static int test_request(void)
{
uint32_t expected_rdo = RDO_FIXED(1, 900, 900, RDO_CAP_MISMATCH);
plug_in_source(0, 0);
task_wake(PD_PORT_TO_TASK_ID(0));
task_wait_event(2 * PD_T_CC_DEBOUNCE + 100 * MSEC);
TEST_ASSERT(pd_port[0].polarity == 0);
/* We're in SNK_DISCOVERY now. Let's send the source cap. */
simulate_source_cap(0);
task_wait_event(30 * MSEC);
TEST_ASSERT(verify_goodcrc(0, PD_ROLE_SINK, pd_port[0].msg_rx_id));
/* Wait for the power request */
task_wake(PD_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_ROLE_UFP,
pd_port[0].msg_tx_id, 1)));
TEST_ASSERT(pd_test_tx_msg_verify_word(0, expected_rdo));
TEST_ASSERT(pd_test_tx_msg_verify_crc(0));
TEST_ASSERT(pd_test_tx_msg_verify_eop(0));
inc_tx_id(0);
/* We're done */
unplug(0);
return EC_SUCCESS;
}
static int test_sink(void)
{
int i;
plug_in_sink(1, 1);
task_wake(PD_PORT_TO_TASK_ID(1));
task_wait_event(250 * MSEC); /* tTypeCSinkWaitCap: 210~250 ms */
TEST_ASSERT(pd_port[1].polarity == 1);
/* The source cap should be sent */
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_ROLE_DFP, 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));
/* Looks good. Ack the source cap. */
simulate_goodcrc(1, PD_ROLE_SINK, pd_port[1].msg_tx_id);
task_wake(PD_PORT_TO_TASK_ID(1));
usleep(30 * MSEC);
inc_tx_id(1);
/* We're done */
unplug(1);
return EC_SUCCESS;
}
static int test_partial_load(void)
{
/* We have a 3A charger, but we just want 1.5A */
system_load_current_ma = 1500;
plug_charger(CHARGE_SUPPLIER_TEST4, 0, 500, 3000, 2500);
/* We should end up with a little bit more than 1.5A */
TEST_ASSERT(wait_stable_no_overcurrent());
TEST_ASSERT(is_in_range(charge_limit_ma, 1500, 1600));
/* Ok someone just started watching YouTube */
system_load_current_ma = 2000;
TEST_ASSERT(wait_stable_no_overcurrent());
TEST_ASSERT(is_in_range(charge_limit_ma, 2000, 2100));
/* Somehow the system load increases again */
system_load_current_ma = 2600;
while (task_wait_event(RAMP_STABLE_DELAY) == TASK_EVENT_OVERCURRENT) {
/* Charger goes away but comes back after 0.6 seconds */
unplug_charger();
usleep(MSEC * 600);
plug_charger(CHARGE_SUPPLIER_TEST4, 0, 500, 3000, 2500);
usleep(CHARGE_DETECT_DELAY_TEST);
/* Ramp restarts at 500 mA */
TEST_ASSERT(is_in_range(charge_limit_ma, 500, 700));
}
/* Alright the charger isn't powerful enough, so we'll stop at 2.5A */
TEST_ASSERT(is_in_range(charge_limit_ma, 2300, 2500));
TEST_ASSERT(unplug_charger_and_check());
return EC_SUCCESS;
}
void power_button_task(void)
{
uint64_t t;
uint64_t tsleep;
while (1) {
t = get_time().val;
/* Update state machine */
CPRINTS("PB task %d = %s", pwrbtn_state,
state_names[pwrbtn_state]);
state_machine(t);
/* Sleep until our next timeout */
tsleep = -1;
if (tnext_state && tnext_state < tsleep)
tsleep = tnext_state;
t = get_time().val;
if (tsleep > t) {
unsigned d = tsleep == -1 ? -1 : (unsigned)(tsleep - t);
/*
* (Yes, the conversion from uint64_t to unsigned could
* theoretically overflow if we wanted to sleep for
* more than 2^32 us, but our timeouts are small enough
* that can't happen - and even if it did, we'd just go
* back to sleep after deciding that we woke up too
* early.)
*/
CPRINTS("PB task %d = %s, wait %d", pwrbtn_state,
state_names[pwrbtn_state], d);
task_wait_event(d);
}
}
}
void usb_spi_task(void)
{
/* Remap SPI2 to DMA channels 6 and 7 */
STM32_SYSCFG_CFGR1 |= (1 << 24);
gpio_config_module(MODULE_SPI_MASTER, 1);
/* Set all four SPI pins to high speed */
STM32_GPIO_OSPEEDR(GPIO_B) |= 0xff000000;
/* Enable clocks to SPI2 module */
STM32_RCC_APB1ENR |= STM32_RCC_PB1_SPI2;
/* Reset SPI2 */
STM32_RCC_APB1RSTR |= STM32_RCC_PB1_SPI2;
STM32_RCC_APB1RSTR &= ~STM32_RCC_PB1_SPI2;
spi_enable(1);
while (1) {
task_wait_event(-1);
while (usb_spi_service_request(&usb_spi))
;
}
}
static enum power_state power_wait_s5_rtc_reset(void)
{
static int s5_exit_tries;
/* Wait for S5 exit and then attempt RTC reset */
while ((power_get_signals() & IN_PCH_SLP_S4_DEASSERTED) == 0) {
/* Handle RSMRST passthru event while waiting */
handle_rsmrst(POWER_S5);
if (task_wait_event(SECOND*4) == TASK_EVENT_TIMER) {
CPRINTS("timeout waiting for S5 exit");
chipset_force_g3();
/* Assert RTCRST# and retry 5 times */
board_rtc_reset();
if (++s5_exit_tries > 4) {
s5_exit_tries = 0;
return POWER_G3; /* Stay off */
}
udelay(10 * MSEC);
return POWER_G3S5; /* Power up again */
}
}
s5_exit_tries = 0;
return POWER_S5S3; /* Power up to next state */
}
uint32_t task_wait_event_mask(uint32_t event_mask, int timeout_us)
{
uint64_t deadline = get_time().val + timeout_us;
uint32_t events = 0;
int time_remaining_us = timeout_us;
/* Add the timer event to the mask so we can indicate a timeout */
event_mask |= TASK_EVENT_TIMER;
while (!(events & event_mask)) {
/* Collect events to re-post later */
events |= task_wait_event(time_remaining_us);
time_remaining_us = deadline - get_time().val;
if (timeout_us > 0 && time_remaining_us <= 0) {
/* Ensure we return a TIMER event if we timeout */
events |= TASK_EVENT_TIMER;
break;
}
}
/* Re-post any other events collected */
if (events & ~event_mask)
tasks[task_get_current()].event |= events & ~event_mask;
return events & event_mask;
}
static int command_accel_read_xyz(int argc, char **argv)
{
char *e;
int id, n = 1, ret;
struct motion_sensor_t *sensor;
vector_3_t v;
if (argc < 2)
return EC_ERROR_PARAM_COUNT;
/* First argument is sensor id. */
id = strtoi(argv[1], &e, 0);
if (*e || id < 0 || id >= motion_sensor_count)
return EC_ERROR_PARAM1;
if (argc >= 3)
n = strtoi(argv[2], &e, 0);
sensor = &motion_sensors[id];
while ((n == -1) || (n-- > 0)) {
ret = sensor->drv->read(sensor, v);
if (ret == 0)
ccprintf("Current data %d: %-5d %-5d %-5d\n",
id, v[X], v[Y], v[Z]);
else
ccprintf("vector not ready\n");
ccprintf("Last calib. data %d: %-5d %-5d %-5d\n",
id, sensor->xyz[X], sensor->xyz[Y], sensor->xyz[Z]);
task_wait_event(MIN_MOTION_SENSE_WAIT_TIME);
}
return EC_SUCCESS;
}
uint32_t task_set_event(task_id_t tskid, uint32_t event, int wait)
{
tasks[tskid].event = event;
if (wait)
return task_wait_event(-1);
return 0;
}
void usb_charger_task(void)
{
int port = (task_get_current() == TASK_ID_USB_CHG_P0 ? 0 : 1);
uint32_t evt;
/* Initialize chip and enable interrupts */
pi3usb9281_init(port);
usb_charger_bc12_detect(port);
while (1) {
/* Wait for interrupt */
evt = task_wait_event(-1);
/* Interrupt from the Pericom chip, determine charger type */
if (evt & USB_CHG_EVENT_BC12)
usb_charger_bc12_detect(port);
/*
* Re-enable interrupts on pericom charger detector since the
* chip may periodically reset itself, and come back up with
* registers in default state. TODO(crosbug.com/p/33823): Fix
* these unwanted resets.
*/
if (evt & USB_CHG_EVENT_VBUS) {
pi3usb9281_enable_interrupts(port);
#ifndef CONFIG_USB_PD_TCPM_VBUS
CPRINTS("VBUS p%d %d", port,
pd_snk_is_vbus_provided(port));
#endif
}
}
}
static enum cts_rc timer_calibration_test(void)
{
/* Error margin: +/-2 msec (0.2% for one second) */
const int32_t margin = 2 * MSEC;
int32_t elapsed, delta;
timestamp_t t0, t1;
gpio_enable_interrupt(GPIO_CTS_NOTIFY);
interrupt_enable();
sync();
t0 = get_time();
/* Wait for interrupt */
task_wait_event(-1);
t1 = get_time();
elapsed = (int32_t)(t1.val - t0.val);
delta = elapsed - SECOND;
if (delta < -margin) {
CPRINTS("DUT clock runs too fast: %+d usec", delta);
return CTS_RC_FAILURE;
}
if (margin < delta) {
CPRINTS("DUT clock runs too slow: %+d usec", delta);
return CTS_RC_FAILURE;
}
return CTS_RC_SUCCESS;
}
enum cts_rc test_task_priority(void)
{
uint32_t event;
repeat_count = 2;
task_wake(TASK_ID_A);
task_wake(TASK_ID_C);
event = task_wait_event(5 * SECOND);
if (event != TASK_EVENT_WAKE) {
CPRINTS("Woken up by unexpected event: 0x%08x", event);
return CTS_RC_FAILURE;
}
if (wake_count[0] != repeat_count - 1
|| wake_count[1] != repeat_count - 1) {
CPRINTS("Unexpected counter values: %d %d %d",
wake_count[0], wake_count[1], wake_count[2]);
return CTS_RC_FAILURE;
}
/* TODO: Verify no tasks are ready, no events are pending. */
if (*task_get_event_bitmap(TASK_ID_A)
|| *task_get_event_bitmap(TASK_ID_B)
|| *task_get_event_bitmap(TASK_ID_C)) {
CPRINTS("Events are pending");
return CTS_RC_FAILURE;
}
return CTS_RC_SUCCESS;
}
static int test_overcurrent_after_switch_outlet(void)
{
system_load_current_ma = 3000;
/* Here's a less powerful charger */
plug_charger(CHARGE_SUPPLIER_TEST5, 0, 500, 3000, 1500);
usleep(SECOND * 5);
/* Now the user decides to move it to a nearby outlet */
unplug_charger();
usleep(SECOND * 1.5);
plug_charger(CHARGE_SUPPLIER_TEST5, 0, 500, 3000, 1500);
/* Okay the user is satisified */
while (task_wait_event(RAMP_STABLE_DELAY) == TASK_EVENT_OVERCURRENT) {
/* Charger goes away but comes back after 0.6 seconds */
unplug_charger();
usleep(MSEC * 600);
plug_charger(CHARGE_SUPPLIER_TEST5, 0, 500, 3000, 1500);
usleep(CHARGE_DETECT_DELAY_TEST);
/* Ramp restarts at 500 mA */
TEST_ASSERT(is_in_range(charge_limit_ma, 500, 700));
}
TEST_ASSERT(is_in_range(charge_limit_ma, 1300, 1500));
TEST_ASSERT(unplug_charger_and_check());
return EC_SUCCESS;
}
void *_task_start_impl(void *a)
{
long tid = (long)a;
struct task_args *arg = task_info + tid;
my_task_id = tid;
pthread_mutex_lock(&run_lock);
/* Wait for scheduler */
task_wait_event(1);
tasks[tid].event = 0;
/* Start the task routine */
(arg->routine)(arg->d);
/* Catch exited routine */
while (1)
task_wait_event(-1);
}
void task_tick(void *data)
{
task_wait_event(-1);
ccprintf("\n[starting Task T]\n");
/* Wake up every tick */
while (1)
/* Wait for timer interrupt message */
usleep(3000);
}
static void key_test(va_list args)
{
word c;
do
{
c = *(word *)task_wait_event(E_KEYBOARD);
}
while ((c & 0xff) !='!');
puts("\x7");
}
CONFIG_TASK_LIST
CONFIG_TEST_TASK_LIST
#undef TASK
/* Idle task */
void __idle(void *d)
{
while (1)
task_wait_event(-1);
}
void elan_tp_task(void)
{
elan_tp_init();
gpio_enable_interrupt(GPIO_TOUCHPAD_INT);
while (1) {
task_wait_event(-1);
elan_tp_read_report();
}
}
/**
* Wait for the power button to be released
*
* @param timeout_us Timeout in microseconds, or -1 to wait forever
* @return EC_SUCCESS if ok, or
* EC_ERROR_TIMEOUT if power button failed to release
*/
int power_button_wait_for_release(int timeout_us)
{
timestamp_t deadline;
timestamp_t now = get_time();
deadline.val = now.val + timeout_us;
while (!power_button_is_stable || power_button_is_pressed()) {
now = get_time();
if (timeout_us < 0) {
task_wait_event(-1);
} else if (timestamp_expired(deadline, &now) ||
(task_wait_event(deadline.val - now.val) ==
TASK_EVENT_TIMER)) {
CPRINTS("power button not released in time");
return EC_ERROR_TIMEOUT;
}
}
CPRINTS("power button released in time");
return EC_SUCCESS;
}
/*
* This is for NOT having enough hibernate (more precisely, the stand-by mode)
* wake-up source pin. STM32L100 supports 3 wake-up source pins:
*
* WKUP1 (PA0) -- used for ACOK_PMU
* WKUP2 (PC13) -- used for LID_OPEN
* WKUP3 (PE6) -- cannot be used due to IC package.
*
* However, we need the power button as a wake-up source as well and there is
* no available pin for us (we don't want to move the ACOK_PMU pin).
*
* Fortunately, the STM32L is low-power enough so that we don't need the
* super-low-power mode. So, we fake this hibernate mode and accept the
* following wake-up source.
*
* RTC alarm (faked as well).
* Power button
* Lid open
* AC detected
*
* The original issue is here: crosbug.com/p/25435.
*/
void __enter_hibernate(uint32_t seconds, uint32_t microseconds)
{
int i;
fake_hibernate = 1;
#ifdef CONFIG_POWER_COMMON
/*
* A quick hack to stop annoying messages from charger task.
*
* When the battery is under 3%, the power task would call
* power_off() to shutdown AP. However, the power_off() would
* notify the HOOK_CHIPSET_SHUTDOWN, where the last hook is
* charge_shutdown() and it hibernates the power task (infinite
* loop -- not real CPU hibernate mode). Unfortunately, the
* charger task is still running. It keeps generating annoying
* log message.
*
* Thus, the hack is to set the power state machine (before we
* enter infinite loop) so that the charger task thinks the AP
* is off and stops generating messages.
*/
power_set_state(POWER_G3);
#endif
/*
* Change keyboard outputs to high-Z to reduce power draw.
* We don't need corresponding code to change them back,
* because fake hibernate is always exited with a reboot.
*
* A little hacky to do this here.
*/
for (i = GPIO_KB_OUT00; i < GPIO_KB_OUT00 + KEYBOARD_COLS; i++)
gpio_set_flags(i, GPIO_INPUT);
ccprints("fake hibernate. waits for power button/lid/RTC/AC");
cflush();
if (seconds || microseconds) {
if (seconds)
sleep(seconds);
if (microseconds)
usleep(microseconds);
} else {
while (1)
task_wait_event(-1);
}
ccprints("fake RTC alarm fires. resets EC");
cflush();
system_reset(SYSTEM_RESET_HARD);
}
void gesture_calc(void)
{
/* Only check for gesture if lid is closed and tap detection is on */
if (!tap_detection || lid_is_open())
return;
if (gesture_tap_for_battery()) {
CPRINTS("Double Tap!");
lightbar_sequence(LIGHTBAR_TAP);
/* Don't need to run motion sense task for a while */
task_wait_event(500 * MSEC);
}
}
void pd_command_task(void)
{
/* On startup exchange status with the PD */
pd_exchange_status();
while (1) {
/* Wait for the next command event */
int evt = task_wait_event(-1);
/* Process event to send status to PD */
if (evt & TASK_EVENT_EXCHANGE_PD_STATUS)
pd_exchange_status();
}
}
void als_task(void)
{
int i, val;
uint16_t *mapped = (uint16_t *)host_get_memmap(EC_MEMMAP_ALS);
uint16_t als_data;
while (1) {
for (i = 0; i < EC_ALS_ENTRIES && i < ALS_COUNT; i++) {
als_data = als_read(i, &val) == EC_SUCCESS ? val : 0;
mapped[i] = als_data;
}
task_wait_event(SECOND);
}
}
void host_command_task(void)
{
host_command_init();
while (1) {
/* Wait for the next command event */
int evt = task_wait_event(-1);
/* Process it */
if ((evt & TASK_EVENT_CMD_PENDING) && pending_args) {
pending_args->result =
host_command_process(pending_args);
host_send_response(pending_args);
}
}
}
enum cts_rc test_task_disable_irq(void)
{
uint32_t event;
wake_me_up = 1;
task_disable_irq(CTS_IRQ_NUMBER);
/* Sleep and wait for interrupt. This should time out. */
event = task_wait_event(CTS_INTERRUPT_TRIGGER_DELAY_US * 2);
if (event != TASK_EVENT_TIMER) {
CPRINTS("Woken up by unexpected event: 0x%08x", event);
return CTS_RC_FAILURE;
}
task_enable_irq(CTS_IRQ_NUMBER);
return CTS_RC_SUCCESS;
}
enum cts_rc test_nested_interrupt_high_low(void)
{
uint32_t event;
event = task_wait_event(CTS_INTERRUPT_TRIGGER_DELAY_US * 4);
if (event != TASK_EVENT_TIMER) {
CPRINTS("Woken up by unexpected event: 0x%08x", event);
return CTS_RC_FAILURE;
}
if (memcmp(state, "BCAD", sizeof(state))) {
CPRINTS("State transition differs from expectation");
return CTS_RC_FAILURE;
}
return CTS_RC_SUCCESS;
}
enum cts_rc test_task_wait_event(void)
{
uint32_t event;
wake_me_up = 1;
/* Sleep and wait for interrupt. This shouldn't time out. */
event = task_wait_event(CTS_INTERRUPT_TRIGGER_DELAY_US * 2);
if (event != TASK_EVENT_WAKE) {
CPRINTS("Woken up by unexpected event: 0x%08x", event);
return CTS_RC_FAILURE;
}
if (!got_interrupt) {
CPRINTS("Interrupt context not detected");
return CTS_RC_TIMEOUT;
}
return CTS_RC_SUCCESS;
}
static int i2c_write_raw_slave(int port, void *buf, int len)
{
stm32_dma_chan_t *chan;
int rv;
/* we don't want to race with TxE interrupt event */
disable_i2c_interrupt(port);
/* Configuring DMA1 channel DMAC_SLAVE_TX */
enable_ack(port);
chan = dma_get_channel(DMAC_SLAVE_TX);
dma_prepare_tx(dma_tx_option + port, len, buf);
/* Start the DMA */
dma_go(chan);
/* Configuring i2c to use DMA */
STM32_I2C_CR2(port) |= (1 << 11);
if (in_interrupt_context()) {
/* Poll for the transmission complete flag */
dma_wait(DMAC_SLAVE_TX);
dma_clear_isr(DMAC_SLAVE_TX);
} else {
/* Wait for the transmission complete Interrupt */
dma_enable_tc_interrupt(DMAC_SLAVE_TX);
rv = task_wait_event(DMA_TRANSFER_TIMEOUT_US);
dma_disable_tc_interrupt(DMAC_SLAVE_TX);
if (!(rv & TASK_EVENT_WAKE)) {
CPRINTS("Slave timeout, resetting i2c");
i2c_init_port(port);
}
}
dma_disable(DMAC_SLAVE_TX);
STM32_I2C_CR2(port) &= ~(1 << 11);
enable_i2c_interrupt(port);
return len;
}
void cts_task(void)
{
enum cts_rc rc;
int i;
task_wake(TASK_ID_TICK);
for (i = 0; i < CTS_TEST_ID_COUNT; i++) {
clear_state();
rc = tests[i].run();
CPRINTF("\n%s %d\n", tests[i].name, rc);
cflush();
}
CPRINTS("Task test suite finished");
cflush();
/* Sleep forever */
task_wait_event(-1);
}
void task_abc(void *data)
{
int task_id = task_get_current();
int id = task_id - TASK_ID_A;
task_id_t next = task_id + 1;
if (next > TASK_ID_C)
next = TASK_ID_A;
task_wait_event(-1);
CPRINTS("%c Starting", 'A' + id);
cflush();
while (1) {
wake_count[id]++;
if (id == 2 && wake_count[id] == repeat_count)
task_set_event(TASK_ID_CTS, TASK_EVENT_WAKE, 1);
else
task_set_event(next, TASK_EVENT_WAKE, 1);
}
}