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Annotation of qemu/roms/SLOF/board-js2x/slof/ioapic.fs, revision 1.1

1.1     ! root        1: \ *****************************************************************************
        !             2: \ * Copyright (c) 2004, 2008 IBM Corporation
        !             3: \ * All rights reserved.
        !             4: \ * This program and the accompanying materials
        !             5: \ * are made available under the terms of the BSD License
        !             6: \ * which accompanies this distribution, and is available at
        !             7: \ * http://www.opensource.org/licenses/bsd-license.php
        !             8: \ *
        !             9: \ * Contributors:
        !            10: \ *     IBM Corporation - initial implementation
        !            11: \ ****************************************************************************/
        !            12: 
        !            13: \ ( ioapic-addr -- )
        !            14: \ IO-APIC setup.
        !            15: 
        !            16: CONSTANT ioapic
        !            17: 
        !            18: : ioapic@  ( offset -- x )  ioapic rb! ioapic 10 + rl@-le ;
        !            19: : ioapic!  ( x offset -- )  ioapic rb! ioapic 10 + rl!-le ;
        !            20: 
        !            21: : init-ioapic  ( irq# -- )
        !            22:    1a000 or 1 ioapic@ 10 rshift 1+ 0  ?DO
        !            23:       0 i 2* 11 + ioapic! dup
        !            24:       \ move all ISA IRQs to 40 and higher,
        !            25:       \ as to not conflict with U3/U4 internal
        !            26:       \ IRQs. ISA IRQs are positive edge.
        !            27:       dup ff and 0c <  IF  a000 - 40 +  THEN
        !            28:       i 2* 10 + ioapic! 1+  LOOP  drop
        !            29: ;
        !            30: 
        !            31: : dump-ioapic  ( -- )
        !            32:    1 ioapic@ 10 rshift 1+
        !            33:    dup cr . ." irqs" 0  ?DO
        !            34:       cr i 2 0.r space i 2* 11 + ioapic@ 8 0.r
        !            35:       i 2* 10 + ioapic@ 8 0.r  LOOP
        !            36: ;

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