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/*
* SPDX-License-Identifier: MIT
*
* Copyright © 2018 Intel Corporation
*/
#ifndef _I915_SCHEDULER_H_
#define _I915_SCHEDULER_H_
#include <linux/bitops.h>
#include <linux/list.h>
#include <linux/kernel.h>
#include "i915_scheduler_types.h"
#include "i915_tasklet.h"
struct drm_printer;
#define priolist_for_each_request(it, plist) \
list_for_each_entry(it, &(plist)->requests, sched.link)
#define priolist_for_each_request_consume(it, n, plist) \
list_for_each_entry_safe(it, n, &(plist)->requests, sched.link)
void i915_sched_node_init(struct i915_sched_node *node);
void i915_sched_node_reinit(struct i915_sched_node *node);
bool __i915_sched_node_add_dependency(struct i915_sched_node *node,
struct i915_sched_node *signal,
struct i915_dependency *dep,
unsigned long flags);
int i915_sched_node_add_dependency(struct i915_sched_node *node,
struct i915_sched_node *signal,
unsigned long flags);
void i915_sched_node_fini(struct i915_sched_node *node);
void i915_schedule(struct i915_request *request,
const struct i915_sched_attr *attr);
struct list_head *
i915_sched_lookup_priolist(struct i915_sched_engine *sched_engine, int prio);
void __i915_priolist_free(struct i915_priolist *p);
static inline void i915_priolist_free(struct i915_priolist *p)
{
if (p->priority != I915_PRIORITY_NORMAL)
__i915_priolist_free(p);
}
struct i915_sched_engine *
i915_sched_engine_create(unsigned int subclass);
static inline struct i915_sched_engine *
i915_sched_engine_get(struct i915_sched_engine *sched_engine)
{
kref_get(&sched_engine->ref);
return sched_engine;
}
static inline void
i915_sched_engine_put(struct i915_sched_engine *sched_engine)
{
kref_put(&sched_engine->ref, sched_engine->destroy);
}
static inline bool
i915_sched_engine_is_empty(struct i915_sched_engine *sched_engine)
{
return RB_EMPTY_ROOT(&sched_engine->queue.rb_root);
}
static inline void
i915_sched_engine_reset_on_empty(struct i915_sched_engine *sched_engine)
{
if (i915_sched_engine_is_empty(sched_engine))
sched_engine->no_priolist = false;
}
static inline void
i915_sched_engine_active_lock_bh(struct i915_sched_engine *sched_engine)
{
local_bh_disable(); /* prevent local softirq and lock recursion */
tasklet_lock(&sched_engine->tasklet);
}
static inline void
i915_sched_engine_active_unlock_bh(struct i915_sched_engine *sched_engine)
{
tasklet_unlock(&sched_engine->tasklet);
local_bh_enable(); /* restore softirq, and kick ksoftirqd! */
}
void i915_request_show_with_schedule(struct drm_printer *m,
const struct i915_request *rq,
const char *prefix,
int indent);
static inline bool
i915_sched_engine_disabled(struct i915_sched_engine *sched_engine)
{
return sched_engine->disabled(sched_engine);
}
void i915_scheduler_module_exit(void);
int i915_scheduler_module_init(void);
#endif /* _I915_SCHEDULER_H_ */
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