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 E20C2C433F5 for ; Sat, 7 May 2022 15:03:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1446591AbiEGPHk (ORCPT ); Sat, 7 May 2022 11:07:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59320 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1377471AbiEGPHa (ORCPT ); Sat, 7 May 2022 11:07:30 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EE66513F31; Sat, 7 May 2022 08:03:42 -0700 (PDT) Received: from dggpemm500023.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4KwVxL4LtKzGpL4; Sat, 7 May 2022 23:00:54 +0800 (CST) Received: from dggpemm500002.china.huawei.com (7.185.36.229) by dggpemm500023.china.huawei.com (7.185.36.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Sat, 7 May 2022 23:03:39 +0800 Received: from [10.174.178.247] (10.174.178.247) by dggpemm500002.china.huawei.com (7.185.36.229) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Sat, 7 May 2022 23:03:39 +0800 Subject: Re: [PATCH 2/2] ACPI: ARM Performance Monitoring Unit Table (APMT) initial support To: Besar Wicaksono , , , , , , , CC: , , , , , , References: <20220419205432.46021-1-bwicaksono@nvidia.com> <20220419205432.46021-3-bwicaksono@nvidia.com> From: Hanjun Guo Message-ID: Date: Sat, 7 May 2022 23:03:38 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: <20220419205432.46021-3-bwicaksono@nvidia.com> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.178.247] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To dggpemm500002.china.huawei.com (7.185.36.229) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2022/4/20 4:54, Besar Wicaksono wrote: > ARM Performance Monitoring Unit Table describes the properties of PMU > support in ARM-based system. The APMT table contains a list of nodes, > each represents a PMU in the system that conforms to ARM CoreSight PMU > architecture. The properties of each node include information required > to access the PMU (e.g. MMIO base address, interrupt number) and also > identification. For more detailed information, please refer to the > specification below: > * APMT: https://developer.arm.com/documentation/den0117/latest > * ARM Coresight PMU: > https://developer.arm.com/documentation/ihi0091/latest > > The initial support adds the detection of APMT table and generic > infrastructure to create platform devices for ARM CoreSight PMUs. > Similar to IORT the root pointer of APMT is preserved during runtime > and each PMU platform device is given a pointer to the corresponding > APMT node. > > Signed-off-by: Besar Wicaksono > --- > arch/arm64/Kconfig | 1 + > drivers/acpi/arm64/Kconfig | 3 + > drivers/acpi/arm64/Makefile | 1 + > drivers/acpi/arm64/apmt.c | 176 ++++++++++++++++++++++++++++++++++++ > drivers/acpi/bus.c | 2 + > include/linux/acpi_apmt.h | 19 ++++ > 6 files changed, 202 insertions(+) > create mode 100644 drivers/acpi/arm64/apmt.c > create mode 100644 include/linux/acpi_apmt.h > > +++ b/drivers/acpi/arm64/apmt.c > @@ -0,0 +1,176 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * ARM APMT table support. > + * Design document number: ARM DEN0117. > + * > + * Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. > + * > + */ > + > +#define pr_fmt(fmt) "ACPI: APMT: " fmt > + > +#include > +#include > +#include > +#include Please include , here is the similar patch: https://lore.kernel.org/lkml/CAJZ5v0gqr97AFuk855UZkcVpDnmj1Q6B2PE32zWmx4eKxbNvCw@mail.gmail.com/T/ Thanks Hanjun