From patchwork Mon Aug 5 23:39:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Carlos Eduardo Gallo Filho X-Patchwork-Id: 13754245 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 09F8FC3DA4A for ; Mon, 5 Aug 2024 23:38:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 832C210E2D8; Mon, 5 Aug 2024 23:38:50 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; secure) header.d=disroot.org header.i=@disroot.org header.b="gYWZUQJb"; dkim-atps=neutral Received: from layka.disroot.org (layka.disroot.org [178.21.23.139]) by gabe.freedesktop.org (Postfix) with ESMTPS id AD6E010E2D8 for ; Mon, 5 Aug 2024 23:38:48 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 9756A41A31; Tue, 6 Aug 2024 01:38:47 +0200 (CEST) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PyWzkTeCWuQD; Tue, 6 Aug 2024 01:38:46 +0200 (CEST) From: Carlos Eduardo Gallo Filho DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1722901126; bh=3d7IJSOtZj007dEKYdJ98kyAdZzqzlCA1H3qob533Z4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=gYWZUQJbW0DeSkuCC7sIZLDcOndG/EyYnG9Z4nA8/xqsQUX3PjXvZoa97dkuTUb5o u9BokoCXabc0r3GJPC68YN2gKW6iCGwi3hcSwlFsKdC0Oym7jIAsHeVFRavLgui+Ug bLTd7T2Swr1qid6IhLQ2SaWqtDn82I+2ASkp+FM4loe8eDMLs9RBMpculIVQuW/LsF 2YihZSVJJMgPkHT6aCSTJura4jMdk+PsjwDMre4tvSzzU48z3+Ll55+GbGc2lXAO9I /+MEvb0Q80wxvzz4RZtJ3GmtR0brJPYoL45S1ij6NyqPPF91CZvgSpldthTehdbB6C UYAnEqBk7mtEA== To: dri-devel@lists.freedesktop.org Cc: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , =?utf-8?q?Ma=C3=ADra_Canal?= , =?utf-8?q?Andr=C3=A9_?= =?utf-8?q?Almeida?= , Arthur Grillo , Tales Lelo da Aparecida , Carlos Eduardo Gallo Filho Subject: [PATCH v4 8/9] drm/tests: Add test for drm_framebuffer_init() Date: Mon, 5 Aug 2024 20:39:33 -0300 Message-ID: <20240805234022.18586-9-gcarlos@disroot.org> In-Reply-To: <20240805234022.18586-1-gcarlos@disroot.org> References: <20240805234022.18586-1-gcarlos@disroot.org> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add three KUnit test cases for the drm_framebuffer_init function: 1. Test if expected values are being set after drm_framebuffer_init() call. 2. Try to init a framebuffer without setting its format. 3. Try calling drm_framebuffer_init() with mismatch of the drm_device passed at the first argument and the one pointed by fb->dev. Signed-off-by: Carlos Eduardo Gallo Filho --- v2: - Reorder kunit cases alphabetically. - Let fb1.dev unset instead of set it to wrong_drm to test mismatched drm_device passed as drm_framebuffer_init() argument. - Clean the framebuffer object. v3: - Split into three tests. - Add documentation. - Stop testing lookup here. v4: - Export drm_framebuffer_free for test. - Document what is expected on drm_test_framebuffer_init test. - Use a valid drm_device on drm_test_framebuffer_init_dev_mismatch test. --- drivers/gpu/drm/drm_framebuffer.c | 1 + drivers/gpu/drm/tests/drm_framebuffer_test.c | 84 ++++++++++++++++++++ 2 files changed, 85 insertions(+) diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c index 9cd85ac789bb..47e6e8577b62 100644 --- a/drivers/gpu/drm/drm_framebuffer.c +++ b/drivers/gpu/drm/drm_framebuffer.c @@ -839,6 +839,7 @@ void drm_framebuffer_free(struct kref *kref) fb->funcs->destroy(fb); } +EXPORT_SYMBOL_FOR_TESTS_ONLY(drm_framebuffer_free); /** * drm_framebuffer_init - initialize a framebuffer diff --git a/drivers/gpu/drm/tests/drm_framebuffer_test.c b/drivers/gpu/drm/tests/drm_framebuffer_test.c index e11b5bc9a105..72314805839d 100644 --- a/drivers/gpu/drm/tests/drm_framebuffer_test.c +++ b/drivers/gpu/drm/tests/drm_framebuffer_test.c @@ -5,6 +5,7 @@ * Copyright (c) 2022 Maíra Canal */ +#include #include #include @@ -568,10 +569,93 @@ static void drm_test_framebuffer_lookup_inexistent(struct kunit *test) KUNIT_EXPECT_NULL(test, fb); } +/* + * Test if drm_framebuffer_init initializes the framebuffer successfully, + * asserting that its modeset object struct and its refcount are correctly + * set and that strictly one framebuffer is initialized. + */ +static void drm_test_framebuffer_init(struct kunit *test) +{ + struct drm_framebuffer_test_priv *priv = test->priv; + struct drm_device *dev = &priv->dev; + struct drm_format_info format = { }; + struct drm_framebuffer fb1 = { .dev = dev, .format = &format }; + struct drm_framebuffer_funcs funcs = { }; + int ret; + + ret = drm_framebuffer_init(dev, &fb1, &funcs); + KUNIT_ASSERT_EQ(test, ret, 0); + + /* Check if fb->funcs is actually set to the drm_framebuffer_funcs passed on */ + KUNIT_EXPECT_PTR_EQ(test, fb1.funcs, &funcs); + + /* The fb->comm must be set to the current running process */ + KUNIT_EXPECT_STREQ(test, fb1.comm, current->comm); + + /* The fb->base must be successfully initialized */ + KUNIT_EXPECT_NE(test, fb1.base.id, 0); + KUNIT_EXPECT_EQ(test, fb1.base.type, DRM_MODE_OBJECT_FB); + KUNIT_EXPECT_EQ(test, kref_read(&fb1.base.refcount), 1); + KUNIT_EXPECT_PTR_EQ(test, fb1.base.free_cb, &drm_framebuffer_free); + + /* There must be just that one fb initialized */ + KUNIT_EXPECT_EQ(test, dev->mode_config.num_fb, 1); + KUNIT_EXPECT_PTR_EQ(test, dev->mode_config.fb_list.prev, &fb1.head); + KUNIT_EXPECT_PTR_EQ(test, dev->mode_config.fb_list.next, &fb1.head); + + drm_framebuffer_cleanup(&fb1); +} + +/* Try to init a framebuffer without setting its format */ +static void drm_test_framebuffer_init_bad_format(struct kunit *test) +{ + struct drm_framebuffer_test_priv *priv = test->priv; + struct drm_device *dev = &priv->dev; + struct drm_framebuffer fb1 = { .dev = dev, .format = NULL }; + struct drm_framebuffer_funcs funcs = { }; + int ret; + + /* Fails if fb.format isn't set */ + ret = drm_framebuffer_init(dev, &fb1, &funcs); + KUNIT_EXPECT_EQ(test, ret, -EINVAL); +} + +/* + * Test calling drm_framebuffer_init() passing a framebuffer linked to a + * different drm_device parent from the one passed on the first argument, which + * must fail. + */ +static void drm_test_framebuffer_init_dev_mismatch(struct kunit *test) +{ + struct drm_framebuffer_test_priv *priv = test->priv; + struct drm_device *right_dev = &priv->dev; + struct drm_device *wrong_dev; + struct device *wrong_dev_parent; + struct drm_format_info format = { }; + struct drm_framebuffer fb1 = { .dev = right_dev, .format = &format }; + struct drm_framebuffer_funcs funcs = { }; + int ret; + + wrong_dev_parent = kunit_device_register(test, "drm-kunit-wrong-device-mock"); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, wrong_dev_parent); + + wrong_dev = __drm_kunit_helper_alloc_drm_device(test, wrong_dev_parent, + sizeof(struct drm_device), + 0, 0); + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, wrong_dev); + + /* Fails if fb->dev doesn't point to the drm_device passed on first arg */ + ret = drm_framebuffer_init(wrong_dev, &fb1, &funcs); + KUNIT_EXPECT_EQ(test, ret, -EINVAL); +} + static struct kunit_case drm_framebuffer_tests[] = { KUNIT_CASE_PARAM(drm_test_framebuffer_check_src_coords, check_src_coords_gen_params), KUNIT_CASE(drm_test_framebuffer_cleanup), KUNIT_CASE_PARAM(drm_test_framebuffer_create, drm_framebuffer_create_gen_params), + KUNIT_CASE(drm_test_framebuffer_init), + KUNIT_CASE(drm_test_framebuffer_init_bad_format), + KUNIT_CASE(drm_test_framebuffer_init_dev_mismatch), KUNIT_CASE(drm_test_framebuffer_lookup), KUNIT_CASE(drm_test_framebuffer_lookup_inexistent), KUNIT_CASE(drm_test_framebuffer_modifiers_not_supported),