lib/s2tt/tests/s2tt_tests_base_g2.cpp

/*
 * SPDX-License-Identifier: BSD-3-Clause
 * SPDX-FileCopyrightText: Copyright TF-RMM Contributors.
 */

#include <CppUTest/CommandLineTestRunner.h>
#include <CppUTest/TestHarness.h>

extern "C" {
#include <cpuid.h>
#include <granule.h>
#include <granule_types.h>
#include <host_harness.h>
#include <host_utils.h>
#include <status.h>
#include <stdlib.h>
#include <string.h>
#include <s2tt_pvt_defs.h>
#include <s2tt_test_helpers.h>
#include <ripas.h>
#include <s2tt.h>	/* Interface to exercise */
#include <test_helpers.h>
#include <unistd.h>
#include <utils_def.h>
}

void s2tte_is_addr_lvl_aligned_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * For every valid level, generate an aligned valid PA and
	 * validate that add_is_level_aligned() returns the right
	 * result.
	 ***************************************************************/
	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test. Only
	 * enable_lpa2 field is needed for the current test.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	for (long level = s2tt_test_helpers_min_table_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_LVL; level++) {
		unsigned long pa = s2tt_test_helpers_gen_addr(level, true);

		CHECK_TRUE(s2tte_is_addr_lvl_aligned(
					(const struct s2tt_context *)&s2tt_ctx,
					pa, level));
	}
}

void s2tte_is_addr_lvl_aligned_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * Negative tests: for every valid level, generate an unaligned
	 * PA and validate that add_is_level_aligned() returns the
	 * right result.
	 ***************************************************************/
	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test. Only
	 * enable_lpa2 field is needed for the current test.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	for (long level = s2tt_test_helpers_min_table_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_LVL; level++) {
		unsigned long pa = s2tt_test_helpers_gen_addr(level, true);

		pa += test_helpers_get_rand_in_range(1UL, (unsigned long)GRANULE_SIZE - 1UL);

		CHECK_TRUE(s2tte_is_addr_lvl_aligned(
					(const struct s2tt_context *)&s2tt_ctx,
					pa, level) == false);
	}
}

void s2tte_is_addr_lvl_aligned_tc3(void)
{
	/***************************************************************
	 * TEST CASE 3:
	 *
	 * Given a valid PA, call s2tte_is_addr_lvl_aligned() with a level
	 * above the maximum permitted one.
	 ***************************************************************/

	long level = S2TT_TEST_HELPERS_MAX_LVL + 1L;
	unsigned long pa = 0UL; /* Aligned to any level */
	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test. Only
	 * enable_lpa2 field is needed for the current test.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	test_helpers_expect_assert_fail(true);
	(void)s2tte_is_addr_lvl_aligned((const struct s2tt_context *)&s2tt_ctx,
				    pa, level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tte_is_addr_lvl_aligned_tc4(void)
{
	/***************************************************************
	 * TEST CASE 4:
	 *
	 * Given a valid PA, call s2tte_is_addr_lvl_aligned() with a level
	 * below the minimum permitted one.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_table_lvl() - 1L;
	unsigned long pa = 0UL; /* Aligned to any level */
	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test. Only
	 * enable_lpa2 field is needed for the current test.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	test_helpers_expect_assert_fail(true);
	(void)s2tte_is_addr_lvl_aligned((const struct s2tt_context *)&s2tt_ctx,
				    pa, level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tte_is_addr_lvl_aligned_tc5(void)
{
	/***************************************************************
	 * TEST CASE 5:
	 *
	 * Test s2tte_is_addr_lvl_aligned() with a NULL
	 * s2tt_context pointer.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_table_lvl();
	unsigned long pa = 0UL; /* Aligned to any level */

	test_helpers_expect_assert_fail(true);
	(void)s2tte_is_addr_lvl_aligned((const struct s2tt_context *)NULL,
				    pa, level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tte_map_size_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * For each valid level, invoke s2tte_map_size() and validate
	 * its output.
	 ***************************************************************/

	for (long level = s2tt_test_helpers_min_table_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_LVL; level++) {
		unsigned long expected_size =
			s2tt_test_helpers_get_entry_va_space_size(level);

		UNSIGNED_LONGS_EQUAL(expected_size, s2tte_map_size(level));
	}
}

void s2tt_invalidate_page_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * Invoke s2tt_invalidate_page() with valid parameters.
	 * Note that this test can only validate the fake_host platform
	 * implementation.
	 **************************************************************/

	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	unsigned long ipa = s2tt_test_helpers_gen_addr(S2TT_TEST_HELPERS_MAX_LVL, true);

	s2tt_ctx.vmid = (unsigned int)test_helpers_get_rand_in_range(
			0UL, (1UL << VTTBR_EL2_VMID_WIDTH) - 1UL);

	s2tt_invalidate_page((const struct s2tt_context *)&s2tt_ctx, ipa);

	TEST_EXIT;
}

void s2tt_invalidate_page_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * Invoke s2tt_invalidate_page() with a valid address and a NULL
	 * s2tt_context.
	 ***************************************************************/

	test_helpers_expect_assert_fail(true);
	s2tt_invalidate_page(NULL, 0UL);
	test_helpers_fail_if_no_assert_failed();

}

void s2tt_invalidate_block_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * Invoke s2tt_invalidate_block() with valid parameters.
	 * Note that this test can only validate the fake_host platform
	 * implementation.
	 ***************************************************************/

	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	unsigned long ipa;

	for (unsigned int level = S2TT_MIN_BLOCK_LEVEL;
	     level < S2TT_PAGE_LEVEL; level++) {
		ipa = s2tt_test_helpers_gen_addr(level, true);

		s2tt_ctx.vmid = (unsigned int)test_helpers_get_rand_in_range(
				 2UL, (1UL << VTTBR_EL2_VMID_WIDTH) - 1UL);

		s2tt_invalidate_block((const struct s2tt_context *)&s2tt_ctx, ipa);
	}

	TEST_EXIT;
}

void s2tt_invalidate_block_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * Invoke s2tt_invalidate_block() with a valid address and a NULL
	 * s2tt_context.
	 ***************************************************************/

	test_helpers_expect_assert_fail(true);
	s2tt_invalidate_block(NULL, 0UL);
	test_helpers_fail_if_no_assert_failed();

}

void s2tt_invalidate_pages_in_block_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * Invoke s2tt_invalidate_pages_in_block() with valid parameters.
	 * Note that this test can only validate the fake_host platform
	 * implementation.
	 ***************************************************************/

	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	unsigned long ipa = s2tt_test_helpers_gen_addr(S2TT_TEST_HELPERS_MAX_LVL, true);

	s2tt_ctx.vmid = (unsigned int)test_helpers_get_rand_in_range(
			2UL, (1UL << VTTBR_EL2_VMID_WIDTH) - 1UL);

	s2tt_invalidate_pages_in_block((const struct s2tt_context *)&s2tt_ctx, ipa);

	TEST_EXIT;
}

void s2tt_invalidate_pages_in_block_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * Invoke s2tt_invalidate_pages_in_block() with a valid address
	 * and a NULL s2tt_context.
	 ***************************************************************/

	test_helpers_expect_assert_fail(true);
	s2tt_invalidate_pages_in_block(NULL, 0UL);
	test_helpers_fail_if_no_assert_failed();

}

void s2tt_is_unassigned_empty_block_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * Create an unassigned empty block and validate that
	 * s2tt_is_unassigned_empty_block() returns the expected
	 * value
	 ***************************************************************/

	unsigned long s2tt[S2TTES_PER_S2TT];

	s2tt_init_unassigned_empty((const struct s2tt_context *)NULL, &s2tt[0]);

	CHECK_TRUE(s2tt_is_unassigned_empty_block(
				(const struct s2tt_context *)NULL, &s2tt[0U]));
}

typedef void(*init_unassigned_cb)(const struct s2tt_context *s2tt_ctx,
				  unsigned long *s2tt);
typedef bool(*s2tt_is_unassigned_x_block_cb)(const struct s2tt_context *s2tt_ctx,
					     unsigned long *s2tt);
/* Use as array index for unassigned NS test case */
#define S2TTE_INVALID_NS_INDEX		(3U)

/*
 * Helper to implement a set of negative tests for
 * s2tte_is_unassigned_{x}_block() APIS where x belongs to
 * [RMI_EMPTY, RMI_RAM, RMI_DESTROYED, NS]:
 *
 *	- Validate s2tt_is_unassigned_{x}_block() with a corresponding
 *	  unassigned block in which a random TTE is of a different
 *	  unassigned type.
 *	- Validate s2tt_is_unassigned_{x}_block() with an
 *	  unassigned matching block in which a random TTE is of
 *	  a different unassigned type.
 */
static void test_is_unassigned_x_block(unsigned int type)
{
	unsigned long ripas_arr[] = {S2TTE_INVALID_RIPAS_EMPTY,
				     S2TTE_INVALID_RIPAS_RAM,
				     S2TTE_INVALID_RIPAS_DESTROYED,
				     S2TTE_NS};
	init_unassigned_cb init_unassigned_cbs[] = {
		s2tt_init_unassigned_empty,
		s2tt_init_unassigned_ram,
		s2tt_init_unassigned_destroyed,
		s2tt_init_unassigned_ns
	};
	s2tt_is_unassigned_x_block_cb s2tt_is_unassigned_x_block_cbs[] = {
		s2tt_is_unassigned_empty_block,
		s2tt_is_unassigned_ram_block,
		s2tt_is_unassigned_destroyed_block,
		s2tt_is_unassigned_ns_block,
	};
	long level = test_helpers_get_rand_in_range(
			s2tt_test_helpers_min_block_lvl(),
			S2TT_TEST_HELPERS_MAX_LVL);
	unsigned long pa = s2tt_test_helpers_gen_addr(level, true);
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned int tte_idx = (unsigned int)test_helpers_get_rand_in_range(0UL,
					     S2TTES_PER_S2TT - 1UL);
	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	unsigned int idx;

	assert(type <= S2TTE_INVALID_NS_INDEX);

	/*
	 * pick a random type of unassigned S2TTE to test with other than
	 * the type passed.
	 */
	do {
		idx = (unsigned int)test_helpers_get_rand_in_range(
					0UL, ARRAY_SIZE(ripas_arr) - 1UL);
	} while (idx == type);

	/*
	 * Initialize an s2tt_context structure for the test.
	 * Only 'enable_lpa2' is used by the API, so the rest of fields
	 * can be left untouched.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Initialize a translation table with the required unassigned type */
	init_unassigned_cbs[type](
				(const struct s2tt_context *)&s2tt_ctx, &s2tt[0]);

	/*
	 * Modify the random entry on the S2TT with a different
	 * unassigned S2TTE
	 */
	s2tt[tte_idx] = s2tt_test_create_unassigned(
				(const struct s2tt_context *)&s2tt_ctx,
				ripas_arr[idx]);
	CHECK_FALSE(s2tt_is_unassigned_x_block_cbs[type](
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U]));

	/* pickup a random type of assigned S2TTE to test with */
	idx = (unsigned int)test_helpers_get_rand_in_range(
					0UL, ARRAY_SIZE(ripas_arr) - 1UL);

	/* Modify the random entry on the S2TT with an assigned S2TTE */
	s2tt[tte_idx] = s2tt_test_create_assigned(
			(const struct s2tt_context *)&s2tt_ctx,
			pa, level, ripas_arr[idx]);
	CHECK_FALSE(s2tt_is_unassigned_x_block_cbs[type](
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U]));
}

void s2tt_is_unassigned_empty_block_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * Set of negative tests:
	 *	- Validate s2tt_is_unassigned_empty_block() with an
	 *	  unassigned empty block in which a random TTE is of
	 *	  a different unassigned type.
	 *	- Validate s2tt_is_unassigned_empty_block() with an
	 *	  unassigned empty block in which a random TTE is of
	 *	  a different assigned type.
	 ***************************************************************/

	test_is_unassigned_x_block(RMI_EMPTY);
}

void s2tt_is_unassigned_empty_block_tc3(void)
{
	/***************************************************************
	 * TEST CASE 3:
	 *
	 * Invoke s2tt_is_unassigned_empty_block() with a NULL table.
	 ***************************************************************/

	test_helpers_expect_assert_fail(true);
	(void)s2tt_is_unassigned_empty_block(
			(const struct s2tt_context *)NULL, NULL);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_is_unassigned_ram_block_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * Create an unassigned ram block and validate that
	 * s2tt_is_unassigned_ram_block() returns the expected value
	 ***************************************************************/

	unsigned long s2tt[S2TTES_PER_S2TT];

	s2tt_init_unassigned_ram((const struct s2tt_context *)NULL, &s2tt[0]);

	CHECK_TRUE(s2tt_is_unassigned_ram_block(
				(const struct s2tt_context *)NULL, &s2tt[0U]));
}

void s2tt_is_unassigned_ram_block_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * Set of negative tests:
	 *	- Validate s2tt_is_unassigned_ram_block() with an
	 *	  unassigned ram block in which a random TTE is of
	 *	  a different unassigned type.
	 *	- Validate s2tt_is_unassigned_ram_block() with an
	 *	  unassigned ram block in which a random TTE is of
	 *	  a different assigned type.
	 ***************************************************************/

	test_is_unassigned_x_block(RMI_RAM);
}

void s2tt_is_unassigned_ram_block_tc3(void)
{
	/***************************************************************
	 * TEST CASE 3:
	 *
	 * Invoke s2tt_is_unassigned_ram_block() with a NULL table.
	 ***************************************************************/

	test_helpers_expect_assert_fail(true);
	(void)s2tt_is_unassigned_ram_block(
			(const struct s2tt_context *)NULL, NULL);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_is_unassigned_ns_block_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * Create an unassigned ns block and validate that
	 * s2tt_is_unassigned_ns_block() returns the expected value
	 ***************************************************************/

	unsigned long s2tt[S2TTES_PER_S2TT];

	s2tt_init_unassigned_ns((const struct s2tt_context *)NULL, &s2tt[0]);

	CHECK_TRUE(s2tt_is_unassigned_ns_block((const struct s2tt_context *)NULL,
						&s2tt[0U]));
}

void s2tt_is_unassigned_ns_block_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * Set of negative tests:
	 *	- Validate s2tt_is_unassigned_ns_block() with an
	 *	  unassigned ns block in which a random TTE is of
	 *	  a different unassigned type.
	 *	- Validate s2tt_is_unassigned_ns_block() with an
	 *	  unassigned ns block in which a random TTE is of
	 *	  a different assigned type.
	 ***************************************************************/

	test_is_unassigned_x_block(S2TTE_INVALID_NS_INDEX);
}

void s2tt_is_unassigned_ns_block_tc3(void)
{
	/***************************************************************
	 * TEST CASE 3:
	 *
	 * Invoke s2tt_is_unassigned_ns_block() with a NULL table.
	 ***************************************************************/

	test_helpers_expect_assert_fail(true);
	(void)s2tt_is_unassigned_ns_block((const struct s2tt_context *)NULL, NULL);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_is_unassigned_destroyed_block_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * Create an unassigned destroyed block and validate that
	 * s2tt_is_unassigned_destroyed_block() returns the
	 * expected value
	 ***************************************************************/

	unsigned long s2tt[S2TTES_PER_S2TT];

	s2tt_init_unassigned_destroyed((const struct s2tt_context *)NULL, &s2tt[0]);

	CHECK_TRUE(s2tt_is_unassigned_destroyed_block(
				(const struct s2tt_context *)NULL, &s2tt[0U]));
}

void s2tt_is_unassigned_destroyed_block_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * Set of negative tests:
	 *	- Validate s2tt_is_unassigned_destroyed_block() with
	 *	  an unassigned ns block in which a random TTE is of
	 *	  a different unassigned type.
	 *	- Validate s2tt_is_unassigned_destroyed_block() with
	 *	  an unassigned ns block in which a random TTE is of
	 *	  a different assigned type.
	 ***************************************************************/

	test_is_unassigned_x_block(RMI_DESTROYED);
}

void s2tt_is_unassigned_destroyed_block_tc3(void)
{
	/***************************************************************
	 * TEST CASE 3:
	 *
	 * Invoke s2tt_is_unassigned_destroyed_block() with a NULL table.
	 ***************************************************************/

	test_helpers_expect_assert_fail(true);
	(void)s2tt_is_unassigned_destroyed_block(
				(const struct s2tt_context *)NULL, NULL);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_empty_block_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * For each valid level, create an assigned empty block and
	 * validate that s2tt_maps_assigned_empty_block() returns
	 * the expected value
	 ***************************************************************/

	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	for (long level = s2tt_test_helpers_min_block_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_TABLE_LVL; level++) {

		unsigned long s2tt[S2TTES_PER_S2TT];
		unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);

		/* Generate the table */
		s2tt_init_assigned_empty((const struct s2tt_context *)&s2tt_ctx,
					 &s2tt[0U], pa, level);

		CHECK_TRUE(s2tt_maps_assigned_empty_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));
	}
}

void s2tt_maps_assigned_empty_block_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * For each valid level, create an assigned empty block and
	 * then change a random TTE to a different type to validate
	 * that s2tt_maps_assigned_empty_block() returns the expected
	 * value
	 ***************************************************************/

	unsigned long unassigned_ripas[] = {S2TTE_INVALID_RIPAS_EMPTY,
					    S2TTE_INVALID_RIPAS_RAM,
					    S2TTE_NS,
					    S2TTE_INVALID_RIPAS_DESTROYED};
	unsigned long assigned_ripas[] = {S2TTE_INVALID_RIPAS_RAM,
					  S2TTE_NS,
					  S2TTE_INVALID_RIPAS_DESTROYED};
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	for (long level = s2tt_test_helpers_min_block_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_TABLE_LVL; level++) {

		unsigned int tte_idx =
			(unsigned int)test_helpers_get_rand_in_range(0UL,
					     S2TTES_PER_S2TT - 1UL);
		/* pickup a random type of unassigned S2TTE to test with */
		unsigned int idx =
			(unsigned int)test_helpers_get_rand_in_range(0UL,
					ARRAY_SIZE(unassigned_ripas) - 1UL);
		unsigned long s2tt[S2TTES_PER_S2TT];
		unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);

		/* Generate the table */
		s2tt_init_assigned_empty((const struct s2tt_context *)&s2tt_ctx,
					 &s2tt[0U], pa, level);

		/* Alter a random S2TTE on the table */
		s2tt[tte_idx] = s2tt_test_create_unassigned(
					(const struct s2tt_context *)&s2tt_ctx,
					unassigned_ripas[idx]);
		CHECK_FALSE(s2tt_maps_assigned_empty_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));

		/* pickup a random type of assigned S2TTE to test with */
		idx = (unsigned int)test_helpers_get_rand_in_range(0UL,
					ARRAY_SIZE(assigned_ripas) - 1UL);

		/* Alter a random S2TTE on the table */
		s2tt[tte_idx] = s2tt_test_create_assigned(
				(const struct s2tt_context *)&s2tt_ctx, pa, level,
				assigned_ripas[idx]);
		CHECK_FALSE(s2tt_maps_assigned_empty_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));
	}
}

void s2tt_maps_assigned_empty_block_tc3(void)
{
	/***************************************************************
	 * TEST CASE 3:
	 *
	 * Invoke s2tt_maps_assigned_empty_block() with the incorrect
	 * level.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa;
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/*
	 * Get a PA aligned @level - 1 so we can create a table
	 * @level starting at such PA.
	 */
	pa = s2tt_test_helpers_gen_addr(level - 1L, true);

	/* Generate a valid table */
	s2tt_init_assigned_empty((const struct s2tt_context *)&s2tt_ctx,
				 &s2tt[0U], pa, level);

	CHECK_FALSE(s2tt_maps_assigned_empty_block(
				(const struct s2tt_context *)&s2tt_ctx,
				&s2tt[0U], level + 1L));
}

void s2tt_maps_assigned_empty_block_tc4(void)
{
	/***************************************************************
	 * TEST CASE 4:
	 *
	 * Invoke s2tt_maps_assigned_empty_block() with a valid level
	 * and a NULL table pointer.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();


	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_empty_block(
			(const struct s2tt_context *)&s2tt_ctx, NULL, level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_empty_block_tc5(void)
{
	/***************************************************************
	 * TEST CASE 5:
	 *
	 * Invoke s2tt_maps_assigned_empty_block() with a level above
	 * the maximum allowed.
	 ***************************************************************/

	long level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Generate a valid table */
	s2tt_init_assigned_empty((const struct s2tt_context *)&s2tt_ctx,
				 &s2tt[0U], pa, level);

	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_empty_block(
			(const struct s2tt_context *)&s2tt_ctx,
			&s2tt[0U], level + 1UL);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_empty_block_tc6(void)
{
	/***************************************************************
	 * TEST CASE 6:
	 *
	 * Invoke s2tt_maps_assigned_empty_block() with a level below
	 * the minimum allowed.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Generate a valid table */
	s2tt_init_assigned_empty((const struct s2tt_context *)&s2tt_ctx,
				 &s2tt[0U], pa, level);

	level = s2tt_test_helpers_min_table_lvl() - 1L;
	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_empty_block(
				(const struct s2tt_context *)&s2tt_ctx,
				&s2tt[0U], level - 1UL);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_empty_block_tc7(void)
{
	/***************************************************************
	 * TEST CASE 7:
	 *
	 * Invoke s2tt_maps_assigned_empty_block() with a NULL pointer
	 * to a s2tt_context structure.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Generate a valid table */
	s2tt_init_assigned_empty((const struct s2tt_context *)&s2tt_ctx,
				 &s2tt[0U], pa, level);

	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_empty_block(
					(const struct s2tt_context *)NULL,
					&s2tt[0U], level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_ram_block_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * For each valid level, create an assigned ram block and
	 * validate that s2tt_maps_assigned_ram_block() returns
	 * the expected value
	 ***************************************************************/

	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	for (long level = s2tt_test_helpers_min_block_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_TABLE_LVL; level++) {

		unsigned long s2tt[S2TTES_PER_S2TT];
		unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);

		/* Generate the table */
		s2tt_init_assigned_ram((const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], pa, level);

		CHECK_TRUE(s2tt_maps_assigned_ram_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));
	}
}

void s2tt_maps_assigned_ram_block_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * For each valid level, create an assigned ram block and
	 * then change a random TTE to a different type to validate
	 * that s2tt_maps_assigned_ram_block() returns the expected
	 * value
	 ***************************************************************/

	unsigned long unassigned_ripas[] = {S2TTE_INVALID_RIPAS_EMPTY,
					    S2TTE_INVALID_RIPAS_RAM,
					    S2TTE_NS,
					    S2TTE_INVALID_RIPAS_DESTROYED};
	unsigned long assigned_ripas[] = {S2TTE_INVALID_RIPAS_EMPTY,
					  S2TTE_NS,
					  S2TTE_INVALID_RIPAS_DESTROYED};
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	for (long level = s2tt_test_helpers_min_block_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_TABLE_LVL; level++) {

		unsigned int tte_idx =
			(unsigned int)test_helpers_get_rand_in_range(0UL,
					     S2TTES_PER_S2TT - 1UL);
		/* pickup a random type of unassigned S2TTE to test with */
		unsigned int idx =
			(unsigned int)test_helpers_get_rand_in_range(0UL,
					ARRAY_SIZE(unassigned_ripas) - 1UL);
		unsigned long s2tt[S2TTES_PER_S2TT];
		unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);

		/* Generate the table */
		s2tt_init_assigned_ram((const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], pa, level);

		/* Alter a random S2TTE on the table */
		s2tt[tte_idx] = s2tt_test_create_unassigned(
					(const struct s2tt_context *)&s2tt_ctx,
					unassigned_ripas[idx]);
		CHECK_FALSE(s2tt_maps_assigned_ram_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));

		/* pickup a random type of assigned S2TTE to test with */
		idx = (unsigned int)test_helpers_get_rand_in_range(0UL,
					ARRAY_SIZE(assigned_ripas) - 1UL);

		/* Alter a random S2TTE on the table */
		s2tt[tte_idx] = s2tt_test_create_assigned(
				(const struct s2tt_context *)&s2tt_ctx,
				pa, level, assigned_ripas[idx]);
		CHECK_FALSE(s2tt_maps_assigned_ram_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));
	}
}

void s2tt_maps_assigned_ram_block_tc3(void)
{
	/***************************************************************
	 * TEST CASE 3:
	 *
	 * Invoke s2tt_maps_assigned_ram_block() with the incorrect
	 * level.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa;
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/*
	 * Get a PA aligned @level - 1 so we can create a table
	 * @level starting at such PA.
	 */
	pa = s2tt_test_helpers_gen_addr(level - 1L, true);

	/* Generate a valid table */
	s2tt_init_assigned_ram((const struct s2tt_context *)&s2tt_ctx,
				&s2tt[0U], pa, level);

	CHECK_FALSE(s2tt_maps_assigned_ram_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level + 1L));
}

void s2tt_maps_assigned_ram_block_tc4(void)
{
	/***************************************************************
	 * TEST CASE 4:
	 *
	 * Invoke s2tt_maps_assigned_ram_block() with a valid level
	 * and a NULL table pointer.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_ram_block(
			(const struct s2tt_context *)&s2tt_ctx, NULL, level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_ram_block_tc5(void)
{
	/***************************************************************
	 * TEST CASE 5:
	 *
	 * Invoke s2tt_maps_assigned_ram_block() with a level above
	 * the maximum allowed.
	 ***************************************************************/

	long level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Generate a valid table */
	s2tt_init_assigned_ram((const struct s2tt_context *)&s2tt_ctx,
				&s2tt[0U], pa, level);

	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_ram_block(
				(const struct s2tt_context *)&s2tt_ctx,
				&s2tt[0U], level + 1UL);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_ram_block_tc6(void)
{
	/***************************************************************
	 * TEST CASE 6:
	 *
	 * Invoke s2tt_maps_assigned_ram_block() with a level below
	 * the minimum allowed.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Generate a valid table */
	s2tt_init_assigned_ram((const struct s2tt_context *)&s2tt_ctx,
				&s2tt[0U], pa, level);

	level = s2tt_test_helpers_min_table_lvl() - 1L;
	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_ram_block((const struct s2tt_context *)&s2tt_ctx,
					   &s2tt[0U], level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_ram_block_tc7(void)
{
	/***************************************************************
	 * TEST CASE 7:
	 *
	 * Invoke s2tt_maps_assigned_ram_block() with a NULL pointer to
	 * s2tt_context structure.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Generate a valid table */
	s2tt_init_assigned_ram((const struct s2tt_context *)&s2tt_ctx,
				&s2tt[0U], pa, level);

	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_ram_block((const struct s2tt_context *)NULL,
					   &s2tt[0U], level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_ns_block_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * For each valid level, create an assigned ns block and
	 * validate that s2tt_maps_assigned_ns_block() returns
	 * the expected value
	 ***************************************************************/

	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	for (long level = s2tt_test_helpers_min_block_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_TABLE_LVL; level++) {

		unsigned long s2tt[S2TTES_PER_S2TT];
		unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
		unsigned long attrs =
			s2tt_test_helpers_gen_ns_attrs(true, false);

		/* Generate the table */
		s2tt_init_assigned_ns((const struct s2tt_context *)&s2tt_ctx,
				      &s2tt[0U], attrs, pa, level);

		CHECK_TRUE(s2tt_maps_assigned_ns_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));
	}
}

void s2tt_maps_assigned_ns_block_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * For each valid level, create an assigned ns block and
	 * alter the NS attributes of a random TTE with a random value.
	 * Then verify that s2tt_maps_assigned_ns_block() returns
	 * the expected value.
	 ***************************************************************/

	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	for (long level = s2tt_test_helpers_min_block_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_TABLE_LVL; level++) {

		unsigned long s2tt[S2TTES_PER_S2TT];
		unsigned int index = test_helpers_get_rand_in_range(0UL,
							S2TTES_PER_S2TT - 1UL);
		unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
		unsigned long new_attrs, attrs =
			s2tt_test_helpers_gen_ns_attrs(true, false);

		/* Generate the table */
		s2tt_init_assigned_ns((const struct s2tt_context *)&s2tt_ctx,
				      &s2tt[0U], attrs, pa, level);

		/* Generate the offending set of NS attrs */
		do {
			new_attrs = test_helpers_get_rand_in_range(0UL, ULONG_MAX)
					& S2TTE_NS_ATTR_MASK;
		} while (new_attrs == (s2tt[0U] & S2TTE_NS_ATTR_MASK));

		/* Alter the NS attributes on a random TTE */
		s2tt[index] &= ~S2TTE_NS_ATTR_MASK;
		s2tt[index] |= new_attrs;

		CHECK_FALSE(s2tt_maps_assigned_ns_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));
	}
}

void s2tt_maps_assigned_ns_block_tc3(void)
{
	/***************************************************************
	 * TEST CASE 3:
	 *
	 * For each valid level, create an assigned ns block and
	 * then change a random TTE to a different type to validate
	 * that s2tt_maps_assigned_ns_block() returns the expected
	 * value
	 ***************************************************************/

	unsigned long unassigned_ripas[] = {S2TTE_INVALID_RIPAS_EMPTY,
					    S2TTE_INVALID_RIPAS_RAM,
					    S2TTE_NS,
					    S2TTE_INVALID_RIPAS_DESTROYED};
	unsigned long assigned_ripas[] = {S2TTE_INVALID_RIPAS_EMPTY,
					  S2TTE_INVALID_RIPAS_RAM,
					  S2TTE_INVALID_RIPAS_DESTROYED};

	unsigned long attrs = s2tt_test_helpers_gen_ns_attrs(true, false);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	for (long level = s2tt_test_helpers_min_block_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_TABLE_LVL; level++) {

		unsigned int tte_idx =
			(unsigned int)test_helpers_get_rand_in_range(0UL,
					     S2TTES_PER_S2TT - 1UL);
		/* pickup a random type of unassigned S2TTE to test with */
		unsigned int idx =
			(unsigned int)test_helpers_get_rand_in_range(0UL,
					ARRAY_SIZE(unassigned_ripas) - 1UL);
		unsigned long s2tt[S2TTES_PER_S2TT];
		unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);

		/* Generate the table */
		s2tt_init_assigned_ns((const struct s2tt_context *)&s2tt_ctx,
				      &s2tt[0U], attrs, pa, level);

		/* Alter a random S2TTE on the table */
		s2tt[tte_idx] = s2tt_test_create_unassigned(
					(const struct s2tt_context *)&s2tt_ctx,
					unassigned_ripas[idx]);
		CHECK_FALSE(s2tt_maps_assigned_ns_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));

		/* pickup a random type of assigned S2TTE to test with */
		idx = (unsigned int)test_helpers_get_rand_in_range(0UL,
					ARRAY_SIZE(assigned_ripas) - 1UL);

		/* Alter a random S2TTE on the table */
		s2tt[tte_idx] = s2tt_test_create_assigned(
					(const struct s2tt_context *)&s2tt_ctx,
					pa, level, assigned_ripas[idx]);
		CHECK_FALSE(s2tt_maps_assigned_ns_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));
	}
}

void s2tt_maps_assigned_ns_block_tc4(void)
{
	/***************************************************************
	 * TEST CASE 4:
	 *
	 * Invoke s2tt_maps_assigned_ns_block() with the incorrect
	 * level.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long attrs = s2tt_test_helpers_gen_ns_attrs(true, false);
	unsigned long pa;
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Get a PA aligned only to 'level' */
	do {
		pa = s2tt_test_helpers_gen_addr(level, true);

	} while (s2tte_is_addr_lvl_aligned((const struct s2tt_context *)&s2tt_ctx,
					   pa, level - 1L));

	/* Generate a valid table */
	s2tt_init_assigned_ns((const struct s2tt_context *)&s2tt_ctx,
			      &s2tt[0U], attrs, pa, level);

	CHECK_FALSE(s2tt_maps_assigned_ns_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));
}

void s2tt_maps_assigned_ns_block_tc5(void)
{
	/***************************************************************
	 * TEST CASE 5:
	 *
	 * Invoke s2tt_maps_assigned_ns_block() with a valid level
	 * and a NULL table pointer.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_ns_block(
			(const struct s2tt_context *)&s2tt_ctx, NULL, level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_ns_block_tc6(void)
{
	/***************************************************************
	 * TEST CASE 6:
	 *
	 * Invoke s2tt_maps_assigned_ns_block() with a level above
	 * the maximum allowed.
	 ***************************************************************/

	long level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
	unsigned long attrs = s2tt_test_helpers_gen_ns_attrs(true, false);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Generate a valid table */
	s2tt_init_assigned_ns((const struct s2tt_context *)&s2tt_ctx,
			      &s2tt[0U], attrs, pa, level);

	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_ram_block((const struct s2tt_context *)&s2tt_ctx,
			&s2tt[0U], level + 1UL);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_ns_block_tc7(void)
{
	/***************************************************************
	 * TEST CASE 7:
	 *
	 * Invoke s2tt_maps_assigned_ram_block() with a level below
	 * the minimum allowed.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
	unsigned long attrs = s2tt_test_helpers_gen_ns_attrs(true, false);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Generate a valid table */
	s2tt_init_assigned_ns((const struct s2tt_context *)&s2tt_ctx,
			      &s2tt[0U], attrs, pa, level);

	level = s2tt_test_helpers_min_table_lvl() - 1L;
	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_ns_block((const struct s2tt_context *)&s2tt_ctx,
					  &s2tt[0U], level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_ns_block_tc8(void)
{
	/***************************************************************
	 * TEST CASE 8:
	 *
	 * Invoke s2tt_maps_assigned_ram_block() with a NULL pointer to
	 * s2tt_context structure.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
	unsigned long attrs = s2tt_test_helpers_gen_ns_attrs(true, false);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Generate a valid table */
	s2tt_init_assigned_ns((const struct s2tt_context *)&s2tt_ctx,
			      &s2tt[0U], attrs, pa, level);

	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_ns_block((const struct s2tt_context *)NULL,
					  &s2tt[0U], level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_destroyed_block_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * For each valid level, create an assigned destroyed block and
	 * validate that s2tt_maps_assigned_destroyed_block() returns
	 * the expected value
	 ***************************************************************/

	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	for (long level = s2tt_test_helpers_min_block_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_TABLE_LVL; level++) {

		unsigned long s2tt[S2TTES_PER_S2TT];
		unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);

		/* Generate the table */
		s2tt_init_assigned_destroyed(
				(const struct s2tt_context *)&s2tt_ctx,
				&s2tt[0U], pa, level);

		CHECK_TRUE(s2tt_maps_assigned_destroyed_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));
	}
}

void s2tt_maps_assigned_destroyed_block_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * For each valid level, create an assigned destroyed block and
	 * then change a random TTE to a different type to validate
	 * that s2tt_maps_assigned_destroyed_block() returns the
	 * expected value
	 ***************************************************************/

	unsigned long unassigned_ripas[] = {S2TTE_INVALID_RIPAS_EMPTY,
					    S2TTE_INVALID_RIPAS_RAM,
					    S2TTE_NS,
					    S2TTE_INVALID_RIPAS_DESTROYED};
	unsigned long assigned_ripas[] = {S2TTE_INVALID_RIPAS_EMPTY,
					  S2TTE_NS,
					  S2TTE_INVALID_RIPAS_RAM};
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	for (long level = s2tt_test_helpers_min_block_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_TABLE_LVL; level++) {

		unsigned int tte_idx =
			(unsigned int)test_helpers_get_rand_in_range(0UL,
					     S2TTES_PER_S2TT - 1UL);
		/* pickup a random type of unassigned S2TTE to test with */
		unsigned int idx =
			(unsigned int)test_helpers_get_rand_in_range(0UL,
					ARRAY_SIZE(unassigned_ripas) - 1UL);
		unsigned long s2tt[S2TTES_PER_S2TT];
		unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);

		/* Generate the table */
		s2tt_init_assigned_destroyed(
				(const struct s2tt_context *)&s2tt_ctx,
				&s2tt[0U], pa, level);

		/* Alter a random S2TTE on the table */
		s2tt[tte_idx] = s2tt_test_create_unassigned(
				(const struct s2tt_context *)&s2tt_ctx,
				unassigned_ripas[idx]);
		CHECK_FALSE(s2tt_maps_assigned_destroyed_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));

		/* pickup a random type of assigned S2TTE to test with */
		idx = (unsigned int)test_helpers_get_rand_in_range(0UL,
					ARRAY_SIZE(assigned_ripas) - 1UL);

		/* Alter a random S2TTE on the table */
		s2tt[tte_idx] = s2tt_test_create_assigned(
				(const struct s2tt_context *)&s2tt_ctx,
				pa, level, assigned_ripas[idx]);
		CHECK_FALSE(s2tt_maps_assigned_destroyed_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level));
	}
}

void s2tt_maps_assigned_destroyed_block_tc3(void)
{
	/***************************************************************
	 * TEST CASE 3:
	 *
	 * Invoke s2tt_maps_assigned_destroyed_block() with the
	 * incorrect level.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa;
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/*
	 * Get a PA aligned only to 'level' - 1 so we can spawn a table
	 * at level 'level' starting on that PA.
	 */
	pa = s2tt_test_helpers_gen_addr(level - 1L, true);

	/* Generate a valid table */
	s2tt_init_assigned_destroyed((const struct s2tt_context *)&s2tt_ctx,
				     &s2tt[0U], pa, level);

	CHECK_FALSE(s2tt_maps_assigned_destroyed_block(
				(const struct s2tt_context *)&s2tt_ctx,
				&s2tt[0U], level + 1L));
}

void s2tt_maps_assigned_destroyed_block_tc4(void)
{
	/***************************************************************
	 * TEST CASE 4:
	 *
	 * Invoke s2tt_maps_assigned_destroyed_block() with a valid
	 * level and a NULL table pointer.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_destroyed_block((
					const struct s2tt_context *)&s2tt_ctx,
					NULL, level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_destroyed_block_tc5(void)
{
	/***************************************************************
	 * TEST CASE 5:
	 *
	 * Invoke s2tt_maps_assigned_destroyed_block() with a level
	 * above the maximum allowed.
	 ***************************************************************/

	long level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Generate a valid table */
	s2tt_init_assigned_destroyed((const struct s2tt_context *)&s2tt_ctx,
				     &s2tt[0U], pa, level);

	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_destroyed_block(
				(const struct s2tt_context *)&s2tt_ctx,
				&s2tt[0U], level + 1L);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_destroyed_block_tc6(void)
{
	/***************************************************************
	 * TEST CASE 6:
	 *
	 * Invoke s2tt_maps_assigned_destroyed_block() with a level
	 * below the minimum allowed.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Generate a valid table */
	s2tt_init_assigned_destroyed((const struct s2tt_context *)&s2tt_ctx,
				     &s2tt[0U], pa, level);

	test_helpers_expect_assert_fail(true);
	level = s2tt_test_helpers_min_table_lvl() - 1L;
	(void)s2tt_maps_assigned_destroyed_block(
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U], level);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_maps_assigned_destroyed_block_tc7(void)
{
	/***************************************************************
	 * TEST CASE 7:
	 *
	 * Invoke s2tt_maps_assigned_destroyed_block() with a NULL
	 * pointer to a s2tt_context structure.
	 ***************************************************************/

	long level = s2tt_test_helpers_min_block_lvl();
	unsigned long s2tt[S2TTES_PER_S2TT];
	unsigned long pa = s2tt_test_helpers_gen_addr(level - 1L, true);
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	/* Generate a valid table */
	s2tt_init_assigned_destroyed((const struct s2tt_context *)&s2tt_ctx,
				     &s2tt[0U], pa, level);

	test_helpers_expect_assert_fail(true);
	(void)s2tt_maps_assigned_destroyed_block(
					(const struct s2tt_context *)NULL,
					&s2tt[0U], level);
	test_helpers_fail_if_no_assert_failed();
}

/*
 * Ancillary function to generate a test input to test
 * s2tt_skip_non_live_entries(). The only input required to this function
 * is @wi.index. The rest are output values.
 *
 *	- Arguments:
 *		iter: Iteration number.
 *			0: generate a live S2TTE at index > wi.index,
 *			1: generate a live S2TTE at index at wi.index,
 *			2: generate a live S2TTE at index < wi.index.
 *		wi: The s2tt_walk structure to pass to
 *		    s2tt_skip_non_live_entries(). Other than wi.level, all
 *		    other fieds are setup by this helper.
 *		tte_idx: tte index where the live entry is generated.
 *		entry_ipa: the aligned IPA corresponding to the entry
 *			   at `table_ipa[tte_idx]`
 *		ipa: An unaligned IPA belonging to the block/page
 *		     pointed by the entry at `table_ipa[wi.index]`.
 *
 *	- Returns: The expected ipa that should be returned by
 *		   s2tt_skip_non_live_entries() as per the test input.
 */
static unsigned long skip_non_live_entries_gen_ipas(unsigned int iter,
						    struct s2tt_walk *wi,
						    unsigned int *tte_idx,
						    unsigned long *entry_ipa,
						    unsigned long *ipa)
{
	long level = wi->last_level;
	unsigned long table_ipa, next_stt_ipa;

	/*
	 * Initialize wi.index somewhere in the middle of the table.
	 * Note that level -1 has only 16 entries.
	 */
	if (level == S2TT_TEST_HELPERS_MIN_LVL_LPA2) {
		wi->index = test_helpers_get_rand_in_range(5UL, 10UL);
	} else {
		wi->index = test_helpers_get_rand_in_range(100UL, 200UL);
	}

	switch (iter) {
	case 0U:
		/* Get a random index > wi.index */
		*tte_idx =
			(unsigned int)test_helpers_get_rand_in_range(
					wi->index + 1UL, S2TTES_PER_S2TT - 1UL);
		break;
	case 1U:
		/* Test index will be wi.index */
		*tte_idx = wi->index;
		break;
	case 2U:
		/* Get a random index < wi.index */
		*tte_idx = (unsigned int)test_helpers_get_rand_in_range(
						0UL, wi->index - 1UL);
		break;
	default:
		/* Not allowed */
		assert(false);
	}

	/*
	 * Get an IPA aligned @level - 1, so we would have a table
	 * @level starting at such IPA.
	 */
	table_ipa = s2tt_test_helpers_gen_addr(level - 1L, true);

	/*
	 * Calculate the IPA of the entry on the table
	 * indexed by tte_idx.
	 */
	*entry_ipa = table_ipa + (s2tte_map_size(level) * (*tte_idx));

	/* Calculate the IPA for the next table */
	next_stt_ipa = table_ipa + (s2tte_map_size(level) * S2TTES_PER_S2TT);

	/* Calculate a non-aligned valid IPA at wi.index used to test */

	*ipa = table_ipa + (s2tte_map_size(level) * wi->index) +
				test_helpers_get_rand_in_range(1UL,
				s2tte_map_size(level) - 1UL);

	/*
	 * Depending on `iter`, the expected address returned by
	 * s2tt_skip_non_live_entries() will be:
	 *
	 *	- When 'iter' == 0: *entry_ipa
	 *	- When 'iter' == 1: *ipa
	 *	- When 'iter' == 2: The IPA of the next s2tt (next_stt_ipa)
	 */
	return ((iter == 0U) ? *entry_ipa :
		((iter == 1U) ? *ipa : next_stt_ipa));
}

void s2tt_skip_non_live_entries_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * For every valid level, generate a set of tests for
	 * s2tt_skip_non_live_entries():
	 *	- Test with an unassigned entry/table with a live
	 *	  entry > wi.index.
	 *	- Test with an unassigned entry/table with the entry
	 *	  at wi.index being live.
	 *	- Test with an unassigned entry/table with a random
	 *	  live entry at a random index < wi.index.
	 *	- Test with an unassigned entry/table with no live
	 *	  entries.
	 ***************************************************************/

	unsigned long ripas[] = {S2TTE_INVALID_RIPAS_EMPTY,
				 S2TTE_NS,
				 S2TTE_INVALID_RIPAS_RAM,
				 S2TTE_INVALID_RIPAS_DESTROYED};

	init_unassigned_cb init_unassigned_cbs[] = {
		s2tt_init_unassigned_empty,
		s2tt_init_unassigned_ns,
		s2tt_init_unassigned_ram,
		s2tt_init_unassigned_destroyed
	};
	s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test.
	 * only s2tt_ctx.enable_lpa2 is of use on this API, so
	 * the rest of them can be uninitialized.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	for (long level = s2tt_test_helpers_min_table_lvl();
	     level <= S2TT_TEST_HELPERS_MAX_LVL; level++) {

		unsigned long entry_ipa, ret_ipa, expected_ipa, ipa;
		unsigned long s2tt[S2TTES_PER_S2TT];
		unsigned int tte_idx, cb_idx = 0U;
		struct s2tt_walk wi = {
			NULL,  /* Not needed */
			0UL,
			level};

		for (unsigned int i = 0U; i < 3U; i++) {

			expected_ipa = skip_non_live_entries_gen_ipas(
					i, &wi, &tte_idx, &entry_ipa, &ipa);

			if (level < s2tt_test_helpers_min_block_lvl()) {
				/* Table */

				/*
				 * Clear the s2tt so there are no valid
				 * table entries
				 */
				(void)memset((void *)&s2tt[0], 0, sizeof(s2tt));

				/* Generate a live entry at the random index */
				s2tt[tte_idx] =
					s2tte_create_table(
						(const struct s2tt_context *)&s2tt_ctx,
						entry_ipa, level);
			} else {
				/* Block or page */

				/*
				 * Generate an unassigned table of a random
				 * RIPAS type and add an assigned entry of a
				 * random RIPAS type at the random index.
				 */
				cb_idx = (unsigned int)test_helpers_get_rand_in_range(0UL,
						ARRAY_SIZE(init_unassigned_cbs) - 1UL);
				init_unassigned_cbs[cb_idx](
					(const struct s2tt_context *)&s2tt_ctx,
					&s2tt[0U]);

				cb_idx = (unsigned int)test_helpers_get_rand_in_range(0UL,
						ARRAY_SIZE(ripas) - 1UL);
				s2tt[tte_idx] =
					s2tt_test_create_assigned(
						(const struct s2tt_context *)&s2tt_ctx,
						entry_ipa, level, ripas[cb_idx]);
			}

			/* Validate s2tt_skip_non_live_entries() with current params */
			ret_ipa = s2tt_skip_non_live_entries(
					(const struct s2tt_context *)&s2tt_ctx,
					ipa, &s2tt[0U], &wi);
			CHECK_TRUE(expected_ipa == ret_ipa);
		} /* TEST ID */

		/*
		 * Test with a table without live entries. By recycling the
		 * arguments from the last test when `iter` == 2, we should
		 * also get the same results.
		 */
		if (level < s2tt_test_helpers_min_block_lvl()) {
			/* Table */
			(void)memset((void *)&s2tt[0], 0, sizeof(s2tt));
		} else {
			/* Block or Page */
			init_unassigned_cbs[cb_idx](
				(const struct s2tt_context *)&s2tt_ctx, &s2tt[0U]);
		}

		/* Validate s2tt_skip_non_live_entries() with current params */
		ret_ipa = s2tt_skip_non_live_entries(
				(const struct s2tt_context *)&s2tt_ctx,
				ipa, &s2tt[0U], &wi);
		UNSIGNED_LONGS_EQUAL(expected_ipa, ret_ipa);
	} /* LEVEL */
}

void s2tt_skip_non_live_entries_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * Call s2tt_skip_non_live_entries() with a NULL s2tt pointer.
	 ***************************************************************/

	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	struct s2tt_walk wi = {
		NULL,  /* Not needed */
		0UL,
		0UL};

	/*
	 * Generate an s2tt context to be used for the test. Only
	 * enable_lpa2 field is needed for the current test.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	test_helpers_expect_assert_fail(true);
	(void)s2tt_skip_non_live_entries((const struct s2tt_context *)&s2tt_ctx,
					 0UL, NULL, &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_skip_non_live_entries_tc3(void)
{
	/***************************************************************
	 * TEST CASE 3:
	 *
	 * Call s2tt_skip_non_live_entries() with a NULL s2tt_walk struct
	 * pointer.
	 ***************************************************************/

	unsigned long s2tt[S2TTES_PER_S2TT];
	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/*
	 * Generate an s2tt context to be used for the test. Only
	 * enable_lpa2 field is needed for the current test.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	test_helpers_expect_assert_fail(true);
	(void)s2tt_skip_non_live_entries((const struct s2tt_context *)&s2tt_ctx,
					 0UL, &s2tt[0U], NULL);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_skip_non_live_entries_tc4(void)
{
	/***************************************************************
	 * TEST CASE 4:
	 *
	 * Call s2tt_skip_non_live_entries() with a s2tt_walk struct in
	 * which the level is below the minimum allowed.
	 ***************************************************************/

	unsigned long s2tt[S2TTES_PER_S2TT];
	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	struct s2tt_walk wi = {
		NULL,  /* Not needed */
		0UL,
		s2tt_test_helpers_min_table_lvl() - 1U};

	/*
	 * Generate an s2tt context to be used for the test. Only
	 * enable_lpa2 field is needed for the current test.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();
	test_helpers_expect_assert_fail(true);
	(void)s2tt_skip_non_live_entries((const struct s2tt_context *)&s2tt_ctx,
					 0UL, &s2tt[0U], &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_skip_non_live_entries_tc5(void)
{
	/***************************************************************
	 * TEST CASE 5:
	 *
	 * Call s2tt_skip_non_live_entries() with a s2tt_walk struct in
	 * which the level is above the maximum allowed.
	 ***************************************************************/

	unsigned long s2tt[S2TTES_PER_S2TT];
	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	struct s2tt_walk wi = {
		NULL,  /* Not needed */
		0UL,
		S2TT_TEST_HELPERS_MAX_LVL + 1U};

	/*
	 * Generate an s2tt context to be used for the test. Only
	 * enable_lpa2 field is needed for the current test.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();
	test_helpers_expect_assert_fail(true);
	(void)s2tt_skip_non_live_entries((const struct s2tt_context *)&s2tt_ctx,
					 0UL, &s2tt[0U], &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_skip_non_live_entries_tc6(void)
{
	/***************************************************************
	 * TEST CASE 6:
	 *
	 * Call s2tt_skip_non_live_entries() with a s2tt_walk struct in
	 * which the index is above the maximum permitted
	 ***************************************************************/

	unsigned long s2tt[S2TTES_PER_S2TT];
	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	struct s2tt_walk wi = {
		NULL,  /* Not needed */
		S2TTES_PER_S2TT + 1UL,
		s2tt_test_helpers_min_table_lvl()};

	/*
	 * Generate an s2tt context to be used for the test. Only
	 * enable_lpa2 field is needed for the current test.
	 */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();
	test_helpers_expect_assert_fail(true);
	(void)s2tt_skip_non_live_entries((const struct s2tt_context *)&s2tt_ctx,
					 0UL, &s2tt[0U], &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_skip_non_live_entries_tc7(void)
{
	/***************************************************************
	 * TEST CASE 7:
	 *
	 * Call s2tt_skip_non_live_entries() with a NULL pointer to
	 * s2tt_context structure.
	 ***************************************************************/

	unsigned long s2tt[S2TTES_PER_S2TT];
	struct s2tt_walk wi = {
		NULL,  /* Not needed */
		0UL,
		s2tt_test_helpers_min_table_lvl()};

	test_helpers_expect_assert_fail(true);
	(void)s2tt_skip_non_live_entries((const struct s2tt_context *)NULL,
					 0UL, &s2tt[0U], &wi);
	test_helpers_fail_if_no_assert_failed();
}

/*
 * Ancillary function to populate a set of S2 translation tables given an IPA.
 * It generates a set of concatenated tables starting at SL + 1.
 *
 * Arguments:
 *	- ipa: IPA mapped to the translation table. It is the caller
 *	       responsibility to ensure that the index at SL of the
 *	       table walk does not exceed S2TTE_MAX_CONCAT_TABLES.
 *	- tt_walk_idx: An array of indexes to the tables in tt_walk[] used
 *		       to walk the tables.
 *	- tt_walk: An array of tt base addresses for each level which will be
 *		   used to walk the tables.
 *	- end_lvl: Level at which the walk would finish.
 *	- tt_granules: Array to store the struct granule pointers corresponding
 *		       to tt_walk[] entries.
 *	- val_tt_granule: The expected struct granule* of the S2TT at the end of
 *			  test function.
 *
 * This function creates a set of S2TTE_MAX_CONCAT_TABLES at the level after
 * the starting one (sl), which is sl+1. The `ipa` argument is such that the
 * translation table hierarchy at sl+1 level will be within the
 * S2TTE_MAX_CONCAT_TABLES. This allows the caller to test concatenated tables
 * by using thranslaton tables hierarchy at sl+1 level as the start level to
 * the test function. As an example, the layout of an array of adjacent granules
 * which will be used to create a translation table hierarchy starting from
 * level 0 to level 3 would be as follows:
 *
 *			 --------------------------
 *	    granule_base | Level -1 S2TT          | (Unused in this example)
 *			 --------------------------
 *			 | Level 0 S2TT           |
 *			 -------------------------- ---
 *			 | 1st Level 1 S2TT       |    \
 *			 --------------------------     \
 *			 | 2nd Level 1 S2TT       |      \
 *			 --------------------------       \
 *			 | (...)                  |        | Concatenated tables
 *			 --------------------------       /
 *			 | 15th Level 1 S2TT      |      /
 *			 --------------------------     /
 *			 | 16th Level 1 S2T       |    /
 *                       -------------------------- ---
 *			 | Level 2 S2TT           |
 *                       --------------------------
 *			 | Level 3 S2TT           |
 *                       --------------------------
 *
 * It is the caller responsibility to ensure that all the arrays passed to this
 * function are sized correctly.
 *
 * Also note that when FEAT_LPA2 is available, the architectural minimum start
 * level supported by stage 2 lookup will be '-1', therefore an offset of one
 * will be added to all the indexes used to index the tt_walk* arrays to offset
 * the negative value. For simplicity, the offset will be applied even when
 * FEAT_LPA2 is not available (SL == 0).
 */
static void populate_s2tts(struct s2tt_context *s2tt_ctx,
			   unsigned long ipa, unsigned long *tt_walk_idx,
			   unsigned long *tt_walk, long end_lvl,
			   struct granule **tt_granules,
			   struct granule **val_tt_granule)
{
	long sl = s2tt_test_helpers_min_table_lvl();
	unsigned int next_granule;
	unsigned long current_table;
	unsigned long *table;
	unsigned long *parent_table;
	long level;
	unsigned long granule_base = host_util_get_granule_base();
	struct granule *str_granule_base = test_helpers_granule_struct_base();
	unsigned int n_granules = S2TTE_MAX_CONCAT_TABLES +
					(S2TT_TEST_HELPERS_MAX_LVL -
					 S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U);

	/* Initialize the granules for the translaton tables */
	for (unsigned int i = 0U; i < n_granules; i++) {
		tt_granules[i] = str_granule_base + i;
		s2tt_test_granule_set_state(tt_granules[i], GRANULE_STATE_RTT);
		s2tt_test_granule_set_lock(tt_granules[i], false);
	};

	/* Root granule must be locked. */
	s2tt_test_granule_set_lock(tt_granules[sl + 1L], true);

	/*
	 * Initialize the index for the root granule. Note that SL can be -1
	 */
	next_granule = sl + 1L;

	/* Iterate over all the levels and generate the translatation tables */
	for (level = sl; level <= end_lvl; level++) {
		tt_walk_idx[level + 1L] =
			s2tt_test_helpers_get_idx_from_addr(ipa, level);

		if (level == sl) {
			/*
			 * Start Level. Get and initialize a table
			 * for this level.
			 */
			tt_walk[level + 1L] = (granule_base +
					(GRANULE_SIZE * next_granule++));
			table = (unsigned long *)tt_walk[level + 1L];
			(void)memset((void *)table, 0, GRANULE_SIZE);
		} else if (level == sl + 1L) {
			/*
			 * Level after the SL. This level will include the
			 * set of concatenated tables.
			 */
			parent_table = (unsigned long *)tt_walk[level];

			/*
			 * Create the set of S2TTE_MAX_CONCAT_TABLES
			 * concatenated tables and populate each entry of the
			 * parent table (at level SL) to point to them.
			 */
			for (unsigned int i = 0U;
			     i < S2TTE_MAX_CONCAT_TABLES; i++) {
				unsigned long concat_table = (granule_base +
					(GRANULE_SIZE * next_granule++));
				parent_table[i] =
					s2tte_create_table(
						(const struct s2tt_context *)s2tt_ctx,
						concat_table, level);

				/* Clean this level tables */
				(void)memset((void *)concat_table, 0, GRANULE_SIZE);
			}

			/*
			 * Now there are S2TTE_MAX_CONCAT_TABLES concatenated
			 * tables on this level, of which only one will be used
			 * during the table walk. Find that table and assign it
			 * to the current level of tt_walk[].
			 */
			tt_walk[level + 1L] = (granule_base +
				((sl + 2 + tt_walk_idx[level]) * GRANULE_SIZE));
		} else if (level < S2TT_TEST_HELPERS_MAX_LVL) {
			/*
			 * Tables between the start level + 1 and the
			 * page level.
			 */
			parent_table = (unsigned long *)tt_walk[level];

			/* Get, store and initialize the table on this level */
			current_table = (granule_base +
					(GRANULE_SIZE * next_granule++));
			tt_walk[level + 1L] = current_table;
			(void)memset((void *)current_table, 0, GRANULE_SIZE);

			/* And assign the table to the current level of tt_walk[] */
			parent_table[tt_walk_idx[level]] =
					s2tte_create_table(
						(const struct s2tt_context *)s2tt_ctx,
						current_table, level - 1L);
		} else {
			/* Page Level */
			parent_table = (unsigned long *)tt_walk[level];

			/* Get, store and initialize the table on this level */
			current_table = (granule_base +
					(GRANULE_SIZE * next_granule++));
			tt_walk[level + 1L] = current_table;

			/*
			 * Initialize the table as a L3 table.
			 * We initialize as assigned-ram for no particular
			 * reason using the IPA as PA.
			 */
			table = (unsigned long *)current_table;
			s2tt_init_assigned_ram((const struct s2tt_context *)s2tt_ctx,
				table, (ipa & s2tt_test_helpers_lvl_mask(level)), level);

			/* And assign the table to the current level of tt_walk[] */
			parent_table[tt_walk_idx[level]] =
					s2tte_create_table(
						(const struct s2tt_context *)s2tt_ctx,
						current_table, level - 1L);
		}
	}

	/* Generate the expected validation granule */
	*val_tt_granule = addr_to_granule(tt_walk[end_lvl + 1]);
}

void s2tt_walk_lock_unlock_tc1(void)
{
	/***************************************************************
	 * TEST CASE 1:
	 *
	 * Several positive tests:
	 *	- 1a) Generate a random mapping starting at the minimum
	 *	  possible level up to the maximum one and use
	 *	  s2tt_walk_lock_unlock() to walk the translation
	 *	  table and validate its output.
	 *	- 1b) Repeat the test above, but starting the walk at
	 *	  (SL + 1) so as to test the concatenated tables support.
	 *	- 2a & 2b) Repeat the two tests above, but finalising the
	 *	  walk at a level below the maximum one.
	 *	- 3a & 3b) Repeat the first two tests, but completing the
	 *	  tables up to a level below the maximum one and calling
	 *	  s2tt_walk_lock_unlock() with a level above the last
	 *	  one mapped on the translation tables.
	 *
	 * The level after the starting one will have
	 * S2TTE_MAX_CONCAT_TABLES concatenated granules so to test the
	 * concatenated starting levels.
	 ***************************************************************/

	long sl = s2tt_test_helpers_min_table_lvl();
	const long end_level = S2TT_TEST_HELPERS_MAX_LVL;
	long end_level_x;
	unsigned long pa, sl_index;
	unsigned long tt_walk_idx[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	unsigned long tt_walk[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	struct s2tt_walk wi;
	struct granule *val_tt_granule;
	struct s2tt_context s2tt_ctx;

	(void)memset(&s2tt_ctx, 0, sizeof(s2tt_ctx));

	/* Total number of granules, included the concatenated ones */
	const unsigned int granules = S2TTE_MAX_CONCAT_TABLES +
				(end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U);

	/*
	 * Granules to hold the translation tables,
	 * including concatenated ones.
	 */
	struct granule *g_tables[granules];

	/*
	 * Generate a random address that spans across the whole IPA size
	 * but whose walk index at SL + 1 is within
	 * S2TTE_MAX_CONCAT_TABLES range so the address can also be used to
	 * test concatenated root table support.
	 *
	 * The address doesn't need to have any alignment.
	 */
	do {
		pa = test_helpers_get_rand_in_range(1UL,
						(1UL << arch_feat_get_pa_width()) - 1UL);
		sl_index = s2tt_test_helpers_get_idx_from_addr(pa, sl);
	} while (sl_index >= S2TTE_MAX_CONCAT_TABLES);

	/* Generate an s2tt context to be used for the test */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	populate_s2tts(&s2tt_ctx, pa, &tt_walk_idx[0U], &tt_walk[0U],
		       end_level, &g_tables[0U], &val_tt_granule);

	/* Finish the creation of the s2tt_context */
	s2tt_ctx.ipa_bits = arch_feat_get_pa_width();
	s2tt_ctx.s2_starting_level = sl;
	s2tt_ctx.g_rtt = g_tables[sl + 1UL];
	s2tt_ctx.num_root_rtts = 1U;

	/*
	 * Invoke s2tt_walk_lock_unlock() with the generated translation tables
	 *
	 * (Test 1a)
	 */
	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level, &wi);

	LONGS_EQUAL(end_level, wi.last_level);
	CHECK_TRUE(val_tt_granule == wi.g_llt);
	UNSIGNED_LONGS_EQUAL(tt_walk_idx[end_level + 1U], wi.index);

	for (unsigned int i = sl + 1U; i < granules; i++) {
		if (g_tables[i] == wi.g_llt) {
			/* Granule must be locked */
			CHECK_TRUE(LOCKED(wi.g_llt));
		} else {
			/* Granule must be unlocked */
			CHECK_FALSE(LOCKED(g_tables[i]));
		}
	}

	/*
	 * Repeat the test, but this time starting from the next level after
	 * the starting one, so we can test the concatenated tables.
	 *
	 * (Test 1b)
	 */
	(void)memset(&wi, 0, sizeof(wi));

	/* Initialize the granules for the translaton tables */
	for (unsigned int i = 0U; i < granules; i++) {
		s2tt_test_granule_set_lock(g_tables[i], false);
	};

	/*
	 * Root granule must be locked. In this case, the root granule is
	 * the granule after the minimum level plus one.
	 */
	s2tt_test_granule_set_lock(g_tables[sl + 2], true);

	/*
	 * Invoke s2tt_walk_lock_unlock() with the generated translation tables
	 * starting on the next starting level.
	 */
	s2tt_ctx.s2_starting_level = sl + 1L;
	s2tt_ctx.g_rtt = g_tables[sl + 2UL];
	s2tt_ctx.num_root_rtts = S2TTE_MAX_CONCAT_TABLES;

	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level, &wi);

	LONGS_EQUAL(end_level, wi.last_level);
	CHECK_TRUE(val_tt_granule == wi.g_llt);
	LONGS_EQUAL(tt_walk_idx[end_level + 1U], wi.index);

	for (unsigned int i = sl + 1U; i < granules; i++) {
		if (g_tables[i] == wi.g_llt) {
			/* Granule must be locked */
			CHECK_TRUE(LOCKED(wi.g_llt));
		} else {
			/* Granule must be unlocked */
			CHECK_FALSE(LOCKED(g_tables[i]));
		}
	}

	/*
	 * Repeat both the tests above, but this time finalizing the walk
	 * a level below the maximum one. Reuse the structures initialized
	 * on the test before.
	 *
	 * (Test 2a & 2b)
	 */
	(void)memset(&wi, 0, sizeof(wi));

	/* Initialize the granules for the translaton tables */
	for (unsigned int i = 0U; i < granules; i++) {
		s2tt_test_granule_set_lock(g_tables[i], false);
	};

	/* Root granule must be locked */
	s2tt_test_granule_set_lock(g_tables[sl + 1], true);

	s2tt_ctx.s2_starting_level = sl;
	s2tt_ctx.g_rtt = g_tables[sl + 1UL];
	s2tt_ctx.num_root_rtts = 1U;

	/*
	 * Update the expected end_level and validation granule
	 *
	 * (Test 2a)
	 */
	end_level_x = S2TT_TEST_HELPERS_MAX_LVL - 1U;
	val_tt_granule = addr_to_granule(tt_walk[end_level_x + 1U]);

	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level_x, &wi);

	LONGS_EQUAL(end_level_x, wi.last_level);
	CHECK_TRUE(val_tt_granule == wi.g_llt);
	LONGS_EQUAL(tt_walk_idx[end_level_x + 1U], wi.index);

	for (unsigned int i = sl + 1U; i < granules; i++) {
		if (g_tables[i] == wi.g_llt) {
			/* Granule must be locked */
			CHECK_TRUE(LOCKED(wi.g_llt));
		} else {
			/* Granule must be unlocked */
			CHECK_FALSE(LOCKED(g_tables[i]));
		}
	}

	/*
	 * Repeat the test, but this time starting from the next level after
	 * the starting one, so we can test the concatenated tables.
	 *
	 * (Test 2b)
	 */
	(void)memset(&wi, 0, sizeof(wi));

	/* Initialize the granules for the translaton tables */
	for (unsigned int i = 0U; i < granules; i++) {
		s2tt_test_granule_set_lock(g_tables[i], false);
	};

	/* Root granule must be locked */
	s2tt_test_granule_set_lock(g_tables[sl + 2], true);

	/*
	 * Invoke s2tt_walk_lock_unlock() with the generated translation tables
	 * starting on the next starting level.
	 */
	s2tt_ctx.s2_starting_level = sl + 1L;
	s2tt_ctx.g_rtt = g_tables[sl + 2UL];
	s2tt_ctx.num_root_rtts = S2TTE_MAX_CONCAT_TABLES;

	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level_x, &wi);

	LONGS_EQUAL(end_level_x, wi.last_level);
	CHECK_TRUE(val_tt_granule == wi.g_llt);
	LONGS_EQUAL(tt_walk_idx[end_level_x + 1U], wi.index);

	for (unsigned int i = sl + 1U; i < granules; i++) {
		if (g_tables[i] == wi.g_llt) {
			/* Granule must be locked */
			CHECK_TRUE(LOCKED(wi.g_llt));
		} else {
			/* Granule must be unlocked */
			CHECK_FALSE(LOCKED(g_tables[i]));
		}
	}

	/*
	 * Repeat the two first tests, but this time the mapping will
	 * be finalizing a level below the maximum one and
	 * s2tt_walk_lock_unlock() will be called to walk up to the
	 * maximum level.
	 *
	 * (Tests 3a & 3b)
	 */
	end_level_x = S2TT_TEST_HELPERS_MAX_LVL;
	(void)memset(&wi, 0, sizeof(wi));

	populate_s2tts(&s2tt_ctx, pa, &tt_walk_idx[0U], &tt_walk[0U],
		       end_level_x - 1L, &g_tables[0U], &val_tt_granule);

	s2tt_ctx.s2_starting_level = sl;
	s2tt_ctx.g_rtt = g_tables[sl + 1UL];
	s2tt_ctx.num_root_rtts = 1;

	/* Test 3a */
	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			     pa, end_level_x, &wi);

	LONGS_EQUAL((end_level_x - 1L), wi.last_level);
	CHECK_TRUE(val_tt_granule == wi.g_llt);
	LONGS_EQUAL(tt_walk_idx[end_level_x], wi.index);

	for (unsigned int i = sl + 1U; i < granules; i++) {
		if (g_tables[i] == wi.g_llt) {
			/* Granule must be locked */
			CHECK_TRUE(LOCKED(wi.g_llt));
		} else {
			/* Granule must be unlocked */
			CHECK_FALSE(LOCKED(g_tables[i]));
		}
	}

	/*
	 * Repeat the test, but this time starting from the next level after
	 * the starting one, so we can test the concatenated tables.
	 *
	 * (Test 3b)
	 */
	(void)memset(&wi, 0, sizeof(wi));

	/* Initialize the granules for the translaton tables */
	for (unsigned int i = 0U; i < granules; i++) {
		s2tt_test_granule_set_lock(g_tables[i], false);
	};

	/* Root granule must be locked */
	s2tt_test_granule_set_lock(g_tables[sl + 2], true);

	/*
	 * Invoke s2tt_walk_lock_unlock() with the generated translation tables
	 * starting on the next starting level.
	 */
	s2tt_ctx.s2_starting_level = sl + 1L;
	s2tt_ctx.g_rtt = g_tables[sl + 2UL];
	s2tt_ctx.num_root_rtts = S2TTE_MAX_CONCAT_TABLES;

	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			     pa, end_level_x, &wi);

	LONGS_EQUAL((end_level_x - 1L), wi.last_level);
	CHECK_TRUE(val_tt_granule == wi.g_llt);
	LONGS_EQUAL(tt_walk_idx[end_level_x], wi.index);

	for (unsigned int i = sl + 1U; i < granules; i++) {
		if (g_tables[i] == wi.g_llt) {
			/* Granule must be locked */
			CHECK_TRUE(LOCKED(wi.g_llt));
		} else {
			/* Granule must be unlocked */
			CHECK_FALSE(LOCKED(g_tables[i]));
		}
	}
}

void s2tt_walk_lock_unlock_tc2(void)
{
	/***************************************************************
	 * TEST CASE 2:
	 *
	 * Test s2tt_walk_lock_unlock() with a set of tables in wich
	 * the granule of one of them is not set to 'GRANULE_STATE_RTT'
	 ***************************************************************/

	long sl = s2tt_test_helpers_min_table_lvl();
	const long end_level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long pa;
	unsigned long sl_index;
	unsigned long tt_walk_idx[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	unsigned long tt_walk[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	struct s2tt_walk wi;
	struct granule *val_tt_granule;
	struct s2tt_context s2tt_ctx;

	/* Total number of granules, included the concatenated ones */
	const unsigned int granules = S2TTE_MAX_CONCAT_TABLES +
				(end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U);

	/*
	 * Granules to hold the translation tables,
	 * including concatenated ones.
	 */
	struct granule *g_tables[granules];

	/*
	 * Generate a random address that spans across the whole IPA size
	 * but whose walk index at SL + 1 is within
	 * S2TTE_MAX_CONCAT_TABLES range so the address can also be used to
	 * test concatenated root table support.
	 *
	 * The address doesn't need to have any alignment.
	 */
	do {
		pa = test_helpers_get_rand_in_range(1UL,
						(1UL << arch_feat_get_pa_width()) - 1UL);
		sl_index = s2tt_test_helpers_get_idx_from_addr(pa, sl);
	} while (sl_index >= S2TTE_MAX_CONCAT_TABLES);

	/* Generate an s2tt context to be used for the test */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();
	populate_s2tts(&s2tt_ctx, pa, &tt_walk_idx[0U], &tt_walk[0U],
		       end_level, &g_tables[0U], &val_tt_granule);

	/* Finish the creation of the s2tt_context */
	s2tt_ctx.ipa_bits = arch_feat_get_pa_width();
	s2tt_ctx.s2_starting_level = sl;
	s2tt_ctx.g_rtt = g_tables[sl + 1UL];
	s2tt_ctx.num_root_rtts = 1U;

	/*
	 * Change the granule state for an arbitrary level. In this case, we
	 * choose Level 2 for simplicity and convenience. The new granule
	 * state is also chosen arbitrarily.
	 *
	 * Note that index '0' corresponds to level '-1' and one of the
	 * intermediate levels (the level after the starting one) has
	 * 'S2TTE_MAX_CONCAT_TABLES' tables.
	 */
	s2tt_test_granule_set_state(g_tables[3 + S2TTE_MAX_CONCAT_TABLES],
				    GRANULE_STATE_RD);

	/* The call should cause an assertion failure */
	test_helpers_expect_assert_fail(true);
	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level, &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_walk_lock_unlock_tc3(void)
{
	/***************************************************************
	 * TEST CASE 3:
	 *
	 * Test s2tt_walk_lock_unlock() with a set of tables in which
	 * one of the granules is already locked.
	 ***************************************************************/

	long sl = s2tt_test_helpers_min_table_lvl();
	const long end_level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long pa;
	unsigned long tt_walk_idx[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	unsigned long tt_walk[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	struct s2tt_walk wi;
	struct granule *val_tt_granule;
	struct s2tt_context s2tt_ctx;

	/* Total number of granules, included the concatenated ones */
	const unsigned int granules = S2TTE_MAX_CONCAT_TABLES +
				(end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U);

	/*
	 * Granules to hold the translation tables,
	 * including concatenated ones.
	 */
	struct granule *g_tables[granules];

	/* Generate an s2tt context to be used for the test */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	pa = 0UL; /* Valid on any level */
	populate_s2tts(&s2tt_ctx, pa, &tt_walk_idx[0U], &tt_walk[0U],
		       end_level, &g_tables[0U], &val_tt_granule);

	/* Finish the creation of the s2tt_context */
	s2tt_ctx.ipa_bits = arch_feat_get_pa_width();
	s2tt_ctx.s2_starting_level = sl;
	s2tt_ctx.g_rtt = g_tables[sl + 1UL];
	s2tt_ctx.num_root_rtts = 1U;

	/*
	 * Lock the granule of an arbitrary level. In this case, we
	 * choose Level 2 for simplicity and convenience.
	 *
	 * Note that index '0' corresponds to level '-1' and one of the
	 * intermediate levels (the level after the starting one) has
	 * 'S2TTE_MAX_CONCAT_TABLES' tables.
	 */
	s2tt_test_granule_set_lock(g_tables[3 + S2TTE_MAX_CONCAT_TABLES], true);

	/* The call should cause an assertion failure */
	test_helpers_expect_assert_fail(true);
	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level, &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_walk_lock_unlock_tc4(void)
{
	/***************************************************************
	 * TEST CASE 4:
	 *
	 * Test s2tt_walk_lock_unlock() with a null array of granules.
	 ***************************************************************/

	long sl = s2tt_test_helpers_min_table_lvl();
	long end_level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long pa;
	struct s2tt_walk wi;
	struct s2tt_context s2tt_ctx;

	pa = 0UL;

	/* Generate an s2tt context to be used for the test */
	s2tt_ctx.ipa_bits = arch_feat_get_pa_width();
	s2tt_ctx.s2_starting_level = sl;
	s2tt_ctx.g_rtt = NULL;
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();
	s2tt_ctx.num_root_rtts = 1U;

	/* The call should cause an assertion failure */
	test_helpers_expect_assert_fail(true);
	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level, &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_walk_lock_unlock_tc5(void)
{
	/***************************************************************
	 * TEST CASE 5:
	 *
	 * Test s2tt_walk_lock_unlock() with a null s2tt_walk structure.
	 ***************************************************************/

	long sl = s2tt_test_helpers_min_table_lvl();
	const long end_level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long pa;
	unsigned long tt_walk_idx[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	unsigned long tt_walk[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	struct granule *val_tt_granule;
	struct s2tt_context s2tt_ctx;

	/* Total number of granules, included the concatenated ones */
	const unsigned int granules = S2TTE_MAX_CONCAT_TABLES +
				(end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U);

	/*
	 * Granules to hold the translation tables,
	 * including concatenated ones.
	 */
	struct granule *g_tables[granules];

	/* Generate an s2tt context to be used for the test */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	pa = 0UL; /* Valid on any level */
	populate_s2tts(&s2tt_ctx, pa, &tt_walk_idx[0U], &tt_walk[0U],
		       end_level, &g_tables[0U], &val_tt_granule);

	/* Finish the creation of the s2tt_context */
	s2tt_ctx.ipa_bits = arch_feat_get_pa_width();
	s2tt_ctx.s2_starting_level = sl;
	s2tt_ctx.g_rtt = NULL;
	s2tt_ctx.num_root_rtts = 1U;

	/* The call should cause an assertion failure */
	test_helpers_expect_assert_fail(true);
	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level, NULL);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_walk_lock_unlock_tc6(void)
{
	/***************************************************************
	 * TEST CASE 6:
	 *
	 * Test s2tt_walk_lock_unlock() with a start level above the
	 * maximum permitted.
	 ***************************************************************/

	long sl = s2tt_test_helpers_min_table_lvl();
	const long end_level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long pa;
	unsigned long tt_walk_idx[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	unsigned long tt_walk[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	struct s2tt_walk wi;
	struct granule *val_tt_granule;
	struct s2tt_context s2tt_ctx;

	/* Total number of granules, included the concatenated ones */
	const unsigned int granules = S2TTE_MAX_CONCAT_TABLES +
				(end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2);

	/*
	 * Granules to hold the translation tables,
	 * including concatenated ones.
	 */
	struct granule *g_tables[granules];

	/* Generate an s2tt context to be used for the test */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	pa = 0UL; /* Valid on any level */
	populate_s2tts(&s2tt_ctx, pa, &tt_walk_idx[0U], &tt_walk[0U],
		       end_level, &g_tables[0U], &val_tt_granule);

	/* Finish the creation of the s2tt_context */
	s2tt_ctx.ipa_bits = arch_feat_get_pa_width();
	s2tt_ctx.s2_starting_level = end_level +  1L;
	s2tt_ctx.g_rtt = g_tables[sl + 1U];
	s2tt_ctx.num_root_rtts = 1U;

	/* The call should cause an assertion failure */
	test_helpers_expect_assert_fail(true);
	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level, &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_walk_lock_unlock_tc7(void)
{
	/***************************************************************
	 * TEST CASE 7:
	 *
	 * Test s2tt_walk_lock_unlock() with a walk end level below the
	 * start level.
	 ***************************************************************/

	long sl = s2tt_test_helpers_min_table_lvl();
	const long end_level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long pa;
	unsigned long tt_walk_idx[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	unsigned long tt_walk[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	struct s2tt_walk wi;
	struct granule *val_tt_granule;
	struct s2tt_context s2tt_ctx;

	/* Total number of granules, included the concatenated ones */
	const unsigned int granules = S2TTE_MAX_CONCAT_TABLES +
				(end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U);

	/*
	 * Granules to hold the translation tables,
	 * including concatenated ones.
	 */
	struct granule *g_tables[granules];

	/* Generate an s2tt context to be used for the test */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	pa = 0UL; /* Valid on any level */
	populate_s2tts(&s2tt_ctx, pa, &tt_walk_idx[0U], &tt_walk[0U],
		       end_level, &g_tables[0U], &val_tt_granule);

	/* Finish the creation of the s2tt_context */
	s2tt_ctx.ipa_bits = arch_feat_get_pa_width();
	s2tt_ctx.s2_starting_level = sl;
	s2tt_ctx.g_rtt = g_tables[sl + 1U];
	s2tt_ctx.num_root_rtts = 1U;

	/* The call should cause an assertion failure */
	test_helpers_expect_assert_fail(true);
	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, sl - 1U, &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_walk_lock_unlock_tc8(void)
{
	/***************************************************************
	 * TEST CASE 8:
	 *
	 * Test s2tt_walk_lock_unlock() with an end walk level above the
	 * maximum permitted.
	 ***************************************************************/

	long sl = s2tt_test_helpers_min_table_lvl();
	const long end_level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long pa;
	unsigned long tt_walk_idx[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	unsigned long tt_walk[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	struct s2tt_walk wi;
	struct granule *val_tt_granule;
	struct s2tt_context s2tt_ctx;

	/* Total number of granules, included the concatenated ones */
	const unsigned int granules = S2TTE_MAX_CONCAT_TABLES +
				(end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U);

	/*
	 * Granules to hold the translation tables,
	 * including concatenated ones.
	 */
	struct granule *g_tables[granules];

	/* Generate an s2tt context to be used for the test */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	pa = 0UL; /* Valid on any level */
	populate_s2tts(&s2tt_ctx, pa, &tt_walk_idx[0U], &tt_walk[0U],
		       end_level, &g_tables[0U], &val_tt_granule);

	/* Finish the creation of the s2tt_context */
	s2tt_ctx.ipa_bits = arch_feat_get_pa_width();
	s2tt_ctx.s2_starting_level = sl;
	s2tt_ctx.g_rtt = g_tables[sl + 1U];
	s2tt_ctx.num_root_rtts = 1U;

	/* The call should cause an assertion failure */
	test_helpers_expect_assert_fail(true);
	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level + 1, &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_walk_lock_unlock_tc9(void)
{
	/***************************************************************
	 * TEST CASE 9:
	 *
	 * Test s2tt_walk_lock_unlock() with a PA above the maximum
	 * supported IPA size.
	 ***************************************************************/

	long sl = s2tt_test_helpers_min_table_lvl();
	const long end_level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long pa;
	unsigned long tt_walk_idx[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	unsigned long tt_walk[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	struct s2tt_walk wi;
	struct granule *val_tt_granule;
	s2tt_context s2tt_ctx;

	/* Total number of granules, included the concatenated ones */
	const unsigned int granules = S2TTE_MAX_CONCAT_TABLES +
		(end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U);

	/*
	 * Granules to hold the translation tables,
	 * including concatenated ones.
	 */
	struct granule *g_tables[granules];

	/* Generate an s2tt context to be used for the test */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	pa = 0UL; /* Valid on any level */

	populate_s2tts(&s2tt_ctx, pa, &tt_walk_idx[0U], &tt_walk[0U],
		       end_level, &g_tables[0U], &val_tt_granule);

	/* Finish the creation of the s2tt_context */
	s2tt_ctx.ipa_bits = arch_feat_get_pa_width();
	s2tt_ctx.s2_starting_level = sl;
	s2tt_ctx.g_rtt = g_tables[sl + 1U];
	s2tt_ctx.num_root_rtts = 1U;

	/* Generate an address larger than the maximum allowable size */
	pa = 1UL << s2tt_ctx.ipa_bits;

	/* The call should cause an assertion failure */
	test_helpers_expect_assert_fail(true);
	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level, &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_walk_lock_unlock_tc10(void)
{
	/***************************************************************
	 * TEST CASE 10:
	 *
	 * Test s2tt_walk_lock_unlock() with an invalid max ipa size.
	 ***************************************************************/

	long sl = s2tt_test_helpers_min_table_lvl();
	const long end_level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long pa;
	unsigned long tt_walk_idx[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	unsigned long tt_walk[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	struct s2tt_walk wi;
	struct granule *val_tt_granule;
	struct s2tt_context s2tt_ctx;

	/* Total number of granules, included the concatenated ones */
	const unsigned int granules = S2TTE_MAX_CONCAT_TABLES +
				(end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U);

	/*
	 * Granules to hold the translation tables,
	 * including concatenated ones.
	 */
	struct granule *g_tables[granules];

	/* Generate an s2tt context to be used for the test */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	pa = 0UL; /* Valid on any level */

	populate_s2tts(&s2tt_ctx, pa, &tt_walk_idx[0U], &tt_walk[0U],
		       end_level, &g_tables[0U], &val_tt_granule);

	/* Finish the creation of the s2tt_context */
	s2tt_ctx.ipa_bits = arch_feat_get_pa_width() + 1UL;
	s2tt_ctx.s2_starting_level = sl;
	s2tt_ctx.g_rtt = g_tables[sl + 1U];
	s2tt_ctx.num_root_rtts = 1U;

	/* The call should cause an assertion failure */
	test_helpers_expect_assert_fail(true);
	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level, &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_walk_lock_unlock_tc11(void)
{
	/***************************************************************
	 * TEST CASE 11:
	 *
	 * Test s2tt_walk_lock_unlock() with a combination of first
	 * look-up level and root tables in which the number of
	 * concatenated tables would result larger than the maximum
	 * permitted.
	 ***************************************************************/

	const long end_level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long pa;
	unsigned long sl_index;
	unsigned long tt_walk_idx[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	unsigned long tt_walk[end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U];
	struct s2tt_walk wi;
	struct granule *val_tt_granule;
	struct s2tt_context s2tt_ctx;

	/* Total number of granules, included the concatenated ones */
	const unsigned int granules = S2TTE_MAX_CONCAT_TABLES +
				(end_level - S2TT_TEST_HELPERS_MIN_LVL_LPA2 + 1U);

	/*
	 * Granules to hold the translation tables,
	 * including concatenated ones.
	 */
	struct granule *g_tables[granules];

	/*
	 * We need to generate a concatenated table at SL + 1 with a number
	 * of tables > S2TTE_MAX_CONCAT_TABLES. In order to avoid an
	 * overflowing IPA when FEAT_LPA2 is enabled, we set SL to be
	 * the architectural minimum plus 1.
	 */
	long sl = s2tt_test_helpers_min_table_lvl() + 1L;

	/*
	 * Generate a random address that spans across the whole IPA size but
	 * whose walk table index at SL is larger than S2TTE_MAX_CONCAT_TABLES.
	 *
	 * The address doesn't need to have any alignment.
	 */
	do {
		pa = test_helpers_get_rand_in_range(1UL,
					(1UL << arch_feat_get_pa_width()) - 1UL);
		sl_index = s2tt_test_helpers_get_idx_from_addr(pa, sl);
	} while (sl_index <= S2TTE_MAX_CONCAT_TABLES);

	/* Generate an s2tt context to be used for the test */
	s2tt_ctx.enable_lpa2 = s2tt_test_helpers_lpa2_enabled();

	populate_s2tts(&s2tt_ctx, pa, &tt_walk_idx[0U], &tt_walk[0U],
		       end_level, &g_tables[0U], &val_tt_granule);

	/* Finish the creation of the s2tt_context */
	s2tt_ctx.ipa_bits = arch_feat_get_pa_width();
	s2tt_ctx.s2_starting_level = sl + 1L;
	s2tt_ctx.g_rtt = g_tables[sl + 2U];
	s2tt_ctx.num_root_rtts = S2TTE_MAX_CONCAT_TABLES;

	/* The call should cause an assertion failure */
	test_helpers_expect_assert_fail(true);
	s2tt_walk_lock_unlock((const struct s2tt_context *)&s2tt_ctx,
			      pa, end_level, &wi);
	test_helpers_fail_if_no_assert_failed();
}

void s2tt_walk_lock_unlock_tc12(void)
{
	/***************************************************************
	 * TEST CASE 12:
	 *
	 * Test s2tt_walk_lock_unlock() with a null s2tt_context.
	 ***************************************************************/

	long end_level = S2TT_TEST_HELPERS_MAX_LVL;
	unsigned long pa;
	struct s2tt_walk wi;

	pa = 0UL;

	/* The call should cause an assertion failure */
	test_helpers_expect_assert_fail(true);
	s2tt_walk_lock_unlock((const struct s2tt_context *)NULL,
			      pa, end_level, &wi);
	test_helpers_fail_if_no_assert_failed();
}