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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 "misc.h"
#include "utils.h"
/*
* Primary PMU event used here is PM_MRK_INST_CMPL (0x401e0)
* Threshold event selection used is issue to complete for cycles
* Sampling criteria is Load only sampling
*/
#define p9_EventCode 0x13E35340401e0
#define p10_EventCode 0x35340401e0
extern void thirty_two_instruction_loop_with_ll_sc(u64 loops, u64 *ll_sc_target);
/* A perf sampling test to test mmcra fields */
static int mmcra_thresh_cmp(void)
{
struct event event;
u64 *intr_regs;
u64 dummy;
/* Check for platform support for the test */
SKIP_IF(check_pvr_for_sampling_tests());
/* Skip for comapt mode */
SKIP_IF(check_for_compat_mode());
/* Init the event for the sampling test */
if (!have_hwcap2(PPC_FEATURE2_ARCH_3_1)) {
event_init_sampling(&event, p9_EventCode);
} else {
event_init_sampling(&event, p10_EventCode);
event.attr.config1 = 1000;
}
event.attr.sample_regs_intr = platform_extended_mask;
FAIL_IF(event_open(&event));
event.mmap_buffer = event_sample_buf_mmap(event.fd, 1);
FAIL_IF(event_enable(&event));
/* workload to make the event overflow */
thirty_two_instruction_loop_with_ll_sc(1000000, &dummy);
FAIL_IF(event_disable(&event));
/* Check for sample count */
FAIL_IF(!collect_samples(event.mmap_buffer));
intr_regs = get_intr_regs(&event, event.mmap_buffer);
/* Check for intr_regs */
FAIL_IF(!intr_regs);
/* Verify that thresh cmp match with the corresponding event code fields */
FAIL_IF(get_thresh_cmp_val(event) !=
get_mmcra_thd_cmp(get_reg_value(intr_regs, "MMCRA"), 4));
event_close(&event);
return 0;
}
int main(void)
{
FAIL_IF(test_harness(mmcra_thresh_cmp, "mmcra_thresh_cmp"));
}
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