Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Tim Schmielau | 4e57b68 | 2005-10-30 15:03:48 -0800 | [diff] [blame] | 13 | #include <linux/types.h> |
Andy Whitcroft | 60c20fb | 2009-01-02 13:49:04 +0000 | [diff] [blame] | 14 | |
| 15 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | #include <asm/page.h> |
| 17 | |
| 18 | /* |
| 19 | * Counters of the input lines (CTS, DSR, RI, CD) interrupts |
| 20 | */ |
| 21 | |
| 22 | struct async_icount { |
| 23 | __u32 cts, dsr, rng, dcd, tx, rx; |
| 24 | __u32 frame, parity, overrun, brk; |
| 25 | __u32 buf_overrun; |
| 26 | }; |
| 27 | |
| 28 | /* |
| 29 | * The size of the serial xmit buffer is 1 page, or 4096 bytes |
| 30 | */ |
| 31 | #define SERIAL_XMIT_SIZE PAGE_SIZE |
| 32 | |
| 33 | #endif |
| 34 | |
| 35 | struct serial_struct { |
| 36 | int type; |
| 37 | int line; |
| 38 | unsigned int port; |
| 39 | int irq; |
| 40 | int flags; |
| 41 | int xmit_fifo_size; |
| 42 | int custom_divisor; |
| 43 | int baud_base; |
| 44 | unsigned short close_delay; |
| 45 | char io_type; |
| 46 | char reserved_char[1]; |
| 47 | int hub6; |
| 48 | unsigned short closing_wait; /* time to wait before closing */ |
| 49 | unsigned short closing_wait2; /* no longer used... */ |
| 50 | unsigned char *iomem_base; |
| 51 | unsigned short iomem_reg_shift; |
| 52 | unsigned int port_high; |
| 53 | unsigned long iomap_base; /* cookie passed into ioremap */ |
| 54 | }; |
| 55 | |
| 56 | /* |
| 57 | * For the close wait times, 0 means wait forever for serial port to |
| 58 | * flush its output. 65535 means don't wait at all. |
| 59 | */ |
| 60 | #define ASYNC_CLOSING_WAIT_INF 0 |
| 61 | #define ASYNC_CLOSING_WAIT_NONE 65535 |
| 62 | |
| 63 | /* |
| 64 | * These are the supported serial types. |
| 65 | */ |
| 66 | #define PORT_UNKNOWN 0 |
| 67 | #define PORT_8250 1 |
| 68 | #define PORT_16450 2 |
| 69 | #define PORT_16550 3 |
| 70 | #define PORT_16550A 4 |
| 71 | #define PORT_CIRRUS 5 /* usurped by cyclades.c */ |
| 72 | #define PORT_16650 6 |
| 73 | #define PORT_16650V2 7 |
| 74 | #define PORT_16750 8 |
| 75 | #define PORT_STARTECH 9 /* usurped by cyclades.c */ |
| 76 | #define PORT_16C950 10 /* Oxford Semiconductor */ |
| 77 | #define PORT_16654 11 |
| 78 | #define PORT_16850 12 |
| 79 | #define PORT_RSA 13 /* RSA-DV II/S card */ |
Philippe Langlais | 71cad05 | 2010-08-31 14:19:09 +0200 | [diff] [blame] | 80 | #define PORT_MAX 13 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
| 82 | #define SERIAL_IO_PORT 0 |
| 83 | #define SERIAL_IO_HUB6 1 |
| 84 | #define SERIAL_IO_MEM 2 |
| 85 | |
| 86 | struct serial_uart_config { |
| 87 | char *name; |
| 88 | int dfl_xmit_fifo_size; |
| 89 | int flags; |
| 90 | }; |
| 91 | |
| 92 | #define UART_CLEAR_FIFO 0x01 |
| 93 | #define UART_USE_FIFO 0x02 |
| 94 | #define UART_STARTECH 0x04 |
| 95 | #define UART_NATSEMI 0x08 |
| 96 | |
| 97 | /* |
| 98 | * Definitions for async_struct (and serial_struct) flags field |
Jiri Slaby | 70beaed | 2009-06-11 12:39:12 +0100 | [diff] [blame] | 99 | * |
| 100 | * Define ASYNCB_* for convenient use with {test,set,clear}_bit. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | */ |
Jiri Slaby | 70beaed | 2009-06-11 12:39:12 +0100 | [diff] [blame] | 102 | #define ASYNCB_HUP_NOTIFY 0 /* Notify getty on hangups and closes |
| 103 | * on the callout port */ |
| 104 | #define ASYNCB_FOURPORT 1 /* Set OU1, OUT2 per AST Fourport settings */ |
| 105 | #define ASYNCB_SAK 2 /* Secure Attention Key (Orange book) */ |
| 106 | #define ASYNCB_SPLIT_TERMIOS 3 /* Separate termios for dialin/callout */ |
| 107 | #define ASYNCB_SPD_HI 4 /* Use 56000 instead of 38400 bps */ |
| 108 | #define ASYNCB_SPD_VHI 5 /* Use 115200 instead of 38400 bps */ |
| 109 | #define ASYNCB_SKIP_TEST 6 /* Skip UART test during autoconfiguration */ |
| 110 | #define ASYNCB_AUTO_IRQ 7 /* Do automatic IRQ during |
| 111 | * autoconfiguration */ |
| 112 | #define ASYNCB_SESSION_LOCKOUT 8 /* Lock out cua opens based on session */ |
| 113 | #define ASYNCB_PGRP_LOCKOUT 9 /* Lock out cua opens based on pgrp */ |
| 114 | #define ASYNCB_CALLOUT_NOHUP 10 /* Don't do hangups for cua device */ |
| 115 | #define ASYNCB_HARDPPS_CD 11 /* Call hardpps when CD goes high */ |
| 116 | #define ASYNCB_SPD_SHI 12 /* Use 230400 instead of 38400 bps */ |
| 117 | #define ASYNCB_LOW_LATENCY 13 /* Request low latency behaviour */ |
| 118 | #define ASYNCB_BUGGY_UART 14 /* This is a buggy UART, skip some safety |
| 119 | * checks. Note: can be dangerous! */ |
| 120 | #define ASYNCB_AUTOPROBE 15 /* Port was autoprobed by PCI or PNP code */ |
| 121 | #define ASYNCB_LAST_USER 15 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | |
Jiri Slaby | 70beaed | 2009-06-11 12:39:12 +0100 | [diff] [blame] | 123 | /* Internal flags used only by kernel */ |
| 124 | #define ASYNCB_INITIALIZED 31 /* Serial port was initialized */ |
Alan Cox | ccce6de | 2009-09-19 13:13:30 -0700 | [diff] [blame] | 125 | #define ASYNCB_SUSPENDED 30 /* Serial port is suspended */ |
Jiri Slaby | 70beaed | 2009-06-11 12:39:12 +0100 | [diff] [blame] | 126 | #define ASYNCB_NORMAL_ACTIVE 29 /* Normal device is active */ |
| 127 | #define ASYNCB_BOOT_AUTOCONF 28 /* Autoconfigure port on bootup */ |
| 128 | #define ASYNCB_CLOSING 27 /* Serial port is closing */ |
| 129 | #define ASYNCB_CTS_FLOW 26 /* Do CTS flow control */ |
| 130 | #define ASYNCB_CHECK_CD 25 /* i.e., CLOCAL */ |
| 131 | #define ASYNCB_SHARE_IRQ 24 /* for multifunction cards, no longer used */ |
| 132 | #define ASYNCB_CONS_FLOW 23 /* flow control for console */ |
| 133 | #define ASYNCB_BOOT_ONLYMCA 22 /* Probe only if MCA bus */ |
| 134 | #define ASYNCB_FIRST_KERNEL 22 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | |
Jiri Slaby | 70beaed | 2009-06-11 12:39:12 +0100 | [diff] [blame] | 136 | #define ASYNC_HUP_NOTIFY (1U << ASYNCB_HUP_NOTIFY) |
Alan Cox | ccce6de | 2009-09-19 13:13:30 -0700 | [diff] [blame] | 137 | #define ASYNC_SUSPENDED (1U << ASYNCB_SUSPENDED) |
Jiri Slaby | 70beaed | 2009-06-11 12:39:12 +0100 | [diff] [blame] | 138 | #define ASYNC_FOURPORT (1U << ASYNCB_FOURPORT) |
| 139 | #define ASYNC_SAK (1U << ASYNCB_SAK) |
| 140 | #define ASYNC_SPLIT_TERMIOS (1U << ASYNCB_SPLIT_TERMIOS) |
| 141 | #define ASYNC_SPD_HI (1U << ASYNCB_SPD_HI) |
| 142 | #define ASYNC_SPD_VHI (1U << ASYNCB_SPD_VHI) |
| 143 | #define ASYNC_SKIP_TEST (1U << ASYNCB_SKIP_TEST) |
| 144 | #define ASYNC_AUTO_IRQ (1U << ASYNCB_AUTO_IRQ) |
| 145 | #define ASYNC_SESSION_LOCKOUT (1U << ASYNCB_SESSION_LOCKOUT) |
| 146 | #define ASYNC_PGRP_LOCKOUT (1U << ASYNCB_PGRP_LOCKOUT) |
| 147 | #define ASYNC_CALLOUT_NOHUP (1U << ASYNCB_CALLOUT_NOHUP) |
| 148 | #define ASYNC_HARDPPS_CD (1U << ASYNCB_HARDPPS_CD) |
| 149 | #define ASYNC_SPD_SHI (1U << ASYNCB_SPD_SHI) |
| 150 | #define ASYNC_LOW_LATENCY (1U << ASYNCB_LOW_LATENCY) |
| 151 | #define ASYNC_BUGGY_UART (1U << ASYNCB_BUGGY_UART) |
| 152 | #define ASYNC_AUTOPROBE (1U << ASYNCB_AUTOPROBE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | |
John Villalovos | 93e3d58 | 2010-07-20 15:26:46 -0700 | [diff] [blame] | 154 | #define ASYNC_FLAGS ((1U << (ASYNCB_LAST_USER + 1)) - 1) |
Jiri Slaby | 70beaed | 2009-06-11 12:39:12 +0100 | [diff] [blame] | 155 | #define ASYNC_USR_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI| \ |
| 156 | ASYNC_CALLOUT_NOHUP|ASYNC_SPD_SHI|ASYNC_LOW_LATENCY) |
| 157 | #define ASYNC_SPD_CUST (ASYNC_SPD_HI|ASYNC_SPD_VHI) |
| 158 | #define ASYNC_SPD_WARP (ASYNC_SPD_HI|ASYNC_SPD_SHI) |
| 159 | #define ASYNC_SPD_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Jiri Slaby | 70beaed | 2009-06-11 12:39:12 +0100 | [diff] [blame] | 161 | #define ASYNC_INITIALIZED (1U << ASYNCB_INITIALIZED) |
| 162 | #define ASYNC_NORMAL_ACTIVE (1U << ASYNCB_NORMAL_ACTIVE) |
| 163 | #define ASYNC_BOOT_AUTOCONF (1U << ASYNCB_BOOT_AUTOCONF) |
| 164 | #define ASYNC_CLOSING (1U << ASYNCB_CLOSING) |
| 165 | #define ASYNC_CTS_FLOW (1U << ASYNCB_CTS_FLOW) |
| 166 | #define ASYNC_CHECK_CD (1U << ASYNCB_CHECK_CD) |
| 167 | #define ASYNC_SHARE_IRQ (1U << ASYNCB_SHARE_IRQ) |
| 168 | #define ASYNC_CONS_FLOW (1U << ASYNCB_CONS_FLOW) |
| 169 | #define ASYNC_BOOT_ONLYMCA (1U << ASYNCB_BOOT_ONLYMCA) |
| 170 | #define ASYNC_INTERNAL_FLAGS (~((1U << ASYNCB_FIRST_KERNEL) - 1)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | |
| 172 | /* |
| 173 | * Multiport serial configuration structure --- external structure |
| 174 | */ |
| 175 | struct serial_multiport_struct { |
| 176 | int irq; |
| 177 | int port1; |
| 178 | unsigned char mask1, match1; |
| 179 | int port2; |
| 180 | unsigned char mask2, match2; |
| 181 | int port3; |
| 182 | unsigned char mask3, match3; |
| 183 | int port4; |
| 184 | unsigned char mask4, match4; |
| 185 | int port_monitor; |
| 186 | int reserved[32]; |
| 187 | }; |
| 188 | |
| 189 | /* |
| 190 | * Serial input interrupt line counters -- external structure |
| 191 | * Four lines can interrupt: CTS, DSR, RI, DCD |
| 192 | */ |
| 193 | struct serial_icounter_struct { |
| 194 | int cts, dsr, rng, dcd; |
| 195 | int rx, tx; |
| 196 | int frame, overrun, parity, brk; |
| 197 | int buf_overrun; |
| 198 | int reserved[9]; |
| 199 | }; |
| 200 | |
Alan Cox | c26c56c | 2008-10-13 10:37:48 +0100 | [diff] [blame] | 201 | /* |
| 202 | * Serial interface for controlling RS485 settings on chips with suitable |
| 203 | * support. Set with TIOCSRS485 and get with TIOCGRS485 if supported by your |
| 204 | * platform. The set function returns the new state, with any unsupported bits |
| 205 | * reverted appropriately. |
| 206 | */ |
| 207 | |
| 208 | struct serial_rs485 { |
| 209 | __u32 flags; /* RS485 feature flags */ |
| 210 | #define SER_RS485_ENABLED (1 << 0) |
| 211 | #define SER_RS485_RTS_ON_SEND (1 << 1) |
| 212 | #define SER_RS485_RTS_AFTER_SEND (1 << 2) |
Claudio Scordino | 1b63318 | 2010-07-20 15:26:47 -0700 | [diff] [blame] | 213 | #define SER_RS485_RTS_BEFORE_SEND (1 << 3) |
Bernhard Roth | 83cac9f | 2011-08-24 09:48:23 +0200 | [diff] [blame^] | 214 | #define SER_RS485_RX_DURING_TX (1 << 4) |
Alan Cox | c26c56c | 2008-10-13 10:37:48 +0100 | [diff] [blame] | 215 | __u32 delay_rts_before_send; /* Milliseconds */ |
Claudio Scordino | 1b63318 | 2010-07-20 15:26:47 -0700 | [diff] [blame] | 216 | __u32 delay_rts_after_send; /* Milliseconds */ |
| 217 | __u32 padding[5]; /* Memory is cheap, new structs |
Alan Cox | c26c56c | 2008-10-13 10:37:48 +0100 | [diff] [blame] | 218 | are a royal PITA .. */ |
| 219 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
| 221 | #ifdef __KERNEL__ |
Russell King | 661f83a | 2005-07-16 09:30:53 +0100 | [diff] [blame] | 222 | #include <linux/compiler.h> |
| 223 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | #endif /* __KERNEL__ */ |
| 225 | #endif /* _LINUX_SERIAL_H */ |