From f3d931aa7cfaf96baef8383b59a8938779541ee7 Mon Sep 17 00:00:00 2001
From: Amlal EL Mahrouss <amlalelmahrouss@icloud.com>
Date: Thu, 15 Aug 2024 18:35:34 +0200
Subject: [IMP] Moved source code into dev/ folder.

Signed-off-by: Amlal EL Mahrouss <amlalelmahrouss@icloud.com>
---
 dev/Kernel/KernelKit/PCI/Device.hxx | 79 +++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 dev/Kernel/KernelKit/PCI/Device.hxx

(limited to 'dev/Kernel/KernelKit/PCI/Device.hxx')

diff --git a/dev/Kernel/KernelKit/PCI/Device.hxx b/dev/Kernel/KernelKit/PCI/Device.hxx
new file mode 100644
index 00000000..a562219a
--- /dev/null
+++ b/dev/Kernel/KernelKit/PCI/Device.hxx
@@ -0,0 +1,79 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+------------------------------------------- */
+#pragma once
+
+#include <NewKit/Defines.hxx>
+
+namespace Kernel::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 fBus;
+		UShort fDevice;
+		UShort fFunction;
+		UShort fBar;
+	};
+} // namespace Kernel::PCI
+
+EXTERN_C void NewOSPCISetCfgTarget(Kernel::UInt bar);
+EXTERN_C Kernel::UInt NewOSPCIReadRaw(Kernel::UInt bar);
-- 
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