1 /*
2 * Copyright (c) 2022 Nordic Semiconductor ASA
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include "ipc_icmsg_v1.h"
8
9 #include <zephyr/kernel.h>
10 #include <zephyr/device.h>
11 #include "icmsg_v1.h"
12
13 #include <zephyr/ipc/ipc_service_backend.h>
14
15 #define DT_DRV_COMPAT zephyr_ipc_icmsg
16
register_ept(const struct device * instance,void ** token,const struct ipc_ept_cfg * cfg)17 static int register_ept(const struct device *instance, void **token,
18 const struct ipc_ept_cfg *cfg)
19 {
20 const struct icmsg_config_t *conf = instance->config;
21 struct icmsg_data_t *dev_data = instance->data;
22
23 /* Only one endpoint is supported. No need for a token. */
24 *token = NULL;
25
26 return icmsg_open(conf, dev_data, &cfg->cb, cfg->priv);
27 }
28
deregister_ept(const struct device * instance,void * token)29 static int deregister_ept(const struct device *instance, void *token)
30 {
31 const struct icmsg_config_t *conf = instance->config;
32 struct icmsg_data_t *dev_data = instance->data;
33
34 return icmsg_close(conf, dev_data);
35 }
36
send(const struct device * instance,void * token,const void * msg,size_t len)37 static int send(const struct device *instance, void *token,
38 const void *msg, size_t len)
39 {
40 const struct icmsg_config_t *conf = instance->config;
41 struct icmsg_data_t *dev_data = instance->data;
42
43 return icmsg_send(conf, dev_data, msg, len);
44 }
45
46 const static struct ipc_service_backend backend_ops = {
47 .register_endpoint = register_ept,
48 .deregister_endpoint = deregister_ept,
49 .send = send,
50 };
51
backend_init(const struct device * instance)52 static int backend_init(const struct device *instance)
53 {
54 return 0;
55 }
56
57 #define DEFINE_BACKEND_DEVICE(i) \
58 static const struct icmsg_config_t backend_config_##i = { \
59 .mbox_tx = MBOX_DT_SPEC_INST_GET(i, tx), \
60 .mbox_rx = MBOX_DT_SPEC_INST_GET(i, rx), \
61 }; \
62 \
63 PBUF_DEFINE(tx_pb_##i, \
64 DT_REG_ADDR(DT_INST_PHANDLE(i, tx_region)), \
65 DT_REG_SIZE(DT_INST_PHANDLE(i, tx_region)), \
66 DT_INST_PROP_OR(i, dcache_alignment, 0)); \
67 PBUF_DEFINE(rx_pb_##i, \
68 DT_REG_ADDR(DT_INST_PHANDLE(i, rx_region)), \
69 DT_REG_SIZE(DT_INST_PHANDLE(i, rx_region)), \
70 DT_INST_PROP_OR(i, dcache_alignment, 0)); \
71 \
72 static struct icmsg_data_t backend_data_##i = { \
73 .tx_pb = &tx_pb_##i, \
74 .rx_pb = &rx_pb_##i, \
75 }; \
76 \
77 DEVICE_DT_INST_DEFINE(i, \
78 &backend_init, \
79 NULL, \
80 &backend_data_##i, \
81 &backend_config_##i, \
82 POST_KERNEL, \
83 CONFIG_IPC_SERVICE_REG_BACKEND_PRIORITY, \
84 &backend_ops);
85
86 DT_INST_FOREACH_STATUS_OKAY(DEFINE_BACKEND_DEVICE)
87
