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/*
* Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __PSCI_COMPAT_H__
#define __PSCI_COMPAT_H__
#include <arch.h>
#include <platform_def.h>
#ifndef __ASSEMBLY__
/*
* The below declarations are to enable compatibility for the platform ports
* using the old platform interface and psci helpers.
*/
#define PLAT_MAX_PWR_LVL PLATFORM_MAX_AFFLVL
#define PLAT_NUM_PWR_DOMAINS PLATFORM_NUM_AFFS
/*******************************************************************************
* PSCI affinity related constants. An affinity instance could
* be present or absent physically to cater for asymmetric topologies.
******************************************************************************/
#define PSCI_AFF_ABSENT 0x0
#define PSCI_AFF_PRESENT 0x1
#define PSCI_STATE_ON 0x0
#define PSCI_STATE_OFF 0x1
#define PSCI_STATE_ON_PENDING 0x2
#define PSCI_STATE_SUSPEND 0x3
/*
* Using the compatibility platform interfaces means that the local states
* used in psci_power_state_t need to only convey whether its power down
* or standby state. The onus is on the platform port to do the right thing
* including the state coordination in case multiple power down states are
* involved. Hence if we assume 3 generic states viz, run, standby and
* power down, we can assign 1 and 2 to standby and power down respectively.
*/
#define PLAT_MAX_RET_STATE 1
#define PLAT_MAX_OFF_STATE 2
/*
* Macro to represent invalid affinity level within PSCI.
*/
#define PSCI_INVALID_DATA -1
#define psci_get_pstate_afflvl(pstate) psci_get_pstate_pwrlvl(pstate)
/*
* This array stores the 'power_state' requests of each CPU during
* CPU_SUSPEND and SYSTEM_SUSPEND which will be populated by the
* compatibility layer when appropriate platform hooks are invoked.
*/
extern unsigned int psci_power_state_compat[PLATFORM_CORE_COUNT];
/*******************************************************************************
* Structure populated by platform specific code to export routines which
* perform common low level pm functions
******************************************************************************/
typedef struct plat_pm_ops {
void (*affinst_standby)(unsigned int power_state);
int (*affinst_on)(unsigned long mpidr,
unsigned long sec_entrypoint,
unsigned int afflvl,
unsigned int state);
void (*affinst_off)(unsigned int afflvl, unsigned int state);
void (*affinst_suspend)(unsigned long sec_entrypoint,
unsigned int afflvl,
unsigned int state);
void (*affinst_on_finish)(unsigned int afflvl, unsigned int state);
void (*affinst_suspend_finish)(unsigned int afflvl,
unsigned int state);
void (*system_off)(void) __dead2;
void (*system_reset)(void) __dead2;
int (*validate_power_state)(unsigned int power_state);
int (*validate_ns_entrypoint)(unsigned long ns_entrypoint);
unsigned int (*get_sys_suspend_power_state)(void);
} plat_pm_ops_t;
/*******************************************************************************
* Function & Data prototypes to enable compatibility for older platform ports
******************************************************************************/
int psci_get_suspend_stateid_by_mpidr(unsigned long);
int psci_get_suspend_stateid(void);
int psci_get_suspend_powerstate(void);
unsigned int psci_get_max_phys_off_afflvl(void);
int psci_get_suspend_afflvl(void);
#endif /* ____ASSEMBLY__ */
#endif /* __PSCI_COMPAT_H__ */
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