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 */
kvm_host_get_pmt(struct kvm * kvm)28 static inline uint64_t *kvm_host_get_pmt(struct kvm *kvm)
29 {
30 return (uint64_t *)(kvm->arch.vm_base +
31 offsetof(struct kvm_vm_data, kvm_p2m));
32 }
33
kvm_set_pmt_entry(struct kvm * kvm,gfn_t gfn,u64 paddr,u64 mem_flags)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
to_guest(struct kvm * kvm,void * addr)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
to_host(struct kvm * kvm,void * addr)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 */
kvm_get_host_context(struct kvm_vcpu * 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 */
kvm_get_guest_context(struct kvm_vcpu * 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! */
kvm_get_exit_data(struct kvm_vcpu * vcpu)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!*/
kvm_get_vcpu_ioreq(struct kvm_vcpu * vcpu)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
95