cgtwo.c revision 1.55
1 /* $NetBSD: cgtwo.c,v 1.55 2011/07/18 00:05:35 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. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: @(#)cgthree.c 8.2 (Berkeley) 10/30/93 41 */ 42 43 /* 44 * color display (cgtwo) driver. 45 * 46 * Does not handle interrupts, even though they can occur. 47 * 48 * XXX should defer colormap updates to vertical retrace interrupts 49 */ 50 51 #include <sys/cdefs.h> 52 __KERNEL_RCSID(0, "$NetBSD: cgtwo.c,v 1.55 2011/07/18 00:05:35 mrg Exp $"); 53 54 #include <sys/param.h> 55 #include <sys/systm.h> 56 #include <sys/buf.h> 57 #include <sys/device.h> 58 #include <sys/ioctl.h> 59 #include <sys/malloc.h> 60 #include <sys/mman.h> 61 #include <sys/tty.h> 62 #include <sys/conf.h> 63 64 #include <uvm/uvm_extern.h> 65 66 #include <machine/autoconf.h> 67 68 #include <dev/sun/fbio.h> 69 #include <dev/sun/fbvar.h> 70 71 #include <dev/vme/vmevar.h> 72 73 #include <machine/eeprom.h> 74 #include <machine/cgtworeg.h> 75 76 77 /* per-display variables */ 78 struct cgtwo_softc { 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 int cgtwomatch(device_t, cfdata_t, void *); 92 static void cgtwoattach(device_t, device_t, void *); 93 static void cgtwounblank(device_t); 94 int cgtwogetcmap(struct cgtwo_softc *, struct fbcmap *); 95 int cgtwoputcmap(struct cgtwo_softc *, struct fbcmap *); 96 97 CFATTACH_DECL_NEW(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 static int 121 cgtwomatch(device_t parent, cfdata_t cf, void *aux) 122 { 123 struct vme_attach_args *va = aux; 124 vme_chipset_tag_t ct = va->va_vct; 125 vme_am_t mod; 126 127 /* 128 * Mask out invalid flags from the user. 129 */ 130 cf->cf_flags &= FB_USERMASK; 131 132 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 133 if (vme_probe(ct, va->r[0].offset + CG2_CTLREG_OFF, 2, mod, VME_D16, 134 0, 0)) { 135 return (0); 136 } 137 138 return (1); 139 } 140 141 /* 142 * Attach a display. We need to notice if it is the console, too. 143 */ 144 static void 145 cgtwoattach(device_t parent, device_t self, void *aux) 146 { 147 struct vme_attach_args *va = aux; 148 vme_chipset_tag_t ct = va->va_vct; 149 bus_space_tag_t bt; 150 bus_space_handle_t bh; 151 vme_am_t mod; 152 vme_mapresc_t resc; 153 struct cgtwo_softc *sc = device_private(self); 154 struct fbdevice *fb = &sc->sc_fb; 155 struct eeprom *eep = (struct eeprom *)eeprom_va; 156 int isconsole = 0; 157 158 sc->sc_ct = ct; 159 fb->fb_driver = &cgtwofbdriver; 160 fb->fb_device = self; 161 fb->fb_type.fb_type = FBTYPE_SUN2COLOR; 162 fb->fb_flags = device_cfdata(self)->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, PAGE_SIZE); 169 printf(": cgtwo, %d x %d", 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 = (void *)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_t dev, int flags, int mode, struct lwp *l) 224 { 225 int unit = minor(dev); 226 227 if (device_lookup(&cgtwo_cd, unit) == NULL) 228 return (ENXIO); 229 return (0); 230 } 231 232 int 233 cgtwoioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 234 { 235 register struct cgtwo_softc *sc = device_lookup_private(&cgtwo_cd, 236 minor(dev)); 237 register struct fbgattr *fba; 238 239 switch (cmd) { 240 241 case FBIOGTYPE: 242 *(struct fbtype *)data = sc->sc_fb.fb_type; 243 break; 244 245 case FBIOGATTR: 246 fba = (struct fbgattr *)data; 247 fba->real_type = sc->sc_fb.fb_type.fb_type; 248 fba->owner = 0; /* XXX ??? */ 249 fba->fbtype = sc->sc_fb.fb_type; 250 fba->sattr.flags = 0; 251 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 252 fba->sattr.dev_specific[0] = -1; 253 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 254 fba->emu_types[1] = -1; 255 break; 256 257 case FBIOGETCMAP: 258 return cgtwogetcmap(sc, (struct fbcmap *) data); 259 260 case FBIOPUTCMAP: 261 return cgtwoputcmap(sc, (struct fbcmap *) data); 262 263 case FBIOGVIDEO: 264 *(int *)data = sc->sc_reg->video_enab; 265 break; 266 267 case FBIOSVIDEO: 268 sc->sc_reg->video_enab = (*(int*)data) & 1; 269 break; 270 271 default: 272 return (ENOTTY); 273 } 274 return (0); 275 } 276 277 /* 278 * Undo the effect of an FBIOSVIDEO that turns the video off. 279 */ 280 static void 281 cgtwounblank(device_t dev) 282 { 283 struct cgtwo_softc *sc = device_private(dev); 284 sc->sc_reg->video_enab = 1; 285 } 286 287 /* 288 */ 289 int 290 cgtwogetcmap(struct cgtwo_softc *sc, struct fbcmap *cmap) 291 { 292 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 293 int error, start, count, ecount; 294 register u_int i; 295 register volatile u_short *p; 296 297 start = cmap->index; 298 count = cmap->count; 299 ecount = start + count; 300 if (start >= CG2_CMSIZE || count > CG2_CMSIZE - start) 301 return (EINVAL); 302 303 /* XXX - Wait for retrace? */ 304 305 /* Copy hardware to local arrays. */ 306 p = &sc_redmap(sc)[start]; 307 for (i = start; i < ecount; i++) 308 red[i] = *p++; 309 p = &sc_greenmap(sc)[start]; 310 for (i = start; i < ecount; i++) 311 green[i] = *p++; 312 p = &sc_bluemap(sc)[start]; 313 for (i = start; i < ecount; i++) 314 blue[i] = *p++; 315 316 /* Copy local arrays to user space. */ 317 if ((error = copyout(red + start, cmap->red, count)) != 0) 318 return (error); 319 if ((error = copyout(green + start, cmap->green, count)) != 0) 320 return (error); 321 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 322 return (error); 323 324 return (0); 325 } 326 327 /* 328 */ 329 int 330 cgtwoputcmap(struct cgtwo_softc *sc, struct fbcmap *cmap) 331 { 332 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 333 int error; 334 u_int start, count, ecount; 335 register u_int i; 336 register volatile u_short *p; 337 338 start = cmap->index; 339 count = cmap->count; 340 ecount = start + count; 341 if (start >= CG2_CMSIZE || count > CG2_CMSIZE - start) 342 return (EINVAL); 343 344 /* Copy from user space to local arrays. */ 345 if ((error = copyin(cmap->red, red + start, count)) != 0) 346 return (error); 347 if ((error = copyin(cmap->green, green + start, count)) != 0) 348 return (error); 349 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 350 return (error); 351 352 /* XXX - Wait for retrace? */ 353 354 /* Copy from local arrays to hardware. */ 355 p = &sc_redmap(sc)[start]; 356 for (i = start; i < ecount; i++) 357 *p++ = red[i]; 358 p = &sc_greenmap(sc)[start]; 359 for (i = start; i < ecount; i++) 360 *p++ = green[i]; 361 p = &sc_bluemap(sc)[start]; 362 for (i = start; i < ecount; i++) 363 *p++ = blue[i]; 364 365 return (0); 366 } 367 368 /* 369 * Return the address that would map the given device at the given 370 * offset, allowing for the given protection, or return -1 for error. 371 */ 372 paddr_t 373 cgtwommap(dev_t dev, off_t off, int prot) 374 { 375 extern int sparc_vme_mmap_cookie(vme_addr_t, vme_am_t, 376 bus_space_handle_t *); 377 378 register struct cgtwo_softc *sc = device_lookup_private(&cgtwo_cd, 379 minor(dev)); 380 vme_am_t mod; 381 bus_space_handle_t bh; 382 383 if (off & PGOFSET) 384 panic("cgtwommap"); 385 386 if (off >= sc->sc_fb.fb_type.fb_size) 387 return (-1); 388 389 /* Apparently, the pixels are in 32-bit data space */ 390 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 391 392 if (sparc_vme_mmap_cookie(sc->sc_paddr + off, mod, &bh) != 0) 393 panic("cgtwommap"); 394 395 return ((paddr_t)bh); 396 } 397
Indexes created Tue Sep 23 23:09:58 GMT 2025