cg2.c revision 1.24
1 /* $NetBSD: cg2.c,v 1.24 2003/08/07 16:29:54 agc 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. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: @(#)cgthree.c 8.2 (Berkeley) 10/30/93 41 */ 42 43 /* 44 * color display (cg2) driver. 45 * 46 * Does not handle interrupts, even though they can occur. 47 * 48 * XXX should defer colormap updates to vertical retrace interrupts 49 */ 50 51 #include <sys/cdefs.h> 52 __KERNEL_RCSID(0, "$NetBSD: cg2.c,v 1.24 2003/08/07 16:29:54 agc Exp $"); 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/conf.h> 57 #include <sys/device.h> 58 #include <sys/ioctl.h> 59 #include <sys/malloc.h> 60 #include <sys/mman.h> 61 #include <sys/proc.h> 62 #include <sys/tty.h> 63 64 #include <uvm/uvm_extern.h> 65 66 #include <dev/sun/fbio.h> 67 #include <machine/autoconf.h> 68 #include <machine/pmap.h> 69 #include <machine/cg2reg.h> 70 71 #include "fbvar.h" 72 73 #define CMSIZE 256 74 75 /* offset to and size of mapped part of frame buffer */ 76 #define PLANEMAP_SIZE 0x100000 77 #define PIXELMAP_SIZE 0x100000 78 #define ROWOPMAP_SIZE 0x100000 79 80 #define CTLREGS_OFF 0x300000 81 #define CTLREGS_SIZE 0x10600 82 83 #define CG2_MAPPED_OFFSET (PLANEMAP_SIZE + PIXELMAP_SIZE) 84 #define CG2_MAPPED_SIZE (CTLREGS_OFF + CTLREGS_SIZE) 85 86 /* per-display variables */ 87 struct cg2_softc { 88 struct device sc_dev; /* base device */ 89 struct fbdevice sc_fb; /* frame buffer device */ 90 int sc_phys; /* display RAM (phys addr) */ 91 int sc_pmtype; /* pmap type bits */ 92 struct cg2fb *sc_ctlreg; /* control registers */ 93 }; 94 95 /* autoconfiguration driver */ 96 static void cg2attach __P((struct device *, struct device *, void *)); 97 static int cg2match __P((struct device *, struct cfdata *, void *)); 98 99 CFATTACH_DECL(cgtwo, sizeof(struct cg2_softc), 100 cg2match, cg2attach, NULL, NULL); 101 102 extern struct cfdriver cgtwo_cd; 103 104 dev_type_open(cg2open); 105 dev_type_ioctl(cg2ioctl); 106 dev_type_mmap(cg2mmap); 107 108 const struct cdevsw cgtwo_cdevsw = { 109 cg2open, nullclose, noread, nowrite, cg2ioctl, 110 nostop, notty, nopoll, cg2mmap, nokqfilter, 111 }; 112 113 static int cg2gattr __P((struct fbdevice *, void *)); 114 static int cg2gvideo __P((struct fbdevice *, void *)); 115 static int cg2svideo __P((struct fbdevice *, void *)); 116 static int cg2getcmap __P((struct fbdevice *, void *)); 117 static int cg2putcmap __P((struct fbdevice *, void *)); 118 119 static struct fbdriver cg2fbdriver = { 120 cg2open, nullclose, cg2mmap, nokqfilter, cg2gattr, 121 cg2gvideo, cg2svideo, 122 cg2getcmap, cg2putcmap }; 123 124 static int cg2intr __P((void*)); 125 126 /* 127 * Match a cg2. 128 */ 129 static int 130 cg2match(parent, cf, aux) 131 struct device *parent; 132 struct cfdata *cf; 133 void *aux; 134 { 135 struct confargs *ca = aux; 136 int probe_addr; 137 138 /* No default VME address. */ 139 if (ca->ca_paddr == -1) 140 return (0); 141 142 /* Make sure something is there... */ 143 probe_addr = ca->ca_paddr + CTLREGS_OFF; 144 if (bus_peek(ca->ca_bustype, probe_addr, 1) == -1) 145 return (0); 146 147 /* XXX: look at the ID reg? */ 148 /* printf("cg2: id=0x%x\n", x); */ 149 150 /* Default interrupt priority. */ 151 if (ca->ca_intpri == -1) 152 ca->ca_intpri = 4; 153 154 return (1); 155 } 156 157 /* 158 * Attach a display. We need to notice if it is the console, too. 159 */ 160 static void 161 cg2attach(parent, self, args) 162 struct device *parent, *self; 163 void *args; 164 { 165 struct cg2_softc *sc = (struct cg2_softc *)self; 166 struct fbdevice *fb = &sc->sc_fb; 167 struct confargs *ca = args; 168 struct fbtype *fbt; 169 170 sc->sc_phys = ca->ca_paddr; 171 sc->sc_pmtype = PMAP_NC | PMAP_VME16; 172 173 sc->sc_ctlreg = (struct cg2fb *) bus_mapin(ca->ca_bustype, 174 ca->ca_paddr + CTLREGS_OFF, CTLREGS_SIZE); 175 176 isr_add_vectored(cg2intr, (void*)sc, 177 ca->ca_intpri, ca->ca_intvec); 178 179 /* 180 * XXX - Initialize? Determine type? 181 */ 182 sc->sc_ctlreg->intrptvec.reg = ca->ca_intvec; 183 sc->sc_ctlreg->status.word = 1; 184 185 fb->fb_driver = &cg2fbdriver; 186 fb->fb_private = sc; 187 fb->fb_name = sc->sc_dev.dv_xname; 188 189 fbt = &fb->fb_fbtype; 190 fbt->fb_type = FBTYPE_SUN2COLOR; 191 fbt->fb_depth = 8; 192 fbt->fb_cmsize = CMSIZE; 193 194 fbt->fb_width = 1152; 195 fbt->fb_height = 900; 196 fbt->fb_size = CG2_MAPPED_SIZE; 197 198 printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height); 199 fb_attach(fb, 2); 200 } 201 202 int 203 cg2open(dev, flags, mode, p) 204 dev_t dev; 205 int flags, mode; 206 struct proc *p; 207 { 208 int unit = minor(dev); 209 210 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 211 return (ENXIO); 212 return (0); 213 } 214 215 int 216 cg2ioctl(dev, cmd, data, flags, p) 217 dev_t dev; 218 u_long cmd; 219 caddr_t data; 220 int flags; 221 struct proc *p; 222 { 223 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 224 225 return (fbioctlfb(&sc->sc_fb, cmd, data)); 226 } 227 228 /* 229 * Return the address that would map the given device at the given 230 * offset, allowing for the given protection, or return -1 for error. 231 */ 232 paddr_t 233 cg2mmap(dev, off, prot) 234 dev_t dev; 235 off_t off; 236 int prot; 237 { 238 struct cg2_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 239 240 if (off & PGOFSET) 241 panic("cg2mmap"); 242 243 if (off >= CG2_MAPPED_SIZE) 244 return (-1); 245 246 /* 247 * I turned on PMAP_NC here to disable the cache as I was 248 * getting horribly broken behaviour with it on. 249 */ 250 return ((sc->sc_phys + off) | sc->sc_pmtype); 251 } 252 253 /* 254 * Internal ioctl functions. 255 */ 256 257 /* FBIOGATTR: */ 258 static int cg2gattr(fb, data) 259 struct fbdevice *fb; 260 void *data; 261 { 262 struct fbgattr *fba = data; 263 264 fba->real_type = fb->fb_fbtype.fb_type; 265 fba->owner = 0; /* XXX - TIOCCONS stuff? */ 266 fba->fbtype = fb->fb_fbtype; 267 fba->sattr.flags = 0; 268 fba->sattr.emu_type = fb->fb_fbtype.fb_type; 269 fba->sattr.dev_specific[0] = -1; 270 fba->emu_types[0] = fb->fb_fbtype.fb_type; 271 fba->emu_types[1] = -1; 272 return (0); 273 } 274 275 /* FBIOGVIDEO: */ 276 static int cg2gvideo(fb, data) 277 struct fbdevice *fb; 278 void *data; 279 { 280 int *on = data; 281 struct cg2_softc *sc = fb->fb_private; 282 283 *on = sc->sc_ctlreg->status.reg.video_enab; 284 return (0); 285 } 286 287 /* FBIOSVIDEO: */ 288 static int cg2svideo(fb, data) 289 struct fbdevice *fb; 290 void *data; 291 { 292 int *on = data; 293 struct cg2_softc *sc = fb->fb_private; 294 295 sc->sc_ctlreg->status.reg.video_enab = (*on) & 1; 296 297 return (0); 298 } 299 300 /* FBIOGETCMAP: */ 301 static int cg2getcmap(fb, data) 302 struct fbdevice *fb; 303 void *data; 304 { 305 struct fbcmap *cmap = data; 306 struct cg2_softc *sc = fb->fb_private; 307 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 308 int error, start, count, ecount; 309 u_int i; 310 u_short *p; 311 312 start = cmap->index; 313 count = cmap->count; 314 ecount = start + count; 315 if (start >= CMSIZE || count > CMSIZE - start) 316 return (EINVAL); 317 318 /* XXX - Wait for retrace? */ 319 320 /* Copy hardware to local arrays. */ 321 p = &sc->sc_ctlreg->redmap[start]; 322 for (i = start; i < ecount; i++) 323 red[i] = *p++; 324 p = &sc->sc_ctlreg->greenmap[start]; 325 for (i = start; i < ecount; i++) 326 green[i] = *p++; 327 p = &sc->sc_ctlreg->bluemap[start]; 328 for (i = start; i < ecount; i++) 329 blue[i] = *p++; 330 331 /* Copy local arrays to user space. */ 332 if ((error = copyout(red + start, cmap->red, count)) != 0) 333 return (error); 334 if ((error = copyout(green + start, cmap->green, count)) != 0) 335 return (error); 336 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 337 return (error); 338 339 return (0); 340 } 341 342 /* FBIOPUTCMAP: */ 343 static int cg2putcmap(fb, data) 344 struct fbdevice *fb; 345 void *data; 346 { 347 struct fbcmap *cmap = data; 348 struct cg2_softc *sc = fb->fb_private; 349 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 350 int error; 351 u_int start, count, ecount; 352 u_int i; 353 u_short *p; 354 355 start = cmap->index; 356 count = cmap->count; 357 ecount = start + count; 358 if (start >= CMSIZE || count > CMSIZE - start) 359 return (EINVAL); 360 361 /* Copy from user space to local arrays. */ 362 if ((error = copyin(cmap->red, red + start, count)) != 0) 363 return (error); 364 if ((error = copyin(cmap->green, green + start, count)) != 0) 365 return (error); 366 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 367 return (error); 368 369 /* XXX - Wait for retrace? */ 370 371 /* Copy from local arrays to hardware. */ 372 p = &sc->sc_ctlreg->redmap[start]; 373 for (i = start; i < ecount; i++) 374 *p++ = red[i]; 375 p = &sc->sc_ctlreg->greenmap[start]; 376 for (i = start; i < ecount; i++) 377 *p++ = green[i]; 378 p = &sc->sc_ctlreg->bluemap[start]; 379 for (i = start; i < ecount; i++) 380 *p++ = blue[i]; 381 382 return (0); 383 384 } 385 386 static int 387 cg2intr(vsc) 388 void *vsc; 389 { 390 struct cg2_softc *sc = vsc; 391 392 /* XXX - Just disable interrupts for now. */ 393 sc->sc_ctlreg->status.reg.inten = 0; 394 395 printf("cg2intr\n"); 396 return (1); 397 } 398
Indexes created Mon Sep 22 13:09:51 GMT 2025