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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 1F282C43331 for ; Fri, 15 Jan 2021 12:15:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 04F49205F4 for ; Fri, 15 Jan 2021 12:15:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731217AbhAOMPk (ORCPT ); Fri, 15 Jan 2021 07:15:40 -0500 Received: from foss.arm.com ([217.140.110.172]:37740 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730758AbhAOMPe (ORCPT ); Fri, 15 Jan 2021 07:15:34 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 62FA11480; Fri, 15 Jan 2021 04:14:47 -0800 (PST) Received: from usa.arm.com (a074945.blr.arm.com [10.162.16.71]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E01B63F70D; Fri, 15 Jan 2021 04:14:42 -0800 (PST) From: Vivek Gautam To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, virtualization@lists.linux-foundation.org Cc: joro@8bytes.org, will.deacon@arm.com, mst@redhat.com, robin.murphy@arm.com, jean-philippe@linaro.org, eric.auger@redhat.com, alex.williamson@redhat.com, kevin.tian@intel.com, jacob.jun.pan@linux.intel.com, yi.l.liu@intel.com, lorenzo.pieralisi@arm.com, shameerali.kolothum.thodi@huawei.com, vivek.gautam@arm.com Subject: [PATCH RFC v1 11/15] iommu/virtio: Add headers for binding pasid table in iommu Date: Fri, 15 Jan 2021 17:43:38 +0530 Message-Id: <20210115121342.15093-12-vivek.gautam@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210115121342.15093-1-vivek.gautam@arm.com> References: <20210115121342.15093-1-vivek.gautam@arm.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jean-Philippe Brucker Add the required UAPI defines for binding pasid tables in virtio-iommu. This mode allows to hand stage-1 page tables over to the guest. Signed-off-by: Jean-Philippe Brucker [Vivek: Refactor to cleanup headers for invalidation] Signed-off-by: Vivek Gautam Cc: Joerg Roedel Cc: Will Deacon Cc: Michael S. Tsirkin Cc: Robin Murphy Cc: Jean-Philippe Brucker Cc: Eric Auger Cc: Alex Williamson Cc: Kevin Tian Cc: Jacob Pan Cc: Liu Yi L Cc: Lorenzo Pieralisi Cc: Shameerali Kolothum Thodi --- include/uapi/linux/virtio_iommu.h | 68 +++++++++++++++++++++++++++++++ 1 file changed, 68 insertions(+) diff --git a/include/uapi/linux/virtio_iommu.h b/include/uapi/linux/virtio_iommu.h index 8a0624bab4b2..3481e4a3dd24 100644 --- a/include/uapi/linux/virtio_iommu.h +++ b/include/uapi/linux/virtio_iommu.h @@ -16,6 +16,7 @@ #define VIRTIO_IOMMU_F_BYPASS 3 #define VIRTIO_IOMMU_F_PROBE 4 #define VIRTIO_IOMMU_F_MMIO 5 +#define VIRTIO_IOMMU_F_ATTACH_TABLE 6 struct virtio_iommu_range_64 { __le64 start; @@ -44,6 +45,8 @@ struct virtio_iommu_config { #define VIRTIO_IOMMU_T_MAP 0x03 #define VIRTIO_IOMMU_T_UNMAP 0x04 #define VIRTIO_IOMMU_T_PROBE 0x05 +#define VIRTIO_IOMMU_T_ATTACH_TABLE 0x06 +#define VIRTIO_IOMMU_T_INVALIDATE 0x07 /* Status types */ #define VIRTIO_IOMMU_S_OK 0x00 @@ -82,6 +85,37 @@ struct virtio_iommu_req_detach { struct virtio_iommu_req_tail tail; }; +struct virtio_iommu_req_attach_table { + struct virtio_iommu_req_head head; + __le32 domain; + __le32 endpoint; + __le16 format; + __u8 reserved[62]; + struct virtio_iommu_req_tail tail; +}; + +#define VIRTIO_IOMMU_PSTF_ARM_SMMU_V3_LINEAR 0x0 +#define VIRTIO_IOMMU_PSTF_ARM_SMMU_V3_4KL2 0x1 +#define VIRTIO_IOMMU_PSTF_ARM_SMMU_V3_64KL2 0x2 + +#define VIRTIO_IOMMU_PSTF_ARM_SMMU_V3_DSS_TERM 0x0 +#define VIRTIO_IOMMU_PSTF_ARM_SMMU_V3_DSS_BYPASS 0x1 +#define VIRTIO_IOMMU_PSTF_ARM_SMMU_V3_DSS_0 0x2 + +/* Arm SMMUv3 PASID Table Descriptor */ +struct virtio_iommu_req_attach_pst_arm { + struct virtio_iommu_req_head head; + __le32 domain; + __le32 endpoint; + __le16 format; + __u8 s1fmt; + __u8 s1dss; + __le64 s1contextptr; + __le32 s1cdmax; + __u8 reserved[48]; + struct virtio_iommu_req_tail tail; +}; + #define VIRTIO_IOMMU_MAP_F_READ (1 << 0) #define VIRTIO_IOMMU_MAP_F_WRITE (1 << 1) #define VIRTIO_IOMMU_MAP_F_MMIO (1 << 2) @@ -188,6 +222,40 @@ struct virtio_iommu_req_probe { */ }; +#define VIRTIO_IOMMU_INVAL_G_DOMAIN (1 << 0) +#define VIRTIO_IOMMU_INVAL_G_PASID (1 << 1) +#define VIRTIO_IOMMU_INVAL_G_VA (1 << 2) + +#define VIRTIO_IOMMU_INV_T_IOTLB (1 << 0) +#define VIRTIO_IOMMU_INV_T_DEV_IOTLB (1 << 1) +#define VIRTIO_IOMMU_INV_T_PASID (1 << 2) + +#define VIRTIO_IOMMU_INVAL_F_PASID (1 << 0) +#define VIRTIO_IOMMU_INVAL_F_ARCHID (1 << 1) +#define VIRTIO_IOMMU_INVAL_F_LEAF (1 << 2) + +struct virtio_iommu_req_invalidate { + struct virtio_iommu_req_head head; + __le16 inv_gran; + __le16 inv_type; + + __le16 flags; + __u8 reserved1[2]; + __le32 domain; + + __le32 pasid; + __u8 reserved2[4]; + + __le64 archid; + __le64 virt_start; + __le64 nr_pages; + + /* Page size, in nr of bits, typically 12 for 4k, 30 for 2MB, etc.) */ + __u8 granule; + __u8 reserved3[11]; + struct virtio_iommu_req_tail tail; +}; + /* Fault types */ #define VIRTIO_IOMMU_FAULT_R_UNKNOWN 0 #define VIRTIO_IOMMU_FAULT_R_DOMAIN 1 -- 2.17.1