linux-headers/asm-arm/kvm.h

   1 /*
   2  * Copyright (C) 2012 - Virtual Open Systems and Columbia University
   3  * Author: Christoffer Dall <c.dall@virtualopensystems.com>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License, version 2, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  */
  18
  19 #ifndef __ARM_KVM_H__
  20 #define __ARM_KVM_H__
  21
  22 #include <linux/types.h>
  23 #include <asm/ptrace.h>
  24
  25 #define __KVM_HAVE_GUEST_DEBUG
  26 #define __KVM_HAVE_IRQ_LINE
  27
  28 #define KVM_REG_SIZE(id)                                                \
  29         (1U << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
  30
  31 /* Valid for svc_regs, abt_regs, und_regs, irq_regs in struct kvm_regs */
  32 #define KVM_ARM_SVC_sp          svc_regs[0]
  33 #define KVM_ARM_SVC_lr          svc_regs[1]
  34 #define KVM_ARM_SVC_spsr        svc_regs[2]
  35 #define KVM_ARM_ABT_sp          abt_regs[0]
  36 #define KVM_ARM_ABT_lr          abt_regs[1]
  37 #define KVM_ARM_ABT_spsr        abt_regs[2]
  38 #define KVM_ARM_UND_sp          und_regs[0]
  39 #define KVM_ARM_UND_lr          und_regs[1]
  40 #define KVM_ARM_UND_spsr        und_regs[2]
  41 #define KVM_ARM_IRQ_sp          irq_regs[0]
  42 #define KVM_ARM_IRQ_lr          irq_regs[1]
  43 #define KVM_ARM_IRQ_spsr        irq_regs[2]
  44
  45 /* Valid only for fiq_regs in struct kvm_regs */
  46 #define KVM_ARM_FIQ_r8          fiq_regs[0]
  47 #define KVM_ARM_FIQ_r9          fiq_regs[1]
  48 #define KVM_ARM_FIQ_r10         fiq_regs[2]
  49 #define KVM_ARM_FIQ_fp          fiq_regs[3]
  50 #define KVM_ARM_FIQ_ip          fiq_regs[4]
  51 #define KVM_ARM_FIQ_sp          fiq_regs[5]
  52 #define KVM_ARM_FIQ_lr          fiq_regs[6]
  53 #define KVM_ARM_FIQ_spsr        fiq_regs[7]
  54
  55 struct kvm_regs {
  56         struct pt_regs usr_regs;        /* R0_usr - R14_usr, PC, CPSR */
  57         unsigned long svc_regs[3];      /* SP_svc, LR_svc, SPSR_svc */
  58         unsigned long abt_regs[3];      /* SP_abt, LR_abt, SPSR_abt */
  59         unsigned long und_regs[3];      /* SP_und, LR_und, SPSR_und */
  60         unsigned long irq_regs[3];      /* SP_irq, LR_irq, SPSR_irq */
  61         unsigned long fiq_regs[8];      /* R8_fiq - R14_fiq, SPSR_fiq */
  62 };
  63
  64 /* Supported Processor Types */
  65 #define KVM_ARM_TARGET_CORTEX_A15       0
  66 #define KVM_ARM_NUM_TARGETS             1
  67
  68 /* KVM_ARM_SET_DEVICE_ADDR ioctl id encoding */
  69 #define KVM_ARM_DEVICE_TYPE_SHIFT       0
  70 #define KVM_ARM_DEVICE_TYPE_MASK        (0xffff << KVM_ARM_DEVICE_TYPE_SHIFT)
  71 #define KVM_ARM_DEVICE_ID_SHIFT         16
  72 #define KVM_ARM_DEVICE_ID_MASK          (0xffff << KVM_ARM_DEVICE_ID_SHIFT)
  73
  74 /* Supported device IDs */
  75 #define KVM_ARM_DEVICE_VGIC_V2          0
  76
  77 /* Supported VGIC address types  */
  78 #define KVM_VGIC_V2_ADDR_TYPE_DIST      0
  79 #define KVM_VGIC_V2_ADDR_TYPE_CPU       1
  80
  81 #define KVM_VGIC_V2_DIST_SIZE           0x1000
  82 #define KVM_VGIC_V2_CPU_SIZE            0x2000
  83
  84 #define KVM_ARM_VCPU_POWER_OFF          0 /* CPU is started in OFF state */
  85
  86 struct kvm_vcpu_init {
  87         __u32 target;
  88         __u32 features[7];
  89 };
  90
  91 struct kvm_sregs {
  92 };
  93
  94 struct kvm_fpu {
  95 };
  96
  97 struct kvm_guest_debug_arch {
  98 };
  99
 100 struct kvm_debug_exit_arch {
 101 };
 102
 103 struct kvm_sync_regs {
 104 };
 105
 106 struct kvm_arch_memory_slot {
 107 };
 108
 109 /* If you need to interpret the index values, here is the key: */
 110 #define KVM_REG_ARM_COPROC_MASK         0x000000000FFF0000
 111 #define KVM_REG_ARM_COPROC_SHIFT        16
 112 #define KVM_REG_ARM_32_OPC2_MASK        0x0000000000000007
 113 #define KVM_REG_ARM_32_OPC2_SHIFT       0
 114 #define KVM_REG_ARM_OPC1_MASK           0x0000000000000078
 115 #define KVM_REG_ARM_OPC1_SHIFT          3
 116 #define KVM_REG_ARM_CRM_MASK            0x0000000000000780
 117 #define KVM_REG_ARM_CRM_SHIFT           7
 118 #define KVM_REG_ARM_32_CRN_MASK         0x0000000000007800
 119 #define KVM_REG_ARM_32_CRN_SHIFT        11
 120
 121 /* Normal registers are mapped as coprocessor 16. */
 122 #define KVM_REG_ARM_CORE                (0x0010 << KVM_REG_ARM_COPROC_SHIFT)
 123 #define KVM_REG_ARM_CORE_REG(name)      (offsetof(struct kvm_regs, name) / 4)
 124
 125 /* Some registers need more space to represent values. */
 126 #define KVM_REG_ARM_DEMUX               (0x0011 << KVM_REG_ARM_COPROC_SHIFT)
 127 #define KVM_REG_ARM_DEMUX_ID_MASK       0x000000000000FF00
 128 #define KVM_REG_ARM_DEMUX_ID_SHIFT      8
 129 #define KVM_REG_ARM_DEMUX_ID_CCSIDR     (0x00 << KVM_REG_ARM_DEMUX_ID_SHIFT)
 130 #define KVM_REG_ARM_DEMUX_VAL_MASK      0x00000000000000FF
 131 #define KVM_REG_ARM_DEMUX_VAL_SHIFT     0
 132
 133 /* VFP registers: we could overload CP10 like ARM does, but that's ugly. */
 134 #define KVM_REG_ARM_VFP                 (0x0012 << KVM_REG_ARM_COPROC_SHIFT)
 135 #define KVM_REG_ARM_VFP_MASK            0x000000000000FFFF
 136 #define KVM_REG_ARM_VFP_BASE_REG        0x0
 137 #define KVM_REG_ARM_VFP_FPSID           0x1000
 138 #define KVM_REG_ARM_VFP_FPSCR           0x1001
 139 #define KVM_REG_ARM_VFP_MVFR1           0x1006
 140 #define KVM_REG_ARM_VFP_MVFR0           0x1007
 141 #define KVM_REG_ARM_VFP_FPEXC           0x1008
 142 #define KVM_REG_ARM_VFP_FPINST          0x1009
 143 #define KVM_REG_ARM_VFP_FPINST2         0x100A
 144
 145
 146 /* KVM_IRQ_LINE irq field index values */
 147 #define KVM_ARM_IRQ_TYPE_SHIFT          24
 148 #define KVM_ARM_IRQ_TYPE_MASK           0xff
 149 #define KVM_ARM_IRQ_VCPU_SHIFT          16
 150 #define KVM_ARM_IRQ_VCPU_MASK           0xff
 151 #define KVM_ARM_IRQ_NUM_SHIFT           0
 152 #define KVM_ARM_IRQ_NUM_MASK            0xffff
 153
 154 /* irq_type field */
 155 #define KVM_ARM_IRQ_TYPE_CPU            0
 156 #define KVM_ARM_IRQ_TYPE_SPI            1
 157 #define KVM_ARM_IRQ_TYPE_PPI            2
 158
 159 /* out-of-kernel GIC cpu interrupt injection irq_number field */
 160 #define KVM_ARM_IRQ_CPU_IRQ             0
 161 #define KVM_ARM_IRQ_CPU_FIQ             1
 162
 163 /* Highest supported SPI, from VGIC_NR_IRQS */
 164 #define KVM_ARM_IRQ_GIC_MAX             127
 165
 166 /* PSCI interface */
 167 #define KVM_PSCI_FN_BASE                0x95c1ba5e
 168 #define KVM_PSCI_FN(n)                  (KVM_PSCI_FN_BASE + (n))
 169
 170 #define KVM_PSCI_FN_CPU_SUSPEND         KVM_PSCI_FN(0)
 171 #define KVM_PSCI_FN_CPU_OFF             KVM_PSCI_FN(1)
 172 #define KVM_PSCI_FN_CPU_ON              KVM_PSCI_FN(2)
 173 #define KVM_PSCI_FN_MIGRATE             KVM_PSCI_FN(3)
 174
 175 #define KVM_PSCI_RET_SUCCESS            0
 176 #define KVM_PSCI_RET_NI                 ((unsigned long)-1)
 177 #define KVM_PSCI_RET_INVAL              ((unsigned long)-2)
 178 #define KVM_PSCI_RET_DENIED             ((unsigned long)-3)
 179
 180 #endif /* __ARM_KVM_H__ */