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 "gt/intel_timeline_types.h"
  33
  34 int intel_timeline_init(struct intel_timeline *tl,
  35                         struct intel_gt *gt,
  36                         struct i915_vma *hwsp);
  37 void intel_timeline_fini(struct intel_timeline *tl);
  38
  39 struct intel_timeline *
  40 intel_timeline_create(struct intel_gt *gt, struct i915_vma *global_hwsp);
  41
  42 static inline struct intel_timeline *
  43 intel_timeline_get(struct intel_timeline *timeline)
  44 {
  45         kref_get(&timeline->kref);
  46         return timeline;
  47 }
  48
  49 void __intel_timeline_free(struct kref *kref);
  50 static inline void intel_timeline_put(struct intel_timeline *timeline)
  51 {
  52         kref_put(&timeline->kref, __intel_timeline_free);
  53 }
  54
  55 static inline int __intel_timeline_sync_set(struct intel_timeline *tl,
  56                                             u64 context, u32 seqno)
  57 {
  58         return i915_syncmap_set(&tl->sync, context, seqno);
  59 }
  60
  61 static inline int intel_timeline_sync_set(struct intel_timeline *tl,
  62                                           const struct dma_fence *fence)
  63 {
  64         return __intel_timeline_sync_set(tl, fence->context, fence->seqno);
  65 }
  66
  67 static inline bool __intel_timeline_sync_is_later(struct intel_timeline *tl,
  68                                                   u64 context, u32 seqno)
  69 {
  70         return i915_syncmap_is_later(&tl->sync, context, seqno);
  71 }
  72
  73 static inline bool intel_timeline_sync_is_later(struct intel_timeline *tl,
  74                                                 const struct dma_fence *fence)
  75 {
  76         return __intel_timeline_sync_is_later(tl, fence->context, fence->seqno);
  77 }
  78
  79 int intel_timeline_pin(struct intel_timeline *tl);
  80 void intel_timeline_enter(struct intel_timeline *tl);
  81 int intel_timeline_get_seqno(struct intel_timeline *tl,
  82                              struct i915_request *rq,
  83                              u32 *seqno);
  84 void intel_timeline_exit(struct intel_timeline *tl);
  85 void intel_timeline_unpin(struct intel_timeline *tl);
  86
  87 int intel_timeline_read_hwsp(struct i915_request *from,
  88                              struct i915_request *until,
  89                              u32 *hwsp_offset);
  90
  91 void intel_gt_init_timelines(struct intel_gt *gt);
  92 void intel_gt_fini_timelines(struct intel_gt *gt);
  93
  94 #endif