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/*
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* QEMU Soundblaster 16 emulation
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*
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* Copyright (c) 2003 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 "vl.h" |
25 |
|
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#define MIN(a, b) ((a)>(b)?(b):(a))
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#define LENOFA(a) ((int) (sizeof(a)/sizeof(a[0]))) |
28 |
|
29 |
#define DEREF(x) (void)x |
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#define log(...) fprintf (stderr, "sb16: " __VA_ARGS__) |
31 |
|
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/* #define DEBUG_SB16 */
|
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#ifdef DEBUG_SB16
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#define lwarn(...) fprintf (stderr, "sb16: " __VA_ARGS__) |
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#define linfo(...) fprintf (stderr, "sb16: " __VA_ARGS__) |
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#define ldebug(...) fprintf (stderr, "sb16: " __VA_ARGS__) |
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#else
|
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#define lwarn(...)
|
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#define linfo(...)
|
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#define ldebug(...)
|
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#endif
|
42 |
|
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#define IO_READ_PROTO(name) \
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uint32_t name (void *opaque, uint32_t nport)
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#define IO_WRITE_PROTO(name) \
|
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void name (void *opaque, uint32_t nport, uint32_t val) |
47 |
|
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static struct { |
49 |
int ver_lo;
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int ver_hi;
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int irq;
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int dma;
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int hdma;
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int port;
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int mix_block;
|
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} sb = {5, 4, 5, 1, 5, 0x220, -1}; |
57 |
|
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static int mix_block, noirq; |
59 |
|
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typedef struct SB16State { |
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int in_index;
|
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int out_data_len;
|
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int fmt_stereo;
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int fmt_signed;
|
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int fmt_bits;
|
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int dma_auto;
|
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int dma_buffer_size;
|
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int fifo;
|
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int freq;
|
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int time_const;
|
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int speaker;
|
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int needed_bytes;
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int cmd;
|
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int dma_pos;
|
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int use_hdma;
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76 |
|
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int v2x6;
|
78 |
|
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uint8_t in_data[10];
|
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uint8_t out_data[10];
|
81 |
|
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int left_till_irq;
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83 |
|
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/* mixer state */
|
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int mixer_nreg;
|
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uint8_t mixer_regs[0x83];
|
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} SB16State; |
88 |
|
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/* XXX: suppress that and use a context */
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static struct SB16State dsp; |
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|
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static void log_dsp (SB16State *dsp) |
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{ |
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linfo ("%c:%c:%d:%c:dmabuf=%d:pos=%d:freq=%d:timeconst=%d:speaker=%d\n",
|
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dsp->fmt_stereo ? 'S' : 'M', |
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dsp->fmt_signed ? 'S' : 'U', |
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dsp->fmt_bits, |
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dsp->dma_auto ? 'a' : 's', |
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dsp->dma_buffer_size, |
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dsp->dma_pos, |
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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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|
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static void control (int hold) |
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{ |
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linfo ("%d high %d\n", hold, dsp.use_hdma);
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if (hold) {
|
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if (dsp.use_hdma)
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DMA_hold_DREQ (sb.hdma); |
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else
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DMA_hold_DREQ (sb.dma); |
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} |
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else {
|
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if (dsp.use_hdma)
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DMA_release_DREQ (sb.hdma); |
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else
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DMA_release_DREQ (sb.dma); |
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} |
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} |
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|
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static void dma_cmd (uint8_t cmd, uint8_t d0, int dma_len) |
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{ |
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int bps;
|
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audfmt_e fmt; |
127 |
|
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dsp.use_hdma = cmd < 0xc0;
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dsp.fifo = (cmd >> 1) & 1; |
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dsp.dma_auto = (cmd >> 2) & 1; |
131 |
|
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switch (cmd >> 4) { |
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case 11: |
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dsp.fmt_bits = 16;
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break;
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|
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case 12: |
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dsp.fmt_bits = 8;
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break;
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} |
141 |
|
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dsp.fmt_signed = (d0 >> 4) & 1; |
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dsp.fmt_stereo = (d0 >> 5) & 1; |
144 |
|
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if (-1 != dsp.time_const) { |
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int tmp;
|
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|
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tmp = 256 - dsp.time_const;
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dsp.freq = (1000000 + (tmp / 2)) / tmp; |
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} |
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bps = 1 << (16 == dsp.fmt_bits); |
152 |
|
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if (-1 != dma_len) |
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dsp.dma_buffer_size = (dma_len + 1) * bps;
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|
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linfo ("frequency %d, stereo %d, signed %d, bits %d, size %d, auto %d\n",
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dsp.freq, dsp.fmt_stereo, dsp.fmt_signed, dsp.fmt_bits, |
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dsp.dma_buffer_size, dsp.dma_auto); |
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|
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if (16 == dsp.fmt_bits) { |
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if (dsp.fmt_signed) {
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fmt = AUD_FMT_S16; |
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} |
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else {
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fmt = AUD_FMT_U16; |
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} |
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} |
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else {
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if (dsp.fmt_signed) {
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fmt = AUD_FMT_S8; |
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} |
172 |
else {
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fmt = AUD_FMT_U8; |
174 |
} |
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} |
176 |
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dsp.dma_pos = 0;
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dsp.left_till_irq = dsp.dma_buffer_size; |
179 |
|
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if (sb.mix_block) {
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mix_block = sb.mix_block; |
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} |
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else {
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int align;
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align = bps << dsp.fmt_stereo; |
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mix_block = ((dsp.freq * align) / 100) & ~(align - 1); |
188 |
} |
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AUD_reset (dsp.freq, 1 << dsp.fmt_stereo, fmt);
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control (1);
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dsp.speaker = 1;
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} |
194 |
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static void command (SB16State *dsp, uint8_t cmd) |
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{ |
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linfo ("%#x\n", cmd);
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if (cmd > 0xaf && cmd < 0xd0) { |
200 |
if (cmd & 8) |
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goto error;
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switch (cmd >> 4) { |
204 |
case 11: |
205 |
case 12: |
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break;
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default:
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log("%#x wrong bits", cmd);
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goto error;
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} |
211 |
dsp->needed_bytes = 3;
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} |
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else {
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switch (cmd) {
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case 0x00: |
216 |
case 0x03: |
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case 0xe7: |
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/* IMS uses those when probing for sound devices */
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return;
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|
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case 0x10: |
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dsp->needed_bytes = 1;
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break;
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224 |
|
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case 0x14: |
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dsp->needed_bytes = 2;
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dsp->dma_buffer_size = 0;
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break;
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229 |
|
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case 0x20: |
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dsp->out_data[dsp->out_data_len++] = 0xff;
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break;
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|
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case 0x35: |
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lwarn ("MIDI commands not implemented\n");
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break;
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237 |
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case 0x40: |
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dsp->freq = -1;
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dsp->time_const = -1;
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dsp->needed_bytes = 1;
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break;
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case 0x41: |
245 |
case 0x42: |
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dsp->freq = -1;
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dsp->time_const = -1;
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dsp->needed_bytes = 2;
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break;
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|
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case 0x47: /* Continue Auto-Initialize DMA 16bit */ |
252 |
break;
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|
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case 0x48: |
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dsp->needed_bytes = 2;
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break;
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257 |
|
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case 0x27: /* ????????? */ |
259 |
case 0x4e: |
260 |
return;
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261 |
|
262 |
case 0x80: |
263 |
cmd = -1;
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break;
|
265 |
|
266 |
case 0x90: |
267 |
case 0x91: |
268 |
{ |
269 |
uint8_t d0; |
270 |
|
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d0 = 4;
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if (dsp->fmt_signed) d0 |= 16; |
273 |
if (dsp->fmt_stereo) d0 |= 32; |
274 |
dma_cmd (cmd == 0x90 ? 0xc4 : 0xc0, d0, -1); |
275 |
cmd = -1;
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break;
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} |
278 |
|
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case 0xd0: /* XXX */ |
280 |
control (0);
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return;
|
282 |
|
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case 0xd1: |
284 |
dsp->speaker = 1;
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break;
|
286 |
|
287 |
case 0xd3: |
288 |
dsp->speaker = 0;
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return;
|
290 |
|
291 |
case 0xd4: |
292 |
control (1);
|
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break;
|
294 |
|
295 |
case 0xd5: |
296 |
control (0);
|
297 |
break;
|
298 |
|
299 |
case 0xd6: |
300 |
control (1);
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break;
|
302 |
|
303 |
case 0xd9: |
304 |
control (0);
|
305 |
dsp->dma_auto = 0;
|
306 |
return;
|
307 |
|
308 |
case 0xda: |
309 |
control (0);
|
310 |
dsp->dma_auto = 0;
|
311 |
break;
|
312 |
|
313 |
case 0xe0: |
314 |
dsp->needed_bytes = 1;
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315 |
break;
|
316 |
|
317 |
case 0xe1: |
318 |
dsp->out_data[dsp->out_data_len++] = sb.ver_lo; |
319 |
dsp->out_data[dsp->out_data_len++] = sb.ver_hi; |
320 |
return;
|
321 |
|
322 |
case 0xf2: |
323 |
dsp->out_data[dsp->out_data_len++] = 0xaa;
|
324 |
dsp->mixer_regs[0x82] |= dsp->mixer_regs[0x80]; |
325 |
pic_set_irq (sb.irq, 1);
|
326 |
return;
|
327 |
|
328 |
default:
|
329 |
log("%#x is unknown", cmd);
|
330 |
goto error;
|
331 |
} |
332 |
} |
333 |
dsp->cmd = cmd; |
334 |
return;
|
335 |
|
336 |
error:
|
337 |
return;
|
338 |
} |
339 |
|
340 |
static void complete (SB16State *dsp) |
341 |
{ |
342 |
linfo ("complete command %#x, in_index %d, needed_bytes %d\n",
|
343 |
dsp->cmd, dsp->in_index, dsp->needed_bytes); |
344 |
|
345 |
if (dsp->cmd > 0xaf && dsp->cmd < 0xd0) { |
346 |
int d0, d1, d2;
|
347 |
|
348 |
d0 = dsp->in_data[0];
|
349 |
d1 = dsp->in_data[1];
|
350 |
d2 = dsp->in_data[2];
|
351 |
|
352 |
ldebug ("d0 = %d, d1 = %d, d2 = %d\n",
|
353 |
d0, d1, d2); |
354 |
dma_cmd (dsp->cmd, d0, d1 + (d2 << 8));
|
355 |
} |
356 |
else {
|
357 |
switch (dsp->cmd) {
|
358 |
|
359 |
case 0x10: |
360 |
break;
|
361 |
|
362 |
case 0x14: |
363 |
{ |
364 |
int d0, d1;
|
365 |
int save_left;
|
366 |
int save_pos;
|
367 |
|
368 |
d0 = dsp->in_data[0];
|
369 |
d1 = dsp->in_data[1];
|
370 |
|
371 |
save_left = dsp->left_till_irq; |
372 |
save_pos = dsp->dma_pos; |
373 |
dma_cmd (0xc0, 0, d0 + (d1 << 8)); |
374 |
dsp->left_till_irq = save_left; |
375 |
dsp->dma_pos = save_pos; |
376 |
|
377 |
linfo ("set buffer size data[%d, %d] %d pos %d\n",
|
378 |
d0, d1, dsp->dma_buffer_size, dsp->dma_pos); |
379 |
break;
|
380 |
} |
381 |
|
382 |
case 0x40: |
383 |
dsp->time_const = dsp->in_data[0];
|
384 |
linfo ("set time const %d\n", dsp->time_const);
|
385 |
break;
|
386 |
|
387 |
case 0x41: |
388 |
case 0x42: |
389 |
dsp->freq = dsp->in_data[1] + (dsp->in_data[0] << 8); |
390 |
linfo ("set freq %#x, %#x = %d\n",
|
391 |
dsp->in_data[1], dsp->in_data[0], dsp->freq); |
392 |
break;
|
393 |
|
394 |
case 0x48: |
395 |
dsp->dma_buffer_size = dsp->in_data[1] + (dsp->in_data[0] << 8); |
396 |
linfo ("set dma len %#x, %#x = %d\n",
|
397 |
dsp->in_data[1], dsp->in_data[0], dsp->dma_buffer_size); |
398 |
break;
|
399 |
|
400 |
case 0xe0: |
401 |
dsp->out_data_len = 1;
|
402 |
linfo ("data = %#x\n", dsp->in_data[0]); |
403 |
dsp->out_data[0] = dsp->in_data[0] ^ 0xff; |
404 |
break;
|
405 |
|
406 |
default:
|
407 |
log ("unrecognized command %#x", dsp->cmd);
|
408 |
return;
|
409 |
} |
410 |
} |
411 |
|
412 |
dsp->cmd = -1;
|
413 |
return;
|
414 |
} |
415 |
|
416 |
static IO_WRITE_PROTO (dsp_write)
|
417 |
{ |
418 |
SB16State *dsp = opaque; |
419 |
int iport;
|
420 |
|
421 |
iport = nport - sb.port; |
422 |
|
423 |
switch (iport) {
|
424 |
case 0x6: |
425 |
if (0 == val) |
426 |
dsp->v2x6 = 0;
|
427 |
else if ((1 == val) && (0 == dsp->v2x6)) { |
428 |
dsp->v2x6 = 1;
|
429 |
dsp->out_data[dsp->out_data_len++] = 0xaa;
|
430 |
} |
431 |
else
|
432 |
dsp->v2x6 = ~0;
|
433 |
break;
|
434 |
|
435 |
case 0xc: /* write data or command | write status */ |
436 |
if (0 == dsp->needed_bytes) { |
437 |
command (dsp, val); |
438 |
if (0 == dsp->needed_bytes) { |
439 |
log_dsp (dsp); |
440 |
} |
441 |
} |
442 |
else {
|
443 |
dsp->in_data[dsp->in_index++] = val; |
444 |
if (dsp->in_index == dsp->needed_bytes) {
|
445 |
dsp->needed_bytes = 0;
|
446 |
dsp->in_index = 0;
|
447 |
complete (dsp); |
448 |
log_dsp (dsp); |
449 |
} |
450 |
} |
451 |
break;
|
452 |
|
453 |
default:
|
454 |
log ("(nport=%#x, val=%#x)", nport, val);
|
455 |
break;
|
456 |
} |
457 |
} |
458 |
|
459 |
static IO_READ_PROTO (dsp_read)
|
460 |
{ |
461 |
SB16State *dsp = opaque; |
462 |
int iport, retval;
|
463 |
|
464 |
iport = nport - sb.port; |
465 |
|
466 |
switch (iport) {
|
467 |
|
468 |
case 0x6: /* reset */ |
469 |
return 0; |
470 |
|
471 |
case 0xa: /* read data */ |
472 |
if (dsp->out_data_len) {
|
473 |
retval = dsp->out_data[--dsp->out_data_len]; |
474 |
} else {
|
475 |
log("empty output buffer\n");
|
476 |
goto error;
|
477 |
} |
478 |
break;
|
479 |
|
480 |
case 0xc: /* 0 can write */ |
481 |
retval = 0;
|
482 |
break;
|
483 |
|
484 |
case 0xd: /* timer interrupt clear */ |
485 |
log("timer interrupt clear\n");
|
486 |
goto error;
|
487 |
|
488 |
case 0xe: /* data available status | irq 8 ack */ |
489 |
/* XXX drop pic irq line here? */
|
490 |
ldebug ("8 ack\n");
|
491 |
retval = (0 == dsp->out_data_len) ? 0 : 0x80; |
492 |
dsp->mixer_regs[0x82] &= ~dsp->mixer_regs[0x80]; |
493 |
pic_set_irq (sb.irq, 0);
|
494 |
break;
|
495 |
|
496 |
case 0xf: /* irq 16 ack */ |
497 |
/* XXX drop pic irq line here? */
|
498 |
ldebug ("16 ack\n");
|
499 |
retval = 0xff;
|
500 |
dsp->mixer_regs[0x82] &= ~dsp->mixer_regs[0x80]; |
501 |
pic_set_irq (sb.irq, 0);
|
502 |
break;
|
503 |
|
504 |
default:
|
505 |
goto error;
|
506 |
} |
507 |
|
508 |
if ((0xc != iport) && (0xe != iport)) { |
509 |
ldebug ("nport=%#x iport %#x = %#x\n",
|
510 |
nport, iport, retval); |
511 |
} |
512 |
|
513 |
return retval;
|
514 |
|
515 |
error:
|
516 |
return 0; |
517 |
} |
518 |
|
519 |
static IO_WRITE_PROTO(mixer_write_indexb)
|
520 |
{ |
521 |
SB16State *dsp = opaque; |
522 |
dsp->mixer_nreg = val & 0xff;
|
523 |
} |
524 |
|
525 |
static IO_WRITE_PROTO(mixer_write_datab)
|
526 |
{ |
527 |
SB16State *dsp = opaque; |
528 |
dsp->mixer_regs[dsp->mixer_nreg] = val; |
529 |
} |
530 |
|
531 |
static IO_WRITE_PROTO(mixer_write_indexw)
|
532 |
{ |
533 |
mixer_write_indexb (opaque, nport, val & 0xff);
|
534 |
mixer_write_datab (opaque, nport, (val >> 8) & 0xff); |
535 |
} |
536 |
|
537 |
static IO_READ_PROTO(mixer_read)
|
538 |
{ |
539 |
SB16State *dsp = opaque; |
540 |
return dsp->mixer_regs[dsp->mixer_nreg];
|
541 |
} |
542 |
|
543 |
void SB16_run (void) |
544 |
{ |
545 |
if (0 == dsp.speaker) |
546 |
return;
|
547 |
|
548 |
AUD_run (); |
549 |
} |
550 |
|
551 |
static int write_audio (uint32_t addr, int len, int size) |
552 |
{ |
553 |
int temp, net;
|
554 |
uint8_t tmpbuf[4096];
|
555 |
|
556 |
temp = size; |
557 |
|
558 |
net = 0;
|
559 |
|
560 |
while (temp) {
|
561 |
int left_till_end;
|
562 |
int to_copy;
|
563 |
int copied;
|
564 |
|
565 |
left_till_end = len - dsp.dma_pos; |
566 |
|
567 |
to_copy = MIN (temp, left_till_end); |
568 |
if (to_copy > sizeof(tmpbuf)) |
569 |
to_copy = sizeof(tmpbuf);
|
570 |
cpu_physical_memory_read(addr + dsp.dma_pos, tmpbuf, to_copy); |
571 |
copied = AUD_write (tmpbuf, to_copy); |
572 |
|
573 |
temp -= copied; |
574 |
dsp.dma_pos += copied; |
575 |
|
576 |
if (dsp.dma_pos == len) {
|
577 |
dsp.dma_pos = 0;
|
578 |
} |
579 |
|
580 |
net += copied; |
581 |
|
582 |
if (copied != to_copy)
|
583 |
return net;
|
584 |
} |
585 |
|
586 |
return net;
|
587 |
} |
588 |
|
589 |
static int SB_read_DMA (void *opaque, target_ulong addr, int size) |
590 |
{ |
591 |
SB16State *dsp = opaque; |
592 |
int free, till, copy, written;
|
593 |
|
594 |
if (0 == dsp->speaker) |
595 |
return 0; |
596 |
|
597 |
if (dsp->left_till_irq < 0) { |
598 |
dsp->left_till_irq += dsp->dma_buffer_size; |
599 |
return dsp->dma_pos;
|
600 |
} |
601 |
|
602 |
free = AUD_get_free (); |
603 |
|
604 |
if ((free <= 0) || (0 == size)) { |
605 |
return dsp->dma_pos;
|
606 |
} |
607 |
|
608 |
if (mix_block > 0) { |
609 |
copy = MIN (free, mix_block); |
610 |
} |
611 |
else {
|
612 |
copy = free; |
613 |
} |
614 |
|
615 |
till = dsp->left_till_irq; |
616 |
|
617 |
ldebug ("addr:%#010x free:%d till:%d size:%d\n",
|
618 |
addr, free, till, size); |
619 |
if (till <= copy) {
|
620 |
if (0 == dsp->dma_auto) { |
621 |
copy = till; |
622 |
} |
623 |
} |
624 |
|
625 |
written = write_audio (addr, size, copy); |
626 |
dsp->left_till_irq -= written; |
627 |
AUD_adjust_estimate (free - written); |
628 |
|
629 |
if (dsp->left_till_irq <= 0) { |
630 |
dsp->mixer_regs[0x82] |= dsp->mixer_regs[0x80]; |
631 |
if (0 == noirq) { |
632 |
ldebug ("request irq\n");
|
633 |
pic_set_irq(sb.irq, 1);
|
634 |
} |
635 |
|
636 |
if (0 == dsp->dma_auto) { |
637 |
control (0);
|
638 |
} |
639 |
} |
640 |
|
641 |
ldebug ("pos %5d free %5d size %5d till % 5d copy %5d dma size %5d\n",
|
642 |
dsp->dma_pos, free, size, dsp->left_till_irq, copy, |
643 |
dsp->dma_buffer_size); |
644 |
|
645 |
if (dsp->left_till_irq <= 0) { |
646 |
dsp->left_till_irq += dsp->dma_buffer_size; |
647 |
} |
648 |
|
649 |
return dsp->dma_pos;
|
650 |
} |
651 |
|
652 |
static int magic_of_irq (int irq) |
653 |
{ |
654 |
switch (irq) {
|
655 |
case 2: |
656 |
return 1; |
657 |
case 5: |
658 |
return 2; |
659 |
case 7: |
660 |
return 4; |
661 |
case 10: |
662 |
return 8; |
663 |
default:
|
664 |
log ("bad irq %d\n", irq);
|
665 |
return 2; |
666 |
} |
667 |
} |
668 |
|
669 |
static int irq_of_magic (int magic) |
670 |
{ |
671 |
switch (magic) {
|
672 |
case 1: |
673 |
return 2; |
674 |
case 2: |
675 |
return 5; |
676 |
case 4: |
677 |
return 7; |
678 |
case 8: |
679 |
return 10; |
680 |
default:
|
681 |
log ("bad irq magic %d\n", magic);
|
682 |
return 2; |
683 |
} |
684 |
} |
685 |
|
686 |
void SB16_init (void) |
687 |
{ |
688 |
SB16State *s = &dsp; |
689 |
int i;
|
690 |
static const uint8_t dsp_write_ports[] = {0x6, 0xc}; |
691 |
static const uint8_t dsp_read_ports[] = {0x6, 0xa, 0xc, 0xd, 0xe, 0xf}; |
692 |
|
693 |
s->mixer_regs[0x0e] = ~0; |
694 |
s->mixer_regs[0x80] = magic_of_irq (sb.irq);
|
695 |
s->mixer_regs[0x81] = 0x20 | (sb.dma << 1); |
696 |
|
697 |
DEREF (irq_of_magic); |
698 |
|
699 |
for (i = 0x30; i < 0x48; i++) { |
700 |
s->mixer_regs[i] = 0x20;
|
701 |
} |
702 |
|
703 |
for (i = 0; i < LENOFA (dsp_write_ports); i++) { |
704 |
register_ioport_write (sb.port + dsp_write_ports[i], 1, 1, dsp_write, s); |
705 |
} |
706 |
|
707 |
for (i = 0; i < LENOFA (dsp_read_ports); i++) { |
708 |
register_ioport_read (sb.port + dsp_read_ports[i], 1, 1, dsp_read, s); |
709 |
} |
710 |
|
711 |
register_ioport_write (sb.port + 0x4, 1, 1, mixer_write_indexb, s); |
712 |
register_ioport_write (sb.port + 0x4, 1, 2, mixer_write_indexw, s); |
713 |
register_ioport_read (sb.port + 0x5, 1, 1, mixer_read, s); |
714 |
register_ioport_write (sb.port + 0x5, 1, 1, mixer_write_datab, s); |
715 |
|
716 |
DMA_register_channel (sb.hdma, SB_read_DMA, s); |
717 |
DMA_register_channel (sb.dma, SB_read_DMA, s); |
718 |
} |