LXR linux/drivers/gpu/drm/qxl/qxl

   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
  31void 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
  39int 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
  69int 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
  98int qxl_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
  99{
 100        return 0;
 101}
 102
 103void qxl_gem_object_close(struct drm_gem_object *obj,
 104                          struct drm_file *file_priv)
 105{
 106}
 107
 108int qxl_gem_init(struct qxl_device *qdev)
 109{
 110        INIT_LIST_HEAD(&qdev->gem.objects);
 111        return 0;
 112}
 113
 114void qxl_gem_fini(struct qxl_device *qdev)
 115{
 116        qxl_bo_force_delete(qdev);
 117}
 118