perf: arm_cspmu: Add support for NVIDIA SCF and MCF attribute

Add support for NVIDIA System Cache Fabric (SCF) and Memory Control
Fabric (MCF) PMU attributes for CoreSight PMU implementation in
NVIDIA devices.

Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com>
Link: https://lore.kernel.org/r/20221111222330.48602-3-bwicaksono@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>

4 files changed, 426 insertions, 1 deletions

diff --git a/drivers/perf/arm_cspmu/Makefile b/drivers/perf/arm_cspmu/Makefile
index 9bc76de4002d..641db85c018b 100644
--- a/drivers/perf/arm_cspmu/Makefile
+++ b/drivers/perf/arm_cspmu/Makefile
@@ -3,4 +3,5 @@
 # SPDX-License-Identifier: GPL-2.0
 
 obj-$(CONFIG_ARM_CORESIGHT_PMU_ARCH_SYSTEM_PMU) += \
-	arm_cspmu.o
+	arm_cspmu.o \
+	nvidia_cspmu.o
diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/arm_cspmu.c
index e8f57aa9f047..e851eeb33f4a 100644
--- a/drivers/perf/arm_cspmu/arm_cspmu.c
+++ b/drivers/perf/arm_cspmu/arm_cspmu.c
@@ -31,6 +31,7 @@
 #include <acpi/processor.h>
 
 #include "arm_cspmu.h"
+#include "nvidia_cspmu.h"
 
 #define PMUNAME "arm_cspmu"
 #define DRVNAME "arm-cs-arch-pmu"
@@ -116,6 +117,9 @@
  */
 #define HILOHI_MAX_POLL	1000
 
+/* JEDEC-assigned JEP106 identification code */
+#define ARM_CSPMU_IMPL_ID_NVIDIA		0x36B
+
 static unsigned long arm_cspmu_cpuhp_state;
 
 /*
@@ -382,6 +386,11 @@ struct impl_match {
 };
 
 static const struct impl_match impl_match[] = {
+	{
+	  .pmiidr = ARM_CSPMU_IMPL_ID_NVIDIA,
+	  .mask = ARM_CSPMU_PMIIDR_IMPLEMENTER,
+	  .impl_init_ops = nv_cspmu_init_ops
+	},
 	{}
 };
 
diff --git a/drivers/perf/arm_cspmu/nvidia_cspmu.c b/drivers/perf/arm_cspmu/nvidia_cspmu.c
new file mode 100644
index 000000000000..c795414ec7c7
--- /dev/null
+++ b/drivers/perf/arm_cspmu/nvidia_cspmu.c
@@ -0,0 +1,398 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ *
+ */
+
+/* Support for NVIDIA specific attributes. */
+
+#include <linux/topology.h>
+
+#include "nvidia_cspmu.h"
+
+#define NV_PCIE_PORT_COUNT           10ULL
+#define NV_PCIE_FILTER_ID_MASK       GENMASK_ULL(NV_PCIE_PORT_COUNT - 1, 0)
+
+#define NV_NVL_C2C_PORT_COUNT        2ULL
+#define NV_NVL_C2C_FILTER_ID_MASK    GENMASK_ULL(NV_NVL_C2C_PORT_COUNT - 1, 0)
+
+#define NV_CNVL_PORT_COUNT           4ULL
+#define NV_CNVL_FILTER_ID_MASK       GENMASK_ULL(NV_CNVL_PORT_COUNT - 1, 0)
+
+#define NV_GENERIC_FILTER_ID_MASK    GENMASK_ULL(31, 0)
+
+#define NV_PRODID_MASK               GENMASK(31, 0)
+
+#define NV_FORMAT_NAME_GENERIC	0
+
+#define to_nv_cspmu_ctx(cspmu)	((struct nv_cspmu_ctx *)(cspmu->impl.ctx))
+
+#define NV_CSPMU_EVENT_ATTR_4_INNER(_pref, _num, _suff, _config)	\
+	ARM_CSPMU_EVENT_ATTR(_pref##_num##_suff, _config)
+
+#define NV_CSPMU_EVENT_ATTR_4(_pref, _suff, _config)			\
+	NV_CSPMU_EVENT_ATTR_4_INNER(_pref, _0_, _suff, _config),	\
+	NV_CSPMU_EVENT_ATTR_4_INNER(_pref, _1_, _suff, _config + 1),	\
+	NV_CSPMU_EVENT_ATTR_4_INNER(_pref, _2_, _suff, _config + 2),	\
+	NV_CSPMU_EVENT_ATTR_4_INNER(_pref, _3_, _suff, _config + 3)
+
+struct nv_cspmu_ctx {
+	const char *name;
+	u32 filter_mask;
+	u32 filter_default_val;
+	struct attribute **event_attr;
+	struct attribute **format_attr;
+};
+
+static struct attribute *scf_pmu_event_attrs[] = {
+	ARM_CSPMU_EVENT_ATTR(bus_cycles,			0x1d),
+
+	ARM_CSPMU_EVENT_ATTR(scf_cache_allocate,		0xF0),
+	ARM_CSPMU_EVENT_ATTR(scf_cache_refill,			0xF1),
+	ARM_CSPMU_EVENT_ATTR(scf_cache,				0xF2),
+	ARM_CSPMU_EVENT_ATTR(scf_cache_wb,			0xF3),
+
+	NV_CSPMU_EVENT_ATTR_4(socket, rd_data,			0x101),
+	NV_CSPMU_EVENT_ATTR_4(socket, dl_rsp,			0x105),
+	NV_CSPMU_EVENT_ATTR_4(socket, wb_data,			0x109),
+	NV_CSPMU_EVENT_ATTR_4(socket, ev_rsp,			0x10d),
+	NV_CSPMU_EVENT_ATTR_4(socket, prb_data,			0x111),
+
+	NV_CSPMU_EVENT_ATTR_4(socket, rd_outstanding,		0x115),
+	NV_CSPMU_EVENT_ATTR_4(socket, dl_outstanding,		0x119),
+	NV_CSPMU_EVENT_ATTR_4(socket, wb_outstanding,		0x11d),
+	NV_CSPMU_EVENT_ATTR_4(socket, wr_outstanding,		0x121),
+	NV_CSPMU_EVENT_ATTR_4(socket, ev_outstanding,		0x125),
+	NV_CSPMU_EVENT_ATTR_4(socket, prb_outstanding,		0x129),
+
+	NV_CSPMU_EVENT_ATTR_4(socket, rd_access,		0x12d),
+	NV_CSPMU_EVENT_ATTR_4(socket, dl_access,		0x131),
+	NV_CSPMU_EVENT_ATTR_4(socket, wb_access,		0x135),
+	NV_CSPMU_EVENT_ATTR_4(socket, wr_access,		0x139),
+	NV_CSPMU_EVENT_ATTR_4(socket, ev_access,		0x13d),
+	NV_CSPMU_EVENT_ATTR_4(socket, prb_access,		0x141),
+
+	NV_CSPMU_EVENT_ATTR_4(ocu, gmem_rd_data,		0x145),
+	NV_CSPMU_EVENT_ATTR_4(ocu, gmem_rd_access,		0x149),
+	NV_CSPMU_EVENT_ATTR_4(ocu, gmem_wb_access,		0x14d),
+	NV_CSPMU_EVENT_ATTR_4(ocu, gmem_rd_outstanding,		0x151),
+	NV_CSPMU_EVENT_ATTR_4(ocu, gmem_wr_outstanding,		0x155),
+
+	NV_CSPMU_EVENT_ATTR_4(ocu, rem_rd_data,			0x159),
+	NV_CSPMU_EVENT_ATTR_4(ocu, rem_rd_access,		0x15d),
+	NV_CSPMU_EVENT_ATTR_4(ocu, rem_wb_access,		0x161),
+	NV_CSPMU_EVENT_ATTR_4(ocu, rem_rd_outstanding,		0x165),
+	NV_CSPMU_EVENT_ATTR_4(ocu, rem_wr_outstanding,		0x169),
+
+	ARM_CSPMU_EVENT_ATTR(gmem_rd_data,			0x16d),
+	ARM_CSPMU_EVENT_ATTR(gmem_rd_access,			0x16e),
+	ARM_CSPMU_EVENT_ATTR(gmem_rd_outstanding,		0x16f),
+	ARM_CSPMU_EVENT_ATTR(gmem_dl_rsp,			0x170),
+	ARM_CSPMU_EVENT_ATTR(gmem_dl_access,			0x171),
+	ARM_CSPMU_EVENT_ATTR(gmem_dl_outstanding,		0x172),
+	ARM_CSPMU_EVENT_ATTR(gmem_wb_data,			0x173),
+	ARM_CSPMU_EVENT_ATTR(gmem_wb_access,			0x174),
+	ARM_CSPMU_EVENT_ATTR(gmem_wb_outstanding,		0x175),
+	ARM_CSPMU_EVENT_ATTR(gmem_ev_rsp,			0x176),
+	ARM_CSPMU_EVENT_ATTR(gmem_ev_access,			0x177),
+	ARM_CSPMU_EVENT_ATTR(gmem_ev_outstanding,		0x178),
+	ARM_CSPMU_EVENT_ATTR(gmem_wr_data,			0x179),
+	ARM_CSPMU_EVENT_ATTR(gmem_wr_outstanding,		0x17a),
+	ARM_CSPMU_EVENT_ATTR(gmem_wr_access,			0x17b),
+
+	NV_CSPMU_EVENT_ATTR_4(socket, wr_data,			0x17c),
+
+	NV_CSPMU_EVENT_ATTR_4(ocu, gmem_wr_data,		0x180),
+	NV_CSPMU_EVENT_ATTR_4(ocu, gmem_wb_data,		0x184),
+	NV_CSPMU_EVENT_ATTR_4(ocu, gmem_wr_access,		0x188),
+	NV_CSPMU_EVENT_ATTR_4(ocu, gmem_wb_outstanding,		0x18c),
+
+	NV_CSPMU_EVENT_ATTR_4(ocu, rem_wr_data,			0x190),
+	NV_CSPMU_EVENT_ATTR_4(ocu, rem_wb_data,			0x194),
+	NV_CSPMU_EVENT_ATTR_4(ocu, rem_wr_access,		0x198),
+	NV_CSPMU_EVENT_ATTR_4(ocu, rem_wb_outstanding,		0x19c),
+
+	ARM_CSPMU_EVENT_ATTR(gmem_wr_total_bytes,		0x1a0),
+	ARM_CSPMU_EVENT_ATTR(remote_socket_wr_total_bytes,	0x1a1),
+	ARM_CSPMU_EVENT_ATTR(remote_socket_rd_data,		0x1a2),
+	ARM_CSPMU_EVENT_ATTR(remote_socket_rd_outstanding,	0x1a3),
+	ARM_CSPMU_EVENT_ATTR(remote_socket_rd_access,		0x1a4),
+
+	ARM_CSPMU_EVENT_ATTR(cmem_rd_data,			0x1a5),
+	ARM_CSPMU_EVENT_ATTR(cmem_rd_access,			0x1a6),
+	ARM_CSPMU_EVENT_ATTR(cmem_rd_outstanding,		0x1a7),
+	ARM_CSPMU_EVENT_ATTR(cmem_dl_rsp,			0x1a8),
+	ARM_CSPMU_EVENT_ATTR(cmem_dl_access,			0x1a9),
+	ARM_CSPMU_EVENT_ATTR(cmem_dl_outstanding,		0x1aa),
+	ARM_CSPMU_EVENT_ATTR(cmem_wb_data,			0x1ab),
+	ARM_CSPMU_EVENT_ATTR(cmem_wb_access,			0x1ac),
+	ARM_CSPMU_EVENT_ATTR(cmem_wb_outstanding,		0x1ad),
+	ARM_CSPMU_EVENT_ATTR(cmem_ev_rsp,			0x1ae),
+	ARM_CSPMU_EVENT_ATTR(cmem_ev_access,			0x1af),
+	ARM_CSPMU_EVENT_ATTR(cmem_ev_outstanding,		0x1b0),
+	ARM_CSPMU_EVENT_ATTR(cmem_wr_data,			0x1b1),
+	ARM_CSPMU_EVENT_ATTR(cmem_wr_outstanding,		0x1b2),
+
+	NV_CSPMU_EVENT_ATTR_4(ocu, cmem_rd_data,		0x1b3),
+	NV_CSPMU_EVENT_ATTR_4(ocu, cmem_rd_access,		0x1b7),
+	NV_CSPMU_EVENT_ATTR_4(ocu, cmem_wb_access,		0x1bb),
+	NV_CSPMU_EVENT_ATTR_4(ocu, cmem_rd_outstanding,		0x1bf),
+	NV_CSPMU_EVENT_ATTR_4(ocu, cmem_wr_outstanding,		0x1c3),
+
+	ARM_CSPMU_EVENT_ATTR(ocu_prb_access,			0x1c7),
+	ARM_CSPMU_EVENT_ATTR(ocu_prb_data,			0x1c8),
+	ARM_CSPMU_EVENT_ATTR(ocu_prb_outstanding,		0x1c9),
+
+	ARM_CSPMU_EVENT_ATTR(cmem_wr_access,			0x1ca),
+
+	NV_CSPMU_EVENT_ATTR_4(ocu, cmem_wr_access,		0x1cb),
+	NV_CSPMU_EVENT_ATTR_4(ocu, cmem_wb_data,		0x1cf),
+	NV_CSPMU_EVENT_ATTR_4(ocu, cmem_wr_data,		0x1d3),
+	NV_CSPMU_EVENT_ATTR_4(ocu, cmem_wb_outstanding,		0x1d7),
+
+	ARM_CSPMU_EVENT_ATTR(cmem_wr_total_bytes,		0x1db),
+
+	ARM_CSPMU_EVENT_ATTR(cycles, ARM_CSPMU_EVT_CYCLES_DEFAULT),
+	NULL,
+};
+
+static struct attribute *mcf_pmu_event_attrs[] = {
+	ARM_CSPMU_EVENT_ATTR(rd_bytes_loc,			0x0),
+	ARM_CSPMU_EVENT_ATTR(rd_bytes_rem,			0x1),
+	ARM_CSPMU_EVENT_ATTR(wr_bytes_loc,			0x2),
+	ARM_CSPMU_EVENT_ATTR(wr_bytes_rem,			0x3),
+	ARM_CSPMU_EVENT_ATTR(total_bytes_loc,			0x4),
+	ARM_CSPMU_EVENT_ATTR(total_bytes_rem,			0x5),
+	ARM_CSPMU_EVENT_ATTR(rd_req_loc,			0x6),
+	ARM_CSPMU_EVENT_ATTR(rd_req_rem,			0x7),
+	ARM_CSPMU_EVENT_ATTR(wr_req_loc,			0x8),
+	ARM_CSPMU_EVENT_ATTR(wr_req_rem,			0x9),
+	ARM_CSPMU_EVENT_ATTR(total_req_loc,			0xa),
+	ARM_CSPMU_EVENT_ATTR(total_req_rem,			0xb),
+	ARM_CSPMU_EVENT_ATTR(rd_cum_outs_loc,			0xc),
+	ARM_CSPMU_EVENT_ATTR(rd_cum_outs_rem,			0xd),
+	ARM_CSPMU_EVENT_ATTR(cycles, ARM_CSPMU_EVT_CYCLES_DEFAULT),
+	NULL,
+};
+
+static struct attribute *generic_pmu_event_attrs[] = {
+	ARM_CSPMU_EVENT_ATTR(cycles, ARM_CSPMU_EVT_CYCLES_DEFAULT),
+	NULL,
+};
+
+static struct attribute *scf_pmu_format_attrs[] = {
+	ARM_CSPMU_FORMAT_EVENT_ATTR,
+	NULL,
+};
+
+static struct attribute *pcie_pmu_format_attrs[] = {
+	ARM_CSPMU_FORMAT_EVENT_ATTR,
+	ARM_CSPMU_FORMAT_ATTR(root_port, "config1:0-9"),
+	NULL,
+};
+
+static struct attribute *nvlink_c2c_pmu_format_attrs[] = {
+	ARM_CSPMU_FORMAT_EVENT_ATTR,
+	NULL,
+};
+
+static struct attribute *cnvlink_pmu_format_attrs[] = {
+	ARM_CSPMU_FORMAT_EVENT_ATTR,
+	ARM_CSPMU_FORMAT_ATTR(rem_socket, "config1:0-3"),
+	NULL,
+};
+
+static struct attribute *generic_pmu_format_attrs[] = {
+	ARM_CSPMU_FORMAT_EVENT_ATTR,
+	ARM_CSPMU_FORMAT_FILTER_ATTR,
+	NULL,
+};
+
+static struct attribute **
+nv_cspmu_get_event_attrs(const struct arm_cspmu *cspmu)
+{
+	const struct nv_cspmu_ctx *ctx = to_nv_cspmu_ctx(cspmu);
+
+	return ctx->event_attr;
+}
+
+static struct attribute **
+nv_cspmu_get_format_attrs(const struct arm_cspmu *cspmu)
+{
+	const struct nv_cspmu_ctx *ctx = to_nv_cspmu_ctx(cspmu);
+
+	return ctx->format_attr;
+}
+
+static const char *
+nv_cspmu_get_name(const struct arm_cspmu *cspmu)
+{
+	const struct nv_cspmu_ctx *ctx = to_nv_cspmu_ctx(cspmu);
+
+	return ctx->name;
+}
+
+static u32 nv_cspmu_event_filter(const struct perf_event *event)
+{
+	const struct nv_cspmu_ctx *ctx =
+		to_nv_cspmu_ctx(to_arm_cspmu(event->pmu));
+
+	if (ctx->filter_mask == 0)
+		return ctx->filter_default_val;
+
+	return event->attr.config1 & ctx->filter_mask;
+}
+
+enum nv_cspmu_name_fmt {
+	NAME_FMT_GENERIC,
+	NAME_FMT_SOCKET
+};
+
+struct nv_cspmu_match {
+	u32 prodid;
+	u32 prodid_mask;
+	u64 filter_mask;
+	u32 filter_default_val;
+	const char *name_pattern;
+	enum nv_cspmu_name_fmt name_fmt;
+	struct attribute **event_attr;
+	struct attribute **format_attr;
+};
+
+static const struct nv_cspmu_match nv_cspmu_match[] = {
+	{
+	  .prodid = 0x103,
+	  .prodid_mask = NV_PRODID_MASK,
+	  .filter_mask = NV_PCIE_FILTER_ID_MASK,
+	  .filter_default_val = NV_PCIE_FILTER_ID_MASK,
+	  .name_pattern = "nvidia_pcie_pmu_%u",
+	  .name_fmt = NAME_FMT_SOCKET,
+	  .event_attr = mcf_pmu_event_attrs,
+	  .format_attr = pcie_pmu_format_attrs
+	},
+	{
+	  .prodid = 0x104,
+	  .prodid_mask = NV_PRODID_MASK,
+	  .filter_mask = 0x0,
+	  .filter_default_val = NV_NVL_C2C_FILTER_ID_MASK,
+	  .name_pattern = "nvidia_nvlink_c2c1_pmu_%u",
+	  .name_fmt = NAME_FMT_SOCKET,
+	  .event_attr = mcf_pmu_event_attrs,
+	  .format_attr = nvlink_c2c_pmu_format_attrs
+	},
+	{
+	  .prodid = 0x105,
+	  .prodid_mask = NV_PRODID_MASK,
+	  .filter_mask = 0x0,
+	  .filter_default_val = NV_NVL_C2C_FILTER_ID_MASK,
+	  .name_pattern = "nvidia_nvlink_c2c0_pmu_%u",
+	  .name_fmt = NAME_FMT_SOCKET,
+	  .event_attr = mcf_pmu_event_attrs,
+	  .format_attr = nvlink_c2c_pmu_format_attrs
+	},
+	{
+	  .prodid = 0x106,
+	  .prodid_mask = NV_PRODID_MASK,
+	  .filter_mask = NV_CNVL_FILTER_ID_MASK,
+	  .filter_default_val = NV_CNVL_FILTER_ID_MASK,
+	  .name_pattern = "nvidia_cnvlink_pmu_%u",
+	  .name_fmt = NAME_FMT_SOCKET,
+	  .event_attr = mcf_pmu_event_attrs,
+	  .format_attr = cnvlink_pmu_format_attrs
+	},
+	{
+	  .prodid = 0x2CF,
+	  .prodid_mask = NV_PRODID_MASK,
+	  .filter_mask = 0x0,
+	  .filter_default_val = 0x0,
+	  .name_pattern = "nvidia_scf_pmu_%u",
+	  .name_fmt = NAME_FMT_SOCKET,
+	  .event_attr = scf_pmu_event_attrs,
+	  .format_attr = scf_pmu_format_attrs
+	},
+	{
+	  .prodid = 0,
+	  .prodid_mask = 0,
+	  .filter_mask = NV_GENERIC_FILTER_ID_MASK,
+	  .filter_default_val = NV_GENERIC_FILTER_ID_MASK,
+	  .name_pattern = "nvidia_uncore_pmu_%u",
+	  .name_fmt = NAME_FMT_GENERIC,
+	  .event_attr = generic_pmu_event_attrs,
+	  .format_attr = generic_pmu_format_attrs
+	},
+};
+
+static char *nv_cspmu_format_name(const struct arm_cspmu *cspmu,
+				  const struct nv_cspmu_match *match)
+{
+	char *name;
+	struct device *dev = cspmu->dev;
+
+	static atomic_t pmu_generic_idx = {0};
+
+	switch (match->name_fmt) {
+	case NAME_FMT_SOCKET: {
+		const int cpu = cpumask_first(&cspmu->associated_cpus);
+		const int socket = cpu_to_node(cpu);
+
+		name = devm_kasprintf(dev, GFP_KERNEL, match->name_pattern,
+				       socket);
+		break;
+	}
+	case NAME_FMT_GENERIC:
+		name = devm_kasprintf(dev, GFP_KERNEL, match->name_pattern,
+				       atomic_fetch_inc(&pmu_generic_idx));
+		break;
+	default:
+		name = NULL;
+		break;
+	}
+
+	return name;
+}
+
+int nv_cspmu_init_ops(struct arm_cspmu *cspmu)
+{
+	u32 prodid;
+	struct nv_cspmu_ctx *ctx;
+	struct device *dev = cspmu->dev;
+	struct arm_cspmu_impl_ops *impl_ops = &cspmu->impl.ops;
+	const struct nv_cspmu_match *match = nv_cspmu_match;
+
+	ctx = devm_kzalloc(dev, sizeof(struct nv_cspmu_ctx), GFP_KERNEL);
+	if (!ctx)
+		return -ENOMEM;
+
+	prodid = FIELD_GET(ARM_CSPMU_PMIIDR_PRODUCTID, cspmu->impl.pmiidr);
+
+	/* Find matching PMU. */
+	for (; match->prodid; match++) {
+		const u32 prodid_mask = match->prodid_mask;
+
+		if ((match->prodid & prodid_mask) == (prodid & prodid_mask))
+			break;
+	}
+
+	ctx->name		= nv_cspmu_format_name(cspmu, match);
+	ctx->filter_mask	= match->filter_mask;
+	ctx->filter_default_val = match->filter_default_val;
+	ctx->event_attr		= match->event_attr;
+	ctx->format_attr	= match->format_attr;
+
+	cspmu->impl.ctx = ctx;
+
+	/* NVIDIA specific callbacks. */
+	impl_ops->event_filter			= nv_cspmu_event_filter;
+	impl_ops->get_event_attrs		= nv_cspmu_get_event_attrs;
+	impl_ops->get_format_attrs		= nv_cspmu_get_format_attrs;
+	impl_ops->get_name			= nv_cspmu_get_name;
+
+	/* Set others to NULL to use default callback. */
+	impl_ops->event_type			= NULL;
+	impl_ops->event_attr_is_visible		= NULL;
+	impl_ops->get_identifier		= NULL;
+	impl_ops->is_cycle_counter_event	= NULL;
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(nv_cspmu_init_ops);
diff --git a/drivers/perf/arm_cspmu/nvidia_cspmu.h b/drivers/perf/arm_cspmu/nvidia_cspmu.h
new file mode 100644
index 000000000000..71e18f0dc50b
--- /dev/null
+++ b/drivers/perf/arm_cspmu/nvidia_cspmu.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ *
+ */
+
+/* Support for NVIDIA specific attributes. */
+
+#ifndef __NVIDIA_CSPMU_H__
+#define __NVIDIA_CSPMU_H__
+
+#include "arm_cspmu.h"
+
+/* Allocate NVIDIA descriptor. */
+int nv_cspmu_init_ops(struct arm_cspmu *cspmu);
+
+#endif /* __NVIDIA_CSPMU_H__ */