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 <linux/nospec.h>
63 #include "smapi.h"
64 #include "mwavedd.h"
65 #include "3780i.h"
66 #include "tp3780i.h"
67 
68 MODULE_DESCRIPTION("3780i Advanced Communications Processor (Mwave) driver");
69 MODULE_AUTHOR("Mike Sullivan and Paul Schroeder");
70 MODULE_LICENSE("GPL");
71 
72 /*
73 * These parameters support the setting of MWave resources. Note that no
74 * checks are made against other devices (ie. superio) for conflicts.
75 * We'll depend on users using the tpctl utility to do that for now
76 */
77 static DEFINE_MUTEX(mwave_mutex);
78 int mwave_debug = 0;
79 int mwave_3780i_irq = 0;
80 int mwave_3780i_io = 0;
81 int mwave_uart_irq = 0;
82 int mwave_uart_io = 0;
83 module_param(mwave_debug, int, 0);
84 module_param_hw(mwave_3780i_irq, int, irq, 0);
85 module_param_hw(mwave_3780i_io, int, ioport, 0);
86 module_param_hw(mwave_uart_irq, int, irq, 0);
87 module_param_hw(mwave_uart_io, int, ioport, 0);
88 
89 static int mwave_open(struct inode *inode, struct file *file);
90 static int mwave_close(struct inode *inode, struct file *file);
91 static long mwave_ioctl(struct file *filp, unsigned int iocmd,
92 							unsigned long ioarg);
93 
94 MWAVE_DEVICE_DATA mwave_s_mdd;
95 
mwave_open(struct inode * inode,struct file * file)96 static int mwave_open(struct inode *inode, struct file *file)
97 {
98 	unsigned int retval = 0;
99 
100 	PRINTK_3(TRACE_MWAVE,
101 		"mwavedd::mwave_open, entry inode %p file %p\n",
102 		 inode, file);
103 	PRINTK_2(TRACE_MWAVE,
104 		"mwavedd::mwave_open, exit return retval %x\n", retval);
105 
106 	return retval;
107 }
108 
mwave_close(struct inode * inode,struct file * file)109 static int mwave_close(struct inode *inode, struct file *file)
110 {
111 	unsigned int retval = 0;
112 
113 	PRINTK_3(TRACE_MWAVE,
114 		"mwavedd::mwave_close, entry inode %p file %p\n",
115 		 inode,  file);
116 
117 	PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_close, exit retval %x\n",
118 		retval);
119 
120 	return retval;
121 }
122 
mwave_ioctl(struct file * file,unsigned int iocmd,unsigned long ioarg)123 static long mwave_ioctl(struct file *file, unsigned int iocmd,
124 							unsigned long ioarg)
125 {
126 	unsigned int retval = 0;
127 	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
128 	void __user *arg = (void __user *)ioarg;
129 
130 	PRINTK_4(TRACE_MWAVE,
131 		"mwavedd::mwave_ioctl, entry file %p cmd %x arg %x\n",
132 		file, iocmd, (int) ioarg);
133 
134 	switch (iocmd) {
135 
136 		case IOCTL_MW_RESET:
137 			PRINTK_1(TRACE_MWAVE,
138 				"mwavedd::mwave_ioctl, IOCTL_MW_RESET"
139 				" calling tp3780I_ResetDSP\n");
140 			mutex_lock(&mwave_mutex);
141 			retval = tp3780I_ResetDSP(&pDrvData->rBDData);
142 			mutex_unlock(&mwave_mutex);
143 			PRINTK_2(TRACE_MWAVE,
144 				"mwavedd::mwave_ioctl, IOCTL_MW_RESET"
145 				" retval %x from tp3780I_ResetDSP\n",
146 				retval);
147 			break;
148 
149 		case IOCTL_MW_RUN:
150 			PRINTK_1(TRACE_MWAVE,
151 				"mwavedd::mwave_ioctl, IOCTL_MW_RUN"
152 				" calling tp3780I_StartDSP\n");
153 			mutex_lock(&mwave_mutex);
154 			retval = tp3780I_StartDSP(&pDrvData->rBDData);
155 			mutex_unlock(&mwave_mutex);
156 			PRINTK_2(TRACE_MWAVE,
157 				"mwavedd::mwave_ioctl, IOCTL_MW_RUN"
158 				" retval %x from tp3780I_StartDSP\n",
159 				retval);
160 			break;
161 
162 		case IOCTL_MW_DSP_ABILITIES: {
163 			MW_ABILITIES rAbilities;
164 
165 			PRINTK_1(TRACE_MWAVE,
166 				"mwavedd::mwave_ioctl,"
167 				" IOCTL_MW_DSP_ABILITIES calling"
168 				" tp3780I_QueryAbilities\n");
169 			mutex_lock(&mwave_mutex);
170 			retval = tp3780I_QueryAbilities(&pDrvData->rBDData,
171 					&rAbilities);
172 			mutex_unlock(&mwave_mutex);
173 			PRINTK_2(TRACE_MWAVE,
174 				"mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
175 				" retval %x from tp3780I_QueryAbilities\n",
176 				retval);
177 			if (retval == 0) {
178 				if( copy_to_user(arg, &rAbilities,
179 							sizeof(MW_ABILITIES)) )
180 					return -EFAULT;
181 			}
182 			PRINTK_2(TRACE_MWAVE,
183 				"mwavedd::mwave_ioctl, IOCTL_MW_DSP_ABILITIES"
184 				" exit retval %x\n",
185 				retval);
186 		}
187 			break;
188 
189 		case IOCTL_MW_READ_DATA:
190 		case IOCTL_MW_READCLEAR_DATA: {
191 			MW_READWRITE rReadData;
192 			unsigned short __user *pusBuffer = NULL;
193 
194 			if( copy_from_user(&rReadData, arg,
195 						sizeof(MW_READWRITE)) )
196 				return -EFAULT;
197 			pusBuffer = (unsigned short __user *) (rReadData.pBuf);
198 
199 			PRINTK_4(TRACE_MWAVE,
200 				"mwavedd::mwave_ioctl IOCTL_MW_READ_DATA,"
201 				" size %lx, ioarg %lx pusBuffer %p\n",
202 				rReadData.ulDataLength, ioarg, pusBuffer);
203 			mutex_lock(&mwave_mutex);
204 			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
205 					iocmd,
206 					pusBuffer,
207 					rReadData.ulDataLength,
208 					rReadData.usDspAddress);
209 			mutex_unlock(&mwave_mutex);
210 		}
211 			break;
212 
213 		case IOCTL_MW_READ_INST: {
214 			MW_READWRITE rReadData;
215 			unsigned short __user *pusBuffer = NULL;
216 
217 			if( copy_from_user(&rReadData, arg,
218 						sizeof(MW_READWRITE)) )
219 				return -EFAULT;
220 			pusBuffer = (unsigned short __user *) (rReadData.pBuf);
221 
222 			PRINTK_4(TRACE_MWAVE,
223 				"mwavedd::mwave_ioctl IOCTL_MW_READ_INST,"
224 				" size %lx, ioarg %lx pusBuffer %p\n",
225 				rReadData.ulDataLength / 2, ioarg,
226 				pusBuffer);
227 			mutex_lock(&mwave_mutex);
228 			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
229 				iocmd, pusBuffer,
230 				rReadData.ulDataLength / 2,
231 				rReadData.usDspAddress);
232 			mutex_unlock(&mwave_mutex);
233 		}
234 			break;
235 
236 		case IOCTL_MW_WRITE_DATA: {
237 			MW_READWRITE rWriteData;
238 			unsigned short __user *pusBuffer = NULL;
239 
240 			if( copy_from_user(&rWriteData, arg,
241 						sizeof(MW_READWRITE)) )
242 				return -EFAULT;
243 			pusBuffer = (unsigned short __user *) (rWriteData.pBuf);
244 
245 			PRINTK_4(TRACE_MWAVE,
246 				"mwavedd::mwave_ioctl IOCTL_MW_WRITE_DATA,"
247 				" size %lx, ioarg %lx pusBuffer %p\n",
248 				rWriteData.ulDataLength, ioarg,
249 				pusBuffer);
250 			mutex_lock(&mwave_mutex);
251 			retval = tp3780I_ReadWriteDspDStore(&pDrvData->rBDData,
252 					iocmd, pusBuffer,
253 					rWriteData.ulDataLength,
254 					rWriteData.usDspAddress);
255 			mutex_unlock(&mwave_mutex);
256 		}
257 			break;
258 
259 		case IOCTL_MW_WRITE_INST: {
260 			MW_READWRITE rWriteData;
261 			unsigned short __user *pusBuffer = NULL;
262 
263 			if( copy_from_user(&rWriteData, arg,
264 						sizeof(MW_READWRITE)) )
265 				return -EFAULT;
266 			pusBuffer = (unsigned short __user *)(rWriteData.pBuf);
267 
268 			PRINTK_4(TRACE_MWAVE,
269 				"mwavedd::mwave_ioctl IOCTL_MW_WRITE_INST,"
270 				" size %lx, ioarg %lx pusBuffer %p\n",
271 				rWriteData.ulDataLength, ioarg,
272 				pusBuffer);
273 			mutex_lock(&mwave_mutex);
274 			retval = tp3780I_ReadWriteDspIStore(&pDrvData->rBDData,
275 					iocmd, pusBuffer,
276 					rWriteData.ulDataLength,
277 					rWriteData.usDspAddress);
278 			mutex_unlock(&mwave_mutex);
279 		}
280 			break;
281 
282 		case IOCTL_MW_REGISTER_IPC: {
283 			unsigned int ipcnum = (unsigned int) ioarg;
284 
285 			if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
286 				PRINTK_ERROR(KERN_ERR_MWAVE
287 						"mwavedd::mwave_ioctl:"
288 						" IOCTL_MW_REGISTER_IPC:"
289 						" Error: Invalid ipcnum %x\n",
290 						ipcnum);
291 				return -EINVAL;
292 			}
293 			ipcnum = array_index_nospec(ipcnum,
294 						    ARRAY_SIZE(pDrvData->IPCs));
295 			PRINTK_3(TRACE_MWAVE,
296 				"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
297 				" ipcnum %x entry usIntCount %x\n",
298 				ipcnum,
299 				pDrvData->IPCs[ipcnum].usIntCount);
300 
301 			mutex_lock(&mwave_mutex);
302 			pDrvData->IPCs[ipcnum].bIsHere = false;
303 			pDrvData->IPCs[ipcnum].bIsEnabled = true;
304 			mutex_unlock(&mwave_mutex);
305 
306 			PRINTK_2(TRACE_MWAVE,
307 				"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
308 				" ipcnum %x exit\n",
309 				ipcnum);
310 		}
311 			break;
312 
313 		case IOCTL_MW_GET_IPC: {
314 			unsigned int ipcnum = (unsigned int) ioarg;
315 
316 			if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
317 				PRINTK_ERROR(KERN_ERR_MWAVE
318 						"mwavedd::mwave_ioctl:"
319 						" IOCTL_MW_GET_IPC: Error:"
320 						" Invalid ipcnum %x\n", ipcnum);
321 				return -EINVAL;
322 			}
323 			ipcnum = array_index_nospec(ipcnum,
324 						    ARRAY_SIZE(pDrvData->IPCs));
325 			PRINTK_3(TRACE_MWAVE,
326 				"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
327 				" ipcnum %x, usIntCount %x\n",
328 				ipcnum,
329 				pDrvData->IPCs[ipcnum].usIntCount);
330 
331 			mutex_lock(&mwave_mutex);
332 			if (pDrvData->IPCs[ipcnum].bIsEnabled == true) {
333 				DECLARE_WAITQUEUE(wait, current);
334 
335 				PRINTK_2(TRACE_MWAVE,
336 					"mwavedd::mwave_ioctl, thread for"
337 					" ipc %x going to sleep\n",
338 					ipcnum);
339 				add_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
340 				pDrvData->IPCs[ipcnum].bIsHere = true;
341 				set_current_state(TASK_INTERRUPTIBLE);
342 				/* check whether an event was signalled by */
343 				/* the interrupt handler while we were gone */
344 				if (pDrvData->IPCs[ipcnum].usIntCount == 1) {	/* first int has occurred (race condition) */
345 					pDrvData->IPCs[ipcnum].usIntCount = 2;	/* first int has been handled */
346 					PRINTK_2(TRACE_MWAVE,
347 						"mwavedd::mwave_ioctl"
348 						" IOCTL_MW_GET_IPC ipcnum %x"
349 						" handling first int\n",
350 						ipcnum);
351 				} else {	/* either 1st int has not yet occurred, or we have already handled the first int */
352 					schedule();
353 					if (pDrvData->IPCs[ipcnum].usIntCount == 1) {
354 						pDrvData->IPCs[ipcnum].usIntCount = 2;
355 					}
356 					PRINTK_2(TRACE_MWAVE,
357 						"mwavedd::mwave_ioctl"
358 						" IOCTL_MW_GET_IPC ipcnum %x"
359 						" woke up and returning to"
360 						" application\n",
361 						ipcnum);
362 				}
363 				pDrvData->IPCs[ipcnum].bIsHere = false;
364 				remove_wait_queue(&pDrvData->IPCs[ipcnum].ipc_wait_queue, &wait);
365 				set_current_state(TASK_RUNNING);
366 				PRINTK_2(TRACE_MWAVE,
367 					"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC,"
368 					" returning thread for ipc %x"
369 					" processing\n",
370 					ipcnum);
371 			}
372 			mutex_unlock(&mwave_mutex);
373 		}
374 			break;
375 
376 		case IOCTL_MW_UNREGISTER_IPC: {
377 			unsigned int ipcnum = (unsigned int) ioarg;
378 
379 			PRINTK_2(TRACE_MWAVE,
380 				"mwavedd::mwave_ioctl IOCTL_MW_UNREGISTER_IPC"
381 				" ipcnum %x\n",
382 				ipcnum);
383 			if (ipcnum >= ARRAY_SIZE(pDrvData->IPCs)) {
384 				PRINTK_ERROR(KERN_ERR_MWAVE
385 						"mwavedd::mwave_ioctl:"
386 						" IOCTL_MW_UNREGISTER_IPC:"
387 						" Error: Invalid ipcnum %x\n",
388 						ipcnum);
389 				return -EINVAL;
390 			}
391 			ipcnum = array_index_nospec(ipcnum,
392 						    ARRAY_SIZE(pDrvData->IPCs));
393 			mutex_lock(&mwave_mutex);
394 			if (pDrvData->IPCs[ipcnum].bIsEnabled == true) {
395 				pDrvData->IPCs[ipcnum].bIsEnabled = false;
396 				if (pDrvData->IPCs[ipcnum].bIsHere == true) {
397 					wake_up_interruptible(&pDrvData->IPCs[ipcnum].ipc_wait_queue);
398 				}
399 			}
400 			mutex_unlock(&mwave_mutex);
401 		}
402 			break;
403 
404 		default:
405 			return -ENOTTY;
406 			break;
407 	} /* switch */
408 
409 	PRINTK_2(TRACE_MWAVE, "mwavedd::mwave_ioctl, exit retval %x\n", retval);
410 
411 	return retval;
412 }
413 
414 
mwave_read(struct file * file,char __user * buf,size_t count,loff_t * ppos)415 static ssize_t mwave_read(struct file *file, char __user *buf, size_t count,
416                           loff_t * ppos)
417 {
418 	PRINTK_5(TRACE_MWAVE,
419 		"mwavedd::mwave_read entry file %p, buf %p, count %zx ppos %p\n",
420 		file, buf, count, ppos);
421 
422 	return -EINVAL;
423 }
424 
425 
mwave_write(struct file * file,const char __user * buf,size_t count,loff_t * ppos)426 static ssize_t mwave_write(struct file *file, const char __user *buf,
427                            size_t count, loff_t * ppos)
428 {
429 	PRINTK_5(TRACE_MWAVE,
430 		"mwavedd::mwave_write entry file %p, buf %p,"
431 		" count %zx ppos %p\n",
432 		file, buf, count, ppos);
433 
434 	return -EINVAL;
435 }
436 
437 
register_serial_portandirq(unsigned int port,int irq)438 static int register_serial_portandirq(unsigned int port, int irq)
439 {
440 	struct uart_8250_port uart;
441 
442 	switch ( port ) {
443 		case 0x3f8:
444 		case 0x2f8:
445 		case 0x3e8:
446 		case 0x2e8:
447 			/* OK */
448 			break;
449 		default:
450 			PRINTK_ERROR(KERN_ERR_MWAVE
451 					"mwavedd::register_serial_portandirq:"
452 					" Error: Illegal port %x\n", port );
453 			return -1;
454 	} /* switch */
455 	/* port is okay */
456 
457 	switch ( irq ) {
458 		case 3:
459 		case 4:
460 		case 5:
461 		case 7:
462 			/* OK */
463 			break;
464 		default:
465 			PRINTK_ERROR(KERN_ERR_MWAVE
466 					"mwavedd::register_serial_portandirq:"
467 					" Error: Illegal irq %x\n", irq );
468 			return -1;
469 	} /* switch */
470 	/* irq is okay */
471 
472 	memset(&uart, 0, sizeof(uart));
473 
474 	uart.port.uartclk =  1843200;
475 	uart.port.iobase = port;
476 	uart.port.irq = irq;
477 	uart.port.iotype = UPIO_PORT;
478 	uart.port.flags =  UPF_SHARE_IRQ;
479 	return serial8250_register_8250_port(&uart);
480 }
481 
482 
483 static const struct file_operations mwave_fops = {
484 	.owner		= THIS_MODULE,
485 	.read		= mwave_read,
486 	.write		= mwave_write,
487 	.unlocked_ioctl	= mwave_ioctl,
488 	.open		= mwave_open,
489 	.release	= mwave_close,
490 	.llseek		= default_llseek,
491 };
492 
493 
494 static struct miscdevice mwave_misc_dev = { MWAVE_MINOR, "mwave", &mwave_fops };
495 
496 #if 0 /* totally b0rked */
497 /*
498  * sysfs support <paulsch@us.ibm.com>
499  */
500 
501 struct device mwave_device;
502 
503 /* Prevent code redundancy, create a macro for mwave_show_* functions. */
504 #define mwave_show_function(attr_name, format_string, field)		\
505 static ssize_t mwave_show_##attr_name(struct device *dev, struct device_attribute *attr, char *buf)	\
506 {									\
507 	DSP_3780I_CONFIG_SETTINGS *pSettings =				\
508 		&mwave_s_mdd.rBDData.rDspSettings;			\
509         return sprintf(buf, format_string, pSettings->field);		\
510 }
511 
512 /* All of our attributes are read attributes. */
513 #define mwave_dev_rd_attr(attr_name, format_string, field)		\
514 	mwave_show_function(attr_name, format_string, field)		\
515 static DEVICE_ATTR(attr_name, S_IRUGO, mwave_show_##attr_name, NULL)
516 
517 mwave_dev_rd_attr (3780i_dma, "%i\n", usDspDma);
518 mwave_dev_rd_attr (3780i_irq, "%i\n", usDspIrq);
519 mwave_dev_rd_attr (3780i_io, "%#.4x\n", usDspBaseIO);
520 mwave_dev_rd_attr (uart_irq, "%i\n", usUartIrq);
521 mwave_dev_rd_attr (uart_io, "%#.4x\n", usUartBaseIO);
522 
523 static struct device_attribute * const mwave_dev_attrs[] = {
524 	&dev_attr_3780i_dma,
525 	&dev_attr_3780i_irq,
526 	&dev_attr_3780i_io,
527 	&dev_attr_uart_irq,
528 	&dev_attr_uart_io,
529 };
530 #endif
531 
532 /*
533 * mwave_init is called on module load
534 *
535 * mwave_exit is called on module unload
536 * mwave_exit is also used to clean up after an aborted mwave_init
537 */
mwave_exit(void)538 static void mwave_exit(void)
539 {
540 	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
541 
542 	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit entry\n");
543 
544 #if 0
545 	for (i = 0; i < pDrvData->nr_registered_attrs; i++)
546 		device_remove_file(&mwave_device, mwave_dev_attrs[i]);
547 	pDrvData->nr_registered_attrs = 0;
548 
549 	if (pDrvData->device_registered) {
550 		device_unregister(&mwave_device);
551 		pDrvData->device_registered = false;
552 	}
553 #endif
554 
555 	if ( pDrvData->sLine >= 0 ) {
556 		serial8250_unregister_port(pDrvData->sLine);
557 	}
558 	if (pDrvData->bMwaveDevRegistered) {
559 		misc_deregister(&mwave_misc_dev);
560 	}
561 	if (pDrvData->bDSPEnabled) {
562 		tp3780I_DisableDSP(&pDrvData->rBDData);
563 	}
564 	if (pDrvData->bResourcesClaimed) {
565 		tp3780I_ReleaseResources(&pDrvData->rBDData);
566 	}
567 	if (pDrvData->bBDInitialized) {
568 		tp3780I_Cleanup(&pDrvData->rBDData);
569 	}
570 
571 	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_exit exit\n");
572 }
573 
574 module_exit(mwave_exit);
575 
mwave_init(void)576 static int __init mwave_init(void)
577 {
578 	int i;
579 	int retval = 0;
580 	pMWAVE_DEVICE_DATA pDrvData = &mwave_s_mdd;
581 
582 	PRINTK_1(TRACE_MWAVE, "mwavedd::mwave_init entry\n");
583 
584 	memset(&mwave_s_mdd, 0, sizeof(MWAVE_DEVICE_DATA));
585 
586 	pDrvData->bBDInitialized = false;
587 	pDrvData->bResourcesClaimed = false;
588 	pDrvData->bDSPEnabled = false;
589 	pDrvData->bDSPReset = false;
590 	pDrvData->bMwaveDevRegistered = false;
591 	pDrvData->sLine = -1;
592 
593 	for (i = 0; i < ARRAY_SIZE(pDrvData->IPCs); i++) {
594 		pDrvData->IPCs[i].bIsEnabled = false;
595 		pDrvData->IPCs[i].bIsHere = false;
596 		pDrvData->IPCs[i].usIntCount = 0;	/* no ints received yet */
597 		init_waitqueue_head(&pDrvData->IPCs[i].ipc_wait_queue);
598 	}
599 
600 	retval = tp3780I_InitializeBoardData(&pDrvData->rBDData);
601 	PRINTK_2(TRACE_MWAVE,
602 		"mwavedd::mwave_init, return from tp3780I_InitializeBoardData"
603 		" retval %x\n",
604 		retval);
605 	if (retval) {
606 		PRINTK_ERROR(KERN_ERR_MWAVE
607 				"mwavedd::mwave_init: Error:"
608 				" Failed to initialize board data\n");
609 		goto cleanup_error;
610 	}
611 	pDrvData->bBDInitialized = true;
612 
613 	retval = tp3780I_CalcResources(&pDrvData->rBDData);
614 	PRINTK_2(TRACE_MWAVE,
615 		"mwavedd::mwave_init, return from tp3780I_CalcResources"
616 		" retval %x\n",
617 		retval);
618 	if (retval) {
619 		PRINTK_ERROR(KERN_ERR_MWAVE
620 				"mwavedd:mwave_init: Error:"
621 				" Failed to calculate resources\n");
622 		goto cleanup_error;
623 	}
624 
625 	retval = tp3780I_ClaimResources(&pDrvData->rBDData);
626 	PRINTK_2(TRACE_MWAVE,
627 		"mwavedd::mwave_init, return from tp3780I_ClaimResources"
628 		" retval %x\n",
629 		retval);
630 	if (retval) {
631 		PRINTK_ERROR(KERN_ERR_MWAVE
632 				"mwavedd:mwave_init: Error:"
633 				" Failed to claim resources\n");
634 		goto cleanup_error;
635 	}
636 	pDrvData->bResourcesClaimed = true;
637 
638 	retval = tp3780I_EnableDSP(&pDrvData->rBDData);
639 	PRINTK_2(TRACE_MWAVE,
640 		"mwavedd::mwave_init, return from tp3780I_EnableDSP"
641 		" retval %x\n",
642 		retval);
643 	if (retval) {
644 		PRINTK_ERROR(KERN_ERR_MWAVE
645 				"mwavedd:mwave_init: Error:"
646 				" Failed to enable DSP\n");
647 		goto cleanup_error;
648 	}
649 	pDrvData->bDSPEnabled = true;
650 
651 	if (misc_register(&mwave_misc_dev) < 0) {
652 		PRINTK_ERROR(KERN_ERR_MWAVE
653 				"mwavedd:mwave_init: Error:"
654 				" Failed to register misc device\n");
655 		goto cleanup_error;
656 	}
657 	pDrvData->bMwaveDevRegistered = true;
658 
659 	pDrvData->sLine = register_serial_portandirq(
660 		pDrvData->rBDData.rDspSettings.usUartBaseIO,
661 		pDrvData->rBDData.rDspSettings.usUartIrq
662 	);
663 	if (pDrvData->sLine < 0) {
664 		PRINTK_ERROR(KERN_ERR_MWAVE
665 				"mwavedd:mwave_init: Error:"
666 				" Failed to register serial driver\n");
667 		goto cleanup_error;
668 	}
669 	/* uart is registered */
670 
671 #if 0
672 	/* sysfs */
673 	memset(&mwave_device, 0, sizeof (struct device));
674 	dev_set_name(&mwave_device, "mwave");
675 
676 	if (device_register(&mwave_device))
677 		goto cleanup_error;
678 	pDrvData->device_registered = true;
679 	for (i = 0; i < ARRAY_SIZE(mwave_dev_attrs); i++) {
680 		if(device_create_file(&mwave_device, mwave_dev_attrs[i])) {
681 			PRINTK_ERROR(KERN_ERR_MWAVE
682 					"mwavedd:mwave_init: Error:"
683 					" Failed to create sysfs file %s\n",
684 					mwave_dev_attrs[i]->attr.name);
685 			goto cleanup_error;
686 		}
687 		pDrvData->nr_registered_attrs++;
688 	}
689 #endif
690 
691 	/* SUCCESS! */
692 	return 0;
693 
694 cleanup_error:
695 	PRINTK_ERROR(KERN_ERR_MWAVE
696 			"mwavedd::mwave_init: Error:"
697 			" Failed to initialize\n");
698 	mwave_exit(); /* clean up */
699 
700 	return -EIO;
701 }
702 
703 module_init(mwave_init);
704 
705