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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 | /* 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/const.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. * * %SER_RS485_MODE_RS422 - Enable RS422. Requires %SER_RS485_ENABLED. */ struct serial_rs485 { __u32 flags; #define SER_RS485_ENABLED _BITUL(0) #define SER_RS485_RTS_ON_SEND _BITUL(1) #define SER_RS485_RTS_AFTER_SEND _BITUL(2) /* Placeholder for bit 3: SER_RS485_RTS_BEFORE_SEND, which isn't used anymore */ #define SER_RS485_RX_DURING_TX _BITUL(4) #define SER_RS485_TERMINATE_BUS _BITUL(5) #define SER_RS485_ADDRB _BITUL(6) #define SER_RS485_ADDR_RECV _BITUL(7) #define SER_RS485_ADDR_DEST _BITUL(8) #define SER_RS485_MODE_RS422 _BITUL(9) __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 */ |