Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / char / tpm / tpm_ibmvtpm.h
1 /*
2  * Copyright (C) 2012 IBM Corporation
3  *
4  * Author: Ashley Lai <ashleydlai@gmail.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 */
22 struct ibmvtpm_crq {
23         u8 valid;
24         u8 msg;
25         __be16 len;
26         __be32 data;
27         __be64 reserved;
28 } __attribute__((packed, aligned(8)));
29
30 struct ibmvtpm_crq_queue {
31         struct ibmvtpm_crq *crq_addr;
32         u32 index;
33         u32 num_entry;
34 };
35
36 struct 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;
41         u32 rtce_size;
42         void __iomem *rtce_buf;
43         dma_addr_t rtce_dma_handle;
44         spinlock_t rtce_lock;
45         wait_queue_head_t wq;
46         u16 res_len;
47         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