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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2022, Athira Rajeev, IBM Corp.
*/
#include <stdio.h>
#include "../event.h"
#include "../sampling_tests/misc.h"
/*
* Testcase for reserved bits in Monitor Mode Control
* Register A (MMCRA) Random Sampling Mode (SM) value.
* As per Instruction Set Architecture (ISA), the values
* 0x5, 0x9, 0xD, 0x19, 0x1D, 0x1A, 0x1E are reserved
* for sampling mode field. Test that having these reserved
* bit values should cause event_open to fail.
* Input event code uses these sampling bits along with
* 401e0 (PM_MRK_INST_CMPL).
*/
static int reserved_bits_mmcra_sample_elig_mode(void)
{
struct event event;
/* Check for platform support for the test */
SKIP_IF(platform_check_for_tests());
/* Skip for Generic compat PMU */
SKIP_IF(check_for_generic_compat_pmu());
/*
* MMCRA Random Sampling Mode (SM) values: 0x5
* 0x9, 0xD, 0x19, 0x1D, 0x1A, 0x1E is reserved.
* Expected to fail when using these reserved values.
*/
event_init(&event, 0x50401e0);
FAIL_IF(!event_open(&event));
event_init(&event, 0x90401e0);
FAIL_IF(!event_open(&event));
event_init(&event, 0xD0401e0);
FAIL_IF(!event_open(&event));
event_init(&event, 0x190401e0);
FAIL_IF(!event_open(&event));
event_init(&event, 0x1D0401e0);
FAIL_IF(!event_open(&event));
event_init(&event, 0x1A0401e0);
FAIL_IF(!event_open(&event));
event_init(&event, 0x1E0401e0);
FAIL_IF(!event_open(&event));
/*
* MMCRA Random Sampling Mode (SM) value 0x10
* is reserved in power10 and 0xC is reserved in
* power9.
*/
if (PVR_VER(mfspr(SPRN_PVR)) == POWER10) {
event_init(&event, 0x100401e0);
FAIL_IF(!event_open(&event));
} else if (PVR_VER(mfspr(SPRN_PVR)) == POWER9) {
event_init(&event, 0xC0401e0);
FAIL_IF(!event_open(&event));
}
return 0;
}
int main(void)
{
return test_harness(reserved_bits_mmcra_sample_elig_mode,
"reserved_bits_mmcra_sample_elig_mode");
}
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