test/dm/blk.c - platform/external/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2015 Google, Inc
  */

 #include <common.h>
 #include <dm.h>
 #include <part.h>
 #include <usb.h>
 #include <asm/global_data.h>
 #include <asm/state.h>
 #include <dm/test.h>
 #include <test/test.h>
 #include <test/ut.h>

 DECLARE_GLOBAL_DATA_PTR;

 /* Allow resetting the USB-started flag */
 extern char usb_started;

 /* Test that block devices can be created */
 static int dm_test_blk_base(struct unit_test_state *uts)
 {
 	struct udevice *blk1, *blk3, *dev;

 	/* Create two, one the parent of the other */
 	ut_assertok(blk_create_device(gd->dm_root, "sandbox_host_blk", "test",
 				      IF_TYPE_HOST, 1, 512, 2, &blk1));
 	ut_assertok(blk_create_device(blk1, "sandbox_host_blk", "test",
 				      IF_TYPE_HOST, 3, 512, 2, &blk3));

 	/* Check we can find them */
 	ut_asserteq(-ENODEV, blk_get_device(IF_TYPE_HOST, 0, &dev));
 	ut_assertok(blk_get_device(IF_TYPE_HOST, 1, &dev));
 	ut_asserteq_ptr(blk1, dev);
 	ut_assertok(blk_get_device(IF_TYPE_HOST, 3, &dev));
 	ut_asserteq_ptr(blk3, dev);

 	/* Check we can iterate */
 	ut_assertok(blk_first_device(IF_TYPE_HOST, &dev));
 	ut_asserteq_ptr(blk1, dev);
 	ut_assertok(blk_next_device(&dev));
 	ut_asserteq_ptr(blk3, dev);

 	return 0;
 }
 DM_TEST(dm_test_blk_base, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);

 static int count_blk_devices(void)
 {
 	struct udevice *blk;
 	struct uclass *uc;
 	int count = 0;
 	int ret;

 	ret = uclass_get(UCLASS_BLK, &uc);
 	if (ret)
 		return ret;

 	uclass_foreach_dev(blk, uc)
 		count++;

 	return count;
 }

 /* Test that block devices work correctly with USB */
 static int dm_test_blk_usb(struct unit_test_state *uts)
 {
 	struct udevice *usb_dev, *dev;
 	struct blk_desc *dev_desc;

 	usb_started = false;

 	/* Get a flash device */
 	state_set_skip_delays(true);
 	ut_assertok(usb_stop());
 	ut_assertok(usb_init());
 	ut_assertok(uclass_get_device(UCLASS_MASS_STORAGE, 0, &usb_dev));
 	ut_assertok(blk_get_device_by_str("usb", "0", &dev_desc));

 	/* The parent should be a block device */
 	ut_assertok(blk_get_device(IF_TYPE_USB, 0, &dev));
 	ut_asserteq_ptr(usb_dev, dev_get_parent(dev));

 	/* Check we have one block device for each mass storage device */
 	ut_asserteq(6, count_blk_devices());

 	/* Now go around again, making sure the old devices were unbound */
 	ut_assertok(usb_stop());
 	ut_assertok(usb_init());
 	ut_asserteq(6, count_blk_devices());
 	ut_assertok(usb_stop());

 	return 0;
 }
 DM_TEST(dm_test_blk_usb, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);

 /* Test that we can find block devices without probing them */
 static int dm_test_blk_find(struct unit_test_state *uts)
 {
 	struct udevice *blk, *dev;

 	ut_assertok(blk_create_device(gd->dm_root, "sandbox_host_blk", "test",
 				      IF_TYPE_HOST, 1, 512, 2, &blk));
 	ut_asserteq(-ENODEV, blk_find_device(IF_TYPE_HOST, 0, &dev));
 	ut_assertok(blk_find_device(IF_TYPE_HOST, 1, &dev));
 	ut_asserteq_ptr(blk, dev);
 	ut_asserteq(false, device_active(dev));

 	/* Now activate it */
 	ut_assertok(blk_get_device(IF_TYPE_HOST, 1, &dev));
 	ut_asserteq_ptr(blk, dev);
 	ut_asserteq(true, device_active(dev));

 	return 0;
 }
 DM_TEST(dm_test_blk_find, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);

 /* Test that block device numbering works as expected */
 static int dm_test_blk_devnum(struct unit_test_state *uts)
 {
 	struct udevice *dev, *mmc_dev, *parent;
 	int i;

 	/*
 	 * Probe the devices, with the first one being probed last. This is the
 	 * one with no alias / sequence numnber.
 	 */
 	ut_assertok(uclass_get_device(UCLASS_MMC, 1, &dev));
 	ut_assertok(uclass_get_device(UCLASS_MMC, 2, &dev));
 	ut_assertok(uclass_get_device(UCLASS_MMC, 0, &dev));
 	for (i = 0; i < 3; i++) {
 		struct blk_desc *desc;

 		/* Check that the bblock device is attached */
 		ut_assertok(uclass_get_device_by_seq(UCLASS_MMC, i, &mmc_dev));
 		ut_assertok(blk_find_device(IF_TYPE_MMC, i, &dev));
 		parent = dev_get_parent(dev);
 		ut_asserteq_ptr(parent, mmc_dev);
 		ut_asserteq(trailing_strtol(mmc_dev->name), i);

 		/*
 		 * Check that the block device devnum matches its parent's
 		 * sequence number
 		 */
 		desc = dev_get_uclass_plat(dev);
 		ut_asserteq(desc->devnum, i);
 	}

 	return 0;
 }
 DM_TEST(dm_test_blk_devnum, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);

 /* Test that we can get a block from its parent */
 static int dm_test_blk_get_from_parent(struct unit_test_state *uts)
 {
 	struct udevice *dev, *blk;

 	ut_assertok(uclass_get_device(UCLASS_MMC, 0, &dev));
 	ut_assertok(blk_get_from_parent(dev, &blk));

 	ut_assertok(uclass_get_device(UCLASS_I2C, 0, &dev));
 	ut_asserteq(-ENOTBLK, blk_get_from_parent(dev, &blk));

 	ut_assertok(uclass_get_device(UCLASS_GPIO, 0, &dev));
 	ut_asserteq(-ENODEV, blk_get_from_parent(dev, &blk));

 	return 0;
 }
 DM_TEST(dm_test_blk_get_from_parent, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);

 /* Test iteration through block devices */
 static int dm_test_blk_iter(struct unit_test_state *uts)
 {
 	struct udevice *dev;
 	int i;

 	/*
 	 * See sandbox test.dts - it has:
 	 *
 	 *   mmc0 - removable
 	 *   mmc1 - removable
 	 *   mmc2 - fixed
 	 */
 	ut_assertok(blk_first_device_err(BLKF_FIXED, &dev));
 	ut_asserteq_str("mmc2.blk", dev->name);
 	ut_asserteq(-ENODEV, blk_next_device_err(BLKF_FIXED, &dev));

 	ut_assertok(blk_first_device_err(BLKF_REMOVABLE, &dev));
 	ut_asserteq_str("mmc1.blk", dev->name);
 	ut_assertok(blk_next_device_err(BLKF_REMOVABLE, &dev));
 	ut_asserteq_str("mmc0.blk", dev->name);
 	ut_asserteq(-ENODEV, blk_next_device_err(BLKF_REMOVABLE, &dev));

 	ut_assertok(blk_first_device_err(BLKF_BOTH, &dev));
 	ut_asserteq_str("mmc2.blk", dev->name);
 	ut_assertok(blk_next_device_err(BLKF_BOTH, &dev));
 	ut_asserteq_str("mmc1.blk", dev->name);
 	ut_assertok(blk_next_device_err(BLKF_BOTH, &dev));
 	ut_asserteq_str("mmc0.blk", dev->name);
 	ut_asserteq(-ENODEV, blk_next_device_err(BLKF_FIXED, &dev));

 	ut_asserteq(1, blk_count_devices(BLKF_FIXED));
 	ut_asserteq(2, blk_count_devices(BLKF_REMOVABLE));
 	ut_asserteq(3, blk_count_devices(BLKF_BOTH));

 	i = 0;
 	blk_foreach_probe(BLKF_FIXED, dev)
 		ut_asserteq_str((i++, "mmc2.blk"), dev->name);
 	ut_asserteq(1, i);

 	i = 0;
 	blk_foreach_probe(BLKF_REMOVABLE, dev)
 		ut_asserteq_str(i++ ? "mmc0.blk" : "mmc1.blk", dev->name);
 	ut_asserteq(2, i);

 	i = 0;
 	blk_foreach_probe(BLKF_BOTH, dev)
 		ut_asserteq_str((++i == 1 ? "mmc2.blk" : i == 2 ?
 			"mmc1.blk" : "mmc0.blk"), dev->name);
 	ut_asserteq(3, i);

 	return 0;
 }
 DM_TEST(dm_test_blk_iter, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);

 /* Test finding fixed/removable block devices */
 static int dm_test_blk_flags(struct unit_test_state *uts)
 {
 	struct udevice *dev;

 	/* Iterate through devices without probing them */
 	ut_assertok(blk_find_first(BLKF_BOTH, &dev));
 	ut_assertnonnull(dev);
 	ut_asserteq_str("mmc2.blk", dev->name);

 	ut_assertok(blk_find_next(BLKF_BOTH, &dev));
 	ut_assertnonnull(dev);
 	ut_asserteq_str("mmc1.blk", dev->name);

 	ut_assertok(blk_find_next(BLKF_BOTH, &dev));
 	ut_assertnonnull(dev);
 	ut_asserteq_str("mmc0.blk", dev->name);

 	ut_asserteq(-ENODEV, blk_find_next(BLKF_BOTH, &dev));
 	ut_assertnull(dev);

 	/* All devices are removable until probed */
 	ut_asserteq(-ENODEV, blk_find_first(BLKF_FIXED, &dev));

 	ut_assertok(blk_find_first(BLKF_REMOVABLE, &dev));
 	ut_assertnonnull(dev);
 	ut_asserteq_str("mmc2.blk", dev->name);

 	/* Now probe them and iterate again */
 	ut_assertok(blk_first_device_err(BLKF_BOTH, &dev));
 	ut_assertnonnull(dev);
 	ut_asserteq_str("mmc2.blk", dev->name);

 	ut_assertok(blk_next_device_err(BLKF_BOTH, &dev));
 	ut_assertnonnull(dev);
 	ut_asserteq_str("mmc1.blk", dev->name);

 	ut_assertok(blk_next_device_err(BLKF_BOTH, &dev));
 	ut_assertnonnull(dev);
 	ut_asserteq_str("mmc0.blk", dev->name);

 	ut_asserteq(-ENODEV, blk_next_device_err(BLKF_BOTH, &dev));

 	/* Look only for fixed devices */
 	ut_assertok(blk_first_device_err(BLKF_FIXED, &dev));
 	ut_assertnonnull(dev);
 	ut_asserteq_str("mmc2.blk", dev->name);

 	ut_asserteq(-ENODEV, blk_next_device_err(BLKF_FIXED, &dev));

 	/* Look only for removable devices */
 	ut_assertok(blk_first_device_err(BLKF_REMOVABLE, &dev));
 	ut_assertnonnull(dev);
 	ut_asserteq_str("mmc1.blk", dev->name);

 	ut_assertok(blk_next_device_err(BLKF_REMOVABLE, &dev));
 	ut_assertnonnull(dev);
 	ut_asserteq_str("mmc0.blk", dev->name);

 	ut_asserteq(-ENODEV, blk_next_device_err(BLKF_REMOVABLE, &dev));

 	return 0;
 }
 DM_TEST(dm_test_blk_flags, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);

 /* Test blk_foreach() and friend */
 static int dm_test_blk_foreach(struct unit_test_state *uts)
 {
 	struct udevice *dev;
 	int found;

 	/* Test blk_foreach() - use the 3rd bytes of the name (0/1/2) */
 	found = 0;
 	blk_foreach(BLKF_BOTH, dev)
 		found |= 1 << dectoul(&dev->name[3], NULL);
 	ut_asserteq(7, found);

 	/* All devices are removable until probed */
 	found = 0;
 	blk_foreach(BLKF_FIXED, dev)
 		found |= 1 << dectoul(&dev->name[3], NULL);
 	ut_asserteq(0, found);

 	found = 0;
 	blk_foreach(BLKF_REMOVABLE, dev)
 		found |= 1 << dectoul(&dev->name[3], NULL);
 	ut_asserteq(7, found);

 	/* Now try again with the probing functions */
 	found = 0;
 	blk_foreach_probe(BLKF_BOTH, dev)
 		found |= 1 << dectoul(&dev->name[3], NULL);
 	ut_asserteq(7, found);
 	ut_asserteq(3, blk_count_devices(BLKF_BOTH));

 	found = 0;
 	blk_foreach_probe(BLKF_FIXED, dev)
 		found |= 1 << dectoul(&dev->name[3], NULL);
 	ut_asserteq(4, found);
 	ut_asserteq(1, blk_count_devices(BLKF_FIXED));

 	found = 0;
 	blk_foreach_probe(BLKF_REMOVABLE, dev)
 		found |= 1 << dectoul(&dev->name[3], NULL);
 	ut_asserteq(3, found);
 	ut_asserteq(2, blk_count_devices(BLKF_REMOVABLE));

 	return 0;
 }
 DM_TEST(dm_test_blk_foreach, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* Copyright (C) 2015 Google, Inc
	*/

	#include <common.h>
	#include <dm.h>
	#include <part.h>
	#include <usb.h>
	#include <asm/global_data.h>
	#include <asm/state.h>
	#include <dm/test.h>
	#include <test/test.h>
	#include <test/ut.h>

	DECLARE_GLOBAL_DATA_PTR;

	/* Allow resetting the USB-started flag */
	extern char usb_started;

	/* Test that block devices can be created */
	static int dm_test_blk_base(struct unit_test_state *uts)
	{
	struct udevice blk1, blk3, *dev;

	/* Create two, one the parent of the other */
	ut_assertok(blk_create_device(gd->dm_root, "sandbox_host_blk", "test",
	IF_TYPE_HOST, 1, 512, 2, &blk1));
	ut_assertok(blk_create_device(blk1, "sandbox_host_blk", "test",
	IF_TYPE_HOST, 3, 512, 2, &blk3));

	/* Check we can find them */
	ut_asserteq(-ENODEV, blk_get_device(IF_TYPE_HOST, 0, &dev));
	ut_assertok(blk_get_device(IF_TYPE_HOST, 1, &dev));
	ut_asserteq_ptr(blk1, dev);
	ut_assertok(blk_get_device(IF_TYPE_HOST, 3, &dev));
	ut_asserteq_ptr(blk3, dev);

	/* Check we can iterate */
	ut_assertok(blk_first_device(IF_TYPE_HOST, &dev));
	ut_asserteq_ptr(blk1, dev);
	ut_assertok(blk_next_device(&dev));
	ut_asserteq_ptr(blk3, dev);

	return 0;
	}
	DM_TEST(dm_test_blk_base, UT_TESTF_SCAN_PDATA \| UT_TESTF_SCAN_FDT);

	static int count_blk_devices(void)
	{
	struct udevice *blk;
	struct uclass *uc;
	int count = 0;
	int ret;

	ret = uclass_get(UCLASS_BLK, &uc);
	if (ret)
	return ret;

	uclass_foreach_dev(blk, uc)
	count++;

	return count;
	}

	/* Test that block devices work correctly with USB */
	static int dm_test_blk_usb(struct unit_test_state *uts)
	{
	struct udevice usb_dev, dev;
	struct blk_desc *dev_desc;

	usb_started = false;

	/* Get a flash device */
	state_set_skip_delays(true);
	ut_assertok(usb_stop());
	ut_assertok(usb_init());
	ut_assertok(uclass_get_device(UCLASS_MASS_STORAGE, 0, &usb_dev));
	ut_assertok(blk_get_device_by_str("usb", "0", &dev_desc));

	/* The parent should be a block device */
	ut_assertok(blk_get_device(IF_TYPE_USB, 0, &dev));
	ut_asserteq_ptr(usb_dev, dev_get_parent(dev));

	/* Check we have one block device for each mass storage device */
	ut_asserteq(6, count_blk_devices());

	/* Now go around again, making sure the old devices were unbound */
	ut_assertok(usb_stop());
	ut_assertok(usb_init());
	ut_asserteq(6, count_blk_devices());
	ut_assertok(usb_stop());

	return 0;
	}
	DM_TEST(dm_test_blk_usb, UT_TESTF_SCAN_PDATA \| UT_TESTF_SCAN_FDT);

	/* Test that we can find block devices without probing them */
	static int dm_test_blk_find(struct unit_test_state *uts)
	{
	struct udevice blk, dev;

	ut_assertok(blk_create_device(gd->dm_root, "sandbox_host_blk", "test",
	IF_TYPE_HOST, 1, 512, 2, &blk));
	ut_asserteq(-ENODEV, blk_find_device(IF_TYPE_HOST, 0, &dev));
	ut_assertok(blk_find_device(IF_TYPE_HOST, 1, &dev));
	ut_asserteq_ptr(blk, dev);
	ut_asserteq(false, device_active(dev));

	/* Now activate it */
	ut_assertok(blk_get_device(IF_TYPE_HOST, 1, &dev));
	ut_asserteq_ptr(blk, dev);
	ut_asserteq(true, device_active(dev));

	return 0;
	}
	DM_TEST(dm_test_blk_find, UT_TESTF_SCAN_PDATA \| UT_TESTF_SCAN_FDT);

	/* Test that block device numbering works as expected */
	static int dm_test_blk_devnum(struct unit_test_state *uts)
	{
	struct udevice dev, mmc_dev, *parent;
	int i;

	/*
	* Probe the devices, with the first one being probed last. This is the
	* one with no alias / sequence numnber.
	*/
	ut_assertok(uclass_get_device(UCLASS_MMC, 1, &dev));
	ut_assertok(uclass_get_device(UCLASS_MMC, 2, &dev));
	ut_assertok(uclass_get_device(UCLASS_MMC, 0, &dev));
	for (i = 0; i < 3; i++) {
	struct blk_desc *desc;

	/* Check that the bblock device is attached */
	ut_assertok(uclass_get_device_by_seq(UCLASS_MMC, i, &mmc_dev));
	ut_assertok(blk_find_device(IF_TYPE_MMC, i, &dev));
	parent = dev_get_parent(dev);
	ut_asserteq_ptr(parent, mmc_dev);
	ut_asserteq(trailing_strtol(mmc_dev->name), i);

	/*
	* Check that the block device devnum matches its parent's
	* sequence number
	*/
	desc = dev_get_uclass_plat(dev);
	ut_asserteq(desc->devnum, i);
	}

	return 0;
	}
	DM_TEST(dm_test_blk_devnum, UT_TESTF_SCAN_PDATA \| UT_TESTF_SCAN_FDT);

	/* Test that we can get a block from its parent */
	static int dm_test_blk_get_from_parent(struct unit_test_state *uts)
	{
	struct udevice dev, blk;

	ut_assertok(uclass_get_device(UCLASS_MMC, 0, &dev));
	ut_assertok(blk_get_from_parent(dev, &blk));

	ut_assertok(uclass_get_device(UCLASS_I2C, 0, &dev));
	ut_asserteq(-ENOTBLK, blk_get_from_parent(dev, &blk));

	ut_assertok(uclass_get_device(UCLASS_GPIO, 0, &dev));
	ut_asserteq(-ENODEV, blk_get_from_parent(dev, &blk));

	return 0;
	}
	DM_TEST(dm_test_blk_get_from_parent, UT_TESTF_SCAN_PDATA \| UT_TESTF_SCAN_FDT);

	/* Test iteration through block devices */
	static int dm_test_blk_iter(struct unit_test_state *uts)
	{
	struct udevice *dev;
	int i;

	/*
	* See sandbox test.dts - it has:
	*
	* mmc0 - removable
	* mmc1 - removable
	* mmc2 - fixed
	*/
	ut_assertok(blk_first_device_err(BLKF_FIXED, &dev));
	ut_asserteq_str("mmc2.blk", dev->name);
	ut_asserteq(-ENODEV, blk_next_device_err(BLKF_FIXED, &dev));

	ut_assertok(blk_first_device_err(BLKF_REMOVABLE, &dev));
	ut_asserteq_str("mmc1.blk", dev->name);
	ut_assertok(blk_next_device_err(BLKF_REMOVABLE, &dev));
	ut_asserteq_str("mmc0.blk", dev->name);
	ut_asserteq(-ENODEV, blk_next_device_err(BLKF_REMOVABLE, &dev));

	ut_assertok(blk_first_device_err(BLKF_BOTH, &dev));
	ut_asserteq_str("mmc2.blk", dev->name);
	ut_assertok(blk_next_device_err(BLKF_BOTH, &dev));
	ut_asserteq_str("mmc1.blk", dev->name);
	ut_assertok(blk_next_device_err(BLKF_BOTH, &dev));
	ut_asserteq_str("mmc0.blk", dev->name);
	ut_asserteq(-ENODEV, blk_next_device_err(BLKF_FIXED, &dev));

	ut_asserteq(1, blk_count_devices(BLKF_FIXED));
	ut_asserteq(2, blk_count_devices(BLKF_REMOVABLE));
	ut_asserteq(3, blk_count_devices(BLKF_BOTH));

	i = 0;
	blk_foreach_probe(BLKF_FIXED, dev)
	ut_asserteq_str((i++, "mmc2.blk"), dev->name);
	ut_asserteq(1, i);

	i = 0;
	blk_foreach_probe(BLKF_REMOVABLE, dev)
	ut_asserteq_str(i++ ? "mmc0.blk" : "mmc1.blk", dev->name);
	ut_asserteq(2, i);

	i = 0;
	blk_foreach_probe(BLKF_BOTH, dev)
	ut_asserteq_str((++i == 1 ? "mmc2.blk" : i == 2 ?
	"mmc1.blk" : "mmc0.blk"), dev->name);
	ut_asserteq(3, i);

	return 0;
	}
	DM_TEST(dm_test_blk_iter, UT_TESTF_SCAN_PDATA \| UT_TESTF_SCAN_FDT);

	/* Test finding fixed/removable block devices */
	static int dm_test_blk_flags(struct unit_test_state *uts)
	{
	struct udevice *dev;

	/* Iterate through devices without probing them */
	ut_assertok(blk_find_first(BLKF_BOTH, &dev));
	ut_assertnonnull(dev);
	ut_asserteq_str("mmc2.blk", dev->name);

	ut_assertok(blk_find_next(BLKF_BOTH, &dev));
	ut_assertnonnull(dev);
	ut_asserteq_str("mmc1.blk", dev->name);

	ut_assertok(blk_find_next(BLKF_BOTH, &dev));
	ut_assertnonnull(dev);
	ut_asserteq_str("mmc0.blk", dev->name);

	ut_asserteq(-ENODEV, blk_find_next(BLKF_BOTH, &dev));
	ut_assertnull(dev);

	/* All devices are removable until probed */
	ut_asserteq(-ENODEV, blk_find_first(BLKF_FIXED, &dev));

	ut_assertok(blk_find_first(BLKF_REMOVABLE, &dev));
	ut_assertnonnull(dev);
	ut_asserteq_str("mmc2.blk", dev->name);

	/* Now probe them and iterate again */
	ut_assertok(blk_first_device_err(BLKF_BOTH, &dev));
	ut_assertnonnull(dev);
	ut_asserteq_str("mmc2.blk", dev->name);

	ut_assertok(blk_next_device_err(BLKF_BOTH, &dev));
	ut_assertnonnull(dev);
	ut_asserteq_str("mmc1.blk", dev->name);

	ut_assertok(blk_next_device_err(BLKF_BOTH, &dev));
	ut_assertnonnull(dev);
	ut_asserteq_str("mmc0.blk", dev->name);

	ut_asserteq(-ENODEV, blk_next_device_err(BLKF_BOTH, &dev));

	/* Look only for fixed devices */
	ut_assertok(blk_first_device_err(BLKF_FIXED, &dev));
	ut_assertnonnull(dev);
	ut_asserteq_str("mmc2.blk", dev->name);

	ut_asserteq(-ENODEV, blk_next_device_err(BLKF_FIXED, &dev));

	/* Look only for removable devices */
	ut_assertok(blk_first_device_err(BLKF_REMOVABLE, &dev));
	ut_assertnonnull(dev);
	ut_asserteq_str("mmc1.blk", dev->name);

	ut_assertok(blk_next_device_err(BLKF_REMOVABLE, &dev));
	ut_assertnonnull(dev);
	ut_asserteq_str("mmc0.blk", dev->name);

	ut_asserteq(-ENODEV, blk_next_device_err(BLKF_REMOVABLE, &dev));

	return 0;
	}
	DM_TEST(dm_test_blk_flags, UT_TESTF_SCAN_PDATA \| UT_TESTF_SCAN_FDT);

	/* Test blk_foreach() and friend */
	static int dm_test_blk_foreach(struct unit_test_state *uts)
	{
	struct udevice *dev;
	int found;

	/* Test blk_foreach() - use the 3rd bytes of the name (0/1/2) */
	found = 0;
	blk_foreach(BLKF_BOTH, dev)
	found \|= 1 << dectoul(&dev->name[3], NULL);
	ut_asserteq(7, found);

	/* All devices are removable until probed */
	found = 0;
	blk_foreach(BLKF_FIXED, dev)
	found \|= 1 << dectoul(&dev->name[3], NULL);
	ut_asserteq(0, found);

	found = 0;
	blk_foreach(BLKF_REMOVABLE, dev)
	found \|= 1 << dectoul(&dev->name[3], NULL);
	ut_asserteq(7, found);

	/* Now try again with the probing functions */
	found = 0;
	blk_foreach_probe(BLKF_BOTH, dev)
	found \|= 1 << dectoul(&dev->name[3], NULL);
	ut_asserteq(7, found);
	ut_asserteq(3, blk_count_devices(BLKF_BOTH));

	found = 0;
	blk_foreach_probe(BLKF_FIXED, dev)
	found \|= 1 << dectoul(&dev->name[3], NULL);
	ut_asserteq(4, found);
	ut_asserteq(1, blk_count_devices(BLKF_FIXED));

	found = 0;
	blk_foreach_probe(BLKF_REMOVABLE, dev)
	found \|= 1 << dectoul(&dev->name[3], NULL);
	ut_asserteq(3, found);
	ut_asserteq(2, blk_count_devices(BLKF_REMOVABLE));

	return 0;
	}
	DM_TEST(dm_test_blk_foreach, UT_TESTF_SCAN_PDATA \| UT_TESTF_SCAN_FDT);