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qemu/tests/qtest/tpm-crb-test.c
Eric Auger 5166c32617 test: tpm-tis: Get prepared to share tests between ISA and sysbus devices 
ISA and sysbus TPM-TIS devices will share their tests. Only
the main() will change (instantiation option is different).
Also the base address of the TPM-TIS device is going to be
different. on x86 it is located at 0xFED40000 while on ARM
it can be located at any location, discovered through the
device tree description.

So we put shared test functions in a new object module.
Each test needs to set tpm_tis_base_addr global variable.

Also take benefit of this move to fix "block comments using
a leading */ on a separate line" checkpatch warnings.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Message-id: 20200305165149.618-10-eric.auger@redhat.com
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
2020-03-05 12:18:39 -05:00

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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"
/* Not used but needed for linking */
uint64_t tpm_tis_base_addr = TPM_TIS_ADDR_BASE;
#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);
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;
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);
test.data_cond_signal = false;
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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