drivers/gpu/drm/i915/selftests/mock_context.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_context.h"
  26 #include "mock_gtt.h"
  27
  28 struct i915_gem_context *
  29 mock_context(struct drm_i915_private *i915,
  30              const char *name)
  31 {
  32         struct i915_gem_context *ctx;
  33         unsigned int n;
  34         int ret;
  35
  36         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
  37         if (!ctx)
  38                 return NULL;
  39
  40         kref_init(&ctx->ref);
  41         INIT_LIST_HEAD(&ctx->link);
  42         ctx->i915 = i915;
  43
  44         INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL);
  45         INIT_LIST_HEAD(&ctx->handles_list);
  46         INIT_LIST_HEAD(&ctx->hw_id_link);
  47
  48         for (n = 0; n < ARRAY_SIZE(ctx->__engine); n++) {
  49                 struct intel_context *ce = &ctx->__engine[n];
  50
  51                 ce->gem_context = ctx;
  52         }
  53
  54         ret = i915_gem_context_pin_hw_id(ctx);
  55         if (ret < 0)
  56                 goto err_handles;
  57
  58         if (name) {
  59                 ctx->name = kstrdup(name, GFP_KERNEL);
  60                 if (!ctx->name)
  61                         goto err_put;
  62
  63                 ctx->ppgtt = mock_ppgtt(i915, name);
  64                 if (!ctx->ppgtt)
  65                         goto err_put;
  66         }
  67
  68         return ctx;
  69
  70 err_handles:
  71         kfree(ctx);
  72         return NULL;
  73
  74 err_put:
  75         i915_gem_context_set_closed(ctx);
  76         i915_gem_context_put(ctx);
  77         return NULL;
  78 }
  79
  80 void mock_context_close(struct i915_gem_context *ctx)
  81 {
  82         context_close(ctx);
  83 }
  84
  85 void mock_init_contexts(struct drm_i915_private *i915)
  86 {
  87         init_contexts(i915);
  88 }
  89
  90 struct i915_gem_context *
  91 live_context(struct drm_i915_private *i915, struct drm_file *file)
  92 {
  93         lockdep_assert_held(&i915->drm.struct_mutex);
  94
  95         return i915_gem_create_context(i915, file->driver_priv);
  96 }
  97
  98 struct i915_gem_context *
  99 kernel_context(struct drm_i915_private *i915)
 100 {
 101         return i915_gem_context_create_kernel(i915, I915_PRIORITY_NORMAL);
 102 }
 103
 104 void kernel_context_close(struct i915_gem_context *ctx)
 105 {
 106         context_close(ctx);
 107 }