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Ignore whitespace Rev 1786 → Rev 1787

/trunk/uspace/kbd/arch/ia32/src/kbd.c
0,0 → 1,476
/*
* Copyright (C) 2001-2004 Jakub Jermar
* Copyright (C) 2006 Josef Cejka
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
 
/** @addtogroup kbdia32 ia32
* @brief HelenOS ia32 / amd64 arch dependent parts of uspace keyboard handler.
* @ingroup kbd
* @{
*/
/** @file
* @ingroup kbdamd64
*/
 
#include <arch/kbd.h>
#include <ipc/ipc.h>
#include <unistd.h>
#include <kbd.h>
#include <keys.h>
 
/* Interesting bits for status register */
#define i8042_OUTPUT_FULL 0x1
#define i8042_INPUT_FULL 0x2
#define i8042_MOUSE_DATA 0x20
 
/* Command constants */
#define i8042_CMD_KBD 0x60
#define i8042_CMD_MOUSE 0xd4
 
/* Keyboard cmd byte */
#define i8042_KBD_IE 0x1
#define i8042_MOUSE_IE 0x2
#define i8042_KBD_DISABLE 0x10
#define i8042_MOUSE_DISABLE 0x20
#define i8042_KBD_TRANSLATE 0x40
 
/* Mouse constants */
#define MOUSE_OUT_INIT 0xf4
#define MOUSE_ACK 0xfa
 
 
#define SPECIAL 255
#define KEY_RELEASE 0x80
 
/**
* These codes read from i8042 data register are silently ignored.
*/
#define IGNORE_CODE 0x7f
 
#define PRESSED_SHIFT (1<<0)
#define PRESSED_CAPSLOCK (1<<1)
#define LOCKED_CAPSLOCK (1<<0)
 
/** Scancodes. */
#define SC_ESC 0x01
#define SC_BACKSPACE 0x0e
#define SC_LSHIFT 0x2a
#define SC_RSHIFT 0x36
#define SC_CAPSLOCK 0x3a
#define SC_SPEC_ESCAPE 0xe0
#define SC_LEFTARR 0x4b
#define SC_RIGHTARR 0x4d
#define SC_UPARR 0x48
#define SC_DOWNARR 0x50
#define SC_DELETE 0x53
#define SC_HOME 0x47
#define SC_END 0x4f
 
#define FUNCTION_KEYS 0x100
 
static volatile int keyflags; /**< Tracking of multiple keypresses. */
static volatile int lockflags; /**< Tracking of multiple keys lockings. */
 
/** Primary meaning of scancodes. */
static int sc_primary_map[] = {
SPECIAL, /* 0x00 */
SPECIAL, /* 0x01 - Esc */
'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '-', '=',
'\b', /* 0x0e - Backspace */
'\t', 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n',
SPECIAL, /* 0x1d - LCtrl */
'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', '\'',
'`',
SPECIAL, /* 0x2a - LShift */
'\\',
'z', 'x', 'c', 'v', 'b', 'n', 'm', ',', '.', '/',
SPECIAL, /* 0x36 - RShift */
'*',
SPECIAL, /* 0x38 - LAlt */
' ',
SPECIAL, /* 0x3a - CapsLock */
(FUNCTION_KEYS | 1), /* 0x3b - F1 */
(FUNCTION_KEYS | 2), /* 0x3c - F2 */
(FUNCTION_KEYS | 3), /* 0x3d - F3 */
(FUNCTION_KEYS | 4), /* 0x3e - F4 */
(FUNCTION_KEYS | 5), /* 0x3f - F5 */
(FUNCTION_KEYS | 6), /* 0x40 - F6 */
(FUNCTION_KEYS | 7), /* 0x41 - F7 */
(FUNCTION_KEYS | 8), /* 0x42 - F8 */
(FUNCTION_KEYS | 9), /* 0x43 - F9 */
(FUNCTION_KEYS | 10), /* 0x44 - F10 */
SPECIAL, /* 0x45 - NumLock */
SPECIAL, /* 0x46 - ScrollLock */
'7', '8', '9', '-',
'4', '5', '6', '+',
'1', '2', '3',
'0', '.',
SPECIAL, /* 0x54 - Alt-SysRq */
SPECIAL, /* 0x55 - F11/F12/PF1/FN */
SPECIAL, /* 0x56 - unlabelled key next to LAlt */
(FUNCTION_KEYS | 11), /* 0x57 - F11 */
(FUNCTION_KEYS | 12), /* 0x58 - F12 */
SPECIAL, /* 0x59 */
SPECIAL, /* 0x5a */
SPECIAL, /* 0x5b */
SPECIAL, /* 0x5c */
SPECIAL, /* 0x5d */
SPECIAL, /* 0x5e */
SPECIAL, /* 0x5f */
SPECIAL, /* 0x60 */
SPECIAL, /* 0x61 */
SPECIAL, /* 0x62 */
SPECIAL, /* 0x63 */
SPECIAL, /* 0x64 */
SPECIAL, /* 0x65 */
SPECIAL, /* 0x66 */
SPECIAL, /* 0x67 */
SPECIAL, /* 0x68 */
SPECIAL, /* 0x69 */
SPECIAL, /* 0x6a */
SPECIAL, /* 0x6b */
SPECIAL, /* 0x6c */
SPECIAL, /* 0x6d */
SPECIAL, /* 0x6e */
SPECIAL, /* 0x6f */
SPECIAL, /* 0x70 */
SPECIAL, /* 0x71 */
SPECIAL, /* 0x72 */
SPECIAL, /* 0x73 */
SPECIAL, /* 0x74 */
SPECIAL, /* 0x75 */
SPECIAL, /* 0x76 */
SPECIAL, /* 0x77 */
SPECIAL, /* 0x78 */
SPECIAL, /* 0x79 */
SPECIAL, /* 0x7a */
SPECIAL, /* 0x7b */
SPECIAL, /* 0x7c */
SPECIAL, /* 0x7d */
SPECIAL, /* 0x7e */
SPECIAL, /* 0x7f */
};
 
/** Secondary meaning of scancodes. */
static int sc_secondary_map[] = {
SPECIAL, /* 0x00 */
0x1b, /* 0x01 - Esc */
'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '_', '+',
SPECIAL, /* 0x0e - Backspace */
'\t', 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n',
SPECIAL, /* 0x1d - LCtrl */
'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', '"',
'~',
SPECIAL, /* 0x2a - LShift */
'|',
'Z', 'X', 'C', 'V', 'B', 'N', 'M', '<', '>', '?',
SPECIAL, /* 0x36 - RShift */
'*',
SPECIAL, /* 0x38 - LAlt */
' ',
SPECIAL, /* 0x3a - CapsLock */
SPECIAL, /* 0x3b - F1 */
SPECIAL, /* 0x3c - F2 */
SPECIAL, /* 0x3d - F3 */
SPECIAL, /* 0x3e - F4 */
SPECIAL, /* 0x3f - F5 */
SPECIAL, /* 0x40 - F6 */
SPECIAL, /* 0x41 - F7 */
SPECIAL, /* 0x42 - F8 */
SPECIAL, /* 0x43 - F9 */
SPECIAL, /* 0x44 - F10 */
SPECIAL, /* 0x45 - NumLock */
SPECIAL, /* 0x46 - ScrollLock */
'7', '8', '9', '-',
'4', '5', '6', '+',
'1', '2', '3',
'0', '.',
SPECIAL, /* 0x54 - Alt-SysRq */
SPECIAL, /* 0x55 - F11/F12/PF1/FN */
SPECIAL, /* 0x56 - unlabelled key next to LAlt */
SPECIAL, /* 0x57 - F11 */
SPECIAL, /* 0x58 - F12 */
SPECIAL, /* 0x59 */
SPECIAL, /* 0x5a */
SPECIAL, /* 0x5b */
SPECIAL, /* 0x5c */
SPECIAL, /* 0x5d */
SPECIAL, /* 0x5e */
SPECIAL, /* 0x5f */
SPECIAL, /* 0x60 */
SPECIAL, /* 0x61 */
SPECIAL, /* 0x62 */
SPECIAL, /* 0x63 */
SPECIAL, /* 0x64 */
SPECIAL, /* 0x65 */
SPECIAL, /* 0x66 */
SPECIAL, /* 0x67 */
SPECIAL, /* 0x68 */
SPECIAL, /* 0x69 */
SPECIAL, /* 0x6a */
SPECIAL, /* 0x6b */
SPECIAL, /* 0x6c */
SPECIAL, /* 0x6d */
SPECIAL, /* 0x6e */
SPECIAL, /* 0x6f */
SPECIAL, /* 0x70 */
SPECIAL, /* 0x71 */
SPECIAL, /* 0x72 */
SPECIAL, /* 0x73 */
SPECIAL, /* 0x74 */
SPECIAL, /* 0x75 */
SPECIAL, /* 0x76 */
SPECIAL, /* 0x77 */
SPECIAL, /* 0x78 */
SPECIAL, /* 0x79 */
SPECIAL, /* 0x7a */
SPECIAL, /* 0x7b */
SPECIAL, /* 0x7c */
SPECIAL, /* 0x7d */
SPECIAL, /* 0x7e */
SPECIAL, /* 0x7f */
};
 
irq_cmd_t i8042_cmds[2] = {
{ CMD_PORT_READ_1, (void *)0x64, 0, 1 },
{ CMD_PORT_READ_1, (void *)0x60, 0, 2 }
};
 
irq_code_t i8042_kbd = {
2,
i8042_cmds
};
 
static void key_released(keybuffer_t *keybuffer, unsigned char key)
{
switch (key) {
case SC_LSHIFT:
case SC_RSHIFT:
keyflags &= ~PRESSED_SHIFT;
break;
case SC_CAPSLOCK:
keyflags &= ~PRESSED_CAPSLOCK;
if (lockflags & LOCKED_CAPSLOCK)
lockflags &= ~LOCKED_CAPSLOCK;
else
lockflags |= LOCKED_CAPSLOCK;
break;
default:
break;
}
}
 
static void key_pressed(keybuffer_t *keybuffer, unsigned char key)
{
int *map = sc_primary_map;
int ascii = sc_primary_map[key];
int shift, capslock;
int letter = 0;
 
static int esc_count=0;
 
if ( key == SC_ESC ) {
esc_count++;
if ( esc_count == 3 ) {
__SYSCALL0(SYS_DEBUG_ENABLE_CONSOLE);
}
} else {
esc_count=0;
}
 
switch (key) {
case SC_LSHIFT:
case SC_RSHIFT:
keyflags |= PRESSED_SHIFT;
break;
case SC_CAPSLOCK:
keyflags |= PRESSED_CAPSLOCK;
break;
case SC_SPEC_ESCAPE:
break;
/* case SC_LEFTARR:
if (keybuffer_available(keybuffer) >= 3) {
keybuffer_push(keybuffer, 0x1b);
keybuffer_push(keybuffer, 0x5b);
keybuffer_push(keybuffer, 0x44);
}
break;
case SC_RIGHTARR:
if (keybuffer_available(keybuffer) >= 3) {
keybuffer_push(keybuffer, 0x1b);
keybuffer_push(keybuffer, 0x5b);
keybuffer_push(keybuffer, 0x43);
}
break;
case SC_UPARR:
if (keybuffer_available(keybuffer) >= 3) {
keybuffer_push(keybuffer, 0x1b);
keybuffer_push(keybuffer, 0x5b);
keybuffer_push(keybuffer, 0x41);
}
break;
case SC_DOWNARR:
if (keybuffer_available(keybuffer) >= 3) {
keybuffer_push(keybuffer, 0x1b);
keybuffer_push(keybuffer, 0x5b);
keybuffer_push(keybuffer, 0x42);
}
break;
case SC_HOME:
if (keybuffer_available(keybuffer) >= 3) {
keybuffer_push(keybuffer, 0x1b);
keybuffer_push(keybuffer, 0x4f);
keybuffer_push(keybuffer, 0x48);
}
break;
case SC_END:
if (keybuffer_available(keybuffer) >= 3) {
keybuffer_push(keybuffer, 0x1b);
keybuffer_push(keybuffer, 0x4f);
keybuffer_push(keybuffer, 0x46);
}
break;
case SC_DELETE:
if (keybuffer_available(keybuffer) >= 4) {
keybuffer_push(keybuffer, 0x1b);
keybuffer_push(keybuffer, 0x5b);
keybuffer_push(keybuffer, 0x33);
keybuffer_push(keybuffer, 0x7e);
}
break;
*/ default:
letter = ((ascii >= 'a') && (ascii <= 'z'));
capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
shift = keyflags & PRESSED_SHIFT;
if (letter && capslock)
shift = !shift;
if (shift)
map = sc_secondary_map;
if (map[key] != SPECIAL)
keybuffer_push(keybuffer, map[key]);
break;
}
}
 
 
static void wait_ready(void) {
while (i8042_status_read() & i8042_INPUT_FULL)
;
}
 
/** Register uspace irq handler
* @return
*/
int kbd_arch_init(void)
{
int i;
int mouseenabled = 0;
 
iospace_enable(task_get_id(),(void *)i8042_DATA, 5);
/* Disable kbd, enable mouse */
i8042_command_write(i8042_CMD_KBD);
wait_ready();
i8042_command_write(i8042_CMD_KBD);
wait_ready();
i8042_data_write(i8042_KBD_DISABLE);
wait_ready();
 
/* Flush all current IO */
while (i8042_status_read() & i8042_OUTPUT_FULL)
i8042_data_read();
/* Initialize mouse */
i8042_command_write(i8042_CMD_MOUSE);
wait_ready();
i8042_data_write(MOUSE_OUT_INIT);
wait_ready();
int mouseanswer = 0;
for (i=0;i < 1000; i++) {
int status = i8042_status_read();
if (status & i8042_OUTPUT_FULL) {
int data = i8042_data_read();
if (status & i8042_MOUSE_DATA) {
mouseanswer = data;
break;
}
}
usleep(1000);
}
if (mouseanswer == MOUSE_ACK) {
/* enable mouse */
mouseenabled = 1;
 
ipc_register_irq(MOUSE_IRQ, &i8042_kbd);
}
/* Enable kbd */
ipc_register_irq(KBD_IRQ, &i8042_kbd);
/* Register for irq restart */
ipc_register_irq(IPC_IRQ_KBDRESTART, NULL);
 
int newcontrol = i8042_KBD_IE | i8042_KBD_TRANSLATE;
if (mouseenabled)
newcontrol |= i8042_MOUSE_IE;
i8042_command_write(i8042_CMD_KBD);
wait_ready();
i8042_data_write(newcontrol);
wait_ready();
return 0;
}
 
/** Process keyboard & mouse events */
int kbd_arch_process(keybuffer_t *keybuffer, ipc_call_t *call)
{
int status = IPC_GET_ARG1(*call);
 
if (IPC_GET_METHOD(*call) == IPC_IRQ_KBDRESTART) {
kbd_arch_init();
return 1;
}
 
if ((status & i8042_MOUSE_DATA))
return 0;
int scan_code = IPC_GET_ARG2(*call);
if (scan_code != IGNORE_CODE) {
if (scan_code & KEY_RELEASE)
key_released(keybuffer, scan_code ^ KEY_RELEASE);
else
key_pressed(keybuffer, scan_code);
}
return 1;
}
 
/**
* @}
*/