target-arm/kvm-consts.h

   1 /*
   2  * KVM ARM ABI constant definitions
   3  *
   4  * Copyright (c) 2013 Linaro Limited
   5  *
   6  * Provide versions of KVM constant defines that can be used even
   7  * when CONFIG_KVM is not set and we don't have access to the
   8  * KVM headers. If CONFIG_KVM is set, we do a compile-time check
   9  * that we haven't got out of sync somehow.
  10  *
  11  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  12  * See the COPYING file in the top-level directory.
  13  */
  14 #ifndef ARM_KVM_CONSTS_H
  15 #define ARM_KVM_CONSTS_H
  16
  17 #ifdef CONFIG_KVM
  18 #include "qemu/compiler.h"
  19 #include <linux/kvm.h>
  20
  21 #define MISMATCH_CHECK(X, Y) QEMU_BUILD_BUG_ON(X != Y)
  22
  23 #else
  24 #define MISMATCH_CHECK(X, Y)
  25 #endif
  26
  27 #define CP_REG_SIZE_SHIFT 52
  28 #define CP_REG_SIZE_MASK       0x00f0000000000000ULL
  29 #define CP_REG_SIZE_U32        0x0020000000000000ULL
  30 #define CP_REG_SIZE_U64        0x0030000000000000ULL
  31 #define CP_REG_ARM             0x4000000000000000ULL
  32 #define CP_REG_ARCH_MASK       0xff00000000000000ULL
  33
  34 MISMATCH_CHECK(CP_REG_SIZE_SHIFT, KVM_REG_SIZE_SHIFT)
  35 MISMATCH_CHECK(CP_REG_SIZE_MASK, KVM_REG_SIZE_MASK)
  36 MISMATCH_CHECK(CP_REG_SIZE_U32, KVM_REG_SIZE_U32)
  37 MISMATCH_CHECK(CP_REG_SIZE_U64, KVM_REG_SIZE_U64)
  38 MISMATCH_CHECK(CP_REG_ARM, KVM_REG_ARM)
  39 MISMATCH_CHECK(CP_REG_ARCH_MASK, KVM_REG_ARCH_MASK)
  40
  41 #define PSCI_FN_BASE 0x95c1ba5e
  42 #define PSCI_FN(n) (PSCI_FN_BASE + (n))
  43 #define PSCI_FN_CPU_SUSPEND PSCI_FN(0)
  44 #define PSCI_FN_CPU_OFF PSCI_FN(1)
  45 #define PSCI_FN_CPU_ON PSCI_FN(2)
  46 #define PSCI_FN_MIGRATE PSCI_FN(3)
  47
  48 MISMATCH_CHECK(PSCI_FN_CPU_SUSPEND, KVM_PSCI_FN_CPU_SUSPEND)
  49 MISMATCH_CHECK(PSCI_FN_CPU_OFF, KVM_PSCI_FN_CPU_OFF)
  50 MISMATCH_CHECK(PSCI_FN_CPU_ON, KVM_PSCI_FN_CPU_ON)
  51 MISMATCH_CHECK(PSCI_FN_MIGRATE, KVM_PSCI_FN_MIGRATE)
  52
  53 /* Note that KVM uses overlapping values for AArch32 and AArch64
  54  * target CPU numbers. AArch32 targets:
  55  */
  56 #define QEMU_KVM_ARM_TARGET_CORTEX_A15 0
  57 #define QEMU_KVM_ARM_TARGET_CORTEX_A7 1
  58
  59 /* AArch64 targets: */
  60 #define QEMU_KVM_ARM_TARGET_AEM_V8 0
  61 #define QEMU_KVM_ARM_TARGET_FOUNDATION_V8 1
  62 #define QEMU_KVM_ARM_TARGET_CORTEX_A57 2
  63
  64 /* There's no kernel define for this: sentinel value which
  65  * matches no KVM target value for either 64 or 32 bit
  66  */
  67 #define QEMU_KVM_ARM_TARGET_NONE UINT_MAX
  68
  69 #ifdef TARGET_AARCH64
  70 MISMATCH_CHECK(QEMU_KVM_ARM_TARGET_AEM_V8, KVM_ARM_TARGET_AEM_V8)
  71 MISMATCH_CHECK(QEMU_KVM_ARM_TARGET_FOUNDATION_V8, KVM_ARM_TARGET_FOUNDATION_V8)
  72 MISMATCH_CHECK(QEMU_KVM_ARM_TARGET_CORTEX_A57, KVM_ARM_TARGET_CORTEX_A57)
  73 #else
  74 MISMATCH_CHECK(QEMU_KVM_ARM_TARGET_CORTEX_A15, KVM_ARM_TARGET_CORTEX_A15)
  75 MISMATCH_CHECK(QEMU_KVM_ARM_TARGET_CORTEX_A7, KVM_ARM_TARGET_CORTEX_A7)
  76 #endif
  77
  78 #define CP_REG_ARM64                   0x6000000000000000ULL
  79 #define CP_REG_ARM_COPROC_MASK         0x000000000FFF0000
  80 #define CP_REG_ARM_COPROC_SHIFT        16
  81 #define CP_REG_ARM64_SYSREG            (0x0013 << CP_REG_ARM_COPROC_SHIFT)
  82 #define CP_REG_ARM64_SYSREG_OP0_MASK   0x000000000000c000
  83 #define CP_REG_ARM64_SYSREG_OP0_SHIFT  14
  84 #define CP_REG_ARM64_SYSREG_OP1_MASK   0x0000000000003800
  85 #define CP_REG_ARM64_SYSREG_OP1_SHIFT  11
  86 #define CP_REG_ARM64_SYSREG_CRN_MASK   0x0000000000000780
  87 #define CP_REG_ARM64_SYSREG_CRN_SHIFT  7
  88 #define CP_REG_ARM64_SYSREG_CRM_MASK   0x0000000000000078
  89 #define CP_REG_ARM64_SYSREG_CRM_SHIFT  3
  90 #define CP_REG_ARM64_SYSREG_OP2_MASK   0x0000000000000007
  91 #define CP_REG_ARM64_SYSREG_OP2_SHIFT  0
  92
  93 /* No kernel define but it's useful to QEMU */
  94 #define CP_REG_ARM64_SYSREG_CP (CP_REG_ARM64_SYSREG >> CP_REG_ARM_COPROC_SHIFT)
  95
  96 #ifdef TARGET_AARCH64
  97 MISMATCH_CHECK(CP_REG_ARM64, KVM_REG_ARM64)
  98 MISMATCH_CHECK(CP_REG_ARM_COPROC_MASK, KVM_REG_ARM_COPROC_MASK)
  99 MISMATCH_CHECK(CP_REG_ARM_COPROC_SHIFT, KVM_REG_ARM_COPROC_SHIFT)
 100 MISMATCH_CHECK(CP_REG_ARM64_SYSREG, KVM_REG_ARM64_SYSREG)
 101 MISMATCH_CHECK(CP_REG_ARM64_SYSREG_OP0_MASK, KVM_REG_ARM64_SYSREG_OP0_MASK)
 102 MISMATCH_CHECK(CP_REG_ARM64_SYSREG_OP0_SHIFT, KVM_REG_ARM64_SYSREG_OP0_SHIFT)
 103 MISMATCH_CHECK(CP_REG_ARM64_SYSREG_OP1_MASK, KVM_REG_ARM64_SYSREG_OP1_MASK)
 104 MISMATCH_CHECK(CP_REG_ARM64_SYSREG_OP1_SHIFT, KVM_REG_ARM64_SYSREG_OP1_SHIFT)
 105 MISMATCH_CHECK(CP_REG_ARM64_SYSREG_CRN_MASK, KVM_REG_ARM64_SYSREG_CRN_MASK)
 106 MISMATCH_CHECK(CP_REG_ARM64_SYSREG_CRN_SHIFT, KVM_REG_ARM64_SYSREG_CRN_SHIFT)
 107 MISMATCH_CHECK(CP_REG_ARM64_SYSREG_CRM_MASK, KVM_REG_ARM64_SYSREG_CRM_MASK)
 108 MISMATCH_CHECK(CP_REG_ARM64_SYSREG_CRM_SHIFT, KVM_REG_ARM64_SYSREG_CRM_SHIFT)
 109 MISMATCH_CHECK(CP_REG_ARM64_SYSREG_OP2_MASK, KVM_REG_ARM64_SYSREG_OP2_MASK)
 110 MISMATCH_CHECK(CP_REG_ARM64_SYSREG_OP2_SHIFT, KVM_REG_ARM64_SYSREG_OP2_SHIFT)
 111 #endif
 112
 113 #undef MISMATCH_CHECK
 114
 115 #endif