LXR qemu/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 <asm/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
  45struct 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
  98struct kvm_vcpu_init {
  99        __u32 target;
 100        __u32 features[7];
 101};
 102
 103struct kvm_sregs {
 104};
 105
 106struct kvm_fpu {
 107};
 108
 109/*
 110 * See v8 ARM ARM D7.3: Debug Registers
 111 *
 112 * The architectural limit is 16 debug registers of each type although
 113 * in practice there are usually less (see ID_AA64DFR0_EL1).
 114 *
 115 * Although the control registers are architecturally defined as 32
 116 * bits wide we use a 64 bit structure here to keep parity with
 117 * KVM_GET/SET_ONE_REG behaviour which treats all system registers as
 118 * 64 bit values. It also allows for the possibility of the
 119 * architecture expanding the control registers without having to
 120 * change the userspace ABI.
 121 */
 122#define KVM_ARM_MAX_DBG_REGS 16
 123struct kvm_guest_debug_arch {
 124        __u64 dbg_bcr[KVM_ARM_MAX_DBG_REGS];
 125        __u64 dbg_bvr[KVM_ARM_MAX_DBG_REGS];
 126        __u64 dbg_wcr[KVM_ARM_MAX_DBG_REGS];
 127        __u64 dbg_wvr[KVM_ARM_MAX_DBG_REGS];
 128};
 129
 130struct kvm_debug_exit_arch {
 131        __u32 hsr;
 132        __u64 far;      /* used for watchpoints */
 133};
 134
 135/*
 136 * Architecture specific defines for kvm_guest_debug->control
 137 */
 138
 139#define KVM_GUESTDBG_USE_SW_BP          (1 << 16)
 140#define KVM_GUESTDBG_USE_HW             (1 << 17)
 141
 142struct kvm_sync_regs {
 143};
 144
 145struct kvm_arch_memory_slot {
 146};
 147
 148/* If you need to interpret the index values, here is the key: */
 149#define KVM_REG_ARM_COPROC_MASK         0x000000000FFF0000
 150#define KVM_REG_ARM_COPROC_SHIFT        16
 151
 152/* Normal registers are mapped as coprocessor 16. */
 153#define KVM_REG_ARM_CORE                (0x0010 << KVM_REG_ARM_COPROC_SHIFT)
 154#define KVM_REG_ARM_CORE_REG(name)      (offsetof(struct kvm_regs, name) / sizeof(__u32))
 155
 156/* Some registers need more space to represent values. */
 157#define KVM_REG_ARM_DEMUX               (0x0011 << KVM_REG_ARM_COPROC_SHIFT)
 158#define KVM_REG_ARM_DEMUX_ID_MASK       0x000000000000FF00
 159#define KVM_REG_ARM_DEMUX_ID_SHIFT      8
 160#define KVM_REG_ARM_DEMUX_ID_CCSIDR     (0x00 << KVM_REG_ARM_DEMUX_ID_SHIFT)
 161#define KVM_REG_ARM_DEMUX_VAL_MASK      0x00000000000000FF
 162#define KVM_REG_ARM_DEMUX_VAL_SHIFT     0
 163
 164/* AArch64 system registers */
 165#define KVM_REG_ARM64_SYSREG            (0x0013 << KVM_REG_ARM_COPROC_SHIFT)
 166#define KVM_REG_ARM64_SYSREG_OP0_MASK   0x000000000000c000
 167#define KVM_REG_ARM64_SYSREG_OP0_SHIFT  14
 168#define KVM_REG_ARM64_SYSREG_OP1_MASK   0x0000000000003800
 169#define KVM_REG_ARM64_SYSREG_OP1_SHIFT  11
 170#define KVM_REG_ARM64_SYSREG_CRN_MASK   0x0000000000000780
 171#define KVM_REG_ARM64_SYSREG_CRN_SHIFT  7
 172#define KVM_REG_ARM64_SYSREG_CRM_MASK   0x0000000000000078
 173#define KVM_REG_ARM64_SYSREG_CRM_SHIFT  3
 174#define KVM_REG_ARM64_SYSREG_OP2_MASK   0x0000000000000007
 175#define KVM_REG_ARM64_SYSREG_OP2_SHIFT  0
 176
 177#define ARM64_SYS_REG_SHIFT_MASK(x,n) \
 178        (((x) << KVM_REG_ARM64_SYSREG_ ## n ## _SHIFT) & \
 179        KVM_REG_ARM64_SYSREG_ ## n ## _MASK)
 180
 181#define __ARM64_SYS_REG(op0,op1,crn,crm,op2) \
 182        (KVM_REG_ARM64 | KVM_REG_ARM64_SYSREG | \
 183        ARM64_SYS_REG_SHIFT_MASK(op0, OP0) | \
 184        ARM64_SYS_REG_SHIFT_MASK(op1, OP1) | \
 185        ARM64_SYS_REG_SHIFT_MASK(crn, CRN) | \
 186        ARM64_SYS_REG_SHIFT_MASK(crm, CRM) | \
 187        ARM64_SYS_REG_SHIFT_MASK(op2, OP2))
 188
 189#define ARM64_SYS_REG(...) (__ARM64_SYS_REG(__VA_ARGS__) | KVM_REG_SIZE_U64)
 190
 191#define KVM_REG_ARM_TIMER_CTL           ARM64_SYS_REG(3, 3, 14, 3, 1)
 192#define KVM_REG_ARM_TIMER_CNT           ARM64_SYS_REG(3, 3, 14, 3, 2)
 193#define KVM_REG_ARM_TIMER_CVAL          ARM64_SYS_REG(3, 3, 14, 0, 2)
 194
 195/* Device Control API: ARM VGIC */
 196#define KVM_DEV_ARM_VGIC_GRP_ADDR       0
 197#define KVM_DEV_ARM_VGIC_GRP_DIST_REGS  1
 198#define KVM_DEV_ARM_VGIC_GRP_CPU_REGS   2
 199#define   KVM_DEV_ARM_VGIC_CPUID_SHIFT  32
 200#define   KVM_DEV_ARM_VGIC_CPUID_MASK   (0xffULL << KVM_DEV_ARM_VGIC_CPUID_SHIFT)
 201#define   KVM_DEV_ARM_VGIC_OFFSET_SHIFT 0
 202#define   KVM_DEV_ARM_VGIC_OFFSET_MASK  (0xffffffffULL << KVM_DEV_ARM_VGIC_OFFSET_SHIFT)
 203#define KVM_DEV_ARM_VGIC_GRP_NR_IRQS    3
 204#define KVM_DEV_ARM_VGIC_GRP_CTRL       4
 205#define   KVM_DEV_ARM_VGIC_CTRL_INIT    0
 206
 207/* KVM_IRQ_LINE irq field index values */
 208#define KVM_ARM_IRQ_TYPE_SHIFT          24
 209#define KVM_ARM_IRQ_TYPE_MASK           0xff
 210#define KVM_ARM_IRQ_VCPU_SHIFT          16
 211#define KVM_ARM_IRQ_VCPU_MASK           0xff
 212#define KVM_ARM_IRQ_NUM_SHIFT           0
 213#define KVM_ARM_IRQ_NUM_MASK            0xffff
 214
 215/* irq_type field */
 216#define KVM_ARM_IRQ_TYPE_CPU            0
 217#define KVM_ARM_IRQ_TYPE_SPI            1
 218#define KVM_ARM_IRQ_TYPE_PPI            2
 219
 220/* out-of-kernel GIC cpu interrupt injection irq_number field */
 221#define KVM_ARM_IRQ_CPU_IRQ             0
 222#define KVM_ARM_IRQ_CPU_FIQ             1
 223
 224/*
 225 * This used to hold the highest supported SPI, but it is now obsolete
 226 * and only here to provide source code level compatibility with older
 227 * userland. The highest SPI number can be set via KVM_DEV_ARM_VGIC_GRP_NR_IRQS.
 228 */
 229#define KVM_ARM_IRQ_GIC_MAX             127
 230
 231/* One single KVM irqchip, ie. the VGIC */
 232#define KVM_NR_IRQCHIPS          1
 233
 234/* PSCI interface */
 235#define KVM_PSCI_FN_BASE                0x95c1ba5e
 236#define KVM_PSCI_FN(n)                  (KVM_PSCI_FN_BASE + (n))
 237
 238#define KVM_PSCI_FN_CPU_SUSPEND         KVM_PSCI_FN(0)
 239#define KVM_PSCI_FN_CPU_OFF             KVM_PSCI_FN(1)
 240#define KVM_PSCI_FN_CPU_ON              KVM_PSCI_FN(2)
 241#define KVM_PSCI_FN_MIGRATE             KVM_PSCI_FN(3)
 242
 243#define KVM_PSCI_RET_SUCCESS            PSCI_RET_SUCCESS
 244#define KVM_PSCI_RET_NI                 PSCI_RET_NOT_SUPPORTED
 245#define KVM_PSCI_RET_INVAL              PSCI_RET_INVALID_PARAMS
 246#define KVM_PSCI_RET_DENIED             PSCI_RET_DENIED
 247
 248#endif
 249
 250#endif /* __ARM_KVM_H__ */
 251