ppc/pnv: Introduce PnvMachineClass::dt_power_mgt()

We add an extra node to advertise power management on some machines,
namely powernv9 and powernv10. This is achieved by using the
pnv_is_power9() and pnv_is_power10() helpers.

This can be achieved with QOM. Add a method to the base class for
powernv machines and have it implemented by machine types that
support power management instead.

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <157623839642.360005.9243510140436689941.stgit@bahia.lan>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 6 insertions, 2 deletions

diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h
index d534746..8a42c19 100644
--- a/include/hw/ppc/pnv.h
+++ b/include/hw/ppc/pnv.h
@@ -190,6 +190,8 @@ PowerPCCPU *pnv_chip_find_cpu(PnvChip *chip, uint32_t pir);
 #define PNV_MACHINE_CLASS(klass) \
     OBJECT_CLASS_CHECK(PnvMachineClass, klass, TYPE_PNV_MACHINE)
 
+typedef struct PnvMachineState PnvMachineState;
+
 typedef struct PnvMachineClass {
     /*< private >*/
     MachineClass parent_class;
@@ -197,9 +199,11 @@ typedef struct PnvMachineClass {
     /*< public >*/
     const char *compat;
     int compat_size;
+
+    void (*dt_power_mgt)(PnvMachineState *pnv, void *fdt);
 } PnvMachineClass;
 
-typedef struct PnvMachineState {
+struct PnvMachineState {
     /*< private >*/
     MachineState parent_obj;
 
@@ -216,7 +220,7 @@ typedef struct PnvMachineState {
     Notifier     powerdown_notifier;
 
     PnvPnor      *pnor;
-} PnvMachineState;
+};
 
 static inline bool pnv_chip_is_power9(const PnvChip *chip)
 {