cg2.c revision 1.23
1 /* $NetBSD: cg2.c,v 1.23 2003/07/15 03:36:14 lukem 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/cdefs.h> 56 __KERNEL_RCSID(0, "$NetBSD: cg2.c,v 1.23 2003/07/15 03:36:14 lukem Exp $"); 57 58 #include <sys/param.h> 59 #include <sys/systm.h> 60 #include <sys/conf.h> 61 #include <sys/device.h> 62 #include <sys/ioctl.h> 63 #include <sys/malloc.h> 64 #include <sys/mman.h> 65 #include <sys/proc.h> 66 #include <sys/tty.h> 67 68 #include <uvm/uvm_extern.h> 69 70 #include <dev/sun/fbio.h> 71 #include <machine/autoconf.h> 72 #include <machine/pmap.h> 73 #include <machine/cg2reg.h> 74 75 #include "fbvar.h" 76 77 #define CMSIZE 256 78 79 /* offset to and size of mapped part of frame buffer */ 80 #define PLANEMAP_SIZE 0x100000 81 #define PIXELMAP_SIZE 0x100000 82 #define ROWOPMAP_SIZE 0x100000 83 84 #define CTLREGS_OFF 0x300000 85 #define CTLREGS_SIZE 0x10600 86 87 #define CG2_MAPPED_OFFSET (PLANEMAP_SIZE + PIXELMAP_SIZE) 88 #define CG2_MAPPED_SIZE (CTLREGS_OFF + CTLREGS_SIZE) 89 90 /* per-display variables */ 91 struct cg2_softc { 92 struct device sc_dev; /* base device */ 93 struct fbdevice sc_fb; /* frame buffer device */ 94 int sc_phys; /* display RAM (phys addr) */ 95 int sc_pmtype; /* pmap type bits */ 96 struct cg2fb *sc_ctlreg; /* control registers */ 97 }; 98 99 /* autoconfiguration driver */ 100 static void cg2attach __P((struct device *, struct device *, void *)); 101 static int cg2match __P((struct device *, struct cfdata *, void *)); 102 103 CFATTACH_DECL(cgtwo, sizeof(struct cg2_softc), 104 cg2match, cg2attach, NULL, NULL); 105 106 extern struct cfdriver cgtwo_cd; 107 108 dev_type_open(cg2open); 109 dev_type_ioctl(cg2ioctl); 110 dev_type_mmap(cg2mmap); 111 112 const struct cdevsw cgtwo_cdevsw = { 113 cg2open, nullclose, noread, nowrite, cg2ioctl, 114 nostop, notty, nopoll, cg2mmap, nokqfilter, 115 }; 116 117 static int cg2gattr __P((struct fbdevice *, void *)); 118 static int cg2gvideo __P((struct fbdevice *, void *)); 119 static int cg2svideo __P((struct fbdevice *, void *)); 120 static int cg2getcmap __P((struct fbdevice *, void *)); 121 static int cg2putcmap __P((struct fbdevice *, void *)); 122 123 static struct fbdriver cg2fbdriver = { 124 cg2open, nullclose, cg2mmap, nokqfilter, cg2gattr, 125 cg2gvideo, cg2svideo, 126 cg2getcmap, cg2putcmap }; 127 128 static int cg2intr __P((void*)); 129 130 /* 131 * Match a cg2. 132 */ 133 static int 134 cg2match(parent, cf, aux) 135 struct device *parent; 136 struct cfdata *cf; 137 void *aux; 138 { 139 struct confargs *ca = aux; 140 int probe_addr; 141 142 /* No default VME address. */ 143 if (ca->ca_paddr == -1) 144 return (0); 145 146 /* Make sure something is there... */ 147 probe_addr = ca->ca_paddr + CTLREGS_OFF; 148 if (bus_peek(ca->ca_bustype, probe_addr, 1) == -1) 149 return (0); 150 151 /* XXX: look at the ID reg? */ 152 /* printf("cg2: id=0x%x\n", x); */ 153 154 /* Default interrupt priority. */ 155 if (ca->ca_intpri == -1) 156 ca->ca_intpri = 4; 157 158 return (1); 159 } 160 161 /* 162 * Attach a display. We need to notice if it is the console, too. 163 */ 164 static void 165 cg2attach(parent, self, args) 166 struct device *parent, *self; 167 void *args; 168 { 169 struct cg2_softc *sc = (struct cg2_softc *)self; 170 struct fbdevice *fb = &sc->sc_fb; 171 struct confargs *ca = args; 172 struct fbtype *fbt; 173 174 sc->sc_phys = ca->ca_paddr; 175 sc->sc_pmtype = PMAP_NC | PMAP_VME16; 176 177 sc->sc_ctlreg = (struct cg2fb *) bus_mapin(ca->ca_bustype, 178 ca->ca_paddr + CTLREGS_OFF, CTLREGS_SIZE); 179 180 isr_add_vectored(cg2intr, (void*)sc, 181 ca->ca_intpri, ca->ca_intvec); 182 183 /* 184 * XXX - Initialize? Determine type? 185 */ 186 sc->sc_ctlreg->intrptvec.reg = ca->ca_intvec; 187 sc->sc_ctlreg->status.word = 1; 188 189 fb->fb_driver = &cg2fbdriver; 190 fb->fb_private = sc; 191 fb->fb_name = sc->sc_dev.dv_xname; 192 193 fbt = &fb->fb_fbtype; 194 fbt->fb_type = FBTYPE_SUN2COLOR; 195 fbt->fb_depth = 8; 196 fbt->fb_cmsize = CMSIZE; 197 198 fbt->fb_width = 1152; 199 fbt->fb_height = 900; 200 fbt->fb_size = CG2_MAPPED_SIZE; 201 202 printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height); 203 fb_attach(fb, 2); 204 } 205 206 int 207 cg2open(dev, flags, mode, p) 208 dev_t dev; 209 int flags, mode; 210 struct proc *p; 211 { 212 int unit = minor(dev); 213 214 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 215 return (ENXIO); 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 paddr_t 237 cg2mmap(dev, off, prot) 238 dev_t dev; 239 off_t off; 240 int prot; 241 { 242 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 243 244 if (off & PGOFSET) 245 panic("cg2mmap"); 246 247 if (off >= CG2_MAPPED_SIZE) 248 return (-1); 249 250 /* 251 * I turned on PMAP_NC here to disable the cache as I was 252 * getting horribly broken behaviour with it on. 253 */ 254 return ((sc->sc_phys + off) | sc->sc_pmtype); 255 } 256 257 /* 258 * Internal ioctl functions. 259 */ 260 261 /* FBIOGATTR: */ 262 static int cg2gattr(fb, data) 263 struct fbdevice *fb; 264 void *data; 265 { 266 struct fbgattr *fba = data; 267 268 fba->real_type = fb->fb_fbtype.fb_type; 269 fba->owner = 0; /* XXX - TIOCCONS stuff? */ 270 fba->fbtype = fb->fb_fbtype; 271 fba->sattr.flags = 0; 272 fba->sattr.emu_type = fb->fb_fbtype.fb_type; 273 fba->sattr.dev_specific[0] = -1; 274 fba->emu_types[0] = fb->fb_fbtype.fb_type; 275 fba->emu_types[1] = -1; 276 return (0); 277 } 278 279 /* FBIOGVIDEO: */ 280 static int cg2gvideo(fb, data) 281 struct fbdevice *fb; 282 void *data; 283 { 284 int *on = data; 285 struct cg2_softc *sc = fb->fb_private; 286 287 *on = sc->sc_ctlreg->status.reg.video_enab; 288 return (0); 289 } 290 291 /* FBIOSVIDEO: */ 292 static int cg2svideo(fb, data) 293 struct fbdevice *fb; 294 void *data; 295 { 296 int *on = data; 297 struct cg2_softc *sc = fb->fb_private; 298 299 sc->sc_ctlreg->status.reg.video_enab = (*on) & 1; 300 301 return (0); 302 } 303 304 /* FBIOGETCMAP: */ 305 static int cg2getcmap(fb, data) 306 struct fbdevice *fb; 307 void *data; 308 { 309 struct fbcmap *cmap = data; 310 struct cg2_softc *sc = fb->fb_private; 311 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 312 int error, start, count, ecount; 313 u_int i; 314 u_short *p; 315 316 start = cmap->index; 317 count = cmap->count; 318 ecount = start + count; 319 if (start >= CMSIZE || count > CMSIZE - start) 320 return (EINVAL); 321 322 /* XXX - Wait for retrace? */ 323 324 /* Copy hardware to local arrays. */ 325 p = &sc->sc_ctlreg->redmap[start]; 326 for (i = start; i < ecount; i++) 327 red[i] = *p++; 328 p = &sc->sc_ctlreg->greenmap[start]; 329 for (i = start; i < ecount; i++) 330 green[i] = *p++; 331 p = &sc->sc_ctlreg->bluemap[start]; 332 for (i = start; i < ecount; i++) 333 blue[i] = *p++; 334 335 /* Copy local arrays to user space. */ 336 if ((error = copyout(red + start, cmap->red, count)) != 0) 337 return (error); 338 if ((error = copyout(green + start, cmap->green, count)) != 0) 339 return (error); 340 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 341 return (error); 342 343 return (0); 344 } 345 346 /* FBIOPUTCMAP: */ 347 static int cg2putcmap(fb, data) 348 struct fbdevice *fb; 349 void *data; 350 { 351 struct fbcmap *cmap = data; 352 struct cg2_softc *sc = fb->fb_private; 353 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 354 int error; 355 u_int start, count, ecount; 356 u_int i; 357 u_short *p; 358 359 start = cmap->index; 360 count = cmap->count; 361 ecount = start + count; 362 if (start >= CMSIZE || count > CMSIZE - start) 363 return (EINVAL); 364 365 /* Copy from user space to local arrays. */ 366 if ((error = copyin(cmap->red, red + start, count)) != 0) 367 return (error); 368 if ((error = copyin(cmap->green, green + start, count)) != 0) 369 return (error); 370 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 371 return (error); 372 373 /* XXX - Wait for retrace? */ 374 375 /* Copy from local arrays to hardware. */ 376 p = &sc->sc_ctlreg->redmap[start]; 377 for (i = start; i < ecount; i++) 378 *p++ = red[i]; 379 p = &sc->sc_ctlreg->greenmap[start]; 380 for (i = start; i < ecount; i++) 381 *p++ = green[i]; 382 p = &sc->sc_ctlreg->bluemap[start]; 383 for (i = start; i < ecount; i++) 384 *p++ = blue[i]; 385 386 return (0); 387 388 } 389 390 static int 391 cg2intr(vsc) 392 void *vsc; 393 { 394 struct cg2_softc *sc = vsc; 395 396 /* XXX - Just disable interrupts for now. */ 397 sc->sc_ctlreg->status.reg.inten = 0; 398 399 printf("cg2intr\n"); 400 return (1); 401 } 402
Indexes created Mon Sep 22 21:09:42 GMT 2025