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Diffstat (limited to 'include/uapi/linux/serial.h')
| -rw-r--r-- | include/uapi/linux/serial.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/include/uapi/linux/serial.h b/include/uapi/linux/serial.h new file mode 100644 index 000000000..53bc1af67 --- /dev/null +++ b/include/uapi/linux/serial.h @@ -0,0 +1,185 @@ +/* SPDX-License-Identifier: GPL-1.0+ WITH Linux-syscall-note */ +/* + * 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 _UAPI_LINUX_SERIAL_H +#define _UAPI_LINUX_SERIAL_H + +#include <linux/types.h> + +#include <linux/tty_flags.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 +#define PORT_16650 6 +#define PORT_16650V2 7 +#define PORT_16750 8 +#define PORT_STARTECH 9 +#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 +#define SERIAL_IO_MEM32 3 +#define SERIAL_IO_AU 4 +#define SERIAL_IO_TSI 5 +#define SERIAL_IO_MEM32BE 6 +#define SERIAL_IO_MEM16 7 + +#define UART_CLEAR_FIFO 0x01 +#define UART_USE_FIFO 0x02 +#define UART_STARTECH 0x04 +#define UART_NATSEMI 0x08 + + +/* + * 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]; +}; + +/** + * struct serial_rs485 - serial interface for controlling RS485 settings. + * @flags: RS485 feature flags. + * @delay_rts_before_send: Delay before send (milliseconds). + * @delay_rts_after_send: Delay after send (milliseconds). + * @addr_recv: Receive filter for RS485 addressing mode + * (used only when %SER_RS485_ADDR_RECV is set). + * @addr_dest: Destination address for RS485 addressing mode + * (used only when %SER_RS485_ADDR_DEST is set). + * @padding0: Padding (set to zero). + * @padding1: Padding (set to zero). + * @padding: Deprecated, use @padding0 and @padding1 instead. + * Do not use with @addr_recv and @addr_dest (due to + * overlap). + * + * 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. + * + * The flag bits are: + * + * * %SER_RS485_ENABLED - RS485 enabled. + * * %SER_RS485_RTS_ON_SEND - Logical level for RTS pin when sending. + * * %SER_RS485_RTS_AFTER_SEND - Logical level for RTS pin after sent. + * * %SER_RS485_RX_DURING_TX - Full-duplex RS485 line. + * * %SER_RS485_TERMINATE_BUS - Enable bus termination (if supported). + * * %SER_RS485_ADDRB - Enable RS485 addressing mode. + * * %SER_RS485_ADDR_RECV - Receive address filter (enables @addr_recv). Requires %SER_RS485_ADDRB. + * * %SER_RS485_ADDR_DEST - Destination address (enables @addr_dest). Requires %SER_RS485_ADDRB. + */ +struct serial_rs485 { + __u32 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_RX_DURING_TX (1 << 4) +#define SER_RS485_TERMINATE_BUS (1 << 5) +#define SER_RS485_ADDRB (1 << 6) +#define SER_RS485_ADDR_RECV (1 << 7) +#define SER_RS485_ADDR_DEST (1 << 8) + + __u32 delay_rts_before_send; + __u32 delay_rts_after_send; + + /* The fields below are defined by flags */ + union { + __u32 padding[5]; /* Memory is cheap, new structs are a pain */ + + struct { + __u8 addr_recv; + __u8 addr_dest; + __u8 padding0[2]; + __u32 padding1[4]; + }; + }; +}; + +/* + * Serial interface for controlling ISO7816 settings on chips with suitable + * support. Set with TIOCSISO7816 and get with TIOCGISO7816 if supported by + * your platform. + */ +struct serial_iso7816 { + __u32 flags; /* ISO7816 feature flags */ +#define SER_ISO7816_ENABLED (1 << 0) +#define SER_ISO7816_T_PARAM (0x0f << 4) +#define SER_ISO7816_T(t) (((t) & 0x0f) << 4) + __u32 tg; + __u32 sc_fi; + __u32 sc_di; + __u32 clk; + __u32 reserved[5]; +}; + +#endif /* _UAPI_LINUX_SERIAL_H */ |