Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * forte.c - ForteMedia FM801 OSS Driver |
| 3 | * |
| 4 | * Written by Martin K. Petersen <mkp@mkp.net> |
| 5 | * Copyright (C) 2002 Hewlett-Packard Company |
| 6 | * Portions Copyright (C) 2003 Martin K. Petersen |
| 7 | * |
| 8 | * Latest version: http://mkp.net/forte/ |
| 9 | * |
| 10 | * Based upon the ALSA FM801 driver by Jaroslav Kysela and OSS drivers |
| 11 | * by Thomas Sailer, Alan Cox, Zach Brown, and Jeff Garzik. Thanks |
| 12 | * guys! |
| 13 | * |
| 14 | * This program is free software; you can redistribute it and/or |
| 15 | * modify it under the terms of the GNU General Public License version |
| 16 | * 2 as published by the Free Software Foundation. |
| 17 | * |
| 18 | * This program is distributed in the hope that it will be useful, but |
| 19 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 21 | * General Public License for more details. |
| 22 | * |
| 23 | * You should have received a copy of the GNU General Public License |
| 24 | * along with this program; if not, write to the Free Software |
| 25 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
| 26 | * USA |
| 27 | * |
| 28 | */ |
| 29 | |
| 30 | #include <linux/config.h> |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/kernel.h> |
| 33 | |
| 34 | #include <linux/init.h> |
| 35 | #include <linux/spinlock.h> |
| 36 | #include <linux/pci.h> |
| 37 | |
| 38 | #include <linux/delay.h> |
| 39 | #include <linux/poll.h> |
| 40 | |
| 41 | #include <linux/sound.h> |
| 42 | #include <linux/ac97_codec.h> |
| 43 | #include <linux/interrupt.h> |
| 44 | |
| 45 | #include <linux/proc_fs.h> |
| 46 | |
| 47 | #include <asm/uaccess.h> |
| 48 | #include <asm/io.h> |
| 49 | |
| 50 | #define DRIVER_NAME "forte" |
| 51 | #define DRIVER_VERSION "$Id: forte.c,v 1.63 2003/03/01 05:32:42 mkp Exp $" |
| 52 | #define PFX DRIVER_NAME ": " |
| 53 | |
| 54 | #undef M_DEBUG |
| 55 | |
| 56 | #ifdef M_DEBUG |
| 57 | #define DPRINTK(args...) printk(KERN_WARNING args) |
| 58 | #else |
| 59 | #define DPRINTK(args...) |
| 60 | #endif |
| 61 | |
| 62 | /* Card capabilities */ |
| 63 | #define FORTE_CAPS (DSP_CAP_MMAP | DSP_CAP_TRIGGER) |
| 64 | |
| 65 | /* Supported audio formats */ |
| 66 | #define FORTE_FMTS (AFMT_U8 | AFMT_S16_LE) |
| 67 | |
| 68 | /* Buffers */ |
| 69 | #define FORTE_MIN_FRAG_SIZE 256 |
| 70 | #define FORTE_MAX_FRAG_SIZE PAGE_SIZE |
| 71 | #define FORTE_DEF_FRAG_SIZE 256 |
| 72 | #define FORTE_MIN_FRAGMENTS 2 |
| 73 | #define FORTE_MAX_FRAGMENTS 256 |
| 74 | #define FORTE_DEF_FRAGMENTS 2 |
| 75 | #define FORTE_MIN_BUF_MSECS 500 |
| 76 | #define FORTE_MAX_BUF_MSECS 1000 |
| 77 | |
| 78 | /* PCI BARs */ |
| 79 | #define FORTE_PCM_VOL 0x00 /* PCM Output Volume */ |
| 80 | #define FORTE_FM_VOL 0x02 /* FM Output Volume */ |
| 81 | #define FORTE_I2S_VOL 0x04 /* I2S Volume */ |
| 82 | #define FORTE_REC_SRC 0x06 /* Record Source */ |
| 83 | #define FORTE_PLY_CTRL 0x08 /* Playback Control */ |
| 84 | #define FORTE_PLY_COUNT 0x0a /* Playback Count */ |
| 85 | #define FORTE_PLY_BUF1 0x0c /* Playback Buffer I */ |
| 86 | #define FORTE_PLY_BUF2 0x10 /* Playback Buffer II */ |
| 87 | #define FORTE_CAP_CTRL 0x14 /* Capture Control */ |
| 88 | #define FORTE_CAP_COUNT 0x16 /* Capture Count */ |
| 89 | #define FORTE_CAP_BUF1 0x18 /* Capture Buffer I */ |
| 90 | #define FORTE_CAP_BUF2 0x1c /* Capture Buffer II */ |
| 91 | #define FORTE_CODEC_CTRL 0x22 /* Codec Control */ |
| 92 | #define FORTE_I2S_MODE 0x24 /* I2S Mode Control */ |
| 93 | #define FORTE_VOLUME 0x26 /* Volume Up/Down/Mute Status */ |
| 94 | #define FORTE_I2C_CTRL 0x29 /* I2C Control */ |
| 95 | #define FORTE_AC97_CMD 0x2a /* AC'97 Command */ |
| 96 | #define FORTE_AC97_DATA 0x2c /* AC'97 Data */ |
| 97 | #define FORTE_MPU401_DATA 0x30 /* MPU401 Data */ |
| 98 | #define FORTE_MPU401_CMD 0x31 /* MPU401 Command */ |
| 99 | #define FORTE_GPIO_CTRL 0x52 /* General Purpose I/O Control */ |
| 100 | #define FORTE_GEN_CTRL 0x54 /* General Control */ |
| 101 | #define FORTE_IRQ_MASK 0x56 /* Interrupt Mask */ |
| 102 | #define FORTE_IRQ_STATUS 0x5a /* Interrupt Status */ |
| 103 | #define FORTE_OPL3_BANK0 0x68 /* OPL3 Status Read / Bank 0 Write */ |
| 104 | #define FORTE_OPL3_DATA0 0x69 /* OPL3 Data 0 Write */ |
| 105 | #define FORTE_OPL3_BANK1 0x6a /* OPL3 Bank 1 Write */ |
| 106 | #define FORTE_OPL3_DATA1 0x6b /* OPL3 Bank 1 Write */ |
| 107 | #define FORTE_POWERDOWN 0x70 /* Blocks Power Down Control */ |
| 108 | |
| 109 | #define FORTE_CAP_OFFSET FORTE_CAP_CTRL - FORTE_PLY_CTRL |
| 110 | |
| 111 | #define FORTE_AC97_ADDR_SHIFT 10 |
| 112 | |
| 113 | /* Playback and record control register bits */ |
| 114 | #define FORTE_BUF1_LAST (1<<1) |
| 115 | #define FORTE_BUF2_LAST (1<<2) |
| 116 | #define FORTE_START (1<<5) |
| 117 | #define FORTE_PAUSE (1<<6) |
| 118 | #define FORTE_IMMED_STOP (1<<7) |
| 119 | #define FORTE_RATE_SHIFT 8 |
| 120 | #define FORTE_RATE_MASK (15 << FORTE_RATE_SHIFT) |
| 121 | #define FORTE_CHANNELS_4 (1<<12) /* Playback only */ |
| 122 | #define FORTE_CHANNELS_6 (2<<12) /* Playback only */ |
| 123 | #define FORTE_CHANNELS_6MS (3<<12) /* Playback only */ |
| 124 | #define FORTE_CHANNELS_MASK (3<<12) |
| 125 | #define FORTE_16BIT (1<<14) |
| 126 | #define FORTE_STEREO (1<<15) |
| 127 | |
| 128 | /* IRQ status bits */ |
| 129 | #define FORTE_IRQ_PLAYBACK (1<<8) |
| 130 | #define FORTE_IRQ_CAPTURE (1<<9) |
| 131 | #define FORTE_IRQ_VOLUME (1<<14) |
| 132 | #define FORTE_IRQ_MPU (1<<15) |
| 133 | |
| 134 | /* CODEC control */ |
| 135 | #define FORTE_CC_CODEC_RESET (1<<5) |
| 136 | #define FORTE_CC_AC97_RESET (1<<6) |
| 137 | |
| 138 | /* AC97 cmd */ |
| 139 | #define FORTE_AC97_WRITE (0<<7) |
| 140 | #define FORTE_AC97_READ (1<<7) |
| 141 | #define FORTE_AC97_DP_INVALID (0<<8) |
| 142 | #define FORTE_AC97_DP_VALID (1<<8) |
| 143 | #define FORTE_AC97_PORT_RDY (0<<9) |
| 144 | #define FORTE_AC97_PORT_BSY (1<<9) |
| 145 | |
| 146 | |
| 147 | struct forte_channel { |
| 148 | const char *name; |
| 149 | |
| 150 | unsigned short ctrl; /* Ctrl BAR contents */ |
| 151 | unsigned long iobase; /* Ctrl BAR address */ |
| 152 | |
| 153 | wait_queue_head_t wait; |
| 154 | |
| 155 | void *buf; /* Buffer */ |
| 156 | dma_addr_t buf_handle; /* Buffer handle */ |
| 157 | |
| 158 | unsigned int record; |
| 159 | unsigned int format; |
| 160 | unsigned int rate; |
| 161 | unsigned int stereo; |
| 162 | |
| 163 | unsigned int frag_sz; /* Current fragment size */ |
| 164 | unsigned int frag_num; /* Current # of fragments */ |
| 165 | unsigned int frag_msecs; /* Milliseconds per frag */ |
| 166 | unsigned int buf_sz; /* Current buffer size */ |
| 167 | |
| 168 | unsigned int hwptr; /* Tail */ |
| 169 | unsigned int swptr; /* Head */ |
| 170 | unsigned int filled_frags; /* Fragments currently full */ |
| 171 | unsigned int next_buf; /* Index of next buffer */ |
| 172 | |
| 173 | unsigned int active; /* Channel currently in use */ |
| 174 | unsigned int mapped; /* mmap */ |
| 175 | |
| 176 | unsigned int buf_pages; /* Real size of buffer */ |
| 177 | unsigned int nr_irqs; /* Number of interrupts */ |
| 178 | unsigned int bytes; /* Total bytes */ |
| 179 | unsigned int residue; /* Partial fragment */ |
| 180 | }; |
| 181 | |
| 182 | |
| 183 | struct forte_chip { |
| 184 | struct pci_dev *pci_dev; |
| 185 | unsigned long iobase; |
| 186 | int irq; |
| 187 | |
| 188 | struct semaphore open_sem; /* Device access */ |
| 189 | spinlock_t lock; /* State */ |
| 190 | |
| 191 | spinlock_t ac97_lock; |
| 192 | struct ac97_codec *ac97; |
| 193 | |
| 194 | int multichannel; |
| 195 | int dsp; /* OSS handle */ |
| 196 | int trigger; /* mmap I/O trigger */ |
| 197 | |
| 198 | struct forte_channel play; |
| 199 | struct forte_channel rec; |
| 200 | }; |
| 201 | |
| 202 | |
| 203 | static int channels[] = { 2, 4, 6, }; |
| 204 | static int rates[] = { 5500, 8000, 9600, 11025, 16000, 19200, |
| 205 | 22050, 32000, 38400, 44100, 48000, }; |
| 206 | |
| 207 | static struct forte_chip *forte; |
| 208 | static int found; |
| 209 | |
| 210 | |
| 211 | /* AC97 Codec -------------------------------------------------------------- */ |
| 212 | |
| 213 | |
| 214 | /** |
| 215 | * forte_ac97_wait: |
| 216 | * @chip: fm801 instance whose AC97 codec to wait on |
| 217 | * |
| 218 | * FIXME: |
| 219 | * Stop busy-waiting |
| 220 | */ |
| 221 | |
| 222 | static inline int |
| 223 | forte_ac97_wait (struct forte_chip *chip) |
| 224 | { |
| 225 | int i = 10000; |
| 226 | |
| 227 | while ( (inw (chip->iobase + FORTE_AC97_CMD) & FORTE_AC97_PORT_BSY) |
| 228 | && i-- ) |
| 229 | cpu_relax(); |
| 230 | |
| 231 | return i == 0; |
| 232 | } |
| 233 | |
| 234 | |
| 235 | /** |
| 236 | * forte_ac97_read: |
| 237 | * @codec: AC97 codec to read from |
| 238 | * @reg: register to read |
| 239 | */ |
| 240 | |
| 241 | static u16 |
| 242 | forte_ac97_read (struct ac97_codec *codec, u8 reg) |
| 243 | { |
| 244 | u16 ret = 0; |
| 245 | struct forte_chip *chip = codec->private_data; |
| 246 | |
| 247 | spin_lock (&chip->ac97_lock); |
| 248 | |
| 249 | /* Knock, knock */ |
| 250 | if (forte_ac97_wait (chip)) { |
| 251 | printk (KERN_ERR PFX "ac97_read: Serial bus busy\n"); |
| 252 | goto out; |
| 253 | } |
| 254 | |
| 255 | /* Send read command */ |
| 256 | outw (reg | (1<<7), chip->iobase + FORTE_AC97_CMD); |
| 257 | |
| 258 | if (forte_ac97_wait (chip)) { |
| 259 | printk (KERN_ERR PFX "ac97_read: Bus busy reading reg 0x%x\n", |
| 260 | reg); |
| 261 | goto out; |
| 262 | } |
| 263 | |
| 264 | /* Sanity checking */ |
| 265 | if (inw (chip->iobase + FORTE_AC97_CMD) & FORTE_AC97_DP_INVALID) { |
| 266 | printk (KERN_ERR PFX "ac97_read: Invalid data port"); |
| 267 | goto out; |
| 268 | } |
| 269 | |
| 270 | /* Fetch result */ |
| 271 | ret = inw (chip->iobase + FORTE_AC97_DATA); |
| 272 | |
| 273 | out: |
| 274 | spin_unlock (&chip->ac97_lock); |
| 275 | return ret; |
| 276 | } |
| 277 | |
| 278 | |
| 279 | /** |
| 280 | * forte_ac97_write: |
| 281 | * @codec: AC97 codec to send command to |
| 282 | * @reg: register to write |
| 283 | * @val: value to write |
| 284 | */ |
| 285 | |
| 286 | static void |
| 287 | forte_ac97_write (struct ac97_codec *codec, u8 reg, u16 val) |
| 288 | { |
| 289 | struct forte_chip *chip = codec->private_data; |
| 290 | |
| 291 | spin_lock (&chip->ac97_lock); |
| 292 | |
| 293 | /* Knock, knock */ |
| 294 | if (forte_ac97_wait (chip)) { |
| 295 | printk (KERN_ERR PFX "ac97_write: Serial bus busy\n"); |
| 296 | goto out; |
| 297 | } |
| 298 | |
| 299 | outw (val, chip->iobase + FORTE_AC97_DATA); |
| 300 | outb (reg | FORTE_AC97_WRITE, chip->iobase + FORTE_AC97_CMD); |
| 301 | |
| 302 | /* Wait for completion */ |
| 303 | if (forte_ac97_wait (chip)) { |
| 304 | printk (KERN_ERR PFX "ac97_write: Bus busy after write\n"); |
| 305 | goto out; |
| 306 | } |
| 307 | |
| 308 | out: |
| 309 | spin_unlock (&chip->ac97_lock); |
| 310 | } |
| 311 | |
| 312 | |
| 313 | /* Mixer ------------------------------------------------------------------- */ |
| 314 | |
| 315 | |
| 316 | /** |
| 317 | * forte_mixer_open: |
| 318 | * @inode: |
| 319 | * @file: |
| 320 | */ |
| 321 | |
| 322 | static int |
| 323 | forte_mixer_open (struct inode *inode, struct file *file) |
| 324 | { |
| 325 | struct forte_chip *chip = forte; |
| 326 | file->private_data = chip->ac97; |
| 327 | return 0; |
| 328 | } |
| 329 | |
| 330 | |
| 331 | /** |
| 332 | * forte_mixer_release: |
| 333 | * @inode: |
| 334 | * @file: |
| 335 | */ |
| 336 | |
| 337 | static int |
| 338 | forte_mixer_release (struct inode *inode, struct file *file) |
| 339 | { |
| 340 | /* We will welease Wodewick */ |
| 341 | return 0; |
| 342 | } |
| 343 | |
| 344 | |
| 345 | /** |
| 346 | * forte_mixer_ioctl: |
| 347 | * @inode: |
| 348 | * @file: |
| 349 | */ |
| 350 | |
| 351 | static int |
| 352 | forte_mixer_ioctl (struct inode *inode, struct file *file, |
| 353 | unsigned int cmd, unsigned long arg) |
| 354 | { |
| 355 | struct ac97_codec *codec = (struct ac97_codec *) file->private_data; |
| 356 | |
| 357 | return codec->mixer_ioctl (codec, cmd, arg); |
| 358 | } |
| 359 | |
| 360 | |
| 361 | static struct file_operations forte_mixer_fops = { |
| 362 | .owner = THIS_MODULE, |
| 363 | .llseek = no_llseek, |
| 364 | .ioctl = forte_mixer_ioctl, |
| 365 | .open = forte_mixer_open, |
| 366 | .release = forte_mixer_release, |
| 367 | }; |
| 368 | |
| 369 | |
| 370 | /* Channel ----------------------------------------------------------------- */ |
| 371 | |
| 372 | /** |
| 373 | * forte_channel_reset: |
| 374 | * @channel: Channel to reset |
| 375 | * |
| 376 | * Locking: Must be called with lock held. |
| 377 | */ |
| 378 | |
| 379 | static void |
| 380 | forte_channel_reset (struct forte_channel *channel) |
| 381 | { |
| 382 | if (!channel || !channel->iobase) |
| 383 | return; |
| 384 | |
| 385 | DPRINTK ("%s: channel = %s\n", __FUNCTION__, channel->name); |
| 386 | |
| 387 | channel->ctrl &= ~FORTE_START; |
| 388 | outw (channel->ctrl, channel->iobase + FORTE_PLY_CTRL); |
| 389 | |
| 390 | /* We always play at least two fragments, hence these defaults */ |
| 391 | channel->hwptr = channel->frag_sz; |
| 392 | channel->next_buf = 1; |
| 393 | channel->swptr = 0; |
| 394 | channel->filled_frags = 0; |
| 395 | channel->active = 0; |
| 396 | channel->bytes = 0; |
| 397 | channel->nr_irqs = 0; |
| 398 | channel->mapped = 0; |
| 399 | channel->residue = 0; |
| 400 | } |
| 401 | |
| 402 | |
| 403 | /** |
| 404 | * forte_channel_start: |
| 405 | * @channel: Channel to start (record/playback) |
| 406 | * |
| 407 | * Locking: Must be called with lock held. |
| 408 | */ |
| 409 | |
| 410 | static void inline |
| 411 | forte_channel_start (struct forte_channel *channel) |
| 412 | { |
| 413 | if (!channel || !channel->iobase || channel->active) |
| 414 | return; |
| 415 | |
| 416 | channel->ctrl &= ~(FORTE_PAUSE | FORTE_BUF1_LAST | FORTE_BUF2_LAST |
| 417 | | FORTE_IMMED_STOP); |
| 418 | channel->ctrl |= FORTE_START; |
| 419 | channel->active = 1; |
| 420 | outw (channel->ctrl, channel->iobase + FORTE_PLY_CTRL); |
| 421 | } |
| 422 | |
| 423 | |
| 424 | /** |
| 425 | * forte_channel_stop: |
| 426 | * @channel: Channel to stop |
| 427 | * |
| 428 | * Locking: Must be called with lock held. |
| 429 | */ |
| 430 | |
| 431 | static void inline |
| 432 | forte_channel_stop (struct forte_channel *channel) |
| 433 | { |
| 434 | if (!channel || !channel->iobase) |
| 435 | return; |
| 436 | |
| 437 | channel->ctrl &= ~(FORTE_START | FORTE_PAUSE); |
| 438 | channel->ctrl |= FORTE_IMMED_STOP; |
| 439 | |
| 440 | channel->active = 0; |
| 441 | outw (channel->ctrl, channel->iobase + FORTE_PLY_CTRL); |
| 442 | } |
| 443 | |
| 444 | |
| 445 | /** |
| 446 | * forte_channel_pause: |
| 447 | * @channel: Channel to pause |
| 448 | * |
| 449 | * Locking: Must be called with lock held. |
| 450 | */ |
| 451 | |
| 452 | static void inline |
| 453 | forte_channel_pause (struct forte_channel *channel) |
| 454 | { |
| 455 | if (!channel || !channel->iobase) |
| 456 | return; |
| 457 | |
| 458 | channel->ctrl |= FORTE_PAUSE; |
| 459 | |
| 460 | channel->active = 0; |
| 461 | outw (channel->ctrl, channel->iobase + FORTE_PLY_CTRL); |
| 462 | } |
| 463 | |
| 464 | |
| 465 | /** |
| 466 | * forte_channel_rate: |
| 467 | * @channel: Channel whose rate to set. Playback and record are |
| 468 | * independent. |
| 469 | * @rate: Channel rate in Hz |
| 470 | * |
| 471 | * Locking: Must be called with lock held. |
| 472 | */ |
| 473 | |
| 474 | static int |
| 475 | forte_channel_rate (struct forte_channel *channel, unsigned int rate) |
| 476 | { |
| 477 | int new_rate; |
| 478 | |
| 479 | if (!channel || !channel->iobase) |
| 480 | return -EINVAL; |
| 481 | |
| 482 | /* The FM801 only supports a handful of fixed frequencies. |
| 483 | * We find the value closest to what userland requested. |
| 484 | */ |
| 485 | if (rate <= 6250) { rate = 5500; new_rate = 0; } |
| 486 | else if (rate <= 8800) { rate = 8000; new_rate = 1; } |
| 487 | else if (rate <= 10312) { rate = 9600; new_rate = 2; } |
| 488 | else if (rate <= 13512) { rate = 11025; new_rate = 3; } |
| 489 | else if (rate <= 17600) { rate = 16000; new_rate = 4; } |
| 490 | else if (rate <= 20625) { rate = 19200; new_rate = 5; } |
| 491 | else if (rate <= 27025) { rate = 22050; new_rate = 6; } |
| 492 | else if (rate <= 35200) { rate = 32000; new_rate = 7; } |
| 493 | else if (rate <= 41250) { rate = 38400; new_rate = 8; } |
| 494 | else if (rate <= 46050) { rate = 44100; new_rate = 9; } |
| 495 | else { rate = 48000; new_rate = 10; } |
| 496 | |
| 497 | channel->ctrl &= ~FORTE_RATE_MASK; |
| 498 | channel->ctrl |= new_rate << FORTE_RATE_SHIFT; |
| 499 | channel->rate = rate; |
| 500 | |
| 501 | DPRINTK ("%s: %s rate = %d\n", __FUNCTION__, channel->name, rate); |
| 502 | |
| 503 | return rate; |
| 504 | } |
| 505 | |
| 506 | |
| 507 | /** |
| 508 | * forte_channel_format: |
| 509 | * @channel: Channel whose audio format to set |
| 510 | * @format: OSS format ID |
| 511 | * |
| 512 | * Locking: Must be called with lock held. |
| 513 | */ |
| 514 | |
| 515 | static int |
| 516 | forte_channel_format (struct forte_channel *channel, int format) |
| 517 | { |
| 518 | if (!channel || !channel->iobase) |
| 519 | return -EINVAL; |
| 520 | |
| 521 | switch (format) { |
| 522 | |
| 523 | case AFMT_QUERY: |
| 524 | break; |
| 525 | |
| 526 | case AFMT_U8: |
| 527 | channel->ctrl &= ~FORTE_16BIT; |
| 528 | channel->format = AFMT_U8; |
| 529 | break; |
| 530 | |
| 531 | case AFMT_S16_LE: |
| 532 | default: |
| 533 | channel->ctrl |= FORTE_16BIT; |
| 534 | channel->format = AFMT_S16_LE; |
| 535 | break; |
| 536 | } |
| 537 | |
| 538 | DPRINTK ("%s: %s want %d format, got %d\n", __FUNCTION__, channel->name, |
| 539 | format, channel->format); |
| 540 | |
| 541 | return channel->format; |
| 542 | } |
| 543 | |
| 544 | |
| 545 | /** |
| 546 | * forte_channel_stereo: |
| 547 | * @channel: Channel to toggle |
| 548 | * @stereo: 0 for Mono, 1 for Stereo |
| 549 | * |
| 550 | * Locking: Must be called with lock held. |
| 551 | */ |
| 552 | |
| 553 | static int |
| 554 | forte_channel_stereo (struct forte_channel *channel, unsigned int stereo) |
| 555 | { |
| 556 | int ret; |
| 557 | |
| 558 | if (!channel || !channel->iobase) |
| 559 | return -EINVAL; |
| 560 | |
| 561 | DPRINTK ("%s: %s stereo = %d\n", __FUNCTION__, channel->name, stereo); |
| 562 | |
| 563 | switch (stereo) { |
| 564 | |
| 565 | case 0: |
| 566 | channel->ctrl &= ~(FORTE_STEREO | FORTE_CHANNELS_MASK); |
| 567 | channel-> stereo = stereo; |
| 568 | ret = stereo; |
| 569 | break; |
| 570 | |
| 571 | case 1: |
| 572 | channel->ctrl &= ~FORTE_CHANNELS_MASK; |
| 573 | channel->ctrl |= FORTE_STEREO; |
| 574 | channel-> stereo = stereo; |
| 575 | ret = stereo; |
| 576 | break; |
| 577 | |
| 578 | default: |
| 579 | DPRINTK ("Unsupported channel format"); |
| 580 | ret = -EINVAL; |
| 581 | break; |
| 582 | } |
| 583 | |
| 584 | return ret; |
| 585 | } |
| 586 | |
| 587 | |
| 588 | /** |
| 589 | * forte_channel_buffer: |
| 590 | * @channel: Channel whose buffer to set up |
| 591 | * |
| 592 | * Locking: Must be called with lock held. |
| 593 | */ |
| 594 | |
| 595 | static void |
| 596 | forte_channel_buffer (struct forte_channel *channel, int sz, int num) |
| 597 | { |
| 598 | unsigned int msecs, shift; |
| 599 | |
| 600 | /* Go away, I'm busy */ |
| 601 | if (channel->filled_frags || channel->bytes) |
| 602 | return; |
| 603 | |
| 604 | /* Fragment size must be a power of 2 */ |
| 605 | shift = 0; sz++; |
| 606 | while (sz >>= 1) |
| 607 | shift++; |
| 608 | channel->frag_sz = 1 << shift; |
| 609 | |
| 610 | /* Round fragment size to something reasonable */ |
| 611 | if (channel->frag_sz < FORTE_MIN_FRAG_SIZE) |
| 612 | channel->frag_sz = FORTE_MIN_FRAG_SIZE; |
| 613 | |
| 614 | if (channel->frag_sz > FORTE_MAX_FRAG_SIZE) |
| 615 | channel->frag_sz = FORTE_MAX_FRAG_SIZE; |
| 616 | |
| 617 | /* Find fragment length in milliseconds */ |
| 618 | msecs = channel->frag_sz / |
| 619 | (channel->format == AFMT_S16_LE ? 2 : 1) / |
| 620 | (channel->stereo ? 2 : 1) / |
| 621 | (channel->rate / 1000); |
| 622 | |
| 623 | channel->frag_msecs = msecs; |
| 624 | |
| 625 | /* Pick a suitable number of fragments */ |
| 626 | if (msecs * num < FORTE_MIN_BUF_MSECS) |
| 627 | num = FORTE_MIN_BUF_MSECS / msecs; |
| 628 | |
| 629 | if (msecs * num > FORTE_MAX_BUF_MSECS) |
| 630 | num = FORTE_MAX_BUF_MSECS / msecs; |
| 631 | |
| 632 | /* Fragment number must be a power of 2 */ |
| 633 | shift = 0; |
| 634 | while (num >>= 1) |
| 635 | shift++; |
| 636 | channel->frag_num = 1 << (shift + 1); |
| 637 | |
| 638 | /* Round fragment number to something reasonable */ |
| 639 | if (channel->frag_num < FORTE_MIN_FRAGMENTS) |
| 640 | channel->frag_num = FORTE_MIN_FRAGMENTS; |
| 641 | |
| 642 | if (channel->frag_num > FORTE_MAX_FRAGMENTS) |
| 643 | channel->frag_num = FORTE_MAX_FRAGMENTS; |
| 644 | |
| 645 | channel->buf_sz = channel->frag_sz * channel->frag_num; |
| 646 | |
| 647 | DPRINTK ("%s: %s frag_sz = %d, frag_num = %d, buf_sz = %d\n", |
| 648 | __FUNCTION__, channel->name, channel->frag_sz, |
| 649 | channel->frag_num, channel->buf_sz); |
| 650 | } |
| 651 | |
| 652 | |
| 653 | /** |
| 654 | * forte_channel_prep: |
| 655 | * @channel: Channel whose buffer to prepare |
| 656 | * |
| 657 | * Locking: Lock held. |
| 658 | */ |
| 659 | |
| 660 | static void |
| 661 | forte_channel_prep (struct forte_channel *channel) |
| 662 | { |
| 663 | struct page *page; |
| 664 | int i; |
| 665 | |
| 666 | if (channel->buf) |
| 667 | return; |
| 668 | |
| 669 | forte_channel_buffer (channel, channel->frag_sz, channel->frag_num); |
| 670 | channel->buf_pages = channel->buf_sz >> PAGE_SHIFT; |
| 671 | |
| 672 | if (channel->buf_sz % PAGE_SIZE) |
| 673 | channel->buf_pages++; |
| 674 | |
| 675 | DPRINTK ("%s: %s frag_sz = %d, frag_num = %d, buf_sz = %d, pg = %d\n", |
| 676 | __FUNCTION__, channel->name, channel->frag_sz, |
| 677 | channel->frag_num, channel->buf_sz, channel->buf_pages); |
| 678 | |
| 679 | /* DMA buffer */ |
| 680 | channel->buf = pci_alloc_consistent (forte->pci_dev, |
| 681 | channel->buf_pages * PAGE_SIZE, |
| 682 | &channel->buf_handle); |
| 683 | |
| 684 | if (!channel->buf || !channel->buf_handle) |
| 685 | BUG(); |
| 686 | |
| 687 | page = virt_to_page (channel->buf); |
| 688 | |
| 689 | /* FIXME: can this go away ? */ |
| 690 | for (i = 0 ; i < channel->buf_pages ; i++) |
| 691 | SetPageReserved(page++); |
| 692 | |
| 693 | /* Prep buffer registers */ |
| 694 | outw (channel->frag_sz - 1, channel->iobase + FORTE_PLY_COUNT); |
| 695 | outl (channel->buf_handle, channel->iobase + FORTE_PLY_BUF1); |
| 696 | outl (channel->buf_handle + channel->frag_sz, |
| 697 | channel->iobase + FORTE_PLY_BUF2); |
| 698 | |
| 699 | /* Reset hwptr */ |
| 700 | channel->hwptr = channel->frag_sz; |
| 701 | channel->next_buf = 1; |
| 702 | |
| 703 | DPRINTK ("%s: %s buffer @ %p (%p)\n", __FUNCTION__, channel->name, |
| 704 | channel->buf, channel->buf_handle); |
| 705 | } |
| 706 | |
| 707 | |
| 708 | /** |
| 709 | * forte_channel_drain: |
| 710 | * @chip: |
| 711 | * @channel: |
| 712 | * |
| 713 | * Locking: Don't hold the lock. |
| 714 | */ |
| 715 | |
| 716 | static inline int |
| 717 | forte_channel_drain (struct forte_channel *channel) |
| 718 | { |
| 719 | DECLARE_WAITQUEUE (wait, current); |
| 720 | unsigned long flags; |
| 721 | |
| 722 | DPRINTK ("%s\n", __FUNCTION__); |
| 723 | |
| 724 | if (channel->mapped) { |
| 725 | spin_lock_irqsave (&forte->lock, flags); |
| 726 | forte_channel_stop (channel); |
| 727 | spin_unlock_irqrestore (&forte->lock, flags); |
| 728 | return 0; |
| 729 | } |
| 730 | |
| 731 | spin_lock_irqsave (&forte->lock, flags); |
| 732 | add_wait_queue (&channel->wait, &wait); |
| 733 | |
| 734 | for (;;) { |
| 735 | if (channel->active == 0 || channel->filled_frags == 1) |
| 736 | break; |
| 737 | |
| 738 | spin_unlock_irqrestore (&forte->lock, flags); |
| 739 | |
| 740 | __set_current_state (TASK_INTERRUPTIBLE); |
| 741 | schedule(); |
| 742 | |
| 743 | spin_lock_irqsave (&forte->lock, flags); |
| 744 | } |
| 745 | |
| 746 | forte_channel_stop (channel); |
| 747 | forte_channel_reset (channel); |
| 748 | set_current_state (TASK_RUNNING); |
| 749 | remove_wait_queue (&channel->wait, &wait); |
| 750 | spin_unlock_irqrestore (&forte->lock, flags); |
| 751 | |
| 752 | return 0; |
| 753 | } |
| 754 | |
| 755 | |
| 756 | /** |
| 757 | * forte_channel_init: |
| 758 | * @chip: Forte chip instance the channel hangs off |
| 759 | * @channel: Channel to initialize |
| 760 | * |
| 761 | * Description: |
| 762 | * Initializes a channel, sets defaults, and allocates |
| 763 | * buffers. |
| 764 | * |
| 765 | * Locking: No lock held. |
| 766 | */ |
| 767 | |
| 768 | static int |
| 769 | forte_channel_init (struct forte_chip *chip, struct forte_channel *channel) |
| 770 | { |
| 771 | DPRINTK ("%s: chip iobase @ %p\n", __FUNCTION__, (void *)chip->iobase); |
| 772 | |
| 773 | spin_lock_irq (&chip->lock); |
| 774 | memset (channel, 0x0, sizeof (*channel)); |
| 775 | |
| 776 | if (channel == &chip->play) { |
| 777 | channel->name = "PCM_OUT"; |
| 778 | channel->iobase = chip->iobase; |
| 779 | DPRINTK ("%s: PCM-OUT iobase @ %p\n", __FUNCTION__, |
| 780 | (void *) channel->iobase); |
| 781 | } |
| 782 | else if (channel == &chip->rec) { |
| 783 | channel->name = "PCM_IN"; |
| 784 | channel->iobase = chip->iobase + FORTE_CAP_OFFSET; |
| 785 | channel->record = 1; |
| 786 | DPRINTK ("%s: PCM-IN iobase @ %p\n", __FUNCTION__, |
| 787 | (void *) channel->iobase); |
| 788 | } |
| 789 | else |
| 790 | BUG(); |
| 791 | |
| 792 | init_waitqueue_head (&channel->wait); |
| 793 | |
| 794 | /* Defaults: 48kHz, 16-bit, stereo */ |
| 795 | channel->ctrl = inw (channel->iobase + FORTE_PLY_CTRL); |
| 796 | forte_channel_reset (channel); |
| 797 | forte_channel_stereo (channel, 1); |
| 798 | forte_channel_format (channel, AFMT_S16_LE); |
| 799 | forte_channel_rate (channel, 48000); |
| 800 | channel->frag_sz = FORTE_DEF_FRAG_SIZE; |
| 801 | channel->frag_num = FORTE_DEF_FRAGMENTS; |
| 802 | |
| 803 | chip->trigger = 0; |
| 804 | spin_unlock_irq (&chip->lock); |
| 805 | |
| 806 | return 0; |
| 807 | } |
| 808 | |
| 809 | |
| 810 | /** |
| 811 | * forte_channel_free: |
| 812 | * @chip: Chip this channel hangs off |
| 813 | * @channel: Channel to nuke |
| 814 | * |
| 815 | * Description: |
| 816 | * Resets channel and frees buffers. |
| 817 | * |
| 818 | * Locking: Hold your horses. |
| 819 | */ |
| 820 | |
| 821 | static void |
| 822 | forte_channel_free (struct forte_chip *chip, struct forte_channel *channel) |
| 823 | { |
| 824 | DPRINTK ("%s: %s\n", __FUNCTION__, channel->name); |
| 825 | |
| 826 | if (!channel->buf_handle) |
| 827 | return; |
| 828 | |
| 829 | pci_free_consistent (chip->pci_dev, channel->buf_pages * PAGE_SIZE, |
| 830 | channel->buf, channel->buf_handle); |
| 831 | |
| 832 | memset (channel, 0x0, sizeof (*channel)); |
| 833 | } |
| 834 | |
| 835 | |
| 836 | /* DSP --------------------------------------------------------------------- */ |
| 837 | |
| 838 | |
| 839 | /** |
| 840 | * forte_dsp_ioctl: |
| 841 | */ |
| 842 | |
| 843 | static int |
| 844 | forte_dsp_ioctl (struct inode *inode, struct file *file, unsigned int cmd, |
| 845 | unsigned long arg) |
| 846 | { |
| 847 | int ival=0, ret, rval=0, rd, wr, count; |
| 848 | struct forte_chip *chip; |
| 849 | struct audio_buf_info abi; |
| 850 | struct count_info cinfo; |
| 851 | void __user *argp = (void __user *)arg; |
| 852 | int __user *p = argp; |
| 853 | |
| 854 | chip = file->private_data; |
| 855 | |
| 856 | if (file->f_mode & FMODE_WRITE) |
| 857 | wr = 1; |
| 858 | else |
| 859 | wr = 0; |
| 860 | |
| 861 | if (file->f_mode & FMODE_READ) |
| 862 | rd = 1; |
| 863 | else |
| 864 | rd = 0; |
| 865 | |
| 866 | switch (cmd) { |
| 867 | |
| 868 | case OSS_GETVERSION: |
| 869 | return put_user (SOUND_VERSION, p); |
| 870 | |
| 871 | case SNDCTL_DSP_GETCAPS: |
| 872 | DPRINTK ("%s: GETCAPS\n", __FUNCTION__); |
| 873 | |
| 874 | ival = FORTE_CAPS; /* DUPLEX */ |
| 875 | return put_user (ival, p); |
| 876 | |
| 877 | case SNDCTL_DSP_GETFMTS: |
| 878 | DPRINTK ("%s: GETFMTS\n", __FUNCTION__); |
| 879 | |
| 880 | ival = FORTE_FMTS; /* U8, 16LE */ |
| 881 | return put_user (ival, p); |
| 882 | |
| 883 | case SNDCTL_DSP_SETFMT: /* U8, 16LE */ |
| 884 | DPRINTK ("%s: SETFMT\n", __FUNCTION__); |
| 885 | |
| 886 | if (get_user (ival, p)) |
| 887 | return -EFAULT; |
| 888 | |
| 889 | spin_lock_irq (&chip->lock); |
| 890 | |
| 891 | if (rd) { |
| 892 | forte_channel_stop (&chip->rec); |
| 893 | rval = forte_channel_format (&chip->rec, ival); |
| 894 | } |
| 895 | |
| 896 | if (wr) { |
| 897 | forte_channel_stop (&chip->rec); |
| 898 | rval = forte_channel_format (&chip->play, ival); |
| 899 | } |
| 900 | |
| 901 | spin_unlock_irq (&chip->lock); |
| 902 | |
| 903 | return put_user (rval, p); |
| 904 | |
| 905 | case SNDCTL_DSP_STEREO: /* 0 - mono, 1 - stereo */ |
| 906 | DPRINTK ("%s: STEREO\n", __FUNCTION__); |
| 907 | |
| 908 | if (get_user (ival, p)) |
| 909 | return -EFAULT; |
| 910 | |
| 911 | spin_lock_irq (&chip->lock); |
| 912 | |
| 913 | if (rd) { |
| 914 | forte_channel_stop (&chip->rec); |
| 915 | rval = forte_channel_stereo (&chip->rec, ival); |
| 916 | } |
| 917 | |
| 918 | if (wr) { |
| 919 | forte_channel_stop (&chip->rec); |
| 920 | rval = forte_channel_stereo (&chip->play, ival); |
| 921 | } |
| 922 | |
| 923 | spin_unlock_irq (&chip->lock); |
| 924 | |
| 925 | return put_user (rval, p); |
| 926 | |
| 927 | case SNDCTL_DSP_CHANNELS: /* 1 - mono, 2 - stereo */ |
| 928 | DPRINTK ("%s: CHANNELS\n", __FUNCTION__); |
| 929 | |
| 930 | if (get_user (ival, p)) |
| 931 | return -EFAULT; |
| 932 | |
| 933 | spin_lock_irq (&chip->lock); |
| 934 | |
| 935 | if (rd) { |
| 936 | forte_channel_stop (&chip->rec); |
| 937 | rval = forte_channel_stereo (&chip->rec, ival-1) + 1; |
| 938 | } |
| 939 | |
| 940 | if (wr) { |
| 941 | forte_channel_stop (&chip->play); |
| 942 | rval = forte_channel_stereo (&chip->play, ival-1) + 1; |
| 943 | } |
| 944 | |
| 945 | spin_unlock_irq (&chip->lock); |
| 946 | |
| 947 | return put_user (rval, p); |
| 948 | |
| 949 | case SNDCTL_DSP_SPEED: |
| 950 | DPRINTK ("%s: SPEED\n", __FUNCTION__); |
| 951 | |
| 952 | if (get_user (ival, p)) |
| 953 | return -EFAULT; |
| 954 | |
| 955 | spin_lock_irq (&chip->lock); |
| 956 | |
| 957 | if (rd) { |
| 958 | forte_channel_stop (&chip->rec); |
| 959 | rval = forte_channel_rate (&chip->rec, ival); |
| 960 | } |
| 961 | |
| 962 | if (wr) { |
| 963 | forte_channel_stop (&chip->play); |
| 964 | rval = forte_channel_rate (&chip->play, ival); |
| 965 | } |
| 966 | |
| 967 | spin_unlock_irq (&chip->lock); |
| 968 | |
| 969 | return put_user(rval, p); |
| 970 | |
| 971 | case SNDCTL_DSP_GETBLKSIZE: |
| 972 | DPRINTK ("%s: GETBLKSIZE\n", __FUNCTION__); |
| 973 | |
| 974 | spin_lock_irq (&chip->lock); |
| 975 | |
| 976 | if (rd) |
| 977 | ival = chip->rec.frag_sz; |
| 978 | |
| 979 | if (wr) |
| 980 | ival = chip->play.frag_sz; |
| 981 | |
| 982 | spin_unlock_irq (&chip->lock); |
| 983 | |
| 984 | return put_user (ival, p); |
| 985 | |
| 986 | case SNDCTL_DSP_RESET: |
| 987 | DPRINTK ("%s: RESET\n", __FUNCTION__); |
| 988 | |
| 989 | spin_lock_irq (&chip->lock); |
| 990 | |
| 991 | if (rd) |
| 992 | forte_channel_reset (&chip->rec); |
| 993 | |
| 994 | if (wr) |
| 995 | forte_channel_reset (&chip->play); |
| 996 | |
| 997 | spin_unlock_irq (&chip->lock); |
| 998 | |
| 999 | return 0; |
| 1000 | |
| 1001 | case SNDCTL_DSP_SYNC: |
| 1002 | DPRINTK ("%s: SYNC\n", __FUNCTION__); |
| 1003 | |
| 1004 | if (wr) |
| 1005 | ret = forte_channel_drain (&chip->play); |
| 1006 | |
| 1007 | return 0; |
| 1008 | |
| 1009 | case SNDCTL_DSP_POST: |
| 1010 | DPRINTK ("%s: POST\n", __FUNCTION__); |
| 1011 | |
| 1012 | if (wr) { |
| 1013 | spin_lock_irq (&chip->lock); |
| 1014 | |
| 1015 | if (chip->play.filled_frags) |
| 1016 | forte_channel_start (&chip->play); |
| 1017 | |
| 1018 | spin_unlock_irq (&chip->lock); |
| 1019 | } |
| 1020 | |
| 1021 | return 0; |
| 1022 | |
| 1023 | case SNDCTL_DSP_SETFRAGMENT: |
| 1024 | DPRINTK ("%s: SETFRAGMENT\n", __FUNCTION__); |
| 1025 | |
| 1026 | if (get_user (ival, p)) |
| 1027 | return -EFAULT; |
| 1028 | |
| 1029 | spin_lock_irq (&chip->lock); |
| 1030 | |
| 1031 | if (rd) { |
| 1032 | forte_channel_buffer (&chip->rec, ival & 0xffff, |
| 1033 | (ival >> 16) & 0xffff); |
| 1034 | ival = (chip->rec.frag_num << 16) + chip->rec.frag_sz; |
| 1035 | } |
| 1036 | |
| 1037 | if (wr) { |
| 1038 | forte_channel_buffer (&chip->play, ival & 0xffff, |
| 1039 | (ival >> 16) & 0xffff); |
| 1040 | ival = (chip->play.frag_num << 16) +chip->play.frag_sz; |
| 1041 | } |
| 1042 | |
| 1043 | spin_unlock_irq (&chip->lock); |
| 1044 | |
| 1045 | return put_user (ival, p); |
| 1046 | |
| 1047 | case SNDCTL_DSP_GETISPACE: |
| 1048 | DPRINTK ("%s: GETISPACE\n", __FUNCTION__); |
| 1049 | |
| 1050 | if (!rd) |
| 1051 | return -EINVAL; |
| 1052 | |
| 1053 | spin_lock_irq (&chip->lock); |
| 1054 | |
| 1055 | abi.fragstotal = chip->rec.frag_num; |
| 1056 | abi.fragsize = chip->rec.frag_sz; |
| 1057 | |
| 1058 | if (chip->rec.mapped) { |
| 1059 | abi.fragments = chip->rec.frag_num - 2; |
| 1060 | abi.bytes = abi.fragments * abi.fragsize; |
| 1061 | } |
| 1062 | else { |
| 1063 | abi.fragments = chip->rec.filled_frags; |
| 1064 | abi.bytes = abi.fragments * abi.fragsize; |
| 1065 | } |
| 1066 | |
| 1067 | spin_unlock_irq (&chip->lock); |
| 1068 | |
| 1069 | return copy_to_user (argp, &abi, sizeof (abi)) ? -EFAULT : 0; |
| 1070 | |
| 1071 | case SNDCTL_DSP_GETIPTR: |
| 1072 | DPRINTK ("%s: GETIPTR\n", __FUNCTION__); |
| 1073 | |
| 1074 | if (!rd) |
| 1075 | return -EINVAL; |
| 1076 | |
| 1077 | spin_lock_irq (&chip->lock); |
| 1078 | |
| 1079 | if (chip->rec.active) |
| 1080 | cinfo.ptr = chip->rec.hwptr; |
| 1081 | else |
| 1082 | cinfo.ptr = 0; |
| 1083 | |
| 1084 | cinfo.bytes = chip->rec.bytes; |
| 1085 | cinfo.blocks = chip->rec.nr_irqs; |
| 1086 | chip->rec.nr_irqs = 0; |
| 1087 | |
| 1088 | spin_unlock_irq (&chip->lock); |
| 1089 | |
| 1090 | return copy_to_user (argp, &cinfo, sizeof (cinfo)) ? -EFAULT : 0; |
| 1091 | |
| 1092 | case SNDCTL_DSP_GETOSPACE: |
| 1093 | if (!wr) |
| 1094 | return -EINVAL; |
| 1095 | |
| 1096 | spin_lock_irq (&chip->lock); |
| 1097 | |
| 1098 | abi.fragstotal = chip->play.frag_num; |
| 1099 | abi.fragsize = chip->play.frag_sz; |
| 1100 | |
| 1101 | if (chip->play.mapped) { |
| 1102 | abi.fragments = chip->play.frag_num - 2; |
| 1103 | abi.bytes = chip->play.buf_sz; |
| 1104 | } |
| 1105 | else { |
| 1106 | abi.fragments = chip->play.frag_num - |
| 1107 | chip->play.filled_frags; |
| 1108 | |
| 1109 | if (chip->play.residue) |
| 1110 | abi.fragments--; |
| 1111 | |
| 1112 | abi.bytes = abi.fragments * abi.fragsize + |
| 1113 | chip->play.residue; |
| 1114 | } |
| 1115 | |
| 1116 | spin_unlock_irq (&chip->lock); |
| 1117 | |
| 1118 | return copy_to_user (argp, &abi, sizeof (abi)) ? -EFAULT : 0; |
| 1119 | |
| 1120 | case SNDCTL_DSP_GETOPTR: |
| 1121 | if (!wr) |
| 1122 | return -EINVAL; |
| 1123 | |
| 1124 | spin_lock_irq (&chip->lock); |
| 1125 | |
| 1126 | if (chip->play.active) |
| 1127 | cinfo.ptr = chip->play.hwptr; |
| 1128 | else |
| 1129 | cinfo.ptr = 0; |
| 1130 | |
| 1131 | cinfo.bytes = chip->play.bytes; |
| 1132 | cinfo.blocks = chip->play.nr_irqs; |
| 1133 | chip->play.nr_irqs = 0; |
| 1134 | |
| 1135 | spin_unlock_irq (&chip->lock); |
| 1136 | |
| 1137 | return copy_to_user (argp, &cinfo, sizeof (cinfo)) ? -EFAULT : 0; |
| 1138 | |
| 1139 | case SNDCTL_DSP_GETODELAY: |
| 1140 | if (!wr) |
| 1141 | return -EINVAL; |
| 1142 | |
| 1143 | spin_lock_irq (&chip->lock); |
| 1144 | |
| 1145 | if (!chip->play.active) { |
| 1146 | ival = 0; |
| 1147 | } |
| 1148 | else if (chip->play.mapped) { |
| 1149 | count = inw (chip->play.iobase + FORTE_PLY_COUNT) + 1; |
| 1150 | ival = chip->play.frag_sz - count; |
| 1151 | } |
| 1152 | else { |
| 1153 | ival = chip->play.filled_frags * chip->play.frag_sz; |
| 1154 | |
| 1155 | if (chip->play.residue) |
| 1156 | ival += chip->play.frag_sz - chip->play.residue; |
| 1157 | } |
| 1158 | |
| 1159 | spin_unlock_irq (&chip->lock); |
| 1160 | |
| 1161 | return put_user (ival, p); |
| 1162 | |
| 1163 | case SNDCTL_DSP_SETDUPLEX: |
| 1164 | DPRINTK ("%s: SETDUPLEX\n", __FUNCTION__); |
| 1165 | |
| 1166 | return -EINVAL; |
| 1167 | |
| 1168 | case SNDCTL_DSP_GETTRIGGER: |
| 1169 | DPRINTK ("%s: GETTRIGGER\n", __FUNCTION__); |
| 1170 | |
| 1171 | return put_user (chip->trigger, p); |
| 1172 | |
| 1173 | case SNDCTL_DSP_SETTRIGGER: |
| 1174 | |
| 1175 | if (get_user (ival, p)) |
| 1176 | return -EFAULT; |
| 1177 | |
| 1178 | DPRINTK ("%s: SETTRIGGER %d\n", __FUNCTION__, ival); |
| 1179 | |
| 1180 | if (wr) { |
| 1181 | spin_lock_irq (&chip->lock); |
| 1182 | |
| 1183 | if (ival & PCM_ENABLE_OUTPUT) |
| 1184 | forte_channel_start (&chip->play); |
| 1185 | else { |
| 1186 | chip->trigger = 1; |
| 1187 | forte_channel_prep (&chip->play); |
| 1188 | forte_channel_stop (&chip->play); |
| 1189 | } |
| 1190 | |
| 1191 | spin_unlock_irq (&chip->lock); |
| 1192 | } |
| 1193 | else if (rd) { |
| 1194 | spin_lock_irq (&chip->lock); |
| 1195 | |
| 1196 | if (ival & PCM_ENABLE_INPUT) |
| 1197 | forte_channel_start (&chip->rec); |
| 1198 | else { |
| 1199 | chip->trigger = 1; |
| 1200 | forte_channel_prep (&chip->rec); |
| 1201 | forte_channel_stop (&chip->rec); |
| 1202 | } |
| 1203 | |
| 1204 | spin_unlock_irq (&chip->lock); |
| 1205 | } |
| 1206 | |
| 1207 | return 0; |
| 1208 | |
| 1209 | case SOUND_PCM_READ_RATE: |
| 1210 | DPRINTK ("%s: PCM_READ_RATE\n", __FUNCTION__); |
| 1211 | return put_user (chip->play.rate, p); |
| 1212 | |
| 1213 | case SOUND_PCM_READ_CHANNELS: |
| 1214 | DPRINTK ("%s: PCM_READ_CHANNELS\n", __FUNCTION__); |
| 1215 | return put_user (chip->play.stereo, p); |
| 1216 | |
| 1217 | case SOUND_PCM_READ_BITS: |
| 1218 | DPRINTK ("%s: PCM_READ_BITS\n", __FUNCTION__); |
| 1219 | return put_user (chip->play.format, p); |
| 1220 | |
| 1221 | case SNDCTL_DSP_NONBLOCK: |
| 1222 | DPRINTK ("%s: DSP_NONBLOCK\n", __FUNCTION__); |
| 1223 | file->f_flags |= O_NONBLOCK; |
| 1224 | return 0; |
| 1225 | |
| 1226 | default: |
| 1227 | DPRINTK ("Unsupported ioctl: %x (%p)\n", cmd, argp); |
| 1228 | break; |
| 1229 | } |
| 1230 | |
| 1231 | return -EINVAL; |
| 1232 | } |
| 1233 | |
| 1234 | |
| 1235 | /** |
| 1236 | * forte_dsp_open: |
| 1237 | */ |
| 1238 | |
| 1239 | static int |
| 1240 | forte_dsp_open (struct inode *inode, struct file *file) |
| 1241 | { |
| 1242 | struct forte_chip *chip = forte; /* FIXME: HACK FROM HELL! */ |
| 1243 | |
| 1244 | if (file->f_flags & O_NONBLOCK) { |
| 1245 | if (down_trylock (&chip->open_sem)) { |
| 1246 | DPRINTK ("%s: returning -EAGAIN\n", __FUNCTION__); |
| 1247 | return -EAGAIN; |
| 1248 | } |
| 1249 | } |
| 1250 | else { |
| 1251 | if (down_interruptible (&chip->open_sem)) { |
| 1252 | DPRINTK ("%s: returning -ERESTARTSYS\n", __FUNCTION__); |
| 1253 | return -ERESTARTSYS; |
| 1254 | } |
| 1255 | } |
| 1256 | |
| 1257 | file->private_data = forte; |
| 1258 | |
| 1259 | DPRINTK ("%s: dsp opened by %d\n", __FUNCTION__, current->pid); |
| 1260 | |
| 1261 | if (file->f_mode & FMODE_WRITE) |
| 1262 | forte_channel_init (forte, &forte->play); |
| 1263 | |
| 1264 | if (file->f_mode & FMODE_READ) |
| 1265 | forte_channel_init (forte, &forte->rec); |
| 1266 | |
| 1267 | return nonseekable_open(inode, file); |
| 1268 | } |
| 1269 | |
| 1270 | |
| 1271 | /** |
| 1272 | * forte_dsp_release: |
| 1273 | */ |
| 1274 | |
| 1275 | static int |
| 1276 | forte_dsp_release (struct inode *inode, struct file *file) |
| 1277 | { |
| 1278 | struct forte_chip *chip = file->private_data; |
| 1279 | int ret = 0; |
| 1280 | |
| 1281 | DPRINTK ("%s: chip @ %p\n", __FUNCTION__, chip); |
| 1282 | |
| 1283 | if (file->f_mode & FMODE_WRITE) { |
| 1284 | forte_channel_drain (&chip->play); |
| 1285 | |
| 1286 | spin_lock_irq (&chip->lock); |
| 1287 | |
| 1288 | forte_channel_free (chip, &chip->play); |
| 1289 | |
| 1290 | spin_unlock_irq (&chip->lock); |
| 1291 | } |
| 1292 | |
| 1293 | if (file->f_mode & FMODE_READ) { |
| 1294 | while (chip->rec.filled_frags > 0) |
| 1295 | interruptible_sleep_on (&chip->rec.wait); |
| 1296 | |
| 1297 | spin_lock_irq (&chip->lock); |
| 1298 | |
| 1299 | forte_channel_stop (&chip->rec); |
| 1300 | forte_channel_free (chip, &chip->rec); |
| 1301 | |
| 1302 | spin_unlock_irq (&chip->lock); |
| 1303 | } |
| 1304 | |
| 1305 | up (&chip->open_sem); |
| 1306 | |
| 1307 | return ret; |
| 1308 | } |
| 1309 | |
| 1310 | |
| 1311 | /** |
| 1312 | * forte_dsp_poll: |
| 1313 | * |
| 1314 | */ |
| 1315 | |
| 1316 | static unsigned int |
| 1317 | forte_dsp_poll (struct file *file, struct poll_table_struct *wait) |
| 1318 | { |
| 1319 | struct forte_chip *chip; |
| 1320 | struct forte_channel *channel; |
| 1321 | unsigned int mask = 0; |
| 1322 | |
| 1323 | chip = file->private_data; |
| 1324 | |
| 1325 | if (file->f_mode & FMODE_WRITE) { |
| 1326 | channel = &chip->play; |
| 1327 | |
| 1328 | if (channel->active) |
| 1329 | poll_wait (file, &channel->wait, wait); |
| 1330 | |
| 1331 | spin_lock_irq (&chip->lock); |
| 1332 | |
| 1333 | if (channel->frag_num - channel->filled_frags > 0) |
| 1334 | mask |= POLLOUT | POLLWRNORM; |
| 1335 | |
| 1336 | spin_unlock_irq (&chip->lock); |
| 1337 | } |
| 1338 | |
| 1339 | if (file->f_mode & FMODE_READ) { |
| 1340 | channel = &chip->rec; |
| 1341 | |
| 1342 | if (channel->active) |
| 1343 | poll_wait (file, &channel->wait, wait); |
| 1344 | |
| 1345 | spin_lock_irq (&chip->lock); |
| 1346 | |
| 1347 | if (channel->filled_frags > 0) |
| 1348 | mask |= POLLIN | POLLRDNORM; |
| 1349 | |
| 1350 | spin_unlock_irq (&chip->lock); |
| 1351 | } |
| 1352 | |
| 1353 | return mask; |
| 1354 | } |
| 1355 | |
| 1356 | |
| 1357 | /** |
| 1358 | * forte_dsp_mmap: |
| 1359 | */ |
| 1360 | |
| 1361 | static int |
| 1362 | forte_dsp_mmap (struct file *file, struct vm_area_struct *vma) |
| 1363 | { |
| 1364 | struct forte_chip *chip; |
| 1365 | struct forte_channel *channel; |
| 1366 | unsigned long size; |
| 1367 | int ret; |
| 1368 | |
| 1369 | chip = file->private_data; |
| 1370 | |
| 1371 | DPRINTK ("%s: start %lXh, size %ld, pgoff %ld\n", __FUNCTION__, |
| 1372 | vma->vm_start, vma->vm_end - vma->vm_start, vma->vm_pgoff); |
| 1373 | |
| 1374 | spin_lock_irq (&chip->lock); |
| 1375 | |
| 1376 | if (vma->vm_flags & VM_WRITE && chip->play.active) { |
| 1377 | ret = -EBUSY; |
| 1378 | goto out; |
| 1379 | } |
| 1380 | |
| 1381 | if (vma->vm_flags & VM_READ && chip->rec.active) { |
| 1382 | ret = -EBUSY; |
| 1383 | goto out; |
| 1384 | } |
| 1385 | |
| 1386 | if (file->f_mode & FMODE_WRITE) |
| 1387 | channel = &chip->play; |
| 1388 | else if (file->f_mode & FMODE_READ) |
| 1389 | channel = &chip->rec; |
| 1390 | else { |
| 1391 | ret = -EINVAL; |
| 1392 | goto out; |
| 1393 | } |
| 1394 | |
| 1395 | forte_channel_prep (channel); |
| 1396 | channel->mapped = 1; |
| 1397 | |
| 1398 | if (vma->vm_pgoff != 0) { |
| 1399 | ret = -EINVAL; |
| 1400 | goto out; |
| 1401 | } |
| 1402 | |
| 1403 | size = vma->vm_end - vma->vm_start; |
| 1404 | |
| 1405 | if (size > channel->buf_pages * PAGE_SIZE) { |
| 1406 | DPRINTK ("%s: size (%ld) > buf_sz (%d) \n", __FUNCTION__, |
| 1407 | size, channel->buf_sz); |
| 1408 | ret = -EINVAL; |
| 1409 | goto out; |
| 1410 | } |
| 1411 | |
| 1412 | if (remap_pfn_range(vma, vma->vm_start, |
| 1413 | virt_to_phys(channel->buf) >> PAGE_SHIFT, |
| 1414 | size, vma->vm_page_prot)) { |
| 1415 | DPRINTK ("%s: remap el a no worko\n", __FUNCTION__); |
| 1416 | ret = -EAGAIN; |
| 1417 | goto out; |
| 1418 | } |
| 1419 | |
| 1420 | ret = 0; |
| 1421 | |
| 1422 | out: |
| 1423 | spin_unlock_irq (&chip->lock); |
| 1424 | return ret; |
| 1425 | } |
| 1426 | |
| 1427 | |
| 1428 | /** |
| 1429 | * forte_dsp_write: |
| 1430 | */ |
| 1431 | |
| 1432 | static ssize_t |
| 1433 | forte_dsp_write (struct file *file, const char __user *buffer, size_t bytes, |
| 1434 | loff_t *ppos) |
| 1435 | { |
| 1436 | struct forte_chip *chip; |
| 1437 | struct forte_channel *channel; |
| 1438 | unsigned int i = bytes, sz = 0; |
| 1439 | unsigned long flags; |
| 1440 | |
| 1441 | if (!access_ok (VERIFY_READ, buffer, bytes)) |
| 1442 | return -EFAULT; |
| 1443 | |
| 1444 | chip = (struct forte_chip *) file->private_data; |
| 1445 | |
| 1446 | if (!chip) |
| 1447 | BUG(); |
| 1448 | |
| 1449 | channel = &chip->play; |
| 1450 | |
| 1451 | if (!channel) |
| 1452 | BUG(); |
| 1453 | |
| 1454 | spin_lock_irqsave (&chip->lock, flags); |
| 1455 | |
| 1456 | /* Set up buffers with the right fragment size */ |
| 1457 | forte_channel_prep (channel); |
| 1458 | |
| 1459 | while (i) { |
| 1460 | /* All fragment buffers in use -> wait */ |
| 1461 | if (channel->frag_num - channel->filled_frags == 0) { |
| 1462 | DECLARE_WAITQUEUE (wait, current); |
| 1463 | |
| 1464 | /* For trigger or non-blocking operation, get out */ |
| 1465 | if (chip->trigger || file->f_flags & O_NONBLOCK) { |
| 1466 | spin_unlock_irqrestore (&chip->lock, flags); |
| 1467 | return -EAGAIN; |
| 1468 | } |
| 1469 | |
| 1470 | /* Otherwise wait for buffers */ |
| 1471 | add_wait_queue (&channel->wait, &wait); |
| 1472 | |
| 1473 | for (;;) { |
| 1474 | spin_unlock_irqrestore (&chip->lock, flags); |
| 1475 | |
| 1476 | set_current_state (TASK_INTERRUPTIBLE); |
| 1477 | schedule(); |
| 1478 | |
| 1479 | spin_lock_irqsave (&chip->lock, flags); |
| 1480 | |
| 1481 | if (channel->frag_num - channel->filled_frags) |
| 1482 | break; |
| 1483 | } |
| 1484 | |
| 1485 | remove_wait_queue (&channel->wait, &wait); |
| 1486 | set_current_state (TASK_RUNNING); |
| 1487 | |
| 1488 | if (signal_pending (current)) { |
| 1489 | spin_unlock_irqrestore (&chip->lock, flags); |
| 1490 | return -ERESTARTSYS; |
| 1491 | } |
| 1492 | } |
| 1493 | |
| 1494 | if (channel->residue) |
| 1495 | sz = channel->residue; |
| 1496 | else if (i > channel->frag_sz) |
| 1497 | sz = channel->frag_sz; |
| 1498 | else |
| 1499 | sz = i; |
| 1500 | |
| 1501 | spin_unlock_irqrestore (&chip->lock, flags); |
| 1502 | |
| 1503 | if (copy_from_user ((void *) channel->buf + channel->swptr, buffer, sz)) |
| 1504 | return -EFAULT; |
| 1505 | |
| 1506 | spin_lock_irqsave (&chip->lock, flags); |
| 1507 | |
| 1508 | /* Advance software pointer */ |
| 1509 | buffer += sz; |
| 1510 | channel->swptr += sz; |
| 1511 | channel->swptr %= channel->buf_sz; |
| 1512 | i -= sz; |
| 1513 | |
| 1514 | /* Only bump filled_frags if a full fragment has been written */ |
| 1515 | if (channel->swptr % channel->frag_sz == 0) { |
| 1516 | channel->filled_frags++; |
| 1517 | channel->residue = 0; |
| 1518 | } |
| 1519 | else |
| 1520 | channel->residue = channel->frag_sz - sz; |
| 1521 | |
| 1522 | /* If playback isn't active, start it */ |
| 1523 | if (channel->active == 0 && chip->trigger == 0) |
| 1524 | forte_channel_start (channel); |
| 1525 | } |
| 1526 | |
| 1527 | spin_unlock_irqrestore (&chip->lock, flags); |
| 1528 | |
| 1529 | return bytes - i; |
| 1530 | } |
| 1531 | |
| 1532 | |
| 1533 | /** |
| 1534 | * forte_dsp_read: |
| 1535 | */ |
| 1536 | |
| 1537 | static ssize_t |
| 1538 | forte_dsp_read (struct file *file, char __user *buffer, size_t bytes, |
| 1539 | loff_t *ppos) |
| 1540 | { |
| 1541 | struct forte_chip *chip; |
| 1542 | struct forte_channel *channel; |
| 1543 | unsigned int i = bytes, sz; |
| 1544 | unsigned long flags; |
| 1545 | |
| 1546 | if (!access_ok (VERIFY_WRITE, buffer, bytes)) |
| 1547 | return -EFAULT; |
| 1548 | |
| 1549 | chip = (struct forte_chip *) file->private_data; |
| 1550 | |
| 1551 | if (!chip) |
| 1552 | BUG(); |
| 1553 | |
| 1554 | channel = &chip->rec; |
| 1555 | |
| 1556 | if (!channel) |
| 1557 | BUG(); |
| 1558 | |
| 1559 | spin_lock_irqsave (&chip->lock, flags); |
| 1560 | |
| 1561 | /* Set up buffers with the right fragment size */ |
| 1562 | forte_channel_prep (channel); |
| 1563 | |
| 1564 | /* Start recording */ |
| 1565 | if (!chip->trigger) |
| 1566 | forte_channel_start (channel); |
| 1567 | |
| 1568 | while (i) { |
| 1569 | /* No fragment buffers in use -> wait */ |
| 1570 | if (channel->filled_frags == 0) { |
| 1571 | DECLARE_WAITQUEUE (wait, current); |
| 1572 | |
| 1573 | /* For trigger mode operation, get out */ |
| 1574 | if (chip->trigger) { |
| 1575 | spin_unlock_irqrestore (&chip->lock, flags); |
| 1576 | return -EAGAIN; |
| 1577 | } |
| 1578 | |
| 1579 | add_wait_queue (&channel->wait, &wait); |
| 1580 | |
| 1581 | for (;;) { |
| 1582 | if (channel->active == 0) |
| 1583 | break; |
| 1584 | |
| 1585 | if (channel->filled_frags) |
| 1586 | break; |
| 1587 | |
| 1588 | spin_unlock_irqrestore (&chip->lock, flags); |
| 1589 | |
| 1590 | set_current_state (TASK_INTERRUPTIBLE); |
| 1591 | schedule(); |
| 1592 | |
| 1593 | spin_lock_irqsave (&chip->lock, flags); |
| 1594 | } |
| 1595 | |
| 1596 | set_current_state (TASK_RUNNING); |
| 1597 | remove_wait_queue (&channel->wait, &wait); |
| 1598 | } |
| 1599 | |
| 1600 | if (i > channel->frag_sz) |
| 1601 | sz = channel->frag_sz; |
| 1602 | else |
| 1603 | sz = i; |
| 1604 | |
| 1605 | spin_unlock_irqrestore (&chip->lock, flags); |
| 1606 | |
| 1607 | if (copy_to_user (buffer, (void *)channel->buf+channel->swptr, sz)) { |
| 1608 | DPRINTK ("%s: copy_to_user failed\n", __FUNCTION__); |
| 1609 | return -EFAULT; |
| 1610 | } |
| 1611 | |
| 1612 | spin_lock_irqsave (&chip->lock, flags); |
| 1613 | |
| 1614 | /* Advance software pointer */ |
| 1615 | buffer += sz; |
| 1616 | if (channel->filled_frags > 0) |
| 1617 | channel->filled_frags--; |
| 1618 | channel->swptr += channel->frag_sz; |
| 1619 | channel->swptr %= channel->buf_sz; |
| 1620 | i -= sz; |
| 1621 | } |
| 1622 | |
| 1623 | spin_unlock_irqrestore (&chip->lock, flags); |
| 1624 | |
| 1625 | return bytes - i; |
| 1626 | } |
| 1627 | |
| 1628 | |
| 1629 | static struct file_operations forte_dsp_fops = { |
| 1630 | .owner = THIS_MODULE, |
| 1631 | .llseek = &no_llseek, |
| 1632 | .read = &forte_dsp_read, |
| 1633 | .write = &forte_dsp_write, |
| 1634 | .poll = &forte_dsp_poll, |
| 1635 | .ioctl = &forte_dsp_ioctl, |
| 1636 | .open = &forte_dsp_open, |
| 1637 | .release = &forte_dsp_release, |
| 1638 | .mmap = &forte_dsp_mmap, |
| 1639 | }; |
| 1640 | |
| 1641 | |
| 1642 | /* Common ------------------------------------------------------------------ */ |
| 1643 | |
| 1644 | |
| 1645 | /** |
| 1646 | * forte_interrupt: |
| 1647 | */ |
| 1648 | |
| 1649 | static irqreturn_t |
| 1650 | forte_interrupt (int irq, void *dev_id, struct pt_regs *regs) |
| 1651 | { |
| 1652 | struct forte_chip *chip = dev_id; |
| 1653 | struct forte_channel *channel = NULL; |
| 1654 | u16 status, count; |
| 1655 | |
| 1656 | status = inw (chip->iobase + FORTE_IRQ_STATUS); |
| 1657 | |
| 1658 | /* If this is not for us, get outta here ASAP */ |
| 1659 | if ((status & (FORTE_IRQ_PLAYBACK | FORTE_IRQ_CAPTURE)) == 0) |
| 1660 | return IRQ_NONE; |
| 1661 | |
| 1662 | if (status & FORTE_IRQ_PLAYBACK) { |
| 1663 | channel = &chip->play; |
| 1664 | |
| 1665 | spin_lock (&chip->lock); |
| 1666 | |
| 1667 | if (channel->frag_sz == 0) |
| 1668 | goto pack; |
| 1669 | |
| 1670 | /* Declare a fragment done */ |
| 1671 | if (channel->filled_frags > 0) |
| 1672 | channel->filled_frags--; |
| 1673 | channel->bytes += channel->frag_sz; |
| 1674 | channel->nr_irqs++; |
| 1675 | |
| 1676 | /* Flip-flop between buffer I and II */ |
| 1677 | channel->next_buf ^= 1; |
| 1678 | |
| 1679 | /* Advance hardware pointer by fragment size and wrap around */ |
| 1680 | channel->hwptr += channel->frag_sz; |
| 1681 | channel->hwptr %= channel->buf_sz; |
| 1682 | |
| 1683 | /* Buffer I or buffer II BAR */ |
| 1684 | outl (channel->buf_handle + channel->hwptr, |
| 1685 | channel->next_buf == 0 ? |
| 1686 | channel->iobase + FORTE_PLY_BUF1 : |
| 1687 | channel->iobase + FORTE_PLY_BUF2); |
| 1688 | |
| 1689 | /* If the currently playing fragment is last, schedule pause */ |
| 1690 | if (channel->filled_frags == 1) |
| 1691 | forte_channel_pause (channel); |
| 1692 | |
| 1693 | pack: |
| 1694 | /* Acknowledge interrupt */ |
| 1695 | outw (FORTE_IRQ_PLAYBACK, chip->iobase + FORTE_IRQ_STATUS); |
| 1696 | |
| 1697 | if (waitqueue_active (&channel->wait)) |
| 1698 | wake_up_all (&channel->wait); |
| 1699 | |
| 1700 | spin_unlock (&chip->lock); |
| 1701 | } |
| 1702 | |
| 1703 | if (status & FORTE_IRQ_CAPTURE) { |
| 1704 | channel = &chip->rec; |
| 1705 | spin_lock (&chip->lock); |
| 1706 | |
| 1707 | /* One fragment filled */ |
| 1708 | channel->filled_frags++; |
| 1709 | |
| 1710 | /* Get # of completed bytes */ |
| 1711 | count = inw (channel->iobase + FORTE_PLY_COUNT) + 1; |
| 1712 | |
| 1713 | if (count == 0) { |
| 1714 | DPRINTK ("%s: last, filled_frags = %d\n", __FUNCTION__, |
| 1715 | channel->filled_frags); |
| 1716 | channel->filled_frags = 0; |
| 1717 | goto rack; |
| 1718 | } |
| 1719 | |
| 1720 | /* Buffer I or buffer II BAR */ |
| 1721 | outl (channel->buf_handle + channel->hwptr, |
| 1722 | channel->next_buf == 0 ? |
| 1723 | channel->iobase + FORTE_PLY_BUF1 : |
| 1724 | channel->iobase + FORTE_PLY_BUF2); |
| 1725 | |
| 1726 | /* Flip-flop between buffer I and II */ |
| 1727 | channel->next_buf ^= 1; |
| 1728 | |
| 1729 | /* Advance hardware pointer by fragment size and wrap around */ |
| 1730 | channel->hwptr += channel->frag_sz; |
| 1731 | channel->hwptr %= channel->buf_sz; |
| 1732 | |
| 1733 | /* Out of buffers */ |
| 1734 | if (channel->filled_frags == channel->frag_num - 1) |
| 1735 | forte_channel_stop (channel); |
| 1736 | rack: |
| 1737 | /* Acknowledge interrupt */ |
| 1738 | outw (FORTE_IRQ_CAPTURE, chip->iobase + FORTE_IRQ_STATUS); |
| 1739 | |
| 1740 | spin_unlock (&chip->lock); |
| 1741 | |
| 1742 | if (waitqueue_active (&channel->wait)) |
| 1743 | wake_up_all (&channel->wait); |
| 1744 | } |
| 1745 | |
| 1746 | return IRQ_HANDLED; |
| 1747 | } |
| 1748 | |
| 1749 | |
| 1750 | /** |
| 1751 | * forte_proc_read: |
| 1752 | */ |
| 1753 | |
| 1754 | static int |
| 1755 | forte_proc_read (char *page, char **start, off_t off, int count, |
| 1756 | int *eof, void *data) |
| 1757 | { |
| 1758 | int i = 0, p_rate, p_chan, r_rate; |
| 1759 | unsigned short p_reg, r_reg; |
| 1760 | |
| 1761 | i += sprintf (page, "ForteMedia FM801 OSS Lite driver\n%s\n \n", |
| 1762 | DRIVER_VERSION); |
| 1763 | |
| 1764 | if (!forte->iobase) |
| 1765 | return i; |
| 1766 | |
| 1767 | p_rate = p_chan = -1; |
| 1768 | p_reg = inw (forte->iobase + FORTE_PLY_CTRL); |
| 1769 | p_rate = (p_reg >> 8) & 15; |
| 1770 | p_chan = (p_reg >> 12) & 3; |
| 1771 | |
| 1772 | if (p_rate >= 0 || p_rate <= 10) |
| 1773 | p_rate = rates[p_rate]; |
| 1774 | |
| 1775 | if (p_chan >= 0 || p_chan <= 2) |
| 1776 | p_chan = channels[p_chan]; |
| 1777 | |
| 1778 | r_rate = -1; |
| 1779 | r_reg = inw (forte->iobase + FORTE_CAP_CTRL); |
| 1780 | r_rate = (r_reg >> 8) & 15; |
| 1781 | |
| 1782 | if (r_rate >= 0 || r_rate <= 10) |
| 1783 | r_rate = rates[r_rate]; |
| 1784 | |
| 1785 | i += sprintf (page + i, |
| 1786 | " Playback Capture\n" |
| 1787 | "FIFO empty : %-3s %-3s\n" |
| 1788 | "Buf1 Last : %-3s %-3s\n" |
| 1789 | "Buf2 Last : %-3s %-3s\n" |
| 1790 | "Started : %-3s %-3s\n" |
| 1791 | "Paused : %-3s %-3s\n" |
| 1792 | "Immed Stop : %-3s %-3s\n" |
| 1793 | "Rate : %-5d %-5d\n" |
| 1794 | "Channels : %-5d -\n" |
| 1795 | "16-bit : %-3s %-3s\n" |
| 1796 | "Stereo : %-3s %-3s\n" |
| 1797 | " \n" |
| 1798 | "Buffer Sz : %-6d %-6d\n" |
| 1799 | "Frag Sz : %-6d %-6d\n" |
| 1800 | "Frag Num : %-6d %-6d\n" |
| 1801 | "Frag msecs : %-6d %-6d\n" |
| 1802 | "Used Frags : %-6d %-6d\n" |
| 1803 | "Mapped : %-3s %-3s\n", |
| 1804 | p_reg & 1<<0 ? "yes" : "no", |
| 1805 | r_reg & 1<<0 ? "yes" : "no", |
| 1806 | p_reg & 1<<1 ? "yes" : "no", |
| 1807 | r_reg & 1<<1 ? "yes" : "no", |
| 1808 | p_reg & 1<<2 ? "yes" : "no", |
| 1809 | r_reg & 1<<2 ? "yes" : "no", |
| 1810 | p_reg & 1<<5 ? "yes" : "no", |
| 1811 | r_reg & 1<<5 ? "yes" : "no", |
| 1812 | p_reg & 1<<6 ? "yes" : "no", |
| 1813 | r_reg & 1<<6 ? "yes" : "no", |
| 1814 | p_reg & 1<<7 ? "yes" : "no", |
| 1815 | r_reg & 1<<7 ? "yes" : "no", |
| 1816 | p_rate, r_rate, |
| 1817 | p_chan, |
| 1818 | p_reg & 1<<14 ? "yes" : "no", |
| 1819 | r_reg & 1<<14 ? "yes" : "no", |
| 1820 | p_reg & 1<<15 ? "yes" : "no", |
| 1821 | r_reg & 1<<15 ? "yes" : "no", |
| 1822 | forte->play.buf_sz, forte->rec.buf_sz, |
| 1823 | forte->play.frag_sz, forte->rec.frag_sz, |
| 1824 | forte->play.frag_num, forte->rec.frag_num, |
| 1825 | forte->play.frag_msecs, forte->rec.frag_msecs, |
| 1826 | forte->play.filled_frags, forte->rec.filled_frags, |
| 1827 | forte->play.mapped ? "yes" : "no", |
| 1828 | forte->rec.mapped ? "yes" : "no" |
| 1829 | ); |
| 1830 | |
| 1831 | return i; |
| 1832 | } |
| 1833 | |
| 1834 | |
| 1835 | /** |
| 1836 | * forte_proc_init: |
| 1837 | * |
| 1838 | * Creates driver info entries in /proc |
| 1839 | */ |
| 1840 | |
| 1841 | static int __init |
| 1842 | forte_proc_init (void) |
| 1843 | { |
| 1844 | if (!proc_mkdir ("driver/forte", NULL)) |
| 1845 | return -EIO; |
| 1846 | |
| 1847 | if (!create_proc_read_entry ("driver/forte/chip", 0, NULL, forte_proc_read, forte)) { |
| 1848 | remove_proc_entry ("driver/forte", NULL); |
| 1849 | return -EIO; |
| 1850 | } |
| 1851 | |
| 1852 | if (!create_proc_read_entry("driver/forte/ac97", 0, NULL, ac97_read_proc, forte->ac97)) { |
| 1853 | remove_proc_entry ("driver/forte/chip", NULL); |
| 1854 | remove_proc_entry ("driver/forte", NULL); |
| 1855 | return -EIO; |
| 1856 | } |
| 1857 | |
| 1858 | return 0; |
| 1859 | } |
| 1860 | |
| 1861 | |
| 1862 | /** |
| 1863 | * forte_proc_remove: |
| 1864 | * |
| 1865 | * Removes driver info entries in /proc |
| 1866 | */ |
| 1867 | |
| 1868 | static void |
| 1869 | forte_proc_remove (void) |
| 1870 | { |
| 1871 | remove_proc_entry ("driver/forte/ac97", NULL); |
| 1872 | remove_proc_entry ("driver/forte/chip", NULL); |
| 1873 | remove_proc_entry ("driver/forte", NULL); |
| 1874 | } |
| 1875 | |
| 1876 | |
| 1877 | /** |
| 1878 | * forte_chip_init: |
| 1879 | * @chip: Chip instance to initialize |
| 1880 | * |
| 1881 | * Description: |
| 1882 | * Resets chip, configures codec and registers the driver with |
| 1883 | * the sound subsystem. |
| 1884 | * |
| 1885 | * Press and hold Start for 8 secs, then switch on Run |
| 1886 | * and hold for 4 seconds. Let go of Start. Numbers |
| 1887 | * assume a properly oiled TWG. |
| 1888 | */ |
| 1889 | |
| 1890 | static int __devinit |
| 1891 | forte_chip_init (struct forte_chip *chip) |
| 1892 | { |
| 1893 | u8 revision; |
| 1894 | u16 cmdw; |
| 1895 | struct ac97_codec *codec; |
| 1896 | |
| 1897 | pci_read_config_byte (chip->pci_dev, PCI_REVISION_ID, &revision); |
| 1898 | |
| 1899 | if (revision >= 0xB1) { |
| 1900 | chip->multichannel = 1; |
| 1901 | printk (KERN_INFO PFX "Multi-channel device detected.\n"); |
| 1902 | } |
| 1903 | |
| 1904 | /* Reset chip */ |
| 1905 | outw (FORTE_CC_CODEC_RESET | FORTE_CC_AC97_RESET, |
| 1906 | chip->iobase + FORTE_CODEC_CTRL); |
| 1907 | udelay(100); |
| 1908 | outw (0, chip->iobase + FORTE_CODEC_CTRL); |
| 1909 | |
| 1910 | /* Request read from AC97 */ |
| 1911 | outw (FORTE_AC97_READ | (0 << FORTE_AC97_ADDR_SHIFT), |
| 1912 | chip->iobase + FORTE_AC97_CMD); |
| 1913 | mdelay(750); |
| 1914 | |
| 1915 | if ((inw (chip->iobase + FORTE_AC97_CMD) & (3<<8)) != (1<<8)) { |
| 1916 | printk (KERN_INFO PFX "AC97 codec not responding"); |
| 1917 | return -EIO; |
| 1918 | } |
| 1919 | |
| 1920 | /* Init volume */ |
| 1921 | outw (0x0808, chip->iobase + FORTE_PCM_VOL); |
| 1922 | outw (0x9f1f, chip->iobase + FORTE_FM_VOL); |
| 1923 | outw (0x8808, chip->iobase + FORTE_I2S_VOL); |
| 1924 | |
| 1925 | /* I2S control - I2S mode */ |
| 1926 | outw (0x0003, chip->iobase + FORTE_I2S_MODE); |
| 1927 | |
| 1928 | /* Interrupt setup - unmask PLAYBACK & CAPTURE */ |
| 1929 | cmdw = inw (chip->iobase + FORTE_IRQ_MASK); |
| 1930 | cmdw &= ~0x0003; |
| 1931 | outw (cmdw, chip->iobase + FORTE_IRQ_MASK); |
| 1932 | |
| 1933 | /* Interrupt clear */ |
| 1934 | outw (FORTE_IRQ_PLAYBACK|FORTE_IRQ_CAPTURE, |
| 1935 | chip->iobase + FORTE_IRQ_STATUS); |
| 1936 | |
| 1937 | /* Set up the AC97 codec */ |
| 1938 | if ((codec = ac97_alloc_codec()) == NULL) |
| 1939 | return -ENOMEM; |
| 1940 | codec->private_data = chip; |
| 1941 | codec->codec_read = forte_ac97_read; |
| 1942 | codec->codec_write = forte_ac97_write; |
| 1943 | codec->id = 0; |
| 1944 | |
| 1945 | if (ac97_probe_codec (codec) == 0) { |
| 1946 | printk (KERN_ERR PFX "codec probe failed\n"); |
| 1947 | ac97_release_codec(codec); |
| 1948 | return -1; |
| 1949 | } |
| 1950 | |
| 1951 | /* Register mixer */ |
| 1952 | if ((codec->dev_mixer = |
| 1953 | register_sound_mixer (&forte_mixer_fops, -1)) < 0) { |
| 1954 | printk (KERN_ERR PFX "couldn't register mixer!\n"); |
| 1955 | ac97_release_codec(codec); |
| 1956 | return -1; |
| 1957 | } |
| 1958 | |
| 1959 | chip->ac97 = codec; |
| 1960 | |
| 1961 | /* Register DSP */ |
| 1962 | if ((chip->dsp = register_sound_dsp (&forte_dsp_fops, -1) ) < 0) { |
| 1963 | printk (KERN_ERR PFX "couldn't register dsp!\n"); |
| 1964 | return -1; |
| 1965 | } |
| 1966 | |
| 1967 | /* Register with /proc */ |
| 1968 | if (forte_proc_init()) { |
| 1969 | printk (KERN_ERR PFX "couldn't add entries to /proc!\n"); |
| 1970 | return -1; |
| 1971 | } |
| 1972 | |
| 1973 | return 0; |
| 1974 | } |
| 1975 | |
| 1976 | |
| 1977 | /** |
| 1978 | * forte_probe: |
| 1979 | * @pci_dev: PCI struct for probed device |
| 1980 | * @pci_id: |
| 1981 | * |
| 1982 | * Description: |
| 1983 | * Allocates chip instance, I/O region, and IRQ |
| 1984 | */ |
| 1985 | static int __init |
| 1986 | forte_probe (struct pci_dev *pci_dev, const struct pci_device_id *pci_id) |
| 1987 | { |
| 1988 | struct forte_chip *chip; |
| 1989 | int ret = 0; |
| 1990 | |
| 1991 | /* FIXME: Support more than one chip */ |
| 1992 | if (found++) |
| 1993 | return -EIO; |
| 1994 | |
| 1995 | /* Ignition */ |
| 1996 | if (pci_enable_device (pci_dev)) |
| 1997 | return -EIO; |
| 1998 | |
| 1999 | pci_set_master (pci_dev); |
| 2000 | |
| 2001 | /* Allocate chip instance and configure */ |
| 2002 | forte = (struct forte_chip *) |
| 2003 | kmalloc (sizeof (struct forte_chip), GFP_KERNEL); |
| 2004 | chip = forte; |
| 2005 | |
| 2006 | if (chip == NULL) { |
| 2007 | printk (KERN_WARNING PFX "Out of memory"); |
| 2008 | return -ENOMEM; |
| 2009 | } |
| 2010 | |
| 2011 | memset (chip, 0, sizeof (struct forte_chip)); |
| 2012 | chip->pci_dev = pci_dev; |
| 2013 | |
| 2014 | init_MUTEX(&chip->open_sem); |
| 2015 | spin_lock_init (&chip->lock); |
| 2016 | spin_lock_init (&chip->ac97_lock); |
| 2017 | |
| 2018 | if (! request_region (pci_resource_start (pci_dev, 0), |
| 2019 | pci_resource_len (pci_dev, 0), DRIVER_NAME)) { |
| 2020 | printk (KERN_WARNING PFX "Unable to reserve I/O space"); |
| 2021 | ret = -ENOMEM; |
| 2022 | goto error; |
| 2023 | } |
| 2024 | |
| 2025 | chip->iobase = pci_resource_start (pci_dev, 0); |
| 2026 | chip->irq = pci_dev->irq; |
| 2027 | |
| 2028 | if (request_irq (chip->irq, forte_interrupt, SA_SHIRQ, DRIVER_NAME, |
| 2029 | chip)) { |
| 2030 | printk (KERN_WARNING PFX "Unable to reserve IRQ"); |
| 2031 | ret = -EIO; |
| 2032 | goto error; |
| 2033 | } |
| 2034 | |
| 2035 | pci_set_drvdata (pci_dev, chip); |
| 2036 | |
| 2037 | printk (KERN_INFO PFX "FM801 chip found at 0x%04lX-0x%04lX IRQ %u\n", |
| 2038 | chip->iobase, pci_resource_end (pci_dev, 0), chip->irq); |
| 2039 | |
| 2040 | /* Power it up */ |
| 2041 | if ((ret = forte_chip_init (chip)) == 0) |
| 2042 | return 0; |
| 2043 | |
| 2044 | error: |
| 2045 | if (chip->irq) |
| 2046 | free_irq (chip->irq, chip); |
| 2047 | |
| 2048 | if (chip->iobase) |
| 2049 | release_region (pci_resource_start (pci_dev, 0), |
| 2050 | pci_resource_len (pci_dev, 0)); |
| 2051 | |
| 2052 | kfree (chip); |
| 2053 | |
| 2054 | return ret; |
| 2055 | } |
| 2056 | |
| 2057 | |
| 2058 | /** |
| 2059 | * forte_remove: |
| 2060 | * @pci_dev: PCI device to unclaim |
| 2061 | * |
| 2062 | */ |
| 2063 | |
| 2064 | static void |
| 2065 | forte_remove (struct pci_dev *pci_dev) |
| 2066 | { |
| 2067 | struct forte_chip *chip = pci_get_drvdata (pci_dev); |
| 2068 | |
| 2069 | if (chip == NULL) |
| 2070 | return; |
| 2071 | |
| 2072 | /* Turn volume down to avoid popping */ |
| 2073 | outw (0x1f1f, chip->iobase + FORTE_PCM_VOL); |
| 2074 | outw (0x1f1f, chip->iobase + FORTE_FM_VOL); |
| 2075 | outw (0x1f1f, chip->iobase + FORTE_I2S_VOL); |
| 2076 | |
| 2077 | forte_proc_remove(); |
| 2078 | free_irq (chip->irq, chip); |
| 2079 | release_region (chip->iobase, pci_resource_len (pci_dev, 0)); |
| 2080 | |
| 2081 | unregister_sound_dsp (chip->dsp); |
| 2082 | unregister_sound_mixer (chip->ac97->dev_mixer); |
| 2083 | ac97_release_codec(chip->ac97); |
| 2084 | kfree (chip); |
| 2085 | |
| 2086 | printk (KERN_INFO PFX "driver released\n"); |
| 2087 | } |
| 2088 | |
| 2089 | |
| 2090 | static struct pci_device_id forte_pci_ids[] = { |
| 2091 | { 0x1319, 0x0801, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, |
| 2092 | { 0, } |
| 2093 | }; |
| 2094 | |
| 2095 | |
| 2096 | static struct pci_driver forte_pci_driver = { |
| 2097 | .name = DRIVER_NAME, |
| 2098 | .id_table = forte_pci_ids, |
| 2099 | .probe = forte_probe, |
| 2100 | .remove = forte_remove, |
| 2101 | |
| 2102 | }; |
| 2103 | |
| 2104 | |
| 2105 | /** |
| 2106 | * forte_init_module: |
| 2107 | * |
| 2108 | */ |
| 2109 | |
| 2110 | static int __init |
| 2111 | forte_init_module (void) |
| 2112 | { |
| 2113 | printk (KERN_INFO PFX DRIVER_VERSION "\n"); |
| 2114 | |
| 2115 | return pci_register_driver (&forte_pci_driver); |
| 2116 | } |
| 2117 | |
| 2118 | |
| 2119 | /** |
| 2120 | * forte_cleanup_module: |
| 2121 | * |
| 2122 | */ |
| 2123 | |
| 2124 | static void __exit |
| 2125 | forte_cleanup_module (void) |
| 2126 | { |
| 2127 | pci_unregister_driver (&forte_pci_driver); |
| 2128 | } |
| 2129 | |
| 2130 | |
| 2131 | module_init(forte_init_module); |
| 2132 | module_exit(forte_cleanup_module); |
| 2133 | |
| 2134 | MODULE_AUTHOR("Martin K. Petersen <mkp@mkp.net>"); |
| 2135 | MODULE_DESCRIPTION("ForteMedia FM801 OSS Driver"); |
| 2136 | MODULE_LICENSE("GPL"); |
| 2137 | MODULE_DEVICE_TABLE (pci, forte_pci_ids); |