ofb.c revision 1.11
1 /* $NetBSD: ofb.c,v 1.11 2000/02/09 13:08:36 tsubai Exp $ */ 2 3 /* 4 * Copyright (c) 1995, 1996 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Author: Chris G. Demetriou 8 * 9 * Permission to use, copy, modify and distribute this software and 10 * its documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation. 14 * 15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 17 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 * 19 * Carnegie Mellon requests users of this software to return to 20 * 21 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 22 * School of Computer Science 23 * Carnegie Mellon University 24 * Pittsburgh PA 15213-3890 25 * 26 * any improvements or extensions that they make and grant Carnegie the 27 * rights to redistribute these changes. 28 */ 29 30 #include <sys/param.h> 31 #include <sys/buf.h> 32 #include <sys/conf.h> 33 #include <sys/device.h> 34 #include <sys/ioctl.h> 35 #include <sys/kernel.h> 36 #include <sys/malloc.h> 37 #include <sys/systm.h> 38 39 #include <vm/vm.h> 40 41 #include <dev/pci/pcidevs.h> 42 #include <dev/pci/pcireg.h> 43 #include <dev/pci/pcivar.h> 44 45 #include <dev/wscons/wsconsio.h> 46 #include <dev/wscons/wsdisplayvar.h> 47 #include <dev/rasops/rasops.h> 48 49 #include <machine/bus.h> 50 #include <machine/grfioctl.h> 51 52 #include <macppc/dev/ofbvar.h> 53 54 int ofbmatch __P((struct device *, struct cfdata *, void *)); 55 void ofbattach __P((struct device *, struct device *, void *)); 56 int ofbprint __P((void *, const char *)); 57 58 struct cfattach ofb_ca = { 59 sizeof(struct ofb_softc), ofbmatch, ofbattach, 60 }; 61 62 struct ofb_devconfig ofb_console_dc; 63 64 struct wsscreen_descr ofb_stdscreen = { 65 "std", 66 0, 0, /* will be filled in -- XXX shouldn't, it's global */ 67 0, 68 0, 0, 69 WSSCREEN_REVERSE 70 }; 71 72 const struct wsscreen_descr *_ofb_scrlist[] = { 73 &ofb_stdscreen, 74 /* XXX other formats, graphics screen? */ 75 }; 76 77 struct wsscreen_list ofb_screenlist = { 78 sizeof(_ofb_scrlist) / sizeof(struct wsscreen_descr *), _ofb_scrlist 79 }; 80 81 static int ofb_ioctl __P((void *, u_long, caddr_t, int, struct proc *)); 82 static int ofb_mmap __P((void *, off_t, int)); 83 static int ofb_alloc_screen __P((void *, const struct wsscreen_descr *, 84 void **, int *, int *, long *)); 85 static void ofb_free_screen __P((void *, void *)); 86 static int ofb_show_screen __P((void *, void *, int, 87 void (*) (void *, int, int), void *)); 88 89 struct wsdisplay_accessops ofb_accessops = { 90 ofb_ioctl, 91 ofb_mmap, 92 ofb_alloc_screen, 93 ofb_free_screen, 94 ofb_show_screen, 95 0 /* load_font */ 96 }; 97 98 static struct wsdisplay_font openfirm6x11; 99 100 static void ofb_common_init __P((int, struct ofb_devconfig *)); 101 static int ofb_getcmap __P((struct ofb_softc *, struct wsdisplay_cmap *)); 102 static int ofb_putcmap __P((struct ofb_softc *, struct wsdisplay_cmap *)); 103 104 int 105 ofbmatch(parent, match, aux) 106 struct device *parent; 107 struct cfdata *match; 108 void *aux; 109 { 110 struct pci_attach_args *pa = aux; 111 112 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_APPLE && 113 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_CONTROL) 114 return 1; 115 116 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY) 117 return 1; 118 119 return 0; 120 } 121 122 void 123 ofbattach(parent, self, aux) 124 struct device *parent, *self; 125 void *aux; 126 { 127 struct ofb_softc *sc = (struct ofb_softc *)self; 128 struct pci_attach_args *pa = aux; 129 struct wsemuldisplaydev_attach_args a; 130 int console; 131 struct ofb_devconfig *dc; 132 char devinfo[256]; 133 134 console = ofb_is_console(); 135 136 if (console) { 137 dc = &ofb_console_dc; 138 sc->nscreens = 1; 139 } else { 140 int node, i, screenbytes; 141 142 dc = malloc(sizeof(struct ofb_devconfig), M_DEVBUF, M_WAITOK); 143 bzero(dc, sizeof(struct ofb_devconfig)); 144 node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); 145 if (node == 0) { 146 printf(": ofdev not found\n"); 147 return; 148 } 149 ofb_common_init(node, dc); 150 151 screenbytes = dc->dc_ri.ri_stride * dc->dc_ri.ri_height; 152 for (i = 0; i < screenbytes; i += sizeof(u_int32_t)) 153 *(u_int32_t *)(dc->dc_paddr + i) = 0xffffffff; 154 } 155 sc->sc_dc = dc; 156 157 if (dc->dc_paddr == 0) { 158 printf(": cannot map framebuffer\n"); 159 return; 160 } 161 162 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 163 printf(": %s\n", devinfo); 164 printf("%s: %d x %d, %dbpp\n", self->dv_xname, 165 dc->dc_ri.ri_width, dc->dc_ri.ri_height, dc->dc_ri.ri_depth); 166 167 sc->sc_cmap_red[0] = sc->sc_cmap_green[0] = sc->sc_cmap_blue[0] = 0; 168 sc->sc_cmap_red[15] = sc->sc_cmap_red[255] = 0xff; 169 sc->sc_cmap_green[15] = sc->sc_cmap_green[255] = 0xff; 170 sc->sc_cmap_blue[15] = sc->sc_cmap_blue[255] = 0xff; 171 172 a.console = console; 173 a.scrdata = &ofb_screenlist; 174 a.accessops = &ofb_accessops; 175 a.accesscookie = sc; 176 177 config_found(self, &a, wsemuldisplaydevprint); 178 } 179 180 void 181 ofb_common_init(node, dc) 182 int node; 183 struct ofb_devconfig *dc; 184 { 185 struct rasops_info *ri = &dc->dc_ri; 186 int32_t addr, width, height, linebytes, depth; 187 188 if (dc->dc_ih == 0) { 189 char name[64]; 190 191 bzero(name, 64); 192 OF_package_to_path(node, name, sizeof(name)); 193 dc->dc_ih = OF_open(name); 194 } 195 196 /* XXX /chaos/control doesn't have "width", "height", ... */ 197 width = height = -1; 198 if (OF_getprop(node, "width", &width, 4) != 4) 199 OF_interpret("screen-width", 1, &width); 200 if (OF_getprop(node, "height", &height, 4) != 4) 201 OF_interpret("screen-height", 1, &height); 202 if (OF_getprop(node, "linebytes", &linebytes, 4) != 4) 203 linebytes = width; /* XXX */ 204 if (OF_getprop(node, "depth", &depth, 4) != 4) 205 depth = 8; /* XXX */ 206 if (OF_getprop(node, "address", &addr, 4) != 4) 207 OF_interpret("frame-buffer-adr", 1, &addr); 208 209 if (width == -1 || height == -1 || addr == 0 || addr == -1) 210 return; 211 212 dc->dc_paddr = addr; /* PA of the frame buffer */ 213 214 /* change 0xff/0xff/0xff to white */ 215 OF_call_method_1("color!", dc->dc_ih, 4, 255, 255, 255, 255); 216 217 /* initialize rasops */ 218 ri->ri_width = width; 219 ri->ri_height = height; 220 ri->ri_depth = depth; 221 ri->ri_stride = linebytes; 222 ri->ri_bits = (char *)addr; 223 ri->ri_flg = RI_FORCEMONO | RI_FULLCLEAR | RI_CENTER; 224 225 /* If screen is smaller than 1024x768, use small font. */ 226 if ((width < 1024 || height < 768) && copy_rom_font() == 0) { 227 int cols, rows; 228 229 OF_interpret("#lines", 1, &rows); 230 OF_interpret("#columns", 1, &cols); 231 232 ri->ri_font = &openfirm6x11; 233 ri->ri_wsfcookie = -1; /* not using wsfont */ 234 rasops_init(ri, rows, cols); 235 236 ri->ri_xorigin = 2; 237 ri->ri_yorigin = 3; 238 ri->ri_bits = (char *)addr + ri->ri_xorigin + 239 ri->ri_stride * ri->ri_yorigin; 240 } else 241 rasops_init(ri, height/22, (width/12) & ~7); /* XXX 12x22 */ 242 243 /* black on white */ 244 ri->ri_devcmap[0] = 0xffffffff; /* bg */ 245 ri->ri_devcmap[1] = 0; /* fg */ 246 247 ofb_stdscreen.nrows = ri->ri_rows; 248 ofb_stdscreen.ncols = ri->ri_cols; 249 ofb_stdscreen.textops = &ri->ri_ops; 250 ofb_stdscreen.capabilities = ri->ri_caps; 251 } 252 253 int 254 ofb_is_console() 255 { 256 int chosen, stdout, node; 257 char type[16]; 258 259 chosen = OF_finddevice("/chosen"); 260 OF_getprop(chosen, "stdout", &stdout, 4); 261 node = OF_instance_to_package(stdout); 262 OF_getprop(node, "device_type", type, sizeof(type)); 263 if (strcmp(type, "display") == 0) 264 return 1; 265 else 266 return 0; 267 } 268 269 int 270 ofb_ioctl(v, cmd, data, flag, p) 271 void *v; 272 u_long cmd; 273 caddr_t data; 274 int flag; 275 struct proc *p; 276 { 277 struct ofb_softc *sc = v; 278 struct ofb_devconfig *dc = sc->sc_dc; 279 struct wsdisplay_fbinfo *wdf; 280 struct grfinfo *gm; 281 282 switch (cmd) { 283 case WSDISPLAYIO_GTYPE: 284 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; /* XXX ? */ 285 return 0; 286 287 case WSDISPLAYIO_GINFO: 288 wdf = (void *)data; 289 wdf->height = dc->dc_ri.ri_height; 290 wdf->width = dc->dc_ri.ri_width; 291 wdf->depth = dc->dc_ri.ri_depth; 292 wdf->cmsize = 256; 293 return 0; 294 295 case WSDISPLAYIO_GETCMAP: 296 return ofb_getcmap(sc, (struct wsdisplay_cmap *)data); 297 298 case WSDISPLAYIO_PUTCMAP: 299 return ofb_putcmap(sc, (struct wsdisplay_cmap *)data); 300 301 /* XXX There are no way to know framebuffer pa from a user program. */ 302 case GRFIOCGINFO: 303 gm = (void *)data; 304 bzero(gm, sizeof(struct grfinfo)); 305 gm->gd_fbaddr = (caddr_t)dc->dc_paddr; 306 gm->gd_fbrowbytes = dc->dc_ri.ri_stride; 307 return 0; 308 } 309 return -1; 310 } 311 312 int 313 ofb_mmap(v, offset, prot) 314 void *v; 315 off_t offset; 316 int prot; 317 { 318 struct ofb_softc *sc = v; 319 struct ofb_devconfig *dc = sc->sc_dc; 320 struct rasops_info *ri = &dc->dc_ri; 321 322 if (offset >= (ri->ri_stride * ri->ri_height) || offset < 0) 323 return -1; 324 325 return dc->dc_paddr + offset; 326 } 327 328 int 329 ofb_alloc_screen(v, type, cookiep, curxp, curyp, attrp) 330 void *v; 331 const struct wsscreen_descr *type; 332 void **cookiep; 333 int *curxp, *curyp; 334 long *attrp; 335 { 336 struct ofb_softc *sc = v; 337 struct rasops_info *ri = &sc->sc_dc->dc_ri; 338 long defattr; 339 340 if (sc->nscreens > 0) 341 return (ENOMEM); 342 343 *cookiep = ri; /* one and only for now */ 344 *curxp = 0; 345 *curyp = 0; 346 (*ri->ri_ops.alloc_attr)(ri, 0, 0, 0, &defattr); 347 *attrp = defattr; 348 sc->nscreens++; 349 return 0; 350 } 351 352 void 353 ofb_free_screen(v, cookie) 354 void *v; 355 void *cookie; 356 { 357 struct ofb_softc *sc = v; 358 359 if (sc->sc_dc == &ofb_console_dc) 360 panic("ofb_free_screen: console"); 361 362 sc->nscreens--; 363 } 364 365 int 366 ofb_show_screen(v, cookie, waitok, cb, cbarg) 367 void *v; 368 void *cookie; 369 int waitok; 370 void (*cb) __P((void *, int, int)); 371 void *cbarg; 372 { 373 374 return (0); 375 } 376 377 int 378 ofb_cnattach() 379 { 380 struct ofb_devconfig *dc = &ofb_console_dc; 381 struct rasops_info *ri = &dc->dc_ri; 382 long defattr; 383 int crow = 0; 384 int chosen, stdout, node; 385 386 chosen = OF_finddevice("/chosen"); 387 OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)); 388 node = OF_instance_to_package(stdout); 389 dc->dc_ih = stdout; 390 391 /* get current cursor position */ 392 OF_interpret("line#", 1, &crow); 393 394 /* move (rom monitor) cursor to the lowest line - 1 */ 395 OF_interpret("#lines 2 - to line#", 0); 396 397 ofb_common_init(node, dc); 398 399 if (ri->ri_width >= 1024 && ri->ri_height >= 768) { 400 int i, screenbytes = ri->ri_stride * ri->ri_height; 401 402 for (i = 0; i < screenbytes; i += sizeof(u_int32_t)) 403 *(u_int32_t *)(dc->dc_paddr + i) = 0xffffffff; 404 crow = 0; 405 } 406 407 (*ri->ri_ops.alloc_attr)(ri, 0, 0, 0, &defattr); 408 wsdisplay_cnattach(&ofb_stdscreen, ri, 0, crow, defattr); 409 410 return 0; 411 } 412 413 int 414 copy_rom_font() 415 { 416 u_char *romfont; 417 int char_width, char_height; 418 int chosen, mmu, m, e; 419 420 /* Get ROM FONT address. */ 421 OF_interpret("font-adr", 1, &romfont); 422 if (romfont == NULL) 423 return -1; 424 425 chosen = OF_finddevice("/chosen"); 426 OF_getprop(chosen, "mmu", &mmu, 4); 427 428 /* 429 * Convert to physcal address. We cannot access to Open Firmware's 430 * virtual address space. 431 */ 432 OF_call_method("translate", mmu, 1, 3, romfont, &romfont, &m, &e); 433 434 /* Get character size */ 435 OF_interpret("char-width", 1, &char_width); 436 OF_interpret("char-height", 1, &char_height); 437 438 openfirm6x11.name = "Open Firmware"; 439 openfirm6x11.firstchar = 32; 440 openfirm6x11.numchars = 96; 441 openfirm6x11.encoding = WSDISPLAY_FONTENC_ISO; 442 openfirm6x11.fontwidth = char_width; 443 openfirm6x11.fontheight = char_height; 444 openfirm6x11.stride = 1; 445 openfirm6x11.bitorder = WSDISPLAY_FONTORDER_L2R; 446 openfirm6x11.byteorder = WSDISPLAY_FONTORDER_L2R; 447 openfirm6x11.data = romfont; 448 449 return 0; 450 } 451 452 int 453 ofb_getcmap(sc, cm) 454 struct ofb_softc *sc; 455 struct wsdisplay_cmap *cm; 456 { 457 u_int index = cm->index; 458 u_int count = cm->count; 459 int error; 460 461 if (index >= 256 || count > 256 || index + count > 256) 462 return EINVAL; 463 464 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 465 if (error) 466 return error; 467 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 468 if (error) 469 return error; 470 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 471 if (error) 472 return error; 473 474 return 0; 475 } 476 477 int 478 ofb_putcmap(sc, cm) 479 struct ofb_softc *sc; 480 struct wsdisplay_cmap *cm; 481 { 482 struct ofb_devconfig *dc = sc->sc_dc; 483 int index = cm->index; 484 int count = cm->count; 485 int i; 486 u_char *r, *g, *b; 487 488 if (cm->index >= 256 || cm->count > 256 || 489 (cm->index + cm->count) > 256) 490 return EINVAL; 491 if (!uvm_useracc(cm->red, cm->count, B_READ) || 492 !uvm_useracc(cm->green, cm->count, B_READ) || 493 !uvm_useracc(cm->blue, cm->count, B_READ)) 494 return EFAULT; 495 copyin(cm->red, &sc->sc_cmap_red[index], count); 496 copyin(cm->green, &sc->sc_cmap_green[index], count); 497 copyin(cm->blue, &sc->sc_cmap_blue[index], count); 498 499 r = &sc->sc_cmap_red[index]; 500 g = &sc->sc_cmap_green[index]; 501 b = &sc->sc_cmap_blue[index]; 502 503 for (i = 0; i < count; i++) { 504 OF_call_method_1("color!", dc->dc_ih, 4, *r, *g, *b, index); 505 r++, g++, b++, index++; 506 } 507 508 return 0; 509 } 510
Indexes created Mon Sep 29 03:10:08 GMT 2025