From 075edbe3bad4c22995ab472c507565b48c4e0985 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 26 Sep 2013 16:18:45 +1000 Subject: 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 Signed-off-by: Alexey Kardashevskiy Acked-by: Alexander Graf Signed-off-by: Alexander Graf --- hw/intc/xics.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'hw/intc') 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) { -- cgit v1.2.1