From: Oliver Upton <oliver.upton@linux.dev>
To: kvmarm@lists.linux.dev
Cc: kvm@vger.kernel.org, Marc Zyngier <maz@kernel.org>,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>, Will Deacon <will@kernel.org>,
Julien Thierry <julien.thierry.kdev@gmail.com>,
Salil Mehta <salil.mehta@huawei.com>,
Oliver Upton <oliver.upton@linux.dev>
Subject: [PATCH kvmtool 05/21] Import arm-smccc.h from Linux 6.4-rc1
Date: Fri, 26 May 2023 22:16:56 +0000 [thread overview]
Message-ID: <20230526221712.317287-6-oliver.upton@linux.dev> (raw)
In-Reply-To: <20230526221712.317287-1-oliver.upton@linux.dev>
Copy in the SMCCC definitions from the kernel, which will be used to
implement SMCCC handling in userspace.
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
---
include/linux/arm-smccc.h | 240 ++++++++++++++++++++++++++++++++++++++
1 file changed, 240 insertions(+)
create mode 100644 include/linux/arm-smccc.h
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h
new file mode 100644
index 000000000000..3663c31ba52c
--- /dev/null
+++ b/include/linux/arm-smccc.h
@@ -0,0 +1,240 @@
+/* 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
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+
+enum arm_smccc_conduit {
+ SMCCC_CONDUIT_NONE,
+ SMCCC_CONDUIT_SMC,
+ SMCCC_CONDUIT_HVC,
+};
+
+/**
+ * struct arm_smccc_res - Result from SMC/HVC call
+ * @a0-a3 result values from registers 0 to 3
+ */
+struct arm_smccc_res {
+ unsigned long a0;
+ unsigned long a1;
+ unsigned long a2;
+ unsigned long a3;
+};
+
+/**
+ * struct arm_smccc_1_2_regs - Arguments for or Results from SMC/HVC call
+ * @a0-a17 argument values from registers 0 to 17
+ */
+struct arm_smccc_1_2_regs {
+ unsigned long a0;
+ unsigned long a1;
+ unsigned long a2;
+ unsigned long a3;
+ unsigned long a4;
+ unsigned long a5;
+ unsigned long a6;
+ unsigned long a7;
+ unsigned long a8;
+ unsigned long a9;
+ unsigned long a10;
+ unsigned long a11;
+ unsigned long a12;
+ unsigned long a13;
+ unsigned long a14;
+ unsigned long a15;
+ unsigned long a16;
+ unsigned long a17;
+};
+
+#endif /*__ASSEMBLY__*/
+#endif /*__LINUX_ARM_SMCCC_H*/
--
2.41.0.rc0.172.g3f132b7071-goog
next prev parent reply other threads:[~2023-05-26 22:17 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-26 22:16 [PATCH kvmtool 00/21] arm64: Handle PSCI calls in userspace Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 01/21] update_headers: Use a list for arch-generic headers Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 02/21] update_headers: Add missing entries to list of headers to copy Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 03/21] Copy 64-bit alignment attrtibutes from Linux 6.4-rc1 Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 04/21] Update headers with " Oliver Upton
2023-05-26 22:16 ` Oliver Upton [this message]
2023-05-26 22:16 ` [PATCH kvmtool 06/21] aarch64: Copy cputype.h from " Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 07/21] arm: Stash kvm_vcpu_init for later use Oliver Upton
2023-05-26 22:16 ` [PATCH kvmtool 08/21] arm: Add support for resetting a vCPU Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 09/21] arm: Use KVM_SET_MP_STATE ioctl to power off non-boot vCPUs Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 10/21] aarch64: Expose ARM64_CORE_REG() for general use Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 11/21] arm: Generalize execution state specific VM initialization Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 12/21] Add helpers to pause the VM from vCPU thread Oliver Upton
2023-06-09 10:59 ` Shaoqin Huang
2023-06-15 8:59 ` Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 13/21] aarch64: Add support for finding vCPU for given MPIDR Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 14/21] aarch64: Add skeleton implementation for PSCI Oliver Upton
2023-06-13 15:10 ` Joey Gouly
2023-05-26 22:17 ` [PATCH kvmtool 15/21] aarch64: psci: Implement CPU_SUSPEND Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 16/21] aarch64: psci: Implement CPU_OFF Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 17/21] aarch64: psci: Implement CPU_ON Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 18/21] aarch64: psci: Implement AFFINITY_INFO Oliver Upton
2023-05-26 22:17 ` [PATCH kvmtool 19/21] aarch64: psci: Implement MIGRATE_INFO_TYPE Oliver Upton
2023-05-26 22:18 ` [PATCH kvmtool 20/21] aarch64: psci: Implement SYSTEM_{OFF,RESET} Oliver Upton
2023-05-26 22:19 ` [PATCH kvmtool 21/21] aarch64: smccc: Start sending PSCI to userspace Oliver Upton
2023-06-14 12:05 ` [PATCH kvmtool 00/21] arm64: Handle PSCI calls in userspace Joey Gouly
2023-06-14 16:05 ` Oliver Upton
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