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/**
* Copyright (C) ARM Limited 2012-2013. 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.
*
*/
#if !defined(GATOR_EVENTS_MALI_COMMON_H)
#define GATOR_EVENTS_MALI_COMMON_H
#include "gator.h"
#include <linux/module.h>
#include <linux/time.h>
#include <linux/math64.h>
#include <linux/slab.h>
#include <asm/io.h>
/* Device codes for each known GPU */
#define MALI_4xx (0x0b07)
#define MALI_T6xx (0x0056)
/* Ensure that MALI_SUPPORT has been defined to something. */
#ifndef MALI_SUPPORT
#error MALI_SUPPORT not defined!
#endif
/* Values for the supported activity event types */
#define ACTIVITY_START (1)
#define ACTIVITY_STOP (2)
/*
* Runtime state information for a counter.
*/
typedef struct {
unsigned long key; /* 'key' (a unique id set by gatord and returned by gator.ko) */
unsigned long enabled; /* counter enable state */
} mali_counter;
/*
* Mali-4xx
*/
typedef int mali_profiling_set_event_type(unsigned int, int);
typedef void mali_profiling_control_type(unsigned int, unsigned int);
typedef void mali_profiling_get_counters_type(unsigned int *, unsigned int *, unsigned int *, unsigned int *);
/*
* Driver entry points for functions called directly by gator.
*/
extern int _mali_profiling_set_event(unsigned int, int);
extern void _mali_profiling_control(unsigned int, unsigned int);
extern void _mali_profiling_get_counters(unsigned int *, unsigned int *, unsigned int *, unsigned int *);
/**
* Returns a name which identifies the GPU type (eg Mali-4xx, Mali-T6xx).
*
* @return The name as a constant string.
*/
extern const char *gator_mali_get_mali_name(void);
/**
* Creates a filesystem entry under /dev/gator relating to the specified event name and key, and
* associate the key/enable values with this entry point.
*
* @param mali_name A name related to the type of GPU, obtained from a call to gator_mali_get_mali_name()
* @param event_name The name of the event.
* @param sb Linux super block
* @param root Directory under which the entry will be created.
* @param counter_key Ptr to location which will be associated with the counter key.
* @param counter_enabled Ptr to location which will be associated with the counter enable state.
*
* @return 0 if entry point was created, non-zero if not.
*/
extern int gator_mali_create_file_system(const char *mali_name, const char *event_name, struct super_block *sb, struct dentry *root, mali_counter *counter, unsigned long *event);
/**
* Initializes the counter array.
*
* @param keys The array of counters
* @param n_counters The number of entries in each of the arrays.
*/
extern void gator_mali_initialise_counters(mali_counter counters[], unsigned int n_counters);
#endif /* GATOR_EVENTS_MALI_COMMON_H */
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