Merge git://git.denx.de/u-boot-imx
[platform/kernel/u-boot.git] / cmd / iotrace.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (c) 2014 Google, Inc
4  */
5
6 #include <common.h>
7 #include <command.h>
8 #include <iotrace.h>
9
10 static void do_print_stats(void)
11 {
12         ulong start, size, needed_size, offset, count;
13
14         printf("iotrace is %sabled\n", iotrace_get_enabled() ? "en" : "dis");
15         iotrace_get_buffer(&start, &size, &needed_size, &offset, &count);
16         printf("Start:  %08lx\n", start);
17         printf("Actual Size:   %08lx\n", size);
18         printf("Needed Size:   %08lx\n", needed_size);
19         iotrace_get_region(&start, &size);
20         printf("Region: %08lx\n", start);
21         printf("Size:   %08lx\n", size);
22         printf("Offset: %08lx\n", offset);
23         printf("Output: %08lx\n", start + offset);
24         printf("Count:  %08lx\n", count);
25         printf("CRC32:  %08lx\n", (ulong)iotrace_get_checksum());
26 }
27
28 static void do_print_trace(void)
29 {
30         ulong start, size, needed_size, offset, count;
31
32         struct iotrace_record *cur_record;
33
34         iotrace_get_buffer(&start, &size, &needed_size, &offset, &count);
35
36         if (!start || !size || !count)
37                 return;
38
39         printf("Timestamp  Value          Address\n");
40
41         cur_record = (struct iotrace_record *)start;
42         for (int i = 0; i < count; i++) {
43                 if (cur_record->flags & IOT_WRITE)
44                         printf("%08llu: 0x%08lx --> 0x%08llx\n",
45                                cur_record->timestamp,
46                                         cur_record->value,
47                                         (unsigned long long)cur_record->addr);
48                 else
49                         printf("%08llu: 0x%08lx <-- 0x%08llx\n",
50                                cur_record->timestamp,
51                                         cur_record->value,
52                                         (unsigned long long)cur_record->addr);
53
54                 cur_record++;
55         }
56 }
57
58 static int do_set_buffer(int argc, char * const argv[])
59 {
60         ulong addr = 0, size = 0;
61
62         if (argc == 2) {
63                 addr = simple_strtoul(*argv++, NULL, 16);
64                 size = simple_strtoul(*argv++, NULL, 16);
65         } else if (argc != 0) {
66                 return CMD_RET_USAGE;
67         }
68
69         iotrace_set_buffer(addr, size);
70
71         return 0;
72 }
73
74 static int do_set_region(int argc, char * const argv[])
75 {
76         ulong addr = 0, size = 0;
77
78         if (argc == 2) {
79                 addr = simple_strtoul(*argv++, NULL, 16);
80                 size = simple_strtoul(*argv++, NULL, 16);
81         } else if (argc != 0) {
82                 return CMD_RET_USAGE;
83         }
84
85         iotrace_set_region(addr, size);
86
87         return 0;
88 }
89
90 int do_iotrace(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
91 {
92         const char *cmd = argc < 2 ? NULL : argv[1];
93
94         if (!cmd)
95                 return cmd_usage(cmdtp);
96         switch (*cmd) {
97         case 'b':
98                 return do_set_buffer(argc - 2, argv + 2);
99         case 'l':
100                 return do_set_region(argc - 2, argv + 2);
101         case 'p':
102                 iotrace_set_enabled(0);
103                 break;
104         case 'r':
105                 iotrace_set_enabled(1);
106                 break;
107         case 's':
108                 do_print_stats();
109                 break;
110         case 'd':
111                 do_print_trace();
112                 break;
113         default:
114                 return CMD_RET_USAGE;
115         }
116
117         return 0;
118 }
119
120 U_BOOT_CMD(
121         iotrace,        4,      1,      do_iotrace,
122         "iotrace utility commands",
123         "stats                        - display iotrace stats\n"
124         "iotrace buffer <address> <size>      - set iotrace buffer\n"
125         "iotrace limit <address> <size>       - set iotrace region limit\n"
126         "iotrace pause                        - pause tracing\n"
127         "iotrace resume                       - resume tracing\n"
128         "iotrace dump                         - dump iotrace buffer"
129 );