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