Merge remote-tracking branch 'remotes/stefanberger/tags/pull-tpm-2018-02-21-2' into staging

Merge tpm 2018/02/21 v2

# gpg: Signature made Tue 27 Feb 2018 13:50:28 GMT
# gpg:                using RSA key 75AD65802A0B4211
# gpg: Good signature from "Stefan Berger <stefanb@linux.vnet.ibm.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: B818 B9CA DF90 89C2 D5CE  C66B 75AD 6580 2A0B 4211

* remotes/stefanberger/tags/pull-tpm-2018-02-21-2:
  tests: add test for TPM TIS device
  tests: Move common TPM test code into tpm-emu.c

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

5 files changed, 704 insertions, 172 deletions

diff --git a/tests/Makefile.include b/tests/Makefile.include
index 577eb573a2..937cbd874a 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -287,6 +287,7 @@ ifeq ($(CONFIG_VHOST_USER_NET_TEST_i386),)
 check-qtest-x86_64-$(CONFIG_VHOST_USER_NET_TEST_x86_64) += tests/vhost-user-test$(EXESUF)
 endif
 check-qtest-i386-$(CONFIG_TPM) += tests/tpm-crb-test$(EXESUF)
+check-qtest-i386-$(CONFIG_TPM) += tests/tpm-tis-test$(EXESUF)
 check-qtest-i386-$(CONFIG_SLIRP) += tests/test-netfilter$(EXESUF)
 check-qtest-i386-$(CONFIG_POSIX) += tests/test-filter-mirror$(EXESUF)
 check-qtest-i386-$(CONFIG_POSIX) += tests/test-filter-redirector$(EXESUF)
@@ -714,7 +715,8 @@ tests/test-crypto-tlssession$(EXESUF): tests/test-crypto-tlssession.o \
 tests/test-io-task$(EXESUF): tests/test-io-task.o $(test-io-obj-y)
 tests/test-io-channel-socket$(EXESUF): tests/test-io-channel-socket.o \
         tests/io-channel-helpers.o $(test-io-obj-y)
-tests/tpm-crb-test$(EXESUF): tests/tpm-crb-test.o $(test-io-obj-y)
+tests/tpm-crb-test$(EXESUF): tests/tpm-crb-test.o tests/tpm-emu.o $(test-io-obj-y)
+tests/tpm-tis-test$(EXESUF): tests/tpm-tis-test.o tests/tpm-emu.o $(test-io-obj-y)
 tests/test-io-channel-file$(EXESUF): tests/test-io-channel-file.o \
         tests/io-channel-helpers.o $(test-io-obj-y)
 tests/test-io-channel-tls$(EXESUF): tests/test-io-channel-tls.o \
diff --git a/tests/tpm-crb-test.c b/tests/tpm-crb-test.c
index 8bf1507e00..e1513cb69e 100644
--- a/tests/tpm-crb-test.c
+++ b/tests/tpm-crb-test.c
@@ -14,177 +14,9 @@
 #include <glib/gstdio.h>
 
 #include "hw/acpi/tpm.h"
-#include "hw/tpm/tpm_ioctl.h"
 #include "io/channel-socket.h"
 #include "libqtest.h"
-#include "qapi/error.h"
-
-#define TPM_RC_FAILURE 0x101
-#define TPM2_ST_NO_SESSIONS 0x8001
-
-struct tpm_hdr {
-    uint16_t tag;
-    uint32_t len;
-    uint32_t code; /*ordinal/error */
-    char buffer[];
-} QEMU_PACKED;
-
-typedef struct TestState {
-    CompatGMutex data_mutex;
-    CompatGCond data_cond;
-    SocketAddress *addr;
-    QIOChannel *tpm_ioc;
-    GThread *emu_tpm_thread;
-    struct tpm_hdr *tpm_msg;
-} TestState;
-
-static void test_wait_cond(TestState *s)
-{
-    gint64 end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
-
-    g_mutex_lock(&s->data_mutex);
-    if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) {
-        g_assert_not_reached();
-    }
-    g_mutex_unlock(&s->data_mutex);
-}
-
-static void *emu_tpm_thread(void *data)
-{
-    TestState *s = data;
-    QIOChannel *ioc = s->tpm_ioc;
-
-    s->tpm_msg = g_new(struct tpm_hdr, 1);
-    while (true) {
-        int minhlen = sizeof(s->tpm_msg->tag) + sizeof(s->tpm_msg->len);
-
-        if (!qio_channel_read(ioc, (char *)s->tpm_msg, minhlen, &error_abort)) {
-            break;
-        }
-        s->tpm_msg->tag = be16_to_cpu(s->tpm_msg->tag);
-        s->tpm_msg->len = be32_to_cpu(s->tpm_msg->len);
-        g_assert_cmpint(s->tpm_msg->len, >=, minhlen);
-        g_assert_cmpint(s->tpm_msg->tag, ==, TPM2_ST_NO_SESSIONS);
-
-        s->tpm_msg = g_realloc(s->tpm_msg, s->tpm_msg->len);
-        qio_channel_read(ioc, (char *)&s->tpm_msg->code,
-                         s->tpm_msg->len - minhlen, &error_abort);
-        s->tpm_msg->code = be32_to_cpu(s->tpm_msg->code);
-
-        /* reply error */
-        s->tpm_msg->tag = cpu_to_be16(TPM2_ST_NO_SESSIONS);
-        s->tpm_msg->len = cpu_to_be32(sizeof(struct tpm_hdr));
-        s->tpm_msg->code = cpu_to_be32(TPM_RC_FAILURE);
-        qio_channel_write(ioc, (char *)s->tpm_msg, be32_to_cpu(s->tpm_msg->len),
-                          &error_abort);
-    }
-
-    g_free(s->tpm_msg);
-    s->tpm_msg = NULL;
-    object_unref(OBJECT(s->tpm_ioc));
-    return NULL;
-}
-
-static void *emu_ctrl_thread(void *data)
-{
-    TestState *s = data;
-    QIOChannelSocket *lioc = qio_channel_socket_new();
-    QIOChannel *ioc;
-
-    qio_channel_socket_listen_sync(lioc, s->addr, &error_abort);
-    g_cond_signal(&s->data_cond);
-
-    qio_channel_wait(QIO_CHANNEL(lioc), G_IO_IN);
-    ioc = QIO_CHANNEL(qio_channel_socket_accept(lioc, &error_abort));
-    g_assert(ioc);
-
-    {
-        uint32_t cmd = 0;
-        struct iovec iov = { .iov_base = &cmd, .iov_len = sizeof(cmd) };
-        int *pfd = NULL;
-        size_t nfd = 0;
-
-        qio_channel_readv_full(ioc, &iov, 1, &pfd, &nfd, &error_abort);
-        cmd = be32_to_cpu(cmd);
-        g_assert_cmpint(cmd, ==, CMD_SET_DATAFD);
-        g_assert_cmpint(nfd, ==, 1);
-        s->tpm_ioc = QIO_CHANNEL(qio_channel_socket_new_fd(*pfd, &error_abort));
-        g_free(pfd);
-
-        cmd = 0;
-        qio_channel_write(ioc, (char *)&cmd, sizeof(cmd), &error_abort);
-
-        s->emu_tpm_thread = g_thread_new(NULL, emu_tpm_thread, s);
-    }
-
-    while (true) {
-        uint32_t cmd;
-        ssize_t ret;
-
-        ret = qio_channel_read(ioc, (char *)&cmd, sizeof(cmd), NULL);
-        if (ret <= 0) {
-            break;
-        }
-
-        cmd = be32_to_cpu(cmd);
-        switch (cmd) {
-        case CMD_GET_CAPABILITY: {
-            ptm_cap cap = cpu_to_be64(0x3fff);
-            qio_channel_write(ioc, (char *)&cap, sizeof(cap), &error_abort);
-            break;
-        }
-        case CMD_INIT: {
-            ptm_init init;
-            qio_channel_read(ioc, (char *)&init.u.req, sizeof(init.u.req),
-                              &error_abort);
-            init.u.resp.tpm_result = 0;
-            qio_channel_write(ioc, (char *)&init.u.resp, sizeof(init.u.resp),
-                              &error_abort);
-            break;
-        }
-        case CMD_SHUTDOWN: {
-            ptm_res res = 0;
-            qio_channel_write(ioc, (char *)&res, sizeof(res), &error_abort);
-            qio_channel_close(s->tpm_ioc, &error_abort);
-            g_thread_join(s->emu_tpm_thread);
-            break;
-        }
-        case CMD_STOP: {
-            ptm_res res = 0;
-            qio_channel_write(ioc, (char *)&res, sizeof(res), &error_abort);
-            break;
-        }
-        case CMD_SET_BUFFERSIZE: {
-            ptm_setbuffersize sbs;
-            qio_channel_read(ioc, (char *)&sbs.u.req, sizeof(sbs.u.req),
-                             &error_abort);
-            sbs.u.resp.buffersize = sbs.u.req.buffersize ?: cpu_to_be32(4096);
-            sbs.u.resp.tpm_result = 0;
-            sbs.u.resp.minsize = cpu_to_be32(128);
-            sbs.u.resp.maxsize = cpu_to_be32(4096);
-            qio_channel_write(ioc, (char *)&sbs.u.resp, sizeof(sbs.u.resp),
-                              &error_abort);
-            break;
-        }
-        case CMD_SET_LOCALITY: {
-            ptm_loc loc;
-            /* Note: this time it's not u.req / u.resp... */
-            qio_channel_read(ioc, (char *)&loc, sizeof(loc), &error_abort);
-            g_assert_cmpint(loc.u.req.loc, ==, 0);
-            loc.u.resp.tpm_result = 0;
-            qio_channel_write(ioc, (char *)&loc, sizeof(loc), &error_abort);
-            break;
-        }
-        default:
-            g_debug("unimplemented %u", cmd);
-            g_assert_not_reached();
-        }
-    }
-
-    object_unref(OBJECT(ioc));
-    object_unref(OBJECT(lioc));
-    return NULL;
-}
+#include "tpm-emu.h"
 
 #define TPM_CMD "\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00"
 
@@ -250,8 +82,8 @@ int main(int argc, char **argv)
     g_mutex_init(&test.data_mutex);
     g_cond_init(&test.data_cond);
 
-    thread = g_thread_new(NULL, emu_ctrl_thread, &test);
-    test_wait_cond(&test);
+    thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test);
+    tpm_emu_test_wait_cond(&test);
 
     args = g_strdup_printf(
         "-chardev socket,id=chr,path=%s "
diff --git a/tests/tpm-emu.c b/tests/tpm-emu.c
new file mode 100644
index 0000000000..4dada76834
--- /dev/null
+++ b/tests/tpm-emu.c
@@ -0,0 +1,174 @@
+/*
+ * Minimal TPM emulator for TPM test cases
+ *
+ * Copyright (c) 2018 Red Hat, Inc.
+ *
+ * Authors:
+ *   Marc-André Lureau <marcandre.lureau@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include <glib/gstdio.h>
+
+#include "hw/tpm/tpm_ioctl.h"
+#include "io/channel-socket.h"
+#include "qapi/error.h"
+#include "tpm-emu.h"
+
+void tpm_emu_test_wait_cond(TestState *s)
+{
+    gint64 end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
+
+    g_mutex_lock(&s->data_mutex);
+    if (!g_cond_wait_until(&s->data_cond, &s->data_mutex, end_time)) {
+        g_assert_not_reached();
+    }
+    g_mutex_unlock(&s->data_mutex);
+}
+
+static void *tpm_emu_tpm_thread(void *data)
+{
+    TestState *s = data;
+    QIOChannel *ioc = s->tpm_ioc;
+
+    s->tpm_msg = g_new(struct tpm_hdr, 1);
+    while (true) {
+        int minhlen = sizeof(s->tpm_msg->tag) + sizeof(s->tpm_msg->len);
+
+        if (!qio_channel_read(ioc, (char *)s->tpm_msg, minhlen, &error_abort)) {
+            break;
+        }
+        s->tpm_msg->tag = be16_to_cpu(s->tpm_msg->tag);
+        s->tpm_msg->len = be32_to_cpu(s->tpm_msg->len);
+        g_assert_cmpint(s->tpm_msg->len, >=, minhlen);
+        g_assert_cmpint(s->tpm_msg->tag, ==, TPM2_ST_NO_SESSIONS);
+
+        s->tpm_msg = g_realloc(s->tpm_msg, s->tpm_msg->len);
+        qio_channel_read(ioc, (char *)&s->tpm_msg->code,
+                         s->tpm_msg->len - minhlen, &error_abort);
+        s->tpm_msg->code = be32_to_cpu(s->tpm_msg->code);
+
+        /* reply error */
+        s->tpm_msg->tag = cpu_to_be16(TPM2_ST_NO_SESSIONS);
+        s->tpm_msg->len = cpu_to_be32(sizeof(struct tpm_hdr));
+        s->tpm_msg->code = cpu_to_be32(TPM_RC_FAILURE);
+        qio_channel_write(ioc, (char *)s->tpm_msg, be32_to_cpu(s->tpm_msg->len),
+                          &error_abort);
+    }
+
+    g_free(s->tpm_msg);
+    s->tpm_msg = NULL;
+    object_unref(OBJECT(s->tpm_ioc));
+    return NULL;
+}
+
+void *tpm_emu_ctrl_thread(void *data)
+{
+    TestState *s = data;
+    QIOChannelSocket *lioc = qio_channel_socket_new();
+    QIOChannel *ioc;
+
+    qio_channel_socket_listen_sync(lioc, s->addr, &error_abort);
+    g_cond_signal(&s->data_cond);
+
+    qio_channel_wait(QIO_CHANNEL(lioc), G_IO_IN);
+    ioc = QIO_CHANNEL(qio_channel_socket_accept(lioc, &error_abort));
+    g_assert(ioc);
+
+    {
+        uint32_t cmd = 0;
+        struct iovec iov = { .iov_base = &cmd, .iov_len = sizeof(cmd) };
+        int *pfd = NULL;
+        size_t nfd = 0;
+
+        qio_channel_readv_full(ioc, &iov, 1, &pfd, &nfd, &error_abort);
+        cmd = be32_to_cpu(cmd);
+        g_assert_cmpint(cmd, ==, CMD_SET_DATAFD);
+        g_assert_cmpint(nfd, ==, 1);
+        s->tpm_ioc = QIO_CHANNEL(qio_channel_socket_new_fd(*pfd, &error_abort));
+        g_free(pfd);
+
+        cmd = 0;
+        qio_channel_write(ioc, (char *)&cmd, sizeof(cmd), &error_abort);
+
+        s->emu_tpm_thread = g_thread_new(NULL, tpm_emu_tpm_thread, s);
+    }
+
+    while (true) {
+        uint32_t cmd;
+        ssize_t ret;
+
+        ret = qio_channel_read(ioc, (char *)&cmd, sizeof(cmd), NULL);
+        if (ret <= 0) {
+            break;
+        }
+
+        cmd = be32_to_cpu(cmd);
+        switch (cmd) {
+        case CMD_GET_CAPABILITY: {
+            ptm_cap cap = cpu_to_be64(0x3fff);
+            qio_channel_write(ioc, (char *)&cap, sizeof(cap), &error_abort);
+            break;
+        }
+        case CMD_INIT: {
+            ptm_init init;
+            qio_channel_read(ioc, (char *)&init.u.req, sizeof(init.u.req),
+                              &error_abort);
+            init.u.resp.tpm_result = 0;
+            qio_channel_write(ioc, (char *)&init.u.resp, sizeof(init.u.resp),
+                              &error_abort);
+            break;
+        }
+        case CMD_SHUTDOWN: {
+            ptm_res res = 0;
+            qio_channel_write(ioc, (char *)&res, sizeof(res), &error_abort);
+            qio_channel_close(s->tpm_ioc, &error_abort);
+            g_thread_join(s->emu_tpm_thread);
+            break;
+        }
+        case CMD_STOP: {
+            ptm_res res = 0;
+            qio_channel_write(ioc, (char *)&res, sizeof(res), &error_abort);
+            break;
+        }
+        case CMD_SET_BUFFERSIZE: {
+            ptm_setbuffersize sbs;
+            qio_channel_read(ioc, (char *)&sbs.u.req, sizeof(sbs.u.req),
+                             &error_abort);
+            sbs.u.resp.buffersize = sbs.u.req.buffersize ?: cpu_to_be32(4096);
+            sbs.u.resp.tpm_result = 0;
+            sbs.u.resp.minsize = cpu_to_be32(128);
+            sbs.u.resp.maxsize = cpu_to_be32(4096);
+            qio_channel_write(ioc, (char *)&sbs.u.resp, sizeof(sbs.u.resp),
+                              &error_abort);
+            break;
+        }
+        case CMD_SET_LOCALITY: {
+            ptm_loc loc;
+            /* Note: this time it's not u.req / u.resp... */
+            qio_channel_read(ioc, (char *)&loc, sizeof(loc), &error_abort);
+            g_assert_cmpint(loc.u.req.loc, ==, 0);
+            loc.u.resp.tpm_result = 0;
+            qio_channel_write(ioc, (char *)&loc, sizeof(loc), &error_abort);
+            break;
+        }
+        case CMD_GET_TPMESTABLISHED: {
+            ptm_est est = {
+                .u.resp.bit = 0,
+            };
+            qio_channel_write(ioc, (char *)&est, sizeof(est), &error_abort);
+            break;
+        }
+        default:
+            g_debug("unimplemented %u", cmd);
+            g_assert_not_reached();
+        }
+    }
+
+    object_unref(OBJECT(ioc));
+    object_unref(OBJECT(lioc));
+    return NULL;
+}
diff --git a/tests/tpm-emu.h b/tests/tpm-emu.h
new file mode 100644
index 0000000000..ef4bfa8800
--- /dev/null
+++ b/tests/tpm-emu.h
@@ -0,0 +1,38 @@
+/*
+ * Minimal TPM emulator for TPM test cases
+ *
+ * Copyright (c) 2018 Red Hat, Inc.
+ *
+ * Authors:
+ *   Marc-André Lureau <marcandre.lureau@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef TESTS_TPM_EMU_H
+#define TESTS_TPM_EMU_H
+
+#define TPM_RC_FAILURE 0x101
+#define TPM2_ST_NO_SESSIONS 0x8001
+
+struct tpm_hdr {
+    uint16_t tag;
+    uint32_t len;
+    uint32_t code; /*ordinal/error */
+    char buffer[];
+} QEMU_PACKED;
+
+typedef struct TestState {
+    CompatGMutex data_mutex;
+    CompatGCond data_cond;
+    SocketAddress *addr;
+    QIOChannel *tpm_ioc;
+    GThread *emu_tpm_thread;
+    struct tpm_hdr *tpm_msg;
+} TestState;
+
+void tpm_emu_test_wait_cond(TestState *s);
+void *tpm_emu_ctrl_thread(void *data);
+
+#endif /* TEST_TPM_EMU_H */
diff --git a/tests/tpm-tis-test.c b/tests/tpm-tis-test.c
new file mode 100644
index 0000000000..14754d9706
--- /dev/null
+++ b/tests/tpm-tis-test.c
@@ -0,0 +1,486 @@
+/*
+ * QTest testcase for TPM TIS
+ *
+ * Copyright (c) 2018 Red Hat, Inc.
+ * Copyright (c) 2018 IBM Corporation
+ *
+ * Authors:
+ *   Marc-André Lureau <marcandre.lureau@redhat.com>
+ *   Stefan Berger <stefanb@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include <glib/gstdio.h>
+
+#include "hw/acpi/tpm.h"
+#include "io/channel-socket.h"
+#include "libqtest.h"
+#include "tpm-emu.h"
+
+#define TIS_REG(LOCTY, REG) \
+    (TPM_TIS_ADDR_BASE + ((LOCTY) << 12) + REG)
+
+#define DEBUG_TIS_TEST 0
+
+#define DPRINTF(fmt, ...) do { \
+    if (DEBUG_TIS_TEST) { \
+        printf(fmt, ## __VA_ARGS__); \
+    } \
+} while (0)
+
+#define DPRINTF_ACCESS \
+    DPRINTF("%s: %d: locty=%d l=%d access=0x%02x pending_request_flag=0x%x\n", \
+            __func__, __LINE__, locty, l, access, pending_request_flag)
+
+#define DPRINTF_STS \
+    DPRINTF("%s: %d: sts = 0x%08x\n", __func__, __LINE__, sts)
+
+static const uint8_t TPM_CMD[12] =
+    "\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00";
+
+static void tpm_tis_test_check_localities(const void *data)
+{
+    uint8_t locty;
+    uint8_t access;
+    uint32_t ifaceid;
+    uint32_t capability;
+    uint32_t didvid;
+    uint32_t rid;
+
+    for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES; locty++) {
+        access = readb(TIS_REG(0, TPM_TIS_REG_ACCESS));
+        g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                    TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+        capability = readl(TIS_REG(locty, TPM_TIS_REG_INTF_CAPABILITY));
+        g_assert_cmpint(capability, ==, TPM_TIS_CAPABILITIES_SUPPORTED2_0);
+
+        ifaceid = readl(TIS_REG(locty, TPM_TIS_REG_INTERFACE_ID));
+        g_assert_cmpint(ifaceid, ==, TPM_TIS_IFACE_ID_SUPPORTED_FLAGS2_0);
+
+        didvid = readl(TIS_REG(locty, TPM_TIS_REG_DID_VID));
+        g_assert_cmpint(didvid, !=, 0);
+        g_assert_cmpint(didvid, !=, 0xffffffff);
+
+        rid = readl(TIS_REG(locty, TPM_TIS_REG_RID));
+        g_assert_cmpint(rid, !=, 0);
+        g_assert_cmpint(rid, !=, 0xffffffff);
+    }
+}
+
+static void tpm_tis_test_check_access_reg(const void *data)
+{
+    uint8_t locty;
+    uint8_t access;
+
+    /* do not test locality 4 (hw only) */
+    for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES - 1; locty++) {
+        access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
+        g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                    TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+        /* request use of locality */
+        writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
+
+        access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
+        g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                    TPM_TIS_ACCESS_ACTIVE_LOCALITY |
+                                    TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+        /* release access */
+        writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS),
+               TPM_TIS_ACCESS_ACTIVE_LOCALITY);
+        access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
+        g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                    TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+    }
+}
+
+/*
+ * Test case for seizing access by a higher number locality
+ */
+static void tpm_tis_test_check_access_reg_seize(const void *data)
+{
+    int locty, l;
+    uint8_t access;
+    uint8_t pending_request_flag;
+
+    /* do not test locality 4 (hw only) */
+    for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES - 1; locty++) {
+        pending_request_flag = 0;
+
+        access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
+        g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                    TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+        /* request use of locality */
+        writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
+        access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
+        g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                    TPM_TIS_ACCESS_ACTIVE_LOCALITY |
+                                    TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+        /* lower localities cannot seize access */
+        for (l = 0; l < locty; l++) {
+            /* lower locality is not active */
+            access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
+            DPRINTF_ACCESS;
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        pending_request_flag |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+            /* try to request use from 'l' */
+            writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
+
+            /* requesting use from 'l' was not possible;
+               we must see REQUEST_USE and possibly PENDING_REQUEST */
+            access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
+            DPRINTF_ACCESS;
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        TPM_TIS_ACCESS_REQUEST_USE |
+                                        pending_request_flag |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+            /* locality 'locty' must be unchanged;
+               we must see PENDING_REQUEST */
+            access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        TPM_TIS_ACCESS_ACTIVE_LOCALITY |
+                                        TPM_TIS_ACCESS_PENDING_REQUEST |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+            /* try to seize from 'l' */
+            writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_SEIZE);
+            /* seize from 'l' was not possible */
+            access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
+            DPRINTF_ACCESS;
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        TPM_TIS_ACCESS_REQUEST_USE |
+                                        pending_request_flag |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+            /* locality 'locty' must be unchanged */
+            access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        TPM_TIS_ACCESS_ACTIVE_LOCALITY |
+                                        TPM_TIS_ACCESS_PENDING_REQUEST |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+            /* on the next loop we will have a PENDING_REQUEST flag
+               set for locality 'l' */
+            pending_request_flag = TPM_TIS_ACCESS_PENDING_REQUEST;
+        }
+
+        /* higher localities can 'seize' access but not 'request use';
+           note: this will activate first l+1, then l+2 etc. */
+        for (l = locty + 1; l < TPM_TIS_NUM_LOCALITIES - 1; l++) {
+            /* try to 'request use' from 'l' */
+            writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
+
+            /* requesting use from 'l' was not possible; we should see
+               REQUEST_USE and may see PENDING_REQUEST */
+            access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
+            DPRINTF_ACCESS;
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        TPM_TIS_ACCESS_REQUEST_USE |
+                                        pending_request_flag |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+            /* locality 'l-1' must be unchanged; we should always
+               see PENDING_REQUEST from 'l' requesting access */
+            access = readb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS));
+            DPRINTF_ACCESS;
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        TPM_TIS_ACCESS_ACTIVE_LOCALITY |
+                                        TPM_TIS_ACCESS_PENDING_REQUEST |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+            /* try to seize from 'l' */
+            writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_SEIZE);
+
+            /* seize from 'l' was possible */
+            access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
+            DPRINTF_ACCESS;
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        TPM_TIS_ACCESS_ACTIVE_LOCALITY |
+                                        pending_request_flag |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+            /* l - 1 should show that it has BEEN_SEIZED */
+            access = readb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS));
+            DPRINTF_ACCESS;
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        TPM_TIS_ACCESS_BEEN_SEIZED |
+                                        pending_request_flag |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+            /* clear the BEEN_SEIZED flag and make sure it's gone */
+            writeb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS),
+                   TPM_TIS_ACCESS_BEEN_SEIZED);
+
+            access = readb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS));
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        pending_request_flag |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+        }
+
+        /* PENDING_REQUEST will not be set if locty = 0 since all localities
+           were active; in case of locty = 1, locality 0 will be active
+           but no PENDING_REQUEST anywhere */
+        if (locty <= 1) {
+            pending_request_flag = 0;
+        }
+
+        /* release access from l - 1; this activates locty - 1 */
+        l--;
+
+        access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
+        DPRINTF_ACCESS;
+
+        DPRINTF("%s: %d: relinquishing control on l = %d\n",
+                __func__, __LINE__, l);
+        writeb(TIS_REG(l, TPM_TIS_REG_ACCESS),
+               TPM_TIS_ACCESS_ACTIVE_LOCALITY);
+
+        access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
+        DPRINTF_ACCESS;
+        g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                    pending_request_flag |
+                                    TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+        for (l = locty - 1; l >= 0; l--) {
+            access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
+            DPRINTF_ACCESS;
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        TPM_TIS_ACCESS_ACTIVE_LOCALITY |
+                                        pending_request_flag |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+            /* release this locality */
+            writeb(TIS_REG(l, TPM_TIS_REG_ACCESS),
+                   TPM_TIS_ACCESS_ACTIVE_LOCALITY);
+
+            if (l == 1) {
+                pending_request_flag = 0;
+            }
+        }
+
+        /* no locality may be active now */
+        for (l = 0; l < TPM_TIS_NUM_LOCALITIES - 1; l++) {
+            access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
+            DPRINTF_ACCESS;
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+        }
+    }
+}
+
+/*
+ * Test case for getting access when higher number locality relinquishes access
+ */
+static void tpm_tis_test_check_access_reg_release(const void *data)
+{
+    int locty, l;
+    uint8_t access;
+    uint8_t pending_request_flag;
+
+    /* do not test locality 4 (hw only) */
+    for (locty = TPM_TIS_NUM_LOCALITIES - 2; locty >= 0; locty--) {
+        pending_request_flag = 0;
+
+        access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
+        g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                    TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+        /* request use of locality */
+        writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
+        access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
+        g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                    TPM_TIS_ACCESS_ACTIVE_LOCALITY |
+                                    TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+        /* request use of all other localities */
+        for (l = 0; l < TPM_TIS_NUM_LOCALITIES - 1; l++) {
+            if (l == locty) {
+                continue;
+            }
+            /* request use of locality 'l' -- we MUST see REQUEST USE and
+               may see PENDING_REQUEST */
+            writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
+            access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
+            DPRINTF_ACCESS;
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        TPM_TIS_ACCESS_REQUEST_USE |
+                                        pending_request_flag |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+            pending_request_flag = TPM_TIS_ACCESS_PENDING_REQUEST;
+        }
+        /* release locality 'locty' */
+        writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS),
+               TPM_TIS_ACCESS_ACTIVE_LOCALITY);
+        /* highest locality should now be active; release it and make sure the
+           next higest locality is active afterwards */
+        for (l = TPM_TIS_NUM_LOCALITIES - 2; l >= 0; l--) {
+            if (l == locty) {
+                continue;
+            }
+            /* 'l' should be active now */
+            access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
+            DPRINTF_ACCESS;
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        TPM_TIS_ACCESS_ACTIVE_LOCALITY |
+                                        pending_request_flag |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+            /* 'l' relinquishes access */
+            writeb(TIS_REG(l, TPM_TIS_REG_ACCESS),
+                   TPM_TIS_ACCESS_ACTIVE_LOCALITY);
+            access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
+            DPRINTF_ACCESS;
+            if (l == 1 || (locty <= 1 && l == 2)) {
+                pending_request_flag = 0;
+            }
+            g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                        pending_request_flag |
+                                        TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+        }
+    }
+}
+
+/*
+ * Test case for transmitting packets
+ */
+static void tpm_tis_test_check_transmit(const void *data)
+{
+    const TestState *s = data;
+    uint8_t access;
+    uint32_t sts;
+    uint16_t bcount;
+    size_t i;
+
+    /* request use of locality 0 */
+    writeb(TIS_REG(0, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
+    access = readb(TIS_REG(0, TPM_TIS_REG_ACCESS));
+    g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
+                                TPM_TIS_ACCESS_ACTIVE_LOCALITY |
+                                TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
+
+    sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
+    DPRINTF_STS;
+
+    g_assert_cmpint(sts & 0xff, ==, 0);
+    g_assert_cmpint(sts & TPM_TIS_STS_TPM_FAMILY_MASK, ==,
+                    TPM_TIS_STS_TPM_FAMILY2_0);
+
+    bcount = (sts >> 8) & 0xffff;
+    g_assert_cmpint(bcount, >=, 128);
+
+    writel(TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_COMMAND_READY);
+    sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
+    DPRINTF_STS;
+    g_assert_cmpint(sts & 0xff, ==, TPM_TIS_STS_COMMAND_READY);
+
+    /* transmit command */
+    for (i = 0; i < sizeof(TPM_CMD); i++) {
+        writeb(TIS_REG(0, TPM_TIS_REG_DATA_FIFO), TPM_CMD[i]);
+        sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
+        DPRINTF_STS;
+        if (i < sizeof(TPM_CMD) - 1) {
+            g_assert_cmpint(sts & 0xff, ==,
+                            TPM_TIS_STS_EXPECT | TPM_TIS_STS_VALID);
+        } else {
+            g_assert_cmpint(sts & 0xff, ==, TPM_TIS_STS_VALID);
+        }
+        g_assert_cmpint((sts >> 8) & 0xffff, ==, --bcount);
+    }
+    /* start processing */
+    writeb(TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_TPM_GO);
+
+    uint64_t end_time = g_get_monotonic_time() + 50 * G_TIME_SPAN_SECOND;
+    do {
+        sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
+        if ((sts & TPM_TIS_STS_DATA_AVAILABLE) != 0) {
+            break;
+        }
+    } while (g_get_monotonic_time() < end_time);
+
+    sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
+    DPRINTF_STS;
+    g_assert_cmpint(sts & 0xff, == ,
+                    TPM_TIS_STS_VALID | TPM_TIS_STS_DATA_AVAILABLE);
+    bcount = (sts >> 8) & 0xffff;
+
+    /* read response */
+    uint8_t tpm_msg[sizeof(struct tpm_hdr)];
+    g_assert_cmpint(sizeof(tpm_msg), ==, bcount);
+
+    for (i = 0; i < sizeof(tpm_msg); i++) {
+        tpm_msg[i] = readb(TIS_REG(0, TPM_TIS_REG_DATA_FIFO));
+        sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
+        DPRINTF_STS;
+        if (sts & TPM_TIS_STS_DATA_AVAILABLE) {
+            g_assert_cmpint((sts >> 8) & 0xffff, ==, --bcount);
+        }
+    }
+    g_assert_cmpmem(tpm_msg, sizeof(tpm_msg), s->tpm_msg, sizeof(*s->tpm_msg));
+
+    /* relinquish use of locality 0 */
+    writeb(TIS_REG(0, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_ACTIVE_LOCALITY);
+    access = readb(TIS_REG(0, TPM_TIS_REG_ACCESS));
+}
+
+int main(int argc, char **argv)
+{
+    int ret;
+    char *args, *tmp_path = g_dir_make_tmp("qemu-tpm-tis-test.XXXXXX", NULL);
+    GThread *thread;
+    TestState test;
+
+    module_call_init(MODULE_INIT_QOM);
+    g_test_init(&argc, &argv, NULL);
+
+    test.addr = g_new0(SocketAddress, 1);
+    test.addr->type = SOCKET_ADDRESS_TYPE_UNIX;
+    test.addr->u.q_unix.path = g_build_filename(tmp_path, "sock", NULL);
+    g_mutex_init(&test.data_mutex);
+    g_cond_init(&test.data_cond);
+
+    thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test);
+    tpm_emu_test_wait_cond(&test);
+
+    args = g_strdup_printf(
+        "-chardev socket,id=chr,path=%s "
+        "-tpmdev emulator,id=dev,chardev=chr "
+        "-device tpm-tis,tpmdev=dev",
+        test.addr->u.q_unix.path);
+    qtest_start(args);
+
+    qtest_add_data_func("/tpm-tis/test_check_localities", &test,
+                        tpm_tis_test_check_localities);
+
+    qtest_add_data_func("/tpm-tis/test_check_access_reg", &test,
+                        tpm_tis_test_check_access_reg);
+
+    qtest_add_data_func("/tpm-tis/test_check_access_reg_seize", &test,
+                        tpm_tis_test_check_access_reg_seize);
+
+    qtest_add_data_func("/tpm-tis/test_check_access_reg_release", &test,
+                        tpm_tis_test_check_access_reg_release);
+
+    qtest_add_data_func("/tpm-tis/test_check_transmit", &test,
+                        tpm_tis_test_check_transmit);
+
+    ret = g_test_run();
+
+    qtest_end();
+
+    g_thread_join(thread);
+    g_unlink(test.addr->u.q_unix.path);
+    qapi_free_SocketAddress(test.addr);
+    g_rmdir(tmp_path);
+    g_free(tmp_path);
+    g_free(args);
+    return ret;
+}