git.oblomov.eu Git - linux-2.6/blob - sound/pci/intel8x0m.c

   1 /*
   2  *   ALSA modem driver for Intel ICH (i8x0) chipsets
   3  *
   4  *      Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
   5  *
   6  *   This is modified (by Sasha Khapyorsky <sashak@smlink.com>) 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 <sound/driver.h>
  27 #include <asm/io.h>
  28 #include <linux/delay.h>
  29 #include <linux/interrupt.h>
  30 #include <linux/init.h>
  31 #include <linux/pci.h>
  32 #include <linux/slab.h>
  33 #include <linux/moduleparam.h>
  34 #include <sound/core.h>
  35 #include <sound/pcm.h>
  36 #include <sound/ac97_codec.h>
  37 #include <sound/info.h>
  38 #include <sound/initval.h>
  39
  40 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
  41 MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; 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[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
  60 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  61 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
  62 static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0};
  63
  64 module_param_array(index, int, NULL, 0444);
  65 MODULE_PARM_DESC(index, "Index value for Intel i8x0 modemcard.");
  66 module_param_array(id, charp, NULL, 0444);
  67 MODULE_PARM_DESC(id, "ID string for Intel i8x0 modemcard.");
  68 module_param_array(enable, bool, NULL, 0444);
  69 MODULE_PARM_DESC(enable, "Enable Intel i8x0 modemcard.");
  70 module_param_array(ac97_clock, int, NULL, 0444);
  71 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = auto-detect).");
  72
  73 /*
  74  *  Direct registers
  75  */
  76
  77 #ifndef PCI_DEVICE_ID_INTEL_82801_6
  78 #define PCI_DEVICE_ID_INTEL_82801_6     0x2416
  79 #endif
  80 #ifndef PCI_DEVICE_ID_INTEL_82901_6
  81 #define PCI_DEVICE_ID_INTEL_82901_6     0x2426
  82 #endif
  83 #ifndef PCI_DEVICE_ID_INTEL_82801BA_6
  84 #define PCI_DEVICE_ID_INTEL_82801BA_6   0x2446
  85 #endif
  86 #ifndef PCI_DEVICE_ID_INTEL_440MX_6
  87 #define PCI_DEVICE_ID_INTEL_440MX_6     0x7196
  88 #endif
  89 #ifndef PCI_DEVICE_ID_INTEL_ICH3_6
  90 #define PCI_DEVICE_ID_INTEL_ICH3_6      0x2486
  91 #endif
  92 #ifndef PCI_DEVICE_ID_INTEL_ICH4_6
  93 #define PCI_DEVICE_ID_INTEL_ICH4_6      0x24c6
  94 #endif
  95 #ifndef PCI_DEVICE_ID_INTEL_ICH5_6
  96 #define PCI_DEVICE_ID_INTEL_ICH5_6      0x24d6
  97 #endif
  98 #ifndef PCI_DEVICE_ID_INTEL_ICH6_6
  99 #define PCI_DEVICE_ID_INTEL_ICH6_6      0x266d
 100 #endif
 101 #ifndef PCI_DEVICE_ID_INTEL_ICH7_6
 102 #define PCI_DEVICE_ID_INTEL_ICH7_6      0x27dd
 103 #endif
 104 #ifndef PCI_DEVICE_ID_SI_7013
 105 #define PCI_DEVICE_ID_SI_7013           0x7013
 106 #endif
 107 #ifndef PCI_DEVICE_ID_NVIDIA_MCP_MODEM
 108 #define PCI_DEVICE_ID_NVIDIA_MCP_MODEM  0x01c1
 109 #endif
 110 #ifndef PCI_DEVICE_ID_NVIDIA_MCP2_MODEM
 111 #define PCI_DEVICE_ID_NVIDIA_MCP2_MODEM 0x0069
 112 #endif
 113 #ifndef PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM
 114 #define PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM 0x0089
 115 #endif
 116 #ifndef PCI_DEVICE_ID_NVIDIA_MCP3_MODEM
 117 #define PCI_DEVICE_ID_NVIDIA_MCP3_MODEM 0x00d9
 118 #endif
 119
 120
 121 enum { DEVICE_INTEL, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
 122
 123 #define ICHREG(x) ICH_REG_##x
 124
 125 #define DEFINE_REGSET(name,base) \
 126 enum { \
 127         ICH_REG_##name##_BDBAR  = base + 0x0,   /* dword - buffer descriptor list base address */ \
 128         ICH_REG_##name##_CIV    = base + 0x04,  /* byte - current index value */ \
 129         ICH_REG_##name##_LVI    = base + 0x05,  /* byte - last valid index */ \
 130         ICH_REG_##name##_SR     = base + 0x06,  /* byte - status register */ \
 131         ICH_REG_##name##_PICB   = base + 0x08,  /* word - position in current buffer */ \
 132         ICH_REG_##name##_PIV    = base + 0x0a,  /* byte - prefetched index value */ \
 133         ICH_REG_##name##_CR     = base + 0x0b,  /* byte - control register */ \
 134 };
 135
 136 /* busmaster blocks */
 137 DEFINE_REGSET(OFF, 0);          /* offset */
 138
 139 /* values for each busmaster block */
 140
 141 /* LVI */
 142 #define ICH_REG_LVI_MASK                0x1f
 143
 144 /* SR */
 145 #define ICH_FIFOE                       0x10    /* FIFO error */
 146 #define ICH_BCIS                        0x08    /* buffer completion interrupt status */
 147 #define ICH_LVBCI                       0x04    /* last valid buffer completion interrupt */
 148 #define ICH_CELV                        0x02    /* current equals last valid */
 149 #define ICH_DCH                         0x01    /* DMA controller halted */
 150
 151 /* PIV */
 152 #define ICH_REG_PIV_MASK                0x1f    /* mask */
 153
 154 /* CR */
 155 #define ICH_IOCE                        0x10    /* interrupt on completion enable */
 156 #define ICH_FEIE                        0x08    /* fifo error interrupt enable */
 157 #define ICH_LVBIE                       0x04    /* last valid buffer interrupt enable */
 158 #define ICH_RESETREGS                   0x02    /* reset busmaster registers */
 159 #define ICH_STARTBM                     0x01    /* start busmaster operation */
 160
 161
 162 /* global block */
 163 #define ICH_REG_GLOB_CNT                0x3c    /* dword - global control */
 164 #define   ICH_TRIE              0x00000040      /* tertiary resume interrupt enable */
 165 #define   ICH_SRIE              0x00000020      /* secondary resume interrupt enable */
 166 #define   ICH_PRIE              0x00000010      /* primary resume interrupt enable */
 167 #define   ICH_ACLINK            0x00000008      /* AClink shut off */
 168 #define   ICH_AC97WARM          0x00000004      /* AC'97 warm reset */
 169 #define   ICH_AC97COLD          0x00000002      /* AC'97 cold reset */
 170 #define   ICH_GIE               0x00000001      /* GPI interrupt enable */
 171 #define ICH_REG_GLOB_STA                0x40    /* dword - global status */
 172 #define   ICH_TRI               0x20000000      /* ICH4: tertiary (AC_SDIN2) resume interrupt */
 173 #define   ICH_TCR               0x10000000      /* ICH4: tertiary (AC_SDIN2) codec ready */
 174 #define   ICH_BCS               0x08000000      /* ICH4: bit clock stopped */
 175 #define   ICH_SPINT             0x04000000      /* ICH4: S/PDIF interrupt */
 176 #define   ICH_P2INT             0x02000000      /* ICH4: PCM2-In interrupt */
 177 #define   ICH_M2INT             0x01000000      /* ICH4: Mic2-In interrupt */
 178 #define   ICH_SAMPLE_CAP        0x00c00000      /* ICH4: sample capability bits (RO) */
 179 #define   ICH_MULTICHAN_CAP     0x00300000      /* ICH4: multi-channel capability bits (RO) */
 180 #define   ICH_MD3               0x00020000      /* modem power down semaphore */
 181 #define   ICH_AD3               0x00010000      /* audio power down semaphore */
 182 #define   ICH_RCS               0x00008000      /* read completion status */
 183 #define   ICH_BIT3              0x00004000      /* bit 3 slot 12 */
 184 #define   ICH_BIT2              0x00002000      /* bit 2 slot 12 */
 185 #define   ICH_BIT1              0x00001000      /* bit 1 slot 12 */
 186 #define   ICH_SRI               0x00000800      /* secondary (AC_SDIN1) resume interrupt */
 187 #define   ICH_PRI               0x00000400      /* primary (AC_SDIN0) resume interrupt */
 188 #define   ICH_SCR               0x00000200      /* secondary (AC_SDIN1) codec ready */
 189 #define   ICH_PCR               0x00000100      /* primary (AC_SDIN0) codec ready */
 190 #define   ICH_MCINT             0x00000080      /* MIC capture interrupt */
 191 #define   ICH_POINT             0x00000040      /* playback interrupt */
 192 #define   ICH_PIINT             0x00000020      /* capture interrupt */
 193 #define   ICH_NVSPINT           0x00000010      /* nforce spdif interrupt */
 194 #define   ICH_MOINT             0x00000004      /* modem playback interrupt */
 195 #define   ICH_MIINT             0x00000002      /* modem capture interrupt */
 196 #define   ICH_GSCI              0x00000001      /* GPI status change interrupt */
 197 #define ICH_REG_ACC_SEMA                0x44    /* byte - codec write semaphore */
 198 #define   ICH_CAS               0x01            /* codec access semaphore */
 199
 200 #define ICH_MAX_FRAGS           32              /* max hw frags */
 201
 202
 203 /*
 204  *
 205  */
 206
 207 enum { ICHD_MDMIN, ICHD_MDMOUT, ICHD_MDMLAST = ICHD_MDMOUT };
 208 enum { ALID_MDMIN, ALID_MDMOUT, ALID_MDMLAST = ALID_MDMOUT };
 209
 210 #define get_ichdev(substream) (ichdev_t *)(substream->runtime->private_data)
 211
 212 typedef struct {
 213         unsigned int ichd;                      /* ich device number */
 214         unsigned long reg_offset;               /* offset to bmaddr */
 215         u32 *bdbar;                             /* CPU address (32bit) */
 216         unsigned int bdbar_addr;                /* PCI bus address (32bit) */
 217         snd_pcm_substream_t *substream;
 218         unsigned int physbuf;                   /* physical address (32bit) */
 219         unsigned int size;
 220         unsigned int fragsize;
 221         unsigned int fragsize1;
 222         unsigned int position;
 223         int frags;
 224         int lvi;
 225         int lvi_frag;
 226         int civ;
 227         int ack;
 228         int ack_reload;
 229         unsigned int ack_bit;
 230         unsigned int roff_sr;
 231         unsigned int roff_picb;
 232         unsigned int int_sta_mask;              /* interrupt status mask */
 233         unsigned int ali_slot;                  /* ALI DMA slot */
 234         ac97_t *ac97;
 235 } ichdev_t;
 236
 237 typedef struct _snd_intel8x0m intel8x0_t;
 238
 239 struct _snd_intel8x0m {
 240         unsigned int device_type;
 241
 242         int irq;
 243
 244         unsigned int mmio;
 245         unsigned long addr;
 246         void __iomem *remap_addr;
 247         unsigned int bm_mmio;
 248         unsigned long bmaddr;
 249         void __iomem *remap_bmaddr;
 250
 251         struct pci_dev *pci;
 252         snd_card_t *card;
 253
 254         int pcm_devs;
 255         snd_pcm_t *pcm[2];
 256         ichdev_t ichd[2];
 257
 258         unsigned int in_ac97_init: 1;
 259
 260         ac97_bus_t *ac97_bus;
 261         ac97_t *ac97;
 262
 263         spinlock_t reg_lock;
 264
 265         struct snd_dma_buffer bdbars;
 266         u32 bdbars_count;
 267         u32 int_sta_reg;                /* interrupt status register */
 268         u32 int_sta_mask;               /* interrupt status mask */
 269         unsigned int pcm_pos_shift;
 270 };
 271
 272 static struct pci_device_id snd_intel8x0m_ids[] = {
 273         { 0x8086, 0x2416, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* 82801AA */
 274         { 0x8086, 0x2426, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* 82901AB */
 275         { 0x8086, 0x2446, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* 82801BA */
 276         { 0x8086, 0x2486, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH3 */
 277         { 0x8086, 0x24c6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH4 */
 278         { 0x8086, 0x24d6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH5 */
 279         { 0x8086, 0x266d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH6 */
 280         { 0x8086, 0x27dd, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH7 */
 281         { 0x8086, 0x7196, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* 440MX */
 282         { 0x1022, 0x7446, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* AMD768 */
 283         { 0x1039, 0x7013, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_SIS },   /* SI7013 */
 284         { 0x10de, 0x01c1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE */
 285         { 0x10de, 0x0069, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE2 */
 286         { 0x10de, 0x0089, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE2s */
 287         { 0x10de, 0x00d9, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE3 */
 288 #if 0
 289         { 0x1022, 0x746d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* AMD8111 */
 290         { 0x10b9, 0x5455, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALI },   /* Ali5455 */
 291 #endif
 292         { 0, }
 293 };
 294
 295 MODULE_DEVICE_TABLE(pci, snd_intel8x0m_ids);
 296
 297 /*
 298  *  Lowlevel I/O - busmaster
 299  */
 300
 301 static u8 igetbyte(intel8x0_t *chip, u32 offset)
 302 {
 303         if (chip->bm_mmio)
 304                 return readb(chip->remap_bmaddr + offset);
 305         else
 306                 return inb(chip->bmaddr + offset);
 307 }
 308
 309 static u16 igetword(intel8x0_t *chip, u32 offset)
 310 {
 311         if (chip->bm_mmio)
 312                 return readw(chip->remap_bmaddr + offset);
 313         else
 314                 return inw(chip->bmaddr + offset);
 315 }
 316
 317 static u32 igetdword(intel8x0_t *chip, u32 offset)
 318 {
 319         if (chip->bm_mmio)
 320                 return readl(chip->remap_bmaddr + offset);
 321         else
 322                 return inl(chip->bmaddr + offset);
 323 }
 324
 325 static void iputbyte(intel8x0_t *chip, u32 offset, u8 val)
 326 {
 327         if (chip->bm_mmio)
 328                 writeb(val, chip->remap_bmaddr + offset);
 329         else
 330                 outb(val, chip->bmaddr + offset);
 331 }
 332
 333 static void iputword(intel8x0_t *chip, u32 offset, u16 val)
 334 {
 335         if (chip->bm_mmio)
 336                 writew(val, chip->remap_bmaddr + offset);
 337         else
 338                 outw(val, chip->bmaddr + offset);
 339 }
 340
 341 static void iputdword(intel8x0_t *chip, u32 offset, u32 val)
 342 {
 343         if (chip->bm_mmio)
 344                 writel(val, chip->remap_bmaddr + offset);
 345         else
 346                 outl(val, chip->bmaddr + offset);
 347 }
 348
 349 /*
 350  *  Lowlevel I/O - AC'97 registers
 351  */
 352
 353 static u16 iagetword(intel8x0_t *chip, u32 offset)
 354 {
 355         if (chip->mmio)
 356                 return readw(chip->remap_addr + offset);
 357         else
 358                 return inw(chip->addr + offset);
 359 }
 360
 361 static void iaputword(intel8x0_t *chip, u32 offset, u16 val)
 362 {
 363         if (chip->mmio)
 364                 writew(val, chip->remap_addr + offset);
 365         else
 366                 outw(val, chip->addr + offset);
 367 }
 368
 369 /*
 370  *  Basic I/O
 371  */
 372
 373 /*
 374  * access to AC97 codec via normal i/o (for ICH and SIS7013)
 375  */
 376
 377 /* return the GLOB_STA bit for the corresponding codec */
 378 static unsigned int get_ich_codec_bit(intel8x0_t *chip, unsigned int codec)
 379 {
 380         static unsigned int codec_bit[3] = {
 381                 ICH_PCR, ICH_SCR, ICH_TCR
 382         };
 383         snd_assert(codec < 3, return ICH_PCR);
 384         return codec_bit[codec];
 385 }
 386
 387 static int snd_intel8x0m_codec_semaphore(intel8x0_t *chip, unsigned int codec)
 388 {
 389         int time;
 390
 391         if (codec > 1)
 392                 return -EIO;
 393         codec = get_ich_codec_bit(chip, codec);
 394
 395         /* codec ready ? */
 396         if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
 397                 return -EIO;
 398
 399         /* Anyone holding a semaphore for 1 msec should be shot... */
 400         time = 100;
 401         do {
 402                 if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
 403                         return 0;
 404                 udelay(10);
 405         } while (time--);
 406
 407         /* access to some forbidden (non existant) ac97 registers will not
 408          * reset the semaphore. So even if you don't get the semaphore, still
 409          * continue the access. We don't need the semaphore anyway. */
 410         snd_printk("codec_semaphore: semaphore is not ready [0x%x][0x%x]\n",
 411                         igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
 412         iagetword(chip, 0);     /* clear semaphore flag */
 413         /* I don't care about the semaphore */
 414         return -EBUSY;
 415 }
 416
 417 static void snd_intel8x0_codec_write(ac97_t *ac97,
 418                                      unsigned short reg,
 419                                      unsigned short val)
 420 {
 421         intel8x0_t *chip = ac97->private_data;
 422
 423         if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
 424                 if (! chip->in_ac97_init)
 425                         snd_printk("codec_write %d: semaphore is not ready for register 0x%x\n", ac97->num, reg);
 426         }
 427         iaputword(chip, reg + ac97->num * 0x80, val);
 428 }
 429
 430 static unsigned short snd_intel8x0_codec_read(ac97_t *ac97,
 431                                               unsigned short reg)
 432 {
 433         intel8x0_t *chip = ac97->private_data;
 434         unsigned short res;
 435         unsigned int tmp;
 436
 437         if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
 438                 if (! chip->in_ac97_init)
 439                         snd_printk("codec_read %d: semaphore is not ready for register 0x%x\n", ac97->num, reg);
 440                 res = 0xffff;
 441         } else {
 442                 res = iagetword(chip, reg + ac97->num * 0x80);
 443                 if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
 444                         /* reset RCS and preserve other R/WC bits */
 445                         iputdword(chip, ICHREG(GLOB_STA), tmp & ~(ICH_SRI|ICH_PRI|ICH_TRI|ICH_GSCI));
 446                         if (! chip->in_ac97_init)
 447                                 snd_printk("codec_read %d: read timeout for register 0x%x\n", ac97->num, reg);
 448                         res = 0xffff;
 449                 }
 450         }
 451         if (reg == AC97_GPIO_STATUS)
 452                 iagetword(chip, 0); /* clear semaphore */
 453         return res;
 454 }
 455
 456
 457 /*
 458  * DMA I/O
 459  */
 460 static void snd_intel8x0_setup_periods(intel8x0_t *chip, ichdev_t *ichdev)
 461 {
 462         int idx;
 463         u32 *bdbar = ichdev->bdbar;
 464         unsigned long port = ichdev->reg_offset;
 465
 466         iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
 467         if (ichdev->size == ichdev->fragsize) {
 468                 ichdev->ack_reload = ichdev->ack = 2;
 469                 ichdev->fragsize1 = ichdev->fragsize >> 1;
 470                 for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
 471                         bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
 472                         bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 473                                                      ichdev->fragsize1 >> chip->pcm_pos_shift);
 474                         bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
 475                         bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 476                                                      ichdev->fragsize1 >> chip->pcm_pos_shift);
 477                 }
 478                 ichdev->frags = 2;
 479         } else {
 480                 ichdev->ack_reload = ichdev->ack = 1;
 481                 ichdev->fragsize1 = ichdev->fragsize;
 482                 for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {
 483                         bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf + (((idx >> 1) * ichdev->fragsize) % ichdev->size));
 484                         bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 485                                                      ichdev->fragsize >> chip->pcm_pos_shift);
 486                         // printk("bdbar[%i] = 0x%x [0x%x]\n", idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
 487                 }
 488                 ichdev->frags = ichdev->size / ichdev->fragsize;
 489         }
 490         iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
 491         ichdev->civ = 0;
 492         iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
 493         ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
 494         ichdev->position = 0;
 495 #if 0
 496         printk("lvi_frag = %i, frags = %i, period_size = 0x%x, period_size1 = 0x%x\n",
 497                         ichdev->lvi_frag, ichdev->frags, ichdev->fragsize, ichdev->fragsize1);
 498 #endif
 499         /* clear interrupts */
 500         iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
 501 }
 502
 503 /*
 504  *  Interrupt handler
 505  */
 506
 507 static inline void snd_intel8x0_update(intel8x0_t *chip, ichdev_t *ichdev)
 508 {
 509         unsigned long port = ichdev->reg_offset;
 510         int civ, i, step;
 511         int ack = 0;
 512
 513         civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
 514         if (civ == ichdev->civ) {
 515                 // snd_printd("civ same %d\n", civ);
 516                 step = 1;
 517                 ichdev->civ++;
 518                 ichdev->civ &= ICH_REG_LVI_MASK;
 519         } else {
 520                 step = civ - ichdev->civ;
 521                 if (step < 0)
 522                         step += ICH_REG_LVI_MASK + 1;
 523                 // if (step != 1)
 524                 //      snd_printd("step = %d, %d -> %d\n", step, ichdev->civ, civ);
 525                 ichdev->civ = civ;
 526         }
 527
 528         ichdev->position += step * ichdev->fragsize1;
 529         ichdev->position %= ichdev->size;
 530         ichdev->lvi += step;
 531         ichdev->lvi &= ICH_REG_LVI_MASK;
 532         iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
 533         for (i = 0; i < step; i++) {
 534                 ichdev->lvi_frag++;
 535                 ichdev->lvi_frag %= ichdev->frags;
 536                 ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf + ichdev->lvi_frag * ichdev->fragsize1);
 537         // printk("new: bdbar[%i] = 0x%x [0x%x], prefetch = %i, all = 0x%x, 0x%x\n", ichdev->lvi * 2, ichdev->bdbar[ichdev->lvi * 2], ichdev->bdbar[ichdev->lvi * 2 + 1], inb(ICH_REG_OFF_PIV + port), inl(port + 4), inb(port + ICH_REG_OFF_CR));
 538                 if (--ichdev->ack == 0) {
 539                         ichdev->ack = ichdev->ack_reload;
 540                         ack = 1;
 541                 }
 542         }
 543         if (ack && ichdev->substream) {
 544                 spin_unlock(&chip->reg_lock);
 545                 snd_pcm_period_elapsed(ichdev->substream);
 546                 spin_lock(&chip->reg_lock);
 547         }
 548         iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
 549 }
 550
 551 static irqreturn_t snd_intel8x0_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 552 {
 553         intel8x0_t *chip = dev_id;
 554         ichdev_t *ichdev;
 555         unsigned int status;
 556         unsigned int i;
 557
 558         spin_lock(&chip->reg_lock);
 559         status = igetdword(chip, chip->int_sta_reg);
 560         if (status == 0xffffffff) { /* we are not yet resumed */
 561                 spin_unlock(&chip->reg_lock);
 562                 return IRQ_NONE;
 563         }
 564         if ((status & chip->int_sta_mask) == 0) {
 565                 if (status)
 566                         iputdword(chip, chip->int_sta_reg, status);
 567                 spin_unlock(&chip->reg_lock);
 568                 return IRQ_NONE;
 569         }
 570
 571         for (i = 0; i < chip->bdbars_count; i++) {
 572                 ichdev = &chip->ichd[i];
 573                 if (status & ichdev->int_sta_mask)
 574                         snd_intel8x0_update(chip, ichdev);
 575         }
 576
 577         /* ack them */
 578         iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
 579         spin_unlock(&chip->reg_lock);
 580
 581         return IRQ_HANDLED;
 582 }
 583
 584 /*
 585  *  PCM part
 586  */
 587
 588 static int snd_intel8x0_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
 589 {
 590         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 591         ichdev_t *ichdev = get_ichdev(substream);
 592         unsigned char val = 0;
 593         unsigned long port = ichdev->reg_offset;
 594
 595         switch (cmd) {
 596         case SNDRV_PCM_TRIGGER_START:
 597         case SNDRV_PCM_TRIGGER_RESUME:
 598                 val = ICH_IOCE | ICH_STARTBM;
 599                 break;
 600         case SNDRV_PCM_TRIGGER_STOP:
 601         case SNDRV_PCM_TRIGGER_SUSPEND:
 602                 val = 0;
 603                 break;
 604         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 605                 val = ICH_IOCE;
 606                 break;
 607         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 608                 val = ICH_IOCE | ICH_STARTBM;
 609                 break;
 610         default:
 611                 return -EINVAL;
 612         }
 613         iputbyte(chip, port + ICH_REG_OFF_CR, val);
 614         if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 615                 /* wait until DMA stopped */
 616                 while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
 617                 /* reset whole DMA things */
 618                 iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
 619         }
 620         return 0;
 621 }
 622
 623 static int snd_intel8x0_hw_params(snd_pcm_substream_t * substream,
 624                                   snd_pcm_hw_params_t * hw_params)
 625 {
 626         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 627 }
 628
 629 static int snd_intel8x0_hw_free(snd_pcm_substream_t * substream)
 630 {
 631         return snd_pcm_lib_free_pages(substream);
 632 }
 633
 634 static snd_pcm_uframes_t snd_intel8x0_pcm_pointer(snd_pcm_substream_t * substream)
 635 {
 636         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 637         ichdev_t *ichdev = get_ichdev(substream);
 638         size_t ptr1, ptr;
 639
 640         ptr1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb) << chip->pcm_pos_shift;
 641         if (ptr1 != 0)
 642                 ptr = ichdev->fragsize1 - ptr1;
 643         else
 644                 ptr = 0;
 645         ptr += ichdev->position;
 646         if (ptr >= ichdev->size)
 647                 return 0;
 648         return bytes_to_frames(substream->runtime, ptr);
 649 }
 650
 651 static int snd_intel8x0m_pcm_prepare(snd_pcm_substream_t * substream)
 652 {
 653         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 654         snd_pcm_runtime_t *runtime = substream->runtime;
 655         ichdev_t *ichdev = get_ichdev(substream);
 656
 657         ichdev->physbuf = runtime->dma_addr;
 658         ichdev->size = snd_pcm_lib_buffer_bytes(substream);
 659         ichdev->fragsize = snd_pcm_lib_period_bytes(substream);
 660         snd_ac97_write(ichdev->ac97, AC97_LINE1_RATE, runtime->rate);
 661         snd_ac97_write(ichdev->ac97, AC97_LINE1_LEVEL, 0);
 662         snd_intel8x0_setup_periods(chip, ichdev);
 663         return 0;
 664 }
 665
 666 static snd_pcm_hardware_t snd_intel8x0m_stream =
 667 {
 668         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 669                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 670                                  SNDRV_PCM_INFO_MMAP_VALID |
 671                                  SNDRV_PCM_INFO_PAUSE |
 672                                  SNDRV_PCM_INFO_RESUME),
 673         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
 674         .rates =                SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
 675         .rate_min =             8000,
 676         .rate_max =             16000,
 677         .channels_min =         1,
 678         .channels_max =         1,
 679         .buffer_bytes_max =     64 * 1024,
 680         .period_bytes_min =     32,
 681         .period_bytes_max =     64 * 1024,
 682         .periods_min =          1,
 683         .periods_max =          1024,
 684         .fifo_size =            0,
 685 };
 686
 687
 688 static int snd_intel8x0m_pcm_open(snd_pcm_substream_t * substream, ichdev_t *ichdev)
 689 {
 690         static unsigned int rates[] = { 8000,  9600, 12000, 16000 };
 691         static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
 692                 .count = ARRAY_SIZE(rates),
 693                 .list = rates,
 694                 .mask = 0,
 695         };
 696         snd_pcm_runtime_t *runtime = substream->runtime;
 697         int err;
 698
 699         ichdev->substream = substream;
 700         runtime->hw = snd_intel8x0m_stream;
 701         err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 702         if ( err < 0 )
 703                 return err;
 704         runtime->private_data = ichdev;
 705         return 0;
 706 }
 707
 708 static int snd_intel8x0m_playback_open(snd_pcm_substream_t * substream)
 709 {
 710         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 711
 712         return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMOUT]);
 713 }
 714
 715 static int snd_intel8x0m_playback_close(snd_pcm_substream_t * substream)
 716 {
 717         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 718
 719         chip->ichd[ICHD_MDMOUT].substream = NULL;
 720         return 0;
 721 }
 722
 723 static int snd_intel8x0m_capture_open(snd_pcm_substream_t * substream)
 724 {
 725         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 726
 727         return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMIN]);
 728 }
 729
 730 static int snd_intel8x0m_capture_close(snd_pcm_substream_t * substream)
 731 {
 732         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 733
 734         chip->ichd[ICHD_MDMIN].substream = NULL;
 735         return 0;
 736 }
 737
 738
 739 static snd_pcm_ops_t snd_intel8x0m_playback_ops = {
 740         .open =         snd_intel8x0m_playback_open,
 741         .close =        snd_intel8x0m_playback_close,
 742         .ioctl =        snd_pcm_lib_ioctl,
 743         .hw_params =    snd_intel8x0_hw_params,
 744         .hw_free =      snd_intel8x0_hw_free,
 745         .prepare =      snd_intel8x0m_pcm_prepare,
 746         .trigger =      snd_intel8x0_pcm_trigger,
 747         .pointer =      snd_intel8x0_pcm_pointer,
 748 };
 749
 750 static snd_pcm_ops_t snd_intel8x0m_capture_ops = {
 751         .open =         snd_intel8x0m_capture_open,
 752         .close =        snd_intel8x0m_capture_close,
 753         .ioctl =        snd_pcm_lib_ioctl,
 754         .hw_params =    snd_intel8x0_hw_params,
 755         .hw_free =      snd_intel8x0_hw_free,
 756         .prepare =      snd_intel8x0m_pcm_prepare,
 757         .trigger =      snd_intel8x0_pcm_trigger,
 758         .pointer =      snd_intel8x0_pcm_pointer,
 759 };
 760
 761
 762 struct ich_pcm_table {
 763         char *suffix;
 764         snd_pcm_ops_t *playback_ops;
 765         snd_pcm_ops_t *capture_ops;
 766         size_t prealloc_size;
 767         size_t prealloc_max_size;
 768         int ac97_idx;
 769 };
 770
 771 static int __devinit snd_intel8x0_pcm1(intel8x0_t *chip, int device, struct ich_pcm_table *rec)
 772 {
 773         snd_pcm_t *pcm;
 774         int err;
 775         char name[32];
 776
 777         if (rec->suffix)
 778                 sprintf(name, "Intel ICH - %s", rec->suffix);
 779         else
 780                 strcpy(name, "Intel ICH");
 781         err = snd_pcm_new(chip->card, name, device,
 782                           rec->playback_ops ? 1 : 0,
 783                           rec->capture_ops ? 1 : 0, &pcm);
 784         if (err < 0)
 785                 return err;
 786
 787         if (rec->playback_ops)
 788                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, rec->playback_ops);
 789         if (rec->capture_ops)
 790                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, rec->capture_ops);
 791
 792         pcm->private_data = chip;
 793         pcm->info_flags = 0;
 794         if (rec->suffix)
 795                 sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
 796         else
 797                 strcpy(pcm->name, chip->card->shortname);
 798         chip->pcm[device] = pcm;
 799
 800         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 801                                               snd_dma_pci_data(chip->pci),
 802                                               rec->prealloc_size,
 803                                               rec->prealloc_max_size);
 804
 805         return 0;
 806 }
 807
 808 static struct ich_pcm_table intel_pcms[] __devinitdata = {
 809         {
 810                 .suffix = "Modem",
 811                 .playback_ops = &snd_intel8x0m_playback_ops,
 812                 .capture_ops = &snd_intel8x0m_capture_ops,
 813                 .prealloc_size = 32 * 1024,
 814                 .prealloc_max_size = 64 * 1024,
 815         },
 816 };
 817
 818 static int __devinit snd_intel8x0_pcm(intel8x0_t *chip)
 819 {
 820         int i, tblsize, device, err;
 821         struct ich_pcm_table *tbl, *rec;
 822
 823 #if 1
 824         tbl = intel_pcms;
 825         tblsize = 1;
 826 #else
 827         switch (chip->device_type) {
 828         case DEVICE_NFORCE:
 829                 tbl = nforce_pcms;
 830                 tblsize = ARRAY_SIZE(nforce_pcms);
 831                 break;
 832         case DEVICE_ALI:
 833                 tbl = ali_pcms;
 834                 tblsize = ARRAY_SIZE(ali_pcms);
 835                 break;
 836         default:
 837                 tbl = intel_pcms;
 838                 tblsize = 2;
 839                 break;
 840         }
 841 #endif
 842         device = 0;
 843         for (i = 0; i < tblsize; i++) {
 844                 rec = tbl + i;
 845                 if (i > 0 && rec->ac97_idx) {
 846                         /* activate PCM only when associated AC'97 codec */
 847                         if (! chip->ichd[rec->ac97_idx].ac97)
 848                                 continue;
 849                 }
 850                 err = snd_intel8x0_pcm1(chip, device, rec);
 851                 if (err < 0)
 852                         return err;
 853                 device++;
 854         }
 855
 856         chip->pcm_devs = device;
 857         return 0;
 858 }
 859
 860
 861 /*
 862  *  Mixer part
 863  */
 864
 865 static void snd_intel8x0_mixer_free_ac97_bus(ac97_bus_t *bus)
 866 {
 867         intel8x0_t *chip = bus->private_data;
 868         chip->ac97_bus = NULL;
 869 }
 870
 871 static void snd_intel8x0_mixer_free_ac97(ac97_t *ac97)
 872 {
 873         intel8x0_t *chip = ac97->private_data;
 874         chip->ac97 = NULL;
 875 }
 876
 877
 878 static int __devinit snd_intel8x0_mixer(intel8x0_t *chip, int ac97_clock)
 879 {
 880         ac97_bus_t *pbus;
 881         ac97_template_t ac97;
 882         ac97_t *x97;
 883         int err;
 884         unsigned int glob_sta = 0;
 885         static ac97_bus_ops_t ops = {
 886                 .write = snd_intel8x0_codec_write,
 887                 .read = snd_intel8x0_codec_read,
 888         };
 889
 890         chip->in_ac97_init = 1;
 891
 892         memset(&ac97, 0, sizeof(ac97));
 893         ac97.private_data = chip;
 894         ac97.private_free = snd_intel8x0_mixer_free_ac97;
 895         ac97.scaps = AC97_SCAP_SKIP_AUDIO;
 896
 897         glob_sta = igetdword(chip, ICHREG(GLOB_STA));
 898
 899         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
 900                 goto __err;
 901         pbus->private_free = snd_intel8x0_mixer_free_ac97_bus;
 902         pbus->shared_type = AC97_SHARED_TYPE_ICH;       /* shared with audio driver */
 903         if (ac97_clock >= 8000 && ac97_clock <= 48000)
 904                 pbus->clock = ac97_clock;
 905         chip->ac97_bus = pbus;
 906
 907         ac97.pci = chip->pci;
 908         ac97.num = glob_sta & ICH_SCR ? 1 : 0;
 909         if ((err = snd_ac97_mixer(pbus, &ac97, &x97)) < 0) {
 910                 snd_printk(KERN_ERR "Unable to initialize codec #%d\n", ac97.num);
 911                 if (ac97.num == 0)
 912                         goto __err;
 913                 return err;
 914         }
 915         chip->ac97 = x97;
 916         if(ac97_is_modem(x97) && !chip->ichd[ICHD_MDMIN].ac97) {
 917                 chip->ichd[ICHD_MDMIN].ac97 = x97;
 918                 chip->ichd[ICHD_MDMOUT].ac97 = x97;
 919         }
 920
 921         chip->in_ac97_init = 0;
 922         return 0;
 923
 924  __err:
 925         /* clear the cold-reset bit for the next chance */
 926         if (chip->device_type != DEVICE_ALI)
 927                 iputdword(chip, ICHREG(GLOB_CNT), igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_AC97COLD);
 928         return err;
 929 }
 930
 931
 932 /*
 933  *
 934  */
 935
 936 #define do_delay(chip) do {\
 937         set_current_state(TASK_UNINTERRUPTIBLE);\
 938         schedule_timeout(1);\
 939 } while (0)
 940
 941 static int snd_intel8x0m_ich_chip_init(intel8x0_t *chip, int probing)
 942 {
 943         unsigned long end_time;
 944         unsigned int cnt, status, nstatus;
 945
 946         /* put logic to right state */
 947         /* first clear status bits */
 948         status = ICH_RCS | ICH_MIINT | ICH_MOINT;
 949         cnt = igetdword(chip, ICHREG(GLOB_STA));
 950         iputdword(chip, ICHREG(GLOB_STA), cnt & status);
 951
 952         /* ACLink on, 2 channels */
 953         cnt = igetdword(chip, ICHREG(GLOB_CNT));
 954         cnt &= ~(ICH_ACLINK);
 955         /* finish cold or do warm reset */
 956         cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM;
 957         iputdword(chip, ICHREG(GLOB_CNT), cnt);
 958         end_time = (jiffies + (HZ / 4)) + 1;
 959         do {
 960                 if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)
 961                         goto __ok;
 962                 do_delay(chip);
 963         } while (time_after_eq(end_time, jiffies));
 964         snd_printk("AC'97 warm reset still in progress? [0x%x]\n", igetdword(chip, ICHREG(GLOB_CNT)));
 965         return -EIO;
 966
 967       __ok:
 968         if (probing) {
 969                 /* wait for any codec ready status.
 970                  * Once it becomes ready it should remain ready
 971                  * as long as we do not disable the ac97 link.
 972                  */
 973                 end_time = jiffies + HZ;
 974                 do {
 975                         status = igetdword(chip, ICHREG(GLOB_STA)) & (ICH_PCR | ICH_SCR | ICH_TCR);
 976                         if (status)
 977                                 break;
 978                         do_delay(chip);
 979                 } while (time_after_eq(end_time, jiffies));
 980                 if (! status) {
 981                         /* no codec is found */
 982                         snd_printk(KERN_ERR "codec_ready: codec is not ready [0x%x]\n", igetdword(chip, ICHREG(GLOB_STA)));
 983                         return -EIO;
 984                 }
 985
 986                 /* up to two codecs (modem cannot be tertiary with ICH4) */
 987                 nstatus = ICH_PCR | ICH_SCR;
 988
 989                 /* wait for other codecs ready status. */
 990                 end_time = jiffies + HZ / 4;
 991                 while (status != nstatus && time_after_eq(end_time, jiffies)) {
 992                         do_delay(chip);
 993                         status |= igetdword(chip, ICHREG(GLOB_STA)) & nstatus;
 994                 }
 995
 996         } else {
 997                 /* resume phase */
 998                 status = 0;
 999                 if (chip->ac97)
1000                         status |= get_ich_codec_bit(chip, chip->ac97->num);
1001                 /* wait until all the probed codecs are ready */
1002                 end_time = jiffies + HZ;
1003                 do {
1004                         nstatus = igetdword(chip, ICHREG(GLOB_STA)) & (ICH_PCR | ICH_SCR | ICH_TCR);
1005                         if (status == nstatus)
1006                                 break;
1007                         do_delay(chip);
1008                 } while (time_after_eq(end_time, jiffies));
1009         }
1010
1011         if (chip->device_type == DEVICE_SIS) {
1012                 /* unmute the output on SIS7012 */
1013                 iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
1014         }
1015
1016         return 0;
1017 }
1018
1019 static int snd_intel8x0_chip_init(intel8x0_t *chip, int probing)
1020 {
1021         unsigned int i;
1022         int err;
1023
1024         if ((err = snd_intel8x0m_ich_chip_init(chip, probing)) < 0)
1025                 return err;
1026         iagetword(chip, 0);     /* clear semaphore flag */
1027
1028         /* disable interrupts */
1029         for (i = 0; i < chip->bdbars_count; i++)
1030                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
1031         /* reset channels */
1032         for (i = 0; i < chip->bdbars_count; i++)
1033                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
1034         /* initialize Buffer Descriptor Lists */
1035         for (i = 0; i < chip->bdbars_count; i++)
1036                 iputdword(chip, ICH_REG_OFF_BDBAR + chip->ichd[i].reg_offset, chip->ichd[i].bdbar_addr);
1037         return 0;
1038 }
1039
1040 static int snd_intel8x0_free(intel8x0_t *chip)
1041 {
1042         unsigned int i;
1043
1044         if (chip->irq < 0)
1045                 goto __hw_end;
1046         /* disable interrupts */
1047         for (i = 0; i < chip->bdbars_count; i++)
1048                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
1049         /* reset channels */
1050         for (i = 0; i < chip->bdbars_count; i++)
1051                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
1052         /* --- */
1053         synchronize_irq(chip->irq);
1054       __hw_end:
1055         if (chip->bdbars.area)
1056                 snd_dma_free_pages(&chip->bdbars);
1057         if (chip->remap_addr)
1058                 iounmap(chip->remap_addr);
1059         if (chip->remap_bmaddr)
1060                 iounmap(chip->remap_bmaddr);
1061         if (chip->irq >= 0)
1062                 free_irq(chip->irq, (void *)chip);
1063         pci_release_regions(chip->pci);
1064         pci_disable_device(chip->pci);
1065         kfree(chip);
1066         return 0;
1067 }
1068
1069 #ifdef CONFIG_PM
1070 /*
1071  * power management
1072  */
1073 static int intel8x0m_suspend(snd_card_t *card, pm_message_t state)
1074 {
1075         intel8x0_t *chip = card->pm_private_data;
1076         int i;
1077
1078         for (i = 0; i < chip->pcm_devs; i++)
1079                 snd_pcm_suspend_all(chip->pcm[i]);
1080         if (chip->ac97)
1081                 snd_ac97_suspend(chip->ac97);
1082         pci_disable_device(chip->pci);
1083         return 0;
1084 }
1085
1086 static int intel8x0m_resume(snd_card_t *card)
1087 {
1088         intel8x0_t *chip = card->pm_private_data;
1089         pci_enable_device(chip->pci);
1090         pci_set_master(chip->pci);
1091         snd_intel8x0_chip_init(chip, 0);
1092         if (chip->ac97)
1093                 snd_ac97_resume(chip->ac97);
1094
1095         return 0;
1096 }
1097 #endif /* CONFIG_PM */
1098
1099 static void snd_intel8x0m_proc_read(snd_info_entry_t * entry,
1100                                    snd_info_buffer_t * buffer)
1101 {
1102         intel8x0_t *chip = entry->private_data;
1103         unsigned int tmp;
1104
1105         snd_iprintf(buffer, "Intel8x0m\n\n");
1106         if (chip->device_type == DEVICE_ALI)
1107                 return;
1108         tmp = igetdword(chip, ICHREG(GLOB_STA));
1109         snd_iprintf(buffer, "Global control        : 0x%08x\n", igetdword(chip, ICHREG(GLOB_CNT)));
1110         snd_iprintf(buffer, "Global status         : 0x%08x\n", tmp);
1111         snd_iprintf(buffer, "AC'97 codecs ready    :%s%s%s%s\n",
1112                         tmp & ICH_PCR ? " primary" : "",
1113                         tmp & ICH_SCR ? " secondary" : "",
1114                         tmp & ICH_TCR ? " tertiary" : "",
1115                         (tmp & (ICH_PCR | ICH_SCR | ICH_TCR)) == 0 ? " none" : "");
1116 }
1117
1118 static void __devinit snd_intel8x0m_proc_init(intel8x0_t * chip)
1119 {
1120         snd_info_entry_t *entry;
1121
1122         if (! snd_card_proc_new(chip->card, "intel8x0m", &entry))
1123                 snd_info_set_text_ops(entry, chip, 1024, snd_intel8x0m_proc_read);
1124 }
1125
1126 static int snd_intel8x0_dev_free(snd_device_t *device)
1127 {
1128         intel8x0_t *chip = device->device_data;
1129         return snd_intel8x0_free(chip);
1130 }
1131
1132 struct ich_reg_info {
1133         unsigned int int_sta_mask;
1134         unsigned int offset;
1135 };
1136
1137 static int __devinit snd_intel8x0m_create(snd_card_t * card,
1138                                          struct pci_dev *pci,
1139                                          unsigned long device_type,
1140                                          intel8x0_t ** r_intel8x0)
1141 {
1142         intel8x0_t *chip;
1143         int err;
1144         unsigned int i;
1145         unsigned int int_sta_masks;
1146         ichdev_t *ichdev;
1147         static snd_device_ops_t ops = {
1148                 .dev_free =     snd_intel8x0_dev_free,
1149         };
1150         static struct ich_reg_info intel_regs[2] = {
1151                 { ICH_MIINT, 0 },
1152                 { ICH_MOINT, 0x10 },
1153         };
1154         struct ich_reg_info *tbl;
1155
1156         *r_intel8x0 = NULL;
1157
1158         if ((err = pci_enable_device(pci)) < 0)
1159                 return err;
1160
1161         chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
1162         if (chip == NULL) {
1163                 pci_disable_device(pci);
1164                 return -ENOMEM;
1165         }
1166         spin_lock_init(&chip->reg_lock);
1167         chip->device_type = device_type;
1168         chip->card = card;
1169         chip->pci = pci;
1170         chip->irq = -1;
1171
1172         if ((err = pci_request_regions(pci, card->shortname)) < 0) {
1173                 kfree(chip);
1174                 pci_disable_device(pci);
1175                 return err;
1176         }
1177
1178         if (device_type == DEVICE_ALI) {
1179                 /* ALI5455 has no ac97 region */
1180                 chip->bmaddr = pci_resource_start(pci, 0);
1181                 goto port_inited;
1182         }
1183
1184         if (pci_resource_flags(pci, 2) & IORESOURCE_MEM) {      /* ICH4 and Nforce */
1185                 chip->mmio = 1;
1186                 chip->addr = pci_resource_start(pci, 2);
1187                 chip->remap_addr = ioremap_nocache(chip->addr,
1188                                                    pci_resource_len(pci, 2));
1189                 if (chip->remap_addr == NULL) {
1190                         snd_printk("AC'97 space ioremap problem\n");
1191                         snd_intel8x0_free(chip);
1192                         return -EIO;
1193                 }
1194         } else {
1195                 chip->addr = pci_resource_start(pci, 0);
1196         }
1197         if (pci_resource_flags(pci, 3) & IORESOURCE_MEM) {      /* ICH4 */
1198                 chip->bm_mmio = 1;
1199                 chip->bmaddr = pci_resource_start(pci, 3);
1200                 chip->remap_bmaddr = ioremap_nocache(chip->bmaddr,
1201                                                      pci_resource_len(pci, 3));
1202                 if (chip->remap_bmaddr == NULL) {
1203                         snd_printk("Controller space ioremap problem\n");
1204                         snd_intel8x0_free(chip);
1205                         return -EIO;
1206                 }
1207         } else {
1208                 chip->bmaddr = pci_resource_start(pci, 1);
1209         }
1210
1211  port_inited:
1212         if (request_irq(pci->irq, snd_intel8x0_interrupt, SA_INTERRUPT|SA_SHIRQ, card->shortname, (void *)chip)) {
1213                 snd_printk("unable to grab IRQ %d\n", pci->irq);
1214                 snd_intel8x0_free(chip);
1215                 return -EBUSY;
1216         }
1217         chip->irq = pci->irq;
1218         pci_set_master(pci);
1219         synchronize_irq(chip->irq);
1220
1221         /* initialize offsets */
1222         chip->bdbars_count = 2;
1223         tbl = intel_regs;
1224
1225         for (i = 0; i < chip->bdbars_count; i++) {
1226                 ichdev = &chip->ichd[i];
1227                 ichdev->ichd = i;
1228                 ichdev->reg_offset = tbl[i].offset;
1229                 ichdev->int_sta_mask = tbl[i].int_sta_mask;
1230                 if (device_type == DEVICE_SIS) {
1231                         /* SiS 7013 swaps the registers */
1232                         ichdev->roff_sr = ICH_REG_OFF_PICB;
1233                         ichdev->roff_picb = ICH_REG_OFF_SR;
1234                 } else {
1235                         ichdev->roff_sr = ICH_REG_OFF_SR;
1236                         ichdev->roff_picb = ICH_REG_OFF_PICB;
1237                 }
1238                 if (device_type == DEVICE_ALI)
1239                         ichdev->ali_slot = (ichdev->reg_offset - 0x40) / 0x10;
1240         }
1241         /* SIS7013 handles the pcm data in bytes, others are in words */
1242         chip->pcm_pos_shift = (device_type == DEVICE_SIS) ? 0 : 1;
1243
1244         /* allocate buffer descriptor lists */
1245         /* the start of each lists must be aligned to 8 bytes */
1246         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1247                                 chip->bdbars_count * sizeof(u32) * ICH_MAX_FRAGS * 2,
1248                                 &chip->bdbars) < 0) {
1249                 snd_intel8x0_free(chip);
1250                 return -ENOMEM;
1251         }
1252         /* tables must be aligned to 8 bytes here, but the kernel pages
1253            are much bigger, so we don't care (on i386) */
1254         int_sta_masks = 0;
1255         for (i = 0; i < chip->bdbars_count; i++) {
1256                 ichdev = &chip->ichd[i];
1257                 ichdev->bdbar = ((u32 *)chip->bdbars.area) + (i * ICH_MAX_FRAGS * 2);
1258                 ichdev->bdbar_addr = chip->bdbars.addr + (i * sizeof(u32) * ICH_MAX_FRAGS * 2);
1259                 int_sta_masks |= ichdev->int_sta_mask;
1260         }
1261         chip->int_sta_reg = ICH_REG_GLOB_STA;
1262         chip->int_sta_mask = int_sta_masks;
1263
1264         if ((err = snd_intel8x0_chip_init(chip, 1)) < 0) {
1265                 snd_intel8x0_free(chip);
1266                 return err;
1267         }
1268
1269         snd_card_set_pm_callback(card, intel8x0m_suspend, intel8x0m_resume, chip);
1270
1271         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1272                 snd_intel8x0_free(chip);
1273                 return err;
1274         }
1275
1276         snd_card_set_dev(card, &pci->dev);
1277
1278         *r_intel8x0 = chip;
1279         return 0;
1280 }
1281
1282 static struct shortname_table {
1283         unsigned int id;
1284         const char *s;
1285 } shortnames[] __devinitdata = {
1286         { PCI_DEVICE_ID_INTEL_82801_6, "Intel 82801AA-ICH" },
1287         { PCI_DEVICE_ID_INTEL_82901_6, "Intel 82901AB-ICH0" },
1288         { PCI_DEVICE_ID_INTEL_82801BA_6, "Intel 82801BA-ICH2" },
1289         { PCI_DEVICE_ID_INTEL_440MX_6, "Intel 440MX" },
1290         { PCI_DEVICE_ID_INTEL_ICH3_6, "Intel 82801CA-ICH3" },
1291         { PCI_DEVICE_ID_INTEL_ICH4_6, "Intel 82801DB-ICH4" },
1292         { PCI_DEVICE_ID_INTEL_ICH5_6, "Intel ICH5" },
1293         { PCI_DEVICE_ID_INTEL_ICH6_6, "Intel ICH6" },
1294         { PCI_DEVICE_ID_INTEL_ICH7_6, "Intel ICH7" },
1295         { 0x7446, "AMD AMD768" },
1296         { PCI_DEVICE_ID_SI_7013, "SiS SI7013" },
1297         { PCI_DEVICE_ID_NVIDIA_MCP_MODEM, "NVidia nForce" },
1298         { PCI_DEVICE_ID_NVIDIA_MCP2_MODEM, "NVidia nForce2" },
1299         { PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM, "NVidia nForce2s" },
1300         { PCI_DEVICE_ID_NVIDIA_MCP3_MODEM, "NVidia nForce3" },
1301 #if 0
1302         { 0x5455, "ALi M5455" },
1303         { 0x746d, "AMD AMD8111" },
1304 #endif
1305         { 0 },
1306 };
1307
1308 static int __devinit snd_intel8x0m_probe(struct pci_dev *pci,
1309                                         const struct pci_device_id *pci_id)
1310 {
1311         static int dev;
1312         snd_card_t *card;
1313         intel8x0_t *chip;
1314         int err;
1315         struct shortname_table *name;
1316
1317         if (dev >= SNDRV_CARDS)
1318                 return -ENODEV;
1319         if (!enable[dev]) {
1320                 dev++;
1321                 return -ENOENT;
1322         }
1323
1324         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1325         if (card == NULL)
1326                 return -ENOMEM;
1327
1328         strcpy(card->driver, "ICH-MODEM");
1329         strcpy(card->shortname, "Intel ICH");
1330         for (name = shortnames; name->id; name++) {
1331                 if (pci->device == name->id) {
1332                         strcpy(card->shortname, name->s);
1333                         break;
1334                 }
1335         }
1336         strcat(card->shortname," Modem");
1337
1338         if ((err = snd_intel8x0m_create(card, pci, pci_id->driver_data, &chip)) < 0) {
1339                 snd_card_free(card);
1340                 return err;
1341         }
1342
1343         if ((err = snd_intel8x0_mixer(chip, ac97_clock[dev])) < 0) {
1344                 snd_card_free(card);
1345                 return err;
1346         }
1347         if ((err = snd_intel8x0_pcm(chip)) < 0) {
1348                 snd_card_free(card);
1349                 return err;
1350         }
1351
1352         snd_intel8x0m_proc_init(chip);
1353
1354         sprintf(card->longname, "%s at 0x%lx, irq %i",
1355                 card->shortname, chip->addr, chip->irq);
1356
1357         if ((err = snd_card_register(card)) < 0) {
1358                 snd_card_free(card);
1359                 return err;
1360         }
1361         pci_set_drvdata(pci, card);
1362         dev++;
1363         return 0;
1364 }
1365
1366 static void __devexit snd_intel8x0m_remove(struct pci_dev *pci)
1367 {
1368         snd_card_free(pci_get_drvdata(pci));
1369         pci_set_drvdata(pci, NULL);
1370 }
1371
1372 static struct pci_driver driver = {
1373         .name = "Intel ICH Modem",
1374         .id_table = snd_intel8x0m_ids,
1375         .probe = snd_intel8x0m_probe,
1376         .remove = __devexit_p(snd_intel8x0m_remove),
1377         SND_PCI_PM_CALLBACKS
1378 };
1379
1380
1381 static int __init alsa_card_intel8x0m_init(void)
1382 {
1383         return pci_register_driver(&driver);
1384 }
1385
1386 static void __exit alsa_card_intel8x0m_exit(void)
1387 {
1388         pci_unregister_driver(&driver);
1389 }
1390
1391 module_init(alsa_card_intel8x0m_init)
1392 module_exit(alsa_card_intel8x0m_exit)