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/sysbus.h" 29 30 #define PS2_MOUSE_BUTTON_LEFT 0x01 31 #define PS2_MOUSE_BUTTON_RIGHT 0x02 32 #define PS2_MOUSE_BUTTON_MIDDLE 0x04 33 #define PS2_MOUSE_BUTTON_SIDE 0x08 34 #define PS2_MOUSE_BUTTON_EXTRA 0x10 35 36 struct PS2DeviceClass { 37 SysBusDeviceClass parent_class; 38 39 DeviceReset parent_reset; 40 }; 41 42 /* 43 * PS/2 buffer size. Keep 256 bytes for compatibility with 44 * older QEMU versions. 45 */ 46 #define PS2_BUFFER_SIZE 256 47 48 typedef struct { 49 uint8_t data[PS2_BUFFER_SIZE]; 50 int rptr, wptr, cwptr, count; 51 } PS2Queue; 52 53 struct PS2State { 54 SysBusDevice parent_obj; 55 56 PS2Queue queue; 57 int32_t write_cmd; 58 void (*update_irq)(void *, int); 59 void *update_arg; 60 }; 61 62 #define TYPE_PS2_DEVICE "ps2-device" 63 OBJECT_DECLARE_TYPE(PS2State, PS2DeviceClass, PS2_DEVICE) 64 65 struct PS2KbdState { 66 PS2State parent_obj; 67 68 int scan_enabled; 69 int translate; 70 int scancode_set; /* 1=XT, 2=AT, 3=PS/2 */ 71 int ledstate; 72 bool need_high_bit; 73 unsigned int modifiers; /* bitmask of MOD_* constants above */ 74 }; 75 76 #define TYPE_PS2_KBD_DEVICE "ps2-kbd" 77 OBJECT_DECLARE_SIMPLE_TYPE(PS2KbdState, PS2_KBD_DEVICE) 78 79 struct PS2MouseState { 80 PS2State parent_obj; 81 82 uint8_t mouse_status; 83 uint8_t mouse_resolution; 84 uint8_t mouse_sample_rate; 85 uint8_t mouse_wrap; 86 uint8_t mouse_type; /* 0 = PS2, 3 = IMPS/2, 4 = IMEX */ 87 uint8_t mouse_detect_state; 88 int mouse_dx; /* current values, needed for 'poll' mode */ 89 int mouse_dy; 90 int mouse_dz; 91 int mouse_dw; 92 uint8_t mouse_buttons; 93 }; 94 95 #define TYPE_PS2_MOUSE_DEVICE "ps2-mouse" 96 OBJECT_DECLARE_SIMPLE_TYPE(PS2MouseState, PS2_MOUSE_DEVICE) 97 98 /* ps2.c */ 99 void *ps2_kbd_init(void (*update_irq)(void *, int), void *update_arg); 100 void *ps2_mouse_init(void (*update_irq)(void *, int), void *update_arg); 101 void ps2_write_mouse(PS2MouseState *s, int val); 102 void ps2_write_keyboard(PS2KbdState *s, int val); 103 uint32_t ps2_read_data(PS2State *s); 104 void ps2_queue_noirq(PS2State *s, int b); 105 void ps2_raise_irq(PS2State *s); 106 void ps2_queue(PS2State *s, int b); 107 void ps2_queue_2(PS2State *s, int b1, int b2); 108 void ps2_queue_3(PS2State *s, int b1, int b2, int b3); 109 void ps2_queue_4(PS2State *s, int b1, int b2, int b3, int b4); 110 void ps2_keyboard_set_translation(PS2KbdState *s, int mode); 111 void ps2_mouse_fake_event(PS2MouseState *s); 112 int ps2_queue_empty(PS2State *s); 113 114 #endif /* HW_PS2_H */ 115