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/bio.h>
  33 #include <sys/bus.h>
  34 #include <sys/conf.h>
  35 #include <sys/endian.h>
  36 #include <sys/kernel.h>
  37 #include <sys/kthread.h>
  38 #include <sys/lock.h>
  39 #include <sys/malloc.h>
  40 #include <sys/module.h>
  41 #include <sys/mutex.h>
  42 #include <sys/queue.h>
  43 #include <sys/resource.h>
  44 #include <sys/rman.h>
  45 #include <sys/time.h>
  46 #include <sys/timetc.h>
  47 #include <sys/fbio.h>
  48 #include <sys/consio.h>
  49
  50 #include <sys/kdb.h>
  51
  52 #include <machine/bus.h>
  53 #include <machine/cpu.h>
  54 #include <machine/cpufunc.h>
  55 #include <machine/resource.h>
  56 #include <machine/frame.h>
  57 #include <machine/intr.h>
  58
  59 #include <dev/fdt/fdt_common.h>
  60 #include <dev/ofw/ofw_bus.h>
  61 #include <dev/ofw/ofw_bus_subr.h>
  62
  63 #include <dev/fb/fbreg.h>
  64 #include <dev/syscons/syscons.h>
  65
  66 #include <arm/broadcom/bcm2835/bcm2835_mbox.h>
  67 #include <arm/broadcom/bcm2835/bcm2835_vcbus.h>
  68
  69 #include "mbox_if.h"
  70
  71 #define BCMFB_FONT_HEIGHT       16
  72
  73 struct argb {
  74         uint8_t         a;
  75         uint8_t         r;
  76         uint8_t         g;
  77         uint8_t         b;
  78 };
  79
  80 static struct argb bcmfb_palette[16] = {
  81         {0x00, 0x00, 0x00, 0x00},
  82         {0x00, 0x00, 0x00, 0xaa},
  83         {0x00, 0x00, 0xaa, 0x00},
  84         {0x00, 0x00, 0xaa, 0xaa},
  85         {0x00, 0xaa, 0x00, 0x00},
  86         {0x00, 0xaa, 0x00, 0xaa},
  87         {0x00, 0xaa, 0x55, 0x00},
  88         {0x00, 0xaa, 0xaa, 0xaa},
  89         {0x00, 0x55, 0x55, 0x55},
  90         {0x00, 0x55, 0x55, 0xff},
  91         {0x00, 0x55, 0xff, 0x55},
  92         {0x00, 0x55, 0xff, 0xff},
  93         {0x00, 0xff, 0x55, 0x55},
  94         {0x00, 0xff, 0x55, 0xff},
  95         {0x00, 0xff, 0xff, 0x55},
  96         {0x00, 0xff, 0xff, 0xff}
  97 };
  98
  99 /* mouse pointer from dev/syscons/scgfbrndr.c */
 100 static u_char mouse_pointer[16] = {
 101         0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
 102         0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
 103 };
 104
 105 #define FB_WIDTH                640
 106 #define FB_HEIGHT               480
 107 #define FB_DEPTH                24
 108
 109 struct bcm_fb_config {
 110         uint32_t        xres;
 111         uint32_t        yres;
 112         uint32_t        vxres;
 113         uint32_t        vyres;
 114         uint32_t        pitch;
 115         uint32_t        bpp;
 116         uint32_t        xoffset;
 117         uint32_t        yoffset;
 118         /* Filled by videocore */
 119         uint32_t        base;
 120         uint32_t        screen_size;
 121 };
 122
 123 struct bcmsc_softc {
 124         device_t                dev;
 125         struct cdev *           cdev;
 126         struct mtx              mtx;
 127         bus_dma_tag_t           dma_tag;
 128         bus_dmamap_t            dma_map;
 129         struct bcm_fb_config*   fb_config;
 130         bus_addr_t              fb_config_phys;
 131         struct intr_config_hook init_hook;
 132
 133 };
 134
 135 struct video_adapter_softc {
 136         /* Videoadpater part */
 137         video_adapter_t va;
 138         int             console;
 139
 140         intptr_t        fb_addr;
 141         intptr_t        fb_paddr;
 142         unsigned int    fb_size;
 143
 144         unsigned int    height;
 145         unsigned int    width;
 146         unsigned int    depth;
 147         unsigned int    stride;
 148
 149         unsigned int    xmargin;
 150         unsigned int    ymargin;
 151
 152         unsigned char   *font;
 153         int             initialized;
 154 };
 155
 156 static struct bcmsc_softc *bcmsc_softc;
 157 static struct video_adapter_softc va_softc;
 158
 159 #define bcm_fb_lock(_sc)        mtx_lock(&(_sc)->mtx)
 160 #define bcm_fb_unlock(_sc)      mtx_unlock(&(_sc)->mtx)
 161 #define bcm_fb_lock_assert(sc)  mtx_assert(&(_sc)->mtx, MA_OWNED)
 162
 163 static int bcm_fb_probe(device_t);
 164 static int bcm_fb_attach(device_t);
 165 static void bcm_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err);
 166 static void bcmfb_update_margins(video_adapter_t *adp);
 167 static int bcmfb_configure(int);
 168
 169 static void
 170 bcm_fb_init(void *arg)
 171 {
 172         struct bcmsc_softc *sc = arg;
 173         struct video_adapter_softc *va_sc = &va_softc;
 174         int err;
 175         volatile struct bcm_fb_config*  fb_config = sc->fb_config;
 176         phandle_t node;
 177         pcell_t cell;
 178         device_t mbox;
 179
 180         node = ofw_bus_get_node(sc->dev);
 181
 182         fb_config->xres = 0;
 183         fb_config->yres = 0;
 184         fb_config->bpp = 0;
 185
 186         if ((OF_getprop(node, "broadcom,width", &cell, sizeof(cell))) > 0)
 187                 fb_config->xres = (int)fdt32_to_cpu(cell);
 188         if (fb_config->xres == 0)
 189                 fb_config->xres = FB_WIDTH;
 190
 191         if ((OF_getprop(node, "broadcom,height", &cell, sizeof(cell))) > 0)
 192                 fb_config->yres = (uint32_t)fdt32_to_cpu(cell);
 193         if (fb_config->yres == 0)
 194                 fb_config->yres = FB_HEIGHT;
 195
 196         if ((OF_getprop(node, "broadcom,depth", &cell, sizeof(cell))) > 0)
 197                 fb_config->bpp = (uint32_t)fdt32_to_cpu(cell);
 198         if (fb_config->bpp == 0)
 199                 fb_config->bpp = FB_DEPTH;
 200
 201         fb_config->vxres = 0;
 202         fb_config->vyres = 0;
 203         fb_config->xoffset = 0;
 204         fb_config->yoffset = 0;
 205         fb_config->base = 0;
 206         fb_config->pitch = 0;
 207         fb_config->screen_size = 0;
 208
 209         bus_dmamap_sync(sc->dma_tag, sc->dma_map,
 210                 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
 211
 212         mbox = devclass_get_device(devclass_find("mbox"), 0);
 213         if (mbox) {
 214                 MBOX_WRITE(mbox, BCM2835_MBOX_CHAN_FB, sc->fb_config_phys);
 215                 MBOX_READ(mbox, BCM2835_MBOX_CHAN_FB, &err);
 216         }
 217         bus_dmamap_sync(sc->dma_tag, sc->dma_map,
 218                 BUS_DMASYNC_POSTREAD);
 219
 220         if (fb_config->base != 0) {
 221                 device_printf(sc->dev, "%dx%d(%dx%d@%d,%d) %dbpp\n",
 222                         fb_config->xres, fb_config->yres,
 223                         fb_config->vxres, fb_config->vyres,
 224                         fb_config->xoffset, fb_config->yoffset,
 225                         fb_config->bpp);
 226
 227
 228                 device_printf(sc->dev, "pitch %d, base 0x%08x, screen_size %d\n",
 229                         fb_config->pitch, fb_config->base,
 230                         fb_config->screen_size);
 231
 232                 va_sc->fb_addr = (intptr_t)pmap_mapdev(fb_config->base, fb_config->screen_size);
 233                 va_sc->fb_paddr = fb_config->base;
 234                 va_sc->fb_size = fb_config->screen_size;
 235                 va_sc->depth = fb_config->bpp;
 236                 va_sc->stride = fb_config->pitch;
 237
 238                 va_sc->width = fb_config->xres;
 239                 va_sc->height = fb_config->yres;
 240                 bcmfb_update_margins(&va_sc->va);
 241         }
 242         else {
 243                 device_printf(sc->dev, "Failed to set framebuffer info\n");
 244                 return;
 245         }
 246
 247         config_intrhook_disestablish(&sc->init_hook);
 248 }
 249
 250 static int
 251 bcm_fb_probe(device_t dev)
 252 {
 253         int error = 0;
 254
 255         if (!ofw_bus_is_compatible(dev, "broadcom,bcm2835-fb"))
 256                 return (ENXIO);
 257
 258         device_set_desc(dev, "BCM2835 framebuffer device");
 259
 260         error = sc_probe_unit(device_get_unit(dev),
 261             device_get_flags(dev) | SC_AUTODETECT_KBD);
 262         if (error != 0)
 263                 return (error);
 264
 265
 266         return (BUS_PROBE_DEFAULT);
 267 }
 268
 269 static int
 270 bcm_fb_attach(device_t dev)
 271 {
 272         struct bcmsc_softc *sc = device_get_softc(dev);
 273         int dma_size = sizeof(struct bcm_fb_config);
 274         int err;
 275
 276         if (bcmsc_softc)
 277                 return (ENXIO);
 278
 279         bcmsc_softc = sc;
 280
 281         sc->dev = dev;
 282         mtx_init(&sc->mtx, "bcm2835fb", "fb", MTX_DEF);
 283
 284         err = bus_dma_tag_create(
 285             bus_get_dma_tag(sc->dev),
 286             PAGE_SIZE, 0,               /* alignment, boundary */
 287             BUS_SPACE_MAXADDR_32BIT,    /* lowaddr */
 288             BUS_SPACE_MAXADDR,          /* highaddr */
 289             NULL, NULL,                 /* filter, filterarg */
 290             dma_size, 1,                /* maxsize, nsegments */
 291             dma_size, 0,                /* maxsegsize, flags */
 292             NULL, NULL,                 /* lockfunc, lockarg */
 293             &sc->dma_tag);
 294
 295         err = bus_dmamem_alloc(sc->dma_tag, (void **)&sc->fb_config,
 296             0, &sc->dma_map);
 297         if (err) {
 298                 device_printf(dev, "cannot allocate framebuffer\n");
 299                 goto fail;
 300         }
 301
 302         err = bus_dmamap_load(sc->dma_tag, sc->dma_map, sc->fb_config,
 303             dma_size, bcm_fb_dmamap_cb, &sc->fb_config_phys, BUS_DMA_NOWAIT);
 304
 305         if (err) {
 306                 device_printf(dev, "cannot load DMA map\n");
 307                 goto fail;
 308         }
 309
 310         err = (sc_attach_unit(device_get_unit(dev),
 311             device_get_flags(dev) | SC_AUTODETECT_KBD));
 312
 313         if (err) {
 314                 device_printf(dev, "failed to attach syscons\n");
 315                 goto fail;
 316         }
 317
 318         /*
 319          * We have to wait until interrupts are enabled.
 320          * Mailbox relies on it to get data from VideoCore
 321          */
 322         sc->init_hook.ich_func = bcm_fb_init;
 323         sc->init_hook.ich_arg = sc;
 324
 325         if (config_intrhook_establish(&sc->init_hook) != 0) {
 326                 device_printf(dev, "failed to establish intrhook\n");
 327                 return (ENOMEM);
 328         }
 329
 330         return (0);
 331
 332 fail:
 333         return (ENXIO);
 334 }
 335
 336
 337 static void
 338 bcm_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
 339 {
 340         bus_addr_t *addr;
 341
 342         if (err)
 343                 return;
 344
 345         addr = (bus_addr_t*)arg;
 346         *addr = PHYS_TO_VCBUS(segs[0].ds_addr);
 347 }
 348
 349 static device_method_t bcm_fb_methods[] = {
 350         /* Device interface */
 351         DEVMETHOD(device_probe,         bcm_fb_probe),
 352         DEVMETHOD(device_attach,        bcm_fb_attach),
 353
 354         { 0, 0 }
 355 };
 356
 357 static devclass_t bcm_fb_devclass;
 358
 359 static driver_t bcm_fb_driver = {
 360         "fb",
 361         bcm_fb_methods,
 362         sizeof(struct bcmsc_softc),
 363 };
 364
 365 DRIVER_MODULE(bcm2835fb, fdtbus, bcm_fb_driver, bcm_fb_devclass, 0, 0);
 366
 367 /*
 368  * Video driver routines and glue.
 369  */
 370 static vi_probe_t               bcmfb_probe;
 371 static vi_init_t                bcmfb_init;
 372 static vi_get_info_t            bcmfb_get_info;
 373 static vi_query_mode_t          bcmfb_query_mode;
 374 static vi_set_mode_t            bcmfb_set_mode;
 375 static vi_save_font_t           bcmfb_save_font;
 376 static vi_load_font_t           bcmfb_load_font;
 377 static vi_show_font_t           bcmfb_show_font;
 378 static vi_save_palette_t        bcmfb_save_palette;
 379 static vi_load_palette_t        bcmfb_load_palette;
 380 static vi_set_border_t          bcmfb_set_border;
 381 static vi_save_state_t          bcmfb_save_state;
 382 static vi_load_state_t          bcmfb_load_state;
 383 static vi_set_win_org_t         bcmfb_set_win_org;
 384 static vi_read_hw_cursor_t      bcmfb_read_hw_cursor;
 385 static vi_set_hw_cursor_t       bcmfb_set_hw_cursor;
 386 static vi_set_hw_cursor_shape_t bcmfb_set_hw_cursor_shape;
 387 static vi_blank_display_t       bcmfb_blank_display;
 388 static vi_mmap_t                bcmfb_mmap;
 389 static vi_ioctl_t               bcmfb_ioctl;
 390 static vi_clear_t               bcmfb_clear;
 391 static vi_fill_rect_t           bcmfb_fill_rect;
 392 static vi_bitblt_t              bcmfb_bitblt;
 393 static vi_diag_t                bcmfb_diag;
 394 static vi_save_cursor_palette_t bcmfb_save_cursor_palette;
 395 static vi_load_cursor_palette_t bcmfb_load_cursor_palette;
 396 static vi_copy_t                bcmfb_copy;
 397 static vi_putp_t                bcmfb_putp;
 398 static vi_putc_t                bcmfb_putc;
 399 static vi_puts_t                bcmfb_puts;
 400 static vi_putm_t                bcmfb_putm;
 401
 402 static video_switch_t bcmfbvidsw = {
 403         .probe                  = bcmfb_probe,
 404         .init                   = bcmfb_init,
 405         .get_info               = bcmfb_get_info,
 406         .query_mode             = bcmfb_query_mode,
 407         .set_mode               = bcmfb_set_mode,
 408         .save_font              = bcmfb_save_font,
 409         .load_font              = bcmfb_load_font,
 410         .show_font              = bcmfb_show_font,
 411         .save_palette           = bcmfb_save_palette,
 412         .load_palette           = bcmfb_load_palette,
 413         .set_border             = bcmfb_set_border,
 414         .save_state             = bcmfb_save_state,
 415         .load_state             = bcmfb_load_state,
 416         .set_win_org            = bcmfb_set_win_org,
 417         .read_hw_cursor         = bcmfb_read_hw_cursor,
 418         .set_hw_cursor          = bcmfb_set_hw_cursor,
 419         .set_hw_cursor_shape    = bcmfb_set_hw_cursor_shape,
 420         .blank_display          = bcmfb_blank_display,
 421         .mmap                   = bcmfb_mmap,
 422         .ioctl                  = bcmfb_ioctl,
 423         .clear                  = bcmfb_clear,
 424         .fill_rect              = bcmfb_fill_rect,
 425         .bitblt                 = bcmfb_bitblt,
 426         .diag                   = bcmfb_diag,
 427         .save_cursor_palette    = bcmfb_save_cursor_palette,
 428         .load_cursor_palette    = bcmfb_load_cursor_palette,
 429         .copy                   = bcmfb_copy,
 430         .putp                   = bcmfb_putp,
 431         .putc                   = bcmfb_putc,
 432         .puts                   = bcmfb_puts,
 433         .putm                   = bcmfb_putm,
 434 };
 435
 436 VIDEO_DRIVER(bcmfb, bcmfbvidsw, bcmfb_configure);
 437
 438 static vr_init_t bcmrend_init;
 439 static vr_clear_t bcmrend_clear;
 440 static vr_draw_border_t bcmrend_draw_border;
 441 static vr_draw_t bcmrend_draw;
 442 static vr_set_cursor_t bcmrend_set_cursor;
 443 static vr_draw_cursor_t bcmrend_draw_cursor;
 444 static vr_blink_cursor_t bcmrend_blink_cursor;
 445 static vr_set_mouse_t bcmrend_set_mouse;
 446 static vr_draw_mouse_t bcmrend_draw_mouse;
 447
 448 /*
 449  * We use our own renderer; this is because we must emulate a hardware
 450  * cursor.
 451  */
 452 static sc_rndr_sw_t bcmrend = {
 453         bcmrend_init,
 454         bcmrend_clear,
 455         bcmrend_draw_border,
 456         bcmrend_draw,
 457         bcmrend_set_cursor,
 458         bcmrend_draw_cursor,
 459         bcmrend_blink_cursor,
 460         bcmrend_set_mouse,
 461         bcmrend_draw_mouse
 462 };
 463
 464 RENDERER(bcmfb, 0, bcmrend, gfb_set);
 465 RENDERER_MODULE(bcmfb, gfb_set);
 466
 467 static void
 468 bcmrend_init(scr_stat* scp)
 469 {
 470 }
 471
 472 static void
 473 bcmrend_clear(scr_stat* scp, int c, int attr)
 474 {
 475 }
 476
 477 static void
 478 bcmrend_draw_border(scr_stat* scp, int color)
 479 {
 480 }
 481
 482 static void
 483 bcmrend_draw(scr_stat* scp, int from, int count, int flip)
 484 {
 485         video_adapter_t* adp = scp->sc->adp;
 486         int i, c, a;
 487
 488         if (!flip) {
 489                 /* Normal printing */
 490                 vidd_puts(adp, from, (uint16_t*)sc_vtb_pointer(&scp->vtb, from), count);
 491         } else {
 492                 /* This is for selections and such: invert the color attribute */
 493                 for (i = count; i-- > 0; ++from) {
 494                         c = sc_vtb_getc(&scp->vtb, from);
 495                         a = sc_vtb_geta(&scp->vtb, from) >> 8;
 496                         vidd_putc(adp, from, c, (a >> 4) | ((a & 0xf) << 4));
 497                 }
 498         }
 499 }
 500
 501 static void
 502 bcmrend_set_cursor(scr_stat* scp, int base, int height, int blink)
 503 {
 504 }
 505
 506 static void
 507 bcmrend_draw_cursor(scr_stat* scp, int off, int blink, int on, int flip)
 508 {
 509         video_adapter_t* adp = scp->sc->adp;
 510         struct video_adapter_softc *sc;
 511         int row, col;
 512         uint8_t *addr;
 513         int i, j, bytes;
 514
 515         sc = (struct video_adapter_softc *)adp;
 516
 517         if (scp->curs_attr.height <= 0)
 518                 return;
 519
 520         if (sc->fb_addr == 0)
 521                 return;
 522
 523         if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
 524                 return;
 525
 526         /* calculate the coordinates in the video buffer */
 527         row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
 528         col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
 529
 530         addr = (uint8_t *)sc->fb_addr
 531             + (row + sc->ymargin)*(sc->stride)
 532             + (sc->depth/8) * (col + sc->xmargin);
 533
 534         bytes = sc->depth/8;
 535
 536         /* our cursor consists of simply inverting the char under it */
 537         for (i = 0; i < adp->va_info.vi_cheight; i++) {
 538                 for (j = 0; j < adp->va_info.vi_cwidth; j++) {
 539                         switch (sc->depth) {
 540                         case 32:
 541                         case 24:
 542                                 addr[bytes*j + 2] ^= 0xff;
 543                                 /* FALLTHROUGH */
 544                         case 16:
 545                                 addr[bytes*j + 1] ^= 0xff;
 546                                 addr[bytes*j] ^= 0xff;
 547                                 break;
 548                         default:
 549                                 break;
 550                         }
 551                 }
 552
 553                 addr += sc->stride;
 554         }
 555 }
 556
 557 static void
 558 bcmrend_blink_cursor(scr_stat* scp, int at, int flip)
 559 {
 560 }
 561
 562 static void
 563 bcmrend_set_mouse(scr_stat* scp)
 564 {
 565 }
 566
 567 static void
 568 bcmrend_draw_mouse(scr_stat* scp, int x, int y, int on)
 569 {
 570         vidd_putm(scp->sc->adp, x, y, mouse_pointer, 0xffffffff, 16, 8);
 571 }
 572
 573 static uint16_t bcmfb_static_window[ROW*COL];
 574 extern u_char dflt_font_16[];
 575
 576 /*
 577  * Update videoadapter settings after changing resolution
 578  */
 579 static void
 580 bcmfb_update_margins(video_adapter_t *adp)
 581 {
 582         struct video_adapter_softc *sc;
 583         video_info_t *vi;
 584
 585         sc = (struct video_adapter_softc *)adp;
 586         vi = &adp->va_info;
 587
 588         sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
 589         sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
 590 }
 591
 592 static int
 593 bcmfb_configure(int flags)
 594 {
 595         struct video_adapter_softc *va_sc;
 596
 597         va_sc = &va_softc;
 598         phandle_t display, root;
 599         pcell_t cell;
 600
 601         if (va_sc->initialized)
 602                 return (0);
 603
 604         va_sc->width = 0;
 605         va_sc->height = 0;
 606
 607         /*
 608          * It seems there is no way to let syscons framework know
 609          * that framebuffer resolution has changed. So just try
 610          * to fetch data from FDT and go with defaults if failed
 611          */
 612         root = OF_finddevice("/");
 613         if ((root != 0) &&
 614             (display = fdt_find_compatible(root, "broadcom,bcm2835-fb", 1))) {
 615                 if ((OF_getprop(display, "broadcom,width",
 616                     &cell, sizeof(cell))) > 0)
 617                         va_sc->width = (int)fdt32_to_cpu(cell);
 618
 619                 if ((OF_getprop(display, "broadcom,height",
 620                     &cell, sizeof(cell))) > 0)
 621                         va_sc->height = (int)fdt32_to_cpu(cell);
 622         }
 623
 624         if (va_sc->width == 0)
 625                 va_sc->width = FB_WIDTH;
 626         if (va_sc->height == 0)
 627                 va_sc->height = FB_HEIGHT;
 628
 629         bcmfb_init(0, &va_sc->va, 0);
 630
 631         va_sc->initialized = 1;
 632
 633         return (0);
 634 }
 635
 636 static int
 637 bcmfb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
 638 {
 639
 640         return (0);
 641 }
 642
 643 static int
 644 bcmfb_init(int unit, video_adapter_t *adp, int flags)
 645 {
 646         struct video_adapter_softc *sc;
 647         video_info_t *vi;
 648
 649         sc = (struct video_adapter_softc *)adp;
 650         vi = &adp->va_info;
 651
 652         vid_init_struct(adp, "bcmfb", -1, unit);
 653
 654         sc->font = dflt_font_16;
 655         vi->vi_cheight = BCMFB_FONT_HEIGHT;
 656         vi->vi_cwidth = 8;
 657
 658         vi->vi_width = sc->width/8;
 659         vi->vi_height = sc->height/vi->vi_cheight;
 660
 661         /*
 662          * Clamp width/height to syscons maximums
 663          */
 664         if (vi->vi_width > COL)
 665                 vi->vi_width = COL;
 666         if (vi->vi_height > ROW)
 667                 vi->vi_height = ROW;
 668
 669         sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
 670         sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
 671
 672
 673         adp->va_window = (vm_offset_t) bcmfb_static_window;
 674         adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
 675
 676         vid_register(&sc->va);
 677
 678         return (0);
 679 }
 680
 681 static int
 682 bcmfb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
 683 {
 684         bcopy(&adp->va_info, info, sizeof(*info));
 685         return (0);
 686 }
 687
 688 static int
 689 bcmfb_query_mode(video_adapter_t *adp, video_info_t *info)
 690 {
 691         return (0);
 692 }
 693
 694 static int
 695 bcmfb_set_mode(video_adapter_t *adp, int mode)
 696 {
 697         return (0);
 698 }
 699
 700 static int
 701 bcmfb_save_font(video_adapter_t *adp, int page, int size, int width,
 702     u_char *data, int c, int count)
 703 {
 704         return (0);
 705 }
 706
 707 static int
 708 bcmfb_load_font(video_adapter_t *adp, int page, int size, int width,
 709     u_char *data, int c, int count)
 710 {
 711         struct video_adapter_softc *sc = (struct video_adapter_softc *)adp;
 712
 713         sc->font = data;
 714
 715         return (0);
 716 }
 717
 718 static int
 719 bcmfb_show_font(video_adapter_t *adp, int page)
 720 {
 721         return (0);
 722 }
 723
 724 static int
 725 bcmfb_save_palette(video_adapter_t *adp, u_char *palette)
 726 {
 727         return (0);
 728 }
 729
 730 static int
 731 bcmfb_load_palette(video_adapter_t *adp, u_char *palette)
 732 {
 733         return (0);
 734 }
 735
 736 static int
 737 bcmfb_set_border(video_adapter_t *adp, int border)
 738 {
 739         return (bcmfb_blank_display(adp, border));
 740 }
 741
 742 static int
 743 bcmfb_save_state(video_adapter_t *adp, void *p, size_t size)
 744 {
 745         return (0);
 746 }
 747
 748 static int
 749 bcmfb_load_state(video_adapter_t *adp, void *p)
 750 {
 751         return (0);
 752 }
 753
 754 static int
 755 bcmfb_set_win_org(video_adapter_t *adp, off_t offset)
 756 {
 757         return (0);
 758 }
 759
 760 static int
 761 bcmfb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
 762 {
 763         *col = *row = 0;
 764
 765         return (0);
 766 }
 767
 768 static int
 769 bcmfb_set_hw_cursor(video_adapter_t *adp, int col, int row)
 770 {
 771         return (0);
 772 }
 773
 774 static int
 775 bcmfb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
 776     int celsize, int blink)
 777 {
 778         return (0);
 779 }
 780
 781 static int
 782 bcmfb_blank_display(video_adapter_t *adp, int mode)
 783 {
 784
 785         struct video_adapter_softc *sc;
 786
 787         sc = (struct video_adapter_softc *)adp;
 788         if (sc && sc->fb_addr)
 789                 memset((void*)sc->fb_addr, 0, sc->fb_size);
 790
 791         return (0);
 792 }
 793
 794 static int
 795 bcmfb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
 796     int prot, vm_memattr_t *memattr)
 797 {
 798         struct video_adapter_softc *sc;
 799
 800         sc = (struct video_adapter_softc *)adp;
 801
 802         /*
 803          * This might be a legacy VGA mem request: if so, just point it at the
 804          * framebuffer, since it shouldn't be touched
 805          */
 806         if (offset < sc->stride*sc->height) {
 807                 *paddr = sc->fb_paddr + offset;
 808                 return (0);
 809         }
 810
 811         return (EINVAL);
 812 }
 813
 814 static int
 815 bcmfb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
 816 {
 817         struct video_adapter_softc *sc;
 818         struct fbtype *fb;
 819
 820         sc = (struct video_adapter_softc *)adp;
 821
 822         switch (cmd) {
 823         case FBIOGTYPE:
 824                 fb = (struct fbtype *)data;
 825                 fb->fb_type = FBTYPE_PCIMISC;
 826                 fb->fb_height = sc->height;
 827                 fb->fb_width = sc->width;
 828                 fb->fb_depth = sc->depth;
 829                 if (sc->depth <= 1 || sc->depth > 8)
 830                         fb->fb_cmsize = 0;
 831                 else
 832                         fb->fb_cmsize = 1 << sc->depth;
 833                 fb->fb_size = sc->fb_size;
 834                 break;
 835         default:
 836                 return (fb_commonioctl(adp, cmd, data));
 837         }
 838
 839         return (0);
 840 }
 841
 842 static int
 843 bcmfb_clear(video_adapter_t *adp)
 844 {
 845
 846         return (bcmfb_blank_display(adp, 0));
 847 }
 848
 849 static int
 850 bcmfb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 851 {
 852
 853         return (0);
 854 }
 855
 856 static int
 857 bcmfb_bitblt(video_adapter_t *adp, ...)
 858 {
 859
 860         return (0);
 861 }
 862
 863 static int
 864 bcmfb_diag(video_adapter_t *adp, int level)
 865 {
 866
 867         return (0);
 868 }
 869
 870 static int
 871 bcmfb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
 872 {
 873
 874         return (0);
 875 }
 876
 877 static int
 878 bcmfb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
 879 {
 880
 881         return (0);
 882 }
 883
 884 static int
 885 bcmfb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
 886 {
 887
 888         return (0);
 889 }
 890
 891 static int
 892 bcmfb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
 893     int size, int bpp, int bit_ltor, int byte_ltor)
 894 {
 895
 896         return (0);
 897 }
 898
 899 static int
 900 bcmfb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
 901 {
 902         struct video_adapter_softc *sc;
 903         int row;
 904         int col;
 905         int i, j, k;
 906         uint8_t *addr;
 907         u_char *p;
 908         uint8_t fg, bg, color;
 909         uint16_t rgb;
 910
 911         sc = (struct video_adapter_softc *)adp;
 912
 913         if (sc->fb_addr == 0)
 914                 return (0);
 915
 916         row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
 917         col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
 918         p = sc->font + c*BCMFB_FONT_HEIGHT;
 919         addr = (uint8_t *)sc->fb_addr
 920             + (row + sc->ymargin)*(sc->stride)
 921             + (sc->depth/8) * (col + sc->xmargin);
 922
 923         fg = a & 0xf ;
 924         bg = (a >> 4) & 0xf;
 925
 926         for (i = 0; i < BCMFB_FONT_HEIGHT; i++) {
 927                 for (j = 0, k = 7; j < 8; j++, k--) {
 928                         if ((p[i] & (1 << k)) == 0)
 929                                 color = bg;
 930                         else
 931                                 color = fg;
 932
 933                         switch (sc->depth) {
 934                         case 32:
 935                                 addr[4*j+0] = bcmfb_palette[color].r;
 936                                 addr[4*j+1] = bcmfb_palette[color].g;
 937                                 addr[4*j+2] = bcmfb_palette[color].b;
 938                                 addr[4*j+3] = bcmfb_palette[color].a;
 939                                 break;
 940                         case 24:
 941                                 addr[3*j] = bcmfb_palette[color].r;
 942                                 addr[3*j+1] = bcmfb_palette[color].g;
 943                                 addr[3*j+2] = bcmfb_palette[color].b;
 944                                 break;
 945                         case 16:
 946                                 rgb = (bcmfb_palette[color].r >> 3) << 11;
 947                                 rgb |= (bcmfb_palette[color].g >> 2) << 5;
 948                                 rgb |= (bcmfb_palette[color].b >> 3);
 949                                 addr[2*j] = rgb & 0xff;
 950                                 addr[2*j + 1] = (rgb >> 8) & 0xff;
 951                         default:
 952                                 /* Not supported yet */
 953                                 break;
 954                         }
 955                 }
 956
 957                 addr += (sc->stride);
 958         }
 959
 960         return (0);
 961 }
 962
 963 static int
 964 bcmfb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
 965 {
 966         int i;
 967
 968         for (i = 0; i < len; i++)
 969                 bcmfb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
 970
 971         return (0);
 972 }
 973
 974 static int
 975 bcmfb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
 976     uint32_t pixel_mask, int size, int width)
 977 {
 978
 979         return (0);
 980 }
 981
 982 /*
 983  * Define a stub keyboard driver in case one hasn't been
 984  * compiled into the kernel
 985  */
 986 #include <sys/kbio.h>
 987 #include <dev/kbd/kbdreg.h>
 988
 989 static int dummy_kbd_configure(int flags);
 990
 991 keyboard_switch_t bcmdummysw;
 992
 993 static int
 994 dummy_kbd_configure(int flags)
 995 {
 996
 997         return (0);
 998 }
 999 KEYBOARD_DRIVER(bcmdummy, bcmdummysw, dummy_kbd_configure);