From patchwork Tue Aug 17 22:40:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "David E. Box" X-Patchwork-Id: 12442229 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D104FC4338F for ; Tue, 17 Aug 2021 22:42:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B74D660FE6 for ; Tue, 17 Aug 2021 22:42:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235125AbhHQWnV (ORCPT ); Tue, 17 Aug 2021 18:43:21 -0400 Received: from mga14.intel.com ([192.55.52.115]:15594 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234828AbhHQWnV (ORCPT ); Tue, 17 Aug 2021 18:43:21 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10079"; a="215940909" X-IronPort-AV: E=Sophos;i="5.84,330,1620716400"; d="scan'208";a="215940909" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Aug 2021 15:42:46 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,330,1620716400"; d="scan'208";a="573066689" Received: from linux.intel.com ([10.54.29.200]) by orsmga004.jf.intel.com with ESMTP; 17 Aug 2021 15:42:46 -0700 Received: from debox1-desk2.jf.intel.com (debox1-desk2.jf.intel.com [10.54.75.16]) by linux.intel.com (Postfix) with ESMTP id 6E6BF580975; Tue, 17 Aug 2021 15:42:46 -0700 (PDT) From: "David E. Box" To: lee.jones@linaro.org, hdegoede@redhat.com, mgross@linux.intel.com, bhelgaas@google.com, srinivas.pandruvada@intel.com, andy.shevchenko@gmail.com Cc: "David E. Box" , linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-pci@vger.kernel.org Subject: [PATCH v2 1/5] PCI: Add #defines for accessing PCIE DVSEC fields Date: Tue, 17 Aug 2021 15:40:14 -0700 Message-Id: <20210817224018.1013192-2-david.e.box@linux.intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210817224018.1013192-1-david.e.box@linux.intel.com> References: <20210817224018.1013192-1-david.e.box@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org Add #defines for accessing Vendor ID, Revision, Length, and ID offsets in the Designated Vendor Specific Extended Capability (DVSEC). Defined in PCIe r5.0, sec 7.9.6. Signed-off-by: David E. Box Acked-by: Bjorn Helgaas --- V2: Unchanged include/uapi/linux/pci_regs.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h index e709ae8235e7..57ee51f19283 100644 --- a/include/uapi/linux/pci_regs.h +++ b/include/uapi/linux/pci_regs.h @@ -1080,7 +1080,11 @@ /* Designated Vendor-Specific (DVSEC, PCI_EXT_CAP_ID_DVSEC) */ #define PCI_DVSEC_HEADER1 0x4 /* Designated Vendor-Specific Header1 */ +#define PCI_DVSEC_HEADER1_VID(x) ((x) & 0xffff) +#define PCI_DVSEC_HEADER1_REV(x) (((x) >> 16) & 0xf) +#define PCI_DVSEC_HEADER1_LEN(x) (((x) >> 20) & 0xfff) #define PCI_DVSEC_HEADER2 0x8 /* Designated Vendor-Specific Header2 */ +#define PCI_DVSEC_HEADER2_ID(x) ((x) & 0xffff) /* Data Link Feature */ #define PCI_DLF_CAP 0x04 /* Capabilities Register */