drivers/gpu/drm/qxl/qxl_gem.c

   1 /*
   2  * Copyright 2013 Red Hat Inc.
   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 shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Dave Airlie
  23  *          Alon Levy
  24  */
  25
  26 #include "drmP.h"
  27 #include "drm/drm.h"
  28 #include "qxl_drv.h"
  29 #include "qxl_object.h"
  30
  31 void qxl_gem_object_free(struct drm_gem_object *gobj)
  32 {
  33         struct qxl_bo *qobj = gem_to_qxl_bo(gobj);
  34
  35         if (qobj)
  36                 qxl_bo_unref(&qobj);
  37 }
  38
  39 int qxl_gem_object_create(struct qxl_device *qdev, int size,
  40                           int alignment, int initial_domain,
  41                           bool discardable, bool kernel,
  42                           struct qxl_surface *surf,
  43                           struct drm_gem_object **obj)
  44 {
  45         struct qxl_bo *qbo;
  46         int r;
  47
  48         *obj = NULL;
  49         /* At least align on page size */
  50         if (alignment < PAGE_SIZE)
  51                 alignment = PAGE_SIZE;
  52         r = qxl_bo_create(qdev, size, kernel, false, initial_domain, surf, &qbo);
  53         if (r) {
  54                 if (r != -ERESTARTSYS)
  55                         DRM_ERROR(
  56                         "Failed to allocate GEM object (%d, %d, %u, %d)\n",
  57                                   size, initial_domain, alignment, r);
  58                 return r;
  59         }
  60         *obj = &qbo->gem_base;
  61
  62         mutex_lock(&qdev->gem.mutex);
  63         list_add_tail(&qbo->list, &qdev->gem.objects);
  64         mutex_unlock(&qdev->gem.mutex);
  65
  66         return 0;
  67 }
  68
  69 int qxl_gem_object_create_with_handle(struct qxl_device *qdev,
  70                                       struct drm_file *file_priv,
  71                                       u32 domain,
  72                                       size_t size,
  73                                       struct qxl_surface *surf,
  74                                       struct qxl_bo **qobj,
  75                                       uint32_t *handle)
  76 {
  77         struct drm_gem_object *gobj;
  78         int r;
  79
  80         BUG_ON(!qobj);
  81         BUG_ON(!handle);
  82
  83         r = qxl_gem_object_create(qdev, size, 0,
  84                                   domain,
  85                                   false, false, surf,
  86                                   &gobj);
  87         if (r)
  88                 return -ENOMEM;
  89         r = drm_gem_handle_create(file_priv, gobj, handle);
  90         if (r)
  91                 return r;
  92         /* drop reference from allocate - handle holds it now */
  93         *qobj = gem_to_qxl_bo(gobj);
  94         drm_gem_object_unreference_unlocked(gobj);
  95         return 0;
  96 }
  97
  98 int qxl_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
  99 {
 100         return 0;
 101 }
 102
 103 void qxl_gem_object_close(struct drm_gem_object *obj,
 104                           struct drm_file *file_priv)
 105 {
 106 }
 107
 108 int qxl_gem_init(struct qxl_device *qdev)
 109 {
 110         INIT_LIST_HEAD(&qdev->gem.objects);
 111         return 0;
 112 }
 113
 114 void qxl_gem_fini(struct qxl_device *qdev)
 115 {
 116         qxl_bo_force_delete(qdev);
 117 }