drivers/gpu/drm/i915/selftests/mock_engine.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 __MOCK_ENGINE_H__
  26 #define __MOCK_ENGINE_H__
  27
  28 #include <linux/list.h>
  29 #include <linux/spinlock.h>
  30 #include <linux/timer.h>
  31
  32 #include "../intel_ringbuffer.h"
  33
  34 struct mock_engine {
  35         struct intel_engine_cs base;
  36
  37         spinlock_t hw_lock;
  38         struct list_head hw_queue;
  39         struct timer_list hw_delay;
  40 };
  41
  42 struct intel_engine_cs *mock_engine(struct drm_i915_private *i915,
  43                                     const char *name);
  44 void mock_engine_flush(struct intel_engine_cs *engine);
  45 void mock_engine_reset(struct intel_engine_cs *engine);
  46 void mock_engine_free(struct intel_engine_cs *engine);
  47
  48 static inline void mock_seqno_advance(struct intel_engine_cs *engine, u32 seqno)
  49 {
  50         intel_write_status_page(engine, I915_GEM_HWS_INDEX, seqno);
  51         intel_engine_wakeup(engine);
  52 }
  53
  54 #endif /* !__MOCK_ENGINE_H__ */