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/*
*
* (C) COPYRIGHT 2012-2016 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained
* from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include <mali_kbase.h>
#include <mali_kbase_jm.h>
#include <mali_kbase_hwaccess_jm.h>
#define CREATE_TRACE_POINTS
#ifdef CONFIG_MALI_TRACE_TIMELINE
#include "mali_timeline.h"
#include <linux/debugfs.h>
#include <linux/seq_file.h>
EXPORT_TRACEPOINT_SYMBOL_GPL(mali_timeline_atoms_in_flight);
EXPORT_TRACEPOINT_SYMBOL_GPL(mali_timeline_atom);
EXPORT_TRACEPOINT_SYMBOL_GPL(mali_timeline_gpu_slot_active);
EXPORT_TRACEPOINT_SYMBOL_GPL(mali_timeline_gpu_slot_action);
EXPORT_TRACEPOINT_SYMBOL_GPL(mali_timeline_gpu_power_active);
EXPORT_TRACEPOINT_SYMBOL_GPL(mali_timeline_l2_power_active);
EXPORT_TRACEPOINT_SYMBOL_GPL(mali_timeline_pm_event);
EXPORT_TRACEPOINT_SYMBOL_GPL(mali_timeline_slot_atom);
EXPORT_TRACEPOINT_SYMBOL_GPL(mali_timeline_pm_checktrans);
EXPORT_TRACEPOINT_SYMBOL_GPL(mali_timeline_context_active);
struct kbase_trace_timeline_desc {
char *enum_str;
char *desc;
char *format;
char *format_desc;
};
static struct kbase_trace_timeline_desc kbase_trace_timeline_desc_table[] = {
#define KBASE_TIMELINE_TRACE_CODE(enum_val, desc, format, format_desc) { #enum_val, desc, format, format_desc }
#include "mali_kbase_trace_timeline_defs.h"
#undef KBASE_TIMELINE_TRACE_CODE
};
#define KBASE_NR_TRACE_CODES ARRAY_SIZE(kbase_trace_timeline_desc_table)
static void *kbasep_trace_timeline_seq_start(struct seq_file *s, loff_t *pos)
{
if (*pos >= KBASE_NR_TRACE_CODES)
return NULL;
return &kbase_trace_timeline_desc_table[*pos];
}
static void kbasep_trace_timeline_seq_stop(struct seq_file *s, void *data)
{
}
static void *kbasep_trace_timeline_seq_next(struct seq_file *s, void *data, loff_t *pos)
{
(*pos)++;
if (*pos == KBASE_NR_TRACE_CODES)
return NULL;
return &kbase_trace_timeline_desc_table[*pos];
}
static int kbasep_trace_timeline_seq_show(struct seq_file *s, void *data)
{
struct kbase_trace_timeline_desc *trace_desc = data;
seq_printf(s, "%s#%s#%s#%s\n", trace_desc->enum_str, trace_desc->desc, trace_desc->format, trace_desc->format_desc);
return 0;
}
static const struct seq_operations kbasep_trace_timeline_seq_ops = {
.start = kbasep_trace_timeline_seq_start,
.next = kbasep_trace_timeline_seq_next,
.stop = kbasep_trace_timeline_seq_stop,
.show = kbasep_trace_timeline_seq_show,
};
static int kbasep_trace_timeline_debugfs_open(struct inode *inode, struct file *file)
{
return seq_open(file, &kbasep_trace_timeline_seq_ops);
}
static const struct file_operations kbasep_trace_timeline_debugfs_fops = {
.open = kbasep_trace_timeline_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release,
};
#ifdef CONFIG_DEBUG_FS
void kbasep_trace_timeline_debugfs_init(struct kbase_device *kbdev)
{
debugfs_create_file("mali_timeline_defs",
S_IRUGO, kbdev->mali_debugfs_directory, NULL,
&kbasep_trace_timeline_debugfs_fops);
}
#endif /* CONFIG_DEBUG_FS */
void kbase_timeline_job_slot_submit(struct kbase_device *kbdev, struct kbase_context *kctx,
struct kbase_jd_atom *katom, int js)
{
lockdep_assert_held(&kbdev->hwaccess_lock);
if (kbdev->timeline.slot_atoms_submitted[js] > 0) {
KBASE_TIMELINE_JOB_START_NEXT(kctx, js, 1);
} else {
base_atom_id atom_number = kbase_jd_atom_id(kctx, katom);
KBASE_TIMELINE_JOB_START_HEAD(kctx, js, 1);
KBASE_TIMELINE_JOB_START(kctx, js, atom_number);
}
++kbdev->timeline.slot_atoms_submitted[js];
KBASE_TIMELINE_ATOMS_SUBMITTED(kctx, js, kbdev->timeline.slot_atoms_submitted[js]);
}
void kbase_timeline_job_slot_done(struct kbase_device *kbdev, struct kbase_context *kctx,
struct kbase_jd_atom *katom, int js,
kbasep_js_atom_done_code done_code)
{
lockdep_assert_held(&kbdev->hwaccess_lock);
if (done_code & KBASE_JS_ATOM_DONE_EVICTED_FROM_NEXT) {
KBASE_TIMELINE_JOB_START_NEXT(kctx, js, 0);
} else {
/* Job finished in JS_HEAD */
base_atom_id atom_number = kbase_jd_atom_id(kctx, katom);
KBASE_TIMELINE_JOB_START_HEAD(kctx, js, 0);
KBASE_TIMELINE_JOB_STOP(kctx, js, atom_number);
/* see if we need to trace the job in JS_NEXT moving to JS_HEAD */
if (kbase_backend_nr_atoms_submitted(kbdev, js)) {
struct kbase_jd_atom *next_katom;
struct kbase_context *next_kctx;
/* Peek the next atom - note that the atom in JS_HEAD will already
* have been dequeued */
next_katom = kbase_backend_inspect_head(kbdev, js);
WARN_ON(!next_katom);
next_kctx = next_katom->kctx;
KBASE_TIMELINE_JOB_START_NEXT(next_kctx, js, 0);
KBASE_TIMELINE_JOB_START_HEAD(next_kctx, js, 1);
KBASE_TIMELINE_JOB_START(next_kctx, js, kbase_jd_atom_id(next_kctx, next_katom));
}
}
--kbdev->timeline.slot_atoms_submitted[js];
KBASE_TIMELINE_ATOMS_SUBMITTED(kctx, js, kbdev->timeline.slot_atoms_submitted[js]);
}
void kbase_timeline_pm_send_event(struct kbase_device *kbdev, enum kbase_timeline_pm_event event_sent)
{
int uid = 0;
int old_uid;
/* If a producer already exists for the event, try to use their UID (multiple-producers) */
uid = atomic_read(&kbdev->timeline.pm_event_uid[event_sent]);
old_uid = uid;
/* Get a new non-zero UID if we don't have one yet */
while (!uid)
uid = atomic_inc_return(&kbdev->timeline.pm_event_uid_counter);
/* Try to use this UID */
if (old_uid != atomic_cmpxchg(&kbdev->timeline.pm_event_uid[event_sent], old_uid, uid))
/* If it changed, raced with another producer: we've lost this UID */
uid = 0;
KBASE_TIMELINE_PM_SEND_EVENT(kbdev, event_sent, uid);
}
void kbase_timeline_pm_check_handle_event(struct kbase_device *kbdev, enum kbase_timeline_pm_event event)
{
int uid = atomic_read(&kbdev->timeline.pm_event_uid[event]);
if (uid != 0) {
if (uid != atomic_cmpxchg(&kbdev->timeline.pm_event_uid[event], uid, 0))
/* If it changed, raced with another consumer: we've lost this UID */
uid = 0;
KBASE_TIMELINE_PM_HANDLE_EVENT(kbdev, event, uid);
}
}
void kbase_timeline_pm_handle_event(struct kbase_device *kbdev, enum kbase_timeline_pm_event event)
{
int uid = atomic_read(&kbdev->timeline.pm_event_uid[event]);
if (uid != atomic_cmpxchg(&kbdev->timeline.pm_event_uid[event], uid, 0))
/* If it changed, raced with another consumer: we've lost this UID */
uid = 0;
KBASE_TIMELINE_PM_HANDLE_EVENT(kbdev, event, uid);
}
void kbase_timeline_pm_l2_transition_start(struct kbase_device *kbdev)
{
lockdep_assert_held(&kbdev->hwaccess_lock);
/* Simply log the start of the transition */
kbdev->timeline.l2_transitioning = true;
KBASE_TIMELINE_POWERING_L2(kbdev);
}
void kbase_timeline_pm_l2_transition_done(struct kbase_device *kbdev)
{
lockdep_assert_held(&kbdev->hwaccess_lock);
/* Simply log the end of the transition */
if (kbdev->timeline.l2_transitioning) {
kbdev->timeline.l2_transitioning = false;
KBASE_TIMELINE_POWERED_L2(kbdev);
}
}
#endif /* CONFIG_MALI_TRACE_TIMELINE */
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