sound/pci/intel8x0m.c

   1 /*
   2  *   ALSA modem driver for Intel ICH (i8x0) chipsets
   3  *
   4  *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   5  *
   6  *   This is modified (by Sasha Khapyorsky <sashak@alsa-project.org>) version
   7  *   of ALSA ICH sound driver intel8x0.c .
   8  *
   9  *
  10  *   This program is free software; you can redistribute it and/or modify
  11  *   it under the terms of the GNU General Public License as published by
  12  *   the Free Software Foundation; either version 2 of the License, or
  13  *   (at your option) any later version.
  14  *
  15  *   This program is distributed in the hope that it will be useful,
  16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  *   GNU General Public License for more details.
  19  *
  20  *   You should have received a copy of the GNU General Public License
  21  *   along with this program; if not, write to the Free Software
  22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23  *
  24  */
  25
  26 #include <asm/io.h>
  27 #include <linux/delay.h>
  28 #include <linux/interrupt.h>
  29 #include <linux/init.h>
  30 #include <linux/pci.h>
  31 #include <linux/slab.h>
  32 #include <linux/moduleparam.h>
  33 #include <sound/core.h>
  34 #include <sound/pcm.h>
  35 #include <sound/ac97_codec.h>
  36 #include <sound/info.h>
  37 #include <sound/initval.h>
  38
  39 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  40 MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; "
  41                    "SiS 7013; NVidia MCP/2/2S/3 modems");
  42 MODULE_LICENSE("GPL");
  43 MODULE_SUPPORTED_DEVICE("{{Intel,82801AA-ICH},"
  44                 "{Intel,82901AB-ICH0},"
  45                 "{Intel,82801BA-ICH2},"
  46                 "{Intel,82801CA-ICH3},"
  47                 "{Intel,82801DB-ICH4},"
  48                 "{Intel,ICH5},"
  49                 "{Intel,ICH6},"
  50                 "{Intel,ICH7},"
  51                 "{Intel,MX440},"
  52                 "{SiS,7013},"
  53                 "{NVidia,NForce Modem},"
  54                 "{NVidia,NForce2 Modem},"
  55                 "{NVidia,NForce2s Modem},"
  56                 "{NVidia,NForce3 Modem},"
  57                 "{AMD,AMD768}}");
  58
  59 static int index = -2; /* Exclude the first card */
  60 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  61 static int ac97_clock;
  62
  63 module_param(index, int, 0444);
  64 MODULE_PARM_DESC(index, "Index value for Intel i8x0 modemcard.");
  65 module_param(id, charp, 0444);
  66 MODULE_PARM_DESC(id, "ID string for Intel i8x0 modemcard.");
  67 module_param(ac97_clock, int, 0444);
  68 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = auto-detect).");
  69
  70 /* just for backward compatibility */
  71 static int enable;
  72 module_param(enable, bool, 0444);
  73
  74 /*
  75  *  Direct registers
  76  */
  77 enum { DEVICE_INTEL, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
  78
  79 #define ICHREG(x) ICH_REG_##x
  80
  81 #define DEFINE_REGSET(name,base) \
  82 enum { \
  83         ICH_REG_##name##_BDBAR  = base + 0x0,   /* dword - buffer descriptor list base address */ \
  84         ICH_REG_##name##_CIV    = base + 0x04,  /* byte - current index value */ \
  85         ICH_REG_##name##_LVI    = base + 0x05,  /* byte - last valid index */ \
  86         ICH_REG_##name##_SR     = base + 0x06,  /* byte - status register */ \
  87         ICH_REG_##name##_PICB   = base + 0x08,  /* word - position in current buffer */ \
  88         ICH_REG_##name##_PIV    = base + 0x0a,  /* byte - prefetched index value */ \
  89         ICH_REG_##name##_CR     = base + 0x0b,  /* byte - control register */ \
  90 };
  91
  92 /* busmaster blocks */
  93 DEFINE_REGSET(OFF, 0);          /* offset */
  94
  95 /* values for each busmaster block */
  96
  97 /* LVI */
  98 #define ICH_REG_LVI_MASK                0x1f
  99
 100 /* SR */
 101 #define ICH_FIFOE                       0x10    /* FIFO error */
 102 #define ICH_BCIS                        0x08    /* buffer completion interrupt status */
 103 #define ICH_LVBCI                       0x04    /* last valid buffer completion interrupt */
 104 #define ICH_CELV                        0x02    /* current equals last valid */
 105 #define ICH_DCH                         0x01    /* DMA controller halted */
 106
 107 /* PIV */
 108 #define ICH_REG_PIV_MASK                0x1f    /* mask */
 109
 110 /* CR */
 111 #define ICH_IOCE                        0x10    /* interrupt on completion enable */
 112 #define ICH_FEIE                        0x08    /* fifo error interrupt enable */
 113 #define ICH_LVBIE                       0x04    /* last valid buffer interrupt enable */
 114 #define ICH_RESETREGS                   0x02    /* reset busmaster registers */
 115 #define ICH_STARTBM                     0x01    /* start busmaster operation */
 116
 117
 118 /* global block */
 119 #define ICH_REG_GLOB_CNT                0x3c    /* dword - global control */
 120 #define   ICH_TRIE              0x00000040      /* tertiary resume interrupt enable */
 121 #define   ICH_SRIE              0x00000020      /* secondary resume interrupt enable */
 122 #define   ICH_PRIE              0x00000010      /* primary resume interrupt enable */
 123 #define   ICH_ACLINK            0x00000008      /* AClink shut off */
 124 #define   ICH_AC97WARM          0x00000004      /* AC'97 warm reset */
 125 #define   ICH_AC97COLD          0x00000002      /* AC'97 cold reset */
 126 #define   ICH_GIE               0x00000001      /* GPI interrupt enable */
 127 #define ICH_REG_GLOB_STA                0x40    /* dword - global status */
 128 #define   ICH_TRI               0x20000000      /* ICH4: tertiary (AC_SDIN2) resume interrupt */
 129 #define   ICH_TCR               0x10000000      /* ICH4: tertiary (AC_SDIN2) codec ready */
 130 #define   ICH_BCS               0x08000000      /* ICH4: bit clock stopped */
 131 #define   ICH_SPINT             0x04000000      /* ICH4: S/PDIF interrupt */
 132 #define   ICH_P2INT             0x02000000      /* ICH4: PCM2-In interrupt */
 133 #define   ICH_M2INT             0x01000000      /* ICH4: Mic2-In interrupt */
 134 #define   ICH_SAMPLE_CAP        0x00c00000      /* ICH4: sample capability bits (RO) */
 135 #define   ICH_MULTICHAN_CAP     0x00300000      /* ICH4: multi-channel capability bits (RO) */
 136 #define   ICH_MD3               0x00020000      /* modem power down semaphore */
 137 #define   ICH_AD3               0x00010000      /* audio power down semaphore */
 138 #define   ICH_RCS               0x00008000      /* read completion status */
 139 #define   ICH_BIT3              0x00004000      /* bit 3 slot 12 */
 140 #define   ICH_BIT2              0x00002000      /* bit 2 slot 12 */
 141 #define   ICH_BIT1              0x00001000      /* bit 1 slot 12 */
 142 #define   ICH_SRI               0x00000800      /* secondary (AC_SDIN1) resume interrupt */
 143 #define   ICH_PRI               0x00000400      /* primary (AC_SDIN0) resume interrupt */
 144 #define   ICH_SCR               0x00000200      /* secondary (AC_SDIN1) codec ready */
 145 #define   ICH_PCR               0x00000100      /* primary (AC_SDIN0) codec ready */
 146 #define   ICH_MCINT             0x00000080      /* MIC capture interrupt */
 147 #define   ICH_POINT             0x00000040      /* playback interrupt */
 148 #define   ICH_PIINT             0x00000020      /* capture interrupt */
 149 #define   ICH_NVSPINT           0x00000010      /* nforce spdif interrupt */
 150 #define   ICH_MOINT             0x00000004      /* modem playback interrupt */
 151 #define   ICH_MIINT             0x00000002      /* modem capture interrupt */
 152 #define   ICH_GSCI              0x00000001      /* GPI status change interrupt */
 153 #define ICH_REG_ACC_SEMA                0x44    /* byte - codec write semaphore */
 154 #define   ICH_CAS               0x01            /* codec access semaphore */
 155
 156 #define ICH_MAX_FRAGS           32              /* max hw frags */
 157
 158
 159 /*
 160  *
 161  */
 162
 163 enum { ICHD_MDMIN, ICHD_MDMOUT, ICHD_MDMLAST = ICHD_MDMOUT };
 164 enum { ALID_MDMIN, ALID_MDMOUT, ALID_MDMLAST = ALID_MDMOUT };
 165
 166 #define get_ichdev(substream) (substream->runtime->private_data)
 167
 168 struct ichdev {
 169         unsigned int ichd;                      /* ich device number */
 170         unsigned long reg_offset;               /* offset to bmaddr */
 171         u32 *bdbar;                             /* CPU address (32bit) */
 172         unsigned int bdbar_addr;                /* PCI bus address (32bit) */
 173         struct snd_pcm_substream *substream;
 174         unsigned int physbuf;                   /* physical address (32bit) */
 175         unsigned int size;
 176         unsigned int fragsize;
 177         unsigned int fragsize1;
 178         unsigned int position;
 179         int frags;
 180         int lvi;
 181         int lvi_frag;
 182         int civ;
 183         int ack;
 184         int ack_reload;
 185         unsigned int ack_bit;
 186         unsigned int roff_sr;
 187         unsigned int roff_picb;
 188         unsigned int int_sta_mask;              /* interrupt status mask */
 189         unsigned int ali_slot;                  /* ALI DMA slot */
 190         struct snd_ac97 *ac97;
 191 };
 192
 193 struct intel8x0m {
 194         unsigned int device_type;
 195
 196         int irq;
 197
 198         void __iomem *addr;
 199         void __iomem *bmaddr;
 200
 201         struct pci_dev *pci;
 202         struct snd_card *card;
 203
 204         int pcm_devs;
 205         struct snd_pcm *pcm[2];
 206         struct ichdev ichd[2];
 207
 208         unsigned int in_ac97_init: 1;
 209
 210         struct snd_ac97_bus *ac97_bus;
 211         struct snd_ac97 *ac97;
 212
 213         spinlock_t reg_lock;
 214
 215         struct snd_dma_buffer bdbars;
 216         u32 bdbars_count;
 217         u32 int_sta_reg;                /* interrupt status register */
 218         u32 int_sta_mask;               /* interrupt status mask */
 219         unsigned int pcm_pos_shift;
 220 };
 221
 222 static DEFINE_PCI_DEVICE_TABLE(snd_intel8x0m_ids) = {
 223         { PCI_VDEVICE(INTEL, 0x2416), DEVICE_INTEL },   /* 82801AA */
 224         { PCI_VDEVICE(INTEL, 0x2426), DEVICE_INTEL },   /* 82901AB */
 225         { PCI_VDEVICE(INTEL, 0x2446), DEVICE_INTEL },   /* 82801BA */
 226         { PCI_VDEVICE(INTEL, 0x2486), DEVICE_INTEL },   /* ICH3 */
 227         { PCI_VDEVICE(INTEL, 0x24c6), DEVICE_INTEL }, /* ICH4 */
 228         { PCI_VDEVICE(INTEL, 0x24d6), DEVICE_INTEL }, /* ICH5 */
 229         { PCI_VDEVICE(INTEL, 0x266d), DEVICE_INTEL },   /* ICH6 */
 230         { PCI_VDEVICE(INTEL, 0x27dd), DEVICE_INTEL },   /* ICH7 */
 231         { PCI_VDEVICE(INTEL, 0x7196), DEVICE_INTEL },   /* 440MX */
 232         { PCI_VDEVICE(AMD, 0x7446), DEVICE_INTEL },     /* AMD768 */
 233         { PCI_VDEVICE(SI, 0x7013), DEVICE_SIS },        /* SI7013 */
 234         { PCI_VDEVICE(NVIDIA, 0x01c1), DEVICE_NFORCE }, /* NFORCE */
 235         { PCI_VDEVICE(NVIDIA, 0x0069), DEVICE_NFORCE }, /* NFORCE2 */
 236         { PCI_VDEVICE(NVIDIA, 0x0089), DEVICE_NFORCE }, /* NFORCE2s */
 237         { PCI_VDEVICE(NVIDIA, 0x00d9), DEVICE_NFORCE }, /* NFORCE3 */
 238         { PCI_VDEVICE(AMD, 0x746e), DEVICE_INTEL },     /* AMD8111 */
 239 #if 0
 240         { PCI_VDEVICE(AL, 0x5455), DEVICE_ALI },   /* Ali5455 */
 241 #endif
 242         { 0, }
 243 };
 244
 245 MODULE_DEVICE_TABLE(pci, snd_intel8x0m_ids);
 246
 247 /*
 248  *  Lowlevel I/O - busmaster
 249  */
 250
 251 static inline u8 igetbyte(struct intel8x0m *chip, u32 offset)
 252 {
 253         return ioread8(chip->bmaddr + offset);
 254 }
 255
 256 static inline u16 igetword(struct intel8x0m *chip, u32 offset)
 257 {
 258         return ioread16(chip->bmaddr + offset);
 259 }
 260
 261 static inline u32 igetdword(struct intel8x0m *chip, u32 offset)
 262 {
 263         return ioread32(chip->bmaddr + offset);
 264 }
 265
 266 static inline void iputbyte(struct intel8x0m *chip, u32 offset, u8 val)
 267 {
 268         iowrite8(val, chip->bmaddr + offset);
 269 }
 270
 271 static inline void iputword(struct intel8x0m *chip, u32 offset, u16 val)
 272 {
 273         iowrite16(val, chip->bmaddr + offset);
 274 }
 275
 276 static inline void iputdword(struct intel8x0m *chip, u32 offset, u32 val)
 277 {
 278         iowrite32(val, chip->bmaddr + offset);
 279 }
 280
 281 /*
 282  *  Lowlevel I/O - AC'97 registers
 283  */
 284
 285 static inline u16 iagetword(struct intel8x0m *chip, u32 offset)
 286 {
 287         return ioread16(chip->addr + offset);
 288 }
 289
 290 static inline void iaputword(struct intel8x0m *chip, u32 offset, u16 val)
 291 {
 292         iowrite16(val, chip->addr + offset);
 293 }
 294
 295 /*
 296  *  Basic I/O
 297  */
 298
 299 /*
 300  * access to AC97 codec via normal i/o (for ICH and SIS7013)
 301  */
 302
 303 /* return the GLOB_STA bit for the corresponding codec */
 304 static unsigned int get_ich_codec_bit(struct intel8x0m *chip, unsigned int codec)
 305 {
 306         static unsigned int codec_bit[3] = {
 307                 ICH_PCR, ICH_SCR, ICH_TCR
 308         };
 309         if (snd_BUG_ON(codec >= 3))
 310                 return ICH_PCR;
 311         return codec_bit[codec];
 312 }
 313
 314 static int snd_intel8x0m_codec_semaphore(struct intel8x0m *chip, unsigned int codec)
 315 {
 316         int time;
 317
 318         if (codec > 1)
 319                 return -EIO;
 320         codec = get_ich_codec_bit(chip, codec);
 321
 322         /* codec ready ? */
 323         if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
 324                 return -EIO;
 325
 326         /* Anyone holding a semaphore for 1 msec should be shot... */
 327         time = 100;
 328         do {
 329                 if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
 330                         return 0;
 331                 udelay(10);
 332         } while (time--);
 333
 334         /* access to some forbidden (non existent) ac97 registers will not
 335          * reset the semaphore. So even if you don't get the semaphore, still
 336          * continue the access. We don't need the semaphore anyway. */
 337         snd_printk(KERN_ERR "codec_semaphore: semaphore is not ready [0x%x][0x%x]\n",
 338                         igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
 339         iagetword(chip, 0);     /* clear semaphore flag */
 340         /* I don't care about the semaphore */
 341         return -EBUSY;
 342 }
 343
 344 static void snd_intel8x0m_codec_write(struct snd_ac97 *ac97,
 345                                       unsigned short reg,
 346                                       unsigned short val)
 347 {
 348         struct intel8x0m *chip = ac97->private_data;
 349
 350         if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
 351                 if (! chip->in_ac97_init)
 352                         snd_printk(KERN_ERR "codec_write %d: semaphore is not ready for register 0x%x\n", ac97->num, reg);
 353         }
 354         iaputword(chip, reg + ac97->num * 0x80, val);
 355 }
 356
 357 static unsigned short snd_intel8x0m_codec_read(struct snd_ac97 *ac97,
 358                                                unsigned short reg)
 359 {
 360         struct intel8x0m *chip = ac97->private_data;
 361         unsigned short res;
 362         unsigned int tmp;
 363
 364         if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
 365                 if (! chip->in_ac97_init)
 366                         snd_printk(KERN_ERR "codec_read %d: semaphore is not ready for register 0x%x\n", ac97->num, reg);
 367                 res = 0xffff;
 368         } else {
 369                 res = iagetword(chip, reg + ac97->num * 0x80);
 370                 if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
 371                         /* reset RCS and preserve other R/WC bits */
 372                         iputdword(chip, ICHREG(GLOB_STA),
 373                                   tmp & ~(ICH_SRI|ICH_PRI|ICH_TRI|ICH_GSCI));
 374                         if (! chip->in_ac97_init)
 375                                 snd_printk(KERN_ERR "codec_read %d: read timeout for register 0x%x\n", ac97->num, reg);
 376                         res = 0xffff;
 377                 }
 378         }
 379         if (reg == AC97_GPIO_STATUS)
 380                 iagetword(chip, 0); /* clear semaphore */
 381         return res;
 382 }
 383
 384
 385 /*
 386  * DMA I/O
 387  */
 388 static void snd_intel8x0m_setup_periods(struct intel8x0m *chip, struct ichdev *ichdev)
 389 {
 390         int idx;
 391         u32 *bdbar = ichdev->bdbar;
 392         unsigned long port = ichdev->reg_offset;
 393
 394         iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
 395         if (ichdev->size == ichdev->fragsize) {
 396                 ichdev->ack_reload = ichdev->ack = 2;
 397                 ichdev->fragsize1 = ichdev->fragsize >> 1;
 398                 for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
 399                         bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
 400                         bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 401                                                      ichdev->fragsize1 >> chip->pcm_pos_shift);
 402                         bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
 403                         bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 404                                                      ichdev->fragsize1 >> chip->pcm_pos_shift);
 405                 }
 406                 ichdev->frags = 2;
 407         } else {
 408                 ichdev->ack_reload = ichdev->ack = 1;
 409                 ichdev->fragsize1 = ichdev->fragsize;
 410                 for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {
 411                         bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf + (((idx >> 1) * ichdev->fragsize) % ichdev->size));
 412                         bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 413                                                      ichdev->fragsize >> chip->pcm_pos_shift);
 414                         /*
 415                         printk(KERN_DEBUG "bdbar[%i] = 0x%x [0x%x]\n",
 416                                idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
 417                         */
 418                 }
 419                 ichdev->frags = ichdev->size / ichdev->fragsize;
 420         }
 421         iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
 422         ichdev->civ = 0;
 423         iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
 424         ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
 425         ichdev->position = 0;
 426 #if 0
 427         printk(KERN_DEBUG "lvi_frag = %i, frags = %i, period_size = 0x%x, "
 428                "period_size1 = 0x%x\n",
 429                ichdev->lvi_frag, ichdev->frags, ichdev->fragsize,
 430                ichdev->fragsize1);
 431 #endif
 432         /* clear interrupts */
 433         iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
 434 }
 435
 436 /*
 437  *  Interrupt handler
 438  */
 439
 440 static inline void snd_intel8x0m_update(struct intel8x0m *chip, struct ichdev *ichdev)
 441 {
 442         unsigned long port = ichdev->reg_offset;
 443         int civ, i, step;
 444         int ack = 0;
 445
 446         civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
 447         if (civ == ichdev->civ) {
 448                 // snd_printd("civ same %d\n", civ);
 449                 step = 1;
 450                 ichdev->civ++;
 451                 ichdev->civ &= ICH_REG_LVI_MASK;
 452         } else {
 453                 step = civ - ichdev->civ;
 454                 if (step < 0)
 455                         step += ICH_REG_LVI_MASK + 1;
 456                 // if (step != 1)
 457                 //      snd_printd("step = %d, %d -> %d\n", step, ichdev->civ, civ);
 458                 ichdev->civ = civ;
 459         }
 460
 461         ichdev->position += step * ichdev->fragsize1;
 462         ichdev->position %= ichdev->size;
 463         ichdev->lvi += step;
 464         ichdev->lvi &= ICH_REG_LVI_MASK;
 465         iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
 466         for (i = 0; i < step; i++) {
 467                 ichdev->lvi_frag++;
 468                 ichdev->lvi_frag %= ichdev->frags;
 469                 ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf +
 470                                                              ichdev->lvi_frag *
 471                                                              ichdev->fragsize1);
 472 #if 0
 473                 printk(KERN_DEBUG "new: bdbar[%i] = 0x%x [0x%x], "
 474                        "prefetch = %i, all = 0x%x, 0x%x\n",
 475                        ichdev->lvi * 2, ichdev->bdbar[ichdev->lvi * 2],
 476                        ichdev->bdbar[ichdev->lvi * 2 + 1], inb(ICH_REG_OFF_PIV + port),
 477                        inl(port + 4), inb(port + ICH_REG_OFF_CR));
 478 #endif
 479                 if (--ichdev->ack == 0) {
 480                         ichdev->ack = ichdev->ack_reload;
 481                         ack = 1;
 482                 }
 483         }
 484         if (ack && ichdev->substream) {
 485                 spin_unlock(&chip->reg_lock);
 486                 snd_pcm_period_elapsed(ichdev->substream);
 487                 spin_lock(&chip->reg_lock);
 488         }
 489         iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
 490 }
 491
 492 static irqreturn_t snd_intel8x0m_interrupt(int irq, void *dev_id)
 493 {
 494         struct intel8x0m *chip = dev_id;
 495         struct ichdev *ichdev;
 496         unsigned int status;
 497         unsigned int i;
 498
 499         spin_lock(&chip->reg_lock);
 500         status = igetdword(chip, chip->int_sta_reg);
 501         if (status == 0xffffffff) { /* we are not yet resumed */
 502                 spin_unlock(&chip->reg_lock);
 503                 return IRQ_NONE;
 504         }
 505         if ((status & chip->int_sta_mask) == 0) {
 506                 if (status)
 507                         iputdword(chip, chip->int_sta_reg, status);
 508                 spin_unlock(&chip->reg_lock);
 509                 return IRQ_NONE;
 510         }
 511
 512         for (i = 0; i < chip->bdbars_count; i++) {
 513                 ichdev = &chip->ichd[i];
 514                 if (status & ichdev->int_sta_mask)
 515                         snd_intel8x0m_update(chip, ichdev);
 516         }
 517
 518         /* ack them */
 519         iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
 520         spin_unlock(&chip->reg_lock);
 521
 522         return IRQ_HANDLED;
 523 }
 524
 525 /*
 526  *  PCM part
 527  */
 528
 529 static int snd_intel8x0m_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 530 {
 531         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 532         struct ichdev *ichdev = get_ichdev(substream);
 533         unsigned char val = 0;
 534         unsigned long port = ichdev->reg_offset;
 535
 536         switch (cmd) {
 537         case SNDRV_PCM_TRIGGER_START:
 538         case SNDRV_PCM_TRIGGER_RESUME:
 539                 val = ICH_IOCE | ICH_STARTBM;
 540                 break;
 541         case SNDRV_PCM_TRIGGER_STOP:
 542         case SNDRV_PCM_TRIGGER_SUSPEND:
 543                 val = 0;
 544                 break;
 545         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 546                 val = ICH_IOCE;
 547                 break;
 548         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 549                 val = ICH_IOCE | ICH_STARTBM;
 550                 break;
 551         default:
 552                 return -EINVAL;
 553         }
 554         iputbyte(chip, port + ICH_REG_OFF_CR, val);
 555         if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 556                 /* wait until DMA stopped */
 557                 while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
 558                 /* reset whole DMA things */
 559                 iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
 560         }
 561         return 0;
 562 }
 563
 564 static int snd_intel8x0m_hw_params(struct snd_pcm_substream *substream,
 565                                   struct snd_pcm_hw_params *hw_params)
 566 {
 567         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 568 }
 569
 570 static int snd_intel8x0m_hw_free(struct snd_pcm_substream *substream)
 571 {
 572         return snd_pcm_lib_free_pages(substream);
 573 }
 574
 575 static snd_pcm_uframes_t snd_intel8x0m_pcm_pointer(struct snd_pcm_substream *substream)
 576 {
 577         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 578         struct ichdev *ichdev = get_ichdev(substream);
 579         size_t ptr1, ptr;
 580
 581         ptr1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb) << chip->pcm_pos_shift;
 582         if (ptr1 != 0)
 583                 ptr = ichdev->fragsize1 - ptr1;
 584         else
 585                 ptr = 0;
 586         ptr += ichdev->position;
 587         if (ptr >= ichdev->size)
 588                 return 0;
 589         return bytes_to_frames(substream->runtime, ptr);
 590 }
 591
 592 static int snd_intel8x0m_pcm_prepare(struct snd_pcm_substream *substream)
 593 {
 594         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 595         struct snd_pcm_runtime *runtime = substream->runtime;
 596         struct ichdev *ichdev = get_ichdev(substream);
 597
 598         ichdev->physbuf = runtime->dma_addr;
 599         ichdev->size = snd_pcm_lib_buffer_bytes(substream);
 600         ichdev->fragsize = snd_pcm_lib_period_bytes(substream);
 601         snd_ac97_write(ichdev->ac97, AC97_LINE1_RATE, runtime->rate);
 602         snd_ac97_write(ichdev->ac97, AC97_LINE1_LEVEL, 0);
 603         snd_intel8x0m_setup_periods(chip, ichdev);
 604         return 0;
 605 }
 606
 607 static struct snd_pcm_hardware snd_intel8x0m_stream =
 608 {
 609         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 610                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 611                                  SNDRV_PCM_INFO_MMAP_VALID |
 612                                  SNDRV_PCM_INFO_PAUSE |
 613                                  SNDRV_PCM_INFO_RESUME),
 614         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
 615         .rates =                SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
 616         .rate_min =             8000,
 617         .rate_max =             16000,
 618         .channels_min =         1,
 619         .channels_max =         1,
 620         .buffer_bytes_max =     64 * 1024,
 621         .period_bytes_min =     32,
 622         .period_bytes_max =     64 * 1024,
 623         .periods_min =          1,
 624         .periods_max =          1024,
 625         .fifo_size =            0,
 626 };
 627
 628
 629 static int snd_intel8x0m_pcm_open(struct snd_pcm_substream *substream, struct ichdev *ichdev)
 630 {
 631         static unsigned int rates[] = { 8000,  9600, 12000, 16000 };
 632         static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
 633                 .count = ARRAY_SIZE(rates),
 634                 .list = rates,
 635                 .mask = 0,
 636         };
 637         struct snd_pcm_runtime *runtime = substream->runtime;
 638         int err;
 639
 640         ichdev->substream = substream;
 641         runtime->hw = snd_intel8x0m_stream;
 642         err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 643                                          &hw_constraints_rates);
 644         if ( err < 0 )
 645                 return err;
 646         runtime->private_data = ichdev;
 647         return 0;
 648 }
 649
 650 static int snd_intel8x0m_playback_open(struct snd_pcm_substream *substream)
 651 {
 652         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 653
 654         return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMOUT]);
 655 }
 656
 657 static int snd_intel8x0m_playback_close(struct snd_pcm_substream *substream)
 658 {
 659         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 660
 661         chip->ichd[ICHD_MDMOUT].substream = NULL;
 662         return 0;
 663 }
 664
 665 static int snd_intel8x0m_capture_open(struct snd_pcm_substream *substream)
 666 {
 667         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 668
 669         return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMIN]);
 670 }
 671
 672 static int snd_intel8x0m_capture_close(struct snd_pcm_substream *substream)
 673 {
 674         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 675
 676         chip->ichd[ICHD_MDMIN].substream = NULL;
 677         return 0;
 678 }
 679
 680
 681 static struct snd_pcm_ops snd_intel8x0m_playback_ops = {
 682         .open =         snd_intel8x0m_playback_open,
 683         .close =        snd_intel8x0m_playback_close,
 684         .ioctl =        snd_pcm_lib_ioctl,
 685         .hw_params =    snd_intel8x0m_hw_params,
 686         .hw_free =      snd_intel8x0m_hw_free,
 687         .prepare =      snd_intel8x0m_pcm_prepare,
 688         .trigger =      snd_intel8x0m_pcm_trigger,
 689         .pointer =      snd_intel8x0m_pcm_pointer,
 690 };
 691
 692 static struct snd_pcm_ops snd_intel8x0m_capture_ops = {
 693         .open =         snd_intel8x0m_capture_open,
 694         .close =        snd_intel8x0m_capture_close,
 695         .ioctl =        snd_pcm_lib_ioctl,
 696         .hw_params =    snd_intel8x0m_hw_params,
 697         .hw_free =      snd_intel8x0m_hw_free,
 698         .prepare =      snd_intel8x0m_pcm_prepare,
 699         .trigger =      snd_intel8x0m_pcm_trigger,
 700         .pointer =      snd_intel8x0m_pcm_pointer,
 701 };
 702
 703
 704 struct ich_pcm_table {
 705         char *suffix;
 706         struct snd_pcm_ops *playback_ops;
 707         struct snd_pcm_ops *capture_ops;
 708         size_t prealloc_size;
 709         size_t prealloc_max_size;
 710         int ac97_idx;
 711 };
 712
 713 static int __devinit snd_intel8x0m_pcm1(struct intel8x0m *chip, int device,
 714                                        struct ich_pcm_table *rec)
 715 {
 716         struct snd_pcm *pcm;
 717         int err;
 718         char name[32];
 719
 720         if (rec->suffix)
 721                 sprintf(name, "Intel ICH - %s", rec->suffix);
 722         else
 723                 strcpy(name, "Intel ICH");
 724         err = snd_pcm_new(chip->card, name, device,
 725                           rec->playback_ops ? 1 : 0,
 726                           rec->capture_ops ? 1 : 0, &pcm);
 727         if (err < 0)
 728                 return err;
 729
 730         if (rec->playback_ops)
 731                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, rec->playback_ops);
 732         if (rec->capture_ops)
 733                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, rec->capture_ops);
 734
 735         pcm->private_data = chip;
 736         pcm->info_flags = 0;
 737         pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
 738         if (rec->suffix)
 739                 sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
 740         else
 741                 strcpy(pcm->name, chip->card->shortname);
 742         chip->pcm[device] = pcm;
 743
 744         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 745                                               snd_dma_pci_data(chip->pci),
 746                                               rec->prealloc_size,
 747                                               rec->prealloc_max_size);
 748
 749         return 0;
 750 }
 751
 752 static struct ich_pcm_table intel_pcms[] __devinitdata = {
 753         {
 754                 .suffix = "Modem",
 755                 .playback_ops = &snd_intel8x0m_playback_ops,
 756                 .capture_ops = &snd_intel8x0m_capture_ops,
 757                 .prealloc_size = 32 * 1024,
 758                 .prealloc_max_size = 64 * 1024,
 759         },
 760 };
 761
 762 static int __devinit snd_intel8x0m_pcm(struct intel8x0m *chip)
 763 {
 764         int i, tblsize, device, err;
 765         struct ich_pcm_table *tbl, *rec;
 766
 767 #if 1
 768         tbl = intel_pcms;
 769         tblsize = 1;
 770 #else
 771         switch (chip->device_type) {
 772         case DEVICE_NFORCE:
 773                 tbl = nforce_pcms;
 774                 tblsize = ARRAY_SIZE(nforce_pcms);
 775                 break;
 776         case DEVICE_ALI:
 777                 tbl = ali_pcms;
 778                 tblsize = ARRAY_SIZE(ali_pcms);
 779                 break;
 780         default:
 781                 tbl = intel_pcms;
 782                 tblsize = 2;
 783                 break;
 784         }
 785 #endif
 786         device = 0;
 787         for (i = 0; i < tblsize; i++) {
 788                 rec = tbl + i;
 789                 if (i > 0 && rec->ac97_idx) {
 790                         /* activate PCM only when associated AC'97 codec */
 791                         if (! chip->ichd[rec->ac97_idx].ac97)
 792                                 continue;
 793                 }
 794                 err = snd_intel8x0m_pcm1(chip, device, rec);
 795                 if (err < 0)
 796                         return err;
 797                 device++;
 798         }
 799
 800         chip->pcm_devs = device;
 801         return 0;
 802 }
 803
 804
 805 /*
 806  *  Mixer part
 807  */
 808
 809 static void snd_intel8x0m_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
 810 {
 811         struct intel8x0m *chip = bus->private_data;
 812         chip->ac97_bus = NULL;
 813 }
 814
 815 static void snd_intel8x0m_mixer_free_ac97(struct snd_ac97 *ac97)
 816 {
 817         struct intel8x0m *chip = ac97->private_data;
 818         chip->ac97 = NULL;
 819 }
 820
 821
 822 static int __devinit snd_intel8x0m_mixer(struct intel8x0m *chip, int ac97_clock)
 823 {
 824         struct snd_ac97_bus *pbus;
 825         struct snd_ac97_template ac97;
 826         struct snd_ac97 *x97;
 827         int err;
 828         unsigned int glob_sta = 0;
 829         static struct snd_ac97_bus_ops ops = {
 830                 .write = snd_intel8x0m_codec_write,
 831                 .read = snd_intel8x0m_codec_read,
 832         };
 833
 834         chip->in_ac97_init = 1;
 835
 836         memset(&ac97, 0, sizeof(ac97));
 837         ac97.private_data = chip;
 838         ac97.private_free = snd_intel8x0m_mixer_free_ac97;
 839         ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
 840
 841         glob_sta = igetdword(chip, ICHREG(GLOB_STA));
 842
 843         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
 844                 goto __err;
 845         pbus->private_free = snd_intel8x0m_mixer_free_ac97_bus;
 846         if (ac97_clock >= 8000 && ac97_clock <= 48000)
 847                 pbus->clock = ac97_clock;
 848         chip->ac97_bus = pbus;
 849
 850         ac97.pci = chip->pci;
 851         ac97.num = glob_sta & ICH_SCR ? 1 : 0;
 852         if ((err = snd_ac97_mixer(pbus, &ac97, &x97)) < 0) {
 853                 snd_printk(KERN_ERR "Unable to initialize codec #%d\n", ac97.num);
 854                 if (ac97.num == 0)
 855                         goto __err;
 856                 return err;
 857         }
 858         chip->ac97 = x97;
 859         if(ac97_is_modem(x97) && !chip->ichd[ICHD_MDMIN].ac97) {
 860                 chip->ichd[ICHD_MDMIN].ac97 = x97;
 861                 chip->ichd[ICHD_MDMOUT].ac97 = x97;
 862         }
 863
 864         chip->in_ac97_init = 0;
 865         return 0;
 866
 867  __err:
 868         /* clear the cold-reset bit for the next chance */
 869         if (chip->device_type != DEVICE_ALI)
 870                 iputdword(chip, ICHREG(GLOB_CNT),
 871                           igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_AC97COLD);
 872         return err;
 873 }
 874
 875
 876 /*
 877  *
 878  */
 879
 880 static int snd_intel8x0m_ich_chip_init(struct intel8x0m *chip, int probing)
 881 {
 882         unsigned long end_time;
 883         unsigned int cnt, status, nstatus;
 884
 885         /* put logic to right state */
 886         /* first clear status bits */
 887         status = ICH_RCS | ICH_MIINT | ICH_MOINT;
 888         cnt = igetdword(chip, ICHREG(GLOB_STA));
 889         iputdword(chip, ICHREG(GLOB_STA), cnt & status);
 890
 891         /* ACLink on, 2 channels */
 892         cnt = igetdword(chip, ICHREG(GLOB_CNT));
 893         cnt &= ~(ICH_ACLINK);
 894         /* finish cold or do warm reset */
 895         cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM;
 896         iputdword(chip, ICHREG(GLOB_CNT), cnt);
 897         usleep_range(500, 1000); /* give warm reset some time */
 898         end_time = jiffies + HZ / 4;
 899         do {
 900                 if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)
 901                         goto __ok;
 902                 schedule_timeout_uninterruptible(1);
 903         } while (time_after_eq(end_time, jiffies));
 904         snd_printk(KERN_ERR "AC'97 warm reset still in progress? [0x%x]\n",
 905                    igetdword(chip, ICHREG(GLOB_CNT)));
 906         return -EIO;
 907
 908       __ok:
 909         if (probing) {
 910                 /* wait for any codec ready status.
 911                  * Once it becomes ready it should remain ready
 912                  * as long as we do not disable the ac97 link.
 913                  */
 914                 end_time = jiffies + HZ;
 915                 do {
 916                         status = igetdword(chip, ICHREG(GLOB_STA)) &
 917                                 (ICH_PCR | ICH_SCR | ICH_TCR);
 918                         if (status)
 919                                 break;
 920                         schedule_timeout_uninterruptible(1);
 921                 } while (time_after_eq(end_time, jiffies));
 922                 if (! status) {
 923                         /* no codec is found */
 924                         snd_printk(KERN_ERR "codec_ready: codec is not ready [0x%x]\n",
 925                                    igetdword(chip, ICHREG(GLOB_STA)));
 926                         return -EIO;
 927                 }
 928
 929                 /* up to two codecs (modem cannot be tertiary with ICH4) */
 930                 nstatus = ICH_PCR | ICH_SCR;
 931
 932                 /* wait for other codecs ready status. */
 933                 end_time = jiffies + HZ / 4;
 934                 while (status != nstatus && time_after_eq(end_time, jiffies)) {
 935                         schedule_timeout_uninterruptible(1);
 936                         status |= igetdword(chip, ICHREG(GLOB_STA)) & nstatus;
 937                 }
 938
 939         } else {
 940                 /* resume phase */
 941                 status = 0;
 942                 if (chip->ac97)
 943                         status |= get_ich_codec_bit(chip, chip->ac97->num);
 944                 /* wait until all the probed codecs are ready */
 945                 end_time = jiffies + HZ;
 946                 do {
 947                         nstatus = igetdword(chip, ICHREG(GLOB_STA)) &
 948                                 (ICH_PCR | ICH_SCR | ICH_TCR);
 949                         if (status == nstatus)
 950                                 break;
 951                         schedule_timeout_uninterruptible(1);
 952                 } while (time_after_eq(end_time, jiffies));
 953         }
 954
 955         if (chip->device_type == DEVICE_SIS) {
 956                 /* unmute the output on SIS7012 */
 957                 iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
 958         }
 959
 960         return 0;
 961 }
 962
 963 static int snd_intel8x0m_chip_init(struct intel8x0m *chip, int probing)
 964 {
 965         unsigned int i;
 966         int err;
 967
 968         if ((err = snd_intel8x0m_ich_chip_init(chip, probing)) < 0)
 969                 return err;
 970         iagetword(chip, 0);     /* clear semaphore flag */
 971
 972         /* disable interrupts */
 973         for (i = 0; i < chip->bdbars_count; i++)
 974                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
 975         /* reset channels */
 976         for (i = 0; i < chip->bdbars_count; i++)
 977                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
 978         /* initialize Buffer Descriptor Lists */
 979         for (i = 0; i < chip->bdbars_count; i++)
 980                 iputdword(chip, ICH_REG_OFF_BDBAR + chip->ichd[i].reg_offset, chip->ichd[i].bdbar_addr);
 981         return 0;
 982 }
 983
 984 static int snd_intel8x0m_free(struct intel8x0m *chip)
 985 {
 986         unsigned int i;
 987
 988         if (chip->irq < 0)
 989                 goto __hw_end;
 990         /* disable interrupts */
 991         for (i = 0; i < chip->bdbars_count; i++)
 992                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
 993         /* reset channels */
 994         for (i = 0; i < chip->bdbars_count; i++)
 995                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
 996  __hw_end:
 997         if (chip->irq >= 0)
 998                 free_irq(chip->irq, chip);
 999         if (chip->bdbars.area)
1000                 snd_dma_free_pages(&chip->bdbars);
1001         if (chip->addr)
1002                 pci_iounmap(chip->pci, chip->addr);
1003         if (chip->bmaddr)
1004                 pci_iounmap(chip->pci, chip->bmaddr);
1005         pci_release_regions(chip->pci);
1006         pci_disable_device(chip->pci);
1007         kfree(chip);
1008         return 0;
1009 }
1010
1011 #ifdef CONFIG_PM
1012 /*
1013  * power management
1014  */
1015 static int intel8x0m_suspend(struct pci_dev *pci, pm_message_t state)
1016 {
1017         struct snd_card *card = pci_get_drvdata(pci);
1018         struct intel8x0m *chip = card->private_data;
1019         int i;
1020
1021         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1022         for (i = 0; i < chip->pcm_devs; i++)
1023                 snd_pcm_suspend_all(chip->pcm[i]);
1024         snd_ac97_suspend(chip->ac97);
1025         if (chip->irq >= 0) {
1026                 free_irq(chip->irq, chip);
1027                 chip->irq = -1;
1028         }
1029         pci_disable_device(pci);
1030         pci_save_state(pci);
1031         pci_set_power_state(pci, pci_choose_state(pci, state));
1032         return 0;
1033 }
1034
1035 static int intel8x0m_resume(struct pci_dev *pci)
1036 {
1037         struct snd_card *card = pci_get_drvdata(pci);
1038         struct intel8x0m *chip = card->private_data;
1039
1040         pci_set_power_state(pci, PCI_D0);
1041         pci_restore_state(pci);
1042         if (pci_enable_device(pci) < 0) {
1043                 printk(KERN_ERR "intel8x0m: pci_enable_device failed, "
1044                        "disabling device\n");
1045                 snd_card_disconnect(card);
1046                 return -EIO;
1047         }
1048         pci_set_master(pci);
1049         if (request_irq(pci->irq, snd_intel8x0m_interrupt,
1050                         IRQF_SHARED, card->shortname, chip)) {
1051                 printk(KERN_ERR "intel8x0m: unable to grab IRQ %d, "
1052                        "disabling device\n", pci->irq);
1053                 snd_card_disconnect(card);
1054                 return -EIO;
1055         }
1056         chip->irq = pci->irq;
1057         snd_intel8x0m_chip_init(chip, 0);
1058         snd_ac97_resume(chip->ac97);
1059
1060         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1061         return 0;
1062 }
1063 #endif /* CONFIG_PM */
1064
1065 #ifdef CONFIG_PROC_FS
1066 static void snd_intel8x0m_proc_read(struct snd_info_entry * entry,
1067                                    struct snd_info_buffer *buffer)
1068 {
1069         struct intel8x0m *chip = entry->private_data;
1070         unsigned int tmp;
1071
1072         snd_iprintf(buffer, "Intel8x0m\n\n");
1073         if (chip->device_type == DEVICE_ALI)
1074                 return;
1075         tmp = igetdword(chip, ICHREG(GLOB_STA));
1076         snd_iprintf(buffer, "Global control        : 0x%08x\n",
1077                     igetdword(chip, ICHREG(GLOB_CNT)));
1078         snd_iprintf(buffer, "Global status         : 0x%08x\n", tmp);
1079         snd_iprintf(buffer, "AC'97 codecs ready    :%s%s%s%s\n",
1080                         tmp & ICH_PCR ? " primary" : "",
1081                         tmp & ICH_SCR ? " secondary" : "",
1082                         tmp & ICH_TCR ? " tertiary" : "",
1083                         (tmp & (ICH_PCR | ICH_SCR | ICH_TCR)) == 0 ? " none" : "");
1084 }
1085
1086 static void __devinit snd_intel8x0m_proc_init(struct intel8x0m * chip)
1087 {
1088         struct snd_info_entry *entry;
1089
1090         if (! snd_card_proc_new(chip->card, "intel8x0m", &entry))
1091                 snd_info_set_text_ops(entry, chip, snd_intel8x0m_proc_read);
1092 }
1093 #else /* !CONFIG_PROC_FS */
1094 #define snd_intel8x0m_proc_init(chip)
1095 #endif /* CONFIG_PROC_FS */
1096
1097
1098 static int snd_intel8x0m_dev_free(struct snd_device *device)
1099 {
1100         struct intel8x0m *chip = device->device_data;
1101         return snd_intel8x0m_free(chip);
1102 }
1103
1104 struct ich_reg_info {
1105         unsigned int int_sta_mask;
1106         unsigned int offset;
1107 };
1108
1109 static int __devinit snd_intel8x0m_create(struct snd_card *card,
1110                                          struct pci_dev *pci,
1111                                          unsigned long device_type,
1112                                          struct intel8x0m **r_intel8x0m)
1113 {
1114         struct intel8x0m *chip;
1115         int err;
1116         unsigned int i;
1117         unsigned int int_sta_masks;
1118         struct ichdev *ichdev;
1119         static struct snd_device_ops ops = {
1120                 .dev_free =     snd_intel8x0m_dev_free,
1121         };
1122         static struct ich_reg_info intel_regs[2] = {
1123                 { ICH_MIINT, 0 },
1124                 { ICH_MOINT, 0x10 },
1125         };
1126         struct ich_reg_info *tbl;
1127
1128         *r_intel8x0m = NULL;
1129
1130         if ((err = pci_enable_device(pci)) < 0)
1131                 return err;
1132
1133         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1134         if (chip == NULL) {
1135                 pci_disable_device(pci);
1136                 return -ENOMEM;
1137         }
1138         spin_lock_init(&chip->reg_lock);
1139         chip->device_type = device_type;
1140         chip->card = card;
1141         chip->pci = pci;
1142         chip->irq = -1;
1143
1144         if ((err = pci_request_regions(pci, card->shortname)) < 0) {
1145                 kfree(chip);
1146                 pci_disable_device(pci);
1147                 return err;
1148         }
1149
1150         if (device_type == DEVICE_ALI) {
1151                 /* ALI5455 has no ac97 region */
1152                 chip->bmaddr = pci_iomap(pci, 0, 0);
1153                 goto port_inited;
1154         }
1155
1156         if (pci_resource_flags(pci, 2) & IORESOURCE_MEM) /* ICH4 and Nforce */
1157                 chip->addr = pci_iomap(pci, 2, 0);
1158         else
1159                 chip->addr = pci_iomap(pci, 0, 0);
1160         if (!chip->addr) {
1161                 snd_printk(KERN_ERR "AC'97 space ioremap problem\n");
1162                 snd_intel8x0m_free(chip);
1163                 return -EIO;
1164         }
1165         if (pci_resource_flags(pci, 3) & IORESOURCE_MEM) /* ICH4 */
1166                 chip->bmaddr = pci_iomap(pci, 3, 0);
1167         else
1168                 chip->bmaddr = pci_iomap(pci, 1, 0);
1169         if (!chip->bmaddr) {
1170                 snd_printk(KERN_ERR "Controller space ioremap problem\n");
1171                 snd_intel8x0m_free(chip);
1172                 return -EIO;
1173         }
1174
1175  port_inited:
1176         if (request_irq(pci->irq, snd_intel8x0m_interrupt, IRQF_SHARED,
1177                         card->shortname, chip)) {
1178                 snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1179                 snd_intel8x0m_free(chip);
1180                 return -EBUSY;
1181         }
1182         chip->irq = pci->irq;
1183         pci_set_master(pci);
1184         synchronize_irq(chip->irq);
1185
1186         /* initialize offsets */
1187         chip->bdbars_count = 2;
1188         tbl = intel_regs;
1189
1190         for (i = 0; i < chip->bdbars_count; i++) {
1191                 ichdev = &chip->ichd[i];
1192                 ichdev->ichd = i;
1193                 ichdev->reg_offset = tbl[i].offset;
1194                 ichdev->int_sta_mask = tbl[i].int_sta_mask;
1195                 if (device_type == DEVICE_SIS) {
1196                         /* SiS 7013 swaps the registers */
1197                         ichdev->roff_sr = ICH_REG_OFF_PICB;
1198                         ichdev->roff_picb = ICH_REG_OFF_SR;
1199                 } else {
1200                         ichdev->roff_sr = ICH_REG_OFF_SR;
1201                         ichdev->roff_picb = ICH_REG_OFF_PICB;
1202                 }
1203                 if (device_type == DEVICE_ALI)
1204                         ichdev->ali_slot = (ichdev->reg_offset - 0x40) / 0x10;
1205         }
1206         /* SIS7013 handles the pcm data in bytes, others are in words */
1207         chip->pcm_pos_shift = (device_type == DEVICE_SIS) ? 0 : 1;
1208
1209         /* allocate buffer descriptor lists */
1210         /* the start of each lists must be aligned to 8 bytes */
1211         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1212                                 chip->bdbars_count * sizeof(u32) * ICH_MAX_FRAGS * 2,
1213                                 &chip->bdbars) < 0) {
1214                 snd_intel8x0m_free(chip);
1215                 return -ENOMEM;
1216         }
1217         /* tables must be aligned to 8 bytes here, but the kernel pages
1218            are much bigger, so we don't care (on i386) */
1219         int_sta_masks = 0;
1220         for (i = 0; i < chip->bdbars_count; i++) {
1221                 ichdev = &chip->ichd[i];
1222                 ichdev->bdbar = ((u32 *)chip->bdbars.area) + (i * ICH_MAX_FRAGS * 2);
1223                 ichdev->bdbar_addr = chip->bdbars.addr + (i * sizeof(u32) * ICH_MAX_FRAGS * 2);
1224                 int_sta_masks |= ichdev->int_sta_mask;
1225         }
1226         chip->int_sta_reg = ICH_REG_GLOB_STA;
1227         chip->int_sta_mask = int_sta_masks;
1228
1229         if ((err = snd_intel8x0m_chip_init(chip, 1)) < 0) {
1230                 snd_intel8x0m_free(chip);
1231                 return err;
1232         }
1233
1234         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1235                 snd_intel8x0m_free(chip);
1236                 return err;
1237         }
1238
1239         snd_card_set_dev(card, &pci->dev);
1240
1241         *r_intel8x0m = chip;
1242         return 0;
1243 }
1244
1245 static struct shortname_table {
1246         unsigned int id;
1247         const char *s;
1248 } shortnames[] __devinitdata = {
1249         { PCI_DEVICE_ID_INTEL_82801AA_6, "Intel 82801AA-ICH" },
1250         { PCI_DEVICE_ID_INTEL_82801AB_6, "Intel 82901AB-ICH0" },
1251         { PCI_DEVICE_ID_INTEL_82801BA_6, "Intel 82801BA-ICH2" },
1252         { PCI_DEVICE_ID_INTEL_440MX_6, "Intel 440MX" },
1253         { PCI_DEVICE_ID_INTEL_82801CA_6, "Intel 82801CA-ICH3" },
1254         { PCI_DEVICE_ID_INTEL_82801DB_6, "Intel 82801DB-ICH4" },
1255         { PCI_DEVICE_ID_INTEL_82801EB_6, "Intel ICH5" },
1256         { PCI_DEVICE_ID_INTEL_ICH6_17, "Intel ICH6" },
1257         { PCI_DEVICE_ID_INTEL_ICH7_19, "Intel ICH7" },
1258         { 0x7446, "AMD AMD768" },
1259         { PCI_DEVICE_ID_SI_7013, "SiS SI7013" },
1260         { PCI_DEVICE_ID_NVIDIA_MCP1_MODEM, "NVidia nForce" },
1261         { PCI_DEVICE_ID_NVIDIA_MCP2_MODEM, "NVidia nForce2" },
1262         { PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM, "NVidia nForce2s" },
1263         { PCI_DEVICE_ID_NVIDIA_MCP3_MODEM, "NVidia nForce3" },
1264         { 0x746e, "AMD AMD8111" },
1265 #if 0
1266         { 0x5455, "ALi M5455" },
1267 #endif
1268         { 0 },
1269 };
1270
1271 static int __devinit snd_intel8x0m_probe(struct pci_dev *pci,
1272                                         const struct pci_device_id *pci_id)
1273 {
1274         struct snd_card *card;
1275         struct intel8x0m *chip;
1276         int err;
1277         struct shortname_table *name;
1278
1279         err = snd_card_create(index, id, THIS_MODULE, 0, &card);
1280         if (err < 0)
1281                 return err;
1282
1283         strcpy(card->driver, "ICH-MODEM");
1284         strcpy(card->shortname, "Intel ICH");
1285         for (name = shortnames; name->id; name++) {
1286                 if (pci->device == name->id) {
1287                         strcpy(card->shortname, name->s);
1288                         break;
1289                 }
1290         }
1291         strcat(card->shortname," Modem");
1292
1293         if ((err = snd_intel8x0m_create(card, pci, pci_id->driver_data, &chip)) < 0) {
1294                 snd_card_free(card);
1295                 return err;
1296         }
1297         card->private_data = chip;
1298
1299         if ((err = snd_intel8x0m_mixer(chip, ac97_clock)) < 0) {
1300                 snd_card_free(card);
1301                 return err;
1302         }
1303         if ((err = snd_intel8x0m_pcm(chip)) < 0) {
1304                 snd_card_free(card);
1305                 return err;
1306         }
1307
1308         snd_intel8x0m_proc_init(chip);
1309
1310         sprintf(card->longname, "%s at irq %i",
1311                 card->shortname, chip->irq);
1312
1313         if ((err = snd_card_register(card)) < 0) {
1314                 snd_card_free(card);
1315                 return err;
1316         }
1317         pci_set_drvdata(pci, card);
1318         return 0;
1319 }
1320
1321 static void __devexit snd_intel8x0m_remove(struct pci_dev *pci)
1322 {
1323         snd_card_free(pci_get_drvdata(pci));
1324         pci_set_drvdata(pci, NULL);
1325 }
1326
1327 static struct pci_driver driver = {
1328         .name = "Intel ICH Modem",
1329         .id_table = snd_intel8x0m_ids,
1330         .probe = snd_intel8x0m_probe,
1331         .remove = __devexit_p(snd_intel8x0m_remove),
1332 #ifdef CONFIG_PM
1333         .suspend = intel8x0m_suspend,
1334         .resume = intel8x0m_resume,
1335 #endif
1336 };
1337
1338
1339 static int __init alsa_card_intel8x0m_init(void)
1340 {
1341         return pci_register_driver(&driver);
1342 }
1343
1344 static void __exit alsa_card_intel8x0m_exit(void)
1345 {
1346         pci_unregister_driver(&driver);
1347 }
1348
1349 module_init(alsa_card_intel8x0m_init)
1350 module_exit(alsa_card_intel8x0m_exit)