2 * tpm_tis_sysbus.c - QEMU's TPM TIS SYSBUS Device
4 * Copyright (C) 2006,2010-2013 IBM Corporation
7 * Stefan Berger <stefanb@us.ibm.com>
8 * David Safford <safford@us.ibm.com>
10 * Xen 4 support: Andrease Niederl <andreas.niederl@iaik.tugraz.at>
12 * This work is licensed under the terms of the GNU GPL, version 2 or later.
13 * See the COPYING file in the top-level directory.
15 * Implementation of the TIS interface according to specs found at
16 * http://www.trustedcomputinggroup.org. This implementation currently
17 * supports version 1.3, 21 March 2013
18 * In the developers menu choose the PC Client section then find the TIS
21 * TPM TIS for TPM 2 implementation following TCG PC Client Platform
22 * TPM Profile (PTP) Specification, Familiy 2.0, Revision 00.43
25 #include "qemu/osdep.h"
26 #include "hw/qdev-properties.h"
27 #include "migration/vmstate.h"
28 #include "hw/acpi/tpm.h"
30 #include "hw/sysbus.h"
32 #include "qom/object.h"
34 struct TPMStateSysBus
{
36 SysBusDevice parent_obj
;
39 TPMState state
; /* not a QOM object */
41 typedef struct TPMStateSysBus TPMStateSysBus
;
43 #define TPM_TIS_SYSBUS(obj) OBJECT_CHECK(TPMStateSysBus, (obj), TYPE_TPM_TIS_SYSBUS)
45 static int tpm_tis_pre_save_sysbus(void *opaque
)
47 TPMStateSysBus
*sbdev
= opaque
;
49 return tpm_tis_pre_save(&sbdev
->state
);
52 static const VMStateDescription vmstate_tpm_tis_sysbus
= {
55 .pre_save
= tpm_tis_pre_save_sysbus
,
56 .fields
= (VMStateField
[]) {
57 VMSTATE_BUFFER(state
.buffer
, TPMStateSysBus
),
58 VMSTATE_UINT16(state
.rw_offset
, TPMStateSysBus
),
59 VMSTATE_UINT8(state
.active_locty
, TPMStateSysBus
),
60 VMSTATE_UINT8(state
.aborting_locty
, TPMStateSysBus
),
61 VMSTATE_UINT8(state
.next_locty
, TPMStateSysBus
),
63 VMSTATE_STRUCT_ARRAY(state
.loc
, TPMStateSysBus
, TPM_TIS_NUM_LOCALITIES
,
64 0, vmstate_locty
, TPMLocality
),
70 static void tpm_tis_sysbus_request_completed(TPMIf
*ti
, int ret
)
72 TPMStateSysBus
*sbdev
= TPM_TIS_SYSBUS(ti
);
73 TPMState
*s
= &sbdev
->state
;
75 tpm_tis_request_completed(s
, ret
);
78 static enum TPMVersion
tpm_tis_sysbus_get_tpm_version(TPMIf
*ti
)
80 TPMStateSysBus
*sbdev
= TPM_TIS_SYSBUS(ti
);
81 TPMState
*s
= &sbdev
->state
;
83 return tpm_tis_get_tpm_version(s
);
86 static void tpm_tis_sysbus_reset(DeviceState
*dev
)
88 TPMStateSysBus
*sbdev
= TPM_TIS_SYSBUS(dev
);
89 TPMState
*s
= &sbdev
->state
;
91 return tpm_tis_reset(s
);
94 static Property tpm_tis_sysbus_properties
[] = {
95 DEFINE_PROP_UINT32("irq", TPMStateSysBus
, state
.irq_num
, TPM_TIS_IRQ
),
96 DEFINE_PROP_TPMBE("tpmdev", TPMStateSysBus
, state
.be_driver
),
97 DEFINE_PROP_BOOL("ppi", TPMStateSysBus
, state
.ppi_enabled
, false),
98 DEFINE_PROP_END_OF_LIST(),
101 static void tpm_tis_sysbus_initfn(Object
*obj
)
103 TPMStateSysBus
*sbdev
= TPM_TIS_SYSBUS(obj
);
104 TPMState
*s
= &sbdev
->state
;
106 memory_region_init_io(&s
->mmio
, obj
, &tpm_tis_memory_ops
,
108 TPM_TIS_NUM_LOCALITIES
<< TPM_TIS_LOCALITY_SHIFT
);
110 sysbus_init_mmio(SYS_BUS_DEVICE(obj
), &s
->mmio
);
111 sysbus_init_irq(SYS_BUS_DEVICE(obj
), &s
->irq
);
114 static void tpm_tis_sysbus_realizefn(DeviceState
*dev
, Error
**errp
)
116 TPMStateSysBus
*sbdev
= TPM_TIS_SYSBUS(dev
);
117 TPMState
*s
= &sbdev
->state
;
120 error_setg(errp
, "at most one TPM device is permitted");
125 error_setg(errp
, "'tpmdev' property is required");
130 static void tpm_tis_sysbus_class_init(ObjectClass
*klass
, void *data
)
132 DeviceClass
*dc
= DEVICE_CLASS(klass
);
133 TPMIfClass
*tc
= TPM_IF_CLASS(klass
);
135 device_class_set_props(dc
, tpm_tis_sysbus_properties
);
136 dc
->vmsd
= &vmstate_tpm_tis_sysbus
;
137 tc
->model
= TPM_MODEL_TPM_TIS
;
138 dc
->realize
= tpm_tis_sysbus_realizefn
;
139 dc
->user_creatable
= true;
140 dc
->reset
= tpm_tis_sysbus_reset
;
141 tc
->request_completed
= tpm_tis_sysbus_request_completed
;
142 tc
->get_version
= tpm_tis_sysbus_get_tpm_version
;
145 static const TypeInfo tpm_tis_sysbus_info
= {
146 .name
= TYPE_TPM_TIS_SYSBUS
,
147 .parent
= TYPE_SYS_BUS_DEVICE
,
148 .instance_size
= sizeof(TPMStateSysBus
),
149 .instance_init
= tpm_tis_sysbus_initfn
,
150 .class_init
= tpm_tis_sysbus_class_init
,
151 .interfaces
= (InterfaceInfo
[]) {
157 static void tpm_tis_sysbus_register(void)
159 type_register_static(&tpm_tis_sysbus_info
);
162 type_init(tpm_tis_sysbus_register
)