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don't ignore the fact that scancodes are escaped.

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if not understood explicitly, print diagnostic and 
ignore scancode.
This commit is contained in:
Ben Gras 2008-12-21 03:53:25 +00:00
parent 23a158b361
commit 0579810535
1 changed files with 18 additions and 19 deletions
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37
drivers/tty/keyboard.c
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@ -692,6 +692,7 @@ int scode; /* scan code of key just struck or released */
*/
int ch, make, escape;
static int CAD_count = 0;
static int rebooting = 0;
/* Check for CTRL-ALT-DEL, and if found, halt the computer. This would
* be better done in keyboard() in case TTY is hung, except control and
@ -704,8 +705,11 @@ int scode; /* scan code of key just struck or released */
sys_abort(RBT_HALT);
}
sys_kill(INIT_PROC_NR, SIGABRT);
return -1;
rebooting = 1;
}
if(rebooting)
return -1;
/* High-order bit set on key release. */
make = (scode & KEY_RELEASE) == 0; /* true if pressed */
@ -733,6 +737,7 @@ int scode; /* scan code of key just struck or released */
alt_down = make;
break;
case CALOCK: /* Caps lock - toggle on 0 -> 1 transition */
if(escape) return -1;
if (caps_down < make) {
locks[ccurrent] ^= CAPS_LOCK;
set_leds();
@ -740,6 +745,7 @@ int scode; /* scan code of key just struck or released */
caps_down = make;
break;
case NLOCK: /* Num lock */
if(escape) return -1;
if (num_down < make) {
locks[ccurrent] ^= NUM_LOCK;
set_leds();
@ -747,6 +753,7 @@ int scode; /* scan code of key just struck or released */
num_down = make;
break;
case SLOCK: /* Scroll lock */
if(escape) return -1;
if (scroll_down < make) {
locks[ccurrent] ^= SCROLL_LOCK;
set_leds();
@ -757,7 +764,16 @@ int scode; /* scan code of key just struck or released */
esc = 1; /* Next key is escaped */
return(-1);
default: /* A normal key */
if (make) return(ch);
if(escape) {
printf("tty: ignoring escaped 0x%x\n", scode);
return -1;
}
if(!ch) {
printf("tty: ignoring unrecognized scancode 0x%x\n",
scode);
return -1;
}
if(make) return(ch);
}
/* Key release, or a shift type key. */
@ -1194,22 +1210,6 @@ PRIVATE int scan_keyboard(bp, isauxp)
unsigned char *bp;
int *isauxp;
{
#if 0 /* Is this old XT code? It doesn't match the PS/2 hardware */
/* Fetch the character from the keyboard hardware and acknowledge it. */
pvb_pair_t byte_in[2], byte_out[2];
byte_in[0].port = KEYBD; /* get the scan code for the key struck */
byte_in[1].port = PORT_B; /* strobe the keyboard to ack the char */
if(sys_vinb(byte_in, 2) != OK) /* request actual input */
printf("scan_keyboard: sys_vinb failed\n");
pv_set(byte_out[0], PORT_B, byte_in[1].value | KBIT); /* strobe bit high */
pv_set(byte_out[1], PORT_B, byte_in[1].value); /* then strobe low */
if(sys_voutb(byte_out, 2) != OK) /* request actual output */
printf("scan_keyboard: sys_voutb failed\n");
return(byte_in[0].value); /* return scan code */
#else
unsigned long b, sb;
if(sys_inb(KB_STATUS, &sb) != OK)
@ -1246,7 +1246,6 @@ int *isauxp;
kbd_send();
}
return 1;
#endif
}
/*===========================================================================*