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powerpc/64s/exception: Clean up SRR specifiers

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Remove more magic numbers and replace with nicely named bools.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-19-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2020-02-26 03:35:27 +10:00 committed by Michael Ellerman
parent 689e732262
commit 3f7fbd97d0
1 changed files with 32 additions and 36 deletions
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68
arch/powerpc/kernel/exceptions-64s.S
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@ -105,11 +105,6 @@ name:
ori reg,reg,(ABS_ADDR(label))@l; \
addis reg,reg,(ABS_ADDR(label))@h
/* Exception register prefixes */
#define EXC_HV_OR_STD 2 /* depends on HVMODE */
#define EXC_HV 1
#define EXC_STD 0
/*
* Branch to label using its 0xC000 address. This results in instruction
* address suitable for MSR[IR]=0 or 1, which allows relocation to be turned
@ -128,6 +123,7 @@ name:
*/
#define IVEC .L_IVEC_\name\()
#define IHSRR .L_IHSRR_\name\()
#define IHSRR_IF_HVMODE .L_IHSRR_IF_HVMODE_\name\()
#define IAREA .L_IAREA_\name\()
#define IVIRT .L_IVIRT_\name\()
#define IISIDE .L_IISIDE_\name\()
@ -159,7 +155,10 @@ do_define_int n
.error "IVEC not defined"
.endif
.ifndef IHSRR
IHSRR=EXC_STD
IHSRR=0
.endif
.ifndef IHSRR_IF_HVMODE
IHSRR_IF_HVMODE=0
.endif
.ifndef IAREA
IAREA=PACA_EXGEN
@ -257,7 +256,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
ld r9,IAREA+EX_R9(r13)
ld r10,IAREA+EX_R10(r13)
/* HSRR variants have the 0x2 bit added to their trap number */
.if IHSRR == EXC_HV_OR_STD
.if IHSRR_IF_HVMODE
BEGIN_FTR_SECTION
ori r12,r12,(IVEC + 0x2)
FTR_SECTION_ELSE
@ -278,7 +277,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR)
ld r10,IAREA+EX_R10(r13)
ld r11,IAREA+EX_R11(r13)
ld r12,IAREA+EX_R12(r13)
.if IHSRR == EXC_HV_OR_STD
.if IHSRR_IF_HVMODE
BEGIN_FTR_SECTION
b kvmppc_skip_Hinterrupt
FTR_SECTION_ELSE
@ -403,7 +402,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_CFAR)
stw r10,IAREA+EX_DSISR(r13)
.endif
.if IHSRR == EXC_HV_OR_STD
.if IHSRR_IF_HVMODE
BEGIN_FTR_SECTION
mfspr r11,SPRN_HSRR0 /* save HSRR0 */
mfspr r12,SPRN_HSRR1 /* and HSRR1 */
@ -499,7 +498,7 @@ DEFINE_FIXED_SYMBOL(\name\()_common_real)
.abort "Bad maskable vector"
.endif
.if IHSRR == EXC_HV_OR_STD
.if IHSRR_IF_HVMODE
BEGIN_FTR_SECTION
bne masked_Hinterrupt
FTR_SECTION_ELSE
@ -632,12 +631,9 @@ END_FTR_SECTION_IFSET(CPU_FTR_CFAR)
* Restore all registers including H/SRR0/1 saved in a stack frame of a
* standard exception.
*/
.macro EXCEPTION_RESTORE_REGS hsrr
.macro EXCEPTION_RESTORE_REGS hsrr=0
/* Move original SRR0 and SRR1 into the respective regs */
ld r9,_MSR(r1)
.if \hsrr == EXC_HV_OR_STD
.error "EXC_HV_OR_STD Not implemented for EXCEPTION_RESTORE_REGS"
.endif
.if \hsrr
mtspr SPRN_HSRR1,r9
.else
@ -912,7 +908,7 @@ EXC_COMMON_BEGIN(system_reset_common)
ld r10,SOFTE(r1)
stb r10,PACAIRQSOFTMASK(r13)
EXCEPTION_RESTORE_REGS EXC_STD
EXCEPTION_RESTORE_REGS
RFI_TO_USER_OR_KERNEL
GEN_KVM system_reset
@ -966,7 +962,7 @@ TRAMP_REAL_BEGIN(machine_check_fwnmi)
lhz r12,PACA_IN_MCE(r13); \
subi r12,r12,1; \
sth r12,PACA_IN_MCE(r13); \
EXCEPTION_RESTORE_REGS EXC_STD
EXCEPTION_RESTORE_REGS
EXC_COMMON_BEGIN(machine_check_early_common)
__GEN_REALMODE_COMMON_ENTRY machine_check_early
@ -1337,7 +1333,7 @@ ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_TYPE_RADIX)
INT_DEFINE_BEGIN(hardware_interrupt)
IVEC=0x500
IHSRR=EXC_HV_OR_STD
IHSRR_IF_HVMODE=1
IMASK=IRQS_DISABLED
IKVM_REAL=1
IKVM_VIRT=1
@ -1506,7 +1502,7 @@ EXC_COMMON_BEGIN(decrementer_common)
INT_DEFINE_BEGIN(hdecrementer)
IVEC=0x980
IHSRR=EXC_HV
IHSRR=1
ISTACK=0
IRECONCILE=0
IKVM_REAL=1
@ -1735,7 +1731,7 @@ EXC_COMMON_BEGIN(single_step_common)
INT_DEFINE_BEGIN(h_data_storage)
IVEC=0xe00
IHSRR=EXC_HV
IHSRR=1
IDAR=1
IDSISR=1
IKVM_SKIP=1
@ -1767,7 +1763,7 @@ ALT_MMU_FTR_SECTION_END_IFSET(MMU_FTR_TYPE_RADIX)
INT_DEFINE_BEGIN(h_instr_storage)
IVEC=0xe20
IHSRR=EXC_HV
IHSRR=1
IKVM_REAL=1
IKVM_VIRT=1
INT_DEFINE_END(h_instr_storage)
@ -1790,7 +1786,7 @@ EXC_COMMON_BEGIN(h_instr_storage_common)
INT_DEFINE_BEGIN(emulation_assist)
IVEC=0xe40
IHSRR=EXC_HV
IHSRR=1
IKVM_REAL=1
IKVM_VIRT=1
INT_DEFINE_END(emulation_assist)
@ -1818,7 +1814,7 @@ EXC_COMMON_BEGIN(emulation_assist_common)
*/
INT_DEFINE_BEGIN(hmi_exception_early)
IVEC=0xe60
IHSRR=EXC_HV
IHSRR=1
IREALMODE_COMMON=1
ISTACK=0
IRECONCILE=0
@ -1828,7 +1824,7 @@ INT_DEFINE_END(hmi_exception_early)
INT_DEFINE_BEGIN(hmi_exception)
IVEC=0xe60
IHSRR=EXC_HV
IHSRR=1
IMASK=IRQS_DISABLED
IKVM_REAL=1
INT_DEFINE_END(hmi_exception)
@ -1852,7 +1848,7 @@ EXC_COMMON_BEGIN(hmi_exception_early_common)
cmpdi cr0,r3,0
bne 1f
EXCEPTION_RESTORE_REGS EXC_HV
EXCEPTION_RESTORE_REGS hsrr=1
HRFI_TO_USER_OR_KERNEL
1:
@ -1860,7 +1856,7 @@ EXC_COMMON_BEGIN(hmi_exception_early_common)
* Go to virtual mode and pull the HMI event information from
* firmware.
*/
EXCEPTION_RESTORE_REGS EXC_HV
EXCEPTION_RESTORE_REGS hsrr=1
GEN_INT_ENTRY hmi_exception, virt=0
GEN_KVM hmi_exception_early
@ -1879,7 +1875,7 @@ EXC_COMMON_BEGIN(hmi_exception_common)
INT_DEFINE_BEGIN(h_doorbell)
IVEC=0xe80
IHSRR=EXC_HV
IHSRR=1
IMASK=IRQS_DISABLED
IKVM_REAL=1
IKVM_VIRT=1
@ -1908,7 +1904,7 @@ EXC_COMMON_BEGIN(h_doorbell_common)
INT_DEFINE_BEGIN(h_virt_irq)
IVEC=0xea0
IHSRR=EXC_HV
IHSRR=1
IMASK=IRQS_DISABLED
IKVM_REAL=1
IKVM_VIRT=1
@ -2078,7 +2074,7 @@ EXC_COMMON_BEGIN(facility_unavailable_common)
INT_DEFINE_BEGIN(h_facility_unavailable)
IVEC=0xf80
IHSRR=EXC_HV
IHSRR=1
IKVM_REAL=1
IKVM_VIRT=1
INT_DEFINE_END(h_facility_unavailable)
@ -2114,7 +2110,7 @@ EXC_VIRT_NONE(0x5100, 0x100)
#ifdef CONFIG_CBE_RAS
INT_DEFINE_BEGIN(cbe_system_error)
IVEC=0x1200
IHSRR=EXC_HV
IHSRR=1
IKVM_SKIP=1
IKVM_REAL=1
INT_DEFINE_END(cbe_system_error)
@ -2165,8 +2161,8 @@ EXC_VIRT_NONE(0x5400, 0x100)
INT_DEFINE_BEGIN(denorm_exception)
IVEC=0x1500
IHSRR=EXC_HV
IBRANCH_TO_COMMON=0
IHSRR=1
IBRANCH_COMMON=0
IKVM_REAL=1
INT_DEFINE_END(denorm_exception)
@ -2274,7 +2270,7 @@ EXC_COMMON_BEGIN(denorm_exception_common)
#ifdef CONFIG_CBE_RAS
INT_DEFINE_BEGIN(cbe_maintenance)
IVEC=0x1600
IHSRR=EXC_HV
IHSRR=1
IKVM_SKIP=1
IKVM_REAL=1
INT_DEFINE_END(cbe_maintenance)
@ -2326,7 +2322,7 @@ EXC_COMMON_BEGIN(altivec_assist_common)
#ifdef CONFIG_CBE_RAS
INT_DEFINE_BEGIN(cbe_thermal)
IVEC=0x1800
IHSRR=EXC_HV
IHSRR=1
IKVM_SKIP=1
IKVM_REAL=1
INT_DEFINE_END(cbe_thermal)
@ -2389,7 +2385,7 @@ EXC_COMMON_BEGIN(soft_nmi_common)
* - Else it is one of PACA_IRQ_MUST_HARD_MASK, so hard disable and return.
* This is called with r10 containing the value to OR to the paca field.
*/
.macro MASKED_INTERRUPT hsrr
.macro MASKED_INTERRUPT hsrr=0
.if \hsrr
masked_Hinterrupt:
.else
@ -2536,8 +2532,8 @@ TRAMP_REAL_BEGIN(hrfi_flush_fallback)
hrfid
USE_TEXT_SECTION()
MASKED_INTERRUPT EXC_STD
MASKED_INTERRUPT EXC_HV
MASKED_INTERRUPT
MASKED_INTERRUPT hsrr=1
#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
kvmppc_skip_interrupt: