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/*
* 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.
*/
/*
* CPU power management driver support for sun4u.
*/
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/cpupm.h>
#include <sys/cpudrv_mach.h>
#include <sys/machsystm.h>
/*
* Change CPU speed.
*/
int
cpudrv_change_speed(cpudrv_devstate_t *cpudsp, cpudrv_pm_spd_t *new_spd)
{
xc_one(cpudsp->cpu_id, (xcfunc_t *)cpu_change_speed, \
(uint64_t)new_spd->speed, 0);
return (DDI_SUCCESS);
}
/*
* Determine the cpu_id for the CPU device.
*/
boolean_t
cpudrv_get_cpu_id(dev_info_t *dip, processorid_t *cpu_id)
{
return (dip_to_cpu_id(dip, cpu_id) == DDI_SUCCESS);
}
/*
* A noop for this machine type.
*/
/* ARGSUSED */
boolean_t
cpudrv_power_ready(cpu_t *cp)
{
return (B_TRUE);
}
/*
* A noop for this machine type.
*/
/* ARGSUSED */
boolean_t
cpudrv_is_governor_thread(cpudrv_pm_t *cpupm)
{
return (B_FALSE);
}
/*
* A noop for this machine type.
*/
/*ARGSUSED*/
boolean_t
cpudrv_mach_init(cpudrv_devstate_t *cpudsp)
{
return (B_TRUE);
}
/*
* On SPARC all instances support power management unless attach fails.
* In the case of attach failure, cpudrv_enabled will be false.
*/
/*ARGSUSED*/
boolean_t
cpudrv_is_enabled(cpudrv_devstate_t *cpudsp)
{
return (cpudrv_enabled);
}
void
cpudrv_set_supp_freqs(cpudrv_devstate_t *cpudsp)
{
int *speeds;
uint_t nspeeds;
CPUDRV_GET_SPEEDS(cpudsp, speeds, nspeeds);
if (nspeeds == 0)
return;
cpupm_set_supp_freqs(cpudsp->cp, speeds, nspeeds);
CPUDRV_FREE_SPEEDS(speeds, nspeeds);
}
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