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Tue, 01 Sep 2020 22:40:16 -0800 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 1 Sep 2020 23:40:14 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 2 Sep 2020 14:40:12 +0800 Received: from [172.21.77.33] (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 2 Sep 2020 14:40:12 +0800 Message-ID: <1599028813.32069.1.camel@mtkswgap22> Subject: Re: [PATCH v7] Add MediaTek MT6779 devapc driver From: Neal Liu To: Rob Herring , Chun-Kuang Hu , Matthias Brugger Date: Wed, 2 Sep 2020 14:40:13 +0800 In-Reply-To: <1598497593-15781-1-git-send-email-neal.liu@mediatek.com> References: <1598497593-15781-1-git-send-email-neal.liu@mediatek.com> X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200902_025046_708031_4A427AB5 X-CRM114-Status: GOOD ( 18.10 ) 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 , "linux-mediatek@lists.infradead.org" , Neal Liu , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Hi Rob, Matthias, Chun-Kuang, Gentle ping for this patch set. Thanks -Neal On Thu, 2020-08-27 at 11:06 +0800, Neal Liu wrote: > These patch series introduce a MediaTek MT6779 devapc driver. > > 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. > > changes since v6: > - remove unnecessary mask/unmask module irq during ISR. > > changes since v5: > - remove redundant write reg operation. > - use static variable of vio_dbgs instead. > - add stop_devapc() if driver is removed. > > changes since v4: > - refactor data structure. > - merge two simple functions into one. > - refactor register setting to prevent too many function call overhead. > > changes since v3: > - revise violation handling flow to make it more easily to understand > hardware behavior. > - add more comments to understand how hardware works. > > changes since v2: > - pass platform info through DT data. > - remove unnecessary function. > - remove slave_type because it always equals to 1 in current support SoC. > - use vio_idx_num instread of list all devices' index. > - add more comments to describe hardware behavior. > > changes since v1: > - move SoC specific part to DT data. > - remove unnecessary boundary check. > - remove unnecessary data type declaration. > - use read_poll_timeout() instread of for loop polling. > - revise coding style elegantly. > > > *** BLURB HERE *** > > Neal Liu (2): > dt-bindings: devapc: add bindings for mtk-devapc > soc: mediatek: add mt6779 devapc driver > > .../bindings/soc/mediatek/devapc.yaml | 58 ++++ > drivers/soc/mediatek/Kconfig | 9 + > drivers/soc/mediatek/Makefile | 1 + > drivers/soc/mediatek/mtk-devapc.c | 305 ++++++++++++++++++ > 4 files changed, 373 insertions(+) > create mode 100644 Documentation/devicetree/bindings/soc/mediatek/devapc.yaml > create mode 100644 drivers/soc/mediatek/mtk-devapc.c > _______________________________________________ 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=-5.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED,USER_AGENT_SANE_2 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 5F468C433E2 for ; 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Wed, 02 Sep 2020 06:50:49 +0000 X-UUID: 627b691d45a34b58a9b84c4c0986285c-20200901 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:MIME-Version:Content-Type:References:In-Reply-To:Date:CC:To:From:Subject:Message-ID; bh=8IuUV5he8cIh84ZEbWw62FnvkLiyHdpDvFusK86GRYY=; b=SAeqizcr1H4YJbaVLfk3xuKLqPkRfpNgI1aCyPe3UqPbiGRv3fC5EQrwSo8L8LX4vpLjDZBSODyfaPEBAoWTxo4SXQ95yYAnQznmkSPRXPfwnYgDwW9mhI4Pjvc+3YBkiTWwxN0NFV0vvMdXry+lvFlcgp7DH5aXkc0Nw9xhn8o=; X-UUID: 627b691d45a34b58a9b84c4c0986285c-20200901 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1404313755; Tue, 01 Sep 2020 22:40:16 -0800 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 1 Sep 2020 23:40:14 -0700 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 2 Sep 2020 14:40:12 +0800 Received: from [172.21.77.33] (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 2 Sep 2020 14:40:12 +0800 Message-ID: <1599028813.32069.1.camel@mtkswgap22> Subject: Re: [PATCH v7] Add MediaTek MT6779 devapc driver From: Neal Liu To: Rob Herring , Chun-Kuang Hu , Matthias Brugger Date: Wed, 2 Sep 2020 14:40:13 +0800 In-Reply-To: <1598497593-15781-1-git-send-email-neal.liu@mediatek.com> References: <1598497593-15781-1-git-send-email-neal.liu@mediatek.com> X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200902_025046_708031_4A427AB5 X-CRM114-Status: GOOD ( 18.10 ) X-BeenThere: linux-arm-kernel@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 , "linux-mediatek@lists.infradead.org" , Neal Liu , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; 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 Hi Rob, Matthias, Chun-Kuang, Gentle ping for this patch set. Thanks -Neal On Thu, 2020-08-27 at 11:06 +0800, Neal Liu wrote: > These patch series introduce a MediaTek MT6779 devapc driver. > > 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. > > changes since v6: > - remove unnecessary mask/unmask module irq during ISR. > > changes since v5: > - remove redundant write reg operation. > - use static variable of vio_dbgs instead. > - add stop_devapc() if driver is removed. > > changes since v4: > - refactor data structure. > - merge two simple functions into one. > - refactor register setting to prevent too many function call overhead. > > changes since v3: > - revise violation handling flow to make it more easily to understand > hardware behavior. > - add more comments to understand how hardware works. > > changes since v2: > - pass platform info through DT data. > - remove unnecessary function. > - remove slave_type because it always equals to 1 in current support SoC. > - use vio_idx_num instread of list all devices' index. > - add more comments to describe hardware behavior. > > changes since v1: > - move SoC specific part to DT data. > - remove unnecessary boundary check. > - remove unnecessary data type declaration. > - use read_poll_timeout() instread of for loop polling. > - revise coding style elegantly. > > > *** BLURB HERE *** > > Neal Liu (2): > dt-bindings: devapc: add bindings for mtk-devapc > soc: mediatek: add mt6779 devapc driver > > .../bindings/soc/mediatek/devapc.yaml | 58 ++++ > drivers/soc/mediatek/Kconfig | 9 + > drivers/soc/mediatek/Makefile | 1 + > drivers/soc/mediatek/mtk-devapc.c | 305 ++++++++++++++++++ > 4 files changed, 373 insertions(+) > create mode 100644 Documentation/devicetree/bindings/soc/mediatek/devapc.yaml > create mode 100644 drivers/soc/mediatek/mtk-devapc.c > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=-5.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_SANE_2 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 03271C433E2 for ; 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X-UUID: 13d9684db23f408e8e3c481806eabd02-20200902 Received: from mtkcas10.mediatek.inc [(172.21.101.39)] by mailgw01.mediatek.com (envelope-from ) (Cellopoint E-mail Firewall v4.1.14 Build 0819 with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1720327968; Wed, 02 Sep 2020 14:40:14 +0800 Received: from mtkcas08.mediatek.inc (172.21.101.126) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 2 Sep 2020 14:40:12 +0800 Received: from [172.21.77.33] (172.21.77.33) by mtkcas08.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Wed, 2 Sep 2020 14:40:12 +0800 Message-ID: <1599028813.32069.1.camel@mtkswgap22> Subject: Re: [PATCH v7] Add MediaTek MT6779 devapc driver From: Neal Liu To: Rob Herring , Chun-Kuang Hu , Matthias Brugger CC: Neal Liu , "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-mediatek@lists.infradead.org" , lkml , wsd_upstream Date: Wed, 2 Sep 2020 14:40:13 +0800 In-Reply-To: <1598497593-15781-1-git-send-email-neal.liu@mediatek.com> References: <1598497593-15781-1-git-send-email-neal.liu@mediatek.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 MIME-Version: 1.0 X-MTK: N Content-Transfer-Encoding: base64 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org SGkgUm9iLCBNYXR0aGlhcywgQ2h1bi1LdWFuZywNCg0KR2VudGxlIHBpbmcgZm9yIHRoaXMgcGF0 Y2ggc2V0Lg0KVGhhbmtzDQoNCi1OZWFsDQoNCk9uIFRodSwgMjAyMC0wOC0yNyBhdCAxMTowNiAr MDgwMCwgTmVhbCBMaXUgd3JvdGU6DQo+IFRoZXNlIHBhdGNoIHNlcmllcyBpbnRyb2R1Y2UgYSBN ZWRpYVRlayBNVDY3NzkgZGV2YXBjIGRyaXZlci4NCj4gDQo+IE1lZGlhVGVrIGJ1cyBmYWJyaWMg cHJvdmlkZXMgVHJ1c3Rab25lIHNlY3VyaXR5IHN1cHBvcnQgYW5kIGRhdGEgcHJvdGVjdGlvbiB0 byBwcmV2ZW50IHNsYXZlcyBmcm9tIGJlaW5nIGFjY2Vzc2VkIGJ5IHVuZXhwZWN0ZWQgbWFzdGVy cy4NCj4gVGhlIHNlY3VyaXR5IHZpb2xhdGlvbiBpcyBsb2dnZWQgYW5kIHNlbnQgdG8gdGhlIHBy b2Nlc3NvciBmb3IgZnVydGhlciBhbmFseXNpcyBvciBjb3VudGVybWVhc3VyZXMuDQo+IA0KPiBB bnkgb2NjdXJyZW5jZSBvZiBzZWN1cml0eSB2aW9sYXRpb24gd291bGQgcmFpc2UgYW4gaW50ZXJy dXB0LCBhbmQgaXQgd2lsbCBiZSBoYW5kbGVkIGJ5IG10ay1kZXZhcGMgZHJpdmVyLg0KPiBUaGUg dmlvbGF0aW9uIGluZm9ybWF0aW9uIGlzIHByaW50ZWQgaW4gb3JkZXIgdG8gZmluZCB0aGUgbXVy ZGVyZXIuDQo+IA0KPiBjaGFuZ2VzIHNpbmNlIHY2Og0KPiAtIHJlbW92ZSB1bm5lY2Vzc2FyeSBt YXNrL3VubWFzayBtb2R1bGUgaXJxIGR1cmluZyBJU1IuDQo+IA0KPiBjaGFuZ2VzIHNpbmNlIHY1 Og0KPiAtIHJlbW92ZSByZWR1bmRhbnQgd3JpdGUgcmVnIG9wZXJhdGlvbi4NCj4gLSB1c2Ugc3Rh dGljIHZhcmlhYmxlIG9mIHZpb19kYmdzIGluc3RlYWQuDQo+IC0gYWRkIHN0b3BfZGV2YXBjKCkg aWYgZHJpdmVyIGlzIHJlbW92ZWQuDQo+IA0KPiBjaGFuZ2VzIHNpbmNlIHY0Og0KPiAtIHJlZmFj dG9yIGRhdGEgc3RydWN0dXJlLg0KPiAtIG1lcmdlIHR3byBzaW1wbGUgZnVuY3Rpb25zIGludG8g b25lLg0KPiAtIHJlZmFjdG9yIHJlZ2lzdGVyIHNldHRpbmcgdG8gcHJldmVudCB0b28gbWFueSBm dW5jdGlvbiBjYWxsIG92ZXJoZWFkLg0KPiANCj4gY2hhbmdlcyBzaW5jZSB2MzoNCj4gLSByZXZp c2UgdmlvbGF0aW9uIGhhbmRsaW5nIGZsb3cgdG8gbWFrZSBpdCBtb3JlIGVhc2lseSB0byB1bmRl cnN0YW5kDQo+ICAgaGFyZHdhcmUgYmVoYXZpb3IuDQo+IC0gYWRkIG1vcmUgY29tbWVudHMgdG8g dW5kZXJzdGFuZCBob3cgaGFyZHdhcmUgd29ya3MuDQo+IA0KPiBjaGFuZ2VzIHNpbmNlIHYyOg0K PiAtIHBhc3MgcGxhdGZvcm0gaW5mbyB0aHJvdWdoIERUIGRhdGEuDQo+IC0gcmVtb3ZlIHVubmVj ZXNzYXJ5IGZ1bmN0aW9uLg0KPiAtIHJlbW92ZSBzbGF2ZV90eXBlIGJlY2F1c2UgaXQgYWx3YXlz IGVxdWFscyB0byAxIGluIGN1cnJlbnQgc3VwcG9ydCBTb0MuDQo+IC0gdXNlIHZpb19pZHhfbnVt IGluc3RyZWFkIG9mIGxpc3QgYWxsIGRldmljZXMnIGluZGV4Lg0KPiAtIGFkZCBtb3JlIGNvbW1l bnRzIHRvIGRlc2NyaWJlIGhhcmR3YXJlIGJlaGF2aW9yLg0KPiANCj4gY2hhbmdlcyBzaW5jZSB2 MToNCj4gLSBtb3ZlIFNvQyBzcGVjaWZpYyBwYXJ0IHRvIERUIGRhdGEuDQo+IC0gcmVtb3ZlIHVu bmVjZXNzYXJ5IGJvdW5kYXJ5IGNoZWNrLg0KPiAtIHJlbW92ZSB1bm5lY2Vzc2FyeSBkYXRhIHR5 cGUgZGVjbGFyYXRpb24uDQo+IC0gdXNlIHJlYWRfcG9sbF90aW1lb3V0KCkgaW5zdHJlYWQgb2Yg Zm9yIGxvb3AgcG9sbGluZy4NCj4gLSByZXZpc2UgY29kaW5nIHN0eWxlIGVsZWdhbnRseS4NCj4g DQo+IA0KPiAqKiogQkxVUkIgSEVSRSAqKioNCj4gDQo+IE5lYWwgTGl1ICgyKToNCj4gICBkdC1i aW5kaW5nczogZGV2YXBjOiBhZGQgYmluZGluZ3MgZm9yIG10ay1kZXZhcGMNCj4gICBzb2M6IG1l ZGlhdGVrOiBhZGQgbXQ2Nzc5IGRldmFwYyBkcml2ZXINCj4gDQo+ICAuLi4vYmluZGluZ3Mvc29j L21lZGlhdGVrL2RldmFwYy55YW1sICAgICAgICAgfCAgNTggKysrKw0KPiAgZHJpdmVycy9zb2Mv bWVkaWF0ZWsvS2NvbmZpZyAgICAgICAgICAgICAgICAgIHwgICA5ICsNCj4gIGRyaXZlcnMvc29j L21lZGlhdGVrL01ha2VmaWxlICAgICAgICAgICAgICAgICB8ICAgMSArDQo+ICBkcml2ZXJzL3Nv Yy9tZWRpYXRlay9tdGstZGV2YXBjLmMgICAgICAgICAgICAgfCAzMDUgKysrKysrKysrKysrKysr KysrDQo+ICA0IGZpbGVzIGNoYW5nZWQsIDM3MyBpbnNlcnRpb25zKCspDQo+ICBjcmVhdGUgbW9k ZSAxMDA2NDQgRG9jdW1lbnRhdGlvbi9kZXZpY2V0cmVlL2JpbmRpbmdzL3NvYy9tZWRpYXRlay9k ZXZhcGMueWFtbA0KPiAgY3JlYXRlIG1vZGUgMTAwNjQ0IGRyaXZlcnMvc29jL21lZGlhdGVrL210 ay1kZXZhcGMuYw0KPiANCg0K