From patchwork Thu Aug 26 18:55:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiner Kallweit X-Patchwork-Id: 1521303 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=LQ+TmbWt; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4GwXDt5DWfz9sW4 for ; Fri, 27 Aug 2021 04:58:38 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243493AbhHZS7Y (ORCPT ); Thu, 26 Aug 2021 14:59:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243375AbhHZS7U (ORCPT ); Thu, 26 Aug 2021 14:59:20 -0400 Received: from mail-wm1-x32c.google.com (mail-wm1-x32c.google.com [IPv6:2a00:1450:4864:20::32c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DDF26C061757 for ; Thu, 26 Aug 2021 11:58:31 -0700 (PDT) Received: by mail-wm1-x32c.google.com with SMTP id m25-20020a7bcb99000000b002e751bcb5dbso2810632wmi.5 for ; Thu, 26 Aug 2021 11:58:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:from:to:cc:references:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=vd7UE3cNG2/03UusJReOeDxQVP6H5yBoJiW9RmSgRZ0=; b=LQ+TmbWtes8/SZiNxTsXNJxacRL1mRzXBoUMDG3/86TbzEbYYZFenyMFGaS3KW12Rd BrETvALFTdZrtoKImaxvtgl9w90lFPAHSZhvhD2JtmcOwaP4gdD5VUB0Zqxdb6xPs6RC RdEAdw7qE4zhjq8hnxv3nlUhDUyclw6YTMWF4jxCTWGaBpVyJYQU8M46bUD05lK00zUC cSetpN2MMx6ATJh0A/bTWUz4+8kZXNJs997wiRDj76t1paibylq1/fffFRH9yyn68kjO oR3JZ+gF+vFwN653Db06gZu0xkzbDabDZjaKetPL23puxCtPrC+38SBjLXxO3yyFjbuh 7MzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=vd7UE3cNG2/03UusJReOeDxQVP6H5yBoJiW9RmSgRZ0=; b=toYsAffYBiOD8pS1Iyg5nCV3gckdDB4ELvxfKiJdBqYhQvUcH+ZecmfqT7sf4o+dhH vYZOT974q2UkJYAR4kjx4MRxgfKeFTskn/0DYjeBSRe+/vV69089bfJ7YDpZC3qP5HSB jkAs1vTlOMoZhW3iOYG44qxZxsM+8dc6vGPUkhg2gtCF7mwYy1w5oOufF78aZrovk6z3 yIs/h0cy2K5eqKjcFLwPOn1HLo/UdS50F94wXaEknQHu1fCdLZBDwxdBkK1vHnTBN4Gy 9A8F0di+GiN5rMSGeRnzyrmKbi5khHDn5l4RYKbWM8abAWomS3275V9xRv1Pyc/dDqq/ WWeg== X-Gm-Message-State: AOAM531+eFlsTpxpys7nmSRk65f/McGv4YgQ1bGg39Y73qXF/bH6LabG yBNkfnTok2YEoctmcVJrM6r/joknEbNcGg== X-Google-Smtp-Source: ABdhPJzOwBnhdaa6jSK+0tBE8mRQyjwIpjy0hx0LEZBjOz3DPS/FxGyLpTS/61b7FLZjB2m9rxzoqg== X-Received: by 2002:a05:600c:4309:: with SMTP id p9mr5146111wme.174.1630004310271; Thu, 26 Aug 2021 11:58:30 -0700 (PDT) Received: from ?IPv6:2003:ea:8f08:4500:b5d8:a3dc:f88f:cae2? (p200300ea8f084500b5d8a3dcf88fcae2.dip0.t-ipconnect.de. [2003:ea:8f08:4500:b5d8:a3dc:f88f:cae2]) by smtp.googlemail.com with ESMTPSA id b15sm4506359wru.1.2021.08.26.11.58.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 26 Aug 2021 11:58:29 -0700 (PDT) Subject: [PATCH 4/7] PCI/VPD: Add pci_vpd_find_id_string() From: Heiner Kallweit To: Bjorn Helgaas Cc: "linux-pci@vger.kernel.org" References: <5fa6578d-1515-20d3-be5f-9e7dc7db4424@gmail.com> Message-ID: Date: Thu, 26 Aug 2021 20:55:43 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.13.0 MIME-Version: 1.0 In-Reply-To: <5fa6578d-1515-20d3-be5f-9e7dc7db4424@gmail.com> Content-Language: en-US Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Similar to pci_vpd_find_ro_info_keyword() provide an API function to retrieve the ID string from VPD. This way callers don't have to deal with low-level function pci_vpd_lrdt_size() any longer that can be made private to the VPD core in a subsequent patch. Signed-off-by: Heiner Kallweit --- drivers/pci/vpd.c | 6 ++++++ include/linux/pci.h | 10 ++++++++++ 2 files changed, 16 insertions(+) diff --git a/drivers/pci/vpd.c b/drivers/pci/vpd.c index b7bf014cc..79712b3d1 100644 --- a/drivers/pci/vpd.c +++ b/drivers/pci/vpd.c @@ -320,6 +320,12 @@ static int pci_vpd_find_tag(const u8 *buf, unsigned int len, u8 rdt, unsigned in return -ENOENT; } +int pci_vpd_find_id_string(const u8 *buf, unsigned int len, unsigned int *size) +{ + return pci_vpd_find_tag(buf, len, PCI_VPD_LRDT_ID_STRING, size); +} +EXPORT_SYMBOL_GPL(pci_vpd_find_id_string); + static int pci_vpd_find_info_keyword(const u8 *buf, unsigned int off, unsigned int len, const char *kw) { diff --git a/include/linux/pci.h b/include/linux/pci.h index 0d6c45b1b..f83930562 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -2350,6 +2350,16 @@ static inline u8 pci_vpd_info_field_size(const u8 *info_field) */ void *pci_vpd_alloc(struct pci_dev *dev, unsigned int *size); +/** + * pci_vpd_find_id_string - Locate id string in VPD + * @buf: Pointer to buffered VPD data + * @len: The length of the buffer area in which to search + * @size: Pointer to field where length of id string is returned + * + * Returns the index of the id string or -ENOENT if not found. + */ +int pci_vpd_find_id_string(const u8 *buf, unsigned int len, unsigned int *size); + /** * pci_vpd_find_ro_info_keyword - Locate info field keyword in VPD RO section * @buf: Pointer to buffered VPD data