/* * Copyright (C) 2012 IBM Corporation * * Author: Ashley Lai <ashleydlai@gmail.com> * * Maintained by: <tpmdd-devel@lists.sourceforge.net> * * Device driver for TCG/TCPA TPM (trusted platform module). * Specifications at www.trustedcomputinggroup.org * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation, version 2 of the * License. * */ #ifndef __TPM_IBMVTPM_H__ #define __TPM_IBMVTPM_H__ /* vTPM Message Format 1 */ struct ibmvtpm_crq { u8 valid; u8 msg; __be16 len; __be32 data; __be64 reserved; } __attribute__((packed, aligned(8))); struct ibmvtpm_crq_queue { struct ibmvtpm_crq *crq_addr; u32 index; u32 num_entry; }; struct ibmvtpm_dev { struct device *dev; struct vio_dev *vdev; struct ibmvtpm_crq_queue crq_queue; dma_addr_t crq_dma_handle; u32 rtce_size; void __iomem *rtce_buf; dma_addr_t rtce_dma_handle; spinlock_t rtce_lock; wait_queue_head_t wq; u16 res_len; u32 vtpm_version; bool tpm_processing_cmd; }; #define CRQ_RES_BUF_SIZE PAGE_SIZE /* Initialize CRQ */ #define INIT_CRQ_CMD 0xC001000000000000LL /* Init cmd */ #define INIT_CRQ_COMP_CMD 0xC002000000000000LL /* Init complete cmd */ #define INIT_CRQ_RES 0x01 /* Init respond */ #define INIT_CRQ_COMP_RES 0x02 /* Init complete respond */ #define VALID_INIT_CRQ 0xC0 /* Valid command for init crq */ /* vTPM CRQ response is the message type | 0x80 */ #define VTPM_MSG_RES 0x80 #define IBMVTPM_VALID_CMD 0x80 /* vTPM CRQ message types */ #define VTPM_GET_VERSION 0x01 #define VTPM_GET_VERSION_RES (0x01 | VTPM_MSG_RES) #define VTPM_TPM_COMMAND 0x02 #define VTPM_TPM_COMMAND_RES (0x02 | VTPM_MSG_RES) #define VTPM_GET_RTCE_BUFFER_SIZE 0x03 #define VTPM_GET_RTCE_BUFFER_SIZE_RES (0x03 | VTPM_MSG_RES) #define VTPM_PREPARE_TO_SUSPEND 0x04 #define VTPM_PREPARE_TO_SUSPEND_RES (0x04 | VTPM_MSG_RES) #endif