mirror of
https://github.com/hrydgard/ppsspp.git
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Henrik RydgårdandClaude Opus 5.5
6936d22b38
popsman.prx starts the Media Engine and sets up audio through them. The ME reset, bus clock and AVC reset are the calls the older NIDs already have. The others set bits of registers lowio.prx 6.61 writes for them (0x50 bit 15+n, 0x58 bit 16+n, 0x60 bit 18, 0x78 bits 7+n and 11), and C36775AD (called with 0, 1 before audio is set up) isn't read yet. The system register device now keeps every register it doesn't model. Under --vsh these stand in for lowio.prx's own, which write the same registers. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
177 lines
8.1 KiB
C++
177 lines
8.1 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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// The parts of the firmware's system register driver homebrew and the POPS manager use to start the
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// Media Engine. Each sets or clears a bit of a register the way the driver does (lowio.prx 6.61 at
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// 080001b8, 080004b8, 08000880 and 08000cd8, sysreg.prx 1.50 the same), returning whether it was
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// set. Under --vsh these stand in for lowio.prx's own, which write the same registers.
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#include "Common/CommonTypes.h"
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#include "Core/HLE/HLE.h"
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#include "Core/HLE/FunctionWrappers.h"
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#include "Core/HLE/sceSysreg.h"
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#include "Core/HW/MMIO.h"
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#include "Core/MIPS/MIPS.h"
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#include "Core/MIPS/MeCore.h"
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enum : u32 {
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SYSREG_RESET = 0xBC10004C,
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SYSREG_BUS_CLOCK = 0xBC100050,
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SYSREG_CLOCK_58 = 0xBC100058,
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SYSREG_60 = 0xBC100060,
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SYSREG_IO_78 = 0xBC100078,
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RESET_ME = 0x04,
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RESET_VME = 0x10,
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RESET_AVC = 0x20,
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BUS_CLOCK_ME = 0x01,
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};
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static int SetSysregBit(MIPSState *mips, u32 reg, u32 bit, bool set) {
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const u32 old = MMIO::Read(mips, reg, 4);
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MMIO::Write(mips, reg, 4, set ? (old | bit) : (old & ~bit));
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return (old & bit) ? 1 : 0;
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}
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static int sceSysregMeResetEnable(MIPSState *mips) {
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return hleLogDebug(Log::ME, SetSysregBit(mips, SYSREG_RESET, RESET_ME, true));
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}
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static int sceSysregMeResetDisable(MIPSState *mips) {
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return hleLogDebug(Log::ME, SetSysregBit(mips, SYSREG_RESET, RESET_ME, false));
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}
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static int sceSysregMeBusClockEnable(MIPSState *mips) {
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return hleLogDebug(Log::ME, SetSysregBit(mips, SYSREG_BUS_CLOCK, BUS_CLOCK_ME, true));
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}
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static int sceSysregMeBusClockDisable(MIPSState *mips) {
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return hleLogDebug(Log::ME, SetSysregBit(mips, SYSREG_BUS_CLOCK, BUS_CLOCK_ME, false));
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}
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static int sceSysregVmeResetEnable(MIPSState *mips) {
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return hleLogDebug(Log::ME, SetSysregBit(mips, SYSREG_RESET, RESET_VME, true));
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}
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static int sceSysregVmeResetDisable(MIPSState *mips) {
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return hleLogDebug(Log::ME, SetSysregBit(mips, SYSREG_RESET, RESET_VME, false));
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}
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static int sceSysregAvcResetEnable(MIPSState *mips) {
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return hleLogDebug(Log::ME, SetSysregBit(mips, SYSREG_RESET, RESET_AVC, true));
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}
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static int sceSysregAvcResetDisable(MIPSState *mips) {
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return hleLogDebug(Log::ME, SetSysregBit(mips, SYSREG_RESET, RESET_AVC, false));
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}
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// The 6.60/6.61 calls popsman.prx makes whose names aren't known, after what lowio.prx does.
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// Those taking an index only take 0 or 1.
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static int SetSysregIndexedBit(MIPSState *mips, u32 reg, u32 bit0, int index) {
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if (index < 0 || index >= 2)
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return hleLogError(Log::ME, 0x80000102, "bad index");
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return hleLogDebug(Log::ME, SetSysregBit(mips, reg, bit0 << index, true));
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}
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static int sceSysreg_driver_8B1DD83A(MIPSState *mips, int index) {
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return SetSysregIndexedBit(mips, SYSREG_BUS_CLOCK, 0x8000, index);
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}
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static int sceSysreg_driver_B1751B06(MIPSState *mips, int index) {
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return SetSysregIndexedBit(mips, SYSREG_CLOCK_58, 0x10000, index);
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}
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static int sceSysreg_driver_4634C9DC(MIPSState *mips, int index) {
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return SetSysregIndexedBit(mips, SYSREG_IO_78, 0x80, index);
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}
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static int sceSysreg_driver_4B4CCE80(MIPSState *mips) {
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return hleLogDebug(Log::ME, SetSysregBit(mips, SYSREG_IO_78, 0x800, true));
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}
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// Sets 0x60 bit 18 to value, returning what it was.
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static int sceSysreg_driver_41B0337B(MIPSState *mips, int value) {
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if (value < 0 || value >= 2)
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return hleLogError(Log::ME, 0x800001FE, "bad value");
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return hleLogDebug(Log::ME, SetSysregBit(mips, SYSREG_60, 1 << 18, value != 0));
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}
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// popsman calls it with (0, 1) before setting up audio. Not read yet.
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static int sceSysreg_driver_C36775AD(int a, int b) {
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return hleLogWarning(Log::ME, 0, "unimplemented");
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}
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const HLEFunction sceSysreg_driver[] = {
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{0xDE59DACB, &WrapI_V<sceSysregMeResetEnable>, "sceSysregMeResetEnable", 'i', "", HLE_KERNEL_SYSCALL },
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{0x2DB0EB28, &WrapI_V<sceSysregMeResetDisable>, "sceSysregMeResetDisable", 'i', "", HLE_KERNEL_SYSCALL },
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{0x44F6CDA7, &WrapI_V<sceSysregMeBusClockEnable>, "sceSysregMeBusClockEnable", 'i', "", HLE_KERNEL_SYSCALL },
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{0x158AD4FC, &WrapI_V<sceSysregMeBusClockDisable>, "sceSysregMeBusClockDisable", 'i', "", HLE_KERNEL_SYSCALL },
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{0xD20581EA, &WrapI_V<sceSysregVmeResetEnable>, "sceSysregVmeResetEnable", 'i', "", HLE_KERNEL_SYSCALL },
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{0x7558064A, &WrapI_V<sceSysregVmeResetDisable>, "sceSysregVmeResetDisable", 'i', "", HLE_KERNEL_SYSCALL },
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{0x9BB70D34, &WrapI_V<sceSysregAvcResetEnable>, "sceSysregAvcResetEnable", 'i', "", HLE_KERNEL_SYSCALL },
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{0xFD6C562B, &WrapI_V<sceSysregAvcResetDisable>, "sceSysregAvcResetDisable", 'i', "", HLE_KERNEL_SYSCALL },
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// 3.71 and later.
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{0xA9997109, &WrapI_V<sceSysregMeResetEnable>, "sceSysregMeResetEnable371", 'i', "", HLE_KERNEL_SYSCALL },
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{0x76220E94, &WrapI_V<sceSysregMeResetDisable>, "sceSysregMeResetDisable371", 'i', "", HLE_KERNEL_SYSCALL },
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{0x3199CF1C, &WrapI_V<sceSysregMeBusClockEnable>, "sceSysregMeBusClockEnable371", 'i', "", HLE_KERNEL_SYSCALL },
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// 6.60 and 6.61, which popsman.prx uses.
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{0x457FEBA9, &WrapI_V<sceSysregMeResetEnable>, "sceSysregMeResetEnable660", 'i', "", HLE_KERNEL_SYSCALL },
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{0x48F1C4AD, &WrapI_V<sceSysregMeResetDisable>, "sceSysregMeResetDisable660", 'i', "", HLE_KERNEL_SYSCALL },
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{0x38527743, &WrapI_V<sceSysregMeBusClockEnable>, "sceSysregMeBusClockEnable660", 'i', "", HLE_KERNEL_SYSCALL },
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{0x0AE8E549, &WrapI_V<sceSysregAvcResetEnable>, "sceSysregAvcResetEnable660", 'i', "", HLE_KERNEL_SYSCALL },
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{0x8B1DD83A, &WrapI_I<sceSysreg_driver_8B1DD83A>, "sceSysreg_driver_8B1DD83A", 'i', "i", HLE_KERNEL_SYSCALL },
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{0xB1751B06, &WrapI_I<sceSysreg_driver_B1751B06>, "sceSysreg_driver_B1751B06", 'i', "i", HLE_KERNEL_SYSCALL },
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{0x4634C9DC, &WrapI_I<sceSysreg_driver_4634C9DC>, "sceSysreg_driver_4634C9DC", 'i', "i", HLE_KERNEL_SYSCALL },
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{0x4B4CCE80, &WrapI_V<sceSysreg_driver_4B4CCE80>, "sceSysreg_driver_4B4CCE80", 'i', "", HLE_KERNEL_SYSCALL },
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{0x41B0337B, &WrapI_I<sceSysreg_driver_41B0337B>, "sceSysreg_driver_41B0337B", 'i', "i", HLE_KERNEL_SYSCALL },
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{0xC36775AD, &WrapI_II<sceSysreg_driver_C36775AD>, "sceSysreg_driver_C36775AD", 'i', "ii", HLE_KERNEL_SYSCALL },
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};
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// Custom-core homebrew (mcidclan's libraries) walks this to find me_wrapper's "SceMeRpc" handler,
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// and puts its own in it. MeCore::KernelInit() makes that one record.
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static u32 sceKernelReferSysEventHandler() {
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return hleLogDebug(Log::ME, MeCore::g_meState ? MeCore::g_meState->sysEventHandlers : 0);
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}
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// Takes a handler out of that list (snes9xTYL does it to the "SceMeRpc" one). Next is at 0x18.
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static int sceKernelUnregisterSysEventHandler(u32 handler) {
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if (!MeCore::g_meState)
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return hleLogWarning(Log::ME, 0, "no handlers");
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u32 *link = &MeCore::g_meState->sysEventHandlers;
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while (*link && Memory::IsValidRange(*link, 0x40)) {
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if (*link == handler) {
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*link = Memory::ReadUnchecked_U32(handler + 0x18);
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return hleLogDebug(Log::ME, 0);
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}
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link = (u32 *)Memory::GetPointerWriteUnchecked(*link + 0x18);
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}
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return hleLogWarning(Log::ME, -1, "not registered");
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}
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const HLEFunction sceSysEventForKernel[] = {
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{0x68D55505, &WrapU_V<sceKernelReferSysEventHandler>, "sceKernelReferSysEventHandler", 'x', "", HLE_KERNEL_SYSCALL },
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{0xD7D3FDCD, &WrapI_U<sceKernelUnregisterSysEventHandler>, "sceKernelUnregisterSysEventHandler", 'i', "x", HLE_KERNEL_SYSCALL },
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};
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void Register_sceSysEventForKernel() {
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RegisterHLEModule("sceSysEventForKernel", ARRAY_SIZE(sceSysEventForKernel), sceSysEventForKernel);
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}
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void Register_sceSysreg_driver() {
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RegisterHLEModule("sceSysreg_driver", ARRAY_SIZE(sceSysreg_driver), sceSysreg_driver);
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}
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