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=-10.3 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=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 61B97C4320A for ; Wed, 4 Aug 2021 01:33:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 46FC860F70 for ; Wed, 4 Aug 2021 01:33:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233638AbhHDBdz (ORCPT ); Tue, 3 Aug 2021 21:33:55 -0400 Received: from szxga01-in.huawei.com ([45.249.212.187]:7777 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233477AbhHDBdy (ORCPT ); Tue, 3 Aug 2021 21:33:54 -0400 Received: from dggeml757-chm.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4GfZ5B2QZ4zYkYR; Wed, 4 Aug 2021 09:33:34 +0800 (CST) Received: from [127.0.0.1] (10.40.188.87) by dggeml757-chm.china.huawei.com (10.1.199.137) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Wed, 4 Aug 2021 09:33:39 +0800 Subject: Re: [PATCH v5 0/3] PCI: Add a quirk to enable SVA for HiSilicon chip To: Zhangfei Gao , Bjorn Helgaas , Greg Kroah-Hartman , Arnd Bergmann , jean-philippe , References: <1626144876-11352-1-git-send-email-zhangfei.gao@linaro.org> CC: , From: Zhou Wang Message-ID: <8e821546-d8ee-7b61-c0b5-e9c13cf7e7cf@hisilicon.com> Date: Wed, 4 Aug 2021 09:33:30 +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: <1626144876-11352-1-git-send-email-zhangfei.gao@linaro.org> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.40.188.87] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggeml757-chm.china.huawei.com (10.1.199.137) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2021/7/13 10:54, Zhangfei Gao wrote: > HiSilicon KunPeng920 and KunPeng930 have devices appear as PCI but are > actually on the AMBA bus. These fake PCI devices have PASID capability > though not supporting TLP. > > Add a quirk to set pasid_no_tlp and dma-can-stall for these devices. > > v5: > no change, base on 5.14-rc1 > > v4: > Applied to Linux 5.13-rc2, and build successfully with only these three patches. > > v3: > https://lore.kernel.org/linux-pci/1615258837-12189-1-git-send-email-zhangfei.gao@linaro.org/ > Rebase to Linux 5.12-rc1 > Change commit msg adding: > Property dma-can-stall depends on patchset > https://lore.kernel.org/linux-iommu/20210302092644.2553014-1-jean-philippe@linaro.org/ > > By the way the patchset can directly applied on 5.12-rc1 and build successfully though > without the dependent patchset. > > v2: > Add a new pci_dev bit: pasid_no_tlp, suggested by Bjorn > "Apparently these devices have a PASID capability. I think you should > add a new pci_dev bit that is specific to this idea of "PASID works > without TLP prefixes" and then change pci_enable_pasid() to look at > that bit as well as eetlp_prefix_path." > https://lore.kernel.org/linux-pci/20210112170230.GA1838341@bjorn-Precision-5520/ > > Zhangfei Gao (3): > PCI: PASID can be enabled without TLP prefix > PCI: Add a quirk to set pasid_no_tlp for HiSilicon chips > PCI: Set dma-can-stall for HiSilicon chips > > drivers/pci/ats.c | 2 +- > drivers/pci/quirks.c | 27 +++++++++++++++++++++++++++ > include/linux/pci.h | 1 + > 3 files changed, 29 insertions(+), 1 deletion(-) > If there is no more comment, could we take this series in this loop? Best, Zhou