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/**
* Copyright (C) ARM Limited 2010-2012. 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.
*/
#include "gator.h"
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/time.h>
#include <linux/math64.h>
#ifdef MALI_SUPPORT
#include "linux/mali_linux_trace.h"
#endif
#include "gator_trace_gpu.h"
/*
* Taken from MALI_PROFILING_EVENT_TYPE_* items in Mali DDK.
*/
#define EVENT_TYPE_SINGLE 0
#define EVENT_TYPE_START 1
#define EVENT_TYPE_STOP 2
#define EVENT_TYPE_SUSPEND 3
#define EVENT_TYPE_RESUME 4
/* Note whether tracepoints have been registered */
static int mali_timeline_trace_registered;
static int mali_job_slots_trace_registered;
static int gpu_trace_registered;
#define GPU_UNIT_NONE 0
#define GPU_UNIT_VP 1
#define GPU_UNIT_FP 2
#define GPU_UNIT_CL 3
#define MALI_400 (0x0b07)
#define MALI_T6xx (0x0056)
#if defined(MALI_SUPPORT) && (MALI_SUPPORT != MALI_T6xx)
#include "gator_events_mali_400.h"
/*
* Taken from MALI_PROFILING_EVENT_CHANNEL_* in Mali DDK.
*/
enum {
EVENT_CHANNEL_SOFTWARE = 0,
EVENT_CHANNEL_VP0 = 1,
EVENT_CHANNEL_FP0 = 5,
EVENT_CHANNEL_FP1,
EVENT_CHANNEL_FP2,
EVENT_CHANNEL_FP3,
EVENT_CHANNEL_FP4,
EVENT_CHANNEL_FP5,
EVENT_CHANNEL_FP6,
EVENT_CHANNEL_FP7,
EVENT_CHANNEL_GPU = 21
};
/**
* These events are applicable when the type MALI_PROFILING_EVENT_TYPE_SINGLE is used from the GPU channel
*/
enum {
EVENT_REASON_SINGLE_GPU_NONE = 0,
EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE = 1,
};
GATOR_DEFINE_PROBE(mali_timeline_event, TP_PROTO(unsigned int event_id, unsigned int d0, unsigned int d1, unsigned int d2, unsigned int d3, unsigned int d4))
{
unsigned int component, state;
// do as much work as possible before disabling interrupts
component = (event_id >> 16) & 0xFF; // component is an 8-bit field
state = (event_id >> 24) & 0xF; // state is a 4-bit field
switch (state) {
case EVENT_TYPE_START:
if (component == EVENT_CHANNEL_VP0) {
/* tgid = d0; pid = d1; */
marshal_sched_gpu_start(GPU_UNIT_VP, 0, d0, d1);
} else if (component >= EVENT_CHANNEL_FP0 && component <= EVENT_CHANNEL_FP7) {
/* tgid = d0; pid = d1; */
marshal_sched_gpu_start(GPU_UNIT_FP, component - EVENT_CHANNEL_FP0, d0, d1);
}
break;
case EVENT_TYPE_STOP:
if (component == EVENT_CHANNEL_VP0) {
marshal_sched_gpu_stop(GPU_UNIT_VP, 0);
} else if (component >= EVENT_CHANNEL_FP0 && component <= EVENT_CHANNEL_FP7) {
marshal_sched_gpu_stop(GPU_UNIT_FP, component - EVENT_CHANNEL_FP0);
}
break;
case EVENT_TYPE_SINGLE:
if (component == EVENT_CHANNEL_GPU) {
unsigned int reason = (event_id & 0xffff);
if(reason == EVENT_REASON_SINGLE_GPU_FREQ_VOLT_CHANGE) {
gator_events_mali_log_dvfs_event(d0, d1);
}
}
break;
default:
break;
}
}
#endif
#if defined(MALI_SUPPORT) && (MALI_SUPPORT == MALI_T6xx)
GATOR_DEFINE_PROBE(mali_job_slots_event, TP_PROTO(unsigned int event_id, unsigned int tgid, unsigned int pid))
{
unsigned int component, state, unit;
component = (event_id >> 16) & 0xFF; // component is an 8-bit field
state = (event_id >> 24) & 0xF; // state is a 4-bit field
switch (component)
{
case 0:
unit = GPU_UNIT_FP;
break;
case 1:
unit = GPU_UNIT_VP;
break;
case 2:
unit = GPU_UNIT_CL;
break;
default:
unit = GPU_UNIT_NONE;
}
if (unit != GPU_UNIT_NONE)
{
switch(state) {
case EVENT_TYPE_START:
marshal_sched_gpu_start(unit, 0, tgid, (pid != 0 ? pid : tgid));
break;
case EVENT_TYPE_STOP:
marshal_sched_gpu_stop(unit, 0);
break;
default:
/*
* Some jobs can be soft-stopped, so ensure that this terminates the activity trace.
*/
marshal_sched_gpu_stop(unit, 0);
}
}
}
#endif
GATOR_DEFINE_PROBE(gpu_activity_start, TP_PROTO(int gpu_unit, int gpu_core, struct task_struct *p))
{
marshal_sched_gpu_start(gpu_unit, gpu_core, (int)p->tgid, (int)p->pid);
}
GATOR_DEFINE_PROBE(gpu_activity_stop, TP_PROTO(int gpu_unit, int gpu_core))
{
marshal_sched_gpu_stop(gpu_unit, gpu_core);
}
int gator_trace_gpu_start(void)
{
/*
* Returns nonzero for installation failed
* Absence of gpu trace points is not an error
*/
gpu_trace_registered = mali_timeline_trace_registered = mali_job_slots_trace_registered = 0;
#if defined(MALI_SUPPORT) && (MALI_SUPPORT != MALI_T6xx)
if (!GATOR_REGISTER_TRACE(mali_timeline_event)) {
mali_timeline_trace_registered = 1;
}
#endif
#if defined(MALI_SUPPORT) && (MALI_SUPPORT == MALI_T6xx)
if (!GATOR_REGISTER_TRACE(mali_job_slots_event)) {
mali_job_slots_trace_registered = 1;
}
#endif
if (!mali_timeline_trace_registered) {
if (GATOR_REGISTER_TRACE(gpu_activity_start)) {
return 0;
}
if (GATOR_REGISTER_TRACE(gpu_activity_stop)) {
GATOR_UNREGISTER_TRACE(gpu_activity_start);
return 0;
}
gpu_trace_registered = 1;
}
return 0;
}
void gator_trace_gpu_stop(void)
{
#if defined(MALI_SUPPORT) && (MALI_SUPPORT != MALI_T6xx)
if (mali_timeline_trace_registered) {
GATOR_UNREGISTER_TRACE(mali_timeline_event);
}
#endif
#if defined(MALI_SUPPORT) && (MALI_SUPPORT == MALI_T6xx)
if (mali_job_slots_trace_registered) {
GATOR_UNREGISTER_TRACE(mali_job_slots_event);
}
#endif
if (gpu_trace_registered) {
GATOR_UNREGISTER_TRACE(gpu_activity_stop);
GATOR_UNREGISTER_TRACE(gpu_activity_start);
}
gpu_trace_registered = mali_timeline_trace_registered = mali_job_slots_trace_registered = 0;
}
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