1 /* 2 * Copyright (C) 2012 - Virtual Open Systems and Columbia University 3 * Author: Christoffer Dall <c.dall@virtualopensystems.com> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License, version 2, as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 17 */ 18 19 #ifndef __ARM_KVM_H__ 20 #define __ARM_KVM_H__ 21 22 #include <linux/types.h> 23 #include <asm/ptrace.h> 24 25 #define __KVM_HAVE_GUEST_DEBUG 26 #define __KVM_HAVE_IRQ_LINE 27 28 #define KVM_REG_SIZE(id) \ 29 (1U << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 30 31 /* Valid for svc_regs, abt_regs, und_regs, irq_regs in struct kvm_regs */ 32 #define KVM_ARM_SVC_sp svc_regs[0] 33 #define KVM_ARM_SVC_lr svc_regs[1] 34 #define KVM_ARM_SVC_spsr svc_regs[2] 35 #define KVM_ARM_ABT_sp abt_regs[0] 36 #define KVM_ARM_ABT_lr abt_regs[1] 37 #define KVM_ARM_ABT_spsr abt_regs[2] 38 #define KVM_ARM_UND_sp und_regs[0] 39 #define KVM_ARM_UND_lr und_regs[1] 40 #define KVM_ARM_UND_spsr und_regs[2] 41 #define KVM_ARM_IRQ_sp irq_regs[0] 42 #define KVM_ARM_IRQ_lr irq_regs[1] 43 #define KVM_ARM_IRQ_spsr irq_regs[2] 44 45 /* Valid only for fiq_regs in struct kvm_regs */ 46 #define KVM_ARM_FIQ_r8 fiq_regs[0] 47 #define KVM_ARM_FIQ_r9 fiq_regs[1] 48 #define KVM_ARM_FIQ_r10 fiq_regs[2] 49 #define KVM_ARM_FIQ_fp fiq_regs[3] 50 #define KVM_ARM_FIQ_ip fiq_regs[4] 51 #define KVM_ARM_FIQ_sp fiq_regs[5] 52 #define KVM_ARM_FIQ_lr fiq_regs[6] 53 #define KVM_ARM_FIQ_spsr fiq_regs[7] 54 55 struct kvm_regs { 56 struct pt_regs usr_regs; /* R0_usr - R14_usr, PC, CPSR */ 57 unsigned long svc_regs[3]; /* SP_svc, LR_svc, SPSR_svc */ 58 unsigned long abt_regs[3]; /* SP_abt, LR_abt, SPSR_abt */ 59 unsigned long und_regs[3]; /* SP_und, LR_und, SPSR_und */ 60 unsigned long irq_regs[3]; /* SP_irq, LR_irq, SPSR_irq */ 61 unsigned long fiq_regs[8]; /* R8_fiq - R14_fiq, SPSR_fiq */ 62 }; 63 64 /* Supported Processor Types */ 65 #define KVM_ARM_TARGET_CORTEX_A15 0 66 #define KVM_ARM_NUM_TARGETS 1 67 68 /* KVM_ARM_SET_DEVICE_ADDR ioctl id encoding */ 69 #define KVM_ARM_DEVICE_TYPE_SHIFT 0 70 #define KVM_ARM_DEVICE_TYPE_MASK (0xffff << KVM_ARM_DEVICE_TYPE_SHIFT) 71 #define KVM_ARM_DEVICE_ID_SHIFT 16 72 #define KVM_ARM_DEVICE_ID_MASK (0xffff << KVM_ARM_DEVICE_ID_SHIFT) 73 74 /* Supported device IDs */ 75 #define KVM_ARM_DEVICE_VGIC_V2 0 76 77 /* Supported VGIC address types */ 78 #define KVM_VGIC_V2_ADDR_TYPE_DIST 0 79 #define KVM_VGIC_V2_ADDR_TYPE_CPU 1 80 81 #define KVM_VGIC_V2_DIST_SIZE 0x1000 82 #define KVM_VGIC_V2_CPU_SIZE 0x2000 83 84 #define KVM_ARM_VCPU_POWER_OFF 0 /* CPU is started in OFF state */ 85 86 struct kvm_vcpu_init { 87 __u32 target; 88 __u32 features[7]; 89 }; 90 91 struct kvm_sregs { 92 }; 93 94 struct kvm_fpu { 95 }; 96 97 struct kvm_guest_debug_arch { 98 }; 99 100 struct kvm_debug_exit_arch { 101 }; 102 103 struct kvm_sync_regs { 104 }; 105 106 struct kvm_arch_memory_slot { 107 }; 108 109 /* If you need to interpret the index values, here is the key: */ 110 #define KVM_REG_ARM_COPROC_MASK 0x000000000FFF0000 111 #define KVM_REG_ARM_COPROC_SHIFT 16 112 #define KVM_REG_ARM_32_OPC2_MASK 0x0000000000000007 113 #define KVM_REG_ARM_32_OPC2_SHIFT 0 114 #define KVM_REG_ARM_OPC1_MASK 0x0000000000000078 115 #define KVM_REG_ARM_OPC1_SHIFT 3 116 #define KVM_REG_ARM_CRM_MASK 0x0000000000000780 117 #define KVM_REG_ARM_CRM_SHIFT 7 118 #define KVM_REG_ARM_32_CRN_MASK 0x0000000000007800 119 #define KVM_REG_ARM_32_CRN_SHIFT 11 120 121 /* Normal registers are mapped as coprocessor 16. */ 122 #define KVM_REG_ARM_CORE (0x0010 << KVM_REG_ARM_COPROC_SHIFT) 123 #define KVM_REG_ARM_CORE_REG(name) (offsetof(struct kvm_regs, name) / 4) 124 125 /* Some registers need more space to represent values. */ 126 #define KVM_REG_ARM_DEMUX (0x0011 << KVM_REG_ARM_COPROC_SHIFT) 127 #define KVM_REG_ARM_DEMUX_ID_MASK 0x000000000000FF00 128 #define KVM_REG_ARM_DEMUX_ID_SHIFT 8 129 #define KVM_REG_ARM_DEMUX_ID_CCSIDR (0x00 << KVM_REG_ARM_DEMUX_ID_SHIFT) 130 #define KVM_REG_ARM_DEMUX_VAL_MASK 0x00000000000000FF 131 #define KVM_REG_ARM_DEMUX_VAL_SHIFT 0 132 133 /* VFP registers: we could overload CP10 like ARM does, but that's ugly. */ 134 #define KVM_REG_ARM_VFP (0x0012 << KVM_REG_ARM_COPROC_SHIFT) 135 #define KVM_REG_ARM_VFP_MASK 0x000000000000FFFF 136 #define KVM_REG_ARM_VFP_BASE_REG 0x0 137 #define KVM_REG_ARM_VFP_FPSID 0x1000 138 #define KVM_REG_ARM_VFP_FPSCR 0x1001 139 #define KVM_REG_ARM_VFP_MVFR1 0x1006 140 #define KVM_REG_ARM_VFP_MVFR0 0x1007 141 #define KVM_REG_ARM_VFP_FPEXC 0x1008 142 #define KVM_REG_ARM_VFP_FPINST 0x1009 143 #define KVM_REG_ARM_VFP_FPINST2 0x100A 144 145 146 /* KVM_IRQ_LINE irq field index values */ 147 #define KVM_ARM_IRQ_TYPE_SHIFT 24 148 #define KVM_ARM_IRQ_TYPE_MASK 0xff 149 #define KVM_ARM_IRQ_VCPU_SHIFT 16 150 #define KVM_ARM_IRQ_VCPU_MASK 0xff 151 #define KVM_ARM_IRQ_NUM_SHIFT 0 152 #define KVM_ARM_IRQ_NUM_MASK 0xffff 153 154 /* irq_type field */ 155 #define KVM_ARM_IRQ_TYPE_CPU 0 156 #define KVM_ARM_IRQ_TYPE_SPI 1 157 #define KVM_ARM_IRQ_TYPE_PPI 2 158 159 /* out-of-kernel GIC cpu interrupt injection irq_number field */ 160 #define KVM_ARM_IRQ_CPU_IRQ 0 161 #define KVM_ARM_IRQ_CPU_FIQ 1 162 163 /* Highest supported SPI, from VGIC_NR_IRQS */ 164 #define KVM_ARM_IRQ_GIC_MAX 127 165 166 /* PSCI interface */ 167 #define KVM_PSCI_FN_BASE 0x95c1ba5e 168 #define KVM_PSCI_FN(n) (KVM_PSCI_FN_BASE + (n)) 169 170 #define KVM_PSCI_FN_CPU_SUSPEND KVM_PSCI_FN(0) 171 #define KVM_PSCI_FN_CPU_OFF KVM_PSCI_FN(1) 172 #define KVM_PSCI_FN_CPU_ON KVM_PSCI_FN(2) 173 #define KVM_PSCI_FN_MIGRATE KVM_PSCI_FN(3) 174 175 #define KVM_PSCI_RET_SUCCESS 0 176 #define KVM_PSCI_RET_NI ((unsigned long)-1) 177 #define KVM_PSCI_RET_INVAL ((unsigned long)-2) 178 #define KVM_PSCI_RET_DENIED ((unsigned long)-3) 179 180 #endif /* __ARM_KVM_H__ */ 181