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 #define priolist_for_each_request(it, plist, idx) \
  17         for (idx = 0; idx < ARRAY_SIZE((plist)->requests); idx++) \
  18                 list_for_each_entry(it, &(plist)->requests[idx], sched.link)
  19
  20 #define priolist_for_each_request_consume(it, n, plist, idx) \
  21         for (; \
  22              (plist)->used ? (idx = __ffs((plist)->used)), 1 : 0; \
  23              (plist)->used &= ~BIT(idx)) \
  24                 list_for_each_entry_safe(it, n, \
  25                                          &(plist)->requests[idx], \
  26                                          sched.link)
  27
  28 void i915_sched_node_init(struct i915_sched_node *node);
  29 void i915_sched_node_reinit(struct i915_sched_node *node);
  30
  31 bool __i915_sched_node_add_dependency(struct i915_sched_node *node,
  32                                       struct i915_sched_node *signal,
  33                                       struct i915_dependency *dep,
  34                                       unsigned long flags);
  35
  36 int i915_sched_node_add_dependency(struct i915_sched_node *node,
  37                                    struct i915_sched_node *signal,
  38                                    unsigned long flags);
  39
  40 void i915_sched_node_fini(struct i915_sched_node *node);
  41
  42 void i915_schedule(struct i915_request *request,
  43                    const struct i915_sched_attr *attr);
  44
  45 void i915_schedule_bump_priority(struct i915_request *rq, unsigned int bump);
  46
  47 struct list_head *
  48 i915_sched_lookup_priolist(struct intel_engine_cs *engine, int prio);
  49
  50 void __i915_priolist_free(struct i915_priolist *p);
  51 static inline void i915_priolist_free(struct i915_priolist *p)
  52 {
  53         if (p->priority != I915_PRIORITY_NORMAL)
  54                 __i915_priolist_free(p);
  55 }
  56
  57 #endif /* _I915_SCHEDULER_H_ */