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Peter Anvin" , Ard Biesheuvel , Paolo Bonzini , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Andy Lutomirski , Dave Hansen , Sergio Lopez , Peter Gonda , Peter Zijlstra , Srinivas Pandruvada , David Rientjes , Dov Murik , Tobin Feldman-Fitzthum , Borislav Petkov , Michael Roth , Vlastimil Babka , "Kirill A . Shutemov" , Andi Kleen , tony.luck@intel.com, marcorr@google.com, sathyanarayanan.kuppuswamy@linux.intel.com, Brijesh Singh Subject: [PATCH Part2 v5 11/45] crypto:ccp: Define the SEV-SNP commands Date: Fri, 20 Aug 2021 10:58:44 -0500 Message-Id: <20210820155918.7518-12-brijesh.singh@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210820155918.7518-1-brijesh.singh@amd.com> References: <20210820155918.7518-1-brijesh.singh@amd.com> X-ClientProxiedBy: SN7P222CA0013.NAMP222.PROD.OUTLOOK.COM (2603:10b6:806:124::11) To SN6PR12MB2718.namprd12.prod.outlook.com (2603:10b6:805:6f::22) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from sbrijesh-desktop.amd.com (165.204.77.1) by SN7P222CA0013.NAMP222.PROD.OUTLOOK.COM (2603:10b6:806:124::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4436.18 via Frontend Transport; Fri, 20 Aug 2021 16:00:06 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 482d3a8a-2ea6-47fb-b75c-08d963f394fd X-MS-TrafficTypeDiagnostic: SA0PR12MB4384: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:7219; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SN6PR12MB2718.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(376002)(39860400002)(396003)(366004)(346002)(136003)(5660300002)(6666004)(52116002)(66946007)(44832011)(36756003)(7416002)(66476007)(7406005)(6486002)(956004)(8936002)(316002)(2906002)(186003)(4326008)(478600001)(86362001)(26005)(54906003)(38100700002)(38350700002)(7696005)(1076003)(8676002)(83380400001)(2616005)(30864003)(66556008);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 482d3a8a-2ea6-47fb-b75c-08d963f394fd X-MS-Exchange-CrossTenant-AuthSource: SN6PR12MB2718.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Aug 2021 16:00:07.9133 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Gbyst2Zn1fI3H2Z0o4eEV5rdJkvtpYXelwL/XZQ6hLWu+kP7u5wjLA82w1zp7zcYfZ5TVRop4WmUZdUCn91bow== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR12MB4384 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org AMD introduced the next generation of SEV called SEV-SNP (Secure Nested Paging). SEV-SNP builds upon existing SEV and SEV-ES functionality while adding new hardware security protection. Define the commands and structures used to communicate with the AMD-SP when creating and managing the SEV-SNP guests. The SEV-SNP firmware spec is available at developer.amd.com/sev. Signed-off-by: Brijesh Singh --- drivers/crypto/ccp/sev-dev.c | 16 ++- include/linux/psp-sev.h | 222 +++++++++++++++++++++++++++++++++++ include/uapi/linux/psp-sev.h | 42 +++++++ 3 files changed, 279 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 2ecb0e1f65d8..f5dbadba82ff 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -134,7 +134,21 @@ static int sev_cmd_buffer_len(int cmd) case SEV_CMD_DOWNLOAD_FIRMWARE: return sizeof(struct sev_data_download_firmware); case SEV_CMD_GET_ID: return sizeof(struct sev_data_get_id); case SEV_CMD_ATTESTATION_REPORT: return sizeof(struct sev_data_attestation_report); - case SEV_CMD_SEND_CANCEL: return sizeof(struct sev_data_send_cancel); + case SEV_CMD_SEND_CANCEL: return sizeof(struct sev_data_send_cancel); + case SEV_CMD_SNP_GCTX_CREATE: return sizeof(struct sev_data_snp_gctx_create); + case SEV_CMD_SNP_LAUNCH_START: return sizeof(struct sev_data_snp_launch_start); + case SEV_CMD_SNP_LAUNCH_UPDATE: return sizeof(struct sev_data_snp_launch_update); + case SEV_CMD_SNP_ACTIVATE: return sizeof(struct sev_data_snp_activate); + case SEV_CMD_SNP_DECOMMISSION: return sizeof(struct sev_data_snp_decommission); + case SEV_CMD_SNP_PAGE_RECLAIM: return sizeof(struct sev_data_snp_page_reclaim); + case SEV_CMD_SNP_GUEST_STATUS: return sizeof(struct sev_data_snp_guest_status); + case SEV_CMD_SNP_LAUNCH_FINISH: return sizeof(struct sev_data_snp_launch_finish); + case SEV_CMD_SNP_DBG_DECRYPT: return sizeof(struct sev_data_snp_dbg); + case SEV_CMD_SNP_DBG_ENCRYPT: return sizeof(struct sev_data_snp_dbg); + case SEV_CMD_SNP_PAGE_UNSMASH: return sizeof(struct sev_data_snp_page_unsmash); + case SEV_CMD_SNP_PLATFORM_STATUS: return sizeof(struct sev_data_snp_platform_status_buf); + case SEV_CMD_SNP_GUEST_REQUEST: return sizeof(struct sev_data_snp_guest_request); + case SEV_CMD_SNP_CONFIG: return sizeof(struct sev_user_data_snp_config); default: return 0; } diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h index d48a7192e881..c3755099ab55 100644 --- a/include/linux/psp-sev.h +++ b/include/linux/psp-sev.h @@ -85,6 +85,34 @@ enum sev_cmd { SEV_CMD_DBG_DECRYPT = 0x060, SEV_CMD_DBG_ENCRYPT = 0x061, + /* SNP specific commands */ + SEV_CMD_SNP_INIT = 0x81, + SEV_CMD_SNP_SHUTDOWN = 0x82, + SEV_CMD_SNP_PLATFORM_STATUS = 0x83, + SEV_CMD_SNP_DF_FLUSH = 0x84, + SEV_CMD_SNP_INIT_EX = 0x85, + SEV_CMD_SNP_DECOMMISSION = 0x90, + SEV_CMD_SNP_ACTIVATE = 0x91, + SEV_CMD_SNP_GUEST_STATUS = 0x92, + SEV_CMD_SNP_GCTX_CREATE = 0x93, + SEV_CMD_SNP_GUEST_REQUEST = 0x94, + SEV_CMD_SNP_ACTIVATE_EX = 0x95, + SEV_CMD_SNP_LAUNCH_START = 0xA0, + SEV_CMD_SNP_LAUNCH_UPDATE = 0xA1, + SEV_CMD_SNP_LAUNCH_FINISH = 0xA2, + SEV_CMD_SNP_DBG_DECRYPT = 0xB0, + SEV_CMD_SNP_DBG_ENCRYPT = 0xB1, + SEV_CMD_SNP_PAGE_SWAP_OUT = 0xC0, + SEV_CMD_SNP_PAGE_SWAP_IN = 0xC1, + SEV_CMD_SNP_PAGE_MOVE = 0xC2, + SEV_CMD_SNP_PAGE_MD_INIT = 0xC3, + SEV_CMD_SNP_PAGE_MD_RECLAIM = 0xC4, + SEV_CMD_SNP_PAGE_RO_RECLAIM = 0xC5, + SEV_CMD_SNP_PAGE_RO_RESTORE = 0xC6, + SEV_CMD_SNP_PAGE_RECLAIM = 0xC7, + SEV_CMD_SNP_PAGE_UNSMASH = 0xC8, + SEV_CMD_SNP_CONFIG = 0xC9, + SEV_CMD_MAX, }; @@ -510,6 +538,200 @@ struct sev_data_attestation_report { u32 len; /* In/Out */ } __packed; +/** + * struct sev_data_snp_platform_status_buf - SNP_PLATFORM_STATUS command params + * + * @address: physical address where the status should be copied + */ +struct sev_data_snp_platform_status_buf { + u64 status_paddr; /* In */ +} __packed; + +/** + * struct sev_data_snp_download_firmware - SNP_DOWNLOAD_FIRMWARE command params + * + * @address: physical address of firmware image + * @len: len of the firmware image + */ +struct sev_data_snp_download_firmware { + u64 address; /* In */ + u32 len; /* In */ +} __packed; + +/** + * struct sev_data_snp_gctx_create - SNP_GCTX_CREATE command params + * + * @gctx_paddr: system physical address of the page donated to firmware by + * the hypervisor to contain the guest context. + */ +struct sev_data_snp_gctx_create { + u64 gctx_paddr; /* In */ +} __packed; + +/** + * struct sev_data_snp_activate - SNP_ACTIVATE command params + * + * @gctx_paddr: system physical address guest context page + * @asid: ASID to bind to the guest + */ +struct sev_data_snp_activate { + u64 gctx_paddr; /* In */ + u32 asid; /* In */ +} __packed; + +/** + * struct sev_data_snp_decommission - SNP_DECOMMISSION command params + * + * @address: system physical address guest context page + */ +struct sev_data_snp_decommission { + u64 gctx_paddr; /* In */ +} __packed; + +/** + * struct sev_data_snp_launch_start - SNP_LAUNCH_START command params + * + * @gctx_addr: system physical address of guest context page + * @policy: guest policy + * @ma_gctx_addr: system physical address of migration agent + * @imi_en: launch flow is launching an IMI for the purpose of + * guest-assisted migration. + * @ma_en: the guest is associated with a migration agent + */ +struct sev_data_snp_launch_start { + u64 gctx_paddr; /* In */ + u64 policy; /* In */ + u64 ma_gctx_paddr; /* In */ + u32 ma_en:1; /* In */ + u32 imi_en:1; /* In */ + u32 rsvd:30; + u8 gosvw[16]; /* In */ +} __packed; + +/* SNP support page type */ +enum { + SNP_PAGE_TYPE_NORMAL = 0x1, + SNP_PAGE_TYPE_VMSA = 0x2, + SNP_PAGE_TYPE_ZERO = 0x3, + SNP_PAGE_TYPE_UNMEASURED = 0x4, + SNP_PAGE_TYPE_SECRET = 0x5, + SNP_PAGE_TYPE_CPUID = 0x6, + + SNP_PAGE_TYPE_MAX +}; + +/** + * struct sev_data_snp_launch_update - SNP_LAUNCH_UPDATE command params + * + * @gctx_addr: system physical address of guest context page + * @imi_page: indicates that this page is part of the IMI of the guest + * @page_type: encoded page type + * @page_size: page size 0 indicates 4K and 1 indicates 2MB page + * @address: system physical address of destination page to encrypt + * @vmpl3_perms: VMPL permission mask for VMPL3 + * @vmpl2_perms: VMPL permission mask for VMPL2 + * @vmpl1_perms: VMPL permission mask for VMPL1 + */ +struct sev_data_snp_launch_update { + u64 gctx_paddr; /* In */ + u32 page_size:1; /* In */ + u32 page_type:3; /* In */ + u32 imi_page:1; /* In */ + u32 rsvd:27; + u32 rsvd2; + u64 address; /* In */ + u32 rsvd3:8; + u32 vmpl3_perms:8; /* In */ + u32 vmpl2_perms:8; /* In */ + u32 vmpl1_perms:8; /* In */ + u32 rsvd4; +} __packed; + +/** + * struct sev_data_snp_launch_finish - SNP_LAUNCH_FINISH command params + * + * @gctx_addr: system pphysical address of guest context page + */ +struct sev_data_snp_launch_finish { + u64 gctx_paddr; + u64 id_block_paddr; + u64 id_auth_paddr; + u8 id_block_en:1; + u8 auth_key_en:1; + u64 rsvd:62; + u8 host_data[32]; +} __packed; + +/** + * struct sev_data_snp_guest_status - SNP_GUEST_STATUS command params + * + * @gctx_paddr: system physical address of guest context page + * @address: system physical address of guest status page + */ +struct sev_data_snp_guest_status { + u64 gctx_paddr; + u64 address; +} __packed; + +/** + * struct sev_data_snp_page_reclaim - SNP_PAGE_RECLAIM command params + * + * @paddr: system physical address of page to be claimed. The BIT0 indicate + * the page size. 0h indicates 4 kB and 1h indicates 2 MB page. + */ +struct sev_data_snp_page_reclaim { + u64 paddr; +} __packed; + +/** + * struct sev_data_snp_page_unsmash - SNP_PAGE_UNMASH command params + * + * @paddr: system physical address of page to be unmashed. The BIT0 indicate + * the page size. 0h indicates 4 kB and 1h indicates 2 MB page. + */ +struct sev_data_snp_page_unsmash { + u64 paddr; +} __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_snp_dbg { + u64 gctx_paddr; /* In */ + u64 src_addr; /* In */ + u64 dst_addr; /* In */ + u32 len; /* In */ +} __packed; + +/** + * struct sev_snp_guest_request - SNP_GUEST_REQUEST command params + * + * @gctx_paddr: system physical address of guest context page + * @req_paddr: system physical address of request page + * @res_paddr: system physical address of response page + */ +struct sev_data_snp_guest_request { + u64 gctx_paddr; /* In */ + u64 req_paddr; /* In */ + u64 res_paddr; /* In */ +} __packed; + +/** + * struuct sev_data_snp_init - SNP_INIT_EX structure + * + * @init_rmp: indicate that the RMP should be initialized. + */ +struct sev_data_snp_init_ex { + u32 init_rmp:1; + u32 rsvd:31; + u8 rsvd1[60]; +} __packed; + #ifdef CONFIG_CRYPTO_DEV_SP_PSP /** diff --git a/include/uapi/linux/psp-sev.h b/include/uapi/linux/psp-sev.h index 91b4c63d5cbf..bed65a891223 100644 --- a/include/uapi/linux/psp-sev.h +++ b/include/uapi/linux/psp-sev.h @@ -61,6 +61,13 @@ typedef enum { SEV_RET_INVALID_PARAM, SEV_RET_RESOURCE_LIMIT, SEV_RET_SECURE_DATA_INVALID, + SEV_RET_INVALID_PAGE_SIZE, + SEV_RET_INVALID_PAGE_STATE, + SEV_RET_INVALID_MDATA_ENTRY, + SEV_RET_INVALID_PAGE_OWNER, + SEV_RET_INVALID_PAGE_AEAD_OFLOW, + SEV_RET_RMP_INIT_REQUIRED, + SEV_RET_MAX, } sev_ret_code; @@ -147,6 +154,41 @@ struct sev_user_data_get_id2 { __u32 length; /* In/Out */ } __packed; +/** + * struct sev_user_data_snp_status - SNP status + * + * @major: API major version + * @minor: API minor version + * @state: current platform state + * @build: firmware build id for the API version + * @guest_count: the number of guest currently managed by the firmware + * @tcb_version: current TCB version + */ +struct sev_user_data_snp_status { + __u8 api_major; /* Out */ + __u8 api_minor; /* Out */ + __u8 state; /* Out */ + __u8 rsvd; + __u32 build_id; /* Out */ + __u32 rsvd1; + __u32 guest_count; /* Out */ + __u64 tcb_version; /* Out */ + __u64 rsvd2; +} __packed; + +/* + * struct sev_user_data_snp_config - system wide configuration value for SNP. + * + * @reported_tcb: The TCB version to report in the guest attestation report. + * @mask_chip_id: Indicates that the CHID_ID field in the attestation report + * will always be zero. + */ +struct sev_user_data_snp_config { + __u64 reported_tcb; /* In */ + __u32 mask_chip_id; /* In */ + __u8 rsvd[52]; +} __packed; + /** * struct sev_issue_cmd - SEV ioctl parameters *