194 lines
5.6 KiB
C
194 lines
5.6 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2015, Linaro Limited
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*/
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#ifndef __LINUX_ARM_SMCCC_H
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#define __LINUX_ARM_SMCCC_H
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#include <linux/const.h>
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/*
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* This file provides common defines for ARM SMC Calling Convention as
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* specified in
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* https://developer.arm.com/docs/den0028/latest
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*
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* This code is up-to-date with version DEN 0028 C
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*/
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#define ARM_SMCCC_STD_CALL _AC(0,U)
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#define ARM_SMCCC_FAST_CALL _AC(1,U)
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#define ARM_SMCCC_TYPE_SHIFT 31
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#define ARM_SMCCC_SMC_32 0
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#define ARM_SMCCC_SMC_64 1
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#define ARM_SMCCC_CALL_CONV_SHIFT 30
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#define ARM_SMCCC_OWNER_MASK 0x3F
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#define ARM_SMCCC_OWNER_SHIFT 24
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#define ARM_SMCCC_FUNC_MASK 0xFFFF
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#define ARM_SMCCC_IS_FAST_CALL(smc_val) \
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((smc_val) & (ARM_SMCCC_FAST_CALL << ARM_SMCCC_TYPE_SHIFT))
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#define ARM_SMCCC_IS_64(smc_val) \
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((smc_val) & (ARM_SMCCC_SMC_64 << ARM_SMCCC_CALL_CONV_SHIFT))
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#define ARM_SMCCC_FUNC_NUM(smc_val) ((smc_val) & ARM_SMCCC_FUNC_MASK)
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#define ARM_SMCCC_OWNER_NUM(smc_val) \
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(((smc_val) >> ARM_SMCCC_OWNER_SHIFT) & ARM_SMCCC_OWNER_MASK)
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#define ARM_SMCCC_CALL_VAL(type, calling_convention, owner, func_num) \
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(((type) << ARM_SMCCC_TYPE_SHIFT) | \
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((calling_convention) << ARM_SMCCC_CALL_CONV_SHIFT) | \
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(((owner) & ARM_SMCCC_OWNER_MASK) << ARM_SMCCC_OWNER_SHIFT) | \
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((func_num) & ARM_SMCCC_FUNC_MASK))
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#define ARM_SMCCC_OWNER_ARCH 0
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#define ARM_SMCCC_OWNER_CPU 1
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#define ARM_SMCCC_OWNER_SIP 2
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#define ARM_SMCCC_OWNER_OEM 3
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#define ARM_SMCCC_OWNER_STANDARD 4
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#define ARM_SMCCC_OWNER_STANDARD_HYP 5
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#define ARM_SMCCC_OWNER_VENDOR_HYP 6
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#define ARM_SMCCC_OWNER_TRUSTED_APP 48
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#define ARM_SMCCC_OWNER_TRUSTED_APP_END 49
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#define ARM_SMCCC_OWNER_TRUSTED_OS 50
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#define ARM_SMCCC_OWNER_TRUSTED_OS_END 63
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#define ARM_SMCCC_FUNC_QUERY_CALL_UID 0xff01
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#define ARM_SMCCC_QUIRK_NONE 0
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#define ARM_SMCCC_QUIRK_QCOM_A6 1 /* Save/restore register a6 */
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#define ARM_SMCCC_VERSION_1_0 0x10000
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#define ARM_SMCCC_VERSION_1_1 0x10001
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#define ARM_SMCCC_VERSION_1_2 0x10002
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#define ARM_SMCCC_VERSION_1_3 0x10003
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#define ARM_SMCCC_1_3_SVE_HINT 0x10000
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#define ARM_SMCCC_VERSION_FUNC_ID \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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0, 0)
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#define ARM_SMCCC_ARCH_FEATURES_FUNC_ID \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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0, 1)
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#define ARM_SMCCC_ARCH_SOC_ID \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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0, 2)
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#define ARM_SMCCC_ARCH_WORKAROUND_1 \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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0, 0x8000)
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#define ARM_SMCCC_ARCH_WORKAROUND_2 \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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0, 0x7fff)
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#define ARM_SMCCC_ARCH_WORKAROUND_3 \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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0, 0x3fff)
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#define ARM_SMCCC_VENDOR_HYP_CALL_UID_FUNC_ID \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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ARM_SMCCC_OWNER_VENDOR_HYP, \
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ARM_SMCCC_FUNC_QUERY_CALL_UID)
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/* KVM UID value: 28b46fb6-2ec5-11e9-a9ca-4b564d003a74 */
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#define ARM_SMCCC_VENDOR_HYP_UID_KVM_REG_0 0xb66fb428U
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#define ARM_SMCCC_VENDOR_HYP_UID_KVM_REG_1 0xe911c52eU
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#define ARM_SMCCC_VENDOR_HYP_UID_KVM_REG_2 0x564bcaa9U
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#define ARM_SMCCC_VENDOR_HYP_UID_KVM_REG_3 0x743a004dU
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/* KVM "vendor specific" services */
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#define ARM_SMCCC_KVM_FUNC_FEATURES 0
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#define ARM_SMCCC_KVM_FUNC_PTP 1
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#define ARM_SMCCC_KVM_FUNC_FEATURES_2 127
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#define ARM_SMCCC_KVM_NUM_FUNCS 128
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#define ARM_SMCCC_VENDOR_HYP_KVM_FEATURES_FUNC_ID \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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ARM_SMCCC_OWNER_VENDOR_HYP, \
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ARM_SMCCC_KVM_FUNC_FEATURES)
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#define SMCCC_ARCH_WORKAROUND_RET_UNAFFECTED 1
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/*
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* ptp_kvm is a feature used for time sync between vm and host.
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* ptp_kvm module in guest kernel will get service from host using
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* this hypercall ID.
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*/
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#define ARM_SMCCC_VENDOR_HYP_KVM_PTP_FUNC_ID \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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ARM_SMCCC_OWNER_VENDOR_HYP, \
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ARM_SMCCC_KVM_FUNC_PTP)
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/* ptp_kvm counter type ID */
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#define KVM_PTP_VIRT_COUNTER 0
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#define KVM_PTP_PHYS_COUNTER 1
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/* Paravirtualised time calls (defined by ARM DEN0057A) */
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#define ARM_SMCCC_HV_PV_TIME_FEATURES \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_64, \
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ARM_SMCCC_OWNER_STANDARD_HYP, \
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0x20)
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#define ARM_SMCCC_HV_PV_TIME_ST \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_64, \
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ARM_SMCCC_OWNER_STANDARD_HYP, \
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0x21)
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/* TRNG entropy source calls (defined by ARM DEN0098) */
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#define ARM_SMCCC_TRNG_VERSION \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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ARM_SMCCC_OWNER_STANDARD, \
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0x50)
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#define ARM_SMCCC_TRNG_FEATURES \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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ARM_SMCCC_OWNER_STANDARD, \
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0x51)
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#define ARM_SMCCC_TRNG_GET_UUID \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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ARM_SMCCC_OWNER_STANDARD, \
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0x52)
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#define ARM_SMCCC_TRNG_RND32 \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_32, \
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ARM_SMCCC_OWNER_STANDARD, \
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0x53)
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#define ARM_SMCCC_TRNG_RND64 \
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ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
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ARM_SMCCC_SMC_64, \
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ARM_SMCCC_OWNER_STANDARD, \
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0x53)
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/*
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* Return codes defined in ARM DEN 0070A
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* ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C
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*/
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#define SMCCC_RET_SUCCESS 0
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#define SMCCC_RET_NOT_SUPPORTED -1
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#define SMCCC_RET_NOT_REQUIRED -2
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#define SMCCC_RET_INVALID_PARAMETER -3
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#endif /*__LINUX_ARM_SMCCC_H*/
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