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      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  */
     33 void
     34 cpupm_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