4  * SPDX-License-Identifier: Apache-2.0
56 	struct esp32_ipm_data *dev_data = (struct esp32_ipm_data *)dev->data;  in esp32_ipm_isr()
57 	uint32_t core_id = dev_data->this_core_id;  in esp32_ipm_isr()
74 	/* first of all take the own of the shared memory */  in esp32_ipm_isr()
75 	while (!atomic_cas(&dev_data->control->lock, ESP32_IPM_LOCK_FREE_VAL,  in esp32_ipm_isr()
76 			   dev_data->this_core_id)) {  in esp32_ipm_isr()
80 	if (dev_data->cb) {  in esp32_ipm_isr()
82 		volatile void *shm = dev_data->shm.pro_cpu_shm;  in esp32_ipm_isr()
85 			shm = dev_data->shm.app_cpu_shm;  in esp32_ipm_isr()
88 		dev_data->cb(dev,  in esp32_ipm_isr()
89 				dev_data->user_data,  in esp32_ipm_isr()
90 				dev_data->control->dest_cpu_msg_id[core_id],  in esp32_ipm_isr()
94 	/* unlock the shared memory */  in esp32_ipm_isr()
95 	atomic_set(&dev_data->control->lock, ESP32_IPM_LOCK_FREE_VAL);  in esp32_ipm_isr()
99 			 const void *data, int size)  in esp32_ipm_send()  argument
101 	struct esp32_ipm_data *dev_data = (struct esp32_ipm_data *)dev->data;  in esp32_ipm_send()
103 	if (size > 0 && data == NULL) {  in esp32_ipm_send()
105 		return -EINVAL;  in esp32_ipm_send()
110 		return -EINVAL;  in esp32_ipm_send()
113 	if (dev_data->shm_size < size) {  in esp32_ipm_send()
114 		LOG_ERR("Not enough memory in IPM channel");  in esp32_ipm_send()
115 		return -ENOMEM;  in esp32_ipm_send()
120 	/* try to lock the shared memory */  in esp32_ipm_send()
121 	while (!atomic_cas(&dev_data->control->lock,  in esp32_ipm_send()
123 		dev_data->this_core_id)) {  in esp32_ipm_send()
127 		if ((wait != -1) && (wait > 0)) {  in esp32_ipm_send()
129 			wait--;  in esp32_ipm_send()
133 				return -ETIMEDOUT;  in esp32_ipm_send()
139 	dev_data->control->dest_cpu_msg_id[dev_data->other_core_id] = (uint16_t)(id & 0xFFFF);  in esp32_ipm_send()
142 	if (dev_data->this_core_id == 0) {  in esp32_ipm_send()
143 		memcpy(dev_data->shm.app_cpu_shm, data, size);  in esp32_ipm_send()
144 		atomic_set(&dev_data->control->lock, ESP32_IPM_LOCK_FREE_VAL);  in esp32_ipm_send()
153 		memcpy(dev_data->shm.pro_cpu_shm, data, size);  in esp32_ipm_send()
154 		atomic_set(&dev_data->control->lock, ESP32_IPM_LOCK_FREE_VAL);  in esp32_ipm_send()
172 	struct esp32_ipm_data *data = (struct esp32_ipm_data *)dev->data;  in esp32_ipm_register_callback()
176 	data->cb = cb;  in esp32_ipm_register_callback()
177 	data->user_data = user_data;  in esp32_ipm_register_callback()
184 	struct esp32_ipm_data *data = (struct esp32_ipm_data *)dev->data;  in esp32_ipm_max_data_size_get()
186 	return data->shm_size;  in esp32_ipm_max_data_size_get()
211 	struct esp32_ipm_data *data = (struct esp32_ipm_data *)dev->data;  in esp32_ipm_init()
212 	struct esp32_ipm_config *cfg = (struct esp32_ipm_config *)dev->config;  in esp32_ipm_init()
215 	data->this_core_id = esp_core_id();  in esp32_ipm_init()
216 	data->other_core_id = (data->this_core_id  == 0) ? 1 : 0;  in esp32_ipm_init()
218 	LOG_DBG("Size of IPM shared memory: %d", data->shm_size);  in esp32_ipm_init()
219 	LOG_DBG("Address of PRO_CPU IPM shared memory: %p", (void *)data->shm.pro_cpu_shm);  in esp32_ipm_init()
220 	LOG_DBG("Address of APP_CPU IPM shared memory: %p", (void *)data->shm.app_cpu_shm);  in esp32_ipm_init()
221 	LOG_DBG("Address of IPM control structure: %p", (void *)data->control);  in esp32_ipm_init()
223 	/* pro_cpu is responsible to initialize the lock of shared memory */  in esp32_ipm_init()
224 	if (data->this_core_id == 0) {  in esp32_ipm_init()
225 		ret = esp_intr_alloc(cfg->irq_source_pro_cpu,  in esp32_ipm_init()
226 				ESP_PRIO_TO_FLAGS(cfg->irq_priority_pro_cpu) |  in esp32_ipm_init()
227 				ESP_INT_FLAGS_CHECK(cfg->irq_flags_pro_cpu) |  in esp32_ipm_init()
238 		atomic_set(&data->control->lock, ESP32_IPM_LOCK_FREE_VAL);  in esp32_ipm_init()
243 		ret = esp_intr_alloc(cfg->irq_source_app_cpu,  in esp32_ipm_init()
244 				ESP_PRIO_TO_FLAGS(cfg->irq_priority_app_cpu) |  in esp32_ipm_init()
245 				ESP_INT_FLAGS_CHECK(cfg->irq_flags_app_cpu) |  in esp32_ipm_init()
257 		while (!atomic_cas(&data->control->lock,  in esp32_ipm_init()
258 			ESP32_IPM_LOCK_FREE_VAL, data->this_core_id)) {  in esp32_ipm_init()
262 		atomic_set(&data->control->lock, ESP32_IPM_LOCK_FREE_VAL);  in esp32_ipm_init()