[PATCH openEuler-21.09 09/33] drivers/perf: hisi: Add identifier sysfs file

From: John Garry john.garry@huawei.com

mainline inclusion from mainline-v5.10-rc3 commit ac4511c9364c9a6390e8585cdd4596103bca16eb category: feature bugzilla: 175148 CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...

------------------------------------------------------------------------

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@huaw... Signed-off-by: Will Deacon will@kernel.org Reviewed-by: Shaokun Zhang zhangshaokun@hisilicon.com Signed-off-by: Zheng Zengkai zhengzengkai@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 5e3645c96443..5ac6c9113767 100644 --- a/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c +++ b/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c @@ -33,6 +33,7 @@ #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 @@ -267,6 +268,8 @@ 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; }

@@ -308,10 +311,23 @@ 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 5eb8168029c0..41b2dceb5f26 100644 --- a/drivers/perf/hisilicon/hisi_uncore_hha_pmu.c +++ b/drivers/perf/hisilicon/hisi_uncore_hha_pmu.c @@ -23,6 +23,7 @@ #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 @@ -261,6 +262,8 @@ 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; }

@@ -320,10 +323,23 @@ 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 3e8b5eab5514..705501d18d03 100644 --- a/drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c +++ b/drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c @@ -25,6 +25,7 @@ #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 @@ -264,6 +265,8 @@ 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; }

@@ -310,10 +313,23 @@ 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 97aff877a4e7..9dbdc3fc3bb4 100644 --- a/drivers/perf/hisilicon/hisi_uncore_pmu.c +++ b/drivers/perf/hisilicon/hisi_uncore_pmu.c @@ -119,6 +119,16 @@ 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 b59ec22169ab..25b7cbe1f818 100644 --- a/drivers/perf/hisilicon/hisi_uncore_pmu.h +++ b/drivers/perf/hisilicon/hisi_uncore_pmu.h @@ -75,6 +75,7 @@ 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); @@ -97,4 +98,10 @@ 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__ */