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 <asm/io.h> 28#include <linux/delay.h> 29#include <linux/interrupt.h> 30#include <linux/init.h> 31#include <linux/pci.h> 32#include <linux/slab.h> 33#include <linux/moduleparam.h> 34#include <linux/mutex.h> 35 36#include <sound/core.h> 37#include <sound/info.h> 38#include <sound/control.h> 39#include <sound/pcm.h> 40#include <sound/ac97_codec.h> 41#include <sound/initval.h> 42 43#define CARD_NAME "NeoMagic 256AV/ZX" 44#define DRIVER_NAME "NM256" 45 46MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); 47MODULE_DESCRIPTION("NeoMagic NM256AV/ZX"); 48MODULE_LICENSE("GPL"); 49MODULE_SUPPORTED_DEVICE("{{NeoMagic,NM256AV}," 50 "{NeoMagic,NM256ZX}}"); 51 52/* 53 * some compile conditions. 54 */ 55 56static int index = SNDRV_DEFAULT_IDX1; /* Index */ 57static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ 58static int playback_bufsize = 16; 59static int capture_bufsize = 16; 60static int force_ac97; /* disabled as default */ 61static int buffer_top; /* not specified */ 62static int use_cache; /* disabled */ 63static int vaio_hack; /* disabled */ 64static int reset_workaround; 65static int reset_workaround_2; 66 67module_param(index, int, 0444); 68MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); 69module_param(id, charp, 0444); 70MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); 71module_param(playback_bufsize, int, 0444); 72MODULE_PARM_DESC(playback_bufsize, "DAC frame size in kB for " CARD_NAME " soundcard."); 73module_param(capture_bufsize, int, 0444); 74MODULE_PARM_DESC(capture_bufsize, "ADC frame size in kB for " CARD_NAME " soundcard."); 75module_param(force_ac97, bool, 0444); 76MODULE_PARM_DESC(force_ac97, "Force to use AC97 codec for " CARD_NAME " soundcard."); 77module_param(buffer_top, int, 0444); 78MODULE_PARM_DESC(buffer_top, "Set the top address of audio buffer for " CARD_NAME " soundcard."); 79module_param(use_cache, bool, 0444); 80MODULE_PARM_DESC(use_cache, "Enable the cache for coefficient table access."); 81module_param(vaio_hack, bool, 0444); 82MODULE_PARM_DESC(vaio_hack, "Enable workaround for Sony VAIO notebooks."); 83module_param(reset_workaround, bool, 0444); 84MODULE_PARM_DESC(reset_workaround, "Enable AC97 RESET workaround for some laptops."); 85module_param(reset_workaround_2, bool, 0444); 86MODULE_PARM_DESC(reset_workaround_2, "Enable extended AC97 RESET workaround for some other laptops."); 87 88/* just for backward compatibility */ 89static int enable; 90module_param(enable, bool, 0444); 91 92 93 94/* 95 * hw definitions 96 */ 97 98/* The BIOS signature. */ 99#define NM_SIGNATURE 0x4e4d0000 100/* Signature mask. */ 101#define NM_SIG_MASK 0xffff0000 102 103/* Size of the second memory area. */ 104#define NM_PORT2_SIZE 4096 105 106/* The base offset of the mixer in the second memory area. */ 107#define NM_MIXER_OFFSET 0x600 108 109/* The maximum size of a coefficient entry. */ 110#define NM_MAX_PLAYBACK_COEF_SIZE 0x5000 111#define NM_MAX_RECORD_COEF_SIZE 0x1260 112 113/* The interrupt register. */ 114#define NM_INT_REG 0xa04 115/* And its bits. */ 116#define NM_PLAYBACK_INT 0x40 117#define NM_RECORD_INT 0x100 118#define NM_MISC_INT_1 0x4000 119#define NM_MISC_INT_2 0x1 120#define NM_ACK_INT(chip, X) snd_nm256_writew(chip, NM_INT_REG, (X) << 1) 121 122/* The AV's "mixer ready" status bit and location. */ 123#define NM_MIXER_STATUS_OFFSET 0xa04 124#define NM_MIXER_READY_MASK 0x0800 125#define NM_MIXER_PRESENCE 0xa06 126#define NM_PRESENCE_MASK 0x0050 127#define NM_PRESENCE_VALUE 0x0040 128 129/* 130 * For the ZX. It uses the same interrupt register, but it holds 32 131 * bits instead of 16. 132 */ 133#define NM2_PLAYBACK_INT 0x10000 134#define NM2_RECORD_INT 0x80000 135#define NM2_MISC_INT_1 0x8 136#define NM2_MISC_INT_2 0x2 137#define NM2_ACK_INT(chip, X) snd_nm256_writel(chip, NM_INT_REG, (X)) 138 139/* The ZX's "mixer ready" status bit and location. */ 140#define NM2_MIXER_STATUS_OFFSET 0xa06 141#define NM2_MIXER_READY_MASK 0x0800 142 143/* The playback registers start from here. */ 144#define NM_PLAYBACK_REG_OFFSET 0x0 145/* The record registers start from here. */ 146#define NM_RECORD_REG_OFFSET 0x200 147 148/* The rate register is located 2 bytes from the start of the register area. */ 149#define NM_RATE_REG_OFFSET 2 150 151/* Mono/stereo flag, number of bits on playback, and rate mask. */ 152#define NM_RATE_STEREO 1 153#define NM_RATE_BITS_16 2 154#define NM_RATE_MASK 0xf0 155 156/* Playback enable register. */ 157#define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1) 158#define NM_PLAYBACK_ENABLE_FLAG 1 159#define NM_PLAYBACK_ONESHOT 2 160#define NM_PLAYBACK_FREERUN 4 161 162/* Mutes the audio output. */ 163#define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18) 164#define NM_AUDIO_MUTE_LEFT 0x8000 165#define NM_AUDIO_MUTE_RIGHT 0x0080 166 167/* Recording enable register. */ 168#define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0) 169#define NM_RECORD_ENABLE_FLAG 1 170#define NM_RECORD_FREERUN 2 171 172/* coefficient buffer pointer */ 173#define NM_COEFF_START_OFFSET 0x1c 174#define NM_COEFF_END_OFFSET 0x20 175 176/* DMA buffer offsets */ 177#define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4) 178#define NM_RBUFFER_END (NM_RECORD_REG_OFFSET + 0x10) 179#define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc) 180#define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8) 181 182#define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4) 183#define NM_PBUFFER_END (NM_PLAYBACK_REG_OFFSET + 0x14) 184#define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc) 185#define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8) 186 187struct nm256_stream { 188 189 struct nm256 *chip; 190 struct snd_pcm_substream *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 207struct nm256 { 208 209 struct snd_card *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; 229 unsigned int reset_workaround_2: 1; 230 unsigned int in_resume: 1; 231 232 int mixer_base; /* register offset of ac97 mixer */ 233 int mixer_status_offset; /* offset of mixer status reg. */ 234 int mixer_status_mask; /* bit mask to test the mixer status */ 235 236 int irq; 237 int irq_acks; 238 irq_handler_t interrupt; 239 int badintrcount; /* counter to check bogus interrupts */ 240 struct mutex irq_mutex; 241 242 struct nm256_stream streams[2]; 243 244 struct snd_ac97 *ac97; 245 unsigned short *ac97_regs; /* register caches, only for valid regs */ 246 247 struct snd_pcm *pcm; 248 249 struct pci_dev *pci; 250 251 spinlock_t reg_lock; 252 253}; 254 255 256/* 257 * include coefficient table 258 */ 259#include "nm256_coef.c" 260 261 262/* 263 * PCI ids 264 */ 265static DEFINE_PCI_DEVICE_TABLE(snd_nm256_ids) = { 266 {PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO), 0}, 267 {PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO), 0}, 268 {PCI_VDEVICE(NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO), 0}, 269 {0,}, 270}; 271 272MODULE_DEVICE_TABLE(pci, snd_nm256_ids); 273 274 275/* 276 * lowlvel stuffs 277 */ 278 279static inline u8 280snd_nm256_readb(struct nm256 *chip, int offset) 281{ 282 return readb(chip->cport + offset); 283} 284 285static inline u16 286snd_nm256_readw(struct nm256 *chip, int offset) 287{ 288 return readw(chip->cport + offset); 289} 290 291static inline u32 292snd_nm256_readl(struct nm256 *chip, int offset) 293{ 294 return readl(chip->cport + offset); 295} 296 297static inline void 298snd_nm256_writeb(struct nm256 *chip, int offset, u8 val) 299{ 300 writeb(val, chip->cport + offset); 301} 302 303static inline void 304snd_nm256_writew(struct nm256 *chip, int offset, u16 val) 305{ 306 writew(val, chip->cport + offset); 307} 308 309static inline void 310snd_nm256_writel(struct nm256 *chip, int offset, u32 val) 311{ 312 writel(val, chip->cport + offset); 313} 314 315static inline void 316snd_nm256_write_buffer(struct nm256 *chip, void *src, int offset, int size) 317{ 318 offset -= chip->buffer_start; 319#ifdef CONFIG_SND_DEBUG 320 if (offset < 0 || offset >= chip->buffer_size) { 321 snd_printk(KERN_ERR "write_buffer invalid offset = %d size = %d\n", 322 offset, size); 323 return; 324 } 325#endif 326 memcpy_toio(chip->buffer + offset, src, size); 327} 328 329/* 330 * coefficient handlers -- what a magic! 331 */ 332 333static u16 334snd_nm256_get_start_offset(int which) 335{ 336 u16 offset = 0; 337 while (which-- > 0) 338 offset += coefficient_sizes[which]; 339 return offset; 340} 341 342static void 343snd_nm256_load_one_coefficient(struct nm256 *chip, int stream, u32 port, int which) 344{ 345 u32 coeff_buf = chip->coeff_buf[stream]; 346 u16 offset = snd_nm256_get_start_offset(which); 347 u16 size = coefficient_sizes[which]; 348 349 snd_nm256_write_buffer(chip, coefficients + offset, coeff_buf, size); 350 snd_nm256_writel(chip, port, coeff_buf); 351 /* ??? Record seems to behave differently than playback. */ 352 if (stream == SNDRV_PCM_STREAM_PLAYBACK) 353 size--; 354 snd_nm256_writel(chip, port + 4, coeff_buf + size); 355} 356 357static void 358snd_nm256_load_coefficient(struct nm256 *chip, int stream, int number) 359{ 360 /* The enable register for the specified engine. */ 361 u32 poffset = (stream == SNDRV_PCM_STREAM_CAPTURE ? 362 NM_RECORD_ENABLE_REG : NM_PLAYBACK_ENABLE_REG); 363 u32 addr = NM_COEFF_START_OFFSET; 364 365 addr += (stream == SNDRV_PCM_STREAM_CAPTURE ? 366 NM_RECORD_REG_OFFSET : NM_PLAYBACK_REG_OFFSET); 367 368 if (snd_nm256_readb(chip, poffset) & 1) { 369 snd_printd("NM256: Engine was enabled while loading coefficients!\n"); 370 return; 371 } 372 373 /* The recording engine uses coefficient values 8-15. */ 374 number &= 7; 375 if (stream == SNDRV_PCM_STREAM_CAPTURE) 376 number += 8; 377 378 if (! chip->use_cache) { 379 snd_nm256_load_one_coefficient(chip, stream, addr, number); 380 return; 381 } 382 if (! chip->coeffs_current) { 383 snd_nm256_write_buffer(chip, coefficients, chip->all_coeff_buf, 384 NM_TOTAL_COEFF_COUNT * 4); 385 chip->coeffs_current = 1; 386 } else { 387 u32 base = chip->all_coeff_buf; 388 u32 offset = snd_nm256_get_start_offset(number); 389 u32 end_offset = offset + coefficient_sizes[number]; 390 snd_nm256_writel(chip, addr, base + offset); 391 if (stream == SNDRV_PCM_STREAM_PLAYBACK) 392 end_offset--; 393 snd_nm256_writel(chip, addr + 4, base + end_offset); 394 } 395} 396 397 398/* The actual rates supported by the card. */ 399static unsigned int samplerates[8] = { 400 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000, 401}; 402static struct snd_pcm_hw_constraint_list constraints_rates = { 403 .count = ARRAY_SIZE(samplerates), 404 .list = samplerates, 405 .mask = 0, 406}; 407 408/* 409 * return the index of the target rate 410 */ 411static int 412snd_nm256_fixed_rate(unsigned int rate) 413{ 414 unsigned int i; 415 for (i = 0; i < ARRAY_SIZE(samplerates); i++) { 416 if (rate == samplerates[i]) 417 return i; 418 } 419 snd_BUG(); 420 return 0; 421} 422 423/* 424 * set sample rate and format 425 */ 426static void 427snd_nm256_set_format(struct nm256 *chip, struct nm256_stream *s, 428 struct snd_pcm_substream *substream) 429{ 430 struct snd_pcm_runtime *runtime = substream->runtime; 431 int rate_index = snd_nm256_fixed_rate(runtime->rate); 432 unsigned char ratebits = (rate_index << 4) & NM_RATE_MASK; 433 434 s->shift = 0; 435 if (snd_pcm_format_width(runtime->format) == 16) { 436 ratebits |= NM_RATE_BITS_16; 437 s->shift++; 438 } 439 if (runtime->channels > 1) { 440 ratebits |= NM_RATE_STEREO; 441 s->shift++; 442 } 443 444 runtime->rate = samplerates[rate_index]; 445 446 switch (substream->stream) { 447 case SNDRV_PCM_STREAM_PLAYBACK: 448 snd_nm256_load_coefficient(chip, 0, rate_index); /* 0 = playback */ 449 snd_nm256_writeb(chip, 450 NM_PLAYBACK_REG_OFFSET + NM_RATE_REG_OFFSET, 451 ratebits); 452 break; 453 case SNDRV_PCM_STREAM_CAPTURE: 454 snd_nm256_load_coefficient(chip, 1, rate_index); /* 1 = record */ 455 snd_nm256_writeb(chip, 456 NM_RECORD_REG_OFFSET + NM_RATE_REG_OFFSET, 457 ratebits); 458 break; 459 } 460} 461 462/* acquire interrupt */ 463static int snd_nm256_acquire_irq(struct nm256 *chip) 464{ 465 mutex_lock(&chip->irq_mutex); 466 if (chip->irq < 0) { 467 if (request_irq(chip->pci->irq, chip->interrupt, IRQF_SHARED, 468 chip->card->driver, chip)) { 469 snd_printk(KERN_ERR "unable to grab IRQ %d\n", chip->pci->irq); 470 mutex_unlock(&chip->irq_mutex); 471 return -EBUSY; 472 } 473 chip->irq = chip->pci->irq; 474 } 475 chip->irq_acks++; 476 mutex_unlock(&chip->irq_mutex); 477 return 0; 478} 479 480/* release interrupt */ 481static void snd_nm256_release_irq(struct nm256 *chip) 482{ 483 mutex_lock(&chip->irq_mutex); 484 if (chip->irq_acks > 0) 485 chip->irq_acks--; 486 if (chip->irq_acks == 0 && chip->irq >= 0) { 487 free_irq(chip->irq, chip); 488 chip->irq = -1; 489 } 490 mutex_unlock(&chip->irq_mutex); 491} 492 493/* 494 * start / stop 495 */ 496 497/* update the watermark (current period) */ 498static void snd_nm256_pcm_mark(struct nm256 *chip, struct nm256_stream *s, int reg) 499{ 500 s->cur_period++; 501 s->cur_period %= s->periods; 502 snd_nm256_writel(chip, reg, s->buf + s->cur_period * s->period_size); 503} 504 505#define snd_nm256_playback_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_PBUFFER_WMARK) 506#define snd_nm256_capture_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_RBUFFER_WMARK) 507 508static void 509snd_nm256_playback_start(struct nm256 *chip, struct nm256_stream *s, 510 struct snd_pcm_substream *substream) 511{ 512 /* program buffer pointers */ 513 snd_nm256_writel(chip, NM_PBUFFER_START, s->buf); 514 snd_nm256_writel(chip, NM_PBUFFER_END, s->buf + s->dma_size - (1 << s->shift)); 515 snd_nm256_writel(chip, NM_PBUFFER_CURRP, s->buf); 516 snd_nm256_playback_mark(chip, s); 517 518 /* Enable playback engine and interrupts. */ 519 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 520 NM_PLAYBACK_ENABLE_FLAG | NM_PLAYBACK_FREERUN); 521 /* Enable both channels. */ 522 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0); 523} 524 525static void 526snd_nm256_capture_start(struct nm256 *chip, struct nm256_stream *s, 527 struct snd_pcm_substream *substream) 528{ 529 /* program buffer pointers */ 530 snd_nm256_writel(chip, NM_RBUFFER_START, s->buf); 531 snd_nm256_writel(chip, NM_RBUFFER_END, s->buf + s->dma_size); 532 snd_nm256_writel(chip, NM_RBUFFER_CURRP, s->buf); 533 snd_nm256_capture_mark(chip, s); 534 535 /* Enable playback engine and interrupts. */ 536 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 537 NM_RECORD_ENABLE_FLAG | NM_RECORD_FREERUN); 538} 539 540/* Stop the play engine. */ 541static void 542snd_nm256_playback_stop(struct nm256 *chip) 543{ 544 /* Shut off sound from both channels. */ 545 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 546 NM_AUDIO_MUTE_LEFT | NM_AUDIO_MUTE_RIGHT); 547 /* Disable play engine. */ 548 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 0); 549} 550 551static void 552snd_nm256_capture_stop(struct nm256 *chip) 553{ 554 /* Disable recording engine. */ 555 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 0); 556} 557 558static int 559snd_nm256_playback_trigger(struct snd_pcm_substream *substream, int cmd) 560{ 561 struct nm256 *chip = snd_pcm_substream_chip(substream); 562 struct nm256_stream *s = substream->runtime->private_data; 563 int err = 0; 564 565 if (snd_BUG_ON(!s)) 566 return -ENXIO; 567 568 spin_lock(&chip->reg_lock); 569 switch (cmd) { 570 case SNDRV_PCM_TRIGGER_RESUME: 571 s->suspended = 0; 572 /* fallthru */ 573 case SNDRV_PCM_TRIGGER_START: 574 if (! s->running) { 575 snd_nm256_playback_start(chip, s, substream); 576 s->running = 1; 577 } 578 break; 579 case SNDRV_PCM_TRIGGER_SUSPEND: 580 s->suspended = 1; 581 /* fallthru */ 582 case SNDRV_PCM_TRIGGER_STOP: 583 if (s->running) { 584 snd_nm256_playback_stop(chip); 585 s->running = 0; 586 } 587 break; 588 default: 589 err = -EINVAL; 590 break; 591 } 592 spin_unlock(&chip->reg_lock); 593 return err; 594} 595 596static int 597snd_nm256_capture_trigger(struct snd_pcm_substream *substream, int cmd) 598{ 599 struct nm256 *chip = snd_pcm_substream_chip(substream); 600 struct nm256_stream *s = substream->runtime->private_data; 601 int err = 0; 602 603 if (snd_BUG_ON(!s)) 604 return -ENXIO; 605 606 spin_lock(&chip->reg_lock); 607 switch (cmd) { 608 case SNDRV_PCM_TRIGGER_START: 609 case SNDRV_PCM_TRIGGER_RESUME: 610 if (! s->running) { 611 snd_nm256_capture_start(chip, s, substream); 612 s->running = 1; 613 } 614 break; 615 case SNDRV_PCM_TRIGGER_STOP: 616 case SNDRV_PCM_TRIGGER_SUSPEND: 617 if (s->running) { 618 snd_nm256_capture_stop(chip); 619 s->running = 0; 620 } 621 break; 622 default: 623 err = -EINVAL; 624 break; 625 } 626 spin_unlock(&chip->reg_lock); 627 return err; 628} 629 630 631/* 632 * prepare playback/capture channel 633 */ 634static int snd_nm256_pcm_prepare(struct snd_pcm_substream *substream) 635{ 636 struct nm256 *chip = snd_pcm_substream_chip(substream); 637 struct snd_pcm_runtime *runtime = substream->runtime; 638 struct nm256_stream *s = runtime->private_data; 639 640 if (snd_BUG_ON(!s)) 641 return -ENXIO; 642 s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size); 643 s->period_size = frames_to_bytes(runtime, substream->runtime->period_size); 644 s->periods = substream->runtime->periods; 645 s->cur_period = 0; 646 647 spin_lock_irq(&chip->reg_lock); 648 s->running = 0; 649 snd_nm256_set_format(chip, s, substream); 650 spin_unlock_irq(&chip->reg_lock); 651 652 return 0; 653} 654 655 656/* 657 * get the current pointer 658 */ 659static snd_pcm_uframes_t 660snd_nm256_playback_pointer(struct snd_pcm_substream *substream) 661{ 662 struct nm256 *chip = snd_pcm_substream_chip(substream); 663 struct nm256_stream *s = substream->runtime->private_data; 664 unsigned long curp; 665 666 if (snd_BUG_ON(!s)) 667 return 0; 668 curp = snd_nm256_readl(chip, NM_PBUFFER_CURRP) - (unsigned long)s->buf; 669 curp %= s->dma_size; 670 return bytes_to_frames(substream->runtime, curp); 671} 672 673static snd_pcm_uframes_t 674snd_nm256_capture_pointer(struct snd_pcm_substream *substream) 675{ 676 struct nm256 *chip = snd_pcm_substream_chip(substream); 677 struct nm256_stream *s = substream->runtime->private_data; 678 unsigned long curp; 679 680 if (snd_BUG_ON(!s)) 681 return 0; 682 curp = snd_nm256_readl(chip, NM_RBUFFER_CURRP) - (unsigned long)s->buf; 683 curp %= s->dma_size; 684 return bytes_to_frames(substream->runtime, curp); 685} 686 687/* Remapped I/O space can be accessible as pointer on i386 */ 688/* This might be changed in the future */ 689#ifndef __i386__ 690/* 691 * silence / copy for playback 692 */ 693static int 694snd_nm256_playback_silence(struct snd_pcm_substream *substream, 695 int channel, /* not used (interleaved data) */ 696 snd_pcm_uframes_t pos, 697 snd_pcm_uframes_t count) 698{ 699 struct snd_pcm_runtime *runtime = substream->runtime; 700 struct nm256_stream *s = runtime->private_data; 701 count = frames_to_bytes(runtime, count); 702 pos = frames_to_bytes(runtime, pos); 703 memset_io(s->bufptr + pos, 0, count); 704 return 0; 705} 706 707static int 708snd_nm256_playback_copy(struct snd_pcm_substream *substream, 709 int channel, /* not used (interleaved data) */ 710 snd_pcm_uframes_t pos, 711 void __user *src, 712 snd_pcm_uframes_t count) 713{ 714 struct snd_pcm_runtime *runtime = substream->runtime; 715 struct nm256_stream *s = runtime->private_data; 716 count = frames_to_bytes(runtime, count); 717 pos = frames_to_bytes(runtime, pos); 718 if (copy_from_user_toio(s->bufptr + pos, src, count)) 719 return -EFAULT; 720 return 0; 721} 722 723/* 724 * copy to user 725 */ 726static int 727snd_nm256_capture_copy(struct snd_pcm_substream *substream, 728 int channel, /* not used (interleaved data) */ 729 snd_pcm_uframes_t pos, 730 void __user *dst, 731 snd_pcm_uframes_t count) 732{ 733 struct snd_pcm_runtime *runtime = substream->runtime; 734 struct nm256_stream *s = runtime->private_data; 735 count = frames_to_bytes(runtime, count); 736 pos = frames_to_bytes(runtime, pos); 737 if (copy_to_user_fromio(dst, s->bufptr + pos, count)) 738 return -EFAULT; 739 return 0; 740} 741 742#endif /* !__i386__ */ 743 744 745/* 746 * update playback/capture watermarks 747 */ 748 749/* spinlock held! */ 750static void 751snd_nm256_playback_update(struct nm256 *chip) 752{ 753 struct nm256_stream *s; 754 755 s = &chip->streams[SNDRV_PCM_STREAM_PLAYBACK]; 756 if (s->running && s->substream) { 757 spin_unlock(&chip->reg_lock); 758 snd_pcm_period_elapsed(s->substream); 759 spin_lock(&chip->reg_lock); 760 snd_nm256_playback_mark(chip, s); 761 } 762} 763 764/* spinlock held! */ 765static void 766snd_nm256_capture_update(struct nm256 *chip) 767{ 768 struct nm256_stream *s; 769 770 s = &chip->streams[SNDRV_PCM_STREAM_CAPTURE]; 771 if (s->running && s->substream) { 772 spin_unlock(&chip->reg_lock); 773 snd_pcm_period_elapsed(s->substream); 774 spin_lock(&chip->reg_lock); 775 snd_nm256_capture_mark(chip, s); 776 } 777} 778 779/* 780 * hardware info 781 */ 782static struct snd_pcm_hardware snd_nm256_playback = 783{ 784 .info = SNDRV_PCM_INFO_MMAP_IOMEM |SNDRV_PCM_INFO_MMAP_VALID | 785 SNDRV_PCM_INFO_INTERLEAVED | 786 /*SNDRV_PCM_INFO_PAUSE |*/ 787 SNDRV_PCM_INFO_RESUME, 788 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 789 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000, 790 .rate_min = 8000, 791 .rate_max = 48000, 792 .channels_min = 1, 793 .channels_max = 2, 794 .periods_min = 2, 795 .periods_max = 1024, 796 .buffer_bytes_max = 128 * 1024, 797 .period_bytes_min = 256, 798 .period_bytes_max = 128 * 1024, 799}; 800 801static struct snd_pcm_hardware snd_nm256_capture = 802{ 803 .info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID | 804 SNDRV_PCM_INFO_INTERLEAVED | 805 /*SNDRV_PCM_INFO_PAUSE |*/ 806 SNDRV_PCM_INFO_RESUME, 807 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 808 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000, 809 .rate_min = 8000, 810 .rate_max = 48000, 811 .channels_min = 1, 812 .channels_max = 2, 813 .periods_min = 2, 814 .periods_max = 1024, 815 .buffer_bytes_max = 128 * 1024, 816 .period_bytes_min = 256, 817 .period_bytes_max = 128 * 1024, 818}; 819 820 821/* set dma transfer size */ 822static int snd_nm256_pcm_hw_params(struct snd_pcm_substream *substream, 823 struct snd_pcm_hw_params *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 */ 833static void snd_nm256_setup_stream(struct nm256 *chip, struct nm256_stream *s, 834 struct snd_pcm_substream *substream, 835 struct snd_pcm_hardware *hw_ptr) 836{ 837 struct snd_pcm_runtime *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 __force *) 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_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 850 &constraints_rates); 851} 852 853static int 854snd_nm256_playback_open(struct snd_pcm_substream *substream) 855{ 856 struct nm256 *chip = snd_pcm_substream_chip(substream); 857 858 if (snd_nm256_acquire_irq(chip) < 0) 859 return -EBUSY; 860 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK], 861 substream, &snd_nm256_playback); 862 return 0; 863} 864 865static int 866snd_nm256_capture_open(struct snd_pcm_substream *substream) 867{ 868 struct nm256 *chip = snd_pcm_substream_chip(substream); 869 870 if (snd_nm256_acquire_irq(chip) < 0) 871 return -EBUSY; 872 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_CAPTURE], 873 substream, &snd_nm256_capture); 874 return 0; 875} 876 877/* 878 * close - we don't have to do special.. 879 */ 880static int 881snd_nm256_playback_close(struct snd_pcm_substream *substream) 882{ 883 struct nm256 *chip = snd_pcm_substream_chip(substream); 884 885 snd_nm256_release_irq(chip); 886 return 0; 887} 888 889 890static int 891snd_nm256_capture_close(struct snd_pcm_substream *substream) 892{ 893 struct nm256 *chip = snd_pcm_substream_chip(substream); 894 895 snd_nm256_release_irq(chip); 896 return 0; 897} 898 899/* 900 * create a pcm instance 901 */ 902static struct snd_pcm_ops snd_nm256_playback_ops = { 903 .open = snd_nm256_playback_open, 904 .close = snd_nm256_playback_close, 905 .ioctl = snd_pcm_lib_ioctl, 906 .hw_params = snd_nm256_pcm_hw_params, 907 .prepare = snd_nm256_pcm_prepare, 908 .trigger = snd_nm256_playback_trigger, 909 .pointer = snd_nm256_playback_pointer, 910#ifndef __i386__ 911 .copy = snd_nm256_playback_copy, 912 .silence = snd_nm256_playback_silence, 913#endif 914 .mmap = snd_pcm_lib_mmap_iomem, 915}; 916 917static struct snd_pcm_ops snd_nm256_capture_ops = { 918 .open = snd_nm256_capture_open, 919 .close = snd_nm256_capture_close, 920 .ioctl = snd_pcm_lib_ioctl, 921 .hw_params = snd_nm256_pcm_hw_params, 922 .prepare = snd_nm256_pcm_prepare, 923 .trigger = snd_nm256_capture_trigger, 924 .pointer = snd_nm256_capture_pointer, 925#ifndef __i386__ 926 .copy = snd_nm256_capture_copy, 927#endif 928 .mmap = snd_pcm_lib_mmap_iomem, 929}; 930 931static int __devinit 932snd_nm256_pcm(struct nm256 *chip, int device) 933{ 934 struct snd_pcm *pcm; 935 int i, err; 936 937 for (i = 0; i < 2; i++) { 938 struct nm256_stream *s = &chip->streams[i]; 939 s->bufptr = chip->buffer + (s->buf - chip->buffer_start); 940 s->bufptr_addr = chip->buffer_addr + (s->buf - chip->buffer_start); 941 } 942 943 err = snd_pcm_new(chip->card, chip->card->driver, device, 944 1, 1, &pcm); 945 if (err < 0) 946 return err; 947 948 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_nm256_playback_ops); 949 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_nm256_capture_ops); 950 951 pcm->private_data = chip; 952 pcm->info_flags = 0; 953 chip->pcm = pcm; 954 955 return 0; 956} 957 958 959/* 960 * Initialize the hardware. 961 */ 962static void 963snd_nm256_init_chip(struct nm256 *chip) 964{ 965 /* Reset everything. */ 966 snd_nm256_writeb(chip, 0x0, 0x11); 967 snd_nm256_writew(chip, 0x214, 0); 968 /* stop sounds.. */ 969 //snd_nm256_playback_stop(chip); 970 //snd_nm256_capture_stop(chip); 971} 972 973 974static irqreturn_t 975snd_nm256_intr_check(struct nm256 *chip) 976{ 977 if (chip->badintrcount++ > 1000) { 978 /* 979 * I'm not sure if the best thing is to stop the card from 980 * playing or just release the interrupt (after all, we're in 981 * a bad situation, so doing fancy stuff may not be such a good 982 * idea). 983 * 984 * I worry about the card engine continuing to play noise 985 * over and over, however--that could become a very 986 * obnoxious problem. And we know that when this usually 987 * happens things are fairly safe, it just means the user's 988 * inserted a PCMCIA card and someone's spamming us with IRQ 9s. 989 */ 990 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running) 991 snd_nm256_playback_stop(chip); 992 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running) 993 snd_nm256_capture_stop(chip); 994 chip->badintrcount = 0; 995 return IRQ_HANDLED; 996 } 997 return IRQ_NONE; 998} 999 1000/* 1001 * Handle a potential interrupt for the device referred to by DEV_ID. 1002 * 1003 * I don't like the cut-n-paste job here either between the two routines, 1004 * but there are sufficient differences between the two interrupt handlers 1005 * that parameterizing it isn't all that great either. (Could use a macro, 1006 * I suppose...yucky bleah.) 1007 */ 1008 1009static irqreturn_t 1010snd_nm256_interrupt(int irq, void *dev_id) 1011{ 1012 struct nm256 *chip = dev_id; 1013 u16 status; 1014 u8 cbyte; 1015 1016 status = snd_nm256_readw(chip, NM_INT_REG); 1017 1018 /* Not ours. */ 1019 if (status == 0) 1020 return snd_nm256_intr_check(chip); 1021 1022 chip->badintrcount = 0; 1023 1024 /* Rather boring; check for individual interrupts and process them. */ 1025 1026 spin_lock(&chip->reg_lock); 1027 if (status & NM_PLAYBACK_INT) { 1028 status &= ~NM_PLAYBACK_INT; 1029 NM_ACK_INT(chip, NM_PLAYBACK_INT); 1030 snd_nm256_playback_update(chip); 1031 } 1032 1033 if (status & NM_RECORD_INT) { 1034 status &= ~NM_RECORD_INT; 1035 NM_ACK_INT(chip, NM_RECORD_INT); 1036 snd_nm256_capture_update(chip); 1037 } 1038 1039 if (status & NM_MISC_INT_1) { 1040 status &= ~NM_MISC_INT_1; 1041 NM_ACK_INT(chip, NM_MISC_INT_1); 1042 snd_printd("NM256: Got misc interrupt #1\n"); 1043 snd_nm256_writew(chip, NM_INT_REG, 0x8000); 1044 cbyte = snd_nm256_readb(chip, 0x400); 1045 snd_nm256_writeb(chip, 0x400, cbyte | 2); 1046 } 1047 1048 if (status & NM_MISC_INT_2) { 1049 status &= ~NM_MISC_INT_2; 1050 NM_ACK_INT(chip, NM_MISC_INT_2); 1051 snd_printd("NM256: Got misc interrupt #2\n"); 1052 cbyte = snd_nm256_readb(chip, 0x400); 1053 snd_nm256_writeb(chip, 0x400, cbyte & ~2); 1054 } 1055 1056 /* Unknown interrupt. */ 1057 if (status) { 1058 snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n", 1059 status); 1060 /* Pray. */ 1061 NM_ACK_INT(chip, status); 1062 } 1063 1064 spin_unlock(&chip->reg_lock); 1065 return IRQ_HANDLED; 1066} 1067 1068/* 1069 * Handle a potential interrupt for the device referred to by DEV_ID. 1070 * This handler is for the 256ZX, and is very similar to the non-ZX 1071 * routine. 1072 */ 1073 1074static irqreturn_t 1075snd_nm256_interrupt_zx(int irq, void *dev_id) 1076{ 1077 struct nm256 *chip = dev_id; 1078 u32 status; 1079 u8 cbyte; 1080 1081 status = snd_nm256_readl(chip, NM_INT_REG); 1082 1083 /* Not ours. */ 1084 if (status == 0) 1085 return snd_nm256_intr_check(chip); 1086 1087 chip->badintrcount = 0; 1088 1089 /* Rather boring; check for individual interrupts and process them. */ 1090 1091 spin_lock(&chip->reg_lock); 1092 if (status & NM2_PLAYBACK_INT) { 1093 status &= ~NM2_PLAYBACK_INT; 1094 NM2_ACK_INT(chip, NM2_PLAYBACK_INT); 1095 snd_nm256_playback_update(chip); 1096 } 1097 1098 if (status & NM2_RECORD_INT) { 1099 status &= ~NM2_RECORD_INT; 1100 NM2_ACK_INT(chip, NM2_RECORD_INT); 1101 snd_nm256_capture_update(chip); 1102 } 1103 1104 if (status & NM2_MISC_INT_1) { 1105 status &= ~NM2_MISC_INT_1; 1106 NM2_ACK_INT(chip, NM2_MISC_INT_1); 1107 snd_printd("NM256: Got misc interrupt #1\n"); 1108 cbyte = snd_nm256_readb(chip, 0x400); 1109 snd_nm256_writeb(chip, 0x400, cbyte | 2); 1110 } 1111 1112 if (status & NM2_MISC_INT_2) { 1113 status &= ~NM2_MISC_INT_2; 1114 NM2_ACK_INT(chip, NM2_MISC_INT_2); 1115 snd_printd("NM256: Got misc interrupt #2\n"); 1116 cbyte = snd_nm256_readb(chip, 0x400); 1117 snd_nm256_writeb(chip, 0x400, cbyte & ~2); 1118 } 1119 1120 /* Unknown interrupt. */ 1121 if (status) { 1122 snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n", 1123 status); 1124 /* Pray. */ 1125 NM2_ACK_INT(chip, status); 1126 } 1127 1128 spin_unlock(&chip->reg_lock); 1129 return IRQ_HANDLED; 1130} 1131 1132/* 1133 * AC97 interface 1134 */ 1135 1136/* 1137 * Waits for the mixer to become ready to be written; returns a zero value 1138 * if it timed out. 1139 */ 1140static int 1141snd_nm256_ac97_ready(struct nm256 *chip) 1142{ 1143 int timeout = 10; 1144 u32 testaddr; 1145 u16 testb; 1146 1147 testaddr = chip->mixer_status_offset; 1148 testb = chip->mixer_status_mask; 1149 1150 /* 1151 * Loop around waiting for the mixer to become ready. 1152 */ 1153 while (timeout-- > 0) { 1154 if ((snd_nm256_readw(chip, testaddr) & testb) == 0) 1155 return 1; 1156 udelay(100); 1157 } 1158 return 0; 1159} 1160 1161/* 1162 * Initial register values to be written to the AC97 mixer. 1163 * While most of these are identical to the reset values, we do this 1164 * so that we have most of the register contents cached--this avoids 1165 * reading from the mixer directly (which seems to be problematic, 1166 * probably due to ignorance). 1167 */ 1168 1169struct initialValues { 1170 unsigned short reg; 1171 unsigned short value; 1172}; 1173 1174static struct initialValues nm256_ac97_init_val[] = 1175{ 1176 { AC97_MASTER, 0x8000 }, 1177 { AC97_HEADPHONE, 0x8000 }, 1178 { AC97_MASTER_MONO, 0x8000 }, 1179 { AC97_PC_BEEP, 0x8000 }, 1180 { AC97_PHONE, 0x8008 }, 1181 { AC97_MIC, 0x8000 }, 1182 { AC97_LINE, 0x8808 }, 1183 { AC97_CD, 0x8808 }, 1184 { AC97_VIDEO, 0x8808 }, 1185 { AC97_AUX, 0x8808 }, 1186 { AC97_PCM, 0x8808 }, 1187 { AC97_REC_SEL, 0x0000 }, 1188 { AC97_REC_GAIN, 0x0B0B }, 1189 { AC97_GENERAL_PURPOSE, 0x0000 }, 1190 { AC97_3D_CONTROL, 0x8000 }, 1191 { AC97_VENDOR_ID1, 0x8384 }, 1192 { AC97_VENDOR_ID2, 0x7609 }, 1193}; 1194 1195static int nm256_ac97_idx(unsigned short reg) 1196{ 1197 int i; 1198 for (i = 0; i < ARRAY_SIZE(nm256_ac97_init_val); i++) 1199 if (nm256_ac97_init_val[i].reg == reg) 1200 return i; 1201 return -1; 1202} 1203 1204/* 1205 * some nm256 easily crash when reading from mixer registers 1206 * thus we're treating it as a write-only mixer and cache the 1207 * written values 1208 */ 1209static unsigned short 1210snd_nm256_ac97_read(struct snd_ac97 *ac97, unsigned short reg) 1211{ 1212 struct nm256 *chip = ac97->private_data; 1213 int idx = nm256_ac97_idx(reg); 1214 1215 if (idx < 0) 1216 return 0; 1217 return chip->ac97_regs[idx]; 1218} 1219 1220/* 1221 */ 1222static void 1223snd_nm256_ac97_write(struct snd_ac97 *ac97, 1224 unsigned short reg, unsigned short val) 1225{ 1226 struct nm256 *chip = ac97->private_data; 1227 int tries = 2; 1228 int idx = nm256_ac97_idx(reg); 1229 u32 base; 1230 1231 if (idx < 0) 1232 return; 1233 1234 base = chip->mixer_base; 1235 1236 snd_nm256_ac97_ready(chip); 1237 1238 /* Wait for the write to take, too. */ 1239 while (tries-- > 0) { 1240 snd_nm256_writew(chip, base + reg, val); 1241 msleep(1); /* a little delay here seems better.. */ 1242 if (snd_nm256_ac97_ready(chip)) { 1243 /* successful write: set cache */ 1244 chip->ac97_regs[idx] = val; 1245 return; 1246 } 1247 } 1248 snd_printd("nm256: ac97 codec not ready..\n"); 1249} 1250 1251/* static resolution table */ 1252static struct snd_ac97_res_table nm256_res_table[] = { 1253 { AC97_MASTER, 0x1f1f }, 1254 { AC97_HEADPHONE, 0x1f1f }, 1255 { AC97_MASTER_MONO, 0x001f }, 1256 { AC97_PC_BEEP, 0x001f }, 1257 { AC97_PHONE, 0x001f }, 1258 { AC97_MIC, 0x001f }, 1259 { AC97_LINE, 0x1f1f }, 1260 { AC97_CD, 0x1f1f }, 1261 { AC97_VIDEO, 0x1f1f }, 1262 { AC97_AUX, 0x1f1f }, 1263 { AC97_PCM, 0x1f1f }, 1264 { AC97_REC_GAIN, 0x0f0f }, 1265 { } /* terminator */ 1266}; 1267 1268/* initialize the ac97 into a known state */ 1269static void 1270snd_nm256_ac97_reset(struct snd_ac97 *ac97) 1271{ 1272 struct nm256 *chip = ac97->private_data; 1273 1274 /* Reset the mixer. 'Tis magic! */ 1275 snd_nm256_writeb(chip, 0x6c0, 1); 1276 if (! chip->reset_workaround) { 1277 /* Dell latitude LS will lock up by this */ 1278 snd_nm256_writeb(chip, 0x6cc, 0x87); 1279 } 1280 if (! chip->reset_workaround_2) { 1281 /* Dell latitude CSx will lock up by this */ 1282 snd_nm256_writeb(chip, 0x6cc, 0x80); 1283 snd_nm256_writeb(chip, 0x6cc, 0x0); 1284 } 1285 if (! chip->in_resume) { 1286 int i; 1287 for (i = 0; i < ARRAY_SIZE(nm256_ac97_init_val); i++) { 1288 /* preload the cache, so as to avoid even a single 1289 * read of the mixer regs 1290 */ 1291 snd_nm256_ac97_write(ac97, nm256_ac97_init_val[i].reg, 1292 nm256_ac97_init_val[i].value); 1293 } 1294 } 1295} 1296 1297/* create an ac97 mixer interface */ 1298static int __devinit 1299snd_nm256_mixer(struct nm256 *chip) 1300{ 1301 struct snd_ac97_bus *pbus; 1302 struct snd_ac97_template ac97; 1303 int err; 1304 static struct snd_ac97_bus_ops ops = { 1305 .reset = snd_nm256_ac97_reset, 1306 .write = snd_nm256_ac97_write, 1307 .read = snd_nm256_ac97_read, 1308 }; 1309 1310 chip->ac97_regs = kcalloc(ARRAY_SIZE(nm256_ac97_init_val), 1311 sizeof(short), GFP_KERNEL); 1312 if (! chip->ac97_regs) 1313 return -ENOMEM; 1314 1315 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0) 1316 return err; 1317 1318 memset(&ac97, 0, sizeof(ac97)); 1319 ac97.scaps = AC97_SCAP_AUDIO; /* we support audio! */ 1320 ac97.private_data = chip; 1321 ac97.res_table = nm256_res_table; 1322 pbus->no_vra = 1; 1323 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97); 1324 if (err < 0) 1325 return err; 1326 if (! (chip->ac97->id & (0xf0000000))) { 1327 /* looks like an invalid id */ 1328 sprintf(chip->card->mixername, "%s AC97", chip->card->driver); 1329 } 1330 return 0; 1331} 1332 1333/* 1334 * See if the signature left by the NM256 BIOS is intact; if so, we use 1335 * the associated address as the end of our audio buffer in the video 1336 * RAM. 1337 */ 1338 1339static int __devinit 1340snd_nm256_peek_for_sig(struct nm256 *chip) 1341{ 1342 /* The signature is located 1K below the end of video RAM. */ 1343 void __iomem *temp; 1344 /* Default buffer end is 5120 bytes below the top of RAM. */ 1345 unsigned long pointer_found = chip->buffer_end - 0x1400; 1346 u32 sig; 1347 1348 temp = ioremap_nocache(chip->buffer_addr + chip->buffer_end - 0x400, 16); 1349 if (temp == NULL) { 1350 snd_printk(KERN_ERR "Unable to scan for card signature in video RAM\n"); 1351 return -EBUSY; 1352 } 1353 1354 sig = readl(temp); 1355 if ((sig & NM_SIG_MASK) == NM_SIGNATURE) { 1356 u32 pointer = readl(temp + 4); 1357 1358 /* 1359 * If it's obviously invalid, don't use it 1360 */ 1361 if (pointer == 0xffffffff || 1362 pointer < chip->buffer_size || 1363 pointer > chip->buffer_end) { 1364 snd_printk(KERN_ERR "invalid signature found: 0x%x\n", pointer); 1365 iounmap(temp); 1366 return -ENODEV; 1367 } else { 1368 pointer_found = pointer; 1369 printk(KERN_INFO "nm256: found card signature in video RAM: 0x%x\n", 1370 pointer); 1371 } 1372 } 1373 1374 iounmap(temp); 1375 chip->buffer_end = pointer_found; 1376 1377 return 0; 1378} 1379 1380#ifdef CONFIG_PM 1381/* 1382 * APM event handler, so the card is properly reinitialized after a power 1383 * event. 1384 */ 1385static int nm256_suspend(struct pci_dev *pci, pm_message_t state) 1386{ 1387 struct snd_card *card = pci_get_drvdata(pci); 1388 struct nm256 *chip = card->private_data; 1389 1390 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1391 snd_pcm_suspend_all(chip->pcm); 1392 snd_ac97_suspend(chip->ac97); 1393 chip->coeffs_current = 0; 1394 pci_disable_device(pci); 1395 pci_save_state(pci); 1396 pci_set_power_state(pci, pci_choose_state(pci, state)); 1397 return 0; 1398} 1399 1400static int nm256_resume(struct pci_dev *pci) 1401{ 1402 struct snd_card *card = pci_get_drvdata(pci); 1403 struct nm256 *chip = card->private_data; 1404 int i; 1405 1406 /* Perform a full reset on the hardware */ 1407 chip->in_resume = 1; 1408 1409 pci_set_power_state(pci, PCI_D0); 1410 pci_restore_state(pci); 1411 if (pci_enable_device(pci) < 0) { 1412 printk(KERN_ERR "nm256: pci_enable_device failed, " 1413 "disabling device\n"); 1414 snd_card_disconnect(card); 1415 return -EIO; 1416 } 1417 pci_set_master(pci); 1418 1419 snd_nm256_init_chip(chip); 1420 1421 /* restore ac97 */ 1422 snd_ac97_resume(chip->ac97); 1423 1424 for (i = 0; i < 2; i++) { 1425 struct nm256_stream *s = &chip->streams[i]; 1426 if (s->substream && s->suspended) { 1427 spin_lock_irq(&chip->reg_lock); 1428 snd_nm256_set_format(chip, s, s->substream); 1429 spin_unlock_irq(&chip->reg_lock); 1430 } 1431 } 1432 1433 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1434 chip->in_resume = 0; 1435 return 0; 1436} 1437#endif /* CONFIG_PM */ 1438 1439static int snd_nm256_free(struct nm256 *chip) 1440{ 1441 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running) 1442 snd_nm256_playback_stop(chip); 1443 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running) 1444 snd_nm256_capture_stop(chip); 1445 1446 if (chip->irq >= 0) 1447 free_irq(chip->irq, chip); 1448 1449 if (chip->cport) 1450 iounmap(chip->cport); 1451 if (chip->buffer) 1452 iounmap(chip->buffer); 1453 release_and_free_resource(chip->res_cport); 1454 release_and_free_resource(chip->res_buffer); 1455 1456 pci_disable_device(chip->pci); 1457 kfree(chip->ac97_regs); 1458 kfree(chip); 1459 return 0; 1460} 1461 1462static int snd_nm256_dev_free(struct snd_device *device) 1463{ 1464 struct nm256 *chip = device->device_data; 1465 return snd_nm256_free(chip); 1466} 1467 1468static int __devinit 1469snd_nm256_create(struct snd_card *card, struct pci_dev *pci, 1470 struct nm256 **chip_ret) 1471{ 1472 struct nm256 *chip; 1473 int err, pval; 1474 static struct snd_device_ops ops = { 1475 .dev_free = snd_nm256_dev_free, 1476 }; 1477 u32 addr; 1478 1479 *chip_ret = NULL; 1480 1481 if ((err = pci_enable_device(pci)) < 0) 1482 return err; 1483 1484 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 1485 if (chip == NULL) { 1486 pci_disable_device(pci); 1487 return -ENOMEM; 1488 } 1489 1490 chip->card = card; 1491 chip->pci = pci; 1492 chip->use_cache = use_cache; 1493 spin_lock_init(&chip->reg_lock); 1494 chip->irq = -1; 1495 mutex_init(&chip->irq_mutex); 1496 1497 /* store buffer sizes in bytes */ 1498 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize = playback_bufsize * 1024; 1499 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize = capture_bufsize * 1024; 1500 1501 /* 1502 * The NM256 has two memory ports. The first port is nothing 1503 * more than a chunk of video RAM, which is used as the I/O ring 1504 * buffer. The second port has the actual juicy stuff (like the 1505 * mixer and the playback engine control registers). 1506 */ 1507 1508 chip->buffer_addr = pci_resource_start(pci, 0); 1509 chip->cport_addr = pci_resource_start(pci, 1); 1510 1511 /* Init the memory port info. */ 1512 /* remap control port (#2) */ 1513 chip->res_cport = request_mem_region(chip->cport_addr, NM_PORT2_SIZE, 1514 card->driver); 1515 if (chip->res_cport == NULL) { 1516 snd_printk(KERN_ERR "memory region 0x%lx (size 0x%x) busy\n", 1517 chip->cport_addr, NM_PORT2_SIZE); 1518 err = -EBUSY; 1519 goto __error; 1520 } 1521 chip->cport = ioremap_nocache(chip->cport_addr, NM_PORT2_SIZE); 1522 if (chip->cport == NULL) { 1523 snd_printk(KERN_ERR "unable to map control port %lx\n", chip->cport_addr); 1524 err = -ENOMEM; 1525 goto __error; 1526 } 1527 1528 if (!strcmp(card->driver, "NM256AV")) { 1529 /* Ok, try to see if this is a non-AC97 version of the hardware. */ 1530 pval = snd_nm256_readw(chip, NM_MIXER_PRESENCE); 1531 if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) { 1532 if (! force_ac97) { 1533 printk(KERN_ERR "nm256: no ac97 is found!\n"); 1534 printk(KERN_ERR " force the driver to load by " 1535 "passing in the module parameter\n"); 1536 printk(KERN_ERR " force_ac97=1\n"); 1537 printk(KERN_ERR " or try sb16, opl3sa2, or " 1538 "cs423x drivers instead.\n"); 1539 err = -ENXIO; 1540 goto __error; 1541 } 1542 } 1543 chip->buffer_end = 2560 * 1024; 1544 chip->interrupt = snd_nm256_interrupt; 1545 chip->mixer_status_offset = NM_MIXER_STATUS_OFFSET; 1546 chip->mixer_status_mask = NM_MIXER_READY_MASK; 1547 } else { 1548 /* Not sure if there is any relevant detect for the ZX or not. */ 1549 if (snd_nm256_readb(chip, 0xa0b) != 0) 1550 chip->buffer_end = 6144 * 1024; 1551 else 1552 chip->buffer_end = 4096 * 1024; 1553 1554 chip->interrupt = snd_nm256_interrupt_zx; 1555 chip->mixer_status_offset = NM2_MIXER_STATUS_OFFSET; 1556 chip->mixer_status_mask = NM2_MIXER_READY_MASK; 1557 } 1558 1559 chip->buffer_size = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize + 1560 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize; 1561 if (chip->use_cache) 1562 chip->buffer_size += NM_TOTAL_COEFF_COUNT * 4; 1563 else 1564 chip->buffer_size += NM_MAX_PLAYBACK_COEF_SIZE + NM_MAX_RECORD_COEF_SIZE; 1565 1566 if (buffer_top >= chip->buffer_size && buffer_top < chip->buffer_end) 1567 chip->buffer_end = buffer_top; 1568 else { 1569 /* get buffer end pointer from signature */ 1570 if ((err = snd_nm256_peek_for_sig(chip)) < 0) 1571 goto __error; 1572 } 1573 1574 chip->buffer_start = chip->buffer_end - chip->buffer_size; 1575 chip->buffer_addr += chip->buffer_start; 1576 1577 printk(KERN_INFO "nm256: Mapping port 1 from 0x%x - 0x%x\n", 1578 chip->buffer_start, chip->buffer_end); 1579 1580 chip->res_buffer = request_mem_region(chip->buffer_addr, 1581 chip->buffer_size, 1582 card->driver); 1583 if (chip->res_buffer == NULL) { 1584 snd_printk(KERN_ERR "nm256: buffer 0x%lx (size 0x%x) busy\n", 1585 chip->buffer_addr, chip->buffer_size); 1586 err = -EBUSY; 1587 goto __error; 1588 } 1589 chip->buffer = ioremap_nocache(chip->buffer_addr, chip->buffer_size); 1590 if (chip->buffer == NULL) { 1591 err = -ENOMEM; 1592 snd_printk(KERN_ERR "unable to map ring buffer at %lx\n", chip->buffer_addr); 1593 goto __error; 1594 } 1595 1596 /* set offsets */ 1597 addr = chip->buffer_start; 1598 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].buf = addr; 1599 addr += chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize; 1600 chip->streams[SNDRV_PCM_STREAM_CAPTURE].buf = addr; 1601 addr += chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize; 1602 if (chip->use_cache) { 1603 chip->all_coeff_buf = addr; 1604 } else { 1605 chip->coeff_buf[SNDRV_PCM_STREAM_PLAYBACK] = addr; 1606 addr += NM_MAX_PLAYBACK_COEF_SIZE; 1607 chip->coeff_buf[SNDRV_PCM_STREAM_CAPTURE] = addr; 1608 } 1609 1610 /* Fixed setting. */ 1611 chip->mixer_base = NM_MIXER_OFFSET; 1612 1613 chip->coeffs_current = 0; 1614 1615 snd_nm256_init_chip(chip); 1616 1617 // pci_set_master(pci); /* needed? */ 1618 1619 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) 1620 goto __error; 1621 1622 snd_card_set_dev(card, &pci->dev); 1623 1624 *chip_ret = chip; 1625 return 0; 1626 1627__error: 1628 snd_nm256_free(chip); 1629 return err; 1630} 1631 1632 1633enum { NM_BLACKLISTED, NM_RESET_WORKAROUND, NM_RESET_WORKAROUND_2 }; 1634 1635static struct snd_pci_quirk nm256_quirks[] __devinitdata = { 1636 /* HP omnibook 4150 has cs4232 codec internally */ 1637 SND_PCI_QUIRK(0x103c, 0x0007, "HP omnibook 4150", NM_BLACKLISTED), 1638 /* Reset workarounds to avoid lock-ups */ 1639 SND_PCI_QUIRK(0x104d, 0x8041, "Sony PCG-F305", NM_RESET_WORKAROUND), 1640 SND_PCI_QUIRK(0x1028, 0x0080, "Dell Latitude LS", NM_RESET_WORKAROUND), 1641 SND_PCI_QUIRK(0x1028, 0x0091, "Dell Latitude CSx", NM_RESET_WORKAROUND_2), 1642 { } /* terminator */ 1643}; 1644 1645 1646static int __devinit snd_nm256_probe(struct pci_dev *pci, 1647 const struct pci_device_id *pci_id) 1648{ 1649 struct snd_card *card; 1650 struct nm256 *chip; 1651 int err; 1652 const struct snd_pci_quirk *q; 1653 1654 q = snd_pci_quirk_lookup(pci, nm256_quirks); 1655 if (q) { 1656 snd_printdd(KERN_INFO "nm256: Enabled quirk for %s.\n", q->name); 1657 switch (q->value) { 1658 case NM_BLACKLISTED: 1659 printk(KERN_INFO "nm256: The device is blacklisted. " 1660 "Loading stopped\n"); 1661 return -ENODEV; 1662 case NM_RESET_WORKAROUND_2: 1663 reset_workaround_2 = 1; 1664 /* Fall-through */ 1665 case NM_RESET_WORKAROUND: 1666 reset_workaround = 1; 1667 break; 1668 } 1669 } 1670 1671 err = snd_card_create(index, id, THIS_MODULE, 0, &card); 1672 if (err < 0) 1673 return err; 1674 1675 switch (pci->device) { 1676 case PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO: 1677 strcpy(card->driver, "NM256AV"); 1678 break; 1679 case PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO: 1680 strcpy(card->driver, "NM256ZX"); 1681 break; 1682 case PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO: 1683 strcpy(card->driver, "NM256XL+"); 1684 break; 1685 default: 1686 snd_printk(KERN_ERR "invalid device id 0x%x\n", pci->device); 1687 snd_card_free(card); 1688 return -EINVAL; 1689 } 1690 1691 if (vaio_hack) 1692 buffer_top = 0x25a800; /* this avoids conflicts with XFree86 server */ 1693 1694 if (playback_bufsize < 4) 1695 playback_bufsize = 4; 1696 if (playback_bufsize > 128) 1697 playback_bufsize = 128; 1698 if (capture_bufsize < 4) 1699 capture_bufsize = 4; 1700 if (capture_bufsize > 128) 1701 capture_bufsize = 128; 1702 if ((err = snd_nm256_create(card, pci, &chip)) < 0) { 1703 snd_card_free(card); 1704 return err; 1705 } 1706 card->private_data = chip; 1707 1708 if (reset_workaround) { 1709 snd_printdd(KERN_INFO "nm256: reset_workaround activated\n"); 1710 chip->reset_workaround = 1; 1711 } 1712 1713 if (reset_workaround_2) { 1714 snd_printdd(KERN_INFO "nm256: reset_workaround_2 activated\n"); 1715 chip->reset_workaround_2 = 1; 1716 } 1717 1718 if ((err = snd_nm256_pcm(chip, 0)) < 0 || 1719 (err = snd_nm256_mixer(chip)) < 0) { 1720 snd_card_free(card); 1721 return err; 1722 } 1723 1724 sprintf(card->shortname, "NeoMagic %s", card->driver); 1725 sprintf(card->longname, "%s at 0x%lx & 0x%lx, irq %d", 1726 card->shortname, 1727 chip->buffer_addr, chip->cport_addr, chip->irq); 1728 1729 if ((err = snd_card_register(card)) < 0) { 1730 snd_card_free(card); 1731 return err; 1732 } 1733 1734 pci_set_drvdata(pci, card); 1735 return 0; 1736} 1737 1738static void __devexit snd_nm256_remove(struct pci_dev *pci) 1739{ 1740 snd_card_free(pci_get_drvdata(pci)); 1741 pci_set_drvdata(pci, NULL); 1742} 1743 1744 1745static struct pci_driver driver = { 1746 .name = "NeoMagic 256", 1747 .id_table = snd_nm256_ids, 1748 .probe = snd_nm256_probe, 1749 .remove = __devexit_p(snd_nm256_remove), 1750#ifdef CONFIG_PM 1751 .suspend = nm256_suspend, 1752 .resume = nm256_resume, 1753#endif 1754}; 1755 1756 1757static int __init alsa_card_nm256_init(void) 1758{ 1759 return pci_register_driver(&driver); 1760} 1761 1762static void __exit alsa_card_nm256_exit(void) 1763{ 1764 pci_unregister_driver(&driver); 1765} 1766 1767module_init(alsa_card_nm256_init) 1768module_exit(alsa_card_nm256_exit) 1769