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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>
-
-
- 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_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_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)
- #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)
- __u32 delay_rts_before_send; /* Milliseconds */
- __u32 padding[6]; /* Memory is cheap, new structs
- are a royal PITA .. */
- };
-
- #endif /* _LINUX_SERIAL_H */
-