ppc/pnv: Add a OCC model for POWER10

Our OCC model is very mininal and POWER10 can simply reuse the OCC
model we introduced for POWER9.

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

hw/ppc/pnv.c

@@ -1582,6 +1582,7 @@ static void pnv_chip_power10_instance_init(Object *obj)
                               "xive-fabric");
     object_initialize_child(obj, "psi", &chip10->psi, TYPE_PNV10_PSI);
     object_initialize_child(obj, "lpc", &chip10->lpc, TYPE_PNV10_LPC);
+    object_initialize_child(obj, "occ",  &chip10->occ, TYPE_PNV10_OCC);
 }
 
 static void pnv_chip_power10_realize(DeviceState *dev, Error **errp)
@@ -1647,6 +1648,15 @@ static void pnv_chip_power10_realize(DeviceState *dev, Error **errp)
     chip->fw_mr = &chip10->lpc.isa_fw;
     chip->dt_isa_nodename = g_strdup_printf("/lpcm-opb@%" PRIx64 "/lpc@0",
                                             (uint64_t) PNV10_LPCM_BASE(chip));
+
+    /* Create the simplified OCC model */
+    object_property_set_link(OBJECT(&chip10->occ), "psi", OBJECT(&chip10->psi),
+                             &error_abort);
+    if (!qdev_realize(DEVICE(&chip10->occ), NULL, errp)) {
+        return;
+    }
+    pnv_xscom_add_subregion(chip, PNV10_XSCOM_OCC_BASE,
+                            &chip10->occ.xscom_regs);
 }
 
 static uint32_t pnv_chip_power10_xscom_pcba(PnvChip *chip, uint64_t addr)

hw/ppc/pnv_occ.c

@@ -236,7 +236,9 @@ static const MemoryRegionOps pnv_occ_power9_xscom_ops = {
 static void pnv_occ_power9_class_init(ObjectClass *klass, void *data)
 {
     PnvOCCClass *poc = PNV_OCC_CLASS(klass);
+    DeviceClass *dc = DEVICE_CLASS(klass);
 
+    dc->desc = "PowerNV OCC Controller (POWER9)";
     poc->xscom_size = PNV9_XSCOM_OCC_SIZE;
     poc->xscom_ops = &pnv_occ_power9_xscom_ops;
     poc->psi_irq = PSIHB9_IRQ_OCC;
@@ -249,6 +251,19 @@ static const TypeInfo pnv_occ_power9_type_info = {
     .class_init    = pnv_occ_power9_class_init,
 };
 
+static void pnv_occ_power10_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    dc->desc = "PowerNV OCC Controller (POWER10)";
+}
+
+static const TypeInfo pnv_occ_power10_type_info = {
+    .name          = TYPE_PNV10_OCC,
+    .parent        = TYPE_PNV9_OCC,
+    .class_init    = pnv_occ_power10_class_init,
+};
+
 static void pnv_occ_realize(DeviceState *dev, Error **errp)
 {
     PnvOCC *occ = PNV_OCC(dev);
@@ -297,6 +312,7 @@ static void pnv_occ_register_types(void)
     type_register_static(&pnv_occ_type_info);
     type_register_static(&pnv_occ_power8_type_info);
     type_register_static(&pnv_occ_power9_type_info);
+    type_register_static(&pnv_occ_power10_type_info);
 }
 
 type_init(pnv_occ_register_types);

include/hw/ppc/pnv.h

@@ -128,6 +128,7 @@ struct Pnv10Chip {
     PnvXive2     xive;
     Pnv9Psi      psi;
     PnvLpcController lpc;
+    PnvOCC       occ;
 };
 
 #define PNV10_PIR2FUSEDCORE(pir) (((pir) >> 3) & 0xf)

include/hw/ppc/pnv_occ.h

@@ -32,6 +32,8 @@ DECLARE_INSTANCE_CHECKER(PnvOCC, PNV8_OCC,
 #define TYPE_PNV9_OCC TYPE_PNV_OCC "-POWER9"
 DECLARE_INSTANCE_CHECKER(PnvOCC, PNV9_OCC,
                          TYPE_PNV9_OCC)
+#define TYPE_PNV10_OCC TYPE_PNV_OCC "-POWER10"
+DECLARE_INSTANCE_CHECKER(PnvOCC, PNV10_OCC, TYPE_PNV10_OCC)
 
 #define PNV_OCC_SENSOR_DATA_BLOCK_OFFSET 0x00580000
 #define PNV_OCC_SENSOR_DATA_BLOCK_SIZE   0x00025800

include/hw/ppc/pnv_xscom.h

@@ -131,6 +131,9 @@ struct PnvXScomInterfaceClass {
 #define PNV10_XSCOM_PSIHB_BASE     0x3011D00
 #define PNV10_XSCOM_PSIHB_SIZE     0x100
 
+#define PNV10_XSCOM_OCC_BASE       PNV9_XSCOM_OCC_BASE
+#define PNV10_XSCOM_OCC_SIZE       PNV9_XSCOM_OCC_SIZE
+
 #define PNV10_XSCOM_XIVE2_BASE     0x2010800
 #define PNV10_XSCOM_XIVE2_SIZE     0x400