities(&pDrvData->rBDData, &rAbilities);
184 PRINTK_2(TRACE_MWAVE,
185 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES retval %x from tp3780I_QueryAbilities\n",
186 retval);
187 if (retval == 0) {
188 if( copy_to_user((char *) ioarg, (char *) &rAbilities, sizeof(MW_ABILITIES)) )
189 return -EFAULT;
190 }
191 PRINTK_2(TRACE_MWAVE,
192 "mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES exit retval %x\n",
193 retval);
194 }
195 break;
196
197 case IOCTL_MW_READ_DATA:
198 case IOCTL_MW_READCLEAR_DATA: {
199 MW_READWRITE rReadData;
200 unsigned short *pusBuffer = 0;
201
202 if( copy_from_user((char *) &rReadData, (char *) ioarg, sizeof(MW_READWRITE)) )
203 return -EFAULT;
204 pusBuffer = (unsigned short *) (rReadData.pBuf);
205
206 PRINTK_4(TRACE_MWAVE,
207 "mwavedd::mwave_ioctl IOCTL_MW_READ_DATA, size %lx, ioarg %lx pusBuffer %p\n",
208 rReadData.ulDataLength, ioarg, pusBuffer);
209 retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, iocmd,
210 (void *) pusBuffer, rReadData.ulDataLength, rReadData.usDspAddress);
211 }
212 break;
213
214 case IOCTL_MW_READ_INST: {
215 MW_READWRITE rReadData;
216 unsigned short *pusBuffer = 0;
217
218 if( copy_from_user((char *) &rReadData, (char *) ioarg, sizeof(MW_READWRITE)) )
219 return -EFAULT;
220 pusBuffer = (unsigned short *) (rReadData.pBuf);
221
222 PRINTK_4(TRACE_MWAVE,
223 "mwavedd::mwave_ioctl IOCTL_MW_READ_INST, size %lx, ioarg %lx pusBuffer %p\n",
224 rReadData.ulDataLength / 2, ioarg,
225 pusBuffer);
226 retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
227 iocmd, pusBuffer,
228 rReadData.ulDataLength / 2,
229 rReadData.usDspAddress);
230 }
231 break;
232
233 case IOCTL_MW_WRITE_DATA: {
234 MW_READWRITE rWriteData;
235 unsigned short *pusBuffer = 0;
236
237 if( copy_from_user((char *) &rWriteData, (char *) ioarg, sizeof(MW_READWRITE)) )
238 return -EFAULT;
239 pusBuffer = (unsigned short *) (rWriteData.pBuf);
240
241 PRINTK_4(TRACE_MWAVE,
242 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA, size %lx, ioarg %lx pusBuffer %p\n",
243 rWriteData.ulDataLength, ioarg,
244 pusBuffer);
245 retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData, iocmd,
246 pusBuffer, rWriteData.ulDataLength, rWriteData.usDspAddress);
247 }
248 break;
249
250 case IOCTL_MW_WRITE_INST: {
251 MW_READWRITE rWriteData;
252 unsigned short *pusBuffer = 0;
253
254 if( copy_from_user((char *) &rWriteData, (char *) ioarg, sizeof(MW_READWRITE)) )
255 return -EFAULT;
256 pusBuffer = (unsigned short *) (rWriteData.pBuf);
257
258 PRINTK_4(TRACE_MWAVE,
259 "mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST, size %lx, ioarg %lx pusBuffer %p\n",
260 rWriteData.ulDataLength, ioarg,
261 pusBuffer);
262 retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData, iocmd,
263 pusBuffer, rWriteData.ulDataLength, 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 ipcnum %x entry usIntCount %x\n",
272 ipcnum,
273 pDrvData->IPCs[ipcnum].usIntCount);
274
275 if (ipcnum > 16) {
276 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl: IOCTL_MW_REGISTER_IPC: Error: Invalid ipcnum %x\n", ipcnum);
277 return -EINVAL;
278 }
279 pDrvData->IPCs[ipcnum].bIsHere = FALSE;
280 pDrvData->IPCs[ipcnum].bIsEnabled = TRUE;
281 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
282 current->nice = -20; /* boost to provide priority timing */
283 #else
284 current->priority = 0x28; /* boost to provide priority timing */
285 #endif
286
287 PRINTK_2(TRACE_MWAVE,
288 "mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC ipcnum %x exit\n",
289 ipcnum);
290 }
291 break;
292
293 case IOCTL_MW_GET_IPC: {
294 unsigned int ipcnum = (unsigned int) ioarg;
295 spinlock_t ipc_lock = SPIN_LOCK_UNLOCKED;
296 unsigned long flags;
297
298 PRINTK_3(TRACE_MWAVE,
299 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC ipcnum %x, usIntCount %x\n",
300 ipcnum,
301 pDrvData->IPCs[ipcnum].usIntCount);
302 if (ipcnum > 16) {
303 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl: IOCTL_MW_GET_IPC: Error: Invalid ipcnum %x\n", ipcnum);
304 return -EINVAL;
305 }
306
307 if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
308 PRINTK_2(TRACE_MWAVE,
309 "mwavedd::mwave_ioctl, thread for ipc %x going to sleep\n",
310 ipcnum);
311
312 spin_lock_irqsave(&ipc_lock, flags);
313 /* check whether an event was signalled by */
314 /* the interrupt handler while we were gone */
315 if (pDrvData->IPCs[ipcnum].usIntCount == 1) { /* first int has occurred (race condition) */
316 pDrvData->IPCs[ipcnum].usIntCount = 2; /* first int has been handled */
317 spin_unlock_irqrestore(&ipc_lock, flags);
318 PRINTK_2(TRACE_MWAVE,
319 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC ipcnum %x handling first int\n",
320 ipcnum);
321 } else { /* either 1st int has not yet occurred, or we have already handled the first int */
322 pDrvData->IPCs[ipcnum].bIsHere = TRUE;
323 interruptible_sleep_on(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
324 pDrvData->IPCs[ipcnum].bIsHere = FALSE;
325 if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
326 pDrvData->IPCs[ipcnum].
327 usIntCount = 2;
328 }
329 spin_unlock_irqrestore(&ipc_lock, flags);
330 PRINTK_2(TRACE_MWAVE,
331 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC ipcnum %x woke up and returning to application\n",
332 ipcnum);
333 }
334 PRINTK_2(TRACE_MWAVE,
335 "mwavedd::mwave_ioctl IOCTL_MW_GET_IPC, returning thread for ipc %x processing\n",
336 ipcnum);
337 }
338 }
339 break;
340
341 case IOCTL_MW_UNREGISTER_IPC: {
342 unsigned int ipcnum = (unsigned int) ioarg;
343
344 PRINTK_2(TRACE_MWAVE,
345 "mwavedd::mwave_ioctl IOCTL_MW_UNREGISTER_IPC ipcnum %x\n",
346 ipcnum);
347 if (ipcnum > 16) {
348 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl: IOCTL_MW_UNREGISTER_IPC: Error: Invalid ipcnum %x\n", ipcnum);
349 return -EINVAL;
350 }
351 if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
352 pDrvData->IPCs[ipcnum].bIsEnabled = FALSE;
353 if (pDrvData->IPCs[ipcnum].bIsHere == TRUE) {
354 wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
355 }
356 }
357 }
358 break;
359
360 default:
361 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_ioctl: Error: Unrecognized iocmd %x\n", iocmd);
362 return -ENOTTY;
363 break;
364 } /* switch */
365
366 PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, exit retval %x\n", retval);
367
368 return retval;
369 }
370
371
mwave_read(struct file * file,char * buf,size_t count,loff_t * ppos)372 static ssize_t mwave_read(struct file *file, char *buf, size_t count,
373 loff_t * ppos)
374 {
375 PRINTK_5(TRACE_MWAVE,
376 "mwavedd::mwave_read entry file %p, buf %p, count %x ppos %p\n",
377 file, buf, count, ppos);
378
379 return -EINVAL;
380 }
381
382
mwave_write(struct file * file,const char * buf,size_t count,loff_t * ppos)383 static ssize_t mwave_write(struct file *file, const char *buf,
384 size_t count, loff_t * ppos)
385 {
386 PRINTK_5(TRACE_MWAVE,
387 "mwavedd::mwave_write entry file %p, buf %p, count %x ppos %p\n",
388 file, buf, count, ppos);
389
390 return -EINVAL;
391 }
392
393
register_serial_portandirq(unsigned int port,int irq)394 static int register_serial_portandirq(unsigned int port, int irq)
395 {
396 struct serial_struct serial;
397
398 switch ( port ) {
399 case 0x3f8:
400 case 0x2f8:
401 case 0x3e8:
402 case 0x2e8:
403 /* OK */
404 break;
405 default:
406 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::register_serial_portandirq: Error: Illegal port %x\n", port );
407 return -1;
408 } /* switch */
409 /* port is okay */
410
411 switch ( irq ) {
412 case 3:
413 case 4:
414 case 5:
415 case 7:
416 /* OK */
417 break;
418 default:
419 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::register_serial_portandirq: Error: Illegal irq %x\n", irq );
420 return -1;
421 } /* switch */
422 /* irq is okay */
423
424 memset(&serial, 0, sizeof(serial));
425 serial.port = port;
426 serial.irq = irq;
427 serial.flags = ASYNC_SHARE_IRQ;
428
429 return register_serial(&serial);
430 }
431
432
433 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
434 static struct file_operations mwave_fops = {
435 owner:THIS_MODULE,
436 read:mwave_read,
437 write:mwave_write,
438 ioctl:mwave_ioctl,
439 open:mwave_open,
440 release:mwave_close
441 };
442 #else
443 static struct file_operations mwave_fops = {
444 NULL, /* lseek */
445 mwave_read, /* read */
446 mwave_write, /* write */
447 NULL, /* readdir */
448 NULL, /* poll */
449 mwave_ioctl, /* ioctl */
450 NULL, /* mmap */
451 mwave_open, /* open */
452 NULL, /* flush */
453 mwave_close /* release */
454 };
455 #endif
456
457 static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };
458
459 /*
460 * mwave_init is called on module load
461 *
462 * mwave_exit is called on module unload
463 * mwave_exit is also used to clean up after an aborted mwave_init
464 */
mwave_exit(void)465 static void mwave_exit(void)
466 {
467 pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
468
469 PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");
470
471 if (pDrvData->bProcEntryCreated) {
472 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
473 remove_proc_entry("mwave", NULL);
474 #else
475 proc_unregister(&proc_root, mwave_proc.low_ino);
476 #endif
477 }
478 if ( pDrvData->sLine >= 0 ) {
479 unregister_serial(pDrvData->sLine);
480 }
481 if (pDrvData->bMwaveDevRegistered) {
482 misc_deregister(&mwave_misc_dev);
483 }
484 if (pDrvData->bDSPEnabled) {
485 tp3780I_DisableDSP(&pDrvData->rBDData);
486 }
487 if (pDrvData->bResourcesClaimed) {
488 tp3780I_ReleaseResources(&pDrvData->rBDData);
489 }
490 if (pDrvData->bBDInitialized) {
491 tp3780I_Cleanup(&pDrvData->rBDData);
492 }
493
494 PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n");
495 }
496
497 module_exit(mwave_exit);
498
mwave_init(void)499 static int __init mwave_init(void)
500 {
501 int i;
502 int retval = 0;
503 int resultMiscRegister;
504 pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
505
506 memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));
507
508 PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");
509
510 pDrvData->bBDInitialized = FALSE;
511 pDrvData->bResourcesClaimed = FALSE;
512 pDrvData->bDSPEnabled = FALSE;
513 pDrvData->bDSPReset = FALSE;
514 pDrvData->bMwaveDevRegistered = FALSE;
515 pDrvData->sLine = -1;
516 pDrvData->bProcEntryCreated = FALSE;
517
518 for (i = 0; i < 16; i++) {
519 pDrvData->IPCs[i].bIsEnabled = FALSE;
520 pDrvData->IPCs[i].bIsHere = FALSE;
521 pDrvData->IPCs[i].usIntCount = 0; /* no ints received yet */
522 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
523 init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
524 #endif
525 }
526
527 retval = tp3780I_InitializeBoardData(&pDrvData->rBDData);
528 PRINTK_2(TRACE_MWAVE,
529 "mwavedd::mwave_init, return from tp3780I_InitializeBoardData retval %x\n",
530 retval);
531 if (retval) {
532 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_init: Error: Failed to initialize board data\n");
533 goto cleanup_error;
534 }
535 pDrvData->bBDInitialized = TRUE;
536
537 retval = tp3780I_CalcResources(&pDrvData->rBDData);
538 PRINTK_2(TRACE_MWAVE,
539 "mwavedd::mwave_init, return from tp3780I_CalcResources retval %x\n",
540 retval);
541 if (retval) {
542 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to calculate resources\n");
543 goto cleanup_error;
544 }
545
546 retval = tp3780I_ClaimResources(&pDrvData->rBDData);
547 PRINTK_2(TRACE_MWAVE,
548 "mwavedd::mwave_init, return from tp3780I_ClaimResources retval %x\n",
549 retval);
550 if (retval) {
551 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to claim resources\n");
552 goto cleanup_error;
553 }
554 pDrvData->bResourcesClaimed = TRUE;
555
556 retval = tp3780I_EnableDSP(&pDrvData->rBDData);
557 PRINTK_2(TRACE_MWAVE,
558 "mwavedd::mwave_init, return from tp3780I_EnableDSP retval %x\n",
559 retval);
560 if (retval) {
561 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to enable DSP\n");
562 goto cleanup_error;
563 }
564 pDrvData->bDSPEnabled = TRUE;
565
566 resultMiscRegister = misc_register(&mwave_misc_dev);
567 if (resultMiscRegister < 0) {
568 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to register misc device\n");
569 goto cleanup_error;
570 }
571 pDrvData->bMwaveDevRegistered = TRUE;
572
573 pDrvData->sLine = register_serial_portandirq(
574 pDrvData->rBDData.rDspSettings.usUartBaseIO,
575 pDrvData->rBDData.rDspSettings.usUartIrq
576 );
577 if (pDrvData->sLine < 0) {
578 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd:mwave_init: Error: Failed to register serial driver\n");
579 goto cleanup_error;
580 }
581 /* uart is registered */
582
583 if (
584 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
585 !create_proc_info_entry("mwave", 0, NULL, mwave_get_info)
586 #else
587 proc_register(&proc_root, &mwave_proc)
588 #endif
589 ) {
590 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_init: Error: Failed to register /proc/mwave\n");
591 goto cleanup_error;
592 }
593 pDrvData->bProcEntryCreated = TRUE;
594
595 /* SUCCESS! */
596 return 0;
597
598 cleanup_error:
599 PRINTK_ERROR(KERN_ERR_MWAVE "mwavedd::mwave_init: Error: Failed to initialize\n");
600 mwave_exit(); /* clean up */
601
602 return -EIO;
603 }
604
605 module_init(mwave_init);
606
607
608 /*
609 * proc entry stuff added by Ian Pilcher <pilcher@us.ibm.com>
610 */
611
612 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
mwave_get_info(char * buf,char ** start,off_t offset,int len)613 static int mwave_get_info(char *buf, char **start, off_t offset, int len)
614 {
615 DSP_3780I_CONFIG_SETTINGS *pSettings = &mwave_s_mdd.rBDData.rDspSettings;
616
617 char *out = buf;
618
619 out += sprintf(out, "3780i_IRQ %i\n", pSettings->usDspIrq);
620 out += sprintf(out, "3780i_DMA %i\n", pSettings->usDspDma);
621 out += sprintf(out, "3780i_IO %#.4x\n", pSettings->usDspBaseIO);
622 out += sprintf(out, "UART_IRQ %i\n", pSettings->usUartIrq);
623 out += sprintf(out, "UART_IO %#.4x\n", pSettings->usUartBaseIO);
624
625 return out - buf;
626 }
627 #else /* kernel version < 2.4.0 */
mwave_read_proc(char * buf,char ** start,off_t offset,int xlen,int unused)628 static int mwave_read_proc(char *buf, char **start, off_t offset,
629 int xlen, int unused)
630 {
631 DSP_3780I_CONFIG_SETTINGS *pSettings = &mwave_s_mdd.rBDData.rDspSettings;
632 int len;
633
634 len = sprintf(buf, "3780i_IRQ %i\n", pSettings->usDspIrq);
635 len += sprintf(&buf[len], "3780i_DMA %i\n", pSettings->usDspDma);
636 len += sprintf(&buf[len], "3780i_IO %#.4x\n", pSettings->usDspBaseIO);
637 len += sprintf(&buf[len], "UART_IRQ %i\n", pSettings->usUartIrq);
638 len += sprintf(&buf[len], "UART_IO %#.4x\n", pSettings->usUartBaseIO);
639
640 return len;
641 }
642 #endif
643