[Qemu-devel] [PATCH v2 3/8] ppc/xics: Implement H_IPOLL using an accessor

[Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>]

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

None of the other presenter functions directly mucks with the
internal state, so don't do it there either.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/intc/xics.c        | 8 ++++++++
 hw/intc/xics_spapr.c  | 7 ++++---
 include/hw/ppc/xics.h | 1 +
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index f01af08..f43f98a 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -288,6 +288,14 @@ uint32_t icp_accept(ICPState *ss)
     return xirr;
 }
 
+uint32_t icp_ipoll(ICPState *ss, uint32_t *mfrr)
+{
+    if (mfrr) {
+        *mfrr = ss->mfrr;
+    }
+    return ss->xirr;
+}
+
 void icp_eoi(XICSState *icp, int server, uint32_t xirr)
 {
     ICPState *ss = icp->ss + server;
diff --git a/hw/intc/xics_spapr.c b/hw/intc/xics_spapr.c
index 89190ef..94571dd 100644
--- a/hw/intc/xics_spapr.c
+++ b/hw/intc/xics_spapr.c
@@ -99,10 +99,11 @@ static target_ulong h_ipoll(PowerPCCPU *cpu, sPAPRMachineState *spapr,
                             target_ulong opcode, target_ulong *args)
 {
     CPUState *cs = CPU(cpu);
-    ICPState *ss = &spapr->icp->ss[cs->cpu_index];
+    uint32_t mfrr;
+    uint32_t xirr = icp_ipoll(spapr->icp->ss + cs->cpu_index, &mfrr);
 
-    args[0] = ss->xirr;
-    args[1] = ss->mfrr;
+    args[0] = xirr;
+    args[1] = mfrr;
 
     return H_SUCCESS;
 }
diff --git a/include/hw/ppc/xics.h b/include/hw/ppc/xics.h
index 3349006..7445a14 100644
--- a/include/hw/ppc/xics.h
+++ b/include/hw/ppc/xics.h
@@ -186,6 +186,7 @@ int xics_get_cpu_index_by_dt_id(int cpu_dt_id);
 void icp_set_cppr(XICSState *icp, int server, uint8_t cppr);
 void icp_set_mfrr(XICSState *icp, int server, uint8_t mfrr);
 uint32_t icp_accept(ICPState *ss);
+uint32_t icp_ipoll(ICPState *ss, uint32_t *mfrr);
 void icp_eoi(XICSState *icp, int server, uint32_t xirr);
 
 void ics_write_xive(ICSState *ics, int nr, int server,
-- 
2.7.4