cgtwo.c revision 1.34.4.3
1 /* $NetBSD: cgtwo.c,v 1.34.4.3 2002/06/28 08:04:23 jdolecek 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 <machine/autoconf.h> 66 67 #include <dev/sun/fbio.h> 68 #include <dev/sun/fbvar.h> 69 70 #include <dev/vme/vmevar.h> 71 72 #include <machine/eeprom.h> 73 #include <machine/conf.h> 74 #include <machine/cgtworeg.h> 75 76 77 /* per-display variables */ 78 struct cgtwo_softc { 79 struct device sc_dev; /* base device */ 80 struct fbdevice sc_fb; /* frame buffer device */ 81 vme_addr_t sc_paddr; 82 vme_chipset_tag_t sc_ct; 83 bus_space_tag_t sc_bt; 84 volatile struct cg2statusreg *sc_reg; /* CG2 control registers */ 85 volatile u_short *sc_cmap; 86 #define sc_redmap(sc) ((sc)->sc_cmap) 87 #define sc_greenmap(sc) ((sc)->sc_cmap + CG2_CMSIZE) 88 #define sc_bluemap(sc) ((sc)->sc_cmap + 2 * CG2_CMSIZE) 89 }; 90 91 /* autoconfiguration driver */ 92 static void cgtwoattach __P((struct device *, struct device *, void *)); 93 static int cgtwomatch __P((struct device *, struct cfdata *, void *)); 94 static void cgtwounblank __P((struct device *)); 95 int cgtwogetcmap __P((struct cgtwo_softc *, struct fbcmap *)); 96 int cgtwoputcmap __P((struct cgtwo_softc *, struct fbcmap *)); 97 98 /* cdevsw prototypes */ 99 cdev_decl(cgtwo); 100 101 struct cfattach cgtwo_ca = { 102 sizeof(struct cgtwo_softc), cgtwomatch, cgtwoattach 103 }; 104 105 extern struct cfdriver cgtwo_cd; 106 107 /* frame buffer generic driver */ 108 static struct fbdriver cgtwofbdriver = { 109 cgtwounblank, cgtwoopen, cgtwoclose, cgtwoioctl, cgtwopoll, cgtwommap, 110 cgtwokqfilter 111 }; 112 113 /* 114 * Match a cgtwo. 115 */ 116 int 117 cgtwomatch(parent, cf, aux) 118 struct device *parent; 119 struct cfdata *cf; 120 void *aux; 121 { 122 struct vme_attach_args *va = aux; 123 vme_chipset_tag_t ct = va->va_vct; 124 vme_am_t mod; 125 126 /* 127 * Mask out invalid flags from the user. 128 */ 129 cf->cf_flags &= FB_USERMASK; 130 131 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 132 if (vme_probe(ct, va->r[0].offset + CG2_CTLREG_OFF, 2, mod, VME_D16, 133 0, 0)) { 134 return (0); 135 } 136 137 return (1); 138 } 139 140 /* 141 * Attach a display. We need to notice if it is the console, too. 142 */ 143 void 144 cgtwoattach(parent, self, aux) 145 struct device *parent, *self; 146 void *aux; 147 { 148 struct vme_attach_args *va = aux; 149 vme_chipset_tag_t ct = va->va_vct; 150 bus_space_tag_t bt; 151 bus_space_handle_t bh; 152 vme_am_t mod; 153 vme_mapresc_t resc; 154 struct cgtwo_softc *sc = (struct cgtwo_softc *)self; 155 struct fbdevice *fb = &sc->sc_fb; 156 struct eeprom *eep = (struct eeprom *)eeprom_va; 157 int isconsole = 0; 158 char *nam = NULL; 159 160 sc->sc_ct = ct; 161 fb->fb_driver = &cgtwofbdriver; 162 fb->fb_device = &sc->sc_dev; 163 fb->fb_type.fb_type = FBTYPE_SUN2COLOR; 164 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 165 166 fb->fb_type.fb_depth = 8; 167 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 168 169 fb->fb_type.fb_cmsize = 256; 170 fb->fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG); 171 printf(": %s, %d x %d", nam, 172 fb->fb_type.fb_width, fb->fb_type.fb_height); 173 174 /* 175 * When the ROM has mapped in a cgtwo display, the address 176 * maps only the video RAM, so in any case we have to map the 177 * registers ourselves. We only need the video RAM if we are 178 * going to print characters via rconsole. 179 */ 180 sc->sc_paddr = va->r[0].offset; 181 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 182 183 if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 184 offsetof(struct cg2fb, status.reg), 185 sizeof(struct cg2statusreg), mod, VME_D16, 0, 186 &bt, &bh, &resc) != 0) 187 panic("cgtwo: vme_map status"); 188 sc->sc_bt = bt; 189 sc->sc_reg = (volatile struct cg2statusreg *)bh; /* XXX */ 190 191 if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 192 offsetof(struct cg2fb, redmap[0]), 193 3 * CG2_CMSIZE, mod, VME_D16, 0, 194 &bt, &bh, &resc) != 0) 195 panic("cgtwo: vme_map cmap"); 196 sc->sc_cmap = (volatile u_short *)bh; /* XXX */ 197 198 /* 199 * Assume this is the console if there's no eeprom info 200 * to be found. 201 */ 202 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 203 isconsole = fb_is_console(0); 204 else 205 isconsole = 0; 206 207 if (isconsole) { 208 if (vme_space_map(ct, sc->sc_paddr + CG2_PIXMAP_OFF, 209 CG2_PIXMAP_SIZE, mod, VME_D16, 0, 210 &bt, &bh, &resc) != 0) 211 panic("cgtwo: vme_map pixels"); 212 213 fb->fb_pixels = (caddr_t)bh; /* XXX */ 214 printf(" (console)\n"); 215 #ifdef RASTERCONSOLE 216 fbrcons_init(fb); 217 #endif 218 } else 219 printf("\n"); 220 221 fb_attach(fb, isconsole); 222 } 223 224 int 225 cgtwoopen(dev, flags, mode, p) 226 dev_t dev; 227 int flags, mode; 228 struct proc *p; 229 { 230 int unit = minor(dev); 231 232 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 233 return (ENXIO); 234 return (0); 235 } 236 237 int 238 cgtwoclose(dev, flags, mode, p) 239 dev_t dev; 240 int flags, mode; 241 struct proc *p; 242 { 243 244 return (0); 245 } 246 247 int 248 cgtwoioctl(dev, cmd, data, flags, p) 249 dev_t dev; 250 u_long cmd; 251 register caddr_t data; 252 int flags; 253 struct proc *p; 254 { 255 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 256 register struct fbgattr *fba; 257 258 switch (cmd) { 259 260 case FBIOGTYPE: 261 *(struct fbtype *)data = sc->sc_fb.fb_type; 262 break; 263 264 case FBIOGATTR: 265 fba = (struct fbgattr *)data; 266 fba->real_type = sc->sc_fb.fb_type.fb_type; 267 fba->owner = 0; /* XXX ??? */ 268 fba->fbtype = sc->sc_fb.fb_type; 269 fba->sattr.flags = 0; 270 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 271 fba->sattr.dev_specific[0] = -1; 272 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 273 fba->emu_types[1] = -1; 274 break; 275 276 case FBIOGETCMAP: 277 return cgtwogetcmap(sc, (struct fbcmap *) data); 278 279 case FBIOPUTCMAP: 280 return cgtwoputcmap(sc, (struct fbcmap *) data); 281 282 case FBIOGVIDEO: 283 *(int *)data = sc->sc_reg->video_enab; 284 break; 285 286 case FBIOSVIDEO: 287 sc->sc_reg->video_enab = (*(int*)data) & 1; 288 break; 289 290 default: 291 return (ENOTTY); 292 } 293 return (0); 294 } 295 296 int 297 cgtwopoll(dev, events, p) 298 dev_t dev; 299 int events; 300 struct proc *p; 301 { 302 303 return (seltrue(dev, events, p)); 304 } 305 306 static void 307 filt_cgtwodetach(struct knote *kn) 308 { 309 /* Nothing to do */ 310 } 311 312 static const struct filterops cgtwo_filtops = 313 { 1, NULL, filt_cgtwodetach, filt_seltrue }; 314 315 int 316 cgtwokqfilter(dev_t dev, struct knote *kn) 317 { 318 switch (kn->kn_filter) { 319 case EVFILT_READ: 320 case EVFILT_WRITE: 321 kn->kn_fop = &cgtwo_filtops; 322 break; 323 default: 324 return (1); 325 } 326 327 /* Nothing more to do */ 328 return (0); 329 } 330 331 /* 332 * Undo the effect of an FBIOSVIDEO that turns the video off. 333 */ 334 static void 335 cgtwounblank(dev) 336 struct device *dev; 337 { 338 struct cgtwo_softc *sc = (struct cgtwo_softc *)dev; 339 sc->sc_reg->video_enab = 1; 340 } 341 342 /* 343 */ 344 int 345 cgtwogetcmap(sc, cmap) 346 register struct cgtwo_softc *sc; 347 register struct fbcmap *cmap; 348 { 349 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 350 int error, start, count, ecount; 351 register u_int i; 352 register volatile u_short *p; 353 354 start = cmap->index; 355 count = cmap->count; 356 ecount = start + count; 357 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 358 return (EINVAL); 359 360 /* XXX - Wait for retrace? */ 361 362 /* Copy hardware to local arrays. */ 363 p = &sc_redmap(sc)[start]; 364 for (i = start; i < ecount; i++) 365 red[i] = *p++; 366 p = &sc_greenmap(sc)[start]; 367 for (i = start; i < ecount; i++) 368 green[i] = *p++; 369 p = &sc_bluemap(sc)[start]; 370 for (i = start; i < ecount; i++) 371 blue[i] = *p++; 372 373 /* Copy local arrays to user space. */ 374 if ((error = copyout(red + start, cmap->red, count)) != 0) 375 return (error); 376 if ((error = copyout(green + start, cmap->green, count)) != 0) 377 return (error); 378 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 379 return (error); 380 381 return (0); 382 } 383 384 /* 385 */ 386 int 387 cgtwoputcmap(sc, cmap) 388 register struct cgtwo_softc *sc; 389 register struct fbcmap *cmap; 390 { 391 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 392 int error; 393 u_int start, count, ecount; 394 register u_int i; 395 register volatile u_short *p; 396 397 start = cmap->index; 398 count = cmap->count; 399 ecount = start + count; 400 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 401 return (EINVAL); 402 403 /* Copy from user space to local arrays. */ 404 if ((error = copyin(cmap->red, red + start, count)) != 0) 405 return (error); 406 if ((error = copyin(cmap->green, green + start, count)) != 0) 407 return (error); 408 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 409 return (error); 410 411 /* XXX - Wait for retrace? */ 412 413 /* Copy from local arrays to hardware. */ 414 p = &sc_redmap(sc)[start]; 415 for (i = start; i < ecount; i++) 416 *p++ = red[i]; 417 p = &sc_greenmap(sc)[start]; 418 for (i = start; i < ecount; i++) 419 *p++ = green[i]; 420 p = &sc_bluemap(sc)[start]; 421 for (i = start; i < ecount; i++) 422 *p++ = blue[i]; 423 424 return (0); 425 } 426 427 /* 428 * Return the address that would map the given device at the given 429 * offset, allowing for the given protection, or return -1 for error. 430 */ 431 paddr_t 432 cgtwommap(dev, off, prot) 433 dev_t dev; 434 off_t off; 435 int prot; 436 { 437 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 438 vme_am_t mod; 439 bus_space_handle_t bh; 440 extern int sparc_vme_mmap_cookie __P((vme_addr_t, vme_am_t, 441 bus_space_handle_t *)); 442 443 if (off & PGOFSET) 444 panic("cgtwommap"); 445 446 if (off >= sc->sc_fb.fb_type.fb_size) 447 return (-1); 448 449 /* Apparently, the pixels are in 32-bit data space */ 450 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 451 452 if (sparc_vme_mmap_cookie(sc->sc_paddr + off, mod, &bh) != 0) 453 panic("cgtwommap"); 454 455 return ((paddr_t)bh); 456 } 457
Indexes created Thu Oct 02 10:09:58 GMT 2025