sys/arch/sun3/dev/cg2.c

   1 /*      $NetBSD: cg2.c,v 1.28 2008/06/08 17:30:08 tsutsui Exp $ */
   2
   3 /*
   4  * Copyright (c) 1992, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This software was developed by the Computer Systems Engineering group
   8  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
   9  * contributed to Berkeley.
  10  *
  11  * All advertising materials mentioning features or use of this software
  12  * must display the following acknowledgement:
  13  *      This product includes software developed by the University of
  14  *      California, Lawrence Berkeley Laboratory.
  15  *
  16  * Redistribution and use in source and binary forms, with or without
  17  * modification, are permitted provided that the following conditions
  18  * are met:
  19  * 1. Redistributions of source code must retain the above copyright
  20  *    notice, this list of conditions and the following disclaimer.
  21  * 2. Redistributions in binary form must reproduce the above copyright
  22  *    notice, this list of conditions and the following disclaimer in the
  23  *    documentation and/or other materials provided with the distribution.
  24  * 3. Neither the name of the University nor the names of its contributors
  25  *    may be used to endorse or promote products derived from this software
  26  *    without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  38  * SUCH DAMAGE.
  39  *
  40  *      from: @(#)cgthree.c     8.2 (Berkeley) 10/30/93
  41  */
  42
  43 /*
  44  * color display (cg2) driver.
  45  *
  46  * Does not handle interrupts, even though they can occur.
  47  *
  48  * XXX should defer colormap updates to vertical retrace interrupts
  49  */
  50
  51 #include <sys/cdefs.h>
  52 __KERNEL_RCSID(0, "$NetBSD: cg2.c,v 1.28 2008/06/08 17:30:08 tsutsui Exp $");
  53
  54 #include <sys/param.h>
  55 #include <sys/systm.h>
  56 #include <sys/conf.h>
  57 #include <sys/device.h>
  58 #include <sys/ioctl.h>
  59 #include <sys/malloc.h>
  60 #include <sys/mman.h>
  61 #include <sys/proc.h>
  62 #include <sys/tty.h>
  63
  64 #include <uvm/uvm_extern.h>
  65
  66 #include <dev/sun/fbio.h>
  67 #include <machine/autoconf.h>
  68 #include <machine/pmap.h>
  69 #include <machine/cg2reg.h>
  70
  71 #include "ioconf.h"
  72 #include "fbvar.h"
  73
  74 #define CMSIZE 256
  75
  76 /* offset to and size of mapped part of frame buffer */
  77 #define PLANEMAP_SIZE           0x100000
  78 #define PIXELMAP_SIZE           0x100000
  79 #define ROWOPMAP_SIZE           0x100000
  80
  81 #define CTLREGS_OFF             0x300000
  82 #define CTLREGS_SIZE             0x10600
  83
  84 #define CG2_MAPPED_OFFSET       (PLANEMAP_SIZE + PIXELMAP_SIZE)
  85 #define CG2_MAPPED_SIZE         (CTLREGS_OFF + CTLREGS_SIZE)
  86
  87 /* per-display variables */
  88 struct cg2_softc {
  89         device_t sc_dev;                /* base device */
  90         struct  fbdevice sc_fb;         /* frame buffer device */
  91         int     sc_phys;                /* display RAM (phys addr) */
  92         int     sc_pmtype;              /* pmap type bits */
  93         struct  cg2fb *sc_ctlreg;       /* control registers */
  94 };
  95
  96 /* autoconfiguration driver */
  97 static int      cg2match(device_t, cfdata_t, void *);
  98 static void     cg2attach(device_t, device_t, void *);
  99
 100 CFATTACH_DECL_NEW(cgtwo, sizeof(struct cg2_softc),
 101     cg2match, cg2attach, NULL, NULL);
 102
 103 dev_type_open(cg2open);
 104 dev_type_ioctl(cg2ioctl);
 105 dev_type_mmap(cg2mmap);
 106
 107 const struct cdevsw cgtwo_cdevsw = {
 108         cg2open, nullclose, noread, nowrite, cg2ioctl,
 109         nostop, notty, nopoll, cg2mmap, nokqfilter,
 110 };
 111
 112 static int cg2gattr(struct fbdevice *,  void *);
 113 static int cg2gvideo(struct fbdevice *, void *);
 114 static int cg2svideo(struct fbdevice *, void *);
 115 static int cg2getcmap(struct fbdevice *, void *);
 116 static int cg2putcmap(struct fbdevice *, void *);
 117
 118 static struct fbdriver cg2fbdriver = {
 119         cg2open, nullclose, cg2mmap, nokqfilter, cg2gattr,
 120         cg2gvideo, cg2svideo,
 121         cg2getcmap, cg2putcmap };
 122
 123 static int cg2intr(void *);
 124
 125 /*
 126  * Match a cg2.
 127  */
 128 static int
 129 cg2match(device_t parent, cfdata_t cf, void *aux)
 130 {
 131         struct confargs *ca = aux;
 132         int probe_addr;
 133
 134         /* No default VME address. */
 135         if (ca->ca_paddr == -1)
 136                 return 0;
 137
 138         /* Make sure something is there... */
 139         probe_addr = ca->ca_paddr + CTLREGS_OFF;
 140         if (bus_peek(ca->ca_bustype, probe_addr, 1) == -1)
 141                 return 0;
 142
 143         /* XXX: look at the ID reg? */
 144         /* aprint_debug("cg2: id=0x%x\n", x); */
 145
 146         /* Default interrupt priority. */
 147         if (ca->ca_intpri == -1)
 148                 ca->ca_intpri = 4;
 149
 150         return 1;
 151 }
 152
 153 /*
 154  * Attach a display.  We need to notice if it is the console, too.
 155  */
 156 static void
 157 cg2attach(device_t parent, device_t self, void *args)
 158 {
 159         struct cg2_softc *sc = device_private(self);
 160         struct fbdevice *fb = &sc->sc_fb;
 161         struct confargs *ca = args;
 162         struct fbtype *fbt;
 163
 164         sc->sc_dev = self;
 165         sc->sc_phys = ca->ca_paddr;
 166         sc->sc_pmtype = PMAP_NC | PMAP_VME16;
 167
 168         sc->sc_ctlreg = (struct cg2fb *)bus_mapin(ca->ca_bustype,
 169             ca->ca_paddr + CTLREGS_OFF, CTLREGS_SIZE);
 170
 171         isr_add_vectored(cg2intr, sc, ca->ca_intpri, ca->ca_intvec);
 172
 173         /*
 174          * XXX - Initialize?  Determine type?
 175          */
 176         sc->sc_ctlreg->intrptvec.reg = ca->ca_intvec;
 177         sc->sc_ctlreg->status.word = 1;
 178
 179         fb->fb_driver = &cg2fbdriver;
 180         fb->fb_private = sc;
 181         fb->fb_name = device_xname(self);
 182
 183         fbt = &fb->fb_fbtype;
 184         fbt->fb_type = FBTYPE_SUN2COLOR;
 185         fbt->fb_depth = 8;
 186         fbt->fb_cmsize = CMSIZE;
 187
 188         fbt->fb_width = 1152;
 189         fbt->fb_height = 900;
 190         fbt->fb_size = CG2_MAPPED_SIZE;
 191
 192         aprint_normal(" (%dx%d)\n", fbt->fb_width, fbt->fb_height);
 193         fb_attach(fb, 2);
 194 }
 195
 196 int
 197 cg2open(dev_t dev, int flags, int mode, struct lwp *l)
 198 {
 199         struct cg2_softc *sc;
 200         int unit = minor(dev);
 201
 202         sc = device_lookup_private(&cgtwo_cd, unit);
 203         if (sc == NULL)
 204                 return ENXIO;
 205         return 0;
 206 }
 207
 208 int
 209 cg2ioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l)
 210 {
 211         struct cg2_softc *sc = device_lookup_private(&cgtwo_cd, minor(dev));
 212
 213         return fbioctlfb(&sc->sc_fb, cmd, data);
 214 }
 215
 216 /*
 217  * Return the address that would map the given device at the given
 218  * offset, allowing for the given protection, or return -1 for error.
 219  */
 220 paddr_t
 221 cg2mmap(dev_t dev, off_t off, int prot)
 222 {
 223         struct cg2_softc *sc = device_lookup_private(&cgtwo_cd, minor(dev));
 224
 225         if (off & PGOFSET)
 226                 panic("%s: bad offset", __func__);
 227
 228         if (off >= CG2_MAPPED_SIZE)
 229                 return -1;
 230
 231         /*
 232          * I turned on PMAP_NC here to disable the cache as I was
 233          * getting horribly broken behaviour with it on.
 234          */
 235         return (sc->sc_phys + off) | sc->sc_pmtype;
 236 }
 237
 238 /*
 239  * Internal ioctl functions.
 240  */
 241
 242 /* FBIOGATTR: */
 243 static int
 244 cg2gattr(struct fbdevice *fb, void *data)
 245 {
 246         struct fbgattr *fba = data;
 247
 248         fba->real_type = fb->fb_fbtype.fb_type;
 249         fba->owner = 0;         /* XXX - TIOCCONS stuff? */
 250         fba->fbtype = fb->fb_fbtype;
 251         fba->sattr.flags = 0;
 252         fba->sattr.emu_type = fb->fb_fbtype.fb_type;
 253         fba->sattr.dev_specific[0] = -1;
 254         fba->emu_types[0] = fb->fb_fbtype.fb_type;
 255         fba->emu_types[1] = -1;
 256         return 0;
 257 }
 258
 259 /* FBIOGVIDEO: */
 260 static int
 261 cg2gvideo(struct fbdevice *fb, void *data)
 262 {
 263         int *on = data;
 264         struct cg2_softc *sc = fb->fb_private;
 265
 266         *on = sc->sc_ctlreg->status.reg.video_enab;
 267         return 0;
 268 }
 269
 270 /* FBIOSVIDEO: */
 271 static int
 272 cg2svideo(struct fbdevice *fb, void *data)
 273 {
 274         int *on = data;
 275         struct cg2_softc *sc = fb->fb_private;
 276
 277         sc->sc_ctlreg->status.reg.video_enab = (*on) & 1;
 278
 279         return 0;
 280 }
 281
 282 /* FBIOGETCMAP: */
 283 static int
 284 cg2getcmap(struct fbdevice *fb, void *data)
 285 {
 286         struct fbcmap *cmap = data;
 287         struct cg2_softc *sc = fb->fb_private;
 288         uint8_t red[CMSIZE], green[CMSIZE], blue[CMSIZE];
 289         int error, start, count, ecount;
 290         u_int i;
 291         uint16_t *p;
 292
 293         start = cmap->index;
 294         count = cmap->count;
 295         ecount = start + count;
 296         if (start >= CMSIZE || count > CMSIZE - start)
 297                 return EINVAL;
 298
 299         /* XXX - Wait for retrace? */
 300
 301         /* Copy hardware to local arrays. */
 302         p = &sc->sc_ctlreg->redmap[start];
 303         for (i = start; i < ecount; i++)
 304                 red[i] = *p++;
 305         p = &sc->sc_ctlreg->greenmap[start];
 306         for (i = start; i < ecount; i++)
 307                 green[i] = *p++;
 308         p = &sc->sc_ctlreg->bluemap[start];
 309         for (i = start; i < ecount; i++)
 310                 blue[i] = *p++;
 311
 312         /* Copy local arrays to user space. */
 313         if ((error = copyout(red + start, cmap->red, count)) != 0)
 314                 return error;
 315         if ((error = copyout(green + start, cmap->green, count)) != 0)
 316                 return error;
 317         if ((error = copyout(blue + start, cmap->blue, count)) != 0)
 318                 return error;
 319
 320         return 0;
 321 }
 322
 323 /* FBIOPUTCMAP: */
 324 static int
 325 cg2putcmap(struct fbdevice *fb, void *data)
 326 {
 327         struct fbcmap *cmap = data;
 328         struct cg2_softc *sc = fb->fb_private;
 329         uint8_t red[CMSIZE], green[CMSIZE], blue[CMSIZE];
 330         int error;
 331         u_int start, count, ecount;
 332         u_int i;
 333         uint16_t *p;
 334
 335         start = cmap->index;
 336         count = cmap->count;
 337         ecount = start + count;
 338         if (start >= CMSIZE || count > CMSIZE - start)
 339                 return EINVAL;
 340
 341         /* Copy from user space to local arrays. */
 342         if ((error = copyin(cmap->red, red + start, count)) != 0)
 343                 return error;
 344         if ((error = copyin(cmap->green, green + start, count)) != 0)
 345                 return error;
 346         if ((error = copyin(cmap->blue, blue + start, count)) != 0)
 347                 return error;
 348
 349         /* XXX - Wait for retrace? */
 350
 351         /* Copy from local arrays to hardware. */
 352         p = &sc->sc_ctlreg->redmap[start];
 353         for (i = start; i < ecount; i++)
 354                 *p++ = red[i];
 355         p = &sc->sc_ctlreg->greenmap[start];
 356         for (i = start; i < ecount; i++)
 357                 *p++ = green[i];
 358         p = &sc->sc_ctlreg->bluemap[start];
 359         for (i = start; i < ecount; i++)
 360                 *p++ = blue[i];
 361
 362         return 0;
 363
 364 }
 365
 366 static int
 367 cg2intr(void *vsc)
 368 {
 369         struct cg2_softc *sc = vsc;
 370
 371         /* XXX - Just disable interrupts for now. */
 372         sc->sc_ctlreg->status.reg.inten = 0;
 373
 374         printf("cg2intr\n");
 375         return 1;
 376 }