!805 Add support for HiSilicon UC/H60PA/PAv3 PMU driver

Merge Pull Request from: @hejunhao3 
 
1. Compared with the PAv2 PMU, the PAv3 PMU has different event
IDs and definitions. The version number in the version register
is used to distinguish the event IDs and definitions in the driver.
2. The H60PA PMU and PA are two different devices. The H60PA PMU
supports higher bandwidth, and the PA PMU delay is relatively low.
Different HIDs are used to distinguish the delay.
3. Each cluster is integrated with a unified cache (UC) PMU, which
provides consistency between NUMA and UMA domains. It sits between
L2 and the memory system. 
 
Link:https://gitee.com/openeuler/kernel/pulls/805 

Reviewed-by: Jialin Zhang <zhangjialin11@huawei.com> 
Reviewed-by: Yang Shen <shenyang39@huawei.com> 
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com> 

drivers/perf/hisilicon/Makefile

 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_HISI_PMU) += hisi_uncore_pmu.o hisi_uncore_l3c_pmu.o \
 			  hisi_uncore_hha_pmu.o hisi_uncore_ddrc_pmu.o hisi_uncore_sllc_pmu.o \
-			  hisi_uncore_pa_pmu.o hisi_uncore_cpa_pmu.o
+			  hisi_uncore_pa_pmu.o hisi_uncore_cpa_pmu.o hisi_uncore_uc_pmu.o
 
 obj-$(CONFIG_HISI_PCIE_PMU) += hisi_pcie_pmu.o
 obj-$(CONFIG_HNS3_PMU) += hns3_pmu.o

drivers/perf/hisilicon/hisi_uncore_cpa_pmu.c

@@ -319,21 +319,7 @@ static int hisi_cpa_pmu_probe(struct platform_device *pdev)
 	if (!name)
 		return -ENOMEM;
 
-	cpa_pmu->pmu = (struct pmu) {
-		.name		= name,
-		.module		= THIS_MODULE,
-		.task_ctx_nr	= perf_invalid_context,
-		.event_init	= hisi_uncore_pmu_event_init,
-		.pmu_enable	= hisi_uncore_pmu_enable,
-		.pmu_disable	= hisi_uncore_pmu_disable,
-		.add		= hisi_uncore_pmu_add,
-		.del		= hisi_uncore_pmu_del,
-		.start		= hisi_uncore_pmu_start,
-		.stop		= hisi_uncore_pmu_stop,
-		.read		= hisi_uncore_pmu_read,
-		.attr_groups	= cpa_pmu->pmu_events.attr_groups,
-		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
-	};
+	hisi_pmu_init(cpa_pmu, THIS_MODULE);
 
 	/* Power Management should be disabled before using CPA PMU. */
 	hisi_cpa_pmu_disable_pm(cpa_pmu);

drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c

@@ -499,13 +499,6 @@ static int hisi_ddrc_pmu_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	ret = cpuhp_state_add_instance(CPUHP_AP_PERF_ARM_HISI_DDRC_ONLINE,
-				       &ddrc_pmu->node);
-	if (ret) {
-		dev_err(&pdev->dev, "Error %d registering hotplug;\n", ret);
-		return ret;
-	}
-
 	if (ddrc_pmu->identifier >= HISI_PMU_V2)
 		name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
 				      "hisi_sccl%u_ddrc%u_%u",
@@ -516,21 +509,17 @@ static int hisi_ddrc_pmu_probe(struct platform_device *pdev)
 				      "hisi_sccl%u_ddrc%u", ddrc_pmu->sccl_id,
 				      ddrc_pmu->index_id);
 
-	ddrc_pmu->pmu = (struct pmu) {
-		.name		= name,
-		.module		= THIS_MODULE,
-		.task_ctx_nr	= perf_invalid_context,
-		.event_init	= hisi_uncore_pmu_event_init,
-		.pmu_enable	= hisi_uncore_pmu_enable,
-		.pmu_disable	= hisi_uncore_pmu_disable,
-		.add		= hisi_uncore_pmu_add,
-		.del		= hisi_uncore_pmu_del,
-		.start		= hisi_uncore_pmu_start,
-		.stop		= hisi_uncore_pmu_stop,
-		.read		= hisi_uncore_pmu_read,
-		.attr_groups	= ddrc_pmu->pmu_events.attr_groups,
-		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
-	};
+	if (!name)
+		return -ENOMEM;
+
+	ret = cpuhp_state_add_instance(CPUHP_AP_PERF_ARM_HISI_DDRC_ONLINE,
+				       &ddrc_pmu->node);
+	if (ret) {
+		dev_err(&pdev->dev, "Error %d registering hotplug;\n", ret);
+		return ret;
+	}
+
+	hisi_pmu_init(ddrc_pmu, THIS_MODULE);
 
 	ret = perf_pmu_register(&ddrc_pmu->pmu, name, -1);
 	if (ret) {

drivers/perf/hisilicon/hisi_uncore_hha_pmu.c

@@ -510,6 +510,11 @@ static int hisi_hha_pmu_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "hisi_sccl%u_hha%u",
+			      hha_pmu->sccl_id, hha_pmu->index_id);
+	if (!name)
+		return -ENOMEM;
+
 	ret = cpuhp_state_add_instance(CPUHP_AP_PERF_ARM_HISI_HHA_ONLINE,
 				       &hha_pmu->node);
 	if (ret) {
@@ -517,23 +522,7 @@ static int hisi_hha_pmu_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "hisi_sccl%u_hha%u",
-			      hha_pmu->sccl_id, hha_pmu->index_id);
-	hha_pmu->pmu = (struct pmu) {
-		.name		= name,
-		.module		= THIS_MODULE,
-		.task_ctx_nr	= perf_invalid_context,
-		.event_init	= hisi_uncore_pmu_event_init,
-		.pmu_enable	= hisi_uncore_pmu_enable,
-		.pmu_disable	= hisi_uncore_pmu_disable,
-		.add		= hisi_uncore_pmu_add,
-		.del		= hisi_uncore_pmu_del,
-		.start		= hisi_uncore_pmu_start,
-		.stop		= hisi_uncore_pmu_stop,
-		.read		= hisi_uncore_pmu_read,
-		.attr_groups	= hha_pmu->pmu_events.attr_groups,
-		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
-	};
+	hisi_pmu_init(hha_pmu, THIS_MODULE);
 
 	ret = perf_pmu_register(&hha_pmu->pmu, name, -1);
 	if (ret) {

drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c

@@ -544,6 +544,11 @@ static int hisi_l3c_pmu_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "hisi_sccl%u_l3c%u",
+			      l3c_pmu->sccl_id, l3c_pmu->ccl_id);
+	if (!name)
+		return -ENOMEM;
+
 	ret = cpuhp_state_add_instance(CPUHP_AP_PERF_ARM_HISI_L3_ONLINE,
 				       &l3c_pmu->node);
 	if (ret) {
@@ -551,27 +556,7 @@ static int hisi_l3c_pmu_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	/*
-	 * CCL_ID is used to identify the L3C in the same SCCL which was
-	 * used _UID by mistake.
-	 */
-	name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "hisi_sccl%u_l3c%u",
-			      l3c_pmu->sccl_id, l3c_pmu->ccl_id);
-	l3c_pmu->pmu = (struct pmu) {
-		.name		= name,
-		.module		= THIS_MODULE,
-		.task_ctx_nr	= perf_invalid_context,
-		.event_init	= hisi_uncore_pmu_event_init,
-		.pmu_enable	= hisi_uncore_pmu_enable,
-		.pmu_disable	= hisi_uncore_pmu_disable,
-		.add		= hisi_uncore_pmu_add,
-		.del		= hisi_uncore_pmu_del,
-		.start		= hisi_uncore_pmu_start,
-		.stop		= hisi_uncore_pmu_stop,
-		.read		= hisi_uncore_pmu_read,
-		.attr_groups	= l3c_pmu->pmu_events.attr_groups,
-		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
-	};
+	hisi_pmu_init(l3c_pmu, THIS_MODULE);
 
 	ret = perf_pmu_register(&l3c_pmu->pmu, name, -1);
 	if (ret) {

drivers/perf/hisilicon/hisi_uncore_pa_pmu.c

@@ -22,9 +22,14 @@
 #define PA_TT_CTRL			0x1c08
 #define PA_TGTID_CTRL			0x1c14
 #define PA_SRCID_CTRL			0x1c18
+/* H32 PA interrupt registers */
 #define PA_INT_MASK			0x1c70
 #define PA_INT_STATUS			0x1c78
 #define PA_INT_CLEAR			0x1c7c
+/* H60 PA interrupt registers */
+#define H60PA_INT_STATUS		0x1c70
+#define H60PA_INT_MASK			0x1c74
+/* End interrupt registers */
 #define PA_EVENT_TYPE0			0x1c80
 #define PA_PMU_VERSION			0x1cf0
 #define PA_EVENT_CNT0_L			0x1d00
@@ -46,6 +51,12 @@ HISI_PMU_EVENT_ATTR_EXTRACTOR(srcid_cmd, config1, 32, 22);
 HISI_PMU_EVENT_ATTR_EXTRACTOR(srcid_msk, config1, 43, 33);
 HISI_PMU_EVENT_ATTR_EXTRACTOR(tracetag_en, config1, 44, 44);
 
+struct hisi_pa_pmu_int_regs {
+	u32 mask;
+	u32 clear;
+	u32 status;
+};
+
 static void hisi_pa_pmu_enable_tracetag(struct perf_event *event)
 {
 	struct hisi_pmu *pa_pmu = to_hisi_pmu(event->pmu);
@@ -219,44 +230,51 @@ static void hisi_pa_pmu_disable_counter(struct hisi_pmu *pa_pmu,
 static void hisi_pa_pmu_enable_counter_int(struct hisi_pmu *pa_pmu,
 					   struct hw_perf_event *hwc)
 {
+	struct hisi_pa_pmu_int_regs *regs = pa_pmu->dev_info->present;
 	u32 val;
 
 	/* Write 0 to enable interrupt */
-	val = readl(pa_pmu->base + PA_INT_MASK);
+	val = readl(pa_pmu->base + regs->mask);
 	val &= ~(1 << hwc->idx);
-	writel(val, pa_pmu->base + PA_INT_MASK);
+	writel(val, pa_pmu->base + regs->mask);
 }
 
 static void hisi_pa_pmu_disable_counter_int(struct hisi_pmu *pa_pmu,
 					    struct hw_perf_event *hwc)
 {
+	struct hisi_pa_pmu_int_regs *regs = pa_pmu->dev_info->present;
 	u32 val;
 
 	/* Write 1 to mask interrupt */
-	val = readl(pa_pmu->base + PA_INT_MASK);
+	val = readl(pa_pmu->base + regs->mask);
 	val |= 1 << hwc->idx;
-	writel(val, pa_pmu->base + PA_INT_MASK);
+	writel(val, pa_pmu->base + regs->mask);
 }
 
 static u32 hisi_pa_pmu_get_int_status(struct hisi_pmu *pa_pmu)
 {
-	return readl(pa_pmu->base + PA_INT_STATUS);
+	struct hisi_pa_pmu_int_regs *regs = pa_pmu->dev_info->present;
+
+	return readl(pa_pmu->base + regs->status);
 }
 
 static void hisi_pa_pmu_clear_int_status(struct hisi_pmu *pa_pmu, int idx)
 {
-	writel(1 << idx, pa_pmu->base + PA_INT_CLEAR);
-}
+	struct hisi_pa_pmu_int_regs *regs = pa_pmu->dev_info->present;
 
-static const struct acpi_device_id hisi_pa_pmu_acpi_match[] = {
-	{ "HISI0273", },
-	{}
-};
-MODULE_DEVICE_TABLE(acpi, hisi_pa_pmu_acpi_match);
+	writel(1 << idx, pa_pmu->base + regs->clear);
+}
 
 static int hisi_pa_pmu_init_data(struct platform_device *pdev,
 				   struct hisi_pmu *pa_pmu)
 {
+	const struct hisi_pmu_dev_info *pa_pmu_info;
+	int idx;
+
+	pa_pmu_info = device_get_match_data(&pdev->dev);
+	if (!pa_pmu_info)
+		return -ENODEV;
+
 	/*
 	 * As PA PMU is in a SICL, use the SICL_ID and the index ID
 	 * to identify the PA PMU.
@@ -284,6 +302,11 @@ static int hisi_pa_pmu_init_data(struct platform_device *pdev,
 
 	pa_pmu->identifier = readl(pa_pmu->base + PA_PMU_VERSION);
 
+	idx = hisi_uncore_pmu_ver2idx(pa_pmu);
+	pa_pmu->dev_info = &pa_pmu_info[idx];
+	if (!pa_pmu->dev_info || !pa_pmu->dev_info->name)
+		return -EINVAL;
+
 	return 0;
 }
 
@@ -314,6 +337,32 @@ static const struct attribute_group hisi_pa_pmu_v2_events_group = {
 	.attrs = hisi_pa_pmu_v2_events_attr,
 };
 
+static struct attribute *hisi_pa_pmu_v3_events_attr[] = {
+	HISI_PMU_EVENT_ATTR(tx_req,	0x0),
+	HISI_PMU_EVENT_ATTR(tx_dat,	0x1),
+	HISI_PMU_EVENT_ATTR(tx_snp,	0x2),
+	HISI_PMU_EVENT_ATTR(rx_req,	0x7),
+	HISI_PMU_EVENT_ATTR(rx_dat,	0x8),
+	HISI_PMU_EVENT_ATTR(rx_snp,	0x9),
+	NULL
+};
+
+static const struct attribute_group hisi_pa_pmu_v3_events_group = {
+	.name = "events",
+	.attrs = hisi_pa_pmu_v3_events_attr,
+};
+
+static struct attribute *hisi_h60pa_pmu_events_attr[] = {
+	HISI_PMU_EVENT_ATTR(rx_flit,	0x50),
+	HISI_PMU_EVENT_ATTR(tx_flit,	0x65),
+	NULL
+};
+
+static const struct attribute_group hisi_h60pa_pmu_events_group = {
+	.name = "events",
+	.attrs = hisi_h60pa_pmu_events_attr,
+};
+
 static DEVICE_ATTR(cpumask, 0444, hisi_cpumask_sysfs_show, NULL);
 
 static struct attribute *hisi_pa_pmu_cpumask_attrs[] = {
@@ -333,7 +382,7 @@ static struct attribute *hisi_pa_pmu_identifier_attrs[] = {
 	NULL
 };
 
-static struct attribute_group hisi_pa_pmu_identifier_group = {
+static const struct attribute_group hisi_pa_pmu_identifier_group = {
 	.attrs = hisi_pa_pmu_identifier_attrs,
 };
 
@@ -345,6 +394,57 @@ static const struct attribute_group *hisi_pa_pmu_v2_attr_groups[] = {
 	NULL
 };
 
+static const struct attribute_group *hisi_pa_pmu_v3_attr_groups[] = {
+	&hisi_pa_pmu_v2_format_group,
+	&hisi_pa_pmu_v3_events_group,
+	&hisi_pa_pmu_cpumask_attr_group,
+	&hisi_pa_pmu_identifier_group,
+	NULL
+};
+
+static struct hisi_pa_pmu_int_regs hisi_pa_pmu_regs = {
+	.mask = PA_INT_MASK,
+	.clear = PA_INT_CLEAR,
+	.status = PA_INT_STATUS,
+};
+
+static const struct hisi_pmu_dev_info hisi_h32pa[] = {
+	[1] = {
+		.name = "pa",
+		.attr_groups = hisi_pa_pmu_v2_attr_groups,
+		.present = &hisi_pa_pmu_regs,
+	},
+	[2] = {
+		.name = "pa",
+		.attr_groups = hisi_pa_pmu_v3_attr_groups,
+		.present = &hisi_pa_pmu_regs,
+	},
+	{}
+};
+
+static const struct attribute_group *hisi_h60pa_pmu_attr_groups[] = {
+	&hisi_pa_pmu_v2_format_group,
+	&hisi_h60pa_pmu_events_group,
+	&hisi_pa_pmu_cpumask_attr_group,
+	&hisi_pa_pmu_identifier_group,
+	NULL
+};
+
+static struct hisi_pa_pmu_int_regs hisi_h60pa_pmu_regs = {
+	.mask = H60PA_INT_MASK,
+	.clear = H60PA_INT_STATUS, /* Clear on write */
+	.status = H60PA_INT_STATUS,
+};
+
+static const struct hisi_pmu_dev_info hisi_h60pa[] = {
+	[1] = {
+		.name = "h60pa",
+		.attr_groups = hisi_h60pa_pmu_attr_groups,
+		.present = &hisi_h60pa_pmu_regs,
+	},
+	{}
+};
+
 static const struct hisi_uncore_ops hisi_uncore_pa_ops = {
 	.write_evtype		= hisi_pa_pmu_write_evtype,
 	.get_event_idx		= hisi_uncore_pmu_get_event_idx,
@@ -375,7 +475,7 @@ static int hisi_pa_pmu_dev_probe(struct platform_device *pdev,
 	if (ret)
 		return ret;
 
-	pa_pmu->pmu_events.attr_groups = hisi_pa_pmu_v2_attr_groups;
+	pa_pmu->pmu_events.attr_groups = pa_pmu->dev_info->attr_groups;
 	pa_pmu->num_counters = PA_NR_COUNTERS;
 	pa_pmu->ops = &hisi_uncore_pa_ops;
 	pa_pmu->check_event = 0xB0;
@@ -400,8 +500,9 @@ static int hisi_pa_pmu_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "hisi_sicl%u_pa%u",
-			      pa_pmu->sicl_id, pa_pmu->index_id);
+	name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "hisi_sicl%d_%s%u",
+			      pa_pmu->sicl_id, pa_pmu->dev_info->name,
+			      pa_pmu->index_id);
 	if (!name)
 		return -ENOMEM;
 
@@ -412,21 +513,7 @@ static int hisi_pa_pmu_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	pa_pmu->pmu = (struct pmu) {
-		.module		= THIS_MODULE,
-		.task_ctx_nr	= perf_invalid_context,
-		.event_init	= hisi_uncore_pmu_event_init,
-		.pmu_enable	= hisi_uncore_pmu_enable,
-		.pmu_disable	= hisi_uncore_pmu_disable,
-		.add		= hisi_uncore_pmu_add,
-		.del		= hisi_uncore_pmu_del,
-		.start		= hisi_uncore_pmu_start,
-		.stop		= hisi_uncore_pmu_stop,
-		.read		= hisi_uncore_pmu_read,
-		.attr_groups    = pa_pmu->pmu_events.attr_groups,
-		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
-	};
-
+	hisi_pmu_init(pa_pmu, THIS_MODULE);
 	ret = perf_pmu_register(&pa_pmu->pmu, name, -1);
 	if (ret) {
 		dev_err(pa_pmu->dev, "PMU register failed, ret = %d\n", ret);
@@ -449,6 +536,13 @@ static int hisi_pa_pmu_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct acpi_device_id hisi_pa_pmu_acpi_match[] = {
+	{ "HISI0273", (kernel_ulong_t)hisi_h32pa },
+	{ "HISI0274", (kernel_ulong_t)hisi_h60pa },
+	{}
+};
+MODULE_DEVICE_TABLE(acpi, hisi_pa_pmu_acpi_match);
+
 static struct platform_driver hisi_pa_pmu_driver = {
 	.driver = {
 		.name = "hisi_pa_pmu",

drivers/perf/hisilicon/hisi_uncore_pmu.c

@@ -20,7 +20,6 @@
 
 #include "hisi_uncore_pmu.h"
 
-#define HISI_GET_EVENTID(ev) (ev->hw.config_base & 0xff)
 #define HISI_MAX_PERIOD(nr) (GENMASK_ULL((nr) - 1, 0))
 
 /*
@@ -226,6 +225,10 @@ int hisi_uncore_pmu_event_init(struct perf_event *event)
 	hwc->idx		= -1;
 	hwc->config_base	= event->attr.config;
 
+	if (hisi_pmu->ops->check_format)
+		if (hisi_pmu->ops->check_format(event))
+			return -EINVAL;
+
 	/* Enforce to use the same CPU for all events in this PMU */
 	event->cpu = hisi_pmu->on_cpu;
 
@@ -537,4 +540,23 @@ int hisi_uncore_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node)
 }
 EXPORT_SYMBOL_GPL(hisi_uncore_pmu_offline_cpu);
 
+void hisi_pmu_init(struct hisi_pmu *hisi_pmu, struct module *module)
+{
+	struct pmu *pmu = &hisi_pmu->pmu;
+
+	pmu->module             = module;
+	pmu->task_ctx_nr        = perf_invalid_context;
+	pmu->event_init         = hisi_uncore_pmu_event_init;
+	pmu->pmu_enable         = hisi_uncore_pmu_enable;
+	pmu->pmu_disable        = hisi_uncore_pmu_disable;
+	pmu->add                = hisi_uncore_pmu_add;
+	pmu->del                = hisi_uncore_pmu_del;
+	pmu->start              = hisi_uncore_pmu_start;
+	pmu->stop               = hisi_uncore_pmu_stop;
+	pmu->read               = hisi_uncore_pmu_read;
+	pmu->attr_groups        = hisi_pmu->pmu_events.attr_groups;
+	pmu->capabilities       = PERF_PMU_CAP_NO_EXCLUDE;
+}
+EXPORT_SYMBOL_GPL(hisi_pmu_init);
+
 MODULE_LICENSE("GPL v2");

drivers/perf/hisilicon/hisi_uncore_pmu.h

@@ -23,7 +23,6 @@
 #undef pr_fmt
 #define pr_fmt(fmt)     "hisi_pmu: " fmt
 
-#define HISI_PMU_V2		0x30
 #define HISI_MAX_COUNTERS 0x10
 #define to_hisi_pmu(p)	(container_of(p, struct hisi_pmu, pmu))
 
@@ -43,9 +42,22 @@
 		return FIELD_GET(GENMASK_ULL(hi, lo), event->attr.config);  \
 	}
 
+enum hisi_pmu_version {
+	HISI_PMU_V1,
+	HISI_PMU_V2 = 0x30,
+	HISI_PMU_V3 = 0x40,
+	HISI_PMU_MAX
+};
+
+#define HISI_GET_EVENTID(ev) (ev->hw.config_base & 0xff)
+
+#define HISI_PMU_EVTYPE_BITS		8
+#define HISI_PMU_EVTYPE_SHIFT(idx)	((idx) % 4 * HISI_PMU_EVTYPE_BITS)
+
 struct hisi_pmu;
 
 struct hisi_uncore_ops {
+	int (*check_format)(struct perf_event *event);
 	void (*write_evtype)(struct hisi_pmu *, int, u32);
 	int (*get_event_idx)(struct perf_event *);
 	u64 (*read_counter)(struct hisi_pmu *, struct hw_perf_event *);
@@ -62,6 +74,13 @@ struct hisi_uncore_ops {
 	void (*disable_filter)(struct perf_event *event);
 };
 
+/* Describes the HISI PMU chip features information */
+struct hisi_pmu_dev_info {
+	const char *name;
+	const struct attribute_group **attr_groups;
+	void *present;
+};
+
 struct hisi_pmu_hwevents {
 	struct perf_event *hw_events[HISI_MAX_COUNTERS];
 	DECLARE_BITMAP(used_mask, HISI_MAX_COUNTERS);
@@ -72,6 +91,7 @@ struct hisi_pmu_hwevents {
 struct hisi_pmu {
 	struct pmu pmu;
 	const struct hisi_uncore_ops *ops;
+	const struct hisi_pmu_dev_info *dev_info;
 	struct hisi_pmu_hwevents pmu_events;
 	/* associated_cpus: All CPUs associated with the PMU */
 	cpumask_t associated_cpus;
@@ -92,7 +112,7 @@ struct hisi_pmu {
 	int counter_bits;
 	/* check event code range */
 	int check_event;
-	u32 identifier;
+	enum hisi_pmu_version identifier;
 };
 
 int hisi_uncore_pmu_get_event_idx(struct perf_event *event);
@@ -121,4 +141,23 @@ ssize_t hisi_uncore_pmu_identifier_attr_show(struct device *dev,
 int hisi_uncore_pmu_init_irq(struct hisi_pmu *hisi_pmu,
 			     struct platform_device *pdev);
 
+void hisi_pmu_init(struct hisi_pmu *hisi_pmu, struct module *module);
+
+int hisi_uncore_pmu_ver2idx(struct hisi_pmu *pmu)
+{
+	int idx;
+
+	switch (pmu->identifier) {
+	case HISI_PMU_V1:
+		idx = 0; break;
+	case HISI_PMU_V2:
+		idx = 1; break;
+	case HISI_PMU_V3:
+	/* When running on later version, returns the largest supported version */
+	default:
+		idx = 2;
+	}
+
+	return idx;
+}
 #endif /* __HISI_UNCORE_PMU_H__ */

drivers/perf/hisilicon/hisi_uncore_sllc_pmu.c

@@ -445,20 +445,7 @@ static int hisi_sllc_pmu_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	sllc_pmu->pmu = (struct pmu) {
-		.module		= THIS_MODULE,
-		.task_ctx_nr	= perf_invalid_context,
-		.event_init	= hisi_uncore_pmu_event_init,
-		.pmu_enable	= hisi_uncore_pmu_enable,
-		.pmu_disable	= hisi_uncore_pmu_disable,
-		.add		= hisi_uncore_pmu_add,
-		.del		= hisi_uncore_pmu_del,
-		.start		= hisi_uncore_pmu_start,
-		.stop		= hisi_uncore_pmu_stop,
-		.read		= hisi_uncore_pmu_read,
-		.attr_groups    = sllc_pmu->pmu_events.attr_groups,
-		.capabilities	= PERF_PMU_CAP_NO_EXCLUDE,
-	};
+	hisi_pmu_init(sllc_pmu, THIS_MODULE);
 
 	ret = perf_pmu_register(&sllc_pmu->pmu, name, -1);
 	if (ret) {

drivers/perf/hisilicon/hisi_uncore_uc_pmu.c

+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * HiSilicon SoC UC (unified cache) uncore Hardware event counters support
+ *
+ * Copyright (C) 2023 HiSilicon Limited
+ *
+ * This code is based on the uncore PMUs like arm-cci and arm-ccn.
+ */
+#include <linux/cpuhotplug.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/list.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
+
+#include "hisi_uncore_pmu.h"
+
+/* Dynamic CPU hotplug state used by UC PMU */
+static enum cpuhp_state hisi_uc_pmu_online;
+
+/* UC register definition */
+#define HISI_UC_INT_MASK_REG		0x0800
+#define HISI_UC_INT_STS_REG		0x0808
+#define HISI_UC_INT_CLEAR_REG		0x080c
+#define HISI_UC_TRACETAG_CTRL_REG	0x1b2c
+#define HISI_UC_TRACETAG_REQ_MSK	GENMASK(9, 7)
+#define HISI_UC_TRACETAG_MARK_EN	BIT(0)
+#define HISI_UC_TRACETAG_REQ_EN		(HISI_UC_TRACETAG_MARK_EN | BIT(2))
+#define HISI_UC_TRACETAG_SRCID_EN	BIT(3)
+#define HISI_UC_SRCID_CTRL_REG		0x1b40
+#define HISI_UC_SRCID_MSK		GENMASK(14, 1)
+#define HISI_UC_EVENT_CTRL_REG		0x1c00
+#define HISI_UC_EVENT_TRACETAG_EN	BIT(29)
+#define HISI_UC_EVENT_URING_MSK		GENMASK(28, 27)
+#define HISI_UC_EVENT_GLB_EN		BIT(26)
+#define HISI_UC_VERSION_REG		0x1cf0
+#define HISI_UC_EVTYPE0_REG		0x1d00
+#define HISI_UC_EVTYPE_REG(n)		(HISI_UC_EVTYPE0_REG + (n) * 4)
+#define HISI_UC_EVTYPE_MASK		GENMASK(7, 0)
+#define HISI_UC_CNTR0_REG		0x1e00
+#define HISI_UC_CNTR_REG(n)		(HISI_UC_CNTR0_REG + (n) * 8)
+
+#define HISI_UC_NR_COUNTERS		0x8
+#define HISI_UC_V2_NR_EVENTS		0xFF
+#define HISI_UC_CNTR_REG_BITS		64
+
+#define HISI_UC_RD_REQ_TRACETAG		0x4
+#define HISI_UC_URING_EVENT_MIN		0x47
+#define HISI_UC_URING_EVENT_MAX		0x59
+
+HISI_PMU_EVENT_ATTR_EXTRACTOR(rd_req_en, config1, 0, 0);
+HISI_PMU_EVENT_ATTR_EXTRACTOR(uring_channel, config1, 5, 4);
+HISI_PMU_EVENT_ATTR_EXTRACTOR(srcid, config1, 19, 6);
+HISI_PMU_EVENT_ATTR_EXTRACTOR(srcid_en, config1, 20, 20);
+
+static int hisi_uc_pmu_check_format(struct perf_event *event)
+{
+	struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+
+	if (hisi_get_srcid_en(event) && !hisi_get_rd_req_en(event)) {
+		dev_err(uc_pmu->dev,
+			"Failed to set srcid: depending on read request enabled!\n");
+		return -EINVAL;
+	}
+
+	if (!hisi_get_uring_channel(event))
+		return 0;
+
+	if ((HISI_GET_EVENTID(event) < HISI_UC_URING_EVENT_MIN) ||
+	    (HISI_GET_EVENTID(event) > HISI_UC_URING_EVENT_MAX))
+		dev_warn(uc_pmu->dev,
+			 "Only events: [%#x ~ %#x] support channel filtering!",
+			 HISI_UC_URING_EVENT_MIN, HISI_UC_URING_EVENT_MAX);
+
+	return 0;
+}
+
+static void hisi_uc_pmu_config_req_tracetag(struct perf_event *event)
+{
+	struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+	u32 val;
+
+	if (!hisi_get_rd_req_en(event))
+		return;
+
+	val = readl(uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+
+	/* The request-type has been configured */
+	if (FIELD_GET(HISI_UC_TRACETAG_REQ_MSK, val) == HISI_UC_RD_REQ_TRACETAG)
+		return;
+
+	/* Set request-type for tracetag, only read request is supported! */
+	val &= ~HISI_UC_TRACETAG_REQ_MSK;
+	val |= FIELD_PREP(HISI_UC_TRACETAG_REQ_MSK, HISI_UC_RD_REQ_TRACETAG);
+	val |= HISI_UC_TRACETAG_REQ_EN;
+	writel(val, uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+}
+
+static void hisi_uc_pmu_clear_req_tracetag(struct perf_event *event)
+{
+	struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+	u32 val;
+
+	if (!hisi_get_rd_req_en(event))
+		return;
+
+	val = readl(uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+
+	/* Do nothing, the request-type tracetag has been cleaned up */
+	if (FIELD_GET(HISI_UC_TRACETAG_REQ_MSK, val) == 0)
+		return;
+
+	/* Clear request-type */
+	val &= ~HISI_UC_TRACETAG_REQ_MSK;
+	val &= ~HISI_UC_TRACETAG_REQ_EN;
+	writel(val, uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+}
+
+static void hisi_uc_pmu_config_srcid_tracetag(struct perf_event *event)
+{
+	struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+	u32 val;
+
+	if (!hisi_get_srcid_en(event))
+		return;
+
+	val = readl(uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+
+	/* Do nothing, the source id has been configured */
+	if (FIELD_GET(HISI_UC_TRACETAG_SRCID_EN, val))
+		return;
+
+	/* Enable source id tracetag */
+	val |= HISI_UC_TRACETAG_SRCID_EN;
+	writel(val, uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+
+	val = readl(uc_pmu->base + HISI_UC_SRCID_CTRL_REG);
+	val &= ~HISI_UC_SRCID_MSK;
+	val |= FIELD_PREP(HISI_UC_SRCID_MSK, hisi_get_srcid(event));
+	writel(val, uc_pmu->base + HISI_UC_SRCID_CTRL_REG);
+
+	/* Depend on request-type tracetag enabled */
+	hisi_uc_pmu_config_req_tracetag(event);
+}
+
+static void hisi_uc_pmu_clear_srcid_tracetag(struct perf_event *event)
+{
+	struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+	u32 val;
+
+	if (!hisi_get_srcid_en(event))
+		return;
+
+	val = readl(uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+
+	/* Do nothing, the source id has been cleaned up */
+	if (FIELD_GET(HISI_UC_TRACETAG_SRCID_EN, val) == 0)
+		return;
+
+	hisi_uc_pmu_clear_req_tracetag(event);
+
+	/* Disable source id tracetag */
+	val &= ~HISI_UC_TRACETAG_SRCID_EN;
+	writel(val, uc_pmu->base + HISI_UC_TRACETAG_CTRL_REG);
+
+	val = readl(uc_pmu->base + HISI_UC_SRCID_CTRL_REG);
+	val &= ~HISI_UC_SRCID_MSK;
+	writel(val, uc_pmu->base + HISI_UC_SRCID_CTRL_REG);
+}
+
+static void hisi_uc_pmu_config_uring_channel(struct perf_event *event)
+{
+	struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+	u32 uring_channel = hisi_get_uring_channel(event);
+	u32 val;
+
+	/* Do nothing if not being set or is set explicitly to zero (default) */
+	if (uring_channel == 0)
+		return;
+
+	val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+
+	/* Do nothing, the uring_channel has been configured */
+	if (uring_channel == FIELD_GET(HISI_UC_EVENT_URING_MSK, val))
+		return;
+
+	val &= ~HISI_UC_EVENT_URING_MSK;
+	val |= FIELD_PREP(HISI_UC_EVENT_URING_MSK, uring_channel);
+	writel(val, uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+}
+
+static void hisi_uc_pmu_clear_uring_channel(struct perf_event *event)
+{
+	struct hisi_pmu *uc_pmu = to_hisi_pmu(event->pmu);
+	u32 val;
+
+	/* Do nothing if not being set or is set explicitly to zero (default) */
+	if (hisi_get_uring_channel(event) == 0)
+		return;
+
+	val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+
+	/* Do nothing, the uring_channel has been cleaned up */
+	if (FIELD_GET(HISI_UC_EVENT_URING_MSK, val) == 0)
+		return;
+
+	val &= ~HISI_UC_EVENT_URING_MSK;
+	writel(val, uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+}
+
+static void hisi_uc_pmu_enable_filter(struct perf_event *event)
+{
+	if (event->attr.config1 == 0)
+		return;
+
+	hisi_uc_pmu_config_uring_channel(event);
+	hisi_uc_pmu_config_req_tracetag(event);
+	hisi_uc_pmu_config_srcid_tracetag(event);
+}
+
+static void hisi_uc_pmu_disable_filter(struct perf_event *event)
+{
+	if (event->attr.config1 == 0)
+		return;
+
+	hisi_uc_pmu_clear_srcid_tracetag(event);
+	hisi_uc_pmu_clear_req_tracetag(event);
+	hisi_uc_pmu_clear_uring_channel(event);
+}
+
+static void hisi_uc_pmu_write_evtype(struct hisi_pmu *uc_pmu, int idx, u32 type)
+{
+	u32 val;
+
+	/*
+	 * Select the appropriate event select register.
+	 * There are 2 32-bit event select registers for the
+	 * 8 hardware counters, each event code is 8-bit wide.
+	 */
+	val = readl(uc_pmu->base + HISI_UC_EVTYPE_REG(idx / 4));
+	val &= ~(HISI_UC_EVTYPE_MASK << HISI_PMU_EVTYPE_SHIFT(idx));
+	val |= (type << HISI_PMU_EVTYPE_SHIFT(idx));
+	writel(val, uc_pmu->base + HISI_UC_EVTYPE_REG(idx / 4));
+}
+
+static void hisi_uc_pmu_start_counters(struct hisi_pmu *uc_pmu)
+{
+	u32 val;
+
+	val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+	val |= HISI_UC_EVENT_GLB_EN;
+	writel(val, uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+}
+
+static void hisi_uc_pmu_stop_counters(struct hisi_pmu *uc_pmu)
+{
+	u32 val;
+
+	val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+	val &= ~HISI_UC_EVENT_GLB_EN;
+	writel(val, uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+}
+
+static void hisi_uc_pmu_enable_counter(struct hisi_pmu *uc_pmu,
+					struct hw_perf_event *hwc)
+{
+	u32 val;
+
+	/* Enable counter index */
+	val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+	val |= (1 << hwc->idx);
+	writel(val, uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+}
+
+static void hisi_uc_pmu_disable_counter(struct hisi_pmu *uc_pmu,
+					struct hw_perf_event *hwc)
+{
+	u32 val;
+
+	/* Clear counter index */
+	val = readl(uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+	val &= ~(1 << hwc->idx);
+	writel(val, uc_pmu->base + HISI_UC_EVENT_CTRL_REG);
+}
+
+static u64 hisi_uc_pmu_read_counter(struct hisi_pmu *uc_pmu,
+				    struct hw_perf_event *hwc)
+{
+	return readq(uc_pmu->base + HISI_UC_CNTR_REG(hwc->idx));
+}
+
+static void hisi_uc_pmu_write_counter(struct hisi_pmu *uc_pmu,
+				      struct hw_perf_event *hwc, u64 val)
+{
+	hisi_uc_pmu_start_counters(uc_pmu);
+	writeq(val, uc_pmu->base + HISI_UC_CNTR_REG(hwc->idx));
+}
+
+static void hisi_uc_pmu_enable_counter_int(struct hisi_pmu *uc_pmu,
+					   struct hw_perf_event *hwc)
+{
+	u32 val;
+
+	val = readl(uc_pmu->base + HISI_UC_INT_MASK_REG);
+	/* Write 0 to enable interrupt */
+	val &= ~(1 << hwc->idx);
+	writel(val, uc_pmu->base + HISI_UC_INT_MASK_REG);
+}
+
+static void hisi_uc_pmu_disable_counter_int(struct hisi_pmu *uc_pmu,
+					    struct hw_perf_event *hwc)
+{
+	u32 val;
+
+	val = readl(uc_pmu->base + HISI_UC_INT_MASK_REG);
+	/* Write 1 to mask interrupt */
+	val |= (1 << hwc->idx);
+	writel(val, uc_pmu->base + HISI_UC_INT_MASK_REG);
+}
+
+static u32 hisi_uc_pmu_get_int_status(struct hisi_pmu *uc_pmu)
+{
+	return readl(uc_pmu->base + HISI_UC_INT_STS_REG);
+}
+
+static void hisi_uc_pmu_clear_int_status(struct hisi_pmu *uc_pmu, int idx)
+{
+	writel(1 << idx, uc_pmu->base + HISI_UC_INT_CLEAR_REG);
+}
+
+static int hisi_uc_pmu_init_data(struct platform_device *pdev,
+				 struct hisi_pmu *uc_pmu)
+{
+	/*
+	 * Use the SCCL_ID and CCL_ID to identify the UC PMU, while
+	 * SCCL_ID is in MPIDR[aff2] and CCL_ID is in MPIDR[aff1].
+	 */
+	if (device_property_read_u32(&pdev->dev, "hisilicon,scl-id",
+				     &uc_pmu->sccl_id)) {
+		dev_err(&pdev->dev, "Can not read uc sccl-id!\n");
+		return -EINVAL;
+	}
+
+	if (device_property_read_u32(&pdev->dev, "hisilicon,ccl-id",
+				     &uc_pmu->ccl_id)) {
+		dev_err(&pdev->dev, "Can not read uc ccl-id!\n");
+		return -EINVAL;
+	}
+
+	if (device_property_read_u32(&pdev->dev, "hisilicon,sub-id",
+				     &uc_pmu->sub_id)) {
+		dev_err(&pdev->dev, "Can not read sub-id!\n");
+		return -EINVAL;
+	}
+
+	uc_pmu->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(uc_pmu->base)) {
+		dev_err(&pdev->dev, "ioremap failed for uc_pmu resource\n");
+		return PTR_ERR(uc_pmu->base);
+	}
+
+	uc_pmu->identifier = readl(uc_pmu->base + HISI_UC_VERSION_REG);
+
+	return 0;
+}
+
+static struct attribute *hisi_uc_pmu_format_attr[] = {
+	HISI_PMU_FORMAT_ATTR(event, "config:0-7"),
+	HISI_PMU_FORMAT_ATTR(rd_req_en, "config1:0-0"),
+	HISI_PMU_FORMAT_ATTR(uring_channel, "config1:4-5"),
+	HISI_PMU_FORMAT_ATTR(srcid, "config1:6-19"),
+	HISI_PMU_FORMAT_ATTR(srcid_en, "config1:20-20"),
+	NULL
+};
+
+static const struct attribute_group hisi_uc_pmu_format_group = {
+	.name = "format",
+	.attrs = hisi_uc_pmu_format_attr,
+};
+
+static struct attribute *hisi_uc_pmu_events_attr[] = {
+	HISI_PMU_EVENT_ATTR(sq_time,		0x00),
+	HISI_PMU_EVENT_ATTR(pq_time,		0x01),
+	HISI_PMU_EVENT_ATTR(hbm_time,		0x02),
+	HISI_PMU_EVENT_ATTR(iq_comp_time_cring,	0x03),
+	HISI_PMU_EVENT_ATTR(iq_comp_time_uring,	0x05),
+	HISI_PMU_EVENT_ATTR(cpu_rd,		0x10),
+	HISI_PMU_EVENT_ATTR(cpu_rd64,		0x17),
+	HISI_PMU_EVENT_ATTR(cpu_rs64,		0x19),
+	HISI_PMU_EVENT_ATTR(cpu_mru,		0x1a),
+	HISI_PMU_EVENT_ATTR(cycles,		0x9c),
+	HISI_PMU_EVENT_ATTR(spipe_hit,		0xb3),
+	HISI_PMU_EVENT_ATTR(hpipe_hit,		0xdb),
+	HISI_PMU_EVENT_ATTR(cring_rxdat_cnt,	0xfa),
+	HISI_PMU_EVENT_ATTR(cring_txdat_cnt,	0xfb),
+	HISI_PMU_EVENT_ATTR(uring_rxdat_cnt,	0xfc),
+	HISI_PMU_EVENT_ATTR(uring_txdat_cnt,	0xfd),
+	NULL
+};
+
+static const struct attribute_group hisi_uc_pmu_events_group = {
+	.name = "events",
+	.attrs = hisi_uc_pmu_events_attr,
+};
+
+static DEVICE_ATTR(cpumask, 0444, hisi_cpumask_sysfs_show, NULL);
+
+static struct attribute *hisi_uc_pmu_cpumask_attrs[] = {
+	&dev_attr_cpumask.attr,
+	NULL,
+};
+
+static const struct attribute_group hisi_uc_pmu_cpumask_attr_group = {
+	.attrs = hisi_uc_pmu_cpumask_attrs,
+};
+
+static struct device_attribute hisi_uc_pmu_identifier_attr =
+	__ATTR(identifier, 0444, hisi_uncore_pmu_identifier_attr_show, NULL);
+
+static struct attribute *hisi_uc_pmu_identifier_attrs[] = {
+	&hisi_uc_pmu_identifier_attr.attr,
+	NULL
+};
+
+static const struct attribute_group hisi_uc_pmu_identifier_group = {
+	.attrs = hisi_uc_pmu_identifier_attrs,
+};
+
+static const struct attribute_group *hisi_uc_pmu_attr_groups[] = {
+	&hisi_uc_pmu_format_group,
+	&hisi_uc_pmu_events_group,
+	&hisi_uc_pmu_cpumask_attr_group,
+	&hisi_uc_pmu_identifier_group,
+	NULL
+};
+
+static const struct hisi_uncore_ops hisi_uncore_uc_pmu_ops = {
+	.check_format		= hisi_uc_pmu_check_format,
+	.write_evtype		= hisi_uc_pmu_write_evtype,
+	.get_event_idx		= hisi_uncore_pmu_get_event_idx,
+	.start_counters		= hisi_uc_pmu_start_counters,
+	.stop_counters		= hisi_uc_pmu_stop_counters,
+	.enable_counter		= hisi_uc_pmu_enable_counter,
+	.disable_counter	= hisi_uc_pmu_disable_counter,
+	.enable_counter_int	= hisi_uc_pmu_enable_counter_int,
+	.disable_counter_int	= hisi_uc_pmu_disable_counter_int,
+	.write_counter		= hisi_uc_pmu_write_counter,
+	.read_counter		= hisi_uc_pmu_read_counter,
+	.get_int_status		= hisi_uc_pmu_get_int_status,
+	.clear_int_status	= hisi_uc_pmu_clear_int_status,
+	.enable_filter		= hisi_uc_pmu_enable_filter,
+	.disable_filter		= hisi_uc_pmu_disable_filter,
+};
+
+static int hisi_uc_pmu_dev_probe(struct platform_device *pdev,
+				 struct hisi_pmu *uc_pmu)
+{
+	int ret;
+
+	ret = hisi_uc_pmu_init_data(pdev, uc_pmu);
+	if (ret)
+		return ret;
+
+	ret = hisi_uncore_pmu_init_irq(uc_pmu, pdev);
+	if (ret)
+		return ret;
+
+	uc_pmu->pmu_events.attr_groups = hisi_uc_pmu_attr_groups;
+	uc_pmu->check_event = HISI_UC_EVTYPE_MASK;
+	uc_pmu->ops = &hisi_uncore_uc_pmu_ops;
+	uc_pmu->counter_bits = HISI_UC_CNTR_REG_BITS;
+	uc_pmu->num_counters = HISI_UC_NR_COUNTERS;
+	uc_pmu->dev = &pdev->dev;
+	uc_pmu->on_cpu = -1;
+
+	return 0;
+}
+
+static void hisi_uc_pmu_remove_cpuhp_instance(void *hotplug_node)
+{
+	cpuhp_state_remove_instance_nocalls(hisi_uc_pmu_online, hotplug_node);
+}
+
+static void hisi_uc_pmu_unregister_pmu(void *pmu)
+{
+	perf_pmu_unregister(pmu);
+}
+
+static int hisi_uc_pmu_probe(struct platform_device *pdev)
+{
+	struct hisi_pmu *uc_pmu;
+	char *name;
+	int ret;
+
+	uc_pmu = devm_kzalloc(&pdev->dev, sizeof(*uc_pmu), GFP_KERNEL);
+	if (!uc_pmu)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, uc_pmu);
+
+	ret = hisi_uc_pmu_dev_probe(pdev, uc_pmu);
+	if (ret)
+		return ret;
+
+	name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "hisi_sccl%d_uc%d_%u",
+			      uc_pmu->sccl_id, uc_pmu->ccl_id, uc_pmu->sub_id);
+	if (!name)
+		return -ENOMEM;
+
+	ret = cpuhp_state_add_instance(hisi_uc_pmu_online, &uc_pmu->node);
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret, "Error registering hotplug\n");
+
+	ret = devm_add_action_or_reset(&pdev->dev,
+				       hisi_uc_pmu_remove_cpuhp_instance,
+				       &uc_pmu->node);
+	if (ret)
+		return ret;
+
+	hisi_pmu_init(uc_pmu, THIS_MODULE);
+
+	ret = perf_pmu_register(&uc_pmu->pmu, name, -1);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(&pdev->dev,
+					hisi_uc_pmu_unregister_pmu,
+					&uc_pmu->pmu);
+}
+
+static const struct acpi_device_id hisi_uc_pmu_acpi_match[] = {
+	{ "HISI0291", },
+	{}
+};
+MODULE_DEVICE_TABLE(acpi, hisi_uc_pmu_acpi_match);
+
+static struct platform_driver hisi_uc_pmu_driver = {
+	.driver = {
+		.name = "hisi_uc_pmu",
+		.acpi_match_table = hisi_uc_pmu_acpi_match,
+		.suppress_bind_attrs = true,
+	},
+	.probe = hisi_uc_pmu_probe,
+};
+
+static int __init hisi_uc_pmu_module_init(void)
+{
+	int ret;
+
+	ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
+				      "perf/hisi/uc:online",
+				      hisi_uncore_pmu_online_cpu,
+				      hisi_uncore_pmu_offline_cpu);
+	if (ret < 0) {
+		pr_err("UC PMU: Error setup hotplug, ret = %d\n", ret);
+		return ret;
+	}
+	hisi_uc_pmu_online = ret;
+
+	ret = platform_driver_register(&hisi_uc_pmu_driver);
+	if (ret)
+		cpuhp_remove_multi_state(hisi_uc_pmu_online);
+
+	return ret;
+}
+module_init(hisi_uc_pmu_module_init);
+
+static void __exit hisi_uc_pmu_module_exit(void)
+{
+	platform_driver_unregister(&hisi_uc_pmu_driver);
+	cpuhp_remove_multi_state(hisi_uc_pmu_online);
+}
+module_exit(hisi_uc_pmu_module_exit);
+
+MODULE_DESCRIPTION("HiSilicon SoC UC uncore PMU driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Junhao He <hejunhao3@huawei.com>");