#include "../fb.h"
#include <dos.h>
#include <pc.h>
#include <go32.h>
#include <dpmi.h>

Include dependency graph for io_serial.c:

Data Structures
struct	irq_props_t

struct	buffer_t

struct	comm_props_t

struct	DOS_SERIAL_INFO

Macros
#define	ICU_BASE 0x20

#define	ICU_OCW2 (ICU_BASE + 0)

#define	ICU_MASK (ICU_BASE + 1)

#define	UART_RBR 0x00 /* DLAB = 0 - Receive Buffer*/

#define	UART_THR 0x00 /* DLAB = 0 - Transmit Hold */

#define	UART_IER 0x01 /* interrupt enable register */

#define	UART_IIR 0x02 /* interrupt ID register */

#define	UART_FCR 0x02 /* FIFO control register */

#define	UART_LCR 0x03 /* line control / data format */

#define	UART_MCR 0x04 /* modem control register */

#define	UART_LSR 0x05 /* line status register */

#define	UART_MSR 0x06 /* modem status register */

#define	UART_SCR 0x07 /* scratch register */

#define	UART_DL_LSB 0x00 /* DLAB = 1 */

#define	UART_DL_MSB 0x01 /* DLAB = 1 */

#define	LCR_DLAB 0x80

#define	MCR_OUT2 8

#define	MCR_OUT1 4

#define	MCR_RTS 2

#define	MCR_DTR 1

#define	IER_SINP 8

#define	IER_EBRK 4

#define	IER_TBE 2

#define	IER_RXRD 1

#define	FLAG_KEEP_DTR 1

#define	FLAG_SUPPRESS_RTS 2

#define	UART_IS_NONE 0

#define	UART_IS_8250 1

#define	UART_IS_16450 2

#define	UART_IS_16550 3

#define	UART_IS_16550A 4

#define	DEFAULT_BUFFERSIZE 2048

#define	MAX_BUFFERSIZE 0x40000000

#define	COMM_CHECKED_CHIPTYPE 1

#define	COMM_HAVE_BUFFER 2

#define	FIRST_IRQ 3

#define	IRQ_COUNT 5

#define	LAST_IRQ (FIRST_IRQ+IRQ_COUNT-1)

#define	MAX_COMM 4

#define	COMM_PROPS(n) &comm_props[n-1]

#define	IRQ_PROPS(n) &irq_props[n-FIRST_IRQ]

#define	ENABLE() enable()

#define	DISABLE() disable()

Functions
static int	UART_detect_chiptype (unsigned int baseaddr)

static int	UART_set_baud (unsigned int baseaddr, int baud)

static int	UART_set_data_format (unsigned int baseaddr, int parity, int data, int stop)

static int	comm_isr (unsigned irq)

static int	comm_init (int com_num, unsigned int baseaddr, int irq)

static void	comm_exit (int com_num)

static void	comm_handler_irq_3 (void)

static void	comm_handler_irq_4 (void)

static void	comm_handler_irq_5 (void)

static void	comm_handler_irq_6 (void)

static void	comm_handler_irq_7 (void)

static int	comm_init_irq (irq_props_t *ip)

static void	comm_exit_irq (irq_props_t *ip)

int	comm_open (int com_num, int baud, int parity, int data, int stop, int txbufsize, int rxbufsize, int flags, int irq)

int	comm_close (int com_num)

int	comm_putc (int com_num, int ch)

int	comm_getc (int com_num)

int	comm_bytes_remaining (int com_num)

static unsigned int	next_pow2 (unsigned int n)

static void	BUFFER_reset (buffer_t *buf)

static int	BUFFER_alloc (buffer_t *buf, int size)

static void	BUFFER_free (buffer_t *buf)

static int	BUFFER_putc (buffer_t *buf, int ch)

static void	end_BUFFER_putc (void)

static int	BUFFER_getc (buffer_t *buf)

static void	end_BUFFER_getc (void)

void	end_comm_handler_irq_3 (void)

void	end_comm_handler_irq_4 (void)

void	end_comm_handler_irq_5 (void)

void	end_comm_handler_irq_6 (void)

void	end_comm_handler_irq_7 (void)

static void	end_comm_isr (void)

static void	comm_init_addref (void)

static void	comm_init_release (void)

int	fb_SerialOpen (FB_FILE handle, int iPort, FB_SERIAL_OPTIONS options, const char pszDevice, void *ppvHandle)

int	fb_SerialGetRemaining (FB_FILE handle, void pvHandle, fb_off_t *pLength)

int	fb_SerialWrite (FB_FILE handle, void pvHandle, const void *data, size_t length)

int	fb_SerialRead (FB_FILE handle, void pvHandle, void data, size_t pLength)

int	fb_SerialClose (FB_FILE handle, void pvHandle)

Variables
static int	comm_init_count = 0

static irq_props_t	irq_props [IRQ_COUNT]

static comm_props_t	comm_props [MAX_COMM]

Macro Definition Documentation

#define COMM_CHECKED_CHIPTYPE 1

Definition at line 54 of file io_serial.c.

#define COMM_HAVE_BUFFER 2

Definition at line 55 of file io_serial.c.

#define COMM_PROPS ( n) &comm_props[n-1]

Definition at line 64 of file io_serial.c.

#define DEFAULT_BUFFERSIZE 2048

Definition at line 51 of file io_serial.c.

#define DISABLE ( ) disable()

Definition at line 144 of file io_serial.c.

#define ENABLE ( ) enable()

Definition at line 143 of file io_serial.c.

#define FIRST_IRQ 3

Definition at line 58 of file io_serial.c.

#define FLAG_KEEP_DTR 1

Definition at line 41 of file io_serial.c.

#define FLAG_SUPPRESS_RTS 2

Definition at line 42 of file io_serial.c.

#define ICU_BASE 0x20

Definition at line 10 of file io_serial.c.

#define ICU_MASK (ICU_BASE + 1)

Definition at line 12 of file io_serial.c.

#define ICU_OCW2 (ICU_BASE + 0)

Definition at line 11 of file io_serial.c.

#define IER_EBRK 4

Definition at line 36 of file io_serial.c.

#define IER_RXRD 1

Definition at line 38 of file io_serial.c.

#define IER_SINP 8

Definition at line 35 of file io_serial.c.

#define IER_TBE 2

Definition at line 37 of file io_serial.c.

#define IRQ_COUNT 5

Definition at line 59 of file io_serial.c.

#define IRQ_PROPS ( n) &irq_props[n-FIRST_IRQ]

Definition at line 65 of file io_serial.c.

#define LAST_IRQ (FIRST_IRQ+IRQ_COUNT-1)

Definition at line 60 of file io_serial.c.

#define LCR_DLAB 0x80

Definition at line 28 of file io_serial.c.

#define MAX_BUFFERSIZE 0x40000000

Definition at line 52 of file io_serial.c.

#define MAX_COMM 4

Definition at line 62 of file io_serial.c.

#define MCR_DTR 1

Definition at line 33 of file io_serial.c.

#define MCR_OUT1 4

Definition at line 31 of file io_serial.c.

#define MCR_OUT2 8

Definition at line 30 of file io_serial.c.

#define MCR_RTS 2

Definition at line 32 of file io_serial.c.

#define UART_DL_LSB 0x00 /* DLAB = 1 */

Definition at line 25 of file io_serial.c.

#define UART_DL_MSB 0x01 /* DLAB = 1 */

Definition at line 26 of file io_serial.c.

#define UART_FCR 0x02 /* FIFO control register */

Definition at line 19 of file io_serial.c.

#define UART_IER 0x01 /* interrupt enable register */

Definition at line 17 of file io_serial.c.

#define UART_IIR 0x02 /* interrupt ID register */

Definition at line 18 of file io_serial.c.

#define UART_IS_16450 2

Definition at line 47 of file io_serial.c.

#define UART_IS_16550 3

Definition at line 48 of file io_serial.c.

#define UART_IS_16550A 4

Definition at line 49 of file io_serial.c.

#define UART_IS_8250 1

Definition at line 46 of file io_serial.c.

#define UART_IS_NONE 0

Definition at line 45 of file io_serial.c.

#define UART_LCR 0x03 /* line control / data format */

Definition at line 20 of file io_serial.c.

#define UART_LSR 0x05 /* line status register */

Definition at line 22 of file io_serial.c.

#define UART_MCR 0x04 /* modem control register */

Definition at line 21 of file io_serial.c.

#define UART_MSR 0x06 /* modem status register */

Definition at line 23 of file io_serial.c.

#define UART_RBR 0x00 /* DLAB = 0 - Receive Buffer*/

Definition at line 15 of file io_serial.c.

#define UART_SCR 0x07 /* scratch register */

Definition at line 24 of file io_serial.c.

#define UART_THR 0x00 /* DLAB = 0 - Transmit Hold */

Definition at line 16 of file io_serial.c.

Function Documentation

static int BUFFER_alloc	(	buffer_t *	buf,
		int	size
	)

static

Definition at line 212 of file io_serial.c.

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static void BUFFER_free ( buffer_t * buf)

static

Definition at line 231 of file io_serial.c.

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static int BUFFER_getc ( buffer_t * buf)

static

Definition at line 256 of file io_serial.c.

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static int BUFFER_putc	(	buffer_t *	buf,
		int	ch
	)

static

Definition at line 243 of file io_serial.c.

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static void BUFFER_reset ( buffer_t * buf)

static

Definition at line 202 of file io_serial.c.

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int comm_bytes_remaining ( int com_num)

Definition at line 884 of file io_serial.c.

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int comm_close ( int com_num)

Definition at line 832 of file io_serial.c.

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static void comm_exit ( int com_num)

static

Definition at line 701 of file io_serial.c.

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static void comm_exit_irq ( irq_props_t * ip)

static

Definition at line 587 of file io_serial.c.

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int comm_getc ( int com_num)

Definition at line 873 of file io_serial.c.

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static void comm_handler_irq_3 ( void )

static

Definition at line 396 of file io_serial.c.

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static void comm_handler_irq_4 ( void )

static

Definition at line 397 of file io_serial.c.

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static void comm_handler_irq_5 ( void )

static

Definition at line 398 of file io_serial.c.

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static void comm_handler_irq_6 ( void )

static

Definition at line 399 of file io_serial.c.

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static void comm_handler_irq_7 ( void )

static

Definition at line 400 of file io_serial.c.

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static int comm_init	(	int	com_num,
		unsigned int	baseaddr,
		int	irq
	)

static

Definition at line 596 of file io_serial.c.

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static void comm_init_addref ( void )

static

Definition at line 493 of file io_serial.c.

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static int comm_init_irq ( irq_props_t * ip)

static

Definition at line 546 of file io_serial.c.

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static void comm_init_release ( void )

static

Definition at line 519 of file io_serial.c.

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static int comm_isr ( unsigned irq)

static

Definition at line 404 of file io_serial.c.

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int comm_open	(	int	com_num,
		int	baud,
		int	parity,
		int	data,
		int	stop,
		int	txbufsize,
		int	rxbufsize,
		int	flags,
		int	irq
	)

Definition at line 768 of file io_serial.c.

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int comm_putc	(	int	com_num,
		int	ch
	)

Definition at line 854 of file io_serial.c.

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static void end_BUFFER_getc ( void )

static

Definition at line 267 of file io_serial.c.

static void end_BUFFER_putc ( void )

static

Definition at line 254 of file io_serial.c.

void end_comm_handler_irq_3 ( void )

Definition at line 396 of file io_serial.c.

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void end_comm_handler_irq_4 ( void )

Definition at line 397 of file io_serial.c.

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void end_comm_handler_irq_5 ( void )

Definition at line 398 of file io_serial.c.

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void end_comm_handler_irq_6 ( void )

Definition at line 399 of file io_serial.c.

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void end_comm_handler_irq_7 ( void )

Definition at line 400 of file io_serial.c.

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static void end_comm_isr ( void )

static

Definition at line 491 of file io_serial.c.

int fb_SerialClose	(	FB_FILE *	handle,
		void *	pvHandle
	)

Definition at line 1038 of file io_serial.c.

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int fb_SerialGetRemaining	(	FB_FILE *	handle,
		void *	pvHandle,
		fb_off_t *	pLength
	)

Definition at line 968 of file io_serial.c.

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int fb_SerialOpen	(	FB_FILE *	handle,
		int	iPort,
		FB_SERIAL_OPTIONS *	options,
		const char *	pszDevice,
		void **	ppvHandle
	)

Definition at line 896 of file io_serial.c.

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int fb_SerialRead	(	FB_FILE *	handle,
		void *	pvHandle,
		void *	data,
		size_t *	pLength
	)

Definition at line 1008 of file io_serial.c.

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int fb_SerialWrite	(	FB_FILE *	handle,
		void *	pvHandle,
		const void *	data,
		size_t	length
	)

Definition at line 984 of file io_serial.c.

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static unsigned int next_pow2 ( unsigned int n)

inlinestatic

Definition at line 190 of file io_serial.c.

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static int UART_detect_chiptype ( unsigned int baseaddr)

static

Definition at line 269 of file io_serial.c.

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static int UART_set_baud	(	unsigned int	baseaddr,
		int	baud
	)

static

Definition at line 306 of file io_serial.c.

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static int UART_set_data_format	(	unsigned int	baseaddr,
		int	parity,
		int	data,
		int	stop
	)

static

Definition at line 331 of file io_serial.c.

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Variable Documentation

int comm_init_count = 0

static

Definition at line 163 of file io_serial.c.

comm_props_t comm_props[MAX_COMM]

static

Initial value:

= {
        { 0x3f8, 4, 4, 0, 0, 0, 0, 0 },
        { 0x2f8, 3, 3, 0, 0, 0, 0, 0 },
        { 0x3e8, 4, 4, 0, 0, 0, 0, 0 },
        { 0x2e8, 3, 3, 0, 0, 0, 0, 0 }
}

Definition at line 183 of file io_serial.c.

irq_props_t irq_props[IRQ_COUNT]

static

Initial value:

= {
        { 0, 0, 0, 3, 0xb, comm_handler_irq_3 },
        { 0, 0, 0, 4, 0xc, comm_handler_irq_4 },
        { 0, 0, 0, 5, 0xd, comm_handler_irq_5 },
        { 0, 0, 0, 6, 0xe, comm_handler_irq_6 },
        { 0, 0, 0, 7, 0xf, comm_handler_irq_7 }
}

Definition at line 166 of file io_serial.c.

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation