Rename LCD to GPU.

1 files changed, 194 insertions, 0 deletions

diff --git a/src/core/hw/gpu.cpp b/src/core/hw/gpu.cpp
new file mode 100644
index 000000000..632e1aaac
--- /dev/null
+++ b/src/core/hw/gpu.cpp
@@ -0,0 +1,194 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#include "common/common_types.h"
+#include "common/log.h"
+
+#include "core/core.h"
+#include "core/mem_map.h"
+#include "core/hle/kernel/thread.h"
+#include "core/hw/gpu.h"
+
+#include "video_core/video_core.h"
+
+
+namespace GPU {
+
+Registers g_regs;
+
+static const u32 kFrameTicks = 268123480 / 60;  ///< 268MHz / 60 frames per second
+
+u64 g_last_ticks = 0; ///< Last CPU ticks
+
+/**
+ * Sets whether the framebuffers are in the GSP heap (FCRAM) or VRAM
+ * @param 
+ */
+void SetFramebufferLocation(const FramebufferLocation mode) {
+    switch (mode) {
+    case FRAMEBUFFER_LOCATION_FCRAM:
+        g_regs.framebuffer_top_left_1   = PADDR_TOP_LEFT_FRAME1;
+        g_regs.framebuffer_top_left_2   = PADDR_TOP_LEFT_FRAME2;
+        g_regs.framebuffer_top_right_1  = PADDR_TOP_RIGHT_FRAME1;
+        g_regs.framebuffer_top_right_2  = PADDR_TOP_RIGHT_FRAME2;
+        g_regs.framebuffer_sub_left_1   = PADDR_SUB_FRAME1;
+        //g_regs.framebuffer_sub_left_2  = unknown;
+        g_regs.framebuffer_sub_right_1  = PADDR_SUB_FRAME2;
+        //g_regs.framebufferr_sub_right_2 = unknown;
+        break;
+
+    case FRAMEBUFFER_LOCATION_VRAM:
+        g_regs.framebuffer_top_left_1   = PADDR_VRAM_TOP_LEFT_FRAME1;
+        g_regs.framebuffer_top_left_2   = PADDR_VRAM_TOP_LEFT_FRAME2;
+        g_regs.framebuffer_top_right_1  = PADDR_VRAM_TOP_RIGHT_FRAME1;
+        g_regs.framebuffer_top_right_2  = PADDR_VRAM_TOP_RIGHT_FRAME2;
+        g_regs.framebuffer_sub_left_1   = PADDR_VRAM_SUB_FRAME1;
+        //g_regs.framebuffer_sub_left_2  = unknown;
+        g_regs.framebuffer_sub_right_1  = PADDR_VRAM_SUB_FRAME2;
+        //g_regs.framebufferr_sub_right_2 = unknown;
+        break;
+    }
+}
+
+/**
+ * Gets the location of the framebuffers
+ * @return Location of framebuffers as FramebufferLocation enum
+ */
+const FramebufferLocation GetFramebufferLocation() {
+    if ((g_regs.framebuffer_top_right_1 & ~Memory::VRAM_MASK) == Memory::VRAM_PADDR) {
+        return FRAMEBUFFER_LOCATION_VRAM;
+    } else if ((g_regs.framebuffer_top_right_1 & ~Memory::FCRAM_MASK) == Memory::FCRAM_PADDR) {
+        return FRAMEBUFFER_LOCATION_FCRAM;
+    } else {
+        ERROR_LOG(GPU, "unknown framebuffer location!");
+    }
+    return FRAMEBUFFER_LOCATION_UNKNOWN;
+}
+
+/**
+ * Gets a read-only pointer to a framebuffer in memory
+ * @param address Physical address of framebuffer
+ * @return Returns const pointer to raw framebuffer
+ */
+const u8* GetFramebufferPointer(const u32 address) {
+    switch (GetFramebufferLocation()) {
+    case FRAMEBUFFER_LOCATION_FCRAM:
+        return (const u8*)Memory::GetPointer(Memory::VirtualAddressFromPhysical_FCRAM(address));
+    case FRAMEBUFFER_LOCATION_VRAM:
+        return (const u8*)Memory::GetPointer(Memory::VirtualAddressFromPhysical_VRAM(address));
+    default:
+        ERROR_LOG(GPU, "unknown framebuffer location");
+    }
+    return NULL;
+}
+
+template <typename T>
+inline void Read(T &var, const u32 addr) {
+    switch (addr) {
+    case REG_FRAMEBUFFER_TOP_LEFT_1:
+        var = g_regs.framebuffer_top_left_1;
+        break;
+
+    case REG_FRAMEBUFFER_TOP_LEFT_2:
+        var = g_regs.framebuffer_top_left_2;
+        break;
+
+    case REG_FRAMEBUFFER_TOP_RIGHT_1:
+        var = g_regs.framebuffer_top_right_1;
+        break;
+
+    case REG_FRAMEBUFFER_TOP_RIGHT_2:
+        var = g_regs.framebuffer_top_right_2;
+        break;
+
+    case REG_FRAMEBUFFER_SUB_LEFT_1:
+        var = g_regs.framebuffer_sub_left_1;
+        break;
+
+    case REG_FRAMEBUFFER_SUB_RIGHT_1:
+        var = g_regs.framebuffer_sub_right_1;
+        break;
+
+    case CommandListSize:
+        var = g_regs.command_list_size;
+        break;
+
+    case CommandListAddress:
+        var = g_regs.command_list_address;
+        break;
+
+    case ProcessCommandList:
+        var = g_regs.command_processing_enabled;
+        break;
+
+    default:
+        ERROR_LOG(GPU, "unknown Read%d @ 0x%08X", sizeof(var) * 8, addr);
+        break;
+    }
+}
+
+template <typename T>
+inline void Write(u32 addr, const T data) {
+    switch (addr) {
+    case CommandListSize:
+        g_regs.command_list_size = data;
+        break;
+
+    case CommandListAddress:
+        g_regs.command_list_address = data;
+        break;
+
+    case ProcessCommandList:
+        g_regs.command_processing_enabled = data;
+        if (g_regs.command_processing_enabled & 1)
+        {
+            // u32* buffer = (u32*)Memory::GetPointer(g_regs.command_list_address << 3);
+            ERROR_LOG(GPU, "Beginning %x bytes of commands from address %x", g_regs.command_list_size, g_regs.command_list_address << 3);
+            // TODO: Process command list!
+        }
+        break;
+
+    default:
+        ERROR_LOG(GPU, "unknown Write%d 0x%08X @ 0x%08X", sizeof(data) * 8, data, addr);
+        break;
+    }
+}
+
+// Explicitly instantiate template functions because we aren't defining this in the header:
+
+template void Read<u64>(u64 &var, const u32 addr);
+template void Read<u32>(u32 &var, const u32 addr);
+template void Read<u16>(u16 &var, const u32 addr);
+template void Read<u8>(u8 &var, const u32 addr);
+
+template void Write<u64>(u32 addr, const u64 data);
+template void Write<u32>(u32 addr, const u32 data);
+template void Write<u16>(u32 addr, const u16 data);
+template void Write<u8>(u32 addr, const u8 data);
+
+/// Update hardware
+void Update() {
+    u64 current_ticks = Core::g_app_core->GetTicks();
+
+    // Fake a vertical blank
+    if ((current_ticks - g_last_ticks) >= kFrameTicks) {
+        g_last_ticks = current_ticks;
+        VideoCore::g_renderer->SwapBuffers();
+        Kernel::WaitCurrentThread(WAITTYPE_VBLANK);
+    }
+}
+
+/// Initialize hardware
+void Init() {
+    g_last_ticks = Core::g_app_core->GetTicks();
+    SetFramebufferLocation(FRAMEBUFFER_LOCATION_FCRAM);
+    NOTICE_LOG(GPU, "initialized OK");
+}
+
+/// Shutdown hardware
+void Shutdown() {
+    NOTICE_LOG(GPU, "shutdown OK");
+}
+
+} // namespace