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