ipc: icmsg: fix unbound for POSIX

Make sure unbound works on nrf5340bsim.

Signed-off-by: Dmitrii Sharshakov <[email protected]>

Author: dsseng

include/zephyr/ipc/pbuf.h

@@ -269,6 +269,18 @@ void pbuf_handshake_write(struct pbuf *pb, uint32_t value);
  */
 int pbuf_get_initial_buf(struct pbuf *pb, volatile char **buf, uint16_t *len);
 
+/**
+ * @brief Remap embedded addresses to native addresses.
+ *
+ * This function is to be used only with native simulator based targets and
+ * remaps addresses of a pbuf from devicetree addesses to
+ * allocated native memory address ranges.
+ * This is only used in the IPC backend implementations.
+ *
+ * @param pb A buffer to be remapped.
+ */
+void pbuf_native_addr_remap(struct pbuf *pb);
+
 /**
  * @}
  */

subsys/ipc/ipc_service/lib/icmsg.c

@@ -412,6 +412,10 @@ int icmsg_open(const struct icmsg_config_t *conf,
 	k_mutex_init(&dev_data->tx_lock);
 #endif
 
+#if defined(CONFIG_ARCH_POSIX)
+	pbuf_native_addr_remap(dev_data->tx_pb);
+#endif
+
 	ret = pbuf_rx_init(dev_data->rx_pb);
 
 	if (ret < 0) {

subsys/ipc/ipc_service/lib/pbuf.c

@@ -65,6 +65,7 @@ static int validate_cfg(const struct pbuf_cfg *cfg)
 void pbuf_native_addr_remap(struct pbuf *pb)
 {
 	native_emb_addr_remap((void **)&pb->cfg->rd_idx_loc);
+	native_emb_addr_remap((void **)&pb->cfg->handshake_loc);
 	native_emb_addr_remap((void **)&pb->cfg->wr_idx_loc);
 	native_emb_addr_remap((void **)&pb->cfg->data_loc);
 }