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qemu/hw/audio/ac97.c
Richard Henderson 856a6fe4f4 hw/audio: Constify VMState 
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231221031652.119827-24-richard.henderson@linaro.org>
2023-12-29 11:17:30 +11:00

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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.
*
* Contributions after 2012-01-13 are licensed under the terms of the
* GNU GPL, version 2 or (at your option) any later version.
*/
#include "qemu/osdep.h"
#include "hw/audio/soundhw.h"
#include "audio/audio.h"
#include "hw/pci/pci_device.h"
#include "hw/qdev-properties.h"
#include "migration/vmstate.h"
#include "qemu/module.h"
#include "sysemu/dma.h"
#include "qom/object.h"
#include "ac97.h"
#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 TYPE_AC97 "AC97"
OBJECT_DECLARE_SIMPLE_TYPE(AC97LinkState, AC97)
#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;
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];
int bup_flag;
MemoryRegion io_nam;
MemoryRegion io_nabm;
};
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 fetch_bd(AC97LinkState *s, AC97BusMasterRegs *r)
{
uint8_t b[8];
pci_dma_read(&s->dev, 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=0x%x ctl=0x%06x len=0x%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=0x%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");
pci_irq_assert(&s->dev);
} else {
s->glob_sta &= ~masks[r - s->bm_regs];
dolog("set irq level=0\n");
pci_irq_deassert(&s->dev);
}
}
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_load: 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 = AUDIO_FORMAT_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]);
}
static void get_volume(uint16_t vol, uint16_t mask, int inverse,
int *mute, uint8_t *lvol, uint8_t *rvol)
{
*mute = (vol >> MUTE_SHIFT) & 1;
*rvol = (255 * (vol & mask)) / mask;
*lvol = (255 * ((vol >> 8) & mask)) / mask;
if (inverse) {
*rvol = 255 - *rvol;
*lvol = 255 - *lvol;
}
}
static void update_combined_volume_out(AC97LinkState *s)
{
uint8_t lvol, rvol, plvol, prvol;
int mute, pmute;
get_volume(mixer_load(s, AC97_Master_Volume_Mute), 0x3f, 1,
&mute, &lvol, &rvol);
get_volume(mixer_load(s, AC97_PCM_Out_Volume_Mute), 0x1f, 1,
&pmute, &plvol, &prvol);
mute = mute | pmute;
lvol = (lvol * plvol) / 255;
rvol = (rvol * prvol) / 255;
AUD_set_volume_out(s->voice_po, mute, lvol, rvol);
}
static void update_volume_in(AC97LinkState *s)
{
uint8_t lvol, rvol;
int mute;
get_volume(mixer_load(s, AC97_Record_Gain_Mute), 0x0f, 0,
&mute, &lvol, &rvol);
AUD_set_volume_in(s->voice_pi, mute, lvol, rvol);
}
static void set_volume(AC97LinkState *s, int index, uint32_t val)
{
switch (index) {
case AC97_Master_Volume_Mute:
val &= 0xbf3f;
mixer_store(s, index, val);
update_combined_volume_out(s);
break;
case AC97_PCM_Out_Volume_Mute:
val &= 0x9f1f;
mixer_store(s, index, val);
update_combined_volume_out(s);
break;
case AC97_Record_Gain_Mute:
val &= 0x8f0f;
mixer_store(s, index, val);
update_volume_in(s);
break;
}
}
static void record_select(AC97LinkState *s, uint32_t val)
{
uint8_t rs = val & REC_MASK;
uint8_t ls = (val >> 8) & REC_MASK;
mixer_store(s, AC97_Record_Select, rs | (ls << 8));
}
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_Headphone_Volume_Mute, 0x0000);
mixer_store(s, AC97_Master_Volume_Mono_Mute, 0x0000);
mixer_store(s, AC97_Master_Tone_RL, 0x0000);
mixer_store(s, AC97_PC_BEEP_Volume_Mute, 0x0000);
mixer_store(s, AC97_Phone_Volume_Mute, 0x0000);
mixer_store(s, AC97_Mic_Volume_Mute, 0x0000);
mixer_store(s, AC97_Line_In_Volume_Mute, 0x0000);
mixer_store(s, AC97_CD_Volume_Mute, 0x0000);
mixer_store(s, AC97_Video_Volume_Mute, 0x0000);
mixer_store(s, AC97_Aux_Volume_Mute, 0x0000);
mixer_store(s, AC97_Record_Gain_Mic_Mute, 0x0000);
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);
record_select(s, 0);
set_volume(s, AC97_Master_Volume_Mute, 0x8000);
set_volume(s, AC97_PCM_Out_Volume_Mute, 0x8808);
set_volume(s, AC97_Record_Gain_Mute, 0x8808);
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 0x%x\n", addr);
s->cas = 0;
return ~0U;
}
static uint32_t nam_readw(void *opaque, uint32_t addr)
{
AC97LinkState *s = opaque;
s->cas = 0;
return mixer_load(s, addr);
}
static uint32_t nam_readl(void *opaque, uint32_t addr)
{
AC97LinkState *s = opaque;
dolog("U nam readl 0x%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 0x%x <- 0x%x\n", addr, val);
s->cas = 0;
}
static void nam_writew(void *opaque, uint32_t addr, uint32_t val)
{
AC97LinkState *s = opaque;
s->cas = 0;
switch (addr) {
case AC97_Reset:
mixer_reset(s);
break;
case AC97_Powerdown_Ctrl_Stat:
val &= ~0x800f;
val |= mixer_load(s, addr) & 0xf;
mixer_store(s, addr, val);
break;
case AC97_PCM_Out_Volume_Mute:
case AC97_Master_Volume_Mute:
case AC97_Record_Gain_Mute:
set_volume(s, addr, val);
break;
case AC97_Record_Select:
record_select(s, val);
break;
case AC97_Vendor_ID1:
case AC97_Vendor_ID2:
dolog("Attempt to write vendor ID to 0x%x\n", val);
break;
case AC97_Extended_Audio_ID:
dolog("Attempt to write extended audio ID to 0x%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 0x%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, addr, 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, addr, 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, addr, 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;
case AC97_Headphone_Volume_Mute:
case AC97_Master_Volume_Mono_Mute:
case AC97_Master_Tone_RL:
case AC97_PC_BEEP_Volume_Mute:
case AC97_Phone_Volume_Mute:
case AC97_Mic_Volume_Mute:
case AC97_Line_In_Volume_Mute:
case AC97_CD_Volume_Mute:
case AC97_Video_Volume_Mute:
case AC97_Aux_Volume_Mute:
case AC97_Record_Gain_Mic_Mute:
case AC97_General_Purpose:
case AC97_3D_Control:
case AC97_Sigmatel_Analog:
case AC97_Sigmatel_Dac2Invert:
/* None of the features in these regs are emulated, so they are RO */
break;
default:
dolog("U nam writew 0x%x <- 0x%x\n", addr, val);
mixer_store(s, addr, val);
break;
}
}
static void nam_writel(void *opaque, uint32_t addr, uint32_t val)
{
AC97LinkState *s = opaque;
dolog("U nam writel 0x%x <- 0x%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 val = ~0U;
switch (addr) {
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(addr)];
val = r->civ;
dolog("CIV[%d] -> 0x%x\n", GET_BM(addr), val);
break;
case PI_LVI:
case PO_LVI:
case MC_LVI:
r = &s->bm_regs[GET_BM(addr)];
val = r->lvi;
dolog("LVI[%d] -> 0x%x\n", GET_BM(addr), val);
break;
case PI_PIV:
case PO_PIV:
case MC_PIV:
r = &s->bm_regs[GET_BM(addr)];
val = r->piv;
dolog("PIV[%d] -> 0x%x\n", GET_BM(addr), val);
break;
case PI_CR:
case PO_CR:
case MC_CR:
r = &s->bm_regs[GET_BM(addr)];
val = r->cr;
dolog("CR[%d] -> 0x%x\n", GET_BM(addr), val);
break;
case PI_SR:
case PO_SR:
case MC_SR:
r = &s->bm_regs[GET_BM(addr)];
val = r->sr & 0xff;
dolog("SRb[%d] -> 0x%x\n", GET_BM(addr), val);
break;
default:
dolog("U nabm readb 0x%x -> 0x%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 val = ~0U;
switch (addr) {
case PI_SR:
case PO_SR:
case MC_SR:
r = &s->bm_regs[GET_BM(addr)];
val = r->sr;
dolog("SR[%d] -> 0x%x\n", GET_BM(addr), val);
break;
case PI_PICB:
case PO_PICB:
case MC_PICB:
r = &s->bm_regs[GET_BM(addr)];
val = r->picb;
dolog("PICB[%d] -> 0x%x\n", GET_BM(addr), val);
break;
default:
dolog("U nabm readw 0x%x -> 0x%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 val = ~0U;
switch (addr) {
case PI_BDBAR:
case PO_BDBAR:
case MC_BDBAR:
r = &s->bm_regs[GET_BM(addr)];
val = r->bdbar;
dolog("BMADDR[%d] -> 0x%x\n", GET_BM(addr), val);
break;
case PI_CIV:
case PO_CIV:
case MC_CIV:
r = &s->bm_regs[GET_BM(addr)];
val = r->civ | (r->lvi << 8) | (r->sr << 16);
dolog("CIV LVI SR[%d] -> 0x%x, 0x%x, 0x%x\n", GET_BM(addr),
r->civ, r->lvi, r->sr);
break;
case PI_PICB:
case PO_PICB:
case MC_PICB:
r = &s->bm_regs[GET_BM(addr)];
val = r->picb | (r->piv << 16) | (r->cr << 24);
dolog("PICB PIV CR[%d] -> 0x%x 0x%x 0x%x 0x%x\n", GET_BM(addr),
val, r->picb, r->piv, r->cr);
break;
case GLOB_CNT:
val = s->glob_cnt;
dolog("glob_cnt -> 0x%x\n", val);
break;
case GLOB_STA:
val = s->glob_sta | GS_S0CR;
dolog("glob_sta -> 0x%x\n", val);
break;
default:
dolog("U nabm readl 0x%x -> 0x%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;
switch (addr) {
case PI_LVI:
case PO_LVI:
case MC_LVI:
r = &s->bm_regs[GET_BM(addr)];
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] <- 0x%x\n", GET_BM(addr), val);
break;
case PI_CR:
case PO_CR:
case MC_CR:
r = &s->bm_regs[GET_BM(addr)];
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] <- 0x%x (cr 0x%x)\n", GET_BM(addr), val, r->cr);
break;
case PI_SR:
case PO_SR:
case MC_SR:
r = &s->bm_regs[GET_BM(addr)];
r->sr |= val & ~(SR_RO_MASK | SR_WCLEAR_MASK);
update_sr(s, r, r->sr & ~(val & SR_WCLEAR_MASK));
dolog("SR[%d] <- 0x%x (sr 0x%x)\n", GET_BM(addr), val, r->sr);
break;
default:
dolog("U nabm writeb 0x%x <- 0x%x\n", addr, val);
break;
}
}
static void nabm_writew(void *opaque, uint32_t addr, uint32_t val)
{
AC97LinkState *s = opaque;
AC97BusMasterRegs *r = NULL;
switch (addr) {
case PI_SR:
case PO_SR:
case MC_SR:
r = &s->bm_regs[GET_BM(addr)];
r->sr |= val & ~(SR_RO_MASK | SR_WCLEAR_MASK);
update_sr(s, r, r->sr & ~(val & SR_WCLEAR_MASK));
dolog("SR[%d] <- 0x%x (sr 0x%x)\n", GET_BM(addr), val, r->sr);
break;
default:
dolog("U nabm writew 0x%x <- 0x%x\n", addr, val);
break;
}
}
static void nabm_writel(void *opaque, uint32_t addr, uint32_t val)
{
AC97LinkState *s = opaque;
AC97BusMasterRegs *r = NULL;
switch (addr) {
case PI_BDBAR:
case PO_BDBAR:
case MC_BDBAR:
r = &s->bm_regs[GET_BM(addr)];
r->bdbar = val & ~3;
dolog("BDBAR[%d] <- 0x%x (bdbar 0x%x)\n", GET_BM(addr), val, r->bdbar);
break;
case GLOB_CNT:
/* TODO: Handle WR or CR being set (warm/cold reset requests) */
if (!(val & (GC_WR | GC_CR))) {
s->glob_cnt = val & GC_VALID_MASK;
}
dolog("glob_cnt <- 0x%x (glob_cnt 0x%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 <- 0x%x (glob_sta 0x%x)\n", val, s->glob_sta);
break;
default:
dolog("U nabm writel 0x%x <- 0x%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 = MIN(temp, max);
if (!temp) {
*stop = 1;
return 0;
}
while (temp) {
int copied;
to_copy = MIN(temp, sizeof(tmpbuf));
pci_dma_read(&s->dev, 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 = 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 = MIN(temp, max);
if (!temp) {
*stop = 1;
return 0;
}
while (temp) {
int acquired;
to_copy = MIN(temp, sizeof(tmpbuf));
acquired = AUD_read(voice, tmpbuf, to_copy);
if (!acquired) {
*stop = 1;
break;
}
pci_dma_write(&s->dev, 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 0x%x 0x%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,
.fields = (const 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;
record_select(s, mixer_load(s, AC97_Record_Select));
set_volume(s, AC97_Master_Volume_Mute,
mixer_load(s, AC97_Master_Volume_Mute));
set_volume(s, AC97_PCM_Out_Volume_Mute,
mixer_load(s, AC97_PCM_Out_Volume_Mute));
set_volume(s, AC97_Record_Gain_Mute,
mixer_load(s, AC97_Record_Gain_Mute));
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,
.post_load = ac97_post_load,
.fields = (const 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 uint64_t nam_read(void *opaque, hwaddr addr, unsigned size)
{
if ((addr / size) > 256) {
return -1;
}
switch (size) {
case 1:
return nam_readb(opaque, addr);
case 2:
return nam_readw(opaque, addr);
case 4:
return nam_readl(opaque, addr);
default:
return -1;
}
}
static void nam_write(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
if ((addr / size) > 256) {
return;
}
switch (size) {
case 1:
nam_writeb(opaque, addr, val);
break;
case 2:
nam_writew(opaque, addr, val);
break;
case 4:
nam_writel(opaque, addr, val);
break;
}
}
static const MemoryRegionOps ac97_io_nam_ops = {
.read = nam_read,
.write = nam_write,
.impl = {
.min_access_size = 1,
.max_access_size = 4,
},
.endianness = DEVICE_LITTLE_ENDIAN,
};
static uint64_t nabm_read(void *opaque, hwaddr addr, unsigned size)
{
if ((addr / size) > 64) {
return -1;
}
switch (size) {
case 1:
return nabm_readb(opaque, addr);
case 2:
return nabm_readw(opaque, addr);
case 4:
return nabm_readl(opaque, addr);
default:
return -1;
}
}
static void nabm_write(void *opaque, hwaddr addr, uint64_t val,
unsigned size)
{
if ((addr / size) > 64) {
return;
}
switch (size) {
case 1:
nabm_writeb(opaque, addr, val);
break;
case 2:
nabm_writew(opaque, addr, val);
break;
case 4:
nabm_writel(opaque, addr, val);
break;
}
}
static const MemoryRegionOps ac97_io_nabm_ops = {
.read = nabm_read,
.write = nabm_write,
.impl = {
.min_access_size = 1,
.max_access_size = 4,
},
.endianness = DEVICE_LITTLE_ENDIAN,
};
static void ac97_on_reset(DeviceState *dev)
{
AC97LinkState *s = AC97(dev);
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 void ac97_realize(PCIDevice *dev, Error **errp)
{
AC97LinkState *s = AC97(dev);
uint8_t *c = s->dev.config;
if (!AUD_register_card ("ac97", &s->card, errp)) {
return;
}
/* 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_CLASS_PROG] = 0x00; /* pi programming interface 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_INTERRUPT_LINE] = 0x00; /* intr_ln interrupt line rw */
c[PCI_INTERRUPT_PIN] = 0x01; /* intr_pn interrupt pin ro */
memory_region_init_io(&s->io_nam, OBJECT(s), &ac97_io_nam_ops, s,
"ac97-nam", 1024);
memory_region_init_io(&s->io_nabm, OBJECT(s), &ac97_io_nabm_ops, s,
"ac97-nabm", 256);
pci_register_bar(&s->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &s->io_nam);
pci_register_bar(&s->dev, 1, PCI_BASE_ADDRESS_SPACE_IO, &s->io_nabm);
ac97_on_reset(DEVICE(s));
}
static void ac97_exit(PCIDevice *dev)
{
AC97LinkState *s = AC97(dev);
AUD_close_in(&s->card, s->voice_pi);
AUD_close_out(&s->card, s->voice_po);
AUD_close_in(&s->card, s->voice_mc);
AUD_remove_card(&s->card);
}
static Property ac97_properties[] = {
DEFINE_AUDIO_PROPERTIES(AC97LinkState, card),
DEFINE_PROP_END_OF_LIST(),
};
static void ac97_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
k->realize = ac97_realize;
k->exit = ac97_exit;
k->vendor_id = PCI_VENDOR_ID_INTEL;
k->device_id = PCI_DEVICE_ID_INTEL_82801AA_5;
k->revision = 0x01;
k->class_id = PCI_CLASS_MULTIMEDIA_AUDIO;
set_bit(DEVICE_CATEGORY_SOUND, dc->categories);
dc->desc = "Intel 82801AA AC97 Audio";
dc->vmsd = &vmstate_ac97;
device_class_set_props(dc, ac97_properties);
dc->reset = ac97_on_reset;
}
static const TypeInfo ac97_info = {
.name = TYPE_AC97,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(AC97LinkState),
.class_init = ac97_class_init,
.interfaces = (InterfaceInfo[]) {
{ INTERFACE_CONVENTIONAL_PCI_DEVICE },
{ },
},
};
static void ac97_register_types(void)
{
type_register_static(&ac97_info);
deprecated_register_soundhw("ac97", "Intel 82801AA AC97 Audio",
0, TYPE_AC97);
}
type_init(ac97_register_types)
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