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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DABCC4332F for ; Wed, 23 Nov 2022 12:38:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236770AbiKWMiV (ORCPT ); Wed, 23 Nov 2022 07:38:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43590 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237163AbiKWMiJ (ORCPT ); Wed, 23 Nov 2022 07:38:09 -0500 Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3376857B63; Wed, 23 Nov 2022 04:38:07 -0800 (PST) Received: from dggpeml500023.china.huawei.com (unknown [172.30.72.53]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4NHLDS0FH9zJnnb; Wed, 23 Nov 2022 20:34:48 +0800 (CST) Received: from dggpeml500002.china.huawei.com (7.185.36.158) by dggpeml500023.china.huawei.com (7.185.36.114) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Wed, 23 Nov 2022 20:38:04 +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; Wed, 23 Nov 2022 20:38:03 +0800 From: Junhao He To: , , , , , CC: , , , , , , , , , , Subject: [PATCH v14 0/2] Add support for UltraSoc System Memory Buffer Date: Wed, 23 Nov 2022 20:38:21 +0800 Message-ID: <20221123123823.27973-1-hejunhao3@huawei.com> X-Mailer: git-send-email 2.33.0 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.69.192.56] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpeml500002.china.huawei.com (7.185.36.158) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support for UltraSoc System Memory Buffer. Change since v13: - Modify document and the patches description according to Bagas's comment. - Add dependency on config ACPI, drop redundant enable hw in smb_update_buffer(), Modify smb_purge_data() description according to Suzuki's comment. - Link: https://lore.kernel.org/lkml/20221114090316.63157-1-hejunhao3@huawei.com/ Change since v12: - Modify the code style and add "#ifdef CONFIG_ACPI" according to Jonathan's comment. - Address the comments from Yicong, included drop "buf_base"__iomem attribute, modify the "reading" type to bool and fix FIELD_PREP. - 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 driver .../sysfs-bus-coresight-devices-ultra_smb | 31 + .../trace/coresight/ultrasoc-smb.rst | 83 +++ drivers/hwtracing/coresight/Kconfig | 12 + drivers/hwtracing/coresight/Makefile | 1 + drivers/hwtracing/coresight/ultrasoc-smb.c | 658 ++++++++++++++++++ drivers/hwtracing/coresight/ultrasoc-smb.h | 129 ++++ 6 files changed, 914 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 -- 2.33.0