Messages in this thread Patch in this message | | | From | John Garry <> | Subject | [PATCH] drivers/perf: hisi: Add identifier sysfs file | Date | Wed, 17 Jun 2020 21:05:11 +0800 |
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To allow userspace to identify the specific implementation of the device, add an "identifier" sysfs file.
Encoding is as follows: hi1620: 0x0 (aka hip08) hi1630: 0x30
Signed-off-by: John Garry <john.garry@huawei.com>
diff --git a/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c b/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c index 15713faaa07e..a83d99f2662e 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 dcc5600788a9..4fdaf1d995be 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 7719ae4e2c56..0e7477220be1 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..023e247634db 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 sprintf(page, "0x%x\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 25b0c97b3eb0..14ecaf763153 100644 --- a/drivers/perf/hisilicon/hisi_uncore_pmu.h +++ b/drivers/perf/hisilicon/hisi_uncore_pmu.h @@ -74,6 +74,7 @@ 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); @@ -96,4 +97,10 @@ 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__ */ -- 2.26.2
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