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 #ifdef CONFIG_PPC_BOOK3S_64
62 struct hlist_node list_vpte_64k;
63 #endif
64 struct rcu_head rcu_head;
65 u64 host_vpn;
66 u64 pfn;
67 ulong slot;
68 struct kvmppc_pte pte;
69 int pagesize;
70 };
71
72 /*
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.
78 */
79 struct kvmppc_vcore {
80 int n_runnable;
81 int num_threads;
82 int entry_exit_map;
83 int napping_threads;
84 int first_vcpuid;
85 u16 pcpu;
86 u16 last_cpu;
87 u8 vcore_state;
88 u8 in_guest;
89 struct kvm_vcpu *runnable_threads[MAX_SMT_THREADS];
90 struct list_head preempt_list;
91 spinlock_t lock;
92 struct swait_queue_head wq;
93 spinlock_t stoltb_lock; /* protects stolen_tb and preempt_tb */
94 u64 stolen_tb;
95 u64 preempt_tb;
96 struct kvm_vcpu *runner;
97 struct kvm *kvm;
98 u64 tb_offset; /* guest timebase - host timebase */
99 ulong lpcr;
100 u32 arch_compat;
101 ulong pcr;
102 ulong dpdes; /* doorbell state (POWER8) */
103 ulong vtb; /* virtual timebase */
104 ulong conferring_threads;
105 unsigned int halt_poll_ns;
106 };
107
108 struct kvmppc_vcpu_book3s {
109 struct kvmppc_sid_map sid_map[SID_MAP_NUM];
110 struct {
111 u64 esid;
112 u64 vsid;
113 } slb_shadow[64];
114 u8 slb_shadow_max;
115 struct kvmppc_bat ibat[8];
116 struct kvmppc_bat dbat[8];
117 u64 hid[6];
118 u64 gqr[8];
119 u64 sdr1;
120 u64 hior;
121 u64 msr_mask;
122 u64 vtb;
123 #ifdef CONFIG_PPC_BOOK3S_32
124 u32 vsid_pool[VSID_POOL_SIZE];
125 u32 vsid_next;
126 #else
127 u64 proto_vsid_first;
128 u64 proto_vsid_max;
129 u64 proto_vsid_next;
130 #endif
131 int context_id[SID_CONTEXTS];
132
133 bool hior_explicit; /* HIOR is set by ioctl, not PVR */
134
135 struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE];
136 struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG];
137 struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
138 struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
139 #ifdef CONFIG_PPC_BOOK3S_64
140 struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K];
141 #endif
142 int hpte_cache_count;
143 spinlock_t mmu_lock;
144 };
145
146 #define VSID_REAL 0x07ffffffffc00000ULL
147 #define VSID_BAT 0x07ffffffffb00000ULL
148 #define VSID_64K 0x0800000000000000ULL
149 #define VSID_1T 0x1000000000000000ULL
150 #define VSID_REAL_DR 0x2000000000000000ULL
151 #define VSID_REAL_IR 0x4000000000000000ULL
152 #define VSID_PR 0x8000000000000000ULL
153
154 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
155 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
156 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
157 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
158 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
159 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
160 extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
161 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
162 bool iswrite);
163 extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
164 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
165 extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
166 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
167 extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
168 struct kvm_vcpu *vcpu, unsigned long addr,
169 unsigned long status);
170 extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
171 unsigned long slb_v, unsigned long valid);
172 extern int kvmppc_hv_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu,
173 unsigned long gpa, gva_t ea, int is_store);
174
175 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
176 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
177 extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte);
178 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
179 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
180 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
181 extern int kvmppc_mmu_hpte_sysinit(void);
182 extern void kvmppc_mmu_hpte_sysexit(void);
183 extern int kvmppc_mmu_hv_init(void);
184 extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc);
185
186 extern int kvmppc_book3s_radix_page_fault(struct kvm_run *run,
187 struct kvm_vcpu *vcpu,
188 unsigned long ea, unsigned long dsisr);
189 extern int kvmppc_mmu_radix_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
190 struct kvmppc_pte *gpte, bool data, bool iswrite);
191 extern int kvmppc_init_vm_radix(struct kvm *kvm);
192 extern void kvmppc_free_radix(struct kvm *kvm);
193 extern int kvmppc_radix_init(void);
194 extern void kvmppc_radix_exit(void);
195 extern int kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
196 unsigned long gfn);
197 extern int kvm_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
198 unsigned long gfn);
199 extern int kvm_test_age_radix(struct kvm *kvm, struct kvm_memory_slot *memslot,
200 unsigned long gfn);
201 extern long kvmppc_hv_get_dirty_log_radix(struct kvm *kvm,
202 struct kvm_memory_slot *memslot, unsigned long *map);
203 extern int kvmhv_get_rmmu_info(struct kvm *kvm, struct kvm_ppc_rmmu_info *info);
204
205 /* XXX remove this export when load_last_inst() is generic */
206 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
207 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
208 extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
209 unsigned int vec);
210 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
211 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
212 bool upper, u32 val);
213 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
214 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
215 extern kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa,
216 bool writing, bool *writable);
217 extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
218 unsigned long *rmap, long pte_index, int realmode);
219 extern void kvmppc_update_rmap_change(unsigned long *rmap, unsigned long psize);
220 extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
221 unsigned long pte_index);
222 void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep,
223 unsigned long pte_index);
224 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
225 unsigned long *nb_ret);
226 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr,
227 unsigned long gpa, bool dirty);
228 extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
229 long pte_index, unsigned long pteh, unsigned long ptel,
230 pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
231 extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
232 unsigned long pte_index, unsigned long avpn,
233 unsigned long *hpret);
234 extern long kvmppc_hv_get_dirty_log_hpt(struct kvm *kvm,
235 struct kvm_memory_slot *memslot, unsigned long *map);
236 extern void kvmppc_harvest_vpa_dirty(struct kvmppc_vpa *vpa,
237 struct kvm_memory_slot *memslot,
238 unsigned long *map);
239 extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr,
240 unsigned long mask);
241 extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr);
242
243 extern void kvmppc_entry_trampoline(void);
244 extern void kvmppc_hv_entry_trampoline(void);
245 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
246 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
247 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
248 extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm);
249 extern int kvmppc_hcall_impl_pr(unsigned long cmd);
250 extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd);
251 extern void kvmppc_copy_to_svcpu(struct kvmppc_book3s_shadow_vcpu *svcpu,
252 struct kvm_vcpu *vcpu);
253 extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu,
254 struct kvmppc_book3s_shadow_vcpu *svcpu);
255 extern int kvm_irq_bypass;
256
to_book3s(struct kvm_vcpu * vcpu)257 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
258 {
259 return vcpu->arch.book3s;
260 }
261
262 /* Also add subarch specific defines */
263
264 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
265 #include <asm/kvm_book3s_32.h>
266 #endif
267 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
268 #include <asm/kvm_book3s_64.h>
269 #endif
270
kvmppc_set_gpr(struct kvm_vcpu * vcpu,int num,ulong val)271 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
272 {
273 vcpu->arch.gpr[num] = val;
274 }
275
kvmppc_get_gpr(struct kvm_vcpu * vcpu,int num)276 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
277 {
278 return vcpu->arch.gpr[num];
279 }
280
kvmppc_set_cr(struct kvm_vcpu * vcpu,u32 val)281 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
282 {
283 vcpu->arch.cr = val;
284 }
285
kvmppc_get_cr(struct kvm_vcpu * vcpu)286 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
287 {
288 return vcpu->arch.cr;
289 }
290
kvmppc_set_xer(struct kvm_vcpu * vcpu,ulong val)291 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val)
292 {
293 vcpu->arch.xer = val;
294 }
295
kvmppc_get_xer(struct kvm_vcpu * vcpu)296 static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu)
297 {
298 return vcpu->arch.xer;
299 }
300
kvmppc_set_ctr(struct kvm_vcpu * vcpu,ulong val)301 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
302 {
303 vcpu->arch.ctr = val;
304 }
305
kvmppc_get_ctr(struct kvm_vcpu * vcpu)306 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
307 {
308 return vcpu->arch.ctr;
309 }
310
kvmppc_set_lr(struct kvm_vcpu * vcpu,ulong val)311 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
312 {
313 vcpu->arch.lr = val;
314 }
315
kvmppc_get_lr(struct kvm_vcpu * vcpu)316 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
317 {
318 return vcpu->arch.lr;
319 }
320
kvmppc_set_pc(struct kvm_vcpu * vcpu,ulong val)321 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
322 {
323 vcpu->arch.pc = val;
324 }
325
kvmppc_get_pc(struct kvm_vcpu * vcpu)326 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
327 {
328 return vcpu->arch.pc;
329 }
330
331 static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu);
kvmppc_need_byteswap(struct kvm_vcpu * vcpu)332 static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
333 {
334 return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE);
335 }
336
kvmppc_get_fault_dar(struct kvm_vcpu * vcpu)337 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
338 {
339 return vcpu->arch.fault_dar;
340 }
341
is_kvmppc_resume_guest(int r)342 static inline bool is_kvmppc_resume_guest(int r)
343 {
344 return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
345 }
346
347 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm);
kvmppc_supports_magic_page(struct kvm_vcpu * vcpu)348 static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu)
349 {
350 /* Only PR KVM supports the magic page */
351 return !is_kvmppc_hv_enabled(vcpu->kvm);
352 }
353
354 extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu);
355 extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu);
356
357 /* Magic register values loaded into r3 and r4 before the 'sc' assembly
358 * instruction for the OSI hypercalls */
359 #define OSI_SC_MAGIC_R3 0x113724FA
360 #define OSI_SC_MAGIC_R4 0x77810F9B
361
362 #define INS_DCBZ 0x7c0007ec
363 /* TO = 31 for unconditional trap */
364 #define INS_TW 0x7fe00008
365
366 /* LPIDs we support with this build -- runtime limit may be lower */
367 #define KVMPPC_NR_LPIDS (LPID_RSVD + 1)
368
369 #define SPLIT_HACK_MASK 0xff000000
370 #define SPLIT_HACK_OFFS 0xfb000000
371
372 #endif /* __ASM_KVM_BOOK3S_H__ */
373