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Diffstat (limited to 'arch/powerpc/include/asm/exception-64s.h')
-rw-r--r--arch/powerpc/include/asm/exception-64s.h113
1 files changed, 51 insertions, 62 deletions
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h
index 8057f4f..548da3a 100644
--- a/arch/powerpc/include/asm/exception-64s.h
+++ b/arch/powerpc/include/asm/exception-64s.h
@@ -232,23 +232,30 @@ label##_hv: \
EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, label##_common, \
EXC_HV, KVMTEST, vec)
-#define __SOFTEN_TEST(h) \
+/* This associate vector numbers with bits in paca->irq_happened */
+#define SOFTEN_VALUE_0x500 PACA_IRQ_EE
+#define SOFTEN_VALUE_0x502 PACA_IRQ_EE
+#define SOFTEN_VALUE_0x900 PACA_IRQ_DEC
+#define SOFTEN_VALUE_0x982 PACA_IRQ_DEC
+
+#define __SOFTEN_TEST(h, vec) \
lbz r10,PACASOFTIRQEN(r13); \
cmpwi r10,0; \
+ li r10,SOFTEN_VALUE_##vec; \
beq masked_##h##interrupt
-#define _SOFTEN_TEST(h) __SOFTEN_TEST(h)
+#define _SOFTEN_TEST(h, vec) __SOFTEN_TEST(h, vec)
#define SOFTEN_TEST_PR(vec) \
KVMTEST_PR(vec); \
- _SOFTEN_TEST(EXC_STD)
+ _SOFTEN_TEST(EXC_STD, vec)
#define SOFTEN_TEST_HV(vec) \
KVMTEST(vec); \
- _SOFTEN_TEST(EXC_HV)
+ _SOFTEN_TEST(EXC_HV, vec)
#define SOFTEN_TEST_HV_201(vec) \
KVMTEST(vec); \
- _SOFTEN_TEST(EXC_STD)
+ _SOFTEN_TEST(EXC_STD, vec)
#define __MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra) \
HMT_MEDIUM; \
@@ -272,73 +279,55 @@ label##_hv: \
_MASKABLE_EXCEPTION_PSERIES(vec, label, \
EXC_HV, SOFTEN_TEST_HV)
-#ifdef CONFIG_PPC_ISERIES
-#define DISABLE_INTS \
- li r11,0; \
- stb r11,PACASOFTIRQEN(r13); \
-BEGIN_FW_FTR_SECTION; \
- stb r11,PACAHARDIRQEN(r13); \
-END_FW_FTR_SECTION_IFCLR(FW_FEATURE_ISERIES); \
- TRACE_DISABLE_INTS; \
-BEGIN_FW_FTR_SECTION; \
- mfmsr r10; \
- ori r10,r10,MSR_EE; \
- mtmsrd r10,1; \
-END_FW_FTR_SECTION_IFSET(FW_FEATURE_ISERIES)
-#else
-#define DISABLE_INTS \
- li r11,0; \
- stb r11,PACASOFTIRQEN(r13); \
- stb r11,PACAHARDIRQEN(r13); \
- TRACE_DISABLE_INTS
-#endif /* CONFIG_PPC_ISERIES */
+/*
+ * Our exception common code can be passed various "additions"
+ * to specify the behaviour of interrupts, whether to kick the
+ * runlatch, etc...
+ */
+
+/* Exception addition: Hard disable interrupts */
+#define DISABLE_INTS SOFT_DISABLE_INTS(r10,r11)
+/* Exception addition: Keep interrupt state */
#define ENABLE_INTS \
+ ld r11,PACAKMSR(r13); \
ld r12,_MSR(r1); \
- mfmsr r11; \
rlwimi r11,r12,0,MSR_EE; \
mtmsrd r11,1
-#define STD_EXCEPTION_COMMON(trap, label, hdlr) \
- .align 7; \
- .globl label##_common; \
-label##_common: \
- EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN); \
- DISABLE_INTS; \
- bl .save_nvgprs; \
- addi r3,r1,STACK_FRAME_OVERHEAD; \
- bl hdlr; \
- b .ret_from_except
+#define ADD_NVGPRS \
+ bl .save_nvgprs
+
+#define RUNLATCH_ON \
+BEGIN_FTR_SECTION \
+ clrrdi r3,r1,THREAD_SHIFT; \
+ ld r4,TI_LOCAL_FLAGS(r3); \
+ andi. r0,r4,_TLF_RUNLATCH; \
+ beql ppc64_runlatch_on_trampoline; \
+END_FTR_SECTION_IFSET(CPU_FTR_CTRL)
+
+#define EXCEPTION_COMMON(trap, label, hdlr, ret, additions) \
+ .align 7; \
+ .globl label##_common; \
+label##_common: \
+ EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN); \
+ additions; \
+ addi r3,r1,STACK_FRAME_OVERHEAD; \
+ bl hdlr; \
+ b ret
+
+#define STD_EXCEPTION_COMMON(trap, label, hdlr) \
+ EXCEPTION_COMMON(trap, label, hdlr, ret_from_except, \
+ ADD_NVGPRS;DISABLE_INTS)
/*
* Like STD_EXCEPTION_COMMON, but for exceptions that can occur
- * in the idle task and therefore need the special idle handling.
+ * in the idle task and therefore need the special idle handling
+ * (finish nap and runlatch)
*/
-#define STD_EXCEPTION_COMMON_IDLE(trap, label, hdlr) \
- .align 7; \
- .globl label##_common; \
-label##_common: \
- EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN); \
- FINISH_NAP; \
- DISABLE_INTS; \
- bl .save_nvgprs; \
- addi r3,r1,STACK_FRAME_OVERHEAD; \
- bl hdlr; \
- b .ret_from_except
-
-#define STD_EXCEPTION_COMMON_LITE(trap, label, hdlr) \
- .align 7; \
- .globl label##_common; \
-label##_common: \
- EXCEPTION_PROLOG_COMMON(trap, PACA_EXGEN); \
- FINISH_NAP; \
- DISABLE_INTS; \
-BEGIN_FTR_SECTION \
- bl .ppc64_runlatch_on; \
-END_FTR_SECTION_IFSET(CPU_FTR_CTRL) \
- addi r3,r1,STACK_FRAME_OVERHEAD; \
- bl hdlr; \
- b .ret_from_except_lite
+#define STD_EXCEPTION_COMMON_ASYNC(trap, label, hdlr) \
+ EXCEPTION_COMMON(trap, label, hdlr, ret_from_except_lite, \
+ FINISH_NAP;RUNLATCH_ON;DISABLE_INTS)
/*
* When the idle code in power4_idle puts the CPU into NAP mode,
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