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author | dyson <dyson@FreeBSD.org> | 1997-08-09 01:43:15 +0000 |
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committer | dyson <dyson@FreeBSD.org> | 1997-08-09 01:43:15 +0000 |
commit | 305573cb2990c5d329d149cef5a3b5533b1e8fd9 (patch) | |
tree | df06304b637358dbe8a006fdb7a6ea5955fee179 /usr.bin/doscmd/com.h | |
parent | dede28832bba6a9de7a428ff58df92439bddbc9c (diff) | |
download | FreeBSD-src-305573cb2990c5d329d149cef5a3b5533b1e8fd9.zip FreeBSD-src-305573cb2990c5d329d149cef5a3b5533b1e8fd9.tar.gz |
Add our doscmd to the tree. This is a result of work from BSDI, and
a group of dos emulator developers.
Submitted by: Jonathan Lemon <jlemon@americantv.com>
Obtained from: BSDI
Diffstat (limited to 'usr.bin/doscmd/com.h')
-rw-r--r-- | usr.bin/doscmd/com.h | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/usr.bin/doscmd/com.h b/usr.bin/doscmd/com.h new file mode 100644 index 0000000..c2857e2 --- /dev/null +++ b/usr.bin/doscmd/com.h @@ -0,0 +1,167 @@ +/* + * 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 */ |