1 /* 2 * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved. 3 * 4 * Authors: 5 * Alexander Graf <agraf@suse.de> 6 * Kevin Wolf <mail@kevin-wolf.de> 7 * 8 * Description: 9 * This file is derived from arch/powerpc/kvm/44x.c, 10 * by Hollis Blanchard <hollisb@us.ibm.com>. 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License, version 2, as 14 * published by the Free Software Foundation. 15 */ 16 17 #include <linux/kvm_host.h> 18 #include <linux/err.h> 19 #include <linux/export.h> 20 #include <linux/slab.h> 21 #include <linux/module.h> 22 #include <linux/miscdevice.h> 23 24 #include <asm/reg.h> 25 #include <asm/cputable.h> 26 #include <asm/cacheflush.h> 27 #include <asm/tlbflush.h> 28 #include <linux/uaccess.h> 29 #include <asm/io.h> 30 #include <asm/kvm_ppc.h> 31 #include <asm/kvm_book3s.h> 32 #include <asm/mmu_context.h> 33 #include <asm/page.h> 34 #include <linux/gfp.h> 35 #include <linux/sched.h> 36 #include <linux/vmalloc.h> 37 #include <linux/highmem.h> 38 39 #include "book3s.h" 40 #include "trace.h" 41 42 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU 43 44 /* #define EXIT_DEBUG */ 45 46 struct kvm_stats_debugfs_item debugfs_entries[] = { 47 { "exits", VCPU_STAT(sum_exits) }, 48 { "mmio", VCPU_STAT(mmio_exits) }, 49 { "sig", VCPU_STAT(signal_exits) }, 50 { "sysc", VCPU_STAT(syscall_exits) }, 51 { "inst_emu", VCPU_STAT(emulated_inst_exits) }, 52 { "dec", VCPU_STAT(dec_exits) }, 53 { "ext_intr", VCPU_STAT(ext_intr_exits) }, 54 { "queue_intr", VCPU_STAT(queue_intr) }, 55 { "halt_poll_success_ns", VCPU_STAT(halt_poll_success_ns) }, 56 { "halt_poll_fail_ns", VCPU_STAT(halt_poll_fail_ns) }, 57 { "halt_wait_ns", VCPU_STAT(halt_wait_ns) }, 58 { "halt_successful_poll", VCPU_STAT(halt_successful_poll), }, 59 { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll), }, 60 { "halt_successful_wait", VCPU_STAT(halt_successful_wait) }, 61 { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) }, 62 { "halt_wakeup", VCPU_STAT(halt_wakeup) }, 63 { "pf_storage", VCPU_STAT(pf_storage) }, 64 { "sp_storage", VCPU_STAT(sp_storage) }, 65 { "pf_instruc", VCPU_STAT(pf_instruc) }, 66 { "sp_instruc", VCPU_STAT(sp_instruc) }, 67 { "ld", VCPU_STAT(ld) }, 68 { "ld_slow", VCPU_STAT(ld_slow) }, 69 { "st", VCPU_STAT(st) }, 70 { "st_slow", VCPU_STAT(st_slow) }, 71 { "pthru_all", VCPU_STAT(pthru_all) }, 72 { "pthru_host", VCPU_STAT(pthru_host) }, 73 { "pthru_bad_aff", VCPU_STAT(pthru_bad_aff) }, 74 { NULL } 75 }; 76 77 void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu) 78 { 79 if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) { 80 ulong pc = kvmppc_get_pc(vcpu); 81 if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS) 82 kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK); 83 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK; 84 } 85 } 86 EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real); 87 88 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) 89 { 90 if (!is_kvmppc_hv_enabled(vcpu->kvm)) 91 return to_book3s(vcpu)->hior; 92 return 0; 93 } 94 95 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, 96 unsigned long pending_now, unsigned long old_pending) 97 { 98 if (is_kvmppc_hv_enabled(vcpu->kvm)) 99 return; 100 if (pending_now) 101 kvmppc_set_int_pending(vcpu, 1); 102 else if (old_pending) 103 kvmppc_set_int_pending(vcpu, 0); 104 } 105 106 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) 107 { 108 ulong crit_raw; 109 ulong crit_r1; 110 bool crit; 111 112 if (is_kvmppc_hv_enabled(vcpu->kvm)) 113 return false; 114 115 crit_raw = kvmppc_get_critical(vcpu); 116 crit_r1 = kvmppc_get_gpr(vcpu, 1); 117 118 /* Truncate crit indicators in 32 bit mode */ 119 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) { 120 crit_raw &= 0xffffffff; 121 crit_r1 &= 0xffffffff; 122 } 123 124 /* Critical section when crit == r1 */ 125 crit = (crit_raw == crit_r1); 126 /* ... and we're in supervisor mode */ 127 crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR); 128 129 return crit; 130 } 131 132 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags) 133 { 134 kvmppc_unfixup_split_real(vcpu); 135 kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu)); 136 kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags); 137 kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec); 138 vcpu->arch.mmu.reset_msr(vcpu); 139 } 140 141 static int kvmppc_book3s_vec2irqprio(unsigned int vec) 142 { 143 unsigned int prio; 144 145 switch (vec) { 146 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break; 147 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break; 148 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break; 149 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break; 150 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break; 151 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break; 152 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break; 153 case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break; 154 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break; 155 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break; 156 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break; 157 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break; 158 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break; 159 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break; 160 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break; 161 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break; 162 case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; break; 163 default: prio = BOOK3S_IRQPRIO_MAX; break; 164 } 165 166 return prio; 167 } 168 169 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu, 170 unsigned int vec) 171 { 172 unsigned long old_pending = vcpu->arch.pending_exceptions; 173 174 clear_bit(kvmppc_book3s_vec2irqprio(vec), 175 &vcpu->arch.pending_exceptions); 176 177 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions, 178 old_pending); 179 } 180 181 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec) 182 { 183 vcpu->stat.queue_intr++; 184 185 set_bit(kvmppc_book3s_vec2irqprio(vec), 186 &vcpu->arch.pending_exceptions); 187 #ifdef EXIT_DEBUG 188 printk(KERN_INFO "Queueing interrupt %x\n", vec); 189 #endif 190 } 191 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio); 192 193 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags) 194 { 195 /* might as well deliver this straight away */ 196 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags); 197 } 198 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program); 199 200 void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu) 201 { 202 /* might as well deliver this straight away */ 203 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, 0); 204 } 205 206 void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu) 207 { 208 /* might as well deliver this straight away */ 209 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_ALTIVEC, 0); 210 } 211 212 void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu) 213 { 214 /* might as well deliver this straight away */ 215 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_VSX, 0); 216 } 217 218 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu) 219 { 220 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER); 221 } 222 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec); 223 224 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu) 225 { 226 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions); 227 } 228 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec); 229 230 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu) 231 { 232 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER); 233 } 234 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec); 235 236 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 237 struct kvm_interrupt *irq) 238 { 239 unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL; 240 241 if (irq->irq == KVM_INTERRUPT_SET_LEVEL) 242 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL; 243 244 kvmppc_book3s_queue_irqprio(vcpu, vec); 245 } 246 247 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu) 248 { 249 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL); 250 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL); 251 } 252 253 void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar, 254 ulong flags) 255 { 256 kvmppc_set_dar(vcpu, dar); 257 kvmppc_set_dsisr(vcpu, flags); 258 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE); 259 } 260 EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage); /* used by kvm_hv */ 261 262 void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags) 263 { 264 u64 msr = kvmppc_get_msr(vcpu); 265 msr &= ~(SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT); 266 msr |= flags & (SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT); 267 kvmppc_set_msr_fast(vcpu, msr); 268 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE); 269 } 270 271 static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, 272 unsigned int priority) 273 { 274 int deliver = 1; 275 int vec = 0; 276 bool crit = kvmppc_critical_section(vcpu); 277 278 switch (priority) { 279 case BOOK3S_IRQPRIO_DECREMENTER: 280 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; 281 vec = BOOK3S_INTERRUPT_DECREMENTER; 282 break; 283 case BOOK3S_IRQPRIO_EXTERNAL: 284 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: 285 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; 286 vec = BOOK3S_INTERRUPT_EXTERNAL; 287 break; 288 case BOOK3S_IRQPRIO_SYSTEM_RESET: 289 vec = BOOK3S_INTERRUPT_SYSTEM_RESET; 290 break; 291 case BOOK3S_IRQPRIO_MACHINE_CHECK: 292 vec = BOOK3S_INTERRUPT_MACHINE_CHECK; 293 break; 294 case BOOK3S_IRQPRIO_DATA_STORAGE: 295 vec = BOOK3S_INTERRUPT_DATA_STORAGE; 296 break; 297 case BOOK3S_IRQPRIO_INST_STORAGE: 298 vec = BOOK3S_INTERRUPT_INST_STORAGE; 299 break; 300 case BOOK3S_IRQPRIO_DATA_SEGMENT: 301 vec = BOOK3S_INTERRUPT_DATA_SEGMENT; 302 break; 303 case BOOK3S_IRQPRIO_INST_SEGMENT: 304 vec = BOOK3S_INTERRUPT_INST_SEGMENT; 305 break; 306 case BOOK3S_IRQPRIO_ALIGNMENT: 307 vec = BOOK3S_INTERRUPT_ALIGNMENT; 308 break; 309 case BOOK3S_IRQPRIO_PROGRAM: 310 vec = BOOK3S_INTERRUPT_PROGRAM; 311 break; 312 case BOOK3S_IRQPRIO_VSX: 313 vec = BOOK3S_INTERRUPT_VSX; 314 break; 315 case BOOK3S_IRQPRIO_ALTIVEC: 316 vec = BOOK3S_INTERRUPT_ALTIVEC; 317 break; 318 case BOOK3S_IRQPRIO_FP_UNAVAIL: 319 vec = BOOK3S_INTERRUPT_FP_UNAVAIL; 320 break; 321 case BOOK3S_IRQPRIO_SYSCALL: 322 vec = BOOK3S_INTERRUPT_SYSCALL; 323 break; 324 case BOOK3S_IRQPRIO_DEBUG: 325 vec = BOOK3S_INTERRUPT_TRACE; 326 break; 327 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR: 328 vec = BOOK3S_INTERRUPT_PERFMON; 329 break; 330 case BOOK3S_IRQPRIO_FAC_UNAVAIL: 331 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL; 332 break; 333 default: 334 deliver = 0; 335 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority); 336 break; 337 } 338 339 #if 0 340 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver); 341 #endif 342 343 if (deliver) 344 kvmppc_inject_interrupt(vcpu, vec, 0); 345 346 return deliver; 347 } 348 349 /* 350 * This function determines if an irqprio should be cleared once issued. 351 */ 352 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority) 353 { 354 switch (priority) { 355 case BOOK3S_IRQPRIO_DECREMENTER: 356 /* DEC interrupts get cleared by mtdec */ 357 return false; 358 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: 359 /* External interrupts get cleared by userspace */ 360 return false; 361 } 362 363 return true; 364 } 365 366 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu) 367 { 368 unsigned long *pending = &vcpu->arch.pending_exceptions; 369 unsigned long old_pending = vcpu->arch.pending_exceptions; 370 unsigned int priority; 371 372 #ifdef EXIT_DEBUG 373 if (vcpu->arch.pending_exceptions) 374 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions); 375 #endif 376 priority = __ffs(*pending); 377 while (priority < BOOK3S_IRQPRIO_MAX) { 378 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) && 379 clear_irqprio(vcpu, priority)) { 380 clear_bit(priority, &vcpu->arch.pending_exceptions); 381 break; 382 } 383 384 priority = find_next_bit(pending, 385 BITS_PER_BYTE * sizeof(*pending), 386 priority + 1); 387 } 388 389 /* Tell the guest about our interrupt status */ 390 kvmppc_update_int_pending(vcpu, *pending, old_pending); 391 392 return 0; 393 } 394 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter); 395 396 kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing, 397 bool *writable) 398 { 399 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM; 400 gfn_t gfn = gpa >> PAGE_SHIFT; 401 402 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) 403 mp_pa = (uint32_t)mp_pa; 404 405 /* Magic page override */ 406 gpa &= ~0xFFFULL; 407 if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) { 408 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK; 409 kvm_pfn_t pfn; 410 411 pfn = (kvm_pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT; 412 get_page(pfn_to_page(pfn)); 413 if (writable) 414 *writable = true; 415 return pfn; 416 } 417 418 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable); 419 } 420 EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn); 421 422 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid, 423 enum xlate_readwrite xlrw, struct kvmppc_pte *pte) 424 { 425 bool data = (xlid == XLATE_DATA); 426 bool iswrite = (xlrw == XLATE_WRITE); 427 int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR)); 428 int r; 429 430 if (relocated) { 431 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite); 432 } else { 433 pte->eaddr = eaddr; 434 pte->raddr = eaddr & KVM_PAM; 435 pte->vpage = VSID_REAL | eaddr >> 12; 436 pte->may_read = true; 437 pte->may_write = true; 438 pte->may_execute = true; 439 r = 0; 440 441 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR && 442 !data) { 443 if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) && 444 ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)) 445 pte->raddr &= ~SPLIT_HACK_MASK; 446 } 447 } 448 449 return r; 450 } 451 452 int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type, 453 u32 *inst) 454 { 455 ulong pc = kvmppc_get_pc(vcpu); 456 int r; 457 458 if (type == INST_SC) 459 pc -= 4; 460 461 r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false); 462 if (r == EMULATE_DONE) 463 return r; 464 else 465 return EMULATE_AGAIN; 466 } 467 EXPORT_SYMBOL_GPL(kvmppc_load_last_inst); 468 469 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) 470 { 471 return 0; 472 } 473 474 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu) 475 { 476 return 0; 477 } 478 479 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu) 480 { 481 } 482 483 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, 484 struct kvm_sregs *sregs) 485 { 486 return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs); 487 } 488 489 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 490 struct kvm_sregs *sregs) 491 { 492 return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs); 493 } 494 495 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) 496 { 497 int i; 498 499 regs->pc = kvmppc_get_pc(vcpu); 500 regs->cr = kvmppc_get_cr(vcpu); 501 regs->ctr = kvmppc_get_ctr(vcpu); 502 regs->lr = kvmppc_get_lr(vcpu); 503 regs->xer = kvmppc_get_xer(vcpu); 504 regs->msr = kvmppc_get_msr(vcpu); 505 regs->srr0 = kvmppc_get_srr0(vcpu); 506 regs->srr1 = kvmppc_get_srr1(vcpu); 507 regs->pid = vcpu->arch.pid; 508 regs->sprg0 = kvmppc_get_sprg0(vcpu); 509 regs->sprg1 = kvmppc_get_sprg1(vcpu); 510 regs->sprg2 = kvmppc_get_sprg2(vcpu); 511 regs->sprg3 = kvmppc_get_sprg3(vcpu); 512 regs->sprg4 = kvmppc_get_sprg4(vcpu); 513 regs->sprg5 = kvmppc_get_sprg5(vcpu); 514 regs->sprg6 = kvmppc_get_sprg6(vcpu); 515 regs->sprg7 = kvmppc_get_sprg7(vcpu); 516 517 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) 518 regs->gpr[i] = kvmppc_get_gpr(vcpu, i); 519 520 return 0; 521 } 522 523 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) 524 { 525 int i; 526 527 kvmppc_set_pc(vcpu, regs->pc); 528 kvmppc_set_cr(vcpu, regs->cr); 529 kvmppc_set_ctr(vcpu, regs->ctr); 530 kvmppc_set_lr(vcpu, regs->lr); 531 kvmppc_set_xer(vcpu, regs->xer); 532 kvmppc_set_msr(vcpu, regs->msr); 533 kvmppc_set_srr0(vcpu, regs->srr0); 534 kvmppc_set_srr1(vcpu, regs->srr1); 535 kvmppc_set_sprg0(vcpu, regs->sprg0); 536 kvmppc_set_sprg1(vcpu, regs->sprg1); 537 kvmppc_set_sprg2(vcpu, regs->sprg2); 538 kvmppc_set_sprg3(vcpu, regs->sprg3); 539 kvmppc_set_sprg4(vcpu, regs->sprg4); 540 kvmppc_set_sprg5(vcpu, regs->sprg5); 541 kvmppc_set_sprg6(vcpu, regs->sprg6); 542 kvmppc_set_sprg7(vcpu, regs->sprg7); 543 544 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) 545 kvmppc_set_gpr(vcpu, i, regs->gpr[i]); 546 547 return 0; 548 } 549 550 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) 551 { 552 return -ENOTSUPP; 553 } 554 555 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) 556 { 557 return -ENOTSUPP; 558 } 559 560 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, 561 union kvmppc_one_reg *val) 562 { 563 int r = 0; 564 long int i; 565 566 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val); 567 if (r == -EINVAL) { 568 r = 0; 569 switch (id) { 570 case KVM_REG_PPC_DAR: 571 *val = get_reg_val(id, kvmppc_get_dar(vcpu)); 572 break; 573 case KVM_REG_PPC_DSISR: 574 *val = get_reg_val(id, kvmppc_get_dsisr(vcpu)); 575 break; 576 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: 577 i = id - KVM_REG_PPC_FPR0; 578 *val = get_reg_val(id, VCPU_FPR(vcpu, i)); 579 break; 580 case KVM_REG_PPC_FPSCR: 581 *val = get_reg_val(id, vcpu->arch.fp.fpscr); 582 break; 583 #ifdef CONFIG_VSX 584 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: 585 if (cpu_has_feature(CPU_FTR_VSX)) { 586 i = id - KVM_REG_PPC_VSR0; 587 val->vsxval[0] = vcpu->arch.fp.fpr[i][0]; 588 val->vsxval[1] = vcpu->arch.fp.fpr[i][1]; 589 } else { 590 r = -ENXIO; 591 } 592 break; 593 #endif /* CONFIG_VSX */ 594 case KVM_REG_PPC_DEBUG_INST: 595 *val = get_reg_val(id, INS_TW); 596 break; 597 #ifdef CONFIG_KVM_XICS 598 case KVM_REG_PPC_ICP_STATE: 599 if (!vcpu->arch.icp) { 600 r = -ENXIO; 601 break; 602 } 603 *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu)); 604 break; 605 #endif /* CONFIG_KVM_XICS */ 606 case KVM_REG_PPC_FSCR: 607 *val = get_reg_val(id, vcpu->arch.fscr); 608 break; 609 case KVM_REG_PPC_TAR: 610 *val = get_reg_val(id, vcpu->arch.tar); 611 break; 612 case KVM_REG_PPC_EBBHR: 613 *val = get_reg_val(id, vcpu->arch.ebbhr); 614 break; 615 case KVM_REG_PPC_EBBRR: 616 *val = get_reg_val(id, vcpu->arch.ebbrr); 617 break; 618 case KVM_REG_PPC_BESCR: 619 *val = get_reg_val(id, vcpu->arch.bescr); 620 break; 621 case KVM_REG_PPC_IC: 622 *val = get_reg_val(id, vcpu->arch.ic); 623 break; 624 default: 625 r = -EINVAL; 626 break; 627 } 628 } 629 630 return r; 631 } 632 633 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, 634 union kvmppc_one_reg *val) 635 { 636 int r = 0; 637 long int i; 638 639 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val); 640 if (r == -EINVAL) { 641 r = 0; 642 switch (id) { 643 case KVM_REG_PPC_DAR: 644 kvmppc_set_dar(vcpu, set_reg_val(id, *val)); 645 break; 646 case KVM_REG_PPC_DSISR: 647 kvmppc_set_dsisr(vcpu, set_reg_val(id, *val)); 648 break; 649 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: 650 i = id - KVM_REG_PPC_FPR0; 651 VCPU_FPR(vcpu, i) = set_reg_val(id, *val); 652 break; 653 case KVM_REG_PPC_FPSCR: 654 vcpu->arch.fp.fpscr = set_reg_val(id, *val); 655 break; 656 #ifdef CONFIG_VSX 657 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: 658 if (cpu_has_feature(CPU_FTR_VSX)) { 659 i = id - KVM_REG_PPC_VSR0; 660 vcpu->arch.fp.fpr[i][0] = val->vsxval[0]; 661 vcpu->arch.fp.fpr[i][1] = val->vsxval[1]; 662 } else { 663 r = -ENXIO; 664 } 665 break; 666 #endif /* CONFIG_VSX */ 667 #ifdef CONFIG_KVM_XICS 668 case KVM_REG_PPC_ICP_STATE: 669 if (!vcpu->arch.icp) { 670 r = -ENXIO; 671 break; 672 } 673 r = kvmppc_xics_set_icp(vcpu, 674 set_reg_val(id, *val)); 675 break; 676 #endif /* CONFIG_KVM_XICS */ 677 case KVM_REG_PPC_FSCR: 678 vcpu->arch.fscr = set_reg_val(id, *val); 679 break; 680 case KVM_REG_PPC_TAR: 681 vcpu->arch.tar = set_reg_val(id, *val); 682 break; 683 case KVM_REG_PPC_EBBHR: 684 vcpu->arch.ebbhr = set_reg_val(id, *val); 685 break; 686 case KVM_REG_PPC_EBBRR: 687 vcpu->arch.ebbrr = set_reg_val(id, *val); 688 break; 689 case KVM_REG_PPC_BESCR: 690 vcpu->arch.bescr = set_reg_val(id, *val); 691 break; 692 case KVM_REG_PPC_IC: 693 vcpu->arch.ic = set_reg_val(id, *val); 694 break; 695 default: 696 r = -EINVAL; 697 break; 698 } 699 } 700 701 return r; 702 } 703 704 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) 705 { 706 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu); 707 } 708 709 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) 710 { 711 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu); 712 } 713 714 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr) 715 { 716 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr); 717 } 718 EXPORT_SYMBOL_GPL(kvmppc_set_msr); 719 720 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) 721 { 722 return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu); 723 } 724 725 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, 726 struct kvm_translation *tr) 727 { 728 return 0; 729 } 730 731 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, 732 struct kvm_guest_debug *dbg) 733 { 734 vcpu->guest_debug = dbg->control; 735 return 0; 736 } 737 738 void kvmppc_decrementer_func(struct kvm_vcpu *vcpu) 739 { 740 kvmppc_core_queue_dec(vcpu); 741 kvm_vcpu_kick(vcpu); 742 } 743 744 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) 745 { 746 return kvm->arch.kvm_ops->vcpu_create(kvm, id); 747 } 748 749 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) 750 { 751 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu); 752 } 753 754 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu) 755 { 756 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu); 757 } 758 759 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) 760 { 761 return kvm->arch.kvm_ops->get_dirty_log(kvm, log); 762 } 763 764 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, 765 struct kvm_memory_slot *dont) 766 { 767 kvm->arch.kvm_ops->free_memslot(free, dont); 768 } 769 770 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, 771 unsigned long npages) 772 { 773 return kvm->arch.kvm_ops->create_memslot(slot, npages); 774 } 775 776 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot) 777 { 778 kvm->arch.kvm_ops->flush_memslot(kvm, memslot); 779 } 780 781 int kvmppc_core_prepare_memory_region(struct kvm *kvm, 782 struct kvm_memory_slot *memslot, 783 const struct kvm_userspace_memory_region *mem) 784 { 785 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem); 786 } 787 788 void kvmppc_core_commit_memory_region(struct kvm *kvm, 789 const struct kvm_userspace_memory_region *mem, 790 const struct kvm_memory_slot *old, 791 const struct kvm_memory_slot *new) 792 { 793 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new); 794 } 795 796 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva) 797 { 798 return kvm->arch.kvm_ops->unmap_hva(kvm, hva); 799 } 800 EXPORT_SYMBOL_GPL(kvm_unmap_hva); 801 802 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end) 803 { 804 return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end); 805 } 806 807 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end) 808 { 809 return kvm->arch.kvm_ops->age_hva(kvm, start, end); 810 } 811 812 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) 813 { 814 return kvm->arch.kvm_ops->test_age_hva(kvm, hva); 815 } 816 817 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte) 818 { 819 kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte); 820 } 821 822 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu) 823 { 824 vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu); 825 } 826 827 int kvmppc_core_init_vm(struct kvm *kvm) 828 { 829 830 #ifdef CONFIG_PPC64 831 INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables); 832 INIT_LIST_HEAD(&kvm->arch.rtas_tokens); 833 #endif 834 835 return kvm->arch.kvm_ops->init_vm(kvm); 836 } 837 838 void kvmppc_core_destroy_vm(struct kvm *kvm) 839 { 840 kvm->arch.kvm_ops->destroy_vm(kvm); 841 842 #ifdef CONFIG_PPC64 843 kvmppc_rtas_tokens_free(kvm); 844 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables)); 845 #endif 846 } 847 848 int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu) 849 { 850 unsigned long size = kvmppc_get_gpr(vcpu, 4); 851 unsigned long addr = kvmppc_get_gpr(vcpu, 5); 852 u64 buf; 853 int srcu_idx; 854 int ret; 855 856 if (!is_power_of_2(size) || (size > sizeof(buf))) 857 return H_TOO_HARD; 858 859 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); 860 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf); 861 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx); 862 if (ret != 0) 863 return H_TOO_HARD; 864 865 switch (size) { 866 case 1: 867 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf); 868 break; 869 870 case 2: 871 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf)); 872 break; 873 874 case 4: 875 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf)); 876 break; 877 878 case 8: 879 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf)); 880 break; 881 882 default: 883 BUG(); 884 } 885 886 return H_SUCCESS; 887 } 888 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load); 889 890 int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu) 891 { 892 unsigned long size = kvmppc_get_gpr(vcpu, 4); 893 unsigned long addr = kvmppc_get_gpr(vcpu, 5); 894 unsigned long val = kvmppc_get_gpr(vcpu, 6); 895 u64 buf; 896 int srcu_idx; 897 int ret; 898 899 switch (size) { 900 case 1: 901 *(u8 *)&buf = val; 902 break; 903 904 case 2: 905 *(__be16 *)&buf = cpu_to_be16(val); 906 break; 907 908 case 4: 909 *(__be32 *)&buf = cpu_to_be32(val); 910 break; 911 912 case 8: 913 *(__be64 *)&buf = cpu_to_be64(val); 914 break; 915 916 default: 917 return H_TOO_HARD; 918 } 919 920 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); 921 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf); 922 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx); 923 if (ret != 0) 924 return H_TOO_HARD; 925 926 return H_SUCCESS; 927 } 928 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store); 929 930 int kvmppc_core_check_processor_compat(void) 931 { 932 /* 933 * We always return 0 for book3s. We check 934 * for compatibility while loading the HV 935 * or PR module 936 */ 937 return 0; 938 } 939 940 int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall) 941 { 942 return kvm->arch.kvm_ops->hcall_implemented(hcall); 943 } 944 945 static int kvmppc_book3s_init(void) 946 { 947 int r; 948 949 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); 950 if (r) 951 return r; 952 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 953 r = kvmppc_book3s_init_pr(); 954 #endif 955 return r; 956 957 } 958 959 static void kvmppc_book3s_exit(void) 960 { 961 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 962 kvmppc_book3s_exit_pr(); 963 #endif 964 kvm_exit(); 965 } 966 967 module_init(kvmppc_book3s_init); 968 module_exit(kvmppc_book3s_exit); 969 970 /* On 32bit this is our one and only kernel module */ 971 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 972 MODULE_ALIAS_MISCDEV(KVM_MINOR); 973 MODULE_ALIAS("devname:kvm"); 974 #endif 975