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 63638C021B0 for ; Wed, 19 Feb 2025 11:53:37 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1EFCB10E7B7; Wed, 19 Feb 2025 11:53:37 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="bp7BbL3s"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id EB2DB10E299 for ; Wed, 19 Feb 2025 11:53:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1739966016; x=1771502016; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=b9GfklVzbgpN+ZVp0fVeTADLSBI4hXvG3aP12ctP81Y=; b=bp7BbL3sIcXMqPK1IrbT3UIGT9Ai2noqpciC1P0paevQK2krReR0CHOv UV74OmqpvpTmmzsX7EF8IUSFHVwBfQnxT1pHdbMaRG1Ngn/aDLI4iK9RZ x/lnBr293SHTqrD8TkyjfvCxmK+wMuPJsnWFTXUDkNEBykIkw8LnU3hVB 9GCoal/yhSuugC0ewHIO8fWBVGVL3JYroR3+AQlgu/u2qNwSDyEs0KUzy RxrYaJyUkoe7PJ5WuHGKQpQOj+8huvrKQNlYDb6oifIuvRVpyBX+9t71Q R/LrUSit6I7JUUlIFR23c1+ZWIxcpy8Il90G4+4ljIdUoycBYXPMymvnW Q==; X-CSE-ConnectionGUID: CrXZA7+SR2OUoWRpEBOiqw== X-CSE-MsgGUID: TYtJFtd9QumIrjZkaoc+fw== X-IronPort-AV: E=McAfee;i="6700,10204,11348"; a="40556116" X-IronPort-AV: E=Sophos;i="6.13,298,1732608000"; d="scan'208";a="40556116" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Feb 2025 03:53:36 -0800 X-CSE-ConnectionGUID: ETZLOo76SQiFIqRTzdXCfA== X-CSE-MsgGUID: oxBAjV+dT7+n7Wjzv3mgAQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,224,1728975600"; d="scan'208";a="137938434" Received: from mbernato-mobl1.ger.corp.intel.com (HELO localhost) ([10.245.116.136]) by fmviesa002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Feb 2025 03:53:33 -0800 From: Marcin Bernatowicz To: igt-dev@lists.freedesktop.org Cc: Marcin Bernatowicz , Adam Miszczak , Jakub Kolakowski , Lukasz Laguna , =?UTF-8?q?Micha=C5=82=20Wajdeczko?= , =?UTF-8?q?Micha=C5=82=20Winiarski?= , =?UTF-8?q?Piotr=20Pi=C3=B3rkowski?= , Satyanarayana K V P , Tomasz Lis Subject: [PATCH i-g-t 1/2] lib/igt_sriov_device: Add intel_is_vf_device helper Date: Wed, 19 Feb 2025 12:53:13 +0100 Message-Id: <20250219115314.180382-2-marcin.bernatowicz@linux.intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20250219115314.180382-1-marcin.bernatowicz@linux.intel.com> References: <20250219115314.180382-1-marcin.bernatowicz@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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" Introduce intel_is_vf_device helper to determine whether a given device is a Virtual Function (VF). The function reads the VF_CAPABILITY_REGISTER and checks if the least significant bit is set to identify VF device. Signed-off-by: Marcin Bernatowicz Cc: Adam Miszczak Cc: Jakub Kolakowski Cc: Lukasz Laguna Cc: Michał Wajdeczko Cc: Michał Winiarski Cc: Piotr Piórkowski Cc: Satyanarayana K V P Cc: Tomasz Lis --- lib/igt_sriov_device.c | 26 ++++++++++++++++++++++++++ lib/igt_sriov_device.h | 1 + 2 files changed, 27 insertions(+) diff --git a/lib/igt_sriov_device.c b/lib/igt_sriov_device.c index 2b83cd43c..ffa996d6b 100644 --- a/lib/igt_sriov_device.c +++ b/lib/igt_sriov_device.c @@ -14,6 +14,7 @@ #include "igt_device.h" #include "igt_sriov_device.h" #include "igt_sysfs.h" +#include "intel_io.h" #include "xe/xe_query.h" /** @@ -464,3 +465,28 @@ bool igt_sriov_device_reset(int pf, unsigned int vf_num) return ret; } + +/** + * intel_is_vf_device - Check if device is VF + * @device: device file descriptor + * + * Determines if a device is a Virtual Function (VF) + * by reading VF_CAPABILITY_REGISTER. If the least + * significant bit is set the device is VF. + * + * Return: + * True if device is VF, false otherwise. + */ +bool intel_is_vf_device(int fd) +{ +#define VF_CAP_REG 0x1901f8 + struct intel_mmio_data mmio_data; + uint32_t value; + + intel_register_access_init(&mmio_data, igt_device_get_pci_device(fd), false); + value = intel_register_read(&mmio_data, VF_CAP_REG); + intel_register_access_fini(&mmio_data); + igt_require((value & ~1) == 0); + + return (value & 1) != 0; +} diff --git a/lib/igt_sriov_device.h b/lib/igt_sriov_device.h index 2b6acb6d7..912449086 100644 --- a/lib/igt_sriov_device.h +++ b/lib/igt_sriov_device.h @@ -33,6 +33,7 @@ void igt_sriov_unbind_vf_drm_driver(int pf, unsigned int vf_num); int igt_sriov_device_sysfs_open(int pf, unsigned int vf_num); bool igt_sriov_device_reset_exists(int pf, unsigned int vf_num); bool igt_sriov_device_reset(int pf, unsigned int vf_num); +bool intel_is_vf_device(int device); /** * __is_valid_range - Helper to check VF range is valid -- 2.31.1