summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/include/asm/kvm_book3s.h
blob: 472437b7b85de2cb19e2da1389f084d9c2f1f4b9 (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
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
/*
 * 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;
	struct rcu_head rcu_head;
	u64 host_va;
	u64 pfn;
	ulong slot;
	struct kvmppc_pte pte;
};

struct kvmppc_vcpu_book3s {
	struct kvm_vcpu vcpu;
	struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
	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 vsid_next;
#ifdef CONFIG_PPC_BOOK3S_32
	u32 vsid_pool[VSID_POOL_SIZE];
#else
	u64 vsid_first;
	u64 vsid_max;
#endif
	int context_id[SID_CONTEXTS];

	bool hior_sregs;		/* HIOR is set by SREGS, 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];
	int hpte_cache_count;
	spinlock_t mmu_lock;
};

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

#define VSID_REAL	0x1fffffffffc00000ULL
#define VSID_BAT	0x1fffffffffb00000ULL
#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_set_pvr(struct kvm_vcpu *vcpu, u32 pvr);
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);
extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);

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_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_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);

extern void kvmppc_handler_lowmem_trampoline(void);
extern void kvmppc_handler_trampoline_enter(void);
extern void kvmppc_rmcall(ulong srr0, ulong srr1);
extern void kvmppc_hv_entry_trampoline(void);
extern void kvmppc_load_up_fpu(void);
extern void kvmppc_load_up_altivec(void);
extern void kvmppc_load_up_vsx(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);

static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
{
	return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu);
}

extern void kvm_return_point(void);

/* 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

#ifdef CONFIG_KVM_BOOK3S_PR

static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
{
	return to_book3s(vcpu)->hior;
}

static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
			unsigned long pending_now, unsigned long old_pending)
{
	if (pending_now)
		vcpu->arch.shared->int_pending = 1;
	else if (old_pending)
		vcpu->arch.shared->int_pending = 0;
}

static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
{
	if ( num < 14 ) {
		to_svcpu(vcpu)->gpr[num] = val;
		to_book3s(vcpu)->shadow_vcpu->gpr[num] = val;
	} else
		vcpu->arch.gpr[num] = val;
}

static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
{
	if ( num < 14 )
		return to_svcpu(vcpu)->gpr[num];
	else
		return vcpu->arch.gpr[num];
}

static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
{
	to_svcpu(vcpu)->cr = val;
	to_book3s(vcpu)->shadow_vcpu->cr = val;
}

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

static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
{
	to_svcpu(vcpu)->xer = val;
	to_book3s(vcpu)->shadow_vcpu->xer = val;
}

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

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

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

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

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

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

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

static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu)
{
	ulong pc = kvmppc_get_pc(vcpu);
	struct kvmppc_book3s_shadow_vcpu *svcpu = to_svcpu(vcpu);

	/* Load the instruction manually if it failed to do so in the
	 * exit path */
	if (svcpu->last_inst == KVM_INST_FETCH_FAILED)
		kvmppc_ld(vcpu, &pc, sizeof(u32), &svcpu->last_inst, false);

	return svcpu->last_inst;
}

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

static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
{
	ulong crit_raw = vcpu->arch.shared->critical;
	ulong crit_r1 = kvmppc_get_gpr(vcpu, 1);
	bool crit;

	/* Truncate crit indicators in 32 bit mode */
	if (!(vcpu->arch.shared->msr & MSR_SF)) {
		crit_raw &= 0xffffffff;
		crit_r1 &= 0xffffffff;
	}

	/* Critical section when crit == r1 */
	crit = (crit_raw == crit_r1);
	/* ... and we're in supervisor mode */
	crit = crit && !(vcpu->arch.shared->msr & MSR_PR);

	return crit;
}
#else /* CONFIG_KVM_BOOK3S_PR */

static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
{
	return 0;
}

static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
			unsigned long pending_now, unsigned long old_pending)
{
}

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 u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu)
{
	ulong pc = kvmppc_get_pc(vcpu);

	/* 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 vcpu->arch.last_inst;
}

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

static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
{
	return false;
}
#endif

static inline unsigned long compute_tlbie_rb(unsigned long v, unsigned long r,
					     unsigned long pte_index)
{
	unsigned long rb, va_low;

	rb = (v & ~0x7fUL) << 16;		/* AVA field */
	va_low = pte_index >> 3;
	if (v & HPTE_V_SECONDARY)
		va_low = ~va_low;
	/* xor vsid from AVA */
	if (!(v & HPTE_V_1TB_SEG))
		va_low ^= v >> 12;
	else
		va_low ^= v >> 24;
	va_low &= 0x7ff;
	if (v & HPTE_V_LARGE) {
		rb |= 1;			/* L field */
		if (cpu_has_feature(CPU_FTR_ARCH_206) &&
		    (r & 0xff000)) {
			/* non-16MB large page, must be 64k */
			/* (masks depend on page size) */
			rb |= 0x1000;		/* page encoding in LP field */
			rb |= (va_low & 0x7f) << 16; /* 7b of VA in AVA/LP field */
			rb |= (va_low & 0xfe);	/* AVAL field (P7 doesn't seem to care) */
		}
	} else {
		/* 4kB page */
		rb |= (va_low & 0x7ff) << 12;	/* remaining 11b of VA */
	}
	rb |= (v >> 54) & 0x300;		/* B field */
	return rb;
}

/* 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

#endif /* __ASM_KVM_BOOK3S_H__ */