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Edit File : virtio_iommu.h \| Size : 3.69 KB
/* SPDX-License-Identifier: BSD-3-Clause / / * Virtio-iommu definition v0.12 * * Copyright (C) 2019 Arm Ltd. / #ifndef _LINUX_VIRTIO_IOMMU_H #define _LINUX_VIRTIO_IOMMU_H #include <linux/types.h> / Feature bits / #define VIRTIO_IOMMU_F_INPUT_RANGE 0 #define VIRTIO_IOMMU_F_DOMAIN_RANGE 1 #define VIRTIO_IOMMU_F_MAP_UNMAP 2 #define VIRTIO_IOMMU_F_BYPASS 3 #define VIRTIO_IOMMU_F_PROBE 4 #define VIRTIO_IOMMU_F_MMIO 5 struct virtio_iommu_range_64 { __le64 start; __le64 end; }; struct virtio_iommu_range_32 { __le32 start; __le32 end; }; struct virtio_iommu_config { / Supported page sizes / __le64 page_size_mask; / Supported IOVA range / struct virtio_iommu_range_64 input_range; / Max domain ID size / struct virtio_iommu_range_32 domain_range; / Probe buffer size / __le32 probe_size; }; / Request types / #define VIRTIO_IOMMU_T_ATTACH 0x01 #define VIRTIO_IOMMU_T_DETACH 0x02 #define VIRTIO_IOMMU_T_MAP 0x03 #define VIRTIO_IOMMU_T_UNMAP 0x04 #define VIRTIO_IOMMU_T_PROBE 0x05 / Status types / #define VIRTIO_IOMMU_S_OK 0x00 #define VIRTIO_IOMMU_S_IOERR 0x01 #define VIRTIO_IOMMU_S_UNSUPP 0x02 #define VIRTIO_IOMMU_S_DEVERR 0x03 #define VIRTIO_IOMMU_S_INVAL 0x04 #define VIRTIO_IOMMU_S_RANGE 0x05 #define VIRTIO_IOMMU_S_NOENT 0x06 #define VIRTIO_IOMMU_S_FAULT 0x07 #define VIRTIO_IOMMU_S_NOMEM 0x08 struct virtio_iommu_req_head { __u8 type; __u8 reserved[3]; }; struct virtio_iommu_req_tail { __u8 status; __u8 reserved[3]; }; struct virtio_iommu_req_attach { struct virtio_iommu_req_head head; __le32 domain; __le32 endpoint; __u8 reserved[8]; struct virtio_iommu_req_tail tail; }; struct virtio_iommu_req_detach { struct virtio_iommu_req_head head; __le32 domain; __le32 endpoint; __u8 reserved[8]; 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) #define VIRTIO_IOMMU_MAP_F_MASK (VIRTIO_IOMMU_MAP_F_READ \| \ VIRTIO_IOMMU_MAP_F_WRITE \| \ VIRTIO_IOMMU_MAP_F_MMIO) struct virtio_iommu_req_map { struct virtio_iommu_req_head head; __le32 domain; __le64 virt_start; __le64 virt_end; __le64 phys_start; __le32 flags; struct virtio_iommu_req_tail tail; }; struct virtio_iommu_req_unmap { struct virtio_iommu_req_head head; __le32 domain; __le64 virt_start; __le64 virt_end; __u8 reserved[4]; struct virtio_iommu_req_tail tail; }; #define VIRTIO_IOMMU_PROBE_T_NONE 0 #define VIRTIO_IOMMU_PROBE_T_RESV_MEM 1 #define VIRTIO_IOMMU_PROBE_T_MASK 0xfff struct virtio_iommu_probe_property { __le16 type; __le16 length; }; #define VIRTIO_IOMMU_RESV_MEM_T_RESERVED 0 #define VIRTIO_IOMMU_RESV_MEM_T_MSI 1 struct virtio_iommu_probe_resv_mem { struct virtio_iommu_probe_property head; __u8 subtype; __u8 reserved[3]; __le64 start; __le64 end; }; struct virtio_iommu_req_probe { struct virtio_iommu_req_head head; __le32 endpoint; __u8 reserved[64]; __u8 properties[]; / * Tail follows the variable-length properties array. No padding, * property lengths are all aligned on 8 bytes. / }; / Fault types */ #define VIRTIO_IOMMU_FAULT_R_UNKNOWN 0 #define VIRTIO_IOMMU_FAULT_R_DOMAIN 1 #define VIRTIO_IOMMU_FAULT_R_MAPPING 2 #define VIRTIO_IOMMU_FAULT_F_READ (1 << 0) #define VIRTIO_IOMMU_FAULT_F_WRITE (1 << 1) #define VIRTIO_IOMMU_FAULT_F_EXEC (1 << 2) #define VIRTIO_IOMMU_FAULT_F_ADDRESS (1 << 8) struct virtio_iommu_fault { __u8 reason; __u8 reserved[3]; __le32 flags; __le32 endpoint; __u8 reserved2[4]; __le64 address; }; #endif Back

Edit File : virtio_iommu.h | Size : 3.69 KB

/* SPDX-License-Identifier: BSD-3-Clause */
/*
 * Virtio-iommu definition v0.12
 *
 * Copyright (C) 2019 Arm Ltd.
 */
#ifndef _LINUX_VIRTIO_IOMMU_H
#define _LINUX_VIRTIO_IOMMU_H

#include <linux/types.h>

/* Feature bits */
#define VIRTIO_IOMMU_F_INPUT_RANGE		0
#define VIRTIO_IOMMU_F_DOMAIN_RANGE		1
#define VIRTIO_IOMMU_F_MAP_UNMAP		2
#define VIRTIO_IOMMU_F_BYPASS			3
#define VIRTIO_IOMMU_F_PROBE			4
#define VIRTIO_IOMMU_F_MMIO			5

struct virtio_iommu_range_64 {
	__le64					start;
	__le64					end;
};

struct virtio_iommu_range_32 {
	__le32					start;
	__le32					end;
};

struct virtio_iommu_config {
	/* Supported page sizes */
	__le64					page_size_mask;
	/* Supported IOVA range */
	struct virtio_iommu_range_64		input_range;
	/* Max domain ID size */
	struct virtio_iommu_range_32		domain_range;
	/* Probe buffer size */
	__le32					probe_size;
};

/* Request types */
#define VIRTIO_IOMMU_T_ATTACH			0x01
#define VIRTIO_IOMMU_T_DETACH			0x02
#define VIRTIO_IOMMU_T_MAP			0x03
#define VIRTIO_IOMMU_T_UNMAP			0x04
#define VIRTIO_IOMMU_T_PROBE			0x05

/* Status types */
#define VIRTIO_IOMMU_S_OK			0x00
#define VIRTIO_IOMMU_S_IOERR			0x01
#define VIRTIO_IOMMU_S_UNSUPP			0x02
#define VIRTIO_IOMMU_S_DEVERR			0x03
#define VIRTIO_IOMMU_S_INVAL			0x04
#define VIRTIO_IOMMU_S_RANGE			0x05
#define VIRTIO_IOMMU_S_NOENT			0x06
#define VIRTIO_IOMMU_S_FAULT			0x07
#define VIRTIO_IOMMU_S_NOMEM			0x08

struct virtio_iommu_req_head {
	__u8					type;
	__u8					reserved[3];
};

struct virtio_iommu_req_tail {
	__u8					status;
	__u8					reserved[3];
};

struct virtio_iommu_req_attach {
	struct virtio_iommu_req_head		head;
	__le32					domain;
	__le32					endpoint;
	__u8					reserved[8];
	struct virtio_iommu_req_tail		tail;
};

struct virtio_iommu_req_detach {
	struct virtio_iommu_req_head		head;
	__le32					domain;
	__le32					endpoint;
	__u8					reserved[8];
	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)

#define VIRTIO_IOMMU_MAP_F_MASK			(VIRTIO_IOMMU_MAP_F_READ |	\
						 VIRTIO_IOMMU_MAP_F_WRITE |	\
						 VIRTIO_IOMMU_MAP_F_MMIO)

struct virtio_iommu_req_map {
	struct virtio_iommu_req_head		head;
	__le32					domain;
	__le64					virt_start;
	__le64					virt_end;
	__le64					phys_start;
	__le32					flags;
	struct virtio_iommu_req_tail		tail;
};

struct virtio_iommu_req_unmap {
	struct virtio_iommu_req_head		head;
	__le32					domain;
	__le64					virt_start;
	__le64					virt_end;
	__u8					reserved[4];
	struct virtio_iommu_req_tail		tail;
};

#define VIRTIO_IOMMU_PROBE_T_NONE		0
#define VIRTIO_IOMMU_PROBE_T_RESV_MEM		1

#define VIRTIO_IOMMU_PROBE_T_MASK		0xfff

struct virtio_iommu_probe_property {
	__le16					type;
	__le16					length;
};

#define VIRTIO_IOMMU_RESV_MEM_T_RESERVED	0
#define VIRTIO_IOMMU_RESV_MEM_T_MSI		1

struct virtio_iommu_probe_resv_mem {
	struct virtio_iommu_probe_property	head;
	__u8					subtype;
	__u8					reserved[3];
	__le64					start;
	__le64					end;
};

struct virtio_iommu_req_probe {
	struct virtio_iommu_req_head		head;
	__le32					endpoint;
	__u8					reserved[64];

__u8					properties[];

/*
	 * Tail follows the variable-length properties array. No padding,
	 * property lengths are all aligned on 8 bytes.
	 */
};

/* Fault types */
#define VIRTIO_IOMMU_FAULT_R_UNKNOWN		0
#define VIRTIO_IOMMU_FAULT_R_DOMAIN		1
#define VIRTIO_IOMMU_FAULT_R_MAPPING		2

#define VIRTIO_IOMMU_FAULT_F_READ		(1 << 0)
#define VIRTIO_IOMMU_FAULT_F_WRITE		(1 << 1)
#define VIRTIO_IOMMU_FAULT_F_EXEC		(1 << 2)
#define VIRTIO_IOMMU_FAULT_F_ADDRESS		(1 << 8)

struct virtio_iommu_fault {
	__u8					reason;
	__u8					reserved[3];
	__le32					flags;
	__le32					endpoint;
	__u8					reserved2[4];
	__le64					address;
};

#endif

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