cgtwo.c revision 1.33
1 /* $NetBSD: cgtwo.c,v 1.33 2000/06/29 07:40:07 mrg 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/fbio.h> 66 #include <machine/autoconf.h> 67 #include <machine/fbvar.h> 68 69 #include <dev/vme/vmevar.h> 70 71 #include <machine/eeprom.h> 72 #include <machine/conf.h> 73 #include <machine/cgtworeg.h> 74 75 76 /* per-display variables */ 77 struct cgtwo_softc { 78 struct device sc_dev; /* base device */ 79 struct fbdevice sc_fb; /* frame buffer device */ 80 vme_addr_t sc_paddr; 81 vme_chipset_tag_t sc_ct; 82 bus_space_tag_t sc_bt; 83 volatile struct cg2statusreg *sc_reg; /* CG2 control registers */ 84 volatile u_short *sc_cmap; 85 #define sc_redmap(sc) ((sc)->sc_cmap) 86 #define sc_greenmap(sc) ((sc)->sc_cmap + CG2_CMSIZE) 87 #define sc_bluemap(sc) ((sc)->sc_cmap + 2 * CG2_CMSIZE) 88 }; 89 90 /* autoconfiguration driver */ 91 static void cgtwoattach __P((struct device *, struct device *, void *)); 92 static int cgtwomatch __P((struct device *, struct cfdata *, void *)); 93 static void cgtwounblank __P((struct device *)); 94 int cgtwogetcmap __P((struct cgtwo_softc *, struct fbcmap *)); 95 int cgtwoputcmap __P((struct cgtwo_softc *, struct fbcmap *)); 96 97 /* cdevsw prototypes */ 98 cdev_decl(cgtwo); 99 100 struct cfattach cgtwo_ca = { 101 sizeof(struct cgtwo_softc), cgtwomatch, cgtwoattach 102 }; 103 104 extern struct cfdriver cgtwo_cd; 105 106 /* frame buffer generic driver */ 107 static struct fbdriver cgtwofbdriver = { 108 cgtwounblank, cgtwoopen, cgtwoclose, cgtwoioctl, cgtwopoll, cgtwommap 109 }; 110 111 /* 112 * Match a cgtwo. 113 */ 114 int 115 cgtwomatch(parent, cf, aux) 116 struct device *parent; 117 struct cfdata *cf; 118 void *aux; 119 { 120 struct vme_attach_args *va = aux; 121 vme_chipset_tag_t ct = va->va_vct; 122 vme_am_t mod; 123 124 /* 125 * Mask out invalid flags from the user. 126 */ 127 cf->cf_flags &= FB_USERMASK; 128 129 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 130 if (vme_probe(ct, va->r[0].offset + CG2_CTLREG_OFF, 2, mod, VME_D16, 131 0, 0)) { 132 return (0); 133 } 134 135 return (1); 136 } 137 138 /* 139 * Attach a display. We need to notice if it is the console, too. 140 */ 141 void 142 cgtwoattach(parent, self, aux) 143 struct device *parent, *self; 144 void *aux; 145 { 146 struct vme_attach_args *va = aux; 147 vme_chipset_tag_t ct = va->va_vct; 148 bus_space_tag_t bt; 149 bus_space_handle_t bh; 150 vme_am_t mod; 151 vme_mapresc_t resc; 152 struct cgtwo_softc *sc = (struct cgtwo_softc *)self; 153 struct fbdevice *fb = &sc->sc_fb; 154 struct eeprom *eep = (struct eeprom *)eeprom_va; 155 int isconsole = 0; 156 char *nam = NULL; 157 158 sc->sc_ct = ct; 159 fb->fb_driver = &cgtwofbdriver; 160 fb->fb_device = &sc->sc_dev; 161 fb->fb_type.fb_type = FBTYPE_SUN2COLOR; 162 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 163 164 fb->fb_type.fb_depth = 8; 165 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 166 167 fb->fb_type.fb_cmsize = 256; 168 fb->fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG); 169 printf(": %s, %d x %d", nam, 170 fb->fb_type.fb_width, fb->fb_type.fb_height); 171 172 /* 173 * When the ROM has mapped in a cgtwo display, the address 174 * maps only the video RAM, so in any case we have to map the 175 * registers ourselves. We only need the video RAM if we are 176 * going to print characters via rconsole. 177 */ 178 sc->sc_paddr = va->r[0].offset; 179 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 180 181 if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 182 offsetof(struct cg2fb, status.reg), 183 sizeof(struct cg2statusreg), mod, VME_D16, 0, 184 &bt, &bh, &resc) != 0) 185 panic("cgtwo: vme_map status"); 186 sc->sc_bt = bt; 187 sc->sc_reg = (volatile struct cg2statusreg *)bh; /* XXX */ 188 189 if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 190 offsetof(struct cg2fb, redmap[0]), 191 3 * CG2_CMSIZE, mod, VME_D16, 0, 192 &bt, &bh, &resc) != 0) 193 panic("cgtwo: vme_map cmap"); 194 sc->sc_cmap = (volatile u_short *)bh; /* XXX */ 195 196 /* 197 * Assume this is the console if there's no eeprom info 198 * to be found. 199 */ 200 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 201 isconsole = fb_is_console(0); 202 else 203 isconsole = 0; 204 205 if (isconsole) { 206 if (vme_space_map(ct, sc->sc_paddr + CG2_PIXMAP_OFF, 207 CG2_PIXMAP_SIZE, mod, VME_D16, 0, 208 &bt, &bh, &resc) != 0) 209 panic("cgtwo: vme_map pixels"); 210 211 fb->fb_pixels = (caddr_t)bh; /* XXX */ 212 printf(" (console)\n"); 213 #ifdef RASTERCONSOLE 214 fbrcons_init(fb); 215 #endif 216 } else 217 printf("\n"); 218 219 fb_attach(fb, isconsole); 220 } 221 222 int 223 cgtwoopen(dev, flags, mode, p) 224 dev_t dev; 225 int flags, mode; 226 struct proc *p; 227 { 228 int unit = minor(dev); 229 230 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 231 return (ENXIO); 232 return (0); 233 } 234 235 int 236 cgtwoclose(dev, flags, mode, p) 237 dev_t dev; 238 int flags, mode; 239 struct proc *p; 240 { 241 242 return (0); 243 } 244 245 int 246 cgtwoioctl(dev, cmd, data, flags, p) 247 dev_t dev; 248 u_long cmd; 249 register caddr_t data; 250 int flags; 251 struct proc *p; 252 { 253 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 254 register struct fbgattr *fba; 255 256 switch (cmd) { 257 258 case FBIOGTYPE: 259 *(struct fbtype *)data = sc->sc_fb.fb_type; 260 break; 261 262 case FBIOGATTR: 263 fba = (struct fbgattr *)data; 264 fba->real_type = sc->sc_fb.fb_type.fb_type; 265 fba->owner = 0; /* XXX ??? */ 266 fba->fbtype = sc->sc_fb.fb_type; 267 fba->sattr.flags = 0; 268 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 269 fba->sattr.dev_specific[0] = -1; 270 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 271 fba->emu_types[1] = -1; 272 break; 273 274 case FBIOGETCMAP: 275 return cgtwogetcmap(sc, (struct fbcmap *) data); 276 277 case FBIOPUTCMAP: 278 return cgtwoputcmap(sc, (struct fbcmap *) data); 279 280 case FBIOGVIDEO: 281 *(int *)data = sc->sc_reg->video_enab; 282 break; 283 284 case FBIOSVIDEO: 285 sc->sc_reg->video_enab = (*(int*)data) & 1; 286 break; 287 288 default: 289 return (ENOTTY); 290 } 291 return (0); 292 } 293 294 int 295 cgtwopoll(dev, events, p) 296 dev_t dev; 297 int events; 298 struct proc *p; 299 { 300 301 return (seltrue(dev, events, p)); 302 } 303 304 /* 305 * Undo the effect of an FBIOSVIDEO that turns the video off. 306 */ 307 static void 308 cgtwounblank(dev) 309 struct device *dev; 310 { 311 struct cgtwo_softc *sc = (struct cgtwo_softc *)dev; 312 sc->sc_reg->video_enab = 1; 313 } 314 315 /* 316 */ 317 int 318 cgtwogetcmap(sc, cmap) 319 register struct cgtwo_softc *sc; 320 register struct fbcmap *cmap; 321 { 322 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 323 int error, start, count, ecount; 324 register u_int i; 325 register volatile u_short *p; 326 327 start = cmap->index; 328 count = cmap->count; 329 ecount = start + count; 330 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 331 return (EINVAL); 332 333 /* XXX - Wait for retrace? */ 334 335 /* Copy hardware to local arrays. */ 336 p = &sc_redmap(sc)[start]; 337 for (i = start; i < ecount; i++) 338 red[i] = *p++; 339 p = &sc_greenmap(sc)[start]; 340 for (i = start; i < ecount; i++) 341 green[i] = *p++; 342 p = &sc_bluemap(sc)[start]; 343 for (i = start; i < ecount; i++) 344 blue[i] = *p++; 345 346 /* Copy local arrays to user space. */ 347 if ((error = copyout(red + start, cmap->red, count)) != 0) 348 return (error); 349 if ((error = copyout(green + start, cmap->green, count)) != 0) 350 return (error); 351 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 352 return (error); 353 354 return (0); 355 } 356 357 /* 358 */ 359 int 360 cgtwoputcmap(sc, cmap) 361 register struct cgtwo_softc *sc; 362 register struct fbcmap *cmap; 363 { 364 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 365 int error, start, count, ecount; 366 register u_int i; 367 register volatile u_short *p; 368 369 start = cmap->index; 370 count = cmap->count; 371 ecount = start + count; 372 if (start >= CG2_CMSIZE || ecount > CG2_CMSIZE) 373 return (EINVAL); 374 375 /* Copy from user space to local arrays. */ 376 if ((error = copyin(cmap->red, red + start, count)) != 0) 377 return (error); 378 if ((error = copyin(cmap->green, green + start, count)) != 0) 379 return (error); 380 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 381 return (error); 382 383 /* XXX - Wait for retrace? */ 384 385 /* Copy from local arrays to hardware. */ 386 p = &sc_redmap(sc)[start]; 387 for (i = start; i < ecount; i++) 388 *p++ = red[i]; 389 p = &sc_greenmap(sc)[start]; 390 for (i = start; i < ecount; i++) 391 *p++ = green[i]; 392 p = &sc_bluemap(sc)[start]; 393 for (i = start; i < ecount; i++) 394 *p++ = blue[i]; 395 396 return (0); 397 } 398 399 /* 400 * Return the address that would map the given device at the given 401 * offset, allowing for the given protection, or return -1 for error. 402 */ 403 paddr_t 404 cgtwommap(dev, off, prot) 405 dev_t dev; 406 off_t off; 407 int prot; 408 { 409 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 410 vme_am_t mod; 411 bus_space_handle_t bh; 412 extern int sparc_vme_mmap_cookie __P((vme_addr_t, vme_am_t, 413 bus_space_handle_t *)); 414 415 if (off & PGOFSET) 416 panic("cgtwommap"); 417 418 if (off >= sc->sc_fb.fb_type.fb_size) 419 return (-1); 420 421 /* Apparently, the pixels are in 32-bit data space */ 422 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 423 424 if (sparc_vme_mmap_cookie(sc->sc_paddr + off, mod, &bh) != 0) 425 panic("cgtwommap"); 426 427 return ((paddr_t)bh); 428 } 429
Indexes created Thu Oct 02 10:09:58 GMT 2025