1 /* $NetBSD: cg2.c,v 1.8 1996/12/17 21:10:38 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/systm.h> 57 #include <sys/conf.h> 58 #include <sys/device.h> 59 #include <sys/ioctl.h> 60 #include <sys/malloc.h> 61 #include <sys/mman.h> 62 #include <sys/proc.h> 63 #include <sys/tty.h> 64 65 #include <vm/vm.h> 66 67 #include <machine/fbio.h> 68 #include <machine/autoconf.h> 69 #include <machine/pmap.h> 70 #include <machine/cg2reg.h> 71 72 #include "fbvar.h" 73 74 cdev_decl(cg2); 75 76 #define CMSIZE 256 77 78 /* offset to and size of mapped part of frame buffer */ 79 #define PLANEMAP_SIZE 0x100000 80 #define PIXELMAP_SIZE 0x100000 81 #define ROWOPMAP_SIZE 0x100000 82 83 #define CTLREGS_OFF 0x300000 84 #define CTLREGS_SIZE 0x10600 85 86 #define CG2_MAPPED_OFFSET (PLANEMAP_SIZE + PIXELMAP_SIZE) 87 #define CG2_MAPPED_SIZE (CTLREGS_OFF + CTLREGS_SIZE) 88 89 /* per-display variables */ 90 struct cg2_softc { 91 struct device sc_dev; /* base device */ 92 struct fbdevice sc_fb; /* frame buffer device */ 93 int sc_phys; /* display RAM (phys addr) */ 94 int sc_pmtype; /* pmap type bits */ 95 struct cg2fb *sc_ctlreg; /* control registers */ 96 }; 97 98 /* autoconfiguration driver */ 99 static void cg2attach __P((struct device *, struct device *, void *)); 100 static int cg2match __P((struct device *, struct cfdata *, void *)); 101 102 struct cfattach cgtwo_ca = { 103 sizeof(struct cg2_softc), cg2match, cg2attach 104 }; 105 106 struct cfdriver cgtwo_cd = { 107 NULL, "cgtwo", DV_DULL 108 }; 109 110 static int cg2gattr __P((struct fbdevice *, void *)); 111 static int cg2gvideo __P((struct fbdevice *, void *)); 112 static int cg2svideo __P((struct fbdevice *, void *)); 113 static int cg2getcmap __P((struct fbdevice *, void *)); 114 static int cg2putcmap __P((struct fbdevice *, void *)); 115 116 static struct fbdriver cg2fbdriver = { 117 cg2open, cg2close, cg2mmap, cg2gattr, 118 cg2gvideo, cg2svideo, 119 cg2getcmap, cg2putcmap }; 120 121 static int cg2intr __P((void*)); 122 123 /* 124 * Match a cg2. 125 */ 126 static int 127 cg2match(parent, cf, args) 128 struct device *parent; 129 struct cfdata *cf; 130 void *args; 131 { 132 struct confargs *ca = args; 133 int x; 134 135 if (ca->ca_paddr == -1) 136 return (0); 137 138 if (ca->ca_bustype != BUS_VME16) 139 return (0); 140 141 x = bus_peek(ca->ca_bustype, ca->ca_paddr + CTLREGS_OFF, 1); 142 if (x == -1) 143 return (0); 144 145 /* XXX */ 146 /* printf("cg2: id=0x%x\n", x); */ 147 148 return (1); 149 } 150 151 /* 152 * Attach a display. We need to notice if it is the console, too. 153 */ 154 static void 155 cg2attach(parent, self, args) 156 struct device *parent, *self; 157 void *args; 158 { 159 struct cg2_softc *sc = (struct cg2_softc *)self; 160 struct fbdevice *fb = &sc->sc_fb; 161 struct confargs *ca = args; 162 struct fbtype *fbt; 163 164 sc->sc_phys = ca->ca_paddr; 165 sc->sc_pmtype = PMAP_NC | PMAP_VME16; 166 167 sc->sc_ctlreg = (struct cg2fb *) bus_mapin(ca->ca_bustype, 168 ca->ca_paddr + CTLREGS_OFF, CTLREGS_SIZE); 169 170 isr_add_vectored(cg2intr, (void*)sc, 171 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 = sc->sc_dev.dv_xname; 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 printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height); 193 fb_attach(fb, 2); 194 } 195 196 int 197 cg2open(dev, flags, mode, p) 198 dev_t dev; 199 int flags, mode; 200 struct proc *p; 201 { 202 int unit = minor(dev); 203 204 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 205 return (ENXIO); 206 return (0); 207 } 208 209 int 210 cg2close(dev, flags, mode, p) 211 dev_t dev; 212 int flags, mode; 213 struct proc *p; 214 { 215 216 return (0); 217 } 218 219 int 220 cg2ioctl(dev, cmd, data, flags, p) 221 dev_t dev; 222 u_long cmd; 223 caddr_t data; 224 int flags; 225 struct proc *p; 226 { 227 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 228 229 return (fbioctlfb(&sc->sc_fb, cmd, data)); 230 } 231 232 /* 233 * Return the address that would map the given device at the given 234 * offset, allowing for the given protection, or return -1 for error. 235 */ 236 int 237 cg2mmap(dev, off, prot) 238 dev_t dev; 239 int off, prot; 240 { 241 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 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, data) 262 struct fbdevice *fb; 263 void *data; 264 { 265 struct fbgattr *fba = data; 266 267 fba->real_type = fb->fb_fbtype.fb_type; 268 fba->owner = 0; /* XXX - TIOCCONS stuff? */ 269 fba->fbtype = fb->fb_fbtype; 270 fba->sattr.flags = 0; 271 fba->sattr.emu_type = fb->fb_fbtype.fb_type; 272 fba->sattr.dev_specific[0] = -1; 273 fba->emu_types[0] = fb->fb_fbtype.fb_type; 274 fba->emu_types[1] = -1; 275 return (0); 276 } 277 278 /* FBIOGVIDEO: */ 279 static int cg2gvideo(fb, data) 280 struct fbdevice *fb; 281 void *data; 282 { 283 int *on = data; 284 struct cg2_softc *sc = fb->fb_private; 285 286 *on = sc->sc_ctlreg->status.reg.video_enab; 287 return (0); 288 } 289 290 /* FBIOSVIDEO: */ 291 static int cg2svideo(fb, data) 292 struct fbdevice *fb; 293 void *data; 294 { 295 int *on = data; 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, data) 305 struct fbdevice *fb; 306 void *data; 307 { 308 struct fbcmap *cmap = data; 309 struct cg2_softc *sc = fb->fb_private; 310 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 311 int error, start, count, ecount; 312 register u_int i; 313 register u_short *p; 314 315 start = cmap->index; 316 count = cmap->count; 317 ecount = start + count; 318 if (start >= CMSIZE || ecount > CMSIZE) 319 return (EINVAL); 320 321 /* XXX - Wait for retrace? */ 322 323 /* Copy hardware to local arrays. */ 324 p = &sc->sc_ctlreg->redmap[start]; 325 for (i = start; i < ecount; i++) 326 red[i] = *p++; 327 p = &sc->sc_ctlreg->greenmap[start]; 328 for (i = start; i < ecount; i++) 329 green[i] = *p++; 330 p = &sc->sc_ctlreg->bluemap[start]; 331 for (i = start; i < ecount; i++) 332 blue[i] = *p++; 333 334 /* Copy local arrays to user space. */ 335 if ((error = copyout(red + start, cmap->red, count)) != 0) 336 return (error); 337 if ((error = copyout(green + start, cmap->green, count)) != 0) 338 return (error); 339 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 340 return (error); 341 342 return (0); 343 } 344 345 /* FBIOPUTCMAP: */ 346 static int cg2putcmap(fb, data) 347 struct fbdevice *fb; 348 void *data; 349 { 350 struct fbcmap *cmap = data; 351 struct cg2_softc *sc = fb->fb_private; 352 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 353 int error, start, count, ecount; 354 register u_int i; 355 register u_short *p; 356 357 start = cmap->index; 358 count = cmap->count; 359 ecount = start + count; 360 if (start >= CMSIZE || ecount > CMSIZE) 361 return (EINVAL); 362 363 /* Copy from user space to local arrays. */ 364 if ((error = copyin(cmap->red, red + start, count)) != 0) 365 return (error); 366 if ((error = copyin(cmap->green, green + start, count)) != 0) 367 return (error); 368 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 369 return (error); 370 371 /* XXX - Wait for retrace? */ 372 373 /* Copy from local arrays to hardware. */ 374 p = &sc->sc_ctlreg->redmap[start]; 375 for (i = start; i < ecount; i++) 376 *p++ = red[i]; 377 p = &sc->sc_ctlreg->greenmap[start]; 378 for (i = start; i < ecount; i++) 379 *p++ = green[i]; 380 p = &sc->sc_ctlreg->bluemap[start]; 381 for (i = start; i < ecount; i++) 382 *p++ = blue[i]; 383 384 return (0); 385 386 } 387 388 static int 389 cg2intr(vsc) 390 void *vsc; 391 { 392 struct cg2_softc *sc = vsc; 393 394 /* XXX - Just disable interrupts for now. */ 395 sc->sc_ctlreg->status.reg.inten = 0; 396 397 printf("cg2intr\n"); 398 return (1); 399 } 400