drm/i915: Fix up broken merge

Maxime didn't really compile-test this :-/

We need to re-apply

commit e4fa8457b2197118538a1400b75c898f9faaf164
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Jun 14 22:35:25 2019 +0200

    drm/prime: Align gem_prime_export with obj_funcs.export

plus make sure i915_gem_dma_buf.c doesn't get zombie-resurrect. It
moved in

commit 10be98a77c558f8cfb823cd2777171fbb35040f6
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Tue May 28 10:29:49 2019 +0100

    drm/i915: Move more GEM objects under gem/

v2: Remember the selftests (Chris).

Fixes: 03b0f2ce735e ("Merge v5.3-rc1 into drm-misc-next")
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190722213759.26612-1-daniel.vetter@ffwll.ch

4 files changed, 6 insertions, 747 deletions

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
index cbf1701d3acc..570b20ad9e58 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c
@@ -204,8 +204,7 @@ static const struct dma_buf_ops i915_dmabuf_ops =  {
 	.end_cpu_access = i915_gem_end_cpu_access,
 };
 
-struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
-				      struct drm_gem_object *gem_obj, int flags)
+struct dma_buf *i915_gem_prime_export(struct drm_gem_object *gem_obj, int flags)
 {
 	struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
 	DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
@@ -222,7 +221,7 @@ struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
 			return ERR_PTR(ret);
 	}
 
-	return drm_gem_dmabuf_export(dev, &exp_info);
+	return drm_gem_dmabuf_export(gem_obj->dev, &exp_info);
 }
 
 static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj)
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
index e3a64edef918..d85d1ce273ca 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
@@ -20,7 +20,7 @@ static int igt_dmabuf_export(void *arg)
 	if (IS_ERR(obj))
 		return PTR_ERR(obj);
 
-	dmabuf = i915_gem_prime_export(&i915->drm, &obj->base, 0);
+	dmabuf = i915_gem_prime_export(&obj->base, 0);
 	i915_gem_object_put(obj);
 	if (IS_ERR(dmabuf)) {
 		pr_err("i915_gem_prime_export failed with err=%d\n",
@@ -44,7 +44,7 @@ static int igt_dmabuf_import_self(void *arg)
 	if (IS_ERR(obj))
 		return PTR_ERR(obj);
 
-	dmabuf = i915_gem_prime_export(&i915->drm, &obj->base, 0);
+	dmabuf = i915_gem_prime_export(&obj->base, 0);
 	if (IS_ERR(dmabuf)) {
 		pr_err("i915_gem_prime_export failed with err=%d\n",
 		       (int)PTR_ERR(dmabuf));
@@ -219,7 +219,7 @@ static int igt_dmabuf_export_vmap(void *arg)
 	if (IS_ERR(obj))
 		return PTR_ERR(obj);
 
-	dmabuf = i915_gem_prime_export(&i915->drm, &obj->base, 0);
+	dmabuf = i915_gem_prime_export(&obj->base, 0);
 	if (IS_ERR(dmabuf)) {
 		pr_err("i915_gem_prime_export failed with err=%d\n",
 		       (int)PTR_ERR(dmabuf));
@@ -266,7 +266,7 @@ static int igt_dmabuf_export_kmap(void *arg)
 	if (IS_ERR(obj))
 		return PTR_ERR(obj);
 
-	dmabuf = i915_gem_prime_export(&i915->drm, &obj->base, 0);
+	dmabuf = i915_gem_prime_export(&obj->base, 0);
 	i915_gem_object_put(obj);
 	if (IS_ERR(dmabuf)) {
 		err = PTR_ERR(dmabuf);
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 54ecab91b3a9..000000000000
--- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
+++ /dev/null
@@ -1,336 +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 <linux/dma-buf.h>
-#include <linux/reservation.h>
-
-
-#include "i915_drv.h"
-
-static struct drm_i915_gem_object *dma_buf_to_obj(struct dma_buf *buf)
-{
-	return to_intel_bo(buf->priv);
-}
-
-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 = dma_buf_to_obj(attachment->dmabuf);
-	struct sg_table *st;
-	struct scatterlist *src, *dst;
-	int ret, i;
-
-	ret = i915_gem_object_pin_pages(obj);
-	if (ret)
-		goto err;
-
-	/* Copy sg so that we make an independent mapping */
-	st = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
-	if (st == NULL) {
-		ret = -ENOMEM;
-		goto err_unpin_pages;
-	}
-
-	ret = sg_alloc_table(st, obj->mm.pages->nents, GFP_KERNEL);
-	if (ret)
-		goto err_free;
-
-	src = obj->mm.pages->sgl;
-	dst = st->sgl;
-	for (i = 0; i < obj->mm.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)) {
-		ret = -ENOMEM;
-		goto err_free_sg;
-	}
-
-	return st;
-
-err_free_sg:
-	sg_free_table(st);
-err_free:
-	kfree(st);
-err_unpin_pages:
-	i915_gem_object_unpin_pages(obj);
-err:
-	return ERR_PTR(ret);
-}
-
-static void i915_gem_unmap_dma_buf(struct dma_buf_attachment *attachment,
-				   struct sg_table *sg,
-				   enum dma_data_direction dir)
-{
-	struct drm_i915_gem_object *obj = dma_buf_to_obj(attachment->dmabuf);
-
-	dma_unmap_sg(attachment->dev, sg->sgl, sg->nents, dir);
-	sg_free_table(sg);
-	kfree(sg);
-
-	i915_gem_object_unpin_pages(obj);
-}
-
-static void *i915_gem_dmabuf_vmap(struct dma_buf *dma_buf)
-{
-	struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
-
-	return i915_gem_object_pin_map(obj, I915_MAP_WB);
-}
-
-static void i915_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr)
-{
-	struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
-
-	i915_gem_object_flush_map(obj);
-	i915_gem_object_unpin_map(obj);
-}
-
-static void *i915_gem_dmabuf_kmap(struct dma_buf *dma_buf, unsigned long page_num)
-{
-	struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
-	struct page *page;
-
-	if (page_num >= obj->base.size >> PAGE_SHIFT)
-		return NULL;
-
-	if (!i915_gem_object_has_struct_page(obj))
-		return NULL;
-
-	if (i915_gem_object_pin_pages(obj))
-		return NULL;
-
-	/* Synchronisation is left to the caller (via .begin_cpu_access()) */
-	page = i915_gem_object_get_page(obj, page_num);
-	if (IS_ERR(page))
-		goto err_unpin;
-
-	return kmap(page);
-
-err_unpin:
-	i915_gem_object_unpin_pages(obj);
-	return NULL;
-}
-
-static void i915_gem_dmabuf_kunmap(struct dma_buf *dma_buf, unsigned long page_num, void *addr)
-{
-	struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
-
-	kunmap(virt_to_page(addr));
-	i915_gem_object_unpin_pages(obj);
-}
-
-static int i915_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma)
-{
-	struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
-	int ret;
-
-	if (obj->base.size < vma->vm_end - vma->vm_start)
-		return -EINVAL;
-
-	if (!obj->base.filp)
-		return -ENODEV;
-
-	ret = call_mmap(obj->base.filp, vma);
-	if (ret)
-		return ret;
-
-	fput(vma->vm_file);
-	vma->vm_file = get_file(obj->base.filp);
-
-	return 0;
-}
-
-static int i915_gem_begin_cpu_access(struct dma_buf *dma_buf, enum dma_data_direction direction)
-{
-	struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
-	struct drm_device *dev = obj->base.dev;
-	bool write = (direction == DMA_BIDIRECTIONAL || direction == DMA_TO_DEVICE);
-	int err;
-
-	err = i915_gem_object_pin_pages(obj);
-	if (err)
-		return err;
-
-	err = i915_mutex_lock_interruptible(dev);
-	if (err)
-		goto out;
-
-	err = i915_gem_object_set_to_cpu_domain(obj, write);
-	mutex_unlock(&dev->struct_mutex);
-
-out:
-	i915_gem_object_unpin_pages(obj);
-	return err;
-}
-
-static int i915_gem_end_cpu_access(struct dma_buf *dma_buf, enum dma_data_direction direction)
-{
-	struct drm_i915_gem_object *obj = dma_buf_to_obj(dma_buf);
-	struct drm_device *dev = obj->base.dev;
-	int err;
-
-	err = i915_gem_object_pin_pages(obj);
-	if (err)
-		return err;
-
-	err = i915_mutex_lock_interruptible(dev);
-	if (err)
-		goto out;
-
-	err = i915_gem_object_set_to_gtt_domain(obj, false);
-	mutex_unlock(&dev->struct_mutex);
-
-out:
-	i915_gem_object_unpin_pages(obj);
-	return err;
-}
-
-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 = drm_gem_dmabuf_release,
-	.map = i915_gem_dmabuf_kmap,
-	.unmap = i915_gem_dmabuf_kunmap,
-	.mmap = i915_gem_dmabuf_mmap,
-	.vmap = i915_gem_dmabuf_vmap,
-	.vunmap = i915_gem_dmabuf_vunmap,
-	.begin_cpu_access = i915_gem_begin_cpu_access,
-	.end_cpu_access = i915_gem_end_cpu_access,
-};
-
-struct dma_buf *i915_gem_prime_export(struct drm_gem_object *gem_obj, int flags)
-{
-	struct drm_i915_gem_object *obj = to_intel_bo(gem_obj);
-	DEFINE_DMA_BUF_EXPORT_INFO(exp_info);
-
-	exp_info.ops = &i915_dmabuf_ops;
-	exp_info.size = gem_obj->size;
-	exp_info.flags = flags;
-	exp_info.priv = gem_obj;
-	exp_info.resv = obj->resv;
-
-	if (obj->ops->dmabuf_export) {
-		int ret = obj->ops->dmabuf_export(obj);
-		if (ret)
-			return ERR_PTR(ret);
-	}
-
-	return drm_gem_dmabuf_export(gem_obj->dev, &exp_info);
-}
-
-static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj)
-{
-	struct sg_table *pages;
-	unsigned int sg_page_sizes;
-
-	pages = dma_buf_map_attachment(obj->base.import_attach,
-				       DMA_BIDIRECTIONAL);
-	if (IS_ERR(pages))
-		return PTR_ERR(pages);
-
-	sg_page_sizes = i915_sg_page_sizes(pages->sgl);
-
-	__i915_gem_object_set_pages(obj, pages, sg_page_sizes);
-
-	return 0;
-}
-
-static void i915_gem_object_put_pages_dmabuf(struct drm_i915_gem_object *obj,
-					     struct sg_table *pages)
-{
-	dma_buf_unmap_attachment(obj->base.import_attach, pages,
-				 DMA_BIDIRECTIONAL);
-}
-
-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_to_obj(dma_buf);
-		/* 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.
-			 */
-			return &i915_gem_object_get(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();
-	if (obj == NULL) {
-		ret = -ENOMEM;
-		goto fail_detach;
-	}
-
-	drm_gem_private_object_init(dev, &obj->base, dma_buf->size);
-	i915_gem_object_init(obj, &i915_gem_object_dmabuf_ops);
-	obj->base.import_attach = attach;
-	obj->resv = dma_buf->resv;
-
-	/* We use GTT as shorthand for a coherent domain, one that is
-	 * neither in the GPU cache nor in the CPU cache, where all
-	 * writes are immediately visible in memory. (That's not strictly
-	 * true, but it's close! There are internal buffers such as the
-	 * write-combined buffer or a delay through the chipset for GTT
-	 * writes that do require us to treat GTT as a separate cache domain.)
-	 */
-	obj->read_domains = I915_GEM_DOMAIN_GTT;
-	obj->write_domain = 0;
-
-	return &obj->base;
-
-fail_detach:
-	dma_buf_detach(dma_buf, attach);
-	dma_buf_put(dma_buf);
-
-	return ERR_PTR(ret);
-}
-
-#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
-#include "selftests/mock_dmabuf.c"
-#include "selftests/i915_gem_dmabuf.c"
-#endif
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/selftests/i915_gem_dmabuf.c
deleted file mode 100644
index 84eb978fe39f..000000000000
--- a/drivers/gpu/drm/i915/selftests/i915_gem_dmabuf.c
+++ /dev/null
@@ -1,404 +0,0 @@
-/*
- * Copyright © 2016 Intel Corporation
- *
- * 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.
- *
- */
-
-#include "../i915_selftest.h"
-
-#include "mock_gem_device.h"
-#include "mock_dmabuf.h"
-
-static int igt_dmabuf_export(void *arg)
-{
-	struct drm_i915_private *i915 = arg;
-	struct drm_i915_gem_object *obj;
-	struct dma_buf *dmabuf;
-
-	obj = i915_gem_object_create(i915, PAGE_SIZE);
-	if (IS_ERR(obj))
-		return PTR_ERR(obj);
-
-	dmabuf = i915_gem_prime_export(&obj->base, 0);
-	i915_gem_object_put(obj);
-	if (IS_ERR(dmabuf)) {
-		pr_err("i915_gem_prime_export failed with err=%d\n",
-		       (int)PTR_ERR(dmabuf));
-		return PTR_ERR(dmabuf);
-	}
-
-	dma_buf_put(dmabuf);
-	return 0;
-}
-
-static int igt_dmabuf_import_self(void *arg)
-{
-	struct drm_i915_private *i915 = arg;
-	struct drm_i915_gem_object *obj;
-	struct drm_gem_object *import;
-	struct dma_buf *dmabuf;
-	int err;
-
-	obj = i915_gem_object_create(i915, PAGE_SIZE);
-	if (IS_ERR(obj))
-		return PTR_ERR(obj);
-
-	dmabuf = i915_gem_prime_export(&obj->base, 0);
-	if (IS_ERR(dmabuf)) {
-		pr_err("i915_gem_prime_export failed with err=%d\n",
-		       (int)PTR_ERR(dmabuf));
-		err = PTR_ERR(dmabuf);
-		goto out;
-	}
-
-	import = i915_gem_prime_import(&i915->drm, dmabuf);
-	if (IS_ERR(import)) {
-		pr_err("i915_gem_prime_import failed with err=%d\n",
-		       (int)PTR_ERR(import));
-		err = PTR_ERR(import);
-		goto out_dmabuf;
-	}
-
-	if (import != &obj->base) {
-		pr_err("i915_gem_prime_import created a new object!\n");
-		err = -EINVAL;
-		goto out_import;
-	}
-
-	err = 0;
-out_import:
-	i915_gem_object_put(to_intel_bo(import));
-out_dmabuf:
-	dma_buf_put(dmabuf);
-out:
-	i915_gem_object_put(obj);
-	return err;
-}
-
-static int igt_dmabuf_import(void *arg)
-{
-	struct drm_i915_private *i915 = arg;
-	struct drm_i915_gem_object *obj;
-	struct dma_buf *dmabuf;
-	void *obj_map, *dma_map;
-	u32 pattern[] = { 0, 0xaa, 0xcc, 0x55, 0xff };
-	int err, i;
-
-	dmabuf = mock_dmabuf(1);
-	if (IS_ERR(dmabuf))
-		return PTR_ERR(dmabuf);
-
-	obj = to_intel_bo(i915_gem_prime_import(&i915->drm, dmabuf));
-	if (IS_ERR(obj)) {
-		pr_err("i915_gem_prime_import failed with err=%d\n",
-		       (int)PTR_ERR(obj));
-		err = PTR_ERR(obj);
-		goto out_dmabuf;
-	}
-
-	if (obj->base.dev != &i915->drm) {
-		pr_err("i915_gem_prime_import created a non-i915 object!\n");
-		err = -EINVAL;
-		goto out_obj;
-	}
-
-	if (obj->base.size != PAGE_SIZE) {
-		pr_err("i915_gem_prime_import is wrong size found %lld, expected %ld\n",
-		       (long long)obj->base.size, PAGE_SIZE);
-		err = -EINVAL;
-		goto out_obj;
-	}
-
-	dma_map = dma_buf_vmap(dmabuf);
-	if (!dma_map) {
-		pr_err("dma_buf_vmap failed\n");
-		err = -ENOMEM;
-		goto out_obj;
-	}
-
-	if (0) { /* Can not yet map dmabuf */
-		obj_map = i915_gem_object_pin_map(obj, I915_MAP_WB);
-		if (IS_ERR(obj_map)) {
-			err = PTR_ERR(obj_map);
-			pr_err("i915_gem_object_pin_map failed with err=%d\n", err);
-			goto out_dma_map;
-		}
-
-		for (i = 0; i < ARRAY_SIZE(pattern); i++) {
-			memset(dma_map, pattern[i], PAGE_SIZE);
-			if (memchr_inv(obj_map, pattern[i], PAGE_SIZE)) {
-				err = -EINVAL;
-				pr_err("imported vmap not all set to %x!\n", pattern[i]);
-				i915_gem_object_unpin_map(obj);
-				goto out_dma_map;
-			}
-		}
-
-		for (i = 0; i < ARRAY_SIZE(pattern); i++) {
-			memset(obj_map, pattern[i], PAGE_SIZE);
-			if (memchr_inv(dma_map, pattern[i], PAGE_SIZE)) {
-				err = -EINVAL;
-				pr_err("exported vmap not all set to %x!\n", pattern[i]);
-				i915_gem_object_unpin_map(obj);
-				goto out_dma_map;
-			}
-		}
-
-		i915_gem_object_unpin_map(obj);
-	}
-
-	err = 0;
-out_dma_map:
-	dma_buf_vunmap(dmabuf, dma_map);
-out_obj:
-	i915_gem_object_put(obj);
-out_dmabuf:
-	dma_buf_put(dmabuf);
-	return err;
-}
-
-static int igt_dmabuf_import_ownership(void *arg)
-{
-	struct drm_i915_private *i915 = arg;
-	struct drm_i915_gem_object *obj;
-	struct dma_buf *dmabuf;
-	void *ptr;
-	int err;
-
-	dmabuf = mock_dmabuf(1);
-	if (IS_ERR(dmabuf))
-		return PTR_ERR(dmabuf);
-
-	ptr = dma_buf_vmap(dmabuf);
-	if (!ptr) {
-		pr_err("dma_buf_vmap failed\n");
-		err = -ENOMEM;
-		goto err_dmabuf;
-	}
-
-	memset(ptr, 0xc5, PAGE_SIZE);
-	dma_buf_vunmap(dmabuf, ptr);
-
-	obj = to_intel_bo(i915_gem_prime_import(&i915->drm, dmabuf));
-	if (IS_ERR(obj)) {
-		pr_err("i915_gem_prime_import failed with err=%d\n",
-		       (int)PTR_ERR(obj));
-		err = PTR_ERR(obj);
-		goto err_dmabuf;
-	}
-
-	dma_buf_put(dmabuf);
-
-	err = i915_gem_object_pin_pages(obj);
-	if (err) {
-		pr_err("i915_gem_object_pin_pages failed with err=%d\n", err);
-		goto out_obj;
-	}
-
-	err = 0;
-	i915_gem_object_unpin_pages(obj);
-out_obj:
-	i915_gem_object_put(obj);
-	return err;
-
-err_dmabuf:
-	dma_buf_put(dmabuf);
-	return err;
-}
-
-static int igt_dmabuf_export_vmap(void *arg)
-{
-	struct drm_i915_private *i915 = arg;
-	struct drm_i915_gem_object *obj;
-	struct dma_buf *dmabuf;
-	void *ptr;
-	int err;
-
-	obj = i915_gem_object_create(i915, PAGE_SIZE);
-	if (IS_ERR(obj))
-		return PTR_ERR(obj);
-
-	dmabuf = i915_gem_prime_export(&obj->base, 0);
-	if (IS_ERR(dmabuf)) {
-		pr_err("i915_gem_prime_export failed with err=%d\n",
-		       (int)PTR_ERR(dmabuf));
-		err = PTR_ERR(dmabuf);
-		goto err_obj;
-	}
-	i915_gem_object_put(obj);
-
-	ptr = dma_buf_vmap(dmabuf);
-	if (!ptr) {
-		pr_err("dma_buf_vmap failed\n");
-		err = -ENOMEM;
-		goto out;
-	}
-
-	if (memchr_inv(ptr, 0, dmabuf->size)) {
-		pr_err("Exported object not initialiased to zero!\n");
-		err = -EINVAL;
-		goto out;
-	}
-
-	memset(ptr, 0xc5, dmabuf->size);
-
-	err = 0;
-	dma_buf_vunmap(dmabuf, ptr);
-out:
-	dma_buf_put(dmabuf);
-	return err;
-
-err_obj:
-	i915_gem_object_put(obj);
-	return err;
-}
-
-static int igt_dmabuf_export_kmap(void *arg)
-{
-	struct drm_i915_private *i915 = arg;
-	struct drm_i915_gem_object *obj;
-	struct dma_buf *dmabuf;
-	void *ptr;
-	int err;
-
-	obj = i915_gem_object_create(i915, 2*PAGE_SIZE);
-	if (IS_ERR(obj))
-		return PTR_ERR(obj);
-
-	dmabuf = i915_gem_prime_export(&obj->base, 0);
-	i915_gem_object_put(obj);
-	if (IS_ERR(dmabuf)) {
-		err = PTR_ERR(dmabuf);
-		pr_err("i915_gem_prime_export failed with err=%d\n", err);
-		return err;
-	}
-
-	ptr = dma_buf_kmap(dmabuf, 0);
-	if (!ptr) {
-		pr_err("dma_buf_kmap failed\n");
-		err = -ENOMEM;
-		goto err;
-	}
-
-	if (memchr_inv(ptr, 0, PAGE_SIZE)) {
-		dma_buf_kunmap(dmabuf, 0, ptr);
-		pr_err("Exported page[0] not initialiased to zero!\n");
-		err = -EINVAL;
-		goto err;
-	}
-
-	memset(ptr, 0xc5, PAGE_SIZE);
-	dma_buf_kunmap(dmabuf, 0, ptr);
-
-	ptr = i915_gem_object_pin_map(obj, I915_MAP_WB);
-	if (IS_ERR(ptr)) {
-		err = PTR_ERR(ptr);
-		pr_err("i915_gem_object_pin_map failed with err=%d\n", err);
-		goto err;
-	}
-	memset(ptr + PAGE_SIZE, 0xaa, PAGE_SIZE);
-	i915_gem_object_flush_map(obj);
-	i915_gem_object_unpin_map(obj);
-
-	ptr = dma_buf_kmap(dmabuf, 1);
-	if (!ptr) {
-		pr_err("dma_buf_kmap failed\n");
-		err = -ENOMEM;
-		goto err;
-	}
-
-	if (memchr_inv(ptr, 0xaa, PAGE_SIZE)) {
-		dma_buf_kunmap(dmabuf, 1, ptr);
-		pr_err("Exported page[1] not set to 0xaa!\n");
-		err = -EINVAL;
-		goto err;
-	}
-
-	memset(ptr, 0xc5, PAGE_SIZE);
-	dma_buf_kunmap(dmabuf, 1, ptr);
-
-	ptr = dma_buf_kmap(dmabuf, 0);
-	if (!ptr) {
-		pr_err("dma_buf_kmap failed\n");
-		err = -ENOMEM;
-		goto err;
-	}
-	if (memchr_inv(ptr, 0xc5, PAGE_SIZE)) {
-		dma_buf_kunmap(dmabuf, 0, ptr);
-		pr_err("Exported page[0] did not retain 0xc5!\n");
-		err = -EINVAL;
-		goto err;
-	}
-	dma_buf_kunmap(dmabuf, 0, ptr);
-
-	ptr = dma_buf_kmap(dmabuf, 2);
-	if (ptr) {
-		pr_err("Erroneously kmapped beyond the end of the object!\n");
-		dma_buf_kunmap(dmabuf, 2, ptr);
-		err = -EINVAL;
-		goto err;
-	}
-
-	ptr = dma_buf_kmap(dmabuf, -1);
-	if (ptr) {
-		pr_err("Erroneously kmapped before the start of the object!\n");
-		dma_buf_kunmap(dmabuf, -1, ptr);
-		err = -EINVAL;
-		goto err;
-	}
-
-	err = 0;
-err:
-	dma_buf_put(dmabuf);
-	return err;
-}
-
-int i915_gem_dmabuf_mock_selftests(void)
-{
-	static const struct i915_subtest tests[] = {
-		SUBTEST(igt_dmabuf_export),
-		SUBTEST(igt_dmabuf_import_self),
-		SUBTEST(igt_dmabuf_import),
-		SUBTEST(igt_dmabuf_import_ownership),
-		SUBTEST(igt_dmabuf_export_vmap),
-		SUBTEST(igt_dmabuf_export_kmap),
-	};
-	struct drm_i915_private *i915;
-	int err;
-
-	i915 = mock_gem_device();
-	if (!i915)
-		return -ENOMEM;
-
-	err = i915_subtests(tests, i915);
-
-	drm_dev_put(&i915->drm);
-	return err;
-}
-
-int i915_gem_dmabuf_live_selftests(struct drm_i915_private *i915)
-{
-	static const struct i915_subtest tests[] = {
-		SUBTEST(igt_dmabuf_export),
-	};
-
-	return i915_subtests(tests, i915);
-}