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dolphin/Source/Core/DSPCore/Src/DSPHWInterface.cpp

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/*====================================================================
filename: gdsp_interface.h
project: GCemu
created: 2004-6-18
mail: duddie@walla.com
Copyright (c) 2005 Duddie & Tratax
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
====================================================================*/
#include <stdlib.h>
#include "Thread.h"
#include "MemoryUtil.h"
#include "DSPCore.h"
#include "DSPHost.h"
#include "DSPTables.h"
#include "DSPAnalyzer.h"
#include "DSPAccelerator.h"
#include "DSPInterpreter.h"
#include "DSPHWInterface.h"
void gdsp_do_dma();
Common::CriticalSection g_CriticalSection;
static volatile u16 gdsp_mbox[2][2];
u16 gdsp_ifx_regs[256];
void gdsp_ifx_init()
{
for (int i = 0; i < 256; i++)
{
gdsp_ifx_regs[i] = 0;
}
gdsp_mbox[0][0] = 0;
gdsp_mbox[0][1] = 0;
gdsp_mbox[1][0] = 0;
gdsp_mbox[1][1] = 0;
}
u32 gdsp_mbox_peek(u8 mbx)
{
if (DSPHost_OnThread())
g_CriticalSection.Enter();
u32 value = ((gdsp_mbox[mbx][0] << 16) | gdsp_mbox[mbx][1]);
if (DSPHost_OnThread())
g_CriticalSection.Leave();
return value;
}
void gdsp_mbox_write_h(u8 mbx, u16 val)
{
if (DSPHost_OnThread())
g_CriticalSection.Enter();
gdsp_mbox[mbx][0] = val & 0x7fff;
if (DSPHost_OnThread())
g_CriticalSection.Leave();
}
void gdsp_mbox_write_l(u8 mbx, u16 val)
{
if (DSPHost_OnThread())
g_CriticalSection.Enter();
gdsp_mbox[mbx][1] = val;
gdsp_mbox[mbx][0] |= 0x8000;
if (DSPHost_OnThread())
g_CriticalSection.Leave();
if (mbx == GDSP_MBOX_DSP)
{
DEBUG_LOG(DSPLLE, " - DSP writes mail to mbx %i: 0x%08x (pc=0x%04x)", mbx, gdsp_mbox_peek(GDSP_MBOX_DSP), g_dsp.pc);
} else {
// Trigger exception?
}
}
u16 gdsp_mbox_read_h(u8 mbx)
{
return gdsp_mbox[mbx][0]; // TODO: mask away the top bit?
}
u16 gdsp_mbox_read_l(u8 mbx)
{
if (DSPHost_OnThread())
g_CriticalSection.Enter();
u16 val = gdsp_mbox[mbx][1];
gdsp_mbox[mbx][0] &= ~0x8000;
DEBUG_LOG(DSPLLE, "- DSP reads mail from mbx %i: %08x (pc=0x%04x)", mbx, gdsp_mbox_peek(mbx), g_dsp.pc);
if (DSPHost_OnThread())
g_CriticalSection.Leave();
return val;
}
void gdsp_ifx_write(u16 addr, u16 val)
{
switch (addr & 0xff)
{
case 0xfb: // DIRQ
if (val & 0x1)
DSPHost_InterruptRequest();
break;
case 0xfc: // DMBH
gdsp_mbox_write_h(GDSP_MBOX_DSP, val);
break;
case 0xfd: // DMBL
gdsp_mbox_write_l(GDSP_MBOX_DSP, val);
break;
case 0xcb: // DSBL
gdsp_ifx_regs[addr & 0xFF] = val;
gdsp_do_dma();
gdsp_ifx_regs[DSP_DSCR] &= ~0x0004;
break;
case 0xd3: // ZeldaUnk (accelerator WRITE)
ERROR_LOG(DSPLLE, "Write To ZeldaUnk pc=%04x (%04x)\n", g_dsp.pc, val);
dsp_write_aram_d3(val);
break;
case 0xde:
//if (val)
// PanicAlert("Gain written: %04x", val); // BMX XXX does, and sounds HORRIBLE.
case 0xcd:
case 0xce:
case 0xcf:
case 0xc9:
gdsp_ifx_regs[addr & 0xFF] = val;
break;
default:
if ((addr & 0xff) >= 0xa0) {
if (pdlabels[(addr & 0xFF) - 0xa0].name) {
INFO_LOG(DSPLLE, "%04x MW %s (%04x)\n", g_dsp.pc, pdlabels[(addr & 0xFF) - 0xa0].name, val);
}
else {
ERROR_LOG(DSPLLE, "%04x MW %04x (%04x)\n", g_dsp.pc, addr, val);
}
}
else {
ERROR_LOG(DSPLLE, "%04x MW %04x (%04x)\n", g_dsp.pc, addr, val);
}
gdsp_ifx_regs[addr & 0xFF] = val;
break;
}
}
u16 gdsp_ifx_read(u16 addr)
{
switch (addr & 0xff)
{
case 0xfc: // DMBH
return gdsp_mbox_read_h(GDSP_MBOX_DSP);
case 0xfe: // CMBH
return gdsp_mbox_read_h(GDSP_MBOX_CPU);
case 0xff: // CMBL
return gdsp_mbox_read_l(GDSP_MBOX_CPU);
case 0xc9:
return gdsp_ifx_regs[addr & 0xFF];
case 0xdd: // ADPCM Accelerator reads
return dsp_read_accelerator();
case 0xd3:
ERROR_LOG(DSPLLE, "DSP read aram D3");
return dsp_read_aram_d3();
default:
if ((addr & 0xff) >= 0xa0) {
if (pdlabels[(addr & 0xFF) - 0xa0].name) {
INFO_LOG(DSPLLE, "%04x MR %s (%04x)\n", g_dsp.pc, pdlabels[(addr & 0xFF) - 0xa0].name, gdsp_ifx_regs[addr & 0xFF]);
}
else {
ERROR_LOG(DSPLLE, "%04x MR %04x (%04x)\n", g_dsp.pc, addr, gdsp_ifx_regs[addr & 0xFF]);
}
}
else {
ERROR_LOG(DSPLLE, "%04x MR %04x (%04x)\n", g_dsp.pc, addr, gdsp_ifx_regs[addr & 0xFF]);
}
return gdsp_ifx_regs[addr & 0xFF];
}
}
void gdsp_idma_in(u16 dsp_addr, u32 addr, u32 size)
{
UnWriteProtectMemory(g_dsp.iram, DSP_IRAM_BYTE_SIZE, false);
u8* dst = ((u8*)g_dsp.iram);
for (u32 i = 0; i < size; i += 2)
{
// TODO : this may be different on Wii.
*(u16*)&dst[dsp_addr + i] = Common::swap16(*(const u16*)&g_dsp.cpu_ram[(addr + i) & 0x0fffffff]);
}
WriteProtectMemory(g_dsp.iram, DSP_IRAM_BYTE_SIZE, false);
INFO_LOG(DSPLLE, "*** Copy new UCode from 0x%08x to 0x%04x (crc: %8x)\n", addr, dsp_addr, g_dsp.iram_crc);
g_dsp.iram_crc = DSPHost_CodeLoaded(g_dsp.cpu_ram + (addr & 0x0fffffff), size);
DSPAnalyzer::Analyze();
}
void gdsp_idma_out(u16 dsp_addr, u32 addr, u32 size)
{
ERROR_LOG(DSPLLE, "*** idma_out IRAM_DSP (0x%04x) -> RAM (0x%08x) : size (0x%08x)\n", dsp_addr / 2, addr, size);
}
// TODO: These should eat clock cycles.
void gdsp_ddma_in(u16 dsp_addr, u32 addr, u32 size)
{
if ((addr & 0x7FFFFFFF) > 0x01FFFFFF)
{
ERROR_LOG(DSPLLE, "*** ddma_in read from invalid addr (0x%08x)\n", addr);
return;
}
u8* dst = ((u8*)g_dsp.dram);
for (u32 i = 0; i < size; i += 2)
{
*(u16*)&dst[dsp_addr + i] = Common::swap16(*(const u16*)&g_dsp.cpu_ram[(addr + i) & 0x7FFFFFFF]);
}
INFO_LOG(DSPLLE, "*** ddma_in RAM (0x%08x) -> DRAM_DSP (0x%04x) : size (0x%08x)\n", addr, dsp_addr / 2, size);
}
void gdsp_ddma_out(u16 dsp_addr, u32 addr, u32 size)
{
if ((addr & 0x7FFFFFFF) > 0x01FFFFFF)
{
ERROR_LOG(DSPLLE, "*** gdsp_ddma_out to invalid addr (0x%08x)\n", addr);
return;
}
const u8* src = ((const u8*)g_dsp.dram);
for (u32 i = 0; i < size; i += 2)
{
*(u16*)&g_dsp.cpu_ram[(addr + i) & 0x7FFFFFFF] = Common::swap16(*(const u16*)&src[dsp_addr + i]);
}
INFO_LOG(DSPLLE, "*** ddma_out DRAM_DSP (0x%04x) -> RAM (0x%08x) : size (0x%08x)\n", dsp_addr / 2, addr, size);
}
void gdsp_do_dma()
{
u16 ctl;
u32 addr;
u16 dsp_addr;
u16 len;
addr = (gdsp_ifx_regs[DSP_DSMAH] << 16) | gdsp_ifx_regs[DSP_DSMAL];
ctl = gdsp_ifx_regs[DSP_DSCR];
dsp_addr = gdsp_ifx_regs[DSP_DSPA] * 2;
len = gdsp_ifx_regs[DSP_DSBL];
if ((ctl > 3) || (len > 0x4000))
{
ERROR_LOG(DSPLLE, "DMA ERROR pc: %04x ctl: %04x addr: %08x da: %04x size: %04x\n", g_dsp.pc, ctl, addr, dsp_addr, len);
exit(0);
}
switch (ctl & 0x3)
{
case (DSP_CR_DMEM | DSP_CR_TO_CPU):
gdsp_ddma_out(dsp_addr, addr, len);
break;
case (DSP_CR_DMEM | DSP_CR_FROM_CPU):
gdsp_ddma_in(dsp_addr, addr, len);
break;
case (DSP_CR_IMEM | DSP_CR_TO_CPU):
gdsp_idma_out(dsp_addr, addr, len);
break;
case (DSP_CR_IMEM | DSP_CR_FROM_CPU):
gdsp_idma_in(dsp_addr, addr, len);
break;
}
}
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