1// SPDX-License-Identifier: GPL-2.0-only
2#include "hwprobe.h"
3#include "../../kselftest.h"
4
5int 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