ppc/xics: use the QOM interface to resend irqs

Also change the ICPState 'xics' backlink to be a XICSFabric, this
removes the need of using qdev_get_machine() to get the QOM interface
in some of the routines.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

hw/intc/xics.c

@@ -231,14 +231,14 @@ static void icp_check_ipi(ICPState *ss)
 
 static void icp_resend(ICPState *ss)
 {
-    ICSState *ics;
+    XICSFabric *xi = ss->xics;
+    XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);
 
     if (ss->mfrr < CPPR(ss)) {
         icp_check_ipi(ss);
     }
-    QLIST_FOREACH(ics, &ss->xics->ics, list) {
-        ics_resend(ics);
-    }
+
+    xic->ics_resend(xi);
 }
 
 void icp_set_cppr(ICPState *ss, uint8_t cppr)
@@ -299,6 +299,8 @@ uint32_t icp_ipoll(ICPState *ss, uint32_t *mfrr)
 
 void icp_eoi(ICPState *ss, uint32_t xirr)
 {
+    XICSFabric *xi = ss->xics;
+    XICSFabricClass *xic = XICS_FABRIC_GET_CLASS(xi);
     ICSState *ics;
     uint32_t irq;
 
@@ -306,10 +308,10 @@ void icp_eoi(ICPState *ss, uint32_t xirr)
     ss->xirr = (ss->xirr & ~CPPR_MASK) | (xirr & CPPR_MASK);
     trace_xics_icp_eoi(ss->cs->cpu_index, xirr, ss->xirr);
     irq = xirr & XISR_MASK;
-    QLIST_FOREACH(ics, &ss->xics->ics, list) {
-        if (ics_valid_irq(ics, irq)) {
-            ics_eoi(ics, irq);
-        }
+
+    ics = xic->ics_get(xi, irq);
+    if (ics) {
+        ics_eoi(ics, irq);
     }
     if (!XISR(ss)) {
         icp_resend(ss);
@@ -401,7 +403,7 @@ static void icp_realize(DeviceState *dev, Error **errp)
         return;
     }
 
-    icp->xics = XICS_COMMON(obj);
+    icp->xics = XICS_FABRIC(obj);
 }
 
 

hw/ppc/spapr.c

@@ -100,6 +100,7 @@ static XICSState *try_create_xics(sPAPRMachineState *spapr,
                                   const char *type_icp, int nr_servers,
                                   int nr_irqs, Error **errp)
 {
+    XICSFabric *xi = XICS_FABRIC(spapr);
     Error *err = NULL, *local_err = NULL;
     XICSState *xics;
     ICSState *ics = NULL;
@@ -131,7 +132,7 @@ static XICSState *try_create_xics(sPAPRMachineState *spapr,
 
         object_initialize(icp, sizeof(*icp), type_icp);
         object_property_add_child(OBJECT(xics), "icp[*]", OBJECT(icp), NULL);
-        object_property_add_const_link(OBJECT(icp), "xics", OBJECT(xics), NULL);
+        object_property_add_const_link(OBJECT(icp), "xics", OBJECT(xi), NULL);
         object_property_set_bool(OBJECT(icp), true, "realized", &err);
         if (err) {
             goto error;

include/hw/ppc/xics.h

@@ -69,6 +69,7 @@ typedef struct ICPState ICPState;
 typedef struct ICSStateClass ICSStateClass;
 typedef struct ICSState ICSState;
 typedef struct ICSIRQState ICSIRQState;
+typedef struct XICSFabric XICSFabric;
 
 struct XICSStateClass {
     DeviceClass parent_class;
@@ -115,7 +116,7 @@ struct ICPState {
     qemu_irq output;
     bool cap_irq_xics_enabled;
 
-    XICSState *xics;
+    XICSFabric *xics;
 };
 
 #define TYPE_ICS_BASE "ics-base"