152 lines
4.8 KiB
C++
152 lines
4.8 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include "common/common_types.h"
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#include "common/log.h"
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#include "core/core.h"
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#include "core/mem_map.h"
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#include "core/hw/lcd.h"
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#include "video_core/video_core.h"
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namespace LCD {
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Registers g_regs;
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static const u32 kFrameTicks = 268123480 / 60; ///< 268MHz / 60 frames per second
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u64 g_last_ticks = 0; ///< Last CPU ticks
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/**
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* Sets whether the framebuffers are in the GSP heap (FCRAM) or VRAM
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* @param
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*/
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void SetFramebufferLocation(const FramebufferLocation mode) {
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switch (mode) {
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case FRAMEBUFFER_LOCATION_FCRAM:
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g_regs.framebuffer_top_left_1 = PADDR_TOP_LEFT_FRAME1;
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g_regs.framebuffer_top_left_2 = PADDR_TOP_LEFT_FRAME2;
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g_regs.framebuffer_top_right_1 = PADDR_TOP_RIGHT_FRAME1;
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g_regs.framebuffer_top_right_2 = PADDR_TOP_RIGHT_FRAME2;
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g_regs.framebuffer_sub_left_1 = PADDR_SUB_FRAME1;
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//g_regs.framebuffer_sub_left_2 = unknown;
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g_regs.framebuffer_sub_right_1 = PADDR_SUB_FRAME2;
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//g_regs.framebufferr_sub_right_2 = unknown;
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break;
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case FRAMEBUFFER_LOCATION_VRAM:
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g_regs.framebuffer_top_left_1 = PADDR_VRAM_TOP_LEFT_FRAME1;
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g_regs.framebuffer_top_left_2 = PADDR_VRAM_TOP_LEFT_FRAME2;
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g_regs.framebuffer_top_right_1 = PADDR_VRAM_TOP_RIGHT_FRAME1;
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g_regs.framebuffer_top_right_2 = PADDR_VRAM_TOP_RIGHT_FRAME2;
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g_regs.framebuffer_sub_left_1 = PADDR_VRAM_SUB_FRAME1;
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//g_regs.framebuffer_sub_left_2 = unknown;
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g_regs.framebuffer_sub_right_1 = PADDR_VRAM_SUB_FRAME2;
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//g_regs.framebufferr_sub_right_2 = unknown;
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break;
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}
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}
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/**
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* Gets the location of the framebuffers
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* @return Location of framebuffers as FramebufferLocation enum
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*/
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const FramebufferLocation GetFramebufferLocation() {
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if ((g_regs.framebuffer_top_right_1 & ~Memory::VRAM_MASK) == Memory::VRAM_PADDR) {
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return FRAMEBUFFER_LOCATION_VRAM;
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} else if ((g_regs.framebuffer_top_right_1 & ~Memory::FCRAM_MASK) == Memory::FCRAM_PADDR) {
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return FRAMEBUFFER_LOCATION_FCRAM;
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} else {
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ERROR_LOG(LCD, "unknown framebuffer location!");
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}
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return FRAMEBUFFER_LOCATION_UNKNOWN;
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}
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/**
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* Gets a read-only pointer to a framebuffer in memory
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* @param address Physical address of framebuffer
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* @return Returns const pointer to raw framebuffer
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*/
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const u8* GetFramebufferPointer(const u32 address) {
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switch (GetFramebufferLocation()) {
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case FRAMEBUFFER_LOCATION_FCRAM:
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return (const u8*)Memory::GetPointer(Memory::VirtualAddressFromPhysical_FCRAM(address));
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case FRAMEBUFFER_LOCATION_VRAM:
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return (const u8*)Memory::GetPointer(Memory::VirtualAddressFromPhysical_VRAM(address));
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default:
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ERROR_LOG(LCD, "unknown framebuffer location");
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}
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return NULL;
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}
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template <typename T>
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inline void Read(T &var, const u32 addr) {
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switch (addr) {
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case REG_FRAMEBUFFER_TOP_LEFT_1:
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var = g_regs.framebuffer_top_left_1;
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break;
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case REG_FRAMEBUFFER_TOP_LEFT_2:
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var = g_regs.framebuffer_top_left_2;
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break;
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case REG_FRAMEBUFFER_TOP_RIGHT_1:
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var = g_regs.framebuffer_top_right_1;
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break;
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case REG_FRAMEBUFFER_TOP_RIGHT_2:
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var = g_regs.framebuffer_top_right_2;
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break;
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case REG_FRAMEBUFFER_SUB_LEFT_1:
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var = g_regs.framebuffer_sub_left_1;
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break;
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case REG_FRAMEBUFFER_SUB_RIGHT_1:
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var = g_regs.framebuffer_sub_right_1;
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break;
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default:
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ERROR_LOG(LCD, "unknown Read%d @ 0x%08X", sizeof(var) * 8, addr);
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break;
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}
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}
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template <typename T>
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inline void Write(u32 addr, const T data) {
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ERROR_LOG(LCD, "unknown Write%d 0x%08X @ 0x%08X", sizeof(data) * 8, data, addr);
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}
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// Explicitly instantiate template functions because we aren't defining this in the header:
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template void Read<u64>(u64 &var, const u32 addr);
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template void Read<u32>(u32 &var, const u32 addr);
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template void Read<u16>(u16 &var, const u32 addr);
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template void Read<u8>(u8 &var, const u32 addr);
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template void Write<u64>(u32 addr, const u64 data);
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template void Write<u32>(u32 addr, const u32 data);
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template void Write<u16>(u32 addr, const u16 data);
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template void Write<u8>(u32 addr, const u8 data);
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/// Update hardware
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void Update() {
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u64 current_ticks = Core::g_app_core->GetTicks();
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if ((current_ticks - g_last_ticks) >= kFrameTicks) {
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g_last_ticks = current_ticks;
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VideoCore::g_renderer->SwapBuffers();
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}
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}
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/// Initialize hardware
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void Init() {
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g_last_ticks = Core::g_app_core->GetTicks();
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SetFramebufferLocation(FRAMEBUFFER_LOCATION_FCRAM);
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NOTICE_LOG(LCD, "initialized OK");
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}
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/// Shutdown hardware
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void Shutdown() {
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NOTICE_LOG(LCD, "shutdown OK");
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}
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} // namespace
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