[PULL 06/27] ppc/pnv: Add ChipTOD model for Power11

[Harsh Prateek Bora <harshpb@linux.ibm.com>]

From: Aditya Gupta <adityag@linux.ibm.com>

Introduce Power11 ChipTod. The code has been copied from Power10 ChipTod
code as the Power11 core is same as Power10 core.

Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Aditya Gupta <adityag@linux.ibm.com>
Tested-by: Amit Machhiwal <amachhiw@linux.ibm.com>
Tested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Link: https://lore.kernel.org/r/20250925173049.891406-7-adityag@linux.ibm.com
Message-ID: <20250925173049.891406-7-adityag@linux.ibm.com>
---
 include/hw/ppc/pnv_chiptod.h |  2 ++
 hw/ppc/pnv.c                 | 15 +++++++++
 hw/ppc/pnv_chiptod.c         | 59 ++++++++++++++++++++++++++++++++++++
 3 files changed, 76 insertions(+)

diff --git a/include/hw/ppc/pnv_chiptod.h b/include/hw/ppc/pnv_chiptod.h
index fde569bcbf..466b06560a 100644
--- a/include/hw/ppc/pnv_chiptod.h
+++ b/include/hw/ppc/pnv_chiptod.h
@@ -17,6 +17,8 @@ OBJECT_DECLARE_TYPE(PnvChipTOD, PnvChipTODClass, PNV_CHIPTOD)
 DECLARE_INSTANCE_CHECKER(PnvChipTOD, PNV9_CHIPTOD, TYPE_PNV9_CHIPTOD)
 #define TYPE_PNV10_CHIPTOD TYPE_PNV_CHIPTOD "-POWER10"
 DECLARE_INSTANCE_CHECKER(PnvChipTOD, PNV10_CHIPTOD, TYPE_PNV10_CHIPTOD)
+#define TYPE_PNV11_CHIPTOD TYPE_PNV_CHIPTOD "-POWER11"
+DECLARE_INSTANCE_CHECKER(PnvChipTOD, PNV11_CHIPTOD, TYPE_PNV11_CHIPTOD)
 
 enum tod_state {
     tod_error = 0,
diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 2b4df6076c..f0469cdb8b 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -2495,6 +2495,8 @@ static void pnv_chip_power11_instance_init(Object *obj)
     object_initialize_child(obj, "xive", &chip11->xive, TYPE_PNV_XIVE2);
     object_property_add_alias(obj, "xive-fabric", OBJECT(&chip11->xive),
                               "xive-fabric");
+    object_initialize_child(obj, "chiptod", &chip11->chiptod,
+                            TYPE_PNV11_CHIPTOD);
     object_initialize_child(obj, "n1-chiplet", &chip11->n1_chiplet,
                             TYPE_PNV_N1_CHIPLET);
 
@@ -2653,6 +2655,19 @@ static void pnv_chip_power11_realize(DeviceState *dev, Error **errp)
     chip->dt_isa_nodename = g_strdup_printf("/lpcm-opb@%" PRIx64 "/lpc@0",
                                             (uint64_t) PNV11_LPCM_BASE(chip));
 
+    /* ChipTOD */
+    object_property_set_bool(OBJECT(&chip11->chiptod), "primary",
+                             chip->chip_id == 0, &error_abort);
+    object_property_set_bool(OBJECT(&chip11->chiptod), "secondary",
+                             chip->chip_id == 1, &error_abort);
+    object_property_set_link(OBJECT(&chip11->chiptod), "chip", OBJECT(chip),
+                             &error_abort);
+    if (!qdev_realize(DEVICE(&chip11->chiptod), NULL, errp)) {
+        return;
+    }
+    pnv_xscom_add_subregion(chip, PNV11_XSCOM_CHIPTOD_BASE,
+                            &chip11->chiptod.xscom_regs);
+
     /* HOMER (must be created before OCC) */
     object_property_set_link(OBJECT(&chip11->homer), "chip", OBJECT(chip),
                              &error_abort);
diff --git a/hw/ppc/pnv_chiptod.c b/hw/ppc/pnv_chiptod.c
index b9e9c7ba3d..f887a18cde 100644
--- a/hw/ppc/pnv_chiptod.c
+++ b/hw/ppc/pnv_chiptod.c
@@ -210,6 +210,22 @@ static void chiptod_power10_broadcast_ttype(PnvChipTOD *sender,
     }
 }
 
+static void chiptod_power11_broadcast_ttype(PnvChipTOD *sender,
+                                            uint32_t trigger)
+{
+    PnvMachineState *pnv = PNV_MACHINE(qdev_get_machine());
+    int i;
+
+    for (i = 0; i < pnv->num_chips; i++) {
+        Pnv11Chip *chip11 = PNV11_CHIP(pnv->chips[i]);
+        PnvChipTOD *chiptod = &chip11->chiptod;
+
+        if (chiptod != sender) {
+            chiptod_receive_ttype(chiptod, trigger);
+        }
+    }
+}
+
 static PnvCore *pnv_chip_get_core_by_xscom_base(PnvChip *chip,
                                                 uint32_t xscom_base)
 {
@@ -283,6 +299,12 @@ static PnvCore *chiptod_power10_tx_ttype_target(PnvChipTOD *chiptod,
     }
 }
 
+static PnvCore *chiptod_power11_tx_ttype_target(PnvChipTOD *chiptod,
+                                               uint64_t val)
+{
+    return chiptod_power10_tx_ttype_target(chiptod, val);
+}
+
 static void pnv_chiptod_xscom_write(void *opaque, hwaddr addr,
                                     uint64_t val, unsigned size)
 {
@@ -520,6 +542,42 @@ static const TypeInfo pnv_chiptod_power10_type_info = {
     }
 };
 
+static int pnv_chiptod_power11_dt_xscom(PnvXScomInterface *dev, void *fdt,
+                             int xscom_offset)
+{
+    const char compat[] = "ibm,power-chiptod\0ibm,power11-chiptod";
+
+    return pnv_chiptod_dt_xscom(dev, fdt, xscom_offset, compat, sizeof(compat));
+}
+
+static void pnv_chiptod_power11_class_init(ObjectClass *klass, const void *data)
+{
+    PnvChipTODClass *pctc = PNV_CHIPTOD_CLASS(klass);
+    DeviceClass *dc = DEVICE_CLASS(klass);
+    PnvXScomInterfaceClass *xdc = PNV_XSCOM_INTERFACE_CLASS(klass);
+
+    dc->desc = "PowerNV ChipTOD Controller (Power11)";
+    device_class_set_props(dc, pnv_chiptod_properties);
+
+    xdc->dt_xscom = pnv_chiptod_power11_dt_xscom;
+
+    pctc->broadcast_ttype = chiptod_power11_broadcast_ttype;
+    pctc->tx_ttype_target = chiptod_power11_tx_ttype_target;
+
+    pctc->xscom_size = PNV_XSCOM_CHIPTOD_SIZE;
+}
+
+static const TypeInfo pnv_chiptod_power11_type_info = {
+    .name          = TYPE_PNV11_CHIPTOD,
+    .parent        = TYPE_PNV_CHIPTOD,
+    .instance_size = sizeof(PnvChipTOD),
+    .class_init    = pnv_chiptod_power11_class_init,
+    .interfaces    = (const InterfaceInfo[]) {
+        { TYPE_PNV_XSCOM_INTERFACE },
+        { }
+    }
+};
+
 static void pnv_chiptod_reset(void *dev)
 {
     PnvChipTOD *chiptod = PNV_CHIPTOD(dev);
@@ -579,6 +637,7 @@ static void pnv_chiptod_register_types(void)
     type_register_static(&pnv_chiptod_type_info);
     type_register_static(&pnv_chiptod_power9_type_info);
     type_register_static(&pnv_chiptod_power10_type_info);
+    type_register_static(&pnv_chiptod_power11_type_info);
 }
 
 type_init(pnv_chiptod_register_types);
-- 
2.43.5