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