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| Started by | Paul Mackerras <paulus@ozlabs.org> |
|---|---|
| First post | 2016-03-17 11:00 +0100 |
| Last post | 2016-03-17 11:00 +0100 |
| Articles | 1 — 1 participant |
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Re: [PATCH 1/3] powerpc/powernv: Move CHECK_HMI_INTERRUPT to exception-64s header Paul Mackerras <paulus@ozlabs.org> - 2016-03-17 11:00 +0100
| From | Paul Mackerras <paulus@ozlabs.org> |
|---|---|
| Date | 2016-03-17 11:00 +0100 |
| Subject | Re: [PATCH 1/3] powerpc/powernv: Move CHECK_HMI_INTERRUPT to exception-64s header |
| Message-ID | <rdCSL-5Ht-27@gated-at.bofh.it> |
On Mon, Feb 29, 2016 at 05:52:58PM +0530, Shreyas B. Prabhu wrote: > CHECK_HMI_INTERRUPT is used to check for HMI's in reset vector. Move > the macro to a common location (exception-64s.h) > This patch does not change any functionality. Comments below... > diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h > index 93ae809fe5ea..0082290314eb 100644 > --- a/arch/powerpc/include/asm/exception-64s.h > +++ b/arch/powerpc/include/asm/exception-64s.h > @@ -254,6 +254,25 @@ do_kvm_##n: \ > #define KVM_HANDLER_SKIP(area, h, n) > #endif > > +#define CHECK_HMI_INTERRUPT \ > + mfspr r0,SPRN_SRR1; \ > +BEGIN_FTR_SECTION_NESTED(66); \ > + rlwinm r0,r0,45-31,0xf; /* extract wake reason field (P8) */ \ > +FTR_SECTION_ELSE_NESTED(66); \ > + rlwinm r0,r0,45-31,0xe; /* P7 wake reason field is 3 bits */ \ > +ALT_FTR_SECTION_END_NESTED_IFSET(CPU_FTR_ARCH_207S, 66); \ > + cmpwi r0,0xa; /* Hypervisor maintenance ? */ \ > + bne 20f; \ > + /* Invoke opal call to handle hmi */ \ > + ld r2,PACATOC(r13); \ > + ld r1,PACAR1(r13); \ > + std r3,ORIG_GPR3(r1); /* Save original r3 */ \ > + li r0,OPAL_HANDLE_HMI; /* Pass opal token argument*/ \ > + bl opal_call_realmode; \ > + ld r3,ORIG_GPR3(r1); /* Restore original r3 */ \ > +20: nop; > + > + > #define NOTEST(n) I'd rather keep NOTEST together with the definitions of KVMTEST etc. I suggest you add this block at the end of exceptions-64s.h (just before the final #endif). Paul.
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