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https://gitlab.com/qemu-project/qemu
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2271b75fa9
This patch fixes a race condition and test failure where the main process waits for the signal of a thread but the thread already sent that signal via a condition. Since these signals are non-sticky, we need to introduce a separate variable to make this signal sticky. Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
487 lines
19 KiB
C
487 lines
19 KiB
C
/*
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* QTest testcase for TPM TIS
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*
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* Copyright (c) 2018 Red Hat, Inc.
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* Copyright (c) 2018 IBM Corporation
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*
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* Authors:
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* Marc-André Lureau <marcandre.lureau@redhat.com>
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* Stefan Berger <stefanb@linux.vnet.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include <glib/gstdio.h>
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#include "hw/acpi/tpm.h"
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#include "io/channel-socket.h"
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#include "libqtest.h"
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#include "tpm-emu.h"
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#define TIS_REG(LOCTY, REG) \
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(TPM_TIS_ADDR_BASE + ((LOCTY) << 12) + REG)
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#define DEBUG_TIS_TEST 0
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#define DPRINTF(fmt, ...) do { \
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if (DEBUG_TIS_TEST) { \
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printf(fmt, ## __VA_ARGS__); \
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} \
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} while (0)
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#define DPRINTF_ACCESS \
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DPRINTF("%s: %d: locty=%d l=%d access=0x%02x pending_request_flag=0x%x\n", \
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__func__, __LINE__, locty, l, access, pending_request_flag)
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#define DPRINTF_STS \
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DPRINTF("%s: %d: sts = 0x%08x\n", __func__, __LINE__, sts)
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static const uint8_t TPM_CMD[12] =
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"\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00";
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static void tpm_tis_test_check_localities(const void *data)
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{
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uint8_t locty;
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uint8_t access;
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uint32_t ifaceid;
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uint32_t capability;
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uint32_t didvid;
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uint32_t rid;
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for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES; locty++) {
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access = readb(TIS_REG(0, TPM_TIS_REG_ACCESS));
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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capability = readl(TIS_REG(locty, TPM_TIS_REG_INTF_CAPABILITY));
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g_assert_cmpint(capability, ==, TPM_TIS_CAPABILITIES_SUPPORTED2_0);
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ifaceid = readl(TIS_REG(locty, TPM_TIS_REG_INTERFACE_ID));
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g_assert_cmpint(ifaceid, ==, TPM_TIS_IFACE_ID_SUPPORTED_FLAGS2_0);
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didvid = readl(TIS_REG(locty, TPM_TIS_REG_DID_VID));
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g_assert_cmpint(didvid, !=, 0);
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g_assert_cmpint(didvid, !=, 0xffffffff);
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rid = readl(TIS_REG(locty, TPM_TIS_REG_RID));
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g_assert_cmpint(rid, !=, 0);
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g_assert_cmpint(rid, !=, 0xffffffff);
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}
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}
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static void tpm_tis_test_check_access_reg(const void *data)
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{
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uint8_t locty;
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uint8_t access;
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/* do not test locality 4 (hw only) */
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for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES - 1; locty++) {
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access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* request use of locality */
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writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
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access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_ACTIVE_LOCALITY |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* release access */
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writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS),
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TPM_TIS_ACCESS_ACTIVE_LOCALITY);
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access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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}
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}
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/*
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* Test case for seizing access by a higher number locality
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*/
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static void tpm_tis_test_check_access_reg_seize(const void *data)
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{
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int locty, l;
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uint8_t access;
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uint8_t pending_request_flag;
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/* do not test locality 4 (hw only) */
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for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES - 1; locty++) {
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pending_request_flag = 0;
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access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* request use of locality */
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writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
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access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_ACTIVE_LOCALITY |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* lower localities cannot seize access */
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for (l = 0; l < locty; l++) {
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/* lower locality is not active */
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access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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pending_request_flag |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* try to request use from 'l' */
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writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
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/* requesting use from 'l' was not possible;
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we must see REQUEST_USE and possibly PENDING_REQUEST */
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access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_REQUEST_USE |
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pending_request_flag |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* locality 'locty' must be unchanged;
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we must see PENDING_REQUEST */
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access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_ACTIVE_LOCALITY |
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TPM_TIS_ACCESS_PENDING_REQUEST |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* try to seize from 'l' */
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writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_SEIZE);
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/* seize from 'l' was not possible */
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access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_REQUEST_USE |
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pending_request_flag |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* locality 'locty' must be unchanged */
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access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_ACTIVE_LOCALITY |
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TPM_TIS_ACCESS_PENDING_REQUEST |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* on the next loop we will have a PENDING_REQUEST flag
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set for locality 'l' */
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pending_request_flag = TPM_TIS_ACCESS_PENDING_REQUEST;
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}
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/* higher localities can 'seize' access but not 'request use';
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note: this will activate first l+1, then l+2 etc. */
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for (l = locty + 1; l < TPM_TIS_NUM_LOCALITIES - 1; l++) {
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/* try to 'request use' from 'l' */
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writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
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/* requesting use from 'l' was not possible; we should see
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REQUEST_USE and may see PENDING_REQUEST */
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access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_REQUEST_USE |
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pending_request_flag |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* locality 'l-1' must be unchanged; we should always
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see PENDING_REQUEST from 'l' requesting access */
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access = readb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_ACTIVE_LOCALITY |
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TPM_TIS_ACCESS_PENDING_REQUEST |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* try to seize from 'l' */
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writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_SEIZE);
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/* seize from 'l' was possible */
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access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_ACTIVE_LOCALITY |
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pending_request_flag |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* l - 1 should show that it has BEEN_SEIZED */
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access = readb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_BEEN_SEIZED |
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pending_request_flag |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* clear the BEEN_SEIZED flag and make sure it's gone */
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writeb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS),
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TPM_TIS_ACCESS_BEEN_SEIZED);
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access = readb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS));
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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pending_request_flag |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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}
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/* PENDING_REQUEST will not be set if locty = 0 since all localities
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were active; in case of locty = 1, locality 0 will be active
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but no PENDING_REQUEST anywhere */
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if (locty <= 1) {
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pending_request_flag = 0;
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}
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/* release access from l - 1; this activates locty - 1 */
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l--;
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access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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DPRINTF("%s: %d: relinquishing control on l = %d\n",
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__func__, __LINE__, l);
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writeb(TIS_REG(l, TPM_TIS_REG_ACCESS),
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TPM_TIS_ACCESS_ACTIVE_LOCALITY);
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access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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pending_request_flag |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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for (l = locty - 1; l >= 0; l--) {
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access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_ACTIVE_LOCALITY |
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pending_request_flag |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* release this locality */
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writeb(TIS_REG(l, TPM_TIS_REG_ACCESS),
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TPM_TIS_ACCESS_ACTIVE_LOCALITY);
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if (l == 1) {
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pending_request_flag = 0;
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}
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}
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/* no locality may be active now */
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for (l = 0; l < TPM_TIS_NUM_LOCALITIES - 1; l++) {
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access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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}
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}
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}
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/*
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* Test case for getting access when higher number locality relinquishes access
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*/
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static void tpm_tis_test_check_access_reg_release(const void *data)
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{
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int locty, l;
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uint8_t access;
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uint8_t pending_request_flag;
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/* do not test locality 4 (hw only) */
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for (locty = TPM_TIS_NUM_LOCALITIES - 2; locty >= 0; locty--) {
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pending_request_flag = 0;
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access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* request use of locality */
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writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
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access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS));
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_ACTIVE_LOCALITY |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* request use of all other localities */
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for (l = 0; l < TPM_TIS_NUM_LOCALITIES - 1; l++) {
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if (l == locty) {
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continue;
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}
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/* request use of locality 'l' -- we MUST see REQUEST USE and
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may see PENDING_REQUEST */
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writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
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access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_REQUEST_USE |
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pending_request_flag |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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pending_request_flag = TPM_TIS_ACCESS_PENDING_REQUEST;
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}
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/* release locality 'locty' */
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writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS),
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TPM_TIS_ACCESS_ACTIVE_LOCALITY);
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/* highest locality should now be active; release it and make sure the
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next higest locality is active afterwards */
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for (l = TPM_TIS_NUM_LOCALITIES - 2; l >= 0; l--) {
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if (l == locty) {
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continue;
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}
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/* 'l' should be active now */
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access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_ACTIVE_LOCALITY |
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pending_request_flag |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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/* 'l' relinquishes access */
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writeb(TIS_REG(l, TPM_TIS_REG_ACCESS),
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TPM_TIS_ACCESS_ACTIVE_LOCALITY);
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access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS));
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DPRINTF_ACCESS;
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if (l == 1 || (locty <= 1 && l == 2)) {
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pending_request_flag = 0;
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}
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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pending_request_flag |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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}
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}
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}
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/*
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* Test case for transmitting packets
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*/
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static void tpm_tis_test_check_transmit(const void *data)
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{
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const TestState *s = data;
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uint8_t access;
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uint32_t sts;
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uint16_t bcount;
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size_t i;
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/* request use of locality 0 */
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writeb(TIS_REG(0, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE);
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access = readb(TIS_REG(0, TPM_TIS_REG_ACCESS));
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g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS |
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TPM_TIS_ACCESS_ACTIVE_LOCALITY |
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TPM_TIS_ACCESS_TPM_ESTABLISHMENT);
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sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
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DPRINTF_STS;
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g_assert_cmpint(sts & 0xff, ==, 0);
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g_assert_cmpint(sts & TPM_TIS_STS_TPM_FAMILY_MASK, ==,
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TPM_TIS_STS_TPM_FAMILY2_0);
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bcount = (sts >> 8) & 0xffff;
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g_assert_cmpint(bcount, >=, 128);
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writel(TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_COMMAND_READY);
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sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
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DPRINTF_STS;
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g_assert_cmpint(sts & 0xff, ==, TPM_TIS_STS_COMMAND_READY);
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/* transmit command */
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for (i = 0; i < sizeof(TPM_CMD); i++) {
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writeb(TIS_REG(0, TPM_TIS_REG_DATA_FIFO), TPM_CMD[i]);
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sts = readl(TIS_REG(0, TPM_TIS_REG_STS));
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DPRINTF_STS;
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if (i < sizeof(TPM_CMD) - 1) {
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g_assert_cmpint(sts & 0xff, ==,
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TPM_TIS_STS_EXPECT | TPM_TIS_STS_VALID);
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} else {
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g_assert_cmpint(sts & 0xff, ==, TPM_TIS_STS_VALID);
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}
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g_assert_cmpint((sts >> 8) & 0xffff, ==, --bcount);
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}
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/* start processing */
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writeb(TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_TPM_GO);
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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);
|
|
test.data_cond_signal = false;
|
|
|
|
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;
|
|
}
|