source: sbliveos2/trunk/sblive/hwaccess.c@ 151

Last change on this file since 151 was 142, checked in by ktk, 25 years ago

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1/* $Id: hwaccess.c 142 2000-04-23 14:55:46Z ktk $ */
2
3
4/*
5 **********************************************************************
6 * hwaccess.c -- Hardware access layer
7 * Copyright 1999, 2000 Creative Labs, Inc.
8 *
9 **********************************************************************
10 *
11 * Date Author Summary of changes
12 * ---- ------ ------------------
13 * October 20, 1999 Bertrand Lee base code release
14 * December 9, 1999 Jon Taylor rewrote the I/O subsystem
15 *
16 **********************************************************************
17 *
18 * This program is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU General Public License as
20 * published by the Free Software Foundation; either version 2 of
21 * the License, or (at your option) any later version.
22 *
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public
29 * License along with this program; if not, write to the Free
30 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
31 * USA.
32 *
33 **********************************************************************
34 */
35
36#include "hwaccess.h"
37#include "icardmid.h"
38
39/*************************************************************************
40* Function : srToPitch *
41* Input : sampleRate - sampling rate *
42* Return : pitch value *
43* About : convert sampling rate to pitch *
44* Note : for 8010, sampling rate is at 48kHz, this function should *
45* be changed. *
46*************************************************************************/
47u32 srToPitch(u32 sampleRate)
48{
49 int i;
50
51 /* FIXME: These tables should be defined in a headerfile */
52 static u32 logMagTable[128] = {
53 0x00000, 0x02dfc, 0x05b9e, 0x088e6, 0x0b5d6, 0x0e26f, 0x10eb3, 0x13aa2,
54 0x1663f, 0x1918a, 0x1bc84, 0x1e72e, 0x2118b, 0x23b9a, 0x2655d, 0x28ed5,
55 0x2b803, 0x2e0e8, 0x30985, 0x331db, 0x359eb, 0x381b6, 0x3a93d, 0x3d081,
56 0x3f782, 0x41e42, 0x444c1, 0x46b01, 0x49101, 0x4b6c4, 0x4dc49, 0x50191,
57 0x5269e, 0x54b6f, 0x57006, 0x59463, 0x5b888, 0x5dc74, 0x60029, 0x623a7,
58 0x646ee, 0x66a00, 0x68cdd, 0x6af86, 0x6d1fa, 0x6f43c, 0x7164b, 0x73829,
59 0x759d4, 0x77b4f, 0x79c9a, 0x7bdb5, 0x7dea1, 0x7ff5e, 0x81fed, 0x8404e,
60 0x86082, 0x88089, 0x8a064, 0x8c014, 0x8df98, 0x8fef1, 0x91e20, 0x93d26,
61 0x95c01, 0x97ab4, 0x9993e, 0x9b79f, 0x9d5d9, 0x9f3ec, 0xa11d8, 0xa2f9d,
62 0xa4d3c, 0xa6ab5, 0xa8808, 0xaa537, 0xac241, 0xadf26, 0xafbe7, 0xb1885,
63 0xb3500, 0xb5157, 0xb6d8c, 0xb899f, 0xba58f, 0xbc15e, 0xbdd0c, 0xbf899,
64 0xc1404, 0xc2f50, 0xc4a7b, 0xc6587, 0xc8073, 0xc9b3f, 0xcb5ed, 0xcd07c,
65 0xceaec, 0xd053f, 0xd1f73, 0xd398a, 0xd5384, 0xd6d60, 0xd8720, 0xda0c3,
66 0xdba4a, 0xdd3b4, 0xded03, 0xe0636, 0xe1f4e, 0xe384a, 0xe512c, 0xe69f3,
67 0xe829f, 0xe9b31, 0xeb3a9, 0xecc08, 0xee44c, 0xefc78, 0xf148a, 0xf2c83,
68 0xf4463, 0xf5c2a, 0xf73da, 0xf8b71, 0xfa2f0, 0xfba57, 0xfd1a7, 0xfe8df
69 };
70
71 static char logSlopeTable[128] = {
72 0x5c, 0x5c, 0x5b, 0x5a, 0x5a, 0x59, 0x58, 0x58,
73 0x57, 0x56, 0x56, 0x55, 0x55, 0x54, 0x53, 0x53,
74 0x52, 0x52, 0x51, 0x51, 0x50, 0x50, 0x4f, 0x4f,
75 0x4e, 0x4d, 0x4d, 0x4d, 0x4c, 0x4c, 0x4b, 0x4b,
76 0x4a, 0x4a, 0x49, 0x49, 0x48, 0x48, 0x47, 0x47,
77 0x47, 0x46, 0x46, 0x45, 0x45, 0x45, 0x44, 0x44,
78 0x43, 0x43, 0x43, 0x42, 0x42, 0x42, 0x41, 0x41,
79 0x41, 0x40, 0x40, 0x40, 0x3f, 0x3f, 0x3f, 0x3e,
80 0x3e, 0x3e, 0x3d, 0x3d, 0x3d, 0x3c, 0x3c, 0x3c,
81 0x3b, 0x3b, 0x3b, 0x3b, 0x3a, 0x3a, 0x3a, 0x39,
82 0x39, 0x39, 0x39, 0x38, 0x38, 0x38, 0x38, 0x37,
83 0x37, 0x37, 0x37, 0x36, 0x36, 0x36, 0x36, 0x35,
84 0x35, 0x35, 0x35, 0x34, 0x34, 0x34, 0x34, 0x34,
85 0x33, 0x33, 0x33, 0x33, 0x32, 0x32, 0x32, 0x32,
86 0x32, 0x31, 0x31, 0x31, 0x31, 0x31, 0x30, 0x30,
87 0x30, 0x30, 0x30, 0x2f, 0x2f, 0x2f, 0x2f, 0x2f
88 };
89
90 if (sampleRate == 0)
91 return (0); /* Bail out if no leading "1" */
92
93 sampleRate *= 11185; /* Scale 48000 to 0x20002380 */
94
95 for (i = 31; i > 0; i--) {
96 if (sampleRate & 0x80000000) { /* Detect leading "1" */
97 return (u32) (((s32) (i - 15) << 20) +
98 logMagTable[0x7f & (sampleRate >> 24)] +
99 (0x7f & (sampleRate >> 17)) * logSlopeTable[0x7f & (sampleRate >> 24)]);
100 }
101 sampleRate = sampleRate << 1;
102 }
103
104 DPF(2, "srToPitch: BUG!\n");
105 return 0; /* Should never reach this point */
106}
107
108/* Returns an attenuation based upon a cumulative volume value */
109
110/* Algorithm calculates 0x200 - 0x10 log2 (input) */
111u8 sumVolumeToAttenuation(u32 value)
112{
113 u16 count = 16;
114 s16 ans;
115
116 if (value == 0)
117 return 0xFF;
118
119 /* Find first SET bit. This is the integer part of the value */
120 while ((value & 0x10000) == 0) {
121 value <<= 1;
122 count--;
123 }
124
125 /* The REST of the data is the fractional part. */
126 ans = (s16) (0x110 - ((count << 4) + ((value & 0x0FFFFL) >> 12)));
127 if (ans > 0xFF)
128 ans = 0xFF;
129
130 return (u8) ans;
131}
132
133/*******************************************
134* write/read PCI function 0 registers *
135********************************************/
136void sblive_writefn0(struct emu10k1_card *card, u8 reg, u32 data)
137{
138 unsigned long flags;
139
140 spin_lock_irqsave(&card->lock, flags);
141 outl(data, card->iobase + reg);
142 spin_unlock_irqrestore(&card->lock, flags);
143
144 return;
145}
146
147void sblive_wrtmskfn0(struct emu10k1_card *card, u8 reg, u32 mask, u32 data)
148{
149 unsigned long flags;
150
151 data &= mask;
152
153 spin_lock_irqsave(&card->lock, flags);
154 data |= inl(card->iobase + reg) & ~mask;
155 outl(data, card->iobase + reg);
156 spin_unlock_irqrestore(&card->lock, flags);
157
158 return;
159}
160
161u32 sblive_readfn0(struct emu10k1_card * card, u8 reg)
162{
163 u32 val;
164 unsigned long flags;
165
166 spin_lock_irqsave(&card->lock, flags);
167 val = inl(card->iobase + reg);
168 spin_unlock_irqrestore(&card->lock, flags);
169 return val;
170}
171
172u32 sblive_rdmskfn0(struct emu10k1_card * card, u8 reg, u32 mask)
173{
174 u32 val;
175 unsigned long flags;
176
177 spin_lock_irqsave(&card->lock, flags);
178 val = inl(card->iobase + reg);
179 spin_unlock_irqrestore(&card->lock, flags);
180 return val & mask;
181}
182
183/************************************************************************
184* write/read Emu10k1 pointer-offset register set, accessed through *
185* the PTR and DATA registers *
186*************************************************************************/
187void sblive_writeptr(struct emu10k1_card *card, u32 reg, u32 channel, u32 data)
188{
189 u32 regptr;
190 unsigned long flags;
191
192 regptr = ((reg << 16) & PTR_ADDRESS_MASK) | (channel & PTR_CHANNELNUM_MASK);
193
194 if (reg & 0xff000000) {
195 u32 mask;
196 u8 size, offset;
197
198 size = (reg >> 24) & 0x3f;
199 offset = (reg >> 16) & 0x1f;
200 mask = ((1 << size) - 1) << offset;
201 data = (data << offset) & mask;
202
203 spin_lock_irqsave(&card->lock, flags);
204 outl(regptr, card->iobase + PTR);
205 data |= inl(card->iobase + DATA) & ~mask;
206 outl(data, card->iobase + DATA);
207 spin_unlock_irqrestore(&card->lock, flags);
208 } else {
209 spin_lock_irqsave(&card->lock, flags);
210 outl(regptr, card->iobase + PTR);
211 outl(data, card->iobase + DATA);
212 spin_unlock_irqrestore(&card->lock, flags);
213 }
214
215 return;
216}
217
218u32 sblive_readptr(struct emu10k1_card * card, u32 reg, u32 channel)
219{
220 u32 regptr, val;
221 unsigned long flags;
222
223 regptr = ((reg << 16) & PTR_ADDRESS_MASK) | (channel & PTR_CHANNELNUM_MASK);
224
225 if (reg & 0xff000000) {
226 u32 mask;
227 u8 size, offset;
228
229 size = (reg >> 24) & 0x3f;
230 offset = (reg >> 16) & 0x1f;
231 mask = ((1 << size) - 1) << offset;
232
233 spin_lock_irqsave(&card->lock, flags);
234 outl(regptr, card->iobase + PTR);
235 val = inl(card->iobase + DATA);
236 spin_unlock_irqrestore(&card->lock, flags);
237
238 return (val & mask) >> offset;
239 } else {
240 spin_lock_irqsave(&card->lock, flags);
241 outl(regptr, card->iobase + PTR);
242 val = inl(card->iobase + DATA);
243 spin_unlock_irqrestore(&card->lock, flags);
244
245 return val;
246 }
247}
248
249void emu10k1_set_stop_on_loop(struct emu10k1_card *card, u32 voicenum)
250{
251 /* Voice interrupt */
252 if (voicenum >= 32)
253 sblive_writeptr(card, SOLEH | ((0x0100 | (voicenum - 32)) << 16), 0, 1);
254 else
255 sblive_writeptr(card, SOLEL | ((0x0100 | voicenum) << 16), 0, 1);
256
257 return;
258}
259
260void emu10k1_clear_stop_on_loop(struct emu10k1_card *card, u32 voicenum)
261{
262 /* Voice interrupt */
263 if (voicenum >= 32)
264 sblive_writeptr(card, SOLEH | ((0x0100 | (voicenum - 32)) << 16), 0, 0);
265 else
266 sblive_writeptr(card, SOLEL | ((0x0100 | voicenum) << 16), 0, 0);
267
268 return;
269}
270
271static void sblive_wcwait(struct emu10k1_card *card, u32 wait)
272{
273 volatile unsigned uCount;
274 u32 newtime = 0, curtime;
275
276 curtime = READ_FN0(card, WC_SAMPLECOUNTER);
277 while (wait--) {
278 uCount = 0;
279 while (uCount++ < TIMEOUT) {
280 newtime = READ_FN0(card, WC_SAMPLECOUNTER);
281 if (newtime != curtime)
282 break;
283 }
284
285 if (uCount >= TIMEOUT)
286 break;
287
288 curtime = newtime;
289 }
290}
291
292int sblive_readac97(struct emu10k1_card *card, u8 index, u16 * data)
293{
294 unsigned long flags;
295
296 spin_lock_irqsave(&card->lock, flags);
297
298 outb(index, card->mixeraddx + 2);
299 *data = inw(card->mixeraddx);
300
301 spin_unlock_irqrestore(&card->lock, flags);
302
303 return CTSTATUS_SUCCESS;
304}
305
306int sblive_writeac97(struct emu10k1_card *card, u8 index, u16 data)
307{
308 unsigned long flags;
309
310 spin_lock_irqsave(&card->lock, flags);
311
312 outb(index, card->mixeraddx + 2);
313 outw(data, card->mixeraddx);
314
315 spin_unlock_irqrestore(&card->lock, flags);
316
317 return CTSTATUS_SUCCESS;
318}
319
320int sblive_rmwac97(struct emu10k1_card *card, u8 index, u16 data, u16 mask)
321{
322 u16 temp;
323 unsigned long flags;
324
325 spin_lock_irqsave(&card->lock, flags);
326
327 outb(index, card->mixeraddx + 2);
328 temp = inw(card->mixeraddx);
329 temp &= ~mask;
330 data &= mask;
331 temp |= data;
332 outw(temp, card->mixeraddx);
333
334 spin_unlock_irqrestore(&card->lock, flags);
335
336 return CTSTATUS_SUCCESS;
337}
338
339/*********************************************************
340* MPU access functions *
341**********************************************************/
342
343int emu10k1_mpu_write_data(struct emu10k1_card *card, u8 data)
344{
345 unsigned long flags;
346 int ret;
347
348 spin_lock_irqsave(&card->lock, flags);
349
350 if ((inb(card->iobase + MUSTAT) & MUSTAT_ORDYN) == 0) {
351 outb(data, card->iobase + MUDATA);
352 ret = CTSTATUS_SUCCESS;
353 } else
354 ret = CTSTATUS_BUSY;
355
356 spin_unlock_irqrestore(&card->lock, flags);
357
358 return ret;
359}
360
361int emu10k1_mpu_read_data(struct emu10k1_card *card, u8 * data)
362{
363 unsigned long flags;
364 int ret;
365
366 spin_lock_irqsave(&card->lock, flags);
367
368 if ((inb(card->iobase + MUSTAT) & MUSTAT_IRDYN) == 0) {
369 *data = inb(card->iobase + MUDATA);
370 ret = CTSTATUS_SUCCESS;
371 } else
372 ret = CTSTATUS_NODATA;
373
374 spin_unlock_irqrestore(&card->lock, flags);
375
376 return ret;
377}
378
379int emu10k1_mpu_reset(struct emu10k1_card *card)
380{
381 u8 status;
382 unsigned long flags;
383
384 DPF(2, "emu10k1_mpu_reset()\n");
385
386 if (card->mpuacqcount == 0) {
387 spin_lock_irqsave(&card->lock, flags);
388 outb(MUCMD_RESET, card->iobase + MUCMD);
389 spin_unlock_irqrestore(&card->lock, flags);
390
391 sblive_wcwait(card, 8);
392
393 spin_lock_irqsave(&card->lock, flags);
394 outb(MUCMD_RESET, card->iobase + MUCMD);
395 spin_unlock_irqrestore(&card->lock, flags);
396
397 sblive_wcwait(card, 8);
398
399 spin_lock_irqsave(&card->lock, flags);
400 outb(MUCMD_ENTERUARTMODE, card->iobase + MUCMD);
401 spin_unlock_irqrestore(&card->lock, flags);
402
403 sblive_wcwait(card, 8);
404
405 spin_lock_irqsave(&card->lock, flags);
406 status = inb(card->iobase + MUDATA);
407 spin_unlock_irqrestore(&card->lock, flags);
408
409 if (status == 0xfe)
410 return CTSTATUS_SUCCESS;
411 else
412 return CTSTATUS_ERROR;
413 }
414
415 return CTSTATUS_SUCCESS;
416}
417
418int emu10k1_mpu_acquire(struct emu10k1_card *card)
419{
420 /* FIXME: This should be a macro */
421 ++card->mpuacqcount;
422
423 return CTSTATUS_SUCCESS;
424}
425
426int emu10k1_mpu_release(struct emu10k1_card *card)
427{
428 /* FIXME: this should be a macro */
429 --card->mpuacqcount;
430
431 return CTSTATUS_SUCCESS;
432}
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