gwj / at91sam9263 · Commits

Commit cc53d26d4dd464bcd22c23892b3f6c6f0b3780a9

Authored by malc
1 parent 214c465f

ISA version of CS4231A 

Hopefully someday will be merged with cs4231.c (SPARC version)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4741 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 6 changed files with 693 additions and 2 deletions
Makefile.target
  View file @cc53d26
... ... @@ -497,6 +497,9 @@ endif
497 497 ifdef CONFIG_GUS
498 498 SOUND_HW += gus.o gusemu_hal.o gusemu_mixer.o
499 499 endif
  500 +ifdef CONFIG_CS4231A
  501 +SOUND_HW += cs4231a.o
  502 +endif
500 503  
501 504 ifdef CONFIG_VNC_TLS
502 505 CPPFLAGS += $(CONFIG_VNC_TLS_CFLAGS)
... ...
configure
  View file @cc53d26
... ... @@ -90,6 +90,7 @@ slirp="yes"
90 90 adlib="no"
91 91 ac97="no"
92 92 gus="no"
  93 +cs4231a="no"
93 94 oss="no"
94 95 dsound="no"
95 96 coreaudio="no"
... ... @@ -288,6 +289,8 @@ for opt do
288 289 ;;
289 290 --enable-gus) gus="yes"
290 291 ;;
  292 + --enable-cs4231a) cs4231a="yes"
  293 + ;;
291 294 --disable-kqemu) kqemu="no"
292 295 ;;
293 296 --disable-brlapi) brlapi="no"
... ... @@ -419,6 +422,7 @@ echo " --enable-mingw32 enable Win32 cross compilation with mingw32"
419 422 echo " --enable-adlib enable Adlib emulation"
420 423 echo " --enable-ac97 enable AC97 emulation"
421 424 echo " --enable-gus enable Gravis Ultrasound emulation"
  425 +echo " --enable-cs4231a enable CS4231A emulation"
422 426 echo " --enable-coreaudio enable Coreaudio audio driver"
423 427 echo " --enable-alsa enable ALSA audio driver"
424 428 echo " --enable-esd enable EsoundD audio driver"
... ... @@ -830,6 +834,7 @@ echo "mingw32 support $mingw32"
830 834 echo "Adlib support $adlib"
831 835 echo "AC97 support $ac97"
832 836 echo "GUS support $gus"
  837 +echo "CS4231A support $cs4231a"
833 838 echo "CoreAudio support $coreaudio"
834 839 echo "ALSA support $alsa"
835 840 echo "EsounD support $esd"
... ... @@ -1038,6 +1043,10 @@ if test "$gus" = "yes" ; then
1038 1043 echo "CONFIG_GUS=yes" >> $config_mak
1039 1044 echo "#define CONFIG_GUS 1" >> $config_h
1040 1045 fi
  1046 +if test "$cs4231a" = "yes" ; then
  1047 + echo "CONFIG_CS4231A=yes" >> $config_mak
  1048 + echo "#define CONFIG_CS4231A 1" >> $config_h
  1049 +fi
1041 1050 if test "$oss" = "yes" ; then
1042 1051 echo "CONFIG_OSS=yes" >> $config_mak
1043 1052 echo "#define CONFIG_OSS 1" >> $config_h
... ...
hw/audiodev.h
  View file @cc53d26
... ... @@ -12,3 +12,6 @@ int GUS_init (AudioState *s, qemu_irq *pic);
12 12  
13 13 /* ac97.c */
14 14 int ac97_init (PCIBus *buf, AudioState *s);
  15 +
  16 +/* cs4231a.c */
  17 +int cs4231a_init (AudioState *s, qemu_irq *pic);
... ...
hw/cs4231a.c 0 → 100644
  View file @cc53d26
  1 +/*
  2 + * QEMU Crystal CS4231 audio chip emulation
  3 + *
  4 + * Copyright (c) 2006 Fabrice Bellard
  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 +#include "hw.h"
  25 +#include "audiodev.h"
  26 +#include "audio/audio.h"
  27 +#include "isa.h"
  28 +#include "qemu-timer.h"
  29 +
  30 +/*
  31 + Missing features:
  32 + ADC
  33 + Loopback
  34 + Timer
  35 + ADPCM
  36 + More...
  37 +*/
  38 +
  39 +/* #define DEBUG */
  40 +#define DEBUG_XLAW
  41 +
  42 +static struct {
  43 + int irq;
  44 + int dma;
  45 + int port;
  46 + int aci_counter;
  47 +} conf = {9, 3, 0x534, 1};
  48 +
  49 +#ifdef DEBUG
  50 +#define dolog(...) AUD_log ("cs4231a", __VA_ARGS__)
  51 +#else
  52 +#define dolog(...)
  53 +#endif
  54 +
  55 +#define lwarn(...) AUD_log ("cs4231a", "warning: " __VA_ARGS__)
  56 +#define lerr(...) AUD_log ("cs4231a", "error: " __VA_ARGS__)
  57 +
  58 +#define CS_REGS 16
  59 +#define CS_DREGS 32
  60 +
  61 +typedef struct CSState {
  62 + QEMUSoundCard card;
  63 + qemu_irq *pic;
  64 + uint32_t regs[CS_REGS];
  65 + uint8_t dregs[CS_DREGS];
  66 + int irq;
  67 + int dma;
  68 + int port;
  69 + int shift;
  70 + int dma_running;
  71 + int audio_free;
  72 + int transferred;
  73 + int aci_counter;
  74 + SWVoiceOut *voice;
  75 + int16_t *tab;
  76 +} CSState;
  77 +
  78 +#define IO_READ_PROTO(name) \
  79 + static uint32_t name (void *opaque, uint32_t addr)
  80 +
  81 +#define IO_WRITE_PROTO(name) \
  82 + static void name (void *opaque, uint32_t addr, uint32_t val)
  83 +
  84 +#define GET_SADDR(addr) (addr & 3)
  85 +
  86 +#define MODE2 (1 << 6)
  87 +#define MCE (1 << 6)
  88 +#define PMCE (1 << 4)
  89 +#define CMCE (1 << 5)
  90 +#define TE (1 << 6)
  91 +#define PEN (1 << 0)
  92 +#define INT (1 << 0)
  93 +#define IEN (1 << 1)
  94 +#define PPIO (1 << 6)
  95 +#define PI (1 << 4)
  96 +#define CI (1 << 5)
  97 +#define TI (1 << 6)
  98 +
  99 +enum {
  100 + Index_Address,
  101 + Index_Data,
  102 + Status,
  103 + PIO_Data
  104 +};
  105 +
  106 +enum {
  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,
  117 + Pin_Control,
  118 + Error_Status_And_Initialization,
  119 + MODE_And_ID,
  120 + Loopback_Control,
  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,
  127 + Timer_Low_Base,
  128 + Timer_High_Base,
  129 + RESERVED,
  130 + Alternate_Feature_Enable_III,
  131 + Alternate_Feature_Status,
  132 + Version_Chip_ID,
  133 + Mono_Input_And_Output_Control,
  134 + RESERVED_2,
  135 + Capture_Data_Format,
  136 + RESERVED_3,
  137 + Capture_Upper_Base_Count,
  138 + Capture_Lower_Base_Count
  139 +};
  140 +
  141 +static int freqs[2][8] = {
  142 + { 8000, 16000, 27420, 32000, -1, -1, 48000, 9000 },
  143 + { 5510, 11025, 18900, 22050, 37800, 44100, 33075, 6620 }
  144 +};
  145 +
  146 +/* Tables courtesy http://hazelware.luggle.com/tutorials/mulawcompression.html */
  147 +static int16_t MuLawDecompressTable[256] =
  148 +{
  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
  181 +};
  182 +
  183 +static int16_t ALawDecompressTable[256] =
  184 +{
  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
  217 +};
  218 +
  219 +static void cs_reset(void *opaque)
  220 +{
  221 + CSState *s = opaque;
  222 +
  223 + s->regs[Index_Address] = 0x40;
  224 + s->regs[Index_Data] = 0x00;
  225 + s->regs[Status] = 0x00;
  226 + s->regs[PIO_Data] = 0x00;
  227 +
  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;
  260 +}
  261 +
  262 +static void cs_audio_callback (void *opaque, int free)
  263 +{
  264 + CSState *s = opaque;
  265 + s->audio_free = free;
  266 +}
  267 +
  268 +static void cs_reset_voices (CSState *s, uint32_t val)
  269 +{
  270 + int xtal;
  271 + audsettings_t as;
  272 +
  273 +#ifdef DEBUG_XLAW
  274 + if (val == 0 || val == 32)
  275 + val = (1 << 4) | (1 << 5);
  276 +#endif
  277 +
  278 + xtal = val & 1;
  279 + as.freq = freqs[xtal][(val >> 1) & 7];
  280 +
  281 + if (as.freq == -1) {
  282 + lerr ("unsupported frequency (val=%#x)\n", val);
  283 + goto error;
  284 + }
  285 +
  286 + as.nchannels = (val & (1 << 4)) ? 2 : 1;
  287 + as.endianness = 0;
  288 + s->tab = NULL;
  289 +
  290 + switch ((val >> 5) & ((s->dregs[MODE_And_ID] & MODE2) ? 7 : 3)) {
  291 + case 0:
  292 + as.fmt = AUD_FMT_U8;
  293 + s->shift = as.nchannels == 2;
  294 + break;
  295 +
  296 + case 1:
  297 + s->tab = MuLawDecompressTable;
  298 + goto x_law;
  299 + case 3:
  300 + s->tab = ALawDecompressTable;
  301 + x_law:
  302 + as.fmt = AUD_FMT_S16;
  303 + as.endianness = AUDIO_HOST_ENDIANNESS;
  304 + s->shift = as.nchannels == 2;
  305 + break;
  306 +
  307 + case 6:
  308 + as.endianness = 1;
  309 + case 2:
  310 + as.fmt = AUD_FMT_S16;
  311 + s->shift = as.nchannels;
  312 + break;
  313 +
  314 + case 7:
  315 + case 4:
  316 + lerr ("attempt to use reserved format value (%#x)\n", val);
  317 + goto error;
  318 +
  319 + case 5:
  320 + lerr ("ADPCM 4 bit IMA compatible format is not supported\n");
  321 + goto error;
  322 + }
  323 +
  324 + s->voice = AUD_open_out (
  325 + &s->card,
  326 + s->voice,
  327 + "cs4231a",
  328 + s,
  329 + cs_audio_callback,
  330 + &as
  331 + );
  332 +
  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);
  337 + s->transferred = 0;
  338 + }
  339 + s->dma_running = 1;
  340 + }
  341 + else {
  342 + if (s->dma_running) {
  343 + DMA_release_DREQ (s->dma);
  344 + AUD_set_active_out (s->voice, 0);
  345 + }
  346 + s->dma_running = 0;
  347 + }
  348 + return;
  349 +
  350 + error:
  351 + if (s->dma_running) {
  352 + DMA_release_DREQ (s->dma);
  353 + AUD_set_active_out (s->voice, 0);
  354 + }
  355 +}
  356 +
  357 +IO_READ_PROTO (cs_read)
  358 +{
  359 + CSState *s = opaque;
  360 + uint32_t saddr, iaddr, ret;
  361 +
  362 + saddr = GET_SADDR (addr);
  363 + iaddr = ~0U;
  364 +
  365 + switch (saddr) {
  366 + case Index_Address:
  367 + ret = s->regs[saddr] & ~0x80;
  368 + break;
  369 +
  370 + case Index_Data:
  371 + if (!(s->dregs[MODE_And_ID] & MODE2))
  372 + iaddr = s->regs[Index_Address] & 0x0f;
  373 + else
  374 + iaddr = s->regs[Index_Address] & 0x1f;
  375 +
  376 + ret = s->dregs[iaddr];
  377 + if (iaddr == Error_Status_And_Initialization) {
  378 + /* keep SEAL happy */
  379 + if (s->aci_counter) {
  380 + ret |= 1 << 5;
  381 + s->aci_counter -= 1;
  382 + }
  383 + }
  384 + break;
  385 +
  386 + default:
  387 + ret = s->regs[saddr];
  388 + break;
  389 + }
  390 + dolog ("read %d:%d -> %d\n", saddr, iaddr, ret);
  391 + return ret;
  392 +}
  393 +
  394 +IO_WRITE_PROTO (cs_write)
  395 +{
  396 + CSState *s = opaque;
  397 + uint32_t saddr, iaddr;
  398 +
  399 + saddr = GET_SADDR (addr);
  400 +
  401 + switch (saddr) {
  402 + case Index_Address:
  403 + if (!(s->regs[Index_Address] & MCE) && (val & MCE)
  404 + && (s->dregs[Interface_Configuration] & (3 << 3)))
  405 + s->aci_counter = conf.aci_counter;
  406 +
  407 + s->regs[Index_Address] = val & ~(1 << 7);
  408 + break;
  409 +
  410 + case Index_Data:
  411 + if (!(s->dregs[MODE_And_ID] & MODE2))
  412 + iaddr = s->regs[Index_Address] & 0x0f;
  413 + else
  414 + iaddr = s->regs[Index_Address] & 0x1f;
  415 +
  416 + switch (iaddr) {
  417 + case RESERVED:
  418 + case RESERVED_2:
  419 + case RESERVED_3:
  420 + lwarn ("attempt to write %#x to reserved indirect register %d\n",
  421 + val, iaddr);
  422 + break;
  423 +
  424 + case FS_And_Playback_Data_Format:
  425 + if (s->regs[Index_Address] & MCE) {
  426 + cs_reset_voices (s, val);
  427 + }
  428 + else {
  429 + if (s->dregs[Alternate_Feature_Status] & PMCE) {
  430 + val = (val & ~0x0f) | (s->dregs[iaddr] & 0x0f);
  431 + cs_reset_voices (s, val);
  432 + }
  433 + else {
  434 + lwarn ("[P]MCE(%#x, %#x) is not set, val=%#x\n",
  435 + s->regs[Index_Address],
  436 + s->dregs[Alternate_Feature_Status],
  437 + val);
  438 + break;
  439 + }
  440 + }
  441 + s->dregs[iaddr] = val;
  442 + break;
  443 +
  444 + case Interface_Configuration:
  445 + val &= ~(1 << 5); /* D5 is reserved */
  446 + s->dregs[iaddr] = val;
  447 + if (val & PPIO) {
  448 + lwarn ("PIO is not supported (%#x)\n", val);
  449 + break;
  450 + }
  451 + if (val & PEN) {
  452 + if (!s->dma_running) {
  453 + cs_reset_voices (s, s->dregs[FS_And_Playback_Data_Format]);
  454 + }
  455 + }
  456 + else {
  457 + if (s->dma_running) {
  458 + DMA_release_DREQ (s->dma);
  459 + AUD_set_active_out (s->voice, 0);
  460 + s->dma_running = 0;
  461 + }
  462 + }
  463 + break;
  464 +
  465 + case Error_Status_And_Initialization:
  466 + lwarn ("attempt to write to read only register %d\n", iaddr);
  467 + break;
  468 +
  469 + case MODE_And_ID:
  470 + dolog ("val=%#x\n", val);
  471 + if (val & MODE2)
  472 + s->dregs[iaddr] |= MODE2;
  473 + else
  474 + s->dregs[iaddr] &= ~MODE2;
  475 + break;
  476 +
  477 + case Alternate_Feature_Enable_I:
  478 + if (val & TE)
  479 + lerr ("timer is not yet supported\n");
  480 + s->dregs[iaddr] = val;
  481 + break;
  482 +
  483 + case Alternate_Feature_Status:
  484 + if ((s->dregs[iaddr] & PI) && !(val & PI)) {
  485 + /* XXX: TI CI */
  486 + qemu_irq_lower (s->pic[s->irq]);
  487 + s->regs[Status] &= ~INT;
  488 + }
  489 + s->dregs[iaddr] = val;
  490 + break;
  491 +
  492 + case Version_Chip_ID:
  493 + lwarn ("write to Version_Chip_ID register %#x\n", val);
  494 + s->dregs[iaddr] = val;
  495 + break;
  496 +
  497 + default:
  498 + s->dregs[iaddr] = val;
  499 + break;
  500 + }
  501 + dolog ("written value %#x to indirect register %d\n", val, iaddr);
  502 + break;
  503 +
  504 + case Status:
  505 + if (s->regs[Status] & INT) {
  506 + qemu_irq_lower (s->pic[s->irq]);
  507 + }
  508 + s->regs[Status] &= ~INT;
  509 + s->dregs[Alternate_Feature_Status] &= ~(PI | CI | TI);
  510 + break;
  511 +
  512 + case PIO_Data:
  513 + lwarn ("attempt to write value %#x to PIO register\n", val);
  514 + break;
  515 + }
  516 +}
  517 +
  518 +static int cs_write_audio (CSState *s, int nchan, int dma_pos,
  519 + int dma_len, int len)
  520 +{
  521 + int temp, net;
  522 + uint8_t tmpbuf[4096];
  523 +
  524 + temp = len;
  525 + net = 0;
  526 +
  527 + while (temp) {
  528 + int left = dma_len - dma_pos;
  529 + int copied;
  530 + size_t to_copy;
  531 +
  532 + to_copy = audio_MIN (temp, left);
  533 + if (to_copy > sizeof (tmpbuf)) {
  534 + to_copy = sizeof (tmpbuf);
  535 + }
  536 +
  537 + copied = DMA_read_memory (nchan, tmpbuf, dma_pos, to_copy);
  538 + if (s->tab) {
  539 + int i;
  540 + int16_t linbuf[4096];
  541 +
  542 + for (i = 0; i < copied; ++i)
  543 + linbuf[i] = s->tab[tmpbuf[i]];
  544 + copied = AUD_write (s->voice, linbuf, copied << 1);
  545 + copied >>= 1;
  546 + }
  547 + else {
  548 + copied = AUD_write (s->voice, tmpbuf, copied);
  549 + }
  550 +
  551 + temp -= copied;
  552 + dma_pos = (dma_pos + copied) % dma_len;
  553 + net += copied;
  554 +
  555 + if (!copied) {
  556 + break;
  557 + }
  558 + }
  559 +
  560 + return net;
  561 +}
  562 +
  563 +static int cs_dma_read (void *opaque, int nchan, int dma_pos, int dma_len)
  564 +{
  565 + CSState *s = opaque;
  566 + int copy, written;
  567 + int till = -1;
  568 +
  569 + copy = s->voice ? (s->audio_free >> (s->tab != NULL)) : dma_len;
  570 +
  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);
  576 + }
  577 +
  578 + if ((copy <= 0) || (dma_len <= 0)) {
  579 + return dma_pos;
  580 + }
  581 +
  582 + written = cs_write_audio (s, nchan, dma_pos, dma_len, copy);
  583 +
  584 + dma_pos = (dma_pos + written) % dma_len;
  585 + s->audio_free -= (written << (s->tab != NULL));
  586 +
  587 + if (written == till) {
  588 + s->regs[Status] |= INT;
  589 + s->dregs[Alternate_Feature_Status] |= PI;
  590 + s->transferred = 0;
  591 + qemu_irq_raise (s->pic[s->irq]);
  592 + }
  593 + else {
  594 + s->transferred += written;
  595 + }
  596 +
  597 + return dma_pos;
  598 +}
  599 +
  600 +static void cs_save(QEMUFile *f, void *opaque)
  601 +{
  602 + CSState *s = opaque;
  603 + unsigned int i;
  604 +
  605 + for (i = 0; i < CS_REGS; i++)
  606 + qemu_put_be32s(f, &s->regs[i]);
  607 +
  608 + qemu_put_buffer(f, s->dregs, CS_DREGS);
  609 +}
  610 +
  611 +static int cs_load(QEMUFile *f, void *opaque, int version_id)
  612 +{
  613 + CSState *s = opaque;
  614 + unsigned int i;
  615 +
  616 + if (version_id > 1)
  617 + return -EINVAL;
  618 +
  619 + for (i = 0; i < CS_REGS; i++)
  620 + qemu_get_be32s(f, &s->regs[i]);
  621 +
  622 + qemu_get_buffer(f, s->dregs, CS_DREGS);
  623 + return 0;
  624 +}
  625 +
  626 +int cs4231a_init (AudioState *audio, qemu_irq *pic)
  627 +{
  628 + int i;
  629 + CSState *s;
  630 +
  631 + if (!audio) {
  632 + lerr ("No audio state\n");
  633 + return -1;
  634 + }
  635 +
  636 + s = qemu_mallocz (sizeof (*s));
  637 + if (!s) {
  638 + lerr ("Could not allocate memory for cs4231a (%zu bytes)\n",
  639 + sizeof (*s));
  640 + return -1;
  641 + }
  642 +
  643 + s->pic = pic;
  644 + s->irq = conf.irq;
  645 + s->dma = conf.dma;
  646 + s->port = conf.port;
  647 +
  648 + for (i = 0; i < 4; i++) {
  649 + register_ioport_write (s->port + i, 1, 1, cs_write, s);
  650 + register_ioport_read (s->port + i, 1, 1, cs_read, s);
  651 + }
  652 +
  653 + DMA_register_channel (s->dma, cs_dma_read, s);
  654 +
  655 + register_savevm ("cs4231a", 0, 1, cs_save, cs_load, s);
  656 + qemu_register_reset (cs_reset, s);
  657 + cs_reset (s);
  658 +
  659 + AUD_register_card (audio,"cs4231a", &s->card);
  660 + return 0;
  661 +}
... ...
qemu-doc.texi
  View file @cc53d26
... ... @@ -175,13 +175,16 @@ Adlib(OPL2) - Yamaha YM3812 compatible chip
175 175 @item
176 176 Gravis Ultrasound GF1 sound card
177 177 @item
  178 +CS4231A compatible sound card
  179 +@item
178 180 PCI UHCI USB controller and a virtual USB hub.
179 181 @end itemize
180 182  
181 183 SMP is supported with up to 255 CPUs.
182 184  
183   -Note that adlib, ac97 and gus are only available when QEMU was configured
184   -with --enable-adlib, --enable-ac97 or --enable-gus respectively.
  185 +Note that adlib, ac97, gus and cs4231a are only available when QEMU
  186 +was configured with --enable-adlib, --enable-ac97, --enable-gus or
  187 +--enable-cs4231a respectively.
185 188  
186 189 QEMU uses the PC BIOS from the Bochs project and the Plex86/Bochs LGPL
187 190 VGA BIOS.
... ... @@ -191,6 +194,8 @@ QEMU uses YM3812 emulation by Tatsuyuki Satoh.
191 194 QEMU uses GUS emulation(GUSEMU32 @url{http://www.deinmeister.de/gusemu/})
192 195 by Tibor "TS" Schütz.
193 196  
  197 +CS4231A is the chip used in Windows Sound System and GUSMAX products
  198 +
194 199 @c man end
195 200  
196 201 @node pcsys_quickstart
... ...
... ... @@ -7552,6 +7552,16 @@ struct soundhw soundhw[] = {
7552 7552 { .init_isa = SB16_init }
7553 7553 },
7554 7554  
  7555 +#ifdef CONFIG_CS4231A
  7556 + {
  7557 + "cs4231a",
  7558 + "CS4231A",
  7559 + 0,
  7560 + 1,
  7561 + { .init_isa = cs4231a_init }
  7562 + },
  7563 +#endif
  7564 +
7555 7565 #ifdef CONFIG_ADLIB
7556 7566 {
7557 7567 "adlib",
... ...