cgtwo.c revision 1.57
1 /* $NetBSD: cgtwo.c,v 1.57 2014/07/25 08:10:34 dholland 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 1.57 2014/07/25 08:10:34 dholland 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 .d_open = cgtwoopen, 108 .d_close = nullclose, 109 .d_read = noread, 110 .d_write = nowrite, 111 .d_ioctl = cgtwoioctl, 112 .d_stop = nostop, 113 .d_tty = notty, 114 .d_poll = nopoll, 115 .d_mmap = cgtwommap, 116 .d_kqfilter = nokqfilter, 117 .d_discard = nodiscard, 118 .d_flag = 0 119 }; 120 121 /* frame buffer generic driver */ 122 static struct fbdriver cgtwofbdriver = { 123 cgtwounblank, cgtwoopen, nullclose, cgtwoioctl, nopoll, cgtwommap, 124 nokqfilter 125 }; 126 127 /* 128 * Match a cgtwo. 129 */ 130 static int 131 cgtwomatch(device_t parent, cfdata_t cf, void *aux) 132 { 133 struct vme_attach_args *va = aux; 134 vme_chipset_tag_t ct = va->va_vct; 135 vme_am_t mod; 136 137 /* 138 * Mask out invalid flags from the user. 139 */ 140 cf->cf_flags &= FB_USERMASK; 141 142 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 143 if (vme_probe(ct, va->r[0].offset + CG2_CTLREG_OFF, 2, mod, VME_D16, 144 0, 0)) { 145 return (0); 146 } 147 148 return (1); 149 } 150 151 /* 152 * Attach a display. We need to notice if it is the console, too. 153 */ 154 static void 155 cgtwoattach(device_t parent, device_t self, void *aux) 156 { 157 struct vme_attach_args *va = aux; 158 vme_chipset_tag_t ct = va->va_vct; 159 bus_space_tag_t bt; 160 bus_space_handle_t bh; 161 vme_am_t mod; 162 vme_mapresc_t resc; 163 struct cgtwo_softc *sc = device_private(self); 164 struct fbdevice *fb = &sc->sc_fb; 165 struct eeprom *eep = (struct eeprom *)eeprom_va; 166 int isconsole = 0; 167 168 sc->sc_ct = ct; 169 fb->fb_driver = &cgtwofbdriver; 170 fb->fb_device = self; 171 fb->fb_type.fb_type = FBTYPE_SUN2COLOR; 172 fb->fb_flags = device_cfdata(self)->cf_flags; 173 174 fb->fb_type.fb_depth = 8; 175 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 176 177 fb->fb_type.fb_cmsize = 256; 178 fb->fb_type.fb_size = roundup(CG2_MAPPED_SIZE, PAGE_SIZE); 179 printf(": cgtwo, %d x %d", 180 fb->fb_type.fb_width, fb->fb_type.fb_height); 181 182 /* 183 * When the ROM has mapped in a cgtwo display, the address 184 * maps only the video RAM, so in any case we have to map the 185 * registers ourselves. We only need the video RAM if we are 186 * going to print characters via rconsole. 187 */ 188 sc->sc_paddr = va->r[0].offset; 189 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 190 191 if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 192 offsetof(struct cg2fb, status.reg), 193 sizeof(struct cg2statusreg), mod, VME_D16, 0, 194 &bt, &bh, &resc) != 0) 195 panic("cgtwo: vme_map status"); 196 sc->sc_bt = bt; 197 sc->sc_reg = (volatile struct cg2statusreg *)bh; /* XXX */ 198 199 if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 200 offsetof(struct cg2fb, redmap[0]), 201 3 * CG2_CMSIZE, mod, VME_D16, 0, 202 &bt, &bh, &resc) != 0) 203 panic("cgtwo: vme_map cmap"); 204 sc->sc_cmap = (volatile u_short *)bh; /* XXX */ 205 206 /* 207 * Assume this is the console if there's no eeprom info 208 * to be found. 209 */ 210 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 211 isconsole = fb_is_console(0); 212 else 213 isconsole = 0; 214 215 if (isconsole) { 216 if (vme_space_map(ct, sc->sc_paddr + CG2_PIXMAP_OFF, 217 CG2_PIXMAP_SIZE, mod, VME_D16, 0, 218 &bt, &bh, &resc) != 0) 219 panic("cgtwo: vme_map pixels"); 220 221 fb->fb_pixels = (void *)bh; /* XXX */ 222 printf(" (console)\n"); 223 #ifdef RASTERCONSOLE 224 fbrcons_init(fb); 225 #endif 226 } else 227 printf("\n"); 228 229 fb_attach(fb, isconsole); 230 } 231 232 int 233 cgtwoopen(dev_t dev, int flags, int mode, struct lwp *l) 234 { 235 int unit = minor(dev); 236 237 if (device_lookup(&cgtwo_cd, unit) == NULL) 238 return (ENXIO); 239 return (0); 240 } 241 242 int 243 cgtwoioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 244 { 245 register struct cgtwo_softc *sc = device_lookup_private(&cgtwo_cd, 246 minor(dev)); 247 register struct fbgattr *fba; 248 249 switch (cmd) { 250 251 case FBIOGTYPE: 252 *(struct fbtype *)data = sc->sc_fb.fb_type; 253 break; 254 255 case FBIOGATTR: 256 fba = (struct fbgattr *)data; 257 fba->real_type = sc->sc_fb.fb_type.fb_type; 258 fba->owner = 0; /* XXX ??? */ 259 fba->fbtype = sc->sc_fb.fb_type; 260 fba->sattr.flags = 0; 261 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 262 fba->sattr.dev_specific[0] = -1; 263 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 264 fba->emu_types[1] = -1; 265 break; 266 267 case FBIOGETCMAP: 268 return cgtwogetcmap(sc, (struct fbcmap *) data); 269 270 case FBIOPUTCMAP: 271 return cgtwoputcmap(sc, (struct fbcmap *) data); 272 273 case FBIOGVIDEO: 274 *(int *)data = sc->sc_reg->video_enab; 275 break; 276 277 case FBIOSVIDEO: 278 sc->sc_reg->video_enab = (*(int*)data) & 1; 279 break; 280 281 default: 282 return (ENOTTY); 283 } 284 return (0); 285 } 286 287 /* 288 * Undo the effect of an FBIOSVIDEO that turns the video off. 289 */ 290 static void 291 cgtwounblank(device_t dev) 292 { 293 struct cgtwo_softc *sc = device_private(dev); 294 sc->sc_reg->video_enab = 1; 295 } 296 297 /* 298 */ 299 int 300 cgtwogetcmap(struct cgtwo_softc *sc, struct fbcmap *cmap) 301 { 302 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 303 int error, start, count, ecount; 304 register u_int i; 305 register volatile u_short *p; 306 307 start = cmap->index; 308 count = cmap->count; 309 ecount = start + count; 310 if (start >= CG2_CMSIZE || count > CG2_CMSIZE - start) 311 return (EINVAL); 312 313 /* XXX - Wait for retrace? */ 314 315 /* Copy hardware to local arrays. */ 316 p = &sc_redmap(sc)[start]; 317 for (i = start; i < ecount; i++) 318 red[i] = *p++; 319 p = &sc_greenmap(sc)[start]; 320 for (i = start; i < ecount; i++) 321 green[i] = *p++; 322 p = &sc_bluemap(sc)[start]; 323 for (i = start; i < ecount; i++) 324 blue[i] = *p++; 325 326 /* Copy local arrays to user space. */ 327 if ((error = copyout(red + start, cmap->red, count)) != 0) 328 return (error); 329 if ((error = copyout(green + start, cmap->green, count)) != 0) 330 return (error); 331 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 332 return (error); 333 334 return (0); 335 } 336 337 /* 338 */ 339 int 340 cgtwoputcmap(struct cgtwo_softc *sc, struct fbcmap *cmap) 341 { 342 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 343 int error; 344 u_int start, count, ecount; 345 register u_int i; 346 register volatile u_short *p; 347 348 start = cmap->index; 349 count = cmap->count; 350 ecount = start + count; 351 if (start >= CG2_CMSIZE || count > CG2_CMSIZE - start) 352 return (EINVAL); 353 354 /* Copy from user space to local arrays. */ 355 if ((error = copyin(cmap->red, red + start, count)) != 0) 356 return (error); 357 if ((error = copyin(cmap->green, green + start, count)) != 0) 358 return (error); 359 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 360 return (error); 361 362 /* XXX - Wait for retrace? */ 363 364 /* Copy from local arrays to hardware. */ 365 p = &sc_redmap(sc)[start]; 366 for (i = start; i < ecount; i++) 367 *p++ = red[i]; 368 p = &sc_greenmap(sc)[start]; 369 for (i = start; i < ecount; i++) 370 *p++ = green[i]; 371 p = &sc_bluemap(sc)[start]; 372 for (i = start; i < ecount; i++) 373 *p++ = blue[i]; 374 375 return (0); 376 } 377 378 /* 379 * Return the address that would map the given device at the given 380 * offset, allowing for the given protection, or return -1 for error. 381 */ 382 paddr_t 383 cgtwommap(dev_t dev, off_t off, int prot) 384 { 385 extern int sparc_vme_mmap_cookie(vme_addr_t, vme_am_t, 386 bus_space_handle_t *); 387 388 register struct cgtwo_softc *sc = device_lookup_private(&cgtwo_cd, 389 minor(dev)); 390 vme_am_t mod; 391 bus_space_handle_t bh; 392 393 if (off & PGOFSET) 394 panic("cgtwommap"); 395 396 if (off >= sc->sc_fb.fb_type.fb_size) 397 return (-1); 398 399 /* Apparently, the pixels are in 32-bit data space */ 400 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 401 402 if (sparc_vme_mmap_cookie(sc->sc_paddr + off, mod, &bh) != 0) 403 panic("cgtwommap"); 404 405 return ((paddr_t)bh); 406 } 407
Indexes created Mon Sep 22 13:09:51 GMT 2025