sys/powerpc/ofw/ofw_syscons.c

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