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[2620:137:e000::1:20]) by mx.google.com with ESMTP id ka5-20020a170907990500b007ae29da29d3si7405588ejc.278.2022.11.14.01.03.54; Mon, 14 Nov 2022 01:04:22 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236650AbiKNJC6 (ORCPT + 99 others); Mon, 14 Nov 2022 04:02:58 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45766 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236706AbiKNJCy (ORCPT ); Mon, 14 Nov 2022 04:02:54 -0500 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 66A921109; Mon, 14 Nov 2022 01:02:52 -0800 (PST) Received: from dggpeml500021.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4N9jxf6wqqzmVyd; Mon, 14 Nov 2022 17:02:30 +0800 (CST) Received: from dggpeml500002.china.huawei.com (7.185.36.158) by dggpeml500021.china.huawei.com (7.185.36.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Mon, 14 Nov 2022 17:02:50 +0800 Received: from localhost.localdomain (10.69.192.56) by dggpeml500002.china.huawei.com (7.185.36.158) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Mon, 14 Nov 2022 17:02:50 +0800 From: Junhao He To: , , , , , CC: , , , , , , , , , , Subject: [PATCH v13 0/2] Add support for UltraSoc System Memory Buffer Date: Mon, 14 Nov 2022 17:03:14 +0800 Message-ID: <20221114090316.63157-1-hejunhao3@huawei.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 X-Originating-IP: [10.69.192.56] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpeml500002.china.huawei.com (7.185.36.158) X-CFilter-Loop: Reflected X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1749461670107353424?= X-GMAIL-MSGID: =?utf-8?q?1749461670107353424?= Add support for UltraSoc System Memory Buffer. Change since v12: - Modify the code style and add "#ifdef CONFIG_ACPI" according to Jonathan's comment. - Address the comments from Yicong. - Link: https://lore.kernel.org/lkml/20221109135008.9485-1-hejunhao3@huawei.com/ Change since v11: - Modify the code style and rename the macro according to Jonathan's comment. - Link: https://lore.kernel.org/lkml/20221107130624.59886-1-hejunhao3@huawei.com/ Change since v10: - Rebase onto v6.1-rc4, included similar sysfs register accessors (as same as James's patch) - Link: https://lore.kernel.org/lkml/20221022115929.7503-1-hejunhao3@huawei.com/ Change since v9: - Update the Contact tag in SMB document. - Replace the spinlock with mutex. - Do some clean-ups in "smb_enable()" and "smb_release()". - Use classic memory mapped interface. - Link: https://lore.kernel.org/linux-arm-kernel/20220818132231.28240-1-hejunhao3@huawei.com/ Change since v8: - Insert a blank line at the end of the config tag in Kconfig according to Randy's comment. - Link: https://lore.kernel.org/linux-arm-kernel/20220816131634.38195-1-hejunhao3@huawei.com/ Change since v7: - Use the macros for register bit flags and numbers of resource. - Cleanup punctuation. - Update the Date tag and the KernelVersion tag in the document. - Link: https://lore.kernel.org/lkml/20220712091353.34540-1-hejunhao3@huawei.com/ Change since v6: - Modify the code style and driver description according to Suzuki's comment. - Modify configuration of "drvdata->reading", to void problems in open/read concurrency scenario. - Rename the macro of "SMB_FLOW_MASK". - Use the "handle->head" to determine the page number and offset. - Link: https://lore.kernel.org/linux-arm-kernel/20220606130223.57354-1-liuqi115@huawei.com/ Change since v5: - Address the comments from Suzuki, add some comments in SMB document, and modify configuration of "drvdata->reading", to void problems in multi-core concurrency scenario - Link: https://lore.kernel.org/linux-arm-kernel/20220416083953.52610-1-liuqi115@huawei.com/ Change since v4: - Add a simple document of SMB driver according to Suzuki's comment. - Address the comments from Suzuki. - Link: https://lore.kernel.org/linux-arm-kernel/20220128061755.31909-1-liuqi115@huawei.com/ Change since v3: - Modify the file header according to community specifications. - Address the comments from Mathieu. - Link: https://lore.kernel.org/linux-arm-kernel/20211118110016.40398-1-liuqi115@huawei.com/ Change since v2: - Move ultrasoc driver to drivers/hwtracing/coresight by Mathieu's comment. - Link: https://lists.linaro.org/pipermail/coresight/2021-November/007310.html Change since v1: - Drop the document of UltraSoc according to Mathieu's comment. - Add comments to explain some private hardware settings. - Address the comments from Mathieu. - Link: https://lists.linaro.org/pipermail/coresight/2021-August/006842.html Change since RFC: - Move driver to drivers/hwtracing/coresight/ultrasoc. - Remove ultrasoc-axi-com.c, as AXI-COM doesn't need to be configured in basic tracing function. - Remove ultrasoc.c as SMB does not need to register with the ultrasoc core. - Address the comments from Mathieu and Suzuki. - Link: https://lists.linaro.org/pipermail/coresight/2021-June/006535.html Qi Liu (2): drivers/coresight: Add UltraSoc System Memory Buffer driver Documentation: Add document for UltraSoc SMB drivers .../sysfs-bus-coresight-devices-ultra_smb | 31 + .../trace/coresight/ultrasoc-smb.rst | 82 +++ drivers/hwtracing/coresight/Kconfig | 11 + drivers/hwtracing/coresight/Makefile | 1 + drivers/hwtracing/coresight/ultrasoc-smb.c | 646 ++++++++++++++++++ drivers/hwtracing/coresight/ultrasoc-smb.h | 120 ++++ 6 files changed, 891 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-coresight-devices-ultra_smb create mode 100644 Documentation/trace/coresight/ultrasoc-smb.rst create mode 100644 drivers/hwtracing/coresight/ultrasoc-smb.c create mode 100644 drivers/hwtracing/coresight/ultrasoc-smb.h