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 38EC7E77188 for ; Wed, 18 Dec 2024 12:01:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E48DE10EB8A; Wed, 18 Dec 2024 12:01:21 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="R/yjJm+x"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.16]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8627610EB8A for ; Wed, 18 Dec 2024 12:01:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1734523281; x=1766059281; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=mWBYE7VybTRVucjNeS/xDcr+T1u7qrunjS8XWohxkDA=; b=R/yjJm+xVLKUw7uvwVl861zCDPbtv01t77ol2Am/bju+x2T+dkVl4od5 6a9vQ9iOBJRA+tF3s05vpndqMaN3MtACFFXpO/8ZKgB8XhI+Lppegyl/b p8+wsAAp/ofxuP+i77zRVskO1Ngk7Uh6jR4MVIHBms9hmtIUaigIMFPwt r3+bPLuLC3nqplooZKW9OoaN28EwxsrwXvUhK+TwPchKrAGFdDIMnSMlz w6kUhMgGCDwr8le/Zw8RrdoO97F8DbaBbpuUY3V1TAYjUIF+x9Ya+W7Q3 0MVFNn5kDyAq954WK2n3Vt0FcTzrGbO9aVHGZYaoOODjJLoeE4fWqpG7W Q==; X-CSE-ConnectionGUID: RjyEZumJTBqnZ8rHkrI/Ng== X-CSE-MsgGUID: SWTKhVJkSLWQE4ghcP5K9w== X-IronPort-AV: E=McAfee;i="6700,10204,11290"; a="35143183" X-IronPort-AV: E=Sophos;i="6.12,244,1728975600"; d="scan'208";a="35143183" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by orvoesa108.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Dec 2024 04:01:21 -0800 X-CSE-ConnectionGUID: MdvykGN3TjGsjGSAHwkdoA== X-CSE-MsgGUID: +TS5Knx4R+WYMwMkOr5sYg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,244,1728975600"; d="scan'208";a="98076170" Received: from mbernato-mobl1.ger.corp.intel.com (HELO localhost) ([10.245.116.91]) by fmviesa008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Dec 2024 04:01:14 -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?= , Narasimha C V , =?UTF-8?q?Piotr=20Pi=C3=B3rkowski?= , Satyanarayana K V P , Tomasz Lis Subject: [PATCH i-g-t 2/5] lib/xe/xe_sriov_provisioning: Add accessors for quota/spare attributes Date: Wed, 18 Dec 2024 13:00:53 +0100 Message-Id: <20241218120056.779962-3-marcin.bernatowicz@linux.intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20241218120056.779962-1-marcin.bernatowicz@linux.intel.com> References: <20241218120056.779962-1-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 functions to get and set SR-IOV provisioning quota and spare attributes. These functions provide access to shared resource attributes such as GGTT, LMEM, contexts, and doorbells for both PF and VF contexts. Add returning and asserting variants to allow flexible error handling based on usage scenarios. Signed-off-by: Marcin Bernatowicz Cc: Adam Miszczak Cc: Jakub Kolakowski Cc: Lukasz Laguna Cc: Michał Wajdeczko Cc: Michał Winiarski Cc: Narasimha C V Cc: Piotr Piórkowski Cc: Satyanarayana K V P Cc: Tomasz Lis --- lib/xe/xe_sriov_provisioning.c | 124 +++++++++++++++++++++++++++++++++ lib/xe/xe_sriov_provisioning.h | 14 ++++ 2 files changed, 138 insertions(+) diff --git a/lib/xe/xe_sriov_provisioning.c b/lib/xe/xe_sriov_provisioning.c index 67ae9cf54..536121931 100644 --- a/lib/xe/xe_sriov_provisioning.c +++ b/lib/xe/xe_sriov_provisioning.c @@ -9,6 +9,7 @@ #include "intel_chipset.h" #include "linux_scaffold.h" #include "xe/xe_mmio.h" +#include "xe/xe_sriov_debugfs.h" #include "xe/xe_sriov_provisioning.h" /** @@ -150,3 +151,126 @@ int xe_sriov_find_ggtt_provisioned_pte_offsets(int pf_fd, int gt, struct xe_mmio return 0; } + +/** + * xe_sriov_shared_res_attr_name - Retrieve the attribute name for a shared resource + * @res: Shared resource type (see enum xe_sriov_shared_res) + * @vf_num: VF number (1-based) or 0 for PF + * + * Returns the attribute name corresponding to the specified + * shared resource type and VF number. For VF (vf_num > 0), the "quota" + * attribute name is returned (e.g., "contexts_quota"). For PF (vf_num == 0), + * the "spare" attribute name is returned (e.g., "contexts_spare"). + * + * Return: + * The attribute name as a string if the resource type is valid. + * NULL if the resource type is invalid. + */ +const char *xe_sriov_shared_res_attr_name(enum xe_sriov_shared_res res, + unsigned int vf_num) +{ + switch (res) { + case XE_SRIOV_SHARED_RES_CONTEXTS: + return vf_num ? "contexts_quota" : "contexts_spare"; + case XE_SRIOV_SHARED_RES_DOORBELLS: + return vf_num ? "doorbells_quota" : "doorbells_spare"; + case XE_SRIOV_SHARED_RES_GGTT: + return vf_num ? "ggtt_quota" : "ggtt_spare"; + case XE_SRIOV_SHARED_RES_LMEM: + return vf_num ? "lmem_quota" : "lmem_spare"; + } + + return NULL; +} + +/** + * __xe_sriov_pf_get_shared_res_attr - Read shared resource attribute + * @pf: PF device file descriptor + * @res: Shared resource type (see enum xe_sriov_shared_res) + * @vf_num: VF number (1-based) or 0 for PF + * @gt_num: GT number + * @value: Pointer to store the read attribute value + * + * Reads the specified shared resource attribute for the given PF device @pf, + * VF number @vf_num, and GT @gt_num. The attribute depends on @vf_num: + * - For VF (vf_num > 0), reads the "quota" attribute. + * - For PF (vf_num == 0), reads the "spare" attribute. + * + * + * Return: 0 on success, negative error code on failure. + */ +int __xe_sriov_pf_get_shared_res_attr(int pf, enum xe_sriov_shared_res res, + unsigned int vf_num, unsigned int gt_num, + uint64_t *value) +{ + return __xe_sriov_pf_debugfs_get_u64(pf, vf_num, gt_num, + xe_sriov_shared_res_attr_name(res, vf_num), + value); +} + +/** + * xe_sriov_pf_get_shared_res_attr - Read shared resource attribute + * @pf: PF device file descriptor + * @res: Shared resource type (see enum xe_sriov_shared_res) + * @vf_num: VF number (1-based) or 0 for PF + * @gt_num: GT number + * + * A throwing version of __xe_sriov_pf_get_shared_res_attr(). + * Instead of returning an error code, it returns the quota value and asserts + * in case of an error. + * + * Return: The value for the given shared resource attribute. + * Asserts in case of failure. + */ +uint64_t xe_sriov_pf_get_shared_res_attr(int pf, enum xe_sriov_shared_res res, + unsigned int vf_num, + unsigned int gt_num) +{ + uint64_t value; + + igt_fail_on(__xe_sriov_pf_get_shared_res_attr(pf, res, vf_num, gt_num, &value)); + + return value; +} + +/** + * __xe_sriov_pf_set_shared_res_attr - Set a shared resource attribute + * @pf: PF device file descriptor + * @res: Shared resource type (see enum xe_sriov_shared_res) + * @vf_num: VF number (1-based) or 0 for PF + * @gt_num: GT number + * @value: Value to set for the shared resource attribute + * + * Sets the specified shared resource attribute for the given PF device @pf, + * VF number @vf_num, and GT @gt_num. The attribute depends on @vf_num: + * - For VF (vf_num > 0), reads the "quota" attribute. + * - For PF (vf_num == 0), reads the "spare" attribute. + * + * Return: 0 on success, negative error code on failure. + */ +int __xe_sriov_pf_set_shared_res_attr(int pf, enum xe_sriov_shared_res res, + unsigned int vf_num, unsigned int gt_num, + uint64_t value) +{ + return __xe_sriov_pf_debugfs_set_u64(pf, vf_num, gt_num, + xe_sriov_shared_res_attr_name(res, vf_num), + value); +} + +/** + * xe_sriov_pf_set_shared_res_attr - Set the shared resource attribute value + * @pf: PF device file descriptor + * @res: Shared resource type (see enum xe_sriov_shared_res) + * @vf_num: VF number (1-based) or 0 for PF + * @gt_num: GT number + * @value: Value to set + * + * A throwing version of __xe_sriov_pf_set_shared_res_attr(). + * Instead of returning an error code, it asserts in case of an error. + */ +void xe_sriov_pf_set_shared_res_attr(int pf, enum xe_sriov_shared_res res, + unsigned int vf_num, unsigned int gt_num, + uint64_t value) +{ + igt_fail_on(__xe_sriov_pf_set_shared_res_attr(pf, res, vf_num, gt_num, value)); +} diff --git a/lib/xe/xe_sriov_provisioning.h b/lib/xe/xe_sriov_provisioning.h index aa2f08f52..168b50394 100644 --- a/lib/xe/xe_sriov_provisioning.h +++ b/lib/xe/xe_sriov_provisioning.h @@ -46,5 +46,19 @@ const char *xe_sriov_shared_res_to_string(enum xe_sriov_shared_res res); int xe_sriov_find_ggtt_provisioned_pte_offsets(int pf_fd, int gt, struct xe_mmio *mmio, struct xe_sriov_provisioned_range **ranges, unsigned int *nr_ranges); +const char *xe_sriov_shared_res_attr_name(enum xe_sriov_shared_res res, + unsigned int vf_num); +int __xe_sriov_pf_get_shared_res_attr(int pf, enum xe_sriov_shared_res res, + unsigned int vf_num, unsigned int gt_num, + uint64_t *value); +uint64_t xe_sriov_pf_get_shared_res_attr(int pf, enum xe_sriov_shared_res res, + unsigned int vf_num, + unsigned int gt_num); +int __xe_sriov_pf_set_shared_res_attr(int pf, enum xe_sriov_shared_res res, + unsigned int vf_num, unsigned int gt_num, + uint64_t value); +void xe_sriov_pf_set_shared_res_attr(int pf, enum xe_sriov_shared_res res, + unsigned int vf_num, unsigned int gt_num, + uint64_t value); #endif /* __XE_SRIOV_PROVISIONING_H__ */ -- 2.31.1