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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2022, Madhavan Srinivasan, IBM Corp.
*/
#include <stdio.h>
#include <stdlib.h>
#include "../event.h"
#include "misc.h"
#include "utils.h"
/* All successful D-side store dispatches for this thread */
#define EventCode 0x010000046080
#define MALLOC_SIZE (0x10000 * 10) /* Ought to be enough .. */
/*
* A perf sampling test for mmcr2
* fields : l2l3
*/
static int mmcr2_l2l3(void)
{
struct event event;
u64 *intr_regs;
char *p;
int i;
/* Check for platform support for the test */
SKIP_IF(check_pvr_for_sampling_tests());
SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_1));
/* Init the event for the sampling test */
event_init_sampling(&event, EventCode);
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 */
p = malloc(MALLOC_SIZE);
FAIL_IF(!p);
for (i = 0; i < MALLOC_SIZE; i += 0x10000)
p[i] = i;
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 l2l3 field of MMCR2 match with
* corresponding event code field
*/
FAIL_IF(EV_CODE_EXTRACT(event.attr.config, l2l3) !=
get_mmcr2_l2l3(get_reg_value(intr_regs, "MMCR2"), 4));
event_close(&event);
free(p);
return 0;
}
int main(void)
{
return test_harness(mmcr2_l2l3, "mmcr2_l2l3");
}
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