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tests: add test for TPM TIS device

Browse source 
Move the TPM TIS related register and flag #defines into
include/hw/acpi/tpm.h for access by the test case.

Write a test case that covers the TIS functionality.

Add the tests cases to the MAINTAINERS file.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
This commit is contained in:
Stefan Berger 2018-02-14 19:51:48 -05:00
parent 0e6ca9547b
commit adb0e917e6
6 changed files with 601 additions and 101 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

1
MAINTAINERS
View file

@ -1633,6 +1633,7 @@ F: include/hw/acpi/tpm.h
F: include/sysemu/tpm*
F: qapi/tpm.json
F: backends/tpm.c
F: tests/*tpm*
T: git git://github.com/stefanberger/qemu-tpm.git tpm-next
Checkpatch

101
hw/tpm/tpm_tis.c
View file

@ -92,107 +92,6 @@ typedef struct TPMState {
} \
} while (0)
/* tis registers */
#define TPM_TIS_REG_ACCESS 0x00
#define TPM_TIS_REG_INT_ENABLE 0x08
#define TPM_TIS_REG_INT_VECTOR 0x0c
#define TPM_TIS_REG_INT_STATUS 0x10
#define TPM_TIS_REG_INTF_CAPABILITY 0x14
#define TPM_TIS_REG_STS 0x18
#define TPM_TIS_REG_DATA_FIFO 0x24
#define TPM_TIS_REG_INTERFACE_ID 0x30
#define TPM_TIS_REG_DATA_XFIFO 0x80
#define TPM_TIS_REG_DATA_XFIFO_END 0xbc
#define TPM_TIS_REG_DID_VID 0xf00
#define TPM_TIS_REG_RID 0xf04
/* vendor-specific registers */
#define TPM_TIS_REG_DEBUG 0xf90
#define TPM_TIS_STS_TPM_FAMILY_MASK (0x3 << 26)/* TPM 2.0 */
#define TPM_TIS_STS_TPM_FAMILY1_2 (0 << 26) /* TPM 2.0 */
#define TPM_TIS_STS_TPM_FAMILY2_0 (1 << 26) /* TPM 2.0 */
#define TPM_TIS_STS_RESET_ESTABLISHMENT_BIT (1 << 25) /* TPM 2.0 */
#define TPM_TIS_STS_COMMAND_CANCEL (1 << 24) /* TPM 2.0 */
#define TPM_TIS_STS_VALID (1 << 7)
#define TPM_TIS_STS_COMMAND_READY (1 << 6)
#define TPM_TIS_STS_TPM_GO (1 << 5)
#define TPM_TIS_STS_DATA_AVAILABLE (1 << 4)
#define TPM_TIS_STS_EXPECT (1 << 3)
#define TPM_TIS_STS_SELFTEST_DONE (1 << 2)
#define TPM_TIS_STS_RESPONSE_RETRY (1 << 1)
#define TPM_TIS_BURST_COUNT_SHIFT 8
#define TPM_TIS_BURST_COUNT(X) \
((X) << TPM_TIS_BURST_COUNT_SHIFT)
#define TPM_TIS_ACCESS_TPM_REG_VALID_STS (1 << 7)
#define TPM_TIS_ACCESS_ACTIVE_LOCALITY (1 << 5)
#define TPM_TIS_ACCESS_BEEN_SEIZED (1 << 4)
#define TPM_TIS_ACCESS_SEIZE (1 << 3)
#define TPM_TIS_ACCESS_PENDING_REQUEST (1 << 2)
#define TPM_TIS_ACCESS_REQUEST_USE (1 << 1)
#define TPM_TIS_ACCESS_TPM_ESTABLISHMENT (1 << 0)
#define TPM_TIS_INT_ENABLED (1 << 31)
#define TPM_TIS_INT_DATA_AVAILABLE (1 << 0)
#define TPM_TIS_INT_STS_VALID (1 << 1)
#define TPM_TIS_INT_LOCALITY_CHANGED (1 << 2)
#define TPM_TIS_INT_COMMAND_READY (1 << 7)
#define TPM_TIS_INT_POLARITY_MASK (3 << 3)
#define TPM_TIS_INT_POLARITY_LOW_LEVEL (1 << 3)
#define TPM_TIS_INTERRUPTS_SUPPORTED (TPM_TIS_INT_LOCALITY_CHANGED | \
TPM_TIS_INT_DATA_AVAILABLE | \
TPM_TIS_INT_STS_VALID | \
TPM_TIS_INT_COMMAND_READY)
#define TPM_TIS_CAP_INTERFACE_VERSION1_3 (2 << 28)
#define TPM_TIS_CAP_INTERFACE_VERSION1_3_FOR_TPM2_0 (3 << 28)
#define TPM_TIS_CAP_DATA_TRANSFER_64B (3 << 9)
#define TPM_TIS_CAP_DATA_TRANSFER_LEGACY (0 << 9)
#define TPM_TIS_CAP_BURST_COUNT_DYNAMIC (0 << 8)
#define TPM_TIS_CAP_INTERRUPT_LOW_LEVEL (1 << 4) /* support is mandatory */
#define TPM_TIS_CAPABILITIES_SUPPORTED1_3 \
(TPM_TIS_CAP_INTERRUPT_LOW_LEVEL | \
TPM_TIS_CAP_BURST_COUNT_DYNAMIC | \
TPM_TIS_CAP_DATA_TRANSFER_64B | \
TPM_TIS_CAP_INTERFACE_VERSION1_3 | \
TPM_TIS_INTERRUPTS_SUPPORTED)
#define TPM_TIS_CAPABILITIES_SUPPORTED2_0 \
(TPM_TIS_CAP_INTERRUPT_LOW_LEVEL | \
TPM_TIS_CAP_BURST_COUNT_DYNAMIC | \
TPM_TIS_CAP_DATA_TRANSFER_64B | \
TPM_TIS_CAP_INTERFACE_VERSION1_3_FOR_TPM2_0 | \
TPM_TIS_INTERRUPTS_SUPPORTED)
#define TPM_TIS_IFACE_ID_INTERFACE_TIS1_3 (0xf) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_INTERFACE_FIFO (0x0) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_INTERFACE_VER_FIFO (0 << 4) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_CAP_5_LOCALITIES (1 << 8) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_CAP_TIS_SUPPORTED (1 << 13) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_INT_SEL_LOCK (1 << 19) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_SUPPORTED_FLAGS1_3 \
(TPM_TIS_IFACE_ID_INTERFACE_TIS1_3 | \
(~0u << 4)/* all of it is don't care */)
/* if backend was a TPM 2.0: */
#define TPM_TIS_IFACE_ID_SUPPORTED_FLAGS2_0 \
(TPM_TIS_IFACE_ID_INTERFACE_FIFO | \
TPM_TIS_IFACE_ID_INTERFACE_VER_FIFO | \
TPM_TIS_IFACE_ID_CAP_5_LOCALITIES | \
TPM_TIS_IFACE_ID_CAP_TIS_SUPPORTED)
#define TPM_TIS_TPM_DID 0x0001
#define TPM_TIS_TPM_VID PCI_VENDOR_ID_IBM
#define TPM_TIS_TPM_RID 0x0001
#define TPM_TIS_NO_DATA_BYTE 0xff
/* local prototypes */
static uint64_t tpm_tis_mmio_read(void *opaque, hwaddr addr,

105
include/hw/acpi/tpm.h
View file

@ -23,6 +23,111 @@
#define TPM_TIS_IRQ 5
#define TPM_TIS_NUM_LOCALITIES 5 /* per spec */
#define TPM_TIS_LOCALITY_SHIFT 12
/* tis registers */
#define TPM_TIS_REG_ACCESS 0x00
#define TPM_TIS_REG_INT_ENABLE 0x08
#define TPM_TIS_REG_INT_VECTOR 0x0c
#define TPM_TIS_REG_INT_STATUS 0x10
#define TPM_TIS_REG_INTF_CAPABILITY 0x14
#define TPM_TIS_REG_STS 0x18
#define TPM_TIS_REG_DATA_FIFO 0x24
#define TPM_TIS_REG_INTERFACE_ID 0x30
#define TPM_TIS_REG_DATA_XFIFO 0x80
#define TPM_TIS_REG_DATA_XFIFO_END 0xbc
#define TPM_TIS_REG_DID_VID 0xf00
#define TPM_TIS_REG_RID 0xf04
/* vendor-specific registers */
#define TPM_TIS_REG_DEBUG 0xf90
#define TPM_TIS_STS_TPM_FAMILY_MASK (0x3 << 26)/* TPM 2.0 */
#define TPM_TIS_STS_TPM_FAMILY1_2 (0 << 26) /* TPM 2.0 */
#define TPM_TIS_STS_TPM_FAMILY2_0 (1 << 26) /* TPM 2.0 */
#define TPM_TIS_STS_RESET_ESTABLISHMENT_BIT (1 << 25) /* TPM 2.0 */
#define TPM_TIS_STS_COMMAND_CANCEL (1 << 24) /* TPM 2.0 */
#define TPM_TIS_STS_VALID (1 << 7)
#define TPM_TIS_STS_COMMAND_READY (1 << 6)
#define TPM_TIS_STS_TPM_GO (1 << 5)
#define TPM_TIS_STS_DATA_AVAILABLE (1 << 4)
#define TPM_TIS_STS_EXPECT (1 << 3)
#define TPM_TIS_STS_SELFTEST_DONE (1 << 2)
#define TPM_TIS_STS_RESPONSE_RETRY (1 << 1)
#define TPM_TIS_BURST_COUNT_SHIFT 8
#define TPM_TIS_BURST_COUNT(X) \
((X) << TPM_TIS_BURST_COUNT_SHIFT)
#define TPM_TIS_ACCESS_TPM_REG_VALID_STS (1 << 7)
#define TPM_TIS_ACCESS_ACTIVE_LOCALITY (1 << 5)
#define TPM_TIS_ACCESS_BEEN_SEIZED (1 << 4)
#define TPM_TIS_ACCESS_SEIZE (1 << 3)
#define TPM_TIS_ACCESS_PENDING_REQUEST (1 << 2)
#define TPM_TIS_ACCESS_REQUEST_USE (1 << 1)
#define TPM_TIS_ACCESS_TPM_ESTABLISHMENT (1 << 0)
#define TPM_TIS_INT_ENABLED (1 << 31)
#define TPM_TIS_INT_DATA_AVAILABLE (1 << 0)
#define TPM_TIS_INT_STS_VALID (1 << 1)
#define TPM_TIS_INT_LOCALITY_CHANGED (1 << 2)
#define TPM_TIS_INT_COMMAND_READY (1 << 7)
#define TPM_TIS_INT_POLARITY_MASK (3 << 3)
#define TPM_TIS_INT_POLARITY_LOW_LEVEL (1 << 3)
#define TPM_TIS_INTERRUPTS_SUPPORTED (TPM_TIS_INT_LOCALITY_CHANGED | \
TPM_TIS_INT_DATA_AVAILABLE | \
TPM_TIS_INT_STS_VALID | \
TPM_TIS_INT_COMMAND_READY)
#define TPM_TIS_CAP_INTERFACE_VERSION1_3 (2 << 28)
#define TPM_TIS_CAP_INTERFACE_VERSION1_3_FOR_TPM2_0 (3 << 28)
#define TPM_TIS_CAP_DATA_TRANSFER_64B (3 << 9)
#define TPM_TIS_CAP_DATA_TRANSFER_LEGACY (0 << 9)
#define TPM_TIS_CAP_BURST_COUNT_DYNAMIC (0 << 8)
#define TPM_TIS_CAP_INTERRUPT_LOW_LEVEL (1 << 4) /* support is mandatory */
#define TPM_TIS_CAPABILITIES_SUPPORTED1_3 \
(TPM_TIS_CAP_INTERRUPT_LOW_LEVEL | \
TPM_TIS_CAP_BURST_COUNT_DYNAMIC | \
TPM_TIS_CAP_DATA_TRANSFER_64B | \
TPM_TIS_CAP_INTERFACE_VERSION1_3 | \
TPM_TIS_INTERRUPTS_SUPPORTED)
#define TPM_TIS_CAPABILITIES_SUPPORTED2_0 \
(TPM_TIS_CAP_INTERRUPT_LOW_LEVEL | \
TPM_TIS_CAP_BURST_COUNT_DYNAMIC | \
TPM_TIS_CAP_DATA_TRANSFER_64B | \
TPM_TIS_CAP_INTERFACE_VERSION1_3_FOR_TPM2_0 | \
TPM_TIS_INTERRUPTS_SUPPORTED)
#define TPM_TIS_IFACE_ID_INTERFACE_TIS1_3 (0xf) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_INTERFACE_FIFO (0x0) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_INTERFACE_VER_FIFO (0 << 4) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_CAP_5_LOCALITIES (1 << 8) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_CAP_TIS_SUPPORTED (1 << 13) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_INT_SEL_LOCK (1 << 19) /* TPM 2.0 */
#define TPM_TIS_IFACE_ID_SUPPORTED_FLAGS1_3 \
(TPM_TIS_IFACE_ID_INTERFACE_TIS1_3 | \
(~0u << 4)/* all of it is don't care */)
/* if backend was a TPM 2.0: */
#define TPM_TIS_IFACE_ID_SUPPORTED_FLAGS2_0 \
(TPM_TIS_IFACE_ID_INTERFACE_FIFO | \
TPM_TIS_IFACE_ID_INTERFACE_VER_FIFO | \
TPM_TIS_IFACE_ID_CAP_5_LOCALITIES | \
TPM_TIS_IFACE_ID_CAP_TIS_SUPPORTED)
#define TPM_TIS_TPM_DID 0x0001
#define TPM_TIS_TPM_VID PCI_VENDOR_ID_IBM
#define TPM_TIS_TPM_RID 0x0001
#define TPM_TIS_NO_DATA_BYTE 0xff
REG32(CRB_LOC_STATE, 0x00)
FIELD(CRB_LOC_STATE, tpmEstablished, 0, 1)
FIELD(CRB_LOC_STATE, locAssigned, 1, 1)

2
tests/Makefile.include
View file

@ -287,6 +287,7 @@ ifeq ($(CONFIG_VHOST_USER_NET_TEST_i386),)
check-qtest-x86_64-$(CONFIG_VHOST_USER_NET_TEST_x86_64) += tests/vhost-user-test$(EXESUF)
endif
check-qtest-i386-$(CONFIG_TPM) += tests/tpm-crb-test$(EXESUF)
check-qtest-i386-$(CONFIG_TPM) += tests/tpm-tis-test$(EXESUF)
check-qtest-i386-$(CONFIG_SLIRP) += tests/test-netfilter$(EXESUF)
check-qtest-i386-$(CONFIG_POSIX) += tests/test-filter-mirror$(EXESUF)
check-qtest-i386-$(CONFIG_POSIX) += tests/test-filter-redirector$(EXESUF)
@ -715,6 +716,7 @@ tests/test-io-task$(EXESUF): tests/test-io-task.o $(test-io-obj-y)
tests/test-io-channel-socket$(EXESUF): tests/test-io-channel-socket.o \
tests/io-channel-helpers.o $(test-io-obj-y)
tests/tpm-crb-test$(EXESUF): tests/tpm-crb-test.o tests/tpm-emu.o $(test-io-obj-y)
tests/tpm-tis-test$(EXESUF): tests/tpm-tis-test.o tests/tpm-emu.o $(test-io-obj-y)
tests/test-io-channel-file$(EXESUF): tests/test-io-channel-file.o \
tests/io-channel-helpers.o $(test-io-obj-y)
tests/test-io-channel-tls$(EXESUF): tests/test-io-channel-tls.o \

7
tests/tpm-emu.c
View file

@ -155,6 +155,13 @@ void *tpm_emu_ctrl_thread(void *data)
qio_channel_write(ioc, (char *)&loc, sizeof(loc), &error_abort);
break;
}
case CMD_GET_TPMESTABLISHED: {
ptm_est est = {
.u.resp.bit = 0,
};
qio_channel_write(ioc, (char *)&est, sizeof(est), &error_abort);
break;
}
default:
g_debug("unimplemented %u", cmd);
g_assert_not_reached();

486
tests/tpm-tis-test.c Normal file
View file

@ -0,0 +1,486 @@
/*
* QTest testcase for TPM TIS
*
* Copyright (c) 2018 Red Hat, Inc.
* Copyright (c) 2018 IBM Corporation
*
* Authors:
* Marc-André Lureau <marcandre.lureau@redhat.com>
* Stefan Berger <stefanb@linux.vnet.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include <glib/gstdio.h>
#include "hw/acpi/tpm.h"
#include "io/channel-socket.h"
#include "libqtest.h"
#include "tpm-emu.h"
#define TIS_REG(LOCTY, REG) \
(TPM_TIS_ADDR_BASE + ((LOCTY) << 12) + REG)
#define DEBUG_TIS_TEST 0
#define DPRINTF(fmt, ...) do { \
if (DEBUG_TIS_TEST) { \
printf(fmt, ## __VA_ARGS__); \
} \
} while (0)
#define DPRINTF_ACCESS \
DPRINTF("%s: %d: locty=%d l=%d access=0x%02x pending_request_flag=0x%x\n", \
__func__, __LINE__, locty, l, access, pending_request_flag)
#define DPRINTF_STS \
DPRINTF("%s: %d: sts = 0x%08x\n", __func__, __LINE__, sts)
static const uint8_t TPM_CMD[12] =
"\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00";
static void tpm_tis_test_check_localities(const void *data)
{
uint8_t locty;
uint8_t access;
uint32_t ifaceid;
uint32_t capability;
uint32_t didvid;
uint32_t rid;
for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES; locty++) {
access = readb(TIS_REG(0, TPM_TIS_REG_ACCESS));
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
capability = readl(TIS_REG(locty, TPM_TIS_REG_INTF_CAPABILITY));
g_assert_cmpint(capability, ==, TPM_TIS_CAPABILITIES_SUPPORTED2_0);
ifaceid = readl(TIS_REG(locty, TPM_TIS_REG_INTERFACE_ID));
g_assert_cmpint(ifaceid, ==, TPM_TIS_IFACE_ID_SUPPORTED_FLAGS2_0);
didvid = readl(TIS_REG(locty, TPM_TIS_REG_DID_VID));
g_assert_cmpint(didvid, !=, 0);
g_assert_cmpint(didvid, !=, 0xffffffff);
rid = readl(TIS_REG(locty, TPM_TIS_REG_RID));
g_assert_cmpint(rid, !=, 0);
g_assert_cmpint(rid, !=, 0xffffffff);
}
}
static void tpm_tis_test_check_access_reg(const void *data)
{
uint8_t locty;
uint8_t access;
/* do not test locality 4 (hw only) */
for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES - 1; locty++) {
access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* request use of locality */
writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_ACTIVE_LOCALITY |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* release access */
writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS),
TPM_TIS_ACCESS_ACTIVE_LOCALITY);
access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
}
}
/*
* Test case for seizing access by a higher number locality
*/
static void tpm_tis_test_check_access_reg_seize(const void *data)
{
int locty, l;
uint8_t access;
uint8_t pending_request_flag;
/* do not test locality 4 (hw only) */
for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES - 1; locty++) {
pending_request_flag = 0;
access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* request use of locality */
writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_ACTIVE_LOCALITY |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* lower localities cannot seize access */
for (l = 0; l < locty; l++) {
/* lower locality is not active */
access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
pending_request_flag |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* try to request use from 'l' */
writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
/* requesting use from 'l' was not possible;
we must see REQUEST_USE and possibly PENDING_REQUEST */
access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_REQUEST_USE |
pending_request_flag |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* locality 'locty' must be unchanged;
we must see PENDING_REQUEST */
access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_ACTIVE_LOCALITY |
TPM_TIS_ACCESS_PENDING_REQUEST |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* try to seize from 'l' */
writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_SEIZE);
/* seize from 'l' was not possible */
access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_REQUEST_USE |
pending_request_flag |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* locality 'locty' must be unchanged */
access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_ACTIVE_LOCALITY |
TPM_TIS_ACCESS_PENDING_REQUEST |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* on the next loop we will have a PENDING_REQUEST flag
set for locality 'l' */
pending_request_flag = TPM_TIS_ACCESS_PENDING_REQUEST;
}
/* higher localities can 'seize' access but not 'request use';
note: this will activate first l+1, then l+2 etc. */
for (l = locty + 1; l < TPM_TIS_NUM_LOCALITIES - 1; l++) {
/* try to 'request use' from 'l' */
writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
/* requesting use from 'l' was not possible; we should see
REQUEST_USE and may see PENDING_REQUEST */
access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_REQUEST_USE |
pending_request_flag |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* locality 'l-1' must be unchanged; we should always
see PENDING_REQUEST from 'l' requesting access */
access = readb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_ACTIVE_LOCALITY |
TPM_TIS_ACCESS_PENDING_REQUEST |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* try to seize from 'l' */
writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_SEIZE);
/* seize from 'l' was possible */
access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_ACTIVE_LOCALITY |
pending_request_flag |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* l - 1 should show that it has BEEN_SEIZED */
access = readb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_BEEN_SEIZED |
pending_request_flag |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* clear the BEEN_SEIZED flag and make sure it's gone */
writeb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS),
TPM_TIS_ACCESS_BEEN_SEIZED);
access = readb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS));
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
pending_request_flag |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
}
/* PENDING_REQUEST will not be set if locty = 0 since all localities
were active; in case of locty = 1, locality 0 will be active
but no PENDING_REQUEST anywhere */
if (locty <= 1) {
pending_request_flag = 0;
}
/* release access from l - 1; this activates locty - 1 */
l--;
access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
DPRINTF("%s: %d: relinquishing control on l = %d\n",
__func__, __LINE__, l);
writeb(TIS_REG(l, TPM_TIS_REG_ACCESS),
TPM_TIS_ACCESS_ACTIVE_LOCALITY);
access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
pending_request_flag |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
for (l = locty - 1; l >= 0; l--) {
access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_ACTIVE_LOCALITY |
pending_request_flag |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* release this locality */
writeb(TIS_REG(l, TPM_TIS_REG_ACCESS),
TPM_TIS_ACCESS_ACTIVE_LOCALITY);
if (l == 1) {
pending_request_flag = 0;
}
}
/* no locality may be active now */
for (l = 0; l < TPM_TIS_NUM_LOCALITIES - 1; l++) {
access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
}
}
}
/*
* Test case for getting access when higher number locality relinquishes access
*/
static void tpm_tis_test_check_access_reg_release(const void *data)
{
int locty, l;
uint8_t access;
uint8_t pending_request_flag;
/* do not test locality 4 (hw only) */
for (locty = TPM_TIS_NUM_LOCALITIES - 2; locty >= 0; locty--) {
pending_request_flag = 0;
access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* request use of locality */
writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_ACTIVE_LOCALITY |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* request use of all other localities */
for (l = 0; l < TPM_TIS_NUM_LOCALITIES - 1; l++) {
if (l == locty) {
continue;
}
/* request use of locality 'l' -- we MUST see REQUEST USE and
may see PENDING_REQUEST */
writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_REQUEST_USE |
pending_request_flag |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
pending_request_flag = TPM_TIS_ACCESS_PENDING_REQUEST;
}
/* release locality 'locty' */
writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS),
TPM_TIS_ACCESS_ACTIVE_LOCALITY);
/* highest locality should now be active; release it and make sure the
next higest locality is active afterwards */
for (l = TPM_TIS_NUM_LOCALITIES - 2; l >= 0; l--) {
if (l == locty) {
continue;
}
/* 'l' should be active now */
access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_ACTIVE_LOCALITY |
pending_request_flag |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* 'l' relinquishes access */
writeb(TIS_REG(l, TPM_TIS_REG_ACCESS),
TPM_TIS_ACCESS_ACTIVE_LOCALITY);
access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
DPRINTF_ACCESS;
if (l == 1 || (locty <= 1 && l == 2)) {
pending_request_flag = 0;
}
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
pending_request_flag |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
}
}
}
/*
* Test case for transmitting packets
*/
static void tpm_tis_test_check_transmit(const void *data)
{
const TestState *s = data;
uint8_t access;
uint32_t sts;
uint16_t bcount;
size_t i;
/* request use of locality 0 */
writeb(TIS_REG(0, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
access = readb(TIS_REG(0, TPM_TIS_REG_ACCESS));
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_ACTIVE_LOCALITY |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
DPRINTF_STS;
g_assert_cmpint(sts & 0xff, ==, 0);
g_assert_cmpint(sts & TPM_TIS_STS_TPM_FAMILY_MASK, ==,
TPM_TIS_STS_TPM_FAMILY2_0);
bcount = (sts >> 8) & 0xffff;
g_assert_cmpint(bcount, >=, 128);
writel(TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_COMMAND_READY);
sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
DPRINTF_STS;
g_assert_cmpint(sts & 0xff, ==, TPM_TIS_STS_COMMAND_READY);
/* transmit command */
for (i = 0; i < sizeof(TPM_CMD); i++) {
writeb(TIS_REG(0, TPM_TIS_REG_DATA_FIFO), TPM_CMD[i]);
sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
DPRINTF_STS;
if (i < sizeof(TPM_CMD) - 1) {
g_assert_cmpint(sts & 0xff, ==,
TPM_TIS_STS_EXPECT | TPM_TIS_STS_VALID);
} else {
g_assert_cmpint(sts & 0xff, ==, TPM_TIS_STS_VALID);
}
g_assert_cmpint((sts >> 8) & 0xffff, ==, --bcount);
}
/* start processing */
writeb(TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_TPM_GO);
uint64_t end_time = g_get_monotonic_time() + 50 * G_TIME_SPAN_SECOND;
do {
sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
if ((sts & TPM_TIS_STS_DATA_AVAILABLE) != 0) {
break;
}
} while (g_get_monotonic_time() < end_time);
sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
DPRINTF_STS;
g_assert_cmpint(sts & 0xff, == ,
TPM_TIS_STS_VALID | TPM_TIS_STS_DATA_AVAILABLE);
bcount = (sts >> 8) & 0xffff;
/* read response */
uint8_t tpm_msg[sizeof(struct tpm_hdr)];
g_assert_cmpint(sizeof(tpm_msg), ==, bcount);
for (i = 0; i < sizeof(tpm_msg); i++) {
tpm_msg[i] = readb(TIS_REG(0, TPM_TIS_REG_DATA_FIFO));
sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
DPRINTF_STS;
if (sts & TPM_TIS_STS_DATA_AVAILABLE) {
g_assert_cmpint((sts >> 8) & 0xffff, ==, --bcount);
}
}
g_assert_cmpmem(tpm_msg, sizeof(tpm_msg), s->tpm_msg, sizeof(*s->tpm_msg));
/* relinquish use of locality 0 */
writeb(TIS_REG(0, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_ACTIVE_LOCALITY);
access = readb(TIS_REG(0, TPM_TIS_REG_ACCESS));
}
int main(int argc, char **argv)
{
int ret;
char *args, *tmp_path = g_dir_make_tmp("qemu-tpm-tis-test.XXXXXX", NULL);
GThread *thread;
TestState test;
module_call_init(MODULE_INIT_QOM);
g_test_init(&argc, &argv, NULL);
test.addr = g_new0(SocketAddress, 1);
test.addr->type = SOCKET_ADDRESS_TYPE_UNIX;
test.addr->u.q_unix.path = g_build_filename(tmp_path, "sock", NULL);
g_mutex_init(&test.data_mutex);
g_cond_init(&test.data_cond);
thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test);
tpm_emu_test_wait_cond(&test);
args = g_strdup_printf(
"-chardev socket,id=chr,path=%s "
"-tpmdev emulator,id=dev,chardev=chr "
"-device tpm-tis,tpmdev=dev",
test.addr->u.q_unix.path);
qtest_start(args);
qtest_add_data_func("/tpm-tis/test_check_localities", &test,
tpm_tis_test_check_localities);
qtest_add_data_func("/tpm-tis/test_check_access_reg", &test,
tpm_tis_test_check_access_reg);
qtest_add_data_func("/tpm-tis/test_check_access_reg_seize", &test,
tpm_tis_test_check_access_reg_seize);
qtest_add_data_func("/tpm-tis/test_check_access_reg_release", &test,
tpm_tis_test_check_access_reg_release);
qtest_add_data_func("/tpm-tis/test_check_transmit", &test,
tpm_tis_test_check_transmit);
ret = g_test_run();
qtest_end();
g_thread_join(thread);
g_unlink(test.addr->u.q_unix.path);
qapi_free_SocketAddress(test.addr);
g_rmdir(tmp_path);
g_free(tmp_path);
g_free(args);
return ret;
}