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Date: Wed, 25 May 2022 01:48:37 -0500
From: Besar Wicaksono <bwicaksono@...dia.com>
To: <suzuki.poulose@....com>, <robin.murphy@....com>,
<catalin.marinas@....com>, <will@...nel.org>,
<mark.rutland@....com>
CC: <linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <linux-tegra@...r.kernel.org>,
<sudeep.holla@....com>, <thanu.rangarajan@....com>,
<Michael.Williams@....com>, <treding@...dia.com>,
<jonathanh@...dia.com>, <vsethi@...dia.com>,
Besar Wicaksono <bwicaksono@...dia.com>
Subject: [PATCH v3 2/2] perf: coresight_pmu: 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.
Signed-off-by: Besar Wicaksono <bwicaksono@...dia.com>
---
drivers/perf/coresight_pmu/Makefile | 3 +-
.../perf/coresight_pmu/arm_coresight_pmu.c | 4 +
.../coresight_pmu/arm_coresight_pmu_nvidia.c | 312 ++++++++++++++++++
.../coresight_pmu/arm_coresight_pmu_nvidia.h | 17 +
4 files changed, 335 insertions(+), 1 deletion(-)
create mode 100644 drivers/perf/coresight_pmu/arm_coresight_pmu_nvidia.c
create mode 100644 drivers/perf/coresight_pmu/arm_coresight_pmu_nvidia.h
diff --git a/drivers/perf/coresight_pmu/Makefile b/drivers/perf/coresight_pmu/Makefile
index a2a7a5fbbc16..181b1b0dbaa1 100644
--- a/drivers/perf/coresight_pmu/Makefile
+++ b/drivers/perf/coresight_pmu/Makefile
@@ -3,4 +3,5 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_ARM_CORESIGHT_PMU) += \
- arm_coresight_pmu.o
+ arm_coresight_pmu.o \
+ arm_coresight_pmu_nvidia.o
diff --git a/drivers/perf/coresight_pmu/arm_coresight_pmu.c b/drivers/perf/coresight_pmu/arm_coresight_pmu.c
index ba52cc592b2d..12179d029bfd 100644
--- a/drivers/perf/coresight_pmu/arm_coresight_pmu.c
+++ b/drivers/perf/coresight_pmu/arm_coresight_pmu.c
@@ -42,6 +42,7 @@
#include <acpi/processor.h>
#include "arm_coresight_pmu.h"
+#include "arm_coresight_pmu_nvidia.h"
#define PMUNAME "arm_system_pmu"
@@ -396,6 +397,9 @@ struct impl_match {
};
static const struct impl_match impl_match[] = {
+ { .pmiidr = 0x36B,
+ .mask = PMIIDR_IMPLEMENTER_MASK,
+ .impl_init_ops = nv_coresight_init_ops },
{}
};
diff --git a/drivers/perf/coresight_pmu/arm_coresight_pmu_nvidia.c b/drivers/perf/coresight_pmu/arm_coresight_pmu_nvidia.c
new file mode 100644
index 000000000000..54f4eae4c529
--- /dev/null
+++ b/drivers/perf/coresight_pmu/arm_coresight_pmu_nvidia.c
@@ -0,0 +1,312 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES.
+ *
+ */
+
+/* Support for NVIDIA specific attributes. */
+
+#include "arm_coresight_pmu_nvidia.h"
+
+#define NV_MCF_PCIE_PORT_COUNT 10ULL
+#define NV_MCF_PCIE_FILTER_ID_MASK ((1ULL << NV_MCF_PCIE_PORT_COUNT) - 1)
+
+#define NV_MCF_GPU_PORT_COUNT 2ULL
+#define NV_MCF_GPU_FILTER_ID_MASK ((1ULL << NV_MCF_GPU_PORT_COUNT) - 1)
+
+#define NV_MCF_NVLINK_PORT_COUNT 4ULL
+#define NV_MCF_NVLINK_FILTER_ID_MASK ((1ULL << NV_MCF_NVLINK_PORT_COUNT) - 1)
+
+#define PMIIDR_PRODUCTID_MASK 0xFFF
+#define PMIIDR_PRODUCTID_SHIFT 20
+
+#define to_nv_pmu_impl(coresight_pmu) \
+ (container_of(coresight_pmu->impl.ops, struct nv_pmu_impl, ops))
+
+#define CORESIGHT_EVENT_ATTR_4_INNER(_pref, _num, _suff, _config) \
+ CORESIGHT_EVENT_ATTR(_pref##_num##_suff, _config)
+
+#define CORESIGHT_EVENT_ATTR_4(_pref, _suff, _config) \
+ CORESIGHT_EVENT_ATTR_4_INNER(_pref, _0_, _suff, _config), \
+ CORESIGHT_EVENT_ATTR_4_INNER(_pref, _1_, _suff, _config + 1), \
+ CORESIGHT_EVENT_ATTR_4_INNER(_pref, _2_, _suff, _config + 2), \
+ CORESIGHT_EVENT_ATTR_4_INNER(_pref, _3_, _suff, _config + 3)
+
+struct nv_pmu_impl {
+ struct coresight_pmu_impl_ops ops;
+ const char *name;
+ u32 filter_mask;
+ struct attribute **event_attr;
+ struct attribute **format_attr;
+};
+
+static struct attribute *scf_pmu_event_attrs[] = {
+ CORESIGHT_EVENT_ATTR(bus_cycles, 0x1d),
+
+ CORESIGHT_EVENT_ATTR(scf_cache_allocate, 0xF0),
+ CORESIGHT_EVENT_ATTR(scf_cache_refill, 0xF1),
+ CORESIGHT_EVENT_ATTR(scf_cache, 0xF2),
+ CORESIGHT_EVENT_ATTR(scf_cache_wb, 0xF3),
+
+ CORESIGHT_EVENT_ATTR_4(socket, rd_data, 0x101),
+ CORESIGHT_EVENT_ATTR_4(socket, dl_rsp, 0x105),
+ CORESIGHT_EVENT_ATTR_4(socket, wb_data, 0x109),
+ CORESIGHT_EVENT_ATTR_4(socket, ev_rsp, 0x10d),
+ CORESIGHT_EVENT_ATTR_4(socket, prb_data, 0x111),
+
+ CORESIGHT_EVENT_ATTR_4(socket, rd_outstanding, 0x115),
+ CORESIGHT_EVENT_ATTR_4(socket, dl_outstanding, 0x119),
+ CORESIGHT_EVENT_ATTR_4(socket, wb_outstanding, 0x11d),
+ CORESIGHT_EVENT_ATTR_4(socket, wr_outstanding, 0x121),
+ CORESIGHT_EVENT_ATTR_4(socket, ev_outstanding, 0x125),
+ CORESIGHT_EVENT_ATTR_4(socket, prb_outstanding, 0x129),
+
+ CORESIGHT_EVENT_ATTR_4(socket, rd_access, 0x12d),
+ CORESIGHT_EVENT_ATTR_4(socket, dl_access, 0x131),
+ CORESIGHT_EVENT_ATTR_4(socket, wb_access, 0x135),
+ CORESIGHT_EVENT_ATTR_4(socket, wr_access, 0x139),
+ CORESIGHT_EVENT_ATTR_4(socket, ev_access, 0x13d),
+ CORESIGHT_EVENT_ATTR_4(socket, prb_access, 0x141),
+
+ CORESIGHT_EVENT_ATTR_4(ocu, gmem_rd_data, 0x145),
+ CORESIGHT_EVENT_ATTR_4(ocu, gmem_rd_access, 0x149),
+ CORESIGHT_EVENT_ATTR_4(ocu, gmem_wb_access, 0x14d),
+ CORESIGHT_EVENT_ATTR_4(ocu, gmem_rd_outstanding, 0x151),
+ CORESIGHT_EVENT_ATTR_4(ocu, gmem_wr_outstanding, 0x155),
+
+ CORESIGHT_EVENT_ATTR_4(ocu, rem_rd_data, 0x159),
+ CORESIGHT_EVENT_ATTR_4(ocu, rem_rd_access, 0x15d),
+ CORESIGHT_EVENT_ATTR_4(ocu, rem_wb_access, 0x161),
+ CORESIGHT_EVENT_ATTR_4(ocu, rem_rd_outstanding, 0x165),
+ CORESIGHT_EVENT_ATTR_4(ocu, rem_wr_outstanding, 0x169),
+
+ CORESIGHT_EVENT_ATTR(gmem_rd_data, 0x16d),
+ CORESIGHT_EVENT_ATTR(gmem_rd_access, 0x16e),
+ CORESIGHT_EVENT_ATTR(gmem_rd_outstanding, 0x16f),
+ CORESIGHT_EVENT_ATTR(gmem_dl_rsp, 0x170),
+ CORESIGHT_EVENT_ATTR(gmem_dl_access, 0x171),
+ CORESIGHT_EVENT_ATTR(gmem_dl_outstanding, 0x172),
+ CORESIGHT_EVENT_ATTR(gmem_wb_data, 0x173),
+ CORESIGHT_EVENT_ATTR(gmem_wb_access, 0x174),
+ CORESIGHT_EVENT_ATTR(gmem_wb_outstanding, 0x175),
+ CORESIGHT_EVENT_ATTR(gmem_ev_rsp, 0x176),
+ CORESIGHT_EVENT_ATTR(gmem_ev_access, 0x177),
+ CORESIGHT_EVENT_ATTR(gmem_ev_outstanding, 0x178),
+ CORESIGHT_EVENT_ATTR(gmem_wr_data, 0x179),
+ CORESIGHT_EVENT_ATTR(gmem_wr_outstanding, 0x17a),
+ CORESIGHT_EVENT_ATTR(gmem_wr_access, 0x17b),
+
+ CORESIGHT_EVENT_ATTR_4(socket, wr_data, 0x17c),
+
+ CORESIGHT_EVENT_ATTR_4(ocu, gmem_wr_data, 0x180),
+ CORESIGHT_EVENT_ATTR_4(ocu, gmem_wb_data, 0x184),
+ CORESIGHT_EVENT_ATTR_4(ocu, gmem_wr_access, 0x188),
+ CORESIGHT_EVENT_ATTR_4(ocu, gmem_wb_outstanding, 0x18c),
+
+ CORESIGHT_EVENT_ATTR_4(ocu, rem_wr_data, 0x190),
+ CORESIGHT_EVENT_ATTR_4(ocu, rem_wb_data, 0x194),
+ CORESIGHT_EVENT_ATTR_4(ocu, rem_wr_access, 0x198),
+ CORESIGHT_EVENT_ATTR_4(ocu, rem_wb_outstanding, 0x19c),
+
+ CORESIGHT_EVENT_ATTR(gmem_wr_total_bytes, 0x1a0),
+ CORESIGHT_EVENT_ATTR(remote_socket_wr_total_bytes, 0x1a1),
+ CORESIGHT_EVENT_ATTR(remote_socket_rd_data, 0x1a2),
+ CORESIGHT_EVENT_ATTR(remote_socket_rd_outstanding, 0x1a3),
+ CORESIGHT_EVENT_ATTR(remote_socket_rd_access, 0x1a4),
+
+ CORESIGHT_EVENT_ATTR(cmem_rd_data, 0x1a5),
+ CORESIGHT_EVENT_ATTR(cmem_rd_access, 0x1a6),
+ CORESIGHT_EVENT_ATTR(cmem_rd_outstanding, 0x1a7),
+ CORESIGHT_EVENT_ATTR(cmem_dl_rsp, 0x1a8),
+ CORESIGHT_EVENT_ATTR(cmem_dl_access, 0x1a9),
+ CORESIGHT_EVENT_ATTR(cmem_dl_outstanding, 0x1aa),
+ CORESIGHT_EVENT_ATTR(cmem_wb_data, 0x1ab),
+ CORESIGHT_EVENT_ATTR(cmem_wb_access, 0x1ac),
+ CORESIGHT_EVENT_ATTR(cmem_wb_outstanding, 0x1ad),
+ CORESIGHT_EVENT_ATTR(cmem_ev_rsp, 0x1ae),
+ CORESIGHT_EVENT_ATTR(cmem_ev_access, 0x1af),
+ CORESIGHT_EVENT_ATTR(cmem_ev_outstanding, 0x1b0),
+ CORESIGHT_EVENT_ATTR(cmem_wr_data, 0x1b1),
+ CORESIGHT_EVENT_ATTR(cmem_wr_outstanding, 0x1b2),
+
+ CORESIGHT_EVENT_ATTR_4(ocu, cmem_rd_data, 0x1b3),
+ CORESIGHT_EVENT_ATTR_4(ocu, cmem_rd_access, 0x1b7),
+ CORESIGHT_EVENT_ATTR_4(ocu, cmem_wb_access, 0x1bb),
+ CORESIGHT_EVENT_ATTR_4(ocu, cmem_rd_outstanding, 0x1bf),
+ CORESIGHT_EVENT_ATTR_4(ocu, cmem_wr_outstanding, 0x1c3),
+
+ CORESIGHT_EVENT_ATTR(ocu_prb_access, 0x1c7),
+ CORESIGHT_EVENT_ATTR(ocu_prb_data, 0x1c8),
+ CORESIGHT_EVENT_ATTR(ocu_prb_outstanding, 0x1c9),
+
+ CORESIGHT_EVENT_ATTR(cmem_wr_access, 0x1ca),
+
+ CORESIGHT_EVENT_ATTR_4(ocu, cmem_wr_access, 0x1cb),
+ CORESIGHT_EVENT_ATTR_4(ocu, cmem_wb_data, 0x1cf),
+ CORESIGHT_EVENT_ATTR_4(ocu, cmem_wr_data, 0x1d3),
+ CORESIGHT_EVENT_ATTR_4(ocu, cmem_wb_outstanding, 0x1d7),
+
+ CORESIGHT_EVENT_ATTR(cmem_wr_total_bytes, 0x1db),
+
+ CORESIGHT_EVENT_ATTR(cycles, CORESIGHT_PMU_EVT_CYCLES_DEFAULT),
+ NULL,
+};
+
+static struct attribute *mcf_pmu_event_attrs[] = {
+ CORESIGHT_EVENT_ATTR(rd_bytes_loc, 0x0),
+ CORESIGHT_EVENT_ATTR(rd_bytes_rem, 0x1),
+ CORESIGHT_EVENT_ATTR(wr_bytes_loc, 0x2),
+ CORESIGHT_EVENT_ATTR(wr_bytes_rem, 0x3),
+ CORESIGHT_EVENT_ATTR(total_bytes_loc, 0x4),
+ CORESIGHT_EVENT_ATTR(total_bytes_rem, 0x5),
+ CORESIGHT_EVENT_ATTR(rd_req_loc, 0x6),
+ CORESIGHT_EVENT_ATTR(rd_req_rem, 0x7),
+ CORESIGHT_EVENT_ATTR(wr_req_loc, 0x8),
+ CORESIGHT_EVENT_ATTR(wr_req_rem, 0x9),
+ CORESIGHT_EVENT_ATTR(total_req_loc, 0xa),
+ CORESIGHT_EVENT_ATTR(total_req_rem, 0xb),
+ CORESIGHT_EVENT_ATTR(rd_cum_outs_loc, 0xc),
+ CORESIGHT_EVENT_ATTR(rd_cum_outs_rem, 0xd),
+ CORESIGHT_EVENT_ATTR(cycles, CORESIGHT_PMU_EVT_CYCLES_DEFAULT),
+ NULL,
+};
+
+static struct attribute *scf_pmu_format_attrs[] = {
+ CORESIGHT_FORMAT_EVENT_ATTR,
+ NULL,
+};
+
+static struct attribute *mcf_pcie_pmu_format_attrs[] = {
+ CORESIGHT_FORMAT_EVENT_ATTR,
+ CORESIGHT_FORMAT_ATTR(root_port, "config1:0-9"),
+ NULL,
+};
+
+static struct attribute *mcf_gpu_pmu_format_attrs[] = {
+ CORESIGHT_FORMAT_EVENT_ATTR,
+ CORESIGHT_FORMAT_ATTR(gpu, "config1:0-1"),
+ NULL,
+};
+
+static struct attribute *mcf_nvlink_pmu_format_attrs[] = {
+ CORESIGHT_FORMAT_EVENT_ATTR,
+ CORESIGHT_FORMAT_ATTR(socket, "config1:0-3"),
+ NULL,
+};
+
+static struct attribute **
+nv_coresight_pmu_get_event_attrs(const struct coresight_pmu *coresight_pmu)
+{
+ const struct nv_pmu_impl *impl = to_nv_pmu_impl(coresight_pmu);
+
+ return impl->event_attr;
+}
+
+static struct attribute **
+nv_coresight_pmu_get_format_attrs(const struct coresight_pmu *coresight_pmu)
+{
+ const struct nv_pmu_impl *impl = to_nv_pmu_impl(coresight_pmu);
+
+ return impl->format_attr;
+}
+
+static const char *
+nv_coresight_pmu_get_name(const struct coresight_pmu *coresight_pmu)
+{
+ const struct nv_pmu_impl *impl = to_nv_pmu_impl(coresight_pmu);
+
+ return impl->name;
+}
+
+static u32 nv_coresight_pmu_event_filter(const struct perf_event *event)
+{
+ const struct nv_pmu_impl *impl =
+ to_nv_pmu_impl(to_coresight_pmu(event->pmu));
+ return event->attr.config1 & impl->filter_mask;
+}
+
+int nv_coresight_init_ops(struct coresight_pmu *coresight_pmu)
+{
+ u32 product_id;
+ struct device *dev;
+ struct nv_pmu_impl *impl;
+ static atomic_t pmu_idx = {0};
+
+ dev = coresight_pmu->dev;
+
+ impl = devm_kzalloc(dev, sizeof(struct nv_pmu_impl), GFP_KERNEL);
+ if (!impl)
+ return -ENOMEM;
+
+ product_id = (coresight_pmu->impl.pmiidr >> PMIIDR_PRODUCTID_SHIFT) &
+ PMIIDR_PRODUCTID_MASK;
+
+ switch (product_id) {
+ case 0x103:
+ impl->name =
+ devm_kasprintf(dev, GFP_KERNEL,
+ "nvidia_mcf_pcie_pmu_%u",
+ coresight_pmu->apmt_node->proc_affinity);
+ impl->filter_mask = NV_MCF_PCIE_FILTER_ID_MASK;
+ impl->event_attr = mcf_pmu_event_attrs;
+ impl->format_attr = mcf_pcie_pmu_format_attrs;
+ break;
+ case 0x104:
+ impl->name =
+ devm_kasprintf(dev, GFP_KERNEL,
+ "nvidia_mcf_gpuvir_pmu_%u",
+ coresight_pmu->apmt_node->proc_affinity);
+ impl->filter_mask = NV_MCF_GPU_FILTER_ID_MASK;
+ impl->event_attr = mcf_pmu_event_attrs;
+ impl->format_attr = mcf_gpu_pmu_format_attrs;
+ break;
+ case 0x105:
+ impl->name =
+ devm_kasprintf(dev, GFP_KERNEL,
+ "nvidia_mcf_gpu_pmu_%u",
+ coresight_pmu->apmt_node->proc_affinity);
+ impl->filter_mask = NV_MCF_GPU_FILTER_ID_MASK;
+ impl->event_attr = mcf_pmu_event_attrs;
+ impl->format_attr = mcf_gpu_pmu_format_attrs;
+ break;
+ case 0x106:
+ impl->name =
+ devm_kasprintf(dev, GFP_KERNEL,
+ "nvidia_mcf_nvlink_pmu_%u",
+ coresight_pmu->apmt_node->proc_affinity);
+ impl->filter_mask = NV_MCF_NVLINK_FILTER_ID_MASK;
+ impl->event_attr = mcf_pmu_event_attrs;
+ impl->format_attr = mcf_nvlink_pmu_format_attrs;
+ break;
+ case 0x2CF:
+ impl->name =
+ devm_kasprintf(dev, GFP_KERNEL, "nvidia_scf_pmu_%u",
+ coresight_pmu->apmt_node->proc_affinity);
+ impl->filter_mask = 0x0;
+ impl->event_attr = scf_pmu_event_attrs;
+ impl->format_attr = scf_pmu_format_attrs;
+ break;
+ default:
+ impl->name =
+ devm_kasprintf(dev, GFP_KERNEL, "nvidia_uncore_pmu_%u",
+ atomic_fetch_inc(&pmu_idx));
+ impl->filter_mask = CORESIGHT_FILTER_MASK;
+ impl->event_attr = coresight_pmu_get_event_attrs(coresight_pmu);
+ impl->format_attr =
+ coresight_pmu_get_format_attrs(coresight_pmu);
+ break;
+ }
+
+ impl->ops.get_event_attrs = nv_coresight_pmu_get_event_attrs;
+ impl->ops.get_format_attrs = nv_coresight_pmu_get_format_attrs;
+ impl->ops.get_identifier = coresight_pmu_get_identifier;
+ impl->ops.get_name = nv_coresight_pmu_get_name;
+ impl->ops.event_filter = nv_coresight_pmu_event_filter;
+ impl->ops.event_type = coresight_pmu_event_type;
+ impl->ops.event_attr_is_visible = coresight_pmu_event_attr_is_visible;
+ impl->ops.is_cc_event = coresight_pmu_is_cc_event;
+
+ coresight_pmu->impl.ops = &impl->ops;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(nv_coresight_init_ops);
diff --git a/drivers/perf/coresight_pmu/arm_coresight_pmu_nvidia.h b/drivers/perf/coresight_pmu/arm_coresight_pmu_nvidia.h
new file mode 100644
index 000000000000..3c81c16c14f4
--- /dev/null
+++ b/drivers/perf/coresight_pmu/arm_coresight_pmu_nvidia.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES.
+ *
+ */
+
+/* Support for NVIDIA specific attributes. */
+
+#ifndef __ARM_CORESIGHT_PMU_NVIDIA_H__
+#define __ARM_CORESIGHT_PMU_NVIDIA_H__
+
+#include "arm_coresight_pmu.h"
+
+/* Allocate NVIDIA descriptor. */
+int nv_coresight_init_ops(struct coresight_pmu *coresight_pmu);
+
+#endif /* __ARM_CORESIGHT_PMU_NVIDIA_H__ */
--
2.17.1
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