xref: /openbmc/linux/drivers/char/mwave/smapi.c (revision 7ca78630)
1 /*
2 *
3 * smapi.c -- SMAPI interface routines
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/kernel.h>
50 #include <linux/mc146818rtc.h>	/* CMOS defines */
51 #include "smapi.h"
52 #include "mwavedd.h"
53 
54 static unsigned short g_usSmapiPort = 0;
55 
56 
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)57 static int smapi_request(unsigned short inBX, unsigned short inCX,
58 			 unsigned short inDI, unsigned short inSI,
59 			 unsigned short *outAX, unsigned short *outBX,
60 			 unsigned short *outCX, unsigned short *outDX,
61 			 unsigned short *outDI, unsigned short *outSI)
62 {
63 	unsigned short myoutAX = 2, *pmyoutAX = &myoutAX;
64 	unsigned short myoutBX = 3, *pmyoutBX = &myoutBX;
65 	unsigned short myoutCX = 4, *pmyoutCX = &myoutCX;
66 	unsigned short myoutDX = 5, *pmyoutDX = &myoutDX;
67 	unsigned short myoutDI = 6, *pmyoutDI = &myoutDI;
68 	unsigned short myoutSI = 7, *pmyoutSI = &myoutSI;
69 	unsigned short usSmapiOK = -EIO, *pusSmapiOK = &usSmapiOK;
70 	unsigned int inBXCX = (inBX << 16) | inCX;
71 	unsigned int inDISI = (inDI << 16) | inSI;
72 	int retval = 0;
73 
74 	PRINTK_5(TRACE_SMAPI, "inBX %x inCX %x inDI %x inSI %x\n",
75 		inBX, inCX, inDI, inSI);
76 
77 	__asm__ __volatile__("movw  $0x5380,%%ax\n\t"
78 			    "movl  %7,%%ebx\n\t"
79 			    "shrl  $16, %%ebx\n\t"
80 			    "movw  %7,%%cx\n\t"
81 			    "movl  %8,%%edi\n\t"
82 			    "shrl  $16,%%edi\n\t"
83 			    "movw  %8,%%si\n\t"
84 			    "movw  %9,%%dx\n\t"
85 			    "out   %%al,%%dx\n\t"
86 			    "out   %%al,$0x4F\n\t"
87 			    "cmpb  $0x53,%%ah\n\t"
88 			    "je    2f\n\t"
89 			    "1:\n\t"
90 			    "orb   %%ah,%%ah\n\t"
91 			    "jnz   2f\n\t"
92 			    "movw  %%ax,%0\n\t"
93 			    "movw  %%bx,%1\n\t"
94 			    "movw  %%cx,%2\n\t"
95 			    "movw  %%dx,%3\n\t"
96 			    "movw  %%di,%4\n\t"
97 			    "movw  %%si,%5\n\t"
98 			    "movw  $1,%6\n\t"
99 			    "2:\n\t":"=m"(*(unsigned short *) pmyoutAX),
100 			    "=m"(*(unsigned short *) pmyoutBX),
101 			    "=m"(*(unsigned short *) pmyoutCX),
102 			    "=m"(*(unsigned short *) pmyoutDX),
103 			    "=m"(*(unsigned short *) pmyoutDI),
104 			    "=m"(*(unsigned short *) pmyoutSI),
105 			    "=m"(*(unsigned short *) pusSmapiOK)
106 			    :"m"(inBXCX), "m"(inDISI), "m"(g_usSmapiPort)
107 			    :"%eax", "%ebx", "%ecx", "%edx", "%edi",
108 			    "%esi");
109 
110 	PRINTK_8(TRACE_SMAPI,
111 		"myoutAX %x myoutBX %x myoutCX %x myoutDX %x myoutDI %x myoutSI %x usSmapiOK %x\n",
112 		myoutAX, myoutBX, myoutCX, myoutDX, myoutDI, myoutSI,
113 		usSmapiOK);
114 	*outAX = myoutAX;
115 	*outBX = myoutBX;
116 	*outCX = myoutCX;
117 	*outDX = myoutDX;
118 	*outDI = myoutDI;
119 	*outSI = myoutSI;
120 
121 	retval = (usSmapiOK == 1) ? 0 : -EIO;
122 	PRINTK_2(TRACE_SMAPI, "smapi::smapi_request exit retval %x\n", retval);
123 	return retval;
124 }
125 
126 
smapi_query_DSP_cfg(SMAPI_DSP_SETTINGS * pSettings)127 int smapi_query_DSP_cfg(SMAPI_DSP_SETTINGS * pSettings)
128 {
129 	int bRC;
130 	unsigned short usAX, usBX, usCX, usDX, usDI, usSI;
131 	static const unsigned short ausDspBases[] = {
132 		0x0030, 0x4E30, 0x8E30, 0xCE30,
133 		0x0130, 0x0350, 0x0070, 0x0DB0 };
134 	static const unsigned short ausUartBases[] = {
135 		0x03F8, 0x02F8, 0x03E8, 0x02E8 };
136 
137 	PRINTK_1(TRACE_SMAPI, "smapi::smapi_query_DSP_cfg entry\n");
138 
139 	bRC = smapi_request(0x1802, 0x0000, 0, 0,
140 		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
141 	if (bRC) {
142 		PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Error: Could not get DSP Settings. Aborting.\n");
143 		return bRC;
144 	}
145 
146 	PRINTK_1(TRACE_SMAPI, "smapi::smapi_query_DSP_cfg, smapi_request OK\n");
147 
148 	pSettings->bDSPPresent = ((usBX & 0x0100) != 0);
149 	pSettings->bDSPEnabled = ((usCX & 0x0001) != 0);
150 	pSettings->usDspIRQ = usSI & 0x00FF;
151 	pSettings->usDspDMA = (usSI & 0xFF00) >> 8;
152 	if ((usDI & 0x00FF) < ARRAY_SIZE(ausDspBases)) {
153 		pSettings->usDspBaseIO = ausDspBases[usDI & 0x00FF];
154 	} else {
155 		pSettings->usDspBaseIO = 0;
156 	}
157 	PRINTK_6(TRACE_SMAPI,
158 		"smapi::smapi_query_DSP_cfg get DSP Settings bDSPPresent %x bDSPEnabled %x usDspIRQ %x usDspDMA %x usDspBaseIO %x\n",
159 		pSettings->bDSPPresent, pSettings->bDSPEnabled,
160 		pSettings->usDspIRQ, pSettings->usDspDMA,
161 		pSettings->usDspBaseIO);
162 
163 	/* check for illegal values */
164 	if ( pSettings->usDspBaseIO == 0 )
165 		PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Worry: DSP base I/O address is 0\n");
166 	if ( pSettings->usDspIRQ == 0 )
167 		PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Worry: DSP IRQ line is 0\n");
168 
169 	bRC = smapi_request(0x1804, 0x0000, 0, 0,
170 	   	&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
171 	if (bRC) {
172 		PRINTK_ERROR("smapi::smapi_query_DSP_cfg: Error: Could not get DSP modem settings. Aborting.\n");
173 		return bRC;
174 	}
175 
176 	PRINTK_1(TRACE_SMAPI, "smapi::smapi_query_DSP_cfg, smapi_request OK\n");
177 
178 	pSettings->bModemEnabled = ((usCX & 0x0001) != 0);
179 	pSettings->usUartIRQ = usSI & 0x000F;
180 	if (((usSI & 0xFF00) >> 8) < ARRAY_SIZE(ausUartBases)) {
181 		pSettings->usUartBaseIO = ausUartBases[(usSI & 0xFF00) >> 8];
182 	} else {
183 		pSettings->usUartBaseIO = 0;
184 	}
185 
186 	PRINTK_4(TRACE_SMAPI,
187 		"smapi::smapi_query_DSP_cfg get DSP modem settings bModemEnabled %x usUartIRQ %x usUartBaseIO %x\n",
188 		pSettings->bModemEnabled,
189 		pSettings->usUartIRQ,
190 		pSettings->usUartBaseIO);
191 
192 	/* check for illegal values */
193 	if ( pSettings->usUartBaseIO == 0 )
194 		PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Worry: UART base I/O address is 0\n");
195 	if ( pSettings->usUartIRQ == 0 )
196 		PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_query_DSP_cfg: Worry: UART IRQ line is 0\n");
197 
198 	PRINTK_2(TRACE_SMAPI, "smapi::smapi_query_DSP_cfg exit bRC %x\n", bRC);
199 
200 	return bRC;
201 }
202 
203 
smapi_set_DSP_cfg(void)204 int smapi_set_DSP_cfg(void)
205 {
206 	int bRC = -EIO;
207 	int i;
208 	unsigned short usAX, usBX, usCX, usDX, usDI, usSI;
209 	static const unsigned short ausDspBases[] = {
210 		0x0030, 0x4E30, 0x8E30, 0xCE30,
211 		0x0130, 0x0350, 0x0070, 0x0DB0 };
212 	static const unsigned short ausUartBases[] = {
213 		0x03F8, 0x02F8, 0x03E8, 0x02E8 };
214 	static const unsigned short ausDspIrqs[] = {
215 		5, 7, 10, 11, 15 };
216 	static const unsigned short ausUartIrqs[] = {
217 		3, 4 };
218 
219 	unsigned short dspio_index = 0, uartio_index = 0;
220 
221 	PRINTK_5(TRACE_SMAPI,
222 		"smapi::smapi_set_DSP_cfg entry mwave_3780i_irq %x mwave_3780i_io %x mwave_uart_irq %x mwave_uart_io %x\n",
223 		mwave_3780i_irq, mwave_3780i_io, mwave_uart_irq, mwave_uart_io);
224 
225 	if (mwave_3780i_io) {
226 		for (i = 0; i < ARRAY_SIZE(ausDspBases); i++) {
227 			if (mwave_3780i_io == ausDspBases[i])
228 				break;
229 		}
230 		if (i == ARRAY_SIZE(ausDspBases)) {
231 			PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_set_DSP_cfg: Error: Invalid mwave_3780i_io address %x. Aborting.\n", mwave_3780i_io);
232 			return bRC;
233 		}
234 		dspio_index = i;
235 	}
236 
237 	if (mwave_3780i_irq) {
238 		for (i = 0; i < ARRAY_SIZE(ausDspIrqs); i++) {
239 			if (mwave_3780i_irq == ausDspIrqs[i])
240 				break;
241 		}
242 		if (i == ARRAY_SIZE(ausDspIrqs)) {
243 			PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_set_DSP_cfg: Error: Invalid mwave_3780i_irq %x. Aborting.\n", mwave_3780i_irq);
244 			return bRC;
245 		}
246 	}
247 
248 	if (mwave_uart_io) {
249 		for (i = 0; i < ARRAY_SIZE(ausUartBases); i++) {
250 			if (mwave_uart_io == ausUartBases[i])
251 				break;
252 		}
253 		if (i == ARRAY_SIZE(ausUartBases)) {
254 			PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_set_DSP_cfg: Error: Invalid mwave_uart_io address %x. Aborting.\n", mwave_uart_io);
255 			return bRC;
256 		}
257 		uartio_index = i;
258 	}
259 
260 
261 	if (mwave_uart_irq) {
262 		for (i = 0; i < ARRAY_SIZE(ausUartIrqs); i++) {
263 			if (mwave_uart_irq == ausUartIrqs[i])
264 				break;
265 		}
266 		if (i == ARRAY_SIZE(ausUartIrqs)) {
267 			PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_set_DSP_cfg: Error: Invalid mwave_uart_irq %x. Aborting.\n", mwave_uart_irq);
268 			return bRC;
269 		}
270 	}
271 
272 	if (mwave_uart_irq || mwave_uart_io) {
273 
274 		/* Check serial port A */
275 		bRC = smapi_request(0x1402, 0x0000, 0, 0,
276 			&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
277 		if (bRC) goto exit_smapi_request_error;
278 		/* bRC == 0 */
279 		if (usBX & 0x0100) {	/* serial port A is present */
280 			if (usCX & 1) {	/* serial port is enabled */
281 				if ((usSI & 0xFF) == mwave_uart_irq) {
282 #ifndef MWAVE_FUTZ_WITH_OTHER_DEVICES
283 					PRINTK_ERROR(KERN_ERR_MWAVE
284 						"smapi::smapi_set_DSP_cfg: Serial port A irq %x conflicts with mwave_uart_irq %x\n", usSI & 0xFF, mwave_uart_irq);
285 #else
286 					PRINTK_3(TRACE_SMAPI,
287 						"smapi::smapi_set_DSP_cfg: Serial port A irq %x conflicts with mwave_uart_irq %x\n", usSI & 0xFF, mwave_uart_irq);
288 #endif
289 #ifdef MWAVE_FUTZ_WITH_OTHER_DEVICES
290 					PRINTK_1(TRACE_SMAPI,
291 						"smapi::smapi_set_DSP_cfg Disabling conflicting serial port\n");
292 					bRC = smapi_request(0x1403, 0x0100, 0, usSI,
293 						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
294 					if (bRC) goto exit_smapi_request_error;
295 					bRC = smapi_request(0x1402, 0x0000, 0, 0,
296 						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
297 					if (bRC) goto exit_smapi_request_error;
298 #else
299 					goto exit_conflict;
300 #endif
301 				} else {
302 					if ((usSI >> 8) == uartio_index) {
303 #ifndef MWAVE_FUTZ_WITH_OTHER_DEVICES
304 						PRINTK_ERROR(KERN_ERR_MWAVE
305 							"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]);
306 #else
307 						PRINTK_3(TRACE_SMAPI,
308 							"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]);
309 #endif
310 #ifdef MWAVE_FUTZ_WITH_OTHER_DEVICES
311 						PRINTK_1(TRACE_SMAPI,
312 							"smapi::smapi_set_DSP_cfg Disabling conflicting serial port A\n");
313 						bRC = smapi_request (0x1403, 0x0100, 0, usSI,
314 							&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
315 						if (bRC) goto exit_smapi_request_error;
316 						bRC = smapi_request (0x1402, 0x0000, 0, 0,
317 							&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
318 						if (bRC) goto exit_smapi_request_error;
319 #else
320 						goto exit_conflict;
321 #endif
322 					}
323 				}
324 			}
325 		}
326 
327 		/* Check serial port B */
328 		bRC = smapi_request(0x1404, 0x0000, 0, 0,
329 			&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
330 		if (bRC) goto exit_smapi_request_error;
331 		/* bRC == 0 */
332 		if (usBX & 0x0100) {	/* serial port B is present */
333 			if (usCX & 1) {	/* serial port is enabled */
334 				if ((usSI & 0xFF) == mwave_uart_irq) {
335 #ifndef MWAVE_FUTZ_WITH_OTHER_DEVICES
336 					PRINTK_ERROR(KERN_ERR_MWAVE
337 						"smapi::smapi_set_DSP_cfg: Serial port B irq %x conflicts with mwave_uart_irq %x\n", usSI & 0xFF, mwave_uart_irq);
338 #else
339 					PRINTK_3(TRACE_SMAPI,
340 						"smapi::smapi_set_DSP_cfg: Serial port B irq %x conflicts with mwave_uart_irq %x\n", usSI & 0xFF, mwave_uart_irq);
341 #endif
342 #ifdef MWAVE_FUTZ_WITH_OTHER_DEVICES
343 					PRINTK_1(TRACE_SMAPI,
344 						"smapi::smapi_set_DSP_cfg Disabling conflicting serial port B\n");
345 					bRC = smapi_request(0x1405, 0x0100, 0, usSI,
346 						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
347 					if (bRC) goto exit_smapi_request_error;
348 					bRC = smapi_request(0x1404, 0x0000, 0, 0,
349 						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
350 					if (bRC) goto exit_smapi_request_error;
351 #else
352 					goto exit_conflict;
353 #endif
354 				} else {
355 					if ((usSI >> 8) == uartio_index) {
356 #ifndef MWAVE_FUTZ_WITH_OTHER_DEVICES
357 						PRINTK_ERROR(KERN_ERR_MWAVE
358 							"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]);
359 #else
360 						PRINTK_3(TRACE_SMAPI,
361 							"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]);
362 #endif
363 #ifdef MWAVE_FUTZ_WITH_OTHER_DEVICES
364 						PRINTK_1 (TRACE_SMAPI,
365 						    "smapi::smapi_set_DSP_cfg Disabling conflicting serial port B\n");
366 						bRC = smapi_request (0x1405, 0x0100, 0, usSI,
367 							&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
368 						if (bRC) goto exit_smapi_request_error;
369 						bRC = smapi_request (0x1404, 0x0000, 0, 0,
370 							&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
371 						if (bRC) goto exit_smapi_request_error;
372 #else
373 						goto exit_conflict;
374 #endif
375 					}
376 				}
377 			}
378 		}
379 
380 		/* Check IR port */
381 		bRC = smapi_request(0x1700, 0x0000, 0, 0,
382 			&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
383 		if (bRC) goto exit_smapi_request_error;
384 		bRC = smapi_request(0x1704, 0x0000, 0, 0,
385 			&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
386 		if (bRC) goto exit_smapi_request_error;
387 		/* bRC == 0 */
388 		if ((usCX & 0xff) != 0xff) { /* IR port not disabled */
389 			if ((usCX & 0xff) == mwave_uart_irq) {
390 #ifndef MWAVE_FUTZ_WITH_OTHER_DEVICES
391 				PRINTK_ERROR(KERN_ERR_MWAVE
392 					"smapi::smapi_set_DSP_cfg: IR port irq %x conflicts with mwave_uart_irq %x\n", usCX & 0xff, mwave_uart_irq);
393 #else
394 				PRINTK_3(TRACE_SMAPI,
395 					"smapi::smapi_set_DSP_cfg: IR port irq %x conflicts with mwave_uart_irq %x\n", usCX & 0xff, mwave_uart_irq);
396 #endif
397 #ifdef MWAVE_FUTZ_WITH_OTHER_DEVICES
398 				PRINTK_1(TRACE_SMAPI,
399 					"smapi::smapi_set_DSP_cfg Disabling conflicting IR port\n");
400 				bRC = smapi_request(0x1701, 0x0100, 0, 0,
401 					&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
402 				if (bRC) goto exit_smapi_request_error;
403 				bRC = smapi_request(0x1700, 0, 0, 0,
404 					&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
405 				if (bRC) goto exit_smapi_request_error;
406 				bRC = smapi_request(0x1705, 0x01ff, 0, usSI,
407 					&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
408 				if (bRC) goto exit_smapi_request_error;
409 				bRC = smapi_request(0x1704, 0x0000, 0, 0,
410 					&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
411 				if (bRC) goto exit_smapi_request_error;
412 #else
413 				goto exit_conflict;
414 #endif
415 			} else {
416 				if ((usSI & 0xff) == uartio_index) {
417 #ifndef MWAVE_FUTZ_WITH_OTHER_DEVICES
418 					PRINTK_ERROR(KERN_ERR_MWAVE
419 						"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]);
420 #else
421 					PRINTK_3(TRACE_SMAPI,
422 						"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]);
423 #endif
424 #ifdef MWAVE_FUTZ_WITH_OTHER_DEVICES
425 					PRINTK_1(TRACE_SMAPI,
426 						"smapi::smapi_set_DSP_cfg Disabling conflicting IR port\n");
427 					bRC = smapi_request(0x1701, 0x0100, 0, 0,
428 						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
429 					if (bRC) goto exit_smapi_request_error;
430 					bRC = smapi_request(0x1700, 0, 0, 0,
431 						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
432 					if (bRC) goto exit_smapi_request_error;
433 					bRC = smapi_request(0x1705, 0x01ff, 0, usSI,
434 						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
435 					if (bRC) goto exit_smapi_request_error;
436 					bRC = smapi_request(0x1704, 0x0000, 0, 0,
437 						&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
438 					if (bRC) goto exit_smapi_request_error;
439 #else
440 					goto exit_conflict;
441 #endif
442 				}
443 			}
444 		}
445 	}
446 
447 	bRC = smapi_request(0x1802, 0x0000, 0, 0,
448 		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
449 	if (bRC) goto exit_smapi_request_error;
450 
451 	if (mwave_3780i_io) {
452 		usDI = dspio_index;
453 	}
454 	if (mwave_3780i_irq) {
455 		usSI = (usSI & 0xff00) | mwave_3780i_irq;
456 	}
457 
458 	bRC = smapi_request(0x1803, 0x0101, usDI, usSI,
459 		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
460 	if (bRC) goto exit_smapi_request_error;
461 
462 	bRC = smapi_request(0x1804, 0x0000, 0, 0,
463 		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
464 	if (bRC) goto exit_smapi_request_error;
465 
466 	if (mwave_uart_io) {
467 		usSI = (usSI & 0x00ff) | (uartio_index << 8);
468 	}
469 	if (mwave_uart_irq) {
470 		usSI = (usSI & 0xff00) | mwave_uart_irq;
471 	}
472 	bRC = smapi_request(0x1805, 0x0101, 0, usSI,
473 		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
474 	if (bRC) goto exit_smapi_request_error;
475 
476 	bRC = smapi_request(0x1802, 0x0000, 0, 0,
477 		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
478 	if (bRC) goto exit_smapi_request_error;
479 
480 	bRC = smapi_request(0x1804, 0x0000, 0, 0,
481 		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
482 	if (bRC) goto exit_smapi_request_error;
483 
484 /* normal exit: */
485 	PRINTK_1(TRACE_SMAPI, "smapi::smapi_set_DSP_cfg exit\n");
486 	return 0;
487 
488 exit_conflict:
489 	/* Message has already been printed */
490 	return -EIO;
491 
492 exit_smapi_request_error:
493 	PRINTK_ERROR(KERN_ERR_MWAVE "smapi::smapi_set_DSP_cfg exit on smapi_request error bRC %x\n", bRC);
494 	return bRC;
495 }
496 
497 
smapi_set_DSP_power_state(bool bOn)498 int smapi_set_DSP_power_state(bool bOn)
499 {
500 	int bRC;
501 	unsigned short usAX, usBX, usCX, usDX, usDI, usSI;
502 	unsigned short usPowerFunction;
503 
504 	PRINTK_2(TRACE_SMAPI, "smapi::smapi_set_DSP_power_state entry bOn %x\n", bOn);
505 
506 	usPowerFunction = (bOn) ? 1 : 0;
507 
508 	bRC = smapi_request(0x4901, 0x0000, 0, usPowerFunction,
509 		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
510 
511 	PRINTK_2(TRACE_SMAPI, "smapi::smapi_set_DSP_power_state exit bRC %x\n", bRC);
512 
513 	return bRC;
514 }
515 
516 #if 0
517 static int SmapiQuerySystemID(void)
518 {
519 	int bRC = -EIO;
520 	unsigned short usAX = 0xffff, usBX = 0xffff, usCX = 0xffff,
521 		usDX = 0xffff, usDI = 0xffff, usSI = 0xffff;
522 
523 	printk("smapi::SmapiQUerySystemID entry\n");
524 	bRC = smapi_request(0x0000, 0, 0, 0,
525 		&usAX, &usBX, &usCX, &usDX, &usDI, &usSI);
526 
527 	if (bRC == 0) {
528 		printk("AX=%x, BX=%x, CX=%x, DX=%x, DI=%x, SI=%x\n",
529 			usAX, usBX, usCX, usDX, usDI, usSI);
530 	} else {
531 		printk("smapi::SmapiQuerySystemID smapi_request error\n");
532 	}
533 
534 	return bRC;
535 }
536 #endif  /*  0  */
537 
smapi_init(void)538 int smapi_init(void)
539 {
540 	int retval = -EIO;
541 	unsigned short usSmapiID = 0;
542 	unsigned long flags;
543 
544 	PRINTK_1(TRACE_SMAPI, "smapi::smapi_init entry\n");
545 
546 	spin_lock_irqsave(&rtc_lock, flags);
547 	usSmapiID = CMOS_READ(0x7C);
548 	usSmapiID |= (CMOS_READ(0x7D) << 8);
549 	spin_unlock_irqrestore(&rtc_lock, flags);
550 	PRINTK_2(TRACE_SMAPI, "smapi::smapi_init usSmapiID %x\n", usSmapiID);
551 
552 	if (usSmapiID == 0x5349) {
553 		spin_lock_irqsave(&rtc_lock, flags);
554 		g_usSmapiPort = CMOS_READ(0x7E);
555 		g_usSmapiPort |= (CMOS_READ(0x7F) << 8);
556 		spin_unlock_irqrestore(&rtc_lock, flags);
557 		if (g_usSmapiPort == 0) {
558 			PRINTK_ERROR("smapi::smapi_init, ERROR unable to read from SMAPI port\n");
559 		} else {
560 			PRINTK_2(TRACE_SMAPI,
561 				"smapi::smapi_init, exit true g_usSmapiPort %x\n",
562 				g_usSmapiPort);
563 			retval = 0;
564 			//SmapiQuerySystemID();
565 		}
566 	} else {
567 		PRINTK_ERROR("smapi::smapi_init, ERROR invalid usSmapiID\n");
568 		retval = -ENXIO;
569 	}
570 
571 	return retval;
572 }
573