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     uint8_t locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE);
  32     uint32_t locctrl = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL);
  33     uint32_t locsts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS);
  34     uint32_t sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
  35
  36     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceType), ==, 1);
  37     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceVersion), ==, 1);
  38     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapLocality), ==, 0);
  39     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRBIdleBypass), ==, 0);
  40     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapDataXferSizeSupport),
  41                     ==, 3);
  42     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapFIFO), ==, 0);
  43     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRB), ==, 1);
  44     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceSelector), ==, 1);
  45     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, RID), ==, 0);
  46
  47     g_assert_cmpint(csize, >=, 128);
  48     g_assert_cmpint(rsize, >=, 128);
  49     g_assert_cmpint(caddr, >, TPM_CRB_ADDR_BASE);
  50     g_assert_cmpint(raddr, >, TPM_CRB_ADDR_BASE);
  51
  52     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1);
  53     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 0);
  54     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0);
  55     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0);
  56     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1);
  57
  58     g_assert_cmpint(locctrl, ==, 0);
  59
  60     g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, Granted), ==, 0);
  61     g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, beenSeized), ==, 0);
  62
  63     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 1);
  64     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
  65
  66     /* request access to locality 0 */
  67     writeb(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 1);
  68
  69     /* granted bit must be set now */
  70     locsts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS);
  71     g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, Granted), ==, 1);
  72     g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, beenSeized), ==, 0);
  73
  74     /* we must have an assigned locality */
  75     locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE);
  76     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1);
  77     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 1);
  78     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0);
  79     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0);
  80     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1);
  81
  82     /* set into ready state */
  83     writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ, 1);
  84
  85     /* TPM must not be in the idle state */
  86     sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
  87     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 0);
  88     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
  89
  90     memwrite(caddr, TPM_CMD, sizeof(TPM_CMD));
  91
  92     uint32_t start = 1;
  93     uint64_t end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
  94     writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START, start);
  95     do {
  96         start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
  97         if ((start & 1) == 0) {
  98             break;
  99         }
 100     } while (g_get_monotonic_time() < end_time);
 101     start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
 102     g_assert_cmpint(start & 1, ==, 0);
 103
 104     /* TPM must still not be in the idle state */
 105     sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
 106     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 0);
 107     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
 108
 109     struct tpm_hdr tpm_msg;
 110     memread(raddr, &tpm_msg, sizeof(tpm_msg));
 111     g_assert_cmpmem(&tpm_msg, sizeof(tpm_msg), s->tpm_msg, sizeof(*s->tpm_msg));
 112
 113     /* set TPM into idle state */
 114     writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ, 2);
 115
 116     /* idle state must be indicated now */
 117     sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
 118     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 1);
 119     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
 120
 121     /* relinquish locality */
 122     writel(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 2);
 123
 124     /* Granted flag must be cleared */
 125     sts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS);
 126     g_assert_cmpint(FIELD_EX32(sts, CRB_LOC_STS, Granted), ==, 0);
 127     g_assert_cmpint(FIELD_EX32(sts, CRB_LOC_STS, beenSeized), ==, 0);
 128
 129     /* no locality may be assigned */
 130     locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE);
 131     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1);
 132     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 0);
 133     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0);
 134     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0);
 135     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1);
 136
 137 }
 138
 139 int main(int argc, char **argv)
 140 {
 141     int ret;
 142     char *args, *tmp_path = g_dir_make_tmp("qemu-tpm-crb-test.XXXXXX", NULL);
 143     GThread *thread;
 144     TestState test;
 145
 146     module_call_init(MODULE_INIT_QOM);
 147     g_test_init(&argc, &argv, NULL);
 148
 149     test.addr = g_new0(SocketAddress, 1);
 150     test.addr->type = SOCKET_ADDRESS_TYPE_UNIX;
 151     test.addr->u.q_unix.path = g_build_filename(tmp_path, "sock", NULL);
 152     g_mutex_init(&test.data_mutex);
 153     g_cond_init(&test.data_cond);
 154
 155     thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test);
 156     tpm_emu_test_wait_cond(&test);
 157
 158     args = g_strdup_printf(
 159         "-chardev socket,id=chr,path=%s "
 160         "-tpmdev emulator,id=dev,chardev=chr "
 161         "-device tpm-crb,tpmdev=dev",
 162         test.addr->u.q_unix.path);
 163     qtest_start(args);
 164
 165     qtest_add_data_func("/tpm-crb/test", &test, tpm_crb_test);
 166     ret = g_test_run();
 167
 168     qtest_end();
 169
 170     g_thread_join(thread);
 171     g_unlink(test.addr->u.q_unix.path);
 172     qapi_free_SocketAddress(test.addr);
 173     g_rmdir(tmp_path);
 174     g_free(tmp_path);
 175     g_free(args);
 176     return ret;
 177 }