1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2022, Athira Rajeev, IBM Corp. 4 */ 5 6 #include <stdio.h> 7 #include <sys/prctl.h> 8 #include <limits.h> 9 #include "../event.h" 10 #include "../sampling_tests/misc.h" 11 12 /* The data cache was reloaded from local core's L3 due to a demand load */ 13 #define EventCode_1 0x1340000001c040 14 /* PM_DATA_RADIX_PROCESS_L2_PTE_FROM_L2 */ 15 #define EventCode_2 0x14242 16 /* Event code with IFM, EBB, BHRB bits set in event code */ 17 #define EventCode_3 0xf00000000000001e 18 19 /* 20 * Some of the bits in the event code is 21 * reserved for specific platforms. 22 * Event code bits 52-59 are reserved in power9, 23 * whereas in power10, these are used for programming 24 * Monitor Mode Control Register 3 (MMCR3). 25 * Bit 9 in event code is reserved in power9, 26 * whereas it is used for programming "radix_scope_qual" 27 * bit 18 in Monitor Mode Control Register 1 (MMCR1). 28 * 29 * Testcase to ensure that using reserved bits in 30 * event code should cause event_open to fail. 31 */ 32 33 static int invalid_event_code(void) 34 { 35 struct event event; 36 37 /* Check for platform support for the test */ 38 SKIP_IF(platform_check_for_tests()); 39 40 /* 41 * Events using MMCR3 bits and radix scope qual bits 42 * should fail in power9 and should succeed in power10. 43 * Init the events and check for pass/fail in event open. 44 */ 45 if (have_hwcap2(PPC_FEATURE2_ARCH_3_1)) { 46 event_init(&event, EventCode_1); 47 FAIL_IF(event_open(&event)); 48 event_close(&event); 49 50 event_init(&event, EventCode_2); 51 FAIL_IF(event_open(&event)); 52 event_close(&event); 53 } else { 54 event_init(&event, EventCode_1); 55 FAIL_IF(!event_open(&event)); 56 57 event_init(&event, EventCode_2); 58 FAIL_IF(!event_open(&event)); 59 } 60 61 return 0; 62 } 63 64 int main(void) 65 { 66 return test_harness(invalid_event_code, "invalid_event_code"); 67 } 68