d4caa6127f558c05e3261a2664d44b2e6d3fff01
[linux-2.6.git] / arch / powerpc / include / asm / kvm_host.h
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. 2007
16  *
17  * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18  */
19
20 #ifndef __POWERPC_KVM_HOST_H__
21 #define __POWERPC_KVM_HOST_H__
22
23 #include <linux/mutex.h>
24 #include <linux/timer.h>
25 #include <linux/types.h>
26 #include <linux/kvm_types.h>
27 #include <asm/kvm_asm.h>
28
29 #define KVM_MAX_VCPUS 1
30 #define KVM_MEMORY_SLOTS 32
31 /* memory slots that does not exposed to userspace */
32 #define KVM_PRIVATE_MEM_SLOTS 4
33
34 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1
35
36 /* We don't currently support large pages. */
37 #define KVM_PAGES_PER_HPAGE (1UL << 31)
38
39 struct kvm;
40 struct kvm_run;
41 struct kvm_vcpu;
42
43 struct kvm_vm_stat {
44         u32 remote_tlb_flush;
45 };
46
47 struct kvm_vcpu_stat {
48         u32 sum_exits;
49         u32 mmio_exits;
50         u32 dcr_exits;
51         u32 signal_exits;
52         u32 light_exits;
53         /* Account for special types of light exits: */
54         u32 itlb_real_miss_exits;
55         u32 itlb_virt_miss_exits;
56         u32 dtlb_real_miss_exits;
57         u32 dtlb_virt_miss_exits;
58         u32 syscall_exits;
59         u32 isi_exits;
60         u32 dsi_exits;
61         u32 emulated_inst_exits;
62         u32 dec_exits;
63         u32 ext_intr_exits;
64         u32 halt_wakeup;
65 };
66
67 enum kvm_exit_types {
68         MMIO_EXITS,
69         DCR_EXITS,
70         SIGNAL_EXITS,
71         ITLB_REAL_MISS_EXITS,
72         ITLB_VIRT_MISS_EXITS,
73         DTLB_REAL_MISS_EXITS,
74         DTLB_VIRT_MISS_EXITS,
75         SYSCALL_EXITS,
76         ISI_EXITS,
77         DSI_EXITS,
78         EMULATED_INST_EXITS,
79         EMULATED_MTMSRWE_EXITS,
80         EMULATED_WRTEE_EXITS,
81         EMULATED_MTSPR_EXITS,
82         EMULATED_MFSPR_EXITS,
83         EMULATED_MTMSR_EXITS,
84         EMULATED_MFMSR_EXITS,
85         EMULATED_TLBSX_EXITS,
86         EMULATED_TLBWE_EXITS,
87         EMULATED_RFI_EXITS,
88         DEC_EXITS,
89         EXT_INTR_EXITS,
90         HALT_WAKEUP,
91         USR_PR_INST,
92         FP_UNAVAIL,
93         DEBUG_EXITS,
94         TIMEINGUEST,
95         __NUMBER_OF_KVM_EXIT_TYPES
96 };
97
98 /* allow access to big endian 32bit upper/lower parts and 64bit var */
99 struct kvmppc_exit_timing {
100         union {
101                 u64 tv64;
102                 struct {
103                         u32 tbu, tbl;
104                 } tv32;
105         };
106 };
107
108 struct kvm_arch {
109 };
110
111 struct kvm_vcpu_arch {
112         u32 host_stack;
113         u32 host_pid;
114
115         u64 fpr[32];
116         ulong gpr[32];
117
118         ulong pc;
119         u32 cr;
120         ulong ctr;
121         ulong lr;
122         ulong xer;
123
124         ulong msr;
125         u32 mmucr;
126         ulong sprg0;
127         ulong sprg1;
128         ulong sprg2;
129         ulong sprg3;
130         ulong sprg4;
131         ulong sprg5;
132         ulong sprg6;
133         ulong sprg7;
134         ulong srr0;
135         ulong srr1;
136         ulong csrr0;
137         ulong csrr1;
138         ulong dsrr0;
139         ulong dsrr1;
140         ulong dear;
141         ulong esr;
142         u32 dec;
143         u32 decar;
144         u32 tbl;
145         u32 tbu;
146         u32 tcr;
147         u32 tsr;
148         u32 ivor[64];
149         ulong ivpr;
150         u32 pir;
151
152         u32 shadow_pid;
153         u32 pid;
154         u32 swap_pid;
155
156         u32 ccr0;
157         u32 ccr1;
158         u32 dbcr0;
159         u32 dbcr1;
160         u32 dbsr;
161
162 #ifdef CONFIG_KVM_EXIT_TIMING
163         struct kvmppc_exit_timing timing_exit;
164         struct kvmppc_exit_timing timing_last_enter;
165         u32 last_exit_type;
166         u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
167         u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
168         u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
169         u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
170         u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
171         u64 timing_last_exit;
172         struct dentry *debugfs_exit_timing;
173 #endif
174
175         u32 last_inst;
176         ulong fault_dear;
177         ulong fault_esr;
178         gpa_t paddr_accessed;
179
180         u8 io_gpr; /* GPR used as IO source/target */
181         u8 mmio_is_bigendian;
182         u8 dcr_needed;
183         u8 dcr_is_write;
184
185         u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
186
187         struct timer_list dec_timer;
188         unsigned long pending_exceptions;
189 };
190
191 #endif /* __POWERPC_KVM_HOST_H__ */