cg2.c revision 1.3
1 /* $NetBSD: cg2.c,v 1.3 1995/04/10 05:45:27 mycroft 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 cfdriver cgtwocd = { 98 NULL, "cgtwo", cg2match, cg2attach, 99 DV_DULL, sizeof(struct cg2_softc) }; 100 101 /* frame buffer generic driver */ 102 int cg2open(), cg2close(), cg2mmap(); 103 104 static int cg2gattr __P((struct fbdevice *, struct fbgattr *)); 105 static int cg2gvideo __P((struct fbdevice *, int *)); 106 static int cg2svideo __P((struct fbdevice *, int *)); 107 static int cg2getcmap __P((struct fbdevice *, struct fbcmap *)); 108 static int cg2putcmap __P((struct fbdevice *, struct fbcmap *)); 109 110 static struct fbdriver cg2fbdriver = { 111 cg2open, cg2close, cg2map, cg2gattr, 112 cg2gvideo, cg2svideo, 113 cg2getcmap, cg2putcmap }; 114 115 static void cg2loadcmap __P((struct cg2_softc *, int, int)); 116 static int cg2intr __P((void*)); 117 118 /* 119 * Match a cg2. 120 */ 121 static int 122 cg2match(parent, vcf, args) 123 struct device *parent; 124 void *vcf, *args; 125 { 126 struct confargs *ca = args; 127 int x; 128 129 if (ca->ca_paddr == -1) 130 return (0); 131 132 if (ca->ca_bustype != BUS_VME16) 133 return (0); 134 135 x = bus_peek(ca->ca_bustype, ca->ca_paddr + CTLREGS_OFF, 1); 136 if (x == -1) 137 return (0); 138 139 /* XXX */ 140 /* printf("cg2: id=0x%x\n", x); */ 141 142 return (1); 143 } 144 145 /* 146 * Attach a display. We need to notice if it is the console, too. 147 */ 148 static void 149 cg2attach(parent, self, args) 150 struct device *parent, *self; 151 void *args; 152 { 153 struct cg2_softc *sc = (struct cg2_softc *)self; 154 struct fbdevice *fb = &sc->sc_fb; 155 struct confargs *ca = args; 156 struct fbtype *fbt; 157 int i, ramsize, pa; 158 159 sc->sc_phys = ca->ca_paddr; 160 sc->sc_pmtype = PMAP_NC | PMAP_VME16; 161 162 sc->sc_ctlreg = (struct cg2fb *) bus_mapin(ca->ca_bustype, 163 ca->ca_paddr + CTLREGS_OFF, CTLREGS_SIZE); 164 165 isr_add_vectored(cg2intr, (void*)sc, 166 ca->ca_intpri, ca->ca_intvec); 167 168 /* 169 * XXX - Initialize? Determine type? 170 */ 171 sc->sc_ctlreg->intrptvec.reg = ca->ca_intvec; 172 sc->sc_ctlreg->status.word = 1; 173 174 fb->fb_driver = &cg2fbdriver; 175 fb->fb_private = sc; 176 fb->fb_name = sc->sc_dev.dv_xname; 177 178 fbt = &fb->fb_fbtype; 179 fbt->fb_type = FBTYPE_SUN2COLOR; 180 fbt->fb_depth = 8; 181 fbt->fb_cmsize = CMSIZE; 182 183 fbt->fb_width = 1152; 184 fbt->fb_height = 900; 185 fbt->fb_size = CG2_MAPPED_SIZE; 186 187 printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height); 188 fb_attach(fb, 2); 189 } 190 191 int 192 cg2open(dev, flags, mode, p) 193 dev_t dev; 194 int flags, mode; 195 struct proc *p; 196 { 197 int unit = minor(dev); 198 199 if (unit >= cgtwocd.cd_ndevs || cgtwocd.cd_devs[unit] == NULL) 200 return (ENXIO); 201 return (0); 202 } 203 204 int 205 cg2close(dev, flags, mode, p) 206 dev_t dev; 207 int flags, mode; 208 struct proc *p; 209 { 210 211 return (0); 212 } 213 214 int 215 cg2ioctl(dev, cmd, data, flags, p) 216 dev_t dev; 217 u_long cmd; 218 caddr_t data; 219 int flags; 220 struct proc *p; 221 { 222 struct cg2_softc *sc = cgtwocd.cd_devs[minor(dev)]; 223 224 return (fbioctlfb(&sc->sc_fb, cmd, data)); 225 } 226 227 /* 228 * Return the address that would map the given device at the given 229 * offset, allowing for the given protection, or return -1 for error. 230 */ 231 int 232 cg2mmap(dev, off, prot) 233 dev_t dev; 234 int off, prot; 235 { 236 struct cg2_softc *sc = cgtwocd.cd_devs[minor(dev)]; 237 int realoff; 238 239 if (off & PGOFSET) 240 panic("cg2map"); 241 242 if ((unsigned)off >= CG2_MAPPED_SIZE) 243 return (-1); 244 245 /* 246 * I turned on PMAP_NC here to disable the cache as I was 247 * getting horribly broken behaviour with it on. 248 */ 249 return ((sc->sc_phys + off) | sc->sc_pmtype); 250 } 251 252 /* 253 * Internal ioctl functions. 254 */ 255 256 /* FBIOGATTR: */ 257 static int cg2gattr(fb, fba) 258 struct fbdevice *fb; 259 struct fbgattr *fba; 260 { 261 262 fba->real_type = fb->fb_fbtype.fb_type; 263 fba->owner = 0; /* XXX - TIOCCONS stuff? */ 264 fba->fbtype = fb->fb_fbtype; 265 fba->sattr.flags = 0; 266 fba->sattr.emu_type = fb->fb_fbtype.fb_type; 267 fba->sattr.dev_specific[0] = -1; 268 fba->emu_types[0] = fb->fb_fbtype.fb_type; 269 fba->emu_types[1] = -1; 270 return (0); 271 } 272 273 /* FBIOGVIDEO: */ 274 static int cg2gvideo(fb, on) 275 struct fbdevice *fb; 276 int *on; 277 { 278 struct cg2_softc *sc = fb->fb_private; 279 280 *on = sc->sc_ctlreg->status.reg.video_enab; 281 return (0); 282 } 283 284 /* FBIOSVIDEO: */ 285 static int cg2svideo(fb, on) 286 struct fbdevice *fb; 287 int *on; 288 { 289 struct cg2_softc *sc = fb->fb_private; 290 291 sc->sc_ctlreg->status.reg.video_enab = (*on) & 1; 292 293 return (0); 294 } 295 296 /* FBIOGETCMAP: */ 297 static int cg2getcmap(fb, cmap) 298 struct fbdevice *fb; 299 struct fbcmap *cmap; 300 { 301 struct cg2_softc *sc = fb->fb_private; 302 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 303 int error, start, count, ecount; 304 register u_int i; 305 register u_short *p; 306 307 start = cmap->index; 308 count = cmap->count; 309 ecount = start + count; 310 if (start >= CMSIZE || ecount > CMSIZE) 311 return (EINVAL); 312 313 /* XXX - Wait for retrace? */ 314 315 /* Copy hardware to local arrays. */ 316 p = &sc->sc_ctlreg->redmap[start]; 317 for (i = start; i < ecount; i++) 318 red[i] = *p++; 319 p = &sc->sc_ctlreg->greenmap[start]; 320 for (i = start; i < ecount; i++) 321 green[i] = *p++; 322 p = &sc->sc_ctlreg->bluemap[start]; 323 for (i = start; i < ecount; i++) 324 blue[i] = *p++; 325 326 /* Copy local arrays to user space. */ 327 if ((error = copyout(red + start, cmap->red, count)) != 0) 328 return (error); 329 if ((error = copyout(green + start, cmap->green, count)) != 0) 330 return (error); 331 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 332 return (error); 333 334 return (0); 335 } 336 337 /* FBIOPUTCMAP: */ 338 static int cg2putcmap(fb, cmap) 339 struct fbdevice *fb; 340 struct fbcmap *cmap; 341 { 342 struct cg2_softc *sc = fb->fb_private; 343 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 344 int error, start, count, ecount; 345 register u_int i; 346 register u_short *p; 347 348 start = cmap->index; 349 count = cmap->count; 350 ecount = start + count; 351 if (start >= CMSIZE || ecount > CMSIZE) 352 return (EINVAL); 353 354 /* Copy from user space to local arrays. */ 355 if ((error = copyin(cmap->red, red + start, count)) != 0) 356 return (error); 357 if ((error = copyin(cmap->green, green + start, count)) != 0) 358 return (error); 359 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 360 return (error); 361 362 /* XXX - Wait for retrace? */ 363 364 /* Copy from local arrays to hardware. */ 365 p = &sc->sc_ctlreg->redmap[start]; 366 for (i = start; i < ecount; i++) 367 *p++ = red[i]; 368 p = &sc->sc_ctlreg->greenmap[start]; 369 for (i = start; i < ecount; i++) 370 *p++ = green[i]; 371 p = &sc->sc_ctlreg->bluemap[start]; 372 for (i = start; i < ecount; i++) 373 *p++ = blue[i]; 374 375 return (0); 376 377 } 378 379 static int 380 cg2intr(vsc) 381 void *vsc; 382 { 383 struct cg2_softc *sc = vsc; 384 385 /* XXX - Just disable interrupts for now. */ 386 sc->sc_ctlreg->status.reg.inten = 0; 387 388 printf("cg2intr\n"); 389 return (1); 390 } 391
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