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Date:   Tue, 24 Oct 2017 13:40:43 -0500
From:   Gary R Hook <gary.hook@....com>
To:     Brijesh Singh <brijesh.singh@....com>, kvm@...r.kernel.org
Cc:     bp@...en8.de, Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Borislav Petkov <bp@...e.de>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Tom Lendacky <thomas.lendacky@....com>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Part2 PATCH v6 11/38] crypto: ccp: Define SEV key management
 command id

On 10/19/2017 09:33 PM, Brijesh Singh wrote:
> Define Secure Encrypted Virtualization (SEV) key management command id
> and structure. The command definition is available in SEV KM [1] spec
> 0.14.
> 
> [1] http://support.amd.com/TechDocs/55766_SEV-KM API_Specification.pdf
> 
> Cc: Paolo Bonzini <pbonzini@...hat.com>
> Cc: "Radim Krčmář" <rkrcmar@...hat.com>
> Cc: Borislav Petkov <bp@...e.de>
> Cc: Herbert Xu <herbert@...dor.apana.org.au>
> Cc: Gary Hook <gary.hook@....com>
> Cc: Tom Lendacky <thomas.lendacky@....com>
> Cc: linux-crypto@...r.kernel.org
> Cc: kvm@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Improvements-by: Borislav Petkov <bp@...e.de>
> Signed-off-by: Brijesh Singh <brijesh.singh@....com>
> Reviewed-by: Borislav Petkov <bp@...e.de>

Acked-by: Gary R Hook <gary.hook@....com>


> ---
>   include/linux/psp-sev.h | 494 ++++++++++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 494 insertions(+)
>   create mode 100644 include/linux/psp-sev.h
> 
> diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h
> new file mode 100644
> index 000000000000..15bda519538e
> --- /dev/null
> +++ b/include/linux/psp-sev.h
> @@ -0,0 +1,494 @@
> +/*
> + * AMD Secure Encrypted Virtualization (SEV) driver interface
> + *
> + * Copyright (C) 2016-2017 Advanced Micro Devices, Inc.
> + *
> + * Author: Brijesh Singh <brijesh.singh@....com>
> + *
> + * SEV spec 0.14 is available at:
> + * http://support.amd.com/TechDocs/55766_SEV-KM API_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_H__
> +#define __PSP_SEV_H__
> +
> +#include <uapi/linux/psp-sev.h>
> +
> +#ifdef CONFIG_X86
> +#include <linux/mem_encrypt.h>
> +
> +#define __psp_pa(x)	__sme_pa(x)
> +#else
> +#define __psp_pa(x)	__pa(x)
> +#endif
> +
> +#define SEV_FW_BLOB_MAX_SIZE	0x4000	/* 16KB */
> +
> +/**
> + * SEV platform state
> + */
> +enum sev_state {
> +	SEV_STATE_UNINIT		= 0x0,
> +	SEV_STATE_INIT			= 0x1,
> +	SEV_STATE_WORKING		= 0x2,
> +
> +	SEV_STATE_MAX
> +};
> +
> +/**
> + * SEV platform and guest management commands
> + */
> +enum sev_cmd {
> +	/* platform commands */
> +	SEV_CMD_INIT			= 0x001,
> +	SEV_CMD_SHUTDOWN		= 0x002,
> +	SEV_CMD_FACTORY_RESET		= 0x003,
> +	SEV_CMD_PLATFORM_STATUS		= 0x004,
> +	SEV_CMD_PEK_GEN			= 0x005,
> +	SEV_CMD_PEK_CSR			= 0x006,
> +	SEV_CMD_PEK_CERT_IMPORT		= 0x007,
> +	SEV_CMD_PDH_CERT_EXPORT		= 0x008,
> +	SEV_CMD_PDH_GEN			= 0x009,
> +	SEV_CMD_DF_FLUSH		= 0x00A,
> +
> +	/* Guest commands */
> +	SEV_CMD_DECOMMISSION		= 0x020,
> +	SEV_CMD_ACTIVATE		= 0x021,
> +	SEV_CMD_DEACTIVATE		= 0x022,
> +	SEV_CMD_GUEST_STATUS		= 0x023,
> +
> +	/* Guest launch commands */
> +	SEV_CMD_LAUNCH_START		= 0x030,
> +	SEV_CMD_LAUNCH_UPDATE_DATA	= 0x031,
> +	SEV_CMD_LAUNCH_UPDATE_VMSA	= 0x032,
> +	SEV_CMD_LAUNCH_MEASURE		= 0x033,
> +	SEV_CMD_LAUNCH_UPDATE_SECRET	= 0x034,
> +	SEV_CMD_LAUNCH_FINISH		= 0x035,
> +
> +	/* Guest migration commands (outgoing) */
> +	SEV_CMD_SEND_START		= 0x040,
> +	SEV_CMD_SEND_UPDATE_DATA	= 0x041,
> +	SEV_CMD_SEND_UPDATE_VMSA	= 0x042,
> +	SEV_CMD_SEND_FINISH		= 0x043,
> +
> +	/* Guest migration commands (incoming) */
> +	SEV_CMD_RECEIVE_START		= 0x050,
> +	SEV_CMD_RECEIVE_UPDATE_DATA	= 0x051,
> +	SEV_CMD_RECEIVE_UPDATE_VMSA	= 0x052,
> +	SEV_CMD_RECEIVE_FINISH		= 0x053,
> +
> +	/* Guest debug commands */
> +	SEV_CMD_DBG_DECRYPT		= 0x060,
> +	SEV_CMD_DBG_ENCRYPT		= 0x061,
> +
> +	SEV_CMD_MAX,
> +};
> +
> +/**
> + * status code returned by the commands
> + */
> +enum psp_ret_code {
> +	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,
> +};
> +
> +/**
> + * struct sev_data_init - INIT command parameters
> + *
> + * @flags: processing flags
> + * @tmr_address: system physical address used for SEV-ES
> + * @tmr_len: len of tmr_address
> + */
> +struct sev_data_init {
> +	u32 flags;			/* In */
> +	u32 reserved;			/* In */
> +	u64 tmr_address;		/* In */
> +	u32 tmr_len;			/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_pek_csr - PEK_CSR command parameters
> + *
> + * @address: PEK certificate chain
> + * @len: len of certificate
> + */
> +struct sev_data_pek_csr {
> +	u64 address;				/* In */
> +	u32 len;				/* In/Out */
> +} __packed;
> +
> +/**
> + * struct sev_data_cert_import - PEK_CERT_IMPORT command parameters
> + *
> + * @pek_address: PEK certificate chain
> + * @pek_len: len of PEK certificate
> + * @oca_address: OCA certificate chain
> + * @oca_len: len of OCA certificate
> + */
> +struct sev_data_pek_cert_import {
> +	u64 pek_cert_address;			/* In */
> +	u32 pek_cert_len;			/* In */
> +	u32 reserved;				/* In */
> +	u64 oca_cert_address;			/* In */
> +	u32 oca_cert_len;			/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_pdh_cert_export - PDH_CERT_EXPORT command parameters
> + *
> + * @pdh_address: PDH certificate address
> + * @pdh_len: len of PDH certificate
> + * @cert_chain_address: PDH certificate chain
> + * @cert_chain_len: len of PDH certificate chain
> + */
> +struct sev_data_pdh_cert_export {
> +	u64 pdh_cert_address;			/* In */
> +	u32 pdh_cert_len;			/* In/Out */
> +	u32 reserved;				/* In */
> +	u64 cert_chain_address;			/* In */
> +	u32 cert_chain_len;			/* In/Out */
> +} __packed;
> +
> +/**
> + * struct sev_data_decommission - DECOMMISSION command parameters
> + *
> + * @handle: handle of the VM to decommission
> + */
> +struct sev_data_decommission {
> +	u32 handle;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_activate - ACTIVATE command parameters
> + *
> + * @handle: handle of the VM to activate
> + * @asid: asid assigned to the VM
> + */
> +struct sev_data_activate {
> +	u32 handle;				/* In */
> +	u32 asid;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_deactivate - DEACTIVATE command parameters
> + *
> + * @handle: handle of the VM to deactivate
> + */
> +struct sev_data_deactivate {
> +	u32 handle;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_guest_status - SEV GUEST_STATUS command parameters
> + *
> + * @handle: handle of the VM to retrieve status
> + * @policy: policy information for the VM
> + * @asid: current ASID of the VM
> + * @state: current state of the VM
> + */
> +struct sev_data_guest_status {
> +	u32 handle;				/* In */
> +	u32 policy;				/* Out */
> +	u32 asid;				/* Out */
> +	u8 state;				/* Out */
> +} __packed;
> +
> +/**
> + * struct sev_data_launch_start - LAUNCH_START command parameters
> + *
> + * @handle: handle assigned to the VM
> + * @policy: guest launch policy
> + * @dh_cert_address: physical address of DH certificate blob
> + * @dh_cert_len: len of DH certificate blob
> + * @session_address: physical address of session parameters
> + * @session_len: len of session parameters
> + */
> +struct sev_data_launch_start {
> +	u32 handle;				/* In/Out */
> +	u32 policy;				/* In */
> +	u64 dh_cert_address;			/* In */
> +	u32 dh_cert_len;			/* In */
> +	u32 reserved;				/* In */
> +	u64 session_address;			/* In */
> +	u32 session_len;			/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_launch_update_data - LAUNCH_UPDATE_DATA command parameter
> + *
> + * @handle: handle of the VM to update
> + * @len: len of memory to be encrypted
> + * @address: physical address of memory region to encrypt
> + */
> +struct sev_data_launch_update_data {
> +	u32 handle;				/* In */
> +	u32 reserved;
> +	u64 address;				/* In */
> +	u32 len;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_launch_update_vmsa - LAUNCH_UPDATE_VMSA command
> + *
> + * @handle: handle of the VM
> + * @address: physical address of memory region to encrypt
> + * @len: len of memory region to encrypt
> + */
> +struct sev_data_launch_update_vmsa {
> +	u32 handle;				/* In */
> +	u32 reserved;
> +	u64 address;				/* In */
> +	u32 len;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_launch_measure - LAUNCH_MEASURE command parameters
> + *
> + * @handle: handle of the VM to process
> + * @address: physical address containing the measurement blob
> + * @len: len of measurement blob
> + */
> +struct sev_data_launch_measure {
> +	u32 handle;				/* In */
> +	u32 reserved;
> +	u64 address;				/* In */
> +	u32 len;				/* In/Out */
> +} __packed;
> +
> +/**
> + * struct sev_data_launch_secret - LAUNCH_SECRET command parameters
> + *
> + * @handle: handle of the VM to process
> + * @hdr_address: physical address containing the packet header
> + * @hdr_len: len of packet header
> + * @guest_address: system physical address of guest memory region
> + * @guest_len: len of guest_paddr
> + * @trans_address: physical address of transport memory buffer
> + * @trans_len: len of transport memory buffer
> + */
> +struct sev_data_launch_secret {
> +	u32 handle;				/* In */
> +	u32 reserved1;
> +	u64 hdr_address;			/* In */
> +	u32 hdr_len;				/* In */
> +	u32 reserved2;
> +	u64 guest_address;			/* In */
> +	u32 guest_len;				/* In */
> +	u32 reserved3;
> +	u64 trans_address;			/* In */
> +	u32 trans_len;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_launch_finish - LAUNCH_FINISH command parameters
> + *
> + * @handle: handle of the VM to process
> + */
> +struct sev_data_launch_finish {
> +	u32 handle;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_send_start - SEND_START command parameters
> + *
> + * @handle: handle of the VM to process
> + * @policy: policy information for the VM
> + * @pdh_cert_address: physical address containing PDH certificate
> + * @pdh_cert_len: len of PDH certificate
> + * @plat_certs_address: physical address containing platform certificate
> + * @plat_certs_len: len of platform certificate
> + * @amd_certs_address: physical address containing AMD certificate
> + * @amd_certs_len: len of AMD certificate
> + * @session_address: physical address containing Session data
> + * @session_len: len of session data
> + */
> +struct sev_data_send_start {
> +	u32 handle;				/* In */
> +	u32 policy;				/* Out */
> +	u64 pdh_cert_address;			/* In */
> +	u32 pdh_cert_len;			/* In */
> +	u32 reserved1;
> +	u64 plat_cert_address;			/* In */
> +	u32 plat_cert_len;			/* In */
> +	u32 reserved2;
> +	u64 amd_cert_address;			/* In */
> +	u32 amd_cert_len;			/* In */
> +	u32 reserved3;
> +	u64 session_address;			/* In */
> +	u32 session_len;			/* In/Out */
> +} __packed;
> +
> +/**
> + * struct sev_data_send_update - SEND_UPDATE_DATA command
> + *
> + * @handle: handle of the VM to process
> + * @hdr_address: physical address containing packet header
> + * @hdr_len: len of packet header
> + * @guest_address: physical address of guest memory region to send
> + * @guest_len: len of guest memory region to send
> + * @trans_address: physical address of host memory region
> + * @trans_len: len of host memory region
> + */
> +struct sev_data_send_update_data {
> +	u32 handle;				/* In */
> +	u32 reserved1;
> +	u64 hdr_address;			/* In */
> +	u32 hdr_len;				/* In/Out */
> +	u32 reserved2;
> +	u64 guest_address;			/* In */
> +	u32 guest_len;				/* In */
> +	u32 reserved3;
> +	u64 trans_address;			/* In */
> +	u32 trans_len;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_send_update - SEND_UPDATE_VMSA command
> + *
> + * @handle: handle of the VM to process
> + * @hdr_address: physical address containing packet header
> + * @hdr_len: len of packet header
> + * @guest_address: physical address of guest memory region to send
> + * @guest_len: len of guest memory region to send
> + * @trans_address: physical address of host memory region
> + * @trans_len: len of host memory region
> + */
> +struct sev_data_send_update_vmsa {
> +	u32 handle;				/* In */
> +	u64 hdr_address;			/* In */
> +	u32 hdr_len;				/* In/Out */
> +	u32 reserved2;
> +	u64 guest_address;			/* In */
> +	u32 guest_len;				/* In */
> +	u32 reserved3;
> +	u64 trans_address;			/* In */
> +	u32 trans_len;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_send_finish - SEND_FINISH command parameters
> + *
> + * @handle: handle of the VM to process
> + */
> +struct sev_data_send_finish {
> +	u32 handle;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_receive_start - RECEIVE_START command parameters
> + *
> + * @handle: handle of the VM to perform receive operation
> + * @pdh_cert_address: system physical address containing PDH certificate blob
> + * @pdh_cert_len: len of PDH certificate blob
> + * @session_address: system physical address containing session blob
> + * @session_len: len of session blob
> + */
> +struct sev_data_receive_start {
> +	u32 handle;				/* In/Out */
> +	u32 policy;				/* In */
> +	u64 pdh_cert_address;			/* In */
> +	u32 pdh_cert_len;			/* In */
> +	u32 reserved1;
> +	u64 session_address;			/* In */
> +	u32 session_len;			/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_receive_update_data - RECEIVE_UPDATE_DATA command parameters
> + *
> + * @handle: handle of the VM to update
> + * @hdr_address: physical address containing packet header blob
> + * @hdr_len: len of packet header
> + * @guest_address: system physical address of guest memory region
> + * @guest_len: len of guest memory region
> + * @trans_address: system physical address of transport buffer
> + * @trans_len: len of transport buffer
> + */
> +struct sev_data_receive_update_data {
> +	u32 handle;				/* In */
> +	u32 reserved1;
> +	u64 hdr_address;			/* In */
> +	u32 hdr_len;				/* In */
> +	u32 reserved2;
> +	u64 guest_address;			/* In */
> +	u32 guest_len;				/* In */
> +	u32 reserved3;
> +	u64 trans_address;			/* In */
> +	u32 trans_len;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_receive_update_vmsa - RECEIVE_UPDATE_VMSA command parameters
> + *
> + * @handle: handle of the VM to update
> + * @hdr_address: physical address containing packet header blob
> + * @hdr_len: len of packet header
> + * @guest_address: system physical address of guest memory region
> + * @guest_len: len of guest memory region
> + * @trans_address: system physical address of transport buffer
> + * @trans_len: len of transport buffer
> + */
> +struct sev_data_receive_update_vmsa {
> +	u32 handle;				/* In */
> +	u32 reserved1;
> +	u64 hdr_address;			/* In */
> +	u32 hdr_len;				/* In */
> +	u32 reserved2;
> +	u64 guest_address;			/* In */
> +	u32 guest_len;				/* In */
> +	u32 reserved3;
> +	u64 trans_address;			/* In */
> +	u32 trans_len;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_receive_finish - RECEIVE_FINISH command parameters
> + *
> + * @handle: handle of the VM to finish
> + */
> +struct sev_data_receive_finish {
> +	u32 handle;				/* In */
> +} __packed;
> +
> +/**
> + * struct sev_data_dbg - DBG_ENCRYPT/DBG_DECRYPT command parameters
> + *
> + * @handle: handle of the VM to perform debug operation
> + * @src_addr: source address of data to operate on
> + * @dst_addr: destination address of data to operate on
> + * @len: len of data to operate on
> + */
> +struct sev_data_dbg {
> +	u32 handle;				/* In */
> +	u32 reserved;
> +	u64 src_addr;				/* In */
> +	u64 dst_addr;				/* In */
> +	u32 len;				/* In */
> +} __packed;
> +
> +#endif	/* __PSP_SEV_H__ */
> 

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