Merge remote-tracking branch 'remotes/dgilbert-gitlab/tags/pull-virtiofs-20220126...
[qemu.git] / 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/loader.h"
28 #include "framebuffer.h"
29 #include "ui/pixel_ops.h"
30 #include "hw/m68k/next-cube.h"
31 #include "qom/object.h"
32
33 OBJECT_DECLARE_SIMPLE_TYPE(NeXTFbState, NEXTFB)
34
35 struct NeXTFbState {
36 SysBusDevice parent_obj;
37
38 MemoryRegion fb_mr;
39 MemoryRegionSection fbsection;
40 QemuConsole *con;
41
42 uint32_t cols;
43 uint32_t rows;
44 int invalidate;
45 };
46
47 static void nextfb_draw_line(void *opaque, uint8_t *d, const uint8_t *s,
48 int width, int pitch)
49 {
50 NeXTFbState *nfbstate = NEXTFB(opaque);
51 static const uint32_t pal[4] = {
52 0xFFFFFFFF, 0xFFAAAAAA, 0xFF555555, 0xFF000000
53 };
54 uint32_t *buf = (uint32_t *)d;
55 int i = 0;
56
57 for (i = 0; i < nfbstate->cols / 4; i++) {
58 int j = i * 4;
59 uint8_t src = s[i];
60 buf[j + 3] = pal[src & 0x3];
61 src >>= 2;
62 buf[j + 2] = pal[src & 0x3];
63 src >>= 2;
64 buf[j + 1] = pal[src & 0x3];
65 src >>= 2;
66 buf[j + 0] = pal[src & 0x3];
67 }
68 }
69
70 static void nextfb_update(void *opaque)
71 {
72 NeXTFbState *s = NEXTFB(opaque);
73 int dest_width = 4;
74 int src_width;
75 int first = 0;
76 int last = 0;
77 DisplaySurface *surface = qemu_console_surface(s->con);
78
79 src_width = s->cols / 4 + 8;
80 dest_width = s->cols * 4;
81
82 if (s->invalidate) {
83 framebuffer_update_memory_section(&s->fbsection, &s->fb_mr, 0,
84 s->cols, src_width);
85 s->invalidate = 0;
86 }
87
88 framebuffer_update_display(surface, &s->fbsection, s->cols, s->rows,
89 src_width, dest_width, 0, 1, nextfb_draw_line,
90 s, &first, &last);
91
92 dpy_gfx_update(s->con, 0, 0, s->cols, s->rows);
93 }
94
95 static void nextfb_invalidate(void *opaque)
96 {
97 NeXTFbState *s = NEXTFB(opaque);
98 s->invalidate = 1;
99 }
100
101 static const GraphicHwOps nextfb_ops = {
102 .invalidate = nextfb_invalidate,
103 .gfx_update = nextfb_update,
104 };
105
106 static void nextfb_realize(DeviceState *dev, Error **errp)
107 {
108 NeXTFbState *s = NEXTFB(dev);
109
110 memory_region_init_ram(&s->fb_mr, OBJECT(dev), "next-video", 0x1CB100,
111 &error_fatal);
112 sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->fb_mr);
113
114 s->invalidate = 1;
115 s->cols = 1120;
116 s->rows = 832;
117
118 s->con = graphic_console_init(dev, 0, &nextfb_ops, s);
119 qemu_console_resize(s->con, s->cols, s->rows);
120 }
121
122 static void nextfb_class_init(ObjectClass *oc, void *data)
123 {
124 DeviceClass *dc = DEVICE_CLASS(oc);
125
126 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
127 dc->realize = nextfb_realize;
128
129 /* Note: This device does not any state that we have to reset or migrate */
130 }
131
132 static const TypeInfo nextfb_info = {
133 .name = TYPE_NEXTFB,
134 .parent = TYPE_SYS_BUS_DEVICE,
135 .instance_size = sizeof(NeXTFbState),
136 .class_init = nextfb_class_init,
137 };
138
139 static void nextfb_register_types(void)
140 {
141 type_register_static(&nextfb_info);
142 }
143
144 type_init(nextfb_register_types)