powerpc: Base support for exceptions using HSRR0/1
Pass the register type to the prolog, also provides alternate "HV"
version of hardware interrupt (0x500) and adjust LPES accordingly
We tag those interrupts by setting bit 0x2 in the trap number
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 6784bf7..17f1d66 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -44,7 +44,7 @@
HMT_MEDIUM
DO_KVM 0x200
mtspr SPRN_SPRG_SCRATCH0,r13 /* save r13 */
- EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common)
+ EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common, EXC_STD)
. = 0x300
.globl data_access_pSeries
@@ -71,9 +71,9 @@
std r10,PACA_EXGEN+EX_R10(r13)
std r11,PACA_EXGEN+EX_R9(r13)
std r12,PACA_EXGEN+EX_R13(r13)
- EXCEPTION_PROLOG_PSERIES_1(data_access_common)
+ EXCEPTION_PROLOG_PSERIES_1(data_access_common, EXC_STD)
FTR_SECTION_ELSE
- EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, data_access_common)
+ EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, data_access_common, EXC_STD)
ALT_FTR_SECTION_END_IFCLR(CPU_FTR_SLB)
. = 0x380
@@ -147,11 +147,24 @@
bctr
#endif
- MASKABLE_EXCEPTION_PSERIES(0x500, hardware_interrupt)
+ . = 0x500;
+ .globl hardware_interrupt_pSeries
+hardware_interrupt_pSeries:
+ BEGIN_FTR_SECTION
+ MASKABLE_EXCEPTION_PSERIES(0x500, hardware_interrupt, EXC_STD)
+ FTR_SECTION_ELSE
+ MASKABLE_EXCEPTION_PSERIES(0x502, hardware_interrupt, EXC_HV)
+ ALT_FTR_SECTION_END_IFCLR(CPU_FTR_HVMODE_206)
+
STD_EXCEPTION_PSERIES(0x600, alignment)
STD_EXCEPTION_PSERIES(0x700, program_check)
STD_EXCEPTION_PSERIES(0x800, fp_unavailable)
- MASKABLE_EXCEPTION_PSERIES(0x900, decrementer)
+
+ . = 0x900;
+ .globl decrementer_pSeries
+decrementer_pSeries:
+ MASKABLE_EXCEPTION_PSERIES(0x900, decrementer, EXC_STD)
+
STD_EXCEPTION_PSERIES(0xa00, trap_0a)
STD_EXCEPTION_PSERIES(0xb00, trap_0b)
@@ -207,15 +220,15 @@
b vsx_unavailable_pSeries
#ifdef CONFIG_CBE_RAS
- HSTD_EXCEPTION_PSERIES(0x1200, cbe_system_error)
+ HSTD_EXCEPTION_PSERIES(0x1202, cbe_system_error)
#endif /* CONFIG_CBE_RAS */
STD_EXCEPTION_PSERIES(0x1300, instruction_breakpoint)
#ifdef CONFIG_CBE_RAS
- HSTD_EXCEPTION_PSERIES(0x1600, cbe_maintenance)
+ HSTD_EXCEPTION_PSERIES(0x1602, cbe_maintenance)
#endif /* CONFIG_CBE_RAS */
STD_EXCEPTION_PSERIES(0x1700, altivec_assist)
#ifdef CONFIG_CBE_RAS
- HSTD_EXCEPTION_PSERIES(0x1800, cbe_thermal)
+ HSTD_EXCEPTION_PSERIES(0x1802, cbe_thermal)
#endif /* CONFIG_CBE_RAS */
. = 0x3000
@@ -244,13 +257,26 @@
rfid
b .
+masked_Hinterrupt:
+ stb r10,PACAHARDIRQEN(r13)
+ mtcrf 0x80,r9
+ ld r9,PACA_EXGEN+EX_R9(r13)
+ mfspr r10,SPRN_HSRR1
+ rldicl r10,r10,48,1 /* clear MSR_EE */
+ rotldi r10,r10,16
+ mtspr SPRN_HSRR1,r10
+ ld r10,PACA_EXGEN+EX_R10(r13)
+ mfspr r13,SPRN_SPRG_HSCRATCH0
+ hrfid
+ b .
+
.align 7
do_stab_bolted_pSeries:
std r11,PACA_EXSLB+EX_R11(r13)
std r12,PACA_EXSLB+EX_R12(r13)
mfspr r10,SPRN_SPRG_SCRATCH0
std r10,PACA_EXSLB+EX_R13(r13)
- EXCEPTION_PROLOG_PSERIES_1(.do_stab_bolted)
+ EXCEPTION_PROLOG_PSERIES_1(.do_stab_bolted, EXC_STD)
#ifdef CONFIG_PPC_PSERIES
/*
@@ -261,14 +287,14 @@
system_reset_fwnmi:
HMT_MEDIUM
mtspr SPRN_SPRG_SCRATCH0,r13 /* save r13 */
- EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common)
+ EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, system_reset_common, EXC_STD)
.globl machine_check_fwnmi
.align 7
machine_check_fwnmi:
HMT_MEDIUM
mtspr SPRN_SPRG_SCRATCH0,r13 /* save r13 */
- EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common)
+ EXCEPTION_PROLOG_PSERIES(PACA_EXMC, machine_check_common, EXC_STD)
#endif /* CONFIG_PPC_PSERIES */