esp_light_sleep_start() will stall the other CPU via esp_ipc_isr_stall_other_cpu(). After stalling the other CPU,
will call esp_clk_... API which themselves take locks. If the other stalled CPU is holding those locks, this will
result in a deadlock.
This commit adds a workaround calling esp_clk_private_lock() to take the lock before stalling the other CPU.
- Remove esp_cpu_in_ocd_mode() from esp_cpu.h. Users should call esp_cpu_dbgr_is_attached() instead.
- Remove esp_cpu_get_ccount() from esp_cpu.h. Users should call esp_cpu_get_cycle_count() instead.
- Remove esp_cpu_set_ccount() from esp_cpu.h. Users should call esp_cpu_set_cycle_count() instead.
- Other IDF components updated to call esp_cpu_dbgr_is_attached(), esp_cpu_get_cycle_count() and esp_cpu_set_cycle_count() as well.
This commit marks all functions in soc_hal.h and soc_ll.h as deprecated.
Users should use functions from esp_cpu.h instead.
Also added missing wrap funcions for esp_cpu_stall() in test_panic.c files.
This commit marks all functions in interrupt_controller_hal.h, cpu_ll.h and cpu_hal.h as deprecated.
Users should use functions from esp_cpu.h instead.
This function removes the following legacy atomic CAS functions:
From compare_set.h (file removed):
- compare_and_set_native()
- compare_and_set_extram()
From portmacro.h
- uxPortCompareSet()
- uxPortCompareSetExtram()
Users should call esp_cpu_compare_and_set() instead as this function hides the details
of atomic CAS on internal and external RAM addresses.
Due to the removal of compare_set.h, some missing header includes are also fixed in this commit.
esp_cpu_compare_and_set() abstracts the atomic compare-and-set instruction by
hiding the details of whether the target variable is in internal or external
RAM. This commit updates "spinlocks.h" as follows:
- esp_cpu_compare_and_set() is now called instead of "compare_set.h"
- Refactored spinlock logic to be more optimized and have more stringent sanity checks
This commit fixes esp_cpu_compare_and_set() in the following ways
- Removed call to esp_ptr_external_ram() as it incurred > 80 CPU cycles (due to multiple nested
function calls, and those functions not being in IRAM). We now check manually if the pointer
is in external RAM for increased speed.
- Fixed infinite wait when attempting to get the external_ram_cas_lock. The function should
return immediatley if any part of the compare and set call fails.
- The preprocessor conditions of esp_cpu_compare_and_set() to depend on CONFIG_SPIRAM instead
of SOC_SPIRAM_SUPPORTED. Even if the target supports SPIRAM, we only need the external RAM
compare and set feature if SPIRAM is enabled.
Also fixed incorrect inclusion of esp_intr_alloc.h in esp_cpu.h
Some of the Memory Protection (internal) API functions dealing with per-CPU operations were missing appropriate handling of the CPU count actually configured by CONFIG_FREERTOS_UNICORE. The flaw was fixed across all the places found in the code as the issue was of general type
