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/*
* 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_U6_16550A 14
#define PORT_MAX 14
#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_BOOT_ONLYMCA 22 /* Probe only if MCA bus */
#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_HI|ASYNC_SPD_VHI| \
ASYNC_CALLOUT_NOHUP|ASYNC_SPD_SHI|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_BOOT_ONLYMCA (1U << ASYNCB_BOOT_ONLYMCA)
#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)
#define SER_RS485_RTS_ON_SEND (1 << 1)
#define SER_RS485_RTS_AFTER_SEND (1 << 2)
#define SER_RS485_RTS_BEFORE_SEND (1 << 3)
__u32 delay_rts_before_send; /* Milliseconds */
__u32 delay_rts_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 */
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