ofb.c revision 1.37
1 /* $NetBSD: ofb.c,v 1.37 2003/10/20 00:12:10 matt 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 1.37 2003/10/20 00:12:10 matt 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 i, len, screenbytes; 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 screenbytes = dc->dc_ri.ri_stride * dc->dc_ri.ri_height; 177 for (i = 0; i < screenbytes; i += sizeof(u_int32_t)) 178 *(u_int32_t *)(dc->dc_paddr + i) = 0xffffffff; 179 } 180 sc->sc_dc = dc; 181 182 sc->sc_pc = pa->pa_pc; 183 sc->sc_pcitag = pa->pa_tag; 184 185 /* XXX */ 186 if (OF_getprop(node, "assigned-addresses", sc->sc_addrs, 187 sizeof(sc->sc_addrs)) == -1) { 188 node = OF_parent(node); 189 OF_getprop(node, "assigned-addresses", sc->sc_addrs, 190 sizeof(sc->sc_addrs)); 191 } 192 193 if (dc->dc_paddr == 0) { 194 printf(": cannot map framebuffer\n"); 195 return; 196 } 197 198 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 199 printf(": %s\n", devinfo); 200 printf("%s: %d x %d, %dbpp\n", self->dv_xname, 201 dc->dc_ri.ri_width, dc->dc_ri.ri_height, dc->dc_ri.ri_depth); 202 203 sc->sc_cmap_red[0] = sc->sc_cmap_green[0] = sc->sc_cmap_blue[0] = 0; 204 sc->sc_cmap_red[15] = sc->sc_cmap_red[255] = 0xff; 205 sc->sc_cmap_green[15] = sc->sc_cmap_green[255] = 0xff; 206 sc->sc_cmap_blue[15] = sc->sc_cmap_blue[255] = 0xff; 207 208 a.console = console; 209 a.scrdata = &ofb_screenlist; 210 a.accessops = &ofb_accessops; 211 a.accesscookie = sc; 212 213 config_found(self, &a, wsemuldisplaydevprint); 214 } 215 216 void 217 ofb_common_init(node, dc) 218 int node; 219 struct ofb_devconfig *dc; 220 { 221 struct rasops_info *ri = &dc->dc_ri; 222 int32_t addr, width, height, linebytes, depth; 223 224 dc->dc_node = node; 225 if (dc->dc_ih == 0) { 226 char name[64]; 227 228 memset(name, 0, 64); 229 OF_package_to_path(node, name, sizeof(name)); 230 dc->dc_ih = OF_open(name); 231 } 232 233 /* XXX /chaos/control doesn't have "width", "height", ... */ 234 width = height = -1; 235 if (OF_getprop(node, "width", &width, 4) != 4) 236 OF_interpret("screen-width", 1, &width); 237 if (OF_getprop(node, "height", &height, 4) != 4) 238 OF_interpret("screen-height", 1, &height); 239 if (OF_getprop(node, "linebytes", &linebytes, 4) != 4) 240 linebytes = width; /* XXX */ 241 if (OF_getprop(node, "depth", &depth, 4) != 4) 242 depth = 8; /* XXX */ 243 if (OF_getprop(node, "address", &addr, 4) != 4) 244 OF_interpret("frame-buffer-adr", 1, &addr); 245 246 if (width == -1 || height == -1 || addr == 0 || addr == -1) 247 return; 248 249 dc->dc_paddr = addr; /* PA of the frame buffer */ 250 251 /* Make sure 0/0/0 is black and 255/255/255 is white. */ 252 OF_call_method_1("color!", dc->dc_ih, 4, 0, 0, 0, 0); 253 OF_call_method_1("color!", dc->dc_ih, 4, 255, 255, 255, 255); 254 255 /* Enable write-through cache. */ 256 if (ofb_enable_cache) { 257 vaddr_t va; 258 /* 259 * Let's try to find an empty BAT to use 260 */ 261 for (va = SEGMENT_LENGTH; va < (USER_SR << ADDR_SR_SHFT); 262 va += SEGMENT_LENGTH) { 263 if (battable[va >> ADDR_SR_SHFT].batu == 0) { 264 battable[va >> ADDR_SR_SHFT].batl = 265 BATL(addr & 0xf0000000, 266 BAT_G | BAT_W | BAT_M, BAT_PP_RW); 267 battable[va >> ADDR_SR_SHFT].batu = 268 BATL(va, BAT_BL_256M, BAT_Vs); 269 addr &= 0x0fffffff; 270 addr |= va; 271 break; 272 } 273 } 274 } 275 276 /* initialize rasops */ 277 ri->ri_width = width; 278 ri->ri_height = height; 279 ri->ri_depth = depth; 280 ri->ri_stride = linebytes; 281 ri->ri_bits = (char *)addr; 282 ri->ri_flg = RI_FORCEMONO | RI_FULLCLEAR | RI_CENTER; 283 284 /* If screen is smaller than 1024x768, use small font. */ 285 if ((width < 1024 || height < 768) && copy_rom_font() == 0) { 286 int cols, rows; 287 288 OF_interpret("#lines", 1, &rows); 289 OF_interpret("#columns", 1, &cols); 290 291 ri->ri_font = &openfirm6x11; 292 ri->ri_wsfcookie = -1; /* not using wsfont */ 293 rasops_init(ri, rows, cols); 294 295 ri->ri_xorigin = 2; 296 ri->ri_yorigin = 3; 297 ri->ri_bits = (char *)addr + ri->ri_xorigin + 298 ri->ri_stride * ri->ri_yorigin; 299 } else { 300 rasops_init(ri, 24, 80); 301 rasops_reconfig(ri, (height - 2) / ri->ri_font->fontheight, 302 ((width - 2) / ri->ri_font->fontwidth) & ~7); 303 } 304 305 /* black on white */ 306 ri->ri_devcmap[0] = 0xffffffff; /* bg */ 307 ri->ri_devcmap[1] = 0; /* fg */ 308 309 ofb_stdscreen.nrows = ri->ri_rows; 310 ofb_stdscreen.ncols = ri->ri_cols; 311 ofb_stdscreen.textops = &ri->ri_ops; 312 ofb_stdscreen.capabilities = ri->ri_caps; 313 } 314 315 int 316 ofb_is_console() 317 { 318 int chosen, stdout, node; 319 char type[16]; 320 321 chosen = OF_finddevice("/chosen"); 322 OF_getprop(chosen, "stdout", &stdout, 4); 323 node = OF_instance_to_package(stdout); 324 OF_getprop(node, "device_type", type, sizeof(type)); 325 if (strcmp(type, "display") == 0) 326 return 1; 327 else 328 return 0; 329 } 330 331 int 332 ofb_ioctl(v, cmd, data, flag, p) 333 void *v; 334 u_long cmd; 335 caddr_t data; 336 int flag; 337 struct proc *p; 338 { 339 struct ofb_softc *sc = v; 340 struct ofb_devconfig *dc = sc->sc_dc; 341 struct wsdisplay_fbinfo *wdf; 342 struct grfinfo *gm; 343 344 switch (cmd) { 345 case WSDISPLAYIO_GTYPE: 346 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; /* XXX ? */ 347 return 0; 348 349 case WSDISPLAYIO_GINFO: 350 wdf = (void *)data; 351 wdf->height = dc->dc_ri.ri_height; 352 wdf->width = dc->dc_ri.ri_width; 353 wdf->depth = dc->dc_ri.ri_depth; 354 wdf->cmsize = 256; 355 return 0; 356 357 case WSDISPLAYIO_GETCMAP: 358 return ofb_getcmap(sc, (struct wsdisplay_cmap *)data); 359 360 case WSDISPLAYIO_PUTCMAP: 361 return ofb_putcmap(sc, (struct wsdisplay_cmap *)data); 362 363 /* XXX There are no way to know framebuffer pa from a user program. */ 364 case GRFIOCGINFO: 365 gm = (void *)data; 366 memset(gm, 0, sizeof(struct grfinfo)); 367 gm->gd_fbaddr = (caddr_t)dc->dc_paddr; 368 gm->gd_fbrowbytes = dc->dc_ri.ri_stride; 369 return 0; 370 /* PCI config read/write passthrough. */ 371 case PCI_IOC_CFGREAD: 372 case PCI_IOC_CFGWRITE: 373 return (pci_devioctl(sc->sc_pc, sc->sc_pcitag, 374 cmd, data, flag, p)); 375 } 376 return EPASSTHROUGH; 377 } 378 379 paddr_t 380 ofb_mmap(v, offset, prot) 381 void *v; 382 off_t offset; 383 int prot; 384 { 385 struct ofb_softc *sc = v; 386 struct ofb_devconfig *dc = sc->sc_dc; 387 struct rasops_info *ri = &dc->dc_ri; 388 u_int32_t *ap = sc->sc_addrs; 389 paddr_t pa; 390 int i; 391 392 if (offset >=0 && offset < (ri->ri_stride * ri->ri_height)) 393 return dc->dc_paddr + offset; 394 395 pa = offset; 396 for (i = 0; i < 6; i++) { 397 switch (ap[0] & OFW_PCI_PHYS_HI_SPACEMASK) { 398 case OFW_PCI_PHYS_HI_SPACE_MEM32: 399 if (pa >= ap[2] && pa < ap[2] + ap[4]) 400 return pa; 401 /* XXX I/O space? */ 402 } 403 ap += 5; 404 } 405 406 return -1; 407 } 408 409 int 410 ofb_alloc_screen(v, type, cookiep, curxp, curyp, attrp) 411 void *v; 412 const struct wsscreen_descr *type; 413 void **cookiep; 414 int *curxp, *curyp; 415 long *attrp; 416 { 417 struct ofb_softc *sc = v; 418 struct rasops_info *ri = &sc->sc_dc->dc_ri; 419 long defattr; 420 421 if (sc->nscreens > 0) 422 return (ENOMEM); 423 424 *cookiep = ri; /* one and only for now */ 425 *curxp = 0; 426 *curyp = 0; 427 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 428 *attrp = defattr; 429 sc->nscreens++; 430 return 0; 431 } 432 433 void 434 ofb_free_screen(v, cookie) 435 void *v; 436 void *cookie; 437 { 438 struct ofb_softc *sc = v; 439 440 if (sc->sc_dc == &ofb_console_dc) 441 panic("ofb_free_screen: console"); 442 443 sc->nscreens--; 444 } 445 446 int 447 ofb_show_screen(v, cookie, waitok, cb, cbarg) 448 void *v; 449 void *cookie; 450 int waitok; 451 void (*cb) __P((void *, int, int)); 452 void *cbarg; 453 { 454 455 return (0); 456 } 457 458 int 459 ofb_cnattach() 460 { 461 struct ofb_devconfig *dc = &ofb_console_dc; 462 struct rasops_info *ri = &dc->dc_ri; 463 long defattr; 464 int crow = 0; 465 int chosen, stdout, node; 466 467 chosen = OF_finddevice("/chosen"); 468 OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)); 469 node = OF_instance_to_package(stdout); 470 dc->dc_ih = stdout; 471 472 /* get current cursor position */ 473 OF_interpret("line#", 1, &crow); 474 475 /* move (rom monitor) cursor to the lowest line - 1 */ 476 OF_interpret("#lines 2 - to line#", 0); 477 478 ofb_common_init(node, dc); 479 480 if (ri->ri_width >= 1024 && ri->ri_height >= 768) { 481 int i, screenbytes = ri->ri_stride * ri->ri_height; 482 483 for (i = 0; i < screenbytes; i += sizeof(u_int32_t)) 484 *(u_int32_t *)(dc->dc_paddr + i) = 0xffffffff; 485 crow = 0; 486 } 487 488 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 489 wsdisplay_cnattach(&ofb_stdscreen, ri, 0, crow, defattr); 490 491 return 0; 492 } 493 494 int 495 copy_rom_font() 496 { 497 u_char *romfont; 498 int char_width, char_height; 499 int chosen, mmu, m, e; 500 501 /* Get ROM FONT address. */ 502 OF_interpret("font-adr", 1, &romfont); 503 if (romfont == NULL) 504 return -1; 505 506 chosen = OF_finddevice("/chosen"); 507 OF_getprop(chosen, "mmu", &mmu, 4); 508 509 /* 510 * Convert to physcal address. We cannot access to Open Firmware's 511 * virtual address space. 512 */ 513 OF_call_method("translate", mmu, 1, 3, romfont, &romfont, &m, &e); 514 515 /* Get character size */ 516 OF_interpret("char-width", 1, &char_width); 517 OF_interpret("char-height", 1, &char_height); 518 519 openfirm6x11.name = "Open Firmware"; 520 openfirm6x11.firstchar = 32; 521 openfirm6x11.numchars = 96; 522 openfirm6x11.encoding = WSDISPLAY_FONTENC_ISO; 523 openfirm6x11.fontwidth = char_width; 524 openfirm6x11.fontheight = char_height; 525 openfirm6x11.stride = 1; 526 openfirm6x11.bitorder = WSDISPLAY_FONTORDER_L2R; 527 openfirm6x11.byteorder = WSDISPLAY_FONTORDER_L2R; 528 openfirm6x11.data = romfont; 529 530 return 0; 531 } 532 533 int 534 ofb_getcmap(sc, cm) 535 struct ofb_softc *sc; 536 struct wsdisplay_cmap *cm; 537 { 538 u_int index = cm->index; 539 u_int count = cm->count; 540 int error; 541 542 if (index >= 256 || count > 256 || index + count > 256) 543 return EINVAL; 544 545 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 546 if (error) 547 return error; 548 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 549 if (error) 550 return error; 551 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 552 if (error) 553 return error; 554 555 return 0; 556 } 557 558 int 559 ofb_putcmap(sc, cm) 560 struct ofb_softc *sc; 561 struct wsdisplay_cmap *cm; 562 { 563 struct ofb_devconfig *dc = sc->sc_dc; 564 u_int index = cm->index; 565 u_int count = cm->count; 566 int i; 567 u_char *r, *g, *b; 568 569 if (cm->index >= 256 || cm->count > 256 || 570 (cm->index + cm->count) > 256) 571 return EINVAL; 572 if (!uvm_useracc(cm->red, cm->count, B_READ) || 573 !uvm_useracc(cm->green, cm->count, B_READ) || 574 !uvm_useracc(cm->blue, cm->count, B_READ)) 575 return EFAULT; 576 copyin(cm->red, &sc->sc_cmap_red[index], count); 577 copyin(cm->green, &sc->sc_cmap_green[index], count); 578 copyin(cm->blue, &sc->sc_cmap_blue[index], count); 579 580 r = &sc->sc_cmap_red[index]; 581 g = &sc->sc_cmap_green[index]; 582 b = &sc->sc_cmap_blue[index]; 583 584 for (i = 0; i < count; i++) { 585 OF_call_method_1("color!", dc->dc_ih, 4, *r, *g, *b, index); 586 r++, g++, b++, index++; 587 } 588 589 return 0; 590 } 591
Indexes created Mon Sep 29 13:09:55 GMT 2025