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 SUSE Linux Products GmbH 2009
16 *
17 * Authors: Alexander Graf <agraf@suse.de>
18 */
19
20 #ifndef __ASM_KVM_BOOK3S_H__
21 #define __ASM_KVM_BOOK3S_H__
22
23 #include <linux/types.h>
24 #include <linux/kvm_host.h>
25 #include <asm/kvm_book3s_asm.h>
26
27 struct kvmppc_bat {
28 u64 raw;
29 u32 bepi;
30 u32 bepi_mask;
31 u32 brpn;
32 u8 wimg;
33 u8 pp;
34 bool vs : 1;
35 bool vp : 1;
36 };
37
38 struct kvmppc_sid_map {
39 u64 guest_vsid;
40 u64 guest_esid;
41 u64 host_vsid;
42 bool valid : 1;
43 };
44
45 #define SID_MAP_BITS 9
46 #define SID_MAP_NUM (1 << SID_MAP_BITS)
47 #define SID_MAP_MASK (SID_MAP_NUM - 1)
48
49 #ifdef CONFIG_PPC_BOOK3S_64
50 #define SID_CONTEXTS 1
51 #else
52 #define SID_CONTEXTS 128
53 #define VSID_POOL_SIZE (SID_CONTEXTS * 16)
54 #endif
55
56 struct hpte_cache {
57 struct hlist_node list_pte;
58 struct hlist_node list_pte_long;
59 struct hlist_node list_vpte;
60 struct hlist_node list_vpte_long;
61 struct rcu_head rcu_head;
62 u64 host_va;
63 u64 pfn;
64 ulong slot;
65 struct kvmppc_pte pte;
66 };
67
68 struct kvmppc_vcpu_book3s {
69 struct kvm_vcpu vcpu;
70 struct kvmppc_book3s_shadow_vcpu *shadow_vcpu;
71 struct kvmppc_sid_map sid_map[SID_MAP_NUM];
72 struct {
73 u64 esid;
74 u64 vsid;
75 } slb_shadow[64];
76 u8 slb_shadow_max;
77 struct kvmppc_bat ibat[8];
78 struct kvmppc_bat dbat[8];
79 u64 hid[6];
80 u64 gqr[8];
81 u64 sdr1;
82 u64 hior;
83 u64 msr_mask;
84 #ifdef CONFIG_PPC_BOOK3S_32
85 u32 vsid_pool[VSID_POOL_SIZE];
86 u32 vsid_next;
87 #else
88 u64 proto_vsid_first;
89 u64 proto_vsid_max;
90 u64 proto_vsid_next;
91 #endif
92 int context_id[SID_CONTEXTS];
93
94 bool hior_explicit; /* HIOR is set by ioctl, not PVR */
95
96 struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE];
97 struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG];
98 struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
99 struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
100 int hpte_cache_count;
101 spinlock_t mmu_lock;
102 };
103
104 #define CONTEXT_HOST 0
105 #define CONTEXT_GUEST 1
106 #define CONTEXT_GUEST_END 2
107
108 #define VSID_REAL 0x1fffffffffc00000ULL
109 #define VSID_BAT 0x1fffffffffb00000ULL
110 #define VSID_REAL_DR 0x2000000000000000ULL
111 #define VSID_REAL_IR 0x4000000000000000ULL
112 #define VSID_PR 0x8000000000000000ULL
113
114 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
115 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
116 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
117 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
118 extern void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr);
119 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
120 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
121 extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
122 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
123 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
124 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
125 extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
126 struct kvm_vcpu *vcpu, unsigned long addr,
127 unsigned long status);
128 extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
129 unsigned long slb_v, unsigned long valid);
130
131 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
132 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
133 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
134 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
135 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
136 extern int kvmppc_mmu_hpte_sysinit(void);
137 extern void kvmppc_mmu_hpte_sysexit(void);
138 extern int kvmppc_mmu_hv_init(void);
139
140 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
141 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
142 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
143 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
144 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
145 bool upper, u32 val);
146 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
147 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
148 extern pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn);
149 extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
150 unsigned long *rmap, long pte_index, int realmode);
151 extern void kvmppc_invalidate_hpte(struct kvm *kvm, unsigned long *hptep,
152 unsigned long pte_index);
153 void kvmppc_clear_ref_hpte(struct kvm *kvm, unsigned long *hptep,
154 unsigned long pte_index);
155 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
156 unsigned long *nb_ret);
157 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr);
158 extern long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
159 long pte_index, unsigned long pteh, unsigned long ptel);
160 extern long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
161 long pte_index, unsigned long pteh, unsigned long ptel);
162 extern long kvmppc_hv_get_dirty_log(struct kvm *kvm,
163 struct kvm_memory_slot *memslot);
164
165 extern void kvmppc_entry_trampoline(void);
166 extern void kvmppc_hv_entry_trampoline(void);
167 extern void kvmppc_load_up_fpu(void);
168 extern void kvmppc_load_up_altivec(void);
169 extern void kvmppc_load_up_vsx(void);
170 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
171 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
172 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
173
to_book3s(struct kvm_vcpu * vcpu)174 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
175 {
176 return container_of(vcpu, struct kvmppc_vcpu_book3s, vcpu);
177 }
178
179 extern void kvm_return_point(void);
180
181 /* Also add subarch specific defines */
182
183 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
184 #include <asm/kvm_book3s_32.h>
185 #endif
186 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
187 #include <asm/kvm_book3s_64.h>
188 #endif
189
190 #ifdef CONFIG_KVM_BOOK3S_PR
191
kvmppc_interrupt_offset(struct kvm_vcpu * vcpu)192 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
193 {
194 return to_book3s(vcpu)->hior;
195 }
196
kvmppc_update_int_pending(struct kvm_vcpu * vcpu,unsigned long pending_now,unsigned long old_pending)197 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
198 unsigned long pending_now, unsigned long old_pending)
199 {
200 if (pending_now)
201 vcpu->arch.shared->int_pending = 1;
202 else if (old_pending)
203 vcpu->arch.shared->int_pending = 0;
204 }
205
kvmppc_set_gpr(struct kvm_vcpu * vcpu,int num,ulong val)206 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
207 {
208 if ( num < 14 ) {
209 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
210 svcpu->gpr[num] = val;
211 svcpu_put(svcpu);
212 to_book3s(vcpu)->shadow_vcpu->gpr[num] = val;
213 } else
214 vcpu->arch.gpr[num] = val;
215 }
216
kvmppc_get_gpr(struct kvm_vcpu * vcpu,int num)217 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
218 {
219 if ( num < 14 ) {
220 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
221 ulong r = svcpu->gpr[num];
222 svcpu_put(svcpu);
223 return r;
224 } else
225 return vcpu->arch.gpr[num];
226 }
227
kvmppc_set_cr(struct kvm_vcpu * vcpu,u32 val)228 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
229 {
230 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
231 svcpu->cr = val;
232 svcpu_put(svcpu);
233 to_book3s(vcpu)->shadow_vcpu->cr = val;
234 }
235
kvmppc_get_cr(struct kvm_vcpu * vcpu)236 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
237 {
238 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
239 u32 r;
240 r = svcpu->cr;
241 svcpu_put(svcpu);
242 return r;
243 }
244
kvmppc_set_xer(struct kvm_vcpu * vcpu,u32 val)245 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
246 {
247 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
248 svcpu->xer = val;
249 to_book3s(vcpu)->shadow_vcpu->xer = val;
250 svcpu_put(svcpu);
251 }
252
kvmppc_get_xer(struct kvm_vcpu * vcpu)253 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
254 {
255 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
256 u32 r;
257 r = svcpu->xer;
258 svcpu_put(svcpu);
259 return r;
260 }
261
kvmppc_set_ctr(struct kvm_vcpu * vcpu,ulong val)262 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
263 {
264 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
265 svcpu->ctr = val;
266 svcpu_put(svcpu);
267 }
268
kvmppc_get_ctr(struct kvm_vcpu * vcpu)269 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
270 {
271 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
272 ulong r;
273 r = svcpu->ctr;
274 svcpu_put(svcpu);
275 return r;
276 }
277
kvmppc_set_lr(struct kvm_vcpu * vcpu,ulong val)278 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
279 {
280 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
281 svcpu->lr = val;
282 svcpu_put(svcpu);
283 }
284
kvmppc_get_lr(struct kvm_vcpu * vcpu)285 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
286 {
287 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
288 ulong r;
289 r = svcpu->lr;
290 svcpu_put(svcpu);
291 return r;
292 }
293
kvmppc_set_pc(struct kvm_vcpu * vcpu,ulong val)294 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
295 {
296 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
297 svcpu->pc = val;
298 svcpu_put(svcpu);
299 }
300
kvmppc_get_pc(struct kvm_vcpu * vcpu)301 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
302 {
303 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
304 ulong r;
305 r = svcpu->pc;
306 svcpu_put(svcpu);
307 return r;
308 }
309
kvmppc_get_last_inst(struct kvm_vcpu * vcpu)310 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu)
311 {
312 ulong pc = kvmppc_get_pc(vcpu);
313 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
314 u32 r;
315
316 /* Load the instruction manually if it failed to do so in the
317 * exit path */
318 if (svcpu->last_inst == KVM_INST_FETCH_FAILED)
319 kvmppc_ld(vcpu, &pc, sizeof(u32), &svcpu->last_inst, false);
320
321 r = svcpu->last_inst;
322 svcpu_put(svcpu);
323 return r;
324 }
325
kvmppc_get_fault_dar(struct kvm_vcpu * vcpu)326 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
327 {
328 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
329 ulong r;
330 r = svcpu->fault_dar;
331 svcpu_put(svcpu);
332 return r;
333 }
334
kvmppc_critical_section(struct kvm_vcpu * vcpu)335 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
336 {
337 ulong crit_raw = vcpu->arch.shared->critical;
338 ulong crit_r1 = kvmppc_get_gpr(vcpu, 1);
339 bool crit;
340
341 /* Truncate crit indicators in 32 bit mode */
342 if (!(vcpu->arch.shared->msr & MSR_SF)) {
343 crit_raw &= 0xffffffff;
344 crit_r1 &= 0xffffffff;
345 }
346
347 /* Critical section when crit == r1 */
348 crit = (crit_raw == crit_r1);
349 /* ... and we're in supervisor mode */
350 crit = crit && !(vcpu->arch.shared->msr & MSR_PR);
351
352 return crit;
353 }
354 #else /* CONFIG_KVM_BOOK3S_PR */
355
kvmppc_interrupt_offset(struct kvm_vcpu * vcpu)356 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
357 {
358 return 0;
359 }
360
kvmppc_update_int_pending(struct kvm_vcpu * vcpu,unsigned long pending_now,unsigned long old_pending)361 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
362 unsigned long pending_now, unsigned long old_pending)
363 {
364 }
365
kvmppc_set_gpr(struct kvm_vcpu * vcpu,int num,ulong val)366 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
367 {
368 vcpu->arch.gpr[num] = val;
369 }
370
kvmppc_get_gpr(struct kvm_vcpu * vcpu,int num)371 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
372 {
373 return vcpu->arch.gpr[num];
374 }
375
kvmppc_set_cr(struct kvm_vcpu * vcpu,u32 val)376 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
377 {
378 vcpu->arch.cr = val;
379 }
380
kvmppc_get_cr(struct kvm_vcpu * vcpu)381 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
382 {
383 return vcpu->arch.cr;
384 }
385
kvmppc_set_xer(struct kvm_vcpu * vcpu,u32 val)386 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
387 {
388 vcpu->arch.xer = val;
389 }
390
kvmppc_get_xer(struct kvm_vcpu * vcpu)391 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
392 {
393 return vcpu->arch.xer;
394 }
395
kvmppc_set_ctr(struct kvm_vcpu * vcpu,ulong val)396 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
397 {
398 vcpu->arch.ctr = val;
399 }
400
kvmppc_get_ctr(struct kvm_vcpu * vcpu)401 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
402 {
403 return vcpu->arch.ctr;
404 }
405
kvmppc_set_lr(struct kvm_vcpu * vcpu,ulong val)406 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
407 {
408 vcpu->arch.lr = val;
409 }
410
kvmppc_get_lr(struct kvm_vcpu * vcpu)411 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
412 {
413 return vcpu->arch.lr;
414 }
415
kvmppc_set_pc(struct kvm_vcpu * vcpu,ulong val)416 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
417 {
418 vcpu->arch.pc = val;
419 }
420
kvmppc_get_pc(struct kvm_vcpu * vcpu)421 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
422 {
423 return vcpu->arch.pc;
424 }
425
kvmppc_get_last_inst(struct kvm_vcpu * vcpu)426 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu)
427 {
428 ulong pc = kvmppc_get_pc(vcpu);
429
430 /* Load the instruction manually if it failed to do so in the
431 * exit path */
432 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED)
433 kvmppc_ld(vcpu, &pc, sizeof(u32), &vcpu->arch.last_inst, false);
434
435 return vcpu->arch.last_inst;
436 }
437
kvmppc_get_fault_dar(struct kvm_vcpu * vcpu)438 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
439 {
440 return vcpu->arch.fault_dar;
441 }
442
kvmppc_critical_section(struct kvm_vcpu * vcpu)443 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
444 {
445 return false;
446 }
447 #endif
448
449 /* Magic register values loaded into r3 and r4 before the 'sc' assembly
450 * instruction for the OSI hypercalls */
451 #define OSI_SC_MAGIC_R3 0x113724FA
452 #define OSI_SC_MAGIC_R4 0x77810F9B
453
454 #define INS_DCBZ 0x7c0007ec
455
456 #endif /* __ASM_KVM_BOOK3S_H__ */
457