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.
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.
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.
15 * Copyright SUSE Linux Products GmbH 2009
17 * Authors: Alexander Graf <agraf@suse.de>
20 #ifndef __ASM_KVM_BOOK3S_H__
21 #define __ASM_KVM_BOOK3S_H__
23 #include <linux/types.h>
24 #include <linux/kvm_host.h>
25 #include <asm/kvm_book3s_asm.h>
38 struct kvmppc_sid_map {
45 #define SID_MAP_BITS 9
46 #define SID_MAP_NUM (1 << SID_MAP_BITS)
47 #define SID_MAP_MASK (SID_MAP_NUM - 1)
49 #ifdef CONFIG_PPC_BOOK3S_64
50 #define SID_CONTEXTS 1
52 #define SID_CONTEXTS 128
53 #define VSID_POOL_SIZE (SID_CONTEXTS * 16)
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 #ifdef CONFIG_PPC_BOOK3S_64
62 struct hlist_node list_vpte_64k;
64 struct rcu_head rcu_head;
68 struct kvmppc_pte pte;
73 * Struct for a virtual core.
74 * Note: entry_exit_map combines a bitmap of threads that have entered
75 * in the bottom 8 bits and a bitmap of threads that have exited in the
76 * next 8 bits. This is so that we can atomically set the entry bit
77 * iff the exit map is 0 without taking a lock.
89 struct kvm_vcpu *runnable_threads[MAX_SMT_THREADS];
90 struct list_head preempt_list;
92 struct swait_queue_head wq;
93 spinlock_t stoltb_lock; /* protects stolen_tb and preempt_tb */
96 struct kvm_vcpu *runner;
98 u64 tb_offset; /* guest timebase - host timebase */
99 u64 tb_offset_applied; /* timebase offset currently in force */
103 ulong dpdes; /* doorbell state (POWER8) */
104 ulong vtb; /* virtual timebase */
105 ulong conferring_threads;
106 unsigned int halt_poll_ns;
107 atomic_t online_count;
110 struct kvmppc_vcpu_book3s {
111 struct kvmppc_sid_map sid_map[SID_MAP_NUM];
117 struct kvmppc_bat ibat[8];
118 struct kvmppc_bat dbat[8];
125 #ifdef CONFIG_PPC_BOOK3S_32
126 u32 vsid_pool[VSID_POOL_SIZE];
129 u64 proto_vsid_first;
133 int context_id[SID_CONTEXTS];
135 bool hior_explicit; /* HIOR is set by ioctl, not PVR */
137 struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE];
138 struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG];
139 struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
140 struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
141 #ifdef CONFIG_PPC_BOOK3S_64
142 struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K];
144 int hpte_cache_count;
148 #define VSID_REAL 0x07ffffffffc00000ULL
149 #define VSID_BAT 0x07ffffffffb00000ULL
150 #define VSID_64K 0x0800000000000000ULL
151 #define VSID_1T 0x1000000000000000ULL
152 #define VSID_REAL_DR 0x2000000000000000ULL
153 #define VSID_REAL_IR 0x4000000000000000ULL
154 #define VSID_PR 0x8000000000000000ULL
156 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
157 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
158 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
159 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
160 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
161 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
162 extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
163 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
165 extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
166 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
167 extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
168 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
169 extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
170 struct kvm_vcpu *vcpu, unsigned long addr,
171 unsigned long status);
172 extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
173 unsigned long slb_v, unsigned long valid);
174 extern int kvmppc_hv_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu,
175 unsigned long gpa, gva_t ea, int is_store);
177 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
178 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
179 extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte);
180 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
181 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
182 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
183 extern int kvmppc_mmu_hpte_sysinit(void);
184 extern void kvmppc_mmu_hpte_sysexit(void);
185 extern int kvmppc_mmu_hv_init(void);
186 extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc);
188 extern int kvmppc_book3s_radix_page_fault(struct kvm_run *run,
189 struct kvm_vcpu *vcpu,
190 unsigned long ea, unsigned long dsisr);
191 extern unsigned long __kvmhv_copy_tofrom_guest_radix(int lpid, int pid,
192 gva_t eaddr, void *to, void *from,
194 extern long kvmhv_copy_from_guest_radix(struct kvm_vcpu *vcpu, gva_t eaddr,
195 void *to, unsigned long n);
196 extern long kvmhv_copy_to_guest_radix(struct kvm_vcpu *vcpu, gva_t eaddr,
197 void *from, unsigned long n);
198 extern int kvmppc_mmu_walk_radix_tree(struct kvm_vcpu *vcpu, gva_t eaddr,
199 struct kvmppc_pte *gpte, u64 root,
201 extern int kvmppc_mmu_radix_translate_table(struct kvm_vcpu *vcpu, gva_t eaddr,
202 struct kvmppc_pte *gpte, u64 table,
203 int table_index, u64 *pte_ret_p);
204 extern int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
205 struct kvmppc_pte *gpte, bool data, bool iswrite);
206 extern void kvmppc_radix_tlbie_page(struct kvm *kvm, unsigned long addr,
207 unsigned int pshift, unsigned int lpid);
208 extern void kvmppc_unmap_pte(struct kvm *kvm, pte_t *pte, unsigned long gpa,
210 const struct kvm_memory_slot *memslot,
212 extern bool kvmppc_hv_handle_set_rc(struct kvm *kvm, pgd_t *pgtable,
213 bool writing, unsigned long gpa,
215 extern int kvmppc_book3s_instantiate_page(struct kvm_vcpu *vcpu,
217 struct kvm_memory_slot *memslot,
218 bool writing, bool kvm_ro,
219 pte_t *inserted_pte, unsigned int *levelp);
220 extern int kvmppc_init_vm_radix(struct kvm *kvm);
221 extern void kvmppc_free_radix(struct kvm *kvm);
222 extern void kvmppc_free_pgtable_radix(struct kvm *kvm, pgd_t *pgd,
224 extern int kvmppc_radix_init(void);
225 extern void kvmppc_radix_exit(void);
226 extern int kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
228 extern int kvm_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
230 extern int kvm_test_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
232 extern long kvmppc_hv_get_dirty_log_radix(struct kvm *kvm,
233 struct kvm_memory_slot *memslot, unsigned long *map);
234 extern void kvmppc_radix_flush_memslot(struct kvm *kvm,
235 const struct kvm_memory_slot *memslot);
236 extern int kvmhv_get_rmmu_info(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
238 /* XXX remove this export when load_last_inst() is generic */
239 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
240 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
241 extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
243 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
244 extern void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac);
245 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
246 bool upper, u32 val);
247 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
248 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
249 extern kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa,
250 bool writing, bool *writable);
251 extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
252 unsigned long *rmap, long pte_index, int realmode);
253 extern void kvmppc_update_dirty_map(const struct kvm_memory_slot *memslot,
254 unsigned long gfn, unsigned long psize);
255 extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
256 unsigned long pte_index);
257 void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep,
258 unsigned long pte_index);
259 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
260 unsigned long *nb_ret);
261 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr,
262 unsigned long gpa, bool dirty);
263 extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
264 long pte_index, unsigned long pteh, unsigned long ptel,
265 pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
266 extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
267 unsigned long pte_index, unsigned long avpn,
268 unsigned long *hpret);
269 extern long kvmppc_hv_get_dirty_log_hpt(struct kvm *kvm,
270 struct kvm_memory_slot *memslot, unsigned long *map);
271 extern void kvmppc_harvest_vpa_dirty(struct kvmppc_vpa *vpa,
272 struct kvm_memory_slot *memslot,
274 extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr,
276 extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr);
278 extern int kvmhv_p9_tm_emulation_early(struct kvm_vcpu *vcpu);
279 extern int kvmhv_p9_tm_emulation(struct kvm_vcpu *vcpu);
280 extern void kvmhv_emulate_tm_rollback(struct kvm_vcpu *vcpu);
282 extern void kvmppc_entry_trampoline(void);
283 extern void kvmppc_hv_entry_trampoline(void);
284 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
285 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
286 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
287 extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm);
288 extern int kvmppc_hcall_impl_pr(unsigned long cmd);
289 extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd);
290 extern void kvmppc_copy_to_svcpu(struct kvm_vcpu *vcpu);
291 extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu);
293 #ifdef CONFIG_PPC_TRANSACTIONAL_MEM
294 void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu);
295 void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu);
296 void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu);
297 void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu);
299 static inline void kvmppc_save_tm_pr(struct kvm_vcpu *vcpu) {}
300 static inline void kvmppc_restore_tm_pr(struct kvm_vcpu *vcpu) {}
301 static inline void kvmppc_save_tm_sprs(struct kvm_vcpu *vcpu) {}
302 static inline void kvmppc_restore_tm_sprs(struct kvm_vcpu *vcpu) {}
305 long kvmhv_nested_init(void);
306 void kvmhv_nested_exit(void);
307 void kvmhv_vm_nested_init(struct kvm *kvm);
308 long kvmhv_set_partition_table(struct kvm_vcpu *vcpu);
309 long kvmhv_copy_tofrom_guest_nested(struct kvm_vcpu *vcpu);
310 void kvmhv_set_ptbl_entry(unsigned int lpid, u64 dw0, u64 dw1);
311 void kvmhv_release_all_nested(struct kvm *kvm);
312 long kvmhv_enter_nested_guest(struct kvm_vcpu *vcpu);
313 long kvmhv_do_nested_tlbie(struct kvm_vcpu *vcpu);
314 int kvmhv_run_single_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu,
315 u64 time_limit, unsigned long lpcr);
316 void kvmhv_save_hv_regs(struct kvm_vcpu *vcpu, struct hv_guest_state *hr);
317 void kvmhv_restore_hv_return_state(struct kvm_vcpu *vcpu,
318 struct hv_guest_state *hr);
319 long int kvmhv_nested_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu);
321 void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac);
323 extern int kvm_irq_bypass;
325 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
327 return vcpu->arch.book3s;
330 /* Also add subarch specific defines */
332 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
333 #include <asm/kvm_book3s_32.h>
335 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
336 #include <asm/kvm_book3s_64.h>
339 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
341 vcpu->arch.regs.gpr[num] = val;
344 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
346 return vcpu->arch.regs.gpr[num];
349 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
351 vcpu->arch.regs.ccr = val;
354 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
356 return vcpu->arch.regs.ccr;
359 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val)
361 vcpu->arch.regs.xer = val;
364 static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu)
366 return vcpu->arch.regs.xer;
369 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
371 vcpu->arch.regs.ctr = val;
374 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
376 return vcpu->arch.regs.ctr;
379 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
381 vcpu->arch.regs.link = val;
384 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
386 return vcpu->arch.regs.link;
389 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
391 vcpu->arch.regs.nip = val;
394 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
396 return vcpu->arch.regs.nip;
399 static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu);
400 static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
402 return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE);
405 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
407 return vcpu->arch.fault_dar;
410 static inline bool is_kvmppc_resume_guest(int r)
412 return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
415 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm);
416 static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu)
418 /* Only PR KVM supports the magic page */
419 return !is_kvmppc_hv_enabled(vcpu->kvm);
422 extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu);
423 extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu);
425 /* Magic register values loaded into r3 and r4 before the 'sc' assembly
426 * instruction for the OSI hypercalls */
427 #define OSI_SC_MAGIC_R3 0x113724FA
428 #define OSI_SC_MAGIC_R4 0x77810F9B
430 #define INS_DCBZ 0x7c0007ec
431 /* TO = 31 for unconditional trap */
432 #define INS_TW 0x7fe00008
434 #define SPLIT_HACK_MASK 0xff000000
435 #define SPLIT_HACK_OFFS 0xfb000000
438 * This packs a VCPU ID from the [0..KVM_MAX_VCPU_ID) space down to the
439 * [0..KVM_MAX_VCPUS) space, using knowledge of the guest's core stride
440 * (but not its actual threading mode, which is not available) to avoid
443 * The implementation leaves VCPU IDs from the range [0..KVM_MAX_VCPUS) (block
444 * 0) unchanged: if the guest is filling each VCORE completely then it will be
445 * using consecutive IDs and it will fill the space without any packing.
447 * For higher VCPU IDs, the packed ID is based on the VCPU ID modulo
448 * KVM_MAX_VCPUS (effectively masking off the top bits) and then an offset is
449 * added to avoid collisions.
451 * VCPU IDs in the range [KVM_MAX_VCPUS..(KVM_MAX_VCPUS*2)) (block 1) are only
452 * possible if the guest is leaving at least 1/2 of each VCORE empty, so IDs
453 * can be safely packed into the second half of each VCORE by adding an offset
456 * Similarly, if VCPU IDs in the range [(KVM_MAX_VCPUS*2)..(KVM_MAX_VCPUS*4))
457 * (blocks 2 and 3) are seen, the guest must be leaving at least 3/4 of each
458 * VCORE empty so packed IDs can be offset by (stride / 4) and (stride * 3 / 4).
460 * Finally, VCPU IDs from blocks 5..7 will only be seen if the guest is using a
461 * stride of 8 and 1 thread per core so the remaining offsets of 1, 5, 3 and 7
462 * must be free to use.
464 * (The offsets for each block are stored in block_offsets[], indexed by the
465 * block number if the stride is 8. For cases where the guest's stride is less
466 * than 8, we can re-use the block_offsets array by multiplying the block
467 * number by (MAX_SMT_THREADS / stride) to reach the correct entry.)
469 static inline u32 kvmppc_pack_vcpu_id(struct kvm *kvm, u32 id)
471 const int block_offsets[MAX_SMT_THREADS] = {0, 4, 2, 6, 1, 5, 3, 7};
472 int stride = kvm->arch.emul_smt_mode;
473 int block = (id / KVM_MAX_VCPUS) * (MAX_SMT_THREADS / stride);
476 if (WARN_ONCE(block >= MAX_SMT_THREADS, "VCPU ID too large to pack"))
478 packed_id = (id % KVM_MAX_VCPUS) + block_offsets[block];
479 if (WARN_ONCE(packed_id >= KVM_MAX_VCPUS, "VCPU ID packing failed"))
484 #endif /* __ASM_KVM_BOOK3S_H__ */