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 _LINUX_SERIAL_H 11 #define _LINUX_SERIAL_H 12 13 #include <linux/types.h> 14 15 16 struct serial_struct { 17 int type; 18 int line; 19 unsigned int port; 20 int irq; 21 int flags; 22 int xmit_fifo_size; 23 int custom_divisor; 24 int baud_base; 25 unsigned short close_delay; 26 char io_type; 27 char reserved_char[1]; 28 int hub6; 29 unsigned short closing_wait; /* time to wait before closing */ 30 unsigned short closing_wait2; /* no longer used... */ 31 unsigned char *iomem_base; 32 unsigned short iomem_reg_shift; 33 unsigned int port_high; 34 unsigned long iomap_base; /* cookie passed into ioremap */ 35 }; 36 37 /* 38 * For the close wait times, 0 means wait forever for serial port to 39 * flush its output. 65535 means don't wait at all. 40 */ 41 #define ASYNC_CLOSING_WAIT_INF 0 42 #define ASYNC_CLOSING_WAIT_NONE 65535 43 44 /* 45 * These are the supported serial types. 46 */ 47 #define PORT_UNKNOWN 0 48 #define PORT_8250 1 49 #define PORT_16450 2 50 #define PORT_16550 3 51 #define PORT_16550A 4 52 #define PORT_CIRRUS 5 /* usurped by cyclades.c */ 53 #define PORT_16650 6 54 #define PORT_16650V2 7 55 #define PORT_16750 8 56 #define PORT_STARTECH 9 /* usurped by cyclades.c */ 57 #define PORT_16C950 10 /* Oxford Semiconductor */ 58 #define PORT_16654 11 59 #define PORT_16850 12 60 #define PORT_RSA 13 /* RSA-DV II/S card */ 61 #define PORT_MAX 13 62 63 #define SERIAL_IO_PORT 0 64 #define SERIAL_IO_HUB6 1 65 #define SERIAL_IO_MEM 2 66 67 struct serial_uart_config { 68 char *name; 69 int dfl_xmit_fifo_size; 70 int flags; 71 }; 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 * Definitions for async_struct (and serial_struct) flags field 80 * 81 * Define ASYNCB_* for convenient use with {test,set,clear}_bit. 82 */ 83 #define ASYNCB_HUP_NOTIFY 0 /* Notify getty on hangups and closes 84 * on the callout port */ 85 #define ASYNCB_FOURPORT 1 /* Set OU1, OUT2 per AST Fourport settings */ 86 #define ASYNCB_SAK 2 /* Secure Attention Key (Orange book) */ 87 #define ASYNCB_SPLIT_TERMIOS 3 /* Separate termios for dialin/callout */ 88 #define ASYNCB_SPD_HI 4 /* Use 56000 instead of 38400 bps */ 89 #define ASYNCB_SPD_VHI 5 /* Use 115200 instead of 38400 bps */ 90 #define ASYNCB_SKIP_TEST 6 /* Skip UART test during autoconfiguration */ 91 #define ASYNCB_AUTO_IRQ 7 /* Do automatic IRQ during 92 * autoconfiguration */ 93 #define ASYNCB_SESSION_LOCKOUT 8 /* Lock out cua opens based on session */ 94 #define ASYNCB_PGRP_LOCKOUT 9 /* Lock out cua opens based on pgrp */ 95 #define ASYNCB_CALLOUT_NOHUP 10 /* Don't do hangups for cua device */ 96 #define ASYNCB_HARDPPS_CD 11 /* Call hardpps when CD goes high */ 97 #define ASYNCB_SPD_SHI 12 /* Use 230400 instead of 38400 bps */ 98 #define ASYNCB_LOW_LATENCY 13 /* Request low latency behaviour */ 99 #define ASYNCB_BUGGY_UART 14 /* This is a buggy UART, skip some safety 100 * checks. Note: can be dangerous! */ 101 #define ASYNCB_AUTOPROBE 15 /* Port was autoprobed by PCI or PNP code */ 102 #define ASYNCB_LAST_USER 15 103 104 /* Internal flags used only by kernel */ 105 #define ASYNCB_INITIALIZED 31 /* Serial port was initialized */ 106 #define ASYNCB_SUSPENDED 30 /* Serial port is suspended */ 107 #define ASYNCB_NORMAL_ACTIVE 29 /* Normal device is active */ 108 #define ASYNCB_BOOT_AUTOCONF 28 /* Autoconfigure port on bootup */ 109 #define ASYNCB_CLOSING 27 /* Serial port is closing */ 110 #define ASYNCB_CTS_FLOW 26 /* Do CTS flow control */ 111 #define ASYNCB_CHECK_CD 25 /* i.e., CLOCAL */ 112 #define ASYNCB_SHARE_IRQ 24 /* for multifunction cards, no longer used */ 113 #define ASYNCB_CONS_FLOW 23 /* flow control for console */ 114 #define ASYNCB_BOOT_ONLYMCA 22 /* Probe only if MCA bus */ 115 #define ASYNCB_FIRST_KERNEL 22 116 117 #define ASYNC_HUP_NOTIFY (1U << ASYNCB_HUP_NOTIFY) 118 #define ASYNC_SUSPENDED (1U << ASYNCB_SUSPENDED) 119 #define ASYNC_FOURPORT (1U << ASYNCB_FOURPORT) 120 #define ASYNC_SAK (1U << ASYNCB_SAK) 121 #define ASYNC_SPLIT_TERMIOS (1U << ASYNCB_SPLIT_TERMIOS) 122 #define ASYNC_SPD_HI (1U << ASYNCB_SPD_HI) 123 #define ASYNC_SPD_VHI (1U << ASYNCB_SPD_VHI) 124 #define ASYNC_SKIP_TEST (1U << ASYNCB_SKIP_TEST) 125 #define ASYNC_AUTO_IRQ (1U << ASYNCB_AUTO_IRQ) 126 #define ASYNC_SESSION_LOCKOUT (1U << ASYNCB_SESSION_LOCKOUT) 127 #define ASYNC_PGRP_LOCKOUT (1U << ASYNCB_PGRP_LOCKOUT) 128 #define ASYNC_CALLOUT_NOHUP (1U << ASYNCB_CALLOUT_NOHUP) 129 #define ASYNC_HARDPPS_CD (1U << ASYNCB_HARDPPS_CD) 130 #define ASYNC_SPD_SHI (1U << ASYNCB_SPD_SHI) 131 #define ASYNC_LOW_LATENCY (1U << ASYNCB_LOW_LATENCY) 132 #define ASYNC_BUGGY_UART (1U << ASYNCB_BUGGY_UART) 133 #define ASYNC_AUTOPROBE (1U << ASYNCB_AUTOPROBE) 134 135 #define ASYNC_FLAGS ((1U << (ASYNCB_LAST_USER + 1)) - 1) 136 #define ASYNC_USR_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI| \ 137 ASYNC_CALLOUT_NOHUP|ASYNC_SPD_SHI|ASYNC_LOW_LATENCY) 138 #define ASYNC_SPD_CUST (ASYNC_SPD_HI|ASYNC_SPD_VHI) 139 #define ASYNC_SPD_WARP (ASYNC_SPD_HI|ASYNC_SPD_SHI) 140 #define ASYNC_SPD_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI) 141 142 #define ASYNC_INITIALIZED (1U << ASYNCB_INITIALIZED) 143 #define ASYNC_NORMAL_ACTIVE (1U << ASYNCB_NORMAL_ACTIVE) 144 #define ASYNC_BOOT_AUTOCONF (1U << ASYNCB_BOOT_AUTOCONF) 145 #define ASYNC_CLOSING (1U << ASYNCB_CLOSING) 146 #define ASYNC_CTS_FLOW (1U << ASYNCB_CTS_FLOW) 147 #define ASYNC_CHECK_CD (1U << ASYNCB_CHECK_CD) 148 #define ASYNC_SHARE_IRQ (1U << ASYNCB_SHARE_IRQ) 149 #define ASYNC_CONS_FLOW (1U << ASYNCB_CONS_FLOW) 150 #define ASYNC_BOOT_ONLYMCA (1U << ASYNCB_BOOT_ONLYMCA) 151 #define ASYNC_INTERNAL_FLAGS (~((1U << ASYNCB_FIRST_KERNEL) - 1)) 152 153 /* 154 * Multiport serial configuration structure --- external structure 155 */ 156 struct serial_multiport_struct { 157 int irq; 158 int port1; 159 unsigned char mask1, match1; 160 int port2; 161 unsigned char mask2, match2; 162 int port3; 163 unsigned char mask3, match3; 164 int port4; 165 unsigned char mask4, match4; 166 int port_monitor; 167 int reserved[32]; 168 }; 169 170 /* 171 * Serial input interrupt line counters -- external structure 172 * Four lines can interrupt: CTS, DSR, RI, DCD 173 */ 174 struct serial_icounter_struct { 175 int cts, dsr, rng, dcd; 176 int rx, tx; 177 int frame, overrun, parity, brk; 178 int buf_overrun; 179 int reserved[9]; 180 }; 181 182 /* 183 * Serial interface for controlling RS485 settings on chips with suitable 184 * support. Set with TIOCSRS485 and get with TIOCGRS485 if supported by your 185 * platform. The set function returns the new state, with any unsupported bits 186 * reverted appropriately. 187 */ 188 189 struct serial_rs485 { 190 __u32 flags; /* RS485 feature flags */ 191 #define SER_RS485_ENABLED (1 << 0) /* If enabled */ 192 #define SER_RS485_RTS_ON_SEND (1 << 1) /* Logical level for 193 RTS pin when 194 sending */ 195 #define SER_RS485_RTS_AFTER_SEND (1 << 2) /* Logical level for 196 RTS pin after sent*/ 197 #define SER_RS485_RX_DURING_TX (1 << 4) 198 __u32 delay_rts_before_send; /* Delay before send (milliseconds) */ 199 __u32 delay_rts_after_send; /* Delay after send (milliseconds) */ 200 __u32 padding[5]; /* Memory is cheap, new structs 201 are a royal PITA .. */ 202 }; 203 204 #endif /* _LINUX_SERIAL_H */ 205
