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Peter Anvin" , Tony Luck , Dave Hansen , "Peter Zijlstra (Intel)" , Paolo Bonzini , Tom Lendacky , David Rientjes , Sean Christopherson Subject: [RFC Part2 PATCH 08/30] crypto:ccp: define the SEV-SNP commands Date: Wed, 24 Mar 2021 12:04:14 -0500 Message-Id: <20210324170436.31843-9-brijesh.singh@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210324170436.31843-1-brijesh.singh@amd.com> References: <20210324170436.31843-1-brijesh.singh@amd.com> Content-Type: text/plain X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: SA0PR11CA0210.namprd11.prod.outlook.com (2603:10b6:806:1bc::35) 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 SA0PR11CA0210.namprd11.prod.outlook.com (2603:10b6:806:1bc::35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3977.25 via Frontend Transport; Wed, 24 Mar 2021 17:04:56 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 68a7efcf-27aa-4da0-f923-08d8eee6f3b0 X-MS-TrafficTypeDiagnostic: SA0PR12MB4557: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6790; 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X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?Imrh3UpJGYMqDpKqaf4ur/Hb93OYMN2eIDHMsxHI6zplsKF1hkQt+QSA4b02?= =?us-ascii?Q?eoUV/7NHMRcAznI7h8xmOSZH5znH7flc1MIHtAZZrWySrrRVo3P4a+S1Z0GH?= =?us-ascii?Q?Y92yrDOTATi+v7eva21Ds1TmKHDOYgwgJC5lgC1zNIh93d0fKnP1905zuqla?= =?us-ascii?Q?XPToQtMinWkOwquV0VuqSy94nJvFlZpSZj6pH08cqH/QEs1xCCi2SJAaXCzf?= =?us-ascii?Q?vdYfuBlG3L6jpkgYtbh73QRFQr+dbmiTLSs3DaHRo39tmwc8SxcLb6VKdBFv?= =?us-ascii?Q?sNeCEcTOoBrHUpJOtOJjGrqr1d0zumojSSS2aBNOo3VZlrOKyOzKEPE/EmUy?= =?us-ascii?Q?QCd5HcdVhZNkyyj9lqULq3S32qraFXdmpNhYqI1YcC2nUg+HSEF7+mv6OUxP?= =?us-ascii?Q?545M1EUIkTwlAtl7x6mdmmmuT/9kNPIEOQGSPeJPWerOJpmO0Is+21i9uxxn?= =?us-ascii?Q?NYvfdinArxAX8DnZMAwdMMOjXM6FL6B71c6FwGItH3dcXxxh+Ldglmb6x4QP?= =?us-ascii?Q?vt9trjV8V82LVoBhafWOZjFhY+zkUXsKqZjviRgmW3UUOWqxujg3AApegD79?= =?us-ascii?Q?hBdXDZU6kmbAOTrwUi7o6Aq3zupXbmBnaU13kbabB0j417CRCw8Vd4FnsLpS?= =?us-ascii?Q?mVCYNMipQ4iStrj5R9jPlpU90Tr7Bh89sIQsWHp87BU89MC4/SUd49BfvxGs?= =?us-ascii?Q?7BRIrlKTw94aDinmgyg3qBZSi4D/JO6uDybdVHJjSy8oPyvvUS7NZoxjDPNq?= =?us-ascii?Q?wk5TfGyWnPRGxx2SfUYNiZzJtXZND8XKGdPBx80/3jVIEP5wQitADi5bkw1B?= =?us-ascii?Q?mAS8qZ1NVL71hGPFUcdAabJU6epHLl7ilqG+zuOf93lUwPDYZ+KAgEbFkwSz?= =?us-ascii?Q?vvFcO9T08i1siKF6ri9rb9omJSsCbrHAGoCyi0ZdfBsva4ov5cSo2nRhHcvU?= =?us-ascii?Q?mOl+frNY8PY2U8Kyvbr1UC1s1rxaLF0N0R8Q3Wgqv2zZ8S06al2HcHMJ9Kbz?= =?us-ascii?Q?vsIrZAmyQTtdxcqJj2i9myCfOQxOL9Y3R3VijXunxF1ka8RV5AIwXRKmXCaS?= =?us-ascii?Q?1VNPm6TV2txZFdfBKfMR5OGQGlt51YJyb8hp9k+t10ZfJiP1bA5iambZfSWL?= =?us-ascii?Q?76ypo30+JjiFDr170mZ9H3KTXGw2TNey1IQNjFNhi/n1OaSjvU4d/ep0kNh5?= =?us-ascii?Q?0XIRUKtxSClo7eaKDoPKkJqJIbTqCoV6V3Z/8L2dHWqqQBrPZvKkc15GaeGe?= =?us-ascii?Q?Ko9E5zMnK+idwaG0k1GCRNhKDvJBwGNVUPkL4McTC0iLhkZ87BPOY9z/sPUM?= =?us-ascii?Q?KpflD6OddaQ1IK/ujfXZwKdO?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 68a7efcf-27aa-4da0-f923-08d8eee6f3b0 X-MS-Exchange-CrossTenant-AuthSource: SN6PR12MB2718.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Mar 2021 17:04:57.2534 (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: I9iP4Gjx02ztRFm+kp/9I2WjhhWfBE69b/dCA+1IFZ5NWm2sZcFV6H7VJnTHDWnwL/j/cw6gbnlUGiHZq43WHQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR12MB4557 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@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. Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Joerg Roedel Cc: "H. Peter Anvin" Cc: Tony Luck Cc: Dave Hansen Cc: "Peter Zijlstra (Intel)" Cc: Paolo Bonzini Cc: Tom Lendacky Cc: David Rientjes Cc: Sean Christopherson Cc: x86@kernel.org Cc: kvm@vger.kernel.org Signed-off-by: Brijesh Singh --- drivers/crypto/ccp/sev-dev.c | 11 ++ include/linux/psp-sev.h | 210 +++++++++++++++++++++++++++++++++++ include/uapi/linux/psp-sev.h | 27 +++++ 3 files changed, 248 insertions(+) diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c index 476113e12489..8a9fd843ad9e 100644 --- a/drivers/crypto/ccp/sev-dev.c +++ b/drivers/crypto/ccp/sev-dev.c @@ -128,6 +128,17 @@ static int sev_cmd_buffer_len(int cmd) case SEV_CMD_LAUNCH_UPDATE_SECRET: return sizeof(struct sev_data_launch_secret); 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_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_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); default: return 0; } diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h index 49d155cd2dfe..df89f0207099 100644 --- a/include/linux/psp-sev.h +++ b/include/linux/psp-sev.h @@ -83,6 +83,34 @@ 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_DOWNLOAD_FIRMWARE = 0x85, + SEV_CMD_SNP_GET_ID = 0x86, + 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_ENCRYT = 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_MAX, }; @@ -483,6 +511,188 @@ struct sev_data_dbg { u32 len; /* In */ } __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; +} __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; + #ifdef CONFIG_CRYPTO_DEV_SP_PSP /** diff --git a/include/uapi/linux/psp-sev.h b/include/uapi/linux/psp-sev.h index 91b4c63d5cbf..9bc63b026091 100644 --- a/include/uapi/linux/psp-sev.h +++ b/include/uapi/linux/psp-sev.h @@ -61,6 +61,11 @@ 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_MAX, } sev_ret_code; @@ -147,6 +152,28 @@ struct sev_user_data_get_id2 { __u32 length; /* In/Out */ } __packed; +/** + * struct sev_data_snp_platform_status - Platform 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_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_issue_cmd - SEV ioctl parameters * -- 2.17.1