| 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 | |
| 25 | #include "qemu/osdep.h" |
| 26 | #include "hw/audio/model.h" |
| 27 | #include "qemu/audio.h" |
| 28 | #include "hw/core/irq.h" |
| 29 | #include "hw/isa/isa.h" |
| 30 | #include "hw/core/qdev-properties.h" |
| 31 | #include "migration/vmstate.h" |
| 32 | #include "qemu/module.h" |
| 33 | #include "qemu/error-report.h" |
| 34 | #include "qapi/error.h" |
| 35 | #include "qom/object.h" |
| 36 | |
| 37 | /* |
| 38 | Missing features: |
| 39 | ADC |
| 40 | Loopback |
| 41 | Timer |
| 42 | ADPCM |
| 43 | More... |
| 44 | */ |
| 45 | |
| 46 | #define DEBUG 0 |
| 47 | /* #define DEBUG_XLAW */ |
| 48 | |
| 49 | static struct { |
| 50 | int aci_counter; |
| 51 | } conf = {1}; |
| 52 | |
| 53 | #define dolog(fmt, ...) do { \ |
| 54 | if (DEBUG) { \ |
| 55 | error_report("cs4231a: " fmt, ##__VA_ARGS__); \ |
| 56 | } \ |
| 57 | } while (0) |
| 58 | |
| 59 | #define lwarn(fmt, ...) warn_report("cs4231a: " fmt, ##__VA_ARGS__) |
| 60 | #define lerr(fmt, ...) error_report("cs4231a: " fmt, ##__VA_ARGS__) |
| 61 | |
| 62 | #define CS_REGS 16 |
| 63 | #define CS_DREGS 32 |
| 64 | |
| 65 | #define TYPE_CS4231A "cs4231a" |
| 66 | typedef struct CSState CSState; |
| 67 | DECLARE_INSTANCE_CHECKER(CSState, CS4231A, |
| 68 | TYPE_CS4231A) |
| 69 | |
| 70 | struct CSState { |
| 71 | ISADevice dev; |
| 72 | AudioBackend *audio_be; |
| 73 | MemoryRegion ioports; |
| 74 | qemu_irq pic; |
| 75 | uint32_t regs[CS_REGS]; |
| 76 | uint8_t dregs[CS_DREGS]; |
| 77 | uint32_t irq; |
| 78 | uint32_t dma; |
| 79 | uint32_t port; |
| 80 | IsaDma *isa_dma; |
| 81 | int shift; |
| 82 | int dma_running; |
| 83 | int audio_free; |
| 84 | int transferred; |
| 85 | int aci_counter; |
| 86 | SWVoiceOut *voice; |
| 87 | const int16_t *tab; |
| 88 | }; |
| 89 | |
| 90 | #define MODE2 (1 << 6) |
| 91 | #define MCE (1 << 6) |
| 92 | #define PMCE (1 << 4) |
| 93 | #define CMCE (1 << 5) |
| 94 | #define TE (1 << 6) |
| 95 | #define PEN (1 << 0) |
| 96 | #define INT (1 << 0) |
| 97 | #define IEN (1 << 1) |
| 98 | #define PPIO (1 << 6) |
| 99 | #define PI (1 << 4) |
| 100 | #define CI (1 << 5) |
| 101 | #define TI (1 << 6) |
| 102 | |
| 103 | enum { |
| 104 | Index_Address, |
| 105 | Index_Data, |
| 106 | Status, |
| 107 | PIO_Data |
| 108 | }; |
| 109 | |
| 110 | enum { |
| 111 | Left_ADC_Input_Control, |
| 112 | Right_ADC_Input_Control, |
| 113 | Left_AUX1_Input_Control, |
| 114 | Right_AUX1_Input_Control, |
| 115 | Left_AUX2_Input_Control, |
| 116 | Right_AUX2_Input_Control, |
| 117 | Left_DAC_Output_Control, |
| 118 | Right_DAC_Output_Control, |
| 119 | FS_And_Playback_Data_Format, |
| 120 | Interface_Configuration, |
| 121 | Pin_Control, |
| 122 | Error_Status_And_Initialization, |
| 123 | MODE_And_ID, |
| 124 | Loopback_Control, |
| 125 | Playback_Upper_Base_Count, |
| 126 | Playback_Lower_Base_Count, |
| 127 | Alternate_Feature_Enable_I, |
| 128 | Alternate_Feature_Enable_II, |
| 129 | Left_Line_Input_Control, |
| 130 | Right_Line_Input_Control, |
| 131 | Timer_Low_Base, |
| 132 | Timer_High_Base, |
| 133 | RESERVED, |
| 134 | Alternate_Feature_Enable_III, |
| 135 | Alternate_Feature_Status, |
| 136 | Version_Chip_ID, |
| 137 | Mono_Input_And_Output_Control, |
| 138 | RESERVED_2, |
| 139 | Capture_Data_Format, |
| 140 | RESERVED_3, |
| 141 | Capture_Upper_Base_Count, |
| 142 | Capture_Lower_Base_Count |
| 143 | }; |
| 144 | |
| 145 | static const int freqs[2][8] = { |
| 146 | { 8000, 16000, 27420, 32000, -1, -1, 48000, 9000 }, |
| 147 | { 5510, 11025, 18900, 22050, 37800, 44100, 33075, 6620 } |
| 148 | }; |
| 149 | |
| 150 | /* Tables courtesy http://hazelware.luggle.com/tutorials/mulawcompression.html */ |
| 151 | static const int16_t MuLawDecompressTable[256] = |
| 152 | { |
| 153 | -32124,-31100,-30076,-29052,-28028,-27004,-25980,-24956, |
| 154 | -23932,-22908,-21884,-20860,-19836,-18812,-17788,-16764, |
| 155 | -15996,-15484,-14972,-14460,-13948,-13436,-12924,-12412, |
| 156 | -11900,-11388,-10876,-10364, -9852, -9340, -8828, -8316, |
| 157 | -7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140, |
| 158 | -5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092, |
| 159 | -3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004, |
| 160 | -2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980, |
| 161 | -1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436, |
| 162 | -1372, -1308, -1244, -1180, -1116, -1052, -988, -924, |
| 163 | -876, -844, -812, -780, -748, -716, -684, -652, |
| 164 | -620, -588, -556, -524, -492, -460, -428, -396, |
| 165 | -372, -356, -340, -324, -308, -292, -276, -260, |
| 166 | -244, -228, -212, -196, -180, -164, -148, -132, |
| 167 | -120, -112, -104, -96, -88, -80, -72, -64, |
| 168 | -56, -48, -40, -32, -24, -16, -8, 0, |
| 169 | 32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956, |
| 170 | 23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764, |
| 171 | 15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412, |
| 172 | 11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316, |
| 173 | 7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140, |
| 174 | 5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092, |
| 175 | 3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004, |
| 176 | 2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980, |
| 177 | 1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436, |
| 178 | 1372, 1308, 1244, 1180, 1116, 1052, 988, 924, |
| 179 | 876, 844, 812, 780, 748, 716, 684, 652, |
| 180 | 620, 588, 556, 524, 492, 460, 428, 396, |
| 181 | 372, 356, 340, 324, 308, 292, 276, 260, |
| 182 | 244, 228, 212, 196, 180, 164, 148, 132, |
| 183 | 120, 112, 104, 96, 88, 80, 72, 64, |
| 184 | 56, 48, 40, 32, 24, 16, 8, 0 |
| 185 | }; |
| 186 | |
| 187 | static const int16_t ALawDecompressTable[256] = |
| 188 | { |
| 189 | -5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736, |
| 190 | -7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784, |
| 191 | -2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368, |
| 192 | -3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392, |
| 193 | -22016,-20992,-24064,-23040,-17920,-16896,-19968,-18944, |
| 194 | -30208,-29184,-32256,-31232,-26112,-25088,-28160,-27136, |
| 195 | -11008,-10496,-12032,-11520,-8960, -8448, -9984, -9472, |
| 196 | -15104,-14592,-16128,-15616,-13056,-12544,-14080,-13568, |
| 197 | -344, -328, -376, -360, -280, -264, -312, -296, |
| 198 | -472, -456, -504, -488, -408, -392, -440, -424, |
| 199 | -88, -72, -120, -104, -24, -8, -56, -40, |
| 200 | -216, -200, -248, -232, -152, -136, -184, -168, |
| 201 | -1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184, |
| 202 | -1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696, |
| 203 | -688, -656, -752, -720, -560, -528, -624, -592, |
| 204 | -944, -912, -1008, -976, -816, -784, -880, -848, |
| 205 | 5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736, |
| 206 | 7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784, |
| 207 | 2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368, |
| 208 | 3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392, |
| 209 | 22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944, |
| 210 | 30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136, |
| 211 | 11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472, |
| 212 | 15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568, |
| 213 | 344, 328, 376, 360, 280, 264, 312, 296, |
| 214 | 472, 456, 504, 488, 408, 392, 440, 424, |
| 215 | 88, 72, 120, 104, 24, 8, 56, 40, |
| 216 | 216, 200, 248, 232, 152, 136, 184, 168, |
| 217 | 1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184, |
| 218 | 1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696, |
| 219 | 688, 656, 752, 720, 560, 528, 624, 592, |
| 220 | 944, 912, 1008, 976, 816, 784, 880, 848 |
| 221 | }; |
| 222 | |
| 223 | static void cs4231a_reset (DeviceState *dev) |
| 224 | { |
| 225 | CSState *s = CS4231A (dev); |
| 226 | |
| 227 | s->regs[Index_Address] = 0x40; |
| 228 | s->regs[Index_Data] = 0x00; |
| 229 | s->regs[Status] = 0x00; |
| 230 | s->regs[PIO_Data] = 0x00; |
| 231 | |
| 232 | s->dregs[Left_ADC_Input_Control] = 0x00; |
| 233 | s->dregs[Right_ADC_Input_Control] = 0x00; |
| 234 | s->dregs[Left_AUX1_Input_Control] = 0x88; |
| 235 | s->dregs[Right_AUX1_Input_Control] = 0x88; |
| 236 | s->dregs[Left_AUX2_Input_Control] = 0x88; |
| 237 | s->dregs[Right_AUX2_Input_Control] = 0x88; |
| 238 | s->dregs[Left_DAC_Output_Control] = 0x80; |
| 239 | s->dregs[Right_DAC_Output_Control] = 0x80; |
| 240 | s->dregs[FS_And_Playback_Data_Format] = 0x00; |
| 241 | s->dregs[Interface_Configuration] = 0x08; |
| 242 | s->dregs[Pin_Control] = 0x00; |
| 243 | s->dregs[Error_Status_And_Initialization] = 0x00; |
| 244 | s->dregs[MODE_And_ID] = 0x8a; |
| 245 | s->dregs[Loopback_Control] = 0x00; |
| 246 | s->dregs[Playback_Upper_Base_Count] = 0x00; |
| 247 | s->dregs[Playback_Lower_Base_Count] = 0x00; |
| 248 | s->dregs[Alternate_Feature_Enable_I] = 0x00; |
| 249 | s->dregs[Alternate_Feature_Enable_II] = 0x00; |
| 250 | s->dregs[Left_Line_Input_Control] = 0x88; |
| 251 | s->dregs[Right_Line_Input_Control] = 0x88; |
| 252 | s->dregs[Timer_Low_Base] = 0x00; |
| 253 | s->dregs[Timer_High_Base] = 0x00; |
| 254 | s->dregs[RESERVED] = 0x00; |
| 255 | s->dregs[Alternate_Feature_Enable_III] = 0x00; |
| 256 | s->dregs[Alternate_Feature_Status] = 0x00; |
| 257 | s->dregs[Version_Chip_ID] = 0xa0; |
| 258 | s->dregs[Mono_Input_And_Output_Control] = 0xa0; |
| 259 | s->dregs[RESERVED_2] = 0x00; |
| 260 | s->dregs[Capture_Data_Format] = 0x00; |
| 261 | s->dregs[RESERVED_3] = 0x00; |
| 262 | s->dregs[Capture_Upper_Base_Count] = 0x00; |
| 263 | s->dregs[Capture_Lower_Base_Count] = 0x00; |
| 264 | } |
| 265 | |
| 266 | static void cs_audio_callback (void *opaque, int free) |
| 267 | { |
| 268 | CSState *s = opaque; |
| 269 | s->audio_free = free; |
| 270 | } |
| 271 | |
| 272 | static void cs_reset_voices (CSState *s, uint32_t val) |
| 273 | { |
| 274 | int xtal; |
| 275 | struct audsettings as; |
| 276 | IsaDmaClass *k = ISADMA_GET_CLASS(s->isa_dma); |
| 277 | |
| 278 | #ifdef DEBUG_XLAW |
| 279 | if (val == 0 || val == 32) |
| 280 | val = (1 << 4) | (1 << 5); |
| 281 | #endif |
| 282 | |
| 283 | xtal = val & 1; |
| 284 | as.freq = freqs[xtal][(val >> 1) & 7]; |
| 285 | |
| 286 | if (as.freq == -1) { |
| 287 | lerr("unsupported frequency (val=0x%x)", val); |
| 288 | goto error; |
| 289 | } |
| 290 | |
| 291 | as.nchannels = (val & (1 << 4)) ? 2 : 1; |
| 292 | as.big_endian = false; |
| 293 | s->tab = NULL; |
| 294 | |
| 295 | switch ((val >> 5) & ((s->dregs[MODE_And_ID] & MODE2) ? 7 : 3)) { |
| 296 | case 0: |
| 297 | as.fmt = AUDIO_FORMAT_U8; |
| 298 | s->shift = as.nchannels == 2; |
| 299 | break; |
| 300 | |
| 301 | case 1: |
| 302 | s->tab = MuLawDecompressTable; |
| 303 | goto x_law; |
| 304 | case 3: |
| 305 | s->tab = ALawDecompressTable; |
| 306 | x_law: |
| 307 | as.fmt = AUDIO_FORMAT_S16; |
| 308 | as.big_endian = HOST_BIG_ENDIAN; |
| 309 | s->shift = as.nchannels == 2; |
| 310 | break; |
| 311 | |
| 312 | case 6: |
| 313 | as.big_endian = true; |
| 314 | /* fall through */ |
| 315 | case 2: |
| 316 | as.fmt = AUDIO_FORMAT_S16; |
| 317 | s->shift = as.nchannels; |
| 318 | break; |
| 319 | |
| 320 | case 7: |
| 321 | case 4: |
| 322 | lerr("attempt to use reserved format value (0x%x)", val); |
| 323 | goto error; |
| 324 | |
| 325 | case 5: |
| 326 | lerr("ADPCM 4 bit IMA compatible format is not supported"); |
| 327 | goto error; |
| 328 | } |
| 329 | |
| 330 | s->voice = audio_be_open_out( |
| 331 | s->audio_be, |
| 332 | s->voice, |
| 333 | "cs4231a", |
| 334 | s, |
| 335 | cs_audio_callback, |
| 336 | &as |
| 337 | ); |
| 338 | |
| 339 | if (s->dregs[Interface_Configuration] & PEN) { |
| 340 | if (!s->dma_running) { |
| 341 | k->hold_DREQ(s->isa_dma, s->dma); |
| 342 | audio_be_set_active_out(s->audio_be, s->voice, 1); |
| 343 | s->transferred = 0; |
| 344 | } |
| 345 | s->dma_running = 1; |
| 346 | } |
| 347 | else { |
| 348 | if (s->dma_running) { |
| 349 | k->release_DREQ(s->isa_dma, s->dma); |
| 350 | audio_be_set_active_out(s->audio_be, s->voice, 0); |
| 351 | } |
| 352 | s->dma_running = 0; |
| 353 | } |
| 354 | return; |
| 355 | |
| 356 | error: |
| 357 | if (s->dma_running) { |
| 358 | k->release_DREQ(s->isa_dma, s->dma); |
| 359 | audio_be_set_active_out(s->audio_be, s->voice, 0); |
| 360 | } |
| 361 | } |
| 362 | |
| 363 | static uint64_t cs_read (void *opaque, hwaddr addr, unsigned size) |
| 364 | { |
| 365 | CSState *s = opaque; |
| 366 | uint32_t saddr, iaddr, ret; |
| 367 | |
| 368 | saddr = addr; |
| 369 | iaddr = ~0U; |
| 370 | |
| 371 | switch (saddr) { |
| 372 | case Index_Address: |
| 373 | ret = s->regs[saddr] & ~0x80; |
| 374 | break; |
| 375 | |
| 376 | case Index_Data: |
| 377 | if (!(s->dregs[MODE_And_ID] & MODE2)) |
| 378 | iaddr = s->regs[Index_Address] & 0x0f; |
| 379 | else |
| 380 | iaddr = s->regs[Index_Address] & 0x1f; |
| 381 | |
| 382 | ret = s->dregs[iaddr]; |
| 383 | if (iaddr == Error_Status_And_Initialization) { |
| 384 | /* keep SEAL happy */ |
| 385 | if (s->aci_counter) { |
| 386 | ret |= 1 << 5; |
| 387 | s->aci_counter -= 1; |
| 388 | } |
| 389 | } |
| 390 | break; |
| 391 | |
| 392 | default: |
| 393 | ret = s->regs[saddr]; |
| 394 | break; |
| 395 | } |
| 396 | dolog("read %d:%d -> %d", saddr, iaddr, ret); |
| 397 | return ret; |
| 398 | } |
| 399 | |
| 400 | static void cs_write (void *opaque, hwaddr addr, |
| 401 | uint64_t val64, unsigned size) |
| 402 | { |
| 403 | CSState *s = opaque; |
| 404 | uint32_t saddr, iaddr, val; |
| 405 | |
| 406 | saddr = addr; |
| 407 | val = val64; |
| 408 | |
| 409 | switch (saddr) { |
| 410 | case Index_Address: |
| 411 | if (!(s->regs[Index_Address] & MCE) && (val & MCE) |
| 412 | && (s->dregs[Interface_Configuration] & (3 << 3))) |
| 413 | s->aci_counter = conf.aci_counter; |
| 414 | |
| 415 | s->regs[Index_Address] = val & ~(1 << 7); |
| 416 | break; |
| 417 | |
| 418 | case Index_Data: |
| 419 | if (!(s->dregs[MODE_And_ID] & MODE2)) |
| 420 | iaddr = s->regs[Index_Address] & 0x0f; |
| 421 | else |
| 422 | iaddr = s->regs[Index_Address] & 0x1f; |
| 423 | |
| 424 | switch (iaddr) { |
| 425 | case RESERVED: |
| 426 | case RESERVED_2: |
| 427 | case RESERVED_3: |
| 428 | lwarn("attempt to write 0x%x to reserved indirect register %d", |
| 429 | val, iaddr); |
| 430 | break; |
| 431 | |
| 432 | case FS_And_Playback_Data_Format: |
| 433 | if (s->regs[Index_Address] & MCE) { |
| 434 | cs_reset_voices (s, val); |
| 435 | } |
| 436 | else { |
| 437 | if (s->dregs[Alternate_Feature_Status] & PMCE) { |
| 438 | val = (val & ~0x0f) | (s->dregs[iaddr] & 0x0f); |
| 439 | cs_reset_voices (s, val); |
| 440 | } |
| 441 | else { |
| 442 | lwarn("[P]MCE(0x%x, 0x%x) is not set, val=0x%x", |
| 443 | s->regs[Index_Address], |
| 444 | s->dregs[Alternate_Feature_Status], |
| 445 | val); |
| 446 | break; |
| 447 | } |
| 448 | } |
| 449 | s->dregs[iaddr] = val; |
| 450 | break; |
| 451 | |
| 452 | case Interface_Configuration: |
| 453 | val &= ~(1 << 5); /* D5 is reserved */ |
| 454 | s->dregs[iaddr] = val; |
| 455 | if (val & PPIO) { |
| 456 | lwarn("PIO is not supported (0x%x)", val); |
| 457 | break; |
| 458 | } |
| 459 | if (val & PEN) { |
| 460 | if (!s->dma_running) { |
| 461 | cs_reset_voices (s, s->dregs[FS_And_Playback_Data_Format]); |
| 462 | } |
| 463 | } |
| 464 | else { |
| 465 | if (s->dma_running) { |
| 466 | IsaDmaClass *k = ISADMA_GET_CLASS(s->isa_dma); |
| 467 | k->release_DREQ(s->isa_dma, s->dma); |
| 468 | audio_be_set_active_out(s->audio_be, s->voice, 0); |
| 469 | s->dma_running = 0; |
| 470 | } |
| 471 | } |
| 472 | break; |
| 473 | |
| 474 | case Error_Status_And_Initialization: |
| 475 | lwarn("attempt to write to read only register %d", iaddr); |
| 476 | break; |
| 477 | |
| 478 | case MODE_And_ID: |
| 479 | dolog("val=0x%x", val); |
| 480 | if (val & MODE2) |
| 481 | s->dregs[iaddr] |= MODE2; |
| 482 | else |
| 483 | s->dregs[iaddr] &= ~MODE2; |
| 484 | break; |
| 485 | |
| 486 | case Alternate_Feature_Enable_I: |
| 487 | if (val & TE) |
| 488 | lerr("timer is not yet supported"); |
| 489 | s->dregs[iaddr] = val; |
| 490 | break; |
| 491 | |
| 492 | case Alternate_Feature_Status: |
| 493 | if ((s->dregs[iaddr] & PI) && !(val & PI)) { |
| 494 | /* XXX: TI CI */ |
| 495 | qemu_irq_lower (s->pic); |
| 496 | s->regs[Status] &= ~INT; |
| 497 | } |
| 498 | s->dregs[iaddr] = val; |
| 499 | break; |
| 500 | |
| 501 | case Version_Chip_ID: |
| 502 | lwarn("write to Version_Chip_ID register 0x%x", val); |
| 503 | s->dregs[iaddr] = val; |
| 504 | break; |
| 505 | |
| 506 | default: |
| 507 | s->dregs[iaddr] = val; |
| 508 | break; |
| 509 | } |
| 510 | dolog("written value 0x%x to indirect register %d", val, iaddr); |
| 511 | break; |
| 512 | |
| 513 | case Status: |
| 514 | if (s->regs[Status] & INT) { |
| 515 | qemu_irq_lower (s->pic); |
| 516 | } |
| 517 | s->regs[Status] &= ~INT; |
| 518 | s->dregs[Alternate_Feature_Status] &= ~(PI | CI | TI); |
| 519 | break; |
| 520 | |
| 521 | case PIO_Data: |
| 522 | lwarn("attempt to write value 0x%x to PIO register", val); |
| 523 | break; |
| 524 | } |
| 525 | } |
| 526 | |
| 527 | static int cs_write_audio (CSState *s, int nchan, int dma_pos, |
| 528 | int dma_len, int len) |
| 529 | { |
| 530 | int temp, net; |
| 531 | QEMU_UNINITIALIZED uint8_t tmpbuf[4096]; |
| 532 | IsaDmaClass *k = ISADMA_GET_CLASS(s->isa_dma); |
| 533 | |
| 534 | temp = len; |
| 535 | net = 0; |
| 536 | |
| 537 | while (temp) { |
| 538 | int left = dma_len - dma_pos; |
| 539 | int copied; |
| 540 | size_t to_copy; |
| 541 | |
| 542 | to_copy = MIN (temp, left); |
| 543 | if (to_copy > sizeof (tmpbuf)) { |
| 544 | to_copy = sizeof (tmpbuf); |
| 545 | } |
| 546 | |
| 547 | copied = k->read_memory(s->isa_dma, nchan, tmpbuf, dma_pos, to_copy); |
| 548 | if (s->tab) { |
| 549 | int i; |
| 550 | QEMU_UNINITIALIZED int16_t linbuf[4096]; |
| 551 | |
| 552 | for (i = 0; i < copied; ++i) |
| 553 | linbuf[i] = s->tab[tmpbuf[i]]; |
| 554 | copied = audio_be_write(s->audio_be, s->voice, linbuf, copied << 1); |
| 555 | copied >>= 1; |
| 556 | } |
| 557 | else { |
| 558 | copied = audio_be_write(s->audio_be, s->voice, tmpbuf, copied); |
| 559 | } |
| 560 | |
| 561 | temp -= copied; |
| 562 | dma_pos = (dma_pos + copied) % dma_len; |
| 563 | net += copied; |
| 564 | |
| 565 | if (!copied) { |
| 566 | break; |
| 567 | } |
| 568 | } |
| 569 | |
| 570 | return net; |
| 571 | } |
| 572 | |
| 573 | static int cs_dma_read (void *opaque, int nchan, int dma_pos, int dma_len) |
| 574 | { |
| 575 | CSState *s = opaque; |
| 576 | int copy, written; |
| 577 | int till = -1; |
| 578 | |
| 579 | copy = s->voice ? (s->audio_free >> (s->tab != NULL)) : dma_len; |
| 580 | |
| 581 | if (s->dregs[Pin_Control] & IEN) { |
| 582 | till = (s->dregs[Playback_Lower_Base_Count] |
| 583 | | (s->dregs[Playback_Upper_Base_Count] << 8)) << s->shift; |
| 584 | till -= s->transferred; |
| 585 | copy = MIN (till, copy); |
| 586 | } |
| 587 | |
| 588 | if ((copy <= 0) || (dma_len <= 0)) { |
| 589 | return dma_pos; |
| 590 | } |
| 591 | |
| 592 | written = cs_write_audio (s, nchan, dma_pos, dma_len, copy); |
| 593 | |
| 594 | dma_pos = (dma_pos + written) % dma_len; |
| 595 | s->audio_free -= (written << (s->tab != NULL)); |
| 596 | |
| 597 | if (written == till) { |
| 598 | s->regs[Status] |= INT; |
| 599 | s->dregs[Alternate_Feature_Status] |= PI; |
| 600 | s->transferred = 0; |
| 601 | qemu_irq_raise (s->pic); |
| 602 | } |
| 603 | else { |
| 604 | s->transferred += written; |
| 605 | } |
| 606 | |
| 607 | return dma_pos; |
| 608 | } |
| 609 | |
| 610 | static int cs4231a_pre_load (void *opaque) |
| 611 | { |
| 612 | CSState *s = opaque; |
| 613 | |
| 614 | if (s->dma_running) { |
| 615 | IsaDmaClass *k = ISADMA_GET_CLASS(s->isa_dma); |
| 616 | k->release_DREQ(s->isa_dma, s->dma); |
| 617 | audio_be_set_active_out(s->audio_be, s->voice, 0); |
| 618 | } |
| 619 | s->dma_running = 0; |
| 620 | return 0; |
| 621 | } |
| 622 | |
| 623 | static int cs4231a_post_load (void *opaque, int version_id) |
| 624 | { |
| 625 | CSState *s = opaque; |
| 626 | |
| 627 | if (s->dma_running && (s->dregs[Interface_Configuration] & PEN)) { |
| 628 | s->dma_running = 0; |
| 629 | cs_reset_voices (s, s->dregs[FS_And_Playback_Data_Format]); |
| 630 | } |
| 631 | return 0; |
| 632 | } |
| 633 | |
| 634 | static const VMStateDescription vmstate_cs4231a = { |
| 635 | .name = "cs4231a", |
| 636 | .version_id = 1, |
| 637 | .minimum_version_id = 1, |
| 638 | .pre_load = cs4231a_pre_load, |
| 639 | .post_load = cs4231a_post_load, |
| 640 | .fields = (const VMStateField[]) { |
| 641 | VMSTATE_UINT32_ARRAY (regs, CSState, CS_REGS), |
| 642 | VMSTATE_BUFFER (dregs, CSState), |
| 643 | VMSTATE_INT32 (dma_running, CSState), |
| 644 | VMSTATE_INT32 (audio_free, CSState), |
| 645 | VMSTATE_INT32 (transferred, CSState), |
| 646 | VMSTATE_INT32 (aci_counter, CSState), |
| 647 | VMSTATE_END_OF_LIST () |
| 648 | } |
| 649 | }; |
| 650 | |
| 651 | static const MemoryRegionOps cs_ioport_ops = { |
| 652 | .read = cs_read, |
| 653 | .write = cs_write, |
| 654 | .impl = { |
| 655 | .min_access_size = 1, |
| 656 | .max_access_size = 1, |
| 657 | } |
| 658 | }; |
| 659 | |
| 660 | static void cs4231a_initfn (Object *obj) |
| 661 | { |
| 662 | CSState *s = CS4231A (obj); |
| 663 | |
| 664 | memory_region_init_io (&s->ioports, OBJECT(s), &cs_ioport_ops, s, |
| 665 | "cs4231a", 4); |
| 666 | } |
| 667 | |
| 668 | static void cs4231a_realizefn (DeviceState *dev, Error **errp) |
| 669 | { |
| 670 | ISADevice *d = ISA_DEVICE (dev); |
| 671 | ISABus *bus = isa_bus_from_device(d); |
| 672 | CSState *s = CS4231A (dev); |
| 673 | IsaDmaClass *k; |
| 674 | |
| 675 | s->isa_dma = isa_bus_get_dma(bus, s->dma); |
| 676 | if (!s->isa_dma) { |
| 677 | error_setg(errp, "ISA controller does not support DMA"); |
| 678 | return; |
| 679 | } |
| 680 | |
| 681 | if (!audio_be_check(&s->audio_be, errp)) { |
| 682 | return; |
| 683 | } |
| 684 | |
| 685 | if (s->irq >= ISA_NUM_IRQS) { |
| 686 | error_setg(errp, "Invalid IRQ %d (max %d)", s->irq, ISA_NUM_IRQS - 1); |
| 687 | return; |
| 688 | } |
| 689 | s->pic = isa_bus_get_irq(bus, s->irq); |
| 690 | k = ISADMA_GET_CLASS(s->isa_dma); |
| 691 | k->register_channel(s->isa_dma, s->dma, cs_dma_read, s); |
| 692 | |
| 693 | isa_register_ioport (d, &s->ioports, s->port); |
| 694 | } |
| 695 | |
| 696 | static const Property cs4231a_properties[] = { |
| 697 | DEFINE_AUDIO_PROPERTIES(CSState, audio_be), |
| 698 | DEFINE_PROP_UINT32 ("iobase", CSState, port, 0x534), |
| 699 | DEFINE_PROP_UINT32 ("irq", CSState, irq, 9), |
| 700 | DEFINE_PROP_UINT32 ("dma", CSState, dma, 3), |
| 701 | }; |
| 702 | |
| 703 | static void cs4231a_class_initfn(ObjectClass *klass, const void *data) |
| 704 | { |
| 705 | DeviceClass *dc = DEVICE_CLASS (klass); |
| 706 | |
| 707 | dc->realize = cs4231a_realizefn; |
| 708 | device_class_set_legacy_reset(dc, cs4231a_reset); |
| 709 | set_bit(DEVICE_CATEGORY_SOUND, dc->categories); |
| 710 | dc->desc = "Crystal Semiconductor CS4231A"; |
| 711 | dc->vmsd = &vmstate_cs4231a; |
| 712 | device_class_set_props(dc, cs4231a_properties); |
| 713 | } |
| 714 | |
| 715 | static const TypeInfo cs4231a_info = { |
| 716 | .name = TYPE_CS4231A, |
| 717 | .parent = TYPE_ISA_DEVICE, |
| 718 | .instance_size = sizeof (CSState), |
| 719 | .instance_init = cs4231a_initfn, |
| 720 | .class_init = cs4231a_class_initfn, |
| 721 | }; |
| 722 | |
| 723 | static void cs4231a_register_types (void) |
| 724 | { |
| 725 | type_register_static (&cs4231a_info); |
| 726 | audio_register_model("cs4231a", "CS4231A", TYPE_CS4231A); |
| 727 | } |
| 728 | |
| 729 | type_init (cs4231a_register_types) |