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1 /*
2 * QEMU PS/2 keyboard/mouse emulation
3 *
4 * Copyright (C) 2003 Fabrice Bellard
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
25 #ifndef HW_PS2_H
26 #define HW_PS2_H
27
28 #include "hw/core/sysbus.h"
29 #include "ui/input.h"
30
31 #define PS2_MOUSE_BUTTON_LEFT 0x01
32 #define PS2_MOUSE_BUTTON_RIGHT 0x02
33 #define PS2_MOUSE_BUTTON_MIDDLE 0x04
34 #define PS2_MOUSE_BUTTON_SIDE 0x08
35 #define PS2_MOUSE_BUTTON_EXTRA 0x10
36
37 struct PS2DeviceClass {
38 SysBusDeviceClass parent_class;
39
40 ResettablePhases parent_phases;
41 };
42
43 /*
44 * PS/2 buffer size. Keep 256 bytes for compatibility with
45 * older QEMU versions.
46 */
47 #define PS2_BUFFER_SIZE 256
48
49 typedef struct {
50 uint8_t data[PS2_BUFFER_SIZE];
51 int rptr, wptr, cwptr, count;
52 } PS2Queue;
53
54 /* Output IRQ */
55 #define PS2_DEVICE_IRQ 0
56
57 struct PS2State {
58 SysBusDevice parent_obj;
59
60 PS2Queue queue;
61 int32_t write_cmd;
62 qemu_irq irq;
63 QemuInputHandlerState *hs;
64 };
65
66 #define TYPE_PS2_DEVICE "ps2-device"
67 OBJECT_DECLARE_TYPE(PS2State, PS2DeviceClass, PS2_DEVICE)
68
69 struct PS2KbdState {
70 PS2State parent_obj;
71
72 int scan_enabled;
73 int translate;
74 int scancode_set; /* 1=XT, 2=AT, 3=PS/2 */
75 int ledstate;
76 bool need_high_bit;
77 unsigned int modifiers; /* bitmask of MOD_* constants above */
78 };
79
80 #define TYPE_PS2_KBD_DEVICE "ps2-kbd"
81 OBJECT_DECLARE_SIMPLE_TYPE(PS2KbdState, PS2_KBD_DEVICE)
82
83 struct PS2MouseState {
84 PS2State parent_obj;
85
86 uint8_t mouse_status;
87 uint8_t mouse_resolution;
88 uint8_t mouse_sample_rate;
89 uint8_t mouse_wrap;
90 uint8_t mouse_type; /* 0 = PS2, 3 = IMPS/2, 4 = IMEX */
91 uint8_t mouse_detect_state;
92 int mouse_dx; /* current values, needed for 'poll' mode */
93 int mouse_dy;
94 int mouse_dz;
95 int mouse_dw;
96 uint8_t mouse_buttons;
97 };
98
99 #define TYPE_PS2_MOUSE_DEVICE "ps2-mouse"
100 OBJECT_DECLARE_SIMPLE_TYPE(PS2MouseState, PS2_MOUSE_DEVICE)
101
102 /* ps2.c */
103 void ps2_write_mouse(PS2MouseState *s, int val);
104 void ps2_write_keyboard(PS2KbdState *s, int val);
105 uint32_t ps2_read_data(PS2State *s);
106 void ps2_queue_noirq(PS2State *s, int b);
107 void ps2_queue(PS2State *s, int b);
108 void ps2_queue_2(PS2State *s, int b1, int b2);
109 void ps2_queue_3(PS2State *s, int b1, int b2, int b3);
110 void ps2_queue_4(PS2State *s, int b1, int b2, int b3, int b4);
111 void ps2_keyboard_set_translation(PS2KbdState *s, int mode);
112 void ps2_mouse_fake_event(PS2MouseState *s);
113 int ps2_queue_empty(PS2State *s);
114
115 #endif /* HW_PS2_H */