1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * Copyright (C) 2012 - Virtual Open Systems and Columbia University 4 * Author: Christoffer Dall <c.dall@virtualopensystems.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License, version 2, as 8 * published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 18 */ 19 20 #ifndef __ARM_KVM_H__ 21 #define __ARM_KVM_H__ 22 23 #include <linux/types.h> 24 #include <linux/psci.h> 25 #include <asm/ptrace.h> 26 27 #define __KVM_HAVE_GUEST_DEBUG 28 #define __KVM_HAVE_IRQ_LINE 29 #define __KVM_HAVE_READONLY_MEM 30 #define __KVM_HAVE_VCPU_EVENTS 31 32 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 33 34 #define KVM_REG_SIZE(id) \ 35 (1U << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 36 37 /* Valid for svc_regs, abt_regs, und_regs, irq_regs in struct kvm_regs */ 38 #define KVM_ARM_SVC_sp svc_regs[0] 39 #define KVM_ARM_SVC_lr svc_regs[1] 40 #define KVM_ARM_SVC_spsr svc_regs[2] 41 #define KVM_ARM_ABT_sp abt_regs[0] 42 #define KVM_ARM_ABT_lr abt_regs[1] 43 #define KVM_ARM_ABT_spsr abt_regs[2] 44 #define KVM_ARM_UND_sp und_regs[0] 45 #define KVM_ARM_UND_lr und_regs[1] 46 #define KVM_ARM_UND_spsr und_regs[2] 47 #define KVM_ARM_IRQ_sp irq_regs[0] 48 #define KVM_ARM_IRQ_lr irq_regs[1] 49 #define KVM_ARM_IRQ_spsr irq_regs[2] 50 51 /* Valid only for fiq_regs in struct kvm_regs */ 52 #define KVM_ARM_FIQ_r8 fiq_regs[0] 53 #define KVM_ARM_FIQ_r9 fiq_regs[1] 54 #define KVM_ARM_FIQ_r10 fiq_regs[2] 55 #define KVM_ARM_FIQ_fp fiq_regs[3] 56 #define KVM_ARM_FIQ_ip fiq_regs[4] 57 #define KVM_ARM_FIQ_sp fiq_regs[5] 58 #define KVM_ARM_FIQ_lr fiq_regs[6] 59 #define KVM_ARM_FIQ_spsr fiq_regs[7] 60 61 struct kvm_regs { 62 struct pt_regs usr_regs; /* R0_usr - R14_usr, PC, CPSR */ 63 unsigned long svc_regs[3]; /* SP_svc, LR_svc, SPSR_svc */ 64 unsigned long abt_regs[3]; /* SP_abt, LR_abt, SPSR_abt */ 65 unsigned long und_regs[3]; /* SP_und, LR_und, SPSR_und */ 66 unsigned long irq_regs[3]; /* SP_irq, LR_irq, SPSR_irq */ 67 unsigned long fiq_regs[8]; /* R8_fiq - R14_fiq, SPSR_fiq */ 68 }; 69 70 /* Supported Processor Types */ 71 #define KVM_ARM_TARGET_CORTEX_A15 0 72 #define KVM_ARM_TARGET_CORTEX_A7 1 73 #define KVM_ARM_NUM_TARGETS 2 74 75 /* KVM_ARM_SET_DEVICE_ADDR ioctl id encoding */ 76 #define KVM_ARM_DEVICE_TYPE_SHIFT 0 77 #define KVM_ARM_DEVICE_TYPE_MASK (0xffff << KVM_ARM_DEVICE_TYPE_SHIFT) 78 #define KVM_ARM_DEVICE_ID_SHIFT 16 79 #define KVM_ARM_DEVICE_ID_MASK (0xffff << KVM_ARM_DEVICE_ID_SHIFT) 80 81 /* Supported device IDs */ 82 #define KVM_ARM_DEVICE_VGIC_V2 0 83 84 /* Supported VGIC address types */ 85 #define KVM_VGIC_V2_ADDR_TYPE_DIST 0 86 #define KVM_VGIC_V2_ADDR_TYPE_CPU 1 87 88 #define KVM_VGIC_V2_DIST_SIZE 0x1000 89 #define KVM_VGIC_V2_CPU_SIZE 0x2000 90 91 /* Supported VGICv3 address types */ 92 #define KVM_VGIC_V3_ADDR_TYPE_DIST 2 93 #define KVM_VGIC_V3_ADDR_TYPE_REDIST 3 94 #define KVM_VGIC_ITS_ADDR_TYPE 4 95 #define KVM_VGIC_V3_ADDR_TYPE_REDIST_REGION 5 96 97 #define KVM_VGIC_V3_DIST_SIZE SZ_64K 98 #define KVM_VGIC_V3_REDIST_SIZE (2 * SZ_64K) 99 #define KVM_VGIC_V3_ITS_SIZE (2 * SZ_64K) 100 101 #define KVM_ARM_VCPU_POWER_OFF 0 /* CPU is started in OFF state */ 102 #define KVM_ARM_VCPU_PSCI_0_2 1 /* CPU uses PSCI v0.2 */ 103 104 struct kvm_vcpu_init { 105 __u32 target; 106 __u32 features[7]; 107 }; 108 109 struct kvm_sregs { 110 }; 111 112 struct kvm_fpu { 113 }; 114 115 struct kvm_guest_debug_arch { 116 }; 117 118 struct kvm_debug_exit_arch { 119 }; 120 121 struct kvm_sync_regs { 122 /* Used with KVM_CAP_ARM_USER_IRQ */ 123 __u64 device_irq_level; 124 }; 125 126 struct kvm_arch_memory_slot { 127 }; 128 129 /* for KVM_GET/SET_VCPU_EVENTS */ 130 struct kvm_vcpu_events { 131 struct { 132 __u8 serror_pending; 133 __u8 serror_has_esr; 134 /* Align it to 8 bytes */ 135 __u8 pad[6]; 136 __u64 serror_esr; 137 } exception; 138 __u32 reserved[12]; 139 }; 140 141 /* If you need to interpret the index values, here is the key: */ 142 #define KVM_REG_ARM_COPROC_MASK 0x000000000FFF0000 143 #define KVM_REG_ARM_COPROC_SHIFT 16 144 #define KVM_REG_ARM_32_OPC2_MASK 0x0000000000000007 145 #define KVM_REG_ARM_32_OPC2_SHIFT 0 146 #define KVM_REG_ARM_OPC1_MASK 0x0000000000000078 147 #define KVM_REG_ARM_OPC1_SHIFT 3 148 #define KVM_REG_ARM_CRM_MASK 0x0000000000000780 149 #define KVM_REG_ARM_CRM_SHIFT 7 150 #define KVM_REG_ARM_32_CRN_MASK 0x0000000000007800 151 #define KVM_REG_ARM_32_CRN_SHIFT 11 152 /* 153 * For KVM currently all guest registers are nonsecure, but we reserve a bit 154 * in the encoding to distinguish secure from nonsecure for AArch32 system 155 * registers that are banked by security. This is 1 for the secure banked 156 * register, and 0 for the nonsecure banked register or if the register is 157 * not banked by security. 158 */ 159 #define KVM_REG_ARM_SECURE_MASK 0x0000000010000000 160 #define KVM_REG_ARM_SECURE_SHIFT 28 161 162 #define ARM_CP15_REG_SHIFT_MASK(x,n) \ 163 (((x) << KVM_REG_ARM_ ## n ## _SHIFT) & KVM_REG_ARM_ ## n ## _MASK) 164 165 #define __ARM_CP15_REG(op1,crn,crm,op2) \ 166 (KVM_REG_ARM | (15 << KVM_REG_ARM_COPROC_SHIFT) | \ 167 ARM_CP15_REG_SHIFT_MASK(op1, OPC1) | \ 168 ARM_CP15_REG_SHIFT_MASK(crn, 32_CRN) | \ 169 ARM_CP15_REG_SHIFT_MASK(crm, CRM) | \ 170 ARM_CP15_REG_SHIFT_MASK(op2, 32_OPC2)) 171 172 #define ARM_CP15_REG32(...) (__ARM_CP15_REG(__VA_ARGS__) | KVM_REG_SIZE_U32) 173 174 #define __ARM_CP15_REG64(op1,crm) \ 175 (__ARM_CP15_REG(op1, 0, crm, 0) | KVM_REG_SIZE_U64) 176 #define ARM_CP15_REG64(...) __ARM_CP15_REG64(__VA_ARGS__) 177 178 /* PL1 Physical Timer Registers */ 179 #define KVM_REG_ARM_PTIMER_CTL ARM_CP15_REG32(0, 14, 2, 1) 180 #define KVM_REG_ARM_PTIMER_CNT ARM_CP15_REG64(0, 14) 181 #define KVM_REG_ARM_PTIMER_CVAL ARM_CP15_REG64(2, 14) 182 183 /* Virtual Timer Registers */ 184 #define KVM_REG_ARM_TIMER_CTL ARM_CP15_REG32(0, 14, 3, 1) 185 #define KVM_REG_ARM_TIMER_CNT ARM_CP15_REG64(1, 14) 186 #define KVM_REG_ARM_TIMER_CVAL ARM_CP15_REG64(3, 14) 187 188 /* Normal registers are mapped as coprocessor 16. */ 189 #define KVM_REG_ARM_CORE (0x0010 << KVM_REG_ARM_COPROC_SHIFT) 190 #define KVM_REG_ARM_CORE_REG(name) (offsetof(struct kvm_regs, name) / 4) 191 192 /* Some registers need more space to represent values. */ 193 #define KVM_REG_ARM_DEMUX (0x0011 << KVM_REG_ARM_COPROC_SHIFT) 194 #define KVM_REG_ARM_DEMUX_ID_MASK 0x000000000000FF00 195 #define KVM_REG_ARM_DEMUX_ID_SHIFT 8 196 #define KVM_REG_ARM_DEMUX_ID_CCSIDR (0x00 << KVM_REG_ARM_DEMUX_ID_SHIFT) 197 #define KVM_REG_ARM_DEMUX_VAL_MASK 0x00000000000000FF 198 #define KVM_REG_ARM_DEMUX_VAL_SHIFT 0 199 200 /* VFP registers: we could overload CP10 like ARM does, but that's ugly. */ 201 #define KVM_REG_ARM_VFP (0x0012 << KVM_REG_ARM_COPROC_SHIFT) 202 #define KVM_REG_ARM_VFP_MASK 0x000000000000FFFF 203 #define KVM_REG_ARM_VFP_BASE_REG 0x0 204 #define KVM_REG_ARM_VFP_FPSID 0x1000 205 #define KVM_REG_ARM_VFP_FPSCR 0x1001 206 #define KVM_REG_ARM_VFP_MVFR1 0x1006 207 #define KVM_REG_ARM_VFP_MVFR0 0x1007 208 #define KVM_REG_ARM_VFP_FPEXC 0x1008 209 #define KVM_REG_ARM_VFP_FPINST 0x1009 210 #define KVM_REG_ARM_VFP_FPINST2 0x100A 211 212 /* KVM-as-firmware specific pseudo-registers */ 213 #define KVM_REG_ARM_FW (0x0014 << KVM_REG_ARM_COPROC_SHIFT) 214 #define KVM_REG_ARM_FW_REG(r) (KVM_REG_ARM | KVM_REG_SIZE_U64 | \ 215 KVM_REG_ARM_FW | ((r) & 0xffff)) 216 #define KVM_REG_ARM_PSCI_VERSION KVM_REG_ARM_FW_REG(0) 217 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1 KVM_REG_ARM_FW_REG(1) 218 /* Higher values mean better protection. */ 219 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1_NOT_AVAIL 0 220 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1_AVAIL 1 221 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_1_NOT_REQUIRED 2 222 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2 KVM_REG_ARM_FW_REG(2) 223 /* Higher values mean better protection. */ 224 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_NOT_AVAIL 0 225 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_UNKNOWN 1 226 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_AVAIL 2 227 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_NOT_REQUIRED 3 228 #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_ENABLED (1U << 4) 229 230 /* Device Control API: ARM VGIC */ 231 #define KVM_DEV_ARM_VGIC_GRP_ADDR 0 232 #define KVM_DEV_ARM_VGIC_GRP_DIST_REGS 1 233 #define KVM_DEV_ARM_VGIC_GRP_CPU_REGS 2 234 #define KVM_DEV_ARM_VGIC_CPUID_SHIFT 32 235 #define KVM_DEV_ARM_VGIC_CPUID_MASK (0xffULL << KVM_DEV_ARM_VGIC_CPUID_SHIFT) 236 #define KVM_DEV_ARM_VGIC_V3_MPIDR_SHIFT 32 237 #define KVM_DEV_ARM_VGIC_V3_MPIDR_MASK \ 238 (0xffffffffULL << KVM_DEV_ARM_VGIC_V3_MPIDR_SHIFT) 239 #define KVM_DEV_ARM_VGIC_OFFSET_SHIFT 0 240 #define KVM_DEV_ARM_VGIC_OFFSET_MASK (0xffffffffULL << KVM_DEV_ARM_VGIC_OFFSET_SHIFT) 241 #define KVM_DEV_ARM_VGIC_SYSREG_INSTR_MASK (0xffff) 242 #define KVM_DEV_ARM_VGIC_GRP_NR_IRQS 3 243 #define KVM_DEV_ARM_VGIC_GRP_CTRL 4 244 #define KVM_DEV_ARM_VGIC_GRP_REDIST_REGS 5 245 #define KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS 6 246 #define KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO 7 247 #define KVM_DEV_ARM_VGIC_GRP_ITS_REGS 8 248 #define KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT 10 249 #define KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_MASK \ 250 (0x3fffffULL << KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT) 251 #define KVM_DEV_ARM_VGIC_LINE_LEVEL_INTID_MASK 0x3ff 252 #define VGIC_LEVEL_INFO_LINE_LEVEL 0 253 254 /* Device Control API on vcpu fd */ 255 #define KVM_ARM_VCPU_PMU_V3_CTRL 0 256 #define KVM_ARM_VCPU_PMU_V3_IRQ 0 257 #define KVM_ARM_VCPU_PMU_V3_INIT 1 258 #define KVM_ARM_VCPU_TIMER_CTRL 1 259 #define KVM_ARM_VCPU_TIMER_IRQ_VTIMER 0 260 #define KVM_ARM_VCPU_TIMER_IRQ_PTIMER 1 261 262 #define KVM_DEV_ARM_VGIC_CTRL_INIT 0 263 #define KVM_DEV_ARM_ITS_SAVE_TABLES 1 264 #define KVM_DEV_ARM_ITS_RESTORE_TABLES 2 265 #define KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES 3 266 #define KVM_DEV_ARM_ITS_CTRL_RESET 4 267 268 /* KVM_IRQ_LINE irq field index values */ 269 #define KVM_ARM_IRQ_TYPE_SHIFT 24 270 #define KVM_ARM_IRQ_TYPE_MASK 0xff 271 #define KVM_ARM_IRQ_VCPU_SHIFT 16 272 #define KVM_ARM_IRQ_VCPU_MASK 0xff 273 #define KVM_ARM_IRQ_NUM_SHIFT 0 274 #define KVM_ARM_IRQ_NUM_MASK 0xffff 275 276 /* irq_type field */ 277 #define KVM_ARM_IRQ_TYPE_CPU 0 278 #define KVM_ARM_IRQ_TYPE_SPI 1 279 #define KVM_ARM_IRQ_TYPE_PPI 2 280 281 /* out-of-kernel GIC cpu interrupt injection irq_number field */ 282 #define KVM_ARM_IRQ_CPU_IRQ 0 283 #define KVM_ARM_IRQ_CPU_FIQ 1 284 285 /* 286 * This used to hold the highest supported SPI, but it is now obsolete 287 * and only here to provide source code level compatibility with older 288 * userland. The highest SPI number can be set via KVM_DEV_ARM_VGIC_GRP_NR_IRQS. 289 */ 290 #ifndef __KERNEL__ 291 #define KVM_ARM_IRQ_GIC_MAX 127 292 #endif 293 294 /* One single KVM irqchip, ie. the VGIC */ 295 #define KVM_NR_IRQCHIPS 1 296 297 /* PSCI interface */ 298 #define KVM_PSCI_FN_BASE 0x95c1ba5e 299 #define KVM_PSCI_FN(n) (KVM_PSCI_FN_BASE + (n)) 300 301 #define KVM_PSCI_FN_CPU_SUSPEND KVM_PSCI_FN(0) 302 #define KVM_PSCI_FN_CPU_OFF KVM_PSCI_FN(1) 303 #define KVM_PSCI_FN_CPU_ON KVM_PSCI_FN(2) 304 #define KVM_PSCI_FN_MIGRATE KVM_PSCI_FN(3) 305 306 #define KVM_PSCI_RET_SUCCESS PSCI_RET_SUCCESS 307 #define KVM_PSCI_RET_NI PSCI_RET_NOT_SUPPORTED 308 #define KVM_PSCI_RET_INVAL PSCI_RET_INVALID_PARAMS 309 #define KVM_PSCI_RET_DENIED PSCI_RET_DENIED 310 311 #endif /* __ARM_KVM_H__ */ 312