1 /* 2 * Driver for NeoMagic 256AV and 256ZX chipsets. 3 * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de> 4 * 5 * Based on nm256_audio.c OSS driver in linux kernel. 6 * The original author of OSS nm256 driver wishes to remain anonymous, 7 * so I just put my acknoledgment to him/her here. 8 * The original author's web page is found at 9 * http://www.uglx.org/sony.html 10 * 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 */ 26 27 #include <sound/driver.h> 28 #include <asm/io.h> 29 #include <linux/delay.h> 30 #include <linux/interrupt.h> 31 #include <linux/init.h> 32 #include <linux/pci.h> 33 #include <linux/slab.h> 34 #include <linux/moduleparam.h> 35 #include <sound/core.h> 36 #include <sound/info.h> 37 #include <sound/control.h> 38 #include <sound/pcm.h> 39 #include <sound/ac97_codec.h> 40 #include <sound/initval.h> 41 42 #define CARD_NAME "NeoMagic 256AV/ZX" 43 #define DRIVER_NAME "NM256" 44 45 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); 46 MODULE_DESCRIPTION("NeoMagic NM256AV/ZX"); 47 MODULE_LICENSE("GPL"); 48 MODULE_SUPPORTED_DEVICE("{{NeoMagic,NM256AV}," 49 "{NeoMagic,NM256ZX}}"); 50 51 /* 52 * some compile conditions. 53 */ 54 55 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ 56 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 57 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; 58 static int playback_bufsize[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 16}; 59 static int capture_bufsize[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 16}; 60 static int force_ac97[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* disabled as default */ 61 static int buffer_top[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* not specified */ 62 static int use_cache[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* disabled */ 63 static int vaio_hack[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0}; /* disabled */ 64 static int reset_workaround[SNDRV_CARDS]; 65 66 module_param_array(index, int, NULL, 0444); 67 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); 68 module_param_array(id, charp, NULL, 0444); 69 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); 70 module_param_array(enable, bool, NULL, 0444); 71 MODULE_PARM_DESC(enable, "Enable this soundcard."); 72 module_param_array(playback_bufsize, int, NULL, 0444); 73 MODULE_PARM_DESC(playback_bufsize, "DAC frame size in kB for " CARD_NAME " soundcard."); 74 module_param_array(capture_bufsize, int, NULL, 0444); 75 MODULE_PARM_DESC(capture_bufsize, "ADC frame size in kB for " CARD_NAME " soundcard."); 76 module_param_array(force_ac97, bool, NULL, 0444); 77 MODULE_PARM_DESC(force_ac97, "Force to use AC97 codec for " CARD_NAME " soundcard."); 78 module_param_array(buffer_top, int, NULL, 0444); 79 MODULE_PARM_DESC(buffer_top, "Set the top address of audio buffer for " CARD_NAME " soundcard."); 80 module_param_array(use_cache, bool, NULL, 0444); 81 MODULE_PARM_DESC(use_cache, "Enable the cache for coefficient table access."); 82 module_param_array(vaio_hack, bool, NULL, 0444); 83 MODULE_PARM_DESC(vaio_hack, "Enable workaround for Sony VAIO notebooks."); 84 module_param_array(reset_workaround, bool, NULL, 0444); 85 MODULE_PARM_DESC(reset_workaround, "Enable AC97 RESET workaround for some laptops."); 86 87 /* 88 * hw definitions 89 */ 90 91 /* The BIOS signature. */ 92 #define NM_SIGNATURE 0x4e4d0000 93 /* Signature mask. */ 94 #define NM_SIG_MASK 0xffff0000 95 96 /* Size of the second memory area. */ 97 #define NM_PORT2_SIZE 4096 98 99 /* The base offset of the mixer in the second memory area. */ 100 #define NM_MIXER_OFFSET 0x600 101 102 /* The maximum size of a coefficient entry. */ 103 #define NM_MAX_PLAYBACK_COEF_SIZE 0x5000 104 #define NM_MAX_RECORD_COEF_SIZE 0x1260 105 106 /* The interrupt register. */ 107 #define NM_INT_REG 0xa04 108 /* And its bits. */ 109 #define NM_PLAYBACK_INT 0x40 110 #define NM_RECORD_INT 0x100 111 #define NM_MISC_INT_1 0x4000 112 #define NM_MISC_INT_2 0x1 113 #define NM_ACK_INT(chip, X) snd_nm256_writew(chip, NM_INT_REG, (X) << 1) 114 115 /* The AV's "mixer ready" status bit and location. */ 116 #define NM_MIXER_STATUS_OFFSET 0xa04 117 #define NM_MIXER_READY_MASK 0x0800 118 #define NM_MIXER_PRESENCE 0xa06 119 #define NM_PRESENCE_MASK 0x0050 120 #define NM_PRESENCE_VALUE 0x0040 121 122 /* 123 * For the ZX. It uses the same interrupt register, but it holds 32 124 * bits instead of 16. 125 */ 126 #define NM2_PLAYBACK_INT 0x10000 127 #define NM2_RECORD_INT 0x80000 128 #define NM2_MISC_INT_1 0x8 129 #define NM2_MISC_INT_2 0x2 130 #define NM2_ACK_INT(chip, X) snd_nm256_writel(chip, NM_INT_REG, (X)) 131 132 /* The ZX's "mixer ready" status bit and location. */ 133 #define NM2_MIXER_STATUS_OFFSET 0xa06 134 #define NM2_MIXER_READY_MASK 0x0800 135 136 /* The playback registers start from here. */ 137 #define NM_PLAYBACK_REG_OFFSET 0x0 138 /* The record registers start from here. */ 139 #define NM_RECORD_REG_OFFSET 0x200 140 141 /* The rate register is located 2 bytes from the start of the register area. */ 142 #define NM_RATE_REG_OFFSET 2 143 144 /* Mono/stereo flag, number of bits on playback, and rate mask. */ 145 #define NM_RATE_STEREO 1 146 #define NM_RATE_BITS_16 2 147 #define NM_RATE_MASK 0xf0 148 149 /* Playback enable register. */ 150 #define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1) 151 #define NM_PLAYBACK_ENABLE_FLAG 1 152 #define NM_PLAYBACK_ONESHOT 2 153 #define NM_PLAYBACK_FREERUN 4 154 155 /* Mutes the audio output. */ 156 #define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18) 157 #define NM_AUDIO_MUTE_LEFT 0x8000 158 #define NM_AUDIO_MUTE_RIGHT 0x0080 159 160 /* Recording enable register. */ 161 #define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0) 162 #define NM_RECORD_ENABLE_FLAG 1 163 #define NM_RECORD_FREERUN 2 164 165 /* coefficient buffer pointer */ 166 #define NM_COEFF_START_OFFSET 0x1c 167 #define NM_COEFF_END_OFFSET 0x20 168 169 /* DMA buffer offsets */ 170 #define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4) 171 #define NM_RBUFFER_END (NM_RECORD_REG_OFFSET + 0x10) 172 #define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc) 173 #define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8) 174 175 #define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4) 176 #define NM_PBUFFER_END (NM_PLAYBACK_REG_OFFSET + 0x14) 177 #define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc) 178 #define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8) 179 180 /* 181 * type definitions 182 */ 183 184 typedef struct snd_nm256 nm256_t; 185 typedef struct snd_nm256_stream nm256_stream_t; 186 187 struct snd_nm256_stream { 188 189 nm256_t *chip; 190 snd_pcm_substream_t *substream; 191 int running; 192 int suspended; 193 194 u32 buf; /* offset from chip->buffer */ 195 int bufsize; /* buffer size in bytes */ 196 void __iomem *bufptr; /* mapped pointer */ 197 unsigned long bufptr_addr; /* physical address of the mapped pointer */ 198 199 int dma_size; /* buffer size of the substream in bytes */ 200 int period_size; /* period size in bytes */ 201 int periods; /* # of periods */ 202 int shift; /* bit shifts */ 203 int cur_period; /* current period # */ 204 205 }; 206 207 struct snd_nm256 { 208 209 snd_card_t *card; 210 211 void __iomem *cport; /* control port */ 212 struct resource *res_cport; /* its resource */ 213 unsigned long cport_addr; /* physical address */ 214 215 void __iomem *buffer; /* buffer */ 216 struct resource *res_buffer; /* its resource */ 217 unsigned long buffer_addr; /* buffer phyiscal address */ 218 219 u32 buffer_start; /* start offset from pci resource 0 */ 220 u32 buffer_end; /* end offset */ 221 u32 buffer_size; /* total buffer size */ 222 223 u32 all_coeff_buf; /* coefficient buffer */ 224 u32 coeff_buf[2]; /* coefficient buffer for each stream */ 225 226 unsigned int coeffs_current: 1; /* coeff. table is loaded? */ 227 unsigned int use_cache: 1; /* use one big coef. table */ 228 unsigned int reset_workaround: 1; /* Workaround for some laptops to avoid freeze */ 229 230 int mixer_base; /* register offset of ac97 mixer */ 231 int mixer_status_offset; /* offset of mixer status reg. */ 232 int mixer_status_mask; /* bit mask to test the mixer status */ 233 234 int irq; 235 int irq_acks; 236 irqreturn_t (*interrupt)(int, void *, struct pt_regs *); 237 int badintrcount; /* counter to check bogus interrupts */ 238 struct semaphore irq_mutex; 239 240 nm256_stream_t streams[2]; 241 242 ac97_t *ac97; 243 244 snd_pcm_t *pcm; 245 246 struct pci_dev *pci; 247 248 spinlock_t reg_lock; 249 250 }; 251 252 253 /* 254 * include coefficient table 255 */ 256 #include "nm256_coef.c" 257 258 259 /* 260 * PCI ids 261 */ 262 263 #ifndef PCI_VENDOR_ID_NEOMAGIC 264 #define PCI_VENDOR_ID_NEOMEGIC 0x10c8 265 #endif 266 #ifndef PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO 267 #define PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO 0x8005 268 #endif 269 #ifndef PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO 270 #define PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO 0x8006 271 #endif 272 #ifndef PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO 273 #define PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO 0x8016 274 #endif 275 276 277 static struct pci_device_id snd_nm256_ids[] = { 278 {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 279 {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 280 {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 281 {0,}, 282 }; 283 284 MODULE_DEVICE_TABLE(pci, snd_nm256_ids); 285 286 287 /* 288 * lowlvel stuffs 289 */ 290 291 static inline u8 292 snd_nm256_readb(nm256_t *chip, int offset) 293 { 294 return readb(chip->cport + offset); 295 } 296 297 static inline u16 298 snd_nm256_readw(nm256_t *chip, int offset) 299 { 300 return readw(chip->cport + offset); 301 } 302 303 static inline u32 304 snd_nm256_readl(nm256_t *chip, int offset) 305 { 306 return readl(chip->cport + offset); 307 } 308 309 static inline void 310 snd_nm256_writeb(nm256_t *chip, int offset, u8 val) 311 { 312 writeb(val, chip->cport + offset); 313 } 314 315 static inline void 316 snd_nm256_writew(nm256_t *chip, int offset, u16 val) 317 { 318 writew(val, chip->cport + offset); 319 } 320 321 static inline void 322 snd_nm256_writel(nm256_t *chip, int offset, u32 val) 323 { 324 writel(val, chip->cport + offset); 325 } 326 327 static inline void 328 snd_nm256_write_buffer(nm256_t *chip, void *src, int offset, int size) 329 { 330 offset -= chip->buffer_start; 331 #ifdef SNDRV_CONFIG_DEBUG 332 if (offset < 0 || offset >= chip->buffer_size) { 333 snd_printk("write_buffer invalid offset = %d size = %d\n", offset, size); 334 return; 335 } 336 #endif 337 memcpy_toio(chip->buffer + offset, src, size); 338 } 339 340 /* 341 * coefficient handlers -- what a magic! 342 */ 343 344 static u16 345 snd_nm256_get_start_offset(int which) 346 { 347 u16 offset = 0; 348 while (which-- > 0) 349 offset += coefficient_sizes[which]; 350 return offset; 351 } 352 353 static void 354 snd_nm256_load_one_coefficient(nm256_t *chip, int stream, u32 port, int which) 355 { 356 u32 coeff_buf = chip->coeff_buf[stream]; 357 u16 offset = snd_nm256_get_start_offset(which); 358 u16 size = coefficient_sizes[which]; 359 360 snd_nm256_write_buffer(chip, coefficients + offset, coeff_buf, size); 361 snd_nm256_writel(chip, port, coeff_buf); 362 /* ??? Record seems to behave differently than playback. */ 363 if (stream == SNDRV_PCM_STREAM_PLAYBACK) 364 size--; 365 snd_nm256_writel(chip, port + 4, coeff_buf + size); 366 } 367 368 static void 369 snd_nm256_load_coefficient(nm256_t *chip, int stream, int number) 370 { 371 /* The enable register for the specified engine. */ 372 u32 poffset = (stream == SNDRV_PCM_STREAM_CAPTURE ? NM_RECORD_ENABLE_REG : NM_PLAYBACK_ENABLE_REG); 373 u32 addr = NM_COEFF_START_OFFSET; 374 375 addr += (stream == SNDRV_PCM_STREAM_CAPTURE ? NM_RECORD_REG_OFFSET : NM_PLAYBACK_REG_OFFSET); 376 377 if (snd_nm256_readb(chip, poffset) & 1) { 378 snd_printd("NM256: Engine was enabled while loading coefficients!\n"); 379 return; 380 } 381 382 /* The recording engine uses coefficient values 8-15. */ 383 number &= 7; 384 if (stream == SNDRV_PCM_STREAM_CAPTURE) 385 number += 8; 386 387 if (! chip->use_cache) { 388 snd_nm256_load_one_coefficient(chip, stream, addr, number); 389 return; 390 } 391 if (! chip->coeffs_current) { 392 snd_nm256_write_buffer(chip, coefficients, chip->all_coeff_buf, 393 NM_TOTAL_COEFF_COUNT * 4); 394 chip->coeffs_current = 1; 395 } else { 396 u32 base = chip->all_coeff_buf; 397 u32 offset = snd_nm256_get_start_offset(number); 398 u32 end_offset = offset + coefficient_sizes[number]; 399 snd_nm256_writel(chip, addr, base + offset); 400 if (stream == SNDRV_PCM_STREAM_PLAYBACK) 401 end_offset--; 402 snd_nm256_writel(chip, addr + 4, base + end_offset); 403 } 404 } 405 406 407 /* The actual rates supported by the card. */ 408 static unsigned int samplerates[8] = { 409 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000, 410 }; 411 static snd_pcm_hw_constraint_list_t constraints_rates = { 412 .count = ARRAY_SIZE(samplerates), 413 .list = samplerates, 414 .mask = 0, 415 }; 416 417 /* 418 * return the index of the target rate 419 */ 420 static int 421 snd_nm256_fixed_rate(unsigned int rate) 422 { 423 unsigned int i; 424 for (i = 0; i < ARRAY_SIZE(samplerates); i++) { 425 if (rate == samplerates[i]) 426 return i; 427 } 428 snd_BUG(); 429 return 0; 430 } 431 432 /* 433 * set sample rate and format 434 */ 435 static void 436 snd_nm256_set_format(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream) 437 { 438 snd_pcm_runtime_t *runtime = substream->runtime; 439 int rate_index = snd_nm256_fixed_rate(runtime->rate); 440 unsigned char ratebits = (rate_index << 4) & NM_RATE_MASK; 441 442 s->shift = 0; 443 if (snd_pcm_format_width(runtime->format) == 16) { 444 ratebits |= NM_RATE_BITS_16; 445 s->shift++; 446 } 447 if (runtime->channels > 1) { 448 ratebits |= NM_RATE_STEREO; 449 s->shift++; 450 } 451 452 runtime->rate = samplerates[rate_index]; 453 454 switch (substream->stream) { 455 case SNDRV_PCM_STREAM_PLAYBACK: 456 snd_nm256_load_coefficient(chip, 0, rate_index); /* 0 = playback */ 457 snd_nm256_writeb(chip, 458 NM_PLAYBACK_REG_OFFSET + NM_RATE_REG_OFFSET, 459 ratebits); 460 break; 461 case SNDRV_PCM_STREAM_CAPTURE: 462 snd_nm256_load_coefficient(chip, 1, rate_index); /* 1 = record */ 463 snd_nm256_writeb(chip, 464 NM_RECORD_REG_OFFSET + NM_RATE_REG_OFFSET, 465 ratebits); 466 break; 467 } 468 } 469 470 /* acquire interrupt */ 471 static int snd_nm256_acquire_irq(nm256_t *chip) 472 { 473 down(&chip->irq_mutex); 474 if (chip->irq < 0) { 475 if (request_irq(chip->pci->irq, chip->interrupt, SA_INTERRUPT|SA_SHIRQ, 476 chip->card->driver, (void*)chip)) { 477 snd_printk("unable to grab IRQ %d\n", chip->pci->irq); 478 up(&chip->irq_mutex); 479 return -EBUSY; 480 } 481 chip->irq = chip->pci->irq; 482 } 483 chip->irq_acks++; 484 up(&chip->irq_mutex); 485 return 0; 486 } 487 488 /* release interrupt */ 489 static void snd_nm256_release_irq(nm256_t *chip) 490 { 491 down(&chip->irq_mutex); 492 if (chip->irq_acks > 0) 493 chip->irq_acks--; 494 if (chip->irq_acks == 0 && chip->irq >= 0) { 495 free_irq(chip->irq, (void*)chip); 496 chip->irq = -1; 497 } 498 up(&chip->irq_mutex); 499 } 500 501 /* 502 * start / stop 503 */ 504 505 /* update the watermark (current period) */ 506 static void snd_nm256_pcm_mark(nm256_t *chip, nm256_stream_t *s, int reg) 507 { 508 s->cur_period++; 509 s->cur_period %= s->periods; 510 snd_nm256_writel(chip, reg, s->buf + s->cur_period * s->period_size); 511 } 512 513 #define snd_nm256_playback_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_PBUFFER_WMARK) 514 #define snd_nm256_capture_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_RBUFFER_WMARK) 515 516 static void 517 snd_nm256_playback_start(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream) 518 { 519 /* program buffer pointers */ 520 snd_nm256_writel(chip, NM_PBUFFER_START, s->buf); 521 snd_nm256_writel(chip, NM_PBUFFER_END, s->buf + s->dma_size - (1 << s->shift)); 522 snd_nm256_writel(chip, NM_PBUFFER_CURRP, s->buf); 523 snd_nm256_playback_mark(chip, s); 524 525 /* Enable playback engine and interrupts. */ 526 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 527 NM_PLAYBACK_ENABLE_FLAG | NM_PLAYBACK_FREERUN); 528 /* Enable both channels. */ 529 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0); 530 } 531 532 static void 533 snd_nm256_capture_start(nm256_t *chip, nm256_stream_t *s, snd_pcm_substream_t *substream) 534 { 535 /* program buffer pointers */ 536 snd_nm256_writel(chip, NM_RBUFFER_START, s->buf); 537 snd_nm256_writel(chip, NM_RBUFFER_END, s->buf + s->dma_size); 538 snd_nm256_writel(chip, NM_RBUFFER_CURRP, s->buf); 539 snd_nm256_capture_mark(chip, s); 540 541 /* Enable playback engine and interrupts. */ 542 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 543 NM_RECORD_ENABLE_FLAG | NM_RECORD_FREERUN); 544 } 545 546 /* Stop the play engine. */ 547 static void 548 snd_nm256_playback_stop(nm256_t *chip) 549 { 550 /* Shut off sound from both channels. */ 551 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 552 NM_AUDIO_MUTE_LEFT | NM_AUDIO_MUTE_RIGHT); 553 /* Disable play engine. */ 554 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 0); 555 } 556 557 static void 558 snd_nm256_capture_stop(nm256_t *chip) 559 { 560 /* Disable recording engine. */ 561 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 0); 562 } 563 564 static int 565 snd_nm256_playback_trigger(snd_pcm_substream_t *substream, int cmd) 566 { 567 nm256_t *chip = snd_pcm_substream_chip(substream); 568 nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data; 569 int err = 0; 570 571 snd_assert(s != NULL, return -ENXIO); 572 573 spin_lock(&chip->reg_lock); 574 switch (cmd) { 575 case SNDRV_PCM_TRIGGER_RESUME: 576 s->suspended = 0; 577 /* fallthru */ 578 case SNDRV_PCM_TRIGGER_START: 579 if (! s->running) { 580 snd_nm256_playback_start(chip, s, substream); 581 s->running = 1; 582 } 583 break; 584 case SNDRV_PCM_TRIGGER_SUSPEND: 585 s->suspended = 1; 586 /* fallthru */ 587 case SNDRV_PCM_TRIGGER_STOP: 588 if (s->running) { 589 snd_nm256_playback_stop(chip); 590 s->running = 0; 591 } 592 break; 593 default: 594 err = -EINVAL; 595 break; 596 } 597 spin_unlock(&chip->reg_lock); 598 return err; 599 } 600 601 static int 602 snd_nm256_capture_trigger(snd_pcm_substream_t *substream, int cmd) 603 { 604 nm256_t *chip = snd_pcm_substream_chip(substream); 605 nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data; 606 int err = 0; 607 608 snd_assert(s != NULL, return -ENXIO); 609 610 spin_lock(&chip->reg_lock); 611 switch (cmd) { 612 case SNDRV_PCM_TRIGGER_START: 613 case SNDRV_PCM_TRIGGER_RESUME: 614 if (! s->running) { 615 snd_nm256_capture_start(chip, s, substream); 616 s->running = 1; 617 } 618 break; 619 case SNDRV_PCM_TRIGGER_STOP: 620 case SNDRV_PCM_TRIGGER_SUSPEND: 621 if (s->running) { 622 snd_nm256_capture_stop(chip); 623 s->running = 0; 624 } 625 break; 626 default: 627 err = -EINVAL; 628 break; 629 } 630 spin_unlock(&chip->reg_lock); 631 return err; 632 } 633 634 635 /* 636 * prepare playback/capture channel 637 */ 638 static int snd_nm256_pcm_prepare(snd_pcm_substream_t *substream) 639 { 640 nm256_t *chip = snd_pcm_substream_chip(substream); 641 snd_pcm_runtime_t *runtime = substream->runtime; 642 nm256_stream_t *s = (nm256_stream_t*)runtime->private_data; 643 644 snd_assert(s, return -ENXIO); 645 s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size); 646 s->period_size = frames_to_bytes(runtime, substream->runtime->period_size); 647 s->periods = substream->runtime->periods; 648 s->cur_period = 0; 649 650 spin_lock_irq(&chip->reg_lock); 651 s->running = 0; 652 snd_nm256_set_format(chip, s, substream); 653 spin_unlock_irq(&chip->reg_lock); 654 655 return 0; 656 } 657 658 659 /* 660 * get the current pointer 661 */ 662 static snd_pcm_uframes_t 663 snd_nm256_playback_pointer(snd_pcm_substream_t * substream) 664 { 665 nm256_t *chip = snd_pcm_substream_chip(substream); 666 nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data; 667 unsigned long curp; 668 669 snd_assert(s, return 0); 670 curp = snd_nm256_readl(chip, NM_PBUFFER_CURRP) - (unsigned long)s->buf; 671 curp %= s->dma_size; 672 return bytes_to_frames(substream->runtime, curp); 673 } 674 675 static snd_pcm_uframes_t 676 snd_nm256_capture_pointer(snd_pcm_substream_t * substream) 677 { 678 nm256_t *chip = snd_pcm_substream_chip(substream); 679 nm256_stream_t *s = (nm256_stream_t*)substream->runtime->private_data; 680 unsigned long curp; 681 682 snd_assert(s != NULL, return 0); 683 curp = snd_nm256_readl(chip, NM_RBUFFER_CURRP) - (unsigned long)s->buf; 684 curp %= s->dma_size; 685 return bytes_to_frames(substream->runtime, curp); 686 } 687 688 /* Remapped I/O space can be accessible as pointer on i386 */ 689 /* This might be changed in the future */ 690 #ifndef __i386__ 691 /* 692 * silence / copy for playback 693 */ 694 static int 695 snd_nm256_playback_silence(snd_pcm_substream_t *substream, 696 int channel, /* not used (interleaved data) */ 697 snd_pcm_uframes_t pos, 698 snd_pcm_uframes_t count) 699 { 700 snd_pcm_runtime_t *runtime = substream->runtime; 701 nm256_stream_t *s = (nm256_stream_t*)runtime->private_data; 702 count = frames_to_bytes(runtime, count); 703 pos = frames_to_bytes(runtime, pos); 704 memset_io(s->bufptr + pos, 0, count); 705 return 0; 706 } 707 708 static int 709 snd_nm256_playback_copy(snd_pcm_substream_t *substream, 710 int channel, /* not used (interleaved data) */ 711 snd_pcm_uframes_t pos, 712 void __user *src, 713 snd_pcm_uframes_t count) 714 { 715 snd_pcm_runtime_t *runtime = substream->runtime; 716 nm256_stream_t *s = (nm256_stream_t*)runtime->private_data; 717 count = frames_to_bytes(runtime, count); 718 pos = frames_to_bytes(runtime, pos); 719 if (copy_from_user_toio(s->bufptr + pos, src, count)) 720 return -EFAULT; 721 return 0; 722 } 723 724 /* 725 * copy to user 726 */ 727 static int 728 snd_nm256_capture_copy(snd_pcm_substream_t *substream, 729 int channel, /* not used (interleaved data) */ 730 snd_pcm_uframes_t pos, 731 void __user *dst, 732 snd_pcm_uframes_t count) 733 { 734 snd_pcm_runtime_t *runtime = substream->runtime; 735 nm256_stream_t *s = (nm256_stream_t*)runtime->private_data; 736 count = frames_to_bytes(runtime, count); 737 pos = frames_to_bytes(runtime, pos); 738 if (copy_to_user_fromio(dst, s->bufptr + pos, count)) 739 return -EFAULT; 740 return 0; 741 } 742 743 #endif /* !__i386__ */ 744 745 746 /* 747 * update playback/capture watermarks 748 */ 749 750 /* spinlock held! */ 751 static void 752 snd_nm256_playback_update(nm256_t *chip) 753 { 754 nm256_stream_t *s; 755 756 s = &chip->streams[SNDRV_PCM_STREAM_PLAYBACK]; 757 if (s->running && s->substream) { 758 spin_unlock(&chip->reg_lock); 759 snd_pcm_period_elapsed(s->substream); 760 spin_lock(&chip->reg_lock); 761 snd_nm256_playback_mark(chip, s); 762 } 763 } 764 765 /* spinlock held! */ 766 static void 767 snd_nm256_capture_update(nm256_t *chip) 768 { 769 nm256_stream_t *s; 770 771 s = &chip->streams[SNDRV_PCM_STREAM_CAPTURE]; 772 if (s->running && s->substream) { 773 spin_unlock(&chip->reg_lock); 774 snd_pcm_period_elapsed(s->substream); 775 spin_lock(&chip->reg_lock); 776 snd_nm256_capture_mark(chip, s); 777 } 778 } 779 780 /* 781 * hardware info 782 */ 783 static snd_pcm_hardware_t snd_nm256_playback = 784 { 785 .info = SNDRV_PCM_INFO_MMAP_IOMEM |SNDRV_PCM_INFO_MMAP_VALID | 786 SNDRV_PCM_INFO_INTERLEAVED | 787 /*SNDRV_PCM_INFO_PAUSE |*/ 788 SNDRV_PCM_INFO_RESUME, 789 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 790 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000, 791 .rate_min = 8000, 792 .rate_max = 48000, 793 .channels_min = 1, 794 .channels_max = 2, 795 .periods_min = 2, 796 .periods_max = 1024, 797 .buffer_bytes_max = 128 * 1024, 798 .period_bytes_min = 256, 799 .period_bytes_max = 128 * 1024, 800 }; 801 802 static snd_pcm_hardware_t snd_nm256_capture = 803 { 804 .info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID | 805 SNDRV_PCM_INFO_INTERLEAVED | 806 /*SNDRV_PCM_INFO_PAUSE |*/ 807 SNDRV_PCM_INFO_RESUME, 808 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 809 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000, 810 .rate_min = 8000, 811 .rate_max = 48000, 812 .channels_min = 1, 813 .channels_max = 2, 814 .periods_min = 2, 815 .periods_max = 1024, 816 .buffer_bytes_max = 128 * 1024, 817 .period_bytes_min = 256, 818 .period_bytes_max = 128 * 1024, 819 }; 820 821 822 /* set dma transfer size */ 823 static int snd_nm256_pcm_hw_params(snd_pcm_substream_t *substream, snd_pcm_hw_params_t *hw_params) 824 { 825 /* area and addr are already set and unchanged */ 826 substream->runtime->dma_bytes = params_buffer_bytes(hw_params); 827 return 0; 828 } 829 830 /* 831 * open 832 */ 833 static void snd_nm256_setup_stream(nm256_t *chip, nm256_stream_t *s, 834 snd_pcm_substream_t *substream, 835 snd_pcm_hardware_t *hw_ptr) 836 { 837 snd_pcm_runtime_t *runtime = substream->runtime; 838 839 s->running = 0; 840 runtime->hw = *hw_ptr; 841 runtime->hw.buffer_bytes_max = s->bufsize; 842 runtime->hw.period_bytes_max = s->bufsize / 2; 843 runtime->dma_area = (void*) s->bufptr; 844 runtime->dma_addr = s->bufptr_addr; 845 runtime->dma_bytes = s->bufsize; 846 runtime->private_data = s; 847 s->substream = substream; 848 849 snd_pcm_set_sync(substream); 850 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 851 &constraints_rates); 852 } 853 854 static int 855 snd_nm256_playback_open(snd_pcm_substream_t *substream) 856 { 857 nm256_t *chip = snd_pcm_substream_chip(substream); 858 859 if (snd_nm256_acquire_irq(chip) < 0) 860 return -EBUSY; 861 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK], 862 substream, &snd_nm256_playback); 863 return 0; 864 } 865 866 static int 867 snd_nm256_capture_open(snd_pcm_substream_t *substream) 868 { 869 nm256_t *chip = snd_pcm_substream_chip(substream); 870 871 if (snd_nm256_acquire_irq(chip) < 0) 872 return -EBUSY; 873 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_CAPTURE], 874 substream, &snd_nm256_capture); 875 return 0; 876 } 877 878 /* 879 * close - we don't have to do special.. 880 */ 881 static int 882 snd_nm256_playback_close(snd_pcm_substream_t *substream) 883 { 884 nm256_t *chip = snd_pcm_substream_chip(substream); 885 886 snd_nm256_release_irq(chip); 887 return 0; 888 } 889 890 891 static int 892 snd_nm256_capture_close(snd_pcm_substream_t *substream) 893 { 894 nm256_t *chip = snd_pcm_substream_chip(substream); 895 896 snd_nm256_release_irq(chip); 897 return 0; 898 } 899 900 /* 901 * create a pcm instance 902 */ 903 static snd_pcm_ops_t snd_nm256_playback_ops = { 904 .open = snd_nm256_playback_open, 905 .close = snd_nm256_playback_close, 906 .ioctl = snd_pcm_lib_ioctl, 907 .hw_params = snd_nm256_pcm_hw_params, 908 .prepare = snd_nm256_pcm_prepare, 909 .trigger = snd_nm256_playback_trigger, 910 .pointer = snd_nm256_playback_pointer, 911 #ifndef __i386__ 912 .copy = snd_nm256_playback_copy, 913 .silence = snd_nm256_playback_silence, 914 #endif 915 .mmap = snd_pcm_lib_mmap_iomem, 916 }; 917 918 static snd_pcm_ops_t snd_nm256_capture_ops = { 919 .open = snd_nm256_capture_open, 920 .close = snd_nm256_capture_close, 921 .ioctl = snd_pcm_lib_ioctl, 922 .hw_params = snd_nm256_pcm_hw_params, 923 .prepare = snd_nm256_pcm_prepare, 924 .trigger = snd_nm256_capture_trigger, 925 .pointer = snd_nm256_capture_pointer, 926 #ifndef __i386__ 927 .copy = snd_nm256_capture_copy, 928 #endif 929 .mmap = snd_pcm_lib_mmap_iomem, 930 }; 931 932 static int __devinit 933 snd_nm256_pcm(nm256_t *chip, int device) 934 { 935 snd_pcm_t *pcm; 936 int i, err; 937 938 for (i = 0; i < 2; i++) { 939 nm256_stream_t *s = &chip->streams[i]; 940 s->bufptr = chip->buffer + (s->buf - chip->buffer_start); 941 s->bufptr_addr = chip->buffer_addr + (s->buf - chip->buffer_start); 942 } 943 944 err = snd_pcm_new(chip->card, chip->card->driver, device, 945 1, 1, &pcm); 946 if (err < 0) 947 return err; 948 949 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_nm256_playback_ops); 950 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_nm256_capture_ops); 951 952 pcm->private_data = chip; 953 pcm->info_flags = 0; 954 chip->pcm = pcm; 955 956 return 0; 957 } 958 959 960 /* 961 * Initialize the hardware. 962 */ 963 static void 964 snd_nm256_init_chip(nm256_t *chip) 965 { 966 /* Reset everything. */ 967 snd_nm256_writeb(chip, 0x0, 0x11); 968 snd_nm256_writew(chip, 0x214, 0); 969 /* stop sounds.. */ 970 //snd_nm256_playback_stop(chip); 971 //snd_nm256_capture_stop(chip); 972 } 973 974 975 static irqreturn_t 976 snd_nm256_intr_check(nm256_t *chip) 977 { 978 if (chip->badintrcount++ > 1000) { 979 /* 980 * I'm not sure if the best thing is to stop the card from 981 * playing or just release the interrupt (after all, we're in 982 * a bad situation, so doing fancy stuff may not be such a good 983 * idea). 984 * 985 * I worry about the card engine continuing to play noise 986 * over and over, however--that could become a very 987 * obnoxious problem. And we know that when this usually 988 * happens things are fairly safe, it just means the user's 989 * inserted a PCMCIA card and someone's spamming us with IRQ 9s. 990 */ 991 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running) 992 snd_nm256_playback_stop(chip); 993 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running) 994 snd_nm256_capture_stop(chip); 995 chip->badintrcount = 0; 996 return IRQ_HANDLED; 997 } 998 return IRQ_NONE; 999 } 1000 1001 /* 1002 * Handle a potential interrupt for the device referred to by DEV_ID. 1003 * 1004 * I don't like the cut-n-paste job here either between the two routines, 1005 * but there are sufficient differences between the two interrupt handlers 1006 * that parameterizing it isn't all that great either. (Could use a macro, 1007 * I suppose...yucky bleah.) 1008 */ 1009 1010 static irqreturn_t 1011 snd_nm256_interrupt(int irq, void *dev_id, struct pt_regs *dummy) 1012 { 1013 nm256_t *chip = dev_id; 1014 u16 status; 1015 u8 cbyte; 1016 1017 status = snd_nm256_readw(chip, NM_INT_REG); 1018 1019 /* Not ours. */ 1020 if (status == 0) 1021 return snd_nm256_intr_check(chip); 1022 1023 chip->badintrcount = 0; 1024 1025 /* Rather boring; check for individual interrupts and process them. */ 1026 1027 spin_lock(&chip->reg_lock); 1028 if (status & NM_PLAYBACK_INT) { 1029 status &= ~NM_PLAYBACK_INT; 1030 NM_ACK_INT(chip, NM_PLAYBACK_INT); 1031 snd_nm256_playback_update(chip); 1032 } 1033 1034 if (status & NM_RECORD_INT) { 1035 status &= ~NM_RECORD_INT; 1036 NM_ACK_INT(chip, NM_RECORD_INT); 1037 snd_nm256_capture_update(chip); 1038 } 1039 1040 if (status & NM_MISC_INT_1) { 1041 status &= ~NM_MISC_INT_1; 1042 NM_ACK_INT(chip, NM_MISC_INT_1); 1043 snd_printd("NM256: Got misc interrupt #1\n"); 1044 snd_nm256_writew(chip, NM_INT_REG, 0x8000); 1045 cbyte = snd_nm256_readb(chip, 0x400); 1046 snd_nm256_writeb(chip, 0x400, cbyte | 2); 1047 } 1048 1049 if (status & NM_MISC_INT_2) { 1050 status &= ~NM_MISC_INT_2; 1051 NM_ACK_INT(chip, NM_MISC_INT_2); 1052 snd_printd("NM256: Got misc interrupt #2\n"); 1053 cbyte = snd_nm256_readb(chip, 0x400); 1054 snd_nm256_writeb(chip, 0x400, cbyte & ~2); 1055 } 1056 1057 /* Unknown interrupt. */ 1058 if (status) { 1059 snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n", 1060 status); 1061 /* Pray. */ 1062 NM_ACK_INT(chip, status); 1063 } 1064 1065 spin_unlock(&chip->reg_lock); 1066 return IRQ_HANDLED; 1067 } 1068 1069 /* 1070 * Handle a potential interrupt for the device referred to by DEV_ID. 1071 * This handler is for the 256ZX, and is very similar to the non-ZX 1072 * routine. 1073 */ 1074 1075 static irqreturn_t 1076 snd_nm256_interrupt_zx(int irq, void *dev_id, struct pt_regs *dummy) 1077 { 1078 nm256_t *chip = dev_id; 1079 u32 status; 1080 u8 cbyte; 1081 1082 status = snd_nm256_readl(chip, NM_INT_REG); 1083 1084 /* Not ours. */ 1085 if (status == 0) 1086 return snd_nm256_intr_check(chip); 1087 1088 chip->badintrcount = 0; 1089 1090 /* Rather boring; check for individual interrupts and process them. */ 1091 1092 spin_lock(&chip->reg_lock); 1093 if (status & NM2_PLAYBACK_INT) { 1094 status &= ~NM2_PLAYBACK_INT; 1095 NM2_ACK_INT(chip, NM2_PLAYBACK_INT); 1096 snd_nm256_playback_update(chip); 1097 } 1098 1099 if (status & NM2_RECORD_INT) { 1100 status &= ~NM2_RECORD_INT; 1101 NM2_ACK_INT(chip, NM2_RECORD_INT); 1102 snd_nm256_capture_update(chip); 1103 } 1104 1105 if (status & NM2_MISC_INT_1) { 1106 status &= ~NM2_MISC_INT_1; 1107 NM2_ACK_INT(chip, NM2_MISC_INT_1); 1108 snd_printd("NM256: Got misc interrupt #1\n"); 1109 cbyte = snd_nm256_readb(chip, 0x400); 1110 snd_nm256_writeb(chip, 0x400, cbyte | 2); 1111 } 1112 1113 if (status & NM2_MISC_INT_2) { 1114 status &= ~NM2_MISC_INT_2; 1115 NM2_ACK_INT(chip, NM2_MISC_INT_2); 1116 snd_printd("NM256: Got misc interrupt #2\n"); 1117 cbyte = snd_nm256_readb(chip, 0x400); 1118 snd_nm256_writeb(chip, 0x400, cbyte & ~2); 1119 } 1120 1121 /* Unknown interrupt. */ 1122 if (status) { 1123 snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n", 1124 status); 1125 /* Pray. */ 1126 NM2_ACK_INT(chip, status); 1127 } 1128 1129 spin_unlock(&chip->reg_lock); 1130 return IRQ_HANDLED; 1131 } 1132 1133 /* 1134 * AC97 interface 1135 */ 1136 1137 /* 1138 * Waits for the mixer to become ready to be written; returns a zero value 1139 * if it timed out. 1140 */ 1141 static int 1142 snd_nm256_ac97_ready(nm256_t *chip) 1143 { 1144 int timeout = 10; 1145 u32 testaddr; 1146 u16 testb; 1147 1148 testaddr = chip->mixer_status_offset; 1149 testb = chip->mixer_status_mask; 1150 1151 /* 1152 * Loop around waiting for the mixer to become ready. 1153 */ 1154 while (timeout-- > 0) { 1155 if ((snd_nm256_readw(chip, testaddr) & testb) == 0) 1156 return 1; 1157 udelay(100); 1158 } 1159 return 0; 1160 } 1161 1162 /* 1163 */ 1164 static unsigned short 1165 snd_nm256_ac97_read(ac97_t *ac97, unsigned short reg) 1166 { 1167 nm256_t *chip = ac97->private_data; 1168 int res; 1169 1170 if (reg >= 128) 1171 return 0; 1172 1173 if (! snd_nm256_ac97_ready(chip)) 1174 return 0; 1175 res = snd_nm256_readw(chip, chip->mixer_base + reg); 1176 /* Magic delay. Bleah yucky. */ 1177 msleep(1); 1178 return res; 1179 } 1180 1181 /* 1182 */ 1183 static void 1184 snd_nm256_ac97_write(ac97_t *ac97, 1185 unsigned short reg, unsigned short val) 1186 { 1187 nm256_t *chip = ac97->private_data; 1188 int tries = 2; 1189 u32 base; 1190 1191 base = chip->mixer_base; 1192 1193 snd_nm256_ac97_ready(chip); 1194 1195 /* Wait for the write to take, too. */ 1196 while (tries-- > 0) { 1197 snd_nm256_writew(chip, base + reg, val); 1198 msleep(1); /* a little delay here seems better.. */ 1199 if (snd_nm256_ac97_ready(chip)) 1200 return; 1201 } 1202 snd_printd("nm256: ac97 codec not ready..\n"); 1203 } 1204 1205 /* initialize the ac97 into a known state */ 1206 static void 1207 snd_nm256_ac97_reset(ac97_t *ac97) 1208 { 1209 nm256_t *chip = ac97->private_data; 1210 1211 /* Reset the mixer. 'Tis magic! */ 1212 snd_nm256_writeb(chip, 0x6c0, 1); 1213 if (! chip->reset_workaround) { 1214 /* Dell latitude LS will lock up by this */ 1215 snd_nm256_writeb(chip, 0x6cc, 0x87); 1216 } 1217 snd_nm256_writeb(chip, 0x6cc, 0x80); 1218 snd_nm256_writeb(chip, 0x6cc, 0x0); 1219 } 1220 1221 /* create an ac97 mixer interface */ 1222 static int __devinit 1223 snd_nm256_mixer(nm256_t *chip) 1224 { 1225 ac97_bus_t *pbus; 1226 ac97_template_t ac97; 1227 int i, err; 1228 static ac97_bus_ops_t ops = { 1229 .reset = snd_nm256_ac97_reset, 1230 .write = snd_nm256_ac97_write, 1231 .read = snd_nm256_ac97_read, 1232 }; 1233 /* looks like nm256 hangs up when unexpected registers are touched... */ 1234 static int mixer_regs[] = { 1235 AC97_MASTER, AC97_HEADPHONE, AC97_MASTER_MONO, 1236 AC97_PC_BEEP, AC97_PHONE, AC97_MIC, AC97_LINE, AC97_CD, 1237 AC97_VIDEO, AC97_AUX, AC97_PCM, AC97_REC_SEL, 1238 AC97_REC_GAIN, AC97_GENERAL_PURPOSE, AC97_3D_CONTROL, 1239 /*AC97_EXTENDED_ID,*/ 1240 AC97_VENDOR_ID1, AC97_VENDOR_ID2, 1241 -1 1242 }; 1243 1244 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0) 1245 return err; 1246 1247 memset(&ac97, 0, sizeof(ac97)); 1248 ac97.scaps = AC97_SCAP_AUDIO; /* we support audio! */ 1249 ac97.limited_regs = 1; 1250 for (i = 0; mixer_regs[i] >= 0; i++) 1251 set_bit(mixer_regs[i], ac97.reg_accessed); 1252 ac97.private_data = chip; 1253 pbus->no_vra = 1; 1254 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97); 1255 if (err < 0) 1256 return err; 1257 if (! (chip->ac97->id & (0xf0000000))) { 1258 /* looks like an invalid id */ 1259 sprintf(chip->card->mixername, "%s AC97", chip->card->driver); 1260 } 1261 return 0; 1262 } 1263 1264 /* 1265 * See if the signature left by the NM256 BIOS is intact; if so, we use 1266 * the associated address as the end of our audio buffer in the video 1267 * RAM. 1268 */ 1269 1270 static int __devinit 1271 snd_nm256_peek_for_sig(nm256_t *chip) 1272 { 1273 /* The signature is located 1K below the end of video RAM. */ 1274 void __iomem *temp; 1275 /* Default buffer end is 5120 bytes below the top of RAM. */ 1276 unsigned long pointer_found = chip->buffer_end - 0x1400; 1277 u32 sig; 1278 1279 temp = ioremap_nocache(chip->buffer_addr + chip->buffer_end - 0x400, 16); 1280 if (temp == NULL) { 1281 snd_printk("Unable to scan for card signature in video RAM\n"); 1282 return -EBUSY; 1283 } 1284 1285 sig = readl(temp); 1286 if ((sig & NM_SIG_MASK) == NM_SIGNATURE) { 1287 u32 pointer = readl(temp + 4); 1288 1289 /* 1290 * If it's obviously invalid, don't use it 1291 */ 1292 if (pointer == 0xffffffff || 1293 pointer < chip->buffer_size || 1294 pointer > chip->buffer_end) { 1295 snd_printk("invalid signature found: 0x%x\n", pointer); 1296 iounmap(temp); 1297 return -ENODEV; 1298 } else { 1299 pointer_found = pointer; 1300 printk(KERN_INFO "nm256: found card signature in video RAM: 0x%x\n", pointer); 1301 } 1302 } 1303 1304 iounmap(temp); 1305 chip->buffer_end = pointer_found; 1306 1307 return 0; 1308 } 1309 1310 #ifdef CONFIG_PM 1311 /* 1312 * APM event handler, so the card is properly reinitialized after a power 1313 * event. 1314 */ 1315 static int nm256_suspend(snd_card_t *card, pm_message_t state) 1316 { 1317 nm256_t *chip = card->pm_private_data; 1318 1319 snd_pcm_suspend_all(chip->pcm); 1320 snd_ac97_suspend(chip->ac97); 1321 chip->coeffs_current = 0; 1322 pci_disable_device(chip->pci); 1323 return 0; 1324 } 1325 1326 static int nm256_resume(snd_card_t *card) 1327 { 1328 nm256_t *chip = card->pm_private_data; 1329 int i; 1330 1331 /* Perform a full reset on the hardware */ 1332 pci_enable_device(chip->pci); 1333 snd_nm256_init_chip(chip); 1334 1335 /* restore ac97 */ 1336 snd_ac97_resume(chip->ac97); 1337 1338 for (i = 0; i < 2; i++) { 1339 nm256_stream_t *s = &chip->streams[i]; 1340 if (s->substream && s->suspended) { 1341 spin_lock_irq(&chip->reg_lock); 1342 snd_nm256_set_format(chip, s, s->substream); 1343 spin_unlock_irq(&chip->reg_lock); 1344 } 1345 } 1346 1347 return 0; 1348 } 1349 #endif /* CONFIG_PM */ 1350 1351 static int snd_nm256_free(nm256_t *chip) 1352 { 1353 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running) 1354 snd_nm256_playback_stop(chip); 1355 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running) 1356 snd_nm256_capture_stop(chip); 1357 1358 if (chip->irq >= 0) 1359 synchronize_irq(chip->irq); 1360 1361 if (chip->cport) 1362 iounmap(chip->cport); 1363 if (chip->buffer) 1364 iounmap(chip->buffer); 1365 if (chip->res_cport) { 1366 release_resource(chip->res_cport); 1367 kfree_nocheck(chip->res_cport); 1368 } 1369 if (chip->res_buffer) { 1370 release_resource(chip->res_buffer); 1371 kfree_nocheck(chip->res_buffer); 1372 } 1373 if (chip->irq >= 0) 1374 free_irq(chip->irq, (void*)chip); 1375 1376 pci_disable_device(chip->pci); 1377 kfree(chip); 1378 return 0; 1379 } 1380 1381 static int snd_nm256_dev_free(snd_device_t *device) 1382 { 1383 nm256_t *chip = device->device_data; 1384 return snd_nm256_free(chip); 1385 } 1386 1387 static int __devinit 1388 snd_nm256_create(snd_card_t *card, struct pci_dev *pci, 1389 int play_bufsize, int capt_bufsize, 1390 int force_load, 1391 u32 buffertop, 1392 int usecache, 1393 nm256_t **chip_ret) 1394 { 1395 nm256_t *chip; 1396 int err, pval; 1397 static snd_device_ops_t ops = { 1398 .dev_free = snd_nm256_dev_free, 1399 }; 1400 u32 addr; 1401 1402 *chip_ret = NULL; 1403 1404 if ((err = pci_enable_device(pci)) < 0) 1405 return err; 1406 1407 chip = kcalloc(1, sizeof(*chip), GFP_KERNEL); 1408 if (chip == NULL) { 1409 pci_disable_device(pci); 1410 return -ENOMEM; 1411 } 1412 1413 chip->card = card; 1414 chip->pci = pci; 1415 chip->use_cache = usecache; 1416 spin_lock_init(&chip->reg_lock); 1417 chip->irq = -1; 1418 init_MUTEX(&chip->irq_mutex); 1419 1420 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize = play_bufsize; 1421 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize = capt_bufsize; 1422 1423 /* 1424 * The NM256 has two memory ports. The first port is nothing 1425 * more than a chunk of video RAM, which is used as the I/O ring 1426 * buffer. The second port has the actual juicy stuff (like the 1427 * mixer and the playback engine control registers). 1428 */ 1429 1430 chip->buffer_addr = pci_resource_start(pci, 0); 1431 chip->cport_addr = pci_resource_start(pci, 1); 1432 1433 /* Init the memory port info. */ 1434 /* remap control port (#2) */ 1435 chip->res_cport = request_mem_region(chip->cport_addr, NM_PORT2_SIZE, 1436 card->driver); 1437 if (chip->res_cport == NULL) { 1438 snd_printk("memory region 0x%lx (size 0x%x) busy\n", 1439 chip->cport_addr, NM_PORT2_SIZE); 1440 err = -EBUSY; 1441 goto __error; 1442 } 1443 chip->cport = ioremap_nocache(chip->cport_addr, NM_PORT2_SIZE); 1444 if (chip->cport == NULL) { 1445 snd_printk("unable to map control port %lx\n", chip->cport_addr); 1446 err = -ENOMEM; 1447 goto __error; 1448 } 1449 1450 if (!strcmp(card->driver, "NM256AV")) { 1451 /* Ok, try to see if this is a non-AC97 version of the hardware. */ 1452 pval = snd_nm256_readw(chip, NM_MIXER_PRESENCE); 1453 if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) { 1454 if (! force_load) { 1455 printk(KERN_ERR "nm256: no ac97 is found!\n"); 1456 printk(KERN_ERR " force the driver to load by passing in the module parameter\n"); 1457 printk(KERN_ERR " force_ac97=1\n"); 1458 printk(KERN_ERR " or try sb16 or cs423x drivers instead.\n"); 1459 err = -ENXIO; 1460 goto __error; 1461 } 1462 } 1463 chip->buffer_end = 2560 * 1024; 1464 chip->interrupt = snd_nm256_interrupt; 1465 chip->mixer_status_offset = NM_MIXER_STATUS_OFFSET; 1466 chip->mixer_status_mask = NM_MIXER_READY_MASK; 1467 } else { 1468 /* Not sure if there is any relevant detect for the ZX or not. */ 1469 if (snd_nm256_readb(chip, 0xa0b) != 0) 1470 chip->buffer_end = 6144 * 1024; 1471 else 1472 chip->buffer_end = 4096 * 1024; 1473 1474 chip->interrupt = snd_nm256_interrupt_zx; 1475 chip->mixer_status_offset = NM2_MIXER_STATUS_OFFSET; 1476 chip->mixer_status_mask = NM2_MIXER_READY_MASK; 1477 } 1478 1479 chip->buffer_size = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize + chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize; 1480 if (chip->use_cache) 1481 chip->buffer_size += NM_TOTAL_COEFF_COUNT * 4; 1482 else 1483 chip->buffer_size += NM_MAX_PLAYBACK_COEF_SIZE + NM_MAX_RECORD_COEF_SIZE; 1484 1485 if (buffertop >= chip->buffer_size && buffertop < chip->buffer_end) 1486 chip->buffer_end = buffertop; 1487 else { 1488 /* get buffer end pointer from signature */ 1489 if ((err = snd_nm256_peek_for_sig(chip)) < 0) 1490 goto __error; 1491 } 1492 1493 chip->buffer_start = chip->buffer_end - chip->buffer_size; 1494 chip->buffer_addr += chip->buffer_start; 1495 1496 printk(KERN_INFO "nm256: Mapping port 1 from 0x%x - 0x%x\n", 1497 chip->buffer_start, chip->buffer_end); 1498 1499 chip->res_buffer = request_mem_region(chip->buffer_addr, 1500 chip->buffer_size, 1501 card->driver); 1502 if (chip->res_buffer == NULL) { 1503 snd_printk("nm256: buffer 0x%lx (size 0x%x) busy\n", 1504 chip->buffer_addr, chip->buffer_size); 1505 err = -EBUSY; 1506 goto __error; 1507 } 1508 chip->buffer = ioremap_nocache(chip->buffer_addr, chip->buffer_size); 1509 if (chip->buffer == NULL) { 1510 err = -ENOMEM; 1511 snd_printk("unable to map ring buffer at %lx\n", chip->buffer_addr); 1512 goto __error; 1513 } 1514 1515 /* set offsets */ 1516 addr = chip->buffer_start; 1517 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].buf = addr; 1518 addr += chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize; 1519 chip->streams[SNDRV_PCM_STREAM_CAPTURE].buf = addr; 1520 addr += chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize; 1521 if (chip->use_cache) { 1522 chip->all_coeff_buf = addr; 1523 } else { 1524 chip->coeff_buf[SNDRV_PCM_STREAM_PLAYBACK] = addr; 1525 addr += NM_MAX_PLAYBACK_COEF_SIZE; 1526 chip->coeff_buf[SNDRV_PCM_STREAM_CAPTURE] = addr; 1527 } 1528 1529 /* Fixed setting. */ 1530 chip->mixer_base = NM_MIXER_OFFSET; 1531 1532 chip->coeffs_current = 0; 1533 1534 snd_nm256_init_chip(chip); 1535 1536 // pci_set_master(pci); /* needed? */ 1537 1538 snd_card_set_pm_callback(card, nm256_suspend, nm256_resume, chip); 1539 1540 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) 1541 goto __error; 1542 1543 snd_card_set_dev(card, &pci->dev); 1544 1545 *chip_ret = chip; 1546 return 0; 1547 1548 __error: 1549 snd_nm256_free(chip); 1550 return err; 1551 } 1552 1553 1554 struct nm256_quirk { 1555 unsigned short vendor; 1556 unsigned short device; 1557 int type; 1558 }; 1559 1560 enum { NM_BLACKLISTED, NM_RESET_WORKAROUND }; 1561 1562 static struct nm256_quirk nm256_quirks[] __devinitdata = { 1563 /* HP omnibook 4150 has cs4232 codec internally */ 1564 { .vendor = 0x103c, .device = 0x0007, .type = NM_BLACKLISTED }, 1565 /* Sony PCG-F305 */ 1566 { .vendor = 0x104d, .device = 0x8041, .type = NM_RESET_WORKAROUND }, 1567 /* Dell Latitude LS */ 1568 { .vendor = 0x1028, .device = 0x0080, .type = NM_RESET_WORKAROUND }, 1569 { } /* terminator */ 1570 }; 1571 1572 1573 static int __devinit snd_nm256_probe(struct pci_dev *pci, 1574 const struct pci_device_id *pci_id) 1575 { 1576 static int dev; 1577 snd_card_t *card; 1578 nm256_t *chip; 1579 int err; 1580 unsigned int xbuffer_top; 1581 struct nm256_quirk *q; 1582 u16 subsystem_vendor, subsystem_device; 1583 1584 if (dev >= SNDRV_CARDS) 1585 return -ENODEV; 1586 if (!enable[dev]) { 1587 dev++; 1588 return -ENOENT; 1589 } 1590 1591 pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor); 1592 pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device); 1593 1594 for (q = nm256_quirks; q->vendor; q++) { 1595 if (q->vendor == subsystem_vendor && q->device == subsystem_device) { 1596 switch (q->type) { 1597 case NM_BLACKLISTED: 1598 printk(KERN_INFO "nm256: The device is blacklisted. Loading stopped\n"); 1599 return -ENODEV; 1600 case NM_RESET_WORKAROUND: 1601 reset_workaround[dev] = 1; 1602 break; 1603 } 1604 } 1605 } 1606 1607 card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0); 1608 if (card == NULL) 1609 return -ENOMEM; 1610 1611 switch (pci->device) { 1612 case PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO: 1613 strcpy(card->driver, "NM256AV"); 1614 break; 1615 case PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO: 1616 strcpy(card->driver, "NM256ZX"); 1617 break; 1618 case PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO: 1619 strcpy(card->driver, "NM256XL+"); 1620 break; 1621 default: 1622 snd_printk("invalid device id 0x%x\n", pci->device); 1623 snd_card_free(card); 1624 return -EINVAL; 1625 } 1626 1627 if (vaio_hack[dev]) 1628 xbuffer_top = 0x25a800; /* this avoids conflicts with XFree86 server */ 1629 else 1630 xbuffer_top = buffer_top[dev]; 1631 1632 if (playback_bufsize[dev] < 4) 1633 playback_bufsize[dev] = 4; 1634 if (playback_bufsize[dev] > 128) 1635 playback_bufsize[dev] = 128; 1636 if (capture_bufsize[dev] < 4) 1637 capture_bufsize[dev] = 4; 1638 if (capture_bufsize[dev] > 128) 1639 capture_bufsize[dev] = 128; 1640 if ((err = snd_nm256_create(card, pci, 1641 playback_bufsize[dev] * 1024, /* in bytes */ 1642 capture_bufsize[dev] * 1024, /* in bytes */ 1643 force_ac97[dev], 1644 xbuffer_top, 1645 use_cache[dev], 1646 &chip)) < 0) { 1647 snd_card_free(card); 1648 return err; 1649 } 1650 1651 if (reset_workaround[dev]) { 1652 snd_printdd(KERN_INFO "nm256: reset_workaround activated\n"); 1653 chip->reset_workaround = 1; 1654 } 1655 1656 if ((err = snd_nm256_pcm(chip, 0)) < 0 || 1657 (err = snd_nm256_mixer(chip)) < 0) { 1658 snd_card_free(card); 1659 return err; 1660 } 1661 1662 sprintf(card->shortname, "NeoMagic %s", card->driver); 1663 sprintf(card->longname, "%s at 0x%lx & 0x%lx, irq %d", 1664 card->shortname, 1665 chip->buffer_addr, chip->cport_addr, chip->irq); 1666 1667 if ((err = snd_card_register(card)) < 0) { 1668 snd_card_free(card); 1669 return err; 1670 } 1671 1672 pci_set_drvdata(pci, card); 1673 dev++; 1674 return 0; 1675 } 1676 1677 static void __devexit snd_nm256_remove(struct pci_dev *pci) 1678 { 1679 snd_card_free(pci_get_drvdata(pci)); 1680 pci_set_drvdata(pci, NULL); 1681 } 1682 1683 1684 static struct pci_driver driver = { 1685 .name = "NeoMagic 256", 1686 .id_table = snd_nm256_ids, 1687 .probe = snd_nm256_probe, 1688 .remove = __devexit_p(snd_nm256_remove), 1689 SND_PCI_PM_CALLBACKS 1690 }; 1691 1692 1693 static int __init alsa_card_nm256_init(void) 1694 { 1695 return pci_register_driver(&driver); 1696 } 1697 1698 static void __exit alsa_card_nm256_exit(void) 1699 { 1700 pci_unregister_driver(&driver); 1701 } 1702 1703 module_init(alsa_card_nm256_init) 1704 module_exit(alsa_card_nm256_exit) 1705