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 
mwave_open(struct inode * inode,struct file * file)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 
mwave_close(struct inode * inode,struct file * file)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 
mwave_ioctl(struct file * file,unsigned int iocmd,unsigned long ioarg)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 
mwave_read(struct file * file,char __user * buf,size_t count,loff_t * ppos)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 
mwave_write(struct file * file,const char __user * buf,size_t count,loff_t * ppos)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 
register_serial_portandirq(unsigned int port,int irq)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 */
mwave_exit(void)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 
mwave_init(void)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 
698