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powerpc/64s: Consolidate Hypervisor Maintenance 0xe60 interrupt 

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nicholas Piggin 2016-09-21 17:43:49 +10:00 committed by Michael Ellerman
parent 031b4026a8
commit 62f9b03b06
1 changed files with 56 additions and 57 deletions
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113
arch/powerpc/kernel/exceptions-64s.S
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@ -945,6 +945,62 @@ EXC_COMMON(emulation_assist_common, 0xe40, emulation_assist_interrupt)
__EXC_REAL_OOL_HV_DIRECT(hmi_exception, 0xe60, 0xe80, hmi_exception_early)
__TRAMP_REAL_REAL_OOL_MASKABLE_HV(hmi_exception, 0xe60)
EXC_VIRT_BEGIN(unused, 0x4e60, 0x4e80)
b . /* Can't happen, see v2.07 Book III-S section 6.5 */
EXC_VIRT_END(unused, 0x4e60, 0x4e80)
TRAMP_KVM_HV(PACA_EXGEN, 0xe60)
TRAMP_REAL_BEGIN(hmi_exception_early)
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, 0xe60)
mr r10,r1 /* Save r1 */
ld r1,PACAEMERGSP(r13) /* Use emergency stack */
subi r1,r1,INT_FRAME_SIZE /* alloc stack frame */
std r9,_CCR(r1) /* save CR in stackframe */
mfspr r11,SPRN_HSRR0 /* Save HSRR0 */
std r11,_NIP(r1) /* save HSRR0 in stackframe */
mfspr r12,SPRN_HSRR1 /* Save SRR1 */
std r12,_MSR(r1) /* save SRR1 in stackframe */
std r10,0(r1) /* make stack chain pointer */
std r0,GPR0(r1) /* save r0 in stackframe */
std r10,GPR1(r1) /* save r1 in stackframe */
EXCEPTION_PROLOG_COMMON_2(PACA_EXGEN)
EXCEPTION_PROLOG_COMMON_3(0xe60)
addi r3,r1,STACK_FRAME_OVERHEAD
bl hmi_exception_realmode
/* Windup the stack. */
/* Move original HSRR0 and HSRR1 into the respective regs */
ld r9,_MSR(r1)
mtspr SPRN_HSRR1,r9
ld r3,_NIP(r1)
mtspr SPRN_HSRR0,r3
ld r9,_CTR(r1)
mtctr r9
ld r9,_XER(r1)
mtxer r9
ld r9,_LINK(r1)
mtlr r9
REST_GPR(0, r1)
REST_8GPRS(2, r1)
REST_GPR(10, r1)
ld r11,_CCR(r1)
mtcr r11
REST_GPR(11, r1)
REST_2GPRS(12, r1)
/* restore original r1. */
ld r1,GPR1(r1)
/*
* Go to virtual mode and pull the HMI event information from
* firmware.
*/
.globl hmi_exception_after_realmode
hmi_exception_after_realmode:
SET_SCRATCH0(r13)
EXCEPTION_PROLOG_0(PACA_EXGEN)
b tramp_real_hmi_exception
EXC_COMMON_ASYNC(hmi_exception_common, 0xe60, handle_hmi_exception)
__EXC_REAL_OOL_MASKABLE_HV(h_doorbell, 0xe80, 0xea0)
@ -1088,9 +1144,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_CFAR)
#endif
/* moved from 0xe00 */
__TRAMP_REAL_REAL_OOL_MASKABLE_HV(hmi_exception, 0xe60)
TRAMP_KVM_HV(PACA_EXGEN, 0xe60)
__TRAMP_REAL_REAL_OOL_MASKABLE_HV(h_doorbell, 0xe80)
TRAMP_KVM_HV(PACA_EXGEN, 0xe80)
@ -1233,7 +1286,6 @@ TRAMP_REAL_BEGIN(kvmppc_skip_Hinterrupt)
/*** Common interrupt handlers ***/
EXC_COMMON_ASYNC(hmi_exception_common, 0xe60, handle_hmi_exception)
#ifdef CONFIG_PPC_DOORBELL
EXC_COMMON_ASYNC(h_doorbell_common, 0xe80, doorbell_exception)
#else
@ -1265,10 +1317,6 @@ EXC_COMMON(altivec_assist_common, 0x1700, unknown_exception)
* come here.
*/
EXC_VIRT_BEGIN(unused, 0x4e60, 0x4e80)
b . /* Can't happen, see v2.07 Book III-S section 6.5 */
EXC_VIRT_END(unused, 0x4e60, 0x4e80)
__EXC_VIRT_OOL_MASKABLE_HV(h_doorbell, 0x4e80, 0x4ea0)
__EXC_VIRT_OOL_MASKABLE_HV(h_virt_irq, 0x4ea0, 0x4ec0)
@ -1405,55 +1453,6 @@ EXC_COMMON(cbe_thermal_common, 0x1800, cbe_thermal_exception)
#endif /* CONFIG_CBE_RAS */
TRAMP_REAL_BEGIN(hmi_exception_early)
EXCEPTION_PROLOG_1(PACA_EXGEN, KVMTEST_HV, 0xe60)
mr r10,r1 /* Save r1 */
ld r1,PACAEMERGSP(r13) /* Use emergency stack */
subi r1,r1,INT_FRAME_SIZE /* alloc stack frame */
std r9,_CCR(r1) /* save CR in stackframe */
mfspr r11,SPRN_HSRR0 /* Save HSRR0 */
std r11,_NIP(r1) /* save HSRR0 in stackframe */
mfspr r12,SPRN_HSRR1 /* Save SRR1 */
std r12,_MSR(r1) /* save SRR1 in stackframe */
std r10,0(r1) /* make stack chain pointer */
std r0,GPR0(r1) /* save r0 in stackframe */
std r10,GPR1(r1) /* save r1 in stackframe */
EXCEPTION_PROLOG_COMMON_2(PACA_EXGEN)
EXCEPTION_PROLOG_COMMON_3(0xe60)
addi r3,r1,STACK_FRAME_OVERHEAD
bl hmi_exception_realmode
/* Windup the stack. */
/* Move original HSRR0 and HSRR1 into the respective regs */
ld r9,_MSR(r1)
mtspr SPRN_HSRR1,r9
ld r3,_NIP(r1)
mtspr SPRN_HSRR0,r3
ld r9,_CTR(r1)
mtctr r9
ld r9,_XER(r1)
mtxer r9
ld r9,_LINK(r1)
mtlr r9
REST_GPR(0, r1)
REST_8GPRS(2, r1)
REST_GPR(10, r1)
ld r11,_CCR(r1)
mtcr r11
REST_GPR(11, r1)
REST_2GPRS(12, r1)
/* restore original r1. */
ld r1,GPR1(r1)
/*
* Go to virtual mode and pull the HMI event information from
* firmware.
*/
.globl hmi_exception_after_realmode
hmi_exception_after_realmode:
SET_SCRATCH0(r13)
EXCEPTION_PROLOG_0(PACA_EXGEN)
b tramp_real_hmi_exception
#ifdef CONFIG_PPC_970_NAP
TRAMP_REAL_BEGIN(power4_fixup_nap)
andc r9,r9,r10