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1.1 root 1: /*-
2: * Copyright (c) 1991 The Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. All advertising materials mentioning features or use of this software
14: * must display the following acknowledgement:
15: * This product includes software developed by the University of
16: * California, Berkeley and its contributors.
17: * 4. Neither the name of the University nor the names of its contributors
18: * may be used to endorse or promote products derived from this software
19: * without specific prior written permission.
20: *
21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31: * SUCH DAMAGE.
32: *
1.1.1.2 ! root 33: * from: @(#)comreg.h 7.2 (Berkeley) 5/9/91
! 34: * comreg.h,v 1.2 1993/05/22 08:01:09 cgd Exp
1.1 root 35: */
36:
37:
38: /* 16 bit baud rate divisor (lower byte in dca_data, upper in dca_ier) */
39: #define COMBRD(x) (1843200 / (16*(x)))
40:
41: /* interrupt enable register */
42: #define IER_ERXRDY 0x1
43: #define IER_ETXRDY 0x2
44: #define IER_ERLS 0x4
45: #define IER_EMSC 0x8
46:
47: /* interrupt identification register */
48: #define IIR_IMASK 0xf
49: #define IIR_RXTOUT 0xc
50: #define IIR_RLS 0x6
51: #define IIR_RXRDY 0x4
52: #define IIR_TXRDY 0x2
53: #define IIR_NOPEND 0x1
54: #define IIR_MLSC 0x0
55: #define IIR_FIFO_MASK 0xc0 /* set if FIFOs are enabled */
56:
57: /* fifo control register */
58: #define FIFO_ENABLE 0x01
59: #define FIFO_RCV_RST 0x02
60: #define FIFO_XMT_RST 0x04
61: #define FIFO_DMA_MODE 0x08
62: #define FIFO_TRIGGER_1 0x00
63: #define FIFO_TRIGGER_4 0x40
64: #define FIFO_TRIGGER_8 0x80
65: #define FIFO_TRIGGER_14 0xc0
66:
67: /* character format control register */
68: #define CFCR_DLAB 0x80
69: #define CFCR_SBREAK 0x40
70: #define CFCR_PZERO 0x30
71: #define CFCR_PONE 0x20
72: #define CFCR_PEVEN 0x10
73: #define CFCR_PODD 0x00
74: #define CFCR_PENAB 0x08
75: #define CFCR_STOPB 0x04
76: #define CFCR_8BITS 0x03
77: #define CFCR_7BITS 0x02
78: #define CFCR_6BITS 0x01
79: #define CFCR_5BITS 0x00
80:
81: /* modem control register */
82: #define MCR_LOOPBACK 0x10
83: #define MCR_IENABLE 0x08
84: #define MCR_DRS 0x04
85: #define MCR_RTS 0x02
86: #define MCR_DTR 0x01
87:
88: /* line status register */
89: #define LSR_RCV_FIFO 0x80
90: #define LSR_TSRE 0x40
91: #define LSR_TXRDY 0x20
92: #define LSR_BI 0x10
93: #define LSR_FE 0x08
94: #define LSR_PE 0x04
95: #define LSR_OE 0x02
96: #define LSR_RXRDY 0x01
97: #define LSR_RCV_MASK 0x1f
98:
99: /* modem status register */
100: #define MSR_DCD 0x80
101: #define MSR_RI 0x40
102: #define MSR_DSR 0x20
103: #define MSR_CTS 0x10
104: #define MSR_DDCD 0x08
105: #define MSR_TERI 0x04
106: #define MSR_DDSR 0x02
107: #define MSR_DCTS 0x01
108:
109: /*
110: * WARNING: Serial console is assumed to be at COM1 address
111: * and CONUNIT must be 0.
112: */
113: #define CONADDR (0x3f8)
114: #define CONUNIT (0)
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