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       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                 :          0 : intel_timeline_get(struct intel_timeline *timeline)
      44                 :            : {
      45                 :          0 :         kref_get(&timeline->kref);
      46         [ #  # ]:          0 :         return timeline;
      47                 :            : }
      48                 :            : 
      49                 :            : void __intel_timeline_free(struct kref *kref);
      50                 :          0 : static inline void intel_timeline_put(struct intel_timeline *timeline)
      51                 :            : {
      52                 :          0 :         kref_put(&timeline->kref, __intel_timeline_free);
      53                 :          0 : }
      54                 :            : 
      55                 :          0 : static inline int __intel_timeline_sync_set(struct intel_timeline *tl,
      56                 :            :                                             u64 context, u32 seqno)
      57                 :            : {
      58                 :          0 :         return i915_syncmap_set(&tl->sync, context, seqno);
      59                 :            : }
      60                 :            : 
      61                 :          0 : static inline int intel_timeline_sync_set(struct intel_timeline *tl,
      62                 :            :                                           const struct dma_fence *fence)
      63                 :            : {
      64                 :          0 :         return __intel_timeline_sync_set(tl, fence->context, fence->seqno);
      65                 :            : }
      66                 :            : 
      67                 :          0 : static inline bool __intel_timeline_sync_is_later(struct intel_timeline *tl,
      68                 :            :                                                   u64 context, u32 seqno)
      69                 :            : {
      70                 :          0 :         return i915_syncmap_is_later(&tl->sync, context, seqno);
      71                 :            : }
      72                 :            : 
      73                 :          0 : static inline bool intel_timeline_sync_is_later(struct intel_timeline *tl,
      74                 :            :                                                 const struct dma_fence *fence)
      75                 :            : {
      76                 :          0 :         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