16e11374bSAthira Rajeev // SPDX-License-Identifier: GPL-2.0-only 26e11374bSAthira Rajeev /* 36e11374bSAthira Rajeev * Copyright 2022, Athira Rajeev, IBM Corp. 46e11374bSAthira Rajeev */ 56e11374bSAthira Rajeev 66e11374bSAthira Rajeev #include <stdio.h> 76e11374bSAthira Rajeev #include <stdlib.h> 86e11374bSAthira Rajeev 96e11374bSAthira Rajeev #include "../event.h" 106e11374bSAthira Rajeev #include "misc.h" 116e11374bSAthira Rajeev #include "utils.h" 126e11374bSAthira Rajeev 136e11374bSAthira Rajeev extern void thirty_two_instruction_loop(int loops); 146e11374bSAthira Rajeev 156e11374bSAthira Rajeev /* 166e11374bSAthira Rajeev * A perf sampling test for mmcr0 176e11374bSAthira Rajeev * fields: fc56_pmc56 186e11374bSAthira Rajeev */ mmcr0_fc56_pmc56(void)196e11374bSAthira Rajeevstatic int mmcr0_fc56_pmc56(void) 206e11374bSAthira Rajeev { 216e11374bSAthira Rajeev struct event event; 226e11374bSAthira Rajeev u64 *intr_regs; 236e11374bSAthira Rajeev 246e11374bSAthira Rajeev /* Check for platform support for the test */ 256e11374bSAthira Rajeev SKIP_IF(check_pvr_for_sampling_tests()); 266e11374bSAthira Rajeev 276e11374bSAthira Rajeev /* Init the event for the sampling test */ 286e11374bSAthira Rajeev event_init_sampling(&event, 0x500fa); 296e11374bSAthira Rajeev event.attr.sample_regs_intr = platform_extended_mask; 306e11374bSAthira Rajeev FAIL_IF(event_open(&event)); 316e11374bSAthira Rajeev event.mmap_buffer = event_sample_buf_mmap(event.fd, 1); 326e11374bSAthira Rajeev 336e11374bSAthira Rajeev FAIL_IF(event_enable(&event)); 346e11374bSAthira Rajeev 356e11374bSAthira Rajeev /* workload to make the event overflow */ 366e11374bSAthira Rajeev thirty_two_instruction_loop(10000); 376e11374bSAthira Rajeev 386e11374bSAthira Rajeev FAIL_IF(event_disable(&event)); 396e11374bSAthira Rajeev 406e11374bSAthira Rajeev /* Check for sample count */ 416e11374bSAthira Rajeev FAIL_IF(!collect_samples(event.mmap_buffer)); 426e11374bSAthira Rajeev 436e11374bSAthira Rajeev intr_regs = get_intr_regs(&event, event.mmap_buffer); 446e11374bSAthira Rajeev 456e11374bSAthira Rajeev /* Check for intr_regs */ 466e11374bSAthira Rajeev FAIL_IF(!intr_regs); 476e11374bSAthira Rajeev 486e11374bSAthira Rajeev /* Verify that fc56 is not set in MMCR0 when using PMC5 */ 496e11374bSAthira Rajeev FAIL_IF(get_mmcr0_fc56(get_reg_value(intr_regs, "MMCR0"), 5)); 506e11374bSAthira Rajeev 516e11374bSAthira Rajeev event_close(&event); 526e11374bSAthira Rajeev return 0; 536e11374bSAthira Rajeev } 546e11374bSAthira Rajeev main(void)556e11374bSAthira Rajeevint main(void) 566e11374bSAthira Rajeev { 576e11374bSAthira Rajeev return test_harness(mmcr0_fc56_pmc56, "mmcr0_fc56_pmc56"); 586e11374bSAthira Rajeev } 59