cgtwo.c revision 1.41
1 /* $NetBSD: cgtwo.c,v 1.41 2002/10/23 09:12:07 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/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 CFATTACH_DECL(cgtwo, sizeof(struct cgtwo_softc), 98 cgtwomatch, cgtwoattach, NULL, NULL); 99 100 extern struct cfdriver cgtwo_cd; 101 102 dev_type_open(cgtwoopen); 103 dev_type_ioctl(cgtwoioctl); 104 dev_type_mmap(cgtwommap); 105 106 const struct cdevsw cgtwo_cdevsw = { 107 cgtwoopen, nullclose, noread, nowrite, cgtwoioctl, 108 nostop, notty, nopoll, cgtwommap, nokqfilter, 109 }; 110 111 /* frame buffer generic driver */ 112 static struct fbdriver cgtwofbdriver = { 113 cgtwounblank, cgtwoopen, nullclose, cgtwoioctl, nopoll, cgtwommap, 114 nokqfilter 115 }; 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->va_vct; 128 vme_am_t mod; 129 130 /* 131 * Mask out invalid flags from the user. 132 */ 133 cf->cf_flags &= FB_USERMASK; 134 135 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 136 if (vme_probe(ct, va->r[0].offset + CG2_CTLREG_OFF, 2, mod, VME_D16, 137 0, 0)) { 138 return (0); 139 } 140 141 return (1); 142 } 143 144 /* 145 * Attach a display. We need to notice if it is the console, too. 146 */ 147 void 148 cgtwoattach(parent, self, aux) 149 struct device *parent, *self; 150 void *aux; 151 { 152 struct vme_attach_args *va = aux; 153 vme_chipset_tag_t ct = va->va_vct; 154 bus_space_tag_t bt; 155 bus_space_handle_t bh; 156 vme_am_t mod; 157 vme_mapresc_t resc; 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 fb->fb_driver = &cgtwofbdriver; 166 fb->fb_device = &sc->sc_dev; 167 fb->fb_type.fb_type = FBTYPE_SUN2COLOR; 168 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 169 170 fb->fb_type.fb_depth = 8; 171 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 172 173 fb->fb_type.fb_cmsize = 256; 174 fb->fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG); 175 printf(": %s, %d x %d", nam, 176 fb->fb_type.fb_width, fb->fb_type.fb_height); 177 178 /* 179 * When the ROM has mapped in a cgtwo display, the address 180 * maps only the video RAM, so in any case we have to map the 181 * registers ourselves. We only need the video RAM if we are 182 * going to print characters via rconsole. 183 */ 184 sc->sc_paddr = va->r[0].offset; 185 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 186 187 if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 188 offsetof(struct cg2fb, status.reg), 189 sizeof(struct cg2statusreg), mod, VME_D16, 0, 190 &bt, &bh, &resc) != 0) 191 panic("cgtwo: vme_map status"); 192 sc->sc_bt = bt; 193 sc->sc_reg = (volatile struct cg2statusreg *)bh; /* XXX */ 194 195 if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 196 offsetof(struct cg2fb, redmap[0]), 197 3 * CG2_CMSIZE, mod, VME_D16, 0, 198 &bt, &bh, &resc) != 0) 199 panic("cgtwo: vme_map cmap"); 200 sc->sc_cmap = (volatile u_short *)bh; /* XXX */ 201 202 /* 203 * Assume this is the console if there's no eeprom info 204 * to be found. 205 */ 206 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 207 isconsole = fb_is_console(0); 208 else 209 isconsole = 0; 210 211 if (isconsole) { 212 if (vme_space_map(ct, sc->sc_paddr + CG2_PIXMAP_OFF, 213 CG2_PIXMAP_SIZE, mod, VME_D16, 0, 214 &bt, &bh, &resc) != 0) 215 panic("cgtwo: vme_map pixels"); 216 217 fb->fb_pixels = (caddr_t)bh; /* XXX */ 218 printf(" (console)\n"); 219 #ifdef RASTERCONSOLE 220 fbrcons_init(fb); 221 #endif 222 } else 223 printf("\n"); 224 225 fb_attach(fb, isconsole); 226 } 227 228 int 229 cgtwoopen(dev, flags, mode, p) 230 dev_t dev; 231 int flags, mode; 232 struct proc *p; 233 { 234 int unit = minor(dev); 235 236 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 237 return (ENXIO); 238 return (0); 239 } 240 241 int 242 cgtwoioctl(dev, cmd, data, flags, p) 243 dev_t dev; 244 u_long cmd; 245 register caddr_t data; 246 int flags; 247 struct proc *p; 248 { 249 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 250 register struct fbgattr *fba; 251 252 switch (cmd) { 253 254 case FBIOGTYPE: 255 *(struct fbtype *)data = sc->sc_fb.fb_type; 256 break; 257 258 case FBIOGATTR: 259 fba = (struct fbgattr *)data; 260 fba->real_type = sc->sc_fb.fb_type.fb_type; 261 fba->owner = 0; /* XXX ??? */ 262 fba->fbtype = sc->sc_fb.fb_type; 263 fba->sattr.flags = 0; 264 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 265 fba->sattr.dev_specific[0] = -1; 266 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 267 fba->emu_types[1] = -1; 268 break; 269 270 case FBIOGETCMAP: 271 return cgtwogetcmap(sc, (struct fbcmap *) data); 272 273 case FBIOPUTCMAP: 274 return cgtwoputcmap(sc, (struct fbcmap *) data); 275 276 case FBIOGVIDEO: 277 *(int *)data = sc->sc_reg->video_enab; 278 break; 279 280 case FBIOSVIDEO: 281 sc->sc_reg->video_enab = (*(int*)data) & 1; 282 break; 283 284 default: 285 return (ENOTTY); 286 } 287 return (0); 288 } 289 290 /* 291 * Undo the effect of an FBIOSVIDEO that turns the video off. 292 */ 293 static void 294 cgtwounblank(dev) 295 struct device *dev; 296 { 297 struct cgtwo_softc *sc = (struct cgtwo_softc *)dev; 298 sc->sc_reg->video_enab = 1; 299 } 300 301 /* 302 */ 303 int 304 cgtwogetcmap(sc, cmap) 305 register struct cgtwo_softc *sc; 306 register struct fbcmap *cmap; 307 { 308 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 309 int error, start, count, ecount; 310 register u_int i; 311 register volatile u_short *p; 312 313 start = cmap->index; 314 count = cmap->count; 315 ecount = start + count; 316 if (start >= CG2_CMSIZE || count > CG2_CMSIZE - start) 317 return (EINVAL); 318 319 /* XXX - Wait for retrace? */ 320 321 /* Copy hardware to local arrays. */ 322 p = &sc_redmap(sc)[start]; 323 for (i = start; i < ecount; i++) 324 red[i] = *p++; 325 p = &sc_greenmap(sc)[start]; 326 for (i = start; i < ecount; i++) 327 green[i] = *p++; 328 p = &sc_bluemap(sc)[start]; 329 for (i = start; i < ecount; i++) 330 blue[i] = *p++; 331 332 /* Copy local arrays to user space. */ 333 if ((error = copyout(red + start, cmap->red, count)) != 0) 334 return (error); 335 if ((error = copyout(green + start, cmap->green, count)) != 0) 336 return (error); 337 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 338 return (error); 339 340 return (0); 341 } 342 343 /* 344 */ 345 int 346 cgtwoputcmap(sc, cmap) 347 register struct cgtwo_softc *sc; 348 register struct fbcmap *cmap; 349 { 350 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 351 int error; 352 u_int start, count, ecount; 353 register u_int i; 354 register volatile u_short *p; 355 356 start = cmap->index; 357 count = cmap->count; 358 ecount = start + count; 359 if (start >= CG2_CMSIZE || count > CG2_CMSIZE - start) 360 return (EINVAL); 361 362 /* Copy from user space to local arrays. */ 363 if ((error = copyin(cmap->red, red + start, count)) != 0) 364 return (error); 365 if ((error = copyin(cmap->green, green + start, count)) != 0) 366 return (error); 367 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 368 return (error); 369 370 /* XXX - Wait for retrace? */ 371 372 /* Copy from local arrays to hardware. */ 373 p = &sc_redmap(sc)[start]; 374 for (i = start; i < ecount; i++) 375 *p++ = red[i]; 376 p = &sc_greenmap(sc)[start]; 377 for (i = start; i < ecount; i++) 378 *p++ = green[i]; 379 p = &sc_bluemap(sc)[start]; 380 for (i = start; i < ecount; i++) 381 *p++ = blue[i]; 382 383 return (0); 384 } 385 386 /* 387 * Return the address that would map the given device at the given 388 * offset, allowing for the given protection, or return -1 for error. 389 */ 390 paddr_t 391 cgtwommap(dev, off, prot) 392 dev_t dev; 393 off_t off; 394 int prot; 395 { 396 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 397 vme_am_t mod; 398 bus_space_handle_t bh; 399 extern int sparc_vme_mmap_cookie __P((vme_addr_t, vme_am_t, 400 bus_space_handle_t *)); 401 402 if (off & PGOFSET) 403 panic("cgtwommap"); 404 405 if (off >= sc->sc_fb.fb_type.fb_size) 406 return (-1); 407 408 /* Apparently, the pixels are in 32-bit data space */ 409 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 410 411 if (sparc_vme_mmap_cookie(sc->sc_paddr + off, mod, &bh) != 0) 412 panic("cgtwommap"); 413 414 return ((paddr_t)bh); 415 } 416
Indexes created Mon Sep 22 13:09:51 GMT 2025