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Diffstat (limited to 'c/src/lib/libbsp/i386/pc386/console/inch.c')
-rw-r--r--c/src/lib/libbsp/i386/pc386/console/inch.c298
1 files changed, 32 insertions, 266 deletions
diff --git a/c/src/lib/libbsp/i386/pc386/console/inch.c b/c/src/lib/libbsp/i386/pc386/console/inch.c
index f355d6979d..3aa3ad706d 100644
--- a/c/src/lib/libbsp/i386/pc386/console/inch.c
+++ b/c/src/lib/libbsp/i386/pc386/console/inch.c
@@ -18,8 +18,9 @@
| With the following copyright notice:
| With the following copyright notice:
| **************************************************************************
-| * COPYRIGHT (c) 1989-1999.
+| * COPYRIGHT (c) 1989-1998.
| * On-Line Applications Research Corporation (OAR).
+| * Copyright assigned to U.S. Government, 1994.
| *
| * The license and distribution terms for this file may be
| * found in found in the file LICENSE in this distribution or at
@@ -35,38 +36,9 @@
/*-------------------------------------------------------------------------+
| Constants
+--------------------------------------------------------------------------*/
-#define KBD_CTL 0x61 /* -------------------------------- */
-#define KBD_DATA 0x60 /* Ports for PC keyboard controller */
-#define KBD_STATUS 0x64 /* -------------------------------- */
+#define KBD_BUF_SIZE 256
-#define KBD_BUF_SIZE 256
-
-/*-------------------------------------------------------------------------+
-| Global Variables
-+--------------------------------------------------------------------------*/
-static char key_map[] =
-{
- 0,033,'1','2','3','4','5','6','7','8','9','0','-','=','\b','\t',
- 'q','w','e','r','t','y','u','i','o','p','[',']',015,0x80,
- 'a','s','d','f','g','h','j','k','l',';',047,0140,0x80,
- 0134,'z','x','c','v','b','n','m',',','.','/',0x80,
- '*',0x80,' ',0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,
- 0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,
- 0x80,0x80,0x80,'0',0177
-}; /* Keyboard scancode -> character map with no modifiers. */
-
-static char shift_map[] =
-{
- 0,033,'!','@','#','$','%','^','&','*','(',')','_','+','\b','\t',
- 'Q','W','E','R','T','Y','U','I','O','P','{','}',015,0x80,
- 'A','S','D','F','G','H','J','K','L',':',042,'~',0x80,
- '|','Z','X','C','V','B','N','M','<','>','?',0x80,
- '*',0x80,' ',0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,0x80,
- 0x80,0x80,0x80,0x80,'7','8','9',0x80,'4','5','6',0x80,
- '1','2','3','0',177
-}; /* Keyboard scancode -> character map with SHIFT key modifier. */
-
-static char kbd_buffer[KBD_BUF_SIZE];
+static unsigned short kbd_buffer[KBD_BUF_SIZE];
static rtems_unsigned16 kbd_first = 0;
static rtems_unsigned16 kbd_last = 0;
static rtems_unsigned16 kbd_end = KBD_BUF_SIZE - 1;
@@ -84,249 +56,43 @@ void rtemsReboot(void)
outport_byte(0x64, 0xFE); /* use keyboard controler to do the job... */
} /* rtemsReboot */
-/*-------------------------------------------------------------------------+
-| Function: _IBMPC_scankey
-| Description: This function can be called during a poll for input, or by
-| an ISR. Basically any time you want to process a keypress.
-| Global Variables: key_map, shift_map.
-| Arguments: outChar - character read in case of a valid reading,
-| otherwise unchanged.
-| Returns: TRUE in case a valid character has been read,
-| FALSE otherwise.
-+--------------------------------------------------------------------------*/
-rtems_boolean
-_IBMPC_scankey(char *outChar)
-{
- unsigned char inChar;
- static int alt_pressed = 0;
- static int ctrl_pressed = 0;
- static int shift_pressed = 0;
- static int caps_pressed = 0;
- static int extended = 0;
-
- *outChar = NULL; /* default value if we return FALSE */
-
- /* Read keyboard controller, toggle enable */
- inport_byte(KBD_CTL, inChar);
- outport_byte(KBD_CTL, inChar & ~0x80);
- outport_byte(KBD_CTL, inChar | 0x80);
- outport_byte(KBD_CTL, inChar & ~0x80);
- /* See if it has data */
- inport_byte(KBD_STATUS, inChar);
- if ((inChar & 0x01) == 0)
- return FALSE;
-
- /* Read the data. Handle nonsense with shift, control, etc. */
- inport_byte(KBD_DATA, inChar);
-
- if (extended)
- extended--;
-
- switch (inChar)
- {
- case 0xe0:
- extended = 2;
- return FALSE;
- break;
- case 0x38:
- alt_pressed = 1;
- return FALSE;
- break;
- case 0xb8:
- alt_pressed = 0;
- return FALSE;
- break;
-
- case 0x1d:
- ctrl_pressed = 1;
- return FALSE;
- break;
- case 0x9d:
- ctrl_pressed = 0;
- return FALSE;
- break;
-
- case 0x2a:
- if (extended)
- return FALSE;
- case 0x36:
- shift_pressed = 1;
- return FALSE;
- break;
- case 0xaa:
- if (extended)
- return FALSE;
- case 0xb6:
- shift_pressed = 0;
- return FALSE;
- break;
-
- case 0x3a:
- caps_pressed = 1;
- return FALSE;
- break;
- case 0xba:
- caps_pressed = 0;
- return FALSE;
- break;
-
- case 0x53:
- if (ctrl_pressed && alt_pressed)
- rtemsReboot(); /* ctrl+alt+del -> reboot */
- break;
-
- /*
- * Ignore unrecognized keys--usually arrow and such
- */
- default:
- if ((inChar & 0x80) || (inChar > 0x39))
- /* High-bit on means key is being released, not pressed */
- return FALSE;
- break;
- } /* switch */
-
- /* Strip high bit, look up in our map */
- inChar &= 0x7f;
- if (ctrl_pressed)
- {
- *outChar = key_map[inChar];
- *outChar &= 037;
- }
- else
- {
- *outChar = shift_pressed ? shift_map[inChar] : key_map[inChar];
- if (caps_pressed)
- {
- if (*outChar >= 'A' && *outChar <= 'Z')
- *outChar += 'a' - 'A';
- else if (*outChar >= 'a' && *outChar <= 'z')
- *outChar -= 'a' - 'A';
- }
- }
-
- return TRUE;
-} /* _IBMPC_scankey */
-
-/*-------------------------------------------------------------------------+
-| Function: _IBMPC_keyboard_isr
-| Description: Interrupt Service Routine for keyboard (0x01) IRQ.
-| Global Variables: kbd_buffer, kbd_first, kbd_last.
-| Arguments: vector - standard RTEMS argument - see documentation.
-| Returns: standard return value - see documentation.
-+--------------------------------------------------------------------------*/
-void _IBMPC_keyboard_isr()
+#define disable __asm__ __volatile__("cli")
+#define enable __asm__ __volatile__("sti");
+/*
+ * Check if a key has been pressed. This is a non-destructive
+ * call, meaning, it keeps the key in the buffer.
+ */
+int rtems_kbpoll( void )
{
- if (_IBMPC_scankey(&kbd_buffer[kbd_last]))
- {
- /* Got one; save it if there is enough room in buffer. */
- unsigned int next = (kbd_last == kbd_end) ? 0 : kbd_last + 1;
-
- if (next != kbd_first)
- {
- kbd_last = next;
- }
- }
-} /* _IBMPC_keyboard_isr */
-
+ int rc;
+ disable;
+ rc = ( kbd_first != kbd_last ) ? TRUE : FALSE;
+ enable;
+ return rc;
+}
-/*-------------------------------------------------------------------------+
-| Function: _IBMPC_chrdy
-| Description: Check keyboard ISR buffer and return character if not empty.
-| Global Variables: kbd_buffer, kbd_first, kbd_last.
-| Arguments: c - character read if keyboard buffer not empty, otherwise
-| unchanged.
-| Returns: TRUE if keyboard buffer not empty, FALSE otherwise.
-+--------------------------------------------------------------------------*/
-rtems_boolean
-_IBMPC_chrdy(char *c)
+int getch( void )
{
- /* FIX ME!!! It doesn't work without something like the following line.
- Find out why! */
- printk("");
-
- /* Check buffer our ISR builds */
- if (kbd_first != kbd_last)
+ int c;
+ while( kbd_first == kbd_last )
{
- *c = kbd_buffer[kbd_first];
-
- kbd_first = (kbd_first + 1) % KBD_BUF_SIZE;
- return TRUE;
+ rtems_task_wake_after( 10 );
}
- else
- return FALSE;
-} /* _IBMPC_chrdy */
-
-
-/*-------------------------------------------------------------------------+
-| Function: _IBMPC_inch
-| Description: Poll keyboard until a character is ready and return it.
-| Global Variables: None.
-| Arguments: None.
-| Returns: character read from keyboard.
-+--------------------------------------------------------------------------*/
-char
-_IBMPC_inch(void)
-{
- char c;
- while (!_IBMPC_chrdy(&c))
- continue;
-
- return c;
-} /* _IBMPC_inch */
-
-
- /*
- * Routine that can be used before interrupt management is initialized.
- */
-
-char
-BSP_wait_polled_input(void)
-{
- char c;
- while (!_IBMPC_scankey(&c))
- continue;
-
+ c = kbd_buffer[ kbd_first ];
+ kbd_first = (kbd_first + 1) % KBD_BUF_SIZE;
return c;
}
-/*-------------------------------------------------------------------------+
-| Function: _IBMPC_inch_sleep
-| Description: If charcter is ready return it, otherwise sleep until
-| it is ready
-| Global Variables: None.
-| Arguments: None.
-| Returns: character read from keyboard.
-+--------------------------------------------------------------------------*/
-char
-_IBMPC_inch_sleep(void)
+void add_to_queue( unsigned short b )
{
- char c;
- rtems_interval ticks_per_second;
-
- ticks_per_second = 0;
-
- for(;;)
- {
- if(_IBMPC_chrdy(&c))
- {
- return c;
- }
-
- if(ticks_per_second == 0)
- {
- rtems_clock_get(RTEMS_CLOCK_GET_TICKS_PER_SECOND,
- &ticks_per_second);
- }
- rtems_task_wake_after((ticks_per_second+24)/25);
- }
-
- return c;
-} /* _IBMPC_inch */
-
-
-
-
-
+ unsigned int next;
+ kbd_buffer[ kbd_last ] = b;
+ next = (kbd_last == kbd_end) ? 0 : kbd_last + 1;
+ if( next != kbd_first )
+ {
+ kbd_last = next;
+ }
+}
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