| /* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */ |
| /* |
| * 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 API specification is available at: https://developer.amd.com/sev/ |
| */ |
| |
| #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_GET_ID, /* This command is deprecated, use SEV_GET_ID2 */ |
| SEV_GET_ID2, |
| |
| SEV_MAX, |
| }; |
| |
| /** |
| * SEV Firmware status code |
| */ |
| typedef enum { |
| /* |
| * This error code is not in the SEV spec. Its purpose is to convey that |
| * there was an error that prevented the SEV firmware from being called. |
| * The SEV API error codes are 16 bits, so the -1 value will not overlap |
| * with possible values from the specification. |
| */ |
| SEV_RET_NO_FW_CALL = -1, |
| 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_INVALID_PARAM, |
| SEV_RET_RESOURCE_LIMIT, |
| SEV_RET_SECURE_DATA_INVALID, |
| 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; |
| |
| #define SEV_STATUS_FLAGS_CONFIG_ES 0x0100 |
| |
| /** |
| * 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_user_data_get_id - GET_ID command parameters (deprecated) |
| * |
| * @socket1: Buffer to pass unique ID of first socket |
| * @socket2: Buffer to pass unique ID of second socket |
| */ |
| struct sev_user_data_get_id { |
| __u8 socket1[64]; /* Out */ |
| __u8 socket2[64]; /* Out */ |
| } __packed; |
| |
| /** |
| * struct sev_user_data_get_id2 - GET_ID command parameters |
| * @address: Buffer to store unique ID |
| * @length: length of the unique ID |
| */ |
| struct sev_user_data_get_id2 { |
| __u64 address; /* In */ |
| __u32 length; /* 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 */ |