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1/*2 * SPDX-License-Identifier: MIT3 *4 * Copyright © 2018 Intel Corporation5 */6 7#ifndef _I915_SCHEDULER_H_8#define _I915_SCHEDULER_H_9 10#include <linux/bitops.h>11#include <linux/list.h>12#include <linux/kernel.h>13 14#include "i915_scheduler_types.h"15#include "i915_tasklet.h"16 17struct drm_printer;18 19#define priolist_for_each_request(it, plist) \20 list_for_each_entry(it, &(plist)->requests, sched.link)21 22#define priolist_for_each_request_consume(it, n, plist) \23 list_for_each_entry_safe(it, n, &(plist)->requests, sched.link)24 25void i915_sched_node_init(struct i915_sched_node *node);26void i915_sched_node_reinit(struct i915_sched_node *node);27 28bool __i915_sched_node_add_dependency(struct i915_sched_node *node,29 struct i915_sched_node *signal,30 struct i915_dependency *dep,31 unsigned long flags);32 33int i915_sched_node_add_dependency(struct i915_sched_node *node,34 struct i915_sched_node *signal,35 unsigned long flags);36 37void i915_sched_node_fini(struct i915_sched_node *node);38 39void i915_schedule(struct i915_request *request,40 const struct i915_sched_attr *attr);41 42struct list_head *43i915_sched_lookup_priolist(struct i915_sched_engine *sched_engine, int prio);44 45void __i915_priolist_free(struct i915_priolist *p);46static inline void i915_priolist_free(struct i915_priolist *p)47{48 if (p->priority != I915_PRIORITY_NORMAL)49 __i915_priolist_free(p);50}51 52struct i915_sched_engine *53i915_sched_engine_create(unsigned int subclass);54 55static inline struct i915_sched_engine *56i915_sched_engine_get(struct i915_sched_engine *sched_engine)57{58 kref_get(&sched_engine->ref);59 return sched_engine;60}61 62static inline void63i915_sched_engine_put(struct i915_sched_engine *sched_engine)64{65 kref_put(&sched_engine->ref, sched_engine->destroy);66}67 68static inline bool69i915_sched_engine_is_empty(struct i915_sched_engine *sched_engine)70{71 return RB_EMPTY_ROOT(&sched_engine->queue.rb_root);72}73 74static inline void75i915_sched_engine_reset_on_empty(struct i915_sched_engine *sched_engine)76{77 if (i915_sched_engine_is_empty(sched_engine))78 sched_engine->no_priolist = false;79}80 81static inline void82i915_sched_engine_active_lock_bh(struct i915_sched_engine *sched_engine)83{84 local_bh_disable(); /* prevent local softirq and lock recursion */85 tasklet_lock(&sched_engine->tasklet);86}87 88static inline void89i915_sched_engine_active_unlock_bh(struct i915_sched_engine *sched_engine)90{91 tasklet_unlock(&sched_engine->tasklet);92 local_bh_enable(); /* restore softirq, and kick ksoftirqd! */93}94 95void i915_request_show_with_schedule(struct drm_printer *m,96 const struct i915_request *rq,97 const char *prefix,98 int indent);99 100static inline bool101i915_sched_engine_disabled(struct i915_sched_engine *sched_engine)102{103 return sched_engine->disabled(sched_engine);104}105 106void i915_scheduler_module_exit(void);107int i915_scheduler_module_init(void);108 109#endif /* _I915_SCHEDULER_H_ */110