cg2.c revision 1.18
1 /* $NetBSD: cg2.c,v 1.18 2002/09/06 13:18:43 gehenna 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 #define CMSIZE 256 75 76 /* offset to and size of mapped part of frame buffer */ 77 #define PLANEMAP_SIZE 0x100000 78 #define PIXELMAP_SIZE 0x100000 79 #define ROWOPMAP_SIZE 0x100000 80 81 #define CTLREGS_OFF 0x300000 82 #define CTLREGS_SIZE 0x10600 83 84 #define CG2_MAPPED_OFFSET (PLANEMAP_SIZE + PIXELMAP_SIZE) 85 #define CG2_MAPPED_SIZE (CTLREGS_OFF + CTLREGS_SIZE) 86 87 /* per-display variables */ 88 struct cg2_softc { 89 struct device sc_dev; /* base device */ 90 struct fbdevice sc_fb; /* frame buffer device */ 91 int sc_phys; /* display RAM (phys addr) */ 92 int sc_pmtype; /* pmap type bits */ 93 struct cg2fb *sc_ctlreg; /* control registers */ 94 }; 95 96 /* autoconfiguration driver */ 97 static void cg2attach __P((struct device *, struct device *, void *)); 98 static int cg2match __P((struct device *, struct cfdata *, void *)); 99 100 struct cfattach cgtwo_ca = { 101 sizeof(struct cg2_softc), cg2match, cg2attach 102 }; 103 104 extern struct cfdriver cgtwo_cd; 105 106 dev_type_open(cg2open); 107 dev_type_ioctl(cg2ioctl); 108 dev_type_mmap(cg2mmap); 109 110 const struct cdevsw cgtwo_cdevsw = { 111 cg2open, nullclose, noread, nowrite, cg2ioctl, 112 nostop, notty, nopoll, cg2mmap, 113 }; 114 115 static int cg2gattr __P((struct fbdevice *, void *)); 116 static int cg2gvideo __P((struct fbdevice *, void *)); 117 static int cg2svideo __P((struct fbdevice *, void *)); 118 static int cg2getcmap __P((struct fbdevice *, void *)); 119 static int cg2putcmap __P((struct fbdevice *, void *)); 120 121 static struct fbdriver cg2fbdriver = { 122 cg2open, nullclose, cg2mmap, cg2gattr, 123 cg2gvideo, cg2svideo, 124 cg2getcmap, cg2putcmap }; 125 126 static int cg2intr __P((void*)); 127 128 /* 129 * Match a cg2. 130 */ 131 static int 132 cg2match(parent, cf, aux) 133 struct device *parent; 134 struct cfdata *cf; 135 void *aux; 136 { 137 struct confargs *ca = aux; 138 int probe_addr; 139 140 /* No default VME address. */ 141 if (ca->ca_paddr == -1) 142 return (0); 143 144 /* Make sure something is there... */ 145 probe_addr = ca->ca_paddr + CTLREGS_OFF; 146 if (bus_peek(ca->ca_bustype, probe_addr, 1) == -1) 147 return (0); 148 149 /* XXX: look at the ID reg? */ 150 /* printf("cg2: id=0x%x\n", x); */ 151 152 /* Default interrupt priority. */ 153 if (ca->ca_intpri == -1) 154 ca->ca_intpri = 4; 155 156 return (1); 157 } 158 159 /* 160 * Attach a display. We need to notice if it is the console, too. 161 */ 162 static void 163 cg2attach(parent, self, args) 164 struct device *parent, *self; 165 void *args; 166 { 167 struct cg2_softc *sc = (struct cg2_softc *)self; 168 struct fbdevice *fb = &sc->sc_fb; 169 struct confargs *ca = args; 170 struct fbtype *fbt; 171 172 sc->sc_phys = ca->ca_paddr; 173 sc->sc_pmtype = PMAP_NC | PMAP_VME16; 174 175 sc->sc_ctlreg = (struct cg2fb *) bus_mapin(ca->ca_bustype, 176 ca->ca_paddr + CTLREGS_OFF, CTLREGS_SIZE); 177 178 isr_add_vectored(cg2intr, (void*)sc, 179 ca->ca_intpri, ca->ca_intvec); 180 181 /* 182 * XXX - Initialize? Determine type? 183 */ 184 sc->sc_ctlreg->intrptvec.reg = ca->ca_intvec; 185 sc->sc_ctlreg->status.word = 1; 186 187 fb->fb_driver = &cg2fbdriver; 188 fb->fb_private = sc; 189 fb->fb_name = sc->sc_dev.dv_xname; 190 191 fbt = &fb->fb_fbtype; 192 fbt->fb_type = FBTYPE_SUN2COLOR; 193 fbt->fb_depth = 8; 194 fbt->fb_cmsize = CMSIZE; 195 196 fbt->fb_width = 1152; 197 fbt->fb_height = 900; 198 fbt->fb_size = CG2_MAPPED_SIZE; 199 200 printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height); 201 fb_attach(fb, 2); 202 } 203 204 int 205 cg2open(dev, flags, mode, p) 206 dev_t dev; 207 int flags, mode; 208 struct proc *p; 209 { 210 int unit = minor(dev); 211 212 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 213 return (ENXIO); 214 return (0); 215 } 216 217 int 218 cg2ioctl(dev, cmd, data, flags, p) 219 dev_t dev; 220 u_long cmd; 221 caddr_t data; 222 int flags; 223 struct proc *p; 224 { 225 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 226 227 return (fbioctlfb(&sc->sc_fb, cmd, data)); 228 } 229 230 /* 231 * Return the address that would map the given device at the given 232 * offset, allowing for the given protection, or return -1 for error. 233 */ 234 paddr_t 235 cg2mmap(dev, off, prot) 236 dev_t dev; 237 off_t off; 238 int prot; 239 { 240 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 241 242 if (off & PGOFSET) 243 panic("cg2mmap"); 244 245 if (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 u_int i; 312 u_short *p; 313 314 start = cmap->index; 315 count = cmap->count; 316 ecount = start + count; 317 if (start >= CMSIZE || count > CMSIZE - start) 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; 353 u_int start, count, ecount; 354 u_int i; 355 u_short *p; 356 357 start = cmap->index; 358 count = cmap->count; 359 ecount = start + count; 360 if (start >= CMSIZE || count > CMSIZE - start) 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
Indexes created Tue Sep 23 07:09:52 GMT 2025