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kernel/patches/0053-drivers-perf-hisi-Add-identifier-sysfs-file.patch
hongrongxuan 639cc4585b Add support for hisilicon uncore pmu drivers
2023-11-02 10:04:51 +08:00

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From 7da4fb60563da82f9b482af152909d29818b5d9e Mon Sep 17 00:00:00 2001
From: John Garry <john.garry@huawei.com>
Date: Fri, 30 Jul 2021 15:43:58 +0800
Subject: [PATCH 12/55] drivers/perf: hisi: Add identifier sysfs file
mainline inclusion
from mainline-v5.10-rc3
commit ac4511c9364c9a6390e8585cdd4596103bca16eb
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8AU2M
CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ac4511c9364c9a6390e8585cdd4596103bca16eb
------------------------------------------------------------------------
To allow userspace to identify the specific implementation of the device,
add an "identifier" sysfs file.
Encoding is as follows (same for all uncore drivers):
hi1620: 0x0
hi1630: 0x30
Signed-off-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1602149181-237415-2-git-send-email-john.garry@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Reviewed-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
Signed-off-by: hongrongxuan <hongrongxuan@huawei.com>
---
drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c | 16 ++++++++++++++++
drivers/perf/hisilicon/hisi_uncore_hha_pmu.c | 16 ++++++++++++++++
drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c | 16 ++++++++++++++++
drivers/perf/hisilicon/hisi_uncore_pmu.c | 10 ++++++++++
drivers/perf/hisilicon/hisi_uncore_pmu.h | 7 +++++++
5 files changed, 65 insertions(+)
diff --git a/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c b/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c
index 5d9dd4078994..a88c7d840d38 100644
--- a/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c
+++ b/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c
@@ -36,6 +36,7 @@
#define DDRC_INT_MASK 0x6c8
#define DDRC_INT_STATUS 0x6cc
#define DDRC_INT_CLEAR 0x6d0
+#define DDRC_VERSION 0x710
/* DDRC has 8-counters */
#define DDRC_NR_COUNTERS 0x8
@@ -272,6 +273,8 @@ static int hisi_ddrc_pmu_init_data(struct platform_device *pdev,
return PTR_ERR(ddrc_pmu->base);
}
+ ddrc_pmu->identifier = readl(ddrc_pmu->base + DDRC_VERSION);
+
return 0;
}
@@ -313,10 +316,23 @@ static const struct attribute_group hisi_ddrc_pmu_cpumask_attr_group = {
.attrs = hisi_ddrc_pmu_cpumask_attrs,
};
+static struct device_attribute hisi_ddrc_pmu_identifier_attr =
+ __ATTR(identifier, 0444, hisi_uncore_pmu_identifier_attr_show, NULL);
+
+static struct attribute *hisi_ddrc_pmu_identifier_attrs[] = {
+ &hisi_ddrc_pmu_identifier_attr.attr,
+ NULL
+};
+
+static struct attribute_group hisi_ddrc_pmu_identifier_group = {
+ .attrs = hisi_ddrc_pmu_identifier_attrs,
+};
+
static const struct attribute_group *hisi_ddrc_pmu_attr_groups[] = {
&hisi_ddrc_pmu_format_group,
&hisi_ddrc_pmu_events_group,
&hisi_ddrc_pmu_cpumask_attr_group,
+ &hisi_ddrc_pmu_identifier_group,
NULL,
};
diff --git a/drivers/perf/hisilicon/hisi_uncore_hha_pmu.c b/drivers/perf/hisilicon/hisi_uncore_hha_pmu.c
index d3c517325a3f..1e0138bbe6e7 100644
--- a/drivers/perf/hisilicon/hisi_uncore_hha_pmu.c
+++ b/drivers/perf/hisilicon/hisi_uncore_hha_pmu.c
@@ -26,6 +26,7 @@
#define HHA_INT_MASK 0x0804
#define HHA_INT_STATUS 0x0808
#define HHA_INT_CLEAR 0x080C
+#define HHA_VERSION 0x1cf0
#define HHA_PERF_CTRL 0x1E00
#define HHA_EVENT_CTRL 0x1E04
#define HHA_EVENT_TYPE0 0x1E80
@@ -266,6 +267,8 @@ static int hisi_hha_pmu_init_data(struct platform_device *pdev,
return PTR_ERR(hha_pmu->base);
}
+ hha_pmu->identifier = readl(hha_pmu->base + HHA_VERSION);
+
return 0;
}
@@ -325,10 +328,23 @@ static const struct attribute_group hisi_hha_pmu_cpumask_attr_group = {
.attrs = hisi_hha_pmu_cpumask_attrs,
};
+static struct device_attribute hisi_hha_pmu_identifier_attr =
+ __ATTR(identifier, 0444, hisi_uncore_pmu_identifier_attr_show, NULL);
+
+static struct attribute *hisi_hha_pmu_identifier_attrs[] = {
+ &hisi_hha_pmu_identifier_attr.attr,
+ NULL
+};
+
+static struct attribute_group hisi_hha_pmu_identifier_group = {
+ .attrs = hisi_hha_pmu_identifier_attrs,
+};
+
static const struct attribute_group *hisi_hha_pmu_attr_groups[] = {
&hisi_hha_pmu_format_group,
&hisi_hha_pmu_events_group,
&hisi_hha_pmu_cpumask_attr_group,
+ &hisi_hha_pmu_identifier_group,
NULL,
};
diff --git a/drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c b/drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c
index cbbf73ea66e6..1707ae551ece 100644
--- a/drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c
+++ b/drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c
@@ -28,6 +28,7 @@
#define L3C_INT_STATUS 0x0808
#define L3C_INT_CLEAR 0x080c
#define L3C_EVENT_CTRL 0x1c00
+#define L3C_VERSION 0x1cf0
#define L3C_EVENT_TYPE0 0x1d00
/*
* Each counter is 48-bits and [48:63] are reserved
@@ -269,6 +270,8 @@ static int hisi_l3c_pmu_init_data(struct platform_device *pdev,
return PTR_ERR(l3c_pmu->base);
}
+ l3c_pmu->identifier = readl(l3c_pmu->base + L3C_VERSION);
+
return 0;
}
@@ -315,10 +318,23 @@ static const struct attribute_group hisi_l3c_pmu_cpumask_attr_group = {
.attrs = hisi_l3c_pmu_cpumask_attrs,
};
+static struct device_attribute hisi_l3c_pmu_identifier_attr =
+ __ATTR(identifier, 0444, hisi_uncore_pmu_identifier_attr_show, NULL);
+
+static struct attribute *hisi_l3c_pmu_identifier_attrs[] = {
+ &hisi_l3c_pmu_identifier_attr.attr,
+ NULL
+};
+
+static struct attribute_group hisi_l3c_pmu_identifier_group = {
+ .attrs = hisi_l3c_pmu_identifier_attrs,
+};
+
static const struct attribute_group *hisi_l3c_pmu_attr_groups[] = {
&hisi_l3c_pmu_format_group,
&hisi_l3c_pmu_events_group,
&hisi_l3c_pmu_cpumask_attr_group,
+ &hisi_l3c_pmu_identifier_group,
NULL,
};
diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.c b/drivers/perf/hisilicon/hisi_uncore_pmu.c
index 50b654a13305..f6a992da24bf 100644
--- a/drivers/perf/hisilicon/hisi_uncore_pmu.c
+++ b/drivers/perf/hisilicon/hisi_uncore_pmu.c
@@ -122,6 +122,16 @@ int hisi_uncore_pmu_get_event_idx(struct perf_event *event)
}
EXPORT_SYMBOL_GPL(hisi_uncore_pmu_get_event_idx);
+ssize_t hisi_uncore_pmu_identifier_attr_show(struct device *dev,
+ struct device_attribute *attr,
+ char *page)
+{
+ struct hisi_pmu *hisi_pmu = to_hisi_pmu(dev_get_drvdata(dev));
+
+ return snprintf(page, PAGE_SIZE, "0x%08x\n", hisi_pmu->identifier);
+}
+EXPORT_SYMBOL_GPL(hisi_uncore_pmu_identifier_attr_show);
+
static void hisi_uncore_pmu_clear_event_idx(struct hisi_pmu *hisi_pmu, int idx)
{
if (!hisi_uncore_pmu_counter_valid(hisi_pmu, idx)) {
diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.h b/drivers/perf/hisilicon/hisi_uncore_pmu.h
index 8f2f2fc5dde4..098a8f6dc7ee 100644
--- a/drivers/perf/hisilicon/hisi_uncore_pmu.h
+++ b/drivers/perf/hisilicon/hisi_uncore_pmu.h
@@ -78,6 +78,7 @@ struct hisi_pmu {
int counter_bits;
/* check event code range */
int check_event;
+ u32 identifier;
};
int hisi_uncore_pmu_counter_valid(struct hisi_pmu *hisi_pmu, int idx);
@@ -100,4 +101,10 @@ ssize_t hisi_cpumask_sysfs_show(struct device *dev,
struct device_attribute *attr, char *buf);
int hisi_uncore_pmu_online_cpu(unsigned int cpu, struct hlist_node *node);
int hisi_uncore_pmu_offline_cpu(unsigned int cpu, struct hlist_node *node);
+
+ssize_t hisi_uncore_pmu_identifier_attr_show(struct device *dev,
+ struct device_attribute *attr,
+ char *page);
+
+
#endif /* __HISI_UNCORE_PMU_H__ */
--
2.27.0
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