summaryrefslogtreecommitdiff
path: root/drivers/char/mwave/smapi.c
blob: 691f5898bb324610afd6eac05655ee2ed55f0c38 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
/*
*
* smapi.c -- SMAPI interface routines
*
*
* Written By: Mike Sullivan IBM Corporation
*
* Copyright (C) 1999 IBM Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* NO WARRANTY
* THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
* CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
* LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
* solely responsible for determining the appropriateness of using and
* distributing the Program and assumes all risks associated with its
* exercise of rights under this Agreement, including but not limited to
* the risks and costs of program errors, damage to or loss of data,
* programs or equipment, and unavailability or interruption of operations.
*
* DISCLAIMER OF LIABILITY
* NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
* USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
* HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*
*
* 10/23/2000 - Alpha Release
*	First release to the public
*/

#include <linux/kernel.h>
#include <linux/mc146818rtc.h>	/* CMOS defines */
#include "smapi.h"
#include "mwavedd.h"

static unsigned short g_usSmapiPort = 0;


static int smapi_request(unsigned short inBX, unsigned short inCX,
			 unsigned short inDI, unsigned short inSI,
			 unsigned short *outAX, unsigned short *outBX,
			 unsigned short *outCX, unsigned short *outDX,
			 unsigned short *outDI, unsigned short *outSI)
{
	unsigned short myoutAX = 2, *pmyoutAX = &myoutAX;
	unsigned short myoutBX = 3, *pmyoutBX = &myoutBX;
	unsigned short myoutCX = 4, *pmyoutCX = &myoutCX;
	unsigned short myoutDX = 5, *pmyoutDX = &myoutDX;
	unsigned short myoutDI = 6, *pmyoutDI = &myoutDI;
	unsigned short myoutSI = 7, *pmyoutSI = &myoutSI;
	unsigned short usSmapiOK = -EIO, *pusSmapiOK = &usSmapiOK;
	unsigned int inBXCX = (inBX << 16) | inCX;
	unsigned int inDISI = (inDI << 16) | inSI;
	int retval = 0;

	PRINTK_5(TRACE_SMAPI, "inBX %x inCX %x inDI %x inSI %x\n",
		inBX, inCX, inDI, inSI);

	__asm__ __volatile__("movw  $0x5380,%%ax\n\t"
			    "movl  %7,%%ebx\n\t"
			    "shrl  $16, %%ebx\n\t"
			    "movw  %7,%%cx\n\t"
			    "movl  %8,%%edi\n\t"
			    "shrl  $16,%%edi\n\t"
			    "movw  %8,%%si\n\t"
			    "movw  %9,%%dx\n\t"
			    "out   %%al,%%dx\n\t"
			    "out   %%al,$0x4F\n\t"
			    "cmpb  $0x53,%%ah\n\t"
			    "je    2f\n\t"
			    "1:\n\t"
			    "orb   %%ah,%%ah\n\t"
			    "jnz   2f\n\t"
			    "movw  %%ax,%0\n\t"
			    "movw  %%bx,%1\n\t"
			    "movw  %%cx,%2\n\t"
			    "movw  %%dx,%3\n\t"
			    "movw  %%di,%4\n\t"
			    "movw  %%si,%5\n\t"
			    "movw  $1,%6\n\t"
			    "2:\n\t":"=m"(*(unsigned short *) pmyoutAX),
			    "=m"(*(unsigned short *) pmyoutBX),
			    "=m"(*(unsigned short *) pmyoutCX),
			    "=m"(*(unsigned short *) pmyoutDX),
			    "=m"(*(unsigned short *) pmyoutDI),
			    "=m"(*(unsigned short *) pmyoutSI),
			    "=m"(*(unsigned short *) pusSmapiOK)
			    :"m"(inBXCX), "m"(inDISI), "m"(g_usSmapiPort)
			    :"%eax", "%ebx", "%ecx", "%edx", "%edi",
			    "%esi");

	PRINTK_8(TRACE_SMAPI,
		"myoutAX %x myoutBX %x myoutCX %x myoutDX %x myoutDI %x myoutSI %x usSmapiOK %x\n",
		myoutAX, myoutBX, myoutCX, myoutDX, myoutDI, myoutSI,
		usSmapiOK);
	*outAX = myoutAX;
	*outBX = myoutBX;
	*outCX = myoutCX;
	*outDX = myoutDX;
	*outDI = myoutDI;
	*outSI = myoutSI;

	retval = (usSmapiOK == 1) ? 0 : -EIO;
	PRINTK_2(TRACE_SMAPI, "smapi::smapi_request exit retval %x\n", retval);
	return retval;
}


int smapi_query_DSP_cfg(SMAPI_DSP_SETTINGS * pSettings)
{
	int bRC = -EIO;
	unsigned short usAX, usBX, usCX, usDX, usDI, usSI;
	static const unsigned short ausDspBases[] = {
		0x0030, 0x4E30, 0x8E30, 0xCE30,
		0x0130, 0x0350, 0x0070, 0x0DB0 };
	static const unsigned short ausUartBases[] = {
		0x03F8, 0x02F8, 0x03E8, 0x02E8 };

	PRINTK_1(TRACE_SMAPI, "smapi::smapi_query_DSP_cfg entry\n");

	bRC = smapi_request(0x1802, 0x0000, 0, 0,
		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
	if (bRC) {
		PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Error: Could not get DSP Settings. Aborting.\n");
		return bRC;
	}

	PRINTK_1(TRACE_SMAPI, "smapi::smapi_query_DSP_cfg, smapi_request OK\n");

	pSettings->bDSPPresent = ((usBX & 0x0100) != 0);
	pSettings->bDSPEnabled = ((usCX & 0x0001) != 0);
	pSettings->usDspIRQ = usSI & 0x00FF;
	pSettings->usDspDMA = (usSI & 0xFF00) >> 8;
	if ((usDI & 0x00FF) < ARRAY_SIZE(ausDspBases)) {
		pSettings->usDspBaseIO = ausDspBases[usDI & 0x00FF];
	} else {
		pSettings->usDspBaseIO = 0;
	}
	PRINTK_6(TRACE_SMAPI,
		"smapi::smapi_query_DSP_cfg get DSP Settings bDSPPresent %x bDSPEnabled %x usDspIRQ %x usDspDMA %x usDspBaseIO %x\n",
		pSettings->bDSPPresent, pSettings->bDSPEnabled,
		pSettings->usDspIRQ, pSettings->usDspDMA,
		pSettings->usDspBaseIO);

	/* check for illegal values */
	if ( pSettings->usDspBaseIO == 0 ) 
		PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Worry: DSP base I/O address is 0\n");
	if ( pSettings->usDspIRQ == 0 )
		PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Worry: DSP IRQ line is 0\n");

	bRC = smapi_request(0x1804, 0x0000, 0, 0,
	   	&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
	if (bRC) {
		PRINTK_ERROR("smapi::smapi_query_DSP_cfg: Error: Could not get DSP modem settings. Aborting.\n");
		return bRC;
	} 

	PRINTK_1(TRACE_SMAPI, "smapi::smapi_query_DSP_cfg, smapi_request OK\n");

	pSettings->bModemEnabled = ((usCX & 0x0001) != 0);
	pSettings->usUartIRQ = usSI & 0x000F;
	if (((usSI & 0xFF00) >> 8) < ARRAY_SIZE(ausUartBases)) {
		pSettings->usUartBaseIO = ausUartBases[(usSI & 0xFF00) >> 8];
	} else {
		pSettings->usUartBaseIO = 0;
	}

	PRINTK_4(TRACE_SMAPI,
		"smapi::smapi_query_DSP_cfg get DSP modem settings bModemEnabled %x usUartIRQ %x usUartBaseIO %x\n",
		pSettings->bModemEnabled,
		pSettings->usUartIRQ,
		pSettings->usUartBaseIO);

	/* check for illegal values */
	if ( pSettings->usUartBaseIO == 0 ) 
		PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Worry: UART base I/O address is 0\n");
	if ( pSettings->usUartIRQ == 0 )
		PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Worry: UART IRQ line is 0\n");

	PRINTK_2(TRACE_SMAPI, "smapi::smapi_query_DSP_cfg exit bRC %x\n", bRC);

	return bRC;
}


int smapi_set_DSP_cfg(void)
{
	int bRC = -EIO;
	int i;
	unsigned short usAX, usBX, usCX, usDX, usDI, usSI;
	static const unsigned short ausDspBases[] = {
		0x0030, 0x4E30, 0x8E30, 0xCE30,
		0x0130, 0x0350, 0x0070, 0x0DB0 };
	static const unsigned short ausUartBases[] = {
		0x03F8, 0x02F8, 0x03E8, 0x02E8 };
	static const unsigned short ausDspIrqs[] = {
		5, 7, 10, 11, 15 };
	static const unsigned short ausUartIrqs[] = {
		3, 4 };

	unsigned short dspio_index = 0, uartio_index = 0;

	PRINTK_5(TRACE_SMAPI,
		"smapi::smapi_set_DSP_cfg entry mwave_3780i_irq %x mwave_3780i_io %x mwave_uart_irq %x mwave_uart_io %x\n",
		mwave_3780i_irq, mwave_3780i_io, mwave_uart_irq, mwave_uart_io);

	if (mwave_3780i_io) {
		for (i = 0; i < ARRAY_SIZE(ausDspBases); i++) {
			if (mwave_3780i_io == ausDspBases[i])
				break;
		}
		if (i == ARRAY_SIZE(ausDspBases)) {
			PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_set_DSP_cfg: Error: Invalid mwave_3780i_io address %x. Aborting.\n", mwave_3780i_io);
			return bRC;
		}
		dspio_index = i;
	}

	if (mwave_3780i_irq) {
		for (i = 0; i < ARRAY_SIZE(ausDspIrqs); i++) {
			if (mwave_3780i_irq == ausDspIrqs[i])
				break;
		}
		if (i == ARRAY_SIZE(ausDspIrqs)) {
			PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_set_DSP_cfg: Error: Invalid mwave_3780i_irq %x. Aborting.\n", mwave_3780i_irq);
			return bRC;
		}
	}

	if (mwave_uart_io) {
		for (i = 0; i < ARRAY_SIZE(ausUartBases); i++) {
			if (mwave_uart_io == ausUartBases[i])
				break;
		}
		if (i == ARRAY_SIZE(ausUartBases)) {
			PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_set_DSP_cfg: Error: Invalid mwave_uart_io address %x. Aborting.\n", mwave_uart_io);
			return bRC;
		}
		uartio_index = i;
	}


	if (mwave_uart_irq) {
		for (i = 0; i < ARRAY_SIZE(ausUartIrqs); i++) {
			if (mwave_uart_irq == ausUartIrqs[i])
				break;
		}
		if (i == ARRAY_SIZE(ausUartIrqs)) {
			PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_set_DSP_cfg: Error: Invalid mwave_uart_irq %x. Aborting.\n", mwave_uart_irq);
			return bRC;
		}
	}

	if (mwave_uart_irq || mwave_uart_io) {

		/* Check serial port A */
		bRC = smapi_request(0x1402, 0x0000, 0, 0,
			&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
		if (bRC) goto exit_smapi_request_error;
		/* bRC == 0 */
		if (usBX & 0x0100) {	/* serial port A is present */
			if (usCX & 1) {	/* serial port is enabled */
				if ((usSI & 0xFF) == mwave_uart_irq) {
#ifndef MWAVE_FUTZ_WITH_OTHER_DEVICES
					PRINTK_ERROR(KERN_ERR_MWAVE
						"smapi::smapi_set_DSP_cfg: Serial port A irq %x conflicts with mwave_uart_irq %x\n", usSI & 0xFF, mwave_uart_irq);
#else
					PRINTK_3(TRACE_SMAPI,
						"smapi::smapi_set_DSP_cfg: Serial port A irq %x conflicts with mwave_uart_irq %x\n", usSI & 0xFF, mwave_uart_irq);
#endif
#ifdef MWAVE_FUTZ_WITH_OTHER_DEVICES
					PRINTK_1(TRACE_SMAPI,
						"smapi::smapi_set_DSP_cfg Disabling conflicting serial port\n");
					bRC = smapi_request(0x1403, 0x0100, 0, usSI,
						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
					if (bRC) goto exit_smapi_request_error;
					bRC = smapi_request(0x1402, 0x0000, 0, 0,
						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
					if (bRC) goto exit_smapi_request_error;
#else
					goto exit_conflict;
#endif
				} else {
					if ((usSI >> 8) == uartio_index) {
#ifndef MWAVE_FUTZ_WITH_OTHER_DEVICES
						PRINTK_ERROR(KERN_ERR_MWAVE
							"smapi::smapi_set_DSP_cfg: Serial port A base I/O address %x conflicts with mwave uart I/O %x\n", ausUartBases[usSI >> 8], ausUartBases[uartio_index]);
#else
						PRINTK_3(TRACE_SMAPI,
							"smapi::smapi_set_DSP_cfg: Serial port A base I/O address %x conflicts with mwave uart I/O %x\n", ausUartBases[usSI >> 8], ausUartBases[uartio_index]);
#endif
#ifdef MWAVE_FUTZ_WITH_OTHER_DEVICES
						PRINTK_1(TRACE_SMAPI,
							"smapi::smapi_set_DSP_cfg Disabling conflicting serial port A\n");
						bRC = smapi_request (0x1403, 0x0100, 0, usSI,
							&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
						if (bRC) goto exit_smapi_request_error;
						bRC = smapi_request (0x1402, 0x0000, 0, 0,
							&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
						if (bRC) goto exit_smapi_request_error;
#else
						goto exit_conflict;
#endif
					}
				}
			}
		}

		/* Check serial port B */
		bRC = smapi_request(0x1404, 0x0000, 0, 0,
			&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
		if (bRC) goto exit_smapi_request_error;
		/* bRC == 0 */
		if (usBX & 0x0100) {	/* serial port B is present */
			if (usCX & 1) {	/* serial port is enabled */
				if ((usSI & 0xFF) == mwave_uart_irq) {
#ifndef MWAVE_FUTZ_WITH_OTHER_DEVICES
					PRINTK_ERROR(KERN_ERR_MWAVE
						"smapi::smapi_set_DSP_cfg: Serial port B irq %x conflicts with mwave_uart_irq %x\n", usSI & 0xFF, mwave_uart_irq);
#else
					PRINTK_3(TRACE_SMAPI,
						"smapi::smapi_set_DSP_cfg: Serial port B irq %x conflicts with mwave_uart_irq %x\n", usSI & 0xFF, mwave_uart_irq);
#endif
#ifdef MWAVE_FUTZ_WITH_OTHER_DEVICES
					PRINTK_1(TRACE_SMAPI,
						"smapi::smapi_set_DSP_cfg Disabling conflicting serial port B\n");
					bRC = smapi_request(0x1405, 0x0100, 0, usSI,
						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
					if (bRC) goto exit_smapi_request_error;
					bRC = smapi_request(0x1404, 0x0000, 0, 0,
						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
					if (bRC) goto exit_smapi_request_error;
#else
					goto exit_conflict;
#endif
				} else {
					if ((usSI >> 8) == uartio_index) {
#ifndef MWAVE_FUTZ_WITH_OTHER_DEVICES
						PRINTK_ERROR(KERN_ERR_MWAVE
							"smapi::smapi_set_DSP_cfg: Serial port B base I/O address %x conflicts with mwave uart I/O %x\n", ausUartBases[usSI >> 8], ausUartBases[uartio_index]);
#else
						PRINTK_3(TRACE_SMAPI,
							"smapi::smapi_set_DSP_cfg: Serial port B base I/O address %x conflicts with mwave uart I/O %x\n", ausUartBases[usSI >> 8], ausUartBases[uartio_index]);
#endif
#ifdef MWAVE_FUTZ_WITH_OTHER_DEVICES
						PRINTK_1 (TRACE_SMAPI,
						    "smapi::smapi_set_DSP_cfg Disabling conflicting serial port B\n");
						bRC = smapi_request (0x1405, 0x0100, 0, usSI,
							&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
						if (bRC) goto exit_smapi_request_error;
						bRC = smapi_request (0x1404, 0x0000, 0, 0,
							&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
						if (bRC) goto exit_smapi_request_error;
#else
						goto exit_conflict;
#endif
					}
				}
			}
		}

		/* Check IR port */
		bRC = smapi_request(0x1700, 0x0000, 0, 0,
			&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
		if (bRC) goto exit_smapi_request_error;
		bRC = smapi_request(0x1704, 0x0000, 0, 0,
			&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
		if (bRC) goto exit_smapi_request_error;
		/* bRC == 0 */
		if ((usCX & 0xff) != 0xff) { /* IR port not disabled */
			if ((usCX & 0xff) == mwave_uart_irq) {
#ifndef MWAVE_FUTZ_WITH_OTHER_DEVICES
				PRINTK_ERROR(KERN_ERR_MWAVE
					"smapi::smapi_set_DSP_cfg: IR port irq %x conflicts with mwave_uart_irq %x\n", usCX & 0xff, mwave_uart_irq);
#else
				PRINTK_3(TRACE_SMAPI,
					"smapi::smapi_set_DSP_cfg: IR port irq %x conflicts with mwave_uart_irq %x\n", usCX & 0xff, mwave_uart_irq);
#endif
#ifdef MWAVE_FUTZ_WITH_OTHER_DEVICES
				PRINTK_1(TRACE_SMAPI,
					"smapi::smapi_set_DSP_cfg Disabling conflicting IR port\n");
				bRC = smapi_request(0x1701, 0x0100, 0, 0,
					&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
				if (bRC) goto exit_smapi_request_error;
				bRC = smapi_request(0x1700, 0, 0, 0,
					&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
				if (bRC) goto exit_smapi_request_error;
				bRC = smapi_request(0x1705, 0x01ff, 0, usSI,
					&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
				if (bRC) goto exit_smapi_request_error;
				bRC = smapi_request(0x1704, 0x0000, 0, 0,
					&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
				if (bRC) goto exit_smapi_request_error;
#else
				goto exit_conflict;
#endif
			} else {
				if ((usSI & 0xff) == uartio_index) {
#ifndef MWAVE_FUTZ_WITH_OTHER_DEVICES
					PRINTK_ERROR(KERN_ERR_MWAVE
						"smapi::smapi_set_DSP_cfg: IR port base I/O address %x conflicts with mwave uart I/O %x\n", ausUartBases[usSI & 0xff], ausUartBases[uartio_index]);
#else
					PRINTK_3(TRACE_SMAPI,
						"smapi::smapi_set_DSP_cfg: IR port base I/O address %x conflicts with mwave uart I/O %x\n", ausUartBases[usSI & 0xff], ausUartBases[uartio_index]);
#endif
#ifdef MWAVE_FUTZ_WITH_OTHER_DEVICES
					PRINTK_1(TRACE_SMAPI,
						"smapi::smapi_set_DSP_cfg Disabling conflicting IR port\n");
					bRC = smapi_request(0x1701, 0x0100, 0, 0,
						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
					if (bRC) goto exit_smapi_request_error;
					bRC = smapi_request(0x1700, 0, 0, 0,
						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
					if (bRC) goto exit_smapi_request_error;
					bRC = smapi_request(0x1705, 0x01ff, 0, usSI,
						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
					if (bRC) goto exit_smapi_request_error;
					bRC = smapi_request(0x1704, 0x0000, 0, 0,
						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
					if (bRC) goto exit_smapi_request_error;
#else
					goto exit_conflict;
#endif
				}
			}
		}
	}

	bRC = smapi_request(0x1802, 0x0000, 0, 0,
		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
	if (bRC) goto exit_smapi_request_error;

	if (mwave_3780i_io) {
		usDI = dspio_index;
	}
	if (mwave_3780i_irq) {
		usSI = (usSI & 0xff00) | mwave_3780i_irq;
	}

	bRC = smapi_request(0x1803, 0x0101, usDI, usSI,
		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
	if (bRC) goto exit_smapi_request_error;

	bRC = smapi_request(0x1804, 0x0000, 0, 0,
		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
	if (bRC) goto exit_smapi_request_error;

	if (mwave_uart_io) {
		usSI = (usSI & 0x00ff) | (uartio_index << 8);
	}
	if (mwave_uart_irq) {
		usSI = (usSI & 0xff00) | mwave_uart_irq;
	}
	bRC = smapi_request(0x1805, 0x0101, 0, usSI,
		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
	if (bRC) goto exit_smapi_request_error;

	bRC = smapi_request(0x1802, 0x0000, 0, 0,
		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
	if (bRC) goto exit_smapi_request_error;

	bRC = smapi_request(0x1804, 0x0000, 0, 0,
		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
	if (bRC) goto exit_smapi_request_error;

/* normal exit: */
	PRINTK_1(TRACE_SMAPI, "smapi::smapi_set_DSP_cfg exit\n");
	return 0;

exit_conflict:
	/* Message has already been printed */
	return -EIO;

exit_smapi_request_error:
	PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_set_DSP_cfg exit on smapi_request error bRC %x\n", bRC);
	return bRC;
}


int smapi_set_DSP_power_state(bool bOn)
{
	int bRC = -EIO;
	unsigned short usAX, usBX, usCX, usDX, usDI, usSI;
	unsigned short usPowerFunction;

	PRINTK_2(TRACE_SMAPI, "smapi::smapi_set_DSP_power_state entry bOn %x\n", bOn);

	usPowerFunction = (bOn) ? 1 : 0;

	bRC = smapi_request(0x4901, 0x0000, 0, usPowerFunction,
		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);

	PRINTK_2(TRACE_SMAPI, "smapi::smapi_set_DSP_power_state exit bRC %x\n", bRC);

	return bRC;
}

#if 0
static int SmapiQuerySystemID(void)
{
	int bRC = -EIO;
	unsigned short usAX = 0xffff, usBX = 0xffff, usCX = 0xffff,
		usDX = 0xffff, usDI = 0xffff, usSI = 0xffff;

	printk("smapi::SmapiQUerySystemID entry\n");
	bRC = smapi_request(0x0000, 0, 0, 0,
		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);

	if (bRC == 0) {
		printk("AX=%x, BX=%x, CX=%x, DX=%x, DI=%x, SI=%x\n",
			usAX, usBX, usCX, usDX, usDI, usSI);
	} else {
		printk("smapi::SmapiQuerySystemID smapi_request error\n");
	}

	return bRC;
}
#endif  /*  0  */

int smapi_init(void)
{
	int retval = -EIO;
	unsigned short usSmapiID = 0;
	unsigned long flags;

	PRINTK_1(TRACE_SMAPI, "smapi::smapi_init entry\n");

	spin_lock_irqsave(&rtc_lock, flags);
	usSmapiID = CMOS_READ(0x7C);
	usSmapiID |= (CMOS_READ(0x7D) << 8);
	spin_unlock_irqrestore(&rtc_lock, flags);
	PRINTK_2(TRACE_SMAPI, "smapi::smapi_init usSmapiID %x\n", usSmapiID);

	if (usSmapiID == 0x5349) {
		spin_lock_irqsave(&rtc_lock, flags);
		g_usSmapiPort = CMOS_READ(0x7E);
		g_usSmapiPort |= (CMOS_READ(0x7F) << 8);
		spin_unlock_irqrestore(&rtc_lock, flags);
		if (g_usSmapiPort == 0) {
			PRINTK_ERROR("smapi::smapi_init, ERROR unable to read from SMAPI port\n");
		} else {
			PRINTK_2(TRACE_SMAPI,
				"smapi::smapi_init, exit true g_usSmapiPort %x\n",
				g_usSmapiPort);
			retval = 0;
			//SmapiQuerySystemID();
		}
	} else {
		PRINTK_ERROR("smapi::smapi_init, ERROR invalid usSmapiID\n");
		retval = -ENXIO;
	}

	return retval;
}