io.h File Reference

#include <stddef.h>
#include <stdint.h>

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Functions
static uint8_t	inb (uint16_t port)
	Reads and returns a byte from PORT. More...
static void	insb (uint16_t port, void *addr, size_t cnt)
	Reads CNT bytes from PORT, one after another, and stores them into the buffer starting at ADDR. More...
static uint16_t	inw (uint16_t port)
	Reads and returns 16 bits from PORT. More...
static void	insw (uint16_t port, void *addr, size_t cnt)
	Reads CNT 16-bit (halfword) units from PORT, one after another, and stores them into the buffer starting at ADDR. More...
static uint32_t	inl (uint16_t port)
	Reads and returns 32 bits from PORT. More...
static void	insl (uint16_t port, void *addr, size_t cnt)
	Reads CNT 32-bit (word) units from PORT, one after another, and stores them into the buffer starting at ADDR. More...
static void	outb (uint16_t port, uint8_t data)
	Writes byte DATA to PORT. More...
static void	outsb (uint16_t port, const void *addr, size_t cnt)
	Writes to PORT each byte of data in the CNT-byte buffer starting at ADDR. More...
static void	outw (uint16_t port, uint16_t data)
	Writes the 16-bit DATA to PORT. More...
static void	outsw (uint16_t port, const void *addr, size_t cnt)
	Writes to PORT each 16-bit unit (halfword) of data in the CNT-halfword buffer starting at ADDR. More...
static void	outl (uint16_t port, uint32_t data)
	Writes the 32-bit DATA to PORT. More...
static void	outsl (uint16_t port, const void *addr, size_t cnt)
	Writes to PORT each 32-bit unit (word) of data in the CNT-word buffer starting at ADDR. More...

Function Documentation

inb()

static uint8_t inb ( uint16_t  port )

inlinestatic

Reads and returns a byte from PORT.

Definition at line 9 of file io.h.

Referenced by check_device_type(), cmos_read(), find_cursor(), interrupt_handler(), keyboard_interrupt(), putc_poll(), reset_channel(), select_device(), serial_interrupt(), shutdown_reboot(), speaker_off(), speaker_on(), wait_until_idle(), and wait_while_busy().

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inl()

static uint32_t inl ( uint16_t  port )

inlinestatic

Reads and returns 32 bits from PORT.

Definition at line 47 of file io.h.

insb()

static void insb ( uint16_t  port, void *  addr, size_t  cnt  )

inlinestatic

Reads CNT bytes from PORT, one after another, and stores them into the buffer starting at ADDR.

Definition at line 20 of file io.h.

insl()

static void insl ( uint16_t  port, void *  addr, size_t  cnt  )

inlinestatic

Reads CNT 32-bit (word) units from PORT, one after another, and stores them into the buffer starting at ADDR.

Definition at line 58 of file io.h.

insw()

static void insw ( uint16_t  port, void *  addr, size_t  cnt  )

inlinestatic

Reads CNT 16-bit (halfword) units from PORT, one after another, and stores them into the buffer starting at ADDR.

Definition at line 39 of file io.h.

Referenced by input_sector().

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inw()

static uint16_t inw ( uint16_t  port )

inlinestatic

Reads and returns 16 bits from PORT.

Definition at line 28 of file io.h.

outb()

static void outb ( uint16_t  port, uint8_t  data  )

inlinestatic

Writes byte DATA to PORT.

Definition at line 66 of file io.h.

Referenced by cmos_read(), find_cursor(), init_poll(), issue_pio_command(), pic_end_of_interrupt(), pic_init(), pit_configure_channel(), putc_poll(), reset_channel(), select_device(), select_sector(), serial_interrupt(), set_serial(), shutdown_power_off(), shutdown_reboot(), speaker_off(), speaker_on(), and write_ier().

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outl()

static void outl ( uint16_t  port, uint32_t  data  )

inlinestatic

Writes the 32-bit DATA to PORT.

Definition at line 100 of file io.h.

outsb()

static void outsb ( uint16_t  port, const void *  addr, size_t  cnt  )

inlinestatic

Writes to PORT each byte of data in the CNT-byte buffer starting at ADDR.

Definition at line 75 of file io.h.

outsl()

static void outsl ( uint16_t  port, const void *  addr, size_t  cnt  )

inlinestatic

Writes to PORT each 32-bit unit (word) of data in the CNT-word buffer starting at ADDR.

threads/io.h

Definition at line 109 of file io.h.

outsw()

static void outsw ( uint16_t  port, const void *  addr, size_t  cnt  )

inlinestatic

Writes to PORT each 16-bit unit (halfword) of data in the CNT-halfword buffer starting at ADDR.

Definition at line 92 of file io.h.

Referenced by output_sector().

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outw()

static void outw ( uint16_t  port, uint16_t  data  )

inlinestatic

Writes the 16-bit DATA to PORT.

Definition at line 83 of file io.h.

Referenced by move_cursor(), and shutdown_power_off().

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