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=-10.4 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 77DB3C432BE for ; Thu, 29 Jul 2021 16:58:15 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 2074D608FB for ; Thu, 29 Jul 2021 16:58:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 2074D608FB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id DF1CF4062C; Thu, 29 Jul 2021 16:58:14 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mfC0h_jOIo19; Thu, 29 Jul 2021 16:58:14 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp4.osuosl.org (Postfix) with ESMTPS id B706740628; Thu, 29 Jul 2021 16:58:13 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 8D6B6C001A; Thu, 29 Jul 2021 16:58:13 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [IPv6:2605:bc80:3010::133]) by lists.linuxfoundation.org (Postfix) with ESMTP id C74F3C000E for ; Thu, 29 Jul 2021 16:58:12 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id A85164012D for ; Thu, 29 Jul 2021 16:58:12 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2TUcG68fJJlA for ; Thu, 29 Jul 2021 16:58:11 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp2.osuosl.org (Postfix) with ESMTP id 873AC40001 for ; Thu, 29 Jul 2021 16:58:11 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id A298F1FB; Thu, 29 Jul 2021 09:58:10 -0700 (PDT) Received: from [10.57.36.146] (unknown [10.57.36.146]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 9AF463F73D; Thu, 29 Jul 2021 09:58:08 -0700 (PDT) Subject: Re: [PATCH v7 3/4] iommu: rockchip: Add internal ops to handle variants To: =?UTF-8?Q?Heiko_St=c3=bcbner?= , Benjamin Gaignard , joro@8bytes.org, will@kernel.org, robh+dt@kernel.org, xxm@rock-chips.com, Ezequiel Garcia , Dafna Hirschfeld References: <20210525121551.606240-1-benjamin.gaignard@collabora.com> <20210525121551.606240-4-benjamin.gaignard@collabora.com> <3544194.oiGErgHkdL@diego> From: Robin Murphy Message-ID: <06cdd178-66af-9ff7-5100-3da4e901040f@arm.com> Date: Thu, 29 Jul 2021 17:58:03 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: <3544194.oiGErgHkdL@diego> Content-Language: en-GB Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, iommu@lists.linux-foundation.org, kernel@collabora.com, linux-arm-kernel@lists.infradead.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" T24gMjAyMS0wNy0yOSAxNzowOCwgSGVpa28gU3TDvGJuZXIgd3JvdGU6Cj4gSGkgRGFmbmEsCj4g Cj4gQW0gRG9ubmVyc3RhZywgMjkuIEp1bGkgMjAyMSwgMTc6NTk6MjYgQ0VTVCBzY2hyaWViIERh Zm5hIEhpcnNjaGZlbGQ6Cj4+IE9uIDI1LjA1LjIxIDE0OjE1LCBCZW5qYW1pbiBHYWlnbmFyZCB3 cm90ZToKPj4+IEBAIC04NzksNyArODk1LDcgQEAgc3RhdGljIGludCBya19pb21tdV9lbmFibGUo c3RydWN0IHJrX2lvbW11ICppb21tdSkKPj4+ICAgIAo+Pj4gICAgCWZvciAoaSA9IDA7IGkgPCBp b21tdS0+bnVtX21tdTsgaSsrKSB7Cj4+PiAgICAJCXJrX2lvbW11X3dyaXRlKGlvbW11LT5iYXNl c1tpXSwgUktfTU1VX0RURV9BRERSLAo+Pj4gLQkJCSAgICAgICBya19kb21haW4tPmR0X2RtYSk7 Cj4+PiArCQkJICAgICAgIHJrX29wcy0+ZG1hX2FkZHJfZHRlKHJrX2RvbWFpbi0+ZHRfZG1hKSk7 Cj4+Cj4+IEhpLAo+PiBUaGlzIGlzIG5vdCByZWxhdGVkIHRvIHRoYXQgcGF0Y2gsIEkgd2FzIHdv bmRyaW5nIHdoeSBhcmUgYWxsIG1tdSBkZXZpY2VzIGluaXRpYWxpemVkCj4+IHdpdGggdGhlIHNh bWUgZHRfZG1hPwo+PiBJIHNlZSBmb3IgZXhhbXBsZSB0aGF0IHRoZSBpc3AwX21tdSBpbiByazMz OTkuZHRzaSBoYXMgdHdvIHJlc291cmNlcy4gQ2FuJ3QgZWFjaCByZXNvdXJjZQo+PiBiZSBpbml0 aWFsaXplZCB3aXRoIGRpZmZlcmVudCBkdF9kbWEgYW5kIHRoaXMgd2F5IHRoZXJlIGFyZSB0d28g ZHQgdGFibGVzIGluc3RlYWQgb2YgdGhlIHR3byBtbXVzIHBvaW50aW5nCj4+IHRvIHRoZSBzYW1l IGR0IHRhYmxlLgo+IAo+IG1heWJlCj4gZ2l0IGxvZyAtMSBjZDY0MzhjNWY4NDQ2NjkxYWZhNDgy OWZlMWE5ZDdiNjU2MjA0ZjExCj4gCj4gImlvbW11L3JvY2tjaGlwOiBSZWNvbnN0cnVjdCB0byBz dXBwb3J0IG11bHRpIHNsYXZlcwo+ICAgICAgCj4gVGhlcmUgYXJlIHNvbWUgSVBzLCBzdWNoIGFz IHZpZGVvIGVuY29kZXIvZGVjb2RlciwgY29udGFpbnMgMiBzbGF2ZSBpb21tdXMsCj4gb25lIGZv ciByZWFkaW5nIGFuZCB0aGUgb3RoZXIgZm9yIHdyaXRpbmcuIFRoZXkgc2hhcmUgdGhlIHNhbWUg aXJxIGFuZAo+IGNsb2NrIHdpdGggbWFzdGVyLgo+ICAgICAgCj4gVGhpcyBwYXRjaCByZWNvbnN0 cnVjdHMgdG8gc3VwcG9ydCB0aGlzIGNhc2UgYnkgbWFraW5nIHRoZW0gc2hhcmUgdGhlIHNhbWUK PiBQYWdlIERpcmVjdG9yeSwgUGFnZSBUYWJsZXMgYW5kIGV2ZW4gdGhlIHJlZ2lzdGVyIG9wZXJh dGlvbnMuCj4gVGhhdCBtZWFucyBldmVyeSBpbnN0cnVjdGlvbiB0byB0aGUgcmVhZGluZyBNTVUg cmVnaXN0ZXJzIHdvdWxkIGJlCj4gZHVwbGljYXRlZCB0byB0aGUgd3JpdGluZyBNTVUgYW5kIHZp Y2UgdmVyc2EuIgoKUmlnaHQuIEluIHRoZW9yeSB3ZSAqY291bGQqIG1haW50YWluIGEgc2VwYXJh dGUgcGFnZXRhYmxlIGZvciBlYWNoIElPTU1VIAppbnN0YW5jZSwgYnV0IGl0IHdvdWxkIGp1c3Qg bGVhZCB0byBhIGxvYWQgb2YgY29tcGxleGl0eSBhbmQgb3ZlcmhlYWQuIApGb3IgYSBtYXAgcmVx dWVzdCwgd2UnZCBoYXZlIHRvIGRvIGV4dHJhIHdvcmsgdG8gZGVjaWRlIHdoaWNoIHRhYmxlKHMp IApuZWVkIG1vZGlmeWluZywgYW5kIGR1cGxpY2F0ZSBhbGwgdGhlIHdvcmsgb2YgdGhlIGFjdHVh bCBtYXBwaW5nIGlmIGl0J3MgCm1vcmUgdGhhbiBvbmUuIEZvciBhbiB1bm1hcCByZXF1ZXN0LCB3 ZSdkIGhhdmUgbm8gY2hvaWNlIGJ1dCB0byB3YWxrIAoqYWxsKiB0aGUgdGFibGVzIGJhY2tpbmcg dGhhdCBkb21haW4gdG8gZmlndXJlIG91dCB3aGljaCAoaWYgYW55KSAKYWN0dWFsbHkgaGFkIGl0 IG1hcHBlZCBpbiB0aGUgZmlyc3QgcGxhY2UuCgpHaXZlbiB0aGF0IHdlIGFscmVhZHkgaGF2ZSBk aXN0aW5jdCByZWFkIGFuZCB3cml0ZSBwZXJtaXNzaW9ucyBmb3IgCm1hcHBpbmdzIHdpdGhpbiBh IHNpbmdsZSB0YWJsZSwgdGhlcmUncyBub3QgZXZlbiBhbnkgZnVuY3Rpb25hbCBiZW5lZml0IAp0 aGF0IGNvdWxkIGJlIGdhaW5lZCBpbiB0aGlzIGNhc2UgKGFuZCBpbiB0aGUgbW9yZSBnZW5lcmFs IGNhc2Ugd2hlcmUgCnRoZSBkZXZpY2UgbWlnaHQgZW1pdCBhbGwga2luZHMgb2YgdHJhbnNhY3Rp b25zIGZyb20gYWxsIGl0cyBpbnRlcmZhY2VzIAp5b3UnZCBoYXZlIHRvIG1haW50YWluIGlkZW50 aWNhbCBtYXBwaW5ncyBmb3IgYWxsIGl0cyBJT01NVXMgYW55d2F5KS4gClNhdmluZyBtZW1vcnkg YW5kIGNvZGUgY29tcGxleGl0eSBieSBwaHlzaWNhbGx5IHNoYXJpbmcgb25lIHBhZ2V0YWJsZSAK YW5kIG5vdCB3b3JyeWluZyBhYm91dCB0cnlpbmcgdG8gZG8gc2VsZWN0aXZlIFRMQiBtYWludGVu YW5jZSBpcyBhIApiaWdnZXIgd2luIHRoYW4gYW55dGhpbmcgZWxzZSBjb3VsZCBiZS4KClJvYmlu LgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwppb21tdSBt YWlsaW5nIGxpc3QKaW9tbXVAbGlzdHMubGludXgtZm91bmRhdGlvbi5vcmcKaHR0cHM6Ly9saXN0 cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8vaW9tbXU=