From patchwork Thu Aug 5 08:07:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shameerali Kolothum Thodi X-Patchwork-Id: 492240 Delivered-To: patch@linaro.org Received: by 2002:a05:6638:396:0:0:0:0 with SMTP id y22csp55082jap; Thu, 5 Aug 2021 01:08:47 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxLybdGkepZne6Hktkv1tuzQCTlmEQTQR8CFiawmvcMsoLtQvR5/I+qt/n+/k+ZV8K9v1nv X-Received: by 2002:a17:906:ae91:: with SMTP id md17mr3618904ejb.105.1628150927487; Thu, 05 Aug 2021 01:08:47 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1628150927; cv=none; d=google.com; s=arc-20160816; b=UvywgrR8eQo2Bn0HiJhF6JxjWDR3zLEVensMfrhbIhvswVUw/wyeH8uCyzeJLZsVeK 9zYmv6SgoVIGb1ppXzT8dN65aPGlOGwbJ+b8YRgNngzJRMmbVLsp91r4pEHEGjzpGtmv gtXS5mGB3KT8Cp1yaHuS6Uj2YpHkXNdJBc6hUB2uxpVAho2wazx4FmbGycMOzSLQQxwq +rzudiWOUV1E0cxCeuGEUV1nDV8pEn/ep8+fvuTr43gMQUpbsCPN1cQYsbIPfSvE9CTl 8v+oFDjUk0VxVRRPEYbSWf7zuajyq7PWJQl9bwGBhnQ66+sUKTRRURkTlVhBpOUhEaS8 8Czw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:in-reply-to:message-id :date:subject:cc:to:from; bh=NGMMLDAwgjy2DHBxsNtABryITZnNnq19kNJr7Bb5FGw=; b=maPikDJ1KzpFJLdCtXTvNMglFekOeFdBhW+rIKttjfta9QoR8e5qp5tOi2PsHYviY3 /+GeohqBJeC+pRUv3wmWVoplWd+Ds/UUj61PTEZWPivRfqSiqLsY2Fzr26zzUc3Sx4f6 gk5G82RpU5i9QCin4cAejmoJzzusH3LxFcdyM/aNUF+UPtoKculeNxm4L2R/H7Tgvgql k7tfr15/5qSEDqoP0O0UH021v4KXBgXxO2z3zU6eVxNgLB1A4mr9i03yo5+Gdcu0vYhh 6wu++9bPQG8oJ5lVfnp1nnGJKaOf/TZhQSgjdJAm/Ru1i/zZf8Y5cNfh07VZtDYr91ff Bjlw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=huawei.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id g18si5224762ejp.458.2021.08.05.01.08.47; Thu, 05 Aug 2021 01:08:47 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-acpi-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-acpi-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=huawei.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232418AbhHEIJA (ORCPT + 4 others); Thu, 5 Aug 2021 04:09:00 -0400 Received: from frasgout.his.huawei.com ([185.176.79.56]:3585 "EHLO frasgout.his.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229578AbhHEII7 (ORCPT ); Thu, 5 Aug 2021 04:08:59 -0400 Received: from fraeml743-chm.china.huawei.com (unknown [172.18.147.226]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4GgLpM29jYz6F8FR; Thu, 5 Aug 2021 16:08:27 +0800 (CST) Received: from lhreml710-chm.china.huawei.com (10.201.108.61) by fraeml743-chm.china.huawei.com (10.206.15.224) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 5 Aug 2021 10:08:44 +0200 Received: from A2006125610.china.huawei.com (10.47.91.4) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 5 Aug 2021 09:08:37 +0100 From: Shameer Kolothum To: , , CC: , , , , , , , , , , , Subject: [PATCH v7 1/9] iommu: Introduce a union to struct iommu_resv_region Date: Thu, 5 Aug 2021 09:07:16 +0100 Message-ID: <20210805080724.480-2-shameerali.kolothum.thodi@huawei.com> X-Mailer: git-send-email 2.12.0.windows.1 In-Reply-To: <20210805080724.480-1-shameerali.kolothum.thodi@huawei.com> References: <20210805080724.480-1-shameerali.kolothum.thodi@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.47.91.4] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org A union is introduced to struct iommu_resv_region to hold any firmware specific data. This is in preparation to add support for IORT RMR reserve regions and the union now holds the RMR specific information. Signed-off-by: Shameer Kolothum --- include/linux/iommu.h | 11 +++++++++++ 1 file changed, 11 insertions(+) -- 2.17.1 Tested-by: Steven Price diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 32d448050bf7..bd0e4641c569 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -114,6 +114,13 @@ enum iommu_resv_type { IOMMU_RESV_SW_MSI, }; +struct iommu_iort_rmr_data { +#define IOMMU_RMR_REMAP_PERMITTED (1 << 0) + u32 flags; + u32 sid; /* Stream Id associated with RMR entry */ + void *smmu; /* Associated IORT SMMU node pointer */ +}; + /** * struct iommu_resv_region - descriptor for a reserved memory region * @list: Linked list pointers @@ -121,6 +128,7 @@ enum iommu_resv_type { * @length: Length of the region in bytes * @prot: IOMMU Protection flags (READ/WRITE/...) * @type: Type of the reserved region + * @rmr: ACPI IORT RMR specific data */ struct iommu_resv_region { struct list_head list; @@ -128,6 +136,9 @@ struct iommu_resv_region { size_t length; int prot; enum iommu_resv_type type; + union { + struct iommu_iort_rmr_data rmr; + } fw_data; }; /**