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[u-boot] / 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 );