1*d5172f25SAthira Rajeev // SPDX-License-Identifier: GPL-2.0-only
2*d5172f25SAthira Rajeev /*
3*d5172f25SAthira Rajeev * Copyright 2022, Athira Rajeev, IBM Corp.
4*d5172f25SAthira Rajeev */
5*d5172f25SAthira Rajeev
6*d5172f25SAthira Rajeev #include <stdio.h>
7*d5172f25SAthira Rajeev #include <stdlib.h>
8*d5172f25SAthira Rajeev
9*d5172f25SAthira Rajeev #include "../event.h"
10*d5172f25SAthira Rajeev #include "misc.h"
11*d5172f25SAthira Rajeev #include "utils.h"
12*d5172f25SAthira Rajeev
13*d5172f25SAthira Rajeev extern void thirty_two_instruction_loop(int loops);
14*d5172f25SAthira Rajeev
15*d5172f25SAthira Rajeev /*
16*d5172f25SAthira Rajeev * A perf sampling test for mmcr0
17*d5172f25SAthira Rajeev * fields: fc56, pmc1ce.
18*d5172f25SAthira Rajeev */
mmcr0_fc56_pmc1ce(void)19*d5172f25SAthira Rajeev static int mmcr0_fc56_pmc1ce(void)
20*d5172f25SAthira Rajeev {
21*d5172f25SAthira Rajeev struct event event;
22*d5172f25SAthira Rajeev u64 *intr_regs;
23*d5172f25SAthira Rajeev
24*d5172f25SAthira Rajeev /* Check for platform support for the test */
25*d5172f25SAthira Rajeev SKIP_IF(check_pvr_for_sampling_tests());
26*d5172f25SAthira Rajeev
27*d5172f25SAthira Rajeev /* Init the event for the sampling test */
28*d5172f25SAthira Rajeev event_init_sampling(&event, 0x1001e);
29*d5172f25SAthira Rajeev event.attr.sample_regs_intr = platform_extended_mask;
30*d5172f25SAthira Rajeev FAIL_IF(event_open(&event));
31*d5172f25SAthira Rajeev event.mmap_buffer = event_sample_buf_mmap(event.fd, 1);
32*d5172f25SAthira Rajeev
33*d5172f25SAthira Rajeev FAIL_IF(event_enable(&event));
34*d5172f25SAthira Rajeev
35*d5172f25SAthira Rajeev /* workload to make the event overflow */
36*d5172f25SAthira Rajeev thirty_two_instruction_loop(10000);
37*d5172f25SAthira Rajeev
38*d5172f25SAthira Rajeev FAIL_IF(event_disable(&event));
39*d5172f25SAthira Rajeev
40*d5172f25SAthira Rajeev /* Check for sample count */
41*d5172f25SAthira Rajeev FAIL_IF(!collect_samples(event.mmap_buffer));
42*d5172f25SAthira Rajeev
43*d5172f25SAthira Rajeev intr_regs = get_intr_regs(&event, event.mmap_buffer);
44*d5172f25SAthira Rajeev
45*d5172f25SAthira Rajeev /* Check for intr_regs */
46*d5172f25SAthira Rajeev FAIL_IF(!intr_regs);
47*d5172f25SAthira Rajeev
48*d5172f25SAthira Rajeev /* Verify that fc56, pmc1ce fields are set in MMCR0 */
49*d5172f25SAthira Rajeev FAIL_IF(!get_mmcr0_fc56(get_reg_value(intr_regs, "MMCR0"), 1));
50*d5172f25SAthira Rajeev FAIL_IF(!get_mmcr0_pmc1ce(get_reg_value(intr_regs, "MMCR0"), 1));
51*d5172f25SAthira Rajeev
52*d5172f25SAthira Rajeev event_close(&event);
53*d5172f25SAthira Rajeev return 0;
54*d5172f25SAthira Rajeev }
55*d5172f25SAthira Rajeev
main(void)56*d5172f25SAthira Rajeev int main(void)
57*d5172f25SAthira Rajeev {
58*d5172f25SAthira Rajeev return test_harness(mmcr0_fc56_pmc1ce, "mmcr0_fc56_pmc1ce");
59*d5172f25SAthira Rajeev }
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