cgtwo.c revision 1.25
1 /* $NetBSD: cgtwo.c,v 1.25 1998/01/28 02:27:16 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 (cgtwo) 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/buf.h> 58 #include <sys/device.h> 59 #include <sys/ioctl.h> 60 #include <sys/malloc.h> 61 #include <sys/mman.h> 62 #include <sys/tty.h> 63 #include <sys/conf.h> 64 65 #include <vm/vm.h> 66 67 #include <machine/fbio.h> 68 #include <machine/autoconf.h> 69 #include <machine/pmap.h> 70 #include <machine/fbvar.h> 71 72 #include <dev/vme/vmevar.h> 73 74 #if defined(SUN4) 75 #include <machine/eeprom.h> 76 #endif 77 #include <machine/conf.h> 78 #include <machine/cgtworeg.h> 79 80 81 /* per-display variables */ 82 struct cgtwo_softc { 83 struct device sc_dev; /* base device */ 84 struct fbdevice sc_fb; /* frame buffer device */ 85 vme_addr_t sc_paddr; 86 vme_chipset_tag_t sc_ct; 87 bus_space_tag_t sc_bt; 88 volatile struct cg2statusreg *sc_reg; /* CG2 control registers */ 89 volatile u_short *sc_cmap; 90 #define sc_redmap(sc) ((sc)->sc_cmap) 91 #define sc_greenmap(sc) ((sc)->sc_cmap + CG2_CMSIZE) 92 #define sc_bluemap(sc) ((sc)->sc_cmap + 2 * CG2_CMSIZE) 93 }; 94 95 /* autoconfiguration driver */ 96 static void cgtwoattach __P((struct device *, struct device *, void *)); 97 static int cgtwomatch __P((struct device *, struct cfdata *, void *)); 98 static void cgtwounblank __P((struct device *)); 99 int cgtwogetcmap __P((struct cgtwo_softc *, struct fbcmap *)); 100 int cgtwoputcmap __P((struct cgtwo_softc *, struct fbcmap *)); 101 102 /* cdevsw prototypes */ 103 cdev_decl(cgtwo); 104 105 struct cfattach cgtwo_ca = { 106 sizeof(struct cgtwo_softc), cgtwomatch, cgtwoattach 107 }; 108 109 extern struct cfdriver cgtwo_cd; 110 111 /* frame buffer generic driver */ 112 static struct fbdriver cgtwofbdriver = { 113 cgtwounblank, cgtwoopen, cgtwoclose, cgtwoioctl, cgtwopoll, cgtwommap 114 }; 115 116 extern int fbnode; 117 extern struct tty *fbconstty; 118 119 /* 120 * Match a cgtwo. 121 */ 122 int 123 cgtwomatch(parent, cf, aux) 124 struct device *parent; 125 struct cfdata *cf; 126 void *aux; 127 { 128 struct vme_attach_args *va = aux; 129 vme_chipset_tag_t ct = va->vma_chipset_tag; 130 bus_space_tag_t bt = va->vma_bustag; 131 vme_mod_t mod; 132 133 /* 134 * Mask out invalid flags from the user. 135 */ 136 cf->cf_flags &= FB_USERMASK; 137 138 mod = VMEMOD_A24 | VMEMOD_S | VMEMOD_D; 139 if (vme_bus_probe(ct, bt, va->vma_reg[0] + CG2_CTLREG_OFF, 2, mod)) { 140 return (1); 141 } 142 143 return (0); 144 } 145 146 /* 147 * Attach a display. We need to notice if it is the console, too. 148 */ 149 void 150 cgtwoattach(parent, self, aux) 151 struct device *parent, *self; 152 void *aux; 153 { 154 struct vme_attach_args *va = aux; 155 vme_chipset_tag_t ct = va->vma_chipset_tag; 156 bus_space_tag_t bt = va->vma_bustag; 157 bus_space_handle_t bh; 158 vme_mod_t mod; 159 register struct cgtwo_softc *sc = (struct cgtwo_softc *)self; 160 register int node = 0; 161 int isconsole = 0; 162 char *nam = NULL; 163 164 sc->sc_ct = ct; 165 sc->sc_bt = bt; 166 sc->sc_fb.fb_driver = &cgtwofbdriver; 167 sc->sc_fb.fb_device = &sc->sc_dev; 168 sc->sc_fb.fb_type.fb_type = FBTYPE_SUN2COLOR; 169 sc->sc_fb.fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 170 171 sc->sc_fb.fb_type.fb_depth = 8; 172 fb_setsize(&sc->sc_fb, sc->sc_fb.fb_type.fb_depth, 173 1152, 900, node, BUS_VME16 /* XXX*/); 174 175 sc->sc_fb.fb_type.fb_cmsize = 256; 176 sc->sc_fb.fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG); 177 printf(": %s, %d x %d", nam, 178 sc->sc_fb.fb_type.fb_width, sc->sc_fb.fb_type.fb_height); 179 180 /* 181 * When the ROM has mapped in a cgtwo display, the address 182 * maps only the video RAM, so in any case we have to map the 183 * registers ourselves. We only need the video RAM if we are 184 * going to print characters via rconsole. 185 */ 186 #if defined(SUN4) 187 if (CPU_ISSUN4) { 188 struct eeprom *eep = (struct eeprom *)eeprom_va; 189 /* 190 * Assume this is the console if there's no eeprom info 191 * to be found. 192 */ 193 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 194 isconsole = (fbconstty != NULL); 195 else 196 isconsole = 0; 197 } 198 #endif 199 200 sc->sc_paddr = va->vma_reg[0]; 201 mod = VMEMOD_A24 | VMEMOD_S | VMEMOD_D; 202 203 if (isconsole) { 204 if (vme_bus_map(ct, sc->sc_paddr + CG2_PIXMAP_OFF, 205 CG2_PIXMAP_SIZE, mod, bt, &bh) != 0) 206 panic("cgtwo: vme_map pixels"); 207 208 sc->sc_fb.fb_pixels = (caddr_t)bh; 209 } 210 211 if (vme_bus_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 212 offsetof(struct cg2fb, status.reg), 213 sizeof(struct cg2statusreg), mod, bt, &bh) != 0) 214 panic("cgtwo: vme_map status"); 215 sc->sc_reg = (volatile struct cg2statusreg *)bh; 216 217 if (vme_bus_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 218 offsetof(struct cg2fb, redmap[0]), 219 3 * CG2_CMSIZE, mod, bt, &bh) != 0) 220 panic("cgtwo: vme_map cmap"); 221 sc->sc_cmap = (volatile u_short *)bh; 222 223 if (isconsole) { 224 printf(" (console)\n"); 225 #ifdef RASTERCONSOLE 226 fbrcons_init(&sc->sc_fb); 227 #endif 228 } else 229 printf("\n"); 230 231 if (node == fbnode || CPU_ISSUN4) 232 fb_attach(&sc->sc_fb, isconsole); 233 } 234 235 int 236 cgtwoopen(dev, flags, mode, p) 237 dev_t dev; 238 int flags, mode; 239 struct proc *p; 240 { 241 int unit = minor(dev); 242 243 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 244 return (ENXIO); 245 return (0); 246 } 247 248 int 249 cgtwoclose(dev, flags, mode, p) 250 dev_t dev; 251 int flags, mode; 252 struct proc *p; 253 { 254 255 return (0); 256 } 257 258 int 259 cgtwoioctl(dev, cmd, data, flags, p) 260 dev_t dev; 261 u_long cmd; 262 register caddr_t data; 263 int flags; 264 struct proc *p; 265 { 266 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 267 register struct fbgattr *fba; 268 269 switch (cmd) { 270 271 case FBIOGTYPE: 272 *(struct fbtype *)data = sc->sc_fb.fb_type; 273 break; 274 275 case FBIOGATTR: 276 fba = (struct fbgattr *)data; 277 fba->real_type = sc->sc_fb.fb_type.fb_type; 278 fba->owner = 0; /* XXX ??? */ 279 fba->fbtype = sc->sc_fb.fb_type; 280 fba->sattr.flags = 0; 281 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 282 fba->sattr.dev_specific[0] = -1; 283 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 284 fba->emu_types[1] = -1; 285 break; 286 287 case FBIOGETCMAP: 288 return cgtwogetcmap(sc, (struct fbcmap *) data); 289 290 case FBIOPUTCMAP: 291 return cgtwoputcmap(sc, (struct fbcmap *) data); 292 293 case FBIOGVIDEO: 294 *(int *)data = sc->sc_reg->video_enab; 295 break; 296 297 case FBIOSVIDEO: 298 sc->sc_reg->video_enab = (*(int*)data) & 1; 299 break; 300 301 default: 302 return (ENOTTY); 303 } 304 return (0); 305 } 306 307 int 308 cgtwopoll(dev, events, p) 309 dev_t dev; 310 int events; 311 struct proc *p; 312 { 313 314 return (seltrue(dev, events, p)); 315 } 316 317 /* 318 * Undo the effect of an FBIOSVIDEO that turns the video off. 319 */ 320 static void 321 cgtwounblank(dev) 322 struct device *dev; 323 { 324 struct cgtwo_softc *sc = (struct cgtwo_softc *)dev; 325 sc->sc_reg->video_enab = 1; 326 } 327 328 /* 329 */ 330 int 331 cgtwogetcmap(sc, cmap) 332 register struct cgtwo_softc *sc; 333 register struct fbcmap *cmap; 334 { 335 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 336 int error, start, count, ecount; 337 register u_int i; 338 register volatile u_short *p; 339 340 start = cmap->index; 341 count = cmap->count; 342 ecount = start + count; 343 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 344 return (EINVAL); 345 346 /* XXX - Wait for retrace? */ 347 348 /* Copy hardware to local arrays. */ 349 p = &sc_redmap(sc)[start]; 350 for (i = start; i < ecount; i++) 351 red[i] = *p++; 352 p = &sc_greenmap(sc)[start]; 353 for (i = start; i < ecount; i++) 354 green[i] = *p++; 355 p = &sc_bluemap(sc)[start]; 356 for (i = start; i < ecount; i++) 357 blue[i] = *p++; 358 359 /* Copy local arrays to user space. */ 360 if ((error = copyout(red + start, cmap->red, count)) != 0) 361 return (error); 362 if ((error = copyout(green + start, cmap->green, count)) != 0) 363 return (error); 364 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 365 return (error); 366 367 return (0); 368 } 369 370 /* 371 */ 372 int 373 cgtwoputcmap(sc, cmap) 374 register struct cgtwo_softc *sc; 375 register struct fbcmap *cmap; 376 { 377 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 378 int error, start, count, ecount; 379 register u_int i; 380 register volatile u_short *p; 381 382 start = cmap->index; 383 count = cmap->count; 384 ecount = start + count; 385 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 386 return (EINVAL); 387 388 /* Copy from user space to local arrays. */ 389 if ((error = copyin(cmap->red, red + start, count)) != 0) 390 return (error); 391 if ((error = copyin(cmap->green, green + start, count)) != 0) 392 return (error); 393 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 394 return (error); 395 396 /* XXX - Wait for retrace? */ 397 398 /* Copy from local arrays to hardware. */ 399 p = &sc_redmap(sc)[start]; 400 for (i = start; i < ecount; i++) 401 *p++ = red[i]; 402 p = &sc_greenmap(sc)[start]; 403 for (i = start; i < ecount; i++) 404 *p++ = green[i]; 405 p = &sc_bluemap(sc)[start]; 406 for (i = start; i < ecount; i++) 407 *p++ = blue[i]; 408 409 return (0); 410 } 411 412 /* 413 * Return the address that would map the given device at the given 414 * offset, allowing for the given protection, or return -1 for error. 415 */ 416 int 417 cgtwommap(dev, off, prot) 418 dev_t dev; 419 int off, prot; 420 { 421 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 422 vme_mod_t mod; 423 int handle; 424 425 if (off & PGOFSET) 426 panic("cgtwommap"); 427 428 if ((unsigned)off >= sc->sc_fb.fb_type.fb_size) 429 return (-1); 430 431 /* Apparently, the pixels are in 32-bit data space */ 432 mod = VMEMOD_A24 | VMEMOD_S | VMEMOD_D | VMEMOD_D32; 433 434 if (vme_bus_mmap_cookie(sc->sc_ct, sc->sc_paddr + off, 435 mod, sc->sc_bt, &handle) != 0) 436 panic("cgtwommap"); 437 438 return (handle); 439 } 440
Indexes created Thu Oct 02 10:09:58 GMT 2025