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: releng/12.0/sys/arm/versatile/versatile_clcd.c 326258 2017-11-27 15:04:10Z pfg $");
   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/ofw/openfirm.h>
   48 #include <dev/ofw/ofw_bus.h>
   49 #include <dev/ofw/ofw_bus_subr.h>
   50 
   51 #include <dev/fb/fbreg.h>
   52 #include <dev/syscons/syscons.h>
   53 
   54 #include <arm/versatile/versatile_scm.h>
   55 
   56 #include <machine/bus.h>
   57 
   58 #define PL110_VENDOR_ARM926PXP  1
   59 
   60 #define CLCD_MODE_RGB888        0x0
   61 #define CLCD_MODE_RGB555        0x01
   62 #define CLCD_MODE_RBG565        0x02
   63 #define CLCD_MODE_RGB565        0x03
   64 
   65 #define CLCDC_TIMING0           0x00
   66 #define CLCDC_TIMING1           0x04
   67 #define CLCDC_TIMING2           0x08
   68 #define CLCDC_TIMING3           0x0C
   69 #define CLCDC_TIMING3           0x0C
   70 #define CLCDC_UPBASE            0x10
   71 #define CLCDC_LPBASE            0x14
   72 #ifdef PL110_VENDOR_ARM926PXP
   73 #define CLCDC_CONTROL           0x18
   74 #define CLCDC_IMSC              0x1C
   75 #else
   76 #define CLCDC_IMSC              0x18
   77 #define CLCDC_CONTROL           0x1C
   78 #endif
   79 #define         CONTROL_WATERMARK       (1 << 16)
   80 #define         CONTROL_VCOMP_VS        (0 << 12)
   81 #define         CONTROL_VCOMP_BP        (1 << 12)
   82 #define         CONTROL_VCOMP_SAV       (2 << 12)
   83 #define         CONTROL_VCOMP_FP        (3 << 12)
   84 #define         CONTROL_PWR             (1 << 11)
   85 #define         CONTROL_BEPO            (1 << 10)
   86 #define         CONTROL_BEBO            (1 << 9)
   87 #define         CONTROL_BGR             (1 << 8)
   88 #define         CONTROL_DUAL            (1 << 7)
   89 #define         CONTROL_MONO8           (1 << 6)
   90 #define         CONTROL_TFT             (1 << 5)
   91 #define         CONTROL_BW              (1 << 4)
   92 #define         CONTROL_BPP1            (0x00 << 1)
   93 #define         CONTROL_BPP2            (0x01 << 1)
   94 #define         CONTROL_BPP4            (0x02 << 1)
   95 #define         CONTROL_BPP8            (0x03 << 1)
   96 #define         CONTROL_BPP16           (0x04 << 1)
   97 #define         CONTROL_BPP24           (0x05 << 1)
   98 #define         CONTROL_EN      (1 << 0)
   99 #define CLCDC_RIS               0x20
  100 #define CLCDC_MIS               0x24
  101 #define         INTR_MBERR              (1 << 4)
  102 #define         INTR_VCOMP              (1 << 3)
  103 #define         INTR_LNB                (1 << 2)
  104 #define         INTR_FUF                (1 << 1)
  105 #define CLCDC_ICR               0x28
  106 
  107 #ifdef DEBUG
  108 #define dprintf(fmt, args...) do { printf("%s(): ", __func__);   \
  109     printf(fmt,##args); } while (0)
  110 #else
  111 #define dprintf(fmt, args...)
  112 #endif
  113 
  114 #define versatile_clcdc_read_4(sc, reg) \
  115         bus_read_4((sc)->mem_res, (reg))
  116 #define versatile_clcdc_write_4(sc, reg, val)   \
  117         bus_write_4((sc)->mem_res, (reg), (val))
  118 
  119 struct versatile_clcdc_softc {
  120         struct resource*        mem_res;
  121 
  122         struct mtx              mtx;
  123 
  124         int                     width;
  125         int                     height;
  126         int                     mode;
  127 
  128         bus_dma_tag_t           dma_tag;
  129         bus_dmamap_t            dma_map;
  130         bus_addr_t              fb_phys;
  131         uint8_t                 *fb_base;
  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         unsigned int    fb_size;
  142 
  143         unsigned int    height;
  144         unsigned int    width;
  145         unsigned int    depth;
  146         unsigned int    stride;
  147 
  148         unsigned int    xmargin;
  149         unsigned int    ymargin;
  150 
  151         unsigned char   *font;
  152         int             initialized;
  153 };
  154 
  155 struct argb {
  156         uint8_t         a;
  157         uint8_t         r;
  158         uint8_t         g;
  159         uint8_t         b;
  160 };
  161 
  162 static struct argb versatilefb_palette[16] = {
  163         {0x00, 0x00, 0x00, 0x00},
  164         {0x00, 0x00, 0x00, 0xaa},
  165         {0x00, 0x00, 0xaa, 0x00},
  166         {0x00, 0x00, 0xaa, 0xaa},
  167         {0x00, 0xaa, 0x00, 0x00},
  168         {0x00, 0xaa, 0x00, 0xaa},
  169         {0x00, 0xaa, 0x55, 0x00},
  170         {0x00, 0xaa, 0xaa, 0xaa},
  171         {0x00, 0x55, 0x55, 0x55},
  172         {0x00, 0x55, 0x55, 0xff},
  173         {0x00, 0x55, 0xff, 0x55},
  174         {0x00, 0x55, 0xff, 0xff},
  175         {0x00, 0xff, 0x55, 0x55},
  176         {0x00, 0xff, 0x55, 0xff},
  177         {0x00, 0xff, 0xff, 0x55},
  178         {0x00, 0xff, 0xff, 0xff}
  179 };
  180 
  181 /* mouse pointer from dev/syscons/scgfbrndr.c */
  182 static u_char mouse_pointer[16] = {
  183         0x00, 0x40, 0x60, 0x70, 0x78, 0x7c, 0x7e, 0x68,
  184         0x0c, 0x0c, 0x06, 0x06, 0x00, 0x00, 0x00, 0x00
  185 };
  186 
  187 #define FB_WIDTH                640
  188 #define FB_HEIGHT               480
  189 #define FB_DEPTH                16
  190 
  191 #define VERSATILE_FONT_HEIGHT   16
  192 
  193 static struct video_adapter_softc va_softc;
  194 
  195 static int versatilefb_configure(int);
  196 static void versatilefb_update_margins(video_adapter_t *adp);
  197 
  198 static void
  199 versatile_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
  200 {
  201         bus_addr_t *addr;
  202 
  203         if (err)
  204                 return;
  205 
  206         addr = (bus_addr_t*)arg;
  207         *addr = segs[0].ds_addr;
  208 }
  209 
  210 static int
  211 versatile_clcdc_probe(device_t dev)
  212 {
  213 
  214         if (!ofw_bus_status_okay(dev))
  215                 return (ENXIO);
  216 
  217         if (ofw_bus_is_compatible(dev, "arm,pl110")) {
  218                 device_set_desc(dev, "PL110 CLCD controller");
  219                 return (BUS_PROBE_DEFAULT);
  220         }
  221 
  222         return (ENXIO);
  223 }
  224 
  225 static int
  226 versatile_clcdc_attach(device_t dev)
  227 {
  228         struct versatile_clcdc_softc *sc = device_get_softc(dev);
  229         struct video_adapter_softc *va_sc = &va_softc;
  230         int err, rid;
  231         uint32_t reg;
  232         int clcdid;
  233         int dma_size;
  234 
  235         /* Request memory resources */
  236         rid = 0;
  237         sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
  238         if (sc->mem_res == NULL) {
  239                 device_printf(dev, "could not allocate memory resources\n");
  240                 return (ENXIO);
  241         }
  242 
  243         err = versatile_scm_reg_read_4(SCM_CLCD, &reg);
  244         if (err) {
  245                 device_printf(dev, "failed to read SCM register\n");
  246                 goto fail;
  247         }
  248         clcdid = (reg >> SCM_CLCD_CLCDID_SHIFT) & SCM_CLCD_CLCDID_MASK;
  249         switch (clcdid) {
  250                 case 31:
  251                         device_printf(dev, "QEMU VGA 640x480\n");
  252                         sc->width = 640;
  253                         sc->height = 480;
  254                         break;
  255                 default:
  256                         device_printf(dev, "Unsupported: %d\n", clcdid);
  257                         goto fail;
  258         }
  259 
  260         reg &= ~SCM_CLCD_LCD_MODE_MASK;
  261         reg |= CLCD_MODE_RGB565;
  262         sc->mode = CLCD_MODE_RGB565;
  263         versatile_scm_reg_write_4(SCM_CLCD, reg);
  264         dma_size = sc->width*sc->height*2;
  265  
  266         /*
  267          * Power on LCD
  268          */
  269         reg |= SCM_CLCD_PWR3V5VSWITCH | SCM_CLCD_NLCDIOON;
  270         versatile_scm_reg_write_4(SCM_CLCD, reg);
  271 
  272         /*
  273          * XXX: hardcoded timing for VGA. For other modes/panels
  274          * we need to keep table of timing register values
  275          */
  276         /*
  277          * XXX: set SYS_OSC1 
  278          */
  279         versatile_clcdc_write_4(sc, CLCDC_TIMING0, 0x3F1F3F9C);
  280         versatile_clcdc_write_4(sc, CLCDC_TIMING1, 0x090B61DF);
  281         versatile_clcdc_write_4(sc, CLCDC_TIMING2, 0x067F1800);
  282         /* XXX: timing 3? */
  283 
  284         /*
  285          * Now allocate framebuffer memory
  286          */
  287         err = bus_dma_tag_create(
  288             bus_get_dma_tag(dev),
  289             4, 0,               /* alignment, boundary */
  290             BUS_SPACE_MAXADDR_32BIT,    /* lowaddr */
  291             BUS_SPACE_MAXADDR,          /* highaddr */
  292             NULL, NULL,                 /* filter, filterarg */
  293             dma_size, 1,                /* maxsize, nsegments */
  294             dma_size, 0,                /* maxsegsize, flags */
  295             NULL, NULL,                 /* lockfunc, lockarg */
  296             &sc->dma_tag);
  297 
  298         err = bus_dmamem_alloc(sc->dma_tag, (void **)&sc->fb_base,
  299             0, &sc->dma_map);
  300         if (err) {
  301                 device_printf(dev, "cannot allocate framebuffer\n");
  302                 goto fail;
  303         }
  304 
  305         err = bus_dmamap_load(sc->dma_tag, sc->dma_map, sc->fb_base,
  306             dma_size, versatile_fb_dmamap_cb, &sc->fb_phys, BUS_DMA_NOWAIT);
  307 
  308         if (err) {
  309                 device_printf(dev, "cannot load DMA map\n");
  310                 goto fail;
  311         }
  312 
  313         /* Make sure it's blank */
  314         memset(sc->fb_base, 0x00, dma_size);
  315 
  316         versatile_clcdc_write_4(sc, CLCDC_UPBASE, sc->fb_phys);
  317 
  318         err = (sc_attach_unit(device_get_unit(dev),
  319             device_get_flags(dev) | SC_AUTODETECT_KBD));
  320 
  321         if (err) {
  322                 device_printf(dev, "failed to attach syscons\n");
  323                 goto fail;
  324         }
  325 
  326         /*
  327          * XXX: hardcoded for VGA
  328          */
  329         reg = CONTROL_VCOMP_BP | CONTROL_TFT | CONTROL_BGR | CONTROL_EN;
  330         reg |= CONTROL_BPP16;
  331         versatile_clcdc_write_4(sc, CLCDC_CONTROL, reg);
  332         DELAY(20);
  333         reg |= CONTROL_PWR;
  334         versatile_clcdc_write_4(sc, CLCDC_CONTROL, reg);
  335 
  336         va_sc->fb_addr = (vm_offset_t)sc->fb_base;
  337         va_sc->fb_size = dma_size;
  338         va_sc->width = sc->width;
  339         va_sc->height = sc->height;
  340         va_sc->depth = 16;
  341         va_sc->stride = sc->width * 2;
  342         versatilefb_update_margins(&va_sc->va);
  343 
  344         return (0);
  345 
  346 fail:
  347         if (sc->fb_base)
  348                 bus_dmamem_free(sc->dma_tag, sc->fb_base, sc->dma_map);
  349         if (sc->dma_tag)
  350                 bus_dma_tag_destroy(sc->dma_tag);
  351         return (err);
  352 }
  353 
  354 static device_method_t versatile_clcdc_methods[] = {
  355         DEVMETHOD(device_probe,         versatile_clcdc_probe),
  356         DEVMETHOD(device_attach,        versatile_clcdc_attach),
  357 
  358         DEVMETHOD_END
  359 };
  360 
  361 static driver_t versatile_clcdc_driver = {
  362         "clcdc",
  363         versatile_clcdc_methods,
  364         sizeof(struct versatile_clcdc_softc),
  365 };
  366 
  367 static devclass_t versatile_clcdc_devclass;
  368 
  369 DRIVER_MODULE(versatile_clcdc, simplebus, versatile_clcdc_driver, versatile_clcdc_devclass, 0, 0);
  370 
  371 /*
  372  * Video driver routines and glue.
  373  */
  374 static vi_probe_t               versatilefb_probe;
  375 static vi_init_t                versatilefb_init;
  376 static vi_get_info_t            versatilefb_get_info;
  377 static vi_query_mode_t          versatilefb_query_mode;
  378 static vi_set_mode_t            versatilefb_set_mode;
  379 static vi_save_font_t           versatilefb_save_font;
  380 static vi_load_font_t           versatilefb_load_font;
  381 static vi_show_font_t           versatilefb_show_font;
  382 static vi_save_palette_t        versatilefb_save_palette;
  383 static vi_load_palette_t        versatilefb_load_palette;
  384 static vi_set_border_t          versatilefb_set_border;
  385 static vi_save_state_t          versatilefb_save_state;
  386 static vi_load_state_t          versatilefb_load_state;
  387 static vi_set_win_org_t         versatilefb_set_win_org;
  388 static vi_read_hw_cursor_t      versatilefb_read_hw_cursor;
  389 static vi_set_hw_cursor_t       versatilefb_set_hw_cursor;
  390 static vi_set_hw_cursor_shape_t versatilefb_set_hw_cursor_shape;
  391 static vi_blank_display_t       versatilefb_blank_display;
  392 static vi_mmap_t                versatilefb_mmap;
  393 static vi_ioctl_t               versatilefb_ioctl;
  394 static vi_clear_t               versatilefb_clear;
  395 static vi_fill_rect_t           versatilefb_fill_rect;
  396 static vi_bitblt_t              versatilefb_bitblt;
  397 static vi_diag_t                versatilefb_diag;
  398 static vi_save_cursor_palette_t versatilefb_save_cursor_palette;
  399 static vi_load_cursor_palette_t versatilefb_load_cursor_palette;
  400 static vi_copy_t                versatilefb_copy;
  401 static vi_putp_t                versatilefb_putp;
  402 static vi_putc_t                versatilefb_putc;
  403 static vi_puts_t                versatilefb_puts;
  404 static vi_putm_t                versatilefb_putm;
  405 
  406 static video_switch_t versatilefbvidsw = {
  407         .probe                  = versatilefb_probe,
  408         .init                   = versatilefb_init,
  409         .get_info               = versatilefb_get_info,
  410         .query_mode             = versatilefb_query_mode,
  411         .set_mode               = versatilefb_set_mode,
  412         .save_font              = versatilefb_save_font,
  413         .load_font              = versatilefb_load_font,
  414         .show_font              = versatilefb_show_font,
  415         .save_palette           = versatilefb_save_palette,
  416         .load_palette           = versatilefb_load_palette,
  417         .set_border             = versatilefb_set_border,
  418         .save_state             = versatilefb_save_state,
  419         .load_state             = versatilefb_load_state,
  420         .set_win_org            = versatilefb_set_win_org,
  421         .read_hw_cursor         = versatilefb_read_hw_cursor,
  422         .set_hw_cursor          = versatilefb_set_hw_cursor,
  423         .set_hw_cursor_shape    = versatilefb_set_hw_cursor_shape,
  424         .blank_display          = versatilefb_blank_display,
  425         .mmap                   = versatilefb_mmap,
  426         .ioctl                  = versatilefb_ioctl,
  427         .clear                  = versatilefb_clear,
  428         .fill_rect              = versatilefb_fill_rect,
  429         .bitblt                 = versatilefb_bitblt,
  430         .diag                   = versatilefb_diag,
  431         .save_cursor_palette    = versatilefb_save_cursor_palette,
  432         .load_cursor_palette    = versatilefb_load_cursor_palette,
  433         .copy                   = versatilefb_copy,
  434         .putp                   = versatilefb_putp,
  435         .putc                   = versatilefb_putc,
  436         .puts                   = versatilefb_puts,
  437         .putm                   = versatilefb_putm,
  438 };
  439 
  440 VIDEO_DRIVER(versatilefb, versatilefbvidsw, versatilefb_configure);
  441 
  442 static vr_init_t clcdr_init;
  443 static vr_clear_t clcdr_clear;
  444 static vr_draw_border_t clcdr_draw_border;
  445 static vr_draw_t clcdr_draw;
  446 static vr_set_cursor_t clcdr_set_cursor;
  447 static vr_draw_cursor_t clcdr_draw_cursor;
  448 static vr_blink_cursor_t clcdr_blink_cursor;
  449 static vr_set_mouse_t clcdr_set_mouse;
  450 static vr_draw_mouse_t clcdr_draw_mouse;
  451 
  452 /*
  453  * We use our own renderer; this is because we must emulate a hardware
  454  * cursor.
  455  */
  456 static sc_rndr_sw_t clcdrend = {
  457         clcdr_init,
  458         clcdr_clear,
  459         clcdr_draw_border,
  460         clcdr_draw,
  461         clcdr_set_cursor,
  462         clcdr_draw_cursor,
  463         clcdr_blink_cursor,
  464         clcdr_set_mouse,
  465         clcdr_draw_mouse
  466 };
  467 
  468 RENDERER(versatilefb, 0, clcdrend, gfb_set);
  469 RENDERER_MODULE(versatilefb, gfb_set);
  470 
  471 static void
  472 clcdr_init(scr_stat* scp)
  473 {
  474 }
  475 
  476 static void
  477 clcdr_clear(scr_stat* scp, int c, int attr)
  478 {
  479 }
  480 
  481 static void
  482 clcdr_draw_border(scr_stat* scp, int color)
  483 {
  484 }
  485 
  486 static void
  487 clcdr_draw(scr_stat* scp, int from, int count, int flip)
  488 {
  489         video_adapter_t* adp = scp->sc->adp;
  490         int i, c, a;
  491 
  492         if (!flip) {
  493                 /* Normal printing */
  494                 vidd_puts(adp, from, (uint16_t*)sc_vtb_pointer(&scp->vtb, from), count);
  495         } else {        
  496                 /* This is for selections and such: invert the color attribute */
  497                 for (i = count; i-- > 0; ++from) {
  498                         c = sc_vtb_getc(&scp->vtb, from);
  499                         a = sc_vtb_geta(&scp->vtb, from) >> 8;
  500                         vidd_putc(adp, from, c, (a >> 4) | ((a & 0xf) << 4));
  501                 }
  502         }
  503 }
  504 
  505 static void
  506 clcdr_set_cursor(scr_stat* scp, int base, int height, int blink)
  507 {
  508 }
  509 
  510 static void
  511 clcdr_draw_cursor(scr_stat* scp, int off, int blink, int on, int flip)
  512 {
  513         video_adapter_t* adp = scp->sc->adp;
  514         struct video_adapter_softc *sc;
  515         int row, col;
  516         uint8_t *addr;
  517         int i,j;
  518 
  519         sc = (struct video_adapter_softc *)adp;
  520 
  521         if (scp->curs_attr.height <= 0)
  522                 return;
  523 
  524         if (sc->fb_addr == 0)
  525                 return;
  526 
  527         if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
  528                 return;
  529 
  530         /* calculate the coordinates in the video buffer */
  531         row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
  532         col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
  533 
  534         addr = (uint8_t *)sc->fb_addr
  535             + (row + sc->ymargin)*(sc->stride)
  536             + (sc->depth/8) * (col + sc->xmargin);
  537 
  538         /* our cursor consists of simply inverting the char under it */
  539         for (i = 0; i < adp->va_info.vi_cheight; i++) {
  540                 for (j = 0; j < adp->va_info.vi_cwidth; j++) {
  541 
  542                         addr[2*j] ^= 0xff;
  543                         addr[2*j + 1] ^= 0xff;
  544                 }
  545 
  546                 addr += sc->stride;
  547         }
  548 }
  549 
  550 static void
  551 clcdr_blink_cursor(scr_stat* scp, int at, int flip)
  552 {
  553 }
  554 
  555 static void
  556 clcdr_set_mouse(scr_stat* scp)
  557 {
  558 }
  559 
  560 static void
  561 clcdr_draw_mouse(scr_stat* scp, int x, int y, int on)
  562 {
  563         vidd_putm(scp->sc->adp, x, y, mouse_pointer, 0xffffffff, 16, 8);
  564 
  565 }
  566 
  567 static uint16_t versatilefb_static_window[ROW*COL];
  568 extern u_char dflt_font_16[];
  569 
  570 /*
  571  * Update videoadapter settings after changing resolution
  572  */
  573 static void
  574 versatilefb_update_margins(video_adapter_t *adp)
  575 {
  576         struct video_adapter_softc *sc;
  577         video_info_t *vi;
  578 
  579         sc = (struct video_adapter_softc *)adp;
  580         vi = &adp->va_info;
  581 
  582         sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
  583         sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
  584 }
  585 
  586 static int
  587 versatilefb_configure(int flags)
  588 {
  589         struct video_adapter_softc *va_sc;
  590 
  591         va_sc = &va_softc;
  592 
  593         if (va_sc->initialized)
  594                 return (0);
  595 
  596         va_sc->width = FB_WIDTH;
  597         va_sc->height = FB_HEIGHT;
  598         va_sc->depth = FB_DEPTH;
  599 
  600         versatilefb_init(0, &va_sc->va, 0);
  601 
  602         va_sc->initialized = 1;
  603 
  604         return (0);
  605 }
  606 
  607 static int
  608 versatilefb_probe(int unit, video_adapter_t **adp, void *arg, int flags)
  609 {
  610 
  611         return (0);
  612 }
  613 
  614 static int
  615 versatilefb_init(int unit, video_adapter_t *adp, int flags)
  616 {
  617         struct video_adapter_softc *sc;
  618         video_info_t *vi;
  619 
  620         sc = (struct video_adapter_softc *)adp;
  621         vi = &adp->va_info;
  622 
  623         vid_init_struct(adp, "versatilefb", -1, unit);
  624 
  625         sc->font = dflt_font_16;
  626         vi->vi_cheight = VERSATILE_FONT_HEIGHT;
  627         vi->vi_cwidth = 8;
  628 
  629         vi->vi_width = sc->width/8;
  630         vi->vi_height = sc->height/vi->vi_cheight;
  631 
  632         /*
  633          * Clamp width/height to syscons maximums
  634          */
  635         if (vi->vi_width > COL)
  636                 vi->vi_width = COL;
  637         if (vi->vi_height > ROW)
  638                 vi->vi_height = ROW;
  639 
  640         sc->xmargin = (sc->width - (vi->vi_width * vi->vi_cwidth)) / 2;
  641         sc->ymargin = (sc->height - (vi->vi_height * vi->vi_cheight))/2;
  642 
  643         adp->va_window = (vm_offset_t) versatilefb_static_window;
  644         adp->va_flags |= V_ADP_FONT /* | V_ADP_COLOR | V_ADP_MODECHANGE */;
  645 
  646         vid_register(&sc->va);
  647 
  648         return (0);
  649 }
  650 
  651 static int
  652 versatilefb_get_info(video_adapter_t *adp, int mode, video_info_t *info)
  653 {
  654         bcopy(&adp->va_info, info, sizeof(*info));
  655         return (0);
  656 }
  657 
  658 static int
  659 versatilefb_query_mode(video_adapter_t *adp, video_info_t *info)
  660 {
  661         return (0);
  662 }
  663 
  664 static int
  665 versatilefb_set_mode(video_adapter_t *adp, int mode)
  666 {
  667         return (0);
  668 }
  669 
  670 static int
  671 versatilefb_save_font(video_adapter_t *adp, int page, int size, int width,
  672     u_char *data, int c, int count)
  673 {
  674         return (0);
  675 }
  676 
  677 static int
  678 versatilefb_load_font(video_adapter_t *adp, int page, int size, int width,
  679     u_char *data, int c, int count)
  680 {
  681         struct video_adapter_softc *sc = (struct video_adapter_softc *)adp;
  682 
  683         sc->font = data;
  684 
  685         return (0);
  686 }
  687 
  688 static int
  689 versatilefb_show_font(video_adapter_t *adp, int page)
  690 {
  691         return (0);
  692 }
  693 
  694 static int
  695 versatilefb_save_palette(video_adapter_t *adp, u_char *palette)
  696 {
  697         return (0);
  698 }
  699 
  700 static int
  701 versatilefb_load_palette(video_adapter_t *adp, u_char *palette)
  702 {
  703         return (0);
  704 }
  705 
  706 static int
  707 versatilefb_set_border(video_adapter_t *adp, int border)
  708 {
  709         return (versatilefb_blank_display(adp, border));
  710 }
  711 
  712 static int
  713 versatilefb_save_state(video_adapter_t *adp, void *p, size_t size)
  714 {
  715         return (0);
  716 }
  717 
  718 static int
  719 versatilefb_load_state(video_adapter_t *adp, void *p)
  720 {
  721         return (0);
  722 }
  723 
  724 static int
  725 versatilefb_set_win_org(video_adapter_t *adp, off_t offset)
  726 {
  727         return (0);
  728 }
  729 
  730 static int
  731 versatilefb_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
  732 {
  733         *col = *row = 0;
  734 
  735         return (0);
  736 }
  737 
  738 static int
  739 versatilefb_set_hw_cursor(video_adapter_t *adp, int col, int row)
  740 {
  741 
  742         return (0);
  743 }
  744 
  745 static int
  746 versatilefb_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
  747     int celsize, int blink)
  748 {
  749         return (0);
  750 }
  751 
  752 static int
  753 versatilefb_blank_display(video_adapter_t *adp, int mode)
  754 {
  755 
  756         struct video_adapter_softc *sc;
  757 
  758         sc = (struct video_adapter_softc *)adp;
  759         if (sc && sc->fb_addr)
  760                 memset((void*)sc->fb_addr, 0, sc->fb_size);
  761 
  762         return (0);
  763 }
  764 
  765 static int
  766 versatilefb_mmap(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
  767     int prot, vm_memattr_t *memattr)
  768 {
  769         struct video_adapter_softc *sc;
  770 
  771         sc = (struct video_adapter_softc *)adp;
  772 
  773         /*
  774          * This might be a legacy VGA mem request: if so, just point it at the
  775          * framebuffer, since it shouldn't be touched
  776          */
  777         if (offset < sc->stride*sc->height) {
  778                 *paddr = sc->fb_addr + offset;
  779                 return (0);
  780         }
  781 
  782         return (EINVAL);
  783 }
  784 
  785 static int
  786 versatilefb_ioctl(video_adapter_t *adp, u_long cmd, caddr_t data)
  787 {
  788 
  789         return (0);
  790 }
  791 
  792 static int
  793 versatilefb_clear(video_adapter_t *adp)
  794 {
  795 
  796         return (versatilefb_blank_display(adp, 0));
  797 }
  798 
  799 static int
  800 versatilefb_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
  801 {
  802 
  803         return (0);
  804 }
  805 
  806 static int
  807 versatilefb_bitblt(video_adapter_t *adp, ...)
  808 {
  809 
  810         return (0);
  811 }
  812 
  813 static int
  814 versatilefb_diag(video_adapter_t *adp, int level)
  815 {
  816 
  817         return (0);
  818 }
  819 
  820 static int
  821 versatilefb_save_cursor_palette(video_adapter_t *adp, u_char *palette)
  822 {
  823 
  824         return (0);
  825 }
  826 
  827 static int
  828 versatilefb_load_cursor_palette(video_adapter_t *adp, u_char *palette)
  829 {
  830 
  831         return (0);
  832 }
  833 
  834 static int
  835 versatilefb_copy(video_adapter_t *adp, vm_offset_t src, vm_offset_t dst, int n)
  836 {
  837 
  838         return (0);
  839 }
  840 
  841 static int
  842 versatilefb_putp(video_adapter_t *adp, vm_offset_t off, uint32_t p, uint32_t a,
  843     int size, int bpp, int bit_ltor, int byte_ltor)
  844 {
  845 
  846         return (0);
  847 }
  848 
  849 static int
  850 versatilefb_putc(video_adapter_t *adp, vm_offset_t off, uint8_t c, uint8_t a)
  851 {
  852         struct video_adapter_softc *sc;
  853         int row;
  854         int col;
  855         int i, j, k;
  856         uint8_t *addr;
  857         u_char *p;
  858         uint8_t fg, bg, color;
  859         uint16_t rgb;
  860 
  861         sc = (struct video_adapter_softc *)adp;
  862 
  863         if (sc->fb_addr == 0)
  864                 return (0);
  865 
  866         if (off >= adp->va_info.vi_width * adp->va_info.vi_height)
  867                 return (0);
  868 
  869         row = (off / adp->va_info.vi_width) * adp->va_info.vi_cheight;
  870         col = (off % adp->va_info.vi_width) * adp->va_info.vi_cwidth;
  871         p = sc->font + c*VERSATILE_FONT_HEIGHT;
  872         addr = (uint8_t *)sc->fb_addr
  873             + (row + sc->ymargin)*(sc->stride)
  874             + (sc->depth/8) * (col + sc->xmargin);
  875 
  876         fg = a & 0xf ;
  877         bg = (a >> 4) & 0xf;
  878 
  879         for (i = 0; i < VERSATILE_FONT_HEIGHT; i++) {
  880                 for (j = 0, k = 7; j < 8; j++, k--) {
  881                         if ((p[i] & (1 << k)) == 0)
  882                                 color = bg;
  883                         else
  884                                 color = fg;
  885 
  886                         switch (sc->depth) {
  887                         case 16:
  888                                 rgb = (versatilefb_palette[color].r >> 3) << 11;
  889                                 rgb |= (versatilefb_palette[color].g >> 2) << 5;
  890                                 rgb |= (versatilefb_palette[color].b >> 3);
  891                                 addr[2*j] = rgb & 0xff;
  892                                 addr[2*j + 1] = (rgb >> 8) & 0xff;
  893                         default:
  894                                 /* Not supported yet */
  895                                 break;
  896                         }
  897                 }
  898 
  899                 addr += (sc->stride);
  900         }
  901 
  902         return (0);
  903 }
  904 
  905 static int
  906 versatilefb_puts(video_adapter_t *adp, vm_offset_t off, u_int16_t *s, int len)
  907 {
  908         int i;
  909 
  910         for (i = 0; i < len; i++) 
  911                 versatilefb_putc(adp, off + i, s[i] & 0xff, (s[i] & 0xff00) >> 8);
  912 
  913         return (0);
  914 }
  915 
  916 static int
  917 versatilefb_putm(video_adapter_t *adp, int x, int y, uint8_t *pixel_image,
  918     uint32_t pixel_mask, int size, int width)
  919 {
  920 
  921         return (0);
  922 }
  923 
  924 /*
  925  * Define a stub keyboard driver in case one hasn't been
  926  * compiled into the kernel
  927  */
  928 #include <sys/kbio.h>
  929 #include <dev/kbd/kbdreg.h>
  930 
  931 static int dummy_kbd_configure(int flags);
  932 
  933 keyboard_switch_t bcmdummysw;
  934 
  935 static int
  936 dummy_kbd_configure(int flags)
  937 {
  938 
  939         return (0);
  940 }
  941 KEYBOARD_DRIVER(bcmdummy, bcmdummysw, dummy_kbd_configure);

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