sound/oss/ali5455.c

   1 /*
   2  *      ALI  ali5455 and friends ICH driver for Linux
   3  *      LEI HU <Lei_Hu@ali.com.tw>
   4  *
   5  *  Built from:
   6  *      drivers/sound/i810_audio
   7  *
   8  *      The ALi 5455 is similar but not quite identical to the Intel ICH
   9  *      series of controllers. Its easier to keep the driver separated from
  10  *      the i810 driver.
  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., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  *
  26  *
  27  *      ALi 5455 theory of operation
  28  *
  29  *      The chipset provides three DMA channels that talk to an AC97
  30  *      CODEC (AC97 is a digital/analog mixer standard). At its simplest
  31  *      you get 48Khz audio with basic volume and mixer controls. At the
  32  *      best you get rate adaption in the codec. We set the card up so
  33  *      that we never take completion interrupts but instead keep the card
  34  *      chasing its tail around a ring buffer. This is needed for mmap
  35  *      mode audio and happens to work rather well for non-mmap modes too.
  36  *
  37  *      The board has one output channel for PCM audio (supported) and
  38  *      a stereo line in and mono microphone input. Again these are normally
  39  *      locked to 48Khz only. Right now recording is not finished.
  40  *
  41  *      There is no midi support, no synth support. Use timidity. To get
  42  *      esd working you need to use esd -r 48000 as it won't probe 48KHz
  43  *      by default. mpg123 can't handle 48Khz only audio so use xmms.
  44  *
  45  *      If you need to force a specific rate set the clocking= option
  46  *
  47  */
  48
  49 #include <linux/module.h>
  50 #include <linux/string.h>
  51 #include <linux/ctype.h>
  52 #include <linux/ioport.h>
  53 #include <linux/sched.h>
  54 #include <linux/delay.h>
  55 #include <linux/sound.h>
  56 #include <linux/slab.h>
  57 #include <linux/soundcard.h>
  58 #include <linux/pci.h>
  59 #include <asm/io.h>
  60 #include <asm/dma.h>
  61 #include <linux/init.h>
  62 #include <linux/poll.h>
  63 #include <linux/spinlock.h>
  64 #include <linux/smp_lock.h>
  65 #include <linux/ac97_codec.h>
  66 #include <linux/interrupt.h>
  67 #include <asm/uaccess.h>
  68 #include <asm/hardirq.h>
  69
  70 #ifndef PCI_DEVICE_ID_ALI_5455
  71 #define PCI_DEVICE_ID_ALI_5455  0x5455
  72 #endif
  73
  74 #ifndef PCI_VENDOR_ID_ALI
  75 #define PCI_VENDOR_ID_ALI       0x10b9
  76 #endif
  77
  78 static int strict_clocking = 0;
  79 static unsigned int clocking = 0;
  80 static unsigned int codec_pcmout_share_spdif_locked = 0;
  81 static unsigned int codec_independent_spdif_locked = 0;
  82 static unsigned int controller_pcmout_share_spdif_locked = 0;
  83 static unsigned int controller_independent_spdif_locked = 0;
  84 static unsigned int globel = 0;
  85
  86 #define ADC_RUNNING     1
  87 #define DAC_RUNNING     2
  88 #define CODEC_SPDIFOUT_RUNNING 8
  89 #define CONTROLLER_SPDIFOUT_RUNNING 4
  90
  91 #define SPDIF_ENABLE_OUTPUT     4       /* bits 0,1 are PCM */
  92
  93 #define ALI5455_FMT_16BIT       1
  94 #define ALI5455_FMT_STEREO      2
  95 #define ALI5455_FMT_MASK        3
  96
  97 #define SPDIF_ON        0x0004
  98 #define SURR_ON         0x0010
  99 #define CENTER_LFE_ON   0x0020
 100 #define VOL_MUTED       0x8000
 101
 102
 103 #define ALI_SPDIF_OUT_CH_STATUS 0xbf
 104 /* the 810's array of pointers to data buffers */
 105
 106 struct sg_item {
 107 #define BUSADDR_MASK    0xFFFFFFFE
 108         u32 busaddr;
 109 #define CON_IOC         0x80000000      /* interrupt on completion */
 110 #define CON_BUFPAD      0x40000000      /* pad underrun with last sample, else 0 */
 111 #define CON_BUFLEN_MASK 0x0000ffff      /* buffer length in samples */
 112         u32 control;
 113 };
 114
 115 /* an instance of the ali channel */
 116 #define SG_LEN 32
 117 struct ali_channel {
 118         /* these sg guys should probably be allocated
 119            separately as nocache. Must be 8 byte aligned */
 120         struct sg_item sg[SG_LEN];      /* 32*8 */
 121         u32 offset;             /* 4 */
 122         u32 port;               /* 4 */
 123         u32 used;
 124         u32 num;
 125 };
 126
 127 /*
 128  * we have 3 separate dma engines.  pcm in, pcm out, and mic.
 129  * each dma engine has controlling registers.  These goofy
 130  * names are from the datasheet, but make it easy to write
 131  * code while leafing through it.
 132  */
 133
 134 #define ENUM_ENGINE(PRE,DIG)                                                                    \
 135 enum {                                                                                          \
 136         PRE##_BDBAR =   0x##DIG##0,             /* Buffer Descriptor list Base Address */       \
 137         PRE##_CIV =     0x##DIG##4,             /* Current Index Value */                       \
 138         PRE##_LVI =     0x##DIG##5,             /* Last Valid Index */                          \
 139         PRE##_SR =      0x##DIG##6,             /* Status Register */                           \
 140         PRE##_PICB =    0x##DIG##8,             /* Position In Current Buffer */                \
 141         PRE##_CR =      0x##DIG##b              /* Control Register */                          \
 142 }
 143
 144 ENUM_ENGINE(OFF, 0);            /* Offsets */
 145 ENUM_ENGINE(PI, 4);             /* PCM In */
 146 ENUM_ENGINE(PO, 5);             /* PCM Out */
 147 ENUM_ENGINE(MC, 6);             /* Mic In */
 148 ENUM_ENGINE(CODECSPDIFOUT, 7);  /* CODEC SPDIF OUT  */
 149 ENUM_ENGINE(CONTROLLERSPDIFIN, A);      /* CONTROLLER SPDIF In */
 150 ENUM_ENGINE(CONTROLLERSPDIFOUT, B);     /* CONTROLLER SPDIF OUT */
 151
 152
 153 enum {
 154         ALI_SCR = 0x00,         /* System Control Register */
 155         ALI_SSR = 0x04,         /* System Status Register  */
 156         ALI_DMACR = 0x08,       /* DMA Control Register    */
 157         ALI_FIFOCR1 = 0x0c,     /* FIFO Control Register 1  */
 158         ALI_INTERFACECR = 0x10, /* Interface Control Register */
 159         ALI_INTERRUPTCR = 0x14, /* Interrupt control Register */
 160         ALI_INTERRUPTSR = 0x18, /* Interrupt  Status Register */
 161         ALI_FIFOCR2 = 0x1c,     /* FIFO Control Register 2   */
 162         ALI_CPR = 0x20,         /* Command Port Register     */
 163         ALI_SPR = 0x24,         /* Status Port Register      */
 164         ALI_FIFOCR3 = 0x2c,     /* FIFO Control Register 3  */
 165         ALI_TTSR = 0x30,        /* Transmit Tag Slot Register */
 166         ALI_RTSR = 0x34,        /* Receive Tag Slot  Register */
 167         ALI_CSPSR = 0x38,       /* Command/Status Port Status Register */
 168         ALI_CAS = 0x3c,         /* Codec Write Semaphore Register */
 169         ALI_SPDIFCSR = 0xf8,    /* spdif channel status register  */
 170         ALI_SPDIFICS = 0xfc     /* spdif interface control/status  */
 171 };
 172
 173 // x-status register(x:pcm in ,pcm out, mic in,)
 174 /* interrupts for a dma engine */
 175 #define DMA_INT_FIFO            (1<<4)  /* fifo under/over flow */
 176 #define DMA_INT_COMPLETE        (1<<3)  /* buffer read/write complete and ioc set */
 177 #define DMA_INT_LVI             (1<<2)  /* last valid done */
 178 #define DMA_INT_CELV            (1<<1)  /* last valid is current */
 179 #define DMA_INT_DCH             (1)     /* DMA Controller Halted (happens on LVI interrupts) */ //not eqult intel
 180 #define DMA_INT_MASK (DMA_INT_FIFO|DMA_INT_COMPLETE|DMA_INT_LVI)
 181
 182 /* interrupts for the whole chip */// by interrupt status register finish
 183
 184 #define INT_SPDIFOUT   (1<<23)  /* controller spdif out INTERRUPT */
 185 #define INT_SPDIFIN   (1<<22)
 186 #define INT_CODECSPDIFOUT   (1<<19)
 187 #define INT_MICIN   (1<<18)
 188 #define INT_PCMOUT   (1<<17)
 189 #define INT_PCMIN   (1<<16)
 190 #define INT_CPRAIS   (1<<7)
 191 #define INT_SPRAIS   (1<<5)
 192 #define INT_GPIO    (1<<1)
 193 #define INT_MASK   (INT_SPDIFOUT|INT_CODECSPDIFOUT|INT_MICIN|INT_PCMOUT|INT_PCMIN)
 194
 195 #define DRIVER_VERSION "0.02ac"
 196
 197 /* magic numbers to protect our data structures */
 198 #define ALI5455_CARD_MAGIC              0x5072696E      /* "Prin" */
 199 #define ALI5455_STATE_MAGIC             0x63657373      /* "cess" */
 200 #define ALI5455_DMA_MASK                0xffffffff      /* DMA buffer mask for pci_alloc_consist */
 201 #define NR_HW_CH                        5       //I think 5 channel
 202
 203 /* maxinum number of AC97 codecs connected, AC97 2.0 defined 4 */
 204 #define NR_AC97         2
 205
 206 /* Please note that an 8bit mono stream is not valid on this card, you must have a 16bit */
 207 /* stream at a minimum for this card to be happy */
 208 static const unsigned sample_size[] = { 1, 2, 2, 4 };
 209 /* Samples are 16bit values, so we are shifting to a word, not to a byte, hence shift */
 210 /* values are one less than might be expected */
 211 static const unsigned sample_shift[] = { -1, 0, 0, 1 };
 212
 213 #define ALI5455
 214 static char *card_names[] = {
 215         "ALI 5455"
 216 };
 217
 218 static struct pci_device_id ali_pci_tbl[] = {
 219         {PCI_VENDOR_ID_ALI, PCI_DEVICE_ID_ALI_5455,
 220          PCI_ANY_ID, PCI_ANY_ID, 0, 0, ALI5455},
 221         {0,}
 222 };
 223
 224 MODULE_DEVICE_TABLE(pci, ali_pci_tbl);
 225
 226 #ifdef CONFIG_PM
 227 #define PM_SUSPENDED(card) (card->pm_suspended)
 228 #else
 229 #define PM_SUSPENDED(card) (0)
 230 #endif
 231
 232 /* "software" or virtual channel, an instance of opened /dev/dsp */
 233 struct ali_state {
 234         unsigned int magic;
 235         struct ali_card *card;  /* Card info */
 236
 237         /* single open lock mechanism, only used for recording */
 238         struct semaphore open_sem;
 239         wait_queue_head_t open_wait;
 240
 241         /* file mode */
 242         mode_t open_mode;
 243
 244         /* virtual channel number */
 245         int virt;
 246
 247 #ifdef CONFIG_PM
 248         unsigned int pm_saved_dac_rate, pm_saved_adc_rate;
 249 #endif
 250         struct dmabuf {
 251                 /* wave sample stuff */
 252                 unsigned int rate;
 253                 unsigned char fmt, enable, trigger;
 254
 255                 /* hardware channel */
 256                 struct ali_channel *read_channel;
 257                 struct ali_channel *write_channel;
 258                 struct ali_channel *codec_spdifout_channel;
 259                 struct ali_channel *controller_spdifout_channel;
 260
 261                 /* OSS buffer management stuff */
 262                 void *rawbuf;
 263                 dma_addr_t dma_handle;
 264                 unsigned buforder;
 265                 unsigned numfrag;
 266                 unsigned fragshift;
 267
 268                 /* our buffer acts like a circular ring */
 269                 unsigned hwptr; /* where dma last started, updated by update_ptr */
 270                 unsigned swptr; /* where driver last clear/filled, updated by read/write */
 271                 int count;      /* bytes to be consumed or been generated by dma machine */
 272                 unsigned total_bytes;   /* total bytes dmaed by hardware */
 273
 274                 unsigned error; /* number of over/underruns */
 275                 wait_queue_head_t wait; /* put process on wait queue when no more space in buffer */
 276
 277                 /* redundant, but makes calculations easier */
 278                 /* what the hardware uses */
 279                 unsigned dmasize;
 280                 unsigned fragsize;
 281                 unsigned fragsamples;
 282
 283                 /* what we tell the user to expect */
 284                 unsigned userfrags;
 285                 unsigned userfragsize;
 286
 287                 /* OSS stuff */
 288                 unsigned mapped:1;
 289                 unsigned ready:1;
 290                 unsigned update_flag;
 291                 unsigned ossfragsize;
 292                 unsigned ossmaxfrags;
 293                 unsigned subdivision;
 294         } dmabuf;
 295 };
 296
 297
 298 struct ali_card {
 299         struct ali_channel channel[5];
 300         unsigned int magic;
 301
 302         /* We keep ali5455 cards in a linked list */
 303         struct ali_card *next;
 304
 305         /* The ali has a certain amount of cross channel interaction
 306            so we use a single per card lock */
 307         spinlock_t lock;
 308         spinlock_t ac97_lock;
 309
 310         /* PCI device stuff */
 311         struct pci_dev *pci_dev;
 312         u16 pci_id;
 313 #ifdef CONFIG_PM
 314         u16 pm_suspended;
 315         u32 pm_save_state[64 / sizeof(u32)];
 316         int pm_saved_mixer_settings[SOUND_MIXER_NRDEVICES][NR_AC97];
 317 #endif
 318         /* soundcore stuff */
 319         int dev_audio;
 320
 321         /* structures for abstraction of hardware facilities, codecs, banks and channels */
 322         struct ac97_codec *ac97_codec[NR_AC97];
 323         struct ali_state *states[NR_HW_CH];
 324
 325         u16 ac97_features;
 326         u16 ac97_status;
 327         u16 channels;
 328
 329         /* hardware resources */
 330         unsigned long iobase;
 331
 332         u32 irq;
 333
 334         /* Function support */
 335         struct ali_channel *(*alloc_pcm_channel) (struct ali_card *);
 336         struct ali_channel *(*alloc_rec_pcm_channel) (struct ali_card *);
 337         struct ali_channel *(*alloc_rec_mic_channel) (struct ali_card *);
 338         struct ali_channel *(*alloc_codec_spdifout_channel) (struct ali_card *);
 339         struct ali_channel *(*alloc_controller_spdifout_channel) (struct  ali_card *);
 340         void (*free_pcm_channel) (struct ali_card *, int chan);
 341
 342         /* We have a *very* long init time possibly, so use this to block */
 343         /* attempts to open our devices before we are ready (stops oops'es) */
 344         int initializing;
 345 };
 346
 347
 348 static struct ali_card *devs = NULL;
 349
 350 static int ali_open_mixdev(struct inode *inode, struct file *file);
 351 static int ali_ioctl_mixdev(struct inode *inode, struct file *file,
 352                             unsigned int cmd, unsigned long arg);
 353 static u16 ali_ac97_get(struct ac97_codec *dev, u8 reg);
 354 static void ali_ac97_set(struct ac97_codec *dev, u8 reg, u16 data);
 355
 356 static struct ali_channel *ali_alloc_pcm_channel(struct ali_card *card)
 357 {
 358         if (card->channel[1].used == 1)
 359                 return NULL;
 360         card->channel[1].used = 1;
 361         return &card->channel[1];
 362 }
 363
 364 static struct ali_channel *ali_alloc_rec_pcm_channel(struct ali_card *card)
 365 {
 366         if (card->channel[0].used == 1)
 367                 return NULL;
 368         card->channel[0].used = 1;
 369         return &card->channel[0];
 370 }
 371
 372 static struct ali_channel *ali_alloc_rec_mic_channel(struct ali_card *card)
 373 {
 374         if (card->channel[2].used == 1)
 375                 return NULL;
 376         card->channel[2].used = 1;
 377         return &card->channel[2];
 378 }
 379
 380 static struct ali_channel *ali_alloc_codec_spdifout_channel(struct ali_card *card)
 381 {
 382         if (card->channel[3].used == 1)
 383                 return NULL;
 384         card->channel[3].used = 1;
 385         return &card->channel[3];
 386 }
 387
 388 static struct ali_channel *ali_alloc_controller_spdifout_channel(struct ali_card *card)
 389 {
 390         if (card->channel[4].used == 1)
 391                 return NULL;
 392         card->channel[4].used = 1;
 393         return &card->channel[4];
 394 }
 395 static void ali_free_pcm_channel(struct ali_card *card, int channel)
 396 {
 397         card->channel[channel].used = 0;
 398 }
 399
 400
 401 //add support  codec spdif out
 402 static int ali_valid_spdif_rate(struct ac97_codec *codec, int rate)
 403 {
 404         unsigned long id = 0L;
 405
 406         id = (ali_ac97_get(codec, AC97_VENDOR_ID1) << 16);
 407         id |= ali_ac97_get(codec, AC97_VENDOR_ID2) & 0xffff;
 408         switch (id) {
 409         case 0x41445361:        /* AD1886 */
 410                 if (rate == 48000) {
 411                         return 1;
 412                 }
 413                 break;
 414         case 0x414c4720:        /* ALC650 */
 415                 if (rate == 48000) {
 416                         return 1;
 417                 }
 418                 break;
 419         default:                /* all other codecs, until we know otherwiae */
 420                 if (rate == 48000 || rate == 44100 || rate == 32000) {
 421                         return 1;
 422                 }
 423                 break;
 424         }
 425         return (0);
 426 }
 427
 428 /* ali_set_spdif_output
 429  *
 430  *  Configure the S/PDIF output transmitter. When we turn on
 431  *  S/PDIF, we turn off the analog output. This may not be
 432  *  the right thing to do.
 433  *
 434  *  Assumptions:
 435  *     The DSP sample rate must already be set to a supported
 436  *     S/PDIF rate (32kHz, 44.1kHz, or 48kHz) or we abort.
 437  */
 438 static void ali_set_spdif_output(struct ali_state *state, int slots,
 439                                  int rate)
 440 {
 441         int vol;
 442         int aud_reg;
 443         struct ac97_codec *codec = state->card->ac97_codec[0];
 444
 445         if (!(state->card->ac97_features & 4)) {
 446                 state->card->ac97_status &= ~SPDIF_ON;
 447         } else {
 448                 if (slots == -1) {      /* Turn off S/PDIF */
 449                         aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS);
 450                         ali_ac97_set(codec, AC97_EXTENDED_STATUS, (aud_reg & ~AC97_EA_SPDIF));
 451
 452                         /* If the volume wasn't muted before we turned on S/PDIF, unmute it */
 453                         if (!(state->card->ac97_status & VOL_MUTED)) {
 454                                 aud_reg = ali_ac97_get(codec, AC97_MASTER_VOL_STEREO);
 455                                 ali_ac97_set(codec, AC97_MASTER_VOL_STEREO,
 456                                              (aud_reg & ~VOL_MUTED));
 457                         }
 458                         state->card->ac97_status &= ~(VOL_MUTED | SPDIF_ON);
 459                         return;
 460                 }
 461
 462                 vol = ali_ac97_get(codec, AC97_MASTER_VOL_STEREO);
 463                 state->card->ac97_status = vol & VOL_MUTED;
 464
 465                 /* Set S/PDIF transmitter sample rate */
 466                 aud_reg = ali_ac97_get(codec, AC97_SPDIF_CONTROL);
 467                 switch (rate) {
 468                 case 32000:
 469                         aud_reg = (aud_reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_32K;
 470                         break;
 471                 case 44100:
 472                         aud_reg = (aud_reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_44K;
 473                         break;
 474                 case 48000:
 475                         aud_reg = (aud_reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_48K;
 476                         break;
 477                 default:
 478                         /* turn off S/PDIF */
 479                         aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS);
 480                         ali_ac97_set(codec, AC97_EXTENDED_STATUS, (aud_reg & ~AC97_EA_SPDIF));
 481                         state->card->ac97_status &= ~SPDIF_ON;
 482                         return;
 483                 }
 484
 485                 ali_ac97_set(codec, AC97_SPDIF_CONTROL, aud_reg);
 486
 487                 aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS);
 488                 aud_reg = (aud_reg & AC97_EA_SLOT_MASK) | slots | AC97_EA_SPDIF;
 489                 ali_ac97_set(codec, AC97_EXTENDED_STATUS, aud_reg);
 490
 491                 aud_reg = ali_ac97_get(codec, AC97_POWER_CONTROL);
 492                 aud_reg |= 0x0002;
 493                 ali_ac97_set(codec, AC97_POWER_CONTROL, aud_reg);
 494                 udelay(1);
 495
 496                 state->card->ac97_status |= SPDIF_ON;
 497
 498                 /* Check to make sure the configuration is valid */
 499                 aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS);
 500                 if (!(aud_reg & 0x0400)) {
 501                         /* turn off S/PDIF */
 502                         ali_ac97_set(codec, AC97_EXTENDED_STATUS, (aud_reg & ~AC97_EA_SPDIF));
 503                         state->card->ac97_status &= ~SPDIF_ON;
 504                         return;
 505                 }
 506                 if (codec_independent_spdif_locked > 0) {
 507                         aud_reg = ali_ac97_get(codec, 0x6a);
 508                         ali_ac97_set(codec, 0x6a, (aud_reg & 0xefff));
 509                 }
 510                 /* Mute the analog output */
 511                 /* Should this only mute the PCM volume??? */
 512         }
 513 }
 514
 515 /* ali_set_dac_channels
 516  *
 517  *  Configure the codec's multi-channel DACs
 518  *
 519  *  The logic is backwards. Setting the bit to 1 turns off the DAC.
 520  *
 521  *  What about the ICH? We currently configure it using the
 522  *  SNDCTL_DSP_CHANNELS ioctl.  If we're turnning on the DAC,
 523  *  does that imply that we want the ICH set to support
 524  *  these channels?
 525  *
 526  *  TODO:
 527  *    vailidate that the codec really supports these DACs
 528  *    before turning them on.
 529  */
 530 static void ali_set_dac_channels(struct ali_state *state, int channel)
 531 {
 532         int aud_reg;
 533         struct ac97_codec *codec = state->card->ac97_codec[0];
 534
 535         aud_reg = ali_ac97_get(codec, AC97_EXTENDED_STATUS);
 536         aud_reg |= AC97_EA_PRI | AC97_EA_PRJ | AC97_EA_PRK;
 537         state->card->ac97_status &= ~(SURR_ON | CENTER_LFE_ON);
 538
 539         switch (channel) {
 540         case 2:         /* always enabled */
 541                 break;
 542         case 4:
 543                 aud_reg &= ~AC97_EA_PRJ;
 544                 state->card->ac97_status |= SURR_ON;
 545                 break;
 546         case 6:
 547                 aud_reg &= ~(AC97_EA_PRJ | AC97_EA_PRI | AC97_EA_PRK);
 548                 state->card->ac97_status |= SURR_ON | CENTER_LFE_ON;
 549                 break;
 550         default:
 551                 break;
 552         }
 553         ali_ac97_set(codec, AC97_EXTENDED_STATUS, aud_reg);
 554
 555 }
 556
 557 /* set playback sample rate */
 558 static unsigned int ali_set_dac_rate(struct ali_state *state,
 559                                      unsigned int rate)
 560 {
 561         struct dmabuf *dmabuf = &state->dmabuf;
 562         u32 new_rate;
 563         struct ac97_codec *codec = state->card->ac97_codec[0];
 564
 565         if (!(state->card->ac97_features & 0x0001)) {
 566                 dmabuf->rate = clocking;
 567                 return clocking;
 568         }
 569
 570         if (rate > 48000)
 571                 rate = 48000;
 572         if (rate < 8000)
 573                 rate = 8000;
 574         dmabuf->rate = rate;
 575
 576         /*
 577          *      Adjust for misclocked crap
 578          */
 579
 580         rate = (rate * clocking) / 48000;
 581
 582         if (strict_clocking && rate < 8000) {
 583                 rate = 8000;
 584                 dmabuf->rate = (rate * 48000) / clocking;
 585         }
 586
 587         new_rate = ac97_set_dac_rate(codec, rate);
 588         if (new_rate != rate) {
 589                 dmabuf->rate = (new_rate * 48000) / clocking;
 590         }
 591         rate = new_rate;
 592         return dmabuf->rate;
 593 }
 594
 595 /* set recording sample rate */
 596 static unsigned int ali_set_adc_rate(struct ali_state *state,
 597                                      unsigned int rate)
 598 {
 599         struct dmabuf *dmabuf = &state->dmabuf;
 600         u32 new_rate;
 601         struct ac97_codec *codec = state->card->ac97_codec[0];
 602
 603         if (!(state->card->ac97_features & 0x0001)) {
 604                 dmabuf->rate = clocking;
 605                 return clocking;
 606         }
 607
 608         if (rate > 48000)
 609                 rate = 48000;
 610         if (rate < 8000)
 611                 rate = 8000;
 612         dmabuf->rate = rate;
 613
 614         /*
 615          *      Adjust for misclocked crap
 616          */
 617
 618         rate = (rate * clocking) / 48000;
 619         if (strict_clocking && rate < 8000) {
 620                 rate = 8000;
 621                 dmabuf->rate = (rate * 48000) / clocking;
 622         }
 623
 624         new_rate = ac97_set_adc_rate(codec, rate);
 625
 626         if (new_rate != rate) {
 627                 dmabuf->rate = (new_rate * 48000) / clocking;
 628                 rate = new_rate;
 629         }
 630         return dmabuf->rate;
 631 }
 632
 633 /* set codec independent spdifout sample rate */
 634 static unsigned int ali_set_codecspdifout_rate(struct ali_state *state,
 635                                                unsigned int rate)
 636 {
 637         struct dmabuf *dmabuf = &state->dmabuf;
 638
 639         if (!(state->card->ac97_features & 0x0001)) {
 640                 dmabuf->rate = clocking;
 641                 return clocking;
 642         }
 643
 644         if (rate > 48000)
 645                 rate = 48000;
 646         if (rate < 8000)
 647                 rate = 8000;
 648         dmabuf->rate = rate;
 649
 650         return dmabuf->rate;
 651 }
 652
 653 /* set  controller independent spdif out function sample rate */
 654 static void ali_set_spdifout_rate(struct ali_state *state,
 655                                   unsigned int rate)
 656 {
 657         unsigned char ch_st_sel;
 658         unsigned short status_rate;
 659
 660         switch (rate) {
 661         case 44100:
 662                 status_rate = 0;
 663                 break;
 664         case 32000:
 665                 status_rate = 0x300;
 666                 break;
 667         case 48000:
 668         default:
 669                 status_rate = 0x200;
 670                 break;
 671         }
 672
 673         ch_st_sel = inb(state->card->iobase + ALI_SPDIFICS) & ALI_SPDIF_OUT_CH_STATUS;  //select spdif_out
 674
 675         ch_st_sel |= 0x80;      //select right
 676         outb(ch_st_sel, (state->card->iobase + ALI_SPDIFICS));
 677         outb(status_rate | 0x20, (state->card->iobase + ALI_SPDIFCSR + 2));
 678
 679         ch_st_sel &= (~0x80);   //select left
 680         outb(ch_st_sel, (state->card->iobase + ALI_SPDIFICS));
 681         outw(status_rate | 0x10, (state->card->iobase + ALI_SPDIFCSR + 2));
 682 }
 683
 684 /* get current playback/recording dma buffer pointer (byte offset from LBA),
 685    called with spinlock held! */
 686
 687 static inline unsigned ali_get_dma_addr(struct ali_state *state, int rec)
 688 {
 689         struct dmabuf *dmabuf = &state->dmabuf;
 690         unsigned int civ, offset, port, port_picb;
 691         unsigned int data;
 692
 693         if (!dmabuf->enable)
 694                 return 0;
 695
 696         if (rec == 1)
 697                 port = state->card->iobase + dmabuf->read_channel->port;
 698         else if (rec == 2)
 699                 port = state->card->iobase + dmabuf->codec_spdifout_channel->port;
 700         else if (rec == 3)
 701                 port = state->card->iobase + dmabuf->controller_spdifout_channel->port;
 702         else
 703                 port = state->card->iobase + dmabuf->write_channel->port;
 704
 705         port_picb = port + OFF_PICB;
 706
 707         do {
 708                 civ = inb(port + OFF_CIV) & 31;
 709                 offset = inw(port_picb);
 710                 /* Must have a delay here! */
 711                 if (offset == 0)
 712                         udelay(1);
 713
 714                 /* Reread both registers and make sure that that total
 715                  * offset from the first reading to the second is 0.
 716                  * There is an issue with SiS hardware where it will count
 717                  * picb down to 0, then update civ to the next value,
 718                  * then set the new picb to fragsize bytes.  We can catch
 719                  * it between the civ update and the picb update, making
 720                  * it look as though we are 1 fragsize ahead of where we
 721                  * are.  The next to we get the address though, it will
 722                  * be back in thdelay is more than long enough
 723                  * that we won't have to worry about the chip still being
 724                  * out of sync with reality ;-)
 725                  */
 726         } while (civ != (inb(port + OFF_CIV) & 31) || offset != inw(port_picb));
 727
 728         data = ((civ + 1) * dmabuf->fragsize - (2 * offset)) % dmabuf->dmasize;
 729         if (inw(port_picb) == 0)
 730                 data -= 2048;
 731
 732         return data;
 733 }
 734
 735 /* Stop recording (lock held) */
 736 static inline void __stop_adc(struct ali_state *state)
 737 {
 738         struct dmabuf *dmabuf = &state->dmabuf;
 739         struct ali_card *card = state->card;
 740
 741         dmabuf->enable &= ~ADC_RUNNING;
 742
 743         outl((1 << 18) | (1 << 16), card->iobase + ALI_DMACR);
 744         udelay(1);
 745
 746         outb(0, card->iobase + PI_CR);
 747         while (inb(card->iobase + PI_CR) != 0);
 748
 749         // now clear any latent interrupt bits (like the halt bit)
 750         outb(inb(card->iobase + PI_SR) | 0x001e, card->iobase + PI_SR);
 751         outl(inl(card->iobase + ALI_INTERRUPTSR) & INT_PCMIN, card->iobase + ALI_INTERRUPTSR);
 752 }
 753
 754 static void stop_adc(struct ali_state *state)
 755 {
 756         struct ali_card *card = state->card;
 757         unsigned long flags;
 758         spin_lock_irqsave(&card->lock, flags);
 759         __stop_adc(state);
 760         spin_unlock_irqrestore(&card->lock, flags);
 761 }
 762
 763 static inline void __start_adc(struct ali_state *state)
 764 {
 765         struct dmabuf *dmabuf = &state->dmabuf;
 766
 767         if (dmabuf->count < dmabuf->dmasize && dmabuf->ready
 768             && !dmabuf->enable && (dmabuf->trigger & PCM_ENABLE_INPUT)) {
 769                 dmabuf->enable |= ADC_RUNNING;
 770                 outb((1 << 4) | (1 << 2), state->card->iobase + PI_CR);
 771                 if (state->card->channel[0].used == 1)
 772                         outl(1, state->card->iobase + ALI_DMACR);       // DMA CONTROL REGISTRER
 773                 udelay(100);
 774                 if (state->card->channel[2].used == 1)
 775                         outl((1 << 2), state->card->iobase + ALI_DMACR);        //DMA CONTROL REGISTER
 776                 udelay(100);
 777         }
 778 }
 779
 780 static void start_adc(struct ali_state *state)
 781 {
 782         struct ali_card *card = state->card;
 783         unsigned long flags;
 784
 785         spin_lock_irqsave(&card->lock, flags);
 786         __start_adc(state);
 787         spin_unlock_irqrestore(&card->lock, flags);
 788 }
 789
 790 /* stop playback (lock held) */
 791 static inline void __stop_dac(struct ali_state *state)
 792 {
 793         struct dmabuf *dmabuf = &state->dmabuf;
 794         struct ali_card *card = state->card;
 795
 796         dmabuf->enable &= ~DAC_RUNNING;
 797         outl(0x00020000, card->iobase + 0x08);
 798         outb(0, card->iobase + PO_CR);
 799         while (inb(card->iobase + PO_CR) != 0)
 800                 cpu_relax();
 801
 802         outb(inb(card->iobase + PO_SR) | 0x001e, card->iobase + PO_SR);
 803
 804         outl(inl(card->iobase + ALI_INTERRUPTSR) & INT_PCMOUT, card->iobase + ALI_INTERRUPTSR);
 805 }
 806
 807 static void stop_dac(struct ali_state *state)
 808 {
 809         struct ali_card *card = state->card;
 810         unsigned long flags;
 811         spin_lock_irqsave(&card->lock, flags);
 812         __stop_dac(state);
 813         spin_unlock_irqrestore(&card->lock, flags);
 814 }
 815
 816 static inline void __start_dac(struct ali_state *state)
 817 {
 818         struct dmabuf *dmabuf = &state->dmabuf;
 819         if (dmabuf->count > 0 && dmabuf->ready && !dmabuf->enable &&
 820             (dmabuf->trigger & PCM_ENABLE_OUTPUT)) {
 821                 dmabuf->enable |= DAC_RUNNING;
 822                 outb((1 << 4) | (1 << 2), state->card->iobase + PO_CR);
 823                 outl((1 << 1), state->card->iobase + 0x08);     //dma control register
 824         }
 825 }
 826
 827 static void start_dac(struct ali_state *state)
 828 {
 829         struct ali_card *card = state->card;
 830         unsigned long flags;
 831         spin_lock_irqsave(&card->lock, flags);
 832         __start_dac(state);
 833         spin_unlock_irqrestore(&card->lock, flags);
 834 }
 835
 836 /* stop codec and controller spdif out  (lock held) */
 837 static inline void __stop_spdifout(struct ali_state *state)
 838 {
 839         struct dmabuf *dmabuf = &state->dmabuf;
 840         struct ali_card *card = state->card;
 841
 842         if (codec_independent_spdif_locked > 0) {
 843                 dmabuf->enable &= ~CODEC_SPDIFOUT_RUNNING;
 844                 outl((1 << 19), card->iobase + 0x08);
 845                 outb(0, card->iobase + CODECSPDIFOUT_CR);
 846
 847                 while (inb(card->iobase + CODECSPDIFOUT_CR) != 0)
 848                         cpu_relax();
 849
 850                 outb(inb(card->iobase + CODECSPDIFOUT_SR) | 0x001e, card->iobase + CODECSPDIFOUT_SR);
 851                 outl(inl(card->iobase + ALI_INTERRUPTSR) & INT_CODECSPDIFOUT, card->iobase + ALI_INTERRUPTSR);
 852         } else {
 853                 if (controller_independent_spdif_locked > 0) {
 854                         dmabuf->enable &= ~CONTROLLER_SPDIFOUT_RUNNING;
 855                         outl((1 << 23), card->iobase + 0x08);
 856                         outb(0, card->iobase + CONTROLLERSPDIFOUT_CR);
 857                         while (inb(card->iobase + CONTROLLERSPDIFOUT_CR) != 0)
 858                                 cpu_relax();
 859                         outb(inb(card->iobase + CONTROLLERSPDIFOUT_SR) | 0x001e, card->iobase + CONTROLLERSPDIFOUT_SR);
 860                         outl(inl(card->iobase + ALI_INTERRUPTSR) & INT_SPDIFOUT, card->iobase + ALI_INTERRUPTSR);
 861                 }
 862         }
 863 }
 864
 865 static void stop_spdifout(struct ali_state *state)
 866 {
 867         struct ali_card *card = state->card;
 868         unsigned long flags;
 869         spin_lock_irqsave(&card->lock, flags);
 870         __stop_spdifout(state);
 871         spin_unlock_irqrestore(&card->lock, flags);
 872 }
 873
 874 static inline void __start_spdifout(struct ali_state *state)
 875 {
 876         struct dmabuf *dmabuf = &state->dmabuf;
 877         if (dmabuf->count > 0 && dmabuf->ready && !dmabuf->enable &&
 878             (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)) {
 879                 if (codec_independent_spdif_locked > 0) {
 880                         dmabuf->enable |= CODEC_SPDIFOUT_RUNNING;
 881                         outb((1 << 4) | (1 << 2), state->card->iobase + CODECSPDIFOUT_CR);
 882                         outl((1 << 3), state->card->iobase + 0x08);     //dma control register
 883                 } else {
 884                         if (controller_independent_spdif_locked > 0) {
 885                                 dmabuf->enable |= CONTROLLER_SPDIFOUT_RUNNING;
 886                                 outb((1 << 4) | (1 << 2), state->card->iobase + CONTROLLERSPDIFOUT_CR);
 887                                 outl((1 << 7), state->card->iobase + 0x08);     //dma control register
 888                         }
 889                 }
 890         }
 891 }
 892
 893 static void start_spdifout(struct ali_state *state)
 894 {
 895         struct ali_card *card = state->card;
 896         unsigned long flags;
 897         spin_lock_irqsave(&card->lock, flags);
 898         __start_spdifout(state);
 899         spin_unlock_irqrestore(&card->lock, flags);
 900 }
 901
 902 #define DMABUF_DEFAULTORDER (16-PAGE_SHIFT)
 903 #define DMABUF_MINORDER 1
 904
 905 /* allocate DMA buffer, playback , recording,spdif out  buffer should be allocated separately */
 906 static int alloc_dmabuf(struct ali_state *state)
 907 {
 908         struct dmabuf *dmabuf = &state->dmabuf;
 909         void *rawbuf = NULL;
 910         int order, size;
 911         struct page *page, *pend;
 912
 913         /* If we don't have any oss frag params, then use our default ones */
 914         if (dmabuf->ossmaxfrags == 0)
 915                 dmabuf->ossmaxfrags = 4;
 916         if (dmabuf->ossfragsize == 0)
 917                 dmabuf->ossfragsize = (PAGE_SIZE << DMABUF_DEFAULTORDER) / dmabuf->ossmaxfrags;
 918         size = dmabuf->ossfragsize * dmabuf->ossmaxfrags;
 919
 920         if (dmabuf->rawbuf && (PAGE_SIZE << dmabuf->buforder) == size)
 921                 return 0;
 922         /* alloc enough to satisfy the oss params */
 923         for (order = DMABUF_DEFAULTORDER; order >= DMABUF_MINORDER; order--) {
 924                 if ((PAGE_SIZE << order) > size)
 925                         continue;
 926                 if ((rawbuf = pci_alloc_consistent(state->card->pci_dev,
 927                                                    PAGE_SIZE << order,
 928                                                    &dmabuf->dma_handle)))
 929                         break;
 930         }
 931         if (!rawbuf)
 932                 return -ENOMEM;
 933
 934         dmabuf->ready = dmabuf->mapped = 0;
 935         dmabuf->rawbuf = rawbuf;
 936         dmabuf->buforder = order;
 937
 938         /* now mark the pages as reserved; otherwise remap_page_range doesn't do what we want */
 939         pend = virt_to_page(rawbuf + (PAGE_SIZE << order) - 1);
 940         for (page = virt_to_page(rawbuf); page <= pend; page++)
 941                 SetPageReserved(page);
 942         return 0;
 943 }
 944
 945 /* free DMA buffer */
 946 static void dealloc_dmabuf(struct ali_state *state)
 947 {
 948         struct dmabuf *dmabuf = &state->dmabuf;
 949         struct page *page, *pend;
 950
 951         if (dmabuf->rawbuf) {
 952                 /* undo marking the pages as reserved */
 953                 pend = virt_to_page(dmabuf->rawbuf + (PAGE_SIZE << dmabuf->buforder) - 1);
 954                 for (page = virt_to_page(dmabuf->rawbuf); page <= pend; page++)
 955                         ClearPageReserved(page);
 956                 pci_free_consistent(state->card->pci_dev,
 957                                     PAGE_SIZE << dmabuf->buforder,
 958                                     dmabuf->rawbuf, dmabuf->dma_handle);
 959         }
 960         dmabuf->rawbuf = NULL;
 961         dmabuf->mapped = dmabuf->ready = 0;
 962 }
 963
 964 static int prog_dmabuf(struct ali_state *state, unsigned rec)
 965 {
 966         struct dmabuf *dmabuf = &state->dmabuf;
 967         struct ali_channel *c = NULL;
 968         struct sg_item *sg;
 969         unsigned long flags;
 970         int ret;
 971         unsigned fragint;
 972         int i;
 973
 974         spin_lock_irqsave(&state->card->lock, flags);
 975         if (dmabuf->enable & DAC_RUNNING)
 976                 __stop_dac(state);
 977         if (dmabuf->enable & ADC_RUNNING)
 978                 __stop_adc(state);
 979         if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
 980                 __stop_spdifout(state);
 981         if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
 982                 __stop_spdifout(state);
 983
 984         dmabuf->total_bytes = 0;
 985         dmabuf->count = dmabuf->error = 0;
 986         dmabuf->swptr = dmabuf->hwptr = 0;
 987         spin_unlock_irqrestore(&state->card->lock, flags);
 988
 989         /* allocate DMA buffer, let alloc_dmabuf determine if we are already
 990          * allocated well enough or if we should replace the current buffer
 991          * (assuming one is already allocated, if it isn't, then allocate it).
 992          */
 993         if ((ret = alloc_dmabuf(state)))
 994                 return ret;
 995
 996         /* FIXME: figure out all this OSS fragment stuff */
 997         /* I did, it now does what it should according to the OSS API.  DL */
 998         /* We may not have realloced our dmabuf, but the fragment size to
 999          * fragment number ratio may have changed, so go ahead and reprogram
1000          * things
1001          */
1002
1003         dmabuf->dmasize = PAGE_SIZE << dmabuf->buforder;
1004         dmabuf->numfrag = SG_LEN;
1005         dmabuf->fragsize = dmabuf->dmasize / dmabuf->numfrag;
1006         dmabuf->fragsamples = dmabuf->fragsize >> 1;
1007         dmabuf->userfragsize = dmabuf->ossfragsize;
1008         dmabuf->userfrags = dmabuf->dmasize / dmabuf->ossfragsize;
1009
1010         memset(dmabuf->rawbuf, 0, dmabuf->dmasize);
1011
1012         if (dmabuf->ossmaxfrags == 4) {
1013                 fragint = 8;
1014                 dmabuf->fragshift = 2;
1015         } else if (dmabuf->ossmaxfrags == 8) {
1016                 fragint = 4;
1017                 dmabuf->fragshift = 3;
1018         } else if (dmabuf->ossmaxfrags == 16) {
1019                 fragint = 2;
1020                 dmabuf->fragshift = 4;
1021         } else {
1022                 fragint = 1;
1023                 dmabuf->fragshift = 5;
1024         }
1025         /*
1026          *      Now set up the ring
1027          */
1028
1029         if (rec == 1)
1030                 c = dmabuf->read_channel;
1031         else if (rec == 2)
1032                 c = dmabuf->codec_spdifout_channel;
1033         else if (rec == 3)
1034                 c = dmabuf->controller_spdifout_channel;
1035         else if (rec == 0)
1036                 c = dmabuf->write_channel;
1037         if (c != NULL) {
1038                 sg = &c->sg[0];
1039                 /*
1040                  *      Load up 32 sg entries and take an interrupt at half
1041                  *      way (we might want more interrupts later..)
1042                  */
1043                 for (i = 0; i < dmabuf->numfrag; i++) {
1044                         sg->busaddr =
1045                             virt_to_bus(dmabuf->rawbuf +
1046                                         dmabuf->fragsize * i);
1047                         // the card will always be doing 16bit stereo
1048                         sg->control = dmabuf->fragsamples;
1049                         sg->control |= CON_BUFPAD;      //I modify
1050                         // set us up to get IOC interrupts as often as needed to
1051                         // satisfy numfrag requirements, no more
1052                         if (((i + 1) % fragint) == 0) {
1053                                 sg->control |= CON_IOC;
1054                         }
1055                         sg++;
1056                 }
1057                 spin_lock_irqsave(&state->card->lock, flags);
1058                 outb(2, state->card->iobase + c->port + OFF_CR);        /* reset DMA machine */
1059                 outl(virt_to_bus(&c->sg[0]), state->card->iobase + c->port + OFF_BDBAR);
1060                 outb(0, state->card->iobase + c->port + OFF_CIV);
1061                 outb(0, state->card->iobase + c->port + OFF_LVI);
1062                 spin_unlock_irqrestore(&state->card->lock, flags);
1063         }
1064         /* set the ready flag for the dma buffer */
1065         dmabuf->ready = 1;
1066         return 0;
1067 }
1068
1069 static void __ali_update_lvi(struct ali_state *state, int rec)
1070 {
1071         struct dmabuf *dmabuf = &state->dmabuf;
1072         int x, port;
1073         port = state->card->iobase;
1074         if (rec == 1)
1075                 port += dmabuf->read_channel->port;
1076         else if (rec == 2)
1077                 port += dmabuf->codec_spdifout_channel->port;
1078         else if (rec == 3)
1079                 port += dmabuf->controller_spdifout_channel->port;
1080         else if (rec == 0)
1081                 port += dmabuf->write_channel->port;
1082         /* if we are currently stopped, then our CIV is actually set to our
1083          * *last* sg segment and we are ready to wrap to the next.  However,
1084          * if we set our LVI to the last sg segment, then it won't wrap to
1085          * the next sg segment, it won't even get a start.  So, instead, when
1086          * we are stopped, we set both the LVI value and also we increment
1087          * the CIV value to the next sg segment to be played so that when
1088          * we call start_{dac,adc}, things will operate properly
1089          */
1090         if (!dmabuf->enable && dmabuf->ready) {
1091                 if (rec && dmabuf->count < dmabuf->dmasize && (dmabuf->trigger & PCM_ENABLE_INPUT)) {
1092                         outb((inb(port + OFF_CIV) + 1) & 31, port + OFF_LVI);
1093                         __start_adc(state);
1094                         while (! (inb(port + OFF_CR) & ((1 << 4) | (1 << 2))))
1095                                 cpu_relax();
1096                 } else if (!rec && dmabuf->count && (dmabuf->trigger & PCM_ENABLE_OUTPUT)) {
1097                         outb((inb(port + OFF_CIV) + 1) & 31, port + OFF_LVI);
1098                         __start_dac(state);
1099                         while (!(inb(port + OFF_CR) & ((1 << 4) | (1 << 2))))
1100                                 cpu_relax();
1101                 } else if (rec && dmabuf->count && (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)) {
1102                         if (codec_independent_spdif_locked > 0) {
1103                                 // outb((inb(port+OFF_CIV))&31, port+OFF_LVI);
1104                                 outb((inb(port + OFF_CIV) + 1) & 31, port + OFF_LVI);
1105                                 __start_spdifout(state);
1106                                 while (!(inb(port + OFF_CR) & ((1 << 4) | (1 << 2))))
1107                                         cpu_relax();
1108                         } else {
1109                                 if (controller_independent_spdif_locked > 0) {
1110                                         outb((inb(port + OFF_CIV) + 1) & 31, port + OFF_LVI);
1111                                         __start_spdifout(state);
1112                                         while (!(inb(port + OFF_CR) & ((1 << 4) | (1 << 2))))
1113                                                 cpu_relax();
1114                                 }
1115                         }
1116                 }
1117         }
1118
1119         /* swptr - 1 is the tail of our transfer */
1120         x = (dmabuf->dmasize + dmabuf->swptr - 1) % dmabuf->dmasize;
1121         x /= dmabuf->fragsize;
1122         outb(x, port + OFF_LVI);
1123 }
1124
1125 static void ali_update_lvi(struct ali_state *state, int rec)
1126 {
1127         struct dmabuf *dmabuf = &state->dmabuf;
1128         unsigned long flags;
1129         if (!dmabuf->ready)
1130                 return;
1131         spin_lock_irqsave(&state->card->lock, flags);
1132         __ali_update_lvi(state, rec);
1133         spin_unlock_irqrestore(&state->card->lock, flags);
1134 }
1135
1136 /* update buffer manangement pointers, especially, dmabuf->count and dmabuf->hwptr */
1137 static void ali_update_ptr(struct ali_state *state)
1138 {
1139         struct dmabuf *dmabuf = &state->dmabuf;
1140         unsigned hwptr;
1141         int diff;
1142
1143         /* error handling and process wake up for DAC */
1144         if (dmabuf->enable == ADC_RUNNING) {
1145                 /* update hardware pointer */
1146                 hwptr = ali_get_dma_addr(state, 1);
1147                 diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize;
1148                 dmabuf->hwptr = hwptr;
1149                 dmabuf->total_bytes += diff;
1150                 dmabuf->count += diff;
1151                 if (dmabuf->count > dmabuf->dmasize) {
1152                         /* buffer underrun or buffer overrun */
1153                         /* this is normal for the end of a read */
1154                         /* only give an error if we went past the */
1155                         /* last valid sg entry */
1156                         if ((inb(state->card->iobase + PI_CIV) & 31) != (inb(state->card->iobase + PI_LVI) & 31)) {
1157                                 printk(KERN_WARNING "ali_audio: DMA overrun on read\n");
1158                                 dmabuf->error++;
1159                         }
1160                 }
1161                 if (dmabuf->count > dmabuf->userfragsize)
1162                         wake_up(&dmabuf->wait);
1163         }
1164         /* error handling and process wake up for DAC */
1165         if (dmabuf->enable == DAC_RUNNING) {
1166                 /* update hardware pointer */
1167                 hwptr = ali_get_dma_addr(state, 0);
1168                 diff =
1169                     (dmabuf->dmasize + hwptr -
1170                      dmabuf->hwptr) % dmabuf->dmasize;
1171 #if defined(DEBUG_INTERRUPTS) || defined(DEBUG_MMAP)
1172                 printk("DAC HWP %d,%d,%d\n", hwptr, dmabuf->hwptr, diff);
1173 #endif
1174                 dmabuf->hwptr = hwptr;
1175                 dmabuf->total_bytes += diff;
1176                 dmabuf->count -= diff;
1177                 if (dmabuf->count < 0) {
1178                         /* buffer underrun or buffer overrun */
1179                         /* this is normal for the end of a write */
1180                         /* only give an error if we went past the */
1181                         /* last valid sg entry */
1182                         if ((inb(state->card->iobase + PO_CIV) & 31) != (inb(state->card->iobase + PO_LVI) & 31)) {
1183                                 printk(KERN_WARNING "ali_audio: DMA overrun on write\n");
1184                                 printk(KERN_DEBUG "ali_audio: CIV %d, LVI %d, hwptr %x, count %d\n",
1185                                                         inb(state->card->iobase + PO_CIV) & 31,
1186                                                         inb(state->card->iobase + PO_LVI) & 31,
1187                                                         dmabuf->hwptr,
1188                                                         dmabuf->count);
1189                                 dmabuf->error++;
1190                         }
1191                 }
1192                 if (dmabuf->count < (dmabuf->dmasize - dmabuf->userfragsize))
1193                         wake_up(&dmabuf->wait);
1194         }
1195
1196         /* error handling and process wake up for CODEC SPDIF OUT */
1197         if (dmabuf->enable == CODEC_SPDIFOUT_RUNNING) {
1198                 /* update hardware pointer */
1199                 hwptr = ali_get_dma_addr(state, 2);
1200                 diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize;
1201                 dmabuf->hwptr = hwptr;
1202                 dmabuf->total_bytes += diff;
1203                 dmabuf->count -= diff;
1204                 if (dmabuf->count < 0) {
1205                         /* buffer underrun or buffer overrun */
1206                         /* this is normal for the end of a write */
1207                         /* only give an error if we went past the */
1208                         /* last valid sg entry */
1209                         if ((inb(state->card->iobase + CODECSPDIFOUT_CIV) & 31) != (inb(state->card->iobase + CODECSPDIFOUT_LVI) & 31)) {
1210                                 printk(KERN_WARNING "ali_audio: DMA overrun on write\n");
1211                                 printk(KERN_DEBUG "ali_audio: CIV %d, LVI %d, hwptr %x, count %d\n",
1212                                         inb(state->card->iobase + CODECSPDIFOUT_CIV) & 31,
1213                                         inb(state->card->iobase + CODECSPDIFOUT_LVI) & 31,
1214                                         dmabuf->hwptr, dmabuf->count);
1215                                 dmabuf->error++;
1216                         }
1217                 }
1218                 if (dmabuf->count < (dmabuf->dmasize - dmabuf->userfragsize))
1219                         wake_up(&dmabuf->wait);
1220         }
1221         /* error handling and process wake up for CONTROLLER SPDIF OUT */
1222         if (dmabuf->enable == CONTROLLER_SPDIFOUT_RUNNING) {
1223                 /* update hardware pointer */
1224                 hwptr = ali_get_dma_addr(state, 3);
1225                 diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize;
1226                 dmabuf->hwptr = hwptr;
1227                 dmabuf->total_bytes += diff;
1228                 dmabuf->count -= diff;
1229                 if (dmabuf->count < 0) {
1230                         /* buffer underrun or buffer overrun */
1231                         /* this is normal for the end of a write */
1232                         /* only give an error if we went past the */
1233                         /* last valid sg entry */
1234                         if ((inb(state->card->iobase + CONTROLLERSPDIFOUT_CIV) & 31) != (inb(state->card->iobase + CONTROLLERSPDIFOUT_LVI) & 31)) {
1235                                 printk(KERN_WARNING
1236                                        "ali_audio: DMA overrun on write\n");
1237                                 printk("ali_audio: CIV %d, LVI %d, hwptr %x, "
1238                                         "count %d\n",
1239                                                 inb(state->card->iobase + CONTROLLERSPDIFOUT_CIV) & 31,
1240                                                 inb(state->card->iobase + CONTROLLERSPDIFOUT_LVI) & 31,
1241                                                 dmabuf->hwptr, dmabuf->count);
1242                                 dmabuf->error++;
1243                         }
1244                 }
1245                 if (dmabuf->count < (dmabuf->dmasize - dmabuf->userfragsize))
1246                         wake_up(&dmabuf->wait);
1247         }
1248 }
1249
1250 static inline int ali_get_free_write_space(struct
1251                                            ali_state
1252                                            *state)
1253 {
1254         struct dmabuf *dmabuf = &state->dmabuf;
1255         int free;
1256
1257         if (dmabuf->count < 0) {
1258                 dmabuf->count = 0;
1259                 dmabuf->swptr = dmabuf->hwptr;
1260         }
1261         free = dmabuf->dmasize - dmabuf->swptr;
1262         if ((dmabuf->count + free) > dmabuf->dmasize){
1263                 free = dmabuf->dmasize - dmabuf->count;
1264         }
1265         return free;
1266 }
1267
1268 static inline int ali_get_available_read_data(struct
1269                                               ali_state
1270                                               *state)
1271 {
1272         struct dmabuf *dmabuf = &state->dmabuf;
1273         int avail;
1274         ali_update_ptr(state);
1275         // catch overruns during record
1276         if (dmabuf->count > dmabuf->dmasize) {
1277                 dmabuf->count = dmabuf->dmasize;
1278                 dmabuf->swptr = dmabuf->hwptr;
1279         }
1280         avail = dmabuf->count;
1281         avail -= (dmabuf->hwptr % dmabuf->fragsize);
1282         if (avail < 0)
1283                 return (0);
1284         return (avail);
1285 }
1286
1287 static int drain_dac(struct ali_state *state, int signals_allowed)
1288 {
1289
1290         DECLARE_WAITQUEUE(wait, current);
1291         struct dmabuf *dmabuf = &state->dmabuf;
1292         unsigned long flags;
1293         unsigned long tmo;
1294         int count;
1295         if (!dmabuf->ready)
1296                 return 0;
1297         if (dmabuf->mapped) {
1298                 stop_dac(state);
1299                 return 0;
1300         }
1301         add_wait_queue(&dmabuf->wait, &wait);
1302         for (;;) {
1303
1304                 spin_lock_irqsave(&state->card->lock, flags);
1305                 ali_update_ptr(state);
1306                 count = dmabuf->count;
1307                 spin_unlock_irqrestore(&state->card->lock, flags);
1308                 if (count <= 0)
1309                         break;
1310                 /*
1311                  * This will make sure that our LVI is correct, that our
1312                  * pointer is updated, and that the DAC is running.  We
1313                  * have to force the setting of dmabuf->trigger to avoid
1314                  * any possible deadlocks.
1315                  */
1316                 if (!dmabuf->enable) {
1317                         dmabuf->trigger = PCM_ENABLE_OUTPUT;
1318                         ali_update_lvi(state, 0);
1319                 }
1320                 if (signal_pending(current) && signals_allowed) {
1321                         break;
1322                 }
1323
1324                 /* It seems that we have to set the current state to
1325                  * TASK_INTERRUPTIBLE every time to make the process
1326                  * really go to sleep.  This also has to be *after* the
1327                  * update_ptr() call because update_ptr is likely to
1328                  * do a wake_up() which will unset this before we ever
1329                  * try to sleep, resuling in a tight loop in this code
1330                  * instead of actually sleeping and waiting for an
1331                  * interrupt to wake us up!
1332                  */
1333                 set_current_state(TASK_INTERRUPTIBLE);
1334                 /*
1335                  * set the timeout to significantly longer than it *should*
1336                  * take for the DAC to drain the DMA buffer
1337                  */
1338                 tmo = (count * HZ) / (dmabuf->rate);
1339                 if (!schedule_timeout(tmo >= 2 ? tmo : 2)) {
1340                         printk(KERN_ERR "ali_audio: drain_dac, dma timeout?\n");
1341                         count = 0;
1342                         break;
1343                 }
1344         }
1345         set_current_state(TASK_RUNNING);
1346         remove_wait_queue(&dmabuf->wait, &wait);
1347         if (count > 0 && signal_pending(current) && signals_allowed)
1348                 return -ERESTARTSYS;
1349         stop_dac(state);
1350         return 0;
1351 }
1352
1353
1354 static int drain_spdifout(struct ali_state *state, int signals_allowed)
1355 {
1356
1357         DECLARE_WAITQUEUE(wait, current);
1358         struct dmabuf *dmabuf = &state->dmabuf;
1359         unsigned long flags;
1360         unsigned long tmo;
1361         int count;
1362         if (!dmabuf->ready)
1363                 return 0;
1364         if (dmabuf->mapped) {
1365                 stop_spdifout(state);
1366                 return 0;
1367         }
1368         add_wait_queue(&dmabuf->wait, &wait);
1369         for (;;) {
1370
1371                 spin_lock_irqsave(&state->card->lock, flags);
1372                 ali_update_ptr(state);
1373                 count = dmabuf->count;
1374                 spin_unlock_irqrestore(&state->card->lock, flags);
1375                 if (count <= 0)
1376                         break;
1377                 /*
1378                  * This will make sure that our LVI is correct, that our
1379                  * pointer is updated, and that the DAC is running.  We
1380                  * have to force the setting of dmabuf->trigger to avoid
1381                  * any possible deadlocks.
1382                  */
1383                 if (!dmabuf->enable) {
1384                         if (codec_independent_spdif_locked > 0) {
1385                                 dmabuf->trigger = SPDIF_ENABLE_OUTPUT;
1386                                 ali_update_lvi(state, 2);
1387                         } else {
1388                                 if (controller_independent_spdif_locked > 0) {
1389                                         dmabuf->trigger = SPDIF_ENABLE_OUTPUT;
1390                                         ali_update_lvi(state, 3);
1391                                 }
1392                         }
1393                 }
1394                 if (signal_pending(current) && signals_allowed) {
1395                         break;
1396                 }
1397
1398                 /* It seems that we have to set the current state to
1399                  * TASK_INTERRUPTIBLE every time to make the process
1400                  * really go to sleep.  This also has to be *after* the
1401                  * update_ptr() call because update_ptr is likely to
1402                  * do a wake_up() which will unset this before we ever
1403                  * try to sleep, resuling in a tight loop in this code
1404                  * instead of actually sleeping and waiting for an
1405                  * interrupt to wake us up!
1406                  */
1407                 set_current_state(TASK_INTERRUPTIBLE);
1408                 /*
1409                  * set the timeout to significantly longer than it *should*
1410                  * take for the DAC to drain the DMA buffer
1411                  */
1412                 tmo = (count * HZ) / (dmabuf->rate);
1413                 if (!schedule_timeout(tmo >= 2 ? tmo : 2)) {
1414                         printk(KERN_ERR "ali_audio: drain_spdifout, dma timeout?\n");
1415                         count = 0;
1416                         break;
1417                 }
1418         }
1419         set_current_state(TASK_RUNNING);
1420         remove_wait_queue(&dmabuf->wait, &wait);
1421         if (count > 0 && signal_pending(current) && signals_allowed)
1422                 return -ERESTARTSYS;
1423         stop_spdifout(state);
1424         return 0;
1425 }
1426
1427 static void ali_channel_interrupt(struct ali_card *card)
1428 {
1429         int i, count;
1430
1431         for (i = 0; i < NR_HW_CH; i++) {
1432                 struct ali_state *state = card->states[i];
1433                 struct ali_channel *c = NULL;
1434                 struct dmabuf *dmabuf;
1435                 unsigned long port = card->iobase;
1436                 u16 status;
1437                 if (!state)
1438                         continue;
1439                 if (!state->dmabuf.ready)
1440                         continue;
1441                 dmabuf = &state->dmabuf;
1442                 if (codec_independent_spdif_locked > 0) {
1443                         if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) {
1444                                 c = dmabuf->codec_spdifout_channel;
1445                         }
1446                 } else {
1447                         if (controller_independent_spdif_locked > 0) {
1448                                 if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
1449                                         c = dmabuf->controller_spdifout_channel;
1450                         } else {
1451                                 if (dmabuf->enable & DAC_RUNNING) {
1452                                         c = dmabuf->write_channel;
1453                                 } else if (dmabuf->enable & ADC_RUNNING) {
1454                                         c = dmabuf->read_channel;
1455                                 } else
1456                                         continue;
1457                         }
1458                 }
1459                 port += c->port;
1460
1461                 status = inw(port + OFF_SR);
1462
1463                 if (status & DMA_INT_COMPLETE) {
1464                         /* only wake_up() waiters if this interrupt signals
1465                          * us being beyond a userfragsize of data open or
1466                          * available, and ali_update_ptr() does that for
1467                          * us
1468                          */
1469                         ali_update_ptr(state);
1470                 }
1471
1472                 if (status & DMA_INT_LVI) {
1473                         ali_update_ptr(state);
1474                         wake_up(&dmabuf->wait);
1475
1476                         if (dmabuf->enable & DAC_RUNNING)
1477                                 count = dmabuf->count;
1478                         else if (dmabuf->enable & ADC_RUNNING)
1479                                 count = dmabuf->dmasize - dmabuf->count;
1480                         else if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
1481                                 count = dmabuf->count;
1482                         else if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
1483                                 count = dmabuf->count;
1484                         else count = 0;
1485
1486                         if (count > 0) {
1487                                 if (dmabuf->enable & DAC_RUNNING)
1488                                         outl((1 << 1), state->card->iobase + ALI_DMACR);
1489                                 else if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
1490                                                 outl((1 << 3), state->card->iobase + ALI_DMACR);
1491                                 else if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
1492                                         outl((1 << 7), state->card->iobase + ALI_DMACR);
1493                         } else {
1494                                 if (dmabuf->enable & DAC_RUNNING)
1495                                         __stop_dac(state);
1496                                 if (dmabuf->enable & ADC_RUNNING)
1497                                         __stop_adc(state);
1498                                 if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
1499                                         __stop_spdifout(state);
1500                                 if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
1501                                         __stop_spdifout(state);
1502                                 dmabuf->enable = 0;
1503                                 wake_up(&dmabuf->wait);
1504                         }
1505
1506                 }
1507                 if (!(status & DMA_INT_DCH)) {
1508                         ali_update_ptr(state);
1509                         wake_up(&dmabuf->wait);
1510                         if (dmabuf->enable & DAC_RUNNING)
1511                                 count = dmabuf->count;
1512                         else if (dmabuf->enable & ADC_RUNNING)
1513                                 count = dmabuf->dmasize - dmabuf->count;
1514                         else if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
1515                                 count = dmabuf->count;
1516                         else if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
1517                                 count = dmabuf->count;
1518                         else
1519                                 count = 0;
1520
1521                         if (count > 0) {
1522                                 if (dmabuf->enable & DAC_RUNNING)
1523                                         outl((1 << 1), state->card->iobase + ALI_DMACR);
1524                                 else if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
1525                                         outl((1 << 3), state->card->iobase + ALI_DMACR);
1526                                 else if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
1527                                         outl((1 << 7), state->card->iobase + ALI_DMACR);
1528                         } else {
1529                                 if (dmabuf->enable & DAC_RUNNING)
1530                                         __stop_dac(state);
1531                                 if (dmabuf->enable & ADC_RUNNING)
1532                                         __stop_adc(state);
1533                                 if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING)
1534                                         __stop_spdifout(state);
1535                                 if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)
1536                                         __stop_spdifout(state);
1537                                 dmabuf->enable = 0;
1538                                 wake_up(&dmabuf->wait);
1539                         }
1540                 }
1541                 outw(status & DMA_INT_MASK, port + OFF_SR);
1542         }
1543 }
1544
1545 static irqreturn_t ali_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1546 {
1547         struct ali_card *card = (struct ali_card *) dev_id;
1548         u32 status;
1549         u16 status2;
1550
1551         spin_lock(&card->lock);
1552         status = inl(card->iobase + ALI_INTERRUPTSR);
1553         if (!(status & INT_MASK)) {
1554                 spin_unlock(&card->lock);
1555                 return IRQ_NONE;                /* not for us */
1556         }
1557
1558         if (codec_independent_spdif_locked > 0) {
1559                 if (globel == 0) {
1560                         globel += 1;
1561                         status2 = inw(card->iobase + 0x76);
1562                         outw(status2 | 0x000c, card->iobase + 0x76);
1563                 } else {
1564                         if (status & (INT_PCMOUT | INT_PCMIN | INT_MICIN | INT_SPDIFOUT | INT_CODECSPDIFOUT))
1565                                 ali_channel_interrupt(card);
1566                 }
1567         } else {
1568                 if (status & (INT_PCMOUT | INT_PCMIN | INT_MICIN | INT_SPDIFOUT | INT_CODECSPDIFOUT))
1569                         ali_channel_interrupt(card);
1570         }
1571
1572         /* clear 'em */
1573         outl(status & INT_MASK, card->iobase + ALI_INTERRUPTSR);
1574         spin_unlock(&card->lock);
1575         return IRQ_HANDLED;
1576 }
1577
1578 /* in this loop, dmabuf.count signifies the amount of data that is
1579    waiting to be copied to the user's buffer.  It is filled by the dma
1580    machine and drained by this loop. */
1581
1582 static ssize_t ali_read(struct file *file, char __user *buffer,
1583                         size_t count, loff_t * ppos)
1584 {
1585         struct ali_state *state = (struct ali_state *) file->private_data;
1586         struct ali_card *card = state ? state->card : 0;
1587         struct dmabuf *dmabuf = &state->dmabuf;
1588         ssize_t ret;
1589         unsigned long flags;
1590         unsigned int swptr;
1591         int cnt;
1592         DECLARE_WAITQUEUE(waita, current);
1593 #ifdef DEBUG2
1594         printk("ali_audio: ali_read called, count = %d\n", count);
1595 #endif
1596         if (ppos != &file->f_pos)
1597                 return -ESPIPE;
1598         if (dmabuf->mapped)
1599                 return -ENXIO;
1600         if (dmabuf->enable & DAC_RUNNING)
1601                 return -ENODEV;
1602         if (!dmabuf->read_channel) {
1603                 dmabuf->ready = 0;
1604                 dmabuf->read_channel = card->alloc_rec_pcm_channel(card);
1605                 if (!dmabuf->read_channel) {
1606                         return -EBUSY;
1607                 }
1608         }
1609         if (!dmabuf->ready && (ret = prog_dmabuf(state, 1)))
1610                 return ret;
1611         if (!access_ok(VERIFY_WRITE, buffer, count))
1612                 return -EFAULT;
1613         ret = 0;
1614         add_wait_queue(&dmabuf->wait, &waita);
1615         while (count > 0) {
1616                 set_current_state(TASK_INTERRUPTIBLE);
1617                 spin_lock_irqsave(&card->lock, flags);
1618                 if (PM_SUSPENDED(card)) {
1619                         spin_unlock_irqrestore(&card->lock, flags);
1620                         schedule();
1621                         if (signal_pending(current)) {
1622                                 if (!ret)
1623                                         ret = -EAGAIN;
1624                                 break;
1625                         }
1626                         continue;
1627                 }
1628                 swptr = dmabuf->swptr;
1629                 cnt = ali_get_available_read_data(state);
1630                 // this is to make the copy_to_user simpler below
1631                 if (cnt > (dmabuf->dmasize - swptr))
1632                         cnt = dmabuf->dmasize - swptr;
1633                 spin_unlock_irqrestore(&card->lock, flags);
1634                 if (cnt > count)
1635                         cnt = count;
1636                 /* Lop off the last two bits to force the code to always
1637                  * write in full samples.  This keeps software that sets
1638                  * O_NONBLOCK but doesn't check the return value of the
1639                  * write call from getting things out of state where they
1640                  * think a full 4 byte sample was written when really only
1641                  * a portion was, resulting in odd sound and stereo
1642                  * hysteresis.
1643                  */
1644                 cnt &= ~0x3;
1645                 if (cnt <= 0) {
1646                         unsigned long tmo;
1647                         /*
1648                          * Don't let us deadlock.  The ADC won't start if
1649                          * dmabuf->trigger isn't set.  A call to SETTRIGGER
1650                          * could have turned it off after we set it to on
1651                          * previously.
1652                          */
1653                         dmabuf->trigger = PCM_ENABLE_INPUT;
1654                         /*
1655                          * This does three things.  Updates LVI to be correct,
1656                          * makes sure the ADC is running, and updates the
1657                          * hwptr.
1658                          */
1659                         ali_update_lvi(state, 1);
1660                         if (file->f_flags & O_NONBLOCK) {
1661                                 if (!ret)
1662                                         ret = -EAGAIN;
1663                                 goto done;
1664                         }
1665                         /* Set the timeout to how long it would take to fill
1666                          * two of our buffers.  If we haven't been woke up
1667                          * by then, then we know something is wrong.
1668                          */
1669                         tmo = (dmabuf->dmasize * HZ * 2) / (dmabuf->rate * 4);
1670
1671                         /* There are two situations when sleep_on_timeout returns, one is when
1672                            the interrupt is serviced correctly and the process is waked up by
1673                            ISR ON TIME. Another is when timeout is expired, which means that
1674                            either interrupt is NOT serviced correctly (pending interrupt) or it
1675                            is TOO LATE for the process to be scheduled to run (scheduler latency)
1676                            which results in a (potential) buffer overrun. And worse, there is
1677                            NOTHING we can do to prevent it. */
1678                         if (!schedule_timeout(tmo >= 2 ? tmo : 2)) {
1679                                 printk(KERN_ERR
1680                                        "ali_audio: recording schedule timeout, "
1681                                        "dmasz %u fragsz %u count %i hwptr %u swptr %u\n",
1682                                        dmabuf->dmasize, dmabuf->fragsize,
1683                                        dmabuf->count, dmabuf->hwptr,
1684                                        dmabuf->swptr);
1685                                 /* a buffer overrun, we delay the recovery until next time the
1686                                    while loop begin and we REALLY have space to record */
1687                         }
1688                         if (signal_pending(current)) {
1689                                 ret = ret ? ret : -ERESTARTSYS;
1690                                 goto done;
1691                         }
1692                         continue;
1693                 }
1694
1695                 if (copy_to_user(buffer, dmabuf->rawbuf + swptr, cnt)) {
1696                         if (!ret)
1697                                 ret = -EFAULT;
1698                         goto done;
1699                 }
1700
1701                 swptr = (swptr + cnt) % dmabuf->dmasize;
1702                 spin_lock_irqsave(&card->lock, flags);
1703                 if (PM_SUSPENDED(card)) {
1704                         spin_unlock_irqrestore(&card->lock, flags);
1705                         continue;
1706                 }
1707                 dmabuf->swptr = swptr;
1708                 dmabuf->count -= cnt;
1709                 spin_unlock_irqrestore(&card->lock, flags);
1710                 count -= cnt;
1711                 buffer += cnt;
1712                 ret += cnt;
1713         }
1714 done:
1715         ali_update_lvi(state, 1);
1716         set_current_state(TASK_RUNNING);
1717         remove_wait_queue(&dmabuf->wait, &waita);
1718         return ret;
1719 }
1720
1721 /* in this loop, dmabuf.count signifies the amount of data that is waiting to be dma to
1722    the soundcard.  it is drained by the dma machine and filled by this loop. */
1723 static ssize_t ali_write(struct file *file,
1724                          const char __user *buffer, size_t count, loff_t * ppos)
1725 {
1726         struct ali_state *state = (struct ali_state *) file->private_data;
1727         struct ali_card *card = state ? state->card : 0;
1728         struct dmabuf *dmabuf = &state->dmabuf;
1729         ssize_t ret;
1730         unsigned long flags;
1731         unsigned int swptr = 0;
1732         int cnt, x;
1733         DECLARE_WAITQUEUE(waita, current);
1734 #ifdef DEBUG2
1735         printk("ali_audio: ali_write called, count = %d\n", count);
1736 #endif
1737         if (ppos != &file->f_pos)
1738                 return -ESPIPE;
1739         if (dmabuf->mapped)
1740                 return -ENXIO;
1741         if (dmabuf->enable & ADC_RUNNING)
1742                 return -ENODEV;
1743         if (codec_independent_spdif_locked > 0) {
1744                 if (!dmabuf->codec_spdifout_channel) {
1745                         dmabuf->ready = 0;
1746                         dmabuf->codec_spdifout_channel = card->alloc_codec_spdifout_channel(card);
1747                         if (!dmabuf->codec_spdifout_channel)
1748                                 return -EBUSY;
1749                 }
1750         } else {
1751                 if (controller_independent_spdif_locked > 0) {
1752                         if (!dmabuf->controller_spdifout_channel) {
1753                                 dmabuf->ready = 0;
1754                                 dmabuf->controller_spdifout_channel = card->alloc_controller_spdifout_channel(card);
1755                                 if (!dmabuf->controller_spdifout_channel)
1756                                         return -EBUSY;
1757                         }
1758                 } else {
1759                         if (!dmabuf->write_channel) {
1760                                 dmabuf->ready = 0;
1761                                 dmabuf->write_channel =
1762                                     card->alloc_pcm_channel(card);
1763                                 if (!dmabuf->write_channel)
1764                                         return -EBUSY;
1765                         }
1766                 }
1767         }
1768
1769         if (codec_independent_spdif_locked > 0) {
1770                 if (!dmabuf->ready && (ret = prog_dmabuf(state, 2)))
1771                         return ret;
1772         } else {
1773                 if (controller_independent_spdif_locked > 0) {
1774                         if (!dmabuf->ready && (ret = prog_dmabuf(state, 3)))
1775                                 return ret;
1776                 } else {
1777
1778                         if (!dmabuf->ready && (ret = prog_dmabuf(state, 0)))
1779                                 return ret;
1780                 }
1781         }
1782         if (!access_ok(VERIFY_READ, buffer, count))
1783                 return -EFAULT;
1784         ret = 0;
1785         add_wait_queue(&dmabuf->wait, &waita);
1786         while (count > 0) {
1787                 set_current_state(TASK_INTERRUPTIBLE);
1788                 spin_lock_irqsave(&state->card->lock, flags);
1789                 if (PM_SUSPENDED(card)) {
1790                         spin_unlock_irqrestore(&card->lock, flags);
1791                         schedule();
1792                         if (signal_pending(current)) {
1793                                 if (!ret)
1794                                         ret = -EAGAIN;
1795                                 break;
1796                         }
1797                         continue;
1798                 }
1799
1800                 swptr = dmabuf->swptr;
1801                 cnt = ali_get_free_write_space(state);
1802                 /* Bound the maximum size to how much we can copy to the
1803                  * dma buffer before we hit the end.  If we have more to
1804                  * copy then it will get done in a second pass of this
1805                  * loop starting from the beginning of the buffer.
1806                  */
1807                 if (cnt > (dmabuf->dmasize - swptr))
1808                         cnt = dmabuf->dmasize - swptr;
1809                 spin_unlock_irqrestore(&state->card->lock, flags);
1810 #ifdef DEBUG2
1811                 printk(KERN_INFO
1812                        "ali_audio: ali_write: %d bytes available space\n",
1813                        cnt);
1814 #endif
1815                 if (cnt > count)
1816                         cnt = count;
1817                 /* Lop off the last two bits to force the code to always
1818                  * write in full samples.  This keeps software that sets
1819                  * O_NONBLOCK but doesn't check the return value of the
1820                  * write call from getting things out of state where they
1821                  * think a full 4 byte sample was written when really only
1822                  * a portion was, resulting in odd sound and stereo
1823                  * hysteresis.
1824                  */
1825                 cnt &= ~0x3;
1826                 if (cnt <= 0) {
1827                         unsigned long tmo;
1828                         // There is data waiting to be played
1829                         /*
1830                          * Force the trigger setting since we would
1831                          * deadlock with it set any other way
1832                          */
1833                         if (codec_independent_spdif_locked > 0) {
1834                                 dmabuf->trigger = SPDIF_ENABLE_OUTPUT;
1835                                 ali_update_lvi(state, 2);
1836                         } else {
1837                                 if (controller_independent_spdif_locked > 0) {
1838                                         dmabuf->trigger = SPDIF_ENABLE_OUTPUT;
1839                                         ali_update_lvi(state, 3);
1840                                 } else {
1841
1842                                         dmabuf->trigger = PCM_ENABLE_OUTPUT;
1843                                         ali_update_lvi(state, 0);
1844                                 }
1845                         }
1846                         if (file->f_flags & O_NONBLOCK) {
1847                                 if (!ret)
1848                                         ret = -EAGAIN;
1849                                 goto ret;
1850                         }
1851                         /* Not strictly correct but works */
1852                         tmo = (dmabuf->dmasize * HZ * 2) / (dmabuf->rate * 4);
1853                         /* There are two situations when sleep_on_timeout returns, one is when
1854                            the interrupt is serviced correctly and the process is waked up by
1855                            ISR ON TIME. Another is when timeout is expired, which means that
1856                            either interrupt is NOT serviced correctly (pending interrupt) or it
1857                            is TOO LATE for the process to be scheduled to run (scheduler latency)
1858                            which results in a (potential) buffer underrun. And worse, there is
1859                            NOTHING we can do to prevent it. */
1860
1861                         /* FIXME - do timeout handling here !! */
1862                         schedule_timeout(tmo >= 2 ? tmo : 2);
1863
1864                         if (signal_pending(current)) {
1865                                 if (!ret)
1866                                         ret = -ERESTARTSYS;
1867                                 goto ret;
1868                         }
1869                         continue;
1870                 }
1871                 if (copy_from_user(dmabuf->rawbuf + swptr, buffer, cnt)) {
1872                         if (!ret)
1873                                 ret = -EFAULT;
1874                         goto ret;
1875                 }
1876
1877                 swptr = (swptr + cnt) % dmabuf->dmasize;
1878                 spin_lock_irqsave(&state->card->lock, flags);
1879                 if (PM_SUSPENDED(card)) {
1880                         spin_unlock_irqrestore(&card->lock, flags);
1881                         continue;
1882                 }
1883
1884                 dmabuf->swptr = swptr;
1885                 dmabuf->count += cnt;
1886                 count -= cnt;
1887                 buffer += cnt;
1888                 ret += cnt;
1889                 spin_unlock_irqrestore(&state->card->lock, flags);
1890         }
1891         if (swptr % dmabuf->fragsize) {
1892                 x = dmabuf->fragsize - (swptr % dmabuf->fragsize);
1893                 memset(dmabuf->rawbuf + swptr, '\0', x);
1894         }
1895 ret:
1896         if (codec_independent_spdif_locked > 0) {
1897                 ali_update_lvi(state, 2);
1898         } else {
1899                 if (controller_independent_spdif_locked > 0) {
1900                         ali_update_lvi(state, 3);
1901                 } else {
1902                         ali_update_lvi(state, 0);
1903                 }
1904         }
1905         set_current_state(TASK_RUNNING);
1906         remove_wait_queue(&dmabuf->wait, &waita);
1907         return ret;
1908 }
1909
1910 /* No kernel lock - we have our own spinlock */
1911 static unsigned int ali_poll(struct file *file, struct poll_table_struct
1912                              *wait)
1913 {
1914         struct ali_state *state = (struct ali_state *) file->private_data;
1915         struct dmabuf *dmabuf = &state->dmabuf;
1916         unsigned long flags;
1917         unsigned int mask = 0;
1918         if (!dmabuf->ready)
1919                 return 0;
1920         poll_wait(file, &dmabuf->wait, wait);
1921         spin_lock_irqsave(&state->card->lock, flags);
1922         ali_update_ptr(state);
1923         if (file->f_mode & FMODE_READ && dmabuf->enable & ADC_RUNNING) {
1924                 if (dmabuf->count >= (signed) dmabuf->fragsize)
1925                         mask |= POLLIN | POLLRDNORM;
1926         }
1927         if (file->f_mode & FMODE_WRITE  && (dmabuf->enable & (DAC_RUNNING|CODEC_SPDIFOUT_RUNNING|CONTROLLER_SPDIFOUT_RUNNING))) {
1928                 if ((signed) dmabuf->dmasize >= dmabuf->count + (signed) dmabuf->fragsize)
1929                         mask |= POLLOUT | POLLWRNORM;
1930         }
1931         spin_unlock_irqrestore(&state->card->lock, flags);
1932         return mask;
1933 }
1934
1935 static int ali_mmap(struct file *file, struct vm_area_struct *vma)
1936 {
1937         struct ali_state *state = (struct ali_state *) file->private_data;
1938         struct dmabuf *dmabuf = &state->dmabuf;
1939         int ret = -EINVAL;
1940         unsigned long size;
1941         lock_kernel();
1942         if (vma->vm_flags & VM_WRITE) {
1943                 if (!dmabuf->write_channel && (dmabuf->write_channel = state->card->alloc_pcm_channel(state->card)) == NULL) {
1944                         ret = -EBUSY;
1945                         goto out;
1946                 }
1947         }
1948         if (vma->vm_flags & VM_READ) {
1949                 if (!dmabuf->read_channel && (dmabuf->read_channel = state->card->alloc_rec_pcm_channel(state->card)) == NULL) {
1950                         ret = -EBUSY;
1951                         goto out;
1952                 }
1953         }
1954         if ((ret = prog_dmabuf(state, 0)) != 0)
1955                 goto out;
1956         ret = -EINVAL;
1957         if (vma->vm_pgoff != 0)
1958                 goto out;
1959         size = vma->vm_end - vma->vm_start;
1960         if (size > (PAGE_SIZE << dmabuf->buforder))
1961                 goto out;
1962         ret = -EAGAIN;
1963         if (remap_page_range(vma, vma->vm_start, virt_to_phys(dmabuf->rawbuf), size, vma->vm_page_prot))
1964                 goto out;
1965         dmabuf->mapped = 1;
1966         dmabuf->trigger = 0;
1967         ret = 0;
1968 out:
1969         unlock_kernel();
1970         return ret;
1971 }
1972
1973 static int ali_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
1974 {
1975         struct ali_state *state = (struct ali_state *) file->private_data;
1976         struct ali_channel *c = NULL;
1977         struct dmabuf *dmabuf = &state->dmabuf;
1978         unsigned long flags;
1979         audio_buf_info abinfo;
1980         count_info cinfo;
1981         unsigned int i_scr;
1982         int val = 0, ret;
1983         struct ac97_codec *codec = state->card->ac97_codec[0];
1984         void __user *argp = (void __user *)arg;
1985         int __user *p = argp;
1986
1987 #ifdef DEBUG
1988         printk("ali_audio: ali_ioctl, arg=0x%x, cmd=",
1989                arg ? *p : 0);
1990 #endif
1991         switch (cmd) {
1992         case OSS_GETVERSION:
1993 #ifdef DEBUG
1994                 printk("OSS_GETVERSION\n");
1995 #endif
1996                 return put_user(SOUND_VERSION, p);
1997         case SNDCTL_DSP_RESET:
1998 #ifdef DEBUG
1999                 printk("SNDCTL_DSP_RESET\n");
2000 #endif
2001                 spin_lock_irqsave(&state->card->lock, flags);
2002                 if (dmabuf->enable == DAC_RUNNING) {
2003                         c = dmabuf->write_channel;
2004                         __stop_dac(state);
2005                 }
2006                 if (dmabuf->enable == ADC_RUNNING) {
2007                         c = dmabuf->read_channel;
2008                         __stop_adc(state);
2009                 }
2010                 if (dmabuf->enable == CODEC_SPDIFOUT_RUNNING) {
2011                         c = dmabuf->codec_spdifout_channel;
2012                         __stop_spdifout(state);
2013                 }
2014                 if (dmabuf->enable == CONTROLLER_SPDIFOUT_RUNNING) {
2015                         c = dmabuf->controller_spdifout_channel;
2016                         __stop_spdifout(state);
2017                 }
2018                 if (c != NULL) {
2019                         outb(2, state->card->iobase + c->port + OFF_CR);        /* reset DMA machine */
2020                         outl(virt_to_bus(&c->sg[0]),
2021                              state->card->iobase + c->port + OFF_BDBAR);
2022                         outb(0, state->card->iobase + c->port + OFF_CIV);
2023                         outb(0, state->card->iobase + c->port + OFF_LVI);
2024                 }
2025
2026                 spin_unlock_irqrestore(&state->card->lock, flags);
2027                 synchronize_irq(state->card->pci_dev->irq);
2028                 dmabuf->ready = 0;
2029                 dmabuf->swptr = dmabuf->hwptr = 0;
2030                 dmabuf->count = dmabuf->total_bytes = 0;
2031                 return 0;
2032         case SNDCTL_DSP_SYNC:
2033 #ifdef DEBUG
2034                 printk("SNDCTL_DSP_SYNC\n");
2035 #endif
2036                 if (codec_independent_spdif_locked > 0) {
2037                         if (dmabuf->enable != CODEC_SPDIFOUT_RUNNING
2038                             || file->f_flags & O_NONBLOCK)
2039                                 return 0;
2040                         if ((val = drain_spdifout(state, 1)))
2041                                 return val;
2042                 } else {
2043                         if (controller_independent_spdif_locked > 0) {
2044                                 if (dmabuf->enable !=
2045                                     CONTROLLER_SPDIFOUT_RUNNING
2046                                     || file->f_flags & O_NONBLOCK)
2047                                         return 0;
2048                                 if ((val = drain_spdifout(state, 1)))
2049                                         return val;
2050                         } else {
2051                                 if (dmabuf->enable != DAC_RUNNING
2052                                     || file->f_flags & O_NONBLOCK)
2053                                         return 0;
2054                                 if ((val = drain_dac(state, 1)))
2055                                         return val;
2056                         }
2057                 }
2058                 dmabuf->total_bytes = 0;
2059                 return 0;
2060         case SNDCTL_DSP_SPEED:  /* set smaple rate */
2061 #ifdef DEBUG
2062                 printk("SNDCTL_DSP_SPEED\n");
2063 #endif
2064                 if (get_user(val, p))
2065                         return -EFAULT;
2066                 if (val >= 0) {
2067                         if (file->f_mode & FMODE_WRITE) {
2068                                 if ((state->card->ac97_status & SPDIF_ON)) {    /* S/PDIF Enabled */
2069                                         /* RELTEK ALC650 only support 48000, need to check that */
2070                                         if (ali_valid_spdif_rate(codec, val)) {
2071                                                 if (codec_independent_spdif_locked > 0) {
2072                                                         ali_set_spdif_output(state, -1, 0);
2073                                                         stop_spdifout(state);
2074                                                         dmabuf->ready = 0;
2075                                                         /* I add test codec independent spdif out */
2076                                                         spin_lock_irqsave(&state->card->lock, flags);
2077                                                         ali_set_codecspdifout_rate(state, val); // I modified
2078                                                         spin_unlock_irqrestore(&state->card->lock, flags);
2079                                                         /* Set S/PDIF transmitter rate. */
2080                                                         i_scr = inl(state->card->iobase + ALI_SCR);
2081                                                         if ((i_scr & 0x00300000) == 0x00100000) {
2082                                                                 ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked);
2083                                                         } else {
2084                                                                 if ((i_scr&0x00300000)  == 0x00200000)
2085                                                                 {
2086                                                                         ali_set_spdif_output(state, AC97_EA_SPSA_6_9, codec_independent_spdif_locked);
2087                                                                 } else {
2088                                                                         if ((i_scr & 0x00300000) == 0x00300000) {
2089                                                                                 ali_set_spdif_output(state, AC97_EA_SPSA_10_11, codec_independent_spdif_locked);
2090                                                                         } else {
2091                                                                                 ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked);
2092                                                                         }
2093                                                                 }
2094                                                         }
2095
2096                                                         if (!(state->card->ac97_status & SPDIF_ON)) {
2097                                                                 val = dmabuf->rate;
2098                                                         }
2099                                                 } else {
2100                                                         if (controller_independent_spdif_locked > 0)
2101                                                         {
2102                                                                 stop_spdifout(state);
2103                                                                 dmabuf->ready = 0;
2104                                                                 spin_lock_irqsave(&state->card->lock, flags);
2105                                                                 ali_set_spdifout_rate(state, controller_independent_spdif_locked);
2106                                                                 spin_unlock_irqrestore(&state->card->lock, flags);
2107                                                         } else {
2108                                                                 /* Set DAC rate */
2109                                                                 ali_set_spdif_output(state, -1, 0);
2110                                                                 stop_dac(state);
2111                                                                 dmabuf->ready = 0;
2112                                                                 spin_lock_irqsave(&state->card->lock, flags);
2113                                                                 ali_set_dac_rate(state, val);
2114                                                                 spin_unlock_irqrestore(&state->card->lock, flags);
2115                                                                 /* Set S/PDIF transmitter rate. */
2116                                                                 ali_set_spdif_output(state, AC97_EA_SPSA_3_4, val);
2117                                                                 if (!(state->card->ac97_status & SPDIF_ON))
2118                                                                 {
2119                                                                         val = dmabuf->rate;
2120                                                                 }
2121                                                         }
2122                                                 }
2123                                         } else {        /* Not a valid rate for S/PDIF, ignore it */
2124                                                 val = dmabuf->rate;
2125                                         }
2126                                 } else {
2127                                         stop_dac(state);
2128                                         dmabuf->ready = 0;
2129                                         spin_lock_irqsave(&state->card->lock, flags);
2130                                         ali_set_dac_rate(state, val);
2131                                         spin_unlock_irqrestore(&state->card->lock, flags);
2132                                 }
2133                         }
2134                         if (file->f_mode & FMODE_READ) {
2135                                 stop_adc(state);
2136                                 dmabuf->ready = 0;
2137                                 spin_lock_irqsave(&state->card->lock, flags);
2138                                 ali_set_adc_rate(state, val);
2139                                 spin_unlock_irqrestore(&state->card->lock, flags);
2140                         }
2141                 }
2142                 return put_user(dmabuf->rate, p);
2143         case SNDCTL_DSP_STEREO: /* set stereo or mono channel */
2144 #ifdef DEBUG
2145                 printk("SNDCTL_DSP_STEREO\n");
2146 #endif
2147                 if (dmabuf->enable & DAC_RUNNING) {
2148                         stop_dac(state);
2149                 }
2150                 if (dmabuf->enable & ADC_RUNNING) {
2151                         stop_adc(state);
2152                 }
2153                 if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) {
2154                         stop_spdifout(state);
2155                 }
2156                 if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) {
2157                         stop_spdifout(state);
2158                 }
2159                 return put_user(1, p);
2160         case SNDCTL_DSP_GETBLKSIZE:
2161                 if (file->f_mode & FMODE_WRITE) {
2162                         if (codec_independent_spdif_locked > 0) {
2163                                 if (!dmabuf->ready && (val = prog_dmabuf(state, 2)))
2164                                         return val;
2165                         } else {
2166                                 if (controller_independent_spdif_locked > 0) {
2167                                         if (!dmabuf->ready && (val = prog_dmabuf(state, 3)))
2168                                                 return val;
2169                                 } else {
2170                                         if (!dmabuf->ready && (val = prog_dmabuf(state, 0)))
2171                                                 return val;
2172                                 }
2173                         }
2174                 }
2175
2176                 if (file->f_mode & FMODE_READ) {
2177                         if (!dmabuf->ready && (val = prog_dmabuf(state, 1)))
2178                                 return val;
2179                 }
2180 #ifdef DEBUG
2181                 printk("SNDCTL_DSP_GETBLKSIZE %d\n", dmabuf->userfragsize);
2182 #endif
2183                 return put_user(dmabuf->userfragsize, p);
2184         case SNDCTL_DSP_GETFMTS:        /* Returns a mask of supported sample format */
2185 #ifdef DEBUG
2186                 printk("SNDCTL_DSP_GETFMTS\n");
2187 #endif
2188                 return put_user(AFMT_S16_LE, p);
2189         case SNDCTL_DSP_SETFMT: /* Select sample format */
2190 #ifdef DEBUG
2191                 printk("SNDCTL_DSP_SETFMT\n");
2192 #endif
2193                 return put_user(AFMT_S16_LE, p);
2194         case SNDCTL_DSP_CHANNELS:       // add support 4,6 channel
2195 #ifdef DEBUG
2196                 printk("SNDCTL_DSP_CHANNELS\n");
2197 #endif
2198                 if (get_user(val, p))
2199                         return -EFAULT;
2200                 if (val > 0) {
2201                         if (dmabuf->enable & DAC_RUNNING) {
2202                                 stop_dac(state);
2203                         }
2204                         if (dmabuf->enable & CODEC_SPDIFOUT_RUNNING) {
2205                                 stop_spdifout(state);
2206                         }
2207                         if (dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING) {
2208                                 stop_spdifout(state);
2209                         }
2210                         if (dmabuf->enable & ADC_RUNNING) {
2211                                 stop_adc(state);
2212                         }
2213                 } else {
2214                         return put_user(state->card->channels, p);
2215                 }
2216
2217                 i_scr = inl(state->card->iobase + ALI_SCR);
2218                 /* Current # of channels enabled */
2219                 if (i_scr & 0x00000100)
2220                         ret = 4;
2221                 else if (i_scr & 0x00000200)
2222                         ret = 6;
2223                 else
2224                         ret = 2;
2225                 switch (val) {
2226                 case 2: /* 2 channels is always supported */
2227                         if (codec_independent_spdif_locked > 0) {
2228                                 outl(((i_scr & 0xfffffcff) | 0x00100000), (state->card->iobase + ALI_SCR));
2229                         } else
2230                                 outl((i_scr & 0xfffffcff), (state->card->iobase + ALI_SCR));
2231                         /* Do we need to change mixer settings????  */
2232                         break;
2233                 case 4: /* Supported on some chipsets, better check first */
2234                         if (codec_independent_spdif_locked > 0) {
2235                                 outl(((i_scr & 0xfffffcff) | 0x00000100 | 0x00200000), (state->card->iobase + ALI_SCR));
2236                         } else
2237                                 outl(((i_scr & 0xfffffcff) | 0x00000100), (state->card->iobase + ALI_SCR));
2238                         break;
2239                 case 6: /* Supported on some chipsets, better check first */
2240                         if (codec_independent_spdif_locked > 0) {
2241                                 outl(((i_scr & 0xfffffcff) | 0x00000200 | 0x00008000 | 0x00300000), (state->card->iobase + ALI_SCR));
2242                         } else
2243                                 outl(((i_scr & 0xfffffcff) | 0x00000200 | 0x00008000), (state->card->iobase + ALI_SCR));
2244                         break;
2245                 default:        /* nothing else is ever supported by the chipset */
2246                         val = ret;
2247                         break;
2248                 }
2249                 return put_user(val, p);
2250         case SNDCTL_DSP_POST:   /* the user has sent all data and is notifying us */
2251                 /* we update the swptr to the end of the last sg segment then return */
2252 #ifdef DEBUG
2253                 printk("SNDCTL_DSP_POST\n");
2254 #endif
2255                 if (codec_independent_spdif_locked > 0) {
2256                         if (!dmabuf->ready || (dmabuf->enable != CODEC_SPDIFOUT_RUNNING))
2257                                 return 0;
2258                 } else {
2259                         if (controller_independent_spdif_locked > 0) {
2260                                 if (!dmabuf->ready || (dmabuf->enable != CONTROLLER_SPDIFOUT_RUNNING))
2261                                         return 0;
2262                         } else {
2263                                 if (!dmabuf->ready || (dmabuf->enable != DAC_RUNNING))
2264                                         return 0;
2265                         }
2266                 }
2267                 if ((dmabuf->swptr % dmabuf->fragsize) != 0) {
2268                         val = dmabuf->fragsize - (dmabuf->swptr % dmabuf->fragsize);
2269                         dmabuf->swptr += val;
2270                         dmabuf->count += val;
2271                 }
2272                 return 0;
2273         case SNDCTL_DSP_SUBDIVIDE:
2274                 if (dmabuf->subdivision)
2275                         return -EINVAL;
2276                 if (get_user(val, p))
2277                         return -EFAULT;
2278                 if (val != 1 && val != 2 && val != 4)
2279                         return -EINVAL;
2280 #ifdef DEBUG
2281                 printk("SNDCTL_DSP_SUBDIVIDE %d\n", val);
2282 #endif
2283                 dmabuf->subdivision = val;
2284                 dmabuf->ready = 0;
2285                 return 0;
2286         case SNDCTL_DSP_SETFRAGMENT:
2287                 if (get_user(val, p))
2288                         return -EFAULT;
2289                 dmabuf->ossfragsize = 1 << (val & 0xffff);
2290                 dmabuf->ossmaxfrags = (val >> 16) & 0xffff;
2291                 if (!dmabuf->ossfragsize || !dmabuf->ossmaxfrags)
2292                         return -EINVAL;
2293                 /*
2294                  * Bound the frag size into our allowed range of 256 - 4096
2295                  */
2296                 if (dmabuf->ossfragsize < 256)
2297                         dmabuf->ossfragsize = 256;
2298                 else if (dmabuf->ossfragsize > 4096)
2299                         dmabuf->ossfragsize = 4096;
2300                 /*
2301                  * The numfrags could be something reasonable, or it could
2302                  * be 0xffff meaning "Give me as much as possible".  So,
2303                  * we check the numfrags * fragsize doesn't exceed our
2304                  * 64k buffer limit, nor is it less than our 8k minimum.
2305                  * If it fails either one of these checks, then adjust the
2306                  * number of fragments, not the size of them.  It's OK if
2307                  * our number of fragments doesn't equal 32 or anything
2308                  * like our hardware based number now since we are using
2309                  * a different frag count for the hardware.  Before we get
2310                  * into this though, bound the maxfrags to avoid overflow
2311                  * issues.  A reasonable bound would be 64k / 256 since our
2312                  * maximum buffer size is 64k and our minimum frag size is
2313                  * 256.  On the other end, our minimum buffer size is 8k and
2314                  * our maximum frag size is 4k, so the lower bound should
2315                  * be 2.
2316                  */
2317                 if (dmabuf->ossmaxfrags > 256)
2318                         dmabuf->ossmaxfrags = 256;
2319                 else if (dmabuf->ossmaxfrags < 2)
2320                         dmabuf->ossmaxfrags = 2;
2321                 val = dmabuf->ossfragsize * dmabuf->ossmaxfrags;
2322                 while (val < 8192) {
2323                         val <<= 1;
2324                         dmabuf->ossmaxfrags <<= 1;
2325                 }
2326                 while (val > 65536) {
2327                         val >>= 1;
2328                         dmabuf->ossmaxfrags >>= 1;
2329                 }
2330                 dmabuf->ready = 0;
2331 #ifdef DEBUG
2332                 printk("SNDCTL_DSP_SETFRAGMENT 0x%x, %d, %d\n", val,
2333                        dmabuf->ossfragsize, dmabuf->ossmaxfrags);
2334 #endif
2335                 return 0;
2336         case SNDCTL_DSP_GETOSPACE:
2337                 if (!(file->f_mode & FMODE_WRITE))
2338                         return -EINVAL;
2339                 if (codec_independent_spdif_locked > 0) {
2340                         if (!dmabuf->ready && (val = prog_dmabuf(state, 2)) != 0)
2341                                 return val;
2342                 } else {
2343                         if (controller_independent_spdif_locked > 0) {
2344                                 if (!dmabuf->ready && (val = prog_dmabuf(state, 3)) != 0)
2345                                         return val;
2346                         } else {
2347                                 if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
2348                                         return val;
2349                         }
2350                 }
2351                 spin_lock_irqsave(&state->card->lock, flags);
2352                 ali_update_ptr(state);
2353                 abinfo.fragsize = dmabuf->userfragsize;
2354                 abinfo.fragstotal = dmabuf->userfrags;
2355                 if (dmabuf->mapped)
2356                         abinfo.bytes = dmabuf->dmasize;
2357                 else
2358                         abinfo.bytes = ali_get_free_write_space(state);
2359                 abinfo.fragments = abinfo.bytes / dmabuf->userfragsize;
2360                 spin_unlock_irqrestore(&state->card->lock, flags);
2361 #if defined(DEBUG) || defined(DEBUG_MMAP)
2362                 printk("SNDCTL_DSP_GETOSPACE %d, %d, %d, %d\n",
2363                        abinfo.bytes, abinfo.fragsize, abinfo.fragments,
2364                        abinfo.fragstotal);
2365 #endif
2366                 return copy_to_user(argp, &abinfo,
2367                                     sizeof(abinfo)) ? -EFAULT : 0;
2368         case SNDCTL_DSP_GETOPTR:
2369                 if (!(file->f_mode & FMODE_WRITE))
2370                         return -EINVAL;
2371                 if (codec_independent_spdif_locked > 0) {
2372                         if (!dmabuf->ready && (val = prog_dmabuf(state, 2)) != 0)
2373                                 return val;
2374                 } else {
2375                         if (controller_independent_spdif_locked > 0) {
2376                                 if (!dmabuf->ready && (val = prog_dmabuf(state, 3)) != 0)
2377                                         return val;
2378                         } else {
2379                                 if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
2380                                         return val;
2381                         }
2382                 }
2383                 spin_lock_irqsave(&state->card->lock, flags);
2384                 val = ali_get_free_write_space(state);
2385                 cinfo.bytes = dmabuf->total_bytes;
2386                 cinfo.ptr = dmabuf->hwptr;
2387                 cinfo.blocks = val / dmabuf->userfragsize;
2388                 if (codec_independent_spdif_locked > 0) {
2389                         if (dmabuf->mapped && (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)) {
2390                                 dmabuf->count += val;
2391                                 dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
2392                                 __ali_update_lvi(state, 2);
2393                         }
2394                 } else {
2395                         if (controller_independent_spdif_locked > 0) {
2396                                 if (dmabuf->mapped && (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)) {
2397                                         dmabuf->count += val;
2398                                         dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
2399                                         __ali_update_lvi(state, 3);
2400                                 }
2401                         } else {
2402                                 if (dmabuf->mapped && (dmabuf->trigger & PCM_ENABLE_OUTPUT)) {
2403                                         dmabuf->count += val;
2404                                         dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
2405                                         __ali_update_lvi(state, 0);
2406                                 }
2407                         }
2408                 }
2409                 spin_unlock_irqrestore(&state->card->lock, flags);
2410 #if defined(DEBUG) || defined(DEBUG_MMAP)
2411                 printk("SNDCTL_DSP_GETOPTR %d, %d, %d, %d\n", cinfo.bytes,
2412                        cinfo.blocks, cinfo.ptr, dmabuf->count);
2413 #endif
2414                 return copy_to_user(argp, &cinfo, sizeof(cinfo))? -EFAULT : 0;
2415         case SNDCTL_DSP_GETISPACE:
2416                 if (!(file->f_mode & FMODE_READ))
2417                         return -EINVAL;
2418                 if (!dmabuf->ready && (val = prog_dmabuf(state, 1)) != 0)
2419                         return val;
2420                 spin_lock_irqsave(&state->card->lock, flags);
2421                 abinfo.bytes = ali_get_available_read_data(state);
2422                 abinfo.fragsize = dmabuf->userfragsize;
2423                 abinfo.fragstotal = dmabuf->userfrags;
2424                 abinfo.fragments = abinfo.bytes / dmabuf->userfragsize;
2425                 spin_unlock_irqrestore(&state->card->lock, flags);
2426 #if defined(DEBUG) || defined(DEBUG_MMAP)
2427                 printk("SNDCTL_DSP_GETISPACE %d, %d, %d, %d\n",
2428                        abinfo.bytes, abinfo.fragsize, abinfo.fragments,
2429                        abinfo.fragstotal);
2430 #endif
2431                 return copy_to_user(argp, &abinfo,
2432                                     sizeof(abinfo)) ? -EFAULT : 0;
2433         case SNDCTL_DSP_GETIPTR:
2434                 if (!(file->f_mode & FMODE_READ))
2435                         return -EINVAL;
2436                 if (!dmabuf->ready && (val = prog_dmabuf(state, 0)) != 0)
2437                         return val;
2438                 spin_lock_irqsave(&state->card->lock, flags);
2439                 val = ali_get_available_read_data(state);
2440                 cinfo.bytes = dmabuf->total_bytes;
2441                 cinfo.blocks = val / dmabuf->userfragsize;
2442                 cinfo.ptr = dmabuf->hwptr;
2443                 if (dmabuf->mapped && (dmabuf->trigger & PCM_ENABLE_INPUT)) {
2444                         dmabuf->count -= val;
2445                         dmabuf->swptr = (dmabuf->swptr + val) % dmabuf->dmasize;
2446                         __ali_update_lvi(state, 1);
2447                 }
2448                 spin_unlock_irqrestore(&state->card->lock, flags);
2449 #if defined(DEBUG) || defined(DEBUG_MMAP)
2450                 printk("SNDCTL_DSP_GETIPTR %d, %d, %d, %d\n", cinfo.bytes,
2451                        cinfo.blocks, cinfo.ptr, dmabuf->count);
2452 #endif
2453                 return copy_to_user(argp, &cinfo, sizeof(cinfo))? -EFAULT: 0;
2454         case SNDCTL_DSP_NONBLOCK:
2455 #ifdef DEBUG
2456                 printk("SNDCTL_DSP_NONBLOCK\n");
2457 #endif
2458                 file->f_flags |= O_NONBLOCK;
2459                 return 0;
2460         case SNDCTL_DSP_GETCAPS:
2461 #ifdef DEBUG
2462                 printk("SNDCTL_DSP_GETCAPS\n");
2463 #endif
2464                 return put_user(DSP_CAP_REALTIME | DSP_CAP_TRIGGER |
2465                                 DSP_CAP_MMAP | DSP_CAP_BIND, p);
2466         case SNDCTL_DSP_GETTRIGGER:
2467                 val = 0;
2468 #ifdef DEBUG
2469                 printk("SNDCTL_DSP_GETTRIGGER 0x%x\n", dmabuf->trigger);
2470 #endif
2471                 return put_user(dmabuf->trigger, p);
2472         case SNDCTL_DSP_SETTRIGGER:
2473                 if (get_user(val, p))
2474                         return -EFAULT;
2475 #if defined(DEBUG) || defined(DEBUG_MMAP)
2476                 printk("SNDCTL_DSP_SETTRIGGER 0x%x\n", val);
2477 #endif
2478                 if (!(val & PCM_ENABLE_INPUT) && dmabuf->enable == ADC_RUNNING) {
2479                         stop_adc(state);
2480                 }
2481                 if (!(val & PCM_ENABLE_OUTPUT) && dmabuf->enable == DAC_RUNNING) {
2482                         stop_dac(state);
2483                 }
2484                 if (!(val & SPDIF_ENABLE_OUTPUT) && dmabuf->enable == CODEC_SPDIFOUT_RUNNING) {
2485                         stop_spdifout(state);
2486                 }
2487                 if (!(val & SPDIF_ENABLE_OUTPUT) && dmabuf->enable == CONTROLLER_SPDIFOUT_RUNNING) {
2488                         stop_spdifout(state);
2489                 }
2490                 dmabuf->trigger = val;
2491                 if (val & PCM_ENABLE_OUTPUT && !(dmabuf->enable & DAC_RUNNING)) {
2492                         if (!dmabuf->write_channel) {
2493                                 dmabuf->ready = 0;
2494                                 dmabuf->write_channel = state->card->alloc_pcm_channel(state->card);
2495                                 if (!dmabuf->write_channel)
2496                                         return -EBUSY;
2497                         }
2498                         if (!dmabuf->ready && (ret = prog_dmabuf(state, 0)))
2499                                 return ret;
2500                         if (dmabuf->mapped) {
2501                                 spin_lock_irqsave(&state->card->lock, flags);
2502                                 ali_update_ptr(state);
2503                                 dmabuf->count = 0;
2504                                 dmabuf->swptr = dmabuf->hwptr;
2505                                 dmabuf->count = ali_get_free_write_space(state);
2506                                 dmabuf->swptr = (dmabuf->swptr + dmabuf->count) % dmabuf->dmasize;
2507                                 __ali_update_lvi(state, 0);
2508                                 spin_unlock_irqrestore(&state->card->lock,
2509                                                        flags);
2510                         } else
2511                                 start_dac(state);
2512                 }
2513                 if (val & SPDIF_ENABLE_OUTPUT && !(dmabuf->enable & CODEC_SPDIFOUT_RUNNING)) {
2514                         if (!dmabuf->codec_spdifout_channel) {
2515                                 dmabuf->ready = 0;
2516                                 dmabuf->codec_spdifout_channel = state->card->alloc_codec_spdifout_channel(state->card);
2517                                 if (!dmabuf->codec_spdifout_channel)
2518                                         return -EBUSY;
2519                         }
2520                         if (!dmabuf->ready && (ret = prog_dmabuf(state, 2)))
2521                                 return ret;
2522                         if (dmabuf->mapped) {
2523                                 spin_lock_irqsave(&state->card->lock, flags);
2524                                 ali_update_ptr(state);
2525                                 dmabuf->count = 0;
2526                                 dmabuf->swptr = dmabuf->hwptr;
2527                                 dmabuf->count = ali_get_free_write_space(state);
2528                                 dmabuf->swptr = (dmabuf->swptr + dmabuf->count) % dmabuf->dmasize;
2529                                 __ali_update_lvi(state, 2);
2530                                 spin_unlock_irqrestore(&state->card->lock,
2531                                                        flags);
2532                         } else
2533                                 start_spdifout(state);
2534                 }
2535                 if (val & SPDIF_ENABLE_OUTPUT && !(dmabuf->enable & CONTROLLER_SPDIFOUT_RUNNING)) {
2536                         if (!dmabuf->controller_spdifout_channel) {
2537                                 dmabuf->ready = 0;
2538                                 dmabuf->controller_spdifout_channel = state->card->alloc_controller_spdifout_channel(state->card);
2539                                 if (!dmabuf->controller_spdifout_channel)
2540                                         return -EBUSY;
2541                         }
2542                         if (!dmabuf->ready && (ret = prog_dmabuf(state, 3)))
2543                                 return ret;
2544                         if (dmabuf->mapped) {
2545                                 spin_lock_irqsave(&state->card->lock, flags);
2546                                 ali_update_ptr(state);
2547                                 dmabuf->count = 0;
2548                                 dmabuf->swptr = dmabuf->hwptr;
2549                                 dmabuf->count = ali_get_free_write_space(state);
2550                                 dmabuf->swptr = (dmabuf->swptr + dmabuf->count) % dmabuf->dmasize;
2551                                 __ali_update_lvi(state, 3);
2552                                 spin_unlock_irqrestore(&state->card->lock, flags);
2553                         } else
2554                                 start_spdifout(state);
2555                 }
2556                 if (val & PCM_ENABLE_INPUT && !(dmabuf->enable & ADC_RUNNING)) {
2557                         if (!dmabuf->read_channel) {
2558                                 dmabuf->ready = 0;
2559                                 dmabuf->read_channel = state->card->alloc_rec_pcm_channel(state->card);
2560                                 if (!dmabuf->read_channel)
2561                                         return -EBUSY;
2562                         }
2563                         if (!dmabuf->ready && (ret = prog_dmabuf(state, 1)))
2564                                 return ret;
2565                         if (dmabuf->mapped) {
2566                                 spin_lock_irqsave(&state->card->lock,
2567                                                   flags);
2568                                 ali_update_ptr(state);
2569                                 dmabuf->swptr = dmabuf->hwptr;
2570                                 dmabuf->count = 0;
2571                                 spin_unlock_irqrestore(&state->card->lock, flags);
2572                         }
2573                         ali_update_lvi(state, 1);
2574                         start_adc(state);
2575                 }
2576                 return 0;
2577         case SNDCTL_DSP_SETDUPLEX:
2578 #ifdef DEBUG
2579                 printk("SNDCTL_DSP_SETDUPLEX\n");
2580 #endif
2581                 return -EINVAL;
2582         case SNDCTL_DSP_GETODELAY:
2583                 if (!(file->f_mode & FMODE_WRITE))
2584                         return -EINVAL;
2585                 spin_lock_irqsave(&state->card->lock, flags);
2586                 ali_update_ptr(state);
2587                 val = dmabuf->count;
2588                 spin_unlock_irqrestore(&state->card->lock, flags);
2589 #ifdef DEBUG
2590                 printk("SNDCTL_DSP_GETODELAY %d\n", dmabuf->count);
2591 #endif
2592                 return put_user(val, p);
2593         case SOUND_PCM_READ_RATE:
2594 #ifdef DEBUG
2595                 printk("SOUND_PCM_READ_RATE %d\n", dmabuf->rate);
2596 #endif
2597                 return put_user(dmabuf->rate, p);
2598         case SOUND_PCM_READ_CHANNELS:
2599 #ifdef DEBUG
2600                 printk("SOUND_PCM_READ_CHANNELS\n");
2601 #endif
2602                 return put_user(2, p);
2603         case SOUND_PCM_READ_BITS:
2604 #ifdef DEBUG
2605                 printk("SOUND_PCM_READ_BITS\n");
2606 #endif
2607                 return put_user(AFMT_S16_LE, p);
2608         case SNDCTL_DSP_SETSPDIF:       /* Set S/PDIF Control register */
2609 #ifdef DEBUG
2610                 printk("SNDCTL_DSP_SETSPDIF\n");
2611 #endif
2612                 if (get_user(val, p))
2613                         return -EFAULT;
2614                 /* Check to make sure the codec supports S/PDIF transmitter */
2615                 if ((state->card->ac97_features & 4)) {
2616                         /* mask out the transmitter speed bits so the user can't set them */
2617                         val &= ~0x3000;
2618                         /* Add the current transmitter speed bits to the passed value */
2619                         ret = ali_ac97_get(codec, AC97_SPDIF_CONTROL);
2620                         val |= (ret & 0x3000);
2621                         ali_ac97_set(codec, AC97_SPDIF_CONTROL, val);
2622                         if (ali_ac97_get(codec, AC97_SPDIF_CONTROL) != val) {
2623                                 printk(KERN_ERR "ali_audio: Unable to set S/PDIF configuration to 0x%04x.\n", val);
2624                                 return -EFAULT;
2625                         }
2626                 }
2627 #ifdef DEBUG
2628                 else
2629                         printk(KERN_WARNING "ali_audio: S/PDIF transmitter not avalible.\n");
2630 #endif
2631                 return put_user(val, p);
2632         case SNDCTL_DSP_GETSPDIF:       /* Get S/PDIF Control register */
2633 #ifdef DEBUG
2634                 printk("SNDCTL_DSP_GETSPDIF\n");
2635 #endif
2636                 if (get_user(val, p))
2637                         return -EFAULT;
2638                 /* Check to make sure the codec supports S/PDIF transmitter */
2639                 if (!(state->card->ac97_features & 4)) {
2640 #ifdef DEBUG
2641                         printk(KERN_WARNING "ali_audio: S/PDIF transmitter not avalible.\n");
2642 #endif
2643                         val = 0;
2644                 } else {
2645                         val = ali_ac97_get(codec, AC97_SPDIF_CONTROL);
2646                 }
2647
2648                 return put_user(val, p);
2649 //end add support spdif out
2650 //add support 4,6 channel
2651         case SNDCTL_DSP_GETCHANNELMASK:
2652 #ifdef DEBUG
2653                 printk("SNDCTL_DSP_GETCHANNELMASK\n");
2654 #endif
2655                 if (get_user(val, p))
2656                         return -EFAULT;
2657                 /* Based on AC'97 DAC support, not ICH hardware */
2658                 val = DSP_BIND_FRONT;
2659                 if (state->card->ac97_features & 0x0004)
2660                         val |= DSP_BIND_SPDIF;
2661                 if (state->card->ac97_features & 0x0080)
2662                         val |= DSP_BIND_SURR;
2663                 if (state->card->ac97_features & 0x0140)
2664                         val |= DSP_BIND_CENTER_LFE;
2665                 return put_user(val, p);
2666         case SNDCTL_DSP_BIND_CHANNEL:
2667 #ifdef DEBUG
2668                 printk("SNDCTL_DSP_BIND_CHANNEL\n");
2669 #endif
2670                 if (get_user(val, p))
2671                         return -EFAULT;
2672                 if (val == DSP_BIND_QUERY) {
2673                         val = DSP_BIND_FRONT;   /* Always report this as being enabled */
2674                         if (state->card->ac97_status & SPDIF_ON)
2675                                 val |= DSP_BIND_SPDIF;
2676                         else {
2677                                 if (state->card->ac97_status & SURR_ON)
2678                                         val |= DSP_BIND_SURR;
2679                                 if (state->card->
2680                                     ac97_status & CENTER_LFE_ON)
2681                                         val |= DSP_BIND_CENTER_LFE;
2682                         }
2683                 } else {        /* Not a query, set it */
2684                         if (!(file->f_mode & FMODE_WRITE))
2685                                 return -EINVAL;
2686                         if (dmabuf->enable == DAC_RUNNING) {
2687                                 stop_dac(state);
2688                         }
2689                         if (val & DSP_BIND_SPDIF) {     /* Turn on SPDIF */
2690                                 /*  Ok, this should probably define what slots
2691                                  *  to use. For now, we'll only set it to the
2692                                  *  defaults:
2693                                  *
2694                                  *   non multichannel codec maps to slots 3&4
2695                                  *   2 channel codec maps to slots 7&8
2696                                  *   4 channel codec maps to slots 6&9
2697                                  *   6 channel codec maps to slots 10&11
2698                                  *
2699                                  *  there should be some way for the app to
2700                                  *  select the slot assignment.
2701                                  */
2702                                 i_scr = inl(state->card->iobase + ALI_SCR);
2703                                 if (codec_independent_spdif_locked > 0) {
2704
2705                                         if ((i_scr & 0x00300000) == 0x00100000) {
2706                                                 ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked);
2707                                         } else {
2708                                                 if ((i_scr & 0x00300000) == 0x00200000) {
2709                                                         ali_set_spdif_output(state, AC97_EA_SPSA_6_9, codec_independent_spdif_locked);
2710                                                 } else {
2711                                                         if ((i_scr & 0x00300000) == 0x00300000) {
2712                                                                 ali_set_spdif_output(state, AC97_EA_SPSA_10_11, codec_independent_spdif_locked);
2713                                                         }
2714                                                 }
2715                                         }
2716                                 } else {        /* codec spdif out (pcm out share ) */
2717                                         ali_set_spdif_output(state, AC97_EA_SPSA_3_4, dmabuf->rate);    //I do not modify
2718                                 }
2719
2720                                 if (!(state->card->ac97_status & SPDIF_ON))
2721                                         val &= ~DSP_BIND_SPDIF;
2722                         } else {
2723                                 int mask;
2724                                 int channels;
2725                                 /* Turn off S/PDIF if it was on */
2726                                 if (state->card->ac97_status & SPDIF_ON)
2727                                         ali_set_spdif_output(state, -1, 0);
2728                                 mask =
2729                                     val & (DSP_BIND_FRONT | DSP_BIND_SURR |
2730                                            DSP_BIND_CENTER_LFE);
2731                                 switch (mask) {
2732                                 case DSP_BIND_FRONT:
2733                                         channels = 2;
2734                                         break;
2735                                 case DSP_BIND_FRONT | DSP_BIND_SURR:
2736                                         channels = 4;
2737                                         break;
2738                                 case DSP_BIND_FRONT | DSP_BIND_SURR | DSP_BIND_CENTER_LFE:
2739                                         channels = 6;
2740                                         break;
2741                                 default:
2742                                         val = DSP_BIND_FRONT;
2743                                         channels = 2;
2744                                         break;
2745                                 }
2746                                 ali_set_dac_channels(state, channels);
2747                                 /* check that they really got turned on */
2748                                 if (!state->card->ac97_status & SURR_ON)
2749                                         val &= ~DSP_BIND_SURR;
2750                                 if (!state->card->
2751                                     ac97_status & CENTER_LFE_ON)
2752                                         val &= ~DSP_BIND_CENTER_LFE;
2753                         }
2754                 }
2755                 return put_user(val, p);
2756         case SNDCTL_DSP_MAPINBUF:
2757         case SNDCTL_DSP_MAPOUTBUF:
2758         case SNDCTL_DSP_SETSYNCRO:
2759         case SOUND_PCM_WRITE_FILTER:
2760         case SOUND_PCM_READ_FILTER:
2761                 return -EINVAL;
2762         }
2763         return -EINVAL;
2764 }
2765
2766 static int ali_open(struct inode *inode, struct file *file)
2767 {
2768         int i = 0;
2769         struct ali_card *card = devs;
2770         struct ali_state *state = NULL;
2771         struct dmabuf *dmabuf = NULL;
2772         unsigned int i_scr;
2773
2774         /* find an available virtual channel (instance of /dev/dsp) */
2775
2776         while (card != NULL) {
2777
2778                 /*
2779                  * If we are initializing and then fail, card could go
2780                  * away unuexpectedly while we are in the for() loop.
2781                  * So, check for card on each iteration before we check
2782                  * for card->initializing to avoid a possible oops.
2783                  * This usually only matters for times when the driver is
2784                  * autoloaded by kmod.
2785                  */
2786                 for (i = 0; i < 50 && card && card->initializing; i++) {
2787                         set_current_state(TASK_UNINTERRUPTIBLE);
2788                         schedule_timeout(HZ / 20);
2789                 }
2790
2791                 for (i = 0; i < NR_HW_CH && card && !card->initializing; i++) {
2792                         if (card->states[i] == NULL) {
2793                                 state = card->states[i] = (struct ali_state *) kmalloc(sizeof(struct ali_state), GFP_KERNEL);
2794                                 if (state == NULL)
2795                                         return -ENOMEM;
2796                                 memset(state, 0, sizeof(struct ali_state));
2797                                 dmabuf = &state->dmabuf;
2798                                 goto found_virt;
2799                         }
2800                 }
2801                 card = card->next;
2802         }
2803
2804         /* no more virtual channel avaiable */
2805         if (!state)
2806                 return -ENODEV;
2807 found_virt:
2808         /* initialize the virtual channel */
2809
2810         state->virt = i;
2811         state->card = card;
2812         state->magic = ALI5455_STATE_MAGIC;
2813         init_waitqueue_head(&dmabuf->wait);
2814         init_MUTEX(&state->open_sem);
2815         file->private_data = state;
2816         dmabuf->trigger = 0;
2817         /* allocate hardware channels */
2818         if (file->f_mode & FMODE_READ) {
2819                 if ((dmabuf->read_channel =
2820                      card->alloc_rec_pcm_channel(card)) == NULL) {
2821                         kfree(card->states[i]);
2822                         card->states[i] = NULL;
2823                         return -EBUSY;
2824                 }
2825                 dmabuf->trigger |= PCM_ENABLE_INPUT;
2826                 ali_set_adc_rate(state, 8000);
2827         }
2828         if (file->f_mode & FMODE_WRITE) {
2829                 if (codec_independent_spdif_locked > 0) {
2830                         if ((dmabuf->codec_spdifout_channel = card->alloc_codec_spdifout_channel(card)) == NULL) {
2831                                 kfree(card->states[i]);
2832                                 card->states[i] = NULL;
2833                                 return -EBUSY;
2834                         }
2835                         dmabuf->trigger |= SPDIF_ENABLE_OUTPUT;
2836                         ali_set_codecspdifout_rate(state, codec_independent_spdif_locked);      //It must add
2837                         i_scr = inl(state->card->iobase + ALI_SCR);
2838                         if ((i_scr & 0x00300000) == 0x00100000) {
2839                                 ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked);
2840                         } else {
2841                                 if ((i_scr & 0x00300000) == 0x00200000) {
2842                                         ali_set_spdif_output(state, AC97_EA_SPSA_6_9, codec_independent_spdif_locked);
2843                                 } else {
2844                                         if ((i_scr & 0x00300000) == 0x00300000) {
2845                                                 ali_set_spdif_output(state, AC97_EA_SPSA_10_11, codec_independent_spdif_locked);
2846                                         } else {
2847                                                 ali_set_spdif_output(state, AC97_EA_SPSA_7_8, codec_independent_spdif_locked);
2848                                         }
2849                                 }
2850
2851                         }
2852                 } else {
2853                         if (controller_independent_spdif_locked > 0) {
2854                                 if ((dmabuf->controller_spdifout_channel = card->alloc_controller_spdifout_channel(card)) == NULL) {
2855                                         kfree(card->states[i]);
2856                                         card->states[i] = NULL;
2857                                         return -EBUSY;
2858                                 }
2859                                 dmabuf->trigger |= SPDIF_ENABLE_OUTPUT;
2860                                 ali_set_spdifout_rate(state, controller_independent_spdif_locked);
2861                         } else {
2862                                 if ((dmabuf->write_channel = card->alloc_pcm_channel(card)) == NULL) {
2863                                         kfree(card->states[i]);
2864                                         card->states[i] = NULL;
2865                                         return -EBUSY;
2866                                 }
2867                                 /* Initialize to 8kHz?  What if we don't support 8kHz? */
2868                                 /*  Let's change this to check for S/PDIF stuff */
2869
2870                                 dmabuf->trigger |= PCM_ENABLE_OUTPUT;
2871                                 if (codec_pcmout_share_spdif_locked) {
2872                                         ali_set_dac_rate(state, codec_pcmout_share_spdif_locked);
2873                                         ali_set_spdif_output(state, AC97_EA_SPSA_3_4, codec_pcmout_share_spdif_locked);
2874                                 } else {
2875                                         ali_set_dac_rate(state, 8000);
2876                                 }
2877                         }
2878
2879                 }
2880         }
2881
2882         /* set default sample format. According to OSS Programmer's Guide  /dev/dsp
2883            should be default to unsigned 8-bits, mono, with sample rate 8kHz and
2884            /dev/dspW will accept 16-bits sample, but we don't support those so we
2885            set it immediately to stereo and 16bit, which is all we do support */
2886         dmabuf->fmt |= ALI5455_FMT_16BIT | ALI5455_FMT_STEREO;
2887         dmabuf->ossfragsize = 0;
2888         dmabuf->ossmaxfrags = 0;
2889         dmabuf->subdivision = 0;
2890         state->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
2891         outl(0x00000000, card->iobase + ALI_INTERRUPTCR);
2892         outl(0x00000000, card->iobase + ALI_INTERRUPTSR);
2893         return 0;
2894 }
2895
2896 static int ali_release(struct inode *inode, struct file *file)
2897 {
2898         struct ali_state *state = (struct ali_state *) file->private_data;
2899         struct ali_card *card = state->card;
2900         struct dmabuf *dmabuf = &state->dmabuf;
2901         unsigned long flags;
2902         lock_kernel();
2903
2904         /* stop DMA state machine and free DMA buffers/channels */
2905         if (dmabuf->trigger & PCM_ENABLE_OUTPUT)
2906                 drain_dac(state, 0);
2907
2908         if (dmabuf->trigger & SPDIF_ENABLE_OUTPUT)
2909                 drain_spdifout(state, 0);
2910
2911         if (dmabuf->trigger & PCM_ENABLE_INPUT)
2912                 stop_adc(state);
2913
2914         spin_lock_irqsave(&card->lock, flags);
2915         dealloc_dmabuf(state);
2916         if (file->f_mode & FMODE_WRITE) {
2917                 if (codec_independent_spdif_locked > 0) {
2918                         state->card->free_pcm_channel(state->card, dmabuf->codec_spdifout_channel->num);
2919                 } else {
2920                         if (controller_independent_spdif_locked > 0)
2921                                 state->card->free_pcm_channel(state->card,
2922                                                               dmabuf->controller_spdifout_channel->num);
2923                         else state->card->free_pcm_channel(state->card,
2924                                                               dmabuf->write_channel->num);
2925                 }
2926         }
2927         if (file->f_mode & FMODE_READ)
2928                 state->card->free_pcm_channel(state->card, dmabuf->read_channel->num);
2929
2930         state->card->states[state->virt] = NULL;
2931         kfree(state);
2932         spin_unlock_irqrestore(&card->lock, flags);
2933         unlock_kernel();
2934         return 0;
2935 }
2936
2937 static /*const */ struct file_operations ali_audio_fops = {
2938         .owner          = THIS_MODULE,
2939         .llseek         = no_llseek,
2940         .read           = ali_read,
2941         .write          = ali_write,
2942         .poll           = ali_poll,
2943         .ioctl          = ali_ioctl,
2944         .mmap           = ali_mmap,
2945         .open           = ali_open,
2946         .release        = ali_release,
2947 };
2948
2949 /* Read AC97 codec registers */
2950 static u16 ali_ac97_get(struct ac97_codec *dev, u8 reg)
2951 {
2952         struct ali_card *card = dev->private_data;
2953         int count1 = 100;
2954         char val;
2955         unsigned short int data = 0, count, addr1, addr2 = 0;
2956
2957         spin_lock(&card->ac97_lock);
2958         while (count1-- && (inl(card->iobase + ALI_CAS) & 0x80000000))
2959                 udelay(1);
2960
2961         addr1 = reg;
2962         reg |= 0x0080;
2963         for (count = 0; count < 0x7f; count++) {
2964                 val = inb(card->iobase + ALI_CSPSR);
2965                 if (val & 0x08)
2966                         break;
2967         }
2968         if (count == 0x7f)
2969         {
2970                 spin_unlock(&card->ac97_lock);
2971                 return -1;
2972         }
2973         outw(reg, (card->iobase + ALI_CPR) + 2);
2974         for (count = 0; count < 0x7f; count++) {
2975                 val = inb(card->iobase + ALI_CSPSR);
2976                 if (val & 0x02) {
2977                         data = inw(card->iobase + ALI_SPR);
2978                         addr2 = inw((card->iobase + ALI_SPR) + 2);
2979                         break;
2980                 }
2981         }
2982         spin_unlock(&card->ac97_lock);
2983         if (count == 0x7f)
2984                 return -1;
2985         if (addr2 != addr1)
2986                 return -1;
2987         return ((u16) data);
2988 }
2989
2990 /* write ac97 codec register   */
2991
2992 static void ali_ac97_set(struct ac97_codec *dev, u8 reg, u16 data)
2993 {
2994         struct ali_card *card = dev->private_data;
2995         int count1 = 100;
2996         char val;
2997         unsigned short int count;
2998
2999         spin_lock(&card->ac97_lock);
3000         while (count1-- && (inl(card->iobase + ALI_CAS) & 0x80000000))
3001                 udelay(1);
3002
3003         for (count = 0; count < 0x7f; count++) {
3004                 val = inb(card->iobase + ALI_CSPSR);
3005                 if (val & 0x08)
3006                         break;
3007         }
3008         if (count == 0x7f) {
3009                 printk(KERN_WARNING "ali_ac97_set: AC97 codec register access timed out. \n");
3010                 spin_unlock(&card->ac97_lock);
3011                 return;
3012         }
3013         outw(data, (card->iobase + ALI_CPR));
3014         outb(reg, (card->iobase + ALI_CPR) + 2);
3015         for (count = 0; count < 0x7f; count++) {
3016                 val = inb(card->iobase + ALI_CSPSR);
3017                 if (val & 0x01)
3018                         break;
3019         }
3020         spin_unlock(&card->ac97_lock);
3021         if (count == 0x7f)
3022                 printk(KERN_WARNING "ali_ac97_set: AC97 codec register access timed out. \n");
3023         return;
3024 }
3025
3026 /* OSS /dev/mixer file operation methods */
3027
3028 static int ali_open_mixdev(struct inode *inode, struct file *file)
3029 {
3030         int i;
3031         int minor = iminor(inode);
3032         struct ali_card *card = devs;
3033         for (card = devs; card != NULL; card = card->next) {
3034                 /*
3035                  * If we are initializing and then fail, card could go
3036                  * away unuexpectedly while we are in the for() loop.
3037                  * So, check for card on each iteration before we check
3038                  * for card->initializing to avoid a possible oops.
3039                  * This usually only matters for times when the driver is
3040                  * autoloaded by kmod.
3041                  */
3042                 for (i = 0; i < 50 && card && card->initializing; i++) {
3043                         set_current_state(TASK_UNINTERRUPTIBLE);
3044                         schedule_timeout(HZ / 20);
3045                 }
3046                 for (i = 0; i < NR_AC97 && card && !card->initializing; i++)
3047                         if (card->ac97_codec[i] != NULL
3048                             && card->ac97_codec[i]->dev_mixer == minor) {
3049                                 file->private_data = card->ac97_codec[i];
3050                                 return 0;
3051                         }
3052         }
3053         return -ENODEV;
3054 }
3055
3056 static int ali_ioctl_mixdev(struct inode *inode,
3057                             struct file *file,
3058                             unsigned int cmd, unsigned long arg)
3059 {
3060         struct ac97_codec *codec = (struct ac97_codec *) file->private_data;
3061         return codec->mixer_ioctl(codec, cmd, arg);
3062 }
3063
3064 static /*const */ struct file_operations ali_mixer_fops = {
3065         .owner  = THIS_MODULE,
3066         .llseek = no_llseek,
3067         .ioctl  = ali_ioctl_mixdev,
3068         .open   = ali_open_mixdev,
3069 };
3070
3071 /* AC97 codec initialisation.  These small functions exist so we don't
3072    duplicate code between module init and apm resume */
3073
3074 static inline int ali_ac97_exists(struct ali_card *card, int ac97_number)
3075 {
3076         unsigned int i = 1;
3077         u32 reg = inl(card->iobase + ALI_RTSR);
3078         if (ac97_number) {
3079                 while (i < 100) {
3080
3081                         reg = inl(card->iobase + ALI_RTSR);
3082                         if (reg & 0x40) {
3083                                 break;
3084                         } else {
3085                                 outl(reg | 0x00000040,
3086                                      card->iobase + 0x34);
3087                                 udelay(1);
3088                         }
3089                         i++;
3090                 }
3091
3092         } else {
3093                 while (i < 100) {
3094                         reg = inl(card->iobase + ALI_RTSR);
3095                         if (reg & 0x80) {
3096                                 break;
3097                         } else {
3098                                 outl(reg | 0x00000080,
3099                                      card->iobase + 0x34);
3100                                 udelay(1);
3101                         }
3102                         i++;
3103                 }
3104         }
3105
3106         if (ac97_number)
3107                 return reg & 0x40;
3108         else
3109                 return reg & 0x80;
3110 }
3111
3112 static inline int ali_ac97_enable_variable_rate(struct ac97_codec *codec)
3113 {
3114         ali_ac97_set(codec, AC97_EXTENDED_STATUS, 9);
3115         ali_ac97_set(codec, AC97_EXTENDED_STATUS, ali_ac97_get(codec, AC97_EXTENDED_STATUS) | 0xE800);
3116         return (ali_ac97_get(codec, AC97_EXTENDED_STATUS) & 1);
3117 }
3118
3119
3120 static int ali_ac97_probe_and_powerup(struct ali_card *card, struct ac97_codec *codec)
3121 {
3122         /* Returns 0 on failure */
3123         int i;
3124         u16 addr;
3125         if (ac97_probe_codec(codec) == 0)
3126                 return 0;
3127         /* ac97_probe_codec is success ,then begin to init codec */
3128         ali_ac97_set(codec, AC97_RESET, 0xffff);
3129         if (card->channel[0].used == 1) {
3130                 ali_ac97_set(codec, AC97_RECORD_SELECT, 0x0000);
3131                 ali_ac97_set(codec, AC97_LINEIN_VOL, 0x0808);
3132                 ali_ac97_set(codec, AC97_RECORD_GAIN, 0x0F0F);
3133         }
3134
3135         if (card->channel[2].used == 1) //if MICin then init codec
3136         {
3137                 ali_ac97_set(codec, AC97_RECORD_SELECT, 0x0000);
3138                 ali_ac97_set(codec, AC97_MIC_VOL, 0x8808);
3139                 ali_ac97_set(codec, AC97_RECORD_GAIN, 0x0F0F);
3140                 ali_ac97_set(codec, AC97_RECORD_GAIN_MIC, 0x0000);
3141         }
3142
3143         ali_ac97_set(codec, AC97_MASTER_VOL_STEREO, 0x0000);
3144         ali_ac97_set(codec, AC97_HEADPHONE_VOL, 0x0000);
3145         ali_ac97_set(codec, AC97_PCMOUT_VOL, 0x0000);
3146         ali_ac97_set(codec, AC97_CD_VOL, 0x0808);
3147         ali_ac97_set(codec, AC97_VIDEO_VOL, 0x0808);
3148         ali_ac97_set(codec, AC97_AUX_VOL, 0x0808);
3149         ali_ac97_set(codec, AC97_PHONE_VOL, 0x8048);
3150         ali_ac97_set(codec, AC97_PCBEEP_VOL, 0x0000);
3151         ali_ac97_set(codec, AC97_GENERAL_PURPOSE, AC97_GP_MIX);
3152         ali_ac97_set(codec, AC97_MASTER_VOL_MONO, 0x0000);
3153         ali_ac97_set(codec, 0x38, 0x0000);
3154         addr = ali_ac97_get(codec, 0x2a);
3155         ali_ac97_set(codec, 0x2a, addr | 0x0001);
3156         addr = ali_ac97_get(codec, 0x2a);
3157         addr = ali_ac97_get(codec, 0x28);
3158         ali_ac97_set(codec, 0x2c, 0xbb80);
3159         addr = ali_ac97_get(codec, 0x2c);
3160         /* power it all up */
3161         ali_ac97_set(codec, AC97_POWER_CONTROL,
3162                      ali_ac97_get(codec, AC97_POWER_CONTROL) & ~0x7f00);
3163         /* wait for analog ready */
3164         for (i = 10; i && ((ali_ac97_get(codec, AC97_POWER_CONTROL) & 0xf) != 0xf); i--) {
3165                 set_current_state(TASK_UNINTERRUPTIBLE);
3166                 schedule_timeout(HZ / 20);
3167         }
3168         /* FIXME !! */
3169         i++;
3170         return i;
3171 }
3172
3173
3174 /* I clone ali5455(2.4.7 )  not clone i810_audio(2.4.18)  */
3175
3176 static int ali_reset_5455(struct ali_card *card)
3177 {
3178         outl(0x80000003, card->iobase + ALI_SCR);
3179         outl(0x83838383, card->iobase + ALI_FIFOCR1);
3180         outl(0x83838383, card->iobase + ALI_FIFOCR2);
3181         if (controller_pcmout_share_spdif_locked > 0) {
3182                 outl((inl(card->iobase + ALI_SPDIFICS) | 0x00000001),
3183                      card->iobase + ALI_SPDIFICS);
3184                 outl(0x0408000a, card->iobase + ALI_INTERFACECR);
3185         } else {
3186                 if (codec_independent_spdif_locked > 0) {
3187                         outl((inl(card->iobase + ALI_SCR) | 0x00100000), card->iobase + ALI_SCR);       // now I select slot 7 & 8
3188                         outl(0x00200000, card->iobase + ALI_INTERFACECR);       //enable codec independent spdifout
3189                 } else
3190                         outl(0x04080002, card->iobase + ALI_INTERFACECR);
3191         }
3192
3193         outl(0x00000000, card->iobase + ALI_INTERRUPTCR);
3194         outl(0x00000000, card->iobase + ALI_INTERRUPTSR);
3195         if (controller_independent_spdif_locked > 0)
3196                 outl((inl(card->iobase + ALI_SPDIFICS) | 0x00000001),
3197                      card->iobase + ALI_SPDIFICS);
3198         return 1;
3199 }
3200
3201
3202 static int ali_ac97_random_init_stuff(struct ali_card
3203                                       *card)
3204 {
3205         u32 reg = inl(card->iobase + ALI_SCR);
3206         int i = 0;
3207         reg = inl(card->iobase + ALI_SCR);
3208         if ((reg & 2) == 0)     /* Cold required */
3209                 reg |= 2;
3210         else
3211                 reg |= 1;       /* Warm */
3212         reg &= ~0x80000000;     /* ACLink on */
3213         outl(reg, card->iobase + ALI_SCR);
3214
3215         while (i < 10) {
3216                 if ((inl(card->iobase + 0x18) & (1 << 1)) == 0)
3217                         break;
3218                 current->state = TASK_UNINTERRUPTIBLE;
3219                 schedule_timeout(HZ / 20);
3220                 i++;
3221         }
3222         if (i == 10) {
3223                 printk(KERN_ERR "ali_audio: AC'97 reset failed.\n");
3224                 return 0;
3225         }
3226
3227         set_current_state(TASK_UNINTERRUPTIBLE);
3228         schedule_timeout(HZ / 2);
3229         return 1;
3230 }
3231
3232 /* AC97 codec initialisation. */
3233
3234 static int __devinit ali_ac97_init(struct ali_card *card)
3235 {
3236         int num_ac97 = 0;
3237         int total_channels = 0;
3238         struct ac97_codec *codec;
3239         u16 eid;
3240
3241         if (!ali_ac97_random_init_stuff(card))
3242                 return 0;
3243
3244         /* Number of channels supported */
3245         /* What about the codec?  Just because the ICH supports */
3246         /* multiple channels doesn't mean the codec does.       */
3247         /* we'll have to modify this in the codec section below */
3248         /* to reflect what the codec has.                       */
3249         /* ICH and ICH0 only support 2 channels so don't bother */
3250         /* to check....                                         */
3251         inl(card->iobase + ALI_CPR);
3252         card->channels = 2;
3253
3254         for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
3255
3256                 /* Assume codec isn't available until we go through the
3257                  * gauntlet below */
3258                 card->ac97_codec[num_ac97] = NULL;
3259                 /* The ICH programmer's reference says you should   */
3260                 /* check the ready status before probing. So we chk */
3261                 /*   What do we do if it's not ready?  Wait and try */
3262                 /*   again, or abort?                               */
3263                 if (!ali_ac97_exists(card, num_ac97)) {
3264                         if (num_ac97 == 0)
3265                                 printk(KERN_ERR "ali_audio: Primary codec not ready.\n");
3266                         break;
3267                 }
3268
3269                 if ((codec = ac97_alloc_codec()) == NULL)
3270                         return -ENOMEM;
3271                 /* initialize some basic codec information, other fields will be filled
3272                    in ac97_probe_codec */
3273                 codec->private_data = card;
3274                 codec->id = num_ac97;
3275                 codec->codec_read = ali_ac97_get;
3276                 codec->codec_write = ali_ac97_set;
3277                 if (!ali_ac97_probe_and_powerup(card, codec)) {
3278                         printk(KERN_ERR "ali_audio: timed out waiting for codec %d analog ready",
3279                              num_ac97);
3280                         kfree(codec);
3281                         break;  /* it didn't work */
3282                 }
3283
3284                 /* Store state information about S/PDIF transmitter */
3285                 card->ac97_status = 0;
3286                 /* Don't attempt to get eid until powerup is complete */
3287                 eid = ali_ac97_get(codec, AC97_EXTENDED_ID);
3288                 if (eid == 0xFFFF) {
3289                         printk(KERN_ERR "ali_audio: no codec attached ?\n");
3290                         kfree(codec);
3291                         break;
3292                 }
3293
3294                 card->ac97_features = eid;
3295                 /* Now check the codec for useful features to make up for
3296                    the dumbness of the ali5455 hardware engine */
3297                 if (!(eid & 0x0001))
3298                         printk(KERN_WARNING
3299                                "ali_audio: only 48Khz playback available.\n");
3300                 else {
3301                         if (!ali_ac97_enable_variable_rate(codec)) {
3302                                 printk(KERN_WARNING
3303                                        "ali_audio: Codec refused to allow VRA, using 48Khz only.\n");
3304                                 card->ac97_features &= ~1;
3305                         }
3306                 }
3307
3308                 /* Determine how many channels the codec(s) support   */
3309                 /*   - The primary codec always supports 2            */
3310                 /*   - If the codec supports AMAP, surround DACs will */
3311                 /*     automaticlly get assigned to slots.            */
3312                 /*     * Check for surround DACs and increment if     */
3313                 /*       found.                                       */
3314                 /*   - Else check if the codec is revision 2.2        */
3315                 /*     * If surround DACs exist, assign them to slots */
3316                 /*       and increment channel count.                 */
3317
3318                 /* All of this only applies to ICH2 and above. ICH    */
3319                 /* and ICH0 only support 2 channels.  ICH2 will only  */
3320                 /* support multiple codecs in a "split audio" config. */
3321                 /* as described above.                                */
3322
3323                 /* TODO: Remove all the debugging messages!           */
3324
3325                 if ((eid & 0xc000) == 0)        /* primary codec */
3326                         total_channels += 2;
3327                 if ((codec->dev_mixer = register_sound_mixer(&ali_mixer_fops, -1)) < 0) {
3328                         printk(KERN_ERR "ali_audio: couldn't register mixer!\n");
3329                         kfree(codec);
3330                         break;
3331                 }
3332                 card->ac97_codec[num_ac97] = codec;
3333         }
3334         /* pick the minimum of channels supported by ICHx or codec(s) */
3335         card->channels = (card->channels > total_channels) ? total_channels : card->channels;
3336         return num_ac97;
3337 }
3338
3339 static void __devinit ali_configure_clocking(void)
3340 {
3341         struct ali_card *card;
3342         struct ali_state *state;
3343         struct dmabuf *dmabuf;
3344         unsigned int i, offset, new_offset;
3345         unsigned long flags;
3346         card = devs;
3347
3348         /* We could try to set the clocking for multiple cards, but can you even have
3349          * more than one ali in a machine?  Besides, clocking is global, so unless
3350          * someone actually thinks more than one ali in a machine is possible and
3351          * decides to rewrite that little bit, setting the rate for more than one card
3352          * is a waste of time.
3353          */
3354         if (card != NULL) {
3355                 state = card->states[0] = (struct ali_state *)
3356                     kmalloc(sizeof(struct ali_state), GFP_KERNEL);
3357                 if (state == NULL)
3358                         return;
3359                 memset(state, 0, sizeof(struct ali_state));
3360                 dmabuf = &state->dmabuf;
3361                 dmabuf->write_channel = card->alloc_pcm_channel(card);
3362                 state->virt = 0;
3363                 state->card = card;
3364                 state->magic = ALI5455_STATE_MAGIC;
3365                 init_waitqueue_head(&dmabuf->wait);
3366                 init_MUTEX(&state->open_sem);
3367                 dmabuf->fmt = ALI5455_FMT_STEREO | ALI5455_FMT_16BIT;
3368                 dmabuf->trigger = PCM_ENABLE_OUTPUT;
3369                 ali_set_dac_rate(state, 48000);
3370                 if (prog_dmabuf(state, 0) != 0)
3371                         goto config_out_nodmabuf;
3372
3373                 if (dmabuf->dmasize < 16384)
3374                         goto config_out;
3375
3376                 dmabuf->count = dmabuf->dmasize;
3377                 outb(31, card->iobase + dmabuf->write_channel->port + OFF_LVI);
3378
3379                 local_irq_save(flags);
3380                 start_dac(state);
3381                 offset = ali_get_dma_addr(state, 0);
3382                 mdelay(50);
3383                 new_offset = ali_get_dma_addr(state, 0);
3384                 stop_dac(state);
3385
3386                 outb(2, card->iobase + dmabuf->write_channel->port + OFF_CR);
3387                 local_irq_restore(flags);
3388
3389                 i = new_offset - offset;
3390
3391                 if (i == 0)
3392                         goto config_out;
3393                 i = i / 4 * 20;
3394                 if (i > 48500 || i < 47500) {
3395                         clocking = clocking * clocking / i;
3396                 }
3397 config_out:
3398                 dealloc_dmabuf(state);
3399 config_out_nodmabuf:
3400                 state->card->free_pcm_channel(state->card, state->dmabuf. write_channel->num);
3401                 kfree(state);
3402                 card->states[0] = NULL;
3403         }
3404 }
3405
3406 /* install the driver, we do not allocate hardware channel nor DMA buffer now, they are defered
3407    until "ACCESS" time (in prog_dmabuf called by open/read/write/ioctl/mmap) */
3408
3409 static int __devinit ali_probe(struct pci_dev *pci_dev,
3410                                const struct pci_device_id *pci_id)
3411 {
3412         struct ali_card *card;
3413         if (pci_enable_device(pci_dev))
3414                 return -EIO;
3415         if (pci_set_dma_mask(pci_dev, ALI5455_DMA_MASK)) {
3416                 printk(KERN_ERR "ali5455: architecture does not support"
3417                        " 32bit PCI busmaster DMA\n");
3418                 return -ENODEV;
3419         }
3420
3421         if ((card = kmalloc(sizeof(struct ali_card), GFP_KERNEL)) == NULL) {
3422                 printk(KERN_ERR "ali_audio: out of memory\n");
3423                 return -ENOMEM;
3424         }
3425         memset(card, 0, sizeof(*card));
3426         card->initializing = 1;
3427         card->iobase = pci_resource_start(pci_dev, 0);
3428         card->pci_dev = pci_dev;
3429         card->pci_id = pci_id->device;
3430         card->irq = pci_dev->irq;
3431         card->next = devs;
3432         card->magic = ALI5455_CARD_MAGIC;
3433 #ifdef CONFIG_PM
3434         card->pm_suspended = 0;
3435 #endif
3436         spin_lock_init(&card->lock);
3437         spin_lock_init(&card->ac97_lock);
3438         devs = card;
3439         pci_set_master(pci_dev);
3440         printk(KERN_INFO "ali: %s found at IO 0x%04lx, IRQ %d\n",
3441                card_names[pci_id->driver_data], card->iobase, card->irq);
3442         card->alloc_pcm_channel = ali_alloc_pcm_channel;
3443         card->alloc_rec_pcm_channel = ali_alloc_rec_pcm_channel;
3444         card->alloc_rec_mic_channel = ali_alloc_rec_mic_channel;
3445         card->alloc_codec_spdifout_channel = ali_alloc_codec_spdifout_channel;
3446         card->alloc_controller_spdifout_channel = ali_alloc_controller_spdifout_channel;
3447         card->free_pcm_channel = ali_free_pcm_channel;
3448         card->channel[0].offset = 0;
3449         card->channel[0].port = 0x40;
3450         card->channel[0].num = 0;
3451         card->channel[1].offset = 0;
3452         card->channel[1].port = 0x50;
3453         card->channel[1].num = 1;
3454         card->channel[2].offset = 0;
3455         card->channel[2].port = 0x60;
3456         card->channel[2].num = 2;
3457         card->channel[3].offset = 0;
3458         card->channel[3].port = 0x70;
3459         card->channel[3].num = 3;
3460         card->channel[4].offset = 0;
3461         card->channel[4].port = 0xb0;
3462         card->channel[4].num = 4;
3463         /* claim our iospace and irq */
3464         request_region(card->iobase, 256, card_names[pci_id->driver_data]);
3465         if (request_irq(card->irq, &ali_interrupt, SA_SHIRQ,
3466                         card_names[pci_id->driver_data], card)) {
3467                 printk(KERN_ERR "ali_audio: unable to allocate irq %d\n",
3468                        card->irq);
3469                 release_region(card->iobase, 256);
3470                 kfree(card);
3471                 return -ENODEV;
3472         }
3473
3474         if (ali_reset_5455(card) <= 0) {
3475                 unregister_sound_dsp(card->dev_audio);
3476                 release_region(card->iobase, 256);
3477                 free_irq(card->irq, card);
3478                 kfree(card);
3479                 return -ENODEV;
3480         }
3481
3482         /* initialize AC97 codec and register /dev/mixer */
3483         if (ali_ac97_init(card) < 0) {
3484                 release_region(card->iobase, 256);
3485                 free_irq(card->irq, card);
3486                 kfree(card);
3487                 return -ENODEV;
3488         }
3489
3490         pci_set_drvdata(pci_dev, card);
3491
3492         if (clocking == 0) {
3493                 clocking = 48000;
3494                 ali_configure_clocking();
3495         }
3496
3497         /* register /dev/dsp */
3498         if ((card->dev_audio = register_sound_dsp(&ali_audio_fops, -1)) < 0) {
3499                 int i;
3500                 printk(KERN_ERR"ali_audio: couldn't register DSP device!\n");
3501                 release_region(card->iobase, 256);
3502                 free_irq(card->irq, card);
3503                 for (i = 0; i < NR_AC97; i++)
3504                         if (card->ac97_codec[i] != NULL) {
3505                                 unregister_sound_mixer(card->ac97_codec[i]->dev_mixer);
3506                                 kfree(card->ac97_codec[i]);
3507                         }
3508                 kfree(card);
3509                 return -ENODEV;
3510         }
3511         card->initializing = 0;
3512         return 0;
3513 }
3514
3515 static void __devexit ali_remove(struct pci_dev *pci_dev)
3516 {
3517         int i;
3518         struct ali_card *card = pci_get_drvdata(pci_dev);
3519         /* free hardware resources */
3520         free_irq(card->irq, devs);
3521         release_region(card->iobase, 256);
3522         /* unregister audio devices */
3523         for (i = 0; i < NR_AC97; i++)
3524                 if (card->ac97_codec[i] != NULL) {
3525                         unregister_sound_mixer(card->ac97_codec[i]->
3526                                                dev_mixer);
3527                         ac97_release_codec(card->ac97_codec[i]);
3528                         card->ac97_codec[i] = NULL;
3529                 }
3530         unregister_sound_dsp(card->dev_audio);
3531         kfree(card);
3532 }
3533
3534 #ifdef CONFIG_PM
3535 static int ali_pm_suspend(struct pci_dev *dev, u32 pm_state)
3536 {
3537         struct ali_card *card = pci_get_drvdata(dev);
3538         struct ali_state *state;
3539         unsigned long flags;
3540         struct dmabuf *dmabuf;
3541         int i, num_ac97;
3542
3543         if (!card)
3544                 return 0;
3545         spin_lock_irqsave(&card->lock, flags);
3546         card->pm_suspended = 1;
3547         for (i = 0; i < NR_HW_CH; i++) {
3548                 state = card->states[i];
3549                 if (!state)
3550                         continue;
3551                 /* this happens only if there are open files */
3552                 dmabuf = &state->dmabuf;
3553                 if (dmabuf->enable & DAC_RUNNING ||
3554                     (dmabuf->count
3555                      && (dmabuf->trigger & PCM_ENABLE_OUTPUT))) {
3556                         state->pm_saved_dac_rate = dmabuf->rate;
3557                         stop_dac(state);
3558                 } else {
3559                         state->pm_saved_dac_rate = 0;
3560                 }
3561                 if (dmabuf->enable & ADC_RUNNING) {
3562                         state->pm_saved_adc_rate = dmabuf->rate;
3563                         stop_adc(state);
3564                 } else {
3565                         state->pm_saved_adc_rate = 0;
3566                 }
3567                 dmabuf->ready = 0;
3568                 dmabuf->swptr = dmabuf->hwptr = 0;
3569                 dmabuf->count = dmabuf->total_bytes = 0;
3570         }
3571
3572         spin_unlock_irqrestore(&card->lock, flags);
3573         /* save mixer settings */
3574         for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
3575                 struct ac97_codec *codec = card->ac97_codec[num_ac97];
3576                 if (!codec)
3577                         continue;
3578                 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
3579                         if ((supported_mixer(codec, i)) && (codec->read_mixer)) {
3580                                 card->pm_saved_mixer_settings[i][num_ac97] = codec->read_mixer(codec, i);
3581                         }
3582                 }
3583         }
3584         pci_save_state(dev, card->pm_save_state);       /* XXX do we need this? */
3585         pci_disable_device(dev);        /* disable busmastering */
3586         pci_set_power_state(dev, 3);    /* Zzz. */
3587         return 0;
3588 }
3589
3590
3591 static int ali_pm_resume(struct pci_dev *dev)
3592 {
3593         int num_ac97, i = 0;
3594         struct ali_card *card = pci_get_drvdata(dev);
3595         pci_enable_device(dev);
3596         pci_restore_state(dev, card->pm_save_state);
3597         /* observation of a toshiba portege 3440ct suggests that the
3598            hardware has to be more or less completely reinitialized from
3599            scratch after an apm suspend.  Works For Me.   -dan */
3600         ali_ac97_random_init_stuff(card);
3601         for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
3602                 struct ac97_codec *codec = card->ac97_codec[num_ac97];
3603                 /* check they haven't stolen the hardware while we were
3604                    away */
3605                 if (!codec || !ali_ac97_exists(card, num_ac97)) {
3606                         if (num_ac97)
3607                                 continue;
3608                         else
3609                                 BUG();
3610                 }
3611                 if (!ali_ac97_probe_and_powerup(card, codec))
3612                         BUG();
3613                 if ((card->ac97_features & 0x0001)) {
3614                         /* at probe time we found we could do variable
3615                            rates, but APM suspend has made it forget
3616                            its magical powers */
3617                         if (!ali_ac97_enable_variable_rate(codec))
3618                                 BUG();
3619                 }
3620                 /* we lost our mixer settings, so restore them */
3621                 for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
3622                         if (supported_mixer(codec, i)) {
3623                                 int val = card->pm_saved_mixer_settings[i][num_ac97];
3624                                 codec->mixer_state[i] = val;
3625                                 codec->write_mixer(codec, i,
3626                                                    (val & 0xff),
3627                                                    ((val >> 8) & 0xff));
3628                         }
3629                 }
3630         }
3631
3632         /* we need to restore the sample rate from whatever it was */
3633         for (i = 0; i < NR_HW_CH; i++) {
3634                 struct ali_state *state = card->states[i];
3635                 if (state) {
3636                         if (state->pm_saved_adc_rate)
3637                                 ali_set_adc_rate(state, state->pm_saved_adc_rate);
3638                         if (state->pm_saved_dac_rate)
3639                                 ali_set_dac_rate(state, state->pm_saved_dac_rate);
3640                 }
3641         }
3642
3643         card->pm_suspended = 0;
3644         /* any processes that were reading/writing during the suspend
3645            probably ended up here */
3646         for (i = 0; i < NR_HW_CH; i++) {
3647                 struct ali_state *state = card->states[i];
3648                 if (state)
3649                         wake_up(&state->dmabuf.wait);
3650         }
3651         return 0;
3652 }
3653 #endif                          /* CONFIG_PM */
3654
3655 MODULE_AUTHOR("");
3656 MODULE_DESCRIPTION("ALI 5455 audio support");
3657 MODULE_LICENSE("GPL");
3658 MODULE_PARM(clocking, "i");
3659 MODULE_PARM(strict_clocking, "i");
3660 MODULE_PARM(codec_pcmout_share_spdif_locked, "i");
3661 MODULE_PARM(codec_independent_spdif_locked, "i");
3662 MODULE_PARM(controller_pcmout_share_spdif_locked, "i");
3663 MODULE_PARM(controller_independent_spdif_locked, "i");
3664 #define ALI5455_MODULE_NAME "ali5455"
3665 static struct pci_driver ali_pci_driver = {
3666         .name           = ALI5455_MODULE_NAME,
3667         .id_table       = ali_pci_tbl,
3668         .probe          = ali_probe,
3669         .remove         = __devexit_p(ali_remove),
3670 #ifdef CONFIG_PM
3671         .suspend        = ali_pm_suspend,
3672         .resume         = ali_pm_resume,
3673 #endif                          /* CONFIG_PM */
3674 };
3675
3676 static int __init ali_init_module(void)
3677 {
3678         printk(KERN_INFO "ALI 5455 + AC97 Audio, version "
3679                DRIVER_VERSION ", " __TIME__ " " __DATE__ "\n");
3680
3681         if (codec_independent_spdif_locked > 0) {
3682                 if (codec_independent_spdif_locked == 32000
3683                     || codec_independent_spdif_locked == 44100
3684                     || codec_independent_spdif_locked == 48000) {
3685                         printk(KERN_INFO "ali_audio: Enabling S/PDIF at sample rate %dHz.\n", codec_independent_spdif_locked);
3686                 } else {
3687                         printk(KERN_INFO "ali_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n");
3688                         codec_independent_spdif_locked = 0;
3689                 }
3690         }
3691         if (controller_independent_spdif_locked > 0) {
3692                 if (controller_independent_spdif_locked == 32000
3693                     || controller_independent_spdif_locked == 44100
3694                     || controller_independent_spdif_locked == 48000) {
3695                         printk(KERN_INFO "ali_audio: Enabling S/PDIF at sample rate %dHz.\n", controller_independent_spdif_locked);
3696                 } else {
3697                         printk(KERN_INFO "ali_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n");
3698                         controller_independent_spdif_locked = 0;
3699                 }
3700         }
3701
3702         if (codec_pcmout_share_spdif_locked > 0) {
3703                 if (codec_pcmout_share_spdif_locked == 32000
3704                     || codec_pcmout_share_spdif_locked == 44100
3705                     || codec_pcmout_share_spdif_locked == 48000) {
3706                         printk(KERN_INFO "ali_audio: Enabling S/PDIF at sample rate %dHz.\n", codec_pcmout_share_spdif_locked);
3707                 } else {
3708                         printk(KERN_INFO "ali_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n");
3709                         codec_pcmout_share_spdif_locked = 0;
3710                 }
3711         }
3712         if (controller_pcmout_share_spdif_locked > 0) {
3713                 if (controller_pcmout_share_spdif_locked == 32000
3714                     || controller_pcmout_share_spdif_locked == 44100
3715                     || controller_pcmout_share_spdif_locked == 48000) {
3716                         printk(KERN_INFO "ali_audio: Enabling controller S/PDIF at sample rate %dHz.\n", controller_pcmout_share_spdif_locked);
3717                 } else {
3718                         printk(KERN_INFO "ali_audio: S/PDIF can only be locked to 32000, 44100, or 48000Hz.\n");
3719                         controller_pcmout_share_spdif_locked = 0;
3720                 }
3721         }
3722         if (!pci_register_driver(&ali_pci_driver)) {
3723                 pci_unregister_driver(&ali_pci_driver);
3724                 return -ENODEV;
3725         }
3726         return 0;
3727 }
3728
3729 static void __exit ali_cleanup_module(void)
3730 {
3731         pci_unregister_driver(&ali_pci_driver);
3732 }
3733
3734 module_init(ali_init_module);
3735 module_exit(ali_cleanup_module);
3736 /*
3737 Local Variables:
3738 c-basic-offset: 8
3739 End:
3740 */