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// 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/service/gsp.h"
#include "core/hw/lcd.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
/// 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;
};
/// Gets the address of the start (header) of a command buffer in GSP shared memory
static inline u32 GX_GetCmdBufferAddress(u32 thread_id) {
return (0x10002000 + 0x800 + (thread_id * 0x200));
}
/// 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 Memory::GetPointer(GX_GetCmdBufferAddress(thread_id) + offset);
}
/// Finishes execution of a GSP command
void GX_FinishCommand(u32 thread_id) {
GX_CmdBufferHeader* header = (GX_CmdBufferHeader*)GX_GetCmdBufferPointer(thread_id);
header->number_commands = header->number_commands - 1;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
// Namespace GSP_GPU
namespace GSP_GPU {
u32 g_thread_id = 0;
enum {
CMD_GX_REQUEST_DMA = 0x00000000,
};
enum {
REG_FRAMEBUFFER_1 = 0x00400468,
REG_FRAMEBUFFER_2 = 0x00400494,
};
/// Read a GSP GPU hardware register
void ReadHWRegs(Service::Interface* self) {
static const u32 framebuffer_1[] = {LCD::PADDR_VRAM_TOP_LEFT_FRAME1, LCD::PADDR_VRAM_TOP_RIGHT_FRAME1};
static const u32 framebuffer_2[] = {LCD::PADDR_VRAM_TOP_LEFT_FRAME2, LCD::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:
LCD::SetFramebufferLocation(LCD::FRAMEBUFFER_LOCATION_VRAM);
memcpy(dst, framebuffer_1, size);
break;
// Top framebuffer 2 addresses
case REG_FRAMEBUFFER_2:
LCD::SetFramebufferLocation(LCD::FRAMEBUFFER_LOCATION_VRAM);
memcpy(dst, framebuffer_2, size);
break;
default:
ERROR_LOG(GSP, "unknown register read at address %08X", reg_addr);
}
}
void RegisterInterruptRelayQueue(Service::Interface* self) {
u32* cmd_buff = Service::GetCommandBuffer();
u32 flags = cmd_buff[1];
u32 event_handle = cmd_buff[3]; // TODO(bunnei): Implement event handling
cmd_buff[2] = g_thread_id; // ThreadID
}
/// 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 (cmd_buff[0]) {
// GX request DMA - typically used for copying memory from GSP heap to VRAM
case CMD_GX_REQUEST_DMA:
memcpy(Memory::GetPointer(cmd_buff[2]), Memory::GetPointer(cmd_buff[1]), cmd_buff[3]);
break;
default:
ERROR_LOG(GSP, "unknown command 0x%08X", cmd_buff[0]);
}
GX_FinishCommand(g_thread_id);
}
const Interface::FunctionInfo FunctionTable[] = {
{0x00010082, NULL, "WriteHWRegs"},
{0x00020084, NULL, "WriteHWRegsWithMask"},
{0x00030082, NULL, "WriteHWRegRepeat"},
{0x00040080, ReadHWRegs, "ReadHWRegs"},
{0x00050200, NULL, "SetBufferSwap"},
{0x00060082, NULL, "SetCommandList"},
{0x000700C2, NULL, "RequestDma"},
{0x00080082, NULL, "FlushDataCache"},
{0x00090082, NULL, "InvalidateDataCache"},
{0x000A0044, NULL, "RegisterInterruptEvents"},
{0x000B0040, NULL, "SetLcdForceBlack"},
{0x000C0000, TriggerCmdReqQueue, "TriggerCmdReqQueue"},
{0x000D0140, NULL, "SetDisplayTransfer"},
{0x000E0180, NULL, "SetTextureCopy"},
{0x000F0200, NULL, "SetMemoryFill"},
{0x00100040, NULL, "SetAxiConfigQoSMode"},
{0x00110040, NULL, "SetPerfLogMode"},
{0x00120000, NULL, "GetPerfLog"},
{0x00130042, RegisterInterruptRelayQueue, "RegisterInterruptRelayQueue"},
{0x00140000, NULL, "UnregisterInterruptRelayQueue"},
{0x00150002, NULL, "TryAcquireRight"},
{0x00160042, NULL, "AcquireRight"},
{0x00170000, NULL, "ReleaseRight"},
{0x00180000, NULL, "ImportDisplayCaptureInfo"},
{0x00190000, NULL, "SaveVramSysArea"},
{0x001A0000, NULL, "RestoreVramSysArea"},
{0x001B0000, NULL, "ResetGpuCore"},
{0x001C0040, NULL, "SetLedForceOff"},
{0x001D0040, NULL, "SetTestCommand"},
{0x001E0080, NULL, "SetInternalPriorities"},
};
////////////////////////////////////////////////////////////////////////////////////////////////////
// Interface class
Interface::Interface() {
Register(FunctionTable, ARRAY_SIZE(FunctionTable));
}
Interface::~Interface() {
}
} // namespace
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