Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/powerpc/ofw/ofw_syscons.c
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2003 Peter Grehan 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 AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/module.h> 35 #include <sys/bus.h> 36 #include <sys/kernel.h> 37 #include <sys/sysctl.h> 38 #include <sys/limits.h> 39 #include <sys/conf.h> 40 #include <sys/cons.h> 41 #include <sys/proc.h> 42 #include <sys/fcntl.h> 43 #include <sys/malloc.h> 44 #include <sys/fbio.h> 45 #include <sys/consio.h> 46 47 #include <machine/bus.h> 48 #include <machine/sc_machdep.h> 49 #include <machine/vm.h> 50 51 #include <sys/rman.h> 52 53 #include <dev/fb/fbreg.h> 54 #include <dev/syscons/syscons.h> 55 56 #include <dev/ofw/openfirm.h> 57 #include <dev/ofw/ofw_bus.h> 58 #include <dev/ofw/ofw_pci.h> 59 #include <powerpc/ofw/ofw_syscons.h> 60 61 static int ofwfb_ignore_mmap_checks = 1; 62 static int ofwfb_reset_on_switch = 1; 63 static SYSCTL_NODE(_hw, OID_AUTO, ofwfb, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 64 "ofwfb"); 65 SYSCTL_INT(_hw_ofwfb, OID_AUTO, relax_mmap, CTLFLAG_RW, 66 &ofwfb_ignore_mmap_checks, 0, "relaxed mmap bounds checking"); 67 SYSCTL_INT(_hw_ofwfb, OID_AUTO, reset_on_mode_switch, CTLFLAG_RW, 68 &ofwfb_reset_on_switch, 0, "reset the framebuffer driver on mode switch"); 69 70 extern u_char dflt_font_16[]; 71 extern u_char dflt_font_14[]; 72 extern u_char dflt_font_8[]; 73 74 static int ofwfb_configure(int flags); 75 76 static vi_probe_t ofwfb_probe; 77 static vi_init_t ofwfb_init; 78 static vi_get_info_t ofwfb_get_info; 79 static vi_query_mode_t ofwfb_query_mode; 80 static vi_set_mode_t ofwfb_set_mode; 81 static vi_save_font_t ofwfb_save_font; 82 static vi_load_font_t ofwfb_load_font; 83 static vi_show_font_t ofwfb_show_font; 84 static vi_save_palette_t ofwfb_save_palette; 85 static vi_load_palette_t ofwfb_load_palette; 86 static vi_set_border_t ofwfb_set_border; 87 static vi_save_state_t ofwfb_save_state; 88 static vi_load_state_t ofwfb_load_state; 89 static vi_set_win_org_t ofwfb_set_win_org; 90 static vi_read_hw_cursor_t ofwfb_read_hw_cursor; 91 static vi_set_hw_cursor_t ofwfb_set_hw_cursor; 92 static vi_set_hw_cursor_shape_t ofwfb_set_hw_cursor_shape; 93 static vi_blank_display_t ofwfb_blank_display; 94 static vi_mmap_t ofwfb_mmap; 95 static vi_ioctl_t ofwfb_ioctl; 96 static vi_clear_t ofwfb_clear; 97 static vi_fill_rect_t ofwfb_fill_rect; 98 static vi_bitblt_t ofwfb_bitblt; 99 static vi_diag_t ofwfb_diag; 100 static vi_save_cursor_palette_t ofwfb_save_cursor_palette; 101 static vi_load_cursor_palette_t ofwfb_load_cursor_palette; 102 static vi_copy_t ofwfb_copy; 103 static vi_putp_t ofwfb_putp; 104 static vi_putc_t ofwfb_putc; 105 static vi_puts_t ofwfb_puts; 106 static vi_putm_t ofwfb_putm; 107 108 static video_switch_t ofwfbvidsw = { 109 .probe = ofwfb_probe, 110 .init = ofwfb_init, 111 .get_info = ofwfb_get_info, 112 .query_mode = ofwfb_query_mode, 113 .set_mode = ofwfb_set_mode, 114 .save_font = ofwfb_save_font, 115 .load_font = ofwfb_load_font, 116 .show_font = ofwfb_show_font, 117 .save_palette = ofwfb_save_palette, 118 .load_palette = ofwfb_load_palette, 119 .set_border = ofwfb_set_border, 120 .save_state = ofwfb_save_state, 121 .load_state = ofwfb_load_state, 122 .set_win_org = ofwfb_set_win_org, 123 .read_hw_cursor = ofwfb_read_hw_cursor, 124 .set_hw_cursor = ofwfb_set_hw_cursor, 125 .set_hw_cursor_shape = ofwfb_set_hw_cursor_shape, 126 .blank_display = ofwfb_blank_display, 127 .mmap = ofwfb_mmap, 128 .ioctl = ofwfb_ioctl, 129 .clear = ofwfb_clear, 130 .fill_rect = ofwfb_fill_rect, 131 .bitblt = ofwfb_bitblt, 132 .diag = ofwfb_diag, 133 .save_cursor_palette = ofwfb_save_cursor_palette, 134 .load_cursor_palette = ofwfb_load_cursor_palette, 135 .copy = ofwfb_copy, 136 .putp = ofwfb_putp, 137 .putc = ofwfb_putc, 138 .puts = ofwfb_puts, 139 .putm = ofwfb_putm, 140 }; 141 142 /* 143 * bitmap depth-specific routines 144 */ 145 static vi_blank_display_t ofwfb_blank_display8; 146 static vi_putc_t ofwfb_putc8; 147 static vi_putm_t ofwfb_putm8; 148 static vi_set_border_t ofwfb_set_border8; 149 150 static vi_blank_display_t ofwfb_blank_display32; 151 static vi_putc_t ofwfb_putc32; 152 static vi_putm_t ofwfb_putm32; 153 static vi_set_border_t ofwfb_set_border32; 154 155 VIDEO_DRIVER(ofwfb, ofwfbvidsw, ofwfb_configure); 156 157 extern sc_rndr_sw_t txtrndrsw; 158 RENDERER(ofwfb, 0, txtrndrsw, gfb_set); 159 160 RENDERER_MODULE(ofwfb, gfb_set); 161 162 /* 163 * Define the iso6429-1983 colormap 164 */ 165 static struct { 166 uint8_t red; 167 uint8_t green; 168 uint8_t blue; 169 } ofwfb_cmap[16] = { /* # R G B Color */ 170 /* - - - - ----- */ 171 { 0x00, 0x00, 0x00 }, /* 0 0 0 0 Black */ 172 { 0x00, 0x00, 0xaa }, /* 1 0 0 2/3 Blue */ 173 { 0x00, 0xaa, 0x00 }, /* 2 0 2/3 0 Green */ 174 { 0x00, 0xaa, 0xaa }, /* 3 0 2/3 2/3 Cyan */ 175 { 0xaa, 0x00, 0x00 }, /* 4 2/3 0 0 Red */ 176 { 0xaa, 0x00, 0xaa }, /* 5 2/3 0 2/3 Magenta */ 177 { 0xaa, 0x55, 0x00 }, /* 6 2/3 1/3 0 Brown */ 178 { 0xaa, 0xaa, 0xaa }, /* 7 2/3 2/3 2/3 White */ 179 { 0x55, 0x55, 0x55 }, /* 8 1/3 1/3 1/3 Gray */ 180 { 0x55, 0x55, 0xff }, /* 9 1/3 1/3 1 Bright Blue */ 181 { 0x55, 0xff, 0x55 }, /* 10 1/3 1 1/3 Bright Green */ 182 { 0x55, 0xff, 0xff }, /* 11 1/3 1 1 Bright Cyan */ 183 { 0xff, 0x55, 0x55 }, /* 12 1 1/3 1/3 Bright Red */ 184 { 0xff, 0x55, 0xff }, /* 13 1 1/3 1 Bright Magenta */ 185 { 0xff, 0xff, 0x80 }, /* 14 1 1 1/3 Bright Yellow */ 186 { 0xff, 0xff, 0xff } /* 15 1 1 1 Bright White */ 187 }; 188 189 #define TODO printf("%s: unimplemented\n", __func__) 190 191 static u_int16_t ofwfb_static_window[ROW*COL]; 192 193 static struct ofwfb_softc ofwfb_softc; 194 195 static __inline int 196 ofwfb_background(uint8_t attr) 197 { 198 return (attr >> 4); 199 } 200 201 static __inline int 202 ofwfb_foreground(uint8_t attr) 203 { 204 return (attr & 0x0f); 205 } 206 207 static u_int 208 ofwfb_pix32(struct ofwfb_softc *sc, int attr) 209 { 210 u_int retval; 211 212 if (sc->sc_tag == &bs_le_tag) 213 retval = (ofwfb_cmap[attr].red << 16) | 214 (ofwfb_cmap[attr].green << 8) | 215 ofwfb_cmap[attr].blue; 216 else 217 retval = (ofwfb_cmap[attr].blue << 16) | 218 (ofwfb_cmap[attr].green << 8) | 219 ofwfb_cmap[attr].red; 220 221 return (retval); 222 } 223 224 static int 225 ofwfb_configure(int flags) 226 { 227 struct ofwfb_softc *sc; 228 phandle_t chosen; 229 ihandle_t stdout; 230 phandle_t node; 231 uint32_t fb_phys; 232 int depth; 233 int disable; 234 int len; 235 int i; 236 char type[16]; 237 static int done = 0; 238 239 disable = 0; 240 TUNABLE_INT_FETCH("hw.syscons.disable", &disable); 241 if (disable != 0) 242 return (0); 243 244 if (done != 0) 245 return (0); 246 done = 1; 247 248 sc = &ofwfb_softc; 249 250 chosen = OF_finddevice("/chosen"); 251 OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)); 252 node = OF_instance_to_package(stdout); 253 if (node == -1) { 254 /* 255 * The "/chosen/stdout" does not exist try 256 * using "screen" directly. 257 */ 258 node = OF_finddevice("screen"); 259 } 260 OF_getprop(node, "device_type", type, sizeof(type)); 261 if (strcmp(type, "display") != 0) 262 return (0); 263 264 /* Only support 8 and 32-bit framebuffers */ 265 OF_getprop(node, "depth", &depth, sizeof(depth)); 266 if (depth == 8) { 267 sc->sc_blank = ofwfb_blank_display8; 268 sc->sc_putc = ofwfb_putc8; 269 sc->sc_putm = ofwfb_putm8; 270 sc->sc_set_border = ofwfb_set_border8; 271 } else if (depth == 32) { 272 sc->sc_blank = ofwfb_blank_display32; 273 sc->sc_putc = ofwfb_putc32; 274 sc->sc_putm = ofwfb_putm32; 275 sc->sc_set_border = ofwfb_set_border32; 276 } else 277 return (0); 278 279 if (OF_getproplen(node, "height") != sizeof(sc->sc_height) || 280 OF_getproplen(node, "width") != sizeof(sc->sc_width) || 281 OF_getproplen(node, "linebytes") != sizeof(sc->sc_stride)) 282 return (0); 283 284 sc->sc_depth = depth; 285 sc->sc_node = node; 286 sc->sc_console = 1; 287 OF_getprop(node, "height", &sc->sc_height, sizeof(sc->sc_height)); 288 OF_getprop(node, "width", &sc->sc_width, sizeof(sc->sc_width)); 289 OF_getprop(node, "linebytes", &sc->sc_stride, sizeof(sc->sc_stride)); 290 291 /* 292 * Get the PCI addresses of the adapter. The node may be the 293 * child of the PCI device: in that case, try the parent for 294 * the assigned-addresses property. 295 */ 296 len = OF_getprop(node, "assigned-addresses", sc->sc_pciaddrs, 297 sizeof(sc->sc_pciaddrs)); 298 if (len == -1) { 299 len = OF_getprop(OF_parent(node), "assigned-addresses", 300 sc->sc_pciaddrs, sizeof(sc->sc_pciaddrs)); 301 } 302 if (len == -1) 303 len = 0; 304 sc->sc_num_pciaddrs = len / sizeof(struct ofw_pci_register); 305 306 /* 307 * Grab the physical address of the framebuffer, and then map it 308 * into our memory space. If the MMU is not yet up, it will be 309 * remapped for us when relocation turns on. 310 * 311 * XXX We assume #address-cells is 1 at this point. 312 */ 313 if (OF_getproplen(node, "address") == sizeof(fb_phys)) { 314 OF_getprop(node, "address", &fb_phys, sizeof(fb_phys)); 315 sc->sc_tag = &bs_be_tag; 316 bus_space_map(sc->sc_tag, fb_phys, sc->sc_height * 317 sc->sc_stride, BUS_SPACE_MAP_PREFETCHABLE, &sc->sc_addr); 318 } else { 319 /* 320 * Some IBM systems don't have an address property. Try to 321 * guess the framebuffer region from the assigned addresses. 322 * This is ugly, but there doesn't seem to be an alternative. 323 * Linux does the same thing. 324 */ 325 326 fb_phys = sc->sc_num_pciaddrs; 327 for (i = 0; i < sc->sc_num_pciaddrs; i++) { 328 /* If it is too small, not the framebuffer */ 329 if (sc->sc_pciaddrs[i].size_lo < 330 sc->sc_stride*sc->sc_height) 331 continue; 332 /* If it is not memory, it isn't either */ 333 if (!(sc->sc_pciaddrs[i].phys_hi & 334 OFW_PCI_PHYS_HI_SPACE_MEM32)) 335 continue; 336 337 /* This could be the framebuffer */ 338 fb_phys = i; 339 340 /* If it is prefetchable, it certainly is */ 341 if (sc->sc_pciaddrs[i].phys_hi & 342 OFW_PCI_PHYS_HI_PREFETCHABLE) 343 break; 344 } 345 if (fb_phys == sc->sc_num_pciaddrs) 346 return (0); 347 348 OF_decode_addr(node, fb_phys, &sc->sc_tag, &sc->sc_addr, NULL); 349 } 350 351 ofwfb_init(0, &sc->sc_va, 0); 352 353 return (0); 354 } 355 356 static int 357 ofwfb_probe(int unit, video_adapter_t **adp, void *arg, int flags) 358 { 359 TODO; 360 return (0); 361 } 362 363 static int 364 ofwfb_init(int unit, video_adapter_t *adp, int flags) 365 { 366 struct ofwfb_softc *sc; 367 video_info_t *vi; 368 int cborder; 369 int font_height; 370 371 sc = (struct ofwfb_softc *)adp; 372 vi = &adp->va_info; 373 374 vid_init_struct(adp, "ofwfb", -1, unit); 375 376 /* The default font size can be overridden by loader */ 377 font_height = 16; 378 TUNABLE_INT_FETCH("hw.syscons.fsize", &font_height); 379 if (font_height == 8) { 380 sc->sc_font = dflt_font_8; 381 sc->sc_font_height = 8; 382 } else if (font_height == 14) { 383 sc->sc_font = dflt_font_14; 384 sc->sc_font_height = 14; 385 } else { 386 /* default is 8x16 */ 387 sc->sc_font = dflt_font_16; 388 sc->sc_font_height = 16; 389 } 390 391 /* The user can set a border in chars - default is 1 char width */ 392 cborder = 1; 393 TUNABLE_INT_FETCH("hw.syscons.border", &cborder); 394 395 vi->vi_cheight = sc->sc_font_height; 396 vi->vi_width = sc->sc_width/8 - 2*cborder; 397 vi->vi_height = sc->sc_height/sc->sc_font_height - 2*cborder; 398 vi->vi_cwidth = 8; 399 400 /* 401 * Clamp width/height to syscons maximums 402 */ 403 if (vi->vi_width > COL) 404 vi->vi_width = COL; 405 if (vi->vi_height > ROW) 406 vi->vi_height = ROW; 407 408 sc->sc_xmargin = (sc->sc_width - (vi->vi_width * vi->vi_cwidth)) / 2; 409 sc->sc_ymargin = (sc->sc_height - (vi->vi_height * vi->vi_cheight))/2; 410 411 /* 412 * Avoid huge amounts of conditional code in syscons by 413 * defining a dummy h/w text display buffer. 414 */ 415 adp->va_window = (vm_offset_t) ofwfb_static_window; 416 417 /* 418 * Enable future font-loading and flag color support, as well as 419 * adding V_ADP_MODECHANGE so that we ofwfb_set_mode() gets called 420 * when the X server shuts down. This enables us to get the console 421 * back when X disappears. 422 */ 423 adp->va_flags |= V_ADP_FONT | V_ADP_COLOR | V_ADP_MODECHANGE; 424 425 ofwfb_set_mode(&sc->sc_va, 0); 426 427 vid_register(&sc->sc_va); 428 429 return (0); 430 } 431 432 static int 433 ofwfb_get_info(video_adapter_t *adp, int mode, video_info_t *info) 434 { 435 bcopy(&adp->va_info, info, sizeof(*info)); 436 return (0); 437 } 438 439 static int 440 ofwfb_query_mode(video_adapter_t *adp, video_info_t *info) 441 { 442 TODO; 443 return (0); 444 } 445 446 static int 447 ofwfb_set_mode(video_adapter_t *adp, int mode) 448 { 449 struct ofwfb_softc *sc; 450 char name[64]; 451 ihandle_t ih; 452 int i, retval; 453 454 sc = (struct ofwfb_softc *)adp; 455 456 if (ofwfb_reset_on_switch) { 457 /* 458 * Open the display device, which will initialize it. 459 */ 460 461 memset(name, 0, sizeof(name)); 462 OF_package_to_path(sc->sc_node, name, sizeof(name)); 463 ih = OF_open(name); 464 465 if (sc->sc_depth == 8) { 466 /* 467 * Install the ISO6429 colormap - older OFW systems 468 * don't do this by default 469 */ 470 for (i = 0; i < 16; i++) { 471 OF_call_method("color!", ih, 4, 1, 472 ofwfb_cmap[i].red, 473 ofwfb_cmap[i].green, 474 ofwfb_cmap[i].blue, 475 i, 476 &retval); 477 } 478 } 479 } 480 481 ofwfb_blank_display(&sc->sc_va, V_DISPLAY_ON); 482 483 return (0); 484 } 485 486 static int 487 ofwfb_save_font(video_adapter_t *adp, int page, int size, int width, 488 u_char *data, int c, int count) 489 { 490 TODO; 491 return (0); 492 } 493 494 static int 495 ofwfb_load_font(video_adapter_t *adp, int page, int size, int width, 496 u_char *data, int c, int count) 497 { 498 struct ofwfb_softc *sc; 499 500 sc = (struct ofwfb_softc *)adp; 501 502 /* 503 * syscons code has already determined that current width/height 504 * are unchanged for this new font 505 */ 506 sc->sc_font = data; 507 return (0); 508 } 509 510 static int 511 ofwfb_show_font(video_adapter_t *adp, int page) 512 { 513 514 return (0); 515 } 516 517 static int 518 ofwfb_save_palette(video_adapter_t *adp, u_char *palette) 519 { 520 /* TODO; */ 521 return (0); 522 } 523 524 static int 525 ofwfb_load_palette(video_adapter_t *adp, u_char *palette) 526 { 527 /* TODO; */ 528 return (0); 529 } 530 531 static int 532 ofwfb_set_border8(video_adapter_t *adp, int border) 533 { 534 struct ofwfb_softc *sc; 535 int i, j; 536 uint8_t *addr; 537 uint8_t bground; 538 539 sc = (struct ofwfb_softc *)adp; 540 541 bground = ofwfb_background(border); 542 543 /* Set top margin */ 544 addr = (uint8_t *) sc->sc_addr; 545 for (i = 0; i < sc->sc_ymargin; i++) { 546 for (j = 0; j < sc->sc_width; j++) { 547 *(addr + j) = bground; 548 } 549 addr += sc->sc_stride; 550 } 551 552 /* bottom margin */ 553 addr = (uint8_t *) sc->sc_addr + (sc->sc_height - sc->sc_ymargin)*sc->sc_stride; 554 for (i = 0; i < sc->sc_ymargin; i++) { 555 for (j = 0; j < sc->sc_width; j++) { 556 *(addr + j) = bground; 557 } 558 addr += sc->sc_stride; 559 } 560 561 /* remaining left and right borders */ 562 addr = (uint8_t *) sc->sc_addr + sc->sc_ymargin*sc->sc_stride; 563 for (i = 0; i < sc->sc_height - 2*sc->sc_xmargin; i++) { 564 for (j = 0; j < sc->sc_xmargin; j++) { 565 *(addr + j) = bground; 566 *(addr + j + sc->sc_width - sc->sc_xmargin) = bground; 567 } 568 addr += sc->sc_stride; 569 } 570 571 return (0); 572 } 573 574 static int 575 ofwfb_set_border32(video_adapter_t *adp, int border) 576 { 577 /* XXX Be lazy for now and blank entire screen */ 578 return (ofwfb_blank_display32(adp, border)); 579 } 580 581 static int 582 ofwfb_set_border(video_adapter_t *adp, int border) 583 { 584 struct ofwfb_softc *sc; 585 586 sc = (struct ofwfb_softc *)adp; 587 588 return ((*sc->sc_set_border)(adp, border)); 589 } 590 591 static int 592 ofwfb_save_state(video_adapter_t *adp, void *p, size_t size) 593 { 594 TODO; 595 return (0); 596 } 597 598 static int 599 ofwfb_load_state(video_adapter_t *adp, void *p) 600 { 601 TODO; 602 return (0); 603 } 604 605 static int 606 ofwfb_set_win_org(video_adapter_t *adp, off_t offset) 607 { 608 TODO; 609 return (0); 610 } 611 612 static int 613 ofwfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row) 614 { 615 *col = 0; 616 *row = 0; 617 618 return (0); 619 } 620 621 static int 622 ofwfb_set_hw_cursor(video_adapter_t *adp, int col, int row) 623 { 624 625 return (0); 626 } 627 628 static int 629 ofwfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height, 630 int celsize, int blink) 631 { 632 return (0); 633 } 634 635 static int 636 ofwfb_blank_display8(video_adapter_t *adp, int mode) 637 { 638 struct ofwfb_softc *sc; 639 int i; 640 uint32_t *addr; 641 uint32_t color; 642 uint32_t end; 643 644 sc = (struct ofwfb_softc *)adp; 645 addr = (uint32_t *) sc->sc_addr; 646 end = (sc->sc_stride/4) * sc->sc_height; 647 648 /* Splat 4 pixels at once. */ 649 color = (ofwfb_background(SC_NORM_ATTR) << 24) | 650 (ofwfb_background(SC_NORM_ATTR) << 16) | 651 (ofwfb_background(SC_NORM_ATTR) << 8) | 652 (ofwfb_background(SC_NORM_ATTR)); 653 654 for (i = 0; i < end; i++) 655 *(addr + i) = color; 656 657 return (0); 658 } 659 660 static int 661 ofwfb_blank_display32(video_adapter_t *adp, int mode) 662 { 663 struct ofwfb_softc *sc; 664 int i; 665 uint32_t *addr, blank; 666 667 sc = (struct ofwfb_softc *)adp; 668 addr = (uint32_t *) sc->sc_addr; 669 blank = ofwfb_pix32(sc, ofwfb_background(SC_NORM_ATTR)); 670 671 for (i = 0; i < (sc->sc_stride/4)*sc->sc_height; i++) 672 *(addr + i) = blank; 673 674 return (0); 675 } 676 677 static int 678 ofwfb_blank_display(video_adapter_t *adp, int mode) 679 { 680 struct ofwfb_softc *sc; 681 682 sc = (struct ofwfb_softc *)adp; 683 684 return ((*sc->sc_blank)(adp, mode)); 685 } 686 687 static int 688 ofwfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr, 689 int prot, vm_memattr_t *memattr) 690 { 691 struct ofwfb_softc *sc; 692 int i; 693 694 sc = (struct ofwfb_softc *)adp; 695 696 /* 697 * Make sure the requested address lies within the PCI device's 698 * assigned addrs 699 */ 700 for (i = 0; i < sc->sc_num_pciaddrs; i++) 701 if (offset >= sc->sc_pciaddrs[i].phys_lo && 702 offset < (sc->sc_pciaddrs[i].phys_lo + sc->sc_pciaddrs[i].size_lo)) 703 { 704 /* 705 * If this is a prefetchable BAR, we can (and should) 706 * enable write-combining. 707 */ 708 if (sc->sc_pciaddrs[i].phys_hi & 709 OFW_PCI_PHYS_HI_PREFETCHABLE) 710 *memattr = VM_MEMATTR_WRITE_COMBINING; 711 712 *paddr = offset; 713 return (0); 714 } 715 716 /* 717 * Hack for Radeon... 718 */ 719 if (ofwfb_ignore_mmap_checks) { 720 *paddr = offset; 721 return (0); 722 } 723 724 /* 725 * This might be a legacy VGA mem request: if so, just point it at the 726 * framebuffer, since it shouldn't be touched 727 */ 728 if (offset < sc->sc_stride*sc->sc_height) { 729 *paddr = sc->sc_addr + offset; 730 return (0); 731 } 732 733 /* 734 * Error if we didn't have a better idea. 735 */ 736 if (sc->sc_num_pciaddrs == 0) 737 return (ENOMEM); 738 739 return (EINVAL); 740 } 741 742 static int 743 ofwfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data) 744 { 745 746 return (0); 747 } 748 749 static int 750 ofwfb_clear(video_adapter_t *adp) 751 { 752 TODO; 753 return (0); 754 } 755 756 static int 757 ofwfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy) 758 { 759 TODO; 760 return (0); 761 } 762 763 static int 764 ofwfb_bitblt(video_adapter_t *adp, ...) 765 { 766 TODO; 767 return (0); 768 } 769 770 static int 771 ofwfb_diag(video_adapter_t *adp, int level) 772 { 773 TODO; 774 return (0); 775 } 776 777 static int 778 ofwfb_save_cursor_palette(video_adapter_t *adp, u_char *palette) 779 { 780 TODO; 781 return (0); 782 } 783 784 static int 785 ofwfb_load_cursor_palette(video_adapter_t *adp, u_char *palette) 786 { 787 TODO; 788 return (0); 789 } 790 791 static int 792 ofwfb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n) 793 { 794 TODO; 795 return (0); 796 } 797 798 static int 799 ofwfb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a, 800 int size, int bpp, int bit_ltor, int byte_ltor) 801 { 802 TODO; 803 return (0); 804 } 805 806 static int 807 ofwfb_putc8(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a) 808 { 809 struct ofwfb_softc *sc; 810 int row; 811 int col; 812 int i; 813 uint32_t *addr; 814 u_char *p, fg, bg; 815 union { 816 uint32_t l; 817 uint8_t c[4]; 818 } ch1, ch2; 819 820 sc = (struct ofwfb_softc *)adp; 821 row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight; 822 col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth; 823 p = sc->sc_font + c*sc->sc_font_height; 824 addr = (u_int32_t *)((uintptr_t)sc->sc_addr 825 + (row + sc->sc_ymargin)*sc->sc_stride 826 + col + sc->sc_xmargin); 827 828 fg = ofwfb_foreground(a); 829 bg = ofwfb_background(a); 830 831 for (i = 0; i < sc->sc_font_height; i++) { 832 u_char fline = p[i]; 833 834 /* 835 * Assume that there is more background than foreground 836 * in characters and init accordingly 837 */ 838 ch1.l = ch2.l = (bg << 24) | (bg << 16) | (bg << 8) | bg; 839 840 /* 841 * Calculate 2 x 4-chars at a time, and then 842 * write these out. 843 */ 844 if (fline & 0x80) ch1.c[0] = fg; 845 if (fline & 0x40) ch1.c[1] = fg; 846 if (fline & 0x20) ch1.c[2] = fg; 847 if (fline & 0x10) ch1.c[3] = fg; 848 849 if (fline & 0x08) ch2.c[0] = fg; 850 if (fline & 0x04) ch2.c[1] = fg; 851 if (fline & 0x02) ch2.c[2] = fg; 852 if (fline & 0x01) ch2.c[3] = fg; 853 854 addr[0] = ch1.l; 855 addr[1] = ch2.l; 856 addr += (sc->sc_stride / sizeof(u_int32_t)); 857 } 858 859 return (0); 860 } 861 862 static int 863 ofwfb_putc32(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a) 864 { 865 struct ofwfb_softc *sc; 866 int row; 867 int col; 868 int i, j, k; 869 uint32_t *addr, fg, bg; 870 u_char *p; 871 872 sc = (struct ofwfb_softc *)adp; 873 row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight; 874 col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth; 875 p = sc->sc_font + c*sc->sc_font_height; 876 addr = (uint32_t *)sc->sc_addr 877 + (row + sc->sc_ymargin)*(sc->sc_stride/4) 878 + col + sc->sc_xmargin; 879 880 fg = ofwfb_pix32(sc, ofwfb_foreground(a)); 881 bg = ofwfb_pix32(sc, ofwfb_background(a)); 882 883 for (i = 0; i < sc->sc_font_height; i++) { 884 for (j = 0, k = 7; j < 8; j++, k--) { 885 if ((p[i] & (1 << k)) == 0) 886 *(addr + j) = bg; 887 else 888 *(addr + j) = fg; 889 } 890 addr += (sc->sc_stride/4); 891 } 892 893 return (0); 894 } 895 896 static int 897 ofwfb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a) 898 { 899 struct ofwfb_softc *sc; 900 901 sc = (struct ofwfb_softc *)adp; 902 903 return ((*sc->sc_putc)(adp, off, c, a)); 904 } 905 906 static int 907 ofwfb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len) 908 { 909 int i; 910 911 for (i = 0; i < len; i++) { 912 ofwfb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8); 913 } 914 return (0); 915 } 916 917 static int 918 ofwfb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image, 919 uint32_t pixel_mask, int size, int width) 920 { 921 struct ofwfb_softc *sc; 922 923 sc = (struct ofwfb_softc *)adp; 924 925 return ((*sc->sc_putm)(adp, x, y, pixel_image, pixel_mask, size, 926 width)); 927 } 928 929 static int 930 ofwfb_putm8(video_adapter_t *adp, int x, int y, uint8_t *pixel_image, 931 uint32_t pixel_mask, int size, int width) 932 { 933 struct ofwfb_softc *sc; 934 int i, j, k; 935 uint8_t *addr; 936 u_char fg, bg; 937 938 sc = (struct ofwfb_softc *)adp; 939 addr = (u_int8_t *)((uintptr_t)sc->sc_addr 940 + (y + sc->sc_ymargin)*sc->sc_stride 941 + x + sc->sc_xmargin); 942 943 fg = ofwfb_foreground(SC_NORM_ATTR); 944 bg = ofwfb_background(SC_NORM_ATTR); 945 946 for (i = 0; i < size && i+y < sc->sc_height - 2*sc->sc_ymargin; i++) { 947 /* 948 * Calculate 2 x 4-chars at a time, and then 949 * write these out. 950 */ 951 for (j = 0, k = width; j < 8; j++, k--) { 952 if (x + j >= sc->sc_width - 2*sc->sc_xmargin) 953 continue; 954 955 if (pixel_image[i] & (1 << k)) 956 addr[j] = (addr[j] == fg) ? bg : fg; 957 } 958 959 addr += (sc->sc_stride / sizeof(u_int8_t)); 960 } 961 962 return (0); 963 } 964 965 static int 966 ofwfb_putm32(video_adapter_t *adp, int x, int y, uint8_t *pixel_image, 967 uint32_t pixel_mask, int size, int width) 968 { 969 struct ofwfb_softc *sc; 970 int i, j, k; 971 uint32_t fg, bg; 972 uint32_t *addr; 973 974 sc = (struct ofwfb_softc *)adp; 975 addr = (uint32_t *)sc->sc_addr 976 + (y + sc->sc_ymargin)*(sc->sc_stride/4) 977 + x + sc->sc_xmargin; 978 979 fg = ofwfb_pix32(sc, ofwfb_foreground(SC_NORM_ATTR)); 980 bg = ofwfb_pix32(sc, ofwfb_background(SC_NORM_ATTR)); 981 982 for (i = 0; i < size && i+y < sc->sc_height - 2*sc->sc_ymargin; i++) { 983 for (j = 0, k = width; j < 8; j++, k--) { 984 if (x + j >= sc->sc_width - 2*sc->sc_xmargin) 985 continue; 986 987 if (pixel_image[i] & (1 << k)) 988 *(addr + j) = (*(addr + j) == fg) ? bg : fg; 989 } 990 addr += (sc->sc_stride/4); 991 } 992 993 return (0); 994 } 995 996 /* 997 * Define the syscons nexus device attachment 998 */ 999 static void 1000 ofwfb_scidentify(driver_t *driver, device_t parent) 1001 { 1002 device_t child; 1003 1004 /* 1005 * Add with a priority guaranteed to make it last on 1006 * the device list 1007 */ 1008 child = BUS_ADD_CHILD(parent, INT_MAX, SC_DRIVER_NAME, 0); 1009 } 1010 1011 static int 1012 ofwfb_scprobe(device_t dev) 1013 { 1014 int error; 1015 1016 device_set_desc(dev, "System console"); 1017 1018 error = sc_probe_unit(device_get_unit(dev), 1019 device_get_flags(dev) | SC_AUTODETECT_KBD); 1020 if (error != 0) 1021 return (error); 1022 1023 /* This is a fake device, so make sure we added it ourselves */ 1024 return (BUS_PROBE_NOWILDCARD); 1025 } 1026 1027 static int 1028 ofwfb_scattach(device_t dev) 1029 { 1030 return (sc_attach_unit(device_get_unit(dev), 1031 device_get_flags(dev) | SC_AUTODETECT_KBD)); 1032 } 1033 1034 static device_method_t ofwfb_sc_methods[] = { 1035 DEVMETHOD(device_identify, ofwfb_scidentify), 1036 DEVMETHOD(device_probe, ofwfb_scprobe), 1037 DEVMETHOD(device_attach, ofwfb_scattach), 1038 { 0, 0 } 1039 }; 1040 1041 static driver_t ofwfb_sc_driver = { 1042 SC_DRIVER_NAME, 1043 ofwfb_sc_methods, 1044 sizeof(sc_softc_t), 1045 }; 1046 1047 DRIVER_MODULE(ofwfb, nexus, ofwfb_sc_driver, 0, 0); 1048 1049 /* 1050 * Utility routines from <dev/fb/fbreg.h> 1051 */ 1052 void 1053 ofwfb_bcopy(const void *s, void *d, size_t c) 1054 { 1055 bcopy(s, d, c); 1056 } 1057 1058 void 1059 ofwfb_bzero(void *d, size_t c) 1060 { 1061 bzero(d, c); 1062 } 1063 1064 void 1065 ofwfb_fillw(int pat, void *base, size_t cnt) 1066 { 1067 u_int16_t *bptr = base; 1068 1069 while (cnt--) 1070 *bptr++ = pat; 1071 } 1072 1073 u_int16_t 1074 ofwfb_readw(u_int16_t *addr) 1075 { 1076 return (*addr); 1077 } 1078 1079 void 1080 ofwfb_writew(u_int16_t *addr, u_int16_t val) 1081 { 1082 *addr = val; 1083 }
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