// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <cinttypes>
#include "audio_core/hle/pipe.h"
#include "common/hash.h"
#include "common/logging/log.h"
#include "core/hle/kernel/event.h"
#include "core/hle/service/dsp_dsp.h"
using DspPipe = DSP::HLE::DspPipe;
namespace Service {
namespace DSP_DSP {
static Kernel::SharedPtr<Kernel::Event> semaphore_event;
/// There are three types of interrupts
enum class InterruptType { Zero, One, Pipe };
constexpr size_t NUM_INTERRUPT_TYPE = 3;
class InterruptEvents final {
public:
void Signal(InterruptType type, DspPipe pipe) {
Kernel::SharedPtr<Kernel::Event>& event = Get(type, pipe);
if (event) {
event->Signal();
}
}
Kernel::SharedPtr<Kernel::Event>& Get(InterruptType type, DspPipe dsp_pipe) {
switch (type) {
case InterruptType::Zero:
return zero;
case InterruptType::One:
return one;
case InterruptType::Pipe: {
const size_t pipe_index = static_cast<size_t>(dsp_pipe);
ASSERT(pipe_index < DSP::HLE::NUM_DSP_PIPE);
return pipe[pipe_index];
}
}
UNREACHABLE_MSG("Invalid interrupt type = %zu", static_cast<size_t>(type));
}
bool HasTooManyEventsRegistered() const {
// Actual service implementation only has 6 'slots' for interrupts.
constexpr size_t max_number_of_interrupt_events = 6;
size_t number =
std::count_if(pipe.begin(), pipe.end(), [](const auto& evt) { return evt != nullptr; });
if (zero != nullptr)
number++;
if (one != nullptr)
number++;
return number >= max_number_of_interrupt_events;
}
private:
/// Currently unknown purpose
Kernel::SharedPtr<Kernel::Event> zero = nullptr;
/// Currently unknown purpose
Kernel::SharedPtr<Kernel::Event> one = nullptr;
/// Each DSP pipe has an associated interrupt
std::array<Kernel::SharedPtr<Kernel::Event>, DSP::HLE::NUM_DSP_PIPE> pipe = {{}};
};
static InterruptEvents interrupt_events;
// DSP Interrupts:
// The audio-pipe interrupt occurs every frame tick. Userland programs normally have a thread
// that's waiting for an interrupt event. Immediately after this interrupt event, userland
// normally updates the state in the next region and increments the relevant frame counter by
// two.
void SignalPipeInterrupt(DspPipe pipe) {
interrupt_events.Signal(InterruptType::Pipe, pipe);
}
/**
* 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)
*/
static void ConvertProcessAddressFromDspDram(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 addr = cmd_buff[1];
cmd_buff[0] = IPC::MakeHeader(0xC, 2, 0);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
// TODO(merry): There is a per-region offset missing in this calculation (that seems to be
// always zero).
cmd_buff[2] = (addr << 1) + (Memory::DSP_RAM_VADDR + 0x40000);
LOG_DEBUG(Service_DSP, "addr=0x%08X", addr);
}
/**
* DSP_DSP::LoadComponent service function
* Inputs:
* 1 : Size
* 2 : Program mask (observed only half word used)
* 3 : Data mask (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
*/
static void LoadComponent(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 size = cmd_buff[1];
u32 prog_mask = cmd_buff[2];
u32 data_mask = cmd_buff[3];
u32 desc = cmd_buff[4];
u32 buffer = cmd_buff[5];
cmd_buff[0] = IPC::MakeHeader(0x11, 2, 2);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
cmd_buff[2] = 1; // Pretend that we actually loaded the DSP firmware
cmd_buff[3] = desc;
cmd_buff[4] = buffer;
// TODO(bunnei): Implement real DSP firmware loading
ASSERT(Memory::IsValidVirtualAddress(buffer));
std::vector<u8> component_data(size);
Memory::ReadBlock(buffer, component_data.data(), component_data.size());
LOG_INFO(Service_DSP, "Firmware hash: %#" PRIx64,
Common::ComputeHash64(component_data.data(), component_data.size()));
// Some versions of the firmware have the location of DSP structures listed here.
ASSERT(size > 0x37C);
LOG_INFO(Service_DSP, "Structures hash: %#" PRIx64,
Common::ComputeHash64(component_data.data() + 0x340, 60));
LOG_WARNING(Service_DSP,
"(STUBBED) called size=0x%X, prog_mask=0x%08X, data_mask=0x%08X, buffer=0x%08X",
size, prog_mask, data_mask, buffer);
}
/**
* DSP_DSP::GetSemaphoreEventHandle service function
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 3 : Semaphore event handle
*/
static void GetSemaphoreEventHandle(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[0] = IPC::MakeHeader(0x16, 1, 2);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
// cmd_buff[2] not set
cmd_buff[3] = Kernel::g_handle_table.Create(semaphore_event).MoveFrom(); // Event handle
LOG_WARNING(Service_DSP, "(STUBBED) called");
}
/**
* DSP_DSP::FlushDataCache service function
*
* This Function is a no-op, We aren't emulating the CPU cache any time soon.
*
* Inputs:
* 1 : Address
* 2 : Size
* 3 : Value 0, some descriptor for the KProcess Handle
* 4 : KProcess handle
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
*/
static void FlushDataCache(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 address = cmd_buff[1];
u32 size = cmd_buff[2];
u32 process = cmd_buff[4];
cmd_buff[0] = IPC::MakeHeader(0x13, 1, 0);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
LOG_TRACE(Service_DSP, "called address=0x%08X, size=0x%X, process=0x%08X", address, size,
process);
}
/**
* DSP_DSP::RegisterInterruptEvents service function
* Inputs:
* 1 : Interrupt Type
* 2 : Pipe Number
* 4 : Interrupt event handle
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
*/
static void RegisterInterruptEvents(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 type_index = cmd_buff[1];
u32 pipe_index = cmd_buff[2];
u32 event_handle = cmd_buff[4];
ASSERT_MSG(type_index < NUM_INTERRUPT_TYPE && pipe_index < DSP::HLE::NUM_DSP_PIPE,
"Invalid type or pipe: type = %u, pipe = %u", type_index, pipe_index);
InterruptType type = static_cast<InterruptType>(cmd_buff[1]);
DspPipe pipe = static_cast<DspPipe>(cmd_buff[2]);
cmd_buff[0] = IPC::MakeHeader(0x15, 1, 0);
if (event_handle) {
auto evt = Kernel::g_handle_table.Get<Kernel::Event>(cmd_buff[4]);
if (!evt) {
LOG_INFO(Service_DSP, "Invalid event handle! type=%u, pipe=%u, event_handle=0x%08X",
type_index, pipe_index, event_handle);
ASSERT(false); // TODO: This should really be handled at an IPC translation layer.
}
if (interrupt_events.HasTooManyEventsRegistered()) {
LOG_INFO(Service_DSP, "Ran out of space to register interrupts (Attempted to register "
"type=%u, pipe=%u, event_handle=0x%08X)",
type_index, pipe_index, event_handle);
cmd_buff[1] = ResultCode(ErrorDescription::InvalidResultValue, ErrorModule::DSP,
ErrorSummary::OutOfResource, ErrorLevel::Status)
.raw;
return;
}
interrupt_events.Get(type, pipe) = evt;
LOG_INFO(Service_DSP, "Registered type=%u, pipe=%u, event_handle=0x%08X", type_index,
pipe_index, event_handle);
cmd_buff[1] = RESULT_SUCCESS.raw;
} else {
interrupt_events.Get(type, pipe) = nullptr;
LOG_INFO(Service_DSP, "Unregistered interrupt=%u, channel=%u, event_handle=0x%08X",
type_index, pipe_index, event_handle);
cmd_buff[1] = RESULT_SUCCESS.raw;
}
}
/**
* DSP_DSP::SetSemaphore service function
* Inputs:
* 1 : Unknown (observed only half word used)
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
*/
static void SetSemaphore(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[0] = IPC::MakeHeader(0x7, 1, 0);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
LOG_WARNING(Service_DSP, "(STUBBED) called");
}
/**
* DSP_DSP::WriteProcessPipe service function
* Inputs:
* 1 : Pipe Number
* 2 : Size
* 3 : (size << 14) | 0x402
* 4 : Buffer
* Outputs:
* 0 : Return header
* 1 : Result of function, 0 on success, otherwise error code
*/
static void WriteProcessPipe(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 pipe_index = cmd_buff[1];
u32 size = cmd_buff[2];
u32 buffer = cmd_buff[4];
DSP::HLE::DspPipe pipe = static_cast<DSP::HLE::DspPipe>(pipe_index);
if (IPC::StaticBufferDesc(size, 1) != cmd_buff[3]) {
LOG_ERROR(Service_DSP, "IPC static buffer descriptor failed validation (0x%X). pipe=%u, "
"size=0x%X, buffer=0x%08X",
cmd_buff[3], pipe_index, size, buffer);
cmd_buff[0] = IPC::MakeHeader(0, 1, 0);
cmd_buff[1] = ResultCode(ErrorDescription::OS_InvalidBufferDescriptor, ErrorModule::OS,
ErrorSummary::WrongArgument, ErrorLevel::Permanent)
.raw;
return;
}
ASSERT_MSG(Memory::IsValidVirtualAddress(buffer),
"Invalid Buffer: pipe=%u, size=0x%X, buffer=0x%08X", pipe, size, buffer);
std::vector<u8> message(size);
for (u32 i = 0; i < size; i++) {
message[i] = Memory::Read8(buffer + i);
}
// This behaviour was confirmed by RE.
// The likely reason for this is that games tend to pass in garbage at these bytes
// because they read random bytes off the stack.
switch (pipe) {
case DSP::HLE::DspPipe::Audio:
ASSERT(message.size() >= 4);
message[2] = 0;
message[3] = 0;
break;
case DSP::HLE::DspPipe::Binary:
ASSERT(message.size() >= 8);
message[4] = 1;
message[5] = 0;
message[6] = 0;
message[7] = 0;
break;
}
DSP::HLE::PipeWrite(pipe, message);
cmd_buff[0] = IPC::MakeHeader(0xD, 1, 0);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
LOG_DEBUG(Service_DSP, "pipe=%u, size=0x%X, buffer=0x%08X", pipe_index, size, buffer);
}
/**
* DSP_DSP::ReadPipeIfPossible service function
* A pipe is a means of communication between the ARM11 and DSP that occurs on
* hardware by writing to/reading from the DSP registers at 0x10203000.
* Pipes are used for initialisation. See also DSP::HLE::PipeRead.
* Inputs:
* 1 : Pipe Number
* 2 : Unknown
* 3 : Size in bytes of read (observed only lower half word used)
* 0x41 : Virtual address of memory buffer to write pipe contents to
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Number of bytes read from pipe
*/
static void ReadPipeIfPossible(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 pipe_index = cmd_buff[1];
u32 unknown = cmd_buff[2];
u32 size = cmd_buff[3] & 0xFFFF; // Lower 16 bits are size
VAddr addr = cmd_buff[0x41];
DSP::HLE::DspPipe pipe = static_cast<DSP::HLE::DspPipe>(pipe_index);
ASSERT_MSG(Memory::IsValidVirtualAddress(addr),
"Invalid addr: pipe=0x%08X, unknown=0x%08X, size=0x%X, buffer=0x%08X", pipe, unknown,
size, addr);
cmd_buff[0] = IPC::MakeHeader(0x10, 1, 2);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
if (DSP::HLE::GetPipeReadableSize(pipe) >= size) {
std::vector<u8> response = DSP::HLE::PipeRead(pipe, size);
Memory::WriteBlock(addr, response.data(), response.size());
cmd_buff[2] = static_cast<u32>(response.size());
} else {
cmd_buff[2] = 0; // Return no data
}
cmd_buff[3] = IPC::StaticBufferDesc(size, 0);
cmd_buff[4] = addr;
LOG_DEBUG(Service_DSP,
"pipe=%u, unknown=0x%08X, size=0x%X, buffer=0x%08X, return cmd_buff[2]=0x%08X",
pipe_index, unknown, size, addr, cmd_buff[2]);
}
/**
* DSP_DSP::ReadPipe service function
* Inputs:
* 1 : Pipe Number
* 2 : Unknown
* 3 : Size in bytes of read (observed only lower half word used)
* 0x41 : Virtual address of memory buffer to write pipe contents to
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Number of bytes read from pipe
*/
static void ReadPipe(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 pipe_index = cmd_buff[1];
u32 unknown = cmd_buff[2];
u32 size = cmd_buff[3] & 0xFFFF; // Lower 16 bits are size
VAddr addr = cmd_buff[0x41];
DSP::HLE::DspPipe pipe = static_cast<DSP::HLE::DspPipe>(pipe_index);
ASSERT_MSG(Memory::IsValidVirtualAddress(addr),
"Invalid addr: pipe=0x%08X, unknown=0x%08X, size=0x%X, buffer=0x%08X", pipe, unknown,
size, addr);
if (DSP::HLE::GetPipeReadableSize(pipe) >= size) {
std::vector<u8> response = DSP::HLE::PipeRead(pipe, size);
Memory::WriteBlock(addr, response.data(), response.size());
cmd_buff[0] = IPC::MakeHeader(0xE, 2, 2);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
cmd_buff[2] = static_cast<u32>(response.size());
cmd_buff[3] = IPC::StaticBufferDesc(size, 0);
cmd_buff[4] = addr;
} else {
// No more data is in pipe. Hardware hangs in this case; this should never happen.
UNREACHABLE();
}
LOG_DEBUG(Service_DSP,
"pipe=%u, unknown=0x%08X, size=0x%X, buffer=0x%08X, return cmd_buff[2]=0x%08X",
pipe_index, unknown, size, addr, cmd_buff[2]);
}
/**
* DSP_DSP::GetPipeReadableSize service function
* Inputs:
* 1 : Pipe Number
* 2 : Unknown
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Number of bytes readable from pipe
*/
static void GetPipeReadableSize(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 pipe_index = cmd_buff[1];
u32 unknown = cmd_buff[2];
DSP::HLE::DspPipe pipe = static_cast<DSP::HLE::DspPipe>(pipe_index);
cmd_buff[0] = IPC::MakeHeader(0xF, 2, 0);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
cmd_buff[2] = static_cast<u32>(DSP::HLE::GetPipeReadableSize(pipe));
LOG_DEBUG(Service_DSP, "pipe=%u, unknown=0x%08X, return cmd_buff[2]=0x%08X", pipe_index,
unknown, cmd_buff[2]);
}
/**
* DSP_DSP::SetSemaphoreMask service function
* Inputs:
* 1 : Mask
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
*/
static void SetSemaphoreMask(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 mask = cmd_buff[1];
cmd_buff[0] = IPC::MakeHeader(0x17, 1, 0);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
LOG_WARNING(Service_DSP, "(STUBBED) called mask=0x%08X", mask);
}
/**
* DSP_DSP::GetHeadphoneStatus service function
* Inputs:
* 1 : None
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : The headphone status response, 0 = Not using headphones?,
* 1 = using headphones?
*/
static void GetHeadphoneStatus(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[0] = IPC::MakeHeader(0x1F, 2, 0);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
cmd_buff[2] = 0; // Not using headphones
LOG_DEBUG(Service_DSP, "called");
}
/**
* DSP_DSP::RecvData service function
* This function reads a value out of a DSP register.
* Inputs:
* 1 : Register Number
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : Value in the register
* Notes:
* This function has only been observed being called with a register number of 0.
*/
static void RecvData(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 register_number = cmd_buff[1];
ASSERT_MSG(register_number == 0, "Unknown register_number %u", register_number);
// Application reads this after requesting DSP shutdown, to verify the DSP has indeed shutdown
// or slept.
cmd_buff[0] = IPC::MakeHeader(0x1, 2, 0);
cmd_buff[1] = RESULT_SUCCESS.raw;
switch (DSP::HLE::GetDspState()) {
case DSP::HLE::DspState::On:
cmd_buff[2] = 0;
break;
case DSP::HLE::DspState::Off:
case DSP::HLE::DspState::Sleeping:
cmd_buff[2] = 1;
break;
default:
UNREACHABLE();
break;
}
LOG_DEBUG(Service_DSP, "register_number=%u", register_number);
}
/**
* DSP_DSP::RecvDataIsReady service function
* This function checks whether a DSP register is ready to be read.
* Inputs:
* 1 : Register Number
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
* 2 : non-zero == ready
* Note:
* This function has only been observed being called with a register number of 0.
*/
static void RecvDataIsReady(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 register_number = cmd_buff[1];
ASSERT_MSG(register_number == 0, "Unknown register_number %u", register_number);
cmd_buff[0] = IPC::MakeHeader(0x2, 2, 0);
cmd_buff[1] = RESULT_SUCCESS.raw;
cmd_buff[2] = 1; // Ready to read
LOG_DEBUG(Service_DSP, "register_number=%u", register_number);
}
const Interface::FunctionInfo FunctionTable[] = {
{0x00010040, RecvData, "RecvData"},
{0x00020040, RecvDataIsReady, "RecvDataIsReady"},
{0x00030080, nullptr, "SendData"},
{0x00040040, nullptr, "SendDataIsEmpty"},
{0x000500C2, nullptr, "SendFifoEx"},
{0x000600C0, nullptr, "RecvFifoEx"},
{0x00070040, SetSemaphore, "SetSemaphore"},
{0x00080000, nullptr, "GetSemaphore"},
{0x00090040, nullptr, "ClearSemaphore"},
{0x000A0040, nullptr, "MaskSemaphore"},
{0x000B0000, nullptr, "CheckSemaphoreRequest"},
{0x000C0040, ConvertProcessAddressFromDspDram, "ConvertProcessAddressFromDspDram"},
{0x000D0082, WriteProcessPipe, "WriteProcessPipe"},
{0x000E00C0, ReadPipe, "ReadPipe"},
{0x000F0080, GetPipeReadableSize, "GetPipeReadableSize"},
{0x001000C0, ReadPipeIfPossible, "ReadPipeIfPossible"},
{0x001100C2, LoadComponent, "LoadComponent"},
{0x00120000, nullptr, "UnloadComponent"},
{0x00130082, FlushDataCache, "FlushDataCache"},
{0x00140082, nullptr, "InvalidateDCache"},
{0x00150082, RegisterInterruptEvents, "RegisterInterruptEvents"},
{0x00160000, GetSemaphoreEventHandle, "GetSemaphoreEventHandle"},
{0x00170040, SetSemaphoreMask, "SetSemaphoreMask"},
{0x00180040, nullptr, "GetPhysicalAddress"},
{0x00190040, nullptr, "GetVirtualAddress"},
{0x001A0042, nullptr, "SetIirFilterI2S1_cmd1"},
{0x001B0042, nullptr, "SetIirFilterI2S1_cmd2"},
{0x001C0082, nullptr, "SetIirFilterEQ"},
{0x001D00C0, nullptr, "ReadMultiEx_SPI2"},
{0x001E00C2, nullptr, "WriteMultiEx_SPI2"},
{0x001F0000, GetHeadphoneStatus, "GetHeadphoneStatus"},
{0x00200040, nullptr, "ForceHeadphoneOut"},
{0x00210000, nullptr, "GetIsDspOccupied"},
};
////////////////////////////////////////////////////////////////////////////////////////////////////
// Interface class
Interface::Interface() {
semaphore_event = Kernel::Event::Create(Kernel::ResetType::OneShot, "DSP_DSP::semaphore_event");
interrupt_events = {};
Register(FunctionTable);
}
Interface::~Interface() {
semaphore_event = nullptr;
interrupt_events = {};
}
} // namespace DSP_DSP
} // namespace Service
