| /* |
| * QEMU Soundblaster 16 emulation |
| * |
| * 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 |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| #include "hw.h" |
| #include "audiodev.h" |
| #include "audio/audio.h" |
| #include "isa.h" |
| #include "qdev.h" |
| #include "qemu-timer.h" |
| #include "host-utils.h" |
| |
| #define dolog(...) AUD_log ("sb16", __VA_ARGS__) |
| |
| /* #define DEBUG */ |
| /* #define DEBUG_SB16_MOST */ |
| |
| #ifdef DEBUG |
| #define ldebug(...) dolog (__VA_ARGS__) |
| #else |
| #define ldebug(...) |
| #endif |
| |
| #define IO_READ_PROTO(name) \ |
| uint32_t name (void *opaque, uint32_t nport) |
| #define IO_WRITE_PROTO(name) \ |
| void name (void *opaque, uint32_t nport, uint32_t val) |
| |
| static const char e3[] = "COPYRIGHT (C) CREATIVE TECHNOLOGY LTD, 1992."; |
| |
| typedef struct SB16State { |
| ISADevice dev; |
| QEMUSoundCard card; |
| qemu_irq pic; |
| uint32_t irq; |
| uint32_t dma; |
| uint32_t hdma; |
| uint32_t port; |
| uint32_t ver; |
| |
| int in_index; |
| int out_data_len; |
| int fmt_stereo; |
| int fmt_signed; |
| int fmt_bits; |
| audfmt_e fmt; |
| int dma_auto; |
| int block_size; |
| int fifo; |
| int freq; |
| int time_const; |
| int speaker; |
| int needed_bytes; |
| int cmd; |
| int use_hdma; |
| int highspeed; |
| int can_write; |
| |
| int v2x6; |
| |
| uint8_t csp_param; |
| uint8_t csp_value; |
| uint8_t csp_mode; |
| uint8_t csp_regs[256]; |
| uint8_t csp_index; |
| uint8_t csp_reg83[4]; |
| int csp_reg83r; |
| int csp_reg83w; |
| |
| uint8_t in2_data[10]; |
| uint8_t out_data[50]; |
| uint8_t test_reg; |
| uint8_t last_read_byte; |
| int nzero; |
| |
| int left_till_irq; |
| |
| int dma_running; |
| int bytes_per_second; |
| int align; |
| int audio_free; |
| SWVoiceOut *voice; |
| |
| QEMUTimer *aux_ts; |
| /* mixer state */ |
| int mixer_nreg; |
| uint8_t mixer_regs[256]; |
| } SB16State; |
| |
| static void SB_audio_callback (void *opaque, int free); |
| |
| static int magic_of_irq (int irq) |
| { |
| switch (irq) { |
| case 5: |
| return 2; |
| case 7: |
| return 4; |
| case 9: |
| return 1; |
| case 10: |
| return 8; |
| default: |
| dolog ("bad irq %d\n", irq); |
| return 2; |
| } |
| } |
| |
| static int irq_of_magic (int magic) |
| { |
| switch (magic) { |
| case 1: |
| return 9; |
| case 2: |
| return 5; |
| case 4: |
| return 7; |
| case 8: |
| return 10; |
| default: |
| dolog ("bad irq magic %d\n", magic); |
| return -1; |
| } |
| } |
| |
| #if 0 |
| static void log_dsp (SB16State *dsp) |
| { |
| ldebug ("%s:%s:%d:%s:dmasize=%d:freq=%d:const=%d:speaker=%d\n", |
| dsp->fmt_stereo ? "Stereo" : "Mono", |
| dsp->fmt_signed ? "Signed" : "Unsigned", |
| dsp->fmt_bits, |
| dsp->dma_auto ? "Auto" : "Single", |
| dsp->block_size, |
| dsp->freq, |
| dsp->time_const, |
| dsp->speaker); |
| } |
| #endif |
| |
| static void speaker (SB16State *s, int on) |
| { |
| s->speaker = on; |
| /* AUD_enable (s->voice, on); */ |
| } |
| |
| static void control (SB16State *s, int hold) |
| { |
| int dma = s->use_hdma ? s->hdma : s->dma; |
| s->dma_running = hold; |
| |
| ldebug ("hold %d high %d dma %d\n", hold, s->use_hdma, dma); |
| |
| if (hold) { |
| DMA_hold_DREQ (dma); |
| AUD_set_active_out (s->voice, 1); |
| } |
| else { |
| DMA_release_DREQ (dma); |
| AUD_set_active_out (s->voice, 0); |
| } |
| } |
| |
| static void aux_timer (void *opaque) |
| { |
| SB16State *s = opaque; |
| s->can_write = 1; |
| qemu_irq_raise (s->pic); |
| } |
| |
| #define DMA8_AUTO 1 |
| #define DMA8_HIGH 2 |
| |
| static void continue_dma8 (SB16State *s) |
| { |
| if (s->freq > 0) { |
| struct audsettings as; |
| |
| s->audio_free = 0; |
| |
| as.freq = s->freq; |
| as.nchannels = 1 << s->fmt_stereo; |
| as.fmt = s->fmt; |
| as.endianness = 0; |
| |
| s->voice = AUD_open_out ( |
| &s->card, |
| s->voice, |
| "sb16", |
| s, |
| SB_audio_callback, |
| &as |
| ); |
| } |
| |
| control (s, 1); |
| } |
| |
| static void dma_cmd8 (SB16State *s, int mask, int dma_len) |
| { |
| s->fmt = AUD_FMT_U8; |
| s->use_hdma = 0; |
| s->fmt_bits = 8; |
| s->fmt_signed = 0; |
| s->fmt_stereo = (s->mixer_regs[0x0e] & 2) != 0; |
| if (-1 == s->time_const) { |
| if (s->freq <= 0) |
| s->freq = 11025; |
| } |
| else { |
| int tmp = (256 - s->time_const); |
| s->freq = (1000000 + (tmp / 2)) / tmp; |
| } |
| |
| 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 |
| |
| Act1 sets block size via command 0x48 and it's an odd number |
| SR does the same with even number |
| Both use stereo, and Creatives own documentation states that |
| 0x48 sets block size in bytes less one.. go figure */ |
| s->block_size &= ~s->fmt_stereo; |
| } |
| |
| s->freq >>= s->fmt_stereo; |
| s->left_till_irq = s->block_size; |
| s->bytes_per_second = (s->freq << s->fmt_stereo); |
| /* s->highspeed = (mask & DMA8_HIGH) != 0; */ |
| s->dma_auto = (mask & DMA8_AUTO) != 0; |
| s->align = (1 << s->fmt_stereo) - 1; |
| |
| 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); |
| |
| continue_dma8 (s); |
| speaker (s, 1); |
| } |
| |
| static void dma_cmd (SB16State *s, uint8_t cmd, uint8_t d0, int dma_len) |
| { |
| s->use_hdma = cmd < 0xc0; |
| s->fifo = (cmd >> 1) & 1; |
| s->dma_auto = (cmd >> 2) & 1; |
| s->fmt_signed = (d0 >> 4) & 1; |
| s->fmt_stereo = (d0 >> 5) & 1; |
| |
| switch (cmd >> 4) { |
| case 11: |
| s->fmt_bits = 16; |
| break; |
| |
| case 12: |
| s->fmt_bits = 8; |
| break; |
| } |
| |
| if (-1 != s->time_const) { |
| #if 1 |
| int tmp = 256 - s->time_const; |
| s->freq = (1000000 + (tmp / 2)) / tmp; |
| #else |
| /* s->freq = 1000000 / ((255 - s->time_const) << s->fmt_stereo); */ |
| s->freq = 1000000 / ((255 - s->time_const)); |
| #endif |
| s->time_const = -1; |
| } |
| |
| s->block_size = dma_len + 1; |
| s->block_size <<= (s->fmt_bits == 16); |
| if (!s->dma_auto) { |
| /* It is clear that for DOOM and auto-init this value |
| shouldn't take stereo into account, while Miles Sound Systems |
| setsound.exe with single transfer mode wouldn't work without it |
| wonders of SB16 yet again */ |
| s->block_size <<= s->fmt_stereo; |
| } |
| |
| 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 (16 == s->fmt_bits) { |
| if (s->fmt_signed) { |
| s->fmt = AUD_FMT_S16; |
| } |
| else { |
| s->fmt = AUD_FMT_U16; |
| } |
| } |
| else { |
| if (s->fmt_signed) { |
| s->fmt = AUD_FMT_S8; |
| } |
| else { |
| s->fmt = AUD_FMT_U8; |
| } |
| } |
| |
| s->left_till_irq = s->block_size; |
| |
| 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: misaligned block size %d, alignment %d\n", |
| s->block_size, s->align + 1); |
| } |
| |
| if (s->freq) { |
| struct audsettings as; |
| |
| s->audio_free = 0; |
| |
| as.freq = s->freq; |
| as.nchannels = 1 << s->fmt_stereo; |
| as.fmt = s->fmt; |
| as.endianness = 0; |
| |
| s->voice = AUD_open_out ( |
| &s->card, |
| s->voice, |
| "sb16", |
| s, |
| SB_audio_callback, |
| &as |
| ); |
| } |
| |
| control (s, 1); |
| speaker (s, 1); |
| } |
| |
| static inline void dsp_out_data (SB16State *s, uint8_t val) |
| { |
| ldebug ("outdata %#x\n", val); |
| if ((size_t) 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) { |
| return s->in2_data[--s->in_index]; |
| } |
| else { |
| dolog ("buffer underflow\n"); |
| return 0; |
| } |
| } |
| |
| static void command (SB16State *s, uint8_t cmd) |
| { |
| ldebug ("command %#x\n", cmd); |
| |
| if (cmd > 0xaf && cmd < 0xd0) { |
| if (cmd & 8) { |
| dolog ("ADC not yet supported (command %#x)\n", cmd); |
| } |
| |
| switch (cmd >> 4) { |
| case 11: |
| case 12: |
| break; |
| default: |
| dolog ("%#x wrong bits\n", cmd); |
| } |
| s->needed_bytes = 3; |
| } |
| else { |
| s->needed_bytes = 0; |
| |
| switch (cmd) { |
| case 0x03: |
| dsp_out_data (s, 0x10); /* s->csp_param); */ |
| goto warn; |
| |
| case 0x04: |
| s->needed_bytes = 1; |
| goto warn; |
| |
| case 0x05: |
| s->needed_bytes = 2; |
| goto warn; |
| |
| case 0x08: |
| /* __asm__ ("int3"); */ |
| goto warn; |
| |
| case 0x0e: |
| s->needed_bytes = 2; |
| goto warn; |
| |
| case 0x09: |
| dsp_out_data (s, 0xf8); |
| goto warn; |
| |
| case 0x0f: |
| s->needed_bytes = 1; |
| goto warn; |
| |
| case 0x10: |
| s->needed_bytes = 1; |
| goto warn; |
| |
| case 0x14: |
| s->needed_bytes = 2; |
| s->block_size = 0; |
| break; |
| |
| case 0x1c: /* Auto-Initialize DMA DAC, 8-bit */ |
| dma_cmd8 (s, DMA8_AUTO, -1); |
| break; |
| |
| case 0x20: /* Direct ADC, Juice/PL */ |
| dsp_out_data (s, 0xff); |
| goto warn; |
| |
| case 0x35: |
| dolog ("0x35 - MIDI command not implemented\n"); |
| break; |
| |
| case 0x40: |
| s->freq = -1; |
| s->time_const = -1; |
| s->needed_bytes = 1; |
| break; |
| |
| case 0x41: |
| s->freq = -1; |
| s->time_const = -1; |
| s->needed_bytes = 2; |
| break; |
| |
| case 0x42: |
| s->freq = -1; |
| s->time_const = -1; |
| s->needed_bytes = 2; |
| goto warn; |
| |
| case 0x45: |
| dsp_out_data (s, 0xaa); |
| goto warn; |
| |
| case 0x47: /* Continue Auto-Initialize DMA 16bit */ |
| break; |
| |
| case 0x48: |
| 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; |
| |
| case 0x90: |
| case 0x91: |
| dma_cmd8 (s, ((cmd & 1) == 0) | DMA8_HIGH, -1); |
| break; |
| |
| case 0xd0: /* halt DMA operation. 8bit */ |
| control (s, 0); |
| break; |
| |
| case 0xd1: /* speaker on */ |
| speaker (s, 1); |
| break; |
| |
| case 0xd3: /* speaker off */ |
| speaker (s, 0); |
| break; |
| |
| case 0xd4: /* continue DMA operation. 8bit */ |
| /* KQ6 (or maybe Sierras audblst.drv in general) resets |
| the frequency between halt/continue */ |
| continue_dma8 (s); |
| break; |
| |
| case 0xd5: /* halt DMA operation. 16bit */ |
| control (s, 0); |
| break; |
| |
| case 0xd6: /* continue DMA operation. 16bit */ |
| control (s, 1); |
| break; |
| |
| case 0xd9: /* exit auto-init DMA after this block. 16bit */ |
| s->dma_auto = 0; |
| break; |
| |
| case 0xda: /* exit auto-init DMA after this block. 8bit */ |
| s->dma_auto = 0; |
| break; |
| |
| case 0xe0: /* DSP identification */ |
| s->needed_bytes = 1; |
| break; |
| |
| case 0xe1: |
| dsp_out_data (s, s->ver & 0xff); |
| dsp_out_data (s, s->ver >> 8); |
| break; |
| |
| case 0xe2: |
| s->needed_bytes = 1; |
| goto warn; |
| |
| case 0xe3: |
| { |
| int i; |
| for (i = sizeof (e3) - 1; i >= 0; --i) |
| dsp_out_data (s, e3[i]); |
| } |
| break; |
| |
| case 0xe4: /* write test reg */ |
| s->needed_bytes = 1; |
| break; |
| |
| case 0xe7: |
| dolog ("Attempt to probe for ESS (0xe7)?\n"); |
| break; |
| |
| case 0xe8: /* read test reg */ |
| dsp_out_data (s, s->test_reg); |
| break; |
| |
| case 0xf2: |
| case 0xf3: |
| dsp_out_data (s, 0xaa); |
| s->mixer_regs[0x82] |= (cmd == 0xf2) ? 1 : 2; |
| qemu_irq_raise (s->pic); |
| break; |
| |
| case 0xf9: |
| s->needed_bytes = 1; |
| goto warn; |
| |
| case 0xfa: |
| dsp_out_data (s, 0); |
| goto warn; |
| |
| case 0xfc: /* FIXME */ |
| dsp_out_data (s, 0); |
| goto warn; |
| |
| default: |
| dolog ("Unrecognized command %#x\n", cmd); |
| break; |
| } |
| } |
| |
| 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); |
| goto exit; |
| |
| } |
| |
| static uint16_t dsp_get_lohi (SB16State *s) |
| { |
| uint8_t hi = dsp_get_data (s); |
| uint8_t lo = dsp_get_data (s); |
| return (hi << 8) | lo; |
| } |
| |
| static uint16_t dsp_get_hilo (SB16State *s) |
| { |
| uint8_t lo = dsp_get_data (s); |
| uint8_t hi = dsp_get_data (s); |
| return (hi << 8) | lo; |
| } |
| |
| static void complete (SB16State *s) |
| { |
| int d0, d1, d2; |
| ldebug ("complete command %#x, in_index %d, needed_bytes %d\n", |
| s->cmd, s->in_index, s->needed_bytes); |
| |
| if (s->cmd > 0xaf && s->cmd < 0xd0) { |
| d2 = dsp_get_data (s); |
| d1 = dsp_get_data (s); |
| d0 = dsp_get_data (s); |
| |
| if (s->cmd & 8) { |
| dolog ("ADC params cmd = %#x d0 = %d, d1 = %d, d2 = %d\n", |
| s->cmd, d0, d1, d2); |
| } |
| else { |
| ldebug ("cmd = %#x d0 = %d, d1 = %d, d2 = %d\n", |
| s->cmd, d0, d1, d2); |
| dma_cmd (s, s->cmd, d0, d1 + (d2 << 8)); |
| } |
| } |
| else { |
| switch (s->cmd) { |
| case 0x04: |
| s->csp_mode = dsp_get_data (s); |
| s->csp_reg83r = 0; |
| s->csp_reg83w = 0; |
| ldebug ("CSP command 0x04: mode=%#x\n", s->csp_mode); |
| break; |
| |
| case 0x05: |
| s->csp_param = dsp_get_data (s); |
| s->csp_value = dsp_get_data (s); |
| ldebug ("CSP command 0x05: param=%#x value=%#x\n", |
| s->csp_param, |
| s->csp_value); |
| break; |
| |
| case 0x0e: |
| d0 = dsp_get_data (s); |
| d1 = dsp_get_data (s); |
| ldebug ("write CSP register %d <- %#x\n", d1, d0); |
| if (d1 == 0x83) { |
| ldebug ("0x83[%d] <- %#x\n", s->csp_reg83r, d0); |
| s->csp_reg83[s->csp_reg83r % 4] = d0; |
| s->csp_reg83r += 1; |
| } |
| else { |
| s->csp_regs[d1] = d0; |
| } |
| break; |
| |
| case 0x0f: |
| d0 = dsp_get_data (s); |
| ldebug ("read CSP register %#x -> %#x, mode=%#x\n", |
| d0, s->csp_regs[d0], s->csp_mode); |
| if (d0 == 0x83) { |
| ldebug ("0x83[%d] -> %#x\n", |
| s->csp_reg83w, |
| s->csp_reg83[s->csp_reg83w % 4]); |
| dsp_out_data (s, s->csp_reg83[s->csp_reg83w % 4]); |
| s->csp_reg83w += 1; |
| } |
| else { |
| dsp_out_data (s, s->csp_regs[d0]); |
| } |
| break; |
| |
| case 0x10: |
| d0 = dsp_get_data (s); |
| dolog ("cmd 0x10 d0=%#x\n", d0); |
| break; |
| |
| case 0x14: |
| dma_cmd8 (s, 0, dsp_get_lohi (s) + 1); |
| break; |
| |
| case 0x40: |
| s->time_const = dsp_get_data (s); |
| ldebug ("set time const %d\n", s->time_const); |
| 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); |
| break; |
| |
| case 0x48: |
| s->block_size = dsp_get_lohi (s) + 1; |
| 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; |
| int64_t ticks; |
| |
| freq = s->freq > 0 ? s->freq : 11025; |
| samples = dsp_get_lohi (s) + 1; |
| bytes = samples << s->fmt_stereo << (s->fmt_bits == 16); |
| ticks = muldiv64 (bytes, get_ticks_per_sec (), freq); |
| if (ticks < get_ticks_per_sec () / 1024) { |
| qemu_irq_raise (s->pic); |
| } |
| else { |
| if (s->aux_ts) { |
| qemu_mod_timer ( |
| s->aux_ts, |
| qemu_get_clock_ns (vm_clock) + ticks |
| ); |
| } |
| } |
| ldebug ("mix silence %d %d %" PRId64 "\n", samples, bytes, ticks); |
| } |
| break; |
| |
| case 0xe0: |
| d0 = dsp_get_data (s); |
| s->out_data_len = 0; |
| ldebug ("E0 data = %#x\n", d0); |
| dsp_out_data (s, ~d0); |
| break; |
| |
| case 0xe2: |
| #ifdef DEBUG |
| d0 = dsp_get_data (s); |
| dolog ("E2 = %#x\n", d0); |
| #endif |
| break; |
| |
| case 0xe4: |
| s->test_reg = dsp_get_data (s); |
| break; |
| |
| case 0xf9: |
| d0 = dsp_get_data (s); |
| ldebug ("command 0xf9 with %#x\n", d0); |
| switch (d0) { |
| case 0x0e: |
| dsp_out_data (s, 0xff); |
| break; |
| |
| case 0x0f: |
| dsp_out_data (s, 0x07); |
| break; |
| |
| case 0x37: |
| dsp_out_data (s, 0x38); |
| break; |
| |
| default: |
| dsp_out_data (s, 0x00); |
| break; |
| } |
| break; |
| |
| default: |
| dolog ("complete: unrecognized command %#x\n", s->cmd); |
| return; |
| } |
| } |
| |
| ldebug ("\n"); |
| s->cmd = -1; |
| return; |
| } |
| |
| static void legacy_reset (SB16State *s) |
| { |
| struct audsettings as; |
| |
| s->freq = 11025; |
| s->fmt_signed = 0; |
| s->fmt_bits = 8; |
| s->fmt_stereo = 0; |
| |
| as.freq = s->freq; |
| as.nchannels = 1; |
| as.fmt = AUD_FMT_U8; |
| as.endianness = 0; |
| |
| s->voice = AUD_open_out ( |
| &s->card, |
| s->voice, |
| "sb16", |
| s, |
| SB_audio_callback, |
| &as |
| ); |
| |
| /* Not sure about that... */ |
| /* AUD_set_active_out (s->voice, 1); */ |
| } |
| |
| static void reset (SB16State *s) |
| { |
| qemu_irq_lower (s->pic); |
| if (s->dma_auto) { |
| qemu_irq_raise (s->pic); |
| qemu_irq_lower (s->pic); |
| } |
| |
| s->mixer_regs[0x82] = 0; |
| s->dma_auto = 0; |
| s->in_index = 0; |
| s->out_data_len = 0; |
| s->left_till_irq = 0; |
| s->needed_bytes = 0; |
| s->block_size = -1; |
| s->nzero = 0; |
| s->highspeed = 0; |
| s->v2x6 = 0; |
| s->cmd = -1; |
| |
| dsp_out_data (s, 0xaa); |
| speaker (s, 0); |
| control (s, 0); |
| legacy_reset (s); |
| } |
| |
| static IO_WRITE_PROTO (dsp_write) |
| { |
| SB16State *s = opaque; |
| int iport; |
| |
| iport = nport - s->port; |
| |
| ldebug ("write %#x <- %#x\n", nport, val); |
| switch (iport) { |
| case 0x06: |
| switch (val) { |
| case 0x00: |
| if (s->v2x6 == 1) { |
| reset (s); |
| } |
| s->v2x6 = 0; |
| break; |
| |
| case 0x01: |
| case 0x03: /* FreeBSD kludge */ |
| s->v2x6 = 1; |
| break; |
| |
| case 0xc6: |
| s->v2x6 = 0; /* Prince of Persia, csp.sys, diagnose.exe */ |
| break; |
| |
| case 0xb8: /* Panic */ |
| reset (s); |
| break; |
| |
| case 0x39: |
| dsp_out_data (s, 0x38); |
| reset (s); |
| s->v2x6 = 0x39; |
| break; |
| |
| default: |
| s->v2x6 = val; |
| break; |
| } |
| break; |
| |
| case 0x0c: /* write data or command | write status */ |
| /* if (s->highspeed) */ |
| /* break; */ |
| |
| if (0 == s->needed_bytes) { |
| command (s, val); |
| #if 0 |
| if (0 == s->needed_bytes) { |
| log_dsp (s); |
| } |
| #endif |
| } |
| else { |
| if (s->in_index == sizeof (s->in2_data)) { |
| dolog ("in data overrun\n"); |
| } |
| else { |
| s->in2_data[s->in_index++] = val; |
| if (s->in_index == s->needed_bytes) { |
| s->needed_bytes = 0; |
| complete (s); |
| #if 0 |
| log_dsp (s); |
| #endif |
| } |
| } |
| } |
| break; |
| |
| default: |
| ldebug ("(nport=%#x, val=%#x)\n", nport, val); |
| break; |
| } |
| } |
| |
| static IO_READ_PROTO (dsp_read) |
| { |
| SB16State *s = opaque; |
| int iport, retval, ack = 0; |
| |
| iport = nport - s->port; |
| |
| switch (iport) { |
| case 0x06: /* reset */ |
| retval = 0xff; |
| break; |
| |
| case 0x0a: /* read data */ |
| if (s->out_data_len) { |
| retval = s->out_data[--s->out_data_len]; |
| s->last_read_byte = retval; |
| } |
| else { |
| if (s->cmd != -1) { |
| dolog ("empty output buffer for command %#x\n", |
| s->cmd); |
| } |
| retval = s->last_read_byte; |
| /* goto error; */ |
| } |
| break; |
| |
| case 0x0c: /* 0 can write */ |
| retval = s->can_write ? 0 : 0x80; |
| break; |
| |
| case 0x0d: /* timer interrupt clear */ |
| /* dolog ("timer interrupt clear\n"); */ |
| retval = 0; |
| break; |
| |
| case 0x0e: /* data available status | irq 8 ack */ |
| retval = (!s->out_data_len || s->highspeed) ? 0 : 0x80; |
| if (s->mixer_regs[0x82] & 1) { |
| ack = 1; |
| s->mixer_regs[0x82] &= 1; |
| qemu_irq_lower (s->pic); |
| } |
| break; |
| |
| case 0x0f: /* irq 16 ack */ |
| retval = 0xff; |
| if (s->mixer_regs[0x82] & 2) { |
| ack = 1; |
| s->mixer_regs[0x82] &= 2; |
| qemu_irq_lower (s->pic); |
| } |
| break; |
| |
| default: |
| goto error; |
| } |
| |
| if (!ack) { |
| ldebug ("read %#x -> %#x\n", nport, retval); |
| } |
| |
| return retval; |
| |
| error: |
| dolog ("warning: dsp_read %#x error\n", nport); |
| return 0xff; |
| } |
| |
| static void reset_mixer (SB16State *s) |
| { |
| int i; |
| |
| memset (s->mixer_regs, 0xff, 0x7f); |
| memset (s->mixer_regs + 0x83, 0xff, sizeof (s->mixer_regs) - 0x83); |
| |
| s->mixer_regs[0x02] = 4; /* master volume 3bits */ |
| s->mixer_regs[0x06] = 4; /* MIDI volume 3bits */ |
| s->mixer_regs[0x08] = 0; /* CD volume 3bits */ |
| s->mixer_regs[0x0a] = 0; /* voice volume 2bits */ |
| |
| /* d5=input filt, d3=lowpass filt, d1,d2=input source */ |
| s->mixer_regs[0x0c] = 0; |
| |
| /* d5=output filt, d1=stereo switch */ |
| s->mixer_regs[0x0e] = 0; |
| |
| /* voice volume L d5,d7, R d1,d3 */ |
| s->mixer_regs[0x04] = (4 << 5) | (4 << 1); |
| /* master ... */ |
| s->mixer_regs[0x22] = (4 << 5) | (4 << 1); |
| /* MIDI ... */ |
| s->mixer_regs[0x26] = (4 << 5) | (4 << 1); |
| |
| for (i = 0x30; i < 0x48; i++) { |
| s->mixer_regs[i] = 0x20; |
| } |
| } |
| |
| static IO_WRITE_PROTO (mixer_write_indexb) |
| { |
| SB16State *s = opaque; |
| (void) nport; |
| s->mixer_nreg = val; |
| } |
| |
| static IO_WRITE_PROTO (mixer_write_datab) |
| { |
| SB16State *s = opaque; |
| |
| (void) nport; |
| ldebug ("mixer_write [%#x] <- %#x\n", s->mixer_nreg, val); |
| |
| switch (s->mixer_nreg) { |
| case 0x00: |
| reset_mixer (s); |
| break; |
| |
| case 0x80: |
| { |
| int irq = irq_of_magic (val); |
| ldebug ("setting irq to %d (val=%#x)\n", irq, val); |
| if (irq > 0) { |
| s->irq = irq; |
| } |
| } |
| break; |
| |
| case 0x81: |
| { |
| int dma, hdma; |
| |
| dma = ctz32 (val & 0xf); |
| hdma = ctz32 (val & 0xf0); |
| 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; |
| #endif |
| } |
| break; |
| |
| case 0x82: |
| dolog ("attempt to write into IRQ status register (val=%#x)\n", |
| val); |
| return; |
| |
| default: |
| if (s->mixer_nreg >= 0x80) { |
| ldebug ("attempt to write mixer[%#x] <- %#x\n", s->mixer_nreg, val); |
| } |
| break; |
| } |
| |
| s->mixer_regs[s->mixer_nreg] = val; |
| } |
| |
| static IO_WRITE_PROTO (mixer_write_indexw) |
| { |
| mixer_write_indexb (opaque, nport, val & 0xff); |
| mixer_write_datab (opaque, nport, (val >> 8) & 0xff); |
| } |
| |
| static IO_READ_PROTO (mixer_read) |
| { |
| SB16State *s = opaque; |
| |
| (void) nport; |
| #ifndef DEBUG_SB16_MOST |
| 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]; |
| } |
| |
| static int write_audio (SB16State *s, int nchan, int dma_pos, |
| int dma_len, int len) |
| { |
| int temp, net; |
| uint8_t tmpbuf[4096]; |
| |
| temp = len; |
| net = 0; |
| |
| while (temp) { |
| int left = dma_len - dma_pos; |
| int copied; |
| size_t to_copy; |
| |
| to_copy = audio_MIN (temp, left); |
| 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); |
| |
| temp -= copied; |
| dma_pos = (dma_pos + copied) % dma_len; |
| net += copied; |
| |
| if (!copied) { |
| break; |
| } |
| } |
| |
| return net; |
| } |
| |
| static int SB_read_DMA (void *opaque, int nchan, int dma_pos, int dma_len) |
| { |
| SB16State *s = opaque; |
| int till, copy, written, free; |
| |
| if (s->block_size <= 0) { |
| dolog ("invalid block size=%d nchan=%d dma_pos=%d dma_len=%d\n", |
| s->block_size, nchan, dma_pos, dma_len); |
| return dma_pos; |
| } |
| |
| if (s->left_till_irq < 0) { |
| s->left_till_irq = s->block_size; |
| } |
| |
| 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 %d till:%d len:%d\n", |
| dma_pos, free, till, dma_len); |
| #endif |
| |
| if (till <= copy) { |
| if (0 == s->dma_auto) { |
| copy = till; |
| } |
| } |
| |
| written = write_audio (s, nchan, dma_pos, dma_len, copy); |
| dma_pos = (dma_pos + written) % dma_len; |
| s->left_till_irq -= written; |
| |
| if (s->left_till_irq <= 0) { |
| s->mixer_regs[0x82] |= (nchan & 4) ? 2 : 1; |
| qemu_irq_raise (s->pic); |
| if (0 == s->dma_auto) { |
| control (s, 0); |
| speaker (s, 0); |
| } |
| } |
| |
| #ifdef DEBUG_SB16_MOST |
| ldebug ("pos %5d free %5d size %5d till % 5d copy %5d written %5d size %5d\n", |
| dma_pos, free, dma_len, s->left_till_irq, copy, written, |
| s->block_size); |
| #endif |
| |
| while (s->left_till_irq <= 0) { |
| s->left_till_irq = s->block_size + s->left_till_irq; |
| } |
| |
| return dma_pos; |
| } |
| |
| static void SB_audio_callback (void *opaque, int free) |
| { |
| SB16State *s = opaque; |
| s->audio_free = free; |
| } |
| |
| static int sb16_post_load (void *opaque, int version_id) |
| { |
| SB16State *s = opaque; |
| |
| if (s->voice) { |
| AUD_close_out (&s->card, s->voice); |
| s->voice = NULL; |
| } |
| |
| if (s->dma_running) { |
| if (s->freq) { |
| struct audsettings as; |
| |
| s->audio_free = 0; |
| |
| as.freq = s->freq; |
| as.nchannels = 1 << s->fmt_stereo; |
| as.fmt = s->fmt; |
| as.endianness = 0; |
| |
| s->voice = AUD_open_out ( |
| &s->card, |
| s->voice, |
| "sb16", |
| s, |
| SB_audio_callback, |
| &as |
| ); |
| } |
| |
| control (s, 1); |
| speaker (s, s->speaker); |
| } |
| return 0; |
| } |
| |
| static const VMStateDescription vmstate_sb16 = { |
| .name = "sb16", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .minimum_version_id_old = 1, |
| .post_load = sb16_post_load, |
| .fields = (VMStateField []) { |
| VMSTATE_UINT32(irq, SB16State), |
| VMSTATE_UINT32(dma, SB16State), |
| VMSTATE_UINT32(hdma, SB16State), |
| VMSTATE_UINT32(port, SB16State), |
| VMSTATE_UINT32(ver, SB16State), |
| VMSTATE_INT32(in_index, SB16State), |
| VMSTATE_INT32(out_data_len, SB16State), |
| VMSTATE_INT32(fmt_stereo, SB16State), |
| VMSTATE_INT32(fmt_signed, SB16State), |
| VMSTATE_INT32(fmt_bits, SB16State), |
| VMSTATE_UINT32(fmt, SB16State), |
| VMSTATE_INT32(dma_auto, SB16State), |
| VMSTATE_INT32(block_size, SB16State), |
| VMSTATE_INT32(fifo, SB16State), |
| VMSTATE_INT32(freq, SB16State), |
| VMSTATE_INT32(time_const, SB16State), |
| VMSTATE_INT32(speaker, SB16State), |
| VMSTATE_INT32(needed_bytes, SB16State), |
| VMSTATE_INT32(cmd, SB16State), |
| VMSTATE_INT32(use_hdma, SB16State), |
| VMSTATE_INT32(highspeed, SB16State), |
| VMSTATE_INT32(can_write, SB16State), |
| VMSTATE_INT32(v2x6, SB16State), |
| |
| VMSTATE_UINT8(csp_param, SB16State), |
| VMSTATE_UINT8(csp_value, SB16State), |
| VMSTATE_UINT8(csp_mode, SB16State), |
| VMSTATE_UINT8(csp_param, SB16State), |
| VMSTATE_BUFFER(csp_regs, SB16State), |
| VMSTATE_UINT8(csp_index, SB16State), |
| VMSTATE_BUFFER(csp_reg83, SB16State), |
| VMSTATE_INT32(csp_reg83r, SB16State), |
| VMSTATE_INT32(csp_reg83w, SB16State), |
| |
| VMSTATE_BUFFER(in2_data, SB16State), |
| VMSTATE_BUFFER(out_data, SB16State), |
| VMSTATE_UINT8(test_reg, SB16State), |
| VMSTATE_UINT8(last_read_byte, SB16State), |
| |
| VMSTATE_INT32(nzero, SB16State), |
| VMSTATE_INT32(left_till_irq, SB16State), |
| VMSTATE_INT32(dma_running, SB16State), |
| VMSTATE_INT32(bytes_per_second, SB16State), |
| VMSTATE_INT32(align, SB16State), |
| |
| VMSTATE_INT32(mixer_nreg, SB16State), |
| VMSTATE_BUFFER(mixer_regs, SB16State), |
| |
| VMSTATE_END_OF_LIST() |
| } |
| }; |
| |
| static const MemoryRegionPortio sb16_ioport_list[] = { |
| { 4, 1, 1, .write = mixer_write_indexb }, |
| { 4, 1, 2, .write = mixer_write_indexw }, |
| { 5, 1, 1, .read = mixer_read, .write = mixer_write_datab }, |
| { 6, 1, 1, .read = dsp_read, .write = dsp_write }, |
| { 10, 1, 1, .read = dsp_read }, |
| { 12, 1, 1, .write = dsp_write }, |
| { 12, 4, 1, .read = dsp_read }, |
| PORTIO_END_OF_LIST(), |
| }; |
| |
| |
| static int sb16_initfn (ISADevice *dev) |
| { |
| SB16State *s; |
| |
| s = DO_UPCAST (SB16State, dev, dev); |
| |
| s->cmd = -1; |
| isa_init_irq (dev, &s->pic, s->irq); |
| |
| s->mixer_regs[0x80] = magic_of_irq (s->irq); |
| s->mixer_regs[0x81] = (1 << s->dma) | (1 << s->hdma); |
| s->mixer_regs[0x82] = 2 << 5; |
| |
| s->csp_regs[5] = 1; |
| s->csp_regs[9] = 0xf8; |
| |
| reset_mixer (s); |
| s->aux_ts = qemu_new_timer_ns (vm_clock, aux_timer, s); |
| if (!s->aux_ts) { |
| dolog ("warning: Could not create auxiliary timer\n"); |
| } |
| |
| isa_register_portio_list (dev, s->port, sb16_ioport_list, s, "sb16"); |
| |
| DMA_register_channel (s->hdma, SB_read_DMA, s); |
| DMA_register_channel (s->dma, SB_read_DMA, s); |
| s->can_write = 1; |
| |
| AUD_register_card ("sb16", &s->card); |
| return 0; |
| } |
| |
| int SB16_init (qemu_irq *pic) |
| { |
| isa_create_simple ("sb16"); |
| return 0; |
| } |
| |
| static ISADeviceInfo sb16_info = { |
| .qdev.name = "sb16", |
| .qdev.desc = "Creative Sound Blaster 16", |
| .qdev.size = sizeof (SB16State), |
| .qdev.vmsd = &vmstate_sb16, |
| .init = sb16_initfn, |
| .qdev.props = (Property[]) { |
| DEFINE_PROP_HEX32 ("version", SB16State, ver, 0x0405), /* 4.5 */ |
| DEFINE_PROP_HEX32 ("iobase", SB16State, port, 0x220), |
| DEFINE_PROP_UINT32 ("irq", SB16State, irq, 5), |
| DEFINE_PROP_UINT32 ("dma", SB16State, dma, 1), |
| DEFINE_PROP_UINT32 ("dma16", SB16State, hdma, 5), |
| DEFINE_PROP_END_OF_LIST (), |
| }, |
| }; |
| |
| static void sb16_register (void) |
| { |
| isa_qdev_register (&sb16_info); |
| } |
| device_init (sb16_register) |
