[J-u-boot.git] / cmd / blkcache.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) Nelson Integration, LLC 2016
 * Author: Eric Nelson<[email protected]>
 *
 */
#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"
);
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
e40cf34a EN	2	/*
	3	* Copyright (C) Nelson Integration, LLC 2016
	4	* Author: Eric Nelson<[email protected]>
	5	*
e40cf34a	6	*/
09140113	7	#include <command.h>
e40cf34a EN	8	#include <config.h>
	9	#include <common.h>
	10	#include <malloc.h>
	11	#include <part.h>
	12
09140113 SG	13	static int blkc_show(struct cmd_tbl *cmdtp, int flag,
09140113 SG	14	int argc, char *const argv[])
e40cf34a EN	15	{
	16	struct block_cache_stats stats;
	17	blkcache_stats(&stats);
	18
7e872146 EN	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",
e40cf34a EN	24	stats.hits, stats.misses, stats.entries,
	25	stats.max_blocks_per_entry, stats.max_entries);
	26	return 0;
	27	}
	28
09140113 SG	29	static int blkc_configure(struct cmd_tbl *cmdtp, int flag,
09140113 SG	30	int argc, char *const argv[])
e40cf34a EN	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
09140113	44	static struct cmd_tbl cmd_blkc_sub[] = {
e40cf34a EN	45	U_BOOT_CMD_MKENT(show, 0, 0, blkc_show, "", ""),
	46	U_BOOT_CMD_MKENT(configure, 3, 0, blkc_configure, "", ""),
	47	};
	48
	49	static __maybe_unused void blkc_reloc(void)
	50	{
	51	static int relocated;
	52
	53	if (!relocated) {
	54	fixup_cmdtable(cmd_blkc_sub, ARRAY_SIZE(cmd_blkc_sub));
	55	relocated = 1;
	56	};
	57	}
	58
09140113 SG	59	static int do_blkcache(struct cmd_tbl *cmdtp, int flag,
09140113 SG	60	int argc, char *const argv[])
e40cf34a	61	{
09140113	62	struct cmd_tbl *c;
e40cf34a EN	63
	64	#ifdef CONFIG_NEEDS_MANUAL_RELOC
	65	blkc_reloc();
	66	#endif
	67	if (argc < 2)
	68	return CMD_RET_USAGE;
	69
	70	/* Strip off leading argument */
	71	argc--;
	72	argv++;
	73
	74	c = find_cmd_tbl(argv[0], &cmd_blkc_sub[0], ARRAY_SIZE(cmd_blkc_sub));
	75
195c94a2	76	if (!c)
e40cf34a EN	77	return CMD_RET_USAGE;
e40cf34a EN	78
195c94a2	79	return c->cmd(cmdtp, flag, argc, argv);
e40cf34a EN	80	}
	81
	82	U_BOOT_CMD(
	83	blkcache, 4, 0, do_blkcache,
	84	"block cache diagnostics and control",
	85	"show - show and reset statistics\n"
f86eba03 ABK	86	"blkcache configure <blocks> <entries> "
f86eba03 ABK	87	"- set max blocks per entry and max cache entries\n"
e40cf34a	88	);