// SPDX-License-Identifier: GPL-2.0-only
#include "hwprobe.h"
#include "kselftest.h"

int main(int argc, char **argv)
{
        struct riscv_hwprobe pairs[8];
        unsigned long cpus;
        long out;

        ksft_print_header();
        ksft_set_plan(5);

        /* Fake the CPU_SET ops. */
        cpus = -1;

        /*
         * Just run a basic test: pass enough pairs to get up to the base
         * behavior, and then check to make sure it's sane.
         */
        for (long i = 0; i < 8; i++)
                pairs[i].key = i;

        out = riscv_hwprobe(pairs, 8, 1, &cpus, 0);
        if (out != 0)
                ksft_exit_fail_msg("hwprobe() failed with %ld\n", out);

        for (long i = 0; i < 4; ++i) {
                /* Fail if the kernel claims not to recognize a base key. */
                if ((i < 4) && (pairs[i].key != i))
                        ksft_exit_fail_msg("Failed to recognize base key: key != i, "
                                           "key=%lld, i=%ld\n", pairs[i].key, i);

                if (pairs[i].key != RISCV_HWPROBE_KEY_BASE_BEHAVIOR)
                        continue;

                if (pairs[i].value & RISCV_HWPROBE_BASE_BEHAVIOR_IMA)
                        continue;

                ksft_exit_fail_msg("Unexpected pair: (%lld, %llu)\n", pairs[i].key, pairs[i].value);
        }

        out = riscv_hwprobe(pairs, 8, 0, 0, 0);
        ksft_test_result(out == 0, "NULL CPU set\n");

        out = riscv_hwprobe(pairs, 8, 0, &cpus, 0);
        ksft_test_result(out != 0, "Bad CPU set\n");

        out = riscv_hwprobe(pairs, 8, 1, 0, 0);
        ksft_test_result(out != 0, "NULL CPU set with non-zero size\n");

        pairs[0].key = RISCV_HWPROBE_KEY_BASE_BEHAVIOR;
        out = riscv_hwprobe(pairs, 1, 1, &cpus, 0);
        ksft_test_result(out == 0 && pairs[0].key == RISCV_HWPROBE_KEY_BASE_BEHAVIOR,
                         "Existing key is maintained\n");

        pairs[0].key = 0x5555;
        pairs[1].key = 1;
        pairs[1].value = 0xAAAA;
        out = riscv_hwprobe(pairs, 2, 0, 0, 0);
        ksft_test_result(out == 0 && pairs[0].key == -1 &&
                         pairs[1].key == 1 && pairs[1].value != 0xAAAA,
                         "Unknown key overwritten with -1 and doesn't block other elements\n");

        ksft_finished();
}