ns8250.c File Reference

#include <assert.h>
#include <stdio.h>
#include <errno.h>
#include <bool.h>
#include <fibril_synch.h>
#include <stdlib.h>
#include <str.h>
#include <ctype.h>
#include <macros.h>
#include <malloc.h>
#include <dirent.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <ddi.h>
#include <libarch/ddi.h>
#include <ddf/driver.h>
#include <ddf/interrupt.h>
#include <ddf/log.h>
#include <ops/char_dev.h>
#include <devman.h>
#include <ipc/devman.h>
#include <device/hw_res.h>
#include <ipc/serial_ctl.h>
#include "cyclic_buffer.h"

Go to the source code of this file.

Data Structures
struct	ns8250
	The driver data for the serial port devices. More...
Defines
#define	DLAB_MASK   (1 << 7)
#define	MAX_BAUD_RATE   115200
#define	NAME   "ns8250"
#define	NS8250(fnode)   ((ns8250_t *) ((fnode)->dev->driver_data))
	Obtain soft-state structure from function node.
#define	NS8250_FROM_DEV(dnode)   ((ns8250_t *) ((dnode)->driver_data))
	Obtain soft-state structure from device node.
#define	REG_COUNT   7
Typedefs
typedef ns8250	ns8250_t
	The driver data for the serial port devices.
Enumerations
enum	stop_bit_t { ONE_STOP_BIT, TWO_STOP_BITS }
	The number of stop bits used by the serial port. More...
enum	word_length_t
	The number of bits of one data unit send by the serial port.
Functions
static void	clear_dlab (ioport8_t *port)
	Clear Divisor Latch Access Bit.
static void	enable_dlab (ioport8_t *port)
	Set Divisor Latch Access Bit.
static bool	is_transmit_empty (ioport8_t *port)
	Find out wheter it is possible to send data.
int	main (int argc, char *argv[])
	Main entry point.
static int	ns8250_add_device (ddf_dev_t *dev)
	The add_device callback method of the serial port driver.
static void	ns8250_close (ddf_fun_t *fun)
	Close the device.
static void	ns8250_default_handler (ddf_fun_t *fun, ipc_callid_t callid, ipc_call_t *call)
	Default handler for client requests which are not handled by the standard interfaces.
static void	ns8250_delete (ns8250_t *ns)
	Delete soft-state structure.
static void	ns8250_dev_cleanup (ns8250_t *ns)
	Clean up the serial port soft-state.
static int	ns8250_dev_initialize (ns8250_t *ns)
	Initialize serial port device.
static bool	ns8250_dev_probe (ns8250_t *ns)
	Probe the serial port device for its presence.
static void	ns8250_get_props (ddf_dev_t *dev, unsigned int *baud_rate, unsigned int *parity, unsigned int *word_length, unsigned int *stop_bits)
	Get parameters of the serial communication which are set to the specified device.
static void	ns8250_init (void)
	Initialize the serial port driver.
static void	ns8250_initialize_port (ns8250_t *ns)
	Initialize the serial port device.
static int	ns8250_interrupt_enable (ns8250_t *ns)
	Enable interrupts for the serial port device.
static void	ns8250_interrupt_handler (ddf_dev_t *dev, ipc_callid_t iid, ipc_call_t *icall)
	The interrupt handler.
static ns8250_t *	ns8250_new (void)
	Create per-device soft-state structure.
static int	ns8250_open (ddf_fun_t *fun)
	Open the device.
static bool	ns8250_pio_enable (ns8250_t *ns)
	Enable the i/o ports of the device.
static unsigned int	ns8250_port_get_baud_rate (ioport8_t *port)
	Get baud rate used by the serial port device.
static void	ns8250_port_get_com_props (ioport8_t *port, unsigned int *parity, unsigned int *word_length, unsigned int *stop_bits)
	Get the parameters of the serial communication set on the serial port device.
static void	ns8250_port_interrupts_disable (ioport8_t *port)
	Disable interrupts on the serial port device.
static void	ns8250_port_interrupts_enable (ioport8_t *port)
	Enable interrupts on the serial port device.
static int	ns8250_port_set_baud_rate (ioport8_t *port, unsigned int baud_rate)
	Set baud rate of the serial communication on the serial device.
static int	ns8250_port_set_com_props (ioport8_t *port, unsigned int parity, unsigned int word_length, unsigned int stop_bits)
	Set the parameters of the serial communication on the serial port device.
static void	ns8250_putchar (ns8250_t *ns, uint8_t c)
	Write a character to the serial port.
static int	ns8250_read (ddf_fun_t *fun, char *buf, size_t count)
	Read data from the serial port device.
static uint8_t	ns8250_read_8 (ioport8_t *port)
	Read one byte from the serial port.
static void	ns8250_read_from_device (ns8250_t *ns)
	Read the data from the serial port device and store them to the input buffer.
static bool	ns8250_received (ioport8_t *port)
	Find out if there is some incomming data available on the serial port.
static int	ns8250_register_interrupt_handler (ns8250_t *ns)
	Register the interrupt handler for the device.
static int	ns8250_set_props (ddf_dev_t *dev, unsigned int baud_rate, unsigned int parity, unsigned int word_length, unsigned int stop_bits)
	Set parameters of the serial communication to the specified serial port device.
static int	ns8250_unregister_interrupt_handler (ns8250_t *ns)
	Unregister the interrupt handler for the device.
static int	ns8250_write (ddf_fun_t *fun, char *buf, size_t count)
	Write data to the serial port.
static void	ns8250_write_8 (ioport8_t *port, uint8_t c)
	Write one character on the serial port.
Variables
static char_dev_ops_t	ns8250_char_dev_ops
	The character interface's callbacks.
static ddf_dev_ops_t	ns8250_dev_ops
static driver_t	ns8250_driver
	The serial port device driver structure.
static driver_ops_t	ns8250_ops
	The serial port device driver's standard operations.

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Detailed Description

Definition in file ns8250.c.

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