cg2.c revision 1.9
1 /* $NetBSD: cg2.c,v 1.9 1997/10/17 03:43:56 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, aux) 128 struct device *parent; 129 struct cfdata *cf; 130 void *aux; 131 { 132 struct confargs *ca = aux; 133 int probe_addr; 134 135 /* No default VME address. */ 136 if (ca->ca_paddr == -1) 137 return (0); 138 139 /* Make sure something is there... */ 140 probe_addr = ca->ca_paddr + CTLREGS_OFF; 141 if (bus_peek(ca->ca_bustype, probe_addr, 1) == -1) 142 return (0); 143 144 /* XXX: look at the ID reg? */ 145 /* printf("cg2: id=0x%x\n", x); */ 146 147 /* Default interrupt priority. */ 148 if (ca->ca_intpri == -1) 149 ca->ca_intpri = 4; 150 151 return (1); 152 } 153 154 /* 155 * Attach a display. We need to notice if it is the console, too. 156 */ 157 static void 158 cg2attach(parent, self, args) 159 struct device *parent, *self; 160 void *args; 161 { 162 struct cg2_softc *sc = (struct cg2_softc *)self; 163 struct fbdevice *fb = &sc->sc_fb; 164 struct confargs *ca = args; 165 struct fbtype *fbt; 166 167 sc->sc_phys = ca->ca_paddr; 168 sc->sc_pmtype = PMAP_NC | PMAP_VME16; 169 170 sc->sc_ctlreg = (struct cg2fb *) bus_mapin(ca->ca_bustype, 171 ca->ca_paddr + CTLREGS_OFF, CTLREGS_SIZE); 172 173 isr_add_vectored(cg2intr, (void*)sc, 174 ca->ca_intpri, ca->ca_intvec); 175 176 /* 177 * XXX - Initialize? Determine type? 178 */ 179 sc->sc_ctlreg->intrptvec.reg = ca->ca_intvec; 180 sc->sc_ctlreg->status.word = 1; 181 182 fb->fb_driver = &cg2fbdriver; 183 fb->fb_private = sc; 184 fb->fb_name = sc->sc_dev.dv_xname; 185 186 fbt = &fb->fb_fbtype; 187 fbt->fb_type = FBTYPE_SUN2COLOR; 188 fbt->fb_depth = 8; 189 fbt->fb_cmsize = CMSIZE; 190 191 fbt->fb_width = 1152; 192 fbt->fb_height = 900; 193 fbt->fb_size = CG2_MAPPED_SIZE; 194 195 printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height); 196 fb_attach(fb, 2); 197 } 198 199 int 200 cg2open(dev, flags, mode, p) 201 dev_t dev; 202 int flags, mode; 203 struct proc *p; 204 { 205 int unit = minor(dev); 206 207 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 208 return (ENXIO); 209 return (0); 210 } 211 212 int 213 cg2close(dev, flags, mode, p) 214 dev_t dev; 215 int flags, mode; 216 struct proc *p; 217 { 218 219 return (0); 220 } 221 222 int 223 cg2ioctl(dev, cmd, data, flags, p) 224 dev_t dev; 225 u_long cmd; 226 caddr_t data; 227 int flags; 228 struct proc *p; 229 { 230 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 231 232 return (fbioctlfb(&sc->sc_fb, cmd, data)); 233 } 234 235 /* 236 * Return the address that would map the given device at the given 237 * offset, allowing for the given protection, or return -1 for error. 238 */ 239 int 240 cg2mmap(dev, off, prot) 241 dev_t dev; 242 int off, prot; 243 { 244 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 245 246 if (off & PGOFSET) 247 panic("cg2mmap"); 248 249 if ((unsigned)off >= CG2_MAPPED_SIZE) 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, data) 265 struct fbdevice *fb; 266 void *data; 267 { 268 struct fbgattr *fba = data; 269 270 fba->real_type = fb->fb_fbtype.fb_type; 271 fba->owner = 0; /* XXX - TIOCCONS stuff? */ 272 fba->fbtype = fb->fb_fbtype; 273 fba->sattr.flags = 0; 274 fba->sattr.emu_type = fb->fb_fbtype.fb_type; 275 fba->sattr.dev_specific[0] = -1; 276 fba->emu_types[0] = fb->fb_fbtype.fb_type; 277 fba->emu_types[1] = -1; 278 return (0); 279 } 280 281 /* FBIOGVIDEO: */ 282 static int cg2gvideo(fb, data) 283 struct fbdevice *fb; 284 void *data; 285 { 286 int *on = data; 287 struct cg2_softc *sc = fb->fb_private; 288 289 *on = sc->sc_ctlreg->status.reg.video_enab; 290 return (0); 291 } 292 293 /* FBIOSVIDEO: */ 294 static int cg2svideo(fb, data) 295 struct fbdevice *fb; 296 void *data; 297 { 298 int *on = data; 299 struct cg2_softc *sc = fb->fb_private; 300 301 sc->sc_ctlreg->status.reg.video_enab = (*on) & 1; 302 303 return (0); 304 } 305 306 /* FBIOGETCMAP: */ 307 static int cg2getcmap(fb, data) 308 struct fbdevice *fb; 309 void *data; 310 { 311 struct fbcmap *cmap = data; 312 struct cg2_softc *sc = fb->fb_private; 313 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 314 int error, start, count, ecount; 315 register u_int i; 316 register u_short *p; 317 318 start = cmap->index; 319 count = cmap->count; 320 ecount = start + count; 321 if (start >= CMSIZE || ecount > CMSIZE) 322 return (EINVAL); 323 324 /* XXX - Wait for retrace? */ 325 326 /* Copy hardware to local arrays. */ 327 p = &sc->sc_ctlreg->redmap[start]; 328 for (i = start; i < ecount; i++) 329 red[i] = *p++; 330 p = &sc->sc_ctlreg->greenmap[start]; 331 for (i = start; i < ecount; i++) 332 green[i] = *p++; 333 p = &sc->sc_ctlreg->bluemap[start]; 334 for (i = start; i < ecount; i++) 335 blue[i] = *p++; 336 337 /* Copy local arrays to user space. */ 338 if ((error = copyout(red + start, cmap->red, count)) != 0) 339 return (error); 340 if ((error = copyout(green + start, cmap->green, count)) != 0) 341 return (error); 342 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 343 return (error); 344 345 return (0); 346 } 347 348 /* FBIOPUTCMAP: */ 349 static int cg2putcmap(fb, data) 350 struct fbdevice *fb; 351 void *data; 352 { 353 struct fbcmap *cmap = data; 354 struct cg2_softc *sc = fb->fb_private; 355 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 356 int error, start, count, ecount; 357 register u_int i; 358 register u_short *p; 359 360 start = cmap->index; 361 count = cmap->count; 362 ecount = start + count; 363 if (start >= CMSIZE || ecount > CMSIZE) 364 return (EINVAL); 365 366 /* Copy from user space to local arrays. */ 367 if ((error = copyin(cmap->red, red + start, count)) != 0) 368 return (error); 369 if ((error = copyin(cmap->green, green + start, count)) != 0) 370 return (error); 371 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 372 return (error); 373 374 /* XXX - Wait for retrace? */ 375 376 /* Copy from local arrays to hardware. */ 377 p = &sc->sc_ctlreg->redmap[start]; 378 for (i = start; i < ecount; i++) 379 *p++ = red[i]; 380 p = &sc->sc_ctlreg->greenmap[start]; 381 for (i = start; i < ecount; i++) 382 *p++ = green[i]; 383 p = &sc->sc_ctlreg->bluemap[start]; 384 for (i = start; i < ecount; i++) 385 *p++ = blue[i]; 386 387 return (0); 388 389 } 390 391 static int 392 cg2intr(vsc) 393 void *vsc; 394 { 395 struct cg2_softc *sc = vsc; 396 397 /* XXX - Just disable interrupts for now. */ 398 sc->sc_ctlreg->status.reg.inten = 0; 399 400 printf("cg2intr\n"); 401 return (1); 402 } 403
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