cgtwo.c revision 1.26
1 /* $NetBSD: cgtwo.c,v 1.26 1998/02/04 01:04:48 pk 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 0, 0)) { 141 return (1); 142 } 143 144 return (0); 145 } 146 147 /* 148 * Attach a display. We need to notice if it is the console, too. 149 */ 150 void 151 cgtwoattach(parent, self, aux) 152 struct device *parent, *self; 153 void *aux; 154 { 155 struct vme_attach_args *va = aux; 156 vme_chipset_tag_t ct = va->vma_chipset_tag; 157 bus_space_tag_t bt = va->vma_bustag; 158 bus_space_handle_t bh; 159 vme_mod_t mod; 160 register struct cgtwo_softc *sc = (struct cgtwo_softc *)self; 161 register int node = 0; 162 int isconsole = 0; 163 char *nam = NULL; 164 165 sc->sc_ct = ct; 166 sc->sc_bt = bt; 167 sc->sc_fb.fb_driver = &cgtwofbdriver; 168 sc->sc_fb.fb_device = &sc->sc_dev; 169 sc->sc_fb.fb_type.fb_type = FBTYPE_SUN2COLOR; 170 sc->sc_fb.fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 171 172 sc->sc_fb.fb_type.fb_depth = 8; 173 fb_setsize(&sc->sc_fb, sc->sc_fb.fb_type.fb_depth, 174 1152, 900, node, BUS_VME16 /* XXX*/); 175 176 sc->sc_fb.fb_type.fb_cmsize = 256; 177 sc->sc_fb.fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG); 178 printf(": %s, %d x %d", nam, 179 sc->sc_fb.fb_type.fb_width, sc->sc_fb.fb_type.fb_height); 180 181 /* 182 * When the ROM has mapped in a cgtwo display, the address 183 * maps only the video RAM, so in any case we have to map the 184 * registers ourselves. We only need the video RAM if we are 185 * going to print characters via rconsole. 186 */ 187 #if defined(SUN4) 188 if (CPU_ISSUN4) { 189 struct eeprom *eep = (struct eeprom *)eeprom_va; 190 /* 191 * Assume this is the console if there's no eeprom info 192 * to be found. 193 */ 194 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 195 isconsole = (fbconstty != NULL); 196 else 197 isconsole = 0; 198 } 199 #endif 200 201 sc->sc_paddr = va->vma_reg[0]; 202 mod = VMEMOD_A24 | VMEMOD_S | VMEMOD_D; 203 204 if (isconsole) { 205 if (vme_bus_map(ct, sc->sc_paddr + CG2_PIXMAP_OFF, 206 CG2_PIXMAP_SIZE, mod, bt, &bh) != 0) 207 panic("cgtwo: vme_map pixels"); 208 209 sc->sc_fb.fb_pixels = (caddr_t)bh; 210 } 211 212 if (vme_bus_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 213 offsetof(struct cg2fb, status.reg), 214 sizeof(struct cg2statusreg), mod, bt, &bh) != 0) 215 panic("cgtwo: vme_map status"); 216 sc->sc_reg = (volatile struct cg2statusreg *)bh; 217 218 if (vme_bus_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 219 offsetof(struct cg2fb, redmap[0]), 220 3 * CG2_CMSIZE, mod, bt, &bh) != 0) 221 panic("cgtwo: vme_map cmap"); 222 sc->sc_cmap = (volatile u_short *)bh; 223 224 if (isconsole) { 225 printf(" (console)\n"); 226 #ifdef RASTERCONSOLE 227 fbrcons_init(&sc->sc_fb); 228 #endif 229 } else 230 printf("\n"); 231 232 if (node == fbnode || CPU_ISSUN4) 233 fb_attach(&sc->sc_fb, isconsole); 234 } 235 236 int 237 cgtwoopen(dev, flags, mode, p) 238 dev_t dev; 239 int flags, mode; 240 struct proc *p; 241 { 242 int unit = minor(dev); 243 244 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 245 return (ENXIO); 246 return (0); 247 } 248 249 int 250 cgtwoclose(dev, flags, mode, p) 251 dev_t dev; 252 int flags, mode; 253 struct proc *p; 254 { 255 256 return (0); 257 } 258 259 int 260 cgtwoioctl(dev, cmd, data, flags, p) 261 dev_t dev; 262 u_long cmd; 263 register caddr_t data; 264 int flags; 265 struct proc *p; 266 { 267 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 268 register struct fbgattr *fba; 269 270 switch (cmd) { 271 272 case FBIOGTYPE: 273 *(struct fbtype *)data = sc->sc_fb.fb_type; 274 break; 275 276 case FBIOGATTR: 277 fba = (struct fbgattr *)data; 278 fba->real_type = sc->sc_fb.fb_type.fb_type; 279 fba->owner = 0; /* XXX ??? */ 280 fba->fbtype = sc->sc_fb.fb_type; 281 fba->sattr.flags = 0; 282 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 283 fba->sattr.dev_specific[0] = -1; 284 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 285 fba->emu_types[1] = -1; 286 break; 287 288 case FBIOGETCMAP: 289 return cgtwogetcmap(sc, (struct fbcmap *) data); 290 291 case FBIOPUTCMAP: 292 return cgtwoputcmap(sc, (struct fbcmap *) data); 293 294 case FBIOGVIDEO: 295 *(int *)data = sc->sc_reg->video_enab; 296 break; 297 298 case FBIOSVIDEO: 299 sc->sc_reg->video_enab = (*(int*)data) & 1; 300 break; 301 302 default: 303 return (ENOTTY); 304 } 305 return (0); 306 } 307 308 int 309 cgtwopoll(dev, events, p) 310 dev_t dev; 311 int events; 312 struct proc *p; 313 { 314 315 return (seltrue(dev, events, p)); 316 } 317 318 /* 319 * Undo the effect of an FBIOSVIDEO that turns the video off. 320 */ 321 static void 322 cgtwounblank(dev) 323 struct device *dev; 324 { 325 struct cgtwo_softc *sc = (struct cgtwo_softc *)dev; 326 sc->sc_reg->video_enab = 1; 327 } 328 329 /* 330 */ 331 int 332 cgtwogetcmap(sc, cmap) 333 register struct cgtwo_softc *sc; 334 register struct fbcmap *cmap; 335 { 336 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 337 int error, start, count, ecount; 338 register u_int i; 339 register volatile u_short *p; 340 341 start = cmap->index; 342 count = cmap->count; 343 ecount = start + count; 344 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 345 return (EINVAL); 346 347 /* XXX - Wait for retrace? */ 348 349 /* Copy hardware to local arrays. */ 350 p = &sc_redmap(sc)[start]; 351 for (i = start; i < ecount; i++) 352 red[i] = *p++; 353 p = &sc_greenmap(sc)[start]; 354 for (i = start; i < ecount; i++) 355 green[i] = *p++; 356 p = &sc_bluemap(sc)[start]; 357 for (i = start; i < ecount; i++) 358 blue[i] = *p++; 359 360 /* Copy local arrays to user space. */ 361 if ((error = copyout(red + start, cmap->red, count)) != 0) 362 return (error); 363 if ((error = copyout(green + start, cmap->green, count)) != 0) 364 return (error); 365 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 366 return (error); 367 368 return (0); 369 } 370 371 /* 372 */ 373 int 374 cgtwoputcmap(sc, cmap) 375 register struct cgtwo_softc *sc; 376 register struct fbcmap *cmap; 377 { 378 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 379 int error, start, count, ecount; 380 register u_int i; 381 register volatile u_short *p; 382 383 start = cmap->index; 384 count = cmap->count; 385 ecount = start + count; 386 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 387 return (EINVAL); 388 389 /* Copy from user space to local arrays. */ 390 if ((error = copyin(cmap->red, red + start, count)) != 0) 391 return (error); 392 if ((error = copyin(cmap->green, green + start, count)) != 0) 393 return (error); 394 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 395 return (error); 396 397 /* XXX - Wait for retrace? */ 398 399 /* Copy from local arrays to hardware. */ 400 p = &sc_redmap(sc)[start]; 401 for (i = start; i < ecount; i++) 402 *p++ = red[i]; 403 p = &sc_greenmap(sc)[start]; 404 for (i = start; i < ecount; i++) 405 *p++ = green[i]; 406 p = &sc_bluemap(sc)[start]; 407 for (i = start; i < ecount; i++) 408 *p++ = blue[i]; 409 410 return (0); 411 } 412 413 /* 414 * Return the address that would map the given device at the given 415 * offset, allowing for the given protection, or return -1 for error. 416 */ 417 int 418 cgtwommap(dev, off, prot) 419 dev_t dev; 420 int off, prot; 421 { 422 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 423 vme_mod_t mod; 424 int handle; 425 426 if (off & PGOFSET) 427 panic("cgtwommap"); 428 429 if ((unsigned)off >= sc->sc_fb.fb_type.fb_size) 430 return (-1); 431 432 /* Apparently, the pixels are in 32-bit data space */ 433 mod = VMEMOD_A24 | VMEMOD_S | VMEMOD_D | VMEMOD_D32; 434 435 if (vme_bus_mmap_cookie(sc->sc_ct, sc->sc_paddr + off, 436 mod, sc->sc_bt, &handle) != 0) 437 panic("cgtwommap"); 438 439 return (handle); 440 } 441
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