1 /* $NetBSD: cgtwo.c,v 1.58 2023/12/20 05:33:18 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. 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 1.58 2023/12/20 05:33:18 thorpej 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/mman.h> 60 #include <sys/tty.h> 61 #include <sys/conf.h> 62 63 #include <uvm/uvm_extern.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 fbdevice sc_fb; /* frame buffer device */ 79 vme_addr_t sc_paddr; 80 vme_chipset_tag_t sc_ct; 81 bus_space_tag_t sc_bt; 82 volatile struct cg2statusreg *sc_reg; /* CG2 control registers */ 83 volatile u_short *sc_cmap; 84 #define sc_redmap(sc) ((sc)->sc_cmap) 85 #define sc_greenmap(sc) ((sc)->sc_cmap + CG2_CMSIZE) 86 #define sc_bluemap(sc) ((sc)->sc_cmap + 2 * CG2_CMSIZE) 87 }; 88 89 /* autoconfiguration driver */ 90 static int cgtwomatch(device_t, cfdata_t, void *); 91 static void cgtwoattach(device_t, device_t, void *); 92 static void cgtwounblank(device_t); 93 int cgtwogetcmap(struct cgtwo_softc *, struct fbcmap *); 94 int cgtwoputcmap(struct cgtwo_softc *, struct fbcmap *); 95 96 CFATTACH_DECL_NEW(cgtwo, sizeof(struct cgtwo_softc), 97 cgtwomatch, cgtwoattach, NULL, NULL); 98 99 extern struct cfdriver cgtwo_cd; 100 101 dev_type_open(cgtwoopen); 102 dev_type_ioctl(cgtwoioctl); 103 dev_type_mmap(cgtwommap); 104 105 const struct cdevsw cgtwo_cdevsw = { 106 .d_open = cgtwoopen, 107 .d_close = nullclose, 108 .d_read = noread, 109 .d_write = nowrite, 110 .d_ioctl = cgtwoioctl, 111 .d_stop = nostop, 112 .d_tty = notty, 113 .d_poll = nopoll, 114 .d_mmap = cgtwommap, 115 .d_kqfilter = nokqfilter, 116 .d_discard = nodiscard, 117 .d_flag = 0 118 }; 119 120 /* frame buffer generic driver */ 121 static struct fbdriver cgtwofbdriver = { 122 cgtwounblank, cgtwoopen, nullclose, cgtwoioctl, nopoll, cgtwommap, 123 nokqfilter 124 }; 125 126 /* 127 * Match a cgtwo. 128 */ 129 static int 130 cgtwomatch(device_t parent, cfdata_t cf, void *aux) 131 { 132 struct vme_attach_args *va = aux; 133 vme_chipset_tag_t ct = va->va_vct; 134 vme_am_t mod; 135 136 /* 137 * Mask out invalid flags from the user. 138 */ 139 cf->cf_flags &= FB_USERMASK; 140 141 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 142 if (vme_probe(ct, va->r[0].offset + CG2_CTLREG_OFF, 2, mod, VME_D16, 143 0, 0)) { 144 return (0); 145 } 146 147 return (1); 148 } 149 150 /* 151 * Attach a display. We need to notice if it is the console, too. 152 */ 153 static void 154 cgtwoattach(device_t parent, device_t self, void *aux) 155 { 156 struct vme_attach_args *va = aux; 157 vme_chipset_tag_t ct = va->va_vct; 158 bus_space_tag_t bt; 159 bus_space_handle_t bh; 160 vme_am_t mod; 161 vme_mapresc_t resc; 162 struct cgtwo_softc *sc = device_private(self); 163 struct fbdevice *fb = &sc->sc_fb; 164 struct eeprom *eep = (struct eeprom *)eeprom_va; 165 int isconsole = 0; 166 167 sc->sc_ct = ct; 168 fb->fb_driver = &cgtwofbdriver; 169 fb->fb_device = self; 170 fb->fb_type.fb_type = FBTYPE_SUN2COLOR; 171 fb->fb_flags = device_cfdata(self)->cf_flags; 172 173 fb->fb_type.fb_depth = 8; 174 fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); 175 176 fb->fb_type.fb_cmsize = 256; 177 fb->fb_type.fb_size = roundup(CG2_MAPPED_SIZE, PAGE_SIZE); 178 printf(": cgtwo, %d x %d", 179 fb->fb_type.fb_width, fb->fb_type.fb_height); 180 181 /* 182 * When the ROM has mapped in a cgtwo display, the address 183 * maps only the video RAM, so in any case we have to map the 184 * registers ourselves. We only need the video RAM if we are 185 * going to print characters via rconsole. 186 */ 187 sc->sc_paddr = va->r[0].offset; 188 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 189 190 if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 191 offsetof(struct cg2fb, status.reg), 192 sizeof(struct cg2statusreg), mod, VME_D16, 0, 193 &bt, &bh, &resc) != 0) 194 panic("cgtwo: vme_map status"); 195 sc->sc_bt = bt; 196 sc->sc_reg = (volatile struct cg2statusreg *)bh; /* XXX */ 197 198 if (vme_space_map(ct, sc->sc_paddr + CG2_ROPMEM_OFF + 199 offsetof(struct cg2fb, redmap[0]), 200 3 * CG2_CMSIZE, mod, VME_D16, 0, 201 &bt, &bh, &resc) != 0) 202 panic("cgtwo: vme_map cmap"); 203 sc->sc_cmap = (volatile u_short *)bh; /* XXX */ 204 205 /* 206 * Assume this is the console if there's no eeprom info 207 * to be found. 208 */ 209 if (eep == NULL || eep->eeConsole == EE_CONS_COLOR) 210 isconsole = fb_is_console(0); 211 else 212 isconsole = 0; 213 214 if (isconsole) { 215 if (vme_space_map(ct, sc->sc_paddr + CG2_PIXMAP_OFF, 216 CG2_PIXMAP_SIZE, mod, VME_D16, 0, 217 &bt, &bh, &resc) != 0) 218 panic("cgtwo: vme_map pixels"); 219 220 fb->fb_pixels = (void *)bh; /* XXX */ 221 printf(" (console)\n"); 222 #ifdef RASTERCONSOLE 223 fbrcons_init(fb); 224 #endif 225 } else 226 printf("\n"); 227 228 fb_attach(fb, isconsole); 229 } 230 231 int 232 cgtwoopen(dev_t dev, int flags, int mode, struct lwp *l) 233 { 234 int unit = minor(dev); 235 236 if (device_lookup(&cgtwo_cd, unit) == NULL) 237 return (ENXIO); 238 return (0); 239 } 240 241 int 242 cgtwoioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 243 { 244 register struct cgtwo_softc *sc = device_lookup_private(&cgtwo_cd, 245 minor(dev)); 246 register struct fbgattr *fba; 247 248 switch (cmd) { 249 250 case FBIOGTYPE: 251 *(struct fbtype *)data = sc->sc_fb.fb_type; 252 break; 253 254 case FBIOGATTR: 255 fba = (struct fbgattr *)data; 256 fba->real_type = sc->sc_fb.fb_type.fb_type; 257 fba->owner = 0; /* XXX ??? */ 258 fba->fbtype = sc->sc_fb.fb_type; 259 fba->sattr.flags = 0; 260 fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; 261 fba->sattr.dev_specific[0] = -1; 262 fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; 263 fba->emu_types[1] = -1; 264 break; 265 266 case FBIOGETCMAP: 267 return cgtwogetcmap(sc, (struct fbcmap *) data); 268 269 case FBIOPUTCMAP: 270 return cgtwoputcmap(sc, (struct fbcmap *) data); 271 272 case FBIOGVIDEO: 273 *(int *)data = sc->sc_reg->video_enab; 274 break; 275 276 case FBIOSVIDEO: 277 sc->sc_reg->video_enab = (*(int*)data) & 1; 278 break; 279 280 default: 281 return (ENOTTY); 282 } 283 return (0); 284 } 285 286 /* 287 * Undo the effect of an FBIOSVIDEO that turns the video off. 288 */ 289 static void 290 cgtwounblank(device_t dev) 291 { 292 struct cgtwo_softc *sc = device_private(dev); 293 sc->sc_reg->video_enab = 1; 294 } 295 296 /* 297 */ 298 int 299 cgtwogetcmap(struct cgtwo_softc *sc, struct fbcmap *cmap) 300 { 301 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 302 int error, start, count, ecount; 303 register u_int i; 304 register volatile u_short *p; 305 306 start = cmap->index; 307 count = cmap->count; 308 ecount = start + count; 309 if (start >= CG2_CMSIZE || count > CG2_CMSIZE - start) 310 return (EINVAL); 311 312 /* XXX - Wait for retrace? */ 313 314 /* Copy hardware to local arrays. */ 315 p = &sc_redmap(sc)[start]; 316 for (i = start; i < ecount; i++) 317 red[i] = *p++; 318 p = &sc_greenmap(sc)[start]; 319 for (i = start; i < ecount; i++) 320 green[i] = *p++; 321 p = &sc_bluemap(sc)[start]; 322 for (i = start; i < ecount; i++) 323 blue[i] = *p++; 324 325 /* Copy local arrays to user space. */ 326 if ((error = copyout(red + start, cmap->red, count)) != 0) 327 return (error); 328 if ((error = copyout(green + start, cmap->green, count)) != 0) 329 return (error); 330 if ((error = copyout(blue + start, cmap->blue, count)) != 0) 331 return (error); 332 333 return (0); 334 } 335 336 /* 337 */ 338 int 339 cgtwoputcmap(struct cgtwo_softc *sc, struct fbcmap *cmap) 340 { 341 u_char red[CG2_CMSIZE], green[CG2_CMSIZE], blue[CG2_CMSIZE]; 342 int error; 343 u_int start, count, ecount; 344 register u_int i; 345 register volatile u_short *p; 346 347 start = cmap->index; 348 count = cmap->count; 349 ecount = start + count; 350 if (start >= CG2_CMSIZE || count > CG2_CMSIZE - start) 351 return (EINVAL); 352 353 /* Copy from user space to local arrays. */ 354 if ((error = copyin(cmap->red, red + start, count)) != 0) 355 return (error); 356 if ((error = copyin(cmap->green, green + start, count)) != 0) 357 return (error); 358 if ((error = copyin(cmap->blue, blue + start, count)) != 0) 359 return (error); 360 361 /* XXX - Wait for retrace? */ 362 363 /* Copy from local arrays to hardware. */ 364 p = &sc_redmap(sc)[start]; 365 for (i = start; i < ecount; i++) 366 *p++ = red[i]; 367 p = &sc_greenmap(sc)[start]; 368 for (i = start; i < ecount; i++) 369 *p++ = green[i]; 370 p = &sc_bluemap(sc)[start]; 371 for (i = start; i < ecount; i++) 372 *p++ = blue[i]; 373 374 return (0); 375 } 376 377 /* 378 * Return the address that would map the given device at the given 379 * offset, allowing for the given protection, or return -1 for error. 380 */ 381 paddr_t 382 cgtwommap(dev_t dev, off_t off, int prot) 383 { 384 extern int sparc_vme_mmap_cookie(vme_addr_t, vme_am_t, 385 bus_space_handle_t *); 386 387 register struct cgtwo_softc *sc = device_lookup_private(&cgtwo_cd, 388 minor(dev)); 389 vme_am_t mod; 390 bus_space_handle_t bh; 391 392 if (off & PGOFSET) 393 panic("cgtwommap"); 394 395 if (off >= sc->sc_fb.fb_type.fb_size) 396 return (-1); 397 398 /* Apparently, the pixels are in 32-bit data space */ 399 mod = 0x3d; /* VME_AM_A24 | VME_AM_MBO | VME_AM_SUPER | VME_AM_DATA */ 400 401 if (sparc_vme_mmap_cookie(sc->sc_paddr + off, mod, &bh) != 0) 402 panic("cgtwommap"); 403 404 return ((paddr_t)bh); 405 } 406
Indexes created Sat Sep 20 22:09:52 GMT 2025