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powerpc: Add book3s privileged doorbell exception vectors

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Directed Privileged Doorbell Interrupts come in at 0xa00 (or
0xc000000000004a00 if relocation on exception is enabled), so add
exception vectors at these locations.

If doorbell support is not compiled in we handle it as an
unknown_exception.

Signed-off-by: Ian Munsie <imunsie@au1.ibm.com>
Tested-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Ian Munsie 2012-11-14 18:49:46 +00:00 committed by Benjamin Herrenschmidt
parent 655bb3f4e8
commit 1dbdafec5d
2 changed files with 8 additions and 2 deletions
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1
arch/powerpc/include/asm/exception-64s.h
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@ -305,6 +305,7 @@ label##_relon_hv: \
#define SOFTEN_VALUE_0x502 PACA_IRQ_EE
#define SOFTEN_VALUE_0x900 PACA_IRQ_DEC
#define SOFTEN_VALUE_0x982 PACA_IRQ_DEC
#define SOFTEN_VALUE_0xa00 PACA_IRQ_DBELL
#define SOFTEN_VALUE_0xe80 PACA_IRQ_DBELL
#define SOFTEN_VALUE_0xe82 PACA_IRQ_DBELL

9
arch/powerpc/kernel/exceptions-64s.S
View file

@ -252,7 +252,7 @@ hardware_interrupt_hv:
MASKABLE_EXCEPTION_PSERIES(0x900, 0x900, decrementer)
STD_EXCEPTION_HV(0x980, 0x982, hdecrementer)
STD_EXCEPTION_PSERIES(0xa00, 0xa00, trap_0a)
MASKABLE_EXCEPTION_PSERIES(0xa00, 0xa00, doorbell_super)
KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0xa00)
STD_EXCEPTION_PSERIES(0xb00, 0xb00, trap_0b)
@ -655,7 +655,11 @@ machine_check_common:
STD_EXCEPTION_COMMON_ASYNC(0x500, hardware_interrupt, do_IRQ)
STD_EXCEPTION_COMMON_ASYNC(0x900, decrementer, .timer_interrupt)
STD_EXCEPTION_COMMON(0x980, hdecrementer, .hdec_interrupt)
STD_EXCEPTION_COMMON(0xa00, trap_0a, .unknown_exception)
#ifdef CONFIG_PPC_DOORBELL
STD_EXCEPTION_COMMON_ASYNC(0xa00, doorbell_super, .doorbell_exception)
#else
STD_EXCEPTION_COMMON_ASYNC(0xa00, doorbell_super, .unknown_exception)
#endif
STD_EXCEPTION_COMMON(0xb00, trap_0b, .unknown_exception)
STD_EXCEPTION_COMMON(0xd00, single_step, .single_step_exception)
STD_EXCEPTION_COMMON(0xe00, trap_0e, .unknown_exception)
@ -755,6 +759,7 @@ hardware_interrupt_relon_hv:
STD_RELON_EXCEPTION_PSERIES(0x4800, 0x800, fp_unavailable)
MASKABLE_RELON_EXCEPTION_PSERIES(0x4900, 0x900, decrementer)
STD_RELON_EXCEPTION_HV(0x4980, 0x982, hdecrementer)
MASKABLE_RELON_EXCEPTION_PSERIES(0x4a00, 0xa00, doorbell_super)
STD_RELON_EXCEPTION_PSERIES(0x4b00, 0xb00, trap_0b)
. = 0x4c00