164 lines
6.6 KiB
C
164 lines
6.6 KiB
C
/*
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* Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __PSCI_H__
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#define __PSCI_H__
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/*******************************************************************************
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* Defines for runtime services func ids
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******************************************************************************/
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#define PSCI_VERSION 0x84000000
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#define PSCI_CPU_SUSPEND_AARCH32 0x84000001
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#define PSCI_CPU_SUSPEND_AARCH64 0xc4000001
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#define PSCI_CPU_OFF 0x84000002
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#define PSCI_CPU_ON_AARCH32 0x84000003
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#define PSCI_CPU_ON_AARCH64 0xc4000003
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#define PSCI_AFFINITY_INFO_AARCH32 0x84000004
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#define PSCI_AFFINITY_INFO_AARCH64 0xc4000004
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#define PSCI_MIG_AARCH32 0x84000005
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#define PSCI_MIG_AARCH64 0xc4000005
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#define PSCI_MIG_INFO_TYPE 0x84000006
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#define PSCI_MIG_INFO_UP_CPU_AARCH32 0x84000007
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#define PSCI_MIG_INFO_UP_CPU_AARCH64 0xc4000007
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#define PSCI_SYSTEM_OFF 0x84000008
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#define PSCI_SYSTEM_RESET 0x84000009
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/*******************************************************************************
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* PSCI Migrate and friends
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******************************************************************************/
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#define PSCI_TOS_UP_MIG_CAP 0
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#define PSCI_TOS_NOT_UP_MIG_CAP 1
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#define PSCI_TOS_NOT_PRESENT 2
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/*******************************************************************************
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* PSCI CPU_SUSPEND 'power_state' parameter specific defines
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******************************************************************************/
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#define PSTATE_ID_SHIFT 0
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#define PSTATE_TYPE_SHIFT 16
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#define PSTATE_AFF_LVL_SHIFT 24
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#define PSTATE_ID_MASK 0xffff
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#define PSTATE_TYPE_MASK 0x1
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#define PSTATE_AFF_LVL_MASK 0x3
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#define psci_get_pstate_id(pstate) (pstate >> PSTATE_ID_SHIFT) & \
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PSTATE_ID_MASK
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#define psci_get_pstate_type(pstate) (pstate >> PSTATE_TYPE_SHIFT) & \
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PSTATE_TYPE_MASK
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#define psci_get_pstate_afflvl(pstate) (pstate >> PSTATE_AFF_LVL_SHIFT) & \
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PSTATE_AFF_LVL_MASK
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/*******************************************************************************
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* PSCI version
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******************************************************************************/
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#define PSCI_MAJOR_VER (0 << 16)
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#define PSCI_MINOR_VER 0x2
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/*******************************************************************************
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* PSCI error codes
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******************************************************************************/
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#define PSCI_E_SUCCESS 0
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#define PSCI_E_NOT_SUPPORTED -1
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#define PSCI_E_INVALID_PARAMS -2
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#define PSCI_E_DENIED -3
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#define PSCI_E_ALREADY_ON -4
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#define PSCI_E_ON_PENDING -5
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#define PSCI_E_INTERN_FAIL -6
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#define PSCI_E_NOT_PRESENT -7
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#define PSCI_E_DISABLED -8
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/*******************************************************************************
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* PSCI affinity state related constants. An affinity instance could be present
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* or absent physically to cater for asymmetric topologies. If present then it
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* could in one of the 4 further defined states.
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******************************************************************************/
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#define PSCI_STATE_SHIFT 1
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#define PSCI_STATE_MASK 0x7
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#define psci_get_state(x) (x >> PSCI_STATE_SHIFT) & PSCI_STATE_MASK
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#define psci_set_state(x,y) x &= ~(PSCI_STATE_MASK << PSCI_STATE_SHIFT); \
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x |= (y & PSCI_STATE_MASK) << PSCI_STATE_SHIFT;
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#define PSCI_AFF_ABSENT 0x0
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#define PSCI_AFF_PRESENT 0x1
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#define PSCI_STATE_ON 0x0
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#define PSCI_STATE_OFF 0x1
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#define PSCI_STATE_ON_PENDING 0x2
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#define PSCI_STATE_SUSPEND 0x3
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/* Number of affinity instances whose state this psci imp. can track */
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#define PSCI_NUM_AFFS 32ull
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#ifndef __ASSEMBLY__
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/*******************************************************************************
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* Structure populated by platform specific code to export routines which
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* perform common low level pm functions
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******************************************************************************/
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typedef struct {
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int (*affinst_standby)(unsigned int);
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int (*affinst_on)(unsigned long,
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unsigned long,
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unsigned long,
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unsigned int,
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unsigned int);
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int (*affinst_off)(unsigned long, unsigned int, unsigned int);
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int (*affinst_suspend)(unsigned long,
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unsigned long,
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unsigned long,
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unsigned int,
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unsigned int);
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int (*affinst_on_finish)(unsigned long, unsigned int, unsigned int);
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int (*affinst_suspend_finish)(unsigned long,
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unsigned int,
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unsigned int);
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} plat_pm_ops;
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/*******************************************************************************
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* Function & Data prototypes
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******************************************************************************/
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extern unsigned int psci_version(void);
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extern int __psci_cpu_suspend(unsigned int, unsigned long, unsigned long);
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extern int __psci_cpu_off(void);
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extern int psci_affinity_info(unsigned long, unsigned int);
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extern int psci_migrate(unsigned int);
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extern unsigned int psci_migrate_info_type(void);
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extern unsigned long psci_migrate_info_up_cpu(void);
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extern void psci_system_off(void);
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extern void psci_system_reset(void);
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extern int psci_cpu_on(unsigned long,
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unsigned long,
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unsigned long);
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extern void psci_aff_on_finish_entry(void);
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extern void psci_aff_suspend_finish_entry(void);
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extern void psci_setup(unsigned long);
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#endif /*__ASSEMBLY__*/
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#endif /* __PSCI_H__ */
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