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 <drm/drmP.h>
  27 #include <drm/drm.h>
  28
  29 #include "qxl_drv.h"
  30 #include "qxl_object.h"
  31
  32 void qxl_gem_object_free(struct drm_gem_object *gobj)
  33 {
  34         struct qxl_bo *qobj = gem_to_qxl_bo(gobj);
  35         struct qxl_device *qdev;
  36         struct ttm_buffer_object *tbo;
  37
  38         qdev = (struct qxl_device *)gobj->dev->dev_private;
  39
  40         qxl_surface_evict(qdev, qobj, false);
  41
  42         tbo = &qobj->tbo;
  43         ttm_bo_unref(&tbo);
  44 }
  45
  46 int qxl_gem_object_create(struct qxl_device *qdev, int size,
  47                           int alignment, int initial_domain,
  48                           bool discardable, bool kernel,
  49                           struct qxl_surface *surf,
  50                           struct drm_gem_object **obj)
  51 {
  52         struct qxl_bo *qbo;
  53         int r;
  54
  55         *obj = NULL;
  56         /* At least align on page size */
  57         if (alignment < PAGE_SIZE)
  58                 alignment = PAGE_SIZE;
  59         r = qxl_bo_create(qdev, size, kernel, false, initial_domain, surf, &qbo);
  60         if (r) {
  61                 if (r != -ERESTARTSYS)
  62                         DRM_ERROR(
  63                         "Failed to allocate GEM object (%d, %d, %u, %d)\n",
  64                                   size, initial_domain, alignment, r);
  65                 return r;
  66         }
  67         *obj = &qbo->gem_base;
  68
  69         mutex_lock(&qdev->gem.mutex);
  70         list_add_tail(&qbo->list, &qdev->gem.objects);
  71         mutex_unlock(&qdev->gem.mutex);
  72
  73         return 0;
  74 }
  75
  76 int qxl_gem_object_create_with_handle(struct qxl_device *qdev,
  77                                       struct drm_file *file_priv,
  78                                       u32 domain,
  79                                       size_t size,
  80                                       struct qxl_surface *surf,
  81                                       struct qxl_bo **qobj,
  82                                       uint32_t *handle)
  83 {
  84         struct drm_gem_object *gobj;
  85         int r;
  86
  87         BUG_ON(!qobj);
  88         BUG_ON(!handle);
  89
  90         r = qxl_gem_object_create(qdev, size, 0,
  91                                   domain,
  92                                   false, false, surf,
  93                                   &gobj);
  94         if (r)
  95                 return -ENOMEM;
  96         r = drm_gem_handle_create(file_priv, gobj, handle);
  97         if (r)
  98                 return r;
  99         /* drop reference from allocate - handle holds it now */
 100         *qobj = gem_to_qxl_bo(gobj);
 101         drm_gem_object_put_unlocked(gobj);
 102         return 0;
 103 }
 104
 105 int qxl_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
 106 {
 107         return 0;
 108 }
 109
 110 void qxl_gem_object_close(struct drm_gem_object *obj,
 111                           struct drm_file *file_priv)
 112 {
 113 }
 114
 115 void qxl_gem_init(struct qxl_device *qdev)
 116 {
 117         INIT_LIST_HEAD(&qdev->gem.objects);
 118 }
 119
 120 void qxl_gem_fini(struct qxl_device *qdev)
 121 {
 122         qxl_bo_force_delete(qdev);
 123 }