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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2022, Kajol Jain, IBM Corp.
*/
#include <stdio.h>
#include <stdlib.h>
#include "../event.h"
#include "utils.h"
#include "../sampling_tests/misc.h"
/*
* Primary PMU events used here is PM_MRK_INST_CMPL (0x401e0) and
* PM_THRESH_MET (0x101ec)
* Threshold event selection used is issue to complete for cycles
* Sampling criteria is Load or Store only sampling
*/
#define p9_EventCode_1 0x13e35340401e0
#define p9_EventCode_2 0x17d34340101ec
#define p9_EventCode_3 0x13e35340101ec
#define p10_EventCode_1 0x35340401e0
#define p10_EventCode_2 0x35340101ec
/*
* Testcase for group constraint check of thresh_cmp bits which is
* used to program thresh compare field in Monitor Mode Control Register A
* (MMCRA: 9-18 bits for power9 and MMCRA: 8-18 bits for power10).
* All events in the group should match thresh compare bits otherwise
* event_open for the group will fail.
*/
static int group_constraint_thresh_cmp(void)
{
struct event event, leader;
/* Check for platform support for the test */
SKIP_IF(platform_check_for_tests());
if (have_hwcap2(PPC_FEATURE2_ARCH_3_1)) {
/* Init the events for the group contraint check for thresh_cmp bits */
event_init(&leader, p10_EventCode_1);
/* Add the thresh_cmp value for leader in config1 */
leader.attr.config1 = 1000;
FAIL_IF(event_open(&leader));
event_init(&event, p10_EventCode_2);
/* Add the different thresh_cmp value from the leader event in config1 */
event.attr.config1 = 2000;
/* Expected to fail as sibling and leader event request different thresh_cmp bits */
FAIL_IF(!event_open_with_group(&event, leader.fd));
event_close(&event);
/* Init the event for the group contraint thresh compare test */
event_init(&event, p10_EventCode_2);
/* Add the same thresh_cmp value for leader and sibling event in config1 */
event.attr.config1 = 1000;
/* Expected to succeed as sibling and leader event request same thresh_cmp bits */
FAIL_IF(event_open_with_group(&event, leader.fd));
event_close(&leader);
event_close(&event);
} else {
/* Init the events for the group contraint check for thresh_cmp bits */
event_init(&leader, p9_EventCode_1);
FAIL_IF(event_open(&leader));
event_init(&event, p9_EventCode_2);
/* Expected to fail as sibling and leader event request different thresh_cmp bits */
FAIL_IF(!event_open_with_group(&event, leader.fd));
event_close(&event);
/* Init the event for the group contraint thresh compare test */
event_init(&event, p9_EventCode_3);
/* Expected to succeed as sibling and leader event request same thresh_cmp bits */
FAIL_IF(event_open_with_group(&event, leader.fd));
event_close(&leader);
event_close(&event);
}
return 0;
}
int main(void)
{
return test_harness(group_constraint_thresh_cmp, "group_constraint_thresh_cmp");
}
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