/*
 * Copyright 2020 Carlo Caione <ccaione@baylibre.com>
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#ifndef ZEPHYR_DRIVERS_PSCI_PSCI_H_
#define ZEPHYR_DRIVERS_PSCI_PSCI_H_

#include <zephyr/drivers/pm_cpu_ops/psci.h>

#ifdef CONFIG_64BIT
#define PSCI_FN_NATIVE(version, name)		PSCI_##version##_FN64_##name
#else
#define PSCI_FN_NATIVE(version, name)		PSCI_##version##_FN_##name
#endif

/* PSCI v0.2 interface */
#define PSCI_0_2_FN_BASE			0x84000000
#define PSCI_0_2_FN(n)				(PSCI_0_2_FN_BASE + (n))
#define PSCI_0_2_64BIT				0x40000000
#define PSCI_0_2_FN64_BASE			\
					(PSCI_0_2_FN_BASE + PSCI_0_2_64BIT)
#define PSCI_0_2_FN64(n)			(PSCI_0_2_FN64_BASE + (n))

#define PSCI_0_2_FN_PSCI_VERSION		PSCI_0_2_FN(0)
#define PSCI_0_2_FN_CPU_SUSPEND			PSCI_0_2_FN(1)
#define PSCI_0_2_FN_CPU_OFF			PSCI_0_2_FN(2)
#define PSCI_0_2_FN_CPU_ON			PSCI_0_2_FN(3)
#define PSCI_0_2_FN_AFFINITY_INFO		PSCI_0_2_FN(4)
#define PSCI_0_2_FN_MIGRATE			PSCI_0_2_FN(5)
#define PSCI_0_2_FN_MIGRATE_INFO_TYPE		PSCI_0_2_FN(6)
#define PSCI_0_2_FN_MIGRATE_INFO_UP_CPU		PSCI_0_2_FN(7)
#define PSCI_0_2_FN_SYSTEM_OFF			PSCI_0_2_FN(8)
#define PSCI_0_2_FN_SYSTEM_RESET		PSCI_0_2_FN(9)

#define PSCI_0_2_FN64_CPU_SUSPEND		PSCI_0_2_FN64(1)
#define PSCI_0_2_FN64_CPU_ON			PSCI_0_2_FN64(3)
#define PSCI_0_2_FN64_AFFINITY_INFO		PSCI_0_2_FN64(4)
#define PSCI_0_2_FN64_MIGRATE			PSCI_0_2_FN64(5)
#define PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU	PSCI_0_2_FN64(7)

/* PSCI return values (inclusive of all PSCI versions) */
#define PSCI_RET_SUCCESS			0
#define PSCI_RET_NOT_SUPPORTED			-1
#define PSCI_RET_INVALID_PARAMS			-2
#define PSCI_RET_DENIED				-3
#define PSCI_RET_ALREADY_ON			-4
#define PSCI_RET_ON_PENDING			-5
#define PSCI_RET_INTERNAL_FAILURE		-6
#define PSCI_RET_NOT_PRESENT			-7
#define PSCI_RET_DISABLED			-8
#define PSCI_RET_INVALID_ADDRESS		-9

typedef unsigned long (psci_fn)(unsigned long, unsigned long,
				unsigned long, unsigned long);

struct psci {
	enum arm_smccc_conduit conduit;
	psci_fn *invoke_psci_fn;
	uint32_t ver;
};

#endif /* ZEPHYR_DRIVERS_PSCI_PSCI_H_ */