1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright 2014, Michael Ellerman, IBM Corp.
4 */
5
6#include <stdio.h>
7#include <stdlib.h>
8#include <sys/ioctl.h>
9
10#include "ebb.h"
11
12
13/*
14 * Test counting multiple events using EBBs.
15 */
16int multi_counter(void)
17{
18	struct event events[6];
19	int i, group_fd;
20
21	SKIP_IF(!ebb_is_supported());
22
23	event_init_named(&events[0], 0x1001C, "PM_CMPLU_STALL_THRD");
24	event_init_named(&events[1], 0x2D016, "PM_CMPLU_STALL_FXU");
25	event_init_named(&events[2], 0x30006, "PM_CMPLU_STALL_OTHER_CMPL");
26	event_init_named(&events[3], 0x4000A, "PM_CMPLU_STALL");
27	event_init_named(&events[4], 0x600f4, "PM_RUN_CYC");
28	event_init_named(&events[5], 0x500fa, "PM_RUN_INST_CMPL");
29
30	event_leader_ebb_init(&events[0]);
31	for (i = 1; i < 6; i++)
32		event_ebb_init(&events[i]);
33
34	group_fd = -1;
35	for (i = 0; i < 6; i++) {
36		events[i].attr.exclude_kernel = 1;
37		events[i].attr.exclude_hv = 1;
38		events[i].attr.exclude_idle = 1;
39
40		FAIL_IF(event_open_with_group(&events[i], group_fd));
41		if (group_fd == -1)
42			group_fd = events[0].fd;
43	}
44
45	ebb_enable_pmc_counting(1);
46	ebb_enable_pmc_counting(2);
47	ebb_enable_pmc_counting(3);
48	ebb_enable_pmc_counting(4);
49	ebb_enable_pmc_counting(5);
50	ebb_enable_pmc_counting(6);
51	setup_ebb_handler(standard_ebb_callee);
52
53	FAIL_IF(ioctl(events[0].fd, PERF_EVENT_IOC_ENABLE, PERF_IOC_FLAG_GROUP));
54	FAIL_IF(event_read(&events[0]));
55
56	ebb_global_enable();
57
58	mtspr(SPRN_PMC1, pmc_sample_period(sample_period));
59	mtspr(SPRN_PMC2, pmc_sample_period(sample_period));
60	mtspr(SPRN_PMC3, pmc_sample_period(sample_period));
61	mtspr(SPRN_PMC4, pmc_sample_period(sample_period));
62	mtspr(SPRN_PMC5, pmc_sample_period(sample_period));
63	mtspr(SPRN_PMC6, pmc_sample_period(sample_period));
64
65	while (ebb_state.stats.ebb_count < 50) {
66		FAIL_IF(core_busy_loop());
67		FAIL_IF(ebb_check_mmcr0());
68	}
69
70	ebb_global_disable();
71	ebb_freeze_pmcs();
72
73	dump_ebb_state();
74
75	for (i = 0; i < 6; i++)
76		event_close(&events[i]);
77
78	FAIL_IF(ebb_state.stats.ebb_count == 0);
79
80	return 0;
81}
82
83int main(void)
84{
85	return test_harness(multi_counter, "multi_counter");
86}
87