diff options
Diffstat (limited to 'drivers/perf/hisilicon/hisi_uncore_pmu.h')
| -rw-r--r-- | drivers/perf/hisilicon/hisi_uncore_pmu.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.h b/drivers/perf/hisilicon/hisi_uncore_pmu.h new file mode 100644 index 000000000000..f21226a0e9c6 --- /dev/null +++ b/drivers/perf/hisilicon/hisi_uncore_pmu.h @@ -0,0 +1,102 @@ +/* + * HiSilicon SoC Hardware event counters support + * + * Copyright (C) 2017 Hisilicon Limited + * Author: Anurup M <anurup.m@huawei.com> + * Shaokun Zhang <zhangshaokun@hisilicon.com> + * + * This code is based on the uncore PMUs like arm-cci and arm-ccn. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __HISI_UNCORE_PMU_H__ +#define __HISI_UNCORE_PMU_H__ + +#include <linux/cpumask.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/perf_event.h> +#include <linux/types.h> + +#undef pr_fmt +#define pr_fmt(fmt) "hisi_pmu: " fmt + +#define HISI_MAX_COUNTERS 0x10 +#define to_hisi_pmu(p) (container_of(p, struct hisi_pmu, pmu)) + +#define HISI_PMU_ATTR(_name, _func, _config) \ + (&((struct dev_ext_attribute[]) { \ + { __ATTR(_name, 0444, _func, NULL), (void *)_config } \ + })[0].attr.attr) + +#define HISI_PMU_FORMAT_ATTR(_name, _config) \ + HISI_PMU_ATTR(_name, hisi_format_sysfs_show, (void *)_config) +#define HISI_PMU_EVENT_ATTR(_name, _config) \ + HISI_PMU_ATTR(_name, hisi_event_sysfs_show, (unsigned long)_config) + +struct hisi_pmu; + +struct hisi_uncore_ops { + 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 *); + void (*write_counter)(struct hisi_pmu *, struct hw_perf_event *, u64); + void (*enable_counter)(struct hisi_pmu *, struct hw_perf_event *); + void (*disable_counter)(struct hisi_pmu *, struct hw_perf_event *); + void (*enable_counter_int)(struct hisi_pmu *, struct hw_perf_event *); + void (*disable_counter_int)(struct hisi_pmu *, struct hw_perf_event *); + void (*start_counters)(struct hisi_pmu *); + void (*stop_counters)(struct hisi_pmu *); +}; + +struct hisi_pmu_hwevents { + struct perf_event *hw_events[HISI_MAX_COUNTERS]; + DECLARE_BITMAP(used_mask, HISI_MAX_COUNTERS); +}; + +/* Generic pmu struct for different pmu types */ +struct hisi_pmu { + struct pmu pmu; + const struct hisi_uncore_ops *ops; + struct hisi_pmu_hwevents pmu_events; + /* associated_cpus: All CPUs associated with the PMU */ + cpumask_t associated_cpus; + /* CPU used for counting */ + int on_cpu; + int irq; + struct device *dev; + struct hlist_node node; + int sccl_id; + int ccl_id; + void __iomem *base; + /* the ID of the PMU modules */ + u32 index_id; + int num_counters; + int counter_bits; + /* check event code range */ + int check_event; +}; + +int hisi_uncore_pmu_counter_valid(struct hisi_pmu *hisi_pmu, int idx); +int hisi_uncore_pmu_get_event_idx(struct perf_event *event); +void hisi_uncore_pmu_read(struct perf_event *event); +int hisi_uncore_pmu_add(struct perf_event *event, int flags); +void hisi_uncore_pmu_del(struct perf_event *event, int flags); +void hisi_uncore_pmu_start(struct perf_event *event, int flags); +void hisi_uncore_pmu_stop(struct perf_event *event, int flags); +void hisi_uncore_pmu_set_event_period(struct perf_event *event); +void hisi_uncore_pmu_event_update(struct perf_event *event); +int hisi_uncore_pmu_event_init(struct perf_event *event); +void hisi_uncore_pmu_enable(struct pmu *pmu); +void hisi_uncore_pmu_disable(struct pmu *pmu); +ssize_t hisi_event_sysfs_show(struct device *dev, + struct device_attribute *attr, char *buf); +ssize_t hisi_format_sysfs_show(struct device *dev, + struct device_attribute *attr, char *buf); +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); +#endif /* __HISI_UNCORE_PMU_H__ */ |