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authorChris Wilson <chris@chris-wilson.co.uk>2017-02-13 17:15:28 +0000
committerChris Wilson <chris@chris-wilson.co.uk>2017-02-13 20:45:42 +0000
commit8335fd65ce6c880876ea0f94f427aa2499bcd05a (patch)
treeada537219f451b010625dc4094e1b44b86f5971b /drivers/gpu/drm/i915/selftests/i915_gem_object.c
parentcd3862dc6e89817dbeefa02881400da926ffceeb (diff)
drm/i915: Add selftests for object allocation, phys
The phys object is a rarely used device (only very old machines require a chunk of physically contiguous pages for a few hardware interactions). As such, it is not exercised by CI and to combat that we want to add a test that exercises the phys object on all platforms. v2: Always set err on error paths and not rely on inheriting the err. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170213171558.20942-17-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_gem_object.c')
-rw-r--r--drivers/gpu/drm/i915/selftests/i915_gem_object.c120
1 files changed, 120 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_object.c b/drivers/gpu/drm/i915/selftests/i915_gem_object.c
new file mode 100644
index 000000000000..0d76c5e0e2ff
--- /dev/null
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_object.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright © 2016 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ */
+
+#include "../i915_selftest.h"
+
+#include "mock_gem_device.h"
+
+static int igt_gem_object(void *arg)
+{
+ struct drm_i915_private *i915 = arg;
+ struct drm_i915_gem_object *obj;
+ int err = -ENOMEM;
+
+ /* Basic test to ensure we can create an object */
+
+ obj = i915_gem_object_create(i915, PAGE_SIZE);
+ if (IS_ERR(obj)) {
+ err = PTR_ERR(obj);
+ pr_err("i915_gem_object_create failed, err=%d\n", err);
+ goto out;
+ }
+
+ err = 0;
+ i915_gem_object_put(obj);
+out:
+ return err;
+}
+
+static int igt_phys_object(void *arg)
+{
+ struct drm_i915_private *i915 = arg;
+ struct drm_i915_gem_object *obj;
+ int err;
+
+ /* Create an object and bind it to a contiguous set of physical pages,
+ * i.e. exercise the i915_gem_object_phys API.
+ */
+
+ obj = i915_gem_object_create(i915, PAGE_SIZE);
+ if (IS_ERR(obj)) {
+ err = PTR_ERR(obj);
+ pr_err("i915_gem_object_create failed, err=%d\n", err);
+ goto out;
+ }
+
+ mutex_lock(&i915->drm.struct_mutex);
+ err = i915_gem_object_attach_phys(obj, PAGE_SIZE);
+ mutex_unlock(&i915->drm.struct_mutex);
+ if (err) {
+ pr_err("i915_gem_object_attach_phys failed, err=%d\n", err);
+ goto out_obj;
+ }
+
+ if (obj->ops != &i915_gem_phys_ops) {
+ pr_err("i915_gem_object_attach_phys did not create a phys object\n");
+ err = -EINVAL;
+ goto out_obj;
+ }
+
+ if (!atomic_read(&obj->mm.pages_pin_count)) {
+ pr_err("i915_gem_object_attach_phys did not pin its phys pages\n");
+ err = -EINVAL;
+ goto out_obj;
+ }
+
+ /* Make the object dirty so that put_pages must do copy back the data */
+ mutex_lock(&i915->drm.struct_mutex);
+ err = i915_gem_object_set_to_gtt_domain(obj, true);
+ mutex_unlock(&i915->drm.struct_mutex);
+ if (err) {
+ pr_err("i915_gem_object_set_to_gtt_domain failed with err=%d\n",
+ err);
+ goto out_obj;
+ }
+
+out_obj:
+ i915_gem_object_put(obj);
+out:
+ return err;
+}
+
+int i915_gem_object_mock_selftests(void)
+{
+ static const struct i915_subtest tests[] = {
+ SUBTEST(igt_gem_object),
+ SUBTEST(igt_phys_object),
+ };
+ struct drm_i915_private *i915;
+ int err;
+
+ i915 = mock_gem_device();
+ if (!i915)
+ return -ENOMEM;
+
+ err = i915_subtests(tests, i915);
+
+ drm_dev_unref(&i915->drm);
+ return err;
+}