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