x86, pic: Introduce legacy_pic abstraction

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This patch makes i8259A like legacy programmable interrupt controller
code into a driver so that legacy pic functions can be selected at
runtime based on platform information, such as HW subarchitecure ID.
Default structure of legacy_pic maintains the current code path for
x86pc.

Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com>
LKML-Reference: <43F901BD926A4E43B106BF17856F07559FB80D03@orsmsx508.amr.corp.intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

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Jacob Pan 2009-11-09 11:24:14 -08:00 • committed by H. Peter Anvin

parent 35f720c593

commit ef3548668c

2 changed files with 56 additions and 0 deletions

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13

arch/x86/include/asm/i8259.h

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43

arch/x86/kernel/i8259.c

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