1 // SPDX-License-Identifier: GPL-2.0+ 1 // SPDX-License-Identifier: GPL-2.0+
2 /* 2 /*
3 * Test cases for functions and macros in bits 3 * Test cases for functions and macros in bits.h
4 */ 4 */
5 5
6 #include <kunit/test.h> 6 #include <kunit/test.h>
7 #include <linux/bits.h> 7 #include <linux/bits.h>
8 8
9 9
10 static void genmask_test(struct kunit *test) 10 static void genmask_test(struct kunit *test)
11 { 11 {
12 KUNIT_EXPECT_EQ(test, 1ul, GENMASK(0, 12 KUNIT_EXPECT_EQ(test, 1ul, GENMASK(0, 0));
13 KUNIT_EXPECT_EQ(test, 3ul, GENMASK(1, 13 KUNIT_EXPECT_EQ(test, 3ul, GENMASK(1, 0));
14 KUNIT_EXPECT_EQ(test, 6ul, GENMASK(2, 14 KUNIT_EXPECT_EQ(test, 6ul, GENMASK(2, 1));
15 KUNIT_EXPECT_EQ(test, 0xFFFFFFFFul, GE 15 KUNIT_EXPECT_EQ(test, 0xFFFFFFFFul, GENMASK(31, 0));
16 16
17 #ifdef TEST_GENMASK_FAILURES 17 #ifdef TEST_GENMASK_FAILURES
18 /* these should fail compilation */ 18 /* these should fail compilation */
19 GENMASK(0, 1); 19 GENMASK(0, 1);
20 GENMASK(0, 10); 20 GENMASK(0, 10);
21 GENMASK(9, 10); 21 GENMASK(9, 10);
22 #endif 22 #endif
23 23
24 24
25 } 25 }
26 26
27 static void genmask_ull_test(struct kunit *tes 27 static void genmask_ull_test(struct kunit *test)
28 { 28 {
29 KUNIT_EXPECT_EQ(test, 1ull, GENMASK_UL 29 KUNIT_EXPECT_EQ(test, 1ull, GENMASK_ULL(0, 0));
30 KUNIT_EXPECT_EQ(test, 3ull, GENMASK_UL 30 KUNIT_EXPECT_EQ(test, 3ull, GENMASK_ULL(1, 0));
31 KUNIT_EXPECT_EQ(test, 0x000000ffffe000 31 KUNIT_EXPECT_EQ(test, 0x000000ffffe00000ull, GENMASK_ULL(39, 21));
32 KUNIT_EXPECT_EQ(test, 0xffffffffffffff 32 KUNIT_EXPECT_EQ(test, 0xffffffffffffffffull, GENMASK_ULL(63, 0));
33 33
34 #ifdef TEST_GENMASK_FAILURES 34 #ifdef TEST_GENMASK_FAILURES
35 /* these should fail compilation */ 35 /* these should fail compilation */
36 GENMASK_ULL(0, 1); 36 GENMASK_ULL(0, 1);
37 GENMASK_ULL(0, 10); 37 GENMASK_ULL(0, 10);
38 GENMASK_ULL(9, 10); 38 GENMASK_ULL(9, 10);
39 #endif 39 #endif
40 } 40 }
41 41
42 static void genmask_input_check_test(struct ku 42 static void genmask_input_check_test(struct kunit *test)
43 { 43 {
44 unsigned int x, y; 44 unsigned int x, y;
45 int z, w; 45 int z, w;
46 46
47 /* Unknown input */ 47 /* Unknown input */
48 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT 48 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(x, 0));
49 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT 49 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(0, x));
50 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT 50 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(x, y));
51 51
52 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT 52 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(z, 0));
53 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT 53 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(0, z));
54 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT 54 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(z, w));
55 55
56 /* Valid input */ 56 /* Valid input */
57 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT 57 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(1, 1));
58 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT 58 KUNIT_EXPECT_EQ(test, 0, GENMASK_INPUT_CHECK(39, 21));
59 } 59 }
60 60
61 61
62 static struct kunit_case bits_test_cases[] = { 62 static struct kunit_case bits_test_cases[] = {
63 KUNIT_CASE(genmask_test), 63 KUNIT_CASE(genmask_test),
64 KUNIT_CASE(genmask_ull_test), 64 KUNIT_CASE(genmask_ull_test),
65 KUNIT_CASE(genmask_input_check_test), 65 KUNIT_CASE(genmask_input_check_test),
66 {} 66 {}
67 }; 67 };
68 68
69 static struct kunit_suite bits_test_suite = { 69 static struct kunit_suite bits_test_suite = {
70 .name = "bits-test", 70 .name = "bits-test",
71 .test_cases = bits_test_cases, 71 .test_cases = bits_test_cases,
72 }; 72 };
73 kunit_test_suite(bits_test_suite); 73 kunit_test_suite(bits_test_suite);
74 74
75 MODULE_DESCRIPTION("Test cases for functions a <<
76 MODULE_LICENSE("GPL"); 75 MODULE_LICENSE("GPL");
77 76
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