1 // SPDX-License-Identifier: GPL-2.0-only
2 #include "hwprobe.h"
3 #include "../../kselftest.h"
4
5 int main(int argc, char **argv)
6 {
7 struct riscv_hwprobe pairs[8];
8 unsigned long cpus;
9 long out;
10
11 ksft_print_header();
12 ksft_set_plan(5);
13
14 /* Fake the CPU_SET ops. */
15 cpus = -1;
16
17 /*
18 * Just run a basic test: pass enough pairs to get up to the base
19 * behavior, and then check to make sure it's sane.
20 */
21 for (long i = 0; i < 8; i++)
22 pairs[i].key = i;
23
24 out = riscv_hwprobe(pairs, 8, 1, &cpus, 0);
25 if (out != 0)
26 ksft_exit_fail_msg("hwprobe() failed with %ld\n", out);
27
28 for (long i = 0; i < 4; ++i) {
29 /* Fail if the kernel claims not to recognize a base key. */
30 if ((i < 4) && (pairs[i].key != i))
31 ksft_exit_fail_msg("Failed to recognize base key: key != i, "
32 "key=%lld, i=%ld\n", pairs[i].key, i);
33
34 if (pairs[i].key != RISCV_HWPROBE_KEY_BASE_BEHAVIOR)
35 continue;
36
37 if (pairs[i].value & RISCV_HWPROBE_BASE_BEHAVIOR_IMA)
38 continue;
39
40 ksft_exit_fail_msg("Unexpected pair: (%lld, %llu)\n", pairs[i].key, pairs[i].value);
41 }
42
43 out = riscv_hwprobe(pairs, 8, 0, 0, 0);
44 ksft_test_result(out == 0, "NULL CPU set\n");
45
46 out = riscv_hwprobe(pairs, 8, 0, &cpus, 0);
47 ksft_test_result(out != 0, "Bad CPU set\n");
48
49 out = riscv_hwprobe(pairs, 8, 1, 0, 0);
50 ksft_test_result(out != 0, "NULL CPU set with non-zero size\n");
51
52 pairs[0].key = RISCV_HWPROBE_KEY_BASE_BEHAVIOR;
53 out = riscv_hwprobe(pairs, 1, 1, &cpus, 0);
54 ksft_test_result(out == 0 && pairs[0].key == RISCV_HWPROBE_KEY_BASE_BEHAVIOR,
55 "Existing key is maintained\n");
56
57 pairs[0].key = 0x5555;
58 pairs[1].key = 1;
59 pairs[1].value = 0xAAAA;
60 out = riscv_hwprobe(pairs, 2, 0, 0, 0);
61 ksft_test_result(out == 0 && pairs[0].key == -1 &&
62 pairs[1].key == 1 && pairs[1].value != 0xAAAA,
63 "Unknown key overwritten with -1 and doesn't block other elements\n");
64
65 ksft_finished();
66 }
67
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.