Initial commit

kernel/drivers/ports.h

@@ -0,0 +1,51 @@
+#ifndef MY_KERNEL_DRIVERS_PORT_H
+#define MY_KERNEL_DRIVERS_PORT_H
+
+//http://www.osdever.net/FreeVGA/vga/crtcreg.htm#0A
+#define PORT_REG_SCREEN_CTRL 0x3d4
+#define PORT_REG_SCREEN_CTRL_CURSOR_H 0x0E
+#define PORT_REG_SCREEN_CTRL_CURSOR_L 0x0F
+#define PORT_REG_SCREEN_DATA 0x3d5
+
+// https://wiki.osdev.org/Serial_Ports
+#define PORT_SERIAL_0 0x3f8
+#define PORT_SERIAL_1 0x2f8
+#define PORT_SERIAL_2 0x3e8
+#define PORT_SERIAL_3 0x2e8
+
+#define PORT_SERIAL_DATA 0
+#define PORT_SERIAL_INTERRUPT 1
+#define PORT_SERIAL_DLAB_LSB 0
+#define PORT_SERIAL_DLAB_MSB 1
+#define PORT_SERIAL_INTERRUPT_ID_FIFO 2
+#define PORT_SERIAL_LINE_CONTROL 3
+#define PORT_SERIAL_MODEM_CONTROL 4
+#define PORT_SERIAL_LINE_STATUS 5
+#define PORT_SERIAL_MODEM_STATUS 6
+#define PORT_SERIAL_SCRATCH 6
+
+// https://wiki.osdev.org/PIT
+#define PORT_PIT_COMMAND 0x43
+#define PIT_MODE_BIN 0x0
+#define PIT_MODE_HW_STROBE 0b0101
+#define PIT_MODE_SQUARE_WAVE 0b0110
+#define PIT_ACCESS_MODE_HL 0b000011
+#define PIT_CHANNEL_0 0b00000000
+#define PORT_PIT_DATA_0 0x40
+#define PORT_PIT_DATA_1 0x41
+#define PORT_PIT_DATA_3 0x42
+
+// https://wiki.osdev.org/%228042%22_PS/2_Controller
+#define PORT_PS2_DATA 0x60
+#define PORT_PS2_STATUS 0x64
+#define PORT_PS2_COMMAND 0x64
+
+unsigned char port_byte_in(unsigned short port);
+
+void port_byte_out(unsigned short port, unsigned char data);
+
+unsigned short port_word_in(unsigned short port);
+
+void port_word_out(unsigned short port, unsigned short data);
+
+#endif