275 lines
6.5 KiB
C
275 lines
6.5 KiB
C
/* $NetBSD: pcdisplay_subr.c,v 1.20 2001/11/13 13:14:43 lukem Exp $ */
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/*
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* Copyright (c) 1995, 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: pcdisplay_subr.c,v 1.20 2001/11/13 13:14:43 lukem Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <machine/bus.h>
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#include <dev/ic/mc6845reg.h>
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#include <dev/ic/pcdisplayvar.h>
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#include <dev/wscons/wsdisplayvar.h>
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void
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pcdisplay_cursor_init(scr, existing)
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struct pcdisplayscreen *scr;
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int existing;
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{
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#ifdef PCDISPLAY_SOFTCURSOR
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bus_space_tag_t memt;
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bus_space_handle_t memh;
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int off;
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pcdisplay_6845_write(scr->hdl, curstart, 0x10);
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pcdisplay_6845_write(scr->hdl, curend, 0x10);
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if (existing) {
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/*
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* This is the first screen. At this point, scr->mem is NULL
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* (no backing store), so we can't use pcdisplay_cursor() to
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* do this.
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*/
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memt = scr->hdl->ph_memt;
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memh = scr->hdl->ph_memh;
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off = (scr->vc_crow * scr->type->ncols + scr->vc_ccol) * 2 +
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scr->dispoffset;
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scr->cursortmp = bus_space_read_2(memt, memh, off);
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bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700);
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} else
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scr->cursortmp = 0;
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#else
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/*
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* Firmware might not have initialized the cursor shape. Make
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* sure there's something we can see.
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* Don't touch the hardware if this is not the first screen.
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*/
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if (existing) {
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pcdisplay_6845_write(scr->hdl, curstart,
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scr->type->fontheight - 2);
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pcdisplay_6845_write(scr->hdl, curend,
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scr->type->fontheight - 1);
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}
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#endif
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scr->cursoron = 1;
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}
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void
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pcdisplay_cursor(id, on, row, col)
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void *id;
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int on, row, col;
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{
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#ifdef PCDISPLAY_SOFTCURSOR
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struct pcdisplayscreen *scr = id;
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bus_space_tag_t memt = scr->hdl->ph_memt;
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bus_space_handle_t memh = scr->hdl->ph_memh;
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int off;
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/* Remove old cursor image */
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if (scr->cursoron) {
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off = scr->vc_crow * scr->type->ncols + scr->vc_ccol;
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if (scr->active)
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bus_space_write_2(memt, memh, scr->dispoffset + off * 2,
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scr->cursortmp);
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else
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scr->mem[off] = scr->cursortmp;
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}
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scr->vc_crow = row;
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scr->vc_ccol = col;
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if ((scr->cursoron = on) == 0)
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return;
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off = (scr->vc_crow * scr->type->ncols + scr->vc_ccol);
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if (scr->active) {
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off = off * 2 + scr->dispoffset;
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scr->cursortmp = bus_space_read_2(memt, memh, off);
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bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700);
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} else {
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scr->cursortmp = scr->mem[off];
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scr->mem[off] = scr->cursortmp ^ 0x7700;
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}
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#else /* PCDISPLAY_SOFTCURSOR */
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struct pcdisplayscreen *scr = id;
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int pos;
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scr->vc_crow = row;
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scr->vc_ccol = col;
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scr->cursoron = on;
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if (scr->active) {
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if (!on)
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pos = 0x3fff;
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else
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pos = scr->dispoffset / 2
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+ row * scr->type->ncols + col;
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pcdisplay_6845_write(scr->hdl, cursorh, pos >> 8);
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pcdisplay_6845_write(scr->hdl, cursorl, pos);
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}
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#endif /* PCDISPLAY_SOFTCURSOR */
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}
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#if 0
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unsigned int
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pcdisplay_mapchar_simple(id, uni)
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void *id;
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int uni;
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{
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if (uni < 128)
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return (uni);
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return (1); /* XXX ??? smiley */
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}
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#endif
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void
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pcdisplay_putchar(id, row, col, c, attr)
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void *id;
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int row, col;
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u_int c;
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long attr;
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{
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struct pcdisplayscreen *scr = id;
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bus_space_tag_t memt = scr->hdl->ph_memt;
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bus_space_handle_t memh = scr->hdl->ph_memh;
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int off;
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off = row * scr->type->ncols + col;
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if (scr->active)
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bus_space_write_2(memt, memh, scr->dispoffset + off * 2,
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c | (attr << 8));
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else
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scr->mem[off] = c | (attr << 8);
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}
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void
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pcdisplay_copycols(id, row, srccol, dstcol, ncols)
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void *id;
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int row, srccol, dstcol, ncols;
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{
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struct pcdisplayscreen *scr = id;
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bus_space_tag_t memt = scr->hdl->ph_memt;
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bus_space_handle_t memh = scr->hdl->ph_memh;
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bus_size_t srcoff, dstoff;
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srcoff = dstoff = row * scr->type->ncols;
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srcoff += srccol;
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dstoff += dstcol;
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if (scr->active)
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bus_space_copy_region_2(memt, memh,
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scr->dispoffset + srcoff * 2,
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memh, scr->dispoffset + dstoff * 2,
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ncols);
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else
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memcpy(&scr->mem[dstoff], &scr->mem[srcoff], ncols * 2);
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}
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void
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pcdisplay_erasecols(id, row, startcol, ncols, fillattr)
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void *id;
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int row, startcol, ncols;
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long fillattr;
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{
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struct pcdisplayscreen *scr = id;
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bus_space_tag_t memt = scr->hdl->ph_memt;
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bus_space_handle_t memh = scr->hdl->ph_memh;
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bus_size_t off;
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u_int16_t val;
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int i;
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off = row * scr->type->ncols + startcol;
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val = (fillattr << 8) | ' ';
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if (scr->active)
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bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2,
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val, ncols);
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else
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for (i = 0; i < ncols; i++)
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scr->mem[off + i] = val;
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}
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void
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pcdisplay_copyrows(id, srcrow, dstrow, nrows)
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void *id;
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int srcrow, dstrow, nrows;
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{
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struct pcdisplayscreen *scr = id;
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bus_space_tag_t memt = scr->hdl->ph_memt;
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bus_space_handle_t memh = scr->hdl->ph_memh;
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int ncols = scr->type->ncols;
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bus_size_t srcoff, dstoff;
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srcoff = srcrow * ncols + 0;
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dstoff = dstrow * ncols + 0;
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if (scr->active)
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bus_space_copy_region_2(memt, memh,
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scr->dispoffset + srcoff * 2,
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memh, scr->dispoffset + dstoff * 2,
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nrows * ncols);
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else
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memcpy(&scr->mem[dstoff], &scr->mem[srcoff],
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nrows * ncols * 2);
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}
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void
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pcdisplay_eraserows(id, startrow, nrows, fillattr)
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void *id;
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int startrow, nrows;
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long fillattr;
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{
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struct pcdisplayscreen *scr = id;
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bus_space_tag_t memt = scr->hdl->ph_memt;
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bus_space_handle_t memh = scr->hdl->ph_memh;
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bus_size_t off, count;
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u_int16_t val;
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int i;
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off = startrow * scr->type->ncols;
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count = nrows * scr->type->ncols;
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val = (fillattr << 8) | ' ';
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if (scr->active)
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bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2,
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val, count);
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else
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for (i = 0; i < count; i++)
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scr->mem[off + i] = val;
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}
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