[U-Boot] [PATCH 7/7] dm: Add "dm dump" command

[Marek Vasut]

Dumps the content of system tree

Signed-off-by: Marek Vasut <marex at denx.de>
---
 common/dm/Makefile |    2 +-
 common/dm/debug.c  |  106 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 include/dm/debug.h |   33 ++++++++++++++++
 3 files changed, 140 insertions(+), 1 deletion(-)
 create mode 100644 common/dm/debug.c
 create mode 100644 include/dm/debug.h

diff --git a/common/dm/Makefile b/common/dm/Makefile
index 6510021..2096c6b 100644
--- a/common/dm/Makefile
+++ b/common/dm/Makefile
@@ -21,7 +21,7 @@ include $(TOPDIR)/config.mk
 
 LIB	:= $(obj)libdm.o
 
-COBJS	:= core.o driver.o lists.o tree.o root.o
+COBJS	:= core.o debug.o driver.o lists.o tree.o root.o
 SRCS	:= $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
 
diff --git a/common/dm/debug.c b/common/dm/debug.c
new file mode 100644
index 0000000..da669b7
--- /dev/null
+++ b/common/dm/debug.c
@@ -0,0 +1,106 @@
+/*
+ * (C) Copyright 2012
+ * Marek Vasut <marex at denx.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <malloc.h>
+#include <dm/manager.h>
+#include <dm/structures.h>
+#include <dm/debug.h>
+#include <common.h>
+#include <errno.h>
+
+static int display_succ(struct instance *in, char *buf)
+{
+	int len;
+	int ip = 0;
+	char local[16];
+	struct driver_instance *pos, *n, *prev = NULL, *outer;
+
+	outer = container_of(in, struct driver_instance, i);
+	printf("%s- %s @ 0x%p", buf, in->info->name, in);
+	if (outer->flags & DRIVER_FLAG_ACTIVATED)
+		puts(" - activated");
+	puts("\n");
+
+	if (list_empty(&in->succ))
+		return 0;
+
+	len = strlen(buf);
+	strncpy(local, buf, sizeof(local));
+	snprintf(local + len, 2, "|");
+	if (len && local[len - 1] == '`')
+		local[len - 1] = ' ';
+
+	list_for_each_entry_safe(pos, n, &in->succ, list) {
+		if (ip++)
+			display_succ(&prev->i, local);
+		prev = pos;
+	}
+
+	snprintf(local + len, 2, "`");
+	display_succ(&prev->i, local);
+
+	return 0;
+}
+
+int dm_dump_all()
+{
+	struct instance *root;
+	root = get_root_instance();
+	printf("ROOT 0x%p\n", root);
+	return dm_dump(root);
+}
+
+int dm_dump(struct instance *dev)
+{
+	if (!dev)
+		return -EINVAL;
+	return display_succ(dev, "");
+}
+
+static int do_dm(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	struct instance *root;
+
+	if (argc != 2)
+		return -EINVAL;
+	if (!strncmp(argv[1], "dump", 4))
+		return dm_dump_all();
+
+	if (!strncmp(argv[1], "remove", 6)) {
+		root = get_root_instance();
+		return driver_remove(root);
+	}
+
+	if (!strncmp(argv[1], "unbind", 6)) {
+		root = get_root_instance();
+		return driver_unbind(root);
+	}
+
+	return -EINVAL;
+}
+
+U_BOOT_CMD(
+	dm,	2,	1,	do_dm,
+	"Driver model ops",
+	"<op>\n"
+);
diff --git a/include/dm/debug.h b/include/dm/debug.h
new file mode 100644
index 0000000..df86113
--- /dev/null
+++ b/include/dm/debug.h
@@ -0,0 +1,33 @@
+/*
+ * (C) Copyright 2012
+ * Pavel Herrmann <morpheus.ibis at gmail.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+
+#ifndef _DM_DEBUG_H_
+#define _DM_DEBUG_H_ 1
+
+#include <dm/structures.h>
+
+int dm_dump_all(void);
+int dm_dump(struct instance *i);
+
+#endif
-- 
1.7.10.4