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