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); 109 110 extern int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, 111 unsigned int op, int *advance); 112 extern int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, 113 ulong val); 114 extern int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, 115 ulong *val); 116 extern int kvmppc_core_check_requests(struct kvm_vcpu *vcpu); 117 118 extern int kvmppc_booke_init(void); 119 extern void kvmppc_booke_exit(void); 120 121 extern void kvmppc_core_destroy_mmu(struct kvm_vcpu *vcpu); 122 extern int kvmppc_kvm_pv(struct kvm_vcpu *vcpu); 123 extern void kvmppc_map_magic(struct kvm_vcpu *vcpu); 124 125 extern long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp); 126 extern long kvmppc_alloc_reset_hpt(struct kvm *kvm, u32 *htab_orderp); 127 extern void kvmppc_free_hpt(struct kvm *kvm); 128 extern long kvmppc_prepare_vrma(struct kvm *kvm, 129 struct kvm_userspace_memory_region *mem); 130 extern void kvmppc_map_vrma(struct kvm_vcpu *vcpu, 131 struct kvm_memory_slot *memslot, unsigned long porder); 132 extern int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu); 133 134 extern long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, 135 struct kvm_create_spapr_tce *args); 136 extern long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn, 137 unsigned long ioba, unsigned long tce); 138 extern long kvm_vm_ioctl_allocate_rma(struct kvm *kvm, 139 struct kvm_allocate_rma *rma); 140 extern struct kvm_rma_info *kvm_alloc_rma(void); 141 extern void kvm_release_rma(struct kvm_rma_info *ri); 142 extern struct page *kvm_alloc_hpt(unsigned long nr_pages); 143 extern void kvm_release_hpt(struct page *page, unsigned long nr_pages); 144 extern int kvmppc_core_init_vm(struct kvm *kvm); 145 extern void kvmppc_core_destroy_vm(struct kvm *kvm); 146 extern void kvmppc_core_free_memslot(struct kvm_memory_slot *free, 147 struct kvm_memory_slot *dont); 148 extern int kvmppc_core_create_memslot(struct kvm_memory_slot *slot, 149 unsigned long npages); 150 extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, 151 struct kvm_memory_slot *memslot, 152 struct kvm_userspace_memory_region *mem); 153 extern void kvmppc_core_commit_memory_region(struct kvm *kvm, 154 struct kvm_userspace_memory_region *mem, 155 const struct kvm_memory_slot *old); 156 extern int kvm_vm_ioctl_get_smmu_info(struct kvm *kvm, 157 struct kvm_ppc_smmu_info *info); 158 extern void kvmppc_core_flush_memslot(struct kvm *kvm, 159 struct kvm_memory_slot *memslot); 160 161 extern int kvmppc_bookehv_init(void); 162 extern void kvmppc_bookehv_exit(void); 163 164 extern int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu); 165 166 extern int kvm_vm_ioctl_get_htab_fd(struct kvm *kvm, struct kvm_get_htab_fd *); 167 168 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq); 169 170 extern int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp); 171 extern int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu); 172 extern void kvmppc_rtas_tokens_free(struct kvm *kvm); 173 extern int kvmppc_xics_set_xive(struct kvm *kvm, u32 irq, u32 server, 174 u32 priority); 175 extern int kvmppc_xics_get_xive(struct kvm *kvm, u32 irq, u32 *server, 176 u32 *priority); 177 extern int kvmppc_xics_int_on(struct kvm *kvm, u32 irq); 178 extern int kvmppc_xics_int_off(struct kvm *kvm, u32 irq); 179 180 /* 181 * Cuts out inst bits with ordering according to spec. 182 * That means the leftmost bit is zero. All given bits are included. 183 */ 184 static inline u32 kvmppc_get_field(u64 inst, int msb, int lsb) 185 { 186 u32 r; 187 u32 mask; 188 189 BUG_ON(msb > lsb); 190 191 mask = (1 << (lsb - msb + 1)) - 1; 192 r = (inst >> (63 - lsb)) & mask; 193 194 return r; 195 } 196 197 /* 198 * Replaces inst bits with ordering according to spec. 199 */ 200 static inline u32 kvmppc_set_field(u64 inst, int msb, int lsb, int value) 201 { 202 u32 r; 203 u32 mask; 204 205 BUG_ON(msb > lsb); 206 207 mask = ((1 << (lsb - msb + 1)) - 1) << (63 - lsb); 208 r = (inst & ~mask) | ((value << (63 - lsb)) & mask); 209 210 return r; 211 } 212 213 union kvmppc_one_reg { 214 u32 wval; 215 u64 dval; 216 vector128 vval; 217 u64 vsxval[2]; 218 struct { 219 u64 addr; 220 u64 length; 221 } vpaval; 222 }; 223 224 #define one_reg_size(id) \ 225 (1ul << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) 226 227 #define get_reg_val(id, reg) ({ \ 228 union kvmppc_one_reg __u; \ 229 switch (one_reg_size(id)) { \ 230 case 4: __u.wval = (reg); break; \ 231 case 8: __u.dval = (reg); break; \ 232 default: BUG(); \ 233 } \ 234 __u; \ 235 }) 236 237 238 #define set_reg_val(id, val) ({ \ 239 u64 __v; \ 240 switch (one_reg_size(id)) { \ 241 case 4: __v = (val).wval; break; \ 242 case 8: __v = (val).dval; break; \ 243 default: BUG(); \ 244 } \ 245 __v; \ 246 }) 247 248 void kvmppc_core_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 249 int kvmppc_core_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 250 251 void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 252 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs); 253 254 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 255 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg); 256 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 257 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *); 258 259 void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 pid); 260 261 struct openpic; 262 263 #ifdef CONFIG_KVM_BOOK3S_64_HV 264 extern void kvm_cma_reserve(void) __init; 265 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 266 { 267 paca[cpu].kvm_hstate.xics_phys = addr; 268 } 269 270 static inline u32 kvmppc_get_xics_latch(void) 271 { 272 u32 xirr = get_paca()->kvm_hstate.saved_xirr; 273 274 get_paca()->kvm_hstate.saved_xirr = 0; 275 276 return xirr; 277 } 278 279 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 280 { 281 paca[cpu].kvm_hstate.host_ipi = host_ipi; 282 } 283 284 extern void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu); 285 286 #else 287 static inline void __init kvm_cma_reserve(void) 288 {} 289 290 static inline void kvmppc_set_xics_phys(int cpu, unsigned long addr) 291 {} 292 293 static inline u32 kvmppc_get_xics_latch(void) 294 { 295 return 0; 296 } 297 298 static inline void kvmppc_set_host_ipi(int cpu, u8 host_ipi) 299 {} 300 301 static inline void kvmppc_fast_vcpu_kick(struct kvm_vcpu *vcpu) 302 { 303 kvm_vcpu_kick(vcpu); 304 } 305 #endif 306 307 #ifdef CONFIG_KVM_XICS 308 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 309 { 310 return vcpu->arch.irq_type == KVMPPC_IRQ_XICS; 311 } 312 extern void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu); 313 extern int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, unsigned long server); 314 extern int kvm_vm_ioctl_xics_irq(struct kvm *kvm, struct kvm_irq_level *args); 315 extern int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd); 316 extern u64 kvmppc_xics_get_icp(struct kvm_vcpu *vcpu); 317 extern int kvmppc_xics_set_icp(struct kvm_vcpu *vcpu, u64 icpval); 318 extern int kvmppc_xics_connect_vcpu(struct kvm_device *dev, 319 struct kvm_vcpu *vcpu, u32 cpu); 320 #else 321 static inline int kvmppc_xics_enabled(struct kvm_vcpu *vcpu) 322 { return 0; } 323 static inline void kvmppc_xics_free_icp(struct kvm_vcpu *vcpu) { } 324 static inline int kvmppc_xics_create_icp(struct kvm_vcpu *vcpu, 325 unsigned long server) 326 { return -EINVAL; } 327 static inline int kvm_vm_ioctl_xics_irq(struct kvm *kvm, 328 struct kvm_irq_level *args) 329 { return -ENOTTY; } 330 static inline int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 cmd) 331 { return 0; } 332 #endif 333 334 static inline void kvmppc_set_epr(struct kvm_vcpu *vcpu, u32 epr) 335 { 336 #ifdef CONFIG_KVM_BOOKE_HV 337 mtspr(SPRN_GEPR, epr); 338 #elif defined(CONFIG_BOOKE) 339 vcpu->arch.epr = epr; 340 #endif 341 } 342 343 #ifdef CONFIG_KVM_MPIC 344 345 void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu); 346 int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, struct kvm_vcpu *vcpu, 347 u32 cpu); 348 void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, struct kvm_vcpu *vcpu); 349 350 #else 351 352 static inline void kvmppc_mpic_set_epr(struct kvm_vcpu *vcpu) 353 { 354 } 355 356 static inline int kvmppc_mpic_connect_vcpu(struct kvm_device *dev, 357 struct kvm_vcpu *vcpu, u32 cpu) 358 { 359 return -EINVAL; 360 } 361 362 static inline void kvmppc_mpic_disconnect_vcpu(struct openpic *opp, 363 struct kvm_vcpu *vcpu) 364 { 365 } 366 367 #endif /* CONFIG_KVM_MPIC */ 368 369 int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, 370 struct kvm_config_tlb *cfg); 371 int kvm_vcpu_ioctl_dirty_tlb(struct kvm_vcpu *vcpu, 372 struct kvm_dirty_tlb *cfg); 373 374 long kvmppc_alloc_lpid(void); 375 void kvmppc_claim_lpid(long lpid); 376 void kvmppc_free_lpid(long lpid); 377 void kvmppc_init_lpid(unsigned long nr_lpids); 378 379 static inline void kvmppc_mmu_flush_icache(pfn_t pfn) 380 { 381 struct page *page; 382 /* 383 * We can only access pages that the kernel maps 384 * as memory. Bail out for unmapped ones. 385 */ 386 if (!pfn_valid(pfn)) 387 return; 388 389 /* Clear i-cache for new pages */ 390 page = pfn_to_page(pfn); 391 if (!test_bit(PG_arch_1, &page->flags)) { 392 flush_dcache_icache_page(page); 393 set_bit(PG_arch_1, &page->flags); 394 } 395 } 396 397 /* 398 * Please call after prepare_to_enter. This function puts the lazy ee and irq 399 * disabled tracking state back to normal mode, without actually enabling 400 * interrupts. 401 */ 402 static inline void kvmppc_fix_ee_before_entry(void) 403 { 404 trace_hardirqs_on(); 405 406 #ifdef CONFIG_PPC64 407 /* Only need to enable IRQs by hard enabling them after this */ 408 local_paca->irq_happened = 0; 409 local_paca->soft_enabled = 1; 410 #endif 411 } 412 413 static inline ulong kvmppc_get_ea_indexed(struct kvm_vcpu *vcpu, int ra, int rb) 414 { 415 ulong ea; 416 ulong msr_64bit = 0; 417 418 ea = kvmppc_get_gpr(vcpu, rb); 419 if (ra) 420 ea += kvmppc_get_gpr(vcpu, ra); 421 422 #if defined(CONFIG_PPC_BOOK3E_64) 423 msr_64bit = MSR_CM; 424 #elif defined(CONFIG_PPC_BOOK3S_64) 425 msr_64bit = MSR_SF; 426 #endif 427 428 if (!(vcpu->arch.shared->msr & msr_64bit)) 429 ea = (uint32_t)ea; 430 431 return ea; 432 } 433 434 extern void xics_wake_cpu(int cpu); 435 436 #endif /* __POWERPC_KVM_PPC_H__ */ 437