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