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| 1 |
/*
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|---|---|
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* QEMU Soundblaster 16 emulation
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*
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* Copyright (c) 2003-2005 Vassili Karpov (malc)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h" |
| 25 |
#include "audiodev.h" |
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#include "audio/audio.h" |
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#include "isa.h" |
| 28 |
#include "qemu-timer.h" |
| 29 |
|
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#define dolog(...) AUD_log ("sb16", __VA_ARGS__) |
| 31 |
|
| 32 |
/* #define DEBUG */
|
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/* #define DEBUG_SB16_MOST */
|
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|
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#ifdef DEBUG
|
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#define ldebug(...) dolog (__VA_ARGS__)
|
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#else
|
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#define ldebug(...)
|
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#endif
|
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|
| 41 |
#define IO_READ_PROTO(name) \
|
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uint32_t name (void *opaque, uint32_t nport)
|
| 43 |
#define IO_WRITE_PROTO(name) \
|
| 44 |
void name (void *opaque, uint32_t nport, uint32_t val) |
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|
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static const char e3[] = "COPYRIGHT (C) CREATIVE TECHNOLOGY LTD, 1992."; |
| 47 |
|
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static struct { |
| 49 |
int ver_lo;
|
| 50 |
int ver_hi;
|
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int irq;
|
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int dma;
|
| 53 |
int hdma;
|
| 54 |
int port;
|
| 55 |
} conf = {5, 4, 5, 1, 5, 0x220};
|
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|
| 57 |
typedef struct SB16State { |
| 58 |
QEMUSoundCard card; |
| 59 |
qemu_irq *pic; |
| 60 |
int irq;
|
| 61 |
int dma;
|
| 62 |
int hdma;
|
| 63 |
int port;
|
| 64 |
int ver;
|
| 65 |
|
| 66 |
int in_index;
|
| 67 |
int out_data_len;
|
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int fmt_stereo;
|
| 69 |
int fmt_signed;
|
| 70 |
int fmt_bits;
|
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audfmt_e fmt; |
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int dma_auto;
|
| 73 |
int block_size;
|
| 74 |
int fifo;
|
| 75 |
int freq;
|
| 76 |
int time_const;
|
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int speaker;
|
| 78 |
int needed_bytes;
|
| 79 |
int cmd;
|
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int use_hdma;
|
| 81 |
int highspeed;
|
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int can_write;
|
| 83 |
|
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int v2x6;
|
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|
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uint8_t csp_param; |
| 87 |
uint8_t csp_value; |
| 88 |
uint8_t csp_mode; |
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uint8_t csp_regs[256];
|
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uint8_t csp_index; |
| 91 |
uint8_t csp_reg83[4];
|
| 92 |
int csp_reg83r;
|
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int csp_reg83w;
|
| 94 |
|
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uint8_t in2_data[10];
|
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uint8_t out_data[50];
|
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uint8_t test_reg; |
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uint8_t last_read_byte; |
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int nzero;
|
| 100 |
|
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int left_till_irq;
|
| 102 |
|
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int dma_running;
|
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int bytes_per_second;
|
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int align;
|
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int audio_free;
|
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SWVoiceOut *voice; |
| 108 |
|
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QEMUTimer *aux_ts; |
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/* mixer state */
|
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int mixer_nreg;
|
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uint8_t mixer_regs[256];
|
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} SB16State; |
| 114 |
|
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static void SB_audio_callback (void *opaque, int free); |
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|
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static int magic_of_irq (int irq) |
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{
|
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switch (irq) {
|
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case 5: |
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return 2; |
| 122 |
case 7: |
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return 4; |
| 124 |
case 9: |
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return 1; |
| 126 |
case 10: |
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return 8; |
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default:
|
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dolog ("bad irq %d\n", irq);
|
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return 2; |
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} |
| 132 |
} |
| 133 |
|
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static int irq_of_magic (int magic) |
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{
|
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switch (magic) {
|
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case 1: |
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return 9; |
| 139 |
case 2: |
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return 5; |
| 141 |
case 4: |
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return 7; |
| 143 |
case 8: |
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return 10; |
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default:
|
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dolog ("bad irq magic %d\n", magic);
|
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return -1; |
| 148 |
} |
| 149 |
} |
| 150 |
|
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#if 0
|
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static void log_dsp (SB16State *dsp)
|
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{
|
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ldebug ("%s:%s:%d:%s:dmasize=%d:freq=%d:const=%d:speaker=%d\n",
|
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dsp->fmt_stereo ? "Stereo" : "Mono",
|
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dsp->fmt_signed ? "Signed" : "Unsigned",
|
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dsp->fmt_bits,
|
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dsp->dma_auto ? "Auto" : "Single",
|
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dsp->block_size,
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dsp->freq,
|
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dsp->time_const,
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dsp->speaker);
|
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}
|
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#endif
|
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|
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static void speaker (SB16State *s, int on) |
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{
|
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s->speaker = on; |
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/* AUD_enable (s->voice, on); */
|
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} |
| 171 |
|
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static void control (SB16State *s, int hold) |
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{
|
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int dma = s->use_hdma ? s->hdma : s->dma;
|
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s->dma_running = hold; |
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|
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ldebug ("hold %d high %d dma %d\n", hold, s->use_hdma, dma);
|
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|
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if (hold) {
|
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DMA_hold_DREQ (dma); |
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AUD_set_active_out (s->voice, 1);
|
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} |
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else {
|
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DMA_release_DREQ (dma); |
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AUD_set_active_out (s->voice, 0);
|
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} |
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} |
| 188 |
|
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static void aux_timer (void *opaque) |
| 190 |
{
|
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SB16State *s = opaque; |
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s->can_write = 1;
|
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qemu_irq_raise (s->pic[s->irq]); |
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} |
| 195 |
|
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#define DMA8_AUTO 1 |
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#define DMA8_HIGH 2 |
| 198 |
|
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static void continue_dma8 (SB16State *s) |
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{
|
| 201 |
if (s->freq > 0) { |
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struct audsettings as;
|
| 203 |
|
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s->audio_free = 0;
|
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|
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as.freq = s->freq; |
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as.nchannels = 1 << s->fmt_stereo;
|
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as.fmt = s->fmt; |
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as.endianness = 0;
|
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|
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s->voice = AUD_open_out ( |
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&s->card, |
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s->voice, |
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"sb16",
|
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s, |
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SB_audio_callback, |
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&as |
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); |
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} |
| 220 |
|
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control (s, 1);
|
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} |
| 223 |
|
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static void dma_cmd8 (SB16State *s, int mask, int dma_len) |
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{
|
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s->fmt = AUD_FMT_U8; |
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s->use_hdma = 0;
|
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s->fmt_bits = 8;
|
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s->fmt_signed = 0;
|
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s->fmt_stereo = (s->mixer_regs[0x0e] & 2) != 0; |
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if (-1 == s->time_const) { |
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if (s->freq <= 0) |
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s->freq = 11025;
|
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} |
| 235 |
else {
|
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int tmp = (256 - s->time_const); |
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s->freq = (1000000 + (tmp / 2)) / tmp; |
| 238 |
} |
| 239 |
|
| 240 |
if (dma_len != -1) { |
| 241 |
s->block_size = dma_len << s->fmt_stereo; |
| 242 |
} |
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else {
|
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/* This is apparently the only way to make both Act1/PL
|
| 245 |
and SecondReality/FC work
|
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|
| 247 |
Act1 sets block size via command 0x48 and it's an odd number
|
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SR does the same with even number
|
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Both use stereo, and Creatives own documentation states that
|
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0x48 sets block size in bytes less one.. go figure */
|
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s->block_size &= ~s->fmt_stereo; |
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} |
| 253 |
|
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s->freq >>= s->fmt_stereo; |
| 255 |
s->left_till_irq = s->block_size; |
| 256 |
s->bytes_per_second = (s->freq << s->fmt_stereo); |
| 257 |
/* s->highspeed = (mask & DMA8_HIGH) != 0; */
|
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s->dma_auto = (mask & DMA8_AUTO) != 0;
|
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s->align = (1 << s->fmt_stereo) - 1; |
| 260 |
|
| 261 |
if (s->block_size & s->align) {
|
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dolog ("warning: misaligned block size %d, alignment %d\n",
|
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s->block_size, s->align + 1);
|
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} |
| 265 |
|
| 266 |
ldebug ("freq %d, stereo %d, sign %d, bits %d, "
|
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"dma %d, auto %d, fifo %d, high %d\n",
|
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s->freq, s->fmt_stereo, s->fmt_signed, s->fmt_bits, |
| 269 |
s->block_size, s->dma_auto, s->fifo, s->highspeed); |
| 270 |
|
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continue_dma8 (s); |
| 272 |
speaker (s, 1);
|
| 273 |
} |
| 274 |
|
| 275 |
static void dma_cmd (SB16State *s, uint8_t cmd, uint8_t d0, int dma_len) |
| 276 |
{
|
| 277 |
s->use_hdma = cmd < 0xc0;
|
| 278 |
s->fifo = (cmd >> 1) & 1; |
| 279 |
s->dma_auto = (cmd >> 2) & 1; |
| 280 |
s->fmt_signed = (d0 >> 4) & 1; |
| 281 |
s->fmt_stereo = (d0 >> 5) & 1; |
| 282 |
|
| 283 |
switch (cmd >> 4) { |
| 284 |
case 11: |
| 285 |
s->fmt_bits = 16;
|
| 286 |
break;
|
| 287 |
|
| 288 |
case 12: |
| 289 |
s->fmt_bits = 8;
|
| 290 |
break;
|
| 291 |
} |
| 292 |
|
| 293 |
if (-1 != s->time_const) { |
| 294 |
#if 1 |
| 295 |
int tmp = 256 - s->time_const; |
| 296 |
s->freq = (1000000 + (tmp / 2)) / tmp; |
| 297 |
#else
|
| 298 |
/* s->freq = 1000000 / ((255 - s->time_const) << s->fmt_stereo); */
|
| 299 |
s->freq = 1000000 / ((255 - s->time_const)); |
| 300 |
#endif
|
| 301 |
s->time_const = -1;
|
| 302 |
} |
| 303 |
|
| 304 |
s->block_size = dma_len + 1;
|
| 305 |
s->block_size <<= (s->fmt_bits == 16);
|
| 306 |
if (!s->dma_auto) {
|
| 307 |
/* It is clear that for DOOM and auto-init this value
|
| 308 |
shouldn't take stereo into account, while Miles Sound Systems
|
| 309 |
setsound.exe with single transfer mode wouldn't work without it
|
| 310 |
wonders of SB16 yet again */
|
| 311 |
s->block_size <<= s->fmt_stereo; |
| 312 |
} |
| 313 |
|
| 314 |
ldebug ("freq %d, stereo %d, sign %d, bits %d, "
|
| 315 |
"dma %d, auto %d, fifo %d, high %d\n",
|
| 316 |
s->freq, s->fmt_stereo, s->fmt_signed, s->fmt_bits, |
| 317 |
s->block_size, s->dma_auto, s->fifo, s->highspeed); |
| 318 |
|
| 319 |
if (16 == s->fmt_bits) { |
| 320 |
if (s->fmt_signed) {
|
| 321 |
s->fmt = AUD_FMT_S16; |
| 322 |
} |
| 323 |
else {
|
| 324 |
s->fmt = AUD_FMT_U16; |
| 325 |
} |
| 326 |
} |
| 327 |
else {
|
| 328 |
if (s->fmt_signed) {
|
| 329 |
s->fmt = AUD_FMT_S8; |
| 330 |
} |
| 331 |
else {
|
| 332 |
s->fmt = AUD_FMT_U8; |
| 333 |
} |
| 334 |
} |
| 335 |
|
| 336 |
s->left_till_irq = s->block_size; |
| 337 |
|
| 338 |
s->bytes_per_second = (s->freq << s->fmt_stereo) << (s->fmt_bits == 16);
|
| 339 |
s->highspeed = 0;
|
| 340 |
s->align = (1 << (s->fmt_stereo + (s->fmt_bits == 16))) - 1; |
| 341 |
if (s->block_size & s->align) {
|
| 342 |
dolog ("warning: misaligned block size %d, alignment %d\n",
|
| 343 |
s->block_size, s->align + 1);
|
| 344 |
} |
| 345 |
|
| 346 |
if (s->freq) {
|
| 347 |
struct audsettings as;
|
| 348 |
|
| 349 |
s->audio_free = 0;
|
| 350 |
|
| 351 |
as.freq = s->freq; |
| 352 |
as.nchannels = 1 << s->fmt_stereo;
|
| 353 |
as.fmt = s->fmt; |
| 354 |
as.endianness = 0;
|
| 355 |
|
| 356 |
s->voice = AUD_open_out ( |
| 357 |
&s->card, |
| 358 |
s->voice, |
| 359 |
"sb16",
|
| 360 |
s, |
| 361 |
SB_audio_callback, |
| 362 |
&as |
| 363 |
); |
| 364 |
} |
| 365 |
|
| 366 |
control (s, 1);
|
| 367 |
speaker (s, 1);
|
| 368 |
} |
| 369 |
|
| 370 |
static inline void dsp_out_data (SB16State *s, uint8_t val) |
| 371 |
{
|
| 372 |
ldebug ("outdata %#x\n", val);
|
| 373 |
if ((size_t) s->out_data_len < sizeof (s->out_data)) { |
| 374 |
s->out_data[s->out_data_len++] = val; |
| 375 |
} |
| 376 |
} |
| 377 |
|
| 378 |
static inline uint8_t dsp_get_data (SB16State *s) |
| 379 |
{
|
| 380 |
if (s->in_index) {
|
| 381 |
return s->in2_data[--s->in_index];
|
| 382 |
} |
| 383 |
else {
|
| 384 |
dolog ("buffer underflow\n");
|
| 385 |
return 0; |
| 386 |
} |
| 387 |
} |
| 388 |
|
| 389 |
static void command (SB16State *s, uint8_t cmd) |
| 390 |
{
|
| 391 |
ldebug ("command %#x\n", cmd);
|
| 392 |
|
| 393 |
if (cmd > 0xaf && cmd < 0xd0) { |
| 394 |
if (cmd & 8) { |
| 395 |
dolog ("ADC not yet supported (command %#x)\n", cmd);
|
| 396 |
} |
| 397 |
|
| 398 |
switch (cmd >> 4) { |
| 399 |
case 11: |
| 400 |
case 12: |
| 401 |
break;
|
| 402 |
default:
|
| 403 |
dolog ("%#x wrong bits\n", cmd);
|
| 404 |
} |
| 405 |
s->needed_bytes = 3;
|
| 406 |
} |
| 407 |
else {
|
| 408 |
s->needed_bytes = 0;
|
| 409 |
|
| 410 |
switch (cmd) {
|
| 411 |
case 0x03: |
| 412 |
dsp_out_data (s, 0x10); /* s->csp_param); */ |
| 413 |
goto warn;
|
| 414 |
|
| 415 |
case 0x04: |
| 416 |
s->needed_bytes = 1;
|
| 417 |
goto warn;
|
| 418 |
|
| 419 |
case 0x05: |
| 420 |
s->needed_bytes = 2;
|
| 421 |
goto warn;
|
| 422 |
|
| 423 |
case 0x08: |
| 424 |
/* __asm__ ("int3"); */
|
| 425 |
goto warn;
|
| 426 |
|
| 427 |
case 0x0e: |
| 428 |
s->needed_bytes = 2;
|
| 429 |
goto warn;
|
| 430 |
|
| 431 |
case 0x09: |
| 432 |
dsp_out_data (s, 0xf8);
|
| 433 |
goto warn;
|
| 434 |
|
| 435 |
case 0x0f: |
| 436 |
s->needed_bytes = 1;
|
| 437 |
goto warn;
|
| 438 |
|
| 439 |
case 0x10: |
| 440 |
s->needed_bytes = 1;
|
| 441 |
goto warn;
|
| 442 |
|
| 443 |
case 0x14: |
| 444 |
s->needed_bytes = 2;
|
| 445 |
s->block_size = 0;
|
| 446 |
break;
|
| 447 |
|
| 448 |
case 0x1c: /* Auto-Initialize DMA DAC, 8-bit */ |
| 449 |
dma_cmd8 (s, DMA8_AUTO, -1);
|
| 450 |
break;
|
| 451 |
|
| 452 |
case 0x20: /* Direct ADC, Juice/PL */ |
| 453 |
dsp_out_data (s, 0xff);
|
| 454 |
goto warn;
|
| 455 |
|
| 456 |
case 0x35: |
| 457 |
dolog ("0x35 - MIDI command not implemented\n");
|
| 458 |
break;
|
| 459 |
|
| 460 |
case 0x40: |
| 461 |
s->freq = -1;
|
| 462 |
s->time_const = -1;
|
| 463 |
s->needed_bytes = 1;
|
| 464 |
break;
|
| 465 |
|
| 466 |
case 0x41: |
| 467 |
s->freq = -1;
|
| 468 |
s->time_const = -1;
|
| 469 |
s->needed_bytes = 2;
|
| 470 |
break;
|
| 471 |
|
| 472 |
case 0x42: |
| 473 |
s->freq = -1;
|
| 474 |
s->time_const = -1;
|
| 475 |
s->needed_bytes = 2;
|
| 476 |
goto warn;
|
| 477 |
|
| 478 |
case 0x45: |
| 479 |
dsp_out_data (s, 0xaa);
|
| 480 |
goto warn;
|
| 481 |
|
| 482 |
case 0x47: /* Continue Auto-Initialize DMA 16bit */ |
| 483 |
break;
|
| 484 |
|
| 485 |
case 0x48: |
| 486 |
s->needed_bytes = 2;
|
| 487 |
break;
|
| 488 |
|
| 489 |
case 0x74: |
| 490 |
s->needed_bytes = 2; /* DMA DAC, 4-bit ADPCM */ |
| 491 |
dolog ("0x75 - DMA DAC, 4-bit ADPCM not implemented\n");
|
| 492 |
break;
|
| 493 |
|
| 494 |
case 0x75: /* DMA DAC, 4-bit ADPCM Reference */ |
| 495 |
s->needed_bytes = 2;
|
| 496 |
dolog ("0x74 - DMA DAC, 4-bit ADPCM Reference not implemented\n");
|
| 497 |
break;
|
| 498 |
|
| 499 |
case 0x76: /* DMA DAC, 2.6-bit ADPCM */ |
| 500 |
s->needed_bytes = 2;
|
| 501 |
dolog ("0x74 - DMA DAC, 2.6-bit ADPCM not implemented\n");
|
| 502 |
break;
|
| 503 |
|
| 504 |
case 0x77: /* DMA DAC, 2.6-bit ADPCM Reference */ |
| 505 |
s->needed_bytes = 2;
|
| 506 |
dolog ("0x74 - DMA DAC, 2.6-bit ADPCM Reference not implemented\n");
|
| 507 |
break;
|
| 508 |
|
| 509 |
case 0x7d: |
| 510 |
dolog ("0x7d - Autio-Initialize DMA DAC, 4-bit ADPCM Reference\n");
|
| 511 |
dolog ("not implemented\n");
|
| 512 |
break;
|
| 513 |
|
| 514 |
case 0x7f: |
| 515 |
dolog ( |
| 516 |
"0x7d - Autio-Initialize DMA DAC, 2.6-bit ADPCM Reference\n"
|
| 517 |
); |
| 518 |
dolog ("not implemented\n");
|
| 519 |
break;
|
| 520 |
|
| 521 |
case 0x80: |
| 522 |
s->needed_bytes = 2;
|
| 523 |
break;
|
| 524 |
|
| 525 |
case 0x90: |
| 526 |
case 0x91: |
| 527 |
dma_cmd8 (s, ((cmd & 1) == 0) | DMA8_HIGH, -1); |
| 528 |
break;
|
| 529 |
|
| 530 |
case 0xd0: /* halt DMA operation. 8bit */ |
| 531 |
control (s, 0);
|
| 532 |
break;
|
| 533 |
|
| 534 |
case 0xd1: /* speaker on */ |
| 535 |
speaker (s, 1);
|
| 536 |
break;
|
| 537 |
|
| 538 |
case 0xd3: /* speaker off */ |
| 539 |
speaker (s, 0);
|
| 540 |
break;
|
| 541 |
|
| 542 |
case 0xd4: /* continue DMA operation. 8bit */ |
| 543 |
/* KQ6 (or maybe Sierras audblst.drv in general) resets
|
| 544 |
the frequency between halt/continue */
|
| 545 |
continue_dma8 (s); |
| 546 |
break;
|
| 547 |
|
| 548 |
case 0xd5: /* halt DMA operation. 16bit */ |
| 549 |
control (s, 0);
|
| 550 |
break;
|
| 551 |
|
| 552 |
case 0xd6: /* continue DMA operation. 16bit */ |
| 553 |
control (s, 1);
|
| 554 |
break;
|
| 555 |
|
| 556 |
case 0xd9: /* exit auto-init DMA after this block. 16bit */ |
| 557 |
s->dma_auto = 0;
|
| 558 |
break;
|
| 559 |
|
| 560 |
case 0xda: /* exit auto-init DMA after this block. 8bit */ |
| 561 |
s->dma_auto = 0;
|
| 562 |
break;
|
| 563 |
|
| 564 |
case 0xe0: /* DSP identification */ |
| 565 |
s->needed_bytes = 1;
|
| 566 |
break;
|
| 567 |
|
| 568 |
case 0xe1: |
| 569 |
dsp_out_data (s, s->ver & 0xff);
|
| 570 |
dsp_out_data (s, s->ver >> 8);
|
| 571 |
break;
|
| 572 |
|
| 573 |
case 0xe2: |
| 574 |
s->needed_bytes = 1;
|
| 575 |
goto warn;
|
| 576 |
|
| 577 |
case 0xe3: |
| 578 |
{
|
| 579 |
int i;
|
| 580 |
for (i = sizeof (e3) - 1; i >= 0; --i) |
| 581 |
dsp_out_data (s, e3[i]); |
| 582 |
} |
| 583 |
break;
|
| 584 |
|
| 585 |
case 0xe4: /* write test reg */ |
| 586 |
s->needed_bytes = 1;
|
| 587 |
break;
|
| 588 |
|
| 589 |
case 0xe7: |
| 590 |
dolog ("Attempt to probe for ESS (0xe7)?\n");
|
| 591 |
break;
|
| 592 |
|
| 593 |
case 0xe8: /* read test reg */ |
| 594 |
dsp_out_data (s, s->test_reg); |
| 595 |
break;
|
| 596 |
|
| 597 |
case 0xf2: |
| 598 |
case 0xf3: |
| 599 |
dsp_out_data (s, 0xaa);
|
| 600 |
s->mixer_regs[0x82] |= (cmd == 0xf2) ? 1 : 2; |
| 601 |
qemu_irq_raise (s->pic[s->irq]); |
| 602 |
break;
|
| 603 |
|
| 604 |
case 0xf9: |
| 605 |
s->needed_bytes = 1;
|
| 606 |
goto warn;
|
| 607 |
|
| 608 |
case 0xfa: |
| 609 |
dsp_out_data (s, 0);
|
| 610 |
goto warn;
|
| 611 |
|
| 612 |
case 0xfc: /* FIXME */ |
| 613 |
dsp_out_data (s, 0);
|
| 614 |
goto warn;
|
| 615 |
|
| 616 |
default:
|
| 617 |
dolog ("Unrecognized command %#x\n", cmd);
|
| 618 |
break;
|
| 619 |
} |
| 620 |
} |
| 621 |
|
| 622 |
if (!s->needed_bytes) {
|
| 623 |
ldebug ("\n");
|
| 624 |
} |
| 625 |
|
| 626 |
exit:
|
| 627 |
if (!s->needed_bytes) {
|
| 628 |
s->cmd = -1;
|
| 629 |
} |
| 630 |
else {
|
| 631 |
s->cmd = cmd; |
| 632 |
} |
| 633 |
return;
|
| 634 |
|
| 635 |
warn:
|
| 636 |
dolog ("warning: command %#x,%d is not truly understood yet\n",
|
| 637 |
cmd, s->needed_bytes); |
| 638 |
goto exit;
|
| 639 |
|
| 640 |
} |
| 641 |
|
| 642 |
static uint16_t dsp_get_lohi (SB16State *s)
|
| 643 |
{
|
| 644 |
uint8_t hi = dsp_get_data (s); |
| 645 |
uint8_t lo = dsp_get_data (s); |
| 646 |
return (hi << 8) | lo; |
| 647 |
} |
| 648 |
|
| 649 |
static uint16_t dsp_get_hilo (SB16State *s)
|
| 650 |
{
|
| 651 |
uint8_t lo = dsp_get_data (s); |
| 652 |
uint8_t hi = dsp_get_data (s); |
| 653 |
return (hi << 8) | lo; |
| 654 |
} |
| 655 |
|
| 656 |
static void complete (SB16State *s) |
| 657 |
{
|
| 658 |
int d0, d1, d2;
|
| 659 |
ldebug ("complete command %#x, in_index %d, needed_bytes %d\n",
|
| 660 |
s->cmd, s->in_index, s->needed_bytes); |
| 661 |
|
| 662 |
if (s->cmd > 0xaf && s->cmd < 0xd0) { |
| 663 |
d2 = dsp_get_data (s); |
| 664 |
d1 = dsp_get_data (s); |
| 665 |
d0 = dsp_get_data (s); |
| 666 |
|
| 667 |
if (s->cmd & 8) { |
| 668 |
dolog ("ADC params cmd = %#x d0 = %d, d1 = %d, d2 = %d\n",
|
| 669 |
s->cmd, d0, d1, d2); |
| 670 |
} |
| 671 |
else {
|
| 672 |
ldebug ("cmd = %#x d0 = %d, d1 = %d, d2 = %d\n",
|
| 673 |
s->cmd, d0, d1, d2); |
| 674 |
dma_cmd (s, s->cmd, d0, d1 + (d2 << 8));
|
| 675 |
} |
| 676 |
} |
| 677 |
else {
|
| 678 |
switch (s->cmd) {
|
| 679 |
case 0x04: |
| 680 |
s->csp_mode = dsp_get_data (s); |
| 681 |
s->csp_reg83r = 0;
|
| 682 |
s->csp_reg83w = 0;
|
| 683 |
ldebug ("CSP command 0x04: mode=%#x\n", s->csp_mode);
|
| 684 |
break;
|
| 685 |
|
| 686 |
case 0x05: |
| 687 |
s->csp_param = dsp_get_data (s); |
| 688 |
s->csp_value = dsp_get_data (s); |
| 689 |
ldebug ("CSP command 0x05: param=%#x value=%#x\n",
|
| 690 |
s->csp_param, |
| 691 |
s->csp_value); |
| 692 |
break;
|
| 693 |
|
| 694 |
case 0x0e: |
| 695 |
d0 = dsp_get_data (s); |
| 696 |
d1 = dsp_get_data (s); |
| 697 |
ldebug ("write CSP register %d <- %#x\n", d1, d0);
|
| 698 |
if (d1 == 0x83) { |
| 699 |
ldebug ("0x83[%d] <- %#x\n", s->csp_reg83r, d0);
|
| 700 |
s->csp_reg83[s->csp_reg83r % 4] = d0;
|
| 701 |
s->csp_reg83r += 1;
|
| 702 |
} |
| 703 |
else {
|
| 704 |
s->csp_regs[d1] = d0; |
| 705 |
} |
| 706 |
break;
|
| 707 |
|
| 708 |
case 0x0f: |
| 709 |
d0 = dsp_get_data (s); |
| 710 |
ldebug ("read CSP register %#x -> %#x, mode=%#x\n",
|
| 711 |
d0, s->csp_regs[d0], s->csp_mode); |
| 712 |
if (d0 == 0x83) { |
| 713 |
ldebug ("0x83[%d] -> %#x\n",
|
| 714 |
s->csp_reg83w, |
| 715 |
s->csp_reg83[s->csp_reg83w % 4]);
|
| 716 |
dsp_out_data (s, s->csp_reg83[s->csp_reg83w % 4]);
|
| 717 |
s->csp_reg83w += 1;
|
| 718 |
} |
| 719 |
else {
|
| 720 |
dsp_out_data (s, s->csp_regs[d0]); |
| 721 |
} |
| 722 |
break;
|
| 723 |
|
| 724 |
case 0x10: |
| 725 |
d0 = dsp_get_data (s); |
| 726 |
dolog ("cmd 0x10 d0=%#x\n", d0);
|
| 727 |
break;
|
| 728 |
|
| 729 |
case 0x14: |
| 730 |
dma_cmd8 (s, 0, dsp_get_lohi (s) + 1); |
| 731 |
break;
|
| 732 |
|
| 733 |
case 0x40: |
| 734 |
s->time_const = dsp_get_data (s); |
| 735 |
ldebug ("set time const %d\n", s->time_const);
|
| 736 |
break;
|
| 737 |
|
| 738 |
case 0x42: /* FT2 sets output freq with this, go figure */ |
| 739 |
#if 0
|
| 740 |
dolog ("cmd 0x42 might not do what it think it should\n");
|
| 741 |
#endif
|
| 742 |
case 0x41: |
| 743 |
s->freq = dsp_get_hilo (s); |
| 744 |
ldebug ("set freq %d\n", s->freq);
|
| 745 |
break;
|
| 746 |
|
| 747 |
case 0x48: |
| 748 |
s->block_size = dsp_get_lohi (s) + 1;
|
| 749 |
ldebug ("set dma block len %d\n", s->block_size);
|
| 750 |
break;
|
| 751 |
|
| 752 |
case 0x74: |
| 753 |
case 0x75: |
| 754 |
case 0x76: |
| 755 |
case 0x77: |
| 756 |
/* ADPCM stuff, ignore */
|
| 757 |
break;
|
| 758 |
|
| 759 |
case 0x80: |
| 760 |
{
|
| 761 |
int freq, samples, bytes;
|
| 762 |
int64_t ticks; |
| 763 |
|
| 764 |
freq = s->freq > 0 ? s->freq : 11025; |
| 765 |
samples = dsp_get_lohi (s) + 1;
|
| 766 |
bytes = samples << s->fmt_stereo << (s->fmt_bits == 16);
|
| 767 |
ticks = (bytes * ticks_per_sec) / freq; |
| 768 |
if (ticks < ticks_per_sec / 1024) { |
| 769 |
qemu_irq_raise (s->pic[s->irq]); |
| 770 |
} |
| 771 |
else {
|
| 772 |
if (s->aux_ts) {
|
| 773 |
qemu_mod_timer ( |
| 774 |
s->aux_ts, |
| 775 |
qemu_get_clock (vm_clock) + ticks |
| 776 |
); |
| 777 |
} |
| 778 |
} |
| 779 |
ldebug ("mix silence %d %d %" PRId64 "\n", samples, bytes, ticks); |
| 780 |
} |
| 781 |
break;
|
| 782 |
|
| 783 |
case 0xe0: |
| 784 |
d0 = dsp_get_data (s); |
| 785 |
s->out_data_len = 0;
|
| 786 |
ldebug ("E0 data = %#x\n", d0);
|
| 787 |
dsp_out_data (s, ~d0); |
| 788 |
break;
|
| 789 |
|
| 790 |
case 0xe2: |
| 791 |
d0 = dsp_get_data (s); |
| 792 |
ldebug ("E2 = %#x\n", d0);
|
| 793 |
break;
|
| 794 |
|
| 795 |
case 0xe4: |
| 796 |
s->test_reg = dsp_get_data (s); |
| 797 |
break;
|
| 798 |
|
| 799 |
case 0xf9: |
| 800 |
d0 = dsp_get_data (s); |
| 801 |
ldebug ("command 0xf9 with %#x\n", d0);
|
| 802 |
switch (d0) {
|
| 803 |
case 0x0e: |
| 804 |
dsp_out_data (s, 0xff);
|
| 805 |
break;
|
| 806 |
|
| 807 |
case 0x0f: |
| 808 |
dsp_out_data (s, 0x07);
|
| 809 |
break;
|
| 810 |
|
| 811 |
case 0x37: |
| 812 |
dsp_out_data (s, 0x38);
|
| 813 |
break;
|
| 814 |
|
| 815 |
default:
|
| 816 |
dsp_out_data (s, 0x00);
|
| 817 |
break;
|
| 818 |
} |
| 819 |
break;
|
| 820 |
|
| 821 |
default:
|
| 822 |
dolog ("complete: unrecognized command %#x\n", s->cmd);
|
| 823 |
return;
|
| 824 |
} |
| 825 |
} |
| 826 |
|
| 827 |
ldebug ("\n");
|
| 828 |
s->cmd = -1;
|
| 829 |
return;
|
| 830 |
} |
| 831 |
|
| 832 |
static void legacy_reset (SB16State *s) |
| 833 |
{
|
| 834 |
struct audsettings as;
|
| 835 |
|
| 836 |
s->freq = 11025;
|
| 837 |
s->fmt_signed = 0;
|
| 838 |
s->fmt_bits = 8;
|
| 839 |
s->fmt_stereo = 0;
|
| 840 |
|
| 841 |
as.freq = s->freq; |
| 842 |
as.nchannels = 1;
|
| 843 |
as.fmt = AUD_FMT_U8; |
| 844 |
as.endianness = 0;
|
| 845 |
|
| 846 |
s->voice = AUD_open_out ( |
| 847 |
&s->card, |
| 848 |
s->voice, |
| 849 |
"sb16",
|
| 850 |
s, |
| 851 |
SB_audio_callback, |
| 852 |
&as |
| 853 |
); |
| 854 |
|
| 855 |
/* Not sure about that... */
|
| 856 |
/* AUD_set_active_out (s->voice, 1); */
|
| 857 |
} |
| 858 |
|
| 859 |
static void reset (SB16State *s) |
| 860 |
{
|
| 861 |
qemu_irq_lower (s->pic[s->irq]); |
| 862 |
if (s->dma_auto) {
|
| 863 |
qemu_irq_raise (s->pic[s->irq]); |
| 864 |
qemu_irq_lower (s->pic[s->irq]); |
| 865 |
} |
| 866 |
|
| 867 |
s->mixer_regs[0x82] = 0; |
| 868 |
s->dma_auto = 0;
|
| 869 |
s->in_index = 0;
|
| 870 |
s->out_data_len = 0;
|
| 871 |
s->left_till_irq = 0;
|
| 872 |
s->needed_bytes = 0;
|
| 873 |
s->block_size = -1;
|
| 874 |
s->nzero = 0;
|
| 875 |
s->highspeed = 0;
|
| 876 |
s->v2x6 = 0;
|
| 877 |
s->cmd = -1;
|
| 878 |
|
| 879 |
dsp_out_data(s, 0xaa);
|
| 880 |
speaker (s, 0);
|
| 881 |
control (s, 0);
|
| 882 |
legacy_reset (s); |
| 883 |
} |
| 884 |
|
| 885 |
static IO_WRITE_PROTO (dsp_write)
|
| 886 |
{
|
| 887 |
SB16State *s = opaque; |
| 888 |
int iport;
|
| 889 |
|
| 890 |
iport = nport - s->port; |
| 891 |
|
| 892 |
ldebug ("write %#x <- %#x\n", nport, val);
|
| 893 |
switch (iport) {
|
| 894 |
case 0x06: |
| 895 |
switch (val) {
|
| 896 |
case 0x00: |
| 897 |
if (s->v2x6 == 1) { |
| 898 |
if (0 && s->highspeed) { |
| 899 |
s->highspeed = 0;
|
| 900 |
qemu_irq_lower (s->pic[s->irq]); |
| 901 |
control (s, 0);
|
| 902 |
} |
| 903 |
else {
|
| 904 |
reset (s); |
| 905 |
} |
| 906 |
} |
| 907 |
s->v2x6 = 0;
|
| 908 |
break;
|
| 909 |
|
| 910 |
case 0x01: |
| 911 |
case 0x03: /* FreeBSD kludge */ |
| 912 |
s->v2x6 = 1;
|
| 913 |
break;
|
| 914 |
|
| 915 |
case 0xc6: |
| 916 |
s->v2x6 = 0; /* Prince of Persia, csp.sys, diagnose.exe */ |
| 917 |
break;
|
| 918 |
|
| 919 |
case 0xb8: /* Panic */ |
| 920 |
reset (s); |
| 921 |
break;
|
| 922 |
|
| 923 |
case 0x39: |
| 924 |
dsp_out_data (s, 0x38);
|
| 925 |
reset (s); |
| 926 |
s->v2x6 = 0x39;
|
| 927 |
break;
|
| 928 |
|
| 929 |
default:
|
| 930 |
s->v2x6 = val; |
| 931 |
break;
|
| 932 |
} |
| 933 |
break;
|
| 934 |
|
| 935 |
case 0x0c: /* write data or command | write status */ |
| 936 |
/* if (s->highspeed) */
|
| 937 |
/* break; */
|
| 938 |
|
| 939 |
if (0 == s->needed_bytes) { |
| 940 |
command (s, val); |
| 941 |
#if 0
|
| 942 |
if (0 == s->needed_bytes) {
|
| 943 |
log_dsp (s);
|
| 944 |
}
|
| 945 |
#endif
|
| 946 |
} |
| 947 |
else {
|
| 948 |
if (s->in_index == sizeof (s->in2_data)) { |
| 949 |
dolog ("in data overrun\n");
|
| 950 |
} |
| 951 |
else {
|
| 952 |
s->in2_data[s->in_index++] = val; |
| 953 |
if (s->in_index == s->needed_bytes) {
|
| 954 |
s->needed_bytes = 0;
|
| 955 |
complete (s); |
| 956 |
#if 0
|
| 957 |
log_dsp (s);
|
| 958 |
#endif
|
| 959 |
} |
| 960 |
} |
| 961 |
} |
| 962 |
break;
|
| 963 |
|
| 964 |
default:
|
| 965 |
ldebug ("(nport=%#x, val=%#x)\n", nport, val);
|
| 966 |
break;
|
| 967 |
} |
| 968 |
} |
| 969 |
|
| 970 |
static IO_READ_PROTO (dsp_read)
|
| 971 |
{
|
| 972 |
SB16State *s = opaque; |
| 973 |
int iport, retval, ack = 0; |
| 974 |
|
| 975 |
iport = nport - s->port; |
| 976 |
|
| 977 |
switch (iport) {
|
| 978 |
case 0x06: /* reset */ |
| 979 |
retval = 0xff;
|
| 980 |
break;
|
| 981 |
|
| 982 |
case 0x0a: /* read data */ |
| 983 |
if (s->out_data_len) {
|
| 984 |
retval = s->out_data[--s->out_data_len]; |
| 985 |
s->last_read_byte = retval; |
| 986 |
} |
| 987 |
else {
|
| 988 |
if (s->cmd != -1) { |
| 989 |
dolog ("empty output buffer for command %#x\n",
|
| 990 |
s->cmd); |
| 991 |
} |
| 992 |
retval = s->last_read_byte; |
| 993 |
/* goto error; */
|
| 994 |
} |
| 995 |
break;
|
| 996 |
|
| 997 |
case 0x0c: /* 0 can write */ |
| 998 |
retval = s->can_write ? 0 : 0x80; |
| 999 |
break;
|
| 1000 |
|
| 1001 |
case 0x0d: /* timer interrupt clear */ |
| 1002 |
/* dolog ("timer interrupt clear\n"); */
|
| 1003 |
retval = 0;
|
| 1004 |
break;
|
| 1005 |
|
| 1006 |
case 0x0e: /* data available status | irq 8 ack */ |
| 1007 |
retval = (!s->out_data_len || s->highspeed) ? 0 : 0x80; |
| 1008 |
if (s->mixer_regs[0x82] & 1) { |
| 1009 |
ack = 1;
|
| 1010 |
s->mixer_regs[0x82] &= 1; |
| 1011 |
qemu_irq_lower (s->pic[s->irq]); |
| 1012 |
} |
| 1013 |
break;
|
| 1014 |
|
| 1015 |
case 0x0f: /* irq 16 ack */ |
| 1016 |
retval = 0xff;
|
| 1017 |
if (s->mixer_regs[0x82] & 2) { |
| 1018 |
ack = 1;
|
| 1019 |
s->mixer_regs[0x82] &= 2; |
| 1020 |
qemu_irq_lower (s->pic[s->irq]); |
| 1021 |
} |
| 1022 |
break;
|
| 1023 |
|
| 1024 |
default:
|
| 1025 |
goto error;
|
| 1026 |
} |
| 1027 |
|
| 1028 |
if (!ack) {
|
| 1029 |
ldebug ("read %#x -> %#x\n", nport, retval);
|
| 1030 |
} |
| 1031 |
|
| 1032 |
return retval;
|
| 1033 |
|
| 1034 |
error:
|
| 1035 |
dolog ("warning: dsp_read %#x error\n", nport);
|
| 1036 |
return 0xff; |
| 1037 |
} |
| 1038 |
|
| 1039 |
static void reset_mixer (SB16State *s) |
| 1040 |
{
|
| 1041 |
int i;
|
| 1042 |
|
| 1043 |
memset (s->mixer_regs, 0xff, 0x7f); |
| 1044 |
memset (s->mixer_regs + 0x83, 0xff, sizeof (s->mixer_regs) - 0x83); |
| 1045 |
|
| 1046 |
s->mixer_regs[0x02] = 4; /* master volume 3bits */ |
| 1047 |
s->mixer_regs[0x06] = 4; /* MIDI volume 3bits */ |
| 1048 |
s->mixer_regs[0x08] = 0; /* CD volume 3bits */ |
| 1049 |
s->mixer_regs[0x0a] = 0; /* voice volume 2bits */ |
| 1050 |
|
| 1051 |
/* d5=input filt, d3=lowpass filt, d1,d2=input source */
|
| 1052 |
s->mixer_regs[0x0c] = 0; |
| 1053 |
|
| 1054 |
/* d5=output filt, d1=stereo switch */
|
| 1055 |
s->mixer_regs[0x0e] = 0; |
| 1056 |
|
| 1057 |
/* voice volume L d5,d7, R d1,d3 */
|
| 1058 |
s->mixer_regs[0x04] = (4 << 5) | (4 << 1); |
| 1059 |
/* master ... */
|
| 1060 |
s->mixer_regs[0x22] = (4 << 5) | (4 << 1); |
| 1061 |
/* MIDI ... */
|
| 1062 |
s->mixer_regs[0x26] = (4 << 5) | (4 << 1); |
| 1063 |
|
| 1064 |
for (i = 0x30; i < 0x48; i++) { |
| 1065 |
s->mixer_regs[i] = 0x20;
|
| 1066 |
} |
| 1067 |
} |
| 1068 |
|
| 1069 |
static IO_WRITE_PROTO(mixer_write_indexb)
|
| 1070 |
{
|
| 1071 |
SB16State *s = opaque; |
| 1072 |
(void) nport;
|
| 1073 |
s->mixer_nreg = val; |
| 1074 |
} |
| 1075 |
|
| 1076 |
static IO_WRITE_PROTO(mixer_write_datab)
|
| 1077 |
{
|
| 1078 |
SB16State *s = opaque; |
| 1079 |
|
| 1080 |
(void) nport;
|
| 1081 |
ldebug ("mixer_write [%#x] <- %#x\n", s->mixer_nreg, val);
|
| 1082 |
|
| 1083 |
switch (s->mixer_nreg) {
|
| 1084 |
case 0x00: |
| 1085 |
reset_mixer (s); |
| 1086 |
break;
|
| 1087 |
|
| 1088 |
case 0x80: |
| 1089 |
{
|
| 1090 |
int irq = irq_of_magic (val);
|
| 1091 |
ldebug ("setting irq to %d (val=%#x)\n", irq, val);
|
| 1092 |
if (irq > 0) { |
| 1093 |
s->irq = irq; |
| 1094 |
} |
| 1095 |
} |
| 1096 |
break;
|
| 1097 |
|
| 1098 |
case 0x81: |
| 1099 |
{
|
| 1100 |
int dma, hdma;
|
| 1101 |
|
| 1102 |
dma = lsbindex (val & 0xf);
|
| 1103 |
hdma = lsbindex (val & 0xf0);
|
| 1104 |
if (dma != s->dma || hdma != s->hdma) {
|
| 1105 |
dolog ( |
| 1106 |
"attempt to change DMA "
|
| 1107 |
"8bit %d(%d), 16bit %d(%d) (val=%#x)\n",
|
| 1108 |
dma, s->dma, hdma, s->hdma, val); |
| 1109 |
} |
| 1110 |
#if 0
|
| 1111 |
s->dma = dma;
|
| 1112 |
s->hdma = hdma;
|
| 1113 |
#endif
|
| 1114 |
} |
| 1115 |
break;
|
| 1116 |
|
| 1117 |
case 0x82: |
| 1118 |
dolog ("attempt to write into IRQ status register (val=%#x)\n",
|
| 1119 |
val); |
| 1120 |
return;
|
| 1121 |
|
| 1122 |
default:
|
| 1123 |
if (s->mixer_nreg >= 0x80) { |
| 1124 |
ldebug ("attempt to write mixer[%#x] <- %#x\n", s->mixer_nreg, val);
|
| 1125 |
} |
| 1126 |
break;
|
| 1127 |
} |
| 1128 |
|
| 1129 |
s->mixer_regs[s->mixer_nreg] = val; |
| 1130 |
} |
| 1131 |
|
| 1132 |
static IO_WRITE_PROTO(mixer_write_indexw)
|
| 1133 |
{
|
| 1134 |
mixer_write_indexb (opaque, nport, val & 0xff);
|
| 1135 |
mixer_write_datab (opaque, nport, (val >> 8) & 0xff); |
| 1136 |
} |
| 1137 |
|
| 1138 |
static IO_READ_PROTO(mixer_read)
|
| 1139 |
{
|
| 1140 |
SB16State *s = opaque; |
| 1141 |
|
| 1142 |
(void) nport;
|
| 1143 |
#ifndef DEBUG_SB16_MOST
|
| 1144 |
if (s->mixer_nreg != 0x82) { |
| 1145 |
ldebug ("mixer_read[%#x] -> %#x\n",
|
| 1146 |
s->mixer_nreg, s->mixer_regs[s->mixer_nreg]); |
| 1147 |
} |
| 1148 |
#else
|
| 1149 |
ldebug ("mixer_read[%#x] -> %#x\n",
|
| 1150 |
s->mixer_nreg, s->mixer_regs[s->mixer_nreg]); |
| 1151 |
#endif
|
| 1152 |
return s->mixer_regs[s->mixer_nreg];
|
| 1153 |
} |
| 1154 |
|
| 1155 |
static int write_audio (SB16State *s, int nchan, int dma_pos, |
| 1156 |
int dma_len, int len) |
| 1157 |
{
|
| 1158 |
int temp, net;
|
| 1159 |
uint8_t tmpbuf[4096];
|
| 1160 |
|
| 1161 |
temp = len; |
| 1162 |
net = 0;
|
| 1163 |
|
| 1164 |
while (temp) {
|
| 1165 |
int left = dma_len - dma_pos;
|
| 1166 |
int copied;
|
| 1167 |
size_t to_copy; |
| 1168 |
|
| 1169 |
to_copy = audio_MIN (temp, left); |
| 1170 |
if (to_copy > sizeof (tmpbuf)) { |
| 1171 |
to_copy = sizeof (tmpbuf);
|
| 1172 |
} |
| 1173 |
|
| 1174 |
copied = DMA_read_memory (nchan, tmpbuf, dma_pos, to_copy); |
| 1175 |
copied = AUD_write (s->voice, tmpbuf, copied); |
| 1176 |
|
| 1177 |
temp -= copied; |
| 1178 |
dma_pos = (dma_pos + copied) % dma_len; |
| 1179 |
net += copied; |
| 1180 |
|
| 1181 |
if (!copied) {
|
| 1182 |
break;
|
| 1183 |
} |
| 1184 |
} |
| 1185 |
|
| 1186 |
return net;
|
| 1187 |
} |
| 1188 |
|
| 1189 |
static int SB_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len) |
| 1190 |
{
|
| 1191 |
SB16State *s = opaque; |
| 1192 |
int till, copy, written, free;
|
| 1193 |
|
| 1194 |
if (s->block_size <= 0) { |
| 1195 |
dolog ("invalid block size=%d nchan=%d dma_pos=%d dma_len=%d\n",
|
| 1196 |
s->block_size, nchan, dma_pos, dma_len); |
| 1197 |
return dma_pos;
|
| 1198 |
} |
| 1199 |
|
| 1200 |
if (s->left_till_irq < 0) { |
| 1201 |
s->left_till_irq = s->block_size; |
| 1202 |
} |
| 1203 |
|
| 1204 |
if (s->voice) {
|
| 1205 |
free = s->audio_free & ~s->align; |
| 1206 |
if ((free <= 0) || !dma_len) { |
| 1207 |
return dma_pos;
|
| 1208 |
} |
| 1209 |
} |
| 1210 |
else {
|
| 1211 |
free = dma_len; |
| 1212 |
} |
| 1213 |
|
| 1214 |
copy = free; |
| 1215 |
till = s->left_till_irq; |
| 1216 |
|
| 1217 |
#ifdef DEBUG_SB16_MOST
|
| 1218 |
dolog ("pos:%06d %d till:%d len:%d\n",
|
| 1219 |
dma_pos, free, till, dma_len); |
| 1220 |
#endif
|
| 1221 |
|
| 1222 |
if (till <= copy) {
|
| 1223 |
if (0 == s->dma_auto) { |
| 1224 |
copy = till; |
| 1225 |
} |
| 1226 |
} |
| 1227 |
|
| 1228 |
written = write_audio (s, nchan, dma_pos, dma_len, copy); |
| 1229 |
dma_pos = (dma_pos + written) % dma_len; |
| 1230 |
s->left_till_irq -= written; |
| 1231 |
|
| 1232 |
if (s->left_till_irq <= 0) { |
| 1233 |
s->mixer_regs[0x82] |= (nchan & 4) ? 2 : 1; |
| 1234 |
qemu_irq_raise (s->pic[s->irq]); |
| 1235 |
if (0 == s->dma_auto) { |
| 1236 |
control (s, 0);
|
| 1237 |
speaker (s, 0);
|
| 1238 |
} |
| 1239 |
} |
| 1240 |
|
| 1241 |
#ifdef DEBUG_SB16_MOST
|
| 1242 |
ldebug ("pos %5d free %5d size %5d till % 5d copy %5d written %5d size %5d\n",
|
| 1243 |
dma_pos, free, dma_len, s->left_till_irq, copy, written, |
| 1244 |
s->block_size); |
| 1245 |
#endif
|
| 1246 |
|
| 1247 |
while (s->left_till_irq <= 0) { |
| 1248 |
s->left_till_irq = s->block_size + s->left_till_irq; |
| 1249 |
} |
| 1250 |
|
| 1251 |
return dma_pos;
|
| 1252 |
} |
| 1253 |
|
| 1254 |
static void SB_audio_callback (void *opaque, int free) |
| 1255 |
{
|
| 1256 |
SB16State *s = opaque; |
| 1257 |
s->audio_free = free; |
| 1258 |
} |
| 1259 |
|
| 1260 |
static void SB_save (QEMUFile *f, void *opaque) |
| 1261 |
{
|
| 1262 |
SB16State *s = opaque; |
| 1263 |
|
| 1264 |
qemu_put_be32 (f, s->irq); |
| 1265 |
qemu_put_be32 (f, s->dma); |
| 1266 |
qemu_put_be32 (f, s->hdma); |
| 1267 |
qemu_put_be32 (f, s->port); |
| 1268 |
qemu_put_be32 (f, s->ver); |
| 1269 |
qemu_put_be32 (f, s->in_index); |
| 1270 |
qemu_put_be32 (f, s->out_data_len); |
| 1271 |
qemu_put_be32 (f, s->fmt_stereo); |
| 1272 |
qemu_put_be32 (f, s->fmt_signed); |
| 1273 |
qemu_put_be32 (f, s->fmt_bits); |
| 1274 |
qemu_put_be32s (f, &s->fmt); |
| 1275 |
qemu_put_be32 (f, s->dma_auto); |
| 1276 |
qemu_put_be32 (f, s->block_size); |
| 1277 |
qemu_put_be32 (f, s->fifo); |
| 1278 |
qemu_put_be32 (f, s->freq); |
| 1279 |
qemu_put_be32 (f, s->time_const); |
| 1280 |
qemu_put_be32 (f, s->speaker); |
| 1281 |
qemu_put_be32 (f, s->needed_bytes); |
| 1282 |
qemu_put_be32 (f, s->cmd); |
| 1283 |
qemu_put_be32 (f, s->use_hdma); |
| 1284 |
qemu_put_be32 (f, s->highspeed); |
| 1285 |
qemu_put_be32 (f, s->can_write); |
| 1286 |
qemu_put_be32 (f, s->v2x6); |
| 1287 |
|
| 1288 |
qemu_put_8s (f, &s->csp_param); |
| 1289 |
qemu_put_8s (f, &s->csp_value); |
| 1290 |
qemu_put_8s (f, &s->csp_mode); |
| 1291 |
qemu_put_8s (f, &s->csp_param); |
| 1292 |
qemu_put_buffer (f, s->csp_regs, 256);
|
| 1293 |
qemu_put_8s (f, &s->csp_index); |
| 1294 |
qemu_put_buffer (f, s->csp_reg83, 4);
|
| 1295 |
qemu_put_be32 (f, s->csp_reg83r); |
| 1296 |
qemu_put_be32 (f, s->csp_reg83w); |
| 1297 |
|
| 1298 |
qemu_put_buffer (f, s->in2_data, sizeof (s->in2_data));
|
| 1299 |
qemu_put_buffer (f, s->out_data, sizeof (s->out_data));
|
| 1300 |
qemu_put_8s (f, &s->test_reg); |
| 1301 |
qemu_put_8s (f, &s->last_read_byte); |
| 1302 |
|
| 1303 |
qemu_put_be32 (f, s->nzero); |
| 1304 |
qemu_put_be32 (f, s->left_till_irq); |
| 1305 |
qemu_put_be32 (f, s->dma_running); |
| 1306 |
qemu_put_be32 (f, s->bytes_per_second); |
| 1307 |
qemu_put_be32 (f, s->align); |
| 1308 |
|
| 1309 |
qemu_put_be32 (f, s->mixer_nreg); |
| 1310 |
qemu_put_buffer (f, s->mixer_regs, 256);
|
| 1311 |
} |
| 1312 |
|
| 1313 |
static int SB_load (QEMUFile *f, void *opaque, int version_id) |
| 1314 |
{
|
| 1315 |
SB16State *s = opaque; |
| 1316 |
|
| 1317 |
if (version_id != 1) { |
| 1318 |
return -EINVAL;
|
| 1319 |
} |
| 1320 |
|
| 1321 |
s->irq=qemu_get_be32 (f); |
| 1322 |
s->dma=qemu_get_be32 (f); |
| 1323 |
s->hdma=qemu_get_be32 (f); |
| 1324 |
s->port=qemu_get_be32 (f); |
| 1325 |
s->ver=qemu_get_be32 (f); |
| 1326 |
s->in_index=qemu_get_be32 (f); |
| 1327 |
s->out_data_len=qemu_get_be32 (f); |
| 1328 |
s->fmt_stereo=qemu_get_be32 (f); |
| 1329 |
s->fmt_signed=qemu_get_be32 (f); |
| 1330 |
s->fmt_bits=qemu_get_be32 (f); |
| 1331 |
qemu_get_be32s (f, &s->fmt); |
| 1332 |
s->dma_auto=qemu_get_be32 (f); |
| 1333 |
s->block_size=qemu_get_be32 (f); |
| 1334 |
s->fifo=qemu_get_be32 (f); |
| 1335 |
s->freq=qemu_get_be32 (f); |
| 1336 |
s->time_const=qemu_get_be32 (f); |
| 1337 |
s->speaker=qemu_get_be32 (f); |
| 1338 |
s->needed_bytes=qemu_get_be32 (f); |
| 1339 |
s->cmd=qemu_get_be32 (f); |
| 1340 |
s->use_hdma=qemu_get_be32 (f); |
| 1341 |
s->highspeed=qemu_get_be32 (f); |
| 1342 |
s->can_write=qemu_get_be32 (f); |
| 1343 |
s->v2x6=qemu_get_be32 (f); |
| 1344 |
|
| 1345 |
qemu_get_8s (f, &s->csp_param); |
| 1346 |
qemu_get_8s (f, &s->csp_value); |
| 1347 |
qemu_get_8s (f, &s->csp_mode); |
| 1348 |
qemu_get_8s (f, &s->csp_param); |
| 1349 |
qemu_get_buffer (f, s->csp_regs, 256);
|
| 1350 |
qemu_get_8s (f, &s->csp_index); |
| 1351 |
qemu_get_buffer (f, s->csp_reg83, 4);
|
| 1352 |
s->csp_reg83r=qemu_get_be32 (f); |
| 1353 |
s->csp_reg83w=qemu_get_be32 (f); |
| 1354 |
|
| 1355 |
qemu_get_buffer (f, s->in2_data, sizeof (s->in2_data));
|
| 1356 |
qemu_get_buffer (f, s->out_data, sizeof (s->out_data));
|
| 1357 |
qemu_get_8s (f, &s->test_reg); |
| 1358 |
qemu_get_8s (f, &s->last_read_byte); |
| 1359 |
|
| 1360 |
s->nzero=qemu_get_be32 (f); |
| 1361 |
s->left_till_irq=qemu_get_be32 (f); |
| 1362 |
s->dma_running=qemu_get_be32 (f); |
| 1363 |
s->bytes_per_second=qemu_get_be32 (f); |
| 1364 |
s->align=qemu_get_be32 (f); |
| 1365 |
|
| 1366 |
s->mixer_nreg=qemu_get_be32 (f); |
| 1367 |
qemu_get_buffer (f, s->mixer_regs, 256);
|
| 1368 |
|
| 1369 |
if (s->voice) {
|
| 1370 |
AUD_close_out (&s->card, s->voice); |
| 1371 |
s->voice = NULL;
|
| 1372 |
} |
| 1373 |
|
| 1374 |
if (s->dma_running) {
|
| 1375 |
if (s->freq) {
|
| 1376 |
struct audsettings as;
|
| 1377 |
|
| 1378 |
s->audio_free = 0;
|
| 1379 |
|
| 1380 |
as.freq = s->freq; |
| 1381 |
as.nchannels = 1 << s->fmt_stereo;
|
| 1382 |
as.fmt = s->fmt; |
| 1383 |
as.endianness = 0;
|
| 1384 |
|
| 1385 |
s->voice = AUD_open_out ( |
| 1386 |
&s->card, |
| 1387 |
s->voice, |
| 1388 |
"sb16",
|
| 1389 |
s, |
| 1390 |
SB_audio_callback, |
| 1391 |
&as |
| 1392 |
); |
| 1393 |
} |
| 1394 |
|
| 1395 |
control (s, 1);
|
| 1396 |
speaker (s, s->speaker); |
| 1397 |
} |
| 1398 |
return 0; |
| 1399 |
} |
| 1400 |
|
| 1401 |
int SB16_init (qemu_irq *pic)
|
| 1402 |
{
|
| 1403 |
AudioState *audio = AUD_init(); |
| 1404 |
SB16State *s; |
| 1405 |
int i;
|
| 1406 |
static const uint8_t dsp_write_ports[] = {0x6, 0xc}; |
| 1407 |
static const uint8_t dsp_read_ports[] = {0x6, 0xa, 0xc, 0xd, 0xe, 0xf}; |
| 1408 |
|
| 1409 |
s = qemu_mallocz (sizeof (*s));
|
| 1410 |
|
| 1411 |
s->cmd = -1;
|
| 1412 |
s->pic = pic; |
| 1413 |
s->irq = conf.irq; |
| 1414 |
s->dma = conf.dma; |
| 1415 |
s->hdma = conf.hdma; |
| 1416 |
s->port = conf.port; |
| 1417 |
s->ver = conf.ver_lo | (conf.ver_hi << 8);
|
| 1418 |
|
| 1419 |
s->mixer_regs[0x80] = magic_of_irq (s->irq);
|
| 1420 |
s->mixer_regs[0x81] = (1 << s->dma) | (1 << s->hdma); |
| 1421 |
s->mixer_regs[0x82] = 2 << 5; |
| 1422 |
|
| 1423 |
s->csp_regs[5] = 1; |
| 1424 |
s->csp_regs[9] = 0xf8; |
| 1425 |
|
| 1426 |
reset_mixer (s); |
| 1427 |
s->aux_ts = qemu_new_timer (vm_clock, aux_timer, s); |
| 1428 |
if (!s->aux_ts) {
|
| 1429 |
dolog ("warning: Could not create auxiliary timer\n");
|
| 1430 |
} |
| 1431 |
|
| 1432 |
for (i = 0; i < ARRAY_SIZE (dsp_write_ports); i++) { |
| 1433 |
register_ioport_write (s->port + dsp_write_ports[i], 1, 1, dsp_write, s); |
| 1434 |
} |
| 1435 |
|
| 1436 |
for (i = 0; i < ARRAY_SIZE (dsp_read_ports); i++) { |
| 1437 |
register_ioport_read (s->port + dsp_read_ports[i], 1, 1, dsp_read, s); |
| 1438 |
} |
| 1439 |
|
| 1440 |
register_ioport_write (s->port + 0x4, 1, 1, mixer_write_indexb, s); |
| 1441 |
register_ioport_write (s->port + 0x4, 1, 2, mixer_write_indexw, s); |
| 1442 |
register_ioport_read (s->port + 0x5, 1, 1, mixer_read, s); |
| 1443 |
register_ioport_write (s->port + 0x5, 1, 1, mixer_write_datab, s); |
| 1444 |
|
| 1445 |
DMA_register_channel (s->hdma, SB_read_DMA, s); |
| 1446 |
DMA_register_channel (s->dma, SB_read_DMA, s); |
| 1447 |
s->can_write = 1;
|
| 1448 |
|
| 1449 |
register_savevm ("sb16", 0, 1, SB_save, SB_load, s); |
| 1450 |
AUD_register_card (audio, "sb16", &s->card);
|
| 1451 |
return 0; |
| 1452 |
} |