LXR qemu/hw/display/next-fb.c

   1/*
   2 * NeXT Cube/Station Framebuffer Emulation
   3 *
   4 * Copyright (c) 2011 Bryce Lanham
   5 *
   6 * Permission is hereby granted, free of charge, to any person obtaining a copy
   7 * of this software and associated documentation files (the "Software"), to deal
   8 * in the Software without restriction, including without limitation the rights
   9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10 * copies of the Software, and to permit persons to whom the Software is
  11 * furnished to do so, subject to the following conditions:
  12 *
  13 * The above copyright notice and this permission notice shall be included in
  14 * all copies or substantial portions of the Software.
  15 *
  16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22 * THE SOFTWARE.
  23 */
  24#include "qemu/osdep.h"
  25#include "qapi/error.h"
  26#include "ui/console.h"
  27#include "hw/hw.h"
  28#include "hw/boards.h"
  29#include "hw/loader.h"
  30#include "framebuffer.h"
  31#include "ui/pixel_ops.h"
  32#include "hw/m68k/next-cube.h"
  33#include "qom/object.h"
  34
  35OBJECT_DECLARE_SIMPLE_TYPE(NeXTFbState, NEXTFB)
  36
  37struct NeXTFbState {
  38    SysBusDevice parent_obj;
  39
  40    MemoryRegion fb_mr;
  41    MemoryRegionSection fbsection;
  42    QemuConsole *con;
  43
  44    uint32_t cols;
  45    uint32_t rows;
  46    int invalidate;
  47};
  48
  49static void nextfb_draw_line(void *opaque, uint8_t *d, const uint8_t *s,
  50                             int width, int pitch)
  51{
  52    NeXTFbState *nfbstate = NEXTFB(opaque);
  53    static const uint32_t pal[4] = {
  54        0xFFFFFFFF, 0xFFAAAAAA, 0xFF555555, 0xFF000000
  55    };
  56    uint32_t *buf = (uint32_t *)d;
  57    int i = 0;
  58
  59    for (i = 0; i < nfbstate->cols / 4; i++) {
  60        int j = i * 4;
  61        uint8_t src = s[i];
  62        buf[j + 3] = pal[src & 0x3];
  63        src >>= 2;
  64        buf[j + 2] = pal[src & 0x3];
  65        src >>= 2;
  66        buf[j + 1] = pal[src & 0x3];
  67        src >>= 2;
  68        buf[j + 0] = pal[src & 0x3];
  69    }
  70}
  71
  72static void nextfb_update(void *opaque)
  73{
  74    NeXTFbState *s = NEXTFB(opaque);
  75    int dest_width = 4;
  76    int src_width;
  77    int first = 0;
  78    int last  = 0;
  79    DisplaySurface *surface = qemu_console_surface(s->con);
  80
  81    src_width = s->cols / 4 + 8;
  82    dest_width = s->cols * 4;
  83
  84    if (s->invalidate) {
  85        framebuffer_update_memory_section(&s->fbsection, &s->fb_mr, 0,
  86                                          s->cols, src_width);
  87        s->invalidate = 0;
  88    }
  89
  90    framebuffer_update_display(surface, &s->fbsection, s->cols, s->rows,
  91                               src_width, dest_width, 0, 1, nextfb_draw_line,
  92                               s, &first, &last);
  93
  94    dpy_gfx_update(s->con, 0, 0, s->cols, s->rows);
  95}
  96
  97static void nextfb_invalidate(void *opaque)
  98{
  99    NeXTFbState *s = NEXTFB(opaque);
 100    s->invalidate = 1;
 101}
 102
 103static const GraphicHwOps nextfb_ops = {
 104    .invalidate  = nextfb_invalidate,
 105    .gfx_update  = nextfb_update,
 106};
 107
 108static void nextfb_realize(DeviceState *dev, Error **errp)
 109{
 110    NeXTFbState *s = NEXTFB(dev);
 111
 112    memory_region_init_ram(&s->fb_mr, OBJECT(dev), "next-video", 0x1CB100,
 113                           &error_fatal);
 114    sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->fb_mr);
 115
 116    s->invalidate = 1;
 117    s->cols = 1120;
 118    s->rows = 832;
 119
 120    s->con = graphic_console_init(dev, 0, &nextfb_ops, s);
 121    qemu_console_resize(s->con, s->cols, s->rows);
 122}
 123
 124static void nextfb_class_init(ObjectClass *oc, void *data)
 125{
 126    DeviceClass *dc = DEVICE_CLASS(oc);
 127
 128    set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
 129    dc->realize = nextfb_realize;
 130
 131    /* Note: This device does not any state that we have to reset or migrate */
 132}
 133
 134static const TypeInfo nextfb_info = {
 135    .name          = TYPE_NEXTFB,
 136    .parent        = TYPE_SYS_BUS_DEVICE,
 137    .instance_size = sizeof(NeXTFbState),
 138    .class_init    = nextfb_class_init,
 139};
 140
 141static void nextfb_register_types(void)
 142{
 143    type_register_static(&nextfb_info);
 144}
 145
 146type_init(nextfb_register_types)
 147