1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#include <sys/sunddi.h>
27#include <sys/cpupm.h>
28
29/*
30 * Initialize the field that will be used for reporting
31 * the supported_frequencies_Hz cpu_info kstat.
32 */
33void
34cpupm_set_supp_freqs(cpu_t *cp, int *speeds, uint_t nspeeds)
35{
36	char		*supp_freqs = NULL;
37	char		*sfptr;
38	uint64_t	*hzspeeds;
39	int		i;
40	int		j;
41#define	UINT64_MAX_STRING (sizeof ("18446744073709551615"))
42
43	if (speeds == NULL) {
44		cpu_set_supp_freqs(cp, supp_freqs);
45		return;
46	}
47
48	hzspeeds = kmem_zalloc(nspeeds * sizeof (uint64_t), KM_SLEEP);
49	for (i = nspeeds - 1, j = 0; i >= 0; i--, j++) {
50		hzspeeds[i] = CPUPM_SPEED_HZ(cp->cpu_type_info.pi_clock,
51		    speeds[j]);
52	}
53
54	supp_freqs = kmem_zalloc((UINT64_MAX_STRING * nspeeds), KM_SLEEP);
55	sfptr = supp_freqs;
56	for (i = 0; i < nspeeds; i++) {
57		if (i == nspeeds - 1) {
58			(void) sprintf(sfptr, "%"PRIu64, hzspeeds[i]);
59		} else {
60			(void) sprintf(sfptr, "%"PRIu64":", hzspeeds[i]);
61			sfptr = supp_freqs + strlen(supp_freqs);
62		}
63	}
64	cpu_set_supp_freqs(cp, supp_freqs);
65	kmem_free(supp_freqs, (UINT64_MAX_STRING * nspeeds));
66	kmem_free(hzspeeds, nspeeds * sizeof (uint64_t));
67}
68