cg2.c revision 1.16
1 /* $NetBSD: cg2.c,v 1.16 2001/09/19 18:10:34 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 <uvm/uvm_extern.h> 66 67 #include <dev/sun/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 extern struct cfdriver cgtwo_cd; 107 108 static int cg2gattr __P((struct fbdevice *, void *)); 109 static int cg2gvideo __P((struct fbdevice *, void *)); 110 static int cg2svideo __P((struct fbdevice *, void *)); 111 static int cg2getcmap __P((struct fbdevice *, void *)); 112 static int cg2putcmap __P((struct fbdevice *, void *)); 113 114 static struct fbdriver cg2fbdriver = { 115 cg2open, cg2close, cg2mmap, cg2gattr, 116 cg2gvideo, cg2svideo, 117 cg2getcmap, cg2putcmap }; 118 119 static int cg2intr __P((void*)); 120 121 /* 122 * Match a cg2. 123 */ 124 static int 125 cg2match(parent, cf, aux) 126 struct device *parent; 127 struct cfdata *cf; 128 void *aux; 129 { 130 struct confargs *ca = aux; 131 int probe_addr; 132 133 /* No default VME address. */ 134 if (ca->ca_paddr == -1) 135 return (0); 136 137 /* Make sure something is there... */ 138 probe_addr = ca->ca_paddr + CTLREGS_OFF; 139 if (bus_peek(ca->ca_bustype, probe_addr, 1) == -1) 140 return (0); 141 142 /* XXX: look at the ID reg? */ 143 /* printf("cg2: id=0x%x\n", x); */ 144 145 /* Default interrupt priority. */ 146 if (ca->ca_intpri == -1) 147 ca->ca_intpri = 4; 148 149 return (1); 150 } 151 152 /* 153 * Attach a display. We need to notice if it is the console, too. 154 */ 155 static void 156 cg2attach(parent, self, args) 157 struct device *parent, *self; 158 void *args; 159 { 160 struct cg2_softc *sc = (struct cg2_softc *)self; 161 struct fbdevice *fb = &sc->sc_fb; 162 struct confargs *ca = args; 163 struct fbtype *fbt; 164 165 sc->sc_phys = ca->ca_paddr; 166 sc->sc_pmtype = PMAP_NC | PMAP_VME16; 167 168 sc->sc_ctlreg = (struct cg2fb *) bus_mapin(ca->ca_bustype, 169 ca->ca_paddr + CTLREGS_OFF, CTLREGS_SIZE); 170 171 isr_add_vectored(cg2intr, (void*)sc, 172 ca->ca_intpri, ca->ca_intvec); 173 174 /* 175 * XXX - Initialize? Determine type? 176 */ 177 sc->sc_ctlreg->intrptvec.reg = ca->ca_intvec; 178 sc->sc_ctlreg->status.word = 1; 179 180 fb->fb_driver = &cg2fbdriver; 181 fb->fb_private = sc; 182 fb->fb_name = sc->sc_dev.dv_xname; 183 184 fbt = &fb->fb_fbtype; 185 fbt->fb_type = FBTYPE_SUN2COLOR; 186 fbt->fb_depth = 8; 187 fbt->fb_cmsize = CMSIZE; 188 189 fbt->fb_width = 1152; 190 fbt->fb_height = 900; 191 fbt->fb_size = CG2_MAPPED_SIZE; 192 193 printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height); 194 fb_attach(fb, 2); 195 } 196 197 int 198 cg2open(dev, flags, mode, p) 199 dev_t dev; 200 int flags, mode; 201 struct proc *p; 202 { 203 int unit = minor(dev); 204 205 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 206 return (ENXIO); 207 return (0); 208 } 209 210 int 211 cg2close(dev, flags, mode, p) 212 dev_t dev; 213 int flags, mode; 214 struct proc *p; 215 { 216 217 return (0); 218 } 219 220 int 221 cg2ioctl(dev, cmd, data, flags, p) 222 dev_t dev; 223 u_long cmd; 224 caddr_t data; 225 int flags; 226 struct proc *p; 227 { 228 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 229 230 return (fbioctlfb(&sc->sc_fb, cmd, data)); 231 } 232 233 /* 234 * Return the address that would map the given device at the given 235 * offset, allowing for the given protection, or return -1 for error. 236 */ 237 paddr_t 238 cg2mmap(dev, off, prot) 239 dev_t dev; 240 off_t off; 241 int prot; 242 { 243 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 244 245 if (off & PGOFSET) 246 panic("cg2mmap"); 247 248 if (off >= CG2_MAPPED_SIZE) 249 return (-1); 250 251 /* 252 * I turned on PMAP_NC here to disable the cache as I was 253 * getting horribly broken behaviour with it on. 254 */ 255 return ((sc->sc_phys + off) | sc->sc_pmtype); 256 } 257 258 /* 259 * Internal ioctl functions. 260 */ 261 262 /* FBIOGATTR: */ 263 static int cg2gattr(fb, data) 264 struct fbdevice *fb; 265 void *data; 266 { 267 struct fbgattr *fba = data; 268 269 fba->real_type = fb->fb_fbtype.fb_type; 270 fba->owner = 0; /* XXX - TIOCCONS stuff? */ 271 fba->fbtype = fb->fb_fbtype; 272 fba->sattr.flags = 0; 273 fba->sattr.emu_type = fb->fb_fbtype.fb_type; 274 fba->sattr.dev_specific[0] = -1; 275 fba->emu_types[0] = fb->fb_fbtype.fb_type; 276 fba->emu_types[1] = -1; 277 return (0); 278 } 279 280 /* FBIOGVIDEO: */ 281 static int cg2gvideo(fb, data) 282 struct fbdevice *fb; 283 void *data; 284 { 285 int *on = data; 286 struct cg2_softc *sc = fb->fb_private; 287 288 *on = sc->sc_ctlreg->status.reg.video_enab; 289 return (0); 290 } 291 292 /* FBIOSVIDEO: */ 293 static int cg2svideo(fb, data) 294 struct fbdevice *fb; 295 void *data; 296 { 297 int *on = data; 298 struct cg2_softc *sc = fb->fb_private; 299 300 sc->sc_ctlreg->status.reg.video_enab = (*on) & 1; 301 302 return (0); 303 } 304 305 /* FBIOGETCMAP: */ 306 static int cg2getcmap(fb, data) 307 struct fbdevice *fb; 308 void *data; 309 { 310 struct fbcmap *cmap = data; 311 struct cg2_softc *sc = fb->fb_private; 312 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 313 int error, start, count, ecount; 314 u_int i; 315 u_short *p; 316 317 start = cmap->index; 318 count = cmap->count; 319 ecount = start + count; 320 if (start >= CMSIZE || ecount > CMSIZE) 321 return (EINVAL); 322 323 /* XXX - Wait for retrace? */ 324 325 /* Copy hardware to local arrays. */ 326 p = &sc->sc_ctlreg->redmap[start]; 327 for (i = start; i < ecount; i++) 328 red[i] = *p++; 329 p = &sc->sc_ctlreg->greenmap[start]; 330 for (i = start; i < ecount; i++) 331 green[i] = *p++; 332 p = &sc->sc_ctlreg->bluemap[start]; 333 for (i = start; i < ecount; i++) 334 blue[i] = *p++; 335 336 /* Copy local arrays to user space. */ 337 if ((error = copyout(red + start, cmap->red, count)) != 0) 338 return (error); 339 if ((error = copyout(green + start, cmap->green, count)) != 0) 340 return (error); 341 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 342 return (error); 343 344 return (0); 345 } 346 347 /* FBIOPUTCMAP: */ 348 static int cg2putcmap(fb, data) 349 struct fbdevice *fb; 350 void *data; 351 { 352 struct fbcmap *cmap = data; 353 struct cg2_softc *sc = fb->fb_private; 354 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 355 int error; 356 u_int start, count, ecount; 357 u_int i; 358 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
Indexes created Mon Sep 22 13:09:51 GMT 2025