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 u64 purr_offset; 87 u64 spurr_offset; 88 #ifdef CONFIG_PPC_BOOK3S_32 89 u32 vsid_pool[VSID_POOL_SIZE]; 90 u32 vsid_next; 91 #else 92 u64 proto_vsid_first; 93 u64 proto_vsid_max; 94 u64 proto_vsid_next; 95 #endif 96 int context_id[SID_CONTEXTS]; 97 98 bool hior_explicit; /* HIOR is set by ioctl, not PVR */ 99 100 struct hlist_head hpte_hash_pte[HPTEG_HASH_NUM_PTE]; 101 struct hlist_head hpte_hash_pte_long[HPTEG_HASH_NUM_PTE_LONG]; 102 struct hlist_head hpte_hash_vpte[HPTEG_HASH_NUM_VPTE]; 103 struct hlist_head hpte_hash_vpte_long[HPTEG_HASH_NUM_VPTE_LONG]; 104 #ifdef CONFIG_PPC_BOOK3S_64 105 struct hlist_head hpte_hash_vpte_64k[HPTEG_HASH_NUM_VPTE_64K]; 106 #endif 107 int hpte_cache_count; 108 spinlock_t mmu_lock; 109 }; 110 111 #define CONTEXT_HOST 0 112 #define CONTEXT_GUEST 1 113 #define CONTEXT_GUEST_END 2 114 115 #define VSID_REAL 0x07ffffffffc00000ULL 116 #define VSID_BAT 0x07ffffffffb00000ULL 117 #define VSID_64K 0x0800000000000000ULL 118 #define VSID_1T 0x1000000000000000ULL 119 #define VSID_REAL_DR 0x2000000000000000ULL 120 #define VSID_REAL_IR 0x4000000000000000ULL 121 #define VSID_PR 0x8000000000000000ULL 122 123 extern void kvmppc_mmu_pte_flush(struct kvm_vcpu *vcpu, ulong ea, ulong ea_mask); 124 extern void kvmppc_mmu_pte_vflush(struct kvm_vcpu *vcpu, u64 vp, u64 vp_mask); 125 extern void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end); 126 extern void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 new_msr); 127 extern void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu); 128 extern void kvmppc_mmu_book3s_32_init(struct kvm_vcpu *vcpu); 129 extern void kvmppc_mmu_book3s_hv_init(struct kvm_vcpu *vcpu); 130 extern int kvmppc_mmu_map_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte, 131 bool iswrite); 132 extern void kvmppc_mmu_unmap_page(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte); 133 extern int kvmppc_mmu_map_segment(struct kvm_vcpu *vcpu, ulong eaddr); 134 extern void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong eaddr, ulong seg_size); 135 extern void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu); 136 extern int kvmppc_book3s_hv_page_fault(struct kvm_run *run, 137 struct kvm_vcpu *vcpu, unsigned long addr, 138 unsigned long status); 139 extern long kvmppc_hv_find_lock_hpte(struct kvm *kvm, gva_t eaddr, 140 unsigned long slb_v, unsigned long valid); 141 142 extern void kvmppc_mmu_hpte_cache_map(struct kvm_vcpu *vcpu, struct hpte_cache *pte); 143 extern struct hpte_cache *kvmppc_mmu_hpte_cache_next(struct kvm_vcpu *vcpu); 144 extern void kvmppc_mmu_hpte_cache_free(struct hpte_cache *pte); 145 extern void kvmppc_mmu_hpte_destroy(struct kvm_vcpu *vcpu); 146 extern int kvmppc_mmu_hpte_init(struct kvm_vcpu *vcpu); 147 extern void kvmppc_mmu_invalidate_pte(struct kvm_vcpu *vcpu, struct hpte_cache *pte); 148 extern int kvmppc_mmu_hpte_sysinit(void); 149 extern void kvmppc_mmu_hpte_sysexit(void); 150 extern int kvmppc_mmu_hv_init(void); 151 152 extern int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data); 153 extern int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, bool data); 154 extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec); 155 extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu, 156 unsigned int vec); 157 extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags); 158 extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat, 159 bool upper, u32 val); 160 extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr); 161 extern int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu); 162 extern pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn, bool writing, 163 bool *writable); 164 extern void kvmppc_add_revmap_chain(struct kvm *kvm, struct revmap_entry *rev, 165 unsigned long *rmap, long pte_index, int realmode); 166 extern void kvmppc_invalidate_hpte(struct kvm *kvm, unsigned long *hptep, 167 unsigned long pte_index); 168 void kvmppc_clear_ref_hpte(struct kvm *kvm, unsigned long *hptep, 169 unsigned long pte_index); 170 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr, 171 unsigned long *nb_ret); 172 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr, 173 unsigned long gpa, bool dirty); 174 extern long kvmppc_virtmode_h_enter(struct kvm_vcpu *vcpu, unsigned long flags, 175 long pte_index, unsigned long pteh, unsigned long ptel); 176 extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, 177 long pte_index, unsigned long pteh, unsigned long ptel, 178 pgd_t *pgdir, bool realmode, unsigned long *idx_ret); 179 extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags, 180 unsigned long pte_index, unsigned long avpn, 181 unsigned long *hpret); 182 extern long kvmppc_hv_get_dirty_log(struct kvm *kvm, 183 struct kvm_memory_slot *memslot, unsigned long *map); 184 extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr, 185 unsigned long mask); 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_copy_to_svcpu(struct kvmppc_book3s_shadow_vcpu *svcpu, 193 struct kvm_vcpu *vcpu); 194 extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu, 195 struct kvmppc_book3s_shadow_vcpu *svcpu); 196 197 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu) 198 { 199 return vcpu->arch.book3s; 200 } 201 202 /* Also add subarch specific defines */ 203 204 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 205 #include <asm/kvm_book3s_32.h> 206 #endif 207 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER 208 #include <asm/kvm_book3s_64.h> 209 #endif 210 211 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) 212 { 213 vcpu->arch.gpr[num] = val; 214 } 215 216 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) 217 { 218 return vcpu->arch.gpr[num]; 219 } 220 221 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) 222 { 223 vcpu->arch.cr = val; 224 } 225 226 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) 227 { 228 return vcpu->arch.cr; 229 } 230 231 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, u32 val) 232 { 233 vcpu->arch.xer = val; 234 } 235 236 static inline u32 kvmppc_get_xer(struct kvm_vcpu *vcpu) 237 { 238 return vcpu->arch.xer; 239 } 240 241 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) 242 { 243 vcpu->arch.ctr = val; 244 } 245 246 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) 247 { 248 return vcpu->arch.ctr; 249 } 250 251 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) 252 { 253 vcpu->arch.lr = val; 254 } 255 256 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) 257 { 258 return vcpu->arch.lr; 259 } 260 261 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) 262 { 263 vcpu->arch.pc = val; 264 } 265 266 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) 267 { 268 return vcpu->arch.pc; 269 } 270 271 static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu) 272 { 273 return (vcpu->arch.shared->msr & MSR_LE) != (MSR_KERNEL & MSR_LE); 274 } 275 276 static inline u32 kvmppc_get_last_inst_internal(struct kvm_vcpu *vcpu, ulong pc) 277 { 278 /* Load the instruction manually if it failed to do so in the 279 * exit path */ 280 if (vcpu->arch.last_inst == KVM_INST_FETCH_FAILED) 281 kvmppc_ld(vcpu, &pc, sizeof(u32), &vcpu->arch.last_inst, false); 282 283 return kvmppc_need_byteswap(vcpu) ? swab32(vcpu->arch.last_inst) : 284 vcpu->arch.last_inst; 285 } 286 287 static inline u32 kvmppc_get_last_inst(struct kvm_vcpu *vcpu) 288 { 289 return kvmppc_get_last_inst_internal(vcpu, kvmppc_get_pc(vcpu)); 290 } 291 292 /* 293 * Like kvmppc_get_last_inst(), but for fetching a sc instruction. 294 * Because the sc instruction sets SRR0 to point to the following 295 * instruction, we have to fetch from pc - 4. 296 */ 297 static inline u32 kvmppc_get_last_sc(struct kvm_vcpu *vcpu) 298 { 299 return kvmppc_get_last_inst_internal(vcpu, kvmppc_get_pc(vcpu) - 4); 300 } 301 302 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) 303 { 304 return vcpu->arch.fault_dar; 305 } 306 307 static inline bool is_kvmppc_resume_guest(int r) 308 { 309 return (r == RESUME_GUEST || r == RESUME_GUEST_NV); 310 } 311 312 /* Magic register values loaded into r3 and r4 before the 'sc' assembly 313 * instruction for the OSI hypercalls */ 314 #define OSI_SC_MAGIC_R3 0x113724FA 315 #define OSI_SC_MAGIC_R4 0x77810F9B 316 317 #define INS_DCBZ 0x7c0007ec 318 /* TO = 31 for unconditional trap */ 319 #define INS_TW 0x7fe00008 320 321 /* LPIDs we support with this build -- runtime limit may be lower */ 322 #define KVMPPC_NR_LPIDS (LPID_RSVD + 1) 323 324 #endif /* __ASM_KVM_BOOK3S_H__ */ 325