| /***************************************************************************** |
| * Copyright (c) 2015-2020 IBM Corporation |
| * All rights reserved. |
| * This program and the accompanying materials |
| * are made available under the terms of the BSD License |
| * which accompanies this distribution, and is available at |
| * http://www.opensource.org/licenses/bsd-license.php |
| * |
| * Contributors: |
| * IBM Corporation - initial implementation |
| *****************************************************************************/ |
| |
| #ifndef TPM_DRIVERS_H |
| #define TPM_DRIVERS_H |
| |
| #include <stdint.h> |
| #include <stdbool.h> |
| #include <unistd.h> |
| |
| #include "tcgbios_int.h" |
| |
| enum tpm_duration_type { |
| TPM_DURATION_TYPE_SHORT = 0, |
| TPM_DURATION_TYPE_MEDIUM, |
| TPM_DURATION_TYPE_LONG, |
| }; |
| |
| /* firmware driver states */ |
| typedef enum { |
| VTPM_DRV_STATE_INVALID = 0, |
| VTPM_DRV_STATE_INIT_CALLED = 1, |
| VTPM_DRV_STATE_REG_CRQ = 2, |
| VTPM_DRV_STATE_WAIT_INIT = 3, |
| VTPM_DRV_STATE_SEND_INIT = 4, |
| VTPM_DRV_STATE_FAILURE = 5, |
| VTPM_DRV_STATE_WAIT_INIT_COMP = 6, |
| VTPM_DRV_STATE_SEND_INIT_COMP = 7, |
| VTPM_DRV_STATE_SEND_GET_VERSION = 8, |
| VTPM_DRV_STATE_WAIT_VERSION = 9, |
| VTPM_DRV_STATE_CHECK_VERSION = 10, |
| VTPM_DRV_STATE_SEND_BUFSIZE_REQ = 11, |
| VTPM_DRV_STATE_WAIT_BUFSIZE = 12, |
| VTPM_DRV_STATE_ALLOC_RTCE_BUF = 13, |
| VTPM_DRV_STATE_SEND_TPM_CMD = 14, |
| VTPM_DRV_STATE_WAIT_TPM_RSP = 15, |
| } vtpm_drv_state; |
| |
| /* firmware driver errors */ |
| typedef enum { |
| VTPM_DRV_ERROR_NO_FAILURE = -1, |
| VTPM_DRV_ERROR_NOT_FOUND_TIMEOUT = 0, |
| VTPM_DRV_ERROR_UNEXPECTED_REG_ERROR = 1, |
| VTPM_DRV_ERROR_PARTNER_FAILED = 2, |
| VTPM_DRV_ERROR_UNEXPECTED_TSP_ERROR = 3, |
| VTPM_DRV_ERROR_TPM_PROTOCOL_ERROR = 4, |
| VTPM_DRV_ERROR_WAIT_TIMEOUT = 5, |
| VTPM_DRV_ERROR_UNEXPECTED_SEND_ERROR = 6, |
| VTPM_DRV_ERROR_CRQ_OPEN_FAIL = 7, |
| VTPM_DRV_ERROR_BAD_STATE = 8, |
| VTPM_DRV_ERROR_TPM_FAIL = 9, |
| VTPM_DRV_ERROR_TPM_CRQ_ERROR = 10, |
| VTPM_DRV_ERROR_BAD_VERSION = 11, |
| VTPM_DRV_ERROR_BAD_RTCE_SIZE = 12, |
| VTPM_DRV_ERROR_SML_FAILURE = 13, |
| VTPM_DRV_ERROR_SML_HANDED_OVER = 14, |
| } vtpm_drv_error; |
| |
| /* the max. buffer size by the external TPM is 4k */ |
| #define PAPR_VTPM_MAX_BUFFER_SIZE 4096 |
| |
| /* exported functions */ |
| bool spapr_is_vtpm_present(void); |
| void spapr_vtpm_finalize(void); |
| vtpm_drv_error spapr_vtpm_get_error(void); |
| void spapr_vtpm_set_error(vtpm_drv_error errcode); |
| |
| struct tpm_req_header; |
| int spapr_transmit(uint8_t locty, struct tpm_req_header *req, |
| void *respbuffer, uint32_t *respbufferlen, |
| enum tpm_duration_type to_t); |
| |
| #endif /* TPM_DRIVERS_H */ |