// 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");
}