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165 lines
3.7 KiB
165 lines
3.7 KiB
/* SPDX-License-Identifier: BSD-3-Clause */ |
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/* |
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* Virtio-iommu definition v0.12 |
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* |
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* Copyright (C) 2019 Arm Ltd. |
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*/ |
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#ifndef _UAPI_LINUX_VIRTIO_IOMMU_H |
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#define _UAPI_LINUX_VIRTIO_IOMMU_H |
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#include <linux/types.h> |
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/* Feature bits */ |
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#define VIRTIO_IOMMU_F_INPUT_RANGE 0 |
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#define VIRTIO_IOMMU_F_DOMAIN_RANGE 1 |
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#define VIRTIO_IOMMU_F_MAP_UNMAP 2 |
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#define VIRTIO_IOMMU_F_BYPASS 3 |
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#define VIRTIO_IOMMU_F_PROBE 4 |
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#define VIRTIO_IOMMU_F_MMIO 5 |
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struct virtio_iommu_range_64 { |
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__le64 start; |
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__le64 end; |
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}; |
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struct virtio_iommu_range_32 { |
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__le32 start; |
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__le32 end; |
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}; |
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struct virtio_iommu_config { |
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/* Supported page sizes */ |
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__le64 page_size_mask; |
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/* Supported IOVA range */ |
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struct virtio_iommu_range_64 input_range; |
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/* Max domain ID size */ |
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struct virtio_iommu_range_32 domain_range; |
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/* Probe buffer size */ |
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__le32 probe_size; |
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}; |
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/* Request types */ |
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#define VIRTIO_IOMMU_T_ATTACH 0x01 |
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#define VIRTIO_IOMMU_T_DETACH 0x02 |
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#define VIRTIO_IOMMU_T_MAP 0x03 |
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#define VIRTIO_IOMMU_T_UNMAP 0x04 |
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#define VIRTIO_IOMMU_T_PROBE 0x05 |
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/* Status types */ |
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#define VIRTIO_IOMMU_S_OK 0x00 |
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#define VIRTIO_IOMMU_S_IOERR 0x01 |
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#define VIRTIO_IOMMU_S_UNSUPP 0x02 |
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#define VIRTIO_IOMMU_S_DEVERR 0x03 |
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#define VIRTIO_IOMMU_S_INVAL 0x04 |
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#define VIRTIO_IOMMU_S_RANGE 0x05 |
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#define VIRTIO_IOMMU_S_NOENT 0x06 |
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#define VIRTIO_IOMMU_S_FAULT 0x07 |
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#define VIRTIO_IOMMU_S_NOMEM 0x08 |
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struct virtio_iommu_req_head { |
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__u8 type; |
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__u8 reserved[3]; |
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}; |
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struct virtio_iommu_req_tail { |
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__u8 status; |
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__u8 reserved[3]; |
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}; |
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struct virtio_iommu_req_attach { |
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struct virtio_iommu_req_head head; |
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__le32 domain; |
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__le32 endpoint; |
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__u8 reserved[8]; |
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struct virtio_iommu_req_tail tail; |
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}; |
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struct virtio_iommu_req_detach { |
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struct virtio_iommu_req_head head; |
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__le32 domain; |
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__le32 endpoint; |
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__u8 reserved[8]; |
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struct virtio_iommu_req_tail tail; |
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}; |
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#define VIRTIO_IOMMU_MAP_F_READ (1 << 0) |
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#define VIRTIO_IOMMU_MAP_F_WRITE (1 << 1) |
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#define VIRTIO_IOMMU_MAP_F_MMIO (1 << 2) |
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#define VIRTIO_IOMMU_MAP_F_MASK (VIRTIO_IOMMU_MAP_F_READ | \ |
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VIRTIO_IOMMU_MAP_F_WRITE | \ |
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VIRTIO_IOMMU_MAP_F_MMIO) |
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struct virtio_iommu_req_map { |
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struct virtio_iommu_req_head head; |
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__le32 domain; |
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__le64 virt_start; |
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__le64 virt_end; |
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__le64 phys_start; |
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__le32 flags; |
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struct virtio_iommu_req_tail tail; |
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}; |
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struct virtio_iommu_req_unmap { |
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struct virtio_iommu_req_head head; |
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__le32 domain; |
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__le64 virt_start; |
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__le64 virt_end; |
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__u8 reserved[4]; |
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struct virtio_iommu_req_tail tail; |
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}; |
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#define VIRTIO_IOMMU_PROBE_T_NONE 0 |
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#define VIRTIO_IOMMU_PROBE_T_RESV_MEM 1 |
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#define VIRTIO_IOMMU_PROBE_T_MASK 0xfff |
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struct virtio_iommu_probe_property { |
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__le16 type; |
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__le16 length; |
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}; |
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#define VIRTIO_IOMMU_RESV_MEM_T_RESERVED 0 |
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#define VIRTIO_IOMMU_RESV_MEM_T_MSI 1 |
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struct virtio_iommu_probe_resv_mem { |
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struct virtio_iommu_probe_property head; |
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__u8 subtype; |
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__u8 reserved[3]; |
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__le64 start; |
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__le64 end; |
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}; |
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struct virtio_iommu_req_probe { |
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struct virtio_iommu_req_head head; |
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__le32 endpoint; |
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__u8 reserved[64]; |
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__u8 properties[]; |
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/* |
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* Tail follows the variable-length properties array. No padding, |
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* property lengths are all aligned on 8 bytes. |
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*/ |
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}; |
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/* Fault types */ |
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#define VIRTIO_IOMMU_FAULT_R_UNKNOWN 0 |
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#define VIRTIO_IOMMU_FAULT_R_DOMAIN 1 |
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#define VIRTIO_IOMMU_FAULT_R_MAPPING 2 |
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#define VIRTIO_IOMMU_FAULT_F_READ (1 << 0) |
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#define VIRTIO_IOMMU_FAULT_F_WRITE (1 << 1) |
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#define VIRTIO_IOMMU_FAULT_F_EXEC (1 << 2) |
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#define VIRTIO_IOMMU_FAULT_F_ADDRESS (1 << 8) |
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struct virtio_iommu_fault { |
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__u8 reason; |
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__u8 reserved[3]; |
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__le32 flags; |
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__le32 endpoint; |
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__u8 reserved2[4]; |
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__le64 address; |
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}; |
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#endif
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