blob: bd82a791f995d6657f15082bb3f3b957dbc499dc [file] [log] [blame]
Ashley Lai132f7622012-08-22 16:17:43 -05001/*
2 * Copyright (C) 2012 IBM Corporation
3 *
4 * Author: Ashley Lai <adlai@us.ibm.com>
5 *
6 * Maintained by: <tpmdd-devel@lists.sourceforge.net>
7 *
8 * Device driver for TCG/TCPA TPM (trusted platform module).
9 * Specifications at www.trustedcomputinggroup.org
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation, version 2 of the
14 * License.
15 *
16 */
17
18#ifndef __TPM_IBMVTPM_H__
19#define __TPM_IBMVTPM_H__
20
21/* vTPM Message Format 1 */
22struct ibmvtpm_crq {
23 u8 valid;
24 u8 msg;
25 u16 len;
26 u32 data;
27 u64 reserved;
28} __attribute__((packed, aligned(8)));
29
30struct ibmvtpm_crq_queue {
31 struct ibmvtpm_crq *crq_addr;
32 u32 index;
33 u32 num_entry;
34};
35
36struct ibmvtpm_dev {
37 struct device *dev;
38 struct vio_dev *vdev;
39 struct ibmvtpm_crq_queue crq_queue;
40 dma_addr_t crq_dma_handle;
Ashley Lai132f7622012-08-22 16:17:43 -050041 u32 rtce_size;
42 void __iomem *rtce_buf;
43 dma_addr_t rtce_dma_handle;
44 spinlock_t rtce_lock;
Ashley Laib5666502012-09-12 12:49:50 -050045 wait_queue_head_t wq;
46 u16 res_len;
Ashley Lai132f7622012-08-22 16:17:43 -050047 u32 vtpm_version;
48};
49
50#define CRQ_RES_BUF_SIZE PAGE_SIZE
51
52/* Initialize CRQ */
53#define INIT_CRQ_CMD 0xC001000000000000LL /* Init cmd */
54#define INIT_CRQ_COMP_CMD 0xC002000000000000LL /* Init complete cmd */
55#define INIT_CRQ_RES 0x01 /* Init respond */
56#define INIT_CRQ_COMP_RES 0x02 /* Init complete respond */
57#define VALID_INIT_CRQ 0xC0 /* Valid command for init crq */
58
59/* vTPM CRQ response is the message type | 0x80 */
60#define VTPM_MSG_RES 0x80
61#define IBMVTPM_VALID_CMD 0x80
62
63/* vTPM CRQ message types */
64#define VTPM_GET_VERSION 0x01
65#define VTPM_GET_VERSION_RES (0x01 | VTPM_MSG_RES)
66
67#define VTPM_TPM_COMMAND 0x02
68#define VTPM_TPM_COMMAND_RES (0x02 | VTPM_MSG_RES)
69
70#define VTPM_GET_RTCE_BUFFER_SIZE 0x03
71#define VTPM_GET_RTCE_BUFFER_SIZE_RES (0x03 | VTPM_MSG_RES)
72
73#define VTPM_PREPARE_TO_SUSPEND 0x04
74#define VTPM_PREPARE_TO_SUSPEND_RES (0x04 | VTPM_MSG_RES)
75
76#endif