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1/* $OpenBSD: pcdisplayvar.h,v 1.13 2020/05/25 09:55:48 jsg 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
30struct 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
48struct pcdisplay_handle {
49 bus_space_tag_t ph_iot, ph_memt;
50 bus_space_handle_t ph_ioh_6845, ph_memh;
51};
52
53static inline u_int8_t _pcdisplay_6845_read(struct pcdisplay_handle *, int);
54static inline void _pcdisplay_6845_write(struct pcdisplay_handle *,
55 int, u_int8_t);
56
57static inline u_int8_t
58_pcdisplay_6845_read(struct pcdisplay_handle *ph, int reg)
59{
60 bus_space_write_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_INDEX, reg);
61 return (bus_space_read_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_DATA));
62}
63
64static inline void
65_pcdisplay_6845_write(struct pcdisplay_handle *ph, int reg, u_int8_t val)
66{
67 bus_space_write_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_INDEX, reg);
68 bus_space_write_1(ph->ph_iot, ph->ph_ioh_6845, MC6845_DATA, val);
69}
70
71#define pcdisplay_6845_read(ph, reg) \
72 _pcdisplay_6845_read(ph, offsetof(struct reg_mc6845, reg))
73#define pcdisplay_6845_write(ph, reg, val) \
74 _pcdisplay_6845_write(ph, offsetof(struct reg_mc6845, reg), val)
75
76void pcdisplay_cursor_init(struct pcdisplayscreen *, int);
77void pcdisplay_cursor_reset(struct pcdisplayscreen *);
78int pcdisplay_cursor(void *, int, int, int);
79int pcdisplay_mapchar(void *, int, unsigned int *);
80int pcdisplay_putchar(void *, int, int, u_int, uint32_t);
81struct wsdisplay_charcell;
82int pcdisplay_getchar(void *, int, int, struct wsdisplay_charcell *);
83int pcdisplay_copycols(void *, int, int, int,int);
84int pcdisplay_erasecols(void *, int, int, int, uint32_t);
85int pcdisplay_copyrows(void *, int, int, int);
86int pcdisplay_eraserows(void *, int, int, uint32_t);