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 (1<<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 pvr;
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__ */
193