diff options
Diffstat (limited to 'test/usb_pd.c')
| -rw-r--r-- | test/usb_pd.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/test/usb_pd.c b/test/usb_pd.c new file mode 100644 index 0000000000..fd10d44840 --- /dev/null +++ b/test/usb_pd.c @@ -0,0 +1,204 @@ +/* Copyright 2014 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * Test USB PD module. + */ + +#include "common.h" +#include "crc.h" +#include "task.h" +#include "test_util.h" +#include "timer.h" +#include "usb_pd.h" +#include "usb_pd_config.h" +#include "usb_pd_test_util.h" +#include "util.h" + +struct pd_port_t { + int host_mode; + int cc_volt[2]; /* -1 for Hi-Z */ + int has_vbus; + int msg_tx_id; + int msg_rx_id; + int polarity; +} pd_port[PD_PORT_COUNT]; + +/* Mock functions */ + +int pd_adc_read(int port, int cc) +{ + int val = pd_port[port].cc_volt[cc]; + if (val == -1) + return pd_port[port].host_mode ? 3000 : 0; + return val; +} + +int pd_snk_is_vbus_provided(int port) +{ + return pd_port[port].has_vbus; +} + +void pd_set_host_mode(int port, int enable) +{ + pd_port[port].host_mode = enable; +} + +void pd_select_polarity(int port, int polarity) +{ + pd_port[port].polarity = polarity; +} + +/* Tests */ + +void inc_tx_id(int port) +{ + pd_port[port].msg_tx_id = (pd_port[port].msg_tx_id + 1) % 7; +} + +void inc_rx_id(int port) +{ + pd_port[port].msg_rx_id = (pd_port[port].msg_rx_id + 1) % 7; +} + +static void init_ports(void) +{ + int i; + + for (i = 0; i < PD_PORT_COUNT; ++i) { + pd_port[i].host_mode = 0; + pd_port[i].cc_volt[0] = pd_port[i].cc_volt[1] = -1; + pd_port[i].has_vbus = 0; + } +} + +static void simulate_rx_msg(int port, uint16_t header, int cnt, + const uint32_t *data) +{ + int i; + + pd_test_rx_set_preamble(port, 1); + pd_test_rx_msg_append_sop(port); + pd_test_rx_msg_append_short(port, header); + + crc32_init(); + crc32_hash16(header); + for (i = 0; i < cnt; ++i) { + pd_test_rx_msg_append_word(port, data[i]); + crc32_hash32(data[i]); + } + pd_test_rx_msg_append_word(port, crc32_result()); + + pd_test_rx_msg_append_eop(port); + + pd_simulate_rx(port); +} + +static void simulate_source_cap(int port) +{ + uint16_t header = PD_HEADER(PD_DATA_SOURCE_CAP, PD_ROLE_SOURCE, + pd_port[port].msg_rx_id, pd_src_pdo_cnt); + simulate_rx_msg(port, header, pd_src_pdo_cnt, pd_src_pdo); +} + +static void simulate_goodcrc(int port, int role, int id) +{ + simulate_rx_msg(port, PD_HEADER(PD_CTRL_GOOD_CRC, role, id, 0), + 0, NULL); +} + +static int verify_goodcrc(int port, int role, int id) +{ + return pd_test_tx_msg_verify_sop(0) && + pd_test_tx_msg_verify_short(0, PD_HEADER(PD_CTRL_GOOD_CRC, + role, id, 0)) && + pd_test_tx_msg_verify_crc(0) && + pd_test_tx_msg_verify_eop(0); +} + +static void plug_in_source(int port, int polarity) +{ + pd_port[port].has_vbus = 1; + pd_port[port].cc_volt[polarity] = 3000; +} + +static void plug_in_sink(int port, int polarity) +{ + pd_port[port].has_vbus = 0; + pd_port[port].cc_volt[polarity] = 0; +} + +static void unplug(int port) +{ + pd_port[port].has_vbus = 0; + pd_port[port].cc_volt[0] = -1; + pd_port[port].cc_volt[1] = -1; + task_wake(PORT_TO_TASK_ID(port)); + usleep(30 * MSEC); +} + +static int test_request(void) +{ + plug_in_source(0, 0); + task_wake(PORT_TO_TASK_ID(0)); + usleep(30 * MSEC); + TEST_ASSERT(pd_port[0].polarity == 0); + + simulate_source_cap(0); + task_wait_event(3 * MSEC); + TEST_ASSERT(verify_goodcrc(0, PD_ROLE_SINK, pd_port[0].msg_rx_id)); + task_wake(PORT_TO_TASK_ID(0)); + task_wait_event(35 * MSEC); /* tSenderResponse: 24~30 ms */ + inc_rx_id(0); + + /* Process the request */ + TEST_ASSERT(pd_test_tx_msg_verify_sop(0)); + TEST_ASSERT(pd_test_tx_msg_verify_short(0, + PD_HEADER(PD_DATA_REQUEST, PD_ROLE_SINK, + pd_port[0].msg_tx_id, 1))); + TEST_ASSERT(pd_test_tx_msg_verify_word(0, RDO_FIXED(2, 450, 900, 0))); + TEST_ASSERT(pd_test_tx_msg_verify_crc(0)); + TEST_ASSERT(pd_test_tx_msg_verify_eop(0)); + inc_tx_id(0); + unplug(0); + return EC_SUCCESS; +} + +static int test_sink(void) +{ + int i; + + plug_in_sink(1, 1); + task_wake(PORT_TO_TASK_ID(1)); + task_wait_event(250 * MSEC); /* tTypeCSinkWaitCap: 210~250 ms */ + TEST_ASSERT(pd_port[1].polarity == 1); + + TEST_ASSERT(pd_test_tx_msg_verify_sop(1)); + TEST_ASSERT(pd_test_tx_msg_verify_short(1, + PD_HEADER(PD_DATA_SOURCE_CAP, PD_ROLE_SOURCE, + pd_port[1].msg_tx_id, pd_src_pdo_cnt))); + for (i = 0; i < pd_src_pdo_cnt; ++i) + TEST_ASSERT(pd_test_tx_msg_verify_word(1, pd_src_pdo[i])); + TEST_ASSERT(pd_test_tx_msg_verify_crc(1)); + TEST_ASSERT(pd_test_tx_msg_verify_eop(1)); + + simulate_goodcrc(1, PD_ROLE_SINK, pd_port[1].msg_tx_id); + task_wake(PORT_TO_TASK_ID(1)); + usleep(30 * MSEC); + inc_tx_id(1); + + unplug(1); + return EC_SUCCESS; +} + +void run_test(void) +{ + test_reset(); + init_ports(); + pd_set_dual_role(PD_DRP_TOGGLE_ON); + + RUN_TEST(test_request); + RUN_TEST(test_sink); + + test_print_result(); +} |