Eric Lee / smarc-uboot

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cmd/blkcache.c 1.9 KB
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d41ce506b   Eric Lee   Initial Release, ... 
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  /*
   * Copyright (C) Nelson Integration, LLC 2016
   * Author: Eric Nelson<eric@nelint.com>
   *
   * SPDX-License-Identifier:	GPL-2.0+
   *
   */
  #include <config.h>
  #include <common.h>
  #include <malloc.h>
  #include <part.h>
  
  static int blkc_show(cmd_tbl_t *cmdtp, int flag,
  		     int argc, char * const argv[])
  {
  	struct block_cache_stats stats;
  	blkcache_stats(&stats);
  
  	printf("hits: %u
  "
  	       "misses: %u
  "
  	       "entries: %u
  "
  	       "max blocks/entry: %u
  "
  	       "max cache entries: %u
  ",
  	       stats.hits, stats.misses, stats.entries,
  	       stats.max_blocks_per_entry, stats.max_entries);
  	return 0;
  }
  
  static int blkc_configure(cmd_tbl_t *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
  ",
  	       max_entries, blocks_per_entry);
  	return 0;
  }
  
  static cmd_tbl_t 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(cmd_tbl_t *cmdtp, int flag,
  		       int argc, char * const argv[])
  {
  	cmd_tbl_t *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
  "
  	"blkcache configure blocks entries
  "
  );