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=-7.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 26D20C433E0 for ; Sat, 1 Aug 2020 23:51:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 04A5520691 for ; Sat, 1 Aug 2020 23:51:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596325861; bh=/RTX0rVm2iLBMlRdDM24nNOFTPRHcYFdhTxisdSjWDM=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=qY2RGjyvIRH0ZhSS5NkEuNzeBTNnn7Rq+fgd7DgWlnRWho+wHNbRtn+VHjNBjHHHM Jh+EmROt4HAb2kcNVhF/mrhfnlxgf0PP3Y5y8PPVvGgSlDJUvOMXgtoNMFw2oWnI/G W6PLUQxYeLs2eLzz+ptjMIwST5TQsWOm06xsGFnE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727928AbgHAXu4 (ORCPT ); Sat, 1 Aug 2020 19:50:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:57608 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725883AbgHAXuz (ORCPT ); Sat, 1 Aug 2020 19:50:55 -0400 Received: from mail-ed1-f52.google.com (mail-ed1-f52.google.com [209.85.208.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D47C420789; Sat, 1 Aug 2020 23:50:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596325855; bh=/RTX0rVm2iLBMlRdDM24nNOFTPRHcYFdhTxisdSjWDM=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=GKa0b1n++JBbGlBkW2Q8zcKWc/8G5g2kRJ1hJfSjcl0x25nRnPleix94G6SZQBMQf CQBVbFMYm+Bwo6LXpkuUFdKiPhsXf5MRx+q682XvJ9JLGD6PVliYxMZVYv37rXZsGT SRG9c33TAZhWB2sOk3/rPYxvyyMkSdpNP5xIvKPQ= Received: by mail-ed1-f52.google.com with SMTP id i26so21476911edv.4; Sat, 01 Aug 2020 16:50:54 -0700 (PDT) X-Gm-Message-State: AOAM533cETGWa34GDD1RTJGvLLnrmUYg7KS0o7sn7TrFzvqkG20r7JTU bCsruVDPh0ln68A13AoUYmCv4f2K1qJYOsCskg== X-Google-Smtp-Source: ABdhPJzQmcCCQwR67S6JChR4X8UlBaNrr/6FEYSwtL2uZyPlHYYi1Y8yC31MEt19hcsQnLvDj3qLleKurtzHXUqlyw8= X-Received: by 2002:a50:d2c7:: with SMTP id q7mr5358828edg.61.1596325853405; Sat, 01 Aug 2020 16:50:53 -0700 (PDT) MIME-Version: 1.0 References: <1596010690-13178-1-git-send-email-neal.liu@mediatek.com> <1596010690-13178-3-git-send-email-neal.liu@mediatek.com> In-Reply-To: <1596010690-13178-3-git-send-email-neal.liu@mediatek.com> From: Chun-Kuang Hu Date: Sun, 2 Aug 2020 07:50:41 +0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v4 2/2] soc: mediatek: add mtk-devapc driver To: Neal Liu Cc: Rob Herring , Matthias Brugger , devicetree@vger.kernel.org, wsd_upstream , lkml , "moderated list:ARM/Mediatek SoC support" , Linux ARM Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Neal: Neal Liu =E6=96=BC 2020=E5=B9=B47=E6=9C=8829=E6=97= =A5 =E9=80=B1=E4=B8=89 =E4=B8=8B=E5=8D=884:29=E5=AF=AB=E9=81=93=EF=BC=9A > > MediaTek bus fabric provides TrustZone security support and data > protection to prevent slaves from being accessed by unexpected > masters. > The security violation is logged and sent to the processor for > further analysis or countermeasures. > > Any occurrence of security violation would raise an interrupt, and > it will be handled by mtk-devapc driver. The violation > information is printed in order to find the murderer. > > Signed-off-by: Neal Liu > --- [snip] > + > +struct mtk_devapc_context { > + struct device *dev; > + u32 vio_idx_num; > + void __iomem *devapc_pd_base; This is devapc context, so prefix 'devapc' is redundant. And, what does 'pd' mean? Regards, Chun-Kuang. > + struct mtk_devapc_vio_info *vio_info; > + const struct mtk_devapc_pd_offset *offset; > + const struct mtk_devapc_vio_dbgs *vio_dbgs; > +}; > + 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=-7.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no 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 B8B1DC433E0 for ; Sat, 1 Aug 2020 23:51:15 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 847C020691 for ; Sat, 1 Aug 2020 23:51:15 +0000 (UTC) Authentication-Results: mail.kernel.org; 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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596325855; bh=/RTX0rVm2iLBMlRdDM24nNOFTPRHcYFdhTxisdSjWDM=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=GKa0b1n++JBbGlBkW2Q8zcKWc/8G5g2kRJ1hJfSjcl0x25nRnPleix94G6SZQBMQf CQBVbFMYm+Bwo6LXpkuUFdKiPhsXf5MRx+q682XvJ9JLGD6PVliYxMZVYv37rXZsGT SRG9c33TAZhWB2sOk3/rPYxvyyMkSdpNP5xIvKPQ= Received: by mail-ed1-f52.google.com with SMTP id c2so18945454edx.8; Sat, 01 Aug 2020 16:50:54 -0700 (PDT) X-Gm-Message-State: AOAM530GKIh0ByQ/DVo2SORuzXxkDxBNeZNBmVHuDlPNXkCSzobplEpo esmQmayAEdHUH9CdWgcPbM1uOU5JNbKdjO16XQ== X-Google-Smtp-Source: ABdhPJzQmcCCQwR67S6JChR4X8UlBaNrr/6FEYSwtL2uZyPlHYYi1Y8yC31MEt19hcsQnLvDj3qLleKurtzHXUqlyw8= X-Received: by 2002:a50:d2c7:: with SMTP id q7mr5358828edg.61.1596325853405; Sat, 01 Aug 2020 16:50:53 -0700 (PDT) MIME-Version: 1.0 References: <1596010690-13178-1-git-send-email-neal.liu@mediatek.com> <1596010690-13178-3-git-send-email-neal.liu@mediatek.com> In-Reply-To: <1596010690-13178-3-git-send-email-neal.liu@mediatek.com> From: Chun-Kuang Hu Date: Sun, 2 Aug 2020 07:50:41 +0800 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v4 2/2] soc: mediatek: add mtk-devapc driver To: Neal Liu X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200801_195057_930546_55AA3AE1 X-CRM114-Status: GOOD ( 13.12 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, wsd_upstream , lkml , Rob Herring , "moderated list:ARM/Mediatek SoC support" , Matthias Brugger , Linux ARM Content-Type: text/plain; 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charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org SGksIE5lYWw6CgpOZWFsIExpdSA8bmVhbC5saXVAbWVkaWF0ZWsuY29tPiDmlrwgMjAyMOW5tDfm nIgyOeaXpSDpgLHkuIkg5LiL5Y2INDoyOeWvq+mBk++8mgo+Cj4gTWVkaWFUZWsgYnVzIGZhYnJp YyBwcm92aWRlcyBUcnVzdFpvbmUgc2VjdXJpdHkgc3VwcG9ydCBhbmQgZGF0YQo+IHByb3RlY3Rp b24gdG8gcHJldmVudCBzbGF2ZXMgZnJvbSBiZWluZyBhY2Nlc3NlZCBieSB1bmV4cGVjdGVkCj4g bWFzdGVycy4KPiBUaGUgc2VjdXJpdHkgdmlvbGF0aW9uIGlzIGxvZ2dlZCBhbmQgc2VudCB0byB0 aGUgcHJvY2Vzc29yIGZvcgo+IGZ1cnRoZXIgYW5hbHlzaXMgb3IgY291bnRlcm1lYXN1cmVzLgo+ Cj4gQW55IG9jY3VycmVuY2Ugb2Ygc2VjdXJpdHkgdmlvbGF0aW9uIHdvdWxkIHJhaXNlIGFuIGlu dGVycnVwdCwgYW5kCj4gaXQgd2lsbCBiZSBoYW5kbGVkIGJ5IG10ay1kZXZhcGMgZHJpdmVyLiBU aGUgdmlvbGF0aW9uCj4gaW5mb3JtYXRpb24gaXMgcHJpbnRlZCBpbiBvcmRlciB0byBmaW5kIHRo ZSBtdXJkZXJlci4KPgo+IFNpZ25lZC1vZmYtYnk6IE5lYWwgTGl1IDxuZWFsLmxpdUBtZWRpYXRl ay5jb20+Cj4gLS0tCgpbc25pcF0KCj4gKwo+ICtzdHJ1Y3QgbXRrX2RldmFwY19jb250ZXh0IHsK PiArICAgICAgIHN0cnVjdCBkZXZpY2UgKmRldjsKPiArICAgICAgIHUzMiB2aW9faWR4X251bTsK PiArICAgICAgIHZvaWQgX19pb21lbSAqZGV2YXBjX3BkX2Jhc2U7CgpUaGlzIGlzIGRldmFwYyBj b250ZXh0LCBzbyBwcmVmaXggJ2RldmFwYycgaXMgcmVkdW5kYW50LgpBbmQsIHdoYXQgZG9lcyAn cGQnIG1lYW4/CgpSZWdhcmRzLApDaHVuLUt1YW5nLgoKPiArICAgICAgIHN0cnVjdCBtdGtfZGV2 YXBjX3Zpb19pbmZvICp2aW9faW5mbzsKPiArICAgICAgIGNvbnN0IHN0cnVjdCBtdGtfZGV2YXBj X3BkX29mZnNldCAqb2Zmc2V0Owo+ICsgICAgICAgY29uc3Qgc3RydWN0IG10a19kZXZhcGNfdmlv X2RiZ3MgKnZpb19kYmdzOwo+ICt9Owo+ICsKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFy bS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9t YWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK