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drm/xe/tests: Add GuC KLV printer test

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For completeness, add a simple test to exercise the KLV printer
to make sure it doesn't crash at least.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patch.msgid.link/20260711073608.7829-1-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2026-07-11 09:36:08 +02:00
parent e05f612ce7
commit af98b8f067
1 changed files with 41 additions and 0 deletions
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41
drivers/gpu/drm/xe/tests/xe_guc_klv_helpers_kunit.c
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@ -10,6 +10,11 @@
#define TEST_GROUP_KEY (GUC_KLV_RESERVED_RANGE_START + 0x3f0)
#define TEST_PAD 0xdeadbeef
static bool fake_is_group_key(u16 key)
{
return is_reserved_key(key) && key >= TEST_GROUP_KEY;
}
static void test_count(struct kunit *test)
{
u32 value = 0x12345678;
@ -368,6 +373,41 @@ static void test_encode_object_basic(struct kunit *test)
obj_echo_encoder));
}
static void __drm_printfn_kunit(struct drm_printer *p, struct va_format *vaf)
{
struct kunit *test = p->arg;
kunit_info(test, "%pV", vaf);
}
static struct drm_printer drm_kunit_printer(void)
{
struct drm_printer p = {
.printfn = __drm_printfn_kunit,
.arg = kunit_get_current_test(),
};
return p;
}
static void test_print(struct kunit *test)
{
struct drm_printer p = drm_kunit_printer();
u32 zeros[] = { 0, 0, 0, /* padding */ };
u32 klvs[] = {
PREP_GUC_KLV(GUC_KLV_OPT_IN_FEATURE_EXT_CAT_ERR_TYPE_KEY, 0),
PREP_GUC_KLV(GUC_KLV_VF_CFG_NUM_CONTEXTS_KEY, 1), 1234,
PREP_GUC_KLV(GUC_KLV_VF_CFG_GGTT_SIZE_KEY, 2), 0x4000, 0x0123,
PREP_GUC_KLV(TEST_KEY, 3), 1, 2, 3,
PREP_GUC_KLV(TEST_GROUP_KEY, 5),
PREP_GUC_KLV(TEST_KEY + 1, 1), 1,
PREP_GUC_KLV(TEST_KEY + 2, 2), 1, 2,
};
kunit_activate_static_stub(test, is_group_key, fake_is_group_key);
xe_guc_klv_print(zeros, ARRAY_SIZE(zeros), &p);
xe_guc_klv_print(klvs, ARRAY_SIZE(klvs), &p);
}
static struct kunit_case guc_klv_helpers_test_cases[] = {
KUNIT_CASE(test_count),
KUNIT_CASE(test_encode_u32),
@ -377,6 +417,7 @@ static struct kunit_case guc_klv_helpers_test_cases[] = {
KUNIT_CASE(test_encode_object_klv),
KUNIT_CASE(test_encode_object_nested),
KUNIT_CASE(test_encode_object_basic),
KUNIT_CASE(test_print),
{}
};