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tpm: Separate tpm_tis common functions from isa code

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Move the device agnostic code into tpm_tis_common.c and
put the ISA device specific code into tpm_tis_isa.c

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Message-id: 20200305165149.618-4-eric.auger@redhat.com
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
This commit is contained in:
Eric Auger 2020-03-05 17:51:42 +01:00 committed by Stefan Berger
parent ca75c42173
commit ac90053dcc
4 changed files with 271 additions and 201 deletions
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2
hw/tpm/Makefile.objs
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@ -1,6 +1,6 @@
common-obj-$(CONFIG_TPM) += tpm_util.o
obj-$(call lor,$(CONFIG_TPM_TIS),$(CONFIG_TPM_CRB)) += tpm_ppi.o
common-obj-$(CONFIG_TPM_TIS) += tpm_tis.o
common-obj-$(CONFIG_TPM_TIS) += tpm_tis_isa.o tpm_tis_common.o
common-obj-$(CONFIG_TPM_CRB) += tpm_crb.o
common-obj-$(CONFIG_TPM_PASSTHROUGH) += tpm_passthrough.o
common-obj-$(CONFIG_TPM_EMULATOR) += tpm_emulator.o

91
hw/tpm/tpm_tis.h Normal file
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@ -0,0 +1,91 @@
/*
* tpm_tis.h - QEMU's TPM TIS common header
*
* Copyright (C) 2006,2010-2013 IBM Corporation
*
* Authors:
* Stefan Berger <stefanb@us.ibm.com>
* David Safford <safford@us.ibm.com>
*
* Xen 4 support: Andrease Niederl <andreas.niederl@iaik.tugraz.at>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
* Implementation of the TIS interface according to specs found at
* http://www.trustedcomputinggroup.org. This implementation currently
* supports version 1.3, 21 March 2013
* In the developers menu choose the PC Client section then find the TIS
* specification.
*
* TPM TIS for TPM 2 implementation following TCG PC Client Platform
* TPM Profile (PTP) Specification, Familiy 2.0, Revision 00.43
*/
#ifndef TPM_TPM_TIS_H
#define TPM_TPM_TIS_H
#include "qemu/osdep.h"
#include "sysemu/tpm_backend.h"
#include "tpm_ppi.h"
#define TPM_TIS_NUM_LOCALITIES 5 /* per spec */
#define TPM_TIS_LOCALITY_SHIFT 12
#define TPM_TIS_NO_LOCALITY 0xff
#define TPM_TIS_IS_VALID_LOCTY(x) ((x) < TPM_TIS_NUM_LOCALITIES)
#define TPM_TIS_BUFFER_MAX 4096
typedef enum {
TPM_TIS_STATE_IDLE = 0,
TPM_TIS_STATE_READY,
TPM_TIS_STATE_COMPLETION,
TPM_TIS_STATE_EXECUTION,
TPM_TIS_STATE_RECEPTION,
} TPMTISState;
/* locality data -- all fields are persisted */
typedef struct TPMLocality {
TPMTISState state;
uint8_t access;
uint32_t sts;
uint32_t iface_id;
uint32_t inte;
uint32_t ints;
} TPMLocality;
typedef struct TPMState {
MemoryRegion mmio;
unsigned char buffer[TPM_TIS_BUFFER_MAX];
uint16_t rw_offset;
uint8_t active_locty;
uint8_t aborting_locty;
uint8_t next_locty;
TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
qemu_irq irq;
uint32_t irq_num;
TPMBackendCmd cmd;
TPMBackend *be_driver;
TPMVersion be_tpm_version;
size_t be_buffer_size;
bool ppi_enabled;
TPMPPI ppi;
} TPMState;
extern const VMStateDescription vmstate_locty;
extern const MemoryRegionOps tpm_tis_memory_ops;
int tpm_tis_pre_save(TPMState *s);
void tpm_tis_reset(TPMState *s);
enum TPMVersion tpm_tis_get_tpm_version(TPMState *s);
void tpm_tis_request_completed(TPMState *s, int ret);
#endif /* TPM_TPM_TIS_H */

209
hw/tpm/tpm_tis.c → hw/tpm/tpm_tis_common.c
View File

@ -1,5 +1,6 @@
/*
* tpm_tis.c - QEMU's TPM TIS interface emulator
* tpm_tis_common.c - QEMU's TPM TIS interface emulator
* device agnostic functions
*
* Copyright (C) 2006,2010-2013 IBM Corporation
*
@ -21,7 +22,6 @@
* TPM TIS for TPM 2 implementation following TCG PC Client Platform
* TPM Profile (PTP) Specification, Familiy 2.0, Revision 00.43
*/
#include "qemu/osdep.h"
#include "hw/irq.h"
#include "hw/isa/isa.h"
@ -38,67 +38,7 @@
#include "tpm_ppi.h"
#include "trace.h"
#define TPM_TIS_NUM_LOCALITIES 5 /* per spec */
#define TPM_TIS_LOCALITY_SHIFT 12
#define TPM_TIS_NO_LOCALITY 0xff
#define TPM_TIS_IS_VALID_LOCTY(x) ((x) < TPM_TIS_NUM_LOCALITIES)
#define TPM_TIS_BUFFER_MAX 4096
typedef enum {
TPM_TIS_STATE_IDLE = 0,
TPM_TIS_STATE_READY,
TPM_TIS_STATE_COMPLETION,
TPM_TIS_STATE_EXECUTION,
TPM_TIS_STATE_RECEPTION,
} TPMTISState;
/* locality data -- all fields are persisted */
typedef struct TPMLocality {
TPMTISState state;
uint8_t access;
uint32_t sts;
uint32_t iface_id;
uint32_t inte;
uint32_t ints;
} TPMLocality;
typedef struct TPMState {
MemoryRegion mmio;
unsigned char buffer[TPM_TIS_BUFFER_MAX];
uint16_t rw_offset;
uint8_t active_locty;
uint8_t aborting_locty;
uint8_t next_locty;
TPMLocality loc[TPM_TIS_NUM_LOCALITIES];
qemu_irq irq;
uint32_t irq_num;
TPMBackendCmd cmd;
TPMBackend *be_driver;
TPMVersion be_tpm_version;
size_t be_buffer_size;
bool ppi_enabled;
TPMPPI ppi;
} TPMState;
typedef struct TPMStateISA {
/*< private >*/
ISADevice parent_obj;
/*< public >*/
TPMState state; /* not a QOM object */
} TPMStateISA;
#define TPM_TIS_ISA(obj) OBJECT_CHECK(TPMStateISA, (obj), TYPE_TPM_TIS_ISA)
#include "tpm_tis.h"
#define DEBUG_TIS 0
@ -288,7 +228,7 @@ static void tpm_tis_prep_abort(TPMState *s, uint8_t locty, uint8_t newlocty)
/*
* Callback from the TPM to indicate that the response was received.
*/
static void tpm_tis_request_completed(TPMState *s, int ret)
void tpm_tis_request_completed(TPMState *s, int ret)
{
uint8_t locty = s->cmd.locty;
uint8_t l;
@ -827,7 +767,7 @@ static void tpm_tis_mmio_write(void *opaque, hwaddr addr,
}
}
static const MemoryRegionOps tpm_tis_memory_ops = {
const MemoryRegionOps tpm_tis_memory_ops = {
.read = tpm_tis_mmio_read,
.write = tpm_tis_mmio_write,
.endianness = DEVICE_LITTLE_ENDIAN,
@ -840,7 +780,7 @@ static const MemoryRegionOps tpm_tis_memory_ops = {
/*
* Get the TPMVersion of the backend device being used
*/
static enum TPMVersion tpm_tis_get_tpm_version(TPMState *s)
enum TPMVersion tpm_tis_get_tpm_version(TPMState *s)
{
if (tpm_backend_had_startup_error(s->be_driver)) {
return TPM_VERSION_UNSPEC;
@ -853,7 +793,7 @@ static enum TPMVersion tpm_tis_get_tpm_version(TPMState *s)
* This function is called when the machine starts, resets or due to
* S3 resume.
*/
static void tpm_tis_reset(TPMState *s)
void tpm_tis_reset(TPMState *s)
{
int c;
@ -898,7 +838,7 @@ static void tpm_tis_reset(TPMState *s)
/* persistent state handling */
static int tpm_tis_pre_save(TPMState *s)
int tpm_tis_pre_save(TPMState *s)
{
uint8_t locty = s->active_locty;
@ -916,7 +856,7 @@ static int tpm_tis_pre_save(TPMState *s)
return 0;
}
static const VMStateDescription vmstate_locty = {
const VMStateDescription vmstate_locty = {
.name = "tpm-tis/locty",
.version_id = 0,
.fields = (VMStateField[]) {
@ -930,134 +870,3 @@ static const VMStateDescription vmstate_locty = {
}
};
/* ISA */
static int tpm_tis_pre_save_isa(void *opaque)
{
TPMStateISA *isadev = opaque;
return tpm_tis_pre_save(&isadev->state);
}
static const VMStateDescription vmstate_tpm_tis_isa = {
.name = "tpm-tis",
.version_id = 0,
.pre_save = tpm_tis_pre_save_isa,
.fields = (VMStateField[]) {
VMSTATE_BUFFER(state.buffer, TPMStateISA),
VMSTATE_UINT16(state.rw_offset, TPMStateISA),
VMSTATE_UINT8(state.active_locty, TPMStateISA),
VMSTATE_UINT8(state.aborting_locty, TPMStateISA),
VMSTATE_UINT8(state.next_locty, TPMStateISA),
VMSTATE_STRUCT_ARRAY(state.loc, TPMStateISA, TPM_TIS_NUM_LOCALITIES, 0,
vmstate_locty, TPMLocality),
VMSTATE_END_OF_LIST()
}
};
static void tpm_tis_isa_request_completed(TPMIf *ti, int ret)
{
TPMStateISA *isadev = TPM_TIS_ISA(ti);
TPMState *s = &isadev->state;
tpm_tis_request_completed(s, ret);
}
static enum TPMVersion tpm_tis_isa_get_tpm_version(TPMIf *ti)
{
TPMStateISA *isadev = TPM_TIS_ISA(ti);
TPMState *s = &isadev->state;
return tpm_tis_get_tpm_version(s);
}
static void tpm_tis_isa_reset(DeviceState *dev)
{
TPMStateISA *isadev = TPM_TIS_ISA(dev);
TPMState *s = &isadev->state;
return tpm_tis_reset(s);
}
static Property tpm_tis_isa_properties[] = {
DEFINE_PROP_UINT32("irq", TPMStateISA, state.irq_num, TPM_TIS_IRQ),
DEFINE_PROP_TPMBE("tpmdev", TPMStateISA, state.be_driver),
DEFINE_PROP_BOOL("ppi", TPMStateISA, state.ppi_enabled, true),
DEFINE_PROP_END_OF_LIST(),
};
static void tpm_tis_isa_initfn(Object *obj)
{
TPMStateISA *isadev = TPM_TIS_ISA(obj);
TPMState *s = &isadev->state;
memory_region_init_io(&s->mmio, obj, &tpm_tis_memory_ops,
s, "tpm-tis-mmio",
TPM_TIS_NUM_LOCALITIES << TPM_TIS_LOCALITY_SHIFT);
}
static void tpm_tis_isa_realizefn(DeviceState *dev, Error **errp)
{
TPMStateISA *isadev = TPM_TIS_ISA(dev);
TPMState *s = &isadev->state;
if (!tpm_find()) {
error_setg(errp, "at most one TPM device is permitted");
return;
}
if (!s->be_driver) {
error_setg(errp, "'tpmdev' property is required");
return;
}
if (s->irq_num > 15) {
error_setg(errp, "IRQ %d is outside valid range of 0 to 15",
s->irq_num);
return;
}
isa_init_irq(ISA_DEVICE(dev), &s->irq, s->irq_num);
memory_region_add_subregion(isa_address_space(ISA_DEVICE(dev)),
TPM_TIS_ADDR_BASE, &s->mmio);
if (s->ppi_enabled) {
tpm_ppi_init(&s->ppi, isa_address_space(ISA_DEVICE(dev)),
TPM_PPI_ADDR_BASE, OBJECT(dev));
}
}
static void tpm_tis_isa_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
TPMIfClass *tc = TPM_IF_CLASS(klass);
device_class_set_props(dc, tpm_tis_isa_properties);
dc->vmsd = &vmstate_tpm_tis_isa;
tc->model = TPM_MODEL_TPM_TIS;
dc->realize = tpm_tis_isa_realizefn;
dc->reset = tpm_tis_isa_reset;
tc->request_completed = tpm_tis_isa_request_completed;
tc->get_version = tpm_tis_isa_get_tpm_version;
}
static const TypeInfo tpm_tis_isa_info = {
.name = TYPE_TPM_TIS_ISA,
.parent = TYPE_ISA_DEVICE,
.instance_size = sizeof(TPMStateISA),
.instance_init = tpm_tis_isa_initfn,
.class_init = tpm_tis_isa_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_TPM_IF },
{ }
}
};
static void tpm_tis_isa_register(void)
{
type_register_static(&tpm_tis_isa_info);
}
type_init(tpm_tis_isa_register)

170
hw/tpm/tpm_tis_isa.c Normal file
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@ -0,0 +1,170 @@
/*
* tpm_tis_isa.c - QEMU's TPM TIS ISA Device
*
* Copyright (C) 2006,2010-2013 IBM Corporation
*
* Authors:
* Stefan Berger <stefanb@us.ibm.com>
* David Safford <safford@us.ibm.com>
*
* Xen 4 support: Andrease Niederl <andreas.niederl@iaik.tugraz.at>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
* Implementation of the TIS interface according to specs found at
* http://www.trustedcomputinggroup.org. This implementation currently
* supports version 1.3, 21 March 2013
* In the developers menu choose the PC Client section then find the TIS
* specification.
*
* TPM TIS for TPM 2 implementation following TCG PC Client Platform
* TPM Profile (PTP) Specification, Familiy 2.0, Revision 00.43
*/
#include "qemu/osdep.h"
#include "hw/isa/isa.h"
#include "hw/qdev-properties.h"
#include "migration/vmstate.h"
#include "tpm_util.h"
#include "tpm_tis.h"
typedef struct TPMStateISA {
/*< private >*/
ISADevice parent_obj;
/*< public >*/
TPMState state; /* not a QOM object */
} TPMStateISA;
#define TPM_TIS_ISA(obj) OBJECT_CHECK(TPMStateISA, (obj), TYPE_TPM_TIS_ISA)
static int tpm_tis_pre_save_isa(void *opaque)
{
TPMStateISA *isadev = opaque;
return tpm_tis_pre_save(&isadev->state);
}
static const VMStateDescription vmstate_tpm_tis_isa = {
.name = "tpm-tis",
.version_id = 0,
.pre_save = tpm_tis_pre_save_isa,
.fields = (VMStateField[]) {
VMSTATE_BUFFER(state.buffer, TPMStateISA),
VMSTATE_UINT16(state.rw_offset, TPMStateISA),
VMSTATE_UINT8(state.active_locty, TPMStateISA),
VMSTATE_UINT8(state.aborting_locty, TPMStateISA),
VMSTATE_UINT8(state.next_locty, TPMStateISA),
VMSTATE_STRUCT_ARRAY(state.loc, TPMStateISA, TPM_TIS_NUM_LOCALITIES, 0,
vmstate_locty, TPMLocality),
VMSTATE_END_OF_LIST()
}
};
static void tpm_tis_isa_request_completed(TPMIf *ti, int ret)
{
TPMStateISA *isadev = TPM_TIS_ISA(ti);
TPMState *s = &isadev->state;
tpm_tis_request_completed(s, ret);
}
static enum TPMVersion tpm_tis_isa_get_tpm_version(TPMIf *ti)
{
TPMStateISA *isadev = TPM_TIS_ISA(ti);
TPMState *s = &isadev->state;
return tpm_tis_get_tpm_version(s);
}
static void tpm_tis_isa_reset(DeviceState *dev)
{
TPMStateISA *isadev = TPM_TIS_ISA(dev);
TPMState *s = &isadev->state;
return tpm_tis_reset(s);
}
static Property tpm_tis_isa_properties[] = {
DEFINE_PROP_UINT32("irq", TPMStateISA, state.irq_num, TPM_TIS_IRQ),
DEFINE_PROP_TPMBE("tpmdev", TPMStateISA, state.be_driver),
DEFINE_PROP_BOOL("ppi", TPMStateISA, state.ppi_enabled, true),
DEFINE_PROP_END_OF_LIST(),
};
static void tpm_tis_isa_initfn(Object *obj)
{
TPMStateISA *isadev = TPM_TIS_ISA(obj);
TPMState *s = &isadev->state;
memory_region_init_io(&s->mmio, obj, &tpm_tis_memory_ops,
s, "tpm-tis-mmio",
TPM_TIS_NUM_LOCALITIES << TPM_TIS_LOCALITY_SHIFT);
}
static void tpm_tis_isa_realizefn(DeviceState *dev, Error **errp)
{
TPMStateISA *isadev = TPM_TIS_ISA(dev);
TPMState *s = &isadev->state;
if (!tpm_find()) {
error_setg(errp, "at most one TPM device is permitted");
return;
}
if (!s->be_driver) {
error_setg(errp, "'tpmdev' property is required");
return;
}
if (s->irq_num > 15) {
error_setg(errp, "IRQ %d is outside valid range of 0 to 15",
s->irq_num);
return;
}
isa_init_irq(ISA_DEVICE(dev), &s->irq, s->irq_num);
memory_region_add_subregion(isa_address_space(ISA_DEVICE(dev)),
TPM_TIS_ADDR_BASE, &s->mmio);
if (s->ppi_enabled) {
tpm_ppi_init(&s->ppi, isa_address_space(ISA_DEVICE(dev)),
TPM_PPI_ADDR_BASE, OBJECT(dev));
}
}
static void tpm_tis_isa_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
TPMIfClass *tc = TPM_IF_CLASS(klass);
device_class_set_props(dc, tpm_tis_isa_properties);
dc->vmsd = &vmstate_tpm_tis_isa;
tc->model = TPM_MODEL_TPM_TIS;
dc->realize = tpm_tis_isa_realizefn;
dc->reset = tpm_tis_isa_reset;
tc->request_completed = tpm_tis_isa_request_completed;
tc->get_version = tpm_tis_isa_get_tpm_version;
}
static const TypeInfo tpm_tis_isa_info = {
.name = TYPE_TPM_TIS_ISA,
.parent = TYPE_ISA_DEVICE,
.instance_size = sizeof(TPMStateISA),
.instance_init = tpm_tis_isa_initfn,
.class_init = tpm_tis_isa_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_TPM_IF },
{ }
}
};
static void tpm_tis_isa_register(void)
{
type_register_static(&tpm_tis_isa_info);
}
type_init(tpm_tis_isa_register)