From 139ea93512aeead8a4aee3910a3de86eb109a838 Mon Sep 17 00:00:00 2001
From: Fernando Sahmkow <fsahmkow27@gmail.com>
Date: Fri, 5 Nov 2021 15:52:31 +0100
Subject: VideoCore: implement channels on gpu caches.

---
 src/video_core/control/channel_state_cache.h | 68 ++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 src/video_core/control/channel_state_cache.h

(limited to 'src/video_core/control/channel_state_cache.h')

diff --git a/src/video_core/control/channel_state_cache.h b/src/video_core/control/channel_state_cache.h
new file mode 100644
index 000000000..c8298c003
--- /dev/null
+++ b/src/video_core/control/channel_state_cache.h
@@ -0,0 +1,68 @@
+#pragma once
+
+#include <deque>
+#include <limits>
+#include <unordered_map>
+
+#include "common/common_types.h"
+
+namespace Tegra {
+
+namespace Engines {
+class Maxwell3D;
+class KeplerCompute;
+} // namespace Engines
+
+class MemoryManager;
+
+namespace Control {
+struct ChannelState;
+}
+
+} // namespace Tegra
+
+namespace VideoCommon {
+
+class ChannelInfo {
+public:
+    ChannelInfo() = delete;
+    ChannelInfo(Tegra::Control::ChannelState& state);
+    ChannelInfo(const ChannelInfo& state) = delete;
+    ChannelInfo& operator=(const ChannelInfo&) = delete;
+    ChannelInfo(ChannelInfo&& other) = default;
+    ChannelInfo& operator=(ChannelInfo&& other) = default;
+
+    Tegra::Engines::Maxwell3D& maxwell3d;
+    Tegra::Engines::KeplerCompute& kepler_compute;
+    Tegra::MemoryManager& gpu_memory;
+};
+
+template <class P>
+class ChannelSetupCaches {
+public:
+    /// Operations for seting the channel of execution.
+
+    /// Create channel state.
+    void CreateChannel(Tegra::Control::ChannelState& channel);
+
+    /// Bind a channel for execution.
+    void BindToChannel(s32 id);
+
+    /// Erase channel's state.
+    void EraseChannel(s32 id);
+
+protected:
+    static constexpr size_t UNSET_CHANNEL{std::numeric_limits<size_t>::max()};
+
+    std::deque<P> channel_storage;
+    std::deque<size_t> free_channel_ids;
+    std::unordered_map<s32, size_t> channel_map;
+
+    P* channel_state;
+    size_t current_channel_id{UNSET_CHANNEL};
+    Tegra::Engines::Maxwell3D* maxwell3d;
+    Tegra::Engines::KeplerCompute* kepler_compute;
+    Tegra::MemoryManager* gpu_memory;
+};
+
+} // namespace VideoCommon
-- 
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