pcdisplay_subr.c revision 1.15
1 /* $NetBSD: pcdisplay_subr.c,v 1.15 2000/01/26 01:23:32 ad 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_init(scr, existing) 45 struct pcdisplayscreen *scr; 46 int existing; 47 { 48 #ifdef PCDISPLAY_SOFTCURSOR 49 bus_space_tag_t memt; 50 bus_space_handle_t memh; 51 int off; 52 53 pcdisplay_6845_write(scr->hdl, curstart, 0x10); 54 pcdisplay_6845_write(scr->hdl, curend, 0x10); 55 56 if (existing) { 57 /* 58 * This is the first screen. At this point, scr->active is 59 * false and scr->mem is NULL (no backing store), so we 60 * can't use pcdisplay_cursor() to do this. 61 */ 62 memt = scr->hdl->ph_memt; 63 memh = scr->hdl->ph_memh; 64 off = (scr->vc_crow * scr->type->ncols + scr->vc_ccol) * 2 + 65 scr->dispoffset; 66 67 scr->cursortmp = bus_space_read_2(memt, memh, off); 68 bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700); 69 } else 70 scr->cursortmp = 0; 71 #endif 72 scr->cursoron = 1; 73 } 74 75 void 76 pcdisplay_cursor(id, on, row, col) 77 void *id; 78 int on, row, col; 79 { 80 #ifdef PCDISPLAY_SOFTCURSOR 81 struct pcdisplayscreen *scr = id; 82 bus_space_tag_t memt = scr->hdl->ph_memt; 83 bus_space_handle_t memh = scr->hdl->ph_memh; 84 int off; 85 86 /* Remove old cursor image */ 87 if (scr->cursoron) { 88 off = scr->vc_crow * scr->type->ncols + scr->vc_ccol; 89 if (scr->active) 90 bus_space_write_2(memt, memh, scr->dispoffset + off * 2, 91 scr->cursortmp); 92 else 93 scr->mem[off] = scr->cursortmp; 94 } 95 96 scr->vc_crow = row; 97 scr->vc_ccol = col; 98 99 if ((scr->cursoron = on) == 0) 100 return; 101 102 off = (scr->vc_crow * scr->type->ncols + scr->vc_ccol); 103 if (scr->active) { 104 off = off * 2 + scr->dispoffset; 105 scr->cursortmp = bus_space_read_2(memt, memh, off); 106 bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700); 107 } else { 108 scr->cursortmp = scr->mem[off]; 109 scr->mem[off] = scr->cursortmp ^ 0x7700; 110 } 111 #else /* PCDISPLAY_SOFTCURSOR */ 112 struct pcdisplayscreen *scr = id; 113 int pos; 114 115 scr->vc_crow = row; 116 scr->vc_ccol = col; 117 scr->cursoron = on; 118 119 if (scr->active) { 120 if (!on) 121 pos = 0x1010; 122 else 123 pos = scr->dispoffset / 2 124 + row * scr->type->ncols + col; 125 126 pcdisplay_6845_write(scr->hdl, cursorh, pos >> 8); 127 pcdisplay_6845_write(scr->hdl, cursorl, pos); 128 } 129 #endif /* PCDISPLAY_SOFTCURSOR */ 130 } 131 132 #if 0 133 unsigned int 134 pcdisplay_mapchar_simple(id, uni) 135 void *id; 136 int uni; 137 { 138 if (uni < 128) 139 return (uni); 140 141 return (1); /* XXX ??? smiley */ 142 } 143 #endif 144 145 void 146 pcdisplay_putchar(id, row, col, c, attr) 147 void *id; 148 int row, col; 149 u_int c; 150 long attr; 151 { 152 struct pcdisplayscreen *scr = id; 153 bus_space_tag_t memt = scr->hdl->ph_memt; 154 bus_space_handle_t memh = scr->hdl->ph_memh; 155 int off; 156 157 off = row * scr->type->ncols + col; 158 159 if (scr->active) 160 bus_space_write_2(memt, memh, scr->dispoffset + off * 2, 161 c | (attr << 8)); 162 else 163 scr->mem[off] = c | (attr << 8); 164 } 165 166 void 167 pcdisplay_copycols(id, row, srccol, dstcol, ncols) 168 void *id; 169 int row, srccol, dstcol, ncols; 170 { 171 struct pcdisplayscreen *scr = id; 172 bus_space_tag_t memt = scr->hdl->ph_memt; 173 bus_space_handle_t memh = scr->hdl->ph_memh; 174 bus_size_t srcoff, dstoff; 175 176 srcoff = dstoff = row * scr->type->ncols; 177 srcoff += srccol; 178 dstoff += dstcol; 179 180 if (scr->active) 181 bus_space_copy_region_2(memt, memh, 182 scr->dispoffset + srcoff * 2, 183 memh, scr->dispoffset + dstoff * 2, 184 ncols); 185 else 186 bcopy(&scr->mem[srcoff], &scr->mem[dstoff], ncols * 2); 187 } 188 189 void 190 pcdisplay_erasecols(id, row, startcol, ncols, fillattr) 191 void *id; 192 int row, startcol, ncols; 193 long fillattr; 194 { 195 struct pcdisplayscreen *scr = id; 196 bus_space_tag_t memt = scr->hdl->ph_memt; 197 bus_space_handle_t memh = scr->hdl->ph_memh; 198 bus_size_t off; 199 u_int16_t val; 200 int i; 201 202 off = row * scr->type->ncols + startcol; 203 204 val = (fillattr << 8) | ' '; 205 206 if (scr->active) 207 bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2, 208 val, ncols); 209 else 210 for (i = 0; i < ncols; i++) 211 scr->mem[off + i] = val; 212 } 213 214 void 215 pcdisplay_copyrows(id, srcrow, dstrow, nrows) 216 void *id; 217 int srcrow, dstrow, nrows; 218 { 219 struct pcdisplayscreen *scr = id; 220 bus_space_tag_t memt = scr->hdl->ph_memt; 221 bus_space_handle_t memh = scr->hdl->ph_memh; 222 int ncols = scr->type->ncols; 223 bus_size_t srcoff, dstoff; 224 225 srcoff = srcrow * ncols + 0; 226 dstoff = dstrow * ncols + 0; 227 228 if (scr->active) 229 bus_space_copy_region_2(memt, memh, 230 scr->dispoffset + srcoff * 2, 231 memh, scr->dispoffset + dstoff * 2, 232 nrows * ncols); 233 else 234 bcopy(&scr->mem[srcoff], &scr->mem[dstoff], 235 nrows * ncols * 2); 236 } 237 238 void 239 pcdisplay_eraserows(id, startrow, nrows, fillattr) 240 void *id; 241 int startrow, nrows; 242 long fillattr; 243 { 244 struct pcdisplayscreen *scr = id; 245 bus_space_tag_t memt = scr->hdl->ph_memt; 246 bus_space_handle_t memh = scr->hdl->ph_memh; 247 bus_size_t off, count; 248 u_int16_t val; 249 int i; 250 251 off = startrow * scr->type->ncols; 252 count = nrows * scr->type->ncols; 253 254 val = (fillattr << 8) | ' '; 255 256 if (scr->active) 257 bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2, 258 val, count); 259 else 260 for (i = 0; i < count; i++) 261 scr->mem[off + i] = val; 262 } 263
Indexes created Thu Sep 25 16:09:42 GMT 2025