feat(kernel/drivers): migrate drivers to the kernel

make the drivers builtin

Signed-off-by: EnderIce2 <enderice2@protonmail.com>

Kernel/drivers/video/kdm/kdm.cpp

@@ -0,0 +1,128 @@
+/*
+	This file is part of Fennix Kernel.
+
+	Fennix Kernel is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Kernel is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <driver.hpp>
+
+extern Driver::Manager *DriverManager;
+namespace Driver::KernelDisplayManager
+{
+	dev_t DriverID;
+
+	struct
+	{
+		dev_t kdm;
+	} ids;
+
+	int Open(struct Inode *Node, int Flags, mode_t Mode)
+	{
+		dev_t min = Node->GetMinor();
+		if (min == ids.kdm)
+			return -ENOSYS;
+
+		return -ENODEV;
+	}
+
+	int Close(struct Inode *Node)
+	{
+		dev_t min = Node->GetMinor();
+		if (min == ids.kdm)
+			return -ENOSYS;
+
+		return -ENODEV;
+	}
+
+	int Ioctl(struct Inode *Node, unsigned long Request, void *Argp)
+	{
+		dev_t min = Node->GetMinor();
+		if (min == ids.kdm)
+			return -ENOSYS;
+
+		return -ENODEV;
+	}
+
+	ssize_t Read(struct Inode *Node, void *Buffer, size_t Size, off_t Offset)
+	{
+		dev_t min = Node->GetMinor();
+		if (min == ids.kdm)
+			return -ENOSYS;
+
+		return -ENODEV;
+	}
+
+	ssize_t Write(struct Inode *Node, const void *Buffer, size_t Size, off_t Offset)
+	{
+		dev_t min = Node->GetMinor();
+		if (min == ids.kdm)
+			return -ENOSYS;
+
+		return -ENODEV;
+	}
+
+	off_t Seek(struct Inode *Node, off_t Offset) { return -ENOSYS; }
+	int Stat(struct Inode *Node, struct kstat *Stat) { return -ENOSYS; }
+
+	const struct InodeOperations ops = {
+		.Lookup = nullptr,
+		.Create = nullptr,
+		.Remove = nullptr,
+		.Rename = nullptr,
+		.Read = Read,
+		.Write = Write,
+		.Truncate = nullptr,
+		.Open = Open,
+		.Close = Close,
+		.Ioctl = Ioctl,
+		.ReadDir = nullptr,
+		.MkDir = nullptr,
+		.RmDir = nullptr,
+		.SymLink = nullptr,
+		.ReadLink = nullptr,
+		.Seek = Seek,
+		.Stat = Stat,
+	};
+
+	int Entry()
+	{
+		mode_t mode = 0;
+
+		/* c rw- rw- rw- */
+		mode = S_IRUSR | S_IWUSR |
+			   S_IRGRP | S_IWGRP |
+			   S_IROTH | S_IWOTH |
+			   S_IFCHR;
+		ids.kdm = DriverManager->CreateDeviceFile(DriverID, "kdm", mode, &ops);
+		return 0;
+	}
+
+	int Final()
+	{
+		DriverManager->UnregisterDevice(DriverID, ids.kdm);
+		return 0;
+	}
+
+	int Panic() { return 0; }
+	int Probe() { return 0; }
+
+	REGISTER_BUILTIN_DRIVER(kdm,
+							"Kernel Display Manager Driver",
+							"enderice2",
+							1, 0, 0,
+							Entry,
+							Final,
+							Panic,
+							Probe);
+}