pcdisplay_subr.c revision 1.32
1 /* $NetBSD: pcdisplay_subr.c,v 1.32 2006/04/15 17:48:23 jmmv 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/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: pcdisplay_subr.c,v 1.32 2006/04/15 17:48:23 jmmv Exp $"); 32 33 #include "opt_wsmsgattrs.h" /* for WSDISPLAY_CUSTOM_OUTPUT */ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/device.h> 38 #include <machine/bus.h> 39 40 #include <dev/ic/mc6845reg.h> 41 #include <dev/ic/pcdisplayvar.h> 42 #include <dev/wscons/wsconsio.h> 43 44 #include <dev/wscons/wsdisplayvar.h> 45 46 void 47 pcdisplay_cursor_init(struct pcdisplayscreen *scr, int existing) 48 { 49 #ifdef PCDISPLAY_SOFTCURSOR 50 bus_space_tag_t memt; 51 bus_space_handle_t memh; 52 int off; 53 54 pcdisplay_6845_write(scr->hdl, curstart, 0x10); 55 pcdisplay_6845_write(scr->hdl, curend, 0x10); 56 57 if (existing) { 58 /* 59 * This is the first screen. At this point, scr->mem is NULL 60 * (no backing store), so we can't use pcdisplay_cursor() to 61 * do this. 62 */ 63 memt = scr->hdl->ph_memt; 64 memh = scr->hdl->ph_memh; 65 off = (scr->cursorrow * scr->type->ncols + scr->cursorcol) * 2 66 + scr->dispoffset; 67 68 scr->cursortmp = bus_space_read_2(memt, memh, off); 69 bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700); 70 } else 71 scr->cursortmp = 0; 72 #else 73 /* 74 * Firmware might not have initialized the cursor shape. Make 75 * sure there's something we can see. 76 * Don't touch the hardware if this is not the first screen. 77 */ 78 if (existing) { 79 pcdisplay_6845_write(scr->hdl, curstart, 80 scr->type->fontheight - 2); 81 pcdisplay_6845_write(scr->hdl, curend, 82 scr->type->fontheight - 1); 83 } 84 #endif 85 scr->cursoron = 1; 86 } 87 88 void 89 pcdisplay_cursor(void *id, int on, int row, int col) 90 { 91 #ifdef PCDISPLAY_SOFTCURSOR 92 struct pcdisplayscreen *scr = id; 93 bus_space_tag_t memt = scr->hdl->ph_memt; 94 bus_space_handle_t memh = scr->hdl->ph_memh; 95 int off; 96 97 /* Remove old cursor image */ 98 if (scr->cursoron) { 99 off = scr->cursorrow * scr->type->ncols + scr->cursorcol; 100 if (scr->active) 101 bus_space_write_2(memt, memh, scr->dispoffset + off * 2, 102 scr->cursortmp); 103 else 104 scr->mem[off] = scr->cursortmp; 105 } 106 107 scr->cursorrow = row; 108 scr->cursorcol = col; 109 110 if ((scr->cursoron = on) == 0) 111 return; 112 113 off = (scr->cursorrow * scr->type->ncols + scr->cursorcol); 114 if (scr->active) { 115 off = off * 2 + scr->dispoffset; 116 scr->cursortmp = bus_space_read_2(memt, memh, off); 117 bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700); 118 } else { 119 scr->cursortmp = scr->mem[off]; 120 scr->mem[off] = scr->cursortmp ^ 0x7700; 121 } 122 #else /* PCDISPLAY_SOFTCURSOR */ 123 struct pcdisplayscreen *scr = id; 124 int pos; 125 126 scr->cursorrow = row; 127 scr->cursorcol = col; 128 scr->cursoron = on; 129 130 if (scr->active) { 131 if (!on) 132 pos = 0x3fff; 133 else 134 pos = scr->dispoffset / 2 135 + row * scr->type->ncols + col; 136 137 pcdisplay_6845_write(scr->hdl, cursorh, pos >> 8); 138 pcdisplay_6845_write(scr->hdl, cursorl, pos); 139 } 140 #endif /* PCDISPLAY_SOFTCURSOR */ 141 } 142 143 #if 0 144 unsigned int 145 pcdisplay_mapchar_simple(void *id, int uni) 146 { 147 if (uni < 128) 148 return (uni); 149 150 return (1); /* XXX ??? smiley */ 151 } 152 #endif 153 154 void 155 pcdisplay_putchar(void *id, int row, int col, unsigned int c, long attr) 156 { 157 struct pcdisplayscreen *scr = id; 158 bus_space_tag_t memt = scr->hdl->ph_memt; 159 bus_space_handle_t memh = scr->hdl->ph_memh; 160 int off; 161 162 off = row * scr->type->ncols + col; 163 164 if (scr->active) 165 bus_space_write_2(memt, memh, scr->dispoffset + off * 2, 166 c | (attr << 8)); 167 else 168 scr->mem[off] = c | (attr << 8); 169 170 scr->visibleoffset = scr->dispoffset; 171 } 172 173 void 174 pcdisplay_copycols(void *id, int row, int srccol, int dstcol, int ncols) 175 { 176 struct pcdisplayscreen *scr = id; 177 bus_space_tag_t memt = scr->hdl->ph_memt; 178 bus_space_handle_t memh = scr->hdl->ph_memh; 179 bus_size_t srcoff, dstoff; 180 181 srcoff = dstoff = row * scr->type->ncols; 182 srcoff += srccol; 183 dstoff += dstcol; 184 185 if (scr->active) 186 bus_space_copy_region_2(memt, memh, 187 scr->dispoffset + srcoff * 2, 188 memh, scr->dispoffset + dstoff * 2, 189 ncols); 190 else 191 memcpy(&scr->mem[dstoff], &scr->mem[srcoff], ncols * 2); 192 } 193 194 void 195 pcdisplay_erasecols(void *id, int row, int startcol, int ncols, long fillattr) 196 { 197 struct pcdisplayscreen *scr = id; 198 bus_space_tag_t memt = scr->hdl->ph_memt; 199 bus_space_handle_t memh = scr->hdl->ph_memh; 200 bus_size_t off; 201 u_int16_t val; 202 int i; 203 204 off = row * scr->type->ncols + startcol; 205 206 val = (fillattr << 8) | ' '; 207 208 if (scr->active) 209 bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2, 210 val, ncols); 211 else 212 for (i = 0; i < ncols; i++) 213 scr->mem[off + i] = val; 214 } 215 216 void 217 pcdisplay_copyrows(void *id, int srcrow, int dstrow, int 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 memcpy(&scr->mem[dstoff], &scr->mem[srcoff], 235 nrows * ncols * 2); 236 } 237 238 void 239 pcdisplay_eraserows(void *id, int startrow, int nrows, 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 u_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 } 260 261 #ifdef WSDISPLAY_CUSTOM_OUTPUT 262 void 263 pcdisplay_replaceattr(void *id, long oldattr, long newattr) 264 { 265 struct pcdisplayscreen *scr = id; 266 bus_space_tag_t memt = scr->hdl->ph_memt; 267 bus_space_handle_t memh = scr->hdl->ph_memh; 268 int off; 269 uint16_t chardata; 270 271 if (scr->active) 272 for (off = 0; off < scr->type->nrows * scr->type->ncols; 273 off++) { 274 chardata = bus_space_read_2(memt, memh, 275 scr->dispoffset + off * 2); 276 if ((long)(chardata >> 8) == oldattr) 277 bus_space_write_2(memt, memh, 278 scr->dispoffset + off * 2, 279 ((u_int16_t)(newattr << 8)) | 280 (chardata & 0x00FF)); 281 } 282 else 283 for (off = 0; off < scr->type->nrows * scr->type->ncols; 284 off++) { 285 chardata = scr->mem[off]; 286 if ((long)(chardata >> 8) == oldattr) 287 scr->mem[off] = ((u_int16_t)(newattr << 8)) | 288 (chardata & 0x00FF); 289 } 290 } 291 #endif /* WSDISPLAY_CUSTOM_OUTPUT */ 292 293 int 294 pcdisplay_getwschar(struct pcdisplayscreen *scr, struct wsdisplay_char *wschar) 295 { 296 int off; 297 uint16_t chardata; 298 uint8_t attrbyte; 299 300 KASSERT(scr != NULL && wschar != NULL); 301 302 off = wschar->row * scr->type->ncols + wschar->col; 303 if (off >= scr->type->ncols * scr->type->nrows) 304 return -1; 305 306 if (scr->active) 307 chardata = bus_space_read_2(scr->hdl->ph_memt, 308 scr->hdl->ph_memh, scr->dispoffset + off * 2); 309 else 310 chardata = scr->mem[off]; 311 312 wschar->letter = (chardata & 0x00FF); 313 wschar->flags = 0; 314 attrbyte = (chardata & 0xFF00) >> 8; 315 if ((attrbyte & 0x08)) wschar->flags |= WSDISPLAY_CHAR_BRIGHT; 316 if ((attrbyte & 0x80)) wschar->flags |= WSDISPLAY_CHAR_BLINK; 317 wschar->foreground = attrbyte & 0x07; 318 wschar->background = (attrbyte >> 4) & 0x07; 319 320 return 0; 321 } 322 323 int 324 pcdisplay_putwschar(struct pcdisplayscreen *scr, struct wsdisplay_char *wschar) 325 { 326 int off; 327 uint16_t chardata; 328 uint8_t attrbyte; 329 330 KASSERT(scr != NULL && wschar != NULL); 331 332 off = wschar->row * scr->type->ncols + wschar->col; 333 if (off >= (scr->type->ncols * scr->type->nrows)) 334 return -1; 335 336 attrbyte = wschar->background & 0x07; 337 if (wschar->flags & WSDISPLAY_CHAR_BLINK) attrbyte |= 0x08; 338 attrbyte <<= 4; 339 attrbyte |= wschar->foreground & 0x07; 340 if (wschar->flags & WSDISPLAY_CHAR_BRIGHT) attrbyte |= 0x08; 341 chardata = (attrbyte << 8) | wschar->letter; 342 343 if (scr->active) 344 bus_space_write_2(scr->hdl->ph_memt, scr->hdl->ph_memh, 345 scr->dispoffset + off * 2, chardata); 346 else 347 scr->mem[off] = chardata; 348 349 return 0; 350 } 351
Indexes created Thu Sep 25 16:09:42 GMT 2025