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_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;
}
void tcpci_tcpc_alert(int port)
{
int status;
/* Read the Alert register from the TCPC */
tcpm_alert_status(port, &status);
/*
* Clear alert status for everything except RX_STATUS, which shouldn't
* be cleared until we have successfully retrieved message.
*/
if (status & ~TCPC_REG_ALERT_RX_STATUS)
tcpc_write16(port, TCPC_REG_ALERT,
status & ~TCPC_REG_ALERT_RX_STATUS);
if (status & TCPC_REG_ALERT_CC_STATUS) {
/* CC status changed, wake task */
task_set_event(PD_PORT_TO_TASK_ID(port), PD_EVENT_CC, 0);
}
if (status & TCPC_REG_ALERT_POWER_STATUS) {
int reg = 0;
tcpc_read(port, TCPC_REG_POWER_STATUS_MASK, ®);
if (reg == TCPC_REG_POWER_STATUS_MASK_ALL) {
/*
* If power status mask has been reset, then the TCPC
* has reset.
*/
task_set_event(PD_PORT_TO_TASK_ID(port),
PD_EVENT_TCPC_RESET, 0);
} else {
/* Read Power Status register */
tcpci_tcpm_get_power_status(port, ®);
/* Update VBUS status */
tcpc_vbus[port] = reg &
TCPC_REG_POWER_STATUS_VBUS_PRES ? 1 : 0;
#if defined(CONFIG_USB_PD_VBUS_DETECT_TCPC) && defined(CONFIG_USB_CHARGER)
/* Update charge manager with new VBUS state */
usb_charger_vbus_change(port, tcpc_vbus[port]);
task_wake(PD_PORT_TO_TASK_ID(port));
#endif /* CONFIG_USB_PD_VBUS_DETECT_TCPC && CONFIG_USB_CHARGER */
}
}
if (status & TCPC_REG_ALERT_RX_STATUS) {
/* message received */
task_set_event(PD_PORT_TO_TASK_ID(port), PD_EVENT_RX, 0);
}
if (status & TCPC_REG_ALERT_RX_HARD_RST) {
/* hard reset received */
pd_execute_hard_reset(port);
task_wake(PD_PORT_TO_TASK_ID(port));
}
if (status & TCPC_REG_ALERT_TX_COMPLETE) {
/* transmit complete */
pd_transmit_complete(port, status & TCPC_REG_ALERT_TX_SUCCESS ?
TCPC_TX_COMPLETE_SUCCESS :
TCPC_TX_COMPLETE_FAILED);
}
}
/**
* Handle debounced power button changing state.
*/
static void powerbtn_x86_changed(void)
{
if (pwrbtn_state == PWRBTN_STATE_BOOT_KB_RESET ||
pwrbtn_state == PWRBTN_STATE_INIT_ON ||
pwrbtn_state == PWRBTN_STATE_LID_OPEN ||
pwrbtn_state == PWRBTN_STATE_WAS_OFF) {
/* Ignore all power button changes during an initial pulse */
CPRINTS("PB ignoring change");
return;
}
if (power_button_is_pressed()) {
/* Power button pressed */
power_button_pressed(get_time().val);
} else {
/* Power button released */
if (pwrbtn_state == PWRBTN_STATE_EAT_RELEASE) {
/*
* Ignore the first power button release if we already
* told the PCH the power button was released.
*/
CPRINTS("PB ignoring release");
pwrbtn_state = PWRBTN_STATE_IDLE;
return;
}
power_button_released(get_time().val);
}
/* Wake the power button task */
task_wake(TASK_ID_POWERBTN);
}
static int command_power(int argc, char **argv)
{
int v;
if (argc < 2) {
enum power_state_t state;
state = PSTATE_UNKNOWN;
if (chipset_in_state(CHIPSET_STATE_ANY_OFF))
state = PSTATE_OFF;
if (chipset_in_state(CHIPSET_STATE_SUSPEND))
state = PSTATE_SUSPEND;
if (chipset_in_state(CHIPSET_STATE_ON))
state = PSTATE_ON;
ccprintf("%s\n", state_name[state]);
return EC_SUCCESS;
}
if (!parse_bool(argv[1], &v))
return EC_ERROR_PARAM1;
power_request = v ? POWER_REQ_ON : POWER_REQ_OFF;
ccprintf("Requesting power %s\n", power_req_name[power_request]);
task_wake(TASK_ID_CHIPSET);
return EC_SUCCESS;
}
void vbus_wake_interrupt(enum gpio_signal signal)
{
CPRINTF("VBUS %d\n", !gpio_get_level(signal));
gpio_set_level(GPIO_USB_PD_VBUS_WAKE,
!gpio_get_level(GPIO_VBUS_WAKE_L));
/*
* TODO(crosbug.com/p/41226):
* rev1/rev2 boards don't have vbus input on ec. vbus_wake is a
* logical OR of two vbus status. to workaround the power status
* issue, wake up both pd tasks on vbus_wake interrupt. a proper
* hardware fix will be in rev3.
* enable TCPC POWER_STATUS ALERT1 can solve this issue too.
*/
task_wake(TASK_ID_PD_C0);
task_wake(TASK_ID_PD_C1);
}
void kb_ibf_interrupt(void)
{
if (lpc_keyboard_input_pending())
keyboard_host_write(MEC1322_8042_H2E,
MEC1322_8042_STS & (1 << 3));
task_wake(TASK_ID_KEYPROTO);
}
static void siglog_deferred(void)
{
const struct gpio_info *g = gpio_list;
unsigned int i;
timestamp_t tdiff = {.val = 0};
/* Disable interrupts for input signals while we print stuff.*/
for (i = 0; i < POWER_SIGNAL_COUNT; i++)
gpio_disable_interrupt(power_signal_list[i].gpio);
CPRINTF("%d signal changes:\n", siglog_entries);
for (i = 0; i < siglog_entries; i++) {
if (i)
tdiff.val = siglog[i].time.val - siglog[i-1].time.val;
CPRINTF(" %.6ld +%.6ld %s => %d\n",
siglog[i].time.val, tdiff.val,
g[siglog[i].signal].name,
siglog[i].level);
}
if (siglog_truncated)
CPRINTF(" SIGNAL LOG TRUNCATED...\n");
siglog_entries = siglog_truncated = 0;
/* Okay, turn 'em on again. */
for (i = 0; i < POWER_SIGNAL_COUNT; i++)
gpio_enable_interrupt(power_signal_list[i].gpio);
}
DECLARE_DEFERRED(siglog_deferred);
static void siglog_add(enum gpio_signal signal)
{
if (siglog_entries >= MAX_SIGLOG_ENTRIES) {
siglog_truncated = 1;
return;
}
siglog[siglog_entries].time = get_time();
siglog[siglog_entries].signal = signal;
siglog[siglog_entries].level = gpio_get_level(signal);
siglog_entries++;
hook_call_deferred(siglog_deferred, SECOND);
}
#define SIGLOG(S) siglog_add(S)
#else
#define SIGLOG(S)
#endif /* CONFIG_BRINGUP */
void power_signal_interrupt(enum gpio_signal signal)
{
SIGLOG(signal);
/* Shadow signals and compare with our desired signal state. */
power_update_signals();
/* Wake up the task */
task_wake(TASK_ID_CHIPSET);
}
static int command_display_accel_info(int argc, char **argv)
{
char *e;
int val;
if (argc > 3)
return EC_ERROR_PARAM_COUNT;
/* First argument is on/off whether to display accel data. */
if (argc > 1) {
if (!parse_bool(argv[1], &val))
return EC_ERROR_PARAM1;
accel_disp = val;
}
/*
* Second arg changes the accel task time interval. Note accel
* sampling interval will be clobbered when chipset suspends or
* resumes.
*/
if (argc > 2) {
val = strtoi(argv[2], &e, 0);
if (*e)
return EC_ERROR_PARAM2;
accel_interval = val * MSEC;
task_wake(TASK_ID_MOTIONSENSE);
}
return EC_SUCCESS;
}
static int verify_variable_not_set(int *var)
{
*var = 0;
task_wake(TASK_ID_KEYSCAN);
msleep(NO_KEYDOWN_DELAY_MS);
return *var ? EC_ERROR_UNKNOWN : EC_SUCCESS;
}
static int expect_no_keychange(void)
{
int old_count = fifo_add_count;
task_wake(TASK_ID_KEYSCAN);
msleep(NO_KEYDOWN_DELAY_MS);
return (fifo_add_count == old_count) ? EC_SUCCESS : EC_ERROR_UNKNOWN;
}
void tcpc_alert(int port)
{
int status;
/* Read the Alert register from the TCPC */
tcpm_alert_status(port, &status);
/*
* Clear alert status for everything except RX_STATUS, which shouldn't
* be cleared until we have successfully retrieved message.
*/
if (status & ~TCPC_REG_ALERT_RX_STATUS)
i2c_write16(I2C_PORT_TCPC, I2C_ADDR_TCPC(port),
TCPC_REG_ALERT, status & ~TCPC_REG_ALERT_RX_STATUS);
if (status & TCPC_REG_ALERT_CC_STATUS) {
/* CC status changed, wake task */
task_set_event(PD_PORT_TO_TASK_ID(port), PD_EVENT_CC, 0);
}
if (status & TCPC_REG_ALERT_RX_STATUS) {
/* message received */
task_set_event(PD_PORT_TO_TASK_ID(port), PD_EVENT_RX, 0);
}
if (status & TCPC_REG_ALERT_RX_HARD_RST) {
/* hard reset received */
pd_execute_hard_reset(port);
task_wake(PD_PORT_TO_TASK_ID(port));
}
if (status & TCPC_REG_ALERT_TX_COMPLETE) {
/* transmit complete */
pd_transmit_complete(port, status & TCPC_REG_ALERT_TX_SUCCESS ?
TCPC_TX_COMPLETE_SUCCESS :
TCPC_TX_COMPLETE_FAILED);
}
}
static void wake_pmu_task_if_necessary(void)
{
if (has_pending_event) {
has_pending_event = 0;
task_wake(TASK_ID_CHARGER);
}
}
/*---------------------------------------------------------------------------*/
void kbd_isr (u8 key_press)
{
/* If the Keypress is valid, give the Semaphore */
if (kbd_char_get (key_press, &key) == GOOD)
task_wake (task_id) ;
} /* End of function kbd_isr() */
static void unplug(int port)
{
pd_port[port].has_vbus = 0;
pd_port[port].partner_role = -1;
task_wake(PD_PORT_TO_TASK_ID(port));
usleep(30 * MSEC);
}
/*
* motion_sense_set_accel_interval
*
* Set the wake up interval for the motion sense thread.
* It is set to the highest frequency one of the sensors need to be polled at.
*
* Note: Not static to be tested.
*/
int motion_sense_set_accel_interval(void)
{
int i, sensor_ec_rate, ec_rate, wake_up = 0;
struct motion_sensor_t *sensor;
for (i = 0, ec_rate = 0; i < motion_sensor_count; ++i) {
sensor = &motion_sensors[i];
/*
* If the sensor is sleeping, no need to check it periodicaly.
*/
if ((sensor->state != SENSOR_INITIALIZED) ||
(sensor->drv->get_data_rate(sensor) == 0))
continue;
sensor_ec_rate = motion_sense_ec_rate(sensor);
if ((ec_rate == 0 && sensor_ec_rate != 0) ||
(sensor_ec_rate != 0 && sensor_ec_rate < ec_rate))
ec_rate = sensor_ec_rate;
}
/*
* Wake up the motion sense task: we want to sensor task to take
* in account the new period right away.
*/
if (accel_interval == 0 ||
(ec_rate > 0 && accel_interval > ec_rate))
wake_up = 1;
accel_interval = ec_rate;
if (wake_up)
task_wake(TASK_ID_MOTIONSENSE);
return accel_interval;
}
void chipset_exit_hard_off(void)
{
/*
* If not in the soft-off state, hard-off state, or headed there,
* nothing to do.
*/
if (state != POWER_G3 && state != POWER_S5G3 && state != POWER_S5)
return;
/*
* Set a flag to leave G3, then wake the task. If the power state is
* POWER_S5G3, or is POWER_S5 but the S5 inactivity timer has
* expired, set this flag can let system go to G3 and then exit G3
* immediately for powering on.
*/
want_g3_exit = 1;
/*
* If the power state is in POWER_S5 and S5 inactivity timer is
* running, to wake the chipset task can cancel S5 inactivity timer and
* then restart the timer. This will give cpu a chance to start up if
* S5 inactivity timer is about to expire while power button is
* pressed. For other states here, to wake the chipset task to trigger
* the event for leaving G3 is necessary.
*/
if (task_start_called())
task_wake(TASK_ID_CHIPSET);
}
void keyboard_raw_interrupt(void)
{
/* Clear interrupt status bits */
MEC1322_KS_KSI_STATUS = 0xff;
/* Wake keyboard scan task to handle interrupt */
task_wake(TASK_ID_KEYSCAN);
}
/* KB controller input buffer full ISR */
void lpc_kbc_ibf_interrupt(void)
{
/* If "command" input 0, else 1*/
if (lpc_keyboard_input_pending())
keyboard_host_write(NPCX_HIKMDI, (NPCX_HIKMST & 0x08) ? 1 : 0);
CPRINTS("ibf isr %02x", NPCX_HIKMDI);
task_wake(TASK_ID_KEYPROTO);
}
static int wait_charging_state(void)
{
enum charge_state state;
task_wake(TASK_ID_CHARGER);
msleep(WAIT_CHARGER_TASK);
state = charge_get_state();
ccprintf("[CHARGING TEST] state = %d\n", state);
return state;
}
static void rockchip_lid_event(void)
{
/* Power task only cares about lid-open events */
if (!lid_is_open())
return;
lid_opened = 1;
task_wake(TASK_ID_CHIPSET);
}
/**
* Handle charge state changes
*/
static void powerbtn_x86_charge(void)
{
/*
* If we were waiting for the charge state machine to init before we
* powered on the chipset, we can stop waiting.
*/
if (pwrbtn_state == PWRBTN_STATE_INIT_ON)
task_wake(TASK_ID_POWERBTN);
}
/* KB controller output buffer empty ISR */
void lpc_kbc_obe_interrupt(void)
{
/* Disable KBC OBE interrupt */
CLEAR_BIT(NPCX_HICTRL, NPCX_HICTRL_OBECIE);
task_disable_irq(NPCX_IRQ_KBC_OBE);
CPRINTS("obe isr %02x", NPCX_HIKMST);
task_wake(TASK_ID_KEYPROTO);
}
void power_button_pch_pulse(void)
{
CPRINTS("PB PCH pulse");
chipset_exit_hard_off();
set_pwrbtn_to_pch(0);
pwrbtn_state = PWRBTN_STATE_LID_OPEN;
tnext_state = get_time().val + PWRBTN_INITIAL_US;
task_wake(TASK_ID_POWERBTN);
}
void pmu_task_throttled_wake(void)
{
timestamp_t now = get_time();
if (now.val - last_waken.val >= HOOK_TICK_INTERVAL) {
has_pending_event = 0;
task_wake(TASK_ID_CHARGER);
} else {
has_pending_event = 1;
}
}
void chipset_exit_hard_off(void)
{
/* If not in the hard-off state nor headed there, nothing to do */
if (state != POWER_G3 && state != POWER_S5G3)
return;
/* Set a flag to leave G3, then wake the task */
want_g3_exit = 1;
task_wake(TASK_ID_CHIPSET);
}
static int expect_keychange(void)
{
int old_count = fifo_add_count;
int retry = KEYDOWN_RETRY;
task_wake(TASK_ID_KEYSCAN);
while (retry--) {
msleep(KEYDOWN_DELAY_MS);
if (fifo_add_count > old_count)
return EC_SUCCESS;
}
return EC_ERROR_UNKNOWN;
}
static int wait_variable_set(int *var)
{
int retry = KEYDOWN_RETRY;
*var = 0;
task_wake(TASK_ID_KEYSCAN);
while (retry--) {
msleep(KEYDOWN_DELAY_MS);
if (*var == 1)
return EC_SUCCESS;
}
return EC_ERROR_UNKNOWN;
}
/*
* Header: Run the task in three parts: wake - decode - execute
*
* Params: tsk - task to run
* Return: ETRSLP - task is still sleeping and yielded before run
* ETRPAU - task was paused and yielded before run
* ETRINS - invalid instruction, now in error state
* ETRPWM - invalid target, now in error state
* ETRNLP - encountered nested loop, now in error state
*
* Description:
*
* This function is decomposed into three (static) functions. First, we try to
* wake the task from sleep (if necessary). If we cannot wake from sleep yet,
* then we return immediately - we do not consider the task to have run at
* all in that cycle.
*
* Before we run instruction decode, we transfer last cycle's target to this
* cycle's current position. That is, if the last instruction was a MOV, we
* are now at that position.
*
* Next is instruction decode. If any error occurs here, we throw the task
* into error state.
*
* Finally, the instruction itself is executed. In the case of an invalid
* target or encounter of a nested loop, we throw the task into error state.
*
* Overall, note this function deals primarly with two control variables:
*
* - result: contains success or an error code
*
* - increment_pc: some branches in this function require that $pc not be
* incremented. For example, when we return after not waking from sleep,
* we are still on the same instruction.
*/
char task_run(struct task *tsk)
{
char result = 0; /* Initially assume function will succeed */
char increment_pc = 1; /* Initially assume $pc will be incremented */
char wake_result, decode_result, exe_result; /* intermediates */
unsigned char opcode, params;
/* This determines if the task should RUN or YIELD IMMEDIATELY */
switch(wake_result = task_wake(tsk)) {
case ETRSLP:
case ETRPAU:
case ETREND:
case ETRCRT:
increment_pc = 0; /* Do NOT increment PC! */
result = wake_result;
goto yield;
}
tsk->state = ST_RUNNING;
tsk->cur_pos = tsk->mov_pos; /* We're now at last cycle's target */
/* If decode fails, the func will return ETRINS */
switch(decode_result = task_instr_decode(tsk, &opcode, ¶ms)) {
case ETRINS:
increment_pc = 0; /* Do NOT increment PC! */
result = decode_result;
goto yield;
}
switch(exe_result = task_instr_exe(tsk, opcode, params)) {
case ETRPWM:
case ETRNLP:
case ETREND:
increment_pc = 0; /* Do NOT increment PC! */
result = exe_result;
goto yield;
}
tsk->state = ST_SLEEPING;
yield: if(increment_pc) tsk->pc++; /* (else: i.e. fail to wake from sleep) */
if(tsk->state == ST_END && tsk->preempted) {
task_fake_stack_pop(tsk);
}
return result;
}