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Date: Mon, 8 Apr 2024 15:45:53 +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 04/11] regmap: kunit: Run sparse cache tests at non-zero register addresses
Run the cache_drop() and cache_present() tests at blocks of addresses
that don't start at zero.
This adds a from_reg parameter to struct regmap_test_param. This is
used to set the base address of the register defaults created by
gen_regmap().
Extra entries are added to sparse_cache_types_list[] to test at non-zero
from_reg values. The cache_drop() and cache_present() tests are updated
to test at the given offset.
The aim here is to add test cases to cache_drop() for the bug fixed by
commit 00bb549d7d63 ("regmap: maple: Fix cache corruption in
regcache_maple_drop()")
But the same parameter table is used by the cache_present() test so
let's also update that to use from_reg.
Signed-off-by: Richard Fitzgerald <rf@...nsource.cirrus.com>
---
drivers/base/regmap/regmap-kunit.c | 67 ++++++++++++++++++++----------
1 file changed, 45 insertions(+), 22 deletions(-)
diff --git a/drivers/base/regmap/regmap-kunit.c b/drivers/base/regmap/regmap-kunit.c
index 2029135f68fb..ae147fc8509b 100644
--- a/drivers/base/regmap/regmap-kunit.c
+++ b/drivers/base/regmap/regmap-kunit.c
@@ -17,6 +17,8 @@ struct regmap_test_priv {
struct regmap_test_param {
enum regcache_type cache;
enum regmap_endian val_endian;
+
+ unsigned int from_reg;
};
static void get_changed_bytes(void *orig, void *new, size_t size)
@@ -37,7 +39,6 @@ static void get_changed_bytes(void *orig, void *new, size_t size)
}
static const struct regmap_config test_regmap_config = {
- .max_register = BLOCK_TEST_SIZE,
.reg_stride = 1,
.val_bits = sizeof(unsigned int) * 8,
};
@@ -76,9 +77,10 @@ static const char *regmap_endian_name(enum regmap_endian endian)
static void param_to_desc(const struct regmap_test_param *param, char *desc)
{
- snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s-%s",
+ snprintf(desc, KUNIT_PARAM_DESC_SIZE, "%s-%s @%#x",
regcache_type_name(param->cache),
- regmap_endian_name(param->val_endian));
+ regmap_endian_name(param->val_endian),
+ param->from_reg);
}
static const struct regmap_test_param regcache_types_list[] = {
@@ -99,8 +101,16 @@ static const struct regmap_test_param real_cache_types_list[] = {
KUNIT_ARRAY_PARAM(real_cache_types, real_cache_types_list, param_to_desc);
static const struct regmap_test_param sparse_cache_types_list[] = {
- { .cache = REGCACHE_RBTREE },
- { .cache = REGCACHE_MAPLE },
+ { .cache = REGCACHE_RBTREE, .from_reg = 0 },
+ { .cache = REGCACHE_RBTREE, .from_reg = 0x2001 },
+ { .cache = REGCACHE_RBTREE, .from_reg = 0x2002 },
+ { .cache = REGCACHE_RBTREE, .from_reg = 0x2003 },
+ { .cache = REGCACHE_RBTREE, .from_reg = 0x2004 },
+ { .cache = REGCACHE_MAPLE, .from_reg = 0 },
+ { .cache = REGCACHE_MAPLE, .from_reg = 0x2001 },
+ { .cache = REGCACHE_MAPLE, .from_reg = 0x2002 },
+ { .cache = REGCACHE_MAPLE, .from_reg = 0x2003 },
+ { .cache = REGCACHE_MAPLE, .from_reg = 0x2004 },
};
KUNIT_ARRAY_PARAM(sparse_cache_types, sparse_cache_types_list, param_to_desc);
@@ -113,7 +123,7 @@ static struct regmap *gen_regmap(struct kunit *test,
struct regmap_test_priv *priv = test->priv;
unsigned int *buf;
struct regmap *ret;
- size_t size = (config->max_register + 1) * sizeof(unsigned int);
+ size_t size;
int i;
struct reg_default *defaults;
@@ -121,6 +131,16 @@ static struct regmap *gen_regmap(struct kunit *test,
config->disable_locking = config->cache_type == REGCACHE_RBTREE ||
config->cache_type == REGCACHE_MAPLE;
+ if (config->max_register == 0) {
+ config->max_register = param->from_reg;
+ if (config->num_reg_defaults)
+ config->max_register += (config->num_reg_defaults - 1) *
+ config->reg_stride;
+ else
+ config->max_register += (BLOCK_TEST_SIZE * config->reg_stride);
+ }
+
+ size = (config->max_register + 1) * sizeof(unsigned int);
buf = kmalloc(size, GFP_KERNEL);
if (!buf)
return ERR_PTR(-ENOMEM);
@@ -141,8 +161,8 @@ static struct regmap *gen_regmap(struct kunit *test,
config->reg_defaults = defaults;
for (i = 0; i < config->num_reg_defaults; i++) {
- defaults[i].reg = i * config->reg_stride;
- defaults[i].def = buf[i * config->reg_stride];
+ defaults[i].reg = param->from_reg + (i * config->reg_stride);
+ defaults[i].def = buf[param->from_reg + (i * config->reg_stride)];
}
}
@@ -832,6 +852,7 @@ static void cache_sync_patch(struct kunit *test)
static void cache_drop(struct kunit *test)
{
+ const struct regmap_test_param *param = test->param_value;
struct regmap *map;
struct regmap_config config;
struct regmap_ram_data *data;
@@ -848,30 +869,32 @@ static void cache_drop(struct kunit *test)
/* Ensure the data is read from the cache */
for (i = 0; i < BLOCK_TEST_SIZE; i++)
- data->read[i] = false;
- KUNIT_EXPECT_EQ(test, 0, regmap_bulk_read(map, 0, rval,
+ data->read[param->from_reg + i] = false;
+ KUNIT_EXPECT_EQ(test, 0, regmap_bulk_read(map, param->from_reg, rval,
BLOCK_TEST_SIZE));
for (i = 0; i < BLOCK_TEST_SIZE; i++) {
- KUNIT_EXPECT_FALSE(test, data->read[i]);
- data->read[i] = false;
+ KUNIT_EXPECT_FALSE(test, data->read[param->from_reg + i]);
+ data->read[param->from_reg + i] = false;
}
- KUNIT_EXPECT_MEMEQ(test, data->vals, rval, sizeof(rval));
+ KUNIT_EXPECT_MEMEQ(test, &data->vals[param->from_reg], rval, sizeof(rval));
/* Drop some registers */
- KUNIT_EXPECT_EQ(test, 0, regcache_drop_region(map, 3, 5));
+ KUNIT_EXPECT_EQ(test, 0, regcache_drop_region(map, param->from_reg + 3,
+ param->from_reg + 5));
/* Reread and check only the dropped registers hit the device. */
- KUNIT_EXPECT_EQ(test, 0, regmap_bulk_read(map, 0, rval,
+ KUNIT_EXPECT_EQ(test, 0, regmap_bulk_read(map, param->from_reg, rval,
BLOCK_TEST_SIZE));
for (i = 0; i < BLOCK_TEST_SIZE; i++)
- KUNIT_EXPECT_EQ(test, data->read[i], i >= 3 && i <= 5);
- KUNIT_EXPECT_MEMEQ(test, data->vals, rval, sizeof(rval));
+ KUNIT_EXPECT_EQ(test, data->read[param->from_reg + i], i >= 3 && i <= 5);
+ KUNIT_EXPECT_MEMEQ(test, &data->vals[param->from_reg], rval, sizeof(rval));
regmap_exit(map);
}
static void cache_present(struct kunit *test)
{
+ const struct regmap_test_param *param = test->param_value;
struct regmap *map;
struct regmap_config config;
struct regmap_ram_data *data;
@@ -886,23 +909,23 @@ static void cache_present(struct kunit *test)
return;
for (i = 0; i < BLOCK_TEST_SIZE; i++)
- data->read[i] = false;
+ data->read[param->from_reg + i] = false;
/* No defaults so no registers cached. */
for (i = 0; i < BLOCK_TEST_SIZE; i++)
- KUNIT_ASSERT_FALSE(test, regcache_reg_cached(map, i));
+ KUNIT_ASSERT_FALSE(test, regcache_reg_cached(map, param->from_reg + i));
/* We didn't trigger any reads */
for (i = 0; i < BLOCK_TEST_SIZE; i++)
- KUNIT_ASSERT_FALSE(test, data->read[i]);
+ KUNIT_ASSERT_FALSE(test, data->read[param->from_reg + i]);
/* Fill the cache */
for (i = 0; i < BLOCK_TEST_SIZE; i++)
- KUNIT_EXPECT_EQ(test, 0, regmap_read(map, i, &val));
+ KUNIT_EXPECT_EQ(test, 0, regmap_read(map, param->from_reg + i, &val));
/* Now everything should be cached */
for (i = 0; i < BLOCK_TEST_SIZE; i++)
- KUNIT_ASSERT_TRUE(test, regcache_reg_cached(map, i));
+ KUNIT_ASSERT_TRUE(test, regcache_reg_cached(map, param->from_reg + i));
regmap_exit(map);
}
--
2.39.2
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