git: port from mercurial repo.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>

1 files changed, 84 insertions, 0 deletions

diff --git a/KernelKit/PCI/Device.hpp b/KernelKit/PCI/Device.hpp
new file mode 100644
index 00000000..9c89e1b5
--- /dev/null
+++ b/KernelKit/PCI/Device.hpp
@@ -0,0 +1,84 @@
+/*
+ *	========================================================
+ *
+ *	hCore
+ * 	Copyright XPX Corp, all rights reserved.
+ *
+ * 	========================================================
+ */
+#pragma once
+
+#include <NewKit/Defines.hpp>
+
+namespace hCore::PCI
+{
+    enum class PciConfigKind : UShort
+    {
+        ConfigAddress = 0xCF8,
+        ConfigData = 0xCFC,
+        Invalid = 0xFFF
+    };
+
+    class Device final
+    {
+    public:
+        Device() = default;
+
+    public:
+        explicit Device(UShort bus, UShort device, UShort function, UShort bar);
+
+        Device &operator=(const Device &) = default;
+
+        Device(const Device &) = default;
+
+        ~Device();
+
+    public:
+        UInt Read(UInt bar, Size szData);
+        void Write(UInt bar, UIntPtr data, Size szData);
+
+    public:
+        operator bool();
+
+    public:
+        template<typename T>
+        UInt Read(UInt bar)
+        {
+            static_assert(sizeof(T) <= 4, "64-bit PCI addressing is unsupported");
+            return Read(bar, sizeof(T));
+        }
+
+        template<typename T>
+        void Write(UInt bar, UIntPtr data)
+        {
+            static_assert(sizeof(T) <= 4, "64-bit PCI addressing is unsupported");
+            Write(bar, data, sizeof(T));
+        }
+
+    public:
+        UShort DeviceId();
+        UShort VendorId();
+        UShort InterfaceId();
+        UChar Class();
+        UChar Subclass();
+        UChar ProgIf();
+        UChar HeaderType();
+
+    public:
+        void EnableMmio();
+        void BecomeBusMaster(); // for PCI-DMA, PC-DMA does not need that.
+
+        UShort Vendor();
+
+    private:
+        UShort m_Bus;
+        UShort m_Device;
+        UShort m_Function;
+        UShort m_Bar;
+
+    };
+} // namespace hCore::PCI
+
+
+extern "C" void LumiaPCISetCfgTarget(hCore::UInt bar);
+extern "C" hCore::UInt LumiaPCIReadRaw(hCore::UInt bar);