cgtwo.c revision 1.39
1 /* $NetBSD: cgtwo.c,v 1.39 2002/10/01 18:57:51 thorpej 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, 109 }; 110 111 /* frame buffer generic driver */ 112 static struct fbdriver cgtwofbdriver = { 113 cgtwounblank, cgtwoopen, nullclose, cgtwoioctl, nopoll, cgtwommap 114 }; 115 116 /* 117 * Match a cgtwo. 118 */ 119 int 120 cgtwomatch(parent, cf, aux) 121 struct device *parent; 122 struct cfdata *cf; 123 void *aux; 124 { 125 struct vme_attach_args *va = aux; 126 vme_chipset_tag_t ct = va->va_vct; 127 vme_am_t mod; 128 129 /* 130 * Mask out invalid flags from the user. 131 */ 132 cf->cf_flags &= FB_USERMASK; 133 134 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 135 if (vme_probe(ct, va->r[0].offset + CG2_CTLREG_OFF, 2, mod, VME_D16, 136 0, 0)) { 137 return (0); 138 } 139 140 return (1); 141 } 142 143 /* 144 * Attach a display. We need to notice if it is the console, too. 145 */ 146 void 147 cgtwoattach(parent, self, aux) 148 struct device *parent, *self; 149 void *aux; 150 { 151 struct vme_attach_args *va = aux; 152 vme_chipset_tag_t ct = va->va_vct; 153 bus_space_tag_t bt; 154 bus_space_handle_t bh; 155 vme_am_t mod; 156 vme_mapresc_t resc; 157 struct cgtwo_softc *sc = (struct cgtwo_softc *)self; 158 struct fbdevice *fb = &sc->sc_fb; 159 struct eeprom *eep = (struct eeprom *)eeprom_va; 160 int isconsole = 0; 161 char *nam = NULL; 162 163 sc->sc_ct = ct; 164 fb->fb_driver = &cgtwofbdriver; 165 fb->fb_device = &sc->sc_dev; 166 fb->fb_type.fb_type = FBTYPE_SUN2COLOR; 167 fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags; 168 169 fb->fb_type.fb_depth = 8; 170 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 171 172 fb->fb_type.fb_cmsize = 256; 173 fb->fb_type.fb_size = roundup(CG2_MAPPED_SIZE, NBPG); 174 printf(": %s, %d x %d", nam, 175 fb->fb_type.fb_width, fb->fb_type.fb_height); 176 177 /* 178 * When the ROM has mapped in a cgtwo display, the address 179 * maps only the video RAM, so in any case we have to map the 180 * registers ourselves. We only need the video RAM if we are 181 * going to print characters via rconsole. 182 */ 183 sc->sc_paddr = va->r[0].offset; 184 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 185 186 if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 187 offsetof(struct cg2fb, status.reg), 188 sizeof(struct cg2statusreg), mod, VME_D16, 0, 189 &bt, &bh, &resc) != 0) 190 panic("cgtwo: vme_map status"); 191 sc->sc_bt = bt; 192 sc->sc_reg = (volatile struct cg2statusreg *)bh; /* XXX */ 193 194 if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 195 offsetof(struct cg2fb, redmap[0]), 196 3 * CG2_CMSIZE, mod, VME_D16, 0, 197 &bt, &bh, &resc) != 0) 198 panic("cgtwo: vme_map cmap"); 199 sc->sc_cmap = (volatile u_short *)bh; /* XXX */ 200 201 /* 202 * Assume this is the console if there's no eeprom info 203 * to be found. 204 */ 205 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 206 isconsole = fb_is_console(0); 207 else 208 isconsole = 0; 209 210 if (isconsole) { 211 if (vme_space_map(ct, sc->sc_paddr + CG2_PIXMAP_OFF, 212 CG2_PIXMAP_SIZE, mod, VME_D16, 0, 213 &bt, &bh, &resc) != 0) 214 panic("cgtwo: vme_map pixels"); 215 216 fb->fb_pixels = (caddr_t)bh; /* XXX */ 217 printf(" (console)\n"); 218 #ifdef RASTERCONSOLE 219 fbrcons_init(fb); 220 #endif 221 } else 222 printf("\n"); 223 224 fb_attach(fb, isconsole); 225 } 226 227 int 228 cgtwoopen(dev, flags, mode, p) 229 dev_t dev; 230 int flags, mode; 231 struct proc *p; 232 { 233 int unit = minor(dev); 234 235 if (unit >= cgtwo_cd.cd_ndevs || cgtwo_cd.cd_devs[unit] == NULL) 236 return (ENXIO); 237 return (0); 238 } 239 240 int 241 cgtwoioctl(dev, cmd, data, flags, p) 242 dev_t dev; 243 u_long cmd; 244 register caddr_t data; 245 int flags; 246 struct proc *p; 247 { 248 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 249 register struct fbgattr *fba; 250 251 switch (cmd) { 252 253 case FBIOGTYPE: 254 *(struct fbtype *)data = sc->sc_fb.fb_type; 255 break; 256 257 case FBIOGATTR: 258 fba = (struct fbgattr *)data; 259 fba->real_type = sc->sc_fb.fb_type.fb_type; 260 fba->owner = 0; /* XXX ??? */ 261 fba->fbtype = sc->sc_fb.fb_type; 262 fba->sattr.flags = 0; 263 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 264 fba->sattr.dev_specific[0] = -1; 265 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 266 fba->emu_types[1] = -1; 267 break; 268 269 case FBIOGETCMAP: 270 return cgtwogetcmap(sc, (struct fbcmap *) data); 271 272 case FBIOPUTCMAP: 273 return cgtwoputcmap(sc, (struct fbcmap *) data); 274 275 case FBIOGVIDEO: 276 *(int *)data = sc->sc_reg->video_enab; 277 break; 278 279 case FBIOSVIDEO: 280 sc->sc_reg->video_enab = (*(int*)data) & 1; 281 break; 282 283 default: 284 return (ENOTTY); 285 } 286 return (0); 287 } 288 289 /* 290 * Undo the effect of an FBIOSVIDEO that turns the video off. 291 */ 292 static void 293 cgtwounblank(dev) 294 struct device *dev; 295 { 296 struct cgtwo_softc *sc = (struct cgtwo_softc *)dev; 297 sc->sc_reg->video_enab = 1; 298 } 299 300 /* 301 */ 302 int 303 cgtwogetcmap(sc, cmap) 304 register struct cgtwo_softc *sc; 305 register struct fbcmap *cmap; 306 { 307 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 308 int error, start, count, ecount; 309 register u_int i; 310 register volatile u_short *p; 311 312 start = cmap->index; 313 count = cmap->count; 314 ecount = start + count; 315 if (start >= CG2_CMSIZE || count > CG2_CMSIZE - start) 316 return (EINVAL); 317 318 /* XXX - Wait for retrace? */ 319 320 /* Copy hardware to local arrays. */ 321 p = &sc_redmap(sc)[start]; 322 for (i = start; i < ecount; i++) 323 red[i] = *p++; 324 p = &sc_greenmap(sc)[start]; 325 for (i = start; i < ecount; i++) 326 green[i] = *p++; 327 p = &sc_bluemap(sc)[start]; 328 for (i = start; i < ecount; i++) 329 blue[i] = *p++; 330 331 /* Copy local arrays to user space. */ 332 if ((error = copyout(red + start, cmap->red, count)) != 0) 333 return (error); 334 if ((error = copyout(green + start, cmap->green, count)) != 0) 335 return (error); 336 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 337 return (error); 338 339 return (0); 340 } 341 342 /* 343 */ 344 int 345 cgtwoputcmap(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; 351 u_int start, count, ecount; 352 register u_int i; 353 register volatile u_short *p; 354 355 start = cmap->index; 356 count = cmap->count; 357 ecount = start + count; 358 if (start >= CG2_CMSIZE || count > CG2_CMSIZE - start) 359 return (EINVAL); 360 361 /* Copy from user space to local arrays. */ 362 if ((error = copyin(cmap->red, red + start, count)) != 0) 363 return (error); 364 if ((error = copyin(cmap->green, green + start, count)) != 0) 365 return (error); 366 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 367 return (error); 368 369 /* XXX - Wait for retrace? */ 370 371 /* Copy from local arrays to hardware. */ 372 p = &sc_redmap(sc)[start]; 373 for (i = start; i < ecount; i++) 374 *p++ = red[i]; 375 p = &sc_greenmap(sc)[start]; 376 for (i = start; i < ecount; i++) 377 *p++ = green[i]; 378 p = &sc_bluemap(sc)[start]; 379 for (i = start; i < ecount; i++) 380 *p++ = blue[i]; 381 382 return (0); 383 } 384 385 /* 386 * Return the address that would map the given device at the given 387 * offset, allowing for the given protection, or return -1 for error. 388 */ 389 paddr_t 390 cgtwommap(dev, off, prot) 391 dev_t dev; 392 off_t off; 393 int prot; 394 { 395 register struct cgtwo_softc *sc = cgtwo_cd.cd_devs[minor(dev)]; 396 vme_am_t mod; 397 bus_space_handle_t bh; 398 extern int sparc_vme_mmap_cookie __P((vme_addr_t, vme_am_t, 399 bus_space_handle_t *)); 400 401 if (off & PGOFSET) 402 panic("cgtwommap"); 403 404 if (off >= sc->sc_fb.fb_type.fb_size) 405 return (-1); 406 407 /* Apparently, the pixels are in 32-bit data space */ 408 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 409 410 if (sparc_vme_mmap_cookie(sc->sc_paddr + off, mod, &bh) != 0) 411 panic("cgtwommap"); 412 413 return ((paddr_t)bh); 414 } 415
Indexes created Wed Sep 24 05:09:52 GMT 2025