crypto: ccp: Define SEV userspace ioctl and command id

/*

 * Userspace interface for AMD Secure Encrypted Virtualization (SEV)

 * platform management commands.

 *

 * Copyright (C) 2016-2017 Advanced Micro Devices, Inc.

 *

 * Author: Brijesh Singh <brijesh.singh@amd.com>

 *

 * SEV spec 0.14 is available at:

 * http://support.amd.com/TechDocs/55766_SEV-KM%20API_Specification.pdf

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

#ifndef __PSP_SEV_USER_H__

#define __PSP_SEV_USER_H__

#include <linux/types.h>

/**

 * SEV platform commands

 */

enum {

	SEV_FACTORY_RESET = 0,

	SEV_PLATFORM_STATUS,

	SEV_PEK_GEN,

	SEV_PEK_CSR,

	SEV_PDH_GEN,

	SEV_PDH_CERT_EXPORT,

	SEV_PEK_CERT_IMPORT,

	SEV_MAX,

};

/**

 * SEV Firmware status code

 */

typedef enum {

	SEV_RET_SUCCESS = 0,

	SEV_RET_INVALID_PLATFORM_STATE,

	SEV_RET_INVALID_GUEST_STATE,

	SEV_RET_INAVLID_CONFIG,

	SEV_RET_INVALID_len,

	SEV_RET_ALREADY_OWNED,

	SEV_RET_INVALID_CERTIFICATE,

	SEV_RET_POLICY_FAILURE,

	SEV_RET_INACTIVE,

	SEV_RET_INVALID_ADDRESS,

	SEV_RET_BAD_SIGNATURE,

	SEV_RET_BAD_MEASUREMENT,

	SEV_RET_ASID_OWNED,

	SEV_RET_INVALID_ASID,

	SEV_RET_WBINVD_REQUIRED,

	SEV_RET_DFFLUSH_REQUIRED,

	SEV_RET_INVALID_GUEST,

	SEV_RET_INVALID_COMMAND,

	SEV_RET_ACTIVE,

	SEV_RET_HWSEV_RET_PLATFORM,

	SEV_RET_HWSEV_RET_UNSAFE,

	SEV_RET_UNSUPPORTED,

	SEV_RET_MAX,

} sev_ret_code;

/**

 * struct sev_user_data_status - PLATFORM_STATUS command parameters

 *

 * @major: major API version

 * @minor: minor API version

 * @state: platform state

 * @flags: platform config flags

 * @build: firmware build id for API version

 * @guest_count: number of active guests

 */

struct sev_user_data_status {

	__u8 api_major;				/* Out */

	__u8 api_minor;				/* Out */

	__u8 state;				/* Out */

	__u32 flags;				/* Out */

	__u8 build;				/* Out */

	__u32 guest_count;			/* Out */

} __packed;

/**

 * struct sev_user_data_pek_csr - PEK_CSR command parameters

 *

 * @address: PEK certificate chain

 * @length: length of certificate

 */

struct sev_user_data_pek_csr {

	__u64 address;				/* In */

	__u32 length;				/* In/Out */

} __packed;

/**

 * struct sev_user_data_cert_import - PEK_CERT_IMPORT command parameters

 *

 * @pek_address: PEK certificate chain

 * @pek_len: length of PEK certificate

 * @oca_address: OCA certificate chain

 * @oca_len: length of OCA certificate

 */

struct sev_user_data_pek_cert_import {

	__u64 pek_cert_address;			/* In */

	__u32 pek_cert_len;			/* In */

	__u64 oca_cert_address;			/* In */

	__u32 oca_cert_len;			/* In */

} __packed;

/**

 * struct sev_user_data_pdh_cert_export - PDH_CERT_EXPORT command parameters

 *

 * @pdh_address: PDH certificate address

 * @pdh_len: length of PDH certificate

 * @cert_chain_address: PDH certificate chain

 * @cert_chain_len: length of PDH certificate chain

 */

struct sev_user_data_pdh_cert_export {

	__u64 pdh_cert_address;			/* In */

	__u32 pdh_cert_len;			/* In/Out */

	__u64 cert_chain_address;		/* In */

	__u32 cert_chain_len;			/* In/Out */

} __packed;

/**

 * struct sev_issue_cmd - SEV ioctl parameters

 *

 * @cmd: SEV commands to execute

 * @opaque: pointer to the command structure

 * @error: SEV FW return code on failure

 */

struct sev_issue_cmd {

	__u32 cmd;				/* In */

	__u64 data;				/* In */

	__u32 error;				/* Out */

} __packed;

#define SEV_IOC_TYPE		'S'

#define SEV_ISSUE_CMD	_IOWR(SEV_IOC_TYPE, 0x0, struct sev_issue_cmd)

#endif /* __PSP_USER_SEV_H */