property-entry-test.c
// SPDX-License-Identifier: GPL-2.0
// Unit tests for property entries API
//
// Copyright 2019 Google LLC.
#include <kunit/test.h>
#include <linux/property.h>
#include <linux/types.h>
static void pe_test_uints(struct kunit *test)
{
static const struct property_entry entries[] = {
PROPERTY_ENTRY_U8("prop-u8", 8),
PROPERTY_ENTRY_U16("prop-u16", 16),
PROPERTY_ENTRY_U32("prop-u32", 32),
PROPERTY_ENTRY_U64("prop-u64", 64),
{ }
};
struct fwnode_handle *node;
u8 val_u8, array_u8[2];
u16 val_u16, array_u16[2];
u32 val_u32, array_u32[2];
u64 val_u64, array_u64[2];
int error;
node = fwnode_create_software_node(entries, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
error = fwnode_property_count_u8(node, "prop-u8");
KUNIT_EXPECT_EQ(test, error, 1);
error = fwnode_property_read_u8(node, "prop-u8", &val_u8);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, val_u8, 8);
error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 1);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, array_u8[0], 8);
error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 2);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u8(node, "no-prop-u8", &val_u8);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u8_array(node, "no-prop-u8", array_u8, 1);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u16(node, "prop-u16", &val_u16);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, val_u16, 16);
error = fwnode_property_count_u16(node, "prop-u16");
KUNIT_EXPECT_EQ(test, error, 1);
error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 1);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, array_u16[0], 16);
error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 2);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u16(node, "no-prop-u16", &val_u16);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u16_array(node, "no-prop-u16", array_u16, 1);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u32(node, "prop-u32", &val_u32);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, val_u32, 32);
error = fwnode_property_count_u32(node, "prop-u32");
KUNIT_EXPECT_EQ(test, error, 1);
error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 1);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, array_u32[0], 32);
error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 2);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u32(node, "no-prop-u32", &val_u32);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u32_array(node, "no-prop-u32", array_u32, 1);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u64(node, "prop-u64", &val_u64);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, val_u64, 64);
error = fwnode_property_count_u64(node, "prop-u64");
KUNIT_EXPECT_EQ(test, error, 1);
error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 1);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, array_u64[0], 64);
error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 2);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u64(node, "no-prop-u64", &val_u64);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u64_array(node, "no-prop-u64", array_u64, 1);
KUNIT_EXPECT_NE(test, error, 0);
/* Count 64-bit values as 16-bit */
error = fwnode_property_count_u16(node, "prop-u64");
KUNIT_EXPECT_EQ(test, error, 4);
fwnode_remove_software_node(node);
}
static void pe_test_uint_arrays(struct kunit *test)
{
static const u8 a_u8[10] = { 8, 9 };
static const u16 a_u16[10] = { 16, 17 };
static const u32 a_u32[10] = { 32, 33 };
static const u64 a_u64[10] = { 64, 65 };
static const struct property_entry entries[] = {
PROPERTY_ENTRY_U8_ARRAY("prop-u8", a_u8),
PROPERTY_ENTRY_U16_ARRAY("prop-u16", a_u16),
PROPERTY_ENTRY_U32_ARRAY("prop-u32", a_u32),
PROPERTY_ENTRY_U64_ARRAY("prop-u64", a_u64),
{ }
};
struct fwnode_handle *node;
u8 val_u8, array_u8[32];
u16 val_u16, array_u16[32];
u32 val_u32, array_u32[32];
u64 val_u64, array_u64[32];
int error;
node = fwnode_create_software_node(entries, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
error = fwnode_property_read_u8(node, "prop-u8", &val_u8);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, val_u8, 8);
error = fwnode_property_count_u8(node, "prop-u8");
KUNIT_EXPECT_EQ(test, error, 10);
error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 1);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, array_u8[0], 8);
error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 2);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, array_u8[0], 8);
KUNIT_EXPECT_EQ(test, array_u8[1], 9);
error = fwnode_property_read_u8_array(node, "prop-u8", array_u8, 17);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u8(node, "no-prop-u8", &val_u8);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u8_array(node, "no-prop-u8", array_u8, 1);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u16(node, "prop-u16", &val_u16);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, val_u16, 16);
error = fwnode_property_count_u16(node, "prop-u16");
KUNIT_EXPECT_EQ(test, error, 10);
error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 1);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, array_u16[0], 16);
error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 2);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, array_u16[0], 16);
KUNIT_EXPECT_EQ(test, array_u16[1], 17);
error = fwnode_property_read_u16_array(node, "prop-u16", array_u16, 17);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u16(node, "no-prop-u16", &val_u16);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u16_array(node, "no-prop-u16", array_u16, 1);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u32(node, "prop-u32", &val_u32);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, val_u32, 32);
error = fwnode_property_count_u32(node, "prop-u32");
KUNIT_EXPECT_EQ(test, error, 10);
error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 1);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, array_u32[0], 32);
error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 2);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, array_u32[0], 32);
KUNIT_EXPECT_EQ(test, array_u32[1], 33);
error = fwnode_property_read_u32_array(node, "prop-u32", array_u32, 17);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u32(node, "no-prop-u32", &val_u32);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u32_array(node, "no-prop-u32", array_u32, 1);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u64(node, "prop-u64", &val_u64);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, val_u64, 64);
error = fwnode_property_count_u64(node, "prop-u64");
KUNIT_EXPECT_EQ(test, error, 10);
error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 1);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, array_u64[0], 64);
error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 2);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_EQ(test, array_u64[0], 64);
KUNIT_EXPECT_EQ(test, array_u64[1], 65);
error = fwnode_property_read_u64_array(node, "prop-u64", array_u64, 17);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u64(node, "no-prop-u64", &val_u64);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_u64_array(node, "no-prop-u64", array_u64, 1);
KUNIT_EXPECT_NE(test, error, 0);
/* Count 64-bit values as 16-bit */
error = fwnode_property_count_u16(node, "prop-u64");
KUNIT_EXPECT_EQ(test, error, 40);
/* Other way around */
error = fwnode_property_count_u64(node, "prop-u16");
KUNIT_EXPECT_EQ(test, error, 2);
fwnode_remove_software_node(node);
}
static void pe_test_strings(struct kunit *test)
{
static const char *strings[] = {
"string-a",
"string-b",
};
static const struct property_entry entries[] = {
PROPERTY_ENTRY_STRING("str", "single"),
PROPERTY_ENTRY_STRING("empty", ""),
PROPERTY_ENTRY_STRING_ARRAY("strs", strings),
{ }
};
struct fwnode_handle *node;
const char *str;
const char *strs[10];
int error;
node = fwnode_create_software_node(entries, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
error = fwnode_property_read_string(node, "str", &str);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_STREQ(test, str, "single");
error = fwnode_property_string_array_count(node, "str");
KUNIT_EXPECT_EQ(test, error, 1);
error = fwnode_property_read_string_array(node, "str", strs, 1);
KUNIT_EXPECT_EQ(test, error, 1);
KUNIT_EXPECT_STREQ(test, strs[0], "single");
/* asking for more data returns what we have */
error = fwnode_property_read_string_array(node, "str", strs, 2);
KUNIT_EXPECT_EQ(test, error, 1);
KUNIT_EXPECT_STREQ(test, strs[0], "single");
error = fwnode_property_read_string(node, "no-str", &str);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_read_string_array(node, "no-str", strs, 1);
KUNIT_EXPECT_LT(test, error, 0);
error = fwnode_property_read_string(node, "empty", &str);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_STREQ(test, str, "");
error = fwnode_property_string_array_count(node, "strs");
KUNIT_EXPECT_EQ(test, error, 2);
error = fwnode_property_read_string_array(node, "strs", strs, 3);
KUNIT_EXPECT_EQ(test, error, 2);
KUNIT_EXPECT_STREQ(test, strs[0], "string-a");
KUNIT_EXPECT_STREQ(test, strs[1], "string-b");
error = fwnode_property_read_string_array(node, "strs", strs, 1);
KUNIT_EXPECT_EQ(test, error, 1);
KUNIT_EXPECT_STREQ(test, strs[0], "string-a");
/* NULL argument -> returns size */
error = fwnode_property_read_string_array(node, "strs", NULL, 0);
KUNIT_EXPECT_EQ(test, error, 2);
/* accessing array as single value */
error = fwnode_property_read_string(node, "strs", &str);
KUNIT_EXPECT_EQ(test, error, 0);
KUNIT_EXPECT_STREQ(test, str, "string-a");
fwnode_remove_software_node(node);
}
static void pe_test_bool(struct kunit *test)
{
static const struct property_entry entries[] = {
PROPERTY_ENTRY_BOOL("prop"),
{ }
};
struct fwnode_handle *node;
node = fwnode_create_software_node(entries, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
KUNIT_EXPECT_TRUE(test, fwnode_property_read_bool(node, "prop"));
KUNIT_EXPECT_FALSE(test, fwnode_property_read_bool(node, "not-prop"));
fwnode_remove_software_node(node);
}
/* Verifies that small U8 array is stored inline when property is copied */
static void pe_test_move_inline_u8(struct kunit *test)
{
static const u8 u8_array_small[8] = { 1, 2, 3, 4 };
static const u8 u8_array_big[128] = { 5, 6, 7, 8 };
static const struct property_entry entries[] = {
PROPERTY_ENTRY_U8_ARRAY("small", u8_array_small),
PROPERTY_ENTRY_U8_ARRAY("big", u8_array_big),
{ }
};
struct property_entry *copy;
const u8 *data_ptr;
copy = property_entries_dup(entries);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, copy);
KUNIT_EXPECT_TRUE(test, copy[0].is_inline);
data_ptr = (u8 *)©[0].value;
KUNIT_EXPECT_EQ(test, data_ptr[0], 1);
KUNIT_EXPECT_EQ(test, data_ptr[1], 2);
KUNIT_EXPECT_FALSE(test, copy[1].is_inline);
data_ptr = copy[1].pointer;
KUNIT_EXPECT_EQ(test, data_ptr[0], 5);
KUNIT_EXPECT_EQ(test, data_ptr[1], 6);
property_entries_free(copy);
}
/* Verifies that single string array is stored inline when property is copied */
static void pe_test_move_inline_str(struct kunit *test)
{
static char *str_array_small[] = { "a" };
static char *str_array_big[] = { "b", "c", "d", "e" };
static char *str_array_small_empty[] = { "" };
static struct property_entry entries[] = {
PROPERTY_ENTRY_STRING_ARRAY("small", str_array_small),
PROPERTY_ENTRY_STRING_ARRAY("big", str_array_big),
PROPERTY_ENTRY_STRING_ARRAY("small-empty", str_array_small_empty),
{ }
};
struct property_entry *copy;
const char * const *data_ptr;
copy = property_entries_dup(entries);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, copy);
KUNIT_EXPECT_TRUE(test, copy[0].is_inline);
KUNIT_EXPECT_STREQ(test, copy[0].value.str[0], "a");
KUNIT_EXPECT_FALSE(test, copy[1].is_inline);
data_ptr = copy[1].pointer;
KUNIT_EXPECT_STREQ(test, data_ptr[0], "b");
KUNIT_EXPECT_STREQ(test, data_ptr[1], "c");
KUNIT_EXPECT_TRUE(test, copy[2].is_inline);
KUNIT_EXPECT_STREQ(test, copy[2].value.str[0], "");
property_entries_free(copy);
}
/* Handling of reference properties */
static void pe_test_reference(struct kunit *test)
{
static const struct software_node nodes[] = {
{ .name = "1", },
{ .name = "2", },
{ }
};
static const struct software_node_ref_args refs[] = {
SOFTWARE_NODE_REFERENCE(&nodes[0]),
SOFTWARE_NODE_REFERENCE(&nodes[1], 3, 4),
};
const struct property_entry entries[] = {
PROPERTY_ENTRY_REF("ref-1", &nodes[0]),
PROPERTY_ENTRY_REF("ref-2", &nodes[1], 1, 2),
PROPERTY_ENTRY_REF_ARRAY("ref-3", refs),
{ }
};
struct fwnode_handle *node;
struct fwnode_reference_args ref;
int error;
error = software_node_register_nodes(nodes);
KUNIT_ASSERT_EQ(test, error, 0);
node = fwnode_create_software_node(entries, NULL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, node);
error = fwnode_property_get_reference_args(node, "ref-1", NULL,
0, 0, &ref);
KUNIT_ASSERT_EQ(test, error, 0);
KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &nodes[0]);
KUNIT_EXPECT_EQ(test, ref.nargs, 0U);
/* wrong index */
error = fwnode_property_get_reference_args(node, "ref-1", NULL,
0, 1, &ref);
KUNIT_EXPECT_NE(test, error, 0);
error = fwnode_property_get_reference_args(node, "ref-2", NULL,
1, 0, &ref);
KUNIT_ASSERT_EQ(test, error, 0);
KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &nodes[1]);
KUNIT_EXPECT_EQ(test, ref.nargs, 1U);
KUNIT_EXPECT_EQ(test, ref.args[0], 1LLU);
/* asking for more args, padded with zero data */
error = fwnode_property_get_reference_args(node, "ref-2", NULL,
3, 0, &ref);
KUNIT_ASSERT_EQ(test, error, 0);
KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &nodes[1]);
KUNIT_EXPECT_EQ(test, ref.nargs, 3U);
KUNIT_EXPECT_EQ(test, ref.args[0], 1LLU);
KUNIT_EXPECT_EQ(test, ref.args[1], 2LLU);
KUNIT_EXPECT_EQ(test, ref.args[2], 0LLU);
/* wrong index */
error = fwnode_property_get_reference_args(node, "ref-2", NULL,
2, 1, &ref);
KUNIT_EXPECT_NE(test, error, 0);
/* array of references */
error = fwnode_property_get_reference_args(node, "ref-3", NULL,
0, 0, &ref);
KUNIT_ASSERT_EQ(test, error, 0);
KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &nodes[0]);
KUNIT_EXPECT_EQ(test, ref.nargs, 0U);
/* second reference in the array */
error = fwnode_property_get_reference_args(node, "ref-3", NULL,
2, 1, &ref);
KUNIT_ASSERT_EQ(test, error, 0);
KUNIT_EXPECT_PTR_EQ(test, to_software_node(ref.fwnode), &nodes[1]);
KUNIT_EXPECT_EQ(test, ref.nargs, 2U);
KUNIT_EXPECT_EQ(test, ref.args[0], 3LLU);
KUNIT_EXPECT_EQ(test, ref.args[1], 4LLU);
/* wrong index */
error = fwnode_property_get_reference_args(node, "ref-1", NULL,
0, 2, &ref);
KUNIT_EXPECT_NE(test, error, 0);
fwnode_remove_software_node(node);
software_node_unregister_nodes(nodes);
}
static struct kunit_case property_entry_test_cases[] = {
KUNIT_CASE(pe_test_uints),
KUNIT_CASE(pe_test_uint_arrays),
KUNIT_CASE(pe_test_strings),
KUNIT_CASE(pe_test_bool),
KUNIT_CASE(pe_test_move_inline_u8),
KUNIT_CASE(pe_test_move_inline_str),
KUNIT_CASE(pe_test_reference),
{ }
};
static struct kunit_suite property_entry_test_suite = {
.name = "property-entry",
.test_cases = property_entry_test_cases,
};
kunit_test_suite(property_entry_test_suite);