From a0c57256cc020ead59173cc4ee97bff20c3091de Mon Sep 17 00:00:00 2001
From: Billy Laws <blaws05@gmail.com>
Date: Mon, 25 Oct 2021 22:54:03 +0100
Subject: [PATCH] Hookup FlatMemoryManager for SMMU into SoC

The SMMU is used to control the mappings of peripherals such as the VIC
and NVDEC.
---
 app/CMakeLists.txt                    |  1 +
 app/src/main/cpp/skyline/soc.h        |  4 +++-
 app/src/main/cpp/skyline/soc/smmu.cpp | 10 ++++++++++
 app/src/main/cpp/skyline/soc/smmu.h   | 16 ++++++++++++++++
 4 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 app/src/main/cpp/skyline/soc/smmu.cpp
 create mode 100644 app/src/main/cpp/skyline/soc/smmu.h

diff --git a/app/CMakeLists.txt b/app/CMakeLists.txt
index 43d02e79..c7d8ca01 100644
--- a/app/CMakeLists.txt
+++ b/app/CMakeLists.txt
@@ -135,6 +135,7 @@ add_library(skyline SHARED
         ${source_DIR}/skyline/gpu/presentation_engine.cpp
         ${source_DIR}/skyline/gpu/interconnect/command_executor.cpp
         ${source_DIR}/skyline/gpu/interconnect/command_nodes.cpp
+        ${source_DIR}/skyline/soc/smmu.cpp
         ${source_DIR}/skyline/soc/host1x/syncpoint.cpp
         ${source_DIR}/skyline/soc/gm20b/channel.cpp
         ${source_DIR}/skyline/soc/gm20b/gpfifo.cpp
diff --git a/app/src/main/cpp/skyline/soc.h b/app/src/main/cpp/skyline/soc.h
index 32c13d59..be537d11 100644
--- a/app/src/main/cpp/skyline/soc.h
+++ b/app/src/main/cpp/skyline/soc.h
@@ -3,16 +3,18 @@
 
 #pragma once
 
+#include "soc/smmu.h"
 #include "soc/host1x.h"
 #include "soc/gm20b/gpfifo.h"
 
 namespace skyline::soc {
     /**
      * @brief An interface into all emulated components of the Tegra X1 SoC
-     * @note Refer to the Tegra X1 Processor Block Diagram (1.2) for more information
+     * @note Refer to the Tegra X1 Processor Block Diagram (1.2) in the TRM for more information
      */
     class SOC {
       public:
+        SMMU smmu;
         host1x::Host1X host1x;
 
         SOC(const DeviceState &state) {}
diff --git a/app/src/main/cpp/skyline/soc/smmu.cpp b/app/src/main/cpp/skyline/soc/smmu.cpp
new file mode 100644
index 00000000..80015136
--- /dev/null
+++ b/app/src/main/cpp/skyline/soc/smmu.cpp
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: MPL-2.0
+// Copyright © 2021 Skyline Team and Contributors (https://github.com/skyline-emu/)
+
+#include <common/address_space.inc>
+#include "smmu.h"
+
+namespace skyline {
+    template class FlatAddressSpaceMap<u32, 0, u8 *, nullptr, true, soc::SmmuAddressSpaceBits>;
+    template class FlatMemoryManager<u32, 0, soc::SmmuAddressSpaceBits>;
+}
diff --git a/app/src/main/cpp/skyline/soc/smmu.h b/app/src/main/cpp/skyline/soc/smmu.h
new file mode 100644
index 00000000..e0ae4e9b
--- /dev/null
+++ b/app/src/main/cpp/skyline/soc/smmu.h
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: MPL-2.0
+// Copyright © 2021 Skyline Team and Contributors (https://github.com/skyline-emu/)
+
+#pragma once
+
+#include <common/address_space.h>
+
+namespace skyline::soc {
+    static constexpr u8 SmmuAddressSpaceBits{32}; //!< The size of the SMMU AS in bits
+
+    /**
+     * @brief The SMMU (System Memory Management Unit) class handles mapping between the host1x peripheral virtual address space and an application's address space
+     * @note The SMMU is implemented entirely as a template specialization over FlatMemoryManager
+     */
+    using SMMU = FlatMemoryManager<u32, 0, SmmuAddressSpaceBits>;
+}