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 int qxl_gem_object_init(struct drm_gem_object *obj)
  32 {
  33         /* we do nothings here */
  34         return 0;
  35 }
  36
  37 void qxl_gem_object_free(struct drm_gem_object *gobj)
  38 {
  39         struct qxl_bo *qobj = gem_to_qxl_bo(gobj);
  40
  41         if (qobj)
  42                 qxl_bo_unref(&qobj);
  43 }
  44
  45 int qxl_gem_object_create(struct qxl_device *qdev, int size,
  46                           int alignment, int initial_domain,
  47                           bool discardable, bool kernel,
  48                           struct qxl_surface *surf,
  49                           struct drm_gem_object **obj)
  50 {
  51         struct qxl_bo *qbo;
  52         int r;
  53
  54         *obj = NULL;
  55         /* At least align on page size */
  56         if (alignment < PAGE_SIZE)
  57                 alignment = PAGE_SIZE;
  58         r = qxl_bo_create(qdev, size, kernel, false, initial_domain, surf, &qbo);
  59         if (r) {
  60                 if (r != -ERESTARTSYS)
  61                         DRM_ERROR(
  62                         "Failed to allocate GEM object (%d, %d, %u, %d)\n",
  63                                   size, initial_domain, alignment, r);
  64                 return r;
  65         }
  66         *obj = &qbo->gem_base;
  67
  68         mutex_lock(&qdev->gem.mutex);
  69         list_add_tail(&qbo->list, &qdev->gem.objects);
  70         mutex_unlock(&qdev->gem.mutex);
  71
  72         return 0;
  73 }
  74
  75 int qxl_gem_object_create_with_handle(struct qxl_device *qdev,
  76                                       struct drm_file *file_priv,
  77                                       u32 domain,
  78                                       size_t size,
  79                                       struct qxl_surface *surf,
  80                                       struct qxl_bo **qobj,
  81                                       uint32_t *handle)
  82 {
  83         struct drm_gem_object *gobj;
  84         int r;
  85
  86         BUG_ON(!qobj);
  87         BUG_ON(!handle);
  88
  89         r = qxl_gem_object_create(qdev, size, 0,
  90                                   domain,
  91                                   false, false, surf,
  92                                   &gobj);
  93         if (r)
  94                 return -ENOMEM;
  95         r = drm_gem_handle_create(file_priv, gobj, handle);
  96         if (r)
  97                 return r;
  98         /* drop reference from allocate - handle holds it now */
  99         *qobj = gem_to_qxl_bo(gobj);
 100         drm_gem_object_unreference_unlocked(gobj);
 101         return 0;
 102 }
 103
 104 int qxl_gem_object_pin(struct drm_gem_object *obj, uint32_t pin_domain,
 105                           uint64_t *gpu_addr)
 106 {
 107         struct qxl_bo *qobj = obj->driver_private;
 108         int r;
 109
 110         r = qxl_bo_reserve(qobj, false);
 111         if (unlikely(r != 0))
 112                 return r;
 113         r = qxl_bo_pin(qobj, pin_domain, gpu_addr);
 114         qxl_bo_unreserve(qobj);
 115         return r;
 116 }
 117
 118 void qxl_gem_object_unpin(struct drm_gem_object *obj)
 119 {
 120         struct qxl_bo *qobj = obj->driver_private;
 121         int r;
 122
 123         r = qxl_bo_reserve(qobj, false);
 124         if (likely(r == 0)) {
 125                 qxl_bo_unpin(qobj);
 126                 qxl_bo_unreserve(qobj);
 127         }
 128 }
 129
 130 int qxl_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
 131 {
 132         return 0;
 133 }
 134
 135 void qxl_gem_object_close(struct drm_gem_object *obj,
 136                           struct drm_file *file_priv)
 137 {
 138 }
 139
 140 int qxl_gem_init(struct qxl_device *qdev)
 141 {
 142         INIT_LIST_HEAD(&qdev->gem.objects);
 143         return 0;
 144 }
 145
 146 void qxl_gem_fini(struct qxl_device *qdev)
 147 {
 148         qxl_bo_force_delete(qdev);
 149 }