1 /* $NetBSD: voodoofb.c,v 1.54 2021/04/24 23:36:57 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2005, 2006, 2012 Michael Lorenz 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* 29 * A console driver for 3Dfx Voodoo3 graphics boards 30 * Thanks to Andreas Drewke (andreas_dr@gmx.de) for his Voodoo3 driver for BeOS 31 * which I used as reference / documentation 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: voodoofb.c,v 1.54 2021/04/24 23:36:57 thorpej Exp $"); 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/device.h> 41 #include <sys/malloc.h> 42 #include <sys/callout.h> 43 #include <sys/kauth.h> 44 45 #include <dev/pci/pcivar.h> 46 #include <dev/pci/pcireg.h> 47 #include <dev/pci/pcidevs.h> 48 #include <dev/pci/pciio.h> 49 #include <dev/pci/voodoofbreg.h> 50 51 #include <dev/wscons/wsdisplayvar.h> 52 #include <dev/wscons/wsconsio.h> 53 #include <dev/wsfont/wsfont.h> 54 #include <dev/rasops/rasops.h> 55 #include <dev/wscons/wsdisplay_vconsvar.h> 56 #include <dev/pci/wsdisplay_pci.h> 57 58 #include <dev/i2c/i2cvar.h> 59 #include <dev/i2c/i2c_bitbang.h> 60 #include <dev/i2c/ddcvar.h> 61 #include <dev/videomode/videomode.h> 62 #include <dev/videomode/edidvar.h> 63 #include <dev/videomode/edidreg.h> 64 65 #include "opt_wsemul.h" 66 67 struct voodoofb_softc { 68 device_t sc_dev; 69 pci_chipset_tag_t sc_pc; 70 pcitag_t sc_pcitag; 71 struct pci_attach_args sc_pa; 72 73 bus_space_tag_t sc_memt; 74 bus_space_tag_t sc_iot; 75 bus_space_handle_t sc_memh; 76 77 bus_space_tag_t sc_regt; 78 bus_space_tag_t sc_ioregt; 79 bus_space_handle_t sc_regh; 80 bus_space_handle_t sc_ioregh; 81 bus_addr_t sc_regs, sc_fb, sc_ioreg; 82 bus_size_t sc_regsize, sc_fbsize, sc_ioregsize; 83 84 void *sc_ih; 85 86 #define MAX_CLOCK_VB 270000 /* Voodoo Banshee */ 87 #define MAX_CLOCK_V3 300000 /* Voodoo3 */ 88 #define MAX_CLOCK_V45 350000 /* Voodoo4/5 (not yet) */ 89 uint32_t sc_max_clock; 90 91 size_t sc_memsize; 92 int sc_memtype; 93 94 int sc_bits_per_pixel; 95 int sc_width, sc_height, sc_linebytes; 96 const struct videomode *sc_videomode; 97 int sc_is_mapped; 98 99 /* glyph cache */ 100 long sc_defattr, sc_kernattr; 101 uint32_t sc_glyphs_defattr[256]; 102 uint32_t sc_glyphs_kernattr[256]; 103 int sc_numglyphs, sc_usedglyphs; 104 uint32_t sc_cache; /* offset where cache starts */ 105 uint32_t sc_fmt; /* *fmt register */ 106 void *sc_font; 107 108 /* i2c stuff */ 109 struct i2c_controller sc_i2c; 110 uint8_t sc_edid_data[128]; 111 struct edid_info sc_edid_info; 112 uint32_t sc_i2creg; 113 114 int sc_mode; 115 uint32_t sc_bg; 116 117 u_char sc_cmap_red[256]; 118 u_char sc_cmap_green[256]; 119 u_char sc_cmap_blue[256]; 120 int sc_dacw; 121 122 struct vcons_data vd; 123 }; 124 125 struct voodoo_regs { 126 uint8_t vr_crtc[31]; 127 uint8_t vr_graph[9]; 128 uint8_t vr_attr[21]; 129 uint8_t vr_seq[5]; 130 }; 131 132 static struct vcons_screen voodoofb_console_screen; 133 134 static int voodoofb_match(device_t, cfdata_t, void *); 135 static void voodoofb_attach(device_t, device_t, void *); 136 137 static int voodoofb_drm_print(void *, const char *); 138 static int voodoofb_drm_unmap(struct voodoofb_softc *); 139 static int voodoofb_drm_map(struct voodoofb_softc *); 140 141 CFATTACH_DECL_NEW(voodoofb, sizeof(struct voodoofb_softc), voodoofb_match, 142 voodoofb_attach, NULL, NULL); 143 144 static bool voodoofb_is_console(struct voodoofb_softc *); 145 static void voodoofb_init(struct voodoofb_softc *); 146 147 static void voodoofb_cursor(void *, int, int, int); 148 static void voodoofb_putchar(void *, int, int, u_int, long); 149 static void voodoofb_putchar_aa(void *, int, int, u_int, long); 150 static void voodoofb_copycols(void *, int, int, int, int); 151 static void voodoofb_erasecols(void *, int, int, int, long); 152 static void voodoofb_copyrows(void *, int, int, int); 153 static void voodoofb_eraserows(void *, int, int, long); 154 155 #if 0 156 static int voodoofb_allocattr(void *, int, int, int, long *); 157 static void voodoofb_scroll(void *, void *, int); 158 static int voodoofb_load_font(void *, void *, struct wsdisplay_font *); 159 #endif 160 161 static int voodoofb_putcmap(struct voodoofb_softc *, 162 struct wsdisplay_cmap *); 163 static int voodoofb_getcmap(struct voodoofb_softc *, 164 struct wsdisplay_cmap *); 165 static int voodoofb_putpalreg(struct voodoofb_softc *, uint8_t, uint8_t, 166 uint8_t, uint8_t); 167 static void voodoofb_bitblt(struct voodoofb_softc *, int, int, int, int, 168 int, int); 169 static void voodoofb_rectfill(struct voodoofb_softc *, int, int, int, int, 170 int); 171 static void voodoofb_rectinvert(struct voodoofb_softc *, int, int, int, 172 int); 173 static void voodoofb_setup_mono(struct voodoofb_softc *, int, int, int, 174 int, uint32_t, uint32_t); 175 static void voodoofb_feed_line(struct voodoofb_softc *, int, uint8_t *); 176 177 static void voodoofb_wait_idle(struct voodoofb_softc *); 178 static void voodoofb_init_glyphcache(struct voodoofb_softc *, 179 struct rasops_info *); 180 181 #ifdef VOODOOFB_ENABLE_INTR 182 static int voodoofb_intr(void *); 183 #endif 184 185 static void voodoofb_set_videomode(struct voodoofb_softc *, 186 const struct videomode *); 187 188 struct wsscreen_descr voodoofb_defaultscreen = { 189 "default", 190 0, 0, 191 NULL, 192 8, 16, 193 WSSCREEN_WSCOLORS | WSSCREEN_HILIT, 194 NULL, 195 }; 196 197 const struct wsscreen_descr *_voodoofb_scrlist[] = { 198 &voodoofb_defaultscreen, 199 /* XXX other formats, graphics screen? */ 200 }; 201 202 struct wsscreen_list voodoofb_screenlist = { 203 sizeof(_voodoofb_scrlist) / sizeof(struct wsscreen_descr *), _voodoofb_scrlist 204 }; 205 206 static int voodoofb_ioctl(void *, void *, u_long, void *, int, 207 struct lwp *); 208 static paddr_t voodoofb_mmap(void *, void *, off_t, int); 209 210 static void voodoofb_clearscreen(struct voodoofb_softc *); 211 static void voodoofb_init_screen(void *, struct vcons_screen *, int, 212 long *); 213 214 215 struct wsdisplay_accessops voodoofb_accessops = { 216 voodoofb_ioctl, 217 voodoofb_mmap, 218 NULL, 219 NULL, 220 NULL, 221 NULL, /* load_font */ 222 NULL, /* polls */ 223 NULL, /* scroll */ 224 }; 225 226 /* I2C glue */ 227 static int voodoofb_i2c_send_start(void *, int); 228 static int voodoofb_i2c_send_stop(void *, int); 229 static int voodoofb_i2c_initiate_xfer(void *, i2c_addr_t, int); 230 static int voodoofb_i2c_read_byte(void *, uint8_t *, int); 231 static int voodoofb_i2c_write_byte(void *, uint8_t, int); 232 233 /* I2C bitbang glue */ 234 static void voodoofb_i2cbb_set_bits(void *, uint32_t); 235 static void voodoofb_i2cbb_set_dir(void *, uint32_t); 236 static uint32_t voodoofb_i2cbb_read(void *); 237 238 static void voodoofb_setup_i2c(struct voodoofb_softc *); 239 240 static const struct i2c_bitbang_ops voodoofb_i2cbb_ops = { 241 voodoofb_i2cbb_set_bits, 242 voodoofb_i2cbb_set_dir, 243 voodoofb_i2cbb_read, 244 { 245 VSP_SDA0_IN, 246 VSP_SCL0_IN, 247 0, 248 0 249 } 250 }; 251 252 extern const u_char rasops_cmap[768]; 253 254 /* 255 * Inline functions for getting access to register aperture. 256 */ 257 static inline void 258 voodoo3_write32(struct voodoofb_softc *sc, uint32_t reg, uint32_t val) 259 { 260 bus_space_write_4(sc->sc_regt, sc->sc_regh, reg, val); 261 } 262 263 static inline void 264 voodoo3_write32s(struct voodoofb_softc *sc, uint32_t reg, uint32_t val) 265 { 266 bus_space_write_stream_4(sc->sc_regt, sc->sc_regh, reg, val); 267 } 268 static inline uint32_t 269 voodoo3_read32(struct voodoofb_softc *sc, uint32_t reg) 270 { 271 return bus_space_read_4(sc->sc_regt, sc->sc_regh, reg); 272 } 273 274 static inline void 275 voodoo3_write_crtc(struct voodoofb_softc *sc, uint8_t reg, uint8_t val) 276 { 277 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, CRTC_INDEX - 0x300, reg); 278 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, CRTC_DATA - 0x300, val); 279 } 280 281 static inline void 282 voodoo3_write_seq(struct voodoofb_softc *sc, uint8_t reg, uint8_t val) 283 { 284 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, SEQ_INDEX - 0x300, reg); 285 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, SEQ_DATA - 0x300, val); 286 } 287 288 static inline void 289 voodoo3_write_gra(struct voodoofb_softc *sc, uint8_t reg, uint8_t val) 290 { 291 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, GRA_INDEX - 0x300, reg); 292 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, GRA_DATA - 0x300, val); 293 } 294 295 static inline void 296 voodoo3_write_attr(struct voodoofb_softc *sc, uint8_t reg, uint8_t val) 297 { 298 uint8_t index; 299 300 (void)bus_space_read_1(sc->sc_ioregt, sc->sc_ioregh, IS1_R - 0x300); 301 index = bus_space_read_1(sc->sc_ioregt, sc->sc_ioregh, ATT_IW - 0x300); 302 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, ATT_IW - 0x300, reg); 303 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, ATT_IW - 0x300, val); 304 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, ATT_IW - 0x300, index); 305 } 306 307 static inline void 308 vga_outb(struct voodoofb_softc *sc, uint32_t reg, uint8_t val) 309 { 310 bus_space_write_1(sc->sc_ioregt, sc->sc_ioregh, reg - 0x300, val); 311 } 312 313 /* wait until there's room for len bytes in the FIFO */ 314 static inline void 315 voodoo3_make_room(struct voodoofb_softc *sc, int len) 316 { 317 while ((voodoo3_read32(sc, STATUS) & 0x1f) < len); 318 } 319 320 static void 321 voodoofb_wait_idle(struct voodoofb_softc *sc) 322 { 323 int i = 0; 324 325 voodoo3_make_room(sc, 1); 326 voodoo3_write32(sc, COMMAND_3D, COMMAND_3D_NOP); 327 328 while (1) { 329 i = (voodoo3_read32(sc, STATUS) & STATUS_BUSY) ? 0 : i + 1; 330 if(i == 3) break; 331 } 332 } 333 334 static int 335 voodoofb_match(device_t parent, cfdata_t match, void *aux) 336 { 337 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 338 339 if (PCI_CLASS(pa->pa_class) != PCI_CLASS_DISPLAY || 340 PCI_SUBCLASS(pa->pa_class) != PCI_SUBCLASS_DISPLAY_VGA) 341 return 0; 342 if ((PCI_VENDOR(pa->pa_id)==PCI_VENDOR_3DFX) && 343 (PCI_PRODUCT(pa->pa_id)>=PCI_PRODUCT_3DFX_VOODOO3)) 344 return 100; 345 346 if ((PCI_VENDOR(pa->pa_id)==PCI_VENDOR_3DFX) && 347 (PCI_PRODUCT(pa->pa_id)>=PCI_PRODUCT_3DFX_BANSHEE)) 348 return 100; 349 return 0; 350 } 351 352 static void 353 voodoofb_attach(device_t parent, device_t self, void *aux) 354 { 355 struct voodoofb_softc *sc = device_private(self); 356 struct pci_attach_args *pa = aux; 357 struct wsemuldisplaydev_attach_args aa; 358 struct rasops_info *ri; 359 #ifdef VOODOOFB_ENABLE_INTR 360 pci_intr_handle_t ih; 361 const char *intrstr; 362 #endif 363 ulong defattr; 364 int console, width, height, i; 365 prop_dictionary_t dict; 366 int linebytes, depth, flags; 367 uint32_t bg, fg, ul; 368 369 sc->sc_dev = self; 370 371 sc->sc_mode = WSDISPLAYIO_MODE_EMUL; 372 sc->sc_pc = pa->pa_pc; 373 sc->sc_pcitag = pa->pa_tag; 374 sc->sc_dacw = -1; 375 pci_aprint_devinfo(pa, NULL); 376 377 sc->sc_memt = pa->pa_memt; 378 sc->sc_iot = pa->pa_iot; 379 sc->sc_pa = *pa; 380 381 if (PCI_PRODUCT(pa->pa_id)>=PCI_PRODUCT_3DFX_BANSHEE) 382 sc->sc_max_clock = MAX_CLOCK_VB; 383 else 384 sc->sc_max_clock = MAX_CLOCK_V3; 385 386 /* the framebuffer */ 387 if (pci_mapreg_info(sc->sc_pc, sc->sc_pcitag, 0x14, 388 PCI_MAPREG_TYPE_MEM, &sc->sc_fb, &sc->sc_fbsize, &flags)) { 389 aprint_error_dev(self, "failed to map the frame buffer.\n"); 390 } 391 sc->sc_memsize = sc->sc_fbsize >> 1; /* VRAM aperture is 2x VRAM */ 392 393 /* memory-mapped registers */ 394 if (pci_mapreg_map(pa, 0x10, PCI_MAPREG_TYPE_MEM, 0, 395 &sc->sc_regt, &sc->sc_regh, &sc->sc_regs, &sc->sc_regsize)) { 396 aprint_error_dev(self, 397 "failed to map memory-mapped registers.\n"); 398 } 399 400 /* IO-mapped registers */ 401 if (pci_mapreg_map(pa, 0x18, PCI_MAPREG_TYPE_IO, 0, 402 &sc->sc_ioregt, &sc->sc_ioregh, &sc->sc_ioreg, 403 &sc->sc_ioregsize)) { 404 aprint_error_dev(self, "failed to map IO-mapped registers.\n"); 405 } 406 sc->sc_is_mapped = TRUE; 407 voodoofb_init(sc); 408 409 /* we should read these from the chip instead of depending on OF */ 410 width = height = -1; 411 412 dict = device_properties(self); 413 if (!prop_dictionary_get_uint32(dict, "width", &width)) { 414 aprint_error_dev(self, "no width property\n"); 415 return; 416 } 417 if (!prop_dictionary_get_uint32(dict, "height", &height)) { 418 aprint_error_dev(self, "no height property\n"); 419 return; 420 } 421 if (!prop_dictionary_get_uint32(dict, "depth", &depth)) { 422 aprint_error_dev(self, "no depth property\n"); 423 return; 424 } 425 linebytes = width; /* XXX */ 426 427 if (width == -1 || height == -1) 428 return; 429 430 sc->sc_width = width; 431 sc->sc_height = height; 432 sc->sc_bits_per_pixel = depth; 433 sc->sc_linebytes = linebytes; 434 printf("%s: initial resolution %dx%d, %d bit\n", device_xname(self), 435 sc->sc_width, sc->sc_height, sc->sc_bits_per_pixel); 436 437 sc->sc_videomode = NULL; 438 voodoofb_setup_i2c(sc); 439 440 /* XXX this should at least be configurable via kernel config */ 441 if (sc->sc_videomode == NULL) { 442 sc->sc_videomode = pick_mode_by_ref(width, height, 60); 443 } 444 445 voodoofb_set_videomode(sc, sc->sc_videomode); 446 447 sc->sc_font = NULL; 448 449 vcons_init(&sc->vd, sc, &voodoofb_defaultscreen, &voodoofb_accessops); 450 sc->vd.init_screen = voodoofb_init_screen; 451 452 console = voodoofb_is_console(sc); 453 454 ri = &voodoofb_console_screen.scr_ri; 455 if (console) { 456 vcons_init_screen(&sc->vd, &voodoofb_console_screen, 1, 457 &defattr); 458 voodoofb_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; 459 460 voodoofb_defaultscreen.textops = &ri->ri_ops; 461 voodoofb_defaultscreen.capabilities = ri->ri_caps; 462 voodoofb_defaultscreen.nrows = ri->ri_rows; 463 voodoofb_defaultscreen.ncols = ri->ri_cols; 464 wsdisplay_cnattach(&voodoofb_defaultscreen, ri, 0, 0, defattr); 465 } else { 466 if (voodoofb_console_screen.scr_ri.ri_rows == 0) { 467 /* do some minimal setup to avoid weirdnesses later */ 468 vcons_init_screen(&sc->vd, &voodoofb_console_screen, 469 1, &defattr); 470 } else 471 (*ri->ri_ops.allocattr)(ri, 0, 0, 0, &defattr); 472 } 473 474 printf("%s: %d MB aperture at 0x%08x, %d MB registers at 0x%08x\n", 475 device_xname(self), (u_int)(sc->sc_fbsize >> 20), 476 (u_int)sc->sc_fb, (u_int)(sc->sc_regsize >> 20), 477 (u_int)sc->sc_regs); 478 #ifdef VOODOOFB_DEBUG 479 printf("fb: %08lx\n", (ulong)ri->ri_bits); 480 #endif 481 482 if (sc->sc_bits_per_pixel == 8) { 483 uint8_t tmp; 484 for (i = 0; i < 256; i++) { 485 tmp = i & 0xe0; 486 /* 487 * replicate bits so 0xe0 maps to a red value of 0xff 488 * in order to make white look actually white 489 */ 490 tmp |= (tmp >> 3) | (tmp >> 6); 491 sc->sc_cmap_red[i] = tmp; 492 493 tmp = (i & 0x1c) << 3; 494 tmp |= (tmp >> 3) | (tmp >> 6); 495 sc->sc_cmap_green[i] = tmp; 496 497 tmp = (i & 0x03) << 6; 498 tmp |= tmp >> 2; 499 tmp |= tmp >> 4; 500 sc->sc_cmap_blue[i] = tmp; 501 502 voodoofb_putpalreg(sc, i, sc->sc_cmap_red[i], 503 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 504 } 505 } else { 506 /* linear ramp */ 507 for (i = 0; i < 256; i++) { 508 sc->sc_cmap_red[i] = i; 509 sc->sc_cmap_green[i] = i; 510 sc->sc_cmap_blue[i] = i; 511 512 voodoofb_putpalreg(sc, i, sc->sc_cmap_red[i], 513 sc->sc_cmap_green[i], sc->sc_cmap_blue[i]); 514 } 515 } 516 517 #ifdef VOODOOFB_ENABLE_INTR 518 char intrbuf[PCI_INTRSTR_LEN]; 519 /* Interrupt. We don't use it for anything yet */ 520 if (pci_intr_map(pa, &ih)) { 521 aprint_error_dev(self, "failed to map interrupt\n"); 522 return; 523 } 524 525 intrstr = pci_intr_string(sc->sc_pc, ih, intrbuf, sizeof(intrbuf)); 526 sc->sc_ih = pci_intr_establish_xname(sc->sc_pc, ih, IPL_NET, 527 voodoofb_intr, sc, device_xname(self)); 528 if (sc->sc_ih == NULL) { 529 aprint_error_dev(self, "failed to establish interrupt"); 530 if (intrstr != NULL) 531 aprint_error(" at %s", intrstr); 532 aprint_error("\n"); 533 return; 534 } 535 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 536 #endif 537 538 rasops_unpack_attr(defattr, &fg, &bg, &ul); 539 sc->sc_bg = ri->ri_devcmap[bg]; 540 voodoofb_clearscreen(sc); 541 542 if (console) 543 vcons_replay_msgbuf(&voodoofb_console_screen); 544 aa.console = console; 545 aa.scrdata = &voodoofb_screenlist; 546 aa.accessops = &voodoofb_accessops; 547 aa.accesscookie = &sc->vd; 548 549 config_found(self, &aa, wsemuldisplaydevprint, 550 CFARG_IATTR, "wsemuldisplaydev", 551 CFARG_EOL); 552 config_found(self, aux, voodoofb_drm_print, 553 CFARG_IATTR, "drm", 554 CFARG_EOL); 555 } 556 557 static int 558 voodoofb_drm_print(void *opaque, const char *pnp) 559 { 560 if (pnp) 561 aprint_normal("drm at %s", pnp); 562 563 return UNCONF; 564 } 565 566 static int 567 voodoofb_drm_unmap(struct voodoofb_softc *sc) 568 { 569 570 if (!sc->sc_is_mapped) 571 return 0; 572 573 printf("%s: releasing bus resources\n", device_xname(sc->sc_dev)); 574 575 bus_space_unmap(sc->sc_ioregt, sc->sc_ioregh, sc->sc_ioregsize); 576 bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsize); 577 578 sc->sc_is_mapped = FALSE; 579 580 return 0; 581 } 582 583 static int 584 voodoofb_drm_map(struct voodoofb_softc *sc) 585 { 586 587 if (sc->sc_is_mapped) 588 return 0; 589 590 /* memory-mapped registers */ 591 if (pci_mapreg_map(&sc->sc_pa, 0x10, PCI_MAPREG_TYPE_MEM, 0, 592 &sc->sc_regt, &sc->sc_regh, &sc->sc_regs, &sc->sc_regsize)) { 593 aprint_error_dev(sc->sc_dev, 594 "failed to map memory-mapped registers.\n"); 595 } 596 597 /* IO-mapped registers */ 598 if (pci_mapreg_map(&sc->sc_pa, 0x18, PCI_MAPREG_TYPE_IO, 0, 599 &sc->sc_ioregt, &sc->sc_ioregh, &sc->sc_ioreg, 600 &sc->sc_ioregsize)) { 601 aprint_error_dev(sc->sc_dev, 602 "failed to map IO-mapped registers.\n"); 603 } 604 605 sc->sc_is_mapped = TRUE; 606 607 voodoofb_init(sc); 608 /* XXX this should at least be configurable via kernel config */ 609 voodoofb_set_videomode(sc, sc->sc_videomode); 610 611 return 0; 612 } 613 614 static int 615 voodoofb_putpalreg(struct voodoofb_softc *sc, uint8_t index, uint8_t r, 616 uint8_t g, uint8_t b) 617 { 618 uint32_t color; 619 620 sc->sc_cmap_red[index] = r; 621 sc->sc_cmap_green[index] = g; 622 sc->sc_cmap_blue[index] = b; 623 624 color = (r << 16) | (g << 8) | b; 625 voodoo3_make_room(sc, 2); 626 voodoo3_write32(sc, DACADDR, index); 627 voodoo3_write32(sc, DACDATA, color); 628 629 return 0; 630 } 631 632 static int 633 voodoofb_putcmap(struct voodoofb_softc *sc, struct wsdisplay_cmap *cm) 634 { 635 u_char *r, *g, *b; 636 u_int index = cm->index; 637 u_int count = cm->count; 638 int i, error; 639 u_char rbuf[256], gbuf[256], bbuf[256]; 640 641 #ifdef VOODOOFB_DEBUG 642 printf("putcmap: %d %d\n",index, count); 643 #endif 644 if (cm->index >= 256 || cm->count > 256 || 645 (cm->index + cm->count) > 256) 646 return EINVAL; 647 error = copyin(cm->red, &rbuf[index], count); 648 if (error) 649 return error; 650 error = copyin(cm->green, &gbuf[index], count); 651 if (error) 652 return error; 653 error = copyin(cm->blue, &bbuf[index], count); 654 if (error) 655 return error; 656 657 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 658 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 659 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 660 661 r = &sc->sc_cmap_red[index]; 662 g = &sc->sc_cmap_green[index]; 663 b = &sc->sc_cmap_blue[index]; 664 665 for (i = 0; i < count; i++) { 666 voodoofb_putpalreg(sc, index, *r, *g, *b); 667 index++; 668 r++, g++, b++; 669 } 670 return 0; 671 } 672 673 static int 674 voodoofb_getcmap(struct voodoofb_softc *sc, struct wsdisplay_cmap *cm) 675 { 676 u_int index = cm->index; 677 u_int count = cm->count; 678 int error; 679 680 if (index >= 255 || count > 256 || index + count > 256) 681 return EINVAL; 682 683 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 684 if (error) 685 return error; 686 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 687 if (error) 688 return error; 689 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 690 if (error) 691 return error; 692 693 return 0; 694 } 695 696 static bool 697 voodoofb_is_console(struct voodoofb_softc *sc) 698 { 699 prop_dictionary_t dict; 700 bool console = FALSE; 701 702 dict = device_properties(sc->sc_dev); 703 prop_dictionary_get_bool(dict, "is_console", &console); 704 return console; 705 } 706 707 static void 708 voodoofb_clearscreen(struct voodoofb_softc *sc) 709 { 710 voodoofb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height, sc->sc_bg); 711 } 712 713 /* 714 * wsdisplay_emulops 715 */ 716 717 static void 718 voodoofb_cursor(void *cookie, int on, int row, int col) 719 { 720 struct rasops_info *ri = cookie; 721 struct vcons_screen *scr = ri->ri_hw; 722 struct voodoofb_softc *sc = scr->scr_cookie; 723 int x, y, wi, he; 724 725 wi = ri->ri_font->fontwidth; 726 he = ri->ri_font->fontheight; 727 728 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 729 x = ri->ri_ccol * wi + ri->ri_xorigin; 730 y = ri->ri_crow * he + ri->ri_yorigin; 731 if (ri->ri_flg & RI_CURSOR) { 732 voodoofb_rectinvert(sc, x, y, wi, he); 733 ri->ri_flg &= ~RI_CURSOR; 734 } 735 ri->ri_crow = row; 736 ri->ri_ccol = col; 737 if (on) 738 { 739 x = ri->ri_ccol * wi + ri->ri_xorigin; 740 y = ri->ri_crow * he + ri->ri_yorigin; 741 voodoofb_rectinvert(sc, x, y, wi, he); 742 ri->ri_flg |= RI_CURSOR; 743 } 744 } else { 745 ri->ri_flg &= ~RI_CURSOR; 746 ri->ri_crow = row; 747 ri->ri_ccol = col; 748 } 749 } 750 751 #if 0 752 int 753 voodoofb_mapchar(void *cookie, int uni, u_int *index) 754 { 755 return 0; 756 } 757 #endif 758 759 static void 760 voodoofb_putchar(void *cookie, int row, int col, u_int c, long attr) 761 { 762 struct rasops_info *ri = cookie; 763 struct wsdisplay_font *font = PICK_FONT(ri, c); 764 struct vcons_screen *scr = ri->ri_hw; 765 struct voodoofb_softc *sc = scr->scr_cookie; 766 767 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 768 uint8_t *data; 769 int fg, bg, uc, i; 770 int x, y, wi, he; 771 772 wi = font->fontwidth; 773 he = font->fontheight; 774 775 if (!CHAR_IN_FONT(c, font)) 776 return; 777 bg = (u_char)ri->ri_devcmap[(attr >> 16) & 0xf]; 778 fg = (u_char)ri->ri_devcmap[(attr >> 24) & 0xf]; 779 x = ri->ri_xorigin + col * wi; 780 y = ri->ri_yorigin + row * he; 781 if (c == 0x20) { 782 voodoofb_rectfill(sc, x, y, wi, he, bg); 783 } else { 784 uc = c - font->firstchar; 785 data = (uint8_t *)font->data + uc * 786 ri->ri_fontscale; 787 voodoofb_setup_mono(sc, x, y, wi, he, fg, bg); 788 for (i = 0; i < he; i++) { 789 voodoofb_feed_line(sc, font->stride, data); 790 data += font->stride; 791 } 792 } 793 } 794 } 795 796 static void 797 voodoofb_putchar_aa(void *cookie, int row, int col, u_int c, long attr) 798 { 799 struct rasops_info *ri = cookie; 800 struct wsdisplay_font *font = PICK_FONT(ri, c); 801 struct vcons_screen *scr = ri->ri_hw; 802 struct voodoofb_softc *sc = scr->scr_cookie; 803 uint8_t *data; 804 uint32_t bg, latch = 0, bg8, fg8, pixel, save_offset = 0; 805 int i, x, y, wi, he, r, g, b, aval; 806 int r1, g1, b1, r0, g0, b0, fgo, bgo, j; 807 808 if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) 809 return; 810 811 if (!CHAR_IN_FONT(c, font)) 812 return; 813 814 wi = font->fontwidth; 815 he = font->fontheight; 816 817 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 818 x = ri->ri_xorigin + col * wi; 819 y = ri->ri_yorigin + row * he; 820 if (c == 0x20) { 821 voodoofb_rectfill(sc, x, y, wi, he, bg); 822 return; 823 } 824 825 /* first, see if it's in the cache */ 826 if ((attr == sc->sc_defattr) && (c < 256)) { 827 uint32_t offset = sc->sc_glyphs_defattr[c]; 828 if (offset != 0) { 829 voodoo3_make_room(sc, 8); 830 voodoo3_write32(sc, SRCBASE, offset); 831 voodoo3_write32(sc, DSTBASE, 0); 832 voodoo3_write32(sc, SRCFORMAT, sc->sc_fmt); 833 voodoo3_write32(sc, DSTFORMAT, 834 sc->sc_linebytes | FMT_8BIT); 835 voodoo3_write32(sc, DSTSIZE, wi | (he << 16)); 836 voodoo3_write32(sc, DSTXY, x | (y << 16)); 837 voodoo3_write32(sc, SRCXY, 0); 838 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_S2S_BITBLT 839 | (ROP_COPY << 24) | SST_2D_GO); 840 return; 841 } else { 842 int slot = sc->sc_usedglyphs; 843 sc->sc_usedglyphs++; 844 save_offset = sc->sc_cache + (slot * ri->ri_fontscale); 845 sc->sc_glyphs_defattr[c] = save_offset; 846 } 847 } 848 data = WSFONT_GLYPH(c, font); 849 850 voodoo3_make_room(sc, 7); 851 voodoo3_write32(sc, DSTBASE, 0); 852 voodoo3_write32(sc, SRCFORMAT, FMT_8BIT | FMT_PAD_BYTE); 853 voodoo3_write32(sc, DSTFORMAT, sc->sc_linebytes | FMT_8BIT); 854 voodoo3_write32(sc, DSTSIZE, wi | (he << 16)); 855 voodoo3_write32(sc, DSTXY, x | (y << 16)); 856 voodoo3_write32(sc, SRCXY, 0); 857 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_H2S_BITBLT | 858 (ROP_COPY << 24) | SST_2D_GO); 859 860 /* 861 * we need the RGB colours here, so get offsets into rasops_cmap 862 */ 863 fgo = ((attr >> 24) & 0xf) * 3; 864 bgo = ((attr >> 16) & 0xf) * 3; 865 866 r0 = rasops_cmap[bgo]; 867 r1 = rasops_cmap[fgo]; 868 g0 = rasops_cmap[bgo + 1]; 869 g1 = rasops_cmap[fgo + 1]; 870 b0 = rasops_cmap[bgo + 2]; 871 b1 = rasops_cmap[fgo + 2]; 872 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6)) 873 bg8 = R3G3B2(r0, g0, b0); 874 fg8 = R3G3B2(r1, g1, b1); 875 voodoo3_make_room(sc, 15); 876 j = 15; 877 for (i = 0; i < ri->ri_fontscale; i++) { 878 aval = *data; 879 if (aval == 0) { 880 pixel = bg8; 881 } else if (aval == 255) { 882 pixel = fg8; 883 } else { 884 r = aval * r1 + (255 - aval) * r0; 885 g = aval * g1 + (255 - aval) * g0; 886 b = aval * b1 + (255 - aval) * b0; 887 pixel = ((r & 0xe000) >> 8) | 888 ((g & 0xe000) >> 11) | 889 ((b & 0xc000) >> 14); 890 } 891 latch = (latch << 8) | pixel; 892 /* write in 32bit chunks */ 893 if ((i & 3) == 3) { 894 voodoo3_write32s(sc, LAUNCH_2D, latch); 895 /* 896 * not strictly necessary, old data should be shifted 897 * out 898 */ 899 latch = 0; 900 /* 901 * check for pipeline space every now and then 902 * I don't think we can feed a Voodoo3 faster than it 903 * can process simple pixel data but I have been wrong 904 * about that before 905 */ 906 j--; 907 if (j == 0) { 908 voodoo3_make_room(sc, 15); 909 j = 15; 910 } 911 } 912 data++; 913 } 914 /* if we have pixels left in latch write them out */ 915 if ((i & 3) != 0) { 916 latch = latch << ((4 - (i & 3)) << 3); 917 voodoo3_write32s(sc, LAUNCH_2D, latch); 918 } 919 if (save_offset != 0) { 920 /* save the glyph we just drew */ 921 voodoo3_make_room(sc, 8); 922 voodoo3_write32(sc, SRCBASE, 0); 923 voodoo3_write32(sc, DSTBASE, save_offset); 924 voodoo3_write32(sc, SRCFORMAT, sc->sc_linebytes | FMT_8BIT); 925 voodoo3_write32(sc, DSTFORMAT, sc->sc_fmt); 926 voodoo3_write32(sc, DSTSIZE, wi | (he << 16)); 927 voodoo3_write32(sc, DSTXY, 0); 928 voodoo3_write32(sc, SRCXY, x | (y << 16)); 929 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_S2S_BITBLT | 930 (ROP_COPY << 24) | SST_2D_GO); 931 } 932 } 933 934 static void 935 voodoofb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols) 936 { 937 struct rasops_info *ri = cookie; 938 struct vcons_screen *scr = ri->ri_hw; 939 struct voodoofb_softc *sc = scr->scr_cookie; 940 int32_t xs, xd, y, width, height; 941 942 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 943 xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol; 944 xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol; 945 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 946 width = ri->ri_font->fontwidth * ncols; 947 height = ri->ri_font->fontheight; 948 voodoofb_bitblt(sc, xs, y, xd, y, width, height); 949 } 950 } 951 952 static void 953 voodoofb_erasecols(void *cookie, int row, int startcol, int ncols, 954 long fillattr) 955 { 956 struct rasops_info *ri = cookie; 957 struct vcons_screen *scr = ri->ri_hw; 958 struct voodoofb_softc *sc = scr->scr_cookie; 959 int32_t x, y, width, height, fg, bg, ul; 960 961 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 962 x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol; 963 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 964 width = ri->ri_font->fontwidth * ncols; 965 height = ri->ri_font->fontheight; 966 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 967 968 voodoofb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 969 } 970 } 971 972 static void 973 voodoofb_copyrows(void *cookie, int srcrow, int dstrow, int nrows) 974 { 975 struct rasops_info *ri = cookie; 976 struct vcons_screen *scr = ri->ri_hw; 977 struct voodoofb_softc *sc = scr->scr_cookie; 978 int32_t x, ys, yd, width, height; 979 980 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 981 x = ri->ri_xorigin; 982 ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow; 983 yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow; 984 width = ri->ri_emuwidth; 985 height = ri->ri_font->fontheight * nrows; 986 voodoofb_bitblt(sc, x, ys, x, yd, width, height); 987 } 988 } 989 990 static void 991 voodoofb_eraserows(void *cookie, int row, int nrows, long fillattr) 992 { 993 struct rasops_info *ri = cookie; 994 struct vcons_screen *scr = ri->ri_hw; 995 struct voodoofb_softc *sc = scr->scr_cookie; 996 int32_t x, y, width, height, fg, bg, ul; 997 998 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 999 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 1000 if ((row == 0) && (nrows == ri->ri_rows)) { 1001 /* clear the whole screen */ 1002 voodoofb_rectfill(sc, 0, 0, ri->ri_width, 1003 ri->ri_height, ri->ri_devcmap[bg]); 1004 } else { 1005 x = ri->ri_xorigin; 1006 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1007 width = ri->ri_emuwidth; 1008 height = ri->ri_font->fontheight * nrows; 1009 voodoofb_rectfill(sc, x, y, width, height, 1010 ri->ri_devcmap[bg]); 1011 } 1012 } 1013 } 1014 1015 static void 1016 voodoofb_bitblt(struct voodoofb_softc *sc, int xs, int ys, int xd, int yd, 1017 int width, int height) 1018 { 1019 uint32_t fmt, blitcmd; 1020 1021 fmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1022 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1023 blitcmd = COMMAND_2D_S2S_BITBLT | (ROP_COPY << 24); 1024 1025 if (xs <= xd) { 1026 blitcmd |= BIT(14); 1027 xs += (width - 1); 1028 xd += (width - 1); 1029 } 1030 if (ys <= yd) { 1031 blitcmd |= BIT(15); 1032 ys += (height - 1); 1033 yd += (height - 1); 1034 } 1035 voodoo3_make_room(sc, 8); 1036 1037 voodoo3_write32(sc, SRCBASE, 0); 1038 voodoo3_write32(sc, DSTBASE, 0); 1039 voodoo3_write32(sc, SRCFORMAT, fmt); 1040 voodoo3_write32(sc, DSTFORMAT, fmt); 1041 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1042 voodoo3_write32(sc, DSTXY, xd | (yd << 16)); 1043 voodoo3_write32(sc, SRCXY, xs | (ys << 16)); 1044 voodoo3_write32(sc, COMMAND_2D, blitcmd | SST_2D_GO); 1045 } 1046 1047 static void 1048 voodoofb_rectfill(struct voodoofb_softc *sc, int x, int y, int width, 1049 int height, int colour) 1050 { 1051 uint32_t fmt; 1052 1053 fmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1054 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1055 1056 voodoo3_make_room(sc, 7); 1057 voodoo3_write32(sc, DSTFORMAT, fmt); 1058 voodoo3_write32(sc, DSTBASE, 0); 1059 voodoo3_write32(sc, COLORFORE, colour); 1060 voodoo3_write32(sc, COLORBACK, colour); 1061 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_FILLRECT | (ROP_COPY << 24)); 1062 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1063 voodoo3_write32(sc, LAUNCH_2D, x | (y << 16)); 1064 } 1065 1066 static void 1067 voodoofb_rectinvert(struct voodoofb_softc *sc, int x, int y, int width, 1068 int height) 1069 { 1070 uint32_t fmt; 1071 1072 fmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1073 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1074 1075 voodoo3_make_room(sc, 8); 1076 voodoo3_write32(sc, SRCBASE, 0); 1077 voodoo3_write32(sc, DSTBASE, 0); 1078 voodoo3_write32(sc, DSTFORMAT, fmt); 1079 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_FILLRECT | 1080 (ROP_INVERT << 24)); 1081 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1082 voodoo3_write32(sc, DSTXY, x | (y << 16)); 1083 voodoo3_write32(sc, LAUNCH_2D, x | (y << 16)); 1084 } 1085 1086 static void 1087 voodoofb_setup_mono(struct voodoofb_softc *sc, int xd, int yd, int width, 1088 int height, uint32_t fg, uint32_t bg) 1089 { 1090 uint32_t dfmt, sfmt = sc->sc_linebytes; 1091 1092 dfmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1093 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1094 1095 voodoo3_make_room(sc, 10); 1096 voodoo3_write32(sc, SRCFORMAT, sfmt); 1097 voodoo3_write32(sc, DSTFORMAT, dfmt); 1098 voodoo3_write32(sc, DSTBASE, 0); 1099 voodoo3_write32(sc, COLORFORE, fg); 1100 voodoo3_write32(sc, COLORBACK, bg); 1101 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1102 voodoo3_write32(sc, DSTXY, xd | (yd << 16)); 1103 voodoo3_write32(sc, SRCXY, 0); 1104 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_H2S_BITBLT | 1105 (ROP_COPY << 24) | SST_2D_GO); 1106 1107 /* now feed the data into the chip */ 1108 } 1109 1110 static void 1111 voodoofb_feed_line(struct voodoofb_softc *sc, int count, uint8_t *data) 1112 { 1113 int i; 1114 uint32_t latch = 0, bork; 1115 int shift = 0; 1116 1117 voodoo3_make_room(sc, count); 1118 for (i = 0; i < count; i++) { 1119 bork = data[i]; 1120 latch |= (bork << shift); 1121 if (shift == 24) { 1122 voodoo3_write32(sc, LAUNCH_2D, latch); 1123 latch = 0; 1124 shift = 0; 1125 } else 1126 shift += 8; 1127 } 1128 if (shift != 24) 1129 voodoo3_write32(sc, LAUNCH_2D, latch); 1130 } 1131 1132 #if 0 1133 static int 1134 voodoofb_allocattr(void *cookie, int fg, int bg, int flags, long *attrp) 1135 { 1136 1137 return 0; 1138 } 1139 #endif 1140 1141 /* 1142 * wsdisplay_accessops 1143 */ 1144 1145 static int 1146 voodoofb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 1147 struct lwp *l) 1148 { 1149 struct vcons_data *vd = v; 1150 struct voodoofb_softc *sc = vd->cookie; 1151 struct wsdisplay_fbinfo *wdf; 1152 struct vcons_screen *ms = vd->active; 1153 1154 switch (cmd) { 1155 case WSDISPLAYIO_GTYPE: 1156 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; 1157 return 0; 1158 1159 case WSDISPLAYIO_GINFO: 1160 wdf = (void *)data; 1161 wdf->height = ms->scr_ri.ri_height; 1162 wdf->width = ms->scr_ri.ri_width; 1163 wdf->depth = ms->scr_ri.ri_depth; 1164 wdf->cmsize = 256; 1165 return 0; 1166 1167 case WSDISPLAYIO_GETCMAP: 1168 return voodoofb_getcmap(sc, 1169 (struct wsdisplay_cmap *)data); 1170 1171 case WSDISPLAYIO_PUTCMAP: 1172 return voodoofb_putcmap(sc, 1173 (struct wsdisplay_cmap *)data); 1174 1175 /* PCI config read/write passthrough. */ 1176 case PCI_IOC_CFGREAD: 1177 case PCI_IOC_CFGWRITE: 1178 return pci_devioctl(sc->sc_pc, sc->sc_pcitag, 1179 cmd, data, flag, l); 1180 1181 case WSDISPLAYIO_GET_BUSID: 1182 return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc, 1183 sc->sc_pcitag, data); 1184 1185 case WSDISPLAYIO_SMODE: { 1186 int new_mode = *(int*)data; 1187 if (new_mode != sc->sc_mode) { 1188 sc->sc_mode = new_mode; 1189 if (new_mode == WSDISPLAYIO_MODE_EMUL) { 1190 voodoofb_drm_map(sc); 1191 int i; 1192 1193 /* restore the palette */ 1194 for (i = 0; i < 256; i++) { 1195 voodoofb_putpalreg(sc, 1196 i, 1197 sc->sc_cmap_red[i], 1198 sc->sc_cmap_green[i], 1199 sc->sc_cmap_blue[i]); 1200 } 1201 1202 /* zap the glyph cache */ 1203 for (i = 0; i < 256; i++) { 1204 sc->sc_glyphs_defattr[i] = 0; 1205 sc->sc_glyphs_kernattr[i] = 0; 1206 } 1207 sc->sc_usedglyphs = 0; 1208 1209 voodoofb_clearscreen(sc); 1210 vcons_redraw_screen(ms); 1211 } else { 1212 voodoofb_drm_unmap(sc); 1213 } 1214 } 1215 } 1216 return 0; 1217 /* XXX WSDISPLAYIO_GET_EDID */ 1218 1219 case WSDISPLAYIO_GET_FBINFO: { 1220 struct wsdisplayio_fbinfo *fbi = data; 1221 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 1222 } 1223 } 1224 return EPASSTHROUGH; 1225 } 1226 1227 static paddr_t 1228 voodoofb_mmap(void *v, void *vs, off_t offset, int prot) 1229 { 1230 struct vcons_data *vd = v; 1231 struct voodoofb_softc *sc = vd->cookie; 1232 paddr_t pa; 1233 1234 /* 'regular' framebuffer mmap()ing */ 1235 if (sc->sc_mode == WSDISPLAYIO_MODE_DUMBFB) { 1236 if (offset < sc->sc_fbsize) { 1237 pa = bus_space_mmap(sc->sc_memt, sc->sc_fb, offset, 1238 prot, 1239 BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE); 1240 return pa; 1241 } 1242 } else if (sc->sc_mode == WSDISPLAYIO_MODE_MAPPED) { 1243 1244 if (kauth_authorize_machdep(kauth_cred_get(), 1245 KAUTH_MACHDEP_UNMANAGEDMEM, NULL, NULL, NULL, NULL) != 0) { 1246 aprint_error_dev(sc->sc_dev, "mmap() rejected.\n"); 1247 return -1; 1248 } 1249 1250 if ((offset >= 0xa0000) && 1251 (offset < 0xb0000)) { 1252 pa = bus_space_mmap(sc->sc_memt, 1253 sc->sc_fb, offset - 0xa0000, 1254 prot, BUS_SPACE_MAP_LINEAR); 1255 return pa; 1256 } 1257 1258 if ((offset >= sc->sc_fb) && 1259 (offset < (sc->sc_fb + sc->sc_fbsize))) { 1260 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1261 BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE); 1262 return pa; 1263 } 1264 1265 if ((offset >= sc->sc_regs) && (offset < (sc->sc_regs + 1266 sc->sc_regsize))) { 1267 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1268 BUS_SPACE_MAP_LINEAR); 1269 return pa; 1270 } 1271 1272 #ifdef PCI_MAGIC_IO_RANGE 1273 /* allow mapping of IO space */ 1274 if ((offset >= PCI_MAGIC_IO_RANGE) && 1275 (offset < PCI_MAGIC_IO_RANGE + 0x10000)) { 1276 pa = bus_space_mmap(sc->sc_iot, 1277 offset - PCI_MAGIC_IO_RANGE, 0, prot, 0); 1278 return pa; 1279 } 1280 #endif 1281 1282 #ifdef OFB_ALLOW_OTHERS 1283 if (offset >= 0x80000000) { 1284 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1285 BUS_SPACE_MAP_LINEAR); 1286 return pa; 1287 } 1288 #endif 1289 } 1290 return -1; 1291 } 1292 1293 static void 1294 voodoofb_init_screen(void *cookie, struct vcons_screen *scr, 1295 int existing, long *defattr) 1296 { 1297 struct voodoofb_softc *sc = cookie; 1298 struct rasops_info *ri = &scr->scr_ri; 1299 1300 ri->ri_depth = sc->sc_bits_per_pixel; 1301 ri->ri_width = sc->sc_width; 1302 ri->ri_height = sc->sc_height; 1303 ri->ri_stride = sc->sc_linebytes; 1304 ri->ri_flg = RI_CENTER | RI_8BIT_IS_RGB | RI_ENABLE_ALPHA; 1305 1306 rasops_init(ri, 0, 0); 1307 ri->ri_caps = WSSCREEN_WSCOLORS; 1308 1309 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 1310 sc->sc_width / ri->ri_font->fontwidth); 1311 1312 ri->ri_hw = scr; 1313 ri->ri_ops.copyrows = voodoofb_copyrows; 1314 ri->ri_ops.copycols = voodoofb_copycols; 1315 ri->ri_ops.eraserows = voodoofb_eraserows; 1316 ri->ri_ops.erasecols = voodoofb_erasecols; 1317 ri->ri_ops.cursor = voodoofb_cursor; 1318 if (FONT_IS_ALPHA(ri->ri_font)) { 1319 ri->ri_ops.putchar = voodoofb_putchar_aa; 1320 ri->ri_ops.allocattr(ri, WS_DEFAULT_FG, WS_DEFAULT_BG, 1321 0, &sc->sc_defattr); 1322 sc->sc_kernattr = (WS_KERNEL_FG << 24) | (WS_KERNEL_BG << 16); 1323 voodoofb_init_glyphcache(sc, ri); 1324 } else { 1325 ri->ri_ops.putchar = voodoofb_putchar; 1326 } 1327 } 1328 1329 #if 0 1330 int 1331 voodoofb_load_font(void *v, void *cookie, struct wsdisplay_font *data) 1332 { 1333 1334 return 0; 1335 } 1336 #endif 1337 1338 #ifdef VOODOOFB_ENABLE_INTR 1339 static int 1340 voodoofb_intr(void *arg) 1341 { 1342 struct voodoofb_softc *sc = arg; 1343 1344 voodoo3_write32(sc, V3_STATUS, 0); /* clear interrupts */ 1345 return 1; 1346 } 1347 #endif 1348 1349 /* video mode stuff */ 1350 1351 #define REFFREQ 14318 /* .18 */ 1352 1353 #define ABS(a) ((a < 0) ? -a : a) 1354 1355 static int 1356 voodoofb_calc_pll(int freq, int *f_out, int isBanshee) 1357 { 1358 int m, n, k, best_m, best_n, best_k, f_cur, best_error; 1359 int minm, maxm; 1360 1361 best_error = freq; 1362 best_n = best_m = best_k = 0; 1363 1364 if (isBanshee) { 1365 minm = 24; 1366 maxm = 24; 1367 } else { 1368 minm = 1; 1369 maxm = 57; 1370 /* This used to be 64, alas it seems the last 8 (funny that ?) 1371 * values cause jittering at lower resolutions. I've not done 1372 * any calculations to what the adjustment affects clock ranges, 1373 * but I can still run at 1600x1200@75Hz */ 1374 } 1375 for (n = 1; n < 256; n++) { 1376 f_cur = REFFREQ * (n + 2); 1377 if (f_cur < freq) { 1378 f_cur = f_cur / 3; 1379 if (freq - f_cur < best_error) { 1380 best_error = freq - f_cur; 1381 best_n = n; 1382 best_m = 1; 1383 best_k = 0; 1384 continue; 1385 } 1386 } 1387 for (m = minm; m < maxm; m++) { 1388 for (k = 0; k < 4; k++) { 1389 f_cur = REFFREQ * (n + 2) / (m + 2) / (1 << k); 1390 if (ABS(f_cur - freq) < best_error) { 1391 best_error = ABS(f_cur - freq); 1392 best_n = n; 1393 best_m = m; 1394 best_k = k; 1395 } 1396 } 1397 } 1398 } 1399 n = best_n; 1400 m = best_m; 1401 k = best_k; 1402 *f_out = REFFREQ * (n + 2) / (m + 2) / (1 << k); 1403 return ( n << 8) | (m << 2) | k; 1404 } 1405 1406 static void 1407 voodoofb_setup_monitor(struct voodoofb_softc *sc, const struct videomode *vm) 1408 { 1409 struct voodoo_regs mod; 1410 struct voodoo_regs *mode; 1411 uint32_t horizontal_display_end, horizontal_sync_start, 1412 horizontal_sync_end, horizontal_total, 1413 horizontal_blanking_start, horizontal_blanking_end; 1414 1415 uint32_t vertical_display_enable_end, vertical_sync_start, 1416 vertical_sync_end, vertical_total, vertical_blanking_start, 1417 vertical_blanking_end; 1418 1419 uint32_t wd; // CRTC offset 1420 1421 int i; 1422 1423 uint8_t misc; 1424 1425 memset(&mod, 0, sizeof(mod)); 1426 1427 mode = &mod; 1428 1429 wd = (vm->hdisplay >> 3) - 1; 1430 horizontal_display_end = (vm->hdisplay >> 3) - 1; 1431 horizontal_sync_start = (vm->hsync_start >> 3) - 1; 1432 horizontal_sync_end = (vm->hsync_end >> 3) - 1; 1433 horizontal_total = (vm->htotal >> 3) - 1; 1434 horizontal_blanking_start = horizontal_display_end; 1435 horizontal_blanking_end = horizontal_total; 1436 1437 vertical_display_enable_end = vm->vdisplay - 1; 1438 vertical_sync_start = vm->vsync_start; // - 1; 1439 vertical_sync_end = vm->vsync_end; // - 1; 1440 vertical_total = vm->vtotal - 2; 1441 vertical_blanking_start = vertical_display_enable_end; 1442 vertical_blanking_end = vertical_total; 1443 1444 #if 0 1445 misc = 0x0f | 1446 (vm->hdisplay < 400 ? 0xa0 : 1447 vm->hdisplay < 480 ? 0x60 : 1448 vm->hdisplay < 768 ? 0xe0 : 0x20); 1449 #else 1450 misc = 0x2f; 1451 if (vm->flags & VID_NHSYNC) 1452 misc |= HSYNC_NEG; 1453 if (vm->flags & VID_NVSYNC) 1454 misc |= VSYNC_NEG; 1455 #ifdef VOODOOFB_DEBUG 1456 printf("misc: %02x\n", misc); 1457 #endif 1458 #endif 1459 mode->vr_seq[0] = 3; 1460 mode->vr_seq[1] = 1; 1461 mode->vr_seq[2] = 8; 1462 mode->vr_seq[3] = 0; 1463 mode->vr_seq[4] = 6; 1464 1465 /* crtc regs start */ 1466 mode->vr_crtc[0] = horizontal_total - 4; 1467 mode->vr_crtc[1] = horizontal_display_end; 1468 mode->vr_crtc[2] = horizontal_blanking_start; 1469 mode->vr_crtc[3] = 0x80 | (horizontal_blanking_end & 0x1f); 1470 mode->vr_crtc[4] = horizontal_sync_start; 1471 1472 mode->vr_crtc[5] = ((horizontal_blanking_end & 0x20) << 2) | 1473 (horizontal_sync_end & 0x1f); 1474 mode->vr_crtc[6] = vertical_total; 1475 mode->vr_crtc[7] = ((vertical_sync_start & 0x200) >> 2) | 1476 ((vertical_display_enable_end & 0x200) >> 3) | 1477 ((vertical_total & 0x200) >> 4) | 1478 0x10 | 1479 ((vertical_blanking_start & 0x100) >> 5) | 1480 ((vertical_sync_start & 0x100) >> 6) | 1481 ((vertical_display_enable_end & 0x100) >> 7) | 1482 ((vertical_total & 0x100) >> 8); 1483 1484 mode->vr_crtc[8] = 0; 1485 mode->vr_crtc[9] = 0x40 | 1486 ((vertical_blanking_start & 0x200) >> 4); 1487 1488 mode->vr_crtc[10] = 0; 1489 mode->vr_crtc[11] = 0; 1490 mode->vr_crtc[12] = 0; 1491 mode->vr_crtc[13] = 0; 1492 mode->vr_crtc[14] = 0; 1493 mode->vr_crtc[15] = 0; 1494 1495 mode->vr_crtc[16] = vertical_sync_start; 1496 mode->vr_crtc[17] = (vertical_sync_end & 0x0f) | 0x20; 1497 mode->vr_crtc[18] = vertical_display_enable_end; 1498 mode->vr_crtc[19] = wd; // CRTC offset 1499 mode->vr_crtc[20] = 0; 1500 mode->vr_crtc[21] = vertical_blanking_start; 1501 mode->vr_crtc[22] = vertical_blanking_end + 1; 1502 mode->vr_crtc[23] = 128; 1503 mode->vr_crtc[24] = 255; 1504 1505 /* overflow registers */ 1506 mode->vr_crtc[CRTC_HDISP_EXT] = 1507 (horizontal_total&0x100) >> 8 | 1508 (horizontal_display_end & 0x100) >> 6 | 1509 (horizontal_blanking_start & 0x100) >> 4 | 1510 (horizontal_blanking_end & 0x40) >> 1 | 1511 (horizontal_sync_start & 0x100) >> 2 | 1512 (horizontal_sync_end & 0x20) << 2; 1513 1514 mode->vr_crtc[CRTC_VDISP_EXT] = 1515 (vertical_total & 0x400) >> 10 | 1516 (vertical_display_enable_end & 0x400) >> 8 | /* the manual is contradictory here */ 1517 (vertical_blanking_start & 0x400) >> 6 | 1518 (vertical_blanking_end & 0x400) >> 4; 1519 1520 /* attr regs start */ 1521 mode->vr_attr[0] = 0; 1522 mode->vr_attr[1] = 0; 1523 mode->vr_attr[2] = 0; 1524 mode->vr_attr[3] = 0; 1525 mode->vr_attr[4] = 0; 1526 mode->vr_attr[5] = 0; 1527 mode->vr_attr[6] = 0; 1528 mode->vr_attr[7] = 0; 1529 mode->vr_attr[8] = 0; 1530 mode->vr_attr[9] = 0; 1531 mode->vr_attr[10] = 0; 1532 mode->vr_attr[11] = 0; 1533 mode->vr_attr[12] = 0; 1534 mode->vr_attr[13] = 0; 1535 mode->vr_attr[14] = 0; 1536 mode->vr_attr[15] = 0; 1537 mode->vr_attr[16] = 1; 1538 mode->vr_attr[17] = 0; 1539 mode->vr_attr[18] = 15; 1540 mode->vr_attr[19] = 0; 1541 /* attr regs end */ 1542 1543 /* graph regs start */ 1544 mode->vr_graph[0] = 159; 1545 mode->vr_graph[1] = 127; 1546 mode->vr_graph[2] = 127; 1547 mode->vr_graph[3] = 131; 1548 mode->vr_graph[4] = 130; 1549 mode->vr_graph[5] = 142; 1550 mode->vr_graph[6] = 30; 1551 mode->vr_graph[7] = 245; 1552 mode->vr_graph[8] = 0; 1553 1554 vga_outb(sc, MISC_W, misc | 0x01); 1555 1556 for(i = 0; i < 5; i++) 1557 voodoo3_write_seq(sc, i, mode->vr_seq[i]); 1558 for (i = 0; i < CRTC_PCI_READBACK; i ++) 1559 voodoo3_write_crtc(sc, i, mode->vr_crtc[i]); 1560 for (i = 0; i < 0x14; i ++) 1561 voodoo3_write_attr(sc, i, mode->vr_attr[i]); 1562 for (i = 0; i < 0x09; i ++) 1563 voodoo3_write_gra(sc, i, mode->vr_graph[i]); 1564 } 1565 1566 static void 1567 voodoofb_set_videomode(struct voodoofb_softc *sc, 1568 const struct videomode *vm) 1569 { 1570 uint32_t miscinit0 = 0; 1571 int vidpll, fout; 1572 uint32_t vidproc = VIDPROCDEFAULT; 1573 uint32_t bpp = 1; /* for now */ 1574 uint32_t bytes_per_row = vm->hdisplay * bpp; 1575 1576 sc->sc_bits_per_pixel = bpp << 3; 1577 sc->sc_width = vm->hdisplay; 1578 sc->sc_height = vm->vdisplay; 1579 sc->sc_linebytes = bytes_per_row; 1580 1581 voodoofb_setup_monitor(sc, vm); 1582 1583 vidproc &= ~(0x1c0000); /* clear bits 18 to 20, bpp in vidproccfg */ 1584 /* enable bits 18 to 20 to the required bpp */ 1585 vidproc |= ((bpp - 1) << VIDCFG_PIXFMT_SHIFT); 1586 1587 vidpll = voodoofb_calc_pll(vm->dot_clock, &fout, 0); 1588 1589 #ifdef VOODOOFB_DEBUG 1590 uint32_t vp; 1591 vp = voodoo3_read32(sc, VIDPROCCFG); 1592 printf("old vidproc: %08x\n", vp); 1593 printf("pll: %08x %d\n", vidpll, fout); 1594 #endif 1595 /* bit 10 of vidproccfg, is enabled or disabled as needed */ 1596 switch (bpp) { 1597 case 1: 1598 /* 1599 * bit 10 off for palettized modes only, off means 1600 * palette is used 1601 */ 1602 vidproc &= ~(1 << 10); 1603 break; 1604 #if 0 1605 case 2: 1606 #if __POWERPC__ 1607 miscinit0 = 0xc0000000; 1608 #endif 1609 /* bypass palette for 16bit modes */ 1610 vidproc |= (1 << 10); 1611 break; 1612 case 4: 1613 #if __POWERPC__ 1614 miscinit0 = 0x40000000; 1615 #endif 1616 vidproc |= (1 << 10); /* Same for 32bit modes */ 1617 break; 1618 #endif 1619 default: 1620 printf("We support only 8 bit for now\n"); 1621 return; 1622 } 1623 1624 voodoofb_wait_idle(sc); 1625 1626 voodoo3_write32(sc, MISCINIT1, voodoo3_read32(sc, MISCINIT1) | 0x01); 1627 1628 voodoo3_make_room(sc, 4); 1629 voodoo3_write32(sc, VGAINIT0, 4928); 1630 voodoo3_write32(sc, DACMODE, 0); 1631 voodoo3_write32(sc, VIDDESKSTRIDE, bytes_per_row); 1632 voodoo3_write32(sc, PLLCTRL0, vidpll); 1633 1634 voodoo3_make_room(sc, 5); 1635 voodoo3_write32(sc, VIDSCREENSIZE, sc->sc_width | 1636 (sc->sc_height << 12)); 1637 voodoo3_write32(sc, VIDDESKSTART, 0); 1638 1639 vidproc &= ~VIDCFG_HWCURSOR_ENABLE; 1640 voodoo3_write32(sc, VIDPROCCFG, vidproc); 1641 1642 voodoo3_write32(sc, VGAINIT1, 0); 1643 voodoo3_write32(sc, MISCINIT0, miscinit0); 1644 #ifdef VOODOOFB_DEBUG 1645 printf("vidproc: %08x\n", vidproc); 1646 #endif 1647 voodoo3_make_room(sc, 8); 1648 voodoo3_write32(sc, SRCBASE, 0); 1649 voodoo3_write32(sc, DSTBASE, 0); 1650 voodoo3_write32(sc, COMMANDEXTRA_2D, 0); 1651 voodoo3_write32(sc, CLIP0MIN, 0); 1652 voodoo3_write32(sc, CLIP0MAX, 0x0fff0fff); 1653 voodoo3_write32(sc, CLIP1MIN, 0); 1654 voodoo3_write32(sc, CLIP1MAX, 0x0fff0fff); 1655 voodoo3_write32(sc, SRCXY, 0); 1656 voodoofb_wait_idle(sc); 1657 printf("%s: switched to %dx%d, %d bit\n", device_xname(sc->sc_dev), 1658 sc->sc_width, sc->sc_height, sc->sc_bits_per_pixel); 1659 sc->sc_numglyphs = 0; /* invalidate the glyph cache */ 1660 } 1661 1662 static void 1663 voodoofb_init(struct voodoofb_softc *sc) 1664 { 1665 /* XXX */ 1666 uint32_t vgainit0 = 0; 1667 uint32_t vidcfg = 0; 1668 1669 #ifdef VOODOOFB_DEBUG 1670 printf("initializing engine..."); 1671 #endif 1672 vgainit0 = voodoo3_read32(sc, VGAINIT0); 1673 #ifdef VOODOOFB_DEBUG 1674 printf("vga: %08x", vgainit0); 1675 #endif 1676 vgainit0 |= 1677 VGAINIT0_8BIT_DAC | 1678 VGAINIT0_EXT_ENABLE | 1679 VGAINIT0_WAKEUP_3C3 | 1680 VGAINIT0_ALT_READBACK | 1681 VGAINIT0_EXTSHIFTOUT; 1682 1683 vidcfg = voodoo3_read32(sc, VIDPROCCFG); 1684 #ifdef VOODOOFB_DEBUG 1685 printf(" vidcfg: %08x\n", vidcfg); 1686 #endif 1687 vidcfg |= 1688 VIDCFG_VIDPROC_ENABLE | 1689 VIDCFG_DESK_ENABLE; 1690 vidcfg &= ~VIDCFG_HWCURSOR_ENABLE; 1691 1692 voodoo3_make_room(sc, 2); 1693 1694 voodoo3_write32(sc, VGAINIT0, vgainit0); 1695 voodoo3_write32(sc, VIDPROCCFG, vidcfg); 1696 1697 voodoo3_make_room(sc, 8); 1698 voodoo3_write32(sc, SRCBASE, 0); 1699 voodoo3_write32(sc, DSTBASE, 0); 1700 voodoo3_write32(sc, COMMANDEXTRA_2D, 0); 1701 voodoo3_write32(sc, CLIP0MIN, 0); 1702 voodoo3_write32(sc, CLIP0MAX, 0x1fff1fff); 1703 voodoo3_write32(sc, CLIP1MIN, 0); 1704 voodoo3_write32(sc, CLIP1MAX, 0x1fff1fff); 1705 voodoo3_write32(sc, SRCXY, 0); 1706 1707 voodoofb_wait_idle(sc); 1708 } 1709 1710 #define MAX_HRES 1700 /* 1711 * XXX in theory we can go higher but I 1712 * couldn't get anything above 1680 x 1200 1713 * to work, so until I find out why, it's 1714 * disabled so people won't end up with a 1715 * blank screen 1716 */ 1717 #define MODE_IS_VALID(m, mclk) (((m)->dot_clock <= (mclk)) && \ 1718 ((m)->hdisplay < MAX_HRES)) 1719 static void 1720 voodoofb_setup_i2c(struct voodoofb_softc *sc) 1721 { 1722 int i; 1723 1724 /* Fill in the i2c tag */ 1725 iic_tag_init(&sc->sc_i2c); 1726 sc->sc_i2c.ic_cookie = sc; 1727 sc->sc_i2c.ic_send_start = voodoofb_i2c_send_start; 1728 sc->sc_i2c.ic_send_stop = voodoofb_i2c_send_stop; 1729 sc->sc_i2c.ic_initiate_xfer = voodoofb_i2c_initiate_xfer; 1730 sc->sc_i2c.ic_read_byte = voodoofb_i2c_read_byte; 1731 sc->sc_i2c.ic_write_byte = voodoofb_i2c_write_byte; 1732 1733 sc->sc_i2creg = voodoo3_read32(sc, VIDSERPARPORT); 1734 #ifdef VOODOOFB_DEBUG 1735 printf("data: %08x\n", sc->sc_i2creg); 1736 #endif 1737 sc->sc_i2creg |= VSP_ENABLE_IIC0; 1738 sc->sc_i2creg &= ~(VSP_SDA0_OUT | VSP_SCL0_OUT); 1739 voodoo3_write32(sc, VIDSERPARPORT, sc->sc_i2creg); 1740 1741 /* zero out the EDID buffer */ 1742 memset(sc->sc_edid_data, 0, 128); 1743 1744 /* Some monitors don't respond first time */ 1745 i = 0; 1746 while (sc->sc_edid_data[1] == 0 && i++ < 3) 1747 ddc_read_edid(&sc->sc_i2c, sc->sc_edid_data, 128); 1748 if (i < 3) { 1749 if (edid_parse(sc->sc_edid_data, &sc->sc_edid_info) != -1) { 1750 #ifdef VOODOOFB_DEBUG 1751 edid_print(&sc->sc_edid_info); 1752 #endif 1753 /* 1754 * Now pick a mode. 1755 * How do we know our max. pixel clock? 1756 * All Voodoo3 should support at least 250MHz. 1757 * All Voodoo3 I've seen so far have at least 8MB 1758 * which we're not going to exhaust either in 8bit. 1759 */ 1760 if ((sc->sc_edid_info.edid_preferred_mode != NULL)) { 1761 struct videomode *m = 1762 sc->sc_edid_info.edid_preferred_mode; 1763 if (MODE_IS_VALID(m, sc->sc_max_clock)) { 1764 sc->sc_videomode = m; 1765 } else { 1766 aprint_error_dev(sc->sc_dev, 1767 "unable to use preferred mode\n"); 1768 } 1769 } 1770 /* 1771 * if we can't use the preferred mode go look for the 1772 * best one we can support 1773 */ 1774 if (sc->sc_videomode == NULL) { 1775 int n = 0; 1776 struct videomode *m = 1777 sc->sc_edid_info.edid_modes; 1778 1779 sort_modes(sc->sc_edid_info.edid_modes, 1780 &sc->sc_edid_info.edid_preferred_mode, 1781 sc->sc_edid_info.edid_nmodes); 1782 while ((sc->sc_videomode == NULL) && 1783 (n < sc->sc_edid_info.edid_nmodes)) { 1784 if (MODE_IS_VALID(&m[n], 1785 sc->sc_max_clock)) { 1786 sc->sc_videomode = &m[n]; 1787 } 1788 n++; 1789 } 1790 } 1791 } 1792 } 1793 } 1794 1795 /* I2C bitbanging */ 1796 static void voodoofb_i2cbb_set_bits(void *cookie, uint32_t bits) 1797 { 1798 struct voodoofb_softc *sc = cookie; 1799 uint32_t out; 1800 1801 out = bits >> 2; /* bitmasks match the IN bits */ 1802 1803 voodoo3_write32(sc, VIDSERPARPORT, sc->sc_i2creg | out); 1804 } 1805 1806 static void voodoofb_i2cbb_set_dir(void *cookie, uint32_t dir) 1807 { 1808 /* Nothing to do */ 1809 } 1810 1811 static uint32_t voodoofb_i2cbb_read(void *cookie) 1812 { 1813 struct voodoofb_softc *sc = cookie; 1814 uint32_t bits; 1815 1816 bits = voodoo3_read32(sc, VIDSERPARPORT); 1817 1818 return bits; 1819 } 1820 1821 /* higher level I2C stuff */ 1822 static int 1823 voodoofb_i2c_send_start(void *cookie, int flags) 1824 { 1825 return (i2c_bitbang_send_start(cookie, flags, &voodoofb_i2cbb_ops)); 1826 } 1827 1828 static int 1829 voodoofb_i2c_send_stop(void *cookie, int flags) 1830 { 1831 1832 return (i2c_bitbang_send_stop(cookie, flags, &voodoofb_i2cbb_ops)); 1833 } 1834 1835 static int 1836 voodoofb_i2c_initiate_xfer(void *cookie, i2c_addr_t addr, int flags) 1837 { 1838 1839 return (i2c_bitbang_initiate_xfer(cookie, addr, flags, 1840 &voodoofb_i2cbb_ops)); 1841 } 1842 1843 static int 1844 voodoofb_i2c_read_byte(void *cookie, uint8_t *valp, int flags) 1845 { 1846 return (i2c_bitbang_read_byte(cookie, valp, flags, &voodoofb_i2cbb_ops)); 1847 } 1848 1849 static int 1850 voodoofb_i2c_write_byte(void *cookie, uint8_t val, int flags) 1851 { 1852 return (i2c_bitbang_write_byte(cookie, val, flags, &voodoofb_i2cbb_ops)); 1853 } 1854 1855 /* glyph cache */ 1856 static void 1857 voodoofb_init_glyphcache(struct voodoofb_softc *sc, struct rasops_info *ri) 1858 { 1859 int bufsize, i; 1860 1861 if (sc->sc_numglyphs != 0) { 1862 /* re-initialize */ 1863 if (ri->ri_font == sc->sc_font) { 1864 /* nothing to do, keep using the same cache */ 1865 return; 1866 } 1867 } 1868 sc->sc_cache = (ri->ri_width * ri->ri_stride + 3) & 0xfffffffc; 1869 bufsize = sc->sc_memsize - sc->sc_cache; 1870 sc->sc_numglyphs = bufsize / ri->ri_fontscale; 1871 sc->sc_usedglyphs = 0; 1872 for (i = 0; i < 256; i++) { 1873 sc->sc_glyphs_kernattr[i] = 0; 1874 sc->sc_glyphs_defattr[i] = 0; 1875 } 1876 sc->sc_fmt = ri->ri_font->fontwidth | FMT_8BIT; 1877 } 1878