// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/bit_field.h"
#include "core/mem_map.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/shared_memory.h"
#include "gsp_gpu.h"
#include "core/hw/gpu.h"
#include "video_core/gpu_debugger.h"
// Main graphics debugger object - TODO: Here is probably not the best place for this
GraphicsDebugger g_debugger;
////////////////////////////////////////////////////////////////////////////////////////////////////
// Namespace GSP_GPU
namespace GSP_GPU {
/// Event triggered when GSP interrupt has been signalled
Kernel::SharedPtr<Kernel::Event> g_interrupt_event;
/// GSP shared memoryings
Kernel::SharedPtr<Kernel::SharedMemory> g_shared_memory;
/// Thread index into interrupt relay queue, 1 is arbitrary
u32 g_thread_id = 1;
/// Gets a pointer to a thread command buffer in GSP shared memory
static inline u8* GetCommandBuffer(u32 thread_id) {
ResultVal<u8*> ptr = g_shared_memory->GetPointer(0x800 + (thread_id * sizeof(CommandBuffer)));
return ptr.ValueOr(nullptr);
}
static inline FrameBufferUpdate* GetFrameBufferInfo(u32 thread_id, u32 screen_index) {
DEBUG_ASSERT_MSG(screen_index < 2, "Invalid screen index");
// For each thread there are two FrameBufferUpdate fields
u32 offset = 0x200 + (2 * thread_id + screen_index) * sizeof(FrameBufferUpdate);
ResultVal<u8*> ptr = g_shared_memory->GetPointer(offset);
return reinterpret_cast<FrameBufferUpdate*>(ptr.ValueOr(nullptr));
}
/// Gets a pointer to the interrupt relay queue for a given thread index
static inline InterruptRelayQueue* GetInterruptRelayQueue(u32 thread_id) {
ResultVal<u8*> ptr = g_shared_memory->GetPointer(sizeof(InterruptRelayQueue) * thread_id);
return reinterpret_cast<InterruptRelayQueue*>(ptr.ValueOr(nullptr));
}
/**
* Checks if the parameters in a register write call are valid and logs in the case that
* they are not
* @param base_address The first address in the sequence of registers that will be written
* @param size_in_bytes The number of registers that will be written
* @return true if the parameters are valid, false otherwise
*/
static bool CheckWriteParameters(u32 base_address, u32 size_in_bytes) {
// TODO: Return proper error codes
if (base_address + size_in_bytes >= 0x420000) {
LOG_ERROR(Service_GSP, "Write address out of range! (address=0x%08x, size=0x%08x)",
base_address, size_in_bytes);
return false;
}
// size should be word-aligned
if ((size_in_bytes % 4) != 0) {
LOG_ERROR(Service_GSP, "Invalid size 0x%08x", size_in_bytes);
return false;
}
return true;
}
/**
* Writes sequential GSP GPU hardware registers using an array of source data
*
* @param base_address The address of the first register in the sequence
* @param size_in_bytes The number of registers to update (size of data)
* @param data A pointer to the source data
*/
static void WriteHWRegs(u32 base_address, u32 size_in_bytes, const u32* data) {
// TODO: Return proper error codes
if (!CheckWriteParameters(base_address, size_in_bytes))
return;
while (size_in_bytes > 0) {
GPU::Write<u32>(base_address + 0x1EB00000, *data);
size_in_bytes -= 4;
++data;
base_address += 4;
}
}
/**
* GSP_GPU::WriteHWRegs service function
*
* Writes sequential GSP GPU hardware registers
*
* Inputs:
* 1 : address of first GPU register
* 2 : number of registers to write sequentially
* 4 : pointer to source data array
*/
static void WriteHWRegs(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 reg_addr = cmd_buff[1];
u32 size = cmd_buff[2];
u32* src = (u32*)Memory::GetPointer(cmd_buff[4]);
WriteHWRegs(reg_addr, size, src);
}
/**
* Updates sequential GSP GPU hardware registers using parallel arrays of source data and masks.
* For each register, the value is updated only where the mask is high
*
* @param base_address The address of the first register in the sequence
* @param size_in_bytes The number of registers to update (size of data)
* @param data A pointer to the source data to use for updates
* @param masks A pointer to the masks
*/
static void WriteHWRegsWithMask(u32 base_address, u32 size_in_bytes, const u32* data, const u32* masks) {
// TODO: Return proper error codes
if (!CheckWriteParameters(base_address, size_in_bytes))
return;
while (size_in_bytes > 0) {
const u32 reg_address = base_address + 0x1EB00000;
u32 reg_value;
GPU::Read<u32>(reg_value, reg_address);
// Update the current value of the register only for set mask bits
reg_value = (reg_value & ~*masks) | (*data | *masks);
GPU::Write<u32>(reg_address, reg_value);
size_in_bytes -= 4;
++data;
++masks;
base_address += 4;
}
}
/**
* GSP_GPU::WriteHWRegsWithMask service function
*
* Updates sequential GSP GPU hardware registers using masks
*
* Inputs:
* 1 : address of first GPU register
* 2 : number of registers to update sequentially
* 4 : pointer to source data array
* 6 : pointer to mask array
*/
static void WriteHWRegsWithMask(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 reg_addr = cmd_buff[1];
u32 size = cmd_buff[2];
u32* src_data = (u32*)Memory::GetPointer(cmd_buff[4]);
u32* mask_data = (u32*)Memory::GetPointer(cmd_buff[6]);
WriteHWRegsWithMask(reg_addr, size, src_data, mask_data);
}
/// Read a GSP GPU hardware register
static void ReadHWRegs(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 reg_addr = cmd_buff[1];
u32 size = cmd_buff[2];
// TODO: Return proper error codes
if (reg_addr + size >= 0x420000) {
LOG_ERROR(Service_GSP, "Read address out of range! (address=0x%08x, size=0x%08x)", reg_addr, size);
return;
}
// size should be word-aligned
if ((size % 4) != 0) {
LOG_ERROR(Service_GSP, "Invalid size 0x%08x", size);
return;
}
u32* dst = (u32*)Memory::GetPointer(cmd_buff[0x41]);
while (size > 0) {
GPU::Read<u32>(*dst, reg_addr + 0x1EB00000);
size -= 4;
++dst;
reg_addr += 4;
}
}
static void SetBufferSwap(u32 screen_id, const FrameBufferInfo& info) {
u32 base_address = 0x400000;
if (info.active_fb == 0) {
WriteHWRegs(base_address + 4 * static_cast<u32>(GPU_REG_INDEX(framebuffer_config[screen_id].address_left1)), 4,
&info.address_left);
WriteHWRegs(base_address + 4 * static_cast<u32>(GPU_REG_INDEX(framebuffer_config[screen_id].address_right1)), 4,
&info.address_right);
} else {
WriteHWRegs(base_address + 4 * static_cast<u32>(GPU_REG_INDEX(framebuffer_config[screen_id].address_left2)), 4,
&info.address_left);
WriteHWRegs(base_address + 4 * static_cast<u32>(GPU_REG_INDEX(framebuffer_config[screen_id].address_right2)), 4,
&info.address_right);
}
WriteHWRegs(base_address + 4 * static_cast<u32>(GPU_REG_INDEX(framebuffer_config[screen_id].stride)), 4,
&info.stride);
WriteHWRegs(base_address + 4 * static_cast<u32>(GPU_REG_INDEX(framebuffer_config[screen_id].color_format)), 4,
&info.format);
WriteHWRegs(base_address + 4 * static_cast<u32>(GPU_REG_INDEX(framebuffer_config[screen_id].active_fb)), 4,
&info.shown_fb);
}
/**
* GSP_GPU::SetBufferSwap service function
*
* Updates GPU display framebuffer configuration using the specified parameters.
*
* Inputs:
* 1 : Screen ID (0 = top screen, 1 = bottom screen)
* 2-7 : FrameBufferInfo structure
* Outputs:
* 1: Result code
*/
static void SetBufferSwap(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 screen_id = cmd_buff[1];
FrameBufferInfo* fb_info = (FrameBufferInfo*)&cmd_buff[2];
SetBufferSwap(screen_id, *fb_info);
cmd_buff[1] = 0; // No error
}
/**
* GSP_GPU::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];
// TODO(purpasmart96): Verify return header on HW
cmd_buff[1] = RESULT_SUCCESS.raw; // No error
}
/**
* GSP_GPU::RegisterInterruptRelayQueue service function
* Inputs:
* 1 : "Flags" field, purpose is unknown
* 3 : Handle to GSP synchronization event
* Outputs:
* 0 : Result of function, 0 on success, otherwise error code
* 2 : Thread index into GSP command buffer
* 4 : Handle to GSP shared memory
*/
static void RegisterInterruptRelayQueue(Service::Interface* self) {
u32* cmd_buff = Kernel::GetCommandBuffer();
u32 flags = cmd_buff[1];
g_interrupt_event = Kernel::g_handle_table.Get<Kernel::Event>(cmd_buff[3]);
ASSERT_MSG((g_interrupt_event != nullptr), "handle is not valid!");
g_shared_memory = Kernel::SharedMemory::Create("GSPSharedMem");
Handle shmem_handle = Kernel::g_handle_table.Create(g_shared_memory).MoveFrom();
cmd_buff[1] = 0x2A07; // Value verified by 3dmoo team, purpose unknown, but needed for GSP init
cmd_buff[2] = g_thread_id++; // Thread ID
cmd_buff[4] = shmem_handle; // GSP shared memory
g_interrupt_event->Signal(); // TODO(bunnei): Is this correct?
}
/**
* Signals that the specified interrupt type has occurred to userland code
* @param interrupt_id ID of interrupt that is being signalled
* @todo This should probably take a thread_id parameter and only signal this thread?
* @todo This probably does not belong in the GSP module, instead move to video_core
*/
void SignalInterrupt(InterruptId interrupt_id) {
if (0 == g_interrupt_event) {
LOG_WARNING(Service_GSP, "cannot synchronize until GSP event has been created!");
return;
}
if (nullptr == g_shared_memory) {
LOG_WARNING(Service_GSP, "cannot synchronize until GSP shared memory has been created!");
return;
}
for (int thread_id = 0; thread_id < 0x4; ++thread_id) {
InterruptRelayQueue* interrupt_relay_queue = GetInterruptRelayQueue(thread_id);
u8 next = interrupt_relay_queue->index;
next += interrupt_relay_queue->number_interrupts;
next = next % 0x34; // 0x34 is the number of interrupt slots
interrupt_relay_queue->number_interrupts += 1;
interrupt_relay_queue->slot[next] = interrupt_id;
interrupt_relay_queue->error_code = 0x0; // No error
// Update framebuffer information if requested
// TODO(yuriks): Confirm where this code should be called. It is definitely updated without
// executing any GSP commands, only waiting on the event.
int screen_id = (interrupt_id == InterruptId::PDC0) ? 0 : (interrupt_id == InterruptId::PDC1) ? 1 : -1;
if (screen_id != -1) {
FrameBufferUpdate* info = GetFrameBufferInfo(thread_id, screen_id);
if (info->is_dirty) {
SetBufferSwap(screen_id, info->framebuffer_info[info->index]);
info->is_dirty = false;
}
}
}
g_interrupt_event->Signal();
}
/// Executes the next GSP command
static void ExecuteCommand(const Command& command, u32 thread_id) {
// Utility function to convert register ID to address
auto WriteGPURegister = [](u32 id, u32 data) {
GPU::Write<u32>(0x1EF00000 + 4 * id, data);
};
switch (command.id) {
// GX request DMA - typically used for copying memory from GSP heap to VRAM
case CommandId::REQUEST_DMA:
memcpy(Memory::GetPointer(command.dma_request.dest_address),
Memory::GetPointer(command.dma_request.source_address),
command.dma_request.size);
SignalInterrupt(InterruptId::DMA);
break;
// ctrulib homebrew sends all relevant command list data with this command,
// hence we do all "interesting" stuff here and do nothing in SET_COMMAND_LIST_FIRST.
// TODO: This will need some rework in the future.
case CommandId::SET_COMMAND_LIST_LAST:
{
auto& params = command.set_command_list_last;
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(command_processor_config.address)),
Memory::VirtualToPhysicalAddress(params.address) >> 3);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(command_processor_config.size)), params.size);
// TODO: Not sure if we are supposed to always write this .. seems to trigger processing though
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(command_processor_config.trigger)), 1);
break;
}
// It's assumed that the two "blocks" behave equivalently.
// Presumably this is done simply to allow two memory fills to run in parallel.
case CommandId::SET_MEMORY_FILL:
{
auto& params = command.memory_fill;
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(memory_fill_config[0].address_start)),
Memory::VirtualToPhysicalAddress(params.start1) >> 3);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(memory_fill_config[0].address_end)),
Memory::VirtualToPhysicalAddress(params.end1) >> 3);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(memory_fill_config[0].size)), params.end1 - params.start1);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(memory_fill_config[0].value)), params.value1);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(memory_fill_config[1].address_start)),
Memory::VirtualToPhysicalAddress(params.start2) >> 3);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(memory_fill_config[1].address_end)),
Memory::VirtualToPhysicalAddress(params.end2) >> 3);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(memory_fill_config[1].size)), params.end2 - params.start2);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(memory_fill_config[1].value)), params.value2);
break;
}
case CommandId::SET_DISPLAY_TRANSFER:
{
auto& params = command.image_copy;
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(display_transfer_config.input_address)),
Memory::VirtualToPhysicalAddress(params.in_buffer_address) >> 3);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(display_transfer_config.output_address)),
Memory::VirtualToPhysicalAddress(params.out_buffer_address) >> 3);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(display_transfer_config.input_size)), params.in_buffer_size);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(display_transfer_config.output_size)), params.out_buffer_size);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(display_transfer_config.flags)), params.flags);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(display_transfer_config.trigger)), 1);
break;
}
// TODO: Check if texture copies are implemented correctly..
case CommandId::SET_TEXTURE_COPY:
{
auto& params = command.image_copy;
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(display_transfer_config.input_address)),
Memory::VirtualToPhysicalAddress(params.in_buffer_address) >> 3);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(display_transfer_config.output_address)),
Memory::VirtualToPhysicalAddress(params.out_buffer_address) >> 3);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(display_transfer_config.input_size)), params.in_buffer_size);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(display_transfer_config.output_size)), params.out_buffer_size);
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(display_transfer_config.flags)), params.flags);
// TODO: Should this register be set to 1 or should instead its value be OR-ed with 1?
WriteGPURegister(static_cast<u32>(GPU_REG_INDEX(display_transfer_config.trigger)), 1);
break;
}
// TODO: Figure out what exactly SET_COMMAND_LIST_FIRST and SET_COMMAND_LIST_LAST
// are supposed to do.
case CommandId::SET_COMMAND_LIST_FIRST:
{
break;
}
default:
LOG_ERROR(Service_GSP, "unknown command 0x%08X", (int)command.id.Value());
}
}
/// This triggers handling of the GX command written to the command buffer in shared memory.
static void TriggerCmdReqQueue(Service::Interface* self) {
// Iterate through each thread's command queue...
for (unsigned thread_id = 0; thread_id < 0x4; ++thread_id) {
CommandBuffer* command_buffer = (CommandBuffer*)GetCommandBuffer(thread_id);
// Iterate through each command...
for (unsigned i = 0; i < command_buffer->number_commands; ++i) {
g_debugger.GXCommandProcessed((u8*)&command_buffer->commands[i]);
// Decode and execute command
ExecuteCommand(command_buffer->commands[i], thread_id);
// Indicates that command has completed
command_buffer->number_commands = command_buffer->number_commands - 1;
}
}
u32* cmd_buff = Kernel::GetCommandBuffer();
cmd_buff[1] = 0; // No error
}
const Interface::FunctionInfo FunctionTable[] = {
{0x00010082, WriteHWRegs, "WriteHWRegs"},
{0x00020084, WriteHWRegsWithMask, "WriteHWRegsWithMask"},
{0x00030082, nullptr, "WriteHWRegRepeat"},
{0x00040080, ReadHWRegs, "ReadHWRegs"},
{0x00050200, SetBufferSwap, "SetBufferSwap"},
{0x00060082, nullptr, "SetCommandList"},
{0x000700C2, nullptr, "RequestDma"},
{0x00080082, FlushDataCache, "FlushDataCache"},
{0x00090082, nullptr, "InvalidateDataCache"},
{0x000A0044, nullptr, "RegisterInterruptEvents"},
{0x000B0040, nullptr, "SetLcdForceBlack"},
{0x000C0000, TriggerCmdReqQueue, "TriggerCmdReqQueue"},
{0x000D0140, nullptr, "SetDisplayTransfer"},
{0x000E0180, nullptr, "SetTextureCopy"},
{0x000F0200, nullptr, "SetMemoryFill"},
{0x00100040, nullptr, "SetAxiConfigQoSMode"},
{0x00110040, nullptr, "SetPerfLogMode"},
{0x00120000, nullptr, "GetPerfLog"},
{0x00130042, RegisterInterruptRelayQueue, "RegisterInterruptRelayQueue"},
{0x00140000, nullptr, "UnregisterInterruptRelayQueue"},
{0x00150002, nullptr, "TryAcquireRight"},
{0x00160042, nullptr, "AcquireRight"},
{0x00170000, nullptr, "ReleaseRight"},
{0x00180000, nullptr, "ImportDisplayCaptureInfo"},
{0x00190000, nullptr, "SaveVramSysArea"},
{0x001A0000, nullptr, "RestoreVramSysArea"},
{0x001B0000, nullptr, "ResetGpuCore"},
{0x001C0040, nullptr, "SetLedForceOff"},
{0x001D0040, nullptr, "SetTestCommand"},
{0x001E0080, nullptr, "SetInternalPriorities"},
{0x001F0082, nullptr, "StoreDataCache"},
};
////////////////////////////////////////////////////////////////////////////////////////////////////
// Interface class
Interface::Interface() {
Register(FunctionTable);
g_interrupt_event = 0;
g_shared_memory = 0;
g_thread_id = 1;
}
} // namespace
