FreeBSD/Linux Kernel Cross Reference
sys/dev/dcons/dcons.h
1 /*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (C) 2002-2004
5 * Hidetoshi Shimokawa. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 *
18 * This product includes software developed by Hidetoshi Shimokawa.
19 *
20 * 4. Neither the name of the author nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * $Id: dcons.h,v 1.15 2003/10/23 15:05:31 simokawa Exp $
37 * $FreeBSD$
38 */
39
40 #if defined(_KERNEL) || defined(_BOOT)
41 #define V volatile
42 #else
43 #define V
44 #endif
45
46 #define DCONS_NPORT 2
47 #define DCONS_CON 0
48 #define DCONS_GDB 1
49
50 struct dcons_buf {
51 #define DCONS_VERSION 2
52 V u_int32_t version;
53 V u_int32_t ooffset[DCONS_NPORT];
54 V u_int32_t ioffset[DCONS_NPORT];
55 V u_int32_t osize[DCONS_NPORT];
56 V u_int32_t isize[DCONS_NPORT];
57 #define DCONS_MAGIC 0x64636f6e /* "dcon" */
58 V u_int32_t magic;
59 #define DCONS_GEN_SHIFT (24)
60 #define DCONS_GEN_MASK (0xff)
61 #define DCONS_POS_MASK ((1<< DCONS_GEN_SHIFT) - 1)
62 V u_int32_t optr[DCONS_NPORT];
63 V u_int32_t iptr[DCONS_NPORT];
64 V char buf[0];
65 };
66
67 #define DCONS_CSR_VAL_VER 0x64636f /* "dco" */
68 #define DCONS_CSR_KEY_HI 0x3a
69 #define DCONS_CSR_KEY_LO 0x3b
70 #define DCONS_CSR_KEY_RESET_HI 0x3c
71 #define DCONS_CSR_KEY_RESET_LO 0x3d
72
73 #define DCONS_HEADER_SIZE sizeof(struct dcons_buf)
74 #define DCONS_MAKE_PTR(x) htonl(((x)->gen << DCONS_GEN_SHIFT) | (x)->pos)
75 #define DCONS_NEXT_GEN(x) (((x) + 1) & DCONS_GEN_MASK)
76
77 struct dcons_ch {
78 u_int32_t size;
79 u_int32_t gen;
80 u_int32_t pos;
81 #if defined(_KERNEL) || defined(_BOOT)
82 V u_int32_t *ptr;
83 V char *buf;
84 #else
85 off_t buf;
86 #endif
87 };
88
89 #define KEY_CTRLB 2 /* ^B */
90 #define KEY_CR 13 /* CR '\r' */
91 #define KEY_TILDE 126 /* ~ */
92 #define STATE0 0
93 #define STATE1 1
94 #define STATE2 2
95 #define STATE3 3
96
97 #if defined(_KERNEL) || defined(_BOOT)
98 struct dcons_softc {
99 struct dcons_ch o, i;
100 int brk_state;
101 #define DC_GDB 1
102 int flags;
103 void *tty;
104 };
105
106 int dcons_checkc(struct dcons_softc *);
107 int dcons_ischar(struct dcons_softc *);
108 void dcons_putc(struct dcons_softc *, int);
109 int dcons_load_buffer(struct dcons_buf *, int, struct dcons_softc *);
110 void dcons_init(struct dcons_buf *, int, struct dcons_softc *);
111 #endif
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