1 /*
2  * Copyright (C) 2017 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 #define LOG_TAG "debug-hifi"
18 #include <errno.h>
19 #include <fcntl.h>
20 #include <unistd.h>
21 #include <poll.h>
22 #include <pthread.h>
23 #include <sys/ioctl.h>
24 #include <sys/prctl.h>
25 #include <stdio.h>
26 #include <cutils/log.h>
27 #include <cutils/uevent.h>
28 #include <stdlib.h>
29 #include <linux/audio_hifi.h>
30 
31 int main(int argc, char *argv[])
32 {
33     char *buffer;
34     int hifi_dsp_fd;
35     int ret = -1;
36     int i = 0;
37     unsigned int memsize = DRV_DSP_UART_TO_MEM_SIZE;
38     unsigned int clear = 0;
39     struct misc_io_dump_buf_param dump_buf;
40 
41     ALOGI("Enter hifi-dsp Audio Framework - sample application\n");
42     if (argc > 1)
43         memsize = strtoul(argv[1], NULL, 0);
44     if (argc > 2)
45         clear = 1;
46     hifi_dsp_fd = open(HIFI_DSP_MISC_DRIVER, O_RDWR, 0);
47     if (hifi_dsp_fd < 0) {
48         ALOGE("Error %d opening hifi dsp device", errno);
49         return ret;
50     }
51     buffer = malloc(memsize);
52     if (!buffer) {
53         ALOGE("Error allocating buffer");
54         goto out0;
55     }
56     dump_buf.user_buf = (uint64_t)buffer;
57     dump_buf.buf_size = memsize;
58     dump_buf.clear = clear;
59     ret = ioctl(hifi_dsp_fd, HIFI_MISC_IOCTL_DISPLAY_MSG, &dump_buf);
60     if (ret < 0) { /* This IOCTL returns buffer size */
61         ALOGE("Error %d accessing message buffer", errno);
62     } else {
63         printf("%s\n", ret > 0 ? buffer : "Buffer is empty");
64     }
65     free(buffer);
66 out0:
67     close(hifi_dsp_fd);
68     ALOGI("Exit hifi-dsp Audio Framework - sample application\n");
69     return ret;
70 }
71