| 1 | /* $NetBSD: pcdisplay_subr.c,v 1.35 2010/10/19 22:27:19 jmcneill 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@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 1.35 2010/10/19 22:27:19 jmcneill 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 <sys/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 | /* Disable the hardware cursor */ |
| 55 | pcdisplay_6845_write(scr->hdl, curstart, 0x20); |
| 56 | pcdisplay_6845_write(scr->hdl, curend, 0x00); |
| 57 | |
| 58 | if (existing) { |
| 59 | /* |
| 60 | * This is the first screen. At this point, scr->mem is NULL |
| 61 | * (no backing store), so we can't use pcdisplay_cursor() to |
| 62 | * do this. |
| 63 | */ |
| 64 | memt = scr->hdl->ph_memt; |
| 65 | memh = scr->hdl->ph_memh; |
| 66 | off = (scr->cursorrow * scr->type->ncols + scr->cursorcol) * 2 |
| 67 | + scr->dispoffset; |
| 68 | |
| 69 | scr->cursortmp = bus_space_read_2(memt, memh, off); |
| 70 | bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700); |
| 71 | } else |
| 72 | scr->cursortmp = 0; |
| 73 | #else |
| 74 | /* |
| 75 | * Firmware might not have initialized the cursor shape. Make |
| 76 | * sure there's something we can see. |
| 77 | * Don't touch the hardware if this is not the first screen. |
| 78 | */ |
| 79 | if (existing) { |
| 80 | pcdisplay_6845_write(scr->hdl, curstart, |
| 81 | scr->type->fontheight - 2); |
| 82 | pcdisplay_6845_write(scr->hdl, curend, |
| 83 | scr->type->fontheight - 1); |
| 84 | } |
| 85 | #endif |
| 86 | scr->cursoron = 1; |
| 87 | } |
| 88 | |
| 89 | void |
| 90 | pcdisplay_cursor(void *id, int on, int row, int col) |
| 91 | { |
| 92 | #ifdef PCDISPLAY_SOFTCURSOR |
| 93 | struct pcdisplayscreen *scr = id; |
| 94 | bus_space_tag_t memt = scr->hdl->ph_memt; |
| 95 | bus_space_handle_t memh = scr->hdl->ph_memh; |
| 96 | int off; |
| 97 | |
| 98 | /* Remove old cursor image */ |
| 99 | if (scr->cursoron) { |
| 100 | off = scr->cursorrow * scr->type->ncols + scr->cursorcol; |
| 101 | if (scr->active) |
| 102 | bus_space_write_2(memt, memh, scr->dispoffset + off * 2, |
| 103 | scr->cursortmp); |
| 104 | else |
| 105 | scr->mem[off] = scr->cursortmp; |
| 106 | } |
| 107 | |
| 108 | scr->cursorrow = row; |
| 109 | scr->cursorcol = col; |
| 110 | |
| 111 | if ((scr->cursoron = on) == 0) |
| 112 | return; |
| 113 | |
| 114 | off = (scr->cursorrow * scr->type->ncols + scr->cursorcol); |
| 115 | if (scr->active) { |
| 116 | off = off * 2 + scr->dispoffset; |
| 117 | scr->cursortmp = bus_space_read_2(memt, memh, off); |
| 118 | bus_space_write_2(memt, memh, off, scr->cursortmp ^ 0x7700); |
| 119 | } else { |
| 120 | scr->cursortmp = scr->mem[off]; |
| 121 | scr->mem[off] = scr->cursortmp ^ 0x7700; |
| 122 | } |
| 123 | #else /* PCDISPLAY_SOFTCURSOR */ |
| 124 | struct pcdisplayscreen *scr = id; |
| 125 | int pos; |
| 126 | |
| 127 | scr->cursorrow = row; |
| 128 | scr->cursorcol = col; |
| 129 | scr->cursoron = on; |
| 130 | |
| 131 | if (scr->active) { |
| 132 | if (!on) |
| 133 | pos = 0x3fff; |
| 134 | else |
| 135 | pos = scr->dispoffset / 2 |
| 136 | + row * scr->type->ncols + col; |
| 137 | |
| 138 | pcdisplay_6845_write(scr->hdl, cursorh, pos >> 8); |
| 139 | pcdisplay_6845_write(scr->hdl, cursorl, pos); |
| 140 | } |
| 141 | #endif /* PCDISPLAY_SOFTCURSOR */ |
| 142 | } |
| 143 | |
| 144 | #if 0 |
| 145 | unsigned int |
| 146 | pcdisplay_mapchar_simple(void *id, int uni) |
| 147 | { |
| 148 | if (uni < 128) |
| 149 | return (uni); |
| 150 | |
| 151 | return (1); /* XXX ??? smiley */ |
| 152 | } |
| 153 | #endif |
| 154 | |
| 155 | void |
| 156 | pcdisplay_putchar(void *id, int row, int col, unsigned int c, long attr) |
| 157 | { |
| 158 | struct pcdisplayscreen *scr = id; |
| 159 | bus_space_tag_t memt = scr->hdl->ph_memt; |
| 160 | bus_space_handle_t memh = scr->hdl->ph_memh; |
| 161 | size_t off; |
| 162 | |
| 163 | off = row * scr->type->ncols + col; |
| 164 | |
| 165 | /* check for bogus row and column sizes */ |
| 166 | if (__predict_false(off >= (scr->type->ncols * scr->type->nrows))) |
| 167 | return; |
| 168 | |
| 169 | if (scr->active) |
| 170 | bus_space_write_2(memt, memh, scr->dispoffset + off * 2, |
| 171 | c | (attr << 8)); |
| 172 | else |
| 173 | scr->mem[off] = c | (attr << 8); |
| 174 | |
| 175 | scr->visibleoffset = scr->dispoffset; |
| 176 | } |
| 177 | |
| 178 | void |
| 179 | pcdisplay_copycols(void *id, int row, int srccol, int dstcol, int ncols) |
| 180 | { |
| 181 | struct pcdisplayscreen *scr = id; |
| 182 | bus_space_tag_t memt = scr->hdl->ph_memt; |
| 183 | bus_space_handle_t memh = scr->hdl->ph_memh; |
| 184 | bus_size_t srcoff, dstoff; |
| 185 | |
| 186 | srcoff = dstoff = row * scr->type->ncols; |
| 187 | srcoff += srccol; |
| 188 | dstoff += dstcol; |
| 189 | |
| 190 | if (scr->active) |
| 191 | bus_space_copy_region_2(memt, memh, |
| 192 | scr->dispoffset + srcoff * 2, |
| 193 | memh, scr->dispoffset + dstoff * 2, |
| 194 | ncols); |
| 195 | else |
| 196 | memcpy(&scr->mem[dstoff], &scr->mem[srcoff], ncols * 2); |
| 197 | } |
| 198 | |
| 199 | void |
| 200 | pcdisplay_erasecols(void *id, int row, int startcol, int ncols, long fillattr) |
| 201 | { |
| 202 | struct pcdisplayscreen *scr = id; |
| 203 | bus_space_tag_t memt = scr->hdl->ph_memt; |
| 204 | bus_space_handle_t memh = scr->hdl->ph_memh; |
| 205 | bus_size_t off; |
| 206 | u_int16_t val; |
| 207 | int i; |
| 208 | |
| 209 | off = row * scr->type->ncols + startcol; |
| 210 | |
| 211 | val = (fillattr << 8) | ' '; |
| 212 | |
| 213 | if (scr->active) |
| 214 | bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2, |
| 215 | val, ncols); |
| 216 | else |
| 217 | for (i = 0; i < ncols; i++) |
| 218 | scr->mem[off + i] = val; |
| 219 | } |
| 220 | |
| 221 | void |
| 222 | pcdisplay_copyrows(void *id, int srcrow, int dstrow, int nrows) |
| 223 | { |
| 224 | struct pcdisplayscreen *scr = id; |
| 225 | bus_space_tag_t memt = scr->hdl->ph_memt; |
| 226 | bus_space_handle_t memh = scr->hdl->ph_memh; |
| 227 | int ncols = scr->type->ncols; |
| 228 | bus_size_t srcoff, dstoff; |
| 229 | |
| 230 | srcoff = srcrow * ncols + 0; |
| 231 | dstoff = dstrow * ncols + 0; |
| 232 | |
| 233 | if (scr->active) |
| 234 | bus_space_copy_region_2(memt, memh, |
| 235 | scr->dispoffset + srcoff * 2, |
| 236 | memh, scr->dispoffset + dstoff * 2, |
| 237 | nrows * ncols); |
| 238 | else |
| 239 | memcpy(&scr->mem[dstoff], &scr->mem[srcoff], |
| 240 | nrows * ncols * 2); |
| 241 | } |
| 242 | |
| 243 | void |
| 244 | pcdisplay_eraserows(void *id, int startrow, int nrows, long fillattr) |
| 245 | { |
| 246 | struct pcdisplayscreen *scr = id; |
| 247 | bus_space_tag_t memt = scr->hdl->ph_memt; |
| 248 | bus_space_handle_t memh = scr->hdl->ph_memh; |
| 249 | bus_size_t off, count; |
| 250 | u_int16_t val; |
| 251 | u_int i; |
| 252 | |
| 253 | off = startrow * scr->type->ncols; |
| 254 | count = nrows * scr->type->ncols; |
| 255 | |
| 256 | val = (fillattr << 8) | ' '; |
| 257 | |
| 258 | if (scr->active) |
| 259 | bus_space_set_region_2(memt, memh, scr->dispoffset + off * 2, |
| 260 | val, count); |
| 261 | else |
| 262 | for (i = 0; i < count; i++) |
| 263 | scr->mem[off + i] = val; |
| 264 | } |
| 265 | |
| 266 | #ifdef WSDISPLAY_CUSTOM_OUTPUT |
| 267 | void |
| 268 | pcdisplay_replaceattr(void *id, long oldattr, long newattr) |
| 269 | { |
| 270 | struct pcdisplayscreen *scr = id; |
| 271 | bus_space_tag_t memt = scr->hdl->ph_memt; |
| 272 | bus_space_handle_t memh = scr->hdl->ph_memh; |
| 273 | int off; |
| 274 | uint16_t chardata; |
| 275 | |
| 276 | if (scr->active) |
| 277 | for (off = 0; off < scr->type->nrows * scr->type->ncols; |
| 278 | off++) { |
| 279 | chardata = bus_space_read_2(memt, memh, |
| 280 | scr->dispoffset + off * 2); |
| 281 | if ((long)(chardata >> 8) == oldattr) |
| 282 | bus_space_write_2(memt, memh, |
| 283 | scr->dispoffset + off * 2, |
| 284 | ((u_int16_t)(newattr << 8)) | |
| 285 | (chardata & 0x00FF)); |
| 286 | } |
| 287 | else |
| 288 | for (off = 0; off < scr->type->nrows * scr->type->ncols; |
| 289 | off++) { |
| 290 | chardata = scr->mem[off]; |
| 291 | if ((long)(chardata >> 8) == oldattr) |
| 292 | scr->mem[off] = ((u_int16_t)(newattr << 8)) | |
| 293 | (chardata & 0x00FF); |
| 294 | } |
| 295 | } |
| 296 | #endif /* WSDISPLAY_CUSTOM_OUTPUT */ |
| 297 | |
| 298 | int |
| 299 | pcdisplay_getwschar(struct pcdisplayscreen *scr, struct wsdisplay_char *wschar) |
| 300 | { |
| 301 | size_t off; |
| 302 | uint16_t chardata; |
| 303 | uint8_t attrbyte; |
| 304 | |
| 305 | KASSERT(scr != NULL && wschar != NULL); |
| 306 | |
| 307 | off = wschar->row * scr->type->ncols + wschar->col; |
| 308 | if (off >= scr->type->ncols * scr->type->nrows) |
| 309 | return -1; |
| 310 | |
| 311 | if (scr->active) |
| 312 | chardata = bus_space_read_2(scr->hdl->ph_memt, |
| 313 | scr->hdl->ph_memh, scr->dispoffset + off * 2); |
| 314 | else |
| 315 | chardata = scr->mem[off]; |
| 316 | |
| 317 | wschar->letter = (chardata & 0x00FF); |
| 318 | wschar->flags = 0; |
| 319 | attrbyte = (chardata & 0xFF00) >> 8; |
| 320 | if ((attrbyte & 0x08)) wschar->flags |= WSDISPLAY_CHAR_BRIGHT; |
| 321 | if ((attrbyte & 0x80)) wschar->flags |= WSDISPLAY_CHAR_BLINK; |
| 322 | wschar->foreground = attrbyte & 0x07; |
| 323 | wschar->background = (attrbyte >> 4) & 0x07; |
| 324 | |
| 325 | return 0; |
| 326 | } |
| 327 | |
| 328 | int |
| 329 | pcdisplay_putwschar(struct pcdisplayscreen *scr, struct wsdisplay_char *wschar) |
| 330 | { |
| 331 | size_t off; |
| 332 | uint16_t chardata; |
| 333 | uint8_t attrbyte; |
| 334 | |
| 335 | KASSERT(scr != NULL && wschar != NULL); |
| 336 | |
| 337 | off = wschar->row * scr->type->ncols + wschar->col; |
| 338 | if (off >= (scr->type->ncols * scr->type->nrows)) |
| 339 | return -1; |
| 340 | |
| 341 | attrbyte = wschar->background & 0x07; |
| 342 | if (wschar->flags & WSDISPLAY_CHAR_BLINK) attrbyte |= 0x08; |
| 343 | attrbyte <<= 4; |
| 344 | attrbyte |= wschar->foreground & 0x07; |
| 345 | if (wschar->flags & WSDISPLAY_CHAR_BRIGHT) attrbyte |= 0x08; |
| 346 | chardata = (attrbyte << 8) | wschar->letter; |
| 347 | |
| 348 | if (scr->active) |
| 349 | bus_space_write_2(scr->hdl->ph_memt, scr->hdl->ph_memh, |
| 350 | scr->dispoffset + off * 2, chardata); |
| 351 | else |
| 352 | scr->mem[off] = chardata; |
| 353 | |
| 354 | return 0; |
| 355 | } |
| 356 | |