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