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