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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * Copyright (C) 2012 IBM Corporation4 *5 * Author: Ashley Lai <ashleydlai@gmail.com>6 *7 * Maintained by: <tpmdd-devel@lists.sourceforge.net>8 *9 * Device driver for TCG/TCPA TPM (trusted platform module).10 * Specifications at www.trustedcomputinggroup.org11 */12 13#ifndef __TPM_IBMVTPM_H__14#define __TPM_IBMVTPM_H__15 16/* vTPM Message Format 1 */17struct ibmvtpm_crq {18 u8 valid;19 u8 msg;20 __be16 len;21 __be32 data;22 __be64 reserved;23} __attribute__((packed, aligned(8)));24 25struct ibmvtpm_crq_queue {26 struct ibmvtpm_crq *crq_addr;27 u32 index;28 u32 num_entry;29 wait_queue_head_t wq;30};31 32struct ibmvtpm_dev {33 struct device *dev;34 struct vio_dev *vdev;35 struct ibmvtpm_crq_queue crq_queue;36 dma_addr_t crq_dma_handle;37 u32 rtce_size;38 void __iomem *rtce_buf;39 dma_addr_t rtce_dma_handle;40 spinlock_t rtce_lock;41 wait_queue_head_t wq;42 u16 res_len;43 u32 vtpm_version;44 u8 tpm_processing_cmd;45};46 47#define CRQ_RES_BUF_SIZE PAGE_SIZE48 49/* Initialize CRQ */50#define INIT_CRQ_CMD 0xC001000000000000LL /* Init cmd */51#define INIT_CRQ_COMP_CMD 0xC002000000000000LL /* Init complete cmd */52#define INIT_CRQ_RES 0x01 /* Init respond */53#define INIT_CRQ_COMP_RES 0x02 /* Init complete respond */54#define VALID_INIT_CRQ 0xC0 /* Valid command for init crq */55 56/* vTPM CRQ response is the message type | 0x80 */57#define VTPM_MSG_RES 0x8058#define IBMVTPM_VALID_CMD 0x8059 60/* vTPM CRQ message types */61#define VTPM_GET_VERSION 0x0162#define VTPM_GET_VERSION_RES (0x01 | VTPM_MSG_RES)63 64#define VTPM_TPM_COMMAND 0x0265#define VTPM_TPM_COMMAND_RES (0x02 | VTPM_MSG_RES)66 67#define VTPM_GET_RTCE_BUFFER_SIZE 0x0368#define VTPM_GET_RTCE_BUFFER_SIZE_RES (0x03 | VTPM_MSG_RES)69 70#define VTPM_PREPARE_TO_SUSPEND 0x0471#define VTPM_PREPARE_TO_SUSPEND_RES (0x04 | VTPM_MSG_RES)72 73#endif74