mirror of
https://github.com/freebsd/freebsd-src
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316 lines
7.5 KiB
C
316 lines
7.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer as
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* the first lines of this file unmodified.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Copyright (c) 2000 Andrew Miklic
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*/
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#include <sys/cdefs.h>
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#include "opt_syscons.h"
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#ifdef __powerpc__
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#include "opt_ofwfb.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/fbio.h>
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#include <sys/consio.h>
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#include <machine/bus.h>
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#include <dev/fb/fbreg.h>
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#include <dev/syscons/syscons.h>
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#ifndef SC_RENDER_DEBUG
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#define SC_RENDER_DEBUG 0
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#endif
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static vr_clear_t gfb_clear;
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static vr_draw_border_t gfb_border;
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static vr_draw_t gfb_draw;
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static vr_set_cursor_t gfb_cursor_shape;
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static vr_draw_cursor_t gfb_cursor;
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static vr_blink_cursor_t gfb_blink;
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#ifndef SC_NO_CUTPASTE
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static vr_draw_mouse_t gfb_mouse;
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#else
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#define gfb_mouse (vr_draw_mouse_t *)gfb_nop
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#endif
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static void gfb_nop(scr_stat *scp);
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sc_rndr_sw_t txtrndrsw = {
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(vr_init_t *)gfb_nop,
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gfb_clear,
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gfb_border,
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gfb_draw,
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gfb_cursor_shape,
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gfb_cursor,
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gfb_blink,
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(vr_set_mouse_t *)gfb_nop,
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gfb_mouse,
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};
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#ifdef SC_PIXEL_MODE
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sc_rndr_sw_t gfbrndrsw = {
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(vr_init_t *)gfb_nop,
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gfb_clear,
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gfb_border,
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gfb_draw,
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gfb_cursor_shape,
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gfb_cursor,
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gfb_blink,
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(vr_set_mouse_t *)gfb_nop,
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gfb_mouse,
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};
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#endif /* SC_PIXEL_MODE */
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#ifndef SC_NO_MODE_CHANGE
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sc_rndr_sw_t grrndrsw = {
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(vr_init_t *)gfb_nop,
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(vr_clear_t *)gfb_nop,
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gfb_border,
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(vr_draw_t *)gfb_nop,
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(vr_set_cursor_t *)gfb_nop,
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(vr_draw_cursor_t *)gfb_nop,
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(vr_blink_cursor_t *)gfb_nop,
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(vr_set_mouse_t *)gfb_nop,
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(vr_draw_mouse_t *)gfb_nop,
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};
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#endif /* SC_NO_MODE_CHANGE */
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#ifndef SC_NO_CUTPASTE
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static u_char mouse_pointer[16] = {
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0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
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0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
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};
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#endif
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static void
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gfb_nop(scr_stat *scp)
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{
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}
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/* text mode renderer */
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static void
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gfb_clear(scr_stat *scp, int c, int attr)
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{
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vidd_clear(scp->sc->adp);
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}
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static void
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gfb_border(scr_stat *scp, int color)
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{
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vidd_set_border(scp->sc->adp, color);
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}
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static void
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gfb_draw(scr_stat *scp, int from, int count, int flip)
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{
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int c;
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int a;
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int i, n;
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video_adapter_t *adp;
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adp = scp->sc->adp;
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/*
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Determine if we need to scroll based on the offset
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and the number of characters to be displayed...
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*/
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if (from + count > scp->xsize*scp->ysize) {
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/*
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Calculate the number of characters past the end of the
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visible screen...
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*/
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count = (from + count) -
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(adp->va_info.vi_width * adp->va_info.vi_height);
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/*
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Calculate the number of rows past the end of the visible
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screen...
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*/
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n = (count / adp->va_info.vi_width) + 1;
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/* Scroll to make room for new text rows... */
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vidd_copy(adp, n, 0, n);
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#if 0
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vidd_clear(adp, n);
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#endif
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/* Display new text rows... */
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vidd_puts(adp, from,
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(u_int16_t *)sc_vtb_pointer(&scp->vtb, from), count);
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}
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/*
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We don't need to scroll, so we can just put the characters
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all-at-once...
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*/
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else {
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/*
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Determine the method by which we are to display characters
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(are we going to print forwards or backwards?
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do we need to do a character-by-character copy, then?)...
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*/
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if (flip)
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for (i = count; i-- > 0; ++from) {
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c = sc_vtb_getc(&scp->vtb, from);
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a = sc_vtb_geta(&scp->vtb, from) >> 8;
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vidd_putc(adp, from, c,
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(a >> 4) | ((a & 0xf) << 4));
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}
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else {
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vidd_puts(adp, from,
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(u_int16_t *)sc_vtb_pointer(&scp->vtb, from),
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count);
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}
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}
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}
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static void
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gfb_cursor_shape(scr_stat *scp, int base, int height, int blink)
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{
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if (base < 0 || base >= scp->font_size)
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return;
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/* the caller may set height <= 0 in order to disable the cursor */
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#if 0
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scp->cursor_base = base;
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scp->cursor_height = height;
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#endif
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vidd_set_hw_cursor_shape(scp->sc->adp, base, height, scp->font_size,
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blink);
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}
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static int pxlblinkrate = 0;
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#if defined(SC_OFWFB)
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static void
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gfb_cursor(scr_stat *scp, int at, int blink, int on, int flip)
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{
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video_adapter_t *adp;
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int a, c;
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if (scp->curs_attr.height <= 0) /* the text cursor is disabled */
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return;
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adp = scp->sc->adp;
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if(blink) {
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scp->status |= VR_CURSOR_BLINK;
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if (on) {
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scp->status |= VR_CURSOR_ON;
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vidd_set_hw_cursor(adp, at%scp->xsize, at/scp->xsize);
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} else {
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if (scp->status & VR_CURSOR_ON)
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vidd_set_hw_cursor(adp, -1, -1);
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scp->status &= ~VR_CURSOR_ON;
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}
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} else {
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scp->status &= ~VR_CURSOR_BLINK;
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if(on) {
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scp->status |= VR_CURSOR_ON;
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vidd_putc(scp->sc->adp, scp->cursor_oldpos,
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sc_vtb_getc(&scp->vtb, scp->cursor_oldpos),
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sc_vtb_geta(&scp->vtb, scp->cursor_oldpos) >> 8);
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a = sc_vtb_geta(&scp->vtb, at) >> 8;
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c = sc_vtb_getc(&scp->vtb, at);
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vidd_putc(scp->sc->adp, at, c,
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(a >> 4) | ((a & 0xf) << 4));
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} else {
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if (scp->status & VR_CURSOR_ON)
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vidd_putc(scp->sc->adp, at,
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sc_vtb_getc(&scp->vtb, at),
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sc_vtb_geta(&scp->vtb, at) >> 8);
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scp->status &= ~VR_CURSOR_ON;
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}
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}
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}
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#else
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static void
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gfb_cursor(scr_stat *scp, int at, int blink, int on, int flip)
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{
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video_adapter_t *adp;
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adp = scp->sc->adp;
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if (scp->curs_attr.height <= 0)
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/* the text cursor is disabled */
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return;
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if (on) {
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if (!blink) {
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scp->status |= VR_CURSOR_ON;
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vidd_set_hw_cursor(adp, at%scp->xsize, at/scp->xsize);
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} else if (++pxlblinkrate & 4) {
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pxlblinkrate = 0;
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scp->status ^= VR_CURSOR_ON;
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if(scp->status & VR_CURSOR_ON)
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vidd_set_hw_cursor(adp, at%scp->xsize,
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at/scp->xsize);
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else
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vidd_set_hw_cursor(adp, -1, -1);
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}
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} else {
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if (scp->status & VR_CURSOR_ON)
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vidd_set_hw_cursor(adp, at%scp->xsize, at/scp->xsize);
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scp->status &= ~VR_CURSOR_ON;
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}
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if (blink)
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scp->status |= VR_CURSOR_BLINK;
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else
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scp->status &= ~VR_CURSOR_BLINK;
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}
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#endif
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static void
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gfb_blink(scr_stat *scp, int at, int flip)
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{
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if (!(scp->status & VR_CURSOR_BLINK))
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return;
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if (!(++pxlblinkrate & 4))
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return;
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pxlblinkrate = 0;
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scp->status ^= VR_CURSOR_ON;
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gfb_cursor(scp, at, scp->status & VR_CURSOR_BLINK,
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scp->status & VR_CURSOR_ON, flip);
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}
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#ifndef SC_NO_CUTPASTE
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static void
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gfb_mouse(scr_stat *scp, int x, int y, int on)
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{
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if (on) {
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vidd_putm(scp->sc->adp, x, y, mouse_pointer,
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0xffffffff, 16, 8);
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} else {
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/* XXX: removal is incomplete for h/w cursors and borders. */
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}
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}
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#endif /* SC_NO_CUTPASTE */
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