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 "qemu/module.h"
  20#include "tpm-emu.h"
  21
  22#define TPM_CMD "\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00"
  23
  24static void tpm_crb_test(const void *data)
  25{
  26    const TestState *s = data;
  27    uint32_t intfid = readl(TPM_CRB_ADDR_BASE + A_CRB_INTF_ID);
  28    uint32_t csize = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_SIZE);
  29    uint64_t caddr = readq(TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_LADDR);
  30    uint32_t rsize = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_SIZE);
  31    uint64_t raddr = readq(TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_ADDR);
  32    uint8_t locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE);
  33    uint32_t locctrl = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL);
  34    uint32_t locsts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS);
  35    uint32_t sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
  36
  37    g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceType), ==, 1);
  38    g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceVersion), ==, 1);
  39    g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapLocality), ==, 0);
  40    g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRBIdleBypass), ==, 0);
  41    g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapDataXferSizeSupport),
  42                    ==, 3);
  43    g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapFIFO), ==, 0);
  44    g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRB), ==, 1);
  45    g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceSelector), ==, 1);
  46    g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, RID), ==, 0);
  47
  48    g_assert_cmpint(csize, >=, 128);
  49    g_assert_cmpint(rsize, >=, 128);
  50    g_assert_cmpint(caddr, >, TPM_CRB_ADDR_BASE);
  51    g_assert_cmpint(raddr, >, TPM_CRB_ADDR_BASE);
  52
  53    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1);
  54    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 0);
  55    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0);
  56    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0);
  57    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1);
  58
  59    g_assert_cmpint(locctrl, ==, 0);
  60
  61    g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, Granted), ==, 0);
  62    g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, beenSeized), ==, 0);
  63
  64    g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 1);
  65    g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
  66
  67    /* request access to locality 0 */
  68    writeb(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 1);
  69
  70    /* granted bit must be set now */
  71    locsts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS);
  72    g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, Granted), ==, 1);
  73    g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, beenSeized), ==, 0);
  74
  75    /* we must have an assigned locality */
  76    locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE);
  77    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1);
  78    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 1);
  79    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0);
  80    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0);
  81    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1);
  82
  83    /* set into ready state */
  84    writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ, 1);
  85
  86    /* TPM must not be in the idle state */
  87    sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
  88    g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 0);
  89    g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
  90
  91    memwrite(caddr, TPM_CMD, sizeof(TPM_CMD));
  92
  93    uint32_t start = 1;
  94    uint64_t end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
  95    writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START, start);
  96    do {
  97        start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
  98        if ((start & 1) == 0) {
  99            break;
 100        }
 101    } while (g_get_monotonic_time() < end_time);
 102    start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
 103    g_assert_cmpint(start & 1, ==, 0);
 104
 105    /* TPM must still not be in the idle state */
 106    sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
 107    g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 0);
 108    g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
 109
 110    struct tpm_hdr tpm_msg;
 111    memread(raddr, &tpm_msg, sizeof(tpm_msg));
 112    g_assert_cmpmem(&tpm_msg, sizeof(tpm_msg), s->tpm_msg, sizeof(*s->tpm_msg));
 113
 114    /* set TPM into idle state */
 115    writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ, 2);
 116
 117    /* idle state must be indicated now */
 118    sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
 119    g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 1);
 120    g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
 121
 122    /* relinquish locality */
 123    writel(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 2);
 124
 125    /* Granted flag must be cleared */
 126    sts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS);
 127    g_assert_cmpint(FIELD_EX32(sts, CRB_LOC_STS, Granted), ==, 0);
 128    g_assert_cmpint(FIELD_EX32(sts, CRB_LOC_STS, beenSeized), ==, 0);
 129
 130    /* no locality may be assigned */
 131    locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE);
 132    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1);
 133    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 0);
 134    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0);
 135    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0);
 136    g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1);
 137
 138}
 139
 140int main(int argc, char **argv)
 141{
 142    int ret;
 143    char *args, *tmp_path = g_dir_make_tmp("qemu-tpm-crb-test.XXXXXX", NULL);
 144    GThread *thread;
 145    TestState test;
 146
 147    module_call_init(MODULE_INIT_QOM);
 148    g_test_init(&argc, &argv, NULL);
 149
 150    test.addr = g_new0(SocketAddress, 1);
 151    test.addr->type = SOCKET_ADDRESS_TYPE_UNIX;
 152    test.addr->u.q_unix.path = g_build_filename(tmp_path, "sock", NULL);
 153    g_mutex_init(&test.data_mutex);
 154    g_cond_init(&test.data_cond);
 155    test.data_cond_signal = false;
 156
 157    thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test);
 158    tpm_emu_test_wait_cond(&test);
 159
 160    args = g_strdup_printf(
 161        "-chardev socket,id=chr,path=%s "
 162        "-tpmdev emulator,id=dev,chardev=chr "
 163        "-device tpm-crb,tpmdev=dev",
 164        test.addr->u.q_unix.path);
 165    qtest_start(args);
 166
 167    qtest_add_data_func("/tpm-crb/test", &test, tpm_crb_test);
 168    ret = g_test_run();
 169
 170    qtest_end();
 171
 172    g_thread_join(thread);
 173    g_unlink(test.addr->u.q_unix.path);
 174    qapi_free_SocketAddress(test.addr);
 175    g_rmdir(tmp_path);
 176    g_free(tmp_path);
 177    g_free(args);
 178    return ret;
 179}
 180