linux/sound/pci/intel8x0m.c
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   1/*
   2 *   ALSA modem driver for Intel ICH (i8x0) chipsets
   3 *
   4 *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   5 *
   6 *   This is modified (by Sasha Khapyorsky <sashak@alsa-project.org>) version
   7 *   of ALSA ICH sound driver intel8x0.c .
   8 *
   9 *
  10 *   This program is free software; you can redistribute it and/or modify
  11 *   it under the terms of the GNU General Public License as published by
  12 *   the Free Software Foundation; either version 2 of the License, or
  13 *   (at your option) any later version.
  14 *
  15 *   This program is distributed in the hope that it will be useful,
  16 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 *   GNU General Public License for more details.
  19 *
  20 *   You should have received a copy of the GNU General Public License
  21 *   along with this program; if not, write to the Free Software
  22 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  23 *
  24 */      
  25
  26#include <asm/io.h>
  27#include <linux/delay.h>
  28#include <linux/interrupt.h>
  29#include <linux/init.h>
  30#include <linux/pci.h>
  31#include <linux/slab.h>
  32#include <linux/moduleparam.h>
  33#include <sound/core.h>
  34#include <sound/pcm.h>
  35#include <sound/ac97_codec.h>
  36#include <sound/info.h>
  37#include <sound/initval.h>
  38
  39MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  40MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; "
  41                   "SiS 7013; NVidia MCP/2/2S/3 modems");
  42MODULE_LICENSE("GPL");
  43MODULE_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
  59static int index = -2; /* Exclude the first card */
  60static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  61static int ac97_clock;
  62
  63module_param(index, int, 0444);
  64MODULE_PARM_DESC(index, "Index value for Intel i8x0 modemcard.");
  65module_param(id, charp, 0444);
  66MODULE_PARM_DESC(id, "ID string for Intel i8x0 modemcard.");
  67module_param(ac97_clock, int, 0444);
  68MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = auto-detect).");
  69
  70/* just for backward compatibility */
  71static int enable;
  72module_param(enable, bool, 0444);
  73
  74/*
  75 *  Direct registers
  76 */
  77enum { DEVICE_INTEL, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
  78
  79#define ICHREG(x) ICH_REG_##x
  80
  81#define DEFINE_REGSET(name,base) \
  82enum { \
  83        ICH_REG_##name##_BDBAR  = base + 0x0,   /* dword - buffer descriptor list base address */ \
  84        ICH_REG_##name##_CIV    = base + 0x04,  /* byte - current index value */ \
  85        ICH_REG_##name##_LVI    = base + 0x05,  /* byte - last valid index */ \
  86        ICH_REG_##name##_SR     = base + 0x06,  /* byte - status register */ \
  87        ICH_REG_##name##_PICB   = base + 0x08,  /* word - position in current buffer */ \
  88        ICH_REG_##name##_PIV    = base + 0x0a,  /* byte - prefetched index value */ \
  89        ICH_REG_##name##_CR     = base + 0x0b,  /* byte - control register */ \
  90};
  91
  92/* busmaster blocks */
  93DEFINE_REGSET(OFF, 0);          /* offset */
  94
  95/* values for each busmaster block */
  96
  97/* LVI */
  98#define ICH_REG_LVI_MASK                0x1f
  99
 100/* SR */
 101#define ICH_FIFOE                       0x10    /* FIFO error */
 102#define ICH_BCIS                        0x08    /* buffer completion interrupt status */
 103#define ICH_LVBCI                       0x04    /* last valid buffer completion interrupt */
 104#define ICH_CELV                        0x02    /* current equals last valid */
 105#define ICH_DCH                         0x01    /* DMA controller halted */
 106
 107/* PIV */
 108#define ICH_REG_PIV_MASK                0x1f    /* mask */
 109
 110/* CR */
 111#define ICH_IOCE                        0x10    /* interrupt on completion enable */
 112#define ICH_FEIE                        0x08    /* fifo error interrupt enable */
 113#define ICH_LVBIE                       0x04    /* last valid buffer interrupt enable */
 114#define ICH_RESETREGS                   0x02    /* reset busmaster registers */
 115#define ICH_STARTBM                     0x01    /* start busmaster operation */
 116
 117
 118/* global block */
 119#define ICH_REG_GLOB_CNT                0x3c    /* dword - global control */
 120#define   ICH_TRIE              0x00000040      /* tertiary resume interrupt enable */
 121#define   ICH_SRIE              0x00000020      /* secondary resume interrupt enable */
 122#define   ICH_PRIE              0x00000010      /* primary resume interrupt enable */
 123#define   ICH_ACLINK            0x00000008      /* AClink shut off */
 124#define   ICH_AC97WARM          0x00000004      /* AC'97 warm reset */
 125#define   ICH_AC97COLD          0x00000002      /* AC'97 cold reset */
 126#define   ICH_GIE               0x00000001      /* GPI interrupt enable */
 127#define ICH_REG_GLOB_STA                0x40    /* dword - global status */
 128#define   ICH_TRI               0x20000000      /* ICH4: tertiary (AC_SDIN2) resume interrupt */
 129#define   ICH_TCR               0x10000000      /* ICH4: tertiary (AC_SDIN2) codec ready */
 130#define   ICH_BCS               0x08000000      /* ICH4: bit clock stopped */
 131#define   ICH_SPINT             0x04000000      /* ICH4: S/PDIF interrupt */
 132#define   ICH_P2INT             0x02000000      /* ICH4: PCM2-In interrupt */
 133#define   ICH_M2INT             0x01000000      /* ICH4: Mic2-In interrupt */
 134#define   ICH_SAMPLE_CAP        0x00c00000      /* ICH4: sample capability bits (RO) */
 135#define   ICH_MULTICHAN_CAP     0x00300000      /* ICH4: multi-channel capability bits (RO) */
 136#define   ICH_MD3               0x00020000      /* modem power down semaphore */
 137#define   ICH_AD3               0x00010000      /* audio power down semaphore */
 138#define   ICH_RCS               0x00008000      /* read completion status */
 139#define   ICH_BIT3              0x00004000      /* bit 3 slot 12 */
 140#define   ICH_BIT2              0x00002000      /* bit 2 slot 12 */
 141#define   ICH_BIT1              0x00001000      /* bit 1 slot 12 */
 142#define   ICH_SRI               0x00000800      /* secondary (AC_SDIN1) resume interrupt */
 143#define   ICH_PRI               0x00000400      /* primary (AC_SDIN0) resume interrupt */
 144#define   ICH_SCR               0x00000200      /* secondary (AC_SDIN1) codec ready */
 145#define   ICH_PCR               0x00000100      /* primary (AC_SDIN0) codec ready */
 146#define   ICH_MCINT             0x00000080      /* MIC capture interrupt */
 147#define   ICH_POINT             0x00000040      /* playback interrupt */
 148#define   ICH_PIINT             0x00000020      /* capture interrupt */
 149#define   ICH_NVSPINT           0x00000010      /* nforce spdif interrupt */
 150#define   ICH_MOINT             0x00000004      /* modem playback interrupt */
 151#define   ICH_MIINT             0x00000002      /* modem capture interrupt */
 152#define   ICH_GSCI              0x00000001      /* GPI status change interrupt */
 153#define ICH_REG_ACC_SEMA                0x44    /* byte - codec write semaphore */
 154#define   ICH_CAS               0x01            /* codec access semaphore */
 155
 156#define ICH_MAX_FRAGS           32              /* max hw frags */
 157
 158
 159/*
 160 *  
 161 */
 162
 163enum { ICHD_MDMIN, ICHD_MDMOUT, ICHD_MDMLAST = ICHD_MDMOUT };
 164enum { ALID_MDMIN, ALID_MDMOUT, ALID_MDMLAST = ALID_MDMOUT };
 165
 166#define get_ichdev(substream) (substream->runtime->private_data)
 167
 168struct ichdev {
 169        unsigned int ichd;                      /* ich device number */
 170        unsigned long reg_offset;               /* offset to bmaddr */
 171        u32 *bdbar;                             /* CPU address (32bit) */
 172        unsigned int bdbar_addr;                /* PCI bus address (32bit) */
 173        struct snd_pcm_substream *substream;
 174        unsigned int physbuf;                   /* physical address (32bit) */
 175        unsigned int size;
 176        unsigned int fragsize;
 177        unsigned int fragsize1;
 178        unsigned int position;
 179        int frags;
 180        int lvi;
 181        int lvi_frag;
 182        int civ;
 183        int ack;
 184        int ack_reload;
 185        unsigned int ack_bit;
 186        unsigned int roff_sr;
 187        unsigned int roff_picb;
 188        unsigned int int_sta_mask;              /* interrupt status mask */
 189        unsigned int ali_slot;                  /* ALI DMA slot */
 190        struct snd_ac97 *ac97;
 191};
 192
 193struct intel8x0m {
 194        unsigned int device_type;
 195
 196        int irq;
 197
 198        void __iomem *addr;
 199        void __iomem *bmaddr;
 200
 201        struct pci_dev *pci;
 202        struct snd_card *card;
 203
 204        int pcm_devs;
 205        struct snd_pcm *pcm[2];
 206        struct ichdev ichd[2];
 207
 208        unsigned int in_ac97_init: 1;
 209
 210        struct snd_ac97_bus *ac97_bus;
 211        struct snd_ac97 *ac97;
 212
 213        spinlock_t reg_lock;
 214        
 215        struct snd_dma_buffer bdbars;
 216        u32 bdbars_count;
 217        u32 int_sta_reg;                /* interrupt status register */
 218        u32 int_sta_mask;               /* interrupt status mask */
 219        unsigned int pcm_pos_shift;
 220};
 221
 222static DEFINE_PCI_DEVICE_TABLE(snd_intel8x0m_ids) = {
 223        { PCI_VDEVICE(INTEL, 0x2416), DEVICE_INTEL },   /* 82801AA */
 224        { PCI_VDEVICE(INTEL, 0x2426), DEVICE_INTEL },   /* 82901AB */
 225        { PCI_VDEVICE(INTEL, 0x2446), DEVICE_INTEL },   /* 82801BA */
 226        { PCI_VDEVICE(INTEL, 0x2486), DEVICE_INTEL },   /* ICH3 */
 227        { PCI_VDEVICE(INTEL, 0x24c6), DEVICE_INTEL }, /* ICH4 */
 228        { PCI_VDEVICE(INTEL, 0x24d6), DEVICE_INTEL }, /* ICH5 */
 229        { PCI_VDEVICE(INTEL, 0x266d), DEVICE_INTEL },   /* ICH6 */
 230        { PCI_VDEVICE(INTEL, 0x27dd), DEVICE_INTEL },   /* ICH7 */
 231        { PCI_VDEVICE(INTEL, 0x7196), DEVICE_INTEL },   /* 440MX */
 232        { PCI_VDEVICE(AMD, 0x7446), DEVICE_INTEL },     /* AMD768 */
 233        { PCI_VDEVICE(SI, 0x7013), DEVICE_SIS },        /* SI7013 */
 234        { PCI_VDEVICE(NVIDIA, 0x01c1), DEVICE_NFORCE }, /* NFORCE */
 235        { PCI_VDEVICE(NVIDIA, 0x0069), DEVICE_NFORCE }, /* NFORCE2 */
 236        { PCI_VDEVICE(NVIDIA, 0x0089), DEVICE_NFORCE }, /* NFORCE2s */
 237        { PCI_VDEVICE(NVIDIA, 0x00d9), DEVICE_NFORCE }, /* NFORCE3 */
 238#if 0
 239        { PCI_VDEVICE(AMD, 0x746d), DEVICE_INTEL },     /* AMD8111 */
 240        { PCI_VDEVICE(AL, 0x5455), DEVICE_ALI },   /* Ali5455 */
 241#endif
 242        { 0, }
 243};
 244
 245MODULE_DEVICE_TABLE(pci, snd_intel8x0m_ids);
 246
 247/*
 248 *  Lowlevel I/O - busmaster
 249 */
 250
 251static inline u8 igetbyte(struct intel8x0m *chip, u32 offset)
 252{
 253        return ioread8(chip->bmaddr + offset);
 254}
 255
 256static inline u16 igetword(struct intel8x0m *chip, u32 offset)
 257{
 258        return ioread16(chip->bmaddr + offset);
 259}
 260
 261static inline u32 igetdword(struct intel8x0m *chip, u32 offset)
 262{
 263        return ioread32(chip->bmaddr + offset);
 264}
 265
 266static inline void iputbyte(struct intel8x0m *chip, u32 offset, u8 val)
 267{
 268        iowrite8(val, chip->bmaddr + offset);
 269}
 270
 271static inline void iputword(struct intel8x0m *chip, u32 offset, u16 val)
 272{
 273        iowrite16(val, chip->bmaddr + offset);
 274}
 275
 276static inline void iputdword(struct intel8x0m *chip, u32 offset, u32 val)
 277{
 278        iowrite32(val, chip->bmaddr + offset);
 279}
 280
 281/*
 282 *  Lowlevel I/O - AC'97 registers
 283 */
 284
 285static inline u16 iagetword(struct intel8x0m *chip, u32 offset)
 286{
 287        return ioread16(chip->addr + offset);
 288}
 289
 290static inline void iaputword(struct intel8x0m *chip, u32 offset, u16 val)
 291{
 292        iowrite16(val, chip->addr + offset);
 293}
 294
 295/*
 296 *  Basic I/O
 297 */
 298
 299/*
 300 * access to AC97 codec via normal i/o (for ICH and SIS7013)
 301 */
 302
 303/* return the GLOB_STA bit for the corresponding codec */
 304static unsigned int get_ich_codec_bit(struct intel8x0m *chip, unsigned int codec)
 305{
 306        static unsigned int codec_bit[3] = {
 307                ICH_PCR, ICH_SCR, ICH_TCR
 308        };
 309        if (snd_BUG_ON(codec >= 3))
 310                return ICH_PCR;
 311        return codec_bit[codec];
 312}
 313
 314static int snd_intel8x0m_codec_semaphore(struct intel8x0m *chip, unsigned int codec)
 315{
 316        int time;
 317        
 318        if (codec > 1)
 319                return -EIO;
 320        codec = get_ich_codec_bit(chip, codec);
 321
 322        /* codec ready ? */
 323        if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
 324                return -EIO;
 325
 326        /* Anyone holding a semaphore for 1 msec should be shot... */
 327        time = 100;
 328        do {
 329                if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
 330                        return 0;
 331                udelay(10);
 332        } while (time--);
 333
 334        /* access to some forbidden (non existent) ac97 registers will not
 335         * reset the semaphore. So even if you don't get the semaphore, still
 336         * continue the access. We don't need the semaphore anyway. */
 337        snd_printk(KERN_ERR "codec_semaphore: semaphore is not ready [0x%x][0x%x]\n",
 338                        igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
 339        iagetword(chip, 0);     /* clear semaphore flag */
 340        /* I don't care about the semaphore */
 341        return -EBUSY;
 342}
 343 
 344static void snd_intel8x0m_codec_write(struct snd_ac97 *ac97,
 345                                      unsigned short reg,
 346                                      unsigned short val)
 347{
 348        struct intel8x0m *chip = ac97->private_data;
 349        
 350        if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
 351                if (! chip->in_ac97_init)
 352                        snd_printk(KERN_ERR "codec_write %d: semaphore is not ready for register 0x%x\n", ac97->num, reg);
 353        }
 354        iaputword(chip, reg + ac97->num * 0x80, val);
 355}
 356
 357static unsigned short snd_intel8x0m_codec_read(struct snd_ac97 *ac97,
 358                                               unsigned short reg)
 359{
 360        struct intel8x0m *chip = ac97->private_data;
 361        unsigned short res;
 362        unsigned int tmp;
 363
 364        if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
 365                if (! chip->in_ac97_init)
 366                        snd_printk(KERN_ERR "codec_read %d: semaphore is not ready for register 0x%x\n", ac97->num, reg);
 367                res = 0xffff;
 368        } else {
 369                res = iagetword(chip, reg + ac97->num * 0x80);
 370                if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
 371                        /* reset RCS and preserve other R/WC bits */
 372                        iputdword(chip, ICHREG(GLOB_STA),
 373                                  tmp & ~(ICH_SRI|ICH_PRI|ICH_TRI|ICH_GSCI));
 374                        if (! chip->in_ac97_init)
 375                                snd_printk(KERN_ERR "codec_read %d: read timeout for register 0x%x\n", ac97->num, reg);
 376                        res = 0xffff;
 377                }
 378        }
 379        if (reg == AC97_GPIO_STATUS)
 380                iagetword(chip, 0); /* clear semaphore */
 381        return res;
 382}
 383
 384
 385/*
 386 * DMA I/O
 387 */
 388static void snd_intel8x0m_setup_periods(struct intel8x0m *chip, struct ichdev *ichdev)
 389{
 390        int idx;
 391        u32 *bdbar = ichdev->bdbar;
 392        unsigned long port = ichdev->reg_offset;
 393
 394        iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
 395        if (ichdev->size == ichdev->fragsize) {
 396                ichdev->ack_reload = ichdev->ack = 2;
 397                ichdev->fragsize1 = ichdev->fragsize >> 1;
 398                for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
 399                        bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
 400                        bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 401                                                     ichdev->fragsize1 >> chip->pcm_pos_shift);
 402                        bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
 403                        bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 404                                                     ichdev->fragsize1 >> chip->pcm_pos_shift);
 405                }
 406                ichdev->frags = 2;
 407        } else {
 408                ichdev->ack_reload = ichdev->ack = 1;
 409                ichdev->fragsize1 = ichdev->fragsize;
 410                for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {
 411                        bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf + (((idx >> 1) * ichdev->fragsize) % ichdev->size));
 412                        bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 413                                                     ichdev->fragsize >> chip->pcm_pos_shift);
 414                        /*
 415                        printk(KERN_DEBUG "bdbar[%i] = 0x%x [0x%x]\n",
 416                               idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
 417                        */
 418                }
 419                ichdev->frags = ichdev->size / ichdev->fragsize;
 420        }
 421        iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
 422        ichdev->civ = 0;
 423        iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
 424        ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
 425        ichdev->position = 0;
 426#if 0
 427        printk(KERN_DEBUG "lvi_frag = %i, frags = %i, period_size = 0x%x, "
 428               "period_size1 = 0x%x\n",
 429               ichdev->lvi_frag, ichdev->frags, ichdev->fragsize,
 430               ichdev->fragsize1);
 431#endif
 432        /* clear interrupts */
 433        iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
 434}
 435
 436/*
 437 *  Interrupt handler
 438 */
 439
 440static inline void snd_intel8x0m_update(struct intel8x0m *chip, struct ichdev *ichdev)
 441{
 442        unsigned long port = ichdev->reg_offset;
 443        int civ, i, step;
 444        int ack = 0;
 445
 446        civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
 447        if (civ == ichdev->civ) {
 448                // snd_printd("civ same %d\n", civ);
 449                step = 1;
 450                ichdev->civ++;
 451                ichdev->civ &= ICH_REG_LVI_MASK;
 452        } else {
 453                step = civ - ichdev->civ;
 454                if (step < 0)
 455                        step += ICH_REG_LVI_MASK + 1;
 456                // if (step != 1)
 457                //      snd_printd("step = %d, %d -> %d\n", step, ichdev->civ, civ);
 458                ichdev->civ = civ;
 459        }
 460
 461        ichdev->position += step * ichdev->fragsize1;
 462        ichdev->position %= ichdev->size;
 463        ichdev->lvi += step;
 464        ichdev->lvi &= ICH_REG_LVI_MASK;
 465        iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
 466        for (i = 0; i < step; i++) {
 467                ichdev->lvi_frag++;
 468                ichdev->lvi_frag %= ichdev->frags;
 469                ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf +
 470                                                             ichdev->lvi_frag *
 471                                                             ichdev->fragsize1);
 472#if 0
 473                printk(KERN_DEBUG "new: bdbar[%i] = 0x%x [0x%x], "
 474                       "prefetch = %i, all = 0x%x, 0x%x\n",
 475                       ichdev->lvi * 2, ichdev->bdbar[ichdev->lvi * 2],
 476                       ichdev->bdbar[ichdev->lvi * 2 + 1], inb(ICH_REG_OFF_PIV + port),
 477                       inl(port + 4), inb(port + ICH_REG_OFF_CR));
 478#endif
 479                if (--ichdev->ack == 0) {
 480                        ichdev->ack = ichdev->ack_reload;
 481                        ack = 1;
 482                }
 483        }
 484        if (ack && ichdev->substream) {
 485                spin_unlock(&chip->reg_lock);
 486                snd_pcm_period_elapsed(ichdev->substream);
 487                spin_lock(&chip->reg_lock);
 488        }
 489        iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
 490}
 491
 492static irqreturn_t snd_intel8x0m_interrupt(int irq, void *dev_id)
 493{
 494        struct intel8x0m *chip = dev_id;
 495        struct ichdev *ichdev;
 496        unsigned int status;
 497        unsigned int i;
 498
 499        spin_lock(&chip->reg_lock);
 500        status = igetdword(chip, chip->int_sta_reg);
 501        if (status == 0xffffffff) { /* we are not yet resumed */
 502                spin_unlock(&chip->reg_lock);
 503                return IRQ_NONE;
 504        }
 505        if ((status & chip->int_sta_mask) == 0) {
 506                if (status)
 507                        iputdword(chip, chip->int_sta_reg, status);
 508                spin_unlock(&chip->reg_lock);
 509                return IRQ_NONE;
 510        }
 511
 512        for (i = 0; i < chip->bdbars_count; i++) {
 513                ichdev = &chip->ichd[i];
 514                if (status & ichdev->int_sta_mask)
 515                        snd_intel8x0m_update(chip, ichdev);
 516        }
 517
 518        /* ack them */
 519        iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
 520        spin_unlock(&chip->reg_lock);
 521        
 522        return IRQ_HANDLED;
 523}
 524
 525/*
 526 *  PCM part
 527 */
 528
 529static int snd_intel8x0m_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 530{
 531        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 532        struct ichdev *ichdev = get_ichdev(substream);
 533        unsigned char val = 0;
 534        unsigned long port = ichdev->reg_offset;
 535
 536        switch (cmd) {
 537        case SNDRV_PCM_TRIGGER_START:
 538        case SNDRV_PCM_TRIGGER_RESUME:
 539                val = ICH_IOCE | ICH_STARTBM;
 540                break;
 541        case SNDRV_PCM_TRIGGER_STOP:
 542        case SNDRV_PCM_TRIGGER_SUSPEND:
 543                val = 0;
 544                break;
 545        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 546                val = ICH_IOCE;
 547                break;
 548        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 549                val = ICH_IOCE | ICH_STARTBM;
 550                break;
 551        default:
 552                return -EINVAL;
 553        }
 554        iputbyte(chip, port + ICH_REG_OFF_CR, val);
 555        if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 556                /* wait until DMA stopped */
 557                while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
 558                /* reset whole DMA things */
 559                iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
 560        }
 561        return 0;
 562}
 563
 564static int snd_intel8x0m_hw_params(struct snd_pcm_substream *substream,
 565                                  struct snd_pcm_hw_params *hw_params)
 566{
 567        return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 568}
 569
 570static int snd_intel8x0m_hw_free(struct snd_pcm_substream *substream)
 571{
 572        return snd_pcm_lib_free_pages(substream);
 573}
 574
 575static snd_pcm_uframes_t snd_intel8x0m_pcm_pointer(struct snd_pcm_substream *substream)
 576{
 577        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 578        struct ichdev *ichdev = get_ichdev(substream);
 579        size_t ptr1, ptr;
 580
 581        ptr1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb) << chip->pcm_pos_shift;
 582        if (ptr1 != 0)
 583                ptr = ichdev->fragsize1 - ptr1;
 584        else
 585                ptr = 0;
 586        ptr += ichdev->position;
 587        if (ptr >= ichdev->size)
 588                return 0;
 589        return bytes_to_frames(substream->runtime, ptr);
 590}
 591
 592static int snd_intel8x0m_pcm_prepare(struct snd_pcm_substream *substream)
 593{
 594        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 595        struct snd_pcm_runtime *runtime = substream->runtime;
 596        struct ichdev *ichdev = get_ichdev(substream);
 597
 598        ichdev->physbuf = runtime->dma_addr;
 599        ichdev->size = snd_pcm_lib_buffer_bytes(substream);
 600        ichdev->fragsize = snd_pcm_lib_period_bytes(substream);
 601        snd_ac97_write(ichdev->ac97, AC97_LINE1_RATE, runtime->rate);
 602        snd_ac97_write(ichdev->ac97, AC97_LINE1_LEVEL, 0);
 603        snd_intel8x0m_setup_periods(chip, ichdev);
 604        return 0;
 605}
 606
 607static struct snd_pcm_hardware snd_intel8x0m_stream =
 608{
 609        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 610                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 611                                 SNDRV_PCM_INFO_MMAP_VALID |
 612                                 SNDRV_PCM_INFO_PAUSE |
 613                                 SNDRV_PCM_INFO_RESUME),
 614        .formats =              SNDRV_PCM_FMTBIT_S16_LE,
 615        .rates =                SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
 616        .rate_min =             8000,
 617        .rate_max =             16000,
 618        .channels_min =         1,
 619        .channels_max =         1,
 620        .buffer_bytes_max =     64 * 1024,
 621        .period_bytes_min =     32,
 622        .period_bytes_max =     64 * 1024,
 623        .periods_min =          1,
 624        .periods_max =          1024,
 625        .fifo_size =            0,
 626};
 627
 628
 629static int snd_intel8x0m_pcm_open(struct snd_pcm_substream *substream, struct ichdev *ichdev)
 630{
 631        static unsigned int rates[] = { 8000,  9600, 12000, 16000 };
 632        static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
 633                .count = ARRAY_SIZE(rates),
 634                .list = rates,
 635                .mask = 0,
 636        };
 637        struct snd_pcm_runtime *runtime = substream->runtime;
 638        int err;
 639
 640        ichdev->substream = substream;
 641        runtime->hw = snd_intel8x0m_stream;
 642        err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 643                                         &hw_constraints_rates);
 644        if ( err < 0 )
 645                return err;
 646        runtime->private_data = ichdev;
 647        return 0;
 648}
 649
 650static int snd_intel8x0m_playback_open(struct snd_pcm_substream *substream)
 651{
 652        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 653
 654        return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMOUT]);
 655}
 656
 657static int snd_intel8x0m_playback_close(struct snd_pcm_substream *substream)
 658{
 659        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 660
 661        chip->ichd[ICHD_MDMOUT].substream = NULL;
 662        return 0;
 663}
 664
 665static int snd_intel8x0m_capture_open(struct snd_pcm_substream *substream)
 666{
 667        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 668
 669        return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMIN]);
 670}
 671
 672static int snd_intel8x0m_capture_close(struct snd_pcm_substream *substream)
 673{
 674        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 675
 676        chip->ichd[ICHD_MDMIN].substream = NULL;
 677        return 0;
 678}
 679
 680
 681static struct snd_pcm_ops snd_intel8x0m_playback_ops = {
 682        .open =         snd_intel8x0m_playback_open,
 683        .close =        snd_intel8x0m_playback_close,
 684        .ioctl =        snd_pcm_lib_ioctl,
 685        .hw_params =    snd_intel8x0m_hw_params,
 686        .hw_free =      snd_intel8x0m_hw_free,
 687        .prepare =      snd_intel8x0m_pcm_prepare,
 688        .trigger =      snd_intel8x0m_pcm_trigger,
 689        .pointer =      snd_intel8x0m_pcm_pointer,
 690};
 691
 692static struct snd_pcm_ops snd_intel8x0m_capture_ops = {
 693        .open =         snd_intel8x0m_capture_open,
 694        .close =        snd_intel8x0m_capture_close,
 695        .ioctl =        snd_pcm_lib_ioctl,
 696        .hw_params =    snd_intel8x0m_hw_params,
 697        .hw_free =      snd_intel8x0m_hw_free,
 698        .prepare =      snd_intel8x0m_pcm_prepare,
 699        .trigger =      snd_intel8x0m_pcm_trigger,
 700        .pointer =      snd_intel8x0m_pcm_pointer,
 701};
 702
 703
 704struct ich_pcm_table {
 705        char *suffix;
 706        struct snd_pcm_ops *playback_ops;
 707        struct snd_pcm_ops *capture_ops;
 708        size_t prealloc_size;
 709        size_t prealloc_max_size;
 710        int ac97_idx;
 711};
 712
 713static int __devinit snd_intel8x0m_pcm1(struct intel8x0m *chip, int device,
 714                                       struct ich_pcm_table *rec)
 715{
 716        struct snd_pcm *pcm;
 717        int err;
 718        char name[32];
 719
 720        if (rec->suffix)
 721                sprintf(name, "Intel ICH - %s", rec->suffix);
 722        else
 723                strcpy(name, "Intel ICH");
 724        err = snd_pcm_new(chip->card, name, device,
 725                          rec->playback_ops ? 1 : 0,
 726                          rec->capture_ops ? 1 : 0, &pcm);
 727        if (err < 0)
 728                return err;
 729
 730        if (rec->playback_ops)
 731                snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, rec->playback_ops);
 732        if (rec->capture_ops)
 733                snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, rec->capture_ops);
 734
 735        pcm->private_data = chip;
 736        pcm->info_flags = 0;
 737        pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
 738        if (rec->suffix)
 739                sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
 740        else
 741                strcpy(pcm->name, chip->card->shortname);
 742        chip->pcm[device] = pcm;
 743
 744        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 745                                              snd_dma_pci_data(chip->pci),
 746                                              rec->prealloc_size,
 747                                              rec->prealloc_max_size);
 748
 749        return 0;
 750}
 751
 752static struct ich_pcm_table intel_pcms[] __devinitdata = {
 753        {
 754                .suffix = "Modem",
 755                .playback_ops = &snd_intel8x0m_playback_ops,
 756                .capture_ops = &snd_intel8x0m_capture_ops,
 757                .prealloc_size = 32 * 1024,
 758                .prealloc_max_size = 64 * 1024,
 759        },
 760};
 761
 762static int __devinit snd_intel8x0m_pcm(struct intel8x0m *chip)
 763{
 764        int i, tblsize, device, err;
 765        struct ich_pcm_table *tbl, *rec;
 766
 767#if 1
 768        tbl = intel_pcms;
 769        tblsize = 1;
 770#else
 771        switch (chip->device_type) {
 772        case DEVICE_NFORCE:
 773                tbl = nforce_pcms;
 774                tblsize = ARRAY_SIZE(nforce_pcms);
 775                break;
 776        case DEVICE_ALI:
 777                tbl = ali_pcms;
 778                tblsize = ARRAY_SIZE(ali_pcms);
 779                break;
 780        default:
 781                tbl = intel_pcms;
 782                tblsize = 2;
 783                break;
 784        }
 785#endif
 786        device = 0;
 787        for (i = 0; i < tblsize; i++) {
 788                rec = tbl + i;
 789                if (i > 0 && rec->ac97_idx) {
 790                        /* activate PCM only when associated AC'97 codec */
 791                        if (! chip->ichd[rec->ac97_idx].ac97)
 792                                continue;
 793                }
 794                err = snd_intel8x0m_pcm1(chip, device, rec);
 795                if (err < 0)
 796                        return err;
 797                device++;
 798        }
 799
 800        chip->pcm_devs = device;
 801        return 0;
 802}
 803        
 804
 805/*
 806 *  Mixer part
 807 */
 808
 809static void snd_intel8x0m_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
 810{
 811        struct intel8x0m *chip = bus->private_data;
 812        chip->ac97_bus = NULL;
 813}
 814
 815static void snd_intel8x0m_mixer_free_ac97(struct snd_ac97 *ac97)
 816{
 817        struct intel8x0m *chip = ac97->private_data;
 818        chip->ac97 = NULL;
 819}
 820
 821
 822static int __devinit snd_intel8x0m_mixer(struct intel8x0m *chip, int ac97_clock)
 823{
 824        struct snd_ac97_bus *pbus;
 825        struct snd_ac97_template ac97;
 826        struct snd_ac97 *x97;
 827        int err;
 828        unsigned int glob_sta = 0;
 829        static struct snd_ac97_bus_ops ops = {
 830                .write = snd_intel8x0m_codec_write,
 831                .read = snd_intel8x0m_codec_read,
 832        };
 833
 834        chip->in_ac97_init = 1;
 835        
 836        memset(&ac97, 0, sizeof(ac97));
 837        ac97.private_data = chip;
 838        ac97.private_free = snd_intel8x0m_mixer_free_ac97;
 839        ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
 840
 841        glob_sta = igetdword(chip, ICHREG(GLOB_STA));
 842
 843        if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
 844                goto __err;
 845        pbus->private_free = snd_intel8x0m_mixer_free_ac97_bus;
 846        if (ac97_clock >= 8000 && ac97_clock <= 48000)
 847                pbus->clock = ac97_clock;
 848        chip->ac97_bus = pbus;
 849
 850        ac97.pci = chip->pci;
 851        ac97.num = glob_sta & ICH_SCR ? 1 : 0;
 852        if ((err = snd_ac97_mixer(pbus, &ac97, &x97)) < 0) {
 853                snd_printk(KERN_ERR "Unable to initialize codec #%d\n", ac97.num);
 854                if (ac97.num == 0)
 855                        goto __err;
 856                return err;
 857        }
 858        chip->ac97 = x97;
 859        if(ac97_is_modem(x97) && !chip->ichd[ICHD_MDMIN].ac97) {
 860                chip->ichd[ICHD_MDMIN].ac97 = x97;
 861                chip->ichd[ICHD_MDMOUT].ac97 = x97;
 862        }
 863
 864        chip->in_ac97_init = 0;
 865        return 0;
 866
 867 __err:
 868        /* clear the cold-reset bit for the next chance */
 869        if (chip->device_type != DEVICE_ALI)
 870                iputdword(chip, ICHREG(GLOB_CNT),
 871                          igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_AC97COLD);
 872        return err;
 873}
 874
 875
 876/*
 877 *
 878 */
 879
 880static int snd_intel8x0m_ich_chip_init(struct intel8x0m *chip, int probing)
 881{
 882        unsigned long end_time;
 883        unsigned int cnt, status, nstatus;
 884        
 885        /* put logic to right state */
 886        /* first clear status bits */
 887        status = ICH_RCS | ICH_MIINT | ICH_MOINT;
 888        cnt = igetdword(chip, ICHREG(GLOB_STA));
 889        iputdword(chip, ICHREG(GLOB_STA), cnt & status);
 890
 891        /* ACLink on, 2 channels */
 892        cnt = igetdword(chip, ICHREG(GLOB_CNT));
 893        cnt &= ~(ICH_ACLINK);
 894        /* finish cold or do warm reset */
 895        cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM;
 896        iputdword(chip, ICHREG(GLOB_CNT), cnt);
 897        usleep_range(500, 1000); /* give warm reset some time */
 898        end_time = jiffies + HZ / 4;
 899        do {
 900                if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)
 901                        goto __ok;
 902                schedule_timeout_uninterruptible(1);
 903        } while (time_after_eq(end_time, jiffies));
 904        snd_printk(KERN_ERR "AC'97 warm reset still in progress? [0x%x]\n",
 905                   igetdword(chip, ICHREG(GLOB_CNT)));
 906        return -EIO;
 907
 908      __ok:
 909        if (probing) {
 910                /* wait for any codec ready status.
 911                 * Once it becomes ready it should remain ready
 912                 * as long as we do not disable the ac97 link.
 913                 */
 914                end_time = jiffies + HZ;
 915                do {
 916                        status = igetdword(chip, ICHREG(GLOB_STA)) &
 917                                (ICH_PCR | ICH_SCR | ICH_TCR);
 918                        if (status)
 919                                break;
 920                        schedule_timeout_uninterruptible(1);
 921                } while (time_after_eq(end_time, jiffies));
 922                if (! status) {
 923                        /* no codec is found */
 924                        snd_printk(KERN_ERR "codec_ready: codec is not ready [0x%x]\n",
 925                                   igetdword(chip, ICHREG(GLOB_STA)));
 926                        return -EIO;
 927                }
 928
 929                /* up to two codecs (modem cannot be tertiary with ICH4) */
 930                nstatus = ICH_PCR | ICH_SCR;
 931
 932                /* wait for other codecs ready status. */
 933                end_time = jiffies + HZ / 4;
 934                while (status != nstatus && time_after_eq(end_time, jiffies)) {
 935                        schedule_timeout_uninterruptible(1);
 936                        status |= igetdword(chip, ICHREG(GLOB_STA)) & nstatus;
 937                }
 938
 939        } else {
 940                /* resume phase */
 941                status = 0;
 942                if (chip->ac97)
 943                        status |= get_ich_codec_bit(chip, chip->ac97->num);
 944                /* wait until all the probed codecs are ready */
 945                end_time = jiffies + HZ;
 946                do {
 947                        nstatus = igetdword(chip, ICHREG(GLOB_STA)) &
 948                                (ICH_PCR | ICH_SCR | ICH_TCR);
 949                        if (status == nstatus)
 950                                break;
 951                        schedule_timeout_uninterruptible(1);
 952                } while (time_after_eq(end_time, jiffies));
 953        }
 954
 955        if (chip->device_type == DEVICE_SIS) {
 956                /* unmute the output on SIS7012 */
 957                iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
 958        }
 959
 960        return 0;
 961}
 962
 963static int snd_intel8x0m_chip_init(struct intel8x0m *chip, int probing)
 964{
 965        unsigned int i;
 966        int err;
 967        
 968        if ((err = snd_intel8x0m_ich_chip_init(chip, probing)) < 0)
 969                return err;
 970        iagetword(chip, 0);     /* clear semaphore flag */
 971
 972        /* disable interrupts */
 973        for (i = 0; i < chip->bdbars_count; i++)
 974                iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
 975        /* reset channels */
 976        for (i = 0; i < chip->bdbars_count; i++)
 977                iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
 978        /* initialize Buffer Descriptor Lists */
 979        for (i = 0; i < chip->bdbars_count; i++)
 980                iputdword(chip, ICH_REG_OFF_BDBAR + chip->ichd[i].reg_offset, chip->ichd[i].bdbar_addr);
 981        return 0;
 982}
 983
 984static int snd_intel8x0m_free(struct intel8x0m *chip)
 985{
 986        unsigned int i;
 987
 988        if (chip->irq < 0)
 989                goto __hw_end;
 990        /* disable interrupts */
 991        for (i = 0; i < chip->bdbars_count; i++)
 992                iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
 993        /* reset channels */
 994        for (i = 0; i < chip->bdbars_count; i++)
 995                iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
 996 __hw_end:
 997        if (chip->irq >= 0)
 998                free_irq(chip->irq, chip);
 999        if (chip->bdbars.area)
1000                snd_dma_free_pages(&chip->bdbars);
1001        if (chip->addr)
1002                pci_iounmap(chip->pci, chip->addr);
1003        if (chip->bmaddr)
1004                pci_iounmap(chip->pci, chip->bmaddr);
1005        pci_release_regions(chip->pci);
1006        pci_disable_device(chip->pci);
1007        kfree(chip);
1008        return 0;
1009}
1010
1011#ifdef CONFIG_PM
1012/*
1013 * power management
1014 */
1015static int intel8x0m_suspend(struct pci_dev *pci, pm_message_t state)
1016{
1017        struct snd_card *card = pci_get_drvdata(pci);
1018        struct intel8x0m *chip = card->private_data;
1019        int i;
1020
1021        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1022        for (i = 0; i < chip->pcm_devs; i++)
1023                snd_pcm_suspend_all(chip->pcm[i]);
1024        snd_ac97_suspend(chip->ac97);
1025        if (chip->irq >= 0) {
1026                free_irq(chip->irq, chip);
1027                chip->irq = -1;
1028        }
1029        pci_disable_device(pci);
1030        pci_save_state(pci);
1031        pci_set_power_state(pci, pci_choose_state(pci, state));
1032        return 0;
1033}
1034
1035static int intel8x0m_resume(struct pci_dev *pci)
1036{
1037        struct snd_card *card = pci_get_drvdata(pci);
1038        struct intel8x0m *chip = card->private_data;
1039
1040        pci_set_power_state(pci, PCI_D0);
1041        pci_restore_state(pci);
1042        if (pci_enable_device(pci) < 0) {
1043                printk(KERN_ERR "intel8x0m: pci_enable_device failed, "
1044                       "disabling device\n");
1045                snd_card_disconnect(card);
1046                return -EIO;
1047        }
1048        pci_set_master(pci);
1049        if (request_irq(pci->irq, snd_intel8x0m_interrupt,
1050                        IRQF_SHARED, card->shortname, chip)) {
1051                printk(KERN_ERR "intel8x0m: unable to grab IRQ %d, "
1052                       "disabling device\n", pci->irq);
1053                snd_card_disconnect(card);
1054                return -EIO;
1055        }
1056        chip->irq = pci->irq;
1057        snd_intel8x0m_chip_init(chip, 0);
1058        snd_ac97_resume(chip->ac97);
1059
1060        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1061        return 0;
1062}
1063#endif /* CONFIG_PM */
1064
1065#ifdef CONFIG_PROC_FS
1066static void snd_intel8x0m_proc_read(struct snd_info_entry * entry,
1067                                   struct snd_info_buffer *buffer)
1068{
1069        struct intel8x0m *chip = entry->private_data;
1070        unsigned int tmp;
1071
1072        snd_iprintf(buffer, "Intel8x0m\n\n");
1073        if (chip->device_type == DEVICE_ALI)
1074                return;
1075        tmp = igetdword(chip, ICHREG(GLOB_STA));
1076        snd_iprintf(buffer, "Global control        : 0x%08x\n",
1077                    igetdword(chip, ICHREG(GLOB_CNT)));
1078        snd_iprintf(buffer, "Global status         : 0x%08x\n", tmp);
1079        snd_iprintf(buffer, "AC'97 codecs ready    :%s%s%s%s\n",
1080                        tmp & ICH_PCR ? " primary" : "",
1081                        tmp & ICH_SCR ? " secondary" : "",
1082                        tmp & ICH_TCR ? " tertiary" : "",
1083                        (tmp & (ICH_PCR | ICH_SCR | ICH_TCR)) == 0 ? " none" : "");
1084}
1085
1086static void __devinit snd_intel8x0m_proc_init(struct intel8x0m * chip)
1087{
1088        struct snd_info_entry *entry;
1089
1090        if (! snd_card_proc_new(chip->card, "intel8x0m", &entry))
1091                snd_info_set_text_ops(entry, chip, snd_intel8x0m_proc_read);
1092}
1093#else /* !CONFIG_PROC_FS */
1094#define snd_intel8x0m_proc_init(chip)
1095#endif /* CONFIG_PROC_FS */
1096
1097
1098static int snd_intel8x0m_dev_free(struct snd_device *device)
1099{
1100        struct intel8x0m *chip = device->device_data;
1101        return snd_intel8x0m_free(chip);
1102}
1103
1104struct ich_reg_info {
1105        unsigned int int_sta_mask;
1106        unsigned int offset;
1107};
1108
1109static int __devinit snd_intel8x0m_create(struct snd_card *card,
1110                                         struct pci_dev *pci,
1111                                         unsigned long device_type,
1112                                         struct intel8x0m **r_intel8x0m)
1113{
1114        struct intel8x0m *chip;
1115        int err;
1116        unsigned int i;
1117        unsigned int int_sta_masks;
1118        struct ichdev *ichdev;
1119        static struct snd_device_ops ops = {
1120                .dev_free =     snd_intel8x0m_dev_free,
1121        };
1122        static struct ich_reg_info intel_regs[2] = {
1123                { ICH_MIINT, 0 },
1124                { ICH_MOINT, 0x10 },
1125        };
1126        struct ich_reg_info *tbl;
1127
1128        *r_intel8x0m = NULL;
1129
1130        if ((err = pci_enable_device(pci)) < 0)
1131                return err;
1132
1133        chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1134        if (chip == NULL) {
1135                pci_disable_device(pci);
1136                return -ENOMEM;
1137        }
1138        spin_lock_init(&chip->reg_lock);
1139        chip->device_type = device_type;
1140        chip->card = card;
1141        chip->pci = pci;
1142        chip->irq = -1;
1143
1144        if ((err = pci_request_regions(pci, card->shortname)) < 0) {
1145                kfree(chip);
1146                pci_disable_device(pci);
1147                return err;
1148        }
1149
1150        if (device_type == DEVICE_ALI) {
1151                /* ALI5455 has no ac97 region */
1152                chip->bmaddr = pci_iomap(pci, 0, 0);
1153                goto port_inited;
1154        }
1155
1156        if (pci_resource_flags(pci, 2) & IORESOURCE_MEM) /* ICH4 and Nforce */
1157                chip->addr = pci_iomap(pci, 2, 0);
1158        else
1159                chip->addr = pci_iomap(pci, 0, 0);
1160        if (!chip->addr) {
1161                snd_printk(KERN_ERR "AC'97 space ioremap problem\n");
1162                snd_intel8x0m_free(chip);
1163                return -EIO;
1164        }
1165        if (pci_resource_flags(pci, 3) & IORESOURCE_MEM) /* ICH4 */
1166                chip->bmaddr = pci_iomap(pci, 3, 0);
1167        else
1168                chip->bmaddr = pci_iomap(pci, 1, 0);
1169        if (!chip->bmaddr) {
1170                snd_printk(KERN_ERR "Controller space ioremap problem\n");
1171                snd_intel8x0m_free(chip);
1172                return -EIO;
1173        }
1174
1175 port_inited:
1176        if (request_irq(pci->irq, snd_intel8x0m_interrupt, IRQF_SHARED,
1177                        card->shortname, chip)) {
1178                snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq);
1179                snd_intel8x0m_free(chip);
1180                return -EBUSY;
1181        }
1182        chip->irq = pci->irq;
1183        pci_set_master(pci);
1184        synchronize_irq(chip->irq);
1185
1186        /* initialize offsets */
1187        chip->bdbars_count = 2;
1188        tbl = intel_regs;
1189
1190        for (i = 0; i < chip->bdbars_count; i++) {
1191                ichdev = &chip->ichd[i];
1192                ichdev->ichd = i;
1193                ichdev->reg_offset = tbl[i].offset;
1194                ichdev->int_sta_mask = tbl[i].int_sta_mask;
1195                if (device_type == DEVICE_SIS) {
1196                        /* SiS 7013 swaps the registers */
1197                        ichdev->roff_sr = ICH_REG_OFF_PICB;
1198                        ichdev->roff_picb = ICH_REG_OFF_SR;
1199                } else {
1200                        ichdev->roff_sr = ICH_REG_OFF_SR;
1201                        ichdev->roff_picb = ICH_REG_OFF_PICB;
1202                }
1203                if (device_type == DEVICE_ALI)
1204                        ichdev->ali_slot = (ichdev->reg_offset - 0x40) / 0x10;
1205        }
1206        /* SIS7013 handles the pcm data in bytes, others are in words */
1207        chip->pcm_pos_shift = (device_type == DEVICE_SIS) ? 0 : 1;
1208
1209        /* allocate buffer descriptor lists */
1210        /* the start of each lists must be aligned to 8 bytes */
1211        if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1212                                chip->bdbars_count * sizeof(u32) * ICH_MAX_FRAGS * 2,
1213                                &chip->bdbars) < 0) {
1214                snd_intel8x0m_free(chip);
1215                return -ENOMEM;
1216        }
1217        /* tables must be aligned to 8 bytes here, but the kernel pages
1218           are much bigger, so we don't care (on i386) */
1219        int_sta_masks = 0;
1220        for (i = 0; i < chip->bdbars_count; i++) {
1221                ichdev = &chip->ichd[i];
1222                ichdev->bdbar = ((u32 *)chip->bdbars.area) + (i * ICH_MAX_FRAGS * 2);
1223                ichdev->bdbar_addr = chip->bdbars.addr + (i * sizeof(u32) * ICH_MAX_FRAGS * 2);
1224                int_sta_masks |= ichdev->int_sta_mask;
1225        }
1226        chip->int_sta_reg = ICH_REG_GLOB_STA;
1227        chip->int_sta_mask = int_sta_masks;
1228
1229        if ((err = snd_intel8x0m_chip_init(chip, 1)) < 0) {
1230                snd_intel8x0m_free(chip);
1231                return err;
1232        }
1233
1234        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1235                snd_intel8x0m_free(chip);
1236                return err;
1237        }
1238
1239        snd_card_set_dev(card, &pci->dev);
1240
1241        *r_intel8x0m = chip;
1242        return 0;
1243}
1244
1245static struct shortname_table {
1246        unsigned int id;
1247        const char *s;
1248} shortnames[] __devinitdata = {
1249        { PCI_DEVICE_ID_INTEL_82801AA_6, "Intel 82801AA-ICH" },
1250        { PCI_DEVICE_ID_INTEL_82801AB_6, "Intel 82901AB-ICH0" },
1251        { PCI_DEVICE_ID_INTEL_82801BA_6, "Intel 82801BA-ICH2" },
1252        { PCI_DEVICE_ID_INTEL_440MX_6, "Intel 440MX" },
1253        { PCI_DEVICE_ID_INTEL_82801CA_6, "Intel 82801CA-ICH3" },
1254        { PCI_DEVICE_ID_INTEL_82801DB_6, "Intel 82801DB-ICH4" },
1255        { PCI_DEVICE_ID_INTEL_82801EB_6, "Intel ICH5" },
1256        { PCI_DEVICE_ID_INTEL_ICH6_17, "Intel ICH6" },
1257        { PCI_DEVICE_ID_INTEL_ICH7_19, "Intel ICH7" },
1258        { 0x7446, "AMD AMD768" },
1259        { PCI_DEVICE_ID_SI_7013, "SiS SI7013" },
1260        { PCI_DEVICE_ID_NVIDIA_MCP1_MODEM, "NVidia nForce" },
1261        { PCI_DEVICE_ID_NVIDIA_MCP2_MODEM, "NVidia nForce2" },
1262        { PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM, "NVidia nForce2s" },
1263        { PCI_DEVICE_ID_NVIDIA_MCP3_MODEM, "NVidia nForce3" },
1264#if 0
1265        { 0x5455, "ALi M5455" },
1266        { 0x746d, "AMD AMD8111" },
1267#endif
1268        { 0 },
1269};
1270
1271static int __devinit snd_intel8x0m_probe(struct pci_dev *pci,
1272                                        const struct pci_device_id *pci_id)
1273{
1274        struct snd_card *card;
1275        struct intel8x0m *chip;
1276        int err;
1277        struct shortname_table *name;
1278
1279        err = snd_card_create(index, id, THIS_MODULE, 0, &card);
1280        if (err < 0)
1281                return err;
1282
1283        strcpy(card->driver, "ICH-MODEM");
1284        strcpy(card->shortname, "Intel ICH");
1285        for (name = shortnames; name->id; name++) {
1286                if (pci->device == name->id) {
1287                        strcpy(card->shortname, name->s);
1288                        break;
1289                }
1290        }
1291        strcat(card->shortname," Modem");
1292
1293        if ((err = snd_intel8x0m_create(card, pci, pci_id->driver_data, &chip)) < 0) {
1294                snd_card_free(card);
1295                return err;
1296        }
1297        card->private_data = chip;
1298
1299        if ((err = snd_intel8x0m_mixer(chip, ac97_clock)) < 0) {
1300                snd_card_free(card);
1301                return err;
1302        }
1303        if ((err = snd_intel8x0m_pcm(chip)) < 0) {
1304                snd_card_free(card);
1305                return err;
1306        }
1307        
1308        snd_intel8x0m_proc_init(chip);
1309
1310        sprintf(card->longname, "%s at irq %i",
1311                card->shortname, chip->irq);
1312
1313        if ((err = snd_card_register(card)) < 0) {
1314                snd_card_free(card);
1315                return err;
1316        }
1317        pci_set_drvdata(pci, card);
1318        return 0;
1319}
1320
1321static 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
1327static struct pci_driver driver = {
1328        .name = "Intel ICH Modem",
1329        .id_table = snd_intel8x0m_ids,
1330        .probe = snd_intel8x0m_probe,
1331        .remove = __devexit_p(snd_intel8x0m_remove),
1332#ifdef CONFIG_PM
1333        .suspend = intel8x0m_suspend,
1334        .resume = intel8x0m_resume,
1335#endif
1336};
1337
1338
1339static int __init alsa_card_intel8x0m_init(void)
1340{
1341        return pci_register_driver(&driver);
1342}
1343
1344static void __exit alsa_card_intel8x0m_exit(void)
1345{
1346        pci_unregister_driver(&driver);
1347}
1348
1349module_init(alsa_card_intel8x0m_init)
1350module_exit(alsa_card_intel8x0m_exit)
1351