1 /* $Id: light.c,v 1.11 2023/12/13 20:53:14 andvar Exp $ */ 2 3 /* 4 * Copyright (c) 2006 Stephen M. Rumble 5 * Copyright (c) 2003 Ilpo Ruotsalainen 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * <<Id: LICENSE_GC,v 1.1 2001/10/01 23:24:05 cgd Exp>> 31 */ 32 33 /* 34 * SGI "Light" graphics, a.k.a. "Entry", "Starter", "LG1", and "LG2". 35 * 36 * 1024x768 8bpp at 60Hz. 37 * 38 * This driver supports the boards found in Indigo R3k and R4k machines. 39 * There is a Crimson variant, but the register offsets differ significantly. 40 * 41 * Light's REX chip is the precursor of the REX3 found in "newport", hence 42 * much similarity exists. 43 */ 44 45 #include <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: light.c,v 1.11 2023/12/13 20:53:14 andvar Exp $"); 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/device.h> 51 #include <sys/kmem.h> 52 53 #include <machine/sysconf.h> 54 55 #include <dev/wscons/wsconsio.h> 56 #include <dev/wscons/wsdisplayvar.h> 57 #include <dev/wsfont/wsfont.h> 58 59 #include <sgimips/gio/giovar.h> 60 #include <sgimips/gio/lightvar.h> 61 #include <sgimips/gio/lightreg.h> 62 63 struct light_softc { 64 struct light_devconfig *sc_dc; 65 }; 66 67 struct light_devconfig { 68 uint32_t dc_addr; 69 70 bus_space_tag_t dc_st; 71 bus_space_handle_t dc_sh; 72 73 int dc_boardrev; 74 int dc_font; 75 struct wsdisplay_font *dc_fontdata; 76 }; 77 78 /* always 1024x768x8 */ 79 #define LIGHT_XRES 1024 80 #define LIGHT_YRES 768 81 #define LIGHT_DEPTH 8 82 83 static int light_match(device_t, cfdata_t, void *); 84 static void light_attach(device_t, device_t, void *); 85 86 CFATTACH_DECL_NEW(light, sizeof(struct light_softc), light_match, light_attach, 87 NULL, NULL); 88 89 /* wsdisplay_emulops */ 90 static void light_cursor(void *, int, int, int); 91 static int light_mapchar(void *, int, unsigned int *); 92 static void light_putchar(void *, int, int, u_int, long); 93 static void light_copycols(void *, int, int, int, int); 94 static void light_erasecols(void *, int, int, int, long); 95 static void light_copyrows(void *, int, int, int); 96 static void light_eraserows(void *, int, int, long); 97 static int light_allocattr(void *, int, int, int, long *); 98 99 /* wsdisplay_accessops */ 100 static int light_ioctl(void *, void *, u_long, void *, int, struct lwp *); 101 static paddr_t light_mmap(void *, void *, off_t, int); 102 static int light_alloc_screen(void *, const struct wsscreen_descr *, 103 void **, int *, int *, long *); 104 static void light_free_screen(void *, void *); 105 static int light_show_screen(void *, void *, int, 106 void (*)(void *, int, int), void *); 107 108 static const struct wsdisplay_accessops light_accessops = { 109 .ioctl = light_ioctl, 110 .mmap = light_mmap, 111 .alloc_screen = light_alloc_screen, 112 .free_screen = light_free_screen, 113 .show_screen = light_show_screen, 114 .load_font = NULL, 115 .pollc = NULL, 116 .scroll = NULL 117 }; 118 119 static const struct wsdisplay_emulops light_emulops = { 120 .cursor = light_cursor, 121 .mapchar = light_mapchar, 122 .putchar = light_putchar, 123 .copycols = light_copycols, 124 .erasecols = light_erasecols, 125 .copyrows = light_copyrows, 126 .eraserows = light_eraserows, 127 .allocattr = light_allocattr, 128 .replaceattr = NULL 129 }; 130 131 static const struct wsscreen_descr light_screen = { 132 .name = "1024x768", 133 .ncols = 128, 134 .nrows = 48, 135 .textops = &light_emulops, 136 .fontwidth = 8, 137 .fontheight = 16, 138 .capabilities = WSSCREEN_WSCOLORS | WSSCREEN_HILIT | WSSCREEN_REVERSE 139 }; 140 141 const struct wsscreen_descr *_light_screenlist[] = { 142 &light_screen 143 }; 144 145 static const struct wsscreen_list light_screenlist = { 146 sizeof(_light_screenlist) / sizeof(_light_screenlist[0]), 147 _light_screenlist 148 }; 149 150 static struct light_devconfig light_console_dc; 151 static int light_is_console = 0; 152 153 #define LIGHT_ATTR_ENCODE(fg, bg) (((fg << 8) & 0xff00) | (bg * 0x00ff)) 154 #define LIGHT_ATTR_FG(attr) ((attr >> 8) & 0x00ff) 155 #define LIGHT_ATTR_BG(attr) (attr & 0x00ff) 156 157 #define LIGHT_IS_LG1(_rev) ((_rev) < 2) /* else LG2 */ 158 159 /******************************************************************************* 160 * REX routines and helper functions 161 ******************************************************************************/ 162 163 static uint32_t 164 rex_read(struct light_devconfig *dc, uint32_t rset, uint32_t r) 165 { 166 167 return (bus_space_read_4(dc->dc_st, dc->dc_sh, rset + r)); 168 } 169 170 static void 171 rex_write(struct light_devconfig *dc, uint32_t rset, uint32_t r, uint32_t v) 172 { 173 174 bus_space_write_4(dc->dc_st, dc->dc_sh, rset + r, v); 175 } 176 177 static uint8_t 178 rex_vc1_read(struct light_devconfig *dc) 179 { 180 181 rex_write(dc, REX_PAGE1_GO, REX_P1REG_CFGSEL, REX_CFGSEL_VC1_SYSCTL); 182 rex_read(dc, REX_PAGE1_GO, REX_P1REG_VC1_ADDRDATA); 183 return (rex_read(dc, REX_PAGE1_SET, REX_P1REG_VC1_ADDRDATA)); 184 } 185 186 static void 187 rex_vc1_write(struct light_devconfig *dc, uint8_t val) 188 { 189 190 rex_write(dc, REX_PAGE1_GO, REX_P1REG_CFGSEL, REX_CFGSEL_VC1_SYSCTL); 191 rex_write(dc, REX_PAGE1_SET, REX_P1REG_VC1_ADDRDATA, val); 192 rex_write(dc, REX_PAGE1_GO, REX_P1REG_VC1_ADDRDATA, val); 193 } 194 195 static void 196 rex_wait(struct light_devconfig *dc) 197 { 198 199 while (rex_read(dc, REX_PAGE1_SET,REX_P1REG_CFGMODE) & REX_CFGMODE_BUSY) 200 ; 201 } 202 203 static int 204 rex_revision(struct light_devconfig *dc) 205 { 206 207 rex_write(dc, REX_PAGE1_SET, REX_P1REG_CFGSEL, REX_CFGSEL_VC1_LADDR); 208 rex_read(dc, REX_PAGE1_GO, REX_P1REG_WCLOCKREV); 209 return (rex_read(dc, REX_PAGE1_SET, REX_P1REG_WCLOCKREV) & 0x7); 210 } 211 212 static void 213 rex_copy_rect(struct light_devconfig *dc, int from_x, int from_y, int to_x, 214 int to_y, int width, int height) 215 { 216 int dx, dy, ystarti, yendi; 217 218 dx = from_x - to_x; 219 dy = from_y - to_y; 220 221 /* adjust for y. NB: STOPONX, STOPONY are inclusive */ 222 if (to_y > from_y) { 223 ystarti = to_y + height - 1; 224 yendi = to_y; 225 } else { 226 ystarti = to_y; 227 yendi = to_y + height - 1; 228 } 229 230 rex_wait(dc); 231 232 rex_write(dc, REX_PAGE0_SET, REX_P0REG_XSTARTI, to_x); 233 rex_write(dc, REX_PAGE0_SET, REX_P0REG_XENDI, to_x + width); 234 rex_write(dc, REX_PAGE0_SET, REX_P0REG_YSTARTI, ystarti); 235 rex_write(dc, REX_PAGE0_SET, REX_P0REG_YENDI, yendi); 236 rex_write(dc, REX_PAGE0_SET, REX_P0REG_COMMAND, REX_OP_DRAW | 237 REX_LOGICOP_SRC | REX_OP_FLG_LOGICSRC | REX_OP_FLG_QUADMODE | 238 REX_OP_FLG_BLOCK | REX_OP_FLG_STOPONX | REX_OP_FLG_STOPONY); 239 rex_write(dc, REX_PAGE0_GO, REX_P0REG_XYMOVE, 240 ((dx << 16) & 0xffff0000) | (dy & 0x0000ffff)); 241 } 242 243 static void 244 rex_fill_rect(struct light_devconfig *dc, int from_x, int from_y, int to_x, 245 int to_y, long attr) 246 { 247 248 rex_wait(dc); 249 250 rex_write(dc, REX_PAGE0_SET, REX_P0REG_YSTARTI, from_y); 251 rex_write(dc, REX_PAGE0_SET, REX_P0REG_YENDI, to_y); 252 rex_write(dc, REX_PAGE0_SET, REX_P0REG_XSTARTI, from_x); 253 rex_write(dc, REX_PAGE0_SET, REX_P0REG_XENDI, to_x); 254 rex_write(dc, REX_PAGE0_SET, REX_P0REG_COLORREDI, LIGHT_ATTR_BG(attr)); 255 rex_write(dc, REX_PAGE0_SET, REX_P0REG_COMMAND, REX_OP_DRAW | 256 REX_LOGICOP_SRC | REX_OP_FLG_QUADMODE | REX_OP_FLG_BLOCK | 257 REX_OP_FLG_STOPONX | REX_OP_FLG_STOPONY); 258 rex_read(dc, REX_PAGE0_GO, REX_P0REG_COMMAND); 259 } 260 261 /******************************************************************************* 262 * match/attach functions 263 ******************************************************************************/ 264 265 static int 266 light_match(device_t parent, cfdata_t cf, void *aux) 267 { 268 struct gio_attach_args *ga = aux; 269 270 if (ga->ga_addr != LIGHT_ADDR_0 && ga->ga_addr != LIGHT_ADDR_1) 271 return (0); 272 273 if (platform.badaddr( 274 (void *)(intptr_t)(ga->ga_ioh + REX_PAGE1_SET + REX_P1REG_XYOFFSET), 275 sizeof(uint32_t))) 276 return (0); 277 278 if (bus_space_read_4(ga->ga_iot, ga->ga_ioh, 279 REX_PAGE1_SET + REX_P1REG_XYOFFSET) != 0x08000800) 280 return (0); 281 282 return (1); 283 } 284 285 static void 286 light_attach_common(struct light_devconfig *dc, struct gio_attach_args *ga) 287 { 288 289 dc->dc_addr = ga->ga_addr; 290 dc->dc_st = ga->ga_iot; 291 dc->dc_sh = ga->ga_ioh; 292 293 dc->dc_boardrev = rex_revision(dc); 294 295 wsfont_init(); 296 297 dc->dc_font = wsfont_find(NULL, 8, 16, 0, WSDISPLAY_FONTORDER_L2R, 298 WSDISPLAY_FONTORDER_L2R, WSFONT_FIND_BITMAP); 299 300 if (dc->dc_font < 0) 301 panic("light_attach_common: no suitable fonts"); 302 303 if (wsfont_lock(dc->dc_font, &dc->dc_fontdata)) 304 panic("light_attach_common: unable to lock font data"); 305 306 rex_vc1_write(dc, rex_vc1_read(dc) & ~(VC1_SYSCTL_CURSOR | 307 VC1_SYSCTL_CURSOR_ON)); 308 rex_fill_rect(dc, 0, 0, LIGHT_XRES - 1, LIGHT_YRES - 1, 0); 309 } 310 311 static void 312 light_attach(device_t parent, device_t self, void *aux) 313 { 314 struct gio_attach_args *ga = aux; 315 struct light_softc *sc = device_private(self); 316 struct wsemuldisplaydev_attach_args wa; 317 318 if (light_is_console && ga->ga_addr == light_console_dc.dc_addr) { 319 wa.console = 1; 320 sc->sc_dc = &light_console_dc; 321 } else { 322 wa.console = 0; 323 sc->sc_dc = kmem_zalloc(sizeof(struct light_devconfig), 324 KM_SLEEP); 325 326 light_attach_common(sc->sc_dc, ga); 327 } 328 329 aprint_naive(": Display adapter\n"); 330 331 aprint_normal(": SGI LG%d (board revision %d)\n", 332 LIGHT_IS_LG1(sc->sc_dc->dc_boardrev) ? 1 : 2, 333 sc->sc_dc->dc_boardrev); 334 335 wa.scrdata = &light_screenlist; 336 wa.accessops = &light_accessops; 337 wa.accesscookie = sc->sc_dc; 338 339 config_found(self, &wa, wsemuldisplaydevprint, CFARGS_NONE); 340 } 341 342 int 343 light_cnattach(struct gio_attach_args *ga) 344 { 345 346 if (!light_match(NULL, NULL, ga)) 347 return (ENXIO); 348 349 light_attach_common(&light_console_dc, ga); 350 351 wsdisplay_cnattach(&light_screen, &light_console_dc, 0, 0, 352 LIGHT_ATTR_ENCODE(WSCOL_WHITE, WSCOL_BLACK)); 353 354 light_is_console = 1; 355 356 return (0); 357 } 358 359 /******************************************************************************* 360 * wsdisplay_emulops 361 ******************************************************************************/ 362 363 static void 364 light_cursor(void *c, int on, int row, int col) 365 { 366 /* XXX */ 367 } 368 369 static int 370 light_mapchar(void *c, int ch, unsigned int *cp) 371 { 372 struct light_devconfig *dc = (void *)c; 373 374 if (dc->dc_fontdata->encoding != WSDISPLAY_FONTENC_ISO) { 375 ch = wsfont_map_unichar(dc->dc_fontdata, ch); 376 377 if (ch < 0) 378 goto fail; 379 } 380 381 if (ch < dc->dc_fontdata->firstchar || 382 ch >= dc->dc_fontdata->firstchar + dc->dc_fontdata->numchars) 383 goto fail; 384 385 *cp = ch; 386 return 5; 387 388 fail: 389 *cp = ' '; 390 return 0; 391 } 392 393 static void 394 light_putchar(void *c, int row, int col, u_int ch, long attr) 395 { 396 struct light_devconfig *dc = c; 397 struct wsdisplay_font *font = dc->dc_fontdata; 398 uint8_t *bitmap; 399 uint32_t pattern; 400 int i, x, y; 401 402 bitmap = (u_int8_t *)font->data + 403 ((ch - font->firstchar) * font->fontheight * font->stride); 404 x = col * font->fontwidth; 405 y = row * font->fontheight; 406 407 rex_wait(dc); 408 409 rex_write(dc, REX_PAGE0_SET, REX_P0REG_YSTARTI, y); 410 rex_write(dc, REX_PAGE0_SET, REX_P0REG_YENDI, y + font->fontheight - 1); 411 rex_write(dc, REX_PAGE0_SET, REX_P0REG_XSTARTI, x); 412 rex_write(dc, REX_PAGE0_SET, REX_P0REG_XENDI, x + font->fontwidth - 1); 413 rex_write(dc, REX_PAGE0_SET, REX_P0REG_COLORREDI, LIGHT_ATTR_FG(attr)); 414 rex_write(dc, REX_PAGE0_SET, REX_P0REG_COLORBACK, LIGHT_ATTR_BG(attr)); 415 rex_write(dc, REX_PAGE0_GO, REX_P0REG_COMMAND, REX_OP_NOP); 416 417 rex_wait(dc); 418 419 rex_write(dc, REX_PAGE0_SET, REX_P0REG_COMMAND, REX_OP_DRAW | 420 REX_LOGICOP_SRC | REX_OP_FLG_ENZPATTERN | REX_OP_FLG_QUADMODE | 421 REX_OP_FLG_XYCONTINUE | REX_OP_FLG_STOPONX | REX_OP_FLG_BLOCK | 422 REX_OP_FLG_LENGTH32 | REX_OP_FLG_ZOPAQUE); 423 424 for (i = 0; i < font->fontheight; i++) { 425 /* XXX assumes font->fontwidth == 8 */ 426 pattern = *bitmap << 24; 427 rex_write(dc, REX_PAGE0_GO, REX_P0REG_ZPATTERN, pattern); 428 bitmap += font->stride; 429 } 430 } 431 432 /* copy set of columns within the same line */ 433 static void 434 light_copycols(void *c, int row, int srccol, int dstcol, int ncols) 435 { 436 struct light_devconfig *dc = c; 437 struct wsdisplay_font *font = dc->dc_fontdata; 438 int from_x, from_y, to_x, to_y, width, height; 439 440 from_x = srccol * font->fontwidth; 441 from_y = row * font->fontheight; 442 to_x = dstcol * font->fontwidth; 443 to_y = from_y; 444 width = ncols * font->fontwidth; 445 height = font->fontheight; 446 447 rex_copy_rect(c, from_x, from_y, to_x, to_y, width, height); 448 } 449 450 /* erase a set of columns in the same line */ 451 static void 452 light_erasecols(void *c, int row, int startcol, int ncols, long attr) 453 { 454 struct light_devconfig *dc = c; 455 struct wsdisplay_font *font = dc->dc_fontdata; 456 int from_x, from_y, to_x, to_y; 457 458 from_x = startcol * font->fontwidth; 459 from_y = row * font->fontheight; 460 to_x = from_x + (ncols * font->fontwidth) - 1; 461 to_y = from_y + font->fontheight - 1; 462 463 rex_fill_rect(c, from_x, from_y, to_x, to_y, attr); 464 } 465 466 /* copy a set of complete rows */ 467 static void 468 light_copyrows(void *c, int srcrow, int dstrow, int nrows) 469 { 470 struct light_devconfig *dc = c; 471 struct wsdisplay_font *font = dc->dc_fontdata; 472 int from_x, from_y, to_x, to_y, width, height; 473 474 from_x = 0; 475 from_y = srcrow * font->fontheight; 476 to_x = 0; 477 to_y = dstrow * font->fontheight; 478 width = LIGHT_XRES; 479 height = nrows * font->fontheight; 480 481 rex_copy_rect(c, from_x, from_y, to_x, to_y, width, height); 482 } 483 484 /* erase a set of complete rows */ 485 static void 486 light_eraserows(void *c, int row, int nrows, long attr) 487 { 488 struct light_devconfig *dc = c; 489 struct wsdisplay_font *font = dc->dc_fontdata; 490 int from_x, from_y, to_x, to_y; 491 492 from_x = 0; 493 from_y = row * font->fontheight; 494 to_x = LIGHT_XRES - 1; 495 to_y = from_y + (nrows * font->fontheight) - 1; 496 497 rex_fill_rect(c, from_x, from_y, to_x, to_y, attr); 498 } 499 500 static int 501 light_allocattr(void *c, int fg, int bg, int flags, long *attr) 502 { 503 504 if (flags & ~(WSATTR_WSCOLORS | WSATTR_HILIT | WSATTR_REVERSE)) 505 return (EINVAL); 506 507 if ((flags & WSATTR_WSCOLORS) == 0) { 508 fg = WSCOL_WHITE; 509 bg = WSCOL_BLACK; 510 } 511 512 if (flags & WSATTR_HILIT) 513 fg += 8; 514 515 if (flags & WSATTR_REVERSE) { 516 int tmp = fg; 517 fg = bg; 518 bg = tmp; 519 } 520 521 *attr = LIGHT_ATTR_ENCODE(fg, bg); 522 return (0); 523 } 524 525 /******************************************************************************* 526 * wsdisplay_accessops 527 ******************************************************************************/ 528 529 static int 530 light_ioctl(void *c, void *vs, u_long cmd, void *data, int flag, 531 struct lwp *l) 532 { 533 struct wsdisplay_fbinfo *fbinfo = (struct wsdisplay_fbinfo *)data; 534 535 switch (cmd) { 536 case WSDISPLAYIO_GINFO: 537 fbinfo->width = LIGHT_XRES; 538 fbinfo->height = LIGHT_YRES; 539 fbinfo->depth = LIGHT_DEPTH; 540 fbinfo->cmsize = 1 << LIGHT_DEPTH; 541 return (0); 542 543 case WSDISPLAYIO_GMODE: 544 *(u_int *)data = WSDISPLAYIO_MODE_EMUL; 545 break; 546 547 case WSDISPLAYIO_GTYPE: 548 *(u_int *)data = WSDISPLAY_TYPE_LIGHT; 549 return (0); 550 551 case WSDISPLAYIO_SVIDEO: 552 /* 553 * Turning off VC1 will stop refreshing the video ram (or so I 554 * suspect). We'll blank the screen after bringing it back up, 555 * since that's nicer than displaying garbage. 556 */ 557 if (*(u_int *)data == WSDISPLAYIO_VIDEO_OFF) 558 rex_vc1_write(c,rex_vc1_read(c) & ~VC1_SYSCTL_VIDEO_ON); 559 else { 560 rex_vc1_write(c, rex_vc1_read(c) | VC1_SYSCTL_VIDEO_ON); 561 rex_fill_rect(c, 0, 0, LIGHT_XRES-1, LIGHT_YRES-1, 0); 562 } 563 return (0); 564 } 565 566 return (EPASSTHROUGH); 567 } 568 569 static paddr_t 570 light_mmap(void *c, void *vs, off_t off, int prot) 571 { 572 struct light_devconfig *dc = c; 573 574 if (off >= 0x7fff) 575 return (-1); 576 577 return (mips_btop(dc->dc_addr + off)); 578 } 579 580 static int 581 light_alloc_screen(void *c, const struct wsscreen_descr *type, void **cookiep, 582 int *curxp, int *curyp, long *attr) 583 { 584 585 return (ENOMEM); 586 } 587 588 static void 589 light_free_screen(void *c, void *cookie) 590 { 591 592 panic("light_free_screen"); 593 } 594 595 static int 596 light_show_screen(void *c, void *cookie, int waitok, 597 void (*cb)(void *, int, int), void *cbarg) 598 { 599 600 return (0); 601 } 602
Indexes created Sun Sep 28 16:09:52 GMT 2025