-
Notifications
You must be signed in to change notification settings - Fork 779
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[test] alert_handler_reverse_ping_in_deep_sleep
Check that escalation receivers located inside always-on blocks do not auto-escalate due to the reverse ping feature while the system is in deep sleep. Signed-off-by: Miguel Osorio <[email protected]>
- Loading branch information
Showing
4 changed files
with
334 additions
and
1 deletion.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
237 changes: 237 additions & 0 deletions
237
sw/device/tests/alert_handler_reverse_ping_in_deep_sleep_test.c
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,237 @@ | ||
| // Copyright lowRISC contributors. | ||
| // Licensed under the Apache License, Version 2.0, see LICENSE for details. | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
|
||
| #include <assert.h> | ||
| #include <limits.h> | ||
| #include <stdbool.h> | ||
| #include <stdint.h> | ||
|
|
||
| #include "sw/device/lib/base/math.h" | ||
| #include "sw/device/lib/base/mmio.h" | ||
| #include "sw/device/lib/dif/dif_alert_handler.h" | ||
| #include "sw/device/lib/dif/dif_aon_timer.h" | ||
| #include "sw/device/lib/dif/dif_pwrmgr.h" | ||
| #include "sw/device/lib/dif/dif_rstmgr.h" | ||
| #include "sw/device/lib/dif/dif_rv_plic.h" | ||
| #include "sw/device/lib/runtime/hart.h" | ||
| #include "sw/device/lib/runtime/irq.h" | ||
| #include "sw/device/lib/runtime/log.h" | ||
| #include "sw/device/lib/testing/alert_handler_testutils.h" | ||
| #include "sw/device/lib/testing/aon_timer_testutils.h" | ||
| #include "sw/device/lib/testing/pwrmgr_testutils.h" | ||
| #include "sw/device/lib/testing/rstmgr_testutils.h" | ||
| #include "sw/device/lib/testing/rv_plic_testutils.h" | ||
| #include "sw/device/lib/testing/test_framework/FreeRTOSConfig.h" | ||
| #include "sw/device/lib/testing/test_framework/check.h" | ||
| #include "sw/device/lib/testing/test_framework/ottf_main.h" | ||
|
|
||
| #include "alert_handler_regs.h" // Generated. | ||
| #include "hw/top_earlgrey/sw/autogen/top_earlgrey.h" | ||
| #include "sw/device/lib/testing/autogen/isr_testutils.h" | ||
|
|
||
| OTTF_DEFINE_TEST_CONFIG(); | ||
|
|
||
| enum { | ||
| // This time needs to be greater than 0.175s. See test plan for more details. | ||
| kTestParamWakeupThresholdUsec = 200000, | ||
|
|
||
| // This time is needed to cycle through all the alert pings. See test plan | ||
| // for more details. | ||
| kTestParamCycleThroughAllPingsUsec = kTestParamWakeupThresholdUsec >> 2, | ||
| kTestParamAlertHandlerIrqDeadlineUsec = 100, | ||
| kTestParamAlertHandlerPhase0EscalationDurationUsec = 100, | ||
| kTestParamAlertHandlerPingTimeoutUsec = 20, | ||
| }; | ||
|
|
||
| static_assert( | ||
| kTestParamWakeupThresholdUsec > 175000, | ||
| "Invalid kTestParamWakeupThresholdUsec. See test plan for more details."); | ||
|
|
||
| static dif_rv_plic_t plic; | ||
| static dif_pwrmgr_t pwrmgr; | ||
| static dif_rstmgr_t rstmgr; | ||
| static dif_aon_timer_t aon_timer; | ||
| static dif_alert_handler_t alert_handler; | ||
| static const uint32_t kPlicTarget = kTopEarlgreyPlicTargetIbex0; | ||
|
|
||
| static plic_isr_ctx_t plic_ctx = { | ||
| .rv_plic = &plic, | ||
| .hart_id = kPlicTarget, | ||
| }; | ||
|
|
||
| static volatile bool interrupt_serviced = false; | ||
|
|
||
| /** | ||
| * Initialize the peripherals used in this test. | ||
| */ | ||
| static void init_peripherals(void) { | ||
| CHECK_DIF_OK(dif_rv_plic_init( | ||
| mmio_region_from_addr(TOP_EARLGREY_RV_PLIC_BASE_ADDR), &plic)); | ||
| CHECK_DIF_OK(dif_alert_handler_init( | ||
| mmio_region_from_addr(TOP_EARLGREY_ALERT_HANDLER_BASE_ADDR), | ||
| &alert_handler)); | ||
| CHECK_DIF_OK(dif_pwrmgr_init( | ||
| mmio_region_from_addr(TOP_EARLGREY_PWRMGR_AON_BASE_ADDR), &pwrmgr)); | ||
| CHECK_DIF_OK(dif_rstmgr_init( | ||
| mmio_region_from_addr(TOP_EARLGREY_RSTMGR_AON_BASE_ADDR), &rstmgr)); | ||
| CHECK_DIF_OK(dif_aon_timer_init( | ||
| mmio_region_from_addr(TOP_EARLGREY_AON_TIMER_AON_BASE_ADDR), &aon_timer)); | ||
|
|
||
| // Enable all the alert_handler interrupts used in this test. | ||
| rv_plic_testutils_irq_range_enable(&plic, kPlicTarget, | ||
| kTopEarlgreyPlicIrqIdAlertHandlerClassa, | ||
| kTopEarlgreyPlicIrqIdAlertHandlerClassd); | ||
| } | ||
|
|
||
| /** | ||
| * Program the alert handler to escalate on alerts upto phase 1 (i.e. wipe | ||
| * secret) but not trigger reset. Then CPU can check if the correct interrupt | ||
| * fires and check the local alert cause register. | ||
| */ | ||
| static void alert_handler_config(void) { | ||
| dif_alert_handler_alert_t alerts[ALERT_HANDLER_PARAM_N_ALERTS]; | ||
| dif_alert_handler_class_t alert_classes[ALERT_HANDLER_PARAM_N_ALERTS]; | ||
|
|
||
| // Enable all incoming alerts and configure them to classa. | ||
| // This alert should never fire because we do not expect any incoming alerts. | ||
| for (int i = 0; i < ALERT_HANDLER_PARAM_N_ALERTS; ++i) { | ||
| alerts[i] = i; | ||
| alert_classes[i] = kDifAlertHandlerClassA; | ||
| } | ||
|
|
||
| // Enable alert ping fail local alert and configure that to classb. | ||
| dif_alert_handler_local_alert_t loc_alerts[ALERT_HANDLER_PARAM_N_LOC_ALERT]; | ||
| dif_alert_handler_class_t loc_alert_classes[ALERT_HANDLER_PARAM_N_LOC_ALERT]; | ||
| for (int i = 0; i < ALERT_HANDLER_PARAM_N_LOC_ALERT; ++i) { | ||
| loc_alerts[i] = i; | ||
| loc_alert_classes[i] = kDifAlertHandlerClassB; | ||
| } | ||
|
|
||
| dif_alert_handler_escalation_phase_t esc_phases[] = { | ||
| { | ||
| .phase = kDifAlertHandlerClassStatePhase0, | ||
| .signal = 0, | ||
| .duration_cycles = alert_handler_testutils_get_cycles_from_us( | ||
| kTestParamAlertHandlerPhase0EscalationDurationUsec), | ||
| }, | ||
| }; | ||
|
|
||
| dif_alert_handler_class_config_t class_config = { | ||
| .auto_lock_accumulation_counter = kDifToggleDisabled, | ||
| .accumulator_threshold = 0, | ||
| .irq_deadline_cycles = alert_handler_testutils_get_cycles_from_us( | ||
| kTestParamAlertHandlerIrqDeadlineUsec), | ||
| .escalation_phases = esc_phases, | ||
| .escalation_phases_len = ARRAYSIZE(esc_phases), | ||
| .crashdump_escalation_phase = kDifAlertHandlerClassStatePhase1, | ||
| }; | ||
|
|
||
| dif_alert_handler_class_config_t class_configs[] = {class_config, | ||
| class_config}; | ||
|
|
||
| dif_alert_handler_class_t classes[] = {kDifAlertHandlerClassA, | ||
| kDifAlertHandlerClassB}; | ||
| dif_alert_handler_config_t config = { | ||
| .alerts = alerts, | ||
| .alert_classes = alert_classes, | ||
| .alerts_len = ARRAYSIZE(alerts), | ||
| .local_alerts = loc_alerts, | ||
| .local_alert_classes = loc_alert_classes, | ||
| .local_alerts_len = ARRAYSIZE(loc_alerts), | ||
| .classes = classes, | ||
| .class_configs = class_configs, | ||
| .classes_len = ARRAYSIZE(class_configs), | ||
| .ping_timeout = alert_handler_testutils_get_cycles_from_us( | ||
| kTestParamAlertHandlerPingTimeoutUsec), | ||
| }; | ||
|
|
||
| alert_handler_testutils_configure_all(&alert_handler, config, | ||
| kDifToggleEnabled); | ||
| // Enables alert handler irq. | ||
| CHECK_DIF_OK(dif_alert_handler_irq_set_enabled( | ||
| &alert_handler, kDifAlertHandlerIrqClassa, kDifToggleEnabled)); | ||
|
|
||
| CHECK_DIF_OK(dif_alert_handler_irq_set_enabled( | ||
| &alert_handler, kDifAlertHandlerIrqClassb, kDifToggleEnabled)); | ||
| } | ||
|
|
||
| /** | ||
| * Ensure there were no local alerts fired. | ||
| */ | ||
| static void check_local_alerts(void) { | ||
| for (int i = 0; i < ALERT_HANDLER_PARAM_N_LOC_ALERT; ++i) { | ||
| bool is_cause; | ||
| CHECK_DIF_OK( | ||
| dif_alert_handler_local_alert_is_cause(&alert_handler, i, &is_cause)); | ||
| CHECK(!is_cause, "Unexpected local alert cause: %d", i); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * External ISR. | ||
| * | ||
| * Handles all peripheral interrupts on Ibex. PLIC asserts an external interrupt | ||
| * line to the CPU, which results in a call to this OTTF ISR. This ISR | ||
| * overrides the default OTTF implementation. | ||
| */ | ||
| void ottf_external_isr(void) { interrupt_serviced = true; } | ||
|
|
||
| bool test_main(void) { | ||
| init_peripherals(); | ||
|
|
||
| if (pwrmgr_testutils_is_wakeup_reason(&pwrmgr, 0)) { | ||
| LOG_INFO("POR reset"); | ||
| CHECK(rstmgr_testutils_reset_info_any(&rstmgr, kDifRstmgrResetInfoPor)); | ||
| rstmgr_testutils_pre_reset(&rstmgr); | ||
|
|
||
| alert_handler_config(); | ||
|
|
||
| irq_global_ctrl(true); | ||
| irq_external_ctrl(true); | ||
|
|
||
| uint32_t wakeup_threshold = aon_timer_testutils_get_aon_cycles_from_us( | ||
| kTestParamWakeupThresholdUsec); | ||
|
|
||
| // Sleep longer in FPGA and silicon targets. | ||
| if (kDeviceType != kDeviceSimDV && kDeviceType != kDeviceSimVerilator) { | ||
| uint32_t wakeup_threshold_new = wakeup_threshold * 100; | ||
| CHECK(wakeup_threshold_new > wakeup_threshold, | ||
| "Detected wakeup_threshold overflow."); | ||
| wakeup_threshold = wakeup_threshold_new; | ||
| } | ||
|
|
||
| // Wait for the alert handler to cycle through all pings and make sure | ||
| // there were no interrupts fired during that time. | ||
| busy_spin_micros(kTestParamCycleThroughAllPingsUsec); | ||
| check_local_alerts(); | ||
| CHECK(interrupt_serviced == false, "Unexpected interrupt triggered."); | ||
|
|
||
| // Enable and enter deep sleep. | ||
| aon_timer_testutils_wakeup_config(&aon_timer, wakeup_threshold); | ||
| pwrmgr_testutils_enable_low_power(&pwrmgr, | ||
| kDifPwrmgrWakeupRequestSourceFive, 0); | ||
| wait_for_interrupt(); | ||
| CHECK(false, "Fail to enter in low power mode!"); | ||
| OT_UNREACHABLE(); | ||
| } else if (pwrmgr_testutils_is_wakeup_reason( | ||
| &pwrmgr, kDifPwrmgrWakeupRequestSourceFive)) { | ||
| LOG_INFO("Wakeup reset"); | ||
| CHECK(rstmgr_testutils_is_reset_info(&rstmgr, | ||
| kDifRstmgrResetInfoLowPowerExit)); | ||
| aon_timer_testutils_shutdown(&aon_timer); | ||
|
|
||
| // At this point the test has verified that the reset reason is low power | ||
| // exit, which discounts any resets triggered by local alert escalations. | ||
| // We check local alerts and interrupt flag one more time to ensure the | ||
| // alert handler resumes with the expected state. | ||
| check_local_alerts(); | ||
| CHECK(interrupt_serviced == false, "Unexpected interrupt triggered."); | ||
| return true; | ||
| } | ||
| dif_pwrmgr_wakeup_reason_t wakeup_reason; | ||
| CHECK_DIF_OK(dif_pwrmgr_wakeup_reason_get(&pwrmgr, &wakeup_reason)); | ||
| LOG_ERROR("Unexpected wakeup detected: type = %d, request_source = %d", | ||
| wakeup_reason.types, wakeup_reason.request_sources); | ||
| return false; | ||
| } |