1 files changed, 0 insertions, 308 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
deleted file mode 100644
index dc53a527126b..000000000000
--- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
+++ /dev/null
@@ -1,308 +0,0 @@
-/*
- * Copyright 2012 Red Hat Inc
- *
- * 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>
- */
-#include <drm/drmP.h>
-#include "i915_drv.h"
-#include <linux/dma-buf.h>
-
-static struct sg_table *i915_gem_map_dma_buf(struct dma_buf_attachment *attachment,
-					     enum dma_data_direction dir)
-{
-	struct drm_i915_gem_object *obj = attachment->dmabuf->priv;
-	struct sg_table *st;
-	struct scatterlist *src, *dst;
-	int ret, i;
-
-	ret = i915_mutex_lock_interruptible(obj->base.dev);
-	if (ret)
-		return ERR_PTR(ret);
-
-	ret = i915_gem_object_get_pages(obj);
-	if (ret) {
-		st = ERR_PTR(ret);
-		goto out;
-	}
-
-	/* Copy sg so that we make an independent mapping */
-	st = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
-	if (st == NULL) {
-		st = ERR_PTR(-ENOMEM);
-		goto out;
-	}
-
-	ret = sg_alloc_table(st, obj->pages->nents, GFP_KERNEL);
-	if (ret) {
-		kfree(st);
-		st = ERR_PTR(ret);
-		goto out;
-	}
-
-	src = obj->pages->sgl;
-	dst = st->sgl;
-	for (i = 0; i < obj->pages->nents; i++) {
-		sg_set_page(dst, sg_page(src), src->length, 0);
-		dst = sg_next(dst);
-		src = sg_next(src);
-	}
-
-	if (!dma_map_sg(attachment->dev, st->sgl, st->nents, dir)) {
-		sg_free_table(st);
-		kfree(st);
-		st = ERR_PTR(-ENOMEM);
-		goto out;
-	}
-
-	i915_gem_object_pin_pages(obj);
-
-out:
-	mutex_unlock(&obj->base.dev->struct_mutex);
-	return st;
-}
-
-static void i915_gem_unmap_dma_buf(struct dma_buf_attachment *attachment,
-				   struct sg_table *sg,
-				   enum dma_data_direction dir)
-{
-	dma_unmap_sg(attachment->dev, sg->sgl, sg->nents, dir);
-	sg_free_table(sg);
-	kfree(sg);
-}
-
-static void i915_gem_dmabuf_release(struct dma_buf *dma_buf)
-{
-	struct drm_i915_gem_object *obj = dma_buf->priv;
-
-	if (obj->base.export_dma_buf == dma_buf) {
-		/* drop the reference on the export fd holds */
-		obj->base.export_dma_buf = NULL;
-		drm_gem_object_unreference_unlocked(&obj->base);
-	}
-}
-
-static void *i915_gem_dmabuf_vmap(struct dma_buf *dma_buf)
-{
-	struct drm_i915_gem_object *obj = dma_buf->priv;
-	struct drm_device *dev = obj->base.dev;
-	struct sg_page_iter sg_iter;
-	struct page **pages;
-	int ret, i;
-
-	ret = i915_mutex_lock_interruptible(dev);
-	if (ret)
-		return ERR_PTR(ret);
-
-	if (obj->dma_buf_vmapping) {
-		obj->vmapping_count++;
-		goto out_unlock;
-	}
-
-	ret = i915_gem_object_get_pages(obj);
-	if (ret)
-		goto error;
-
-	ret = -ENOMEM;
-
-	pages = drm_malloc_ab(obj->base.size >> PAGE_SHIFT, sizeof(*pages));
-	if (pages == NULL)
-		goto error;
-
-	i = 0;
-	for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0)
-		pages[i++] = sg_page_iter_page(&sg_iter);
-
-	obj->dma_buf_vmapping = vmap(pages, i, 0, PAGE_KERNEL);
-	drm_free_large(pages);
-
-	if (!obj->dma_buf_vmapping)
-		goto error;
-
-	obj->vmapping_count = 1;
-	i915_gem_object_pin_pages(obj);
-out_unlock:
-	mutex_unlock(&dev->struct_mutex);
-	return obj->dma_buf_vmapping;
-
-error:
-	mutex_unlock(&dev->struct_mutex);
-	return ERR_PTR(ret);
-}
-
-static void i915_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
-{
-	struct drm_i915_gem_object *obj = dma_buf->priv;
-	struct drm_device *dev = obj->base.dev;
-	int ret;
-
-	ret = i915_mutex_lock_interruptible(dev);
-	if (ret)
-		return;
-
-	if (--obj->vmapping_count == 0) {
-		vunmap(obj->dma_buf_vmapping);
-		obj->dma_buf_vmapping = NULL;
-
-		i915_gem_object_unpin_pages(obj);
-	}
-	mutex_unlock(&dev->struct_mutex);
-}
-
-static void *i915_gem_dmabuf_kmap_atomic(struct dma_buf *dma_buf, unsigned long page_num)
-{
-	return NULL;
-}
-
-static void i915_gem_dmabuf_kunmap_atomic(struct dma_buf *dma_buf, unsigned long page_num, void *addr)
-{
-
-}
-static void *i915_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num)
-{
-	return NULL;
-}
-
-static void i915_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_num, void *addr)
-{
-
-}
-
-static int i915_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma)
-{
-	return -EINVAL;
-}
-
-static int i915_gem_begin_cpu_access(struct dma_buf *dma_buf, size_t start, size_t length, enum dma_data_direction direction)
-{
-	struct drm_i915_gem_object *obj = dma_buf->priv;
-	struct drm_device *dev = obj->base.dev;
-	int ret;
-	bool write = (direction == DMA_BIDIRECTIONAL || direction == DMA_TO_DEVICE);
-
-	ret = i915_mutex_lock_interruptible(dev);
-	if (ret)
-		return ret;
-
-	ret = i915_gem_object_set_to_cpu_domain(obj, write);
-	mutex_unlock(&dev->struct_mutex);
-	return ret;
-}
-
-static const struct dma_buf_ops i915_dmabuf_ops =  {
-	.map_dma_buf = i915_gem_map_dma_buf,
-	.unmap_dma_buf = i915_gem_unmap_dma_buf,
-	.release = i915_gem_dmabuf_release,
-	.kmap = i915_gem_dmabuf_kmap,
-	.kmap_atomic = i915_gem_dmabuf_kmap_atomic,
-	.kunmap = i915_gem_dmabuf_kunmap,
-	.kunmap_atomic = i915_gem_dmabuf_kunmap_atomic,
-	.mmap = i915_gem_dmabuf_mmap,
-	.vmap = i915_gem_dmabuf_vmap,
-	.vunmap = i915_gem_dmabuf_vunmap,
-	.begin_cpu_access = i915_gem_begin_cpu_access,
-};
-
-struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
-				      struct drm_gem_object *gem_obj, int flags)
-{
-	struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
-
-	return dma_buf_export(obj, &i915_dmabuf_ops, obj->base.size, flags);
-}
-
-static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj)
-{
-	struct sg_table *sg;
-
-	sg = dma_buf_map_attachment(obj->base.import_attach, DMA_BIDIRECTIONAL);
-	if (IS_ERR(sg))
-		return PTR_ERR(sg);
-
-	obj->pages = sg;
-	obj->has_dma_mapping = true;
-	return 0;
-}
-
-static void i915_gem_object_put_pages_dmabuf(struct drm_i915_gem_object *obj)
-{
-	dma_buf_unmap_attachment(obj->base.import_attach,
-				 obj->pages, DMA_BIDIRECTIONAL);
-	obj->has_dma_mapping = false;
-}
-
-static const struct drm_i915_gem_object_ops i915_gem_object_dmabuf_ops = {
-	.get_pages = i915_gem_object_get_pages_dmabuf,
-	.put_pages = i915_gem_object_put_pages_dmabuf,
-};
-
-struct drm_gem_object *i915_gem_prime_import(struct drm_device *dev,
-					     struct dma_buf *dma_buf)
-{
-	struct dma_buf_attachment *attach;
-	struct drm_i915_gem_object *obj;
-	int ret;
-
-	/* is this one of own objects? */
-	if (dma_buf->ops == &i915_dmabuf_ops) {
-		obj = dma_buf->priv;
-		/* is it from our device? */
-		if (obj->base.dev == dev) {
-			/*
-			 * Importing dmabuf exported from out own gem increases
-			 * refcount on gem itself instead of f_count of dmabuf.
-			 */
-			drm_gem_object_reference(&obj->base);
-			return &obj->base;
-		}
-	}
-
-	/* need to attach */
-	attach = dma_buf_attach(dma_buf, dev->dev);
-	if (IS_ERR(attach))
-		return ERR_CAST(attach);
-
-	get_dma_buf(dma_buf);
-
-	obj = i915_gem_object_alloc(dev);
-	if (obj == NULL) {
-		ret = -ENOMEM;
-		goto fail_detach;
-	}
-
-	ret = drm_gem_private_object_init(dev, &obj->base, dma_buf->size);
-	if (ret) {
-		i915_gem_object_free(obj);
-		goto fail_detach;
-	}
-
-	i915_gem_object_init(obj, &i915_gem_object_dmabuf_ops);
-	obj->base.import_attach = attach;
-
-	return &obj->base;
-
-fail_detach:
-	dma_buf_detach(dma_buf, attach);
-	dma_buf_put(dma_buf);
-
-	return ERR_PTR(ret);
-}