/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* AMD specific CPU power management support.
*/
#include <sys/x86_archext.h>
#include <sys/cpu_acpi.h>
#include <sys/pwrnow.h>
boolean_t
cpupm_amd_init(cpu_t *cp)
{
cpupm_mach_state_t *mach_state =
(cpupm_mach_state_t *)(cp->cpu_m.mcpu_pm_mach_state);
/* AMD? */
if (x86_vendor != X86_VENDOR_AMD)
return (B_FALSE);
/*
* If we support PowerNow! on this processor, then set the
* correct cma_ops for the processor.
*/
mach_state->ms_pstate.cma_ops = pwrnow_supported() ?
&pwrnow_ops : NULL;
return (B_TRUE);
}