Kernel: Rework whole ATA driver structure

Make ATA driver more compatible when we are adding SATA support

kernel/include/kernel/Storage/ATA/ATADevice.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#include <kernel/Storage/ATA/ATABus.h>
+#include <kernel/Storage/StorageDevice.h>
+
+namespace Kernel
+{
+
+	class ATADevice final : public StorageDevice
+	{
+	public:
+		static BAN::ErrorOr<BAN::RefPtr<ATADevice>> create(BAN::RefPtr<ATABus>, ATABus::DeviceType, bool is_secondary, BAN::Span<const uint16_t> identify_data);
+
+		virtual uint32_t sector_size() const override { return m_sector_words * 2; }
+		virtual uint64_t total_size() const override { return m_lba_count * sector_size(); }
+
+		bool is_secondary() const { return m_is_secondary; }
+		uint32_t words_per_sector() const { return m_sector_words; }
+		uint64_t sector_count() const { return m_lba_count; }
+
+		BAN::StringView model() const { return m_model; }
+		BAN::StringView name() const;
+
+	protected:
+		virtual BAN::ErrorOr<void> read_sectors_impl(uint64_t, uint8_t, uint8_t*) override;
+		virtual BAN::ErrorOr<void> write_sectors_impl(uint64_t, uint8_t, const uint8_t*) override;
+
+	private:
+		ATADevice(BAN::RefPtr<ATABus>, ATABus::DeviceType, bool is_secodary);
+		BAN::ErrorOr<void> initialize(BAN::Span<const uint16_t> identify_data);
+
+	private:
+		BAN::RefPtr<ATABus> m_bus;
+		const ATABus::DeviceType m_type;
+		const bool m_is_secondary;
+		
+		uint16_t m_signature;
+		uint16_t m_capabilities;
+		uint32_t m_command_set;
+		uint32_t m_sector_words;
+		uint64_t m_lba_count;
+		char m_model[41];
+
+	public:
+		virtual Mode mode() const override { return { Mode::IFBLK | Mode::IRUSR | Mode::IRGRP }; }
+		virtual uid_t uid() const override { return 0; }
+		virtual gid_t gid() const override { return 0; }
+		virtual dev_t rdev() const override { return m_rdev; }
+
+	private:
+		virtual BAN::ErrorOr<size_t> read_impl(off_t, void*, size_t) override;
+
+	public:
+		const dev_t m_rdev;
+	};
+
+}