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AudioCore: Skeleton Implementation

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This commit:
* Adds a new subproject, audio_core.
* Defines structures that exist in DSP shared memory.
* Hooks up various other parts of the emulator into audio core.

This sets the foundation for a later HLE DSP implementation.
This commit is contained in:
MerryMage
2016-02-21 13:13:52 +00:00
parent 0d086616d1
commit 8b00954ec7
19 changed files with 875 additions and 71 deletions
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139
src/core/hle/service/dsp_dsp.cpp
View File

@@ -2,6 +2,8 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "audio_core/hle/pipe.h"
#include "common/logging/log.h"
#include "core/hle/kernel/event.h"
@@ -14,17 +16,30 @@ namespace DSP_DSP {
static u32 read_pipe_count;
static Kernel::SharedPtr<Kernel::Event> semaphore_event;
static Kernel::SharedPtr<Kernel::Event> interrupt_event;
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.
struct PairHash {
template <typename T, typename U>
std::size_t operator()(const std::pair<T, U> &x) const {
// TODO(yuriks): Replace with better hash combining function.
return std::hash<T>()(x.first) ^ std::hash<U>()(x.second);
}
};
if (interrupt_event != 0)
interrupt_event->Signal();
/// Map of (audio interrupt number, channel number) to Kernel::Events. See: RegisterInterruptEvents
static std::unordered_map<std::pair<u32, u32>, Kernel::SharedPtr<Kernel::Event>, PairHash> interrupt_events;
// DSP Interrupts:
// Interrupt #2 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 SignalAllInterrupts() {
// HACK: The other interrupts have currently unknown purpose, we trigger them each tick in any case.
for (auto& interrupt_event : interrupt_events)
interrupt_event.second->Signal();
}
void SignalInterrupt(u32 interrupt, u32 channel) {
interrupt_events[std::make_pair(interrupt, channel)]->Signal();
}
/**
@@ -43,7 +58,7 @@ static void ConvertProcessAddressFromDspDram(Service::Interface* self) {
cmd_buff[1] = 0; // No error
cmd_buff[2] = (addr << 1) + (Memory::DSP_RAM_VADDR + 0x40000);
LOG_WARNING(Service_DSP, "(STUBBED) called with address 0x%08X", addr);
LOG_TRACE(Service_DSP, "addr=0x%08X", addr);
}
/**
@@ -121,8 +136,8 @@ static void FlushDataCache(Service::Interface* self) {
/**
* DSP_DSP::RegisterInterruptEvents service function
* Inputs:
* 1 : Parameter 0 (purpose unknown)
* 2 : Parameter 1 (purpose unknown)
* 1 : Interrupt Number
* 2 : Channel Number
* 4 : Interrupt event handle
* Outputs:
* 1 : Result of function, 0 on success, otherwise error code
@@ -130,22 +145,24 @@ static void FlushDataCache(Service::Interface* self) {
static void RegisterInterruptEvents(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 param0 = cmd_buff[1];
u32 param1 = cmd_buff[2];
u32 interrupt = cmd_buff[1];
u32 channel = cmd_buff[2];
u32 event_handle = cmd_buff[4];
auto evt = Kernel::g_handle_table.Get<Kernel::Event>(cmd_buff[4]);
if (evt != nullptr) {
interrupt_event = evt;
cmd_buff[1] = 0; // No error
if (event_handle) {
auto evt = Kernel::g_handle_table.Get<Kernel::Event>(cmd_buff[4]);
if (evt) {
interrupt_events[std::make_pair(interrupt, channel)] = evt;
cmd_buff[1] = RESULT_SUCCESS.raw;
LOG_WARNING(Service_DSP, "Registered interrupt=%u, channel=%u, event_handle=0x%08X", interrupt, channel, event_handle);
} else {
cmd_buff[1] = -1;
LOG_ERROR(Service_DSP, "Invalid event handle! interrupt=%u, channel=%u, event_handle=0x%08X", interrupt, channel, event_handle);
}
} else {
LOG_ERROR(Service_DSP, "called with invalid handle=%08X", cmd_buff[4]);
// TODO(yuriks): An error should be returned from SendSyncRequest, not in the cmdbuf
cmd_buff[1] = -1;
interrupt_events.erase(std::make_pair(interrupt, channel));
LOG_WARNING(Service_DSP, "Unregistered interrupt=%u, channel=%u, event_handle=0x%08X", interrupt, channel, event_handle);
}
LOG_WARNING(Service_DSP, "(STUBBED) called param0=%u, param1=%u, event_handle=0x%08X", param0, param1, event_handle);
}
/**
@@ -158,8 +175,6 @@ static void RegisterInterruptEvents(Service::Interface* self) {
static void SetSemaphore(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
SignalInterrupt();
cmd_buff[1] = 0; // No error
LOG_WARNING(Service_DSP, "(STUBBED) called");
@@ -168,9 +183,9 @@ static void SetSemaphore(Service::Interface* self) {
/**
* DSP_DSP::WriteProcessPipe service function
* Inputs:
* 1 : Number
* 1 : Channel
* 2 : Size
* 3 : (size <<14) | 0x402
* 3 : (size << 14) | 0x402
* 4 : Buffer
* Outputs:
* 0 : Return header
@@ -179,21 +194,42 @@ static void SetSemaphore(Service::Interface* self) {
static void WriteProcessPipe(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 number = cmd_buff[1];
u32 channel = cmd_buff[1];
u32 size = cmd_buff[2];
u32 new_size = cmd_buff[3];
u32 buffer = cmd_buff[4];
if (IPC::StaticBufferDesc(size, 1) != cmd_buff[3]) {
LOG_ERROR(Service_DSP, "IPC static buffer descriptor failed validation (0x%X). channel=%u, size=0x%X, buffer=0x%08X", cmd_buff[3], channel, size, buffer);
cmd_buff[1] = -1; // TODO
return;
}
if (!Memory::GetPointer(buffer)) {
LOG_ERROR(Service_DSP, "Invalid Buffer: channel=%u, size=0x%X, buffer=0x%08X", channel, size, buffer);
cmd_buff[1] = -1; // TODO
return;
}
std::vector<u8> message(size);
for (size_t i = 0; i < size; i++) {
message[i] = Memory::Read8(buffer + i);
}
DSP::HLE::PipeWrite(channel, message);
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
LOG_WARNING(Service_DSP, "(STUBBED) called number=%u, size=0x%X, new_size=0x%X, buffer=0x%08X",
number, size, new_size, buffer);
LOG_TRACE(Service_DSP, "channel=%u, size=0x%X, buffer=0x%08X", channel, 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 : Unknown
* 1 : Pipe Number
* 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
@@ -204,35 +240,25 @@ static void WriteProcessPipe(Service::Interface* self) {
static void ReadPipeIfPossible(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 unk1 = cmd_buff[1];
u32 pipe = cmd_buff[1];
u32 unk2 = cmd_buff[2];
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;
}
if (!Memory::GetPointer(addr)) {
LOG_ERROR(Service_DSP, "Invalid addr: pipe=0x%08X, unk2=0x%08X, size=0x%X, buffer=0x%08X", pipe, unk2, size, addr);
cmd_buff[1] = -1; // TODO
return;
}
cmd_buff[1] = 0; // No error
cmd_buff[2] = (read_pipe_count - initial_size) * sizeof(u16);
std::vector<u8> response = DSP::HLE::PipeRead(pipe, size);
LOG_WARNING(Service_DSP, "(STUBBED) called unk1=0x%08X, unk2=0x%08X, size=0x%X, buffer=0x%08X",
unk1, unk2, size, addr);
Memory::WriteBlock(addr, response.data(), response.size());
cmd_buff[1] = 0; // No error
cmd_buff[2] = (u32)response.size();
LOG_TRACE(Service_DSP, "pipe=0x%08X, unk2=0x%08X, size=0x%X, buffer=0x%08X", pipe, unk2, size, addr);
}
/**
@@ -311,7 +337,6 @@ const Interface::FunctionInfo FunctionTable[] = {
Interface::Interface() {
semaphore_event = Kernel::Event::Create(RESETTYPE_ONESHOT, "DSP_DSP::semaphore_event");
interrupt_event = nullptr;
read_pipe_count = 0;
Register(FunctionTable);
@@ -319,7 +344,7 @@ Interface::Interface() {
Interface::~Interface() {
semaphore_event = nullptr;
interrupt_event = nullptr;
interrupt_events.clear();
}
} // namespace

12
src/core/hle/service/dsp_dsp.h
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@@ -23,7 +23,15 @@ public:
}
};
/// Signals that a DSP interrupt has occurred to userland code
void SignalInterrupt();
/// Signal all audio related interrupts.
void SignalAllInterrupts();
/**
* Signal a specific audio related interrupt based on interrupt id and channel id.
* @param interrupt_id The interrupt id
* @param channel_id The channel id
* The significance of various values of interrupt_id and channel_id is not yet known.
*/
void SignalInterrupt(u32 interrupt_id, u32 channel_id);
} // namespace