1/* $NetBSD: wsdisplay_vconsvar.h,v 1.24 2016/06/02 21:17:14 macallan Exp $ */
2
3/*-
4 * Copyright (c) 2005, 2006 Michael Lorenz
5 * 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 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef _WSDISPLAY_VCONS_H_
30#define _WSDISPLAY_VCONS_H_
31
32#ifdef _KERNEL_OPT
33#include "opt_wsdisplay_compat.h"
34#include "opt_vcons.h"
35#endif
36
37struct vcons_data;
38
39struct vcons_screen {
40 struct rasops_info scr_ri;
41 LIST_ENTRY(vcons_screen) next;
42 void *scr_cookie;
43 struct vcons_data *scr_vd;
44 struct vcons_data *scr_origvd;
45 const struct wsscreen_descr *scr_type;
46 uint32_t *scr_chars;
47 long *scr_attrs;
48 long scr_defattr;
49 /* static flags set by the driver */
50 uint32_t scr_flags;
51#define VCONS_NO_REDRAW 1 /* don't readraw in switch_screen */
52#define VCONS_SCREEN_IS_STATIC 2 /* don't free() this vcons_screen */
53#define VCONS_SWITCH_NEEDS_POLLING 4 /* rasops can overlap so we need to
54 * poll the busy flag when switching
55 * - for drivers that use software
56 * drawing */
57#define VCONS_DONT_DRAW 8 /* don't draw on this screen at all */
58/*
59 * the following flags are for drivers which either can't accelerate (all) copy
60 * operations or where drawing characters is faster than the blitter
61 * for example, Sun's Creator boards can't accelerate copycols()
62 */
63#define VCONS_NO_COPYCOLS 0x10 /* use putchar() based copycols() */
64#define VCONS_NO_COPYROWS 0x20 /* use putchar() based copyrows() */
65#define VCONS_DONT_READ 0x30 /* avoid framebuffer reads */
66 /* status flags used by vcons */
67 uint32_t scr_status;
68#define VCONS_IS_VISIBLE 1 /* this screen is currently visible */
69 /* non zero when some rasops operation is in progress */
70 int scr_busy;
71#ifdef WSDISPLAY_SCROLLSUPPORT
72 int scr_lines_in_buffer;
73 int scr_current_line;
74 int scr_line_wanted;
75 int scr_offset_to_zero;
76 int scr_current_offset;
77#endif
78#ifdef VCONS_DRAW_INTR
79 unsigned int scr_dirty;
80#endif
81};
82
83#define SCREEN_IS_VISIBLE(scr) (((scr)->scr_status & VCONS_IS_VISIBLE) != 0)
84#define SCREEN_IS_BUSY(scr) ((scr)->scr_busy != 0)
85#define SCREEN_CAN_DRAW(scr) (((scr)->scr_flags & VCONS_DONT_DRAW) == 0)
86#define SCREEN_BUSY(scr) ((scr)->scr_busy = 1)
87#define SCREEN_IDLE(scr) ((scr)->scr_busy = 0)
88#define SCREEN_VISIBLE(scr) ((scr)->scr_status |= VCONS_IS_VISIBLE)
89#define SCREEN_INVISIBLE(scr) ((scr)->scr_status &= ~VCONS_IS_VISIBLE)
90#define SCREEN_DISABLE_DRAWING(scr) ((scr)->scr_flags |= VCONS_DONT_DRAW)
91#define SCREEN_ENABLE_DRAWING(scr) ((scr)->scr_flags &= ~VCONS_DONT_DRAW)
92
93#define DEFATTR ((WS_DEFAULT_FG << 24) || (WS_DEFAULT_BG << 16))
94
95struct vcons_data {
96 /* usually the drivers softc */
97 void *cookie;
98
99 /*
100 * setup the rasops part of the passed vcons_screen, like
101 * geometry, framebuffer address, font, characters, acceleration.
102 * we pass the cookie as 1st parameter
103 */
104 void (*init_screen)(void *, struct vcons_screen *, int,
105 long *);
106
107 /* accessops */
108 int (*ioctl)(void *, void *, u_long, void *, int, struct lwp *);
109
110 /* rasops */
111 void (*copycols)(void *, int, int, int, int);
112 void (*erasecols)(void *, int, int, int, long);
113 void (*copyrows)(void *, int, int, int);
114 void (*eraserows)(void *, int, int, long);
115 void (*putchar)(void *, int, int, u_int, long);
116 void (*cursor)(void *, int, int, int);
117 /* called before vcons_redraw_screen */
118 void (*show_screen_cb)(struct vcons_screen *);
119 /* virtual screen management stuff */
120 void (*switch_cb)(void *, int, int);
121 void *switch_cb_arg;
122 struct callout switch_callout;
123 uint32_t switch_pending;
124 LIST_HEAD(, vcons_screen) screens;
125 struct vcons_screen *active, *wanted;
126 const struct wsscreen_descr *currenttype;
127 int switch_poll_count;
128#ifdef VCONS_DRAW_INTR
129 int cells;
130 long *attrs;
131 uint32_t *chars;
132 int cursor_offset;
133 callout_t intr;
134 int intr_valid;
135 void *intr_softint;
136 int use_intr; /* use intr drawing when non-zero */
137#endif
138};
139
140int vcons_init(struct vcons_data *, void *cookie, struct wsscreen_descr *,
141 struct wsdisplay_accessops *);
142
143int vcons_init_screen(struct vcons_data *, struct vcons_screen *, int,
144 long *);
145
146/* completely redraw the screen, clear it if RI_FULLCLEAR is set */
147void vcons_redraw_screen(struct vcons_screen *);
148
149#ifdef VCONS_DRAW_INTR
150/* redraw all dirty character cells */
151void vcons_update_screen(struct vcons_screen *);
152void vcons_invalidate_cache(struct vcons_data *);
153#else
154#define vcons_update_screen vcons_redraw_screen
155#endif
156
157void vcons_replay_msgbuf(struct vcons_screen *);
158
159void vcons_enable_polling(struct vcons_data *);
160void vcons_disable_polling(struct vcons_data *);
161void vcons_hard_switch(struct vcons_screen *);
162
163#endif /* _WSDISPLAY_VCONS_H_ */
164