regmap: kunit: Add test cases for regmap_read_bypassed()
This adds test cases to prove that regmap_read_bypassed() reads the hardware value while the regmap is in cache-only. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Link: https://msgid.link/r/20240408144600.230848-12-rf@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
parent
468d277e6f
commit
f63eb9ae08
@ -295,6 +295,135 @@ static void bulk_read(struct kunit *test)
|
||||
KUNIT_EXPECT_EQ(test, config.cache_type == REGCACHE_NONE, data->read[i]);
|
||||
}
|
||||
|
||||
static void read_bypassed(struct kunit *test)
|
||||
{
|
||||
const struct regmap_test_param *param = test->param_value;
|
||||
struct regmap *map;
|
||||
struct regmap_config config;
|
||||
struct regmap_ram_data *data;
|
||||
unsigned int val[BLOCK_TEST_SIZE], rval;
|
||||
int i;
|
||||
|
||||
config = test_regmap_config;
|
||||
|
||||
map = gen_regmap(test, &config, &data);
|
||||
KUNIT_ASSERT_FALSE(test, IS_ERR(map));
|
||||
if (IS_ERR(map))
|
||||
return;
|
||||
|
||||
KUNIT_EXPECT_FALSE(test, map->cache_bypass);
|
||||
|
||||
get_random_bytes(&val, sizeof(val));
|
||||
|
||||
/* Write some test values */
|
||||
KUNIT_EXPECT_EQ(test, 0, regmap_bulk_write(map, param->from_reg, val, ARRAY_SIZE(val)));
|
||||
|
||||
regcache_cache_only(map, true);
|
||||
|
||||
/*
|
||||
* While in cache-only regmap_read_bypassed() should return the register
|
||||
* value and leave the map in cache-only.
|
||||
*/
|
||||
for (i = 0; i < ARRAY_SIZE(val); i++) {
|
||||
/* Put inverted bits in rval to prove we really read the value */
|
||||
rval = ~val[i];
|
||||
KUNIT_EXPECT_EQ(test, 0, regmap_read(map, param->from_reg + i, &rval));
|
||||
KUNIT_EXPECT_EQ(test, val[i], rval);
|
||||
|
||||
rval = ~val[i];
|
||||
KUNIT_EXPECT_EQ(test, 0, regmap_read_bypassed(map, param->from_reg + i, &rval));
|
||||
KUNIT_EXPECT_EQ(test, val[i], rval);
|
||||
KUNIT_EXPECT_TRUE(test, map->cache_only);
|
||||
KUNIT_EXPECT_FALSE(test, map->cache_bypass);
|
||||
}
|
||||
|
||||
/*
|
||||
* Change the underlying register values to prove it is returning
|
||||
* real values not cached values.
|
||||
*/
|
||||
for (i = 0; i < ARRAY_SIZE(val); i++) {
|
||||
val[i] = ~val[i];
|
||||
data->vals[param->from_reg + i] = val[i];
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(val); i++) {
|
||||
rval = ~val[i];
|
||||
KUNIT_EXPECT_EQ(test, 0, regmap_read(map, param->from_reg + i, &rval));
|
||||
KUNIT_EXPECT_NE(test, val[i], rval);
|
||||
|
||||
rval = ~val[i];
|
||||
KUNIT_EXPECT_EQ(test, 0, regmap_read_bypassed(map, param->from_reg + i, &rval));
|
||||
KUNIT_EXPECT_EQ(test, val[i], rval);
|
||||
KUNIT_EXPECT_TRUE(test, map->cache_only);
|
||||
KUNIT_EXPECT_FALSE(test, map->cache_bypass);
|
||||
}
|
||||
}
|
||||
|
||||
static void read_bypassed_volatile(struct kunit *test)
|
||||
{
|
||||
const struct regmap_test_param *param = test->param_value;
|
||||
struct regmap *map;
|
||||
struct regmap_config config;
|
||||
struct regmap_ram_data *data;
|
||||
unsigned int val[BLOCK_TEST_SIZE], rval;
|
||||
int i;
|
||||
|
||||
config = test_regmap_config;
|
||||
/* All registers except #5 volatile */
|
||||
config.volatile_reg = reg_5_false;
|
||||
|
||||
map = gen_regmap(test, &config, &data);
|
||||
KUNIT_ASSERT_FALSE(test, IS_ERR(map));
|
||||
if (IS_ERR(map))
|
||||
return;
|
||||
|
||||
KUNIT_EXPECT_FALSE(test, map->cache_bypass);
|
||||
|
||||
get_random_bytes(&val, sizeof(val));
|
||||
|
||||
/* Write some test values */
|
||||
KUNIT_EXPECT_EQ(test, 0, regmap_bulk_write(map, param->from_reg, val, ARRAY_SIZE(val)));
|
||||
|
||||
regcache_cache_only(map, true);
|
||||
|
||||
/*
|
||||
* While in cache-only regmap_read_bypassed() should return the register
|
||||
* value and leave the map in cache-only.
|
||||
*/
|
||||
for (i = 0; i < ARRAY_SIZE(val); i++) {
|
||||
/* Register #5 is non-volatile so should read from cache */
|
||||
KUNIT_EXPECT_EQ(test, (i == 5) ? 0 : -EBUSY,
|
||||
regmap_read(map, param->from_reg + i, &rval));
|
||||
|
||||
/* Put inverted bits in rval to prove we really read the value */
|
||||
rval = ~val[i];
|
||||
KUNIT_EXPECT_EQ(test, 0, regmap_read_bypassed(map, param->from_reg + i, &rval));
|
||||
KUNIT_EXPECT_EQ(test, val[i], rval);
|
||||
KUNIT_EXPECT_TRUE(test, map->cache_only);
|
||||
KUNIT_EXPECT_FALSE(test, map->cache_bypass);
|
||||
}
|
||||
|
||||
/*
|
||||
* Change the underlying register values to prove it is returning
|
||||
* real values not cached values.
|
||||
*/
|
||||
for (i = 0; i < ARRAY_SIZE(val); i++) {
|
||||
val[i] = ~val[i];
|
||||
data->vals[param->from_reg + i] = val[i];
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(val); i++) {
|
||||
if (i == 5)
|
||||
continue;
|
||||
|
||||
rval = ~val[i];
|
||||
KUNIT_EXPECT_EQ(test, 0, regmap_read_bypassed(map, param->from_reg + i, &rval));
|
||||
KUNIT_EXPECT_EQ(test, val[i], rval);
|
||||
KUNIT_EXPECT_TRUE(test, map->cache_only);
|
||||
KUNIT_EXPECT_FALSE(test, map->cache_bypass);
|
||||
}
|
||||
}
|
||||
|
||||
static void write_readonly(struct kunit *test)
|
||||
{
|
||||
struct regmap *map;
|
||||
@ -1747,6 +1876,8 @@ static void raw_ranges(struct kunit *test)
|
||||
|
||||
static struct kunit_case regmap_test_cases[] = {
|
||||
KUNIT_CASE_PARAM(basic_read_write, regcache_types_gen_params),
|
||||
KUNIT_CASE_PARAM(read_bypassed, real_cache_types_gen_params),
|
||||
KUNIT_CASE_PARAM(read_bypassed_volatile, real_cache_types_gen_params),
|
||||
KUNIT_CASE_PARAM(bulk_write, regcache_types_gen_params),
|
||||
KUNIT_CASE_PARAM(bulk_read, regcache_types_gen_params),
|
||||
KUNIT_CASE_PARAM(write_readonly, regcache_types_gen_params),
|
||||
|
Loading…
x
Reference in New Issue
Block a user