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intel8x0.c
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/*
* ALSA driver for Intel ICH (i8x0) chipsets
*
* Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
*
*
* This code also contains alpha support for SiS 735 chipsets provided
* by Mike Pieper <mptei@users.sourceforge.net>. We have no datasheet
* for SiS735, so the code is not fully functional.
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <asm/io.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/ac97_codec.h>
#include <sound/info.h>
#include <sound/initval.h>
/* for 440MX workaround */
#include <asm/pgtable.h>
#include <asm/cacheflush.h>
#ifdef CONFIG_KVM_GUEST
#include <linux/kvm_para.h>
#else
#define kvm_para_available() (0)
#endif
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; SiS 7012; Ali 5455");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Intel,82801AA-ICH},"
"{Intel,82901AB-ICH0},"
"{Intel,82801BA-ICH2},"
"{Intel,82801CA-ICH3},"
"{Intel,82801DB-ICH4},"
"{Intel,ICH5},"
"{Intel,ICH6},"
"{Intel,ICH7},"
"{Intel,6300ESB},"
"{Intel,ESB2},"
"{Intel,MX440},"
"{SiS,SI7012},"
"{NVidia,nForce Audio},"
"{NVidia,nForce2 Audio},"
"{NVidia,nForce3 Audio},"
"{NVidia,MCP04},"
"{NVidia,MCP501},"
"{NVidia,CK804},"
"{NVidia,CK8},"
"{NVidia,CK8S},"
"{AMD,AMD768},"
"{AMD,AMD8111},"
"{ALI,M5455}}");
static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */
static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
static int ac97_clock;
static char *ac97_quirk;
static bool buggy_semaphore;
static int buggy_irq = -1; /* auto-check */
static bool xbox;
static int spdif_aclink = -1;
static int inside_vm = -1;
module_param(index, int, 0444);
MODULE_PARM_DESC(index, "Index value for Intel i8x0 soundcard.");
module_param(id, charp, 0444);
MODULE_PARM_DESC(id, "ID string for Intel i8x0 soundcard.");
module_param(ac97_clock, int, 0444);
MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = whitelist + auto-detect, 1 = force autodetect).");
module_param(ac97_quirk, charp, 0444);
MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware.");
module_param(buggy_semaphore, bool, 0444);
MODULE_PARM_DESC(buggy_semaphore, "Enable workaround for hardwares with problematic codec semaphores.");
module_param(buggy_irq, bint, 0444);
MODULE_PARM_DESC(buggy_irq, "Enable workaround for buggy interrupts on some motherboards.");
module_param(xbox, bool, 0444);
MODULE_PARM_DESC(xbox, "Set to 1 for Xbox, if you have problems with the AC'97 codec detection.");
module_param(spdif_aclink, int, 0444);
MODULE_PARM_DESC(spdif_aclink, "S/PDIF over AC-link.");
module_param(inside_vm, bint, 0444);
MODULE_PARM_DESC(inside_vm, "KVM/Parallels optimization.");
/* just for backward compatibility */
static bool enable;
module_param(enable, bool, 0444);
static int joystick;
module_param(joystick, int, 0444);
/*
* Direct registers
*/
enum { DEVICE_INTEL, DEVICE_INTEL_ICH4, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
#define ICHREG(x) ICH_REG_##x
#define DEFINE_REGSET(name,base) \
enum { \
ICH_REG_##name##_BDBAR = base + 0x0, /* dword - buffer descriptor list base address */ \
ICH_REG_##name##_CIV = base + 0x04, /* byte - current index value */ \
ICH_REG_##name##_LVI = base + 0x05, /* byte - last valid index */ \
ICH_REG_##name##_SR = base + 0x06, /* byte - status register */ \
ICH_REG_##name##_PICB = base + 0x08, /* word - position in current buffer */ \
ICH_REG_##name##_PIV = base + 0x0a, /* byte - prefetched index value */ \
ICH_REG_##name##_CR = base + 0x0b, /* byte - control register */ \
};
/* busmaster blocks */
DEFINE_REGSET(OFF, 0); /* offset */
DEFINE_REGSET(PI, 0x00); /* PCM in */
DEFINE_REGSET(PO, 0x10); /* PCM out */
DEFINE_REGSET(MC, 0x20); /* Mic in */
/* ICH4 busmaster blocks */
DEFINE_REGSET(MC2, 0x40); /* Mic in 2 */
DEFINE_REGSET(PI2, 0x50); /* PCM in 2 */
DEFINE_REGSET(SP, 0x60); /* SPDIF out */
/* values for each busmaster block */
/* LVI */
#define ICH_REG_LVI_MASK 0x1f
/* SR */
#define ICH_FIFOE 0x10 /* FIFO error */
#define ICH_BCIS 0x08 /* buffer completion interrupt status */
#define ICH_LVBCI 0x04 /* last valid buffer completion interrupt */
#define ICH_CELV 0x02 /* current equals last valid */
#define ICH_DCH 0x01 /* DMA controller halted */
/* PIV */
#define ICH_REG_PIV_MASK 0x1f /* mask */
/* CR */
#define ICH_IOCE 0x10 /* interrupt on completion enable */
#define ICH_FEIE 0x08 /* fifo error interrupt enable */
#define ICH_LVBIE 0x04 /* last valid buffer interrupt enable */
#define ICH_RESETREGS 0x02 /* reset busmaster registers */
#define ICH_STARTBM 0x01 /* start busmaster operation */
/* global block */
#define ICH_REG_GLOB_CNT 0x2c /* dword - global control */
#define ICH_PCM_SPDIF_MASK 0xc0000000 /* s/pdif pcm slot mask (ICH4) */
#define ICH_PCM_SPDIF_NONE 0x00000000 /* reserved - undefined */
#define ICH_PCM_SPDIF_78 0x40000000 /* s/pdif pcm on slots 7&8 */
#define ICH_PCM_SPDIF_69 0x80000000 /* s/pdif pcm on slots 6&9 */
#define ICH_PCM_SPDIF_1011 0xc0000000 /* s/pdif pcm on slots 10&11 */
#define ICH_PCM_20BIT 0x00400000 /* 20-bit samples (ICH4) */
#define ICH_PCM_246_MASK 0x00300000 /* chan mask (not all chips) */
#define ICH_PCM_8 0x00300000 /* 8 channels (not all chips) */
#define ICH_PCM_6 0x00200000 /* 6 channels (not all chips) */
#define ICH_PCM_4 0x00100000 /* 4 channels (not all chips) */
#define ICH_PCM_2 0x00000000 /* 2 channels (stereo) */
#define ICH_SIS_PCM_246_MASK 0x000000c0 /* 6 channels (SIS7012) */
#define ICH_SIS_PCM_6 0x00000080 /* 6 channels (SIS7012) */
#define ICH_SIS_PCM_4 0x00000040 /* 4 channels (SIS7012) */
#define ICH_SIS_PCM_2 0x00000000 /* 2 channels (SIS7012) */
#define ICH_TRIE 0x00000040 /* tertiary resume interrupt enable */
#define ICH_SRIE 0x00000020 /* secondary resume interrupt enable */
#define ICH_PRIE 0x00000010 /* primary resume interrupt enable */
#define ICH_ACLINK 0x00000008 /* AClink shut off */
#define ICH_AC97WARM 0x00000004 /* AC'97 warm reset */
#define ICH_AC97COLD 0x00000002 /* AC'97 cold reset */
#define ICH_GIE 0x00000001 /* GPI interrupt enable */
#define ICH_REG_GLOB_STA 0x30 /* dword - global status */
#define ICH_TRI 0x20000000 /* ICH4: tertiary (AC_SDIN2) resume interrupt */
#define ICH_TCR 0x10000000 /* ICH4: tertiary (AC_SDIN2) codec ready */
#define ICH_BCS 0x08000000 /* ICH4: bit clock stopped */
#define ICH_SPINT 0x04000000 /* ICH4: S/PDIF interrupt */
#define ICH_P2INT 0x02000000 /* ICH4: PCM2-In interrupt */
#define ICH_M2INT 0x01000000 /* ICH4: Mic2-In interrupt */
#define ICH_SAMPLE_CAP 0x00c00000 /* ICH4: sample capability bits (RO) */
#define ICH_SAMPLE_16_20 0x00400000 /* ICH4: 16- and 20-bit samples */
#define ICH_MULTICHAN_CAP 0x00300000 /* ICH4: multi-channel capability bits (RO) */
#define ICH_SIS_TRI 0x00080000 /* SIS: tertiary resume irq */
#define ICH_SIS_TCR 0x00040000 /* SIS: tertiary codec ready */
#define ICH_MD3 0x00020000 /* modem power down semaphore */
#define ICH_AD3 0x00010000 /* audio power down semaphore */
#define ICH_RCS 0x00008000 /* read completion status */
#define ICH_BIT3 0x00004000 /* bit 3 slot 12 */
#define ICH_BIT2 0x00002000 /* bit 2 slot 12 */
#define ICH_BIT1 0x00001000 /* bit 1 slot 12 */
#define ICH_SRI 0x00000800 /* secondary (AC_SDIN1) resume interrupt */
#define ICH_PRI 0x00000400 /* primary (AC_SDIN0) resume interrupt */
#define ICH_SCR 0x00000200 /* secondary (AC_SDIN1) codec ready */
#define ICH_PCR 0x00000100 /* primary (AC_SDIN0) codec ready */
#define ICH_MCINT 0x00000080 /* MIC capture interrupt */
#define ICH_POINT 0x00000040 /* playback interrupt */
#define ICH_PIINT 0x00000020 /* capture interrupt */
#define ICH_NVSPINT 0x00000010 /* nforce spdif interrupt */
#define ICH_MOINT 0x00000004 /* modem playback interrupt */
#define ICH_MIINT 0x00000002 /* modem capture interrupt */
#define ICH_GSCI 0x00000001 /* GPI status change interrupt */
#define ICH_REG_ACC_SEMA 0x34 /* byte - codec write semaphore */
#define ICH_CAS 0x01 /* codec access semaphore */
#define ICH_REG_SDM 0x80
#define ICH_DI2L_MASK 0x000000c0 /* PCM In 2, Mic In 2 data in line */
#define ICH_DI2L_SHIFT 6
#define ICH_DI1L_MASK 0x00000030 /* PCM In 1, Mic In 1 data in line */
#define ICH_DI1L_SHIFT 4
#define ICH_SE 0x00000008 /* steer enable */
#define ICH_LDI_MASK 0x00000003 /* last codec read data input */
#define ICH_MAX_FRAGS 32 /* max hw frags */
/*
* registers for Ali5455
*/
/* ALi 5455 busmaster blocks */
DEFINE_REGSET(AL_PI, 0x40); /* ALi PCM in */
DEFINE_REGSET(AL_PO, 0x50); /* Ali PCM out */
DEFINE_REGSET(AL_MC, 0x60); /* Ali Mic in */
DEFINE_REGSET(AL_CDC_SPO, 0x70); /* Ali Codec SPDIF out */
DEFINE_REGSET(AL_CENTER, 0x80); /* Ali center out */
DEFINE_REGSET(AL_LFE, 0x90); /* Ali center out */
DEFINE_REGSET(AL_CLR_SPI, 0xa0); /* Ali Controller SPDIF in */
DEFINE_REGSET(AL_CLR_SPO, 0xb0); /* Ali Controller SPDIF out */
DEFINE_REGSET(AL_I2S, 0xc0); /* Ali I2S in */
DEFINE_REGSET(AL_PI2, 0xd0); /* Ali PCM2 in */
DEFINE_REGSET(AL_MC2, 0xe0); /* Ali Mic2 in */
enum {
ICH_REG_ALI_SCR = 0x00, /* System Control Register */
ICH_REG_ALI_SSR = 0x04, /* System Status Register */
ICH_REG_ALI_DMACR = 0x08, /* DMA Control Register */
ICH_REG_ALI_FIFOCR1 = 0x0c, /* FIFO Control Register 1 */
ICH_REG_ALI_INTERFACECR = 0x10, /* Interface Control Register */
ICH_REG_ALI_INTERRUPTCR = 0x14, /* Interrupt control Register */
ICH_REG_ALI_INTERRUPTSR = 0x18, /* Interrupt Status Register */
ICH_REG_ALI_FIFOCR2 = 0x1c, /* FIFO Control Register 2 */
ICH_REG_ALI_CPR = 0x20, /* Command Port Register */
ICH_REG_ALI_CPR_ADDR = 0x22, /* ac97 addr write */
ICH_REG_ALI_SPR = 0x24, /* Status Port Register */
ICH_REG_ALI_SPR_ADDR = 0x26, /* ac97 addr read */
ICH_REG_ALI_FIFOCR3 = 0x2c, /* FIFO Control Register 3 */
ICH_REG_ALI_TTSR = 0x30, /* Transmit Tag Slot Register */
ICH_REG_ALI_RTSR = 0x34, /* Receive Tag Slot Register */
ICH_REG_ALI_CSPSR = 0x38, /* Command/Status Port Status Register */
ICH_REG_ALI_CAS = 0x3c, /* Codec Write Semaphore Register */
ICH_REG_ALI_HWVOL = 0xf0, /* hardware volume control/status */
ICH_REG_ALI_I2SCR = 0xf4, /* I2S control/status */
ICH_REG_ALI_SPDIFCSR = 0xf8, /* spdif channel status register */
ICH_REG_ALI_SPDIFICS = 0xfc, /* spdif interface control/status */
};
#define ALI_CAS_SEM_BUSY 0x80000000
#define ALI_CPR_ADDR_SECONDARY 0x100
#define ALI_CPR_ADDR_READ 0x80
#define ALI_CSPSR_CODEC_READY 0x08
#define ALI_CSPSR_READ_OK 0x02
#define ALI_CSPSR_WRITE_OK 0x01
/* interrupts for the whole chip by interrupt status register finish */
#define ALI_INT_MICIN2 (1<<26)
#define ALI_INT_PCMIN2 (1<<25)
#define ALI_INT_I2SIN (1<<24)
#define ALI_INT_SPDIFOUT (1<<23) /* controller spdif out INTERRUPT */
#define ALI_INT_SPDIFIN (1<<22)
#define ALI_INT_LFEOUT (1<<21)
#define ALI_INT_CENTEROUT (1<<20)
#define ALI_INT_CODECSPDIFOUT (1<<19)
#define ALI_INT_MICIN (1<<18)
#define ALI_INT_PCMOUT (1<<17)
#define ALI_INT_PCMIN (1<<16)
#define ALI_INT_CPRAIS (1<<7) /* command port available */
#define ALI_INT_SPRAIS (1<<5) /* status port available */
#define ALI_INT_GPIO (1<<1)
#define ALI_INT_MASK (ALI_INT_SPDIFOUT|ALI_INT_CODECSPDIFOUT|\
ALI_INT_MICIN|ALI_INT_PCMOUT|ALI_INT_PCMIN)
#define ICH_ALI_SC_RESET (1<<31) /* master reset */
#define ICH_ALI_SC_AC97_DBL (1<<30)
#define ICH_ALI_SC_CODEC_SPDF (3<<20) /* 1=7/8, 2=6/9, 3=10/11 */
#define ICH_ALI_SC_IN_BITS (3<<18)
#define ICH_ALI_SC_OUT_BITS (3<<16)
#define ICH_ALI_SC_6CH_CFG (3<<14)
#define ICH_ALI_SC_PCM_4 (1<<8)
#define ICH_ALI_SC_PCM_6 (2<<8)
#define ICH_ALI_SC_PCM_246_MASK (3<<8)
#define ICH_ALI_SS_SEC_ID (3<<5)
#define ICH_ALI_SS_PRI_ID (3<<3)
#define ICH_ALI_IF_AC97SP (1<<21)
#define ICH_ALI_IF_MC (1<<20)
#define ICH_ALI_IF_PI (1<<19)
#define ICH_ALI_IF_MC2 (1<<18)
#define ICH_ALI_IF_PI2 (1<<17)
#define ICH_ALI_IF_LINE_SRC (1<<15) /* 0/1 = slot 3/6 */
#define ICH_ALI_IF_MIC_SRC (1<<14) /* 0/1 = slot 3/6 */
#define ICH_ALI_IF_SPDF_SRC (3<<12) /* 00 = PCM, 01 = AC97-in, 10 = spdif-in, 11 = i2s */
#define ICH_ALI_IF_AC97_OUT (3<<8) /* 00 = PCM, 10 = spdif-in, 11 = i2s */
#define ICH_ALI_IF_PO_SPDF (1<<3)
#define ICH_ALI_IF_PO (1<<1)
/*
*
*/
enum {
ICHD_PCMIN,
ICHD_PCMOUT,
ICHD_MIC,
ICHD_MIC2,
ICHD_PCM2IN,
ICHD_SPBAR,
ICHD_LAST = ICHD_SPBAR
};
enum {
NVD_PCMIN,
NVD_PCMOUT,
NVD_MIC,
NVD_SPBAR,
NVD_LAST = NVD_SPBAR
};
enum {
ALID_PCMIN,
ALID_PCMOUT,
ALID_MIC,
ALID_AC97SPDIFOUT,
ALID_SPDIFIN,
ALID_SPDIFOUT,
ALID_LAST = ALID_SPDIFOUT
};
#define get_ichdev(substream) (substream->runtime->private_data)
struct ichdev {
unsigned int ichd; /* ich device number */
unsigned long reg_offset; /* offset to bmaddr */
u32 *bdbar; /* CPU address (32bit) */
unsigned int bdbar_addr; /* PCI bus address (32bit) */
struct snd_pcm_substream *substream;
unsigned int physbuf; /* physical address (32bit) */
unsigned int size;
unsigned int fragsize;
unsigned int fragsize1;
unsigned int position;
unsigned int pos_shift;
unsigned int last_pos;
int frags;
int lvi;
int lvi_frag;
int civ;
int ack;
int ack_reload;
unsigned int ack_bit;
unsigned int roff_sr;
unsigned int roff_picb;
unsigned int int_sta_mask; /* interrupt status mask */
unsigned int ali_slot; /* ALI DMA slot */
struct ac97_pcm *pcm;
int pcm_open_flag;
unsigned int page_attr_changed: 1;
unsigned int suspended: 1;
};
struct intel8x0 {
unsigned int device_type;
int irq;
void __iomem *addr;
void __iomem *bmaddr;
struct pci_dev *pci;
struct snd_card *card;
int pcm_devs;
struct snd_pcm *pcm[6];
struct ichdev ichd[6];
unsigned multi4: 1,
multi6: 1,
multi8 :1,
dra: 1,
smp20bit: 1;
unsigned in_ac97_init: 1,
in_sdin_init: 1;
unsigned in_measurement: 1; /* during ac97 clock measurement */
unsigned fix_nocache: 1; /* workaround for 440MX */
unsigned buggy_irq: 1; /* workaround for buggy mobos */
unsigned xbox: 1; /* workaround for Xbox AC'97 detection */
unsigned buggy_semaphore: 1; /* workaround for buggy codec semaphore */
unsigned inside_vm: 1; /* enable VM optimization */
int spdif_idx; /* SPDIF BAR index; *_SPBAR or -1 if use PCMOUT */
unsigned int sdm_saved; /* SDM reg value */
struct snd_ac97_bus *ac97_bus;
struct snd_ac97 *ac97[3];
unsigned int ac97_sdin[3];
unsigned int max_codecs, ncodecs;
unsigned int *codec_bit;
unsigned int codec_isr_bits;
unsigned int codec_ready_bits;
spinlock_t reg_lock;
u32 bdbars_count;
struct snd_dma_buffer bdbars;
u32 int_sta_reg; /* interrupt status register */
u32 int_sta_mask; /* interrupt status mask */
};
static DEFINE_PCI_DEVICE_TABLE(snd_intel8x0_ids) = {
{ PCI_VDEVICE(INTEL, 0x2415), DEVICE_INTEL }, /* 82801AA */
{ PCI_VDEVICE(INTEL, 0x2425), DEVICE_INTEL }, /* 82901AB */
{ PCI_VDEVICE(INTEL, 0x2445), DEVICE_INTEL }, /* 82801BA */
{ PCI_VDEVICE(INTEL, 0x2485), DEVICE_INTEL }, /* ICH3 */
{ PCI_VDEVICE(INTEL, 0x24c5), DEVICE_INTEL_ICH4 }, /* ICH4 */
{ PCI_VDEVICE(INTEL, 0x24d5), DEVICE_INTEL_ICH4 }, /* ICH5 */
{ PCI_VDEVICE(INTEL, 0x25a6), DEVICE_INTEL_ICH4 }, /* ESB */
{ PCI_VDEVICE(INTEL, 0x266e), DEVICE_INTEL_ICH4 }, /* ICH6 */
{ PCI_VDEVICE(INTEL, 0x27de), DEVICE_INTEL_ICH4 }, /* ICH7 */
{ PCI_VDEVICE(INTEL, 0x2698), DEVICE_INTEL_ICH4 }, /* ESB2 */
{ PCI_VDEVICE(INTEL, 0x7195), DEVICE_INTEL }, /* 440MX */
{ PCI_VDEVICE(SI, 0x7012), DEVICE_SIS }, /* SI7012 */
{ PCI_VDEVICE(NVIDIA, 0x01b1), DEVICE_NFORCE }, /* NFORCE */
{ PCI_VDEVICE(NVIDIA, 0x003a), DEVICE_NFORCE }, /* MCP04 */
{ PCI_VDEVICE(NVIDIA, 0x006a), DEVICE_NFORCE }, /* NFORCE2 */
{ PCI_VDEVICE(NVIDIA, 0x0059), DEVICE_NFORCE }, /* CK804 */
{ PCI_VDEVICE(NVIDIA, 0x008a), DEVICE_NFORCE }, /* CK8 */
{ PCI_VDEVICE(NVIDIA, 0x00da), DEVICE_NFORCE }, /* NFORCE3 */
{ PCI_VDEVICE(NVIDIA, 0x00ea), DEVICE_NFORCE }, /* CK8S */
{ PCI_VDEVICE(NVIDIA, 0x026b), DEVICE_NFORCE }, /* MCP51 */
{ PCI_VDEVICE(AMD, 0x746d), DEVICE_INTEL }, /* AMD8111 */
{ PCI_VDEVICE(AMD, 0x7445), DEVICE_INTEL }, /* AMD768 */
{ PCI_VDEVICE(AL, 0x5455), DEVICE_ALI }, /* Ali5455 */
{ 0, }
};
MODULE_DEVICE_TABLE(pci, snd_intel8x0_ids);
/*
* Lowlevel I/O - busmaster
*/
static inline u8 igetbyte(struct intel8x0 *chip, u32 offset)
{
return ioread8(chip->bmaddr + offset);
}
static inline u16 igetword(struct intel8x0 *chip, u32 offset)
{
return ioread16(chip->bmaddr + offset);
}
static inline u32 igetdword(struct intel8x0 *chip, u32 offset)
{
return ioread32(chip->bmaddr + offset);
}
static inline void iputbyte(struct intel8x0 *chip, u32 offset, u8 val)
{
iowrite8(val, chip->bmaddr + offset);
}
static inline void iputword(struct intel8x0 *chip, u32 offset, u16 val)
{
iowrite16(val, chip->bmaddr + offset);
}
static inline void iputdword(struct intel8x0 *chip, u32 offset, u32 val)
{
iowrite32(val, chip->bmaddr + offset);
}
/*
* Lowlevel I/O - AC'97 registers
*/
static inline u16 iagetword(struct intel8x0 *chip, u32 offset)
{
return ioread16(chip->addr + offset);
}
static inline void iaputword(struct intel8x0 *chip, u32 offset, u16 val)
{
iowrite16(val, chip->addr + offset);
}
/*
* Basic I/O
*/
/*
* access to AC97 codec via normal i/o (for ICH and SIS7012)
*/
static int snd_intel8x0_codec_semaphore(struct intel8x0 *chip, unsigned int codec)
{
int time;
if (codec > 2)
return -EIO;
if (chip->in_sdin_init) {
/* we don't know the ready bit assignment at the moment */
/* so we check any */
codec = chip->codec_isr_bits;
} else {
codec = chip->codec_bit[chip->ac97_sdin[codec]];
}
/* codec ready ? */
if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
return -EIO;
if (chip->buggy_semaphore)
return 0; /* just ignore ... */
/* Anyone holding a semaphore for 1 msec should be shot... */
time = 100;
do {
if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
return 0;
udelay(10);
} while (time--);
/* access to some forbidden (non existent) ac97 registers will not
* reset the semaphore. So even if you don't get the semaphore, still
* continue the access. We don't need the semaphore anyway. */
snd_printk(KERN_ERR "codec_semaphore: semaphore is not ready [0x%x][0x%x]\n",
igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
iagetword(chip, 0); /* clear semaphore flag */
/* I don't care about the semaphore */
return -EBUSY;
}
static void snd_intel8x0_codec_write(struct snd_ac97 *ac97,
unsigned short reg,
unsigned short val)
{
struct intel8x0 *chip = ac97->private_data;
if (snd_intel8x0_codec_semaphore(chip, ac97->num) < 0) {
if (! chip->in_ac97_init)
snd_printk(KERN_ERR "codec_write %d: semaphore is not ready for register 0x%x\n", ac97->num, reg);
}
iaputword(chip, reg + ac97->num * 0x80, val);
}
static unsigned short snd_intel8x0_codec_read(struct snd_ac97 *ac97,
unsigned short reg)
{
struct intel8x0 *chip = ac97->private_data;
unsigned short res;
unsigned int tmp;
if (snd_intel8x0_codec_semaphore(chip, ac97->num) < 0) {
if (! chip->in_ac97_init)
snd_printk(KERN_ERR "codec_read %d: semaphore is not ready for register 0x%x\n", ac97->num, reg);
res = 0xffff;
} else {
res = iagetword(chip, reg + ac97->num * 0x80);
if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
/* reset RCS and preserve other R/WC bits */
iputdword(chip, ICHREG(GLOB_STA), tmp &
~(chip->codec_ready_bits | ICH_GSCI));
if (! chip->in_ac97_init)
snd_printk(KERN_ERR "codec_read %d: read timeout for register 0x%x\n", ac97->num, reg);
res = 0xffff;
}
}
return res;
}
static void snd_intel8x0_codec_read_test(struct intel8x0 *chip,
unsigned int codec)
{
unsigned int tmp;
if (snd_intel8x0_codec_semaphore(chip, codec) >= 0) {
iagetword(chip, codec * 0x80);
if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
/* reset RCS and preserve other R/WC bits */
iputdword(chip, ICHREG(GLOB_STA), tmp &
~(chip->codec_ready_bits | ICH_GSCI));
}
}
}
/*
* access to AC97 for Ali5455
*/
static int snd_intel8x0_ali_codec_ready(struct intel8x0 *chip, int mask)
{
int count = 0;
for (count = 0; count < 0x7f; count++) {
int val = igetbyte(chip, ICHREG(ALI_CSPSR));
if (val & mask)
return 0;
}
if (! chip->in_ac97_init)
snd_printd(KERN_WARNING "intel8x0: AC97 codec ready timeout.\n");
return -EBUSY;
}
static int snd_intel8x0_ali_codec_semaphore(struct intel8x0 *chip)
{
int time = 100;
if (chip->buggy_semaphore)
return 0; /* just ignore ... */
while (--time && (igetdword(chip, ICHREG(ALI_CAS)) & ALI_CAS_SEM_BUSY))
udelay(1);
if (! time && ! chip->in_ac97_init)
snd_printk(KERN_WARNING "ali_codec_semaphore timeout\n");
return snd_intel8x0_ali_codec_ready(chip, ALI_CSPSR_CODEC_READY);
}
static unsigned short snd_intel8x0_ali_codec_read(struct snd_ac97 *ac97, unsigned short reg)
{
struct intel8x0 *chip = ac97->private_data;
unsigned short data = 0xffff;
if (snd_intel8x0_ali_codec_semaphore(chip))
goto __err;
reg |= ALI_CPR_ADDR_READ;
if (ac97->num)
reg |= ALI_CPR_ADDR_SECONDARY;
iputword(chip, ICHREG(ALI_CPR_ADDR), reg);
if (snd_intel8x0_ali_codec_ready(chip, ALI_CSPSR_READ_OK))
goto __err;
data = igetword(chip, ICHREG(ALI_SPR));
__err:
return data;
}
static void snd_intel8x0_ali_codec_write(struct snd_ac97 *ac97, unsigned short reg,
unsigned short val)
{
struct intel8x0 *chip = ac97->private_data;
if (snd_intel8x0_ali_codec_semaphore(chip))
return;
iputword(chip, ICHREG(ALI_CPR), val);
if (ac97->num)
reg |= ALI_CPR_ADDR_SECONDARY;
iputword(chip, ICHREG(ALI_CPR_ADDR), reg);
snd_intel8x0_ali_codec_ready(chip, ALI_CSPSR_WRITE_OK);
}
/*
* DMA I/O
*/
static void snd_intel8x0_setup_periods(struct intel8x0 *chip, struct ichdev *ichdev)
{
int idx;
u32 *bdbar = ichdev->bdbar;
unsigned long port = ichdev->reg_offset;
iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
if (ichdev->size == ichdev->fragsize) {
ichdev->ack_reload = ichdev->ack = 2;
ichdev->fragsize1 = ichdev->fragsize >> 1;
for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
ichdev->fragsize1 >> ichdev->pos_shift);
bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
ichdev->fragsize1 >> ichdev->pos_shift);
}
ichdev->frags = 2;
} else {
ichdev->ack_reload = ichdev->ack = 1;
ichdev->fragsize1 = ichdev->fragsize;
for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {
bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf +
(((idx >> 1) * ichdev->fragsize) %
ichdev->size));
bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
ichdev->fragsize >> ichdev->pos_shift);
#if 0
printk(KERN_DEBUG "bdbar[%i] = 0x%x [0x%x]\n",
idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
#endif
}
ichdev->frags = ichdev->size / ichdev->fragsize;
}
iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
ichdev->civ = 0;
iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
ichdev->position = 0;
#if 0
printk(KERN_DEBUG "lvi_frag = %i, frags = %i, period_size = 0x%x, "
"period_size1 = 0x%x\n",
ichdev->lvi_frag, ichdev->frags, ichdev->fragsize,
ichdev->fragsize1);
#endif
/* clear interrupts */
iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
}
#ifdef __i386__
/*
* Intel 82443MX running a 100MHz processor system bus has a hardware bug,
* which aborts PCI busmaster for audio transfer. A workaround is to set
* the pages as non-cached. For details, see the errata in
* http://download.intel.com/design/chipsets/specupdt/24505108.pdf
*/
static void fill_nocache(void *buf, int size, int nocache)
{
size = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
if (nocache)
set_pages_uc(virt_to_page(buf), size);
else
set_pages_wb(virt_to_page(buf), size);
}
#else
#define fill_nocache(buf, size, nocache) do { ; } while (0)
#endif
/*
* Interrupt handler
*/
static inline void snd_intel8x0_update(struct intel8x0 *chip, struct ichdev *ichdev)
{
unsigned long port = ichdev->reg_offset;
unsigned long flags;
int status, civ, i, step;
int ack = 0;
spin_lock_irqsave(&chip->reg_lock, flags);
status = igetbyte(chip, port + ichdev->roff_sr);
civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
if (!(status & ICH_BCIS)) {
step = 0;
} else if (civ == ichdev->civ) {
// snd_printd("civ same %d\n", civ);
step = 1;
ichdev->civ++;
ichdev->civ &= ICH_REG_LVI_MASK;
} else {
step = civ - ichdev->civ;
if (step < 0)
step += ICH_REG_LVI_MASK + 1;
// if (step != 1)
// snd_printd("step = %d, %d -> %d\n", step, ichdev->civ, civ);
ichdev->civ = civ;
}
ichdev->position += step * ichdev->fragsize1;
if (! chip->in_measurement)
ichdev->position %= ichdev->size;
ichdev->lvi += step;
ichdev->lvi &= ICH_REG_LVI_MASK;
iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
for (i = 0; i < step; i++) {
ichdev->lvi_frag++;
ichdev->lvi_frag %= ichdev->frags;
ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf + ichdev->lvi_frag * ichdev->fragsize1);
#if 0
printk(KERN_DEBUG "new: bdbar[%i] = 0x%x [0x%x], prefetch = %i, "
"all = 0x%x, 0x%x\n",
ichdev->lvi * 2, ichdev->bdbar[ichdev->lvi * 2],
ichdev->bdbar[ichdev->lvi * 2 + 1], inb(ICH_REG_OFF_PIV + port),
inl(port + 4), inb(port + ICH_REG_OFF_CR));
#endif
if (--ichdev->ack == 0) {
ichdev->ack = ichdev->ack_reload;
ack = 1;
}
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (ack && ichdev->substream) {
snd_pcm_period_elapsed(ichdev->substream);
}
iputbyte(chip, port + ichdev->roff_sr,
status & (ICH_FIFOE | ICH_BCIS | ICH_LVBCI));
}
static irqreturn_t snd_intel8x0_interrupt(int irq, void *dev_id)
{
struct intel8x0 *chip = dev_id;
struct ichdev *ichdev;
unsigned int status;
unsigned int i;
status = igetdword(chip, chip->int_sta_reg);
if (status == 0xffffffff) /* we are not yet resumed */
return IRQ_NONE;
if ((status & chip->int_sta_mask) == 0) {
if (status) {
/* ack */
iputdword(chip, chip->int_sta_reg, status);
if (! chip->buggy_irq)
status = 0;
}
return IRQ_RETVAL(status);
}
for (i = 0; i < chip->bdbars_count; i++) {
ichdev = &chip->ichd[i];
if (status & ichdev->int_sta_mask)
snd_intel8x0_update(chip, ichdev);
}
/* ack them */
iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
return IRQ_HANDLED;
}
/*
* PCM part
*/
static int snd_intel8x0_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct intel8x0 *chip = snd_pcm_substream_chip(substream);
struct ichdev *ichdev = get_ichdev(substream);
unsigned char val = 0;
unsigned long port = ichdev->reg_offset;
switch (cmd) {
case SNDRV_PCM_TRIGGER_RESUME:
ichdev->suspended = 0;
/* fallthru */
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
val = ICH_IOCE | ICH_STARTBM;
ichdev->last_pos = ichdev->position;
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
ichdev->suspended = 1;
/* fallthru */
case SNDRV_PCM_TRIGGER_STOP:
val = 0;
break;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
val = ICH_IOCE;
break;
default:
return -EINVAL;
}
iputbyte(chip, port + ICH_REG_OFF_CR, val);
if (cmd == SNDRV_PCM_TRIGGER_STOP) {
/* wait until DMA stopped */
while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
/* reset whole DMA things */
iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
}
return 0;
}
static int snd_intel8x0_ali_trigger(struct snd_pcm_substream *substream, int cmd)
{
struct intel8x0 *chip = snd_pcm_substream_chip(substream);
struct ichdev *ichdev = get_ichdev(substream);
unsigned long port = ichdev->reg_offset;
static int fiforeg[] = {
ICHREG(ALI_FIFOCR1), ICHREG(ALI_FIFOCR2), ICHREG(ALI_FIFOCR3)
};
unsigned int val, fifo;
val = igetdword(chip, ICHREG(ALI_DMACR));
switch (cmd) {
case SNDRV_PCM_TRIGGER_RESUME:
ichdev->suspended = 0;
/* fallthru */
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
/* clear FIFO for synchronization of channels */
fifo = igetdword(chip, fiforeg[ichdev->ali_slot / 4]);
fifo &= ~(0xff << (ichdev->ali_slot % 4));
fifo |= 0x83 << (ichdev->ali_slot % 4);
iputdword(chip, fiforeg[ichdev->ali_slot / 4], fifo);
}
iputbyte(chip, port + ICH_REG_OFF_CR, ICH_IOCE);
val &= ~(1 << (ichdev->ali_slot + 16)); /* clear PAUSE flag */
/* start DMA */
iputdword(chip, ICHREG(ALI_DMACR), val | (1 << ichdev->ali_slot));
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
ichdev->suspended = 1;
/* fallthru */
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
/* pause */
iputdword(chip, ICHREG(ALI_DMACR), val | (1 << (ichdev->ali_slot + 16)));
iputbyte(chip, port + ICH_REG_OFF_CR, 0);
while (igetbyte(chip, port + ICH_REG_OFF_CR))
;
if (cmd == SNDRV_PCM_TRIGGER_PAUSE_PUSH)
break;
/* reset whole DMA things */
iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
/* clear interrupts */
iputbyte(chip, port + ICH_REG_OFF_SR,
igetbyte(chip, port + ICH_REG_OFF_SR) | 0x1e);
iputdword(chip, ICHREG(ALI_INTERRUPTSR),
igetdword(chip, ICHREG(ALI_INTERRUPTSR)) & ichdev->int_sta_mask);
break;
default:
return -EINVAL;
}
return 0;
}
static int snd_intel8x0_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct intel8x0 *chip = snd_pcm_substream_chip(substream);
struct ichdev *ichdev = get_ichdev(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int dbl = params_rate(hw_params) > 48000;
int err;
if (chip->fix_nocache && ichdev->page_attr_changed) {
fill_nocache(runtime->dma_area, runtime->dma_bytes, 0); /* clear */
ichdev->page_attr_changed = 0;
}
err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
if (err < 0)
return err;
if (chip->fix_nocache) {
if (runtime->dma_area && ! ichdev->page_attr_changed) {
fill_nocache(runtime->dma_area, runtime->dma_bytes, 1);
ichdev->page_attr_changed = 1;
}
}
if (ichdev->pcm_open_flag) {
snd_ac97_pcm_close(ichdev->pcm);
ichdev->pcm_open_flag = 0;
}
err = snd_ac97_pcm_open(ichdev->pcm, params_rate(hw_params),
params_channels(hw_params),
ichdev->pcm->r[dbl].slots);
if (err >= 0) {
ichdev->pcm_open_flag = 1;
/* Force SPDIF setting */
if (ichdev->ichd == ICHD_PCMOUT && chip->spdif_idx < 0)
snd_ac97_set_rate(ichdev->pcm->r[0].codec[0], AC97_SPDIF,
params_rate(hw_params));
}
return err;
}
static int snd_intel8x0_hw_free(struct snd_pcm_substream *substream)
{
struct intel8x0 *chip = snd_pcm_substream_chip(substream);
struct ichdev *ichdev = get_ichdev(substream);
if (ichdev->pcm_open_flag) {
snd_ac97_pcm_close(ichdev->pcm);
ichdev->pcm_open_flag = 0;
}
if (chip->fix_nocache && ichdev->page_attr_changed) {
fill_nocache(substream->runtime->dma_area, substream->runtime->dma_bytes, 0);
ichdev->page_attr_changed = 0;
}
return snd_pcm_lib_free_pages(substream);
}
static void snd_intel8x0_setup_pcm_out(struct intel8x0 *chip,
struct snd_pcm_runtime *runtime)
{
unsigned int cnt;
int dbl = runtime->rate > 48000;
spin_lock_irq(&chip->reg_lock);
switch (chip->device_type) {
case DEVICE_ALI:
cnt = igetdword(chip, ICHREG(ALI_SCR));
cnt &= ~ICH_ALI_SC_PCM_246_MASK;
if (runtime->channels == 4 || dbl)
cnt |= ICH_ALI_SC_PCM_4;