1 /*
2 * Copyright (C) 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <interface/spi/spi.h>
18 #include <interface/spi/spi_loopback.h>
19 #include <interface/spi/spi_test.h>
20 #include <lib/spi/srv/srv.h>
21 #include <lib/tipc/tipc_srv.h>
22 #include <lk/err_ptr.h>
23
24 #include "driver/swspi.h"
25
26 #define TLOG_TAG "swspi-srv"
27 #include <trusty_log.h>
28
29 #define SPI_MAX_MSG_SIZE 1024
30
31 /*
32 * Software SPI buses/devices are connected the following way:
33 * First SPI bus is shared. It has a fake and a test device connected to it.
34 * Second SPI bus is dedicated. Only software loopback device is connected to
35 * it.
36 */
37 static struct spi_bus_ctx test_bus = {
38 .num_devs = 2, /* pretend this bus is shared */
39 };
40
41 static struct spi_dev_ctx test_dev = {
42 .bus = &test_bus,
43 };
44
45 #if WITH_SW_SPI_LOOPBACK
46 static struct spi_bus_ctx loopback_bus = {
47 .num_devs = 1,
48 };
49
50 static struct spi_dev_ctx loopback_dev = {
51 .bus = &loopback_bus,
52 .loopback = true,
53 };
54 #endif
55
56 static const struct tipc_port_acl port_acl = {
57 .flags = IPC_PORT_ALLOW_TA_CONNECT,
58 .uuids = NULL,
59 .uuid_num = 0, /* allow any app to connect */
60 .extra_data = NULL,
61 };
62
63 static const struct tipc_port ports[] = {
64 {
65 .name = SPI_TEST_PORT,
66 .msg_max_size = SPI_MAX_MSG_SIZE,
67 .msg_queue_len = 1,
68 .acl = &port_acl,
69 .priv = &test_dev,
70 },
71 #if WITH_SW_SPI_LOOPBACK
72 {
73 .name = SPI_LOOPBACK_PORT,
74 .msg_max_size = SPI_MAX_MSG_SIZE,
75 .msg_queue_len = 1,
76 .acl = &port_acl,
77 .priv = &loopback_dev,
78 },
79 #endif
80 };
81
main(void)82 int main(void) {
83 int rc;
84 struct tipc_hset* hset;
85
86 hset = tipc_hset_create();
87 if (IS_ERR(hset)) {
88 TLOGE("failed (%d) to create handle set\n", PTR_ERR(hset));
89 return PTR_ERR(hset);
90 }
91
92 rc = add_spi_service(hset, ports, countof(ports));
93 if (rc != NO_ERROR) {
94 TLOGE("failed (%d) to initialize SPI test service\n", rc);
95 return rc;
96 }
97
98 return tipc_run_event_loop(hset);
99 }
100