sys/arch/sparc/dev/cgeight.c

   1 /*      $NetBSD: cgeight.c,v 1.45 2008/04/28 20:23:35 martin Exp $      */
   2
   3 /*-
   4  * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe.
   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  * Copyright (c) 1992, 1993
  34  *      The Regents of the University of California.  All rights reserved.
  35  *
  36  * This software was developed by the Computer Systems Engineering group
  37  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
  38  * contributed to Berkeley.
  39  *
  40  * All advertising materials mentioning features or use of this software
  41  * must display the following acknowledgement:
  42  *      This product includes software developed by the University of
  43  *      California, Lawrence Berkeley Laboratory.
  44  *
  45  * Redistribution and use in source and binary forms, with or without
  46  * modification, are permitted provided that the following conditions
  47  * are met:
  48  * 1. Redistributions of source code must retain the above copyright
  49  *    notice, this list of conditions and the following disclaimer.
  50  * 2. Redistributions in binary form must reproduce the above copyright
  51  *    notice, this list of conditions and the following disclaimer in the
  52  *    documentation and/or other materials provided with the distribution.
  53  * 3. Neither the name of the University nor the names of its contributors
  54  *    may be used to endorse or promote products derived from this software
  55  *    without specific prior written permission.
  56  *
  57  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  58  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  59  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  60  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  61  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  62  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  63  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  64  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  65  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  66  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  67  * SUCH DAMAGE.
  68  *
  69  *      from @(#)cgthree.c      8.2 (Berkeley) 10/30/93
  70  */
  71
  72 /*
  73  * Copyright (c) 1995 Theo de Raadt.  All rights reserved.
  74  *
  75  * Redistribution and use in source and binary forms, with or without
  76  * modification, are permitted provided that the following conditions
  77  * are met:
  78  * 1. Redistributions of source code must retain the above copyright
  79  *    notice, this list of conditions and the following disclaimer.
  80  * 2. Redistributions in binary form must reproduce the above copyright
  81  *    notice, this list of conditions and the following disclaimer in the
  82  *    documentation and/or other materials provided with the distribution.
  83  *
  84  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  85  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  86  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  87  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  88  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  89  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  90  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  91  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  92  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  93  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  94  */
  95
  96 /*
  97  * color display (cgeight) driver.
  98  *
  99  * Does not handle interrupts, even though they can occur.
 100  *
 101  * XXX should defer colormap updates to vertical retrace interrupts
 102  */
 103
 104 #include <sys/cdefs.h>
 105 __KERNEL_RCSID(0, "$NetBSD: cgeight.c,v 1.45 2008/04/28 20:23:35 martin Exp $");
 106
 107 #include <sys/param.h>
 108 #include <sys/systm.h>
 109 #include <sys/buf.h>
 110 #include <sys/device.h>
 111 #include <sys/ioctl.h>
 112 #include <sys/malloc.h>
 113 #include <sys/mman.h>
 114 #include <sys/tty.h>
 115 #include <sys/conf.h>
 116
 117 #include <uvm/uvm_extern.h>
 118
 119 #include <machine/autoconf.h>
 120 #include <machine/eeprom.h>
 121
 122 #include <dev/sun/fbio.h>
 123 #include <dev/sun/fbvar.h>
 124 #include <dev/sun/btreg.h>
 125 #include <dev/sun/btvar.h>
 126 #include <dev/sun/pfourreg.h>
 127
 128 /* per-display variables */
 129 struct cgeight_softc {
 130         struct device   sc_dev;         /* base device */
 131         struct fbdevice sc_fb;          /* frame buffer device */
 132         bus_space_tag_t sc_bustag;
 133         bus_addr_t      sc_paddr;       /* phys address for device mmap() */
 134
 135         volatile struct fbcontrol *sc_fbc;      /* Brooktree registers */
 136         union bt_cmap   sc_cmap;        /* Brooktree color map */
 137 };
 138
 139 /* autoconfiguration driver */
 140 static void     cgeightattach(struct device *, struct device *, void *);
 141 static int      cgeightmatch(struct device *, struct cfdata *, void *);
 142 #if defined(SUN4)
 143 static void     cgeightunblank(struct device *);
 144 #endif
 145
 146 static int      cg8_pfour_probe(void *, void *);
 147
 148 CFATTACH_DECL(cgeight, sizeof(struct cgeight_softc),
 149     cgeightmatch, cgeightattach, NULL, NULL);
 150
 151 extern struct cfdriver cgeight_cd;
 152
 153 dev_type_open(cgeightopen);
 154 dev_type_ioctl(cgeightioctl);
 155 dev_type_mmap(cgeightmmap);
 156
 157 const struct cdevsw cgeight_cdevsw = {
 158         cgeightopen, nullclose, noread, nowrite, cgeightioctl,
 159         nostop, notty, nopoll, cgeightmmap, nokqfilter
 160 };
 161
 162 #if defined(SUN4)
 163 /* frame buffer generic driver */
 164 static struct fbdriver cgeightfbdriver = {
 165         cgeightunblank, cgeightopen, nullclose, cgeightioctl,
 166         nopoll, cgeightmmap, nokqfilter
 167 };
 168
 169 static void cgeightloadcmap(struct cgeight_softc *, int, int);
 170 static int cgeight_get_video(struct cgeight_softc *);
 171 static void cgeight_set_video(struct cgeight_softc *, int);
 172 #endif
 173
 174 /*
 175  * Match a cgeight.
 176  */
 177 static int
 178 cgeightmatch(struct device *parent, struct cfdata *cf, void *aux)
 179 {
 180         union obio_attach_args *uoba = aux;
 181         struct obio4_attach_args *oba;
 182
 183         if (uoba->uoba_isobio4 == 0)
 184                 return (0);
 185
 186         oba = &uoba->uoba_oba4;
 187         return (bus_space_probe(oba->oba_bustag, oba->oba_paddr,
 188                                 4,      /* probe size */
 189                                 0,      /* offset */
 190                                 0,      /* flags */
 191                                 cg8_pfour_probe, NULL));
 192 }
 193
 194 static int
 195 cg8_pfour_probe(void *vaddr, void *arg)
 196 {
 197
 198         return (fb_pfour_id(vaddr) == PFOUR_ID_COLOR24);
 199 }
 200
 201 /*
 202  * Attach a display.  We need to notice if it is the console, too.
 203  */
 204 static void
 205 cgeightattach(struct device *parent, struct device *self, void *aux)
 206 {
 207 #if defined(SUN4)
 208         union obio_attach_args *uoba = aux;
 209         struct obio4_attach_args *oba = &uoba->uoba_oba4;
 210         struct cgeight_softc *sc = device_private(self);
 211         struct fbdevice *fb = &sc->sc_fb;
 212         bus_space_handle_t bh;
 213         volatile struct bt_regs *bt;
 214         int ramsize, i, isconsole;
 215
 216         sc->sc_bustag = oba->oba_bustag;
 217         sc->sc_paddr = (bus_addr_t)oba->oba_paddr;
 218
 219         /* Map the pfour register. */
 220         if (bus_space_map(oba->oba_bustag, oba->oba_paddr,
 221                           sizeof(uint32_t),
 222                           BUS_SPACE_MAP_LINEAR,
 223                           &bh) != 0) {
 224                 printf("%s: cannot map pfour register\n", self->dv_xname);
 225                 return;
 226         }
 227         fb->fb_pfour = (volatile uint32_t *)bh;
 228
 229         fb->fb_driver = &cgeightfbdriver;
 230         fb->fb_device = &sc->sc_dev;
 231         fb->fb_type.fb_type = FBTYPE_MEMCOLOR;
 232         fb->fb_flags = device_cfdata(&sc->sc_dev)->cf_flags & FB_USERMASK;
 233         fb->fb_flags |= FB_PFOUR;
 234
 235         ramsize = PFOUR_COLOR_OFF_END - PFOUR_COLOR_OFF_OVERLAY;
 236
 237         fb->fb_type.fb_depth = 24;
 238         fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900);
 239
 240         sc->sc_fb.fb_type.fb_cmsize = 256;
 241         sc->sc_fb.fb_type.fb_size = ramsize;
 242         printf(": cgeight/p4, %d x %d",
 243                 fb->fb_type.fb_width,
 244                 fb->fb_type.fb_height);
 245
 246         isconsole = 0;
 247
 248         if (CPU_ISSUN4) {
 249                 struct eeprom *eep = (struct eeprom *)eeprom_va;
 250
 251                 /*
 252                  * Assume this is the console if there's no eeprom info
 253                  * to be found.
 254                  */
 255                 if (eep == NULL || eep->eeConsole == EE_CONS_P4OPT)
 256                         isconsole = fb_is_console(0);
 257         }
 258
 259 #if 0
 260         /*
 261          * We don't do any of the console handling here.  Instead,
 262          * we let the bwtwo driver pick up the overlay plane and
 263          * use it instead.  Rconsole should have better performance
 264          * with the 1-bit depth.
 265          *      -- Jason R. Thorpe <thorpej@NetBSD.org>
 266          */
 267
 268         /*
 269          * When the ROM has mapped in a cgfour display, the address
 270          * maps only the video RAM, so in any case we have to map the
 271          * registers ourselves.  We only need the video RAM if we are
 272          * going to print characters via rconsole.
 273          */
 274
 275         if (isconsole) {
 276                 /* XXX this is kind of a waste */
 277                 fb->fb_pixels = mapiodev(ca->ca_ra.ra_reg,
 278                                          PFOUR_COLOR_OFF_OVERLAY, ramsize);
 279         }
 280 #endif
 281
 282         /* Map the Brooktree. */
 283         if (bus_space_map(oba->oba_bustag,
 284                           oba->oba_paddr + PFOUR_COLOR_OFF_CMAP,
 285                           sizeof(struct fbcontrol),
 286                           BUS_SPACE_MAP_LINEAR,
 287                           &bh) != 0) {
 288                 printf("%s: cannot map control registers\n", self->dv_xname);
 289                 return;
 290         }
 291         sc->sc_fbc = (volatile struct fbcontrol *)bh;
 292
 293 #if 0   /* XXX thorpej ??? */
 294         /* tell the enable plane to look at the mono image */
 295         memset(ca->ca_ra.ra_vaddr, 0xff,
 296             sc->sc_fb.fb_type.fb_width * sc->sc_fb.fb_type.fb_height / 8);
 297 #endif
 298
 299         /* grab initial (current) color map */
 300         bt = &sc->sc_fbc->fbc_dac;
 301         bt->bt_addr = 0;
 302         for (i = 0; i < 256 * 3 / 4; i++)
 303                 sc->sc_cmap.cm_chip[i] = bt->bt_cmap;
 304
 305         BT_INIT(bt, 0);
 306
 307 #if 0   /* see above */
 308         if (isconsole) {
 309                 printf(" (console)\n");
 310 #if defined(RASTERCONSOLE) && 0 /* XXX been told it doesn't work well. */
 311                 fbrcons_init(fb);
 312 #endif
 313         } else
 314 #endif /* 0 */
 315                 printf("\n");
 316
 317         /*
 318          * Even though we're not using rconsole, we'd still like
 319          * to notice if we're the console framebuffer.
 320          */
 321         fb_attach(&sc->sc_fb, isconsole);
 322 #endif
 323 }
 324
 325 int
 326 cgeightopen(dev_t dev, int flags, int mode, struct lwp *l)
 327 {
 328         int unit = minor(dev);
 329
 330         if (device_lookup(&cgeight_cd, unit) == NULL)
 331                 return (ENXIO);
 332         return (0);
 333 }
 334
 335 int
 336 cgeightioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l)
 337 {
 338 #if defined(SUN4)
 339         struct cgeight_softc *sc = device_lookup_private(&cgeight_cd,
 340                                                          minor(dev));
 341         struct fbgattr *fba;
 342         int error;
 343
 344         switch (cmd) {
 345
 346         case FBIOGTYPE:
 347                 *(struct fbtype *)data = sc->sc_fb.fb_type;
 348                 break;
 349
 350         case FBIOGATTR:
 351                 fba = (struct fbgattr *)data;
 352                 fba->real_type = sc->sc_fb.fb_type.fb_type;
 353                 fba->owner = 0;         /* XXX ??? */
 354                 fba->fbtype = sc->sc_fb.fb_type;
 355                 fba->sattr.flags = 0;
 356                 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type;
 357                 fba->sattr.dev_specific[0] = -1;
 358                 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type;
 359                 fba->emu_types[1] = -1;
 360                 break;
 361
 362         case FBIOGETCMAP:
 363 #define p ((struct fbcmap *)data)
 364                 return (bt_getcmap(p, &sc->sc_cmap, 256, 1));
 365
 366         case FBIOPUTCMAP:
 367                 /* copy to software map */
 368                 error = bt_putcmap(p, &sc->sc_cmap, 256, 1);
 369                 if (error)
 370                         return (error);
 371                 /* now blast them into the chip */
 372                 /* XXX should use retrace interrupt */
 373                 cgeightloadcmap(sc, p->index, p->count);
 374 #undef p
 375                 break;
 376
 377         case FBIOGVIDEO:
 378                 *(int *)data = cgeight_get_video(sc);
 379                 break;
 380
 381         case FBIOSVIDEO:
 382                 cgeight_set_video(sc, *(int *)data);
 383                 break;
 384
 385         default:
 386                 return (ENOTTY);
 387         }
 388 #endif /* SUN4 */
 389
 390         return (0);
 391 }
 392
 393 /*
 394  * Return the address that would map the given device at the given
 395  * offset, allowing for the given protection, or return -1 for error.
 396  *
 397  * The cg8 maps it's overlay plane at 0 for 128K, followed by the
 398  * enable plane for 128K, followed by the colour for as long as it
 399  * goes. Starting at 8MB, it maps the ramdac for PAGE_SIZE, then the p4
 400  * register for PAGE_SIZE, then the bootrom for 0x40000.
 401  */
 402 paddr_t
 403 cgeightmmap(dev_t dev, off_t off, int prot)
 404 {
 405         struct cgeight_softc *sc = device_lookup_private(&cgeight_cd,
 406                                                          minor(dev));
 407         off_t poff;
 408
 409 #define START_ENABLE    (128*1024)
 410 #define START_COLOR     ((128*1024) + (128*1024))
 411 #define COLOR_SIZE      (sc->sc_fb.fb_type.fb_width * \
 412                             sc->sc_fb.fb_type.fb_height * 3)
 413 #define END_COLOR       (START_COLOR + COLOR_SIZE)
 414 #define START_SPECIAL   0x800000
 415 #define PROMSIZE        0x40000
 416 #define NOOVERLAY       (0x04000000)
 417
 418         if (off & PGOFSET)
 419                 panic("cgeightmap");
 420
 421         if (off < 0)
 422                 return (-1);
 423         else if ((u_int)off >= NOOVERLAY) {
 424                 off -= NOOVERLAY;
 425
 426                 /*
 427                  * X11 maps a huge chunk of the frame buffer; far more than
 428                  * there really is. We compensate by double-mapping the
 429                  * first page for as many other pages as it wants
 430                  */
 431                 while ((u_int)off >= COLOR_SIZE)
 432                         off -= COLOR_SIZE;      /* XXX thorpej ??? */
 433
 434                 poff = off + PFOUR_COLOR_OFF_COLOR;
 435         } else if ((u_int)off < START_ENABLE) {
 436                 /*
 437                  * in overlay plane
 438                  */
 439                 poff = PFOUR_COLOR_OFF_OVERLAY + off;
 440         } else if ((u_int)off < START_COLOR) {
 441                 /*
 442                  * in enable plane
 443                  */
 444                 poff = (off - START_ENABLE) + PFOUR_COLOR_OFF_ENABLE;
 445         } else if ((u_int)off < sc->sc_fb.fb_type.fb_size) {
 446                 /*
 447                  * in colour plane
 448                  */
 449                 poff = (off - START_COLOR) + PFOUR_COLOR_OFF_COLOR;
 450         } else if ((u_int)off < START_SPECIAL) {
 451                 /*
 452                  * hole
 453                  */
 454                 poff = 0;       /* XXX */
 455         } else if ((u_int)off == START_SPECIAL) {
 456                 /*
 457                  * colour map (Brooktree)
 458                  */
 459                 poff = PFOUR_COLOR_OFF_CMAP;
 460         } else if ((u_int)off == START_SPECIAL + PAGE_SIZE) {
 461                 /*
 462                  * p4 register
 463                  */
 464                 poff = 0;
 465         } else if ((u_int)off > (START_SPECIAL + (PAGE_SIZE * 2)) &&
 466             (u_int) off < (START_SPECIAL + (PAGE_SIZE * 2) + PROMSIZE)) {
 467                 /*
 468                  * rom
 469                  */
 470                 poff = 0x8000 + (off - (START_SPECIAL + (PAGE_SIZE * 2)));
 471         } else
 472                 return (-1);
 473
 474         return (bus_space_mmap(sc->sc_bustag,
 475                 sc->sc_paddr, poff,
 476                 prot, BUS_SPACE_MAP_LINEAR));
 477 }
 478
 479 #if defined(SUN4)
 480 /*
 481  * Undo the effect of an FBIOSVIDEO that turns the video off.
 482  */
 483 static void
 484 cgeightunblank(struct device *dev)
 485 {
 486
 487         cgeight_set_video(device_private(dev), 1);
 488 }
 489
 490 static int
 491 cgeight_get_video(struct cgeight_softc *sc)
 492 {
 493
 494         return (fb_pfour_get_video(&sc->sc_fb));
 495 }
 496
 497 static void
 498 cgeight_set_video(struct cgeight_softc *sc, int enable)
 499 {
 500
 501         fb_pfour_set_video(&sc->sc_fb, enable);
 502 }
 503
 504 /*
 505  * Load a subset of the current (new) colormap into the Brooktree DAC.
 506  */
 507 static void
 508 cgeightloadcmap(struct cgeight_softc *sc, int start, int ncolors)
 509 {
 510         volatile struct bt_regs *bt;
 511         u_int *ip;
 512         int count;
 513
 514         ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)];      /* start/4 * 3 */
 515         count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3;
 516         bt = &sc->sc_fbc->fbc_dac;
 517         bt->bt_addr = BT_D4M4(start);
 518         while (--count >= 0)
 519                 bt->bt_cmap = *ip++;
 520 }
 521 #endif /* SUN4 */