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TOMOYO Linux Cross Reference
Linux/arch/powerpc/include/asm/kvm_book3s.h

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  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 struct kvmppc_vcpu_book3s {
 73         struct kvmppc_sid_map sid_map[SID_MAP_NUM];
 74         struct {
 75                 u64 esid;
 76                 u64 vsid;
 77         } slb_shadow[64];
 78         u8 slb_shadow_max;
 79         struct kvmppc_bat ibat[8];
 80         struct kvmppc_bat dbat[8];
 81         u64 hid[6];
 82         u64 gqr[8];
 83         u64 sdr1;
 84         u64 hior;
 85         u64 msr_mask;
 86 #ifdef CONFIG_PPC_BOOK3S_32
 87         u32 vsid_pool[VSID_POOL_SIZE];
 88         u32 vsid_next;
 89 #else
 90         u64 proto_vsid_first;
 91         u64 proto_vsid_max;
 92         u64 proto_vsid_next;
 93 #endif
 94         int context_id[SID_CONTEXTS];
 95 
 96         bool hior_explicit;             /* HIOR is set by ioctl, not PVR */
 97 
 98         struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE];
 99         struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG];
100         struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE];
101         struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG];
102 #ifdef CONFIG_PPC_BOOK3S_64
103         struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K];
104 #endif
105         int hpte_cache_count;
106         spinlock_t mmu_lock;
107 };
108 
109 #define VSID_REAL       0x07ffffffffc00000ULL
110 #define VSID_BAT        0x07ffffffffb00000ULL
111 #define VSID_64K        0x0800000000000000ULL
112 #define VSID_1T         0x1000000000000000ULL
113 #define VSID_REAL_DR    0x2000000000000000ULL
114 #define VSID_REAL_IR    0x4000000000000000ULL
115 #define VSID_PR         0x8000000000000000ULL
116 
117 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
118 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
119 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
120 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
121 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
122 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
123 extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
124 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
125                                bool iswrite);
126 extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
127 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
128 extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
129 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
130 extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
131                         struct kvm_vcpu *vcpu, unsigned long addr,
132                         unsigned long status);
133 extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
134                         unsigned long slb_v, unsigned long valid);
135 
136 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
137 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
138 extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte);
139 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
140 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
141 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
142 extern int kvmppc_mmu_hpte_sysinit(void);
143 extern void kvmppc_mmu_hpte_sysexit(void);
144 extern int kvmppc_mmu_hv_init(void);
145 extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc);
146 
147 /* XXX remove this export when load_last_inst() is generic */
148 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
149 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
150 extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
151                                           unsigned int vec);
152 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
153 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
154                            bool upper, u32 val);
155 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
156 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
157 extern kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa,
158                         bool writing, bool *writable);
159 extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
160                         unsigned long *rmap, long pte_index, int realmode);
161 extern void kvmppc_update_rmap_change(unsigned long *rmap, unsigned long psize);
162 extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
163                         unsigned long pte_index);
164 void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep,
165                         unsigned long pte_index);
166 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
167                         unsigned long *nb_ret);
168 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr,
169                         unsigned long gpa, bool dirty);
170 extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
171                         long pte_index, unsigned long pteh, unsigned long ptel,
172                         pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
173 extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
174                         unsigned long pte_index, unsigned long avpn,
175                         unsigned long *hpret);
176 extern long kvmppc_hv_get_dirty_log(struct kvm *kvm,
177                         struct kvm_memory_slot *memslot, unsigned long *map);
178 extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr,
179                         unsigned long mask);
180 extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr);
181 
182 extern void kvmppc_entry_trampoline(void);
183 extern void kvmppc_hv_entry_trampoline(void);
184 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
185 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
186 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
187 extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm);
188 extern int kvmppc_hcall_impl_pr(unsigned long cmd);
189 extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd);
190 extern void kvmppc_copy_to_svcpu(struct kvmppc_book3s_shadow_vcpu *svcpu,
191                                  struct kvm_vcpu *vcpu);
192 extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu,
193                                    struct kvmppc_book3s_shadow_vcpu *svcpu);
194 
195 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
196 {
197         return vcpu->arch.book3s;
198 }
199 
200 /* Also add subarch specific defines */
201 
202 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
203 #include <asm/kvm_book3s_32.h>
204 #endif
205 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
206 #include <asm/kvm_book3s_64.h>
207 #endif
208 
209 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
210 {
211         vcpu->arch.gpr[num] = val;
212 }
213 
214 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
215 {
216         return vcpu->arch.gpr[num];
217 }
218 
219 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
220 {
221         vcpu->arch.cr = val;
222 }
223 
224 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
225 {
226         return vcpu->arch.cr;
227 }
228 
229 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val)
230 {
231         vcpu->arch.xer = val;
232 }
233 
234 static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu)
235 {
236         return vcpu->arch.xer;
237 }
238 
239 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
240 {
241         vcpu->arch.ctr = val;
242 }
243 
244 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
245 {
246         return vcpu->arch.ctr;
247 }
248 
249 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
250 {
251         vcpu->arch.lr = val;
252 }
253 
254 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
255 {
256         return vcpu->arch.lr;
257 }
258 
259 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
260 {
261         vcpu->arch.pc = val;
262 }
263 
264 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
265 {
266         return vcpu->arch.pc;
267 }
268 
269 static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu);
270 static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
271 {
272         return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE);
273 }
274 
275 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
276 {
277         return vcpu->arch.fault_dar;
278 }
279 
280 static inline bool is_kvmppc_resume_guest(int r)
281 {
282         return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
283 }
284 
285 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm);
286 static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu)
287 {
288         /* Only PR KVM supports the magic page */
289         return !is_kvmppc_hv_enabled(vcpu->kvm);
290 }
291 
292 extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu);
293 extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu);
294 
295 /* Magic register values loaded into r3 and r4 before the 'sc' assembly
296  * instruction for the OSI hypercalls */
297 #define OSI_SC_MAGIC_R3                 0x113724FA
298 #define OSI_SC_MAGIC_R4                 0x77810F9B
299 
300 #define INS_DCBZ                        0x7c0007ec
301 /* TO = 31 for unconditional trap */
302 #define INS_TW                          0x7fe00008
303 
304 /* LPIDs we support with this build -- runtime limit may be lower */
305 #define KVMPPC_NR_LPIDS                 (LPID_RSVD + 1)
306 
307 #define SPLIT_HACK_MASK                 0xff000000
308 #define SPLIT_HACK_OFFS                 0xfb000000
309 
310 #endif /* __ASM_KVM_BOOK3S_H__ */
311 

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