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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-09-26 16:18:45 +1000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-10-25 23:25:47 +0200 |
| commit | 075edbe3bad4c22995ab472c507565b48c4e0985 (patch) | |
| tree | c5714d1db298d18a3d265b0041dc7b5e0a7fe5dd /hw/intc | |
| parent | 11ad93f68195f68cc94d988f2aa50b4d190ee52a (diff) | |
| download | focaccia-qemu-075edbe3bad4c22995ab472c507565b48c4e0985.tar.gz focaccia-qemu-075edbe3bad4c22995ab472c507565b48c4e0985.zip | |
xics: Implement H_IPOLL
This adds support for the H_IPOLL hypercall which the guest uses to poll for a pending interrupt. This hypercall is mandatory for PAPR+ and there is no way for the guest to detect whether it is supported or not so just add it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'hw/intc')
| -rw-r--r-- | hw/intc/xics.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/hw/intc/xics.c b/hw/intc/xics.c index 1c6e6f5454..eb932762b3 100644 --- a/hw/intc/xics.c +++ b/hw/intc/xics.c @@ -689,6 +689,18 @@ static target_ulong h_eoi(PowerPCCPU *cpu, sPAPREnvironment *spapr, return H_SUCCESS; } +static target_ulong h_ipoll(PowerPCCPU *cpu, sPAPREnvironment *spapr, + target_ulong opcode, target_ulong *args) +{ + CPUState *cs = CPU(cpu); + ICPState *ss = &spapr->icp->ss[cs->cpu_index]; + + args[0] = ss->xirr; + args[1] = ss->mfrr; + + return H_SUCCESS; +} + static void rtas_set_xive(PowerPCCPU *cpu, sPAPREnvironment *spapr, uint32_t token, uint32_t nargs, target_ulong args, @@ -842,6 +854,7 @@ static void xics_realize(DeviceState *dev, Error **errp) spapr_register_hypercall(H_IPI, h_ipi); spapr_register_hypercall(H_XIRR, h_xirr); spapr_register_hypercall(H_EOI, h_eoi); + spapr_register_hypercall(H_IPOLL, h_ipoll); object_property_set_bool(OBJECT(icp->ics), true, "realized", &error); if (error) { |