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 IBM Corp. 2008 16 * 17 * Authors: Hollis Blanchard <hollisb@us.ibm.com> 18 */ 19 20 #ifndef __POWERPC_KVM_PPC_H__ 21 #define __POWERPC_KVM_PPC_H__ 22 23 /* This file exists just so we can dereference kvm_vcpu, avoiding nested header 24 * dependencies. */ 25 26 #include <linux/mutex.h> 27 #include <linux/timer.h> 28 #include <linux/types.h> 29 #include <linux/kvm_types.h> 30 #include <linux/kvm_host.h> 31 #include <linux/bug.h> 32 #ifdef CONFIG_PPC_BOOK3S 33 #include <asm/kvm_book3s.h> 34 #else 35 #include <asm/kvm_booke.h> 36 #endif 37 #ifdef CONFIG_KVM_BOOK3S_64_HANDLER 38 #include <asm/paca.h> 39 #endif 40 41 enum emulation_result { 42 EMULATE_DONE, /* no further processing */ 43 EMULATE_DO_MMIO, /* kvm_run filled with MMIO request */ 44 EMULATE_DO_DCR, /* kvm_run filled with DCR request */ 45 EMULATE_FAIL, /* can't emulate this instruction */ 46 EMULATE_AGAIN, /* something went wrong. go again */ 47 EMULATE_EXIT_USER, /* emulation requires exit to user-space */ 48 }; 49 50 extern int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 51 extern int __kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); 52 extern void kvmppc_handler_highmem(void); 53 54 extern void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu); 55 extern int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, 56 unsigned int rt, unsigned int bytes, 57 int is_default_endian); 58 extern int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, 59 unsigned int rt, unsigned int bytes, 60 int is_default_endian); 61 extern int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, 62 u64 val, unsigned int bytes, 63 int is_default_endian); 64 65 extern int kvmppc_emulate_instruction(struct kvm_run *run, 66 struct kvm_vcpu *vcpu); 67 extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu); 68 extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu); 69 extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb); 70 extern void kvmppc_decrementer_func(unsigned long data); 71 extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu); 72 extern int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu); 73 extern void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu); 74 75 /* Core-specific hooks */ 76 77 extern void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr, 78 unsigned int gtlb_idx); 79 extern void kvmppc_mmu_priv_switch(struct kvm_vcpu *vcpu, int usermode); 80 extern void kvmppc_mmu_switch_pid(struct kvm_vcpu *vcpu, u32 pid); 81 extern void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu); 82 extern int kvmppc_mmu_init(struct kvm_vcpu *vcpu); 83 extern int kvmppc_mmu_dtlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 84 extern int kvmppc_mmu_itlb_index(struct kvm_vcpu *vcpu, gva_t eaddr); 85 extern gpa_t kvmppc_mmu_xlate(struct kvm_vcpu *vcpu, unsigned int gtlb_index, 86 gva_t eaddr); 87 extern void kvmppc_mmu_dtlb_miss(struct kvm_vcpu *vcpu); 88 extern void kvmppc_mmu_itlb_miss(struct kvm_vcpu *vcpu); 89 90 extern struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, 91 unsigned int id); 92 extern void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu); 93 extern int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu); 94 extern int kvmppc_core_check_processor_compat(void); 95 extern int kvmppc_core_vcpu_translate(struct kvm_vcpu *vcpu, 96 struct kvm_translation *tr); 97 98 extern void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu); 99 extern void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu); 100 101 extern int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu); 102 extern int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu); 103 extern void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags); 104 extern void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu); 105 extern void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu); 106 extern void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 107 struct kvm_interrupt *irq); 108 extern void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu); 109 extern void kvmppc_core_flush_tlb(struct kvm_vcpu *vcpu); 110 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 111 112 extern int kvmppc_booke_init(void); 113 extern void kvmppc_booke_exit(void); 114 115 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 116 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 117 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 118 119 extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp); 120 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp); 121 extern void kvmppc_free_hpt(struct kvm *kvm); 122 extern long kvmppc_prepare_vrma(struct kvm *kvm, 123 struct kvm_userspace_memory_region *mem); 124 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 125 struct kvm_memory_slot *memslot, unsigned long porder); 126 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 127 128 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 129 struct kvm_create_spapr_tce *args); 130 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 131 unsigned long ioba, unsigned long tce); 132 extern struct kvm_rma_info *kvm_alloc_rma(void); 133 extern void kvm_release_rma(struct kvm_rma_info *ri); 134 extern struct page *kvm_alloc_hpt(unsigned long nr_pages); 135 extern void kvm_release_hpt(struct page *page, unsigned long nr_pages); 136 extern int kvmppc_core_init_vm(struct kvm *kvm); 137 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 138 extern void kvmppc_core_free_memslot(struct kvm *kvm, 139 struct kvm_memory_slot *free, 140 struct kvm_memory_slot *dont); 141 extern int kvmppc_core_create_memslot(struct kvm *kvm, 142 struct kvm_memory_slot *slot, 143 unsigned long npages); 144 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 145 struct kvm_memory_slot *memslot, 146 struct kvm_userspace_memory_region *mem); 147 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 148 struct kvm_userspace_memory_region *mem, 149 const struct kvm_memory_slot *old); 150 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 151 struct kvm_ppc_smmu_info *info); 152 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 153 struct kvm_memory_slot *memslot); 154 155 extern int kvmppc_bookehv_init(void); 156 extern void kvmppc_bookehv_exit(void); 157 158 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 159 160 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 161 162 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 163 164 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 165 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 166 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 167 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 168 u32 priority); 169 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 170 u32 *priority); 171 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 172 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 173 174 union kvmppc_one_reg { 175 u32 wval; 176 u64 dval; 177 vector128 vval; 178 u64 vsxval[2]; 179 struct { 180 u64 addr; 181 u64 length; 182 } vpaval; 183 }; 184 185 struct kvmppc_ops { 186 struct module *owner; 187 int (*get_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 188 int (*set_sregs)(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 189 int (*get_one_reg)(struct kvm_vcpu *vcpu, u64 id, 190 union kvmppc_one_reg *val); 191 int (*set_one_reg)(struct kvm_vcpu *vcpu, u64 id, 192 union kvmppc_one_reg *val); 193 void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu); 194 void (*vcpu_put)(struct kvm_vcpu *vcpu); 195 void (*set_msr)(struct kvm_vcpu *vcpu, u64 msr); 196 int (*vcpu_run)(struct kvm_run *run, struct kvm_vcpu *vcpu); 197 struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned int id); 198 void (*vcpu_free)(struct kvm_vcpu *vcpu); 199 int (*check_requests)(struct kvm_vcpu *vcpu); 200 int (*get_dirty_log)(struct kvm *kvm, struct kvm_dirty_log *log); 201 void (*flush_memslot)(struct kvm *kvm, struct kvm_memory_slot *memslot); 202 int (*prepare_memory_region)(struct kvm *kvm, 203 struct kvm_memory_slot *memslot, 204 struct kvm_userspace_memory_region *mem); 205 void (*commit_memory_region)(struct kvm *kvm, 206 struct kvm_userspace_memory_region *mem, 207 const struct kvm_memory_slot *old); 208 int (*unmap_hva)(struct kvm *kvm, unsigned long hva); 209 int (*unmap_hva_range)(struct kvm *kvm, unsigned long start, 210 unsigned long end); 211 int (*age_hva)(struct kvm *kvm, unsigned long hva); 212 int (*test_age_hva)(struct kvm *kvm, unsigned long hva); 213 void (*set_spte_hva)(struct kvm *kvm, unsigned long hva, pte_t pte); 214 void (*mmu_destroy)(struct kvm_vcpu *vcpu); 215 void (*free_memslot)(struct kvm_memory_slot *free, 216 struct kvm_memory_slot *dont); 217 int (*create_memslot)(struct kvm_memory_slot *slot, 218 unsigned long npages); 219 int (*init_vm)(struct kvm *kvm); 220 void (*destroy_vm)(struct kvm *kvm); 221 int (*get_smmu_info)(struct kvm *kvm, struct kvm_ppc_smmu_info *info); 222 int (*emulate_op)(struct kvm_run *run, struct kvm_vcpu *vcpu, 223 unsigned int inst, int *advance); 224 int (*emulate_mtspr)(struct kvm_vcpu *vcpu, int sprn, ulong spr_val); 225 int (*emulate_mfspr)(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val); 226 void (*fast_vcpu_kick)(struct kvm_vcpu *vcpu); 227 long (*arch_vm_ioctl)(struct file *filp, unsigned int ioctl, 228 unsigned long arg); 229 230 }; 231 232 extern struct kvmppc_ops *kvmppc_hv_ops; 233 extern struct kvmppc_ops *kvmppc_pr_ops; 234 235 static inline bool is_kvmppc_hv_enabled(struct kvm *kvm) 236 { 237 return kvm->arch.kvm_ops == kvmppc_hv_ops; 238 } 239 240 /* 241 * Cuts out inst bits with ordering according to spec. 242 * That means the leftmost bit is zero. All given bits are included. 243 */ 244 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 245 { 246 u32 r; 247 u32 mask; 248 249 BUG_ON(msb > lsb); 250 251 mask = (1 << (lsb - msb + 1)) - 1; 252 r = (inst >> (63 - lsb)) & mask; 253 254 return r; 255 } 256 257 /* 258 * Replaces inst bits with ordering according to spec. 259 */ 260 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 261 { 262 u32 r; 263 u32 mask; 264 265 BUG_ON(msb > lsb); 266 267 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 268 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 269 270 return r; 271 } 272 273 #define one_reg_size(id) \ 274 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 275 276 #define get_reg_val(id, reg) ({ \ 277 union kvmppc_one_reg __u; \ 278 switch (one_reg_size(id)) { \ 279 case 4: __u.wval = (reg); break; \ 280 case 8: __u.dval = (reg); break; \ 281 default: BUG(); \ 282 } \ 283 __u; \ 284 }) 285 286 287 #define set_reg_val(id, val) ({ \ 288 u64 __v; \ 289 switch (one_reg_size(id)) { \ 290 case 4: __v = (val).wval; break; \ 291 case 8: __v = (val).dval; break; \ 292 default: BUG(); \ 293 } \ 294 __v; \ 295 }) 296 297 int kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 298 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 299 300 int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 301 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 302 303 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 304 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 305 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 306 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 307 308 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 309 310 struct openpic; 311 312 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE 313 extern void kvm_cma_reserve(void) __init; 314 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 315 { 316 paca[cpu].kvm_hstate.xics_phys = addr; 317 } 318 319 static inline u32 kvmppc_get_xics_latch(void) 320 { 321 u32 xirr; 322 323 xirr = get_paca()->kvm_hstate.saved_xirr; 324 get_paca()->kvm_hstate.saved_xirr = 0; 325 return xirr; 326 } 327 328 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 329 { 330 paca[cpu].kvm_hstate.host_ipi = host_ipi; 331 } 332 333 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 334 { 335 vcpu->kvm->arch.kvm_ops->fast_vcpu_kick(vcpu); 336 } 337 338 #else 339 static inline void __init kvm_cma_reserve(void) 340 {} 341 342 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 343 {} 344 345 static inline u32 kvmppc_get_xics_latch(void) 346 { 347 return 0; 348 } 349 350 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 351 {} 352 353 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 354 { 355 kvm_vcpu_kick(vcpu); 356 } 357 #endif 358 359 #ifdef CONFIG_KVM_XICS 360 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 361 { 362 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 363 } 364 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 365 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server); 366 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args); 367 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 368 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 369 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 370 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 371 struct kvm_vcpu *vcpu, u32 cpu); 372 #else 373 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 374 { return 0; } 375 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 376 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, 377 unsigned long server) 378 { return -EINVAL; } 379 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm, 380 struct kvm_irq_level *args) 381 { return -ENOTTY; } 382 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 383 { return 0; } 384 #endif 385 386 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 387 { 388 #ifdef CONFIG_KVM_BOOKE_HV 389 mtspr(SPRN_GEPR, epr); 390 #elif defined(CONFIG_BOOKE) 391 vcpu->arch.epr = epr; 392 #endif 393 } 394 395 #ifdef CONFIG_KVM_MPIC 396 397 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 398 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 399 u32 cpu); 400 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 401 402 #else 403 404 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 405 { 406 } 407 408 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 409 struct kvm_vcpu *vcpu, u32 cpu) 410 { 411 return -EINVAL; 412 } 413 414 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 415 struct kvm_vcpu *vcpu) 416 { 417 } 418 419 #endif /* CONFIG_KVM_MPIC */ 420 421 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 422 struct kvm_config_tlb *cfg); 423 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 424 struct kvm_dirty_tlb *cfg); 425 426 long kvmppc_alloc_lpid(void); 427 void kvmppc_claim_lpid(long lpid); 428 void kvmppc_free_lpid(long lpid); 429 void kvmppc_init_lpid(unsigned long nr_lpids); 430 431 static inline void kvmppc_mmu_flush_icache(pfn_t pfn) 432 { 433 struct page *page; 434 /* 435 * We can only access pages that the kernel maps 436 * as memory. Bail out for unmapped ones. 437 */ 438 if (!pfn_valid(pfn)) 439 return; 440 441 /* Clear i-cache for new pages */ 442 page = pfn_to_page(pfn); 443 if (!test_bit(PG_arch_1, &page->flags)) { 444 flush_dcache_icache_page(page); 445 set_bit(PG_arch_1, &page->flags); 446 } 447 } 448 449 /* 450 * Please call after prepare_to_enter. This function puts the lazy ee and irq 451 * disabled tracking state back to normal mode, without actually enabling 452 * interrupts. 453 */ 454 static inline void kvmppc_fix_ee_before_entry(void) 455 { 456 trace_hardirqs_on(); 457 458 #ifdef CONFIG_PPC64 459 /* 460 * To avoid races, the caller must have gone directly from having 461 * interrupts fully-enabled to hard-disabled. 462 */ 463 WARN_ON(local_paca->irq_happened != PACA_IRQ_HARD_DIS); 464 465 /* Only need to enable IRQs by hard enabling them after this */ 466 local_paca->irq_happened = 0; 467 local_paca->soft_enabled = 1; 468 #endif 469 } 470 471 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 472 { 473 ulong ea; 474 ulong msr_64bit = 0; 475 476 ea = kvmppc_get_gpr(vcpu, rb); 477 if (ra) 478 ea += kvmppc_get_gpr(vcpu, ra); 479 480 #if defined(CONFIG_PPC_BOOK3E_64) 481 msr_64bit = MSR_CM; 482 #elif defined(CONFIG_PPC_BOOK3S_64) 483 msr_64bit = MSR_SF; 484 #endif 485 486 if (!(vcpu->arch.shared->msr & msr_64bit)) 487 ea = (uint32_t)ea; 488 489 return ea; 490 } 491 492 extern void xics_wake_cpu(int cpu); 493 494 #endif /* __POWERPC_KVM_PPC_H__ */ 495