FreeBSD/Linux Kernel Cross Reference
sys/dev/dcons/dcons.h
1 /*-
2 * Copyright (C) 2002-2004
3 * Hidetoshi Shimokawa. 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 *
16 * This product includes software developed by Hidetoshi Shimokawa.
17 *
18 * 4. Neither the name of the author nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $Id: dcons.h,v 1.15 2003/10/23 15:05:31 simokawa Exp $
35 * $FreeBSD$
36 */
37
38 #if defined(_KERNEL) || defined(_BOOT)
39 #define V volatile
40 #else
41 #define V
42 #endif
43
44 #define DCONS_NPORT 2
45 #define DCONS_CON 0
46 #define DCONS_GDB 1
47
48 struct dcons_buf {
49 #define DCONS_VERSION 2
50 V u_int32_t version;
51 V u_int32_t ooffset[DCONS_NPORT];
52 V u_int32_t ioffset[DCONS_NPORT];
53 V u_int32_t osize[DCONS_NPORT];
54 V u_int32_t isize[DCONS_NPORT];
55 #define DCONS_MAGIC 0x64636f6e /* "dcon" */
56 V u_int32_t magic;
57 #define DCONS_GEN_SHIFT (24)
58 #define DCONS_GEN_MASK (0xff)
59 #define DCONS_POS_MASK ((1<< DCONS_GEN_SHIFT) - 1)
60 V u_int32_t optr[DCONS_NPORT];
61 V u_int32_t iptr[DCONS_NPORT];
62 V char buf[0];
63 };
64
65 #define DCONS_CSR_VAL_VER 0x64636f /* "dco" */
66 #define DCONS_CSR_KEY_HI 0x3a
67 #define DCONS_CSR_KEY_LO 0x3b
68 #define DCONS_CSR_KEY_RESET_HI 0x3c
69 #define DCONS_CSR_KEY_RESET_LO 0x3d
70
71 #define DCONS_HEADER_SIZE sizeof(struct dcons_buf)
72 #define DCONS_MAKE_PTR(x) htonl(((x)->gen << DCONS_GEN_SHIFT) | (x)->pos)
73 #define DCONS_NEXT_GEN(x) (((x) + 1) & DCONS_GEN_MASK)
74
75 struct dcons_ch {
76 u_int32_t size;
77 u_int32_t gen;
78 u_int32_t pos;
79 #if defined(_KERNEL) || defined(_BOOT)
80 V u_int32_t *ptr;
81 V char *buf;
82 #else
83 off_t buf;
84 #endif
85 };
86
87 #define KEY_CTRLB 2 /* ^B */
88 #define KEY_CR 13 /* CR '\r' */
89 #define KEY_TILDE 126 /* ~ */
90 #define STATE0 0
91 #define STATE1 1
92 #define STATE2 2
93 #define STATE3 3
94
95 #if defined(_KERNEL) || defined(_BOOT)
96 struct dcons_softc {
97 struct dcons_ch o, i;
98 int brk_state;
99 #define DC_GDB 1
100 int flags;
101 void *dev;
102 };
103
104 int dcons_checkc(struct dcons_softc *);
105 int dcons_ischar(struct dcons_softc *);
106 void dcons_putc(struct dcons_softc *, int);
107 int dcons_load_buffer(struct dcons_buf *, int, struct dcons_softc *);
108 void dcons_init(struct dcons_buf *, int, struct dcons_softc *);
109 #endif
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