tests/qtest/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-single.h"
  19 #include "qemu/module.h"
  20 #include "tpm-emu.h"
  21
  22 /* Not used but needed for linking */
  23 uint64_t tpm_tis_base_addr = TPM_TIS_ADDR_BASE;
  24
  25 #define TPM_CMD "\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00"
  26
  27 static void tpm_crb_test(const void *data)
  28 {
  29     const TPMTestState *s = data;
  30     uint32_t intfid = readl(TPM_CRB_ADDR_BASE + A_CRB_INTF_ID);
  31     uint32_t csize = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_SIZE);
  32     uint64_t caddr = readq(TPM_CRB_ADDR_BASE + A_CRB_CTRL_CMD_LADDR);
  33     uint32_t rsize = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_SIZE);
  34     uint64_t raddr = readq(TPM_CRB_ADDR_BASE + A_CRB_CTRL_RSP_ADDR);
  35     uint8_t locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE);
  36     uint32_t locctrl = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL);
  37     uint32_t locsts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS);
  38     uint32_t sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
  39
  40     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceType), ==, 1);
  41     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceVersion), ==, 1);
  42     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapLocality), ==, 0);
  43     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRBIdleBypass), ==, 0);
  44     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapDataXferSizeSupport),
  45                     ==, 3);
  46     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapFIFO), ==, 0);
  47     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, CapCRB), ==, 1);
  48     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, InterfaceSelector), ==, 1);
  49     g_assert_cmpint(FIELD_EX32(intfid, CRB_INTF_ID, RID), ==, 0);
  50
  51     g_assert_cmpint(csize, >=, 128);
  52     g_assert_cmpint(rsize, >=, 128);
  53     g_assert_cmpint(caddr, >, TPM_CRB_ADDR_BASE);
  54     g_assert_cmpint(raddr, >, TPM_CRB_ADDR_BASE);
  55
  56     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1);
  57     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 0);
  58     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0);
  59     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0);
  60     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1);
  61
  62     g_assert_cmpint(locctrl, ==, 0);
  63
  64     g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, Granted), ==, 0);
  65     g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, beenSeized), ==, 0);
  66
  67     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 1);
  68     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
  69
  70     /* request access to locality 0 */
  71     writeb(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 1);
  72
  73     /* granted bit must be set now */
  74     locsts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS);
  75     g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, Granted), ==, 1);
  76     g_assert_cmpint(FIELD_EX32(locsts, CRB_LOC_STS, beenSeized), ==, 0);
  77
  78     /* we must have an assigned locality */
  79     locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE);
  80     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1);
  81     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 1);
  82     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0);
  83     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0);
  84     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1);
  85
  86     /* set into ready state */
  87     writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ, 1);
  88
  89     /* TPM must not be in the idle state */
  90     sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
  91     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 0);
  92     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
  93
  94     memwrite(caddr, TPM_CMD, sizeof(TPM_CMD));
  95
  96     uint32_t start = 1;
  97     uint64_t end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
  98     writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START, start);
  99     do {
 100         start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
 101         if ((start & 1) == 0) {
 102             break;
 103         }
 104     } while (g_get_monotonic_time() < end_time);
 105     start = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_START);
 106     g_assert_cmpint(start & 1, ==, 0);
 107
 108     /* TPM must still not be in the idle state */
 109     sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
 110     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 0);
 111     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
 112
 113     struct tpm_hdr tpm_msg;
 114     memread(raddr, &tpm_msg, sizeof(tpm_msg));
 115     g_assert_cmpmem(&tpm_msg, sizeof(tpm_msg), s->tpm_msg, sizeof(*s->tpm_msg));
 116
 117     /* set TPM into idle state */
 118     writel(TPM_CRB_ADDR_BASE + A_CRB_CTRL_REQ, 2);
 119
 120     /* idle state must be indicated now */
 121     sts = readl(TPM_CRB_ADDR_BASE + A_CRB_CTRL_STS);
 122     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmIdle), ==, 1);
 123     g_assert_cmpint(FIELD_EX32(sts, CRB_CTRL_STS, tpmSts), ==, 0);
 124
 125     /* relinquish locality */
 126     writel(TPM_CRB_ADDR_BASE + A_CRB_LOC_CTRL, 2);
 127
 128     /* Granted flag must be cleared */
 129     sts = readl(TPM_CRB_ADDR_BASE + A_CRB_LOC_STS);
 130     g_assert_cmpint(FIELD_EX32(sts, CRB_LOC_STS, Granted), ==, 0);
 131     g_assert_cmpint(FIELD_EX32(sts, CRB_LOC_STS, beenSeized), ==, 0);
 132
 133     /* no locality may be assigned */
 134     locstate = readb(TPM_CRB_ADDR_BASE + A_CRB_LOC_STATE);
 135     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmEstablished), ==, 1);
 136     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, locAssigned), ==, 0);
 137     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, activeLocality), ==, 0);
 138     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, reserved), ==, 0);
 139     g_assert_cmpint(FIELD_EX32(locstate, CRB_LOC_STATE, tpmRegValidSts), ==, 1);
 140
 141 }
 142
 143 int main(int argc, char **argv)
 144 {
 145     int ret;
 146     char *args, *tmp_path = g_dir_make_tmp("qemu-tpm-crb-test.XXXXXX", NULL);
 147     GThread *thread;
 148     TPMTestState test;
 149
 150     module_call_init(MODULE_INIT_QOM);
 151     g_test_init(&argc, &argv, NULL);
 152
 153     test.addr = g_new0(SocketAddress, 1);
 154     test.addr->type = SOCKET_ADDRESS_TYPE_UNIX;
 155     test.addr->u.q_unix.path = g_build_filename(tmp_path, "sock", NULL);
 156     g_mutex_init(&test.data_mutex);
 157     g_cond_init(&test.data_cond);
 158     test.data_cond_signal = false;
 159     test.tpm_version = TPM_VERSION_2_0;
 160
 161     thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test);
 162     tpm_emu_test_wait_cond(&test);
 163
 164     args = g_strdup_printf(
 165         "-chardev socket,id=chr,path=%s "
 166         "-tpmdev emulator,id=dev,chardev=chr "
 167         "-device tpm-crb,tpmdev=dev",
 168         test.addr->u.q_unix.path);
 169     qtest_start(args);
 170
 171     qtest_add_data_func("/tpm-crb/test", &test, tpm_crb_test);
 172     ret = g_test_run();
 173
 174     qtest_end();
 175
 176     g_thread_join(thread);
 177     g_unlink(test.addr->u.q_unix.path);
 178     qapi_free_SocketAddress(test.addr);
 179     g_rmdir(tmp_path);
 180     g_free(tmp_path);
 181     g_free(args);
 182     return ret;
 183 }