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 <linux/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/module.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 bool force_ac97; /* disabled as default */ 61static int buffer_top; /* not specified */ 62static bool use_cache; /* disabled */ 63static bool vaio_hack; /* disabled */ 64static bool reset_workaround; 65static bool 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 bool 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; /* Workaround for some laptops to avoid freeze */ 229 unsigned int reset_workaround_2: 1; /* Extended workaround for some other laptops to avoid freeze */ 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 const struct pci_device_id 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 dev_err(chip->card->dev, 322 "write_buffer invalid offset = %d size = %d\n", 323 offset, size); 324 return; 325 } 326#endif 327 memcpy_toio(chip->buffer + offset, src, size); 328} 329 330/* 331 * coefficient handlers -- what a magic! 332 */ 333 334static u16 335snd_nm256_get_start_offset(int which) 336{ 337 u16 offset = 0; 338 while (which-- > 0) 339 offset += coefficient_sizes[which]; 340 return offset; 341} 342 343static void 344snd_nm256_load_one_coefficient(struct nm256 *chip, int stream, u32 port, int which) 345{ 346 u32 coeff_buf = chip->coeff_buf[stream]; 347 u16 offset = snd_nm256_get_start_offset(which); 348 u16 size = coefficient_sizes[which]; 349 350 snd_nm256_write_buffer(chip, coefficients + offset, coeff_buf, size); 351 snd_nm256_writel(chip, port, coeff_buf); 352 /* ??? Record seems to behave differently than playback. */ 353 if (stream == SNDRV_PCM_STREAM_PLAYBACK) 354 size--; 355 snd_nm256_writel(chip, port + 4, coeff_buf + size); 356} 357 358static void 359snd_nm256_load_coefficient(struct nm256 *chip, int stream, int number) 360{ 361 /* The enable register for the specified engine. */ 362 u32 poffset = (stream == SNDRV_PCM_STREAM_CAPTURE ? 363 NM_RECORD_ENABLE_REG : NM_PLAYBACK_ENABLE_REG); 364 u32 addr = NM_COEFF_START_OFFSET; 365 366 addr += (stream == SNDRV_PCM_STREAM_CAPTURE ? 367 NM_RECORD_REG_OFFSET : NM_PLAYBACK_REG_OFFSET); 368 369 if (snd_nm256_readb(chip, poffset) & 1) { 370 dev_dbg(chip->card->dev, 371 "NM256: Engine was enabled while loading coefficients!\n"); 372 return; 373 } 374 375 /* The recording engine uses coefficient values 8-15. */ 376 number &= 7; 377 if (stream == SNDRV_PCM_STREAM_CAPTURE) 378 number += 8; 379 380 if (! chip->use_cache) { 381 snd_nm256_load_one_coefficient(chip, stream, addr, number); 382 return; 383 } 384 if (! chip->coeffs_current) { 385 snd_nm256_write_buffer(chip, coefficients, chip->all_coeff_buf, 386 NM_TOTAL_COEFF_COUNT * 4); 387 chip->coeffs_current = 1; 388 } else { 389 u32 base = chip->all_coeff_buf; 390 u32 offset = snd_nm256_get_start_offset(number); 391 u32 end_offset = offset + coefficient_sizes[number]; 392 snd_nm256_writel(chip, addr, base + offset); 393 if (stream == SNDRV_PCM_STREAM_PLAYBACK) 394 end_offset--; 395 snd_nm256_writel(chip, addr + 4, base + end_offset); 396 } 397} 398 399 400/* The actual rates supported by the card. */ 401static unsigned int samplerates[8] = { 402 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000, 403}; 404static struct snd_pcm_hw_constraint_list constraints_rates = { 405 .count = ARRAY_SIZE(samplerates), 406 .list = samplerates, 407 .mask = 0, 408}; 409 410/* 411 * return the index of the target rate 412 */ 413static int 414snd_nm256_fixed_rate(unsigned int rate) 415{ 416 unsigned int i; 417 for (i = 0; i < ARRAY_SIZE(samplerates); i++) { 418 if (rate == samplerates[i]) 419 return i; 420 } 421 snd_BUG(); 422 return 0; 423} 424 425/* 426 * set sample rate and format 427 */ 428static void 429snd_nm256_set_format(struct nm256 *chip, struct nm256_stream *s, 430 struct snd_pcm_substream *substream) 431{ 432 struct snd_pcm_runtime *runtime = substream->runtime; 433 int rate_index = snd_nm256_fixed_rate(runtime->rate); 434 unsigned char ratebits = (rate_index << 4) & NM_RATE_MASK; 435 436 s->shift = 0; 437 if (snd_pcm_format_width(runtime->format) == 16) { 438 ratebits |= NM_RATE_BITS_16; 439 s->shift++; 440 } 441 if (runtime->channels > 1) { 442 ratebits |= NM_RATE_STEREO; 443 s->shift++; 444 } 445 446 runtime->rate = samplerates[rate_index]; 447 448 switch (substream->stream) { 449 case SNDRV_PCM_STREAM_PLAYBACK: 450 snd_nm256_load_coefficient(chip, 0, rate_index); /* 0 = playback */ 451 snd_nm256_writeb(chip, 452 NM_PLAYBACK_REG_OFFSET + NM_RATE_REG_OFFSET, 453 ratebits); 454 break; 455 case SNDRV_PCM_STREAM_CAPTURE: 456 snd_nm256_load_coefficient(chip, 1, rate_index); /* 1 = record */ 457 snd_nm256_writeb(chip, 458 NM_RECORD_REG_OFFSET + NM_RATE_REG_OFFSET, 459 ratebits); 460 break; 461 } 462} 463 464/* acquire interrupt */ 465static int snd_nm256_acquire_irq(struct nm256 *chip) 466{ 467 mutex_lock(&chip->irq_mutex); 468 if (chip->irq < 0) { 469 if (request_irq(chip->pci->irq, chip->interrupt, IRQF_SHARED, 470 KBUILD_MODNAME, chip)) { 471 dev_err(chip->card->dev, 472 "unable to grab IRQ %d\n", chip->pci->irq); 473 mutex_unlock(&chip->irq_mutex); 474 return -EBUSY; 475 } 476 chip->irq = chip->pci->irq; 477 } 478 chip->irq_acks++; 479 mutex_unlock(&chip->irq_mutex); 480 return 0; 481} 482 483/* release interrupt */ 484static void snd_nm256_release_irq(struct nm256 *chip) 485{ 486 mutex_lock(&chip->irq_mutex); 487 if (chip->irq_acks > 0) 488 chip->irq_acks--; 489 if (chip->irq_acks == 0 && chip->irq >= 0) { 490 free_irq(chip->irq, chip); 491 chip->irq = -1; 492 } 493 mutex_unlock(&chip->irq_mutex); 494} 495 496/* 497 * start / stop 498 */ 499 500/* update the watermark (current period) */ 501static void snd_nm256_pcm_mark(struct nm256 *chip, struct nm256_stream *s, int reg) 502{ 503 s->cur_period++; 504 s->cur_period %= s->periods; 505 snd_nm256_writel(chip, reg, s->buf + s->cur_period * s->period_size); 506} 507 508#define snd_nm256_playback_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_PBUFFER_WMARK) 509#define snd_nm256_capture_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_RBUFFER_WMARK) 510 511static void 512snd_nm256_playback_start(struct nm256 *chip, struct nm256_stream *s, 513 struct snd_pcm_substream *substream) 514{ 515 /* program buffer pointers */ 516 snd_nm256_writel(chip, NM_PBUFFER_START, s->buf); 517 snd_nm256_writel(chip, NM_PBUFFER_END, s->buf + s->dma_size - (1 << s->shift)); 518 snd_nm256_writel(chip, NM_PBUFFER_CURRP, s->buf); 519 snd_nm256_playback_mark(chip, s); 520 521 /* Enable playback engine and interrupts. */ 522 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 523 NM_PLAYBACK_ENABLE_FLAG | NM_PLAYBACK_FREERUN); 524 /* Enable both channels. */ 525 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0); 526} 527 528static void 529snd_nm256_capture_start(struct nm256 *chip, struct nm256_stream *s, 530 struct snd_pcm_substream *substream) 531{ 532 /* program buffer pointers */ 533 snd_nm256_writel(chip, NM_RBUFFER_START, s->buf); 534 snd_nm256_writel(chip, NM_RBUFFER_END, s->buf + s->dma_size); 535 snd_nm256_writel(chip, NM_RBUFFER_CURRP, s->buf); 536 snd_nm256_capture_mark(chip, s); 537 538 /* Enable playback engine and interrupts. */ 539 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 540 NM_RECORD_ENABLE_FLAG | NM_RECORD_FREERUN); 541} 542 543/* Stop the play engine. */ 544static void 545snd_nm256_playback_stop(struct nm256 *chip) 546{ 547 /* Shut off sound from both channels. */ 548 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 549 NM_AUDIO_MUTE_LEFT | NM_AUDIO_MUTE_RIGHT); 550 /* Disable play engine. */ 551 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 0); 552} 553 554static void 555snd_nm256_capture_stop(struct nm256 *chip) 556{ 557 /* Disable recording engine. */ 558 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 0); 559} 560 561static int 562snd_nm256_playback_trigger(struct snd_pcm_substream *substream, int cmd) 563{ 564 struct nm256 *chip = snd_pcm_substream_chip(substream); 565 struct nm256_stream *s = substream->runtime->private_data; 566 int err = 0; 567 568 if (snd_BUG_ON(!s)) 569 return -ENXIO; 570 571 spin_lock(&chip->reg_lock); 572 switch (cmd) { 573 case SNDRV_PCM_TRIGGER_RESUME: 574 s->suspended = 0; 575 /* fallthru */ 576 case SNDRV_PCM_TRIGGER_START: 577 if (! s->running) { 578 snd_nm256_playback_start(chip, s, substream); 579 s->running = 1; 580 } 581 break; 582 case SNDRV_PCM_TRIGGER_SUSPEND: 583 s->suspended = 1; 584 /* fallthru */ 585 case SNDRV_PCM_TRIGGER_STOP: 586 if (s->running) { 587 snd_nm256_playback_stop(chip); 588 s->running = 0; 589 } 590 break; 591 default: 592 err = -EINVAL; 593 break; 594 } 595 spin_unlock(&chip->reg_lock); 596 return err; 597} 598 599static int 600snd_nm256_capture_trigger(struct snd_pcm_substream *substream, int cmd) 601{ 602 struct nm256 *chip = snd_pcm_substream_chip(substream); 603 struct nm256_stream *s = substream->runtime->private_data; 604 int err = 0; 605 606 if (snd_BUG_ON(!s)) 607 return -ENXIO; 608 609 spin_lock(&chip->reg_lock); 610 switch (cmd) { 611 case SNDRV_PCM_TRIGGER_START: 612 case SNDRV_PCM_TRIGGER_RESUME: 613 if (! s->running) { 614 snd_nm256_capture_start(chip, s, substream); 615 s->running = 1; 616 } 617 break; 618 case SNDRV_PCM_TRIGGER_STOP: 619 case SNDRV_PCM_TRIGGER_SUSPEND: 620 if (s->running) { 621 snd_nm256_capture_stop(chip); 622 s->running = 0; 623 } 624 break; 625 default: 626 err = -EINVAL; 627 break; 628 } 629 spin_unlock(&chip->reg_lock); 630 return err; 631} 632 633 634/* 635 * prepare playback/capture channel 636 */ 637static int snd_nm256_pcm_prepare(struct snd_pcm_substream *substream) 638{ 639 struct nm256 *chip = snd_pcm_substream_chip(substream); 640 struct snd_pcm_runtime *runtime = substream->runtime; 641 struct nm256_stream *s = runtime->private_data; 642 643 if (snd_BUG_ON(!s)) 644 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 */ 662static snd_pcm_uframes_t 663snd_nm256_playback_pointer(struct snd_pcm_substream *substream) 664{ 665 struct nm256 *chip = snd_pcm_substream_chip(substream); 666 struct nm256_stream *s = substream->runtime->private_data; 667 unsigned long curp; 668 669 if (snd_BUG_ON(!s)) 670 return 0; 671 curp = snd_nm256_readl(chip, NM_PBUFFER_CURRP) - (unsigned long)s->buf; 672 curp %= s->dma_size; 673 return bytes_to_frames(substream->runtime, curp); 674} 675 676static snd_pcm_uframes_t 677snd_nm256_capture_pointer(struct snd_pcm_substream *substream) 678{ 679 struct nm256 *chip = snd_pcm_substream_chip(substream); 680 struct nm256_stream *s = substream->runtime->private_data; 681 unsigned long curp; 682 683 if (snd_BUG_ON(!s)) 684 return 0; 685 curp = snd_nm256_readl(chip, NM_RBUFFER_CURRP) - (unsigned long)s->buf; 686 curp %= s->dma_size; 687 return bytes_to_frames(substream->runtime, curp); 688} 689 690/* Remapped I/O space can be accessible as pointer on i386 */ 691/* This might be changed in the future */ 692#ifndef __i386__ 693/* 694 * silence / copy for playback 695 */ 696static int 697snd_nm256_playback_silence(struct snd_pcm_substream *substream, 698 int channel, /* not used (interleaved data) */ 699 snd_pcm_uframes_t pos, 700 snd_pcm_uframes_t count) 701{ 702 struct snd_pcm_runtime *runtime = substream->runtime; 703 struct nm256_stream *s = runtime->private_data; 704 count = frames_to_bytes(runtime, count); 705 pos = frames_to_bytes(runtime, pos); 706 memset_io(s->bufptr + pos, 0, count); 707 return 0; 708} 709 710static int 711snd_nm256_playback_copy(struct snd_pcm_substream *substream, 712 int channel, /* not used (interleaved data) */ 713 snd_pcm_uframes_t pos, 714 void __user *src, 715 snd_pcm_uframes_t count) 716{ 717 struct snd_pcm_runtime *runtime = substream->runtime; 718 struct nm256_stream *s = runtime->private_data; 719 count = frames_to_bytes(runtime, count); 720 pos = frames_to_bytes(runtime, pos); 721 if (copy_from_user_toio(s->bufptr + pos, src, count)) 722 return -EFAULT; 723 return 0; 724} 725 726/* 727 * copy to user 728 */ 729static int 730snd_nm256_capture_copy(struct snd_pcm_substream *substream, 731 int channel, /* not used (interleaved data) */ 732 snd_pcm_uframes_t pos, 733 void __user *dst, 734 snd_pcm_uframes_t count) 735{ 736 struct snd_pcm_runtime *runtime = substream->runtime; 737 struct nm256_stream *s = runtime->private_data; 738 count = frames_to_bytes(runtime, count); 739 pos = frames_to_bytes(runtime, pos); 740 if (copy_to_user_fromio(dst, s->bufptr + pos, count)) 741 return -EFAULT; 742 return 0; 743} 744 745#endif /* !__i386__ */ 746 747 748/* 749 * update playback/capture watermarks 750 */ 751 752/* spinlock held! */ 753static void 754snd_nm256_playback_update(struct nm256 *chip) 755{ 756 struct nm256_stream *s; 757 758 s = &chip->streams[SNDRV_PCM_STREAM_PLAYBACK]; 759 if (s->running && s->substream) { 760 spin_unlock(&chip->reg_lock); 761 snd_pcm_period_elapsed(s->substream); 762 spin_lock(&chip->reg_lock); 763 snd_nm256_playback_mark(chip, s); 764 } 765} 766 767/* spinlock held! */ 768static void 769snd_nm256_capture_update(struct nm256 *chip) 770{ 771 struct nm256_stream *s; 772 773 s = &chip->streams[SNDRV_PCM_STREAM_CAPTURE]; 774 if (s->running && s->substream) { 775 spin_unlock(&chip->reg_lock); 776 snd_pcm_period_elapsed(s->substream); 777 spin_lock(&chip->reg_lock); 778 snd_nm256_capture_mark(chip, s); 779 } 780} 781 782/* 783 * hardware info 784 */ 785static struct snd_pcm_hardware snd_nm256_playback = 786{ 787 .info = SNDRV_PCM_INFO_MMAP_IOMEM |SNDRV_PCM_INFO_MMAP_VALID | 788 SNDRV_PCM_INFO_INTERLEAVED | 789 /*SNDRV_PCM_INFO_PAUSE |*/ 790 SNDRV_PCM_INFO_RESUME, 791 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 792 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000, 793 .rate_min = 8000, 794 .rate_max = 48000, 795 .channels_min = 1, 796 .channels_max = 2, 797 .periods_min = 2, 798 .periods_max = 1024, 799 .buffer_bytes_max = 128 * 1024, 800 .period_bytes_min = 256, 801 .period_bytes_max = 128 * 1024, 802}; 803 804static struct snd_pcm_hardware snd_nm256_capture = 805{ 806 .info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID | 807 SNDRV_PCM_INFO_INTERLEAVED | 808 /*SNDRV_PCM_INFO_PAUSE |*/ 809 SNDRV_PCM_INFO_RESUME, 810 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 811 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000, 812 .rate_min = 8000, 813 .rate_max = 48000, 814 .channels_min = 1, 815 .channels_max = 2, 816 .periods_min = 2, 817 .periods_max = 1024, 818 .buffer_bytes_max = 128 * 1024, 819 .period_bytes_min = 256, 820 .period_bytes_max = 128 * 1024, 821}; 822 823 824/* set dma transfer size */ 825static int snd_nm256_pcm_hw_params(struct snd_pcm_substream *substream, 826 struct snd_pcm_hw_params *hw_params) 827{ 828 /* area and addr are already set and unchanged */ 829 substream->runtime->dma_bytes = params_buffer_bytes(hw_params); 830 return 0; 831} 832 833/* 834 * open 835 */ 836static void snd_nm256_setup_stream(struct nm256 *chip, struct nm256_stream *s, 837 struct snd_pcm_substream *substream, 838 struct snd_pcm_hardware *hw_ptr) 839{ 840 struct snd_pcm_runtime *runtime = substream->runtime; 841 842 s->running = 0; 843 runtime->hw = *hw_ptr; 844 runtime->hw.buffer_bytes_max = s->bufsize; 845 runtime->hw.period_bytes_max = s->bufsize / 2; 846 runtime->dma_area = (void __force *) s->bufptr; 847 runtime->dma_addr = s->bufptr_addr; 848 runtime->dma_bytes = s->bufsize; 849 runtime->private_data = s; 850 s->substream = substream; 851 852 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 853 &constraints_rates); 854} 855 856static int 857snd_nm256_playback_open(struct snd_pcm_substream *substream) 858{ 859 struct nm256 *chip = snd_pcm_substream_chip(substream); 860 861 if (snd_nm256_acquire_irq(chip) < 0) 862 return -EBUSY; 863 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK], 864 substream, &snd_nm256_playback); 865 return 0; 866} 867 868static int 869snd_nm256_capture_open(struct snd_pcm_substream *substream) 870{ 871 struct nm256 *chip = snd_pcm_substream_chip(substream); 872 873 if (snd_nm256_acquire_irq(chip) < 0) 874 return -EBUSY; 875 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_CAPTURE], 876 substream, &snd_nm256_capture); 877 return 0; 878} 879 880/* 881 * close - we don't have to do special.. 882 */ 883static int 884snd_nm256_playback_close(struct snd_pcm_substream *substream) 885{ 886 struct nm256 *chip = snd_pcm_substream_chip(substream); 887 888 snd_nm256_release_irq(chip); 889 return 0; 890} 891 892 893static int 894snd_nm256_capture_close(struct snd_pcm_substream *substream) 895{ 896 struct nm256 *chip = snd_pcm_substream_chip(substream); 897 898 snd_nm256_release_irq(chip); 899 return 0; 900} 901 902/* 903 * create a pcm instance 904 */ 905static struct snd_pcm_ops snd_nm256_playback_ops = { 906 .open = snd_nm256_playback_open, 907 .close = snd_nm256_playback_close, 908 .ioctl = snd_pcm_lib_ioctl, 909 .hw_params = snd_nm256_pcm_hw_params, 910 .prepare = snd_nm256_pcm_prepare, 911 .trigger = snd_nm256_playback_trigger, 912 .pointer = snd_nm256_playback_pointer, 913#ifndef __i386__ 914 .copy = snd_nm256_playback_copy, 915 .silence = snd_nm256_playback_silence, 916#endif 917 .mmap = snd_pcm_lib_mmap_iomem, 918}; 919 920static struct snd_pcm_ops snd_nm256_capture_ops = { 921 .open = snd_nm256_capture_open, 922 .close = snd_nm256_capture_close, 923 .ioctl = snd_pcm_lib_ioctl, 924 .hw_params = snd_nm256_pcm_hw_params, 925 .prepare = snd_nm256_pcm_prepare, 926 .trigger = snd_nm256_capture_trigger, 927 .pointer = snd_nm256_capture_pointer, 928#ifndef __i386__ 929 .copy = snd_nm256_capture_copy, 930#endif 931 .mmap = snd_pcm_lib_mmap_iomem, 932}; 933 934static int 935snd_nm256_pcm(struct nm256 *chip, int device) 936{ 937 struct snd_pcm *pcm; 938 int i, err; 939 940 for (i = 0; i < 2; i++) { 941 struct nm256_stream *s = &chip->streams[i]; 942 s->bufptr = chip->buffer + (s->buf - chip->buffer_start); 943 s->bufptr_addr = chip->buffer_addr + (s->buf - chip->buffer_start); 944 } 945 946 err = snd_pcm_new(chip->card, chip->card->driver, device, 947 1, 1, &pcm); 948 if (err < 0) 949 return err; 950 951 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_nm256_playback_ops); 952 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_nm256_capture_ops); 953 954 pcm->private_data = chip; 955 pcm->info_flags = 0; 956 chip->pcm = pcm; 957 958 return 0; 959} 960 961 962/* 963 * Initialize the hardware. 964 */ 965static void 966snd_nm256_init_chip(struct nm256 *chip) 967{ 968 /* Reset everything. */ 969 snd_nm256_writeb(chip, 0x0, 0x11); 970 snd_nm256_writew(chip, 0x214, 0); 971 /* stop sounds.. */ 972 //snd_nm256_playback_stop(chip); 973 //snd_nm256_capture_stop(chip); 974} 975 976 977static irqreturn_t 978snd_nm256_intr_check(struct nm256 *chip) 979{ 980 if (chip->badintrcount++ > 1000) { 981 /* 982 * I'm not sure if the best thing is to stop the card from 983 * playing or just release the interrupt (after all, we're in 984 * a bad situation, so doing fancy stuff may not be such a good 985 * idea). 986 * 987 * I worry about the card engine continuing to play noise 988 * over and over, however--that could become a very 989 * obnoxious problem. And we know that when this usually 990 * happens things are fairly safe, it just means the user's 991 * inserted a PCMCIA card and someone's spamming us with IRQ 9s. 992 */ 993 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running) 994 snd_nm256_playback_stop(chip); 995 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running) 996 snd_nm256_capture_stop(chip); 997 chip->badintrcount = 0; 998 return IRQ_HANDLED; 999 } 1000 return IRQ_NONE; 1001} 1002 1003/* 1004 * Handle a potential interrupt for the device referred to by DEV_ID. 1005 * 1006 * I don't like the cut-n-paste job here either between the two routines, 1007 * but there are sufficient differences between the two interrupt handlers 1008 * that parameterizing it isn't all that great either. (Could use a macro, 1009 * I suppose...yucky bleah.) 1010 */ 1011 1012static irqreturn_t 1013snd_nm256_interrupt(int irq, void *dev_id) 1014{ 1015 struct nm256 *chip = dev_id; 1016 u16 status; 1017 u8 cbyte; 1018 1019 status = snd_nm256_readw(chip, NM_INT_REG); 1020 1021 /* Not ours. */ 1022 if (status == 0) 1023 return snd_nm256_intr_check(chip); 1024 1025 chip->badintrcount = 0; 1026 1027 /* Rather boring; check for individual interrupts and process them. */ 1028 1029 spin_lock(&chip->reg_lock); 1030 if (status & NM_PLAYBACK_INT) { 1031 status &= ~NM_PLAYBACK_INT; 1032 NM_ACK_INT(chip, NM_PLAYBACK_INT); 1033 snd_nm256_playback_update(chip); 1034 } 1035 1036 if (status & NM_RECORD_INT) { 1037 status &= ~NM_RECORD_INT; 1038 NM_ACK_INT(chip, NM_RECORD_INT); 1039 snd_nm256_capture_update(chip); 1040 } 1041 1042 if (status & NM_MISC_INT_1) { 1043 status &= ~NM_MISC_INT_1; 1044 NM_ACK_INT(chip, NM_MISC_INT_1); 1045 dev_dbg(chip->card->dev, "NM256: Got misc interrupt #1\n"); 1046 snd_nm256_writew(chip, NM_INT_REG, 0x8000); 1047 cbyte = snd_nm256_readb(chip, 0x400); 1048 snd_nm256_writeb(chip, 0x400, cbyte | 2); 1049 } 1050 1051 if (status & NM_MISC_INT_2) { 1052 status &= ~NM_MISC_INT_2; 1053 NM_ACK_INT(chip, NM_MISC_INT_2); 1054 dev_dbg(chip->card->dev, "NM256: Got misc interrupt #2\n"); 1055 cbyte = snd_nm256_readb(chip, 0x400); 1056 snd_nm256_writeb(chip, 0x400, cbyte & ~2); 1057 } 1058 1059 /* Unknown interrupt. */ 1060 if (status) { 1061 dev_dbg(chip->card->dev, 1062 "NM256: Fire in the hole! Unknown status 0x%x\n", 1063 status); 1064 /* Pray. */ 1065 NM_ACK_INT(chip, status); 1066 } 1067 1068 spin_unlock(&chip->reg_lock); 1069 return IRQ_HANDLED; 1070} 1071 1072/* 1073 * Handle a potential interrupt for the device referred to by DEV_ID. 1074 * This handler is for the 256ZX, and is very similar to the non-ZX 1075 * routine. 1076 */ 1077 1078static irqreturn_t 1079snd_nm256_interrupt_zx(int irq, void *dev_id) 1080{ 1081 struct nm256 *chip = dev_id; 1082 u32 status; 1083 u8 cbyte; 1084 1085 status = snd_nm256_readl(chip, NM_INT_REG); 1086 1087 /* Not ours. */ 1088 if (status == 0) 1089 return snd_nm256_intr_check(chip); 1090 1091 chip->badintrcount = 0; 1092 1093 /* Rather boring; check for individual interrupts and process them. */ 1094 1095 spin_lock(&chip->reg_lock); 1096 if (status & NM2_PLAYBACK_INT) { 1097 status &= ~NM2_PLAYBACK_INT; 1098 NM2_ACK_INT(chip, NM2_PLAYBACK_INT); 1099 snd_nm256_playback_update(chip); 1100 } 1101 1102 if (status & NM2_RECORD_INT) { 1103 status &= ~NM2_RECORD_INT; 1104 NM2_ACK_INT(chip, NM2_RECORD_INT); 1105 snd_nm256_capture_update(chip); 1106 } 1107 1108 if (status & NM2_MISC_INT_1) { 1109 status &= ~NM2_MISC_INT_1; 1110 NM2_ACK_INT(chip, NM2_MISC_INT_1); 1111 dev_dbg(chip->card->dev, "NM256: Got misc interrupt #1\n"); 1112 cbyte = snd_nm256_readb(chip, 0x400); 1113 snd_nm256_writeb(chip, 0x400, cbyte | 2); 1114 } 1115 1116 if (status & NM2_MISC_INT_2) { 1117 status &= ~NM2_MISC_INT_2; 1118 NM2_ACK_INT(chip, NM2_MISC_INT_2); 1119 dev_dbg(chip->card->dev, "NM256: Got misc interrupt #2\n"); 1120 cbyte = snd_nm256_readb(chip, 0x400); 1121 snd_nm256_writeb(chip, 0x400, cbyte & ~2); 1122 } 1123 1124 /* Unknown interrupt. */ 1125 if (status) { 1126 dev_dbg(chip->card->dev, 1127 "NM256: Fire in the hole! Unknown status 0x%x\n", 1128 status); 1129 /* Pray. */ 1130 NM2_ACK_INT(chip, status); 1131 } 1132 1133 spin_unlock(&chip->reg_lock); 1134 return IRQ_HANDLED; 1135} 1136 1137/* 1138 * AC97 interface 1139 */ 1140 1141/* 1142 * Waits for the mixer to become ready to be written; returns a zero value 1143 * if it timed out. 1144 */ 1145static int 1146snd_nm256_ac97_ready(struct nm256 *chip) 1147{ 1148 int timeout = 10; 1149 u32 testaddr; 1150 u16 testb; 1151 1152 testaddr = chip->mixer_status_offset; 1153 testb = chip->mixer_status_mask; 1154 1155 /* 1156 * Loop around waiting for the mixer to become ready. 1157 */ 1158 while (timeout-- > 0) { 1159 if ((snd_nm256_readw(chip, testaddr) & testb) == 0) 1160 return 1; 1161 udelay(100); 1162 } 1163 return 0; 1164} 1165 1166/* 1167 * Initial register values to be written to the AC97 mixer. 1168 * While most of these are identical to the reset values, we do this 1169 * so that we have most of the register contents cached--this avoids 1170 * reading from the mixer directly (which seems to be problematic, 1171 * probably due to ignorance). 1172 */ 1173 1174struct initialValues { 1175 unsigned short reg; 1176 unsigned short value; 1177}; 1178 1179static struct initialValues nm256_ac97_init_val[] = 1180{ 1181 { AC97_MASTER, 0x8000 }, 1182 { AC97_HEADPHONE, 0x8000 }, 1183 { AC97_MASTER_MONO, 0x8000 }, 1184 { AC97_PC_BEEP, 0x8000 }, 1185 { AC97_PHONE, 0x8008 }, 1186 { AC97_MIC, 0x8000 }, 1187 { AC97_LINE, 0x8808 }, 1188 { AC97_CD, 0x8808 }, 1189 { AC97_VIDEO, 0x8808 }, 1190 { AC97_AUX, 0x8808 }, 1191 { AC97_PCM, 0x8808 }, 1192 { AC97_REC_SEL, 0x0000 }, 1193 { AC97_REC_GAIN, 0x0B0B }, 1194 { AC97_GENERAL_PURPOSE, 0x0000 }, 1195 { AC97_3D_CONTROL, 0x8000 }, 1196 { AC97_VENDOR_ID1, 0x8384 }, 1197 { AC97_VENDOR_ID2, 0x7609 }, 1198}; 1199 1200static int nm256_ac97_idx(unsigned short reg) 1201{ 1202 int i; 1203 for (i = 0; i < ARRAY_SIZE(nm256_ac97_init_val); i++) 1204 if (nm256_ac97_init_val[i].reg == reg) 1205 return i; 1206 return -1; 1207} 1208 1209/* 1210 * some nm256 easily crash when reading from mixer registers 1211 * thus we're treating it as a write-only mixer and cache the 1212 * written values 1213 */ 1214static unsigned short 1215snd_nm256_ac97_read(struct snd_ac97 *ac97, unsigned short reg) 1216{ 1217 struct nm256 *chip = ac97->private_data; 1218 int idx = nm256_ac97_idx(reg); 1219 1220 if (idx < 0) 1221 return 0; 1222 return chip->ac97_regs[idx]; 1223} 1224 1225/* 1226 */ 1227static void 1228snd_nm256_ac97_write(struct snd_ac97 *ac97, 1229 unsigned short reg, unsigned short val) 1230{ 1231 struct nm256 *chip = ac97->private_data; 1232 int tries = 2; 1233 int idx = nm256_ac97_idx(reg); 1234 u32 base; 1235 1236 if (idx < 0) 1237 return; 1238 1239 base = chip->mixer_base; 1240 1241 snd_nm256_ac97_ready(chip); 1242 1243 /* Wait for the write to take, too. */ 1244 while (tries-- > 0) { 1245 snd_nm256_writew(chip, base + reg, val); 1246 msleep(1); /* a little delay here seems better.. */ 1247 if (snd_nm256_ac97_ready(chip)) { 1248 /* successful write: set cache */ 1249 chip->ac97_regs[idx] = val; 1250 return; 1251 } 1252 } 1253 dev_dbg(chip->card->dev, "nm256: ac97 codec not ready..\n"); 1254} 1255 1256/* static resolution table */ 1257static struct snd_ac97_res_table nm256_res_table[] = { 1258 { AC97_MASTER, 0x1f1f }, 1259 { AC97_HEADPHONE, 0x1f1f }, 1260 { AC97_MASTER_MONO, 0x001f }, 1261 { AC97_PC_BEEP, 0x001f }, 1262 { AC97_PHONE, 0x001f }, 1263 { AC97_MIC, 0x001f }, 1264 { AC97_LINE, 0x1f1f }, 1265 { AC97_CD, 0x1f1f }, 1266 { AC97_VIDEO, 0x1f1f }, 1267 { AC97_AUX, 0x1f1f }, 1268 { AC97_PCM, 0x1f1f }, 1269 { AC97_REC_GAIN, 0x0f0f }, 1270 { } /* terminator */ 1271}; 1272 1273/* initialize the ac97 into a known state */ 1274static void 1275snd_nm256_ac97_reset(struct snd_ac97 *ac97) 1276{ 1277 struct nm256 *chip = ac97->private_data; 1278 1279 /* Reset the mixer. 'Tis magic! */ 1280 snd_nm256_writeb(chip, 0x6c0, 1); 1281 if (! chip->reset_workaround) { 1282 /* Dell latitude LS will lock up by this */ 1283 snd_nm256_writeb(chip, 0x6cc, 0x87); 1284 } 1285 if (! chip->reset_workaround_2) { 1286 /* Dell latitude CSx will lock up by this */ 1287 snd_nm256_writeb(chip, 0x6cc, 0x80); 1288 snd_nm256_writeb(chip, 0x6cc, 0x0); 1289 } 1290 if (! chip->in_resume) { 1291 int i; 1292 for (i = 0; i < ARRAY_SIZE(nm256_ac97_init_val); i++) { 1293 /* preload the cache, so as to avoid even a single 1294 * read of the mixer regs 1295 */ 1296 snd_nm256_ac97_write(ac97, nm256_ac97_init_val[i].reg, 1297 nm256_ac97_init_val[i].value); 1298 } 1299 } 1300} 1301 1302/* create an ac97 mixer interface */ 1303static int 1304snd_nm256_mixer(struct nm256 *chip) 1305{ 1306 struct snd_ac97_bus *pbus; 1307 struct snd_ac97_template ac97; 1308 int err; 1309 static struct snd_ac97_bus_ops ops = { 1310 .reset = snd_nm256_ac97_reset, 1311 .write = snd_nm256_ac97_write, 1312 .read = snd_nm256_ac97_read, 1313 }; 1314 1315 chip->ac97_regs = kcalloc(ARRAY_SIZE(nm256_ac97_init_val), 1316 sizeof(short), GFP_KERNEL); 1317 if (! chip->ac97_regs) 1318 return -ENOMEM; 1319 1320 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0) 1321 return err; 1322 1323 memset(&ac97, 0, sizeof(ac97)); 1324 ac97.scaps = AC97_SCAP_AUDIO; /* we support audio! */ 1325 ac97.private_data = chip; 1326 ac97.res_table = nm256_res_table; 1327 pbus->no_vra = 1; 1328 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97); 1329 if (err < 0) 1330 return err; 1331 if (! (chip->ac97->id & (0xf0000000))) { 1332 /* looks like an invalid id */ 1333 sprintf(chip->card->mixername, "%s AC97", chip->card->driver); 1334 } 1335 return 0; 1336} 1337 1338/* 1339 * See if the signature left by the NM256 BIOS is intact; if so, we use 1340 * the associated address as the end of our audio buffer in the video 1341 * RAM. 1342 */ 1343 1344static int 1345snd_nm256_peek_for_sig(struct nm256 *chip) 1346{ 1347 /* The signature is located 1K below the end of video RAM. */ 1348 void __iomem *temp; 1349 /* Default buffer end is 5120 bytes below the top of RAM. */ 1350 unsigned long pointer_found = chip->buffer_end - 0x1400; 1351 u32 sig; 1352 1353 temp = ioremap_nocache(chip->buffer_addr + chip->buffer_end - 0x400, 16); 1354 if (temp == NULL) { 1355 dev_err(chip->card->dev, 1356 "Unable to scan for card signature in video RAM\n"); 1357 return -EBUSY; 1358 } 1359 1360 sig = readl(temp); 1361 if ((sig & NM_SIG_MASK) == NM_SIGNATURE) { 1362 u32 pointer = readl(temp + 4); 1363 1364 /* 1365 * If it's obviously invalid, don't use it 1366 */ 1367 if (pointer == 0xffffffff || 1368 pointer < chip->buffer_size || 1369 pointer > chip->buffer_end) { 1370 dev_err(chip->card->dev, 1371 "invalid signature found: 0x%x\n", pointer); 1372 iounmap(temp); 1373 return -ENODEV; 1374 } else { 1375 pointer_found = pointer; 1376 dev_info(chip->card->dev, 1377 "found card signature in video RAM: 0x%x\n", 1378 pointer); 1379 } 1380 } 1381 1382 iounmap(temp); 1383 chip->buffer_end = pointer_found; 1384 1385 return 0; 1386} 1387 1388#ifdef CONFIG_PM_SLEEP 1389/* 1390 * APM event handler, so the card is properly reinitialized after a power 1391 * event. 1392 */ 1393static int nm256_suspend(struct device *dev) 1394{ 1395 struct snd_card *card = dev_get_drvdata(dev); 1396 struct nm256 *chip = card->private_data; 1397 1398 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1399 snd_pcm_suspend_all(chip->pcm); 1400 snd_ac97_suspend(chip->ac97); 1401 chip->coeffs_current = 0; 1402 return 0; 1403} 1404 1405static int nm256_resume(struct device *dev) 1406{ 1407 struct snd_card *card = dev_get_drvdata(dev); 1408 struct nm256 *chip = card->private_data; 1409 int i; 1410 1411 /* Perform a full reset on the hardware */ 1412 chip->in_resume = 1; 1413 1414 snd_nm256_init_chip(chip); 1415 1416 /* restore ac97 */ 1417 snd_ac97_resume(chip->ac97); 1418 1419 for (i = 0; i < 2; i++) { 1420 struct nm256_stream *s = &chip->streams[i]; 1421 if (s->substream && s->suspended) { 1422 spin_lock_irq(&chip->reg_lock); 1423 snd_nm256_set_format(chip, s, s->substream); 1424 spin_unlock_irq(&chip->reg_lock); 1425 } 1426 } 1427 1428 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1429 chip->in_resume = 0; 1430 return 0; 1431} 1432 1433static SIMPLE_DEV_PM_OPS(nm256_pm, nm256_suspend, nm256_resume); 1434#define NM256_PM_OPS &nm256_pm 1435#else 1436#define NM256_PM_OPS NULL 1437#endif /* CONFIG_PM_SLEEP */ 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 iounmap(chip->cport); 1450 iounmap(chip->buffer); 1451 release_and_free_resource(chip->res_cport); 1452 release_and_free_resource(chip->res_buffer); 1453 1454 pci_disable_device(chip->pci); 1455 kfree(chip->ac97_regs); 1456 kfree(chip); 1457 return 0; 1458} 1459 1460static int snd_nm256_dev_free(struct snd_device *device) 1461{ 1462 struct nm256 *chip = device->device_data; 1463 return snd_nm256_free(chip); 1464} 1465 1466static int 1467snd_nm256_create(struct snd_card *card, struct pci_dev *pci, 1468 struct nm256 **chip_ret) 1469{ 1470 struct nm256 *chip; 1471 int err, pval; 1472 static struct snd_device_ops ops = { 1473 .dev_free = snd_nm256_dev_free, 1474 }; 1475 u32 addr; 1476 1477 *chip_ret = NULL; 1478 1479 if ((err = pci_enable_device(pci)) < 0) 1480 return err; 1481 1482 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 1483 if (chip == NULL) { 1484 pci_disable_device(pci); 1485 return -ENOMEM; 1486 } 1487 1488 chip->card = card; 1489 chip->pci = pci; 1490 chip->use_cache = use_cache; 1491 spin_lock_init(&chip->reg_lock); 1492 chip->irq = -1; 1493 mutex_init(&chip->irq_mutex); 1494 1495 /* store buffer sizes in bytes */ 1496 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize = playback_bufsize * 1024; 1497 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize = capture_bufsize * 1024; 1498 1499 /* 1500 * The NM256 has two memory ports. The first port is nothing 1501 * more than a chunk of video RAM, which is used as the I/O ring 1502 * buffer. The second port has the actual juicy stuff (like the 1503 * mixer and the playback engine control registers). 1504 */ 1505 1506 chip->buffer_addr = pci_resource_start(pci, 0); 1507 chip->cport_addr = pci_resource_start(pci, 1); 1508 1509 /* Init the memory port info. */ 1510 /* remap control port (#2) */ 1511 chip->res_cport = request_mem_region(chip->cport_addr, NM_PORT2_SIZE, 1512 card->driver); 1513 if (chip->res_cport == NULL) { 1514 dev_err(card->dev, "memory region 0x%lx (size 0x%x) busy\n", 1515 chip->cport_addr, NM_PORT2_SIZE); 1516 err = -EBUSY; 1517 goto __error; 1518 } 1519 chip->cport = ioremap_nocache(chip->cport_addr, NM_PORT2_SIZE); 1520 if (chip->cport == NULL) { 1521 dev_err(card->dev, "unable to map control port %lx\n", 1522 chip->cport_addr); 1523 err = -ENOMEM; 1524 goto __error; 1525 } 1526 1527 if (!strcmp(card->driver, "NM256AV")) { 1528 /* Ok, try to see if this is a non-AC97 version of the hardware. */ 1529 pval = snd_nm256_readw(chip, NM_MIXER_PRESENCE); 1530 if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) { 1531 if (! force_ac97) { 1532 dev_err(card->dev, 1533 "no ac97 is found!\n"); 1534 dev_err(card->dev, 1535 "force the driver to load by passing in the module parameter\n"); 1536 dev_err(card->dev, 1537 " force_ac97=1\n"); 1538 dev_err(card->dev, 1539 "or try sb16, opl3sa2, or cs423x drivers instead.\n"); 1540 err = -ENXIO; 1541 goto __error; 1542 } 1543 } 1544 chip->buffer_end = 2560 * 1024; 1545 chip->interrupt = snd_nm256_interrupt; 1546 chip->mixer_status_offset = NM_MIXER_STATUS_OFFSET; 1547 chip->mixer_status_mask = NM_MIXER_READY_MASK; 1548 } else { 1549 /* Not sure if there is any relevant detect for the ZX or not. */ 1550 if (snd_nm256_readb(chip, 0xa0b) != 0) 1551 chip->buffer_end = 6144 * 1024; 1552 else 1553 chip->buffer_end = 4096 * 1024; 1554 1555 chip->interrupt = snd_nm256_interrupt_zx; 1556 chip->mixer_status_offset = NM2_MIXER_STATUS_OFFSET; 1557 chip->mixer_status_mask = NM2_MIXER_READY_MASK; 1558 } 1559 1560 chip->buffer_size = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize + 1561 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize; 1562 if (chip->use_cache) 1563 chip->buffer_size += NM_TOTAL_COEFF_COUNT * 4; 1564 else 1565 chip->buffer_size += NM_MAX_PLAYBACK_COEF_SIZE + NM_MAX_RECORD_COEF_SIZE; 1566 1567 if (buffer_top >= chip->buffer_size && buffer_top < chip->buffer_end) 1568 chip->buffer_end = buffer_top; 1569 else { 1570 /* get buffer end pointer from signature */ 1571 if ((err = snd_nm256_peek_for_sig(chip)) < 0) 1572 goto __error; 1573 } 1574 1575 chip->buffer_start = chip->buffer_end - chip->buffer_size; 1576 chip->buffer_addr += chip->buffer_start; 1577 1578 dev_info(card->dev, "Mapping port 1 from 0x%x - 0x%x\n", 1579 chip->buffer_start, chip->buffer_end); 1580 1581 chip->res_buffer = request_mem_region(chip->buffer_addr, 1582 chip->buffer_size, 1583 card->driver); 1584 if (chip->res_buffer == NULL) { 1585 dev_err(card->dev, "buffer 0x%lx (size 0x%x) busy\n", 1586 chip->buffer_addr, chip->buffer_size); 1587 err = -EBUSY; 1588 goto __error; 1589 } 1590 chip->buffer = ioremap_nocache(chip->buffer_addr, chip->buffer_size); 1591 if (chip->buffer == NULL) { 1592 err = -ENOMEM; 1593 dev_err(card->dev, "unable to map ring buffer at %lx\n", 1594 chip->buffer_addr); 1595 goto __error; 1596 } 1597 1598 /* set offsets */ 1599 addr = chip->buffer_start; 1600 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].buf = addr; 1601 addr += chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize; 1602 chip->streams[SNDRV_PCM_STREAM_CAPTURE].buf = addr; 1603 addr += chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize; 1604 if (chip->use_cache) { 1605 chip->all_coeff_buf = addr; 1606 } else { 1607 chip->coeff_buf[SNDRV_PCM_STREAM_PLAYBACK] = addr; 1608 addr += NM_MAX_PLAYBACK_COEF_SIZE; 1609 chip->coeff_buf[SNDRV_PCM_STREAM_CAPTURE] = addr; 1610 } 1611 1612 /* Fixed setting. */ 1613 chip->mixer_base = NM_MIXER_OFFSET; 1614 1615 chip->coeffs_current = 0; 1616 1617 snd_nm256_init_chip(chip); 1618 1619 // pci_set_master(pci); /* needed? */ 1620 1621 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) 1622 goto __error; 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[] = { 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 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 dev_dbg(&pci->dev, "Enabled quirk for %s.\n", 1657 snd_pci_quirk_name(q)); 1658 switch (q->value) { 1659 case NM_BLACKLISTED: 1660 dev_info(&pci->dev, 1661 "The device is blacklisted. Loading stopped\n"); 1662 return -ENODEV; 1663 case NM_RESET_WORKAROUND_2: 1664 reset_workaround_2 = 1; 1665 /* Fall-through */ 1666 case NM_RESET_WORKAROUND: 1667 reset_workaround = 1; 1668 break; 1669 } 1670 } 1671 1672 err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card); 1673 if (err < 0) 1674 return err; 1675 1676 switch (pci->device) { 1677 case PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO: 1678 strcpy(card->driver, "NM256AV"); 1679 break; 1680 case PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO: 1681 strcpy(card->driver, "NM256ZX"); 1682 break; 1683 case PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO: 1684 strcpy(card->driver, "NM256XL+"); 1685 break; 1686 default: 1687 dev_err(&pci->dev, "invalid device id 0x%x\n", pci->device); 1688 snd_card_free(card); 1689 return -EINVAL; 1690 } 1691 1692 if (vaio_hack) 1693 buffer_top = 0x25a800; /* this avoids conflicts with XFree86 server */ 1694 1695 if (playback_bufsize < 4) 1696 playback_bufsize = 4; 1697 if (playback_bufsize > 128) 1698 playback_bufsize = 128; 1699 if (capture_bufsize < 4) 1700 capture_bufsize = 4; 1701 if (capture_bufsize > 128) 1702 capture_bufsize = 128; 1703 if ((err = snd_nm256_create(card, pci, &chip)) < 0) { 1704 snd_card_free(card); 1705 return err; 1706 } 1707 card->private_data = chip; 1708 1709 if (reset_workaround) { 1710 dev_dbg(&pci->dev, "reset_workaround activated\n"); 1711 chip->reset_workaround = 1; 1712 } 1713 1714 if (reset_workaround_2) { 1715 dev_dbg(&pci->dev, "reset_workaround_2 activated\n"); 1716 chip->reset_workaround_2 = 1; 1717 } 1718 1719 if ((err = snd_nm256_pcm(chip, 0)) < 0 || 1720 (err = snd_nm256_mixer(chip)) < 0) { 1721 snd_card_free(card); 1722 return err; 1723 } 1724 1725 sprintf(card->shortname, "NeoMagic %s", card->driver); 1726 sprintf(card->longname, "%s at 0x%lx & 0x%lx, irq %d", 1727 card->shortname, 1728 chip->buffer_addr, chip->cport_addr, chip->irq); 1729 1730 if ((err = snd_card_register(card)) < 0) { 1731 snd_card_free(card); 1732 return err; 1733 } 1734 1735 pci_set_drvdata(pci, card); 1736 return 0; 1737} 1738 1739static void snd_nm256_remove(struct pci_dev *pci) 1740{ 1741 snd_card_free(pci_get_drvdata(pci)); 1742} 1743 1744 1745static struct pci_driver nm256_driver = { 1746 .name = KBUILD_MODNAME, 1747 .id_table = snd_nm256_ids, 1748 .probe = snd_nm256_probe, 1749 .remove = snd_nm256_remove, 1750 .driver = { 1751 .pm = NM256_PM_OPS, 1752 }, 1753}; 1754 1755module_pci_driver(nm256_driver); 1756