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drm/xe: Introduce IF_ARGS macro utility

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We want to extend our macro-based KLV list definitions with new
information about the version from which given KLV is supported.
Add utility IF_ARGS macro that can be used in code generators to
emit different code based on the presence of additional arguments.

Introduce macro itself and extend our kunit tests to cover it.
We will use this macro in next patch.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Acked-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20251217224018.3490-1-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko
2025-12-17 23:40:18 +01:00
parent 2f9405aaa4
commit ce59717736
2 changed files with 81 additions and 0 deletions
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54
drivers/gpu/drm/xe/tests/xe_args_test.c
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@@ -78,6 +78,24 @@ static void pick_arg_example(struct kunit *test)
#undef buz
}
static void if_args_example(struct kunit *test)
{
enum { Z = 1, Q };
#define foo X, Y
#define bar IF_ARGS(Z, Q, foo)
#define buz IF_ARGS(Z, Q, DROP_FIRST_ARG(FIRST_ARG(foo)))
KUNIT_EXPECT_EQ(test, bar, Z);
KUNIT_EXPECT_EQ(test, buz, Q);
KUNIT_EXPECT_STREQ(test, __stringify(bar), "Z");
KUNIT_EXPECT_STREQ(test, __stringify(buz), "Q");
#undef foo
#undef bar
#undef buz
}
static void sep_comma_example(struct kunit *test)
{
#define foo(f) f(X) f(Y) f(Z) f(Q)
@@ -198,6 +216,40 @@ static void last_arg_test(struct kunit *test)
KUNIT_EXPECT_STREQ(test, __stringify(LAST_ARG(MAX_ARGS)), "-12");
}
static void if_args_test(struct kunit *test)
{
bool with_args = true;
bool no_args = false;
enum { X = 100 };
KUNIT_EXPECT_TRUE(test, IF_ARGS(true, false, FOO_ARGS));
KUNIT_EXPECT_FALSE(test, IF_ARGS(true, false, NO_ARGS));
KUNIT_EXPECT_TRUE(test, CONCATENATE(IF_ARGS(with, no, FOO_ARGS), _args));
KUNIT_EXPECT_FALSE(test, CONCATENATE(IF_ARGS(with, no, NO_ARGS), _args));
KUNIT_EXPECT_STREQ(test, __stringify(IF_ARGS(yes, no, FOO_ARGS)), "yes");
KUNIT_EXPECT_STREQ(test, __stringify(IF_ARGS(yes, no, NO_ARGS)), "no");
KUNIT_EXPECT_EQ(test, IF_ARGS(CALL_ARGS(COUNT_ARGS, FOO_ARGS), -1, FOO_ARGS), 4);
KUNIT_EXPECT_EQ(test, IF_ARGS(CALL_ARGS(COUNT_ARGS, FOO_ARGS), -1, NO_ARGS), -1);
KUNIT_EXPECT_EQ(test, IF_ARGS(CALL_ARGS(COUNT_ARGS, NO_ARGS), -1, FOO_ARGS), 0);
KUNIT_EXPECT_EQ(test, IF_ARGS(CALL_ARGS(COUNT_ARGS, NO_ARGS), -1, NO_ARGS), -1);
KUNIT_EXPECT_EQ(test,
CALL_ARGS(FIRST_ARG,
CALL_ARGS(CONCATENATE, IF_ARGS(FOO, MAX, FOO_ARGS), _ARGS)), X);
KUNIT_EXPECT_EQ(test,
CALL_ARGS(FIRST_ARG,
CALL_ARGS(CONCATENATE, IF_ARGS(FOO, MAX, NO_ARGS), _ARGS)), -1);
KUNIT_EXPECT_EQ(test,
CALL_ARGS(COUNT_ARGS,
CALL_ARGS(CONCATENATE, IF_ARGS(FOO, MAX, FOO_ARGS), _ARGS)), 4);
KUNIT_EXPECT_EQ(test,
CALL_ARGS(COUNT_ARGS,
CALL_ARGS(CONCATENATE, IF_ARGS(FOO, MAX, NO_ARGS), _ARGS)), 12);
}
static struct kunit_case args_tests[] = {
KUNIT_CASE(count_args_test),
KUNIT_CASE(call_args_example),
@@ -209,6 +261,8 @@ static struct kunit_case args_tests[] = {
KUNIT_CASE(last_arg_example),
KUNIT_CASE(last_arg_test),
KUNIT_CASE(pick_arg_example),
KUNIT_CASE(if_args_example),
KUNIT_CASE(if_args_test),
KUNIT_CASE(sep_comma_example),
{}
};