diff options
Diffstat (limited to 'arch/powerpc/include/asm/exception-64s.h')
| -rw-r--r-- | arch/powerpc/include/asm/exception-64s.h | 113 |
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 8057f4f6980f..548da3aa0a30 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, |