37 lines
1.2 KiB
Forth
37 lines
1.2 KiB
Forth
|
\ *****************************************************************************
|
||
|
|
\ * Copyright (c) 2004, 2008 IBM Corporation
|
||
|
|
\ * All rights reserved.
|
||
|
|
\ * This program and the accompanying materials
|
||
|
|
\ * are made available under the terms of the BSD License
|
||
|
|
\ * which accompanies this distribution, and is available at
|
||
|
|
\ * http://www.opensource.org/licenses/bsd-license.php
|
||
|
|
\ *
|
||
|
|
\ * Contributors:
|
||
|
|
\ * IBM Corporation - initial implementation
|
||
|
|
\ ****************************************************************************/
|
||
|
|
|
||
|
|
\ ( ioapic-addr -- )
|
||
|
|
\ IO-APIC setup.
|
||
|
|
|
||
|
|
CONSTANT ioapic
|
||
|
|
|
||
|
|
: ioapic@ ( offset -- x ) ioapic rb! ioapic 10 + rl@-le ;
|
||
|
|
: ioapic! ( x offset -- ) ioapic rb! ioapic 10 + rl!-le ;
|
||
|
|
|
||
|
|
: init-ioapic ( irq# -- )
|
||
|
|
1a000 or 1 ioapic@ 10 rshift 1+ 0 ?DO
|
||
|
|
0 i 2* 11 + ioapic! dup
|
||
|
|
\ move all ISA IRQs to 40 and higher,
|
||
|
|
\ as to not conflict with U3/U4 internal
|
||
|
|
\ IRQs. ISA IRQs are positive edge.
|
||
|
|
dup ff and 0c < IF a000 - 40 + THEN
|
||
|
|
i 2* 10 + ioapic! 1+ LOOP drop
|
||
|
|
;
|
||
|
|
|
||
|
|
: dump-ioapic ( -- )
|
||
|
|
1 ioapic@ 10 rshift 1+
|
||
|
|
dup cr . ." irqs" 0 ?DO
|
||
|
|
cr i 2 0.r space i 2* 11 + ioapic@ 8 0.r
|
||
|
|
i 2* 10 + ioapic@ 8 0.r LOOP
|
||
|
|
;
|