Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

47 files changed, 14177 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/selftests/i915_active.c b/drivers/gpu/drm/i915/selftests/i915_active.c
new file mode 100644
index 0000000000..b61fe850e9
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_active.c
@@ -0,0 +1,352 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include <linux/kref.h>
+#include <linux/string_helpers.h>
+
+#include "gem/i915_gem_pm.h"
+#include "gt/intel_gt.h"
+
+#include "i915_selftest.h"
+
+#include "igt_flush_test.h"
+#include "lib_sw_fence.h"
+
+struct live_active {
+	struct i915_active base;
+	struct kref ref;
+	bool retired;
+};
+
+static void __live_get(struct live_active *active)
+{
+	kref_get(&active->ref);
+}
+
+static void __live_free(struct live_active *active)
+{
+	i915_active_fini(&active->base);
+	kfree(active);
+}
+
+static void __live_release(struct kref *ref)
+{
+	struct live_active *active = container_of(ref, typeof(*active), ref);
+
+	__live_free(active);
+}
+
+static void __live_put(struct live_active *active)
+{
+	kref_put(&active->ref, __live_release);
+}
+
+static int __live_active(struct i915_active *base)
+{
+	struct live_active *active = container_of(base, typeof(*active), base);
+
+	__live_get(active);
+	return 0;
+}
+
+static void __live_retire(struct i915_active *base)
+{
+	struct live_active *active = container_of(base, typeof(*active), base);
+
+	active->retired = true;
+	__live_put(active);
+}
+
+static struct live_active *__live_alloc(struct drm_i915_private *i915)
+{
+	struct live_active *active;
+
+	active = kzalloc(sizeof(*active), GFP_KERNEL);
+	if (!active)
+		return NULL;
+
+	kref_init(&active->ref);
+	i915_active_init(&active->base, __live_active, __live_retire, 0);
+
+	return active;
+}
+
+static struct live_active *
+__live_active_setup(struct drm_i915_private *i915)
+{
+	struct intel_engine_cs *engine;
+	struct i915_sw_fence *submit;
+	struct live_active *active;
+	unsigned int count = 0;
+	int err = 0;
+
+	active = __live_alloc(i915);
+	if (!active)
+		return ERR_PTR(-ENOMEM);
+
+	submit = heap_fence_create(GFP_KERNEL);
+	if (!submit) {
+		kfree(active);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	err = i915_active_acquire(&active->base);
+	if (err)
+		goto out;
+
+	for_each_uabi_engine(engine, i915) {
+		struct i915_request *rq;
+
+		rq = intel_engine_create_kernel_request(engine);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			break;
+		}
+
+		err = i915_sw_fence_await_sw_fence_gfp(&rq->submit,
+						       submit,
+						       GFP_KERNEL);
+		if (err >= 0)
+			err = i915_active_add_request(&active->base, rq);
+		i915_request_add(rq);
+		if (err) {
+			pr_err("Failed to track active ref!\n");
+			break;
+		}
+
+		count++;
+	}
+
+	i915_active_release(&active->base);
+	if (READ_ONCE(active->retired) && count) {
+		pr_err("i915_active retired before submission!\n");
+		err = -EINVAL;
+	}
+	if (atomic_read(&active->base.count) != count) {
+		pr_err("i915_active not tracking all requests, found %d, expected %d\n",
+		       atomic_read(&active->base.count), count);
+		err = -EINVAL;
+	}
+
+out:
+	i915_sw_fence_commit(submit);
+	heap_fence_put(submit);
+	if (err) {
+		__live_put(active);
+		active = ERR_PTR(err);
+	}
+
+	return active;
+}
+
+static int live_active_wait(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct live_active *active;
+	int err = 0;
+
+	/* Check that we get a callback when requests retire upon waiting */
+
+	active = __live_active_setup(i915);
+	if (IS_ERR(active))
+		return PTR_ERR(active);
+
+	__i915_active_wait(&active->base, TASK_UNINTERRUPTIBLE);
+	if (!READ_ONCE(active->retired)) {
+		struct drm_printer p = drm_err_printer(__func__);
+
+		pr_err("i915_active not retired after waiting!\n");
+		i915_active_print(&active->base, &p);
+
+		err = -EINVAL;
+	}
+
+	__live_put(active);
+
+	if (igt_flush_test(i915))
+		err = -EIO;
+
+	return err;
+}
+
+static int live_active_retire(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct live_active *active;
+	int err = 0;
+
+	/* Check that we get a callback when requests are indirectly retired */
+
+	active = __live_active_setup(i915);
+	if (IS_ERR(active))
+		return PTR_ERR(active);
+
+	/* waits for & retires all requests */
+	if (igt_flush_test(i915))
+		err = -EIO;
+
+	if (!READ_ONCE(active->retired)) {
+		struct drm_printer p = drm_err_printer(__func__);
+
+		pr_err("i915_active not retired after flushing!\n");
+		i915_active_print(&active->base, &p);
+
+		err = -EINVAL;
+	}
+
+	__live_put(active);
+
+	return err;
+}
+
+static int live_active_barrier(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_engine_cs *engine;
+	struct live_active *active;
+	int err = 0;
+
+	/* Check that we get a callback when requests retire upon waiting */
+
+	active = __live_alloc(i915);
+	if (!active)
+		return -ENOMEM;
+
+	err = i915_active_acquire(&active->base);
+	if (err)
+		goto out;
+
+	for_each_uabi_engine(engine, i915) {
+		err = i915_active_acquire_preallocate_barrier(&active->base,
+							      engine);
+		if (err)
+			break;
+
+		i915_active_acquire_barrier(&active->base);
+	}
+
+	i915_active_release(&active->base);
+	if (err)
+		goto out;
+
+	__i915_active_wait(&active->base, TASK_UNINTERRUPTIBLE);
+	if (!READ_ONCE(active->retired)) {
+		pr_err("i915_active not retired after flushing barriers!\n");
+		err = -EINVAL;
+	}
+
+out:
+	__live_put(active);
+
+	if (igt_flush_test(i915))
+		err = -EIO;
+
+	return err;
+}
+
+int i915_active_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(live_active_wait),
+		SUBTEST(live_active_retire),
+		SUBTEST(live_active_barrier),
+	};
+
+	if (intel_gt_is_wedged(to_gt(i915)))
+		return 0;
+
+	return i915_subtests(tests, i915);
+}
+
+static struct intel_engine_cs *node_to_barrier(struct active_node *it)
+{
+	struct intel_engine_cs *engine;
+
+	if (!is_barrier(&it->base))
+		return NULL;
+
+	engine = __barrier_to_engine(it);
+	smp_rmb(); /* serialise with add_active_barriers */
+	if (!is_barrier(&it->base))
+		return NULL;
+
+	return engine;
+}
+
+void i915_active_print(struct i915_active *ref, struct drm_printer *m)
+{
+	drm_printf(m, "active %ps:%ps\n", ref->active, ref->retire);
+	drm_printf(m, "\tcount: %d\n", atomic_read(&ref->count));
+	drm_printf(m, "\tpreallocated barriers? %s\n",
+		   str_yes_no(!llist_empty(&ref->preallocated_barriers)));
+
+	if (i915_active_acquire_if_busy(ref)) {
+		struct active_node *it, *n;
+
+		rbtree_postorder_for_each_entry_safe(it, n, &ref->tree, node) {
+			struct intel_engine_cs *engine;
+
+			engine = node_to_barrier(it);
+			if (engine) {
+				drm_printf(m, "\tbarrier: %s\n", engine->name);
+				continue;
+			}
+
+			if (i915_active_fence_isset(&it->base)) {
+				drm_printf(m,
+					   "\ttimeline: %llx\n", it->timeline);
+				continue;
+			}
+		}
+
+		i915_active_release(ref);
+	}
+}
+
+static void spin_unlock_wait(spinlock_t *lock)
+{
+	spin_lock_irq(lock);
+	spin_unlock_irq(lock);
+}
+
+static void active_flush(struct i915_active *ref,
+			 struct i915_active_fence *active)
+{
+	struct dma_fence *fence;
+
+	fence = xchg(__active_fence_slot(active), NULL);
+	if (!fence)
+		return;
+
+	spin_lock_irq(fence->lock);
+	__list_del_entry(&active->cb.node);
+	spin_unlock_irq(fence->lock); /* serialise with fence->cb_list */
+	atomic_dec(&ref->count);
+
+	GEM_BUG_ON(!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &fence->flags));
+}
+
+void i915_active_unlock_wait(struct i915_active *ref)
+{
+	if (i915_active_acquire_if_busy(ref)) {
+		struct active_node *it, *n;
+
+		/* Wait for all active callbacks */
+		rcu_read_lock();
+		active_flush(ref, &ref->excl);
+		rbtree_postorder_for_each_entry_safe(it, n, &ref->tree, node)
+			active_flush(ref, &it->base);
+		rcu_read_unlock();
+
+		i915_active_release(ref);
+	}
+
+	/* And wait for the retire callback */
+	spin_unlock_wait(&ref->tree_lock);
+
+	/* ... which may have been on a thread instead */
+	flush_work(&ref->work);
+}
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem.c b/drivers/gpu/drm/i915/selftests/i915_gem.c
new file mode 100644
index 0000000000..61da4ed9d5
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_gem.c
@@ -0,0 +1,261 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include <linux/random.h>
+
+#include "gem/i915_gem_internal.h"
+#include "gem/i915_gem_pm.h"
+#include "gem/selftests/igt_gem_utils.h"
+#include "gem/selftests/mock_context.h"
+#include "gt/intel_gt.h"
+#include "gt/intel_gt_pm.h"
+
+#include "i915_selftest.h"
+
+#include "igt_flush_test.h"
+#include "mock_drm.h"
+
+static int switch_to_context(struct i915_gem_context *ctx)
+{
+	struct i915_gem_engines_iter it;
+	struct intel_context *ce;
+	int err = 0;
+
+	for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it) {
+		struct i915_request *rq;
+
+		rq = intel_context_create_request(ce);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			break;
+		}
+
+		i915_request_add(rq);
+	}
+	i915_gem_context_unlock_engines(ctx);
+
+	return err;
+}
+
+static void trash_stolen(struct drm_i915_private *i915)
+{
+	struct i915_ggtt *ggtt = to_gt(i915)->ggtt;
+	const u64 slot = ggtt->error_capture.start;
+	const resource_size_t size = resource_size(&i915->dsm.stolen);
+	unsigned long page;
+	u32 prng = 0x12345678;
+
+	/* XXX: fsck. needs some more thought... */
+	if (!i915_ggtt_has_aperture(ggtt))
+		return;
+
+	for (page = 0; page < size; page += PAGE_SIZE) {
+		const dma_addr_t dma = i915->dsm.stolen.start + page;
+		u32 __iomem *s;
+		int x;
+
+		ggtt->vm.insert_page(&ggtt->vm, dma, slot,
+				     i915_gem_get_pat_index(i915,
+							    I915_CACHE_NONE),
+				     0);
+
+		s = io_mapping_map_atomic_wc(&ggtt->iomap, slot);
+		for (x = 0; x < PAGE_SIZE / sizeof(u32); x++) {
+			prng = next_pseudo_random32(prng);
+			iowrite32(prng, &s[x]);
+		}
+		io_mapping_unmap_atomic(s);
+	}
+
+	ggtt->vm.clear_range(&ggtt->vm, slot, PAGE_SIZE);
+}
+
+static void simulate_hibernate(struct drm_i915_private *i915)
+{
+	intel_wakeref_t wakeref;
+
+	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+
+	/*
+	 * As a final sting in the tail, invalidate stolen. Under a real S4,
+	 * stolen is lost and needs to be refilled on resume. However, under
+	 * CI we merely do S4-device testing (as full S4 is too unreliable
+	 * for automated testing across a cluster), so to simulate the effect
+	 * of stolen being trashed across S4, we trash it ourselves.
+	 */
+	trash_stolen(i915);
+
+	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+}
+
+static int igt_pm_prepare(struct drm_i915_private *i915)
+{
+	i915_gem_suspend(i915);
+
+	return 0;
+}
+
+static void igt_pm_suspend(struct drm_i915_private *i915)
+{
+	intel_wakeref_t wakeref;
+
+	with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
+		i915_ggtt_suspend(to_gt(i915)->ggtt);
+		i915_gem_suspend_late(i915);
+	}
+}
+
+static void igt_pm_hibernate(struct drm_i915_private *i915)
+{
+	intel_wakeref_t wakeref;
+
+	with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
+		i915_ggtt_suspend(to_gt(i915)->ggtt);
+
+		i915_gem_freeze(i915);
+		i915_gem_freeze_late(i915);
+	}
+}
+
+static void igt_pm_resume(struct drm_i915_private *i915)
+{
+	intel_wakeref_t wakeref;
+
+	/*
+	 * Both suspend and hibernate follow the same wakeup path and assume
+	 * that runtime-pm just works.
+	 */
+	with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
+		i915_ggtt_resume(to_gt(i915)->ggtt);
+		if (GRAPHICS_VER(i915) >= 8)
+			setup_private_pat(to_gt(i915));
+		i915_gem_resume(i915);
+	}
+}
+
+static int igt_gem_suspend(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct i915_gem_context *ctx;
+	struct file *file;
+	int err;
+
+	file = mock_file(i915);
+	if (IS_ERR(file))
+		return PTR_ERR(file);
+
+	err = -ENOMEM;
+	ctx = live_context(i915, file);
+	if (!IS_ERR(ctx))
+		err = switch_to_context(ctx);
+	if (err)
+		goto out;
+
+	err = igt_pm_prepare(i915);
+	if (err)
+		goto out;
+
+	igt_pm_suspend(i915);
+
+	/* Here be dragons! Note that with S3RST any S3 may become S4! */
+	simulate_hibernate(i915);
+
+	igt_pm_resume(i915);
+
+	err = switch_to_context(ctx);
+out:
+	fput(file);
+	return err;
+}
+
+static int igt_gem_hibernate(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct i915_gem_context *ctx;
+	struct file *file;
+	int err;
+
+	file = mock_file(i915);
+	if (IS_ERR(file))
+		return PTR_ERR(file);
+
+	err = -ENOMEM;
+	ctx = live_context(i915, file);
+	if (!IS_ERR(ctx))
+		err = switch_to_context(ctx);
+	if (err)
+		goto out;
+
+	err = igt_pm_prepare(i915);
+	if (err)
+		goto out;
+
+	igt_pm_hibernate(i915);
+
+	/* Here be dragons! */
+	simulate_hibernate(i915);
+
+	igt_pm_resume(i915);
+
+	err = switch_to_context(ctx);
+out:
+	fput(file);
+	return err;
+}
+
+static int igt_gem_ww_ctx(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct drm_i915_gem_object *obj, *obj2;
+	struct i915_gem_ww_ctx ww;
+	int err = 0;
+
+	obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	obj2 = i915_gem_object_create_internal(i915, PAGE_SIZE);
+	if (IS_ERR(obj2)) {
+		err = PTR_ERR(obj2);
+		goto put1;
+	}
+
+	i915_gem_ww_ctx_init(&ww, true);
+retry:
+	/* Lock the objects, twice for good measure (-EALREADY handling) */
+	err = i915_gem_object_lock(obj, &ww);
+	if (!err)
+		err = i915_gem_object_lock_interruptible(obj, &ww);
+	if (!err)
+		err = i915_gem_object_lock_interruptible(obj2, &ww);
+	if (!err)
+		err = i915_gem_object_lock(obj2, &ww);
+
+	if (err == -EDEADLK) {
+		err = i915_gem_ww_ctx_backoff(&ww);
+		if (!err)
+			goto retry;
+	}
+	i915_gem_ww_ctx_fini(&ww);
+	i915_gem_object_put(obj2);
+put1:
+	i915_gem_object_put(obj);
+	return err;
+}
+
+int i915_gem_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_gem_suspend),
+		SUBTEST(igt_gem_hibernate),
+		SUBTEST(igt_gem_ww_ctx),
+	};
+
+	if (intel_gt_is_wedged(to_gt(i915)))
+		return 0;
+
+	return i915_live_subtests(tests, i915);
+}
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
new file mode 100644
index 0000000000..f8fe3681c3
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
@@ -0,0 +1,571 @@
+/*
+ * 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 "gem/i915_gem_internal.h"
+#include "gem/i915_gem_pm.h"
+#include "gem/selftests/igt_gem_utils.h"
+#include "gem/selftests/mock_context.h"
+#include "gt/intel_gt.h"
+#include "gt/intel_gt_print.h"
+
+#include "i915_selftest.h"
+
+#include "igt_flush_test.h"
+#include "lib_sw_fence.h"
+#include "mock_drm.h"
+#include "mock_gem_device.h"
+
+static void quirk_add(struct drm_i915_gem_object *obj,
+		      struct list_head *objects)
+{
+	/* quirk is only for live tiled objects, use it to declare ownership */
+	GEM_BUG_ON(i915_gem_object_has_tiling_quirk(obj));
+	i915_gem_object_set_tiling_quirk(obj);
+	list_add(&obj->st_link, objects);
+}
+
+static int populate_ggtt(struct i915_ggtt *ggtt, struct list_head *objects)
+{
+	struct drm_i915_gem_object *obj;
+	unsigned long count;
+
+	count = 0;
+	do {
+		struct i915_vma *vma;
+
+		obj = i915_gem_object_create_internal(ggtt->vm.i915,
+						      I915_GTT_PAGE_SIZE);
+		if (IS_ERR(obj))
+			return PTR_ERR(obj);
+
+		vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, 0);
+		if (IS_ERR(vma)) {
+			i915_gem_object_put(obj);
+			if (vma == ERR_PTR(-ENOSPC))
+				break;
+
+			return PTR_ERR(vma);
+		}
+
+		quirk_add(obj, objects);
+		count++;
+	} while (1);
+	pr_debug("Filled GGTT with %lu pages [%llu total]\n",
+		 count, ggtt->vm.total / PAGE_SIZE);
+
+	if (list_empty(&ggtt->vm.bound_list)) {
+		pr_err("No objects on the GGTT inactive list!\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void unpin_ggtt(struct i915_ggtt *ggtt)
+{
+	struct i915_vma *vma;
+
+	list_for_each_entry(vma, &ggtt->vm.bound_list, vm_link)
+		if (i915_gem_object_has_tiling_quirk(vma->obj))
+			i915_vma_unpin(vma);
+}
+
+static void cleanup_objects(struct i915_ggtt *ggtt, struct list_head *list)
+{
+	struct drm_i915_gem_object *obj, *on;
+
+	list_for_each_entry_safe(obj, on, list, st_link) {
+		GEM_BUG_ON(!i915_gem_object_has_tiling_quirk(obj));
+		i915_gem_object_set_tiling_quirk(obj);
+		i915_gem_object_put(obj);
+	}
+
+	i915_gem_drain_freed_objects(ggtt->vm.i915);
+}
+
+static int igt_evict_something(void *arg)
+{
+	struct intel_gt *gt = arg;
+	struct i915_ggtt *ggtt = gt->ggtt;
+	LIST_HEAD(objects);
+	int err;
+
+	/* Fill the GGTT with pinned objects and try to evict one. */
+
+	err = populate_ggtt(ggtt, &objects);
+	if (err)
+		goto cleanup;
+
+	/* Everything is pinned, nothing should happen */
+	mutex_lock(&ggtt->vm.mutex);
+	err = i915_gem_evict_something(&ggtt->vm, NULL,
+				       I915_GTT_PAGE_SIZE, 0, 0,
+				       0, U64_MAX,
+				       0);
+	mutex_unlock(&ggtt->vm.mutex);
+	if (err != -ENOSPC) {
+		pr_err("i915_gem_evict_something failed on a full GGTT with err=%d\n",
+		       err);
+		goto cleanup;
+	}
+
+	unpin_ggtt(ggtt);
+
+	/* Everything is unpinned, we should be able to evict something */
+	mutex_lock(&ggtt->vm.mutex);
+	err = i915_gem_evict_something(&ggtt->vm, NULL,
+				       I915_GTT_PAGE_SIZE, 0, 0,
+				       0, U64_MAX,
+				       0);
+	mutex_unlock(&ggtt->vm.mutex);
+	if (err) {
+		pr_err("i915_gem_evict_something failed on a full GGTT with err=%d\n",
+		       err);
+		goto cleanup;
+	}
+
+cleanup:
+	cleanup_objects(ggtt, &objects);
+	return err;
+}
+
+static int igt_overcommit(void *arg)
+{
+	struct intel_gt *gt = arg;
+	struct i915_ggtt *ggtt = gt->ggtt;
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+	LIST_HEAD(objects);
+	int err;
+
+	/* Fill the GGTT with pinned objects and then try to pin one more.
+	 * We expect it to fail.
+	 */
+
+	err = populate_ggtt(ggtt, &objects);
+	if (err)
+		goto cleanup;
+
+	obj = i915_gem_object_create_internal(gt->i915, I915_GTT_PAGE_SIZE);
+	if (IS_ERR(obj)) {
+		err = PTR_ERR(obj);
+		goto cleanup;
+	}
+
+	quirk_add(obj, &objects);
+
+	vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, 0);
+	if (vma != ERR_PTR(-ENOSPC)) {
+		pr_err("Failed to evict+insert, i915_gem_object_ggtt_pin returned err=%d\n", (int)PTR_ERR_OR_ZERO(vma));
+		err = -EINVAL;
+		goto cleanup;
+	}
+
+cleanup:
+	cleanup_objects(ggtt, &objects);
+	return err;
+}
+
+static int igt_evict_for_vma(void *arg)
+{
+	struct intel_gt *gt = arg;
+	struct i915_ggtt *ggtt = gt->ggtt;
+	struct drm_mm_node target = {
+		.start = 0,
+		.size = 4096,
+	};
+	LIST_HEAD(objects);
+	int err;
+
+	/* Fill the GGTT with pinned objects and try to evict a range. */
+
+	err = populate_ggtt(ggtt, &objects);
+	if (err)
+		goto cleanup;
+
+	/* Everything is pinned, nothing should happen */
+	mutex_lock(&ggtt->vm.mutex);
+	err = i915_gem_evict_for_node(&ggtt->vm, NULL, &target, 0);
+	mutex_unlock(&ggtt->vm.mutex);
+	if (err != -ENOSPC) {
+		pr_err("i915_gem_evict_for_node on a full GGTT returned err=%d\n",
+		       err);
+		goto cleanup;
+	}
+
+	unpin_ggtt(ggtt);
+
+	/* Everything is unpinned, we should be able to evict the node */
+	mutex_lock(&ggtt->vm.mutex);
+	err = i915_gem_evict_for_node(&ggtt->vm, NULL, &target, 0);
+	mutex_unlock(&ggtt->vm.mutex);
+	if (err) {
+		pr_err("i915_gem_evict_for_node returned err=%d\n",
+		       err);
+		goto cleanup;
+	}
+
+cleanup:
+	cleanup_objects(ggtt, &objects);
+	return err;
+}
+
+static void mock_color_adjust(const struct drm_mm_node *node,
+			      unsigned long color,
+			      u64 *start,
+			      u64 *end)
+{
+}
+
+static int igt_evict_for_cache_color(void *arg)
+{
+	struct intel_gt *gt = arg;
+	struct i915_ggtt *ggtt = gt->ggtt;
+	const unsigned long flags = PIN_OFFSET_FIXED;
+	struct drm_mm_node target = {
+		.start = I915_GTT_PAGE_SIZE * 2,
+		.size = I915_GTT_PAGE_SIZE,
+		.color = i915_gem_get_pat_index(gt->i915, I915_CACHE_LLC),
+	};
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+	LIST_HEAD(objects);
+	int err;
+
+	/*
+	 * Currently the use of color_adjust for the GGTT is limited to cache
+	 * coloring and guard pages, and so the presence of mm.color_adjust for
+	 * the GGTT is assumed to be i915_ggtt_color_adjust, hence using a mock
+	 * color adjust will work just fine for our purposes.
+	 */
+	ggtt->vm.mm.color_adjust = mock_color_adjust;
+	GEM_BUG_ON(!i915_vm_has_cache_coloring(&ggtt->vm));
+
+	obj = i915_gem_object_create_internal(gt->i915, I915_GTT_PAGE_SIZE);
+	if (IS_ERR(obj)) {
+		err = PTR_ERR(obj);
+		goto cleanup;
+	}
+	i915_gem_object_set_cache_coherency(obj, I915_CACHE_LLC);
+	quirk_add(obj, &objects);
+
+	vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0,
+				       I915_GTT_PAGE_SIZE | flags);
+	if (IS_ERR(vma)) {
+		pr_err("[0]i915_gem_object_ggtt_pin failed\n");
+		err = PTR_ERR(vma);
+		goto cleanup;
+	}
+
+	obj = i915_gem_object_create_internal(gt->i915, I915_GTT_PAGE_SIZE);
+	if (IS_ERR(obj)) {
+		err = PTR_ERR(obj);
+		goto cleanup;
+	}
+	i915_gem_object_set_cache_coherency(obj, I915_CACHE_LLC);
+	quirk_add(obj, &objects);
+
+	/* Neighbouring; same colour - should fit */
+	vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0,
+				       (I915_GTT_PAGE_SIZE * 2) | flags);
+	if (IS_ERR(vma)) {
+		pr_err("[1]i915_gem_object_ggtt_pin failed\n");
+		err = PTR_ERR(vma);
+		goto cleanup;
+	}
+
+	i915_vma_unpin(vma);
+
+	/* Remove just the second vma */
+	mutex_lock(&ggtt->vm.mutex);
+	err = i915_gem_evict_for_node(&ggtt->vm, NULL, &target, 0);
+	mutex_unlock(&ggtt->vm.mutex);
+	if (err) {
+		pr_err("[0]i915_gem_evict_for_node returned err=%d\n", err);
+		goto cleanup;
+	}
+
+	/* Attempt to remove the first *pinned* vma, by removing the (empty)
+	 * neighbour -- this should fail.
+	 */
+	target.color = i915_gem_get_pat_index(gt->i915, I915_CACHE_L3_LLC);
+
+	mutex_lock(&ggtt->vm.mutex);
+	err = i915_gem_evict_for_node(&ggtt->vm, NULL, &target, 0);
+	mutex_unlock(&ggtt->vm.mutex);
+	if (!err) {
+		pr_err("[1]i915_gem_evict_for_node returned err=%d\n", err);
+		err = -EINVAL;
+		goto cleanup;
+	}
+
+	err = 0;
+
+cleanup:
+	unpin_ggtt(ggtt);
+	cleanup_objects(ggtt, &objects);
+	ggtt->vm.mm.color_adjust = NULL;
+	return err;
+}
+
+static int igt_evict_vm(void *arg)
+{
+	struct intel_gt *gt = arg;
+	struct i915_ggtt *ggtt = gt->ggtt;
+	struct i915_gem_ww_ctx ww;
+	LIST_HEAD(objects);
+	int err;
+
+	/* Fill the GGTT with pinned objects and try to evict everything. */
+
+	err = populate_ggtt(ggtt, &objects);
+	if (err)
+		goto cleanup;
+
+	/* Everything is pinned, nothing should happen */
+	mutex_lock(&ggtt->vm.mutex);
+	err = i915_gem_evict_vm(&ggtt->vm, NULL, NULL);
+	mutex_unlock(&ggtt->vm.mutex);
+	if (err) {
+		pr_err("i915_gem_evict_vm on a full GGTT returned err=%d]\n",
+		       err);
+		goto cleanup;
+	}
+
+	unpin_ggtt(ggtt);
+
+	for_i915_gem_ww(&ww, err, false) {
+		mutex_lock(&ggtt->vm.mutex);
+		err = i915_gem_evict_vm(&ggtt->vm, &ww, NULL);
+		mutex_unlock(&ggtt->vm.mutex);
+	}
+
+	if (err) {
+		pr_err("i915_gem_evict_vm on a full GGTT returned err=%d]\n",
+		       err);
+		goto cleanup;
+	}
+
+cleanup:
+	cleanup_objects(ggtt, &objects);
+	return err;
+}
+
+static int igt_evict_contexts(void *arg)
+{
+	const u64 PRETEND_GGTT_SIZE = 16ull << 20;
+	struct intel_gt *gt = arg;
+	struct i915_ggtt *ggtt = gt->ggtt;
+	struct drm_i915_private *i915 = gt->i915;
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+	struct reserved {
+		struct drm_mm_node node;
+		struct reserved *next;
+	} *reserved = NULL;
+	intel_wakeref_t wakeref;
+	struct drm_mm_node hole;
+	unsigned long count;
+	int err;
+
+	/*
+	 * The purpose of this test is to verify that we will trigger an
+	 * eviction in the GGTT when constructing a request that requires
+	 * additional space in the GGTT for pinning the context. This space
+	 * is not directly tied to the request so reclaiming it requires
+	 * extra work.
+	 *
+	 * As such this test is only meaningful for full-ppgtt environments
+	 * where the GTT space of the request is separate from the GGTT
+	 * allocation required to build the request.
+	 */
+	if (!HAS_FULL_PPGTT(i915))
+		return 0;
+
+	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+
+	/* Reserve a block so that we know we have enough to fit a few rq */
+	memset(&hole, 0, sizeof(hole));
+	mutex_lock(&ggtt->vm.mutex);
+	err = i915_gem_gtt_insert(&ggtt->vm, NULL, &hole,
+				  PRETEND_GGTT_SIZE, 0, I915_COLOR_UNEVICTABLE,
+				  0, ggtt->vm.total,
+				  PIN_NOEVICT);
+	if (err)
+		goto out_locked;
+
+	/* Make the GGTT appear small by filling it with unevictable nodes */
+	count = 0;
+	do {
+		struct reserved *r;
+
+		mutex_unlock(&ggtt->vm.mutex);
+		r = kcalloc(1, sizeof(*r), GFP_KERNEL);
+		mutex_lock(&ggtt->vm.mutex);
+		if (!r) {
+			err = -ENOMEM;
+			goto out_locked;
+		}
+
+		if (i915_gem_gtt_insert(&ggtt->vm, NULL, &r->node,
+					1ul << 20, 0, I915_COLOR_UNEVICTABLE,
+					0, ggtt->vm.total,
+					PIN_NOEVICT)) {
+			kfree(r);
+			break;
+		}
+
+		r->next = reserved;
+		reserved = r;
+
+		count++;
+	} while (1);
+	drm_mm_remove_node(&hole);
+	mutex_unlock(&ggtt->vm.mutex);
+	pr_info("Filled GGTT with %lu 1MiB nodes\n", count);
+
+	/* Overfill the GGTT with context objects and so try to evict one. */
+	for_each_engine(engine, gt, id) {
+		struct i915_sw_fence fence;
+		struct i915_request *last = NULL;
+
+		count = 0;
+		onstack_fence_init(&fence);
+		do {
+			struct intel_context *ce;
+			struct i915_request *rq;
+
+			ce = intel_context_create(engine);
+			if (IS_ERR(ce))
+				break;
+
+			/* We will need some GGTT space for the rq's context */
+			igt_evict_ctl.fail_if_busy = true;
+			rq = intel_context_create_request(ce);
+			igt_evict_ctl.fail_if_busy = false;
+			intel_context_put(ce);
+
+			if (IS_ERR(rq)) {
+				/* When full, fail_if_busy will trigger EBUSY */
+				if (PTR_ERR(rq) != -EBUSY) {
+					pr_err("Unexpected error from request alloc (on %s): %d\n",
+					       engine->name,
+					       (int)PTR_ERR(rq));
+					err = PTR_ERR(rq);
+				}
+				break;
+			}
+
+			/* Keep every request/ctx pinned until we are full */
+			err = i915_sw_fence_await_sw_fence_gfp(&rq->submit,
+							       &fence,
+							       GFP_KERNEL);
+			if (err < 0)
+				break;
+
+			i915_request_add(rq);
+			count++;
+			if (last)
+				i915_request_put(last);
+			last = i915_request_get(rq);
+			err = 0;
+		} while(1);
+		onstack_fence_fini(&fence);
+		pr_info("Submitted %lu contexts/requests on %s\n",
+			count, engine->name);
+		if (err)
+			break;
+		if (last) {
+			if (i915_request_wait(last, 0, HZ) < 0) {
+				err = -EIO;
+				i915_request_put(last);
+				pr_err("Failed waiting for last request (on %s)",
+				       engine->name);
+				break;
+			}
+			i915_request_put(last);
+		}
+		err = intel_gt_wait_for_idle(engine->gt, HZ * 3);
+		if (err) {
+			gt_err(engine->gt, "Failed to idle GT (on %s)",
+			       engine->name);
+			break;
+		}
+	}
+
+	mutex_lock(&ggtt->vm.mutex);
+out_locked:
+	if (igt_flush_test(i915))
+		err = -EIO;
+	while (reserved) {
+		struct reserved *next = reserved->next;
+
+		drm_mm_remove_node(&reserved->node);
+		kfree(reserved);
+
+		reserved = next;
+	}
+	if (drm_mm_node_allocated(&hole))
+		drm_mm_remove_node(&hole);
+	mutex_unlock(&ggtt->vm.mutex);
+	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+
+	return err;
+}
+
+int i915_gem_evict_mock_selftests(void)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_evict_something),
+		SUBTEST(igt_evict_for_vma),
+		SUBTEST(igt_evict_for_cache_color),
+		SUBTEST(igt_evict_vm),
+		SUBTEST(igt_overcommit),
+	};
+	struct drm_i915_private *i915;
+	intel_wakeref_t wakeref;
+	int err = 0;
+
+	i915 = mock_gem_device();
+	if (!i915)
+		return -ENOMEM;
+
+	with_intel_runtime_pm(&i915->runtime_pm, wakeref)
+		err = i915_subtests(tests, to_gt(i915));
+
+	mock_destroy_device(i915);
+	return err;
+}
+
+int i915_gem_evict_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_evict_contexts),
+	};
+
+	if (intel_gt_is_wedged(to_gt(i915)))
+		return 0;
+
+	return intel_gt_live_subtests(tests, to_gt(i915));
+}
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
new file mode 100644
index 0000000000..5c397a2df7
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -0,0 +1,1974 @@
+/*
+ * 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 <linux/list_sort.h>
+#include <linux/prime_numbers.h>
+
+#include "gem/i915_gem_context.h"
+#include "gem/i915_gem_internal.h"
+#include "gem/i915_gem_lmem.h"
+#include "gem/i915_gem_region.h"
+#include "gem/selftests/mock_context.h"
+#include "gt/intel_context.h"
+#include "gt/intel_gpu_commands.h"
+#include "gt/intel_gtt.h"
+
+#include "i915_random.h"
+#include "i915_selftest.h"
+#include "i915_vma_resource.h"
+
+#include "mock_drm.h"
+#include "mock_gem_device.h"
+#include "mock_gtt.h"
+#include "igt_flush_test.h"
+
+static void cleanup_freed_objects(struct drm_i915_private *i915)
+{
+	i915_gem_drain_freed_objects(i915);
+}
+
+static void fake_free_pages(struct drm_i915_gem_object *obj,
+			    struct sg_table *pages)
+{
+	sg_free_table(pages);
+	kfree(pages);
+}
+
+static int fake_get_pages(struct drm_i915_gem_object *obj)
+{
+#define GFP (GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY)
+#define PFN_BIAS 0x1000
+	struct sg_table *pages;
+	struct scatterlist *sg;
+	typeof(obj->base.size) rem;
+
+	pages = kmalloc(sizeof(*pages), GFP);
+	if (!pages)
+		return -ENOMEM;
+
+	rem = round_up(obj->base.size, BIT(31)) >> 31;
+	/* restricted by sg_alloc_table */
+	if (overflows_type(rem, unsigned int)) {
+		kfree(pages);
+		return -E2BIG;
+	}
+
+	if (sg_alloc_table(pages, rem, GFP)) {
+		kfree(pages);
+		return -ENOMEM;
+	}
+
+	rem = obj->base.size;
+	for (sg = pages->sgl; sg; sg = sg_next(sg)) {
+		unsigned long len = min_t(typeof(rem), rem, BIT(31));
+
+		GEM_BUG_ON(!len);
+		sg_set_page(sg, pfn_to_page(PFN_BIAS), len, 0);
+		sg_dma_address(sg) = page_to_phys(sg_page(sg));
+		sg_dma_len(sg) = len;
+
+		rem -= len;
+	}
+	GEM_BUG_ON(rem);
+
+	__i915_gem_object_set_pages(obj, pages);
+
+	return 0;
+#undef GFP
+}
+
+static void fake_put_pages(struct drm_i915_gem_object *obj,
+			   struct sg_table *pages)
+{
+	fake_free_pages(obj, pages);
+	obj->mm.dirty = false;
+}
+
+static const struct drm_i915_gem_object_ops fake_ops = {
+	.name = "fake-gem",
+	.flags = I915_GEM_OBJECT_IS_SHRINKABLE,
+	.get_pages = fake_get_pages,
+	.put_pages = fake_put_pages,
+};
+
+static struct drm_i915_gem_object *
+fake_dma_object(struct drm_i915_private *i915, u64 size)
+{
+	static struct lock_class_key lock_class;
+	struct drm_i915_gem_object *obj;
+
+	GEM_BUG_ON(!size);
+	GEM_BUG_ON(!IS_ALIGNED(size, I915_GTT_PAGE_SIZE));
+
+	if (overflows_type(size, obj->base.size))
+		return ERR_PTR(-E2BIG);
+
+	obj = i915_gem_object_alloc();
+	if (!obj)
+		goto err;
+
+	drm_gem_private_object_init(&i915->drm, &obj->base, size);
+	i915_gem_object_init(obj, &fake_ops, &lock_class, 0);
+
+	i915_gem_object_set_volatile(obj);
+
+	obj->write_domain = I915_GEM_DOMAIN_CPU;
+	obj->read_domains = I915_GEM_DOMAIN_CPU;
+	obj->pat_index = i915_gem_get_pat_index(i915, I915_CACHE_NONE);
+
+	/* Preallocate the "backing storage" */
+	if (i915_gem_object_pin_pages_unlocked(obj))
+		goto err_obj;
+
+	i915_gem_object_unpin_pages(obj);
+	return obj;
+
+err_obj:
+	i915_gem_object_put(obj);
+err:
+	return ERR_PTR(-ENOMEM);
+}
+
+static int igt_ppgtt_alloc(void *arg)
+{
+	struct drm_i915_private *dev_priv = arg;
+	struct i915_ppgtt *ppgtt;
+	struct i915_gem_ww_ctx ww;
+	u64 size, last, limit;
+	int err = 0;
+
+	/* Allocate a ppggt and try to fill the entire range */
+
+	if (!HAS_PPGTT(dev_priv))
+		return 0;
+
+	ppgtt = i915_ppgtt_create(to_gt(dev_priv), 0);
+	if (IS_ERR(ppgtt))
+		return PTR_ERR(ppgtt);
+
+	if (!ppgtt->vm.allocate_va_range)
+		goto err_ppgtt_cleanup;
+
+	/*
+	 * While we only allocate the page tables here and so we could
+	 * address a much larger GTT than we could actually fit into
+	 * RAM, a practical limit is the amount of physical pages in the system.
+	 * This should ensure that we do not run into the oomkiller during
+	 * the test and take down the machine wilfully.
+	 */
+	limit = totalram_pages() << PAGE_SHIFT;
+	limit = min(ppgtt->vm.total, limit);
+
+	i915_gem_ww_ctx_init(&ww, false);
+retry:
+	err = i915_vm_lock_objects(&ppgtt->vm, &ww);
+	if (err)
+		goto err_ppgtt_cleanup;
+
+	/* Check we can allocate the entire range */
+	for (size = 4096; size <= limit; size <<= 2) {
+		struct i915_vm_pt_stash stash = {};
+
+		err = i915_vm_alloc_pt_stash(&ppgtt->vm, &stash, size);
+		if (err)
+			goto err_ppgtt_cleanup;
+
+		err = i915_vm_map_pt_stash(&ppgtt->vm, &stash);
+		if (err) {
+			i915_vm_free_pt_stash(&ppgtt->vm, &stash);
+			goto err_ppgtt_cleanup;
+		}
+
+		ppgtt->vm.allocate_va_range(&ppgtt->vm, &stash, 0, size);
+		cond_resched();
+
+		ppgtt->vm.clear_range(&ppgtt->vm, 0, size);
+
+		i915_vm_free_pt_stash(&ppgtt->vm, &stash);
+	}
+
+	/* Check we can incrementally allocate the entire range */
+	for (last = 0, size = 4096; size <= limit; last = size, size <<= 2) {
+		struct i915_vm_pt_stash stash = {};
+
+		err = i915_vm_alloc_pt_stash(&ppgtt->vm, &stash, size - last);
+		if (err)
+			goto err_ppgtt_cleanup;
+
+		err = i915_vm_map_pt_stash(&ppgtt->vm, &stash);
+		if (err) {
+			i915_vm_free_pt_stash(&ppgtt->vm, &stash);
+			goto err_ppgtt_cleanup;
+		}
+
+		ppgtt->vm.allocate_va_range(&ppgtt->vm, &stash,
+					    last, size - last);
+		cond_resched();
+
+		i915_vm_free_pt_stash(&ppgtt->vm, &stash);
+	}
+
+err_ppgtt_cleanup:
+	if (err == -EDEADLK) {
+		err = i915_gem_ww_ctx_backoff(&ww);
+		if (!err)
+			goto retry;
+	}
+	i915_gem_ww_ctx_fini(&ww);
+
+	i915_vm_put(&ppgtt->vm);
+	return err;
+}
+
+static int lowlevel_hole(struct i915_address_space *vm,
+			 u64 hole_start, u64 hole_end,
+			 unsigned long end_time)
+{
+	const unsigned int min_alignment =
+		i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM);
+	I915_RND_STATE(seed_prng);
+	struct i915_vma_resource *mock_vma_res;
+	unsigned int size;
+
+	mock_vma_res = kzalloc(sizeof(*mock_vma_res), GFP_KERNEL);
+	if (!mock_vma_res)
+		return -ENOMEM;
+
+	/* Keep creating larger objects until one cannot fit into the hole */
+	for (size = 12; (hole_end - hole_start) >> size; size++) {
+		I915_RND_SUBSTATE(prng, seed_prng);
+		struct drm_i915_gem_object *obj;
+		unsigned int *order, count, n;
+		u64 hole_size, aligned_size;
+
+		aligned_size = max_t(u32, ilog2(min_alignment), size);
+		hole_size = (hole_end - hole_start) >> aligned_size;
+		if (hole_size > KMALLOC_MAX_SIZE / sizeof(u32))
+			hole_size = KMALLOC_MAX_SIZE / sizeof(u32);
+		count = hole_size >> 1;
+		if (!count) {
+			pr_debug("%s: hole is too small [%llx - %llx] >> %d: %lld\n",
+				 __func__, hole_start, hole_end, size, hole_size);
+			break;
+		}
+
+		do {
+			order = i915_random_order(count, &prng);
+			if (order)
+				break;
+		} while (count >>= 1);
+		if (!count) {
+			kfree(mock_vma_res);
+			return -ENOMEM;
+		}
+		GEM_BUG_ON(!order);
+
+		GEM_BUG_ON(count * BIT_ULL(aligned_size) > vm->total);
+		GEM_BUG_ON(hole_start + count * BIT_ULL(aligned_size) > hole_end);
+
+		/* Ignore allocation failures (i.e. don't report them as
+		 * a test failure) as we are purposefully allocating very
+		 * large objects without checking that we have sufficient
+		 * memory. We expect to hit -ENOMEM.
+		 */
+
+		obj = fake_dma_object(vm->i915, BIT_ULL(size));
+		if (IS_ERR(obj)) {
+			kfree(order);
+			break;
+		}
+
+		GEM_BUG_ON(obj->base.size != BIT_ULL(size));
+
+		if (i915_gem_object_pin_pages_unlocked(obj)) {
+			i915_gem_object_put(obj);
+			kfree(order);
+			break;
+		}
+
+		for (n = 0; n < count; n++) {
+			u64 addr = hole_start + order[n] * BIT_ULL(aligned_size);
+			intel_wakeref_t wakeref;
+
+			GEM_BUG_ON(addr + BIT_ULL(aligned_size) > vm->total);
+
+			if (igt_timeout(end_time,
+					"%s timed out before %d/%d\n",
+					__func__, n, count)) {
+				hole_end = hole_start; /* quit */
+				break;
+			}
+
+			if (vm->allocate_va_range) {
+				struct i915_vm_pt_stash stash = {};
+				struct i915_gem_ww_ctx ww;
+				int err;
+
+				i915_gem_ww_ctx_init(&ww, false);
+retry:
+				err = i915_vm_lock_objects(vm, &ww);
+				if (err)
+					goto alloc_vm_end;
+
+				err = -ENOMEM;
+				if (i915_vm_alloc_pt_stash(vm, &stash,
+							   BIT_ULL(size)))
+					goto alloc_vm_end;
+
+				err = i915_vm_map_pt_stash(vm, &stash);
+				if (!err)
+					vm->allocate_va_range(vm, &stash,
+							      addr, BIT_ULL(size));
+				i915_vm_free_pt_stash(vm, &stash);
+alloc_vm_end:
+				if (err == -EDEADLK) {
+					err = i915_gem_ww_ctx_backoff(&ww);
+					if (!err)
+						goto retry;
+				}
+				i915_gem_ww_ctx_fini(&ww);
+
+				if (err)
+					break;
+			}
+
+			mock_vma_res->bi.pages = obj->mm.pages;
+			mock_vma_res->node_size = BIT_ULL(aligned_size);
+			mock_vma_res->start = addr;
+
+			with_intel_runtime_pm(vm->gt->uncore->rpm, wakeref)
+			  vm->insert_entries(vm, mock_vma_res,
+					     i915_gem_get_pat_index(vm->i915,
+								    I915_CACHE_NONE),
+					     0);
+		}
+		count = n;
+
+		i915_random_reorder(order, count, &prng);
+		for (n = 0; n < count; n++) {
+			u64 addr = hole_start + order[n] * BIT_ULL(aligned_size);
+			intel_wakeref_t wakeref;
+
+			GEM_BUG_ON(addr + BIT_ULL(size) > vm->total);
+			with_intel_runtime_pm(vm->gt->uncore->rpm, wakeref)
+				vm->clear_range(vm, addr, BIT_ULL(size));
+		}
+
+		i915_gem_object_unpin_pages(obj);
+		i915_gem_object_put(obj);
+
+		kfree(order);
+
+		cleanup_freed_objects(vm->i915);
+	}
+
+	kfree(mock_vma_res);
+	return 0;
+}
+
+static void close_object_list(struct list_head *objects,
+			      struct i915_address_space *vm)
+{
+	struct drm_i915_gem_object *obj, *on;
+	int __maybe_unused ignored;
+
+	list_for_each_entry_safe(obj, on, objects, st_link) {
+		struct i915_vma *vma;
+
+		vma = i915_vma_instance(obj, vm, NULL);
+		if (!IS_ERR(vma))
+			ignored = i915_vma_unbind_unlocked(vma);
+
+		list_del(&obj->st_link);
+		i915_gem_object_put(obj);
+	}
+}
+
+static int fill_hole(struct i915_address_space *vm,
+		     u64 hole_start, u64 hole_end,
+		     unsigned long end_time)
+{
+	const u64 hole_size = hole_end - hole_start;
+	struct drm_i915_gem_object *obj;
+	const unsigned int min_alignment =
+		i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM);
+	const unsigned long max_pages =
+		min_t(u64, ULONG_MAX - 1, (hole_size / 2) >> ilog2(min_alignment));
+	const unsigned long max_step = max(int_sqrt(max_pages), 2UL);
+	unsigned long npages, prime, flags;
+	struct i915_vma *vma;
+	LIST_HEAD(objects);
+	int err;
+
+	/* Try binding many VMA working inwards from either edge */
+
+	flags = PIN_OFFSET_FIXED | PIN_USER;
+	if (i915_is_ggtt(vm))
+		flags |= PIN_GLOBAL;
+
+	for_each_prime_number_from(prime, 2, max_step) {
+		for (npages = 1; npages <= max_pages; npages *= prime) {
+			const u64 full_size = npages << PAGE_SHIFT;
+			const struct {
+				const char *name;
+				u64 offset;
+				int step;
+			} phases[] = {
+				{ "top-down", hole_end, -1, },
+				{ "bottom-up", hole_start, 1, },
+				{ }
+			}, *p;
+
+			obj = fake_dma_object(vm->i915, full_size);
+			if (IS_ERR(obj))
+				break;
+
+			list_add(&obj->st_link, &objects);
+
+			/* Align differing sized objects against the edges, and
+			 * check we don't walk off into the void when binding
+			 * them into the GTT.
+			 */
+			for (p = phases; p->name; p++) {
+				u64 offset;
+
+				offset = p->offset;
+				list_for_each_entry(obj, &objects, st_link) {
+					u64 aligned_size = round_up(obj->base.size,
+								    min_alignment);
+
+					vma = i915_vma_instance(obj, vm, NULL);
+					if (IS_ERR(vma))
+						continue;
+
+					if (p->step < 0) {
+						if (offset < hole_start + aligned_size)
+							break;
+						offset -= aligned_size;
+					}
+
+					err = i915_vma_pin(vma, 0, 0, offset | flags);
+					if (err) {
+						pr_err("%s(%s) pin (forward) failed with err=%d on size=%lu pages (prime=%lu), offset=%llx\n",
+						       __func__, p->name, err, npages, prime, offset);
+						goto err;
+					}
+
+					if (!drm_mm_node_allocated(&vma->node) ||
+					    i915_vma_misplaced(vma, 0, 0, offset | flags)) {
+						pr_err("%s(%s) (forward) insert failed: vma.node=%llx + %llx [allocated? %d], expected offset %llx\n",
+						       __func__, p->name, vma->node.start, vma->node.size, drm_mm_node_allocated(&vma->node),
+						       offset);
+						err = -EINVAL;
+						goto err;
+					}
+
+					i915_vma_unpin(vma);
+
+					if (p->step > 0) {
+						if (offset + aligned_size > hole_end)
+							break;
+						offset += aligned_size;
+					}
+				}
+
+				offset = p->offset;
+				list_for_each_entry(obj, &objects, st_link) {
+					u64 aligned_size = round_up(obj->base.size,
+								    min_alignment);
+
+					vma = i915_vma_instance(obj, vm, NULL);
+					if (IS_ERR(vma))
+						continue;
+
+					if (p->step < 0) {
+						if (offset < hole_start + aligned_size)
+							break;
+						offset -= aligned_size;
+					}
+
+					if (!drm_mm_node_allocated(&vma->node) ||
+					    i915_vma_misplaced(vma, 0, 0, offset | flags)) {
+						pr_err("%s(%s) (forward) moved vma.node=%llx + %llx, expected offset %llx\n",
+						       __func__, p->name, vma->node.start, vma->node.size,
+						       offset);
+						err = -EINVAL;
+						goto err;
+					}
+
+					err = i915_vma_unbind_unlocked(vma);
+					if (err) {
+						pr_err("%s(%s) (forward) unbind of vma.node=%llx + %llx failed with err=%d\n",
+						       __func__, p->name, vma->node.start, vma->node.size,
+						       err);
+						goto err;
+					}
+
+					if (p->step > 0) {
+						if (offset + aligned_size > hole_end)
+							break;
+						offset += aligned_size;
+					}
+				}
+
+				offset = p->offset;
+				list_for_each_entry_reverse(obj, &objects, st_link) {
+					u64 aligned_size = round_up(obj->base.size,
+								    min_alignment);
+
+					vma = i915_vma_instance(obj, vm, NULL);
+					if (IS_ERR(vma))
+						continue;
+
+					if (p->step < 0) {
+						if (offset < hole_start + aligned_size)
+							break;
+						offset -= aligned_size;
+					}
+
+					err = i915_vma_pin(vma, 0, 0, offset | flags);
+					if (err) {
+						pr_err("%s(%s) pin (backward) failed with err=%d on size=%lu pages (prime=%lu), offset=%llx\n",
+						       __func__, p->name, err, npages, prime, offset);
+						goto err;
+					}
+
+					if (!drm_mm_node_allocated(&vma->node) ||
+					    i915_vma_misplaced(vma, 0, 0, offset | flags)) {
+						pr_err("%s(%s) (backward) insert failed: vma.node=%llx + %llx [allocated? %d], expected offset %llx\n",
+						       __func__, p->name, vma->node.start, vma->node.size, drm_mm_node_allocated(&vma->node),
+						       offset);
+						err = -EINVAL;
+						goto err;
+					}
+
+					i915_vma_unpin(vma);
+
+					if (p->step > 0) {
+						if (offset + aligned_size > hole_end)
+							break;
+						offset += aligned_size;
+					}
+				}
+
+				offset = p->offset;
+				list_for_each_entry_reverse(obj, &objects, st_link) {
+					u64 aligned_size = round_up(obj->base.size,
+								    min_alignment);
+
+					vma = i915_vma_instance(obj, vm, NULL);
+					if (IS_ERR(vma))
+						continue;
+
+					if (p->step < 0) {
+						if (offset < hole_start + aligned_size)
+							break;
+						offset -= aligned_size;
+					}
+
+					if (!drm_mm_node_allocated(&vma->node) ||
+					    i915_vma_misplaced(vma, 0, 0, offset | flags)) {
+						pr_err("%s(%s) (backward) moved vma.node=%llx + %llx [allocated? %d], expected offset %llx\n",
+						       __func__, p->name, vma->node.start, vma->node.size, drm_mm_node_allocated(&vma->node),
+						       offset);
+						err = -EINVAL;
+						goto err;
+					}
+
+					err = i915_vma_unbind_unlocked(vma);
+					if (err) {
+						pr_err("%s(%s) (backward) unbind of vma.node=%llx + %llx failed with err=%d\n",
+						       __func__, p->name, vma->node.start, vma->node.size,
+						       err);
+						goto err;
+					}
+
+					if (p->step > 0) {
+						if (offset + aligned_size > hole_end)
+							break;
+						offset += aligned_size;
+					}
+				}
+			}
+
+			if (igt_timeout(end_time, "%s timed out (npages=%lu, prime=%lu)\n",
+					__func__, npages, prime)) {
+				err = -EINTR;
+				goto err;
+			}
+		}
+
+		close_object_list(&objects, vm);
+		cleanup_freed_objects(vm->i915);
+	}
+
+	return 0;
+
+err:
+	close_object_list(&objects, vm);
+	return err;
+}
+
+static int walk_hole(struct i915_address_space *vm,
+		     u64 hole_start, u64 hole_end,
+		     unsigned long end_time)
+{
+	const u64 hole_size = hole_end - hole_start;
+	const unsigned long max_pages =
+		min_t(u64, ULONG_MAX - 1, hole_size >> PAGE_SHIFT);
+	unsigned long min_alignment;
+	unsigned long flags;
+	u64 size;
+
+	/* Try binding a single VMA in different positions within the hole */
+
+	flags = PIN_OFFSET_FIXED | PIN_USER;
+	if (i915_is_ggtt(vm))
+		flags |= PIN_GLOBAL;
+
+	min_alignment = i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM);
+
+	for_each_prime_number_from(size, 1, max_pages) {
+		struct drm_i915_gem_object *obj;
+		struct i915_vma *vma;
+		u64 addr;
+		int err = 0;
+
+		obj = fake_dma_object(vm->i915, size << PAGE_SHIFT);
+		if (IS_ERR(obj))
+			break;
+
+		vma = i915_vma_instance(obj, vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			goto err_put;
+		}
+
+		for (addr = hole_start;
+		     addr + obj->base.size < hole_end;
+		     addr += round_up(obj->base.size, min_alignment)) {
+			err = i915_vma_pin(vma, 0, 0, addr | flags);
+			if (err) {
+				pr_err("%s bind failed at %llx + %llx [hole %llx- %llx] with err=%d\n",
+				       __func__, addr, vma->size,
+				       hole_start, hole_end, err);
+				goto err_put;
+			}
+			i915_vma_unpin(vma);
+
+			if (!drm_mm_node_allocated(&vma->node) ||
+			    i915_vma_misplaced(vma, 0, 0, addr | flags)) {
+				pr_err("%s incorrect at %llx + %llx\n",
+				       __func__, addr, vma->size);
+				err = -EINVAL;
+				goto err_put;
+			}
+
+			err = i915_vma_unbind_unlocked(vma);
+			if (err) {
+				pr_err("%s unbind failed at %llx + %llx  with err=%d\n",
+				       __func__, addr, vma->size, err);
+				goto err_put;
+			}
+
+			GEM_BUG_ON(drm_mm_node_allocated(&vma->node));
+
+			if (igt_timeout(end_time,
+					"%s timed out at %llx\n",
+					__func__, addr)) {
+				err = -EINTR;
+				goto err_put;
+			}
+		}
+
+err_put:
+		i915_gem_object_put(obj);
+		if (err)
+			return err;
+
+		cleanup_freed_objects(vm->i915);
+	}
+
+	return 0;
+}
+
+static int pot_hole(struct i915_address_space *vm,
+		    u64 hole_start, u64 hole_end,
+		    unsigned long end_time)
+{
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+	unsigned int min_alignment;
+	unsigned long flags;
+	unsigned int pot;
+	int err = 0;
+
+	flags = PIN_OFFSET_FIXED | PIN_USER;
+	if (i915_is_ggtt(vm))
+		flags |= PIN_GLOBAL;
+
+	min_alignment = i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM);
+
+	obj = i915_gem_object_create_internal(vm->i915, 2 * I915_GTT_PAGE_SIZE);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	vma = i915_vma_instance(obj, vm, NULL);
+	if (IS_ERR(vma)) {
+		err = PTR_ERR(vma);
+		goto err_obj;
+	}
+
+	/* Insert a pair of pages across every pot boundary within the hole */
+	for (pot = fls64(hole_end - 1) - 1;
+	     pot > ilog2(2 * min_alignment);
+	     pot--) {
+		u64 step = BIT_ULL(pot);
+		u64 addr;
+
+		for (addr = round_up(hole_start + min_alignment, step) - min_alignment;
+		     hole_end > addr && hole_end - addr >= 2 * min_alignment;
+		     addr += step) {
+			err = i915_vma_pin(vma, 0, 0, addr | flags);
+			if (err) {
+				pr_err("%s failed to pin object at %llx in hole [%llx - %llx], with err=%d\n",
+				       __func__,
+				       addr,
+				       hole_start, hole_end,
+				       err);
+				goto err_obj;
+			}
+
+			if (!drm_mm_node_allocated(&vma->node) ||
+			    i915_vma_misplaced(vma, 0, 0, addr | flags)) {
+				pr_err("%s incorrect at %llx + %llx\n",
+				       __func__, addr, vma->size);
+				i915_vma_unpin(vma);
+				err = i915_vma_unbind_unlocked(vma);
+				err = -EINVAL;
+				goto err_obj;
+			}
+
+			i915_vma_unpin(vma);
+			err = i915_vma_unbind_unlocked(vma);
+			GEM_BUG_ON(err);
+		}
+
+		if (igt_timeout(end_time,
+				"%s timed out after %d/%d\n",
+				__func__, pot, fls64(hole_end - 1) - 1)) {
+			err = -EINTR;
+			goto err_obj;
+		}
+	}
+
+err_obj:
+	i915_gem_object_put(obj);
+	return err;
+}
+
+static int drunk_hole(struct i915_address_space *vm,
+		      u64 hole_start, u64 hole_end,
+		      unsigned long end_time)
+{
+	I915_RND_STATE(prng);
+	unsigned int min_alignment;
+	unsigned int size;
+	unsigned long flags;
+
+	flags = PIN_OFFSET_FIXED | PIN_USER;
+	if (i915_is_ggtt(vm))
+		flags |= PIN_GLOBAL;
+
+	min_alignment = i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM);
+
+	/* Keep creating larger objects until one cannot fit into the hole */
+	for (size = 12; (hole_end - hole_start) >> size; size++) {
+		struct drm_i915_gem_object *obj;
+		unsigned int *order, count, n;
+		struct i915_vma *vma;
+		u64 hole_size, aligned_size;
+		int err = -ENODEV;
+
+		aligned_size = max_t(u32, ilog2(min_alignment), size);
+		hole_size = (hole_end - hole_start) >> aligned_size;
+		if (hole_size > KMALLOC_MAX_SIZE / sizeof(u32))
+			hole_size = KMALLOC_MAX_SIZE / sizeof(u32);
+		count = hole_size >> 1;
+		if (!count) {
+			pr_debug("%s: hole is too small [%llx - %llx] >> %d: %lld\n",
+				 __func__, hole_start, hole_end, size, hole_size);
+			break;
+		}
+
+		do {
+			order = i915_random_order(count, &prng);
+			if (order)
+				break;
+		} while (count >>= 1);
+		if (!count)
+			return -ENOMEM;
+		GEM_BUG_ON(!order);
+
+		/* Ignore allocation failures (i.e. don't report them as
+		 * a test failure) as we are purposefully allocating very
+		 * large objects without checking that we have sufficient
+		 * memory. We expect to hit -ENOMEM.
+		 */
+
+		obj = fake_dma_object(vm->i915, BIT_ULL(size));
+		if (IS_ERR(obj)) {
+			kfree(order);
+			break;
+		}
+
+		vma = i915_vma_instance(obj, vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			goto err_obj;
+		}
+
+		GEM_BUG_ON(vma->size != BIT_ULL(size));
+
+		for (n = 0; n < count; n++) {
+			u64 addr = hole_start + order[n] * BIT_ULL(aligned_size);
+
+			err = i915_vma_pin(vma, 0, 0, addr | flags);
+			if (err) {
+				pr_err("%s failed to pin object at %llx + %llx in hole [%llx - %llx], with err=%d\n",
+				       __func__,
+				       addr, BIT_ULL(size),
+				       hole_start, hole_end,
+				       err);
+				goto err_obj;
+			}
+
+			if (!drm_mm_node_allocated(&vma->node) ||
+			    i915_vma_misplaced(vma, 0, 0, addr | flags)) {
+				pr_err("%s incorrect at %llx + %llx\n",
+				       __func__, addr, BIT_ULL(size));
+				i915_vma_unpin(vma);
+				err = i915_vma_unbind_unlocked(vma);
+				err = -EINVAL;
+				goto err_obj;
+			}
+
+			i915_vma_unpin(vma);
+			err = i915_vma_unbind_unlocked(vma);
+			GEM_BUG_ON(err);
+
+			if (igt_timeout(end_time,
+					"%s timed out after %d/%d\n",
+					__func__, n, count)) {
+				err = -EINTR;
+				goto err_obj;
+			}
+		}
+
+err_obj:
+		i915_gem_object_put(obj);
+		kfree(order);
+		if (err)
+			return err;
+
+		cleanup_freed_objects(vm->i915);
+	}
+
+	return 0;
+}
+
+static int __shrink_hole(struct i915_address_space *vm,
+			 u64 hole_start, u64 hole_end,
+			 unsigned long end_time)
+{
+	struct drm_i915_gem_object *obj;
+	unsigned long flags = PIN_OFFSET_FIXED | PIN_USER;
+	unsigned int min_alignment;
+	unsigned int order = 12;
+	LIST_HEAD(objects);
+	int err = 0;
+	u64 addr;
+
+	min_alignment = i915_vm_min_alignment(vm, INTEL_MEMORY_SYSTEM);
+
+	/* Keep creating larger objects until one cannot fit into the hole */
+	for (addr = hole_start; addr < hole_end; ) {
+		struct i915_vma *vma;
+		u64 size = BIT_ULL(order++);
+
+		size = min(size, hole_end - addr);
+		obj = fake_dma_object(vm->i915, size);
+		if (IS_ERR(obj)) {
+			err = PTR_ERR(obj);
+			break;
+		}
+
+		list_add(&obj->st_link, &objects);
+
+		vma = i915_vma_instance(obj, vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			break;
+		}
+
+		GEM_BUG_ON(vma->size != size);
+
+		err = i915_vma_pin(vma, 0, 0, addr | flags);
+		if (err) {
+			pr_err("%s failed to pin object at %llx + %llx in hole [%llx - %llx], with err=%d\n",
+			       __func__, addr, size, hole_start, hole_end, err);
+			break;
+		}
+
+		if (!drm_mm_node_allocated(&vma->node) ||
+		    i915_vma_misplaced(vma, 0, 0, addr | flags)) {
+			pr_err("%s incorrect at %llx + %llx\n",
+			       __func__, addr, size);
+			i915_vma_unpin(vma);
+			err = i915_vma_unbind_unlocked(vma);
+			err = -EINVAL;
+			break;
+		}
+
+		i915_vma_unpin(vma);
+		addr += round_up(size, min_alignment);
+
+		/*
+		 * Since we are injecting allocation faults at random intervals,
+		 * wait for this allocation to complete before we change the
+		 * faultinjection.
+		 */
+		err = i915_vma_sync(vma);
+		if (err)
+			break;
+
+		if (igt_timeout(end_time,
+				"%s timed out at ofset %llx [%llx - %llx]\n",
+				__func__, addr, hole_start, hole_end)) {
+			err = -EINTR;
+			break;
+		}
+	}
+
+	close_object_list(&objects, vm);
+	cleanup_freed_objects(vm->i915);
+	return err;
+}
+
+static int shrink_hole(struct i915_address_space *vm,
+		       u64 hole_start, u64 hole_end,
+		       unsigned long end_time)
+{
+	unsigned long prime;
+	int err;
+
+	vm->fault_attr.probability = 999;
+	atomic_set(&vm->fault_attr.times, -1);
+
+	for_each_prime_number_from(prime, 0, ULONG_MAX - 1) {
+		vm->fault_attr.interval = prime;
+		err = __shrink_hole(vm, hole_start, hole_end, end_time);
+		if (err)
+			break;
+	}
+
+	memset(&vm->fault_attr, 0, sizeof(vm->fault_attr));
+
+	return err;
+}
+
+static int shrink_boom(struct i915_address_space *vm,
+		       u64 hole_start, u64 hole_end,
+		       unsigned long end_time)
+{
+	unsigned int sizes[] = { SZ_2M, SZ_1G };
+	struct drm_i915_gem_object *purge;
+	struct drm_i915_gem_object *explode;
+	int err;
+	int i;
+
+	/*
+	 * Catch the case which shrink_hole seems to miss. The setup here
+	 * requires invoking the shrinker as we do the alloc_pt/alloc_pd, while
+	 * ensuring that all vma assiocated with the respective pd/pdp are
+	 * unpinned at the time.
+	 */
+
+	for (i = 0; i < ARRAY_SIZE(sizes); ++i) {
+		unsigned int flags = PIN_USER | PIN_OFFSET_FIXED;
+		unsigned int size = sizes[i];
+		struct i915_vma *vma;
+
+		purge = fake_dma_object(vm->i915, size);
+		if (IS_ERR(purge))
+			return PTR_ERR(purge);
+
+		vma = i915_vma_instance(purge, vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			goto err_purge;
+		}
+
+		err = i915_vma_pin(vma, 0, 0, flags);
+		if (err)
+			goto err_purge;
+
+		/* Should now be ripe for purging */
+		i915_vma_unpin(vma);
+
+		explode = fake_dma_object(vm->i915, size);
+		if (IS_ERR(explode)) {
+			err = PTR_ERR(explode);
+			goto err_purge;
+		}
+
+		vm->fault_attr.probability = 100;
+		vm->fault_attr.interval = 1;
+		atomic_set(&vm->fault_attr.times, -1);
+
+		vma = i915_vma_instance(explode, vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			goto err_explode;
+		}
+
+		err = i915_vma_pin(vma, 0, 0, flags | size);
+		if (err)
+			goto err_explode;
+
+		i915_vma_unpin(vma);
+
+		i915_gem_object_put(purge);
+		i915_gem_object_put(explode);
+
+		memset(&vm->fault_attr, 0, sizeof(vm->fault_attr));
+		cleanup_freed_objects(vm->i915);
+	}
+
+	return 0;
+
+err_explode:
+	i915_gem_object_put(explode);
+err_purge:
+	i915_gem_object_put(purge);
+	memset(&vm->fault_attr, 0, sizeof(vm->fault_attr));
+	return err;
+}
+
+static int misaligned_case(struct i915_address_space *vm, struct intel_memory_region *mr,
+			   u64 addr, u64 size, unsigned long flags)
+{
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+	int err = 0;
+	u64 expected_vma_size, expected_node_size;
+	bool is_stolen = mr->type == INTEL_MEMORY_STOLEN_SYSTEM ||
+			 mr->type == INTEL_MEMORY_STOLEN_LOCAL;
+
+	obj = i915_gem_object_create_region(mr, size, 0, I915_BO_ALLOC_GPU_ONLY);
+	if (IS_ERR(obj)) {
+		/* if iGVT-g or DMAR is active, stolen mem will be uninitialized */
+		if (PTR_ERR(obj) == -ENODEV && is_stolen)
+			return 0;
+		return PTR_ERR(obj);
+	}
+
+	vma = i915_vma_instance(obj, vm, NULL);
+	if (IS_ERR(vma)) {
+		err = PTR_ERR(vma);
+		goto err_put;
+	}
+
+	err = i915_vma_pin(vma, 0, 0, addr | flags);
+	if (err)
+		goto err_put;
+	i915_vma_unpin(vma);
+
+	if (!drm_mm_node_allocated(&vma->node)) {
+		err = -EINVAL;
+		goto err_put;
+	}
+
+	if (i915_vma_misplaced(vma, 0, 0, addr | flags)) {
+		err = -EINVAL;
+		goto err_put;
+	}
+
+	expected_vma_size = round_up(size, 1 << (ffs(vma->resource->page_sizes_gtt) - 1));
+	expected_node_size = expected_vma_size;
+
+	if (HAS_64K_PAGES(vm->i915) && i915_gem_object_is_lmem(obj)) {
+		expected_vma_size = round_up(size, I915_GTT_PAGE_SIZE_64K);
+		expected_node_size = round_up(size, I915_GTT_PAGE_SIZE_64K);
+	}
+
+	if (vma->size != expected_vma_size || vma->node.size != expected_node_size) {
+		err = i915_vma_unbind_unlocked(vma);
+		err = -EBADSLT;
+		goto err_put;
+	}
+
+	err = i915_vma_unbind_unlocked(vma);
+	if (err)
+		goto err_put;
+
+	GEM_BUG_ON(drm_mm_node_allocated(&vma->node));
+
+err_put:
+	i915_gem_object_put(obj);
+	cleanup_freed_objects(vm->i915);
+	return err;
+}
+
+static int misaligned_pin(struct i915_address_space *vm,
+			  u64 hole_start, u64 hole_end,
+			  unsigned long end_time)
+{
+	struct intel_memory_region *mr;
+	enum intel_region_id id;
+	unsigned long flags = PIN_OFFSET_FIXED | PIN_USER;
+	int err = 0;
+	u64 hole_size = hole_end - hole_start;
+
+	if (i915_is_ggtt(vm))
+		flags |= PIN_GLOBAL;
+
+	for_each_memory_region(mr, vm->i915, id) {
+		u64 min_alignment = i915_vm_min_alignment(vm, mr->type);
+		u64 size = min_alignment;
+		u64 addr = round_down(hole_start + (hole_size / 2), min_alignment);
+
+		/* avoid -ENOSPC on very small hole setups */
+		if (hole_size < 3 * min_alignment)
+			continue;
+
+		/* we can't test < 4k alignment due to flags being encoded in lower bits */
+		if (min_alignment != I915_GTT_PAGE_SIZE_4K) {
+			err = misaligned_case(vm, mr, addr + (min_alignment / 2), size, flags);
+			/* misaligned should error with -EINVAL*/
+			if (!err)
+				err = -EBADSLT;
+			if (err != -EINVAL)
+				return err;
+		}
+
+		/* test for vma->size expansion to min page size */
+		err = misaligned_case(vm, mr, addr, PAGE_SIZE, flags);
+		if (err)
+			return err;
+
+		/* test for intermediate size not expanding vma->size for large alignments */
+		err = misaligned_case(vm, mr, addr, size / 2, flags);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static int exercise_ppgtt(struct drm_i915_private *dev_priv,
+			  int (*func)(struct i915_address_space *vm,
+				      u64 hole_start, u64 hole_end,
+				      unsigned long end_time))
+{
+	struct i915_ppgtt *ppgtt;
+	IGT_TIMEOUT(end_time);
+	struct file *file;
+	int err;
+
+	if (!HAS_FULL_PPGTT(dev_priv))
+		return 0;
+
+	file = mock_file(dev_priv);
+	if (IS_ERR(file))
+		return PTR_ERR(file);
+
+	ppgtt = i915_ppgtt_create(to_gt(dev_priv), 0);
+	if (IS_ERR(ppgtt)) {
+		err = PTR_ERR(ppgtt);
+		goto out_free;
+	}
+	GEM_BUG_ON(offset_in_page(ppgtt->vm.total));
+	assert_vm_alive(&ppgtt->vm);
+
+	err = func(&ppgtt->vm, 0, ppgtt->vm.total, end_time);
+
+	i915_vm_put(&ppgtt->vm);
+
+out_free:
+	fput(file);
+	return err;
+}
+
+static int igt_ppgtt_fill(void *arg)
+{
+	return exercise_ppgtt(arg, fill_hole);
+}
+
+static int igt_ppgtt_walk(void *arg)
+{
+	return exercise_ppgtt(arg, walk_hole);
+}
+
+static int igt_ppgtt_pot(void *arg)
+{
+	return exercise_ppgtt(arg, pot_hole);
+}
+
+static int igt_ppgtt_drunk(void *arg)
+{
+	return exercise_ppgtt(arg, drunk_hole);
+}
+
+static int igt_ppgtt_lowlevel(void *arg)
+{
+	return exercise_ppgtt(arg, lowlevel_hole);
+}
+
+static int igt_ppgtt_shrink(void *arg)
+{
+	return exercise_ppgtt(arg, shrink_hole);
+}
+
+static int igt_ppgtt_shrink_boom(void *arg)
+{
+	return exercise_ppgtt(arg, shrink_boom);
+}
+
+static int igt_ppgtt_misaligned_pin(void *arg)
+{
+	return exercise_ppgtt(arg, misaligned_pin);
+}
+
+static int sort_holes(void *priv, const struct list_head *A,
+		      const struct list_head *B)
+{
+	struct drm_mm_node *a = list_entry(A, typeof(*a), hole_stack);
+	struct drm_mm_node *b = list_entry(B, typeof(*b), hole_stack);
+
+	if (a->start < b->start)
+		return -1;
+	else
+		return 1;
+}
+
+static int exercise_ggtt(struct drm_i915_private *i915,
+			 int (*func)(struct i915_address_space *vm,
+				     u64 hole_start, u64 hole_end,
+				     unsigned long end_time))
+{
+	struct i915_ggtt *ggtt = to_gt(i915)->ggtt;
+	u64 hole_start, hole_end, last = 0;
+	struct drm_mm_node *node;
+	IGT_TIMEOUT(end_time);
+	int err = 0;
+
+restart:
+	list_sort(NULL, &ggtt->vm.mm.hole_stack, sort_holes);
+	drm_mm_for_each_hole(node, &ggtt->vm.mm, hole_start, hole_end) {
+		if (hole_start < last)
+			continue;
+
+		if (ggtt->vm.mm.color_adjust)
+			ggtt->vm.mm.color_adjust(node, 0,
+						 &hole_start, &hole_end);
+		if (hole_start >= hole_end)
+			continue;
+
+		err = func(&ggtt->vm, hole_start, hole_end, end_time);
+		if (err)
+			break;
+
+		/* As we have manipulated the drm_mm, the list may be corrupt */
+		last = hole_end;
+		goto restart;
+	}
+
+	return err;
+}
+
+static int igt_ggtt_fill(void *arg)
+{
+	return exercise_ggtt(arg, fill_hole);
+}
+
+static int igt_ggtt_walk(void *arg)
+{
+	return exercise_ggtt(arg, walk_hole);
+}
+
+static int igt_ggtt_pot(void *arg)
+{
+	return exercise_ggtt(arg, pot_hole);
+}
+
+static int igt_ggtt_drunk(void *arg)
+{
+	return exercise_ggtt(arg, drunk_hole);
+}
+
+static int igt_ggtt_lowlevel(void *arg)
+{
+	return exercise_ggtt(arg, lowlevel_hole);
+}
+
+static int igt_ggtt_misaligned_pin(void *arg)
+{
+	return exercise_ggtt(arg, misaligned_pin);
+}
+
+static int igt_ggtt_page(void *arg)
+{
+	const unsigned int count = PAGE_SIZE/sizeof(u32);
+	I915_RND_STATE(prng);
+	struct drm_i915_private *i915 = arg;
+	struct i915_ggtt *ggtt = to_gt(i915)->ggtt;
+	struct drm_i915_gem_object *obj;
+	intel_wakeref_t wakeref;
+	struct drm_mm_node tmp;
+	unsigned int *order, n;
+	int err;
+
+	if (!i915_ggtt_has_aperture(ggtt))
+		return 0;
+
+	obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	err = i915_gem_object_pin_pages_unlocked(obj);
+	if (err)
+		goto out_free;
+
+	memset(&tmp, 0, sizeof(tmp));
+	mutex_lock(&ggtt->vm.mutex);
+	err = drm_mm_insert_node_in_range(&ggtt->vm.mm, &tmp,
+					  count * PAGE_SIZE, 0,
+					  I915_COLOR_UNEVICTABLE,
+					  0, ggtt->mappable_end,
+					  DRM_MM_INSERT_LOW);
+	mutex_unlock(&ggtt->vm.mutex);
+	if (err)
+		goto out_unpin;
+
+	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+
+	for (n = 0; n < count; n++) {
+		u64 offset = tmp.start + n * PAGE_SIZE;
+
+		ggtt->vm.insert_page(&ggtt->vm,
+				     i915_gem_object_get_dma_address(obj, 0),
+				     offset,
+				     i915_gem_get_pat_index(i915,
+							    I915_CACHE_NONE),
+				     0);
+	}
+
+	order = i915_random_order(count, &prng);
+	if (!order) {
+		err = -ENOMEM;
+		goto out_remove;
+	}
+
+	for (n = 0; n < count; n++) {
+		u64 offset = tmp.start + order[n] * PAGE_SIZE;
+		u32 __iomem *vaddr;
+
+		vaddr = io_mapping_map_atomic_wc(&ggtt->iomap, offset);
+		iowrite32(n, vaddr + n);
+		io_mapping_unmap_atomic(vaddr);
+	}
+	intel_gt_flush_ggtt_writes(ggtt->vm.gt);
+
+	i915_random_reorder(order, count, &prng);
+	for (n = 0; n < count; n++) {
+		u64 offset = tmp.start + order[n] * PAGE_SIZE;
+		u32 __iomem *vaddr;
+		u32 val;
+
+		vaddr = io_mapping_map_atomic_wc(&ggtt->iomap, offset);
+		val = ioread32(vaddr + n);
+		io_mapping_unmap_atomic(vaddr);
+
+		if (val != n) {
+			pr_err("insert page failed: found %d, expected %d\n",
+			       val, n);
+			err = -EINVAL;
+			break;
+		}
+	}
+
+	kfree(order);
+out_remove:
+	ggtt->vm.clear_range(&ggtt->vm, tmp.start, tmp.size);
+	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+	mutex_lock(&ggtt->vm.mutex);
+	drm_mm_remove_node(&tmp);
+	mutex_unlock(&ggtt->vm.mutex);
+out_unpin:
+	i915_gem_object_unpin_pages(obj);
+out_free:
+	i915_gem_object_put(obj);
+	return err;
+}
+
+static void track_vma_bind(struct i915_vma *vma)
+{
+	struct drm_i915_gem_object *obj = vma->obj;
+
+	__i915_gem_object_pin_pages(obj);
+
+	GEM_BUG_ON(atomic_read(&vma->pages_count));
+	atomic_set(&vma->pages_count, I915_VMA_PAGES_ACTIVE);
+	__i915_gem_object_pin_pages(obj);
+	vma->pages = obj->mm.pages;
+	vma->resource->bi.pages = vma->pages;
+
+	mutex_lock(&vma->vm->mutex);
+	list_move_tail(&vma->vm_link, &vma->vm->bound_list);
+	mutex_unlock(&vma->vm->mutex);
+}
+
+static int exercise_mock(struct drm_i915_private *i915,
+			 int (*func)(struct i915_address_space *vm,
+				     u64 hole_start, u64 hole_end,
+				     unsigned long end_time))
+{
+	const u64 limit = totalram_pages() << PAGE_SHIFT;
+	struct i915_address_space *vm;
+	struct i915_gem_context *ctx;
+	IGT_TIMEOUT(end_time);
+	int err;
+
+	ctx = mock_context(i915, "mock");
+	if (!ctx)
+		return -ENOMEM;
+
+	vm = i915_gem_context_get_eb_vm(ctx);
+	err = func(vm, 0, min(vm->total, limit), end_time);
+	i915_vm_put(vm);
+
+	mock_context_close(ctx);
+	return err;
+}
+
+static int igt_mock_fill(void *arg)
+{
+	struct i915_ggtt *ggtt = arg;
+
+	return exercise_mock(ggtt->vm.i915, fill_hole);
+}
+
+static int igt_mock_walk(void *arg)
+{
+	struct i915_ggtt *ggtt = arg;
+
+	return exercise_mock(ggtt->vm.i915, walk_hole);
+}
+
+static int igt_mock_pot(void *arg)
+{
+	struct i915_ggtt *ggtt = arg;
+
+	return exercise_mock(ggtt->vm.i915, pot_hole);
+}
+
+static int igt_mock_drunk(void *arg)
+{
+	struct i915_ggtt *ggtt = arg;
+
+	return exercise_mock(ggtt->vm.i915, drunk_hole);
+}
+
+static int reserve_gtt_with_resource(struct i915_vma *vma, u64 offset)
+{
+	struct i915_address_space *vm = vma->vm;
+	struct i915_vma_resource *vma_res;
+	struct drm_i915_gem_object *obj = vma->obj;
+	int err;
+
+	vma_res = i915_vma_resource_alloc();
+	if (IS_ERR(vma_res))
+		return PTR_ERR(vma_res);
+
+	mutex_lock(&vm->mutex);
+	err = i915_gem_gtt_reserve(vm, NULL, &vma->node, obj->base.size,
+				   offset,
+				   obj->pat_index,
+				   0);
+	if (!err) {
+		i915_vma_resource_init_from_vma(vma_res, vma);
+		vma->resource = vma_res;
+	} else {
+		kfree(vma_res);
+	}
+	mutex_unlock(&vm->mutex);
+
+	return err;
+}
+
+static int igt_gtt_reserve(void *arg)
+{
+	struct i915_ggtt *ggtt = arg;
+	struct drm_i915_gem_object *obj, *on;
+	I915_RND_STATE(prng);
+	LIST_HEAD(objects);
+	u64 total;
+	int err = -ENODEV;
+
+	/* i915_gem_gtt_reserve() tries to reserve the precise range
+	 * for the node, and evicts if it has to. So our test checks that
+	 * it can give us the requsted space and prevent overlaps.
+	 */
+
+	/* Start by filling the GGTT */
+	for (total = 0;
+	     total + 2 * I915_GTT_PAGE_SIZE <= ggtt->vm.total;
+	     total += 2 * I915_GTT_PAGE_SIZE) {
+		struct i915_vma *vma;
+
+		obj = i915_gem_object_create_internal(ggtt->vm.i915,
+						      2 * PAGE_SIZE);
+		if (IS_ERR(obj)) {
+			err = PTR_ERR(obj);
+			goto out;
+		}
+
+		err = i915_gem_object_pin_pages_unlocked(obj);
+		if (err) {
+			i915_gem_object_put(obj);
+			goto out;
+		}
+
+		list_add(&obj->st_link, &objects);
+		vma = i915_vma_instance(obj, &ggtt->vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			goto out;
+		}
+
+		err = reserve_gtt_with_resource(vma, total);
+		if (err) {
+			pr_err("i915_gem_gtt_reserve (pass 1) failed at %llu/%llu with err=%d\n",
+			       total, ggtt->vm.total, err);
+			goto out;
+		}
+		track_vma_bind(vma);
+
+		GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
+		if (vma->node.start != total ||
+		    vma->node.size != 2*I915_GTT_PAGE_SIZE) {
+			pr_err("i915_gem_gtt_reserve (pass 1) placement failed, found (%llx + %llx), expected (%llx + %llx)\n",
+			       vma->node.start, vma->node.size,
+			       total, 2*I915_GTT_PAGE_SIZE);
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	/* Now we start forcing evictions */
+	for (total = I915_GTT_PAGE_SIZE;
+	     total + 2 * I915_GTT_PAGE_SIZE <= ggtt->vm.total;
+	     total += 2 * I915_GTT_PAGE_SIZE) {
+		struct i915_vma *vma;
+
+		obj = i915_gem_object_create_internal(ggtt->vm.i915,
+						      2 * PAGE_SIZE);
+		if (IS_ERR(obj)) {
+			err = PTR_ERR(obj);
+			goto out;
+		}
+
+		err = i915_gem_object_pin_pages_unlocked(obj);
+		if (err) {
+			i915_gem_object_put(obj);
+			goto out;
+		}
+
+		list_add(&obj->st_link, &objects);
+
+		vma = i915_vma_instance(obj, &ggtt->vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			goto out;
+		}
+
+		err = reserve_gtt_with_resource(vma, total);
+		if (err) {
+			pr_err("i915_gem_gtt_reserve (pass 2) failed at %llu/%llu with err=%d\n",
+			       total, ggtt->vm.total, err);
+			goto out;
+		}
+		track_vma_bind(vma);
+
+		GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
+		if (vma->node.start != total ||
+		    vma->node.size != 2*I915_GTT_PAGE_SIZE) {
+			pr_err("i915_gem_gtt_reserve (pass 2) placement failed, found (%llx + %llx), expected (%llx + %llx)\n",
+			       vma->node.start, vma->node.size,
+			       total, 2*I915_GTT_PAGE_SIZE);
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	/* And then try at random */
+	list_for_each_entry_safe(obj, on, &objects, st_link) {
+		struct i915_vma *vma;
+		u64 offset;
+
+		vma = i915_vma_instance(obj, &ggtt->vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			goto out;
+		}
+
+		err = i915_vma_unbind_unlocked(vma);
+		if (err) {
+			pr_err("i915_vma_unbind failed with err=%d!\n", err);
+			goto out;
+		}
+
+		offset = igt_random_offset(&prng,
+					   0, ggtt->vm.total,
+					   2 * I915_GTT_PAGE_SIZE,
+					   I915_GTT_MIN_ALIGNMENT);
+
+		err = reserve_gtt_with_resource(vma, offset);
+		if (err) {
+			pr_err("i915_gem_gtt_reserve (pass 3) failed at %llu/%llu with err=%d\n",
+			       total, ggtt->vm.total, err);
+			goto out;
+		}
+		track_vma_bind(vma);
+
+		GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
+		if (vma->node.start != offset ||
+		    vma->node.size != 2*I915_GTT_PAGE_SIZE) {
+			pr_err("i915_gem_gtt_reserve (pass 3) placement failed, found (%llx + %llx), expected (%llx + %llx)\n",
+			       vma->node.start, vma->node.size,
+			       offset, 2*I915_GTT_PAGE_SIZE);
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+out:
+	list_for_each_entry_safe(obj, on, &objects, st_link) {
+		i915_gem_object_unpin_pages(obj);
+		i915_gem_object_put(obj);
+	}
+	return err;
+}
+
+static int insert_gtt_with_resource(struct i915_vma *vma)
+{
+	struct i915_address_space *vm = vma->vm;
+	struct i915_vma_resource *vma_res;
+	struct drm_i915_gem_object *obj = vma->obj;
+	int err;
+
+	vma_res = i915_vma_resource_alloc();
+	if (IS_ERR(vma_res))
+		return PTR_ERR(vma_res);
+
+	mutex_lock(&vm->mutex);
+	err = i915_gem_gtt_insert(vm, NULL, &vma->node, obj->base.size, 0,
+				  obj->pat_index, 0, vm->total, 0);
+	if (!err) {
+		i915_vma_resource_init_from_vma(vma_res, vma);
+		vma->resource = vma_res;
+	} else {
+		kfree(vma_res);
+	}
+	mutex_unlock(&vm->mutex);
+
+	return err;
+}
+
+static int igt_gtt_insert(void *arg)
+{
+	struct i915_ggtt *ggtt = arg;
+	struct drm_i915_gem_object *obj, *on;
+	struct drm_mm_node tmp = {};
+	const struct invalid_insert {
+		u64 size;
+		u64 alignment;
+		u64 start, end;
+	} invalid_insert[] = {
+		{
+			ggtt->vm.total + I915_GTT_PAGE_SIZE, 0,
+			0, ggtt->vm.total,
+		},
+		{
+			2*I915_GTT_PAGE_SIZE, 0,
+			0, I915_GTT_PAGE_SIZE,
+		},
+		{
+			-(u64)I915_GTT_PAGE_SIZE, 0,
+			0, 4*I915_GTT_PAGE_SIZE,
+		},
+		{
+			-(u64)2*I915_GTT_PAGE_SIZE, 2*I915_GTT_PAGE_SIZE,
+			0, 4*I915_GTT_PAGE_SIZE,
+		},
+		{
+			I915_GTT_PAGE_SIZE, I915_GTT_MIN_ALIGNMENT << 1,
+			I915_GTT_MIN_ALIGNMENT, I915_GTT_MIN_ALIGNMENT << 1,
+		},
+		{}
+	}, *ii;
+	LIST_HEAD(objects);
+	u64 total;
+	int err = -ENODEV;
+
+	/* i915_gem_gtt_insert() tries to allocate some free space in the GTT
+	 * to the node, evicting if required.
+	 */
+
+	/* Check a couple of obviously invalid requests */
+	for (ii = invalid_insert; ii->size; ii++) {
+		mutex_lock(&ggtt->vm.mutex);
+		err = i915_gem_gtt_insert(&ggtt->vm, NULL, &tmp,
+					  ii->size, ii->alignment,
+					  I915_COLOR_UNEVICTABLE,
+					  ii->start, ii->end,
+					  0);
+		mutex_unlock(&ggtt->vm.mutex);
+		if (err != -ENOSPC) {
+			pr_err("Invalid i915_gem_gtt_insert(.size=%llx, .alignment=%llx, .start=%llx, .end=%llx) succeeded (err=%d)\n",
+			       ii->size, ii->alignment, ii->start, ii->end,
+			       err);
+			return -EINVAL;
+		}
+	}
+
+	/* Start by filling the GGTT */
+	for (total = 0;
+	     total + I915_GTT_PAGE_SIZE <= ggtt->vm.total;
+	     total += I915_GTT_PAGE_SIZE) {
+		struct i915_vma *vma;
+
+		obj = i915_gem_object_create_internal(ggtt->vm.i915,
+						      I915_GTT_PAGE_SIZE);
+		if (IS_ERR(obj)) {
+			err = PTR_ERR(obj);
+			goto out;
+		}
+
+		err = i915_gem_object_pin_pages_unlocked(obj);
+		if (err) {
+			i915_gem_object_put(obj);
+			goto out;
+		}
+
+		list_add(&obj->st_link, &objects);
+
+		vma = i915_vma_instance(obj, &ggtt->vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			goto out;
+		}
+
+		err = insert_gtt_with_resource(vma);
+		if (err == -ENOSPC) {
+			/* maxed out the GGTT space */
+			i915_gem_object_put(obj);
+			break;
+		}
+		if (err) {
+			pr_err("i915_gem_gtt_insert (pass 1) failed at %llu/%llu with err=%d\n",
+			       total, ggtt->vm.total, err);
+			goto out;
+		}
+		track_vma_bind(vma);
+		__i915_vma_pin(vma);
+
+		GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
+	}
+
+	list_for_each_entry(obj, &objects, st_link) {
+		struct i915_vma *vma;
+
+		vma = i915_vma_instance(obj, &ggtt->vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			goto out;
+		}
+
+		if (!drm_mm_node_allocated(&vma->node)) {
+			pr_err("VMA was unexpectedly evicted!\n");
+			err = -EINVAL;
+			goto out;
+		}
+
+		__i915_vma_unpin(vma);
+	}
+
+	/* If we then reinsert, we should find the same hole */
+	list_for_each_entry_safe(obj, on, &objects, st_link) {
+		struct i915_vma *vma;
+		u64 offset;
+
+		vma = i915_vma_instance(obj, &ggtt->vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			goto out;
+		}
+
+		GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
+		offset = vma->node.start;
+
+		err = i915_vma_unbind_unlocked(vma);
+		if (err) {
+			pr_err("i915_vma_unbind failed with err=%d!\n", err);
+			goto out;
+		}
+
+		err = insert_gtt_with_resource(vma);
+		if (err) {
+			pr_err("i915_gem_gtt_insert (pass 2) failed at %llu/%llu with err=%d\n",
+			       total, ggtt->vm.total, err);
+			goto out;
+		}
+		track_vma_bind(vma);
+
+		GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
+		if (vma->node.start != offset) {
+			pr_err("i915_gem_gtt_insert did not return node to its previous location (the only hole), expected address %llx, found %llx\n",
+			       offset, vma->node.start);
+			err = -EINVAL;
+			goto out;
+		}
+	}
+
+	/* And then force evictions */
+	for (total = 0;
+	     total + 2 * I915_GTT_PAGE_SIZE <= ggtt->vm.total;
+	     total += 2 * I915_GTT_PAGE_SIZE) {
+		struct i915_vma *vma;
+
+		obj = i915_gem_object_create_internal(ggtt->vm.i915,
+						      2 * I915_GTT_PAGE_SIZE);
+		if (IS_ERR(obj)) {
+			err = PTR_ERR(obj);
+			goto out;
+		}
+
+		err = i915_gem_object_pin_pages_unlocked(obj);
+		if (err) {
+			i915_gem_object_put(obj);
+			goto out;
+		}
+
+		list_add(&obj->st_link, &objects);
+
+		vma = i915_vma_instance(obj, &ggtt->vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			goto out;
+		}
+
+		err = insert_gtt_with_resource(vma);
+		if (err) {
+			pr_err("i915_gem_gtt_insert (pass 3) failed at %llu/%llu with err=%d\n",
+			       total, ggtt->vm.total, err);
+			goto out;
+		}
+		track_vma_bind(vma);
+
+		GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
+	}
+
+out:
+	list_for_each_entry_safe(obj, on, &objects, st_link) {
+		i915_gem_object_unpin_pages(obj);
+		i915_gem_object_put(obj);
+	}
+	return err;
+}
+
+int i915_gem_gtt_mock_selftests(void)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_mock_drunk),
+		SUBTEST(igt_mock_walk),
+		SUBTEST(igt_mock_pot),
+		SUBTEST(igt_mock_fill),
+		SUBTEST(igt_gtt_reserve),
+		SUBTEST(igt_gtt_insert),
+	};
+	struct drm_i915_private *i915;
+	struct intel_gt *gt;
+	int err;
+
+	i915 = mock_gem_device();
+	if (!i915)
+		return -ENOMEM;
+
+	/* allocate the ggtt */
+	err = intel_gt_assign_ggtt(to_gt(i915));
+	if (err)
+		goto out_put;
+
+	gt = to_gt(i915);
+
+	mock_init_ggtt(gt);
+
+	err = i915_subtests(tests, gt->ggtt);
+
+	mock_device_flush(i915);
+	i915_gem_drain_freed_objects(i915);
+	mock_fini_ggtt(gt->ggtt);
+
+out_put:
+	mock_destroy_device(i915);
+	return err;
+}
+
+int i915_gem_gtt_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_ppgtt_alloc),
+		SUBTEST(igt_ppgtt_lowlevel),
+		SUBTEST(igt_ppgtt_drunk),
+		SUBTEST(igt_ppgtt_walk),
+		SUBTEST(igt_ppgtt_pot),
+		SUBTEST(igt_ppgtt_fill),
+		SUBTEST(igt_ppgtt_shrink),
+		SUBTEST(igt_ppgtt_shrink_boom),
+		SUBTEST(igt_ppgtt_misaligned_pin),
+		SUBTEST(igt_ggtt_lowlevel),
+		SUBTEST(igt_ggtt_drunk),
+		SUBTEST(igt_ggtt_walk),
+		SUBTEST(igt_ggtt_pot),
+		SUBTEST(igt_ggtt_fill),
+		SUBTEST(igt_ggtt_page),
+		SUBTEST(igt_ggtt_misaligned_pin),
+	};
+
+	GEM_BUG_ON(offset_in_page(to_gt(i915)->ggtt->vm.total));
+
+	return i915_live_subtests(tests, i915);
+}
diff --git a/drivers/gpu/drm/i915/selftests/i915_live_selftests.h b/drivers/gpu/drm/i915/selftests/i915_live_selftests.h
new file mode 100644
index 0000000000..5aee6c9a82
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_live_selftests.h
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef selftest
+#define selftest(x, y)
+#endif
+
+/*
+ * List each unit test as selftest(name, function)
+ *
+ * The name is used as both an enum and expanded as subtest__name to create
+ * a module parameter. It must be unique and legal for a C identifier.
+ *
+ * The function should be of type int function(void). It may be conditionally
+ * compiled using #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST).
+ *
+ * Tests are executed in order by igt/i915_selftest
+ */
+selftest(sanitycheck, i915_live_sanitycheck) /* keep first (igt selfcheck) */
+selftest(uncore, intel_uncore_live_selftests)
+selftest(workarounds, intel_workarounds_live_selftests)
+selftest(gt_engines, intel_engine_live_selftests)
+selftest(gt_timelines, intel_timeline_live_selftests)
+selftest(gt_contexts, intel_context_live_selftests)
+selftest(gt_lrc, intel_lrc_live_selftests)
+selftest(gt_mocs, intel_mocs_live_selftests)
+selftest(gt_pm, intel_gt_pm_live_selftests)
+selftest(gt_heartbeat, intel_heartbeat_live_selftests)
+selftest(gt_tlb, intel_tlb_live_selftests)
+selftest(requests, i915_request_live_selftests)
+selftest(migrate, intel_migrate_live_selftests)
+selftest(active, i915_active_live_selftests)
+selftest(objects, i915_gem_object_live_selftests)
+selftest(mman, i915_gem_mman_live_selftests)
+selftest(dmabuf, i915_gem_dmabuf_live_selftests)
+selftest(vma, i915_vma_live_selftests)
+selftest(coherency, i915_gem_coherency_live_selftests)
+selftest(gtt, i915_gem_gtt_live_selftests)
+selftest(gem, i915_gem_live_selftests)
+selftest(evict, i915_gem_evict_live_selftests)
+selftest(hugepages, i915_gem_huge_page_live_selftests)
+selftest(gem_contexts, i915_gem_context_live_selftests)
+selftest(client, i915_gem_client_blt_live_selftests)
+selftest(gem_migrate, i915_gem_migrate_live_selftests)
+selftest(reset, intel_reset_live_selftests)
+selftest(memory_region, intel_memory_region_live_selftests)
+selftest(hangcheck, intel_hangcheck_live_selftests)
+selftest(execlists, intel_execlists_live_selftests)
+selftest(ring_submission, intel_ring_submission_live_selftests)
+selftest(perf, i915_perf_live_selftests)
+selftest(slpc, intel_slpc_live_selftests)
+selftest(guc, intel_guc_live_selftests)
+selftest(guc_multi_lrc, intel_guc_multi_lrc_live_selftests)
+selftest(guc_hang, intel_guc_hang_check)
+/* Here be dragons: keep last to run last! */
+selftest(late_gt_pm, intel_gt_pm_late_selftests)
diff --git a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
new file mode 100644
index 0000000000..0c22e0fc90
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef selftest
+#define selftest(x, y)
+#endif
+
+/*
+ * List each unit test as selftest(name, function)
+ *
+ * The name is used as both an enum and expanded as subtest__name to create
+ * a module parameter. It must be unique and legal for a C identifier.
+ *
+ * The function should be of type int function(void). It may be conditionally
+ * compiled using #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST).
+ *
+ * Tests are executed in order by igt/i915_selftest
+ */
+selftest(sanitycheck, i915_mock_sanitycheck) /* keep first (igt selfcheck) */
+selftest(shmem, shmem_utils_mock_selftests)
+selftest(fence, i915_sw_fence_mock_selftests)
+selftest(scatterlist, scatterlist_mock_selftests)
+selftest(syncmap, i915_syncmap_mock_selftests)
+selftest(uncore, intel_uncore_mock_selftests)
+selftest(ring, intel_ring_mock_selftests)
+selftest(engine, intel_engine_cs_mock_selftests)
+selftest(timelines, intel_timeline_mock_selftests)
+selftest(requests, i915_request_mock_selftests)
+selftest(objects, i915_gem_object_mock_selftests)
+selftest(phys, i915_gem_phys_mock_selftests)
+selftest(dmabuf, i915_gem_dmabuf_mock_selftests)
+selftest(vma, i915_vma_mock_selftests)
+selftest(evict, i915_gem_evict_mock_selftests)
+selftest(gtt, i915_gem_gtt_mock_selftests)
+selftest(hugepages, i915_gem_huge_page_mock_selftests)
+selftest(memory_region, intel_memory_region_mock_selftests)
diff --git a/drivers/gpu/drm/i915/selftests/i915_perf.c b/drivers/gpu/drm/i915/selftests/i915_perf.c
new file mode 100644
index 0000000000..403134a7ac
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_perf.c
@@ -0,0 +1,445 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <linux/kref.h>
+
+#include "gem/i915_gem_pm.h"
+#include "gt/intel_gt.h"
+
+#include "i915_selftest.h"
+
+#include "igt_flush_test.h"
+#include "lib_sw_fence.h"
+
+#define TEST_OA_CONFIG_UUID "12345678-1234-1234-1234-1234567890ab"
+
+static int
+alloc_empty_config(struct i915_perf *perf)
+{
+	struct i915_oa_config *oa_config;
+
+	oa_config = kzalloc(sizeof(*oa_config), GFP_KERNEL);
+	if (!oa_config)
+		return -ENOMEM;
+
+	oa_config->perf = perf;
+	kref_init(&oa_config->ref);
+
+	strscpy(oa_config->uuid, TEST_OA_CONFIG_UUID, sizeof(oa_config->uuid));
+
+	mutex_lock(&perf->metrics_lock);
+
+	oa_config->id = idr_alloc(&perf->metrics_idr, oa_config, 2, 0, GFP_KERNEL);
+	if (oa_config->id < 0)  {
+		mutex_unlock(&perf->metrics_lock);
+		i915_oa_config_put(oa_config);
+		return -ENOMEM;
+	}
+
+	mutex_unlock(&perf->metrics_lock);
+
+	return 0;
+}
+
+static void
+destroy_empty_config(struct i915_perf *perf)
+{
+	struct i915_oa_config *oa_config = NULL, *tmp;
+	int id;
+
+	mutex_lock(&perf->metrics_lock);
+
+	idr_for_each_entry(&perf->metrics_idr, tmp, id) {
+		if (!strcmp(tmp->uuid, TEST_OA_CONFIG_UUID)) {
+			oa_config = tmp;
+			break;
+		}
+	}
+
+	if (oa_config)
+		idr_remove(&perf->metrics_idr, oa_config->id);
+
+	mutex_unlock(&perf->metrics_lock);
+
+	if (oa_config)
+		i915_oa_config_put(oa_config);
+}
+
+static struct i915_oa_config *
+get_empty_config(struct i915_perf *perf)
+{
+	struct i915_oa_config *oa_config = NULL, *tmp;
+	int id;
+
+	mutex_lock(&perf->metrics_lock);
+
+	idr_for_each_entry(&perf->metrics_idr, tmp, id) {
+		if (!strcmp(tmp->uuid, TEST_OA_CONFIG_UUID)) {
+			oa_config = i915_oa_config_get(tmp);
+			break;
+		}
+	}
+
+	mutex_unlock(&perf->metrics_lock);
+
+	return oa_config;
+}
+
+static struct i915_perf_stream *
+test_stream(struct i915_perf *perf)
+{
+	struct drm_i915_perf_open_param param = {};
+	struct i915_oa_config *oa_config = get_empty_config(perf);
+	struct perf_open_properties props = {
+		.engine = intel_engine_lookup_user(perf->i915,
+						   I915_ENGINE_CLASS_RENDER,
+						   0),
+		.sample_flags = SAMPLE_OA_REPORT,
+		.oa_format = GRAPHICS_VER(perf->i915) == 12 ?
+		I915_OA_FORMAT_A32u40_A4u32_B8_C8 : I915_OA_FORMAT_C4_B8,
+	};
+	struct i915_perf_stream *stream;
+	struct intel_gt *gt;
+
+	if (!props.engine)
+		return NULL;
+
+	gt = props.engine->gt;
+
+	if (!oa_config)
+		return NULL;
+
+	props.metrics_set = oa_config->id;
+
+	stream = kzalloc(sizeof(*stream), GFP_KERNEL);
+	if (!stream) {
+		i915_oa_config_put(oa_config);
+		return NULL;
+	}
+
+	stream->perf = perf;
+
+	mutex_lock(&gt->perf.lock);
+	if (i915_oa_stream_init(stream, &param, &props)) {
+		kfree(stream);
+		stream =  NULL;
+	}
+	mutex_unlock(&gt->perf.lock);
+
+	i915_oa_config_put(oa_config);
+
+	return stream;
+}
+
+static void stream_destroy(struct i915_perf_stream *stream)
+{
+	struct intel_gt *gt = stream->engine->gt;
+
+	mutex_lock(&gt->perf.lock);
+	i915_perf_destroy_locked(stream);
+	mutex_unlock(&gt->perf.lock);
+}
+
+static int live_sanitycheck(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct i915_perf_stream *stream;
+
+	/* Quick check we can create a perf stream */
+
+	stream = test_stream(&i915->perf);
+	if (!stream)
+		return -EINVAL;
+
+	stream_destroy(stream);
+	return 0;
+}
+
+static int write_timestamp(struct i915_request *rq, int slot)
+{
+	u32 *cs;
+	int len;
+
+	cs = intel_ring_begin(rq, 6);
+	if (IS_ERR(cs))
+		return PTR_ERR(cs);
+
+	len = 5;
+	if (GRAPHICS_VER(rq->i915) >= 8)
+		len++;
+
+	*cs++ = GFX_OP_PIPE_CONTROL(len);
+	*cs++ = PIPE_CONTROL_GLOBAL_GTT_IVB |
+		PIPE_CONTROL_STORE_DATA_INDEX |
+		PIPE_CONTROL_WRITE_TIMESTAMP;
+	*cs++ = slot * sizeof(u32);
+	*cs++ = 0;
+	*cs++ = 0;
+	*cs++ = 0;
+
+	intel_ring_advance(rq, cs);
+
+	return 0;
+}
+
+static ktime_t poll_status(struct i915_request *rq, int slot)
+{
+	while (!intel_read_status_page(rq->engine, slot) &&
+	       !i915_request_completed(rq))
+		cpu_relax();
+
+	return ktime_get();
+}
+
+static int live_noa_delay(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct i915_perf_stream *stream;
+	struct i915_request *rq;
+	ktime_t t0, t1;
+	u64 expected;
+	u32 delay;
+	int err;
+	int i;
+
+	/* Check that the GPU delays matches expectations */
+
+	stream = test_stream(&i915->perf);
+	if (!stream)
+		return -ENOMEM;
+
+	expected = atomic64_read(&stream->perf->noa_programming_delay);
+
+	if (stream->engine->class != RENDER_CLASS) {
+		err = -ENODEV;
+		goto out;
+	}
+
+	for (i = 0; i < 4; i++)
+		intel_write_status_page(stream->engine, 0x100 + i, 0);
+
+	rq = intel_engine_create_kernel_request(stream->engine);
+	if (IS_ERR(rq)) {
+		err = PTR_ERR(rq);
+		goto out;
+	}
+
+	if (rq->engine->emit_init_breadcrumb) {
+		err = rq->engine->emit_init_breadcrumb(rq);
+		if (err) {
+			i915_request_add(rq);
+			goto out;
+		}
+	}
+
+	err = write_timestamp(rq, 0x100);
+	if (err) {
+		i915_request_add(rq);
+		goto out;
+	}
+
+	err = rq->engine->emit_bb_start(rq,
+					i915_ggtt_offset(stream->noa_wait), 0,
+					I915_DISPATCH_SECURE);
+	if (err) {
+		i915_request_add(rq);
+		goto out;
+	}
+
+	err = write_timestamp(rq, 0x102);
+	if (err) {
+		i915_request_add(rq);
+		goto out;
+	}
+
+	i915_request_get(rq);
+	i915_request_add(rq);
+
+	preempt_disable();
+	t0 = poll_status(rq, 0x100);
+	t1 = poll_status(rq, 0x102);
+	preempt_enable();
+
+	pr_info("CPU delay: %lluns, expected %lluns\n",
+		ktime_sub(t1, t0), expected);
+
+	delay = intel_read_status_page(stream->engine, 0x102);
+	delay -= intel_read_status_page(stream->engine, 0x100);
+	delay = intel_gt_clock_interval_to_ns(stream->engine->gt, delay);
+	pr_info("GPU delay: %uns, expected %lluns\n",
+		delay, expected);
+
+	if (4 * delay < 3 * expected || 2 * delay > 3 * expected) {
+		pr_err("GPU delay [%uus] outside of expected threshold! [%lluus, %lluus]\n",
+		       delay / 1000,
+		       div_u64(3 * expected, 4000),
+		       div_u64(3 * expected, 2000));
+		err = -EINVAL;
+	}
+
+	i915_request_put(rq);
+out:
+	stream_destroy(stream);
+	return err;
+}
+
+static int live_noa_gpr(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct i915_perf_stream *stream;
+	struct intel_context *ce;
+	struct i915_request *rq;
+	u32 *cs, *store;
+	void *scratch;
+	u32 gpr0;
+	int err;
+	int i;
+
+	/* Check that the delay does not clobber user context state (GPR) */
+
+	stream = test_stream(&i915->perf);
+	if (!stream)
+		return -ENOMEM;
+
+	gpr0 = i915_mmio_reg_offset(GEN8_RING_CS_GPR(stream->engine->mmio_base, 0));
+
+	ce = intel_context_create(stream->engine);
+	if (IS_ERR(ce)) {
+		err = PTR_ERR(ce);
+		goto out;
+	}
+
+	/* Poison the ce->vm so we detect writes not to the GGTT gt->scratch */
+	scratch = __px_vaddr(ce->vm->scratch[0]);
+	memset(scratch, POISON_FREE, PAGE_SIZE);
+
+	rq = intel_context_create_request(ce);
+	if (IS_ERR(rq)) {
+		err = PTR_ERR(rq);
+		goto out_ce;
+	}
+	i915_request_get(rq);
+
+	if (rq->engine->emit_init_breadcrumb) {
+		err = rq->engine->emit_init_breadcrumb(rq);
+		if (err) {
+			i915_request_add(rq);
+			goto out_rq;
+		}
+	}
+
+	/* Fill the 16 qword [32 dword] GPR with a known unlikely value */
+	cs = intel_ring_begin(rq, 2 * 32 + 2);
+	if (IS_ERR(cs)) {
+		err = PTR_ERR(cs);
+		i915_request_add(rq);
+		goto out_rq;
+	}
+
+	*cs++ = MI_LOAD_REGISTER_IMM(32);
+	for (i = 0; i < 32; i++) {
+		*cs++ = gpr0 + i * sizeof(u32);
+		*cs++ = STACK_MAGIC;
+	}
+	*cs++ = MI_NOOP;
+	intel_ring_advance(rq, cs);
+
+	/* Execute the GPU delay */
+	err = rq->engine->emit_bb_start(rq,
+					i915_ggtt_offset(stream->noa_wait), 0,
+					I915_DISPATCH_SECURE);
+	if (err) {
+		i915_request_add(rq);
+		goto out_rq;
+	}
+
+	/* Read the GPR back, using the pinned global HWSP for convenience */
+	store = memset32(rq->engine->status_page.addr + 512, 0, 32);
+	for (i = 0; i < 32; i++) {
+		u32 cmd;
+
+		cs = intel_ring_begin(rq, 4);
+		if (IS_ERR(cs)) {
+			err = PTR_ERR(cs);
+			i915_request_add(rq);
+			goto out_rq;
+		}
+
+		cmd = MI_STORE_REGISTER_MEM;
+		if (GRAPHICS_VER(i915) >= 8)
+			cmd++;
+		cmd |= MI_USE_GGTT;
+
+		*cs++ = cmd;
+		*cs++ = gpr0 + i * sizeof(u32);
+		*cs++ = i915_ggtt_offset(rq->engine->status_page.vma) +
+			offset_in_page(store) +
+			i * sizeof(u32);
+		*cs++ = 0;
+		intel_ring_advance(rq, cs);
+	}
+
+	i915_request_add(rq);
+
+	if (i915_request_wait(rq, I915_WAIT_INTERRUPTIBLE, HZ / 2) < 0) {
+		pr_err("noa_wait timed out\n");
+		intel_gt_set_wedged(stream->engine->gt);
+		err = -EIO;
+		goto out_rq;
+	}
+
+	/* Verify that the GPR contain our expected values */
+	for (i = 0; i < 32; i++) {
+		if (store[i] == STACK_MAGIC)
+			continue;
+
+		pr_err("GPR[%d] lost, found:%08x, expected:%08x!\n",
+		       i, store[i], STACK_MAGIC);
+		err = -EINVAL;
+	}
+
+	/* Verify that the user's scratch page was not used for GPR storage */
+	if (memchr_inv(scratch, POISON_FREE, PAGE_SIZE)) {
+		pr_err("Scratch page overwritten!\n");
+		igt_hexdump(scratch, 4096);
+		err = -EINVAL;
+	}
+
+out_rq:
+	i915_request_put(rq);
+out_ce:
+	intel_context_put(ce);
+out:
+	stream_destroy(stream);
+	return err;
+}
+
+int i915_perf_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(live_sanitycheck),
+		SUBTEST(live_noa_delay),
+		SUBTEST(live_noa_gpr),
+	};
+	struct i915_perf *perf = &i915->perf;
+	int err;
+
+	if (!perf->metrics_kobj || !perf->ops.enable_metric_set)
+		return 0;
+
+	if (intel_gt_is_wedged(to_gt(i915)))
+		return 0;
+
+	err = alloc_empty_config(&i915->perf);
+	if (err)
+		return err;
+
+	err = i915_live_subtests(tests, i915);
+
+	destroy_empty_config(&i915->perf);
+
+	return err;
+}
diff --git a/drivers/gpu/drm/i915/selftests/i915_perf_selftests.h b/drivers/gpu/drm/i915/selftests/i915_perf_selftests.h
new file mode 100644
index 0000000000..058450d351
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_perf_selftests.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef selftest
+#define selftest(x, y)
+#endif
+
+/*
+ * List each unit test as selftest(name, function)
+ *
+ * The name is used as both an enum and expanded as subtest__name to create
+ * a module parameter. It must be unique and legal for a C identifier.
+ *
+ * The function should be of type int function(void). It may be conditionally
+ * compiled using #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST).
+ *
+ * Tests are executed in order by igt/i915_selftest
+ */
+selftest(engine_cs, intel_engine_cs_perf_selftests)
+selftest(request, i915_request_perf_selftests)
+selftest(migrate, intel_migrate_perf_selftests)
+selftest(region, intel_memory_region_perf_selftests)
diff --git a/drivers/gpu/drm/i915/selftests/i915_random.c b/drivers/gpu/drm/i915/selftests/i915_random.c
new file mode 100644
index 0000000000..abdfadcf62
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_random.c
@@ -0,0 +1,109 @@
+/*
+ * 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 <linux/bitops.h>
+#include <linux/kernel.h>
+#include <linux/random.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include "i915_random.h"
+#include "i915_utils.h"
+
+u64 i915_prandom_u64_state(struct rnd_state *rnd)
+{
+	u64 x;
+
+	x = prandom_u32_state(rnd);
+	x <<= 32;
+	x |= prandom_u32_state(rnd);
+
+	return x;
+}
+
+void i915_prandom_shuffle(void *arr, size_t elsz, size_t count,
+			  struct rnd_state *state)
+{
+	char stack[128];
+
+	if (WARN_ON(elsz > sizeof(stack) || count > U32_MAX))
+		return;
+
+	if (!elsz || !count)
+		return;
+
+	/* Fisher-Yates shuffle courtesy of Knuth */
+	while (--count) {
+		size_t swp;
+
+		swp = i915_prandom_u32_max_state(count + 1, state);
+		if (swp == count)
+			continue;
+
+		memcpy(stack, arr + count * elsz, elsz);
+		memcpy(arr + count * elsz, arr + swp * elsz, elsz);
+		memcpy(arr + swp * elsz, stack, elsz);
+	}
+}
+
+void i915_random_reorder(unsigned int *order, unsigned int count,
+			 struct rnd_state *state)
+{
+	i915_prandom_shuffle(order, sizeof(*order), count, state);
+}
+
+unsigned int *i915_random_order(unsigned int count, struct rnd_state *state)
+{
+	unsigned int *order, i;
+
+	order = kmalloc_array(count, sizeof(*order),
+			      GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_NOWARN);
+	if (!order)
+		return order;
+
+	for (i = 0; i < count; i++)
+		order[i] = i;
+
+	i915_random_reorder(order, count, state);
+	return order;
+}
+
+u64 igt_random_offset(struct rnd_state *state,
+		      u64 start, u64 end,
+		      u64 len, u64 align)
+{
+	u64 range, addr;
+
+	BUG_ON(range_overflows(start, len, end));
+	BUG_ON(round_up(start, align) > round_down(end - len, align));
+
+	range = round_down(end - len, align) - round_up(start, align);
+	if (range) {
+		addr = i915_prandom_u64_state(state);
+		div64_u64_rem(addr, range, &addr);
+		start += addr;
+	}
+
+	return round_up(start, align);
+}
diff --git a/drivers/gpu/drm/i915/selftests/i915_random.h b/drivers/gpu/drm/i915/selftests/i915_random.h
new file mode 100644
index 0000000000..05364eca20
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_random.h
@@ -0,0 +1,65 @@
+/*
+ * 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.
+ *
+ */
+
+#ifndef __I915_SELFTESTS_RANDOM_H__
+#define __I915_SELFTESTS_RANDOM_H__
+
+#include <linux/math64.h>
+#include <linux/random.h>
+
+#include "../i915_selftest.h"
+
+#define I915_RND_STATE_INITIALIZER(x) ({				\
+	struct rnd_state state__;					\
+	prandom_seed_state(&state__, (x));				\
+	state__;							\
+})
+
+#define I915_RND_STATE(name__) \
+	struct rnd_state name__ = I915_RND_STATE_INITIALIZER(i915_selftest.random_seed)
+
+#define I915_RND_SUBSTATE(name__, parent__) \
+	struct rnd_state name__ = I915_RND_STATE_INITIALIZER(prandom_u32_state(&(parent__)))
+
+u64 i915_prandom_u64_state(struct rnd_state *rnd);
+
+static inline u32 i915_prandom_u32_max_state(u32 ep_ro, struct rnd_state *state)
+{
+	return upper_32_bits(mul_u32_u32(prandom_u32_state(state), ep_ro));
+}
+
+unsigned int *i915_random_order(unsigned int count,
+				struct rnd_state *state);
+void i915_random_reorder(unsigned int *order,
+			 unsigned int count,
+			 struct rnd_state *state);
+
+void i915_prandom_shuffle(void *arr, size_t elsz, size_t count,
+			  struct rnd_state *state);
+
+u64 igt_random_offset(struct rnd_state *state,
+		      u64 start, u64 end,
+		      u64 len, u64 align);
+
+#endif /* !__I915_SELFTESTS_RANDOM_H__ */
diff --git a/drivers/gpu/drm/i915/selftests/i915_request.c b/drivers/gpu/drm/i915/selftests/i915_request.c
new file mode 100644
index 0000000000..a9b79888c1
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_request.c
@@ -0,0 +1,3304 @@
+/*
+ * 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 <linux/prime_numbers.h>
+#include <linux/pm_qos.h>
+#include <linux/sort.h>
+
+#include "gem/i915_gem_internal.h"
+#include "gem/i915_gem_pm.h"
+#include "gem/selftests/mock_context.h"
+
+#include "gt/intel_engine_heartbeat.h"
+#include "gt/intel_engine_pm.h"
+#include "gt/intel_engine_user.h"
+#include "gt/intel_gt.h"
+#include "gt/intel_gt_clock_utils.h"
+#include "gt/intel_gt_requests.h"
+#include "gt/selftest_engine_heartbeat.h"
+
+#include "i915_random.h"
+#include "i915_selftest.h"
+#include "igt_flush_test.h"
+#include "igt_live_test.h"
+#include "igt_spinner.h"
+#include "lib_sw_fence.h"
+
+#include "mock_drm.h"
+#include "mock_gem_device.h"
+
+static unsigned int num_uabi_engines(struct drm_i915_private *i915)
+{
+	struct intel_engine_cs *engine;
+	unsigned int count;
+
+	count = 0;
+	for_each_uabi_engine(engine, i915)
+		count++;
+
+	return count;
+}
+
+static struct intel_engine_cs *rcs0(struct drm_i915_private *i915)
+{
+	return intel_engine_lookup_user(i915, I915_ENGINE_CLASS_RENDER, 0);
+}
+
+static int igt_add_request(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct i915_request *request;
+
+	/* Basic preliminary test to create a request and let it loose! */
+
+	request = mock_request(rcs0(i915)->kernel_context, HZ / 10);
+	if (!request)
+		return -ENOMEM;
+
+	i915_request_add(request);
+
+	return 0;
+}
+
+static int igt_wait_request(void *arg)
+{
+	const long T = HZ / 4;
+	struct drm_i915_private *i915 = arg;
+	struct i915_request *request;
+	int err = -EINVAL;
+
+	/* Submit a request, then wait upon it */
+
+	request = mock_request(rcs0(i915)->kernel_context, T);
+	if (!request)
+		return -ENOMEM;
+
+	i915_request_get(request);
+
+	if (i915_request_wait(request, 0, 0) != -ETIME) {
+		pr_err("request wait (busy query) succeeded (expected timeout before submit!)\n");
+		goto out_request;
+	}
+
+	if (i915_request_wait(request, 0, T) != -ETIME) {
+		pr_err("request wait succeeded (expected timeout before submit!)\n");
+		goto out_request;
+	}
+
+	if (i915_request_completed(request)) {
+		pr_err("request completed before submit!!\n");
+		goto out_request;
+	}
+
+	i915_request_add(request);
+
+	if (i915_request_wait(request, 0, 0) != -ETIME) {
+		pr_err("request wait (busy query) succeeded (expected timeout after submit!)\n");
+		goto out_request;
+	}
+
+	if (i915_request_completed(request)) {
+		pr_err("request completed immediately!\n");
+		goto out_request;
+	}
+
+	if (i915_request_wait(request, 0, T / 2) != -ETIME) {
+		pr_err("request wait succeeded (expected timeout!)\n");
+		goto out_request;
+	}
+
+	if (i915_request_wait(request, 0, T) == -ETIME) {
+		pr_err("request wait timed out!\n");
+		goto out_request;
+	}
+
+	if (!i915_request_completed(request)) {
+		pr_err("request not complete after waiting!\n");
+		goto out_request;
+	}
+
+	if (i915_request_wait(request, 0, T) == -ETIME) {
+		pr_err("request wait timed out when already complete!\n");
+		goto out_request;
+	}
+
+	err = 0;
+out_request:
+	i915_request_put(request);
+	mock_device_flush(i915);
+	return err;
+}
+
+static int igt_fence_wait(void *arg)
+{
+	const long T = HZ / 4;
+	struct drm_i915_private *i915 = arg;
+	struct i915_request *request;
+	int err = -EINVAL;
+
+	/* Submit a request, treat it as a fence and wait upon it */
+
+	request = mock_request(rcs0(i915)->kernel_context, T);
+	if (!request)
+		return -ENOMEM;
+
+	if (dma_fence_wait_timeout(&request->fence, false, T) != -ETIME) {
+		pr_err("fence wait success before submit (expected timeout)!\n");
+		goto out;
+	}
+
+	i915_request_add(request);
+
+	if (dma_fence_is_signaled(&request->fence)) {
+		pr_err("fence signaled immediately!\n");
+		goto out;
+	}
+
+	if (dma_fence_wait_timeout(&request->fence, false, T / 2) != -ETIME) {
+		pr_err("fence wait success after submit (expected timeout)!\n");
+		goto out;
+	}
+
+	if (dma_fence_wait_timeout(&request->fence, false, T) <= 0) {
+		pr_err("fence wait timed out (expected success)!\n");
+		goto out;
+	}
+
+	if (!dma_fence_is_signaled(&request->fence)) {
+		pr_err("fence unsignaled after waiting!\n");
+		goto out;
+	}
+
+	if (dma_fence_wait_timeout(&request->fence, false, T) <= 0) {
+		pr_err("fence wait timed out when complete (expected success)!\n");
+		goto out;
+	}
+
+	err = 0;
+out:
+	mock_device_flush(i915);
+	return err;
+}
+
+static int igt_request_rewind(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct i915_request *request, *vip;
+	struct i915_gem_context *ctx[2];
+	struct intel_context *ce;
+	int err = -EINVAL;
+
+	ctx[0] = mock_context(i915, "A");
+	if (!ctx[0]) {
+		err = -ENOMEM;
+		goto err_ctx_0;
+	}
+
+	ce = i915_gem_context_get_engine(ctx[0], RCS0);
+	GEM_BUG_ON(IS_ERR(ce));
+	request = mock_request(ce, 2 * HZ);
+	intel_context_put(ce);
+	if (!request) {
+		err = -ENOMEM;
+		goto err_context_0;
+	}
+
+	i915_request_get(request);
+	i915_request_add(request);
+
+	ctx[1] = mock_context(i915, "B");
+	if (!ctx[1]) {
+		err = -ENOMEM;
+		goto err_ctx_1;
+	}
+
+	ce = i915_gem_context_get_engine(ctx[1], RCS0);
+	GEM_BUG_ON(IS_ERR(ce));
+	vip = mock_request(ce, 0);
+	intel_context_put(ce);
+	if (!vip) {
+		err = -ENOMEM;
+		goto err_context_1;
+	}
+
+	/* Simulate preemption by manual reordering */
+	if (!mock_cancel_request(request)) {
+		pr_err("failed to cancel request (already executed)!\n");
+		i915_request_add(vip);
+		goto err_context_1;
+	}
+	i915_request_get(vip);
+	i915_request_add(vip);
+	rcu_read_lock();
+	request->engine->submit_request(request);
+	rcu_read_unlock();
+
+
+	if (i915_request_wait(vip, 0, HZ) == -ETIME) {
+		pr_err("timed out waiting for high priority request\n");
+		goto err;
+	}
+
+	if (i915_request_completed(request)) {
+		pr_err("low priority request already completed\n");
+		goto err;
+	}
+
+	err = 0;
+err:
+	i915_request_put(vip);
+err_context_1:
+	mock_context_close(ctx[1]);
+err_ctx_1:
+	i915_request_put(request);
+err_context_0:
+	mock_context_close(ctx[0]);
+err_ctx_0:
+	mock_device_flush(i915);
+	return err;
+}
+
+struct smoketest {
+	struct intel_engine_cs *engine;
+	struct i915_gem_context **contexts;
+	atomic_long_t num_waits, num_fences;
+	int ncontexts, max_batch;
+	struct i915_request *(*request_alloc)(struct intel_context *ce);
+};
+
+static struct i915_request *
+__mock_request_alloc(struct intel_context *ce)
+{
+	return mock_request(ce, 0);
+}
+
+static struct i915_request *
+__live_request_alloc(struct intel_context *ce)
+{
+	return intel_context_create_request(ce);
+}
+
+struct smoke_thread {
+	struct kthread_worker *worker;
+	struct kthread_work work;
+	struct smoketest *t;
+	bool stop;
+	int result;
+};
+
+static void __igt_breadcrumbs_smoketest(struct kthread_work *work)
+{
+	struct smoke_thread *thread = container_of(work, typeof(*thread), work);
+	struct smoketest *t = thread->t;
+	const unsigned int max_batch = min(t->ncontexts, t->max_batch) - 1;
+	const unsigned int total = 4 * t->ncontexts + 1;
+	unsigned int num_waits = 0, num_fences = 0;
+	struct i915_request **requests;
+	I915_RND_STATE(prng);
+	unsigned int *order;
+	int err = 0;
+
+	/*
+	 * A very simple test to catch the most egregious of list handling bugs.
+	 *
+	 * At its heart, we simply create oodles of requests running across
+	 * multiple kthreads and enable signaling on them, for the sole purpose
+	 * of stressing our breadcrumb handling. The only inspection we do is
+	 * that the fences were marked as signaled.
+	 */
+
+	requests = kcalloc(total, sizeof(*requests), GFP_KERNEL);
+	if (!requests) {
+		thread->result = -ENOMEM;
+		return;
+	}
+
+	order = i915_random_order(total, &prng);
+	if (!order) {
+		err = -ENOMEM;
+		goto out_requests;
+	}
+
+	while (!READ_ONCE(thread->stop)) {
+		struct i915_sw_fence *submit, *wait;
+		unsigned int n, count;
+
+		submit = heap_fence_create(GFP_KERNEL);
+		if (!submit) {
+			err = -ENOMEM;
+			break;
+		}
+
+		wait = heap_fence_create(GFP_KERNEL);
+		if (!wait) {
+			i915_sw_fence_commit(submit);
+			heap_fence_put(submit);
+			err = -ENOMEM;
+			break;
+		}
+
+		i915_random_reorder(order, total, &prng);
+		count = 1 + i915_prandom_u32_max_state(max_batch, &prng);
+
+		for (n = 0; n < count; n++) {
+			struct i915_gem_context *ctx =
+				t->contexts[order[n] % t->ncontexts];
+			struct i915_request *rq;
+			struct intel_context *ce;
+
+			ce = i915_gem_context_get_engine(ctx, t->engine->legacy_idx);
+			GEM_BUG_ON(IS_ERR(ce));
+			rq = t->request_alloc(ce);
+			intel_context_put(ce);
+			if (IS_ERR(rq)) {
+				err = PTR_ERR(rq);
+				count = n;
+				break;
+			}
+
+			err = i915_sw_fence_await_sw_fence_gfp(&rq->submit,
+							       submit,
+							       GFP_KERNEL);
+
+			requests[n] = i915_request_get(rq);
+			i915_request_add(rq);
+
+			if (err >= 0)
+				err = i915_sw_fence_await_dma_fence(wait,
+								    &rq->fence,
+								    0,
+								    GFP_KERNEL);
+
+			if (err < 0) {
+				i915_request_put(rq);
+				count = n;
+				break;
+			}
+		}
+
+		i915_sw_fence_commit(submit);
+		i915_sw_fence_commit(wait);
+
+		if (!wait_event_timeout(wait->wait,
+					i915_sw_fence_done(wait),
+					5 * HZ)) {
+			struct i915_request *rq = requests[count - 1];
+
+			pr_err("waiting for %d/%d fences (last %llx:%lld) on %s timed out!\n",
+			       atomic_read(&wait->pending), count,
+			       rq->fence.context, rq->fence.seqno,
+			       t->engine->name);
+			GEM_TRACE_DUMP();
+
+			intel_gt_set_wedged(t->engine->gt);
+			GEM_BUG_ON(!i915_request_completed(rq));
+			i915_sw_fence_wait(wait);
+			err = -EIO;
+		}
+
+		for (n = 0; n < count; n++) {
+			struct i915_request *rq = requests[n];
+
+			if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
+				      &rq->fence.flags)) {
+				pr_err("%llu:%llu was not signaled!\n",
+				       rq->fence.context, rq->fence.seqno);
+				err = -EINVAL;
+			}
+
+			i915_request_put(rq);
+		}
+
+		heap_fence_put(wait);
+		heap_fence_put(submit);
+
+		if (err < 0)
+			break;
+
+		num_fences += count;
+		num_waits++;
+
+		cond_resched();
+	}
+
+	atomic_long_add(num_fences, &t->num_fences);
+	atomic_long_add(num_waits, &t->num_waits);
+
+	kfree(order);
+out_requests:
+	kfree(requests);
+	thread->result = err;
+}
+
+static int mock_breadcrumbs_smoketest(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct smoketest t = {
+		.engine = rcs0(i915),
+		.ncontexts = 1024,
+		.max_batch = 1024,
+		.request_alloc = __mock_request_alloc
+	};
+	unsigned int ncpus = num_online_cpus();
+	struct smoke_thread *threads;
+	unsigned int n;
+	int ret = 0;
+
+	/*
+	 * Smoketest our breadcrumb/signal handling for requests across multiple
+	 * threads. A very simple test to only catch the most egregious of bugs.
+	 * See __igt_breadcrumbs_smoketest();
+	 */
+
+	threads = kcalloc(ncpus, sizeof(*threads), GFP_KERNEL);
+	if (!threads)
+		return -ENOMEM;
+
+	t.contexts = kcalloc(t.ncontexts, sizeof(*t.contexts), GFP_KERNEL);
+	if (!t.contexts) {
+		ret = -ENOMEM;
+		goto out_threads;
+	}
+
+	for (n = 0; n < t.ncontexts; n++) {
+		t.contexts[n] = mock_context(t.engine->i915, "mock");
+		if (!t.contexts[n]) {
+			ret = -ENOMEM;
+			goto out_contexts;
+		}
+	}
+
+	for (n = 0; n < ncpus; n++) {
+		struct kthread_worker *worker;
+
+		worker = kthread_create_worker(0, "igt/%d", n);
+		if (IS_ERR(worker)) {
+			ret = PTR_ERR(worker);
+			ncpus = n;
+			break;
+		}
+
+		threads[n].worker = worker;
+		threads[n].t = &t;
+		threads[n].stop = false;
+		threads[n].result = 0;
+
+		kthread_init_work(&threads[n].work,
+				  __igt_breadcrumbs_smoketest);
+		kthread_queue_work(worker, &threads[n].work);
+	}
+
+	msleep(jiffies_to_msecs(i915_selftest.timeout_jiffies));
+
+	for (n = 0; n < ncpus; n++) {
+		int err;
+
+		WRITE_ONCE(threads[n].stop, true);
+		kthread_flush_work(&threads[n].work);
+		err = READ_ONCE(threads[n].result);
+		if (err < 0 && !ret)
+			ret = err;
+
+		kthread_destroy_worker(threads[n].worker);
+	}
+	pr_info("Completed %lu waits for %lu fence across %d cpus\n",
+		atomic_long_read(&t.num_waits),
+		atomic_long_read(&t.num_fences),
+		ncpus);
+
+out_contexts:
+	for (n = 0; n < t.ncontexts; n++) {
+		if (!t.contexts[n])
+			break;
+		mock_context_close(t.contexts[n]);
+	}
+	kfree(t.contexts);
+out_threads:
+	kfree(threads);
+	return ret;
+}
+
+int i915_request_mock_selftests(void)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_add_request),
+		SUBTEST(igt_wait_request),
+		SUBTEST(igt_fence_wait),
+		SUBTEST(igt_request_rewind),
+		SUBTEST(mock_breadcrumbs_smoketest),
+	};
+	struct drm_i915_private *i915;
+	intel_wakeref_t wakeref;
+	int err = 0;
+
+	i915 = mock_gem_device();
+	if (!i915)
+		return -ENOMEM;
+
+	with_intel_runtime_pm(&i915->runtime_pm, wakeref)
+		err = i915_subtests(tests, i915);
+
+	mock_destroy_device(i915);
+
+	return err;
+}
+
+static int live_nop_request(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_engine_cs *engine;
+	struct igt_live_test t;
+	int err = -ENODEV;
+
+	/*
+	 * Submit various sized batches of empty requests, to each engine
+	 * (individually), and wait for the batch to complete. We can check
+	 * the overhead of submitting requests to the hardware.
+	 */
+
+	for_each_uabi_engine(engine, i915) {
+		unsigned long n, prime;
+		IGT_TIMEOUT(end_time);
+		ktime_t times[2] = {};
+
+		err = igt_live_test_begin(&t, i915, __func__, engine->name);
+		if (err)
+			return err;
+
+		intel_engine_pm_get(engine);
+		for_each_prime_number_from(prime, 1, 8192) {
+			struct i915_request *request = NULL;
+
+			times[1] = ktime_get_raw();
+
+			for (n = 0; n < prime; n++) {
+				i915_request_put(request);
+				request = i915_request_create(engine->kernel_context);
+				if (IS_ERR(request))
+					return PTR_ERR(request);
+
+				/*
+				 * This space is left intentionally blank.
+				 *
+				 * We do not actually want to perform any
+				 * action with this request, we just want
+				 * to measure the latency in allocation
+				 * and submission of our breadcrumbs -
+				 * ensuring that the bare request is sufficient
+				 * for the system to work (i.e. proper HEAD
+				 * tracking of the rings, interrupt handling,
+				 * etc). It also gives us the lowest bounds
+				 * for latency.
+				 */
+
+				i915_request_get(request);
+				i915_request_add(request);
+			}
+			i915_request_wait(request, 0, MAX_SCHEDULE_TIMEOUT);
+			i915_request_put(request);
+
+			times[1] = ktime_sub(ktime_get_raw(), times[1]);
+			if (prime == 1)
+				times[0] = times[1];
+
+			if (__igt_timeout(end_time, NULL))
+				break;
+		}
+		intel_engine_pm_put(engine);
+
+		err = igt_live_test_end(&t);
+		if (err)
+			return err;
+
+		pr_info("Request latencies on %s: 1 = %lluns, %lu = %lluns\n",
+			engine->name,
+			ktime_to_ns(times[0]),
+			prime, div64_u64(ktime_to_ns(times[1]), prime));
+	}
+
+	return err;
+}
+
+static int __cancel_inactive(struct intel_engine_cs *engine)
+{
+	struct intel_context *ce;
+	struct igt_spinner spin;
+	struct i915_request *rq;
+	int err = 0;
+
+	if (igt_spinner_init(&spin, engine->gt))
+		return -ENOMEM;
+
+	ce = intel_context_create(engine);
+	if (IS_ERR(ce)) {
+		err = PTR_ERR(ce);
+		goto out_spin;
+	}
+
+	rq = igt_spinner_create_request(&spin, ce, MI_ARB_CHECK);
+	if (IS_ERR(rq)) {
+		err = PTR_ERR(rq);
+		goto out_ce;
+	}
+
+	pr_debug("%s: Cancelling inactive request\n", engine->name);
+	i915_request_cancel(rq, -EINTR);
+	i915_request_get(rq);
+	i915_request_add(rq);
+
+	if (i915_request_wait(rq, 0, HZ / 5) < 0) {
+		struct drm_printer p = drm_info_printer(engine->i915->drm.dev);
+
+		pr_err("%s: Failed to cancel inactive request\n", engine->name);
+		intel_engine_dump(engine, &p, "%s\n", engine->name);
+		err = -ETIME;
+		goto out_rq;
+	}
+
+	if (rq->fence.error != -EINTR) {
+		pr_err("%s: fence not cancelled (%u)\n",
+		       engine->name, rq->fence.error);
+		err = -EINVAL;
+	}
+
+out_rq:
+	i915_request_put(rq);
+out_ce:
+	intel_context_put(ce);
+out_spin:
+	igt_spinner_fini(&spin);
+	if (err)
+		pr_err("%s: %s error %d\n", __func__, engine->name, err);
+	return err;
+}
+
+static int __cancel_active(struct intel_engine_cs *engine)
+{
+	struct intel_context *ce;
+	struct igt_spinner spin;
+	struct i915_request *rq;
+	int err = 0;
+
+	if (igt_spinner_init(&spin, engine->gt))
+		return -ENOMEM;
+
+	ce = intel_context_create(engine);
+	if (IS_ERR(ce)) {
+		err = PTR_ERR(ce);
+		goto out_spin;
+	}
+
+	rq = igt_spinner_create_request(&spin, ce, MI_ARB_CHECK);
+	if (IS_ERR(rq)) {
+		err = PTR_ERR(rq);
+		goto out_ce;
+	}
+
+	pr_debug("%s: Cancelling active request\n", engine->name);
+	i915_request_get(rq);
+	i915_request_add(rq);
+	if (!igt_wait_for_spinner(&spin, rq)) {
+		struct drm_printer p = drm_info_printer(engine->i915->drm.dev);
+
+		pr_err("Failed to start spinner on %s\n", engine->name);
+		intel_engine_dump(engine, &p, "%s\n", engine->name);
+		err = -ETIME;
+		goto out_rq;
+	}
+	i915_request_cancel(rq, -EINTR);
+
+	if (i915_request_wait(rq, 0, HZ / 5) < 0) {
+		struct drm_printer p = drm_info_printer(engine->i915->drm.dev);
+
+		pr_err("%s: Failed to cancel active request\n", engine->name);
+		intel_engine_dump(engine, &p, "%s\n", engine->name);
+		err = -ETIME;
+		goto out_rq;
+	}
+
+	if (rq->fence.error != -EINTR) {
+		pr_err("%s: fence not cancelled (%u)\n",
+		       engine->name, rq->fence.error);
+		err = -EINVAL;
+	}
+
+out_rq:
+	i915_request_put(rq);
+out_ce:
+	intel_context_put(ce);
+out_spin:
+	igt_spinner_fini(&spin);
+	if (err)
+		pr_err("%s: %s error %d\n", __func__, engine->name, err);
+	return err;
+}
+
+static int __cancel_completed(struct intel_engine_cs *engine)
+{
+	struct intel_context *ce;
+	struct igt_spinner spin;
+	struct i915_request *rq;
+	int err = 0;
+
+	if (igt_spinner_init(&spin, engine->gt))
+		return -ENOMEM;
+
+	ce = intel_context_create(engine);
+	if (IS_ERR(ce)) {
+		err = PTR_ERR(ce);
+		goto out_spin;
+	}
+
+	rq = igt_spinner_create_request(&spin, ce, MI_ARB_CHECK);
+	if (IS_ERR(rq)) {
+		err = PTR_ERR(rq);
+		goto out_ce;
+	}
+	igt_spinner_end(&spin);
+	i915_request_get(rq);
+	i915_request_add(rq);
+
+	if (i915_request_wait(rq, 0, HZ / 5) < 0) {
+		err = -ETIME;
+		goto out_rq;
+	}
+
+	pr_debug("%s: Cancelling completed request\n", engine->name);
+	i915_request_cancel(rq, -EINTR);
+	if (rq->fence.error) {
+		pr_err("%s: fence not cancelled (%u)\n",
+		       engine->name, rq->fence.error);
+		err = -EINVAL;
+	}
+
+out_rq:
+	i915_request_put(rq);
+out_ce:
+	intel_context_put(ce);
+out_spin:
+	igt_spinner_fini(&spin);
+	if (err)
+		pr_err("%s: %s error %d\n", __func__, engine->name, err);
+	return err;
+}
+
+/*
+ * Test to prove a non-preemptable request can be cancelled and a subsequent
+ * request on the same context can successfully complete after cancellation.
+ *
+ * Testing methodology is to create a non-preemptible request and submit it,
+ * wait for spinner to start, create a NOP request and submit it, cancel the
+ * spinner, wait for spinner to complete and verify it failed with an error,
+ * finally wait for NOP request to complete verify it succeeded without an
+ * error. Preemption timeout also reduced / restored so test runs in a timely
+ * maner.
+ */
+static int __cancel_reset(struct drm_i915_private *i915,
+			  struct intel_engine_cs *engine)
+{
+	struct intel_context *ce;
+	struct igt_spinner spin;
+	struct i915_request *rq, *nop;
+	unsigned long preempt_timeout_ms;
+	int err = 0;
+
+	if (!CONFIG_DRM_I915_PREEMPT_TIMEOUT ||
+	    !intel_has_reset_engine(engine->gt))
+		return 0;
+
+	preempt_timeout_ms = engine->props.preempt_timeout_ms;
+	engine->props.preempt_timeout_ms = 100;
+
+	if (igt_spinner_init(&spin, engine->gt))
+		goto out_restore;
+
+	ce = intel_context_create(engine);
+	if (IS_ERR(ce)) {
+		err = PTR_ERR(ce);
+		goto out_spin;
+	}
+
+	rq = igt_spinner_create_request(&spin, ce, MI_NOOP);
+	if (IS_ERR(rq)) {
+		err = PTR_ERR(rq);
+		goto out_ce;
+	}
+
+	pr_debug("%s: Cancelling active non-preemptable request\n",
+		 engine->name);
+	i915_request_get(rq);
+	i915_request_add(rq);
+	if (!igt_wait_for_spinner(&spin, rq)) {
+		struct drm_printer p = drm_info_printer(engine->i915->drm.dev);
+
+		pr_err("Failed to start spinner on %s\n", engine->name);
+		intel_engine_dump(engine, &p, "%s\n", engine->name);
+		err = -ETIME;
+		goto out_rq;
+	}
+
+	nop = intel_context_create_request(ce);
+	if (IS_ERR(nop))
+		goto out_rq;
+	i915_request_get(nop);
+	i915_request_add(nop);
+
+	i915_request_cancel(rq, -EINTR);
+
+	if (i915_request_wait(rq, 0, HZ) < 0) {
+		struct drm_printer p = drm_info_printer(engine->i915->drm.dev);
+
+		pr_err("%s: Failed to cancel hung request\n", engine->name);
+		intel_engine_dump(engine, &p, "%s\n", engine->name);
+		err = -ETIME;
+		goto out_nop;
+	}
+
+	if (rq->fence.error != -EINTR) {
+		pr_err("%s: fence not cancelled (%u)\n",
+		       engine->name, rq->fence.error);
+		err = -EINVAL;
+		goto out_nop;
+	}
+
+	if (i915_request_wait(nop, 0, HZ) < 0) {
+		struct drm_printer p = drm_info_printer(engine->i915->drm.dev);
+
+		pr_err("%s: Failed to complete nop request\n", engine->name);
+		intel_engine_dump(engine, &p, "%s\n", engine->name);
+		err = -ETIME;
+		goto out_nop;
+	}
+
+	if (nop->fence.error != 0) {
+		pr_err("%s: Nop request errored (%u)\n",
+		       engine->name, nop->fence.error);
+		err = -EINVAL;
+	}
+
+out_nop:
+	i915_request_put(nop);
+out_rq:
+	i915_request_put(rq);
+out_ce:
+	intel_context_put(ce);
+out_spin:
+	igt_spinner_fini(&spin);
+out_restore:
+	engine->props.preempt_timeout_ms = preempt_timeout_ms;
+	if (err)
+		pr_err("%s: %s error %d\n", __func__, engine->name, err);
+	return err;
+}
+
+static int live_cancel_request(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_engine_cs *engine;
+
+	/*
+	 * Check cancellation of requests. We expect to be able to immediately
+	 * cancel active requests, even if they are currently on the GPU.
+	 */
+
+	for_each_uabi_engine(engine, i915) {
+		struct igt_live_test t;
+		int err, err2;
+
+		if (!intel_engine_has_preemption(engine))
+			continue;
+
+		err = igt_live_test_begin(&t, i915, __func__, engine->name);
+		if (err)
+			return err;
+
+		err = __cancel_inactive(engine);
+		if (err == 0)
+			err = __cancel_active(engine);
+		if (err == 0)
+			err = __cancel_completed(engine);
+
+		err2 = igt_live_test_end(&t);
+		if (err)
+			return err;
+		if (err2)
+			return err2;
+
+		/* Expects reset so call outside of igt_live_test_* */
+		err = __cancel_reset(i915, engine);
+		if (err)
+			return err;
+
+		if (igt_flush_test(i915))
+			return -EIO;
+	}
+
+	return 0;
+}
+
+static struct i915_vma *empty_batch(struct intel_gt *gt)
+{
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+	u32 *cmd;
+	int err;
+
+	obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
+	if (IS_ERR(obj))
+		return ERR_CAST(obj);
+
+	cmd = i915_gem_object_pin_map_unlocked(obj, I915_MAP_WC);
+	if (IS_ERR(cmd)) {
+		err = PTR_ERR(cmd);
+		goto err;
+	}
+
+	*cmd = MI_BATCH_BUFFER_END;
+
+	__i915_gem_object_flush_map(obj, 0, 64);
+	i915_gem_object_unpin_map(obj);
+
+	intel_gt_chipset_flush(gt);
+
+	vma = i915_vma_instance(obj, gt->vm, NULL);
+	if (IS_ERR(vma)) {
+		err = PTR_ERR(vma);
+		goto err;
+	}
+
+	err = i915_vma_pin(vma, 0, 0, PIN_USER);
+	if (err)
+		goto err;
+
+	/* Force the wait now to avoid including it in the benchmark */
+	err = i915_vma_sync(vma);
+	if (err)
+		goto err_pin;
+
+	return vma;
+
+err_pin:
+	i915_vma_unpin(vma);
+err:
+	i915_gem_object_put(obj);
+	return ERR_PTR(err);
+}
+
+static int emit_bb_start(struct i915_request *rq, struct i915_vma *batch)
+{
+	return rq->engine->emit_bb_start(rq,
+					 i915_vma_offset(batch),
+					 i915_vma_size(batch),
+					 0);
+}
+
+static struct i915_request *
+empty_request(struct intel_engine_cs *engine,
+	      struct i915_vma *batch)
+{
+	struct i915_request *request;
+	int err;
+
+	request = i915_request_create(engine->kernel_context);
+	if (IS_ERR(request))
+		return request;
+
+	err = emit_bb_start(request, batch);
+	if (err)
+		goto out_request;
+
+	i915_request_get(request);
+out_request:
+	i915_request_add(request);
+	return err ? ERR_PTR(err) : request;
+}
+
+static int live_empty_request(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_engine_cs *engine;
+	struct igt_live_test t;
+	int err;
+
+	/*
+	 * Submit various sized batches of empty requests, to each engine
+	 * (individually), and wait for the batch to complete. We can check
+	 * the overhead of submitting requests to the hardware.
+	 */
+
+	for_each_uabi_engine(engine, i915) {
+		IGT_TIMEOUT(end_time);
+		struct i915_request *request;
+		struct i915_vma *batch;
+		unsigned long n, prime;
+		ktime_t times[2] = {};
+
+		batch = empty_batch(engine->gt);
+		if (IS_ERR(batch))
+			return PTR_ERR(batch);
+
+		err = igt_live_test_begin(&t, i915, __func__, engine->name);
+		if (err)
+			goto out_batch;
+
+		intel_engine_pm_get(engine);
+
+		/* Warmup / preload */
+		request = empty_request(engine, batch);
+		if (IS_ERR(request)) {
+			err = PTR_ERR(request);
+			intel_engine_pm_put(engine);
+			goto out_batch;
+		}
+		i915_request_wait(request, 0, MAX_SCHEDULE_TIMEOUT);
+
+		for_each_prime_number_from(prime, 1, 8192) {
+			times[1] = ktime_get_raw();
+
+			for (n = 0; n < prime; n++) {
+				i915_request_put(request);
+				request = empty_request(engine, batch);
+				if (IS_ERR(request)) {
+					err = PTR_ERR(request);
+					intel_engine_pm_put(engine);
+					goto out_batch;
+				}
+			}
+			i915_request_wait(request, 0, MAX_SCHEDULE_TIMEOUT);
+
+			times[1] = ktime_sub(ktime_get_raw(), times[1]);
+			if (prime == 1)
+				times[0] = times[1];
+
+			if (__igt_timeout(end_time, NULL))
+				break;
+		}
+		i915_request_put(request);
+		intel_engine_pm_put(engine);
+
+		err = igt_live_test_end(&t);
+		if (err)
+			goto out_batch;
+
+		pr_info("Batch latencies on %s: 1 = %lluns, %lu = %lluns\n",
+			engine->name,
+			ktime_to_ns(times[0]),
+			prime, div64_u64(ktime_to_ns(times[1]), prime));
+out_batch:
+		i915_vma_unpin(batch);
+		i915_vma_put(batch);
+		if (err)
+			break;
+	}
+
+	return err;
+}
+
+static struct i915_vma *recursive_batch(struct intel_gt *gt)
+{
+	struct drm_i915_gem_object *obj;
+	const int ver = GRAPHICS_VER(gt->i915);
+	struct i915_vma *vma;
+	u32 *cmd;
+	int err;
+
+	obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
+	if (IS_ERR(obj))
+		return ERR_CAST(obj);
+
+	vma = i915_vma_instance(obj, gt->vm, NULL);
+	if (IS_ERR(vma)) {
+		err = PTR_ERR(vma);
+		goto err;
+	}
+
+	err = i915_vma_pin(vma, 0, 0, PIN_USER);
+	if (err)
+		goto err;
+
+	cmd = i915_gem_object_pin_map_unlocked(obj, I915_MAP_WC);
+	if (IS_ERR(cmd)) {
+		err = PTR_ERR(cmd);
+		goto err;
+	}
+
+	if (ver >= 8) {
+		*cmd++ = MI_BATCH_BUFFER_START | 1 << 8 | 1;
+		*cmd++ = lower_32_bits(i915_vma_offset(vma));
+		*cmd++ = upper_32_bits(i915_vma_offset(vma));
+	} else if (ver >= 6) {
+		*cmd++ = MI_BATCH_BUFFER_START | 1 << 8;
+		*cmd++ = lower_32_bits(i915_vma_offset(vma));
+	} else {
+		*cmd++ = MI_BATCH_BUFFER_START | MI_BATCH_GTT;
+		*cmd++ = lower_32_bits(i915_vma_offset(vma));
+	}
+	*cmd++ = MI_BATCH_BUFFER_END; /* terminate early in case of error */
+
+	__i915_gem_object_flush_map(obj, 0, 64);
+	i915_gem_object_unpin_map(obj);
+
+	intel_gt_chipset_flush(gt);
+
+	return vma;
+
+err:
+	i915_gem_object_put(obj);
+	return ERR_PTR(err);
+}
+
+static int recursive_batch_resolve(struct i915_vma *batch)
+{
+	u32 *cmd;
+
+	cmd = i915_gem_object_pin_map_unlocked(batch->obj, I915_MAP_WC);
+	if (IS_ERR(cmd))
+		return PTR_ERR(cmd);
+
+	*cmd = MI_BATCH_BUFFER_END;
+
+	__i915_gem_object_flush_map(batch->obj, 0, sizeof(*cmd));
+	i915_gem_object_unpin_map(batch->obj);
+
+	intel_gt_chipset_flush(batch->vm->gt);
+
+	return 0;
+}
+
+static int live_all_engines(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	const unsigned int nengines = num_uabi_engines(i915);
+	struct intel_engine_cs *engine;
+	struct i915_request **request;
+	struct igt_live_test t;
+	unsigned int idx;
+	int err;
+
+	/*
+	 * Check we can submit requests to all engines simultaneously. We
+	 * send a recursive batch to each engine - checking that we don't
+	 * block doing so, and that they don't complete too soon.
+	 */
+
+	request = kcalloc(nengines, sizeof(*request), GFP_KERNEL);
+	if (!request)
+		return -ENOMEM;
+
+	err = igt_live_test_begin(&t, i915, __func__, "");
+	if (err)
+		goto out_free;
+
+	idx = 0;
+	for_each_uabi_engine(engine, i915) {
+		struct i915_vma *batch;
+
+		batch = recursive_batch(engine->gt);
+		if (IS_ERR(batch)) {
+			err = PTR_ERR(batch);
+			pr_err("%s: Unable to create batch, err=%d\n",
+			       __func__, err);
+			goto out_free;
+		}
+
+		i915_vma_lock(batch);
+		request[idx] = intel_engine_create_kernel_request(engine);
+		if (IS_ERR(request[idx])) {
+			err = PTR_ERR(request[idx]);
+			pr_err("%s: Request allocation failed with err=%d\n",
+			       __func__, err);
+			goto out_unlock;
+		}
+		GEM_BUG_ON(request[idx]->context->vm != batch->vm);
+
+		err = i915_vma_move_to_active(batch, request[idx], 0);
+		GEM_BUG_ON(err);
+
+		err = emit_bb_start(request[idx], batch);
+		GEM_BUG_ON(err);
+		request[idx]->batch = batch;
+
+		i915_request_get(request[idx]);
+		i915_request_add(request[idx]);
+		idx++;
+out_unlock:
+		i915_vma_unlock(batch);
+		if (err)
+			goto out_request;
+	}
+
+	idx = 0;
+	for_each_uabi_engine(engine, i915) {
+		if (i915_request_completed(request[idx])) {
+			pr_err("%s(%s): request completed too early!\n",
+			       __func__, engine->name);
+			err = -EINVAL;
+			goto out_request;
+		}
+		idx++;
+	}
+
+	idx = 0;
+	for_each_uabi_engine(engine, i915) {
+		err = recursive_batch_resolve(request[idx]->batch);
+		if (err) {
+			pr_err("%s: failed to resolve batch, err=%d\n",
+			       __func__, err);
+			goto out_request;
+		}
+		idx++;
+	}
+
+	idx = 0;
+	for_each_uabi_engine(engine, i915) {
+		struct i915_request *rq = request[idx];
+		long timeout;
+
+		timeout = i915_request_wait(rq, 0,
+					    MAX_SCHEDULE_TIMEOUT);
+		if (timeout < 0) {
+			err = timeout;
+			pr_err("%s: error waiting for request on %s, err=%d\n",
+			       __func__, engine->name, err);
+			goto out_request;
+		}
+
+		GEM_BUG_ON(!i915_request_completed(rq));
+		i915_vma_unpin(rq->batch);
+		i915_vma_put(rq->batch);
+		i915_request_put(rq);
+		request[idx] = NULL;
+		idx++;
+	}
+
+	err = igt_live_test_end(&t);
+
+out_request:
+	idx = 0;
+	for_each_uabi_engine(engine, i915) {
+		struct i915_request *rq = request[idx];
+
+		if (!rq)
+			continue;
+
+		if (rq->batch) {
+			i915_vma_unpin(rq->batch);
+			i915_vma_put(rq->batch);
+		}
+		i915_request_put(rq);
+		idx++;
+	}
+out_free:
+	kfree(request);
+	return err;
+}
+
+static int live_sequential_engines(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	const unsigned int nengines = num_uabi_engines(i915);
+	struct i915_request **request;
+	struct i915_request *prev = NULL;
+	struct intel_engine_cs *engine;
+	struct igt_live_test t;
+	unsigned int idx;
+	int err;
+
+	/*
+	 * Check we can submit requests to all engines sequentially, such
+	 * that each successive request waits for the earlier ones. This
+	 * tests that we don't execute requests out of order, even though
+	 * they are running on independent engines.
+	 */
+
+	request = kcalloc(nengines, sizeof(*request), GFP_KERNEL);
+	if (!request)
+		return -ENOMEM;
+
+	err = igt_live_test_begin(&t, i915, __func__, "");
+	if (err)
+		goto out_free;
+
+	idx = 0;
+	for_each_uabi_engine(engine, i915) {
+		struct i915_vma *batch;
+
+		batch = recursive_batch(engine->gt);
+		if (IS_ERR(batch)) {
+			err = PTR_ERR(batch);
+			pr_err("%s: Unable to create batch for %s, err=%d\n",
+			       __func__, engine->name, err);
+			goto out_free;
+		}
+
+		i915_vma_lock(batch);
+		request[idx] = intel_engine_create_kernel_request(engine);
+		if (IS_ERR(request[idx])) {
+			err = PTR_ERR(request[idx]);
+			pr_err("%s: Request allocation failed for %s with err=%d\n",
+			       __func__, engine->name, err);
+			goto out_unlock;
+		}
+		GEM_BUG_ON(request[idx]->context->vm != batch->vm);
+
+		if (prev) {
+			err = i915_request_await_dma_fence(request[idx],
+							   &prev->fence);
+			if (err) {
+				i915_request_add(request[idx]);
+				pr_err("%s: Request await failed for %s with err=%d\n",
+				       __func__, engine->name, err);
+				goto out_unlock;
+			}
+		}
+
+		err = i915_vma_move_to_active(batch, request[idx], 0);
+		GEM_BUG_ON(err);
+
+		err = emit_bb_start(request[idx], batch);
+		GEM_BUG_ON(err);
+		request[idx]->batch = batch;
+
+		i915_request_get(request[idx]);
+		i915_request_add(request[idx]);
+
+		prev = request[idx];
+		idx++;
+
+out_unlock:
+		i915_vma_unlock(batch);
+		if (err)
+			goto out_request;
+	}
+
+	idx = 0;
+	for_each_uabi_engine(engine, i915) {
+		long timeout;
+
+		if (i915_request_completed(request[idx])) {
+			pr_err("%s(%s): request completed too early!\n",
+			       __func__, engine->name);
+			err = -EINVAL;
+			goto out_request;
+		}
+
+		err = recursive_batch_resolve(request[idx]->batch);
+		if (err) {
+			pr_err("%s: failed to resolve batch, err=%d\n",
+			       __func__, err);
+			goto out_request;
+		}
+
+		timeout = i915_request_wait(request[idx], 0,
+					    MAX_SCHEDULE_TIMEOUT);
+		if (timeout < 0) {
+			err = timeout;
+			pr_err("%s: error waiting for request on %s, err=%d\n",
+			       __func__, engine->name, err);
+			goto out_request;
+		}
+
+		GEM_BUG_ON(!i915_request_completed(request[idx]));
+		idx++;
+	}
+
+	err = igt_live_test_end(&t);
+
+out_request:
+	idx = 0;
+	for_each_uabi_engine(engine, i915) {
+		u32 *cmd;
+
+		if (!request[idx])
+			break;
+
+		cmd = i915_gem_object_pin_map_unlocked(request[idx]->batch->obj,
+						       I915_MAP_WC);
+		if (!IS_ERR(cmd)) {
+			*cmd = MI_BATCH_BUFFER_END;
+
+			__i915_gem_object_flush_map(request[idx]->batch->obj,
+						    0, sizeof(*cmd));
+			i915_gem_object_unpin_map(request[idx]->batch->obj);
+
+			intel_gt_chipset_flush(engine->gt);
+		}
+
+		i915_vma_put(request[idx]->batch);
+		i915_request_put(request[idx]);
+		idx++;
+	}
+out_free:
+	kfree(request);
+	return err;
+}
+
+struct parallel_thread {
+	struct kthread_worker *worker;
+	struct kthread_work work;
+	struct intel_engine_cs *engine;
+	int result;
+};
+
+static void __live_parallel_engine1(struct kthread_work *work)
+{
+	struct parallel_thread *thread =
+		container_of(work, typeof(*thread), work);
+	struct intel_engine_cs *engine = thread->engine;
+	IGT_TIMEOUT(end_time);
+	unsigned long count;
+	int err = 0;
+
+	count = 0;
+	intel_engine_pm_get(engine);
+	do {
+		struct i915_request *rq;
+
+		rq = i915_request_create(engine->kernel_context);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			break;
+		}
+
+		i915_request_get(rq);
+		i915_request_add(rq);
+
+		err = 0;
+		if (i915_request_wait(rq, 0, HZ) < 0)
+			err = -ETIME;
+		i915_request_put(rq);
+		if (err)
+			break;
+
+		count++;
+	} while (!__igt_timeout(end_time, NULL));
+	intel_engine_pm_put(engine);
+
+	pr_info("%s: %lu request + sync\n", engine->name, count);
+	thread->result = err;
+}
+
+static void __live_parallel_engineN(struct kthread_work *work)
+{
+	struct parallel_thread *thread =
+		container_of(work, typeof(*thread), work);
+	struct intel_engine_cs *engine = thread->engine;
+	IGT_TIMEOUT(end_time);
+	unsigned long count;
+	int err = 0;
+
+	count = 0;
+	intel_engine_pm_get(engine);
+	do {
+		struct i915_request *rq;
+
+		rq = i915_request_create(engine->kernel_context);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			break;
+		}
+
+		i915_request_add(rq);
+		count++;
+	} while (!__igt_timeout(end_time, NULL));
+	intel_engine_pm_put(engine);
+
+	pr_info("%s: %lu requests\n", engine->name, count);
+	thread->result = err;
+}
+
+static bool wake_all(struct drm_i915_private *i915)
+{
+	if (atomic_dec_and_test(&i915->selftest.counter)) {
+		wake_up_var(&i915->selftest.counter);
+		return true;
+	}
+
+	return false;
+}
+
+static int wait_for_all(struct drm_i915_private *i915)
+{
+	if (wake_all(i915))
+		return 0;
+
+	if (wait_var_event_timeout(&i915->selftest.counter,
+				   !atomic_read(&i915->selftest.counter),
+				   i915_selftest.timeout_jiffies))
+		return 0;
+
+	return -ETIME;
+}
+
+static void __live_parallel_spin(struct kthread_work *work)
+{
+	struct parallel_thread *thread =
+		container_of(work, typeof(*thread), work);
+	struct intel_engine_cs *engine = thread->engine;
+	struct igt_spinner spin;
+	struct i915_request *rq;
+	int err = 0;
+
+	/*
+	 * Create a spinner running for eternity on each engine. If a second
+	 * spinner is incorrectly placed on the same engine, it will not be
+	 * able to start in time.
+	 */
+
+	if (igt_spinner_init(&spin, engine->gt)) {
+		wake_all(engine->i915);
+		thread->result = -ENOMEM;
+		return;
+	}
+
+	intel_engine_pm_get(engine);
+	rq = igt_spinner_create_request(&spin,
+					engine->kernel_context,
+					MI_NOOP); /* no preemption */
+	intel_engine_pm_put(engine);
+	if (IS_ERR(rq)) {
+		err = PTR_ERR(rq);
+		if (err == -ENODEV)
+			err = 0;
+		wake_all(engine->i915);
+		goto out_spin;
+	}
+
+	i915_request_get(rq);
+	i915_request_add(rq);
+	if (igt_wait_for_spinner(&spin, rq)) {
+		/* Occupy this engine for the whole test */
+		err = wait_for_all(engine->i915);
+	} else {
+		pr_err("Failed to start spinner on %s\n", engine->name);
+		err = -EINVAL;
+	}
+	igt_spinner_end(&spin);
+
+	if (err == 0 && i915_request_wait(rq, 0, HZ) < 0)
+		err = -EIO;
+	i915_request_put(rq);
+
+out_spin:
+	igt_spinner_fini(&spin);
+	thread->result = err;
+}
+
+static int live_parallel_engines(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	static void (* const func[])(struct kthread_work *) = {
+		__live_parallel_engine1,
+		__live_parallel_engineN,
+		__live_parallel_spin,
+		NULL,
+	};
+	const unsigned int nengines = num_uabi_engines(i915);
+	struct parallel_thread *threads;
+	struct intel_engine_cs *engine;
+	void (* const *fn)(struct kthread_work *);
+	int err = 0;
+
+	/*
+	 * Check we can submit requests to all engines concurrently. This
+	 * tests that we load up the system maximally.
+	 */
+
+	threads = kcalloc(nengines, sizeof(*threads), GFP_KERNEL);
+	if (!threads)
+		return -ENOMEM;
+
+	for (fn = func; !err && *fn; fn++) {
+		char name[KSYM_NAME_LEN];
+		struct igt_live_test t;
+		unsigned int idx;
+
+		snprintf(name, sizeof(name), "%ps", *fn);
+		err = igt_live_test_begin(&t, i915, __func__, name);
+		if (err)
+			break;
+
+		atomic_set(&i915->selftest.counter, nengines);
+
+		idx = 0;
+		for_each_uabi_engine(engine, i915) {
+			struct kthread_worker *worker;
+
+			worker = kthread_create_worker(0, "igt/parallel:%s",
+						       engine->name);
+			if (IS_ERR(worker)) {
+				err = PTR_ERR(worker);
+				break;
+			}
+
+			threads[idx].worker = worker;
+			threads[idx].result = 0;
+			threads[idx].engine = engine;
+
+			kthread_init_work(&threads[idx].work, *fn);
+			kthread_queue_work(worker, &threads[idx].work);
+			idx++;
+		}
+
+		idx = 0;
+		for_each_uabi_engine(engine, i915) {
+			int status;
+
+			if (!threads[idx].worker)
+				break;
+
+			kthread_flush_work(&threads[idx].work);
+			status = READ_ONCE(threads[idx].result);
+			if (status && !err)
+				err = status;
+
+			kthread_destroy_worker(threads[idx++].worker);
+		}
+
+		if (igt_live_test_end(&t))
+			err = -EIO;
+	}
+
+	kfree(threads);
+	return err;
+}
+
+static int
+max_batches(struct i915_gem_context *ctx, struct intel_engine_cs *engine)
+{
+	struct i915_request *rq;
+	int ret;
+
+	/*
+	 * Before execlists, all contexts share the same ringbuffer. With
+	 * execlists, each context/engine has a separate ringbuffer and
+	 * for the purposes of this test, inexhaustible.
+	 *
+	 * For the global ringbuffer though, we have to be very careful
+	 * that we do not wrap while preventing the execution of requests
+	 * with a unsignaled fence.
+	 */
+	if (HAS_EXECLISTS(ctx->i915))
+		return INT_MAX;
+
+	rq = igt_request_alloc(ctx, engine);
+	if (IS_ERR(rq)) {
+		ret = PTR_ERR(rq);
+	} else {
+		int sz;
+
+		ret = rq->ring->size - rq->reserved_space;
+		i915_request_add(rq);
+
+		sz = rq->ring->emit - rq->head;
+		if (sz < 0)
+			sz += rq->ring->size;
+		ret /= sz;
+		ret /= 2; /* leave half spare, in case of emergency! */
+	}
+
+	return ret;
+}
+
+static int live_breadcrumbs_smoketest(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	const unsigned int nengines = num_uabi_engines(i915);
+	const unsigned int ncpus = /* saturate with nengines * ncpus */
+		max_t(int, 2, DIV_ROUND_UP(num_online_cpus(), nengines));
+	unsigned long num_waits, num_fences;
+	struct intel_engine_cs *engine;
+	struct smoke_thread *threads;
+	struct igt_live_test live;
+	intel_wakeref_t wakeref;
+	struct smoketest *smoke;
+	unsigned int n, idx;
+	struct file *file;
+	int ret = 0;
+
+	/*
+	 * Smoketest our breadcrumb/signal handling for requests across multiple
+	 * threads. A very simple test to only catch the most egregious of bugs.
+	 * See __igt_breadcrumbs_smoketest();
+	 *
+	 * On real hardware this time.
+	 */
+
+	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+
+	file = mock_file(i915);
+	if (IS_ERR(file)) {
+		ret = PTR_ERR(file);
+		goto out_rpm;
+	}
+
+	smoke = kcalloc(nengines, sizeof(*smoke), GFP_KERNEL);
+	if (!smoke) {
+		ret = -ENOMEM;
+		goto out_file;
+	}
+
+	threads = kcalloc(ncpus * nengines, sizeof(*threads), GFP_KERNEL);
+	if (!threads) {
+		ret = -ENOMEM;
+		goto out_smoke;
+	}
+
+	smoke[0].request_alloc = __live_request_alloc;
+	smoke[0].ncontexts = 64;
+	smoke[0].contexts = kcalloc(smoke[0].ncontexts,
+				    sizeof(*smoke[0].contexts),
+				    GFP_KERNEL);
+	if (!smoke[0].contexts) {
+		ret = -ENOMEM;
+		goto out_threads;
+	}
+
+	for (n = 0; n < smoke[0].ncontexts; n++) {
+		smoke[0].contexts[n] = live_context(i915, file);
+		if (IS_ERR(smoke[0].contexts[n])) {
+			ret = PTR_ERR(smoke[0].contexts[n]);
+			goto out_contexts;
+		}
+	}
+
+	ret = igt_live_test_begin(&live, i915, __func__, "");
+	if (ret)
+		goto out_contexts;
+
+	idx = 0;
+	for_each_uabi_engine(engine, i915) {
+		smoke[idx] = smoke[0];
+		smoke[idx].engine = engine;
+		smoke[idx].max_batch =
+			max_batches(smoke[0].contexts[0], engine);
+		if (smoke[idx].max_batch < 0) {
+			ret = smoke[idx].max_batch;
+			goto out_flush;
+		}
+		/* One ring interleaved between requests from all cpus */
+		smoke[idx].max_batch /= ncpus + 1;
+		pr_debug("Limiting batches to %d requests on %s\n",
+			 smoke[idx].max_batch, engine->name);
+
+		for (n = 0; n < ncpus; n++) {
+			unsigned int i = idx * ncpus + n;
+			struct kthread_worker *worker;
+
+			worker = kthread_create_worker(0, "igt/%d.%d", idx, n);
+			if (IS_ERR(worker)) {
+				ret = PTR_ERR(worker);
+				goto out_flush;
+			}
+
+			threads[i].worker = worker;
+			threads[i].t = &smoke[idx];
+
+			kthread_init_work(&threads[i].work,
+					  __igt_breadcrumbs_smoketest);
+			kthread_queue_work(worker, &threads[i].work);
+		}
+
+		idx++;
+	}
+
+	msleep(jiffies_to_msecs(i915_selftest.timeout_jiffies));
+
+out_flush:
+	idx = 0;
+	num_waits = 0;
+	num_fences = 0;
+	for_each_uabi_engine(engine, i915) {
+		for (n = 0; n < ncpus; n++) {
+			unsigned int i = idx * ncpus + n;
+			int err;
+
+			if (!threads[i].worker)
+				continue;
+
+			WRITE_ONCE(threads[i].stop, true);
+			kthread_flush_work(&threads[i].work);
+			err = READ_ONCE(threads[i].result);
+			if (err < 0 && !ret)
+				ret = err;
+
+			kthread_destroy_worker(threads[i].worker);
+		}
+
+		num_waits += atomic_long_read(&smoke[idx].num_waits);
+		num_fences += atomic_long_read(&smoke[idx].num_fences);
+		idx++;
+	}
+	pr_info("Completed %lu waits for %lu fences across %d engines and %d cpus\n",
+		num_waits, num_fences, idx, ncpus);
+
+	ret = igt_live_test_end(&live) ?: ret;
+out_contexts:
+	kfree(smoke[0].contexts);
+out_threads:
+	kfree(threads);
+out_smoke:
+	kfree(smoke);
+out_file:
+	fput(file);
+out_rpm:
+	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+
+	return ret;
+}
+
+int i915_request_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(live_nop_request),
+		SUBTEST(live_all_engines),
+		SUBTEST(live_sequential_engines),
+		SUBTEST(live_parallel_engines),
+		SUBTEST(live_empty_request),
+		SUBTEST(live_cancel_request),
+		SUBTEST(live_breadcrumbs_smoketest),
+	};
+
+	if (intel_gt_is_wedged(to_gt(i915)))
+		return 0;
+
+	return i915_live_subtests(tests, i915);
+}
+
+static int switch_to_kernel_sync(struct intel_context *ce, int err)
+{
+	struct i915_request *rq;
+	struct dma_fence *fence;
+
+	rq = intel_engine_create_kernel_request(ce->engine);
+	if (IS_ERR(rq))
+		return PTR_ERR(rq);
+
+	fence = i915_active_fence_get(&ce->timeline->last_request);
+	if (fence) {
+		i915_request_await_dma_fence(rq, fence);
+		dma_fence_put(fence);
+	}
+
+	rq = i915_request_get(rq);
+	i915_request_add(rq);
+	if (i915_request_wait(rq, 0, HZ / 2) < 0 && !err)
+		err = -ETIME;
+	i915_request_put(rq);
+
+	while (!err && !intel_engine_is_idle(ce->engine))
+		intel_engine_flush_submission(ce->engine);
+
+	return err;
+}
+
+struct perf_stats {
+	struct intel_engine_cs *engine;
+	unsigned long count;
+	ktime_t time;
+	ktime_t busy;
+	u64 runtime;
+};
+
+struct perf_series {
+	struct drm_i915_private *i915;
+	unsigned int nengines;
+	struct intel_context *ce[];
+};
+
+static int cmp_u32(const void *A, const void *B)
+{
+	const u32 *a = A, *b = B;
+
+	return *a - *b;
+}
+
+static u32 trifilter(u32 *a)
+{
+	u64 sum;
+
+#define TF_COUNT 5
+	sort(a, TF_COUNT, sizeof(*a), cmp_u32, NULL);
+
+	sum = mul_u32_u32(a[2], 2);
+	sum += a[1];
+	sum += a[3];
+
+	GEM_BUG_ON(sum > U32_MAX);
+	return sum;
+#define TF_BIAS 2
+}
+
+static u64 cycles_to_ns(struct intel_engine_cs *engine, u32 cycles)
+{
+	u64 ns = intel_gt_clock_interval_to_ns(engine->gt, cycles);
+
+	return DIV_ROUND_CLOSEST(ns, 1 << TF_BIAS);
+}
+
+static u32 *emit_timestamp_store(u32 *cs, struct intel_context *ce, u32 offset)
+{
+	*cs++ = MI_STORE_REGISTER_MEM_GEN8 | MI_USE_GGTT;
+	*cs++ = i915_mmio_reg_offset(RING_TIMESTAMP((ce->engine->mmio_base)));
+	*cs++ = offset;
+	*cs++ = 0;
+
+	return cs;
+}
+
+static u32 *emit_store_dw(u32 *cs, u32 offset, u32 value)
+{
+	*cs++ = MI_STORE_DWORD_IMM_GEN4 | MI_USE_GGTT;
+	*cs++ = offset;
+	*cs++ = 0;
+	*cs++ = value;
+
+	return cs;
+}
+
+static u32 *emit_semaphore_poll(u32 *cs, u32 mode, u32 value, u32 offset)
+{
+	*cs++ = MI_SEMAPHORE_WAIT |
+		MI_SEMAPHORE_GLOBAL_GTT |
+		MI_SEMAPHORE_POLL |
+		mode;
+	*cs++ = value;
+	*cs++ = offset;
+	*cs++ = 0;
+
+	return cs;
+}
+
+static u32 *emit_semaphore_poll_until(u32 *cs, u32 offset, u32 value)
+{
+	return emit_semaphore_poll(cs, MI_SEMAPHORE_SAD_EQ_SDD, value, offset);
+}
+
+static void semaphore_set(u32 *sema, u32 value)
+{
+	WRITE_ONCE(*sema, value);
+	wmb(); /* flush the update to the cache, and beyond */
+}
+
+static u32 *hwsp_scratch(const struct intel_context *ce)
+{
+	return memset32(ce->engine->status_page.addr + 1000, 0, 21);
+}
+
+static u32 hwsp_offset(const struct intel_context *ce, u32 *dw)
+{
+	return (i915_ggtt_offset(ce->engine->status_page.vma) +
+		offset_in_page(dw));
+}
+
+static int measure_semaphore_response(struct intel_context *ce)
+{
+	u32 *sema = hwsp_scratch(ce);
+	const u32 offset = hwsp_offset(ce, sema);
+	u32 elapsed[TF_COUNT], cycles;
+	struct i915_request *rq;
+	u32 *cs;
+	int err;
+	int i;
+
+	/*
+	 * Measure how many cycles it takes for the HW to detect the change
+	 * in a semaphore value.
+	 *
+	 *    A: read CS_TIMESTAMP from CPU
+	 *    poke semaphore
+	 *    B: read CS_TIMESTAMP on GPU
+	 *
+	 * Semaphore latency: B - A
+	 */
+
+	semaphore_set(sema, -1);
+
+	rq = i915_request_create(ce);
+	if (IS_ERR(rq))
+		return PTR_ERR(rq);
+
+	cs = intel_ring_begin(rq, 4 + 12 * ARRAY_SIZE(elapsed));
+	if (IS_ERR(cs)) {
+		i915_request_add(rq);
+		err = PTR_ERR(cs);
+		goto err;
+	}
+
+	cs = emit_store_dw(cs, offset, 0);
+	for (i = 1; i <= ARRAY_SIZE(elapsed); i++) {
+		cs = emit_semaphore_poll_until(cs, offset, i);
+		cs = emit_timestamp_store(cs, ce, offset + i * sizeof(u32));
+		cs = emit_store_dw(cs, offset, 0);
+	}
+
+	intel_ring_advance(rq, cs);
+	i915_request_add(rq);
+
+	if (wait_for(READ_ONCE(*sema) == 0, 50)) {
+		err = -EIO;
+		goto err;
+	}
+
+	for (i = 1; i <= ARRAY_SIZE(elapsed); i++) {
+		preempt_disable();
+		cycles = ENGINE_READ_FW(ce->engine, RING_TIMESTAMP);
+		semaphore_set(sema, i);
+		preempt_enable();
+
+		if (wait_for(READ_ONCE(*sema) == 0, 50)) {
+			err = -EIO;
+			goto err;
+		}
+
+		elapsed[i - 1] = sema[i] - cycles;
+	}
+
+	cycles = trifilter(elapsed);
+	pr_info("%s: semaphore response %d cycles, %lluns\n",
+		ce->engine->name, cycles >> TF_BIAS,
+		cycles_to_ns(ce->engine, cycles));
+
+	return intel_gt_wait_for_idle(ce->engine->gt, HZ);
+
+err:
+	intel_gt_set_wedged(ce->engine->gt);
+	return err;
+}
+
+static int measure_idle_dispatch(struct intel_context *ce)
+{
+	u32 *sema = hwsp_scratch(ce);
+	const u32 offset = hwsp_offset(ce, sema);
+	u32 elapsed[TF_COUNT], cycles;
+	u32 *cs;
+	int err;
+	int i;
+
+	/*
+	 * Measure how long it takes for us to submit a request while the
+	 * engine is idle, but is resting in our context.
+	 *
+	 *    A: read CS_TIMESTAMP from CPU
+	 *    submit request
+	 *    B: read CS_TIMESTAMP on GPU
+	 *
+	 * Submission latency: B - A
+	 */
+
+	for (i = 0; i < ARRAY_SIZE(elapsed); i++) {
+		struct i915_request *rq;
+
+		err = intel_gt_wait_for_idle(ce->engine->gt, HZ / 2);
+		if (err)
+			return err;
+
+		rq = i915_request_create(ce);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			goto err;
+		}
+
+		cs = intel_ring_begin(rq, 4);
+		if (IS_ERR(cs)) {
+			i915_request_add(rq);
+			err = PTR_ERR(cs);
+			goto err;
+		}
+
+		cs = emit_timestamp_store(cs, ce, offset + i * sizeof(u32));
+
+		intel_ring_advance(rq, cs);
+
+		preempt_disable();
+		local_bh_disable();
+		elapsed[i] = ENGINE_READ_FW(ce->engine, RING_TIMESTAMP);
+		i915_request_add(rq);
+		local_bh_enable();
+		preempt_enable();
+	}
+
+	err = intel_gt_wait_for_idle(ce->engine->gt, HZ / 2);
+	if (err)
+		goto err;
+
+	for (i = 0; i < ARRAY_SIZE(elapsed); i++)
+		elapsed[i] = sema[i] - elapsed[i];
+
+	cycles = trifilter(elapsed);
+	pr_info("%s: idle dispatch latency %d cycles, %lluns\n",
+		ce->engine->name, cycles >> TF_BIAS,
+		cycles_to_ns(ce->engine, cycles));
+
+	return intel_gt_wait_for_idle(ce->engine->gt, HZ);
+
+err:
+	intel_gt_set_wedged(ce->engine->gt);
+	return err;
+}
+
+static int measure_busy_dispatch(struct intel_context *ce)
+{
+	u32 *sema = hwsp_scratch(ce);
+	const u32 offset = hwsp_offset(ce, sema);
+	u32 elapsed[TF_COUNT + 1], cycles;
+	u32 *cs;
+	int err;
+	int i;
+
+	/*
+	 * Measure how long it takes for us to submit a request while the
+	 * engine is busy, polling on a semaphore in our context. With
+	 * direct submission, this will include the cost of a lite restore.
+	 *
+	 *    A: read CS_TIMESTAMP from CPU
+	 *    submit request
+	 *    B: read CS_TIMESTAMP on GPU
+	 *
+	 * Submission latency: B - A
+	 */
+
+	for (i = 1; i <= ARRAY_SIZE(elapsed); i++) {
+		struct i915_request *rq;
+
+		rq = i915_request_create(ce);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			goto err;
+		}
+
+		cs = intel_ring_begin(rq, 12);
+		if (IS_ERR(cs)) {
+			i915_request_add(rq);
+			err = PTR_ERR(cs);
+			goto err;
+		}
+
+		cs = emit_store_dw(cs, offset + i * sizeof(u32), -1);
+		cs = emit_semaphore_poll_until(cs, offset, i);
+		cs = emit_timestamp_store(cs, ce, offset + i * sizeof(u32));
+
+		intel_ring_advance(rq, cs);
+
+		if (i > 1 && wait_for(READ_ONCE(sema[i - 1]), 500)) {
+			err = -EIO;
+			goto err;
+		}
+
+		preempt_disable();
+		local_bh_disable();
+		elapsed[i - 1] = ENGINE_READ_FW(ce->engine, RING_TIMESTAMP);
+		i915_request_add(rq);
+		local_bh_enable();
+		semaphore_set(sema, i - 1);
+		preempt_enable();
+	}
+
+	wait_for(READ_ONCE(sema[i - 1]), 500);
+	semaphore_set(sema, i - 1);
+
+	for (i = 1; i <= TF_COUNT; i++) {
+		GEM_BUG_ON(sema[i] == -1);
+		elapsed[i - 1] = sema[i] - elapsed[i];
+	}
+
+	cycles = trifilter(elapsed);
+	pr_info("%s: busy dispatch latency %d cycles, %lluns\n",
+		ce->engine->name, cycles >> TF_BIAS,
+		cycles_to_ns(ce->engine, cycles));
+
+	return intel_gt_wait_for_idle(ce->engine->gt, HZ);
+
+err:
+	intel_gt_set_wedged(ce->engine->gt);
+	return err;
+}
+
+static int plug(struct intel_engine_cs *engine, u32 *sema, u32 mode, int value)
+{
+	const u32 offset =
+		i915_ggtt_offset(engine->status_page.vma) +
+		offset_in_page(sema);
+	struct i915_request *rq;
+	u32 *cs;
+
+	rq = i915_request_create(engine->kernel_context);
+	if (IS_ERR(rq))
+		return PTR_ERR(rq);
+
+	cs = intel_ring_begin(rq, 4);
+	if (IS_ERR(cs)) {
+		i915_request_add(rq);
+		return PTR_ERR(cs);
+	}
+
+	cs = emit_semaphore_poll(cs, mode, value, offset);
+
+	intel_ring_advance(rq, cs);
+	i915_request_add(rq);
+
+	return 0;
+}
+
+static int measure_inter_request(struct intel_context *ce)
+{
+	u32 *sema = hwsp_scratch(ce);
+	const u32 offset = hwsp_offset(ce, sema);
+	u32 elapsed[TF_COUNT + 1], cycles;
+	struct i915_sw_fence *submit;
+	int i, err;
+
+	/*
+	 * Measure how long it takes to advance from one request into the
+	 * next. Between each request we flush the GPU caches to memory,
+	 * update the breadcrumbs, and then invalidate those caches.
+	 * We queue up all the requests to be submitted in one batch so
+	 * it should be one set of contiguous measurements.
+	 *
+	 *    A: read CS_TIMESTAMP on GPU
+	 *    advance request
+	 *    B: read CS_TIMESTAMP on GPU
+	 *
+	 * Request latency: B - A
+	 */
+
+	err = plug(ce->engine, sema, MI_SEMAPHORE_SAD_NEQ_SDD, 0);
+	if (err)
+		return err;
+
+	submit = heap_fence_create(GFP_KERNEL);
+	if (!submit) {
+		semaphore_set(sema, 1);
+		return -ENOMEM;
+	}
+
+	intel_engine_flush_submission(ce->engine);
+	for (i = 1; i <= ARRAY_SIZE(elapsed); i++) {
+		struct i915_request *rq;
+		u32 *cs;
+
+		rq = i915_request_create(ce);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			goto err_submit;
+		}
+
+		err = i915_sw_fence_await_sw_fence_gfp(&rq->submit,
+						       submit,
+						       GFP_KERNEL);
+		if (err < 0) {
+			i915_request_add(rq);
+			goto err_submit;
+		}
+
+		cs = intel_ring_begin(rq, 4);
+		if (IS_ERR(cs)) {
+			i915_request_add(rq);
+			err = PTR_ERR(cs);
+			goto err_submit;
+		}
+
+		cs = emit_timestamp_store(cs, ce, offset + i * sizeof(u32));
+
+		intel_ring_advance(rq, cs);
+		i915_request_add(rq);
+	}
+	i915_sw_fence_commit(submit);
+	intel_engine_flush_submission(ce->engine);
+	heap_fence_put(submit);
+
+	semaphore_set(sema, 1);
+	err = intel_gt_wait_for_idle(ce->engine->gt, HZ / 2);
+	if (err)
+		goto err;
+
+	for (i = 1; i <= TF_COUNT; i++)
+		elapsed[i - 1] = sema[i + 1] - sema[i];
+
+	cycles = trifilter(elapsed);
+	pr_info("%s: inter-request latency %d cycles, %lluns\n",
+		ce->engine->name, cycles >> TF_BIAS,
+		cycles_to_ns(ce->engine, cycles));
+
+	return intel_gt_wait_for_idle(ce->engine->gt, HZ);
+
+err_submit:
+	i915_sw_fence_commit(submit);
+	heap_fence_put(submit);
+	semaphore_set(sema, 1);
+err:
+	intel_gt_set_wedged(ce->engine->gt);
+	return err;
+}
+
+static int measure_context_switch(struct intel_context *ce)
+{
+	u32 *sema = hwsp_scratch(ce);
+	const u32 offset = hwsp_offset(ce, sema);
+	struct i915_request *fence = NULL;
+	u32 elapsed[TF_COUNT + 1], cycles;
+	int i, j, err;
+	u32 *cs;
+
+	/*
+	 * Measure how long it takes to advance from one request in one
+	 * context to a request in another context. This allows us to
+	 * measure how long the context save/restore take, along with all
+	 * the inter-context setup we require.
+	 *
+	 *    A: read CS_TIMESTAMP on GPU
+	 *    switch context
+	 *    B: read CS_TIMESTAMP on GPU
+	 *
+	 * Context switch latency: B - A
+	 */
+
+	err = plug(ce->engine, sema, MI_SEMAPHORE_SAD_NEQ_SDD, 0);
+	if (err)
+		return err;
+
+	for (i = 1; i <= ARRAY_SIZE(elapsed); i++) {
+		struct intel_context *arr[] = {
+			ce, ce->engine->kernel_context
+		};
+		u32 addr = offset + ARRAY_SIZE(arr) * i * sizeof(u32);
+
+		for (j = 0; j < ARRAY_SIZE(arr); j++) {
+			struct i915_request *rq;
+
+			rq = i915_request_create(arr[j]);
+			if (IS_ERR(rq)) {
+				err = PTR_ERR(rq);
+				goto err_fence;
+			}
+
+			if (fence) {
+				err = i915_request_await_dma_fence(rq,
+								   &fence->fence);
+				if (err) {
+					i915_request_add(rq);
+					goto err_fence;
+				}
+			}
+
+			cs = intel_ring_begin(rq, 4);
+			if (IS_ERR(cs)) {
+				i915_request_add(rq);
+				err = PTR_ERR(cs);
+				goto err_fence;
+			}
+
+			cs = emit_timestamp_store(cs, ce, addr);
+			addr += sizeof(u32);
+
+			intel_ring_advance(rq, cs);
+
+			i915_request_put(fence);
+			fence = i915_request_get(rq);
+
+			i915_request_add(rq);
+		}
+	}
+	i915_request_put(fence);
+	intel_engine_flush_submission(ce->engine);
+
+	semaphore_set(sema, 1);
+	err = intel_gt_wait_for_idle(ce->engine->gt, HZ / 2);
+	if (err)
+		goto err;
+
+	for (i = 1; i <= TF_COUNT; i++)
+		elapsed[i - 1] = sema[2 * i + 2] - sema[2 * i + 1];
+
+	cycles = trifilter(elapsed);
+	pr_info("%s: context switch latency %d cycles, %lluns\n",
+		ce->engine->name, cycles >> TF_BIAS,
+		cycles_to_ns(ce->engine, cycles));
+
+	return intel_gt_wait_for_idle(ce->engine->gt, HZ);
+
+err_fence:
+	i915_request_put(fence);
+	semaphore_set(sema, 1);
+err:
+	intel_gt_set_wedged(ce->engine->gt);
+	return err;
+}
+
+static int measure_preemption(struct intel_context *ce)
+{
+	u32 *sema = hwsp_scratch(ce);
+	const u32 offset = hwsp_offset(ce, sema);
+	u32 elapsed[TF_COUNT], cycles;
+	u32 *cs;
+	int err;
+	int i;
+
+	/*
+	 * We measure two latencies while triggering preemption. The first
+	 * latency is how long it takes for us to submit a preempting request.
+	 * The second latency is how it takes for us to return from the
+	 * preemption back to the original context.
+	 *
+	 *    A: read CS_TIMESTAMP from CPU
+	 *    submit preemption
+	 *    B: read CS_TIMESTAMP on GPU (in preempting context)
+	 *    context switch
+	 *    C: read CS_TIMESTAMP on GPU (in original context)
+	 *
+	 * Preemption dispatch latency: B - A
+	 * Preemption switch latency: C - B
+	 */
+
+	if (!intel_engine_has_preemption(ce->engine))
+		return 0;
+
+	for (i = 1; i <= ARRAY_SIZE(elapsed); i++) {
+		u32 addr = offset + 2 * i * sizeof(u32);
+		struct i915_request *rq;
+
+		rq = i915_request_create(ce);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			goto err;
+		}
+
+		cs = intel_ring_begin(rq, 12);
+		if (IS_ERR(cs)) {
+			i915_request_add(rq);
+			err = PTR_ERR(cs);
+			goto err;
+		}
+
+		cs = emit_store_dw(cs, addr, -1);
+		cs = emit_semaphore_poll_until(cs, offset, i);
+		cs = emit_timestamp_store(cs, ce, addr + sizeof(u32));
+
+		intel_ring_advance(rq, cs);
+		i915_request_add(rq);
+
+		if (wait_for(READ_ONCE(sema[2 * i]) == -1, 500)) {
+			err = -EIO;
+			goto err;
+		}
+
+		rq = i915_request_create(ce->engine->kernel_context);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			goto err;
+		}
+
+		cs = intel_ring_begin(rq, 8);
+		if (IS_ERR(cs)) {
+			i915_request_add(rq);
+			err = PTR_ERR(cs);
+			goto err;
+		}
+
+		cs = emit_timestamp_store(cs, ce, addr);
+		cs = emit_store_dw(cs, offset, i);
+
+		intel_ring_advance(rq, cs);
+		rq->sched.attr.priority = I915_PRIORITY_BARRIER;
+
+		elapsed[i - 1] = ENGINE_READ_FW(ce->engine, RING_TIMESTAMP);
+		i915_request_add(rq);
+	}
+
+	if (wait_for(READ_ONCE(sema[2 * i - 2]) != -1, 500)) {
+		err = -EIO;
+		goto err;
+	}
+
+	for (i = 1; i <= TF_COUNT; i++)
+		elapsed[i - 1] = sema[2 * i + 0] - elapsed[i - 1];
+
+	cycles = trifilter(elapsed);
+	pr_info("%s: preemption dispatch latency %d cycles, %lluns\n",
+		ce->engine->name, cycles >> TF_BIAS,
+		cycles_to_ns(ce->engine, cycles));
+
+	for (i = 1; i <= TF_COUNT; i++)
+		elapsed[i - 1] = sema[2 * i + 1] - sema[2 * i + 0];
+
+	cycles = trifilter(elapsed);
+	pr_info("%s: preemption switch latency %d cycles, %lluns\n",
+		ce->engine->name, cycles >> TF_BIAS,
+		cycles_to_ns(ce->engine, cycles));
+
+	return intel_gt_wait_for_idle(ce->engine->gt, HZ);
+
+err:
+	intel_gt_set_wedged(ce->engine->gt);
+	return err;
+}
+
+struct signal_cb {
+	struct dma_fence_cb base;
+	bool seen;
+};
+
+static void signal_cb(struct dma_fence *fence, struct dma_fence_cb *cb)
+{
+	struct signal_cb *s = container_of(cb, typeof(*s), base);
+
+	smp_store_mb(s->seen, true); /* be safe, be strong */
+}
+
+static int measure_completion(struct intel_context *ce)
+{
+	u32 *sema = hwsp_scratch(ce);
+	const u32 offset = hwsp_offset(ce, sema);
+	u32 elapsed[TF_COUNT], cycles;
+	u32 *cs;
+	int err;
+	int i;
+
+	/*
+	 * Measure how long it takes for the signal (interrupt) to be
+	 * sent from the GPU to be processed by the CPU.
+	 *
+	 *    A: read CS_TIMESTAMP on GPU
+	 *    signal
+	 *    B: read CS_TIMESTAMP from CPU
+	 *
+	 * Completion latency: B - A
+	 */
+
+	for (i = 1; i <= ARRAY_SIZE(elapsed); i++) {
+		struct signal_cb cb = { .seen = false };
+		struct i915_request *rq;
+
+		rq = i915_request_create(ce);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			goto err;
+		}
+
+		cs = intel_ring_begin(rq, 12);
+		if (IS_ERR(cs)) {
+			i915_request_add(rq);
+			err = PTR_ERR(cs);
+			goto err;
+		}
+
+		cs = emit_store_dw(cs, offset + i * sizeof(u32), -1);
+		cs = emit_semaphore_poll_until(cs, offset, i);
+		cs = emit_timestamp_store(cs, ce, offset + i * sizeof(u32));
+
+		intel_ring_advance(rq, cs);
+
+		dma_fence_add_callback(&rq->fence, &cb.base, signal_cb);
+		i915_request_add(rq);
+
+		intel_engine_flush_submission(ce->engine);
+		if (wait_for(READ_ONCE(sema[i]) == -1, 50)) {
+			err = -EIO;
+			goto err;
+		}
+
+		preempt_disable();
+		semaphore_set(sema, i);
+		while (!READ_ONCE(cb.seen))
+			cpu_relax();
+
+		elapsed[i - 1] = ENGINE_READ_FW(ce->engine, RING_TIMESTAMP);
+		preempt_enable();
+	}
+
+	err = intel_gt_wait_for_idle(ce->engine->gt, HZ / 2);
+	if (err)
+		goto err;
+
+	for (i = 0; i < ARRAY_SIZE(elapsed); i++) {
+		GEM_BUG_ON(sema[i + 1] == -1);
+		elapsed[i] = elapsed[i] - sema[i + 1];
+	}
+
+	cycles = trifilter(elapsed);
+	pr_info("%s: completion latency %d cycles, %lluns\n",
+		ce->engine->name, cycles >> TF_BIAS,
+		cycles_to_ns(ce->engine, cycles));
+
+	return intel_gt_wait_for_idle(ce->engine->gt, HZ);
+
+err:
+	intel_gt_set_wedged(ce->engine->gt);
+	return err;
+}
+
+static void rps_pin(struct intel_gt *gt)
+{
+	/* Pin the frequency to max */
+	atomic_inc(&gt->rps.num_waiters);
+	intel_uncore_forcewake_get(gt->uncore, FORCEWAKE_ALL);
+
+	mutex_lock(&gt->rps.lock);
+	intel_rps_set(&gt->rps, gt->rps.max_freq);
+	mutex_unlock(&gt->rps.lock);
+}
+
+static void rps_unpin(struct intel_gt *gt)
+{
+	intel_uncore_forcewake_put(gt->uncore, FORCEWAKE_ALL);
+	atomic_dec(&gt->rps.num_waiters);
+}
+
+static int perf_request_latency(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct intel_engine_cs *engine;
+	struct pm_qos_request qos;
+	int err = 0;
+
+	if (GRAPHICS_VER(i915) < 8) /* per-engine CS timestamp, semaphores */
+		return 0;
+
+	cpu_latency_qos_add_request(&qos, 0); /* disable cstates */
+
+	for_each_uabi_engine(engine, i915) {
+		struct intel_context *ce;
+
+		ce = intel_context_create(engine);
+		if (IS_ERR(ce)) {
+			err = PTR_ERR(ce);
+			goto out;
+		}
+
+		err = intel_context_pin(ce);
+		if (err) {
+			intel_context_put(ce);
+			goto out;
+		}
+
+		st_engine_heartbeat_disable(engine);
+		rps_pin(engine->gt);
+
+		if (err == 0)
+			err = measure_semaphore_response(ce);
+		if (err == 0)
+			err = measure_idle_dispatch(ce);
+		if (err == 0)
+			err = measure_busy_dispatch(ce);
+		if (err == 0)
+			err = measure_inter_request(ce);
+		if (err == 0)
+			err = measure_context_switch(ce);
+		if (err == 0)
+			err = measure_preemption(ce);
+		if (err == 0)
+			err = measure_completion(ce);
+
+		rps_unpin(engine->gt);
+		st_engine_heartbeat_enable(engine);
+
+		intel_context_unpin(ce);
+		intel_context_put(ce);
+		if (err)
+			goto out;
+	}
+
+out:
+	if (igt_flush_test(i915))
+		err = -EIO;
+
+	cpu_latency_qos_remove_request(&qos);
+	return err;
+}
+
+static int s_sync0(void *arg)
+{
+	struct perf_series *ps = arg;
+	IGT_TIMEOUT(end_time);
+	unsigned int idx = 0;
+	int err = 0;
+
+	GEM_BUG_ON(!ps->nengines);
+	do {
+		struct i915_request *rq;
+
+		rq = i915_request_create(ps->ce[idx]);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			break;
+		}
+
+		i915_request_get(rq);
+		i915_request_add(rq);
+
+		if (i915_request_wait(rq, 0, HZ / 5) < 0)
+			err = -ETIME;
+		i915_request_put(rq);
+		if (err)
+			break;
+
+		if (++idx == ps->nengines)
+			idx = 0;
+	} while (!__igt_timeout(end_time, NULL));
+
+	return err;
+}
+
+static int s_sync1(void *arg)
+{
+	struct perf_series *ps = arg;
+	struct i915_request *prev = NULL;
+	IGT_TIMEOUT(end_time);
+	unsigned int idx = 0;
+	int err = 0;
+
+	GEM_BUG_ON(!ps->nengines);
+	do {
+		struct i915_request *rq;
+
+		rq = i915_request_create(ps->ce[idx]);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			break;
+		}
+
+		i915_request_get(rq);
+		i915_request_add(rq);
+
+		if (prev && i915_request_wait(prev, 0, HZ / 5) < 0)
+			err = -ETIME;
+		i915_request_put(prev);
+		prev = rq;
+		if (err)
+			break;
+
+		if (++idx == ps->nengines)
+			idx = 0;
+	} while (!__igt_timeout(end_time, NULL));
+	i915_request_put(prev);
+
+	return err;
+}
+
+static int s_many(void *arg)
+{
+	struct perf_series *ps = arg;
+	IGT_TIMEOUT(end_time);
+	unsigned int idx = 0;
+
+	GEM_BUG_ON(!ps->nengines);
+	do {
+		struct i915_request *rq;
+
+		rq = i915_request_create(ps->ce[idx]);
+		if (IS_ERR(rq))
+			return PTR_ERR(rq);
+
+		i915_request_add(rq);
+
+		if (++idx == ps->nengines)
+			idx = 0;
+	} while (!__igt_timeout(end_time, NULL));
+
+	return 0;
+}
+
+static int perf_series_engines(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	static int (* const func[])(void *arg) = {
+		s_sync0,
+		s_sync1,
+		s_many,
+		NULL,
+	};
+	const unsigned int nengines = num_uabi_engines(i915);
+	struct intel_engine_cs *engine;
+	int (* const *fn)(void *arg);
+	struct pm_qos_request qos;
+	struct perf_stats *stats;
+	struct perf_series *ps;
+	unsigned int idx;
+	int err = 0;
+
+	stats = kcalloc(nengines, sizeof(*stats), GFP_KERNEL);
+	if (!stats)
+		return -ENOMEM;
+
+	ps = kzalloc(struct_size(ps, ce, nengines), GFP_KERNEL);
+	if (!ps) {
+		kfree(stats);
+		return -ENOMEM;
+	}
+
+	cpu_latency_qos_add_request(&qos, 0); /* disable cstates */
+
+	ps->i915 = i915;
+	ps->nengines = nengines;
+
+	idx = 0;
+	for_each_uabi_engine(engine, i915) {
+		struct intel_context *ce;
+
+		ce = intel_context_create(engine);
+		if (IS_ERR(ce)) {
+			err = PTR_ERR(ce);
+			goto out;
+		}
+
+		err = intel_context_pin(ce);
+		if (err) {
+			intel_context_put(ce);
+			goto out;
+		}
+
+		ps->ce[idx++] = ce;
+	}
+	GEM_BUG_ON(idx != ps->nengines);
+
+	for (fn = func; *fn && !err; fn++) {
+		char name[KSYM_NAME_LEN];
+		struct igt_live_test t;
+
+		snprintf(name, sizeof(name), "%ps", *fn);
+		err = igt_live_test_begin(&t, i915, __func__, name);
+		if (err)
+			break;
+
+		for (idx = 0; idx < nengines; idx++) {
+			struct perf_stats *p =
+				memset(&stats[idx], 0, sizeof(stats[idx]));
+			struct intel_context *ce = ps->ce[idx];
+
+			p->engine = ps->ce[idx]->engine;
+			intel_engine_pm_get(p->engine);
+
+			if (intel_engine_supports_stats(p->engine))
+				p->busy = intel_engine_get_busy_time(p->engine,
+								     &p->time) + 1;
+			else
+				p->time = ktime_get();
+			p->runtime = -intel_context_get_total_runtime_ns(ce);
+		}
+
+		err = (*fn)(ps);
+		if (igt_live_test_end(&t))
+			err = -EIO;
+
+		for (idx = 0; idx < nengines; idx++) {
+			struct perf_stats *p = &stats[idx];
+			struct intel_context *ce = ps->ce[idx];
+			int integer, decimal;
+			u64 busy, dt, now;
+
+			if (p->busy)
+				p->busy = ktime_sub(intel_engine_get_busy_time(p->engine,
+									       &now),
+						    p->busy - 1);
+			else
+				now = ktime_get();
+			p->time = ktime_sub(now, p->time);
+
+			err = switch_to_kernel_sync(ce, err);
+			p->runtime += intel_context_get_total_runtime_ns(ce);
+			intel_engine_pm_put(p->engine);
+
+			busy = 100 * ktime_to_ns(p->busy);
+			dt = ktime_to_ns(p->time);
+			if (dt) {
+				integer = div64_u64(busy, dt);
+				busy -= integer * dt;
+				decimal = div64_u64(100 * busy, dt);
+			} else {
+				integer = 0;
+				decimal = 0;
+			}
+
+			pr_info("%s %5s: { seqno:%d, busy:%d.%02d%%, runtime:%lldms, walltime:%lldms }\n",
+				name, p->engine->name, ce->timeline->seqno,
+				integer, decimal,
+				div_u64(p->runtime, 1000 * 1000),
+				div_u64(ktime_to_ns(p->time), 1000 * 1000));
+		}
+	}
+
+out:
+	for (idx = 0; idx < nengines; idx++) {
+		if (IS_ERR_OR_NULL(ps->ce[idx]))
+			break;
+
+		intel_context_unpin(ps->ce[idx]);
+		intel_context_put(ps->ce[idx]);
+	}
+	kfree(ps);
+
+	cpu_latency_qos_remove_request(&qos);
+	kfree(stats);
+	return err;
+}
+
+struct p_thread {
+	struct perf_stats p;
+	struct kthread_worker *worker;
+	struct kthread_work work;
+	struct intel_engine_cs *engine;
+	int result;
+};
+
+static void p_sync0(struct kthread_work *work)
+{
+	struct p_thread *thread = container_of(work, typeof(*thread), work);
+	struct perf_stats *p = &thread->p;
+	struct intel_engine_cs *engine = p->engine;
+	struct intel_context *ce;
+	IGT_TIMEOUT(end_time);
+	unsigned long count;
+	bool busy;
+	int err = 0;
+
+	ce = intel_context_create(engine);
+	if (IS_ERR(ce)) {
+		thread->result = PTR_ERR(ce);
+		return;
+	}
+
+	err = intel_context_pin(ce);
+	if (err) {
+		intel_context_put(ce);
+		thread->result = err;
+		return;
+	}
+
+	if (intel_engine_supports_stats(engine)) {
+		p->busy = intel_engine_get_busy_time(engine, &p->time);
+		busy = true;
+	} else {
+		p->time = ktime_get();
+		busy = false;
+	}
+
+	count = 0;
+	do {
+		struct i915_request *rq;
+
+		rq = i915_request_create(ce);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			break;
+		}
+
+		i915_request_get(rq);
+		i915_request_add(rq);
+
+		err = 0;
+		if (i915_request_wait(rq, 0, HZ) < 0)
+			err = -ETIME;
+		i915_request_put(rq);
+		if (err)
+			break;
+
+		count++;
+	} while (!__igt_timeout(end_time, NULL));
+
+	if (busy) {
+		ktime_t now;
+
+		p->busy = ktime_sub(intel_engine_get_busy_time(engine, &now),
+				    p->busy);
+		p->time = ktime_sub(now, p->time);
+	} else {
+		p->time = ktime_sub(ktime_get(), p->time);
+	}
+
+	err = switch_to_kernel_sync(ce, err);
+	p->runtime = intel_context_get_total_runtime_ns(ce);
+	p->count = count;
+
+	intel_context_unpin(ce);
+	intel_context_put(ce);
+	thread->result = err;
+}
+
+static void p_sync1(struct kthread_work *work)
+{
+	struct p_thread *thread = container_of(work, typeof(*thread), work);
+	struct perf_stats *p = &thread->p;
+	struct intel_engine_cs *engine = p->engine;
+	struct i915_request *prev = NULL;
+	struct intel_context *ce;
+	IGT_TIMEOUT(end_time);
+	unsigned long count;
+	bool busy;
+	int err = 0;
+
+	ce = intel_context_create(engine);
+	if (IS_ERR(ce)) {
+		thread->result = PTR_ERR(ce);
+		return;
+	}
+
+	err = intel_context_pin(ce);
+	if (err) {
+		intel_context_put(ce);
+		thread->result = err;
+		return;
+	}
+
+	if (intel_engine_supports_stats(engine)) {
+		p->busy = intel_engine_get_busy_time(engine, &p->time);
+		busy = true;
+	} else {
+		p->time = ktime_get();
+		busy = false;
+	}
+
+	count = 0;
+	do {
+		struct i915_request *rq;
+
+		rq = i915_request_create(ce);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			break;
+		}
+
+		i915_request_get(rq);
+		i915_request_add(rq);
+
+		err = 0;
+		if (prev && i915_request_wait(prev, 0, HZ) < 0)
+			err = -ETIME;
+		i915_request_put(prev);
+		prev = rq;
+		if (err)
+			break;
+
+		count++;
+	} while (!__igt_timeout(end_time, NULL));
+	i915_request_put(prev);
+
+	if (busy) {
+		ktime_t now;
+
+		p->busy = ktime_sub(intel_engine_get_busy_time(engine, &now),
+				    p->busy);
+		p->time = ktime_sub(now, p->time);
+	} else {
+		p->time = ktime_sub(ktime_get(), p->time);
+	}
+
+	err = switch_to_kernel_sync(ce, err);
+	p->runtime = intel_context_get_total_runtime_ns(ce);
+	p->count = count;
+
+	intel_context_unpin(ce);
+	intel_context_put(ce);
+	thread->result = err;
+}
+
+static void p_many(struct kthread_work *work)
+{
+	struct p_thread *thread = container_of(work, typeof(*thread), work);
+	struct perf_stats *p = &thread->p;
+	struct intel_engine_cs *engine = p->engine;
+	struct intel_context *ce;
+	IGT_TIMEOUT(end_time);
+	unsigned long count;
+	int err = 0;
+	bool busy;
+
+	ce = intel_context_create(engine);
+	if (IS_ERR(ce)) {
+		thread->result = PTR_ERR(ce);
+		return;
+	}
+
+	err = intel_context_pin(ce);
+	if (err) {
+		intel_context_put(ce);
+		thread->result = err;
+		return;
+	}
+
+	if (intel_engine_supports_stats(engine)) {
+		p->busy = intel_engine_get_busy_time(engine, &p->time);
+		busy = true;
+	} else {
+		p->time = ktime_get();
+		busy = false;
+	}
+
+	count = 0;
+	do {
+		struct i915_request *rq;
+
+		rq = i915_request_create(ce);
+		if (IS_ERR(rq)) {
+			err = PTR_ERR(rq);
+			break;
+		}
+
+		i915_request_add(rq);
+		count++;
+	} while (!__igt_timeout(end_time, NULL));
+
+	if (busy) {
+		ktime_t now;
+
+		p->busy = ktime_sub(intel_engine_get_busy_time(engine, &now),
+				    p->busy);
+		p->time = ktime_sub(now, p->time);
+	} else {
+		p->time = ktime_sub(ktime_get(), p->time);
+	}
+
+	err = switch_to_kernel_sync(ce, err);
+	p->runtime = intel_context_get_total_runtime_ns(ce);
+	p->count = count;
+
+	intel_context_unpin(ce);
+	intel_context_put(ce);
+	thread->result = err;
+}
+
+static int perf_parallel_engines(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	static void (* const func[])(struct kthread_work *) = {
+		p_sync0,
+		p_sync1,
+		p_many,
+		NULL,
+	};
+	const unsigned int nengines = num_uabi_engines(i915);
+	void (* const *fn)(struct kthread_work *);
+	struct intel_engine_cs *engine;
+	struct pm_qos_request qos;
+	struct p_thread *engines;
+	int err = 0;
+
+	engines = kcalloc(nengines, sizeof(*engines), GFP_KERNEL);
+	if (!engines)
+		return -ENOMEM;
+
+	cpu_latency_qos_add_request(&qos, 0);
+
+	for (fn = func; *fn; fn++) {
+		char name[KSYM_NAME_LEN];
+		struct igt_live_test t;
+		unsigned int idx;
+
+		snprintf(name, sizeof(name), "%ps", *fn);
+		err = igt_live_test_begin(&t, i915, __func__, name);
+		if (err)
+			break;
+
+		atomic_set(&i915->selftest.counter, nengines);
+
+		idx = 0;
+		for_each_uabi_engine(engine, i915) {
+			struct kthread_worker *worker;
+
+			intel_engine_pm_get(engine);
+
+			memset(&engines[idx].p, 0, sizeof(engines[idx].p));
+
+			worker = kthread_create_worker(0, "igt:%s",
+						       engine->name);
+			if (IS_ERR(worker)) {
+				err = PTR_ERR(worker);
+				intel_engine_pm_put(engine);
+				break;
+			}
+			engines[idx].worker = worker;
+			engines[idx].result = 0;
+			engines[idx].p.engine = engine;
+			engines[idx].engine = engine;
+
+			kthread_init_work(&engines[idx].work, *fn);
+			kthread_queue_work(worker, &engines[idx].work);
+			idx++;
+		}
+
+		idx = 0;
+		for_each_uabi_engine(engine, i915) {
+			int status;
+
+			if (!engines[idx].worker)
+				break;
+
+			kthread_flush_work(&engines[idx].work);
+			status = READ_ONCE(engines[idx].result);
+			if (status && !err)
+				err = status;
+
+			intel_engine_pm_put(engine);
+
+			kthread_destroy_worker(engines[idx].worker);
+			idx++;
+		}
+
+		if (igt_live_test_end(&t))
+			err = -EIO;
+		if (err)
+			break;
+
+		idx = 0;
+		for_each_uabi_engine(engine, i915) {
+			struct perf_stats *p = &engines[idx].p;
+			u64 busy = 100 * ktime_to_ns(p->busy);
+			u64 dt = ktime_to_ns(p->time);
+			int integer, decimal;
+
+			if (dt) {
+				integer = div64_u64(busy, dt);
+				busy -= integer * dt;
+				decimal = div64_u64(100 * busy, dt);
+			} else {
+				integer = 0;
+				decimal = 0;
+			}
+
+			GEM_BUG_ON(engine != p->engine);
+			pr_info("%s %5s: { count:%lu, busy:%d.%02d%%, runtime:%lldms, walltime:%lldms }\n",
+				name, engine->name, p->count, integer, decimal,
+				div_u64(p->runtime, 1000 * 1000),
+				div_u64(ktime_to_ns(p->time), 1000 * 1000));
+			idx++;
+		}
+	}
+
+	cpu_latency_qos_remove_request(&qos);
+	kfree(engines);
+	return err;
+}
+
+int i915_request_perf_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(perf_request_latency),
+		SUBTEST(perf_series_engines),
+		SUBTEST(perf_parallel_engines),
+	};
+
+	if (intel_gt_is_wedged(to_gt(i915)))
+		return 0;
+
+	return i915_subtests(tests, i915);
+}
diff --git a/drivers/gpu/drm/i915/selftests/i915_selftest.c b/drivers/gpu/drm/i915/selftests/i915_selftest.c
new file mode 100644
index 0000000000..ee79e0809a
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_selftest.c
@@ -0,0 +1,471 @@
+/*
+ * 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 <linux/random.h>
+
+#include "gt/intel_gt_pm.h"
+#include "gt/uc/intel_gsc_fw.h"
+
+#include "i915_driver.h"
+#include "i915_drv.h"
+#include "i915_selftest.h"
+
+#include "igt_flush_test.h"
+
+struct i915_selftest i915_selftest __read_mostly = {
+	.timeout_ms = 500,
+};
+
+int i915_mock_sanitycheck(void)
+{
+	pr_info(DRIVER_NAME ": %s() - ok!\n", __func__);
+	return 0;
+}
+
+int i915_live_sanitycheck(struct drm_i915_private *i915)
+{
+	pr_info("%s: %s() - ok!\n", i915->drm.driver->name, __func__);
+	return 0;
+}
+
+enum {
+#define selftest(name, func) mock_##name,
+#include "i915_mock_selftests.h"
+#undef selftest
+};
+
+enum {
+#define selftest(name, func) live_##name,
+#include "i915_live_selftests.h"
+#undef selftest
+};
+
+enum {
+#define selftest(name, func) perf_##name,
+#include "i915_perf_selftests.h"
+#undef selftest
+};
+
+struct selftest {
+	bool enabled;
+	const char *name;
+	union {
+		int (*mock)(void);
+		int (*live)(struct drm_i915_private *);
+	};
+};
+
+#define selftest(n, f) [mock_##n] = { .name = #n, { .mock = f } },
+static struct selftest mock_selftests[] = {
+#include "i915_mock_selftests.h"
+};
+#undef selftest
+
+#define selftest(n, f) [live_##n] = { .name = #n, { .live = f } },
+static struct selftest live_selftests[] = {
+#include "i915_live_selftests.h"
+};
+#undef selftest
+
+#define selftest(n, f) [perf_##n] = { .name = #n, { .live = f } },
+static struct selftest perf_selftests[] = {
+#include "i915_perf_selftests.h"
+};
+#undef selftest
+
+/* Embed the line number into the parameter name so that we can order tests */
+#define selftest(n, func) selftest_0(n, func, param(n))
+#define param(n) __PASTE(igt__, __PASTE(__LINE__, __mock_##n))
+#define selftest_0(n, func, id) \
+module_param_named(id, mock_selftests[mock_##n].enabled, bool, 0400);
+#include "i915_mock_selftests.h"
+#undef selftest_0
+#undef param
+
+#define param(n) __PASTE(igt__, __PASTE(__LINE__, __live_##n))
+#define selftest_0(n, func, id) \
+module_param_named(id, live_selftests[live_##n].enabled, bool, 0400);
+#include "i915_live_selftests.h"
+#undef selftest_0
+#undef param
+
+#define param(n) __PASTE(igt__, __PASTE(__LINE__, __perf_##n))
+#define selftest_0(n, func, id) \
+module_param_named(id, perf_selftests[perf_##n].enabled, bool, 0400);
+#include "i915_perf_selftests.h"
+#undef selftest_0
+#undef param
+#undef selftest
+
+static void set_default_test_all(struct selftest *st, unsigned int count)
+{
+	unsigned int i;
+
+	for (i = 0; i < count; i++)
+		if (st[i].enabled)
+			return;
+
+	for (i = 0; i < count; i++)
+		st[i].enabled = true;
+}
+
+static bool
+__gsc_proxy_init_progressing(struct intel_gsc_uc *gsc)
+{
+	return intel_gsc_uc_fw_proxy_get_status(gsc) == -EAGAIN;
+}
+
+static void
+__wait_gsc_proxy_completed(struct drm_i915_private *i915)
+{
+	bool need_to_wait = (IS_ENABLED(CONFIG_INTEL_MEI_GSC_PROXY) &&
+			     i915->media_gt &&
+			     HAS_ENGINE(i915->media_gt, GSC0) &&
+			     intel_uc_fw_is_loadable(&i915->media_gt->uc.gsc.fw));
+	/*
+	 * The gsc proxy component depends on the kernel component driver load ordering
+	 * and in corner cases (the first time after an IFWI flash), init-completion
+	 * firmware flows take longer.
+	 */
+	unsigned long timeout_ms = 8000;
+
+	if (need_to_wait && wait_for(!__gsc_proxy_init_progressing(&i915->media_gt->uc.gsc),
+				     timeout_ms))
+		pr_warn(DRIVER_NAME "Timed out waiting for gsc_proxy_completion!\n");
+}
+
+static int __run_selftests(const char *name,
+			   struct selftest *st,
+			   unsigned int count,
+			   void *data)
+{
+	int err = 0;
+
+	while (!i915_selftest.random_seed)
+		i915_selftest.random_seed = get_random_u32();
+
+	i915_selftest.timeout_jiffies =
+		i915_selftest.timeout_ms ?
+		msecs_to_jiffies_timeout(i915_selftest.timeout_ms) :
+		MAX_SCHEDULE_TIMEOUT;
+
+	set_default_test_all(st, count);
+
+	pr_info(DRIVER_NAME ": Performing %s selftests with st_random_seed=0x%x st_timeout=%u\n",
+		name, i915_selftest.random_seed, i915_selftest.timeout_ms);
+
+	/* Tests are listed in order in i915_*_selftests.h */
+	for (; count--; st++) {
+		if (!st->enabled)
+			continue;
+
+		cond_resched();
+		if (signal_pending(current))
+			return -EINTR;
+
+		pr_info(DRIVER_NAME ": Running %s\n", st->name);
+		if (data)
+			err = st->live(data);
+		else
+			err = st->mock();
+		if (err == -EINTR && !signal_pending(current))
+			err = 0;
+		if (err)
+			break;
+	}
+
+	if (WARN(err > 0 || err == -ENOTTY,
+		 "%s returned %d, conflicting with selftest's magic values!\n",
+		 st->name, err))
+		err = -1;
+
+	return err;
+}
+
+#define run_selftests(x, data) \
+	__run_selftests(#x, x##_selftests, ARRAY_SIZE(x##_selftests), data)
+
+int i915_mock_selftests(void)
+{
+	int err;
+
+	if (!i915_selftest.mock)
+		return 0;
+
+	err = run_selftests(mock, NULL);
+	if (err) {
+		i915_selftest.mock = err;
+		return 1;
+	}
+
+	if (i915_selftest.mock < 0) {
+		i915_selftest.mock = -ENOTTY;
+		return 1;
+	}
+
+	return 0;
+}
+
+int i915_live_selftests(struct pci_dev *pdev)
+{
+	int err;
+
+	if (!i915_selftest.live)
+		return 0;
+
+	__wait_gsc_proxy_completed(pdev_to_i915(pdev));
+
+	err = run_selftests(live, pdev_to_i915(pdev));
+	if (err) {
+		i915_selftest.live = err;
+		return err;
+	}
+
+	if (i915_selftest.live < 0) {
+		i915_selftest.live = -ENOTTY;
+		return 1;
+	}
+
+	return 0;
+}
+
+int i915_perf_selftests(struct pci_dev *pdev)
+{
+	int err;
+
+	if (!i915_selftest.perf)
+		return 0;
+
+	__wait_gsc_proxy_completed(pdev_to_i915(pdev));
+
+	err = run_selftests(perf, pdev_to_i915(pdev));
+	if (err) {
+		i915_selftest.perf = err;
+		return err;
+	}
+
+	if (i915_selftest.perf < 0) {
+		i915_selftest.perf = -ENOTTY;
+		return 1;
+	}
+
+	return 0;
+}
+
+static bool apply_subtest_filter(const char *caller, const char *name)
+{
+	char *filter, *sep, *tok;
+	bool result = true;
+
+	filter = kstrdup(i915_selftest.filter, GFP_KERNEL);
+	for (sep = filter; (tok = strsep(&sep, ","));) {
+		bool allow = true;
+		char *sl;
+
+		if (*tok == '!') {
+			allow = false;
+			tok++;
+		}
+
+		if (*tok == '\0')
+			continue;
+
+		sl = strchr(tok, '/');
+		if (sl) {
+			*sl++ = '\0';
+			if (strcmp(tok, caller)) {
+				if (allow)
+					result = false;
+				continue;
+			}
+			tok = sl;
+		}
+
+		if (strcmp(tok, name)) {
+			if (allow)
+				result = false;
+			continue;
+		}
+
+		result = allow;
+		break;
+	}
+	kfree(filter);
+
+	return result;
+}
+
+int __i915_nop_setup(void *data)
+{
+	return 0;
+}
+
+int __i915_nop_teardown(int err, void *data)
+{
+	return err;
+}
+
+int __i915_live_setup(void *data)
+{
+	struct drm_i915_private *i915 = data;
+
+	/* The selftests expect an idle system */
+	if (intel_gt_pm_wait_for_idle(to_gt(i915)))
+		return -EIO;
+
+	return intel_gt_terminally_wedged(to_gt(i915));
+}
+
+int __i915_live_teardown(int err, void *data)
+{
+	struct drm_i915_private *i915 = data;
+
+	if (igt_flush_test(i915))
+		err = -EIO;
+
+	i915_gem_drain_freed_objects(i915);
+
+	return err;
+}
+
+int __intel_gt_live_setup(void *data)
+{
+	struct intel_gt *gt = data;
+
+	/* The selftests expect an idle system */
+	if (intel_gt_pm_wait_for_idle(gt))
+		return -EIO;
+
+	return intel_gt_terminally_wedged(gt);
+}
+
+int __intel_gt_live_teardown(int err, void *data)
+{
+	struct intel_gt *gt = data;
+
+	if (igt_flush_test(gt->i915))
+		err = -EIO;
+
+	i915_gem_drain_freed_objects(gt->i915);
+
+	return err;
+}
+
+int __i915_subtests(const char *caller,
+		    int (*setup)(void *data),
+		    int (*teardown)(int err, void *data),
+		    const struct i915_subtest *st,
+		    unsigned int count,
+		    void *data)
+{
+	int err;
+
+	for (; count--; st++) {
+		cond_resched();
+		if (signal_pending(current))
+			return -EINTR;
+
+		if (!apply_subtest_filter(caller, st->name))
+			continue;
+
+		err = setup(data);
+		if (err) {
+			pr_err(DRIVER_NAME "/%s: setup failed for %s\n",
+			       caller, st->name);
+			return err;
+		}
+
+		pr_info(DRIVER_NAME ": Running %s/%s\n", caller, st->name);
+		GEM_TRACE("Running %s/%s\n", caller, st->name);
+
+		err = teardown(st->func(data), data);
+		if (err && err != -EINTR) {
+			pr_err(DRIVER_NAME "/%s: %s failed with error %d\n",
+			       caller, st->name, err);
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+bool __igt_timeout(unsigned long timeout, const char *fmt, ...)
+{
+	va_list va;
+
+	if (!signal_pending(current)) {
+		cond_resched();
+		if (time_before(jiffies, timeout))
+			return false;
+	}
+
+	if (fmt) {
+		va_start(va, fmt);
+		vprintk(fmt, va);
+		va_end(va);
+	}
+
+	return true;
+}
+
+void igt_hexdump(const void *buf, size_t len)
+{
+	const size_t rowsize = 8 * sizeof(u32);
+	const void *prev = NULL;
+	bool skip = false;
+	size_t pos;
+
+	for (pos = 0; pos < len; pos += rowsize) {
+		char line[128];
+
+		if (prev && !memcmp(prev, buf + pos, rowsize)) {
+			if (!skip) {
+				pr_info("*\n");
+				skip = true;
+			}
+			continue;
+		}
+
+		WARN_ON_ONCE(hex_dump_to_buffer(buf + pos, len - pos,
+						rowsize, sizeof(u32),
+						line, sizeof(line),
+						false) >= sizeof(line));
+		pr_info("[%04zx] %s\n", pos, line);
+
+		prev = buf + pos;
+		skip = false;
+	}
+}
+
+module_param_named(st_random_seed, i915_selftest.random_seed, uint, 0400);
+module_param_named(st_timeout, i915_selftest.timeout_ms, uint, 0400);
+module_param_named(st_filter, i915_selftest.filter, charp, 0400);
+
+module_param_named_unsafe(mock_selftests, i915_selftest.mock, int, 0400);
+MODULE_PARM_DESC(mock_selftests, "Run selftests before loading, using mock hardware (0:disabled [default], 1:run tests then load driver, -1:run tests then leave dummy module)");
+
+module_param_named_unsafe(live_selftests, i915_selftest.live, int, 0400);
+MODULE_PARM_DESC(live_selftests, "Run selftests after driver initialisation on the live system (0:disabled [default], 1:run tests then continue, -1:run tests then exit module)");
+
+module_param_named_unsafe(perf_selftests, i915_selftest.perf, int, 0400);
+MODULE_PARM_DESC(perf_selftests, "Run performance orientated selftests after driver initialisation on the live system (0:disabled [default], 1:run tests then continue, -1:run tests then exit module)");
diff --git a/drivers/gpu/drm/i915/selftests/i915_sw_fence.c b/drivers/gpu/drm/i915/selftests/i915_sw_fence.c
new file mode 100644
index 0000000000..8f5ce71fa4
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_sw_fence.c
@@ -0,0 +1,767 @@
+/*
+ * Copyright © 2017 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 <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/prime_numbers.h>
+
+#include "../i915_selftest.h"
+
+static int
+fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
+{
+	switch (state) {
+	case FENCE_COMPLETE:
+		break;
+
+	case FENCE_FREE:
+		/* Leave the fence for the caller to free it after testing */
+		break;
+	}
+
+	return NOTIFY_DONE;
+}
+
+static struct i915_sw_fence *alloc_fence(void)
+{
+	struct i915_sw_fence *fence;
+
+	fence = kmalloc(sizeof(*fence), GFP_KERNEL);
+	if (!fence)
+		return NULL;
+
+	i915_sw_fence_init(fence, fence_notify);
+	return fence;
+}
+
+static void free_fence(struct i915_sw_fence *fence)
+{
+	i915_sw_fence_fini(fence);
+	kfree(fence);
+}
+
+static int __test_self(struct i915_sw_fence *fence)
+{
+	if (i915_sw_fence_done(fence))
+		return -EINVAL;
+
+	i915_sw_fence_commit(fence);
+	if (!i915_sw_fence_done(fence))
+		return -EINVAL;
+
+	i915_sw_fence_wait(fence);
+	if (!i915_sw_fence_done(fence))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int test_self(void *arg)
+{
+	struct i915_sw_fence *fence;
+	int ret;
+
+	/* Test i915_sw_fence signaling and completion testing */
+	fence = alloc_fence();
+	if (!fence)
+		return -ENOMEM;
+
+	ret = __test_self(fence);
+
+	free_fence(fence);
+	return ret;
+}
+
+static int test_dag(void *arg)
+{
+	struct i915_sw_fence *A, *B, *C;
+	int ret = -EINVAL;
+
+	/* Test detection of cycles within the i915_sw_fence graphs */
+	if (!IS_ENABLED(CONFIG_DRM_I915_SW_FENCE_CHECK_DAG))
+		return 0;
+
+	A = alloc_fence();
+	if (!A)
+		return -ENOMEM;
+
+	if (i915_sw_fence_await_sw_fence_gfp(A, A, GFP_KERNEL) != -EINVAL) {
+		pr_err("recursive cycle not detected (AA)\n");
+		goto err_A;
+	}
+
+	B = alloc_fence();
+	if (!B) {
+		ret = -ENOMEM;
+		goto err_A;
+	}
+
+	i915_sw_fence_await_sw_fence_gfp(A, B, GFP_KERNEL);
+	if (i915_sw_fence_await_sw_fence_gfp(B, A, GFP_KERNEL) != -EINVAL) {
+		pr_err("single depth cycle not detected (BAB)\n");
+		goto err_B;
+	}
+
+	C = alloc_fence();
+	if (!C) {
+		ret = -ENOMEM;
+		goto err_B;
+	}
+
+	if (i915_sw_fence_await_sw_fence_gfp(B, C, GFP_KERNEL) == -EINVAL) {
+		pr_err("invalid cycle detected\n");
+		goto err_C;
+	}
+	if (i915_sw_fence_await_sw_fence_gfp(C, B, GFP_KERNEL) != -EINVAL) {
+		pr_err("single depth cycle not detected (CBC)\n");
+		goto err_C;
+	}
+	if (i915_sw_fence_await_sw_fence_gfp(C, A, GFP_KERNEL) != -EINVAL) {
+		pr_err("cycle not detected (BA, CB, AC)\n");
+		goto err_C;
+	}
+	if (i915_sw_fence_await_sw_fence_gfp(A, C, GFP_KERNEL) == -EINVAL) {
+		pr_err("invalid cycle detected\n");
+		goto err_C;
+	}
+
+	i915_sw_fence_commit(A);
+	i915_sw_fence_commit(B);
+	i915_sw_fence_commit(C);
+
+	ret = 0;
+	if (!i915_sw_fence_done(C)) {
+		pr_err("fence C not done\n");
+		ret = -EINVAL;
+	}
+	if (!i915_sw_fence_done(B)) {
+		pr_err("fence B not done\n");
+		ret = -EINVAL;
+	}
+	if (!i915_sw_fence_done(A)) {
+		pr_err("fence A not done\n");
+		ret = -EINVAL;
+	}
+err_C:
+	free_fence(C);
+err_B:
+	free_fence(B);
+err_A:
+	free_fence(A);
+	return ret;
+}
+
+static int test_AB(void *arg)
+{
+	struct i915_sw_fence *A, *B;
+	int ret;
+
+	/* Test i915_sw_fence (A) waiting on an event source (B) */
+	A = alloc_fence();
+	if (!A)
+		return -ENOMEM;
+	B = alloc_fence();
+	if (!B) {
+		ret = -ENOMEM;
+		goto err_A;
+	}
+
+	ret = i915_sw_fence_await_sw_fence_gfp(A, B, GFP_KERNEL);
+	if (ret < 0)
+		goto err_B;
+	if (ret == 0) {
+		pr_err("Incorrectly reported fence A was complete before await\n");
+		ret = -EINVAL;
+		goto err_B;
+	}
+
+	ret = -EINVAL;
+	i915_sw_fence_commit(A);
+	if (i915_sw_fence_done(A))
+		goto err_B;
+
+	i915_sw_fence_commit(B);
+	if (!i915_sw_fence_done(B)) {
+		pr_err("Fence B is not done\n");
+		goto err_B;
+	}
+
+	if (!i915_sw_fence_done(A)) {
+		pr_err("Fence A is not done\n");
+		goto err_B;
+	}
+
+	ret = 0;
+err_B:
+	free_fence(B);
+err_A:
+	free_fence(A);
+	return ret;
+}
+
+static int test_ABC(void *arg)
+{
+	struct i915_sw_fence *A, *B, *C;
+	int ret;
+
+	/* Test a chain of fences, A waits on B who waits on C */
+	A = alloc_fence();
+	if (!A)
+		return -ENOMEM;
+
+	B = alloc_fence();
+	if (!B) {
+		ret = -ENOMEM;
+		goto err_A;
+	}
+
+	C = alloc_fence();
+	if (!C) {
+		ret = -ENOMEM;
+		goto err_B;
+	}
+
+	ret = i915_sw_fence_await_sw_fence_gfp(A, B, GFP_KERNEL);
+	if (ret < 0)
+		goto err_C;
+	if (ret == 0) {
+		pr_err("Incorrectly reported fence B was complete before await\n");
+		goto err_C;
+	}
+
+	ret = i915_sw_fence_await_sw_fence_gfp(B, C, GFP_KERNEL);
+	if (ret < 0)
+		goto err_C;
+	if (ret == 0) {
+		pr_err("Incorrectly reported fence C was complete before await\n");
+		goto err_C;
+	}
+
+	ret = -EINVAL;
+	i915_sw_fence_commit(A);
+	if (i915_sw_fence_done(A)) {
+		pr_err("Fence A completed early\n");
+		goto err_C;
+	}
+
+	i915_sw_fence_commit(B);
+	if (i915_sw_fence_done(B)) {
+		pr_err("Fence B completed early\n");
+		goto err_C;
+	}
+
+	if (i915_sw_fence_done(A)) {
+		pr_err("Fence A completed early (after signaling B)\n");
+		goto err_C;
+	}
+
+	i915_sw_fence_commit(C);
+
+	ret = 0;
+	if (!i915_sw_fence_done(C)) {
+		pr_err("Fence C not done\n");
+		ret = -EINVAL;
+	}
+	if (!i915_sw_fence_done(B)) {
+		pr_err("Fence B not done\n");
+		ret = -EINVAL;
+	}
+	if (!i915_sw_fence_done(A)) {
+		pr_err("Fence A not done\n");
+		ret = -EINVAL;
+	}
+err_C:
+	free_fence(C);
+err_B:
+	free_fence(B);
+err_A:
+	free_fence(A);
+	return ret;
+}
+
+static int test_AB_C(void *arg)
+{
+	struct i915_sw_fence *A, *B, *C;
+	int ret = -EINVAL;
+
+	/* Test multiple fences (AB) waiting on a single event (C) */
+	A = alloc_fence();
+	if (!A)
+		return -ENOMEM;
+
+	B = alloc_fence();
+	if (!B) {
+		ret = -ENOMEM;
+		goto err_A;
+	}
+
+	C = alloc_fence();
+	if (!C) {
+		ret = -ENOMEM;
+		goto err_B;
+	}
+
+	ret = i915_sw_fence_await_sw_fence_gfp(A, C, GFP_KERNEL);
+	if (ret < 0)
+		goto err_C;
+	if (ret == 0) {
+		ret = -EINVAL;
+		goto err_C;
+	}
+
+	ret = i915_sw_fence_await_sw_fence_gfp(B, C, GFP_KERNEL);
+	if (ret < 0)
+		goto err_C;
+	if (ret == 0) {
+		ret = -EINVAL;
+		goto err_C;
+	}
+
+	i915_sw_fence_commit(A);
+	i915_sw_fence_commit(B);
+
+	ret = 0;
+	if (i915_sw_fence_done(A)) {
+		pr_err("Fence A completed early\n");
+		ret = -EINVAL;
+	}
+
+	if (i915_sw_fence_done(B)) {
+		pr_err("Fence B completed early\n");
+		ret = -EINVAL;
+	}
+
+	i915_sw_fence_commit(C);
+	if (!i915_sw_fence_done(C)) {
+		pr_err("Fence C not done\n");
+		ret = -EINVAL;
+	}
+
+	if (!i915_sw_fence_done(B)) {
+		pr_err("Fence B not done\n");
+		ret = -EINVAL;
+	}
+
+	if (!i915_sw_fence_done(A)) {
+		pr_err("Fence A not done\n");
+		ret = -EINVAL;
+	}
+
+err_C:
+	free_fence(C);
+err_B:
+	free_fence(B);
+err_A:
+	free_fence(A);
+	return ret;
+}
+
+static int test_C_AB(void *arg)
+{
+	struct i915_sw_fence *A, *B, *C;
+	int ret;
+
+	/* Test multiple event sources (A,B) for a single fence (C) */
+	A = alloc_fence();
+	if (!A)
+		return -ENOMEM;
+
+	B = alloc_fence();
+	if (!B) {
+		ret = -ENOMEM;
+		goto err_A;
+	}
+
+	C = alloc_fence();
+	if (!C) {
+		ret = -ENOMEM;
+		goto err_B;
+	}
+
+	ret = i915_sw_fence_await_sw_fence_gfp(C, A, GFP_KERNEL);
+	if (ret < 0)
+		goto err_C;
+	if (ret == 0) {
+		ret = -EINVAL;
+		goto err_C;
+	}
+
+	ret = i915_sw_fence_await_sw_fence_gfp(C, B, GFP_KERNEL);
+	if (ret < 0)
+		goto err_C;
+	if (ret == 0) {
+		ret = -EINVAL;
+		goto err_C;
+	}
+
+	ret = 0;
+	i915_sw_fence_commit(C);
+	if (i915_sw_fence_done(C))
+		ret = -EINVAL;
+
+	i915_sw_fence_commit(A);
+	i915_sw_fence_commit(B);
+
+	if (!i915_sw_fence_done(A)) {
+		pr_err("Fence A not done\n");
+		ret = -EINVAL;
+	}
+
+	if (!i915_sw_fence_done(B)) {
+		pr_err("Fence B not done\n");
+		ret = -EINVAL;
+	}
+
+	if (!i915_sw_fence_done(C)) {
+		pr_err("Fence C not done\n");
+		ret = -EINVAL;
+	}
+
+err_C:
+	free_fence(C);
+err_B:
+	free_fence(B);
+err_A:
+	free_fence(A);
+	return ret;
+}
+
+static int test_chain(void *arg)
+{
+	int nfences = 4096;
+	struct i915_sw_fence **fences;
+	int ret, i;
+
+	/* Test a long chain of fences */
+	fences = kmalloc_array(nfences, sizeof(*fences), GFP_KERNEL);
+	if (!fences)
+		return -ENOMEM;
+
+	for (i = 0; i < nfences; i++) {
+		fences[i] = alloc_fence();
+		if (!fences[i]) {
+			nfences = i;
+			ret = -ENOMEM;
+			goto err;
+		}
+
+		if (i > 0) {
+			ret = i915_sw_fence_await_sw_fence_gfp(fences[i],
+							       fences[i - 1],
+							       GFP_KERNEL);
+			if (ret < 0) {
+				nfences = i + 1;
+				goto err;
+			}
+
+			i915_sw_fence_commit(fences[i]);
+		}
+	}
+
+	ret = 0;
+	for (i = nfences; --i; ) {
+		if (i915_sw_fence_done(fences[i])) {
+			if (ret == 0)
+				pr_err("Fence[%d] completed early\n", i);
+			ret = -EINVAL;
+		}
+	}
+	i915_sw_fence_commit(fences[0]);
+	for (i = 0; ret == 0 && i < nfences; i++) {
+		if (!i915_sw_fence_done(fences[i])) {
+			pr_err("Fence[%d] is not done\n", i);
+			ret = -EINVAL;
+		}
+	}
+
+err:
+	for (i = 0; i < nfences; i++)
+		free_fence(fences[i]);
+	kfree(fences);
+	return ret;
+}
+
+struct task_ipc {
+	struct work_struct work;
+	struct completion started;
+	struct i915_sw_fence *in, *out;
+	int value;
+};
+
+static void task_ipc(struct work_struct *work)
+{
+	struct task_ipc *ipc = container_of(work, typeof(*ipc), work);
+
+	complete(&ipc->started);
+
+	i915_sw_fence_wait(ipc->in);
+	smp_store_mb(ipc->value, 1);
+	i915_sw_fence_commit(ipc->out);
+}
+
+static int test_ipc(void *arg)
+{
+	struct task_ipc ipc;
+	struct workqueue_struct *wq;
+	int ret = 0;
+
+	wq = alloc_workqueue("i1915-selftest", 0, 0);
+	if (wq == NULL)
+		return -ENOMEM;
+
+	/* Test use of i915_sw_fence as an interprocess signaling mechanism */
+	ipc.in = alloc_fence();
+	if (!ipc.in) {
+		ret = -ENOMEM;
+		goto err_work;
+	}
+	ipc.out = alloc_fence();
+	if (!ipc.out) {
+		ret = -ENOMEM;
+		goto err_in;
+	}
+
+	/* use a completion to avoid chicken-and-egg testing */
+	init_completion(&ipc.started);
+
+	ipc.value = 0;
+	INIT_WORK_ONSTACK(&ipc.work, task_ipc);
+	queue_work(wq, &ipc.work);
+
+	wait_for_completion(&ipc.started);
+
+	usleep_range(1000, 2000);
+	if (READ_ONCE(ipc.value)) {
+		pr_err("worker updated value before i915_sw_fence was signaled\n");
+		ret = -EINVAL;
+	}
+
+	i915_sw_fence_commit(ipc.in);
+	i915_sw_fence_wait(ipc.out);
+
+	if (!READ_ONCE(ipc.value)) {
+		pr_err("worker signaled i915_sw_fence before value was posted\n");
+		ret = -EINVAL;
+	}
+
+	flush_work(&ipc.work);
+	destroy_work_on_stack(&ipc.work);
+	free_fence(ipc.out);
+err_in:
+	free_fence(ipc.in);
+err_work:
+	destroy_workqueue(wq);
+
+	return ret;
+}
+
+static int test_timer(void *arg)
+{
+	unsigned long target, delay;
+	struct timed_fence tf;
+
+	preempt_disable();
+	timed_fence_init(&tf, target = jiffies);
+	if (!i915_sw_fence_done(&tf.fence)) {
+		pr_err("Fence with immediate expiration not signaled\n");
+		goto err;
+	}
+	preempt_enable();
+	timed_fence_fini(&tf);
+
+	for_each_prime_number(delay, i915_selftest.timeout_jiffies/2) {
+		preempt_disable();
+		timed_fence_init(&tf, target = jiffies + delay);
+		if (i915_sw_fence_done(&tf.fence)) {
+			pr_err("Fence with future expiration (%lu jiffies) already signaled\n", delay);
+			goto err;
+		}
+		preempt_enable();
+
+		i915_sw_fence_wait(&tf.fence);
+
+		preempt_disable();
+		if (!i915_sw_fence_done(&tf.fence)) {
+			pr_err("Fence not signaled after wait\n");
+			goto err;
+		}
+		if (time_before(jiffies, target)) {
+			pr_err("Fence signaled too early, target=%lu, now=%lu\n",
+			       target, jiffies);
+			goto err;
+		}
+		preempt_enable();
+		timed_fence_fini(&tf);
+	}
+
+	return 0;
+
+err:
+	preempt_enable();
+	timed_fence_fini(&tf);
+	return -EINVAL;
+}
+
+static const char *mock_name(struct dma_fence *fence)
+{
+	return "mock";
+}
+
+static const struct dma_fence_ops mock_fence_ops = {
+	.get_driver_name = mock_name,
+	.get_timeline_name = mock_name,
+};
+
+static DEFINE_SPINLOCK(mock_fence_lock);
+
+static struct dma_fence *alloc_dma_fence(void)
+{
+	struct dma_fence *dma;
+
+	dma = kmalloc(sizeof(*dma), GFP_KERNEL);
+	if (dma)
+		dma_fence_init(dma, &mock_fence_ops, &mock_fence_lock, 0, 0);
+
+	return dma;
+}
+
+static struct i915_sw_fence *
+wrap_dma_fence(struct dma_fence *dma, unsigned long delay)
+{
+	struct i915_sw_fence *fence;
+	int err;
+
+	fence = alloc_fence();
+	if (!fence)
+		return ERR_PTR(-ENOMEM);
+
+	err = i915_sw_fence_await_dma_fence(fence, dma, delay, GFP_NOWAIT);
+	i915_sw_fence_commit(fence);
+	if (err < 0) {
+		free_fence(fence);
+		return ERR_PTR(err);
+	}
+
+	return fence;
+}
+
+static int test_dma_fence(void *arg)
+{
+	struct i915_sw_fence *timeout = NULL, *not = NULL;
+	unsigned long delay = i915_selftest.timeout_jiffies;
+	unsigned long end, sleep;
+	struct dma_fence *dma;
+	int err;
+
+	dma = alloc_dma_fence();
+	if (!dma)
+		return -ENOMEM;
+
+	timeout = wrap_dma_fence(dma, delay);
+	if (IS_ERR(timeout)) {
+		err = PTR_ERR(timeout);
+		goto err;
+	}
+
+	not = wrap_dma_fence(dma, 0);
+	if (IS_ERR(not)) {
+		err = PTR_ERR(not);
+		goto err;
+	}
+
+	err = -EINVAL;
+	if (i915_sw_fence_done(timeout) || i915_sw_fence_done(not)) {
+		pr_err("Fences immediately signaled\n");
+		goto err;
+	}
+
+	/* We round the timeout for the fence up to the next second */
+	end = round_jiffies_up(jiffies + delay);
+
+	sleep = jiffies_to_usecs(delay) / 3;
+	usleep_range(sleep, 2 * sleep);
+	if (time_after(jiffies, end)) {
+		pr_debug("Slept too long, delay=%lu, (target=%lu, now=%lu) skipping\n",
+			 delay, end, jiffies);
+		goto skip;
+	}
+
+	if (i915_sw_fence_done(timeout) || i915_sw_fence_done(not)) {
+		pr_err("Fences signaled too early\n");
+		goto err;
+	}
+
+	if (!wait_event_timeout(timeout->wait,
+				i915_sw_fence_done(timeout),
+				2 * (end - jiffies) + 1)) {
+		pr_err("Timeout fence unsignaled!\n");
+		goto err;
+	}
+
+	if (i915_sw_fence_done(not)) {
+		pr_err("No timeout fence signaled!\n");
+		goto err;
+	}
+
+skip:
+	dma_fence_signal(dma);
+
+	if (!i915_sw_fence_done(timeout) || !i915_sw_fence_done(not)) {
+		pr_err("Fences unsignaled\n");
+		goto err;
+	}
+
+	free_fence(not);
+	free_fence(timeout);
+	dma_fence_put(dma);
+
+	return 0;
+
+err:
+	dma_fence_signal(dma);
+	if (!IS_ERR_OR_NULL(timeout))
+		free_fence(timeout);
+	if (!IS_ERR_OR_NULL(not))
+		free_fence(not);
+	dma_fence_put(dma);
+	return err;
+}
+
+int i915_sw_fence_mock_selftests(void)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(test_self),
+		SUBTEST(test_dag),
+		SUBTEST(test_AB),
+		SUBTEST(test_ABC),
+		SUBTEST(test_AB_C),
+		SUBTEST(test_C_AB),
+		SUBTEST(test_chain),
+		SUBTEST(test_ipc),
+		SUBTEST(test_timer),
+		SUBTEST(test_dma_fence),
+	};
+
+	return i915_subtests(tests, NULL);
+}
diff --git a/drivers/gpu/drm/i915/selftests/i915_syncmap.c b/drivers/gpu/drm/i915/selftests/i915_syncmap.c
new file mode 100644
index 0000000000..47f4ae18a1
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_syncmap.c
@@ -0,0 +1,616 @@
+/*
+ * Copyright © 2017 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 "i915_random.h"
+
+static char *
+__sync_print(struct i915_syncmap *p,
+	     char *buf, unsigned long *sz,
+	     unsigned int depth,
+	     unsigned int last,
+	     unsigned int idx)
+{
+	unsigned long len;
+	unsigned int i, X;
+
+	if (depth) {
+		unsigned int d;
+
+		for (d = 0; d < depth - 1; d++) {
+			if (last & BIT(depth - d - 1))
+				len = scnprintf(buf, *sz, "|   ");
+			else
+				len = scnprintf(buf, *sz, "    ");
+			buf += len;
+			*sz -= len;
+		}
+		len = scnprintf(buf, *sz, "%x-> ", idx);
+		buf += len;
+		*sz -= len;
+	}
+
+	/* We mark bits after the prefix as "X" */
+	len = scnprintf(buf, *sz, "0x%016llx", p->prefix << p->height << SHIFT);
+	buf += len;
+	*sz -= len;
+	X = (p->height + SHIFT) / 4;
+	scnprintf(buf - X, *sz + X, "%*s", X, "XXXXXXXXXXXXXXXXX");
+
+	if (!p->height) {
+		for_each_set_bit(i, (unsigned long *)&p->bitmap, KSYNCMAP) {
+			len = scnprintf(buf, *sz, " %x:%x,",
+					i, __sync_seqno(p)[i]);
+			buf += len;
+			*sz -= len;
+		}
+		buf -= 1;
+		*sz += 1;
+	}
+
+	len = scnprintf(buf, *sz, "\n");
+	buf += len;
+	*sz -= len;
+
+	if (p->height) {
+		for_each_set_bit(i, (unsigned long *)&p->bitmap, KSYNCMAP) {
+			buf = __sync_print(__sync_child(p)[i], buf, sz,
+					   depth + 1,
+					   last << 1 | !!(p->bitmap >> (i + 1)),
+					   i);
+		}
+	}
+
+	return buf;
+}
+
+static bool
+i915_syncmap_print_to_buf(struct i915_syncmap *p, char *buf, unsigned long sz)
+{
+	if (!p)
+		return false;
+
+	while (p->parent)
+		p = p->parent;
+
+	__sync_print(p, buf, &sz, 0, 1, 0);
+	return true;
+}
+
+static int check_syncmap_free(struct i915_syncmap **sync)
+{
+	i915_syncmap_free(sync);
+	if (*sync) {
+		pr_err("sync not cleared after free\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int dump_syncmap(struct i915_syncmap *sync, int err)
+{
+	char *buf;
+
+	if (!err)
+		return check_syncmap_free(&sync);
+
+	buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
+	if (!buf)
+		goto skip;
+
+	if (i915_syncmap_print_to_buf(sync, buf, PAGE_SIZE))
+		pr_err("%s", buf);
+
+	kfree(buf);
+
+skip:
+	i915_syncmap_free(&sync);
+	return err;
+}
+
+static int igt_syncmap_init(void *arg)
+{
+	struct i915_syncmap *sync = (void *)~0ul;
+
+	/*
+	 * Cursory check that we can initialise a random pointer and transform
+	 * it into the root pointer of a syncmap.
+	 */
+
+	i915_syncmap_init(&sync);
+	return check_syncmap_free(&sync);
+}
+
+static int check_seqno(struct i915_syncmap *leaf, unsigned int idx, u32 seqno)
+{
+	if (leaf->height) {
+		pr_err("%s: not a leaf, height is %d\n",
+		       __func__, leaf->height);
+		return -EINVAL;
+	}
+
+	if (__sync_seqno(leaf)[idx] != seqno) {
+		pr_err("%s: seqno[%d], found %x, expected %x\n",
+		       __func__, idx, __sync_seqno(leaf)[idx], seqno);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int check_one(struct i915_syncmap **sync, u64 context, u32 seqno)
+{
+	int err;
+
+	err = i915_syncmap_set(sync, context, seqno);
+	if (err)
+		return err;
+
+	if ((*sync)->height) {
+		pr_err("Inserting first context=%llx did not return leaf (height=%d, prefix=%llx\n",
+		       context, (*sync)->height, (*sync)->prefix);
+		return -EINVAL;
+	}
+
+	if ((*sync)->parent) {
+		pr_err("Inserting first context=%llx created branches!\n",
+		       context);
+		return -EINVAL;
+	}
+
+	if (hweight32((*sync)->bitmap) != 1) {
+		pr_err("First bitmap does not contain a single entry, found %x (count=%d)!\n",
+		       (*sync)->bitmap, hweight32((*sync)->bitmap));
+		return -EINVAL;
+	}
+
+	err = check_seqno((*sync), ilog2((*sync)->bitmap), seqno);
+	if (err)
+		return err;
+
+	if (!i915_syncmap_is_later(sync, context, seqno)) {
+		pr_err("Lookup of first context=%llx/seqno=%x failed!\n",
+		       context, seqno);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int igt_syncmap_one(void *arg)
+{
+	I915_RND_STATE(prng);
+	IGT_TIMEOUT(end_time);
+	struct i915_syncmap *sync;
+	unsigned long max = 1;
+	int err;
+
+	/*
+	 * Check that inserting a new id, creates a leaf and only that leaf.
+	 */
+
+	i915_syncmap_init(&sync);
+
+	do {
+		u64 context = i915_prandom_u64_state(&prng);
+		unsigned long loop;
+
+		err = check_syncmap_free(&sync);
+		if (err)
+			goto out;
+
+		for (loop = 0; loop <= max; loop++) {
+			err = check_one(&sync, context,
+					prandom_u32_state(&prng));
+			if (err)
+				goto out;
+		}
+		max++;
+	} while (!__igt_timeout(end_time, NULL));
+	pr_debug("%s: Completed %lu single insertions\n",
+		 __func__, max * (max - 1) / 2);
+out:
+	return dump_syncmap(sync, err);
+}
+
+static int check_leaf(struct i915_syncmap **sync, u64 context, u32 seqno)
+{
+	int err;
+
+	err = i915_syncmap_set(sync, context, seqno);
+	if (err)
+		return err;
+
+	if ((*sync)->height) {
+		pr_err("Inserting context=%llx did not return leaf (height=%d, prefix=%llx\n",
+		       context, (*sync)->height, (*sync)->prefix);
+		return -EINVAL;
+	}
+
+	if (hweight32((*sync)->bitmap) != 1) {
+		pr_err("First entry into leaf (context=%llx) does not contain a single entry, found %x (count=%d)!\n",
+		       context, (*sync)->bitmap, hweight32((*sync)->bitmap));
+		return -EINVAL;
+	}
+
+	err = check_seqno((*sync), ilog2((*sync)->bitmap), seqno);
+	if (err)
+		return err;
+
+	if (!i915_syncmap_is_later(sync, context, seqno)) {
+		pr_err("Lookup of first entry context=%llx/seqno=%x failed!\n",
+		       context, seqno);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int igt_syncmap_join_above(void *arg)
+{
+	struct i915_syncmap *sync;
+	unsigned int pass, order;
+	int err;
+
+	i915_syncmap_init(&sync);
+
+	/*
+	 * When we have a new id that doesn't fit inside the existing tree,
+	 * we need to add a new layer above.
+	 *
+	 * 1: 0x00000001
+	 * 2: 0x00000010
+	 * 3: 0x00000100
+	 * 4: 0x00001000
+	 * ...
+	 * Each pass the common prefix shrinks and we have to insert a join.
+	 * Each join will only contain two branches, the latest of which
+	 * is always a leaf.
+	 *
+	 * If we then reuse the same set of contexts, we expect to build an
+	 * identical tree.
+	 */
+	for (pass = 0; pass < 3; pass++) {
+		for (order = 0; order < 64; order += SHIFT) {
+			u64 context = BIT_ULL(order);
+			struct i915_syncmap *join;
+
+			err = check_leaf(&sync, context, 0);
+			if (err)
+				goto out;
+
+			join = sync->parent;
+			if (!join) /* very first insert will have no parents */
+				continue;
+
+			if (!join->height) {
+				pr_err("Parent with no height!\n");
+				err = -EINVAL;
+				goto out;
+			}
+
+			if (hweight32(join->bitmap) != 2) {
+				pr_err("Join does not have 2 children: %x (%d)\n",
+				       join->bitmap, hweight32(join->bitmap));
+				err = -EINVAL;
+				goto out;
+			}
+
+			if (__sync_child(join)[__sync_branch_idx(join, context)] != sync) {
+				pr_err("Leaf misplaced in parent!\n");
+				err = -EINVAL;
+				goto out;
+			}
+		}
+	}
+out:
+	return dump_syncmap(sync, err);
+}
+
+static int igt_syncmap_join_below(void *arg)
+{
+	struct i915_syncmap *sync;
+	unsigned int step, order, idx;
+	int err = -ENODEV;
+
+	i915_syncmap_init(&sync);
+
+	/*
+	 * Check that we can split a compacted branch by replacing it with
+	 * a join.
+	 */
+	for (step = 0; step < KSYNCMAP; step++) {
+		for (order = 64 - SHIFT; order > 0; order -= SHIFT) {
+			u64 context = step * BIT_ULL(order);
+
+			err = i915_syncmap_set(&sync, context, 0);
+			if (err)
+				goto out;
+
+			if (sync->height) {
+				pr_err("Inserting context=%llx (order=%d, step=%d) did not return leaf (height=%d, prefix=%llx\n",
+				       context, order, step, sync->height, sync->prefix);
+				err = -EINVAL;
+				goto out;
+			}
+		}
+	}
+
+	for (step = 0; step < KSYNCMAP; step++) {
+		for (order = SHIFT; order < 64; order += SHIFT) {
+			u64 context = step * BIT_ULL(order);
+
+			if (!i915_syncmap_is_later(&sync, context, 0)) {
+				pr_err("1: context %llx (order=%d, step=%d) not found\n",
+				       context, order, step);
+				err = -EINVAL;
+				goto out;
+			}
+
+			for (idx = 1; idx < KSYNCMAP; idx++) {
+				if (i915_syncmap_is_later(&sync, context + idx, 0)) {
+					pr_err("1: context %llx (order=%d, step=%d) should not exist\n",
+					       context + idx, order, step);
+					err = -EINVAL;
+					goto out;
+				}
+			}
+		}
+	}
+
+	for (order = SHIFT; order < 64; order += SHIFT) {
+		for (step = 0; step < KSYNCMAP; step++) {
+			u64 context = step * BIT_ULL(order);
+
+			if (!i915_syncmap_is_later(&sync, context, 0)) {
+				pr_err("2: context %llx (order=%d, step=%d) not found\n",
+				       context, order, step);
+				err = -EINVAL;
+				goto out;
+			}
+		}
+	}
+
+out:
+	return dump_syncmap(sync, err);
+}
+
+static int igt_syncmap_neighbours(void *arg)
+{
+	I915_RND_STATE(prng);
+	IGT_TIMEOUT(end_time);
+	struct i915_syncmap *sync;
+	int err = -ENODEV;
+
+	/*
+	 * Each leaf holds KSYNCMAP seqno. Check that when we create KSYNCMAP
+	 * neighbouring ids, they all fit into the same leaf.
+	 */
+
+	i915_syncmap_init(&sync);
+	do {
+		u64 context = i915_prandom_u64_state(&prng) & ~MASK;
+		unsigned int idx;
+
+		if (i915_syncmap_is_later(&sync, context, 0)) /* Skip repeats */
+			continue;
+
+		for (idx = 0; idx < KSYNCMAP; idx++) {
+			err = i915_syncmap_set(&sync, context + idx, 0);
+			if (err)
+				goto out;
+
+			if (sync->height) {
+				pr_err("Inserting context=%llx did not return leaf (height=%d, prefix=%llx\n",
+				       context, sync->height, sync->prefix);
+				err = -EINVAL;
+				goto out;
+			}
+
+			if (sync->bitmap != BIT(idx + 1) - 1) {
+				pr_err("Inserting neighbouring context=0x%llx+%d, did not fit into the same leaf bitmap=%x (%d), expected %lx (%d)\n",
+				       context, idx,
+				       sync->bitmap, hweight32(sync->bitmap),
+				       BIT(idx + 1) - 1, idx + 1);
+				err = -EINVAL;
+				goto out;
+			}
+		}
+	} while (!__igt_timeout(end_time, NULL));
+out:
+	return dump_syncmap(sync, err);
+}
+
+static int igt_syncmap_compact(void *arg)
+{
+	struct i915_syncmap *sync;
+	unsigned int idx, order;
+	int err = -ENODEV;
+
+	i915_syncmap_init(&sync);
+
+	/*
+	 * The syncmap are "space efficient" compressed radix trees - any
+	 * branch with only one child is skipped and replaced by the child.
+	 *
+	 * If we construct a tree with ids that are neighbouring at a non-zero
+	 * height, we form a join but each child of that join is directly a
+	 * leaf holding the single id.
+	 */
+	for (order = SHIFT; order < 64; order += SHIFT) {
+		err = check_syncmap_free(&sync);
+		if (err)
+			goto out;
+
+		/* Create neighbours in the parent */
+		for (idx = 0; idx < KSYNCMAP; idx++) {
+			u64 context = idx * BIT_ULL(order) + idx;
+
+			err = i915_syncmap_set(&sync, context, 0);
+			if (err)
+				goto out;
+
+			if (sync->height) {
+				pr_err("Inserting context=%llx (order=%d, idx=%d) did not return leaf (height=%d, prefix=%llx\n",
+				       context, order, idx,
+				       sync->height, sync->prefix);
+				err = -EINVAL;
+				goto out;
+			}
+		}
+
+		sync = sync->parent;
+		if (sync->parent) {
+			pr_err("Parent (join) of last leaf was not the sync!\n");
+			err = -EINVAL;
+			goto out;
+		}
+
+		if (sync->height != order) {
+			pr_err("Join does not have the expected height, found %d, expected %d\n",
+			       sync->height, order);
+			err = -EINVAL;
+			goto out;
+		}
+
+		if (sync->bitmap != BIT(KSYNCMAP) - 1) {
+			pr_err("Join is not full!, found %x (%d) expected %lx (%d)\n",
+			       sync->bitmap, hweight32(sync->bitmap),
+			       BIT(KSYNCMAP) - 1, KSYNCMAP);
+			err = -EINVAL;
+			goto out;
+		}
+
+		/* Each of our children should be a leaf */
+		for (idx = 0; idx < KSYNCMAP; idx++) {
+			struct i915_syncmap *leaf = __sync_child(sync)[idx];
+
+			if (leaf->height) {
+				pr_err("Child %d is a not leaf!\n", idx);
+				err = -EINVAL;
+				goto out;
+			}
+
+			if (leaf->parent != sync) {
+				pr_err("Child %d is not attached to us!\n",
+				       idx);
+				err = -EINVAL;
+				goto out;
+			}
+
+			if (!is_power_of_2(leaf->bitmap)) {
+				pr_err("Child %d holds more than one id, found %x (%d)\n",
+				       idx, leaf->bitmap, hweight32(leaf->bitmap));
+				err = -EINVAL;
+				goto out;
+			}
+
+			if (leaf->bitmap != BIT(idx)) {
+				pr_err("Child %d has wrong seqno idx, found %d, expected %d\n",
+				       idx, ilog2(leaf->bitmap), idx);
+				err = -EINVAL;
+				goto out;
+			}
+		}
+	}
+out:
+	return dump_syncmap(sync, err);
+}
+
+static int igt_syncmap_random(void *arg)
+{
+	I915_RND_STATE(prng);
+	IGT_TIMEOUT(end_time);
+	struct i915_syncmap *sync;
+	unsigned long count, phase, i;
+	u32 seqno;
+	int err;
+
+	i915_syncmap_init(&sync);
+
+	/*
+	 * Having tried to test the individual operations within i915_syncmap,
+	 * run a smoketest exploring the entire u64 space with random
+	 * insertions.
+	 */
+
+	count = 0;
+	phase = jiffies + HZ/100 + 1;
+	do {
+		u64 context = i915_prandom_u64_state(&prng);
+
+		err = i915_syncmap_set(&sync, context, 0);
+		if (err)
+			goto out;
+
+		count++;
+	} while (!time_after(jiffies, phase));
+	seqno = 0;
+
+	phase = 0;
+	do {
+		I915_RND_STATE(ctx);
+		u32 last_seqno = seqno;
+		bool expect;
+
+		seqno = prandom_u32_state(&prng);
+		expect = seqno_later(last_seqno, seqno);
+
+		for (i = 0; i < count; i++) {
+			u64 context = i915_prandom_u64_state(&ctx);
+
+			if (i915_syncmap_is_later(&sync, context, seqno) != expect) {
+				pr_err("context=%llu, last=%u this=%u did not match expectation (%d)\n",
+				       context, last_seqno, seqno, expect);
+				err = -EINVAL;
+				goto out;
+			}
+
+			err = i915_syncmap_set(&sync, context, seqno);
+			if (err)
+				goto out;
+		}
+
+		phase++;
+	} while (!__igt_timeout(end_time, NULL));
+	pr_debug("Completed %lu passes, each of %lu contexts\n", phase, count);
+out:
+	return dump_syncmap(sync, err);
+}
+
+int i915_syncmap_mock_selftests(void)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_syncmap_init),
+		SUBTEST(igt_syncmap_one),
+		SUBTEST(igt_syncmap_join_above),
+		SUBTEST(igt_syncmap_join_below),
+		SUBTEST(igt_syncmap_neighbours),
+		SUBTEST(igt_syncmap_compact),
+		SUBTEST(igt_syncmap_random),
+	};
+
+	return i915_subtests(tests, NULL);
+}
diff --git a/drivers/gpu/drm/i915/selftests/i915_vma.c b/drivers/gpu/drm/i915/selftests/i915_vma.c
new file mode 100644
index 0000000000..71b52d5efe
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_vma.c
@@ -0,0 +1,1107 @@
+/*
+ * 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 <linux/prime_numbers.h>
+
+#include "gem/i915_gem_context.h"
+#include "gem/i915_gem_internal.h"
+#include "gem/selftests/mock_context.h"
+
+#include "i915_scatterlist.h"
+#include "i915_selftest.h"
+
+#include "mock_gem_device.h"
+#include "mock_gtt.h"
+
+static bool assert_vma(struct i915_vma *vma,
+		       struct drm_i915_gem_object *obj,
+		       struct i915_gem_context *ctx)
+{
+	bool ok = true;
+
+	if (vma->vm != ctx->vm) {
+		pr_err("VMA created with wrong VM\n");
+		ok = false;
+	}
+
+	if (vma->size != obj->base.size) {
+		pr_err("VMA created with wrong size, found %llu, expected %zu\n",
+		       vma->size, obj->base.size);
+		ok = false;
+	}
+
+	if (vma->gtt_view.type != I915_GTT_VIEW_NORMAL) {
+		pr_err("VMA created with wrong type [%d]\n",
+		       vma->gtt_view.type);
+		ok = false;
+	}
+
+	return ok;
+}
+
+static struct i915_vma *
+checked_vma_instance(struct drm_i915_gem_object *obj,
+		     struct i915_address_space *vm,
+		     const struct i915_gtt_view *view)
+{
+	struct i915_vma *vma;
+	bool ok = true;
+
+	vma = i915_vma_instance(obj, vm, view);
+	if (IS_ERR(vma))
+		return vma;
+
+	/* Manual checks, will be reinforced by i915_vma_compare! */
+	if (vma->vm != vm) {
+		pr_err("VMA's vm [%p] does not match request [%p]\n",
+		       vma->vm, vm);
+		ok = false;
+	}
+
+	if (i915_is_ggtt(vm) != i915_vma_is_ggtt(vma)) {
+		pr_err("VMA ggtt status [%d] does not match parent [%d]\n",
+		       i915_vma_is_ggtt(vma), i915_is_ggtt(vm));
+		ok = false;
+	}
+
+	if (i915_vma_compare(vma, vm, view)) {
+		pr_err("i915_vma_compare failed with create parameters!\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	if (i915_vma_compare(vma, vma->vm,
+			     i915_vma_is_ggtt(vma) ? &vma->gtt_view : NULL)) {
+		pr_err("i915_vma_compare failed with itself\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	if (!ok) {
+		pr_err("i915_vma_compare failed to detect the difference!\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	return vma;
+}
+
+static int create_vmas(struct drm_i915_private *i915,
+		       struct list_head *objects,
+		       struct list_head *contexts)
+{
+	struct drm_i915_gem_object *obj;
+	struct i915_gem_context *ctx;
+	int pinned;
+
+	list_for_each_entry(obj, objects, st_link) {
+		for (pinned = 0; pinned <= 1; pinned++) {
+			list_for_each_entry(ctx, contexts, link) {
+				struct i915_address_space *vm;
+				struct i915_vma *vma;
+				int err;
+
+				vm = i915_gem_context_get_eb_vm(ctx);
+				vma = checked_vma_instance(obj, vm, NULL);
+				i915_vm_put(vm);
+				if (IS_ERR(vma))
+					return PTR_ERR(vma);
+
+				if (!assert_vma(vma, obj, ctx)) {
+					pr_err("VMA lookup/create failed\n");
+					return -EINVAL;
+				}
+
+				if (!pinned) {
+					err = i915_vma_pin(vma, 0, 0, PIN_USER);
+					if (err) {
+						pr_err("Failed to pin VMA\n");
+						return err;
+					}
+				} else {
+					i915_vma_unpin(vma);
+				}
+			}
+		}
+	}
+
+	return 0;
+}
+
+static int igt_vma_create(void *arg)
+{
+	struct i915_ggtt *ggtt = arg;
+	struct drm_i915_private *i915 = ggtt->vm.i915;
+	struct drm_i915_gem_object *obj, *on;
+	struct i915_gem_context *ctx, *cn;
+	unsigned long num_obj, num_ctx;
+	unsigned long no, nc;
+	IGT_TIMEOUT(end_time);
+	LIST_HEAD(contexts);
+	LIST_HEAD(objects);
+	int err = -ENOMEM;
+
+	/* Exercise creating many vma amonst many objections, checking the
+	 * vma creation and lookup routines.
+	 */
+
+	no = 0;
+	for_each_prime_number(num_obj, ULONG_MAX - 1) {
+		for (; no < num_obj; no++) {
+			obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
+			if (IS_ERR(obj))
+				goto out;
+
+			list_add(&obj->st_link, &objects);
+		}
+
+		nc = 0;
+		for_each_prime_number(num_ctx, 2 * BITS_PER_LONG) {
+			for (; nc < num_ctx; nc++) {
+				ctx = mock_context(i915, "mock");
+				if (!ctx)
+					goto out;
+
+				list_move(&ctx->link, &contexts);
+			}
+
+			err = create_vmas(i915, &objects, &contexts);
+			if (err)
+				goto out;
+
+			if (igt_timeout(end_time,
+					"%s timed out: after %lu objects in %lu contexts\n",
+					__func__, no, nc))
+				goto end;
+		}
+
+		list_for_each_entry_safe(ctx, cn, &contexts, link) {
+			list_del_init(&ctx->link);
+			mock_context_close(ctx);
+		}
+
+		cond_resched();
+	}
+
+end:
+	/* Final pass to lookup all created contexts */
+	err = create_vmas(i915, &objects, &contexts);
+out:
+	list_for_each_entry_safe(ctx, cn, &contexts, link) {
+		list_del_init(&ctx->link);
+		mock_context_close(ctx);
+	}
+
+	list_for_each_entry_safe(obj, on, &objects, st_link)
+		i915_gem_object_put(obj);
+	return err;
+}
+
+struct pin_mode {
+	u64 size;
+	u64 flags;
+	bool (*assert)(const struct i915_vma *,
+		       const struct pin_mode *mode,
+		       int result);
+	const char *string;
+};
+
+static bool assert_pin_valid(const struct i915_vma *vma,
+			     const struct pin_mode *mode,
+			     int result)
+{
+	if (result)
+		return false;
+
+	if (i915_vma_misplaced(vma, mode->size, 0, mode->flags))
+		return false;
+
+	return true;
+}
+
+__maybe_unused
+static bool assert_pin_enospc(const struct i915_vma *vma,
+			      const struct pin_mode *mode,
+			      int result)
+{
+	return result == -ENOSPC;
+}
+
+__maybe_unused
+static bool assert_pin_einval(const struct i915_vma *vma,
+			      const struct pin_mode *mode,
+			      int result)
+{
+	return result == -EINVAL;
+}
+
+static int igt_vma_pin1(void *arg)
+{
+	struct i915_ggtt *ggtt = arg;
+	const struct pin_mode modes[] = {
+#define VALID(sz, fl) { .size = (sz), .flags = (fl), .assert = assert_pin_valid, .string = #sz ", " #fl ", (valid) " }
+#define __INVALID(sz, fl, check, eval) { .size = (sz), .flags = (fl), .assert = (check), .string = #sz ", " #fl ", (invalid " #eval ")" }
+#define INVALID(sz, fl) __INVALID(sz, fl, assert_pin_einval, EINVAL)
+#define NOSPACE(sz, fl) __INVALID(sz, fl, assert_pin_enospc, ENOSPC)
+		VALID(0, PIN_GLOBAL),
+		VALID(0, PIN_GLOBAL | PIN_MAPPABLE),
+
+		VALID(0, PIN_GLOBAL | PIN_OFFSET_BIAS | 4096),
+		VALID(0, PIN_GLOBAL | PIN_OFFSET_BIAS | 8192),
+		VALID(0, PIN_GLOBAL | PIN_OFFSET_BIAS | (ggtt->mappable_end - 4096)),
+		VALID(0, PIN_GLOBAL | PIN_MAPPABLE | PIN_OFFSET_BIAS | (ggtt->mappable_end - 4096)),
+		VALID(0, PIN_GLOBAL | PIN_OFFSET_BIAS | (ggtt->vm.total - 4096)),
+
+		VALID(0, PIN_GLOBAL | PIN_MAPPABLE | PIN_OFFSET_FIXED | (ggtt->mappable_end - 4096)),
+		INVALID(0, PIN_GLOBAL | PIN_MAPPABLE | PIN_OFFSET_FIXED | ggtt->mappable_end),
+		VALID(0, PIN_GLOBAL | PIN_OFFSET_FIXED | (ggtt->vm.total - 4096)),
+		INVALID(0, PIN_GLOBAL | PIN_OFFSET_FIXED | ggtt->vm.total),
+		INVALID(0, PIN_GLOBAL | PIN_OFFSET_FIXED | round_down(U64_MAX, PAGE_SIZE)),
+
+		VALID(4096, PIN_GLOBAL),
+		VALID(8192, PIN_GLOBAL),
+		VALID(ggtt->mappable_end - 4096, PIN_GLOBAL | PIN_MAPPABLE),
+		VALID(ggtt->mappable_end, PIN_GLOBAL | PIN_MAPPABLE),
+		NOSPACE(ggtt->mappable_end + 4096, PIN_GLOBAL | PIN_MAPPABLE),
+		VALID(ggtt->vm.total - 4096, PIN_GLOBAL),
+		VALID(ggtt->vm.total, PIN_GLOBAL),
+		NOSPACE(ggtt->vm.total + 4096, PIN_GLOBAL),
+		NOSPACE(round_down(U64_MAX, PAGE_SIZE), PIN_GLOBAL),
+		INVALID(8192, PIN_GLOBAL | PIN_MAPPABLE | PIN_OFFSET_FIXED | (ggtt->mappable_end - 4096)),
+		INVALID(8192, PIN_GLOBAL | PIN_OFFSET_FIXED | (ggtt->vm.total - 4096)),
+		INVALID(8192, PIN_GLOBAL | PIN_OFFSET_FIXED | (round_down(U64_MAX, PAGE_SIZE) - 4096)),
+
+		VALID(8192, PIN_GLOBAL | PIN_OFFSET_BIAS | (ggtt->mappable_end - 4096)),
+
+#if !IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM)
+		/* Misusing BIAS is a programming error (it is not controllable
+		 * from userspace) so when debugging is enabled, it explodes.
+		 * However, the tests are still quite interesting for checking
+		 * variable start, end and size.
+		 */
+		NOSPACE(0, PIN_GLOBAL | PIN_MAPPABLE | PIN_OFFSET_BIAS | ggtt->mappable_end),
+		NOSPACE(0, PIN_GLOBAL | PIN_OFFSET_BIAS | ggtt->vm.total),
+		NOSPACE(8192, PIN_GLOBAL | PIN_MAPPABLE | PIN_OFFSET_BIAS | (ggtt->mappable_end - 4096)),
+		NOSPACE(8192, PIN_GLOBAL | PIN_OFFSET_BIAS | (ggtt->vm.total - 4096)),
+#endif
+		{ },
+#undef NOSPACE
+#undef INVALID
+#undef __INVALID
+#undef VALID
+	}, *m;
+	struct drm_i915_gem_object *obj;
+	struct i915_vma *vma;
+	int err = -EINVAL;
+
+	/* Exercise all the weird and wonderful i915_vma_pin requests,
+	 * focusing on error handling of boundary conditions.
+	 */
+
+	GEM_BUG_ON(!drm_mm_clean(&ggtt->vm.mm));
+
+	obj = i915_gem_object_create_internal(ggtt->vm.i915, PAGE_SIZE);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	vma = checked_vma_instance(obj, &ggtt->vm, NULL);
+	if (IS_ERR(vma))
+		goto out;
+
+	for (m = modes; m->assert; m++) {
+		err = i915_vma_pin(vma, m->size, 0, m->flags);
+		if (!m->assert(vma, m, err)) {
+			pr_err("%s to pin single page into GGTT with mode[%d:%s]: size=%llx flags=%llx, err=%d\n",
+			       m->assert == assert_pin_valid ? "Failed" : "Unexpectedly succeeded",
+			       (int)(m - modes), m->string, m->size, m->flags,
+			       err);
+			if (!err)
+				i915_vma_unpin(vma);
+			err = -EINVAL;
+			goto out;
+		}
+
+		if (!err) {
+			i915_vma_unpin(vma);
+			err = i915_vma_unbind_unlocked(vma);
+			if (err) {
+				pr_err("Failed to unbind single page from GGTT, err=%d\n", err);
+				goto out;
+			}
+		}
+
+		cond_resched();
+	}
+
+	err = 0;
+out:
+	i915_gem_object_put(obj);
+	return err;
+}
+
+static unsigned long rotated_index(const struct intel_rotation_info *r,
+				   unsigned int n,
+				   unsigned int x,
+				   unsigned int y)
+{
+	return (r->plane[n].src_stride * (r->plane[n].height - y - 1) +
+		r->plane[n].offset + x);
+}
+
+static struct scatterlist *
+assert_rotated(struct drm_i915_gem_object *obj,
+	       const struct intel_rotation_info *r, unsigned int n,
+	       struct scatterlist *sg)
+{
+	unsigned int x, y;
+
+	for (x = 0; x < r->plane[n].width; x++) {
+		unsigned int left;
+
+		for (y = 0; y < r->plane[n].height; y++) {
+			unsigned long src_idx;
+			dma_addr_t src;
+
+			if (!sg) {
+				pr_err("Invalid sg table: too short at plane %d, (%d, %d)!\n",
+				       n, x, y);
+				return ERR_PTR(-EINVAL);
+			}
+
+			src_idx = rotated_index(r, n, x, y);
+			src = i915_gem_object_get_dma_address(obj, src_idx);
+
+			if (sg_dma_len(sg) != PAGE_SIZE) {
+				pr_err("Invalid sg.length, found %d, expected %lu for rotated page (%d, %d) [src index %lu]\n",
+				       sg_dma_len(sg), PAGE_SIZE,
+				       x, y, src_idx);
+				return ERR_PTR(-EINVAL);
+			}
+
+			if (sg_dma_address(sg) != src) {
+				pr_err("Invalid address for rotated page (%d, %d) [src index %lu]\n",
+				       x, y, src_idx);
+				return ERR_PTR(-EINVAL);
+			}
+
+			sg = sg_next(sg);
+		}
+
+		left = (r->plane[n].dst_stride - y) * PAGE_SIZE;
+
+		if (!left)
+			continue;
+
+		if (!sg) {
+			pr_err("Invalid sg table: too short at plane %d, (%d, %d)!\n",
+			       n, x, y);
+			return ERR_PTR(-EINVAL);
+		}
+
+		if (sg_dma_len(sg) != left) {
+			pr_err("Invalid sg.length, found %d, expected %u for rotated page (%d, %d)\n",
+			       sg_dma_len(sg), left, x, y);
+			return ERR_PTR(-EINVAL);
+		}
+
+		if (sg_dma_address(sg) != 0) {
+			pr_err("Invalid address, found %pad, expected 0 for remapped page (%d, %d)\n",
+			       &sg_dma_address(sg), x, y);
+			return ERR_PTR(-EINVAL);
+		}
+
+		sg = sg_next(sg);
+	}
+
+	return sg;
+}
+
+static unsigned long remapped_index(const struct intel_remapped_info *r,
+				    unsigned int n,
+				    unsigned int x,
+				    unsigned int y)
+{
+	return (r->plane[n].src_stride * y +
+		r->plane[n].offset + x);
+}
+
+static struct scatterlist *
+assert_remapped(struct drm_i915_gem_object *obj,
+		const struct intel_remapped_info *r, unsigned int n,
+		struct scatterlist *sg)
+{
+	unsigned int x, y;
+	unsigned int left = 0;
+	unsigned int offset;
+
+	for (y = 0; y < r->plane[n].height; y++) {
+		for (x = 0; x < r->plane[n].width; x++) {
+			unsigned long src_idx;
+			dma_addr_t src;
+
+			if (!sg) {
+				pr_err("Invalid sg table: too short at plane %d, (%d, %d)!\n",
+				       n, x, y);
+				return ERR_PTR(-EINVAL);
+			}
+			if (!left) {
+				offset = 0;
+				left = sg_dma_len(sg);
+			}
+
+			src_idx = remapped_index(r, n, x, y);
+			src = i915_gem_object_get_dma_address(obj, src_idx);
+
+			if (left < PAGE_SIZE || left & (PAGE_SIZE-1)) {
+				pr_err("Invalid sg.length, found %d, expected %lu for remapped page (%d, %d) [src index %lu]\n",
+				       sg_dma_len(sg), PAGE_SIZE,
+				       x, y, src_idx);
+				return ERR_PTR(-EINVAL);
+			}
+
+			if (sg_dma_address(sg) + offset != src) {
+				pr_err("Invalid address for remapped page (%d, %d) [src index %lu]\n",
+				       x, y, src_idx);
+				return ERR_PTR(-EINVAL);
+			}
+
+			left -= PAGE_SIZE;
+			offset += PAGE_SIZE;
+
+
+			if (!left)
+				sg = sg_next(sg);
+		}
+
+		if (left) {
+			pr_err("Unexpected sg tail with %d size for remapped page (%d, %d)\n",
+			       left,
+			       x, y);
+			return ERR_PTR(-EINVAL);
+		}
+
+		left = (r->plane[n].dst_stride - r->plane[n].width) * PAGE_SIZE;
+
+		if (!left)
+			continue;
+
+		if (!sg) {
+			pr_err("Invalid sg table: too short at plane %d, (%d, %d)!\n",
+			       n, x, y);
+			return ERR_PTR(-EINVAL);
+		}
+
+		if (sg_dma_len(sg) != left) {
+			pr_err("Invalid sg.length, found %u, expected %u for remapped page (%d, %d)\n",
+			       sg_dma_len(sg), left,
+			       x, y);
+			return ERR_PTR(-EINVAL);
+		}
+
+		if (sg_dma_address(sg) != 0) {
+			pr_err("Invalid address, found %pad, expected 0 for remapped page (%d, %d)\n",
+			       &sg_dma_address(sg),
+			       x, y);
+			return ERR_PTR(-EINVAL);
+		}
+
+		sg = sg_next(sg);
+		left = 0;
+	}
+
+	return sg;
+}
+
+static unsigned int remapped_size(enum i915_gtt_view_type view_type,
+				  const struct intel_remapped_plane_info *a,
+				  const struct intel_remapped_plane_info *b)
+{
+
+	if (view_type == I915_GTT_VIEW_ROTATED)
+		return a->dst_stride * a->width + b->dst_stride * b->width;
+	else
+		return a->dst_stride * a->height + b->dst_stride * b->height;
+}
+
+static int igt_vma_rotate_remap(void *arg)
+{
+	struct i915_ggtt *ggtt = arg;
+	struct i915_address_space *vm = &ggtt->vm;
+	struct drm_i915_gem_object *obj;
+	const struct intel_remapped_plane_info planes[] = {
+		{ .width = 1, .height = 1, .src_stride = 1 },
+		{ .width = 2, .height = 2, .src_stride = 2 },
+		{ .width = 4, .height = 4, .src_stride = 4 },
+		{ .width = 8, .height = 8, .src_stride = 8 },
+
+		{ .width = 3, .height = 5, .src_stride = 3 },
+		{ .width = 3, .height = 5, .src_stride = 4 },
+		{ .width = 3, .height = 5, .src_stride = 5 },
+
+		{ .width = 5, .height = 3, .src_stride = 5 },
+		{ .width = 5, .height = 3, .src_stride = 7 },
+		{ .width = 5, .height = 3, .src_stride = 9 },
+
+		{ .width = 4, .height = 6, .src_stride = 6 },
+		{ .width = 6, .height = 4, .src_stride = 6 },
+
+		{ .width = 2, .height = 2, .src_stride = 2, .dst_stride = 2 },
+		{ .width = 3, .height = 3, .src_stride = 3, .dst_stride = 4 },
+		{ .width = 5, .height = 6, .src_stride = 7, .dst_stride = 8 },
+
+		{ }
+	}, *a, *b;
+	enum i915_gtt_view_type types[] = {
+		I915_GTT_VIEW_ROTATED,
+		I915_GTT_VIEW_REMAPPED,
+		0,
+	}, *t;
+	const unsigned int max_pages = 64;
+	int err = -ENOMEM;
+
+	/* Create VMA for many different combinations of planes and check
+	 * that the page layout within the rotated VMA match our expectations.
+	 */
+
+	obj = i915_gem_object_create_internal(vm->i915, max_pages * PAGE_SIZE);
+	if (IS_ERR(obj))
+		goto out;
+
+	for (t = types; *t; t++) {
+	for (a = planes; a->width; a++) {
+		for (b = planes + ARRAY_SIZE(planes); b-- != planes; ) {
+			struct i915_gtt_view view = {
+				.type = *t,
+				.remapped.plane[0] = *a,
+				.remapped.plane[1] = *b,
+			};
+			struct intel_remapped_plane_info *plane_info = view.remapped.plane;
+			unsigned int n, max_offset;
+
+			max_offset = max(plane_info[0].src_stride * plane_info[0].height,
+					 plane_info[1].src_stride * plane_info[1].height);
+			GEM_BUG_ON(max_offset > max_pages);
+			max_offset = max_pages - max_offset;
+
+			if (!plane_info[0].dst_stride)
+				plane_info[0].dst_stride = view.type == I915_GTT_VIEW_ROTATED ?
+									plane_info[0].height :
+									plane_info[0].width;
+			if (!plane_info[1].dst_stride)
+				plane_info[1].dst_stride = view.type == I915_GTT_VIEW_ROTATED ?
+									plane_info[1].height :
+									plane_info[1].width;
+
+			for_each_prime_number_from(plane_info[0].offset, 0, max_offset) {
+				for_each_prime_number_from(plane_info[1].offset, 0, max_offset) {
+					struct scatterlist *sg;
+					struct i915_vma *vma;
+					unsigned int expected_pages;
+
+					vma = checked_vma_instance(obj, vm, &view);
+					if (IS_ERR(vma)) {
+						err = PTR_ERR(vma);
+						goto out_object;
+					}
+
+					err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL);
+					if (err) {
+						pr_err("Failed to pin VMA, err=%d\n", err);
+						goto out_object;
+					}
+
+					expected_pages = remapped_size(view.type, &plane_info[0], &plane_info[1]);
+
+					if (view.type == I915_GTT_VIEW_ROTATED &&
+					    vma->size != expected_pages * PAGE_SIZE) {
+						pr_err("VMA is wrong size, expected %lu, found %llu\n",
+						       PAGE_SIZE * expected_pages, vma->size);
+						err = -EINVAL;
+						goto out_object;
+					}
+
+					if (view.type == I915_GTT_VIEW_REMAPPED &&
+					    vma->size > expected_pages * PAGE_SIZE) {
+						pr_err("VMA is wrong size, expected %lu, found %llu\n",
+						       PAGE_SIZE * expected_pages, vma->size);
+						err = -EINVAL;
+						goto out_object;
+					}
+
+					if (vma->pages->nents > expected_pages) {
+						pr_err("sg table is wrong sizeo, expected %u, found %u nents\n",
+						       expected_pages, vma->pages->nents);
+						err = -EINVAL;
+						goto out_object;
+					}
+
+					if (vma->node.size < vma->size) {
+						pr_err("VMA binding too small, expected %llu, found %llu\n",
+						       vma->size, vma->node.size);
+						err = -EINVAL;
+						goto out_object;
+					}
+
+					if (vma->pages == obj->mm.pages) {
+						pr_err("VMA using unrotated object pages!\n");
+						err = -EINVAL;
+						goto out_object;
+					}
+
+					sg = vma->pages->sgl;
+					for (n = 0; n < ARRAY_SIZE(view.rotated.plane); n++) {
+						if (view.type == I915_GTT_VIEW_ROTATED)
+							sg = assert_rotated(obj, &view.rotated, n, sg);
+						else
+							sg = assert_remapped(obj, &view.remapped, n, sg);
+						if (IS_ERR(sg)) {
+							pr_err("Inconsistent %s VMA pages for plane %d: [(%d, %d, %d, %d, %d), (%d, %d, %d, %d, %d)]\n",
+							       view.type == I915_GTT_VIEW_ROTATED ?
+							       "rotated" : "remapped", n,
+							       plane_info[0].width,
+							       plane_info[0].height,
+							       plane_info[0].src_stride,
+							       plane_info[0].dst_stride,
+							       plane_info[0].offset,
+							       plane_info[1].width,
+							       plane_info[1].height,
+							       plane_info[1].src_stride,
+							       plane_info[1].dst_stride,
+							       plane_info[1].offset);
+							err = -EINVAL;
+							goto out_object;
+						}
+					}
+
+					i915_vma_unpin(vma);
+					err = i915_vma_unbind_unlocked(vma);
+					if (err) {
+						pr_err("Unbinding returned %i\n", err);
+						goto out_object;
+					}
+					cond_resched();
+				}
+			}
+		}
+	}
+	}
+
+out_object:
+	i915_gem_object_put(obj);
+out:
+	return err;
+}
+
+static bool assert_partial(struct drm_i915_gem_object *obj,
+			   struct i915_vma *vma,
+			   unsigned long offset,
+			   unsigned long size)
+{
+	struct sgt_iter sgt;
+	dma_addr_t dma;
+
+	for_each_sgt_daddr(dma, sgt, vma->pages) {
+		dma_addr_t src;
+
+		if (!size) {
+			pr_err("Partial scattergather list too long\n");
+			return false;
+		}
+
+		src = i915_gem_object_get_dma_address(obj, offset);
+		if (src != dma) {
+			pr_err("DMA mismatch for partial page offset %lu\n",
+			       offset);
+			return false;
+		}
+
+		offset++;
+		size--;
+	}
+
+	return true;
+}
+
+static bool assert_pin(struct i915_vma *vma,
+		       struct i915_gtt_view *view,
+		       u64 size,
+		       const char *name)
+{
+	bool ok = true;
+
+	if (vma->size != size) {
+		pr_err("(%s) VMA is wrong size, expected %llu, found %llu\n",
+		       name, size, vma->size);
+		ok = false;
+	}
+
+	if (vma->node.size < vma->size) {
+		pr_err("(%s) VMA binding too small, expected %llu, found %llu\n",
+		       name, vma->size, vma->node.size);
+		ok = false;
+	}
+
+	if (view && view->type != I915_GTT_VIEW_NORMAL) {
+		if (memcmp(&vma->gtt_view, view, sizeof(*view))) {
+			pr_err("(%s) VMA mismatch upon creation!\n",
+			       name);
+			ok = false;
+		}
+
+		if (vma->pages == vma->obj->mm.pages) {
+			pr_err("(%s) VMA using original object pages!\n",
+			       name);
+			ok = false;
+		}
+	} else {
+		if (vma->gtt_view.type != I915_GTT_VIEW_NORMAL) {
+			pr_err("Not the normal ggtt view! Found %d\n",
+			       vma->gtt_view.type);
+			ok = false;
+		}
+
+		if (vma->pages != vma->obj->mm.pages) {
+			pr_err("VMA not using object pages!\n");
+			ok = false;
+		}
+	}
+
+	return ok;
+}
+
+static int igt_vma_partial(void *arg)
+{
+	struct i915_ggtt *ggtt = arg;
+	struct i915_address_space *vm = &ggtt->vm;
+	const unsigned int npages = 1021; /* prime! */
+	struct drm_i915_gem_object *obj;
+	const struct phase {
+		const char *name;
+	} phases[] = {
+		{ "create" },
+		{ "lookup" },
+		{ },
+	}, *p;
+	unsigned int sz, offset;
+	struct i915_vma *vma;
+	int err = -ENOMEM;
+
+	/* Create lots of different VMA for the object and check that
+	 * we are returned the same VMA when we later request the same range.
+	 */
+
+	obj = i915_gem_object_create_internal(vm->i915, npages * PAGE_SIZE);
+	if (IS_ERR(obj))
+		goto out;
+
+	for (p = phases; p->name; p++) { /* exercise both create/lookup */
+		unsigned int count, nvma;
+
+		nvma = 0;
+		for_each_prime_number_from(sz, 1, npages) {
+			for_each_prime_number_from(offset, 0, npages - sz) {
+				struct i915_gtt_view view;
+
+				view.type = I915_GTT_VIEW_PARTIAL;
+				view.partial.offset = offset;
+				view.partial.size = sz;
+
+				if (sz == npages)
+					view.type = I915_GTT_VIEW_NORMAL;
+
+				vma = checked_vma_instance(obj, vm, &view);
+				if (IS_ERR(vma)) {
+					err = PTR_ERR(vma);
+					goto out_object;
+				}
+
+				err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL);
+				if (err)
+					goto out_object;
+
+				if (!assert_pin(vma, &view, sz*PAGE_SIZE, p->name)) {
+					pr_err("(%s) Inconsistent partial pinning for (offset=%d, size=%d)\n",
+					       p->name, offset, sz);
+					err = -EINVAL;
+					goto out_object;
+				}
+
+				if (!assert_partial(obj, vma, offset, sz)) {
+					pr_err("(%s) Inconsistent partial pages for (offset=%d, size=%d)\n",
+					       p->name, offset, sz);
+					err = -EINVAL;
+					goto out_object;
+				}
+
+				i915_vma_unpin(vma);
+				nvma++;
+				err = i915_vma_unbind_unlocked(vma);
+				if (err) {
+					pr_err("Unbinding returned %i\n", err);
+					goto out_object;
+				}
+
+				cond_resched();
+			}
+		}
+
+		count = 0;
+		list_for_each_entry(vma, &obj->vma.list, obj_link)
+			count++;
+		if (count != nvma) {
+			pr_err("(%s) All partial vma were not recorded on the obj->vma_list: found %u, expected %u\n",
+			       p->name, count, nvma);
+			err = -EINVAL;
+			goto out_object;
+		}
+
+		/* Check that we did create the whole object mapping */
+		vma = checked_vma_instance(obj, vm, NULL);
+		if (IS_ERR(vma)) {
+			err = PTR_ERR(vma);
+			goto out_object;
+		}
+
+		err = i915_vma_pin(vma, 0, 0, PIN_GLOBAL);
+		if (err)
+			goto out_object;
+
+		if (!assert_pin(vma, NULL, obj->base.size, p->name)) {
+			pr_err("(%s) inconsistent full pin\n", p->name);
+			err = -EINVAL;
+			goto out_object;
+		}
+
+		i915_vma_unpin(vma);
+
+		err = i915_vma_unbind_unlocked(vma);
+		if (err) {
+			pr_err("Unbinding returned %i\n", err);
+			goto out_object;
+		}
+
+		count = 0;
+		list_for_each_entry(vma, &obj->vma.list, obj_link)
+			count++;
+		if (count != nvma) {
+			pr_err("(%s) allocated an extra full vma!\n", p->name);
+			err = -EINVAL;
+			goto out_object;
+		}
+	}
+
+out_object:
+	i915_gem_object_put(obj);
+out:
+	return err;
+}
+
+int i915_vma_mock_selftests(void)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_vma_create),
+		SUBTEST(igt_vma_pin1),
+		SUBTEST(igt_vma_rotate_remap),
+		SUBTEST(igt_vma_partial),
+	};
+	struct drm_i915_private *i915;
+	struct intel_gt *gt;
+	int err;
+
+	i915 = mock_gem_device();
+	if (!i915)
+		return -ENOMEM;
+
+	/* allocate the ggtt */
+	err = intel_gt_assign_ggtt(to_gt(i915));
+	if (err)
+		goto out_put;
+
+	gt = to_gt(i915);
+
+	mock_init_ggtt(gt);
+
+	err = i915_subtests(tests, gt->ggtt);
+
+	mock_device_flush(i915);
+	i915_gem_drain_freed_objects(i915);
+	mock_fini_ggtt(gt->ggtt);
+
+out_put:
+	mock_destroy_device(i915);
+	return err;
+}
+
+static int igt_vma_remapped_gtt(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	const struct intel_remapped_plane_info planes[] = {
+		{ .width = 1, .height = 1, .src_stride = 1 },
+		{ .width = 2, .height = 2, .src_stride = 2 },
+		{ .width = 4, .height = 4, .src_stride = 4 },
+		{ .width = 8, .height = 8, .src_stride = 8 },
+
+		{ .width = 3, .height = 5, .src_stride = 3 },
+		{ .width = 3, .height = 5, .src_stride = 4 },
+		{ .width = 3, .height = 5, .src_stride = 5 },
+
+		{ .width = 5, .height = 3, .src_stride = 5 },
+		{ .width = 5, .height = 3, .src_stride = 7 },
+		{ .width = 5, .height = 3, .src_stride = 9 },
+
+		{ .width = 4, .height = 6, .src_stride = 6 },
+		{ .width = 6, .height = 4, .src_stride = 6 },
+
+		{ .width = 2, .height = 2, .src_stride = 2, .dst_stride = 2 },
+		{ .width = 3, .height = 3, .src_stride = 3, .dst_stride = 4 },
+		{ .width = 5, .height = 6, .src_stride = 7, .dst_stride = 8 },
+
+		{ }
+	}, *p;
+	enum i915_gtt_view_type types[] = {
+		I915_GTT_VIEW_ROTATED,
+		I915_GTT_VIEW_REMAPPED,
+		0,
+	}, *t;
+	struct drm_i915_gem_object *obj;
+	intel_wakeref_t wakeref;
+	int err = 0;
+
+	if (!i915_ggtt_has_aperture(to_gt(i915)->ggtt))
+		return 0;
+
+	obj = i915_gem_object_create_internal(i915, 10 * 10 * PAGE_SIZE);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	wakeref = intel_runtime_pm_get(&i915->runtime_pm);
+
+	for (t = types; *t; t++) {
+		for (p = planes; p->width; p++) {
+			struct i915_gtt_view view = {
+				.type = *t,
+				.rotated.plane[0] = *p,
+			};
+			struct intel_remapped_plane_info *plane_info = view.rotated.plane;
+			struct i915_vma *vma;
+			u32 __iomem *map;
+			unsigned int x, y;
+
+			i915_gem_object_lock(obj, NULL);
+			err = i915_gem_object_set_to_gtt_domain(obj, true);
+			i915_gem_object_unlock(obj);
+			if (err)
+				goto out;
+
+			if (!plane_info[0].dst_stride)
+				plane_info[0].dst_stride = *t == I915_GTT_VIEW_ROTATED ?
+								 p->height : p->width;
+
+			vma = i915_gem_object_ggtt_pin(obj, &view, 0, 0, PIN_MAPPABLE);
+			if (IS_ERR(vma)) {
+				err = PTR_ERR(vma);
+				goto out;
+			}
+
+			GEM_BUG_ON(vma->gtt_view.type != *t);
+
+			map = i915_vma_pin_iomap(vma);
+			i915_vma_unpin(vma);
+			if (IS_ERR(map)) {
+				err = PTR_ERR(map);
+				goto out;
+			}
+
+			for (y = 0 ; y < plane_info[0].height; y++) {
+				for (x = 0 ; x < plane_info[0].width; x++) {
+					unsigned int offset;
+					u32 val = y << 16 | x;
+
+					if (*t == I915_GTT_VIEW_ROTATED)
+						offset = (x * plane_info[0].dst_stride + y) * PAGE_SIZE;
+					else
+						offset = (y * plane_info[0].dst_stride + x) * PAGE_SIZE;
+
+					iowrite32(val, &map[offset / sizeof(*map)]);
+				}
+			}
+
+			i915_vma_unpin_iomap(vma);
+
+			vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0, PIN_MAPPABLE);
+			if (IS_ERR(vma)) {
+				err = PTR_ERR(vma);
+				goto out;
+			}
+
+			GEM_BUG_ON(vma->gtt_view.type != I915_GTT_VIEW_NORMAL);
+
+			map = i915_vma_pin_iomap(vma);
+			i915_vma_unpin(vma);
+			if (IS_ERR(map)) {
+				err = PTR_ERR(map);
+				goto out;
+			}
+
+			for (y = 0 ; y < plane_info[0].height; y++) {
+				for (x = 0 ; x < plane_info[0].width; x++) {
+					unsigned int offset, src_idx;
+					u32 exp = y << 16 | x;
+					u32 val;
+
+					if (*t == I915_GTT_VIEW_ROTATED)
+						src_idx = rotated_index(&view.rotated, 0, x, y);
+					else
+						src_idx = remapped_index(&view.remapped, 0, x, y);
+					offset = src_idx * PAGE_SIZE;
+
+					val = ioread32(&map[offset / sizeof(*map)]);
+					if (val != exp) {
+						pr_err("%s VMA write test failed, expected 0x%x, found 0x%x\n",
+						       *t == I915_GTT_VIEW_ROTATED ? "Rotated" : "Remapped",
+						       exp, val);
+						i915_vma_unpin_iomap(vma);
+						err = -EINVAL;
+						goto out;
+					}
+				}
+			}
+			i915_vma_unpin_iomap(vma);
+
+			cond_resched();
+		}
+	}
+
+out:
+	intel_runtime_pm_put(&i915->runtime_pm, wakeref);
+	i915_gem_object_put(obj);
+
+	return err;
+}
+
+int i915_vma_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_vma_remapped_gtt),
+	};
+
+	return i915_live_subtests(tests, i915);
+}
diff --git a/drivers/gpu/drm/i915/selftests/igt_atomic.c b/drivers/gpu/drm/i915/selftests/igt_atomic.c
new file mode 100644
index 0000000000..fb506b6990
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_atomic.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include <linux/preempt.h>
+#include <linux/bottom_half.h>
+#include <linux/irqflags.h>
+
+#include "igt_atomic.h"
+
+static void __preempt_begin(void)
+{
+	preempt_disable();
+}
+
+static void __preempt_end(void)
+{
+	preempt_enable();
+}
+
+static void __softirq_begin(void)
+{
+	local_bh_disable();
+}
+
+static void __softirq_end(void)
+{
+	local_bh_enable();
+}
+
+static void __hardirq_begin(void)
+{
+	local_irq_disable();
+}
+
+static void __hardirq_end(void)
+{
+	local_irq_enable();
+}
+
+const struct igt_atomic_section igt_atomic_phases[] = {
+	{ "preempt", __preempt_begin, __preempt_end },
+	{ "softirq", __softirq_begin, __softirq_end },
+	{ "hardirq", __hardirq_begin, __hardirq_end },
+	{ }
+};
diff --git a/drivers/gpu/drm/i915/selftests/igt_atomic.h b/drivers/gpu/drm/i915/selftests/igt_atomic.h
new file mode 100644
index 0000000000..1991798abf
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_atomic.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2018 Intel Corporation
+ */
+
+#ifndef IGT_ATOMIC_H
+#define IGT_ATOMIC_H
+
+struct igt_atomic_section {
+	const char *name;
+	void (*critical_section_begin)(void);
+	void (*critical_section_end)(void);
+};
+
+extern const struct igt_atomic_section igt_atomic_phases[];
+
+#endif /* IGT_ATOMIC_H */
diff --git a/drivers/gpu/drm/i915/selftests/igt_flush_test.c b/drivers/gpu/drm/i915/selftests/igt_flush_test.c
new file mode 100644
index 0000000000..29110abb4f
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_flush_test.c
@@ -0,0 +1,41 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include "gt/intel_gt.h"
+#include "gt/intel_gt_requests.h"
+
+#include "i915_drv.h"
+#include "i915_selftest.h"
+
+#include "igt_flush_test.h"
+
+int igt_flush_test(struct drm_i915_private *i915)
+{
+	struct intel_gt *gt;
+	unsigned int i;
+	int ret = 0;
+
+	for_each_gt(gt, i915, i) {
+		if (intel_gt_is_wedged(gt))
+			ret = -EIO;
+
+		cond_resched();
+
+		if (intel_gt_wait_for_idle(gt, HZ * 3) == -ETIME) {
+			pr_err("%pS timed out, cancelling all further testing.\n",
+			       __builtin_return_address(0));
+
+			GEM_TRACE("%pS timed out.\n",
+				  __builtin_return_address(0));
+			GEM_TRACE_DUMP();
+
+			intel_gt_set_wedged(gt);
+			ret = -EIO;
+		}
+	}
+
+	return ret;
+}
diff --git a/drivers/gpu/drm/i915/selftests/igt_flush_test.h b/drivers/gpu/drm/i915/selftests/igt_flush_test.h
new file mode 100644
index 0000000000..7541fa74e6
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_flush_test.h
@@ -0,0 +1,14 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#ifndef IGT_FLUSH_TEST_H
+#define IGT_FLUSH_TEST_H
+
+struct drm_i915_private;
+
+int igt_flush_test(struct drm_i915_private *i915);
+
+#endif /* IGT_FLUSH_TEST_H */
diff --git a/drivers/gpu/drm/i915/selftests/igt_live_test.c b/drivers/gpu/drm/i915/selftests/igt_live_test.c
new file mode 100644
index 0000000000..7d41874a49
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_live_test.c
@@ -0,0 +1,83 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include "i915_drv.h"
+#include "gt/intel_gt.h"
+#include "gt/intel_gt_print.h"
+
+#include "../i915_selftest.h"
+#include "igt_flush_test.h"
+#include "igt_live_test.h"
+
+int igt_live_test_begin(struct igt_live_test *t,
+			struct drm_i915_private *i915,
+			const char *func,
+			const char *name)
+{
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+	struct intel_gt *gt;
+	unsigned int i;
+	int err;
+
+	t->i915 = i915;
+	t->func = func;
+	t->name = name;
+
+	for_each_gt(gt, i915, i) {
+
+		err = intel_gt_wait_for_idle(gt, MAX_SCHEDULE_TIMEOUT);
+		if (err) {
+			gt_err(gt, "%s(%s): GT failed to idle before, with err=%d!",
+			       func, name, err);
+			return err;
+		}
+
+		for_each_engine(engine, gt, id)
+			t->reset_engine[i][id] =
+				i915_reset_engine_count(&i915->gpu_error,
+							engine);
+	}
+
+	t->reset_global = i915_reset_count(&i915->gpu_error);
+
+	return 0;
+}
+
+int igt_live_test_end(struct igt_live_test *t)
+{
+	struct drm_i915_private *i915 = t->i915;
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+	struct intel_gt *gt;
+	unsigned int i;
+
+	if (igt_flush_test(i915))
+		return -EIO;
+
+	if (t->reset_global != i915_reset_count(&i915->gpu_error)) {
+		pr_err("%s(%s): GPU was reset %d times!\n",
+		       t->func, t->name,
+		       i915_reset_count(&i915->gpu_error) - t->reset_global);
+		return -EIO;
+	}
+
+	for_each_gt(gt, i915, i) {
+		for_each_engine(engine, gt, id) {
+			if (t->reset_engine[i][id] ==
+			    i915_reset_engine_count(&i915->gpu_error, engine))
+				continue;
+
+			gt_err(gt, "%s(%s): engine '%s' was reset %d times!\n",
+			       t->func, t->name, engine->name,
+			       i915_reset_engine_count(&i915->gpu_error, engine) -
+			       t->reset_engine[i][id]);
+			return -EIO;
+		}
+	}
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/i915/selftests/igt_live_test.h b/drivers/gpu/drm/i915/selftests/igt_live_test.h
new file mode 100644
index 0000000000..83e3ad4309
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_live_test.h
@@ -0,0 +1,36 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef IGT_LIVE_TEST_H
+#define IGT_LIVE_TEST_H
+
+#include "gt/intel_gt_defines.h" /* for I915_MAX_GT */
+#include "gt/intel_engine.h" /* for I915_NUM_ENGINES */
+
+struct drm_i915_private;
+
+struct igt_live_test {
+	struct drm_i915_private *i915;
+	const char *func;
+	const char *name;
+
+	unsigned int reset_global;
+	unsigned int reset_engine[I915_MAX_GT][I915_NUM_ENGINES];
+};
+
+/*
+ * Flush the GPU state before and after the test to ensure that no residual
+ * code is running on the GPU that may affect this test. Also compare the
+ * state before and after the test and alert if it unexpectedly changes,
+ * e.g. if the GPU was reset.
+ */
+int igt_live_test_begin(struct igt_live_test *t,
+			struct drm_i915_private *i915,
+			const char *func,
+			const char *name);
+int igt_live_test_end(struct igt_live_test *t);
+
+#endif /* IGT_LIVE_TEST_H */
diff --git a/drivers/gpu/drm/i915/selftests/igt_mmap.c b/drivers/gpu/drm/i915/selftests/igt_mmap.c
new file mode 100644
index 0000000000..e920a461bd
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_mmap.c
@@ -0,0 +1,52 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <drm/drm_file.h>
+
+#include "i915_drv.h"
+#include "igt_mmap.h"
+
+unsigned long igt_mmap_offset(struct drm_i915_private *i915,
+			      u64 offset,
+			      unsigned long size,
+			      unsigned long prot,
+			      unsigned long flags)
+{
+	struct drm_vma_offset_node *node;
+	struct file *file;
+	unsigned long addr;
+	int err;
+
+	/* no need to refcount, we own this object */
+	drm_vma_offset_lock_lookup(i915->drm.vma_offset_manager);
+	node = drm_vma_offset_exact_lookup_locked(i915->drm.vma_offset_manager,
+						  offset / PAGE_SIZE, size / PAGE_SIZE);
+	drm_vma_offset_unlock_lookup(i915->drm.vma_offset_manager);
+
+	if (GEM_WARN_ON(!node)) {
+		pr_info("Failed to lookup %llx\n", offset);
+		return -ENOENT;
+	}
+
+	/* Pretend to open("/dev/dri/card0") */
+	file = mock_drm_getfile(i915->drm.primary, O_RDWR);
+	if (IS_ERR(file))
+		return PTR_ERR(file);
+
+	err = drm_vma_node_allow(node, file->private_data);
+	if (err) {
+		addr = err;
+		goto out_file;
+	}
+
+	addr = vm_mmap(file, 0, drm_vma_node_size(node) << PAGE_SHIFT,
+		       prot, flags, drm_vma_node_offset_addr(node));
+
+	drm_vma_node_revoke(node, file->private_data);
+out_file:
+	fput(file);
+	return addr;
+}
diff --git a/drivers/gpu/drm/i915/selftests/igt_mmap.h b/drivers/gpu/drm/i915/selftests/igt_mmap.h
new file mode 100644
index 0000000000..acbe34d81a
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_mmap.h
@@ -0,0 +1,21 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef IGT_MMAP_H
+#define IGT_MMAP_H
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+struct drm_vma_offset_node;
+
+unsigned long igt_mmap_offset(struct drm_i915_private *i915,
+			      u64 offset,
+			      unsigned long size,
+			      unsigned long prot,
+			      unsigned long flags);
+
+#endif /* IGT_MMAP_H */
diff --git a/drivers/gpu/drm/i915/selftests/igt_reset.c b/drivers/gpu/drm/i915/selftests/igt_reset.c
new file mode 100644
index 0000000000..a2838c65f8
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_reset.c
@@ -0,0 +1,51 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#include "igt_reset.h"
+
+#include "gt/intel_engine.h"
+#include "gt/intel_gt.h"
+
+#include "../i915_drv.h"
+
+void igt_global_reset_lock(struct intel_gt *gt)
+{
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+
+	pr_debug("%s: current gpu_error=%08lx\n", __func__, gt->reset.flags);
+
+	while (test_and_set_bit(I915_RESET_BACKOFF, &gt->reset.flags))
+		wait_event(gt->reset.queue,
+			   !test_bit(I915_RESET_BACKOFF, &gt->reset.flags));
+
+	for_each_engine(engine, gt, id) {
+		while (test_and_set_bit(I915_RESET_ENGINE + id,
+					&gt->reset.flags))
+			wait_on_bit(&gt->reset.flags, I915_RESET_ENGINE + id,
+				    TASK_UNINTERRUPTIBLE);
+	}
+}
+
+void igt_global_reset_unlock(struct intel_gt *gt)
+{
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+
+	for_each_engine(engine, gt, id)
+		clear_and_wake_up_bit(I915_RESET_ENGINE + id, &gt->reset.flags);
+
+	clear_bit(I915_RESET_BACKOFF, &gt->reset.flags);
+	wake_up_all(&gt->reset.queue);
+}
+
+bool igt_force_reset(struct intel_gt *gt)
+{
+	intel_gt_set_wedged(gt);
+	intel_gt_reset(gt, 0, NULL);
+
+	return !intel_gt_is_wedged(gt);
+}
diff --git a/drivers/gpu/drm/i915/selftests/igt_reset.h b/drivers/gpu/drm/i915/selftests/igt_reset.h
new file mode 100644
index 0000000000..851873b67a
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_reset.h
@@ -0,0 +1,18 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#ifndef __I915_SELFTESTS_IGT_RESET_H__
+#define __I915_SELFTESTS_IGT_RESET_H__
+
+#include <linux/types.h>
+
+struct intel_gt;
+
+void igt_global_reset_lock(struct intel_gt *gt);
+void igt_global_reset_unlock(struct intel_gt *gt);
+bool igt_force_reset(struct intel_gt *gt);
+
+#endif
diff --git a/drivers/gpu/drm/i915/selftests/igt_spinner.c b/drivers/gpu/drm/i915/selftests/igt_spinner.c
new file mode 100644
index 0000000000..0f064930ef
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_spinner.c
@@ -0,0 +1,261 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+#include "gt/intel_gpu_commands.h"
+#include "gt/intel_gt.h"
+
+#include "gem/i915_gem_internal.h"
+#include "gem/selftests/igt_gem_utils.h"
+
+#include "igt_spinner.h"
+
+int igt_spinner_init(struct igt_spinner *spin, struct intel_gt *gt)
+{
+	int err;
+
+	memset(spin, 0, sizeof(*spin));
+	spin->gt = gt;
+
+	spin->hws = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
+	if (IS_ERR(spin->hws)) {
+		err = PTR_ERR(spin->hws);
+		goto err;
+	}
+	i915_gem_object_set_cache_coherency(spin->hws, I915_CACHE_LLC);
+
+	spin->obj = i915_gem_object_create_internal(gt->i915, PAGE_SIZE);
+	if (IS_ERR(spin->obj)) {
+		err = PTR_ERR(spin->obj);
+		goto err_hws;
+	}
+
+	return 0;
+
+err_hws:
+	i915_gem_object_put(spin->hws);
+err:
+	return err;
+}
+
+static void *igt_spinner_pin_obj(struct intel_context *ce,
+				 struct i915_gem_ww_ctx *ww,
+				 struct drm_i915_gem_object *obj,
+				 unsigned int mode, struct i915_vma **vma)
+{
+	void *vaddr;
+	int ret;
+
+	*vma = i915_vma_instance(obj, ce->vm, NULL);
+	if (IS_ERR(*vma))
+		return ERR_CAST(*vma);
+
+	ret = i915_gem_object_lock(obj, ww);
+	if (ret)
+		return ERR_PTR(ret);
+
+	vaddr = i915_gem_object_pin_map(obj, mode);
+
+	if (!ww)
+		i915_gem_object_unlock(obj);
+
+	if (IS_ERR(vaddr))
+		return vaddr;
+
+	if (ww)
+		ret = i915_vma_pin_ww(*vma, ww, 0, 0, PIN_USER);
+	else
+		ret = i915_vma_pin(*vma, 0, 0, PIN_USER);
+
+	if (ret) {
+		i915_gem_object_unpin_map(obj);
+		return ERR_PTR(ret);
+	}
+
+	return vaddr;
+}
+
+int igt_spinner_pin(struct igt_spinner *spin,
+		    struct intel_context *ce,
+		    struct i915_gem_ww_ctx *ww)
+{
+	void *vaddr;
+
+	if (spin->ce && WARN_ON(spin->ce != ce))
+		return -ENODEV;
+	spin->ce = ce;
+
+	if (!spin->seqno) {
+		vaddr = igt_spinner_pin_obj(ce, ww, spin->hws, I915_MAP_WB, &spin->hws_vma);
+		if (IS_ERR(vaddr))
+			return PTR_ERR(vaddr);
+
+		spin->seqno = memset(vaddr, 0xff, PAGE_SIZE);
+	}
+
+	if (!spin->batch) {
+		unsigned int mode;
+
+		mode = intel_gt_coherent_map_type(spin->gt, spin->obj, false);
+		vaddr = igt_spinner_pin_obj(ce, ww, spin->obj, mode, &spin->batch_vma);
+		if (IS_ERR(vaddr))
+			return PTR_ERR(vaddr);
+
+		spin->batch = vaddr;
+	}
+
+	return 0;
+}
+
+static unsigned int seqno_offset(u64 fence)
+{
+	return offset_in_page(sizeof(u32) * fence);
+}
+
+static u64 hws_address(const struct i915_vma *hws,
+		       const struct i915_request *rq)
+{
+	return i915_vma_offset(hws) + seqno_offset(rq->fence.context);
+}
+
+struct i915_request *
+igt_spinner_create_request(struct igt_spinner *spin,
+			   struct intel_context *ce,
+			   u32 arbitration_command)
+{
+	struct intel_engine_cs *engine = ce->engine;
+	struct i915_request *rq = NULL;
+	struct i915_vma *hws, *vma;
+	unsigned int flags;
+	u32 *batch;
+	int err;
+
+	GEM_BUG_ON(spin->gt != ce->vm->gt);
+
+	if (!intel_engine_can_store_dword(ce->engine))
+		return ERR_PTR(-ENODEV);
+
+	if (!spin->batch) {
+		err = igt_spinner_pin(spin, ce, NULL);
+		if (err)
+			return ERR_PTR(err);
+	}
+
+	hws = spin->hws_vma;
+	vma = spin->batch_vma;
+
+	rq = intel_context_create_request(ce);
+	if (IS_ERR(rq))
+		return ERR_CAST(rq);
+
+	err = igt_vma_move_to_active_unlocked(vma, rq, 0);
+	if (err)
+		goto cancel_rq;
+
+	err = igt_vma_move_to_active_unlocked(hws, rq, 0);
+	if (err)
+		goto cancel_rq;
+
+	batch = spin->batch;
+
+	if (GRAPHICS_VER(rq->i915) >= 8) {
+		*batch++ = MI_STORE_DWORD_IMM_GEN4;
+		*batch++ = lower_32_bits(hws_address(hws, rq));
+		*batch++ = upper_32_bits(hws_address(hws, rq));
+	} else if (GRAPHICS_VER(rq->i915) >= 6) {
+		*batch++ = MI_STORE_DWORD_IMM_GEN4;
+		*batch++ = 0;
+		*batch++ = hws_address(hws, rq);
+	} else if (GRAPHICS_VER(rq->i915) >= 4) {
+		*batch++ = MI_STORE_DWORD_IMM_GEN4 | MI_USE_GGTT;
+		*batch++ = 0;
+		*batch++ = hws_address(hws, rq);
+	} else {
+		*batch++ = MI_STORE_DWORD_IMM | MI_MEM_VIRTUAL;
+		*batch++ = hws_address(hws, rq);
+	}
+	*batch++ = rq->fence.seqno;
+
+	*batch++ = arbitration_command;
+
+	if (GRAPHICS_VER(rq->i915) >= 8)
+		*batch++ = MI_BATCH_BUFFER_START | BIT(8) | 1;
+	else if (IS_HASWELL(rq->i915))
+		*batch++ = MI_BATCH_BUFFER_START | MI_BATCH_PPGTT_HSW;
+	else if (GRAPHICS_VER(rq->i915) >= 6)
+		*batch++ = MI_BATCH_BUFFER_START;
+	else
+		*batch++ = MI_BATCH_BUFFER_START | MI_BATCH_GTT;
+	*batch++ = lower_32_bits(i915_vma_offset(vma));
+	*batch++ = upper_32_bits(i915_vma_offset(vma));
+
+	*batch++ = MI_BATCH_BUFFER_END; /* not reached */
+
+	intel_gt_chipset_flush(engine->gt);
+
+	if (engine->emit_init_breadcrumb) {
+		err = engine->emit_init_breadcrumb(rq);
+		if (err)
+			goto cancel_rq;
+	}
+
+	flags = 0;
+	if (GRAPHICS_VER(rq->i915) <= 5)
+		flags |= I915_DISPATCH_SECURE;
+	err = engine->emit_bb_start(rq, i915_vma_offset(vma), PAGE_SIZE, flags);
+
+cancel_rq:
+	if (err) {
+		i915_request_set_error_once(rq, err);
+		i915_request_add(rq);
+	}
+	return err ? ERR_PTR(err) : rq;
+}
+
+static u32
+hws_seqno(const struct igt_spinner *spin, const struct i915_request *rq)
+{
+	u32 *seqno = spin->seqno + seqno_offset(rq->fence.context);
+
+	return READ_ONCE(*seqno);
+}
+
+void igt_spinner_end(struct igt_spinner *spin)
+{
+	if (!spin->batch)
+		return;
+
+	*spin->batch = MI_BATCH_BUFFER_END;
+	intel_gt_chipset_flush(spin->gt);
+}
+
+void igt_spinner_fini(struct igt_spinner *spin)
+{
+	igt_spinner_end(spin);
+
+	if (spin->batch) {
+		i915_vma_unpin(spin->batch_vma);
+		i915_gem_object_unpin_map(spin->obj);
+	}
+	i915_gem_object_put(spin->obj);
+
+	if (spin->seqno) {
+		i915_vma_unpin(spin->hws_vma);
+		i915_gem_object_unpin_map(spin->hws);
+	}
+	i915_gem_object_put(spin->hws);
+}
+
+bool igt_wait_for_spinner(struct igt_spinner *spin, struct i915_request *rq)
+{
+	if (i915_request_is_ready(rq))
+		intel_engine_flush_submission(rq->engine);
+
+	return !(wait_for_us(i915_seqno_passed(hws_seqno(spin, rq),
+					       rq->fence.seqno),
+			     100) &&
+		 wait_for(i915_seqno_passed(hws_seqno(spin, rq),
+					    rq->fence.seqno),
+			  50));
+}
diff --git a/drivers/gpu/drm/i915/selftests/igt_spinner.h b/drivers/gpu/drm/i915/selftests/igt_spinner.h
new file mode 100644
index 0000000000..fbe5b1625b
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/igt_spinner.h
@@ -0,0 +1,43 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2018 Intel Corporation
+ */
+
+#ifndef __I915_SELFTESTS_IGT_SPINNER_H__
+#define __I915_SELFTESTS_IGT_SPINNER_H__
+
+#include "gem/i915_gem_context.h"
+#include "gt/intel_engine.h"
+
+#include "i915_drv.h"
+#include "i915_request.h"
+#include "i915_selftest.h"
+
+struct intel_gt;
+
+struct igt_spinner {
+	struct intel_gt *gt;
+	struct drm_i915_gem_object *hws;
+	struct drm_i915_gem_object *obj;
+	struct intel_context *ce;
+	struct i915_vma *hws_vma, *batch_vma;
+	u32 *batch;
+	void *seqno;
+};
+
+int igt_spinner_init(struct igt_spinner *spin, struct intel_gt *gt);
+int igt_spinner_pin(struct igt_spinner *spin,
+		    struct intel_context *ce,
+		    struct i915_gem_ww_ctx *ww);
+void igt_spinner_fini(struct igt_spinner *spin);
+
+struct i915_request *
+igt_spinner_create_request(struct igt_spinner *spin,
+			   struct intel_context *ce,
+			   u32 arbitration_command);
+void igt_spinner_end(struct igt_spinner *spin);
+
+bool igt_wait_for_spinner(struct igt_spinner *spin, struct i915_request *rq);
+
+#endif
diff --git a/drivers/gpu/drm/i915/selftests/intel_memory_region.c b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
new file mode 100644
index 0000000000..d985d9bae2
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/intel_memory_region.c
@@ -0,0 +1,1413 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <linux/prime_numbers.h>
+#include <linux/sort.h>
+
+#include <drm/drm_buddy.h>
+
+#include "../i915_selftest.h"
+
+#include "mock_drm.h"
+#include "mock_gem_device.h"
+#include "mock_region.h"
+
+#include "gem/i915_gem_context.h"
+#include "gem/i915_gem_lmem.h"
+#include "gem/i915_gem_region.h"
+#include "gem/i915_gem_ttm.h"
+#include "gem/selftests/igt_gem_utils.h"
+#include "gem/selftests/mock_context.h"
+#include "gt/intel_engine_pm.h"
+#include "gt/intel_engine_user.h"
+#include "gt/intel_gt.h"
+#include "gt/intel_migrate.h"
+#include "i915_memcpy.h"
+#include "i915_ttm_buddy_manager.h"
+#include "selftests/igt_flush_test.h"
+#include "selftests/i915_random.h"
+
+static void close_objects(struct intel_memory_region *mem,
+			  struct list_head *objects)
+{
+	struct drm_i915_private *i915 = mem->i915;
+	struct drm_i915_gem_object *obj, *on;
+
+	list_for_each_entry_safe(obj, on, objects, st_link) {
+		i915_gem_object_lock(obj, NULL);
+		if (i915_gem_object_has_pinned_pages(obj))
+			i915_gem_object_unpin_pages(obj);
+		/* No polluting the memory region between tests */
+		__i915_gem_object_put_pages(obj);
+		i915_gem_object_unlock(obj);
+		list_del(&obj->st_link);
+		i915_gem_object_put(obj);
+	}
+
+	cond_resched();
+
+	i915_gem_drain_freed_objects(i915);
+}
+
+static int igt_mock_fill(void *arg)
+{
+	struct intel_memory_region *mem = arg;
+	resource_size_t total = resource_size(&mem->region);
+	resource_size_t page_size;
+	resource_size_t rem;
+	unsigned long max_pages;
+	unsigned long page_num;
+	LIST_HEAD(objects);
+	int err = 0;
+
+	page_size = PAGE_SIZE;
+	max_pages = div64_u64(total, page_size);
+	rem = total;
+
+	for_each_prime_number_from(page_num, 1, max_pages) {
+		resource_size_t size = page_num * page_size;
+		struct drm_i915_gem_object *obj;
+
+		obj = i915_gem_object_create_region(mem, size, 0, 0);
+		if (IS_ERR(obj)) {
+			err = PTR_ERR(obj);
+			break;
+		}
+
+		err = i915_gem_object_pin_pages_unlocked(obj);
+		if (err) {
+			i915_gem_object_put(obj);
+			break;
+		}
+
+		list_add(&obj->st_link, &objects);
+		rem -= size;
+	}
+
+	if (err == -ENOMEM)
+		err = 0;
+	if (err == -ENXIO) {
+		if (page_num * page_size <= rem) {
+			pr_err("%s failed, space still left in region\n",
+			       __func__);
+			err = -EINVAL;
+		} else {
+			err = 0;
+		}
+	}
+
+	close_objects(mem, &objects);
+
+	return err;
+}
+
+static struct drm_i915_gem_object *
+igt_object_create(struct intel_memory_region *mem,
+		  struct list_head *objects,
+		  u64 size,
+		  unsigned int flags)
+{
+	struct drm_i915_gem_object *obj;
+	int err;
+
+	obj = i915_gem_object_create_region(mem, size, 0, flags);
+	if (IS_ERR(obj))
+		return obj;
+
+	err = i915_gem_object_pin_pages_unlocked(obj);
+	if (err)
+		goto put;
+
+	list_add(&obj->st_link, objects);
+	return obj;
+
+put:
+	i915_gem_object_put(obj);
+	return ERR_PTR(err);
+}
+
+static void igt_object_release(struct drm_i915_gem_object *obj)
+{
+	i915_gem_object_lock(obj, NULL);
+	i915_gem_object_unpin_pages(obj);
+	__i915_gem_object_put_pages(obj);
+	i915_gem_object_unlock(obj);
+	list_del(&obj->st_link);
+	i915_gem_object_put(obj);
+}
+
+static bool is_contiguous(struct drm_i915_gem_object *obj)
+{
+	struct scatterlist *sg;
+	dma_addr_t addr = -1;
+
+	for (sg = obj->mm.pages->sgl; sg; sg = sg_next(sg)) {
+		if (addr != -1 && sg_dma_address(sg) != addr)
+			return false;
+
+		addr = sg_dma_address(sg) + sg_dma_len(sg);
+	}
+
+	return true;
+}
+
+static int igt_mock_reserve(void *arg)
+{
+	struct intel_memory_region *mem = arg;
+	struct drm_i915_private *i915 = mem->i915;
+	resource_size_t avail = resource_size(&mem->region);
+	struct drm_i915_gem_object *obj;
+	const u32 chunk_size = SZ_32M;
+	u32 i, offset, count, *order;
+	u64 allocated, cur_avail;
+	I915_RND_STATE(prng);
+	LIST_HEAD(objects);
+	int err = 0;
+
+	count = avail / chunk_size;
+	order = i915_random_order(count, &prng);
+	if (!order)
+		return 0;
+
+	mem = mock_region_create(i915, 0, SZ_2G, I915_GTT_PAGE_SIZE_4K, 0, 0);
+	if (IS_ERR(mem)) {
+		pr_err("failed to create memory region\n");
+		err = PTR_ERR(mem);
+		goto out_free_order;
+	}
+
+	/* Reserve a bunch of ranges within the region */
+	for (i = 0; i < count; ++i) {
+		u64 start = order[i] * chunk_size;
+		u64 size = i915_prandom_u32_max_state(chunk_size, &prng);
+
+		/* Allow for some really big holes */
+		if (!size)
+			continue;
+
+		size = round_up(size, PAGE_SIZE);
+		offset = igt_random_offset(&prng, 0, chunk_size, size,
+					   PAGE_SIZE);
+
+		err = intel_memory_region_reserve(mem, start + offset, size);
+		if (err) {
+			pr_err("%s failed to reserve range", __func__);
+			goto out_close;
+		}
+
+		/* XXX: maybe sanity check the block range here? */
+		avail -= size;
+	}
+
+	/* Try to see if we can allocate from the remaining space */
+	allocated = 0;
+	cur_avail = avail;
+	do {
+		u32 size = i915_prandom_u32_max_state(cur_avail, &prng);
+
+		size = max_t(u32, round_up(size, PAGE_SIZE), PAGE_SIZE);
+		obj = igt_object_create(mem, &objects, size, 0);
+		if (IS_ERR(obj)) {
+			if (PTR_ERR(obj) == -ENXIO)
+				break;
+
+			err = PTR_ERR(obj);
+			goto out_close;
+		}
+		cur_avail -= size;
+		allocated += size;
+	} while (1);
+
+	if (allocated != avail) {
+		pr_err("%s mismatch between allocation and free space", __func__);
+		err = -EINVAL;
+	}
+
+out_close:
+	close_objects(mem, &objects);
+	intel_memory_region_destroy(mem);
+out_free_order:
+	kfree(order);
+	return err;
+}
+
+static int igt_mock_contiguous(void *arg)
+{
+	struct intel_memory_region *mem = arg;
+	struct drm_i915_gem_object *obj;
+	unsigned long n_objects;
+	LIST_HEAD(objects);
+	LIST_HEAD(holes);
+	I915_RND_STATE(prng);
+	resource_size_t total;
+	resource_size_t min;
+	u64 target;
+	int err = 0;
+
+	total = resource_size(&mem->region);
+
+	/* Min size */
+	obj = igt_object_create(mem, &objects, PAGE_SIZE,
+				I915_BO_ALLOC_CONTIGUOUS);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	if (!is_contiguous(obj)) {
+		pr_err("%s min object spans disjoint sg entries\n", __func__);
+		err = -EINVAL;
+		goto err_close_objects;
+	}
+
+	igt_object_release(obj);
+
+	/* Max size */
+	obj = igt_object_create(mem, &objects, total, I915_BO_ALLOC_CONTIGUOUS);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	if (!is_contiguous(obj)) {
+		pr_err("%s max object spans disjoint sg entries\n", __func__);
+		err = -EINVAL;
+		goto err_close_objects;
+	}
+
+	igt_object_release(obj);
+
+	/* Internal fragmentation should not bleed into the object size */
+	target = i915_prandom_u64_state(&prng);
+	div64_u64_rem(target, total, &target);
+	target = round_up(target, PAGE_SIZE);
+	target = max_t(u64, PAGE_SIZE, target);
+
+	obj = igt_object_create(mem, &objects, target,
+				I915_BO_ALLOC_CONTIGUOUS);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	if (obj->base.size != target) {
+		pr_err("%s obj->base.size(%zx) != target(%llx)\n", __func__,
+		       obj->base.size, target);
+		err = -EINVAL;
+		goto err_close_objects;
+	}
+
+	if (!is_contiguous(obj)) {
+		pr_err("%s object spans disjoint sg entries\n", __func__);
+		err = -EINVAL;
+		goto err_close_objects;
+	}
+
+	igt_object_release(obj);
+
+	/*
+	 * Try to fragment the address space, such that half of it is free, but
+	 * the max contiguous block size is SZ_64K.
+	 */
+
+	target = SZ_64K;
+	n_objects = div64_u64(total, target);
+
+	while (n_objects--) {
+		struct list_head *list;
+
+		if (n_objects % 2)
+			list = &holes;
+		else
+			list = &objects;
+
+		obj = igt_object_create(mem, list, target,
+					I915_BO_ALLOC_CONTIGUOUS);
+		if (IS_ERR(obj)) {
+			err = PTR_ERR(obj);
+			goto err_close_objects;
+		}
+	}
+
+	close_objects(mem, &holes);
+
+	min = target;
+	target = total >> 1;
+
+	/* Make sure we can still allocate all the fragmented space */
+	obj = igt_object_create(mem, &objects, target, 0);
+	if (IS_ERR(obj)) {
+		err = PTR_ERR(obj);
+		goto err_close_objects;
+	}
+
+	igt_object_release(obj);
+
+	/*
+	 * Even though we have enough free space, we don't have a big enough
+	 * contiguous block. Make sure that holds true.
+	 */
+
+	do {
+		bool should_fail = target > min;
+
+		obj = igt_object_create(mem, &objects, target,
+					I915_BO_ALLOC_CONTIGUOUS);
+		if (should_fail != IS_ERR(obj)) {
+			pr_err("%s target allocation(%llx) mismatch\n",
+			       __func__, target);
+			err = -EINVAL;
+			goto err_close_objects;
+		}
+
+		target >>= 1;
+	} while (target >= PAGE_SIZE);
+
+err_close_objects:
+	list_splice_tail(&holes, &objects);
+	close_objects(mem, &objects);
+	return err;
+}
+
+static int igt_mock_splintered_region(void *arg)
+{
+	struct intel_memory_region *mem = arg;
+	struct drm_i915_private *i915 = mem->i915;
+	struct i915_ttm_buddy_resource *res;
+	struct drm_i915_gem_object *obj;
+	struct drm_buddy *mm;
+	unsigned int expected_order;
+	LIST_HEAD(objects);
+	u64 size;
+	int err = 0;
+
+	/*
+	 * Sanity check we can still allocate everything even if the
+	 * mm.max_order != mm.size. i.e our starting address space size is not a
+	 * power-of-two.
+	 */
+
+	size = (SZ_4G - 1) & PAGE_MASK;
+	mem = mock_region_create(i915, 0, size, PAGE_SIZE, 0, 0);
+	if (IS_ERR(mem))
+		return PTR_ERR(mem);
+
+	obj = igt_object_create(mem, &objects, size, 0);
+	if (IS_ERR(obj)) {
+		err = PTR_ERR(obj);
+		goto out_close;
+	}
+
+	res = to_ttm_buddy_resource(obj->mm.res);
+	mm = res->mm;
+	if (mm->size != size) {
+		pr_err("%s size mismatch(%llu != %llu)\n",
+		       __func__, mm->size, size);
+		err = -EINVAL;
+		goto out_put;
+	}
+
+	expected_order = get_order(rounddown_pow_of_two(size));
+	if (mm->max_order != expected_order) {
+		pr_err("%s order mismatch(%u != %u)\n",
+		       __func__, mm->max_order, expected_order);
+		err = -EINVAL;
+		goto out_put;
+	}
+
+	close_objects(mem, &objects);
+
+	/*
+	 * While we should be able allocate everything without any flag
+	 * restrictions, if we consider I915_BO_ALLOC_CONTIGUOUS then we are
+	 * actually limited to the largest power-of-two for the region size i.e
+	 * max_order, due to the inner workings of the buddy allocator. So make
+	 * sure that does indeed hold true.
+	 */
+
+	obj = igt_object_create(mem, &objects, size, I915_BO_ALLOC_CONTIGUOUS);
+	if (!IS_ERR(obj)) {
+		pr_err("%s too large contiguous allocation was not rejected\n",
+		       __func__);
+		err = -EINVAL;
+		goto out_close;
+	}
+
+	obj = igt_object_create(mem, &objects, rounddown_pow_of_two(size),
+				I915_BO_ALLOC_CONTIGUOUS);
+	if (IS_ERR(obj)) {
+		pr_err("%s largest possible contiguous allocation failed\n",
+		       __func__);
+		err = PTR_ERR(obj);
+		goto out_close;
+	}
+
+out_close:
+	close_objects(mem, &objects);
+out_put:
+	intel_memory_region_destroy(mem);
+	return err;
+}
+
+#ifndef SZ_8G
+#define SZ_8G BIT_ULL(33)
+#endif
+
+static int igt_mock_max_segment(void *arg)
+{
+	struct intel_memory_region *mem = arg;
+	struct drm_i915_private *i915 = mem->i915;
+	struct i915_ttm_buddy_resource *res;
+	struct drm_i915_gem_object *obj;
+	struct drm_buddy_block *block;
+	struct drm_buddy *mm;
+	struct list_head *blocks;
+	struct scatterlist *sg;
+	I915_RND_STATE(prng);
+	LIST_HEAD(objects);
+	unsigned int max_segment;
+	unsigned int ps;
+	u64 size;
+	int err = 0;
+
+	/*
+	 * While we may create very large contiguous blocks, we may need
+	 * to break those down for consumption elsewhere. In particular,
+	 * dma-mapping with scatterlist elements have an implicit limit of
+	 * UINT_MAX on each element.
+	 */
+
+	size = SZ_8G;
+	ps = PAGE_SIZE;
+	if (i915_prandom_u64_state(&prng) & 1)
+		ps = SZ_64K; /* For something like DG2 */
+
+	max_segment = round_down(UINT_MAX, ps);
+
+	mem = mock_region_create(i915, 0, size, ps, 0, 0);
+	if (IS_ERR(mem))
+		return PTR_ERR(mem);
+
+	obj = igt_object_create(mem, &objects, size, 0);
+	if (IS_ERR(obj)) {
+		err = PTR_ERR(obj);
+		goto out_put;
+	}
+
+	res = to_ttm_buddy_resource(obj->mm.res);
+	blocks = &res->blocks;
+	mm = res->mm;
+	size = 0;
+	list_for_each_entry(block, blocks, link) {
+		if (drm_buddy_block_size(mm, block) > size)
+			size = drm_buddy_block_size(mm, block);
+	}
+	if (size < max_segment) {
+		pr_err("%s: Failed to create a huge contiguous block [> %u], largest block %lld\n",
+		       __func__, max_segment, size);
+		err = -EINVAL;
+		goto out_close;
+	}
+
+	for (sg = obj->mm.pages->sgl; sg; sg = sg_next(sg)) {
+		dma_addr_t daddr = sg_dma_address(sg);
+
+		if (sg->length > max_segment) {
+			pr_err("%s: Created an oversized scatterlist entry, %u > %u\n",
+			       __func__, sg->length, max_segment);
+			err = -EINVAL;
+			goto out_close;
+		}
+
+		if (!IS_ALIGNED(daddr, ps)) {
+			pr_err("%s: Created an unaligned scatterlist entry, addr=%pa, ps=%u\n",
+			       __func__,  &daddr, ps);
+			err = -EINVAL;
+			goto out_close;
+		}
+	}
+
+out_close:
+	close_objects(mem, &objects);
+out_put:
+	intel_memory_region_destroy(mem);
+	return err;
+}
+
+static u64 igt_object_mappable_total(struct drm_i915_gem_object *obj)
+{
+	struct intel_memory_region *mr = obj->mm.region;
+	struct i915_ttm_buddy_resource *bman_res =
+		to_ttm_buddy_resource(obj->mm.res);
+	struct drm_buddy *mm = bman_res->mm;
+	struct drm_buddy_block *block;
+	u64 total;
+
+	total = 0;
+	list_for_each_entry(block, &bman_res->blocks, link) {
+		u64 start = drm_buddy_block_offset(block);
+		u64 end = start + drm_buddy_block_size(mm, block);
+
+		if (start < mr->io_size)
+			total += min_t(u64, end, mr->io_size) - start;
+	}
+
+	return total;
+}
+
+static int igt_mock_io_size(void *arg)
+{
+	struct intel_memory_region *mr = arg;
+	struct drm_i915_private *i915 = mr->i915;
+	struct drm_i915_gem_object *obj;
+	u64 mappable_theft_total;
+	u64 io_size;
+	u64 total;
+	u64 ps;
+	u64 rem;
+	u64 size;
+	I915_RND_STATE(prng);
+	LIST_HEAD(objects);
+	int err = 0;
+
+	ps = SZ_4K;
+	if (i915_prandom_u64_state(&prng) & 1)
+		ps = SZ_64K; /* For something like DG2 */
+
+	div64_u64_rem(i915_prandom_u64_state(&prng), SZ_8G, &total);
+	total = round_down(total, ps);
+	total = max_t(u64, total, SZ_1G);
+
+	div64_u64_rem(i915_prandom_u64_state(&prng), total - ps, &io_size);
+	io_size = round_down(io_size, ps);
+	io_size = max_t(u64, io_size, SZ_256M); /* 256M seems to be the common lower limit */
+
+	pr_info("%s with ps=%llx, io_size=%llx, total=%llx\n",
+		__func__, ps, io_size, total);
+
+	mr = mock_region_create(i915, 0, total, ps, 0, io_size);
+	if (IS_ERR(mr)) {
+		err = PTR_ERR(mr);
+		goto out_err;
+	}
+
+	mappable_theft_total = 0;
+	rem = total - io_size;
+	do {
+		div64_u64_rem(i915_prandom_u64_state(&prng), rem, &size);
+		size = round_down(size, ps);
+		size = max(size, ps);
+
+		obj = igt_object_create(mr, &objects, size,
+					I915_BO_ALLOC_GPU_ONLY);
+		if (IS_ERR(obj)) {
+			pr_err("%s TOPDOWN failed with rem=%llx, size=%llx\n",
+			       __func__, rem, size);
+			err = PTR_ERR(obj);
+			goto out_close;
+		}
+
+		mappable_theft_total += igt_object_mappable_total(obj);
+		rem -= size;
+	} while (rem);
+
+	pr_info("%s mappable theft=(%lluMiB/%lluMiB), total=%lluMiB\n",
+		__func__,
+		(u64)mappable_theft_total >> 20,
+		(u64)io_size >> 20,
+		(u64)total >> 20);
+
+	/*
+	 * Even if we allocate all of the non-mappable portion, we should still
+	 * be able to dip into the mappable portion.
+	 */
+	obj = igt_object_create(mr, &objects, io_size,
+				I915_BO_ALLOC_GPU_ONLY);
+	if (IS_ERR(obj)) {
+		pr_err("%s allocation unexpectedly failed\n", __func__);
+		err = PTR_ERR(obj);
+		goto out_close;
+	}
+
+	close_objects(mr, &objects);
+
+	rem = io_size;
+	do {
+		div64_u64_rem(i915_prandom_u64_state(&prng), rem, &size);
+		size = round_down(size, ps);
+		size = max(size, ps);
+
+		obj = igt_object_create(mr, &objects, size, 0);
+		if (IS_ERR(obj)) {
+			pr_err("%s MAPPABLE failed with rem=%llx, size=%llx\n",
+			       __func__, rem, size);
+			err = PTR_ERR(obj);
+			goto out_close;
+		}
+
+		if (igt_object_mappable_total(obj) != size) {
+			pr_err("%s allocation is not mappable(size=%llx)\n",
+			       __func__, size);
+			err = -EINVAL;
+			goto out_close;
+		}
+		rem -= size;
+	} while (rem);
+
+	/*
+	 * We assume CPU access is required by default, which should result in a
+	 * failure here, even though the non-mappable portion is free.
+	 */
+	obj = igt_object_create(mr, &objects, ps, 0);
+	if (!IS_ERR(obj)) {
+		pr_err("%s allocation unexpectedly succeeded\n", __func__);
+		err = -EINVAL;
+		goto out_close;
+	}
+
+out_close:
+	close_objects(mr, &objects);
+	intel_memory_region_destroy(mr);
+out_err:
+	if (err == -ENOMEM)
+		err = 0;
+
+	return err;
+}
+
+static int igt_gpu_write_dw(struct intel_context *ce,
+			    struct i915_vma *vma,
+			    u32 dword,
+			    u32 value)
+{
+	return igt_gpu_fill_dw(ce, vma, dword * sizeof(u32),
+			       vma->size >> PAGE_SHIFT, value);
+}
+
+static int igt_cpu_check(struct drm_i915_gem_object *obj, u32 dword, u32 val)
+{
+	unsigned long n = obj->base.size >> PAGE_SHIFT;
+	u32 *ptr;
+	int err;
+
+	err = i915_gem_object_wait(obj, 0, MAX_SCHEDULE_TIMEOUT);
+	if (err)
+		return err;
+
+	ptr = i915_gem_object_pin_map(obj, I915_MAP_WC);
+	if (IS_ERR(ptr))
+		return PTR_ERR(ptr);
+
+	ptr += dword;
+	while (n--) {
+		if (*ptr != val) {
+			pr_err("base[%u]=%08x, val=%08x\n",
+			       dword, *ptr, val);
+			err = -EINVAL;
+			break;
+		}
+
+		ptr += PAGE_SIZE / sizeof(*ptr);
+	}
+
+	i915_gem_object_unpin_map(obj);
+	return err;
+}
+
+static int igt_gpu_write(struct i915_gem_context *ctx,
+			 struct drm_i915_gem_object *obj)
+{
+	struct i915_gem_engines *engines;
+	struct i915_gem_engines_iter it;
+	struct i915_address_space *vm;
+	struct intel_context *ce;
+	I915_RND_STATE(prng);
+	IGT_TIMEOUT(end_time);
+	unsigned int count;
+	struct i915_vma *vma;
+	int *order;
+	int i, n;
+	int err = 0;
+
+	GEM_BUG_ON(!i915_gem_object_has_pinned_pages(obj));
+
+	n = 0;
+	count = 0;
+	for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it) {
+		count++;
+		if (!intel_engine_can_store_dword(ce->engine))
+			continue;
+
+		vm = ce->vm;
+		n++;
+	}
+	i915_gem_context_unlock_engines(ctx);
+	if (!n)
+		return 0;
+
+	order = i915_random_order(count * count, &prng);
+	if (!order)
+		return -ENOMEM;
+
+	vma = i915_vma_instance(obj, vm, NULL);
+	if (IS_ERR(vma)) {
+		err = PTR_ERR(vma);
+		goto out_free;
+	}
+
+	err = i915_vma_pin(vma, 0, 0, PIN_USER);
+	if (err)
+		goto out_free;
+
+	i = 0;
+	engines = i915_gem_context_lock_engines(ctx);
+	do {
+		u32 rng = prandom_u32_state(&prng);
+		u32 dword = offset_in_page(rng) / 4;
+
+		ce = engines->engines[order[i] % engines->num_engines];
+		i = (i + 1) % (count * count);
+		if (!ce || !intel_engine_can_store_dword(ce->engine))
+			continue;
+
+		err = igt_gpu_write_dw(ce, vma, dword, rng);
+		if (err)
+			break;
+
+		i915_gem_object_lock(obj, NULL);
+		err = igt_cpu_check(obj, dword, rng);
+		i915_gem_object_unlock(obj);
+		if (err)
+			break;
+	} while (!__igt_timeout(end_time, NULL));
+	i915_gem_context_unlock_engines(ctx);
+
+out_free:
+	kfree(order);
+
+	if (err == -ENOMEM)
+		err = 0;
+
+	return err;
+}
+
+static int igt_lmem_create(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct drm_i915_gem_object *obj;
+	int err = 0;
+
+	obj = i915_gem_object_create_lmem(i915, PAGE_SIZE, 0);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	err = i915_gem_object_pin_pages_unlocked(obj);
+	if (err)
+		goto out_put;
+
+	i915_gem_object_unpin_pages(obj);
+out_put:
+	i915_gem_object_put(obj);
+
+	return err;
+}
+
+static int igt_lmem_create_with_ps(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	int err = 0;
+	u32 ps;
+
+	for (ps = PAGE_SIZE; ps <= SZ_1G; ps <<= 1) {
+		struct drm_i915_gem_object *obj;
+		dma_addr_t daddr;
+
+		obj = __i915_gem_object_create_lmem_with_ps(i915, ps, ps, 0);
+		if (IS_ERR(obj)) {
+			err = PTR_ERR(obj);
+			if (err == -ENXIO || err == -E2BIG) {
+				pr_info("%s not enough lmem for ps(%u) err=%d\n",
+					__func__, ps, err);
+				err = 0;
+			}
+
+			break;
+		}
+
+		if (obj->base.size != ps) {
+			pr_err("%s size(%zu) != ps(%u)\n",
+			       __func__, obj->base.size, ps);
+			err = -EINVAL;
+			goto out_put;
+		}
+
+		i915_gem_object_lock(obj, NULL);
+		err = i915_gem_object_pin_pages(obj);
+		if (err) {
+			if (err == -ENXIO || err == -E2BIG || err == -ENOMEM) {
+				pr_info("%s not enough lmem for ps(%u) err=%d\n",
+					__func__, ps, err);
+				err = 0;
+			}
+			goto out_put;
+		}
+
+		daddr = i915_gem_object_get_dma_address(obj, 0);
+		if (!IS_ALIGNED(daddr, ps)) {
+			pr_err("%s daddr(%pa) not aligned with ps(%u)\n",
+			       __func__, &daddr, ps);
+			err = -EINVAL;
+			goto out_unpin;
+		}
+
+out_unpin:
+		i915_gem_object_unpin_pages(obj);
+		__i915_gem_object_put_pages(obj);
+out_put:
+		i915_gem_object_unlock(obj);
+		i915_gem_object_put(obj);
+
+		if (err)
+			break;
+	}
+
+	return err;
+}
+
+static int igt_lmem_create_cleared_cpu(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	I915_RND_STATE(prng);
+	IGT_TIMEOUT(end_time);
+	u32 size, i;
+	int err;
+
+	i915_gem_drain_freed_objects(i915);
+
+	size = max_t(u32, PAGE_SIZE, i915_prandom_u32_max_state(SZ_32M, &prng));
+	size = round_up(size, PAGE_SIZE);
+	i = 0;
+
+	do {
+		struct drm_i915_gem_object *obj;
+		unsigned int flags;
+		u32 dword, val;
+		void *vaddr;
+
+		/*
+		 * Alternate between cleared and uncleared allocations, while
+		 * also dirtying the pages each time to check that the pages are
+		 * always cleared if requested, since we should get some overlap
+		 * of the underlying pages, if not all, since we are the only
+		 * user.
+		 */
+
+		flags = I915_BO_ALLOC_CPU_CLEAR;
+		if (i & 1)
+			flags = 0;
+
+		obj = i915_gem_object_create_lmem(i915, size, flags);
+		if (IS_ERR(obj))
+			return PTR_ERR(obj);
+
+		i915_gem_object_lock(obj, NULL);
+		err = i915_gem_object_pin_pages(obj);
+		if (err)
+			goto out_put;
+
+		dword = i915_prandom_u32_max_state(PAGE_SIZE / sizeof(u32),
+						   &prng);
+
+		if (flags & I915_BO_ALLOC_CPU_CLEAR) {
+			err = igt_cpu_check(obj, dword, 0);
+			if (err) {
+				pr_err("%s failed with size=%u, flags=%u\n",
+				       __func__, size, flags);
+				goto out_unpin;
+			}
+		}
+
+		vaddr = i915_gem_object_pin_map(obj, I915_MAP_WC);
+		if (IS_ERR(vaddr)) {
+			err = PTR_ERR(vaddr);
+			goto out_unpin;
+		}
+
+		val = prandom_u32_state(&prng);
+
+		memset32(vaddr, val, obj->base.size / sizeof(u32));
+
+		i915_gem_object_flush_map(obj);
+		i915_gem_object_unpin_map(obj);
+out_unpin:
+		i915_gem_object_unpin_pages(obj);
+		__i915_gem_object_put_pages(obj);
+out_put:
+		i915_gem_object_unlock(obj);
+		i915_gem_object_put(obj);
+
+		if (err)
+			break;
+		++i;
+	} while (!__igt_timeout(end_time, NULL));
+
+	pr_info("%s completed (%u) iterations\n", __func__, i);
+
+	return err;
+}
+
+static int igt_lmem_write_gpu(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct drm_i915_gem_object *obj;
+	struct i915_gem_context *ctx;
+	struct file *file;
+	I915_RND_STATE(prng);
+	u32 sz;
+	int err;
+
+	file = mock_file(i915);
+	if (IS_ERR(file))
+		return PTR_ERR(file);
+
+	ctx = live_context(i915, file);
+	if (IS_ERR(ctx)) {
+		err = PTR_ERR(ctx);
+		goto out_file;
+	}
+
+	sz = round_up(prandom_u32_state(&prng) % SZ_32M, PAGE_SIZE);
+
+	obj = i915_gem_object_create_lmem(i915, sz, 0);
+	if (IS_ERR(obj)) {
+		err = PTR_ERR(obj);
+		goto out_file;
+	}
+
+	err = i915_gem_object_pin_pages_unlocked(obj);
+	if (err)
+		goto out_put;
+
+	err = igt_gpu_write(ctx, obj);
+	if (err)
+		pr_err("igt_gpu_write failed(%d)\n", err);
+
+	i915_gem_object_unpin_pages(obj);
+out_put:
+	i915_gem_object_put(obj);
+out_file:
+	fput(file);
+	return err;
+}
+
+static struct intel_engine_cs *
+random_engine_class(struct drm_i915_private *i915,
+		    unsigned int class,
+		    struct rnd_state *prng)
+{
+	struct intel_engine_cs *engine;
+	unsigned int count;
+
+	count = 0;
+	for (engine = intel_engine_lookup_user(i915, class, 0);
+	     engine && engine->uabi_class == class;
+	     engine = rb_entry_safe(rb_next(&engine->uabi_node),
+				    typeof(*engine), uabi_node))
+		count++;
+
+	count = i915_prandom_u32_max_state(count, prng);
+	return intel_engine_lookup_user(i915, class, count);
+}
+
+static int igt_lmem_write_cpu(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	struct drm_i915_gem_object *obj;
+	I915_RND_STATE(prng);
+	IGT_TIMEOUT(end_time);
+	u32 bytes[] = {
+		0, /* rng placeholder */
+		sizeof(u32),
+		sizeof(u64),
+		64, /* cl */
+		PAGE_SIZE,
+		PAGE_SIZE - sizeof(u32),
+		PAGE_SIZE - sizeof(u64),
+		PAGE_SIZE - 64,
+	};
+	struct intel_engine_cs *engine;
+	struct i915_request *rq;
+	u32 *vaddr;
+	u32 sz;
+	u32 i;
+	int *order;
+	int count;
+	int err;
+
+	engine = random_engine_class(i915, I915_ENGINE_CLASS_COPY, &prng);
+	if (!engine)
+		return 0;
+
+	pr_info("%s: using %s\n", __func__, engine->name);
+
+	sz = round_up(prandom_u32_state(&prng) % SZ_32M, PAGE_SIZE);
+	sz = max_t(u32, 2 * PAGE_SIZE, sz);
+
+	obj = i915_gem_object_create_lmem(i915, sz, I915_BO_ALLOC_CONTIGUOUS);
+	if (IS_ERR(obj))
+		return PTR_ERR(obj);
+
+	vaddr = i915_gem_object_pin_map_unlocked(obj, I915_MAP_WC);
+	if (IS_ERR(vaddr)) {
+		err = PTR_ERR(vaddr);
+		goto out_put;
+	}
+
+	i915_gem_object_lock(obj, NULL);
+
+	err = dma_resv_reserve_fences(obj->base.resv, 1);
+	if (err) {
+		i915_gem_object_unlock(obj);
+		goto out_put;
+	}
+
+	/* Put the pages into a known state -- from the gpu for added fun */
+	intel_engine_pm_get(engine);
+	err = intel_context_migrate_clear(engine->gt->migrate.context, NULL,
+					  obj->mm.pages->sgl,
+					  i915_gem_get_pat_index(i915,
+								 I915_CACHE_NONE),
+					  true, 0xdeadbeaf, &rq);
+	if (rq) {
+		dma_resv_add_fence(obj->base.resv, &rq->fence,
+				   DMA_RESV_USAGE_WRITE);
+		i915_request_put(rq);
+	}
+
+	intel_engine_pm_put(engine);
+	if (!err)
+		err = i915_gem_object_set_to_wc_domain(obj, true);
+	i915_gem_object_unlock(obj);
+	if (err)
+		goto out_unpin;
+
+	count = ARRAY_SIZE(bytes);
+	order = i915_random_order(count * count, &prng);
+	if (!order) {
+		err = -ENOMEM;
+		goto out_unpin;
+	}
+
+	/* A random multiple of u32, picked between [64, PAGE_SIZE - 64] */
+	bytes[0] = igt_random_offset(&prng, 64, PAGE_SIZE - 64, 0, sizeof(u32));
+	GEM_BUG_ON(!IS_ALIGNED(bytes[0], sizeof(u32)));
+
+	i = 0;
+	do {
+		u32 offset;
+		u32 align;
+		u32 dword;
+		u32 size;
+		u32 val;
+
+		size = bytes[order[i] % count];
+		i = (i + 1) % (count * count);
+
+		align = bytes[order[i] % count];
+		i = (i + 1) % (count * count);
+
+		align = max_t(u32, sizeof(u32), rounddown_pow_of_two(align));
+
+		offset = igt_random_offset(&prng, 0, obj->base.size,
+					   size, align);
+
+		val = prandom_u32_state(&prng);
+		memset32(vaddr + offset / sizeof(u32), val ^ 0xdeadbeaf,
+			 size / sizeof(u32));
+
+		/*
+		 * Sample random dw -- don't waste precious time reading every
+		 * single dw.
+		 */
+		dword = igt_random_offset(&prng, offset,
+					  offset + size,
+					  sizeof(u32), sizeof(u32));
+		dword /= sizeof(u32);
+		if (vaddr[dword] != (val ^ 0xdeadbeaf)) {
+			pr_err("%s vaddr[%u]=%u, val=%u, size=%u, align=%u, offset=%u\n",
+			       __func__, dword, vaddr[dword], val ^ 0xdeadbeaf,
+			       size, align, offset);
+			err = -EINVAL;
+			break;
+		}
+	} while (!__igt_timeout(end_time, NULL));
+
+out_unpin:
+	i915_gem_object_unpin_map(obj);
+out_put:
+	i915_gem_object_put(obj);
+
+	return err;
+}
+
+static const char *repr_type(u32 type)
+{
+	switch (type) {
+	case I915_MAP_WB:
+		return "WB";
+	case I915_MAP_WC:
+		return "WC";
+	}
+
+	return "";
+}
+
+static struct drm_i915_gem_object *
+create_region_for_mapping(struct intel_memory_region *mr, u64 size, u32 type,
+			  void **out_addr)
+{
+	struct drm_i915_gem_object *obj;
+	void *addr;
+
+	obj = i915_gem_object_create_region(mr, size, 0, 0);
+	if (IS_ERR(obj)) {
+		if (PTR_ERR(obj) == -ENOSPC) /* Stolen memory */
+			return ERR_PTR(-ENODEV);
+		return obj;
+	}
+
+	addr = i915_gem_object_pin_map_unlocked(obj, type);
+	if (IS_ERR(addr)) {
+		i915_gem_object_put(obj);
+		if (PTR_ERR(addr) == -ENXIO)
+			return ERR_PTR(-ENODEV);
+		return addr;
+	}
+
+	*out_addr = addr;
+	return obj;
+}
+
+static int wrap_ktime_compare(const void *A, const void *B)
+{
+	const ktime_t *a = A, *b = B;
+
+	return ktime_compare(*a, *b);
+}
+
+static void igt_memcpy_long(void *dst, const void *src, size_t size)
+{
+	unsigned long *tmp = dst;
+	const unsigned long *s = src;
+
+	size = size / sizeof(unsigned long);
+	while (size--)
+		*tmp++ = *s++;
+}
+
+static inline void igt_memcpy(void *dst, const void *src, size_t size)
+{
+	memcpy(dst, src, size);
+}
+
+static inline void igt_memcpy_from_wc(void *dst, const void *src, size_t size)
+{
+	i915_memcpy_from_wc(dst, src, size);
+}
+
+static int _perf_memcpy(struct intel_memory_region *src_mr,
+			struct intel_memory_region *dst_mr,
+			u64 size, u32 src_type, u32 dst_type)
+{
+	struct drm_i915_private *i915 = src_mr->i915;
+	const struct {
+		const char *name;
+		void (*copy)(void *dst, const void *src, size_t size);
+		bool skip;
+	} tests[] = {
+		{
+			"memcpy",
+			igt_memcpy,
+		},
+		{
+			"memcpy_long",
+			igt_memcpy_long,
+		},
+		{
+			"memcpy_from_wc",
+			igt_memcpy_from_wc,
+			!i915_has_memcpy_from_wc(),
+		},
+	};
+	struct drm_i915_gem_object *src, *dst;
+	void *src_addr, *dst_addr;
+	int ret = 0;
+	int i;
+
+	src = create_region_for_mapping(src_mr, size, src_type, &src_addr);
+	if (IS_ERR(src)) {
+		ret = PTR_ERR(src);
+		goto out;
+	}
+
+	dst = create_region_for_mapping(dst_mr, size, dst_type, &dst_addr);
+	if (IS_ERR(dst)) {
+		ret = PTR_ERR(dst);
+		goto out_unpin_src;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(tests); ++i) {
+		ktime_t t[5];
+		int pass;
+
+		if (tests[i].skip)
+			continue;
+
+		for (pass = 0; pass < ARRAY_SIZE(t); pass++) {
+			ktime_t t0, t1;
+
+			t0 = ktime_get();
+
+			tests[i].copy(dst_addr, src_addr, size);
+
+			t1 = ktime_get();
+			t[pass] = ktime_sub(t1, t0);
+		}
+
+		sort(t, ARRAY_SIZE(t), sizeof(*t), wrap_ktime_compare, NULL);
+		if (t[0] <= 0) {
+			/* ignore the impossible to protect our sanity */
+			pr_debug("Skipping %s src(%s, %s) -> dst(%s, %s) %14s %4lluKiB copy, unstable measurement [%lld, %lld]\n",
+				 __func__,
+				 src_mr->name, repr_type(src_type),
+				 dst_mr->name, repr_type(dst_type),
+				 tests[i].name, size >> 10,
+				 t[0], t[4]);
+			continue;
+		}
+
+		pr_info("%s src(%s, %s) -> dst(%s, %s) %14s %4llu KiB copy: %5lld MiB/s\n",
+			__func__,
+			src_mr->name, repr_type(src_type),
+			dst_mr->name, repr_type(dst_type),
+			tests[i].name, size >> 10,
+			div64_u64(mul_u32_u32(4 * size,
+					      1000 * 1000 * 1000),
+				  t[1] + 2 * t[2] + t[3]) >> 20);
+
+		cond_resched();
+	}
+
+	i915_gem_object_unpin_map(dst);
+	i915_gem_object_put(dst);
+out_unpin_src:
+	i915_gem_object_unpin_map(src);
+	i915_gem_object_put(src);
+
+	i915_gem_drain_freed_objects(i915);
+out:
+	if (ret == -ENODEV)
+		ret = 0;
+
+	return ret;
+}
+
+static int perf_memcpy(void *arg)
+{
+	struct drm_i915_private *i915 = arg;
+	static const u32 types[] = {
+		I915_MAP_WB,
+		I915_MAP_WC,
+	};
+	static const u32 sizes[] = {
+		SZ_4K,
+		SZ_64K,
+		SZ_4M,
+	};
+	struct intel_memory_region *src_mr, *dst_mr;
+	int src_id, dst_id;
+	int i, j, k;
+	int ret;
+
+	for_each_memory_region(src_mr, i915, src_id) {
+		for_each_memory_region(dst_mr, i915, dst_id) {
+			for (i = 0; i < ARRAY_SIZE(sizes); ++i) {
+				for (j = 0; j < ARRAY_SIZE(types); ++j) {
+					for (k = 0; k < ARRAY_SIZE(types); ++k) {
+						ret = _perf_memcpy(src_mr,
+								   dst_mr,
+								   sizes[i],
+								   types[j],
+								   types[k]);
+						if (ret)
+							return ret;
+					}
+				}
+			}
+		}
+	}
+
+	return 0;
+}
+
+int intel_memory_region_mock_selftests(void)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_mock_reserve),
+		SUBTEST(igt_mock_fill),
+		SUBTEST(igt_mock_contiguous),
+		SUBTEST(igt_mock_splintered_region),
+		SUBTEST(igt_mock_max_segment),
+		SUBTEST(igt_mock_io_size),
+	};
+	struct intel_memory_region *mem;
+	struct drm_i915_private *i915;
+	int err;
+
+	i915 = mock_gem_device();
+	if (!i915)
+		return -ENOMEM;
+
+	mem = mock_region_create(i915, 0, SZ_2G, I915_GTT_PAGE_SIZE_4K, 0, 0);
+	if (IS_ERR(mem)) {
+		pr_err("failed to create memory region\n");
+		err = PTR_ERR(mem);
+		goto out_unref;
+	}
+
+	err = i915_subtests(tests, mem);
+
+	intel_memory_region_destroy(mem);
+out_unref:
+	mock_destroy_device(i915);
+	return err;
+}
+
+int intel_memory_region_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_lmem_create),
+		SUBTEST(igt_lmem_create_with_ps),
+		SUBTEST(igt_lmem_create_cleared_cpu),
+		SUBTEST(igt_lmem_write_cpu),
+		SUBTEST(igt_lmem_write_gpu),
+	};
+
+	if (!HAS_LMEM(i915)) {
+		pr_info("device lacks LMEM support, skipping\n");
+		return 0;
+	}
+
+	if (intel_gt_is_wedged(to_gt(i915)))
+		return 0;
+
+	return i915_live_subtests(tests, i915);
+}
+
+int intel_memory_region_perf_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(perf_memcpy),
+	};
+
+	if (intel_gt_is_wedged(to_gt(i915)))
+		return 0;
+
+	return i915_live_subtests(tests, i915);
+}
diff --git a/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c b/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c
new file mode 100644
index 0000000000..2990dd4d4a
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.c
@@ -0,0 +1,99 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+//#include "gt/intel_engine_user.h"
+#include "gt/intel_gt.h"
+#include "i915_drv.h"
+#include "i915_selftest.h"
+
+#include "selftests/intel_scheduler_helpers.h"
+
+#define REDUCED_TIMESLICE	5
+#define REDUCED_PREEMPT		10
+#define WAIT_FOR_RESET_TIME	10000
+
+struct intel_engine_cs *intel_selftest_find_any_engine(struct intel_gt *gt)
+{
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+
+	for_each_engine(engine, gt, id)
+		return engine;
+
+	pr_err("No valid engine found!\n");
+	return NULL;
+}
+
+int intel_selftest_modify_policy(struct intel_engine_cs *engine,
+				 struct intel_selftest_saved_policy *saved,
+				 enum selftest_scheduler_modify modify_type)
+{
+	int err;
+
+	saved->reset = engine->i915->params.reset;
+	saved->flags = engine->flags;
+	saved->timeslice = engine->props.timeslice_duration_ms;
+	saved->preempt_timeout = engine->props.preempt_timeout_ms;
+
+	switch (modify_type) {
+	case SELFTEST_SCHEDULER_MODIFY_FAST_RESET:
+		/*
+		 * Enable force pre-emption on time slice expiration
+		 * together with engine reset on pre-emption timeout.
+		 * This is required to make the GuC notice and reset
+		 * the single hanging context.
+		 * Also, reduce the preemption timeout to something
+		 * small to speed the test up.
+		 */
+		engine->i915->params.reset = 2;
+		engine->flags |= I915_ENGINE_WANT_FORCED_PREEMPTION;
+		engine->props.timeslice_duration_ms = REDUCED_TIMESLICE;
+		engine->props.preempt_timeout_ms = REDUCED_PREEMPT;
+		break;
+
+	case SELFTEST_SCHEDULER_MODIFY_NO_HANGCHECK:
+		engine->props.preempt_timeout_ms = 0;
+		break;
+
+	default:
+		pr_err("Invalid scheduler policy modification type: %d!\n", modify_type);
+		return -EINVAL;
+	}
+
+	if (!intel_engine_uses_guc(engine))
+		return 0;
+
+	err = intel_guc_global_policies_update(&engine->gt->uc.guc);
+	if (err)
+		intel_selftest_restore_policy(engine, saved);
+
+	return err;
+}
+
+int intel_selftest_restore_policy(struct intel_engine_cs *engine,
+				  struct intel_selftest_saved_policy *saved)
+{
+	/* Restore the original policies */
+	engine->i915->params.reset = saved->reset;
+	engine->flags = saved->flags;
+	engine->props.timeslice_duration_ms = saved->timeslice;
+	engine->props.preempt_timeout_ms = saved->preempt_timeout;
+
+	if (!intel_engine_uses_guc(engine))
+		return 0;
+
+	return intel_guc_global_policies_update(&engine->gt->uc.guc);
+}
+
+int intel_selftest_wait_for_rq(struct i915_request *rq)
+{
+	long ret;
+
+	ret = i915_request_wait(rq, 0, WAIT_FOR_RESET_TIME);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.h b/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.h
new file mode 100644
index 0000000000..ae60bb507f
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/intel_scheduler_helpers.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef _INTEL_SELFTEST_SCHEDULER_HELPERS_H_
+#define _INTEL_SELFTEST_SCHEDULER_HELPERS_H_
+
+#include <linux/types.h>
+
+struct i915_request;
+struct intel_engine_cs;
+struct intel_gt;
+
+struct intel_selftest_saved_policy {
+	u32 flags;
+	u32 reset;
+	u64 timeslice;
+	u64 preempt_timeout;
+};
+
+enum selftest_scheduler_modify {
+	SELFTEST_SCHEDULER_MODIFY_NO_HANGCHECK = 0,
+	SELFTEST_SCHEDULER_MODIFY_FAST_RESET,
+};
+
+struct intel_engine_cs *intel_selftest_find_any_engine(struct intel_gt *gt);
+int intel_selftest_modify_policy(struct intel_engine_cs *engine,
+				 struct intel_selftest_saved_policy *saved,
+				 enum selftest_scheduler_modify modify_type);
+int intel_selftest_restore_policy(struct intel_engine_cs *engine,
+				  struct intel_selftest_saved_policy *saved);
+int intel_selftest_wait_for_rq(struct i915_request *rq);
+
+#endif
diff --git a/drivers/gpu/drm/i915/selftests/intel_uncore.c b/drivers/gpu/drm/i915/selftests/intel_uncore.c
new file mode 100644
index 0000000000..03ea75cd84
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/intel_uncore.c
@@ -0,0 +1,354 @@
+/*
+ * 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"
+
+static int intel_fw_table_check(const struct intel_forcewake_range *ranges,
+				unsigned int num_ranges,
+				bool is_watertight)
+{
+	unsigned int i;
+	s32 prev;
+
+	for (i = 0, prev = -1; i < num_ranges; i++, ranges++) {
+		/* Check that the table is watertight */
+		if (is_watertight && (prev + 1) != (s32)ranges->start) {
+			pr_err("%s: entry[%d]:(%x, %x) is not watertight to previous (%x)\n",
+			       __func__, i, ranges->start, ranges->end, prev);
+			return -EINVAL;
+		}
+
+		/* Check that the table never goes backwards */
+		if (prev >= (s32)ranges->start) {
+			pr_err("%s: entry[%d]:(%x, %x) is less than the previous (%x)\n",
+			       __func__, i, ranges->start, ranges->end, prev);
+			return -EINVAL;
+		}
+
+		/* Check that the entry is valid */
+		if (ranges->start >= ranges->end) {
+			pr_err("%s: entry[%d]:(%x, %x) has negative length\n",
+			       __func__, i, ranges->start, ranges->end);
+			return -EINVAL;
+		}
+
+		prev = ranges->end;
+	}
+
+	return 0;
+}
+
+static int intel_shadow_table_check(void)
+{
+	struct {
+		const struct i915_range *regs;
+		unsigned int size;
+	} range_lists[] = {
+		{ gen8_shadowed_regs, ARRAY_SIZE(gen8_shadowed_regs) },
+		{ gen11_shadowed_regs, ARRAY_SIZE(gen11_shadowed_regs) },
+		{ gen12_shadowed_regs, ARRAY_SIZE(gen12_shadowed_regs) },
+		{ dg2_shadowed_regs, ARRAY_SIZE(dg2_shadowed_regs) },
+		{ pvc_shadowed_regs, ARRAY_SIZE(pvc_shadowed_regs) },
+		{ mtl_shadowed_regs, ARRAY_SIZE(mtl_shadowed_regs) },
+		{ xelpmp_shadowed_regs, ARRAY_SIZE(xelpmp_shadowed_regs) },
+	};
+	const struct i915_range *range;
+	unsigned int i, j;
+	s32 prev;
+
+	for (j = 0; j < ARRAY_SIZE(range_lists); ++j) {
+		range = range_lists[j].regs;
+		for (i = 0, prev = -1; i < range_lists[j].size; i++, range++) {
+			if (range->end < range->start) {
+				pr_err("%s: range[%d]:(%06x-%06x) has end before start\n",
+				       __func__, i, range->start, range->end);
+				return -EINVAL;
+			}
+
+			if (prev >= (s32)range->start) {
+				pr_err("%s: range[%d]:(%06x-%06x) is before end of previous (%06x)\n",
+				       __func__, i, range->start, range->end, prev);
+				return -EINVAL;
+			}
+
+			if (range->start % 4) {
+				pr_err("%s: range[%d]:(%06x-%06x) has non-dword-aligned start\n",
+				       __func__, i, range->start, range->end);
+				return -EINVAL;
+			}
+
+			prev = range->end;
+		}
+	}
+
+	return 0;
+}
+
+int intel_uncore_mock_selftests(void)
+{
+	struct {
+		const struct intel_forcewake_range *ranges;
+		unsigned int num_ranges;
+		bool is_watertight;
+	} fw[] = {
+		{ __vlv_fw_ranges, ARRAY_SIZE(__vlv_fw_ranges), false },
+		{ __chv_fw_ranges, ARRAY_SIZE(__chv_fw_ranges), false },
+		{ __gen9_fw_ranges, ARRAY_SIZE(__gen9_fw_ranges), true },
+		{ __gen11_fw_ranges, ARRAY_SIZE(__gen11_fw_ranges), true },
+		{ __gen12_fw_ranges, ARRAY_SIZE(__gen12_fw_ranges), true },
+		{ __xehp_fw_ranges, ARRAY_SIZE(__xehp_fw_ranges), true },
+		{ __pvc_fw_ranges, ARRAY_SIZE(__pvc_fw_ranges), true },
+		{ __mtl_fw_ranges, ARRAY_SIZE(__mtl_fw_ranges), true },
+		{ __xelpmp_fw_ranges, ARRAY_SIZE(__xelpmp_fw_ranges), true },
+	};
+	int err, i;
+
+	for (i = 0; i < ARRAY_SIZE(fw); i++) {
+		err = intel_fw_table_check(fw[i].ranges,
+					   fw[i].num_ranges,
+					   fw[i].is_watertight);
+		if (err)
+			return err;
+	}
+
+	err = intel_shadow_table_check();
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static int live_forcewake_ops(void *arg)
+{
+	static const struct reg {
+		const char *name;
+		u8 min_graphics_ver;
+		u8 max_graphics_ver;
+		unsigned long platforms;
+		unsigned int offset;
+	} registers[] = {
+		{
+			"RING_START",
+			6, 7,
+			0x38,
+		},
+		{
+			"RING_MI_MODE",
+			8, U8_MAX,
+			0x9c,
+		}
+	};
+	const struct reg *r;
+	struct intel_gt *gt = arg;
+	struct intel_uncore_forcewake_domain *domain;
+	struct intel_uncore *uncore = gt->uncore;
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+	intel_wakeref_t wakeref;
+	unsigned int tmp;
+	int err = 0;
+
+	GEM_BUG_ON(gt->awake);
+
+	/* vlv/chv with their pcu behave differently wrt reads */
+	if (IS_VALLEYVIEW(gt->i915) || IS_CHERRYVIEW(gt->i915)) {
+		pr_debug("PCU fakes forcewake badly; skipping\n");
+		return 0;
+	}
+
+	/*
+	 * Not quite as reliable across the gen as one would hope.
+	 *
+	 * Either our theory of operation is incorrect, or there remain
+	 * external parties interfering with the powerwells.
+	 *
+	 * https://bugs.freedesktop.org/show_bug.cgi?id=110210
+	 */
+	if (!IS_ENABLED(CONFIG_DRM_I915_SELFTEST_BROKEN))
+		return 0;
+
+	/* We have to pick carefully to get the exact behaviour we need */
+	for (r = registers; r->name; r++)
+		if (IS_GRAPHICS_VER(gt->i915, r->min_graphics_ver, r->max_graphics_ver))
+			break;
+	if (!r->name) {
+		pr_debug("Forcewaked register not known for %s; skipping\n",
+			 intel_platform_name(INTEL_INFO(gt->i915)->platform));
+		return 0;
+	}
+
+	wakeref = intel_runtime_pm_get(uncore->rpm);
+
+	for_each_fw_domain(domain, uncore, tmp) {
+		smp_store_mb(domain->active, false);
+		if (!hrtimer_cancel(&domain->timer))
+			continue;
+
+		intel_uncore_fw_release_timer(&domain->timer);
+	}
+
+	for_each_engine(engine, gt, id) {
+		i915_reg_t mmio = _MMIO(engine->mmio_base + r->offset);
+		u32 __iomem *reg = intel_uncore_regs(uncore) + engine->mmio_base + r->offset;
+		enum forcewake_domains fw_domains;
+		u32 val;
+
+		if (!engine->default_state)
+			continue;
+
+		fw_domains = intel_uncore_forcewake_for_reg(uncore, mmio,
+							    FW_REG_READ);
+		if (!fw_domains)
+			continue;
+
+		for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
+			if (!domain->wake_count)
+				continue;
+
+			pr_err("fw_domain %s still active, aborting test!\n",
+			       intel_uncore_forcewake_domain_to_str(domain->id));
+			err = -EINVAL;
+			goto out_rpm;
+		}
+
+		intel_uncore_forcewake_get(uncore, fw_domains);
+		val = readl(reg);
+		intel_uncore_forcewake_put(uncore, fw_domains);
+
+		/* Flush the forcewake release (delayed onto a timer) */
+		for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
+			smp_store_mb(domain->active, false);
+			if (hrtimer_cancel(&domain->timer))
+				intel_uncore_fw_release_timer(&domain->timer);
+
+			preempt_disable();
+			err = wait_ack_clear(domain, FORCEWAKE_KERNEL);
+			preempt_enable();
+			if (err) {
+				pr_err("Failed to clear fw_domain %s\n",
+				       intel_uncore_forcewake_domain_to_str(domain->id));
+				goto out_rpm;
+			}
+		}
+
+		if (!val) {
+			pr_err("%s:%s was zero while fw was held!\n",
+			       engine->name, r->name);
+			err = -EINVAL;
+			goto out_rpm;
+		}
+
+		/* We then expect the read to return 0 outside of the fw */
+		if (wait_for(readl(reg) == 0, 100)) {
+			pr_err("%s:%s=%0x, fw_domains 0x%x still up after 100ms!\n",
+			       engine->name, r->name, readl(reg), fw_domains);
+			err = -ETIMEDOUT;
+			goto out_rpm;
+		}
+	}
+
+out_rpm:
+	intel_runtime_pm_put(uncore->rpm, wakeref);
+	return err;
+}
+
+static int live_forcewake_domains(void *arg)
+{
+#define FW_RANGE 0x40000
+	struct intel_gt *gt = arg;
+	struct intel_uncore *uncore = gt->uncore;
+	unsigned long *valid;
+	u32 offset;
+	int err;
+
+	if (!HAS_FPGA_DBG_UNCLAIMED(gt->i915) &&
+	    !IS_VALLEYVIEW(gt->i915) &&
+	    !IS_CHERRYVIEW(gt->i915))
+		return 0;
+
+	/*
+	 * This test may lockup the machine or cause GPU hangs afterwards.
+	 */
+	if (!IS_ENABLED(CONFIG_DRM_I915_SELFTEST_BROKEN))
+		return 0;
+
+	valid = bitmap_zalloc(FW_RANGE, GFP_KERNEL);
+	if (!valid)
+		return -ENOMEM;
+
+	intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
+
+	check_for_unclaimed_mmio(uncore);
+	for (offset = 0; offset < FW_RANGE; offset += 4) {
+		i915_reg_t reg = { offset };
+
+		intel_uncore_posting_read_fw(uncore, reg);
+		if (!check_for_unclaimed_mmio(uncore))
+			set_bit(offset, valid);
+	}
+
+	intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
+
+	err = 0;
+	for_each_set_bit(offset, valid, FW_RANGE) {
+		i915_reg_t reg = { offset };
+
+		iosf_mbi_punit_acquire();
+		intel_uncore_forcewake_reset(uncore);
+		iosf_mbi_punit_release();
+
+		check_for_unclaimed_mmio(uncore);
+
+		intel_uncore_posting_read_fw(uncore, reg);
+		if (check_for_unclaimed_mmio(uncore)) {
+			pr_err("Unclaimed mmio read to register 0x%04x\n",
+			       offset);
+			err = -EINVAL;
+		}
+	}
+
+	bitmap_free(valid);
+	return err;
+}
+
+static int live_fw_table(void *arg)
+{
+	struct intel_gt *gt = arg;
+
+	/* Confirm the table we load is still valid */
+	return intel_fw_table_check(gt->uncore->fw_domains_table,
+				    gt->uncore->fw_domains_table_entries,
+				    GRAPHICS_VER(gt->i915) >= 9);
+}
+
+int intel_uncore_live_selftests(struct drm_i915_private *i915)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(live_fw_table),
+		SUBTEST(live_forcewake_ops),
+		SUBTEST(live_forcewake_domains),
+	};
+
+	return intel_gt_live_subtests(tests, to_gt(i915));
+}
diff --git a/drivers/gpu/drm/i915/selftests/lib_sw_fence.c b/drivers/gpu/drm/i915/selftests/lib_sw_fence.c
new file mode 100644
index 0000000000..bf2752cc1e
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/lib_sw_fence.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright © 2017 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 "lib_sw_fence.h"
+
+/* Small library of different fence types useful for writing tests */
+
+static int
+nop_fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
+{
+	return NOTIFY_DONE;
+}
+
+void __onstack_fence_init(struct i915_sw_fence *fence,
+			  const char *name,
+			  struct lock_class_key *key)
+{
+	debug_fence_init_onstack(fence);
+
+	__init_waitqueue_head(&fence->wait, name, key);
+	atomic_set(&fence->pending, 1);
+	fence->error = 0;
+	fence->fn = nop_fence_notify;
+}
+
+void onstack_fence_fini(struct i915_sw_fence *fence)
+{
+	if (!fence->fn)
+		return;
+
+	i915_sw_fence_commit(fence);
+	i915_sw_fence_fini(fence);
+}
+
+static void timed_fence_wake(struct timer_list *t)
+{
+	struct timed_fence *tf = from_timer(tf, t, timer);
+
+	i915_sw_fence_commit(&tf->fence);
+}
+
+void timed_fence_init(struct timed_fence *tf, unsigned long expires)
+{
+	onstack_fence_init(&tf->fence);
+
+	timer_setup_on_stack(&tf->timer, timed_fence_wake, 0);
+
+	if (time_after(expires, jiffies))
+		mod_timer(&tf->timer, expires);
+	else
+		i915_sw_fence_commit(&tf->fence);
+}
+
+void timed_fence_fini(struct timed_fence *tf)
+{
+	if (del_timer_sync(&tf->timer))
+		i915_sw_fence_commit(&tf->fence);
+
+	destroy_timer_on_stack(&tf->timer);
+	i915_sw_fence_fini(&tf->fence);
+}
+
+struct heap_fence {
+	struct i915_sw_fence fence;
+	union {
+		struct kref ref;
+		struct rcu_head rcu;
+	};
+};
+
+static int
+heap_fence_notify(struct i915_sw_fence *fence, enum i915_sw_fence_notify state)
+{
+	struct heap_fence *h = container_of(fence, typeof(*h), fence);
+
+	switch (state) {
+	case FENCE_COMPLETE:
+		break;
+
+	case FENCE_FREE:
+		heap_fence_put(&h->fence);
+	}
+
+	return NOTIFY_DONE;
+}
+
+struct i915_sw_fence *heap_fence_create(gfp_t gfp)
+{
+	struct heap_fence *h;
+
+	h = kmalloc(sizeof(*h), gfp);
+	if (!h)
+		return NULL;
+
+	i915_sw_fence_init(&h->fence, heap_fence_notify);
+	refcount_set(&h->ref.refcount, 2);
+
+	return &h->fence;
+}
+
+static void heap_fence_release(struct kref *ref)
+{
+	struct heap_fence *h = container_of(ref, typeof(*h), ref);
+
+	i915_sw_fence_fini(&h->fence);
+
+	kfree_rcu(h, rcu);
+}
+
+void heap_fence_put(struct i915_sw_fence *fence)
+{
+	struct heap_fence *h = container_of(fence, typeof(*h), fence);
+
+	kref_put(&h->ref, heap_fence_release);
+}
diff --git a/drivers/gpu/drm/i915/selftests/lib_sw_fence.h b/drivers/gpu/drm/i915/selftests/lib_sw_fence.h
new file mode 100644
index 0000000000..e54d6bc23d
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/lib_sw_fence.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * lib_sw_fence.h - library routines for testing N:M synchronisation points
+ *
+ * Copyright (C) 2017 Intel Corporation
+ */
+
+#ifndef _LIB_SW_FENCE_H_
+#define _LIB_SW_FENCE_H_
+
+#include <linux/timer.h>
+
+#include "../i915_sw_fence.h"
+
+#ifdef CONFIG_LOCKDEP
+#define onstack_fence_init(fence)				\
+do {								\
+	static struct lock_class_key __key;			\
+								\
+	__onstack_fence_init((fence), #fence, &__key);	\
+} while (0)
+#else
+#define onstack_fence_init(fence)				\
+	__onstack_fence_init((fence), NULL, NULL)
+#endif
+
+void __onstack_fence_init(struct i915_sw_fence *fence,
+			  const char *name,
+			  struct lock_class_key *key);
+void onstack_fence_fini(struct i915_sw_fence *fence);
+
+struct timed_fence {
+	struct i915_sw_fence fence;
+	struct timer_list timer;
+};
+
+void timed_fence_init(struct timed_fence *tf, unsigned long expires);
+void timed_fence_fini(struct timed_fence *tf);
+
+struct i915_sw_fence *heap_fence_create(gfp_t gfp);
+void heap_fence_put(struct i915_sw_fence *fence);
+
+#endif /* _LIB_SW_FENCE_H_ */
diff --git a/drivers/gpu/drm/i915/selftests/librapl.c b/drivers/gpu/drm/i915/selftests/librapl.c
new file mode 100644
index 0000000000..eb03b5b28b
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/librapl.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#include <asm/msr.h>
+
+#include "i915_drv.h"
+#include "librapl.h"
+
+bool librapl_supported(const struct drm_i915_private *i915)
+{
+	/* Discrete cards require hwmon integration */
+	if (IS_DGFX(i915))
+		return false;
+
+	return librapl_energy_uJ();
+}
+
+u64 librapl_energy_uJ(void)
+{
+	unsigned long long power;
+	u32 units;
+
+	if (rdmsrl_safe(MSR_RAPL_POWER_UNIT, &power))
+		return 0;
+
+	units = (power & 0x1f00) >> 8;
+
+	if (rdmsrl_safe(MSR_PP1_ENERGY_STATUS, &power))
+		return 0;
+
+	return (1000000 * power) >> units; /* convert to uJ */
+}
diff --git a/drivers/gpu/drm/i915/selftests/librapl.h b/drivers/gpu/drm/i915/selftests/librapl.h
new file mode 100644
index 0000000000..e3b24fad0a
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/librapl.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2020 Intel Corporation
+ */
+
+#ifndef SELFTEST_LIBRAPL_H
+#define SELFTEST_LIBRAPL_H
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+
+bool librapl_supported(const struct drm_i915_private *i915);
+
+u64 librapl_energy_uJ(void);
+
+#endif /* SELFTEST_LIBRAPL_H */
diff --git a/drivers/gpu/drm/i915/selftests/mock_drm.h b/drivers/gpu/drm/i915/selftests/mock_drm.h
new file mode 100644
index 0000000000..9916b6f955
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_drm.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright © 2017 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.
+ *
+ */
+
+#ifndef __MOCK_DRM_H
+#define __MOCK_DRM_H
+
+#include <drm/drm_file.h>
+
+#include "i915_drv.h"
+
+struct drm_file;
+struct file;
+
+static inline struct file *mock_file(struct drm_i915_private *i915)
+{
+	return mock_drm_getfile(i915->drm.primary, O_RDWR);
+}
+
+static inline struct drm_file *to_drm_file(struct file *f)
+{
+	return f->private_data;
+}
+
+#endif /* !__MOCK_DRM_H */
diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.c b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
new file mode 100644
index 0000000000..da0b269606
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
@@ -0,0 +1,270 @@
+/*
+ * 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 <linux/pm_domain.h>
+#include <linux/pm_runtime.h>
+#include <linux/iommu.h>
+
+#include <drm/drm_managed.h>
+
+#include "gt/intel_gt.h"
+#include "gt/intel_gt_requests.h"
+#include "gt/mock_engine.h"
+#include "intel_memory_region.h"
+#include "intel_region_ttm.h"
+
+#include "mock_request.h"
+#include "mock_gem_device.h"
+#include "mock_gtt.h"
+#include "mock_uncore.h"
+#include "mock_region.h"
+
+#include "gem/selftests/mock_context.h"
+#include "gem/selftests/mock_gem_object.h"
+
+void mock_device_flush(struct drm_i915_private *i915)
+{
+	struct intel_gt *gt = to_gt(i915);
+	struct intel_engine_cs *engine;
+	enum intel_engine_id id;
+
+	do {
+		for_each_engine(engine, gt, id)
+			mock_engine_flush(engine);
+	} while (intel_gt_retire_requests_timeout(gt, MAX_SCHEDULE_TIMEOUT,
+						  NULL));
+}
+
+static void mock_device_release(struct drm_device *dev)
+{
+	struct drm_i915_private *i915 = to_i915(dev);
+
+	if (!i915->do_release)
+		goto out;
+
+	mock_device_flush(i915);
+	intel_gt_driver_remove(to_gt(i915));
+
+	i915_gem_drain_workqueue(i915);
+
+	mock_fini_ggtt(to_gt(i915)->ggtt);
+	destroy_workqueue(i915->unordered_wq);
+	destroy_workqueue(i915->wq);
+
+	intel_region_ttm_device_fini(i915);
+	intel_gt_driver_late_release_all(i915);
+	intel_memory_regions_driver_release(i915);
+
+	drm_mode_config_cleanup(&i915->drm);
+
+out:
+	i915_params_free(&i915->params);
+}
+
+static const struct drm_driver mock_driver = {
+	.name = "mock",
+	.driver_features = DRIVER_GEM,
+	.release = mock_device_release,
+};
+
+static void release_dev(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+
+	kfree(pdev);
+}
+
+static int pm_domain_resume(struct device *dev)
+{
+	return pm_generic_runtime_resume(dev);
+}
+
+static int pm_domain_suspend(struct device *dev)
+{
+	return pm_generic_runtime_suspend(dev);
+}
+
+static struct dev_pm_domain pm_domain = {
+	.ops = {
+		.runtime_suspend = pm_domain_suspend,
+		.runtime_resume = pm_domain_resume,
+	},
+};
+
+static void mock_gt_probe(struct drm_i915_private *i915)
+{
+	i915->gt[0] = to_gt(i915);
+	i915->gt[0]->name = "Mock GT";
+}
+
+static const struct intel_device_info mock_info = {
+	.__runtime.graphics.ip.ver = -1,
+	.__runtime.page_sizes = (I915_GTT_PAGE_SIZE_4K |
+				 I915_GTT_PAGE_SIZE_64K |
+				 I915_GTT_PAGE_SIZE_2M),
+	.memory_regions = REGION_SMEM,
+	.platform_engine_mask = BIT(0),
+
+	/* simply use legacy cache level for mock device */
+	.max_pat_index = 3,
+	.cachelevel_to_pat = {
+		[I915_CACHE_NONE]   = 0,
+		[I915_CACHE_LLC]    = 1,
+		[I915_CACHE_L3_LLC] = 2,
+		[I915_CACHE_WT]     = 3,
+	},
+};
+
+struct drm_i915_private *mock_gem_device(void)
+{
+#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
+	static struct dev_iommu fake_iommu = { .priv = (void *)-1 };
+#endif
+	struct drm_i915_private *i915;
+	struct pci_dev *pdev;
+	int ret;
+
+	pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
+	if (!pdev)
+		return NULL;
+	device_initialize(&pdev->dev);
+	pdev->class = PCI_BASE_CLASS_DISPLAY << 16;
+	pdev->dev.release = release_dev;
+	dev_set_name(&pdev->dev, "mock");
+	dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+
+#if IS_ENABLED(CONFIG_IOMMU_API) && defined(CONFIG_INTEL_IOMMU)
+	/* HACK to disable iommu for the fake device; force identity mapping */
+	pdev->dev.iommu = &fake_iommu;
+#endif
+	if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
+		put_device(&pdev->dev);
+		return NULL;
+	}
+
+	i915 = devm_drm_dev_alloc(&pdev->dev, &mock_driver,
+				  struct drm_i915_private, drm);
+	if (IS_ERR(i915)) {
+		pr_err("Failed to allocate mock GEM device: err=%ld\n", PTR_ERR(i915));
+		devres_release_group(&pdev->dev, NULL);
+		put_device(&pdev->dev);
+
+		return NULL;
+	}
+
+	pci_set_drvdata(pdev, i915);
+
+	/* Device parameters start as a copy of module parameters. */
+	i915_params_copy(&i915->params, &i915_modparams);
+
+	/* Set up device info and initial runtime info. */
+	intel_device_info_driver_create(i915, pdev->device, &mock_info);
+
+	dev_pm_domain_set(&pdev->dev, &pm_domain);
+	pm_runtime_enable(&pdev->dev);
+	pm_runtime_dont_use_autosuspend(&pdev->dev);
+	if (pm_runtime_enabled(&pdev->dev))
+		WARN_ON(pm_runtime_get_sync(&pdev->dev));
+
+	intel_runtime_pm_init_early(&i915->runtime_pm);
+	/* wakeref tracking has significant overhead */
+	i915->runtime_pm.no_wakeref_tracking = true;
+
+	/* Using the global GTT may ask questions about KMS users, so prepare */
+	drm_mode_config_init(&i915->drm);
+
+	intel_memory_regions_hw_probe(i915);
+
+	spin_lock_init(&i915->gpu_error.lock);
+
+	i915_gem_init__mm(i915);
+	intel_root_gt_init_early(i915);
+	mock_uncore_init(&i915->uncore, i915);
+	atomic_inc(&to_gt(i915)->wakeref.count); /* disable; no hw support */
+	to_gt(i915)->awake = -ENODEV;
+	mock_gt_probe(i915);
+
+	ret = intel_region_ttm_device_init(i915);
+	if (ret)
+		goto err_ttm;
+
+	i915->wq = alloc_ordered_workqueue("mock", 0);
+	if (!i915->wq)
+		goto err_drv;
+
+	i915->unordered_wq = alloc_workqueue("mock-unordered", 0, 0);
+	if (!i915->unordered_wq)
+		goto err_wq;
+
+	mock_init_contexts(i915);
+
+	/* allocate the ggtt */
+	ret = intel_gt_assign_ggtt(to_gt(i915));
+	if (ret)
+		goto err_unlock;
+
+	mock_init_ggtt(to_gt(i915));
+	to_gt(i915)->vm = i915_vm_get(&to_gt(i915)->ggtt->vm);
+
+	to_gt(i915)->info.engine_mask = BIT(0);
+
+	to_gt(i915)->engine[RCS0] = mock_engine(i915, "mock", RCS0);
+	if (!to_gt(i915)->engine[RCS0])
+		goto err_unlock;
+
+	if (mock_engine_init(to_gt(i915)->engine[RCS0]))
+		goto err_context;
+
+	__clear_bit(I915_WEDGED, &to_gt(i915)->reset.flags);
+	intel_engines_driver_register(i915);
+
+	i915->do_release = true;
+	ida_init(&i915->selftest.mock_region_instances);
+
+	return i915;
+
+err_context:
+	intel_gt_driver_remove(to_gt(i915));
+err_unlock:
+	destroy_workqueue(i915->unordered_wq);
+err_wq:
+	destroy_workqueue(i915->wq);
+err_drv:
+	intel_region_ttm_device_fini(i915);
+err_ttm:
+	intel_gt_driver_late_release_all(i915);
+	intel_memory_regions_driver_release(i915);
+	drm_mode_config_cleanup(&i915->drm);
+	mock_destroy_device(i915);
+
+	return NULL;
+}
+
+void mock_destroy_device(struct drm_i915_private *i915)
+{
+	struct device *dev = i915->drm.dev;
+
+	devres_release_group(dev, NULL);
+	put_device(dev);
+}
diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.h b/drivers/gpu/drm/i915/selftests/mock_gem_device.h
new file mode 100644
index 0000000000..953cfe4fab
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __MOCK_GEM_DEVICE_H__
+#define __MOCK_GEM_DEVICE_H__
+
+struct drm_i915_private;
+
+struct drm_i915_private *mock_gem_device(void);
+void mock_device_flush(struct drm_i915_private *i915);
+
+void mock_destroy_device(struct drm_i915_private *i915);
+
+#endif /* !__MOCK_GEM_DEVICE_H__ */
diff --git a/drivers/gpu/drm/i915/selftests/mock_gtt.c b/drivers/gpu/drm/i915/selftests/mock_gtt.c
new file mode 100644
index 0000000000..a516c0aa88
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_gtt.c
@@ -0,0 +1,136 @@
+/*
+ * 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 "mock_gtt.h"
+
+static void mock_insert_page(struct i915_address_space *vm,
+			     dma_addr_t addr,
+			     u64 offset,
+			     unsigned int pat_index,
+			     u32 flags)
+{
+}
+
+static void mock_insert_entries(struct i915_address_space *vm,
+				struct i915_vma_resource *vma_res,
+				unsigned int pat_index, u32 flags)
+{
+}
+
+static void mock_bind_ppgtt(struct i915_address_space *vm,
+			    struct i915_vm_pt_stash *stash,
+			    struct i915_vma_resource *vma_res,
+			    unsigned int pat_index,
+			    u32 flags)
+{
+	GEM_BUG_ON(flags & I915_VMA_GLOBAL_BIND);
+	vma_res->bound_flags |= flags;
+}
+
+static void mock_unbind_ppgtt(struct i915_address_space *vm,
+			      struct i915_vma_resource *vma_res)
+{
+}
+
+static void mock_cleanup(struct i915_address_space *vm)
+{
+}
+
+static void mock_clear_range(struct i915_address_space *vm,
+			     u64 start, u64 length)
+{
+}
+
+struct i915_ppgtt *mock_ppgtt(struct drm_i915_private *i915, const char *name)
+{
+	struct i915_ppgtt *ppgtt;
+
+	ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL);
+	if (!ppgtt)
+		return NULL;
+
+	ppgtt->vm.gt = to_gt(i915);
+	ppgtt->vm.i915 = i915;
+	ppgtt->vm.total = round_down(U64_MAX, PAGE_SIZE);
+	ppgtt->vm.dma = i915->drm.dev;
+
+	i915_address_space_init(&ppgtt->vm, VM_CLASS_PPGTT);
+
+	ppgtt->vm.alloc_pt_dma = alloc_pt_dma;
+	ppgtt->vm.alloc_scratch_dma = alloc_pt_dma;
+
+	ppgtt->vm.clear_range = mock_clear_range;
+	ppgtt->vm.insert_page = mock_insert_page;
+	ppgtt->vm.insert_entries = mock_insert_entries;
+	ppgtt->vm.cleanup = mock_cleanup;
+
+	ppgtt->vm.vma_ops.bind_vma    = mock_bind_ppgtt;
+	ppgtt->vm.vma_ops.unbind_vma  = mock_unbind_ppgtt;
+
+	return ppgtt;
+}
+
+static void mock_bind_ggtt(struct i915_address_space *vm,
+			   struct i915_vm_pt_stash *stash,
+			   struct i915_vma_resource *vma_res,
+			   unsigned int pat_index,
+			   u32 flags)
+{
+}
+
+static void mock_unbind_ggtt(struct i915_address_space *vm,
+			     struct i915_vma_resource *vma_res)
+{
+}
+
+void mock_init_ggtt(struct intel_gt *gt)
+{
+	struct i915_ggtt *ggtt = gt->ggtt;
+
+	ggtt->vm.gt = gt;
+	ggtt->vm.i915 = gt->i915;
+	ggtt->vm.is_ggtt = true;
+
+	ggtt->gmadr = DEFINE_RES_MEM(0, 2048 * PAGE_SIZE);
+	ggtt->mappable_end = resource_size(&ggtt->gmadr);
+	ggtt->vm.total = 4096 * PAGE_SIZE;
+
+	ggtt->vm.alloc_pt_dma = alloc_pt_dma;
+	ggtt->vm.alloc_scratch_dma = alloc_pt_dma;
+
+	ggtt->vm.clear_range = mock_clear_range;
+	ggtt->vm.insert_page = mock_insert_page;
+	ggtt->vm.insert_entries = mock_insert_entries;
+	ggtt->vm.cleanup = mock_cleanup;
+
+	ggtt->vm.vma_ops.bind_vma    = mock_bind_ggtt;
+	ggtt->vm.vma_ops.unbind_vma  = mock_unbind_ggtt;
+
+	i915_address_space_init(&ggtt->vm, VM_CLASS_GGTT);
+}
+
+void mock_fini_ggtt(struct i915_ggtt *ggtt)
+{
+	i915_address_space_fini(&ggtt->vm);
+}
diff --git a/drivers/gpu/drm/i915/selftests/mock_gtt.h b/drivers/gpu/drm/i915/selftests/mock_gtt.h
new file mode 100644
index 0000000000..d6eb90bd7f
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_gtt.h
@@ -0,0 +1,37 @@
+/*
+ * 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.
+ *
+ */
+
+#ifndef __MOCK_GTT_H
+#define __MOCK_GTT_H
+
+struct drm_i915_private;
+struct i915_ggtt;
+struct intel_gt;
+
+void mock_init_ggtt(struct intel_gt *gt);
+void mock_fini_ggtt(struct i915_ggtt *ggtt);
+
+struct i915_ppgtt *mock_ppgtt(struct drm_i915_private *i915, const char *name);
+
+#endif /* !__MOCK_GTT_H */
diff --git a/drivers/gpu/drm/i915/selftests/mock_region.c b/drivers/gpu/drm/i915/selftests/mock_region.c
new file mode 100644
index 0000000000..6324eb32d4
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_region.c
@@ -0,0 +1,124 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2019-2021 Intel Corporation
+ */
+
+#include <drm/ttm/ttm_placement.h>
+#include <linux/scatterlist.h>
+
+#include "gem/i915_gem_region.h"
+#include "intel_memory_region.h"
+#include "intel_region_ttm.h"
+
+#include "mock_region.h"
+
+static void mock_region_put_pages(struct drm_i915_gem_object *obj,
+				  struct sg_table *pages)
+{
+	i915_refct_sgt_put(obj->mm.rsgt);
+	obj->mm.rsgt = NULL;
+	intel_region_ttm_resource_free(obj->mm.region, obj->mm.res);
+}
+
+static int mock_region_get_pages(struct drm_i915_gem_object *obj)
+{
+	struct sg_table *pages;
+	int err;
+
+	obj->mm.res = intel_region_ttm_resource_alloc(obj->mm.region,
+						      obj->bo_offset,
+						      obj->base.size,
+						      obj->flags);
+	if (IS_ERR(obj->mm.res))
+		return PTR_ERR(obj->mm.res);
+
+	obj->mm.rsgt = intel_region_ttm_resource_to_rsgt(obj->mm.region,
+							 obj->mm.res,
+							 obj->mm.region->min_page_size);
+	if (IS_ERR(obj->mm.rsgt)) {
+		err = PTR_ERR(obj->mm.rsgt);
+		goto err_free_resource;
+	}
+
+	pages = &obj->mm.rsgt->table;
+	__i915_gem_object_set_pages(obj, pages);
+
+	return 0;
+
+err_free_resource:
+	intel_region_ttm_resource_free(obj->mm.region, obj->mm.res);
+	return err;
+}
+
+static const struct drm_i915_gem_object_ops mock_region_obj_ops = {
+	.name = "mock-region",
+	.get_pages = mock_region_get_pages,
+	.put_pages = mock_region_put_pages,
+	.release = i915_gem_object_release_memory_region,
+};
+
+static int mock_object_init(struct intel_memory_region *mem,
+			    struct drm_i915_gem_object *obj,
+			    resource_size_t offset,
+			    resource_size_t size,
+			    resource_size_t page_size,
+			    unsigned int flags)
+{
+	static struct lock_class_key lock_class;
+	struct drm_i915_private *i915 = mem->i915;
+
+	if (size > resource_size(&mem->region))
+		return -E2BIG;
+
+	drm_gem_private_object_init(&i915->drm, &obj->base, size);
+	i915_gem_object_init(obj, &mock_region_obj_ops, &lock_class, flags);
+
+	obj->bo_offset = offset;
+
+	obj->read_domains = I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT;
+
+	i915_gem_object_set_cache_coherency(obj, I915_CACHE_NONE);
+
+	i915_gem_object_init_memory_region(obj, mem);
+
+	return 0;
+}
+
+static int mock_region_fini(struct intel_memory_region *mem)
+{
+	struct drm_i915_private *i915 = mem->i915;
+	int instance = mem->instance;
+	int ret;
+
+	ret = intel_region_ttm_fini(mem);
+	ida_free(&i915->selftest.mock_region_instances, instance);
+
+	return ret;
+}
+
+static const struct intel_memory_region_ops mock_region_ops = {
+	.init = intel_region_ttm_init,
+	.release = mock_region_fini,
+	.init_object = mock_object_init,
+};
+
+struct intel_memory_region *
+mock_region_create(struct drm_i915_private *i915,
+		   resource_size_t start,
+		   resource_size_t size,
+		   resource_size_t min_page_size,
+		   resource_size_t io_start,
+		   resource_size_t io_size)
+{
+	int instance = ida_alloc_max(&i915->selftest.mock_region_instances,
+				     TTM_NUM_MEM_TYPES - TTM_PL_PRIV - 1,
+				     GFP_KERNEL);
+
+	if (instance < 0)
+		return ERR_PTR(instance);
+
+	return intel_memory_region_create(i915, start, size, min_page_size,
+					  io_start, io_size,
+					  INTEL_MEMORY_MOCK, instance,
+					  &mock_region_ops);
+}
diff --git a/drivers/gpu/drm/i915/selftests/mock_region.h b/drivers/gpu/drm/i915/selftests/mock_region.h
new file mode 100644
index 0000000000..e36c3a4335
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_region.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __MOCK_REGION_H
+#define __MOCK_REGION_H
+
+#include <linux/types.h>
+
+struct drm_i915_private;
+struct intel_memory_region;
+
+struct intel_memory_region *
+mock_region_create(struct drm_i915_private *i915,
+		   resource_size_t start,
+		   resource_size_t size,
+		   resource_size_t min_page_size,
+		   resource_size_t io_start,
+		   resource_size_t io_size);
+
+#endif /* !__MOCK_REGION_H */
diff --git a/drivers/gpu/drm/i915/selftests/mock_request.c b/drivers/gpu/drm/i915/selftests/mock_request.c
new file mode 100644
index 0000000000..09f747228d
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_request.c
@@ -0,0 +1,59 @@
+/*
+ * 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 "gem/selftests/igt_gem_utils.h"
+#include "gt/mock_engine.h"
+
+#include "mock_request.h"
+
+struct i915_request *
+mock_request(struct intel_context *ce, unsigned long delay)
+{
+	struct i915_request *request;
+
+	/* NB the i915->requests slab cache is enlarged to fit mock_request */
+	request = intel_context_create_request(ce);
+	if (IS_ERR(request))
+		return NULL;
+
+	request->mock.delay = delay;
+	return request;
+}
+
+bool mock_cancel_request(struct i915_request *request)
+{
+	struct mock_engine *engine =
+		container_of(request->engine, typeof(*engine), base);
+	bool was_queued;
+
+	spin_lock_irq(&engine->hw_lock);
+	was_queued = !list_empty(&request->mock.link);
+	list_del_init(&request->mock.link);
+	spin_unlock_irq(&engine->hw_lock);
+
+	if (was_queued)
+		i915_request_unsubmit(request);
+
+	return was_queued;
+}
diff --git a/drivers/gpu/drm/i915/selftests/mock_request.h b/drivers/gpu/drm/i915/selftests/mock_request.h
new file mode 100644
index 0000000000..8907b60c29
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_request.h
@@ -0,0 +1,37 @@
+/*
+ * 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.
+ *
+ */
+
+#ifndef __MOCK_REQUEST__
+#define __MOCK_REQUEST__
+
+#include <linux/list.h>
+
+#include "../i915_request.h"
+
+struct i915_request *
+mock_request(struct intel_context *ce, unsigned long delay);
+
+bool mock_cancel_request(struct i915_request *request);
+
+#endif /* !__MOCK_REQUEST__ */
diff --git a/drivers/gpu/drm/i915/selftests/mock_uncore.c b/drivers/gpu/drm/i915/selftests/mock_uncore.c
new file mode 100644
index 0000000000..f2d6be5e12
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_uncore.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright © 2017 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 "mock_uncore.h"
+
+#define __nop_write(x) \
+static void \
+nop_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { }
+__nop_write(8)
+__nop_write(16)
+__nop_write(32)
+
+#define __nop_read(x) \
+static u##x \
+nop_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { return 0; }
+__nop_read(8)
+__nop_read(16)
+__nop_read(32)
+__nop_read(64)
+
+void mock_uncore_init(struct intel_uncore *uncore,
+		      struct drm_i915_private *i915)
+{
+	intel_uncore_init_early(uncore, to_gt(i915));
+
+	ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, nop);
+	ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, nop);
+}
diff --git a/drivers/gpu/drm/i915/selftests/mock_uncore.h b/drivers/gpu/drm/i915/selftests/mock_uncore.h
new file mode 100644
index 0000000000..7acf1ef4d4
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/mock_uncore.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright © 2017 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.
+ *
+ */
+
+#ifndef __MOCK_UNCORE_H
+#define __MOCK_UNCORE_H
+
+struct drm_i915_private;
+struct intel_uncore;
+
+void mock_uncore_init(struct intel_uncore *uncore,
+		      struct drm_i915_private *i915);
+
+#endif /* !__MOCK_UNCORE_H */
diff --git a/drivers/gpu/drm/i915/selftests/scatterlist.c b/drivers/gpu/drm/i915/selftests/scatterlist.c
new file mode 100644
index 0000000000..805c4bfb85
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/scatterlist.c
@@ -0,0 +1,384 @@
+/*
+ * 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 <linux/prime_numbers.h>
+#include <linux/random.h>
+
+#include "i915_selftest.h"
+#include "i915_utils.h"
+
+#define PFN_BIAS (1 << 10)
+
+struct pfn_table {
+	struct sg_table st;
+	unsigned long start, end;
+};
+
+typedef unsigned int (*npages_fn_t)(unsigned long n,
+				    unsigned long count,
+				    struct rnd_state *rnd);
+
+static noinline int expect_pfn_sg(struct pfn_table *pt,
+				  npages_fn_t npages_fn,
+				  struct rnd_state *rnd,
+				  const char *who,
+				  unsigned long timeout)
+{
+	struct scatterlist *sg;
+	unsigned long pfn, n;
+
+	pfn = pt->start;
+	for_each_sg(pt->st.sgl, sg, pt->st.nents, n) {
+		struct page *page = sg_page(sg);
+		unsigned int npages = npages_fn(n, pt->st.nents, rnd);
+
+		if (page_to_pfn(page) != pfn) {
+			pr_err("%s: %s left pages out of order, expected pfn %lu, found pfn %lu (using for_each_sg)\n",
+			       __func__, who, pfn, page_to_pfn(page));
+			return -EINVAL;
+		}
+
+		if (sg->length != npages * PAGE_SIZE) {
+			pr_err("%s: %s copied wrong sg length, expected size %lu, found %u (using for_each_sg)\n",
+			       __func__, who, npages * PAGE_SIZE, sg->length);
+			return -EINVAL;
+		}
+
+		if (igt_timeout(timeout, "%s timed out\n", who))
+			return -EINTR;
+
+		pfn += npages;
+	}
+	if (pfn != pt->end) {
+		pr_err("%s: %s finished on wrong pfn, expected %lu, found %lu\n",
+		       __func__, who, pt->end, pfn);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static noinline int expect_pfn_sg_page_iter(struct pfn_table *pt,
+					    const char *who,
+					    unsigned long timeout)
+{
+	struct sg_page_iter sgiter;
+	unsigned long pfn;
+
+	pfn = pt->start;
+	for_each_sg_page(pt->st.sgl, &sgiter, pt->st.nents, 0) {
+		struct page *page = sg_page_iter_page(&sgiter);
+
+		if (page != pfn_to_page(pfn)) {
+			pr_err("%s: %s left pages out of order, expected pfn %lu, found pfn %lu (using for_each_sg_page)\n",
+			       __func__, who, pfn, page_to_pfn(page));
+			return -EINVAL;
+		}
+
+		if (igt_timeout(timeout, "%s timed out\n", who))
+			return -EINTR;
+
+		pfn++;
+	}
+	if (pfn != pt->end) {
+		pr_err("%s: %s finished on wrong pfn, expected %lu, found %lu\n",
+		       __func__, who, pt->end, pfn);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static noinline int expect_pfn_sgtiter(struct pfn_table *pt,
+				       const char *who,
+				       unsigned long timeout)
+{
+	struct sgt_iter sgt;
+	struct page *page;
+	unsigned long pfn;
+
+	pfn = pt->start;
+	for_each_sgt_page(page, sgt, &pt->st) {
+		if (page != pfn_to_page(pfn)) {
+			pr_err("%s: %s left pages out of order, expected pfn %lu, found pfn %lu (using for_each_sgt_page)\n",
+			       __func__, who, pfn, page_to_pfn(page));
+			return -EINVAL;
+		}
+
+		if (igt_timeout(timeout, "%s timed out\n", who))
+			return -EINTR;
+
+		pfn++;
+	}
+	if (pfn != pt->end) {
+		pr_err("%s: %s finished on wrong pfn, expected %lu, found %lu\n",
+		       __func__, who, pt->end, pfn);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int expect_pfn_sgtable(struct pfn_table *pt,
+			      npages_fn_t npages_fn,
+			      struct rnd_state *rnd,
+			      const char *who,
+			      unsigned long timeout)
+{
+	int err;
+
+	err = expect_pfn_sg(pt, npages_fn, rnd, who, timeout);
+	if (err)
+		return err;
+
+	err = expect_pfn_sg_page_iter(pt, who, timeout);
+	if (err)
+		return err;
+
+	err = expect_pfn_sgtiter(pt, who, timeout);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+static unsigned int one(unsigned long n,
+			unsigned long count,
+			struct rnd_state *rnd)
+{
+	return 1;
+}
+
+static unsigned int grow(unsigned long n,
+			 unsigned long count,
+			 struct rnd_state *rnd)
+{
+	return n + 1;
+}
+
+static unsigned int shrink(unsigned long n,
+			   unsigned long count,
+			   struct rnd_state *rnd)
+{
+	return count - n;
+}
+
+static unsigned int random(unsigned long n,
+			   unsigned long count,
+			   struct rnd_state *rnd)
+{
+	return 1 + (prandom_u32_state(rnd) % 1024);
+}
+
+static unsigned int random_page_size_pages(unsigned long n,
+					   unsigned long count,
+					   struct rnd_state *rnd)
+{
+	/* 4K, 64K, 2M */
+	static unsigned int page_count[] = {
+		BIT(12) >> PAGE_SHIFT,
+		BIT(16) >> PAGE_SHIFT,
+		BIT(21) >> PAGE_SHIFT,
+	};
+
+	return page_count[(prandom_u32_state(rnd) % 3)];
+}
+
+static inline bool page_contiguous(struct page *first,
+				   struct page *last,
+				   unsigned long npages)
+{
+	return first + npages == last;
+}
+
+static int alloc_table(struct pfn_table *pt,
+		       unsigned long count, unsigned long max,
+		       npages_fn_t npages_fn,
+		       struct rnd_state *rnd,
+		       int alloc_error)
+{
+	struct scatterlist *sg;
+	unsigned long n, pfn;
+
+	/* restricted by sg_alloc_table */
+	if (overflows_type(max, unsigned int))
+		return -E2BIG;
+
+	if (sg_alloc_table(&pt->st, max,
+			   GFP_KERNEL | __GFP_NORETRY | __GFP_NOWARN))
+		return alloc_error;
+
+	/* count should be less than 20 to prevent overflowing sg->length */
+	GEM_BUG_ON(overflows_type(count * PAGE_SIZE, sg->length));
+
+	/* Construct a table where each scatterlist contains different number
+	 * of entries. The idea is to check that we can iterate the individual
+	 * pages from inside the coalesced lists.
+	 */
+	pt->start = PFN_BIAS;
+	pfn = pt->start;
+	sg = pt->st.sgl;
+	for (n = 0; n < count; n++) {
+		unsigned long npages = npages_fn(n, count, rnd);
+
+		/* Nobody expects the Sparse Memmap! */
+		if (!page_contiguous(pfn_to_page(pfn),
+				     pfn_to_page(pfn + npages),
+				     npages)) {
+			sg_free_table(&pt->st);
+			return -ENOSPC;
+		}
+
+		if (n)
+			sg = sg_next(sg);
+		sg_set_page(sg, pfn_to_page(pfn), npages * PAGE_SIZE, 0);
+
+		GEM_BUG_ON(page_to_pfn(sg_page(sg)) != pfn);
+		GEM_BUG_ON(sg->length != npages * PAGE_SIZE);
+		GEM_BUG_ON(sg->offset != 0);
+
+		pfn += npages;
+	}
+	sg_mark_end(sg);
+	pt->st.nents = n;
+	pt->end = pfn;
+
+	return 0;
+}
+
+static const npages_fn_t npages_funcs[] = {
+	one,
+	grow,
+	shrink,
+	random,
+	random_page_size_pages,
+	NULL,
+};
+
+static int igt_sg_alloc(void *ignored)
+{
+	IGT_TIMEOUT(end_time);
+	const unsigned long max_order = 20; /* approximating a 4GiB object */
+	struct rnd_state prng;
+	unsigned long prime;
+	int alloc_error = -ENOMEM;
+
+	for_each_prime_number(prime, max_order) {
+		unsigned long size = BIT(prime);
+		int offset;
+
+		for (offset = -1; offset <= 1; offset++) {
+			unsigned long sz = size + offset;
+			const npages_fn_t *npages;
+			struct pfn_table pt;
+			int err;
+
+			for (npages = npages_funcs; *npages; npages++) {
+				prandom_seed_state(&prng,
+						   i915_selftest.random_seed);
+				err = alloc_table(&pt, sz, sz, *npages, &prng,
+						  alloc_error);
+				if (err == -ENOSPC)
+					break;
+				if (err)
+					return err;
+
+				prandom_seed_state(&prng,
+						   i915_selftest.random_seed);
+				err = expect_pfn_sgtable(&pt, *npages, &prng,
+							 "sg_alloc_table",
+							 end_time);
+				sg_free_table(&pt.st);
+				if (err)
+					return err;
+			}
+		}
+
+		/* Test at least one continuation before accepting oom */
+		if (size > SG_MAX_SINGLE_ALLOC)
+			alloc_error = -ENOSPC;
+	}
+
+	return 0;
+}
+
+static int igt_sg_trim(void *ignored)
+{
+	IGT_TIMEOUT(end_time);
+	const unsigned long max = PAGE_SIZE; /* not prime! */
+	struct pfn_table pt;
+	unsigned long prime;
+	int alloc_error = -ENOMEM;
+
+	for_each_prime_number(prime, max) {
+		const npages_fn_t *npages;
+		int err;
+
+		for (npages = npages_funcs; *npages; npages++) {
+			struct rnd_state prng;
+
+			prandom_seed_state(&prng, i915_selftest.random_seed);
+			err = alloc_table(&pt, prime, max, *npages, &prng,
+					  alloc_error);
+			if (err == -ENOSPC)
+				break;
+			if (err)
+				return err;
+
+			if (i915_sg_trim(&pt.st)) {
+				if (pt.st.orig_nents != prime ||
+				    pt.st.nents != prime) {
+					pr_err("i915_sg_trim failed (nents %u, orig_nents %u), expected %lu\n",
+					       pt.st.nents, pt.st.orig_nents, prime);
+					err = -EINVAL;
+				} else {
+					prandom_seed_state(&prng,
+							   i915_selftest.random_seed);
+					err = expect_pfn_sgtable(&pt,
+								 *npages, &prng,
+								 "i915_sg_trim",
+								 end_time);
+				}
+			}
+			sg_free_table(&pt.st);
+			if (err)
+				return err;
+		}
+
+		/* Test at least one continuation before accepting oom */
+		if (prime > SG_MAX_SINGLE_ALLOC)
+			alloc_error = -ENOSPC;
+	}
+
+	return 0;
+}
+
+int scatterlist_mock_selftests(void)
+{
+	static const struct i915_subtest tests[] = {
+		SUBTEST(igt_sg_alloc),
+		SUBTEST(igt_sg_trim),
+	};
+
+	return i915_subtests(tests, NULL);
+}