[PATCH v10 12/17] powerpc/64s: Add support to take additional parameter in MASKABLE_* macro
Madhavan Srinivasan
maddy at linux.vnet.ibm.com
Wed Dec 20 14:55:52 AEDT 2017
To support addition of "bitmask" to MASKABLE_* macros, factor out the
EXCPETION_PROLOG_1 macro.
Make it explicit the interrupt masking supported by a gievn interrupt
handler. Patch correspondingly extends the MASKABLE_* macros with an
addition's parameter. "bitmask" parameter is passed to SOFTEN_TEST
macro to decide on masking the interrupt.
Signed-off-by: Madhavan Srinivasan <maddy at linux.vnet.ibm.com>
---
arch/powerpc/include/asm/exception-64s.h | 92 ++++++++++++++++++++------------
arch/powerpc/include/asm/head-64.h | 40 +++++++-------
arch/powerpc/kernel/exceptions-64s.S | 32 ++++++-----
3 files changed, 96 insertions(+), 68 deletions(-)
diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h
index b6dc05c944c5..d005a1c19b68 100644
--- a/arch/powerpc/include/asm/exception-64s.h
+++ b/arch/powerpc/include/asm/exception-64s.h
@@ -198,18 +198,40 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
std r10,area+EX_R10(r13); /* save r10 - r12 */ \
OPT_GET_SPR(r10, SPRN_CFAR, CPU_FTR_CFAR)
-#define __EXCEPTION_PROLOG_1(area, extra, vec) \
+#define __EXCEPTION_PROLOG_1_PRE(area) \
OPT_SAVE_REG_TO_PACA(area+EX_PPR, r9, CPU_FTR_HAS_PPR); \
OPT_SAVE_REG_TO_PACA(area+EX_CFAR, r10, CPU_FTR_CFAR); \
SAVE_CTR(r10, area); \
- mfcr r9; \
- extra(vec); \
+ mfcr r9;
+
+#define __EXCEPTION_PROLOG_1_POST(area) \
std r11,area+EX_R11(r13); \
std r12,area+EX_R12(r13); \
GET_SCRATCH0(r10); \
std r10,area+EX_R13(r13)
+
+/*
+ * This version of the EXCEPTION_PROLOG_1 will carry
+ * addition parameter called "bitmask" to support
+ * checking of the interrupt maskable level in the SOFTEN_TEST.
+ * Intended to be used in MASKABLE_EXCPETION_* macros.
+ */
+#define MASKABLE_EXCEPTION_PROLOG_1(area, extra, vec, bitmask) \
+ __EXCEPTION_PROLOG_1_PRE(area); \
+ extra(vec, bitmask); \
+ __EXCEPTION_PROLOG_1_POST(area);
+
+/*
+ * This version of the EXCEPTION_PROLOG_1 is intended
+ * to be used in STD_EXCEPTION* macros
+ */
+#define _EXCEPTION_PROLOG_1(area, extra, vec) \
+ __EXCEPTION_PROLOG_1_PRE(area); \
+ extra(vec); \
+ __EXCEPTION_PROLOG_1_POST(area);
+
#define EXCEPTION_PROLOG_1(area, extra, vec) \
- __EXCEPTION_PROLOG_1(area, extra, vec)
+ _EXCEPTION_PROLOG_1(area, extra, vec)
#define __EXCEPTION_PROLOG_PSERIES_1(label, h) \
ld r10,PACAKMSR(r13); /* get MSR value for kernel */ \
@@ -497,21 +519,21 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define SOFTEN_VALUE_0xe60 PACA_IRQ_HMI
#define SOFTEN_VALUE_0xea0 PACA_IRQ_EE
-#define __SOFTEN_TEST(h, vec) \
+#define __SOFTEN_TEST(h, vec, bitmask) \
lbz r10,PACAIRQSOFTMASK(r13); \
- andi. r10,r10,IRQ_SOFT_MASK_STD; \
+ andi. r10,r10,bitmask; \
li r10,SOFTEN_VALUE_##vec; \
bne masked_##h##interrupt
-#define _SOFTEN_TEST(h, vec) __SOFTEN_TEST(h, vec)
+#define _SOFTEN_TEST(h, vec, bitmask) __SOFTEN_TEST(h, vec, bitmask)
-#define SOFTEN_TEST_PR(vec) \
+#define SOFTEN_TEST_PR(vec, bitmask) \
KVMTEST(EXC_STD, vec); \
- _SOFTEN_TEST(EXC_STD, vec)
+ _SOFTEN_TEST(EXC_STD, vec, bitmask)
-#define SOFTEN_TEST_HV(vec) \
+#define SOFTEN_TEST_HV(vec, bitmask) \
KVMTEST(EXC_HV, vec); \
- _SOFTEN_TEST(EXC_HV, vec)
+ _SOFTEN_TEST(EXC_HV, vec, bitmask)
#define KVMTEST_PR(vec) \
KVMTEST(EXC_STD, vec)
@@ -519,53 +541,53 @@ END_FTR_SECTION_NESTED(ftr,ftr,943)
#define KVMTEST_HV(vec) \
KVMTEST(EXC_HV, vec)
-#define SOFTEN_NOTEST_PR(vec) _SOFTEN_TEST(EXC_STD, vec)
-#define SOFTEN_NOTEST_HV(vec) _SOFTEN_TEST(EXC_HV, vec)
+#define SOFTEN_NOTEST_PR(vec, bitmask) _SOFTEN_TEST(EXC_STD, vec, bitmask)
+#define SOFTEN_NOTEST_HV(vec, bitmask) _SOFTEN_TEST(EXC_HV, vec, bitmask)
-#define __MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra) \
+#define __MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra, bitmask) \
SET_SCRATCH0(r13); /* save r13 */ \
EXCEPTION_PROLOG_0(PACA_EXGEN); \
- __EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec); \
+ MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec, bitmask); \
EXCEPTION_PROLOG_PSERIES_1(label, h);
-#define _MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra) \
- __MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra)
+#define _MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra, bitmask) \
+ __MASKABLE_EXCEPTION_PSERIES(vec, label, h, extra, bitmask)
-#define MASKABLE_EXCEPTION_PSERIES(loc, vec, label) \
+#define MASKABLE_EXCEPTION_PSERIES(loc, vec, label, bitmask) \
_MASKABLE_EXCEPTION_PSERIES(vec, label, \
- EXC_STD, SOFTEN_TEST_PR)
+ EXC_STD, SOFTEN_TEST_PR, bitmask)
-#define MASKABLE_EXCEPTION_PSERIES_OOL(vec, label) \
- __EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_PR, vec); \
+#define MASKABLE_EXCEPTION_PSERIES_OOL(vec, label, bitmask) \
+ MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_PR, vec, bitmask);\
EXCEPTION_PROLOG_PSERIES_1(label, EXC_STD)
-#define MASKABLE_EXCEPTION_HV(loc, vec, label) \
+#define MASKABLE_EXCEPTION_HV(loc, vec, label, bitmask) \
_MASKABLE_EXCEPTION_PSERIES(vec, label, \
- EXC_HV, SOFTEN_TEST_HV)
+ EXC_HV, SOFTEN_TEST_HV, bitmask)
-#define MASKABLE_EXCEPTION_HV_OOL(vec, label) \
- __EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_HV, vec); \
+#define MASKABLE_EXCEPTION_HV_OOL(vec, label, bitmask) \
+ MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_HV, vec, bitmask);\
EXCEPTION_PROLOG_PSERIES_1(label, EXC_HV)
-#define __MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra) \
+#define __MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra, bitmask) \
SET_SCRATCH0(r13); /* save r13 */ \
EXCEPTION_PROLOG_0(PACA_EXGEN); \
- __EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec); \
+ MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, extra, vec, bitmask); \
EXCEPTION_RELON_PROLOG_PSERIES_1(label, h)
-#define _MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra) \
- __MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra)
+#define _MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra, bitmask)\
+ __MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, h, extra, bitmask)
-#define MASKABLE_RELON_EXCEPTION_PSERIES(loc, vec, label) \
+#define MASKABLE_RELON_EXCEPTION_PSERIES(loc, vec, label, bitmask) \
_MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, \
- EXC_STD, SOFTEN_NOTEST_PR)
+ EXC_STD, SOFTEN_NOTEST_PR, bitmask)
-#define MASKABLE_RELON_EXCEPTION_HV(loc, vec, label) \
+#define MASKABLE_RELON_EXCEPTION_HV(loc, vec, label, bitmask) \
_MASKABLE_RELON_EXCEPTION_PSERIES(vec, label, \
- EXC_HV, SOFTEN_TEST_HV)
+ EXC_HV, SOFTEN_TEST_HV, bitmask)
-#define MASKABLE_RELON_EXCEPTION_HV_OOL(vec, label) \
- __EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_TEST_HV, vec); \
+#define MASKABLE_RELON_EXCEPTION_HV_OOL(vec, label, bitmask) \
+ MASKABLE_EXCEPTION_PROLOG_1(PACA_EXGEN, SOFTEN_NOTEST_HV, vec, bitmask);\
EXCEPTION_RELON_PROLOG_PSERIES_1(label, EXC_HV)
/*
diff --git a/arch/powerpc/include/asm/head-64.h b/arch/powerpc/include/asm/head-64.h
index fdcff76e9a25..2bbf9b6877dc 100644
--- a/arch/powerpc/include/asm/head-64.h
+++ b/arch/powerpc/include/asm/head-64.h
@@ -269,14 +269,14 @@ end_##sname:
STD_RELON_EXCEPTION_PSERIES(start, realvec, name##_common); \
EXC_VIRT_END(name, start, size);
-#define EXC_REAL_MASKABLE(name, start, size) \
+#define EXC_REAL_MASKABLE(name, start, size, bitmask) \
EXC_REAL_BEGIN(name, start, size); \
- MASKABLE_EXCEPTION_PSERIES(start, start, name##_common); \
+ MASKABLE_EXCEPTION_PSERIES(start, start, name##_common, bitmask);\
EXC_REAL_END(name, start, size);
-#define EXC_VIRT_MASKABLE(name, start, size, realvec) \
+#define EXC_VIRT_MASKABLE(name, start, size, realvec, bitmask) \
EXC_VIRT_BEGIN(name, start, size); \
- MASKABLE_RELON_EXCEPTION_PSERIES(start, realvec, name##_common); \
+ MASKABLE_RELON_EXCEPTION_PSERIES(start, realvec, name##_common, bitmask);\
EXC_VIRT_END(name, start, size);
#define EXC_REAL_HV(name, start, size) \
@@ -305,13 +305,13 @@ end_##sname:
#define __EXC_REAL_OOL_MASKABLE(name, start, size) \
__EXC_REAL_OOL(name, start, size);
-#define __TRAMP_REAL_OOL_MASKABLE(name, vec) \
+#define __TRAMP_REAL_OOL_MASKABLE(name, vec, bitmask) \
TRAMP_REAL_BEGIN(tramp_real_##name); \
- MASKABLE_EXCEPTION_PSERIES_OOL(vec, name##_common); \
+ MASKABLE_EXCEPTION_PSERIES_OOL(vec, name##_common, bitmask); \
-#define EXC_REAL_OOL_MASKABLE(name, start, size) \
+#define EXC_REAL_OOL_MASKABLE(name, start, size, bitmask) \
__EXC_REAL_OOL_MASKABLE(name, start, size); \
- __TRAMP_REAL_OOL_MASKABLE(name, start);
+ __TRAMP_REAL_OOL_MASKABLE(name, start, bitmask);
#define __EXC_REAL_OOL_HV_DIRECT(name, start, size, handler) \
EXC_REAL_BEGIN(name, start, size); \
@@ -332,13 +332,13 @@ end_##sname:
#define __EXC_REAL_OOL_MASKABLE_HV(name, start, size) \
__EXC_REAL_OOL(name, start, size);
-#define __TRAMP_REAL_OOL_MASKABLE_HV(name, vec) \
+#define __TRAMP_REAL_OOL_MASKABLE_HV(name, vec, bitmask) \
TRAMP_REAL_BEGIN(tramp_real_##name); \
- MASKABLE_EXCEPTION_HV_OOL(vec, name##_common); \
+ MASKABLE_EXCEPTION_HV_OOL(vec, name##_common, bitmask); \
-#define EXC_REAL_OOL_MASKABLE_HV(name, start, size) \
+#define EXC_REAL_OOL_MASKABLE_HV(name, start, size, bitmask) \
__EXC_REAL_OOL_MASKABLE_HV(name, start, size); \
- __TRAMP_REAL_OOL_MASKABLE_HV(name, start);
+ __TRAMP_REAL_OOL_MASKABLE_HV(name, start, bitmask);
#define __EXC_VIRT_OOL(name, start, size) \
EXC_VIRT_BEGIN(name, start, size); \
@@ -356,13 +356,13 @@ end_##sname:
#define __EXC_VIRT_OOL_MASKABLE(name, start, size) \
__EXC_VIRT_OOL(name, start, size);
-#define __TRAMP_VIRT_OOL_MASKABLE(name, realvec) \
+#define __TRAMP_VIRT_OOL_MASKABLE(name, realvec, bitmask) \
TRAMP_VIRT_BEGIN(tramp_virt_##name); \
- MASKABLE_RELON_EXCEPTION_PSERIES_OOL(realvec, name##_common); \
+ MASKABLE_RELON_EXCEPTION_PSERIES_OOL(realvec, name##_common, bitmask);\
-#define EXC_VIRT_OOL_MASKABLE(name, start, size, realvec) \
+#define EXC_VIRT_OOL_MASKABLE(name, start, size, realvec, bitmask) \
__EXC_VIRT_OOL_MASKABLE(name, start, size); \
- __TRAMP_VIRT_OOL_MASKABLE(name, realvec);
+ __TRAMP_VIRT_OOL_MASKABLE(name, realvec, bitmask);
#define __EXC_VIRT_OOL_HV(name, start, size) \
__EXC_VIRT_OOL(name, start, size);
@@ -378,13 +378,13 @@ end_##sname:
#define __EXC_VIRT_OOL_MASKABLE_HV(name, start, size) \
__EXC_VIRT_OOL(name, start, size);
-#define __TRAMP_VIRT_OOL_MASKABLE_HV(name, realvec) \
+#define __TRAMP_VIRT_OOL_MASKABLE_HV(name, realvec, bitmask) \
TRAMP_VIRT_BEGIN(tramp_virt_##name); \
- MASKABLE_RELON_EXCEPTION_HV_OOL(realvec, name##_common); \
+ MASKABLE_RELON_EXCEPTION_HV_OOL(realvec, name##_common, bitmask);\
-#define EXC_VIRT_OOL_MASKABLE_HV(name, start, size, realvec) \
+#define EXC_VIRT_OOL_MASKABLE_HV(name, start, size, realvec, bitmask) \
__EXC_VIRT_OOL_MASKABLE_HV(name, start, size); \
- __TRAMP_VIRT_OOL_MASKABLE_HV(name, realvec);
+ __TRAMP_VIRT_OOL_MASKABLE_HV(name, realvec, bitmask);
#define TRAMP_KVM(area, n) \
TRAMP_KVM_BEGIN(do_kvm_##n); \
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index e441b469dc8f..52027e800bb6 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -691,10 +691,12 @@ EXC_REAL_BEGIN(hardware_interrupt, 0x500, 0x100)
hardware_interrupt_hv:
BEGIN_FTR_SECTION
_MASKABLE_EXCEPTION_PSERIES(0x500, hardware_interrupt_common,
- EXC_HV, SOFTEN_TEST_HV)
+ EXC_HV, SOFTEN_TEST_HV,
+ IRQ_SOFT_MASK_STD)
FTR_SECTION_ELSE
_MASKABLE_EXCEPTION_PSERIES(0x500, hardware_interrupt_common,
- EXC_STD, SOFTEN_TEST_PR)
+ EXC_STD, SOFTEN_TEST_PR,
+ IRQ_SOFT_MASK_STD)
ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE | CPU_FTR_ARCH_206)
EXC_REAL_END(hardware_interrupt, 0x500, 0x100)
@@ -702,9 +704,13 @@ EXC_VIRT_BEGIN(hardware_interrupt, 0x4500, 0x100)
.globl hardware_interrupt_relon_hv;
hardware_interrupt_relon_hv:
BEGIN_FTR_SECTION
- _MASKABLE_RELON_EXCEPTION_PSERIES(0x500, hardware_interrupt_common, EXC_HV, SOFTEN_TEST_HV)
+ _MASKABLE_RELON_EXCEPTION_PSERIES(0x500, hardware_interrupt_common,
+ EXC_HV, SOFTEN_TEST_HV,
+ IRQ_SOFT_MASK_STD)
FTR_SECTION_ELSE
- _MASKABLE_RELON_EXCEPTION_PSERIES(0x500, hardware_interrupt_common, EXC_STD, SOFTEN_TEST_PR)
+ _MASKABLE_RELON_EXCEPTION_PSERIES(0x500, hardware_interrupt_common,
+ EXC_STD, SOFTEN_TEST_PR,
+ IRQ_SOFT_MASK_STD)
ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE)
EXC_VIRT_END(hardware_interrupt, 0x4500, 0x100)
@@ -800,8 +806,8 @@ END_FTR_SECTION_IFSET(CPU_FTR_TM)
#endif
-EXC_REAL_MASKABLE(decrementer, 0x900, 0x80)
-EXC_VIRT_MASKABLE(decrementer, 0x4900, 0x80, 0x900)
+EXC_REAL_MASKABLE(decrementer, 0x900, 0x80, IRQ_SOFT_MASK_STD)
+EXC_VIRT_MASKABLE(decrementer, 0x4900, 0x80, 0x900, IRQ_SOFT_MASK_STD)
TRAMP_KVM(PACA_EXGEN, 0x900)
EXC_COMMON_ASYNC(decrementer_common, 0x900, timer_interrupt)
@@ -812,8 +818,8 @@ TRAMP_KVM_HV(PACA_EXGEN, 0x980)
EXC_COMMON(hdecrementer_common, 0x980, hdec_interrupt)
-EXC_REAL_MASKABLE(doorbell_super, 0xa00, 0x100)
-EXC_VIRT_MASKABLE(doorbell_super, 0x4a00, 0x100, 0xa00)
+EXC_REAL_MASKABLE(doorbell_super, 0xa00, 0x100, IRQ_SOFT_MASK_STD)
+EXC_VIRT_MASKABLE(doorbell_super, 0x4a00, 0x100, 0xa00, IRQ_SOFT_MASK_STD)
TRAMP_KVM(PACA_EXGEN, 0xa00)
#ifdef CONFIG_PPC_DOORBELL
EXC_COMMON_ASYNC(doorbell_super_common, 0xa00, doorbell_exception)
@@ -1025,7 +1031,7 @@ EXC_COMMON(emulation_assist_common, 0xe40, emulation_assist_interrupt)
* mode.
*/
__EXC_REAL_OOL_HV_DIRECT(hmi_exception, 0xe60, 0x20, hmi_exception_early)
-__TRAMP_REAL_OOL_MASKABLE_HV(hmi_exception, 0xe60)
+__TRAMP_REAL_OOL_MASKABLE_HV(hmi_exception, 0xe60, IRQ_SOFT_MASK_STD)
EXC_VIRT_NONE(0x4e60, 0x20)
TRAMP_KVM_HV(PACA_EXGEN, 0xe60)
TRAMP_REAL_BEGIN(hmi_exception_early)
@@ -1083,8 +1089,8 @@ EXC_COMMON_BEGIN(hmi_exception_common)
EXCEPTION_COMMON(PACA_EXGEN, 0xe60, hmi_exception_common, handle_hmi_exception,
ret_from_except, FINISH_NAP;ADD_NVGPRS;ADD_RECONCILE;RUNLATCH_ON)
-EXC_REAL_OOL_MASKABLE_HV(h_doorbell, 0xe80, 0x20)
-EXC_VIRT_OOL_MASKABLE_HV(h_doorbell, 0x4e80, 0x20, 0xe80)
+EXC_REAL_OOL_MASKABLE_HV(h_doorbell, 0xe80, 0x20, IRQ_SOFT_MASK_STD)
+EXC_VIRT_OOL_MASKABLE_HV(h_doorbell, 0x4e80, 0x20, 0xe80, IRQ_SOFT_MASK_STD)
TRAMP_KVM_HV(PACA_EXGEN, 0xe80)
#ifdef CONFIG_PPC_DOORBELL
EXC_COMMON_ASYNC(h_doorbell_common, 0xe80, doorbell_exception)
@@ -1093,8 +1099,8 @@ EXC_COMMON_ASYNC(h_doorbell_common, 0xe80, unknown_exception)
#endif
-EXC_REAL_OOL_MASKABLE_HV(h_virt_irq, 0xea0, 0x20)
-EXC_VIRT_OOL_MASKABLE_HV(h_virt_irq, 0x4ea0, 0x20, 0xea0)
+EXC_REAL_OOL_MASKABLE_HV(h_virt_irq, 0xea0, 0x20, IRQ_SOFT_MASK_STD)
+EXC_VIRT_OOL_MASKABLE_HV(h_virt_irq, 0x4ea0, 0x20, 0xea0, IRQ_SOFT_MASK_STD)
TRAMP_KVM_HV(PACA_EXGEN, 0xea0)
EXC_COMMON_ASYNC(h_virt_irq_common, 0xea0, do_IRQ)
--
2.7.4
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