xref: /openbmc/qemu/include/hw/display/macfb.h (revision 7a5951f6)
1 /*
2  * QEMU Motorola 680x0 Macintosh Video Card Emulation
3  *                 Copyright (c) 2012-2018 Laurent Vivier
4  *
5  * some parts from QEMU G364 framebuffer Emulator.
6  *                 Copyright (c) 2007-2011 Herve Poussineau
7  *
8  * This work is licensed under the terms of the GNU GPL, version 2 or later.
9  * See the COPYING file in the top-level directory.
10  *
11  */
12 
13 #ifndef MACFB_H
14 #define MACFB_H
15 
16 #include "exec/memory.h"
17 #include "hw/irq.h"
18 #include "hw/nubus/nubus.h"
19 #include "hw/sysbus.h"
20 #include "ui/console.h"
21 #include "qemu/timer.h"
22 
23 typedef enum  {
24     MACFB_DISPLAY_APPLE_21_COLOR = 0,
25     MACFB_DISPLAY_APPLE_PORTRAIT = 1,
26     MACFB_DISPLAY_APPLE_12_RGB = 2,
27     MACFB_DISPLAY_APPLE_2PAGE_MONO = 3,
28     MACFB_DISPLAY_NTSC_UNDERSCAN = 4,
29     MACFB_DISPLAY_NTSC_OVERSCAN = 5,
30     MACFB_DISPLAY_APPLE_12_MONO = 6,
31     MACFB_DISPLAY_APPLE_13_RGB = 7,
32     MACFB_DISPLAY_16_COLOR = 8,
33     MACFB_DISPLAY_PAL1_UNDERSCAN = 9,
34     MACFB_DISPLAY_PAL1_OVERSCAN = 10,
35     MACFB_DISPLAY_PAL2_UNDERSCAN = 11,
36     MACFB_DISPLAY_PAL2_OVERSCAN = 12,
37     MACFB_DISPLAY_VGA = 13,
38     MACFB_DISPLAY_SVGA = 14,
39 } MacfbDisplayType;
40 
41 typedef struct MacFbMode {
42     uint8_t type;
43     uint8_t depth;
44     uint32_t mode_ctrl1;
45     uint32_t mode_ctrl2;
46     uint32_t width;
47     uint32_t height;
48     uint32_t stride;
49     uint32_t offset;
50 } MacFbMode;
51 
52 #define MACFB_CTRL_TOPADDR  0x200
53 #define MACFB_NUM_REGS      (MACFB_CTRL_TOPADDR / sizeof(uint32_t))
54 
55 typedef struct MacfbState {
56     MemoryRegion mem_vram;
57     MemoryRegion mem_ctrl;
58     QemuConsole *con;
59 
60     uint8_t *vram;
61     uint32_t vram_bit_mask;
62     uint32_t palette_current;
63     uint8_t color_palette[256 * 3];
64     uint32_t width, height; /* in pixels */
65     uint8_t depth;
66     uint8_t type;
67 
68     uint32_t regs[MACFB_NUM_REGS];
69     MacFbMode *mode;
70 
71     QEMUTimer *vbl_timer;
72     qemu_irq irq;
73 } MacfbState;
74 
75 #define TYPE_MACFB "sysbus-macfb"
76 OBJECT_DECLARE_SIMPLE_TYPE(MacfbSysBusState, MACFB)
77 
78 struct MacfbSysBusState {
79     SysBusDevice busdev;
80 
81     MacfbState macfb;
82 };
83 
84 #define TYPE_NUBUS_MACFB "nubus-macfb"
85 OBJECT_DECLARE_TYPE(MacfbNubusState, MacfbNubusDeviceClass, NUBUS_MACFB)
86 
87 struct MacfbNubusDeviceClass {
88     DeviceClass parent_class;
89 
90     DeviceRealize parent_realize;
91     DeviceUnrealize parent_unrealize;
92 };
93 
94 
95 struct MacfbNubusState {
96     NubusDevice busdev;
97 
98     MacfbState macfb;
99 };
100 
101 #endif
102