FreeBSD/Linux Kernel Cross Reference
sys/i386/isa/sioreg.h
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 *
33 * from: @(#)comreg.h 7.2 (Berkeley) 5/9/91
34 * $FreeBSD: src/sys/i386/isa/sioreg.h,v 1.4.4.2 1999/09/05 08:13:32 peter Exp $
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_RX_LOW 0x00
63 #define FIFO_RX_MEDL 0x40
64 #define FIFO_RX_MEDH 0x80
65 #define FIFO_RX_HIGH 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 * Well, maybe not...
114 */
115 #ifndef CONADDR
116 #define CONADDR (0x3F8)
117 #endif
118
119 #ifndef CONUNIT
120 #define CONUNIT (0)
121 #endif
122
123 #ifndef CONSPEED
124 #define CONSPEED (9600)
125 #endif
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