drivers/gpu/drm/i915/selftests/mock_request.c

   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 #include "mock_engine.h"
  26 #include "mock_request.h"
  27
  28 struct drm_i915_gem_request *
  29 mock_request(struct intel_engine_cs *engine,
  30              struct i915_gem_context *context,
  31              unsigned long delay)
  32 {
  33         struct drm_i915_gem_request *request;
  34         struct mock_request *mock;
  35
  36         /* NB the i915->requests slab cache is enlarged to fit mock_request */
  37         request = i915_gem_request_alloc(engine, context);
  38         if (IS_ERR(request))
  39                 return NULL;
  40
  41         mock = container_of(request, typeof(*mock), base);
  42         mock->delay = delay;
  43
  44         return &mock->base;
  45 }
  46
  47 bool mock_cancel_request(struct drm_i915_gem_request *request)
  48 {
  49         struct mock_request *mock = container_of(request, typeof(*mock), base);
  50         struct mock_engine *engine =
  51                 container_of(request->engine, typeof(*engine), base);
  52         bool was_queued;
  53
  54         spin_lock_irq(&engine->hw_lock);
  55         was_queued = !list_empty(&mock->link);
  56         list_del_init(&mock->link);
  57         spin_unlock_irq(&engine->hw_lock);
  58
  59         if (was_queued)
  60                 i915_gem_request_unsubmit(request);
  61
  62         return was_queued;
  63 }