target-arm/kvm-consts.h

/*
 * KVM ARM ABI constant definitions
 *
 * Copyright (c) 2013 Linaro Limited
 *
 * Provide versions of KVM constant defines that can be used even
 * when CONFIG_KVM is not set and we don't have access to the
 * KVM headers. If CONFIG_KVM is set, we do a compile-time check
 * that we haven't got out of sync somehow.
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 */
#ifndef ARM_KVM_CONSTS_H
#define ARM_KVM_CONSTS_H

#ifdef CONFIG_KVM
#include "qemu/compiler.h"
#include <linux/kvm.h>

#define MISMATCH_CHECK(X, Y) QEMU_BUILD_BUG_ON(X != Y)

#else
#define MISMATCH_CHECK(X, Y)
#endif

#define CP_REG_SIZE_SHIFT 52
#define CP_REG_SIZE_MASK       0x00f0000000000000ULL
#define CP_REG_SIZE_U32        0x0020000000000000ULL
#define CP_REG_SIZE_U64        0x0030000000000000ULL
#define CP_REG_ARM             0x4000000000000000ULL
#define CP_REG_ARCH_MASK       0xff00000000000000ULL

MISMATCH_CHECK(CP_REG_SIZE_SHIFT, KVM_REG_SIZE_SHIFT)
MISMATCH_CHECK(CP_REG_SIZE_MASK, KVM_REG_SIZE_MASK)
MISMATCH_CHECK(CP_REG_SIZE_U32, KVM_REG_SIZE_U32)
MISMATCH_CHECK(CP_REG_SIZE_U64, KVM_REG_SIZE_U64)
MISMATCH_CHECK(CP_REG_ARM, KVM_REG_ARM)
MISMATCH_CHECK(CP_REG_ARCH_MASK, KVM_REG_ARCH_MASK)

#define PSCI_FN_BASE 0x95c1ba5e
#define PSCI_FN(n) (PSCI_FN_BASE + (n))
#define PSCI_FN_CPU_SUSPEND PSCI_FN(0)
#define PSCI_FN_CPU_OFF PSCI_FN(1)
#define PSCI_FN_CPU_ON PSCI_FN(2)
#define PSCI_FN_MIGRATE PSCI_FN(3)

MISMATCH_CHECK(PSCI_FN_CPU_SUSPEND, KVM_PSCI_FN_CPU_SUSPEND)
MISMATCH_CHECK(PSCI_FN_CPU_OFF, KVM_PSCI_FN_CPU_OFF)
MISMATCH_CHECK(PSCI_FN_CPU_ON, KVM_PSCI_FN_CPU_ON)
MISMATCH_CHECK(PSCI_FN_MIGRATE, KVM_PSCI_FN_MIGRATE)

#define QEMU_KVM_ARM_TARGET_CORTEX_A15 0

/* There's no kernel define for this: sentinel value which
 * matches no KVM target value for either 64 or 32 bit
 */
#define QEMU_KVM_ARM_TARGET_NONE UINT_MAX

#ifndef TARGET_AARCH64
MISMATCH_CHECK(QEMU_KVM_ARM_TARGET_CORTEX_A15, KVM_ARM_TARGET_CORTEX_A15)
#endif

#define CP_REG_ARM64                   0x6000000000000000ULL
#define CP_REG_ARM_COPROC_MASK         0x000000000FFF0000
#define CP_REG_ARM_COPROC_SHIFT        16
#define CP_REG_ARM64_SYSREG            (0x0013 << CP_REG_ARM_COPROC_SHIFT)
#define CP_REG_ARM64_SYSREG_OP0_MASK   0x000000000000c000
#define CP_REG_ARM64_SYSREG_OP0_SHIFT  14
#define CP_REG_ARM64_SYSREG_OP1_MASK   0x0000000000003800
#define CP_REG_ARM64_SYSREG_OP1_SHIFT  11
#define CP_REG_ARM64_SYSREG_CRN_MASK   0x0000000000000780
#define CP_REG_ARM64_SYSREG_CRN_SHIFT  7
#define CP_REG_ARM64_SYSREG_CRM_MASK   0x0000000000000078
#define CP_REG_ARM64_SYSREG_CRM_SHIFT  3
#define CP_REG_ARM64_SYSREG_OP2_MASK   0x0000000000000007
#define CP_REG_ARM64_SYSREG_OP2_SHIFT  0

/* No kernel define but it's useful to QEMU */
#define CP_REG_ARM64_SYSREG_CP (CP_REG_ARM64_SYSREG >> CP_REG_ARM_COPROC_SHIFT)

#ifdef TARGET_AARCH64
MISMATCH_CHECK(CP_REG_ARM64, KVM_REG_ARM64)
MISMATCH_CHECK(CP_REG_ARM_COPROC_MASK, KVM_REG_ARM_COPROC_MASK)
MISMATCH_CHECK(CP_REG_ARM_COPROC_SHIFT, KVM_REG_ARM_COPROC_SHIFT)
MISMATCH_CHECK(CP_REG_ARM64_SYSREG, KVM_REG_ARM64_SYSREG)
MISMATCH_CHECK(CP_REG_ARM64_SYSREG_OP0_MASK, KVM_REG_ARM64_SYSREG_OP0_MASK)
MISMATCH_CHECK(CP_REG_ARM64_SYSREG_OP0_SHIFT, KVM_REG_ARM64_SYSREG_OP0_SHIFT)
MISMATCH_CHECK(CP_REG_ARM64_SYSREG_OP1_MASK, KVM_REG_ARM64_SYSREG_OP1_MASK)
MISMATCH_CHECK(CP_REG_ARM64_SYSREG_OP1_SHIFT, KVM_REG_ARM64_SYSREG_OP1_SHIFT)
MISMATCH_CHECK(CP_REG_ARM64_SYSREG_CRN_MASK, KVM_REG_ARM64_SYSREG_CRN_MASK)
MISMATCH_CHECK(CP_REG_ARM64_SYSREG_CRN_SHIFT, KVM_REG_ARM64_SYSREG_CRN_SHIFT)
MISMATCH_CHECK(CP_REG_ARM64_SYSREG_CRM_MASK, KVM_REG_ARM64_SYSREG_CRM_MASK)
MISMATCH_CHECK(CP_REG_ARM64_SYSREG_CRM_SHIFT, KVM_REG_ARM64_SYSREG_CRM_SHIFT)
MISMATCH_CHECK(CP_REG_ARM64_SYSREG_OP2_MASK, KVM_REG_ARM64_SYSREG_OP2_MASK)
MISMATCH_CHECK(CP_REG_ARM64_SYSREG_OP2_SHIFT, KVM_REG_ARM64_SYSREG_OP2_SHIFT)
#endif

#undef MISMATCH_CHECK

#endif