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_dirty_map(struct kvm_memory_slot *memslot, 220 unsigned long gfn, unsigned long psize); 221 extern void kvmppc_invalidate_hpte(struct kvm *kvm, __be64 *hptep, 222 unsigned long pte_index); 223 void kvmppc_clear_ref_hpte(struct kvm *kvm, __be64 *hptep, 224 unsigned long pte_index); 225 extern void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long addr, 226 unsigned long *nb_ret); 227 extern void kvmppc_unpin_guest_page(struct kvm *kvm, void *addr, 228 unsigned long gpa, bool dirty); 229 extern long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags, 230 long pte_index, unsigned long pteh, unsigned long ptel, 231 pgd_t *pgdir, bool realmode, unsigned long *idx_ret); 232 extern long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags, 233 unsigned long pte_index, unsigned long avpn, 234 unsigned long *hpret); 235 extern long kvmppc_hv_get_dirty_log_hpt(struct kvm *kvm, 236 struct kvm_memory_slot *memslot, unsigned long *map); 237 extern void kvmppc_harvest_vpa_dirty(struct kvmppc_vpa *vpa, 238 struct kvm_memory_slot *memslot, 239 unsigned long *map); 240 extern void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr, 241 unsigned long mask); 242 extern void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr); 243 244 extern void kvmppc_entry_trampoline(void); 245 extern void kvmppc_hv_entry_trampoline(void); 246 extern u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst); 247 extern ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst); 248 extern int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd); 249 extern void kvmppc_pr_init_default_hcalls(struct kvm *kvm); 250 extern int kvmppc_hcall_impl_pr(unsigned long cmd); 251 extern int kvmppc_hcall_impl_hv_realmode(unsigned long cmd); 252 extern void kvmppc_copy_to_svcpu(struct kvm_vcpu *vcpu); 253 extern void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu); 254 extern int kvm_irq_bypass; 255 256 static inline struct kvmppc_vcpu_book3s *to_book3s(struct kvm_vcpu *vcpu) 257 { 258 return vcpu->arch.book3s; 259 } 260 261 /* Also add subarch specific defines */ 262 263 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 264 #include <asm/kvm_book3s_32.h> 265 #endif 266 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER 267 #include <asm/kvm_book3s_64.h> 268 #endif 269 270 static inline void kvmppc_set_gpr(struct kvm_vcpu *vcpu, int num, ulong val) 271 { 272 vcpu->arch.gpr[num] = val; 273 } 274 275 static inline ulong kvmppc_get_gpr(struct kvm_vcpu *vcpu, int num) 276 { 277 return vcpu->arch.gpr[num]; 278 } 279 280 static inline void kvmppc_set_cr(struct kvm_vcpu *vcpu, u32 val) 281 { 282 vcpu->arch.cr = val; 283 } 284 285 static inline u32 kvmppc_get_cr(struct kvm_vcpu *vcpu) 286 { 287 return vcpu->arch.cr; 288 } 289 290 static inline void kvmppc_set_xer(struct kvm_vcpu *vcpu, ulong val) 291 { 292 vcpu->arch.xer = val; 293 } 294 295 static inline ulong kvmppc_get_xer(struct kvm_vcpu *vcpu) 296 { 297 return vcpu->arch.xer; 298 } 299 300 static inline void kvmppc_set_ctr(struct kvm_vcpu *vcpu, ulong val) 301 { 302 vcpu->arch.ctr = val; 303 } 304 305 static inline ulong kvmppc_get_ctr(struct kvm_vcpu *vcpu) 306 { 307 return vcpu->arch.ctr; 308 } 309 310 static inline void kvmppc_set_lr(struct kvm_vcpu *vcpu, ulong val) 311 { 312 vcpu->arch.lr = val; 313 } 314 315 static inline ulong kvmppc_get_lr(struct kvm_vcpu *vcpu) 316 { 317 return vcpu->arch.lr; 318 } 319 320 static inline void kvmppc_set_pc(struct kvm_vcpu *vcpu, ulong val) 321 { 322 vcpu->arch.pc = val; 323 } 324 325 static inline ulong kvmppc_get_pc(struct kvm_vcpu *vcpu) 326 { 327 return vcpu->arch.pc; 328 } 329 330 static inline u64 kvmppc_get_msr(struct kvm_vcpu *vcpu); 331 static inline bool kvmppc_need_byteswap(struct kvm_vcpu *vcpu) 332 { 333 return (kvmppc_get_msr(vcpu) & MSR_LE) != (MSR_KERNEL & MSR_LE); 334 } 335 336 static inline ulong kvmppc_get_fault_dar(struct kvm_vcpu *vcpu) 337 { 338 return vcpu->arch.fault_dar; 339 } 340 341 static inline bool is_kvmppc_resume_guest(int r) 342 { 343 return (r == RESUME_GUEST || r == RESUME_GUEST_NV); 344 } 345 346 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm); 347 static inline bool kvmppc_supports_magic_page(struct kvm_vcpu *vcpu) 348 { 349 /* Only PR KVM supports the magic page */ 350 return !is_kvmppc_hv_enabled(vcpu->kvm); 351 } 352 353 extern int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu); 354 extern int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu); 355 356 /* Magic register values loaded into r3 and r4 before the 'sc' assembly 357 * instruction for the OSI hypercalls */ 358 #define OSI_SC_MAGIC_R3 0x113724FA 359 #define OSI_SC_MAGIC_R4 0x77810F9B 360 361 #define INS_DCBZ 0x7c0007ec 362 /* TO = 31 for unconditional trap */ 363 #define INS_TW 0x7fe00008 364 365 /* LPIDs we support with this build -- runtime limit may be lower */ 366 #define KVMPPC_NR_LPIDS (LPID_RSVD + 1) 367 368 #define SPLIT_HACK_MASK 0xff000000 369 #define SPLIT_HACK_OFFS 0xfb000000 370 371 #endif /* __ASM_KVM_BOOK3S_H__ */ 372