sound/pci/intel8x0m.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *   ALSA modem driver for Intel ICH (i8x0) chipsets
   4  *
   5  *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   6  *
   7  *   This is modified (by Sasha Khapyorsky <sashak@alsa-project.org>) version
   8  *   of ALSA ICH sound driver intel8x0.c .
   9  */
  10
  11 #include <linux/io.h>
  12 #include <linux/delay.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/init.h>
  15 #include <linux/pci.h>
  16 #include <linux/slab.h>
  17 #include <linux/module.h>
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/ac97_codec.h>
  21 #include <sound/info.h>
  22 #include <sound/initval.h>
  23
  24 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  25 MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; "
  26                    "SiS 7013; NVidia MCP/2/2S/3 modems");
  27 MODULE_LICENSE("GPL");
  28 MODULE_SUPPORTED_DEVICE("{{Intel,82801AA-ICH},"
  29                 "{Intel,82901AB-ICH0},"
  30                 "{Intel,82801BA-ICH2},"
  31                 "{Intel,82801CA-ICH3},"
  32                 "{Intel,82801DB-ICH4},"
  33                 "{Intel,ICH5},"
  34                 "{Intel,ICH6},"
  35                 "{Intel,ICH7},"
  36                 "{Intel,MX440},"
  37                 "{SiS,7013},"
  38                 "{NVidia,NForce Modem},"
  39                 "{NVidia,NForce2 Modem},"
  40                 "{NVidia,NForce2s Modem},"
  41                 "{NVidia,NForce3 Modem},"
  42                 "{AMD,AMD768}}");
  43
  44 static int index = -2; /* Exclude the first card */
  45 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  46 static int ac97_clock;
  47
  48 module_param(index, int, 0444);
  49 MODULE_PARM_DESC(index, "Index value for Intel i8x0 modemcard.");
  50 module_param(id, charp, 0444);
  51 MODULE_PARM_DESC(id, "ID string for Intel i8x0 modemcard.");
  52 module_param(ac97_clock, int, 0444);
  53 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = auto-detect).");
  54
  55 /* just for backward compatibility */
  56 static bool enable;
  57 module_param(enable, bool, 0444);
  58
  59 /*
  60  *  Direct registers
  61  */
  62 enum { DEVICE_INTEL, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
  63
  64 #define ICHREG(x) ICH_REG_##x
  65
  66 #define DEFINE_REGSET(name,base) \
  67 enum { \
  68         ICH_REG_##name##_BDBAR  = base + 0x0,   /* dword - buffer descriptor list base address */ \
  69         ICH_REG_##name##_CIV    = base + 0x04,  /* byte - current index value */ \
  70         ICH_REG_##name##_LVI    = base + 0x05,  /* byte - last valid index */ \
  71         ICH_REG_##name##_SR     = base + 0x06,  /* byte - status register */ \
  72         ICH_REG_##name##_PICB   = base + 0x08,  /* word - position in current buffer */ \
  73         ICH_REG_##name##_PIV    = base + 0x0a,  /* byte - prefetched index value */ \
  74         ICH_REG_##name##_CR     = base + 0x0b,  /* byte - control register */ \
  75 };
  76
  77 /* busmaster blocks */
  78 DEFINE_REGSET(OFF, 0);          /* offset */
  79
  80 /* values for each busmaster block */
  81
  82 /* LVI */
  83 #define ICH_REG_LVI_MASK                0x1f
  84
  85 /* SR */
  86 #define ICH_FIFOE                       0x10    /* FIFO error */
  87 #define ICH_BCIS                        0x08    /* buffer completion interrupt status */
  88 #define ICH_LVBCI                       0x04    /* last valid buffer completion interrupt */
  89 #define ICH_CELV                        0x02    /* current equals last valid */
  90 #define ICH_DCH                         0x01    /* DMA controller halted */
  91
  92 /* PIV */
  93 #define ICH_REG_PIV_MASK                0x1f    /* mask */
  94
  95 /* CR */
  96 #define ICH_IOCE                        0x10    /* interrupt on completion enable */
  97 #define ICH_FEIE                        0x08    /* fifo error interrupt enable */
  98 #define ICH_LVBIE                       0x04    /* last valid buffer interrupt enable */
  99 #define ICH_RESETREGS                   0x02    /* reset busmaster registers */
 100 #define ICH_STARTBM                     0x01    /* start busmaster operation */
 101
 102
 103 /* global block */
 104 #define ICH_REG_GLOB_CNT                0x3c    /* dword - global control */
 105 #define   ICH_TRIE              0x00000040      /* tertiary resume interrupt enable */
 106 #define   ICH_SRIE              0x00000020      /* secondary resume interrupt enable */
 107 #define   ICH_PRIE              0x00000010      /* primary resume interrupt enable */
 108 #define   ICH_ACLINK            0x00000008      /* AClink shut off */
 109 #define   ICH_AC97WARM          0x00000004      /* AC'97 warm reset */
 110 #define   ICH_AC97COLD          0x00000002      /* AC'97 cold reset */
 111 #define   ICH_GIE               0x00000001      /* GPI interrupt enable */
 112 #define ICH_REG_GLOB_STA                0x40    /* dword - global status */
 113 #define   ICH_TRI               0x20000000      /* ICH4: tertiary (AC_SDIN2) resume interrupt */
 114 #define   ICH_TCR               0x10000000      /* ICH4: tertiary (AC_SDIN2) codec ready */
 115 #define   ICH_BCS               0x08000000      /* ICH4: bit clock stopped */
 116 #define   ICH_SPINT             0x04000000      /* ICH4: S/PDIF interrupt */
 117 #define   ICH_P2INT             0x02000000      /* ICH4: PCM2-In interrupt */
 118 #define   ICH_M2INT             0x01000000      /* ICH4: Mic2-In interrupt */
 119 #define   ICH_SAMPLE_CAP        0x00c00000      /* ICH4: sample capability bits (RO) */
 120 #define   ICH_MULTICHAN_CAP     0x00300000      /* ICH4: multi-channel capability bits (RO) */
 121 #define   ICH_MD3               0x00020000      /* modem power down semaphore */
 122 #define   ICH_AD3               0x00010000      /* audio power down semaphore */
 123 #define   ICH_RCS               0x00008000      /* read completion status */
 124 #define   ICH_BIT3              0x00004000      /* bit 3 slot 12 */
 125 #define   ICH_BIT2              0x00002000      /* bit 2 slot 12 */
 126 #define   ICH_BIT1              0x00001000      /* bit 1 slot 12 */
 127 #define   ICH_SRI               0x00000800      /* secondary (AC_SDIN1) resume interrupt */
 128 #define   ICH_PRI               0x00000400      /* primary (AC_SDIN0) resume interrupt */
 129 #define   ICH_SCR               0x00000200      /* secondary (AC_SDIN1) codec ready */
 130 #define   ICH_PCR               0x00000100      /* primary (AC_SDIN0) codec ready */
 131 #define   ICH_MCINT             0x00000080      /* MIC capture interrupt */
 132 #define   ICH_POINT             0x00000040      /* playback interrupt */
 133 #define   ICH_PIINT             0x00000020      /* capture interrupt */
 134 #define   ICH_NVSPINT           0x00000010      /* nforce spdif interrupt */
 135 #define   ICH_MOINT             0x00000004      /* modem playback interrupt */
 136 #define   ICH_MIINT             0x00000002      /* modem capture interrupt */
 137 #define   ICH_GSCI              0x00000001      /* GPI status change interrupt */
 138 #define ICH_REG_ACC_SEMA                0x44    /* byte - codec write semaphore */
 139 #define   ICH_CAS               0x01            /* codec access semaphore */
 140
 141 #define ICH_MAX_FRAGS           32              /* max hw frags */
 142
 143
 144 /*
 145  *
 146  */
 147
 148 enum { ICHD_MDMIN, ICHD_MDMOUT, ICHD_MDMLAST = ICHD_MDMOUT };
 149 enum { ALID_MDMIN, ALID_MDMOUT, ALID_MDMLAST = ALID_MDMOUT };
 150
 151 #define get_ichdev(substream) (substream->runtime->private_data)
 152
 153 struct ichdev {
 154         unsigned int ichd;                      /* ich device number */
 155         unsigned long reg_offset;               /* offset to bmaddr */
 156         __le32 *bdbar;                          /* CPU address (32bit) */
 157         unsigned int bdbar_addr;                /* PCI bus address (32bit) */
 158         struct snd_pcm_substream *substream;
 159         unsigned int physbuf;                   /* physical address (32bit) */
 160         unsigned int size;
 161         unsigned int fragsize;
 162         unsigned int fragsize1;
 163         unsigned int position;
 164         int frags;
 165         int lvi;
 166         int lvi_frag;
 167         int civ;
 168         int ack;
 169         int ack_reload;
 170         unsigned int ack_bit;
 171         unsigned int roff_sr;
 172         unsigned int roff_picb;
 173         unsigned int int_sta_mask;              /* interrupt status mask */
 174         unsigned int ali_slot;                  /* ALI DMA slot */
 175         struct snd_ac97 *ac97;
 176 };
 177
 178 struct intel8x0m {
 179         unsigned int device_type;
 180
 181         int irq;
 182
 183         void __iomem *addr;
 184         void __iomem *bmaddr;
 185
 186         struct pci_dev *pci;
 187         struct snd_card *card;
 188
 189         int pcm_devs;
 190         struct snd_pcm *pcm[2];
 191         struct ichdev ichd[2];
 192
 193         unsigned int in_ac97_init: 1;
 194
 195         struct snd_ac97_bus *ac97_bus;
 196         struct snd_ac97 *ac97;
 197
 198         spinlock_t reg_lock;
 199
 200         struct snd_dma_buffer bdbars;
 201         u32 bdbars_count;
 202         u32 int_sta_reg;                /* interrupt status register */
 203         u32 int_sta_mask;               /* interrupt status mask */
 204         unsigned int pcm_pos_shift;
 205 };
 206
 207 static const struct pci_device_id snd_intel8x0m_ids[] = {
 208         { PCI_VDEVICE(INTEL, 0x2416), DEVICE_INTEL },   /* 82801AA */
 209         { PCI_VDEVICE(INTEL, 0x2426), DEVICE_INTEL },   /* 82901AB */
 210         { PCI_VDEVICE(INTEL, 0x2446), DEVICE_INTEL },   /* 82801BA */
 211         { PCI_VDEVICE(INTEL, 0x2486), DEVICE_INTEL },   /* ICH3 */
 212         { PCI_VDEVICE(INTEL, 0x24c6), DEVICE_INTEL }, /* ICH4 */
 213         { PCI_VDEVICE(INTEL, 0x24d6), DEVICE_INTEL }, /* ICH5 */
 214         { PCI_VDEVICE(INTEL, 0x266d), DEVICE_INTEL },   /* ICH6 */
 215         { PCI_VDEVICE(INTEL, 0x27dd), DEVICE_INTEL },   /* ICH7 */
 216         { PCI_VDEVICE(INTEL, 0x7196), DEVICE_INTEL },   /* 440MX */
 217         { PCI_VDEVICE(AMD, 0x7446), DEVICE_INTEL },     /* AMD768 */
 218         { PCI_VDEVICE(SI, 0x7013), DEVICE_SIS },        /* SI7013 */
 219         { PCI_VDEVICE(NVIDIA, 0x01c1), DEVICE_NFORCE }, /* NFORCE */
 220         { PCI_VDEVICE(NVIDIA, 0x0069), DEVICE_NFORCE }, /* NFORCE2 */
 221         { PCI_VDEVICE(NVIDIA, 0x0089), DEVICE_NFORCE }, /* NFORCE2s */
 222         { PCI_VDEVICE(NVIDIA, 0x00d9), DEVICE_NFORCE }, /* NFORCE3 */
 223         { PCI_VDEVICE(AMD, 0x746e), DEVICE_INTEL },     /* AMD8111 */
 224 #if 0
 225         { PCI_VDEVICE(AL, 0x5455), DEVICE_ALI },   /* Ali5455 */
 226 #endif
 227         { 0, }
 228 };
 229
 230 MODULE_DEVICE_TABLE(pci, snd_intel8x0m_ids);
 231
 232 /*
 233  *  Lowlevel I/O - busmaster
 234  */
 235
 236 static inline u8 igetbyte(struct intel8x0m *chip, u32 offset)
 237 {
 238         return ioread8(chip->bmaddr + offset);
 239 }
 240
 241 static inline u16 igetword(struct intel8x0m *chip, u32 offset)
 242 {
 243         return ioread16(chip->bmaddr + offset);
 244 }
 245
 246 static inline u32 igetdword(struct intel8x0m *chip, u32 offset)
 247 {
 248         return ioread32(chip->bmaddr + offset);
 249 }
 250
 251 static inline void iputbyte(struct intel8x0m *chip, u32 offset, u8 val)
 252 {
 253         iowrite8(val, chip->bmaddr + offset);
 254 }
 255
 256 static inline void iputword(struct intel8x0m *chip, u32 offset, u16 val)
 257 {
 258         iowrite16(val, chip->bmaddr + offset);
 259 }
 260
 261 static inline void iputdword(struct intel8x0m *chip, u32 offset, u32 val)
 262 {
 263         iowrite32(val, chip->bmaddr + offset);
 264 }
 265
 266 /*
 267  *  Lowlevel I/O - AC'97 registers
 268  */
 269
 270 static inline u16 iagetword(struct intel8x0m *chip, u32 offset)
 271 {
 272         return ioread16(chip->addr + offset);
 273 }
 274
 275 static inline void iaputword(struct intel8x0m *chip, u32 offset, u16 val)
 276 {
 277         iowrite16(val, chip->addr + offset);
 278 }
 279
 280 /*
 281  *  Basic I/O
 282  */
 283
 284 /*
 285  * access to AC97 codec via normal i/o (for ICH and SIS7013)
 286  */
 287
 288 /* return the GLOB_STA bit for the corresponding codec */
 289 static unsigned int get_ich_codec_bit(struct intel8x0m *chip, unsigned int codec)
 290 {
 291         static unsigned int codec_bit[3] = {
 292                 ICH_PCR, ICH_SCR, ICH_TCR
 293         };
 294         if (snd_BUG_ON(codec >= 3))
 295                 return ICH_PCR;
 296         return codec_bit[codec];
 297 }
 298
 299 static int snd_intel8x0m_codec_semaphore(struct intel8x0m *chip, unsigned int codec)
 300 {
 301         int time;
 302
 303         if (codec > 1)
 304                 return -EIO;
 305         codec = get_ich_codec_bit(chip, codec);
 306
 307         /* codec ready ? */
 308         if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
 309                 return -EIO;
 310
 311         /* Anyone holding a semaphore for 1 msec should be shot... */
 312         time = 100;
 313         do {
 314                 if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
 315                         return 0;
 316                 udelay(10);
 317         } while (time--);
 318
 319         /* access to some forbidden (non existent) ac97 registers will not
 320          * reset the semaphore. So even if you don't get the semaphore, still
 321          * continue the access. We don't need the semaphore anyway. */
 322         dev_err(chip->card->dev,
 323                 "codec_semaphore: semaphore is not ready [0x%x][0x%x]\n",
 324                         igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
 325         iagetword(chip, 0);     /* clear semaphore flag */
 326         /* I don't care about the semaphore */
 327         return -EBUSY;
 328 }
 329
 330 static void snd_intel8x0m_codec_write(struct snd_ac97 *ac97,
 331                                       unsigned short reg,
 332                                       unsigned short val)
 333 {
 334         struct intel8x0m *chip = ac97->private_data;
 335
 336         if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
 337                 if (! chip->in_ac97_init)
 338                         dev_err(chip->card->dev,
 339                                 "codec_write %d: semaphore is not ready for register 0x%x\n",
 340                                 ac97->num, reg);
 341         }
 342         iaputword(chip, reg + ac97->num * 0x80, val);
 343 }
 344
 345 static unsigned short snd_intel8x0m_codec_read(struct snd_ac97 *ac97,
 346                                                unsigned short reg)
 347 {
 348         struct intel8x0m *chip = ac97->private_data;
 349         unsigned short res;
 350         unsigned int tmp;
 351
 352         if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
 353                 if (! chip->in_ac97_init)
 354                         dev_err(chip->card->dev,
 355                                 "codec_read %d: semaphore is not ready for register 0x%x\n",
 356                                 ac97->num, reg);
 357                 res = 0xffff;
 358         } else {
 359                 res = iagetword(chip, reg + ac97->num * 0x80);
 360                 if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
 361                         /* reset RCS and preserve other R/WC bits */
 362                         iputdword(chip, ICHREG(GLOB_STA),
 363                                   tmp & ~(ICH_SRI|ICH_PRI|ICH_TRI|ICH_GSCI));
 364                         if (! chip->in_ac97_init)
 365                                 dev_err(chip->card->dev,
 366                                         "codec_read %d: read timeout for register 0x%x\n",
 367                                         ac97->num, reg);
 368                         res = 0xffff;
 369                 }
 370         }
 371         if (reg == AC97_GPIO_STATUS)
 372                 iagetword(chip, 0); /* clear semaphore */
 373         return res;
 374 }
 375
 376
 377 /*
 378  * DMA I/O
 379  */
 380 static void snd_intel8x0m_setup_periods(struct intel8x0m *chip, struct ichdev *ichdev)
 381 {
 382         int idx;
 383         __le32 *bdbar = ichdev->bdbar;
 384         unsigned long port = ichdev->reg_offset;
 385
 386         iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
 387         if (ichdev->size == ichdev->fragsize) {
 388                 ichdev->ack_reload = ichdev->ack = 2;
 389                 ichdev->fragsize1 = ichdev->fragsize >> 1;
 390                 for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
 391                         bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
 392                         bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 393                                                      ichdev->fragsize1 >> chip->pcm_pos_shift);
 394                         bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
 395                         bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 396                                                      ichdev->fragsize1 >> chip->pcm_pos_shift);
 397                 }
 398                 ichdev->frags = 2;
 399         } else {
 400                 ichdev->ack_reload = ichdev->ack = 1;
 401                 ichdev->fragsize1 = ichdev->fragsize;
 402                 for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {
 403                         bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf + (((idx >> 1) * ichdev->fragsize) % ichdev->size));
 404                         bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 405                                                      ichdev->fragsize >> chip->pcm_pos_shift);
 406                         /*
 407                         dev_dbg(chip->card->dev, "bdbar[%i] = 0x%x [0x%x]\n",
 408                                idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
 409                         */
 410                 }
 411                 ichdev->frags = ichdev->size / ichdev->fragsize;
 412         }
 413         iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
 414         ichdev->civ = 0;
 415         iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
 416         ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
 417         ichdev->position = 0;
 418 #if 0
 419         dev_dbg(chip->card->dev,
 420                 "lvi_frag = %i, frags = %i, period_size = 0x%x, period_size1 = 0x%x\n",
 421                ichdev->lvi_frag, ichdev->frags, ichdev->fragsize,
 422                ichdev->fragsize1);
 423 #endif
 424         /* clear interrupts */
 425         iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
 426 }
 427
 428 /*
 429  *  Interrupt handler
 430  */
 431
 432 static inline void snd_intel8x0m_update(struct intel8x0m *chip, struct ichdev *ichdev)
 433 {
 434         unsigned long port = ichdev->reg_offset;
 435         int civ, i, step;
 436         int ack = 0;
 437
 438         civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
 439         if (civ == ichdev->civ) {
 440                 // snd_printd("civ same %d\n", civ);
 441                 step = 1;
 442                 ichdev->civ++;
 443                 ichdev->civ &= ICH_REG_LVI_MASK;
 444         } else {
 445                 step = civ - ichdev->civ;
 446                 if (step < 0)
 447                         step += ICH_REG_LVI_MASK + 1;
 448                 // if (step != 1)
 449                 //      snd_printd("step = %d, %d -> %d\n", step, ichdev->civ, civ);
 450                 ichdev->civ = civ;
 451         }
 452
 453         ichdev->position += step * ichdev->fragsize1;
 454         ichdev->position %= ichdev->size;
 455         ichdev->lvi += step;
 456         ichdev->lvi &= ICH_REG_LVI_MASK;
 457         iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
 458         for (i = 0; i < step; i++) {
 459                 ichdev->lvi_frag++;
 460                 ichdev->lvi_frag %= ichdev->frags;
 461                 ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf +
 462                                                              ichdev->lvi_frag *
 463                                                              ichdev->fragsize1);
 464 #if 0
 465                 dev_dbg(chip->card->dev,
 466                         "new: bdbar[%i] = 0x%x [0x%x], prefetch = %i, all = 0x%x, 0x%x\n",
 467                        ichdev->lvi * 2, ichdev->bdbar[ichdev->lvi * 2],
 468                        ichdev->bdbar[ichdev->lvi * 2 + 1], inb(ICH_REG_OFF_PIV + port),
 469                        inl(port + 4), inb(port + ICH_REG_OFF_CR));
 470 #endif
 471                 if (--ichdev->ack == 0) {
 472                         ichdev->ack = ichdev->ack_reload;
 473                         ack = 1;
 474                 }
 475         }
 476         if (ack && ichdev->substream) {
 477                 spin_unlock(&chip->reg_lock);
 478                 snd_pcm_period_elapsed(ichdev->substream);
 479                 spin_lock(&chip->reg_lock);
 480         }
 481         iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
 482 }
 483
 484 static irqreturn_t snd_intel8x0m_interrupt(int irq, void *dev_id)
 485 {
 486         struct intel8x0m *chip = dev_id;
 487         struct ichdev *ichdev;
 488         unsigned int status;
 489         unsigned int i;
 490
 491         spin_lock(&chip->reg_lock);
 492         status = igetdword(chip, chip->int_sta_reg);
 493         if (status == 0xffffffff) { /* we are not yet resumed */
 494                 spin_unlock(&chip->reg_lock);
 495                 return IRQ_NONE;
 496         }
 497         if ((status & chip->int_sta_mask) == 0) {
 498                 if (status)
 499                         iputdword(chip, chip->int_sta_reg, status);
 500                 spin_unlock(&chip->reg_lock);
 501                 return IRQ_NONE;
 502         }
 503
 504         for (i = 0; i < chip->bdbars_count; i++) {
 505                 ichdev = &chip->ichd[i];
 506                 if (status & ichdev->int_sta_mask)
 507                         snd_intel8x0m_update(chip, ichdev);
 508         }
 509
 510         /* ack them */
 511         iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
 512         spin_unlock(&chip->reg_lock);
 513
 514         return IRQ_HANDLED;
 515 }
 516
 517 /*
 518  *  PCM part
 519  */
 520
 521 static int snd_intel8x0m_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 522 {
 523         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 524         struct ichdev *ichdev = get_ichdev(substream);
 525         unsigned char val = 0;
 526         unsigned long port = ichdev->reg_offset;
 527
 528         switch (cmd) {
 529         case SNDRV_PCM_TRIGGER_START:
 530         case SNDRV_PCM_TRIGGER_RESUME:
 531                 val = ICH_IOCE | ICH_STARTBM;
 532                 break;
 533         case SNDRV_PCM_TRIGGER_STOP:
 534         case SNDRV_PCM_TRIGGER_SUSPEND:
 535                 val = 0;
 536                 break;
 537         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 538                 val = ICH_IOCE;
 539                 break;
 540         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 541                 val = ICH_IOCE | ICH_STARTBM;
 542                 break;
 543         default:
 544                 return -EINVAL;
 545         }
 546         iputbyte(chip, port + ICH_REG_OFF_CR, val);
 547         if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 548                 /* wait until DMA stopped */
 549                 while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
 550                 /* reset whole DMA things */
 551                 iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
 552         }
 553         return 0;
 554 }
 555
 556 static int snd_intel8x0m_hw_params(struct snd_pcm_substream *substream,
 557                                   struct snd_pcm_hw_params *hw_params)
 558 {
 559         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 560 }
 561
 562 static int snd_intel8x0m_hw_free(struct snd_pcm_substream *substream)
 563 {
 564         return snd_pcm_lib_free_pages(substream);
 565 }
 566
 567 static snd_pcm_uframes_t snd_intel8x0m_pcm_pointer(struct snd_pcm_substream *substream)
 568 {
 569         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 570         struct ichdev *ichdev = get_ichdev(substream);
 571         size_t ptr1, ptr;
 572
 573         ptr1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb) << chip->pcm_pos_shift;
 574         if (ptr1 != 0)
 575                 ptr = ichdev->fragsize1 - ptr1;
 576         else
 577                 ptr = 0;
 578         ptr += ichdev->position;
 579         if (ptr >= ichdev->size)
 580                 return 0;
 581         return bytes_to_frames(substream->runtime, ptr);
 582 }
 583
 584 static int snd_intel8x0m_pcm_prepare(struct snd_pcm_substream *substream)
 585 {
 586         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 587         struct snd_pcm_runtime *runtime = substream->runtime;
 588         struct ichdev *ichdev = get_ichdev(substream);
 589
 590         ichdev->physbuf = runtime->dma_addr;
 591         ichdev->size = snd_pcm_lib_buffer_bytes(substream);
 592         ichdev->fragsize = snd_pcm_lib_period_bytes(substream);
 593         snd_ac97_write(ichdev->ac97, AC97_LINE1_RATE, runtime->rate);
 594         snd_ac97_write(ichdev->ac97, AC97_LINE1_LEVEL, 0);
 595         snd_intel8x0m_setup_periods(chip, ichdev);
 596         return 0;
 597 }
 598
 599 static const struct snd_pcm_hardware snd_intel8x0m_stream =
 600 {
 601         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 602                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 603                                  SNDRV_PCM_INFO_MMAP_VALID |
 604                                  SNDRV_PCM_INFO_PAUSE |
 605                                  SNDRV_PCM_INFO_RESUME),
 606         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
 607         .rates =                SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
 608         .rate_min =             8000,
 609         .rate_max =             16000,
 610         .channels_min =         1,
 611         .channels_max =         1,
 612         .buffer_bytes_max =     64 * 1024,
 613         .period_bytes_min =     32,
 614         .period_bytes_max =     64 * 1024,
 615         .periods_min =          1,
 616         .periods_max =          1024,
 617         .fifo_size =            0,
 618 };
 619
 620
 621 static int snd_intel8x0m_pcm_open(struct snd_pcm_substream *substream, struct ichdev *ichdev)
 622 {
 623         static const unsigned int rates[] = { 8000,  9600, 12000, 16000 };
 624         static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
 625                 .count = ARRAY_SIZE(rates),
 626                 .list = rates,
 627                 .mask = 0,
 628         };
 629         struct snd_pcm_runtime *runtime = substream->runtime;
 630         int err;
 631
 632         ichdev->substream = substream;
 633         runtime->hw = snd_intel8x0m_stream;
 634         err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 635                                          &hw_constraints_rates);
 636         if ( err < 0 )
 637                 return err;
 638         runtime->private_data = ichdev;
 639         return 0;
 640 }
 641
 642 static int snd_intel8x0m_playback_open(struct snd_pcm_substream *substream)
 643 {
 644         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 645
 646         return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMOUT]);
 647 }
 648
 649 static int snd_intel8x0m_playback_close(struct snd_pcm_substream *substream)
 650 {
 651         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 652
 653         chip->ichd[ICHD_MDMOUT].substream = NULL;
 654         return 0;
 655 }
 656
 657 static int snd_intel8x0m_capture_open(struct snd_pcm_substream *substream)
 658 {
 659         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 660
 661         return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMIN]);
 662 }
 663
 664 static int snd_intel8x0m_capture_close(struct snd_pcm_substream *substream)
 665 {
 666         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 667
 668         chip->ichd[ICHD_MDMIN].substream = NULL;
 669         return 0;
 670 }
 671
 672
 673 static const struct snd_pcm_ops snd_intel8x0m_playback_ops = {
 674         .open =         snd_intel8x0m_playback_open,
 675         .close =        snd_intel8x0m_playback_close,
 676         .ioctl =        snd_pcm_lib_ioctl,
 677         .hw_params =    snd_intel8x0m_hw_params,
 678         .hw_free =      snd_intel8x0m_hw_free,
 679         .prepare =      snd_intel8x0m_pcm_prepare,
 680         .trigger =      snd_intel8x0m_pcm_trigger,
 681         .pointer =      snd_intel8x0m_pcm_pointer,
 682 };
 683
 684 static const struct snd_pcm_ops snd_intel8x0m_capture_ops = {
 685         .open =         snd_intel8x0m_capture_open,
 686         .close =        snd_intel8x0m_capture_close,
 687         .ioctl =        snd_pcm_lib_ioctl,
 688         .hw_params =    snd_intel8x0m_hw_params,
 689         .hw_free =      snd_intel8x0m_hw_free,
 690         .prepare =      snd_intel8x0m_pcm_prepare,
 691         .trigger =      snd_intel8x0m_pcm_trigger,
 692         .pointer =      snd_intel8x0m_pcm_pointer,
 693 };
 694
 695
 696 struct ich_pcm_table {
 697         char *suffix;
 698         const struct snd_pcm_ops *playback_ops;
 699         const struct snd_pcm_ops *capture_ops;
 700         size_t prealloc_size;
 701         size_t prealloc_max_size;
 702         int ac97_idx;
 703 };
 704
 705 static int snd_intel8x0m_pcm1(struct intel8x0m *chip, int device,
 706                               struct ich_pcm_table *rec)
 707 {
 708         struct snd_pcm *pcm;
 709         int err;
 710         char name[32];
 711
 712         if (rec->suffix)
 713                 sprintf(name, "Intel ICH - %s", rec->suffix);
 714         else
 715                 strcpy(name, "Intel ICH");
 716         err = snd_pcm_new(chip->card, name, device,
 717                           rec->playback_ops ? 1 : 0,
 718                           rec->capture_ops ? 1 : 0, &pcm);
 719         if (err < 0)
 720                 return err;
 721
 722         if (rec->playback_ops)
 723                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, rec->playback_ops);
 724         if (rec->capture_ops)
 725                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, rec->capture_ops);
 726
 727         pcm->private_data = chip;
 728         pcm->info_flags = 0;
 729         pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
 730         if (rec->suffix)
 731                 sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
 732         else
 733                 strcpy(pcm->name, chip->card->shortname);
 734         chip->pcm[device] = pcm;
 735
 736         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 737                                               snd_dma_pci_data(chip->pci),
 738                                               rec->prealloc_size,
 739                                               rec->prealloc_max_size);
 740
 741         return 0;
 742 }
 743
 744 static struct ich_pcm_table intel_pcms[] = {
 745         {
 746                 .suffix = "Modem",
 747                 .playback_ops = &snd_intel8x0m_playback_ops,
 748                 .capture_ops = &snd_intel8x0m_capture_ops,
 749                 .prealloc_size = 32 * 1024,
 750                 .prealloc_max_size = 64 * 1024,
 751         },
 752 };
 753
 754 static int snd_intel8x0m_pcm(struct intel8x0m *chip)
 755 {
 756         int i, tblsize, device, err;
 757         struct ich_pcm_table *tbl, *rec;
 758
 759 #if 1
 760         tbl = intel_pcms;
 761         tblsize = 1;
 762 #else
 763         switch (chip->device_type) {
 764         case DEVICE_NFORCE:
 765                 tbl = nforce_pcms;
 766                 tblsize = ARRAY_SIZE(nforce_pcms);
 767                 break;
 768         case DEVICE_ALI:
 769                 tbl = ali_pcms;
 770                 tblsize = ARRAY_SIZE(ali_pcms);
 771                 break;
 772         default:
 773                 tbl = intel_pcms;
 774                 tblsize = 2;
 775                 break;
 776         }
 777 #endif
 778         device = 0;
 779         for (i = 0; i < tblsize; i++) {
 780                 rec = tbl + i;
 781                 if (i > 0 && rec->ac97_idx) {
 782                         /* activate PCM only when associated AC'97 codec */
 783                         if (! chip->ichd[rec->ac97_idx].ac97)
 784                                 continue;
 785                 }
 786                 err = snd_intel8x0m_pcm1(chip, device, rec);
 787                 if (err < 0)
 788                         return err;
 789                 device++;
 790         }
 791
 792         chip->pcm_devs = device;
 793         return 0;
 794 }
 795
 796
 797 /*
 798  *  Mixer part
 799  */
 800
 801 static void snd_intel8x0m_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
 802 {
 803         struct intel8x0m *chip = bus->private_data;
 804         chip->ac97_bus = NULL;
 805 }
 806
 807 static void snd_intel8x0m_mixer_free_ac97(struct snd_ac97 *ac97)
 808 {
 809         struct intel8x0m *chip = ac97->private_data;
 810         chip->ac97 = NULL;
 811 }
 812
 813
 814 static int snd_intel8x0m_mixer(struct intel8x0m *chip, int ac97_clock)
 815 {
 816         struct snd_ac97_bus *pbus;
 817         struct snd_ac97_template ac97;
 818         struct snd_ac97 *x97;
 819         int err;
 820         unsigned int glob_sta = 0;
 821         static struct snd_ac97_bus_ops ops = {
 822                 .write = snd_intel8x0m_codec_write,
 823                 .read = snd_intel8x0m_codec_read,
 824         };
 825
 826         chip->in_ac97_init = 1;
 827
 828         memset(&ac97, 0, sizeof(ac97));
 829         ac97.private_data = chip;
 830         ac97.private_free = snd_intel8x0m_mixer_free_ac97;
 831         ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
 832
 833         glob_sta = igetdword(chip, ICHREG(GLOB_STA));
 834
 835         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
 836                 goto __err;
 837         pbus->private_free = snd_intel8x0m_mixer_free_ac97_bus;
 838         if (ac97_clock >= 8000 && ac97_clock <= 48000)
 839                 pbus->clock = ac97_clock;
 840         chip->ac97_bus = pbus;
 841
 842         ac97.pci = chip->pci;
 843         ac97.num = glob_sta & ICH_SCR ? 1 : 0;
 844         if ((err = snd_ac97_mixer(pbus, &ac97, &x97)) < 0) {
 845                 dev_err(chip->card->dev,
 846                         "Unable to initialize codec #%d\n", ac97.num);
 847                 if (ac97.num == 0)
 848                         goto __err;
 849                 return err;
 850         }
 851         chip->ac97 = x97;
 852         if(ac97_is_modem(x97) && !chip->ichd[ICHD_MDMIN].ac97) {
 853                 chip->ichd[ICHD_MDMIN].ac97 = x97;
 854                 chip->ichd[ICHD_MDMOUT].ac97 = x97;
 855         }
 856
 857         chip->in_ac97_init = 0;
 858         return 0;
 859
 860  __err:
 861         /* clear the cold-reset bit for the next chance */
 862         if (chip->device_type != DEVICE_ALI)
 863                 iputdword(chip, ICHREG(GLOB_CNT),
 864                           igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_AC97COLD);
 865         return err;
 866 }
 867
 868
 869 /*
 870  *
 871  */
 872
 873 static int snd_intel8x0m_ich_chip_init(struct intel8x0m *chip, int probing)
 874 {
 875         unsigned long end_time;
 876         unsigned int cnt, status, nstatus;
 877
 878         /* put logic to right state */
 879         /* first clear status bits */
 880         status = ICH_RCS | ICH_MIINT | ICH_MOINT;
 881         cnt = igetdword(chip, ICHREG(GLOB_STA));
 882         iputdword(chip, ICHREG(GLOB_STA), cnt & status);
 883
 884         /* ACLink on, 2 channels */
 885         cnt = igetdword(chip, ICHREG(GLOB_CNT));
 886         cnt &= ~(ICH_ACLINK);
 887         /* finish cold or do warm reset */
 888         cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM;
 889         iputdword(chip, ICHREG(GLOB_CNT), cnt);
 890         usleep_range(500, 1000); /* give warm reset some time */
 891         end_time = jiffies + HZ / 4;
 892         do {
 893                 if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)
 894                         goto __ok;
 895                 schedule_timeout_uninterruptible(1);
 896         } while (time_after_eq(end_time, jiffies));
 897         dev_err(chip->card->dev, "AC'97 warm reset still in progress? [0x%x]\n",
 898                    igetdword(chip, ICHREG(GLOB_CNT)));
 899         return -EIO;
 900
 901       __ok:
 902         if (probing) {
 903                 /* wait for any codec ready status.
 904                  * Once it becomes ready it should remain ready
 905                  * as long as we do not disable the ac97 link.
 906                  */
 907                 end_time = jiffies + HZ;
 908                 do {
 909                         status = igetdword(chip, ICHREG(GLOB_STA)) &
 910                                 (ICH_PCR | ICH_SCR | ICH_TCR);
 911                         if (status)
 912                                 break;
 913                         schedule_timeout_uninterruptible(1);
 914                 } while (time_after_eq(end_time, jiffies));
 915                 if (! status) {
 916                         /* no codec is found */
 917                         dev_err(chip->card->dev,
 918                                 "codec_ready: codec is not ready [0x%x]\n",
 919                                    igetdword(chip, ICHREG(GLOB_STA)));
 920                         return -EIO;
 921                 }
 922
 923                 /* up to two codecs (modem cannot be tertiary with ICH4) */
 924                 nstatus = ICH_PCR | ICH_SCR;
 925
 926                 /* wait for other codecs ready status. */
 927                 end_time = jiffies + HZ / 4;
 928                 while (status != nstatus && time_after_eq(end_time, jiffies)) {
 929                         schedule_timeout_uninterruptible(1);
 930                         status |= igetdword(chip, ICHREG(GLOB_STA)) & nstatus;
 931                 }
 932
 933         } else {
 934                 /* resume phase */
 935                 status = 0;
 936                 if (chip->ac97)
 937                         status |= get_ich_codec_bit(chip, chip->ac97->num);
 938                 /* wait until all the probed codecs are ready */
 939                 end_time = jiffies + HZ;
 940                 do {
 941                         nstatus = igetdword(chip, ICHREG(GLOB_STA)) &
 942                                 (ICH_PCR | ICH_SCR | ICH_TCR);
 943                         if (status == nstatus)
 944                                 break;
 945                         schedule_timeout_uninterruptible(1);
 946                 } while (time_after_eq(end_time, jiffies));
 947         }
 948
 949         if (chip->device_type == DEVICE_SIS) {
 950                 /* unmute the output on SIS7012 */
 951                 iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
 952         }
 953
 954         return 0;
 955 }
 956
 957 static int snd_intel8x0m_chip_init(struct intel8x0m *chip, int probing)
 958 {
 959         unsigned int i;
 960         int err;
 961
 962         if ((err = snd_intel8x0m_ich_chip_init(chip, probing)) < 0)
 963                 return err;
 964         iagetword(chip, 0);     /* clear semaphore flag */
 965
 966         /* disable interrupts */
 967         for (i = 0; i < chip->bdbars_count; i++)
 968                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
 969         /* reset channels */
 970         for (i = 0; i < chip->bdbars_count; i++)
 971                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
 972         /* initialize Buffer Descriptor Lists */
 973         for (i = 0; i < chip->bdbars_count; i++)
 974                 iputdword(chip, ICH_REG_OFF_BDBAR + chip->ichd[i].reg_offset, chip->ichd[i].bdbar_addr);
 975         return 0;
 976 }
 977
 978 static int snd_intel8x0m_free(struct intel8x0m *chip)
 979 {
 980         unsigned int i;
 981
 982         if (chip->irq < 0)
 983                 goto __hw_end;
 984         /* disable interrupts */
 985         for (i = 0; i < chip->bdbars_count; i++)
 986                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
 987         /* reset channels */
 988         for (i = 0; i < chip->bdbars_count; i++)
 989                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
 990  __hw_end:
 991         if (chip->irq >= 0)
 992                 free_irq(chip->irq, chip);
 993         if (chip->bdbars.area)
 994                 snd_dma_free_pages(&chip->bdbars);
 995         if (chip->addr)
 996                 pci_iounmap(chip->pci, chip->addr);
 997         if (chip->bmaddr)
 998                 pci_iounmap(chip->pci, chip->bmaddr);
 999         pci_release_regions(chip->pci);
1000         pci_disable_device(chip->pci);
1001         kfree(chip);
1002         return 0;
1003 }
1004
1005 #ifdef CONFIG_PM_SLEEP
1006 /*
1007  * power management
1008  */
1009 static int intel8x0m_suspend(struct device *dev)
1010 {
1011         struct snd_card *card = dev_get_drvdata(dev);
1012         struct intel8x0m *chip = card->private_data;
1013
1014         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1015         snd_ac97_suspend(chip->ac97);
1016         if (chip->irq >= 0) {
1017                 free_irq(chip->irq, chip);
1018                 chip->irq = -1;
1019         }
1020         return 0;
1021 }
1022
1023 static int intel8x0m_resume(struct device *dev)
1024 {
1025         struct pci_dev *pci = to_pci_dev(dev);
1026         struct snd_card *card = dev_get_drvdata(dev);
1027         struct intel8x0m *chip = card->private_data;
1028
1029         if (request_irq(pci->irq, snd_intel8x0m_interrupt,
1030                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
1031                 dev_err(dev, "unable to grab IRQ %d, disabling device\n",
1032                         pci->irq);
1033                 snd_card_disconnect(card);
1034                 return -EIO;
1035         }
1036         chip->irq = pci->irq;
1037         snd_intel8x0m_chip_init(chip, 0);
1038         snd_ac97_resume(chip->ac97);
1039
1040         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1041         return 0;
1042 }
1043
1044 static SIMPLE_DEV_PM_OPS(intel8x0m_pm, intel8x0m_suspend, intel8x0m_resume);
1045 #define INTEL8X0M_PM_OPS        &intel8x0m_pm
1046 #else
1047 #define INTEL8X0M_PM_OPS        NULL
1048 #endif /* CONFIG_PM_SLEEP */
1049
1050 static void snd_intel8x0m_proc_read(struct snd_info_entry * entry,
1051                                    struct snd_info_buffer *buffer)
1052 {
1053         struct intel8x0m *chip = entry->private_data;
1054         unsigned int tmp;
1055
1056         snd_iprintf(buffer, "Intel8x0m\n\n");
1057         if (chip->device_type == DEVICE_ALI)
1058                 return;
1059         tmp = igetdword(chip, ICHREG(GLOB_STA));
1060         snd_iprintf(buffer, "Global control        : 0x%08x\n",
1061                     igetdword(chip, ICHREG(GLOB_CNT)));
1062         snd_iprintf(buffer, "Global status         : 0x%08x\n", tmp);
1063         snd_iprintf(buffer, "AC'97 codecs ready    :%s%s%s%s\n",
1064                         tmp & ICH_PCR ? " primary" : "",
1065                         tmp & ICH_SCR ? " secondary" : "",
1066                         tmp & ICH_TCR ? " tertiary" : "",
1067                         (tmp & (ICH_PCR | ICH_SCR | ICH_TCR)) == 0 ? " none" : "");
1068 }
1069
1070 static void snd_intel8x0m_proc_init(struct intel8x0m *chip)
1071 {
1072         snd_card_ro_proc_new(chip->card, "intel8x0m", chip,
1073                              snd_intel8x0m_proc_read);
1074 }
1075
1076 static int snd_intel8x0m_dev_free(struct snd_device *device)
1077 {
1078         struct intel8x0m *chip = device->device_data;
1079         return snd_intel8x0m_free(chip);
1080 }
1081
1082 struct ich_reg_info {
1083         unsigned int int_sta_mask;
1084         unsigned int offset;
1085 };
1086
1087 static int snd_intel8x0m_create(struct snd_card *card,
1088                                 struct pci_dev *pci,
1089                                 unsigned long device_type,
1090                                 struct intel8x0m **r_intel8x0m)
1091 {
1092         struct intel8x0m *chip;
1093         int err;
1094         unsigned int i;
1095         unsigned int int_sta_masks;
1096         struct ichdev *ichdev;
1097         static struct snd_device_ops ops = {
1098                 .dev_free =     snd_intel8x0m_dev_free,
1099         };
1100         static struct ich_reg_info intel_regs[2] = {
1101                 { ICH_MIINT, 0 },
1102                 { ICH_MOINT, 0x10 },
1103         };
1104         struct ich_reg_info *tbl;
1105
1106         *r_intel8x0m = NULL;
1107
1108         if ((err = pci_enable_device(pci)) < 0)
1109                 return err;
1110
1111         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1112         if (chip == NULL) {
1113                 pci_disable_device(pci);
1114                 return -ENOMEM;
1115         }
1116         spin_lock_init(&chip->reg_lock);
1117         chip->device_type = device_type;
1118         chip->card = card;
1119         chip->pci = pci;
1120         chip->irq = -1;
1121
1122         if ((err = pci_request_regions(pci, card->shortname)) < 0) {
1123                 kfree(chip);
1124                 pci_disable_device(pci);
1125                 return err;
1126         }
1127
1128         if (device_type == DEVICE_ALI) {
1129                 /* ALI5455 has no ac97 region */
1130                 chip->bmaddr = pci_iomap(pci, 0, 0);
1131                 goto port_inited;
1132         }
1133
1134         if (pci_resource_flags(pci, 2) & IORESOURCE_MEM) /* ICH4 and Nforce */
1135                 chip->addr = pci_iomap(pci, 2, 0);
1136         else
1137                 chip->addr = pci_iomap(pci, 0, 0);
1138         if (!chip->addr) {
1139                 dev_err(card->dev, "AC'97 space ioremap problem\n");
1140                 snd_intel8x0m_free(chip);
1141                 return -EIO;
1142         }
1143         if (pci_resource_flags(pci, 3) & IORESOURCE_MEM) /* ICH4 */
1144                 chip->bmaddr = pci_iomap(pci, 3, 0);
1145         else
1146                 chip->bmaddr = pci_iomap(pci, 1, 0);
1147         if (!chip->bmaddr) {
1148                 dev_err(card->dev, "Controller space ioremap problem\n");
1149                 snd_intel8x0m_free(chip);
1150                 return -EIO;
1151         }
1152
1153  port_inited:
1154         /* initialize offsets */
1155         chip->bdbars_count = 2;
1156         tbl = intel_regs;
1157
1158         for (i = 0; i < chip->bdbars_count; i++) {
1159                 ichdev = &chip->ichd[i];
1160                 ichdev->ichd = i;
1161                 ichdev->reg_offset = tbl[i].offset;
1162                 ichdev->int_sta_mask = tbl[i].int_sta_mask;
1163                 if (device_type == DEVICE_SIS) {
1164                         /* SiS 7013 swaps the registers */
1165                         ichdev->roff_sr = ICH_REG_OFF_PICB;
1166                         ichdev->roff_picb = ICH_REG_OFF_SR;
1167                 } else {
1168                         ichdev->roff_sr = ICH_REG_OFF_SR;
1169                         ichdev->roff_picb = ICH_REG_OFF_PICB;
1170                 }
1171                 if (device_type == DEVICE_ALI)
1172                         ichdev->ali_slot = (ichdev->reg_offset - 0x40) / 0x10;
1173         }
1174         /* SIS7013 handles the pcm data in bytes, others are in words */
1175         chip->pcm_pos_shift = (device_type == DEVICE_SIS) ? 0 : 1;
1176
1177         /* allocate buffer descriptor lists */
1178         /* the start of each lists must be aligned to 8 bytes */
1179         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1180                                 chip->bdbars_count * sizeof(u32) * ICH_MAX_FRAGS * 2,
1181                                 &chip->bdbars) < 0) {
1182                 snd_intel8x0m_free(chip);
1183                 return -ENOMEM;
1184         }
1185         /* tables must be aligned to 8 bytes here, but the kernel pages
1186            are much bigger, so we don't care (on i386) */
1187         int_sta_masks = 0;
1188         for (i = 0; i < chip->bdbars_count; i++) {
1189                 ichdev = &chip->ichd[i];
1190                 ichdev->bdbar = ((__le32 *)chip->bdbars.area) + (i * ICH_MAX_FRAGS * 2);
1191                 ichdev->bdbar_addr = chip->bdbars.addr + (i * sizeof(u32) * ICH_MAX_FRAGS * 2);
1192                 int_sta_masks |= ichdev->int_sta_mask;
1193         }
1194         chip->int_sta_reg = ICH_REG_GLOB_STA;
1195         chip->int_sta_mask = int_sta_masks;
1196
1197         pci_set_master(pci);
1198
1199         if ((err = snd_intel8x0m_chip_init(chip, 1)) < 0) {
1200                 snd_intel8x0m_free(chip);
1201                 return err;
1202         }
1203
1204         if (request_irq(pci->irq, snd_intel8x0m_interrupt, IRQF_SHARED,
1205                         KBUILD_MODNAME, chip)) {
1206                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1207                 snd_intel8x0m_free(chip);
1208                 return -EBUSY;
1209         }
1210         chip->irq = pci->irq;
1211
1212         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1213                 snd_intel8x0m_free(chip);
1214                 return err;
1215         }
1216
1217         *r_intel8x0m = chip;
1218         return 0;
1219 }
1220
1221 static struct shortname_table {
1222         unsigned int id;
1223         const char *s;
1224 } shortnames[] = {
1225         { PCI_DEVICE_ID_INTEL_82801AA_6, "Intel 82801AA-ICH" },
1226         { PCI_DEVICE_ID_INTEL_82801AB_6, "Intel 82901AB-ICH0" },
1227         { PCI_DEVICE_ID_INTEL_82801BA_6, "Intel 82801BA-ICH2" },
1228         { PCI_DEVICE_ID_INTEL_440MX_6, "Intel 440MX" },
1229         { PCI_DEVICE_ID_INTEL_82801CA_6, "Intel 82801CA-ICH3" },
1230         { PCI_DEVICE_ID_INTEL_82801DB_6, "Intel 82801DB-ICH4" },
1231         { PCI_DEVICE_ID_INTEL_82801EB_6, "Intel ICH5" },
1232         { PCI_DEVICE_ID_INTEL_ICH6_17, "Intel ICH6" },
1233         { PCI_DEVICE_ID_INTEL_ICH7_19, "Intel ICH7" },
1234         { 0x7446, "AMD AMD768" },
1235         { PCI_DEVICE_ID_SI_7013, "SiS SI7013" },
1236         { PCI_DEVICE_ID_NVIDIA_MCP1_MODEM, "NVidia nForce" },
1237         { PCI_DEVICE_ID_NVIDIA_MCP2_MODEM, "NVidia nForce2" },
1238         { PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM, "NVidia nForce2s" },
1239         { PCI_DEVICE_ID_NVIDIA_MCP3_MODEM, "NVidia nForce3" },
1240         { 0x746e, "AMD AMD8111" },
1241 #if 0
1242         { 0x5455, "ALi M5455" },
1243 #endif
1244         { 0 },
1245 };
1246
1247 static int snd_intel8x0m_probe(struct pci_dev *pci,
1248                                const struct pci_device_id *pci_id)
1249 {
1250         struct snd_card *card;
1251         struct intel8x0m *chip;
1252         int err;
1253         struct shortname_table *name;
1254
1255         err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
1256         if (err < 0)
1257                 return err;
1258
1259         strcpy(card->driver, "ICH-MODEM");
1260         strcpy(card->shortname, "Intel ICH");
1261         for (name = shortnames; name->id; name++) {
1262                 if (pci->device == name->id) {
1263                         strcpy(card->shortname, name->s);
1264                         break;
1265                 }
1266         }
1267         strcat(card->shortname," Modem");
1268
1269         if ((err = snd_intel8x0m_create(card, pci, pci_id->driver_data, &chip)) < 0) {
1270                 snd_card_free(card);
1271                 return err;
1272         }
1273         card->private_data = chip;
1274
1275         if ((err = snd_intel8x0m_mixer(chip, ac97_clock)) < 0) {
1276                 snd_card_free(card);
1277                 return err;
1278         }
1279         if ((err = snd_intel8x0m_pcm(chip)) < 0) {
1280                 snd_card_free(card);
1281                 return err;
1282         }
1283
1284         snd_intel8x0m_proc_init(chip);
1285
1286         sprintf(card->longname, "%s at irq %i",
1287                 card->shortname, chip->irq);
1288
1289         if ((err = snd_card_register(card)) < 0) {
1290                 snd_card_free(card);
1291                 return err;
1292         }
1293         pci_set_drvdata(pci, card);
1294         return 0;
1295 }
1296
1297 static void snd_intel8x0m_remove(struct pci_dev *pci)
1298 {
1299         snd_card_free(pci_get_drvdata(pci));
1300 }
1301
1302 static struct pci_driver intel8x0m_driver = {
1303         .name = KBUILD_MODNAME,
1304         .id_table = snd_intel8x0m_ids,
1305         .probe = snd_intel8x0m_probe,
1306         .remove = snd_intel8x0m_remove,
1307         .driver = {
1308                 .pm = INTEL8X0M_PM_OPS,
1309         },
1310 };
1311
1312 module_pci_driver(intel8x0m_driver);