LXR linux/drivers/gpu/drm/i915/i915

   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 "i915_timeline_types.h"
  33
  34int i915_timeline_init(struct drm_i915_private *i915,
  35                       struct i915_timeline *tl,
  36                       struct i915_vma *hwsp);
  37void i915_timeline_fini(struct i915_timeline *tl);
  38
  39struct i915_timeline *
  40i915_timeline_create(struct drm_i915_private *i915,
  41                     struct i915_vma *global_hwsp);
  42
  43static inline struct i915_timeline *
  44i915_timeline_get(struct i915_timeline *timeline)
  45{
  46        kref_get(&timeline->kref);
  47        return timeline;
  48}
  49
  50void __i915_timeline_free(struct kref *kref);
  51static inline void i915_timeline_put(struct i915_timeline *timeline)
  52{
  53        kref_put(&timeline->kref, __i915_timeline_free);
  54}
  55
  56static inline int __i915_timeline_sync_set(struct i915_timeline *tl,
  57                                           u64 context, u32 seqno)
  58{
  59        return i915_syncmap_set(&tl->sync, context, seqno);
  60}
  61
  62static inline int i915_timeline_sync_set(struct i915_timeline *tl,
  63                                         const struct dma_fence *fence)
  64{
  65        return __i915_timeline_sync_set(tl, fence->context, fence->seqno);
  66}
  67
  68static inline bool __i915_timeline_sync_is_later(struct i915_timeline *tl,
  69                                                 u64 context, u32 seqno)
  70{
  71        return i915_syncmap_is_later(&tl->sync, context, seqno);
  72}
  73
  74static inline bool i915_timeline_sync_is_later(struct i915_timeline *tl,
  75                                               const struct dma_fence *fence)
  76{
  77        return __i915_timeline_sync_is_later(tl, fence->context, fence->seqno);
  78}
  79
  80int i915_timeline_pin(struct i915_timeline *tl);
  81int i915_timeline_get_seqno(struct i915_timeline *tl,
  82                            struct i915_request *rq,
  83                            u32 *seqno);
  84void i915_timeline_unpin(struct i915_timeline *tl);
  85
  86int i915_timeline_read_hwsp(struct i915_request *from,
  87                            struct i915_request *until,
  88                            u32 *hwsp_offset);
  89
  90void i915_timelines_init(struct drm_i915_private *i915);
  91void i915_timelines_park(struct drm_i915_private *i915);
  92void i915_timelines_fini(struct drm_i915_private *i915);
  93
  94#endif
  95