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