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Wed, 1 Sep 2021 12:01:36 +0000 From: =?utf-8?B?WW9uZyBXdSAo5ZC05YuHKQ==?= To: "hsinyi@chromium.org" CC: "linux-mediatek@lists.infradead.org" , "robh+dt@kernel.org" , "tfiga@chromium.org" , "linux-kernel@vger.kernel.org" , =?utf-8?B?WW91bGluIFBlaSAo6KO05Y+L5p6XKQ==?= , "drinkcat@chromium.org" , "devicetree@vger.kernel.org" , "evgreen@chromium.org" , =?utf-8?B?QW5hbiBTdW4gKOWtmeWuieWuiSk=?= , "robin.murphy@arm.com" , "joro@8bytes.org" , "iommu@lists.linux-foundation.org" , srv_heupstream , "tfiga@google.com" , "linux-arm-kernel@lists.infradead.org" , "matthias.bgg@gmail.com" , =?utf-8?B?Q2hhbyBIYW8gKOmDnei2hSk=?= , "krzysztof.kozlowski@canonical.com" , "will@kernel.org" Subject: Re: [PATCH v2 16/29] iommu/mediatek: Adjust device link when it is sub-common Thread-Topic: [PATCH v2 16/29] iommu/mediatek: Adjust device link when it is sub-common Thread-Index: AQHXkBCYbO6e8lmd0kinqTzjFutBSquCVPuAgAzdGQA= Date: Wed, 1 Sep 2021 12:01:36 +0000 Message-ID: <5e8f943884efbc00b839d33be5420bb8cd7a239a.camel@mediatek.com> References: <20210813065324.29220-1-yong.wu@mediatek.com> <20210813065324.29220-17-yong.wu@mediatek.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: Evolution 3.28.5-0ubuntu0.18.04.2 authentication-results: chromium.org; 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Wed, 1 Sep 2021 12:01:36 +0000 From: =?utf-8?B?WW9uZyBXdSAo5ZC05YuHKQ==?= To: "hsinyi@chromium.org" Subject: Re: [PATCH v2 16/29] iommu/mediatek: Adjust device link when it is sub-common Thread-Topic: [PATCH v2 16/29] iommu/mediatek: Adjust device link when it is sub-common Thread-Index: AQHXkBCYbO6e8lmd0kinqTzjFutBSquCVPuAgAzdGQA= Date: Wed, 1 Sep 2021 12:01:36 +0000 Message-ID: <5e8f943884efbc00b839d33be5420bb8cd7a239a.camel@mediatek.com> References: <20210813065324.29220-1-yong.wu@mediatek.com> <20210813065324.29220-17-yong.wu@mediatek.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: Evolution 3.28.5-0ubuntu0.18.04.2 authentication-results: chromium.org; dkim=none (message not signed) header.d=none;chromium.org; dmarc=none action=none header.from=mediatek.com; x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 059d757e-5523-454f-5a04-08d96d403ff0 x-ms-traffictypediagnostic: HK2PR03MB4403: x-ld-processed: a7687ede-7a6b-4ef6-bace-642f677fbe31,ExtAddr x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8882; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Tue, 2021-08-24 at 15:35 +0800, Hsin-Yi Wang wrote: > On Fri, Aug 13, 2021 at 3:03 PM Yong Wu wrote: > > > > For MM IOMMU, We always add device link between smi-common and > > IOMMU HW. > > In mt8195, we add smi-sub-common. Thus, if the node is sub-common, > > we still > > need find again to get smi-common, then do device link. > > > > Signed-off-by: Yong Wu > > --- > > drivers/iommu/mtk_iommu.c | 11 +++++++++++ > > 1 file changed, 11 insertions(+) > > > > diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c > > index a4479916ad33..a72241724adb 100644 > > --- a/drivers/iommu/mtk_iommu.c > > +++ b/drivers/iommu/mtk_iommu.c > > @@ -845,6 +845,17 @@ static int mtk_iommu_mm_dts_parse(struct > > device *dev, > > if (!smicomm_node) > > return -EINVAL; > > > > + /* Find smi-common again if this is smi-sub-common */ > > + if (of_property_read_bool(smicomm_node, > > "mediatek,smi_sub_common")) { > > + of_node_put(smicomm_node); /* put the sub common */ > > + > > + smicomm_node = of_parse_phandle(smicomm_node, > > "mediatek,smi", 0); > > This only checks 1 level here, and does not check if the mediatek,smi > of a sub-common node is not another sub-common node. > So maybe add a check that the updated node here doesn't have > mediatek,smi_sub_common property. Yes. Currently there are only 2 levels. we could confirm if it is sub- common from if it has "mediatek,smi", then "mediatek,smi_sub_common" is unnecessary. Will fix in the next version. > > > + if (!smicomm_node) { > > + dev_err(dev, "sub-comm has no common.\n"); > > + return -EINVAL; > > + } > > + } > > + > > plarbdev = of_find_device_by_node(smicomm_node); > > of_node_put(smicomm_node); > > data->smicomm_dev = &plarbdev->dev; > > -- > > 2.18.0 > > _______________________________________________ > > Linux-mediatek mailing list > > Linux-mediatek@lists.infradead.org > > http://lists.infradead.org/mailman/listinfo/linux-mediatek _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu 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=-15.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_SANE_2 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 8680AC432BE for ; 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Wed, 1 Sep 2021 12:01:36 +0000 From: =?utf-8?B?WW9uZyBXdSAo5ZC05YuHKQ==?= To: "hsinyi@chromium.org" CC: "linux-mediatek@lists.infradead.org" , "robh+dt@kernel.org" , "tfiga@chromium.org" , "linux-kernel@vger.kernel.org" , =?utf-8?B?WW91bGluIFBlaSAo6KO05Y+L5p6XKQ==?= , "drinkcat@chromium.org" , "devicetree@vger.kernel.org" , "evgreen@chromium.org" , =?utf-8?B?QW5hbiBTdW4gKOWtmeWuieWuiSk=?= , "robin.murphy@arm.com" , "joro@8bytes.org" , "iommu@lists.linux-foundation.org" , srv_heupstream , "tfiga@google.com" , "linux-arm-kernel@lists.infradead.org" , "matthias.bgg@gmail.com" , =?utf-8?B?Q2hhbyBIYW8gKOmDnei2hSk=?= , "krzysztof.kozlowski@canonical.com" , "will@kernel.org" Subject: Re: [PATCH v2 16/29] iommu/mediatek: Adjust device link when it is sub-common Thread-Topic: [PATCH v2 16/29] iommu/mediatek: Adjust device link when it is sub-common Thread-Index: AQHXkBCYbO6e8lmd0kinqTzjFutBSquCVPuAgAzdGQA= Date: Wed, 1 Sep 2021 12:01:36 +0000 Message-ID: <5e8f943884efbc00b839d33be5420bb8cd7a239a.camel@mediatek.com> References: <20210813065324.29220-1-yong.wu@mediatek.com> <20210813065324.29220-17-yong.wu@mediatek.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: Evolution 3.28.5-0ubuntu0.18.04.2 authentication-results: chromium.org; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Tue, 2021-08-24 at 15:35 +0800, Hsin-Yi Wang wrote: > On Fri, Aug 13, 2021 at 3:03 PM Yong Wu wrote: > > > > For MM IOMMU, We always add device link between smi-common and > > IOMMU HW. > > In mt8195, we add smi-sub-common. Thus, if the node is sub-common, > > we still > > need find again to get smi-common, then do device link. > > > > Signed-off-by: Yong Wu > > --- > > drivers/iommu/mtk_iommu.c | 11 +++++++++++ > > 1 file changed, 11 insertions(+) > > > > diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c > > index a4479916ad33..a72241724adb 100644 > > --- a/drivers/iommu/mtk_iommu.c > > +++ b/drivers/iommu/mtk_iommu.c > > @@ -845,6 +845,17 @@ static int mtk_iommu_mm_dts_parse(struct > > device *dev, > > if (!smicomm_node) > > return -EINVAL; > > > > + /* Find smi-common again if this is smi-sub-common */ > > + if (of_property_read_bool(smicomm_node, > > "mediatek,smi_sub_common")) { > > + of_node_put(smicomm_node); /* put the sub common */ > > + > > + smicomm_node = of_parse_phandle(smicomm_node, > > "mediatek,smi", 0); > > This only checks 1 level here, and does not check if the mediatek,smi > of a sub-common node is not another sub-common node. > So maybe add a check that the updated node here doesn't have > mediatek,smi_sub_common property. Yes. Currently there are only 2 levels. we could confirm if it is sub- common from if it has "mediatek,smi", then "mediatek,smi_sub_common" is unnecessary. Will fix in the next version. > > > + if (!smicomm_node) { > > + dev_err(dev, "sub-comm has no common.\n"); > > + return -EINVAL; > > + } > > + } > > + > > plarbdev = of_find_device_by_node(smicomm_node); > > of_node_put(smicomm_node); > > data->smicomm_dev = &plarbdev->dev; > > -- > > 2.18.0 > > _______________________________________________ > > Linux-mediatek mailing list > > Linux-mediatek@lists.infradead.org > > http://lists.infradead.org/mailman/listinfo/linux-mediatek _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek 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=-15.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, URIBL_BLOCKED,USER_AGENT_SANE_2 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 923C1C432BE for ; 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Wed, 1 Sep 2021 12:01:36 +0000 From: =?utf-8?B?WW9uZyBXdSAo5ZC05YuHKQ==?= To: "hsinyi@chromium.org" CC: "linux-mediatek@lists.infradead.org" , "robh+dt@kernel.org" , "tfiga@chromium.org" , "linux-kernel@vger.kernel.org" , =?utf-8?B?WW91bGluIFBlaSAo6KO05Y+L5p6XKQ==?= , "drinkcat@chromium.org" , "devicetree@vger.kernel.org" , "evgreen@chromium.org" , =?utf-8?B?QW5hbiBTdW4gKOWtmeWuieWuiSk=?= , "robin.murphy@arm.com" , "joro@8bytes.org" , "iommu@lists.linux-foundation.org" , srv_heupstream , "tfiga@google.com" , "linux-arm-kernel@lists.infradead.org" , "matthias.bgg@gmail.com" , =?utf-8?B?Q2hhbyBIYW8gKOmDnei2hSk=?= , "krzysztof.kozlowski@canonical.com" , "will@kernel.org" Subject: Re: [PATCH v2 16/29] iommu/mediatek: Adjust device link when it is sub-common Thread-Topic: [PATCH v2 16/29] iommu/mediatek: Adjust device link when it is sub-common Thread-Index: AQHXkBCYbO6e8lmd0kinqTzjFutBSquCVPuAgAzdGQA= Date: Wed, 1 Sep 2021 12:01:36 +0000 Message-ID: <5e8f943884efbc00b839d33be5420bb8cd7a239a.camel@mediatek.com> References: <20210813065324.29220-1-yong.wu@mediatek.com> <20210813065324.29220-17-yong.wu@mediatek.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: Evolution 3.28.5-0ubuntu0.18.04.2 authentication-results: chromium.org; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, 2021-08-24 at 15:35 +0800, Hsin-Yi Wang wrote: > On Fri, Aug 13, 2021 at 3:03 PM Yong Wu wrote: > > > > For MM IOMMU, We always add device link between smi-common and > > IOMMU HW. > > In mt8195, we add smi-sub-common. Thus, if the node is sub-common, > > we still > > need find again to get smi-common, then do device link. > > > > Signed-off-by: Yong Wu > > --- > > drivers/iommu/mtk_iommu.c | 11 +++++++++++ > > 1 file changed, 11 insertions(+) > > > > diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c > > index a4479916ad33..a72241724adb 100644 > > --- a/drivers/iommu/mtk_iommu.c > > +++ b/drivers/iommu/mtk_iommu.c > > @@ -845,6 +845,17 @@ static int mtk_iommu_mm_dts_parse(struct > > device *dev, > > if (!smicomm_node) > > return -EINVAL; > > > > + /* Find smi-common again if this is smi-sub-common */ > > + if (of_property_read_bool(smicomm_node, > > "mediatek,smi_sub_common")) { > > + of_node_put(smicomm_node); /* put the sub common */ > > + > > + smicomm_node = of_parse_phandle(smicomm_node, > > "mediatek,smi", 0); > > This only checks 1 level here, and does not check if the mediatek,smi > of a sub-common node is not another sub-common node. > So maybe add a check that the updated node here doesn't have > mediatek,smi_sub_common property. Yes. Currently there are only 2 levels. we could confirm if it is sub- common from if it has "mediatek,smi", then "mediatek,smi_sub_common" is unnecessary. Will fix in the next version. > > > + if (!smicomm_node) { > > + dev_err(dev, "sub-comm has no common.\n"); > > + return -EINVAL; > > + } > > + } > > + > > plarbdev = of_find_device_by_node(smicomm_node); > > of_node_put(smicomm_node); > > data->smicomm_dev = &plarbdev->dev; > > -- > > 2.18.0 > > _______________________________________________ > > Linux-mediatek mailing list > > Linux-mediatek@lists.infradead.org > > http://lists.infradead.org/mailman/listinfo/linux-mediatek _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel