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Diffstat (limited to 'linux-core/drm_object.c')
-rw-r--r--linux-core/drm_object.c294
1 files changed, 0 insertions, 294 deletions
diff --git a/linux-core/drm_object.c b/linux-core/drm_object.c
deleted file mode 100644
index 2994b716..00000000
--- a/linux-core/drm_object.c
+++ /dev/null
@@ -1,294 +0,0 @@
-/**************************************************************************
- *
- * Copyright (c) 2006-2007 Tungsten Graphics, Inc., Cedar Park, TX., USA
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-/*
- * Authors: Thomas Hellström <thomas-at-tungstengraphics-dot-com>
- */
-
-#include "drmP.h"
-
-int drm_add_user_object(struct drm_file *priv, struct drm_user_object *item,
- int shareable)
-{
- struct drm_device *dev = priv->minor->dev;
- int ret;
-
- DRM_ASSERT_LOCKED(&dev->struct_mutex);
-
- /* The refcount will be bumped to 1 when we add the ref object below. */
- atomic_set(&item->refcount, 0);
- item->shareable = shareable;
- item->owner = priv;
-
- ret = drm_ht_just_insert_please(&dev->object_hash, &item->hash,
- (unsigned long)item, 31, 0, 0);
- if (ret)
- return ret;
-
- ret = drm_add_ref_object(priv, item, _DRM_REF_USE);
- if (ret)
- ret = drm_ht_remove_item(&dev->object_hash, &item->hash);
-
- return ret;
-}
-EXPORT_SYMBOL(drm_add_user_object);
-
-struct drm_user_object *drm_lookup_user_object(struct drm_file *priv, uint32_t key)
-{
- struct drm_device *dev = priv->minor->dev;
- struct drm_hash_item *hash;
- int ret;
- struct drm_user_object *item;
-
- DRM_ASSERT_LOCKED(&dev->struct_mutex);
-
- ret = drm_ht_find_item(&dev->object_hash, key, &hash);
- if (ret)
- return NULL;
-
- item = drm_hash_entry(hash, struct drm_user_object, hash);
-
- if (priv != item->owner) {
- struct drm_open_hash *ht = &priv->refd_object_hash[_DRM_REF_USE];
- ret = drm_ht_find_item(ht, (unsigned long)item, &hash);
- if (ret) {
- DRM_ERROR("Object not registered for usage\n");
- return NULL;
- }
- }
- return item;
-}
-EXPORT_SYMBOL(drm_lookup_user_object);
-
-static void drm_deref_user_object(struct drm_file *priv, struct drm_user_object *item)
-{
- struct drm_device *dev = priv->minor->dev;
- int ret;
-
- if (atomic_dec_and_test(&item->refcount)) {
- ret = drm_ht_remove_item(&dev->object_hash, &item->hash);
- BUG_ON(ret);
- item->remove(priv, item);
- }
-}
-
-static int drm_object_ref_action(struct drm_file *priv, struct drm_user_object *ro,
- enum drm_ref_type action)
-{
- int ret = 0;
-
- switch (action) {
- case _DRM_REF_USE:
- atomic_inc(&ro->refcount);
- break;
- default:
- if (!ro->ref_struct_locked) {
- break;
- } else {
- ro->ref_struct_locked(priv, ro, action);
- }
- }
- return ret;
-}
-
-int drm_add_ref_object(struct drm_file *priv, struct drm_user_object *referenced_object,
- enum drm_ref_type ref_action)
-{
- int ret = 0;
- struct drm_ref_object *item;
- struct drm_open_hash *ht = &priv->refd_object_hash[ref_action];
-
- DRM_ASSERT_LOCKED(&priv->minor->dev->struct_mutex);
- if (!referenced_object->shareable && priv != referenced_object->owner) {
- DRM_ERROR("Not allowed to reference this object\n");
- return -EINVAL;
- }
-
- /*
- * If this is not a usage reference, Check that usage has been registered
- * first. Otherwise strange things may happen on destruction.
- */
-
- if ((ref_action != _DRM_REF_USE) && priv != referenced_object->owner) {
- item =
- drm_lookup_ref_object(priv, referenced_object,
- _DRM_REF_USE);
- if (!item) {
- DRM_ERROR
- ("Object not registered for usage by this client\n");
- return -EINVAL;
- }
- }
-
- if (NULL !=
- (item =
- drm_lookup_ref_object(priv, referenced_object, ref_action))) {
- atomic_inc(&item->refcount);
- return drm_object_ref_action(priv, referenced_object,
- ref_action);
- }
-
- item = drm_ctl_calloc(1, sizeof(*item), DRM_MEM_OBJECTS);
- if (item == NULL) {
- DRM_ERROR("Could not allocate reference object\n");
- return -ENOMEM;
- }
-
- atomic_set(&item->refcount, 1);
- item->hash.key = (unsigned long)referenced_object;
- ret = drm_ht_insert_item(ht, &item->hash);
- item->unref_action = ref_action;
-
- if (ret)
- goto out;
-
- list_add(&item->list, &priv->refd_objects);
- ret = drm_object_ref_action(priv, referenced_object, ref_action);
-out:
- return ret;
-}
-
-struct drm_ref_object *drm_lookup_ref_object(struct drm_file *priv,
- struct drm_user_object *referenced_object,
- enum drm_ref_type ref_action)
-{
- struct drm_hash_item *hash;
- int ret;
-
- DRM_ASSERT_LOCKED(&priv->minor->dev->struct_mutex);
- ret = drm_ht_find_item(&priv->refd_object_hash[ref_action],
- (unsigned long)referenced_object, &hash);
- if (ret)
- return NULL;
-
- return drm_hash_entry(hash, struct drm_ref_object, hash);
-}
-EXPORT_SYMBOL(drm_lookup_ref_object);
-
-static void drm_remove_other_references(struct drm_file *priv,
- struct drm_user_object *ro)
-{
- int i;
- struct drm_open_hash *ht;
- struct drm_hash_item *hash;
- struct drm_ref_object *item;
-
- for (i = _DRM_REF_USE + 1; i < _DRM_NO_REF_TYPES; ++i) {
- ht = &priv->refd_object_hash[i];
- while (!drm_ht_find_item(ht, (unsigned long)ro, &hash)) {
- item = drm_hash_entry(hash, struct drm_ref_object, hash);
- drm_remove_ref_object(priv, item);
- }
- }
-}
-
-void drm_remove_ref_object(struct drm_file *priv, struct drm_ref_object *item)
-{
- int ret;
- struct drm_user_object *user_object = (struct drm_user_object *) item->hash.key;
- struct drm_open_hash *ht = &priv->refd_object_hash[item->unref_action];
- enum drm_ref_type unref_action;
-
- DRM_ASSERT_LOCKED(&priv->minor->dev->struct_mutex);
- unref_action = item->unref_action;
- if (atomic_dec_and_test(&item->refcount)) {
- ret = drm_ht_remove_item(ht, &item->hash);
- BUG_ON(ret);
- list_del_init(&item->list);
- if (unref_action == _DRM_REF_USE)
- drm_remove_other_references(priv, user_object);
- drm_ctl_free(item, sizeof(*item), DRM_MEM_OBJECTS);
- }
-
- switch (unref_action) {
- case _DRM_REF_USE:
- drm_deref_user_object(priv, user_object);
- break;
- default:
- BUG_ON(!user_object->unref);
- user_object->unref(priv, user_object, unref_action);
- break;
- }
-
-}
-EXPORT_SYMBOL(drm_remove_ref_object);
-
-int drm_user_object_ref(struct drm_file *priv, uint32_t user_token,
- enum drm_object_type type, struct drm_user_object **object)
-{
- struct drm_device *dev = priv->minor->dev;
- struct drm_user_object *uo;
- struct drm_hash_item *hash;
- int ret;
-
- mutex_lock(&dev->struct_mutex);
- ret = drm_ht_find_item(&dev->object_hash, user_token, &hash);
- if (ret) {
- DRM_ERROR("Could not find user object to reference.\n");
- goto out_err;
- }
- uo = drm_hash_entry(hash, struct drm_user_object, hash);
- if (uo->type != type) {
- ret = -EINVAL;
- goto out_err;
- }
- ret = drm_add_ref_object(priv, uo, _DRM_REF_USE);
- if (ret)
- goto out_err;
- mutex_unlock(&dev->struct_mutex);
- *object = uo;
- return 0;
-out_err:
- mutex_unlock(&dev->struct_mutex);
- return ret;
-}
-
-int drm_user_object_unref(struct drm_file *priv, uint32_t user_token,
- enum drm_object_type type)
-{
- struct drm_device *dev = priv->minor->dev;
- struct drm_user_object *uo;
- struct drm_ref_object *ro;
- int ret;
-
- mutex_lock(&dev->struct_mutex);
- uo = drm_lookup_user_object(priv, user_token);
- if (!uo || (uo->type != type)) {
- ret = -EINVAL;
- goto out_err;
- }
- ro = drm_lookup_ref_object(priv, uo, _DRM_REF_USE);
- if (!ro) {
- ret = -EINVAL;
- goto out_err;
- }
- drm_remove_ref_object(priv, ro);
- mutex_unlock(&dev->struct_mutex);
- return 0;
-out_err:
- mutex_unlock(&dev->struct_mutex);
- return ret;
-}