ofb.c revision 1.40
1 /* $NetBSD: ofb.c,v 1.40 2004/12/15 04:52:05 briggs 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/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: ofb.c,v 1.40 2004/12/15 04:52:05 briggs Exp $"); 32 33 #include <sys/param.h> 34 #include <sys/buf.h> 35 #include <sys/conf.h> 36 #include <sys/device.h> 37 #include <sys/ioctl.h> 38 #include <sys/kernel.h> 39 #include <sys/malloc.h> 40 #include <sys/systm.h> 41 42 #include <uvm/uvm_extern.h> 43 44 #include <dev/pci/pcidevs.h> 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pciio.h> 48 49 #include <dev/wscons/wsconsio.h> 50 #include <dev/wscons/wsdisplayvar.h> 51 #include <dev/rasops/rasops.h> 52 53 #include <dev/ofw/openfirm.h> 54 #include <dev/ofw/ofw_pci.h> 55 56 #include <machine/bus.h> 57 #include <machine/autoconf.h> 58 #include <machine/grfioctl.h> 59 60 #include <powerpc/oea/bat.h> 61 62 #include <macppc/dev/ofbvar.h> 63 64 #if OFB_ENABLE_CACHE 65 int ofb_enable_cache = 1; 66 #else 67 int ofb_enable_cache = 0; 68 #endif 69 70 int ofbmatch __P((struct device *, struct cfdata *, void *)); 71 void ofbattach __P((struct device *, struct device *, void *)); 72 int ofbprint __P((void *, const char *)); 73 74 CFATTACH_DECL(ofb, sizeof(struct ofb_softc), 75 ofbmatch, ofbattach, NULL, NULL); 76 77 struct ofb_devconfig ofb_console_dc; 78 79 struct wsscreen_descr ofb_stdscreen = { 80 "std", 81 0, 0, /* will be filled in -- XXX shouldn't, it's global */ 82 0, 83 0, 0, 84 WSSCREEN_REVERSE 85 }; 86 87 const struct wsscreen_descr *_ofb_scrlist[] = { 88 &ofb_stdscreen, 89 /* XXX other formats, graphics screen? */ 90 }; 91 92 struct wsscreen_list ofb_screenlist = { 93 sizeof(_ofb_scrlist) / sizeof(struct wsscreen_descr *), _ofb_scrlist 94 }; 95 96 static int ofb_ioctl __P((void *, u_long, caddr_t, int, struct proc *)); 97 static paddr_t ofb_mmap __P((void *, off_t, int)); 98 static int ofb_alloc_screen __P((void *, const struct wsscreen_descr *, 99 void **, int *, int *, long *)); 100 static void ofb_free_screen __P((void *, void *)); 101 static int ofb_show_screen __P((void *, void *, int, 102 void (*) (void *, int, int), void *)); 103 static int copy_rom_font __P((void)); 104 105 struct wsdisplay_accessops ofb_accessops = { 106 ofb_ioctl, 107 ofb_mmap, 108 ofb_alloc_screen, 109 ofb_free_screen, 110 ofb_show_screen, 111 0 /* load_font */ 112 }; 113 114 static struct wsdisplay_font openfirm6x11; 115 116 static void ofb_common_init __P((int, struct ofb_devconfig *)); 117 static int ofb_getcmap __P((struct ofb_softc *, struct wsdisplay_cmap *)); 118 static int ofb_putcmap __P((struct ofb_softc *, struct wsdisplay_cmap *)); 119 120 int 121 ofbmatch(parent, match, aux) 122 struct device *parent; 123 struct cfdata *match; 124 void *aux; 125 { 126 struct pci_attach_args *pa = aux; 127 128 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_APPLE && 129 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_CONTROL) 130 return 1; 131 132 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_DISPLAY) 133 return 1; 134 135 return 0; 136 } 137 138 void 139 ofbattach(parent, self, aux) 140 struct device *parent, *self; 141 void *aux; 142 { 143 struct ofb_softc *sc = (struct ofb_softc *)self; 144 struct pci_attach_args *pa = aux; 145 struct wsemuldisplaydev_attach_args a; 146 int console, node; 147 struct ofb_devconfig *dc; 148 char devinfo[256]; 149 150 console = ofb_is_console(); 151 152 if (console) { 153 dc = &ofb_console_dc; 154 node = dc->dc_node; 155 sc->nscreens = 1; 156 } else { 157 int len; 158 159 dc = malloc(sizeof(struct ofb_devconfig), M_DEVBUF, M_WAITOK); 160 memset(dc, 0, sizeof(struct ofb_devconfig)); 161 node = pcidev_to_ofdev(pa->pa_pc, pa->pa_tag); 162 if (node == 0) { 163 printf(": ofdev not found\n"); 164 return; 165 } 166 167 /* XXX There are two child screens on PowerBook. */ 168 memset(devinfo, 0, sizeof(devinfo)); 169 OF_getprop(node, "device_type", devinfo, sizeof(devinfo)); 170 len = strlen(devinfo); 171 if (strcmp(devinfo + len - 7, "-parent") == 0) 172 node = OF_child(node); 173 174 ofb_common_init(node, dc); 175 } 176 sc->sc_dc = dc; 177 178 sc->sc_pc = pa->pa_pc; 179 sc->sc_pcitag = pa->pa_tag; 180 181 /* XXX */ 182 if (OF_getprop(node, "assigned-addresses", sc->sc_addrs, 183 sizeof(sc->sc_addrs)) == -1) { 184 node = OF_parent(node); 185 OF_getprop(node, "assigned-addresses", sc->sc_addrs, 186 sizeof(sc->sc_addrs)); 187 } 188 189 if (dc->dc_paddr == 0) { 190 printf(": cannot map framebuffer\n"); 191 return; 192 } 193 194 /* 195 * Clear the screen here, instead of above, in case 196 * ofb_common_init() failed to map the framebuffer. 197 */ 198 if (!console) { 199 int i, screenbytes; 200 201 screenbytes = dc->dc_ri.ri_stride * dc->dc_ri.ri_height; 202 for (i = 0; i < screenbytes; i += sizeof(u_int32_t)) 203 *(u_int32_t *)(dc->dc_paddr + i) = 0xffffffff; 204 } 205 206 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 207 printf(": %s\n", devinfo); 208 printf("%s: %d x %d, %dbpp\n", self->dv_xname, 209 dc->dc_ri.ri_width, dc->dc_ri.ri_height, dc->dc_ri.ri_depth); 210 211 sc->sc_cmap_red[0] = sc->sc_cmap_green[0] = sc->sc_cmap_blue[0] = 0; 212 sc->sc_cmap_red[15] = sc->sc_cmap_red[255] = 0xff; 213 sc->sc_cmap_green[15] = sc->sc_cmap_green[255] = 0xff; 214 sc->sc_cmap_blue[15] = sc->sc_cmap_blue[255] = 0xff; 215 216 a.console = console; 217 a.scrdata = &ofb_screenlist; 218 a.accessops = &ofb_accessops; 219 a.accesscookie = sc; 220 221 config_found(self, &a, wsemuldisplaydevprint); 222 } 223 224 void 225 ofb_common_init(node, dc) 226 int node; 227 struct ofb_devconfig *dc; 228 { 229 struct rasops_info *ri = &dc->dc_ri; 230 int32_t addr, width, height, linebytes, depth; 231 232 dc->dc_node = node; 233 if (dc->dc_ih == 0) { 234 char name[64]; 235 236 memset(name, 0, 64); 237 OF_package_to_path(node, name, sizeof(name)); 238 239 /* 240 * /chaos/control on some boxes hangs up in OF_open. 241 * If we return here, we get "can't map frame buffer" 242 * which isn't really a big deal in these cases. 243 */ 244 if (!strncmp(name, "/chaos@F0000000/control@B", sizeof(name))) 245 return; 246 247 dc->dc_ih = OF_open(name); 248 } 249 250 /* XXX /chaos/control doesn't have "width", "height", ... */ 251 width = height = -1; 252 if (OF_getprop(node, "width", &width, 4) != 4) 253 OF_interpret("screen-width", 1, &width); 254 if (OF_getprop(node, "height", &height, 4) != 4) 255 OF_interpret("screen-height", 1, &height); 256 if (OF_getprop(node, "linebytes", &linebytes, 4) != 4) 257 linebytes = width; /* XXX */ 258 if (OF_getprop(node, "depth", &depth, 4) != 4) 259 depth = 8; /* XXX */ 260 if (OF_getprop(node, "address", &addr, 4) != 4) 261 OF_interpret("frame-buffer-adr", 1, &addr); 262 263 if (width == -1 || height == -1 || addr == 0 || addr == -1) 264 return; 265 266 dc->dc_paddr = addr; /* PA of the frame buffer */ 267 268 /* Make sure 0/0/0 is black and 255/255/255 is white. */ 269 OF_call_method_1("color!", dc->dc_ih, 4, 0, 0, 0, 0); 270 OF_call_method_1("color!", dc->dc_ih, 4, 255, 255, 255, 255); 271 272 /* Enable write-through cache. */ 273 if (ofb_enable_cache) { 274 vaddr_t va; 275 /* 276 * Let's try to find an empty BAT to use 277 */ 278 for (va = SEGMENT_LENGTH; va < (USER_SR << ADDR_SR_SHFT); 279 va += SEGMENT_LENGTH) { 280 if (battable[va >> ADDR_SR_SHFT].batu == 0) { 281 battable[va >> ADDR_SR_SHFT].batl = 282 BATL(addr & 0xf0000000, 283 BAT_G | BAT_W | BAT_M, BAT_PP_RW); 284 battable[va >> ADDR_SR_SHFT].batu = 285 BATL(va, BAT_BL_256M, BAT_Vs); 286 addr &= 0x0fffffff; 287 addr |= va; 288 break; 289 } 290 } 291 } 292 293 /* initialize rasops */ 294 ri->ri_width = width; 295 ri->ri_height = height; 296 ri->ri_depth = depth; 297 ri->ri_stride = linebytes; 298 ri->ri_bits = (char *)addr; 299 ri->ri_flg = RI_FORCEMONO | RI_FULLCLEAR | RI_CENTER; 300 301 /* If screen is smaller than 1024x768, use small font. */ 302 if ((width < 1024 || height < 768) && copy_rom_font() == 0) { 303 int cols, rows; 304 305 OF_interpret("#lines", 1, &rows); 306 OF_interpret("#columns", 1, &cols); 307 308 ri->ri_font = &openfirm6x11; 309 ri->ri_wsfcookie = -1; /* not using wsfont */ 310 rasops_init(ri, rows, cols); 311 312 ri->ri_xorigin = 2; 313 ri->ri_yorigin = 3; 314 ri->ri_bits = (char *)addr + ri->ri_xorigin + 315 ri->ri_stride * ri->ri_yorigin; 316 } else { 317 rasops_init(ri, 24, 80); 318 rasops_reconfig(ri, (height - 2) / ri->ri_font->fontheight, 319 ((width - 2) / ri->ri_font->fontwidth) & ~7); 320 } 321 322 /* black on white */ 323 ri->ri_devcmap[0] = 0xffffffff; /* bg */ 324 ri->ri_devcmap[1] = 0; /* fg */ 325 326 ofb_stdscreen.nrows = ri->ri_rows; 327 ofb_stdscreen.ncols = ri->ri_cols; 328 ofb_stdscreen.textops = &ri->ri_ops; 329 ofb_stdscreen.capabilities = ri->ri_caps; 330 } 331 332 int 333 ofb_is_console() 334 { 335 int chosen, stdout, node; 336 char type[16]; 337 338 chosen = OF_finddevice("/chosen"); 339 OF_getprop(chosen, "stdout", &stdout, 4); 340 node = OF_instance_to_package(stdout); 341 OF_getprop(node, "device_type", type, sizeof(type)); 342 if (strcmp(type, "display") == 0) 343 return 1; 344 else 345 return 0; 346 } 347 348 int 349 ofb_ioctl(v, cmd, data, flag, p) 350 void *v; 351 u_long cmd; 352 caddr_t data; 353 int flag; 354 struct proc *p; 355 { 356 struct ofb_softc *sc = v; 357 struct ofb_devconfig *dc = sc->sc_dc; 358 struct wsdisplay_fbinfo *wdf; 359 struct grfinfo *gm; 360 361 switch (cmd) { 362 case WSDISPLAYIO_GTYPE: 363 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; /* XXX ? */ 364 return 0; 365 366 case WSDISPLAYIO_GINFO: 367 wdf = (void *)data; 368 wdf->height = dc->dc_ri.ri_height; 369 wdf->width = dc->dc_ri.ri_width; 370 wdf->depth = dc->dc_ri.ri_depth; 371 wdf->cmsize = 256; 372 return 0; 373 374 case WSDISPLAYIO_GETCMAP: 375 return ofb_getcmap(sc, (struct wsdisplay_cmap *)data); 376 377 case WSDISPLAYIO_PUTCMAP: 378 return ofb_putcmap(sc, (struct wsdisplay_cmap *)data); 379 380 /* XXX There are no way to know framebuffer pa from a user program. */ 381 case GRFIOCGINFO: 382 gm = (void *)data; 383 memset(gm, 0, sizeof(struct grfinfo)); 384 gm->gd_fbaddr = (caddr_t)dc->dc_paddr; 385 gm->gd_fbrowbytes = dc->dc_ri.ri_stride; 386 return 0; 387 /* PCI config read/write passthrough. */ 388 case PCI_IOC_CFGREAD: 389 case PCI_IOC_CFGWRITE: 390 return (pci_devioctl(sc->sc_pc, sc->sc_pcitag, 391 cmd, data, flag, p)); 392 } 393 return EPASSTHROUGH; 394 } 395 396 paddr_t 397 ofb_mmap(v, offset, prot) 398 void *v; 399 off_t offset; 400 int prot; 401 { 402 struct ofb_softc *sc = v; 403 struct ofb_devconfig *dc = sc->sc_dc; 404 struct rasops_info *ri = &dc->dc_ri; 405 u_int32_t *ap = sc->sc_addrs; 406 paddr_t pa; 407 int i; 408 409 if (offset >=0 && offset < (ri->ri_stride * ri->ri_height)) 410 return dc->dc_paddr + offset; 411 412 pa = offset; 413 for (i = 0; i < 6; i++) { 414 switch (ap[0] & OFW_PCI_PHYS_HI_SPACEMASK) { 415 case OFW_PCI_PHYS_HI_SPACE_MEM32: 416 if (pa >= ap[2] && pa < ap[2] + ap[4]) 417 return pa; 418 /* XXX I/O space? */ 419 } 420 ap += 5; 421 } 422 423 return -1; 424 } 425 426 int 427 ofb_alloc_screen(v, type, cookiep, curxp, curyp, attrp) 428 void *v; 429 const struct wsscreen_descr *type; 430 void **cookiep; 431 int *curxp, *curyp; 432 long *attrp; 433 { 434 struct ofb_softc *sc = v; 435 struct rasops_info *ri = &sc->sc_dc->dc_ri; 436 long defattr; 437 438 if (sc->nscreens > 0) 439 return (ENOMEM); 440 441 *cookiep = ri; /* one and only for now */ 442 *curxp = 0; 443 *curyp = 0; 444 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 445 *attrp = defattr; 446 sc->nscreens++; 447 return 0; 448 } 449 450 void 451 ofb_free_screen(v, cookie) 452 void *v; 453 void *cookie; 454 { 455 struct ofb_softc *sc = v; 456 457 if (sc->sc_dc == &ofb_console_dc) 458 panic("ofb_free_screen: console"); 459 460 sc->nscreens--; 461 } 462 463 int 464 ofb_show_screen(v, cookie, waitok, cb, cbarg) 465 void *v; 466 void *cookie; 467 int waitok; 468 void (*cb) __P((void *, int, int)); 469 void *cbarg; 470 { 471 472 return (0); 473 } 474 475 int 476 ofb_cnattach() 477 { 478 struct ofb_devconfig *dc = &ofb_console_dc; 479 struct rasops_info *ri = &dc->dc_ri; 480 long defattr; 481 int crow = 0; 482 int chosen, stdout, node; 483 484 chosen = OF_finddevice("/chosen"); 485 OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)); 486 node = OF_instance_to_package(stdout); 487 dc->dc_ih = stdout; 488 489 /* get current cursor position */ 490 OF_interpret("line#", 1, &crow); 491 492 /* move (rom monitor) cursor to the lowest line - 1 */ 493 OF_interpret("#lines 2 - to line#", 0); 494 495 ofb_common_init(node, dc); 496 497 if (ri->ri_width >= 1024 && ri->ri_height >= 768) { 498 int i, screenbytes = ri->ri_stride * ri->ri_height; 499 500 for (i = 0; i < screenbytes; i += sizeof(u_int32_t)) 501 *(u_int32_t *)(dc->dc_paddr + i) = 0xffffffff; 502 crow = 0; 503 } 504 505 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 506 wsdisplay_cnattach(&ofb_stdscreen, ri, 0, crow, defattr); 507 508 return 0; 509 } 510 511 int 512 copy_rom_font() 513 { 514 u_char *romfont; 515 int char_width, char_height; 516 int chosen, mmu, m, e; 517 518 /* Get ROM FONT address. */ 519 OF_interpret("font-adr", 1, &romfont); 520 if (romfont == NULL) 521 return -1; 522 523 chosen = OF_finddevice("/chosen"); 524 OF_getprop(chosen, "mmu", &mmu, 4); 525 526 /* 527 * Convert to physcal address. We cannot access to Open Firmware's 528 * virtual address space. 529 */ 530 OF_call_method("translate", mmu, 1, 3, romfont, &romfont, &m, &e); 531 532 /* Get character size */ 533 OF_interpret("char-width", 1, &char_width); 534 OF_interpret("char-height", 1, &char_height); 535 536 openfirm6x11.name = "Open Firmware"; 537 openfirm6x11.firstchar = 32; 538 openfirm6x11.numchars = 96; 539 openfirm6x11.encoding = WSDISPLAY_FONTENC_ISO; 540 openfirm6x11.fontwidth = char_width; 541 openfirm6x11.fontheight = char_height; 542 openfirm6x11.stride = 1; 543 openfirm6x11.bitorder = WSDISPLAY_FONTORDER_L2R; 544 openfirm6x11.byteorder = WSDISPLAY_FONTORDER_L2R; 545 openfirm6x11.data = romfont; 546 547 return 0; 548 } 549 550 int 551 ofb_getcmap(sc, cm) 552 struct ofb_softc *sc; 553 struct wsdisplay_cmap *cm; 554 { 555 u_int index = cm->index; 556 u_int count = cm->count; 557 int error; 558 559 if (index >= 256 || count > 256 || index + count > 256) 560 return EINVAL; 561 562 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 563 if (error) 564 return error; 565 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 566 if (error) 567 return error; 568 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 569 if (error) 570 return error; 571 572 return 0; 573 } 574 575 int 576 ofb_putcmap(sc, cm) 577 struct ofb_softc *sc; 578 struct wsdisplay_cmap *cm; 579 { 580 struct ofb_devconfig *dc = sc->sc_dc; 581 u_int index = cm->index; 582 u_int count = cm->count; 583 int i, error; 584 u_char rbuf[256], gbuf[256], bbuf[256]; 585 u_char *r, *g, *b; 586 587 if (cm->index >= 256 || cm->count > 256 || 588 (cm->index + cm->count) > 256) 589 return EINVAL; 590 error = copyin(cm->red, &rbuf[index], count); 591 if (error) 592 return error; 593 error = copyin(cm->green, &gbuf[index], count); 594 if (error) 595 return error; 596 error = copyin(cm->blue, &bbuf[index], count); 597 if (error) 598 return error; 599 600 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 601 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 602 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 603 604 r = &sc->sc_cmap_red[index]; 605 g = &sc->sc_cmap_green[index]; 606 b = &sc->sc_cmap_blue[index]; 607 for (i = 0; i < count; i++) { 608 OF_call_method_1("color!", dc->dc_ih, 4, *r, *g, *b, index); 609 r++, g++, b++, index++; 610 } 611 return 0; 612 } 613
Indexes created Tue Sep 30 07:10:03 GMT 2025