WebSVN – HelenOS – Diff – /trunk/kernel/genarch/src/kbd/scanc_pc.c

 /*
- * Copyright (C) 2001-2004 Jakub Jermar
+ * Copyright (C) 2006 Jakub Jermar
  * 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 genarch
  * @{
  */
 /**
  * @file
- * @brief   i8042 processor driver.
+ * @brief   Scan codes for pc keyboards.
- *
- * It takes care of low-level keyboard functions.
  */
 #include <genarch/i8042/i8042.h>
-#include <arch/drivers/i8042.h>
-#include <arch/interrupt.h>
-#include <cpu.h>
-#include <arch/asm.h>
-#include <arch.h>
-#include <synch/spinlock.h>
-#include <typedefs.h>
-#include <console/chardev.h>
-#include <console/console.h>
-#include <macros.h>
-#include <interrupt.h>
-/* Keyboard commands. */
-#define KBD_ENABLE  0xf4
-#define KBD_DISABLE 0xf5
-#define KBD_ACK     0xfa
-/*
- * 60  Write 8042 Command Byte: next data byte written to port 60h is
- *     placed in 8042 command register. Format:
- *
- *    |7|6|5|4|3|2|1|0|8042 Command Byte
- *     | | | | | | | `---- 1=enable output register full interrupt
- *     | | | | | | `----- should be 0
- *     | | | | | `------ 1=set status register system, 0=clear
- *     | | | | `------- 1=override keyboard inhibit, 0=allow inhibit
- *     | | | `-------- disable keyboard I/O by driving clock line low
- *     | | `--------- disable auxiliary device, drives clock line low
- *     | `---------- IBM scancode translation 0=AT, 1=PC/XT
- *     `----------- reserved, should be 0
- */
-#define i8042_SET_COMMAND   0x60
-#define i8042_COMMAND       0x69
-#define i8042_BUFFER_FULL_MASK  0x01
-#define i8042_WAIT_MASK     0x02
-#define i8042_MOUSE_DATA        0x20
-#define SPECIAL     '?'
-#define KEY_RELEASE 0x80
-/**
- * These codes read from i8042 data register are silently ignored.
- */
-#define IGNORE_CODE 0x7f
-static void key_released(uint8_t sc);
-static void key_pressed(uint8_t sc);
-static char key_read(chardev_t *d);
-#define PRESSED_SHIFT       (1<<0)
-#define PRESSED_CAPSLOCK    (1<<1)
-#define LOCKED_CAPSLOCK     (1<<0)
-#define ACTIVE_READ_BUFF_SIZE 16    /* Must be power of 2 */
-static uint8_t active_read_buff[ACTIVE_READ_BUFF_SIZE];
-SPINLOCK_INITIALIZE(keylock);       /**< keylock protects keyflags and lockflags. */
-static volatile int keyflags;       /**< Tracking of multiple keypresses. */
-static volatile int lockflags;      /**< Tracking of multiple keys lockings. */
-static void i8042_suspend(chardev_t *);
-static void i8042_resume(chardev_t *);
-static chardev_t kbrd;
-static chardev_operations_t ops = {
-    .suspend = i8042_suspend,
-    .resume = i8042_resume,
-    .read = key_read
-};
 /** Primary meaning of scancodes. */
-static char sc_primary_map[] = {
+char 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 */
     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 */
 };
 /** Secondary meaning of scancodes. */
-static char sc_secondary_map[] = {
+char sc_secondary_map[] = {
     SPECIAL, /* 0x00 */
     SPECIAL, /* 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 */
 };
-static void i8042_interrupt(int n, istate_t *istate);
-static void i8042_wait(void);
-static iroutine oldvector;
-/** Initialize keyboard and service interrupts using kernel routine */
-void i8042_grab(void)
-{
-    oldvector = exc_register(VECTOR_KBD, "i8042_interrupt", (iroutine) i8042_interrupt);
-    i8042_wait();
-    i8042_command_write(i8042_SET_COMMAND);
-    i8042_wait();
-    i8042_data_write(i8042_COMMAND);
-    i8042_wait();
-}
-/** Resume the former interrupt vector */
-void i8042_release(void)
-{
-    if (oldvector)
-        exc_register(VECTOR_KBD, "user_interrupt", oldvector);
-}
-/** Initialize i8042. */
-void i8042_init(void)
-{
-    int i;
-    i8042_grab();
-        /* Prevent user from accidentaly releasing calling i8042_resume
-     * and disabling keyboard
-     */
-    oldvector = NULL;
-    trap_virtual_enable_irqs(1<<IRQ_KBD);
-    chardev_initialize("i8042_kbd", &kbrd, &ops);
-    stdin = &kbrd;
-    /*
-     * Clear input buffer.
-     * Number of iterations is limited to prevent infinite looping.
-     */
-    for (i = 0; (i8042_status_read() & i8042_BUFFER_FULL_MASK) && i < 100; i++) {
-        i8042_data_read();
-    }
-}
-/** Process i8042 interrupt.
- *
- * @param n Interrupt vector.
- * @param istate Interrupted state.
- */
-void i8042_interrupt(int n, istate_t *istate)
-{
-    uint8_t x;
-    uint8_t status;
-    while (((status=i8042_status_read()) & i8042_BUFFER_FULL_MASK)) {
-        x = i8042_data_read();
-        if ((status & i8042_MOUSE_DATA))
-            continue;
-        if (x & KEY_RELEASE)
-            key_released(x ^ KEY_RELEASE);
-        else
-            key_pressed(x);
-    }
-    trap_virtual_eoi();
-}
-/** Wait until the controller reads its data. */
-void i8042_wait(void) {
-    while (i8042_status_read() & i8042_WAIT_MASK) {
-        /* wait */
-    }
-}
-/** Process release of key.
- *
- * @param sc Scancode of the key being released.
- */
-void key_released(uint8_t sc)
-{
-    spinlock_lock(&keylock);
-    switch (sc) {
-        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;
-    }
-    spinlock_unlock(&keylock);
-}
-/** Process keypress.
- *
- * @param sc Scancode of the key being pressed.
- */
-void key_pressed(uint8_t sc)
-{
-    char *map = sc_primary_map;
-    char ascii = sc_primary_map[sc];
-    bool shift, capslock;
-    bool letter = false;
-    spinlock_lock(&keylock);
-    switch (sc) {
-    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:
-        chardev_push_character(&kbrd, 0x1b);
-        chardev_push_character(&kbrd, 0x5b);
-        chardev_push_character(&kbrd, 0x44);
-        break;
-    case SC_RIGHTARR:
-        chardev_push_character(&kbrd, 0x1b);
-        chardev_push_character(&kbrd, 0x5b);
-        chardev_push_character(&kbrd, 0x43);
-        break;
-    case SC_UPARR:
-        chardev_push_character(&kbrd, 0x1b);
-        chardev_push_character(&kbrd, 0x5b);
-        chardev_push_character(&kbrd, 0x41);
-        break;
-    case SC_DOWNARR:
-        chardev_push_character(&kbrd, 0x1b);
-        chardev_push_character(&kbrd, 0x5b);
-        chardev_push_character(&kbrd, 0x42);
-        break;
-    case SC_HOME:
-        chardev_push_character(&kbrd, 0x1b);
-        chardev_push_character(&kbrd, 0x4f);
-        chardev_push_character(&kbrd, 0x48);
-        break;
-    case SC_END:
-        chardev_push_character(&kbrd, 0x1b);
-        chardev_push_character(&kbrd, 0x4f);
-        chardev_push_character(&kbrd, 0x46);
-        break;
-    case SC_DELETE:
-        chardev_push_character(&kbrd, 0x1b);
-        chardev_push_character(&kbrd, 0x5b);
-        chardev_push_character(&kbrd, 0x33);
-        chardev_push_character(&kbrd, 0x7e);
-        break;
-    default:
-            letter = is_lower(ascii);
-        capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
-        shift = keyflags & PRESSED_SHIFT;
-        if (letter && capslock)
-            shift = !shift;
-        if (shift)
-            map = sc_secondary_map;
-        chardev_push_character(&kbrd, map[sc]);
-        break;
-    }
-    spinlock_unlock(&keylock);
-}
-/* Called from getc(). */
-void i8042_resume(chardev_t *d)
-{
-}
-/* Called from getc(). */
-void i8042_suspend(chardev_t *d)
-{
-}
-static uint8_t active_read_buff_read(void)
-{
-    static int i=0;
-    i &= (ACTIVE_READ_BUFF_SIZE-1);
-    if(!active_read_buff[i]) {
-        return 0;
-    }
-    return active_read_buff[i++];
-}
-static void active_read_buff_write(uint8_t ch)
-{
-    static int i=0;
-    active_read_buff[i] = ch;
-    i++;
-    i &= (ACTIVE_READ_BUFF_SIZE-1);
-    active_read_buff[i]=0;
-}
-static void active_read_key_pressed(uint8_t sc)
-{
-    char *map = sc_primary_map;
-    char ascii = sc_primary_map[sc];
-    bool shift, capslock;
-    bool letter = false;
-    /*spinlock_lock(&keylock);*/
-    switch (sc) {
-    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:
-        active_read_buff_write(0x1b);
-        active_read_buff_write(0x5b);
-        active_read_buff_write(0x44);
-        break;
-    case SC_RIGHTARR:
-        active_read_buff_write(0x1b);
-        active_read_buff_write(0x5b);
-        active_read_buff_write(0x43);
-        break;
-    case SC_UPARR:
-        active_read_buff_write(0x1b);
-        active_read_buff_write(0x5b);
-        active_read_buff_write(0x41);
-        break;
-    case SC_DOWNARR:
-        active_read_buff_write(0x1b);
-        active_read_buff_write(0x5b);
-        active_read_buff_write(0x42);
-        break;
-    case SC_HOME:
-        active_read_buff_write(0x1b);
-        active_read_buff_write(0x4f);
-        active_read_buff_write(0x48);
-        break;
-    case SC_END:
-        active_read_buff_write(0x1b);
-        active_read_buff_write(0x4f);
-        active_read_buff_write(0x46);
-        break;
-    case SC_DELETE:
-        active_read_buff_write(0x1b);
-        active_read_buff_write(0x5b);
-        active_read_buff_write(0x33);
-        active_read_buff_write(0x7e);
-        break;
-    default:
-            letter = is_lower(ascii);
-        capslock = (keyflags & PRESSED_CAPSLOCK) || (lockflags & LOCKED_CAPSLOCK);
-        shift = keyflags & PRESSED_SHIFT;
-        if (letter && capslock)
-            shift = !shift;
-        if (shift)
-            map = sc_secondary_map;
-        active_read_buff_write(map[sc]);
-        break;
-    }
-    /*spinlock_unlock(&keylock);*/
-}
-static char key_read(chardev_t *d)
-{
-    char ch;
-    while(!(ch = active_read_buff_read())) {
-        uint8_t x;
-        while (!(i8042_status_read() & i8042_BUFFER_FULL_MASK))
-            ;
-        x = i8042_data_read();
-        if (x != IGNORE_CODE) {
-            if (x & KEY_RELEASE)
-                key_released(x ^ KEY_RELEASE);
-            else
-                active_read_key_pressed(x);
-        }
-    }
-    return ch;
-}
-/** Poll for key press and release events.
- *
- * This function can be used to implement keyboard polling.
- */
-void i8042_poll(void)
-{
-    uint8_t x;
-    while (((x = i8042_status_read() & i8042_BUFFER_FULL_MASK))) {
-        x = i8042_data_read();
-        if (x != IGNORE_CODE) {
-            if (x & KEY_RELEASE)
-                key_released(x ^ KEY_RELEASE);
-            else
-                key_pressed(x);
-        }
-    }
-}
 /** @}
  */

Subversion Repositories HelenOS

(root)/trunk/kernel/genarch/src/kbd/scanc_pc.c @ 3323 – Rev 1787 → 1838