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/*
* Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of ARM nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <bakery_lock.h>
#include <mmio.h>
#include "../../fvp_def.h"
#include "fvp_pwrc.h"
/*
* TODO: Someday there will be a generic power controller api. At the moment
* each platform has its own pwrc so just exporting functions is fine.
*/
static bakery_lock_t pwrc_lock __attribute__ ((section("tzfw_coherent_mem")));
unsigned int fvp_pwrc_get_cpu_wkr(unsigned long mpidr)
{
unsigned int rc = 0;
bakery_lock_get(mpidr, &pwrc_lock);
mmio_write_32(PWRC_BASE + PSYSR_OFF, (unsigned int) mpidr);
rc = PSYSR_WK(mmio_read_32(PWRC_BASE + PSYSR_OFF));
bakery_lock_release(mpidr, &pwrc_lock);
return rc;
}
unsigned int fvp_pwrc_read_psysr(unsigned long mpidr)
{
unsigned int rc = 0;
bakery_lock_get(mpidr, &pwrc_lock);
mmio_write_32(PWRC_BASE + PSYSR_OFF, (unsigned int) mpidr);
rc = mmio_read_32(PWRC_BASE + PSYSR_OFF);
bakery_lock_release(mpidr, &pwrc_lock);
return rc;
}
void fvp_pwrc_write_pponr(unsigned long mpidr)
{
bakery_lock_get(mpidr, &pwrc_lock);
mmio_write_32(PWRC_BASE + PPONR_OFF, (unsigned int) mpidr);
bakery_lock_release(mpidr, &pwrc_lock);
}
void fvp_pwrc_write_ppoffr(unsigned long mpidr)
{
bakery_lock_get(mpidr, &pwrc_lock);
mmio_write_32(PWRC_BASE + PPOFFR_OFF, (unsigned int) mpidr);
bakery_lock_release(mpidr, &pwrc_lock);
}
void fvp_pwrc_set_wen(unsigned long mpidr)
{
bakery_lock_get(mpidr, &pwrc_lock);
mmio_write_32(PWRC_BASE + PWKUPR_OFF,
(unsigned int) (PWKUPR_WEN | mpidr));
bakery_lock_release(mpidr, &pwrc_lock);
}
void fvp_pwrc_clr_wen(unsigned long mpidr)
{
bakery_lock_get(mpidr, &pwrc_lock);
mmio_write_32(PWRC_BASE + PWKUPR_OFF,
(unsigned int) mpidr);
bakery_lock_release(mpidr, &pwrc_lock);
}
void fvp_pwrc_write_pcoffr(unsigned long mpidr)
{
bakery_lock_get(mpidr, &pwrc_lock);
mmio_write_32(PWRC_BASE + PCOFFR_OFF, (unsigned int) mpidr);
bakery_lock_release(mpidr, &pwrc_lock);
}
/* Nothing else to do here apart from initializing the lock */
int fvp_pwrc_setup(void)
{
bakery_lock_init(&pwrc_lock);
return 0;
}
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