1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) Nelson Integration, LLC 2016
4 * Author: Eric Nelson<eric@nelint.com>
5 *
6 */
7#include <command.h>
8#include <config.h>
9#include <common.h>
10#include <malloc.h>
11#include <part.h>
12
13static int blkc_show(struct cmd_tbl *cmdtp, int flag,
14		     int argc, char *const argv[])
15{
16	struct block_cache_stats stats;
17	blkcache_stats(&stats);
18
19	printf("hits: %u\n"
20	       "misses: %u\n"
21	       "entries: %u\n"
22	       "max blocks/entry: %u\n"
23	       "max cache entries: %u\n",
24	       stats.hits, stats.misses, stats.entries,
25	       stats.max_blocks_per_entry, stats.max_entries);
26	return 0;
27}
28
29static int blkc_configure(struct cmd_tbl *cmdtp, int flag,
30			  int argc, char *const argv[])
31{
32	unsigned blocks_per_entry, max_entries;
33	if (argc != 3)
34		return CMD_RET_USAGE;
35
36	blocks_per_entry = simple_strtoul(argv[1], 0, 0);
37	max_entries = simple_strtoul(argv[2], 0, 0);
38	blkcache_configure(blocks_per_entry, max_entries);
39	printf("changed to max of %u entries of %u blocks each\n",
40	       max_entries, blocks_per_entry);
41	return 0;
42}
43
44static struct cmd_tbl cmd_blkc_sub[] = {
45	U_BOOT_CMD_MKENT(show, 0, 0, blkc_show, "", ""),
46	U_BOOT_CMD_MKENT(configure, 3, 0, blkc_configure, "", ""),
47};
48
49static int do_blkcache(struct cmd_tbl *cmdtp, int flag,
50		       int argc, char *const argv[])
51{
52	struct cmd_tbl *c;
53
54	if (argc < 2)
55		return CMD_RET_USAGE;
56
57	/* Strip off leading argument */
58	argc--;
59	argv++;
60
61	c = find_cmd_tbl(argv[0], &cmd_blkc_sub[0], ARRAY_SIZE(cmd_blkc_sub));
62
63	if (!c)
64		return CMD_RET_USAGE;
65
66	return c->cmd(cmdtp, flag, argc, argv);
67}
68
69U_BOOT_CMD(
70	blkcache, 4, 0, do_blkcache,
71	"block cache diagnostics and control",
72	"show - show and reset statistics\n"
73	"blkcache configure <blocks> <entries> "
74	"- set max blocks per entry and max cache entries\n"
75);
76