I/O port instructions

Functions
l4_uint8_t	l4util_in8 (l4_uint16_t port)
	Read byte from I/O port.
l4_uint16_t	l4util_in16 (l4_uint16_t port)
	Read 16-bit-value from I/O port.
l4_uint32_t	l4util_in32 (l4_uint16_t port)
	Read 32-bit-value from I/O port.
void	l4util_ins8 (l4_uint16_t port, l4_umword_t addr, l4_umword_t count)
	Read a block of 8-bit-value from I/O ports.
void	l4util_ins16 (l4_uint16_t port, l4_umword_t addr, l4_umword_t count)
	Read a block of 16-bit-value from I/O ports.
void	l4util_ins32 (l4_uint16_t port, l4_umword_t addr, l4_umword_t count)
	Read a block of 32-bit-value from I/O ports.
void	l4util_out8 (l4_uint8_t value, l4_uint16_t port)
	Write byte to I/O port.
void	l4util_out16 (l4_uint16_t value, l4_uint16_t port)
	Write 16-bit-value to I/O port.
void	l4util_out32 (l4_uint32_t value, l4_uint16_t port)
	Write 32-bit-value to I/O port.
void	l4util_iodelay (void)
	delay I/O port access by writing to port 0x80

---

Function Documentation

l4_uint8_t l4util_in8

(

l4_uint16_t

port

)

[inline]

Read byte from I/O port.

Parameters:

port

I/O port address

Returns:

value

Definition at line 142 of file ARCH-amd64/port_io.h.

l4_uint16_t l4util_in16

(

l4_uint16_t

port

)

[inline]

Read 16-bit-value from I/O port.

Parameters:

port

I/O port address

Returns:

value

Definition at line 150 of file ARCH-amd64/port_io.h.

l4_uint32_t l4util_in32

(

l4_uint16_t

port

)

[inline]

Read 32-bit-value from I/O port.

Parameters:

port

I/O port address

Returns:

value

Definition at line 158 of file ARCH-amd64/port_io.h.

void l4util_ins8	(	l4_uint16_t	port,
		l4_umword_t	addr,
		l4_umword_t	count
	)			[inline]

Read a block of 8-bit-value from I/O ports.

Parameters:

	port	I/O port address
	addr	address of buffer
	count	number of I/O operations

Returns:

value

Definition at line 166 of file ARCH-amd64/port_io.h.

void l4util_ins16	(	l4_uint16_t	port,
		l4_umword_t	addr,
		l4_umword_t	count
	)			[inline]

Read a block of 16-bit-value from I/O ports.

Parameters:

	port	I/O port address
	addr	address of buffer
	count	number of I/O operations

Returns:

value

Definition at line 175 of file ARCH-amd64/port_io.h.

void l4util_ins32	(	l4_uint16_t	port,
		l4_umword_t	addr,
		l4_umword_t	count
	)			[inline]

Read a block of 32-bit-value from I/O ports.

Parameters:

	port	I/O port address
	addr	address of buffer
	count	number of I/O operations

Returns:

value

Definition at line 184 of file ARCH-amd64/port_io.h.

void l4util_out8	(	l4_uint8_t	value,
		l4_uint16_t	port
	)			[inline]

Write byte to I/O port.

Parameters:

	port	I/O port address
	value	value to write

Definition at line 193 of file ARCH-amd64/port_io.h.

void l4util_out16	(	l4_uint16_t	value,
		l4_uint16_t	port
	)			[inline]

Write 16-bit-value to I/O port.

Parameters:

	port	I/O port address
	value	value to write

Definition at line 199 of file ARCH-amd64/port_io.h.

void l4util_out32	(	l4_uint32_t	value,
		l4_uint16_t	port
	)			[inline]

Write 32-bit-value to I/O port.

Parameters:

	port	I/O port address
	value	value to write

Definition at line 205 of file ARCH-amd64/port_io.h.