LXR linux/drivers/gpu/drm/i915/gt/intel

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