#include <kernel/cpu/port.h>
#include <stdbool.h>
#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	ps2_device_info_t
	PS/2 device information structure. More...

Macros
#define	PS2_WAIT_TIMEOUT (CLOCKS_PER_SEC / 2)
	Wait timeout for PS/2 controller.

#define	PS2_SMALL_DELAY (CLOCKS_PER_SEC / 100)
	Small delay for various operations.

#define	PS2_LARGE_DELAY (CLOCKS_PER_SEC / 5)
	Large delay for various operations.

#define	PS2_COMMAND_RETRIES 3
	Number of retries for commands.

#define	PS2_READ(data)
	Read data from PS/2 controller.

#define	PS2_WRITE(data)
	Write data to PS/2 controller.

#define	PS2_CMD(command)
	Send a command to the PS/2 controller without reading response.

#define	PS2_CMD_AND_READ(command, data)
	Send a command to the PS/2 controller and read response.

#define	PS2_CMD_AND_WRITE(command, data)
	Send a command to the PS/2 controller and write data.

#define	PS2_DEV_CMD(device, command)
	Send a command to a PS/2 device without reading response.

#define	PS2_DEV_CMD_AND_READ(device, command, data)
	Send a command to a PS/2 device and read response.

#define	PS2_DEV_SUB_CMD(device, command, subCommand)
	Send a command and a subcommand to a PS/2 device.

Enumerations
enum	ps2_port_t { PS2_PORT_DATA = 0x60 , PS2_PORT_STATUS = 0x64 , PS2_PORT_CMD = 0x64 }
	PS/2 controller I/O ports. More...

enum	ps2_cmd_t { PS2_CMD_CFG_READ = 0x20 , PS2_CMD_CFG_WRITE = 0x60 , PS2_CMD_SECOND_DISABLE = 0xA7 , PS2_CMD_SECOND_ENABLE = 0xA8 , PS2_CMD_FIRST_DISABLE = 0xAD , PS2_CMD_FIRST_ENABLE = 0xAE , PS2_CMD_SECOND_TEST = 0xA9 , PS2_CMD_SELF_TEST = 0xAA , PS2_CMD_FIRST_TEST = 0xAB , PS2_CMD_DUMP = 0xAC , PS2_CMD_SECOND_WRITE = 0xD4 }
	PS/2 controller commands. More...

enum	ps2_status_bits_t { PS2_STATUS_OUT_FULL = (1 << 0) , PS2_STATUS_IN_FULL = (1 << 1) , PS2_STATUS_SYSTEM_FLAG = (1 << 2) , PS2_STATUS_CMD_DATA = (1 << 3) , PS2_STATUS_TIMEOUT_ERROR = (1 << 6) , PS2_STATUS_PARITY_ERROR = (1 << 7) }
	PS/2 controller status register bits. More...

enum	ps2_config_bits_t { PS2_CFG_FIRST_IRQ = (1 << 0) , PS2_CFG_SECOND_IRQ = (1 << 1) , PS2_CFG_SYSTEM_FLAG = (1 << 2) , PS2_CFG_RESERVED_3 = (1 << 3) , PS2_CFG_FIRST_CLOCK_DISABLE = (1 << 4) , PS2_CFG_SECOND_CLOCK_DISABLE = (1 << 5) , PS2_CFG_FIRST_TRANSLATION = (1 << 6) , PS2_CFG_RESERVED_7 = (1 << 7) }
	PS/2 controller configuration bits. More...

enum	ps2_device_cmd_t { PS2_DEV_CMD_ECHO = 0xEE , PS2_DEV_CMD_SET_LEDS = 0xED , PS2_DEV_CMD_SET_SCANCODE_SET = 0xF0 , PS2_DEV_CMD_IDENTIFY = 0xF2 , PS2_DEV_CMD_SET_TYPEMATIC = 0xF3 , PS2_DEV_CMD_ENABLE_SCANNING = 0xF4 , PS2_DEV_CMD_DISABLE_SCANNING = 0xF5 , PS2_DEV_CMD_SET_DEFAULTS = 0xF6 , PS2_DEV_CMD_RESEND = 0xFE , PS2_DEV_CMD_RESET = 0xFF }
	PS/2 device commands. More...

enum	ps2_device_t { PS2_DEV_NONE = -1 , PS2_DEV_FIRST = 0 , PS2_DEV_SECOND = 1 , PS2_DEV_COUNT = 2 }
	PS/2 device identifiers. More...

enum	ps2_device_type_t { PS2_DEV_TYPE_UNKNOWN , PS2_DEV_TYPE_KEYBOARD , PS2_DEV_TYPE_MOUSE_STANDARD , PS2_DEV_TYPE_MOUSE_SCROLL , PS2_DEV_TYPE_MOUSE_5BUTTON }
	PS/2 device types. More...

enum	ps2_self_test_response_t { PS2_SELF_TEST_PASS = 0x55 , PS2_SELF_TEST_FAIL = 0xFC }
	PS/2 controller self-test responses. More...

enum	ps2_device_test_response_t { PS2_DEV_TEST_PASS = 0x00 , PS2_DEV_TEST_CLOCK_STUCK_LOW = 0x01 , PS2_DEV_TEST_CLOCK_STUCK_HIGH = 0x02 , PS2_DEV_TEST_DATA_STUCK_LOW = 0x03 , PS2_DEV_TEST_DATA_STUCK_HIGH = 0x04 }
	PS/2 device test responses. More...

enum	ps2_device_response_t { PS2_DEV_RESPONSE_ACK = 0xFA , PS2_DEV_RESPONSE_RESEND = 0xFE , PS2_DEV_RESPONSE_BAT_OK = 0xAA , PS2_DEV_RESPONSE_KBD_EXTENDED = 0xE0 , PS2_DEV_RESPONSE_KBD_RELEASE = 0xF0 }
	PS/2 device command responses. More...

Functions
void	ps2_init (void)
	Initialize the PS/2 controller.

void	ps2_drain (void)
	Drain the PS/2 output buffer.

uint64_t	ps2_wait_until_set (ps2_status_bits_t status)
	Wait until status bit(s) is set.

uint64_t	ps2_wait_until_clear (ps2_status_bits_t status)
	Wait until status bit(s) is clear.

uint64_t	ps2_send_cmd (ps2_cmd_t command)
	Send a command to the PS/2 controller.

uint64_t	ps2_send_device_cmd (ps2_device_t device, ps2_device_cmd_t command)
	Send a command to a PS/2 device.

Data Structures

Macros

Enumerations

Functions