cg2.c revision 1.1
1 /* $NetBSD: cg2.c,v 1.1 1995/04/07 02:31:45 gwr 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. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * from: @(#)cgthree.c 8.2 (Berkeley) 10/30/93 45 */ 46 47 /* 48 * color display (cg2) driver. 49 * 50 * Does not handle interrupts, even though they can occur. 51 * 52 * XXX should defer colormap updates to vertical retrace interrupts 53 */ 54 55 #include <sys/param.h> 56 #include <sys/device.h> 57 #include <sys/ioctl.h> 58 #include <sys/malloc.h> 59 #include <sys/mman.h> 60 #include <sys/tty.h> 61 62 #include <vm/vm.h> 63 64 #include <machine/fbio.h> 65 #include <machine/autoconf.h> 66 #include <machine/pmap.h> 67 #include <machine/eeprom.h> 68 #include <machine/cg2reg.h> 69 70 #include "fbvar.h" 71 72 #define CMSIZE 256 73 74 /* offset to and size of mapped part of frame buffer */ 75 #define PLANEMAP_SIZE 0x100000 76 #define PIXELMAP_SIZE 0x100000 77 #define ROWOPMAP_SIZE 0x100000 78 79 #define CTLREGS_OFF 0x300000 80 #define CTLREGS_SIZE 0x10600 81 82 #define CG2_MAPPED_OFFSET (PLANEMAP_SIZE + PIXELMAP_SIZE) 83 #define CG2_MAPPED_SIZE (ROWOPMAP_SIZE /* XXX + CTLREGS_SIZE */) 84 #define CG2_MAPPED_LIMIT (CTLREGS_OFF + CTLREGS_SIZE) 85 86 /* per-display variables */ 87 struct cg2_softc { 88 struct device sc_dev; /* base device */ 89 struct fbdevice sc_fb; /* frame buffer device */ 90 int sc_phys; /* display RAM (phys addr) */ 91 int sc_pmtype; /* pmap type bits */ 92 struct cg2fb *sc_ctlreg; /* control registers */ 93 }; 94 95 /* autoconfiguration driver */ 96 static void cg2attach __P((struct device *, struct device *, void *)); 97 static int cg2match __P((struct device *, void *, void *)); 98 99 struct cfdriver cgtwocd = { 100 NULL, "cgtwo", cg2match, cg2attach, 101 DV_DULL, sizeof(struct cg2_softc) }; 102 103 /* frame buffer generic driver */ 104 int cg2open(), cg2close(), cg2map(); 105 106 static int cg2gattr __P((struct fbdevice *, struct fbgattr *)); 107 static int cg2gvideo __P((struct fbdevice *, int *)); 108 static int cg2svideo __P((struct fbdevice *, int *)); 109 static int cg2getcmap __P((struct fbdevice *, struct fbcmap *)); 110 static int cg2putcmap __P((struct fbdevice *, struct fbcmap *)); 111 112 static struct fbdriver cg2fbdriver = { 113 cg2open, cg2close, cg2map, cg2gattr, 114 cg2gvideo, cg2svideo, 115 cg2getcmap, cg2putcmap }; 116 117 static void cg2loadcmap __P((struct cg2_softc *, int, int)); 118 static int cg2intr __P((void*)); 119 120 /* 121 * Match a cg2. 122 */ 123 static int 124 cg2match(parent, vcf, args) 125 struct device *parent; 126 void *vcf, *args; 127 { 128 struct confargs *ca = args; 129 struct cg2fb *crp; 130 int x; 131 132 if (ca->ca_paddr == -1) 133 return (0); 134 135 if (ca->ca_bustype != BUS_VME16) 136 return (0); 137 138 /* Look at the value in the ID register. */ 139 crp = (struct cg2fb *) (ca->ca_paddr + CTLREGS_OFF); 140 141 /* The peek returns -1 on bus error. */ 142 x = bus_peek(ca->ca_bustype, &crp->id.reg, 2); 143 if (x == -1) 144 return (0); 145 146 /* XXX */ 147 printf("cg2: id=0x%x\n", x); 148 149 return (1); 150 } 151 152 /* 153 * Attach a display. We need to notice if it is the console, too. 154 */ 155 static void 156 cg2attach(parent, self, args) 157 struct device *parent, *self; 158 void *args; 159 { 160 struct cg2_softc *sc = (struct cg2_softc *)self; 161 struct fbdevice *fb = &sc->sc_fb; 162 struct confargs *ca = args; 163 struct fbtype *fbt; 164 int i, ramsize, pa; 165 166 sc->sc_phys = ca->ca_paddr; 167 sc->sc_pmtype = PMAP_NC | PMAP_VME16; 168 169 sc->sc_ctlreg = (struct cg2fb *) bus_mapin(ca->ca_bustype, 170 ca->ca_paddr + CTLREGS_OFF, CTLREGS_SIZE); 171 172 isr_add_vectored(cg2intr, (void*)sc, 173 ca->ca_intpri, ca->ca_intvec); 174 175 /* 176 * XXX - Initialize? Determine type? 177 */ 178 sc->sc_ctlreg->intrptvec.reg = ca->ca_intvec; 179 sc->sc_ctlreg->status.word = 1; 180 181 fb->fb_driver = &cg2fbdriver; 182 fb->fb_private = sc; 183 fb->fb_name = sc->sc_dev.dv_xname; 184 185 fbt = &fb->fb_fbtype; 186 fbt->fb_type = FBTYPE_SUN2COLOR; 187 fbt->fb_depth = 8; 188 fbt->fb_cmsize = CMSIZE; 189 190 fbt->fb_width = 1152; 191 fbt->fb_height = 900; 192 fbt->fb_size = CG2_MAPPED_SIZE; 193 194 printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height); 195 fb_attach(fb, 2); 196 } 197 198 int 199 cg2open(dev, flags, mode, p) 200 dev_t dev; 201 int flags, mode; 202 struct proc *p; 203 { 204 int unit = minor(dev); 205 206 if (unit >= cgtwocd.cd_ndevs || cgtwocd.cd_devs[unit] == NULL) 207 return (ENXIO); 208 return (0); 209 } 210 211 int 212 cg2close(dev, flags, mode, p) 213 dev_t dev; 214 int flags, mode; 215 struct proc *p; 216 { 217 218 return (0); 219 } 220 221 int 222 cg2ioctl(dev, cmd, data, flags, p) 223 dev_t dev; 224 u_long cmd; 225 caddr_t data; 226 int flags; 227 struct proc *p; 228 { 229 struct cg2_softc *sc = cgtwocd.cd_devs[minor(dev)]; 230 231 return (fbioctlfb(&sc->sc_fb, cmd, data)); 232 } 233 234 /* 235 * Return the address that would map the given device at the given 236 * offset, allowing for the given protection, or return -1 for error. 237 */ 238 int 239 cg2map(dev, off, prot) 240 dev_t dev; 241 int off, prot; 242 { 243 struct cg2_softc *sc = cgtwocd.cd_devs[minor(dev)]; 244 int realoff; 245 246 if (off & PGOFSET) 247 panic("cg2map"); 248 249 if ((unsigned)off >= CG2_MAPPED_LIMIT) 250 return (-1); 251 252 /* 253 * I turned on PMAP_NC here to disable the cache as I was 254 * getting horribly broken behaviour with it on. 255 */ 256 return ((sc->sc_phys + off) | sc->sc_pmtype); 257 } 258 259 /* 260 * Internal ioctl functions. 261 */ 262 263 /* FBIOGATTR: */ 264 static int cg2gattr(fb, fba) 265 struct fbdevice *fb; 266 struct fbgattr *fba; 267 { 268 269 fba->real_type = fb->fb_fbtype.fb_type; 270 fba->owner = 0; /* XXX - TIOCCONS stuff? */ 271 fba->fbtype = fb->fb_fbtype; 272 fba->sattr.flags = 0; 273 fba->sattr.emu_type = fb->fb_fbtype.fb_type; 274 fba->sattr.dev_specific[0] = -1; 275 fba->emu_types[0] = fb->fb_fbtype.fb_type; 276 fba->emu_types[1] = -1; 277 return (0); 278 } 279 280 /* FBIOGVIDEO: */ 281 static int cg2gvideo(fb, on) 282 struct fbdevice *fb; 283 int *on; 284 { 285 struct cg2_softc *sc = fb->fb_private; 286 287 *on = sc->sc_ctlreg->status.reg.video_enab; 288 return (0); 289 } 290 291 /* FBIOSVIDEO: */ 292 static int cg2svideo(fb, on) 293 struct fbdevice *fb; 294 int *on; 295 { 296 struct cg2_softc *sc = fb->fb_private; 297 298 sc->sc_ctlreg->status.reg.video_enab = (*on) & 1; 299 300 return (0); 301 } 302 303 /* FBIOGETCMAP: */ 304 static int cg2getcmap(fb, cmap) 305 struct fbdevice *fb; 306 struct fbcmap *cmap; 307 { 308 struct cg2_softc *sc = fb->fb_private; 309 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 310 int error, start, count, ecount; 311 register u_int i; 312 register u_short *p; 313 314 start = cmap->index; 315 count = cmap->count; 316 ecount = start + count; 317 if (start >= CMSIZE || ecount > CMSIZE) 318 return (EINVAL); 319 320 /* XXX - Wait for retrace? */ 321 322 /* Copy hardware to local arrays. */ 323 p = &sc->sc_ctlreg->redmap[start]; 324 for (i = start; i < ecount; i++) 325 red[i] = *p++; 326 p = &sc->sc_ctlreg->greenmap[start]; 327 for (i = start; i < ecount; i++) 328 green[i] = *p++; 329 p = &sc->sc_ctlreg->bluemap[start]; 330 for (i = start; i < ecount; i++) 331 blue[i] = *p++; 332 333 /* Copy local arrays to user space. */ 334 if ((error = copyout(red + start, cmap->red, count)) != 0) 335 return (error); 336 if ((error = copyout(green + start, cmap->green, count)) != 0) 337 return (error); 338 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 339 return (error); 340 341 return (0); 342 } 343 344 /* FBIOPUTCMAP: */ 345 static int cg2putcmap(fb, cmap) 346 struct fbdevice *fb; 347 struct fbcmap *cmap; 348 { 349 struct cg2_softc *sc = fb->fb_private; 350 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 351 int error, start, count, ecount; 352 register u_int i; 353 register u_short *p; 354 355 start = cmap->index; 356 count = cmap->count; 357 ecount = start + count; 358 if (start >= CMSIZE || ecount > CMSIZE) 359 return (EINVAL); 360 361 /* Copy from user space to local arrays. */ 362 if ((error = copyin(cmap->red, red + start, count)) != 0) 363 return (error); 364 if ((error = copyin(cmap->green, green + start, count)) != 0) 365 return (error); 366 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 367 return (error); 368 369 /* XXX - Wait for retrace? */ 370 371 /* Copy from local arrays to hardware. */ 372 p = &sc->sc_ctlreg->redmap[start]; 373 for (i = start; i < ecount; i++) 374 *p++ = red[i]; 375 p = &sc->sc_ctlreg->greenmap[start]; 376 for (i = start; i < ecount; i++) 377 *p++ = green[i]; 378 p = &sc->sc_ctlreg->bluemap[start]; 379 for (i = start; i < ecount; i++) 380 *p++ = blue[i]; 381 382 return (0); 383 384 } 385 386 static int 387 cg2intr(vsc) 388 void *vsc; 389 { 390 struct cg2_softc *sc = vsc; 391 392 /* XXX - Just disable interrupts for now. */ 393 sc->sc_ctlreg->status.reg.inten = 0; 394 395 printf("cg2intr\n"); 396 return (1); 397 } 398
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