LXR linux/include/uapi/linux/serial.h

   1/*
   2 * include/linux/serial.h
   3 *
   4 * Copyright (C) 1992 by Theodore Ts'o.
   5 * 
   6 * Redistribution of this file is permitted under the terms of the GNU 
   7 * Public License (GPL)
   8 */
   9
  10#ifndef _UAPI_LINUX_SERIAL_H
  11#define _UAPI_LINUX_SERIAL_H
  12
  13#include <linux/types.h>
  14
  15#include <linux/tty_flags.h>
  16
  17
  18struct serial_struct {
  19        int     type;
  20        int     line;
  21        unsigned int    port;
  22        int     irq;
  23        int     flags;
  24        int     xmit_fifo_size;
  25        int     custom_divisor;
  26        int     baud_base;
  27        unsigned short  close_delay;
  28        char    io_type;
  29        char    reserved_char[1];
  30        int     hub6;
  31        unsigned short  closing_wait; /* time to wait before closing */
  32        unsigned short  closing_wait2; /* no longer used... */
  33        unsigned char   *iomem_base;
  34        unsigned short  iomem_reg_shift;
  35        unsigned int    port_high;
  36        unsigned long   iomap_base;     /* cookie passed into ioremap */
  37};
  38
  39/*
  40 * For the close wait times, 0 means wait forever for serial port to
  41 * flush its output.  65535 means don't wait at all.
  42 */
  43#define ASYNC_CLOSING_WAIT_INF  0
  44#define ASYNC_CLOSING_WAIT_NONE 65535
  45
  46/*
  47 * These are the supported serial types.
  48 */
  49#define PORT_UNKNOWN    0
  50#define PORT_8250       1
  51#define PORT_16450      2
  52#define PORT_16550      3
  53#define PORT_16550A     4
  54#define PORT_CIRRUS     5       /* usurped by cyclades.c */
  55#define PORT_16650      6
  56#define PORT_16650V2    7
  57#define PORT_16750      8
  58#define PORT_STARTECH   9       /* usurped by cyclades.c */
  59#define PORT_16C950     10      /* Oxford Semiconductor */
  60#define PORT_16654      11
  61#define PORT_16850      12
  62#define PORT_RSA        13      /* RSA-DV II/S card */
  63#define PORT_MAX        13
  64
  65#define SERIAL_IO_PORT  0
  66#define SERIAL_IO_HUB6  1
  67#define SERIAL_IO_MEM   2
  68
  69#define UART_CLEAR_FIFO         0x01
  70#define UART_USE_FIFO           0x02
  71#define UART_STARTECH           0x04
  72#define UART_NATSEMI            0x08
  73
  74
  75/*
  76 * Multiport serial configuration structure --- external structure
  77 */
  78struct serial_multiport_struct {
  79        int             irq;
  80        int             port1;
  81        unsigned char   mask1, match1;
  82        int             port2;
  83        unsigned char   mask2, match2;
  84        int             port3;
  85        unsigned char   mask3, match3;
  86        int             port4;
  87        unsigned char   mask4, match4;
  88        int             port_monitor;
  89        int     reserved[32];
  90};
  91
  92/*
  93 * Serial input interrupt line counters -- external structure
  94 * Four lines can interrupt: CTS, DSR, RI, DCD
  95 */
  96struct serial_icounter_struct {
  97        int cts, dsr, rng, dcd;
  98        int rx, tx;
  99        int frame, overrun, parity, brk;
 100        int buf_overrun;
 101        int reserved[9];
 102};
 103
 104/*
 105 * Serial interface for controlling RS485 settings on chips with suitable
 106 * support. Set with TIOCSRS485 and get with TIOCGRS485 if supported by your
 107 * platform. The set function returns the new state, with any unsupported bits
 108 * reverted appropriately.
 109 */
 110
 111struct serial_rs485 {
 112        __u32   flags;                  /* RS485 feature flags */
 113#define SER_RS485_ENABLED               (1 << 0)        /* If enabled */
 114#define SER_RS485_RTS_ON_SEND           (1 << 1)        /* Logical level for
 115                                                           RTS pin when
 116                                                           sending */
 117#define SER_RS485_RTS_AFTER_SEND        (1 << 2)        /* Logical level for
 118                                                           RTS pin after sent*/
 119#define SER_RS485_RX_DURING_TX          (1 << 4)
 120        __u32   delay_rts_before_send;  /* Delay before send (milliseconds) */
 121        __u32   delay_rts_after_send;   /* Delay after send (milliseconds) */
 122        __u32   padding[5];             /* Memory is cheap, new structs
 123                                           are a royal PITA .. */
 124};
 125
 126#endif /* _UAPI_LINUX_SERIAL_H */
 127