2 * QEMU Crystal CS4231 audio chip emulation
4 * Copyright (c) 2006 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
26 #include "audio/audio.h"
28 #include "qemu-timer.h"
40 /* #define DEBUG_XLAW */
47 } conf
= {9, 3, 0x534, 1};
50 #define dolog(...) AUD_log ("cs4231a", __VA_ARGS__)
55 #define lwarn(...) AUD_log ("cs4231a", "warning: " __VA_ARGS__)
56 #define lerr(...) AUD_log ("cs4231a", "error: " __VA_ARGS__)
61 typedef struct CSState
{
64 uint32_t regs
[CS_REGS
];
65 uint8_t dregs
[CS_DREGS
];
78 #define IO_READ_PROTO(name) \
79 static uint32_t name (void *opaque, uint32_t addr)
81 #define IO_WRITE_PROTO(name) \
82 static void name (void *opaque, uint32_t addr, uint32_t val)
84 #define GET_SADDR(addr) (addr & 3)
86 #define MODE2 (1 << 6)
107 Left_ADC_Input_Control
,
108 Right_ADC_Input_Control
,
109 Left_AUX1_Input_Control
,
110 Right_AUX1_Input_Control
,
111 Left_AUX2_Input_Control
,
112 Right_AUX2_Input_Control
,
113 Left_DAC_Output_Control
,
114 Right_DAC_Output_Control
,
115 FS_And_Playback_Data_Format
,
116 Interface_Configuration
,
118 Error_Status_And_Initialization
,
121 Playback_Upper_Base_Count
,
122 Playback_Lower_Base_Count
,
123 Alternate_Feature_Enable_I
,
124 Alternate_Feature_Enable_II
,
125 Left_Line_Input_Control
,
126 Right_Line_Input_Control
,
130 Alternate_Feature_Enable_III
,
131 Alternate_Feature_Status
,
133 Mono_Input_And_Output_Control
,
137 Capture_Upper_Base_Count
,
138 Capture_Lower_Base_Count
141 static int freqs
[2][8] = {
142 { 8000, 16000, 27420, 32000, -1, -1, 48000, 9000 },
143 { 5510, 11025, 18900, 22050, 37800, 44100, 33075, 6620 }
146 /* Tables courtesy http://hazelware.luggle.com/tutorials/mulawcompression.html */
147 static int16_t MuLawDecompressTable
[256] =
149 -32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956,
150 -23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764,
151 -15996,-15484,-14972,-14460,-13948,-13436,-12924,-12412,
152 -11900,-11388,-10876,-10364, -9852, -9340, -8828, -8316,
153 -7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
154 -5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
155 -3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
156 -2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
157 -1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
158 -1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
159 -876, -844, -812, -780, -748, -716, -684, -652,
160 -620, -588, -556, -524, -492, -460, -428, -396,
161 -372, -356, -340, -324, -308, -292, -276, -260,
162 -244, -228, -212, -196, -180, -164, -148, -132,
163 -120, -112, -104, -96, -88, -80, -72, -64,
164 -56, -48, -40, -32, -24, -16, -8, 0,
165 32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
166 23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
167 15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
168 11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
169 7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
170 5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
171 3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
172 2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
173 1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
174 1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
175 876, 844, 812, 780, 748, 716, 684, 652,
176 620, 588, 556, 524, 492, 460, 428, 396,
177 372, 356, 340, 324, 308, 292, 276, 260,
178 244, 228, 212, 196, 180, 164, 148, 132,
179 120, 112, 104, 96, 88, 80, 72, 64,
180 56, 48, 40, 32, 24, 16, 8, 0
183 static int16_t ALawDecompressTable
[256] =
185 -5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
186 -7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
187 -2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
188 -3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
189 -22016,-20992,-24064,-23040,-17920,-16896,-19968,-18944,
190 -30208,-29184,-32256,-31232,-26112,-25088,-28160,-27136,
191 -11008,-10496,-12032,-11520,-8960, -8448, -9984, -9472,
192 -15104,-14592,-16128,-15616,-13056,-12544,-14080,-13568,
193 -344, -328, -376, -360, -280, -264, -312, -296,
194 -472, -456, -504, -488, -408, -392, -440, -424,
195 -88, -72, -120, -104, -24, -8, -56, -40,
196 -216, -200, -248, -232, -152, -136, -184, -168,
197 -1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
198 -1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
199 -688, -656, -752, -720, -560, -528, -624, -592,
200 -944, -912, -1008, -976, -816, -784, -880, -848,
201 5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
202 7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
203 2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
204 3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
205 22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
206 30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
207 11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
208 15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
209 344, 328, 376, 360, 280, 264, 312, 296,
210 472, 456, 504, 488, 408, 392, 440, 424,
211 88, 72, 120, 104, 24, 8, 56, 40,
212 216, 200, 248, 232, 152, 136, 184, 168,
213 1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
214 1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
215 688, 656, 752, 720, 560, 528, 624, 592,
216 944, 912, 1008, 976, 816, 784, 880, 848
219 static void cs_reset(void *opaque
)
223 s
->regs
[Index_Address
] = 0x40;
224 s
->regs
[Index_Data
] = 0x00;
225 s
->regs
[Status
] = 0x00;
226 s
->regs
[PIO_Data
] = 0x00;
228 s
->dregs
[Left_ADC_Input_Control
] = 0x00;
229 s
->dregs
[Right_ADC_Input_Control
] = 0x00;
230 s
->dregs
[Left_AUX1_Input_Control
] = 0x88;
231 s
->dregs
[Right_AUX1_Input_Control
] = 0x88;
232 s
->dregs
[Left_AUX2_Input_Control
] = 0x88;
233 s
->dregs
[Right_AUX2_Input_Control
] = 0x88;
234 s
->dregs
[Left_DAC_Output_Control
] = 0x80;
235 s
->dregs
[Right_DAC_Output_Control
] = 0x80;
236 s
->dregs
[FS_And_Playback_Data_Format
] = 0x00;
237 s
->dregs
[Interface_Configuration
] = 0x08;
238 s
->dregs
[Pin_Control
] = 0x00;
239 s
->dregs
[Error_Status_And_Initialization
] = 0x00;
240 s
->dregs
[MODE_And_ID
] = 0x8a;
241 s
->dregs
[Loopback_Control
] = 0x00;
242 s
->dregs
[Playback_Upper_Base_Count
] = 0x00;
243 s
->dregs
[Playback_Lower_Base_Count
] = 0x00;
244 s
->dregs
[Alternate_Feature_Enable_I
] = 0x00;
245 s
->dregs
[Alternate_Feature_Enable_II
] = 0x00;
246 s
->dregs
[Left_Line_Input_Control
] = 0x88;
247 s
->dregs
[Right_Line_Input_Control
] = 0x88;
248 s
->dregs
[Timer_Low_Base
] = 0x00;
249 s
->dregs
[Timer_High_Base
] = 0x00;
250 s
->dregs
[RESERVED
] = 0x00;
251 s
->dregs
[Alternate_Feature_Enable_III
] = 0x00;
252 s
->dregs
[Alternate_Feature_Status
] = 0x00;
253 s
->dregs
[Version_Chip_ID
] = 0xa0;
254 s
->dregs
[Mono_Input_And_Output_Control
] = 0xa0;
255 s
->dregs
[RESERVED_2
] = 0x00;
256 s
->dregs
[Capture_Data_Format
] = 0x00;
257 s
->dregs
[RESERVED_3
] = 0x00;
258 s
->dregs
[Capture_Upper_Base_Count
] = 0x00;
259 s
->dregs
[Capture_Lower_Base_Count
] = 0x00;
262 static void cs_audio_callback (void *opaque
, int free
)
265 s
->audio_free
= free
;
268 static void cs_reset_voices (CSState
*s
, uint32_t val
)
271 struct audsettings as
;
274 if (val
== 0 || val
== 32)
275 val
= (1 << 4) | (1 << 5);
279 as
.freq
= freqs
[xtal
][(val
>> 1) & 7];
282 lerr ("unsupported frequency (val=%#x)\n", val
);
286 as
.nchannels
= (val
& (1 << 4)) ? 2 : 1;
290 switch ((val
>> 5) & ((s
->dregs
[MODE_And_ID
] & MODE2
) ? 7 : 3)) {
293 s
->shift
= as
.nchannels
== 2;
297 s
->tab
= MuLawDecompressTable
;
300 s
->tab
= ALawDecompressTable
;
302 as
.fmt
= AUD_FMT_S16
;
303 as
.endianness
= AUDIO_HOST_ENDIANNESS
;
304 s
->shift
= as
.nchannels
== 2;
310 as
.fmt
= AUD_FMT_S16
;
311 s
->shift
= as
.nchannels
;
316 lerr ("attempt to use reserved format value (%#x)\n", val
);
320 lerr ("ADPCM 4 bit IMA compatible format is not supported\n");
324 s
->voice
= AUD_open_out (
333 if (s
->dregs
[Interface_Configuration
] & PEN
) {
334 if (!s
->dma_running
) {
335 DMA_hold_DREQ (s
->dma
);
336 AUD_set_active_out (s
->voice
, 1);
342 if (s
->dma_running
) {
343 DMA_release_DREQ (s
->dma
);
344 AUD_set_active_out (s
->voice
, 0);
351 if (s
->dma_running
) {
352 DMA_release_DREQ (s
->dma
);
353 AUD_set_active_out (s
->voice
, 0);
357 IO_READ_PROTO (cs_read
)
360 uint32_t saddr
, iaddr
, ret
;
362 saddr
= GET_SADDR (addr
);
367 ret
= s
->regs
[saddr
] & ~0x80;
371 if (!(s
->dregs
[MODE_And_ID
] & MODE2
))
372 iaddr
= s
->regs
[Index_Address
] & 0x0f;
374 iaddr
= s
->regs
[Index_Address
] & 0x1f;
376 ret
= s
->dregs
[iaddr
];
377 if (iaddr
== Error_Status_And_Initialization
) {
378 /* keep SEAL happy */
379 if (s
->aci_counter
) {
387 ret
= s
->regs
[saddr
];
390 dolog ("read %d:%d -> %d\n", saddr
, iaddr
, ret
);
394 IO_WRITE_PROTO (cs_write
)
397 uint32_t saddr
, iaddr
;
399 saddr
= GET_SADDR (addr
);
403 if (!(s
->regs
[Index_Address
] & MCE
) && (val
& MCE
)
404 && (s
->dregs
[Interface_Configuration
] & (3 << 3)))
405 s
->aci_counter
= conf
.aci_counter
;
407 s
->regs
[Index_Address
] = val
& ~(1 << 7);
411 if (!(s
->dregs
[MODE_And_ID
] & MODE2
))
412 iaddr
= s
->regs
[Index_Address
] & 0x0f;
414 iaddr
= s
->regs
[Index_Address
] & 0x1f;
420 lwarn ("attempt to write %#x to reserved indirect register %d\n",
424 case FS_And_Playback_Data_Format
:
425 if (s
->regs
[Index_Address
] & MCE
) {
426 cs_reset_voices (s
, val
);
429 if (s
->dregs
[Alternate_Feature_Status
] & PMCE
) {
430 val
= (val
& ~0x0f) | (s
->dregs
[iaddr
] & 0x0f);
431 cs_reset_voices (s
, val
);
434 lwarn ("[P]MCE(%#x, %#x) is not set, val=%#x\n",
435 s
->regs
[Index_Address
],
436 s
->dregs
[Alternate_Feature_Status
],
441 s
->dregs
[iaddr
] = val
;
444 case Interface_Configuration
:
445 val
&= ~(1 << 5); /* D5 is reserved */
446 s
->dregs
[iaddr
] = val
;
448 lwarn ("PIO is not supported (%#x)\n", val
);
452 if (!s
->dma_running
) {
453 cs_reset_voices (s
, s
->dregs
[FS_And_Playback_Data_Format
]);
457 if (s
->dma_running
) {
458 DMA_release_DREQ (s
->dma
);
459 AUD_set_active_out (s
->voice
, 0);
465 case Error_Status_And_Initialization
:
466 lwarn ("attempt to write to read only register %d\n", iaddr
);
470 dolog ("val=%#x\n", val
);
472 s
->dregs
[iaddr
] |= MODE2
;
474 s
->dregs
[iaddr
] &= ~MODE2
;
477 case Alternate_Feature_Enable_I
:
479 lerr ("timer is not yet supported\n");
480 s
->dregs
[iaddr
] = val
;
483 case Alternate_Feature_Status
:
484 if ((s
->dregs
[iaddr
] & PI
) && !(val
& PI
)) {
486 qemu_irq_lower (s
->pic
[s
->irq
]);
487 s
->regs
[Status
] &= ~INT
;
489 s
->dregs
[iaddr
] = val
;
492 case Version_Chip_ID
:
493 lwarn ("write to Version_Chip_ID register %#x\n", val
);
494 s
->dregs
[iaddr
] = val
;
498 s
->dregs
[iaddr
] = val
;
501 dolog ("written value %#x to indirect register %d\n", val
, iaddr
);
505 if (s
->regs
[Status
] & INT
) {
506 qemu_irq_lower (s
->pic
[s
->irq
]);
508 s
->regs
[Status
] &= ~INT
;
509 s
->dregs
[Alternate_Feature_Status
] &= ~(PI
| CI
| TI
);
513 lwarn ("attempt to write value %#x to PIO register\n", val
);
518 static int cs_write_audio (CSState
*s
, int nchan
, int dma_pos
,
519 int dma_len
, int len
)
522 uint8_t tmpbuf
[4096];
528 int left
= dma_len
- dma_pos
;
532 to_copy
= audio_MIN (temp
, left
);
533 if (to_copy
> sizeof (tmpbuf
)) {
534 to_copy
= sizeof (tmpbuf
);
537 copied
= DMA_read_memory (nchan
, tmpbuf
, dma_pos
, to_copy
);
540 int16_t linbuf
[4096];
542 for (i
= 0; i
< copied
; ++i
)
543 linbuf
[i
] = s
->tab
[tmpbuf
[i
]];
544 copied
= AUD_write (s
->voice
, linbuf
, copied
<< 1);
548 copied
= AUD_write (s
->voice
, tmpbuf
, copied
);
552 dma_pos
= (dma_pos
+ copied
) % dma_len
;
563 static int cs_dma_read (void *opaque
, int nchan
, int dma_pos
, int dma_len
)
569 copy
= s
->voice
? (s
->audio_free
>> (s
->tab
!= NULL
)) : dma_len
;
571 if (s
->dregs
[Pin_Control
] & IEN
) {
572 till
= (s
->dregs
[Playback_Lower_Base_Count
]
573 | (s
->dregs
[Playback_Upper_Base_Count
] << 8)) << s
->shift
;
574 till
-= s
->transferred
;
575 copy
= audio_MIN (till
, copy
);
578 if ((copy
<= 0) || (dma_len
<= 0)) {
582 written
= cs_write_audio (s
, nchan
, dma_pos
, dma_len
, copy
);
584 dma_pos
= (dma_pos
+ written
) % dma_len
;
585 s
->audio_free
-= (written
<< (s
->tab
!= NULL
));
587 if (written
== till
) {
588 s
->regs
[Status
] |= INT
;
589 s
->dregs
[Alternate_Feature_Status
] |= PI
;
591 qemu_irq_raise (s
->pic
[s
->irq
]);
594 s
->transferred
+= written
;
600 static void cs_save(QEMUFile
*f
, void *opaque
)
606 for (i
= 0; i
< CS_REGS
; i
++)
607 qemu_put_be32s(f
, &s
->regs
[i
]);
609 qemu_put_buffer(f
, s
->dregs
, CS_DREGS
);
610 val
= s
->dma_running
; qemu_put_be32s(f
, &val
);
611 val
= s
->audio_free
; qemu_put_be32s(f
, &val
);
612 val
= s
->transferred
; qemu_put_be32s(f
, &val
);
613 val
= s
->aci_counter
; qemu_put_be32s(f
, &val
);
616 static int cs_load(QEMUFile
*f
, void *opaque
, int version_id
)
620 uint32_t val
, dma_running
;
625 for (i
= 0; i
< CS_REGS
; i
++)
626 qemu_get_be32s(f
, &s
->regs
[i
]);
628 qemu_get_buffer(f
, s
->dregs
, CS_DREGS
);
630 qemu_get_be32s(f
, &dma_running
);
631 qemu_get_be32s(f
, &val
); s
->audio_free
= val
;
632 qemu_get_be32s(f
, &val
); s
->transferred
= val
;
633 qemu_get_be32s(f
, &val
); s
->aci_counter
= val
;
634 if (dma_running
&& (s
->dregs
[Interface_Configuration
] & PEN
))
635 cs_reset_voices (s
, s
->dregs
[FS_And_Playback_Data_Format
]);
639 int cs4231a_init (qemu_irq
*pic
)
644 s
= qemu_mallocz (sizeof (*s
));
651 for (i
= 0; i
< 4; i
++) {
652 register_ioport_write (s
->port
+ i
, 1, 1, cs_write
, s
);
653 register_ioport_read (s
->port
+ i
, 1, 1, cs_read
, s
);
656 DMA_register_channel (s
->dma
, cs_dma_read
, s
);
658 register_savevm ("cs4231a", 0, 1, cs_save
, cs_load
, s
);
659 qemu_register_reset (cs_reset
, 0, s
);
662 AUD_register_card ("cs4231a", &s
->card
);