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/* $OpenBSD: ccpvar.h,v 1.3 2024/06/13 17:59:08 bluhm Exp $ */
/*
* Copyright (c) 2018 David Gwynne <dlg@openbsd.org>
* Copyright (c) 2023, 2024 Hans-Joerg Hoexer <hshoexer@genua.de>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/timeout.h>
struct ccp_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
struct timeout sc_tick;
int sc_psp_attached;
#ifdef __amd64__
bus_dma_tag_t sc_dmat;
uint32_t sc_capabilities;
int (*sc_sev_intr)(struct ccp_softc *, uint32_t);
void * sc_ih;
bus_dmamap_t sc_cmd_map;
bus_dma_segment_t sc_cmd_seg;
size_t sc_cmd_size;
caddr_t sc_cmd_kva;
bus_dmamap_t sc_tmr_map;
bus_dma_segment_t sc_tmr_seg;
size_t sc_tmr_size;
caddr_t sc_tmr_kva;
struct rwlock sc_lock;
#endif
};
#ifdef __amd64__
#include <sys/ioctl.h>
#include <sys/rwlock.h>
/* AMD 17h */
#define PSP_REG_INTEN 0x10690
#define PSP_REG_INTSTS 0x10694
#define PSP_REG_CMDRESP 0x10980
#define PSP_REG_ADDRLO 0x109e0
#define PSP_REG_ADDRHI 0x109e4
#define PSP_REG_CAPABILITIES 0x109fc
#define PSP_PSTATE_UNINIT 0x0
#define PSP_PSTATE_INIT 0x1
#define PSP_PSTATE_WORKING 0x2
#define PSP_GSTATE_UNINIT 0x0
#define PSP_GSTATE_LUPDATE 0x1
#define PSP_GSTATE_LSECRET 0x2
#define PSP_GSTATE_RUNNING 0x3
#define PSP_GSTATE_SUPDATE 0x4
#define PSP_GSTATE_RUPDATE 0x5
#define PSP_GSTATE_SENT 0x6
#define PSP_CAP_SEV (1 << 0)
#define PSP_CAP_TEE (1 << 1)
#define PSP_CAP_DBC_THRU_EXT (1 << 2)
#define PSP_CAP_SECURITY_REPORTING (1 << 7)
#define PSP_CAP_SECURITY_FUSED_PART (1 << 8)
#define PSP_CAP_SECURITY_DEBUG_LOCK_ON (1 << 10)
#define PSP_CAP_SECURITY_TSME_STATUS (1 << 13)
#define PSP_CAP_SECURITY_ANTI_ROLLBACK_STATUS (1 << 15)
#define PSP_CAP_SECURITY_RPMC_PRODUCTION_ENABLED (1 << 16)
#define PSP_CAP_SECURITY_RPMC_SPIROM_AVAILABLE (1 << 17)
#define PSP_CAP_SECURITY_HSP_TPM_AVAILABLE (1 << 18)
#define PSP_CAP_SECURITY_ROM_ARMOR_ENFORCED (1 << 19)
#define PSP_CAP_BITS "\20\001SEV\002TEE\003DBC_THRU_EXT\010REPORTING\011FUSED_PART\013DEBUG_LOCK_ON\016TSME_STATUS\020ANTI_ROLLBACK_STATUS\021RPMC_PRODUCTION_ENABLED\022RPMC_SPIROM_AVAILABLE\023HSP_TPM_AVAILABLE\024ROM_ARMOR_ENFORCED"
#define PSP_CMDRESP_IOC (1 << 0)
#define PSP_CMDRESP_COMPLETE (1 << 1)
#define PSP_CMDRESP_RESPONSE (1 << 31)
#define PSP_STATUS_MASK 0xffff
#define PSP_STATUS_SUCCESS 0x0000
#define PSP_STATUS_INVALID_PLATFORM_STATE 0x0001
#define PSP_TMR_SIZE (1024*1024) /* 1 Mb */
#define PSP_SUCCESS 0x0000
#define PSP_INVALID_ADDRESS 0x0009
/* Selection of PSP commands of the SEV API Version 0.24 */
#define PSP_CMD_INIT 0x1
#define PSP_CMD_PLATFORMSTATUS 0x4
#define PSP_CMD_DF_FLUSH 0xa
#define PSP_CMD_DECOMMISSION 0x20
#define PSP_CMD_ACTIVATE 0x21
#define PSP_CMD_DEACTIVATE 0x22
#define PSP_CMD_GUESTSTATUS 0x23
#define PSP_CMD_LAUNCH_START 0x30
#define PSP_CMD_LAUNCH_UPDATE_DATA 0x31
#define PSP_CMD_LAUNCH_MEASURE 0x33
#define PSP_CMD_LAUNCH_FINISH 0x35
#define PSP_CMD_ATTESTATION 0x36
struct psp_platform_status {
/* Output parameters from PSP_CMD_PLATFORMSTATUS */
uint8_t api_major;
uint8_t api_minor;
uint8_t state;
uint8_t owner;
uint32_t cfges_build;
uint32_t guest_count;
} __packed;
struct psp_guest_status {
/* Input parameter for PSP_CMD_GUESTSTATUS */
uint32_t handle;
/* Output parameters from PSP_CMD_GUESTSTATUS */
uint32_t policy;
uint32_t asid;
uint8_t state;
} __packed;
struct psp_launch_start {
/* Input/Output parameter for PSP_CMD_LAUNCH_START */
uint32_t handle;
/* Input parameters for PSP_CMD_LAUNCH_START */
uint32_t policy;
/* The following input parameters are not used yet */
uint64_t dh_cert_paddr;
uint32_t dh_cert_len;
uint32_t reserved;
uint64_t session_paddr;
uint32_t session_len;
} __packed;
struct psp_launch_update_data {
/* Input parameters for PSP_CMD_LAUNCH_UPDATE_DATA */
uint32_t handle;
uint32_t reserved;
uint64_t paddr;
uint32_t length;
} __packed;
struct psp_measure {
/* Output buffer for PSP_CMD_LAUNCH_MEASURE */
uint8_t measure[32];
uint8_t measure_nonce[16];
} __packed;
struct psp_launch_measure {
/* Input parameters for PSP_CMD_LAUNCH_MEASURE */
uint32_t handle;
uint32_t reserved;
uint64_t measure_paddr;
/* Input/output parameter for PSP_CMD_LAUNCH_MEASURE */
uint32_t measure_len;
uint32_t padding;
/* Output buffer from PSP_CMD_LAUNCH_MEASURE */
struct psp_measure psp_measure; /* 64bit aligned */
#define measure psp_measure.measure
#define measure_nonce psp_measure.measure_nonce
} __packed;
struct psp_launch_finish {
/* Input parameter for PSP_CMD_LAUNCH_FINISH */
uint32_t handle;
} __packed;
struct psp_report {
/* Output buffer for PSP_CMD_ATTESTATION */
uint8_t report_nonce[16];
uint8_t report_launch_digest[32];
uint32_t report_policy;
uint32_t report_sig_usage;
uint32_t report_sig_algo;
uint32_t reserved2;
uint8_t report_sig1[144];
} __packed;
struct psp_attestation {
/* Input parameters for PSP_CMD_ATTESTATION */
uint32_t handle;
uint32_t reserved;
uint64_t attest_paddr;
uint8_t attest_nonce[16];
/* Input/output parameter from PSP_CMD_ATTESTATION */
uint32_t attest_len;
uint32_t padding;
/* Output parameter from PSP_CMD_ATTESTATION */
struct psp_report psp_report; /* 64bit aligned */
#define report_nonce psp_report.report_nonce
#define report_launch_digest psp_report.report_launch_digest
#define report_policy psp_report.report_policy
#define report_sig_usage psp_report.report_sig_usage;
#define report_report_sig_alg psp_report.report_sig_algo;
#define report_report_sig1 psp_report.report_sig1;
} __packed;
struct psp_activate {
/* Input parameters for PSP_CMD_ACTIVATE */
uint32_t handle;
uint32_t asid;
} __packed;
struct psp_deactivate {
/* Input parameter for PSP_CMD_DEACTIVATE */
uint32_t handle;
} __packed;
struct psp_decommission {
/* Input parameter for PSP_CMD_DECOMMISSION */
uint32_t handle;
} __packed;
struct psp_init {
/* Output parameters from PSP_CMD_INIT */
uint32_t enable_es;
uint32_t reserved;
uint64_t tmr_paddr;
uint32_t tmr_length;
} __packed;
/* Selection of PSP commands of the SEV-SNP ABI Version 1.55 */
#define PSP_CMD_SNP_PLATFORMSTATUS 0x81
struct psp_snp_platform_status {
uint8_t api_major;
uint8_t api_minor;
uint8_t state;
uint8_t is_rmp_init;
uint32_t build;
uint32_t features;
uint32_t guest_count;
uint64_t current_tcb;
uint64_t reported_tcb;
} __packed;
#define PSP_IOC_GET_PSTATUS _IOR('P', 0, struct psp_platform_status)
#define PSP_IOC_DF_FLUSH _IO('P', 1)
#define PSP_IOC_DECOMMISSION _IOW('P', 2, struct psp_decommission)
#define PSP_IOC_GET_GSTATUS _IOWR('P', 3, struct psp_guest_status)
#define PSP_IOC_LAUNCH_START _IOWR('P', 4, struct psp_launch_start)
#define PSP_IOC_LAUNCH_UPDATE_DATA \
_IOW('P', 5, struct psp_launch_update_data)
#define PSP_IOC_LAUNCH_MEASURE _IOWR('P', 6, struct psp_launch_measure)
#define PSP_IOC_LAUNCH_FINISH _IOW('P', 7, struct psp_launch_finish)
#define PSP_IOC_ATTESTATION _IOWR('P', 8, struct psp_attestation)
#define PSP_IOC_ACTIVATE _IOW('P', 9, struct psp_activate)
#define PSP_IOC_DEACTIVATE _IOW('P', 10, struct psp_deactivate)
#define PSP_IOC_SNP_GET_PSTATUS _IOR('P', 11, struct psp_snp_platform_status)
#endif /* __amd64__ */
#ifdef _KERNEL
void ccp_attach(struct ccp_softc *);
#ifdef __amd64__
int psp_attach(struct ccp_softc *);
int pspclose(dev_t, int, int, struct proc *);
int pspopen(dev_t, int, int, struct proc *);
int pspioctl(dev_t, u_long, caddr_t, int, struct proc *);
#endif
#endif /* _KERNEL */
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