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=-10.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 78DEEC4332B for ; Tue, 9 Feb 2021 13:19:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5331B64EF4 for ; Tue, 9 Feb 2021 13:19:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229988AbhBINTf (ORCPT ); Tue, 9 Feb 2021 08:19:35 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:12886 "EHLO szxga07-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230520AbhBINTX (ORCPT ); Tue, 9 Feb 2021 08:19:23 -0500 Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4DZk2M0kmYz7bGP; Tue, 9 Feb 2021 21:17:15 +0800 (CST) Received: from [10.67.103.235] (10.67.103.235) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.498.0; Tue, 9 Feb 2021 21:18:35 +0800 Subject: Re: [RFC PATCH 0/3] PCI: Enable 10-bit tags support for PCIe devices To: , References: <1610183483-2061-1-git-send-email-liudongdong3@huawei.com> From: Dongdong Liu Message-ID: Date: Tue, 9 Feb 2021 21:18:35 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.7.1 MIME-Version: 1.0 In-Reply-To: <1610183483-2061-1-git-send-email-liudongdong3@huawei.com> Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.67.103.235] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org kindly ping :) On 2021/1/9 17:11, Dongdong Liu wrote: > 10-Bit Tag capability, introduced in PCIe-4.0 increases the total Tag > field size from 8 bits to 10 bits. > > For platforms where the RC supports 10-Bit Tag Completer capability, > it is highly recommended for platform firmware or operating software > that configures PCIe hierarchies to Set the 10-Bit Tag Requester Enable > bit automatically in Endpoints with 10-Bit Tag Requester capability. This > enables the important class of 10-Bit Tag capable adapters that send > Memory Read Requests only to host memory. > > This patchset is to enable 10-bits for PCIe EP devices. > > Dongdong Liu (3): > PCI: Add 10-Bit Tag register definitions > PCI: Enable 10-bit tags support for PCIe devices > PCI/IOV: Enable 10-bit tags support for PCIe VF devices > > drivers/pci/iov.c | 8 ++++++++ > drivers/pci/probe.c | 39 +++++++++++++++++++++++++++++++++++++++ > include/linux/pci.h | 1 + > include/uapi/linux/pci_regs.h | 5 +++++ > 4 files changed, 53 insertions(+) > > -- > 1.9.1 > > . >