From mboxrd@z Thu Jan 1 00:00:00 1970 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 06AB4C19F2E for ; Thu, 27 Feb 2025 13:15:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B5AFA10E1C6; Thu, 27 Feb 2025 13:15:03 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=bootlin.com header.i=@bootlin.com header.b="C9TGDG58"; dkim-atps=neutral Received: from relay3-d.mail.gandi.net (relay3-d.mail.gandi.net [217.70.183.195]) by gabe.freedesktop.org (Postfix) with ESMTPS id E0F8B10E1C6 for ; Thu, 27 Feb 2025 13:15:02 +0000 (UTC) Received: by mail.gandi.net (Postfix) with ESMTPSA id 8835A20578; Thu, 27 Feb 2025 13:15:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1740662101; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=ERn4R62CQG0JrkLi5HgyIF+L7TYG+KTRwFh/G325+Xo=; b=C9TGDG58Yleu2cBCU6lPZTTMCZ3CJxIJZ/0TEgu+tufC2xCP5YvGlmqOGI0zkYwcJdKg81 ibAUJjqN0QPujm7i+jxopQtO+4Sz16H/tNk5DnJm65EQaoQo4IX2Bl81fkPslidaEoY0BF 65u8lyOaG0EuUvWCPhK2gsk23gCCHBdEmfdLeJh/0YE2ZT52LNhEJLjthHTjaOrord4Nba NAFs04qGZvWFNHUVwLG8094vJ5W4aiLo1oOPkei7/IKsVZf1g8nD/NEOZaQzr1T5DnIrlw 0jgz9tINBQ3Zv5Jq8gMtz4bHkdQw4rAJj85m795++JrN0JtZasHfm9RzdFVFfw== Message-ID: Date: Thu, 27 Feb 2025 14:15:01 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Louis Chauvet Subject: Re: [PATCH i-g-t 17/39] lib/vkms: Test attaching planes to CRTCs To: =?UTF-8?B?Sm9zw6kgRXhww7NzaXRv?= , igt-dev@lists.freedesktop.org References: <20250218165011.9123-1-jose.exposito89@gmail.com> <20250218165011.9123-18-jose.exposito89@gmail.com> Content-Language: en-US Autocrypt: addr=louis.chauvet@bootlin.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeefvddrtddtgdekjeehiecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfitefpfffkpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhepkfffgggfhffuvfhfjggtgfesthekredttddvjeenucfhrhhomhepnfhouhhishcuvehhrghuvhgvthcuoehlohhuihhsrdgthhgruhhvvghtsegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpeeghffhiefgueekleetieehjeefffeiudfgtdehteekvdetjeetvdfhffetteevueenucffohhmrghinhepsghoohhtlhhinhdrtghomhenucfkphepledtrdekledrudeifedruddvjeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeeltddrkeelrdduieefrdduvdejpdhhvghloheplgduledvrdduieekrddtrddvtdgnpdhmrghilhhfrhhomheplhhouhhishdrtghhrghuvhgvthessghoohhtlhhinhdrtghomhdpnhgspghrtghpthhtohepvddprhgtphhtthhopehjohhsvgdrvgigphhoshhithhokeelsehgmhgrihhlrdgtohhmpdhrtghpthhtohepihhgthdquggvvheslhhishhtshdrfhhrvggvuggvshhkthhophdrohhrgh X-GND-Sasl: louis.chauvet@bootlin.com X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" Le 18/02/2025 à 17:49, José Expósito a écrit : > Add helpers to attach and detach planes and CRTCs and a test checking > the different valid and invalid cases. > > Signed-off-by: José Expósito > --- > lib/igt_vkms.c | 91 ++++++++++++++++++++++++++++++++++++++ > lib/igt_vkms.h | 4 ++ > tests/vkms/vkms_configfs.c | 81 +++++++++++++++++++++++++++++++++ > 3 files changed, 176 insertions(+) > > diff --git a/lib/igt_vkms.c b/lib/igt_vkms.c > index f5e193a1c..147234e5b 100644 > --- a/lib/igt_vkms.c > +++ b/lib/igt_vkms.c > @@ -119,6 +119,22 @@ static const char *get_pipeline_item_dir_name(enum vkms_pipeline_item item) > igt_assert(!"Cannot be reached: Unknown VKMS pipeline item type"); > } > > +static const char *get_attach_dir_name(enum vkms_pipeline_item item) > +{ > + switch (item) { > + case VKMS_PIPELINE_ITEM_PLANE: > + return "possible_crtcs"; > + case VKMS_PIPELINE_ITEM_ENCODER: > + return "possible_crtcs"; > + case VKMS_PIPELINE_ITEM_CONNECTOR: > + return "possible_encoders"; > + default: > + break; > + } > + > + igt_assert(!"Cannot be reached: Unknown VKMS attach directory name"); > +} > + > static void add_pipeline_item(igt_vkms_t *dev, enum vkms_pipeline_item item, > const char *name) > { > @@ -136,6 +152,51 @@ static void add_pipeline_item(igt_vkms_t *dev, enum vkms_pipeline_item item, > path, errno, strerror(errno)); > } > > +static bool attach_pipeline_item(igt_vkms_t *dev, > + enum vkms_pipeline_item src_item, > + const char *src_item_name, > + enum vkms_pipeline_item dst_item, > + const char *dst_item_name) > +{ > + char src_path[PATH_MAX]; > + char dst_path[PATH_MAX]; > + const char *src_dir_name; > + const char *attach_dir_name; > + const char *dst_dir_name; > + int ret; > + > + src_dir_name = get_pipeline_item_dir_name(src_item); > + attach_dir_name = get_attach_dir_name(src_item); > + snprintf(src_path, sizeof(src_path), "%s/%s/%s/%s/%s", dev->path, > + src_dir_name, src_item_name, attach_dir_name, dst_item_name); The more I read those functions, the more I think my proposition of having full path for pipeline item is better than having only its name. Or maybe, to avoid the duplication a macro could help: #define ITEM_FMT "%s/%s/%s" #define ITEM_ARGS(dev, src_item, src_item_name) (dev), get_pipeline_item_dir_name((src_item)), (src_item_name) I don't see major drawbacks for both of my proposition, so take what you think is better. > + > + dst_dir_name = get_pipeline_item_dir_name(dst_item); > + snprintf(dst_path, sizeof(dst_path), "%s/%s/%s", dev->path, > + dst_dir_name, dst_item_name); > + > + ret = symlink(dst_path, src_path); > + return ret == 0; Why this function has a return value? For all the other igt_vkms_device_* functions, they return void, and do assertions to stop the test if it fails. > +} > + > +static bool detach_pipeline_item(igt_vkms_t *dev, > + enum vkms_pipeline_item src_item, > + const char *src_item_name, > + const char *dst_item_name) > +{ > + char link_path[PATH_MAX]; > + const char *src_dir_name; > + const char *attach_dir_name; > + int ret; > + > + src_dir_name = get_pipeline_item_dir_name(src_item); > + attach_dir_name = get_attach_dir_name(src_item); > + snprintf(link_path, sizeof(link_path), "%s/%s/%s/%s/%s", dev->path, > + src_dir_name, src_item_name, attach_dir_name, dst_item_name); > + > + ret = unlink(link_path); > + return ret == 0; > +} > + > /** > * igt_require_vkms_configfs: > * > @@ -368,6 +429,36 @@ void igt_vkms_plane_set_type(igt_vkms_t *dev, const char *name, int type) > write_int(path, type); > } > > +/** > + * igt_vkms_plane_attach_crtc: > + * @dev: Target device > + * @plane_name: Target plane name > + * @crtc_name: Destination CRTC name > + * > + * Attach a plane to a CRTC. Return true on success and false on error. > + */ > +bool igt_vkms_plane_attach_crtc(igt_vkms_t *dev, const char *plane_name, > + const char *crtc_name) > +{ > + return attach_pipeline_item(dev, VKMS_PIPELINE_ITEM_PLANE, plane_name, > + VKMS_PIPELINE_ITEM_CRTC, crtc_name); > +} > + > +/** > + * igt_vkms_plane_detach_crtc: > + * @dev: Target device > + * @plane_name: Target plane name > + * @crtc_name: Destination CRTC name > + * > + * Detach a plane from a CRTC. Return true on success and false on error. > + */ > +bool igt_vkms_plane_detach_crtc(igt_vkms_t *dev, const char *plane_name, > + const char *crtc_name) > +{ > + return detach_pipeline_item(dev, VKMS_PIPELINE_ITEM_PLANE, plane_name, > + crtc_name); > +} > + > /** > * igt_vkms_device_add_crtc: > * @dev: Device to add the CRTC to > diff --git a/lib/igt_vkms.h b/lib/igt_vkms.h > index 50f42aa4b..fc8db268b 100644 > --- a/lib/igt_vkms.h > +++ b/lib/igt_vkms.h > @@ -32,6 +32,10 @@ void igt_vkms_device_set_enabled(igt_vkms_t *dev, bool enabled); > void igt_vkms_device_add_plane(igt_vkms_t *dev, const char *name); > int igt_vkms_plane_get_type(igt_vkms_t *dev, const char *name); > void igt_vkms_plane_set_type(igt_vkms_t *dev, const char *name, int type); > +bool igt_vkms_plane_attach_crtc(igt_vkms_t *dev, const char *plane_name, > + const char *crtc_name); > +bool igt_vkms_plane_detach_crtc(igt_vkms_t *dev, const char *plane_name, > + const char *crtc_name); > > void igt_vkms_device_add_crtc(igt_vkms_t *dev, const char *name); > bool igt_vkms_crtc_is_writeback_enabled(igt_vkms_t *dev, const char *name); > diff --git a/tests/vkms/vkms_configfs.c b/tests/vkms/vkms_configfs.c > index ea84d9f82..e1572d65f 100644 > --- a/tests/vkms/vkms_configfs.c > +++ b/tests/vkms/vkms_configfs.c > @@ -94,6 +94,20 @@ static void assert_wrong_bool_values(const char *path) > } > } > > +static bool attach(const char *src_path, const char *dst_path, > + const char *link_name) > +{ > + char link_path[PATH_MAX]; > + int ret; > + > + ret = snprintf(link_path, sizeof(link_path), "%s/%s", src_path, link_name); > + igt_assert(ret >= 0 && ret < sizeof(link_path)); > + > + ret = symlink(dst_path, link_path); > + > + return ret == 0; > +} > + > /** > * SUBTEST: device-default-files > * Description: Test that creating a VKMS device creates the default files and > @@ -476,6 +490,72 @@ static void test_connector_wrong_values(void) > igt_vkms_device_destroy(dev); > } > > +/** > + * SUBTEST: attach-plane-to-crtc > + * Description: Check that errors are handled while attaching planes to CRTCs. > + */ > + > +static void test_attach_plane_to_crtc(void) > +{ > + igt_vkms_t *dev1; > + igt_vkms_t *dev2; > + char plane1[PATH_MAX]; > + char crtc1[PATH_MAX]; > + char connector1[PATH_MAX]; > + char crtc2[PATH_MAX]; > + char dev2_enabled_path[PATH_MAX]; > + bool ok; > + > + dev1 = igt_vkms_device_create("test_attach_plane_to_crtc_1"); > + igt_assert(dev1); > + > + dev2 = igt_vkms_device_create("test_attach_plane_to_crtc_2"); > + igt_assert(dev2); > + > + igt_vkms_device_add_plane(dev1, "plane1"); > + igt_vkms_device_add_crtc(dev1, "crtc1"); > + igt_vkms_device_add_connector(dev1, "connector1"); > + igt_vkms_device_add_crtc(dev2, "crtc2"); > + > + snprintf(plane1, sizeof(plane1), "%s/planes/plane1/possible_crtcs", > + dev1->path); > + snprintf(crtc1, sizeof(crtc1), "%s/crtcs/crtc1", dev1->path); > + snprintf(connector1, sizeof(connector1), "%s/connectors/connector1", > + dev1->path); > + snprintf(crtc2, sizeof(crtc2), "%s/crtcs/crtc2", dev2->path); > + snprintf(dev2_enabled_path, sizeof(dev2_enabled_path), "%s/enabled", > + dev2->path); > + > + /* Error: Attach a plane to a connector */ > + ok = attach(plane1, connector1, "connector"); > + igt_assert_f(!ok, "Attaching plane1 to connector1 should fail\n"); > + > + /* Error: Attach a plane to a random file */ > + ok = attach(plane1, dev2_enabled_path, "file"); > + igt_assert_f(!ok, "Attaching plane1 to a random file should fail\n"); > + > + /* Error: Attach a plane to a CRTC from other device */ > + ok = attach(plane1, crtc2, "crtc2"); > + igt_assert_f(!ok, "Attaching plane1 to crtc2 should fail\n"); > + > + /* OK: Attaching plane1 to crtc1 */ > + ok = igt_vkms_plane_attach_crtc(dev1, "plane1", "crtc1"); > + igt_assert_f(ok, "Error attaching plane1 to crtc1\n"); > + > + /* Error: Attaching plane1 to crtc1 twice */ > + ok = attach(plane1, crtc1, "crtc1_duplicated"); > + igt_assert_f(!ok, "Error attaching plane1 to crtc1 twice should fail"); > + > + /* OK: Detaching and attaching again */ > + ok = igt_vkms_plane_detach_crtc(dev1, "plane1", "crtc1"); > + igt_assert_f(ok, "Error detaching plane1 from crtc1\n"); > + ok = igt_vkms_plane_attach_crtc(dev1, "plane1", "crtc1"); > + igt_assert_f(ok, "Error attaching plane1 to crtc1\n"); > + > + igt_vkms_device_destroy(dev1); > + igt_vkms_device_destroy(dev2); > +} > + > igt_main > { > struct { > @@ -495,6 +575,7 @@ igt_main > { "connector-default-files", test_connector_default_files }, > { "connector-default-values", test_connector_default_values }, > { "connector-wrong-values", test_connector_wrong_values }, > + { "attach-plane-to-crtc", test_attach_plane_to_crtc }, > }; > > igt_fixture { -- Louis Chauvet, Bootlin Embedded Linux and Kernel engineering https://bootlin.com