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 enum { DEVICE_INTEL, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
  77
  78 #define ICHREG(x) ICH_REG_##x
  79
  80 #define DEFINE_REGSET(name,base) \
  81 enum { \
  82         ICH_REG_##name##_BDBAR  = base + 0x0,   /* dword - buffer descriptor list base address */ \
  83         ICH_REG_##name##_CIV    = base + 0x04,  /* byte - current index value */ \
  84         ICH_REG_##name##_LVI    = base + 0x05,  /* byte - last valid index */ \
  85         ICH_REG_##name##_SR     = base + 0x06,  /* byte - status register */ \
  86         ICH_REG_##name##_PICB   = base + 0x08,  /* word - position in current buffer */ \
  87         ICH_REG_##name##_PIV    = base + 0x0a,  /* byte - prefetched index value */ \
  88         ICH_REG_##name##_CR     = base + 0x0b,  /* byte - control register */ \
  89 };
  90
  91 /* busmaster blocks */
  92 DEFINE_REGSET(OFF, 0);          /* offset */
  93
  94 /* values for each busmaster block */
  95
  96 /* LVI */
  97 #define ICH_REG_LVI_MASK                0x1f
  98
  99 /* SR */
 100 #define ICH_FIFOE                       0x10    /* FIFO error */
 101 #define ICH_BCIS                        0x08    /* buffer completion interrupt status */
 102 #define ICH_LVBCI                       0x04    /* last valid buffer completion interrupt */
 103 #define ICH_CELV                        0x02    /* current equals last valid */
 104 #define ICH_DCH                         0x01    /* DMA controller halted */
 105
 106 /* PIV */
 107 #define ICH_REG_PIV_MASK                0x1f    /* mask */
 108
 109 /* CR */
 110 #define ICH_IOCE                        0x10    /* interrupt on completion enable */
 111 #define ICH_FEIE                        0x08    /* fifo error interrupt enable */
 112 #define ICH_LVBIE                       0x04    /* last valid buffer interrupt enable */
 113 #define ICH_RESETREGS                   0x02    /* reset busmaster registers */
 114 #define ICH_STARTBM                     0x01    /* start busmaster operation */
 115
 116
 117 /* global block */
 118 #define ICH_REG_GLOB_CNT                0x3c    /* dword - global control */
 119 #define   ICH_TRIE              0x00000040      /* tertiary resume interrupt enable */
 120 #define   ICH_SRIE              0x00000020      /* secondary resume interrupt enable */
 121 #define   ICH_PRIE              0x00000010      /* primary resume interrupt enable */
 122 #define   ICH_ACLINK            0x00000008      /* AClink shut off */
 123 #define   ICH_AC97WARM          0x00000004      /* AC'97 warm reset */
 124 #define   ICH_AC97COLD          0x00000002      /* AC'97 cold reset */
 125 #define   ICH_GIE               0x00000001      /* GPI interrupt enable */
 126 #define ICH_REG_GLOB_STA                0x40    /* dword - global status */
 127 #define   ICH_TRI               0x20000000      /* ICH4: tertiary (AC_SDIN2) resume interrupt */
 128 #define   ICH_TCR               0x10000000      /* ICH4: tertiary (AC_SDIN2) codec ready */
 129 #define   ICH_BCS               0x08000000      /* ICH4: bit clock stopped */
 130 #define   ICH_SPINT             0x04000000      /* ICH4: S/PDIF interrupt */
 131 #define   ICH_P2INT             0x02000000      /* ICH4: PCM2-In interrupt */
 132 #define   ICH_M2INT             0x01000000      /* ICH4: Mic2-In interrupt */
 133 #define   ICH_SAMPLE_CAP        0x00c00000      /* ICH4: sample capability bits (RO) */
 134 #define   ICH_MULTICHAN_CAP     0x00300000      /* ICH4: multi-channel capability bits (RO) */
 135 #define   ICH_MD3               0x00020000      /* modem power down semaphore */
 136 #define   ICH_AD3               0x00010000      /* audio power down semaphore */
 137 #define   ICH_RCS               0x00008000      /* read completion status */
 138 #define   ICH_BIT3              0x00004000      /* bit 3 slot 12 */
 139 #define   ICH_BIT2              0x00002000      /* bit 2 slot 12 */
 140 #define   ICH_BIT1              0x00001000      /* bit 1 slot 12 */
 141 #define   ICH_SRI               0x00000800      /* secondary (AC_SDIN1) resume interrupt */
 142 #define   ICH_PRI               0x00000400      /* primary (AC_SDIN0) resume interrupt */
 143 #define   ICH_SCR               0x00000200      /* secondary (AC_SDIN1) codec ready */
 144 #define   ICH_PCR               0x00000100      /* primary (AC_SDIN0) codec ready */
 145 #define   ICH_MCINT             0x00000080      /* MIC capture interrupt */
 146 #define   ICH_POINT             0x00000040      /* playback interrupt */
 147 #define   ICH_PIINT             0x00000020      /* capture interrupt */
 148 #define   ICH_NVSPINT           0x00000010      /* nforce spdif interrupt */
 149 #define   ICH_MOINT             0x00000004      /* modem playback interrupt */
 150 #define   ICH_MIINT             0x00000002      /* modem capture interrupt */
 151 #define   ICH_GSCI              0x00000001      /* GPI status change interrupt */
 152 #define ICH_REG_ACC_SEMA                0x44    /* byte - codec write semaphore */
 153 #define   ICH_CAS               0x01            /* codec access semaphore */
 154
 155 #define ICH_MAX_FRAGS           32              /* max hw frags */
 156
 157
 158 /*
 159  *
 160  */
 161
 162 enum { ICHD_MDMIN, ICHD_MDMOUT, ICHD_MDMLAST = ICHD_MDMOUT };
 163 enum { ALID_MDMIN, ALID_MDMOUT, ALID_MDMLAST = ALID_MDMOUT };
 164
 165 #define get_ichdev(substream) (ichdev_t *)(substream->runtime->private_data)
 166
 167 typedef struct {
 168         unsigned int ichd;                      /* ich device number */
 169         unsigned long reg_offset;               /* offset to bmaddr */
 170         u32 *bdbar;                             /* CPU address (32bit) */
 171         unsigned int bdbar_addr;                /* PCI bus address (32bit) */
 172         snd_pcm_substream_t *substream;
 173         unsigned int physbuf;                   /* physical address (32bit) */
 174         unsigned int size;
 175         unsigned int fragsize;
 176         unsigned int fragsize1;
 177         unsigned int position;
 178         int frags;
 179         int lvi;
 180         int lvi_frag;
 181         int civ;
 182         int ack;
 183         int ack_reload;
 184         unsigned int ack_bit;
 185         unsigned int roff_sr;
 186         unsigned int roff_picb;
 187         unsigned int int_sta_mask;              /* interrupt status mask */
 188         unsigned int ali_slot;                  /* ALI DMA slot */
 189         ac97_t *ac97;
 190 } ichdev_t;
 191
 192 typedef struct _snd_intel8x0m intel8x0_t;
 193
 194 struct _snd_intel8x0m {
 195         unsigned int device_type;
 196
 197         int irq;
 198
 199         unsigned int mmio;
 200         unsigned long addr;
 201         void __iomem *remap_addr;
 202         unsigned int bm_mmio;
 203         unsigned long bmaddr;
 204         void __iomem *remap_bmaddr;
 205
 206         struct pci_dev *pci;
 207         snd_card_t *card;
 208
 209         int pcm_devs;
 210         snd_pcm_t *pcm[2];
 211         ichdev_t ichd[2];
 212
 213         unsigned int in_ac97_init: 1;
 214
 215         ac97_bus_t *ac97_bus;
 216         ac97_t *ac97;
 217
 218         spinlock_t reg_lock;
 219
 220         struct snd_dma_buffer bdbars;
 221         u32 bdbars_count;
 222         u32 int_sta_reg;                /* interrupt status register */
 223         u32 int_sta_mask;               /* interrupt status mask */
 224         unsigned int pcm_pos_shift;
 225 };
 226
 227 static struct pci_device_id snd_intel8x0m_ids[] = {
 228         { 0x8086, 0x2416, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* 82801AA */
 229         { 0x8086, 0x2426, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* 82901AB */
 230         { 0x8086, 0x2446, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* 82801BA */
 231         { 0x8086, 0x2486, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH3 */
 232         { 0x8086, 0x24c6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH4 */
 233         { 0x8086, 0x24d6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH5 */
 234         { 0x8086, 0x266d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH6 */
 235         { 0x8086, 0x27dd, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH7 */
 236         { 0x8086, 0x7196, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* 440MX */
 237         { 0x1022, 0x7446, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* AMD768 */
 238         { 0x1039, 0x7013, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_SIS },   /* SI7013 */
 239         { 0x10de, 0x01c1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE */
 240         { 0x10de, 0x0069, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE2 */
 241         { 0x10de, 0x0089, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE2s */
 242         { 0x10de, 0x00d9, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE3 */
 243 #if 0
 244         { 0x1022, 0x746d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* AMD8111 */
 245         { 0x10b9, 0x5455, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALI },   /* Ali5455 */
 246 #endif
 247         { 0, }
 248 };
 249
 250 MODULE_DEVICE_TABLE(pci, snd_intel8x0m_ids);
 251
 252 /*
 253  *  Lowlevel I/O - busmaster
 254  */
 255
 256 static u8 igetbyte(intel8x0_t *chip, u32 offset)
 257 {
 258         if (chip->bm_mmio)
 259                 return readb(chip->remap_bmaddr + offset);
 260         else
 261                 return inb(chip->bmaddr + offset);
 262 }
 263
 264 static u16 igetword(intel8x0_t *chip, u32 offset)
 265 {
 266         if (chip->bm_mmio)
 267                 return readw(chip->remap_bmaddr + offset);
 268         else
 269                 return inw(chip->bmaddr + offset);
 270 }
 271
 272 static u32 igetdword(intel8x0_t *chip, u32 offset)
 273 {
 274         if (chip->bm_mmio)
 275                 return readl(chip->remap_bmaddr + offset);
 276         else
 277                 return inl(chip->bmaddr + offset);
 278 }
 279
 280 static void iputbyte(intel8x0_t *chip, u32 offset, u8 val)
 281 {
 282         if (chip->bm_mmio)
 283                 writeb(val, chip->remap_bmaddr + offset);
 284         else
 285                 outb(val, chip->bmaddr + offset);
 286 }
 287
 288 static void iputword(intel8x0_t *chip, u32 offset, u16 val)
 289 {
 290         if (chip->bm_mmio)
 291                 writew(val, chip->remap_bmaddr + offset);
 292         else
 293                 outw(val, chip->bmaddr + offset);
 294 }
 295
 296 static void iputdword(intel8x0_t *chip, u32 offset, u32 val)
 297 {
 298         if (chip->bm_mmio)
 299                 writel(val, chip->remap_bmaddr + offset);
 300         else
 301                 outl(val, chip->bmaddr + offset);
 302 }
 303
 304 /*
 305  *  Lowlevel I/O - AC'97 registers
 306  */
 307
 308 static u16 iagetword(intel8x0_t *chip, u32 offset)
 309 {
 310         if (chip->mmio)
 311                 return readw(chip->remap_addr + offset);
 312         else
 313                 return inw(chip->addr + offset);
 314 }
 315
 316 static void iaputword(intel8x0_t *chip, u32 offset, u16 val)
 317 {
 318         if (chip->mmio)
 319                 writew(val, chip->remap_addr + offset);
 320         else
 321                 outw(val, chip->addr + offset);
 322 }
 323
 324 /*
 325  *  Basic I/O
 326  */
 327
 328 /*
 329  * access to AC97 codec via normal i/o (for ICH and SIS7013)
 330  */
 331
 332 /* return the GLOB_STA bit for the corresponding codec */
 333 static unsigned int get_ich_codec_bit(intel8x0_t *chip, unsigned int codec)
 334 {
 335         static unsigned int codec_bit[3] = {
 336                 ICH_PCR, ICH_SCR, ICH_TCR
 337         };
 338         snd_assert(codec < 3, return ICH_PCR);
 339         return codec_bit[codec];
 340 }
 341
 342 static int snd_intel8x0m_codec_semaphore(intel8x0_t *chip, unsigned int codec)
 343 {
 344         int time;
 345
 346         if (codec > 1)
 347                 return -EIO;
 348         codec = get_ich_codec_bit(chip, codec);
 349
 350         /* codec ready ? */
 351         if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
 352                 return -EIO;
 353
 354         /* Anyone holding a semaphore for 1 msec should be shot... */
 355         time = 100;
 356         do {
 357                 if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
 358                         return 0;
 359                 udelay(10);
 360         } while (time--);
 361
 362         /* access to some forbidden (non existant) ac97 registers will not
 363          * reset the semaphore. So even if you don't get the semaphore, still
 364          * continue the access. We don't need the semaphore anyway. */
 365         snd_printk("codec_semaphore: semaphore is not ready [0x%x][0x%x]\n",
 366                         igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
 367         iagetword(chip, 0);     /* clear semaphore flag */
 368         /* I don't care about the semaphore */
 369         return -EBUSY;
 370 }
 371
 372 static void snd_intel8x0_codec_write(ac97_t *ac97,
 373                                      unsigned short reg,
 374                                      unsigned short val)
 375 {
 376         intel8x0_t *chip = ac97->private_data;
 377
 378         if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
 379                 if (! chip->in_ac97_init)
 380                         snd_printk("codec_write %d: semaphore is not ready for register 0x%x\n", ac97->num, reg);
 381         }
 382         iaputword(chip, reg + ac97->num * 0x80, val);
 383 }
 384
 385 static unsigned short snd_intel8x0_codec_read(ac97_t *ac97,
 386                                               unsigned short reg)
 387 {
 388         intel8x0_t *chip = ac97->private_data;
 389         unsigned short res;
 390         unsigned int tmp;
 391
 392         if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
 393                 if (! chip->in_ac97_init)
 394                         snd_printk("codec_read %d: semaphore is not ready for register 0x%x\n", ac97->num, reg);
 395                 res = 0xffff;
 396         } else {
 397                 res = iagetword(chip, reg + ac97->num * 0x80);
 398                 if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
 399                         /* reset RCS and preserve other R/WC bits */
 400                         iputdword(chip, ICHREG(GLOB_STA), tmp & ~(ICH_SRI|ICH_PRI|ICH_TRI|ICH_GSCI));
 401                         if (! chip->in_ac97_init)
 402                                 snd_printk("codec_read %d: read timeout for register 0x%x\n", ac97->num, reg);
 403                         res = 0xffff;
 404                 }
 405         }
 406         if (reg == AC97_GPIO_STATUS)
 407                 iagetword(chip, 0); /* clear semaphore */
 408         return res;
 409 }
 410
 411
 412 /*
 413  * DMA I/O
 414  */
 415 static void snd_intel8x0_setup_periods(intel8x0_t *chip, ichdev_t *ichdev)
 416 {
 417         int idx;
 418         u32 *bdbar = ichdev->bdbar;
 419         unsigned long port = ichdev->reg_offset;
 420
 421         iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
 422         if (ichdev->size == ichdev->fragsize) {
 423                 ichdev->ack_reload = ichdev->ack = 2;
 424                 ichdev->fragsize1 = ichdev->fragsize >> 1;
 425                 for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
 426                         bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
 427                         bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 428                                                      ichdev->fragsize1 >> chip->pcm_pos_shift);
 429                         bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
 430                         bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 431                                                      ichdev->fragsize1 >> chip->pcm_pos_shift);
 432                 }
 433                 ichdev->frags = 2;
 434         } else {
 435                 ichdev->ack_reload = ichdev->ack = 1;
 436                 ichdev->fragsize1 = ichdev->fragsize;
 437                 for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {
 438                         bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf + (((idx >> 1) * ichdev->fragsize) % ichdev->size));
 439                         bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 440                                                      ichdev->fragsize >> chip->pcm_pos_shift);
 441                         // printk("bdbar[%i] = 0x%x [0x%x]\n", idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
 442                 }
 443                 ichdev->frags = ichdev->size / ichdev->fragsize;
 444         }
 445         iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
 446         ichdev->civ = 0;
 447         iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
 448         ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
 449         ichdev->position = 0;
 450 #if 0
 451         printk("lvi_frag = %i, frags = %i, period_size = 0x%x, period_size1 = 0x%x\n",
 452                         ichdev->lvi_frag, ichdev->frags, ichdev->fragsize, ichdev->fragsize1);
 453 #endif
 454         /* clear interrupts */
 455         iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
 456 }
 457
 458 /*
 459  *  Interrupt handler
 460  */
 461
 462 static inline void snd_intel8x0_update(intel8x0_t *chip, ichdev_t *ichdev)
 463 {
 464         unsigned long port = ichdev->reg_offset;
 465         int civ, i, step;
 466         int ack = 0;
 467
 468         civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
 469         if (civ == ichdev->civ) {
 470                 // snd_printd("civ same %d\n", civ);
 471                 step = 1;
 472                 ichdev->civ++;
 473                 ichdev->civ &= ICH_REG_LVI_MASK;
 474         } else {
 475                 step = civ - ichdev->civ;
 476                 if (step < 0)
 477                         step += ICH_REG_LVI_MASK + 1;
 478                 // if (step != 1)
 479                 //      snd_printd("step = %d, %d -> %d\n", step, ichdev->civ, civ);
 480                 ichdev->civ = civ;
 481         }
 482
 483         ichdev->position += step * ichdev->fragsize1;
 484         ichdev->position %= ichdev->size;
 485         ichdev->lvi += step;
 486         ichdev->lvi &= ICH_REG_LVI_MASK;
 487         iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
 488         for (i = 0; i < step; i++) {
 489                 ichdev->lvi_frag++;
 490                 ichdev->lvi_frag %= ichdev->frags;
 491                 ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf + ichdev->lvi_frag * ichdev->fragsize1);
 492         // 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));
 493                 if (--ichdev->ack == 0) {
 494                         ichdev->ack = ichdev->ack_reload;
 495                         ack = 1;
 496                 }
 497         }
 498         if (ack && ichdev->substream) {
 499                 spin_unlock(&chip->reg_lock);
 500                 snd_pcm_period_elapsed(ichdev->substream);
 501                 spin_lock(&chip->reg_lock);
 502         }
 503         iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
 504 }
 505
 506 static irqreturn_t snd_intel8x0_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 507 {
 508         intel8x0_t *chip = dev_id;
 509         ichdev_t *ichdev;
 510         unsigned int status;
 511         unsigned int i;
 512
 513         spin_lock(&chip->reg_lock);
 514         status = igetdword(chip, chip->int_sta_reg);
 515         if (status == 0xffffffff) { /* we are not yet resumed */
 516                 spin_unlock(&chip->reg_lock);
 517                 return IRQ_NONE;
 518         }
 519         if ((status & chip->int_sta_mask) == 0) {
 520                 if (status)
 521                         iputdword(chip, chip->int_sta_reg, status);
 522                 spin_unlock(&chip->reg_lock);
 523                 return IRQ_NONE;
 524         }
 525
 526         for (i = 0; i < chip->bdbars_count; i++) {
 527                 ichdev = &chip->ichd[i];
 528                 if (status & ichdev->int_sta_mask)
 529                         snd_intel8x0_update(chip, ichdev);
 530         }
 531
 532         /* ack them */
 533         iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
 534         spin_unlock(&chip->reg_lock);
 535
 536         return IRQ_HANDLED;
 537 }
 538
 539 /*
 540  *  PCM part
 541  */
 542
 543 static int snd_intel8x0_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
 544 {
 545         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 546         ichdev_t *ichdev = get_ichdev(substream);
 547         unsigned char val = 0;
 548         unsigned long port = ichdev->reg_offset;
 549
 550         switch (cmd) {
 551         case SNDRV_PCM_TRIGGER_START:
 552         case SNDRV_PCM_TRIGGER_RESUME:
 553                 val = ICH_IOCE | ICH_STARTBM;
 554                 break;
 555         case SNDRV_PCM_TRIGGER_STOP:
 556         case SNDRV_PCM_TRIGGER_SUSPEND:
 557                 val = 0;
 558                 break;
 559         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 560                 val = ICH_IOCE;
 561                 break;
 562         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 563                 val = ICH_IOCE | ICH_STARTBM;
 564                 break;
 565         default:
 566                 return -EINVAL;
 567         }
 568         iputbyte(chip, port + ICH_REG_OFF_CR, val);
 569         if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 570                 /* wait until DMA stopped */
 571                 while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
 572                 /* reset whole DMA things */
 573                 iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
 574         }
 575         return 0;
 576 }
 577
 578 static int snd_intel8x0_hw_params(snd_pcm_substream_t * substream,
 579                                   snd_pcm_hw_params_t * hw_params)
 580 {
 581         return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 582 }
 583
 584 static int snd_intel8x0_hw_free(snd_pcm_substream_t * substream)
 585 {
 586         return snd_pcm_lib_free_pages(substream);
 587 }
 588
 589 static snd_pcm_uframes_t snd_intel8x0_pcm_pointer(snd_pcm_substream_t * substream)
 590 {
 591         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 592         ichdev_t *ichdev = get_ichdev(substream);
 593         size_t ptr1, ptr;
 594
 595         ptr1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb) << chip->pcm_pos_shift;
 596         if (ptr1 != 0)
 597                 ptr = ichdev->fragsize1 - ptr1;
 598         else
 599                 ptr = 0;
 600         ptr += ichdev->position;
 601         if (ptr >= ichdev->size)
 602                 return 0;
 603         return bytes_to_frames(substream->runtime, ptr);
 604 }
 605
 606 static int snd_intel8x0m_pcm_prepare(snd_pcm_substream_t * substream)
 607 {
 608         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 609         snd_pcm_runtime_t *runtime = substream->runtime;
 610         ichdev_t *ichdev = get_ichdev(substream);
 611
 612         ichdev->physbuf = runtime->dma_addr;
 613         ichdev->size = snd_pcm_lib_buffer_bytes(substream);
 614         ichdev->fragsize = snd_pcm_lib_period_bytes(substream);
 615         snd_ac97_write(ichdev->ac97, AC97_LINE1_RATE, runtime->rate);
 616         snd_ac97_write(ichdev->ac97, AC97_LINE1_LEVEL, 0);
 617         snd_intel8x0_setup_periods(chip, ichdev);
 618         return 0;
 619 }
 620
 621 static snd_pcm_hardware_t snd_intel8x0m_stream =
 622 {
 623         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 624                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
 625                                  SNDRV_PCM_INFO_MMAP_VALID |
 626                                  SNDRV_PCM_INFO_PAUSE |
 627                                  SNDRV_PCM_INFO_RESUME),
 628         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
 629         .rates =                SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
 630         .rate_min =             8000,
 631         .rate_max =             16000,
 632         .channels_min =         1,
 633         .channels_max =         1,
 634         .buffer_bytes_max =     64 * 1024,
 635         .period_bytes_min =     32,
 636         .period_bytes_max =     64 * 1024,
 637         .periods_min =          1,
 638         .periods_max =          1024,
 639         .fifo_size =            0,
 640 };
 641
 642
 643 static int snd_intel8x0m_pcm_open(snd_pcm_substream_t * substream, ichdev_t *ichdev)
 644 {
 645         static unsigned int rates[] = { 8000,  9600, 12000, 16000 };
 646         static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
 647                 .count = ARRAY_SIZE(rates),
 648                 .list = rates,
 649                 .mask = 0,
 650         };
 651         snd_pcm_runtime_t *runtime = substream->runtime;
 652         int err;
 653
 654         ichdev->substream = substream;
 655         runtime->hw = snd_intel8x0m_stream;
 656         err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
 657         if ( err < 0 )
 658                 return err;
 659         runtime->private_data = ichdev;
 660         return 0;
 661 }
 662
 663 static int snd_intel8x0m_playback_open(snd_pcm_substream_t * substream)
 664 {
 665         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 666
 667         return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMOUT]);
 668 }
 669
 670 static int snd_intel8x0m_playback_close(snd_pcm_substream_t * substream)
 671 {
 672         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 673
 674         chip->ichd[ICHD_MDMOUT].substream = NULL;
 675         return 0;
 676 }
 677
 678 static int snd_intel8x0m_capture_open(snd_pcm_substream_t * substream)
 679 {
 680         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 681
 682         return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMIN]);
 683 }
 684
 685 static int snd_intel8x0m_capture_close(snd_pcm_substream_t * substream)
 686 {
 687         intel8x0_t *chip = snd_pcm_substream_chip(substream);
 688
 689         chip->ichd[ICHD_MDMIN].substream = NULL;
 690         return 0;
 691 }
 692
 693
 694 static snd_pcm_ops_t snd_intel8x0m_playback_ops = {
 695         .open =         snd_intel8x0m_playback_open,
 696         .close =        snd_intel8x0m_playback_close,
 697         .ioctl =        snd_pcm_lib_ioctl,
 698         .hw_params =    snd_intel8x0_hw_params,
 699         .hw_free =      snd_intel8x0_hw_free,
 700         .prepare =      snd_intel8x0m_pcm_prepare,
 701         .trigger =      snd_intel8x0_pcm_trigger,
 702         .pointer =      snd_intel8x0_pcm_pointer,
 703 };
 704
 705 static snd_pcm_ops_t snd_intel8x0m_capture_ops = {
 706         .open =         snd_intel8x0m_capture_open,
 707         .close =        snd_intel8x0m_capture_close,
 708         .ioctl =        snd_pcm_lib_ioctl,
 709         .hw_params =    snd_intel8x0_hw_params,
 710         .hw_free =      snd_intel8x0_hw_free,
 711         .prepare =      snd_intel8x0m_pcm_prepare,
 712         .trigger =      snd_intel8x0_pcm_trigger,
 713         .pointer =      snd_intel8x0_pcm_pointer,
 714 };
 715
 716
 717 struct ich_pcm_table {
 718         char *suffix;
 719         snd_pcm_ops_t *playback_ops;
 720         snd_pcm_ops_t *capture_ops;
 721         size_t prealloc_size;
 722         size_t prealloc_max_size;
 723         int ac97_idx;
 724 };
 725
 726 static int __devinit snd_intel8x0_pcm1(intel8x0_t *chip, int device, struct ich_pcm_table *rec)
 727 {
 728         snd_pcm_t *pcm;
 729         int err;
 730         char name[32];
 731
 732         if (rec->suffix)
 733                 sprintf(name, "Intel ICH - %s", rec->suffix);
 734         else
 735                 strcpy(name, "Intel ICH");
 736         err = snd_pcm_new(chip->card, name, device,
 737                           rec->playback_ops ? 1 : 0,
 738                           rec->capture_ops ? 1 : 0, &pcm);
 739         if (err < 0)
 740                 return err;
 741
 742         if (rec->playback_ops)
 743                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, rec->playback_ops);
 744         if (rec->capture_ops)
 745                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, rec->capture_ops);
 746
 747         pcm->private_data = chip;
 748         pcm->info_flags = 0;
 749         if (rec->suffix)
 750                 sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
 751         else
 752                 strcpy(pcm->name, chip->card->shortname);
 753         chip->pcm[device] = pcm;
 754
 755         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 756                                               snd_dma_pci_data(chip->pci),
 757                                               rec->prealloc_size,
 758                                               rec->prealloc_max_size);
 759
 760         return 0;
 761 }
 762
 763 static struct ich_pcm_table intel_pcms[] __devinitdata = {
 764         {
 765                 .suffix = "Modem",
 766                 .playback_ops = &snd_intel8x0m_playback_ops,
 767                 .capture_ops = &snd_intel8x0m_capture_ops,
 768                 .prealloc_size = 32 * 1024,
 769                 .prealloc_max_size = 64 * 1024,
 770         },
 771 };
 772
 773 static int __devinit snd_intel8x0_pcm(intel8x0_t *chip)
 774 {
 775         int i, tblsize, device, err;
 776         struct ich_pcm_table *tbl, *rec;
 777
 778 #if 1
 779         tbl = intel_pcms;
 780         tblsize = 1;
 781 #else
 782         switch (chip->device_type) {
 783         case DEVICE_NFORCE:
 784                 tbl = nforce_pcms;
 785                 tblsize = ARRAY_SIZE(nforce_pcms);
 786                 break;
 787         case DEVICE_ALI:
 788                 tbl = ali_pcms;
 789                 tblsize = ARRAY_SIZE(ali_pcms);
 790                 break;
 791         default:
 792                 tbl = intel_pcms;
 793                 tblsize = 2;
 794                 break;
 795         }
 796 #endif
 797         device = 0;
 798         for (i = 0; i < tblsize; i++) {
 799                 rec = tbl + i;
 800                 if (i > 0 && rec->ac97_idx) {
 801                         /* activate PCM only when associated AC'97 codec */
 802                         if (! chip->ichd[rec->ac97_idx].ac97)
 803                                 continue;
 804                 }
 805                 err = snd_intel8x0_pcm1(chip, device, rec);
 806                 if (err < 0)
 807                         return err;
 808                 device++;
 809         }
 810
 811         chip->pcm_devs = device;
 812         return 0;
 813 }
 814
 815
 816 /*
 817  *  Mixer part
 818  */
 819
 820 static void snd_intel8x0_mixer_free_ac97_bus(ac97_bus_t *bus)
 821 {
 822         intel8x0_t *chip = bus->private_data;
 823         chip->ac97_bus = NULL;
 824 }
 825
 826 static void snd_intel8x0_mixer_free_ac97(ac97_t *ac97)
 827 {
 828         intel8x0_t *chip = ac97->private_data;
 829         chip->ac97 = NULL;
 830 }
 831
 832
 833 static int __devinit snd_intel8x0_mixer(intel8x0_t *chip, int ac97_clock)
 834 {
 835         ac97_bus_t *pbus;
 836         ac97_template_t ac97;
 837         ac97_t *x97;
 838         int err;
 839         unsigned int glob_sta = 0;
 840         static ac97_bus_ops_t ops = {
 841                 .write = snd_intel8x0_codec_write,
 842                 .read = snd_intel8x0_codec_read,
 843         };
 844
 845         chip->in_ac97_init = 1;
 846
 847         memset(&ac97, 0, sizeof(ac97));
 848         ac97.private_data = chip;
 849         ac97.private_free = snd_intel8x0_mixer_free_ac97;
 850         ac97.scaps = AC97_SCAP_SKIP_AUDIO;
 851
 852         glob_sta = igetdword(chip, ICHREG(GLOB_STA));
 853
 854         if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
 855                 goto __err;
 856         pbus->private_free = snd_intel8x0_mixer_free_ac97_bus;
 857         pbus->shared_type = AC97_SHARED_TYPE_ICH;       /* shared with audio driver */
 858         if (ac97_clock >= 8000 && ac97_clock <= 48000)
 859                 pbus->clock = ac97_clock;
 860         chip->ac97_bus = pbus;
 861
 862         ac97.pci = chip->pci;
 863         ac97.num = glob_sta & ICH_SCR ? 1 : 0;
 864         if ((err = snd_ac97_mixer(pbus, &ac97, &x97)) < 0) {
 865                 snd_printk(KERN_ERR "Unable to initialize codec #%d\n", ac97.num);
 866                 if (ac97.num == 0)
 867                         goto __err;
 868                 return err;
 869         }
 870         chip->ac97 = x97;
 871         if(ac97_is_modem(x97) && !chip->ichd[ICHD_MDMIN].ac97) {
 872                 chip->ichd[ICHD_MDMIN].ac97 = x97;
 873                 chip->ichd[ICHD_MDMOUT].ac97 = x97;
 874         }
 875
 876         chip->in_ac97_init = 0;
 877         return 0;
 878
 879  __err:
 880         /* clear the cold-reset bit for the next chance */
 881         if (chip->device_type != DEVICE_ALI)
 882                 iputdword(chip, ICHREG(GLOB_CNT), igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_AC97COLD);
 883         return err;
 884 }
 885
 886
 887 /*
 888  *
 889  */
 890
 891 #define do_delay(chip) do {\
 892         set_current_state(TASK_UNINTERRUPTIBLE);\
 893         schedule_timeout(1);\
 894 } while (0)
 895
 896 static int snd_intel8x0m_ich_chip_init(intel8x0_t *chip, int probing)
 897 {
 898         unsigned long end_time;
 899         unsigned int cnt, status, nstatus;
 900
 901         /* put logic to right state */
 902         /* first clear status bits */
 903         status = ICH_RCS | ICH_MIINT | ICH_MOINT;
 904         cnt = igetdword(chip, ICHREG(GLOB_STA));
 905         iputdword(chip, ICHREG(GLOB_STA), cnt & status);
 906
 907         /* ACLink on, 2 channels */
 908         cnt = igetdword(chip, ICHREG(GLOB_CNT));
 909         cnt &= ~(ICH_ACLINK);
 910         /* finish cold or do warm reset */
 911         cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM;
 912         iputdword(chip, ICHREG(GLOB_CNT), cnt);
 913         end_time = (jiffies + (HZ / 4)) + 1;
 914         do {
 915                 if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)
 916                         goto __ok;
 917                 do_delay(chip);
 918         } while (time_after_eq(end_time, jiffies));
 919         snd_printk("AC'97 warm reset still in progress? [0x%x]\n", igetdword(chip, ICHREG(GLOB_CNT)));
 920         return -EIO;
 921
 922       __ok:
 923         if (probing) {
 924                 /* wait for any codec ready status.
 925                  * Once it becomes ready it should remain ready
 926                  * as long as we do not disable the ac97 link.
 927                  */
 928                 end_time = jiffies + HZ;
 929                 do {
 930                         status = igetdword(chip, ICHREG(GLOB_STA)) & (ICH_PCR | ICH_SCR | ICH_TCR);
 931                         if (status)
 932                                 break;
 933                         do_delay(chip);
 934                 } while (time_after_eq(end_time, jiffies));
 935                 if (! status) {
 936                         /* no codec is found */
 937                         snd_printk(KERN_ERR "codec_ready: codec is not ready [0x%x]\n", igetdword(chip, ICHREG(GLOB_STA)));
 938                         return -EIO;
 939                 }
 940
 941                 /* up to two codecs (modem cannot be tertiary with ICH4) */
 942                 nstatus = ICH_PCR | ICH_SCR;
 943
 944                 /* wait for other codecs ready status. */
 945                 end_time = jiffies + HZ / 4;
 946                 while (status != nstatus && time_after_eq(end_time, jiffies)) {
 947                         do_delay(chip);
 948                         status |= igetdword(chip, ICHREG(GLOB_STA)) & nstatus;
 949                 }
 950
 951         } else {
 952                 /* resume phase */
 953                 status = 0;
 954                 if (chip->ac97)
 955                         status |= get_ich_codec_bit(chip, chip->ac97->num);
 956                 /* wait until all the probed codecs are ready */
 957                 end_time = jiffies + HZ;
 958                 do {
 959                         nstatus = igetdword(chip, ICHREG(GLOB_STA)) & (ICH_PCR | ICH_SCR | ICH_TCR);
 960                         if (status == nstatus)
 961                                 break;
 962                         do_delay(chip);
 963                 } while (time_after_eq(end_time, jiffies));
 964         }
 965
 966         if (chip->device_type == DEVICE_SIS) {
 967                 /* unmute the output on SIS7012 */
 968                 iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
 969         }
 970
 971         return 0;
 972 }
 973
 974 static int snd_intel8x0_chip_init(intel8x0_t *chip, int probing)
 975 {
 976         unsigned int i;
 977         int err;
 978
 979         if ((err = snd_intel8x0m_ich_chip_init(chip, probing)) < 0)
 980                 return err;
 981         iagetword(chip, 0);     /* clear semaphore flag */
 982
 983         /* disable interrupts */
 984         for (i = 0; i < chip->bdbars_count; i++)
 985                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
 986         /* reset channels */
 987         for (i = 0; i < chip->bdbars_count; i++)
 988                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
 989         /* initialize Buffer Descriptor Lists */
 990         for (i = 0; i < chip->bdbars_count; i++)
 991                 iputdword(chip, ICH_REG_OFF_BDBAR + chip->ichd[i].reg_offset, chip->ichd[i].bdbar_addr);
 992         return 0;
 993 }
 994
 995 static int snd_intel8x0_free(intel8x0_t *chip)
 996 {
 997         unsigned int i;
 998
 999         if (chip->irq < 0)
1000                 goto __hw_end;
1001         /* disable interrupts */
1002         for (i = 0; i < chip->bdbars_count; i++)
1003                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
1004         /* reset channels */
1005         for (i = 0; i < chip->bdbars_count; i++)
1006                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
1007         /* --- */
1008         synchronize_irq(chip->irq);
1009       __hw_end:
1010         if (chip->bdbars.area)
1011                 snd_dma_free_pages(&chip->bdbars);
1012         if (chip->remap_addr)
1013                 iounmap(chip->remap_addr);
1014         if (chip->remap_bmaddr)
1015                 iounmap(chip->remap_bmaddr);
1016         if (chip->irq >= 0)
1017                 free_irq(chip->irq, (void *)chip);
1018         pci_release_regions(chip->pci);
1019         pci_disable_device(chip->pci);
1020         kfree(chip);
1021         return 0;
1022 }
1023
1024 #ifdef CONFIG_PM
1025 /*
1026  * power management
1027  */
1028 static int intel8x0m_suspend(snd_card_t *card, pm_message_t state)
1029 {
1030         intel8x0_t *chip = card->pm_private_data;
1031         int i;
1032
1033         for (i = 0; i < chip->pcm_devs; i++)
1034                 snd_pcm_suspend_all(chip->pcm[i]);
1035         if (chip->ac97)
1036                 snd_ac97_suspend(chip->ac97);
1037         pci_disable_device(chip->pci);
1038         return 0;
1039 }
1040
1041 static int intel8x0m_resume(snd_card_t *card)
1042 {
1043         intel8x0_t *chip = card->pm_private_data;
1044         pci_enable_device(chip->pci);
1045         pci_set_master(chip->pci);
1046         snd_intel8x0_chip_init(chip, 0);
1047         if (chip->ac97)
1048                 snd_ac97_resume(chip->ac97);
1049
1050         return 0;
1051 }
1052 #endif /* CONFIG_PM */
1053
1054 static void snd_intel8x0m_proc_read(snd_info_entry_t * entry,
1055                                    snd_info_buffer_t * buffer)
1056 {
1057         intel8x0_t *chip = entry->private_data;
1058         unsigned int tmp;
1059
1060         snd_iprintf(buffer, "Intel8x0m\n\n");
1061         if (chip->device_type == DEVICE_ALI)
1062                 return;
1063         tmp = igetdword(chip, ICHREG(GLOB_STA));
1064         snd_iprintf(buffer, "Global control        : 0x%08x\n", igetdword(chip, ICHREG(GLOB_CNT)));
1065         snd_iprintf(buffer, "Global status         : 0x%08x\n", tmp);
1066         snd_iprintf(buffer, "AC'97 codecs ready    :%s%s%s%s\n",
1067                         tmp & ICH_PCR ? " primary" : "",
1068                         tmp & ICH_SCR ? " secondary" : "",
1069                         tmp & ICH_TCR ? " tertiary" : "",
1070                         (tmp & (ICH_PCR | ICH_SCR | ICH_TCR)) == 0 ? " none" : "");
1071 }
1072
1073 static void __devinit snd_intel8x0m_proc_init(intel8x0_t * chip)
1074 {
1075         snd_info_entry_t *entry;
1076
1077         if (! snd_card_proc_new(chip->card, "intel8x0m", &entry))
1078                 snd_info_set_text_ops(entry, chip, 1024, snd_intel8x0m_proc_read);
1079 }
1080
1081 static int snd_intel8x0_dev_free(snd_device_t *device)
1082 {
1083         intel8x0_t *chip = device->device_data;
1084         return snd_intel8x0_free(chip);
1085 }
1086
1087 struct ich_reg_info {
1088         unsigned int int_sta_mask;
1089         unsigned int offset;
1090 };
1091
1092 static int __devinit snd_intel8x0m_create(snd_card_t * card,
1093                                          struct pci_dev *pci,
1094                                          unsigned long device_type,
1095                                          intel8x0_t ** r_intel8x0)
1096 {
1097         intel8x0_t *chip;
1098         int err;
1099         unsigned int i;
1100         unsigned int int_sta_masks;
1101         ichdev_t *ichdev;
1102         static snd_device_ops_t ops = {
1103                 .dev_free =     snd_intel8x0_dev_free,
1104         };
1105         static struct ich_reg_info intel_regs[2] = {
1106                 { ICH_MIINT, 0 },
1107                 { ICH_MOINT, 0x10 },
1108         };
1109         struct ich_reg_info *tbl;
1110
1111         *r_intel8x0 = NULL;
1112
1113         if ((err = pci_enable_device(pci)) < 0)
1114                 return err;
1115
1116         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1117         if (chip == NULL) {
1118                 pci_disable_device(pci);
1119                 return -ENOMEM;
1120         }
1121         spin_lock_init(&chip->reg_lock);
1122         chip->device_type = device_type;
1123         chip->card = card;
1124         chip->pci = pci;
1125         chip->irq = -1;
1126
1127         if ((err = pci_request_regions(pci, card->shortname)) < 0) {
1128                 kfree(chip);
1129                 pci_disable_device(pci);
1130                 return err;
1131         }
1132
1133         if (device_type == DEVICE_ALI) {
1134                 /* ALI5455 has no ac97 region */
1135                 chip->bmaddr = pci_resource_start(pci, 0);
1136                 goto port_inited;
1137         }
1138
1139         if (pci_resource_flags(pci, 2) & IORESOURCE_MEM) {      /* ICH4 and Nforce */
1140                 chip->mmio = 1;
1141                 chip->addr = pci_resource_start(pci, 2);
1142                 chip->remap_addr = ioremap_nocache(chip->addr,
1143                                                    pci_resource_len(pci, 2));
1144                 if (chip->remap_addr == NULL) {
1145                         snd_printk("AC'97 space ioremap problem\n");
1146                         snd_intel8x0_free(chip);
1147                         return -EIO;
1148                 }
1149         } else {
1150                 chip->addr = pci_resource_start(pci, 0);
1151         }
1152         if (pci_resource_flags(pci, 3) & IORESOURCE_MEM) {      /* ICH4 */
1153                 chip->bm_mmio = 1;
1154                 chip->bmaddr = pci_resource_start(pci, 3);
1155                 chip->remap_bmaddr = ioremap_nocache(chip->bmaddr,
1156                                                      pci_resource_len(pci, 3));
1157                 if (chip->remap_bmaddr == NULL) {
1158                         snd_printk("Controller space ioremap problem\n");
1159                         snd_intel8x0_free(chip);
1160                         return -EIO;
1161                 }
1162         } else {
1163                 chip->bmaddr = pci_resource_start(pci, 1);
1164         }
1165
1166  port_inited:
1167         if (request_irq(pci->irq, snd_intel8x0_interrupt, SA_INTERRUPT|SA_SHIRQ, card->shortname, (void *)chip)) {
1168                 snd_printk("unable to grab IRQ %d\n", pci->irq);
1169                 snd_intel8x0_free(chip);
1170                 return -EBUSY;
1171         }
1172         chip->irq = pci->irq;
1173         pci_set_master(pci);
1174         synchronize_irq(chip->irq);
1175
1176         /* initialize offsets */
1177         chip->bdbars_count = 2;
1178         tbl = intel_regs;
1179
1180         for (i = 0; i < chip->bdbars_count; i++) {
1181                 ichdev = &chip->ichd[i];
1182                 ichdev->ichd = i;
1183                 ichdev->reg_offset = tbl[i].offset;
1184                 ichdev->int_sta_mask = tbl[i].int_sta_mask;
1185                 if (device_type == DEVICE_SIS) {
1186                         /* SiS 7013 swaps the registers */
1187                         ichdev->roff_sr = ICH_REG_OFF_PICB;
1188                         ichdev->roff_picb = ICH_REG_OFF_SR;
1189                 } else {
1190                         ichdev->roff_sr = ICH_REG_OFF_SR;
1191                         ichdev->roff_picb = ICH_REG_OFF_PICB;
1192                 }
1193                 if (device_type == DEVICE_ALI)
1194                         ichdev->ali_slot = (ichdev->reg_offset - 0x40) / 0x10;
1195         }
1196         /* SIS7013 handles the pcm data in bytes, others are in words */
1197         chip->pcm_pos_shift = (device_type == DEVICE_SIS) ? 0 : 1;
1198
1199         /* allocate buffer descriptor lists */
1200         /* the start of each lists must be aligned to 8 bytes */
1201         if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1202                                 chip->bdbars_count * sizeof(u32) * ICH_MAX_FRAGS * 2,
1203                                 &chip->bdbars) < 0) {
1204                 snd_intel8x0_free(chip);
1205                 return -ENOMEM;
1206         }
1207         /* tables must be aligned to 8 bytes here, but the kernel pages
1208            are much bigger, so we don't care (on i386) */
1209         int_sta_masks = 0;
1210         for (i = 0; i < chip->bdbars_count; i++) {
1211                 ichdev = &chip->ichd[i];
1212                 ichdev->bdbar = ((u32 *)chip->bdbars.area) + (i * ICH_MAX_FRAGS * 2);
1213                 ichdev->bdbar_addr = chip->bdbars.addr + (i * sizeof(u32) * ICH_MAX_FRAGS * 2);
1214                 int_sta_masks |= ichdev->int_sta_mask;
1215         }
1216         chip->int_sta_reg = ICH_REG_GLOB_STA;
1217         chip->int_sta_mask = int_sta_masks;
1218
1219         if ((err = snd_intel8x0_chip_init(chip, 1)) < 0) {
1220                 snd_intel8x0_free(chip);
1221                 return err;
1222         }
1223
1224         snd_card_set_pm_callback(card, intel8x0m_suspend, intel8x0m_resume, chip);
1225
1226         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1227                 snd_intel8x0_free(chip);
1228                 return err;
1229         }
1230
1231         snd_card_set_dev(card, &pci->dev);
1232
1233         *r_intel8x0 = chip;
1234         return 0;
1235 }
1236
1237 static struct shortname_table {
1238         unsigned int id;
1239         const char *s;
1240 } shortnames[] __devinitdata = {
1241         { PCI_DEVICE_ID_INTEL_82801AA_6, "Intel 82801AA-ICH" },
1242         { PCI_DEVICE_ID_INTEL_82801AB_6, "Intel 82901AB-ICH0" },
1243         { PCI_DEVICE_ID_INTEL_82801BA_6, "Intel 82801BA-ICH2" },
1244         { PCI_DEVICE_ID_INTEL_440MX_6, "Intel 440MX" },
1245         { PCI_DEVICE_ID_INTEL_82801CA_6, "Intel 82801CA-ICH3" },
1246         { PCI_DEVICE_ID_INTEL_82801DB_6, "Intel 82801DB-ICH4" },
1247         { PCI_DEVICE_ID_INTEL_82801EB_6, "Intel ICH5" },
1248         { PCI_DEVICE_ID_INTEL_ICH6_17, "Intel ICH6" },
1249         { PCI_DEVICE_ID_INTEL_ICH7_19, "Intel ICH7" },
1250         { 0x7446, "AMD AMD768" },
1251         { PCI_DEVICE_ID_SI_7013, "SiS SI7013" },
1252         { PCI_DEVICE_ID_NVIDIA_MCP1_MODEM, "NVidia nForce" },
1253         { PCI_DEVICE_ID_NVIDIA_MCP2_MODEM, "NVidia nForce2" },
1254         { PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM, "NVidia nForce2s" },
1255         { PCI_DEVICE_ID_NVIDIA_MCP3_MODEM, "NVidia nForce3" },
1256 #if 0
1257         { 0x5455, "ALi M5455" },
1258         { 0x746d, "AMD AMD8111" },
1259 #endif
1260         { 0 },
1261 };
1262
1263 static int __devinit snd_intel8x0m_probe(struct pci_dev *pci,
1264                                         const struct pci_device_id *pci_id)
1265 {
1266         static int dev;
1267         snd_card_t *card;
1268         intel8x0_t *chip;
1269         int err;
1270         struct shortname_table *name;
1271
1272         if (dev >= SNDRV_CARDS)
1273                 return -ENODEV;
1274         if (!enable[dev]) {
1275                 dev++;
1276                 return -ENOENT;
1277         }
1278
1279         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1280         if (card == NULL)
1281                 return -ENOMEM;
1282
1283         strcpy(card->driver, "ICH-MODEM");
1284         strcpy(card->shortname, "Intel ICH");
1285         for (name = shortnames; name->id; name++) {
1286                 if (pci->device == name->id) {
1287                         strcpy(card->shortname, name->s);
1288                         break;
1289                 }
1290         }
1291         strcat(card->shortname," Modem");
1292
1293         if ((err = snd_intel8x0m_create(card, pci, pci_id->driver_data, &chip)) < 0) {
1294                 snd_card_free(card);
1295                 return err;
1296         }
1297
1298         if ((err = snd_intel8x0_mixer(chip, ac97_clock[dev])) < 0) {
1299                 snd_card_free(card);
1300                 return err;
1301         }
1302         if ((err = snd_intel8x0_pcm(chip)) < 0) {
1303                 snd_card_free(card);
1304                 return err;
1305         }
1306
1307         snd_intel8x0m_proc_init(chip);
1308
1309         sprintf(card->longname, "%s at 0x%lx, irq %i",
1310                 card->shortname, chip->addr, chip->irq);
1311
1312         if ((err = snd_card_register(card)) < 0) {
1313                 snd_card_free(card);
1314                 return err;
1315         }
1316         pci_set_drvdata(pci, card);
1317         dev++;
1318         return 0;
1319 }
1320
1321 static void __devexit snd_intel8x0m_remove(struct pci_dev *pci)
1322 {
1323         snd_card_free(pci_get_drvdata(pci));
1324         pci_set_drvdata(pci, NULL);
1325 }
1326
1327 static struct pci_driver driver = {
1328         .name = "Intel ICH Modem",
1329         .owner = THIS_MODULE,
1330         .id_table = snd_intel8x0m_ids,
1331         .probe = snd_intel8x0m_probe,
1332         .remove = __devexit_p(snd_intel8x0m_remove),
1333         SND_PCI_PM_CALLBACKS
1334 };
1335
1336
1337 static int __init alsa_card_intel8x0m_init(void)
1338 {
1339         return pci_register_driver(&driver);
1340 }
1341
1342 static void __exit alsa_card_intel8x0m_exit(void)
1343 {
1344         pci_unregister_driver(&driver);
1345 }
1346
1347 module_init(alsa_card_intel8x0m_init)
1348 module_exit(alsa_card_intel8x0m_exit)