[Intel-gfx] [PATCH 21/46] drm/i915: Add selftests for object allocation, phys
Matthew Auld
matthew.william.auld at gmail.com
Thu Feb 2 13:10:57 UTC 2017
On 2 February 2017 at 09:08, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> 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.
>
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> ---
> drivers/gpu/drm/i915/i915_gem.c | 1 +
> drivers/gpu/drm/i915/selftests/i915_gem_object.c | 120 +++++++++++++++++++++
> .../gpu/drm/i915/selftests/i915_mock_selftests.h | 1 +
> 3 files changed, 122 insertions(+)
> create mode 100644 drivers/gpu/drm/i915/selftests/i915_gem_object.c
>
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index f35fda5d0abc..429c5e4350f7 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -4973,4 +4973,5 @@ i915_gem_object_get_dma_address(struct drm_i915_gem_object *obj,
> #include "selftests/scatterlist.c"
> #include "selftests/mock_gem_device.c"
> #include "selftests/huge_gem_object.c"
> +#include "selftests/i915_gem_object.c"
> #endif
> 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..db8f631e4993
> --- /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 = -ENOMEM;
> +
> + /* 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;
> + }
> +
> + err = -EINVAL;
> + 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");
> + goto out_obj;
I'm guessing that you meant to return an error value, see below also.
> + }
> +
> + if (!atomic_read(&obj->mm.pages_pin_count)) {
> + pr_err("i915_gem_object_attach_phys did not pin its phys pages\n");
> + 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;
> + }
> +
> + err = 0;
> +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;
> +}
> diff --git a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
> index bda982404ad3..2ed94e3a71b7 100644
> --- a/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
> +++ b/drivers/gpu/drm/i915/selftests/i915_mock_selftests.h
> @@ -12,3 +12,4 @@ selftest(sanitycheck, i915_mock_sanitycheck) /* keep first (igt selfcheck) */
> selftest(scatterlist, scatterlist_mock_selftests)
> selftest(breadcrumbs, intel_breadcrumbs_mock_selftests)
> selftest(requests, i915_gem_request_mock_selftests)
> +selftest(objects, i915_gem_object_mock_selftests)
> --
> 2.11.0
>
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