/* * Copyright (c) 1992, 1993, 1996 * Berkeley Software Design, Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Berkeley Software * Design, Inc. * * THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * BSDI com.h,v 2.2 1996/04/08 19:32:21 bostic Exp * * $Id: com.h,v 1.3 1996/09/22 15:42:48 miff Exp $ */ /* com.h for doscmd int14.c */ #define BUFSIZE 1024 /* NS16550A register definitions */ /* interrupt enable register */ #define IE_NOP 0xF0 /* not used */ #define IE_MODEM_STAT 0x08 /* modem status int. */ #define IE_LINE_STAT 0x04 /* receiver-line status int. */ #define IE_TRANS_HLD 0x02 /* transmitter holding register empty int. */ #define IE_RCV_DATA 0x01 /* received data available int. */ /* interrupt identification register */ #define II_FIFOS_EN 0xC0 /* if FIFOs are enabled */ #define II_NOP 0x38 /* not used */ #define II_INT_ID 0x06 /* mask: bits see below */ #define II_PEND_INT 0x01 /* 1=no interrupt pending */ /* bit masks for II_INT_ID */ #define II_LINE_STAT 0x06 #define II_RCV_DATA 0x04 #define II_TRANS_HLD 0x02 #define II_MODEM_STAT 0x00 /* FIFO control reg */ #define FC_FIFO_EN 0x01 /* line control register */ #define LC_DIV_ACC 0x80 /* divisor latch access bit */ #define LC_BRK_CTRL 0x40 /* set break control */ #define LC_S_PAR 0x20 /* stick parity */ #define LC_EVEN_P 0x10 /* even parity select */ #define LC_PAR_E 0x08 /* parity enable */ #define LC_STOP_B 0x04 /* number of stop bits (0 - 1 bit) */ #define LC_W_LEN 0x03 /* unsigned short length (00 - 5, 01 - 6 etc.) */ /* line status register */ #define LS_NOP 0x80 /* not used */ #define LS_X_SHFT_E 0x40 /* 0=data transfer, 1=transmitter idle */ #define LS_X_HOLD_E 0x20 /* 0=ready, 1=transferring character */ #define LS_BREAK 0x10 /* break received */ #define LS_FRM_ERR 0x08 /* framing error */ #define LS_PAR_ERR 0x04 /* parity error */ #define LS_OVRN_ERR 0x02 /* overrun error */ #define LS_RCV_DATA_RD 0x01 /* data received */ /* modem status register */ #define MS_DCD 0x80 /* Data Carrier Detect in */ #define MS_RI 0x40 /* Ring Indicator in */ #define MS_DSR 0x20 /* Data Set Ready in */ #define MS_CTS 0x10 /* Clear To Send in */ #define MS_DELTA_DCD 0x08 /* Data Carrier Detect changed state */ #define MS_DELTA_RI 0x04 /* Ring Indicator changed state */ #define MS_DELTA_DSR 0x02 /* Data Set Ready changed state */ #define MS_DELTA_CTS 0x01 /* Clear To Send changed state */ /* data structure definitions */ #define N_OF_COM_REGS 8 struct com_data_struct { int fd; /* BSD/386 file descriptor */ char *path; /* BSD/386 pathname */ int addr; /* ISA I/O address */ unsigned char irq; /* ISA IRQ */ unsigned char flags; /* some general software flags */ struct queue *com_queue; /* XXX DEBUG obsolete MCL? */ unsigned char div_latch[2]; /* mirror of 16550 R0':R1' read/write */ unsigned char last_char_read; /* mirror of 16550 R0 read only */ unsigned char int_enable; /* mirror of 16550 R1 read/write */ unsigned char int_id; /* mirror of 16550 R2 read only */ unsigned char fifo_ctrl; /* mirror of 16550 R2 write only */ unsigned char line_ctrl; /* mirror of 16550 R3 read/write */ unsigned char modem_ctrl; /* mirror of 16550 R4 read/write */ unsigned char line_stat; /* mirror of 16550 R5 read/write */ unsigned char modem_stat; /* mirror of 16550 R6 read/write */ unsigned char uart_spare; /* mirror of 16550 R7 read/write */ }; /* DOS definitions -- parameters */ #define BITRATE_110 0x00 #define BITRATE_150 0x20 #define BITRATE_300 0x40 #define BITRATE_600 0x60 #define BITRATE_1200 0x80 #define BITRATE_2400 0xA0 #define BITRATE_4800 0xC0 #define BITRATE_9600 0xE0 #define PARITY_NONE 0x00 #define PARITY_ODD 0x08 #define PARITY_EVEN 0x18 #define STOPBIT_1 0x00 #define STOPBIT_2 0x04 #define TXLEN_7BITS 0x02 #define TXLEN_8BITS 0x03 /* DOS definitions -- return codes */ #define LS_SW_TIME_OUT LS_NOP /* return value used by DOS */ /* miscellaneous definitions */ #define DIV_LATCH_LOW 0 #define DIV_LATCH_HIGH 1 #define DIV_LATCH_LOW_WRITTEN 0x01 #define DIV_LATCH_HIGH_WRITTEN 0x02 #define DIV_LATCH_BOTH_WRITTEN 0x03 /* variable declarations */ extern int errno; /* routine declarations */ extern void int14(regcontext_t *REGS); extern void com_set_line(struct com_data_struct *, unsigned char, unsigned char); extern void init_com(int, char *, int, unsigned char); extern u_char com_port_in(int); extern void com_port_out(int, unsigned char); /* end of file com.h */