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[v5,5/9] ppc/pnv: extend the machine with a XICSFabric interface

Message ID 1491205565-12831-6-git-send-email-clg@kaod.org
State New
Headers show

Commit Message

Cédric Le Goater April 3, 2017, 7:46 a.m. UTC 
A XICSFabric QOM interface is used by the XICS layer to manipulate the
ICP and ICS objects. Let's define the associated handlers for the
PowerNV machine. All handlers should be defined even if there is no
ICS under the PowerNV machine yet.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 Changes since v4:

 - removed the empty ics_get() and ics_resend() handlers

 hw/ppc/pnv.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
diff mbox

Patch

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 3fa722af82e6..2d7aa5dcfbca 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -34,6 +34,7 @@ 
 #include "qemu/cutils.h"
 #include "qapi/visitor.h"
 
+#include "hw/ppc/xics.h"
 #include "hw/ppc/pnv_xscom.h"
 
 #include "hw/isa/isa.h"
@@ -737,6 +738,29 @@  static const TypeInfo pnv_chip_info = {
     .abstract      = true,
 };
 
+static PowerPCCPU *ppc_get_vcpu_by_pir(int pir)
+{
+    CPUState *cs;
+
+    CPU_FOREACH(cs) {
+        PowerPCCPU *cpu = POWERPC_CPU(cs);
+        CPUPPCState *env = &cpu->env;
+
+        if (env->spr_cb[SPR_PIR].default_value == pir) {
+            return cpu;
+        }
+    }
+
+    return NULL;
+}
+
+static ICPState *pnv_icp_get(XICSFabric *xi, int pir)
+{
+    PowerPCCPU *cpu = ppc_get_vcpu_by_pir(pir);
+
+    return cpu ? ICP(cpu->intc) : NULL;
+}
+
 static void pnv_get_num_chips(Object *obj, Visitor *v, const char *name,
                               void *opaque, Error **errp)
 {
@@ -787,6 +811,7 @@  static void powernv_machine_class_props_init(ObjectClass *oc)
 static void powernv_machine_class_init(ObjectClass *oc, void *data)
 {
     MachineClass *mc = MACHINE_CLASS(oc);
+    XICSFabricClass *xic = XICS_FABRIC_CLASS(oc);
 
     mc->desc = "IBM PowerNV (Non-Virtualized)";
     mc->init = ppc_powernv_init;
@@ -797,6 +822,7 @@  static void powernv_machine_class_init(ObjectClass *oc, void *data)
     mc->no_parallel = 1;
     mc->default_boot_order = NULL;
     mc->default_ram_size = 1 * G_BYTE;
+    xic->icp_get = pnv_icp_get;
 
     powernv_machine_class_props_init(oc);
 }
@@ -807,6 +833,10 @@  static const TypeInfo powernv_machine_info = {
     .instance_size = sizeof(PnvMachineState),
     .instance_init = powernv_machine_initfn,
     .class_init    = powernv_machine_class_init,
+    .interfaces = (InterfaceInfo[]) {
+        { TYPE_XICS_FABRIC },
+        { },
+    },
 };
 
 static void powernv_machine_register_types(void)