From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-4163049-1525230505-2-2930102704723871096 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, MAILING_LIST_MULTI -1, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='com', MailFrom='org' X-Spam-charsets: X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: linux-api-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=fm2; t= 1525230504; b=bGTOm5e1HOIfAp2Ma/eM7OLuwG3wvWdHuRJKLW06GtiP61+DLl +pd9/KrftPX41JApo76pIDkIPrAG3OGGKMZVoaCH9C/sc8Q75uZv3shyRqLp/isB gQFBc28WM35z4T5vXsnzQYyUT3zDJkeSwRhz+KjiMbDr5Vi5XvSpuhuYJ1u7AHO/ 7QvhInh8O8QPAJ9tgW2fHnIVhQKvGenybL4kMYdDReYcBHDLZQu73zHXNRmQhoC4 S2vnVQEI3CCbU4iGtVQAo0t7x6NoQM7HPfZ2Oaf0NEeB2PVj4c9AdwcsnIbvath7 t4Us7wnGZQOT3txXcry9ip2siabpQ8XRj8pQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:sender:list-id; s=fm2; t=1525230504; bh= yW76xP3TSSkvGz53sYwncvstILQj35AwlkukmOfPCs0=; b=RHEowjOx6TRvzwDH h4x5cKp1DN6AZ9lrxnJmrSJWXxoFMHrpgB67fuhVQBpxRepLMaYiaN2G2NteyFSZ 68GG9qQZTc7SNvPnCUlp9LEaTRr+VMCeK/wgv4EoSk9wshXE1szHrx94pz75Bc/C jmPS3BeaydjuugEg4YOEyC0hFuyANVhdvMf64sTLGmISwEp0cLz0Td5dykW741eq h9NElNdd0TfBEPcxFdbpMVD4qn877Ve7RFgoCfUqxnquc5T5h83RAs/Mxo6r9GpE W6dyoZSw1gEv7COAiamtMaHurL9usZ9Xg4I1S70HNQvN/+gqfiJVNrUgDHutz6g1 zpt3Vg== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=intel.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-api-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=intel.com header.result=pass header_is_org_domain=yes; x-vs=clean score=0 state=0 Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=intel.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-api-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-cm=none score=0; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=intel.com header.result=pass header_is_org_domain=yes; x-vs=clean score=0 state=0 X-ME-VSCategory: clean X-CM-Envelope: MS4wfHY4sj3UvuscTyCvRd2bIJgI0nAhEBFVi8DcouBgNEvUSvxVoohcVq2APHUUbt3WWgEhf3xwfJwPR3qge6TpLgg8eyh/o8qNOSA1m49ctOB2JteWwGgK +3FPlsn5YpWbBG99QbYg2tgWmPUvWPnYohsWyzgfpMeOxYjMo22UzdhdZEOWKFKLoEFnVSJdsFliKpbBWWkbQhXMd4aK2r0Yn6xPuyNDIGeLv9TPCpsRkM+q X-CM-Analysis: v=2.3 cv=WaUilXpX c=1 sm=1 tr=0 a=UK1r566ZdBxH71SXbqIOeA==:117 a=UK1r566ZdBxH71SXbqIOeA==:17 a=VUJBJC2UJ8kA:10 a=QyXUC8HyAAAA:8 a=VwQbUJbxAAAA:8 a=ORLigIeDGzOt-AVRv0kA:9 a=CRMob9CPfJQA:10 a=x8gzFH9gYPwA:10 a=AjGcO6oz07-iQ99wixmX:22 X-ME-CMScore: 0 X-ME-CMCategory: none Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751311AbeEBDB6 (ORCPT ); Tue, 1 May 2018 23:01:58 -0400 Received: from mga12.intel.com ([192.55.52.136]:63823 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751287AbeEBDBw (ORCPT ); Tue, 1 May 2018 23:01:52 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,353,1520924400"; d="scan'208";a="46058257" From: Wu Hao To: atull@kernel.org, mdf@kernel.org, linux-fpga@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-api@vger.kernel.org, luwei.kang@intel.com, yi.z.zhang@intel.com, hao.wu@intel.com Subject: [PATCH v5 05/28] fpga: region: add compat_id support Date: Wed, 2 May 2018 10:50:08 +0800 Message-Id: <1525229431-3087-6-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1525229431-3087-1-git-send-email-hao.wu@intel.com> References: <1525229431-3087-1-git-send-email-hao.wu@intel.com> Sender: linux-api-owner@vger.kernel.org X-Mailing-List: linux-api@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: This patch introduces a compat_id pointer member and sysfs interface for each fpga region, similar as compat_id for fpga manager, it allows applications to read the per region compat_id for compatibility checking before other actions on this fpga-region (e.g PR). Signed-off-by: Wu Hao --- v5: use pointer for compat_id as it's optional to implement. --- Documentation/ABI/testing/sysfs-class-fpga-region | 9 +++++++++ drivers/fpga/fpga-region.c | 22 ++++++++++++++++++++++ include/linux/fpga/fpga-region.h | 2 ++ 3 files changed, 33 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-class-fpga-region diff --git a/Documentation/ABI/testing/sysfs-class-fpga-region b/Documentation/ABI/testing/sysfs-class-fpga-region new file mode 100644 index 0000000..9618f74 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-fpga-region @@ -0,0 +1,9 @@ +What: /sys/class/fpga_region//compat_id +Date: May 2018 +KernelVersion: 4.17 +Contact: Wu Hao +Description: FPGA region id for compatibility check, e.g compatibility + of the FPGA reconfiguration hardware and image. This value + is defined or calculated by the layer that is creating the + FPGA region. This interface returns the compat_id value or + just error code -ENOENT in case compat_id is not used. diff --git a/drivers/fpga/fpga-region.c b/drivers/fpga/fpga-region.c index d6a9dd2..6929178 100644 --- a/drivers/fpga/fpga-region.c +++ b/drivers/fpga/fpga-region.c @@ -162,6 +162,27 @@ int fpga_region_program_fpga(struct fpga_region *region) } EXPORT_SYMBOL_GPL(fpga_region_program_fpga); +static ssize_t compat_id_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct fpga_region *region = to_fpga_region(dev); + + if (!region->compat_id) + return -ENOENT; + + return sprintf(buf, "%016llx%016llx\n", + (unsigned long long)region->compat_id->id_h, + (unsigned long long)region->compat_id->id_l); +} + +static DEVICE_ATTR_RO(compat_id); + +static struct attribute *fpga_region_attrs[] = { + &dev_attr_compat_id.attr, + NULL, +}; +ATTRIBUTE_GROUPS(fpga_region); + /** * fpga_region_create - alloc and init a struct fpga_region * @dev: device parent @@ -262,6 +283,7 @@ static int __init fpga_region_init(void) if (IS_ERR(fpga_region_class)) return PTR_ERR(fpga_region_class); + fpga_region_class->dev_groups = fpga_region_groups; fpga_region_class->dev_release = fpga_region_dev_release; return 0; diff --git a/include/linux/fpga/fpga-region.h b/include/linux/fpga/fpga-region.h index f2e215b..e8ad979 100644 --- a/include/linux/fpga/fpga-region.h +++ b/include/linux/fpga/fpga-region.h @@ -12,6 +12,7 @@ * @bridge_list: list of FPGA bridges specified in region * @mgr: FPGA manager * @info: FPGA image info + * @compat_id: FPGA region id for compatibility check. * @priv: private data * @get_bridges: optional function to get bridges to a list */ @@ -21,6 +22,7 @@ struct fpga_region { struct list_head bridge_list; struct fpga_manager *mgr; struct fpga_image_info *info; + struct fpga_compat_id *compat_id; void *priv; int (*get_bridges)(struct fpga_region *region); }; -- 1.8.3.1