1/*	$NetBSD: ite_rh.c,v 1.12 2009/03/18 17:06:42 cegger Exp $ */
2
3/*
4 * Copyright (c) 1994 Markus Wild
5 * Copyright (c) 1994 Lutz Vieweg
6 * 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 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *      This product includes software developed by Lutz Vieweg.
19 * 4. The name of the author may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33#include "opt_retina.h"
34
35#include <sys/cdefs.h>
36__KERNEL_RCSID(0, "$NetBSD: ite_rh.c,v 1.12 2009/03/18 17:06:42 cegger Exp $");
37
38#include "grfrh.h"
39#if NGRFRH > 0
40
41#include <sys/param.h>
42#include <sys/conf.h>
43#include <sys/proc.h>
44#include <sys/device.h>
45#include <sys/ioctl.h>
46#include <sys/tty.h>
47#include <sys/systm.h>
48#include <dev/cons.h>
49#include <machine/cpu.h>
50#include <amiga/amiga/device.h>
51#include <amiga/dev/grfioctl.h>
52#include <amiga/dev/grfvar.h>
53#include <amiga/dev/grf_rhreg.h>
54#include <amiga/dev/itevar.h>
55
56#ifdef	RETINA_SPEED_HACK
57static void screen_up(struct ite_softc *, int, int, int);
58static void screen_down(struct ite_softc *, int, int, int);
59#endif
60
61/*
62 * grfrh_cnprobe is called when the console is being initialized
63 * i.e. very early.  grfconfig() has been called, so this implies
64 * that rt_init() was called.  If we are functioning rh_inited
65 * will be true.
66 */
67int
68grfrh_cnprobe(void)
69{
70	static int done;
71	int rv;
72
73	if (done == 0)
74		rv = CN_INTERNAL;
75	else
76		rv = CN_NORMAL;
77	done = 1;
78	return(rv);
79}
80
81
82void
83grfrh_iteinit(struct grf_softc *gp)
84{
85	gp->g_iteinit = rh_init;
86	gp->g_itedeinit = rh_deinit;
87	gp->g_iteclear = rh_clear;
88	gp->g_iteputc = rh_putc;
89	gp->g_itescroll = rh_scroll;
90	gp->g_itecursor = rh_cursor;
91}
92
93
94void
95rh_init(struct ite_softc *ip)
96{
97	struct MonDef *md;
98
99#if 0 /* Not in ite_rt.c - DC */
100	if (ip->grf == 0)
101		ip->grf = &grf_softc[ip - ite_softc];
102#endif
103
104	ip->priv = ip->grf->g_data;
105	md = (struct MonDef *) ip->priv;
106
107	ip->cols = md->TX;
108	ip->rows = md->TY;
109}
110
111
112void
113rh_cursor(struct ite_softc *ip, int flag)
114{
115#if 0
116	volatile u_char *ba = ip->grf->g_regkva;
117#endif
118
119	if (flag == START_CURSOROPT || flag == END_CURSOROPT)
120		return;
121
122	if (flag == ERASE_CURSOR) {
123#if 0
124		/* disable cursor */
125		WCrt (ba, CRT_ID_CURSOR_START,
126		    RCrt (ba, CRT_ID_CURSOR_START) | 0x20);
127#endif
128	} else {
129		int pos = ip->curx + ip->cury * ip->cols;
130#if 0
131		/* make sure to enable cursor */
132		WCrt (ba, CRT_ID_CURSOR_START,
133		    RCrt (ba, CRT_ID_CURSOR_START) & ~0x20);
134#endif
135
136		/* and position it */
137		RZ3SetCursorPos (ip->grf, pos);
138
139		ip->cursorx = ip->curx;
140		ip->cursory = ip->cury;
141	}
142}
143
144
145#ifdef	RETINA_SPEED_HACK
146static void
147screen_up(struct ite_softc *ip, int top, int bottom, int lines)
148{
149
150	/* do some bounds-checking here.. */
151	if (top >= bottom)
152		return;
153
154	if (top + lines >= bottom) {
155		RZ3AlphaErase(ip->grf, 0, top, bottom - top, ip->cols);
156		return;
157	}
158
159	RZ3AlphaCopy(ip->grf, 0, top+lines, 0, top, ip->cols, bottom-top-lines+1);
160	RZ3AlphaErase(ip->grf, 0, bottom - lines + 1, ip->cols, lines);
161}
162
163
164static void
165screen_down (struct ite_softc *ip, int top, int bottom, int lines)
166{
167
168	/* do some bounds-checking here.. */
169	if (top >= bottom)
170		return;
171
172	if (top + lines >= bottom) {
173		RZ3AlphaErase(ip->grf, 0, top, bottom - top, ip->cols);
174		return;
175	}
176
177	RZ3AlphaCopy(ip->grf, 0, top, 0, top+lines, ip->cols, bottom-top-lines+1);
178	RZ3AlphaErase(ip->grf, 0, top, ip->cols, lines);
179}
180#endif	/* RETINA_SPEED_HACK */
181
182
183void
184rh_deinit(struct ite_softc *ip)
185{
186	ip->flags &= ~ITE_INITED;
187}
188
189
190void
191rh_putc(struct ite_softc *ip, int c, int dy, int dx, int mode)
192{
193	volatile u_char * fb = ip->grf->g_fbkva;
194	register u_char attr;
195
196	attr = (mode & ATTR_INV) ? 0x21 : 0x10;
197	if (mode & ATTR_UL)     attr  = 0x01;	/* ???????? */
198	if (mode & ATTR_BOLD)   attr |= 0x08;
199	if (mode & ATTR_BLINK)  attr |= 0x80;
200
201	fb += 4 * (dy * ip->cols + dx);
202	*fb++ = c; *fb = attr;
203}
204
205
206void
207rh_clear(struct ite_softc *ip, int sy, int sx, int h, int w)
208{
209	RZ3AlphaErase (ip->grf, sx, sy, w, h);
210}
211
212
213/*
214 * RETINA_SPEED_HACK code seems to work on some boards and on others
215 * it causes text to smear horizontally
216 */
217void
218rh_scroll(struct ite_softc *ip, int sy, int sx, int count, int dir)
219{
220#ifndef	RETINA_SPEED_HACK
221	u_long *fb = (u_long *)__UNVOLATILE(ip->grf->g_fbkva);
222#endif
223
224	rh_cursor(ip, ERASE_CURSOR);
225
226	if (dir == SCROLL_UP) {
227#ifdef	RETINA_SPEED_HACK
228		screen_up(ip, sy - count, ip->bottom_margin, count);
229#else
230		memcpy(fb + (sy - count) * ip->cols, fb + sy * ip->cols,
231		    4 * (ip->bottom_margin - sy + 1) * ip->cols);
232		rh_clear(ip, ip->bottom_margin + 1 - count, 0, count, ip->cols);
233#endif
234	} else if (dir == SCROLL_DOWN) {
235#ifdef	RETINA_SPEED_HACK
236		screen_down(ip, sy, ip->bottom_margin, count);
237#else
238		memcpy(fb + (sy + count) * ip->cols, fb + sy * ip->cols,
239		    4 * (ip->bottom_margin - sy - count + 1) * ip->cols);
240		rh_clear(ip, sy, 0, count, ip->cols);
241#endif
242	} else if (dir == SCROLL_RIGHT) {
243		RZ3AlphaCopy(ip->grf, sx, sy, sx + count, sy,
244		    ip->cols - (sx + count), 1);
245		RZ3AlphaErase(ip->grf, sx, sy, count, 1);
246	} else {
247		RZ3AlphaCopy(ip->grf, sx + count, sy, sx, sy,
248		    ip->cols - (sx + count), 1);
249		RZ3AlphaErase(ip->grf, ip->cols - count, sy, count, 1);
250	}
251#ifndef	RETINA_SPEED_HACK
252	rh_cursor(ip, !ERASE_CURSOR);
253#endif
254}
255#endif /* NGRFRH */
256