--- /dev/null
+/*
+ * 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 "../i915_selftest.h"
+
+#include "mock_gem_device.h"
+#include "mock_context.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->ppgtt->base) {
+ 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->ggtt_view.type != I915_GGTT_VIEW_NORMAL) {
+ pr_err("VMA created with wrong type [%d]\n",
+ vma->ggtt_view.type);
+ ok = false;
+ }
+
+ return ok;
+}
+
+static struct i915_vma *
+checked_vma_instance(struct drm_i915_gem_object *obj,
+ struct i915_address_space *vm,
+ struct i915_ggtt_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 parmaters!\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (i915_vma_compare(vma, vma->vm,
+ i915_vma_is_ggtt(vma) ? &vma->ggtt_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 =
+ &ctx->ppgtt->base;
+ struct i915_vma *vma;
+ int err;
+
+ vma = checked_vma_instance(obj, vm, NULL);
+ 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 drm_i915_private *i915 = arg;
+ 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;
+
+ /* 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, MAX_CONTEXT_HW_ID) {
+ 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)
+ mock_context_close(ctx);
+ }
+
+end:
+ /* Final pass to lookup all created contexts */
+ err = create_vmas(i915, &objects, &contexts);
+out:
+ list_for_each_entry_safe(ctx, cn, &contexts, link)
+ mock_context_close(ctx);
+
+ list_for_each_entry_safe(obj, on, &objects, st_link)
+ i915_gem_object_put(obj);
+ return err;
+}
+
+int i915_vma_mock_selftests(void)
+{
+ static const struct i915_subtest tests[] = {
+ SUBTEST(igt_vma_create),
+ };
+ struct drm_i915_private *i915;
+ int err;
+
+ i915 = mock_gem_device();
+ if (!i915)
+ return -ENOMEM;
+
+ mutex_lock(&i915->drm.struct_mutex);
+ err = i915_subtests(tests, i915);
+ mutex_unlock(&i915->drm.struct_mutex);
+
+ drm_dev_unref(&i915->drm);
+ return err;
+}
+
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