pcdisplay_subr.c revision 1.16
1 /* $NetBSD: pcdisplay_subr.c,v 1.16 2000/06/08 07:01:19 cgd 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/ic/mc6845reg.h> 36 #include <dev/ic/pcdisplayvar.h> 37 38 #include <dev/wscons/wsdisplayvar.h> 39 40 void 41 pcdisplay_cursor_init(scr, existing) 42 struct pcdisplayscreen *scr; 43 int existing; 44 { 45 #ifdef PCDISPLAY_SOFTCURSOR 46 bus_space_tag_t memt; 47 bus_space_handle_t memh; 48 int off; 49 50 pcdisplay_6845_write(scr->hdl, curstart, 0x10); 51 pcdisplay_6845_write(scr->hdl, curend, 0x10); 52 53 if (existing) { 54 /* 55 * This is the first screen. At this point, scr->active is 56 * false and scr->mem is NULL (no backing store), so we 57 * can't use pcdisplay_cursor() to do this. 58 */ 59 memt = scr->hdl->ph_memt; 60 memh = scr->hdl->ph_memh; 61 off = (scr->vc_crow * scr->type->ncols + scr->vc_ccol) * 2 + 62 scr->dispoffset; 63 64 scr->cursortmp = bus_space_read_2(memt, memh, off); 65 bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700); 66 } else 67 scr->cursortmp = 0; 68 #endif 69 scr->cursoron = 1; 70 } 71 72 void 73 pcdisplay_cursor(id, on, row, col) 74 void *id; 75 int on, row, col; 76 { 77 #ifdef PCDISPLAY_SOFTCURSOR 78 struct pcdisplayscreen *scr = id; 79 bus_space_tag_t memt = scr->hdl->ph_memt; 80 bus_space_handle_t memh = scr->hdl->ph_memh; 81 int off; 82 83 /* Remove old cursor image */ 84 if (scr->cursoron) { 85 off = scr->vc_crow * scr->type->ncols + scr->vc_ccol; 86 if (scr->active) 87 bus_space_write_2(memt, memh, scr->dispoffset + off * 2, 88 scr->cursortmp); 89 else 90 scr->mem[off] = scr->cursortmp; 91 } 92 93 scr->vc_crow = row; 94 scr->vc_ccol = col; 95 96 if ((scr->cursoron = on) == 0) 97 return; 98 99 off = (scr->vc_crow * scr->type->ncols + scr->vc_ccol); 100 if (scr->active) { 101 off = off * 2 + scr->dispoffset; 102 scr->cursortmp = bus_space_read_2(memt, memh, off); 103 bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700); 104 } else { 105 scr->cursortmp = scr->mem[off]; 106 scr->mem[off] = scr->cursortmp ^ 0x7700; 107 } 108 #else /* PCDISPLAY_SOFTCURSOR */ 109 struct pcdisplayscreen *scr = id; 110 int pos; 111 112 scr->vc_crow = row; 113 scr->vc_ccol = col; 114 scr->cursoron = on; 115 116 if (scr->active) { 117 if (!on) 118 pos = 0x1010; 119 else 120 pos = scr->dispoffset / 2 121 + row * scr->type->ncols + col; 122 123 pcdisplay_6845_write(scr->hdl, cursorh, pos >> 8); 124 pcdisplay_6845_write(scr->hdl, cursorl, pos); 125 } 126 #endif /* PCDISPLAY_SOFTCURSOR */ 127 } 128 129 #if 0 130 unsigned int 131 pcdisplay_mapchar_simple(id, uni) 132 void *id; 133 int uni; 134 { 135 if (uni < 128) 136 return (uni); 137 138 return (1); /* XXX ??? smiley */ 139 } 140 #endif 141 142 void 143 pcdisplay_putchar(id, row, col, c, attr) 144 void *id; 145 int row, col; 146 u_int c; 147 long attr; 148 { 149 struct pcdisplayscreen *scr = id; 150 bus_space_tag_t memt = scr->hdl->ph_memt; 151 bus_space_handle_t memh = scr->hdl->ph_memh; 152 int off; 153 154 off = row * scr->type->ncols + col; 155 156 if (scr->active) 157 bus_space_write_2(memt, memh, scr->dispoffset + off * 2, 158 c | (attr << 8)); 159 else 160 scr->mem[off] = c | (attr << 8); 161 } 162 163 void 164 pcdisplay_copycols(id, row, srccol, dstcol, ncols) 165 void *id; 166 int row, srccol, dstcol, ncols; 167 { 168 struct pcdisplayscreen *scr = id; 169 bus_space_tag_t memt = scr->hdl->ph_memt; 170 bus_space_handle_t memh = scr->hdl->ph_memh; 171 bus_size_t srcoff, dstoff; 172 173 srcoff = dstoff = row * scr->type->ncols; 174 srcoff += srccol; 175 dstoff += dstcol; 176 177 if (scr->active) 178 bus_space_copy_region_2(memt, memh, 179 scr->dispoffset + srcoff * 2, 180 memh, scr->dispoffset + dstoff * 2, 181 ncols); 182 else 183 bcopy(&scr->mem[srcoff], &scr->mem[dstoff], ncols * 2); 184 } 185 186 void 187 pcdisplay_erasecols(id, row, startcol, ncols, fillattr) 188 void *id; 189 int row, startcol, ncols; 190 long fillattr; 191 { 192 struct pcdisplayscreen *scr = id; 193 bus_space_tag_t memt = scr->hdl->ph_memt; 194 bus_space_handle_t memh = scr->hdl->ph_memh; 195 bus_size_t off; 196 u_int16_t val; 197 int i; 198 199 off = row * scr->type->ncols + startcol; 200 201 val = (fillattr << 8) | ' '; 202 203 if (scr->active) 204 bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2, 205 val, ncols); 206 else 207 for (i = 0; i < ncols; i++) 208 scr->mem[off + i] = val; 209 } 210 211 void 212 pcdisplay_copyrows(id, srcrow, dstrow, nrows) 213 void *id; 214 int srcrow, dstrow, nrows; 215 { 216 struct pcdisplayscreen *scr = id; 217 bus_space_tag_t memt = scr->hdl->ph_memt; 218 bus_space_handle_t memh = scr->hdl->ph_memh; 219 int ncols = scr->type->ncols; 220 bus_size_t srcoff, dstoff; 221 222 srcoff = srcrow * ncols + 0; 223 dstoff = dstrow * ncols + 0; 224 225 if (scr->active) 226 bus_space_copy_region_2(memt, memh, 227 scr->dispoffset + srcoff * 2, 228 memh, scr->dispoffset + dstoff * 2, 229 nrows * ncols); 230 else 231 bcopy(&scr->mem[srcoff], &scr->mem[dstoff], 232 nrows * ncols * 2); 233 } 234 235 void 236 pcdisplay_eraserows(id, startrow, nrows, fillattr) 237 void *id; 238 int startrow, nrows; 239 long fillattr; 240 { 241 struct pcdisplayscreen *scr = id; 242 bus_space_tag_t memt = scr->hdl->ph_memt; 243 bus_space_handle_t memh = scr->hdl->ph_memh; 244 bus_size_t off, count; 245 u_int16_t val; 246 int i; 247 248 off = startrow * scr->type->ncols; 249 count = nrows * scr->type->ncols; 250 251 val = (fillattr << 8) | ' '; 252 253 if (scr->active) 254 bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2, 255 val, count); 256 else 257 for (i = 0; i < count; i++) 258 scr->mem[off + i] = val; 259 } 260
Indexes created Sat Oct 11 08:10:02 GMT 2025