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Message-ID: <20240408144600.230848-7-rf@opensource.cirrus.com>
Date: Mon, 8 Apr 2024 15:45:55 +0100
From: Richard Fitzgerald <rf@...nsource.cirrus.com>
To: <broonie@...nel.org>
CC: <linux-kernel@...r.kernel.org>, <patches@...nsource.cirrus.com>,
"Richard
Fitzgerald" <rf@...nsource.cirrus.com>
Subject: [PATCH 06/11] regmap: kunit: Add more cache-drop tests
Extend the testing of cache-drop.
- Added cache_drop_all_and_sync_marked_dirty(). If all registers are
dropped from the cache a regcache_mark_dirty() followed by
regcache_sync() should not write anything because the cache is empty.
- Added cache_drop_all_and_sync_no_defaults(). This is similar to
cache_drop_all_and_sync_marked_dirty() except that regcache_mark_dirty()
is NOT called. All registers were dropped so regcache_sync() should not
write anything.
- Added cache_drop_all_and_sync_has_defaults(). This is the same as
cache_drop_all_and_sync_no_defaults() except that the regmap has a
table of default values.
Signed-off-by: Richard Fitzgerald <rf@...nsource.cirrus.com>
---
drivers/base/regmap/regmap-kunit.c | 135 +++++++++++++++++++++++++++++
1 file changed, 135 insertions(+)
diff --git a/drivers/base/regmap/regmap-kunit.c b/drivers/base/regmap/regmap-kunit.c
index 873161b58de9..3201f5f6406b 100644
--- a/drivers/base/regmap/regmap-kunit.c
+++ b/drivers/base/regmap/regmap-kunit.c
@@ -920,6 +920,138 @@ static void cache_drop(struct kunit *test)
regmap_exit(map);
}
+static void cache_drop_all_and_sync_marked_dirty(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 rval[BLOCK_TEST_SIZE];
+ int i;
+
+ config = test_regmap_config;
+ config.num_reg_defaults = BLOCK_TEST_SIZE;
+
+ map = gen_regmap(test, &config, &data);
+ KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+ if (IS_ERR(map))
+ return;
+
+ /* Ensure the data is read from the cache */
+ for (i = 0; i < BLOCK_TEST_SIZE; i++)
+ data->read[param->from_reg + i] = false;
+ KUNIT_EXPECT_EQ(test, 0, regmap_bulk_read(map, param->from_reg, rval,
+ BLOCK_TEST_SIZE));
+ KUNIT_EXPECT_MEMEQ(test, &data->vals[param->from_reg], rval, sizeof(rval));
+
+ /* Change all values in cache from defaults */
+ for (i = 0; i < BLOCK_TEST_SIZE; i++)
+ KUNIT_EXPECT_EQ(test, 0, regmap_write(map, param->from_reg + i, rval[i] + 1));
+
+ /* Drop all registers */
+ KUNIT_EXPECT_EQ(test, 0, regcache_drop_region(map, 0, config.max_register));
+
+ /* Mark dirty and cache sync should not write anything. */
+ regcache_mark_dirty(map);
+ for (i = 0; i < BLOCK_TEST_SIZE; i++)
+ data->written[param->from_reg + i] = false;
+
+ KUNIT_EXPECT_EQ(test, 0, regcache_sync(map));
+ for (i = 0; i <= config.max_register; i++)
+ KUNIT_EXPECT_FALSE(test, data->written[i]);
+
+ regmap_exit(map);
+}
+
+static void cache_drop_all_and_sync_no_defaults(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 rval[BLOCK_TEST_SIZE];
+ int i;
+
+ config = test_regmap_config;
+
+ map = gen_regmap(test, &config, &data);
+ KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+ if (IS_ERR(map))
+ return;
+
+ /* Ensure the data is read from the cache */
+ for (i = 0; i < BLOCK_TEST_SIZE; i++)
+ data->read[param->from_reg + i] = false;
+ KUNIT_EXPECT_EQ(test, 0, regmap_bulk_read(map, param->from_reg, rval,
+ BLOCK_TEST_SIZE));
+ KUNIT_EXPECT_MEMEQ(test, &data->vals[param->from_reg], rval, sizeof(rval));
+
+ /* Change all values in cache */
+ for (i = 0; i < BLOCK_TEST_SIZE; i++)
+ KUNIT_EXPECT_EQ(test, 0, regmap_write(map, param->from_reg + i, rval[i] + 1));
+
+ /* Drop all registers */
+ KUNIT_EXPECT_EQ(test, 0, regcache_drop_region(map, 0, config.max_register));
+
+ /*
+ * Sync cache without marking it dirty. All registers were dropped
+ * so the cache should not have any entries to write out.
+ */
+ for (i = 0; i < BLOCK_TEST_SIZE; i++)
+ data->written[param->from_reg + i] = false;
+
+ KUNIT_EXPECT_EQ(test, 0, regcache_sync(map));
+ for (i = 0; i <= config.max_register; i++)
+ KUNIT_EXPECT_FALSE(test, data->written[i]);
+
+ regmap_exit(map);
+}
+
+static void cache_drop_all_and_sync_has_defaults(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 rval[BLOCK_TEST_SIZE];
+ int i;
+
+ config = test_regmap_config;
+ config.num_reg_defaults = BLOCK_TEST_SIZE;
+
+ map = gen_regmap(test, &config, &data);
+ KUNIT_ASSERT_FALSE(test, IS_ERR(map));
+ if (IS_ERR(map))
+ return;
+
+ /* Ensure the data is read from the cache */
+ for (i = 0; i < BLOCK_TEST_SIZE; i++)
+ data->read[param->from_reg + i] = false;
+ KUNIT_EXPECT_EQ(test, 0, regmap_bulk_read(map, param->from_reg, rval,
+ BLOCK_TEST_SIZE));
+ KUNIT_EXPECT_MEMEQ(test, &data->vals[param->from_reg], rval, sizeof(rval));
+
+ /* Change all values in cache from defaults */
+ for (i = 0; i < BLOCK_TEST_SIZE; i++)
+ KUNIT_EXPECT_EQ(test, 0, regmap_write(map, param->from_reg + i, rval[i] + 1));
+
+ /* Drop all registers */
+ KUNIT_EXPECT_EQ(test, 0, regcache_drop_region(map, 0, config.max_register));
+
+ /*
+ * Sync cache without marking it dirty. All registers were dropped
+ * so the cache should not have any entries to write out.
+ */
+ for (i = 0; i < BLOCK_TEST_SIZE; i++)
+ data->written[param->from_reg + i] = false;
+
+ KUNIT_EXPECT_EQ(test, 0, regcache_sync(map));
+ for (i = 0; i <= config.max_register; i++)
+ KUNIT_EXPECT_FALSE(test, data->written[i]);
+
+ regmap_exit(map);
+}
+
static void cache_present(struct kunit *test)
{
const struct regmap_test_param *param = test->param_value;
@@ -1463,6 +1595,9 @@ static struct kunit_case regmap_test_cases[] = {
KUNIT_CASE_PARAM(cache_sync_readonly, real_cache_types_gen_params),
KUNIT_CASE_PARAM(cache_sync_patch, real_cache_types_gen_params),
KUNIT_CASE_PARAM(cache_drop, sparse_cache_types_gen_params),
+ KUNIT_CASE_PARAM(cache_drop_all_and_sync_marked_dirty, sparse_cache_types_gen_params),
+ KUNIT_CASE_PARAM(cache_drop_all_and_sync_no_defaults, sparse_cache_types_gen_params),
+ KUNIT_CASE_PARAM(cache_drop_all_and_sync_has_defaults, sparse_cache_types_gen_params),
KUNIT_CASE_PARAM(cache_present, sparse_cache_types_gen_params),
KUNIT_CASE_PARAM(cache_range_window_reg, real_cache_types_only_gen_params),
--
2.39.2
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