ppc/xics: extend the QOM interface to handle ICPs

Let's add two new handlers for ICPs. One is to get an ICP object from
a server number and a second is to resend the irqs when needed.

The icp_resend() handler is a temporary workaround needed by the
ics-simple post_load() handler. It will be removed when the post_load
portion can be done at the machine level.
Signed-off-by: NCédric Le Goater <clg@kaod.org>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>

hw/intc/xics.c

@@ -216,7 +216,7 @@ static void icp_check_ipi(ICPState *ss)
     qemu_irq_raise(ss->output);
 }
 
-static void icp_resend(ICPState *ss)
+void icp_resend(ICPState *ss)
 {
     XICSFabric *xi = ss->xics;
     XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);

hw/ppc/spapr.c

@@ -2984,6 +2984,24 @@ static void spapr_ics_resend(XICSFabric *dev)
     ics_resend(spapr->ics);
 }
 
+static ICPState *spapr_icp_get(XICSFabric *xi, int server)
+{
+    sPAPRMachineState *spapr = SPAPR_MACHINE(xi);
+
+    return (server < spapr->xics->nr_servers) ? &spapr->xics->ss[server] :
+        NULL;
+}
+
+static void spapr_icp_resend(XICSFabric *xi)
+{
+    sPAPRMachineState *spapr = SPAPR_MACHINE(xi);
+    int i;
+
+    for (i = 0; i < spapr->xics->nr_servers; i++) {
+        icp_resend(&spapr->xics->ss[i]);
+    }
+}
+
 static void spapr_machine_class_init(ObjectClass *oc, void *data)
 {
     MachineClass *mc = MACHINE_CLASS(oc);
@@ -3032,6 +3050,8 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
     vhc->store_hpte = spapr_store_hpte;
     xic->ics_get = spapr_ics_get;
     xic->ics_resend = spapr_ics_resend;
+    xic->icp_get = spapr_icp_get;
+    xic->icp_resend = spapr_icp_resend;
 }
 
 static const TypeInfo spapr_machine_info = {

include/hw/ppc/xics.h

@@ -193,6 +193,8 @@ typedef struct XICSFabricClass {
     InterfaceClass parent;
     ICSState *(*ics_get)(XICSFabric *xi, int irq);
     void (*ics_resend)(XICSFabric *xi);
+    ICPState *(*icp_get)(XICSFabric *xi, int server);
+    void (*icp_resend)(XICSFabric *xi);
 } XICSFabricClass;
 
 #define XICS_IRQS_SPAPR               1024
@@ -223,5 +225,6 @@ void ics_simple_write_xive(ICSState *ics, int nr, int server,
 void ics_set_irq_type(ICSState *ics, int srcno, bool lsi);
 
 void ics_resend(ICSState *ics);
+void icp_resend(ICPState *ss);
 
 #endif /* XICS_H */