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pcdisplay_subr.c revision 1.4
      1 /* $NetBSD: pcdisplay_subr.c,v 1.4 1998/06/20 21:55:05 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 static u_char iso2ibm437[] =
     72 {
     73            0,     0,     0,     0,     0,     0,     0,     0,
     74            0,     0,     0,     0,     0,     0,     0,     0,
     75            0,     0,     0,     0,     0,     0,     0,     0,
     76            0,     0,     0,     0,     0,     0,     0,     0,
     77         0xff,  0xad,  0x9b,  0x9c,     0,  0x9d,     0,  0x40,
     78         0x6f,  0x63,  0x61,  0xae,     0,     0,     0,     0,
     79         0xf8,  0xf1,  0xfd,  0x33,     0,  0xe6,     0,  0xfa,
     80            0,  0x31,  0x6f,  0xaf,  0xac,  0xab,     0,  0xa8,
     81         0x41,  0x41,  0x41,  0x41,  0x8e,  0x8f,  0x92,  0x80,
     82         0x45,  0x90,  0x45,  0x45,  0x49,  0x49,  0x49,  0x49,
     83         0x81,  0xa5,  0x4f,  0x4f,  0x4f,  0x4f,  0x99,  0x4f,
     84         0x4f,  0x55,  0x55,  0x55,  0x9a,  0x59,     0,  0xe1,
     85         0x85,  0xa0,  0x83,  0x61,  0x84,  0x86,  0x91,  0x87,
     86         0x8a,  0x82,  0x88,  0x89,  0x8d,  0xa1,  0x8c,  0x8b,
     87            0,  0xa4,  0x95,  0xa2,  0x93,  0x6f,  0x94,  0x6f,
     88         0x6f,  0x97,  0xa3,  0x96,  0x81,  0x98,     0,     0
     89 };
     90 
     91 void
     92 pcdisplay_putchar(id, row, col, c, attr)
     93 	void *id;
     94 	int row, col;
     95 	u_int c;
     96 	long attr;
     97 {
     98 	struct pcdisplayscreen *scr = id;
     99 	bus_space_tag_t memt = scr->hdl->ph_memt;
    100 	bus_space_handle_t memh = scr->hdl->ph_memh;
    101 	u_char dc;
    102 	int off;
    103 
    104 	if (c < 128)
    105 		dc = c;
    106 	else if (c < 256)
    107 		dc = iso2ibm437[c - 128];
    108 	else
    109 		return;
    110 
    111 	off = row * scr->type->ncols + col;
    112 
    113 	if (scr->active)
    114 		bus_space_write_2(memt, memh, off * 2,
    115 				  dc | (attr << 8));
    116 	else
    117 		scr->mem[off] = dc | (attr << 8);
    118 }
    119 
    120 void
    121 pcdisplay_copycols(id, row, srccol, dstcol, ncols)
    122 	void *id;
    123 	int row, srccol, dstcol, ncols;
    124 {
    125 	struct pcdisplayscreen *scr = id;
    126 	bus_space_tag_t memt = scr->hdl->ph_memt;
    127 	bus_space_handle_t memh = scr->hdl->ph_memh;
    128 	bus_size_t srcoff, dstoff;
    129 
    130 	srcoff = dstoff = row * scr->type->ncols;
    131 	srcoff += srccol;
    132 	dstoff += dstcol;
    133 
    134 	if (scr->active)
    135 		bus_space_copy_region_2(memt, memh, srcoff * 2,
    136 					memh, dstoff * 2, ncols);
    137 	else
    138 		bcopy(&scr->mem[srcoff], &scr->mem[dstoff], ncols * 2);
    139 }
    140 
    141 void
    142 pcdisplay_erasecols(id, row, startcol, ncols, fillattr)
    143 	void *id;
    144 	int row, startcol, ncols;
    145 	long fillattr;
    146 {
    147 	struct pcdisplayscreen *scr = id;
    148 	bus_space_tag_t memt = scr->hdl->ph_memt;
    149 	bus_space_handle_t memh = scr->hdl->ph_memh;
    150 	bus_size_t off;
    151 	u_int16_t val;
    152 	int i;
    153 
    154 	off = row * scr->type->ncols + startcol;
    155 
    156 	val = (fillattr << 8) | ' ';
    157 
    158 	if (scr->active)
    159 		bus_space_set_region_2(memt, memh, off * 2, val, ncols);
    160 	else
    161 		for (i = 0; i < ncols; i++)
    162 			scr->mem[off + i] = val;
    163 }
    164 
    165 void
    166 pcdisplay_copyrows(id, srcrow, dstrow, nrows)
    167 	void *id;
    168 	int srcrow, dstrow, nrows;
    169 {
    170 	struct pcdisplayscreen *scr = id;
    171 	bus_space_tag_t memt = scr->hdl->ph_memt;
    172 	bus_space_handle_t memh = scr->hdl->ph_memh;
    173 	int ncols = scr->type->ncols;
    174 	bus_size_t srcoff, dstoff;
    175 
    176 	srcoff = srcrow * ncols + 0;
    177 	dstoff = dstrow * ncols + 0;
    178 
    179 	if (scr->active)
    180 		bus_space_copy_region_2(memt, memh, srcoff * 2,
    181 					memh, dstoff * 2, nrows * ncols);
    182 	else
    183 		bcopy(&scr->mem[srcoff], &scr->mem[dstoff],
    184 		      nrows * ncols * 2);
    185 }
    186 
    187 void
    188 pcdisplay_eraserows(id, startrow, nrows, fillattr)
    189 	void *id;
    190 	int startrow, nrows;
    191 	long fillattr;
    192 {
    193 	struct pcdisplayscreen *scr = id;
    194 	bus_space_tag_t memt = scr->hdl->ph_memt;
    195 	bus_space_handle_t memh = scr->hdl->ph_memh;
    196 	bus_size_t off, count;
    197 	u_int16_t val;
    198 	int i;
    199 
    200 	off = startrow * scr->type->ncols;
    201 	count = nrows * scr->type->ncols;
    202 
    203 	val = (fillattr << 8) | ' ';
    204 
    205 	if (scr->active)
    206 		bus_space_set_region_2(memt, memh, off * 2, val, count);
    207 	else
    208 		for (i = 0; i < count; i++)
    209 			scr->mem[off + i] = val;
    210 }
    211