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