test/dm/core.c - github/trini/u-boot - Gitiles

 /*
  * Tests for the core driver model code
  *
  * Copyright (c) 2013 Google, Inc
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */

 #include <common.h>
 #include <errno.h>
 #include <dm.h>
 #include <fdtdec.h>
 #include <malloc.h>
 #include <dm/device-internal.h>
 #include <dm/root.h>
 #include <dm/ut.h>
 #include <dm/util.h>
 #include <dm/test.h>
 #include <dm/uclass-internal.h>

 DECLARE_GLOBAL_DATA_PTR;

 enum {
 	TEST_INTVAL1		= 0,
 	TEST_INTVAL2		= 3,
 	TEST_INTVAL3		= 6,
 	TEST_INTVAL_MANUAL	= 101112,
 };

 static const struct dm_test_pdata test_pdata[] = {
 	{ .ping_add		= TEST_INTVAL1, },
 	{ .ping_add		= TEST_INTVAL2, },
 	{ .ping_add		= TEST_INTVAL3, },
 };

 static const struct dm_test_pdata test_pdata_manual = {
 	.ping_add		= TEST_INTVAL_MANUAL,
 };

 U_BOOT_DEVICE(dm_test_info1) = {
 	.name = "test_drv",
 	.platdata = &test_pdata[0],
 };

 U_BOOT_DEVICE(dm_test_info2) = {
 	.name = "test_drv",
 	.platdata = &test_pdata[1],
 };

 U_BOOT_DEVICE(dm_test_info3) = {
 	.name = "test_drv",
 	.platdata = &test_pdata[2],
 };

 static struct driver_info driver_info_manual = {
 	.name = "test_manual_drv",
 	.platdata = &test_pdata_manual,
 };

 /* Test that binding with platdata occurs correctly */
 static int dm_test_autobind(struct dm_test_state *dms)
 {
 	struct device *dev;

 	/*
 	 * We should have a single class (UCLASS_ROOT) and a single root
 	 * device with no children.
 	 */
 	ut_assert(dms->root);
 	ut_asserteq(1, list_count_items(&gd->uclass_root));
 	ut_asserteq(0, list_count_items(&gd->dm_root->child_head));
 	ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_POST_BIND]);

 	ut_assertok(dm_scan_platdata());

 	/* We should have our test class now at least, plus more children */
 	ut_assert(1 < list_count_items(&gd->uclass_root));
 	ut_assert(0 < list_count_items(&gd->dm_root->child_head));

 	/* Our 3 dm_test_infox children should be bound to the test uclass */
 	ut_asserteq(3, dm_testdrv_op_count[DM_TEST_OP_POST_BIND]);

 	/* No devices should be probed */
 	list_for_each_entry(dev, &gd->dm_root->child_head, sibling_node)
 		ut_assert(!(dev->flags & DM_FLAG_ACTIVATED));

 	/* Our test driver should have been bound 3 times */
 	ut_assert(dm_testdrv_op_count[DM_TEST_OP_BIND] == 3);

 	return 0;
 }
 DM_TEST(dm_test_autobind, 0);

 /* Test that autoprobe finds all the expected devices */
 static int dm_test_autoprobe(struct dm_test_state *dms)
 {
 	int expected_base_add;
 	struct device *dev;
 	struct uclass *uc;
 	int i;

 	ut_assertok(uclass_get(UCLASS_TEST, &uc));
 	ut_assert(uc);

 	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_INIT]);
 	ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_POST_PROBE]);

 	/* The root device should not be activated until needed */
 	ut_assert(!(dms->root->flags & DM_FLAG_ACTIVATED));

 	/*
 	 * We should be able to find the three test devices, and they should
 	 * all be activated as they are used (lazy activation, required by
 	 * U-Boot)
 	 */
 	for (i = 0; i < 3; i++) {
 		ut_assertok(uclass_find_device(UCLASS_TEST, i, &dev));
 		ut_assert(dev);
 		ut_assertf(!(dev->flags & DM_FLAG_ACTIVATED),
 			   "Driver %d/%s already activated", i, dev->name);

 		/* This should activate it */
 		ut_assertok(uclass_get_device(UCLASS_TEST, i, &dev));
 		ut_assert(dev);
 		ut_assert(dev->flags & DM_FLAG_ACTIVATED);

 		/* Activating a device should activate the root device */
 		if (!i)
 			ut_assert(dms->root->flags & DM_FLAG_ACTIVATED);
 	}

 	/* Our 3 dm_test_infox children should be passed to post_probe */
 	ut_asserteq(3, dm_testdrv_op_count[DM_TEST_OP_POST_PROBE]);

 	/* Also we can check the per-device data */
 	expected_base_add = 0;
 	for (i = 0; i < 3; i++) {
 		struct dm_test_uclass_perdev_priv *priv;
 		struct dm_test_pdata *pdata;

 		ut_assertok(uclass_find_device(UCLASS_TEST, i, &dev));
 		ut_assert(dev);

 		priv = dev->uclass_priv;
 		ut_assert(priv);
 		ut_asserteq(expected_base_add, priv->base_add);

 		pdata = dev->platdata;
 		expected_base_add += pdata->ping_add;
 	}

 	return 0;
 }
 DM_TEST(dm_test_autoprobe, DM_TESTF_SCAN_PDATA);

 /* Check that we see the correct platdata in each device */
 static int dm_test_platdata(struct dm_test_state *dms)
 {
 	const struct dm_test_pdata *pdata;
 	struct device *dev;
 	int i;

 	for (i = 0; i < 3; i++) {
 		ut_assertok(uclass_find_device(UCLASS_TEST, i, &dev));
 		ut_assert(dev);
 		pdata = dev->platdata;
 		ut_assert(pdata->ping_add == test_pdata[i].ping_add);
 	}

 	return 0;
 }
 DM_TEST(dm_test_platdata, DM_TESTF_SCAN_PDATA);

 /* Test that we can bind, probe, remove, unbind a driver */
 static int dm_test_lifecycle(struct dm_test_state *dms)
 {
 	int op_count[DM_TEST_OP_COUNT];
 	struct device *dev, *test_dev;
 	int pingret;
 	int ret;

 	memcpy(op_count, dm_testdrv_op_count, sizeof(op_count));

 	ut_assertok(device_bind_by_name(dms->root, &driver_info_manual,
 					&dev));
 	ut_assert(dev);
 	ut_assert(dm_testdrv_op_count[DM_TEST_OP_BIND]
 			== op_count[DM_TEST_OP_BIND] + 1);
 	ut_assert(!dev->priv);

 	/* Probe the device - it should fail allocating private data */
 	dms->force_fail_alloc = 1;
 	ret = device_probe(dev);
 	ut_assert(ret == -ENOMEM);
 	ut_assert(dm_testdrv_op_count[DM_TEST_OP_PROBE]
 			== op_count[DM_TEST_OP_PROBE] + 1);
 	ut_assert(!dev->priv);

 	/* Try again without the alloc failure */
 	dms->force_fail_alloc = 0;
 	ut_assertok(device_probe(dev));
 	ut_assert(dm_testdrv_op_count[DM_TEST_OP_PROBE]
 			== op_count[DM_TEST_OP_PROBE] + 2);
 	ut_assert(dev->priv);

 	/* This should be device 3 in the uclass */
 	ut_assertok(uclass_find_device(UCLASS_TEST, 3, &test_dev));
 	ut_assert(dev == test_dev);

 	/* Try ping */
 	ut_assertok(test_ping(dev, 100, &pingret));
 	ut_assert(pingret == 102);

 	/* Now remove device 3 */
 	ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_PRE_REMOVE]);
 	ut_assertok(device_remove(dev));
 	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_PRE_REMOVE]);

 	ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_UNBIND]);
 	ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_PRE_UNBIND]);
 	ut_assertok(device_unbind(dev));
 	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_UNBIND]);
 	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_PRE_UNBIND]);

 	return 0;
 }
 DM_TEST(dm_test_lifecycle, DM_TESTF_SCAN_PDATA | DM_TESTF_PROBE_TEST);

 /* Test that we can bind/unbind and the lists update correctly */
 static int dm_test_ordering(struct dm_test_state *dms)
 {
 	struct device *dev, *dev_penultimate, *dev_last, *test_dev;
 	int pingret;

 	ut_assertok(device_bind_by_name(dms->root, &driver_info_manual,
 					&dev));
 	ut_assert(dev);

 	/* Bind two new devices (numbers 4 and 5) */
 	ut_assertok(device_bind_by_name(dms->root, &driver_info_manual,
 					&dev_penultimate));
 	ut_assert(dev_penultimate);
 	ut_assertok(device_bind_by_name(dms->root, &driver_info_manual,
 					&dev_last));
 	ut_assert(dev_last);

 	/* Now remove device 3 */
 	ut_assertok(device_remove(dev));
 	ut_assertok(device_unbind(dev));

 	/* The device numbering should have shifted down one */
 	ut_assertok(uclass_find_device(UCLASS_TEST, 3, &test_dev));
 	ut_assert(dev_penultimate == test_dev);
 	ut_assertok(uclass_find_device(UCLASS_TEST, 4, &test_dev));
 	ut_assert(dev_last == test_dev);

 	/* Add back the original device 3, now in position 5 */
 	ut_assertok(device_bind_by_name(dms->root, &driver_info_manual, &dev));
 	ut_assert(dev);

 	/* Try ping */
 	ut_assertok(test_ping(dev, 100, &pingret));
 	ut_assert(pingret == 102);

 	/* Remove 3 and 4 */
 	ut_assertok(device_remove(dev_penultimate));
 	ut_assertok(device_unbind(dev_penultimate));
 	ut_assertok(device_remove(dev_last));
 	ut_assertok(device_unbind(dev_last));

 	/* Our device should now be in position 3 */
 	ut_assertok(uclass_find_device(UCLASS_TEST, 3, &test_dev));
 	ut_assert(dev == test_dev);

 	/* Now remove device 3 */
 	ut_assertok(device_remove(dev));
 	ut_assertok(device_unbind(dev));

 	return 0;
 }
 DM_TEST(dm_test_ordering, DM_TESTF_SCAN_PDATA);

 /* Check that we can perform operations on a device (do a ping) */
 int dm_check_operations(struct dm_test_state *dms, struct device *dev,
 			uint32_t base, struct dm_test_priv *priv)
 {
 	int expected;
 	int pingret;

 	/* Getting the child device should allocate platdata / priv */
 	ut_assertok(testfdt_ping(dev, 10, &pingret));
 	ut_assert(dev->priv);
 	ut_assert(dev->platdata);

 	expected = 10 + base;
 	ut_asserteq(expected, pingret);

 	/* Do another ping */
 	ut_assertok(testfdt_ping(dev, 20, &pingret));
 	expected = 20 + base;
 	ut_asserteq(expected, pingret);

 	/* Now check the ping_total */
 	priv = dev->priv;
 	ut_asserteq(DM_TEST_START_TOTAL + 10 + 20 + base * 2,
 		    priv->ping_total);

 	return 0;
 }

 /* Check that we can perform operations on devices */
 static int dm_test_operations(struct dm_test_state *dms)
 {
 	struct device *dev;
 	int i;

 	/*
 	 * Now check that the ping adds are what we expect. This is using the
 	 * ping-add property in each node.
 	 */
 	for (i = 0; i < ARRAY_SIZE(test_pdata); i++) {
 		uint32_t base;

 		ut_assertok(uclass_get_device(UCLASS_TEST, i, &dev));

 		/*
 		 * Get the 'reg' property, which tells us what the ping add
 		 * should be. We don't use the platdata because we want
 		 * to test the code that sets that up (testfdt_drv_probe()).
 		 */
 		base = test_pdata[i].ping_add;
 		debug("dev=%d, base=%d\n", i, base);

 		ut_assert(!dm_check_operations(dms, dev, base, dev->priv));
 	}

 	return 0;
 }
 DM_TEST(dm_test_operations, DM_TESTF_SCAN_PDATA);

 /* Remove all drivers and check that things work */
 static int dm_test_remove(struct dm_test_state *dms)
 {
 	struct device *dev;
 	int i;

 	for (i = 0; i < 3; i++) {
 		ut_assertok(uclass_find_device(UCLASS_TEST, i, &dev));
 		ut_assert(dev);
 		ut_assertf(dev->flags & DM_FLAG_ACTIVATED,
 			   "Driver %d/%s not activated", i, dev->name);
 		ut_assertok(device_remove(dev));
 		ut_assertf(!(dev->flags & DM_FLAG_ACTIVATED),
 			   "Driver %d/%s should have deactivated", i,
 			   dev->name);
 		ut_assert(!dev->priv);
 	}

 	return 0;
 }
 DM_TEST(dm_test_remove, DM_TESTF_SCAN_PDATA | DM_TESTF_PROBE_TEST);

 /* Remove and recreate everything, check for memory leaks */
 static int dm_test_leak(struct dm_test_state *dms)
 {
 	int i;

 	for (i = 0; i < 2; i++) {
 		struct mallinfo start, end;
 		struct device *dev;
 		int ret;
 		int id;

 		start = mallinfo();
 		if (!start.uordblks)
 			puts("Warning: Please add '#define DEBUG' to the top of common/dlmalloc.c\n");

 		ut_assertok(dm_scan_platdata());
 		ut_assertok(dm_scan_fdt(gd->fdt_blob));

 		/* Scanning the uclass is enough to probe all the devices */
 		for (id = UCLASS_ROOT; id < UCLASS_COUNT; id++) {
 			for (ret = uclass_first_device(UCLASS_TEST, &dev);
 			     dev;
 			     ret = uclass_next_device(&dev))
 				;
 			ut_assertok(ret);
 		}

 		/* Don't delete the root class, since we started with that */
 		for (id = UCLASS_ROOT + 1; id < UCLASS_COUNT; id++) {
 			struct uclass *uc;

 			uc = uclass_find(id);
 			if (!uc)
 				continue;
 			ut_assertok(uclass_destroy(uc));
 		}

 		end = mallinfo();
 		ut_asserteq(start.uordblks, end.uordblks);
 	}

 	return 0;
 }
 DM_TEST(dm_test_leak, 0);

 /* Test uclass init/destroy methods */
 static int dm_test_uclass(struct dm_test_state *dms)
 {
 	struct uclass *uc;

 	ut_assertok(uclass_get(UCLASS_TEST, &uc));
 	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_INIT]);
 	ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_DESTROY]);
 	ut_assert(uc->priv);

 	ut_assertok(uclass_destroy(uc));
 	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_INIT]);
 	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_DESTROY]);

 	return 0;
 }
 DM_TEST(dm_test_uclass, 0);

 /**
  * create_children() - Create children of a parent node
  *
  * @dms:	Test system state
  * @parent:	Parent device
  * @count:	Number of children to create
  * @key:	Key value to put in first child. Subsequence children
  *		receive an incrementing value
  * @child:	If not NULL, then the child device pointers are written into
  *		this array.
  * @return 0 if OK, -ve on error
  */
 static int create_children(struct dm_test_state *dms, struct device *parent,
 			   int count, int key, struct device *child[])
 {
 	struct device *dev;
 	int i;

 	for (i = 0; i < count; i++) {
 		struct dm_test_pdata *pdata;

 		ut_assertok(device_bind_by_name(parent, &driver_info_manual,
 						&dev));
 		pdata = calloc(1, sizeof(*pdata));
 		pdata->ping_add = key + i;
 		dev->platdata = pdata;
 		if (child)
 			child[i] = dev;
 	}

 	return 0;
 }

 #define NODE_COUNT	10

 static int dm_test_children(struct dm_test_state *dms)
 {
 	struct device *top[NODE_COUNT];
 	struct device *child[NODE_COUNT];
 	struct device *grandchild[NODE_COUNT];
 	struct device *dev;
 	int total;
 	int ret;
 	int i;

 	/* We don't care about the numbering for this test */
 	dms->skip_post_probe = 1;

 	ut_assert(NODE_COUNT > 5);

 	/* First create 10 top-level children */
 	ut_assertok(create_children(dms, dms->root, NODE_COUNT, 0, top));

 	/* Now a few have their own children */
 	ut_assertok(create_children(dms, top[2], NODE_COUNT, 2, NULL));
 	ut_assertok(create_children(dms, top[5], NODE_COUNT, 5, child));

 	/* And grandchildren */
 	for (i = 0; i < NODE_COUNT; i++)
 		ut_assertok(create_children(dms, child[i], NODE_COUNT, 50 * i,
 					    i == 2 ? grandchild : NULL));

 	/* Check total number of devices */
 	total = NODE_COUNT * (3 + NODE_COUNT);
 	ut_asserteq(total, dm_testdrv_op_count[DM_TEST_OP_BIND]);

 	/* Try probing one of the grandchildren */
 	ut_assertok(uclass_get_device(UCLASS_TEST,
 				      NODE_COUNT * 3 + 2 * NODE_COUNT, &dev));
 	ut_asserteq_ptr(grandchild[0], dev);

 	/*
 	 * This should have probed the child and top node also, for a total
 	 * of 3 nodes.
 	 */
 	ut_asserteq(3, dm_testdrv_op_count[DM_TEST_OP_PROBE]);

 	/* Probe the other grandchildren */
 	for (i = 1; i < NODE_COUNT; i++)
 		ut_assertok(device_probe(grandchild[i]));

 	ut_asserteq(2 + NODE_COUNT, dm_testdrv_op_count[DM_TEST_OP_PROBE]);

 	/* Probe everything */
 	for (ret = uclass_first_device(UCLASS_TEST, &dev);
 	     dev;
 	     ret = uclass_next_device(&dev))
 		;
 	ut_assertok(ret);

 	ut_asserteq(total, dm_testdrv_op_count[DM_TEST_OP_PROBE]);

 	/* Remove a top-level child and check that the children are removed */
 	ut_assertok(device_remove(top[2]));
 	ut_asserteq(NODE_COUNT + 1, dm_testdrv_op_count[DM_TEST_OP_REMOVE]);
 	dm_testdrv_op_count[DM_TEST_OP_REMOVE] = 0;

 	/* Try one with grandchildren */
 	ut_assertok(uclass_get_device(UCLASS_TEST, 5, &dev));
 	ut_asserteq_ptr(dev, top[5]);
 	ut_assertok(device_remove(dev));
 	ut_asserteq(1 + NODE_COUNT * (1 + NODE_COUNT),
 		    dm_testdrv_op_count[DM_TEST_OP_REMOVE]);

 	/* Try the same with unbind */
 	ut_assertok(device_unbind(top[2]));
 	ut_asserteq(NODE_COUNT + 1, dm_testdrv_op_count[DM_TEST_OP_UNBIND]);
 	dm_testdrv_op_count[DM_TEST_OP_UNBIND] = 0;

 	/* Try one with grandchildren */
 	ut_assertok(uclass_get_device(UCLASS_TEST, 5, &dev));
 	ut_asserteq_ptr(dev, top[6]);
 	ut_assertok(device_unbind(top[5]));
 	ut_asserteq(1 + NODE_COUNT * (1 + NODE_COUNT),
 		    dm_testdrv_op_count[DM_TEST_OP_UNBIND]);

 	return 0;
 }
 DM_TEST(dm_test_children, 0);
	/*
	* Tests for the core driver model code
	*
	* Copyright (c) 2013 Google, Inc
	*
	* SPDX-License-Identifier: GPL-2.0+
	*/

	#include <common.h>
	#include <errno.h>
	#include <dm.h>
	#include <fdtdec.h>
	#include <malloc.h>
	#include <dm/device-internal.h>
	#include <dm/root.h>
	#include <dm/ut.h>
	#include <dm/util.h>
	#include <dm/test.h>
	#include <dm/uclass-internal.h>

	DECLARE_GLOBAL_DATA_PTR;

	enum {
	TEST_INTVAL1 = 0,
	TEST_INTVAL2 = 3,
	TEST_INTVAL3 = 6,
	TEST_INTVAL_MANUAL = 101112,
	};

	static const struct dm_test_pdata test_pdata[] = {
	{ .ping_add = TEST_INTVAL1, },
	{ .ping_add = TEST_INTVAL2, },
	{ .ping_add = TEST_INTVAL3, },
	};

	static const struct dm_test_pdata test_pdata_manual = {
	.ping_add = TEST_INTVAL_MANUAL,
	};

	U_BOOT_DEVICE(dm_test_info1) = {
	.name = "test_drv",
	.platdata = &test_pdata[0],
	};

	U_BOOT_DEVICE(dm_test_info2) = {
	.name = "test_drv",
	.platdata = &test_pdata[1],
	};

	U_BOOT_DEVICE(dm_test_info3) = {
	.name = "test_drv",
	.platdata = &test_pdata[2],
	};

	static struct driver_info driver_info_manual = {
	.name = "test_manual_drv",
	.platdata = &test_pdata_manual,
	};

	/* Test that binding with platdata occurs correctly */
	static int dm_test_autobind(struct dm_test_state *dms)
	{
	struct device *dev;

	/*
	* We should have a single class (UCLASS_ROOT) and a single root
	* device with no children.
	*/
	ut_assert(dms->root);
	ut_asserteq(1, list_count_items(&gd->uclass_root));
	ut_asserteq(0, list_count_items(&gd->dm_root->child_head));
	ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_POST_BIND]);

	ut_assertok(dm_scan_platdata());

	/* We should have our test class now at least, plus more children */
	ut_assert(1 < list_count_items(&gd->uclass_root));
	ut_assert(0 < list_count_items(&gd->dm_root->child_head));

	/* Our 3 dm_test_infox children should be bound to the test uclass */
	ut_asserteq(3, dm_testdrv_op_count[DM_TEST_OP_POST_BIND]);

	/* No devices should be probed */
	list_for_each_entry(dev, &gd->dm_root->child_head, sibling_node)
	ut_assert(!(dev->flags & DM_FLAG_ACTIVATED));

	/* Our test driver should have been bound 3 times */
	ut_assert(dm_testdrv_op_count[DM_TEST_OP_BIND] == 3);

	return 0;
	}
	DM_TEST(dm_test_autobind, 0);

	/* Test that autoprobe finds all the expected devices */
	static int dm_test_autoprobe(struct dm_test_state *dms)
	{
	int expected_base_add;
	struct device *dev;
	struct uclass *uc;
	int i;

	ut_assertok(uclass_get(UCLASS_TEST, &uc));
	ut_assert(uc);

	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_INIT]);
	ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_POST_PROBE]);

	/* The root device should not be activated until needed */
	ut_assert(!(dms->root->flags & DM_FLAG_ACTIVATED));

	/*
	* We should be able to find the three test devices, and they should
	* all be activated as they are used (lazy activation, required by
	* U-Boot)
	*/
	for (i = 0; i < 3; i++) {
	ut_assertok(uclass_find_device(UCLASS_TEST, i, &dev));
	ut_assert(dev);
	ut_assertf(!(dev->flags & DM_FLAG_ACTIVATED),
	"Driver %d/%s already activated", i, dev->name);

	/* This should activate it */
	ut_assertok(uclass_get_device(UCLASS_TEST, i, &dev));
	ut_assert(dev);
	ut_assert(dev->flags & DM_FLAG_ACTIVATED);

	/* Activating a device should activate the root device */
	if (!i)
	ut_assert(dms->root->flags & DM_FLAG_ACTIVATED);
	}

	/* Our 3 dm_test_infox children should be passed to post_probe */
	ut_asserteq(3, dm_testdrv_op_count[DM_TEST_OP_POST_PROBE]);

	/* Also we can check the per-device data */
	expected_base_add = 0;
	for (i = 0; i < 3; i++) {
	struct dm_test_uclass_perdev_priv *priv;
	struct dm_test_pdata *pdata;

	ut_assertok(uclass_find_device(UCLASS_TEST, i, &dev));
	ut_assert(dev);

	priv = dev->uclass_priv;
	ut_assert(priv);
	ut_asserteq(expected_base_add, priv->base_add);

	pdata = dev->platdata;
	expected_base_add += pdata->ping_add;
	}

	return 0;
	}
	DM_TEST(dm_test_autoprobe, DM_TESTF_SCAN_PDATA);

	/* Check that we see the correct platdata in each device */
	static int dm_test_platdata(struct dm_test_state *dms)
	{
	const struct dm_test_pdata *pdata;
	struct device *dev;
	int i;

	for (i = 0; i < 3; i++) {
	ut_assertok(uclass_find_device(UCLASS_TEST, i, &dev));
	ut_assert(dev);
	pdata = dev->platdata;
	ut_assert(pdata->ping_add == test_pdata[i].ping_add);
	}

	return 0;
	}
	DM_TEST(dm_test_platdata, DM_TESTF_SCAN_PDATA);

	/* Test that we can bind, probe, remove, unbind a driver */
	static int dm_test_lifecycle(struct dm_test_state *dms)
	{
	int op_count[DM_TEST_OP_COUNT];
	struct device dev, test_dev;
	int pingret;
	int ret;

	memcpy(op_count, dm_testdrv_op_count, sizeof(op_count));

	ut_assertok(device_bind_by_name(dms->root, &driver_info_manual,
	&dev));
	ut_assert(dev);
	ut_assert(dm_testdrv_op_count[DM_TEST_OP_BIND]
	== op_count[DM_TEST_OP_BIND] + 1);
	ut_assert(!dev->priv);

	/* Probe the device - it should fail allocating private data */
	dms->force_fail_alloc = 1;
	ret = device_probe(dev);
	ut_assert(ret == -ENOMEM);
	ut_assert(dm_testdrv_op_count[DM_TEST_OP_PROBE]
	== op_count[DM_TEST_OP_PROBE] + 1);
	ut_assert(!dev->priv);

	/* Try again without the alloc failure */
	dms->force_fail_alloc = 0;
	ut_assertok(device_probe(dev));
	ut_assert(dm_testdrv_op_count[DM_TEST_OP_PROBE]
	== op_count[DM_TEST_OP_PROBE] + 2);
	ut_assert(dev->priv);

	/* This should be device 3 in the uclass */
	ut_assertok(uclass_find_device(UCLASS_TEST, 3, &test_dev));
	ut_assert(dev == test_dev);

	/* Try ping */
	ut_assertok(test_ping(dev, 100, &pingret));
	ut_assert(pingret == 102);

	/* Now remove device 3 */
	ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_PRE_REMOVE]);
	ut_assertok(device_remove(dev));
	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_PRE_REMOVE]);

	ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_UNBIND]);
	ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_PRE_UNBIND]);
	ut_assertok(device_unbind(dev));
	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_UNBIND]);
	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_PRE_UNBIND]);

	return 0;
	}
	DM_TEST(dm_test_lifecycle, DM_TESTF_SCAN_PDATA \| DM_TESTF_PROBE_TEST);

	/* Test that we can bind/unbind and the lists update correctly */
	static int dm_test_ordering(struct dm_test_state *dms)
	{
	struct device dev, dev_penultimate, dev_last, test_dev;
	int pingret;

	ut_assertok(device_bind_by_name(dms->root, &driver_info_manual,
	&dev));
	ut_assert(dev);

	/* Bind two new devices (numbers 4 and 5) */
	ut_assertok(device_bind_by_name(dms->root, &driver_info_manual,
	&dev_penultimate));
	ut_assert(dev_penultimate);
	ut_assertok(device_bind_by_name(dms->root, &driver_info_manual,
	&dev_last));
	ut_assert(dev_last);

	/* Now remove device 3 */
	ut_assertok(device_remove(dev));
	ut_assertok(device_unbind(dev));

	/* The device numbering should have shifted down one */
	ut_assertok(uclass_find_device(UCLASS_TEST, 3, &test_dev));
	ut_assert(dev_penultimate == test_dev);
	ut_assertok(uclass_find_device(UCLASS_TEST, 4, &test_dev));
	ut_assert(dev_last == test_dev);

	/* Add back the original device 3, now in position 5 */
	ut_assertok(device_bind_by_name(dms->root, &driver_info_manual, &dev));
	ut_assert(dev);

	/* Try ping */
	ut_assertok(test_ping(dev, 100, &pingret));
	ut_assert(pingret == 102);

	/* Remove 3 and 4 */
	ut_assertok(device_remove(dev_penultimate));
	ut_assertok(device_unbind(dev_penultimate));
	ut_assertok(device_remove(dev_last));
	ut_assertok(device_unbind(dev_last));

	/* Our device should now be in position 3 */
	ut_assertok(uclass_find_device(UCLASS_TEST, 3, &test_dev));
	ut_assert(dev == test_dev);

	/* Now remove device 3 */
	ut_assertok(device_remove(dev));
	ut_assertok(device_unbind(dev));

	return 0;
	}
	DM_TEST(dm_test_ordering, DM_TESTF_SCAN_PDATA);

	/* Check that we can perform operations on a device (do a ping) */
	int dm_check_operations(struct dm_test_state dms, struct device dev,
	uint32_t base, struct dm_test_priv *priv)
	{
	int expected;
	int pingret;

	/* Getting the child device should allocate platdata / priv */
	ut_assertok(testfdt_ping(dev, 10, &pingret));
	ut_assert(dev->priv);
	ut_assert(dev->platdata);

	expected = 10 + base;
	ut_asserteq(expected, pingret);

	/* Do another ping */
	ut_assertok(testfdt_ping(dev, 20, &pingret));
	expected = 20 + base;
	ut_asserteq(expected, pingret);

	/* Now check the ping_total */
	priv = dev->priv;
	ut_asserteq(DM_TEST_START_TOTAL + 10 + 20 + base * 2,
	priv->ping_total);

	return 0;
	}

	/* Check that we can perform operations on devices */
	static int dm_test_operations(struct dm_test_state *dms)
	{
	struct device *dev;
	int i;

	/*
	* Now check that the ping adds are what we expect. This is using the
	* ping-add property in each node.
	*/
	for (i = 0; i < ARRAY_SIZE(test_pdata); i++) {
	uint32_t base;

	ut_assertok(uclass_get_device(UCLASS_TEST, i, &dev));

	/*
	* Get the 'reg' property, which tells us what the ping add
	* should be. We don't use the platdata because we want
	* to test the code that sets that up (testfdt_drv_probe()).
	*/
	base = test_pdata[i].ping_add;
	debug("dev=%d, base=%d\n", i, base);

	ut_assert(!dm_check_operations(dms, dev, base, dev->priv));
	}

	return 0;
	}
	DM_TEST(dm_test_operations, DM_TESTF_SCAN_PDATA);

	/* Remove all drivers and check that things work */
	static int dm_test_remove(struct dm_test_state *dms)
	{
	struct device *dev;
	int i;

	for (i = 0; i < 3; i++) {
	ut_assertok(uclass_find_device(UCLASS_TEST, i, &dev));
	ut_assert(dev);
	ut_assertf(dev->flags & DM_FLAG_ACTIVATED,
	"Driver %d/%s not activated", i, dev->name);
	ut_assertok(device_remove(dev));
	ut_assertf(!(dev->flags & DM_FLAG_ACTIVATED),
	"Driver %d/%s should have deactivated", i,
	dev->name);
	ut_assert(!dev->priv);
	}

	return 0;
	}
	DM_TEST(dm_test_remove, DM_TESTF_SCAN_PDATA \| DM_TESTF_PROBE_TEST);

	/* Remove and recreate everything, check for memory leaks */
	static int dm_test_leak(struct dm_test_state *dms)
	{
	int i;

	for (i = 0; i < 2; i++) {
	struct mallinfo start, end;
	struct device *dev;
	int ret;
	int id;

	start = mallinfo();
	if (!start.uordblks)
	puts("Warning: Please add '#define DEBUG' to the top of common/dlmalloc.c\n");

	ut_assertok(dm_scan_platdata());
	ut_assertok(dm_scan_fdt(gd->fdt_blob));

	/* Scanning the uclass is enough to probe all the devices */
	for (id = UCLASS_ROOT; id < UCLASS_COUNT; id++) {
	for (ret = uclass_first_device(UCLASS_TEST, &dev);
	dev;
	ret = uclass_next_device(&dev))
	;
	ut_assertok(ret);
	}

	/* Don't delete the root class, since we started with that */
	for (id = UCLASS_ROOT + 1; id < UCLASS_COUNT; id++) {
	struct uclass *uc;

	uc = uclass_find(id);
	if (!uc)
	continue;
	ut_assertok(uclass_destroy(uc));
	}

	end = mallinfo();
	ut_asserteq(start.uordblks, end.uordblks);
	}

	return 0;
	}
	DM_TEST(dm_test_leak, 0);

	/* Test uclass init/destroy methods */
	static int dm_test_uclass(struct dm_test_state *dms)
	{
	struct uclass *uc;

	ut_assertok(uclass_get(UCLASS_TEST, &uc));
	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_INIT]);
	ut_asserteq(0, dm_testdrv_op_count[DM_TEST_OP_DESTROY]);
	ut_assert(uc->priv);

	ut_assertok(uclass_destroy(uc));
	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_INIT]);
	ut_asserteq(1, dm_testdrv_op_count[DM_TEST_OP_DESTROY]);

	return 0;
	}
	DM_TEST(dm_test_uclass, 0);

	/**
	* create_children() - Create children of a parent node
	*
	* @dms: Test system state
	* @parent: Parent device
	* @count: Number of children to create
	* @key: Key value to put in first child. Subsequence children
	* receive an incrementing value
	* @child: If not NULL, then the child device pointers are written into
	* this array.
	* @return 0 if OK, -ve on error
	*/
	static int create_children(struct dm_test_state dms, struct device parent,
	int count, int key, struct device *child[])
	{
	struct device *dev;
	int i;

	for (i = 0; i < count; i++) {
	struct dm_test_pdata *pdata;

	ut_assertok(device_bind_by_name(parent, &driver_info_manual,
	&dev));
	pdata = calloc(1, sizeof(*pdata));
	pdata->ping_add = key + i;
	dev->platdata = pdata;
	if (child)
	child[i] = dev;
	}

	return 0;
	}

	#define NODE_COUNT 10

	static int dm_test_children(struct dm_test_state *dms)
	{
	struct device *top[NODE_COUNT];
	struct device *child[NODE_COUNT];
	struct device *grandchild[NODE_COUNT];
	struct device *dev;
	int total;
	int ret;
	int i;

	/* We don't care about the numbering for this test */
	dms->skip_post_probe = 1;

	ut_assert(NODE_COUNT > 5);

	/* First create 10 top-level children */
	ut_assertok(create_children(dms, dms->root, NODE_COUNT, 0, top));

	/* Now a few have their own children */
	ut_assertok(create_children(dms, top[2], NODE_COUNT, 2, NULL));
	ut_assertok(create_children(dms, top[5], NODE_COUNT, 5, child));

	/* And grandchildren */
	for (i = 0; i < NODE_COUNT; i++)
	ut_assertok(create_children(dms, child[i], NODE_COUNT, 50 * i,
	i == 2 ? grandchild : NULL));

	/* Check total number of devices */
	total = NODE_COUNT * (3 + NODE_COUNT);
	ut_asserteq(total, dm_testdrv_op_count[DM_TEST_OP_BIND]);

	/* Try probing one of the grandchildren */
	ut_assertok(uclass_get_device(UCLASS_TEST,
	NODE_COUNT * 3 + 2 * NODE_COUNT, &dev));
	ut_asserteq_ptr(grandchild[0], dev);

	/*
	* This should have probed the child and top node also, for a total
	* of 3 nodes.
	*/
	ut_asserteq(3, dm_testdrv_op_count[DM_TEST_OP_PROBE]);

	/* Probe the other grandchildren */
	for (i = 1; i < NODE_COUNT; i++)
	ut_assertok(device_probe(grandchild[i]));

	ut_asserteq(2 + NODE_COUNT, dm_testdrv_op_count[DM_TEST_OP_PROBE]);

	/* Probe everything */
	for (ret = uclass_first_device(UCLASS_TEST, &dev);
	dev;
	ret = uclass_next_device(&dev))
	;
	ut_assertok(ret);

	ut_asserteq(total, dm_testdrv_op_count[DM_TEST_OP_PROBE]);

	/* Remove a top-level child and check that the children are removed */
	ut_assertok(device_remove(top[2]));
	ut_asserteq(NODE_COUNT + 1, dm_testdrv_op_count[DM_TEST_OP_REMOVE]);
	dm_testdrv_op_count[DM_TEST_OP_REMOVE] = 0;

	/* Try one with grandchildren */
	ut_assertok(uclass_get_device(UCLASS_TEST, 5, &dev));
	ut_asserteq_ptr(dev, top[5]);
	ut_assertok(device_remove(dev));
	ut_asserteq(1 + NODE_COUNT * (1 + NODE_COUNT),
	dm_testdrv_op_count[DM_TEST_OP_REMOVE]);

	/* Try the same with unbind */
	ut_assertok(device_unbind(top[2]));
	ut_asserteq(NODE_COUNT + 1, dm_testdrv_op_count[DM_TEST_OP_UNBIND]);
	dm_testdrv_op_count[DM_TEST_OP_UNBIND] = 0;

	/* Try one with grandchildren */
	ut_assertok(uclass_get_device(UCLASS_TEST, 5, &dev));
	ut_asserteq_ptr(dev, top[6]);
	ut_assertok(device_unbind(top[5]));
	ut_asserteq(1 + NODE_COUNT * (1 + NODE_COUNT),
	dm_testdrv_op_count[DM_TEST_OP_UNBIND]);

	return 0;
	}
	DM_TEST(dm_test_children, 0);