1*6e11374bSAthira Rajeev // SPDX-License-Identifier: GPL-2.0-only
2*6e11374bSAthira Rajeev /*
3*6e11374bSAthira Rajeev  * Copyright 2022, Athira Rajeev, IBM Corp.
4*6e11374bSAthira Rajeev  */
5*6e11374bSAthira Rajeev 
6*6e11374bSAthira Rajeev #include <stdio.h>
7*6e11374bSAthira Rajeev #include <stdlib.h>
8*6e11374bSAthira Rajeev 
9*6e11374bSAthira Rajeev #include "../event.h"
10*6e11374bSAthira Rajeev #include "misc.h"
11*6e11374bSAthira Rajeev #include "utils.h"
12*6e11374bSAthira Rajeev 
13*6e11374bSAthira Rajeev extern void thirty_two_instruction_loop(int loops);
14*6e11374bSAthira Rajeev 
15*6e11374bSAthira Rajeev /*
16*6e11374bSAthira Rajeev  * A perf sampling test for mmcr0
17*6e11374bSAthira Rajeev  * fields: fc56_pmc56
18*6e11374bSAthira Rajeev  */
mmcr0_fc56_pmc56(void)19*6e11374bSAthira Rajeev static int mmcr0_fc56_pmc56(void)
20*6e11374bSAthira Rajeev {
21*6e11374bSAthira Rajeev 	struct event event;
22*6e11374bSAthira Rajeev 	u64 *intr_regs;
23*6e11374bSAthira Rajeev 
24*6e11374bSAthira Rajeev 	 /* Check for platform support for the test */
25*6e11374bSAthira Rajeev 	SKIP_IF(check_pvr_for_sampling_tests());
26*6e11374bSAthira Rajeev 
27*6e11374bSAthira Rajeev 	/* Init the event for the sampling test */
28*6e11374bSAthira Rajeev 	event_init_sampling(&event, 0x500fa);
29*6e11374bSAthira Rajeev 	event.attr.sample_regs_intr = platform_extended_mask;
30*6e11374bSAthira Rajeev 	FAIL_IF(event_open(&event));
31*6e11374bSAthira Rajeev 	event.mmap_buffer = event_sample_buf_mmap(event.fd, 1);
32*6e11374bSAthira Rajeev 
33*6e11374bSAthira Rajeev 	FAIL_IF(event_enable(&event));
34*6e11374bSAthira Rajeev 
35*6e11374bSAthira Rajeev 	/* workload to make the event overflow */
36*6e11374bSAthira Rajeev 	thirty_two_instruction_loop(10000);
37*6e11374bSAthira Rajeev 
38*6e11374bSAthira Rajeev 	FAIL_IF(event_disable(&event));
39*6e11374bSAthira Rajeev 
40*6e11374bSAthira Rajeev 	/* Check for sample count */
41*6e11374bSAthira Rajeev 	FAIL_IF(!collect_samples(event.mmap_buffer));
42*6e11374bSAthira Rajeev 
43*6e11374bSAthira Rajeev 	intr_regs = get_intr_regs(&event, event.mmap_buffer);
44*6e11374bSAthira Rajeev 
45*6e11374bSAthira Rajeev 	/* Check for intr_regs */
46*6e11374bSAthira Rajeev 	FAIL_IF(!intr_regs);
47*6e11374bSAthira Rajeev 
48*6e11374bSAthira Rajeev 	/* Verify that fc56 is not set in MMCR0 when using PMC5 */
49*6e11374bSAthira Rajeev 	FAIL_IF(get_mmcr0_fc56(get_reg_value(intr_regs, "MMCR0"), 5));
50*6e11374bSAthira Rajeev 
51*6e11374bSAthira Rajeev 	event_close(&event);
52*6e11374bSAthira Rajeev 	return 0;
53*6e11374bSAthira Rajeev }
54*6e11374bSAthira Rajeev 
main(void)55*6e11374bSAthira Rajeev int main(void)
56*6e11374bSAthira Rajeev {
57*6e11374bSAthira Rajeev 	return test_harness(mmcr0_fc56_pmc56, "mmcr0_fc56_pmc56");
58*6e11374bSAthira Rajeev }
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