1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/* $OpenBSD: dhureg.h,v 1.2 1997/05/29 00:05:05 niklas Exp $ */
/* $NetBSD: dhureg.h,v 1.2 1996/03/17 22:51:50 ragge Exp $ */
/*
* Copyright (c) 1996 Ken C. Wellsch. 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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.
*/
union w_b
{
u_short word;
struct {
u_char byte_lo;
u_char byte_hi;
} bytes;
};
struct DHUregs
{
volatile union w_b u_csr; /* Control/Status Register (R/W) */
volatile u_short dhu_rbuf; /* Receive Buffer (R only) */
#define dhu_txchar dhu_rbuf /* Transmit Character (W only) */
volatile u_short dhu_lpr; /* Line Parameter Register (R/W) */
volatile u_short dhu_stat; /* Line Status (R only) */
volatile u_short dhu_lnctrl; /* Line Control (R/W) */
volatile u_short dhu_tbufad1; /* Transmit Buffer Address 1 (R/W) */
volatile u_short dhu_tbufad2; /* Transmit Buffer Address 2 (R/W) */
volatile u_short dhu_tbufcnt; /* Transmit Buffer Count (R/W) */
};
#define dhu_csr u_csr.word
#define dhu_csr_lo u_csr.bytes.byte_lo
#define dhu_csr_hi u_csr.bytes.byte_hi
typedef struct DHUregs dhuregs;
/* CSR bits */
#define DHU_CSR_TX_ACTION 0100000
#define DHU_CSR_TXIE 0040000
#define DHU_CSR_DIAG_FAIL 0020000
#define DHU_CSR_TX_DMA_ERROR 0010000
#define DHU_CSR_TX_LINE_MASK 0007400
#define DHU_CSR_RX_DATA_AVAIL 0000200
#define DHU_CSR_RXIE 0000100
#define DHU_CSR_MASTER_RESET 0000040
#define DHU_CSR_UNUSED 0000020
#define DHU_CSR_CHANNEL_MASK 0000017
/* RBUF bits */
#define DHU_RBUF_DATA_VALID 0100000
#define DHU_RBUF_OVERRUN_ERR 0040000
#define DHU_RBUF_FRAMING_ERR 0020000
#define DHU_RBUF_PARITY_ERR 0010000
#define DHU_RBUF_RX_LINE_MASK 0007400
#define DHU_DIAG_CODE 0070001
#define DHU_MODEM_CODE 0070000
/* TXCHAR bits */
#define DHU_TXCHAR_DATA_VALID 0100000
/* LPR bits */
#define DHU_LPR_B50 0x0
#define DHU_LPR_B75 0x1
#define DHU_LPR_B110 0x2
#define DHU_LPR_B134 0x3
#define DHU_LPR_B150 0x4
#define DHU_LPR_B300 0x5
#define DHU_LPR_B600 0x6
#define DHU_LPR_B1200 0x7
#define DHU_LPR_B1800 0x8
#define DHU_LPR_B2000 0x9
#define DHU_LPR_B2400 0xA
#define DHU_LPR_B4800 0xB
#define DHU_LPR_B7200 0xC
#define DHU_LPR_B9600 0xD
#define DHU_LPR_B19200 0xE
#define DHU_LPR_B38400 0xF
#define DHU_LPR_5_BIT_CHAR 0000000
#define DHU_LPR_6_BIT_CHAR 0000010
#define DHU_LPR_7_BIT_CHAR 0000020
#define DHU_LPR_8_BIT_CHAR 0000030
#define DHU_LPR_PARENB 0000040
#define DHU_LPR_EPAR 0000100
#define DHU_LPR_2_STOP 0000200
/* STAT bits */
#define DHU_STAT_DSR 0100000
#define DHU_STAT_RI 0020000
#define DHU_STAT_DCD 0010000
#define DHU_STAT_CTS 0004000
#define DHU_STAT_DHU 0000400
/* LNCTRL bits */
#define DHU_LNCTRL_DMA_ABORT 0000001
#define DHU_LNCTRL_IAUTO 0000002
#define DHU_LNCTRL_RX_ENABLE 0000004
#define DHU_LNCTRL_BREAK 0000010
#define DHU_LNCTRL_OAUTO 0000020
#define DHU_LNCTRL_FORCE_XOFF 0000040
#define DHU_LNCTRL_LINK_TYPE 0000400
#define DHU_LNCTRL_DTR 0001000
#define DHU_LNCTRL_RTS 0010000
/* TBUFAD2 bits */
#define DHU_TBUFAD2_DMA_START 0000200
#define DHU_TBUFAD2_TX_ENABLE 0100000
|
