reactos/ntoskrnl/kdbg/kdb_keyboard.c
Timo Kreuzer 6afbc8f483 Hopefully create a branch and not destroy the svn repository.
svn path=/branches/reactos-yarotows/; revision=45219
2010-01-23 23:25:04 +00:00

150 lines
4.5 KiB
C

/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* FILE: ntoskrnl/dbg/kdb_keyboard.c
* PURPOSE: Keyboard driver
*
* PROGRAMMERS: Victor Kirhenshtein (sauros@iname.com)
* Jason Filby (jasonfilby@yahoo.com)
*/
/* INCLUDES ****************************************************************/
#include <ntoskrnl.h>
#define NDEBUG
#include <debug.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()
{
KbdSendCommandToMouse(MOU_ENAB);
// kbd_write_command(KBD_ENABLE_MOUSE);
}
VOID KbdDisableMouse()
{
KbdSendCommandToMouse(MOU_DISAB);
// kbd_write_command(KBD_DISABLE_MOUSE);
}
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 */