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 <config.h> 8 #include <common.h> 9 #include <malloc.h> 10 #include <part.h> 11 12 static int blkc_show(cmd_tbl_t *cmdtp, int flag, 13 int argc, char * const argv[]) 14 { 15 struct block_cache_stats stats; 16 blkcache_stats(&stats); 17 18 printf("hits: %u\n" 19 "misses: %u\n" 20 "entries: %u\n" 21 "max blocks/entry: %u\n" 22 "max cache entries: %u\n", 23 stats.hits, stats.misses, stats.entries, 24 stats.max_blocks_per_entry, stats.max_entries); 25 return 0; 26 } 27 28 static int blkc_configure(cmd_tbl_t *cmdtp, int flag, 29 int argc, char * const argv[]) 30 { 31 unsigned blocks_per_entry, max_entries; 32 if (argc != 3) 33 return CMD_RET_USAGE; 34 35 blocks_per_entry = simple_strtoul(argv[1], 0, 0); 36 max_entries = simple_strtoul(argv[2], 0, 0); 37 blkcache_configure(blocks_per_entry, max_entries); 38 printf("changed to max of %u entries of %u blocks each\n", 39 max_entries, blocks_per_entry); 40 return 0; 41 } 42 43 static cmd_tbl_t cmd_blkc_sub[] = { 44 U_BOOT_CMD_MKENT(show, 0, 0, blkc_show, "", ""), 45 U_BOOT_CMD_MKENT(configure, 3, 0, blkc_configure, "", ""), 46 }; 47 48 static __maybe_unused void blkc_reloc(void) 49 { 50 static int relocated; 51 52 if (!relocated) { 53 fixup_cmdtable(cmd_blkc_sub, ARRAY_SIZE(cmd_blkc_sub)); 54 relocated = 1; 55 }; 56 } 57 58 static int do_blkcache(cmd_tbl_t *cmdtp, int flag, 59 int argc, char * const argv[]) 60 { 61 cmd_tbl_t *c; 62 63 #ifdef CONFIG_NEEDS_MANUAL_RELOC 64 blkc_reloc(); 65 #endif 66 if (argc < 2) 67 return CMD_RET_USAGE; 68 69 /* Strip off leading argument */ 70 argc--; 71 argv++; 72 73 c = find_cmd_tbl(argv[0], &cmd_blkc_sub[0], ARRAY_SIZE(cmd_blkc_sub)); 74 75 if (!c) 76 return CMD_RET_USAGE; 77 78 return c->cmd(cmdtp, flag, argc, argv); 79 } 80 81 U_BOOT_CMD( 82 blkcache, 4, 0, do_blkcache, 83 "block cache diagnostics and control", 84 "show - show and reset statistics\n" 85 "blkcache configure blocks entries\n" 86 ); 87