1 files changed, 0 insertions, 304 deletions
diff --git a/ANDROID_3.4.5/drivers/gpu/drm/drm_prime.c b/ANDROID_3.4.5/drivers/gpu/drm/drm_prime.c
deleted file mode 100644
index 1bdf2b54..00000000
--- a/ANDROID_3.4.5/drivers/gpu/drm/drm_prime.c
+++ /dev/null
@@ -1,304 +0,0 @@
-/*
- * Copyright © 2012 Red Hat
- *
- * 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, sublicense,
- * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS 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:
- *      Dave Airlie <airlied@redhat.com>
- *      Rob Clark <rob.clark@linaro.org>
- *
- */
-
-#include <linux/export.h>
-#include <linux/dma-buf.h>
-#include "drmP.h"
-
-/*
- * DMA-BUF/GEM Object references and lifetime overview:
- *
- * On the export the dma_buf holds a reference to the exporting GEM
- * object. It takes this reference in handle_to_fd_ioctl, when it
- * first calls .prime_export and stores the exporting GEM object in
- * the dma_buf priv. This reference is released when the dma_buf
- * object goes away in the driver .release function.
- *
- * On the import the importing GEM object holds a reference to the
- * dma_buf (which in turn holds a ref to the exporting GEM object).
- * It takes that reference in the fd_to_handle ioctl.
- * It calls dma_buf_get, creates an attachment to it and stores the
- * attachment in the GEM object. When this attachment is destroyed
- * when the imported object is destroyed, we remove the attachment
- * and drop the reference to the dma_buf.
- *
- * Thus the chain of references always flows in one direction
- * (avoiding loops): importing_gem -> dmabuf -> exporting_gem
- *
- * Self-importing: if userspace is using PRIME as a replacement for flink
- * then it will get a fd->handle request for a GEM object that it created.
- * Drivers should detect this situation and return back the gem object
- * from the dma-buf private.
- */
-
-struct drm_prime_member {
-	struct list_head entry;
-	struct dma_buf *dma_buf;
-	uint32_t handle;
-};
-
-int drm_gem_prime_handle_to_fd(struct drm_device *dev,
-		struct drm_file *file_priv, uint32_t handle, uint32_t flags,
-		int *prime_fd)
-{
-	struct drm_gem_object *obj;
-	void *buf;
-
-	obj = drm_gem_object_lookup(dev, file_priv, handle);
-	if (!obj)
-		return -ENOENT;
-
-	mutex_lock(&file_priv->prime.lock);
-	/* re-export the original imported object */
-	if (obj->import_attach) {
-		get_dma_buf(obj->import_attach->dmabuf);
-		*prime_fd = dma_buf_fd(obj->import_attach->dmabuf, flags);
-		drm_gem_object_unreference_unlocked(obj);
-		mutex_unlock(&file_priv->prime.lock);
-		return 0;
-	}
-
-	if (obj->export_dma_buf) {
-		get_dma_buf(obj->export_dma_buf);
-		*prime_fd = dma_buf_fd(obj->export_dma_buf, flags);
-		drm_gem_object_unreference_unlocked(obj);
-	} else {
-		buf = dev->driver->gem_prime_export(dev, obj, flags);
-		if (IS_ERR(buf)) {
-			/* normally the created dma-buf takes ownership of the ref,
-			 * but if that fails then drop the ref
-			 */
-			drm_gem_object_unreference_unlocked(obj);
-			mutex_unlock(&file_priv->prime.lock);
-			return PTR_ERR(buf);
-		}
-		obj->export_dma_buf = buf;
-		*prime_fd = dma_buf_fd(buf, flags);
-	}
-	mutex_unlock(&file_priv->prime.lock);
-	return 0;
-}
-EXPORT_SYMBOL(drm_gem_prime_handle_to_fd);
-
-int drm_gem_prime_fd_to_handle(struct drm_device *dev,
-		struct drm_file *file_priv, int prime_fd, uint32_t *handle)
-{
-	struct dma_buf *dma_buf;
-	struct drm_gem_object *obj;
-	int ret;
-
-	dma_buf = dma_buf_get(prime_fd);
-	if (IS_ERR(dma_buf))
-		return PTR_ERR(dma_buf);
-
-	mutex_lock(&file_priv->prime.lock);
-
-	ret = drm_prime_lookup_imported_buf_handle(&file_priv->prime,
-			dma_buf, handle);
-	if (!ret) {
-		ret = 0;
-		goto out_put;
-	}
-
-	/* never seen this one, need to import */
-	obj = dev->driver->gem_prime_import(dev, dma_buf);
-	if (IS_ERR(obj)) {
-		ret = PTR_ERR(obj);
-		goto out_put;
-	}
-
-	ret = drm_gem_handle_create(file_priv, obj, handle);
-	drm_gem_object_unreference_unlocked(obj);
-	if (ret)
-		goto out_put;
-
-	ret = drm_prime_add_imported_buf_handle(&file_priv->prime,
-			dma_buf, *handle);
-	if (ret)
-		goto fail;
-
-	mutex_unlock(&file_priv->prime.lock);
-	return 0;
-
-fail:
-	/* hmm, if driver attached, we are relying on the free-object path
-	 * to detach.. which seems ok..
-	 */
-	drm_gem_object_handle_unreference_unlocked(obj);
-out_put:
-	dma_buf_put(dma_buf);
-	mutex_unlock(&file_priv->prime.lock);
-	return ret;
-}
-EXPORT_SYMBOL(drm_gem_prime_fd_to_handle);
-
-int drm_prime_handle_to_fd_ioctl(struct drm_device *dev, void *data,
-				 struct drm_file *file_priv)
-{
-	struct drm_prime_handle *args = data;
-	uint32_t flags;
-
-	if (!drm_core_check_feature(dev, DRIVER_PRIME))
-		return -EINVAL;
-
-	if (!dev->driver->prime_handle_to_fd)
-		return -ENOSYS;
-
-	/* check flags are valid */
-	if (args->flags & ~DRM_CLOEXEC)
-		return -EINVAL;
-
-	/* we only want to pass DRM_CLOEXEC which is == O_CLOEXEC */
-	flags = args->flags & DRM_CLOEXEC;
-
-	return dev->driver->prime_handle_to_fd(dev, file_priv,
-			args->handle, flags, &args->fd);
-}
-
-int drm_prime_fd_to_handle_ioctl(struct drm_device *dev, void *data,
-				 struct drm_file *file_priv)
-{
-	struct drm_prime_handle *args = data;
-
-	if (!drm_core_check_feature(dev, DRIVER_PRIME))
-		return -EINVAL;
-
-	if (!dev->driver->prime_fd_to_handle)
-		return -ENOSYS;
-
-	return dev->driver->prime_fd_to_handle(dev, file_priv,
-			args->fd, &args->handle);
-}
-
-/*
- * drm_prime_pages_to_sg
- *
- * this helper creates an sg table object from a set of pages
- * the driver is responsible for mapping the pages into the
- * importers address space
- */
-struct sg_table *drm_prime_pages_to_sg(struct page **pages, int nr_pages)
-{
-	struct sg_table *sg = NULL;
-	struct scatterlist *iter;
-	int i;
-	int ret;
-
-	sg = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
-	if (!sg)
-		goto out;
-
-	ret = sg_alloc_table(sg, nr_pages, GFP_KERNEL);
-	if (ret)
-		goto out;
-
-	for_each_sg(sg->sgl, iter, nr_pages, i)
-		sg_set_page(iter, pages[i], PAGE_SIZE, 0);
-
-	return sg;
-out:
-	kfree(sg);
-	return NULL;
-}
-EXPORT_SYMBOL(drm_prime_pages_to_sg);
-
-/* helper function to cleanup a GEM/prime object */
-void drm_prime_gem_destroy(struct drm_gem_object *obj, struct sg_table *sg)
-{
-	struct dma_buf_attachment *attach;
-	struct dma_buf *dma_buf;
-	attach = obj->import_attach;
-	if (sg)
-		dma_buf_unmap_attachment(attach, sg, DMA_BIDIRECTIONAL);
-	dma_buf = attach->dmabuf;
-	dma_buf_detach(attach->dmabuf, attach);
-	/* remove the reference */
-	dma_buf_put(dma_buf);
-}
-EXPORT_SYMBOL(drm_prime_gem_destroy);
-
-void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv)
-{
-	INIT_LIST_HEAD(&prime_fpriv->head);
-	mutex_init(&prime_fpriv->lock);
-}
-EXPORT_SYMBOL(drm_prime_init_file_private);
-
-void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv)
-{
-	struct drm_prime_member *member, *safe;
-	list_for_each_entry_safe(member, safe, &prime_fpriv->head, entry) {
-		list_del(&member->entry);
-		kfree(member);
-	}
-}
-EXPORT_SYMBOL(drm_prime_destroy_file_private);
-
-int drm_prime_add_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t handle)
-{
-	struct drm_prime_member *member;
-
-	member = kmalloc(sizeof(*member), GFP_KERNEL);
-	if (!member)
-		return -ENOMEM;
-
-	member->dma_buf = dma_buf;
-	member->handle = handle;
-	list_add(&member->entry, &prime_fpriv->head);
-	return 0;
-}
-EXPORT_SYMBOL(drm_prime_add_imported_buf_handle);
-
-int drm_prime_lookup_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf, uint32_t *handle)
-{
-	struct drm_prime_member *member;
-
-	list_for_each_entry(member, &prime_fpriv->head, entry) {
-		if (member->dma_buf == dma_buf) {
-			*handle = member->handle;
-			return 0;
-		}
-	}
-	return -ENOENT;
-}
-EXPORT_SYMBOL(drm_prime_lookup_imported_buf_handle);
-
-void drm_prime_remove_imported_buf_handle(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf)
-{
-	struct drm_prime_member *member, *safe;
-
-	mutex_lock(&prime_fpriv->lock);
-	list_for_each_entry_safe(member, safe, &prime_fpriv->head, entry) {
-		if (member->dma_buf == dma_buf) {
-			list_del(&member->entry);
-			kfree(member);
-		}
-	}
-	mutex_unlock(&prime_fpriv->lock);
-}
-EXPORT_SYMBOL(drm_prime_remove_imported_buf_handle);