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https://github.com/ARM-software/arm-trusted-firmware.git
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1c65989e70
Add support for Arm Ethos-N NPU multi-device. The device tree parsing currently only supports one NPU device with multiple cores. To be able to support multi-device NPU configurations this patch adds support for having multiple NPU devices in the device tree. To be able to support multiple NPU devices in the SMC API, it has been changed in an incompatible way so the API version has been bumped. Signed-off-by: Laurent Carlier <laurent.carlier@arm.com> Change-Id: Ide279ce949bd06e8939268b9601c267e45f3edc3
62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/*
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* Copyright (c) 2021, Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef ETHOSN_H
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#define ETHOSN_H
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#include <lib/smccc.h>
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/* Function numbers */
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#define ETHOSN_FNUM_VERSION U(0x50)
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#define ETHOSN_FNUM_IS_SEC U(0x51)
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#define ETHOSN_FNUM_HARD_RESET U(0x52)
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#define ETHOSN_FNUM_SOFT_RESET U(0x53)
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/* 0x54-0x5F reserved for future use */
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/* SMC64 function IDs */
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#define ETHOSN_FID_64(func_num) U(0xC2000000 | func_num)
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#define ETHOSN_FID_VERSION_64 ETHOSN_FID_64(ETHOSN_FNUM_VERSION)
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#define ETHOSN_FID_IS_SEC_64 ETHOSN_FID_64(ETHOSN_FNUM_IS_SEC)
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#define ETHOSN_FID_HARD_RESET_64 ETHOSN_FID_64(ETHOSN_FNUM_HARD_RESET)
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#define ETHOSN_FID_SOFT_RESET_64 ETHOSN_FID_64(ETHOSN_FNUM_SOFT_RESET)
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/* SMC32 function IDs */
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#define ETHOSN_FID_32(func_num) U(0x82000000 | func_num)
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#define ETHOSN_FID_VERSION_32 ETHOSN_FID_32(ETHOSN_FNUM_VERSION)
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#define ETHOSN_FID_IS_SEC_32 ETHOSN_FID_32(ETHOSN_FNUM_IS_SEC)
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#define ETHOSN_FID_HARD_RESET_32 ETHOSN_FID_32(ETHOSN_FNUM_HARD_RESET)
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#define ETHOSN_FID_SOFT_RESET_32 ETHOSN_FID_32(ETHOSN_FNUM_SOFT_RESET)
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#define ETHOSN_NUM_SMC_CALLS 8
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/* Macro to identify function calls */
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#define ETHOSN_FID_MASK U(0xFFF0)
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#define ETHOSN_FID_VALUE U(0x50)
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#define is_ethosn_fid(_fid) (((_fid) & ETHOSN_FID_MASK) == ETHOSN_FID_VALUE)
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/* Service version */
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#define ETHOSN_VERSION_MAJOR U(1)
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#define ETHOSN_VERSION_MINOR U(0)
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/* Return codes for function calls */
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#define ETHOSN_SUCCESS 0
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#define ETHOSN_NOT_SUPPORTED -1
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/* -2 Reserved for NOT_REQUIRED */
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/* -3 Reserved for INVALID_PARAMETER */
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#define ETHOSN_FAILURE -4
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#define ETHOSN_UNKNOWN_CORE_ADDRESS -5
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uintptr_t ethosn_smc_handler(uint32_t smc_fid,
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u_register_t core_addr,
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u_register_t x2,
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u_register_t x3,
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u_register_t x4,
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void *cookie,
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void *handle,
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u_register_t flags);
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#endif /* ETHOSN_H */
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