LXR qemu/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
  23static 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
 139int 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    test.data_cond_signal = false;
 155
 156    thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test);
 157    tpm_emu_test_wait_cond(&test);
 158
 159    args = g_strdup_printf(
 160        "-chardev socket,id=chr,path=%s "
 161        "-tpmdev emulator,id=dev,chardev=chr "
 162        "-device tpm-crb,tpmdev=dev",
 163        test.addr->u.q_unix.path);
 164    qtest_start(args);
 165
 166    qtest_add_data_func("/tpm-crb/test", &test, tpm_crb_test);
 167    ret = g_test_run();
 168
 169    qtest_end();
 170
 171    g_thread_join(thread);
 172    g_unlink(test.addr->u.q_unix.path);
 173    qapi_free_SocketAddress(test.addr);
 174    g_rmdir(tmp_path);
 175    g_free(tmp_path);
 176    g_free(args);
 177    return ret;
 178}
 179