wiseconnect: Use static allocation for threads

Zephyr CMSIS implementation has some limitations with dynamically allocated
resources[1].

This patch allocates the CMSIS resources statically. Thus:
  - this allows to workaround the limitation of the current CMSIS implementation
    until we fix them properly
  - it is possible to get rid of the dependencies to
    CMSIS_V2_THREAD_DYNAMIC_MAX_COUNT and CMSIS_V2_THREAD_MAX_COUNT.

[1]: zephyrproject-rtos/zephyr#85557

Upstream-status: Inappropriate [Zephyr specific workaround for stack allocation]
Signed-off-by: Arunmani Alagarsamy <[email protected]>
Signed-off-by: Jérôme Pouiller <[email protected]>

Author: ArunmaniAlagarsamy2710

wiseconnect/components/device/silabs/si91x/wireless/src/sl_rsi_utility.c

@@ -37,6 +37,7 @@
 #include "sl_wifi_types.h"
 #include "sl_rsi_utility.h"
 #include "cmsis_os2.h" // CMSIS RTOS2
+#include "cmsis_types.h"
 #include "sl_si91x_types.h"
 #include "sli_wifi_command_engine.h"
 #include "sl_si91x_core_utilities.h"
@@ -97,6 +98,10 @@ static bool sli_si91x_tx_command_status = false;
 #define SLI_FW_STATUS_STORAGE_INVALID_INDEX 0xFF // Invalid index for firmware status storage
 #define DEFAULT_BEACON_MISS_IGNORE_LIMIT    1
 
+static uint8_t __aligned(8) event_handler_stack[SL_SI91X_EVENT_HANDLER_STACK_SIZE];
+
+static struct cmsis_rtos_thread_cb event_thread_cb;
+
 /******************************************************
  *               Local Type Declarations
  ******************************************************/
@@ -1066,10 +1071,10 @@ sl_status_t sl_si91x_platform_init(void)
     const osThreadAttr_t attr = {
       .name       = "si91x_async_rx_event",
       .priority   = SL_WLAN_EVENT_THREAD_PRIORITY,
-      .stack_mem  = 0,
+      .stack_mem  = event_handler_stack,
       .stack_size = SL_SI91X_EVENT_HANDLER_STACK_SIZE,
-      .cb_mem     = 0,
-      .cb_size    = 0,
+      .cb_mem     = &event_thread_cb,
+      .cb_size    = sizeof(event_thread_cb),
       .attr_bits  = 0u,
       .tz_module  = 0u,
     };

wiseconnect/components/service/network_manager/src/sli_net_common_utility.c

@@ -41,17 +41,21 @@
 #endif
 #include "sli_wifi_constants.h"
 #include "sli_net_types.h"
+#include "cmsis_types.h"
 
 sl_net_event_handler_t net_event_handler = NULL;
 static osEventFlagsId_t auto_join_event_flag;
 static osThreadId_t network_manager_id          = NULL;
+
+static uint8_t __aligned(8) network_manager_stack[2304];
+static struct cmsis_rtos_thread_cb network_manager_thread_cb;
 const osThreadAttr_t network_manager_attributes = {
   .name       = "network_manager",
   .attr_bits  = 0,
-  .cb_mem     = 0,
-  .cb_size    = 0,
-  .stack_mem  = 0,
-  .stack_size = 2304,
+  .cb_mem     = &network_manager_thread_cb,
+  .cb_size    = sizeof(network_manager_thread_cb),
+  .stack_mem  = network_manager_stack,
+  .stack_size = sizeof(network_manager_stack),
   .priority   = osPriorityNormal,
   .tz_module  = 0,
   .reserved   = 0,

wiseconnect/components/sli_wifi_command_engine/src/sli_wifi_command_engine.c

@@ -33,6 +33,7 @@
 #include "sl_constants.h"
 #include "sli_wifi_event_handler.h"
 #include "cmsis_os2.h"
+#include "cmsis_types.h"
 
 /******************************************************
  *               Macro Definitions
@@ -55,6 +56,9 @@ void sli_wifi_command_engine(void *args);
  *               Function Definitions
 ******************************************************/
 
+static uint8_t __aligned(8) sli_wifi_command_engine_stack[1636];
+static struct cmsis_rtos_thread_cb sli_wifi_command_engine_thread_cb;
+
 void sli_wifi_command_engine_init(void)
 {
   // Call the init function of Command Engine Event Handler.
@@ -65,10 +69,10 @@ void sli_wifi_command_engine_init(void)
     const osThreadAttr_t attr = {
       .name       = "sli_wifi_command_engine",
       .priority   = SL_WLAN_COMMAND_ENGINE_THREAD_PRIORITY,
-      .stack_mem  = 0,
-      .stack_size = 1636,
-      .cb_mem     = 0,
-      .cb_size    = 0,
+      .stack_mem  = sli_wifi_command_engine_stack,
+      .stack_size = sizeof(sli_wifi_command_engine_stack),
+      .cb_mem     = &sli_wifi_command_engine_thread_cb,
+      .cb_size    = sizeof(sli_wifi_command_engine_thread_cb),
       .attr_bits  = 0u,
       .tz_module  = 0u,
     };