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=-3.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,SUBJ_ALL_CAPS,UNPARSEABLE_RELAY, USER_AGENT_GIT 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 CBCDFCA9EA0 for ; Mon, 28 Oct 2019 08:28:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A6FCE20B7C for ; Mon, 28 Oct 2019 08:28:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387410AbfJ1I2b (ORCPT ); Mon, 28 Oct 2019 04:28:31 -0400 Received: from mailgw01.mediatek.com ([210.61.82.183]:3495 "EHLO mailgw01.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1731531AbfJ1I2b (ORCPT ); Mon, 28 Oct 2019 04:28:31 -0400 X-UUID: 26941fac30af42238146077b5939d355-20191028 X-UUID: 26941fac30af42238146077b5939d355-20191028 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.10 Build 0809 with TLS) with ESMTP id 1314836737; Mon, 28 Oct 2019 16:28:24 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs06n1.mediatek.inc (172.21.101.129) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Mon, 28 Oct 2019 16:28:23 +0800 Received: from localhost.localdomain (10.15.20.246) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Mon, 28 Oct 2019 16:28:20 +0800 From: Chao Hao To: Joerg Roedel , Rob Herring , Matthias Brugger CC: , , , , , , Jun Yan , Cui Zhang , Guangming Cao , Yong Wu , Anan Sun , Miles Chen , Chao Hao Subject: [PATCH 00/13] MT6779 IOMMU SUPPORT Date: Mon, 28 Oct 2019 16:28:07 +0800 Message-ID: <20191028082820.20221-1-chao.hao@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patchset adds mt6779 iommu support and adjusts mtk iommu software architecture mainly. 1. Add mt6779 basic function, such as smi larb port define, registers define and so on. 2. In addition, this patchset will adjust current mtk iommu SW architecture mainly to adapt all the mtk platforms: Firstly, mt6779 iommu can support more HW modules, but some modules have special requirements for iova region, for example, CCU only can access 0x4000_0000~0x47ff_ffff, VPU only can access 0x7da0_0000~0x7fbf_ffff. Current architecture only support one iommu domain(include 0~4GB), all the modules allocate iova from 0~4GB region, so it doesn't ensure to allocate expected iova region for special module(CCU and VPU). In order to resolve the problem, we will create different iommu domains for special module, and every domain can include iova region which module needs. Secondly, all the iommus share one page table for current architecture by "mtk_iommu_get_m4u_data", to make the architecture look clearly, we will create a global page table firstly(mtk_iommu_pgtable), and the all the iommus can use it. One page table can include 4GB iova space, so multiple iommu domains are created based on the same page table. New SW architecture diagram is as below: iommu0 iommu1 | | ---------- | mtk_iommu_pgtable | ------------------------------------------ | | | mtk_iommu_domain1 mtk_iommu_domain2 mtk_iommu_domain3 | | | iommu_group1 iommu_group2 iommu_group3 | | | iommu_domain1 iommu_domain2 iommu_domain3 | | | iova region1(normal) iova region2(CCU) iova region3(VPU) This patchset depends on "Improve tlb range flush"[1] and based on v5.4-rc1. [1]http://lists.infradead.org/pipermail/linux-mediatek/2019-October/024207.html Chao Hao (13): dt-bindings: mediatek: Add bindings for MT6779 iommu/mediatek: Add mt6779 IOMMU basic support iommu/mediatek: Add mtk_iommu_pgtable structure iommu/mediatek: Remove mtk_iommu_domain_finalise iommu/mediatek: Remove pgtable info in mtk_iommu_domain iommu/mediatek: Change get the way of m4u_group iommu/mediatek: Add smi_larb info about device iommu/mediatek: Add mtk_domain_data structure iommu/mediatek: Remove the usage of m4u_dom variable iommu/mediatek: Remove mtk_iommu_get_m4u_data api iommu/mediatek: Add iova reserved function iommu/mediatek: Change single domain to multiple domains iommu/mediatek: Add multiple mtk_iommu_domain support for mt6779 .../bindings/iommu/mediatek,iommu.txt | 2 + drivers/iommu/mtk_iommu.c | 488 +++++++++++++++--- drivers/iommu/mtk_iommu.h | 50 +- include/dt-bindings/memory/mt6779-larb-port.h | 217 ++++++++ 4 files changed, 685 insertions(+), 72 deletions(-) -- 2.18.0