226 строки
7.0 KiB
C
226 строки
7.0 KiB
C
/*
|
|
* include/linux/serial.h
|
|
*
|
|
* Copyright (C) 1992 by Theodore Ts'o.
|
|
*
|
|
* Redistribution of this file is permitted under the terms of the GNU
|
|
* Public License (GPL)
|
|
*/
|
|
|
|
#ifndef _LINUX_SERIAL_H
|
|
#define _LINUX_SERIAL_H
|
|
|
|
#include <linux/types.h>
|
|
|
|
#ifdef __KERNEL__
|
|
#include <asm/page.h>
|
|
|
|
/*
|
|
* Counters of the input lines (CTS, DSR, RI, CD) interrupts
|
|
*/
|
|
|
|
struct async_icount {
|
|
__u32 cts, dsr, rng, dcd, tx, rx;
|
|
__u32 frame, parity, overrun, brk;
|
|
__u32 buf_overrun;
|
|
};
|
|
|
|
/*
|
|
* The size of the serial xmit buffer is 1 page, or 4096 bytes
|
|
*/
|
|
#define SERIAL_XMIT_SIZE PAGE_SIZE
|
|
|
|
#endif
|
|
|
|
struct serial_struct {
|
|
int type;
|
|
int line;
|
|
unsigned int port;
|
|
int irq;
|
|
int flags;
|
|
int xmit_fifo_size;
|
|
int custom_divisor;
|
|
int baud_base;
|
|
unsigned short close_delay;
|
|
char io_type;
|
|
char reserved_char[1];
|
|
int hub6;
|
|
unsigned short closing_wait; /* time to wait before closing */
|
|
unsigned short closing_wait2; /* no longer used... */
|
|
unsigned char *iomem_base;
|
|
unsigned short iomem_reg_shift;
|
|
unsigned int port_high;
|
|
unsigned long iomap_base; /* cookie passed into ioremap */
|
|
};
|
|
|
|
/*
|
|
* For the close wait times, 0 means wait forever for serial port to
|
|
* flush its output. 65535 means don't wait at all.
|
|
*/
|
|
#define ASYNC_CLOSING_WAIT_INF 0
|
|
#define ASYNC_CLOSING_WAIT_NONE 65535
|
|
|
|
/*
|
|
* These are the supported serial types.
|
|
*/
|
|
#define PORT_UNKNOWN 0
|
|
#define PORT_8250 1
|
|
#define PORT_16450 2
|
|
#define PORT_16550 3
|
|
#define PORT_16550A 4
|
|
#define PORT_CIRRUS 5 /* usurped by cyclades.c */
|
|
#define PORT_16650 6
|
|
#define PORT_16650V2 7
|
|
#define PORT_16750 8
|
|
#define PORT_STARTECH 9 /* usurped by cyclades.c */
|
|
#define PORT_16C950 10 /* Oxford Semiconductor */
|
|
#define PORT_16654 11
|
|
#define PORT_16850 12
|
|
#define PORT_RSA 13 /* RSA-DV II/S card */
|
|
#define PORT_MAX 13
|
|
|
|
#define SERIAL_IO_PORT 0
|
|
#define SERIAL_IO_HUB6 1
|
|
#define SERIAL_IO_MEM 2
|
|
|
|
struct serial_uart_config {
|
|
char *name;
|
|
int dfl_xmit_fifo_size;
|
|
int flags;
|
|
};
|
|
|
|
#define UART_CLEAR_FIFO 0x01
|
|
#define UART_USE_FIFO 0x02
|
|
#define UART_STARTECH 0x04
|
|
#define UART_NATSEMI 0x08
|
|
|
|
/*
|
|
* Definitions for async_struct (and serial_struct) flags field
|
|
*
|
|
* Define ASYNCB_* for convenient use with {test,set,clear}_bit.
|
|
*/
|
|
#define ASYNCB_HUP_NOTIFY 0 /* Notify getty on hangups and closes
|
|
* on the callout port */
|
|
#define ASYNCB_FOURPORT 1 /* Set OU1, OUT2 per AST Fourport settings */
|
|
#define ASYNCB_SAK 2 /* Secure Attention Key (Orange book) */
|
|
#define ASYNCB_SPLIT_TERMIOS 3 /* Separate termios for dialin/callout */
|
|
#define ASYNCB_SPD_HI 4 /* Use 56000 instead of 38400 bps */
|
|
#define ASYNCB_SPD_VHI 5 /* Use 115200 instead of 38400 bps */
|
|
#define ASYNCB_SKIP_TEST 6 /* Skip UART test during autoconfiguration */
|
|
#define ASYNCB_AUTO_IRQ 7 /* Do automatic IRQ during
|
|
* autoconfiguration */
|
|
#define ASYNCB_SESSION_LOCKOUT 8 /* Lock out cua opens based on session */
|
|
#define ASYNCB_PGRP_LOCKOUT 9 /* Lock out cua opens based on pgrp */
|
|
#define ASYNCB_CALLOUT_NOHUP 10 /* Don't do hangups for cua device */
|
|
#define ASYNCB_HARDPPS_CD 11 /* Call hardpps when CD goes high */
|
|
#define ASYNCB_SPD_SHI 12 /* Use 230400 instead of 38400 bps */
|
|
#define ASYNCB_LOW_LATENCY 13 /* Request low latency behaviour */
|
|
#define ASYNCB_BUGGY_UART 14 /* This is a buggy UART, skip some safety
|
|
* checks. Note: can be dangerous! */
|
|
#define ASYNCB_AUTOPROBE 15 /* Port was autoprobed by PCI or PNP code */
|
|
#define ASYNCB_LAST_USER 15
|
|
|
|
/* Internal flags used only by kernel */
|
|
#define ASYNCB_INITIALIZED 31 /* Serial port was initialized */
|
|
#define ASYNCB_SUSPENDED 30 /* Serial port is suspended */
|
|
#define ASYNCB_NORMAL_ACTIVE 29 /* Normal device is active */
|
|
#define ASYNCB_BOOT_AUTOCONF 28 /* Autoconfigure port on bootup */
|
|
#define ASYNCB_CLOSING 27 /* Serial port is closing */
|
|
#define ASYNCB_CTS_FLOW 26 /* Do CTS flow control */
|
|
#define ASYNCB_CHECK_CD 25 /* i.e., CLOCAL */
|
|
#define ASYNCB_SHARE_IRQ 24 /* for multifunction cards, no longer used */
|
|
#define ASYNCB_CONS_FLOW 23 /* flow control for console */
|
|
#define ASYNCB_FIRST_KERNEL 22
|
|
|
|
#define ASYNC_HUP_NOTIFY (1U << ASYNCB_HUP_NOTIFY)
|
|
#define ASYNC_SUSPENDED (1U << ASYNCB_SUSPENDED)
|
|
#define ASYNC_FOURPORT (1U << ASYNCB_FOURPORT)
|
|
#define ASYNC_SAK (1U << ASYNCB_SAK)
|
|
#define ASYNC_SPLIT_TERMIOS (1U << ASYNCB_SPLIT_TERMIOS)
|
|
#define ASYNC_SPD_HI (1U << ASYNCB_SPD_HI)
|
|
#define ASYNC_SPD_VHI (1U << ASYNCB_SPD_VHI)
|
|
#define ASYNC_SKIP_TEST (1U << ASYNCB_SKIP_TEST)
|
|
#define ASYNC_AUTO_IRQ (1U << ASYNCB_AUTO_IRQ)
|
|
#define ASYNC_SESSION_LOCKOUT (1U << ASYNCB_SESSION_LOCKOUT)
|
|
#define ASYNC_PGRP_LOCKOUT (1U << ASYNCB_PGRP_LOCKOUT)
|
|
#define ASYNC_CALLOUT_NOHUP (1U << ASYNCB_CALLOUT_NOHUP)
|
|
#define ASYNC_HARDPPS_CD (1U << ASYNCB_HARDPPS_CD)
|
|
#define ASYNC_SPD_SHI (1U << ASYNCB_SPD_SHI)
|
|
#define ASYNC_LOW_LATENCY (1U << ASYNCB_LOW_LATENCY)
|
|
#define ASYNC_BUGGY_UART (1U << ASYNCB_BUGGY_UART)
|
|
#define ASYNC_AUTOPROBE (1U << ASYNCB_AUTOPROBE)
|
|
|
|
#define ASYNC_FLAGS ((1U << (ASYNCB_LAST_USER + 1)) - 1)
|
|
#define ASYNC_USR_MASK (ASYNC_SPD_MASK|ASYNC_CALLOUT_NOHUP| \
|
|
ASYNC_LOW_LATENCY)
|
|
#define ASYNC_SPD_CUST (ASYNC_SPD_HI|ASYNC_SPD_VHI)
|
|
#define ASYNC_SPD_WARP (ASYNC_SPD_HI|ASYNC_SPD_SHI)
|
|
#define ASYNC_SPD_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI)
|
|
|
|
#define ASYNC_INITIALIZED (1U << ASYNCB_INITIALIZED)
|
|
#define ASYNC_NORMAL_ACTIVE (1U << ASYNCB_NORMAL_ACTIVE)
|
|
#define ASYNC_BOOT_AUTOCONF (1U << ASYNCB_BOOT_AUTOCONF)
|
|
#define ASYNC_CLOSING (1U << ASYNCB_CLOSING)
|
|
#define ASYNC_CTS_FLOW (1U << ASYNCB_CTS_FLOW)
|
|
#define ASYNC_CHECK_CD (1U << ASYNCB_CHECK_CD)
|
|
#define ASYNC_SHARE_IRQ (1U << ASYNCB_SHARE_IRQ)
|
|
#define ASYNC_CONS_FLOW (1U << ASYNCB_CONS_FLOW)
|
|
#define ASYNC_INTERNAL_FLAGS (~((1U << ASYNCB_FIRST_KERNEL) - 1))
|
|
|
|
/*
|
|
* Multiport serial configuration structure --- external structure
|
|
*/
|
|
struct serial_multiport_struct {
|
|
int irq;
|
|
int port1;
|
|
unsigned char mask1, match1;
|
|
int port2;
|
|
unsigned char mask2, match2;
|
|
int port3;
|
|
unsigned char mask3, match3;
|
|
int port4;
|
|
unsigned char mask4, match4;
|
|
int port_monitor;
|
|
int reserved[32];
|
|
};
|
|
|
|
/*
|
|
* Serial input interrupt line counters -- external structure
|
|
* Four lines can interrupt: CTS, DSR, RI, DCD
|
|
*/
|
|
struct serial_icounter_struct {
|
|
int cts, dsr, rng, dcd;
|
|
int rx, tx;
|
|
int frame, overrun, parity, brk;
|
|
int buf_overrun;
|
|
int reserved[9];
|
|
};
|
|
|
|
/*
|
|
* Serial interface for controlling RS485 settings on chips with suitable
|
|
* support. Set with TIOCSRS485 and get with TIOCGRS485 if supported by your
|
|
* platform. The set function returns the new state, with any unsupported bits
|
|
* reverted appropriately.
|
|
*/
|
|
|
|
struct serial_rs485 {
|
|
__u32 flags; /* RS485 feature flags */
|
|
#define SER_RS485_ENABLED (1 << 0) /* If enabled */
|
|
#define SER_RS485_RTS_ON_SEND (1 << 1) /* Logical level for
|
|
RTS pin when
|
|
sending */
|
|
#define SER_RS485_RTS_AFTER_SEND (1 << 2) /* Logical level for
|
|
RTS pin after sent*/
|
|
#define SER_RS485_RX_DURING_TX (1 << 4)
|
|
__u32 delay_rts_before_send; /* Delay before send (milliseconds) */
|
|
__u32 delay_rts_after_send; /* Delay after send (milliseconds) */
|
|
__u32 padding[5]; /* Memory is cheap, new structs
|
|
are a royal PITA .. */
|
|
};
|
|
|
|
#ifdef __KERNEL__
|
|
#include <linux/compiler.h>
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _LINUX_SERIAL_H */
|