KVM: Prepare memslot data structures for multiple hugepage sizes
[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_NR_PAGE_SIZES       1
38 #define KVM_PAGES_PER_HPAGE(x)  (1UL<<31)
39
40 struct kvm;
41 struct kvm_run;
42 struct kvm_vcpu;
43
44 struct kvm_vm_stat {
45         u32 remote_tlb_flush;
46 };
47
48 struct kvm_vcpu_stat {
49         u32 sum_exits;
50         u32 mmio_exits;
51         u32 dcr_exits;
52         u32 signal_exits;
53         u32 light_exits;
54         /* Account for special types of light exits: */
55         u32 itlb_real_miss_exits;
56         u32 itlb_virt_miss_exits;
57         u32 dtlb_real_miss_exits;
58         u32 dtlb_virt_miss_exits;
59         u32 syscall_exits;
60         u32 isi_exits;
61         u32 dsi_exits;
62         u32 emulated_inst_exits;
63         u32 dec_exits;
64         u32 ext_intr_exits;
65         u32 halt_wakeup;
66 };
67
68 enum kvm_exit_types {
69         MMIO_EXITS,
70         DCR_EXITS,
71         SIGNAL_EXITS,
72         ITLB_REAL_MISS_EXITS,
73         ITLB_VIRT_MISS_EXITS,
74         DTLB_REAL_MISS_EXITS,
75         DTLB_VIRT_MISS_EXITS,
76         SYSCALL_EXITS,
77         ISI_EXITS,
78         DSI_EXITS,
79         EMULATED_INST_EXITS,
80         EMULATED_MTMSRWE_EXITS,
81         EMULATED_WRTEE_EXITS,
82         EMULATED_MTSPR_EXITS,
83         EMULATED_MFSPR_EXITS,
84         EMULATED_MTMSR_EXITS,
85         EMULATED_MFMSR_EXITS,
86         EMULATED_TLBSX_EXITS,
87         EMULATED_TLBWE_EXITS,
88         EMULATED_RFI_EXITS,
89         DEC_EXITS,
90         EXT_INTR_EXITS,
91         HALT_WAKEUP,
92         USR_PR_INST,
93         FP_UNAVAIL,
94         DEBUG_EXITS,
95         TIMEINGUEST,
96         __NUMBER_OF_KVM_EXIT_TYPES
97 };
98
99 /* allow access to big endian 32bit upper/lower parts and 64bit var */
100 struct kvmppc_exit_timing {
101         union {
102                 u64 tv64;
103                 struct {
104                         u32 tbu, tbl;
105                 } tv32;
106         };
107 };
108
109 struct kvm_arch {
110 };
111
112 struct kvm_vcpu_arch {
113         u32 host_stack;
114         u32 host_pid;
115
116         u64 fpr[32];
117         ulong gpr[32];
118
119         ulong pc;
120         u32 cr;
121         ulong ctr;
122         ulong lr;
123         ulong xer;
124
125         ulong msr;
126         u32 mmucr;
127         ulong sprg0;
128         ulong sprg1;
129         ulong sprg2;
130         ulong sprg3;
131         ulong sprg4;
132         ulong sprg5;
133         ulong sprg6;
134         ulong sprg7;
135         ulong srr0;
136         ulong srr1;
137         ulong csrr0;
138         ulong csrr1;
139         ulong dsrr0;
140         ulong dsrr1;
141         ulong dear;
142         ulong esr;
143         u32 dec;
144         u32 decar;
145         u32 tbl;
146         u32 tbu;
147         u32 tcr;
148         u32 tsr;
149         u32 ivor[64];
150         ulong ivpr;
151         u32 pir;
152
153         u32 shadow_pid;
154         u32 pid;
155         u32 swap_pid;
156
157         u32 ccr0;
158         u32 ccr1;
159         u32 dbcr0;
160         u32 dbcr1;
161         u32 dbsr;
162
163 #ifdef CONFIG_KVM_EXIT_TIMING
164         struct kvmppc_exit_timing timing_exit;
165         struct kvmppc_exit_timing timing_last_enter;
166         u32 last_exit_type;
167         u32 timing_count_type[__NUMBER_OF_KVM_EXIT_TYPES];
168         u64 timing_sum_duration[__NUMBER_OF_KVM_EXIT_TYPES];
169         u64 timing_sum_quad_duration[__NUMBER_OF_KVM_EXIT_TYPES];
170         u64 timing_min_duration[__NUMBER_OF_KVM_EXIT_TYPES];
171         u64 timing_max_duration[__NUMBER_OF_KVM_EXIT_TYPES];
172         u64 timing_last_exit;
173         struct dentry *debugfs_exit_timing;
174 #endif
175
176         u32 last_inst;
177         ulong fault_dear;
178         ulong fault_esr;
179         gpa_t paddr_accessed;
180
181         u8 io_gpr; /* GPR used as IO source/target */
182         u8 mmio_is_bigendian;
183         u8 dcr_needed;
184         u8 dcr_is_write;
185
186         u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
187
188         struct timer_list dec_timer;
189         unsigned long pending_exceptions;
190 };
191
192 #endif /* __POWERPC_KVM_HOST_H__ */