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 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 98 struct kvm_vcpu_init { 99 __u32 target; 100 __u32 features[7]; 101 }; 102 103 struct kvm_sregs { 104 }; 105 106 struct 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 16 123 struct 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 }; 129 130 struct 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) 141 142 struct kvm_sync_regs { 143 }; 144 145 struct 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 #ifndef __KERNEL__ 230 #define KVM_ARM_IRQ_GIC_MAX 127 231 #endif 232 233 /* One single KVM irqchip, ie. the VGIC */ 234 #define KVM_NR_IRQCHIPS 1 235 236 /* PSCI interface */ 237 #define KVM_PSCI_FN_BASE 0x95c1ba5e 238 #define KVM_PSCI_FN(n) (KVM_PSCI_FN_BASE + (n)) 239 240 #define KVM_PSCI_FN_CPU_SUSPEND KVM_PSCI_FN(0) 241 #define KVM_PSCI_FN_CPU_OFF KVM_PSCI_FN(1) 242 #define KVM_PSCI_FN_CPU_ON KVM_PSCI_FN(2) 243 #define KVM_PSCI_FN_MIGRATE KVM_PSCI_FN(3) 244 245 #define KVM_PSCI_RET_SUCCESS PSCI_RET_SUCCESS 246 #define KVM_PSCI_RET_NI PSCI_RET_NOT_SUPPORTED 247 #define KVM_PSCI_RET_INVAL PSCI_RET_INVALID_PARAMS 248 #define KVM_PSCI_RET_DENIED PSCI_RET_DENIED 249 250 #endif 251 252 #endif /* __ARM_KVM_H__ */ 253