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 32 struct kvm_tlb { 33 struct tlbe guest_tlb[PPC44x_TLB_SIZE]; 34 struct tlbe shadow_tlb[PPC44x_TLB_SIZE]; 35 }; 36 37 enum 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 }; 43 44 extern const unsigned char exception_priority[]; 45 extern const unsigned char priority_exception[]; 46 47 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 48 extern char kvmppc_handlers_start[]; 49 extern unsigned long kvmppc_handler_len; 50 51 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); 52 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 53 unsigned int rt, unsigned int bytes, 54 int is_bigendian); 55 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 56 u32 val, unsigned int bytes, int is_bigendian); 57 58 extern int kvmppc_emulate_instruction(struct kvm_run *run, 59 struct kvm_vcpu *vcpu); 60 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); 61 62 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gfn_t gfn, 63 u64 asid, u32 flags); 64 extern void kvmppc_mmu_invalidate(struct kvm_vcpu *vcpu, gva_t eaddr, 65 gva_t eend, u32 asid); 66 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); 67 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 68 69 /* XXX Book E specific */ 70 extern void kvmppc_tlbe_set_modified(struct kvm_vcpu *vcpu, unsigned int i); 71 72 extern void kvmppc_check_and_deliver_interrupts(struct kvm_vcpu *vcpu); 73 74 static inline void kvmppc_queue_exception(struct kvm_vcpu *vcpu, int exception) 75 { 76 unsigned int priority = exception_priority[exception]; 77 set_bit(priority, &vcpu->arch.pending_exceptions); 78 } 79 80 static inline void kvmppc_clear_exception(struct kvm_vcpu *vcpu, int exception) 81 { 82 unsigned int priority = exception_priority[exception]; 83 clear_bit(priority, &vcpu->arch.pending_exceptions); 84 } 85 86 /* Helper function for "full" MSR writes. No need to call this if only EE is 87 * changing. */ 88 static inline void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr) 89 { 90 if ((new_msr & MSR_PR) != (vcpu->arch.msr & MSR_PR)) 91 kvmppc_mmu_priv_switch(vcpu, new_msr & MSR_PR); 92 93 vcpu->arch.msr = new_msr; 94 95 if (vcpu->arch.msr & MSR_WE) 96 kvm_vcpu_block(vcpu); 97 } 98 99 static inline void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 new_pid) 100 { 101 if (vcpu->arch.pid != new_pid) { 102 vcpu->arch.pid = new_pid; 103 vcpu->arch.swap_pid = 1; 104 } 105 } 106 107 #endif /* __POWERPC_KVM_PPC_H__ */ 108