linux/sound/pci/intel8x0m.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *   ALSA modem driver for Intel ICH (i8x0) chipsets
   4 *
   5 *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
   6 *
   7 *   This is modified (by Sasha Khapyorsky <sashak@alsa-project.org>) version
   8 *   of ALSA ICH sound driver intel8x0.c .
   9 */      
  10
  11#include <linux/io.h>
  12#include <linux/delay.h>
  13#include <linux/interrupt.h>
  14#include <linux/init.h>
  15#include <linux/pci.h>
  16#include <linux/slab.h>
  17#include <linux/module.h>
  18#include <sound/core.h>
  19#include <sound/pcm.h>
  20#include <sound/ac97_codec.h>
  21#include <sound/info.h>
  22#include <sound/initval.h>
  23
  24MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
  25MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; "
  26                   "SiS 7013; NVidia MCP/2/2S/3 modems");
  27MODULE_LICENSE("GPL");
  28MODULE_SUPPORTED_DEVICE("{{Intel,82801AA-ICH},"
  29                "{Intel,82901AB-ICH0},"
  30                "{Intel,82801BA-ICH2},"
  31                "{Intel,82801CA-ICH3},"
  32                "{Intel,82801DB-ICH4},"
  33                "{Intel,ICH5},"
  34                "{Intel,ICH6},"
  35                "{Intel,ICH7},"
  36                "{Intel,MX440},"
  37                "{SiS,7013},"
  38                "{NVidia,NForce Modem},"
  39                "{NVidia,NForce2 Modem},"
  40                "{NVidia,NForce2s Modem},"
  41                "{NVidia,NForce3 Modem},"
  42                "{AMD,AMD768}}");
  43
  44static int index = -2; /* Exclude the first card */
  45static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
  46static int ac97_clock;
  47
  48module_param(index, int, 0444);
  49MODULE_PARM_DESC(index, "Index value for Intel i8x0 modemcard.");
  50module_param(id, charp, 0444);
  51MODULE_PARM_DESC(id, "ID string for Intel i8x0 modemcard.");
  52module_param(ac97_clock, int, 0444);
  53MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = auto-detect).");
  54
  55/* just for backward compatibility */
  56static bool enable;
  57module_param(enable, bool, 0444);
  58
  59/*
  60 *  Direct registers
  61 */
  62enum { DEVICE_INTEL, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
  63
  64#define ICHREG(x) ICH_REG_##x
  65
  66#define DEFINE_REGSET(name,base) \
  67enum { \
  68        ICH_REG_##name##_BDBAR  = base + 0x0,   /* dword - buffer descriptor list base address */ \
  69        ICH_REG_##name##_CIV    = base + 0x04,  /* byte - current index value */ \
  70        ICH_REG_##name##_LVI    = base + 0x05,  /* byte - last valid index */ \
  71        ICH_REG_##name##_SR     = base + 0x06,  /* byte - status register */ \
  72        ICH_REG_##name##_PICB   = base + 0x08,  /* word - position in current buffer */ \
  73        ICH_REG_##name##_PIV    = base + 0x0a,  /* byte - prefetched index value */ \
  74        ICH_REG_##name##_CR     = base + 0x0b,  /* byte - control register */ \
  75};
  76
  77/* busmaster blocks */
  78DEFINE_REGSET(OFF, 0);          /* offset */
  79
  80/* values for each busmaster block */
  81
  82/* LVI */
  83#define ICH_REG_LVI_MASK                0x1f
  84
  85/* SR */
  86#define ICH_FIFOE                       0x10    /* FIFO error */
  87#define ICH_BCIS                        0x08    /* buffer completion interrupt status */
  88#define ICH_LVBCI                       0x04    /* last valid buffer completion interrupt */
  89#define ICH_CELV                        0x02    /* current equals last valid */
  90#define ICH_DCH                         0x01    /* DMA controller halted */
  91
  92/* PIV */
  93#define ICH_REG_PIV_MASK                0x1f    /* mask */
  94
  95/* CR */
  96#define ICH_IOCE                        0x10    /* interrupt on completion enable */
  97#define ICH_FEIE                        0x08    /* fifo error interrupt enable */
  98#define ICH_LVBIE                       0x04    /* last valid buffer interrupt enable */
  99#define ICH_RESETREGS                   0x02    /* reset busmaster registers */
 100#define ICH_STARTBM                     0x01    /* start busmaster operation */
 101
 102
 103/* global block */
 104#define ICH_REG_GLOB_CNT                0x3c    /* dword - global control */
 105#define   ICH_TRIE              0x00000040      /* tertiary resume interrupt enable */
 106#define   ICH_SRIE              0x00000020      /* secondary resume interrupt enable */
 107#define   ICH_PRIE              0x00000010      /* primary resume interrupt enable */
 108#define   ICH_ACLINK            0x00000008      /* AClink shut off */
 109#define   ICH_AC97WARM          0x00000004      /* AC'97 warm reset */
 110#define   ICH_AC97COLD          0x00000002      /* AC'97 cold reset */
 111#define   ICH_GIE               0x00000001      /* GPI interrupt enable */
 112#define ICH_REG_GLOB_STA                0x40    /* dword - global status */
 113#define   ICH_TRI               0x20000000      /* ICH4: tertiary (AC_SDIN2) resume interrupt */
 114#define   ICH_TCR               0x10000000      /* ICH4: tertiary (AC_SDIN2) codec ready */
 115#define   ICH_BCS               0x08000000      /* ICH4: bit clock stopped */
 116#define   ICH_SPINT             0x04000000      /* ICH4: S/PDIF interrupt */
 117#define   ICH_P2INT             0x02000000      /* ICH4: PCM2-In interrupt */
 118#define   ICH_M2INT             0x01000000      /* ICH4: Mic2-In interrupt */
 119#define   ICH_SAMPLE_CAP        0x00c00000      /* ICH4: sample capability bits (RO) */
 120#define   ICH_MULTICHAN_CAP     0x00300000      /* ICH4: multi-channel capability bits (RO) */
 121#define   ICH_MD3               0x00020000      /* modem power down semaphore */
 122#define   ICH_AD3               0x00010000      /* audio power down semaphore */
 123#define   ICH_RCS               0x00008000      /* read completion status */
 124#define   ICH_BIT3              0x00004000      /* bit 3 slot 12 */
 125#define   ICH_BIT2              0x00002000      /* bit 2 slot 12 */
 126#define   ICH_BIT1              0x00001000      /* bit 1 slot 12 */
 127#define   ICH_SRI               0x00000800      /* secondary (AC_SDIN1) resume interrupt */
 128#define   ICH_PRI               0x00000400      /* primary (AC_SDIN0) resume interrupt */
 129#define   ICH_SCR               0x00000200      /* secondary (AC_SDIN1) codec ready */
 130#define   ICH_PCR               0x00000100      /* primary (AC_SDIN0) codec ready */
 131#define   ICH_MCINT             0x00000080      /* MIC capture interrupt */
 132#define   ICH_POINT             0x00000040      /* playback interrupt */
 133#define   ICH_PIINT             0x00000020      /* capture interrupt */
 134#define   ICH_NVSPINT           0x00000010      /* nforce spdif interrupt */
 135#define   ICH_MOINT             0x00000004      /* modem playback interrupt */
 136#define   ICH_MIINT             0x00000002      /* modem capture interrupt */
 137#define   ICH_GSCI              0x00000001      /* GPI status change interrupt */
 138#define ICH_REG_ACC_SEMA                0x44    /* byte - codec write semaphore */
 139#define   ICH_CAS               0x01            /* codec access semaphore */
 140
 141#define ICH_MAX_FRAGS           32              /* max hw frags */
 142
 143
 144/*
 145 *  
 146 */
 147
 148enum { ICHD_MDMIN, ICHD_MDMOUT, ICHD_MDMLAST = ICHD_MDMOUT };
 149enum { ALID_MDMIN, ALID_MDMOUT, ALID_MDMLAST = ALID_MDMOUT };
 150
 151#define get_ichdev(substream) (substream->runtime->private_data)
 152
 153struct ichdev {
 154        unsigned int ichd;                      /* ich device number */
 155        unsigned long reg_offset;               /* offset to bmaddr */
 156        __le32 *bdbar;                          /* CPU address (32bit) */
 157        unsigned int bdbar_addr;                /* PCI bus address (32bit) */
 158        struct snd_pcm_substream *substream;
 159        unsigned int physbuf;                   /* physical address (32bit) */
 160        unsigned int size;
 161        unsigned int fragsize;
 162        unsigned int fragsize1;
 163        unsigned int position;
 164        int frags;
 165        int lvi;
 166        int lvi_frag;
 167        int civ;
 168        int ack;
 169        int ack_reload;
 170        unsigned int ack_bit;
 171        unsigned int roff_sr;
 172        unsigned int roff_picb;
 173        unsigned int int_sta_mask;              /* interrupt status mask */
 174        unsigned int ali_slot;                  /* ALI DMA slot */
 175        struct snd_ac97 *ac97;
 176};
 177
 178struct intel8x0m {
 179        unsigned int device_type;
 180
 181        int irq;
 182
 183        void __iomem *addr;
 184        void __iomem *bmaddr;
 185
 186        struct pci_dev *pci;
 187        struct snd_card *card;
 188
 189        int pcm_devs;
 190        struct snd_pcm *pcm[2];
 191        struct ichdev ichd[2];
 192
 193        unsigned int in_ac97_init: 1;
 194
 195        struct snd_ac97_bus *ac97_bus;
 196        struct snd_ac97 *ac97;
 197
 198        spinlock_t reg_lock;
 199        
 200        struct snd_dma_buffer bdbars;
 201        u32 bdbars_count;
 202        u32 int_sta_reg;                /* interrupt status register */
 203        u32 int_sta_mask;               /* interrupt status mask */
 204        unsigned int pcm_pos_shift;
 205};
 206
 207static const struct pci_device_id snd_intel8x0m_ids[] = {
 208        { PCI_VDEVICE(INTEL, 0x2416), DEVICE_INTEL },   /* 82801AA */
 209        { PCI_VDEVICE(INTEL, 0x2426), DEVICE_INTEL },   /* 82901AB */
 210        { PCI_VDEVICE(INTEL, 0x2446), DEVICE_INTEL },   /* 82801BA */
 211        { PCI_VDEVICE(INTEL, 0x2486), DEVICE_INTEL },   /* ICH3 */
 212        { PCI_VDEVICE(INTEL, 0x24c6), DEVICE_INTEL }, /* ICH4 */
 213        { PCI_VDEVICE(INTEL, 0x24d6), DEVICE_INTEL }, /* ICH5 */
 214        { PCI_VDEVICE(INTEL, 0x266d), DEVICE_INTEL },   /* ICH6 */
 215        { PCI_VDEVICE(INTEL, 0x27dd), DEVICE_INTEL },   /* ICH7 */
 216        { PCI_VDEVICE(INTEL, 0x7196), DEVICE_INTEL },   /* 440MX */
 217        { PCI_VDEVICE(AMD, 0x7446), DEVICE_INTEL },     /* AMD768 */
 218        { PCI_VDEVICE(SI, 0x7013), DEVICE_SIS },        /* SI7013 */
 219        { PCI_VDEVICE(NVIDIA, 0x01c1), DEVICE_NFORCE }, /* NFORCE */
 220        { PCI_VDEVICE(NVIDIA, 0x0069), DEVICE_NFORCE }, /* NFORCE2 */
 221        { PCI_VDEVICE(NVIDIA, 0x0089), DEVICE_NFORCE }, /* NFORCE2s */
 222        { PCI_VDEVICE(NVIDIA, 0x00d9), DEVICE_NFORCE }, /* NFORCE3 */
 223        { PCI_VDEVICE(AMD, 0x746e), DEVICE_INTEL },     /* AMD8111 */
 224#if 0
 225        { PCI_VDEVICE(AL, 0x5455), DEVICE_ALI },   /* Ali5455 */
 226#endif
 227        { 0, }
 228};
 229
 230MODULE_DEVICE_TABLE(pci, snd_intel8x0m_ids);
 231
 232/*
 233 *  Lowlevel I/O - busmaster
 234 */
 235
 236static inline u8 igetbyte(struct intel8x0m *chip, u32 offset)
 237{
 238        return ioread8(chip->bmaddr + offset);
 239}
 240
 241static inline u16 igetword(struct intel8x0m *chip, u32 offset)
 242{
 243        return ioread16(chip->bmaddr + offset);
 244}
 245
 246static inline u32 igetdword(struct intel8x0m *chip, u32 offset)
 247{
 248        return ioread32(chip->bmaddr + offset);
 249}
 250
 251static inline void iputbyte(struct intel8x0m *chip, u32 offset, u8 val)
 252{
 253        iowrite8(val, chip->bmaddr + offset);
 254}
 255
 256static inline void iputword(struct intel8x0m *chip, u32 offset, u16 val)
 257{
 258        iowrite16(val, chip->bmaddr + offset);
 259}
 260
 261static inline void iputdword(struct intel8x0m *chip, u32 offset, u32 val)
 262{
 263        iowrite32(val, chip->bmaddr + offset);
 264}
 265
 266/*
 267 *  Lowlevel I/O - AC'97 registers
 268 */
 269
 270static inline u16 iagetword(struct intel8x0m *chip, u32 offset)
 271{
 272        return ioread16(chip->addr + offset);
 273}
 274
 275static inline void iaputword(struct intel8x0m *chip, u32 offset, u16 val)
 276{
 277        iowrite16(val, chip->addr + offset);
 278}
 279
 280/*
 281 *  Basic I/O
 282 */
 283
 284/*
 285 * access to AC97 codec via normal i/o (for ICH and SIS7013)
 286 */
 287
 288/* return the GLOB_STA bit for the corresponding codec */
 289static unsigned int get_ich_codec_bit(struct intel8x0m *chip, unsigned int codec)
 290{
 291        static unsigned int codec_bit[3] = {
 292                ICH_PCR, ICH_SCR, ICH_TCR
 293        };
 294        if (snd_BUG_ON(codec >= 3))
 295                return ICH_PCR;
 296        return codec_bit[codec];
 297}
 298
 299static int snd_intel8x0m_codec_semaphore(struct intel8x0m *chip, unsigned int codec)
 300{
 301        int time;
 302        
 303        if (codec > 1)
 304                return -EIO;
 305        codec = get_ich_codec_bit(chip, codec);
 306
 307        /* codec ready ? */
 308        if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
 309                return -EIO;
 310
 311        /* Anyone holding a semaphore for 1 msec should be shot... */
 312        time = 100;
 313        do {
 314                if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
 315                        return 0;
 316                udelay(10);
 317        } while (time--);
 318
 319        /* access to some forbidden (non existent) ac97 registers will not
 320         * reset the semaphore. So even if you don't get the semaphore, still
 321         * continue the access. We don't need the semaphore anyway. */
 322        dev_err(chip->card->dev,
 323                "codec_semaphore: semaphore is not ready [0x%x][0x%x]\n",
 324                        igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
 325        iagetword(chip, 0);     /* clear semaphore flag */
 326        /* I don't care about the semaphore */
 327        return -EBUSY;
 328}
 329 
 330static void snd_intel8x0m_codec_write(struct snd_ac97 *ac97,
 331                                      unsigned short reg,
 332                                      unsigned short val)
 333{
 334        struct intel8x0m *chip = ac97->private_data;
 335        
 336        if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
 337                if (! chip->in_ac97_init)
 338                        dev_err(chip->card->dev,
 339                                "codec_write %d: semaphore is not ready for register 0x%x\n",
 340                                ac97->num, reg);
 341        }
 342        iaputword(chip, reg + ac97->num * 0x80, val);
 343}
 344
 345static unsigned short snd_intel8x0m_codec_read(struct snd_ac97 *ac97,
 346                                               unsigned short reg)
 347{
 348        struct intel8x0m *chip = ac97->private_data;
 349        unsigned short res;
 350        unsigned int tmp;
 351
 352        if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
 353                if (! chip->in_ac97_init)
 354                        dev_err(chip->card->dev,
 355                                "codec_read %d: semaphore is not ready for register 0x%x\n",
 356                                ac97->num, reg);
 357                res = 0xffff;
 358        } else {
 359                res = iagetword(chip, reg + ac97->num * 0x80);
 360                if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
 361                        /* reset RCS and preserve other R/WC bits */
 362                        iputdword(chip, ICHREG(GLOB_STA),
 363                                  tmp & ~(ICH_SRI|ICH_PRI|ICH_TRI|ICH_GSCI));
 364                        if (! chip->in_ac97_init)
 365                                dev_err(chip->card->dev,
 366                                        "codec_read %d: read timeout for register 0x%x\n",
 367                                        ac97->num, reg);
 368                        res = 0xffff;
 369                }
 370        }
 371        if (reg == AC97_GPIO_STATUS)
 372                iagetword(chip, 0); /* clear semaphore */
 373        return res;
 374}
 375
 376
 377/*
 378 * DMA I/O
 379 */
 380static void snd_intel8x0m_setup_periods(struct intel8x0m *chip, struct ichdev *ichdev)
 381{
 382        int idx;
 383        __le32 *bdbar = ichdev->bdbar;
 384        unsigned long port = ichdev->reg_offset;
 385
 386        iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
 387        if (ichdev->size == ichdev->fragsize) {
 388                ichdev->ack_reload = ichdev->ack = 2;
 389                ichdev->fragsize1 = ichdev->fragsize >> 1;
 390                for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
 391                        bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
 392                        bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 393                                                     ichdev->fragsize1 >> chip->pcm_pos_shift);
 394                        bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
 395                        bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 396                                                     ichdev->fragsize1 >> chip->pcm_pos_shift);
 397                }
 398                ichdev->frags = 2;
 399        } else {
 400                ichdev->ack_reload = ichdev->ack = 1;
 401                ichdev->fragsize1 = ichdev->fragsize;
 402                for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {
 403                        bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf + (((idx >> 1) * ichdev->fragsize) % ichdev->size));
 404                        bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
 405                                                     ichdev->fragsize >> chip->pcm_pos_shift);
 406                        /*
 407                        dev_dbg(chip->card->dev, "bdbar[%i] = 0x%x [0x%x]\n",
 408                               idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
 409                        */
 410                }
 411                ichdev->frags = ichdev->size / ichdev->fragsize;
 412        }
 413        iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
 414        ichdev->civ = 0;
 415        iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
 416        ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
 417        ichdev->position = 0;
 418#if 0
 419        dev_dbg(chip->card->dev,
 420                "lvi_frag = %i, frags = %i, period_size = 0x%x, period_size1 = 0x%x\n",
 421               ichdev->lvi_frag, ichdev->frags, ichdev->fragsize,
 422               ichdev->fragsize1);
 423#endif
 424        /* clear interrupts */
 425        iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
 426}
 427
 428/*
 429 *  Interrupt handler
 430 */
 431
 432static inline void snd_intel8x0m_update(struct intel8x0m *chip, struct ichdev *ichdev)
 433{
 434        unsigned long port = ichdev->reg_offset;
 435        int civ, i, step;
 436        int ack = 0;
 437
 438        civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
 439        if (civ == ichdev->civ) {
 440                // snd_printd("civ same %d\n", civ);
 441                step = 1;
 442                ichdev->civ++;
 443                ichdev->civ &= ICH_REG_LVI_MASK;
 444        } else {
 445                step = civ - ichdev->civ;
 446                if (step < 0)
 447                        step += ICH_REG_LVI_MASK + 1;
 448                // if (step != 1)
 449                //      snd_printd("step = %d, %d -> %d\n", step, ichdev->civ, civ);
 450                ichdev->civ = civ;
 451        }
 452
 453        ichdev->position += step * ichdev->fragsize1;
 454        ichdev->position %= ichdev->size;
 455        ichdev->lvi += step;
 456        ichdev->lvi &= ICH_REG_LVI_MASK;
 457        iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
 458        for (i = 0; i < step; i++) {
 459                ichdev->lvi_frag++;
 460                ichdev->lvi_frag %= ichdev->frags;
 461                ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf +
 462                                                             ichdev->lvi_frag *
 463                                                             ichdev->fragsize1);
 464#if 0
 465                dev_dbg(chip->card->dev,
 466                        "new: bdbar[%i] = 0x%x [0x%x], prefetch = %i, all = 0x%x, 0x%x\n",
 467                       ichdev->lvi * 2, ichdev->bdbar[ichdev->lvi * 2],
 468                       ichdev->bdbar[ichdev->lvi * 2 + 1], inb(ICH_REG_OFF_PIV + port),
 469                       inl(port + 4), inb(port + ICH_REG_OFF_CR));
 470#endif
 471                if (--ichdev->ack == 0) {
 472                        ichdev->ack = ichdev->ack_reload;
 473                        ack = 1;
 474                }
 475        }
 476        if (ack && ichdev->substream) {
 477                spin_unlock(&chip->reg_lock);
 478                snd_pcm_period_elapsed(ichdev->substream);
 479                spin_lock(&chip->reg_lock);
 480        }
 481        iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
 482}
 483
 484static irqreturn_t snd_intel8x0m_interrupt(int irq, void *dev_id)
 485{
 486        struct intel8x0m *chip = dev_id;
 487        struct ichdev *ichdev;
 488        unsigned int status;
 489        unsigned int i;
 490
 491        spin_lock(&chip->reg_lock);
 492        status = igetdword(chip, chip->int_sta_reg);
 493        if (status == 0xffffffff) { /* we are not yet resumed */
 494                spin_unlock(&chip->reg_lock);
 495                return IRQ_NONE;
 496        }
 497        if ((status & chip->int_sta_mask) == 0) {
 498                if (status)
 499                        iputdword(chip, chip->int_sta_reg, status);
 500                spin_unlock(&chip->reg_lock);
 501                return IRQ_NONE;
 502        }
 503
 504        for (i = 0; i < chip->bdbars_count; i++) {
 505                ichdev = &chip->ichd[i];
 506                if (status & ichdev->int_sta_mask)
 507                        snd_intel8x0m_update(chip, ichdev);
 508        }
 509
 510        /* ack them */
 511        iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
 512        spin_unlock(&chip->reg_lock);
 513        
 514        return IRQ_HANDLED;
 515}
 516
 517/*
 518 *  PCM part
 519 */
 520
 521static int snd_intel8x0m_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 522{
 523        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 524        struct ichdev *ichdev = get_ichdev(substream);
 525        unsigned char val = 0;
 526        unsigned long port = ichdev->reg_offset;
 527
 528        switch (cmd) {
 529        case SNDRV_PCM_TRIGGER_START:
 530        case SNDRV_PCM_TRIGGER_RESUME:
 531                val = ICH_IOCE | ICH_STARTBM;
 532                break;
 533        case SNDRV_PCM_TRIGGER_STOP:
 534        case SNDRV_PCM_TRIGGER_SUSPEND:
 535                val = 0;
 536                break;
 537        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 538                val = ICH_IOCE;
 539                break;
 540        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 541                val = ICH_IOCE | ICH_STARTBM;
 542                break;
 543        default:
 544                return -EINVAL;
 545        }
 546        iputbyte(chip, port + ICH_REG_OFF_CR, val);
 547        if (cmd == SNDRV_PCM_TRIGGER_STOP) {
 548                /* wait until DMA stopped */
 549                while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
 550                /* reset whole DMA things */
 551                iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
 552        }
 553        return 0;
 554}
 555
 556static int snd_intel8x0m_hw_params(struct snd_pcm_substream *substream,
 557                                  struct snd_pcm_hw_params *hw_params)
 558{
 559        return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 560}
 561
 562static int snd_intel8x0m_hw_free(struct snd_pcm_substream *substream)
 563{
 564        return snd_pcm_lib_free_pages(substream);
 565}
 566
 567static snd_pcm_uframes_t snd_intel8x0m_pcm_pointer(struct snd_pcm_substream *substream)
 568{
 569        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 570        struct ichdev *ichdev = get_ichdev(substream);
 571        size_t ptr1, ptr;
 572
 573        ptr1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb) << chip->pcm_pos_shift;
 574        if (ptr1 != 0)
 575                ptr = ichdev->fragsize1 - ptr1;
 576        else
 577                ptr = 0;
 578        ptr += ichdev->position;
 579        if (ptr >= ichdev->size)
 580                return 0;
 581        return bytes_to_frames(substream->runtime, ptr);
 582}
 583
 584static int snd_intel8x0m_pcm_prepare(struct snd_pcm_substream *substream)
 585{
 586        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 587        struct snd_pcm_runtime *runtime = substream->runtime;
 588        struct ichdev *ichdev = get_ichdev(substream);
 589
 590        ichdev->physbuf = runtime->dma_addr;
 591        ichdev->size = snd_pcm_lib_buffer_bytes(substream);
 592        ichdev->fragsize = snd_pcm_lib_period_bytes(substream);
 593        snd_ac97_write(ichdev->ac97, AC97_LINE1_RATE, runtime->rate);
 594        snd_ac97_write(ichdev->ac97, AC97_LINE1_LEVEL, 0);
 595        snd_intel8x0m_setup_periods(chip, ichdev);
 596        return 0;
 597}
 598
 599static const struct snd_pcm_hardware snd_intel8x0m_stream =
 600{
 601        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
 602                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 603                                 SNDRV_PCM_INFO_MMAP_VALID |
 604                                 SNDRV_PCM_INFO_PAUSE |
 605                                 SNDRV_PCM_INFO_RESUME),
 606        .formats =              SNDRV_PCM_FMTBIT_S16_LE,
 607        .rates =                SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
 608        .rate_min =             8000,
 609        .rate_max =             16000,
 610        .channels_min =         1,
 611        .channels_max =         1,
 612        .buffer_bytes_max =     64 * 1024,
 613        .period_bytes_min =     32,
 614        .period_bytes_max =     64 * 1024,
 615        .periods_min =          1,
 616        .periods_max =          1024,
 617        .fifo_size =            0,
 618};
 619
 620
 621static int snd_intel8x0m_pcm_open(struct snd_pcm_substream *substream, struct ichdev *ichdev)
 622{
 623        static const unsigned int rates[] = { 8000,  9600, 12000, 16000 };
 624        static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
 625                .count = ARRAY_SIZE(rates),
 626                .list = rates,
 627                .mask = 0,
 628        };
 629        struct snd_pcm_runtime *runtime = substream->runtime;
 630        int err;
 631
 632        ichdev->substream = substream;
 633        runtime->hw = snd_intel8x0m_stream;
 634        err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 635                                         &hw_constraints_rates);
 636        if ( err < 0 )
 637                return err;
 638        runtime->private_data = ichdev;
 639        return 0;
 640}
 641
 642static int snd_intel8x0m_playback_open(struct snd_pcm_substream *substream)
 643{
 644        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 645
 646        return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMOUT]);
 647}
 648
 649static int snd_intel8x0m_playback_close(struct snd_pcm_substream *substream)
 650{
 651        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 652
 653        chip->ichd[ICHD_MDMOUT].substream = NULL;
 654        return 0;
 655}
 656
 657static int snd_intel8x0m_capture_open(struct snd_pcm_substream *substream)
 658{
 659        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 660
 661        return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMIN]);
 662}
 663
 664static int snd_intel8x0m_capture_close(struct snd_pcm_substream *substream)
 665{
 666        struct intel8x0m *chip = snd_pcm_substream_chip(substream);
 667
 668        chip->ichd[ICHD_MDMIN].substream = NULL;
 669        return 0;
 670}
 671
 672
 673static const struct snd_pcm_ops snd_intel8x0m_playback_ops = {
 674        .open =         snd_intel8x0m_playback_open,
 675        .close =        snd_intel8x0m_playback_close,
 676        .ioctl =        snd_pcm_lib_ioctl,
 677        .hw_params =    snd_intel8x0m_hw_params,
 678        .hw_free =      snd_intel8x0m_hw_free,
 679        .prepare =      snd_intel8x0m_pcm_prepare,
 680        .trigger =      snd_intel8x0m_pcm_trigger,
 681        .pointer =      snd_intel8x0m_pcm_pointer,
 682};
 683
 684static const struct snd_pcm_ops snd_intel8x0m_capture_ops = {
 685        .open =         snd_intel8x0m_capture_open,
 686        .close =        snd_intel8x0m_capture_close,
 687        .ioctl =        snd_pcm_lib_ioctl,
 688        .hw_params =    snd_intel8x0m_hw_params,
 689        .hw_free =      snd_intel8x0m_hw_free,
 690        .prepare =      snd_intel8x0m_pcm_prepare,
 691        .trigger =      snd_intel8x0m_pcm_trigger,
 692        .pointer =      snd_intel8x0m_pcm_pointer,
 693};
 694
 695
 696struct ich_pcm_table {
 697        char *suffix;
 698        const struct snd_pcm_ops *playback_ops;
 699        const struct snd_pcm_ops *capture_ops;
 700        size_t prealloc_size;
 701        size_t prealloc_max_size;
 702        int ac97_idx;
 703};
 704
 705static int snd_intel8x0m_pcm1(struct intel8x0m *chip, int device,
 706                              struct ich_pcm_table *rec)
 707{
 708        struct snd_pcm *pcm;
 709        int err;
 710        char name[32];
 711
 712        if (rec->suffix)
 713                sprintf(name, "Intel ICH - %s", rec->suffix);
 714        else
 715                strcpy(name, "Intel ICH");
 716        err = snd_pcm_new(chip->card, name, device,
 717                          rec->playback_ops ? 1 : 0,
 718                          rec->capture_ops ? 1 : 0, &pcm);
 719        if (err < 0)
 720                return err;
 721
 722        if (rec->playback_ops)
 723                snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, rec->playback_ops);
 724        if (rec->capture_ops)
 725                snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, rec->capture_ops);
 726
 727        pcm->private_data = chip;
 728        pcm->info_flags = 0;
 729        pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
 730        if (rec->suffix)
 731                sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
 732        else
 733                strcpy(pcm->name, chip->card->shortname);
 734        chip->pcm[device] = pcm;
 735
 736        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
 737                                              snd_dma_pci_data(chip->pci),
 738                                              rec->prealloc_size,
 739                                              rec->prealloc_max_size);
 740
 741        return 0;
 742}
 743
 744static struct ich_pcm_table intel_pcms[] = {
 745        {
 746                .suffix = "Modem",
 747                .playback_ops = &snd_intel8x0m_playback_ops,
 748                .capture_ops = &snd_intel8x0m_capture_ops,
 749                .prealloc_size = 32 * 1024,
 750                .prealloc_max_size = 64 * 1024,
 751        },
 752};
 753
 754static int snd_intel8x0m_pcm(struct intel8x0m *chip)
 755{
 756        int i, tblsize, device, err;
 757        struct ich_pcm_table *tbl, *rec;
 758
 759#if 1
 760        tbl = intel_pcms;
 761        tblsize = 1;
 762#else
 763        switch (chip->device_type) {
 764        case DEVICE_NFORCE:
 765                tbl = nforce_pcms;
 766                tblsize = ARRAY_SIZE(nforce_pcms);
 767                break;
 768        case DEVICE_ALI:
 769                tbl = ali_pcms;
 770                tblsize = ARRAY_SIZE(ali_pcms);
 771                break;
 772        default:
 773                tbl = intel_pcms;
 774                tblsize = 2;
 775                break;
 776        }
 777#endif
 778        device = 0;
 779        for (i = 0; i < tblsize; i++) {
 780                rec = tbl + i;
 781                if (i > 0 && rec->ac97_idx) {
 782                        /* activate PCM only when associated AC'97 codec */
 783                        if (! chip->ichd[rec->ac97_idx].ac97)
 784                                continue;
 785                }
 786                err = snd_intel8x0m_pcm1(chip, device, rec);
 787                if (err < 0)
 788                        return err;
 789                device++;
 790        }
 791
 792        chip->pcm_devs = device;
 793        return 0;
 794}
 795        
 796
 797/*
 798 *  Mixer part
 799 */
 800
 801static void snd_intel8x0m_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
 802{
 803        struct intel8x0m *chip = bus->private_data;
 804        chip->ac97_bus = NULL;
 805}
 806
 807static void snd_intel8x0m_mixer_free_ac97(struct snd_ac97 *ac97)
 808{
 809        struct intel8x0m *chip = ac97->private_data;
 810        chip->ac97 = NULL;
 811}
 812
 813
 814static int snd_intel8x0m_mixer(struct intel8x0m *chip, int ac97_clock)
 815{
 816        struct snd_ac97_bus *pbus;
 817        struct snd_ac97_template ac97;
 818        struct snd_ac97 *x97;
 819        int err;
 820        unsigned int glob_sta = 0;
 821        static struct snd_ac97_bus_ops ops = {
 822                .write = snd_intel8x0m_codec_write,
 823                .read = snd_intel8x0m_codec_read,
 824        };
 825
 826        chip->in_ac97_init = 1;
 827        
 828        memset(&ac97, 0, sizeof(ac97));
 829        ac97.private_data = chip;
 830        ac97.private_free = snd_intel8x0m_mixer_free_ac97;
 831        ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
 832
 833        glob_sta = igetdword(chip, ICHREG(GLOB_STA));
 834
 835        if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
 836                goto __err;
 837        pbus->private_free = snd_intel8x0m_mixer_free_ac97_bus;
 838        if (ac97_clock >= 8000 && ac97_clock <= 48000)
 839                pbus->clock = ac97_clock;
 840        chip->ac97_bus = pbus;
 841
 842        ac97.pci = chip->pci;
 843        ac97.num = glob_sta & ICH_SCR ? 1 : 0;
 844        if ((err = snd_ac97_mixer(pbus, &ac97, &x97)) < 0) {
 845                dev_err(chip->card->dev,
 846                        "Unable to initialize codec #%d\n", ac97.num);
 847                if (ac97.num == 0)
 848                        goto __err;
 849                return err;
 850        }
 851        chip->ac97 = x97;
 852        if(ac97_is_modem(x97) && !chip->ichd[ICHD_MDMIN].ac97) {
 853                chip->ichd[ICHD_MDMIN].ac97 = x97;
 854                chip->ichd[ICHD_MDMOUT].ac97 = x97;
 855        }
 856
 857        chip->in_ac97_init = 0;
 858        return 0;
 859
 860 __err:
 861        /* clear the cold-reset bit for the next chance */
 862        if (chip->device_type != DEVICE_ALI)
 863                iputdword(chip, ICHREG(GLOB_CNT),
 864                          igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_AC97COLD);
 865        return err;
 866}
 867
 868
 869/*
 870 *
 871 */
 872
 873static int snd_intel8x0m_ich_chip_init(struct intel8x0m *chip, int probing)
 874{
 875        unsigned long end_time;
 876        unsigned int cnt, status, nstatus;
 877        
 878        /* put logic to right state */
 879        /* first clear status bits */
 880        status = ICH_RCS | ICH_MIINT | ICH_MOINT;
 881        cnt = igetdword(chip, ICHREG(GLOB_STA));
 882        iputdword(chip, ICHREG(GLOB_STA), cnt & status);
 883
 884        /* ACLink on, 2 channels */
 885        cnt = igetdword(chip, ICHREG(GLOB_CNT));
 886        cnt &= ~(ICH_ACLINK);
 887        /* finish cold or do warm reset */
 888        cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM;
 889        iputdword(chip, ICHREG(GLOB_CNT), cnt);
 890        usleep_range(500, 1000); /* give warm reset some time */
 891        end_time = jiffies + HZ / 4;
 892        do {
 893                if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)
 894                        goto __ok;
 895                schedule_timeout_uninterruptible(1);
 896        } while (time_after_eq(end_time, jiffies));
 897        dev_err(chip->card->dev, "AC'97 warm reset still in progress? [0x%x]\n",
 898                   igetdword(chip, ICHREG(GLOB_CNT)));
 899        return -EIO;
 900
 901      __ok:
 902        if (probing) {
 903                /* wait for any codec ready status.
 904                 * Once it becomes ready it should remain ready
 905                 * as long as we do not disable the ac97 link.
 906                 */
 907                end_time = jiffies + HZ;
 908                do {
 909                        status = igetdword(chip, ICHREG(GLOB_STA)) &
 910                                (ICH_PCR | ICH_SCR | ICH_TCR);
 911                        if (status)
 912                                break;
 913                        schedule_timeout_uninterruptible(1);
 914                } while (time_after_eq(end_time, jiffies));
 915                if (! status) {
 916                        /* no codec is found */
 917                        dev_err(chip->card->dev,
 918                                "codec_ready: codec is not ready [0x%x]\n",
 919                                   igetdword(chip, ICHREG(GLOB_STA)));
 920                        return -EIO;
 921                }
 922
 923                /* up to two codecs (modem cannot be tertiary with ICH4) */
 924                nstatus = ICH_PCR | ICH_SCR;
 925
 926                /* wait for other codecs ready status. */
 927                end_time = jiffies + HZ / 4;
 928                while (status != nstatus && time_after_eq(end_time, jiffies)) {
 929                        schedule_timeout_uninterruptible(1);
 930                        status |= igetdword(chip, ICHREG(GLOB_STA)) & nstatus;
 931                }
 932
 933        } else {
 934                /* resume phase */
 935                status = 0;
 936                if (chip->ac97)
 937                        status |= get_ich_codec_bit(chip, chip->ac97->num);
 938                /* wait until all the probed codecs are ready */
 939                end_time = jiffies + HZ;
 940                do {
 941                        nstatus = igetdword(chip, ICHREG(GLOB_STA)) &
 942                                (ICH_PCR | ICH_SCR | ICH_TCR);
 943                        if (status == nstatus)
 944                                break;
 945                        schedule_timeout_uninterruptible(1);
 946                } while (time_after_eq(end_time, jiffies));
 947        }
 948
 949        if (chip->device_type == DEVICE_SIS) {
 950                /* unmute the output on SIS7012 */
 951                iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
 952        }
 953
 954        return 0;
 955}
 956
 957static int snd_intel8x0m_chip_init(struct intel8x0m *chip, int probing)
 958{
 959        unsigned int i;
 960        int err;
 961        
 962        if ((err = snd_intel8x0m_ich_chip_init(chip, probing)) < 0)
 963                return err;
 964        iagetword(chip, 0);     /* clear semaphore flag */
 965
 966        /* disable interrupts */
 967        for (i = 0; i < chip->bdbars_count; i++)
 968                iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
 969        /* reset channels */
 970        for (i = 0; i < chip->bdbars_count; i++)
 971                iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
 972        /* initialize Buffer Descriptor Lists */
 973        for (i = 0; i < chip->bdbars_count; i++)
 974                iputdword(chip, ICH_REG_OFF_BDBAR + chip->ichd[i].reg_offset, chip->ichd[i].bdbar_addr);
 975        return 0;
 976}
 977
 978static int snd_intel8x0m_free(struct intel8x0m *chip)
 979{
 980        unsigned int i;
 981
 982        if (chip->irq < 0)
 983                goto __hw_end;
 984        /* disable interrupts */
 985        for (i = 0; i < chip->bdbars_count; i++)
 986                iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
 987        /* reset channels */
 988        for (i = 0; i < chip->bdbars_count; i++)
 989                iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
 990 __hw_end:
 991        if (chip->irq >= 0)
 992                free_irq(chip->irq, chip);
 993        if (chip->bdbars.area)
 994                snd_dma_free_pages(&chip->bdbars);
 995        if (chip->addr)
 996                pci_iounmap(chip->pci, chip->addr);
 997        if (chip->bmaddr)
 998                pci_iounmap(chip->pci, chip->bmaddr);
 999        pci_release_regions(chip->pci);
1000        pci_disable_device(chip->pci);
1001        kfree(chip);
1002        return 0;
1003}
1004
1005#ifdef CONFIG_PM_SLEEP
1006/*
1007 * power management
1008 */
1009static int intel8x0m_suspend(struct device *dev)
1010{
1011        struct snd_card *card = dev_get_drvdata(dev);
1012        struct intel8x0m *chip = card->private_data;
1013
1014        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
1015        snd_ac97_suspend(chip->ac97);
1016        if (chip->irq >= 0) {
1017                free_irq(chip->irq, chip);
1018                chip->irq = -1;
1019        }
1020        return 0;
1021}
1022
1023static int intel8x0m_resume(struct device *dev)
1024{
1025        struct pci_dev *pci = to_pci_dev(dev);
1026        struct snd_card *card = dev_get_drvdata(dev);
1027        struct intel8x0m *chip = card->private_data;
1028
1029        if (request_irq(pci->irq, snd_intel8x0m_interrupt,
1030                        IRQF_SHARED, KBUILD_MODNAME, chip)) {
1031                dev_err(dev, "unable to grab IRQ %d, disabling device\n",
1032                        pci->irq);
1033                snd_card_disconnect(card);
1034                return -EIO;
1035        }
1036        chip->irq = pci->irq;
1037        snd_intel8x0m_chip_init(chip, 0);
1038        snd_ac97_resume(chip->ac97);
1039
1040        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1041        return 0;
1042}
1043
1044static SIMPLE_DEV_PM_OPS(intel8x0m_pm, intel8x0m_suspend, intel8x0m_resume);
1045#define INTEL8X0M_PM_OPS        &intel8x0m_pm
1046#else
1047#define INTEL8X0M_PM_OPS        NULL
1048#endif /* CONFIG_PM_SLEEP */
1049
1050static void snd_intel8x0m_proc_read(struct snd_info_entry * entry,
1051                                   struct snd_info_buffer *buffer)
1052{
1053        struct intel8x0m *chip = entry->private_data;
1054        unsigned int tmp;
1055
1056        snd_iprintf(buffer, "Intel8x0m\n\n");
1057        if (chip->device_type == DEVICE_ALI)
1058                return;
1059        tmp = igetdword(chip, ICHREG(GLOB_STA));
1060        snd_iprintf(buffer, "Global control        : 0x%08x\n",
1061                    igetdword(chip, ICHREG(GLOB_CNT)));
1062        snd_iprintf(buffer, "Global status         : 0x%08x\n", tmp);
1063        snd_iprintf(buffer, "AC'97 codecs ready    :%s%s%s%s\n",
1064                        tmp & ICH_PCR ? " primary" : "",
1065                        tmp & ICH_SCR ? " secondary" : "",
1066                        tmp & ICH_TCR ? " tertiary" : "",
1067                        (tmp & (ICH_PCR | ICH_SCR | ICH_TCR)) == 0 ? " none" : "");
1068}
1069
1070static void snd_intel8x0m_proc_init(struct intel8x0m *chip)
1071{
1072        snd_card_ro_proc_new(chip->card, "intel8x0m", chip,
1073                             snd_intel8x0m_proc_read);
1074}
1075
1076static int snd_intel8x0m_dev_free(struct snd_device *device)
1077{
1078        struct intel8x0m *chip = device->device_data;
1079        return snd_intel8x0m_free(chip);
1080}
1081
1082struct ich_reg_info {
1083        unsigned int int_sta_mask;
1084        unsigned int offset;
1085};
1086
1087static int snd_intel8x0m_create(struct snd_card *card,
1088                                struct pci_dev *pci,
1089                                unsigned long device_type,
1090                                struct intel8x0m **r_intel8x0m)
1091{
1092        struct intel8x0m *chip;
1093        int err;
1094        unsigned int i;
1095        unsigned int int_sta_masks;
1096        struct ichdev *ichdev;
1097        static struct snd_device_ops ops = {
1098                .dev_free =     snd_intel8x0m_dev_free,
1099        };
1100        static struct ich_reg_info intel_regs[2] = {
1101                { ICH_MIINT, 0 },
1102                { ICH_MOINT, 0x10 },
1103        };
1104        struct ich_reg_info *tbl;
1105
1106        *r_intel8x0m = NULL;
1107
1108        if ((err = pci_enable_device(pci)) < 0)
1109                return err;
1110
1111        chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1112        if (chip == NULL) {
1113                pci_disable_device(pci);
1114                return -ENOMEM;
1115        }
1116        spin_lock_init(&chip->reg_lock);
1117        chip->device_type = device_type;
1118        chip->card = card;
1119        chip->pci = pci;
1120        chip->irq = -1;
1121
1122        if ((err = pci_request_regions(pci, card->shortname)) < 0) {
1123                kfree(chip);
1124                pci_disable_device(pci);
1125                return err;
1126        }
1127
1128        if (device_type == DEVICE_ALI) {
1129                /* ALI5455 has no ac97 region */
1130                chip->bmaddr = pci_iomap(pci, 0, 0);
1131                goto port_inited;
1132        }
1133
1134        if (pci_resource_flags(pci, 2) & IORESOURCE_MEM) /* ICH4 and Nforce */
1135                chip->addr = pci_iomap(pci, 2, 0);
1136        else
1137                chip->addr = pci_iomap(pci, 0, 0);
1138        if (!chip->addr) {
1139                dev_err(card->dev, "AC'97 space ioremap problem\n");
1140                snd_intel8x0m_free(chip);
1141                return -EIO;
1142        }
1143        if (pci_resource_flags(pci, 3) & IORESOURCE_MEM) /* ICH4 */
1144                chip->bmaddr = pci_iomap(pci, 3, 0);
1145        else
1146                chip->bmaddr = pci_iomap(pci, 1, 0);
1147        if (!chip->bmaddr) {
1148                dev_err(card->dev, "Controller space ioremap problem\n");
1149                snd_intel8x0m_free(chip);
1150                return -EIO;
1151        }
1152
1153 port_inited:
1154        /* initialize offsets */
1155        chip->bdbars_count = 2;
1156        tbl = intel_regs;
1157
1158        for (i = 0; i < chip->bdbars_count; i++) {
1159                ichdev = &chip->ichd[i];
1160                ichdev->ichd = i;
1161                ichdev->reg_offset = tbl[i].offset;
1162                ichdev->int_sta_mask = tbl[i].int_sta_mask;
1163                if (device_type == DEVICE_SIS) {
1164                        /* SiS 7013 swaps the registers */
1165                        ichdev->roff_sr = ICH_REG_OFF_PICB;
1166                        ichdev->roff_picb = ICH_REG_OFF_SR;
1167                } else {
1168                        ichdev->roff_sr = ICH_REG_OFF_SR;
1169                        ichdev->roff_picb = ICH_REG_OFF_PICB;
1170                }
1171                if (device_type == DEVICE_ALI)
1172                        ichdev->ali_slot = (ichdev->reg_offset - 0x40) / 0x10;
1173        }
1174        /* SIS7013 handles the pcm data in bytes, others are in words */
1175        chip->pcm_pos_shift = (device_type == DEVICE_SIS) ? 0 : 1;
1176
1177        /* allocate buffer descriptor lists */
1178        /* the start of each lists must be aligned to 8 bytes */
1179        if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1180                                chip->bdbars_count * sizeof(u32) * ICH_MAX_FRAGS * 2,
1181                                &chip->bdbars) < 0) {
1182                snd_intel8x0m_free(chip);
1183                return -ENOMEM;
1184        }
1185        /* tables must be aligned to 8 bytes here, but the kernel pages
1186           are much bigger, so we don't care (on i386) */
1187        int_sta_masks = 0;
1188        for (i = 0; i < chip->bdbars_count; i++) {
1189                ichdev = &chip->ichd[i];
1190                ichdev->bdbar = ((__le32 *)chip->bdbars.area) + (i * ICH_MAX_FRAGS * 2);
1191                ichdev->bdbar_addr = chip->bdbars.addr + (i * sizeof(u32) * ICH_MAX_FRAGS * 2);
1192                int_sta_masks |= ichdev->int_sta_mask;
1193        }
1194        chip->int_sta_reg = ICH_REG_GLOB_STA;
1195        chip->int_sta_mask = int_sta_masks;
1196
1197        pci_set_master(pci);
1198
1199        if ((err = snd_intel8x0m_chip_init(chip, 1)) < 0) {
1200                snd_intel8x0m_free(chip);
1201                return err;
1202        }
1203
1204        if (request_irq(pci->irq, snd_intel8x0m_interrupt, IRQF_SHARED,
1205                        KBUILD_MODNAME, chip)) {
1206                dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1207                snd_intel8x0m_free(chip);
1208                return -EBUSY;
1209        }
1210        chip->irq = pci->irq;
1211
1212        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
1213                snd_intel8x0m_free(chip);
1214                return err;
1215        }
1216
1217        *r_intel8x0m = chip;
1218        return 0;
1219}
1220
1221static struct shortname_table {
1222        unsigned int id;
1223        const char *s;
1224} shortnames[] = {
1225        { PCI_DEVICE_ID_INTEL_82801AA_6, "Intel 82801AA-ICH" },
1226        { PCI_DEVICE_ID_INTEL_82801AB_6, "Intel 82901AB-ICH0" },
1227        { PCI_DEVICE_ID_INTEL_82801BA_6, "Intel 82801BA-ICH2" },
1228        { PCI_DEVICE_ID_INTEL_440MX_6, "Intel 440MX" },
1229        { PCI_DEVICE_ID_INTEL_82801CA_6, "Intel 82801CA-ICH3" },
1230        { PCI_DEVICE_ID_INTEL_82801DB_6, "Intel 82801DB-ICH4" },
1231        { PCI_DEVICE_ID_INTEL_82801EB_6, "Intel ICH5" },
1232        { PCI_DEVICE_ID_INTEL_ICH6_17, "Intel ICH6" },
1233        { PCI_DEVICE_ID_INTEL_ICH7_19, "Intel ICH7" },
1234        { 0x7446, "AMD AMD768" },
1235        { PCI_DEVICE_ID_SI_7013, "SiS SI7013" },
1236        { PCI_DEVICE_ID_NVIDIA_MCP1_MODEM, "NVidia nForce" },
1237        { PCI_DEVICE_ID_NVIDIA_MCP2_MODEM, "NVidia nForce2" },
1238        { PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM, "NVidia nForce2s" },
1239        { PCI_DEVICE_ID_NVIDIA_MCP3_MODEM, "NVidia nForce3" },
1240        { 0x746e, "AMD AMD8111" },
1241#if 0
1242        { 0x5455, "ALi M5455" },
1243#endif
1244        { 0 },
1245};
1246
1247static int snd_intel8x0m_probe(struct pci_dev *pci,
1248                               const struct pci_device_id *pci_id)
1249{
1250        struct snd_card *card;
1251        struct intel8x0m *chip;
1252        int err;
1253        struct shortname_table *name;
1254
1255        err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card);
1256        if (err < 0)
1257                return err;
1258
1259        strcpy(card->driver, "ICH-MODEM");
1260        strcpy(card->shortname, "Intel ICH");
1261        for (name = shortnames; name->id; name++) {
1262                if (pci->device == name->id) {
1263                        strcpy(card->shortname, name->s);
1264                        break;
1265                }
1266        }
1267        strcat(card->shortname," Modem");
1268
1269        if ((err = snd_intel8x0m_create(card, pci, pci_id->driver_data, &chip)) < 0) {
1270                snd_card_free(card);
1271                return err;
1272        }
1273        card->private_data = chip;
1274
1275        if ((err = snd_intel8x0m_mixer(chip, ac97_clock)) < 0) {
1276                snd_card_free(card);
1277                return err;
1278        }
1279        if ((err = snd_intel8x0m_pcm(chip)) < 0) {
1280                snd_card_free(card);
1281                return err;
1282        }
1283        
1284        snd_intel8x0m_proc_init(chip);
1285
1286        sprintf(card->longname, "%s at irq %i",
1287                card->shortname, chip->irq);
1288
1289        if ((err = snd_card_register(card)) < 0) {
1290                snd_card_free(card);
1291                return err;
1292        }
1293        pci_set_drvdata(pci, card);
1294        return 0;
1295}
1296
1297static void snd_intel8x0m_remove(struct pci_dev *pci)
1298{
1299        snd_card_free(pci_get_drvdata(pci));
1300}
1301
1302static struct pci_driver intel8x0m_driver = {
1303        .name = KBUILD_MODNAME,
1304        .id_table = snd_intel8x0m_ids,
1305        .probe = snd_intel8x0m_probe,
1306        .remove = snd_intel8x0m_remove,
1307        .driver = {
1308                .pm = INTEL8X0M_PM_OPS,
1309        },
1310};
1311
1312module_pci_driver(intel8x0m_driver);
1313