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/*
* Copyright (c) 2021, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef RMI_SVC_H
#define RMI_SVC_H
#include <lib/smccc.h>
#include <lib/utils_def.h>
/* RMI error codes. */
#define RMI_SUCCESS 0
#define RMI_ERROR_NOT_SUPPORTED -1
#define RMI_ERROR_INVALID_ADDRESS -2
#define RMI_ERROR_INVALID_PAS -3
/* The macros below are used to identify RMI calls from the SMC function ID */
#define RMI_FNUM_MIN_VALUE U(0x00)
#define RMI_FNUM_MAX_VALUE U(0x20)
#define is_rmi_fid(fid) __extension__ ({ \
__typeof__(fid) _fid = (fid); \
((GET_SMC_NUM(_fid) >= RMI_FNUM_MIN_VALUE) && \
(GET_SMC_NUM(_fid) <= RMI_FNUM_MAX_VALUE) && \
(GET_SMC_TYPE(_fid) == SMC_TYPE_FAST) && \
(GET_SMC_CC(_fid) == SMC_64) && \
(GET_SMC_OEN(_fid) == OEN_ARM_START) && \
((_fid & 0x00FE0000) == 0U)); })
/* Get RMI fastcall std FID from function number */
#define RMI_FID(smc_cc, func_num) \
((SMC_TYPE_FAST << FUNCID_TYPE_SHIFT) | \
((smc_cc) << FUNCID_CC_SHIFT) | \
(OEN_ARM_START << FUNCID_OEN_SHIFT) | \
((func_num) << FUNCID_NUM_SHIFT))
/*
* SMC_RMM_INIT_COMPLETE is the only function in the RMI that originates from
* the Realm world and is handled by the RMMD. The remaining functions are
* always invoked by the Normal world, forwarded by RMMD and handled by the
* RMM
*/
#define RMI_FNUM_REQ_COMPLETE U(0x10)
#define RMI_FNUM_VERSION_REQ U(0x00)
#define RMI_FNUM_GRAN_NS_REALM U(0x01)
#define RMI_FNUM_GRAN_REALM_NS U(0x10)
/* RMI SMC64 FIDs handled by the RMMD */
#define RMI_RMM_REQ_COMPLETE RMI_FID(SMC_64, RMI_FNUM_REQ_COMPLETE)
#define RMI_RMM_REQ_VERSION RMI_FID(SMC_64, RMI_FNUM_VERSION_REQ)
#define RMI_RMM_GRANULE_DELEGATE RMI_FID(SMC_64, RMI_FNUM_GRAN_NS_REALM)
#define RMI_RMM_GRANULE_UNDELEGATE RMI_FID(SMC_64, RMI_FNUM_GRAN_REALM_NS)
#define RMI_ABI_VERSION_GET_MAJOR(_version) ((_version) >> 16)
#define RMI_ABI_VERSION_GET_MINOR(_version) ((_version) & 0xFFFF)
/* Reserve a special value for MBZ parameters. */
#define RMI_PARAM_MBZ U(0x0)
#endif /* RMI_SVC_H */
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