/* SPDX-License-Identifier: GPL-2.0 * * ARM CoreSight Architecture PMU driver. * Copyright (c) 2022-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved. * */ #ifndef __ARM_CSPMU_H__ #define __ARM_CSPMU_H__ #include <linux/bitfield.h> #include <linux/cpumask.h> #include <linux/device.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/perf_event.h> #include <linux/platform_device.h> #include <linux/types.h> #define to_arm_cspmu(p) … #define ARM_CSPMU_EXT_ATTR(_name, _func, _config) … #define ARM_CSPMU_FORMAT_ATTR(_name, _config) … #define ARM_CSPMU_EVENT_ATTR(_name, _config) … /* Default event id mask */ #define ARM_CSPMU_EVENT_MASK … /* Default filter value mask */ #define ARM_CSPMU_FILTER_MASK … /* Default event format */ #define ARM_CSPMU_FORMAT_EVENT_ATTR … /* Default filter format */ #define ARM_CSPMU_FORMAT_FILTER_ATTR … /* * This is the default event number for cycle count, if supported, since the * ARM Coresight PMU specification does not define a standard event code * for cycle count. */ #define ARM_CSPMU_EVT_CYCLES_DEFAULT … /* * The ARM Coresight PMU supports up to 256 event counters. * If the counters are larger-than 32-bits, then the PMU includes at * most 128 counters. */ #define ARM_CSPMU_MAX_HW_CNTRS … /* The cycle counter, if implemented, is located at counter[31]. */ #define ARM_CSPMU_CYCLE_CNTR_IDX … /* PMIIDR register field */ #define ARM_CSPMU_PMIIDR_IMPLEMENTER … #define ARM_CSPMU_PMIIDR_PRODUCTID … /* JEDEC-assigned JEP106 identification code */ #define ARM_CSPMU_IMPL_ID_NVIDIA … #define ARM_CSPMU_IMPL_ID_AMPERE … struct arm_cspmu; /* This tracks the events assigned to each counter in the PMU. */ struct arm_cspmu_hw_events { … }; /* Contains ops to query vendor/implementer specific attribute. */ struct arm_cspmu_impl_ops { … }; /* Vendor/implementer registration parameter. */ struct arm_cspmu_impl_match { … }; /* Vendor/implementer descriptor. */ struct arm_cspmu_impl { … }; /* Coresight PMU descriptor. */ struct arm_cspmu { … }; /* Default function to show event attribute in sysfs. */ ssize_t arm_cspmu_sysfs_event_show(struct device *dev, struct device_attribute *attr, char *buf); /* Register vendor backend. */ int arm_cspmu_impl_register(const struct arm_cspmu_impl_match *impl_match); /* Unregister vendor backend. */ void arm_cspmu_impl_unregister(const struct arm_cspmu_impl_match *impl_match); #endif /* __ARM_CSPMU_H__ */
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