1 /* 2 * Driver for NeoMagic 256AV and 256ZX chipsets. 3 * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de> 4 * 5 * Based on nm256_audio.c OSS driver in linux kernel. 6 * The original author of OSS nm256 driver wishes to remain anonymous, 7 * so I just put my acknoledgment to him/her here. 8 * The original author's web page is found at 9 * http://www.uglx.org/sony.html 10 * 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 */ 26 27 #include <sound/driver.h> 28 #include <asm/io.h> 29 #include <linux/delay.h> 30 #include <linux/interrupt.h> 31 #include <linux/init.h> 32 #include <linux/pci.h> 33 #include <linux/slab.h> 34 #include <linux/moduleparam.h> 35 #include <sound/core.h> 36 #include <sound/info.h> 37 #include <sound/control.h> 38 #include <sound/pcm.h> 39 #include <sound/ac97_codec.h> 40 #include <sound/initval.h> 41 42 #define CARD_NAME "NeoMagic 256AV/ZX" 43 #define DRIVER_NAME "NM256" 44 45 MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>"); 46 MODULE_DESCRIPTION("NeoMagic NM256AV/ZX"); 47 MODULE_LICENSE("GPL"); 48 MODULE_SUPPORTED_DEVICE("{{NeoMagic,NM256AV}," 49 "{NeoMagic,NM256ZX}}"); 50 51 /* 52 * some compile conditions. 53 */ 54 55 static int index = SNDRV_DEFAULT_IDX1; /* Index */ 56 static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ 57 static int playback_bufsize = 16; 58 static int capture_bufsize = 16; 59 static int force_ac97; /* disabled as default */ 60 static int buffer_top; /* not specified */ 61 static int use_cache; /* disabled */ 62 static int vaio_hack; /* disabled */ 63 static int reset_workaround; 64 static int reset_workaround_2; 65 66 module_param(index, int, 0444); 67 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); 68 module_param(id, charp, 0444); 69 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); 70 module_param(playback_bufsize, int, 0444); 71 MODULE_PARM_DESC(playback_bufsize, "DAC frame size in kB for " CARD_NAME " soundcard."); 72 module_param(capture_bufsize, int, 0444); 73 MODULE_PARM_DESC(capture_bufsize, "ADC frame size in kB for " CARD_NAME " soundcard."); 74 module_param(force_ac97, bool, 0444); 75 MODULE_PARM_DESC(force_ac97, "Force to use AC97 codec for " CARD_NAME " soundcard."); 76 module_param(buffer_top, int, 0444); 77 MODULE_PARM_DESC(buffer_top, "Set the top address of audio buffer for " CARD_NAME " soundcard."); 78 module_param(use_cache, bool, 0444); 79 MODULE_PARM_DESC(use_cache, "Enable the cache for coefficient table access."); 80 module_param(vaio_hack, bool, 0444); 81 MODULE_PARM_DESC(vaio_hack, "Enable workaround for Sony VAIO notebooks."); 82 module_param(reset_workaround, bool, 0444); 83 MODULE_PARM_DESC(reset_workaround, "Enable AC97 RESET workaround for some laptops."); 84 module_param(reset_workaround_2, bool, 0444); 85 MODULE_PARM_DESC(reset_workaround_2, "Enable extended AC97 RESET workaround for some other laptops."); 86 87 /* just for backward compatibility */ 88 static int enable; 89 module_param(enable, bool, 0444); 90 91 92 93 /* 94 * hw definitions 95 */ 96 97 /* The BIOS signature. */ 98 #define NM_SIGNATURE 0x4e4d0000 99 /* Signature mask. */ 100 #define NM_SIG_MASK 0xffff0000 101 102 /* Size of the second memory area. */ 103 #define NM_PORT2_SIZE 4096 104 105 /* The base offset of the mixer in the second memory area. */ 106 #define NM_MIXER_OFFSET 0x600 107 108 /* The maximum size of a coefficient entry. */ 109 #define NM_MAX_PLAYBACK_COEF_SIZE 0x5000 110 #define NM_MAX_RECORD_COEF_SIZE 0x1260 111 112 /* The interrupt register. */ 113 #define NM_INT_REG 0xa04 114 /* And its bits. */ 115 #define NM_PLAYBACK_INT 0x40 116 #define NM_RECORD_INT 0x100 117 #define NM_MISC_INT_1 0x4000 118 #define NM_MISC_INT_2 0x1 119 #define NM_ACK_INT(chip, X) snd_nm256_writew(chip, NM_INT_REG, (X) << 1) 120 121 /* The AV's "mixer ready" status bit and location. */ 122 #define NM_MIXER_STATUS_OFFSET 0xa04 123 #define NM_MIXER_READY_MASK 0x0800 124 #define NM_MIXER_PRESENCE 0xa06 125 #define NM_PRESENCE_MASK 0x0050 126 #define NM_PRESENCE_VALUE 0x0040 127 128 /* 129 * For the ZX. It uses the same interrupt register, but it holds 32 130 * bits instead of 16. 131 */ 132 #define NM2_PLAYBACK_INT 0x10000 133 #define NM2_RECORD_INT 0x80000 134 #define NM2_MISC_INT_1 0x8 135 #define NM2_MISC_INT_2 0x2 136 #define NM2_ACK_INT(chip, X) snd_nm256_writel(chip, NM_INT_REG, (X)) 137 138 /* The ZX's "mixer ready" status bit and location. */ 139 #define NM2_MIXER_STATUS_OFFSET 0xa06 140 #define NM2_MIXER_READY_MASK 0x0800 141 142 /* The playback registers start from here. */ 143 #define NM_PLAYBACK_REG_OFFSET 0x0 144 /* The record registers start from here. */ 145 #define NM_RECORD_REG_OFFSET 0x200 146 147 /* The rate register is located 2 bytes from the start of the register area. */ 148 #define NM_RATE_REG_OFFSET 2 149 150 /* Mono/stereo flag, number of bits on playback, and rate mask. */ 151 #define NM_RATE_STEREO 1 152 #define NM_RATE_BITS_16 2 153 #define NM_RATE_MASK 0xf0 154 155 /* Playback enable register. */ 156 #define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1) 157 #define NM_PLAYBACK_ENABLE_FLAG 1 158 #define NM_PLAYBACK_ONESHOT 2 159 #define NM_PLAYBACK_FREERUN 4 160 161 /* Mutes the audio output. */ 162 #define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18) 163 #define NM_AUDIO_MUTE_LEFT 0x8000 164 #define NM_AUDIO_MUTE_RIGHT 0x0080 165 166 /* Recording enable register. */ 167 #define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0) 168 #define NM_RECORD_ENABLE_FLAG 1 169 #define NM_RECORD_FREERUN 2 170 171 /* coefficient buffer pointer */ 172 #define NM_COEFF_START_OFFSET 0x1c 173 #define NM_COEFF_END_OFFSET 0x20 174 175 /* DMA buffer offsets */ 176 #define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4) 177 #define NM_RBUFFER_END (NM_RECORD_REG_OFFSET + 0x10) 178 #define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc) 179 #define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8) 180 181 #define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4) 182 #define NM_PBUFFER_END (NM_PLAYBACK_REG_OFFSET + 0x14) 183 #define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc) 184 #define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8) 185 186 struct nm256_stream { 187 188 struct nm256 *chip; 189 struct snd_pcm_substream *substream; 190 int running; 191 int suspended; 192 193 u32 buf; /* offset from chip->buffer */ 194 int bufsize; /* buffer size in bytes */ 195 void __iomem *bufptr; /* mapped pointer */ 196 unsigned long bufptr_addr; /* physical address of the mapped pointer */ 197 198 int dma_size; /* buffer size of the substream in bytes */ 199 int period_size; /* period size in bytes */ 200 int periods; /* # of periods */ 201 int shift; /* bit shifts */ 202 int cur_period; /* current period # */ 203 204 }; 205 206 struct nm256 { 207 208 struct snd_card *card; 209 210 void __iomem *cport; /* control port */ 211 struct resource *res_cport; /* its resource */ 212 unsigned long cport_addr; /* physical address */ 213 214 void __iomem *buffer; /* buffer */ 215 struct resource *res_buffer; /* its resource */ 216 unsigned long buffer_addr; /* buffer phyiscal address */ 217 218 u32 buffer_start; /* start offset from pci resource 0 */ 219 u32 buffer_end; /* end offset */ 220 u32 buffer_size; /* total buffer size */ 221 222 u32 all_coeff_buf; /* coefficient buffer */ 223 u32 coeff_buf[2]; /* coefficient buffer for each stream */ 224 225 unsigned int coeffs_current: 1; /* coeff. table is loaded? */ 226 unsigned int use_cache: 1; /* use one big coef. table */ 227 unsigned int reset_workaround: 1; /* Workaround for some laptops to avoid freeze */ 228 unsigned int reset_workaround_2: 1; /* Extended workaround for some other laptops to avoid freeze */ 229 230 int mixer_base; /* register offset of ac97 mixer */ 231 int mixer_status_offset; /* offset of mixer status reg. */ 232 int mixer_status_mask; /* bit mask to test the mixer status */ 233 234 int irq; 235 int irq_acks; 236 irqreturn_t (*interrupt)(int, void *, struct pt_regs *); 237 int badintrcount; /* counter to check bogus interrupts */ 238 struct semaphore irq_mutex; 239 240 struct nm256_stream streams[2]; 241 242 struct snd_ac97 *ac97; 243 244 struct snd_pcm *pcm; 245 246 struct pci_dev *pci; 247 248 spinlock_t reg_lock; 249 250 }; 251 252 253 /* 254 * include coefficient table 255 */ 256 #include "nm256_coef.c" 257 258 259 /* 260 * PCI ids 261 */ 262 static struct pci_device_id snd_nm256_ids[] = { 263 {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 264 {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 265 {PCI_VENDOR_ID_NEOMAGIC, PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 266 {0,}, 267 }; 268 269 MODULE_DEVICE_TABLE(pci, snd_nm256_ids); 270 271 272 /* 273 * lowlvel stuffs 274 */ 275 276 static inline u8 277 snd_nm256_readb(struct nm256 *chip, int offset) 278 { 279 return readb(chip->cport + offset); 280 } 281 282 static inline u16 283 snd_nm256_readw(struct nm256 *chip, int offset) 284 { 285 return readw(chip->cport + offset); 286 } 287 288 static inline u32 289 snd_nm256_readl(struct nm256 *chip, int offset) 290 { 291 return readl(chip->cport + offset); 292 } 293 294 static inline void 295 snd_nm256_writeb(struct nm256 *chip, int offset, u8 val) 296 { 297 writeb(val, chip->cport + offset); 298 } 299 300 static inline void 301 snd_nm256_writew(struct nm256 *chip, int offset, u16 val) 302 { 303 writew(val, chip->cport + offset); 304 } 305 306 static inline void 307 snd_nm256_writel(struct nm256 *chip, int offset, u32 val) 308 { 309 writel(val, chip->cport + offset); 310 } 311 312 static inline void 313 snd_nm256_write_buffer(struct nm256 *chip, void *src, int offset, int size) 314 { 315 offset -= chip->buffer_start; 316 #ifdef CONFIG_SND_DEBUG 317 if (offset < 0 || offset >= chip->buffer_size) { 318 snd_printk(KERN_ERR "write_buffer invalid offset = %d size = %d\n", 319 offset, size); 320 return; 321 } 322 #endif 323 memcpy_toio(chip->buffer + offset, src, size); 324 } 325 326 /* 327 * coefficient handlers -- what a magic! 328 */ 329 330 static u16 331 snd_nm256_get_start_offset(int which) 332 { 333 u16 offset = 0; 334 while (which-- > 0) 335 offset += coefficient_sizes[which]; 336 return offset; 337 } 338 339 static void 340 snd_nm256_load_one_coefficient(struct nm256 *chip, int stream, u32 port, int which) 341 { 342 u32 coeff_buf = chip->coeff_buf[stream]; 343 u16 offset = snd_nm256_get_start_offset(which); 344 u16 size = coefficient_sizes[which]; 345 346 snd_nm256_write_buffer(chip, coefficients + offset, coeff_buf, size); 347 snd_nm256_writel(chip, port, coeff_buf); 348 /* ??? Record seems to behave differently than playback. */ 349 if (stream == SNDRV_PCM_STREAM_PLAYBACK) 350 size--; 351 snd_nm256_writel(chip, port + 4, coeff_buf + size); 352 } 353 354 static void 355 snd_nm256_load_coefficient(struct nm256 *chip, int stream, int number) 356 { 357 /* The enable register for the specified engine. */ 358 u32 poffset = (stream == SNDRV_PCM_STREAM_CAPTURE ? 359 NM_RECORD_ENABLE_REG : NM_PLAYBACK_ENABLE_REG); 360 u32 addr = NM_COEFF_START_OFFSET; 361 362 addr += (stream == SNDRV_PCM_STREAM_CAPTURE ? 363 NM_RECORD_REG_OFFSET : NM_PLAYBACK_REG_OFFSET); 364 365 if (snd_nm256_readb(chip, poffset) & 1) { 366 snd_printd("NM256: Engine was enabled while loading coefficients!\n"); 367 return; 368 } 369 370 /* The recording engine uses coefficient values 8-15. */ 371 number &= 7; 372 if (stream == SNDRV_PCM_STREAM_CAPTURE) 373 number += 8; 374 375 if (! chip->use_cache) { 376 snd_nm256_load_one_coefficient(chip, stream, addr, number); 377 return; 378 } 379 if (! chip->coeffs_current) { 380 snd_nm256_write_buffer(chip, coefficients, chip->all_coeff_buf, 381 NM_TOTAL_COEFF_COUNT * 4); 382 chip->coeffs_current = 1; 383 } else { 384 u32 base = chip->all_coeff_buf; 385 u32 offset = snd_nm256_get_start_offset(number); 386 u32 end_offset = offset + coefficient_sizes[number]; 387 snd_nm256_writel(chip, addr, base + offset); 388 if (stream == SNDRV_PCM_STREAM_PLAYBACK) 389 end_offset--; 390 snd_nm256_writel(chip, addr + 4, base + end_offset); 391 } 392 } 393 394 395 /* The actual rates supported by the card. */ 396 static unsigned int samplerates[8] = { 397 8000, 11025, 16000, 22050, 24000, 32000, 44100, 48000, 398 }; 399 static struct snd_pcm_hw_constraint_list constraints_rates = { 400 .count = ARRAY_SIZE(samplerates), 401 .list = samplerates, 402 .mask = 0, 403 }; 404 405 /* 406 * return the index of the target rate 407 */ 408 static int 409 snd_nm256_fixed_rate(unsigned int rate) 410 { 411 unsigned int i; 412 for (i = 0; i < ARRAY_SIZE(samplerates); i++) { 413 if (rate == samplerates[i]) 414 return i; 415 } 416 snd_BUG(); 417 return 0; 418 } 419 420 /* 421 * set sample rate and format 422 */ 423 static void 424 snd_nm256_set_format(struct nm256 *chip, struct nm256_stream *s, 425 struct snd_pcm_substream *substream) 426 { 427 struct snd_pcm_runtime *runtime = substream->runtime; 428 int rate_index = snd_nm256_fixed_rate(runtime->rate); 429 unsigned char ratebits = (rate_index << 4) & NM_RATE_MASK; 430 431 s->shift = 0; 432 if (snd_pcm_format_width(runtime->format) == 16) { 433 ratebits |= NM_RATE_BITS_16; 434 s->shift++; 435 } 436 if (runtime->channels > 1) { 437 ratebits |= NM_RATE_STEREO; 438 s->shift++; 439 } 440 441 runtime->rate = samplerates[rate_index]; 442 443 switch (substream->stream) { 444 case SNDRV_PCM_STREAM_PLAYBACK: 445 snd_nm256_load_coefficient(chip, 0, rate_index); /* 0 = playback */ 446 snd_nm256_writeb(chip, 447 NM_PLAYBACK_REG_OFFSET + NM_RATE_REG_OFFSET, 448 ratebits); 449 break; 450 case SNDRV_PCM_STREAM_CAPTURE: 451 snd_nm256_load_coefficient(chip, 1, rate_index); /* 1 = record */ 452 snd_nm256_writeb(chip, 453 NM_RECORD_REG_OFFSET + NM_RATE_REG_OFFSET, 454 ratebits); 455 break; 456 } 457 } 458 459 /* acquire interrupt */ 460 static int snd_nm256_acquire_irq(struct nm256 *chip) 461 { 462 down(&chip->irq_mutex); 463 if (chip->irq < 0) { 464 if (request_irq(chip->pci->irq, chip->interrupt, SA_INTERRUPT|SA_SHIRQ, 465 chip->card->driver, chip)) { 466 snd_printk(KERN_ERR "unable to grab IRQ %d\n", chip->pci->irq); 467 up(&chip->irq_mutex); 468 return -EBUSY; 469 } 470 chip->irq = chip->pci->irq; 471 } 472 chip->irq_acks++; 473 up(&chip->irq_mutex); 474 return 0; 475 } 476 477 /* release interrupt */ 478 static void snd_nm256_release_irq(struct nm256 *chip) 479 { 480 down(&chip->irq_mutex); 481 if (chip->irq_acks > 0) 482 chip->irq_acks--; 483 if (chip->irq_acks == 0 && chip->irq >= 0) { 484 free_irq(chip->irq, chip); 485 chip->irq = -1; 486 } 487 up(&chip->irq_mutex); 488 } 489 490 /* 491 * start / stop 492 */ 493 494 /* update the watermark (current period) */ 495 static void snd_nm256_pcm_mark(struct nm256 *chip, struct nm256_stream *s, int reg) 496 { 497 s->cur_period++; 498 s->cur_period %= s->periods; 499 snd_nm256_writel(chip, reg, s->buf + s->cur_period * s->period_size); 500 } 501 502 #define snd_nm256_playback_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_PBUFFER_WMARK) 503 #define snd_nm256_capture_mark(chip, s) snd_nm256_pcm_mark(chip, s, NM_RBUFFER_WMARK) 504 505 static void 506 snd_nm256_playback_start(struct nm256 *chip, struct nm256_stream *s, 507 struct snd_pcm_substream *substream) 508 { 509 /* program buffer pointers */ 510 snd_nm256_writel(chip, NM_PBUFFER_START, s->buf); 511 snd_nm256_writel(chip, NM_PBUFFER_END, s->buf + s->dma_size - (1 << s->shift)); 512 snd_nm256_writel(chip, NM_PBUFFER_CURRP, s->buf); 513 snd_nm256_playback_mark(chip, s); 514 515 /* Enable playback engine and interrupts. */ 516 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 517 NM_PLAYBACK_ENABLE_FLAG | NM_PLAYBACK_FREERUN); 518 /* Enable both channels. */ 519 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 0x0); 520 } 521 522 static void 523 snd_nm256_capture_start(struct nm256 *chip, struct nm256_stream *s, 524 struct snd_pcm_substream *substream) 525 { 526 /* program buffer pointers */ 527 snd_nm256_writel(chip, NM_RBUFFER_START, s->buf); 528 snd_nm256_writel(chip, NM_RBUFFER_END, s->buf + s->dma_size); 529 snd_nm256_writel(chip, NM_RBUFFER_CURRP, s->buf); 530 snd_nm256_capture_mark(chip, s); 531 532 /* Enable playback engine and interrupts. */ 533 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 534 NM_RECORD_ENABLE_FLAG | NM_RECORD_FREERUN); 535 } 536 537 /* Stop the play engine. */ 538 static void 539 snd_nm256_playback_stop(struct nm256 *chip) 540 { 541 /* Shut off sound from both channels. */ 542 snd_nm256_writew(chip, NM_AUDIO_MUTE_REG, 543 NM_AUDIO_MUTE_LEFT | NM_AUDIO_MUTE_RIGHT); 544 /* Disable play engine. */ 545 snd_nm256_writeb(chip, NM_PLAYBACK_ENABLE_REG, 0); 546 } 547 548 static void 549 snd_nm256_capture_stop(struct nm256 *chip) 550 { 551 /* Disable recording engine. */ 552 snd_nm256_writeb(chip, NM_RECORD_ENABLE_REG, 0); 553 } 554 555 static int 556 snd_nm256_playback_trigger(struct snd_pcm_substream *substream, int cmd) 557 { 558 struct nm256 *chip = snd_pcm_substream_chip(substream); 559 struct nm256_stream *s = substream->runtime->private_data; 560 int err = 0; 561 562 snd_assert(s != NULL, return -ENXIO); 563 564 spin_lock(&chip->reg_lock); 565 switch (cmd) { 566 case SNDRV_PCM_TRIGGER_RESUME: 567 s->suspended = 0; 568 /* fallthru */ 569 case SNDRV_PCM_TRIGGER_START: 570 if (! s->running) { 571 snd_nm256_playback_start(chip, s, substream); 572 s->running = 1; 573 } 574 break; 575 case SNDRV_PCM_TRIGGER_SUSPEND: 576 s->suspended = 1; 577 /* fallthru */ 578 case SNDRV_PCM_TRIGGER_STOP: 579 if (s->running) { 580 snd_nm256_playback_stop(chip); 581 s->running = 0; 582 } 583 break; 584 default: 585 err = -EINVAL; 586 break; 587 } 588 spin_unlock(&chip->reg_lock); 589 return err; 590 } 591 592 static int 593 snd_nm256_capture_trigger(struct snd_pcm_substream *substream, int cmd) 594 { 595 struct nm256 *chip = snd_pcm_substream_chip(substream); 596 struct nm256_stream *s = substream->runtime->private_data; 597 int err = 0; 598 599 snd_assert(s != NULL, return -ENXIO); 600 601 spin_lock(&chip->reg_lock); 602 switch (cmd) { 603 case SNDRV_PCM_TRIGGER_START: 604 case SNDRV_PCM_TRIGGER_RESUME: 605 if (! s->running) { 606 snd_nm256_capture_start(chip, s, substream); 607 s->running = 1; 608 } 609 break; 610 case SNDRV_PCM_TRIGGER_STOP: 611 case SNDRV_PCM_TRIGGER_SUSPEND: 612 if (s->running) { 613 snd_nm256_capture_stop(chip); 614 s->running = 0; 615 } 616 break; 617 default: 618 err = -EINVAL; 619 break; 620 } 621 spin_unlock(&chip->reg_lock); 622 return err; 623 } 624 625 626 /* 627 * prepare playback/capture channel 628 */ 629 static int snd_nm256_pcm_prepare(struct snd_pcm_substream *substream) 630 { 631 struct nm256 *chip = snd_pcm_substream_chip(substream); 632 struct snd_pcm_runtime *runtime = substream->runtime; 633 struct nm256_stream *s = runtime->private_data; 634 635 snd_assert(s, return -ENXIO); 636 s->dma_size = frames_to_bytes(runtime, substream->runtime->buffer_size); 637 s->period_size = frames_to_bytes(runtime, substream->runtime->period_size); 638 s->periods = substream->runtime->periods; 639 s->cur_period = 0; 640 641 spin_lock_irq(&chip->reg_lock); 642 s->running = 0; 643 snd_nm256_set_format(chip, s, substream); 644 spin_unlock_irq(&chip->reg_lock); 645 646 return 0; 647 } 648 649 650 /* 651 * get the current pointer 652 */ 653 static snd_pcm_uframes_t 654 snd_nm256_playback_pointer(struct snd_pcm_substream *substream) 655 { 656 struct nm256 *chip = snd_pcm_substream_chip(substream); 657 struct nm256_stream *s = substream->runtime->private_data; 658 unsigned long curp; 659 660 snd_assert(s, return 0); 661 curp = snd_nm256_readl(chip, NM_PBUFFER_CURRP) - (unsigned long)s->buf; 662 curp %= s->dma_size; 663 return bytes_to_frames(substream->runtime, curp); 664 } 665 666 static snd_pcm_uframes_t 667 snd_nm256_capture_pointer(struct snd_pcm_substream *substream) 668 { 669 struct nm256 *chip = snd_pcm_substream_chip(substream); 670 struct nm256_stream *s = substream->runtime->private_data; 671 unsigned long curp; 672 673 snd_assert(s != NULL, return 0); 674 curp = snd_nm256_readl(chip, NM_RBUFFER_CURRP) - (unsigned long)s->buf; 675 curp %= s->dma_size; 676 return bytes_to_frames(substream->runtime, curp); 677 } 678 679 /* Remapped I/O space can be accessible as pointer on i386 */ 680 /* This might be changed in the future */ 681 #ifndef __i386__ 682 /* 683 * silence / copy for playback 684 */ 685 static int 686 snd_nm256_playback_silence(struct snd_pcm_substream *substream, 687 int channel, /* not used (interleaved data) */ 688 snd_pcm_uframes_t pos, 689 snd_pcm_uframes_t count) 690 { 691 struct snd_pcm_runtime *runtime = substream->runtime; 692 struct nm256_stream *s = runtime->private_data; 693 count = frames_to_bytes(runtime, count); 694 pos = frames_to_bytes(runtime, pos); 695 memset_io(s->bufptr + pos, 0, count); 696 return 0; 697 } 698 699 static int 700 snd_nm256_playback_copy(struct snd_pcm_substream *substream, 701 int channel, /* not used (interleaved data) */ 702 snd_pcm_uframes_t pos, 703 void __user *src, 704 snd_pcm_uframes_t count) 705 { 706 struct snd_pcm_runtime *runtime = substream->runtime; 707 struct nm256_stream *s = runtime->private_data; 708 count = frames_to_bytes(runtime, count); 709 pos = frames_to_bytes(runtime, pos); 710 if (copy_from_user_toio(s->bufptr + pos, src, count)) 711 return -EFAULT; 712 return 0; 713 } 714 715 /* 716 * copy to user 717 */ 718 static int 719 snd_nm256_capture_copy(struct snd_pcm_substream *substream, 720 int channel, /* not used (interleaved data) */ 721 snd_pcm_uframes_t pos, 722 void __user *dst, 723 snd_pcm_uframes_t count) 724 { 725 struct snd_pcm_runtime *runtime = substream->runtime; 726 struct nm256_stream *s = runtime->private_data; 727 count = frames_to_bytes(runtime, count); 728 pos = frames_to_bytes(runtime, pos); 729 if (copy_to_user_fromio(dst, s->bufptr + pos, count)) 730 return -EFAULT; 731 return 0; 732 } 733 734 #endif /* !__i386__ */ 735 736 737 /* 738 * update playback/capture watermarks 739 */ 740 741 /* spinlock held! */ 742 static void 743 snd_nm256_playback_update(struct nm256 *chip) 744 { 745 struct nm256_stream *s; 746 747 s = &chip->streams[SNDRV_PCM_STREAM_PLAYBACK]; 748 if (s->running && s->substream) { 749 spin_unlock(&chip->reg_lock); 750 snd_pcm_period_elapsed(s->substream); 751 spin_lock(&chip->reg_lock); 752 snd_nm256_playback_mark(chip, s); 753 } 754 } 755 756 /* spinlock held! */ 757 static void 758 snd_nm256_capture_update(struct nm256 *chip) 759 { 760 struct nm256_stream *s; 761 762 s = &chip->streams[SNDRV_PCM_STREAM_CAPTURE]; 763 if (s->running && s->substream) { 764 spin_unlock(&chip->reg_lock); 765 snd_pcm_period_elapsed(s->substream); 766 spin_lock(&chip->reg_lock); 767 snd_nm256_capture_mark(chip, s); 768 } 769 } 770 771 /* 772 * hardware info 773 */ 774 static struct snd_pcm_hardware snd_nm256_playback = 775 { 776 .info = SNDRV_PCM_INFO_MMAP_IOMEM |SNDRV_PCM_INFO_MMAP_VALID | 777 SNDRV_PCM_INFO_INTERLEAVED | 778 /*SNDRV_PCM_INFO_PAUSE |*/ 779 SNDRV_PCM_INFO_RESUME, 780 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 781 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000, 782 .rate_min = 8000, 783 .rate_max = 48000, 784 .channels_min = 1, 785 .channels_max = 2, 786 .periods_min = 2, 787 .periods_max = 1024, 788 .buffer_bytes_max = 128 * 1024, 789 .period_bytes_min = 256, 790 .period_bytes_max = 128 * 1024, 791 }; 792 793 static struct snd_pcm_hardware snd_nm256_capture = 794 { 795 .info = SNDRV_PCM_INFO_MMAP_IOMEM | SNDRV_PCM_INFO_MMAP_VALID | 796 SNDRV_PCM_INFO_INTERLEAVED | 797 /*SNDRV_PCM_INFO_PAUSE |*/ 798 SNDRV_PCM_INFO_RESUME, 799 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, 800 .rates = SNDRV_PCM_RATE_KNOT/*24k*/ | SNDRV_PCM_RATE_8000_48000, 801 .rate_min = 8000, 802 .rate_max = 48000, 803 .channels_min = 1, 804 .channels_max = 2, 805 .periods_min = 2, 806 .periods_max = 1024, 807 .buffer_bytes_max = 128 * 1024, 808 .period_bytes_min = 256, 809 .period_bytes_max = 128 * 1024, 810 }; 811 812 813 /* set dma transfer size */ 814 static int snd_nm256_pcm_hw_params(struct snd_pcm_substream *substream, 815 struct snd_pcm_hw_params *hw_params) 816 { 817 /* area and addr are already set and unchanged */ 818 substream->runtime->dma_bytes = params_buffer_bytes(hw_params); 819 return 0; 820 } 821 822 /* 823 * open 824 */ 825 static void snd_nm256_setup_stream(struct nm256 *chip, struct nm256_stream *s, 826 struct snd_pcm_substream *substream, 827 struct snd_pcm_hardware *hw_ptr) 828 { 829 struct snd_pcm_runtime *runtime = substream->runtime; 830 831 s->running = 0; 832 runtime->hw = *hw_ptr; 833 runtime->hw.buffer_bytes_max = s->bufsize; 834 runtime->hw.period_bytes_max = s->bufsize / 2; 835 runtime->dma_area = (void __force *) s->bufptr; 836 runtime->dma_addr = s->bufptr_addr; 837 runtime->dma_bytes = s->bufsize; 838 runtime->private_data = s; 839 s->substream = substream; 840 841 snd_pcm_set_sync(substream); 842 snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 843 &constraints_rates); 844 } 845 846 static int 847 snd_nm256_playback_open(struct snd_pcm_substream *substream) 848 { 849 struct nm256 *chip = snd_pcm_substream_chip(substream); 850 851 if (snd_nm256_acquire_irq(chip) < 0) 852 return -EBUSY; 853 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_PLAYBACK], 854 substream, &snd_nm256_playback); 855 return 0; 856 } 857 858 static int 859 snd_nm256_capture_open(struct snd_pcm_substream *substream) 860 { 861 struct nm256 *chip = snd_pcm_substream_chip(substream); 862 863 if (snd_nm256_acquire_irq(chip) < 0) 864 return -EBUSY; 865 snd_nm256_setup_stream(chip, &chip->streams[SNDRV_PCM_STREAM_CAPTURE], 866 substream, &snd_nm256_capture); 867 return 0; 868 } 869 870 /* 871 * close - we don't have to do special.. 872 */ 873 static int 874 snd_nm256_playback_close(struct snd_pcm_substream *substream) 875 { 876 struct nm256 *chip = snd_pcm_substream_chip(substream); 877 878 snd_nm256_release_irq(chip); 879 return 0; 880 } 881 882 883 static int 884 snd_nm256_capture_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 /* 893 * create a pcm instance 894 */ 895 static struct snd_pcm_ops snd_nm256_playback_ops = { 896 .open = snd_nm256_playback_open, 897 .close = snd_nm256_playback_close, 898 .ioctl = snd_pcm_lib_ioctl, 899 .hw_params = snd_nm256_pcm_hw_params, 900 .prepare = snd_nm256_pcm_prepare, 901 .trigger = snd_nm256_playback_trigger, 902 .pointer = snd_nm256_playback_pointer, 903 #ifndef __i386__ 904 .copy = snd_nm256_playback_copy, 905 .silence = snd_nm256_playback_silence, 906 #endif 907 .mmap = snd_pcm_lib_mmap_iomem, 908 }; 909 910 static struct snd_pcm_ops snd_nm256_capture_ops = { 911 .open = snd_nm256_capture_open, 912 .close = snd_nm256_capture_close, 913 .ioctl = snd_pcm_lib_ioctl, 914 .hw_params = snd_nm256_pcm_hw_params, 915 .prepare = snd_nm256_pcm_prepare, 916 .trigger = snd_nm256_capture_trigger, 917 .pointer = snd_nm256_capture_pointer, 918 #ifndef __i386__ 919 .copy = snd_nm256_capture_copy, 920 #endif 921 .mmap = snd_pcm_lib_mmap_iomem, 922 }; 923 924 static int __devinit 925 snd_nm256_pcm(struct nm256 *chip, int device) 926 { 927 struct snd_pcm *pcm; 928 int i, err; 929 930 for (i = 0; i < 2; i++) { 931 struct nm256_stream *s = &chip->streams[i]; 932 s->bufptr = chip->buffer + (s->buf - chip->buffer_start); 933 s->bufptr_addr = chip->buffer_addr + (s->buf - chip->buffer_start); 934 } 935 936 err = snd_pcm_new(chip->card, chip->card->driver, device, 937 1, 1, &pcm); 938 if (err < 0) 939 return err; 940 941 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_nm256_playback_ops); 942 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_nm256_capture_ops); 943 944 pcm->private_data = chip; 945 pcm->info_flags = 0; 946 chip->pcm = pcm; 947 948 return 0; 949 } 950 951 952 /* 953 * Initialize the hardware. 954 */ 955 static void 956 snd_nm256_init_chip(struct nm256 *chip) 957 { 958 /* Reset everything. */ 959 snd_nm256_writeb(chip, 0x0, 0x11); 960 snd_nm256_writew(chip, 0x214, 0); 961 /* stop sounds.. */ 962 //snd_nm256_playback_stop(chip); 963 //snd_nm256_capture_stop(chip); 964 } 965 966 967 static irqreturn_t 968 snd_nm256_intr_check(struct nm256 *chip) 969 { 970 if (chip->badintrcount++ > 1000) { 971 /* 972 * I'm not sure if the best thing is to stop the card from 973 * playing or just release the interrupt (after all, we're in 974 * a bad situation, so doing fancy stuff may not be such a good 975 * idea). 976 * 977 * I worry about the card engine continuing to play noise 978 * over and over, however--that could become a very 979 * obnoxious problem. And we know that when this usually 980 * happens things are fairly safe, it just means the user's 981 * inserted a PCMCIA card and someone's spamming us with IRQ 9s. 982 */ 983 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running) 984 snd_nm256_playback_stop(chip); 985 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running) 986 snd_nm256_capture_stop(chip); 987 chip->badintrcount = 0; 988 return IRQ_HANDLED; 989 } 990 return IRQ_NONE; 991 } 992 993 /* 994 * Handle a potential interrupt for the device referred to by DEV_ID. 995 * 996 * I don't like the cut-n-paste job here either between the two routines, 997 * but there are sufficient differences between the two interrupt handlers 998 * that parameterizing it isn't all that great either. (Could use a macro, 999 * I suppose...yucky bleah.) 1000 */ 1001 1002 static irqreturn_t 1003 snd_nm256_interrupt(int irq, void *dev_id, struct pt_regs *dummy) 1004 { 1005 struct nm256 *chip = dev_id; 1006 u16 status; 1007 u8 cbyte; 1008 1009 status = snd_nm256_readw(chip, NM_INT_REG); 1010 1011 /* Not ours. */ 1012 if (status == 0) 1013 return snd_nm256_intr_check(chip); 1014 1015 chip->badintrcount = 0; 1016 1017 /* Rather boring; check for individual interrupts and process them. */ 1018 1019 spin_lock(&chip->reg_lock); 1020 if (status & NM_PLAYBACK_INT) { 1021 status &= ~NM_PLAYBACK_INT; 1022 NM_ACK_INT(chip, NM_PLAYBACK_INT); 1023 snd_nm256_playback_update(chip); 1024 } 1025 1026 if (status & NM_RECORD_INT) { 1027 status &= ~NM_RECORD_INT; 1028 NM_ACK_INT(chip, NM_RECORD_INT); 1029 snd_nm256_capture_update(chip); 1030 } 1031 1032 if (status & NM_MISC_INT_1) { 1033 status &= ~NM_MISC_INT_1; 1034 NM_ACK_INT(chip, NM_MISC_INT_1); 1035 snd_printd("NM256: Got misc interrupt #1\n"); 1036 snd_nm256_writew(chip, NM_INT_REG, 0x8000); 1037 cbyte = snd_nm256_readb(chip, 0x400); 1038 snd_nm256_writeb(chip, 0x400, cbyte | 2); 1039 } 1040 1041 if (status & NM_MISC_INT_2) { 1042 status &= ~NM_MISC_INT_2; 1043 NM_ACK_INT(chip, NM_MISC_INT_2); 1044 snd_printd("NM256: Got misc interrupt #2\n"); 1045 cbyte = snd_nm256_readb(chip, 0x400); 1046 snd_nm256_writeb(chip, 0x400, cbyte & ~2); 1047 } 1048 1049 /* Unknown interrupt. */ 1050 if (status) { 1051 snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n", 1052 status); 1053 /* Pray. */ 1054 NM_ACK_INT(chip, status); 1055 } 1056 1057 spin_unlock(&chip->reg_lock); 1058 return IRQ_HANDLED; 1059 } 1060 1061 /* 1062 * Handle a potential interrupt for the device referred to by DEV_ID. 1063 * This handler is for the 256ZX, and is very similar to the non-ZX 1064 * routine. 1065 */ 1066 1067 static irqreturn_t 1068 snd_nm256_interrupt_zx(int irq, void *dev_id, struct pt_regs *dummy) 1069 { 1070 struct nm256 *chip = dev_id; 1071 u32 status; 1072 u8 cbyte; 1073 1074 status = snd_nm256_readl(chip, NM_INT_REG); 1075 1076 /* Not ours. */ 1077 if (status == 0) 1078 return snd_nm256_intr_check(chip); 1079 1080 chip->badintrcount = 0; 1081 1082 /* Rather boring; check for individual interrupts and process them. */ 1083 1084 spin_lock(&chip->reg_lock); 1085 if (status & NM2_PLAYBACK_INT) { 1086 status &= ~NM2_PLAYBACK_INT; 1087 NM2_ACK_INT(chip, NM2_PLAYBACK_INT); 1088 snd_nm256_playback_update(chip); 1089 } 1090 1091 if (status & NM2_RECORD_INT) { 1092 status &= ~NM2_RECORD_INT; 1093 NM2_ACK_INT(chip, NM2_RECORD_INT); 1094 snd_nm256_capture_update(chip); 1095 } 1096 1097 if (status & NM2_MISC_INT_1) { 1098 status &= ~NM2_MISC_INT_1; 1099 NM2_ACK_INT(chip, NM2_MISC_INT_1); 1100 snd_printd("NM256: Got misc interrupt #1\n"); 1101 cbyte = snd_nm256_readb(chip, 0x400); 1102 snd_nm256_writeb(chip, 0x400, cbyte | 2); 1103 } 1104 1105 if (status & NM2_MISC_INT_2) { 1106 status &= ~NM2_MISC_INT_2; 1107 NM2_ACK_INT(chip, NM2_MISC_INT_2); 1108 snd_printd("NM256: Got misc interrupt #2\n"); 1109 cbyte = snd_nm256_readb(chip, 0x400); 1110 snd_nm256_writeb(chip, 0x400, cbyte & ~2); 1111 } 1112 1113 /* Unknown interrupt. */ 1114 if (status) { 1115 snd_printd("NM256: Fire in the hole! Unknown status 0x%x\n", 1116 status); 1117 /* Pray. */ 1118 NM2_ACK_INT(chip, status); 1119 } 1120 1121 spin_unlock(&chip->reg_lock); 1122 return IRQ_HANDLED; 1123 } 1124 1125 /* 1126 * AC97 interface 1127 */ 1128 1129 /* 1130 * Waits for the mixer to become ready to be written; returns a zero value 1131 * if it timed out. 1132 */ 1133 static int 1134 snd_nm256_ac97_ready(struct nm256 *chip) 1135 { 1136 int timeout = 10; 1137 u32 testaddr; 1138 u16 testb; 1139 1140 testaddr = chip->mixer_status_offset; 1141 testb = chip->mixer_status_mask; 1142 1143 /* 1144 * Loop around waiting for the mixer to become ready. 1145 */ 1146 while (timeout-- > 0) { 1147 if ((snd_nm256_readw(chip, testaddr) & testb) == 0) 1148 return 1; 1149 udelay(100); 1150 } 1151 return 0; 1152 } 1153 1154 /* 1155 */ 1156 static unsigned short 1157 snd_nm256_ac97_read(struct snd_ac97 *ac97, unsigned short reg) 1158 { 1159 struct nm256 *chip = ac97->private_data; 1160 int res; 1161 1162 if (reg >= 128) 1163 return 0; 1164 1165 if (! snd_nm256_ac97_ready(chip)) 1166 return 0; 1167 res = snd_nm256_readw(chip, chip->mixer_base + reg); 1168 /* Magic delay. Bleah yucky. */ 1169 msleep(1); 1170 return res; 1171 } 1172 1173 /* 1174 */ 1175 static void 1176 snd_nm256_ac97_write(struct snd_ac97 *ac97, 1177 unsigned short reg, unsigned short val) 1178 { 1179 struct nm256 *chip = ac97->private_data; 1180 int tries = 2; 1181 u32 base; 1182 1183 base = chip->mixer_base; 1184 1185 snd_nm256_ac97_ready(chip); 1186 1187 /* Wait for the write to take, too. */ 1188 while (tries-- > 0) { 1189 snd_nm256_writew(chip, base + reg, val); 1190 msleep(1); /* a little delay here seems better.. */ 1191 if (snd_nm256_ac97_ready(chip)) 1192 return; 1193 } 1194 snd_printd("nm256: ac97 codec not ready..\n"); 1195 } 1196 1197 /* initialize the ac97 into a known state */ 1198 static void 1199 snd_nm256_ac97_reset(struct snd_ac97 *ac97) 1200 { 1201 struct nm256 *chip = ac97->private_data; 1202 1203 /* Reset the mixer. 'Tis magic! */ 1204 snd_nm256_writeb(chip, 0x6c0, 1); 1205 if (! chip->reset_workaround) { 1206 /* Dell latitude LS will lock up by this */ 1207 snd_nm256_writeb(chip, 0x6cc, 0x87); 1208 } 1209 if (! chip->reset_workaround_2) { 1210 /* Dell latitude CSx will lock up by this */ 1211 snd_nm256_writeb(chip, 0x6cc, 0x80); 1212 snd_nm256_writeb(chip, 0x6cc, 0x0); 1213 } 1214 } 1215 1216 /* create an ac97 mixer interface */ 1217 static int __devinit 1218 snd_nm256_mixer(struct nm256 *chip) 1219 { 1220 struct snd_ac97_bus *pbus; 1221 struct snd_ac97_template ac97; 1222 int i, err; 1223 static struct snd_ac97_bus_ops ops = { 1224 .reset = snd_nm256_ac97_reset, 1225 .write = snd_nm256_ac97_write, 1226 .read = snd_nm256_ac97_read, 1227 }; 1228 /* looks like nm256 hangs up when unexpected registers are touched... */ 1229 static int mixer_regs[] = { 1230 AC97_MASTER, AC97_HEADPHONE, AC97_MASTER_MONO, 1231 AC97_PC_BEEP, AC97_PHONE, AC97_MIC, AC97_LINE, AC97_CD, 1232 AC97_VIDEO, AC97_AUX, AC97_PCM, AC97_REC_SEL, 1233 AC97_REC_GAIN, AC97_GENERAL_PURPOSE, AC97_3D_CONTROL, 1234 /*AC97_EXTENDED_ID,*/ 1235 AC97_VENDOR_ID1, AC97_VENDOR_ID2, 1236 -1 1237 }; 1238 1239 if ((err = snd_ac97_bus(chip->card, 0, &ops, NULL, &pbus)) < 0) 1240 return err; 1241 1242 memset(&ac97, 0, sizeof(ac97)); 1243 ac97.scaps = AC97_SCAP_AUDIO; /* we support audio! */ 1244 ac97.limited_regs = 1; 1245 for (i = 0; mixer_regs[i] >= 0; i++) 1246 set_bit(mixer_regs[i], ac97.reg_accessed); 1247 ac97.private_data = chip; 1248 pbus->no_vra = 1; 1249 err = snd_ac97_mixer(pbus, &ac97, &chip->ac97); 1250 if (err < 0) 1251 return err; 1252 if (! (chip->ac97->id & (0xf0000000))) { 1253 /* looks like an invalid id */ 1254 sprintf(chip->card->mixername, "%s AC97", chip->card->driver); 1255 } 1256 return 0; 1257 } 1258 1259 /* 1260 * See if the signature left by the NM256 BIOS is intact; if so, we use 1261 * the associated address as the end of our audio buffer in the video 1262 * RAM. 1263 */ 1264 1265 static int __devinit 1266 snd_nm256_peek_for_sig(struct nm256 *chip) 1267 { 1268 /* The signature is located 1K below the end of video RAM. */ 1269 void __iomem *temp; 1270 /* Default buffer end is 5120 bytes below the top of RAM. */ 1271 unsigned long pointer_found = chip->buffer_end - 0x1400; 1272 u32 sig; 1273 1274 temp = ioremap_nocache(chip->buffer_addr + chip->buffer_end - 0x400, 16); 1275 if (temp == NULL) { 1276 snd_printk(KERN_ERR "Unable to scan for card signature in video RAM\n"); 1277 return -EBUSY; 1278 } 1279 1280 sig = readl(temp); 1281 if ((sig & NM_SIG_MASK) == NM_SIGNATURE) { 1282 u32 pointer = readl(temp + 4); 1283 1284 /* 1285 * If it's obviously invalid, don't use it 1286 */ 1287 if (pointer == 0xffffffff || 1288 pointer < chip->buffer_size || 1289 pointer > chip->buffer_end) { 1290 snd_printk(KERN_ERR "invalid signature found: 0x%x\n", pointer); 1291 iounmap(temp); 1292 return -ENODEV; 1293 } else { 1294 pointer_found = pointer; 1295 printk(KERN_INFO "nm256: found card signature in video RAM: 0x%x\n", 1296 pointer); 1297 } 1298 } 1299 1300 iounmap(temp); 1301 chip->buffer_end = pointer_found; 1302 1303 return 0; 1304 } 1305 1306 #ifdef CONFIG_PM 1307 /* 1308 * APM event handler, so the card is properly reinitialized after a power 1309 * event. 1310 */ 1311 static int nm256_suspend(struct pci_dev *pci, pm_message_t state) 1312 { 1313 struct snd_card *card = pci_get_drvdata(pci); 1314 struct nm256 *chip = card->private_data; 1315 1316 snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); 1317 snd_pcm_suspend_all(chip->pcm); 1318 snd_ac97_suspend(chip->ac97); 1319 chip->coeffs_current = 0; 1320 pci_disable_device(pci); 1321 pci_save_state(pci); 1322 return 0; 1323 } 1324 1325 static int nm256_resume(struct pci_dev *pci) 1326 { 1327 struct snd_card *card = pci_get_drvdata(pci); 1328 struct nm256 *chip = card->private_data; 1329 int i; 1330 1331 /* Perform a full reset on the hardware */ 1332 pci_restore_state(pci); 1333 pci_enable_device(pci); 1334 snd_nm256_init_chip(chip); 1335 1336 /* restore ac97 */ 1337 snd_ac97_resume(chip->ac97); 1338 1339 for (i = 0; i < 2; i++) { 1340 struct nm256_stream *s = &chip->streams[i]; 1341 if (s->substream && s->suspended) { 1342 spin_lock_irq(&chip->reg_lock); 1343 snd_nm256_set_format(chip, s, s->substream); 1344 spin_unlock_irq(&chip->reg_lock); 1345 } 1346 } 1347 1348 snd_power_change_state(card, SNDRV_CTL_POWER_D0); 1349 return 0; 1350 } 1351 #endif /* CONFIG_PM */ 1352 1353 static int snd_nm256_free(struct nm256 *chip) 1354 { 1355 if (chip->streams[SNDRV_PCM_STREAM_PLAYBACK].running) 1356 snd_nm256_playback_stop(chip); 1357 if (chip->streams[SNDRV_PCM_STREAM_CAPTURE].running) 1358 snd_nm256_capture_stop(chip); 1359 1360 if (chip->irq >= 0) 1361 synchronize_irq(chip->irq); 1362 1363 if (chip->cport) 1364 iounmap(chip->cport); 1365 if (chip->buffer) 1366 iounmap(chip->buffer); 1367 release_and_free_resource(chip->res_cport); 1368 release_and_free_resource(chip->res_buffer); 1369 if (chip->irq >= 0) 1370 free_irq(chip->irq, chip); 1371 1372 pci_disable_device(chip->pci); 1373 kfree(chip); 1374 return 0; 1375 } 1376 1377 static int snd_nm256_dev_free(struct snd_device *device) 1378 { 1379 struct nm256 *chip = device->device_data; 1380 return snd_nm256_free(chip); 1381 } 1382 1383 static int __devinit 1384 snd_nm256_create(struct snd_card *card, struct pci_dev *pci, 1385 struct nm256 **chip_ret) 1386 { 1387 struct nm256 *chip; 1388 int err, pval; 1389 static struct snd_device_ops ops = { 1390 .dev_free = snd_nm256_dev_free, 1391 }; 1392 u32 addr; 1393 1394 *chip_ret = NULL; 1395 1396 if ((err = pci_enable_device(pci)) < 0) 1397 return err; 1398 1399 chip = kzalloc(sizeof(*chip), GFP_KERNEL); 1400 if (chip == NULL) { 1401 pci_disable_device(pci); 1402 return -ENOMEM; 1403 } 1404 1405 chip->card = card; 1406 chip->pci = pci; 1407 chip->use_cache = use_cache; 1408 spin_lock_init(&chip->reg_lock); 1409 chip->irq = -1; 1410 init_MUTEX(&chip->irq_mutex); 1411 1412 /* store buffer sizes in bytes */ 1413 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize = playback_bufsize * 1024; 1414 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize = capture_bufsize * 1024; 1415 1416 /* 1417 * The NM256 has two memory ports. The first port is nothing 1418 * more than a chunk of video RAM, which is used as the I/O ring 1419 * buffer. The second port has the actual juicy stuff (like the 1420 * mixer and the playback engine control registers). 1421 */ 1422 1423 chip->buffer_addr = pci_resource_start(pci, 0); 1424 chip->cport_addr = pci_resource_start(pci, 1); 1425 1426 /* Init the memory port info. */ 1427 /* remap control port (#2) */ 1428 chip->res_cport = request_mem_region(chip->cport_addr, NM_PORT2_SIZE, 1429 card->driver); 1430 if (chip->res_cport == NULL) { 1431 snd_printk(KERN_ERR "memory region 0x%lx (size 0x%x) busy\n", 1432 chip->cport_addr, NM_PORT2_SIZE); 1433 err = -EBUSY; 1434 goto __error; 1435 } 1436 chip->cport = ioremap_nocache(chip->cport_addr, NM_PORT2_SIZE); 1437 if (chip->cport == NULL) { 1438 snd_printk(KERN_ERR "unable to map control port %lx\n", chip->cport_addr); 1439 err = -ENOMEM; 1440 goto __error; 1441 } 1442 1443 if (!strcmp(card->driver, "NM256AV")) { 1444 /* Ok, try to see if this is a non-AC97 version of the hardware. */ 1445 pval = snd_nm256_readw(chip, NM_MIXER_PRESENCE); 1446 if ((pval & NM_PRESENCE_MASK) != NM_PRESENCE_VALUE) { 1447 if (! force_ac97) { 1448 printk(KERN_ERR "nm256: no ac97 is found!\n"); 1449 printk(KERN_ERR " force the driver to load by " 1450 "passing in the module parameter\n"); 1451 printk(KERN_ERR " force_ac97=1\n"); 1452 printk(KERN_ERR " or try sb16 or cs423x drivers instead.\n"); 1453 err = -ENXIO; 1454 goto __error; 1455 } 1456 } 1457 chip->buffer_end = 2560 * 1024; 1458 chip->interrupt = snd_nm256_interrupt; 1459 chip->mixer_status_offset = NM_MIXER_STATUS_OFFSET; 1460 chip->mixer_status_mask = NM_MIXER_READY_MASK; 1461 } else { 1462 /* Not sure if there is any relevant detect for the ZX or not. */ 1463 if (snd_nm256_readb(chip, 0xa0b) != 0) 1464 chip->buffer_end = 6144 * 1024; 1465 else 1466 chip->buffer_end = 4096 * 1024; 1467 1468 chip->interrupt = snd_nm256_interrupt_zx; 1469 chip->mixer_status_offset = NM2_MIXER_STATUS_OFFSET; 1470 chip->mixer_status_mask = NM2_MIXER_READY_MASK; 1471 } 1472 1473 chip->buffer_size = chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize + 1474 chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize; 1475 if (chip->use_cache) 1476 chip->buffer_size += NM_TOTAL_COEFF_COUNT * 4; 1477 else 1478 chip->buffer_size += NM_MAX_PLAYBACK_COEF_SIZE + NM_MAX_RECORD_COEF_SIZE; 1479 1480 if (buffer_top >= chip->buffer_size && buffer_top < chip->buffer_end) 1481 chip->buffer_end = buffer_top; 1482 else { 1483 /* get buffer end pointer from signature */ 1484 if ((err = snd_nm256_peek_for_sig(chip)) < 0) 1485 goto __error; 1486 } 1487 1488 chip->buffer_start = chip->buffer_end - chip->buffer_size; 1489 chip->buffer_addr += chip->buffer_start; 1490 1491 printk(KERN_INFO "nm256: Mapping port 1 from 0x%x - 0x%x\n", 1492 chip->buffer_start, chip->buffer_end); 1493 1494 chip->res_buffer = request_mem_region(chip->buffer_addr, 1495 chip->buffer_size, 1496 card->driver); 1497 if (chip->res_buffer == NULL) { 1498 snd_printk(KERN_ERR "nm256: buffer 0x%lx (size 0x%x) busy\n", 1499 chip->buffer_addr, chip->buffer_size); 1500 err = -EBUSY; 1501 goto __error; 1502 } 1503 chip->buffer = ioremap_nocache(chip->buffer_addr, chip->buffer_size); 1504 if (chip->buffer == NULL) { 1505 err = -ENOMEM; 1506 snd_printk(KERN_ERR "unable to map ring buffer at %lx\n", chip->buffer_addr); 1507 goto __error; 1508 } 1509 1510 /* set offsets */ 1511 addr = chip->buffer_start; 1512 chip->streams[SNDRV_PCM_STREAM_PLAYBACK].buf = addr; 1513 addr += chip->streams[SNDRV_PCM_STREAM_PLAYBACK].bufsize; 1514 chip->streams[SNDRV_PCM_STREAM_CAPTURE].buf = addr; 1515 addr += chip->streams[SNDRV_PCM_STREAM_CAPTURE].bufsize; 1516 if (chip->use_cache) { 1517 chip->all_coeff_buf = addr; 1518 } else { 1519 chip->coeff_buf[SNDRV_PCM_STREAM_PLAYBACK] = addr; 1520 addr += NM_MAX_PLAYBACK_COEF_SIZE; 1521 chip->coeff_buf[SNDRV_PCM_STREAM_CAPTURE] = addr; 1522 } 1523 1524 /* Fixed setting. */ 1525 chip->mixer_base = NM_MIXER_OFFSET; 1526 1527 chip->coeffs_current = 0; 1528 1529 snd_nm256_init_chip(chip); 1530 1531 // pci_set_master(pci); /* needed? */ 1532 1533 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) 1534 goto __error; 1535 1536 snd_card_set_dev(card, &pci->dev); 1537 1538 *chip_ret = chip; 1539 return 0; 1540 1541 __error: 1542 snd_nm256_free(chip); 1543 return err; 1544 } 1545 1546 1547 struct nm256_quirk { 1548 unsigned short vendor; 1549 unsigned short device; 1550 int type; 1551 }; 1552 1553 enum { NM_BLACKLISTED, NM_RESET_WORKAROUND, NM_RESET_WORKAROUND_2 }; 1554 1555 static struct nm256_quirk nm256_quirks[] __devinitdata = { 1556 /* HP omnibook 4150 has cs4232 codec internally */ 1557 { .vendor = 0x103c, .device = 0x0007, .type = NM_BLACKLISTED }, 1558 /* Sony PCG-F305 */ 1559 { .vendor = 0x104d, .device = 0x8041, .type = NM_RESET_WORKAROUND }, 1560 /* Dell Latitude LS */ 1561 { .vendor = 0x1028, .device = 0x0080, .type = NM_RESET_WORKAROUND }, 1562 /* Dell Latitude CSx */ 1563 { .vendor = 0x1028, .device = 0x0091, .type = NM_RESET_WORKAROUND_2 }, 1564 { } /* terminator */ 1565 }; 1566 1567 1568 static int __devinit snd_nm256_probe(struct pci_dev *pci, 1569 const struct pci_device_id *pci_id) 1570 { 1571 struct snd_card *card; 1572 struct nm256 *chip; 1573 int err; 1574 struct nm256_quirk *q; 1575 u16 subsystem_vendor, subsystem_device; 1576 1577 pci_read_config_word(pci, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vendor); 1578 pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &subsystem_device); 1579 1580 for (q = nm256_quirks; q->vendor; q++) { 1581 if (q->vendor == subsystem_vendor && q->device == subsystem_device) { 1582 switch (q->type) { 1583 case NM_BLACKLISTED: 1584 printk(KERN_INFO "nm256: The device is blacklisted. " 1585 "Loading stopped\n"); 1586 return -ENODEV; 1587 case NM_RESET_WORKAROUND_2: 1588 reset_workaround_2 = 1; 1589 /* Fall-through */ 1590 case NM_RESET_WORKAROUND: 1591 reset_workaround = 1; 1592 break; 1593 } 1594 } 1595 } 1596 1597 card = snd_card_new(index, id, THIS_MODULE, 0); 1598 if (card == NULL) 1599 return -ENOMEM; 1600 1601 switch (pci->device) { 1602 case PCI_DEVICE_ID_NEOMAGIC_NM256AV_AUDIO: 1603 strcpy(card->driver, "NM256AV"); 1604 break; 1605 case PCI_DEVICE_ID_NEOMAGIC_NM256ZX_AUDIO: 1606 strcpy(card->driver, "NM256ZX"); 1607 break; 1608 case PCI_DEVICE_ID_NEOMAGIC_NM256XL_PLUS_AUDIO: 1609 strcpy(card->driver, "NM256XL+"); 1610 break; 1611 default: 1612 snd_printk(KERN_ERR "invalid device id 0x%x\n", pci->device); 1613 snd_card_free(card); 1614 return -EINVAL; 1615 } 1616 1617 if (vaio_hack) 1618 buffer_top = 0x25a800; /* this avoids conflicts with XFree86 server */ 1619 1620 if (playback_bufsize < 4) 1621 playback_bufsize = 4; 1622 if (playback_bufsize > 128) 1623 playback_bufsize = 128; 1624 if (capture_bufsize < 4) 1625 capture_bufsize = 4; 1626 if (capture_bufsize > 128) 1627 capture_bufsize = 128; 1628 if ((err = snd_nm256_create(card, pci, &chip)) < 0) { 1629 snd_card_free(card); 1630 return err; 1631 } 1632 card->private_data = chip; 1633 1634 if (reset_workaround) { 1635 snd_printdd(KERN_INFO "nm256: reset_workaround activated\n"); 1636 chip->reset_workaround = 1; 1637 } 1638 1639 if (reset_workaround_2) { 1640 snd_printdd(KERN_INFO "nm256: reset_workaround_2 activated\n"); 1641 chip->reset_workaround_2 = 1; 1642 } 1643 1644 if ((err = snd_nm256_pcm(chip, 0)) < 0 || 1645 (err = snd_nm256_mixer(chip)) < 0) { 1646 snd_card_free(card); 1647 return err; 1648 } 1649 1650 sprintf(card->shortname, "NeoMagic %s", card->driver); 1651 sprintf(card->longname, "%s at 0x%lx & 0x%lx, irq %d", 1652 card->shortname, 1653 chip->buffer_addr, chip->cport_addr, chip->irq); 1654 1655 if ((err = snd_card_register(card)) < 0) { 1656 snd_card_free(card); 1657 return err; 1658 } 1659 1660 pci_set_drvdata(pci, card); 1661 return 0; 1662 } 1663 1664 static void __devexit snd_nm256_remove(struct pci_dev *pci) 1665 { 1666 snd_card_free(pci_get_drvdata(pci)); 1667 pci_set_drvdata(pci, NULL); 1668 } 1669 1670 1671 static struct pci_driver driver = { 1672 .name = "NeoMagic 256", 1673 .id_table = snd_nm256_ids, 1674 .probe = snd_nm256_probe, 1675 .remove = __devexit_p(snd_nm256_remove), 1676 #ifdef CONFIG_PM 1677 .suspend = nm256_suspend, 1678 .resume = nm256_resume, 1679 #endif 1680 }; 1681 1682 1683 static int __init alsa_card_nm256_init(void) 1684 { 1685 return pci_register_driver(&driver); 1686 } 1687 1688 static void __exit alsa_card_nm256_exit(void) 1689 { 1690 pci_unregister_driver(&driver); 1691 } 1692 1693 module_init(alsa_card_nm256_init) 1694 module_exit(alsa_card_nm256_exit) 1695