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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/log.h"
#include "core/hle/hle.h"
#include "core/hle/kernel/event.h"
#include "core/hle/service/dsp_dsp.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// Namespace DSP_DSP
namespace DSP_DSP {
static u32 read_pipe_count = 0;
static Handle semaphore_event = 0;
static Handle interrupt_event = 0;
void SignalInterrupt() {
// TODO(bunnei): This is just a stub, it does not do anything other than signal to the emulated
// application that a DSP interrupt occurred, without specifying which one. Since we do not
// emulate the DSP yet (and how it works is largely unknown), this is a work around to get games
// that check the DSP interrupt signal event to run. We should figure out the different types of
// DSP interrupts, and trigger them at the appropriate times.
if (interrupt_event == 0) {
LOG_WARNING(Service_DSP, "cannot signal interrupt until DSP event has been created!");
return;
}
Kernel::SignalEvent(interrupt_event);
}
/**
* DSP_DSP::ConvertProcessAddressFromDspDram service function
* Inputs:
* 1 : Address
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : (inaddr << 1) + 0x1FF40000 (where 0x1FF00000 is the DSP RAM address)
*/
void ConvertProcessAddressFromDspDram(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 addr = cmd_buff[1];
cmd_buff[1] = 0; // No error
cmd_buff[2] = (addr << 1) + (Memory::DSP_MEMORY_VADDR + 0x40000);
LOG_WARNING(Service_DSP, "(STUBBED) called with address %u", addr);
}
/**
* DSP_DSP::LoadComponent service function
* Inputs:
* 1 : Size
* 2 : Unknown (observed only half word used)
* 3 : Unknown (observed only half word used)
* 4 : (size << 4) | 0xA
* 5 : Buffer address
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Component loaded, 0 on not loaded, 1 on loaded
*/
void LoadComponent(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[1] = 0; // No error
cmd_buff[2] = 1; // Pretend that we actually loaded the DSP firmware
// TODO(bunnei): Implement real DSP firmware loading
LOG_WARNING(Service_DSP, "(STUBBED) called");
}
/**
* DSP_DSP::GetSemaphoreEventHandle service function
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 3 : Semaphore event handle
*/
void GetSemaphoreEventHandle(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[1] = 0; // No error
cmd_buff[3] = semaphore_event; // Event handle
LOG_WARNING(Service_DSP, "(STUBBED) called");
}
/**
* DSP_DSP::RegisterInterruptEvents service function
* Inputs:
* 1 : Parameter 0 (purpose unknown)
* 2 : Parameter 1 (purpose unknown)
* 4 : Interrupt event handle
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
*/
void RegisterInterruptEvents(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
interrupt_event = static_cast<Handle>(cmd_buff[4]);
cmd_buff[1] = 0; // No error
LOG_WARNING(Service_DSP, "(STUBBED) called");
}
/**
* DSP_DSP::WriteReg0x10 service function
* Inputs:
* 1 : Unknown (observed only half word used)
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
*/
void WriteReg0x10(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
SignalInterrupt();
cmd_buff[1] = 0; // No error
LOG_WARNING(Service_DSP, "(STUBBED) called");
}
/**
* DSP_DSP::ReadPipeIfPossible service function
* Inputs:
* 1 : Unknown
* 2 : Unknown
* 3 : Size in bytes of read (observed only lower half word used)
* 0x41 : Virtual address to read from DSP pipe to in memory
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Number of bytes read from pipe
*/
void ReadPipeIfPossible(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 size = cmd_buff[3] & 0xFFFF;// Lower 16 bits are size
VAddr addr = cmd_buff[0x41];
// Canned DSP responses that games expect. These were taken from HW by 3dmoo team.
// TODO: Remove this hack :)
static const std::array<u16, 16> canned_read_pipe = {
0x000F, 0xBFFF, 0x9E8E, 0x8680, 0xA78E, 0x9430, 0x8400, 0x8540,
0x948E, 0x8710, 0x8410, 0xA90E, 0xAA0E, 0xAACE, 0xAC4E, 0xAC58
};
u32 initial_size = read_pipe_count;
for (unsigned offset = 0; offset < size; offset += sizeof(u16)) {
if (read_pipe_count < canned_read_pipe.size()) {
Memory::Write16(addr + offset, canned_read_pipe[read_pipe_count]);
read_pipe_count++;
} else {
LOG_ERROR(Service_DSP, "canned read pipe log exceeded!");
break;
}
}
cmd_buff[1] = 0; // No error
cmd_buff[2] = (read_pipe_count - initial_size) * sizeof(u16);
LOG_WARNING(Service_DSP, "(STUBBED) called size=0x%08X, buffer=0x%08X", size, addr);
}
const Interface::FunctionInfo FunctionTable[] = {
{0x00010040, nullptr, "RecvData"},
{0x00020040, nullptr, "RecvDataIsReady"},
{0x00030080, nullptr, "SendData"},
{0x00040040, nullptr, "SendDataIsEmpty"},
{0x00070040, WriteReg0x10, "WriteReg0x10"},
{0x00080000, nullptr, "GetSemaphore"},
{0x00090040, nullptr, "ClearSemaphore"},
{0x000B0000, nullptr, "CheckSemaphoreRequest"},
{0x000C0040, ConvertProcessAddressFromDspDram, "ConvertProcessAddressFromDspDram"},
{0x000D0082, nullptr, "WriteProcessPipe"},
{0x001000C0, ReadPipeIfPossible, "ReadPipeIfPossible"},
{0x001100C2, LoadComponent, "LoadComponent"},
{0x00120000, nullptr, "UnloadComponent"},
{0x00130082, nullptr, "FlushDataCache"},
{0x00140082, nullptr, "InvalidateDCache"},
{0x00150082, RegisterInterruptEvents, "RegisterInterruptEvents"},
{0x00160000, GetSemaphoreEventHandle, "GetSemaphoreEventHandle"},
{0x00170040, nullptr, "SetSemaphoreMask"},
{0x00180040, nullptr, "GetPhysicalAddress"},
{0x00190040, nullptr, "GetVirtualAddress"},
{0x001A0042, nullptr, "SetIirFilterI2S1_cmd1"},
{0x001B0042, nullptr, "SetIirFilterI2S1_cmd2"},
{0x001C0082, nullptr, "SetIirFilterEQ"},
{0x001F0000, nullptr, "GetHeadphoneStatus"},
{0x00210000, nullptr, "GetIsDspOccupied"},
};
////////////////////////////////////////////////////////////////////////////////////////////////////
// Interface class
Interface::Interface() {
semaphore_event = Kernel::CreateEvent(RESETTYPE_ONESHOT, "DSP_DSP::semaphore_event");
interrupt_event = 0;
read_pipe_count = 0;
Register(FunctionTable, ARRAY_SIZE(FunctionTable));
}
} // namespace
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