[PULL,32/96] ppc/pnv: Add big-core machine property

Commit Message

Nicholas Piggin July 25, 2024, 11:53 p.m. UTC

Big-core implementation is complete, so expose it as a machine
property that may be set with big-core=on option on powernv9 and
powernv10 machines.

Reviewed-by: Cédric Le Goater <[e-mail]>
Signed-off-by: Nicholas Piggin <[e-mail]>
---
 hw/ppc/pnv.c | 61 ++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 45 insertions(+), 16 deletions(-)

Patch

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 4605a49d28..d19516c2d7 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -2581,6 +2581,34 @@  static int pnv10_xive_match_nvt(XiveFabric *xfb, uint8_t format,
     return total_count;
 }
 
+static bool pnv_machine_get_big_core(Object *obj, Error **errp)
+{
+    PnvMachineState *pnv = PNV_MACHINE(obj);
+    return pnv->big_core;
+}
+
+static void pnv_machine_set_big_core(Object *obj, bool value, Error **errp)
+{
+    PnvMachineState *pnv = PNV_MACHINE(obj);
+    pnv->big_core = value;
+}
+
+static bool pnv_machine_get_hb(Object *obj, Error **errp)
+{
+    PnvMachineState *pnv = PNV_MACHINE(obj);
+
+    return !!pnv->fw_load_addr;
+}
+
+static void pnv_machine_set_hb(Object *obj, bool value, Error **errp)
+{
+    PnvMachineState *pnv = PNV_MACHINE(obj);
+
+    if (value) {
+        pnv->fw_load_addr = 0x8000000;
+    }
+}
+
 static void pnv_machine_power8_class_init(ObjectClass *oc, void *data)
 {
     MachineClass *mc = MACHINE_CLASS(oc);
@@ -2632,6 +2660,12 @@  static void pnv_machine_power9_class_init(ObjectClass *oc, void *data)
     pmc->dt_power_mgt = pnv_dt_power_mgt;
 
     machine_class_allow_dynamic_sysbus_dev(mc, TYPE_PNV_PHB);
+
+    object_class_property_add_bool(oc, "big-core",
+                                   pnv_machine_get_big_core,
+                                   pnv_machine_set_big_core);
+    object_class_property_set_description(oc, "big-core",
+                              "Use big-core (aka fused-core) mode");
 }
 
 static void pnv_machine_p10_common_class_init(ObjectClass *oc, void *data)
@@ -2668,6 +2702,17 @@  static void pnv_machine_power10_class_init(ObjectClass *oc, void *data)
 
     pnv_machine_p10_common_class_init(oc, data);
     mc->desc = "IBM PowerNV (Non-Virtualized) POWER10";
+
+    /*
+     * This is the parent of POWER10 Rainier class, so properies go here
+     * rather than common init (which would add them to both parent and
+     * child which is invalid).
+     */
+    object_class_property_add_bool(oc, "big-core",
+                                   pnv_machine_get_big_core,
+                                   pnv_machine_set_big_core);
+    object_class_property_set_description(oc, "big-core",
+                              "Use big-core (aka fused-core) mode");
 }
 
 static void pnv_machine_p10_rainier_class_init(ObjectClass *oc, void *data)
@@ -2680,22 +2725,6 @@  static void pnv_machine_p10_rainier_class_init(ObjectClass *oc, void *data)
     pmc->i2c_init = pnv_rainier_i2c_init;
 }
 
-static bool pnv_machine_get_hb(Object *obj, Error **errp)
-{
-    PnvMachineState *pnv = PNV_MACHINE(obj);
-
-    return !!pnv->fw_load_addr;
-}
-
-static void pnv_machine_set_hb(Object *obj, bool value, Error **errp)
-{
-    PnvMachineState *pnv = PNV_MACHINE(obj);
-
-    if (value) {
-        pnv->fw_load_addr = 0x8000000;
-    }
-}
-
 static void pnv_cpu_do_nmi_on_cpu(CPUState *cs, run_on_cpu_data arg)
 {
     CPUPPCState *env = cpu_env(cs);