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pcdisplay_subr.c revision 1.2 
      1 /* $NetBSD: pcdisplay_subr.c,v 1.2 1998/06/17 20:44:16 drochner Exp $ */
      2 
      3 /*
      4  * Copyright (c) 1995, 1996 Carnegie-Mellon University.
      5  * All rights reserved.
      6  *
      7  * Author: Chris G. Demetriou
      8  *
      9  * Permission to use, copy, modify and distribute this software and
     10  * its documentation is hereby granted, provided that both the copyright
     11  * notice and this permission notice appear in all copies of the
     12  * software, derivative works or modified versions, and any portions
     13  * thereof, and that both notices appear in supporting documentation.
     14  *
     15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  *
     19  * Carnegie Mellon requests users of this software to return to
     20  *
     21  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  *  School of Computer Science
     23  *  Carnegie Mellon University
     24  *  Pittsburgh PA 15213-3890
     25  *
     26  * any improvements or extensions that they make and grant Carnegie the
     27  * rights to redistribute these changes.
     28  */
     29 
     30 #include <sys/param.h>
     31 #include <sys/systm.h>
     32 #include <sys/device.h>
     33 #include <machine/bus.h>
     34 
     35 #include <dev/isa/isavar.h>
     36 #include <dev/isa/isareg.h>
     37 
     38 #include <dev/ic/mc6845reg.h>
     39 #include <dev/ic/pcdisplayvar.h>
     40 
     41 #include <dev/wscons/wsdisplayvar.h>
     42 
     43 void
     44 pcdisplay_cursor(id, on, row, col)
     45 	void *id;
     46 	int on, row, col;
     47 {
     48 	struct pcdisplayscreen *scr = id;
     49 	int pos;
     50 
     51 #if 0
     52 	printf("pcdisplay_cursor: %d %d\n", row, col);
     53 #endif
     54 	scr->vc_crow = row;
     55 	scr->vc_ccol = col;
     56 	scr->cursoron = on;
     57 
     58 	if (scr->active) {
     59 		if (!on) {
     60 			/* XXX disable cursor how??? */
     61 			row = col = -1;
     62 		}
     63 
     64 		pos = row * scr->type->ncols + col;
     65 
     66 		pcdisplay_6845_write(scr->hdl, cursorh, pos >> 8);
     67 		pcdisplay_6845_write(scr->hdl, cursorl, pos);
     68 	}
     69 }
     70 
     71 void
     72 pcdisplay_putstr(id, row, col, cp, len, attr)
     73 	void *id;
     74 	int row, col;
     75 	char *cp;
     76 	int len;
     77 	long attr;
     78 {
     79 	struct pcdisplayscreen *scr = id;
     80 	bus_space_tag_t memt = scr->hdl->ph_memt;
     81 	bus_space_handle_t memh = scr->hdl->ph_memh;
     82 	int i, off;
     83 
     84 	off = row * scr->type->ncols + col;
     85 
     86 	if (scr->active) {
     87 		off *= 2;
     88 
     89 		for (i = 0; i < len; i++, cp++, off += 2)
     90 			bus_space_write_2(memt, memh, off,
     91 					  (attr << 8) | (u_char)*cp);
     92 	} else {
     93 		u_int16_t *m = &scr->mem[off];
     94 
     95 		for (i = 0; i < len; i++, cp++)
     96 			*m++ = *cp | (attr << 8);
     97 	}
     98 }
     99 
    100 void
    101 pcdisplay_copycols(id, row, srccol, dstcol, ncols)
    102 	void *id;
    103 	int row, srccol, dstcol, ncols;
    104 {
    105 	struct pcdisplayscreen *scr = id;
    106 	bus_space_tag_t memt = scr->hdl->ph_memt;
    107 	bus_space_handle_t memh = scr->hdl->ph_memh;
    108 	bus_size_t srcoff, dstoff;
    109 
    110 	srcoff = dstoff = row * scr->type->ncols;
    111 	srcoff += srccol;
    112 	dstoff += dstcol;
    113 
    114 	if (scr->active)
    115 		bus_space_copy_region_2(memt, memh, srcoff * 2,
    116 					memh, dstoff * 2, ncols);
    117 	else
    118 		bcopy(&scr->mem[srcoff], &scr->mem[dstoff], ncols * 2);
    119 }
    120 
    121 void
    122 pcdisplay_erasecols(id, row, startcol, ncols, fillattr)
    123 	void *id;
    124 	int row, startcol, ncols;
    125 	long fillattr;
    126 {
    127 	struct pcdisplayscreen *scr = id;
    128 	bus_space_tag_t memt = scr->hdl->ph_memt;
    129 	bus_space_handle_t memh = scr->hdl->ph_memh;
    130 	bus_size_t off;
    131 	u_int16_t val;
    132 	int i;
    133 
    134 	off = row * scr->type->ncols + startcol;
    135 
    136 	val = (fillattr << 8) | ' ';
    137 
    138 	if (scr->active)
    139 		bus_space_set_region_2(memt, memh, off * 2, val, ncols);
    140 	else
    141 		for (i = 0; i < ncols; i++)
    142 			scr->mem[off + i] = val;
    143 }
    144 
    145 void
    146 pcdisplay_copyrows(id, srcrow, dstrow, nrows)
    147 	void *id;
    148 	int srcrow, dstrow, nrows;
    149 {
    150 	struct pcdisplayscreen *scr = id;
    151 	bus_space_tag_t memt = scr->hdl->ph_memt;
    152 	bus_space_handle_t memh = scr->hdl->ph_memh;
    153 	int ncols = scr->type->ncols;
    154 	bus_size_t srcoff, dstoff;
    155 
    156 	srcoff = srcrow * ncols + 0;
    157 	dstoff = dstrow * ncols + 0;
    158 
    159 	if (scr->active)
    160 		bus_space_copy_region_2(memt, memh, srcoff * 2,
    161 					memh, dstoff * 2, nrows * ncols);
    162 	else
    163 		bcopy(&scr->mem[srcoff], &scr->mem[dstoff],
    164 		      nrows * ncols * 2);
    165 }
    166 
    167 void
    168 pcdisplay_eraserows(id, startrow, nrows, fillattr)
    169 	void *id;
    170 	int startrow, nrows;
    171 	long fillattr;
    172 {
    173 	struct pcdisplayscreen *scr = id;
    174 	bus_space_tag_t memt = scr->hdl->ph_memt;
    175 	bus_space_handle_t memh = scr->hdl->ph_memh;
    176 	bus_size_t off, count;
    177 	u_int16_t val;
    178 	int i;
    179 
    180 	off = startrow * scr->type->ncols;
    181 	count = nrows * scr->type->ncols;
    182 
    183 	val = (fillattr << 8) | ' ';
    184 
    185 	if (scr->active)
    186 		bus_space_set_region_2(memt, memh, off * 2, val, count);
    187 	else
    188 		for (i = 0; i < count; i++)
    189 			scr->mem[off + i] = val;
    190 }
    191