1 /*
2 * Copyright (c) 2020 Google LLC
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <errno.h>
8
9 #include <zephyr/init.h>
10 #include <zephyr/mgmt/ec_host_cmd/backend.h>
11 #include <zephyr/mgmt/ec_host_cmd/ec_host_cmd.h>
12 #include <string.h>
13
14 #ifndef CONFIG_ARCH_POSIX
15 #error Simulator only valid on posix
16 #endif
17
18 struct ec_host_cmd_sim_ctx {
19 struct ec_host_cmd_rx_ctx *rx_ctx;
20 struct ec_host_cmd_tx_buf *tx;
21 };
22
23 #define EC_HOST_CMD_SIM_DEFINE(_name) \
24 static struct ec_host_cmd_sim_ctx _name##_hc_sim; \
25 struct ec_host_cmd_backend _name = { \
26 .api = &ec_host_cmd_api, \
27 .ctx = (struct ec_host_cmd_sim_ctx *)&_name##_hc_sim, \
28 }
29
30 static ec_host_cmd_backend_api_send tx;
31
ec_host_cmd_sim_init(const struct ec_host_cmd_backend * backend,struct ec_host_cmd_rx_ctx * rx_ctx,struct ec_host_cmd_tx_buf * tx_buf)32 static int ec_host_cmd_sim_init(const struct ec_host_cmd_backend *backend,
33 struct ec_host_cmd_rx_ctx *rx_ctx,
34 struct ec_host_cmd_tx_buf *tx_buf)
35 {
36 struct ec_host_cmd_sim_ctx *hc_sim = (struct ec_host_cmd_sim_ctx *)backend->ctx;
37
38 hc_sim->rx_ctx = rx_ctx;
39 hc_sim->tx = tx_buf;
40
41 return 0;
42 }
43
ec_host_cmd_sim_send(const struct ec_host_cmd_backend * backend)44 static int ec_host_cmd_sim_send(const struct ec_host_cmd_backend *backend)
45 {
46 if (tx != NULL) {
47 return tx(backend);
48 }
49
50 return 0;
51 }
52
53 static const struct ec_host_cmd_backend_api ec_host_cmd_api = {
54 .init = &ec_host_cmd_sim_init,
55 .send = &ec_host_cmd_sim_send,
56 };
57 EC_HOST_CMD_SIM_DEFINE(ec_host_cmd_sim);
58
ec_host_cmd_backend_sim_install_send_cb(ec_host_cmd_backend_api_send cb,struct ec_host_cmd_tx_buf ** tx_buf)59 void ec_host_cmd_backend_sim_install_send_cb(ec_host_cmd_backend_api_send cb,
60 struct ec_host_cmd_tx_buf **tx_buf)
61 {
62 struct ec_host_cmd_sim_ctx *hc_sim = (struct ec_host_cmd_sim_ctx *)ec_host_cmd_sim.ctx;
63 *tx_buf = hc_sim->tx;
64 tx = cb;
65 }
66
ec_host_cmd_backend_sim_data_received(const uint8_t * buffer,size_t len)67 int ec_host_cmd_backend_sim_data_received(const uint8_t *buffer, size_t len)
68 {
69 struct ec_host_cmd_sim_ctx *hc_sim = (struct ec_host_cmd_sim_ctx *)ec_host_cmd_sim.ctx;
70
71 memcpy(hc_sim->rx_ctx->buf, buffer, len);
72 hc_sim->rx_ctx->len = len;
73
74 ec_host_cmd_rx_notify();
75
76 return 0;
77 }
78
host_cmd_init(void)79 static int host_cmd_init(void)
80 {
81
82 ec_host_cmd_init(&ec_host_cmd_sim);
83 return 0;
84 }
85 SYS_INIT(host_cmd_init, POST_KERNEL, CONFIG_EC_HOST_CMD_INIT_PRIORITY);
86
