1 /* $NetBSD: cgtwo.c,v 1.29 1998/04/07 20:18:19 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 #include <machine/eeprom.h> 75 #include <machine/conf.h> 76 #include <machine/cgtworeg.h> 77 78 79 /* per-display variables */ 80 struct cgtwo_softc { 81 struct device sc_dev; /* base device */ 82 struct fbdevice sc_fb; /* frame buffer device */ 83 vme_addr_t sc_paddr; 84 vme_chipset_tag_t sc_ct; 85 bus_space_tag_t sc_bt; 86 volatile struct cg2statusreg *sc_reg; /* CG2 control registers */ 87 volatile u_short *sc_cmap; 88 #define sc_redmap(sc) ((sc)->sc_cmap) 89 #define sc_greenmap(sc) ((sc)->sc_cmap + CG2_CMSIZE) 90 #define sc_bluemap(sc) ((sc)->sc_cmap + 2 * CG2_CMSIZE) 91 }; 92 93 /* autoconfiguration driver */ 94 static void cgtwoattach __P((struct device *, struct device *, void *)); 95 static int cgtwomatch __P((struct device *, struct cfdata *, void *)); 96 static void cgtwounblank __P((struct device *)); 97 int cgtwogetcmap __P((struct cgtwo_softc *, struct fbcmap *)); 98 int cgtwoputcmap __P((struct cgtwo_softc *, struct fbcmap *)); 99 100 /* cdevsw prototypes */ 101 cdev_decl(cgtwo); 102 103 struct cfattach cgtwo_ca = { 104 sizeof(struct cgtwo_softc), cgtwomatch, cgtwoattach 105 }; 106 107 extern struct cfdriver cgtwo_cd; 108 109 /* frame buffer generic driver */ 110 static struct fbdriver cgtwofbdriver = { 111 cgtwounblank, cgtwoopen, cgtwoclose, cgtwoioctl, cgtwopoll, cgtwommap 112 }; 113 114 extern int fbnode; 115 extern struct tty *fbconstty; 116 117 /* 118 * Match a cgtwo. 119 */ 120 int 121 cgtwomatch(parent, cf, aux) 122 struct device *parent; 123 struct cfdata *cf; 124 void *aux; 125 { 126 struct vme_attach_args *va = aux; 127 vme_chipset_tag_t ct = va->vma_chipset_tag; 128 bus_space_tag_t bt = va->vma_bustag; 129 vme_mod_t mod; 130 131 /* 132 * Mask out invalid flags from the user. 133 */ 134 cf->cf_flags &= FB_USERMASK; 135 136 mod = VMEMOD_A24 | VMEMOD_S | VMEMOD_D; 137 if (vme_bus_probe(ct, bt, va->vma_reg[0], CG2_CTLREG_OFF, 2, mod, 138 0, 0)) { 139 return (1); 140 } 141 142 return (0); 143 } 144 145 /* 146 * Attach a display. We need to notice if it is the console, too. 147 */ 148 void 149 cgtwoattach(parent, self, aux) 150 struct device *parent, *self; 151 void *aux; 152 { 153 struct vme_attach_args *va = aux; 154 vme_chipset_tag_t ct = va->vma_chipset_tag; 155 bus_space_tag_t bt = va->vma_bustag; 156 bus_space_handle_t bh; 157 vme_mod_t mod; 158 struct cgtwo_softc *sc = (struct cgtwo_softc *)self; 159 struct fbdevice *fb = &sc->sc_fb; 160 struct eeprom *eep = (struct eeprom *)eeprom_va; 161 int isconsole = 0; 162 char *nam = NULL; 163 164 sc->sc_ct = ct; 165 sc->sc_bt = bt; 166 fb->fb_driver = &cgtwofbdriver; 167 fb->fb_device = &sc->sc_dev; 168 fb->fb_type.fb_type = FBTYPE_SUN2COLOR; 169 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 170 171 fb->fb_type.fb_depth = 8; 172 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 173 174 fb->fb_type.fb_cmsize = 256; 175 fb->fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG); 176 printf(": %s, %d x %d", nam, 177 fb->fb_type.fb_width, fb->fb_type.fb_height); 178 179 /* 180 * When the ROM has mapped in a cgtwo display, the address 181 * maps only the video RAM, so in any case we have to map the 182 * registers ourselves. We only need the video RAM if we are 183 * going to print characters via rconsole. 184 */ 185 sc->sc_paddr = va->vma_reg[0]; 186 mod = VMEMOD_A24 | VMEMOD_S | VMEMOD_D; 187 188 if (vme_bus_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 189 offsetof(struct cg2fb, status.reg), 190 sizeof(struct cg2statusreg), mod, bt, &bh) != 0) 191 panic("cgtwo: vme_map status"); 192 sc->sc_reg = (volatile struct cg2statusreg *)bh; 193 194 if (vme_bus_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 195 offsetof(struct cg2fb, redmap[0]), 196 3 * CG2_CMSIZE, mod, bt, &bh) != 0) 197 panic("cgtwo: vme_map cmap"); 198 sc->sc_cmap = (volatile u_short *)bh; 199 200 /* 201 * Assume this is the console if there's no eeprom info 202 * to be found. 203 */ 204 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 205 isconsole = (fbconstty != NULL); 206 else 207 isconsole = 0; 208 209 if (isconsole) { 210 if (vme_bus_map(ct, sc->sc_paddr + CG2_PIXMAP_OFF, 211 CG2_PIXMAP_SIZE, mod, bt, &bh) != 0) 212 panic("cgtwo: vme_map pixels"); 213 214 fb->fb_pixels = (caddr_t)bh; 215 printf(" (console)\n"); 216 #ifdef RASTERCONSOLE 217 fbrcons_init(fb); 218 #endif 219 } else 220 printf("\n"); 221 222 fb_attach(fb, isconsole); 223 } 224 225 int 226 cgtwoopen(dev, flags, mode, p) 227 dev_t dev; 228 int flags, mode; 229 struct proc *p; 230 { 231 int unit = minor(dev); 232 233 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 234 return (ENXIO); 235 return (0); 236 } 237 238 int 239 cgtwoclose(dev, flags, mode, p) 240 dev_t dev; 241 int flags, mode; 242 struct proc *p; 243 { 244 245 return (0); 246 } 247 248 int 249 cgtwoioctl(dev, cmd, data, flags, p) 250 dev_t dev; 251 u_long cmd; 252 register caddr_t data; 253 int flags; 254 struct proc *p; 255 { 256 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 257 register struct fbgattr *fba; 258 259 switch (cmd) { 260 261 case FBIOGTYPE: 262 *(struct fbtype *)data = sc->sc_fb.fb_type; 263 break; 264 265 case FBIOGATTR: 266 fba = (struct fbgattr *)data; 267 fba->real_type = sc->sc_fb.fb_type.fb_type; 268 fba->owner = 0; /* XXX ??? */ 269 fba->fbtype = sc->sc_fb.fb_type; 270 fba->sattr.flags = 0; 271 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 272 fba->sattr.dev_specific[0] = -1; 273 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 274 fba->emu_types[1] = -1; 275 break; 276 277 case FBIOGETCMAP: 278 return cgtwogetcmap(sc, (struct fbcmap *) data); 279 280 case FBIOPUTCMAP: 281 return cgtwoputcmap(sc, (struct fbcmap *) data); 282 283 case FBIOGVIDEO: 284 *(int *)data = sc->sc_reg->video_enab; 285 break; 286 287 case FBIOSVIDEO: 288 sc->sc_reg->video_enab = (*(int*)data) & 1; 289 break; 290 291 default: 292 return (ENOTTY); 293 } 294 return (0); 295 } 296 297 int 298 cgtwopoll(dev, events, p) 299 dev_t dev; 300 int events; 301 struct proc *p; 302 { 303 304 return (seltrue(dev, events, p)); 305 } 306 307 /* 308 * Undo the effect of an FBIOSVIDEO that turns the video off. 309 */ 310 static void 311 cgtwounblank(dev) 312 struct device *dev; 313 { 314 struct cgtwo_softc *sc = (struct cgtwo_softc *)dev; 315 sc->sc_reg->video_enab = 1; 316 } 317 318 /* 319 */ 320 int 321 cgtwogetcmap(sc, cmap) 322 register struct cgtwo_softc *sc; 323 register struct fbcmap *cmap; 324 { 325 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 326 int error, start, count, ecount; 327 register u_int i; 328 register volatile u_short *p; 329 330 start = cmap->index; 331 count = cmap->count; 332 ecount = start + count; 333 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 334 return (EINVAL); 335 336 /* XXX - Wait for retrace? */ 337 338 /* Copy hardware to local arrays. */ 339 p = &sc_redmap(sc)[start]; 340 for (i = start; i < ecount; i++) 341 red[i] = *p++; 342 p = &sc_greenmap(sc)[start]; 343 for (i = start; i < ecount; i++) 344 green[i] = *p++; 345 p = &sc_bluemap(sc)[start]; 346 for (i = start; i < ecount; i++) 347 blue[i] = *p++; 348 349 /* Copy local arrays to user space. */ 350 if ((error = copyout(red + start, cmap->red, count)) != 0) 351 return (error); 352 if ((error = copyout(green + start, cmap->green, count)) != 0) 353 return (error); 354 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 355 return (error); 356 357 return (0); 358 } 359 360 /* 361 */ 362 int 363 cgtwoputcmap(sc, cmap) 364 register struct cgtwo_softc *sc; 365 register struct fbcmap *cmap; 366 { 367 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 368 int error, start, count, ecount; 369 register u_int i; 370 register volatile u_short *p; 371 372 start = cmap->index; 373 count = cmap->count; 374 ecount = start + count; 375 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 376 return (EINVAL); 377 378 /* Copy from user space to local arrays. */ 379 if ((error = copyin(cmap->red, red + start, count)) != 0) 380 return (error); 381 if ((error = copyin(cmap->green, green + start, count)) != 0) 382 return (error); 383 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 384 return (error); 385 386 /* XXX - Wait for retrace? */ 387 388 /* Copy from local arrays to hardware. */ 389 p = &sc_redmap(sc)[start]; 390 for (i = start; i < ecount; i++) 391 *p++ = red[i]; 392 p = &sc_greenmap(sc)[start]; 393 for (i = start; i < ecount; i++) 394 *p++ = green[i]; 395 p = &sc_bluemap(sc)[start]; 396 for (i = start; i < ecount; i++) 397 *p++ = blue[i]; 398 399 return (0); 400 } 401 402 /* 403 * Return the address that would map the given device at the given 404 * offset, allowing for the given protection, or return -1 for error. 405 */ 406 int 407 cgtwommap(dev, off, prot) 408 dev_t dev; 409 int off, prot; 410 { 411 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 412 vme_mod_t mod; 413 bus_space_handle_t bh; 414 415 if (off & PGOFSET) 416 panic("cgtwommap"); 417 418 if ((unsigned)off >= sc->sc_fb.fb_type.fb_size) 419 return (-1); 420 421 /* Apparently, the pixels are in 32-bit data space */ 422 mod = VMEMOD_A24 | VMEMOD_S | VMEMOD_D | VMEMOD_D32; 423 424 if (vme_bus_mmap_cookie(sc->sc_ct, sc->sc_paddr + off, 425 mod, sc->sc_bt, &bh) != 0) 426 panic("cgtwommap"); 427 428 return ((int)bh); 429 } 430