[Qemu-ppc] [PATCH v3 4/8] xics: minor changes and cleanups

[Alexey Kardashevskiy]

Before XICS-KVM comes, it makes sense to clean up the emulated XICS a bit.

This does:
1. add assert in ics_realize()
2. change variable names from "k" to more informative ones
3. add "const" to every TypeInfo
4. replace fprintf(stderr, ..."\n") with error_report
5. replace old style qdev_init_nofail() with new style
object_property_set_bool().

Signed-off-by: Alexey Kardashevskiy <address@hidden>
---
Changes:
v3:
* ics_realize() fixed to be actual realize callback rather than initfn
* asserts replaced with Error**
---
 hw/intc/xics.c | 42 ++++++++++++++++++++++++++++++------------
 1 file changed, 30 insertions(+), 12 deletions(-)

diff --git a/hw/intc/xics.c b/hw/intc/xics.c
index c80fa80..4d08c58 100644
--- a/hw/intc/xics.c
+++ b/hw/intc/xics.c
@@ -29,6 +29,7 @@
 #include "trace.h"
 #include "hw/ppc/spapr.h"
 #include "hw/ppc/xics.h"
+#include "qemu/error-report.h"
 
 /*
  * ICP: Presentation layer
@@ -211,7 +212,7 @@ static void icp_class_init(ObjectClass *klass, void *data)
     dc->vmsd = &vmstate_icp_server;
 }
 
-static TypeInfo icp_info = {
+static const TypeInfo icp_info = {
     .name = TYPE_ICP,
     .parent = TYPE_DEVICE,
     .instance_size = sizeof(ICPState),
@@ -442,15 +443,17 @@ static const VMStateDescription vmstate_ics = {
     },
 };
 
-static int ics_realize(DeviceState *dev)
+static void ics_realize(DeviceState *dev, Error **errp)
 {
     ICSState *ics = ICS(dev);
 
+    if (!ics->nr_irqs) {
+        error_setg(errp, "Number of interrupts needs to be greater 0");
+        return;
+    }
     ics->irqs = g_malloc0(ics->nr_irqs * sizeof(ICSIRQState));
     ics->islsi = g_malloc0(ics->nr_irqs * sizeof(bool));
     ics->qirqs = qemu_allocate_irqs(ics_set_irq, ics, ics->nr_irqs);
-
-    return 0;
 }
 
 static void ics_class_init(ObjectClass *klass, void *data)
@@ -458,13 +461,14 @@ static void ics_class_init(ObjectClass *klass, void *data)
     DeviceClass *dc = DEVICE_CLASS(klass);
     ICSStateClass *isc = ICS_CLASS(klass);
 
-    dc->init = ics_realize;
+    dc->realize = ics_realize;
     dc->vmsd = &vmstate_ics;
     dc->reset = ics_reset;
     isc->post_load = ics_post_load;
+    isc->post_load = ics_post_load;
 }
 
-static TypeInfo ics_info = {
+static const TypeInfo ics_info = {
     .name = TYPE_ICS,
     .parent = TYPE_DEVICE,
     .instance_size = sizeof(ICSState),
@@ -680,8 +684,8 @@ static void xics_cpu_setup(XICSState *icp, PowerPCCPU *cpu)
         break;
 
     default:
-        fprintf(stderr, "XICS interrupt controller does not support this CPU "
-                "bus model\n");
+        error_report("XICS interrupt controller does not support this CPU "
+                "bus model");
         abort();
     }
 }
@@ -690,8 +694,14 @@ static void xics_realize(DeviceState *dev, Error **errp)
 {
     XICSState *icp = XICS(dev);
     ICSState *ics = icp->ics;
+    Error *error = NULL;
     int i;
 
+    if (!icp->nr_servers) {
+        error_setg(errp, "Number of servers needs to be greater 0");
+        return;
+    }
+
     /* Registration of global state belongs into realize */
     spapr_rtas_register("ibm,set-xive", rtas_set_xive);
     spapr_rtas_register("ibm,get-xive", rtas_get_xive);
@@ -706,7 +716,11 @@ static void xics_realize(DeviceState *dev, Error **errp)
     ics->nr_irqs = icp->nr_irqs;
     ics->offset = XICS_IRQ_BASE;
     ics->icp = icp;
-    qdev_init_nofail(DEVICE(ics));
+    object_property_set_bool(OBJECT(icp->ics), true, "realized", &error);
+    if (error) {
+        error_propagate(errp, error);
+        return;
+    }
 
     icp->ss = g_malloc0(icp->nr_servers*sizeof(ICPState));
     for (i = 0; i < icp->nr_servers; i++) {
@@ -714,7 +728,11 @@ static void xics_realize(DeviceState *dev, Error **errp)
         object_initialize(&icp->ss[i], TYPE_ICP);
         snprintf(buffer, sizeof(buffer), "icp[%d]", i);
         object_property_add_child(OBJECT(icp), buffer, OBJECT(&icp->ss[i]), 
NULL);
-        qdev_init_nofail(DEVICE(&icp->ss[i]));
+        object_property_set_bool(OBJECT(&icp->ss[i]), true, "realized", 
&error);
+        if (error) {
+            error_propagate(errp, error);
+            return;
+        }
     }
 }
 
@@ -735,12 +753,12 @@ static Property xics_properties[] = {
 static void xics_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
-    XICSStateClass *k = XICS_CLASS(oc);
+    XICSStateClass *xsc = XICS_CLASS(oc);
 
     dc->realize = xics_realize;
     dc->props = xics_properties;
     dc->reset = xics_reset;
-    k->cpu_setup = xics_cpu_setup;
+    xsc->cpu_setup = xics_cpu_setup;
 }
 
 static const TypeInfo xics_info = {
-- 
1.8.3.2