// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include "common/log.h"
#include "common/bit_field.h"
#include "core/mem_map.h"
#include "core/hle/hle.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/shared_memory.h"
#include "core/hle/service/gsp.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;
/// GSP shared memory GX command buffer header
union GX_CmdBufferHeader {
u32 hex;
// Current command index. This index is updated by GSP module after loading the command data,
// right before the command is processed. When this index is updated by GSP module, the total
// commands field is decreased by one as well.
BitField<0,8,u32> index;
// Total commands to process, must not be value 0 when GSP module handles commands. This must be
// <=15 when writing a command to shared memory. This is incremented by the application when
// writing a command to shared memory, after increasing this value TriggerCmdReqQueue is only
// used if this field is value 1.
BitField<8,8,u32> number_commands;
};
////////////////////////////////////////////////////////////////////////////////////////////////////
// Namespace GSP_GPU
namespace GSP_GPU {
Handle g_event = 0;
Handle g_shared_memory = 0;
u32 g_thread_id = 0;
enum {
REG_FRAMEBUFFER_1 = 0x00400468,
REG_FRAMEBUFFER_2 = 0x00400494,
};
/// Gets a pointer to the start (header) of a command buffer in GSP shared memory
static inline u8* GX_GetCmdBufferPointer(u32 thread_id, u32 offset=0) {
return Kernel::GetSharedMemoryPointer(g_shared_memory, 0x800 + (thread_id * 0x200) + offset);
}
/// Finishes execution of a GSP command
void GX_FinishCommand(u32 thread_id) {
GX_CmdBufferHeader* header = (GX_CmdBufferHeader*)GX_GetCmdBufferPointer(thread_id);
g_debugger.GXCommandProcessed(GX_GetCmdBufferPointer(thread_id, 0x20 + (header->index * 0x20)));
header->number_commands = header->number_commands - 1;
// TODO: Increment header->index?
}
/// Read a GSP GPU hardware register
void ReadHWRegs(Service::Interface* self) {
static const u32 framebuffer_1[] = {GPU::PADDR_VRAM_TOP_LEFT_FRAME1, GPU::PADDR_VRAM_TOP_RIGHT_FRAME1};
static const u32 framebuffer_2[] = {GPU::PADDR_VRAM_TOP_LEFT_FRAME2, GPU::PADDR_VRAM_TOP_RIGHT_FRAME2};
u32* cmd_buff = Service::GetCommandBuffer();
u32 reg_addr = cmd_buff[1];
u32 size = cmd_buff[2];
u32* dst = (u32*)Memory::GetPointer(cmd_buff[0x41]);
switch (reg_addr) {
// NOTE: Calling SetFramebufferLocation here is a hack... Not sure the correct way yet to set
// whether the framebuffers should be in VRAM or GSP heap, but from what I understand, if the
// user application is reading from either of these registers, then its going to be in VRAM.
// Top framebuffer 1 addresses
case REG_FRAMEBUFFER_1:
GPU::SetFramebufferLocation(GPU::FRAMEBUFFER_LOCATION_VRAM);
memcpy(dst, framebuffer_1, size);
break;
// Top framebuffer 2 addresses
case REG_FRAMEBUFFER_2:
GPU::SetFramebufferLocation(GPU::FRAMEBUFFER_LOCATION_VRAM);
memcpy(dst, framebuffer_2, size);
break;
default:
ERROR_LOG(GSP, "unknown register read at address %08X", reg_addr);
}
}
/**
* 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
*/
void RegisterInterruptRelayQueue(Service::Interface* self) {
u32* cmd_buff = Service::GetCommandBuffer();
u32 flags = cmd_buff[1];
g_event = cmd_buff[3];
_assert_msg_(GSP, (g_event != 0), "handle is not valid!");
Kernel::SetEventLocked(g_event, false);
// Hack - This function will permanently set the state of the GSP event such that GPU command
// synchronization barriers always passthrough. Correct solution would be to set this after the
// GPU as processed all queued up commands, but due to the emulator being single-threaded they
// will always be ready.
Kernel::SetPermanentLock(g_event, true);
cmd_buff[0] = 0; // Result - no error
cmd_buff[2] = g_thread_id; // ThreadID
cmd_buff[4] = g_shared_memory; // GSP shared memory
}
/// This triggers handling of the GX command written to the command buffer in shared memory.
void TriggerCmdReqQueue(Service::Interface* self) {
GX_CmdBufferHeader* header = (GX_CmdBufferHeader*)GX_GetCmdBufferPointer(g_thread_id);
u32* cmd_buff = (u32*)GX_GetCmdBufferPointer(g_thread_id, 0x20 + (header->index * 0x20));
switch (static_cast<GXCommandId>(cmd_buff[0])) {
// GX request DMA - typically used for copying memory from GSP heap to VRAM
case GXCommandId::REQUEST_DMA:
memcpy(Memory::GetPointer(cmd_buff[2]), Memory::GetPointer(cmd_buff[1]), cmd_buff[3]);
break;
case GXCommandId::SET_COMMAND_LIST_LAST:
GPU::Write<u32>(GPU::Registers::CommandListAddress, cmd_buff[1] >> 3);
GPU::Write<u32>(GPU::Registers::CommandListSize, cmd_buff[2] >> 3);
GPU::Write<u32>(GPU::Registers::ProcessCommandList, 1); // TODO: Not sure if we are supposed to always write this
// TODO: Move this to GPU
// TODO: Not sure what units the size is measured in
g_debugger.CommandListCalled(cmd_buff[1], (u32*)Memory::GetPointer(cmd_buff[1]), cmd_buff[2]);
break;
case GXCommandId::SET_MEMORY_FILL:
break;
case GXCommandId::SET_DISPLAY_TRANSFER:
break;
case GXCommandId::SET_TEXTURE_COPY:
break;
case GXCommandId::SET_COMMAND_LIST_FIRST:
{
//u32* buf0_data = (u32*)Memory::GetPointer(cmd_buff[1]);
//u32* buf1_data = (u32*)Memory::GetPointer(cmd_buff[3]);
//u32* buf2_data = (u32*)Memory::GetPointer(cmd_buff[5]);
break;
}
default:
ERROR_LOG(GSP, "unknown command 0x%08X", cmd_buff[0]);
}
GX_FinishCommand(g_thread_id);
}
const Interface::FunctionInfo FunctionTable[] = {
{0x00010082, nullptr, "WriteHWRegs"},
{0x00020084, nullptr, "WriteHWRegsWithMask"},
{0x00030082, nullptr, "WriteHWRegRepeat"},
{0x00040080, ReadHWRegs, "ReadHWRegs"},
{0x00050200, nullptr, "SetBufferSwap"},
{0x00060082, nullptr, "SetCommandList"},
{0x000700C2, nullptr, "RequestDma"},
{0x00080082, nullptr, "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"},
};
////////////////////////////////////////////////////////////////////////////////////////////////////
// Interface class
Interface::Interface() {
Register(FunctionTable, ARRAY_SIZE(FunctionTable));
g_shared_memory = Kernel::CreateSharedMemory("GSPSharedMem");
}
Interface::~Interface() {
}
} // namespace
