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FRET-qemu/tests/qtest/tpm-tis-i2c-test.c
Michael Tokarev 96420a30e0 tests/: spelling fixes 
with some rewording in
 tests/qemu-iotests/298
 tests/qtest/fuzz/generic_fuzz.c
 tests/unit/test-throttle.c
as suggested by Eric.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Eric Blake <eblake@redhat.com>
2023-09-08 13:08:52 +03:00

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/*
* QTest testcases for TPM TIS on I2C (derived from TPM TIS test)
*
* Copyright (c) 2023 IBM Corporation
* Copyright (c) 2023 Red Hat, Inc.
*
* Authors:
* Stefan Berger <stefanb@linux.ibm.com>
* Marc-André Lureau <marcandre.lureau@redhat.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 "libqtest-single.h"
#include "hw/acpi/tpm.h"
#include "hw/pci/pci_ids.h"
#include "qtest_aspeed.h"
#include "tpm-emu.h"
#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)
#define I2C_SLAVE_ADDR 0x2e
#define I2C_DEV_BUS_NUM 10
static const uint8_t TPM_CMD[12] =
"\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00";
static uint32_t aspeed_bus_addr;
static uint8_t cur_locty = 0xff;
static void tpm_tis_i2c_set_locty(uint8_t locty)
{
if (cur_locty != locty) {
cur_locty = locty;
aspeed_i2c_writeb(global_qtest, aspeed_bus_addr, I2C_SLAVE_ADDR,
TPM_I2C_REG_LOC_SEL, locty);
}
}
static uint8_t tpm_tis_i2c_readb(uint8_t locty, uint8_t reg)
{
tpm_tis_i2c_set_locty(locty);
return aspeed_i2c_readb(global_qtest, aspeed_bus_addr, I2C_SLAVE_ADDR, reg);
}
static uint16_t tpm_tis_i2c_readw(uint8_t locty, uint8_t reg)
{
tpm_tis_i2c_set_locty(locty);
return aspeed_i2c_readw(global_qtest, aspeed_bus_addr, I2C_SLAVE_ADDR, reg);
}
static uint32_t tpm_tis_i2c_readl(uint8_t locty, uint8_t reg)
{
tpm_tis_i2c_set_locty(locty);
return aspeed_i2c_readl(global_qtest, aspeed_bus_addr, I2C_SLAVE_ADDR, reg);
}
static void tpm_tis_i2c_writeb(uint8_t locty, uint8_t reg, uint8_t v)
{
if (reg != TPM_I2C_REG_LOC_SEL) {
tpm_tis_i2c_set_locty(locty);
}
aspeed_i2c_writeb(global_qtest, aspeed_bus_addr, I2C_SLAVE_ADDR, reg, v);
}
static void tpm_tis_i2c_writel(uint8_t locty, uint8_t reg, uint32_t v)
{
if (reg != TPM_I2C_REG_LOC_SEL) {
tpm_tis_i2c_set_locty(locty);
}
aspeed_i2c_writel(global_qtest, aspeed_bus_addr, I2C_SLAVE_ADDR, reg, v);
}
static void tpm_tis_i2c_test_basic(const void *data)
{
uint8_t access;
uint32_t v, v2;
/*
* All register accesses below must work without locality 0 being the
* active locality. Therefore, ensure access is released.
*/
tpm_tis_i2c_writeb(0, TPM_I2C_REG_ACCESS,
TPM_TIS_ACCESS_ACTIVE_LOCALITY);
access = tpm_tis_i2c_readb(0, TPM_I2C_REG_ACCESS);
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* read interrupt capability -- none are supported */
v = tpm_tis_i2c_readl(0, TPM_I2C_REG_INT_CAPABILITY);
g_assert_cmpint(v, ==, 0);
/* try to enable all interrupts */
tpm_tis_i2c_writel(0, TPM_I2C_REG_INT_ENABLE, 0xffffffff);
v = tpm_tis_i2c_readl(0, TPM_I2C_REG_INT_ENABLE);
/* none could be enabled */
g_assert_cmpint(v, ==, 0);
/* enable csum */
tpm_tis_i2c_writeb(0, TPM_I2C_REG_DATA_CSUM_ENABLE, TPM_DATA_CSUM_ENABLED);
/* check csum enable register has bit 0 set */
v = tpm_tis_i2c_readb(0, TPM_I2C_REG_DATA_CSUM_ENABLE);
g_assert_cmpint(v, ==, TPM_DATA_CSUM_ENABLED);
/* reading it as 32bit register returns same result */
v = tpm_tis_i2c_readl(0, TPM_I2C_REG_DATA_CSUM_ENABLE);
g_assert_cmpint(v, ==, TPM_DATA_CSUM_ENABLED);
/* disable csum */
tpm_tis_i2c_writeb(0, TPM_I2C_REG_DATA_CSUM_ENABLE, 0);
/* check csum enable register has bit 0 clear */
v = tpm_tis_i2c_readb(0, TPM_I2C_REG_DATA_CSUM_ENABLE);
g_assert_cmpint(v, ==, 0);
/* write to unsupported register '1' */
tpm_tis_i2c_writel(0, 1, 0x12345678);
v = tpm_tis_i2c_readl(0, 1);
g_assert_cmpint(v, ==, 0xffffffff);
/* request use of locality */
tpm_tis_i2c_writeb(0, TPM_I2C_REG_ACCESS, TPM_TIS_ACCESS_REQUEST_USE);
/* read byte from STS + 3 */
v = tpm_tis_i2c_readb(0, TPM_I2C_REG_STS + 3);
g_assert_cmpint(v, ==, 0);
/* check STS after writing to STS + 3 */
v = tpm_tis_i2c_readl(0, TPM_I2C_REG_STS);
tpm_tis_i2c_writeb(0, TPM_I2C_REG_STS + 3, 0xf);
v2 = tpm_tis_i2c_readl(0, TPM_I2C_REG_STS);
g_assert_cmpint(v, ==, v2);
/* release access */
tpm_tis_i2c_writeb(0, TPM_I2C_REG_ACCESS,
TPM_TIS_ACCESS_ACTIVE_LOCALITY);
/* select locality 5 -- must not be possible */
tpm_tis_i2c_writeb(0, TPM_I2C_REG_LOC_SEL, 5);
v = tpm_tis_i2c_readb(0, TPM_I2C_REG_LOC_SEL);
g_assert_cmpint(v, ==, 0);
}
static void tpm_tis_i2c_test_check_localities(const void *data)
{
uint8_t locty, l;
uint8_t access;
uint32_t capability, i2c_cap;
uint32_t didvid;
uint32_t rid;
for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES; locty++) {
access = tpm_tis_i2c_readb(locty, TPM_I2C_REG_ACCESS);
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
capability = tpm_tis_i2c_readl(locty, TPM_I2C_REG_INTF_CAPABILITY);
i2c_cap = (TPM_I2C_CAP_INTERFACE_TYPE |
TPM_I2C_CAP_INTERFACE_VER |
TPM_I2C_CAP_TPM2_FAMILY |
TPM_I2C_CAP_LOCALITY_CAP |
TPM_I2C_CAP_BUS_SPEED |
TPM_I2C_CAP_DEV_ADDR_CHANGE);
g_assert_cmpint(capability, ==, i2c_cap);
didvid = tpm_tis_i2c_readl(locty, TPM_I2C_REG_DID_VID);
g_assert_cmpint(didvid, ==, (1 << 16) | PCI_VENDOR_ID_IBM);
rid = tpm_tis_i2c_readl(locty, TPM_I2C_REG_RID);
g_assert_cmpint(rid, !=, 0);
g_assert_cmpint(rid, !=, 0xffffffff);
/* locality selection must be at locty */
l = tpm_tis_i2c_readb(locty, TPM_I2C_REG_LOC_SEL);
g_assert_cmpint(l, ==, locty);
}
}
static void tpm_tis_i2c_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 = tpm_tis_i2c_readb(locty, TPM_I2C_REG_ACCESS);
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* request use of locality */
tpm_tis_i2c_writeb(locty, TPM_I2C_REG_ACCESS,
TPM_TIS_ACCESS_REQUEST_USE);
access = tpm_tis_i2c_readb(locty, TPM_I2C_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 */
tpm_tis_i2c_writeb(locty, TPM_I2C_REG_ACCESS,
TPM_TIS_ACCESS_ACTIVE_LOCALITY);
access = tpm_tis_i2c_readb(locty, TPM_I2C_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_i2c_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 = tpm_tis_i2c_readb(locty, TPM_I2C_REG_ACCESS);
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* request use of locality */
tpm_tis_i2c_writeb(locty,
TPM_I2C_REG_ACCESS, TPM_TIS_ACCESS_REQUEST_USE);
access = tpm_tis_i2c_readb(locty, TPM_I2C_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 = tpm_tis_i2c_readb(l, TPM_I2C_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' */
tpm_tis_i2c_writeb(l,
TPM_I2C_REG_ACCESS,
TPM_TIS_ACCESS_REQUEST_USE);
/*
* requesting use from 'l' was not possible;
* we must see REQUEST_USE and possibly PENDING_REQUEST
*/
access = tpm_tis_i2c_readb(l, TPM_I2C_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 = tpm_tis_i2c_readb(locty, TPM_I2C_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' */
tpm_tis_i2c_writeb(l,
TPM_I2C_REG_ACCESS, TPM_TIS_ACCESS_SEIZE);
/* seize from 'l' was not possible */
access = tpm_tis_i2c_readb(l, TPM_I2C_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 = tpm_tis_i2c_readb(locty, TPM_I2C_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' */
tpm_tis_i2c_writeb(l, TPM_I2C_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 = tpm_tis_i2c_readb(l, TPM_I2C_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 = tpm_tis_i2c_readb(l - 1, TPM_I2C_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' */
tpm_tis_i2c_writeb(l, TPM_I2C_REG_ACCESS, TPM_TIS_ACCESS_SEIZE);
/* seize from 'l' was possible */
access = tpm_tis_i2c_readb(l, TPM_I2C_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 = tpm_tis_i2c_readb(l - 1, TPM_I2C_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 */
tpm_tis_i2c_writeb(l - 1, TPM_I2C_REG_ACCESS,
TPM_TIS_ACCESS_BEEN_SEIZED);
access = tpm_tis_i2c_readb(l - 1, TPM_I2C_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 = tpm_tis_i2c_readb(l, TPM_I2C_REG_ACCESS);
DPRINTF_ACCESS;
DPRINTF("%s: %d: relinquishing control on l = %d\n",
__func__, __LINE__, l);
tpm_tis_i2c_writeb(l, TPM_I2C_REG_ACCESS,
TPM_TIS_ACCESS_ACTIVE_LOCALITY);
access = tpm_tis_i2c_readb(l, TPM_I2C_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 = tpm_tis_i2c_readb(l, TPM_I2C_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 */
tpm_tis_i2c_writeb(l, TPM_I2C_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 = tpm_tis_i2c_readb(l, TPM_I2C_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_i2c_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 = tpm_tis_i2c_readb(locty, TPM_I2C_REG_ACCESS);
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
/* request use of locality */
tpm_tis_i2c_writeb(locty, TPM_I2C_REG_ACCESS,
TPM_TIS_ACCESS_REQUEST_USE);
access = tpm_tis_i2c_readb(locty, TPM_I2C_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
*/
tpm_tis_i2c_writeb(l, TPM_I2C_REG_ACCESS,
TPM_TIS_ACCESS_REQUEST_USE);
access = tpm_tis_i2c_readb(l, TPM_I2C_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' */
tpm_tis_i2c_writeb(locty, TPM_I2C_REG_ACCESS,
TPM_TIS_ACCESS_ACTIVE_LOCALITY);
/*
* highest locality should now be active; release it and make sure the
* next highest locality is active afterwards
*/
for (l = TPM_TIS_NUM_LOCALITIES - 2; l >= 0; l--) {
if (l == locty) {
continue;
}
/* 'l' should be active now */
access = tpm_tis_i2c_readb(l, TPM_I2C_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 */
tpm_tis_i2c_writeb(l, TPM_I2C_REG_ACCESS,
TPM_TIS_ACCESS_ACTIVE_LOCALITY);
access = tpm_tis_i2c_readb(l, TPM_I2C_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_i2c_test_check_transmit(const void *data)
{
const TPMTestState *s = data;
uint8_t access;
uint32_t sts, v;
uint16_t bcount, csum, bcount2;
size_t i;
/* enable csum */
tpm_tis_i2c_writeb(0, TPM_I2C_REG_DATA_CSUM_ENABLE, TPM_DATA_CSUM_ENABLED);
/* check csum enable register has bit 0 set */
v = tpm_tis_i2c_readb(0, TPM_I2C_REG_DATA_CSUM_ENABLE);
g_assert_cmpint(v, ==, TPM_DATA_CSUM_ENABLED);
/* reading it as 32bit register returns same result */
v = tpm_tis_i2c_readl(0, TPM_I2C_REG_DATA_CSUM_ENABLE);
g_assert_cmpint(v, ==, TPM_DATA_CSUM_ENABLED);
/* request use of locality 0 */
tpm_tis_i2c_writeb(0, TPM_I2C_REG_ACCESS, TPM_TIS_ACCESS_REQUEST_USE);
access = tpm_tis_i2c_readb(0, TPM_I2C_REG_ACCESS);
g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
TPM_TIS_ACCESS_ACTIVE_LOCALITY |
TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
sts = tpm_tis_i2c_readl(0, TPM_I2C_REG_STS);
DPRINTF_STS;
g_assert_cmpint(sts & 0xff, ==, 0);
bcount = (sts >> 8) & 0xffff;
g_assert_cmpint(bcount, >=, 128);
/* read bcount from STS + 1 must work also */
bcount2 = tpm_tis_i2c_readw(0, TPM_I2C_REG_STS + 1);
g_assert_cmpint(bcount, ==, bcount2);
/* ic2 must have bits 26-31 zero */
g_assert_cmpint(sts & (0x1f << 26), ==, 0);
tpm_tis_i2c_writel(0, TPM_I2C_REG_STS, TPM_TIS_STS_COMMAND_READY);
sts = tpm_tis_i2c_readl(0, TPM_I2C_REG_STS);
DPRINTF_STS;
g_assert_cmpint(sts & 0xff, ==, TPM_TIS_STS_COMMAND_READY);
/* transmit command */
for (i = 0; i < sizeof(TPM_CMD); i++) {
tpm_tis_i2c_writeb(0, TPM_I2C_REG_DATA_FIFO, TPM_CMD[i]);
sts = tpm_tis_i2c_readl(0, TPM_I2C_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);
}
/* read the checksum */
csum = tpm_tis_i2c_readw(0, TPM_I2C_REG_DATA_CSUM_GET);
g_assert_cmpint(csum, ==, 0x6733);
/* start processing */
tpm_tis_i2c_writeb(0, TPM_I2C_REG_STS, TPM_TIS_STS_TPM_GO);
uint64_t end_time = g_get_monotonic_time() + 50 * G_TIME_SPAN_SECOND;
do {
sts = tpm_tis_i2c_readl(0, TPM_I2C_REG_STS);
if ((sts & TPM_TIS_STS_DATA_AVAILABLE) != 0) {
break;
}
} while (g_get_monotonic_time() < end_time);
sts = tpm_tis_i2c_readl(0, TPM_I2C_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] = tpm_tis_i2c_readb(0, TPM_I2C_REG_DATA_FIFO);
sts = tpm_tis_i2c_readl(0, TPM_I2C_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 */
tpm_tis_i2c_writeb(0,
TPM_I2C_REG_ACCESS, TPM_TIS_ACCESS_ACTIVE_LOCALITY);
access = tpm_tis_i2c_readb(0, TPM_I2C_REG_ACCESS);
}
int main(int argc, char **argv)
{
int ret;
char *args;
char *tmp_path = g_dir_make_tmp("qemu-tpm-tis-i2c-test.XXXXXX", NULL);
GThread *thread;
TPMTestState 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);
test.data_cond_signal = false;
test.tpm_version = TPM_VERSION_2_0;
thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test);
tpm_emu_test_wait_cond(&test);
aspeed_bus_addr = ast2600_i2c_calc_bus_addr(I2C_DEV_BUS_NUM);
args = g_strdup_printf(
"-machine rainier-bmc -accel tcg "
"-chardev socket,id=chr,path=%s "
"-tpmdev emulator,id=tpm0,chardev=chr "
"-device tpm-tis-i2c,tpmdev=tpm0,bus=aspeed.i2c.bus.%d,address=0x%x",
test.addr->u.q_unix.path,
I2C_DEV_BUS_NUM,
I2C_SLAVE_ADDR);
qtest_start(args);
qtest_add_data_func("/tpm-tis-i2c/test_basic", &test,
tpm_tis_i2c_test_basic);
qtest_add_data_func("/tpm-tis-i2c/test_check_localities", &test,
tpm_tis_i2c_test_check_localities);
qtest_add_data_func("/tpm-tis-i2c/check_access_reg", &test,
tpm_tis_i2c_test_check_access_reg);
qtest_add_data_func("/tpm-tis-i2c/check_access_reg_seize", &test,
tpm_tis_i2c_test_check_access_reg_seize);
qtest_add_data_func("/tpm-tis-i2c/check_access_reg_release", &test,
tpm_tis_i2c_test_check_access_reg_release);
qtest_add_data_func("/tpm-tis-i2c/test_check_transmit", &test,
tpm_tis_i2c_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;
}
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