/* SPDX-License-Identifier: GPL-2.0-only */ /* * AMD Platform Security Processor (PSP) interface driver * * Copyright (C) 2017-2019 Advanced Micro Devices, Inc. * * Author: Brijesh Singh */ #ifndef __PSP_DEV_H__ #define __PSP_DEV_H__ #include #include #include #include #include #include #include #include "sp-dev.h" #define MAX_PSP_NAME_LEN 16 extern struct psp_device *psp_master; typedef void (*psp_irq_handler_t)(int, void *, unsigned int); union psp_cap_register { unsigned int raw; struct { unsigned int sev :1, tee :1, dbc_thru_ext :1, rsvd1 :4, security_reporting :1, fused_part :1, rsvd2 :1, debug_lock_on :1, rsvd3 :2, tsme_status :1, rsvd4 :1, anti_rollback_status :1, rpmc_production_enabled :1, rpmc_spirom_available :1, hsp_tpm_available :1, rom_armor_enforced :1, rsvd5 :12; }; }; struct psp_device { struct list_head entry; struct psp_vdata *vdata; char name[MAX_PSP_NAME_LEN]; struct device *dev; struct sp_device *sp; void __iomem *io_regs; struct mutex mailbox_mutex; psp_irq_handler_t sev_irq_handler; void *sev_irq_data; void *sev_data; void *tee_data; void *platform_access_data; void *dbc_data; union psp_cap_register capability; }; void psp_set_sev_irq_handler(struct psp_device *psp, psp_irq_handler_t handler, void *data); void psp_clear_sev_irq_handler(struct psp_device *psp); struct psp_device *psp_get_master_device(void); /** * enum psp_cmd - PSP mailbox commands * @PSP_CMD_TEE_RING_INIT: Initialize TEE ring buffer * @PSP_CMD_TEE_RING_DESTROY: Destroy TEE ring buffer * @PSP_CMD_TEE_EXTENDED_CMD: Extended command * @PSP_CMD_MAX: Maximum command id */ enum psp_cmd { PSP_CMD_TEE_RING_INIT = 1, PSP_CMD_TEE_RING_DESTROY = 2, PSP_CMD_TEE_EXTENDED_CMD = 14, PSP_CMD_MAX = 15, }; int psp_mailbox_command(struct psp_device *psp, enum psp_cmd cmd, void *cmdbuff, unsigned int timeout_msecs, unsigned int *cmdresp); /** * struct psp_ext_req_buffer_hdr - Structure of the extended command header * @payload_size: total payload size * @sub_cmd_id: extended command ID * @status: status of command execution (out) */ struct psp_ext_req_buffer_hdr { u32 payload_size; u32 sub_cmd_id; u32 status; } __packed; struct psp_ext_request { struct psp_ext_req_buffer_hdr header; void *buf; } __packed; /** * enum psp_sub_cmd - PSP mailbox sub commands * @PSP_SUB_CMD_DBC_GET_NONCE: Get nonce from DBC * @PSP_SUB_CMD_DBC_SET_UID: Set UID for DBC * @PSP_SUB_CMD_DBC_GET_PARAMETER: Get parameter from DBC * @PSP_SUB_CMD_DBC_SET_PARAMETER: Set parameter for DBC */ enum psp_sub_cmd { PSP_SUB_CMD_DBC_GET_NONCE = PSP_DYNAMIC_BOOST_GET_NONCE, PSP_SUB_CMD_DBC_SET_UID = PSP_DYNAMIC_BOOST_SET_UID, PSP_SUB_CMD_DBC_GET_PARAMETER = PSP_DYNAMIC_BOOST_GET_PARAMETER, PSP_SUB_CMD_DBC_SET_PARAMETER = PSP_DYNAMIC_BOOST_SET_PARAMETER, }; int psp_extended_mailbox_cmd(struct psp_device *psp, unsigned int timeout_msecs, struct psp_ext_request *req); #endif /* __PSP_DEV_H */