[NTOS:KDBG] Fix the display type of GDT TRAPGATE32.
[reactos.git] / ntoskrnl / kdbg / kdb_keyboard.c
1 /*
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS kernel
4 * FILE: ntoskrnl/kdbg/kdb_keyboard.c
5 * PURPOSE: Keyboard driver
6 *
7 * PROGRAMMERS: Victor Kirhenshtein (sauros@iname.com)
8 * Jason Filby (jasonfilby@yahoo.com)
9 */
10
11 /* INCLUDES ****************************************************************/
12
13 #include <ntoskrnl.h>
14 #define NDEBUG
15 #include <debug.h>
16
17
18 #define KBD_STATUS_REG 0x64
19 #define KBD_CNTL_REG 0x64
20 #define KBD_DATA_REG 0x60
21
22 #define KBD_STAT_OBF 0x01
23 #define KBD_STAT_IBF 0x02
24
25 #define CTRL_WRITE_MOUSE 0xD4
26 #define MOU_ENAB 0xF4
27 #define MOU_DISAB 0xF5
28 #define MOUSE_ACK 0xFA
29
30 #define KBD_DISABLE_MOUSE 0xA7
31 #define KBD_ENABLE_MOUSE 0xA8
32
33 #define kbd_write_command(cmd) WRITE_PORT_UCHAR((PUCHAR)KBD_CNTL_REG,cmd)
34 #define kbd_write_data(cmd) WRITE_PORT_UCHAR((PUCHAR)KBD_DATA_REG,cmd)
35 #define kbd_read_input() READ_PORT_UCHAR((PUCHAR)KBD_DATA_REG)
36 #define kbd_read_status() READ_PORT_UCHAR((PUCHAR)KBD_STATUS_REG)
37
38 static unsigned char keyb_layout[2][128] =
39 {
40 "\000\0331234567890-=\177\t" /* 0x00 - 0x0f */
41 "qwertyuiop[]\r\000as" /* 0x10 - 0x1f */
42 "dfghjkl;'`\000\\zxcv" /* 0x20 - 0x2f */
43 "bnm,./\000*\000 \000\201\202\203\204\205" /* 0x30 - 0x3f */
44 "\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
45 "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
46 "\r\000/" /* 0x60 - 0x6f */
47 ,
48 "\000\033!@#$%^&*()_+\177\t" /* 0x00 - 0x0f */
49 "QWERTYUIOP{}\r\000AS" /* 0x10 - 0x1f */
50 "DFGHJKL:\"`\000\\ZXCV" /* 0x20 - 0x2f */
51 "BNM<>?\000*\000 \000\201\202\203\204\205" /* 0x30 - 0x3f */
52 "\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
53 "230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
54 "\r\000/" /* 0x60 - 0x6f */
55 };
56
57 typedef UCHAR byte_t;
58
59 /* FUNCTIONS *****************************************************************/
60
61 static VOID
62 KbdSendCommandToMouse(UCHAR Command)
63 {
64 ULONG Retry = 20000;
65
66 while (kbd_read_status() & KBD_STAT_OBF && Retry--)
67 {
68 kbd_read_input();
69 KeStallExecutionProcessor(50);
70 }
71
72 Retry = 20000;
73 while (kbd_read_status() & KBD_STAT_IBF && Retry--)
74 KeStallExecutionProcessor(50);
75
76 kbd_write_command(CTRL_WRITE_MOUSE);
77
78 Retry = 20000;
79 while (kbd_read_status() & KBD_STAT_IBF && Retry--)
80 KeStallExecutionProcessor(50);
81
82 kbd_write_data(Command);
83
84 Retry = 20000;
85 while (!(kbd_read_status() & KBD_STAT_OBF) && Retry--)
86 KeStallExecutionProcessor(50);
87
88 if (kbd_read_input() != MOUSE_ACK) { ; }
89
90 return;
91 }
92
93 VOID KbdEnableMouse()
94 {
95 KbdSendCommandToMouse(MOU_ENAB);
96 }
97
98 VOID KbdDisableMouse()
99 {
100 KbdSendCommandToMouse(MOU_DISAB);
101 }
102
103 CHAR
104 KdbpTryGetCharKeyboard(PULONG ScanCode, ULONG Retry)
105 {
106 static byte_t last_key = 0;
107 static byte_t shift = 0;
108 char c;
109 BOOLEAN KeepRetrying = (Retry == 0);
110
111 while (KeepRetrying || Retry-- > 0)
112 {
113 while (kbd_read_status() & KBD_STAT_OBF)
114 {
115 byte_t scancode;
116
117 scancode = kbd_read_input();
118
119 /* check for SHIFT-keys */
120 if (((scancode & 0x7F) == 42) || ((scancode & 0x7F) == 54))
121 {
122 shift = !(scancode & 0x80);
123 continue;
124 }
125
126 /* ignore all other RELEASED-codes */
127 if (scancode & 0x80)
128 {
129 last_key = 0;
130 }
131 else if (last_key != scancode)
132 {
133 //printf("kbd: %d, %d, %c\n", scancode, last_key, keyb_layout[shift][scancode]);
134 last_key = scancode;
135 c = keyb_layout[shift][scancode];
136 *ScanCode = scancode;
137
138 if (c > 0)
139 return c;
140 }
141 }
142 }
143
144 return -1;
145 }
146
147 /* EOF */