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 31 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 32 33 #define KVM_REG_SIZE(id) \ 34 (1U << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 35 36 /* Valid for svc_regs, abt_regs, und_regs, irq_regs in struct kvm_regs */ 37 #define KVM_ARM_SVC_sp svc_regs[0] 38 #define KVM_ARM_SVC_lr svc_regs[1] 39 #define KVM_ARM_SVC_spsr svc_regs[2] 40 #define KVM_ARM_ABT_sp abt_regs[0] 41 #define KVM_ARM_ABT_lr abt_regs[1] 42 #define KVM_ARM_ABT_spsr abt_regs[2] 43 #define KVM_ARM_UND_sp und_regs[0] 44 #define KVM_ARM_UND_lr und_regs[1] 45 #define KVM_ARM_UND_spsr und_regs[2] 46 #define KVM_ARM_IRQ_sp irq_regs[0] 47 #define KVM_ARM_IRQ_lr irq_regs[1] 48 #define KVM_ARM_IRQ_spsr irq_regs[2] 49 50 /* Valid only for fiq_regs in struct kvm_regs */ 51 #define KVM_ARM_FIQ_r8 fiq_regs[0] 52 #define KVM_ARM_FIQ_r9 fiq_regs[1] 53 #define KVM_ARM_FIQ_r10 fiq_regs[2] 54 #define KVM_ARM_FIQ_fp fiq_regs[3] 55 #define KVM_ARM_FIQ_ip fiq_regs[4] 56 #define KVM_ARM_FIQ_sp fiq_regs[5] 57 #define KVM_ARM_FIQ_lr fiq_regs[6] 58 #define KVM_ARM_FIQ_spsr fiq_regs[7] 59 60 struct kvm_regs { 61 struct pt_regs usr_regs; /* R0_usr - R14_usr, PC, CPSR */ 62 unsigned long svc_regs[3]; /* SP_svc, LR_svc, SPSR_svc */ 63 unsigned long abt_regs[3]; /* SP_abt, LR_abt, SPSR_abt */ 64 unsigned long und_regs[3]; /* SP_und, LR_und, SPSR_und */ 65 unsigned long irq_regs[3]; /* SP_irq, LR_irq, SPSR_irq */ 66 unsigned long fiq_regs[8]; /* R8_fiq - R14_fiq, SPSR_fiq */ 67 }; 68 69 /* Supported Processor Types */ 70 #define KVM_ARM_TARGET_CORTEX_A15 0 71 #define KVM_ARM_TARGET_CORTEX_A7 1 72 #define KVM_ARM_NUM_TARGETS 2 73 74 /* KVM_ARM_SET_DEVICE_ADDR ioctl id encoding */ 75 #define KVM_ARM_DEVICE_TYPE_SHIFT 0 76 #define KVM_ARM_DEVICE_TYPE_MASK (0xffff << KVM_ARM_DEVICE_TYPE_SHIFT) 77 #define KVM_ARM_DEVICE_ID_SHIFT 16 78 #define KVM_ARM_DEVICE_ID_MASK (0xffff << KVM_ARM_DEVICE_ID_SHIFT) 79 80 /* Supported device IDs */ 81 #define KVM_ARM_DEVICE_VGIC_V2 0 82 83 /* Supported VGIC address types */ 84 #define KVM_VGIC_V2_ADDR_TYPE_DIST 0 85 #define KVM_VGIC_V2_ADDR_TYPE_CPU 1 86 87 #define KVM_VGIC_V2_DIST_SIZE 0x1000 88 #define KVM_VGIC_V2_CPU_SIZE 0x2000 89 90 /* Supported VGICv3 address types */ 91 #define KVM_VGIC_V3_ADDR_TYPE_DIST 2 92 #define KVM_VGIC_V3_ADDR_TYPE_REDIST 3 93 #define KVM_VGIC_ITS_ADDR_TYPE 4 94 95 #define KVM_VGIC_V3_DIST_SIZE SZ_64K 96 #define KVM_VGIC_V3_REDIST_SIZE (2 * SZ_64K) 97 #define KVM_VGIC_V3_ITS_SIZE (2 * SZ_64K) 98 99 #define KVM_ARM_VCPU_POWER_OFF 0 /* CPU is started in OFF state */ 100 #define KVM_ARM_VCPU_PSCI_0_2 1 /* CPU uses PSCI v0.2 */ 101 102 struct kvm_vcpu_init { 103 __u32 target; 104 __u32 features[7]; 105 }; 106 107 struct kvm_sregs { 108 }; 109 110 struct kvm_fpu { 111 }; 112 113 struct kvm_guest_debug_arch { 114 }; 115 116 struct kvm_debug_exit_arch { 117 }; 118 119 struct kvm_sync_regs { 120 /* Used with KVM_CAP_ARM_USER_IRQ */ 121 __u64 device_irq_level; 122 }; 123 124 struct kvm_arch_memory_slot { 125 }; 126 127 /* If you need to interpret the index values, here is the key: */ 128 #define KVM_REG_ARM_COPROC_MASK 0x000000000FFF0000 129 #define KVM_REG_ARM_COPROC_SHIFT 16 130 #define KVM_REG_ARM_32_OPC2_MASK 0x0000000000000007 131 #define KVM_REG_ARM_32_OPC2_SHIFT 0 132 #define KVM_REG_ARM_OPC1_MASK 0x0000000000000078 133 #define KVM_REG_ARM_OPC1_SHIFT 3 134 #define KVM_REG_ARM_CRM_MASK 0x0000000000000780 135 #define KVM_REG_ARM_CRM_SHIFT 7 136 #define KVM_REG_ARM_32_CRN_MASK 0x0000000000007800 137 #define KVM_REG_ARM_32_CRN_SHIFT 11 138 /* 139 * For KVM currently all guest registers are nonsecure, but we reserve a bit 140 * in the encoding to distinguish secure from nonsecure for AArch32 system 141 * registers that are banked by security. This is 1 for the secure banked 142 * register, and 0 for the nonsecure banked register or if the register is 143 * not banked by security. 144 */ 145 #define KVM_REG_ARM_SECURE_MASK 0x0000000010000000 146 #define KVM_REG_ARM_SECURE_SHIFT 28 147 148 #define ARM_CP15_REG_SHIFT_MASK(x,n) \ 149 (((x) << KVM_REG_ARM_ ## n ## _SHIFT) & KVM_REG_ARM_ ## n ## _MASK) 150 151 #define __ARM_CP15_REG(op1,crn,crm,op2) \ 152 (KVM_REG_ARM | (15 << KVM_REG_ARM_COPROC_SHIFT) | \ 153 ARM_CP15_REG_SHIFT_MASK(op1, OPC1) | \ 154 ARM_CP15_REG_SHIFT_MASK(crn, 32_CRN) | \ 155 ARM_CP15_REG_SHIFT_MASK(crm, CRM) | \ 156 ARM_CP15_REG_SHIFT_MASK(op2, 32_OPC2)) 157 158 #define ARM_CP15_REG32(...) (__ARM_CP15_REG(__VA_ARGS__) | KVM_REG_SIZE_U32) 159 160 #define __ARM_CP15_REG64(op1,crm) \ 161 (__ARM_CP15_REG(op1, 0, crm, 0) | KVM_REG_SIZE_U64) 162 #define ARM_CP15_REG64(...) __ARM_CP15_REG64(__VA_ARGS__) 163 164 /* PL1 Physical Timer Registers */ 165 #define KVM_REG_ARM_PTIMER_CTL ARM_CP15_REG32(0, 14, 2, 1) 166 #define KVM_REG_ARM_PTIMER_CNT ARM_CP15_REG64(0, 14) 167 #define KVM_REG_ARM_PTIMER_CVAL ARM_CP15_REG64(2, 14) 168 169 /* Virtual Timer Registers */ 170 #define KVM_REG_ARM_TIMER_CTL ARM_CP15_REG32(0, 14, 3, 1) 171 #define KVM_REG_ARM_TIMER_CNT ARM_CP15_REG64(1, 14) 172 #define KVM_REG_ARM_TIMER_CVAL ARM_CP15_REG64(3, 14) 173 174 /* Normal registers are mapped as coprocessor 16. */ 175 #define KVM_REG_ARM_CORE (0x0010 << KVM_REG_ARM_COPROC_SHIFT) 176 #define KVM_REG_ARM_CORE_REG(name) (offsetof(struct kvm_regs, name) / 4) 177 178 /* Some registers need more space to represent values. */ 179 #define KVM_REG_ARM_DEMUX (0x0011 << KVM_REG_ARM_COPROC_SHIFT) 180 #define KVM_REG_ARM_DEMUX_ID_MASK 0x000000000000FF00 181 #define KVM_REG_ARM_DEMUX_ID_SHIFT 8 182 #define KVM_REG_ARM_DEMUX_ID_CCSIDR (0x00 << KVM_REG_ARM_DEMUX_ID_SHIFT) 183 #define KVM_REG_ARM_DEMUX_VAL_MASK 0x00000000000000FF 184 #define KVM_REG_ARM_DEMUX_VAL_SHIFT 0 185 186 /* VFP registers: we could overload CP10 like ARM does, but that's ugly. */ 187 #define KVM_REG_ARM_VFP (0x0012 << KVM_REG_ARM_COPROC_SHIFT) 188 #define KVM_REG_ARM_VFP_MASK 0x000000000000FFFF 189 #define KVM_REG_ARM_VFP_BASE_REG 0x0 190 #define KVM_REG_ARM_VFP_FPSID 0x1000 191 #define KVM_REG_ARM_VFP_FPSCR 0x1001 192 #define KVM_REG_ARM_VFP_MVFR1 0x1006 193 #define KVM_REG_ARM_VFP_MVFR0 0x1007 194 #define KVM_REG_ARM_VFP_FPEXC 0x1008 195 #define KVM_REG_ARM_VFP_FPINST 0x1009 196 #define KVM_REG_ARM_VFP_FPINST2 0x100A 197 198 /* KVM-as-firmware specific pseudo-registers */ 199 #define KVM_REG_ARM_FW (0x0014 << KVM_REG_ARM_COPROC_SHIFT) 200 #define KVM_REG_ARM_FW_REG(r) (KVM_REG_ARM | KVM_REG_SIZE_U64 | \ 201 KVM_REG_ARM_FW | ((r) & 0xffff)) 202 #define KVM_REG_ARM_PSCI_VERSION KVM_REG_ARM_FW_REG(0) 203 204 /* Device Control API: ARM VGIC */ 205 #define KVM_DEV_ARM_VGIC_GRP_ADDR 0 206 #define KVM_DEV_ARM_VGIC_GRP_DIST_REGS 1 207 #define KVM_DEV_ARM_VGIC_GRP_CPU_REGS 2 208 #define KVM_DEV_ARM_VGIC_CPUID_SHIFT 32 209 #define KVM_DEV_ARM_VGIC_CPUID_MASK (0xffULL << KVM_DEV_ARM_VGIC_CPUID_SHIFT) 210 #define KVM_DEV_ARM_VGIC_V3_MPIDR_SHIFT 32 211 #define KVM_DEV_ARM_VGIC_V3_MPIDR_MASK \ 212 (0xffffffffULL << KVM_DEV_ARM_VGIC_V3_MPIDR_SHIFT) 213 #define KVM_DEV_ARM_VGIC_OFFSET_SHIFT 0 214 #define KVM_DEV_ARM_VGIC_OFFSET_MASK (0xffffffffULL << KVM_DEV_ARM_VGIC_OFFSET_SHIFT) 215 #define KVM_DEV_ARM_VGIC_SYSREG_INSTR_MASK (0xffff) 216 #define KVM_DEV_ARM_VGIC_GRP_NR_IRQS 3 217 #define KVM_DEV_ARM_VGIC_GRP_CTRL 4 218 #define KVM_DEV_ARM_VGIC_GRP_REDIST_REGS 5 219 #define KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS 6 220 #define KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO 7 221 #define KVM_DEV_ARM_VGIC_GRP_ITS_REGS 8 222 #define KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT 10 223 #define KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_MASK \ 224 (0x3fffffULL << KVM_DEV_ARM_VGIC_LINE_LEVEL_INFO_SHIFT) 225 #define KVM_DEV_ARM_VGIC_LINE_LEVEL_INTID_MASK 0x3ff 226 #define VGIC_LEVEL_INFO_LINE_LEVEL 0 227 228 /* Device Control API on vcpu fd */ 229 #define KVM_ARM_VCPU_PMU_V3_CTRL 0 230 #define KVM_ARM_VCPU_PMU_V3_IRQ 0 231 #define KVM_ARM_VCPU_PMU_V3_INIT 1 232 #define KVM_ARM_VCPU_TIMER_CTRL 1 233 #define KVM_ARM_VCPU_TIMER_IRQ_VTIMER 0 234 #define KVM_ARM_VCPU_TIMER_IRQ_PTIMER 1 235 236 #define KVM_DEV_ARM_VGIC_CTRL_INIT 0 237 #define KVM_DEV_ARM_ITS_SAVE_TABLES 1 238 #define KVM_DEV_ARM_ITS_RESTORE_TABLES 2 239 #define KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES 3 240 #define KVM_DEV_ARM_ITS_CTRL_RESET 4 241 242 /* KVM_IRQ_LINE irq field index values */ 243 #define KVM_ARM_IRQ_TYPE_SHIFT 24 244 #define KVM_ARM_IRQ_TYPE_MASK 0xff 245 #define KVM_ARM_IRQ_VCPU_SHIFT 16 246 #define KVM_ARM_IRQ_VCPU_MASK 0xff 247 #define KVM_ARM_IRQ_NUM_SHIFT 0 248 #define KVM_ARM_IRQ_NUM_MASK 0xffff 249 250 /* irq_type field */ 251 #define KVM_ARM_IRQ_TYPE_CPU 0 252 #define KVM_ARM_IRQ_TYPE_SPI 1 253 #define KVM_ARM_IRQ_TYPE_PPI 2 254 255 /* out-of-kernel GIC cpu interrupt injection irq_number field */ 256 #define KVM_ARM_IRQ_CPU_IRQ 0 257 #define KVM_ARM_IRQ_CPU_FIQ 1 258 259 /* 260 * This used to hold the highest supported SPI, but it is now obsolete 261 * and only here to provide source code level compatibility with older 262 * userland. The highest SPI number can be set via KVM_DEV_ARM_VGIC_GRP_NR_IRQS. 263 */ 264 #define KVM_ARM_IRQ_GIC_MAX 127 265 266 /* One single KVM irqchip, ie. the VGIC */ 267 #define KVM_NR_IRQCHIPS 1 268 269 /* PSCI interface */ 270 #define KVM_PSCI_FN_BASE 0x95c1ba5e 271 #define KVM_PSCI_FN(n) (KVM_PSCI_FN_BASE + (n)) 272 273 #define KVM_PSCI_FN_CPU_SUSPEND KVM_PSCI_FN(0) 274 #define KVM_PSCI_FN_CPU_OFF KVM_PSCI_FN(1) 275 #define KVM_PSCI_FN_CPU_ON KVM_PSCI_FN(2) 276 #define KVM_PSCI_FN_MIGRATE KVM_PSCI_FN(3) 277 278 #define KVM_PSCI_RET_SUCCESS PSCI_RET_SUCCESS 279 #define KVM_PSCI_RET_NI PSCI_RET_NOT_SUPPORTED 280 #define KVM_PSCI_RET_INVAL PSCI_RET_INVALID_PARAMS 281 #define KVM_PSCI_RET_DENIED PSCI_RET_DENIED 282 283 #endif /* __ARM_KVM_H__ */ 284