From: Chalapathi V <chalapath...@linux.ibm.com>
The nest1 chiplet handle the high speed i/o traffic over PCIe and others.
The nest1 chiplet consists of PowerBus Fabric controller,
nest Memory Management Unit, chiplet control unit and more.
This commit creates a nest1 chiplet model and initialize and realize the
pervasive chiplet model where chiplet control registers are implemented.
Signed-off-by: Chalapathi V <chalapath...@linux.ibm.com>
---
hw/ppc/meson.build | 1 +
hw/ppc/pnv_nest1_chiplet.c | 94 +++++++++++++++++++++++++++++++++++++++
include/hw/ppc/pnv_nest_chiplet.h | 41 +++++++++++++++++
3 files changed, 136 insertions(+)
create mode 100644 hw/ppc/pnv_nest1_chiplet.c
create mode 100644 include/hw/ppc/pnv_nest_chiplet.h
diff --git a/hw/ppc/meson.build b/hw/ppc/meson.build
index c80d2f6..4e45e5c 100644
--- a/hw/ppc/meson.build
+++ b/hw/ppc/meson.build
@@ -51,6 +51,7 @@ ppc_ss.add(when: 'CONFIG_POWERNV', if_true: files(
'pnv_homer.c',
'pnv_pnor.c',
'pnv_pervasive.c',
+ 'pnv_nest1_chiplet.c',
))
# PowerPC 4xx boards
ppc_ss.add(when: 'CONFIG_PPC405', if_true: files(
diff --git a/hw/ppc/pnv_nest1_chiplet.c b/hw/ppc/pnv_nest1_chiplet.c
new file mode 100644
index 0000000..e078076
--- /dev/null
+++ b/hw/ppc/pnv_nest1_chiplet.c
@@ -0,0 +1,94 @@
+/*
+ * QEMU PowerPC nest1 chiplet model
+ *
+ * Copyright (c) 2023, IBM Corporation.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This code is licensed under the GPL version 2 or later. See the
+ * COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "hw/qdev-properties.h"
+#include "hw/ppc/pnv.h"
+#include "hw/ppc/pnv_xscom.h"
+#include "hw/ppc/pnv_nest_chiplet.h"
+#include "hw/ppc/pnv_pervasive.h"
+#include "hw/ppc/fdt.h"
+#include <libfdt.h>
+
+/*
+ * The nest1 chiplet contains chiplet control unit,
+ * PowerBus/RaceTrack/Bridge logic, nest Memory Management Unit(nMMU)
+ * and more.
+ */
+
+static void pnv_nest1_chiplet_realize(DeviceState *dev, Error **errp)
+{
+ PnvNest1Chiplet *nest1_chiplet = PNV_NEST1CHIPLET(dev);
+
+ object_initialize_child(OBJECT(nest1_chiplet), "perv_chiplet",
+ &nest1_chiplet->perv_chiplet,
+ TYPE_PNV_PERV_CHIPLET);
+
+ if (!qdev_realize(DEVICE(&nest1_chiplet->perv_chiplet), NULL, errp)) {
+ return;
+ }
+}
+
+static int pnv_nest1_chiplet_dt_xscom(PnvXScomInterface *dev, void *fdt,
+ int offset)
+{
+ g_autofree char *name = NULL;
+ int nest1_chiplet_offset;
+ const char compat[] = "ibm,power10-nest1-chiplet";
+
+ name = g_strdup_printf("nest1_chiplet@%x",
+ PNV10_XSCOM_NEST1_CTRL_CHIPLET_BASE);
+ nest1_chiplet_offset = fdt_add_subnode(fdt, offset, name);
+ _FDT(nest1_chiplet_offset);
+
+ _FDT(fdt_setprop(fdt, nest1_chiplet_offset, "compatible",
+ compat, sizeof(compat)));
+ return 0;
+}
+
+static void pnv_nest1_dt_populate(void *fdt)
+{
+
+ uint32_t nest1_base = cpu_to_be32(PNV10_XSCOM_NEST1_CTRL_CHIPLET_BASE);
+ pnv_perv_dt(nest1_base, fdt, 0);
+}
+
+static void pnv_nest1_chiplet_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ PnvNest1Class *nest1_class = PNV_NEST1CHIPLET_CLASS(klass);
+ PnvXScomInterfaceClass *xscomc = PNV_XSCOM_INTERFACE_CLASS(klass);
+
+ xscomc->dt_xscom = pnv_nest1_chiplet_dt_xscom;
+
+ dc->desc = "PowerNV nest1 chiplet";
+ dc->realize = pnv_nest1_chiplet_realize;
+ nest1_class->nest1_dt_populate = pnv_nest1_dt_populate;
+}
+
+static const TypeInfo pnv_nest1_chiplet_info = {
+ .name = TYPE_PNV_NEST1_CHIPLET,
+ .parent = TYPE_DEVICE,
+ .instance_size = sizeof(PnvNest1Chiplet),
+ .class_init = pnv_nest1_chiplet_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_PNV_XSCOM_INTERFACE },
+ { }
+ }
+};
+
+static void pnv_nest1_chiplet_register_types(void)
+{
+ type_register_static(&pnv_nest1_chiplet_info);
+}
+
+type_init(pnv_nest1_chiplet_register_types);
diff --git a/include/hw/ppc/pnv_nest_chiplet.h
b/include/hw/ppc/pnv_nest_chiplet.h
new file mode 100644
index 0000000..12525d3
--- /dev/null
+++ b/include/hw/ppc/pnv_nest_chiplet.h
@@ -0,0 +1,41 @@
+/*
+ * QEMU PowerPC nest chiplet model
+ *
+ * Copyright (c) 2023, IBM Corporation.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * This code is licensed under the GPL version 2 or later. See the
+ * COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef PPC_PNV_NEST1_CHIPLET_H
+#define PPC_PNV_NEST1_CHIPLET_H
+
+#include "hw/ppc/pnv_pervasive.h"
+
+#define TYPE_PNV_NEST1_CHIPLET "pnv-nest1-chiplet"
+typedef struct PnvNest1Class PnvNest1Class;
+typedef struct PnvNest1Chiplet PnvNest1Chiplet;
+DECLARE_OBJ_CHECKERS(PnvNest1Chiplet, PnvNest1Class,
+ PNV_NEST1CHIPLET, TYPE_PNV_NEST1_CHIPLET)
+
+typedef struct PnvNest1Chiplet {
+ DeviceState parent;
+
+ struct PnvChip *chip;
+
+ /* common pervasive chiplet unit */
+ PnvPervChiplet perv_chiplet;
+} PnvNest1Chiplet;
+
+struct PnvNest1Class {
+ DeviceClass parent_class;
+
+ DeviceRealize parent_realize;
+
+ void (*nest1_dt_populate)(void *fdt);
+};
+
+#endif /*PPC_PNV_NEST1_CHIPLET_H */
--
1.8.3.1
