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Message-ID: <867b0aeb-97f4-8fc0-b37a-42946a1e65ad@redhat.com>
Date: Tue, 26 Apr 2022 15:24:20 +0800
From: Gavin Shan <gshan@...hat.com>
To: Raghavendra Rao Ananta <rananta@...gle.com>,
Marc Zyngier <maz@...nel.org>,
Andrew Jones <drjones@...hat.com>,
James Morse <james.morse@....com>,
Alexandru Elisei <alexandru.elisei@....com>,
Suzuki K Poulose <suzuki.poulose@....com>
Cc: kvm@...r.kernel.org, Catalin Marinas <catalin.marinas@....com>,
Peter Shier <pshier@...gle.com>, linux-kernel@...r.kernel.org,
Paolo Bonzini <pbonzini@...hat.com>,
Will Deacon <will@...nel.org>, kvmarm@...ts.cs.columbia.edu,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v6 7/9] tools: Import ARM SMCCC definitions
On 4/23/22 8:03 AM, Raghavendra Rao Ananta wrote:
> Import the standard SMCCC definitions from include/linux/arm-smccc.h.
>
> Signed-off-by: Raghavendra Rao Ananta <rananta@...gle.com>
> ---
> tools/include/linux/arm-smccc.h | 193 ++++++++++++++++++++++++++++++++
> 1 file changed, 193 insertions(+)
> create mode 100644 tools/include/linux/arm-smccc.h
>
Reviewed-by: Gavin Shan <gshan@...hat.com>
> diff --git a/tools/include/linux/arm-smccc.h b/tools/include/linux/arm-smccc.h
> new file mode 100644
> index 000000000000..63ce9bebccd3
> --- /dev/null
> +++ b/tools/include/linux/arm-smccc.h
> @@ -0,0 +1,193 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Copyright (c) 2015, Linaro Limited
> + */
> +#ifndef __LINUX_ARM_SMCCC_H
> +#define __LINUX_ARM_SMCCC_H
> +
> +#include <linux/const.h>
> +
> +/*
> + * This file provides common defines for ARM SMC Calling Convention as
> + * specified in
> + * https://developer.arm.com/docs/den0028/latest
> + *
> + * This code is up-to-date with version DEN 0028 C
> + */
> +
> +#define ARM_SMCCC_STD_CALL _AC(0,U)
> +#define ARM_SMCCC_FAST_CALL _AC(1,U)
> +#define ARM_SMCCC_TYPE_SHIFT 31
> +
> +#define ARM_SMCCC_SMC_32 0
> +#define ARM_SMCCC_SMC_64 1
> +#define ARM_SMCCC_CALL_CONV_SHIFT 30
> +
> +#define ARM_SMCCC_OWNER_MASK 0x3F
> +#define ARM_SMCCC_OWNER_SHIFT 24
> +
> +#define ARM_SMCCC_FUNC_MASK 0xFFFF
> +
> +#define ARM_SMCCC_IS_FAST_CALL(smc_val) \
> + ((smc_val) & (ARM_SMCCC_FAST_CALL << ARM_SMCCC_TYPE_SHIFT))
> +#define ARM_SMCCC_IS_64(smc_val) \
> + ((smc_val) & (ARM_SMCCC_SMC_64 << ARM_SMCCC_CALL_CONV_SHIFT))
> +#define ARM_SMCCC_FUNC_NUM(smc_val) ((smc_val) & ARM_SMCCC_FUNC_MASK)
> +#define ARM_SMCCC_OWNER_NUM(smc_val) \
> + (((smc_val) >> ARM_SMCCC_OWNER_SHIFT) & ARM_SMCCC_OWNER_MASK)
> +
> +#define ARM_SMCCC_CALL_VAL(type, calling_convention, owner, func_num) \
> + (((type) << ARM_SMCCC_TYPE_SHIFT) | \
> + ((calling_convention) << ARM_SMCCC_CALL_CONV_SHIFT) | \
> + (((owner) & ARM_SMCCC_OWNER_MASK) << ARM_SMCCC_OWNER_SHIFT) | \
> + ((func_num) & ARM_SMCCC_FUNC_MASK))
> +
> +#define ARM_SMCCC_OWNER_ARCH 0
> +#define ARM_SMCCC_OWNER_CPU 1
> +#define ARM_SMCCC_OWNER_SIP 2
> +#define ARM_SMCCC_OWNER_OEM 3
> +#define ARM_SMCCC_OWNER_STANDARD 4
> +#define ARM_SMCCC_OWNER_STANDARD_HYP 5
> +#define ARM_SMCCC_OWNER_VENDOR_HYP 6
> +#define ARM_SMCCC_OWNER_TRUSTED_APP 48
> +#define ARM_SMCCC_OWNER_TRUSTED_APP_END 49
> +#define ARM_SMCCC_OWNER_TRUSTED_OS 50
> +#define ARM_SMCCC_OWNER_TRUSTED_OS_END 63
> +
> +#define ARM_SMCCC_FUNC_QUERY_CALL_UID 0xff01
> +
> +#define ARM_SMCCC_QUIRK_NONE 0
> +#define ARM_SMCCC_QUIRK_QCOM_A6 1 /* Save/restore register a6 */
> +
> +#define ARM_SMCCC_VERSION_1_0 0x10000
> +#define ARM_SMCCC_VERSION_1_1 0x10001
> +#define ARM_SMCCC_VERSION_1_2 0x10002
> +#define ARM_SMCCC_VERSION_1_3 0x10003
> +
> +#define ARM_SMCCC_1_3_SVE_HINT 0x10000
> +
> +#define ARM_SMCCC_VERSION_FUNC_ID \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + 0, 0)
> +
> +#define ARM_SMCCC_ARCH_FEATURES_FUNC_ID \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + 0, 1)
> +
> +#define ARM_SMCCC_ARCH_SOC_ID \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + 0, 2)
> +
> +#define ARM_SMCCC_ARCH_WORKAROUND_1 \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + 0, 0x8000)
> +
> +#define ARM_SMCCC_ARCH_WORKAROUND_2 \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + 0, 0x7fff)
> +
> +#define ARM_SMCCC_ARCH_WORKAROUND_3 \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + 0, 0x3fff)
> +
> +#define ARM_SMCCC_VENDOR_HYP_CALL_UID_FUNC_ID \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + ARM_SMCCC_OWNER_VENDOR_HYP, \
> + ARM_SMCCC_FUNC_QUERY_CALL_UID)
> +
> +/* KVM UID value: 28b46fb6-2ec5-11e9-a9ca-4b564d003a74 */
> +#define ARM_SMCCC_VENDOR_HYP_UID_KVM_REG_0 0xb66fb428U
> +#define ARM_SMCCC_VENDOR_HYP_UID_KVM_REG_1 0xe911c52eU
> +#define ARM_SMCCC_VENDOR_HYP_UID_KVM_REG_2 0x564bcaa9U
> +#define ARM_SMCCC_VENDOR_HYP_UID_KVM_REG_3 0x743a004dU
> +
> +/* KVM "vendor specific" services */
> +#define ARM_SMCCC_KVM_FUNC_FEATURES 0
> +#define ARM_SMCCC_KVM_FUNC_PTP 1
> +#define ARM_SMCCC_KVM_FUNC_FEATURES_2 127
> +#define ARM_SMCCC_KVM_NUM_FUNCS 128
> +
> +#define ARM_SMCCC_VENDOR_HYP_KVM_FEATURES_FUNC_ID \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + ARM_SMCCC_OWNER_VENDOR_HYP, \
> + ARM_SMCCC_KVM_FUNC_FEATURES)
> +
> +#define SMCCC_ARCH_WORKAROUND_RET_UNAFFECTED 1
> +
> +/*
> + * ptp_kvm is a feature used for time sync between vm and host.
> + * ptp_kvm module in guest kernel will get service from host using
> + * this hypercall ID.
> + */
> +#define ARM_SMCCC_VENDOR_HYP_KVM_PTP_FUNC_ID \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + ARM_SMCCC_OWNER_VENDOR_HYP, \
> + ARM_SMCCC_KVM_FUNC_PTP)
> +
> +/* ptp_kvm counter type ID */
> +#define KVM_PTP_VIRT_COUNTER 0
> +#define KVM_PTP_PHYS_COUNTER 1
> +
> +/* Paravirtualised time calls (defined by ARM DEN0057A) */
> +#define ARM_SMCCC_HV_PV_TIME_FEATURES \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_64, \
> + ARM_SMCCC_OWNER_STANDARD_HYP, \
> + 0x20)
> +
> +#define ARM_SMCCC_HV_PV_TIME_ST \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_64, \
> + ARM_SMCCC_OWNER_STANDARD_HYP, \
> + 0x21)
> +
> +/* TRNG entropy source calls (defined by ARM DEN0098) */
> +#define ARM_SMCCC_TRNG_VERSION \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + ARM_SMCCC_OWNER_STANDARD, \
> + 0x50)
> +
> +#define ARM_SMCCC_TRNG_FEATURES \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + ARM_SMCCC_OWNER_STANDARD, \
> + 0x51)
> +
> +#define ARM_SMCCC_TRNG_GET_UUID \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + ARM_SMCCC_OWNER_STANDARD, \
> + 0x52)
> +
> +#define ARM_SMCCC_TRNG_RND32 \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_32, \
> + ARM_SMCCC_OWNER_STANDARD, \
> + 0x53)
> +
> +#define ARM_SMCCC_TRNG_RND64 \
> + ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, \
> + ARM_SMCCC_SMC_64, \
> + ARM_SMCCC_OWNER_STANDARD, \
> + 0x53)
> +
> +/*
> + * Return codes defined in ARM DEN 0070A
> + * ARM DEN 0070A is now merged/consolidated into ARM DEN 0028 C
> + */
> +#define SMCCC_RET_SUCCESS 0
> +#define SMCCC_RET_NOT_SUPPORTED -1
> +#define SMCCC_RET_NOT_REQUIRED -2
> +#define SMCCC_RET_INVALID_PARAMETER -3
> +
> +#endif /*__LINUX_ARM_SMCCC_H*/
>
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