| Xiantao Zhang | a4f5003 | 2008-04-01 16:00:24 +0800 | [diff] [blame] | 1 | #ifndef __KVM_IA64_MISC_H |
| 2 | #define __KVM_IA64_MISC_H |
| 3 | |
| 4 | #include <linux/kvm_host.h> |
| 5 | /* |
| 6 | * misc.h |
| 7 | * Copyright (C) 2007, Intel Corporation. |
| 8 | * Xiantao Zhang (xiantao.zhang@intel.com) |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms and conditions of the GNU General Public License, |
| 12 | * version 2, as published by the Free Software Foundation. |
| 13 | * |
| 14 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 15 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 17 | * more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along with |
| 20 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
| 21 | * Place - Suite 330, Boston, MA 02111-1307 USA. |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | /* |
| 26 | *Return p2m base address at host side! |
| 27 | */ |
| 28 | static inline uint64_t *kvm_host_get_pmt(struct kvm *kvm) |
| 29 | { |
| Xiantao Zhang | a917f7a | 2008-10-23 14:56:44 +0800 | [diff] [blame] | 30 | return (uint64_t *)(kvm->arch.vm_base + |
| 31 | offsetof(struct kvm_vm_data, kvm_p2m)); |
| Xiantao Zhang | a4f5003 | 2008-04-01 16:00:24 +0800 | [diff] [blame] | 32 | } |
| 33 | |
| 34 | static inline void kvm_set_pmt_entry(struct kvm *kvm, gfn_t gfn, |
| 35 | u64 paddr, u64 mem_flags) |
| 36 | { |
| 37 | uint64_t *pmt_base = kvm_host_get_pmt(kvm); |
| 38 | unsigned long pte; |
| 39 | |
| 40 | pte = PAGE_ALIGN(paddr) | mem_flags; |
| 41 | pmt_base[gfn] = pte; |
| 42 | } |
| 43 | |
| 44 | /*Function for translating host address to guest address*/ |
| 45 | |
| 46 | static inline void *to_guest(struct kvm *kvm, void *addr) |
| 47 | { |
| 48 | return (void *)((unsigned long)(addr) - kvm->arch.vm_base + |
| 49 | KVM_VM_DATA_BASE); |
| 50 | } |
| 51 | |
| 52 | /*Function for translating guest address to host address*/ |
| 53 | |
| 54 | static inline void *to_host(struct kvm *kvm, void *addr) |
| 55 | { |
| 56 | return (void *)((unsigned long)addr - KVM_VM_DATA_BASE |
| 57 | + kvm->arch.vm_base); |
| 58 | } |
| 59 | |
| 60 | /* Get host context of the vcpu */ |
| 61 | static inline union context *kvm_get_host_context(struct kvm_vcpu *vcpu) |
| 62 | { |
| 63 | union context *ctx = &vcpu->arch.host; |
| 64 | return to_guest(vcpu->kvm, ctx); |
| 65 | } |
| 66 | |
| 67 | /* Get guest context of the vcpu */ |
| 68 | static inline union context *kvm_get_guest_context(struct kvm_vcpu *vcpu) |
| 69 | { |
| 70 | union context *ctx = &vcpu->arch.guest; |
| 71 | return to_guest(vcpu->kvm, ctx); |
| 72 | } |
| 73 | |
| 74 | /* kvm get exit data from gvmm! */ |
| 75 | static inline struct exit_ctl_data *kvm_get_exit_data(struct kvm_vcpu *vcpu) |
| 76 | { |
| 77 | return &vcpu->arch.exit_data; |
| 78 | } |
| 79 | |
| 80 | /*kvm get vcpu ioreq for kvm module!*/ |
| 81 | static inline struct kvm_mmio_req *kvm_get_vcpu_ioreq(struct kvm_vcpu *vcpu) |
| 82 | { |
| 83 | struct exit_ctl_data *p_ctl_data; |
| 84 | |
| 85 | if (vcpu) { |
| 86 | p_ctl_data = kvm_get_exit_data(vcpu); |
| 87 | if (p_ctl_data->exit_reason == EXIT_REASON_MMIO_INSTRUCTION) |
| 88 | return &p_ctl_data->u.ioreq; |
| 89 | } |
| 90 | |
| 91 | return NULL; |
| 92 | } |
| 93 | |
| 94 | #endif |