summaryrefslogtreecommitdiffstats
path: root/hw/display/next-fb.c
blob: dd6a1aa8aeeb5be4f163fb16b1850451f3111935 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
/*
 * NeXT Cube/Station Framebuffer Emulation
 *
 * Copyright (c) 2011 Bryce Lanham
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "ui/console.h"
#include "hw/loader.h"
#include "framebuffer.h"
#include "ui/pixel_ops.h"
#include "hw/m68k/next-cube.h"
#include "qom/object.h"

OBJECT_DECLARE_SIMPLE_TYPE(NeXTFbState, NEXTFB)

struct NeXTFbState {
    SysBusDevice parent_obj;

    MemoryRegion fb_mr;
    MemoryRegionSection fbsection;
    QemuConsole *con;

    uint32_t cols;
    uint32_t rows;
    int invalidate;
};

static void nextfb_draw_line(void *opaque, uint8_t *d, const uint8_t *s,
                             int width, int pitch)
{
    NeXTFbState *nfbstate = NEXTFB(opaque);
    static const uint32_t pal[4] = {
        0xFFFFFFFF, 0xFFAAAAAA, 0xFF555555, 0xFF000000
    };
    uint32_t *buf = (uint32_t *)d;
    int i = 0;

    for (i = 0; i < nfbstate->cols / 4; i++) {
        int j = i * 4;
        uint8_t src = s[i];
        buf[j + 3] = pal[src & 0x3];
        src >>= 2;
        buf[j + 2] = pal[src & 0x3];
        src >>= 2;
        buf[j + 1] = pal[src & 0x3];
        src >>= 2;
        buf[j + 0] = pal[src & 0x3];
    }
}

static void nextfb_update(void *opaque)
{
    NeXTFbState *s = NEXTFB(opaque);
    int dest_width = 4;
    int src_width;
    int first = 0;
    int last  = 0;
    DisplaySurface *surface = qemu_console_surface(s->con);

    src_width = s->cols / 4 + 8;
    dest_width = s->cols * 4;

    if (s->invalidate) {
        framebuffer_update_memory_section(&s->fbsection, &s->fb_mr, 0,
                                          s->cols, src_width);
        s->invalidate = 0;
    }

    framebuffer_update_display(surface, &s->fbsection, s->cols, s->rows,
                               src_width, dest_width, 0, 1, nextfb_draw_line,
                               s, &first, &last);

    dpy_gfx_update(s->con, 0, 0, s->cols, s->rows);
}

static void nextfb_invalidate(void *opaque)
{
    NeXTFbState *s = NEXTFB(opaque);
    s->invalidate = 1;
}

static const GraphicHwOps nextfb_ops = {
    .invalidate  = nextfb_invalidate,
    .gfx_update  = nextfb_update,
};

static void nextfb_realize(DeviceState *dev, Error **errp)
{
    NeXTFbState *s = NEXTFB(dev);

    memory_region_init_ram(&s->fb_mr, OBJECT(dev), "next-video", 0x1CB100,
                           &error_fatal);
    sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->fb_mr);

    s->invalidate = 1;
    s->cols = 1120;
    s->rows = 832;

    s->con = graphic_console_init(dev, 0, &nextfb_ops, s);
    qemu_console_resize(s->con, s->cols, s->rows);
}

static void nextfb_class_init(ObjectClass *oc, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(oc);

    set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
    dc->realize = nextfb_realize;

    /* Note: This device does not any state that we have to reset or migrate */
}

static const TypeInfo nextfb_info = {
    .name          = TYPE_NEXTFB,
    .parent        = TYPE_SYS_BUS_DEVICE,
    .instance_size = sizeof(NeXTFbState),
    .class_init    = nextfb_class_init,
};

static void nextfb_register_types(void)
{
    type_register_static(&nextfb_info);
}

type_init(nextfb_register_types)