Reading from HDD is now possible !

1 files changed, 47 insertions, 0 deletions

diff --git a/Source/Kernel/Devices/ATA/ATAController.class.h b/Source/Kernel/Devices/ATA/ATAController.class.h
new file mode 100644
index 0000000..a12b835
--- /dev/null
+++ b/Source/Kernel/Devices/ATA/ATAController.class.h
@@ -0,0 +1,47 @@
+#ifndef DEF_ATACONTROLLER_CLASS_H
+#define DEF_ATACONTROLLER_CLASS_H
+
+#include <Devices/Device.proto.h>
+
+#define ATA_BUS1_BASE 0x1F0
+#define ATA_BUS2_BASE 0x170
+
+#define ATA_PORT_DATA 0
+#define ATA_PORT_FEATURES_ERROR 1
+#define ATA_PORT_SECT_COUNT 2
+#define ATA_PORT_PARTIAL1 3
+#define ATA_PORT_PARTIAL2 4
+#define ATA_PORT_PARTIAL3 5
+#define ATA_PORT_DRIVE_SELECT 6
+#define ATA_PORT_COMMAND 7
+
+#define ATA_CMD_IDENTIFY 0xEC
+#define ATA_CMD_READ 0x20
+#define ATA_CMD_WRITE 0x30
+
+class ATADrive;
+
+class ATAController : public Device {
+	friend class ATADrive;
+	private:
+	ATAController(u32int base, u8int number);
+
+	u32int m_base;
+	u8int m_number;
+
+	ATADrive* m_drives[2];
+
+	void writeWord(u16int port, u16int word) { Sys::outw(m_base + port, word); }
+	void writeByte(u16int port, u8int byte) { Sys::outb(m_base + port, byte); }
+	u8int readByte(u16int port) { return Sys::inb(m_base + port); }
+	u16int readWord(u16int port) { return Sys::inw(m_base + port); }
+
+	void identify(bool slave);	//Identifies a drive and adds it to m_drives
+
+	public:
+	static void detect();
+	String getClass();
+	String getName();
+};
+
+#endif