From 9d81aa3c0fe7480d722517f69e1bcb4aeaaf859c Mon Sep 17 00:00:00 2001 From: Stefan Berger Date: Fri, 31 Mar 2023 13:30:51 -0400 Subject: [PATCH] qtest: Add a test case for TPM TIS I2C connected to Aspeed I2C controller MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Add a test case for the TPM TIS I2C device exercising most of its functionality, including localities. Signed-off-by: Stefan Berger Tested-by: Cédric Le Goater Tested-by: Ninad Palsule Message-id: 20230331173051.3857801-4-stefanb@linux.ibm.com --- tests/qtest/meson.build | 3 + tests/qtest/tpm-tis-i2c-test.c | 663 +++++++++++++++++++++++++++++++++ 2 files changed, 666 insertions(+) create mode 100644 tests/qtest/tpm-tis-i2c-test.c diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build index 85ea4e8d99..cfc66ade6f 100644 --- a/tests/qtest/meson.build +++ b/tests/qtest/meson.build @@ -200,6 +200,7 @@ qtests_arm = \ (config_all_devices.has_key('CONFIG_ASPEED_SOC') ? qtests_aspeed : []) + \ (config_all_devices.has_key('CONFIG_NPCM7XX') ? qtests_npcm7xx : []) + \ (config_all_devices.has_key('CONFIG_GENERIC_LOADER') ? ['hexloader-test'] : []) + \ + (config_all_devices.has_key('CONFIG_TPM_TIS_I2C') ? ['tpm-tis-i2c-test'] : []) + \ ['arm-cpu-features', 'microbit-test', 'test-arm-mptimer', @@ -212,6 +213,7 @@ qtests_aarch64 = \ ['tpm-tis-device-test', 'tpm-tis-device-swtpm-test'] : []) + \ (config_all_devices.has_key('CONFIG_XLNX_ZYNQMP_ARM') ? ['xlnx-can-test', 'fuzz-xlnx-dp-test'] : []) + \ (config_all_devices.has_key('CONFIG_RASPI') ? ['bcm2835-dma-test'] : []) + \ + (config_all_devices.has_key('CONFIG_TPM_TIS_I2C') ? ['tpm-tis-i2c-test'] : []) + \ ['arm-cpu-features', 'numa-test', 'boot-serial-test', @@ -304,6 +306,7 @@ qtests = { 'tpm-crb-test': [io, tpmemu_files], 'tpm-tis-swtpm-test': [io, tpmemu_files, 'tpm-tis-util.c'], 'tpm-tis-test': [io, tpmemu_files, 'tpm-tis-util.c'], + 'tpm-tis-i2c-test': [io, tpmemu_files, 'qtest_aspeed.c'], 'tpm-tis-device-swtpm-test': [io, tpmemu_files, 'tpm-tis-util.c'], 'tpm-tis-device-test': [io, tpmemu_files, 'tpm-tis-util.c'], 'vmgenid-test': files('boot-sector.c', 'acpi-utils.c'), diff --git a/tests/qtest/tpm-tis-i2c-test.c b/tests/qtest/tpm-tis-i2c-test.c new file mode 100644 index 0000000000..7a590ac551 --- /dev/null +++ b/tests/qtest/tpm-tis-i2c-test.c @@ -0,0 +1,663 @@ +/* + * QTest testcases for TPM TIS on I2C (derived from TPM TIS test) + * + * Copyright (c) 2023 IBM Corporation + * Copyright (c) 2023 Red Hat, Inc. + * + * Authors: + * Stefan Berger + * Marc-André Lureau + * + * 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 + +#include "libqtest-single.h" +#include "hw/acpi/tpm.h" +#include "hw/pci/pci_ids.h" +#include "qtest_aspeed.h" +#include "tpm-emu.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) + +#define I2C_SLAVE_ADDR 0x2e +#define I2C_DEV_BUS_NUM 10 + +static const uint8_t TPM_CMD[12] = + "\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00"; + +static uint32_t aspeed_bus_addr; + +static uint8_t cur_locty = 0xff; + +static void tpm_tis_i2c_set_locty(uint8_t locty) +{ + if (cur_locty != locty) { + cur_locty = locty; + aspeed_i2c_writeb(global_qtest, aspeed_bus_addr, I2C_SLAVE_ADDR, + TPM_I2C_REG_LOC_SEL, locty); + } +} + +static uint8_t tpm_tis_i2c_readb(uint8_t locty, uint8_t reg) +{ + tpm_tis_i2c_set_locty(locty); + return aspeed_i2c_readb(global_qtest, aspeed_bus_addr, I2C_SLAVE_ADDR, reg); +} + +static uint16_t tpm_tis_i2c_readw(uint8_t locty, uint8_t reg) +{ + tpm_tis_i2c_set_locty(locty); + return aspeed_i2c_readw(global_qtest, aspeed_bus_addr, I2C_SLAVE_ADDR, reg); +} + +static uint32_t tpm_tis_i2c_readl(uint8_t locty, uint8_t reg) +{ + tpm_tis_i2c_set_locty(locty); + return aspeed_i2c_readl(global_qtest, aspeed_bus_addr, I2C_SLAVE_ADDR, reg); +} + +static void tpm_tis_i2c_writeb(uint8_t locty, uint8_t reg, uint8_t v) +{ + if (reg != TPM_I2C_REG_LOC_SEL) { + tpm_tis_i2c_set_locty(locty); + } + aspeed_i2c_writeb(global_qtest, aspeed_bus_addr, I2C_SLAVE_ADDR, reg, v); +} + +static void tpm_tis_i2c_writel(uint8_t locty, uint8_t reg, uint32_t v) +{ + if (reg != TPM_I2C_REG_LOC_SEL) { + tpm_tis_i2c_set_locty(locty); + } + aspeed_i2c_writel(global_qtest, aspeed_bus_addr, I2C_SLAVE_ADDR, reg, v); +} + +static void tpm_tis_i2c_test_basic(const void *data) +{ + uint8_t access; + uint32_t v, v2; + + /* + * All register accesses below must work without locality 0 being the + * active locality. Therefore, ensure access is released. + */ + tpm_tis_i2c_writeb(0, TPM_I2C_REG_ACCESS, + TPM_TIS_ACCESS_ACTIVE_LOCALITY); + access = tpm_tis_i2c_readb(0, TPM_I2C_REG_ACCESS); + g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | + TPM_TIS_ACCESS_TPM_ESTABLISHMENT); + + /* read interrupt capability -- none are supported */ + v = tpm_tis_i2c_readl(0, TPM_I2C_REG_INT_CAPABILITY); + g_assert_cmpint(v, ==, 0); + + /* try to enable all interrupts */ + tpm_tis_i2c_writel(0, TPM_I2C_REG_INT_ENABLE, 0xffffffff); + v = tpm_tis_i2c_readl(0, TPM_I2C_REG_INT_ENABLE); + /* none could be enabled */ + g_assert_cmpint(v, ==, 0); + + /* enable csum */ + tpm_tis_i2c_writeb(0, TPM_I2C_REG_DATA_CSUM_ENABLE, TPM_DATA_CSUM_ENABLED); + /* check csum enable register has bit 0 set */ + v = tpm_tis_i2c_readb(0, TPM_I2C_REG_DATA_CSUM_ENABLE); + g_assert_cmpint(v, ==, TPM_DATA_CSUM_ENABLED); + /* reading it as 32bit register returns same result */ + v = tpm_tis_i2c_readl(0, TPM_I2C_REG_DATA_CSUM_ENABLE); + g_assert_cmpint(v, ==, TPM_DATA_CSUM_ENABLED); + + /* disable csum */ + tpm_tis_i2c_writeb(0, TPM_I2C_REG_DATA_CSUM_ENABLE, 0); + /* check csum enable register has bit 0 clear */ + v = tpm_tis_i2c_readb(0, TPM_I2C_REG_DATA_CSUM_ENABLE); + g_assert_cmpint(v, ==, 0); + + /* write to unsupported register '1' */ + tpm_tis_i2c_writel(0, 1, 0x12345678); + v = tpm_tis_i2c_readl(0, 1); + g_assert_cmpint(v, ==, 0xffffffff); + + /* request use of locality */ + tpm_tis_i2c_writeb(0, TPM_I2C_REG_ACCESS, TPM_TIS_ACCESS_REQUEST_USE); + + /* read byte from STS + 3 */ + v = tpm_tis_i2c_readb(0, TPM_I2C_REG_STS + 3); + g_assert_cmpint(v, ==, 0); + + /* check STS after writing to STS + 3 */ + v = tpm_tis_i2c_readl(0, TPM_I2C_REG_STS); + tpm_tis_i2c_writeb(0, TPM_I2C_REG_STS + 3, 0xf); + v2 = tpm_tis_i2c_readl(0, TPM_I2C_REG_STS); + g_assert_cmpint(v, ==, v2); + + /* release access */ + tpm_tis_i2c_writeb(0, TPM_I2C_REG_ACCESS, + TPM_TIS_ACCESS_ACTIVE_LOCALITY); + + /* select locality 5 -- must not be possible */ + tpm_tis_i2c_writeb(0, TPM_I2C_REG_LOC_SEL, 5); + v = tpm_tis_i2c_readb(0, TPM_I2C_REG_LOC_SEL); + g_assert_cmpint(v, ==, 0); +} + +static void tpm_tis_i2c_test_check_localities(const void *data) +{ + uint8_t locty, l; + uint8_t access; + uint32_t capability, i2c_cap; + uint32_t didvid; + uint32_t rid; + + for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES; locty++) { + access = tpm_tis_i2c_readb(locty, TPM_I2C_REG_ACCESS); + g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | + TPM_TIS_ACCESS_TPM_ESTABLISHMENT); + + capability = tpm_tis_i2c_readl(locty, TPM_I2C_REG_INTF_CAPABILITY); + i2c_cap = (TPM_I2C_CAP_INTERFACE_TYPE | + TPM_I2C_CAP_INTERFACE_VER | + TPM_I2C_CAP_TPM2_FAMILY | + TPM_I2C_CAP_LOCALITY_CAP | + TPM_I2C_CAP_BUS_SPEED | + TPM_I2C_CAP_DEV_ADDR_CHANGE); + g_assert_cmpint(capability, ==, i2c_cap); + + didvid = tpm_tis_i2c_readl(locty, TPM_I2C_REG_DID_VID); + g_assert_cmpint(didvid, ==, (1 << 16) | PCI_VENDOR_ID_IBM); + + rid = tpm_tis_i2c_readl(locty, TPM_I2C_REG_RID); + g_assert_cmpint(rid, !=, 0); + g_assert_cmpint(rid, !=, 0xffffffff); + + /* locality selection must be at locty */ + l = tpm_tis_i2c_readb(locty, TPM_I2C_REG_LOC_SEL); + g_assert_cmpint(l, ==, locty); + } +} + +static void tpm_tis_i2c_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 = tpm_tis_i2c_readb(locty, TPM_I2C_REG_ACCESS); + g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | + TPM_TIS_ACCESS_TPM_ESTABLISHMENT); + + /* request use of locality */ + tpm_tis_i2c_writeb(locty, TPM_I2C_REG_ACCESS, + TPM_TIS_ACCESS_REQUEST_USE); + + access = tpm_tis_i2c_readb(locty, TPM_I2C_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 */ + tpm_tis_i2c_writeb(locty, TPM_I2C_REG_ACCESS, + TPM_TIS_ACCESS_ACTIVE_LOCALITY); + access = tpm_tis_i2c_readb(locty, TPM_I2C_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_i2c_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 = tpm_tis_i2c_readb(locty, TPM_I2C_REG_ACCESS); + g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | + TPM_TIS_ACCESS_TPM_ESTABLISHMENT); + + /* request use of locality */ + tpm_tis_i2c_writeb(locty, + TPM_I2C_REG_ACCESS, TPM_TIS_ACCESS_REQUEST_USE); + access = tpm_tis_i2c_readb(locty, TPM_I2C_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 = tpm_tis_i2c_readb(l, TPM_I2C_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' */ + tpm_tis_i2c_writeb(l, + TPM_I2C_REG_ACCESS, + TPM_TIS_ACCESS_REQUEST_USE); + + /* + * requesting use from 'l' was not possible; + * we must see REQUEST_USE and possibly PENDING_REQUEST + */ + access = tpm_tis_i2c_readb(l, TPM_I2C_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 = tpm_tis_i2c_readb(locty, TPM_I2C_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' */ + tpm_tis_i2c_writeb(l, + TPM_I2C_REG_ACCESS, TPM_TIS_ACCESS_SEIZE); + /* seize from 'l' was not possible */ + access = tpm_tis_i2c_readb(l, TPM_I2C_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 = tpm_tis_i2c_readb(locty, TPM_I2C_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' */ + tpm_tis_i2c_writeb(l, TPM_I2C_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 = tpm_tis_i2c_readb(l, TPM_I2C_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 = tpm_tis_i2c_readb(l - 1, TPM_I2C_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' */ + tpm_tis_i2c_writeb(l, TPM_I2C_REG_ACCESS, TPM_TIS_ACCESS_SEIZE); + + /* seize from 'l' was possible */ + access = tpm_tis_i2c_readb(l, TPM_I2C_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 = tpm_tis_i2c_readb(l - 1, TPM_I2C_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 */ + tpm_tis_i2c_writeb(l - 1, TPM_I2C_REG_ACCESS, + TPM_TIS_ACCESS_BEEN_SEIZED); + + access = tpm_tis_i2c_readb(l - 1, TPM_I2C_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 = tpm_tis_i2c_readb(l, TPM_I2C_REG_ACCESS); + DPRINTF_ACCESS; + + DPRINTF("%s: %d: relinquishing control on l = %d\n", + __func__, __LINE__, l); + tpm_tis_i2c_writeb(l, TPM_I2C_REG_ACCESS, + TPM_TIS_ACCESS_ACTIVE_LOCALITY); + + access = tpm_tis_i2c_readb(l, TPM_I2C_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 = tpm_tis_i2c_readb(l, TPM_I2C_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 */ + tpm_tis_i2c_writeb(l, TPM_I2C_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 = tpm_tis_i2c_readb(l, TPM_I2C_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_i2c_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 = tpm_tis_i2c_readb(locty, TPM_I2C_REG_ACCESS); + g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | + TPM_TIS_ACCESS_TPM_ESTABLISHMENT); + + /* request use of locality */ + tpm_tis_i2c_writeb(locty, TPM_I2C_REG_ACCESS, + TPM_TIS_ACCESS_REQUEST_USE); + access = tpm_tis_i2c_readb(locty, TPM_I2C_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 + */ + tpm_tis_i2c_writeb(l, TPM_I2C_REG_ACCESS, + TPM_TIS_ACCESS_REQUEST_USE); + access = tpm_tis_i2c_readb(l, TPM_I2C_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' */ + tpm_tis_i2c_writeb(locty, TPM_I2C_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 = tpm_tis_i2c_readb(l, TPM_I2C_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 */ + tpm_tis_i2c_writeb(l, TPM_I2C_REG_ACCESS, + TPM_TIS_ACCESS_ACTIVE_LOCALITY); + access = tpm_tis_i2c_readb(l, TPM_I2C_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_i2c_test_check_transmit(const void *data) +{ + const TPMTestState *s = data; + uint8_t access; + uint32_t sts, v; + uint16_t bcount, csum, bcount2; + size_t i; + + /* enable csum */ + tpm_tis_i2c_writeb(0, TPM_I2C_REG_DATA_CSUM_ENABLE, TPM_DATA_CSUM_ENABLED); + /* check csum enable register has bit 0 set */ + v = tpm_tis_i2c_readb(0, TPM_I2C_REG_DATA_CSUM_ENABLE); + g_assert_cmpint(v, ==, TPM_DATA_CSUM_ENABLED); + /* reading it as 32bit register returns same result */ + v = tpm_tis_i2c_readl(0, TPM_I2C_REG_DATA_CSUM_ENABLE); + g_assert_cmpint(v, ==, TPM_DATA_CSUM_ENABLED); + + /* request use of locality 0 */ + tpm_tis_i2c_writeb(0, TPM_I2C_REG_ACCESS, TPM_TIS_ACCESS_REQUEST_USE); + access = tpm_tis_i2c_readb(0, TPM_I2C_REG_ACCESS); + g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | + TPM_TIS_ACCESS_ACTIVE_LOCALITY | + TPM_TIS_ACCESS_TPM_ESTABLISHMENT); + + sts = tpm_tis_i2c_readl(0, TPM_I2C_REG_STS); + DPRINTF_STS; + + g_assert_cmpint(sts & 0xff, ==, 0); + + bcount = (sts >> 8) & 0xffff; + g_assert_cmpint(bcount, >=, 128); + + /* read bcount from STS + 1 must work also */ + bcount2 = tpm_tis_i2c_readw(0, TPM_I2C_REG_STS + 1); + g_assert_cmpint(bcount, ==, bcount2); + + /* ic2 must have bits 26-31 zero */ + g_assert_cmpint(sts & (0x1f << 26), ==, 0); + + tpm_tis_i2c_writel(0, TPM_I2C_REG_STS, TPM_TIS_STS_COMMAND_READY); + sts = tpm_tis_i2c_readl(0, TPM_I2C_REG_STS); + DPRINTF_STS; + g_assert_cmpint(sts & 0xff, ==, TPM_TIS_STS_COMMAND_READY); + + /* transmit command */ + for (i = 0; i < sizeof(TPM_CMD); i++) { + tpm_tis_i2c_writeb(0, TPM_I2C_REG_DATA_FIFO, TPM_CMD[i]); + sts = tpm_tis_i2c_readl(0, TPM_I2C_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); + } + /* read the checksum */ + csum = tpm_tis_i2c_readw(0, TPM_I2C_REG_DATA_CSUM_GET); + g_assert_cmpint(csum, ==, 0x6733); + + /* start processing */ + tpm_tis_i2c_writeb(0, TPM_I2C_REG_STS, TPM_TIS_STS_TPM_GO); + + uint64_t end_time = g_get_monotonic_time() + 50 * G_TIME_SPAN_SECOND; + do { + sts = tpm_tis_i2c_readl(0, TPM_I2C_REG_STS); + if ((sts & TPM_TIS_STS_DATA_AVAILABLE) != 0) { + break; + } + } while (g_get_monotonic_time() < end_time); + + sts = tpm_tis_i2c_readl(0, TPM_I2C_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] = tpm_tis_i2c_readb(0, TPM_I2C_REG_DATA_FIFO); + sts = tpm_tis_i2c_readl(0, TPM_I2C_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 */ + tpm_tis_i2c_writeb(0, + TPM_I2C_REG_ACCESS, TPM_TIS_ACCESS_ACTIVE_LOCALITY); + access = tpm_tis_i2c_readb(0, TPM_I2C_REG_ACCESS); +} + +int main(int argc, char **argv) +{ + int ret; + char *args; + char *tmp_path = g_dir_make_tmp("qemu-tpm-tis-i2c-test.XXXXXX", NULL); + GThread *thread; + TPMTestState 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; + test.tpm_version = TPM_VERSION_2_0; + + thread = g_thread_new(NULL, tpm_emu_ctrl_thread, &test); + tpm_emu_test_wait_cond(&test); + + aspeed_bus_addr = ast2600_i2c_calc_bus_addr(I2C_DEV_BUS_NUM); + + args = g_strdup_printf( + "-machine rainier-bmc -accel tcg " + "-chardev socket,id=chr,path=%s " + "-tpmdev emulator,id=tpm0,chardev=chr " + "-device tpm-tis-i2c,tpmdev=tpm0,bus=aspeed.i2c.bus.%d,address=0x%x", + test.addr->u.q_unix.path, + I2C_DEV_BUS_NUM, + I2C_SLAVE_ADDR); + qtest_start(args); + + qtest_add_data_func("/tpm-tis-i2c/test_basic", &test, + tpm_tis_i2c_test_basic); + + qtest_add_data_func("/tpm-tis-i2c/test_check_localities", &test, + tpm_tis_i2c_test_check_localities); + + qtest_add_data_func("/tpm-tis-i2c/check_access_reg", &test, + tpm_tis_i2c_test_check_access_reg); + + qtest_add_data_func("/tpm-tis-i2c/check_access_reg_seize", &test, + tpm_tis_i2c_test_check_access_reg_seize); + + qtest_add_data_func("/tpm-tis-i2c/check_access_reg_release", &test, + tpm_tis_i2c_test_check_access_reg_release); + + qtest_add_data_func("/tpm-tis-i2c/test_check_transmit", &test, + tpm_tis_i2c_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; +} -- 2.39.2