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86Box/src/include/86box/snd_ac97.h

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/*
* 86Box A hypervisor and IBM PC system emulator that specializes in
* running old operating systems and software designed for IBM
* PC systems and compatibles from 1981 through fairly recent
* system designs based on the PCI bus.
*
* This file is part of the 86Box distribution.
*
* Definitions for AC'97 audio emulation.
*
*
*
* Authors: RichardG, <richardg867@gmail.com>
*
* Copyright 2021 RichardG.
*/
#ifndef SOUND_AC97_H
#define SOUND_AC97_H
#define AC97_VENDOR_ID(a, b, c, i) ((((a) &0xff) << 24) | (((b) &0xff) << 16) | (((c) &0xff) << 8) | ((i) &0xff))
/* Misc support bits (misc_flags). Most of these are not part of any
registers, but control enabling/disabling of registers and bits. */
#define AC97_MASTER_6B (1 << 0) /* register 02 bits [13,5] (ML5/MR5) */
#define AC97_AUXOUT (1 << 1) /* register 04 */
#define AC97_AUXOUT_6B (1 << 2) /* register 04 bits [13,5] (ML5/MR5) */
#define AC97_MONOOUT (1 << 3) /* register 06 */
#define AC97_MONOOUT_6B (1 << 4) /* register 06 bit 5 (MM5) */
#define AC97_PCBEEP (1 << 5) /* register 0A */
#define AC97_PCBEEP_GEN (1 << 6) /* register 0A bits [12:5] (F[7:0]) */
#define AC97_PHONE (1 << 9) /* register 0C */
#define AC97_VIDEO (1 << 10) /* register 14 */
#define AC97_AUXIN (1 << 11) /* register 16 */
#define AC97_POP (1 << 15) /* register 20 bit 15 (POP) - definition shared with General Purpose bits */
#define AC97_MS (1 << 8) /* register 20 bit 8 (MS) - definition shared with General Purpose bits */
#define AC97_LPBK (1 << 7) /* register 20 bit 7 (LPBK) - definition shared with General Purpose bits */
#define AC97_DSA (1 << 12) /* register 28 bits [5:4] (DSA[1:0]) */
#define AC97_LFE_6B (1 << 13) /* register 36 bit 13 (LFE5) */
#define AC97_CENTER_6B (1 << 14) /* register 36 bit 5 (CNT5) */
#define AC97_SURR_6B (1 << 16) /* register 38 bits [13,5] (LSR5/RSR5) */
/* Reset bits (reset_flags), register 00. */
#define AC97_MICPCM (1 << 0)
#define AC97_MODEMLINE (1 << 1)
#define AC97_TONECTL (1 << 2)
#define AC97_SIMSTEREO (1 << 3)
#define AC97_HPOUT (1 << 4)
#define AC97_LOUDNESS (1 << 5)
#define AC97_DAC_18B (1 << 6)
#define AC97_DAC_20B (1 << 7)
#define AC97_ADC_18B (1 << 8)
#define AC97_ADC_20B (1 << 9)
#define AC97_3D_SHIFT 10
/* Extended Audio ID bits (extid_flags), register 28. */
#define AC97_VRA (1 << 0)
#define AC97_DRA (1 << 1)
#define AC97_SPDIF (1 << 2)
#define AC97_VRM (1 << 3)
#define AC97_CDAC (1 << 6)
#define AC97_SDAC (1 << 7)
#define AC97_LDAC (1 << 8)
#define AC97_AMAP (1 << 9)
#define AC97_REV_2_1 (0 << 10)
#define AC97_REV_2_2 (1 << 10)
#define AC97_REV_2_3 (2 << 10)
#define AC97_REV_MASK (3 << 10)
/* Volume bits. */
#define AC97_MUTE (1 << 15)
#define AC97_MUTE_L (1 << 15)
#define AC97_MUTE_R (1 << 7)
/* General Purpose bits, register 20. */
/* POP already defined */
#define AC97_ST (1 << 14)
#define AC97_3D (1 << 13)
#define AC97_LD (1 << 12)
#define AC97_DRSS_MASK (3 << 10)
#define AC97_MIX (1 << 9)
/* MS already defined */
/* LPBK already defined */
/* Extended Audio Status/Control bits, register 2A. */
#define AC97_SPSA_SHIFT 4
#define AC97_SPSA_MASK 3
#define AC97_MADC (1 << 9)
#define AC97_SPCV (1 << 10)
#define AC97_PRI (1 << 11)
#define AC97_PRJ (1 << 12)
#define AC97_PRK (1 << 13)
#define AC97_PRL (1 << 14)
/* Codec IDs. */
#define AC97_CODEC_AD1881 AC97_VENDOR_ID('A', 'D', 'S', 0x40)
#define AC97_CODEC_AK4540 AC97_VENDOR_ID('A', 'D', 'S', 0x40)
#define AC97_CODEC_ALC100 AC97_VENDOR_ID('A', 'L', 'C', 0x20)
#define AC97_CODEC_CS4297 AC97_VENDOR_ID('C', 'R', 'Y', 0x03)
#define AC97_CODEC_CS4297A AC97_VENDOR_ID('C', 'R', 'Y', 0x11)
#define AC97_CODEC_STAC9708 AC97_VENDOR_ID(0x83, 0x84, 0x76, 0x08)
#define AC97_CODEC_STAC9721 AC97_VENDOR_ID(0x83, 0x84, 0x76, 0x09)
#define AC97_CODEC_TR28023 AC97_VENDOR_ID('T', 'R', 'A', 0x03)
#define AC97_CODEC_WM9701A AC97_VENDOR_ID('W', 'M', 'L', 0x00)
typedef struct ac97_vendor_reg_t {
uint8_t page; /* for paged registers [60:6F], 0 otherwise */
uint8_t index;
uint16_t value;
uint16_t write_mask;
} ac97_vendor_reg_t;
typedef struct ac97_codec_t {
int model;
uint16_t regs[64];
uint8_t codec_id;
uint8_t vendor_reg_page_max;
const ac97_vendor_reg_t *vendor_regs;
uint16_t *vendor_reg_pages;
} ac97_codec_t;
extern uint16_t ac97_codec_readw(ac97_codec_t *dev, uint8_t reg);
extern void ac97_codec_writew(ac97_codec_t *dev, uint8_t reg, uint16_t val);
extern void ac97_codec_reset(void *priv);
extern void ac97_codec_getattn(void *priv, uint8_t reg, int *l, int *r);
extern uint32_t ac97_codec_getrate(void *priv, uint8_t reg);
extern const device_t *ac97_codec_get(uint32_t id);
extern void ac97_via_set_slot(void *priv, int slot, int irq_pin);
extern uint8_t ac97_via_read_status(void *priv, uint8_t modem);
extern void ac97_via_write_control(void *priv, uint8_t modem, uint8_t val);
extern void ac97_via_remap_audio_sgd(void *priv, uint16_t new_io_base, uint8_t enable);
extern void ac97_via_remap_modem_sgd(void *priv, uint16_t new_io_base, uint8_t enable);
extern void ac97_via_remap_audio_codec(void *priv, uint16_t new_io_base, uint8_t enable);
extern void ac97_via_remap_modem_codec(void *priv, uint16_t new_io_base, uint8_t enable);
extern ac97_codec_t **ac97_codec;
extern ac97_codec_t **ac97_modem_codec;
extern int ac97_codec_count;
extern int ac97_modem_codec_count;
extern int ac97_codec_id;
extern int ac97_modem_codec_id;
#ifdef EMU_DEVICE_H
extern const device_t ad1881_device;
extern const device_t ak4540_device;
extern const device_t alc100_device;
extern const device_t cs4297_device;
extern const device_t cs4297a_device;
# define ct1297_device tr28023_device
extern const device_t stac9708_device;
extern const device_t stac9721_device;
extern const device_t tr28023_device;
extern const device_t wm9701a_device;
extern const device_t ac97_via_device;
#endif
#endif /*SOUND_AC97_H*/
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