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Diffstat (limited to 'tests/qtest/tpm-tis-util.c')
| -rw-r--r-- | tests/qtest/tpm-tis-util.c | 451 |
1 files changed, 451 insertions, 0 deletions
diff --git a/tests/qtest/tpm-tis-util.c b/tests/qtest/tpm-tis-util.c new file mode 100644 index 000000000..939893bf0 --- /dev/null +++ b/tests/qtest/tpm-tis-util.c @@ -0,0 +1,451 @@ +/* + * QTest testcase for TPM TIS: common test functions used for both + * the ISA and SYSBUS devices + * + * 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-single.h" +#include "qemu/module.h" +#include "tpm-emu.h" +#include "tpm-util.h" +#include "tpm-tis-util.h" + +#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"; + +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); + } +} + +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 + */ +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 + */ +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 + */ +void tpm_tis_test_check_transmit(const void *data) +{ + const TPMTestState *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)); +} |