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 CONTEXT_HOST 0
110 #define CONTEXT_GUEST 1
111 #define CONTEXT_GUEST_END 2
112
113 #define VSID_REAL 0x07ffffffffc00000ULL
114 #define VSID_BAT 0x07ffffffffb00000ULL
115 #define VSID_64K 0x0800000000000000ULL
116 #define VSID_1T 0x1000000000000000ULL
117 #define VSID_REAL_DR 0x2000000000000000ULL
118 #define VSID_REAL_IR 0x4000000000000000ULL
119 #define VSID_PR 0x8000000000000000ULL
120
121 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask);
122 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask);
123 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end);
124 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr);
125 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu);
126 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu);
127 extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu);
128 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
129 bool iswrite);
130 extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte);
131 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr);
132 extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size);
133 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu);
134 extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run,
135 struct kvm_vcpu *vcpu, unsigned long addr,
136 unsigned long status);
137 extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr,
138 unsigned long slb_v, unsigned long valid);
139
140 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
141 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu);
142 extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte);
143 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu);
144 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu);
145 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte);
146 extern int kvmppc_mmu_hpte_sysinit(void);
147 extern void kvmppc_mmu_hpte_sysexit(void);
148 extern int kvmppc_mmu_hv_init(void);
149 extern int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hc);
150
151 /* XXX remove this export when load_last_inst() is generic */
152 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data);
153 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec);
154 extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
155 unsigned int vec);
156 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
157 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
158 bool upper, u32 val);
159 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);
160 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu);
161 extern pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
162 bool *writable);
163 extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev,
164 unsigned long *rmap, long pte_index, int realmode);
165 extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep,
166 unsigned long pte_index);
167 void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep,
168 unsigned long pte_index);
169 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr,
170 unsigned long *nb_ret);
171 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr,
172 unsigned long gpa, bool dirty);
173 extern long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
174 long pte_index, unsigned long pteh, unsigned long ptel);
175 extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
176 long pte_index, unsigned long pteh, unsigned long ptel,
177 pgd_t *pgdir, bool realmode, unsigned long *idx_ret);
178 extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
179 unsigned long pte_index, unsigned long avpn,
180 unsigned long *hpret);
181 extern long kvmppc_hv_get_dirty_log(struct kvm *kvm,
182 struct kvm_memory_slot *memslot, unsigned long *map);
183 extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr,
184 unsigned long mask);
185 extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr);
186
187 extern void kvmppc_entry_trampoline(void);
188 extern void kvmppc_hv_entry_trampoline(void);
189 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst);
190 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst);
191 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd);
192 extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm);
193 extern int kvmppc_hcall_impl_pr(unsigned long cmd);
194 extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd);
195 extern void kvmppc_copy_to_svcpu(struct kvmppc_book3s_shadow_vcpu *svcpu,
196 struct kvm_vcpu *vcpu);
197 extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu,
198 struct kvmppc_book3s_shadow_vcpu *svcpu);
199
to_book3s(struct kvm_vcpu * vcpu)200 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu)
201 {
202 return vcpu->arch.book3s;
203 }
204
205 /* Also add subarch specific defines */
206
207 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
208 #include <asm/kvm_book3s_32.h>
209 #endif
210 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER
211 #include <asm/kvm_book3s_64.h>
212 #endif
213
kvmppc_set_gpr(struct kvm_vcpu * vcpu,int num,ulong val)214 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val)
215 {
216 vcpu->arch.gpr[num] = val;
217 }
218
kvmppc_get_gpr(struct kvm_vcpu * vcpu,int num)219 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num)
220 {
221 return vcpu->arch.gpr[num];
222 }
223
kvmppc_set_cr(struct kvm_vcpu * vcpu,u32 val)224 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val)
225 {
226 vcpu->arch.cr = val;
227 }
228
kvmppc_get_cr(struct kvm_vcpu * vcpu)229 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu)
230 {
231 return vcpu->arch.cr;
232 }
233
kvmppc_set_xer(struct kvm_vcpu * vcpu,u32 val)234 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val)
235 {
236 vcpu->arch.xer = val;
237 }
238
kvmppc_get_xer(struct kvm_vcpu * vcpu)239 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu)
240 {
241 return vcpu->arch.xer;
242 }
243
kvmppc_set_ctr(struct kvm_vcpu * vcpu,ulong val)244 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val)
245 {
246 vcpu->arch.ctr = val;
247 }
248
kvmppc_get_ctr(struct kvm_vcpu * vcpu)249 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu)
250 {
251 return vcpu->arch.ctr;
252 }
253
kvmppc_set_lr(struct kvm_vcpu * vcpu,ulong val)254 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val)
255 {
256 vcpu->arch.lr = val;
257 }
258
kvmppc_get_lr(struct kvm_vcpu * vcpu)259 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu)
260 {
261 return vcpu->arch.lr;
262 }
263
kvmppc_set_pc(struct kvm_vcpu * vcpu,ulong val)264 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val)
265 {
266 vcpu->arch.pc = val;
267 }
268
kvmppc_get_pc(struct kvm_vcpu * vcpu)269 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu)
270 {
271 return vcpu->arch.pc;
272 }
273
274 static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu);
kvmppc_need_byteswap(struct kvm_vcpu * vcpu)275 static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu)
276 {
277 return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE);
278 }
279
kvmppc_get_fault_dar(struct kvm_vcpu * vcpu)280 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu)
281 {
282 return vcpu->arch.fault_dar;
283 }
284
is_kvmppc_resume_guest(int r)285 static inline bool is_kvmppc_resume_guest(int r)
286 {
287 return (r == RESUME_GUEST || r == RESUME_GUEST_NV);
288 }
289
290 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm);
kvmppc_supports_magic_page(struct kvm_vcpu * vcpu)291 static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu)
292 {
293 /* Only PR KVM supports the magic page */
294 return !is_kvmppc_hv_enabled(vcpu->kvm);
295 }
296
297 /* Magic register values loaded into r3 and r4 before the 'sc' assembly
298 * instruction for the OSI hypercalls */
299 #define OSI_SC_MAGIC_R3 0x113724FA
300 #define OSI_SC_MAGIC_R4 0x77810F9B
301
302 #define INS_DCBZ 0x7c0007ec
303 /* TO = 31 for unconditional trap */
304 #define INS_TW 0x7fe00008
305
306 /* LPIDs we support with this build -- runtime limit may be lower */
307 #define KVMPPC_NR_LPIDS (LPID_RSVD + 1)
308
309 #define SPLIT_HACK_MASK 0xff000000
310 #define SPLIT_HACK_OFFS 0xfb000000
311
312 #endif /* __ASM_KVM_BOOK3S_H__ */
313