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Diffstat (limited to 'hw/sb16.c')
-rw-r--r--hw/sb16.c266
1 files changed, 189 insertions, 77 deletions
diff --git a/hw/sb16.c b/hw/sb16.c
index bca5795..e79d192 100644
--- a/hw/sb16.c
+++ b/hw/sb16.c
@@ -1,8 +1,8 @@
/*
* QEMU Soundblaster 16 emulation
- *
- * Copyright (c) 2003-2004 Vassili Karpov (malc)
- *
+ *
+ * Copyright (c) 2003-2005 Vassili Karpov (malc)
+ *
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
@@ -99,9 +99,10 @@ typedef struct SB16State {
int dma_running;
int bytes_per_second;
int align;
- SWVoice *voice;
+ int audio_free;
+ SWVoiceOut *voice;
- QEMUTimer *ts, *aux_ts;
+ QEMUTimer *aux_ts;
/* mixer state */
int mixer_nreg;
uint8_t mixer_regs[256];
@@ -110,6 +111,8 @@ typedef struct SB16State {
/* XXX: suppress that and use a context */
static struct SB16State dsp;
+static void SB_audio_callback (void *opaque, int free);
+
static int magic_of_irq (int irq)
{
switch (irq) {
@@ -174,11 +177,11 @@ static void control (SB16State *s, int hold)
if (hold) {
DMA_hold_DREQ (dma);
- AUD_enable (s->voice, 1);
+ AUD_set_active_out (s->voice, 1);
}
else {
DMA_release_DREQ (dma);
- AUD_enable (s->voice, 0);
+ AUD_set_active_out (s->voice, 0);
}
}
@@ -207,8 +210,9 @@ static void dma_cmd8 (SB16State *s, int mask, int dma_len)
s->freq = (1000000 + (tmp / 2)) / tmp;
}
- if (dma_len != -1)
+ if (dma_len != -1) {
s->block_size = dma_len << s->fmt_stereo;
+ }
else {
/* This is apparently the only way to make both Act1/PL
and SecondReality/FC work
@@ -227,17 +231,28 @@ static void dma_cmd8 (SB16State *s, int mask, int dma_len)
s->dma_auto = (mask & DMA8_AUTO) != 0;
s->align = (1 << s->fmt_stereo) - 1;
- if (s->block_size & s->align)
- dolog ("warning: unaligned buffer\n");
+ if (s->block_size & s->align) {
+ dolog ("warning: misaligned block size %d, alignment %d\n",
+ s->block_size, s->align + 1);
+ }
ldebug ("freq %d, stereo %d, sign %d, bits %d, "
"dma %d, auto %d, fifo %d, high %d\n",
s->freq, s->fmt_stereo, s->fmt_signed, s->fmt_bits,
s->block_size, s->dma_auto, s->fifo, s->highspeed);
- if (s->freq)
- s->voice = AUD_open (s->voice, "sb16", s->freq,
- 1 << s->fmt_stereo, s->fmt);
+ if (s->freq) {
+ s->audio_free = 0;
+ s->voice = AUD_open_out (
+ s->voice,
+ "sb16",
+ s,
+ SB_audio_callback,
+ s->freq,
+ 1 << s->fmt_stereo,
+ s->fmt
+ );
+ }
control (s, 1);
speaker (s, 1);
@@ -309,12 +324,23 @@ static void dma_cmd (SB16State *s, uint8_t cmd, uint8_t d0, int dma_len)
s->bytes_per_second = (s->freq << s->fmt_stereo) << (s->fmt_bits == 16);
s->highspeed = 0;
s->align = (1 << (s->fmt_stereo + (s->fmt_bits == 16))) - 1;
- if (s->block_size & s->align)
- dolog ("warning: unaligned buffer\n");
+ if (s->block_size & s->align) {
+ dolog ("warning: misaligned block size %d, alignment %d\n",
+ s->block_size, s->align + 1);
+ }
- if (s->freq)
- s->voice = AUD_open (s->voice, "sb16", s->freq,
- 1 << s->fmt_stereo, s->fmt);
+ if (s->freq) {
+ s->audio_free = 0;
+ s->voice = AUD_open_out (
+ s->voice,
+ "sb16",
+ s,
+ SB_audio_callback,
+ s->freq,
+ 1 << s->fmt_stereo,
+ s->fmt
+ );
+ }
control (s, 1);
speaker (s, 1);
@@ -323,14 +349,16 @@ static void dma_cmd (SB16State *s, uint8_t cmd, uint8_t d0, int dma_len)
static inline void dsp_out_data (SB16State *s, uint8_t val)
{
ldebug ("outdata %#x\n", val);
- if (s->out_data_len < sizeof (s->out_data))
+ if (s->out_data_len < sizeof (s->out_data)) {
s->out_data[s->out_data_len++] = val;
+ }
}
static inline uint8_t dsp_get_data (SB16State *s)
{
- if (s->in_index)
+ if (s->in_index) {
return s->in2_data[--s->in_index];
+ }
else {
dolog ("buffer underflow\n");
return 0;
@@ -356,6 +384,8 @@ static void command (SB16State *s, uint8_t cmd)
s->needed_bytes = 3;
}
else {
+ s->needed_bytes = 0;
+
switch (cmd) {
case 0x03:
dsp_out_data (s, 0x10); /* s->csp_param); */
@@ -403,7 +433,7 @@ static void command (SB16State *s, uint8_t cmd)
goto warn;
case 0x35:
- dolog ("MIDI command(0x35) not implemented\n");
+ dolog ("0x35 - MIDI command not implemented\n");
break;
case 0x40:
@@ -435,6 +465,38 @@ static void command (SB16State *s, uint8_t cmd)
s->needed_bytes = 2;
break;
+ case 0x74:
+ s->needed_bytes = 2; /* DMA DAC, 4-bit ADPCM */
+ dolog ("0x75 - DMA DAC, 4-bit ADPCM not implemented\n");
+ break;
+
+ case 0x75: /* DMA DAC, 4-bit ADPCM Reference */
+ s->needed_bytes = 2;
+ dolog ("0x74 - DMA DAC, 4-bit ADPCM Reference not implemented\n");
+ break;
+
+ case 0x76: /* DMA DAC, 2.6-bit ADPCM */
+ s->needed_bytes = 2;
+ dolog ("0x74 - DMA DAC, 2.6-bit ADPCM not implemented\n");
+ break;
+
+ case 0x77: /* DMA DAC, 2.6-bit ADPCM Reference */
+ s->needed_bytes = 2;
+ dolog ("0x74 - DMA DAC, 2.6-bit ADPCM Reference not implemented\n");
+ break;
+
+ case 0x7d:
+ dolog ("0x7d - Autio-Initialize DMA DAC, 4-bit ADPCM Reference\n");
+ dolog ("not implemented\n");
+ break;
+
+ case 0x7f:
+ dolog (
+ "0x7d - Autio-Initialize DMA DAC, 2.6-bit ADPCM Reference\n"
+ );
+ dolog ("not implemented\n");
+ break;
+
case 0x80:
s->needed_bytes = 2;
break;
@@ -476,9 +538,9 @@ static void command (SB16State *s, uint8_t cmd)
s->dma_auto = 0;
break;
- case 0xe0:
+ case 0xe0: /* DSP identification */
s->needed_bytes = 1;
- goto warn;
+ break;
case 0xe1:
dsp_out_data (s, s->ver & 0xff);
@@ -503,7 +565,7 @@ static void command (SB16State *s, uint8_t cmd)
case 0xe7:
dolog ("Attempt to probe for ESS (0xe7)?\n");
- return;
+ break;
case 0xe8: /* read test reg */
dsp_out_data (s, s->test_reg);
@@ -529,21 +591,29 @@ static void command (SB16State *s, uint8_t cmd)
goto warn;
default:
- dolog ("unrecognized command %#x\n", cmd);
- return;
+ dolog ("Unrecognized command %#x\n", cmd);
+ break;
}
}
- s->cmd = cmd;
- if (!s->needed_bytes)
+ if (!s->needed_bytes) {
ldebug ("\n");
+ }
+
+ exit:
+ if (!s->needed_bytes) {
+ s->cmd = -1;
+ }
+ else {
+ s->cmd = cmd;
+ }
return;
warn:
dolog ("warning: command %#x,%d is not truly understood yet\n",
cmd, s->needed_bytes);
- s->cmd = cmd;
- return;
+ goto exit;
+
}
static uint16_t dsp_get_lohi (SB16State *s)
@@ -607,8 +677,9 @@ static void complete (SB16State *s)
s->csp_reg83[s->csp_reg83r % 4] = d0;
s->csp_reg83r += 1;
}
- else
+ else {
s->csp_regs[d1] = d0;
+ }
break;
case 0x0f:
@@ -622,8 +693,9 @@ static void complete (SB16State *s)
dsp_out_data (s, s->csp_reg83[s->csp_reg83w % 4]);
s->csp_reg83w += 1;
}
- else
+ else {
dsp_out_data (s, s->csp_regs[d0]);
+ }
break;
case 0x10:
@@ -641,8 +713,9 @@ static void complete (SB16State *s)
break;
case 0x42: /* FT2 sets output freq with this, go figure */
+#if 0
dolog ("cmd 0x42 might not do what it think it should\n");
-
+#endif
case 0x41:
s->freq = dsp_get_hilo (s);
ldebug ("set freq %d\n", s->freq);
@@ -653,6 +726,13 @@ static void complete (SB16State *s)
ldebug ("set dma block len %d\n", s->block_size);
break;
+ case 0x74:
+ case 0x75:
+ case 0x76:
+ case 0x77:
+ /* ADPCM stuff, ignore */
+ break;
+
case 0x80:
{
int freq, samples, bytes;
@@ -662,10 +742,17 @@ static void complete (SB16State *s)
samples = dsp_get_lohi (s) + 1;
bytes = samples << s->fmt_stereo << (s->fmt_bits == 16);
ticks = (bytes * ticks_per_sec) / freq;
- if (ticks < ticks_per_sec / 1024)
+ if (ticks < ticks_per_sec / 1024) {
pic_set_irq (s->irq, 1);
- else
- qemu_mod_timer (s->aux_ts, qemu_get_clock (vm_clock) + ticks);
+ }
+ else {
+ if (s->aux_ts) {
+ qemu_mod_timer (
+ s->aux_ts,
+ qemu_get_clock (vm_clock) + ticks
+ );
+ }
+ }
ldebug ("mix silence %d %d %lld\n", samples, bytes, ticks);
}
break;
@@ -674,7 +761,7 @@ static void complete (SB16State *s)
d0 = dsp_get_data (s);
s->out_data_len = 0;
ldebug ("E0 data = %#x\n", d0);
- dsp_out_data(s, ~d0);
+ dsp_out_data (s, ~d0);
break;
case 0xe2:
@@ -737,6 +824,7 @@ static void reset (SB16State *s)
s->nzero = 0;
s->highspeed = 0;
s->v2x6 = 0;
+ s->cmd = -1;
dsp_out_data(s, 0xaa);
speaker (s, 0);
@@ -761,8 +849,9 @@ static IO_WRITE_PROTO (dsp_write)
pic_set_irq (s->irq, 0);
control (s, 0);
}
- else
+ else {
reset (s);
+ }
}
s->v2x6 = 0;
break;
@@ -845,7 +934,10 @@ static IO_READ_PROTO (dsp_read)
s->last_read_byte = retval;
}
else {
- dolog ("empty output buffer\n");
+ if (s->cmd != -1) {
+ dolog ("empty output buffer for command %#x\n",
+ s->cmd);
+ }
retval = s->last_read_byte;
/* goto error; */
}
@@ -882,13 +974,14 @@ static IO_READ_PROTO (dsp_read)
goto error;
}
- if (!ack)
+ if (!ack) {
ldebug ("read %#x -> %#x\n", nport, retval);
+ }
return retval;
error:
- dolog ("WARNING dsp_read %#x error\n", nport);
+ dolog ("warning: dsp_read %#x error\n", nport);
return 0xff;
}
@@ -933,8 +1026,9 @@ static IO_WRITE_PROTO(mixer_write_datab)
SB16State *s = opaque;
ldebug ("mixer_write [%#x] <- %#x\n", s->mixer_nreg, val);
- if (s->mixer_nreg > sizeof (s->mixer_regs))
+ if (s->mixer_nreg > sizeof (s->mixer_regs)) {
return;
+ }
switch (s->mixer_nreg) {
case 0x00:
@@ -945,8 +1039,9 @@ static IO_WRITE_PROTO(mixer_write_datab)
{
int irq = irq_of_magic (val);
ldebug ("setting irq to %d (val=%#x)\n", irq, val);
- if (irq > 0)
+ if (irq > 0) {
s->irq = irq;
+ }
}
break;
@@ -956,8 +1051,12 @@ static IO_WRITE_PROTO(mixer_write_datab)
dma = lsbindex (val & 0xf);
hdma = lsbindex (val & 0xf0);
- dolog ("attempt to set DMA register 8bit %d, 16bit %d (val=%#x)\n",
- dma, hdma, val);
+ if (dma != s->dma || hdma != s->hdma) {
+ dolog (
+ "attempt to change DMA "
+ "8bit %d(%d), 16bit %d(%d) (val=%#x)\n",
+ dma, s->dma, hdma, s->hdma, val);
+ }
#if 0
s->dma = dma;
s->hdma = hdma;
@@ -971,8 +1070,9 @@ static IO_WRITE_PROTO(mixer_write_datab)
return;
default:
- if (s->mixer_nreg >= 0x80)
- dolog ("attempt to write mixer[%#x] <- %#x\n", s->mixer_nreg, val);
+ if (s->mixer_nreg >= 0x80) {
+ ldebug ("attempt to write mixer[%#x] <- %#x\n", s->mixer_nreg, val);
+ }
break;
}
@@ -989,10 +1089,14 @@ static IO_READ_PROTO(mixer_read)
{
SB16State *s = opaque;
#ifndef DEBUG_SB16_MOST
- if (s->mixer_nreg != 0x82)
-#endif
+ if (s->mixer_nreg != 0x82) {
+ ldebug ("mixer_read[%#x] -> %#x\n",
+ s->mixer_nreg, s->mixer_regs[s->mixer_nreg]);
+ }
+#else
ldebug ("mixer_read[%#x] -> %#x\n",
s->mixer_nreg, s->mixer_regs[s->mixer_nreg]);
+#endif
return s->mixer_regs[s->mixer_nreg];
}
@@ -1010,8 +1114,9 @@ static int write_audio (SB16State *s, int nchan, int dma_pos,
int to_copy, copied;
to_copy = audio_MIN (temp, left);
- if (to_copy > sizeof(tmpbuf))
+ if (to_copy > sizeof(tmpbuf)) {
to_copy = sizeof(tmpbuf);
+ }
copied = DMA_read_memory (nchan, tmpbuf, dma_pos, to_copy);
copied = AUD_write (s->voice, tmpbuf, copied);
@@ -1020,8 +1125,9 @@ static int write_audio (SB16State *s, int nchan, int dma_pos,
dma_pos = (dma_pos + copied) % dma_len;
net += copied;
- if (!copied)
+ if (!copied) {
break;
+ }
}
return net;
@@ -1030,27 +1136,28 @@ static int write_audio (SB16State *s, int nchan, int dma_pos,
static int SB_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len)
{
SB16State *s = opaque;
- int free, rfree, till, copy, written, elapsed;
+ int till, copy, written, free;
if (s->left_till_irq < 0) {
s->left_till_irq = s->block_size;
}
- elapsed = AUD_calc_elapsed (s->voice);
- free = elapsed;/* AUD_get_free (s->voice); */
- rfree = free;
- free = audio_MIN (free, elapsed) & ~s->align;
-
- if ((free <= 0) || !dma_len) {
- return dma_pos;
+ if (s->voice) {
+ free = s->audio_free & ~s->align;
+ if ((free <= 0) || !dma_len) {
+ return dma_pos;
+ }
+ }
+ else {
+ free = dma_len;
}
copy = free;
till = s->left_till_irq;
#ifdef DEBUG_SB16_MOST
- dolog ("pos:%06d free:%d,%d till:%d len:%d\n",
- dma_pos, free, AUD_get_free (s->voice), till, dma_len);
+ dolog ("pos:%06d %d till:%d len:%d\n",
+ dma_pos, free, till, dma_len);
#endif
if (till <= copy) {
@@ -1082,15 +1189,13 @@ static int SB_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len)
s->left_till_irq = s->block_size + s->left_till_irq;
}
- AUD_adjust (s->voice, written);
return dma_pos;
}
-void SB_timer (void *opaque)
+static void SB_audio_callback (void *opaque, int free)
{
SB16State *s = opaque;
- AUD_run ();
- qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + 1);
+ s->audio_free = free;
}
static void SB_save (QEMUFile *f, void *opaque)
@@ -1150,8 +1255,9 @@ static int SB_load (QEMUFile *f, void *opaque, int version_id)
{
SB16State *s = opaque;
- if (version_id != 1)
+ if (version_id != 1) {
return -EINVAL;
+ }
qemu_get_be32s (f, &s->irq);
qemu_get_be32s (f, &s->dma);
@@ -1202,14 +1308,23 @@ static int SB_load (QEMUFile *f, void *opaque, int version_id)
qemu_get_buffer (f, s->mixer_regs, 256);
if (s->voice) {
- AUD_close (s->voice);
+ AUD_close_out (s->voice);
s->voice = NULL;
}
if (s->dma_running) {
- if (s->freq)
- s->voice = AUD_open (s->voice, "sb16", s->freq,
- 1 << s->fmt_stereo, s->fmt);
+ if (s->freq) {
+ s->audio_free = 0;
+ s->voice = AUD_open_out (
+ s->voice,
+ "sb16",
+ s,
+ SB_audio_callback,
+ s->freq,
+ 1 << s->fmt_stereo,
+ s->fmt
+ );
+ }
control (s, 1);
speaker (s, s->speaker);
@@ -1224,10 +1339,7 @@ void SB16_init (void)
static const uint8_t dsp_write_ports[] = {0x6, 0xc};
static const uint8_t dsp_read_ports[] = {0x6, 0xa, 0xc, 0xd, 0xe, 0xf};
- s->ts = qemu_new_timer (vm_clock, SB_timer, s);
- if (!s->ts)
- return;
-
+ s->cmd = -1;
s->irq = conf.irq;
s->dma = conf.dma;
s->hdma = conf.hdma;
@@ -1243,8 +1355,9 @@ void SB16_init (void)
reset_mixer (s);
s->aux_ts = qemu_new_timer (vm_clock, aux_timer, s);
- if (!s->aux_ts)
- return;
+ if (!s->aux_ts) {
+ dolog ("Can not create auxiliary timer\n");
+ }
for (i = 0; i < LENOFA (dsp_write_ports); i++) {
register_ioport_write (s->port + dsp_write_ports[i], 1, 1, dsp_write, s);
@@ -1263,6 +1376,5 @@ void SB16_init (void)
DMA_register_channel (s->dma, SB_read_DMA, s);
s->can_write = 1;
- qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + 1);
register_savevm ("sb16", 0, 1, SB_save, SB_load, s);
}
generated by cgit v1.1 at 2024-12-28 18:55:34 +0000