cg2.c revision 1.15.2.2
1 /* $NetBSD: cg2.c,v 1.15.2.2 2001/10/10 11:56:37 fvdl 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 #include <sys/vnode.h> 65 66 #include <uvm/uvm_extern.h> 67 68 #include <dev/sun/fbio.h> 69 #include <machine/autoconf.h> 70 #include <machine/pmap.h> 71 #include <machine/cg2reg.h> 72 73 #include "fbvar.h" 74 75 cdev_decl(cg2); 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 struct cfattach cgtwo_ca = { 104 sizeof(struct cg2_softc), cg2match, cg2attach 105 }; 106 107 extern struct cfdriver cgtwo_cd; 108 109 static int cg2gattr __P((struct fbdevice *, void *)); 110 static int cg2gvideo __P((struct fbdevice *, void *)); 111 static int cg2svideo __P((struct fbdevice *, void *)); 112 static int cg2getcmap __P((struct fbdevice *, void *)); 113 static int cg2putcmap __P((struct fbdevice *, void *)); 114 115 static struct fbdriver cg2fbdriver = { 116 cg2open, cg2close, cg2mmap, cg2gattr, 117 cg2gvideo, cg2svideo, 118 cg2getcmap, cg2putcmap }; 119 120 static int cg2intr __P((void*)); 121 122 /* 123 * Match a cg2. 124 */ 125 static int 126 cg2match(parent, cf, aux) 127 struct device *parent; 128 struct cfdata *cf; 129 void *aux; 130 { 131 struct confargs *ca = aux; 132 int probe_addr; 133 134 /* No default VME address. */ 135 if (ca->ca_paddr == -1) 136 return (0); 137 138 /* Make sure something is there... */ 139 probe_addr = ca->ca_paddr + CTLREGS_OFF; 140 if (bus_peek(ca->ca_bustype, probe_addr, 1) == -1) 141 return (0); 142 143 /* XXX: look at the ID reg? */ 144 /* printf("cg2: id=0x%x\n", x); */ 145 146 /* Default interrupt priority. */ 147 if (ca->ca_intpri == -1) 148 ca->ca_intpri = 4; 149 150 return (1); 151 } 152 153 /* 154 * Attach a display. We need to notice if it is the console, too. 155 */ 156 static void 157 cg2attach(parent, self, args) 158 struct device *parent, *self; 159 void *args; 160 { 161 struct cg2_softc *sc = (struct cg2_softc *)self; 162 struct fbdevice *fb = &sc->sc_fb; 163 struct confargs *ca = args; 164 struct fbtype *fbt; 165 166 sc->sc_phys = ca->ca_paddr; 167 sc->sc_pmtype = PMAP_NC | PMAP_VME16; 168 169 sc->sc_ctlreg = (struct cg2fb *) bus_mapin(ca->ca_bustype, 170 ca->ca_paddr + CTLREGS_OFF, CTLREGS_SIZE); 171 172 isr_add_vectored(cg2intr, (void*)sc, 173 ca->ca_intpri, ca->ca_intvec); 174 175 /* 176 * XXX - Initialize? Determine type? 177 */ 178 sc->sc_ctlreg->intrptvec.reg = ca->ca_intvec; 179 sc->sc_ctlreg->status.word = 1; 180 181 fb->fb_driver = &cg2fbdriver; 182 fb->fb_private = sc; 183 fb->fb_name = sc->sc_dev.dv_xname; 184 185 fbt = &fb->fb_fbtype; 186 fbt->fb_type = FBTYPE_SUN2COLOR; 187 fbt->fb_depth = 8; 188 fbt->fb_cmsize = CMSIZE; 189 190 fbt->fb_width = 1152; 191 fbt->fb_height = 900; 192 fbt->fb_size = CG2_MAPPED_SIZE; 193 194 printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height); 195 fb_attach(fb, 2); 196 } 197 198 int 199 cg2open(devvp, flags, mode, p) 200 struct vnode *devvp; 201 int flags, mode; 202 struct proc *p; 203 { 204 dev_t dev = vdev_rdev(devvp); 205 int unit = minor(dev); 206 207 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 208 return (ENXIO); 209 vdev_setprivdata(devvp, cgtwo_cd.cd_devs[unit]); 210 return (0); 211 } 212 213 int 214 cg2close(devvp, flags, mode, p) 215 struct vnode *devvp; 216 int flags, mode; 217 struct proc *p; 218 { 219 220 return (0); 221 } 222 223 int 224 cg2ioctl(devvp, cmd, data, flags, p) 225 struct vnode *devvp; 226 u_long cmd; 227 caddr_t data; 228 int flags; 229 struct proc *p; 230 { 231 struct cg2_softc *sc = vdev_privdata(devvp); 232 233 return (fbioctlfb(&sc->sc_fb, cmd, data)); 234 } 235 236 /* 237 * Return the address that would map the given device at the given 238 * offset, allowing for the given protection, or return -1 for error. 239 */ 240 paddr_t 241 cg2mmap(devvp, off, prot) 242 struct vnode *devvp; 243 off_t off; 244 int prot; 245 { 246 struct cg2_softc *sc = vdev_privdata(devvp); 247 248 if (off & PGOFSET) 249 panic("cg2mmap"); 250 251 if (off >= CG2_MAPPED_SIZE) 252 return (-1); 253 254 /* 255 * I turned on PMAP_NC here to disable the cache as I was 256 * getting horribly broken behaviour with it on. 257 */ 258 return ((sc->sc_phys + off) | sc->sc_pmtype); 259 } 260 261 /* 262 * Internal ioctl functions. 263 */ 264 265 /* FBIOGATTR: */ 266 static int cg2gattr(fb, data) 267 struct fbdevice *fb; 268 void *data; 269 { 270 struct fbgattr *fba = data; 271 272 fba->real_type = fb->fb_fbtype.fb_type; 273 fba->owner = 0; /* XXX - TIOCCONS stuff? */ 274 fba->fbtype = fb->fb_fbtype; 275 fba->sattr.flags = 0; 276 fba->sattr.emu_type = fb->fb_fbtype.fb_type; 277 fba->sattr.dev_specific[0] = -1; 278 fba->emu_types[0] = fb->fb_fbtype.fb_type; 279 fba->emu_types[1] = -1; 280 return (0); 281 } 282 283 /* FBIOGVIDEO: */ 284 static int cg2gvideo(fb, data) 285 struct fbdevice *fb; 286 void *data; 287 { 288 int *on = data; 289 struct cg2_softc *sc = fb->fb_private; 290 291 *on = sc->sc_ctlreg->status.reg.video_enab; 292 return (0); 293 } 294 295 /* FBIOSVIDEO: */ 296 static int cg2svideo(fb, data) 297 struct fbdevice *fb; 298 void *data; 299 { 300 int *on = data; 301 struct cg2_softc *sc = fb->fb_private; 302 303 sc->sc_ctlreg->status.reg.video_enab = (*on) & 1; 304 305 return (0); 306 } 307 308 /* FBIOGETCMAP: */ 309 static int cg2getcmap(fb, data) 310 struct fbdevice *fb; 311 void *data; 312 { 313 struct fbcmap *cmap = data; 314 struct cg2_softc *sc = fb->fb_private; 315 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 316 int error, start, count, ecount; 317 u_int i; 318 u_short *p; 319 320 start = cmap->index; 321 count = cmap->count; 322 ecount = start + count; 323 if (start >= CMSIZE || ecount > CMSIZE) 324 return (EINVAL); 325 326 /* XXX - Wait for retrace? */ 327 328 /* Copy hardware to local arrays. */ 329 p = &sc->sc_ctlreg->redmap[start]; 330 for (i = start; i < ecount; i++) 331 red[i] = *p++; 332 p = &sc->sc_ctlreg->greenmap[start]; 333 for (i = start; i < ecount; i++) 334 green[i] = *p++; 335 p = &sc->sc_ctlreg->bluemap[start]; 336 for (i = start; i < ecount; i++) 337 blue[i] = *p++; 338 339 /* Copy local arrays to user space. */ 340 if ((error = copyout(red + start, cmap->red, count)) != 0) 341 return (error); 342 if ((error = copyout(green + start, cmap->green, count)) != 0) 343 return (error); 344 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 345 return (error); 346 347 return (0); 348 } 349 350 /* FBIOPUTCMAP: */ 351 static int cg2putcmap(fb, data) 352 struct fbdevice *fb; 353 void *data; 354 { 355 struct fbcmap *cmap = data; 356 struct cg2_softc *sc = fb->fb_private; 357 u_char red[CMSIZE], green[CMSIZE], blue[CMSIZE]; 358 int error; 359 u_int start, count, ecount; 360 u_int i; 361 u_short *p; 362 363 start = cmap->index; 364 count = cmap->count; 365 ecount = start + count; 366 if (start >= CMSIZE || ecount > CMSIZE) 367 return (EINVAL); 368 369 /* Copy from user space to local arrays. */ 370 if ((error = copyin(cmap->red, red + start, count)) != 0) 371 return (error); 372 if ((error = copyin(cmap->green, green + start, count)) != 0) 373 return (error); 374 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 375 return (error); 376 377 /* XXX - Wait for retrace? */ 378 379 /* Copy from local arrays to hardware. */ 380 p = &sc->sc_ctlreg->redmap[start]; 381 for (i = start; i < ecount; i++) 382 *p++ = red[i]; 383 p = &sc->sc_ctlreg->greenmap[start]; 384 for (i = start; i < ecount; i++) 385 *p++ = green[i]; 386 p = &sc->sc_ctlreg->bluemap[start]; 387 for (i = start; i < ecount; i++) 388 *p++ = blue[i]; 389 390 return (0); 391 392 } 393 394 static int 395 cg2intr(vsc) 396 void *vsc; 397 { 398 struct cg2_softc *sc = vsc; 399 400 /* XXX - Just disable interrupts for now. */ 401 sc->sc_ctlreg->status.reg.inten = 0; 402 403 printf("cg2intr\n"); 404 return (1); 405 } 406
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