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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) Nelson Integration, LLC 2016
* Author: Eric Nelson<eric@nelint.com>
*
*/
#include <command.h>
#include <config.h>
#include <common.h>
#include <malloc.h>
#include <part.h>
static int blkc_show(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
struct block_cache_stats stats;
blkcache_stats(&stats);
printf("hits: %u\n"
"misses: %u\n"
"entries: %u\n"
"max blocks/entry: %u\n"
"max cache entries: %u\n",
stats.hits, stats.misses, stats.entries,
stats.max_blocks_per_entry, stats.max_entries);
return 0;
}
static int blkc_configure(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
unsigned blocks_per_entry, max_entries;
if (argc != 3)
return CMD_RET_USAGE;
blocks_per_entry = simple_strtoul(argv[1], 0, 0);
max_entries = simple_strtoul(argv[2], 0, 0);
blkcache_configure(blocks_per_entry, max_entries);
printf("changed to max of %u entries of %u blocks each\n",
max_entries, blocks_per_entry);
return 0;
}
static struct cmd_tbl cmd_blkc_sub[] = {
U_BOOT_CMD_MKENT(show, 0, 0, blkc_show, "", ""),
U_BOOT_CMD_MKENT(configure, 3, 0, blkc_configure, "", ""),
};
static __maybe_unused void blkc_reloc(void)
{
static int relocated;
if (!relocated) {
fixup_cmdtable(cmd_blkc_sub, ARRAY_SIZE(cmd_blkc_sub));
relocated = 1;
};
}
static int do_blkcache(struct cmd_tbl *cmdtp, int flag,
int argc, char *const argv[])
{
struct cmd_tbl *c;
#ifdef CONFIG_NEEDS_MANUAL_RELOC
blkc_reloc();
#endif
if (argc < 2)
return CMD_RET_USAGE;
/* Strip off leading argument */
argc--;
argv++;
c = find_cmd_tbl(argv[0], &cmd_blkc_sub[0], ARRAY_SIZE(cmd_blkc_sub));
if (!c)
return CMD_RET_USAGE;
return c->cmd(cmdtp, flag, argc, argv);
}
U_BOOT_CMD(
blkcache, 4, 0, do_blkcache,
"block cache diagnostics and control",
"show - show and reset statistics\n"
"blkcache configure <blocks> <entries> "
"- set max blocks per entry and max cache entries\n"
);
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