1 /* $NetBSD: cgthree.c,v 1.33 2016/11/09 19:54:25 macallan Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Paul Kranenburg. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * color display (cgthree) driver. 34 * 35 * Does not handle interrupts, even though they can occur. 36 * 37 * XXX should defer colormap updates to vertical retrace interrupts 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: cgthree.c,v 1.33 2016/11/09 19:54:25 macallan Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/buf.h> 46 #include <sys/device.h> 47 #include <sys/ioctl.h> 48 #include <sys/malloc.h> 49 #include <sys/mman.h> 50 #include <sys/tty.h> 51 #include <sys/conf.h> 52 53 #include <sys/bus.h> 54 #include <machine/autoconf.h> 55 56 #include <dev/sun/fbio.h> 57 #include <dev/sun/fbvar.h> 58 59 #include <dev/sun/btreg.h> 60 #include <dev/sun/btvar.h> 61 #include <dev/sun/cgthreereg.h> 62 #include <dev/sun/cgthreevar.h> 63 64 #if NWSDISPLAY > 0 65 #include <dev/wscons/wsconsio.h> 66 #include <dev/wsfont/wsfont.h> 67 #include <dev/rasops/rasops.h> 68 69 #include "opt_wsemul.h" 70 #endif 71 72 #include "ioconf.h" 73 74 static void cgthreeunblank(device_t); 75 static void cgthreeloadcmap(struct cgthree_softc *, int, int); 76 static void cgthree_set_video(struct cgthree_softc *, int); 77 static int cgthree_get_video(struct cgthree_softc *); 78 79 dev_type_open(cgthreeopen); 80 dev_type_ioctl(cgthreeioctl); 81 dev_type_mmap(cgthreemmap); 82 83 const struct cdevsw cgthree_cdevsw = { 84 .d_open = cgthreeopen, 85 .d_close = nullclose, 86 .d_read = noread, 87 .d_write = nowrite, 88 .d_ioctl = cgthreeioctl, 89 .d_stop = nostop, 90 .d_tty = notty, 91 .d_poll = nopoll, 92 .d_mmap = cgthreemmap, 93 .d_kqfilter = nokqfilter, 94 .d_discard = nodiscard, 95 .d_flag = D_OTHER 96 }; 97 98 /* frame buffer generic driver */ 99 static struct fbdriver cgthreefbdriver = { 100 cgthreeunblank, cgthreeopen, nullclose, cgthreeioctl, nopoll, 101 cgthreemmap, nokqfilter 102 }; 103 104 /* Video control parameters */ 105 struct cg3_videoctrl { 106 unsigned char sense; /* Monitor sense value */ 107 unsigned char vctrl[12]; 108 } cg3_videoctrl[] = { 109 /* Missing entries: sense 0x10, 0x30, 0x50 */ 110 { 0x40, /* this happens to be my 19'' 1152x900 gray-scale monitor */ 111 {0xbb, 0x2b, 0x3, 0xb, 0xb3, 0x3, 0xaf, 0x2b, 0x2, 0xa, 0xff, 0x1} 112 }, 113 { 0x00, /* default? must be last */ 114 {0xbb, 0x2b, 0x3, 0xb, 0xb3, 0x3, 0xaf, 0x2b, 0x2, 0xa, 0xff, 0x1} 115 } 116 }; 117 118 static void cg3_setup_palette(struct cgthree_softc *); 119 120 struct wsscreen_descr cgthree_defaultscreen = { 121 "std", 122 0, 0, /* will be filled in -- XXX shouldn't, it's global */ 123 NULL, /* textops */ 124 8, 16, /* font width/height */ 125 WSSCREEN_WSCOLORS, /* capabilities */ 126 NULL /* modecookie */ 127 }; 128 129 static int cgthree_ioctl(void *, void *, u_long, void *, int, struct lwp *); 130 static paddr_t cgthree_mmap(void *, void *, off_t, int); 131 static void cgthree_init_screen(void *, struct vcons_screen *, int, long *); 132 133 int cgthree_putcmap(struct cgthree_softc *, struct wsdisplay_cmap *); 134 int cgthree_getcmap(struct cgthree_softc *, struct wsdisplay_cmap *); 135 136 struct wsdisplay_accessops cgthree_accessops = { 137 cgthree_ioctl, 138 cgthree_mmap, 139 NULL, /* alloc_screen */ 140 NULL, /* free_screen */ 141 NULL, /* show_screen */ 142 NULL, /* load_font */ 143 NULL, /* pollc */ 144 NULL /* scroll */ 145 }; 146 147 const struct wsscreen_descr *_cgthree_scrlist[] = { 148 &cgthree_defaultscreen 149 }; 150 151 struct wsscreen_list cgthree_screenlist = { 152 sizeof(_cgthree_scrlist) / sizeof(struct wsscreen_descr *), 153 _cgthree_scrlist 154 }; 155 156 157 extern const u_char rasops_cmap[768]; 158 159 static struct vcons_screen cg3_console_screen; 160 161 void 162 cgthreeattach(struct cgthree_softc *sc, const char *name, int isconsole) 163 { 164 int i; 165 struct fbdevice *fb = &sc->sc_fb; 166 struct wsemuldisplaydev_attach_args aa; 167 struct rasops_info *ri = &cg3_console_screen.scr_ri; 168 unsigned long defattr; 169 volatile struct fbcontrol *fbc = sc->sc_fbc; 170 volatile struct bt_regs *bt = &fbc->fbc_dac; 171 172 fb->fb_driver = &cgthreefbdriver; 173 fb->fb_type.fb_cmsize = 256; 174 fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes; 175 printf(": %s, %d x %d", name, 176 fb->fb_type.fb_width, fb->fb_type.fb_height); 177 178 /* Transfer video magic to board, if it's not running */ 179 if ((fbc->fbc_ctrl & FBC_TIMING) == 0) { 180 int sense = (fbc->fbc_status & FBS_MSENSE); 181 /* Search table for video timings fitting this monitor */ 182 for (i = 0; i < sizeof(cg3_videoctrl)/sizeof(cg3_videoctrl[0]); 183 i++) { 184 int j; 185 if (sense != cg3_videoctrl[i].sense) 186 continue; 187 188 printf(" setting video ctrl"); 189 for (j = 0; j < 12; j++) 190 fbc->fbc_vcontrol[j] = 191 cg3_videoctrl[i].vctrl[j]; 192 fbc->fbc_ctrl |= FBC_TIMING; 193 break; 194 } 195 } 196 197 /* make sure we are not blanked */ 198 cgthree_set_video(sc, 1); 199 BT_INIT(bt, 0); 200 201 if (isconsole) { 202 printf(" (console)\n"); 203 } else 204 printf("\n"); 205 206 fb_attach(fb, isconsole); 207 208 sc->sc_width = fb->fb_type.fb_width; 209 sc->sc_stride = fb->fb_type.fb_width; 210 sc->sc_height = fb->fb_type.fb_height; 211 212 /* setup rasops and so on for wsdisplay */ 213 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 214 215 vcons_init(&sc->vd, sc, &cgthree_defaultscreen, &cgthree_accessops); 216 sc->vd.init_screen = cgthree_init_screen; 217 218 if(isconsole) { 219 /* we mess with cg3_console_screen only once */ 220 vcons_init_screen(&sc->vd, &cg3_console_screen, 1, 221 &defattr); 222 memset(sc->sc_fb.fb_pixels, (defattr >> 16) & 0xff, 223 sc->sc_stride * sc->sc_height); 224 cg3_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 225 226 cgthree_defaultscreen.textops = &ri->ri_ops; 227 cgthree_defaultscreen.capabilities = ri->ri_caps; 228 cgthree_defaultscreen.nrows = ri->ri_rows; 229 cgthree_defaultscreen.ncols = ri->ri_cols; 230 sc->vd.active = &cg3_console_screen; 231 wsdisplay_cnattach(&cgthree_defaultscreen, ri, 0, 0, defattr); 232 vcons_replay_msgbuf(&cg3_console_screen); 233 } else { 234 /* 235 * we're not the console so we just clear the screen and don't 236 * set up any sort of text display 237 */ 238 } 239 240 /* Initialize the default color map. */ 241 cg3_setup_palette(sc); 242 243 aa.scrdata = &cgthree_screenlist; 244 aa.console = isconsole; 245 aa.accessops = &cgthree_accessops; 246 aa.accesscookie = &sc->vd; 247 config_found(sc->sc_dev, &aa, wsemuldisplaydevprint); 248 } 249 250 251 int 252 cgthreeopen(dev_t dev, int flags, int mode, struct lwp *l) 253 { 254 int unit = minor(dev); 255 256 if (device_lookup(&cgthree_cd, unit) == NULL) 257 return (ENXIO); 258 return (0); 259 } 260 261 int 262 cgthreeioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 263 { 264 struct cgthree_softc *sc = device_lookup_private(&cgthree_cd, 265 minor(dev)); 266 struct fbgattr *fba; 267 int error; 268 269 switch (cmd) { 270 271 case FBIOGTYPE: 272 *(struct fbtype *)data = sc->sc_fb.fb_type; 273 break; 274 275 case FBIOGATTR: 276 fba = (struct fbgattr *)data; 277 fba->real_type = sc->sc_fb.fb_type.fb_type; 278 fba->owner = 0; /* XXX ??? */ 279 fba->fbtype = sc->sc_fb.fb_type; 280 fba->sattr.flags = 0; 281 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 282 fba->sattr.dev_specific[0] = -1; 283 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 284 fba->emu_types[1] = -1; 285 break; 286 287 case FBIOGETCMAP: 288 #define p ((struct fbcmap *)data) 289 return (bt_getcmap(p, &sc->sc_cmap, 256, 1)); 290 291 case FBIOPUTCMAP: 292 /* copy to software map */ 293 error = bt_putcmap(p, &sc->sc_cmap, 256, 1); 294 if (error) 295 return (error); 296 /* now blast them into the chip */ 297 /* XXX should use retrace interrupt */ 298 cgthreeloadcmap(sc, p->index, p->count); 299 #undef p 300 break; 301 302 case FBIOGVIDEO: 303 *(int *)data = cgthree_get_video(sc); 304 break; 305 306 case FBIOSVIDEO: 307 cgthree_set_video(sc, *(int *)data); 308 break; 309 310 default: 311 return (ENOTTY); 312 } 313 return (0); 314 } 315 316 /* 317 * Undo the effect of an FBIOSVIDEO that turns the video off. 318 */ 319 static void 320 cgthreeunblank(device_t self) 321 { 322 struct cgthree_softc *sc = device_private(self); 323 324 cgthree_set_video(sc, 1); 325 } 326 327 static void 328 cgthree_set_video(struct cgthree_softc *sc, int enable) 329 { 330 331 if (enable) 332 sc->sc_fbc->fbc_ctrl |= FBC_VENAB; 333 else 334 sc->sc_fbc->fbc_ctrl &= ~FBC_VENAB; 335 } 336 337 static int 338 cgthree_get_video(struct cgthree_softc *sc) 339 { 340 341 return ((sc->sc_fbc->fbc_ctrl & FBC_VENAB) != 0); 342 } 343 344 /* 345 * Load a subset of the current (new) colormap into the Brooktree DAC. 346 */ 347 static void 348 cgthreeloadcmap(struct cgthree_softc *sc, int start, int ncolors) 349 { 350 volatile struct bt_regs *bt; 351 u_int *ip; 352 int count; 353 354 ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */ 355 count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3; 356 bt = &sc->sc_fbc->fbc_dac; 357 bt->bt_addr = BT_D4M4(start); 358 while (--count >= 0) 359 bt->bt_cmap = *ip++; 360 } 361 362 /* 363 * Return the address that would map the given device at the given 364 * offset, allowing for the given protection, or return -1 for error. 365 * 366 * The cg3 is mapped starting at 256KB, for pseudo-compatibility with 367 * the cg4 (which had an overlay plane in the first 128K and an enable 368 * plane in the next 128K). X11 uses only 256k+ region but tries to 369 * map the whole thing, so we repeatedly map the first 256K to the 370 * first page of the color screen. If someone tries to use the overlay 371 * and enable regions, they will get a surprise.... 372 * 373 * As well, mapping at an offset of 0x04000000 causes the cg3 to be 374 * mapped in flat mode without the cg4 emulation. 375 */ 376 paddr_t 377 cgthreemmap(dev_t dev, off_t off, int prot) 378 { 379 struct cgthree_softc *sc = device_lookup_private(&cgthree_cd, 380 minor(dev)); 381 382 #define START (128*1024 + 128*1024) 383 #define NOOVERLAY (0x04000000) 384 385 if (off & PGOFSET) 386 panic("cgthreemmap"); 387 if (off < 0) 388 return (-1); 389 if ((u_int)off >= NOOVERLAY) 390 off -= NOOVERLAY; 391 else if ((u_int)off >= START) 392 off -= START; 393 else 394 off = 0; 395 396 if (off >= sc->sc_fb.fb_type.fb_size) 397 return (-1); 398 399 return (bus_space_mmap(sc->sc_bustag, 400 sc->sc_paddr, CG3REG_MEM + off, 401 prot, BUS_SPACE_MAP_LINEAR)); 402 } 403 404 static void 405 cg3_setup_palette(struct cgthree_softc *sc) 406 { 407 int i, j; 408 409 j = 0; 410 for (i = 0; i < 256; i++) { 411 sc->sc_cmap.cm_map[i][0] = rasops_cmap[j]; 412 j++; 413 sc->sc_cmap.cm_map[i][1] = rasops_cmap[j]; 414 j++; 415 sc->sc_cmap.cm_map[i][2] = rasops_cmap[j]; 416 j++; 417 } 418 cgthreeloadcmap(sc, 0, 256); 419 } 420 421 int 422 cgthree_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 423 struct lwp *l) 424 { 425 /* we'll probably need to add more stuff here */ 426 struct vcons_data *vd = v; 427 struct cgthree_softc *sc = vd->cookie; 428 struct wsdisplay_fbinfo *wdf; 429 struct vcons_screen *ms = sc->vd.active; 430 struct rasops_info *ri = &ms->scr_ri; 431 switch (cmd) { 432 case WSDISPLAYIO_GTYPE: 433 *(u_int *)data = WSDISPLAY_TYPE_SUNTCX; 434 return 0; 435 case WSDISPLAYIO_GINFO: 436 wdf = (void *)data; 437 wdf->height = ri->ri_height; 438 wdf->width = ri->ri_width; 439 wdf->depth = 8; 440 wdf->cmsize = 256; 441 return 0; 442 443 case WSDISPLAYIO_GETCMAP: 444 return cgthree_getcmap(sc, 445 (struct wsdisplay_cmap *)data); 446 case WSDISPLAYIO_PUTCMAP: 447 return cgthree_putcmap(sc, 448 (struct wsdisplay_cmap *)data); 449 450 case WSDISPLAYIO_SMODE: 451 { 452 int new_mode = *(int*)data; 453 if (new_mode != sc->sc_mode) 454 { 455 sc->sc_mode = new_mode; 456 if(new_mode == WSDISPLAYIO_MODE_EMUL) 457 { 458 cg3_setup_palette(sc); 459 vcons_redraw_screen(ms); 460 } 461 } 462 } 463 return 0; 464 case WSDISPLAYIO_GET_FBINFO: 465 { 466 struct wsdisplayio_fbinfo *fbi = data; 467 468 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 469 } 470 } 471 return EPASSTHROUGH; 472 } 473 474 paddr_t 475 cgthree_mmap(void *v, void *vs, off_t offset, int prot) 476 { 477 struct vcons_data *vd = v; 478 struct cgthree_softc *sc = vd->cookie; 479 480 if (offset < 0) return -1; 481 if (offset >= sc->sc_fb.fb_type.fb_size) 482 return -1; 483 484 return bus_space_mmap(sc->sc_bustag, 485 sc->sc_paddr, CG3REG_MEM + offset, 486 prot, BUS_SPACE_MAP_LINEAR); 487 } 488 489 int 490 cgthree_putcmap(struct cgthree_softc *sc, struct wsdisplay_cmap *cm) 491 { 492 u_int index = cm->index; 493 u_int count = cm->count; 494 int error,i; 495 if (index >= 256 || count > 256 || index + count > 256) 496 return EINVAL; 497 498 for (i = 0; i < count; i++) 499 { 500 error = copyin(&cm->red[i], 501 &sc->sc_cmap.cm_map[index + i][0], 1); 502 if (error) 503 return error; 504 error = copyin(&cm->green[i], 505 &sc->sc_cmap.cm_map[index + i][1], 506 1); 507 if (error) 508 return error; 509 error = copyin(&cm->blue[i], 510 &sc->sc_cmap.cm_map[index + i][2], 1); 511 if (error) 512 return error; 513 } 514 cgthreeloadcmap(sc, index, count); 515 516 return 0; 517 } 518 519 int 520 cgthree_getcmap(struct cgthree_softc *sc, struct wsdisplay_cmap *cm) 521 { 522 u_int index = cm->index; 523 u_int count = cm->count; 524 int error,i; 525 526 if (index >= 256 || count > 256 || index + count > 256) 527 return EINVAL; 528 529 for (i = 0; i < count; i++) 530 { 531 error = copyout(&sc->sc_cmap.cm_map[index + i][0], 532 &cm->red[i], 1); 533 if (error) 534 return error; 535 error = copyout(&sc->sc_cmap.cm_map[index + i][1], 536 &cm->green[i], 1); 537 if (error) 538 return error; 539 error = copyout(&sc->sc_cmap.cm_map[index + i][2], 540 &cm->blue[i], 1); 541 if (error) 542 return error; 543 } 544 545 return 0; 546 } 547 548 void 549 cgthree_init_screen(void *cookie, struct vcons_screen *scr, 550 int existing, long *defattr) 551 { 552 struct cgthree_softc *sc = cookie; 553 struct rasops_info *ri = &scr->scr_ri; 554 555 scr->scr_flags |= VCONS_DONT_READ; 556 557 ri->ri_depth = 8; 558 ri->ri_width = sc->sc_width; 559 ri->ri_height = sc->sc_height; 560 ri->ri_stride = sc->sc_stride; 561 ri->ri_flg = RI_CENTER; 562 563 ri->ri_bits = sc->sc_fb.fb_pixels; 564 565 rasops_init(ri, 0, 0); 566 ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_REVERSE; 567 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 568 sc->sc_width / ri->ri_font->fontwidth); 569 570 ri->ri_hw = scr; 571 } 572