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Annotation of qemu/roms/SLOF/board-js2x/slof/ioapic.fs, revision 1.1.1.1

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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