drivers/gpu/drm/i915/i915_scheduler.h

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright © 2018 Intel Corporation
   5  */
   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
  16 struct drm_printer;
  17
  18 #define priolist_for_each_request(it, plist) \
  19         list_for_each_entry(it, &(plist)->requests, sched.link)
  20
  21 #define priolist_for_each_request_consume(it, n, plist) \
  22         list_for_each_entry_safe(it, n, &(plist)->requests, sched.link)
  23
  24 void i915_sched_node_init(struct i915_sched_node *node);
  25 void i915_sched_node_reinit(struct i915_sched_node *node);
  26
  27 bool __i915_sched_node_add_dependency(struct i915_sched_node *node,
  28                                       struct i915_sched_node *signal,
  29                                       struct i915_dependency *dep,
  30                                       unsigned long flags);
  31
  32 int i915_sched_node_add_dependency(struct i915_sched_node *node,
  33                                    struct i915_sched_node *signal,
  34                                    unsigned long flags);
  35
  36 void i915_sched_node_fini(struct i915_sched_node *node);
  37
  38 void i915_schedule(struct i915_request *request,
  39                    const struct i915_sched_attr *attr);
  40
  41 struct list_head *
  42 i915_sched_lookup_priolist(struct intel_engine_cs *engine, int prio);
  43
  44 void __i915_priolist_free(struct i915_priolist *p);
  45 static inline void i915_priolist_free(struct i915_priolist *p)
  46 {
  47         if (p->priority != I915_PRIORITY_NORMAL)
  48                 __i915_priolist_free(p);
  49 }
  50
  51 struct i915_sched_engine *
  52 i915_sched_engine_create(unsigned int subclass);
  53
  54 void i915_sched_engine_free(struct kref *kref);
  55
  56 static inline struct i915_sched_engine *
  57 i915_sched_engine_get(struct i915_sched_engine *sched_engine)
  58 {
  59         kref_get(&sched_engine->ref);
  60         return sched_engine;
  61 }
  62
  63 static inline void
  64 i915_sched_engine_put(struct i915_sched_engine *sched_engine)
  65 {
  66         kref_put(&sched_engine->ref, i915_sched_engine_free);
  67 }
  68
  69 static inline bool
  70 i915_sched_engine_is_empty(struct i915_sched_engine *sched_engine)
  71 {
  72         return RB_EMPTY_ROOT(&sched_engine->queue.rb_root);
  73 }
  74
  75 static inline void
  76 i915_sched_engine_reset_on_empty(struct i915_sched_engine *sched_engine)
  77 {
  78         if (i915_sched_engine_is_empty(sched_engine))
  79                 sched_engine->no_priolist = false;
  80 }
  81
  82 void i915_request_show_with_schedule(struct drm_printer *m,
  83                                      const struct i915_request *rq,
  84                                      const char *prefix,
  85                                      int indent);
  86
  87 #endif /* _I915_SCHEDULER_H_ */