The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/arm/versatile/versatile_clcd.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2012-2017 Oleksandr Tymoshenko <gonzo@freebsd.org>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD: stable/11/sys/arm/versatile/versatile_clcd.c 331402 2018-03-23 01:37:31Z gonzo $");
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/bus.h>
   35 #include <sys/kernel.h>
   36 #include <sys/module.h>
   37 #include <sys/malloc.h>
   38 #include <sys/rman.h>
   39 #include <sys/fbio.h>
   40 #include <sys/consio.h>
   41 #include <sys/kdb.h>
   42 
   43 #include <machine/bus.h>
   44 #include <machine/cpu.h>
   45 #include <machine/intr.h>
   46 
   47 #include <dev/fdt/fdt_common.h>
   48 #include <dev/ofw/openfirm.h>
   49 #include <dev/ofw/ofw_bus.h>
   50 #include <dev/ofw/ofw_bus_subr.h>
   51 
   52 #include <dev/fb/fbreg.h>
   53 #include <dev/syscons/syscons.h>
   54 
   55 #include <arm/versatile/versatile_scm.h>
   56 
   57 #include <machine/bus.h>
   58 
   59 #define PL110_VENDOR_ARM926PXP  1
   60 
   61 #define CLCD_MODE_RGB888        0x0
   62 #define CLCD_MODE_RGB555        0x01
   63 #define CLCD_MODE_RBG565        0x02
   64 #define CLCD_MODE_RGB565        0x03
   65 
   66 #define CLCDC_TIMING0           0x00
   67 #define CLCDC_TIMING1           0x04
   68 #define CLCDC_TIMING2           0x08
   69 #define CLCDC_TIMING3           0x0C
   70 #define CLCDC_TIMING3           0x0C
   71 #define CLCDC_UPBASE            0x10
   72 #define CLCDC_LPBASE            0x14
   73 #ifdef PL110_VENDOR_ARM926PXP
   74 #define CLCDC_CONTROL           0x18
   75 #define CLCDC_IMSC              0x1C
   76 #else
   77 #define CLCDC_IMSC              0x18
   78 #define CLCDC_CONTROL           0x1C
   79 #endif
   80 #define         CONTROL_WATERMARK       (1 << 16)
   81 #define         CONTROL_VCOMP_VS        (0 << 12)
   82 #define         CONTROL_VCOMP_BP        (1 << 12)
   83 #define         CONTROL_VCOMP_SAV       (2 << 12)
   84 #define         CONTROL_VCOMP_FP        (3 << 12)
   85 #define         CONTROL_PWR             (1 << 11)
   86 #define         CONTROL_BEPO            (1 << 10)
   87 #define         CONTROL_BEBO            (1 << 9)
   88 #define         CONTROL_BGR             (1 << 8)
   89 #define         CONTROL_DUAL            (1 << 7)
   90 #define         CONTROL_MONO8           (1 << 6)
   91 #define         CONTROL_TFT             (1 << 5)
   92 #define         CONTROL_BW              (1 << 4)
   93 #define         CONTROL_BPP1            (0x00 << 1)
   94 #define         CONTROL_BPP2            (0x01 << 1)
   95 #define         CONTROL_BPP4            (0x02 << 1)
   96 #define         CONTROL_BPP8            (0x03 << 1)
   97 #define         CONTROL_BPP16           (0x04 << 1)
   98 #define         CONTROL_BPP24           (0x05 << 1)
   99 #define         CONTROL_EN      (1 << 0)
  100 #define CLCDC_RIS               0x20
  101 #define CLCDC_MIS               0x24
  102 #define         INTR_MBERR              (1 << 4)
  103 #define         INTR_VCOMP              (1 << 3)
  104 #define         INTR_LNB                (1 << 2)
  105 #define         INTR_FUF                (1 << 1)
  106 #define CLCDC_ICR               0x28
  107 
  108 #ifdef DEBUG
  109 #define dprintf(fmt, args...) do { printf("%s(): ", __func__);   \
  110     printf(fmt,##args); } while (0)
  111 #else
  112 #define dprintf(fmt, args...)
  113 #endif
  114 
  115 #define versatile_clcdc_read_4(sc, reg) \
  116         bus_read_4((sc)->mem_res, (reg))
  117 #define versatile_clcdc_write_4(sc, reg, val)   \
  118         bus_write_4((sc)->mem_res, (reg), (val))
  119 
  120 struct versatile_clcdc_softc {
  121         struct resource*        mem_res;
  122 
  123         struct mtx              mtx;
  124 
  125         int                     width;
  126         int                     height;
  127         int                     mode;
  128 
  129         bus_dma_tag_t           dma_tag;
  130         bus_dmamap_t            dma_map;
  131         bus_addr_t              fb_phys;
  132         uint8_t                 *fb_base;
  133 
  134 };
  135 
  136 struct video_adapter_softc {
  137         /* Videoadpater part */
  138         video_adapter_t va;
  139         int             console;
  140 
  141         intptr_t        fb_addr;
  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 struct argb {
  157         uint8_t         a;
  158         uint8_t         r;
  159         uint8_t         g;
  160         uint8_t         b;
  161 };
  162 
  163 static struct argb versatilefb_palette[16] = {
  164         {0x00, 0x00, 0x00, 0x00},
  165         {0x00, 0x00, 0x00, 0xaa},
  166         {0x00, 0x00, 0xaa, 0x00},
  167         {0x00, 0x00, 0xaa, 0xaa},
  168         {0x00, 0xaa, 0x00, 0x00},
  169         {0x00, 0xaa, 0x00, 0xaa},
  170         {0x00, 0xaa, 0x55, 0x00},
  171         {0x00, 0xaa, 0xaa, 0xaa},
  172         {0x00, 0x55, 0x55, 0x55},
  173         {0x00, 0x55, 0x55, 0xff},
  174         {0x00, 0x55, 0xff, 0x55},
  175         {0x00, 0x55, 0xff, 0xff},
  176         {0x00, 0xff, 0x55, 0x55},
  177         {0x00, 0xff, 0x55, 0xff},
  178         {0x00, 0xff, 0xff, 0x55},
  179         {0x00, 0xff, 0xff, 0xff}
  180 };
  181 
  182 /* mouse pointer from dev/syscons/scgfbrndr.c */
  183 static u_char mouse_pointer[16] = {
  184         0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
  185         0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
  186 };
  187 
  188 #define FB_WIDTH                640
  189 #define FB_HEIGHT               480
  190 #define FB_DEPTH                16
  191 
  192 #define VERSATILE_FONT_HEIGHT   16
  193 
  194 static struct video_adapter_softc va_softc;
  195 
  196 static int versatilefb_configure(int);
  197 static void versatilefb_update_margins(video_adapter_t *adp);
  198 
  199 static void
  200 versatile_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
  201 {
  202         bus_addr_t *addr;
  203 
  204         if (err)
  205                 return;
  206 
  207         addr = (bus_addr_t*)arg;
  208         *addr = segs[0].ds_addr;
  209 }
  210 
  211 static int
  212 versatile_clcdc_probe(device_t dev)
  213 {
  214 
  215         if (!ofw_bus_status_okay(dev))
  216                 return (ENXIO);
  217 
  218         if (ofw_bus_is_compatible(dev, "arm,pl110")) {
  219                 device_set_desc(dev, "PL110 CLCD controller");
  220                 return (BUS_PROBE_DEFAULT);
  221         }
  222 
  223         return (ENXIO);
  224 }
  225 
  226 static int
  227 versatile_clcdc_attach(device_t dev)
  228 {
  229         struct versatile_clcdc_softc *sc = device_get_softc(dev);
  230         struct video_adapter_softc *va_sc = &va_softc;
  231         int err, rid;
  232         uint32_t reg;
  233         int clcdid;
  234         int dma_size;
  235 
  236         /* Request memory resources */
  237         rid = 0;
  238         sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
  239         if (sc->mem_res == NULL) {
  240                 device_printf(dev, "could not allocate memory resources\n");
  241                 return (ENXIO);
  242         }
  243 
  244         err = versatile_scm_reg_read_4(SCM_CLCD, &reg);
  245         if (err) {
  246                 device_printf(dev, "failed to read SCM register\n");
  247                 goto fail;
  248         }
  249         clcdid = (reg >> SCM_CLCD_CLCDID_SHIFT) & SCM_CLCD_CLCDID_MASK;
  250         switch (clcdid) {
  251                 case 31:
  252                         device_printf(dev, "QEMU VGA 640x480\n");
  253                         sc->width = 640;
  254                         sc->height = 480;
  255                         break;
  256                 default:
  257                         device_printf(dev, "Unsupported: %d\n", clcdid);
  258                         goto fail;
  259         }
  260 
  261         reg &= ~SCM_CLCD_LCD_MODE_MASK;
  262         reg |= CLCD_MODE_RGB565;
  263         sc->mode = CLCD_MODE_RGB565;
  264         versatile_scm_reg_write_4(SCM_CLCD, reg);
  265         dma_size = sc->width*sc->height*2;
  266  
  267         /*
  268          * Power on LCD
  269          */
  270         reg |= SCM_CLCD_PWR3V5VSWITCH | SCM_CLCD_NLCDIOON;
  271         versatile_scm_reg_write_4(SCM_CLCD, reg);
  272 
  273         /*
  274          * XXX: hardcoded timing for VGA. For other modes/panels
  275          * we need to keep table of timing register values
  276          */
  277         /*
  278          * XXX: set SYS_OSC1 
  279          */
  280         versatile_clcdc_write_4(sc, CLCDC_TIMING0, 0x3F1F3F9C);
  281         versatile_clcdc_write_4(sc, CLCDC_TIMING1, 0x090B61DF);
  282         versatile_clcdc_write_4(sc, CLCDC_TIMING2, 0x067F1800);
  283         /* XXX: timing 3? */
  284 
  285         /*
  286          * Now allocate framebuffer memory
  287          */
  288         err = bus_dma_tag_create(
  289             bus_get_dma_tag(dev),
  290             4, 0,               /* alignment, boundary */
  291             BUS_SPACE_MAXADDR_32BIT,    /* lowaddr */
  292             BUS_SPACE_MAXADDR,          /* highaddr */
  293             NULL, NULL,                 /* filter, filterarg */
  294             dma_size, 1,                /* maxsize, nsegments */
  295             dma_size, 0,                /* maxsegsize, flags */
  296             NULL, NULL,                 /* lockfunc, lockarg */
  297             &sc->dma_tag);
  298 
  299         err = bus_dmamem_alloc(sc->dma_tag, (void **)&sc->fb_base,
  300             0, &sc->dma_map);
  301         if (err) {
  302                 device_printf(dev, "cannot allocate framebuffer\n");
  303                 goto fail;
  304         }
  305 
  306         err = bus_dmamap_load(sc->dma_tag, sc->dma_map, sc->fb_base,
  307             dma_size, versatile_fb_dmamap_cb, &sc->fb_phys, BUS_DMA_NOWAIT);
  308 
  309         if (err) {
  310                 device_printf(dev, "cannot load DMA map\n");
  311                 goto fail;
  312         }
  313 
  314         /* Make sure it's blank */
  315         memset(sc->fb_base, 0x00, dma_size);
  316 
  317         versatile_clcdc_write_4(sc, CLCDC_UPBASE, sc->fb_phys);
  318 
  319         err = (sc_attach_unit(device_get_unit(dev),
  320             device_get_flags(dev) | SC_AUTODETECT_KBD));
  321 
  322         if (err) {
  323                 device_printf(dev, "failed to attach syscons\n");
  324                 goto fail;
  325         }
  326 
  327         /*
  328          * XXX: hardcoded for VGA
  329          */
  330         reg = CONTROL_VCOMP_BP | CONTROL_TFT | CONTROL_BGR | CONTROL_EN;
  331         reg |= CONTROL_BPP16;
  332         versatile_clcdc_write_4(sc, CLCDC_CONTROL, reg);
  333         DELAY(20);
  334         reg |= CONTROL_PWR;
  335         versatile_clcdc_write_4(sc, CLCDC_CONTROL, reg);
  336 
  337         va_sc->fb_addr = (vm_offset_t)sc->fb_base;
  338         va_sc->fb_size = dma_size;
  339         va_sc->width = sc->width;
  340         va_sc->height = sc->height;
  341         va_sc->depth = 16;
  342         va_sc->stride = sc->width * 2;
  343         versatilefb_update_margins(&va_sc->va);
  344 
  345         return (0);
  346 
  347 fail:
  348         if (sc->fb_base)
  349                 bus_dmamem_free(sc->dma_tag, sc->fb_base, sc->dma_map);
  350         if (sc->dma_tag)
  351                 bus_dma_tag_destroy(sc->dma_tag);
  352         return (err);
  353 }
  354 
  355 static device_method_t versatile_clcdc_methods[] = {
  356         DEVMETHOD(device_probe,         versatile_clcdc_probe),
  357         DEVMETHOD(device_attach,        versatile_clcdc_attach),
  358 
  359         DEVMETHOD_END
  360 };
  361 
  362 static driver_t versatile_clcdc_driver = {
  363         "clcdc",
  364         versatile_clcdc_methods,
  365         sizeof(struct versatile_clcdc_softc),
  366 };
  367 
  368 static devclass_t versatile_clcdc_devclass;
  369 
  370 DRIVER_MODULE(versatile_clcdc, simplebus, versatile_clcdc_driver, versatile_clcdc_devclass, 0, 0);
  371 
  372 /*
  373  * Video driver routines and glue.
  374  */
  375 static vi_probe_t               versatilefb_probe;
  376 static vi_init_t                versatilefb_init;
  377 static vi_get_info_t            versatilefb_get_info;
  378 static vi_query_mode_t          versatilefb_query_mode;
  379 static vi_set_mode_t            versatilefb_set_mode;
  380 static vi_save_font_t           versatilefb_save_font;
  381 static vi_load_font_t           versatilefb_load_font;
  382 static vi_show_font_t           versatilefb_show_font;
  383 static vi_save_palette_t        versatilefb_save_palette;
  384 static vi_load_palette_t        versatilefb_load_palette;
  385 static vi_set_border_t          versatilefb_set_border;
  386 static vi_save_state_t          versatilefb_save_state;
  387 static vi_load_state_t          versatilefb_load_state;
  388 static vi_set_win_org_t         versatilefb_set_win_org;
  389 static vi_read_hw_cursor_t      versatilefb_read_hw_cursor;
  390 static vi_set_hw_cursor_t       versatilefb_set_hw_cursor;
  391 static vi_set_hw_cursor_shape_t versatilefb_set_hw_cursor_shape;
  392 static vi_blank_display_t       versatilefb_blank_display;
  393 static vi_mmap_t                versatilefb_mmap;
  394 static vi_ioctl_t               versatilefb_ioctl;
  395 static vi_clear_t               versatilefb_clear;
  396 static vi_fill_rect_t           versatilefb_fill_rect;
  397 static vi_bitblt_t              versatilefb_bitblt;
  398 static vi_diag_t                versatilefb_diag;
  399 static vi_save_cursor_palette_t versatilefb_save_cursor_palette;
  400 static vi_load_cursor_palette_t versatilefb_load_cursor_palette;
  401 static vi_copy_t                versatilefb_copy;
  402 static vi_putp_t                versatilefb_putp;
  403 static vi_putc_t                versatilefb_putc;
  404 static vi_puts_t                versatilefb_puts;
  405 static vi_putm_t                versatilefb_putm;
  406 
  407 static video_switch_t versatilefbvidsw = {
  408         .probe                  = versatilefb_probe,
  409         .init                   = versatilefb_init,
  410         .get_info               = versatilefb_get_info,
  411         .query_mode             = versatilefb_query_mode,
  412         .set_mode               = versatilefb_set_mode,
  413         .save_font              = versatilefb_save_font,
  414         .load_font              = versatilefb_load_font,
  415         .show_font              = versatilefb_show_font,
  416         .save_palette           = versatilefb_save_palette,
  417         .load_palette           = versatilefb_load_palette,
  418         .set_border             = versatilefb_set_border,
  419         .save_state             = versatilefb_save_state,
  420         .load_state             = versatilefb_load_state,
  421         .set_win_org            = versatilefb_set_win_org,
  422         .read_hw_cursor         = versatilefb_read_hw_cursor,
  423         .set_hw_cursor          = versatilefb_set_hw_cursor,
  424         .set_hw_cursor_shape    = versatilefb_set_hw_cursor_shape,
  425         .blank_display          = versatilefb_blank_display,
  426         .mmap                   = versatilefb_mmap,
  427         .ioctl                  = versatilefb_ioctl,
  428         .clear                  = versatilefb_clear,
  429         .fill_rect              = versatilefb_fill_rect,
  430         .bitblt                 = versatilefb_bitblt,
  431         .diag                   = versatilefb_diag,
  432         .save_cursor_palette    = versatilefb_save_cursor_palette,
  433         .load_cursor_palette    = versatilefb_load_cursor_palette,
  434         .copy                   = versatilefb_copy,
  435         .putp                   = versatilefb_putp,
  436         .putc                   = versatilefb_putc,
  437         .puts                   = versatilefb_puts,
  438         .putm                   = versatilefb_putm,
  439 };
  440 
  441 VIDEO_DRIVER(versatilefb, versatilefbvidsw, versatilefb_configure);
  442 
  443 static vr_init_t clcdr_init;
  444 static vr_clear_t clcdr_clear;
  445 static vr_draw_border_t clcdr_draw_border;
  446 static vr_draw_t clcdr_draw;
  447 static vr_set_cursor_t clcdr_set_cursor;
  448 static vr_draw_cursor_t clcdr_draw_cursor;
  449 static vr_blink_cursor_t clcdr_blink_cursor;
  450 static vr_set_mouse_t clcdr_set_mouse;
  451 static vr_draw_mouse_t clcdr_draw_mouse;
  452 
  453 /*
  454  * We use our own renderer; this is because we must emulate a hardware
  455  * cursor.
  456  */
  457 static sc_rndr_sw_t clcdrend = {
  458         clcdr_init,
  459         clcdr_clear,
  460         clcdr_draw_border,
  461         clcdr_draw,
  462         clcdr_set_cursor,
  463         clcdr_draw_cursor,
  464         clcdr_blink_cursor,
  465         clcdr_set_mouse,
  466         clcdr_draw_mouse
  467 };
  468 
  469 RENDERER(versatilefb, 0, clcdrend, gfb_set);
  470 RENDERER_MODULE(versatilefb, gfb_set);
  471 
  472 static void
  473 clcdr_init(scr_stat* scp)
  474 {
  475 }
  476 
  477 static void
  478 clcdr_clear(scr_stat* scp, int c, int attr)
  479 {
  480 }
  481 
  482 static void
  483 clcdr_draw_border(scr_stat* scp, int color)
  484 {
  485 }
  486 
  487 static void
  488 clcdr_draw(scr_stat* scp, int from, int count, int flip)
  489 {
  490         video_adapter_t* adp = scp->sc->adp;
  491         int i, c, a;
  492 
  493         if (!flip) {
  494                 /* Normal printing */
  495                 vidd_puts(adp, from, (uint16_t*)sc_vtb_pointer(&scp->vtb, from), count);
  496         } else {        
  497                 /* This is for selections and such: invert the color attribute */
  498                 for (i = count; i-- > 0; ++from) {
  499                         c = sc_vtb_getc(&scp->vtb, from);
  500                         a = sc_vtb_geta(&scp->vtb, from) >> 8;
  501                         vidd_putc(adp, from, c, (a >> 4) | ((a & 0xf) << 4));
  502                 }
  503         }
  504 }
  505 
  506 static void
  507 clcdr_set_cursor(scr_stat* scp, int base, int height, int blink)
  508 {
  509 }
  510 
  511 static void
  512 clcdr_draw_cursor(scr_stat* scp, int off, int blink, int on, int flip)
  513 {
  514         video_adapter_t* adp = scp->sc->adp;
  515         struct video_adapter_softc *sc;
  516         int row, col;
  517         uint8_t *addr;
  518         int i,j;
  519 
  520         sc = (struct video_adapter_softc *)adp;
  521 
  522         if (scp->curs_attr.height <= 0)
  523                 return;
  524 
  525         if (sc->fb_addr == 0)
  526                 return;
  527 
  528         if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
  529                 return;
  530 
  531         /* calculate the coordinates in the video buffer */
  532         row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
  533         col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
  534 
  535         addr = (uint8_t *)sc->fb_addr
  536             + (row + sc->ymargin)*(sc->stride)
  537             + (sc->depth/8) * (col + sc->xmargin);
  538 
  539         /* our cursor consists of simply inverting the char under it */
  540         for (i = 0; i < adp->va_info.vi_cheight; i++) {
  541                 for (j = 0; j < adp->va_info.vi_cwidth; j++) {
  542 
  543                         addr[2*j] ^= 0xff;
  544                         addr[2*j + 1] ^= 0xff;
  545                 }
  546 
  547                 addr += sc->stride;
  548         }
  549 }
  550 
  551 static void
  552 clcdr_blink_cursor(scr_stat* scp, int at, int flip)
  553 {
  554 }
  555 
  556 static void
  557 clcdr_set_mouse(scr_stat* scp)
  558 {
  559 }
  560 
  561 static void
  562 clcdr_draw_mouse(scr_stat* scp, int x, int y, int on)
  563 {
  564         vidd_putm(scp->sc->adp, x, y, mouse_pointer, 0xffffffff, 16, 8);
  565 
  566 }
  567 
  568 static uint16_t versatilefb_static_window[ROW*COL];
  569 extern u_char dflt_font_16[];
  570 
  571 /*
  572  * Update videoadapter settings after changing resolution
  573  */
  574 static void
  575 versatilefb_update_margins(video_adapter_t *adp)
  576 {
  577         struct video_adapter_softc *sc;
  578         video_info_t *vi;
  579 
  580         sc = (struct video_adapter_softc *)adp;
  581         vi = &adp->va_info;
  582 
  583         sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
  584         sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
  585 }
  586 
  587 static int
  588 versatilefb_configure(int flags)
  589 {
  590         struct video_adapter_softc *va_sc;
  591 
  592         va_sc = &va_softc;
  593 
  594         if (va_sc->initialized)
  595                 return (0);
  596 
  597         va_sc->width = FB_WIDTH;
  598         va_sc->height = FB_HEIGHT;
  599         va_sc->depth = FB_DEPTH;
  600 
  601         versatilefb_init(0, &va_sc->va, 0);
  602 
  603         va_sc->initialized = 1;
  604 
  605         return (0);
  606 }
  607 
  608 static int
  609 versatilefb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
  610 {
  611 
  612         return (0);
  613 }
  614 
  615 static int
  616 versatilefb_init(int unit, video_adapter_t *adp, int flags)
  617 {
  618         struct video_adapter_softc *sc;
  619         video_info_t *vi;
  620 
  621         sc = (struct video_adapter_softc *)adp;
  622         vi = &adp->va_info;
  623 
  624         vid_init_struct(adp, "versatilefb", -1, unit);
  625 
  626         sc->font = dflt_font_16;
  627         vi->vi_cheight = VERSATILE_FONT_HEIGHT;
  628         vi->vi_cwidth = 8;
  629 
  630         vi->vi_width = sc->width/8;
  631         vi->vi_height = sc->height/vi->vi_cheight;
  632 
  633         /*
  634          * Clamp width/height to syscons maximums
  635          */
  636         if (vi->vi_width > COL)
  637                 vi->vi_width = COL;
  638         if (vi->vi_height > ROW)
  639                 vi->vi_height = ROW;
  640 
  641         sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
  642         sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
  643 
  644         adp->va_window = (vm_offset_t) versatilefb_static_window;
  645         adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
  646 
  647         vid_register(&sc->va);
  648 
  649         return (0);
  650 }
  651 
  652 static int
  653 versatilefb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
  654 {
  655         bcopy(&adp->va_info, info, sizeof(*info));
  656         return (0);
  657 }
  658 
  659 static int
  660 versatilefb_query_mode(video_adapter_t *adp, video_info_t *info)
  661 {
  662         return (0);
  663 }
  664 
  665 static int
  666 versatilefb_set_mode(video_adapter_t *adp, int mode)
  667 {
  668         return (0);
  669 }
  670 
  671 static int
  672 versatilefb_save_font(video_adapter_t *adp, int page, int size, int width,
  673     u_char *data, int c, int count)
  674 {
  675         return (0);
  676 }
  677 
  678 static int
  679 versatilefb_load_font(video_adapter_t *adp, int page, int size, int width,
  680     u_char *data, int c, int count)
  681 {
  682         struct video_adapter_softc *sc = (struct video_adapter_softc *)adp;
  683 
  684         sc->font = data;
  685 
  686         return (0);
  687 }
  688 
  689 static int
  690 versatilefb_show_font(video_adapter_t *adp, int page)
  691 {
  692         return (0);
  693 }
  694 
  695 static int
  696 versatilefb_save_palette(video_adapter_t *adp, u_char *palette)
  697 {
  698         return (0);
  699 }
  700 
  701 static int
  702 versatilefb_load_palette(video_adapter_t *adp, u_char *palette)
  703 {
  704         return (0);
  705 }
  706 
  707 static int
  708 versatilefb_set_border(video_adapter_t *adp, int border)
  709 {
  710         return (versatilefb_blank_display(adp, border));
  711 }
  712 
  713 static int
  714 versatilefb_save_state(video_adapter_t *adp, void *p, size_t size)
  715 {
  716         return (0);
  717 }
  718 
  719 static int
  720 versatilefb_load_state(video_adapter_t *adp, void *p)
  721 {
  722         return (0);
  723 }
  724 
  725 static int
  726 versatilefb_set_win_org(video_adapter_t *adp, off_t offset)
  727 {
  728         return (0);
  729 }
  730 
  731 static int
  732 versatilefb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
  733 {
  734         *col = *row = 0;
  735 
  736         return (0);
  737 }
  738 
  739 static int
  740 versatilefb_set_hw_cursor(video_adapter_t *adp, int col, int row)
  741 {
  742 
  743         return (0);
  744 }
  745 
  746 static int
  747 versatilefb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
  748     int celsize, int blink)
  749 {
  750         return (0);
  751 }
  752 
  753 static int
  754 versatilefb_blank_display(video_adapter_t *adp, int mode)
  755 {
  756 
  757         struct video_adapter_softc *sc;
  758 
  759         sc = (struct video_adapter_softc *)adp;
  760         if (sc && sc->fb_addr)
  761                 memset((void*)sc->fb_addr, 0, sc->fb_size);
  762 
  763         return (0);
  764 }
  765 
  766 static int
  767 versatilefb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
  768     int prot, vm_memattr_t *memattr)
  769 {
  770         struct video_adapter_softc *sc;
  771 
  772         sc = (struct video_adapter_softc *)adp;
  773 
  774         /*
  775          * This might be a legacy VGA mem request: if so, just point it at the
  776          * framebuffer, since it shouldn't be touched
  777          */
  778         if (offset < sc->stride*sc->height) {
  779                 *paddr = sc->fb_addr + offset;
  780                 return (0);
  781         }
  782 
  783         return (EINVAL);
  784 }
  785 
  786 static int
  787 versatilefb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
  788 {
  789 
  790         return (0);
  791 }
  792 
  793 static int
  794 versatilefb_clear(video_adapter_t *adp)
  795 {
  796 
  797         return (versatilefb_blank_display(adp, 0));
  798 }
  799 
  800 static int
  801 versatilefb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
  802 {
  803 
  804         return (0);
  805 }
  806 
  807 static int
  808 versatilefb_bitblt(video_adapter_t *adp, ...)
  809 {
  810 
  811         return (0);
  812 }
  813 
  814 static int
  815 versatilefb_diag(video_adapter_t *adp, int level)
  816 {
  817 
  818         return (0);
  819 }
  820 
  821 static int
  822 versatilefb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
  823 {
  824 
  825         return (0);
  826 }
  827 
  828 static int
  829 versatilefb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
  830 {
  831 
  832         return (0);
  833 }
  834 
  835 static int
  836 versatilefb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
  837 {
  838 
  839         return (0);
  840 }
  841 
  842 static int
  843 versatilefb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
  844     int size, int bpp, int bit_ltor, int byte_ltor)
  845 {
  846 
  847         return (0);
  848 }
  849 
  850 static int
  851 versatilefb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
  852 {
  853         struct video_adapter_softc *sc;
  854         int row;
  855         int col;
  856         int i, j, k;
  857         uint8_t *addr;
  858         u_char *p;
  859         uint8_t fg, bg, color;
  860         uint16_t rgb;
  861 
  862         sc = (struct video_adapter_softc *)adp;
  863 
  864         if (sc->fb_addr == 0)
  865                 return (0);
  866 
  867         if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
  868                 return (0);
  869 
  870         row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
  871         col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
  872         p = sc->font + c*VERSATILE_FONT_HEIGHT;
  873         addr = (uint8_t *)sc->fb_addr
  874             + (row + sc->ymargin)*(sc->stride)
  875             + (sc->depth/8) * (col + sc->xmargin);
  876 
  877         fg = a & 0xf ;
  878         bg = (a >> 4) & 0xf;
  879 
  880         for (i = 0; i < VERSATILE_FONT_HEIGHT; i++) {
  881                 for (j = 0, k = 7; j < 8; j++, k--) {
  882                         if ((p[i] & (1 << k)) == 0)
  883                                 color = bg;
  884                         else
  885                                 color = fg;
  886 
  887                         switch (sc->depth) {
  888                         case 16:
  889                                 rgb = (versatilefb_palette[color].r >> 3) << 11;
  890                                 rgb |= (versatilefb_palette[color].g >> 2) << 5;
  891                                 rgb |= (versatilefb_palette[color].b >> 3);
  892                                 addr[2*j] = rgb & 0xff;
  893                                 addr[2*j + 1] = (rgb >> 8) & 0xff;
  894                         default:
  895                                 /* Not supported yet */
  896                                 break;
  897                         }
  898                 }
  899 
  900                 addr += (sc->stride);
  901         }
  902 
  903         return (0);
  904 }
  905 
  906 static int
  907 versatilefb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
  908 {
  909         int i;
  910 
  911         for (i = 0; i < len; i++) 
  912                 versatilefb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
  913 
  914         return (0);
  915 }
  916 
  917 static int
  918 versatilefb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
  919     uint32_t pixel_mask, int size, int width)
  920 {
  921 
  922         return (0);
  923 }
  924 
  925 /*
  926  * Define a stub keyboard driver in case one hasn't been
  927  * compiled into the kernel
  928  */
  929 #include <sys/kbio.h>
  930 #include <dev/kbd/kbdreg.h>
  931 
  932 static int dummy_kbd_configure(int flags);
  933 
  934 keyboard_switch_t bcmdummysw;
  935 
  936 static int
  937 dummy_kbd_configure(int flags)
  938 {
  939 
  940         return (0);
  941 }
  942 KEYBOARD_DRIVER(bcmdummy, bcmdummysw, dummy_kbd_configure);

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