/* * 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_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 */