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qemu-e2k/tests/tpm-crb-test.c

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/*
* QTest testcase for TPM CRB
*
* Copyright (c) 2018 Red Hat, Inc.
*
* Authors:
* 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 "hw/acpi/tpm.h"
#include "hw/tpm/tpm_ioctl.h"
#include "io/channel-socket.h"
#include "libqtest.h"
#include "qapi/error.h"
#define TPM_RC_FAILURE 0x101
#define TPM2_ST_NO_SESSIONS 0x8001
struct tpm_hdr {
uint16_t tag;
uint32_t len;
uint32_t code; /*ordinal/error */
char buffer[];
} QEMU_PACKED;
typedef struct TestState {
CompatGMutex data_mutex;
CompatGCond data_cond;
SocketAddress *addr;
QIOChannel *tpm_ioc;
GThread *emu_tpm_thread;
struct tpm_hdr *tpm_msg;
} TestState;
static void test_wait_cond(TestState *s)
{
gint64 end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
g_mutex_lock(&s->data_mutex);
if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) {
g_assert_not_reached();
}
g_mutex_unlock(&s->data_mutex);
}
static void *emu_tpm_thread(void *data)
{
TestState *s = data;
QIOChannel *ioc = s->tpm_ioc;
s->tpm_msg = g_new(struct tpm_hdr, 1);
while (true) {
int minhlen = sizeof(s->tpm_msg->tag) + sizeof(s->tpm_msg->len);
if (!qio_channel_read(ioc, (char *)s->tpm_msg, minhlen, &error_abort)) {
break;
}
s->tpm_msg->tag = be16_to_cpu(s->tpm_msg->tag);
s->tpm_msg->len = be32_to_cpu(s->tpm_msg->len);
g_assert_cmpint(s->tpm_msg->len, >=, minhlen);
g_assert_cmpint(s->tpm_msg->tag, ==, TPM2_ST_NO_SESSIONS);
s->tpm_msg = g_realloc(s->tpm_msg, s->tpm_msg->len);
qio_channel_read(ioc, (char *)&s->tpm_msg->code,
s->tpm_msg->len - minhlen, &error_abort);
s->tpm_msg->code = be32_to_cpu(s->tpm_msg->code);
/* reply error */
s->tpm_msg->tag = cpu_to_be16(TPM2_ST_NO_SESSIONS);
s->tpm_msg->len = cpu_to_be32(sizeof(struct tpm_hdr));
s->tpm_msg->code = cpu_to_be32(TPM_RC_FAILURE);
qio_channel_write(ioc, (char *)s->tpm_msg, be32_to_cpu(s->tpm_msg->len),
&error_abort);
}
g_free(s->tpm_msg);
s->tpm_msg = NULL;
object_unref(OBJECT(s->tpm_ioc));
return NULL;
}
static void *emu_ctrl_thread(void *data)
{
TestState *s = data;
QIOChannelSocket *lioc = qio_channel_socket_new();
QIOChannel *ioc;
qio_channel_socket_listen_sync(lioc, s->addr, &error_abort);
g_cond_signal(&s->data_cond);
qio_channel_wait(QIO_CHANNEL(lioc), G_IO_IN);
ioc = QIO_CHANNEL(qio_channel_socket_accept(lioc, &error_abort));
g_assert(ioc);
{
uint32_t cmd = 0;
struct iovec iov = { .iov_base = &cmd, .iov_len = sizeof(cmd) };
int *pfd = NULL;
size_t nfd = 0;
qio_channel_readv_full(ioc, &iov, 1, &pfd, &nfd, &error_abort);
cmd = be32_to_cpu(cmd);
g_assert_cmpint(cmd, ==, CMD_SET_DATAFD);
g_assert_cmpint(nfd, ==, 1);
s->tpm_ioc = QIO_CHANNEL(qio_channel_socket_new_fd(*pfd, &error_abort));
g_free(pfd);
cmd = 0;
qio_channel_write(ioc, (char *)&cmd, sizeof(cmd), &error_abort);
s->emu_tpm_thread = g_thread_new(NULL, emu_tpm_thread, s);
}
while (true) {
uint32_t cmd;
ssize_t ret;
ret = qio_channel_read(ioc, (char *)&cmd, sizeof(cmd), NULL);
if (ret <= 0) {
break;
}
cmd = be32_to_cpu(cmd);
switch (cmd) {
case CMD_GET_CAPABILITY: {
ptm_cap cap = cpu_to_be64(0x3fff);
qio_channel_write(ioc, (char *)&cap, sizeof(cap), &error_abort);
break;
}
case CMD_INIT: {
ptm_init init;
qio_channel_read(ioc, (char *)&init.u.req, sizeof(init.u.req),
&error_abort);
init.u.resp.tpm_result = 0;
qio_channel_write(ioc, (char *)&init.u.resp, sizeof(init.u.resp),
&error_abort);
break;
}
case CMD_SHUTDOWN: {
ptm_res res = 0;
qio_channel_write(ioc, (char *)&res, sizeof(res), &error_abort);
qio_channel_close(s->tpm_ioc, &error_abort);
g_thread_join(s->emu_tpm_thread);
break;
}
case CMD_STOP: {
ptm_res res = 0;
qio_channel_write(ioc, (char *)&res, sizeof(res), &error_abort);
break;
}
case CMD_SET_BUFFERSIZE: {
ptm_setbuffersize sbs;
qio_channel_read(ioc, (char *)&sbs.u.req, sizeof(sbs.u.req),
&error_abort);
sbs.u.resp.buffersize = sbs.u.req.buffersize ?: cpu_to_be32(4096);
sbs.u.resp.tpm_result = 0;
sbs.u.resp.minsize = cpu_to_be32(128);
sbs.u.resp.maxsize = cpu_to_be32(4096);
qio_channel_write(ioc, (char *)&sbs.u.resp, sizeof(sbs.u.resp),
&error_abort);
break;
}
case CMD_SET_LOCALITY: {
ptm_loc loc;
/* Note: this time it's not u.req / u.resp... */
qio_channel_read(ioc, (char *)&loc, sizeof(loc), &error_abort);
g_assert_cmpint(loc.u.req.loc, ==, 0);
loc.u.resp.tpm_result = 0;
qio_channel_write(ioc, (char *)&loc, sizeof(loc), &error_abort);
break;
}
default:
g_debug("unimplemented %u", cmd);
g_assert_not_reached();
}
}
object_unref(OBJECT(ioc));
object_unref(OBJECT(lioc));
return NULL;
}
#define TPM_CMD "\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00"
static void tpm_crb_test(const void *data)
{
const TestState *s = data;
uint32_t intfid = readl(TPM_CRB_ADDR_BASE + A_CRB_INTF_ID);
uint32_t csize = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_SIZE);
uint64_t caddr = readq(TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_LADDR);
uint32_t rsize = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_SIZE);
uint64_t raddr = readq(TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_ADDR);
g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceType), ==, 1);
g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceVersion), ==, 1);
g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapLocality), ==, 0);
g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRBIdleBypass), ==, 0);
g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapDataXferSizeSupport),
==, 3);
g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapFIFO), ==, 0);
g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRB), ==, 1);
g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceSelector), ==, 1);
g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, RID), ==, 0);
g_assert_cmpint(csize, >=, 128);
g_assert_cmpint(rsize, >=, 128);
g_assert_cmpint(caddr, >, TPM_CRB_ADDR_BASE);
g_assert_cmpint(raddr, >, TPM_CRB_ADDR_BASE);
memwrite(caddr, TPM_CMD, sizeof(TPM_CMD));
uint32_t sts, start = 1;
uint64_t end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START, start);
do {
start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
if ((start & 1) == 0) {
break;
}
} while (g_get_monotonic_time() < end_time);
start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
g_assert_cmpint(start & 1, ==, 0);
sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
g_assert_cmpint(sts & 1, ==, 0);
struct tpm_hdr tpm_msg;
memread(raddr, &tpm_msg, sizeof(tpm_msg));
g_assert_cmpmem(&tpm_msg, sizeof(tpm_msg), s->tpm_msg, sizeof(*s->tpm_msg));
}
int main(int argc, char **argv)
{
int ret;
char *args, *tmp_path = g_dir_make_tmp("qemu-tpm-crb-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, emu_ctrl_thread, &test);
test_wait_cond(&test);
args = g_strdup_printf(
"-chardev socket,id=chr,path=%s "
"-tpmdev emulator,id=dev,chardev=chr "
"-device tpm-crb,tpmdev=dev",
test.addr->u.q_unix.path);
qtest_start(args);
qtest_add_data_func("/tpm-crb/test", &test, tpm_crb_test);
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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