tests/tpm-crb-test.c

   1 /*
   2  * QTest testcase for TPM CRB
   3  *
   4  * Copyright (c) 2018 Red Hat, Inc.
   5  *
   6  * Authors:
   7  *   Marc-André Lureau <marcandre.lureau@redhat.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12
  13 #include "qemu/osdep.h"
  14 #include <glib/gstdio.h>
  15
  16 #include "hw/acpi/tpm.h"
  17 #include "io/channel-socket.h"
  18 #include "libqtest.h"
  19 #include "tpm-emu.h"
  20
  21 #define TPM_CMD "\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00"
  22
  23 static void tpm_crb_test(const void *data)
  24 {
  25     const TestState *s = data;
  26     uint32_t intfid = readl(TPM_CRB_ADDR_BASE + A_CRB_INTF_ID);
  27     uint32_t csize = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_SIZE);
  28     uint64_t caddr = readq(TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_LADDR);
  29     uint32_t rsize = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_SIZE);
  30     uint64_t raddr = readq(TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_ADDR);
  31
  32     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceType), ==, 1);
  33     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceVersion), ==, 1);
  34     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapLocality), ==, 0);
  35     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRBIdleBypass), ==, 0);
  36     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapDataXferSizeSupport),
  37                     ==, 3);
  38     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapFIFO), ==, 0);
  39     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRB), ==, 1);
  40     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceSelector), ==, 1);
  41     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, RID), ==, 0);
  42
  43     g_assert_cmpint(csize, >=, 128);
  44     g_assert_cmpint(rsize, >=, 128);
  45     g_assert_cmpint(caddr, >, TPM_CRB_ADDR_BASE);
  46     g_assert_cmpint(raddr, >, TPM_CRB_ADDR_BASE);
  47
  48     memwrite(caddr, TPM_CMD, sizeof(TPM_CMD));
  49
  50     uint32_t sts, start = 1;
  51     uint64_t end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
  52     writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START, start);
  53     do {
  54         start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
  55         if ((start & 1) == 0) {
  56             break;
  57         }
  58     } while (g_get_monotonic_time() < end_time);
  59     start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
  60     g_assert_cmpint(start & 1, ==, 0);
  61     sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
  62     g_assert_cmpint(sts & 1, ==, 0);
  63
  64     struct tpm_hdr tpm_msg;
  65     memread(raddr, &tpm_msg, sizeof(tpm_msg));
  66     g_assert_cmpmem(&tpm_msg, sizeof(tpm_msg), s->tpm_msg, sizeof(*s->tpm_msg));
  67 }
  68
  69 int main(int argc, char **argv)
  70 {
  71     int ret;
  72     char *args, *tmp_path = g_dir_make_tmp("qemu-tpm-crb-test.XXXXXX", NULL);
  73     GThread *thread;
  74     TestState test;
  75
  76     module_call_init(MODULE_INIT_QOM);
  77     g_test_init(&argc, &argv, NULL);
  78
  79     test.addr = g_new0(SocketAddress, 1);
  80     test.addr->type = SOCKET_ADDRESS_TYPE_UNIX;
  81     test.addr->u.q_unix.path = g_build_filename(tmp_path, "sock", NULL);
  82     g_mutex_init(&test.data_mutex);
  83     g_cond_init(&test.data_cond);
  84
  85     thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test);
  86     tpm_emu_test_wait_cond(&test);
  87
  88     args = g_strdup_printf(
  89         "-chardev socket,id=chr,path=%s "
  90         "-tpmdev emulator,id=dev,chardev=chr "
  91         "-device tpm-crb,tpmdev=dev",
  92         test.addr->u.q_unix.path);
  93     qtest_start(args);
  94
  95     qtest_add_data_func("/tpm-crb/test", &test, tpm_crb_test);
  96     ret = g_test_run();
  97
  98     qtest_end();
  99
 100     g_thread_join(thread);
 101     g_unlink(test.addr->u.q_unix.path);
 102     qapi_free_SocketAddress(test.addr);
 103     g_rmdir(tmp_path);
 104     g_free(tmp_path);
 105     g_free(args);
 106     return ret;
 107 }