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 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=unavailable 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 4075AC433EF for ; Thu, 23 Sep 2021 17:33:42 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C9970610C9 for ; Thu, 23 Sep 2021 17:33:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org C9970610C9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4HFj1w3h2cz3cHs for ; Fri, 24 Sep 2021 03:33:40 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=intel.com (client-ip=192.55.52.120; helo=mga04.intel.com; envelope-from=ben.widawsky@intel.com; receiver=) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4HFhxs4ftCz2yPM for ; Fri, 24 Sep 2021 03:30:09 +1000 (AEST) X-IronPort-AV: E=McAfee;i="6200,9189,10116"; a="222014579" X-IronPort-AV: E=Sophos;i="5.85,316,1624345200"; d="scan'208";a="222014579" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Sep 2021 10:26:57 -0700 X-IronPort-AV: E=Sophos;i="5.85,316,1624345200"; d="scan'208";a="704832575" Received: from unknown (HELO bad-guy.kumite) ([10.252.132.140]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Sep 2021 10:26:56 -0700 From: Ben Widawsky To: linux-cxl@vger.kernel.org Subject: [PATCH v2 8/9] ocxl: Use pci core's DVSEC functionality Date: Thu, 23 Sep 2021 10:26:46 -0700 Message-Id: <20210923172647.72738-9-ben.widawsky@intel.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210923172647.72738-1-ben.widawsky@intel.com> References: <20210923172647.72738-1-ben.widawsky@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ben Widawsky , Andrew Donnellan , David Woodhouse , iommu@lists.linux-foundation.org, Bjorn Helgaas , "David E. Box" , linux-pci@vger.kernel.org, Frederic Barrat , Lu Baolu , linuxppc-dev@lists.ozlabs.org, Kan Liang Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Reduce maintenance burden of DVSEC query implementation by using the centralized PCI core implementation. There are two obvious places to simply drop in the new core implementation. There remains find_dvsec_from_pos() which would benefit from using a core implementation. As that change is less trivial it is reserved for later. Cc: linuxppc-dev@lists.ozlabs.org Cc: Andrew Donnellan Acked-by: Frederic Barrat (v1) Signed-off-by: Ben Widawsky --- arch/powerpc/platforms/powernv/ocxl.c | 3 ++- drivers/misc/ocxl/config.c | 13 +------------ 2 files changed, 3 insertions(+), 13 deletions(-) diff --git a/arch/powerpc/platforms/powernv/ocxl.c b/arch/powerpc/platforms/powernv/ocxl.c index 9105efcf242a..28b009b46464 100644 --- a/arch/powerpc/platforms/powernv/ocxl.c +++ b/arch/powerpc/platforms/powernv/ocxl.c @@ -107,7 +107,8 @@ static int get_max_afu_index(struct pci_dev *dev, int *afu_idx) int pos; u32 val; - pos = find_dvsec_from_pos(dev, OCXL_DVSEC_FUNC_ID, 0); + pos = pci_find_dvsec_capability(dev, PCI_VENDOR_ID_IBM, + OCXL_DVSEC_FUNC_ID); if (!pos) return -ESRCH; diff --git a/drivers/misc/ocxl/config.c b/drivers/misc/ocxl/config.c index a68738f38252..e401a51596b9 100644 --- a/drivers/misc/ocxl/config.c +++ b/drivers/misc/ocxl/config.c @@ -33,18 +33,7 @@ static int find_dvsec(struct pci_dev *dev, int dvsec_id) { - int vsec = 0; - u16 vendor, id; - - while ((vsec = pci_find_next_ext_capability(dev, vsec, - OCXL_EXT_CAP_ID_DVSEC))) { - pci_read_config_word(dev, vsec + OCXL_DVSEC_VENDOR_OFFSET, - &vendor); - pci_read_config_word(dev, vsec + OCXL_DVSEC_ID_OFFSET, &id); - if (vendor == PCI_VENDOR_ID_IBM && id == dvsec_id) - return vsec; - } - return 0; + return pci_find_dvsec_capability(dev, PCI_VENDOR_ID_IBM, dvsec_id); } static int find_dvsec_afu_ctrl(struct pci_dev *dev, u8 afu_idx) -- 2.33.0