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powerpc/book3e-64: Add helper function to setup IVORs

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Not all 64-bit Book-3E parts will have fixed IVORs so add a function that
cpusetup code can call to setup the base IVORs (0..15) to match the fixed
offsets.  We need to 'or' part of interrupt_base_book3e into the IVORs
since on parts that have them the IVPR doesn't extend as far down.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Kumar Gala 2009-08-18 19:08:32 +00:00 committed by Benjamin Herrenschmidt
parent 6c188829d2
commit 4b98d9e713
2 changed files with 23 additions and 0 deletions
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4
arch/powerpc/include/asm/exception-64e.h
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@ -196,6 +196,10 @@ exc_##label##_book3e:
#define TLB_MISS_STATS_SAVE_INFO
#endif
#define SET_IVOR(vector_number, vector_offset) \
li r3,vector_offset@l; \
ori r3,r3,interrupt_base_book3e@l; \
mtspr SPRN_IVOR##vector_number,r3;
#endif /* _ASM_POWERPC_EXCEPTION_64E_H */

19
arch/powerpc/kernel/exceptions-64e.S
View file

@ -782,5 +782,24 @@ _STATIC(init_thread_book3e)
blr
_GLOBAL(__setup_base_ivors)
SET_IVOR(0, 0x020) /* Critical Input */
SET_IVOR(1, 0x000) /* Machine Check */
SET_IVOR(2, 0x060) /* Data Storage */
SET_IVOR(3, 0x080) /* Instruction Storage */
SET_IVOR(4, 0x0a0) /* External Input */
SET_IVOR(5, 0x0c0) /* Alignment */
SET_IVOR(6, 0x0e0) /* Program */
SET_IVOR(7, 0x100) /* FP Unavailable */
SET_IVOR(8, 0x120) /* System Call */
SET_IVOR(9, 0x140) /* Auxiliary Processor Unavailable */
SET_IVOR(10, 0x160) /* Decrementer */
SET_IVOR(11, 0x180) /* Fixed Interval Timer */
SET_IVOR(12, 0x1a0) /* Watchdog Timer */
SET_IVOR(13, 0x1c0) /* Data TLB Error */
SET_IVOR(14, 0x1e0) /* Instruction TLB Error */
SET_IVOR(15, 0x040) /* Debug */
sync
blr