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/**
* Copyright (C) ARM Limited 2010-2016. All rights reserved.
*
* 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 GATOR_H_
#define GATOR_H_
#include <linux/version.h>
#include <linux/fs.h>
#include <linux/mm.h>
#include <linux/list.h>
#define GATOR_PERF_PMU_SUPPORT (defined(CONFIG_PERF_EVENTS) && (!(defined(__arm__) || defined(__aarch64__)) || defined(CONFIG_HW_PERF_EVENTS)))
#define GATOR_CPU_FREQ_SUPPORT defined(CONFIG_CPU_FREQ)
#define GATOR_IKS_SUPPORT defined(CONFIG_BL_SWITCHER)
/* cpu ids */
#define CORTEX_A5 0x41c05
#define CORTEX_A9 0x41c09
#define OTHER 0xfffff
#define MAXSIZE_CORE_NAME 32
struct gator_cpu {
struct list_head list;
unsigned long cpuid;
unsigned long pmnc_counters;
/* Human readable name */
char core_name[MAXSIZE_CORE_NAME];
/* gatorfs event and Perf PMU name */
char pmnc_name[MAXSIZE_CORE_NAME];
/* compatible from Documentation/devicetree/bindings/arm/cpus.txt */
char dt_name[MAXSIZE_CORE_NAME];
};
/* clusters */
#define GATOR_CLUSTER_COUNT 4
extern const struct gator_cpu *gator_clusters[GATOR_CLUSTER_COUNT];
extern int gator_clusterids[NR_CPUS];
extern int gator_cluster_count;
/* gpu enums */
#define MALI_4xx 1
#define MALI_MIDGARD 2
/******************************************************************************
* Filesystem
******************************************************************************/
struct dentry *gatorfs_mkdir(struct super_block *sb, struct dentry *root,
char const *name);
int gatorfs_create_ulong(struct super_block *sb, struct dentry *root,
char const *name, unsigned long *val);
int gatorfs_create_ro_ulong(struct super_block *sb, struct dentry *root,
char const *name, unsigned long *val);
/******************************************************************************
* Tracepoints
******************************************************************************/
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 4, 0)
# error Kernels prior to 3.4 not supported. DS-5 v5.21 and earlier supported 2.6.32 and later.
#elif LINUX_VERSION_CODE < KERNEL_VERSION(3, 15, 0)
# define GATOR_DEFINE_PROBE(probe_name, proto) \
static void probe_##probe_name(void *data, PARAMS(proto))
# define GATOR_REGISTER_TRACE(probe_name) \
register_trace_##probe_name(probe_##probe_name, NULL)
# define GATOR_UNREGISTER_TRACE(probe_name) \
unregister_trace_##probe_name(probe_##probe_name, NULL)
#else
# define GATOR_DEFINE_PROBE(probe_name, proto) \
extern struct tracepoint *gator_tracepoint_##probe_name; \
static void probe_##probe_name(void *data, PARAMS(proto))
# define GATOR_REGISTER_TRACE(probe_name) \
((gator_tracepoint_##probe_name == NULL) || tracepoint_probe_register(gator_tracepoint_##probe_name, probe_##probe_name, NULL))
# define GATOR_UNREGISTER_TRACE(probe_name) \
tracepoint_probe_unregister(gator_tracepoint_##probe_name, probe_##probe_name, NULL)
#endif
/******************************************************************************
* Events
******************************************************************************/
struct gator_interface {
const char *const name;
/* Complementary function to init */
void (*shutdown)(void);
int (*create_files)(struct super_block *sb, struct dentry *root);
int (*start)(void);
/* Complementary function to start */
void (*stop)(void);
int (*online)(int **buffer, bool migrate);
int (*offline)(int **buffer, bool migrate);
/* called in process context but may not be running on core 'cpu' */
void (*online_dispatch)(int cpu, bool migrate);
/* called in process context but may not be running on core 'cpu' */
void (*offline_dispatch)(int cpu, bool migrate);
int (*read)(int **buffer, bool sched_switch);
int (*read64)(long long **buffer, bool sched_switch);
int (*read_proc)(long long **buffer, struct task_struct *);
struct list_head list;
};
u64 gator_get_time(void);
int gator_events_install(struct gator_interface *interface);
int gator_events_get_key(void);
u32 gator_cpuid(void);
void gator_marshal_activity_switch(int core, int key, int activity, int pid);
#if !GATOR_IKS_SUPPORT
#define get_physical_cpu() smp_processor_id()
#define lcpu_to_pcpu(lcpu) lcpu
#define pcpu_to_lcpu(pcpu) pcpu
#else
#define get_physical_cpu() lcpu_to_pcpu(get_logical_cpu())
int lcpu_to_pcpu(const int lcpu);
int pcpu_to_lcpu(const int pcpu);
#endif
#define get_logical_cpu() smp_processor_id()
#define on_primary_core() (get_logical_cpu() == 0)
#endif /* GATOR_H_ */
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