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| author | Jacob Pan <jacob.jun.pan@intel.com> | 2009-11-09 11:24:14 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-02-19 16:25:17 -0800 |
| commit | ef3548668c02cc8c3922f4423f32b53e662811c6 (patch) | |
| tree | c9f2b35d0614185bcecd31c94a564ca7e03ca53f /arch/x86/include/asm/i8259.h | |
| parent | 35f720c5930f689647d51ad77e2a8d6f0abf66c8 (diff) | |
| download | linux-ef3548668c02cc8c3922f4423f32b53e662811c6.tar.gz linux-ef3548668c02cc8c3922f4423f32b53e662811c6.tar.bz2 linux-ef3548668c02cc8c3922f4423f32b53e662811c6.zip | |
x86, pic: Introduce legacy_pic abstraction
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>
Diffstat (limited to 'arch/x86/include/asm/i8259.h')
| -rw-r--r-- | arch/x86/include/asm/i8259.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/include/asm/i8259.h b/arch/x86/include/asm/i8259.h index 58d7091eeb1f..e8a3e05c2882 100644 --- a/arch/x86/include/asm/i8259.h +++ b/arch/x86/include/asm/i8259.h @@ -57,6 +57,19 @@ static inline void outb_pic(unsigned char value, unsigned int port) extern struct irq_chip i8259A_chip; +struct legacy_pic { + int nr_legacy_irqs; + struct irq_chip *chip; + void (*mask_all)(void); + void (*restore_mask)(void); + void (*init)(int auto_eoi); + int (*irq_pending)(unsigned int irq); + void (*make_irq)(unsigned int irq); +}; + +extern struct legacy_pic *legacy_pic; +extern struct legacy_pic null_legacy_pic; + extern void mask_8259A(void); extern void unmask_8259A(void); |