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 <drm/drmP.h>
  27#include <drm/drm.h>
  28
  29#include "qxl_drv.h"
  30#include "qxl_object.h"
  31
  32void 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_put(tbo);
  44}
  45
  46int 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
  76int 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
 105int qxl_gem_object_open(struct drm_gem_object *obj, struct drm_file *file_priv)
 106{
 107        return 0;
 108}
 109
 110void qxl_gem_object_close(struct drm_gem_object *obj,
 111                          struct drm_file *file_priv)
 112{
 113}
 114
 115void qxl_gem_init(struct qxl_device *qdev)
 116{
 117        INIT_LIST_HEAD(&qdev->gem.objects);
 118}
 119
 120void qxl_gem_fini(struct qxl_device *qdev)
 121{
 122        qxl_bo_force_delete(qdev);
 123}
 124