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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 "io/channel-socket.h"
#include "libqtest-single.h"
#include "qemu/module.h"
#include "tpm-emu.h"
#define TPM_CMD "\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00"
static void tpm_crb_test(const void *data)
{
const TPMTestState *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);
uint8_t locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE);
uint32_t locctrl = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL);
uint32_t locsts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS);
uint32_t sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
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);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 0);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1);
g_assert_cmpint(locctrl, ==, 0);
g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, Granted), ==, 0);
g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, beenSeized), ==, 0);
g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 1);
g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
/* request access to locality 0 */
writeb(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 1);
/* granted bit must be set now */
locsts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS);
g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, Granted), ==, 1);
g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, beenSeized), ==, 0);
/* we must have an assigned locality */
locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 1);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1);
/* set into ready state */
writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ, 1);
/* TPM must not be in the idle state */
sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 0);
g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
memwrite(caddr, TPM_CMD, sizeof(TPM_CMD));
uint32_t 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);
/* TPM must still not be in the idle state */
sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 0);
g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 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));
/* set TPM into idle state */
writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ, 2);
/* idle state must be indicated now */
sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 1);
g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
/* relinquish locality */
writel(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 2);
/* Granted flag must be cleared */
sts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS);
g_assert_cmpint(FIELD_EX32(sts, CRB_LOC_STS, Granted), ==, 0);
g_assert_cmpint(FIELD_EX32(sts, CRB_LOC_STS, beenSeized), ==, 0);
/* no locality may be assigned */
locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 0);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0);
g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1);
}
int main(int argc, char **argv)
{
int ret;
char *args, *tmp_path = g_dir_make_tmp("qemu-tpm-crb-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);
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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