| /* |
| * 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 _LINUX_SERIAL_H |
| #define _LINUX_SERIAL_H |
| |
| #include <linux/types.h> |
| |
| #ifdef __KERNEL__ |
| #include <asm/page.h> |
| |
| /* |
| * Counters of the input lines (CTS, DSR, RI, CD) interrupts |
| */ |
| |
| struct async_icount { |
| __u32 cts, dsr, rng, dcd, tx, rx; |
| __u32 frame, parity, overrun, brk; |
| __u32 buf_overrun; |
| }; |
| |
| /* |
| * The size of the serial xmit buffer is 1 page, or 4096 bytes |
| */ |
| #define SERIAL_XMIT_SIZE PAGE_SIZE |
| |
| #endif |
| |
| 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 /* usurped by cyclades.c */ |
| #define PORT_16650 6 |
| #define PORT_16650V2 7 |
| #define PORT_16750 8 |
| #define PORT_STARTECH 9 /* usurped by cyclades.c */ |
| #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 |
| |
| struct serial_uart_config { |
| char *name; |
| int dfl_xmit_fifo_size; |
| int flags; |
| }; |
| |
| #define UART_CLEAR_FIFO 0x01 |
| #define UART_USE_FIFO 0x02 |
| #define UART_STARTECH 0x04 |
| #define UART_NATSEMI 0x08 |
| |
| /* |
| * Definitions for async_struct (and serial_struct) flags field |
| * |
| * Define ASYNCB_* for convenient use with {test,set,clear}_bit. |
| */ |
| #define ASYNCB_HUP_NOTIFY 0 /* Notify getty on hangups and closes |
| * on the callout port */ |
| #define ASYNCB_FOURPORT 1 /* Set OU1, OUT2 per AST Fourport settings */ |
| #define ASYNCB_SAK 2 /* Secure Attention Key (Orange book) */ |
| #define ASYNCB_SPLIT_TERMIOS 3 /* Separate termios for dialin/callout */ |
| #define ASYNCB_SPD_HI 4 /* Use 56000 instead of 38400 bps */ |
| #define ASYNCB_SPD_VHI 5 /* Use 115200 instead of 38400 bps */ |
| #define ASYNCB_SKIP_TEST 6 /* Skip UART test during autoconfiguration */ |
| #define ASYNCB_AUTO_IRQ 7 /* Do automatic IRQ during |
| * autoconfiguration */ |
| #define ASYNCB_SESSION_LOCKOUT 8 /* Lock out cua opens based on session */ |
| #define ASYNCB_PGRP_LOCKOUT 9 /* Lock out cua opens based on pgrp */ |
| #define ASYNCB_CALLOUT_NOHUP 10 /* Don't do hangups for cua device */ |
| #define ASYNCB_HARDPPS_CD 11 /* Call hardpps when CD goes high */ |
| #define ASYNCB_SPD_SHI 12 /* Use 230400 instead of 38400 bps */ |
| #define ASYNCB_LOW_LATENCY 13 /* Request low latency behaviour */ |
| #define ASYNCB_BUGGY_UART 14 /* This is a buggy UART, skip some safety |
| * checks. Note: can be dangerous! */ |
| #define ASYNCB_AUTOPROBE 15 /* Port was autoprobed by PCI or PNP code */ |
| #define ASYNCB_LAST_USER 15 |
| |
| /* Internal flags used only by kernel */ |
| #define ASYNCB_INITIALIZED 31 /* Serial port was initialized */ |
| #define ASYNCB_SUSPENDED 30 /* Serial port is suspended */ |
| #define ASYNCB_NORMAL_ACTIVE 29 /* Normal device is active */ |
| #define ASYNCB_BOOT_AUTOCONF 28 /* Autoconfigure port on bootup */ |
| #define ASYNCB_CLOSING 27 /* Serial port is closing */ |
| #define ASYNCB_CTS_FLOW 26 /* Do CTS flow control */ |
| #define ASYNCB_CHECK_CD 25 /* i.e., CLOCAL */ |
| #define ASYNCB_SHARE_IRQ 24 /* for multifunction cards, no longer used */ |
| #define ASYNCB_CONS_FLOW 23 /* flow control for console */ |
| #define ASYNCB_BOOT_ONLYMCA 22 /* Probe only if MCA bus */ |
| #define ASYNCB_FIRST_KERNEL 22 |
| |
| #define ASYNC_HUP_NOTIFY (1U << ASYNCB_HUP_NOTIFY) |
| #define ASYNC_SUSPENDED (1U << ASYNCB_SUSPENDED) |
| #define ASYNC_FOURPORT (1U << ASYNCB_FOURPORT) |
| #define ASYNC_SAK (1U << ASYNCB_SAK) |
| #define ASYNC_SPLIT_TERMIOS (1U << ASYNCB_SPLIT_TERMIOS) |
| #define ASYNC_SPD_HI (1U << ASYNCB_SPD_HI) |
| #define ASYNC_SPD_VHI (1U << ASYNCB_SPD_VHI) |
| #define ASYNC_SKIP_TEST (1U << ASYNCB_SKIP_TEST) |
| #define ASYNC_AUTO_IRQ (1U << ASYNCB_AUTO_IRQ) |
| #define ASYNC_SESSION_LOCKOUT (1U << ASYNCB_SESSION_LOCKOUT) |
| #define ASYNC_PGRP_LOCKOUT (1U << ASYNCB_PGRP_LOCKOUT) |
| #define ASYNC_CALLOUT_NOHUP (1U << ASYNCB_CALLOUT_NOHUP) |
| #define ASYNC_HARDPPS_CD (1U << ASYNCB_HARDPPS_CD) |
| #define ASYNC_SPD_SHI (1U << ASYNCB_SPD_SHI) |
| #define ASYNC_LOW_LATENCY (1U << ASYNCB_LOW_LATENCY) |
| #define ASYNC_BUGGY_UART (1U << ASYNCB_BUGGY_UART) |
| #define ASYNC_AUTOPROBE (1U << ASYNCB_AUTOPROBE) |
| |
| #define ASYNC_FLAGS ((1U << (ASYNCB_LAST_USER + 1)) - 1) |
| #define ASYNC_USR_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI| \ |
| ASYNC_CALLOUT_NOHUP|ASYNC_SPD_SHI|ASYNC_LOW_LATENCY) |
| #define ASYNC_SPD_CUST (ASYNC_SPD_HI|ASYNC_SPD_VHI) |
| #define ASYNC_SPD_WARP (ASYNC_SPD_HI|ASYNC_SPD_SHI) |
| #define ASYNC_SPD_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI) |
| |
| #define ASYNC_INITIALIZED (1U << ASYNCB_INITIALIZED) |
| #define ASYNC_NORMAL_ACTIVE (1U << ASYNCB_NORMAL_ACTIVE) |
| #define ASYNC_BOOT_AUTOCONF (1U << ASYNCB_BOOT_AUTOCONF) |
| #define ASYNC_CLOSING (1U << ASYNCB_CLOSING) |
| #define ASYNC_CTS_FLOW (1U << ASYNCB_CTS_FLOW) |
| #define ASYNC_CHECK_CD (1U << ASYNCB_CHECK_CD) |
| #define ASYNC_SHARE_IRQ (1U << ASYNCB_SHARE_IRQ) |
| #define ASYNC_CONS_FLOW (1U << ASYNCB_CONS_FLOW) |
| #define ASYNC_BOOT_ONLYMCA (1U << ASYNCB_BOOT_ONLYMCA) |
| #define ASYNC_INTERNAL_FLAGS (~((1U << ASYNCB_FIRST_KERNEL) - 1)) |
| |
| /* |
| * 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]; |
| }; |
| |
| /* |
| * 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. |
| */ |
| |
| struct serial_rs485 { |
| __u32 flags; /* RS485 feature flags */ |
| #define SER_RS485_ENABLED (1 << 0) /* If enabled */ |
| #define SER_RS485_RTS_ON_SEND (1 << 1) /* Logical level for |
| RTS pin when |
| sending */ |
| #define SER_RS485_RTS_AFTER_SEND (1 << 2) /* Logical level for |
| RTS pin after sent*/ |
| #define SER_RS485_RX_DURING_TX (1 << 4) |
| __u32 delay_rts_before_send; /* Delay before send (milliseconds) */ |
| __u32 delay_rts_after_send; /* Delay after send (milliseconds) */ |
| __u32 padding[5]; /* Memory is cheap, new structs |
| are a royal PITA .. */ |
| }; |
| |
| #ifdef __KERNEL__ |
| #include <linux/compiler.h> |
| |
| #endif /* __KERNEL__ */ |
| #endif /* _LINUX_SERIAL_H */ |