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qemu-e2k/hw/ac97.c
Stefan Weil 7ba4cbbf2e ac97: Remove unused local variables 
cppcheck report:
hw/ac97.c:1004: style:
 Variable 'written' is assigned a value that is never used
hw/ac97.c:1072: style:
 Variable 'written' is assigned a value that is never used

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-05-08 10:59:05 +01:00

1348 lines
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/*
* Copyright (C) 2006 InnoTek Systemberatung GmbH
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file 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,
* in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
* distribution. VirtualBox OSE is distributed in the hope that it will
* be useful, but WITHOUT ANY WARRANTY of any kind.
*
* If you received this file as part of a commercial VirtualBox
* distribution, then only the terms of your commercial VirtualBox
* license agreement apply instead of the previous paragraph.
*/
#include "hw.h"
#include "audiodev.h"
#include "audio/audio.h"
#include "pci.h"
enum {
AC97_Reset = 0x00,
AC97_Master_Volume_Mute = 0x02,
AC97_Headphone_Volume_Mute = 0x04,
AC97_Master_Volume_Mono_Mute = 0x06,
AC97_Master_Tone_RL = 0x08,
AC97_PC_BEEP_Volume_Mute = 0x0A,
AC97_Phone_Volume_Mute = 0x0C,
AC97_Mic_Volume_Mute = 0x0E,
AC97_Line_In_Volume_Mute = 0x10,
AC97_CD_Volume_Mute = 0x12,
AC97_Video_Volume_Mute = 0x14,
AC97_Aux_Volume_Mute = 0x16,
AC97_PCM_Out_Volume_Mute = 0x18,
AC97_Record_Select = 0x1A,
AC97_Record_Gain_Mute = 0x1C,
AC97_Record_Gain_Mic_Mute = 0x1E,
AC97_General_Purpose = 0x20,
AC97_3D_Control = 0x22,
AC97_AC_97_RESERVED = 0x24,
AC97_Powerdown_Ctrl_Stat = 0x26,
AC97_Extended_Audio_ID = 0x28,
AC97_Extended_Audio_Ctrl_Stat = 0x2A,
AC97_PCM_Front_DAC_Rate = 0x2C,
AC97_PCM_Surround_DAC_Rate = 0x2E,
AC97_PCM_LFE_DAC_Rate = 0x30,
AC97_PCM_LR_ADC_Rate = 0x32,
AC97_MIC_ADC_Rate = 0x34,
AC97_6Ch_Vol_C_LFE_Mute = 0x36,
AC97_6Ch_Vol_L_R_Surround_Mute = 0x38,
AC97_Vendor_Reserved = 0x58,
AC97_Vendor_ID1 = 0x7c,
AC97_Vendor_ID2 = 0x7e
};
#define SOFT_VOLUME
#define SR_FIFOE 16 /* rwc */
#define SR_BCIS 8 /* rwc */
#define SR_LVBCI 4 /* rwc */
#define SR_CELV 2 /* ro */
#define SR_DCH 1 /* ro */
#define SR_VALID_MASK ((1 << 5) - 1)
#define SR_WCLEAR_MASK (SR_FIFOE | SR_BCIS | SR_LVBCI)
#define SR_RO_MASK (SR_DCH | SR_CELV)
#define SR_INT_MASK (SR_FIFOE | SR_BCIS | SR_LVBCI)
#define CR_IOCE 16 /* rw */
#define CR_FEIE 8 /* rw */
#define CR_LVBIE 4 /* rw */
#define CR_RR 2 /* rw */
#define CR_RPBM 1 /* rw */
#define CR_VALID_MASK ((1 << 5) - 1)
#define CR_DONT_CLEAR_MASK (CR_IOCE | CR_FEIE | CR_LVBIE)
#define GC_WR 4 /* rw */
#define GC_CR 2 /* rw */
#define GC_VALID_MASK ((1 << 6) - 1)
#define GS_MD3 (1<<17) /* rw */
#define GS_AD3 (1<<16) /* rw */
#define GS_RCS (1<<15) /* rwc */
#define GS_B3S12 (1<<14) /* ro */
#define GS_B2S12 (1<<13) /* ro */
#define GS_B1S12 (1<<12) /* ro */
#define GS_S1R1 (1<<11) /* rwc */
#define GS_S0R1 (1<<10) /* rwc */
#define GS_S1CR (1<<9) /* ro */
#define GS_S0CR (1<<8) /* ro */
#define GS_MINT (1<<7) /* ro */
#define GS_POINT (1<<6) /* ro */
#define GS_PIINT (1<<5) /* ro */
#define GS_RSRVD ((1<<4)|(1<<3))
#define GS_MOINT (1<<2) /* ro */
#define GS_MIINT (1<<1) /* ro */
#define GS_GSCI 1 /* rwc */
#define GS_RO_MASK (GS_B3S12| \
GS_B2S12| \
GS_B1S12| \
GS_S1CR| \
GS_S0CR| \
GS_MINT| \
GS_POINT| \
GS_PIINT| \
GS_RSRVD| \
GS_MOINT| \
GS_MIINT)
#define GS_VALID_MASK ((1 << 18) - 1)
#define GS_WCLEAR_MASK (GS_RCS|GS_S1R1|GS_S0R1|GS_GSCI)
#define BD_IOC (1<<31)
#define BD_BUP (1<<30)
#define EACS_VRA 1
#define EACS_VRM 8
#define VOL_MASK 0x1f
#define MUTE_SHIFT 15
#define REC_MASK 7
enum {
REC_MIC = 0,
REC_CD,
REC_VIDEO,
REC_AUX,
REC_LINE_IN,
REC_STEREO_MIX,
REC_MONO_MIX,
REC_PHONE
};
typedef struct BD {
uint32_t addr;
uint32_t ctl_len;
} BD;
typedef struct AC97BusMasterRegs {
uint32_t bdbar; /* rw 0 */
uint8_t civ; /* ro 0 */
uint8_t lvi; /* rw 0 */
uint16_t sr; /* rw 1 */
uint16_t picb; /* ro 0 */
uint8_t piv; /* ro 0 */
uint8_t cr; /* rw 0 */
unsigned int bd_valid;
BD bd;
} AC97BusMasterRegs;
typedef struct AC97LinkState {
PCIDevice dev;
QEMUSoundCard card;
uint32_t glob_cnt;
uint32_t glob_sta;
uint32_t cas;
uint32_t last_samp;
AC97BusMasterRegs bm_regs[3];
uint8_t mixer_data[256];
SWVoiceIn *voice_pi;
SWVoiceOut *voice_po;
SWVoiceIn *voice_mc;
int invalid_freq[3];
uint8_t silence[128];
uint32_t base[2];
int bup_flag;
} AC97LinkState;
enum {
BUP_SET = 1,
BUP_LAST = 2
};
#ifdef DEBUG_AC97
#define dolog(...) AUD_log ("ac97", __VA_ARGS__)
#else
#define dolog(...)
#endif
#define MKREGS(prefix, start) \
enum { \
prefix ## _BDBAR = start, \
prefix ## _CIV = start + 4, \
prefix ## _LVI = start + 5, \
prefix ## _SR = start + 6, \
prefix ## _PICB = start + 8, \
prefix ## _PIV = start + 10, \
prefix ## _CR = start + 11 \
}
enum {
PI_INDEX = 0,
PO_INDEX,
MC_INDEX,
LAST_INDEX
};
MKREGS (PI, PI_INDEX * 16);
MKREGS (PO, PO_INDEX * 16);
MKREGS (MC, MC_INDEX * 16);
enum {
GLOB_CNT = 0x2c,
GLOB_STA = 0x30,
CAS = 0x34
};
#define GET_BM(index) (((index) >> 4) & 3)
static void po_callback (void *opaque, int free);
static void pi_callback (void *opaque, int avail);
static void mc_callback (void *opaque, int avail);
static void warm_reset (AC97LinkState *s)
{
(void) s;
}
static void cold_reset (AC97LinkState * s)
{
(void) s;
}
static void fetch_bd (AC97LinkState *s, AC97BusMasterRegs *r)
{
uint8_t b[8];
cpu_physical_memory_read (r->bdbar + r->civ * 8, b, 8);
r->bd_valid = 1;
r->bd.addr = le32_to_cpu (*(uint32_t *) &b[0]) & ~3;
r->bd.ctl_len = le32_to_cpu (*(uint32_t *) &b[4]);
r->picb = r->bd.ctl_len & 0xffff;
dolog ("bd %2d addr=%#x ctl=%#06x len=%#x(%d bytes)\n",
r->civ, r->bd.addr, r->bd.ctl_len >> 16,
r->bd.ctl_len & 0xffff,
(r->bd.ctl_len & 0xffff) << 1);
}
static void update_sr (AC97LinkState *s, AC97BusMasterRegs *r, uint32_t new_sr)
{
int event = 0;
int level = 0;
uint32_t new_mask = new_sr & SR_INT_MASK;
uint32_t old_mask = r->sr & SR_INT_MASK;
uint32_t masks[] = {GS_PIINT, GS_POINT, GS_MINT};
if (new_mask ^ old_mask) {
/** @todo is IRQ deasserted when only one of status bits is cleared? */
if (!new_mask) {
event = 1;
level = 0;
}
else {
if ((new_mask & SR_LVBCI) && (r->cr & CR_LVBIE)) {
event = 1;
level = 1;
}
if ((new_mask & SR_BCIS) && (r->cr & CR_IOCE)) {
event = 1;
level = 1;
}
}
}
r->sr = new_sr;
dolog ("IOC%d LVB%d sr=%#x event=%d level=%d\n",
r->sr & SR_BCIS, r->sr & SR_LVBCI,
r->sr,
event, level);
if (!event)
return;
if (level) {
s->glob_sta |= masks[r - s->bm_regs];
dolog ("set irq level=1\n");
qemu_set_irq (s->dev.irq[0], 1);
}
else {
s->glob_sta &= ~masks[r - s->bm_regs];
dolog ("set irq level=0\n");
qemu_set_irq (s->dev.irq[0], 0);
}
}
static void voice_set_active (AC97LinkState *s, int bm_index, int on)
{
switch (bm_index) {
case PI_INDEX:
AUD_set_active_in (s->voice_pi, on);
break;
case PO_INDEX:
AUD_set_active_out (s->voice_po, on);
break;
case MC_INDEX:
AUD_set_active_in (s->voice_mc, on);
break;
default:
AUD_log ("ac97", "invalid bm_index(%d) in voice_set_active", bm_index);
break;
}
}
static void reset_bm_regs (AC97LinkState *s, AC97BusMasterRegs *r)
{
dolog ("reset_bm_regs\n");
r->bdbar = 0;
r->civ = 0;
r->lvi = 0;
/** todo do we need to do that? */
update_sr (s, r, SR_DCH);
r->picb = 0;
r->piv = 0;
r->cr = r->cr & CR_DONT_CLEAR_MASK;
r->bd_valid = 0;
voice_set_active (s, r - s->bm_regs, 0);
memset (s->silence, 0, sizeof (s->silence));
}
static void mixer_store (AC97LinkState *s, uint32_t i, uint16_t v)
{
if (i + 2 > sizeof (s->mixer_data)) {
dolog ("mixer_store: index %d out of bounds %zd\n",
i, sizeof (s->mixer_data));
return;
}
s->mixer_data[i + 0] = v & 0xff;
s->mixer_data[i + 1] = v >> 8;
}
static uint16_t mixer_load (AC97LinkState *s, uint32_t i)
{
uint16_t val = 0xffff;
if (i + 2 > sizeof (s->mixer_data)) {
dolog ("mixer_store: index %d out of bounds %zd\n",
i, sizeof (s->mixer_data));
}
else {
val = s->mixer_data[i + 0] | (s->mixer_data[i + 1] << 8);
}
return val;
}
static void open_voice (AC97LinkState *s, int index, int freq)
{
struct audsettings as;
as.freq = freq;
as.nchannels = 2;
as.fmt = AUD_FMT_S16;
as.endianness = 0;
if (freq > 0) {
s->invalid_freq[index] = 0;
switch (index) {
case PI_INDEX:
s->voice_pi = AUD_open_in (
&s->card,
s->voice_pi,
"ac97.pi",
s,
pi_callback,
&as
);
break;
case PO_INDEX:
s->voice_po = AUD_open_out (
&s->card,
s->voice_po,
"ac97.po",
s,
po_callback,
&as
);
break;
case MC_INDEX:
s->voice_mc = AUD_open_in (
&s->card,
s->voice_mc,
"ac97.mc",
s,
mc_callback,
&as
);
break;
}
}
else {
s->invalid_freq[index] = freq;
switch (index) {
case PI_INDEX:
AUD_close_in (&s->card, s->voice_pi);
s->voice_pi = NULL;
break;
case PO_INDEX:
AUD_close_out (&s->card, s->voice_po);
s->voice_po = NULL;
break;
case MC_INDEX:
AUD_close_in (&s->card, s->voice_mc);
s->voice_mc = NULL;
break;
}
}
}
static void reset_voices (AC97LinkState *s, uint8_t active[LAST_INDEX])
{
uint16_t freq;
freq = mixer_load (s, AC97_PCM_LR_ADC_Rate);
open_voice (s, PI_INDEX, freq);
AUD_set_active_in (s->voice_pi, active[PI_INDEX]);
freq = mixer_load (s, AC97_PCM_Front_DAC_Rate);
open_voice (s, PO_INDEX, freq);
AUD_set_active_out (s->voice_po, active[PO_INDEX]);
freq = mixer_load (s, AC97_MIC_ADC_Rate);
open_voice (s, MC_INDEX, freq);
AUD_set_active_in (s->voice_mc, active[MC_INDEX]);
}
#ifdef USE_MIXER
static void set_volume (AC97LinkState *s, int index,
audmixerctl_t mt, uint32_t val)
{
int mute = (val >> MUTE_SHIFT) & 1;
uint8_t rvol = VOL_MASK - (val & VOL_MASK);
uint8_t lvol = VOL_MASK - ((val >> 8) & VOL_MASK);
rvol = 255 * rvol / VOL_MASK;
lvol = 255 * lvol / VOL_MASK;
#ifdef SOFT_VOLUME
if (index == AC97_Master_Volume_Mute) {
AUD_set_volume_out (s->voice_po, mute, lvol, rvol);
}
else {
AUD_set_volume (mt, &mute, &lvol, &rvol);
}
#else
AUD_set_volume (mt, &mute, &lvol, &rvol);
#endif
rvol = VOL_MASK - ((VOL_MASK * rvol) / 255);
lvol = VOL_MASK - ((VOL_MASK * lvol) / 255);
mixer_store (s, index, val);
}
static audrecsource_t ac97_to_aud_record_source (uint8_t i)
{
switch (i) {
case REC_MIC:
return AUD_REC_MIC;
case REC_CD:
return AUD_REC_CD;
case REC_VIDEO:
return AUD_REC_VIDEO;
case REC_AUX:
return AUD_REC_AUX;
case REC_LINE_IN:
return AUD_REC_LINE_IN;
case REC_PHONE:
return AUD_REC_PHONE;
default:
dolog ("Unknown record source %d, using MIC\n", i);
return AUD_REC_MIC;
}
}
static uint8_t aud_to_ac97_record_source (audrecsource_t rs)
{
switch (rs) {
case AUD_REC_MIC:
return REC_MIC;
case AUD_REC_CD:
return REC_CD;
case AUD_REC_VIDEO:
return REC_VIDEO;
case AUD_REC_AUX:
return REC_AUX;
case AUD_REC_LINE_IN:
return REC_LINE_IN;
case AUD_REC_PHONE:
return REC_PHONE;
default:
dolog ("Unknown audio recording source %d using MIC\n", rs);
return REC_MIC;
}
}
static void record_select (AC97LinkState *s, uint32_t val)
{
uint8_t rs = val & REC_MASK;
uint8_t ls = (val >> 8) & REC_MASK;
audrecsource_t ars = ac97_to_aud_record_source (rs);
audrecsource_t als = ac97_to_aud_record_source (ls);
AUD_set_record_source (&als, &ars);
rs = aud_to_ac97_record_source (ars);
ls = aud_to_ac97_record_source (als);
mixer_store (s, AC97_Record_Select, rs | (ls << 8));
}
#endif
static void mixer_reset (AC97LinkState *s)
{
uint8_t active[LAST_INDEX];
dolog ("mixer_reset\n");
memset (s->mixer_data, 0, sizeof (s->mixer_data));
memset (active, 0, sizeof (active));
mixer_store (s, AC97_Reset , 0x0000); /* 6940 */
mixer_store (s, AC97_Master_Volume_Mono_Mute , 0x8000);
mixer_store (s, AC97_PC_BEEP_Volume_Mute , 0x0000);
mixer_store (s, AC97_Phone_Volume_Mute , 0x8008);
mixer_store (s, AC97_Mic_Volume_Mute , 0x8008);
mixer_store (s, AC97_CD_Volume_Mute , 0x8808);
mixer_store (s, AC97_Aux_Volume_Mute , 0x8808);
mixer_store (s, AC97_Record_Gain_Mic_Mute , 0x8000);
mixer_store (s, AC97_General_Purpose , 0x0000);
mixer_store (s, AC97_3D_Control , 0x0000);
mixer_store (s, AC97_Powerdown_Ctrl_Stat , 0x000f);
/*
* Sigmatel 9700 (STAC9700)
*/
mixer_store (s, AC97_Vendor_ID1 , 0x8384);
mixer_store (s, AC97_Vendor_ID2 , 0x7600); /* 7608 */
mixer_store (s, AC97_Extended_Audio_ID , 0x0809);
mixer_store (s, AC97_Extended_Audio_Ctrl_Stat, 0x0009);
mixer_store (s, AC97_PCM_Front_DAC_Rate , 0xbb80);
mixer_store (s, AC97_PCM_Surround_DAC_Rate , 0xbb80);
mixer_store (s, AC97_PCM_LFE_DAC_Rate , 0xbb80);
mixer_store (s, AC97_PCM_LR_ADC_Rate , 0xbb80);
mixer_store (s, AC97_MIC_ADC_Rate , 0xbb80);
#ifdef USE_MIXER
record_select (s, 0);
set_volume (s, AC97_Master_Volume_Mute, AUD_MIXER_VOLUME , 0x8000);
set_volume (s, AC97_PCM_Out_Volume_Mute, AUD_MIXER_PCM , 0x8808);
set_volume (s, AC97_Line_In_Volume_Mute, AUD_MIXER_LINE_IN, 0x8808);
#endif
reset_voices (s, active);
}
/**
* Native audio mixer
* I/O Reads
*/
static uint32_t nam_readb (void *opaque, uint32_t addr)
{
AC97LinkState *s = opaque;
dolog ("U nam readb %#x\n", addr);
s->cas = 0;
return ~0U;
}
static uint32_t nam_readw (void *opaque, uint32_t addr)
{
AC97LinkState *s = opaque;
uint32_t val = ~0U;
uint32_t index = addr - s->base[0];
s->cas = 0;
val = mixer_load (s, index);
return val;
}
static uint32_t nam_readl (void *opaque, uint32_t addr)
{
AC97LinkState *s = opaque;
dolog ("U nam readl %#x\n", addr);
s->cas = 0;
return ~0U;
}
/**
* Native audio mixer
* I/O Writes
*/
static void nam_writeb (void *opaque, uint32_t addr, uint32_t val)
{
AC97LinkState *s = opaque;
dolog ("U nam writeb %#x <- %#x\n", addr, val);
s->cas = 0;
}
static void nam_writew (void *opaque, uint32_t addr, uint32_t val)
{
AC97LinkState *s = opaque;
uint32_t index = addr - s->base[0];
s->cas = 0;
switch (index) {
case AC97_Reset:
mixer_reset (s);
break;
case AC97_Powerdown_Ctrl_Stat:
val &= ~0xf;
val |= mixer_load (s, index) & 0xf;
mixer_store (s, index, val);
break;
#ifdef USE_MIXER
case AC97_Master_Volume_Mute:
set_volume (s, index, AUD_MIXER_VOLUME, val);
break;
case AC97_PCM_Out_Volume_Mute:
set_volume (s, index, AUD_MIXER_PCM, val);
break;
case AC97_Line_In_Volume_Mute:
set_volume (s, index, AUD_MIXER_LINE_IN, val);
break;
case AC97_Record_Select:
record_select (s, val);
break;
#endif
case AC97_Vendor_ID1:
case AC97_Vendor_ID2:
dolog ("Attempt to write vendor ID to %#x\n", val);
break;
case AC97_Extended_Audio_ID:
dolog ("Attempt to write extended audio ID to %#x\n", val);
break;
case AC97_Extended_Audio_Ctrl_Stat:
if (!(val & EACS_VRA)) {
mixer_store (s, AC97_PCM_Front_DAC_Rate, 0xbb80);
mixer_store (s, AC97_PCM_LR_ADC_Rate, 0xbb80);
open_voice (s, PI_INDEX, 48000);
open_voice (s, PO_INDEX, 48000);
}
if (!(val & EACS_VRM)) {
mixer_store (s, AC97_MIC_ADC_Rate, 0xbb80);
open_voice (s, MC_INDEX, 48000);
}
dolog ("Setting extended audio control to %#x\n", val);
mixer_store (s, AC97_Extended_Audio_Ctrl_Stat, val);
break;
case AC97_PCM_Front_DAC_Rate:
if (mixer_load (s, AC97_Extended_Audio_Ctrl_Stat) & EACS_VRA) {
mixer_store (s, index, val);
dolog ("Set front DAC rate to %d\n", val);
open_voice (s, PO_INDEX, val);
}
else {
dolog ("Attempt to set front DAC rate to %d, "
"but VRA is not set\n",
val);
}
break;
case AC97_MIC_ADC_Rate:
if (mixer_load (s, AC97_Extended_Audio_Ctrl_Stat) & EACS_VRM) {
mixer_store (s, index, val);
dolog ("Set MIC ADC rate to %d\n", val);
open_voice (s, MC_INDEX, val);
}
else {
dolog ("Attempt to set MIC ADC rate to %d, "
"but VRM is not set\n",
val);
}
break;
case AC97_PCM_LR_ADC_Rate:
if (mixer_load (s, AC97_Extended_Audio_Ctrl_Stat) & EACS_VRA) {
mixer_store (s, index, val);
dolog ("Set front LR ADC rate to %d\n", val);
open_voice (s, PI_INDEX, val);
}
else {
dolog ("Attempt to set LR ADC rate to %d, but VRA is not set\n",
val);
}
break;
default:
dolog ("U nam writew %#x <- %#x\n", addr, val);
mixer_store (s, index, val);
break;
}
}
static void nam_writel (void *opaque, uint32_t addr, uint32_t val)
{
AC97LinkState *s = opaque;
dolog ("U nam writel %#x <- %#x\n", addr, val);
s->cas = 0;
}
/**
* Native audio bus master
* I/O Reads
*/
static uint32_t nabm_readb (void *opaque, uint32_t addr)
{
AC97LinkState *s = opaque;
AC97BusMasterRegs *r = NULL;
uint32_t index = addr - s->base[1];
uint32_t val = ~0U;
switch (index) {
case CAS:
dolog ("CAS %d\n", s->cas);
val = s->cas;
s->cas = 1;
break;
case PI_CIV:
case PO_CIV:
case MC_CIV:
r = &s->bm_regs[GET_BM (index)];
val = r->civ;
dolog ("CIV[%d] -> %#x\n", GET_BM (index), val);
break;
case PI_LVI:
case PO_LVI:
case MC_LVI:
r = &s->bm_regs[GET_BM (index)];
val = r->lvi;
dolog ("LVI[%d] -> %#x\n", GET_BM (index), val);
break;
case PI_PIV:
case PO_PIV:
case MC_PIV:
r = &s->bm_regs[GET_BM (index)];
val = r->piv;
dolog ("PIV[%d] -> %#x\n", GET_BM (index), val);
break;
case PI_CR:
case PO_CR:
case MC_CR:
r = &s->bm_regs[GET_BM (index)];
val = r->cr;
dolog ("CR[%d] -> %#x\n", GET_BM (index), val);
break;
case PI_SR:
case PO_SR:
case MC_SR:
r = &s->bm_regs[GET_BM (index)];
val = r->sr & 0xff;
dolog ("SRb[%d] -> %#x\n", GET_BM (index), val);
break;
default:
dolog ("U nabm readb %#x -> %#x\n", addr, val);
break;
}
return val;
}
static uint32_t nabm_readw (void *opaque, uint32_t addr)
{
AC97LinkState *s = opaque;
AC97BusMasterRegs *r = NULL;
uint32_t index = addr - s->base[1];
uint32_t val = ~0U;
switch (index) {
case PI_SR:
case PO_SR:
case MC_SR:
r = &s->bm_regs[GET_BM (index)];
val = r->sr;
dolog ("SR[%d] -> %#x\n", GET_BM (index), val);
break;
case PI_PICB:
case PO_PICB:
case MC_PICB:
r = &s->bm_regs[GET_BM (index)];
val = r->picb;
dolog ("PICB[%d] -> %#x\n", GET_BM (index), val);
break;
default:
dolog ("U nabm readw %#x -> %#x\n", addr, val);
break;
}
return val;
}
static uint32_t nabm_readl (void *opaque, uint32_t addr)
{
AC97LinkState *s = opaque;
AC97BusMasterRegs *r = NULL;
uint32_t index = addr - s->base[1];
uint32_t val = ~0U;
switch (index) {
case PI_BDBAR:
case PO_BDBAR:
case MC_BDBAR:
r = &s->bm_regs[GET_BM (index)];
val = r->bdbar;
dolog ("BMADDR[%d] -> %#x\n", GET_BM (index), val);
break;
case PI_CIV:
case PO_CIV:
case MC_CIV:
r = &s->bm_regs[GET_BM (index)];
val = r->civ | (r->lvi << 8) | (r->sr << 16);
dolog ("CIV LVI SR[%d] -> %#x, %#x, %#x\n", GET_BM (index),
r->civ, r->lvi, r->sr);
break;
case PI_PICB:
case PO_PICB:
case MC_PICB:
r = &s->bm_regs[GET_BM (index)];
val = r->picb | (r->piv << 16) | (r->cr << 24);
dolog ("PICB PIV CR[%d] -> %#x %#x %#x %#x\n", GET_BM (index),
val, r->picb, r->piv, r->cr);
break;
case GLOB_CNT:
val = s->glob_cnt;
dolog ("glob_cnt -> %#x\n", val);
break;
case GLOB_STA:
val = s->glob_sta | GS_S0CR;
dolog ("glob_sta -> %#x\n", val);
break;
default:
dolog ("U nabm readl %#x -> %#x\n", addr, val);
break;
}
return val;
}
/**
* Native audio bus master
* I/O Writes
*/
static void nabm_writeb (void *opaque, uint32_t addr, uint32_t val)
{
AC97LinkState *s = opaque;
AC97BusMasterRegs *r = NULL;
uint32_t index = addr - s->base[1];
switch (index) {
case PI_LVI:
case PO_LVI:
case MC_LVI:
r = &s->bm_regs[GET_BM (index)];
if ((r->cr & CR_RPBM) && (r->sr & SR_DCH)) {
r->sr &= ~(SR_DCH | SR_CELV);
r->civ = r->piv;
r->piv = (r->piv + 1) % 32;
fetch_bd (s, r);
}
r->lvi = val % 32;
dolog ("LVI[%d] <- %#x\n", GET_BM (index), val);
break;
case PI_CR:
case PO_CR:
case MC_CR:
r = &s->bm_regs[GET_BM (index)];
if (val & CR_RR) {
reset_bm_regs (s, r);
}
else {
r->cr = val & CR_VALID_MASK;
if (!(r->cr & CR_RPBM)) {
voice_set_active (s, r - s->bm_regs, 0);
r->sr |= SR_DCH;
}
else {
r->civ = r->piv;
r->piv = (r->piv + 1) % 32;
fetch_bd (s, r);
r->sr &= ~SR_DCH;
voice_set_active (s, r - s->bm_regs, 1);
}
}
dolog ("CR[%d] <- %#x (cr %#x)\n", GET_BM (index), val, r->cr);
break;
case PI_SR:
case PO_SR:
case MC_SR:
r = &s->bm_regs[GET_BM (index)];
r->sr |= val & ~(SR_RO_MASK | SR_WCLEAR_MASK);
update_sr (s, r, r->sr & ~(val & SR_WCLEAR_MASK));
dolog ("SR[%d] <- %#x (sr %#x)\n", GET_BM (index), val, r->sr);
break;
default:
dolog ("U nabm writeb %#x <- %#x\n", addr, val);
break;
}
}
static void nabm_writew (void *opaque, uint32_t addr, uint32_t val)
{
AC97LinkState *s = opaque;
AC97BusMasterRegs *r = NULL;
uint32_t index = addr - s->base[1];
switch (index) {
case PI_SR:
case PO_SR:
case MC_SR:
r = &s->bm_regs[GET_BM (index)];
r->sr |= val & ~(SR_RO_MASK | SR_WCLEAR_MASK);
update_sr (s, r, r->sr & ~(val & SR_WCLEAR_MASK));
dolog ("SR[%d] <- %#x (sr %#x)\n", GET_BM (index), val, r->sr);
break;
default:
dolog ("U nabm writew %#x <- %#x\n", addr, val);
break;
}
}
static void nabm_writel (void *opaque, uint32_t addr, uint32_t val)
{
AC97LinkState *s = opaque;
AC97BusMasterRegs *r = NULL;
uint32_t index = addr - s->base[1];
switch (index) {
case PI_BDBAR:
case PO_BDBAR:
case MC_BDBAR:
r = &s->bm_regs[GET_BM (index)];
r->bdbar = val & ~3;
dolog ("BDBAR[%d] <- %#x (bdbar %#x)\n",
GET_BM (index), val, r->bdbar);
break;
case GLOB_CNT:
if (val & GC_WR)
warm_reset (s);
if (val & GC_CR)
cold_reset (s);
if (!(val & (GC_WR | GC_CR)))
s->glob_cnt = val & GC_VALID_MASK;
dolog ("glob_cnt <- %#x (glob_cnt %#x)\n", val, s->glob_cnt);
break;
case GLOB_STA:
s->glob_sta &= ~(val & GS_WCLEAR_MASK);
s->glob_sta |= (val & ~(GS_WCLEAR_MASK | GS_RO_MASK)) & GS_VALID_MASK;
dolog ("glob_sta <- %#x (glob_sta %#x)\n", val, s->glob_sta);
break;
default:
dolog ("U nabm writel %#x <- %#x\n", addr, val);
break;
}
}
static int write_audio (AC97LinkState *s, AC97BusMasterRegs *r,
int max, int *stop)
{
uint8_t tmpbuf[4096];
uint32_t addr = r->bd.addr;
uint32_t temp = r->picb << 1;
uint32_t written = 0;
int to_copy = 0;
temp = audio_MIN (temp, max);
if (!temp) {
*stop = 1;
return 0;
}
while (temp) {
int copied;
to_copy = audio_MIN (temp, sizeof (tmpbuf));
cpu_physical_memory_read (addr, tmpbuf, to_copy);
copied = AUD_write (s->voice_po, tmpbuf, to_copy);
dolog ("write_audio max=%x to_copy=%x copied=%x\n",
max, to_copy, copied);
if (!copied) {
*stop = 1;
break;
}
temp -= copied;
addr += copied;
written += copied;
}
if (!temp) {
if (to_copy < 4) {
dolog ("whoops\n");
s->last_samp = 0;
}
else {
s->last_samp = *(uint32_t *) &tmpbuf[to_copy - 4];
}
}
r->bd.addr = addr;
return written;
}
static void write_bup (AC97LinkState *s, int elapsed)
{
dolog ("write_bup\n");
if (!(s->bup_flag & BUP_SET)) {
if (s->bup_flag & BUP_LAST) {
int i;
uint8_t *p = s->silence;
for (i = 0; i < sizeof (s->silence) / 4; i++, p += 4) {
*(uint32_t *) p = s->last_samp;
}
}
else {
memset (s->silence, 0, sizeof (s->silence));
}
s->bup_flag |= BUP_SET;
}
while (elapsed) {
int temp = audio_MIN (elapsed, sizeof (s->silence));
while (temp) {
int copied = AUD_write (s->voice_po, s->silence, temp);
if (!copied)
return;
temp -= copied;
elapsed -= copied;
}
}
}
static int read_audio (AC97LinkState *s, AC97BusMasterRegs *r,
int max, int *stop)
{
uint8_t tmpbuf[4096];
uint32_t addr = r->bd.addr;
uint32_t temp = r->picb << 1;
uint32_t nread = 0;
int to_copy = 0;
SWVoiceIn *voice = (r - s->bm_regs) == MC_INDEX ? s->voice_mc : s->voice_pi;
temp = audio_MIN (temp, max);
if (!temp) {
*stop = 1;
return 0;
}
while (temp) {
int acquired;
to_copy = audio_MIN (temp, sizeof (tmpbuf));
acquired = AUD_read (voice, tmpbuf, to_copy);
if (!acquired) {
*stop = 1;
break;
}
cpu_physical_memory_write (addr, tmpbuf, acquired);
temp -= acquired;
addr += acquired;
nread += acquired;
}
r->bd.addr = addr;
return nread;
}
static void transfer_audio (AC97LinkState *s, int index, int elapsed)
{
AC97BusMasterRegs *r = &s->bm_regs[index];
int stop = 0;
if (s->invalid_freq[index]) {
AUD_log ("ac97", "attempt to use voice %d with invalid frequency %d\n",
index, s->invalid_freq[index]);
return;
}
if (r->sr & SR_DCH) {
if (r->cr & CR_RPBM) {
switch (index) {
case PO_INDEX:
write_bup (s, elapsed);
break;
}
}
return;
}
while ((elapsed >> 1) && !stop) {
int temp;
if (!r->bd_valid) {
dolog ("invalid bd\n");
fetch_bd (s, r);
}
if (!r->picb) {
dolog ("fresh bd %d is empty %#x %#x\n",
r->civ, r->bd.addr, r->bd.ctl_len);
if (r->civ == r->lvi) {
r->sr |= SR_DCH; /* CELV? */
s->bup_flag = 0;
break;
}
r->sr &= ~SR_CELV;
r->civ = r->piv;
r->piv = (r->piv + 1) % 32;
fetch_bd (s, r);
return;
}
switch (index) {
case PO_INDEX:
temp = write_audio (s, r, elapsed, &stop);
elapsed -= temp;
r->picb -= (temp >> 1);
break;
case PI_INDEX:
case MC_INDEX:
temp = read_audio (s, r, elapsed, &stop);
elapsed -= temp;
r->picb -= (temp >> 1);
break;
}
if (!r->picb) {
uint32_t new_sr = r->sr & ~SR_CELV;
if (r->bd.ctl_len & BD_IOC) {
new_sr |= SR_BCIS;
}
if (r->civ == r->lvi) {
dolog ("Underrun civ (%d) == lvi (%d)\n", r->civ, r->lvi);
new_sr |= SR_LVBCI | SR_DCH | SR_CELV;
stop = 1;
s->bup_flag = (r->bd.ctl_len & BD_BUP) ? BUP_LAST : 0;
}
else {
r->civ = r->piv;
r->piv = (r->piv + 1) % 32;
fetch_bd (s, r);
}
update_sr (s, r, new_sr);
}
}
}
static void pi_callback (void *opaque, int avail)
{
transfer_audio (opaque, PI_INDEX, avail);
}
static void mc_callback (void *opaque, int avail)
{
transfer_audio (opaque, MC_INDEX, avail);
}
static void po_callback (void *opaque, int free)
{
transfer_audio (opaque, PO_INDEX, free);
}
static const VMStateDescription vmstate_ac97_bm_regs = {
.name = "ac97_bm_regs",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField []) {
VMSTATE_UINT32(bdbar, AC97BusMasterRegs),
VMSTATE_UINT8(civ, AC97BusMasterRegs),
VMSTATE_UINT8(lvi, AC97BusMasterRegs),
VMSTATE_UINT16(sr, AC97BusMasterRegs),
VMSTATE_UINT16(picb, AC97BusMasterRegs),
VMSTATE_UINT8(piv, AC97BusMasterRegs),
VMSTATE_UINT8(cr, AC97BusMasterRegs),
VMSTATE_UINT32(bd_valid, AC97BusMasterRegs),
VMSTATE_UINT32(bd.addr, AC97BusMasterRegs),
VMSTATE_UINT32(bd.ctl_len, AC97BusMasterRegs),
VMSTATE_END_OF_LIST()
}
};
static int ac97_post_load (void *opaque, int version_id)
{
uint8_t active[LAST_INDEX];
AC97LinkState *s = opaque;
#ifdef USE_MIXER
record_select (s, mixer_load (s, AC97_Record_Select));
#define V_(a, b) set_volume (s, a, b, mixer_load (s, a))
V_ (AC97_Master_Volume_Mute, AUD_MIXER_VOLUME);
V_ (AC97_PCM_Out_Volume_Mute, AUD_MIXER_PCM);
V_ (AC97_Line_In_Volume_Mute, AUD_MIXER_LINE_IN);
#undef V_
#endif
active[PI_INDEX] = !!(s->bm_regs[PI_INDEX].cr & CR_RPBM);
active[PO_INDEX] = !!(s->bm_regs[PO_INDEX].cr & CR_RPBM);
active[MC_INDEX] = !!(s->bm_regs[MC_INDEX].cr & CR_RPBM);
reset_voices (s, active);
s->bup_flag = 0;
s->last_samp = 0;
return 0;
}
static bool is_version_2 (void *opaque, int version_id)
{
return version_id == 2;
}
static const VMStateDescription vmstate_ac97 = {
.name = "ac97",
.version_id = 3,
.minimum_version_id = 2,
.minimum_version_id_old = 2,
.post_load = ac97_post_load,
.fields = (VMStateField []) {
VMSTATE_PCI_DEVICE(dev, AC97LinkState),
VMSTATE_UINT32(glob_cnt, AC97LinkState),
VMSTATE_UINT32(glob_sta, AC97LinkState),
VMSTATE_UINT32(cas, AC97LinkState),
VMSTATE_STRUCT_ARRAY(bm_regs, AC97LinkState, 3, 1,
vmstate_ac97_bm_regs, AC97BusMasterRegs),
VMSTATE_BUFFER(mixer_data, AC97LinkState),
VMSTATE_UNUSED_TEST(is_version_2, 3),
VMSTATE_END_OF_LIST()
}
};
static void ac97_map (PCIDevice *pci_dev, int region_num,
pcibus_t addr, pcibus_t size, int type)
{
AC97LinkState *s = DO_UPCAST (AC97LinkState, dev, pci_dev);
PCIDevice *d = &s->dev;
if (!region_num) {
s->base[0] = addr;
register_ioport_read (addr, 256 * 1, 1, nam_readb, d);
register_ioport_read (addr, 256 * 2, 2, nam_readw, d);
register_ioport_read (addr, 256 * 4, 4, nam_readl, d);
register_ioport_write (addr, 256 * 1, 1, nam_writeb, d);
register_ioport_write (addr, 256 * 2, 2, nam_writew, d);
register_ioport_write (addr, 256 * 4, 4, nam_writel, d);
}
else {
s->base[1] = addr;
register_ioport_read (addr, 64 * 1, 1, nabm_readb, d);
register_ioport_read (addr, 64 * 2, 2, nabm_readw, d);
register_ioport_read (addr, 64 * 4, 4, nabm_readl, d);
register_ioport_write (addr, 64 * 1, 1, nabm_writeb, d);
register_ioport_write (addr, 64 * 2, 2, nabm_writew, d);
register_ioport_write (addr, 64 * 4, 4, nabm_writel, d);
}
}
static void ac97_on_reset (void *opaque)
{
AC97LinkState *s = opaque;
reset_bm_regs (s, &s->bm_regs[0]);
reset_bm_regs (s, &s->bm_regs[1]);
reset_bm_regs (s, &s->bm_regs[2]);
/*
* Reset the mixer too. The Windows XP driver seems to rely on
* this. At least it wants to read the vendor id before it resets
* the codec manually.
*/
mixer_reset (s);
}
static int ac97_initfn (PCIDevice *dev)
{
AC97LinkState *s = DO_UPCAST (AC97LinkState, dev, dev);
uint8_t *c = s->dev.config;
pci_config_set_vendor_id (c, PCI_VENDOR_ID_INTEL); /* ro */
pci_config_set_device_id (c, PCI_DEVICE_ID_INTEL_82801AA_5); /* ro */
/* TODO: no need to override */
c[PCI_COMMAND] = 0x00; /* pcicmd pci command rw, ro */
c[PCI_COMMAND + 1] = 0x00;
/* TODO: */
c[PCI_STATUS] = PCI_STATUS_FAST_BACK; /* pcists pci status rwc, ro */
c[PCI_STATUS + 1] = PCI_STATUS_DEVSEL_MEDIUM >> 8;
c[PCI_REVISION_ID] = 0x01; /* rid revision ro */
c[PCI_CLASS_PROG] = 0x00; /* pi programming interface ro */
pci_config_set_class (c, PCI_CLASS_MULTIMEDIA_AUDIO); /* ro */
/* TODO set when bar is registered. no need to override. */
/* nabmar native audio mixer base address rw */
c[PCI_BASE_ADDRESS_0] = PCI_BASE_ADDRESS_SPACE_IO;
c[PCI_BASE_ADDRESS_0 + 1] = 0x00;
c[PCI_BASE_ADDRESS_0 + 2] = 0x00;
c[PCI_BASE_ADDRESS_0 + 3] = 0x00;
/* TODO set when bar is registered. no need to override. */
/* nabmbar native audio bus mastering base address rw */
c[PCI_BASE_ADDRESS_0 + 4] = PCI_BASE_ADDRESS_SPACE_IO;
c[PCI_BASE_ADDRESS_0 + 5] = 0x00;
c[PCI_BASE_ADDRESS_0 + 6] = 0x00;
c[PCI_BASE_ADDRESS_0 + 7] = 0x00;
c[PCI_SUBSYSTEM_VENDOR_ID] = 0x86; /* svid subsystem vendor id rwo */
c[PCI_SUBSYSTEM_VENDOR_ID + 1] = 0x80;
c[PCI_SUBSYSTEM_ID] = 0x00; /* sid subsystem id rwo */
c[PCI_SUBSYSTEM_ID + 1] = 0x00;
c[PCI_INTERRUPT_LINE] = 0x00; /* intr_ln interrupt line rw */
/* TODO: RST# value should be 0. */
c[PCI_INTERRUPT_PIN] = 0x01; /* intr_pn interrupt pin ro */
pci_register_bar (&s->dev, 0, 256 * 4, PCI_BASE_ADDRESS_SPACE_IO,
ac97_map);
pci_register_bar (&s->dev, 1, 64 * 4, PCI_BASE_ADDRESS_SPACE_IO, ac97_map);
qemu_register_reset (ac97_on_reset, s);
AUD_register_card ("ac97", &s->card);
ac97_on_reset (s);
return 0;
}
int ac97_init (PCIBus *bus)
{
pci_create_simple (bus, -1, "AC97");
return 0;
}
static PCIDeviceInfo ac97_info = {
.qdev.name = "AC97",
.qdev.desc = "Intel 82801AA AC97 Audio",
.qdev.size = sizeof (AC97LinkState),
.qdev.vmsd = &vmstate_ac97,
.init = ac97_initfn,
};
static void ac97_register (void)
{
pci_qdev_register (&ac97_info);
}
device_init (ac97_register);
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