1/* 2 * This program is free software; you can redistribute it and/or modify 3 * it under the terms of the GNU General Public License, version 2, as 4 * published by the Free Software Foundation. 5 * 6 * This program is distributed in the hope that it will be useful, 7 * but WITHOUT ANY WARRANTY; without even the implied warranty of 8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 9 * GNU General Public License for more details. 10 * 11 * You should have received a copy of the GNU General Public License 12 * along with this program; if not, write to the Free Software 13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 14 * 15 * Copyright IBM Corp. 2008 16 * 17 * Authors: Hollis Blanchard <hollisb@us.ibm.com> 18 */ 19 20#ifndef __POWERPC_KVM_PPC_H__ 21#define __POWERPC_KVM_PPC_H__ 22 23/* This file exists just so we can dereference kvm_vcpu, avoiding nested header 24 * dependencies. */ 25 26#include <linux/mutex.h> 27#include <linux/timer.h> 28#include <linux/types.h> 29#include <linux/kvm_types.h> 30#include <linux/kvm_host.h> 31#ifdef CONFIG_PPC_BOOK3S 32#include <asm/kvm_book3s.h> 33#else 34#include <asm/kvm_booke.h> 35#endif 36 37enum emulation_result { 38 EMULATE_DONE, /* no further processing */ 39 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ 40 EMULATE_DO_DCR, /* kvm_run filled with DCR request */ 41 EMULATE_FAIL, /* can't emulate this instruction */ 42 EMULATE_AGAIN, /* something went wrong. go again */ 43}; 44 45extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 46extern char kvmppc_handlers_start[]; 47extern unsigned long kvmppc_handler_len; 48extern void kvmppc_handler_highmem(void); 49 50extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); 51extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 52 unsigned int rt, unsigned int bytes, 53 int is_bigendian); 54extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, 55 unsigned int rt, unsigned int bytes, 56 int is_bigendian); 57extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 58 u64 val, unsigned int bytes, int is_bigendian); 59 60extern int kvmppc_emulate_instruction(struct kvm_run *run, 61 struct kvm_vcpu *vcpu); 62extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); 63extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); 64 65/* Core-specific hooks */ 66 67extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, 68 unsigned int gtlb_idx); 69extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); 70extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 71extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu); 72extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu); 73extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 74extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 75extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 76 gva_t eaddr); 77extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 78extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 79 80extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, 81 unsigned int id); 82extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 83extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 84extern int kvmppc_core_check_processor_compat(void); 85extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, 86 struct kvm_translation *tr); 87 88extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 89extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); 90 91extern void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu); 92extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); 93extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 94extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 95extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 96extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 97 struct kvm_interrupt *irq); 98extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu, 99 struct kvm_interrupt *irq); 100 101extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, 102 unsigned int op, int *advance); 103extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs); 104extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt); 105 106extern int kvmppc_booke_init(void); 107extern void kvmppc_booke_exit(void); 108 109extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 110 111/* 112 * Cuts out inst bits with ordering according to spec. 113 * That means the leftmost bit is zero. All given bits are included. 114 */ 115static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 116{ 117 u32 r; 118 u32 mask; 119 120 BUG_ON(msb > lsb); 121 122 mask = (1 << (lsb - msb + 1)) - 1; 123 r = (inst >> (63 - lsb)) & mask; 124 125 return r; 126} 127 128/* 129 * Replaces inst bits with ordering according to spec. 130 */ 131static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 132{ 133 u32 r; 134 u32 mask; 135 136 BUG_ON(msb > lsb); 137 138 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 139 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 140 141 return r; 142} 143 144#endif /* __POWERPC_KVM_PPC_H__ */ 145