drivers/gpu/drm/i915/gt/intel_timeline.h

   1 /*
   2  * Copyright © 2016 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  */
  24
  25 #ifndef I915_TIMELINE_H
  26 #define I915_TIMELINE_H
  27
  28 #include <linux/lockdep.h>
  29
  30 #include "i915_active.h"
  31 #include "i915_syncmap.h"
  32 #include "intel_timeline_types.h"
  33
  34 struct intel_timeline *
  35 __intel_timeline_create(struct intel_gt *gt,
  36                         struct i915_vma *global_hwsp,
  37                         unsigned int offset);
  38
  39 static inline struct intel_timeline *
  40 intel_timeline_create(struct intel_gt *gt)
  41 {
  42         return __intel_timeline_create(gt, NULL, 0);
  43 }
  44
  45 static inline struct intel_timeline *
  46 intel_timeline_create_from_engine(struct intel_engine_cs *engine,
  47                                   unsigned int offset)
  48 {
  49         return __intel_timeline_create(engine->gt,
  50                                        engine->status_page.vma,
  51                                        offset);
  52 }
  53
  54 static inline struct intel_timeline *
  55 intel_timeline_get(struct intel_timeline *timeline)
  56 {
  57         kref_get(&timeline->kref);
  58         return timeline;
  59 }
  60
  61 void __intel_timeline_free(struct kref *kref);
  62 static inline void intel_timeline_put(struct intel_timeline *timeline)
  63 {
  64         kref_put(&timeline->kref, __intel_timeline_free);
  65 }
  66
  67 static inline int __intel_timeline_sync_set(struct intel_timeline *tl,
  68                                             u64 context, u32 seqno)
  69 {
  70         return i915_syncmap_set(&tl->sync, context, seqno);
  71 }
  72
  73 static inline int intel_timeline_sync_set(struct intel_timeline *tl,
  74                                           const struct dma_fence *fence)
  75 {
  76         return __intel_timeline_sync_set(tl, fence->context, fence->seqno);
  77 }
  78
  79 static inline bool __intel_timeline_sync_is_later(struct intel_timeline *tl,
  80                                                   u64 context, u32 seqno)
  81 {
  82         return i915_syncmap_is_later(&tl->sync, context, seqno);
  83 }
  84
  85 static inline bool intel_timeline_sync_is_later(struct intel_timeline *tl,
  86                                                 const struct dma_fence *fence)
  87 {
  88         return __intel_timeline_sync_is_later(tl, fence->context, fence->seqno);
  89 }
  90
  91 void __intel_timeline_pin(struct intel_timeline *tl);
  92 int intel_timeline_pin(struct intel_timeline *tl, struct i915_gem_ww_ctx *ww);
  93 void intel_timeline_enter(struct intel_timeline *tl);
  94 int intel_timeline_get_seqno(struct intel_timeline *tl,
  95                              struct i915_request *rq,
  96                              u32 *seqno);
  97 void intel_timeline_exit(struct intel_timeline *tl);
  98 void intel_timeline_unpin(struct intel_timeline *tl);
  99
 100 void intel_timeline_reset_seqno(const struct intel_timeline *tl);
 101
 102 int intel_timeline_read_hwsp(struct i915_request *from,
 103                              struct i915_request *until,
 104                              u32 *hwsp_offset);
 105
 106 void intel_gt_init_timelines(struct intel_gt *gt);
 107 void intel_gt_fini_timelines(struct intel_gt *gt);
 108
 109 #endif