1 /* $OpenBSD: pcdisplayvar.h,v 1.9 2007/02/11 20:29:22 miod Exp $ */
2 /* $NetBSD: pcdisplayvar.h,v 1.8 2000/01/25 02:44:03 ad Exp $ */
3
4 /*
5 * Copyright (c) 1998
6 * Matthias Drochner. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29
30 struct pcdisplayscreen {
31 struct pcdisplay_handle *hdl;
32
33 const struct wsscreen_descr *type;
34
35 int active; /* currently displayed */
36 u_int16_t *mem; /* backing store for contents */
37
38 int cursoron; /* cursor displayed? */
39 #ifdef PCDISPLAY_SOFTCURSOR
40 int cursortmp; /* glyph & attribute behind software cursor */
41 #endif
42 int vc_ccol, vc_crow; /* current cursor position */
43
44 int dispoffset; /* offset of displayed area in video mem */
45 int visibleoffset;
46 };
47
48 struct pcdisplay_handle {
49 bus_space_tag_t ph_iot, ph_memt;
50 bus_space_handle_t ph_ioh_6845, ph_memh;
51 };
52
53 static inline u_int8_t _pcdisplay_6845_read(struct pcdisplay_handle *,
54 int);
55 static inline void _pcdisplay_6845_write(struct pcdisplay_handle *,
56 int, u_int8_t);
57
58 static inline u_int8_t _pcdisplay_6845_read(ph, reg)
59 struct pcdisplay_handle *ph;
60 int reg;
61 {
62 bus_space_write_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_INDEX, reg);
63 return (bus_space_read_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_DATA));
64 }
65
66 static inline void _pcdisplay_6845_write(ph, reg, val)
67 struct pcdisplay_handle *ph;
68 int reg;
69 u_int8_t val;
70 {
71 bus_space_write_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_INDEX, reg);
72 bus_space_write_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_DATA, val);
73 }
74
75 #define pcdisplay_6845_read(ph, reg) \
76 _pcdisplay_6845_read(ph, offsetof(struct reg_mc6845, reg))
77 #define pcdisplay_6845_write(ph, reg, val) \
78 _pcdisplay_6845_write(ph, offsetof(struct reg_mc6845, reg), val)
79
80 void pcdisplay_cursor_init(struct pcdisplayscreen *, int);
81 void pcdisplay_cursor_reset(struct pcdisplayscreen *);
82 void pcdisplay_cursor(void *, int, int, int);
83 #if 0
84 unsigned int pcdisplay_mapchar_simple(void *, int);
85 #endif
86 int pcdisplay_mapchar(void *, int, unsigned int *);
87 void pcdisplay_putchar(void *, int, int, u_int, long);
88 struct wsdisplay_charcell;
89 int pcdisplay_getchar(void *, int, int, struct wsdisplay_charcell *);
90 void pcdisplay_copycols(void *, int, int, int,int);
91 void pcdisplay_erasecols(void *, int, int, int, long);
92 void pcdisplay_copyrows(void *, int, int, int);
93 void pcdisplay_eraserows(void *, int, int, long);