1 /*
2 * Copyright (c) 2023 Intel Corporation.
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <errno.h>
8 #include <zephyr/sys/util.h>
9
10 #include <zephyr/debug/coredump.h>
11 #include "coredump_internal.h"
12
13 #include <zephyr/logging/log.h>
14 #include <zephyr/logging/log_ctrl.h>
15 #include <adsp_memory.h>
16 #include <adsp_debug_window.h>
17 LOG_MODULE_REGISTER(coredump_error, CONFIG_KERNEL_LOG_LEVEL);
18
19 static int error;
20 static uint32_t mem_wptr;
21
coredump_mem_window_backend_start(void)22 static void coredump_mem_window_backend_start(void)
23 {
24 /* Reset error & mem write ptr */
25 error = 0;
26 mem_wptr = 0;
27 ADSP_DW->descs[1].type = ADSP_DW_SLOT_TELEMETRY;
28
29 while (LOG_PROCESS()) {
30 ;
31 }
32
33 LOG_PANIC();
34 LOG_ERR(COREDUMP_PREFIX_STR COREDUMP_BEGIN_STR);
35 }
36
coredump_mem_window_backend_end(void)37 static void coredump_mem_window_backend_end(void)
38 {
39 if (error != 0) {
40 LOG_ERR(COREDUMP_PREFIX_STR COREDUMP_ERROR_STR);
41 }
42
43 LOG_ERR(COREDUMP_PREFIX_STR COREDUMP_END_STR);
44 }
45
coredump_mem_window_backend_buffer_output(uint8_t * buf,size_t buflen)46 static void coredump_mem_window_backend_buffer_output(uint8_t *buf, size_t buflen)
47 {
48 uint32_t *mem_window_separator = (uint32_t *)(ADSP_DW->slots[1]);
49 uint8_t *mem_window_sink = (uint8_t *)(ADSP_DW->slots[1]) + 4 + mem_wptr;
50 uint8_t *coredump_data = buf;
51 size_t data_left;
52 /* Default place for telemetry dump is in memory window. Each data is easily find using
53 * separator. For telemetry that separator is 0x0DEC0DEB.
54 */
55 *mem_window_separator = 0x0DEC0DEB;
56
57 /* skip the overflow data. Don't wrap around to keep the most important data
58 * such as registers and call stack in the beginning of mem window.
59 */
60 if (mem_wptr >= ADSP_DW_SLOT_SIZE - 4) {
61 return;
62 }
63
64 if (buf) {
65 for (data_left = buflen; data_left > 0; data_left--) {
66 *mem_window_sink = *coredump_data;
67 mem_window_sink++;
68 coredump_data++;
69 }
70
71 mem_wptr += buflen;
72 } else {
73 error = -EINVAL;
74 }
75 }
76
coredump_mem_window_backend_query(enum coredump_query_id query_id,void * arg)77 static int coredump_mem_window_backend_query(enum coredump_query_id query_id,
78 void *arg)
79 {
80 int ret;
81
82 switch (query_id) {
83 case COREDUMP_QUERY_GET_ERROR:
84 ret = error;
85 break;
86 default:
87 ret = -ENOTSUP;
88 break;
89 }
90
91 return ret;
92 }
93
coredump_mem_window_backend_cmd(enum coredump_cmd_id cmd_id,void * arg)94 static int coredump_mem_window_backend_cmd(enum coredump_cmd_id cmd_id,
95 void *arg)
96 {
97 int ret;
98
99 switch (cmd_id) {
100 case COREDUMP_CMD_CLEAR_ERROR:
101 ret = 0;
102 error = 0;
103 break;
104 default:
105 ret = -ENOTSUP;
106 break;
107 }
108
109 return ret;
110 }
111
112 struct coredump_backend_api coredump_backend_intel_adsp_mem_window = {
113 .start = coredump_mem_window_backend_start,
114 .end = coredump_mem_window_backend_end,
115 .buffer_output = coredump_mem_window_backend_buffer_output,
116 .query = coredump_mem_window_backend_query,
117 .cmd = coredump_mem_window_backend_cmd,
118 };
119
