mirror of
https://github.com/reactos/reactos.git
synced 2024-11-01 12:26:32 +00:00
148 lines
4.6 KiB
C
148 lines
4.6 KiB
C
/*
|
|
* PROJECT: ReactOS KDBG Kernel Debugger Terminal Driver
|
|
* LICENSE: GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
|
|
* PURPOSE: PS/2 Keyboard driver
|
|
* COPYRIGHT: Copyright 2001 David Welch <welch@cwcom.net>
|
|
* Copyright 2004 Art Yerkes <ayerkes@speakeasy.net>
|
|
* Copyright 2005 Gregor Anich <blight@blight.eu.org>
|
|
* Copyright 2009-2011 Dmitry Gorbachev <gorbachev@reactos.org>
|
|
*
|
|
* NOTE: Adapted from historic PS/2 keyboard driver authored by
|
|
* Victor Kirhenshtein <sauros@iname.com> and Jason Filby <jasonfilby@yahoo.com>
|
|
*/
|
|
|
|
/* INCLUDES ******************************************************************/
|
|
|
|
#include <ntoskrnl.h>
|
|
|
|
#define KBD_STATUS_REG 0x64
|
|
#define KBD_CNTL_REG 0x64
|
|
#define KBD_DATA_REG 0x60
|
|
|
|
#define KBD_STAT_OBF 0x01
|
|
#define KBD_STAT_IBF 0x02
|
|
|
|
#define CTRL_WRITE_MOUSE 0xD4
|
|
#define MOU_ENAB 0xF4
|
|
#define MOU_DISAB 0xF5
|
|
#define MOUSE_ACK 0xFA
|
|
|
|
#define KBD_DISABLE_MOUSE 0xA7
|
|
#define KBD_ENABLE_MOUSE 0xA8
|
|
|
|
#define kbd_write_command(cmd) WRITE_PORT_UCHAR((PUCHAR)KBD_CNTL_REG,cmd)
|
|
#define kbd_write_data(cmd) WRITE_PORT_UCHAR((PUCHAR)KBD_DATA_REG,cmd)
|
|
#define kbd_read_input() READ_PORT_UCHAR((PUCHAR)KBD_DATA_REG)
|
|
#define kbd_read_status() READ_PORT_UCHAR((PUCHAR)KBD_STATUS_REG)
|
|
|
|
static unsigned char keyb_layout[2][128] =
|
|
{
|
|
"\000\0331234567890-=\177\t" /* 0x00 - 0x0f */
|
|
"qwertyuiop[]\r\000as" /* 0x10 - 0x1f */
|
|
"dfghjkl;'`\000\\zxcv" /* 0x20 - 0x2f */
|
|
"bnm,./\000*\000 \000\201\202\203\204\205" /* 0x30 - 0x3f */
|
|
"\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
|
|
"230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
|
|
"\r\000/" /* 0x60 - 0x6f */
|
|
,
|
|
"\000\033!@#$%^&*()_+\177\t" /* 0x00 - 0x0f */
|
|
"QWERTYUIOP{}\r\000AS" /* 0x10 - 0x1f */
|
|
"DFGHJKL:\"`\000\\ZXCV" /* 0x20 - 0x2f */
|
|
"BNM<>?\000*\000 \000\201\202\203\204\205" /* 0x30 - 0x3f */
|
|
"\206\207\210\211\212\000\000789-456+1" /* 0x40 - 0x4f */
|
|
"230\177\000\000\213\214\000\000\000\000\000\000\000\000\000\000" /* 0x50 - 0x5f */
|
|
"\r\000/" /* 0x60 - 0x6f */
|
|
};
|
|
|
|
typedef UCHAR byte_t;
|
|
|
|
/* FUNCTIONS *****************************************************************/
|
|
|
|
static VOID
|
|
KbdSendCommandToMouse(UCHAR Command)
|
|
{
|
|
ULONG Retry = 20000;
|
|
|
|
while (kbd_read_status() & KBD_STAT_OBF && Retry--)
|
|
{
|
|
kbd_read_input();
|
|
KeStallExecutionProcessor(50);
|
|
}
|
|
|
|
Retry = 20000;
|
|
while (kbd_read_status() & KBD_STAT_IBF && Retry--)
|
|
KeStallExecutionProcessor(50);
|
|
|
|
kbd_write_command(CTRL_WRITE_MOUSE);
|
|
|
|
Retry = 20000;
|
|
while (kbd_read_status() & KBD_STAT_IBF && Retry--)
|
|
KeStallExecutionProcessor(50);
|
|
|
|
kbd_write_data(Command);
|
|
|
|
Retry = 20000;
|
|
while (!(kbd_read_status() & KBD_STAT_OBF) && Retry--)
|
|
KeStallExecutionProcessor(50);
|
|
|
|
if (kbd_read_input() != MOUSE_ACK) { ; }
|
|
|
|
return;
|
|
}
|
|
|
|
VOID KbdEnableMouse(VOID)
|
|
{
|
|
KbdSendCommandToMouse(MOU_ENAB);
|
|
}
|
|
|
|
VOID KbdDisableMouse(VOID)
|
|
{
|
|
KbdSendCommandToMouse(MOU_DISAB);
|
|
}
|
|
|
|
CHAR
|
|
KdbpTryGetCharKeyboard(PULONG ScanCode, ULONG Retry)
|
|
{
|
|
static byte_t last_key = 0;
|
|
static byte_t shift = 0;
|
|
char c;
|
|
BOOLEAN KeepRetrying = (Retry == 0);
|
|
|
|
while (KeepRetrying || Retry-- > 0)
|
|
{
|
|
while (kbd_read_status() & KBD_STAT_OBF)
|
|
{
|
|
byte_t scancode;
|
|
|
|
scancode = kbd_read_input();
|
|
|
|
/* check for SHIFT-keys */
|
|
if (((scancode & 0x7F) == 42) || ((scancode & 0x7F) == 54))
|
|
{
|
|
shift = !(scancode & 0x80);
|
|
continue;
|
|
}
|
|
|
|
/* ignore all other RELEASED-codes */
|
|
if (scancode & 0x80)
|
|
{
|
|
last_key = 0;
|
|
}
|
|
else if (last_key != scancode)
|
|
{
|
|
//printf("kbd: %d, %d, %c\n", scancode, last_key, keyb_layout[shift][scancode]);
|
|
last_key = scancode;
|
|
c = keyb_layout[shift][scancode];
|
|
*ScanCode = scancode;
|
|
|
|
if (c > 0)
|
|
return c;
|
|
}
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/* EOF */
|