1 /* $NetBSD: voodoofb.c,v 1.53 2019/12/22 23:23:32 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 1.53 2019/12/22 23:23:32 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 config_found_ia(self, "drm", aux, voodoofb_drm_print); 551 } 552 553 static int 554 voodoofb_drm_print(void *opaque, const char *pnp) 555 { 556 if (pnp) 557 aprint_normal("drm at %s", pnp); 558 559 return UNCONF; 560 } 561 562 static int 563 voodoofb_drm_unmap(struct voodoofb_softc *sc) 564 { 565 566 if (!sc->sc_is_mapped) 567 return 0; 568 569 printf("%s: releasing bus resources\n", device_xname(sc->sc_dev)); 570 571 bus_space_unmap(sc->sc_ioregt, sc->sc_ioregh, sc->sc_ioregsize); 572 bus_space_unmap(sc->sc_regt, sc->sc_regh, sc->sc_regsize); 573 574 sc->sc_is_mapped = FALSE; 575 576 return 0; 577 } 578 579 static int 580 voodoofb_drm_map(struct voodoofb_softc *sc) 581 { 582 583 if (sc->sc_is_mapped) 584 return 0; 585 586 /* memory-mapped registers */ 587 if (pci_mapreg_map(&sc->sc_pa, 0x10, PCI_MAPREG_TYPE_MEM, 0, 588 &sc->sc_regt, &sc->sc_regh, &sc->sc_regs, &sc->sc_regsize)) { 589 aprint_error_dev(sc->sc_dev, 590 "failed to map memory-mapped registers.\n"); 591 } 592 593 /* IO-mapped registers */ 594 if (pci_mapreg_map(&sc->sc_pa, 0x18, PCI_MAPREG_TYPE_IO, 0, 595 &sc->sc_ioregt, &sc->sc_ioregh, &sc->sc_ioreg, 596 &sc->sc_ioregsize)) { 597 aprint_error_dev(sc->sc_dev, 598 "failed to map IO-mapped registers.\n"); 599 } 600 601 sc->sc_is_mapped = TRUE; 602 603 voodoofb_init(sc); 604 /* XXX this should at least be configurable via kernel config */ 605 voodoofb_set_videomode(sc, sc->sc_videomode); 606 607 return 0; 608 } 609 610 static int 611 voodoofb_putpalreg(struct voodoofb_softc *sc, uint8_t index, uint8_t r, 612 uint8_t g, uint8_t b) 613 { 614 uint32_t color; 615 616 sc->sc_cmap_red[index] = r; 617 sc->sc_cmap_green[index] = g; 618 sc->sc_cmap_blue[index] = b; 619 620 color = (r << 16) | (g << 8) | b; 621 voodoo3_make_room(sc, 2); 622 voodoo3_write32(sc, DACADDR, index); 623 voodoo3_write32(sc, DACDATA, color); 624 625 return 0; 626 } 627 628 static int 629 voodoofb_putcmap(struct voodoofb_softc *sc, struct wsdisplay_cmap *cm) 630 { 631 u_char *r, *g, *b; 632 u_int index = cm->index; 633 u_int count = cm->count; 634 int i, error; 635 u_char rbuf[256], gbuf[256], bbuf[256]; 636 637 #ifdef VOODOOFB_DEBUG 638 printf("putcmap: %d %d\n",index, count); 639 #endif 640 if (cm->index >= 256 || cm->count > 256 || 641 (cm->index + cm->count) > 256) 642 return EINVAL; 643 error = copyin(cm->red, &rbuf[index], count); 644 if (error) 645 return error; 646 error = copyin(cm->green, &gbuf[index], count); 647 if (error) 648 return error; 649 error = copyin(cm->blue, &bbuf[index], count); 650 if (error) 651 return error; 652 653 memcpy(&sc->sc_cmap_red[index], &rbuf[index], count); 654 memcpy(&sc->sc_cmap_green[index], &gbuf[index], count); 655 memcpy(&sc->sc_cmap_blue[index], &bbuf[index], count); 656 657 r = &sc->sc_cmap_red[index]; 658 g = &sc->sc_cmap_green[index]; 659 b = &sc->sc_cmap_blue[index]; 660 661 for (i = 0; i < count; i++) { 662 voodoofb_putpalreg(sc, index, *r, *g, *b); 663 index++; 664 r++, g++, b++; 665 } 666 return 0; 667 } 668 669 static int 670 voodoofb_getcmap(struct voodoofb_softc *sc, struct wsdisplay_cmap *cm) 671 { 672 u_int index = cm->index; 673 u_int count = cm->count; 674 int error; 675 676 if (index >= 255 || count > 256 || index + count > 256) 677 return EINVAL; 678 679 error = copyout(&sc->sc_cmap_red[index], cm->red, count); 680 if (error) 681 return error; 682 error = copyout(&sc->sc_cmap_green[index], cm->green, count); 683 if (error) 684 return error; 685 error = copyout(&sc->sc_cmap_blue[index], cm->blue, count); 686 if (error) 687 return error; 688 689 return 0; 690 } 691 692 static bool 693 voodoofb_is_console(struct voodoofb_softc *sc) 694 { 695 prop_dictionary_t dict; 696 bool console = FALSE; 697 698 dict = device_properties(sc->sc_dev); 699 prop_dictionary_get_bool(dict, "is_console", &console); 700 return console; 701 } 702 703 static void 704 voodoofb_clearscreen(struct voodoofb_softc *sc) 705 { 706 voodoofb_rectfill(sc, 0, 0, sc->sc_width, sc->sc_height, sc->sc_bg); 707 } 708 709 /* 710 * wsdisplay_emulops 711 */ 712 713 static void 714 voodoofb_cursor(void *cookie, int on, int row, int col) 715 { 716 struct rasops_info *ri = cookie; 717 struct vcons_screen *scr = ri->ri_hw; 718 struct voodoofb_softc *sc = scr->scr_cookie; 719 int x, y, wi, he; 720 721 wi = ri->ri_font->fontwidth; 722 he = ri->ri_font->fontheight; 723 724 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 725 x = ri->ri_ccol * wi + ri->ri_xorigin; 726 y = ri->ri_crow * he + ri->ri_yorigin; 727 if (ri->ri_flg & RI_CURSOR) { 728 voodoofb_rectinvert(sc, x, y, wi, he); 729 ri->ri_flg &= ~RI_CURSOR; 730 } 731 ri->ri_crow = row; 732 ri->ri_ccol = col; 733 if (on) 734 { 735 x = ri->ri_ccol * wi + ri->ri_xorigin; 736 y = ri->ri_crow * he + ri->ri_yorigin; 737 voodoofb_rectinvert(sc, x, y, wi, he); 738 ri->ri_flg |= RI_CURSOR; 739 } 740 } else { 741 ri->ri_flg &= ~RI_CURSOR; 742 ri->ri_crow = row; 743 ri->ri_ccol = col; 744 } 745 } 746 747 #if 0 748 int 749 voodoofb_mapchar(void *cookie, int uni, u_int *index) 750 { 751 return 0; 752 } 753 #endif 754 755 static void 756 voodoofb_putchar(void *cookie, int row, int col, u_int c, long attr) 757 { 758 struct rasops_info *ri = cookie; 759 struct wsdisplay_font *font = PICK_FONT(ri, c); 760 struct vcons_screen *scr = ri->ri_hw; 761 struct voodoofb_softc *sc = scr->scr_cookie; 762 763 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 764 uint8_t *data; 765 int fg, bg, uc, i; 766 int x, y, wi, he; 767 768 wi = font->fontwidth; 769 he = font->fontheight; 770 771 if (!CHAR_IN_FONT(c, font)) 772 return; 773 bg = (u_char)ri->ri_devcmap[(attr >> 16) & 0xf]; 774 fg = (u_char)ri->ri_devcmap[(attr >> 24) & 0xf]; 775 x = ri->ri_xorigin + col * wi; 776 y = ri->ri_yorigin + row * he; 777 if (c == 0x20) { 778 voodoofb_rectfill(sc, x, y, wi, he, bg); 779 } else { 780 uc = c - font->firstchar; 781 data = (uint8_t *)font->data + uc * 782 ri->ri_fontscale; 783 voodoofb_setup_mono(sc, x, y, wi, he, fg, bg); 784 for (i = 0; i < he; i++) { 785 voodoofb_feed_line(sc, font->stride, data); 786 data += font->stride; 787 } 788 } 789 } 790 } 791 792 static void 793 voodoofb_putchar_aa(void *cookie, int row, int col, u_int c, long attr) 794 { 795 struct rasops_info *ri = cookie; 796 struct wsdisplay_font *font = PICK_FONT(ri, c); 797 struct vcons_screen *scr = ri->ri_hw; 798 struct voodoofb_softc *sc = scr->scr_cookie; 799 uint8_t *data; 800 uint32_t bg, latch = 0, bg8, fg8, pixel, save_offset = 0; 801 int i, x, y, wi, he, r, g, b, aval; 802 int r1, g1, b1, r0, g0, b0, fgo, bgo, j; 803 804 if (sc->sc_mode != WSDISPLAYIO_MODE_EMUL) 805 return; 806 807 if (!CHAR_IN_FONT(c, font)) 808 return; 809 810 wi = font->fontwidth; 811 he = font->fontheight; 812 813 bg = ri->ri_devcmap[(attr >> 16) & 0xf]; 814 x = ri->ri_xorigin + col * wi; 815 y = ri->ri_yorigin + row * he; 816 if (c == 0x20) { 817 voodoofb_rectfill(sc, x, y, wi, he, bg); 818 return; 819 } 820 821 /* first, see if it's in the cache */ 822 if ((attr == sc->sc_defattr) && (c < 256)) { 823 uint32_t offset = sc->sc_glyphs_defattr[c]; 824 if (offset != 0) { 825 voodoo3_make_room(sc, 8); 826 voodoo3_write32(sc, SRCBASE, offset); 827 voodoo3_write32(sc, DSTBASE, 0); 828 voodoo3_write32(sc, SRCFORMAT, sc->sc_fmt); 829 voodoo3_write32(sc, DSTFORMAT, 830 sc->sc_linebytes | FMT_8BIT); 831 voodoo3_write32(sc, DSTSIZE, wi | (he << 16)); 832 voodoo3_write32(sc, DSTXY, x | (y << 16)); 833 voodoo3_write32(sc, SRCXY, 0); 834 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_S2S_BITBLT 835 | (ROP_COPY << 24) | SST_2D_GO); 836 return; 837 } else { 838 int slot = sc->sc_usedglyphs; 839 sc->sc_usedglyphs++; 840 save_offset = sc->sc_cache + (slot * ri->ri_fontscale); 841 sc->sc_glyphs_defattr[c] = save_offset; 842 } 843 } 844 data = WSFONT_GLYPH(c, font); 845 846 voodoo3_make_room(sc, 7); 847 voodoo3_write32(sc, DSTBASE, 0); 848 voodoo3_write32(sc, SRCFORMAT, FMT_8BIT | FMT_PAD_BYTE); 849 voodoo3_write32(sc, DSTFORMAT, sc->sc_linebytes | FMT_8BIT); 850 voodoo3_write32(sc, DSTSIZE, wi | (he << 16)); 851 voodoo3_write32(sc, DSTXY, x | (y << 16)); 852 voodoo3_write32(sc, SRCXY, 0); 853 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_H2S_BITBLT | 854 (ROP_COPY << 24) | SST_2D_GO); 855 856 /* 857 * we need the RGB colours here, so get offsets into rasops_cmap 858 */ 859 fgo = ((attr >> 24) & 0xf) * 3; 860 bgo = ((attr >> 16) & 0xf) * 3; 861 862 r0 = rasops_cmap[bgo]; 863 r1 = rasops_cmap[fgo]; 864 g0 = rasops_cmap[bgo + 1]; 865 g1 = rasops_cmap[fgo + 1]; 866 b0 = rasops_cmap[bgo + 2]; 867 b1 = rasops_cmap[fgo + 2]; 868 #define R3G3B2(r, g, b) ((r & 0xe0) | ((g >> 3) & 0x1c) | (b >> 6)) 869 bg8 = R3G3B2(r0, g0, b0); 870 fg8 = R3G3B2(r1, g1, b1); 871 voodoo3_make_room(sc, 15); 872 j = 15; 873 for (i = 0; i < ri->ri_fontscale; i++) { 874 aval = *data; 875 if (aval == 0) { 876 pixel = bg8; 877 } else if (aval == 255) { 878 pixel = fg8; 879 } else { 880 r = aval * r1 + (255 - aval) * r0; 881 g = aval * g1 + (255 - aval) * g0; 882 b = aval * b1 + (255 - aval) * b0; 883 pixel = ((r & 0xe000) >> 8) | 884 ((g & 0xe000) >> 11) | 885 ((b & 0xc000) >> 14); 886 } 887 latch = (latch << 8) | pixel; 888 /* write in 32bit chunks */ 889 if ((i & 3) == 3) { 890 voodoo3_write32s(sc, LAUNCH_2D, latch); 891 /* 892 * not strictly necessary, old data should be shifted 893 * out 894 */ 895 latch = 0; 896 /* 897 * check for pipeline space every now and then 898 * I don't think we can feed a Voodoo3 faster than it 899 * can process simple pixel data but I have been wrong 900 * about that before 901 */ 902 j--; 903 if (j == 0) { 904 voodoo3_make_room(sc, 15); 905 j = 15; 906 } 907 } 908 data++; 909 } 910 /* if we have pixels left in latch write them out */ 911 if ((i & 3) != 0) { 912 latch = latch << ((4 - (i & 3)) << 3); 913 voodoo3_write32s(sc, LAUNCH_2D, latch); 914 } 915 if (save_offset != 0) { 916 /* save the glyph we just drew */ 917 voodoo3_make_room(sc, 8); 918 voodoo3_write32(sc, SRCBASE, 0); 919 voodoo3_write32(sc, DSTBASE, save_offset); 920 voodoo3_write32(sc, SRCFORMAT, sc->sc_linebytes | FMT_8BIT); 921 voodoo3_write32(sc, DSTFORMAT, sc->sc_fmt); 922 voodoo3_write32(sc, DSTSIZE, wi | (he << 16)); 923 voodoo3_write32(sc, DSTXY, 0); 924 voodoo3_write32(sc, SRCXY, x | (y << 16)); 925 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_S2S_BITBLT | 926 (ROP_COPY << 24) | SST_2D_GO); 927 } 928 } 929 930 static void 931 voodoofb_copycols(void *cookie, int row, int srccol, int dstcol, int ncols) 932 { 933 struct rasops_info *ri = cookie; 934 struct vcons_screen *scr = ri->ri_hw; 935 struct voodoofb_softc *sc = scr->scr_cookie; 936 int32_t xs, xd, y, width, height; 937 938 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 939 xs = ri->ri_xorigin + ri->ri_font->fontwidth * srccol; 940 xd = ri->ri_xorigin + ri->ri_font->fontwidth * dstcol; 941 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 942 width = ri->ri_font->fontwidth * ncols; 943 height = ri->ri_font->fontheight; 944 voodoofb_bitblt(sc, xs, y, xd, y, width, height); 945 } 946 } 947 948 static void 949 voodoofb_erasecols(void *cookie, int row, int startcol, int ncols, 950 long fillattr) 951 { 952 struct rasops_info *ri = cookie; 953 struct vcons_screen *scr = ri->ri_hw; 954 struct voodoofb_softc *sc = scr->scr_cookie; 955 int32_t x, y, width, height, fg, bg, ul; 956 957 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 958 x = ri->ri_xorigin + ri->ri_font->fontwidth * startcol; 959 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 960 width = ri->ri_font->fontwidth * ncols; 961 height = ri->ri_font->fontheight; 962 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 963 964 voodoofb_rectfill(sc, x, y, width, height, ri->ri_devcmap[bg]); 965 } 966 } 967 968 static void 969 voodoofb_copyrows(void *cookie, int srcrow, int dstrow, int nrows) 970 { 971 struct rasops_info *ri = cookie; 972 struct vcons_screen *scr = ri->ri_hw; 973 struct voodoofb_softc *sc = scr->scr_cookie; 974 int32_t x, ys, yd, width, height; 975 976 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 977 x = ri->ri_xorigin; 978 ys = ri->ri_yorigin + ri->ri_font->fontheight * srcrow; 979 yd = ri->ri_yorigin + ri->ri_font->fontheight * dstrow; 980 width = ri->ri_emuwidth; 981 height = ri->ri_font->fontheight * nrows; 982 voodoofb_bitblt(sc, x, ys, x, yd, width, height); 983 } 984 } 985 986 static void 987 voodoofb_eraserows(void *cookie, int row, int nrows, long fillattr) 988 { 989 struct rasops_info *ri = cookie; 990 struct vcons_screen *scr = ri->ri_hw; 991 struct voodoofb_softc *sc = scr->scr_cookie; 992 int32_t x, y, width, height, fg, bg, ul; 993 994 if (sc->sc_mode == WSDISPLAYIO_MODE_EMUL) { 995 rasops_unpack_attr(fillattr, &fg, &bg, &ul); 996 if ((row == 0) && (nrows == ri->ri_rows)) { 997 /* clear the whole screen */ 998 voodoofb_rectfill(sc, 0, 0, ri->ri_width, 999 ri->ri_height, ri->ri_devcmap[bg]); 1000 } else { 1001 x = ri->ri_xorigin; 1002 y = ri->ri_yorigin + ri->ri_font->fontheight * row; 1003 width = ri->ri_emuwidth; 1004 height = ri->ri_font->fontheight * nrows; 1005 voodoofb_rectfill(sc, x, y, width, height, 1006 ri->ri_devcmap[bg]); 1007 } 1008 } 1009 } 1010 1011 static void 1012 voodoofb_bitblt(struct voodoofb_softc *sc, int xs, int ys, int xd, int yd, 1013 int width, int height) 1014 { 1015 uint32_t fmt, blitcmd; 1016 1017 fmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1018 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1019 blitcmd = COMMAND_2D_S2S_BITBLT | (ROP_COPY << 24); 1020 1021 if (xs <= xd) { 1022 blitcmd |= BIT(14); 1023 xs += (width - 1); 1024 xd += (width - 1); 1025 } 1026 if (ys <= yd) { 1027 blitcmd |= BIT(15); 1028 ys += (height - 1); 1029 yd += (height - 1); 1030 } 1031 voodoo3_make_room(sc, 8); 1032 1033 voodoo3_write32(sc, SRCBASE, 0); 1034 voodoo3_write32(sc, DSTBASE, 0); 1035 voodoo3_write32(sc, SRCFORMAT, fmt); 1036 voodoo3_write32(sc, DSTFORMAT, fmt); 1037 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1038 voodoo3_write32(sc, DSTXY, xd | (yd << 16)); 1039 voodoo3_write32(sc, SRCXY, xs | (ys << 16)); 1040 voodoo3_write32(sc, COMMAND_2D, blitcmd | SST_2D_GO); 1041 } 1042 1043 static void 1044 voodoofb_rectfill(struct voodoofb_softc *sc, int x, int y, int width, 1045 int height, int colour) 1046 { 1047 uint32_t fmt; 1048 1049 fmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1050 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1051 1052 voodoo3_make_room(sc, 7); 1053 voodoo3_write32(sc, DSTFORMAT, fmt); 1054 voodoo3_write32(sc, DSTBASE, 0); 1055 voodoo3_write32(sc, COLORFORE, colour); 1056 voodoo3_write32(sc, COLORBACK, colour); 1057 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_FILLRECT | (ROP_COPY << 24)); 1058 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1059 voodoo3_write32(sc, LAUNCH_2D, x | (y << 16)); 1060 } 1061 1062 static void 1063 voodoofb_rectinvert(struct voodoofb_softc *sc, int x, int y, int width, 1064 int height) 1065 { 1066 uint32_t fmt; 1067 1068 fmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1069 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1070 1071 voodoo3_make_room(sc, 8); 1072 voodoo3_write32(sc, SRCBASE, 0); 1073 voodoo3_write32(sc, DSTBASE, 0); 1074 voodoo3_write32(sc, DSTFORMAT, fmt); 1075 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_FILLRECT | 1076 (ROP_INVERT << 24)); 1077 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1078 voodoo3_write32(sc, DSTXY, x | (y << 16)); 1079 voodoo3_write32(sc, LAUNCH_2D, x | (y << 16)); 1080 } 1081 1082 static void 1083 voodoofb_setup_mono(struct voodoofb_softc *sc, int xd, int yd, int width, 1084 int height, uint32_t fg, uint32_t bg) 1085 { 1086 uint32_t dfmt, sfmt = sc->sc_linebytes; 1087 1088 dfmt = sc->sc_linebytes | ((sc->sc_bits_per_pixel + 1089 ((sc->sc_bits_per_pixel == 8) ? 0 : 8)) << 13); 1090 1091 voodoo3_make_room(sc, 10); 1092 voodoo3_write32(sc, SRCFORMAT, sfmt); 1093 voodoo3_write32(sc, DSTFORMAT, dfmt); 1094 voodoo3_write32(sc, DSTBASE, 0); 1095 voodoo3_write32(sc, COLORFORE, fg); 1096 voodoo3_write32(sc, COLORBACK, bg); 1097 voodoo3_write32(sc, DSTSIZE, width | (height << 16)); 1098 voodoo3_write32(sc, DSTXY, xd | (yd << 16)); 1099 voodoo3_write32(sc, SRCXY, 0); 1100 voodoo3_write32(sc, COMMAND_2D, COMMAND_2D_H2S_BITBLT | 1101 (ROP_COPY << 24) | SST_2D_GO); 1102 1103 /* now feed the data into the chip */ 1104 } 1105 1106 static void 1107 voodoofb_feed_line(struct voodoofb_softc *sc, int count, uint8_t *data) 1108 { 1109 int i; 1110 uint32_t latch = 0, bork; 1111 int shift = 0; 1112 1113 voodoo3_make_room(sc, count); 1114 for (i = 0; i < count; i++) { 1115 bork = data[i]; 1116 latch |= (bork << shift); 1117 if (shift == 24) { 1118 voodoo3_write32(sc, LAUNCH_2D, latch); 1119 latch = 0; 1120 shift = 0; 1121 } else 1122 shift += 8; 1123 } 1124 if (shift != 24) 1125 voodoo3_write32(sc, LAUNCH_2D, latch); 1126 } 1127 1128 #if 0 1129 static int 1130 voodoofb_allocattr(void *cookie, int fg, int bg, int flags, long *attrp) 1131 { 1132 1133 return 0; 1134 } 1135 #endif 1136 1137 /* 1138 * wsdisplay_accessops 1139 */ 1140 1141 static int 1142 voodoofb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, 1143 struct lwp *l) 1144 { 1145 struct vcons_data *vd = v; 1146 struct voodoofb_softc *sc = vd->cookie; 1147 struct wsdisplay_fbinfo *wdf; 1148 struct vcons_screen *ms = vd->active; 1149 1150 switch (cmd) { 1151 case WSDISPLAYIO_GTYPE: 1152 *(u_int *)data = WSDISPLAY_TYPE_PCIMISC; 1153 return 0; 1154 1155 case WSDISPLAYIO_GINFO: 1156 wdf = (void *)data; 1157 wdf->height = ms->scr_ri.ri_height; 1158 wdf->width = ms->scr_ri.ri_width; 1159 wdf->depth = ms->scr_ri.ri_depth; 1160 wdf->cmsize = 256; 1161 return 0; 1162 1163 case WSDISPLAYIO_GETCMAP: 1164 return voodoofb_getcmap(sc, 1165 (struct wsdisplay_cmap *)data); 1166 1167 case WSDISPLAYIO_PUTCMAP: 1168 return voodoofb_putcmap(sc, 1169 (struct wsdisplay_cmap *)data); 1170 1171 /* PCI config read/write passthrough. */ 1172 case PCI_IOC_CFGREAD: 1173 case PCI_IOC_CFGWRITE: 1174 return pci_devioctl(sc->sc_pc, sc->sc_pcitag, 1175 cmd, data, flag, l); 1176 1177 case WSDISPLAYIO_GET_BUSID: 1178 return wsdisplayio_busid_pci(sc->sc_dev, sc->sc_pc, 1179 sc->sc_pcitag, data); 1180 1181 case WSDISPLAYIO_SMODE: { 1182 int new_mode = *(int*)data; 1183 if (new_mode != sc->sc_mode) { 1184 sc->sc_mode = new_mode; 1185 if (new_mode == WSDISPLAYIO_MODE_EMUL) { 1186 voodoofb_drm_map(sc); 1187 int i; 1188 1189 /* restore the palette */ 1190 for (i = 0; i < 256; i++) { 1191 voodoofb_putpalreg(sc, 1192 i, 1193 sc->sc_cmap_red[i], 1194 sc->sc_cmap_green[i], 1195 sc->sc_cmap_blue[i]); 1196 } 1197 1198 /* zap the glyph cache */ 1199 for (i = 0; i < 256; i++) { 1200 sc->sc_glyphs_defattr[i] = 0; 1201 sc->sc_glyphs_kernattr[i] = 0; 1202 } 1203 sc->sc_usedglyphs = 0; 1204 1205 voodoofb_clearscreen(sc); 1206 vcons_redraw_screen(ms); 1207 } else { 1208 voodoofb_drm_unmap(sc); 1209 } 1210 } 1211 } 1212 return 0; 1213 /* XXX WSDISPLAYIO_GET_EDID */ 1214 1215 case WSDISPLAYIO_GET_FBINFO: { 1216 struct wsdisplayio_fbinfo *fbi = data; 1217 return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); 1218 } 1219 } 1220 return EPASSTHROUGH; 1221 } 1222 1223 static paddr_t 1224 voodoofb_mmap(void *v, void *vs, off_t offset, int prot) 1225 { 1226 struct vcons_data *vd = v; 1227 struct voodoofb_softc *sc = vd->cookie; 1228 paddr_t pa; 1229 1230 /* 'regular' framebuffer mmap()ing */ 1231 if (sc->sc_mode == WSDISPLAYIO_MODE_DUMBFB) { 1232 if (offset < sc->sc_fbsize) { 1233 pa = bus_space_mmap(sc->sc_memt, sc->sc_fb, offset, 1234 prot, 1235 BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE); 1236 return pa; 1237 } 1238 } else if (sc->sc_mode == WSDISPLAYIO_MODE_MAPPED) { 1239 1240 if (kauth_authorize_machdep(kauth_cred_get(), 1241 KAUTH_MACHDEP_UNMANAGEDMEM, NULL, NULL, NULL, NULL) != 0) { 1242 aprint_error_dev(sc->sc_dev, "mmap() rejected.\n"); 1243 return -1; 1244 } 1245 1246 if ((offset >= 0xa0000) && 1247 (offset < 0xb0000)) { 1248 pa = bus_space_mmap(sc->sc_memt, 1249 sc->sc_fb, offset - 0xa0000, 1250 prot, BUS_SPACE_MAP_LINEAR); 1251 return pa; 1252 } 1253 1254 if ((offset >= sc->sc_fb) && 1255 (offset < (sc->sc_fb + sc->sc_fbsize))) { 1256 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1257 BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE); 1258 return pa; 1259 } 1260 1261 if ((offset >= sc->sc_regs) && (offset < (sc->sc_regs + 1262 sc->sc_regsize))) { 1263 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1264 BUS_SPACE_MAP_LINEAR); 1265 return pa; 1266 } 1267 1268 #ifdef PCI_MAGIC_IO_RANGE 1269 /* allow mapping of IO space */ 1270 if ((offset >= PCI_MAGIC_IO_RANGE) && 1271 (offset < PCI_MAGIC_IO_RANGE + 0x10000)) { 1272 pa = bus_space_mmap(sc->sc_iot, 1273 offset - PCI_MAGIC_IO_RANGE, 0, prot, 0); 1274 return pa; 1275 } 1276 #endif 1277 1278 #ifdef OFB_ALLOW_OTHERS 1279 if (offset >= 0x80000000) { 1280 pa = bus_space_mmap(sc->sc_memt, offset, 0, prot, 1281 BUS_SPACE_MAP_LINEAR); 1282 return pa; 1283 } 1284 #endif 1285 } 1286 return -1; 1287 } 1288 1289 static void 1290 voodoofb_init_screen(void *cookie, struct vcons_screen *scr, 1291 int existing, long *defattr) 1292 { 1293 struct voodoofb_softc *sc = cookie; 1294 struct rasops_info *ri = &scr->scr_ri; 1295 1296 ri->ri_depth = sc->sc_bits_per_pixel; 1297 ri->ri_width = sc->sc_width; 1298 ri->ri_height = sc->sc_height; 1299 ri->ri_stride = sc->sc_linebytes; 1300 ri->ri_flg = RI_CENTER | RI_8BIT_IS_RGB | RI_ENABLE_ALPHA; 1301 1302 rasops_init(ri, 0, 0); 1303 ri->ri_caps = WSSCREEN_WSCOLORS; 1304 1305 rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, 1306 sc->sc_width / ri->ri_font->fontwidth); 1307 1308 ri->ri_hw = scr; 1309 ri->ri_ops.copyrows = voodoofb_copyrows; 1310 ri->ri_ops.copycols = voodoofb_copycols; 1311 ri->ri_ops.eraserows = voodoofb_eraserows; 1312 ri->ri_ops.erasecols = voodoofb_erasecols; 1313 ri->ri_ops.cursor = voodoofb_cursor; 1314 if (FONT_IS_ALPHA(ri->ri_font)) { 1315 ri->ri_ops.putchar = voodoofb_putchar_aa; 1316 ri->ri_ops.allocattr(ri, WS_DEFAULT_FG, WS_DEFAULT_BG, 1317 0, &sc->sc_defattr); 1318 sc->sc_kernattr = (WS_KERNEL_FG << 24) | (WS_KERNEL_BG << 16); 1319 voodoofb_init_glyphcache(sc, ri); 1320 } else { 1321 ri->ri_ops.putchar = voodoofb_putchar; 1322 } 1323 } 1324 1325 #if 0 1326 int 1327 voodoofb_load_font(void *v, void *cookie, struct wsdisplay_font *data) 1328 { 1329 1330 return 0; 1331 } 1332 #endif 1333 1334 #ifdef VOODOOFB_ENABLE_INTR 1335 static int 1336 voodoofb_intr(void *arg) 1337 { 1338 struct voodoofb_softc *sc = arg; 1339 1340 voodoo3_write32(sc, V3_STATUS, 0); /* clear interrupts */ 1341 return 1; 1342 } 1343 #endif 1344 1345 /* video mode stuff */ 1346 1347 #define REFFREQ 14318 /* .18 */ 1348 1349 #define ABS(a) ((a < 0) ? -a : a) 1350 1351 static int 1352 voodoofb_calc_pll(int freq, int *f_out, int isBanshee) 1353 { 1354 int m, n, k, best_m, best_n, best_k, f_cur, best_error; 1355 int minm, maxm; 1356 1357 best_error = freq; 1358 best_n = best_m = best_k = 0; 1359 1360 if (isBanshee) { 1361 minm = 24; 1362 maxm = 24; 1363 } else { 1364 minm = 1; 1365 maxm = 57; 1366 /* This used to be 64, alas it seems the last 8 (funny that ?) 1367 * values cause jittering at lower resolutions. I've not done 1368 * any calculations to what the adjustment affects clock ranges, 1369 * but I can still run at 1600x1200@75Hz */ 1370 } 1371 for (n = 1; n < 256; n++) { 1372 f_cur = REFFREQ * (n + 2); 1373 if (f_cur < freq) { 1374 f_cur = f_cur / 3; 1375 if (freq - f_cur < best_error) { 1376 best_error = freq - f_cur; 1377 best_n = n; 1378 best_m = 1; 1379 best_k = 0; 1380 continue; 1381 } 1382 } 1383 for (m = minm; m < maxm; m++) { 1384 for (k = 0; k < 4; k++) { 1385 f_cur = REFFREQ * (n + 2) / (m + 2) / (1 << k); 1386 if (ABS(f_cur - freq) < best_error) { 1387 best_error = ABS(f_cur - freq); 1388 best_n = n; 1389 best_m = m; 1390 best_k = k; 1391 } 1392 } 1393 } 1394 } 1395 n = best_n; 1396 m = best_m; 1397 k = best_k; 1398 *f_out = REFFREQ * (n + 2) / (m + 2) / (1 << k); 1399 return ( n << 8) | (m << 2) | k; 1400 } 1401 1402 static void 1403 voodoofb_setup_monitor(struct voodoofb_softc *sc, const struct videomode *vm) 1404 { 1405 struct voodoo_regs mod; 1406 struct voodoo_regs *mode; 1407 uint32_t horizontal_display_end, horizontal_sync_start, 1408 horizontal_sync_end, horizontal_total, 1409 horizontal_blanking_start, horizontal_blanking_end; 1410 1411 uint32_t vertical_display_enable_end, vertical_sync_start, 1412 vertical_sync_end, vertical_total, vertical_blanking_start, 1413 vertical_blanking_end; 1414 1415 uint32_t wd; // CRTC offset 1416 1417 int i; 1418 1419 uint8_t misc; 1420 1421 memset(&mod, 0, sizeof(mod)); 1422 1423 mode = &mod; 1424 1425 wd = (vm->hdisplay >> 3) - 1; 1426 horizontal_display_end = (vm->hdisplay >> 3) - 1; 1427 horizontal_sync_start = (vm->hsync_start >> 3) - 1; 1428 horizontal_sync_end = (vm->hsync_end >> 3) - 1; 1429 horizontal_total = (vm->htotal >> 3) - 1; 1430 horizontal_blanking_start = horizontal_display_end; 1431 horizontal_blanking_end = horizontal_total; 1432 1433 vertical_display_enable_end = vm->vdisplay - 1; 1434 vertical_sync_start = vm->vsync_start; // - 1; 1435 vertical_sync_end = vm->vsync_end; // - 1; 1436 vertical_total = vm->vtotal - 2; 1437 vertical_blanking_start = vertical_display_enable_end; 1438 vertical_blanking_end = vertical_total; 1439 1440 #if 0 1441 misc = 0x0f | 1442 (vm->hdisplay < 400 ? 0xa0 : 1443 vm->hdisplay < 480 ? 0x60 : 1444 vm->hdisplay < 768 ? 0xe0 : 0x20); 1445 #else 1446 misc = 0x2f; 1447 if (vm->flags & VID_NHSYNC) 1448 misc |= HSYNC_NEG; 1449 if (vm->flags & VID_NVSYNC) 1450 misc |= VSYNC_NEG; 1451 #ifdef VOODOOFB_DEBUG 1452 printf("misc: %02x\n", misc); 1453 #endif 1454 #endif 1455 mode->vr_seq[0] = 3; 1456 mode->vr_seq[1] = 1; 1457 mode->vr_seq[2] = 8; 1458 mode->vr_seq[3] = 0; 1459 mode->vr_seq[4] = 6; 1460 1461 /* crtc regs start */ 1462 mode->vr_crtc[0] = horizontal_total - 4; 1463 mode->vr_crtc[1] = horizontal_display_end; 1464 mode->vr_crtc[2] = horizontal_blanking_start; 1465 mode->vr_crtc[3] = 0x80 | (horizontal_blanking_end & 0x1f); 1466 mode->vr_crtc[4] = horizontal_sync_start; 1467 1468 mode->vr_crtc[5] = ((horizontal_blanking_end & 0x20) << 2) | 1469 (horizontal_sync_end & 0x1f); 1470 mode->vr_crtc[6] = vertical_total; 1471 mode->vr_crtc[7] = ((vertical_sync_start & 0x200) >> 2) | 1472 ((vertical_display_enable_end & 0x200) >> 3) | 1473 ((vertical_total & 0x200) >> 4) | 1474 0x10 | 1475 ((vertical_blanking_start & 0x100) >> 5) | 1476 ((vertical_sync_start & 0x100) >> 6) | 1477 ((vertical_display_enable_end & 0x100) >> 7) | 1478 ((vertical_total & 0x100) >> 8); 1479 1480 mode->vr_crtc[8] = 0; 1481 mode->vr_crtc[9] = 0x40 | 1482 ((vertical_blanking_start & 0x200) >> 4); 1483 1484 mode->vr_crtc[10] = 0; 1485 mode->vr_crtc[11] = 0; 1486 mode->vr_crtc[12] = 0; 1487 mode->vr_crtc[13] = 0; 1488 mode->vr_crtc[14] = 0; 1489 mode->vr_crtc[15] = 0; 1490 1491 mode->vr_crtc[16] = vertical_sync_start; 1492 mode->vr_crtc[17] = (vertical_sync_end & 0x0f) | 0x20; 1493 mode->vr_crtc[18] = vertical_display_enable_end; 1494 mode->vr_crtc[19] = wd; // CRTC offset 1495 mode->vr_crtc[20] = 0; 1496 mode->vr_crtc[21] = vertical_blanking_start; 1497 mode->vr_crtc[22] = vertical_blanking_end + 1; 1498 mode->vr_crtc[23] = 128; 1499 mode->vr_crtc[24] = 255; 1500 1501 /* overflow registers */ 1502 mode->vr_crtc[CRTC_HDISP_EXT] = 1503 (horizontal_total&0x100) >> 8 | 1504 (horizontal_display_end & 0x100) >> 6 | 1505 (horizontal_blanking_start & 0x100) >> 4 | 1506 (horizontal_blanking_end & 0x40) >> 1 | 1507 (horizontal_sync_start & 0x100) >> 2 | 1508 (horizontal_sync_end & 0x20) << 2; 1509 1510 mode->vr_crtc[CRTC_VDISP_EXT] = 1511 (vertical_total & 0x400) >> 10 | 1512 (vertical_display_enable_end & 0x400) >> 8 | /* the manual is contradictory here */ 1513 (vertical_blanking_start & 0x400) >> 6 | 1514 (vertical_blanking_end & 0x400) >> 4; 1515 1516 /* attr regs start */ 1517 mode->vr_attr[0] = 0; 1518 mode->vr_attr[1] = 0; 1519 mode->vr_attr[2] = 0; 1520 mode->vr_attr[3] = 0; 1521 mode->vr_attr[4] = 0; 1522 mode->vr_attr[5] = 0; 1523 mode->vr_attr[6] = 0; 1524 mode->vr_attr[7] = 0; 1525 mode->vr_attr[8] = 0; 1526 mode->vr_attr[9] = 0; 1527 mode->vr_attr[10] = 0; 1528 mode->vr_attr[11] = 0; 1529 mode->vr_attr[12] = 0; 1530 mode->vr_attr[13] = 0; 1531 mode->vr_attr[14] = 0; 1532 mode->vr_attr[15] = 0; 1533 mode->vr_attr[16] = 1; 1534 mode->vr_attr[17] = 0; 1535 mode->vr_attr[18] = 15; 1536 mode->vr_attr[19] = 0; 1537 /* attr regs end */ 1538 1539 /* graph regs start */ 1540 mode->vr_graph[0] = 159; 1541 mode->vr_graph[1] = 127; 1542 mode->vr_graph[2] = 127; 1543 mode->vr_graph[3] = 131; 1544 mode->vr_graph[4] = 130; 1545 mode->vr_graph[5] = 142; 1546 mode->vr_graph[6] = 30; 1547 mode->vr_graph[7] = 245; 1548 mode->vr_graph[8] = 0; 1549 1550 vga_outb(sc, MISC_W, misc | 0x01); 1551 1552 for(i = 0; i < 5; i++) 1553 voodoo3_write_seq(sc, i, mode->vr_seq[i]); 1554 for (i = 0; i < CRTC_PCI_READBACK; i ++) 1555 voodoo3_write_crtc(sc, i, mode->vr_crtc[i]); 1556 for (i = 0; i < 0x14; i ++) 1557 voodoo3_write_attr(sc, i, mode->vr_attr[i]); 1558 for (i = 0; i < 0x09; i ++) 1559 voodoo3_write_gra(sc, i, mode->vr_graph[i]); 1560 } 1561 1562 static void 1563 voodoofb_set_videomode(struct voodoofb_softc *sc, 1564 const struct videomode *vm) 1565 { 1566 uint32_t miscinit0 = 0; 1567 int vidpll, fout; 1568 uint32_t vidproc = VIDPROCDEFAULT; 1569 uint32_t bpp = 1; /* for now */ 1570 uint32_t bytes_per_row = vm->hdisplay * bpp; 1571 1572 sc->sc_bits_per_pixel = bpp << 3; 1573 sc->sc_width = vm->hdisplay; 1574 sc->sc_height = vm->vdisplay; 1575 sc->sc_linebytes = bytes_per_row; 1576 1577 voodoofb_setup_monitor(sc, vm); 1578 1579 vidproc &= ~(0x1c0000); /* clear bits 18 to 20, bpp in vidproccfg */ 1580 /* enable bits 18 to 20 to the required bpp */ 1581 vidproc |= ((bpp - 1) << VIDCFG_PIXFMT_SHIFT); 1582 1583 vidpll = voodoofb_calc_pll(vm->dot_clock, &fout, 0); 1584 1585 #ifdef VOODOOFB_DEBUG 1586 uint32_t vp; 1587 vp = voodoo3_read32(sc, VIDPROCCFG); 1588 printf("old vidproc: %08x\n", vp); 1589 printf("pll: %08x %d\n", vidpll, fout); 1590 #endif 1591 /* bit 10 of vidproccfg, is enabled or disabled as needed */ 1592 switch (bpp) { 1593 case 1: 1594 /* 1595 * bit 10 off for palettized modes only, off means 1596 * palette is used 1597 */ 1598 vidproc &= ~(1 << 10); 1599 break; 1600 #if 0 1601 case 2: 1602 #if __POWERPC__ 1603 miscinit0 = 0xc0000000; 1604 #endif 1605 /* bypass palette for 16bit modes */ 1606 vidproc |= (1 << 10); 1607 break; 1608 case 4: 1609 #if __POWERPC__ 1610 miscinit0 = 0x40000000; 1611 #endif 1612 vidproc |= (1 << 10); /* Same for 32bit modes */ 1613 break; 1614 #endif 1615 default: 1616 printf("We support only 8 bit for now\n"); 1617 return; 1618 } 1619 1620 voodoofb_wait_idle(sc); 1621 1622 voodoo3_write32(sc, MISCINIT1, voodoo3_read32(sc, MISCINIT1) | 0x01); 1623 1624 voodoo3_make_room(sc, 4); 1625 voodoo3_write32(sc, VGAINIT0, 4928); 1626 voodoo3_write32(sc, DACMODE, 0); 1627 voodoo3_write32(sc, VIDDESKSTRIDE, bytes_per_row); 1628 voodoo3_write32(sc, PLLCTRL0, vidpll); 1629 1630 voodoo3_make_room(sc, 5); 1631 voodoo3_write32(sc, VIDSCREENSIZE, sc->sc_width | 1632 (sc->sc_height << 12)); 1633 voodoo3_write32(sc, VIDDESKSTART, 0); 1634 1635 vidproc &= ~VIDCFG_HWCURSOR_ENABLE; 1636 voodoo3_write32(sc, VIDPROCCFG, vidproc); 1637 1638 voodoo3_write32(sc, VGAINIT1, 0); 1639 voodoo3_write32(sc, MISCINIT0, miscinit0); 1640 #ifdef VOODOOFB_DEBUG 1641 printf("vidproc: %08x\n", vidproc); 1642 #endif 1643 voodoo3_make_room(sc, 8); 1644 voodoo3_write32(sc, SRCBASE, 0); 1645 voodoo3_write32(sc, DSTBASE, 0); 1646 voodoo3_write32(sc, COMMANDEXTRA_2D, 0); 1647 voodoo3_write32(sc, CLIP0MIN, 0); 1648 voodoo3_write32(sc, CLIP0MAX, 0x0fff0fff); 1649 voodoo3_write32(sc, CLIP1MIN, 0); 1650 voodoo3_write32(sc, CLIP1MAX, 0x0fff0fff); 1651 voodoo3_write32(sc, SRCXY, 0); 1652 voodoofb_wait_idle(sc); 1653 printf("%s: switched to %dx%d, %d bit\n", device_xname(sc->sc_dev), 1654 sc->sc_width, sc->sc_height, sc->sc_bits_per_pixel); 1655 sc->sc_numglyphs = 0; /* invalidate the glyph cache */ 1656 } 1657 1658 static void 1659 voodoofb_init(struct voodoofb_softc *sc) 1660 { 1661 /* XXX */ 1662 uint32_t vgainit0 = 0; 1663 uint32_t vidcfg = 0; 1664 1665 #ifdef VOODOOFB_DEBUG 1666 printf("initializing engine..."); 1667 #endif 1668 vgainit0 = voodoo3_read32(sc, VGAINIT0); 1669 #ifdef VOODOOFB_DEBUG 1670 printf("vga: %08x", vgainit0); 1671 #endif 1672 vgainit0 |= 1673 VGAINIT0_8BIT_DAC | 1674 VGAINIT0_EXT_ENABLE | 1675 VGAINIT0_WAKEUP_3C3 | 1676 VGAINIT0_ALT_READBACK | 1677 VGAINIT0_EXTSHIFTOUT; 1678 1679 vidcfg = voodoo3_read32(sc, VIDPROCCFG); 1680 #ifdef VOODOOFB_DEBUG 1681 printf(" vidcfg: %08x\n", vidcfg); 1682 #endif 1683 vidcfg |= 1684 VIDCFG_VIDPROC_ENABLE | 1685 VIDCFG_DESK_ENABLE; 1686 vidcfg &= ~VIDCFG_HWCURSOR_ENABLE; 1687 1688 voodoo3_make_room(sc, 2); 1689 1690 voodoo3_write32(sc, VGAINIT0, vgainit0); 1691 voodoo3_write32(sc, VIDPROCCFG, vidcfg); 1692 1693 voodoo3_make_room(sc, 8); 1694 voodoo3_write32(sc, SRCBASE, 0); 1695 voodoo3_write32(sc, DSTBASE, 0); 1696 voodoo3_write32(sc, COMMANDEXTRA_2D, 0); 1697 voodoo3_write32(sc, CLIP0MIN, 0); 1698 voodoo3_write32(sc, CLIP0MAX, 0x1fff1fff); 1699 voodoo3_write32(sc, CLIP1MIN, 0); 1700 voodoo3_write32(sc, CLIP1MAX, 0x1fff1fff); 1701 voodoo3_write32(sc, SRCXY, 0); 1702 1703 voodoofb_wait_idle(sc); 1704 } 1705 1706 #define MAX_HRES 1700 /* 1707 * XXX in theory we can go higher but I 1708 * couldn't get anything above 1680 x 1200 1709 * to work, so until I find out why, it's 1710 * disabled so people won't end up with a 1711 * blank screen 1712 */ 1713 #define MODE_IS_VALID(m, mclk) (((m)->dot_clock <= (mclk)) && \ 1714 ((m)->hdisplay < MAX_HRES)) 1715 static void 1716 voodoofb_setup_i2c(struct voodoofb_softc *sc) 1717 { 1718 int i; 1719 1720 /* Fill in the i2c tag */ 1721 iic_tag_init(&sc->sc_i2c); 1722 sc->sc_i2c.ic_cookie = sc; 1723 sc->sc_i2c.ic_send_start = voodoofb_i2c_send_start; 1724 sc->sc_i2c.ic_send_stop = voodoofb_i2c_send_stop; 1725 sc->sc_i2c.ic_initiate_xfer = voodoofb_i2c_initiate_xfer; 1726 sc->sc_i2c.ic_read_byte = voodoofb_i2c_read_byte; 1727 sc->sc_i2c.ic_write_byte = voodoofb_i2c_write_byte; 1728 1729 sc->sc_i2creg = voodoo3_read32(sc, VIDSERPARPORT); 1730 #ifdef VOODOOFB_DEBUG 1731 printf("data: %08x\n", sc->sc_i2creg); 1732 #endif 1733 sc->sc_i2creg |= VSP_ENABLE_IIC0; 1734 sc->sc_i2creg &= ~(VSP_SDA0_OUT | VSP_SCL0_OUT); 1735 voodoo3_write32(sc, VIDSERPARPORT, sc->sc_i2creg); 1736 1737 /* zero out the EDID buffer */ 1738 memset(sc->sc_edid_data, 0, 128); 1739 1740 /* Some monitors don't respond first time */ 1741 i = 0; 1742 while (sc->sc_edid_data[1] == 0 && i++ < 3) 1743 ddc_read_edid(&sc->sc_i2c, sc->sc_edid_data, 128); 1744 if (i < 3) { 1745 if (edid_parse(sc->sc_edid_data, &sc->sc_edid_info) != -1) { 1746 #ifdef VOODOOFB_DEBUG 1747 edid_print(&sc->sc_edid_info); 1748 #endif 1749 /* 1750 * Now pick a mode. 1751 * How do we know our max. pixel clock? 1752 * All Voodoo3 should support at least 250MHz. 1753 * All Voodoo3 I've seen so far have at least 8MB 1754 * which we're not going to exhaust either in 8bit. 1755 */ 1756 if ((sc->sc_edid_info.edid_preferred_mode != NULL)) { 1757 struct videomode *m = 1758 sc->sc_edid_info.edid_preferred_mode; 1759 if (MODE_IS_VALID(m, sc->sc_max_clock)) { 1760 sc->sc_videomode = m; 1761 } else { 1762 aprint_error_dev(sc->sc_dev, 1763 "unable to use preferred mode\n"); 1764 } 1765 } 1766 /* 1767 * if we can't use the preferred mode go look for the 1768 * best one we can support 1769 */ 1770 if (sc->sc_videomode == NULL) { 1771 int n = 0; 1772 struct videomode *m = 1773 sc->sc_edid_info.edid_modes; 1774 1775 sort_modes(sc->sc_edid_info.edid_modes, 1776 &sc->sc_edid_info.edid_preferred_mode, 1777 sc->sc_edid_info.edid_nmodes); 1778 while ((sc->sc_videomode == NULL) && 1779 (n < sc->sc_edid_info.edid_nmodes)) { 1780 if (MODE_IS_VALID(&m[n], 1781 sc->sc_max_clock)) { 1782 sc->sc_videomode = &m[n]; 1783 } 1784 n++; 1785 } 1786 } 1787 } 1788 } 1789 } 1790 1791 /* I2C bitbanging */ 1792 static void voodoofb_i2cbb_set_bits(void *cookie, uint32_t bits) 1793 { 1794 struct voodoofb_softc *sc = cookie; 1795 uint32_t out; 1796 1797 out = bits >> 2; /* bitmasks match the IN bits */ 1798 1799 voodoo3_write32(sc, VIDSERPARPORT, sc->sc_i2creg | out); 1800 } 1801 1802 static void voodoofb_i2cbb_set_dir(void *cookie, uint32_t dir) 1803 { 1804 /* Nothing to do */ 1805 } 1806 1807 static uint32_t voodoofb_i2cbb_read(void *cookie) 1808 { 1809 struct voodoofb_softc *sc = cookie; 1810 uint32_t bits; 1811 1812 bits = voodoo3_read32(sc, VIDSERPARPORT); 1813 1814 return bits; 1815 } 1816 1817 /* higher level I2C stuff */ 1818 static int 1819 voodoofb_i2c_send_start(void *cookie, int flags) 1820 { 1821 return (i2c_bitbang_send_start(cookie, flags, &voodoofb_i2cbb_ops)); 1822 } 1823 1824 static int 1825 voodoofb_i2c_send_stop(void *cookie, int flags) 1826 { 1827 1828 return (i2c_bitbang_send_stop(cookie, flags, &voodoofb_i2cbb_ops)); 1829 } 1830 1831 static int 1832 voodoofb_i2c_initiate_xfer(void *cookie, i2c_addr_t addr, int flags) 1833 { 1834 1835 return (i2c_bitbang_initiate_xfer(cookie, addr, flags, 1836 &voodoofb_i2cbb_ops)); 1837 } 1838 1839 static int 1840 voodoofb_i2c_read_byte(void *cookie, uint8_t *valp, int flags) 1841 { 1842 return (i2c_bitbang_read_byte(cookie, valp, flags, &voodoofb_i2cbb_ops)); 1843 } 1844 1845 static int 1846 voodoofb_i2c_write_byte(void *cookie, uint8_t val, int flags) 1847 { 1848 return (i2c_bitbang_write_byte(cookie, val, flags, &voodoofb_i2cbb_ops)); 1849 } 1850 1851 /* glyph cache */ 1852 static void 1853 voodoofb_init_glyphcache(struct voodoofb_softc *sc, struct rasops_info *ri) 1854 { 1855 int bufsize, i; 1856 1857 if (sc->sc_numglyphs != 0) { 1858 /* re-initialize */ 1859 if (ri->ri_font == sc->sc_font) { 1860 /* nothing to do, keep using the same cache */ 1861 return; 1862 } 1863 } 1864 sc->sc_cache = (ri->ri_width * ri->ri_stride + 3) & 0xfffffffc; 1865 bufsize = sc->sc_memsize - sc->sc_cache; 1866 sc->sc_numglyphs = bufsize / ri->ri_fontscale; 1867 sc->sc_usedglyphs = 0; 1868 for (i = 0; i < 256; i++) { 1869 sc->sc_glyphs_kernattr[i] = 0; 1870 sc->sc_glyphs_defattr[i] = 0; 1871 } 1872 sc->sc_fmt = ri->ri_font->fontwidth | FMT_8BIT; 1873 } 1874