From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-3845453-1518514878-2-13943570955288448271 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 0.001, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES enro, 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=arctest; t=1518514878; b=Is/LuFk+eGXPzFerCeCfBi8X+zV/p3BPNPTA9xzp8QmSzGC cJWq5ijBWQ2CYc/iVYAiz5pMHebWZrtoElMuvbZIDBjQligETMmS8q+Lgwyw/qT5 LgG8o7sWxkrSXd5RTwchauHyiGchQAYQe9zGpqBA64SKqCv+B/sTSqRsZ01F9M1/ cdHdwflFQeCcxqOrN3EYtbpeJuCBz8q2iRXH3sLPD7kAGXp+ge0BBfhl58Inxasa rxivGIHvxD8g9Xba9nDN9Tp21TdGmIkg378Ey3cXtgNusnjwEbDhaDHPB6u39mNZ qC+iW5XibUZWwC7AVC9r1pxVJUaMwVerA4XVCDA== 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=arctest; t=1518514878; bh=8iv+n/mx8neEpDK3627h2vwuagJL6DdtATfTXC8BlnA=; b=I5QsMpVH1Q7q idSWMQNuM34UWGLATfgNcBpYKJraYOw8DqfeRSVQVNCk6A2OsVLjtafBjJTliA4y 7LHd3vOZ2BjAMwRoX4XgJ1T9V/LBCrigqq3A0U5afL0NbIXcrN3r8O3pY4gVL5XU eYsuH10rYELfJRhUd11jZYU5RfroWwTIjgVoDZ7Hx++gMbyvp10anKHk73quP+cS ls1eopD4qkX1jydSNs0G2UNu55y1a0aGO8S96E+W/psHfH6zALdxu9Q8/q5xTru7 Oo9fX1bW8KeQf8TR/YswRTzRvDi6O5G29bwF9TtNUU2dbQ5lP9KtUmcsNkDOzMO7 l9ngH39x/Q== ARC-Authentication-Results: i=1; mx3.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-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 Authentication-Results: mx3.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-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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934645AbeBMJfs (ORCPT ); Tue, 13 Feb 2018 04:35:48 -0500 Received: from mga03.intel.com ([134.134.136.65]:27128 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934508AbeBMJfq (ORCPT ); Tue, 13 Feb 2018 04:35:46 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,507,1511856000"; d="scan'208";a="26889571" 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 v4 13/24] fpga: region: add compat_id support Date: Tue, 13 Feb 2018 17:24:42 +0800 Message-Id: <1518513893-4719-14-git-send-email-hao.wu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1518513893-4719-1-git-send-email-hao.wu@intel.com> References: <1518513893-4719-1-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 member and sysfs interface for each fpga-region, e.g userspace applications could read the compat_id from the sysfs interface for compatibility checking before PR. Signed-off-by: Wu Hao --- Documentation/ABI/testing/sysfs-class-fpga-region | 5 +++++ drivers/fpga/fpga-region.c | 19 +++++++++++++++++++ include/linux/fpga/fpga-region.h | 13 +++++++++++++ 3 files changed, 37 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..419d930 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-fpga-region @@ -0,0 +1,5 @@ +What: /sys/class/fpga_region//compat_id +Date: February 2018 +KernelVersion: 4.16 +Contact: Wu Hao +Description: FPGA region id for compatibility check. diff --git a/drivers/fpga/fpga-region.c b/drivers/fpga/fpga-region.c index 660a91b..babec96 100644 --- a/drivers/fpga/fpga-region.c +++ b/drivers/fpga/fpga-region.c @@ -162,6 +162,24 @@ 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); + + 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); + int fpga_region_register(struct fpga_region *region) { struct device *dev = region->parent; @@ -226,6 +244,7 @@ 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 423c87e..bf97dcc 100644 --- a/include/linux/fpga/fpga-region.h +++ b/include/linux/fpga/fpga-region.h @@ -6,6 +6,17 @@ #include /** + * struct fpga_region_compat_id - FPGA Region id for compatibility check + * + * @id_h: high 64bit of the compat_id + * @id_l: low 64bit of the compat_id + */ +struct fpga_region_compat_id { + u64 id_h; + u64 id_l; +}; + +/** * struct fpga_region - FPGA Region structure * @dev: FPGA Region device * @parent: parent device @@ -13,6 +24,7 @@ * @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 * @groups: optional attribute groups. @@ -24,6 +36,7 @@ struct fpga_region { struct list_head bridge_list; struct fpga_manager *mgr; struct fpga_image_info *info; + struct fpga_region_compat_id compat_id; void *priv; int (*get_bridges)(struct fpga_region *region); const struct attribute_group **groups; -- 2.7.4