cg2.c revision 1.5
1 /* $NetBSD: cg2.c,v 1.5 1996/03/17 02:03:43 thorpej 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/cg2reg.h> 68 69 #include "fbvar.h" 70 71 #define CMSIZE 256 72 73 /* offset to and size of mapped part of frame buffer */ 74 #define PLANEMAP_SIZE 0x100000 75 #define PIXELMAP_SIZE 0x100000 76 #define ROWOPMAP_SIZE 0x100000 77 78 #define CTLREGS_OFF 0x300000 79 #define CTLREGS_SIZE 0x10600 80 81 #define CG2_MAPPED_OFFSET (PLANEMAP_SIZE + PIXELMAP_SIZE) 82 #define CG2_MAPPED_SIZE (CTLREGS_OFF + CTLREGS_SIZE) 83 84 /* per-display variables */ 85 struct cg2_softc { 86 struct device sc_dev; /* base device */ 87 struct fbdevice sc_fb; /* frame buffer device */ 88 int sc_phys; /* display RAM (phys addr) */ 89 int sc_pmtype; /* pmap type bits */ 90 struct cg2fb *sc_ctlreg; /* control registers */ 91 }; 92 93 /* autoconfiguration driver */ 94 static void cg2attach __P((struct device *, struct device *, void *)); 95 static int cg2match __P((struct device *, void *, void *)); 96 97 struct cfattach cgtwo_ca = { 98 sizeof(struct cg2_softc), cg2match, cg2attach 99 }; 100 101 struct cfdriver cgtwo_cd = { 102 NULL, "cgtwo", DV_DULL 103 }; 104 105 /* frame buffer generic driver */ 106 int cg2open(), cg2close(), cg2mmap(); 107 108 static int cg2gattr __P((struct fbdevice *, struct fbgattr *)); 109 static int cg2gvideo __P((struct fbdevice *, int *)); 110 static int cg2svideo __P((struct fbdevice *, int *)); 111 static int cg2getcmap __P((struct fbdevice *, struct fbcmap *)); 112 static int cg2putcmap __P((struct fbdevice *, struct fbcmap *)); 113 114 static struct fbdriver cg2fbdriver = { 115 cg2open, cg2close, cg2mmap, cg2gattr, 116 cg2gvideo, cg2svideo, 117 cg2getcmap, cg2putcmap }; 118 119 static void cg2loadcmap __P((struct cg2_softc *, int, int)); 120 static int cg2intr __P((void*)); 121 122 /* 123 * Match a cg2. 124 */ 125 static int 126 cg2match(parent, vcf, args) 127 struct device *parent; 128 void *vcf, *args; 129 { 130 struct confargs *ca = args; 131 int x; 132 133 if (ca->ca_paddr == -1) 134 return (0); 135 136 if (ca->ca_bustype != BUS_VME16) 137 return (0); 138 139 x = bus_peek(ca->ca_bustype, ca->ca_paddr + CTLREGS_OFF, 1); 140 if (x == -1) 141 return (0); 142 143 /* XXX */ 144 /* printf("cg2: id=0x%x\n", x); */ 145 146 return (1); 147 } 148 149 /* 150 * Attach a display. We need to notice if it is the console, too. 151 */ 152 static void 153 cg2attach(parent, self, args) 154 struct device *parent, *self; 155 void *args; 156 { 157 struct cg2_softc *sc = (struct cg2_softc *)self; 158 struct fbdevice *fb = &sc->sc_fb; 159 struct confargs *ca = args; 160 struct fbtype *fbt; 161 int i, ramsize, pa; 162 163 sc->sc_phys = ca->ca_paddr; 164 sc->sc_pmtype = PMAP_NC | PMAP_VME16; 165 166 sc->sc_ctlreg = (struct cg2fb *) bus_mapin(ca->ca_bustype, 167 ca->ca_paddr + CTLREGS_OFF, CTLREGS_SIZE); 168 169 isr_add_vectored(cg2intr, (void*)sc, 170 ca->ca_intpri, ca->ca_intvec); 171 172 /* 173 * XXX - Initialize? Determine type? 174 */ 175 sc->sc_ctlreg->intrptvec.reg = ca->ca_intvec; 176 sc->sc_ctlreg->status.word = 1; 177 178 fb->fb_driver = &cg2fbdriver; 179 fb->fb_private = sc; 180 fb->fb_name = sc->sc_dev.dv_xname; 181 182 fbt = &fb->fb_fbtype; 183 fbt->fb_type = FBTYPE_SUN2COLOR; 184 fbt->fb_depth = 8; 185 fbt->fb_cmsize = CMSIZE; 186 187 fbt->fb_width = 1152; 188 fbt->fb_height = 900; 189 fbt->fb_size = CG2_MAPPED_SIZE; 190 191 printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height); 192 fb_attach(fb, 2); 193 } 194 195 int 196 cg2open(dev, flags, mode, p) 197 dev_t dev; 198 int flags, mode; 199 struct proc *p; 200 { 201 int unit = minor(dev); 202 203 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 204 return (ENXIO); 205 return (0); 206 } 207 208 int 209 cg2close(dev, flags, mode, p) 210 dev_t dev; 211 int flags, mode; 212 struct proc *p; 213 { 214 215 return (0); 216 } 217 218 int 219 cg2ioctl(dev, cmd, data, flags, p) 220 dev_t dev; 221 u_long cmd; 222 caddr_t data; 223 int flags; 224 struct proc *p; 225 { 226 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 227 228 return (fbioctlfb(&sc->sc_fb, cmd, data)); 229 } 230 231 /* 232 * Return the address that would map the given device at the given 233 * offset, allowing for the given protection, or return -1 for error. 234 */ 235 int 236 cg2mmap(dev, off, prot) 237 dev_t dev; 238 int off, prot; 239 { 240 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 241 int realoff; 242 243 if (off & PGOFSET) 244 panic("cg2mmap"); 245 246 if ((unsigned)off >= CG2_MAPPED_SIZE) 247 return (-1); 248 249 /* 250 * I turned on PMAP_NC here to disable the cache as I was 251 * getting horribly broken behaviour with it on. 252 */ 253 return ((sc->sc_phys + off) | sc->sc_pmtype); 254 } 255 256 /* 257 * Internal ioctl functions. 258 */ 259 260 /* FBIOGATTR: */ 261 static int cg2gattr(fb, fba) 262 struct fbdevice *fb; 263 struct fbgattr *fba; 264 { 265 266 fba->real_type = fb->fb_fbtype.fb_type; 267 fba->owner = 0; /* XXX - TIOCCONS stuff? */ 268 fba->fbtype = fb->fb_fbtype; 269 fba->sattr.flags = 0; 270 fba->sattr.emu_type = fb->fb_fbtype.fb_type; 271 fba->sattr.dev_specific[0] = -1; 272 fba->emu_types[0] = fb->fb_fbtype.fb_type; 273 fba->emu_types[1] = -1; 274 return (0); 275 } 276 277 /* FBIOGVIDEO: */ 278 static int cg2gvideo(fb, on) 279 struct fbdevice *fb; 280 int *on; 281 { 282 struct cg2_softc *sc = fb->fb_private; 283 284 *on = sc->sc_ctlreg->status.reg.video_enab; 285 return (0); 286 } 287 288 /* FBIOSVIDEO: */ 289 static int cg2svideo(fb, on) 290 struct fbdevice *fb; 291 int *on; 292 { 293 struct cg2_softc *sc = fb->fb_private; 294 295 sc->sc_ctlreg->status.reg.video_enab = (*on) & 1; 296 297 return (0); 298 } 299 300 /* FBIOGETCMAP: */ 301 static int cg2getcmap(fb, cmap) 302 struct fbdevice *fb; 303 struct fbcmap *cmap; 304 { 305 struct cg2_softc *sc = fb->fb_private; 306 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 307 int error, start, count, ecount; 308 register u_int i; 309 register u_short *p; 310 311 start = cmap->index; 312 count = cmap->count; 313 ecount = start + count; 314 if (start >= CMSIZE || ecount > CMSIZE) 315 return (EINVAL); 316 317 /* XXX - Wait for retrace? */ 318 319 /* Copy hardware to local arrays. */ 320 p = &sc->sc_ctlreg->redmap[start]; 321 for (i = start; i < ecount; i++) 322 red[i] = *p++; 323 p = &sc->sc_ctlreg->greenmap[start]; 324 for (i = start; i < ecount; i++) 325 green[i] = *p++; 326 p = &sc->sc_ctlreg->bluemap[start]; 327 for (i = start; i < ecount; i++) 328 blue[i] = *p++; 329 330 /* Copy local arrays to user space. */ 331 if ((error = copyout(red + start, cmap->red, count)) != 0) 332 return (error); 333 if ((error = copyout(green + start, cmap->green, count)) != 0) 334 return (error); 335 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 336 return (error); 337 338 return (0); 339 } 340 341 /* FBIOPUTCMAP: */ 342 static int cg2putcmap(fb, cmap) 343 struct fbdevice *fb; 344 struct fbcmap *cmap; 345 { 346 struct cg2_softc *sc = fb->fb_private; 347 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 348 int error, start, count, ecount; 349 register u_int i; 350 register u_short *p; 351 352 start = cmap->index; 353 count = cmap->count; 354 ecount = start + count; 355 if (start >= CMSIZE || ecount > CMSIZE) 356 return (EINVAL); 357 358 /* Copy from user space to local arrays. */ 359 if ((error = copyin(cmap->red, red + start, count)) != 0) 360 return (error); 361 if ((error = copyin(cmap->green, green + start, count)) != 0) 362 return (error); 363 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 364 return (error); 365 366 /* XXX - Wait for retrace? */ 367 368 /* Copy from local arrays to hardware. */ 369 p = &sc->sc_ctlreg->redmap[start]; 370 for (i = start; i < ecount; i++) 371 *p++ = red[i]; 372 p = &sc->sc_ctlreg->greenmap[start]; 373 for (i = start; i < ecount; i++) 374 *p++ = green[i]; 375 p = &sc->sc_ctlreg->bluemap[start]; 376 for (i = start; i < ecount; i++) 377 *p++ = blue[i]; 378 379 return (0); 380 381 } 382 383 static int 384 cg2intr(vsc) 385 void *vsc; 386 { 387 struct cg2_softc *sc = vsc; 388 389 /* XXX - Just disable interrupts for now. */ 390 sc->sc_ctlreg->status.reg.inten = 0; 391 392 printf("cg2intr\n"); 393 return (1); 394 } 395
Indexes created Tue Sep 23 07:09:52 GMT 2025