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 4ACF5EED63F for ; Thu, 12 Sep 2024 18:42:25 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1AD0E10EC12; Thu, 12 Sep 2024 18:42:25 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="UKU51Exg"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5842510E02A for ; Thu, 12 Sep 2024 18:42:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1726166540; x=1757702540; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=1FyhjEujvcHbnTpXOjI5J/XRQNsLRqw6RVYF/BcYzR4=; b=UKU51ExgO7pkAm0wW/43F8jRgzeOR8pFzf+ZAdeDYtIN+MHk6bFkt5Ho IpxrN7azb6ulJIeuODqBAD5FpXvx9fIxitoMqc6f7Eoo/4RunTqRKOAnw v46Jw/oDA+qJFPbyKDfwwSBUdknxZcN4zEn/ZXLv5FjD2iz46s5pYJhkR jSWDCJEPt9JUiqaRQ2fd15y7IlGZarzKBC0AGVpufpC0RNy7iK0O5E6SR lM0JXI+ZOdCVsYLzBx3l4ljisp6ZtLCnbqVvOcJtBpZDHIg/kaMriBc0d eJlVwo0M24auy1AVkKG92VdHUJZfD1TZcmpjCY1vTW9v96dYNJMFKY2/6 g==; X-CSE-ConnectionGUID: d2IMI1YNQ4a5axUShKX+gA== X-CSE-MsgGUID: e46ryXmSRlG438H07LxkDQ== X-IronPort-AV: E=McAfee;i="6700,10204,11193"; a="36183408" X-IronPort-AV: E=Sophos;i="6.10,223,1719903600"; d="scan'208";a="36183408" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Sep 2024 11:42:19 -0700 X-CSE-ConnectionGUID: NeHZ+fcsRf6kOW1gQsQKSA== X-CSE-MsgGUID: 8PJjBEB5QO6LWnMZ5L5GVA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,223,1719903600"; d="scan'208";a="72399411" Received: from awvttdev-05.aw.intel.com ([10.228.212.156]) by fmviesa004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Sep 2024 11:42:18 -0700 From: "Michael J. Ruhl" To: intel-xe@lists.freedesktop.org, lucas.demarchi@intel.com, michael.j.ruhl@intel.com Subject: [PATCH v13 2/4] platform/x86/intel/vsec: Add PMT read callbacks Date: Thu, 12 Sep 2024 14:42:07 -0400 Message-ID: <20240912184210.914612-3-michael.j.ruhl@intel.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240912184210.914612-1-michael.j.ruhl@intel.com> References: <20240912184210.914612-1-michael.j.ruhl@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" From: "David E. Box" Some PMT providers require device specific actions before their telemetry can be read. Provide assignable PMT read callbacks to allow providers to perform those actions. Reviewed-by: Ilpo Järvinen Reviewed-by: Michael J. Ruhl Signed-off-by: David E. Box --- drivers/platform/x86/intel/vsec.c | 1 + include/linux/intel_vsec.h | 15 +++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/drivers/platform/x86/intel/vsec.c b/drivers/platform/x86/intel/vsec.c index 2b46807f868b..7b5cc9993974 100644 --- a/drivers/platform/x86/intel/vsec.c +++ b/drivers/platform/x86/intel/vsec.c @@ -212,6 +212,7 @@ static int intel_vsec_add_dev(struct pci_dev *pdev, struct intel_vsec_header *he intel_vsec_dev->num_resources = header->num_entries; intel_vsec_dev->quirks = info->quirks; intel_vsec_dev->base_addr = info->base_addr; + intel_vsec_dev->priv_data = info->priv_data; if (header->id == VSEC_ID_SDSI) intel_vsec_dev->ida = &intel_vsec_sdsi_ida; diff --git a/include/linux/intel_vsec.h b/include/linux/intel_vsec.h index 6495e37c9079..11ee185566c3 100644 --- a/include/linux/intel_vsec.h +++ b/include/linux/intel_vsec.h @@ -67,10 +67,24 @@ enum intel_vsec_quirks { VSEC_QUIRK_EARLY_HW = BIT(4), }; +/** + * struct pmt_callbacks - Callback infrastructure for PMT devices + * ->read_telem() when specified, called by client driver to access PMT data (instead + * of direct copy). + * @pdev: PCI device reference for the callback's use + * @guid: ID of data to acccss + * @data: buffer for the data to be copied + * @count: size of buffer + */ +struct pmt_callbacks { + int (*read_telem)(struct pci_dev *pdev, u32 guid, u64 *data, u32 count); +}; + /** * struct intel_vsec_platform_info - Platform specific data * @parent: parent device in the auxbus chain * @headers: list of headers to define the PMT client devices to create + * @priv_data: private data, usable by parent devices, currently a callback * @caps: bitmask of PMT capabilities for the given headers * @quirks: bitmask of VSEC device quirks * @base_addr: allow a base address to be specified (rather than derived) @@ -78,6 +92,7 @@ enum intel_vsec_quirks { struct intel_vsec_platform_info { struct device *parent; struct intel_vsec_header **headers; + void *priv_data; unsigned long caps; unsigned long quirks; u64 base_addr; -- 2.44.0