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target/mips: Move cpu_signal_handler definition around
[qemu/kevin.git] / hw / audio / sb16.c
blob8b207004102548cd2f9e29bf840ad0c24ce9e740
1 /*
2 * QEMU Soundblaster 16 emulation
3 *
4 * Copyright (c) 2003-2005 Vassili Karpov (malc)
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "hw/audio/soundhw.h"
27 #include "audio/audio.h"
28 #include "hw/irq.h"
29 #include "hw/isa/isa.h"
30 #include "hw/qdev-properties.h"
31 #include "migration/vmstate.h"
32 #include "qemu/timer.h"
33 #include "qemu/host-utils.h"
34 #include "qemu/log.h"
35 #include "qemu/module.h"
36 #include "qapi/error.h"
37 #include "qom/object.h"
38
39 #define dolog(...) AUD_log ("sb16", __VA_ARGS__)
40
41 /* #define DEBUG */
42 /* #define DEBUG_SB16_MOST */
43
44 #ifdef DEBUG
45 #define ldebug(...) dolog (__VA_ARGS__)
46 #else
47 #define ldebug(...)
48 #endif
49
50 static const char e3[] = "COPYRIGHT (C) CREATIVE TECHNOLOGY LTD, 1992.";
51
52 #define TYPE_SB16 "sb16"
53 OBJECT_DECLARE_SIMPLE_TYPE(SB16State, SB16)
54
55 struct SB16State {
56 ISADevice parent_obj;
57
58 QEMUSoundCard card;
59 qemu_irq pic;
60 uint32_t irq;
61 uint32_t dma;
62 uint32_t hdma;
63 uint32_t port;
64 uint32_t ver;
65 IsaDma *isa_dma;
66 IsaDma *isa_hdma;
67
68 int in_index;
69 int out_data_len;
70 int fmt_stereo;
71 int fmt_signed;
72 int fmt_bits;
73 AudioFormat fmt;
74 int dma_auto;
75 int block_size;
76 int fifo;
77 int freq;
78 int time_const;
79 int speaker;
80 int needed_bytes;
81 int cmd;
82 int use_hdma;
83 int highspeed;
84 int can_write;
85
86 int v2x6;
87
88 uint8_t csp_param;
89 uint8_t csp_value;
90 uint8_t csp_mode;
91 uint8_t csp_regs[256];
92 uint8_t csp_index;
93 uint8_t csp_reg83[4];
94 int csp_reg83r;
95 int csp_reg83w;
96
97 uint8_t in2_data[10];
98 uint8_t out_data[50];
99 uint8_t test_reg;
100 uint8_t last_read_byte;
101 int nzero;
102
103 int left_till_irq;
104
105 int dma_running;
106 int bytes_per_second;
107 int align;
108 int audio_free;
109 SWVoiceOut *voice;
110
111 QEMUTimer *aux_ts;
112 /* mixer state */
113 int mixer_nreg;
114 uint8_t mixer_regs[256];
115 PortioList portio_list;
116 };
117
118 static void SB_audio_callback (void *opaque, int free);
119
120 static int magic_of_irq (int irq)
121 {
122 switch (irq) {
123 case 5:
124 return 2;
125 case 7:
126 return 4;
127 case 9:
128 return 1;
129 case 10:
130 return 8;
131 default:
132 qemu_log_mask(LOG_GUEST_ERROR, "bad irq %d\n", irq);
133 return 2;
134 }
135 }
136
137 static int irq_of_magic (int magic)
138 {
139 switch (magic) {
140 case 1:
141 return 9;
142 case 2:
143 return 5;
144 case 4:
145 return 7;
146 case 8:
147 return 10;
148 default:
149 qemu_log_mask(LOG_GUEST_ERROR, "bad irq magic %d\n", magic);
150 return -1;
151 }
152 }
153
154 #if 0
155 static void log_dsp (SB16State *dsp)
156 {
157 ldebug ("%s:%s:%d:%s:dmasize=%d:freq=%d:const=%d:speaker=%d\n",
158 dsp->fmt_stereo ? "Stereo" : "Mono",
159 dsp->fmt_signed ? "Signed" : "Unsigned",
160 dsp->fmt_bits,
161 dsp->dma_auto ? "Auto" : "Single",
162 dsp->block_size,
163 dsp->freq,
164 dsp->time_const,
165 dsp->speaker);
166 }
167 #endif
168
169 static void speaker (SB16State *s, int on)
170 {
171 s->speaker = on;
172 /* AUD_enable (s->voice, on); */
173 }
174
175 static void control (SB16State *s, int hold)
176 {
177 int dma = s->use_hdma ? s->hdma : s->dma;
178 IsaDma *isa_dma = s->use_hdma ? s->isa_hdma : s->isa_dma;
179 IsaDmaClass *k = ISADMA_GET_CLASS(isa_dma);
180 s->dma_running = hold;
181
182 ldebug ("hold %d high %d dma %d\n", hold, s->use_hdma, dma);
183
184 if (hold) {
185 k->hold_DREQ(isa_dma, dma);
186 AUD_set_active_out (s->voice, 1);
187 }
188 else {
189 k->release_DREQ(isa_dma, dma);
190 AUD_set_active_out (s->voice, 0);
191 }
192 }
193
194 static void aux_timer (void *opaque)
195 {
196 SB16State *s = opaque;
197 s->can_write = 1;
198 qemu_irq_raise (s->pic);
199 }
200
201 #define DMA8_AUTO 1
202 #define DMA8_HIGH 2
203
204 static void continue_dma8 (SB16State *s)
205 {
206 if (s->freq > 0) {
207 struct audsettings as;
208
209 s->audio_free = 0;
210
211 as.freq = s->freq;
212 as.nchannels = 1 << s->fmt_stereo;
213 as.fmt = s->fmt;
214 as.endianness = 0;
215
216 s->voice = AUD_open_out (
217 &s->card,
218 s->voice,
219 "sb16",
220 s,
221 SB_audio_callback,
222 &as
223 );
224 }
225
226 control (s, 1);
227 }
228
229 static void dma_cmd8 (SB16State *s, int mask, int dma_len)
230 {
231 s->fmt = AUDIO_FORMAT_U8;
232 s->use_hdma = 0;
233 s->fmt_bits = 8;
234 s->fmt_signed = 0;
235 s->fmt_stereo = (s->mixer_regs[0x0e] & 2) != 0;
236 if (-1 == s->time_const) {
237 if (s->freq <= 0)
238 s->freq = 11025;
239 }
240 else {
241 int tmp = (256 - s->time_const);
242 s->freq = (1000000 + (tmp / 2)) / tmp;
243 }
244
245 if (dma_len != -1) {
246 s->block_size = dma_len << s->fmt_stereo;
247 }
248 else {
249 /* This is apparently the only way to make both Act1/PL
250 and SecondReality/FC work
251
252 Act1 sets block size via command 0x48 and it's an odd number
253 SR does the same with even number
254 Both use stereo, and Creatives own documentation states that
255 0x48 sets block size in bytes less one.. go figure */
256 s->block_size &= ~s->fmt_stereo;
257 }
258
259 s->freq >>= s->fmt_stereo;
260 s->left_till_irq = s->block_size;
261 s->bytes_per_second = (s->freq << s->fmt_stereo);
262 /* s->highspeed = (mask & DMA8_HIGH) != 0; */
263 s->dma_auto = (mask & DMA8_AUTO) != 0;
264 s->align = (1 << s->fmt_stereo) - 1;
265
266 if (s->block_size & s->align) {
267 qemu_log_mask(LOG_GUEST_ERROR, "warning: misaligned block size %d,"
268 " alignment %d\n", s->block_size, s->align + 1);
269 }
270
271 ldebug ("freq %d, stereo %d, sign %d, bits %d, "
272 "dma %d, auto %d, fifo %d, high %d\n",
273 s->freq, s->fmt_stereo, s->fmt_signed, s->fmt_bits,
274 s->block_size, s->dma_auto, s->fifo, s->highspeed);
275
276 continue_dma8 (s);
277 speaker (s, 1);
278 }
279
280 static void dma_cmd (SB16State *s, uint8_t cmd, uint8_t d0, int dma_len)
281 {
282 s->use_hdma = cmd < 0xc0;
283 s->fifo = (cmd >> 1) & 1;
284 s->dma_auto = (cmd >> 2) & 1;
285 s->fmt_signed = (d0 >> 4) & 1;
286 s->fmt_stereo = (d0 >> 5) & 1;
287
288 switch (cmd >> 4) {
289 case 11:
290 s->fmt_bits = 16;
291 break;
292
293 case 12:
294 s->fmt_bits = 8;
295 break;
296 }
297
298 if (-1 != s->time_const) {
299 #if 1
300 int tmp = 256 - s->time_const;
301 s->freq = (1000000 + (tmp / 2)) / tmp;
302 #else
303 /* s->freq = 1000000 / ((255 - s->time_const) << s->fmt_stereo); */
304 s->freq = 1000000 / ((255 - s->time_const));
305 #endif
306 s->time_const = -1;
307 }
308
309 s->block_size = dma_len + 1;
310 s->block_size <<= (s->fmt_bits == 16);
311 if (!s->dma_auto) {
312 /* It is clear that for DOOM and auto-init this value
313 shouldn't take stereo into account, while Miles Sound Systems
314 setsound.exe with single transfer mode wouldn't work without it
315 wonders of SB16 yet again */
316 s->block_size <<= s->fmt_stereo;
317 }
318
319 ldebug ("freq %d, stereo %d, sign %d, bits %d, "
320 "dma %d, auto %d, fifo %d, high %d\n",
321 s->freq, s->fmt_stereo, s->fmt_signed, s->fmt_bits,
322 s->block_size, s->dma_auto, s->fifo, s->highspeed);
323
324 if (16 == s->fmt_bits) {
325 if (s->fmt_signed) {
326 s->fmt = AUDIO_FORMAT_S16;
327 }
328 else {
329 s->fmt = AUDIO_FORMAT_U16;
330 }
331 }
332 else {
333 if (s->fmt_signed) {
334 s->fmt = AUDIO_FORMAT_S8;
335 }
336 else {
337 s->fmt = AUDIO_FORMAT_U8;
338 }
339 }
340
341 s->left_till_irq = s->block_size;
342
343 s->bytes_per_second = (s->freq << s->fmt_stereo) << (s->fmt_bits == 16);
344 s->highspeed = 0;
345 s->align = (1 << (s->fmt_stereo + (s->fmt_bits == 16))) - 1;
346 if (s->block_size & s->align) {
347 qemu_log_mask(LOG_GUEST_ERROR, "warning: misaligned block size %d,"
348 " alignment %d\n", s->block_size, s->align + 1);
349 }
350
351 if (s->freq) {
352 struct audsettings as;
353
354 s->audio_free = 0;
355
356 as.freq = s->freq;
357 as.nchannels = 1 << s->fmt_stereo;
358 as.fmt = s->fmt;
359 as.endianness = 0;
360
361 s->voice = AUD_open_out (
362 &s->card,
363 s->voice,
364 "sb16",
365 s,
366 SB_audio_callback,
367 &as
368 );
369 }
370
371 control (s, 1);
372 speaker (s, 1);
373 }
374
375 static inline void dsp_out_data (SB16State *s, uint8_t val)
376 {
377 ldebug ("outdata %#x\n", val);
378 if ((size_t) s->out_data_len < sizeof (s->out_data)) {
379 s->out_data[s->out_data_len++] = val;
380 }
381 }
382
383 static inline uint8_t dsp_get_data (SB16State *s)
384 {
385 if (s->in_index) {
386 return s->in2_data[--s->in_index];
387 }
388 else {
389 dolog ("buffer underflow\n");
390 return 0;
391 }
392 }
393
394 static void command (SB16State *s, uint8_t cmd)
395 {
396 ldebug ("command %#x\n", cmd);
397
398 if (cmd > 0xaf && cmd < 0xd0) {
399 if (cmd & 8) {
400 qemu_log_mask(LOG_UNIMP, "ADC not yet supported (command %#x)\n",
401 cmd);
402 }
403
404 switch (cmd >> 4) {
405 case 11:
406 case 12:
407 break;
408 default:
409 qemu_log_mask(LOG_GUEST_ERROR, "%#x wrong bits\n", cmd);
410 }
411 s->needed_bytes = 3;
412 }
413 else {
414 s->needed_bytes = 0;
415
416 switch (cmd) {
417 case 0x03:
418 dsp_out_data (s, 0x10); /* s->csp_param); */
419 goto warn;
420
421 case 0x04:
422 s->needed_bytes = 1;
423 goto warn;
424
425 case 0x05:
426 s->needed_bytes = 2;
427 goto warn;
428
429 case 0x08:
430 /* __asm__ ("int3"); */
431 goto warn;
432
433 case 0x0e:
434 s->needed_bytes = 2;
435 goto warn;
436
437 case 0x09:
438 dsp_out_data (s, 0xf8);
439 goto warn;
440
441 case 0x0f:
442 s->needed_bytes = 1;
443 goto warn;
444
445 case 0x10:
446 s->needed_bytes = 1;
447 goto warn;
448
449 case 0x14:
450 s->needed_bytes = 2;
451 s->block_size = 0;
452 break;
453
454 case 0x1c: /* Auto-Initialize DMA DAC, 8-bit */
455 dma_cmd8 (s, DMA8_AUTO, -1);
456 break;
457
458 case 0x20: /* Direct ADC, Juice/PL */
459 dsp_out_data (s, 0xff);
460 goto warn;
461
462 case 0x35:
463 qemu_log_mask(LOG_UNIMP, "0x35 - MIDI command not implemented\n");
464 break;
465
466 case 0x40:
467 s->freq = -1;
468 s->time_const = -1;
469 s->needed_bytes = 1;
470 break;
471
472 case 0x41:
473 s->freq = -1;
474 s->time_const = -1;
475 s->needed_bytes = 2;
476 break;
477
478 case 0x42:
479 s->freq = -1;
480 s->time_const = -1;
481 s->needed_bytes = 2;
482 goto warn;
483
484 case 0x45:
485 dsp_out_data (s, 0xaa);
486 goto warn;
487
488 case 0x47: /* Continue Auto-Initialize DMA 16bit */
489 break;
490
491 case 0x48:
492 s->needed_bytes = 2;
493 break;
494
495 case 0x74:
496 s->needed_bytes = 2; /* DMA DAC, 4-bit ADPCM */
497 qemu_log_mask(LOG_UNIMP, "0x75 - DMA DAC, 4-bit ADPCM not"
498 " implemented\n");
499 break;
500
501 case 0x75: /* DMA DAC, 4-bit ADPCM Reference */
502 s->needed_bytes = 2;
503 qemu_log_mask(LOG_UNIMP, "0x74 - DMA DAC, 4-bit ADPCM Reference not"
504 " implemented\n");
505 break;
506
507 case 0x76: /* DMA DAC, 2.6-bit ADPCM */
508 s->needed_bytes = 2;
509 qemu_log_mask(LOG_UNIMP, "0x74 - DMA DAC, 2.6-bit ADPCM not"
510 " implemented\n");
511 break;
512
513 case 0x77: /* DMA DAC, 2.6-bit ADPCM Reference */
514 s->needed_bytes = 2;
515 qemu_log_mask(LOG_UNIMP, "0x74 - DMA DAC, 2.6-bit ADPCM Reference"
516 " not implemented\n");
517 break;
518
519 case 0x7d:
520 qemu_log_mask(LOG_UNIMP, "0x7d - Autio-Initialize DMA DAC, 4-bit"
521 " ADPCM Reference\n");
522 qemu_log_mask(LOG_UNIMP, "not implemented\n");
523 break;
524
525 case 0x7f:
526 qemu_log_mask(LOG_UNIMP, "0x7d - Autio-Initialize DMA DAC, 2.6-bit"
527 " ADPCM Reference\n");
528 qemu_log_mask(LOG_UNIMP, "not implemented\n");
529 break;
530
531 case 0x80:
532 s->needed_bytes = 2;
533 break;
534
535 case 0x90:
536 case 0x91:
537 dma_cmd8 (s, ((cmd & 1) == 0) | DMA8_HIGH, -1);
538 break;
539
540 case 0xd0: /* halt DMA operation. 8bit */
541 control (s, 0);
542 break;
543
544 case 0xd1: /* speaker on */
545 speaker (s, 1);
546 break;
547
548 case 0xd3: /* speaker off */
549 speaker (s, 0);
550 break;
551
552 case 0xd4: /* continue DMA operation. 8bit */
553 /* KQ6 (or maybe Sierras audblst.drv in general) resets
554 the frequency between halt/continue */
555 continue_dma8 (s);
556 break;
557
558 case 0xd5: /* halt DMA operation. 16bit */
559 control (s, 0);
560 break;
561
562 case 0xd6: /* continue DMA operation. 16bit */
563 control (s, 1);
564 break;
565
566 case 0xd9: /* exit auto-init DMA after this block. 16bit */
567 s->dma_auto = 0;
568 break;
569
570 case 0xda: /* exit auto-init DMA after this block. 8bit */
571 s->dma_auto = 0;
572 break;
573
574 case 0xe0: /* DSP identification */
575 s->needed_bytes = 1;
576 break;
577
578 case 0xe1:
579 dsp_out_data (s, s->ver & 0xff);
580 dsp_out_data (s, s->ver >> 8);
581 break;
582
583 case 0xe2:
584 s->needed_bytes = 1;
585 goto warn;
586
587 case 0xe3:
588 {
589 int i;
590 for (i = sizeof (e3) - 1; i >= 0; --i)
591 dsp_out_data (s, e3[i]);
592 }
593 break;
594
595 case 0xe4: /* write test reg */
596 s->needed_bytes = 1;
597 break;
598
599 case 0xe7:
600 qemu_log_mask(LOG_UNIMP, "Attempt to probe for ESS (0xe7)?\n");
601 break;
602
603 case 0xe8: /* read test reg */
604 dsp_out_data (s, s->test_reg);
605 break;
606
607 case 0xf2:
608 case 0xf3:
609 dsp_out_data (s, 0xaa);
610 s->mixer_regs[0x82] |= (cmd == 0xf2) ? 1 : 2;
611 qemu_irq_raise (s->pic);
612 break;
613
614 case 0xf9:
615 s->needed_bytes = 1;
616 goto warn;
617
618 case 0xfa:
619 dsp_out_data (s, 0);
620 goto warn;
621
622 case 0xfc: /* FIXME */
623 dsp_out_data (s, 0);
624 goto warn;
625
626 default:
627 qemu_log_mask(LOG_UNIMP, "Unrecognized command %#x\n", cmd);
628 break;
629 }
630 }
631
632 if (!s->needed_bytes) {
633 ldebug ("\n");
634 }
635
636 exit:
637 if (!s->needed_bytes) {
638 s->cmd = -1;
639 }
640 else {
641 s->cmd = cmd;
642 }
643 return;
644
645 warn:
646 qemu_log_mask(LOG_UNIMP, "warning: command %#x,%d is not truly understood"
647 " yet\n", cmd, s->needed_bytes);
648 goto exit;
649
650 }
651
652 static uint16_t dsp_get_lohi (SB16State *s)
653 {
654 uint8_t hi = dsp_get_data (s);
655 uint8_t lo = dsp_get_data (s);
656 return (hi << 8) | lo;
657 }
658
659 static uint16_t dsp_get_hilo (SB16State *s)
660 {
661 uint8_t lo = dsp_get_data (s);
662 uint8_t hi = dsp_get_data (s);
663 return (hi << 8) | lo;
664 }
665
666 static void complete (SB16State *s)
667 {
668 int d0, d1, d2;
669 ldebug ("complete command %#x, in_index %d, needed_bytes %d\n",
670 s->cmd, s->in_index, s->needed_bytes);
671
672 if (s->cmd > 0xaf && s->cmd < 0xd0) {
673 d2 = dsp_get_data (s);
674 d1 = dsp_get_data (s);
675 d0 = dsp_get_data (s);
676
677 if (s->cmd & 8) {
678 dolog ("ADC params cmd = %#x d0 = %d, d1 = %d, d2 = %d\n",
679 s->cmd, d0, d1, d2);
680 }
681 else {
682 ldebug ("cmd = %#x d0 = %d, d1 = %d, d2 = %d\n",
683 s->cmd, d0, d1, d2);
684 dma_cmd (s, s->cmd, d0, d1 + (d2 << 8));
685 }
686 }
687 else {
688 switch (s->cmd) {
689 case 0x04:
690 s->csp_mode = dsp_get_data (s);
691 s->csp_reg83r = 0;
692 s->csp_reg83w = 0;
693 ldebug ("CSP command 0x04: mode=%#x\n", s->csp_mode);
694 break;
695
696 case 0x05:
697 s->csp_param = dsp_get_data (s);
698 s->csp_value = dsp_get_data (s);
699 ldebug ("CSP command 0x05: param=%#x value=%#x\n",
700 s->csp_param,
701 s->csp_value);
702 break;
703
704 case 0x0e:
705 d0 = dsp_get_data (s);
706 d1 = dsp_get_data (s);
707 ldebug ("write CSP register %d <- %#x\n", d1, d0);
708 if (d1 == 0x83) {
709 ldebug ("0x83[%d] <- %#x\n", s->csp_reg83r, d0);
710 s->csp_reg83[s->csp_reg83r % 4] = d0;
711 s->csp_reg83r += 1;
712 }
713 else {
714 s->csp_regs[d1] = d0;
715 }
716 break;
717
718 case 0x0f:
719 d0 = dsp_get_data (s);
720 ldebug ("read CSP register %#x -> %#x, mode=%#x\n",
721 d0, s->csp_regs[d0], s->csp_mode);
722 if (d0 == 0x83) {
723 ldebug ("0x83[%d] -> %#x\n",
724 s->csp_reg83w,
725 s->csp_reg83[s->csp_reg83w % 4]);
726 dsp_out_data (s, s->csp_reg83[s->csp_reg83w % 4]);
727 s->csp_reg83w += 1;
728 }
729 else {
730 dsp_out_data (s, s->csp_regs[d0]);
731 }
732 break;
733
734 case 0x10:
735 d0 = dsp_get_data (s);
736 dolog ("cmd 0x10 d0=%#x\n", d0);
737 break;
738
739 case 0x14:
740 dma_cmd8 (s, 0, dsp_get_lohi (s) + 1);
741 break;
742
743 case 0x40:
744 s->time_const = dsp_get_data (s);
745 ldebug ("set time const %d\n", s->time_const);
746 break;
747
748 case 0x41:
749 case 0x42:
750 /*
751 * 0x41 is documented as setting the output sample rate,
752 * and 0x42 the input sample rate, but in fact SB16 hardware
753 * seems to have only a single sample rate under the hood,
754 * and FT2 sets output freq with this (go figure). Compare:
755 * http://homepages.cae.wisc.edu/~brodskye/sb16doc/sb16doc.html#SamplingRate
756 */
757 s->freq = dsp_get_hilo (s);
758 ldebug ("set freq %d\n", s->freq);
759 break;
760
761 case 0x48:
762 s->block_size = dsp_get_lohi (s) + 1;
763 ldebug ("set dma block len %d\n", s->block_size);
764 break;
765
766 case 0x74:
767 case 0x75:
768 case 0x76:
769 case 0x77:
770 /* ADPCM stuff, ignore */
771 break;
772
773 case 0x80:
774 {
775 int freq, samples, bytes;
776 int64_t ticks;
777
778 freq = s->freq > 0 ? s->freq : 11025;
779 samples = dsp_get_lohi (s) + 1;
780 bytes = samples << s->fmt_stereo << (s->fmt_bits == 16);
781 ticks = muldiv64(bytes, NANOSECONDS_PER_SECOND, freq);
782 if (ticks < NANOSECONDS_PER_SECOND / 1024) {
783 qemu_irq_raise (s->pic);
784 }
785 else {
786 if (s->aux_ts) {
787 timer_mod (
788 s->aux_ts,
789 qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + ticks
790 );
791 }
792 }
793 ldebug ("mix silence %d %d %" PRId64 "\n", samples, bytes, ticks);
794 }
795 break;
796
797 case 0xe0:
798 d0 = dsp_get_data (s);
799 s->out_data_len = 0;
800 ldebug ("E0 data = %#x\n", d0);
801 dsp_out_data (s, ~d0);
802 break;
803
804 case 0xe2:
805 #ifdef DEBUG
806 d0 = dsp_get_data (s);
807 dolog ("E2 = %#x\n", d0);
808 #endif
809 break;
810
811 case 0xe4:
812 s->test_reg = dsp_get_data (s);
813 break;
814
815 case 0xf9:
816 d0 = dsp_get_data (s);
817 ldebug ("command 0xf9 with %#x\n", d0);
818 switch (d0) {
819 case 0x0e:
820 dsp_out_data (s, 0xff);
821 break;
822
823 case 0x0f:
824 dsp_out_data (s, 0x07);
825 break;
826
827 case 0x37:
828 dsp_out_data (s, 0x38);
829 break;
830
831 default:
832 dsp_out_data (s, 0x00);
833 break;
834 }
835 break;
836
837 default:
838 qemu_log_mask(LOG_UNIMP, "complete: unrecognized command %#x\n",
839 s->cmd);
840 return;
841 }
842 }
843
844 ldebug ("\n");
845 s->cmd = -1;
846 }
847
848 static void legacy_reset (SB16State *s)
849 {
850 struct audsettings as;
851
852 s->freq = 11025;
853 s->fmt_signed = 0;
854 s->fmt_bits = 8;
855 s->fmt_stereo = 0;
856
857 as.freq = s->freq;
858 as.nchannels = 1;
859 as.fmt = AUDIO_FORMAT_U8;
860 as.endianness = 0;
861
862 s->voice = AUD_open_out (
863 &s->card,
864 s->voice,
865 "sb16",
866 s,
867 SB_audio_callback,
868 &as
869 );
870
871 /* Not sure about that... */
872 /* AUD_set_active_out (s->voice, 1); */
873 }
874
875 static void reset (SB16State *s)
876 {
877 qemu_irq_lower (s->pic);
878 if (s->dma_auto) {
879 qemu_irq_raise (s->pic);
880 qemu_irq_lower (s->pic);
881 }
882
883 s->mixer_regs[0x82] = 0;
884 s->dma_auto = 0;
885 s->in_index = 0;
886 s->out_data_len = 0;
887 s->left_till_irq = 0;
888 s->needed_bytes = 0;
889 s->block_size = -1;
890 s->nzero = 0;
891 s->highspeed = 0;
892 s->v2x6 = 0;
893 s->cmd = -1;
894
895 dsp_out_data (s, 0xaa);
896 speaker (s, 0);
897 control (s, 0);
898 legacy_reset (s);
899 }
900
901 static void dsp_write(void *opaque, uint32_t nport, uint32_t val)
902 {
903 SB16State *s = opaque;
904 int iport;
905
906 iport = nport - s->port;
907
908 ldebug ("write %#x <- %#x\n", nport, val);
909 switch (iport) {
910 case 0x06:
911 switch (val) {
912 case 0x00:
913 if (s->v2x6 == 1) {
914 reset (s);
915 }
916 s->v2x6 = 0;
917 break;
918
919 case 0x01:
920 case 0x03: /* FreeBSD kludge */
921 s->v2x6 = 1;
922 break;
923
924 case 0xc6:
925 s->v2x6 = 0; /* Prince of Persia, csp.sys, diagnose.exe */
926 break;
927
928 case 0xb8: /* Panic */
929 reset (s);
930 break;
931
932 case 0x39:
933 dsp_out_data (s, 0x38);
934 reset (s);
935 s->v2x6 = 0x39;
936 break;
937
938 default:
939 s->v2x6 = val;
940 break;
941 }
942 break;
943
944 case 0x0c: /* write data or command | write status */
945 /* if (s->highspeed) */
946 /* break; */
947
948 if (s->needed_bytes == 0) {
949 command (s, val);
950 #if 0
951 if (0 == s->needed_bytes) {
952 log_dsp (s);
953 }
954 #endif
955 }
956 else {
957 if (s->in_index == sizeof (s->in2_data)) {
958 dolog ("in data overrun\n");
959 }
960 else {
961 s->in2_data[s->in_index++] = val;
962 if (s->in_index == s->needed_bytes) {
963 s->needed_bytes = 0;
964 complete (s);
965 #if 0
966 log_dsp (s);
967 #endif
968 }
969 }
970 }
971 break;
972
973 default:
974 ldebug ("(nport=%#x, val=%#x)\n", nport, val);
975 break;
976 }
977 }
978
979 static uint32_t dsp_read(void *opaque, uint32_t nport)
980 {
981 SB16State *s = opaque;
982 int iport, retval, ack = 0;
983
984 iport = nport - s->port;
985
986 switch (iport) {
987 case 0x06: /* reset */
988 retval = 0xff;
989 break;
990
991 case 0x0a: /* read data */
992 if (s->out_data_len) {
993 retval = s->out_data[--s->out_data_len];
994 s->last_read_byte = retval;
995 }
996 else {
997 if (s->cmd != -1) {
998 dolog ("empty output buffer for command %#x\n",
999 s->cmd);
1000 }
1001 retval = s->last_read_byte;
1002 /* goto error; */
1003 }
1004 break;
1005
1006 case 0x0c: /* 0 can write */
1007 retval = s->can_write ? 0 : 0x80;
1008 break;
1009
1010 case 0x0d: /* timer interrupt clear */
1011 /* dolog ("timer interrupt clear\n"); */
1012 retval = 0;
1013 break;
1014
1015 case 0x0e: /* data available status | irq 8 ack */
1016 retval = (!s->out_data_len || s->highspeed) ? 0 : 0x80;
1017 if (s->mixer_regs[0x82] & 1) {
1018 ack = 1;
1019 s->mixer_regs[0x82] &= ~1;
1020 qemu_irq_lower (s->pic);
1021 }
1022 break;
1023
1024 case 0x0f: /* irq 16 ack */
1025 retval = 0xff;
1026 if (s->mixer_regs[0x82] & 2) {
1027 ack = 1;
1028 s->mixer_regs[0x82] &= ~2;
1029 qemu_irq_lower (s->pic);
1030 }
1031 break;
1032
1033 default:
1034 goto error;
1035 }
1036
1037 if (!ack) {
1038 ldebug ("read %#x -> %#x\n", nport, retval);
1039 }
1040
1041 return retval;
1042
1043 error:
1044 dolog ("warning: dsp_read %#x error\n", nport);
1045 return 0xff;
1046 }
1047
1048 static void reset_mixer (SB16State *s)
1049 {
1050 int i;
1051
1052 memset (s->mixer_regs, 0xff, 0x7f);
1053 memset (s->mixer_regs + 0x83, 0xff, sizeof (s->mixer_regs) - 0x83);
1054
1055 s->mixer_regs[0x02] = 4; /* master volume 3bits */
1056 s->mixer_regs[0x06] = 4; /* MIDI volume 3bits */
1057 s->mixer_regs[0x08] = 0; /* CD volume 3bits */
1058 s->mixer_regs[0x0a] = 0; /* voice volume 2bits */
1059
1060 /* d5=input filt, d3=lowpass filt, d1,d2=input source */
1061 s->mixer_regs[0x0c] = 0;
1062
1063 /* d5=output filt, d1=stereo switch */
1064 s->mixer_regs[0x0e] = 0;
1065
1066 /* voice volume L d5,d7, R d1,d3 */
1067 s->mixer_regs[0x04] = (4 << 5) | (4 << 1);
1068 /* master ... */
1069 s->mixer_regs[0x22] = (4 << 5) | (4 << 1);
1070 /* MIDI ... */
1071 s->mixer_regs[0x26] = (4 << 5) | (4 << 1);
1072
1073 for (i = 0x30; i < 0x48; i++) {
1074 s->mixer_regs[i] = 0x20;
1075 }
1076 }
1077
1078 static void mixer_write_indexb(void *opaque, uint32_t nport, uint32_t val)
1079 {
1080 SB16State *s = opaque;
1081 (void) nport;
1082 s->mixer_nreg = val;
1083 }
1084
1085 static void mixer_write_datab(void *opaque, uint32_t nport, uint32_t val)
1086 {
1087 SB16State *s = opaque;
1088
1089 (void) nport;
1090 ldebug ("mixer_write [%#x] <- %#x\n", s->mixer_nreg, val);
1091
1092 switch (s->mixer_nreg) {
1093 case 0x00:
1094 reset_mixer (s);
1095 break;
1096
1097 case 0x80:
1098 {
1099 int irq = irq_of_magic (val);
1100 ldebug ("setting irq to %d (val=%#x)\n", irq, val);
1101 if (irq > 0) {
1102 s->irq = irq;
1103 }
1104 }
1105 break;
1106
1107 case 0x81:
1108 {
1109 int dma, hdma;
1110
1111 dma = ctz32 (val & 0xf);
1112 hdma = ctz32 (val & 0xf0);
1113 if (dma != s->dma || hdma != s->hdma) {
1114 qemu_log_mask(LOG_GUEST_ERROR, "attempt to change DMA 8bit"
1115 " %d(%d), 16bit %d(%d) (val=%#x)\n", dma, s->dma,
1116 hdma, s->hdma, val);
1117 }
1118 #if 0
1119 s->dma = dma;
1120 s->hdma = hdma;
1121 #endif
1122 }
1123 break;
1124
1125 case 0x82:
1126 qemu_log_mask(LOG_GUEST_ERROR, "attempt to write into IRQ status"
1127 " register (val=%#x)\n", val);
1128 return;
1129
1130 default:
1131 if (s->mixer_nreg >= 0x80) {
1132 ldebug ("attempt to write mixer[%#x] <- %#x\n", s->mixer_nreg, val);
1133 }
1134 break;
1135 }
1136
1137 s->mixer_regs[s->mixer_nreg] = val;
1138 }
1139
1140 static uint32_t mixer_read(void *opaque, uint32_t nport)
1141 {
1142 SB16State *s = opaque;
1143
1144 (void) nport;
1145 #ifndef DEBUG_SB16_MOST
1146 if (s->mixer_nreg != 0x82) {
1147 ldebug ("mixer_read[%#x] -> %#x\n",
1148 s->mixer_nreg, s->mixer_regs[s->mixer_nreg]);
1149 }
1150 #else
1151 ldebug ("mixer_read[%#x] -> %#x\n",
1152 s->mixer_nreg, s->mixer_regs[s->mixer_nreg]);
1153 #endif
1154 return s->mixer_regs[s->mixer_nreg];
1155 }
1156
1157 static int write_audio (SB16State *s, int nchan, int dma_pos,
1158 int dma_len, int len)
1159 {
1160 IsaDma *isa_dma = nchan == s->dma ? s->isa_dma : s->isa_hdma;
1161 IsaDmaClass *k = ISADMA_GET_CLASS(isa_dma);
1162 int temp, net;
1163 uint8_t tmpbuf[4096];
1164
1165 temp = len;
1166 net = 0;
1167
1168 while (temp) {
1169 int left = dma_len - dma_pos;
1170 int copied;
1171 size_t to_copy;
1172
1173 to_copy = MIN (temp, left);
1174 if (to_copy > sizeof (tmpbuf)) {
1175 to_copy = sizeof (tmpbuf);
1176 }
1177
1178 copied = k->read_memory(isa_dma, nchan, tmpbuf, dma_pos, to_copy);
1179 copied = AUD_write (s->voice, tmpbuf, copied);
1180
1181 temp -= copied;
1182 dma_pos = (dma_pos + copied) % dma_len;
1183 net += copied;
1184
1185 if (!copied) {
1186 break;
1187 }
1188 }
1189
1190 return net;
1191 }
1192
1193 static int SB_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len)
1194 {
1195 SB16State *s = opaque;
1196 int till, copy, written, free;
1197
1198 if (s->block_size <= 0) {
1199 qemu_log_mask(LOG_GUEST_ERROR, "invalid block size=%d nchan=%d"
1200 " dma_pos=%d dma_len=%d\n", s->block_size, nchan,
1201 dma_pos, dma_len);
1202 return dma_pos;
1203 }
1204
1205 if (s->left_till_irq < 0) {
1206 s->left_till_irq = s->block_size;
1207 }
1208
1209 if (s->voice) {
1210 free = s->audio_free & ~s->align;
1211 if ((free <= 0) || !dma_len) {
1212 return dma_pos;
1213 }
1214 }
1215 else {
1216 free = dma_len;
1217 }
1218
1219 copy = free;
1220 till = s->left_till_irq;
1221
1222 #ifdef DEBUG_SB16_MOST
1223 dolog ("pos:%06d %d till:%d len:%d\n",
1224 dma_pos, free, till, dma_len);
1225 #endif
1226
1227 if (till <= copy) {
1228 if (s->dma_auto == 0) {
1229 copy = till;
1230 }
1231 }
1232
1233 written = write_audio (s, nchan, dma_pos, dma_len, copy);
1234 dma_pos = (dma_pos + written) % dma_len;
1235 s->left_till_irq -= written;
1236
1237 if (s->left_till_irq <= 0) {
1238 s->mixer_regs[0x82] |= (nchan & 4) ? 2 : 1;
1239 qemu_irq_raise (s->pic);
1240 if (s->dma_auto == 0) {
1241 control (s, 0);
1242 speaker (s, 0);
1243 }
1244 }
1245
1246 #ifdef DEBUG_SB16_MOST
1247 ldebug ("pos %5d free %5d size %5d till % 5d copy %5d written %5d size %5d\n",
1248 dma_pos, free, dma_len, s->left_till_irq, copy, written,
1249 s->block_size);
1250 #endif
1251
1252 while (s->left_till_irq <= 0) {
1253 s->left_till_irq = s->block_size + s->left_till_irq;
1254 }
1255
1256 return dma_pos;
1257 }
1258
1259 static void SB_audio_callback (void *opaque, int free)
1260 {
1261 SB16State *s = opaque;
1262 s->audio_free = free;
1263 }
1264
1265 static int sb16_post_load (void *opaque, int version_id)
1266 {
1267 SB16State *s = opaque;
1268
1269 if (s->voice) {
1270 AUD_close_out (&s->card, s->voice);
1271 s->voice = NULL;
1272 }
1273
1274 if (s->dma_running) {
1275 if (s->freq) {
1276 struct audsettings as;
1277
1278 s->audio_free = 0;
1279
1280 as.freq = s->freq;
1281 as.nchannels = 1 << s->fmt_stereo;
1282 as.fmt = s->fmt;
1283 as.endianness = 0;
1284
1285 s->voice = AUD_open_out (
1286 &s->card,
1287 s->voice,
1288 "sb16",
1289 s,
1290 SB_audio_callback,
1291 &as
1292 );
1293 }
1294
1295 control (s, 1);
1296 speaker (s, s->speaker);
1297 }
1298 return 0;
1299 }
1300
1301 static const VMStateDescription vmstate_sb16 = {
1302 .name = "sb16",
1303 .version_id = 1,
1304 .minimum_version_id = 1,
1305 .post_load = sb16_post_load,
1306 .fields = (VMStateField[]) {
1307 VMSTATE_UINT32 (irq, SB16State),
1308 VMSTATE_UINT32 (dma, SB16State),
1309 VMSTATE_UINT32 (hdma, SB16State),
1310 VMSTATE_UINT32 (port, SB16State),
1311 VMSTATE_UINT32 (ver, SB16State),
1312 VMSTATE_INT32 (in_index, SB16State),
1313 VMSTATE_INT32 (out_data_len, SB16State),
1314 VMSTATE_INT32 (fmt_stereo, SB16State),
1315 VMSTATE_INT32 (fmt_signed, SB16State),
1316 VMSTATE_INT32 (fmt_bits, SB16State),
1317 VMSTATE_UINT32 (fmt, SB16State),
1318 VMSTATE_INT32 (dma_auto, SB16State),
1319 VMSTATE_INT32 (block_size, SB16State),
1320 VMSTATE_INT32 (fifo, SB16State),
1321 VMSTATE_INT32 (freq, SB16State),
1322 VMSTATE_INT32 (time_const, SB16State),
1323 VMSTATE_INT32 (speaker, SB16State),
1324 VMSTATE_INT32 (needed_bytes, SB16State),
1325 VMSTATE_INT32 (cmd, SB16State),
1326 VMSTATE_INT32 (use_hdma, SB16State),
1327 VMSTATE_INT32 (highspeed, SB16State),
1328 VMSTATE_INT32 (can_write, SB16State),
1329 VMSTATE_INT32 (v2x6, SB16State),
1330
1331 VMSTATE_UINT8 (csp_param, SB16State),
1332 VMSTATE_UINT8 (csp_value, SB16State),
1333 VMSTATE_UINT8 (csp_mode, SB16State),
1334 VMSTATE_UINT8 (csp_param, SB16State),
1335 VMSTATE_BUFFER (csp_regs, SB16State),
1336 VMSTATE_UINT8 (csp_index, SB16State),
1337 VMSTATE_BUFFER (csp_reg83, SB16State),
1338 VMSTATE_INT32 (csp_reg83r, SB16State),
1339 VMSTATE_INT32 (csp_reg83w, SB16State),
1340
1341 VMSTATE_BUFFER (in2_data, SB16State),
1342 VMSTATE_BUFFER (out_data, SB16State),
1343 VMSTATE_UINT8 (test_reg, SB16State),
1344 VMSTATE_UINT8 (last_read_byte, SB16State),
1345
1346 VMSTATE_INT32 (nzero, SB16State),
1347 VMSTATE_INT32 (left_till_irq, SB16State),
1348 VMSTATE_INT32 (dma_running, SB16State),
1349 VMSTATE_INT32 (bytes_per_second, SB16State),
1350 VMSTATE_INT32 (align, SB16State),
1351
1352 VMSTATE_INT32 (mixer_nreg, SB16State),
1353 VMSTATE_BUFFER (mixer_regs, SB16State),
1354
1355 VMSTATE_END_OF_LIST ()
1356 }
1357 };
1358
1359 static const MemoryRegionPortio sb16_ioport_list[] = {
1360 { 4, 1, 1, .write = mixer_write_indexb },
1361 { 5, 1, 1, .read = mixer_read, .write = mixer_write_datab },
1362 { 6, 1, 1, .read = dsp_read, .write = dsp_write },
1363 { 10, 1, 1, .read = dsp_read },
1364 { 12, 1, 1, .write = dsp_write },
1365 { 12, 4, 1, .read = dsp_read },
1366 PORTIO_END_OF_LIST (),
1367 };
1368
1369
1370 static void sb16_initfn (Object *obj)
1371 {
1372 SB16State *s = SB16 (obj);
1373
1374 s->cmd = -1;
1375 }
1376
1377 static void sb16_realizefn (DeviceState *dev, Error **errp)
1378 {
1379 ISADevice *isadev = ISA_DEVICE (dev);
1380 SB16State *s = SB16 (dev);
1381 IsaDmaClass *k;
1382
1383 s->isa_hdma = isa_get_dma(isa_bus_from_device(isadev), s->hdma);
1384 s->isa_dma = isa_get_dma(isa_bus_from_device(isadev), s->dma);
1385 if (!s->isa_dma || !s->isa_hdma) {
1386 error_setg(errp, "ISA controller does not support DMA");
1387 return;
1388 }
1389
1390 isa_init_irq (isadev, &s->pic, s->irq);
1391
1392 s->mixer_regs[0x80] = magic_of_irq (s->irq);
1393 s->mixer_regs[0x81] = (1 << s->dma) | (1 << s->hdma);
1394 s->mixer_regs[0x82] = 2 << 5;
1395
1396 s->csp_regs[5] = 1;
1397 s->csp_regs[9] = 0xf8;
1398
1399 reset_mixer (s);
1400 s->aux_ts = timer_new_ns(QEMU_CLOCK_VIRTUAL, aux_timer, s);
1401 if (!s->aux_ts) {
1402 error_setg(errp, "warning: Could not create auxiliary timer");
1403 }
1404
1405 isa_register_portio_list(isadev, &s->portio_list, s->port,
1406 sb16_ioport_list, s, "sb16");
1407
1408 k = ISADMA_GET_CLASS(s->isa_hdma);
1409 k->register_channel(s->isa_hdma, s->hdma, SB_read_DMA, s);
1410
1411 k = ISADMA_GET_CLASS(s->isa_dma);
1412 k->register_channel(s->isa_dma, s->dma, SB_read_DMA, s);
1413
1414 s->can_write = 1;
1415
1416 AUD_register_card ("sb16", &s->card);
1417 }
1418
1419 static Property sb16_properties[] = {
1420 DEFINE_AUDIO_PROPERTIES(SB16State, card),
1421 DEFINE_PROP_UINT32 ("version", SB16State, ver, 0x0405), /* 4.5 */
1422 DEFINE_PROP_UINT32 ("iobase", SB16State, port, 0x220),
1423 DEFINE_PROP_UINT32 ("irq", SB16State, irq, 5),
1424 DEFINE_PROP_UINT32 ("dma", SB16State, dma, 1),
1425 DEFINE_PROP_UINT32 ("dma16", SB16State, hdma, 5),
1426 DEFINE_PROP_END_OF_LIST (),
1427 };
1428
1429 static void sb16_class_initfn (ObjectClass *klass, void *data)
1430 {
1431 DeviceClass *dc = DEVICE_CLASS (klass);
1432
1433 dc->realize = sb16_realizefn;
1434 set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
1435 dc->desc = "Creative Sound Blaster 16";
1436 dc->vmsd = &vmstate_sb16;
1437 device_class_set_props(dc, sb16_properties);
1438 }
1439
1440 static const TypeInfo sb16_info = {
1441 .name = TYPE_SB16,
1442 .parent = TYPE_ISA_DEVICE,
1443 .instance_size = sizeof (SB16State),
1444 .instance_init = sb16_initfn,
1445 .class_init = sb16_class_initfn,
1446 };
1447
1448 static void sb16_register_types (void)
1449 {
1450 type_register_static (&sb16_info);
1451 deprecated_register_soundhw("sb16", "Creative Sound Blaster 16",
1452 1, TYPE_SB16);
1453 }
1454
1455 type_init (sb16_register_types)
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