sys/arm/broadcom/bcm2835/bcm2835_fb.c

   1 /*-
   2  * Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
   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/bus.h>
  33 #include <sys/consio.h>
  34 #include <sys/fbio.h>
  35 #include <sys/kdb.h>
  36 #include <sys/kernel.h>
  37 #include <sys/malloc.h>
  38 #include <sys/module.h>
  39
  40 #include <vm/vm.h>
  41 #include <vm/pmap.h>
  42
  43 #include <dev/fb/fbreg.h>
  44 #include <dev/fdt/fdt_common.h>
  45 #include <dev/ofw/ofw_bus.h>
  46 #include <dev/ofw/ofw_bus_subr.h>
  47 #include <dev/syscons/syscons.h>
  48
  49 #include <arm/broadcom/bcm2835/bcm2835_mbox_prop.h>
  50
  51 #include "mbox_if.h"
  52
  53 struct argb {
  54         uint8_t         a;
  55         uint8_t         r;
  56         uint8_t         g;
  57         uint8_t         b;
  58 };
  59
  60 static struct argb bcmfb_palette[16] = {
  61         {0x00, 0x00, 0x00, 0x00},
  62         {0x00, 0x00, 0x00, 0xaa},
  63         {0x00, 0x00, 0xaa, 0x00},
  64         {0x00, 0x00, 0xaa, 0xaa},
  65         {0x00, 0xaa, 0x00, 0x00},
  66         {0x00, 0xaa, 0x00, 0xaa},
  67         {0x00, 0xaa, 0x55, 0x00},
  68         {0x00, 0xaa, 0xaa, 0xaa},
  69         {0x00, 0x55, 0x55, 0x55},
  70         {0x00, 0x55, 0x55, 0xff},
  71         {0x00, 0x55, 0xff, 0x55},
  72         {0x00, 0x55, 0xff, 0xff},
  73         {0x00, 0xff, 0x55, 0x55},
  74         {0x00, 0xff, 0x55, 0xff},
  75         {0x00, 0xff, 0xff, 0x55},
  76         {0x00, 0xff, 0xff, 0xff}
  77 };
  78
  79 /* mouse pointer from dev/syscons/scgfbrndr.c */
  80 static u_char mouse_pointer[16] = {
  81         0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
  82         0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
  83 };
  84
  85 #define BCMFB_FONT_HEIGHT       16
  86 #define BCMFB_FONT_WIDTH        8
  87 #define FB_WIDTH                640
  88 #define FB_HEIGHT               480
  89 #define FB_DEPTH                24
  90
  91 struct bcmsc_softc {
  92         /* Videoadpater part */
  93         video_adapter_t va;
  94
  95         intptr_t        fb_addr;
  96         intptr_t        fb_paddr;
  97         unsigned int    fb_size;
  98
  99         unsigned int    height;
 100         unsigned int    width;
 101         unsigned int    depth;
 102         unsigned int    stride;
 103
 104         unsigned int    xmargin;
 105         unsigned int    ymargin;
 106
 107         unsigned char   *font;
 108         int             fbswap;
 109         int             initialized;
 110 };
 111
 112 static struct bcmsc_softc bcmsc;
 113
 114 static int bcm_fb_probe(device_t);
 115 static int bcm_fb_attach(device_t);
 116 static void bcmfb_update_margins(video_adapter_t *adp);
 117 static int bcmfb_configure(int);
 118
 119 static int
 120 bcm_fb_probe(device_t dev)
 121 {
 122         int error;
 123
 124         if (!ofw_bus_is_compatible(dev, "broadcom,bcm2835-fb"))
 125                 return (ENXIO);
 126         device_set_desc(dev, "BCM2835 framebuffer device");
 127         error = sc_probe_unit(device_get_unit(dev),
 128             device_get_flags(dev) | SC_AUTODETECT_KBD);
 129         if (error != 0)
 130                 return (error);
 131
 132         return (BUS_PROBE_DEFAULT);
 133 }
 134
 135 static int
 136 bcm_fb_attach(device_t dev)
 137 {
 138         struct bcm2835_fb_config fb;
 139         struct bcmsc_softc *sc;
 140
 141         sc = (struct bcmsc_softc *)vid_get_adapter(vid_find_adapter(
 142             "bcmfb", 0));
 143         if (sc != NULL)
 144                 device_set_softc(dev, sc);
 145         else
 146                 sc = device_get_softc(dev);
 147
 148         memset(&fb, 0, sizeof(fb));
 149         if (bcm2835_mbox_fb_get_w_h(dev, &fb) != 0)
 150                 return (ENXIO);
 151         fb.bpp = FB_DEPTH;
 152         if (bcm2835_mbox_fb_init(dev, &fb) != 0)
 153                 return (ENXIO);
 154
 155         sc->fb_addr = (intptr_t)pmap_mapdev(fb.base, fb.size);
 156         sc->fb_paddr = fb.base;
 157         sc->fb_size = fb.size;
 158         sc->depth = fb.bpp;
 159         sc->stride = fb.pitch;
 160         sc->width = fb.xres;
 161         sc->height = fb.yres;
 162         bcmfb_update_margins(&sc->va);
 163
 164         if (sc_attach_unit(device_get_unit(dev),
 165             device_get_flags(dev) | SC_AUTODETECT_KBD) != 0) {
 166                 device_printf(dev, "failed to attach syscons\n");
 167                 return (ENXIO);
 168         }
 169
 170         device_printf(dev, "%dx%d(%dx%d@%d,%d) %dbpp\n", fb.xres, fb.yres,
 171             fb.vxres, fb.vyres, fb.xoffset, fb.yoffset, fb.bpp);
 172         device_printf(dev,
 173             "fbswap: %d, pitch %d, base 0x%08x, screen_size %d\n",
 174             sc->fbswap, fb.pitch, fb.base, fb.size);
 175
 176         return (0);
 177 }
 178
 179 static device_method_t bcm_fb_methods[] = {
 180         /* Device interface */
 181         DEVMETHOD(device_probe,         bcm_fb_probe),
 182         DEVMETHOD(device_attach,        bcm_fb_attach),
 183
 184         { 0, 0 }
 185 };
 186
 187 static devclass_t bcm_fb_devclass;
 188
 189 static driver_t bcm_fb_driver = {
 190         "fb",
 191         bcm_fb_methods,
 192         sizeof(struct bcmsc_softc),
 193 };
 194
 195 DRIVER_MODULE(bcm2835fb, ofwbus, bcm_fb_driver, bcm_fb_devclass, 0, 0);
 196
 197 /*
 198  * Video driver routines and glue.
 199  */
 200 static vi_probe_t               bcmfb_probe;
 201 static vi_init_t                bcmfb_init;
 202 static vi_get_info_t            bcmfb_get_info;
 203 static vi_query_mode_t          bcmfb_query_mode;
 204 static vi_set_mode_t            bcmfb_set_mode;
 205 static vi_save_font_t           bcmfb_save_font;
 206 static vi_load_font_t           bcmfb_load_font;
 207 static vi_show_font_t           bcmfb_show_font;
 208 static vi_save_palette_t        bcmfb_save_palette;
 209 static vi_load_palette_t        bcmfb_load_palette;
 210 static vi_set_border_t          bcmfb_set_border;
 211 static vi_save_state_t          bcmfb_save_state;
 212 static vi_load_state_t          bcmfb_load_state;
 213 static vi_set_win_org_t         bcmfb_set_win_org;
 214 static vi_read_hw_cursor_t      bcmfb_read_hw_cursor;
 215 static vi_set_hw_cursor_t       bcmfb_set_hw_cursor;
 216 static vi_set_hw_cursor_shape_t bcmfb_set_hw_cursor_shape;
 217 static vi_blank_display_t       bcmfb_blank_display;
 218 static vi_mmap_t                bcmfb_mmap;
 219 static vi_ioctl_t               bcmfb_ioctl;
 220 static vi_clear_t               bcmfb_clear;
 221 static vi_fill_rect_t           bcmfb_fill_rect;
 222 static vi_bitblt_t              bcmfb_bitblt;
 223 static vi_diag_t                bcmfb_diag;
 224 static vi_save_cursor_palette_t bcmfb_save_cursor_palette;
 225 static vi_load_cursor_palette_t bcmfb_load_cursor_palette;
 226 static vi_copy_t                bcmfb_copy;
 227 static vi_putp_t                bcmfb_putp;
 228 static vi_putc_t                bcmfb_putc;
 229 static vi_puts_t                bcmfb_puts;
 230 static vi_putm_t                bcmfb_putm;
 231
 232 static video_switch_t bcmfbvidsw = {
 233         .probe                  = bcmfb_probe,
 234         .init                   = bcmfb_init,
 235         .get_info               = bcmfb_get_info,
 236         .query_mode             = bcmfb_query_mode,
 237         .set_mode               = bcmfb_set_mode,
 238         .save_font              = bcmfb_save_font,
 239         .load_font              = bcmfb_load_font,
 240         .show_font              = bcmfb_show_font,
 241         .save_palette           = bcmfb_save_palette,
 242         .load_palette           = bcmfb_load_palette,
 243         .set_border             = bcmfb_set_border,
 244         .save_state             = bcmfb_save_state,
 245         .load_state             = bcmfb_load_state,
 246         .set_win_org            = bcmfb_set_win_org,
 247         .read_hw_cursor         = bcmfb_read_hw_cursor,
 248         .set_hw_cursor          = bcmfb_set_hw_cursor,
 249         .set_hw_cursor_shape    = bcmfb_set_hw_cursor_shape,
 250         .blank_display          = bcmfb_blank_display,
 251         .mmap                   = bcmfb_mmap,
 252         .ioctl                  = bcmfb_ioctl,
 253         .clear                  = bcmfb_clear,
 254         .fill_rect              = bcmfb_fill_rect,
 255         .bitblt                 = bcmfb_bitblt,
 256         .diag                   = bcmfb_diag,
 257         .save_cursor_palette    = bcmfb_save_cursor_palette,
 258         .load_cursor_palette    = bcmfb_load_cursor_palette,
 259         .copy                   = bcmfb_copy,
 260         .putp                   = bcmfb_putp,
 261         .putc                   = bcmfb_putc,
 262         .puts                   = bcmfb_puts,
 263         .putm                   = bcmfb_putm,
 264 };
 265
 266 VIDEO_DRIVER(bcmfb, bcmfbvidsw, bcmfb_configure);
 267
 268 static vr_init_t bcmrend_init;
 269 static vr_clear_t bcmrend_clear;
 270 static vr_draw_border_t bcmrend_draw_border;
 271 static vr_draw_t bcmrend_draw;
 272 static vr_set_cursor_t bcmrend_set_cursor;
 273 static vr_draw_cursor_t bcmrend_draw_cursor;
 274 static vr_blink_cursor_t bcmrend_blink_cursor;
 275 static vr_set_mouse_t bcmrend_set_mouse;
 276 static vr_draw_mouse_t bcmrend_draw_mouse;
 277
 278 /*
 279  * We use our own renderer; this is because we must emulate a hardware
 280  * cursor.
 281  */
 282 static sc_rndr_sw_t bcmrend = {
 283         bcmrend_init,
 284         bcmrend_clear,
 285         bcmrend_draw_border,
 286         bcmrend_draw,
 287         bcmrend_set_cursor,
 288         bcmrend_draw_cursor,
 289         bcmrend_blink_cursor,
 290         bcmrend_set_mouse,
 291         bcmrend_draw_mouse
 292 };
 293
 294 RENDERER(bcmfb, 0, bcmrend, gfb_set);
 295 RENDERER_MODULE(bcmfb, gfb_set);
 296
 297 static void
 298 bcmrend_init(scr_stat* scp)
 299 {
 300 }
 301
 302 static void
 303 bcmrend_clear(scr_stat* scp, int c, int attr)
 304 {
 305 }
 306
 307 static void
 308 bcmrend_draw_border(scr_stat* scp, int color)
 309 {
 310 }
 311
 312 static void
 313 bcmrend_draw(scr_stat* scp, int from, int count, int flip)
 314 {
 315         video_adapter_t* adp = scp->sc->adp;
 316         int i, c, a;
 317
 318         if (!flip) {
 319                 /* Normal printing */
 320                 vidd_puts(adp, from, (uint16_t*)sc_vtb_pointer(&scp->vtb, from), count);
 321         } else {
 322                 /* This is for selections and such: invert the color attribute */
 323                 for (i = count; i-- > 0; ++from) {
 324                         c = sc_vtb_getc(&scp->vtb, from);
 325                         a = sc_vtb_geta(&scp->vtb, from) >> 8;
 326                         vidd_putc(adp, from, c, (a >> 4) | ((a & 0xf) << 4));
 327                 }
 328         }
 329 }
 330
 331 static void
 332 bcmrend_set_cursor(scr_stat* scp, int base, int height, int blink)
 333 {
 334 }
 335
 336 static void
 337 bcmrend_draw_cursor(scr_stat* scp, int off, int blink, int on, int flip)
 338 {
 339         int bytes, col, i, j, row;
 340         struct bcmsc_softc *sc;
 341         uint8_t *addr;
 342         video_adapter_t *adp;
 343
 344         adp = scp->sc->adp;
 345         sc = (struct bcmsc_softc *)adp;
 346
 347         if (scp->curs_attr.height <= 0)
 348                 return;
 349
 350         if (sc->fb_addr == 0)
 351                 return;
 352
 353         if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
 354                 return;
 355
 356         /* calculate the coordinates in the video buffer */
 357         row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
 358         col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
 359
 360         addr = (uint8_t *)sc->fb_addr
 361             + (row + sc->ymargin)*(sc->stride)
 362             + (sc->depth/8) * (col + sc->xmargin);
 363
 364         bytes = sc->depth / 8;
 365         /* our cursor consists of simply inverting the char under it */
 366         for (i = 0; i < adp->va_info.vi_cheight; i++) {
 367                 for (j = 0; j < adp->va_info.vi_cwidth; j++) {
 368                         switch (sc->depth) {
 369                         case 32:
 370                         case 24:
 371                                 addr[bytes*j + 2] ^= 0xff;
 372                                 /* FALLTHROUGH */
 373                         case 16:
 374                                 addr[bytes*j + 1] ^= 0xff;
 375                                 addr[bytes*j] ^= 0xff;
 376                                 break;
 377                         default:
 378                                 break;
 379                         }
 380                 }
 381
 382                 addr += sc->stride;
 383         }
 384 }
 385
 386 static void
 387 bcmrend_blink_cursor(scr_stat* scp, int at, int flip)
 388 {
 389 }
 390
 391 static void
 392 bcmrend_set_mouse(scr_stat* scp)
 393 {
 394 }
 395
 396 static void
 397 bcmrend_draw_mouse(scr_stat* scp, int x, int y, int on)
 398 {
 399         vidd_putm(scp->sc->adp, x, y, mouse_pointer, 0xffffffff, 16, 8);
 400 }
 401
 402 static uint16_t bcmfb_static_window[ROW*COL];
 403 extern u_char dflt_font_16[];
 404
 405 /*
 406  * Update videoadapter settings after changing resolution
 407  */
 408 static void
 409 bcmfb_update_margins(video_adapter_t *adp)
 410 {
 411         struct bcmsc_softc *sc;
 412         video_info_t *vi;
 413
 414         sc = (struct bcmsc_softc *)adp;
 415         vi = &adp->va_info;
 416
 417         sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
 418         sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight)) / 2;
 419 }
 420
 421 static int
 422 bcmfb_configure(int flags)
 423 {
 424         char bootargs[2048], *n, *p, *v;
 425         pcell_t cell;
 426         phandle_t chosen, display, root;
 427         struct bcmsc_softc *sc;
 428
 429         sc = &bcmsc;
 430         if (sc->initialized)
 431                 return (0);
 432
 433         sc->width = 0;
 434         sc->height = 0;
 435
 436         /*
 437          * It seems there is no way to let syscons framework know
 438          * that framebuffer resolution has changed. So just try
 439          * to fetch data from FDT bootargs, FDT display data and
 440          * finally go with defaults if everything else has failed.
 441          */
 442         chosen = OF_finddevice("/chosen");
 443         if (chosen != 0 &&
 444             OF_getprop(chosen, "bootargs", &bootargs, sizeof(bootargs)) > 0) {
 445                 p = bootargs;
 446                 while ((v = strsep(&p, " ")) != NULL) {
 447                         if (*v == '\0')
 448                                 continue;
 449                         n = strsep(&v, "=");
 450                         if (strcmp(n, "bcm2708_fb.fbwidth") == 0 && v != NULL)
 451                                 sc->width = (unsigned int)strtol(v, NULL, 0);
 452                         else if (strcmp(n, "bcm2708_fb.fbheight") == 0 &&
 453                             v != NULL)
 454                                 sc->height = (unsigned int)strtol(v, NULL, 0);
 455                         else if (strcmp(n, "bcm2708_fb.fbswap") == 0 &&
 456                             v != NULL)
 457                                 if (*v == '1')
 458                                         sc->fbswap = 1;
 459                 }
 460         }
 461
 462         root = OF_finddevice("/");
 463         if ((root != 0) &&
 464             (display = fdt_find_compatible(root, "broadcom,bcm2835-fb", 1))) {
 465                 if (sc->width == 0) {
 466                         if ((OF_getprop(display, "broadcom,width",
 467                             &cell, sizeof(cell))) > 0)
 468                                 sc->width = (int)fdt32_to_cpu(cell);
 469                 }
 470
 471                 if (sc->height == 0) {
 472                         if ((OF_getprop(display, "broadcom,height",
 473                             &cell, sizeof(cell))) > 0)
 474                                 sc->height = (int)fdt32_to_cpu(cell);
 475                 }
 476         }
 477
 478         if (sc->width == 0)
 479                 sc->width = FB_WIDTH;
 480         if (sc->height == 0)
 481                 sc->height = FB_HEIGHT;
 482
 483         bcmfb_init(0, &sc->va, 0);
 484         sc->initialized = 1;
 485
 486         return (0);
 487 }
 488
 489 static int
 490 bcmfb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
 491 {
 492
 493         return (0);
 494 }
 495
 496 static int
 497 bcmfb_init(int unit, video_adapter_t *adp, int flags)
 498 {
 499         struct bcmsc_softc *sc;
 500         video_info_t *vi;
 501
 502         sc = (struct bcmsc_softc *)adp;
 503         vi = &adp->va_info;
 504
 505         vid_init_struct(adp, "bcmfb", -1, unit);
 506
 507         sc->font = dflt_font_16;
 508         vi->vi_cheight = BCMFB_FONT_HEIGHT;
 509         vi->vi_cwidth = BCMFB_FONT_WIDTH;
 510         vi->vi_width = sc->width / vi->vi_cwidth;
 511         vi->vi_height = sc->height / vi->vi_cheight;
 512
 513         /*
 514          * Clamp width/height to syscons maximums
 515          */
 516         if (vi->vi_width > COL)
 517                 vi->vi_width = COL;
 518         if (vi->vi_height > ROW)
 519                 vi->vi_height = ROW;
 520
 521         sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
 522         sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight)) / 2;
 523
 524         adp->va_window = (vm_offset_t) bcmfb_static_window;
 525         adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
 526
 527         vid_register(&sc->va);
 528
 529         return (0);
 530 }
 531
 532 static int
 533 bcmfb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
 534 {
 535         bcopy(&adp->va_info, info, sizeof(*info));
 536         return (0);
 537 }
 538
 539 static int
 540 bcmfb_query_mode(video_adapter_t *adp, video_info_t *info)
 541 {
 542         return (0);
 543 }
 544
 545 static int
 546 bcmfb_set_mode(video_adapter_t *adp, int mode)
 547 {
 548         return (0);
 549 }
 550
 551 static int
 552 bcmfb_save_font(video_adapter_t *adp, int page, int size, int width,
 553     u_char *data, int c, int count)
 554 {
 555         return (0);
 556 }
 557
 558 static int
 559 bcmfb_load_font(video_adapter_t *adp, int page, int size, int width,
 560     u_char *data, int c, int count)
 561 {
 562         struct bcmsc_softc *sc;
 563
 564         sc = (struct bcmsc_softc *)adp;
 565         sc->font = data;
 566
 567         return (0);
 568 }
 569
 570 static int
 571 bcmfb_show_font(video_adapter_t *adp, int page)
 572 {
 573         return (0);
 574 }
 575
 576 static int
 577 bcmfb_save_palette(video_adapter_t *adp, u_char *palette)
 578 {
 579         return (0);
 580 }
 581
 582 static int
 583 bcmfb_load_palette(video_adapter_t *adp, u_char *palette)
 584 {
 585         return (0);
 586 }
 587
 588 static int
 589 bcmfb_set_border(video_adapter_t *adp, int border)
 590 {
 591         return (bcmfb_blank_display(adp, border));
 592 }
 593
 594 static int
 595 bcmfb_save_state(video_adapter_t *adp, void *p, size_t size)
 596 {
 597         return (0);
 598 }
 599
 600 static int
 601 bcmfb_load_state(video_adapter_t *adp, void *p)
 602 {
 603         return (0);
 604 }
 605
 606 static int
 607 bcmfb_set_win_org(video_adapter_t *adp, off_t offset)
 608 {
 609         return (0);
 610 }
 611
 612 static int
 613 bcmfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
 614 {
 615         *col = *row = 0;
 616
 617         return (0);
 618 }
 619
 620 static int
 621 bcmfb_set_hw_cursor(video_adapter_t *adp, int col, int row)
 622 {
 623         return (0);
 624 }
 625
 626 static int
 627 bcmfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
 628     int celsize, int blink)
 629 {
 630         return (0);
 631 }
 632
 633 static int
 634 bcmfb_blank_display(video_adapter_t *adp, int mode)
 635 {
 636
 637         struct bcmsc_softc *sc;
 638
 639         sc = (struct bcmsc_softc *)adp;
 640         if (sc && sc->fb_addr)
 641                 memset((void*)sc->fb_addr, 0, sc->fb_size);
 642
 643         return (0);
 644 }
 645
 646 static int
 647 bcmfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
 648     int prot, vm_memattr_t *memattr)
 649 {
 650         struct bcmsc_softc *sc;
 651
 652         sc = (struct bcmsc_softc *)adp;
 653
 654         /*
 655          * This might be a legacy VGA mem request: if so, just point it at the
 656          * framebuffer, since it shouldn't be touched
 657          */
 658         if (offset < sc->stride*sc->height) {
 659                 *paddr = sc->fb_paddr + offset;
 660                 return (0);
 661         }
 662
 663         return (EINVAL);
 664 }
 665
 666 static int
 667 bcmfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
 668 {
 669         struct bcmsc_softc *sc;
 670         struct fbtype *fb;
 671
 672         sc = (struct bcmsc_softc *)adp;
 673
 674         switch (cmd) {
 675         case FBIOGTYPE:
 676                 fb = (struct fbtype *)data;
 677                 fb->fb_type = FBTYPE_PCIMISC;
 678                 fb->fb_height = sc->height;
 679                 fb->fb_width = sc->width;
 680                 fb->fb_depth = sc->depth;
 681                 if (sc->depth <= 1 || sc->depth > 8)
 682                         fb->fb_cmsize = 0;
 683                 else
 684                         fb->fb_cmsize = 1 << sc->depth;
 685                 fb->fb_size = sc->fb_size;
 686                 break;
 687         default:
 688                 return (fb_commonioctl(adp, cmd, data));
 689         }
 690
 691         return (0);
 692 }
 693
 694 static int
 695 bcmfb_clear(video_adapter_t *adp)
 696 {
 697
 698         return (bcmfb_blank_display(adp, 0));
 699 }
 700
 701 static int
 702 bcmfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 703 {
 704
 705         return (0);
 706 }
 707
 708 static int
 709 bcmfb_bitblt(video_adapter_t *adp, ...)
 710 {
 711
 712         return (0);
 713 }
 714
 715 static int
 716 bcmfb_diag(video_adapter_t *adp, int level)
 717 {
 718
 719         return (0);
 720 }
 721
 722 static int
 723 bcmfb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
 724 {
 725
 726         return (0);
 727 }
 728
 729 static int
 730 bcmfb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
 731 {
 732
 733         return (0);
 734 }
 735
 736 static int
 737 bcmfb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
 738 {
 739
 740         return (0);
 741 }
 742
 743 static int
 744 bcmfb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
 745     int size, int bpp, int bit_ltor, int byte_ltor)
 746 {
 747
 748         return (0);
 749 }
 750
 751 static int
 752 bcmfb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
 753 {
 754         int bytes, col, i, j, k, row;
 755         struct bcmsc_softc *sc;
 756         u_char *p;
 757         uint8_t *addr, fg, bg, color;
 758         uint16_t rgb;
 759
 760         sc = (struct bcmsc_softc *)adp;
 761
 762         if (sc->fb_addr == 0)
 763                 return (0);
 764
 765         row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
 766         col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
 767         p = sc->font + c*BCMFB_FONT_HEIGHT;
 768         addr = (uint8_t *)sc->fb_addr
 769             + (row + sc->ymargin)*(sc->stride)
 770             + (sc->depth/8) * (col + sc->xmargin);
 771
 772         fg = a & 0xf ;
 773         bg = (a >> 4) & 0xf;
 774
 775         bytes = sc->depth / 8;
 776         for (i = 0; i < BCMFB_FONT_HEIGHT; i++) {
 777                 for (j = 0, k = 7; j < 8; j++, k--) {
 778                         if ((p[i] & (1 << k)) == 0)
 779                                 color = bg;
 780                         else
 781                                 color = fg;
 782
 783                         switch (sc->depth) {
 784                         case 32:
 785                         case 24:
 786                                 if (sc->fbswap) {
 787                                         addr[bytes * j + 0] =
 788                                             bcmfb_palette[color].b;
 789                                         addr[bytes * j + 1] =
 790                                             bcmfb_palette[color].g;
 791                                         addr[bytes * j + 2] =
 792                                             bcmfb_palette[color].r;
 793                                 } else {
 794                                         addr[bytes * j + 0] =
 795                                             bcmfb_palette[color].r;
 796                                         addr[bytes * j + 1] =
 797                                             bcmfb_palette[color].g;
 798                                         addr[bytes * j + 2] =
 799                                             bcmfb_palette[color].b;
 800                                 }
 801                                 if (sc->depth == 32)
 802                                         addr[bytes * j + 3] =
 803                                             bcmfb_palette[color].a;
 804                                 break;
 805                         case 16:
 806                                 rgb = (bcmfb_palette[color].r >> 3) << 11;
 807                                 rgb |= (bcmfb_palette[color].g >> 2) << 5;
 808                                 rgb |= (bcmfb_palette[color].b >> 3);
 809                                 addr[bytes * j] = rgb & 0xff;
 810                                 addr[bytes * j + 1] = (rgb >> 8) & 0xff;
 811                         default:
 812                                 /* Not supported yet */
 813                                 break;
 814                         }
 815                 }
 816
 817                 addr += (sc->stride);
 818         }
 819
 820         return (0);
 821 }
 822
 823 static int
 824 bcmfb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
 825 {
 826         int i;
 827
 828         for (i = 0; i < len; i++)
 829                 bcmfb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
 830
 831         return (0);
 832 }
 833
 834 static int
 835 bcmfb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
 836     uint32_t pixel_mask, int size, int width)
 837 {
 838
 839         return (0);
 840 }
 841
 842 /*
 843  * Define a stub keyboard driver in case one hasn't been
 844  * compiled into the kernel
 845  */
 846 #include <sys/kbio.h>
 847 #include <dev/kbd/kbdreg.h>
 848
 849 static int dummy_kbd_configure(int flags);
 850
 851 keyboard_switch_t bcmdummysw;
 852
 853 static int
 854 dummy_kbd_configure(int flags)
 855 {
 856
 857         return (0);
 858 }
 859 KEYBOARD_DRIVER(bcmdummy, bcmdummysw, dummy_kbd_configure);