sys/dev/sun/cgthree.c

   1 /*      $NetBSD: cgthree.c,v 1.25 2009/09/19 07:07:43 tsutsui 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 1.25 2009/09/19 07:07:43 tsutsui 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         cgthreeopen, nullclose, noread, nowrite, cgthreeioctl,
  85         nostop, notty, nopoll, cgthreemmap, nokqfilter, D_OTHER
  86 };
  87
  88 /* frame buffer generic driver */
  89 static struct fbdriver cgthreefbdriver = {
  90         cgthreeunblank, cgthreeopen, nullclose, cgthreeioctl, nopoll,
  91         cgthreemmap, nokqfilter
  92 };
  93
  94 /* Video control parameters */
  95 struct cg3_videoctrl {
  96         unsigned char   sense;          /* Monitor sense value */
  97         unsigned char   vctrl[12];
  98 } cg3_videoctrl[] = {
  99 /* Missing entries: sense 0x10, 0x30, 0x50 */
 100         { 0x40, /* this happens to be my 19'' 1152x900 gray-scale monitor */
 101            {0xbb, 0x2b, 0x3, 0xb, 0xb3, 0x3, 0xaf, 0x2b, 0x2, 0xa, 0xff, 0x1}
 102         },
 103         { 0x00, /* default? must be last */
 104            {0xbb, 0x2b, 0x3, 0xb, 0xb3, 0x3, 0xaf, 0x2b, 0x2, 0xa, 0xff, 0x1}
 105         }
 106 };
 107
 108 #if NWSDISPLAY > 0
 109 #ifdef RASTERCONSOLE
 110 #error RASTERCONSOLE and wsdisplay are mutually exclusive
 111 #endif
 112
 113 static void cg3_setup_palette(struct cgthree_softc *);
 114
 115 struct wsscreen_descr cgthree_defaultscreen = {
 116         "std",
 117         0, 0,   /* will be filled in -- XXX shouldn't, it's global */
 118         NULL,           /* textops */
 119         8, 16,  /* font width/height */
 120         WSSCREEN_WSCOLORS,      /* capabilities */
 121         NULL    /* modecookie */
 122 };
 123
 124 static int      cgthree_ioctl(void *, void *, u_long, void *, int, struct lwp *);
 125 static paddr_t  cgthree_mmap(void *, void *, off_t, int);
 126 static void     cgthree_init_screen(void *, struct vcons_screen *, int, long *);
 127
 128 int     cgthree_putcmap(struct cgthree_softc *, struct wsdisplay_cmap *);
 129 int     cgthree_getcmap(struct cgthree_softc *, struct wsdisplay_cmap *);
 130
 131 struct wsdisplay_accessops cgthree_accessops = {
 132         cgthree_ioctl,
 133         cgthree_mmap,
 134         NULL,   /* alloc_screen */
 135         NULL,   /* free_screen */
 136         NULL,   /* show_screen */
 137         NULL,   /* load_font */
 138         NULL,   /* pollc */
 139         NULL    /* scroll */
 140 };
 141
 142 const struct wsscreen_descr *_cgthree_scrlist[] = {
 143         &cgthree_defaultscreen
 144 };
 145
 146 struct wsscreen_list cgthree_screenlist = {
 147         sizeof(_cgthree_scrlist) / sizeof(struct wsscreen_descr *),
 148         _cgthree_scrlist
 149 };
 150
 151
 152 extern const u_char rasops_cmap[768];
 153
 154 static struct vcons_screen cg3_console_screen;
 155 #endif /* NWSDISPLAY > 0 */
 156
 157 void
 158 cgthreeattach(struct cgthree_softc *sc, const char *name, int isconsole)
 159 {
 160         int i;
 161         struct fbdevice *fb = &sc->sc_fb;
 162 #if NWSDISPLAY > 0
 163         struct wsemuldisplaydev_attach_args aa;
 164         struct rasops_info *ri = &cg3_console_screen.scr_ri;
 165         unsigned long defattr;
 166 #endif
 167         volatile struct fbcontrol *fbc = sc->sc_fbc;
 168         volatile struct bt_regs *bt = &fbc->fbc_dac;
 169
 170         fb->fb_driver = &cgthreefbdriver;
 171         fb->fb_type.fb_cmsize = 256;
 172         fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes;
 173         printf(": %s, %d x %d", name,
 174                 fb->fb_type.fb_width, fb->fb_type.fb_height);
 175
 176         /* Transfer video magic to board, if it's not running */
 177         if ((fbc->fbc_ctrl & FBC_TIMING) == 0) {
 178                 int sense = (fbc->fbc_status & FBS_MSENSE);
 179                 /* Search table for video timings fitting this monitor */
 180                 for (i = 0; i < sizeof(cg3_videoctrl)/sizeof(cg3_videoctrl[0]);
 181                      i++) {
 182                         int j;
 183                         if (sense != cg3_videoctrl[i].sense)
 184                                 continue;
 185
 186                         printf(" setting video ctrl");
 187                         for (j = 0; j < 12; j++)
 188                                 fbc->fbc_vcontrol[j] =
 189                                         cg3_videoctrl[i].vctrl[j];
 190                         fbc->fbc_ctrl |= FBC_TIMING;
 191                         break;
 192                 }
 193         }
 194
 195         /* make sure we are not blanked */
 196         cgthree_set_video(sc, 1);
 197         BT_INIT(bt, 0);
 198
 199         if (isconsole) {
 200                 printf(" (console)\n");
 201 #ifdef RASTERCONSOLE
 202                 fbrcons_init(fb);
 203 #endif
 204         } else
 205                 printf("\n");
 206
 207         fb_attach(fb, isconsole);
 208
 209 #if NWSDISPLAY > 0
 210         sc->sc_width = fb->fb_type.fb_width;
 211         sc->sc_stride = fb->fb_type.fb_width;
 212         sc->sc_height = fb->fb_type.fb_height;
 213
 214         /* setup rasops and so on for wsdisplay */
 215         sc->sc_mode = WSDISPLAYIO_MODE_EMUL;
 216
 217         vcons_init(&sc->vd, sc, &cgthree_defaultscreen, &cgthree_accessops);
 218         sc->vd.init_screen = cgthree_init_screen;
 219
 220         if(isconsole) {
 221                 /* we mess with cg3_console_screen only once */
 222                 vcons_init_screen(&sc->vd, &cg3_console_screen, 1,
 223                     &defattr);
 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         } else {
 233                 /*
 234                  * we're not the console so we just clear the screen and don't
 235                  * set up any sort of text display
 236                  */
 237                 if (cgthree_defaultscreen.textops == NULL) {
 238                         /*
 239                          * ugly, but...
 240                          * we want the console settings to win, so we only
 241                          * touch anything when we find an untouched screen
 242                          * definition. In this case we fill it from fb to
 243                          * avoid problems in case no cgthree is the console
 244                          */
 245                         ri = &sc->sc_fb.fb_rinfo;
 246                         cgthree_defaultscreen.textops = &ri->ri_ops;
 247                         cgthree_defaultscreen.capabilities = ri->ri_caps;
 248                         cgthree_defaultscreen.nrows = ri->ri_rows;
 249                         cgthree_defaultscreen.ncols = ri->ri_cols;
 250                 }
 251         }
 252
 253         /* Initialize the default color map. */
 254         cg3_setup_palette(sc);
 255
 256         aa.scrdata = &cgthree_screenlist;
 257         aa.console = isconsole;
 258         aa.accessops = &cgthree_accessops;
 259         aa.accesscookie = &sc->vd;
 260         config_found(sc->sc_dev, &aa, wsemuldisplaydevprint);
 261 #else
 262         /* Initialize the default color map. */
 263         bt_initcmap(&sc->sc_cmap, 256);
 264         cgthreeloadcmap(sc, 0, 256);
 265 #endif
 266
 267 }
 268
 269
 270 int
 271 cgthreeopen(dev_t dev, int flags, int mode, struct lwp *l)
 272 {
 273         int unit = minor(dev);
 274
 275         if (device_lookup(&cgthree_cd, unit) == NULL)
 276                 return (ENXIO);
 277         return (0);
 278 }
 279
 280 int
 281 cgthreeioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l)
 282 {
 283         struct cgthree_softc *sc = device_lookup_private(&cgthree_cd,
 284                                                          minor(dev));
 285         struct fbgattr *fba;
 286         int error;
 287
 288         switch (cmd) {
 289
 290         case FBIOGTYPE:
 291                 *(struct fbtype *)data = sc->sc_fb.fb_type;
 292                 break;
 293
 294         case FBIOGATTR:
 295                 fba = (struct fbgattr *)data;
 296                 fba->real_type = sc->sc_fb.fb_type.fb_type;
 297                 fba->owner = 0;         /* XXX ??? */
 298                 fba->fbtype = sc->sc_fb.fb_type;
 299                 fba->sattr.flags = 0;
 300                 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type;
 301                 fba->sattr.dev_specific[0] = -1;
 302                 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type;
 303                 fba->emu_types[1] = -1;
 304                 break;
 305
 306         case FBIOGETCMAP:
 307 #define p ((struct fbcmap *)data)
 308                 return (bt_getcmap(p, &sc->sc_cmap, 256, 1));
 309
 310         case FBIOPUTCMAP:
 311                 /* copy to software map */
 312                 error = bt_putcmap(p, &sc->sc_cmap, 256, 1);
 313                 if (error)
 314                         return (error);
 315                 /* now blast them into the chip */
 316                 /* XXX should use retrace interrupt */
 317                 cgthreeloadcmap(sc, p->index, p->count);
 318 #undef p
 319                 break;
 320
 321         case FBIOGVIDEO:
 322                 *(int *)data = cgthree_get_video(sc);
 323                 break;
 324
 325         case FBIOSVIDEO:
 326                 cgthree_set_video(sc, *(int *)data);
 327                 break;
 328
 329         default:
 330                 return (ENOTTY);
 331         }
 332         return (0);
 333 }
 334
 335 /*
 336  * Undo the effect of an FBIOSVIDEO that turns the video off.
 337  */
 338 static void
 339 cgthreeunblank(device_t self)
 340 {
 341         struct cgthree_softc *sc = device_private(self);
 342
 343         cgthree_set_video(sc, 1);
 344 }
 345
 346 static void
 347 cgthree_set_video(struct cgthree_softc *sc, int enable)
 348 {
 349
 350         if (enable)
 351                 sc->sc_fbc->fbc_ctrl |= FBC_VENAB;
 352         else
 353                 sc->sc_fbc->fbc_ctrl &= ~FBC_VENAB;
 354 }
 355
 356 static int
 357 cgthree_get_video(struct cgthree_softc *sc)
 358 {
 359
 360         return ((sc->sc_fbc->fbc_ctrl & FBC_VENAB) != 0);
 361 }
 362
 363 /*
 364  * Load a subset of the current (new) colormap into the Brooktree DAC.
 365  */
 366 static void
 367 cgthreeloadcmap(struct cgthree_softc *sc, int start, int ncolors)
 368 {
 369         volatile struct bt_regs *bt;
 370         u_int *ip;
 371         int count;
 372
 373         ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)];      /* start/4 * 3 */
 374         count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3;
 375         bt = &sc->sc_fbc->fbc_dac;
 376         bt->bt_addr = BT_D4M4(start);
 377         while (--count >= 0)
 378                 bt->bt_cmap = *ip++;
 379 }
 380
 381 /*
 382  * Return the address that would map the given device at the given
 383  * offset, allowing for the given protection, or return -1 for error.
 384  *
 385  * The cg3 is mapped starting at 256KB, for pseudo-compatibility with
 386  * the cg4 (which had an overlay plane in the first 128K and an enable
 387  * plane in the next 128K).  X11 uses only 256k+ region but tries to
 388  * map the whole thing, so we repeatedly map the first 256K to the
 389  * first page of the color screen.  If someone tries to use the overlay
 390  * and enable regions, they will get a surprise....
 391  *
 392  * As well, mapping at an offset of 0x04000000 causes the cg3 to be
 393  * mapped in flat mode without the cg4 emulation.
 394  */
 395 paddr_t
 396 cgthreemmap(dev_t dev, off_t off, int prot)
 397 {
 398         struct cgthree_softc *sc = device_lookup_private(&cgthree_cd,
 399                                                          minor(dev));
 400
 401 #define START           (128*1024 + 128*1024)
 402 #define NOOVERLAY       (0x04000000)
 403
 404         if (off & PGOFSET)
 405                 panic("cgthreemmap");
 406         if (off < 0)
 407                 return (-1);
 408         if ((u_int)off >= NOOVERLAY)
 409                 off -= NOOVERLAY;
 410         else if ((u_int)off >= START)
 411                 off -= START;
 412         else
 413                 off = 0;
 414
 415         if (off >= sc->sc_fb.fb_type.fb_size)
 416                 return (-1);
 417
 418         return (bus_space_mmap(sc->sc_bustag,
 419                 sc->sc_paddr, CG3REG_MEM + off,
 420                 prot, BUS_SPACE_MAP_LINEAR));
 421 }
 422
 423 #if NWSDISPLAY > 0
 424
 425 static void
 426 cg3_setup_palette(struct cgthree_softc *sc)
 427 {
 428         int i, j;
 429
 430         j = 0;
 431         for (i = 0; i < 256; i++) {
 432                 sc->sc_cmap.cm_map[i][0] = rasops_cmap[j];
 433                 j++;
 434                 sc->sc_cmap.cm_map[i][1] = rasops_cmap[j];
 435                 j++;
 436                 sc->sc_cmap.cm_map[i][2] = rasops_cmap[j];
 437                 j++;
 438         }
 439         cgthreeloadcmap(sc, 0, 256);
 440 }
 441
 442 int
 443 cgthree_ioctl(void *v, void *vs, u_long cmd, void *data, int flag,
 444         struct lwp *l)
 445 {
 446         /* we'll probably need to add more stuff here */
 447         struct vcons_data *vd = v;
 448         struct cgthree_softc *sc = vd->cookie;
 449         struct wsdisplay_fbinfo *wdf;
 450         struct rasops_info *ri = &sc->sc_fb.fb_rinfo;
 451         struct vcons_screen *ms = sc->vd.active;
 452         switch (cmd) {
 453                 case WSDISPLAYIO_GTYPE:
 454                         *(u_int *)data = WSDISPLAY_TYPE_SUNTCX;
 455                         return 0;
 456                 case WSDISPLAYIO_GINFO:
 457                         wdf = (void *)data;
 458                         wdf->height = ri->ri_height;
 459                         wdf->width = ri->ri_width;
 460                         wdf->depth = ri->ri_depth;
 461                         wdf->cmsize = 256;
 462                         return 0;
 463
 464                 case WSDISPLAYIO_GETCMAP:
 465                         return cgthree_getcmap(sc,
 466                             (struct wsdisplay_cmap *)data);
 467                 case WSDISPLAYIO_PUTCMAP:
 468                         return cgthree_putcmap(sc,
 469                             (struct wsdisplay_cmap *)data);
 470
 471                 case WSDISPLAYIO_SMODE:
 472                         {
 473                                 int new_mode = *(int*)data;
 474                                 if (new_mode != sc->sc_mode)
 475                                 {
 476                                         sc->sc_mode = new_mode;
 477                                         if(new_mode == WSDISPLAYIO_MODE_EMUL)
 478                                         {
 479                                                 cg3_setup_palette(sc);
 480                                                 vcons_redraw_screen(ms);
 481                                         }
 482                                 }
 483                         }
 484         }
 485         return EPASSTHROUGH;
 486 }
 487
 488 paddr_t
 489 cgthree_mmap(void *v, void *vs, off_t offset, int prot)
 490 {
 491         /* I'm not at all sure this is the right thing to do */
 492         return cgthreemmap(0, offset, prot); /* assume minor dev 0 for now */
 493 }
 494
 495 int
 496 cgthree_putcmap(struct cgthree_softc *sc, struct wsdisplay_cmap *cm)
 497 {
 498         u_int index = cm->index;
 499         u_int count = cm->count;
 500         int error,i;
 501         if (index >= 256 || count > 256 || index + count > 256)
 502                 return EINVAL;
 503
 504         for (i = 0; i < count; i++)
 505         {
 506                 error = copyin(&cm->red[i],
 507                     &sc->sc_cmap.cm_map[index + i][0], 1);
 508                 if (error)
 509                         return error;
 510                 error = copyin(&cm->green[i],
 511                     &sc->sc_cmap.cm_map[index + i][1],
 512                     1);
 513                 if (error)
 514                         return error;
 515                 error = copyin(&cm->blue[i],
 516                     &sc->sc_cmap.cm_map[index + i][2], 1);
 517                 if (error)
 518                         return error;
 519         }
 520         cgthreeloadcmap(sc, index, count);
 521
 522         return 0;
 523 }
 524
 525 int
 526 cgthree_getcmap(struct cgthree_softc *sc, struct wsdisplay_cmap *cm)
 527 {
 528         u_int index = cm->index;
 529         u_int count = cm->count;
 530         int error,i;
 531
 532         if (index >= 256 || count > 256 || index + count > 256)
 533                 return EINVAL;
 534
 535         for (i = 0; i < count; i++)
 536         {
 537                 error = copyout(&sc->sc_cmap.cm_map[index + i][0],
 538                     &cm->red[i], 1);
 539                 if (error)
 540                         return error;
 541                 error = copyout(&sc->sc_cmap.cm_map[index + i][1],
 542                     &cm->green[i], 1);
 543                 if (error)
 544                         return error;
 545                 error = copyout(&sc->sc_cmap.cm_map[index + i][2],
 546                     &cm->blue[i], 1);
 547                 if (error)
 548                         return error;
 549         }
 550
 551         return 0;
 552 }
 553
 554 void
 555 cgthree_init_screen(void *cookie, struct vcons_screen *scr,
 556     int existing, long *defattr)
 557 {
 558         struct cgthree_softc *sc = cookie;
 559         struct rasops_info *ri = &scr->scr_ri;
 560
 561         ri->ri_depth = 8;
 562         ri->ri_width = sc->sc_width;
 563         ri->ri_height = sc->sc_height;
 564         ri->ri_stride = sc->sc_stride;
 565         ri->ri_flg = RI_CENTER;
 566
 567         ri->ri_bits = sc->sc_fb.fb_pixels;
 568
 569         memset(sc->sc_fb.fb_pixels, (*defattr >> 16) & 0xff,
 570             sc->sc_stride * sc->sc_height);
 571         rasops_init(ri, sc->sc_height/8, sc->sc_width/8);
 572         ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_REVERSE;
 573         rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight,
 574                     sc->sc_width / ri->ri_font->fontwidth);
 575
 576         ri->ri_hw = scr;
 577 }
 578
 579 #endif /* NWSDISPLAY > 0 */