test/dm/cmd_dm.c

   1 /*
   2  * Copyright (c) 2013 Google, Inc
   3  *
   4  * (C) Copyright 2012
   5  * Marek Vasut <marex@denx.de>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11 #include <dm.h>
  12 #include <malloc.h>
  13 #include <errno.h>
  14 #include <asm/io.h>
  15 #include <dm/root.h>
  16 #include <dm/test.h>
  17 #include <dm/uclass-internal.h>
  18
  19 static void show_devices(struct udevice *dev, int depth, int last_flag)
  20 {
  21         int i, is_last;
  22         struct udevice *child;
  23         char class_name[12];
  24
  25         /* print the first 11 characters to not break the tree-format. */
  26         strlcpy(class_name, dev->uclass->uc_drv->name, sizeof(class_name));
  27         printf(" %-11s [ %c ]    ", class_name,
  28                dev->flags & DM_FLAG_ACTIVATED ? '+' : ' ');
  29
  30         for (i = depth; i >= 0; i--) {
  31                 is_last = (last_flag >> i) & 1;
  32                 if (i) {
  33                         if (is_last)
  34                                 printf("    ");
  35                         else
  36                                 printf("|   ");
  37                 } else {
  38                         if (is_last)
  39                                 printf("`-- ");
  40                         else
  41                                 printf("|-- ");
  42                 }
  43         }
  44
  45         printf("%s\n", dev->name);
  46
  47         list_for_each_entry(child, &dev->child_head, sibling_node) {
  48                 is_last = list_is_last(&child->sibling_node, &dev->child_head);
  49                 show_devices(child, depth + 1, (last_flag << 1) | is_last);
  50         }
  51 }
  52
  53 static int do_dm_dump_all(cmd_tbl_t *cmdtp, int flag, int argc,
  54                           char * const argv[])
  55 {
  56         struct udevice *root;
  57
  58         root = dm_root();
  59         if (root) {
  60                 printf(" Class       Probed   Name\n");
  61                 printf("----------------------------------------\n");
  62                 show_devices(root, -1, 0);
  63         }
  64
  65         return 0;
  66 }
  67
  68 /**
  69  * dm_display_line() - Display information about a single device
  70  *
  71  * Displays a single line of information with an option prefix
  72  *
  73  * @dev:        Device to display
  74  */
  75 static void dm_display_line(struct udevice *dev)
  76 {
  77         printf("- %c %s @ %08lx",
  78                dev->flags & DM_FLAG_ACTIVATED ? '*' : ' ',
  79                dev->name, (ulong)map_to_sysmem(dev));
  80         if (dev->req_seq != -1)
  81                 printf(", %d", dev->req_seq);
  82         puts("\n");
  83 }
  84
  85 static int do_dm_dump_uclass(cmd_tbl_t *cmdtp, int flag, int argc,
  86                              char * const argv[])
  87 {
  88         struct uclass *uc;
  89         int ret;
  90         int id;
  91
  92         for (id = 0; id < UCLASS_COUNT; id++) {
  93                 struct udevice *dev;
  94
  95                 ret = uclass_get(id, &uc);
  96                 if (ret)
  97                         continue;
  98
  99                 printf("uclass %d: %s\n", id, uc->uc_drv->name);
 100                 if (list_empty(&uc->dev_head))
 101                         continue;
 102                 list_for_each_entry(dev, &uc->dev_head, uclass_node) {
 103                         dm_display_line(dev);
 104                 }
 105                 puts("\n");
 106         }
 107
 108         return 0;
 109 }
 110
 111 #ifdef CONFIG_DM_TEST
 112 static int do_dm_test(cmd_tbl_t *cmdtp, int flag, int argc,
 113                           char * const argv[])
 114 {
 115         return dm_test_main();
 116 }
 117 #define TEST_HELP "\ndm test         Run tests"
 118 #else
 119 #define TEST_HELP
 120 #endif
 121
 122 static cmd_tbl_t test_commands[] = {
 123         U_BOOT_CMD_MKENT(tree, 0, 1, do_dm_dump_all, "", ""),
 124         U_BOOT_CMD_MKENT(uclass, 1, 1, do_dm_dump_uclass, "", ""),
 125 #ifdef CONFIG_DM_TEST
 126         U_BOOT_CMD_MKENT(test, 1, 1, do_dm_test, "", ""),
 127 #endif
 128 };
 129
 130 static int do_dm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 131 {
 132         cmd_tbl_t *test_cmd;
 133         int ret;
 134
 135         if (argc != 2)
 136                 return CMD_RET_USAGE;
 137         test_cmd = find_cmd_tbl(argv[1], test_commands,
 138                                 ARRAY_SIZE(test_commands));
 139         argc -= 2;
 140         argv += 2;
 141         if (!test_cmd || argc > test_cmd->maxargs)
 142                 return CMD_RET_USAGE;
 143
 144         ret = test_cmd->cmd(test_cmd, flag, argc, argv);
 145
 146         return cmd_process_error(test_cmd, ret);
 147 }
 148
 149 U_BOOT_CMD(
 150         dm,     2,      1,      do_dm,
 151         "Driver model low level access",
 152         "tree         Dump driver model tree ('*' = activated)\n"
 153         "dm uclass        Dump list of instances for each uclass"
 154         TEST_HELP
 155 );