iotrace.c
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2014 Google, Inc
*/
#include <common.h>
#include <command.h>
#include <iotrace.h>
static void do_print_stats(void)
{
ulong start, size, needed_size, offset, count;
printf("iotrace is %sabled\n", iotrace_get_enabled() ? "en" : "dis");
iotrace_get_buffer(&start, &size, &needed_size, &offset, &count);
printf("Start: %08lx\n", start);
printf("Actual Size: %08lx\n", size);
printf("Needed Size: %08lx\n", needed_size);
iotrace_get_region(&start, &size);
printf("Region: %08lx\n", start);
printf("Size: %08lx\n", size);
printf("Offset: %08lx\n", offset);
printf("Output: %08lx\n", start + offset);
printf("Count: %08lx\n", count);
printf("CRC32: %08lx\n", (ulong)iotrace_get_checksum());
}
static void do_print_trace(void)
{
ulong start, size, needed_size, offset, count;
struct iotrace_record *cur_record;
iotrace_get_buffer(&start, &size, &needed_size, &offset, &count);
if (!start || !size || !count)
return;
printf("Timestamp Value Address\n");
cur_record = (struct iotrace_record *)start;
for (int i = 0; i < count; i++) {
if (cur_record->flags & IOT_WRITE)
printf("%08llu: 0x%08lx --> 0x%08llx\n",
cur_record->timestamp,
cur_record->value,
(unsigned long long)cur_record->addr);
else
printf("%08llu: 0x%08lx <-- 0x%08llx\n",
cur_record->timestamp,
cur_record->value,
(unsigned long long)cur_record->addr);
cur_record++;
}
}
static int do_set_buffer(int argc, char * const argv[])
{
ulong addr = 0, size = 0;
if (argc == 2) {
addr = simple_strtoul(*argv++, NULL, 16);
size = simple_strtoul(*argv++, NULL, 16);
} else if (argc != 0) {
return CMD_RET_USAGE;
}
iotrace_set_buffer(addr, size);
return 0;
}
static int do_set_region(int argc, char * const argv[])
{
ulong addr = 0, size = 0;
if (argc == 2) {
addr = simple_strtoul(*argv++, NULL, 16);
size = simple_strtoul(*argv++, NULL, 16);
} else if (argc != 0) {
return CMD_RET_USAGE;
}
iotrace_set_region(addr, size);
return 0;
}
int do_iotrace(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
const char *cmd = argc < 2 ? NULL : argv[1];
if (!cmd)
return cmd_usage(cmdtp);
switch (*cmd) {
case 'b':
return do_set_buffer(argc - 2, argv + 2);
case 'l':
return do_set_region(argc - 2, argv + 2);
case 'p':
iotrace_set_enabled(0);
break;
case 'r':
iotrace_set_enabled(1);
break;
case 's':
do_print_stats();
break;
case 'd':
do_print_trace();
break;
default:
return CMD_RET_USAGE;
}
return 0;
}
U_BOOT_CMD(
iotrace, 4, 1, do_iotrace,
"iotrace utility commands",
"stats - display iotrace stats\n"
"iotrace buffer <address> <size> - set iotrace buffer\n"
"iotrace limit <address> <size> - set iotrace region limit\n"
"iotrace pause - pause tracing\n"
"iotrace resume - resume tracing\n"
"iotrace dump - dump iotrace buffer"
);