1 /* 2 * include/linux/serial.h 3 * 4 * Copyright (C) 1992 by Theodore Ts'o. 5 * 6 * Redistribution of this file is permitted under the terms of the GNU 7 * Public License (GPL) 8 */ 9 10 #ifndef _UAPI_LINUX_SERIAL_H 11 #define _UAPI_LINUX_SERIAL_H 12 13 #include <linux/types.h> 14 15 #include <linux/tty_flags.h> 16 17 18 struct serial_struct { 19 int type; 20 int line; 21 unsigned int port; 22 int irq; 23 int flags; 24 int xmit_fifo_size; 25 int custom_divisor; 26 int baud_base; 27 unsigned short close_delay; 28 char io_type; 29 char reserved_char[1]; 30 int hub6; 31 unsigned short closing_wait; /* time to wait before closing */ 32 unsigned short closing_wait2; /* no longer used... */ 33 unsigned char *iomem_base; 34 unsigned short iomem_reg_shift; 35 unsigned int port_high; 36 unsigned long iomap_base; /* cookie passed into ioremap */ 37 }; 38 39 /* 40 * For the close wait times, 0 means wait forever for serial port to 41 * flush its output. 65535 means don't wait at all. 42 */ 43 #define ASYNC_CLOSING_WAIT_INF 0 44 #define ASYNC_CLOSING_WAIT_NONE 65535 45 46 /* 47 * These are the supported serial types. 48 */ 49 #define PORT_UNKNOWN 0 50 #define PORT_8250 1 51 #define PORT_16450 2 52 #define PORT_16550 3 53 #define PORT_16550A 4 54 #define PORT_CIRRUS 5 /* usurped by cyclades.c */ 55 #define PORT_16650 6 56 #define PORT_16650V2 7 57 #define PORT_16750 8 58 #define PORT_STARTECH 9 /* usurped by cyclades.c */ 59 #define PORT_16C950 10 /* Oxford Semiconductor */ 60 #define PORT_16654 11 61 #define PORT_16850 12 62 #define PORT_RSA 13 /* RSA-DV II/S card */ 63 #define PORT_MAX 13 64 65 #define SERIAL_IO_PORT 0 66 #define SERIAL_IO_HUB6 1 67 #define SERIAL_IO_MEM 2 68 #define SERIAL_IO_MEM32 3 69 #define SERIAL_IO_AU 4 70 #define SERIAL_IO_TSI 5 71 #define SERIAL_IO_MEM32BE 6 72 73 #define UART_CLEAR_FIFO 0x01 74 #define UART_USE_FIFO 0x02 75 #define UART_STARTECH 0x04 76 #define UART_NATSEMI 0x08 77 78 79 /* 80 * Multiport serial configuration structure --- external structure 81 */ 82 struct serial_multiport_struct { 83 int irq; 84 int port1; 85 unsigned char mask1, match1; 86 int port2; 87 unsigned char mask2, match2; 88 int port3; 89 unsigned char mask3, match3; 90 int port4; 91 unsigned char mask4, match4; 92 int port_monitor; 93 int reserved[32]; 94 }; 95 96 /* 97 * Serial input interrupt line counters -- external structure 98 * Four lines can interrupt: CTS, DSR, RI, DCD 99 */ 100 struct serial_icounter_struct { 101 int cts, dsr, rng, dcd; 102 int rx, tx; 103 int frame, overrun, parity, brk; 104 int buf_overrun; 105 int reserved[9]; 106 }; 107 108 /* 109 * Serial interface for controlling RS485 settings on chips with suitable 110 * support. Set with TIOCSRS485 and get with TIOCGRS485 if supported by your 111 * platform. The set function returns the new state, with any unsupported bits 112 * reverted appropriately. 113 */ 114 115 struct serial_rs485 { 116 __u32 flags; /* RS485 feature flags */ 117 #define SER_RS485_ENABLED (1 << 0) /* If enabled */ 118 #define SER_RS485_RTS_ON_SEND (1 << 1) /* Logical level for 119 RTS pin when 120 sending */ 121 #define SER_RS485_RTS_AFTER_SEND (1 << 2) /* Logical level for 122 RTS pin after sent*/ 123 #define SER_RS485_RX_DURING_TX (1 << 4) 124 __u32 delay_rts_before_send; /* Delay before send (milliseconds) */ 125 __u32 delay_rts_after_send; /* Delay after send (milliseconds) */ 126 __u32 padding[5]; /* Memory is cheap, new structs 127 are a royal PITA .. */ 128 }; 129 130 #endif /* _UAPI_LINUX_SERIAL_H */ 131
