linux-headers/asm-arm64/kvm.h

   1 /*
   2  * Copyright (C) 2012,2013 - ARM Ltd
   3  * Author: Marc Zyngier <marc.zyngier@arm.com>
   4  *
   5  * Derived from arch/arm/include/uapi/asm/kvm.h:
   6  * Copyright (C) 2012 - Virtual Open Systems and Columbia University
   7  * Author: Christoffer Dall <c.dall@virtualopensystems.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #ifndef __ARM_KVM_H__
  23 #define __ARM_KVM_H__
  24
  25 #define KVM_SPSR_EL1    0
  26 #define KVM_SPSR_SVC    KVM_SPSR_EL1
  27 #define KVM_SPSR_ABT    1
  28 #define KVM_SPSR_UND    2
  29 #define KVM_SPSR_IRQ    3
  30 #define KVM_SPSR_FIQ    4
  31 #define KVM_NR_SPSR     5
  32
  33 #ifndef __ASSEMBLY__
  34 #include <linux/psci.h>
  35 #include <linux/types.h>
  36 #include <asm/ptrace.h>
  37
  38 #define __KVM_HAVE_GUEST_DEBUG
  39 #define __KVM_HAVE_IRQ_LINE
  40 #define __KVM_HAVE_READONLY_MEM
  41
  42 #define KVM_REG_SIZE(id)                                                \
  43         (1U << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT))
  44
  45 struct kvm_regs {
  46         struct user_pt_regs regs;       /* sp = sp_el0 */
  47
  48         __u64   sp_el1;
  49         __u64   elr_el1;
  50
  51         __u64   spsr[KVM_NR_SPSR];
  52
  53         struct user_fpsimd_state fp_regs;
  54 };
  55
  56 /*
  57  * Supported CPU Targets - Adding a new target type is not recommended,
  58  * unless there are some special registers not supported by the
  59  * genericv8 syreg table.
  60  */
  61 #define KVM_ARM_TARGET_AEM_V8           0
  62 #define KVM_ARM_TARGET_FOUNDATION_V8    1
  63 #define KVM_ARM_TARGET_CORTEX_A57       2
  64 #define KVM_ARM_TARGET_XGENE_POTENZA    3
  65 #define KVM_ARM_TARGET_CORTEX_A53       4
  66 /* Generic ARM v8 target */
  67 #define KVM_ARM_TARGET_GENERIC_V8       5
  68
  69 #define KVM_ARM_NUM_TARGETS             6
  70
  71 /* KVM_ARM_SET_DEVICE_ADDR ioctl id encoding */
  72 #define KVM_ARM_DEVICE_TYPE_SHIFT       0
  73 #define KVM_ARM_DEVICE_TYPE_MASK        (0xffff << KVM_ARM_DEVICE_TYPE_SHIFT)
  74 #define KVM_ARM_DEVICE_ID_SHIFT         16
  75 #define KVM_ARM_DEVICE_ID_MASK          (0xffff << KVM_ARM_DEVICE_ID_SHIFT)
  76
  77 /* Supported device IDs */
  78 #define KVM_ARM_DEVICE_VGIC_V2          0
  79
  80 /* Supported VGIC address types  */
  81 #define KVM_VGIC_V2_ADDR_TYPE_DIST      0
  82 #define KVM_VGIC_V2_ADDR_TYPE_CPU       1
  83
  84 #define KVM_VGIC_V2_DIST_SIZE           0x1000
  85 #define KVM_VGIC_V2_CPU_SIZE            0x2000
  86
  87 /* Supported VGICv3 address types  */
  88 #define KVM_VGIC_V3_ADDR_TYPE_DIST      2
  89 #define KVM_VGIC_V3_ADDR_TYPE_REDIST    3
  90
  91 #define KVM_VGIC_V3_DIST_SIZE           SZ_64K
  92 #define KVM_VGIC_V3_REDIST_SIZE         (2 * SZ_64K)
  93
  94 #define KVM_ARM_VCPU_POWER_OFF          0 /* CPU is started in OFF state */
  95 #define KVM_ARM_VCPU_EL1_32BIT          1 /* CPU running a 32bit VM */
  96 #define KVM_ARM_VCPU_PSCI_0_2           2 /* CPU uses PSCI v0.2 */
  97 #define KVM_ARM_VCPU_PMU_V3             3 /* Support guest PMUv3 */
  98
  99 struct kvm_vcpu_init {
 100         __u32 target;
 101         __u32 features[7];
 102 };
 103
 104 struct kvm_sregs {
 105 };
 106
 107 struct kvm_fpu {
 108 };
 109
 110 /*
 111  * See v8 ARM ARM D7.3: Debug Registers
 112  *
 113  * The architectural limit is 16 debug registers of each type although
 114  * in practice there are usually less (see ID_AA64DFR0_EL1).
 115  *
 116  * Although the control registers are architecturally defined as 32
 117  * bits wide we use a 64 bit structure here to keep parity with
 118  * KVM_GET/SET_ONE_REG behaviour which treats all system registers as
 119  * 64 bit values. It also allows for the possibility of the
 120  * architecture expanding the control registers without having to
 121  * change the userspace ABI.
 122  */
 123 #define KVM_ARM_MAX_DBG_REGS 16
 124 struct kvm_guest_debug_arch {
 125         __u64 dbg_bcr[KVM_ARM_MAX_DBG_REGS];
 126         __u64 dbg_bvr[KVM_ARM_MAX_DBG_REGS];
 127         __u64 dbg_wcr[KVM_ARM_MAX_DBG_REGS];
 128         __u64 dbg_wvr[KVM_ARM_MAX_DBG_REGS];
 129 };
 130
 131 struct kvm_debug_exit_arch {
 132         __u32 hsr;
 133         __u64 far;      /* used for watchpoints */
 134 };
 135
 136 /*
 137  * Architecture specific defines for kvm_guest_debug->control
 138  */
 139
 140 #define KVM_GUESTDBG_USE_SW_BP          (1 << 16)
 141 #define KVM_GUESTDBG_USE_HW             (1 << 17)
 142
 143 struct kvm_sync_regs {
 144 };
 145
 146 struct kvm_arch_memory_slot {
 147 };
 148
 149 /* If you need to interpret the index values, here is the key: */
 150 #define KVM_REG_ARM_COPROC_MASK         0x000000000FFF0000
 151 #define KVM_REG_ARM_COPROC_SHIFT        16
 152
 153 /* Normal registers are mapped as coprocessor 16. */
 154 #define KVM_REG_ARM_CORE                (0x0010 << KVM_REG_ARM_COPROC_SHIFT)
 155 #define KVM_REG_ARM_CORE_REG(name)      (offsetof(struct kvm_regs, name) / sizeof(__u32))
 156
 157 /* Some registers need more space to represent values. */
 158 #define KVM_REG_ARM_DEMUX               (0x0011 << KVM_REG_ARM_COPROC_SHIFT)
 159 #define KVM_REG_ARM_DEMUX_ID_MASK       0x000000000000FF00
 160 #define KVM_REG_ARM_DEMUX_ID_SHIFT      8
 161 #define KVM_REG_ARM_DEMUX_ID_CCSIDR     (0x00 << KVM_REG_ARM_DEMUX_ID_SHIFT)
 162 #define KVM_REG_ARM_DEMUX_VAL_MASK      0x00000000000000FF
 163 #define KVM_REG_ARM_DEMUX_VAL_SHIFT     0
 164
 165 /* AArch64 system registers */
 166 #define KVM_REG_ARM64_SYSREG            (0x0013 << KVM_REG_ARM_COPROC_SHIFT)
 167 #define KVM_REG_ARM64_SYSREG_OP0_MASK   0x000000000000c000
 168 #define KVM_REG_ARM64_SYSREG_OP0_SHIFT  14
 169 #define KVM_REG_ARM64_SYSREG_OP1_MASK   0x0000000000003800
 170 #define KVM_REG_ARM64_SYSREG_OP1_SHIFT  11
 171 #define KVM_REG_ARM64_SYSREG_CRN_MASK   0x0000000000000780
 172 #define KVM_REG_ARM64_SYSREG_CRN_SHIFT  7
 173 #define KVM_REG_ARM64_SYSREG_CRM_MASK   0x0000000000000078
 174 #define KVM_REG_ARM64_SYSREG_CRM_SHIFT  3
 175 #define KVM_REG_ARM64_SYSREG_OP2_MASK   0x0000000000000007
 176 #define KVM_REG_ARM64_SYSREG_OP2_SHIFT  0
 177
 178 #define ARM64_SYS_REG_SHIFT_MASK(x,n) \
 179         (((x) << KVM_REG_ARM64_SYSREG_ ## n ## _SHIFT) & \
 180         KVM_REG_ARM64_SYSREG_ ## n ## _MASK)
 181
 182 #define __ARM64_SYS_REG(op0,op1,crn,crm,op2) \
 183         (KVM_REG_ARM64 | KVM_REG_ARM64_SYSREG | \
 184         ARM64_SYS_REG_SHIFT_MASK(op0, OP0) | \
 185         ARM64_SYS_REG_SHIFT_MASK(op1, OP1) | \
 186         ARM64_SYS_REG_SHIFT_MASK(crn, CRN) | \
 187         ARM64_SYS_REG_SHIFT_MASK(crm, CRM) | \
 188         ARM64_SYS_REG_SHIFT_MASK(op2, OP2))
 189
 190 #define ARM64_SYS_REG(...) (__ARM64_SYS_REG(__VA_ARGS__) | KVM_REG_SIZE_U64)
 191
 192 #define KVM_REG_ARM_TIMER_CTL           ARM64_SYS_REG(3, 3, 14, 3, 1)
 193 #define KVM_REG_ARM_TIMER_CNT           ARM64_SYS_REG(3, 3, 14, 3, 2)
 194 #define KVM_REG_ARM_TIMER_CVAL          ARM64_SYS_REG(3, 3, 14, 0, 2)
 195
 196 /* Device Control API: ARM VGIC */
 197 #define KVM_DEV_ARM_VGIC_GRP_ADDR       0
 198 #define KVM_DEV_ARM_VGIC_GRP_DIST_REGS  1
 199 #define KVM_DEV_ARM_VGIC_GRP_CPU_REGS   2
 200 #define   KVM_DEV_ARM_VGIC_CPUID_SHIFT  32
 201 #define   KVM_DEV_ARM_VGIC_CPUID_MASK   (0xffULL << KVM_DEV_ARM_VGIC_CPUID_SHIFT)
 202 #define   KVM_DEV_ARM_VGIC_OFFSET_SHIFT 0
 203 #define   KVM_DEV_ARM_VGIC_OFFSET_MASK  (0xffffffffULL << KVM_DEV_ARM_VGIC_OFFSET_SHIFT)
 204 #define KVM_DEV_ARM_VGIC_GRP_NR_IRQS    3
 205 #define KVM_DEV_ARM_VGIC_GRP_CTRL       4
 206 #define   KVM_DEV_ARM_VGIC_CTRL_INIT    0
 207
 208 /* Device Control API on vcpu fd */
 209 #define KVM_ARM_VCPU_PMU_V3_CTRL        0
 210 #define   KVM_ARM_VCPU_PMU_V3_IRQ       0
 211 #define   KVM_ARM_VCPU_PMU_V3_INIT      1
 212
 213 /* KVM_IRQ_LINE irq field index values */
 214 #define KVM_ARM_IRQ_TYPE_SHIFT          24
 215 #define KVM_ARM_IRQ_TYPE_MASK           0xff
 216 #define KVM_ARM_IRQ_VCPU_SHIFT          16
 217 #define KVM_ARM_IRQ_VCPU_MASK           0xff
 218 #define KVM_ARM_IRQ_NUM_SHIFT           0
 219 #define KVM_ARM_IRQ_NUM_MASK            0xffff
 220
 221 /* irq_type field */
 222 #define KVM_ARM_IRQ_TYPE_CPU            0
 223 #define KVM_ARM_IRQ_TYPE_SPI            1
 224 #define KVM_ARM_IRQ_TYPE_PPI            2
 225
 226 /* out-of-kernel GIC cpu interrupt injection irq_number field */
 227 #define KVM_ARM_IRQ_CPU_IRQ             0
 228 #define KVM_ARM_IRQ_CPU_FIQ             1
 229
 230 /*
 231  * This used to hold the highest supported SPI, but it is now obsolete
 232  * and only here to provide source code level compatibility with older
 233  * userland. The highest SPI number can be set via KVM_DEV_ARM_VGIC_GRP_NR_IRQS.
 234  */
 235 #define KVM_ARM_IRQ_GIC_MAX             127
 236
 237 /* One single KVM irqchip, ie. the VGIC */
 238 #define KVM_NR_IRQCHIPS          1
 239
 240 /* PSCI interface */
 241 #define KVM_PSCI_FN_BASE                0x95c1ba5e
 242 #define KVM_PSCI_FN(n)                  (KVM_PSCI_FN_BASE + (n))
 243
 244 #define KVM_PSCI_FN_CPU_SUSPEND         KVM_PSCI_FN(0)
 245 #define KVM_PSCI_FN_CPU_OFF             KVM_PSCI_FN(1)
 246 #define KVM_PSCI_FN_CPU_ON              KVM_PSCI_FN(2)
 247 #define KVM_PSCI_FN_MIGRATE             KVM_PSCI_FN(3)
 248
 249 #define KVM_PSCI_RET_SUCCESS            PSCI_RET_SUCCESS
 250 #define KVM_PSCI_RET_NI                 PSCI_RET_NOT_SUPPORTED
 251 #define KVM_PSCI_RET_INVAL              PSCI_RET_INVALID_PARAMS
 252 #define KVM_PSCI_RET_DENIED             PSCI_RET_DENIED
 253
 254 #endif
 255
 256 #endif /* __ARM_KVM_H__ */