1 /*
2 * Copyright 2024 NXP
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 /**
8 * @file
9 * IEEE 802.15.4 HDLC RCP interface. This is meant for network connectivity
10 * between a host and a RCP radio device.
11 */
12
13 /* -------------------------------------------------------------------------- */
14 /* Includes */
15 /* -------------------------------------------------------------------------- */
16 #include <fwk_platform_hdlc.h>
17 #include <fwk_platform_ot.h>
18 #include <openthread/platform/radio.h>
19 #include <stdbool.h>
20 #include <stddef.h>
21 #include <zephyr/init.h>
22 #include <zephyr/logging/log.h>
23 #include <zephyr/net/hdlc_rcp_if/hdlc_rcp_if.h>
24 #include <zephyr/net/ieee802154_radio.h>
25 #include <zephyr/net/openthread.h>
26
27 /* -------------------------------------------------------------------------- */
28 /* Definitions */
29 /* -------------------------------------------------------------------------- */
30
31 #define DT_DRV_COMPAT nxp_hdlc_rcp_if
32
33 #define LOG_MODULE_NAME hdlc_rcp_if_nxp
34 #define LOG_LEVEL CONFIG_HDLC_RCP_IF_DRIVER_LOG_LEVEL
35 LOG_MODULE_REGISTER(LOG_MODULE_NAME);
36
37 struct ot_hdlc_rcp_context {
38 struct net_if *iface;
39 struct openthread_context *ot_context;
40 };
41
42 /* -------------------------------------------------------------------------- */
43 /* Private prototypes */
44 /* -------------------------------------------------------------------------- */
45
46 /* -------------------------------------------------------------------------- */
47 /* Private functions */
48 /* -------------------------------------------------------------------------- */
49
hdlc_iface_init(struct net_if * iface)50 static void hdlc_iface_init(struct net_if *iface)
51 {
52 struct ot_hdlc_rcp_context *ctx = net_if_get_device(iface)->data;
53 otExtAddress eui64;
54
55 ctx->iface = iface;
56
57 ieee802154_init(iface);
58
59 ctx->ot_context = net_if_l2_data(iface);
60
61 otPlatRadioGetIeeeEui64(ctx->ot_context->instance, eui64.m8);
62 net_if_set_link_addr(iface, eui64.m8, OT_EXT_ADDRESS_SIZE, NET_LINK_IEEE802154);
63 }
64
hdlc_register_rx_cb(hdlc_rx_callback_t hdlc_rx_callback,void * param)65 static int hdlc_register_rx_cb(hdlc_rx_callback_t hdlc_rx_callback, void *param)
66 {
67 int ret = 0;
68
69 ret = PLATFORM_InitHdlcInterface(hdlc_rx_callback, param);
70 if (ret < 0) {
71 LOG_ERR("HDLC RX callback registration failed");
72 }
73
74 return ret;
75 }
76
hdlc_send(const uint8_t * frame,uint16_t length)77 static int hdlc_send(const uint8_t *frame, uint16_t length)
78 {
79 int ret = 0;
80
81 ret = PLATFORM_SendHdlcMessage((uint8_t *)frame, length);
82 if (ret < 0) {
83 LOG_ERR("HDLC send frame failed");
84 }
85
86 return ret;
87 }
88
hdlc_deinit(void)89 static int hdlc_deinit(void)
90 {
91 int ret = 0;
92
93 ret = PLATFORM_TerminateHdlcInterface();
94 if (ret < 0) {
95 LOG_ERR("Failed to shutdown OpenThread controller");
96 }
97
98 return ret;
99 }
100
101 static const struct hdlc_api nxp_hdlc_api = {
102 .iface_api.init = hdlc_iface_init,
103 .register_rx_cb = hdlc_register_rx_cb,
104 .send = hdlc_send,
105 .deinit = hdlc_deinit,
106 };
107
108 #define L2_CTX_TYPE NET_L2_GET_CTX_TYPE(OPENTHREAD_L2)
109
110 #define MTU 1280
111
112 NET_DEVICE_DT_INST_DEFINE(0, NULL, /* Initialization Function */
113 NULL, /* No PM API support */
114 NULL, /* No context data */
115 NULL, /* Configuration info */
116 CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, /* Initial priority */
117 &nxp_hdlc_api, /* API interface functions */
118 OPENTHREAD_L2, /* Openthread L2 */
119 NET_L2_GET_CTX_TYPE(OPENTHREAD_L2), /* Openthread L2 context type */
120 MTU); /* MTU size */
121
