1/*-
2 * Copyright (c) 1999 FreeBSD(98) Porting Team.
3 * 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 as
10 *    the first lines of this file unmodified.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#include "opt_syscons.h"
30#include "opt_gdc.h"
31
32#include <sys/param.h>
33#include <sys/systm.h>
34#include <sys/kernel.h>
35#include <sys/module.h>
36#include <sys/fbio.h>
37#include <sys/consio.h>
38
39#include <dev/fb/fbreg.h>
40#include <dev/syscons/syscons.h>
41
42#ifndef SC_RENDER_DEBUG
43#define SC_RENDER_DEBUG		0
44#endif
45
46static vr_clear_t		gdc_txtclear;
47static vr_draw_border_t		gdc_txtborder;
48static vr_draw_t		gdc_txtdraw;
49static vr_set_cursor_t		gdc_txtcursor_shape;
50static vr_draw_cursor_t		gdc_txtcursor;
51#ifndef SC_NO_CUTPASTE
52static vr_draw_mouse_t		gdc_txtmouse;
53#else
54#define gdc_txtmouse		(vr_draw_mouse_t *)gdc_nop
55#endif
56
57#ifndef SC_NO_MODE_CHANGE
58static vr_draw_border_t		gdc_grborder;
59#endif
60
61static void			gdc_nop(scr_stat *scp, ...);
62
63static sc_rndr_sw_t txtrndrsw = {
64	(vr_init_t *)gdc_nop,
65	gdc_txtclear,
66	gdc_txtborder,
67	gdc_txtdraw,
68	gdc_txtcursor_shape,
69	gdc_txtcursor,
70	(vr_blink_cursor_t *)gdc_nop,
71	(vr_set_mouse_t *)gdc_nop,
72	gdc_txtmouse,
73};
74RENDERER(gdc, 0, txtrndrsw, gdc_set);
75
76#ifndef SC_NO_MODE_CHANGE
77static sc_rndr_sw_t grrndrsw = {
78	(vr_init_t *)gdc_nop,
79	(vr_clear_t *)gdc_nop,
80	gdc_grborder,
81	(vr_draw_t *)gdc_nop,
82	(vr_set_cursor_t *)gdc_nop,
83	(vr_draw_cursor_t *)gdc_nop,
84	(vr_blink_cursor_t *)gdc_nop,
85	(vr_set_mouse_t *)gdc_nop,
86	(vr_draw_mouse_t *)gdc_nop,
87};
88RENDERER(gdc, GRAPHICS_MODE, grrndrsw, gdc_set);
89#endif /* SC_NO_MODE_CHANGE */
90
91RENDERER_MODULE(gdc, gdc_set);
92
93static void
94gdc_nop(scr_stat *scp, ...)
95{
96}
97
98/* text mode renderer */
99
100static void
101gdc_txtclear(scr_stat *scp, int c, int attr)
102{
103	sc_vtb_clear(&scp->scr, c, attr);
104}
105
106static void
107gdc_txtborder(scr_stat *scp, int color)
108{
109	vidd_set_border(scp->sc->adp, color);
110}
111
112static void
113gdc_txtdraw(scr_stat *scp, int from, int count, int flip)
114{
115	vm_offset_t p;
116	int c;
117	int a;
118
119	if (from + count > scp->xsize*scp->ysize)
120		count = scp->xsize*scp->ysize - from;
121
122	if (flip) {
123		for (p = sc_vtb_pointer(&scp->scr, from); count-- > 0; ++from) {
124			c = sc_vtb_getc(&scp->vtb, from);
125			a = sc_vtb_geta(&scp->vtb, from);
126#if 0
127			a ^= 0x0800;
128#else
129			a = (a & 0x8800) | ((a & 0x7000) >> 4)
130				| ((a & 0x0700) << 4);
131#endif
132			p = sc_vtb_putchar(&scp->scr, p, c, a);
133		}
134	} else {
135		sc_vtb_copy(&scp->vtb, from, &scp->scr, from, count);
136	}
137}
138
139static void
140gdc_txtcursor_shape(scr_stat *scp, int base, int height, int blink)
141{
142	if (base < 0 || base >= scp->font_size)
143		return;
144	/* the caller may set height <= 0 in order to disable the cursor */
145	vidd_set_hw_cursor_shape(scp->sc->adp, base, height, scp->font_size,
146	    blink);
147}
148
149static void
150gdc_txtcursor(scr_stat *scp, int at, int blink, int on, int flip)
151{
152	if (on) {
153		scp->status |= VR_CURSOR_ON;
154		vidd_set_hw_cursor(scp->sc->adp, at%scp->xsize,
155		    at/scp->xsize);
156	} else {
157		if (scp->status & VR_CURSOR_ON)
158			vidd_set_hw_cursor(scp->sc->adp, -1, -1);
159		scp->status &= ~VR_CURSOR_ON;
160	}
161}
162
163#ifndef SC_NO_CUTPASTE
164
165static void
166draw_txtmouse(scr_stat *scp, int x, int y)
167{
168	int at;
169	int a;
170
171	at = (y/scp->font_size - scp->yoff)*scp->xsize + x/8 - scp->xoff;
172	a = sc_vtb_geta(&scp->vtb, at);
173#if 0
174	a ^= 0x0800;
175#else
176	a = (a & 0x8800) | ((a & 0x7000) >> 4)
177		| ((a & 0x0700) << 4);
178#endif
179	sc_vtb_putc(&scp->scr, at, sc_vtb_getc(&scp->scr, at), a);
180}
181
182static void
183remove_txtmouse(scr_stat *scp, int x, int y)
184{
185}
186
187static void
188gdc_txtmouse(scr_stat *scp, int x, int y, int on)
189{
190	if (on)
191		draw_txtmouse(scp, x, y);
192	else
193		remove_txtmouse(scp, x, y);
194}
195
196#endif /* SC_NO_CUTPASTE */
197
198#ifndef SC_NO_MODE_CHANGE
199
200/* graphics mode renderer */
201
202static void
203gdc_grborder(scr_stat *scp, int color)
204{
205	vidd_set_border(scp->sc->adp, color);
206}
207
208#endif /* SC_NO_MODE_CHANGE */
209