fix(wifi): IRAM for regdma path used in modem pd light sleep

components/esp_hw_support/linker.lf

@@ -88,6 +88,18 @@ entries:
         sleep_modes: esp_sleep_sub_mode_force_disable (noflash)
     if (SOC_GPIO_SUPPORT_HOLD_SINGLE_IO_IN_DSLP = n || SOC_GPIO_NEED_SOFT_ISOLATE_DURING_PD = y):
         esp_gpio_reserve (noflash)
+    if SOC_PM_MODEM_RETENTION_BY_REGDMA = y && ESP_PHY_MAC_BB_PD = y:
+        sleep_retention:sleep_retention_find_link_by_id (noflash)
+        regdma_link:regdma_find_link_by_id (noflash)
+        regdma_link:regdma_link_get_next (noflash)
+        regdma_link:regdma_link_get_next_continuous_wrapper (noflash)
+        regdma_link:regdma_link_get_next_addr_map_wrapper (noflash)
+        regdma_link:regdma_link_get_next_write_wait_wrapper (noflash)
+        regdma_link:regdma_link_get_next_branch_continuous_wrapper (noflash)
+        regdma_link:regdma_link_get_next_branch_addr_map_wrapper (noflash)
+        regdma_link:regdma_link_get_next_branch_write_wait_wrapper (noflash)
+        regdma_link:regdma_link_set_write_wait_content (noflash)
+        regdma_link:regdma_link_get_instance (noflash)
 
 [mapping:hal_gpio_pm]
 archive: libesp_hal_gpio.a

components/esp_hw_support/port/regdma_link.c

@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -318,43 +318,43 @@ void * regdma_link_init(const regdma_link_config_t *config, bool branch, int mod
     return link;
 }
 
-static void * regdma_link_get_next_continuous_wrapper(void *link)
+__attribute__((used, noinline)) static void * regdma_link_get_next_continuous_wrapper(void *link)
 {
     regdma_link_continuous_t *continuous = __containerof(link, regdma_link_continuous_t, head);
     return (void *)(continuous->body.next);
 }
 
-static void * regdma_link_get_next_addr_map_wrapper(void *link)
+__attribute__((used, noinline)) static void * regdma_link_get_next_addr_map_wrapper(void *link)
 {
     regdma_link_addr_map_t *addr_map = __containerof(link, regdma_link_addr_map_t, head);
     return (void *)(addr_map->body.next);
 }
 
-static void * regdma_link_get_next_write_wait_wrapper(void *link)
+__attribute__((used, noinline)) static void * regdma_link_get_next_write_wait_wrapper(void *link)
 {
     regdma_link_write_wait_t *write_wait = __containerof(link, regdma_link_write_wait_t, head);
     return (void *)(write_wait->body.next);
 }
 
-static regdma_entry_buf_t * regdma_link_get_next_branch_continuous_wrapper(void *link)
+__attribute__((used, noinline)) static regdma_entry_buf_t * regdma_link_get_next_branch_continuous_wrapper(void *link)
 {
     regdma_link_branch_continuous_t *branch_continuous = __containerof(link, regdma_link_branch_continuous_t, head);
     return &branch_continuous->body.next;
 }
 
-static regdma_entry_buf_t * regdma_link_get_next_branch_addr_map_wrapper(void *link)
+__attribute__((used, noinline)) static regdma_entry_buf_t * regdma_link_get_next_branch_addr_map_wrapper(void *link)
 {
     regdma_link_branch_addr_map_t *branch_addr_map = __containerof(link, regdma_link_branch_addr_map_t, head);
     return &branch_addr_map->body.next;
 }
 
-static regdma_entry_buf_t * regdma_link_get_next_branch_write_wait_wrapper(void *link)
+__attribute__((used, noinline)) static regdma_entry_buf_t * regdma_link_get_next_branch_write_wait_wrapper(void *link)
 {
     regdma_link_branch_write_wait_t *branch_write_wait = __containerof(link, regdma_link_branch_write_wait_t, head);
     return &branch_write_wait->body.next;
 }
 
-static void * regdma_link_get_next(void *link, int entry)
+__attribute__((used, noinline)) static void * regdma_link_get_next(void *link, int entry)
 {
     if (link) {
         regdma_link_head_t head = REGDMA_LINK_HEAD(link);
@@ -407,7 +407,7 @@ void * regdma_link_recursive(void *link, int entry, void (*hook)(void *, int, in
     return regdma_link_recursive_impl(link, entry, 0, hook);
 }
 
-static void * regdma_link_get_instance(void *link)
+__attribute__((used, noinline)) static void * regdma_link_get_instance(void *link)
 {
     void * container_memaddr[] = {
         (void *)__containerof(link, regdma_link_continuous_t, head),

components/esp_wifi/esp32c6/esp_adapter.c

@@ -568,12 +568,12 @@ static void esp_phy_disable_wrapper(void)
 }
 
 #if SOC_PM_MODEM_RETENTION_BY_REGDMA
-static void regdma_link_set_write_wait_content_wrapper(void *addr, uint32_t value, uint32_t mask)
+static void IRAM_ATTR regdma_link_set_write_wait_content_wrapper(void *addr, uint32_t value, uint32_t mask)
 {
     regdma_link_set_write_wait_content(addr, value, mask);
 }
 
-static void *sleep_retention_find_link_by_id_wrapper(int id)
+static void *IRAM_ATTR sleep_retention_find_link_by_id_wrapper(int id)
 {
     return sleep_retention_find_link_by_id(id);
 }