mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
c26c56c0f4
JP Tosoni observed: "About a RS485 ioctl: could you consider the attached files which are already in the Linux kernel (in include/asm-cris). They define a TIOCSERSETRS485 (ioctl.h), and the data structure (rs485.h) with allows to specify timings. Sounds just like what we want ?" and he's right: sort of. Rework the structure to use flag bits and make the time delay a fixed sized field so we don't get 32/64bit problems. Add the ioctls to x86 so that people know what to add to their platform of choice. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
198 lines
5.6 KiB
C
198 lines
5.6 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
|
|
|
|
#ifdef __KERNEL__
|
|
#include <linux/types.h>
|
|
#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 ASYNC_HUP_NOTIFY 0x0001 /* Notify getty on hangups and closes
|
|
on the callout port */
|
|
#define ASYNC_FOURPORT 0x0002 /* Set OU1, OUT2 per AST Fourport settings */
|
|
#define ASYNC_SAK 0x0004 /* Secure Attention Key (Orange book) */
|
|
#define ASYNC_SPLIT_TERMIOS 0x0008 /* Separate termios for dialin/callout */
|
|
|
|
#define ASYNC_SPD_MASK 0x1030
|
|
#define ASYNC_SPD_HI 0x0010 /* Use 56000 instead of 38400 bps */
|
|
|
|
#define ASYNC_SPD_VHI 0x0020 /* Use 115200 instead of 38400 bps */
|
|
#define ASYNC_SPD_CUST 0x0030 /* Use user-specified divisor */
|
|
|
|
#define ASYNC_SKIP_TEST 0x0040 /* Skip UART test during autoconfiguration */
|
|
#define ASYNC_AUTO_IRQ 0x0080 /* Do automatic IRQ during autoconfiguration */
|
|
#define ASYNC_SESSION_LOCKOUT 0x0100 /* Lock out cua opens based on session */
|
|
#define ASYNC_PGRP_LOCKOUT 0x0200 /* Lock out cua opens based on pgrp */
|
|
#define ASYNC_CALLOUT_NOHUP 0x0400 /* Don't do hangups for cua device */
|
|
|
|
#define ASYNC_HARDPPS_CD 0x0800 /* Call hardpps when CD goes high */
|
|
|
|
#define ASYNC_SPD_SHI 0x1000 /* Use 230400 instead of 38400 bps */
|
|
#define ASYNC_SPD_WARP 0x1010 /* Use 460800 instead of 38400 bps */
|
|
|
|
#define ASYNC_LOW_LATENCY 0x2000 /* Request low latency behaviour */
|
|
|
|
#define ASYNC_BUGGY_UART 0x4000 /* This is a buggy UART, skip some safety
|
|
* checks. Note: can be dangerous! */
|
|
|
|
#define ASYNC_AUTOPROBE 0x8000 /* Port was autoprobed by PCI or PNP code */
|
|
|
|
#define ASYNC_FLAGS 0x7FFF /* Possible legal async flags */
|
|
#define ASYNC_USR_MASK 0x3430 /* Legal flags that non-privileged
|
|
* users can set or reset */
|
|
|
|
/* Internal flags used only by kernel/chr_drv/serial.c */
|
|
#define ASYNC_INITIALIZED 0x80000000 /* Serial port was initialized */
|
|
#define ASYNC_NORMAL_ACTIVE 0x20000000 /* Normal device is active */
|
|
#define ASYNC_BOOT_AUTOCONF 0x10000000 /* Autoconfigure port on bootup */
|
|
#define ASYNC_CLOSING 0x08000000 /* Serial port is closing */
|
|
#define ASYNC_CTS_FLOW 0x04000000 /* Do CTS flow control */
|
|
#define ASYNC_CHECK_CD 0x02000000 /* i.e., CLOCAL */
|
|
#define ASYNC_SHARE_IRQ 0x01000000 /* for multifunction cards
|
|
--- no longer used */
|
|
#define ASYNC_CONS_FLOW 0x00800000 /* flow control for console */
|
|
|
|
#define ASYNC_BOOT_ONLYMCA 0x00400000 /* Probe only if MCA bus */
|
|
#define ASYNC_INTERNAL_FLAGS 0xFFC00000 /* Internal flags */
|
|
|
|
/*
|
|
* 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 .. */
|
|
};
|
|
|
|
#ifdef __KERNEL__
|
|
#include <linux/compiler.h>
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _LINUX_SERIAL_H */
|