1// SPDX-License-Identifier: GPL-2.0
2#include <sys/types.h>
3#include <errno.h>
4#include <unistd.h>
5#include <stdio.h>
6#include <stdlib.h>
7#include <string.h>
8#include <linux/stringify.h>
9#include "header.h"
10#include "utils_header.h"
11#include "metricgroup.h"
12#include <api/fs/fs.h>
13
14int
15get_cpuid(char *buffer, size_t sz)
16{
17	unsigned long pvr;
18	int nb;
19
20	pvr = mfspr(SPRN_PVR);
21
22	nb = scnprintf(buffer, sz, "%lu,%lu$", PVR_VER(pvr), PVR_REV(pvr));
23
24	/* look for end marker to ensure the entire data fit */
25	if (strchr(buffer, '$')) {
26		buffer[nb-1] = '\0';
27		return 0;
28	}
29	return ENOBUFS;
30}
31
32char *
33get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
34{
35	char *bufp;
36
37	if (asprintf(&bufp, "0x%.8lx", mfspr(SPRN_PVR)) < 0)
38		bufp = NULL;
39
40	return bufp;
41}
42
43int arch_get_runtimeparam(const struct pmu_metric *pm)
44{
45	int count;
46	char path[PATH_MAX] = "/devices/hv_24x7/interface/";
47
48	strcat(path, pm->aggr_mode == PerChip ? "sockets" : "coresperchip");
49	return sysfs__read_int(path, &count) < 0 ? 1 : count;
50}
51