cg2.c revision 1.10
1 /* $NetBSD: cg2.c,v 1.10 1998/01/12 20:32:18 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/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 static int cg2gattr __P((struct fbdevice *, void *)); 107 static int cg2gvideo __P((struct fbdevice *, void *)); 108 static int cg2svideo __P((struct fbdevice *, void *)); 109 static int cg2getcmap __P((struct fbdevice *, void *)); 110 static int cg2putcmap __P((struct fbdevice *, void *)); 111 112 static struct fbdriver cg2fbdriver = { 113 cg2open, cg2close, cg2mmap, cg2gattr, 114 cg2gvideo, cg2svideo, 115 cg2getcmap, cg2putcmap }; 116 117 static int cg2intr __P((void*)); 118 119 /* 120 * Match a cg2. 121 */ 122 static int 123 cg2match(parent, cf, aux) 124 struct device *parent; 125 struct cfdata *cf; 126 void *aux; 127 { 128 struct confargs *ca = aux; 129 int probe_addr; 130 131 /* No default VME address. */ 132 if (ca->ca_paddr == -1) 133 return (0); 134 135 /* Make sure something is there... */ 136 probe_addr = ca->ca_paddr + CTLREGS_OFF; 137 if (bus_peek(ca->ca_bustype, probe_addr, 1) == -1) 138 return (0); 139 140 /* XXX: look at the ID reg? */ 141 /* printf("cg2: id=0x%x\n", x); */ 142 143 /* Default interrupt priority. */ 144 if (ca->ca_intpri == -1) 145 ca->ca_intpri = 4; 146 147 return (1); 148 } 149 150 /* 151 * Attach a display. We need to notice if it is the console, too. 152 */ 153 static void 154 cg2attach(parent, self, args) 155 struct device *parent, *self; 156 void *args; 157 { 158 struct cg2_softc *sc = (struct cg2_softc *)self; 159 struct fbdevice *fb = &sc->sc_fb; 160 struct confargs *ca = args; 161 struct fbtype *fbt; 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)]; 241 242 if (off & PGOFSET) 243 panic("cg2mmap"); 244 245 if ((unsigned)off >= CG2_MAPPED_SIZE) 246 return (-1); 247 248 /* 249 * I turned on PMAP_NC here to disable the cache as I was 250 * getting horribly broken behaviour with it on. 251 */ 252 return ((sc->sc_phys + off) | sc->sc_pmtype); 253 } 254 255 /* 256 * Internal ioctl functions. 257 */ 258 259 /* FBIOGATTR: */ 260 static int cg2gattr(fb, data) 261 struct fbdevice *fb; 262 void *data; 263 { 264 struct fbgattr *fba = data; 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, data) 279 struct fbdevice *fb; 280 void *data; 281 { 282 int *on = data; 283 struct cg2_softc *sc = fb->fb_private; 284 285 *on = sc->sc_ctlreg->status.reg.video_enab; 286 return (0); 287 } 288 289 /* FBIOSVIDEO: */ 290 static int cg2svideo(fb, data) 291 struct fbdevice *fb; 292 void *data; 293 { 294 int *on = data; 295 struct cg2_softc *sc = fb->fb_private; 296 297 sc->sc_ctlreg->status.reg.video_enab = (*on) & 1; 298 299 return (0); 300 } 301 302 /* FBIOGETCMAP: */ 303 static int cg2getcmap(fb, data) 304 struct fbdevice *fb; 305 void *data; 306 { 307 struct fbcmap *cmap = data; 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, data) 346 struct fbdevice *fb; 347 void *data; 348 { 349 struct fbcmap *cmap = data; 350 struct cg2_softc *sc = fb->fb_private; 351 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 352 int error, start, count, ecount; 353 register u_int i; 354 register u_short *p; 355 356 start = cmap->index; 357 count = cmap->count; 358 ecount = start + count; 359 if (start >= CMSIZE || ecount > CMSIZE) 360 return (EINVAL); 361 362 /* Copy from user space to local arrays. */ 363 if ((error = copyin(cmap->red, red + start, count)) != 0) 364 return (error); 365 if ((error = copyin(cmap->green, green + start, count)) != 0) 366 return (error); 367 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 368 return (error); 369 370 /* XXX - Wait for retrace? */ 371 372 /* Copy from local arrays to hardware. */ 373 p = &sc->sc_ctlreg->redmap[start]; 374 for (i = start; i < ecount; i++) 375 *p++ = red[i]; 376 p = &sc->sc_ctlreg->greenmap[start]; 377 for (i = start; i < ecount; i++) 378 *p++ = green[i]; 379 p = &sc->sc_ctlreg->bluemap[start]; 380 for (i = start; i < ecount; i++) 381 *p++ = blue[i]; 382 383 return (0); 384 385 } 386 387 static int 388 cg2intr(vsc) 389 void *vsc; 390 { 391 struct cg2_softc *sc = vsc; 392 393 /* XXX - Just disable interrupts for now. */ 394 sc->sc_ctlreg->status.reg.inten = 0; 395 396 printf("cg2intr\n"); 397 return (1); 398 } 399
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