summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/include/asm/kvm_book3s.h
blob: bb1e38a23ac76753cb24162b07a7c03a517f7126 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License, version 2, as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Copyright SUSE Linux Products GmbH 2009
 *
 * Authors: Alexander Graf <agraf@suse.de>
 */

#ifndef __ASM_KVM_BOOK3S_H__
#define __ASM_KVM_BOOK3S_H__

#include <linux/types.h>
#include <linux/kvm_host.h>
#include <asm/kvm_book3s_asm.h>

struct kvmppc_bat {
	u64 raw;
	u32 bepi;
	u32 bepi_mask;
	u32 brpn;
	u8 wimg;
	u8 pp;
	bool vs		: 1;
	bool vp		: 1;
};

struct kvmppc_sid_map {
	u64 guest_vsid;
	u64 guest_esid;
	u64 host_vsid;
	bool valid	: 1;
};

#define SID_MAP_BITS    9
#define SID_MAP_NUM     (1 << SID_MAP_BITS)
#define SID_MAP_MASK    (SID_MAP_NUM - 1)

#ifdef CONFIG_PPC_BOOK3S_64
#define SID_CONTEXTS	1
#else
#define SID_CONTEXTS	128
#define VSID_POOL_SIZE	(SID_CONTEXTS * 16)
#endif

struct hpte_cache {
	struct hlist_node list_pte;
	struct hlist_node list_pte_long;
	struct hlist_node list_vpte;
	struct hlist_node list_vpte_long;
#ifdef CONFIG_PPC_BOOK3S_64
	struct hlist_node list_vpte_64k;
#endif
	struct rcu_head rcu_head;
	u64 host_vpn;
	u64 pfn;
	ulong slot;
	struct kvmppc_pte pte;
	int pagesize;
};

struct kvmppc_vcpu_book3s {
	struct kvmppc_sid_map sid_map[SID_MAP_NUM];
	struct {
		u64 esid;
		u64 vsid;
	} slb_shadow[64];
	u8 slb_shadow_max;
	struct kvmppc_bat ibat[8];
	struct kvmppc_bat dbat[8];
	u64 hid[6];
	u64 gqr[8];
	u64 sdr1;
	u64 hior;
	u64 msr_mask;
	u64 purr_offset;
	u64 spurr_offset;
#ifdef CONFIG_PPC_BOOK3S_32
	u32 vsid_pool[VSID_POOL_SIZE];
	u32 vsid_next;
#else
	u64 proto_vsid_first;
	u64 proto_vsid_max;
	u64 proto_vsid_next;
#endif
	int context_id[SID_CONTEXTS];

	bool hior_explicit;		/* HIOR is set by ioctl, not PVR */

	struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE];
	struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG];
	struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
	struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
#ifdef CONFIG_PPC_BOOK3S_64
	struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K];
#endif
	int hpte_cache_count;
	spinlock_t mmu_lock;
};

#define CONTEXT_HOST		0
#define CONTEXT_GUEST		1
#define CONTEXT_GUEST_END	2

#define VSID_REAL	0x07ffffffffc00000ULL
#define VSID_BAT	0x07ffffffffb00000ULL
#define VSID_64K	0x0800000000000000ULL
#define VSID_1T		0x1000000000000000ULL
#define VSID_REAL_DR	0x2000000000000000ULL
#define VSID_REAL_IR	0x4000000000000000ULL
#define VSID_PR		0x8000000000000000ULL

extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
			       bool iswrite);
extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
			struct kvm_vcpu *vcpu, unsigned long addr,
			unsigned long status);
extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
			unsigned long slb_v, unsigned long valid);

extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte);
extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
extern int kvmppc_mmu_hpte_sysinit(void);
extern void kvmppc_mmu_hpte_sysexit(void);
extern int kvmppc_mmu_hv_init(void);

extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
					  unsigned int vec);
extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
			   bool upper, u32 val);
extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
extern pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn, bool writing,
			bool *writable);
extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
			unsigned long *rmap, long pte_index, int realmode);
extern void kvmppc_invalidate_hpte(struct kvm *kvm, unsigned long *hptep,
			unsigned long pte_index);
void kvmppc_clear_ref_hpte(struct kvm *kvm, unsigned long *hptep,
			unsigned long pte_index);
extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
			unsigned long *nb_ret);
extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr,
			unsigned long gpa, bool dirty);
extern long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
			long pte_index, unsigned long pteh, unsigned long ptel);
extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
			long pte_index, unsigned long pteh, unsigned long ptel,
			pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
			unsigned long pte_index, unsigned long avpn,
			unsigned long *hpret);
extern long kvmppc_hv_get_dirty_log(struct kvm *kvm,
			struct kvm_memory_slot *memslot, unsigned long *map);
extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr,
			unsigned long mask);

extern void kvmppc_entry_trampoline(void);
extern void kvmppc_hv_entry_trampoline(void);
extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
extern void kvmppc_copy_to_svcpu(struct kvmppc_book3s_shadow_vcpu *svcpu,
				 struct kvm_vcpu *vcpu);
extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu,
				   struct kvmppc_book3s_shadow_vcpu *svcpu);

static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.book3s;
}

/* Also add subarch specific defines */

#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
#include <asm/kvm_book3s_32.h>
#endif
#ifdef CONFIG_KVM_BOOK3S_64_HANDLER
#include <asm/kvm_book3s_64.h>
#endif

static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
{
	vcpu->arch.gpr[num] = val;
}

static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
{
	return vcpu->arch.gpr[num];
}

static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
{
	vcpu->arch.cr = val;
}

static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.cr;
}

static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
{
	vcpu->arch.xer = val;
}

static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.xer;
}

static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
{
	vcpu->arch.ctr = val;
}

static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.ctr;
}

static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
{
	vcpu->arch.lr = val;
}

static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.lr;
}

static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
{
	vcpu->arch.pc = val;
}

static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.pc;
}

static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
{
	return (vcpu->arch.shared->msr & MSR_LE) != (MSR_KERNEL & MSR_LE);
}

static inline u32 kvmppc_get_last_inst_internal(struct kvm_vcpu *vcpu, ulong pc)
{
	/* Load the instruction manually if it failed to do so in the
	 * exit path */
	if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
		kvmppc_ld(vcpu, &pc, sizeof(u32), &vcpu->arch.last_inst, false);

	return kvmppc_need_byteswap(vcpu) ? swab32(vcpu->arch.last_inst) :
		vcpu->arch.last_inst;
}

static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu)
{
	return kvmppc_get_last_inst_internal(vcpu, kvmppc_get_pc(vcpu));
}

/*
 * Like kvmppc_get_last_inst(), but for fetching a sc instruction.
 * Because the sc instruction sets SRR0 to point to the following
 * instruction, we have to fetch from pc - 4.
 */
static inline u32 kvmppc_get_last_sc(struct kvm_vcpu *vcpu)
{
	return kvmppc_get_last_inst_internal(vcpu, kvmppc_get_pc(vcpu) - 4);
}

static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
{
	return vcpu->arch.fault_dar;
}

static inline bool is_kvmppc_resume_guest(int r)
{
	return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
}

/* Magic register values loaded into r3 and r4 before the 'sc' assembly
 * instruction for the OSI hypercalls */
#define OSI_SC_MAGIC_R3			0x113724FA
#define OSI_SC_MAGIC_R4			0x77810F9B

#define INS_DCBZ			0x7c0007ec
/* TO = 31 for unconditional trap */
#define INS_TW				0x7fe00008

/* LPIDs we support with this build -- runtime limit may be lower */
#define KVMPPC_NR_LPIDS			(LPID_RSVD + 1)

#endif /* __ASM_KVM_BOOK3S_H__ */