From nobody Sun Sep 22 11:28:55 2024 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4DCCBC433FE for ; Tue, 25 Jan 2022 09:15:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1456840AbiAYJNE (ORCPT ); Tue, 25 Jan 2022 04:13:04 -0500 Received: from mailgw02.mediatek.com ([210.61.82.184]:36166 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S235782AbiAYI5Y (ORCPT ); Tue, 25 Jan 2022 03:57:24 -0500 X-UUID: 3a34ca8f93ff4b7b8c3f69c55b079165-20220125 X-UUID: 3a34ca8f93ff4b7b8c3f69c55b079165-20220125 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 433771288; Tue, 25 Jan 2022 16:57:15 +0800 Received: from mtkcas10.mediatek.inc (172.21.101.39) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Tue, 25 Jan 2022 16:57:14 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas10.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 25 Jan 2022 16:57:13 +0800 From: Yong Wu To: Joerg Roedel , Rob Herring , "Matthias Brugger" , Will Deacon CC: Robin Murphy , Krzysztof Kozlowski , Tomasz Figa , , , , , , , Hsin-Yi Wang , , , , , , "AngeloGioacchino Del Regno" , , , , Subject: [PATCH v4 03/35] iommu/mediatek: Fix 2 HW sharing pgtable issue Date: Tue, 25 Jan 2022 16:56:02 +0800 Message-ID: <20220125085634.17972-4-yong.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220125085634.17972-1-yong.wu@mediatek.com> References: <20220125085634.17972-1-yong.wu@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" In the commit 4f956c97d26b ("iommu/mediatek: Move domain_finalise into attach_device"), I overlooked the sharing pgtable case. After that commit, the "data" in the mtk_iommu_domain_finalise always is the data of the current IOMMU HW. Fix this for the sharing pgtable case. Only affect mt2712 which is the only SoC that share pgtable currently. Fixes: 4f956c97d26b ("iommu/mediatek: Move domain_finalise into attach_devi= ce") Signed-off-by: Yong Wu --- drivers/iommu/mtk_iommu.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c index eb43e7edb9dc..a92b01805232 100644 --- a/drivers/iommu/mtk_iommu.c +++ b/drivers/iommu/mtk_iommu.c @@ -446,7 +446,7 @@ static void mtk_iommu_domain_free(struct iommu_domain *= domain) static int mtk_iommu_attach_device(struct iommu_domain *domain, struct device *dev) { - struct mtk_iommu_data *data =3D dev_iommu_priv_get(dev); + struct mtk_iommu_data *data =3D dev_iommu_priv_get(dev), *frstdata; struct mtk_iommu_domain *dom =3D to_mtk_domain(domain); struct device *m4udev =3D data->dev; int ret, domid; @@ -456,7 +456,10 @@ static int mtk_iommu_attach_device(struct iommu_domain= *domain, return domid; =20 if (!dom->data) { - if (mtk_iommu_domain_finalise(dom, data, domid)) + /* Data is in the frstdata in sharing pgtable case. */ + frstdata =3D mtk_iommu_get_m4u_data(); + + if (mtk_iommu_domain_finalise(dom, frstdata, domid)) return -ENODEV; dom->data =3D data; } --=20 2.18.0