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e3355a0c TH |
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 "hw/display/framebuffer.h" | |
31 | #include "ui/pixel_ops.h" | |
32 | #include "hw/m68k/next-cube.h" | |
33 | ||
34 | #define NEXTFB(obj) OBJECT_CHECK(NeXTFbState, (obj), TYPE_NEXTFB) | |
35 | ||
36 | struct NeXTFbState { | |
37 | SysBusDevice parent_obj; | |
38 | ||
39 | MemoryRegion fb_mr; | |
40 | MemoryRegionSection fbsection; | |
41 | QemuConsole *con; | |
42 | ||
43 | uint32_t cols; | |
44 | uint32_t rows; | |
45 | int invalidate; | |
46 | }; | |
47 | typedef struct NeXTFbState NeXTFbState; | |
48 | ||
49 | static 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 | ||
72 | static 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 | ||
97 | static void nextfb_invalidate(void *opaque) | |
98 | { | |
99 | NeXTFbState *s = NEXTFB(opaque); | |
100 | s->invalidate = 1; | |
101 | } | |
102 | ||
103 | static const GraphicHwOps nextfb_ops = { | |
104 | .invalidate = nextfb_invalidate, | |
105 | .gfx_update = nextfb_update, | |
106 | }; | |
107 | ||
108 | static 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 | ||
124 | static 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 | ||
134 | static 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 | ||
141 | static void nextfb_register_types(void) | |
142 | { | |
143 | type_register_static(&nextfb_info); | |
144 | } | |
145 | ||
146 | type_init(nextfb_register_types) |