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 static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, 244 unsigned int priority) 245 { 246 int deliver = 1; 247 int vec = 0; 248 bool crit = kvmppc_critical_section(vcpu); 249 250 switch (priority) { 251 case BOOK3S_IRQPRIO_DECREMENTER: 252 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; 253 vec = BOOK3S_INTERRUPT_DECREMENTER; 254 break; 255 case BOOK3S_IRQPRIO_EXTERNAL: 256 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: 257 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; 258 vec = BOOK3S_INTERRUPT_EXTERNAL; 259 break; 260 case BOOK3S_IRQPRIO_SYSTEM_RESET: 261 vec = BOOK3S_INTERRUPT_SYSTEM_RESET; 262 break; 263 case BOOK3S_IRQPRIO_MACHINE_CHECK: 264 vec = BOOK3S_INTERRUPT_MACHINE_CHECK; 265 break; 266 case BOOK3S_IRQPRIO_DATA_STORAGE: 267 vec = BOOK3S_INTERRUPT_DATA_STORAGE; 268 break; 269 case BOOK3S_IRQPRIO_INST_STORAGE: 270 vec = BOOK3S_INTERRUPT_INST_STORAGE; 271 break; 272 case BOOK3S_IRQPRIO_DATA_SEGMENT: 273 vec = BOOK3S_INTERRUPT_DATA_SEGMENT; 274 break; 275 case BOOK3S_IRQPRIO_INST_SEGMENT: 276 vec = BOOK3S_INTERRUPT_INST_SEGMENT; 277 break; 278 case BOOK3S_IRQPRIO_ALIGNMENT: 279 vec = BOOK3S_INTERRUPT_ALIGNMENT; 280 break; 281 case BOOK3S_IRQPRIO_PROGRAM: 282 vec = BOOK3S_INTERRUPT_PROGRAM; 283 break; 284 case BOOK3S_IRQPRIO_VSX: 285 vec = BOOK3S_INTERRUPT_VSX; 286 break; 287 case BOOK3S_IRQPRIO_ALTIVEC: 288 vec = BOOK3S_INTERRUPT_ALTIVEC; 289 break; 290 case BOOK3S_IRQPRIO_FP_UNAVAIL: 291 vec = BOOK3S_INTERRUPT_FP_UNAVAIL; 292 break; 293 case BOOK3S_IRQPRIO_SYSCALL: 294 vec = BOOK3S_INTERRUPT_SYSCALL; 295 break; 296 case BOOK3S_IRQPRIO_DEBUG: 297 vec = BOOK3S_INTERRUPT_TRACE; 298 break; 299 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR: 300 vec = BOOK3S_INTERRUPT_PERFMON; 301 break; 302 case BOOK3S_IRQPRIO_FAC_UNAVAIL: 303 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL; 304 break; 305 default: 306 deliver = 0; 307 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority); 308 break; 309 } 310 311 #if 0 312 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver); 313 #endif 314 315 if (deliver) 316 kvmppc_inject_interrupt(vcpu, vec, 0); 317 318 return deliver; 319 } 320 321 /* 322 * This function determines if an irqprio should be cleared once issued. 323 */ 324 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority) 325 { 326 switch (priority) { 327 case BOOK3S_IRQPRIO_DECREMENTER: 328 /* DEC interrupts get cleared by mtdec */ 329 return false; 330 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: 331 /* External interrupts get cleared by userspace */ 332 return false; 333 } 334 335 return true; 336 } 337 338 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu) 339 { 340 unsigned long *pending = &vcpu->arch.pending_exceptions; 341 unsigned long old_pending = vcpu->arch.pending_exceptions; 342 unsigned int priority; 343 344 #ifdef EXIT_DEBUG 345 if (vcpu->arch.pending_exceptions) 346 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions); 347 #endif 348 priority = __ffs(*pending); 349 while (priority < BOOK3S_IRQPRIO_MAX) { 350 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) && 351 clear_irqprio(vcpu, priority)) { 352 clear_bit(priority, &vcpu->arch.pending_exceptions); 353 break; 354 } 355 356 priority = find_next_bit(pending, 357 BITS_PER_BYTE * sizeof(*pending), 358 priority + 1); 359 } 360 361 /* Tell the guest about our interrupt status */ 362 kvmppc_update_int_pending(vcpu, *pending, old_pending); 363 364 return 0; 365 } 366 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter); 367 368 pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing, 369 bool *writable) 370 { 371 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM; 372 gfn_t gfn = gpa >> PAGE_SHIFT; 373 374 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) 375 mp_pa = (uint32_t)mp_pa; 376 377 /* Magic page override */ 378 gpa &= ~0xFFFULL; 379 if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) { 380 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK; 381 pfn_t pfn; 382 383 pfn = (pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT; 384 get_page(pfn_to_page(pfn)); 385 if (writable) 386 *writable = true; 387 return pfn; 388 } 389 390 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable); 391 } 392 EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn); 393 394 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid, 395 enum xlate_readwrite xlrw, struct kvmppc_pte *pte) 396 { 397 bool data = (xlid == XLATE_DATA); 398 bool iswrite = (xlrw == XLATE_WRITE); 399 int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR)); 400 int r; 401 402 if (relocated) { 403 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite); 404 } else { 405 pte->eaddr = eaddr; 406 pte->raddr = eaddr & KVM_PAM; 407 pte->vpage = VSID_REAL | eaddr >> 12; 408 pte->may_read = true; 409 pte->may_write = true; 410 pte->may_execute = true; 411 r = 0; 412 413 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR && 414 !data) { 415 if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) && 416 ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)) 417 pte->raddr &= ~SPLIT_HACK_MASK; 418 } 419 } 420 421 return r; 422 } 423 424 int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type, 425 u32 *inst) 426 { 427 ulong pc = kvmppc_get_pc(vcpu); 428 int r; 429 430 if (type == INST_SC) 431 pc -= 4; 432 433 r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false); 434 if (r == EMULATE_DONE) 435 return r; 436 else 437 return EMULATE_AGAIN; 438 } 439 EXPORT_SYMBOL_GPL(kvmppc_load_last_inst); 440 441 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) 442 { 443 return 0; 444 } 445 446 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu) 447 { 448 return 0; 449 } 450 451 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu) 452 { 453 } 454 455 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, 456 struct kvm_sregs *sregs) 457 { 458 return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs); 459 } 460 461 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 462 struct kvm_sregs *sregs) 463 { 464 return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs); 465 } 466 467 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) 468 { 469 int i; 470 471 regs->pc = kvmppc_get_pc(vcpu); 472 regs->cr = kvmppc_get_cr(vcpu); 473 regs->ctr = kvmppc_get_ctr(vcpu); 474 regs->lr = kvmppc_get_lr(vcpu); 475 regs->xer = kvmppc_get_xer(vcpu); 476 regs->msr = kvmppc_get_msr(vcpu); 477 regs->srr0 = kvmppc_get_srr0(vcpu); 478 regs->srr1 = kvmppc_get_srr1(vcpu); 479 regs->pid = vcpu->arch.pid; 480 regs->sprg0 = kvmppc_get_sprg0(vcpu); 481 regs->sprg1 = kvmppc_get_sprg1(vcpu); 482 regs->sprg2 = kvmppc_get_sprg2(vcpu); 483 regs->sprg3 = kvmppc_get_sprg3(vcpu); 484 regs->sprg4 = kvmppc_get_sprg4(vcpu); 485 regs->sprg5 = kvmppc_get_sprg5(vcpu); 486 regs->sprg6 = kvmppc_get_sprg6(vcpu); 487 regs->sprg7 = kvmppc_get_sprg7(vcpu); 488 489 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) 490 regs->gpr[i] = kvmppc_get_gpr(vcpu, i); 491 492 return 0; 493 } 494 495 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) 496 { 497 int i; 498 499 kvmppc_set_pc(vcpu, regs->pc); 500 kvmppc_set_cr(vcpu, regs->cr); 501 kvmppc_set_ctr(vcpu, regs->ctr); 502 kvmppc_set_lr(vcpu, regs->lr); 503 kvmppc_set_xer(vcpu, regs->xer); 504 kvmppc_set_msr(vcpu, regs->msr); 505 kvmppc_set_srr0(vcpu, regs->srr0); 506 kvmppc_set_srr1(vcpu, regs->srr1); 507 kvmppc_set_sprg0(vcpu, regs->sprg0); 508 kvmppc_set_sprg1(vcpu, regs->sprg1); 509 kvmppc_set_sprg2(vcpu, regs->sprg2); 510 kvmppc_set_sprg3(vcpu, regs->sprg3); 511 kvmppc_set_sprg4(vcpu, regs->sprg4); 512 kvmppc_set_sprg5(vcpu, regs->sprg5); 513 kvmppc_set_sprg6(vcpu, regs->sprg6); 514 kvmppc_set_sprg7(vcpu, regs->sprg7); 515 516 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) 517 kvmppc_set_gpr(vcpu, i, regs->gpr[i]); 518 519 return 0; 520 } 521 522 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) 523 { 524 return -ENOTSUPP; 525 } 526 527 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) 528 { 529 return -ENOTSUPP; 530 } 531 532 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, 533 union kvmppc_one_reg *val) 534 { 535 int r = 0; 536 long int i; 537 538 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val); 539 if (r == -EINVAL) { 540 r = 0; 541 switch (id) { 542 case KVM_REG_PPC_DAR: 543 *val = get_reg_val(id, kvmppc_get_dar(vcpu)); 544 break; 545 case KVM_REG_PPC_DSISR: 546 *val = get_reg_val(id, kvmppc_get_dsisr(vcpu)); 547 break; 548 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: 549 i = id - KVM_REG_PPC_FPR0; 550 *val = get_reg_val(id, VCPU_FPR(vcpu, i)); 551 break; 552 case KVM_REG_PPC_FPSCR: 553 *val = get_reg_val(id, vcpu->arch.fp.fpscr); 554 break; 555 #ifdef CONFIG_VSX 556 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: 557 if (cpu_has_feature(CPU_FTR_VSX)) { 558 i = id - KVM_REG_PPC_VSR0; 559 val->vsxval[0] = vcpu->arch.fp.fpr[i][0]; 560 val->vsxval[1] = vcpu->arch.fp.fpr[i][1]; 561 } else { 562 r = -ENXIO; 563 } 564 break; 565 #endif /* CONFIG_VSX */ 566 case KVM_REG_PPC_DEBUG_INST: 567 *val = get_reg_val(id, INS_TW); 568 break; 569 #ifdef CONFIG_KVM_XICS 570 case KVM_REG_PPC_ICP_STATE: 571 if (!vcpu->arch.icp) { 572 r = -ENXIO; 573 break; 574 } 575 *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu)); 576 break; 577 #endif /* CONFIG_KVM_XICS */ 578 case KVM_REG_PPC_FSCR: 579 *val = get_reg_val(id, vcpu->arch.fscr); 580 break; 581 case KVM_REG_PPC_TAR: 582 *val = get_reg_val(id, vcpu->arch.tar); 583 break; 584 case KVM_REG_PPC_EBBHR: 585 *val = get_reg_val(id, vcpu->arch.ebbhr); 586 break; 587 case KVM_REG_PPC_EBBRR: 588 *val = get_reg_val(id, vcpu->arch.ebbrr); 589 break; 590 case KVM_REG_PPC_BESCR: 591 *val = get_reg_val(id, vcpu->arch.bescr); 592 break; 593 case KVM_REG_PPC_VTB: 594 *val = get_reg_val(id, vcpu->arch.vtb); 595 break; 596 case KVM_REG_PPC_IC: 597 *val = get_reg_val(id, vcpu->arch.ic); 598 break; 599 default: 600 r = -EINVAL; 601 break; 602 } 603 } 604 605 return r; 606 } 607 608 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, 609 union kvmppc_one_reg *val) 610 { 611 int r = 0; 612 long int i; 613 614 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val); 615 if (r == -EINVAL) { 616 r = 0; 617 switch (id) { 618 case KVM_REG_PPC_DAR: 619 kvmppc_set_dar(vcpu, set_reg_val(id, *val)); 620 break; 621 case KVM_REG_PPC_DSISR: 622 kvmppc_set_dsisr(vcpu, set_reg_val(id, *val)); 623 break; 624 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: 625 i = id - KVM_REG_PPC_FPR0; 626 VCPU_FPR(vcpu, i) = set_reg_val(id, *val); 627 break; 628 case KVM_REG_PPC_FPSCR: 629 vcpu->arch.fp.fpscr = set_reg_val(id, *val); 630 break; 631 #ifdef CONFIG_VSX 632 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: 633 if (cpu_has_feature(CPU_FTR_VSX)) { 634 i = id - KVM_REG_PPC_VSR0; 635 vcpu->arch.fp.fpr[i][0] = val->vsxval[0]; 636 vcpu->arch.fp.fpr[i][1] = val->vsxval[1]; 637 } else { 638 r = -ENXIO; 639 } 640 break; 641 #endif /* CONFIG_VSX */ 642 #ifdef CONFIG_KVM_XICS 643 case KVM_REG_PPC_ICP_STATE: 644 if (!vcpu->arch.icp) { 645 r = -ENXIO; 646 break; 647 } 648 r = kvmppc_xics_set_icp(vcpu, 649 set_reg_val(id, *val)); 650 break; 651 #endif /* CONFIG_KVM_XICS */ 652 case KVM_REG_PPC_FSCR: 653 vcpu->arch.fscr = set_reg_val(id, *val); 654 break; 655 case KVM_REG_PPC_TAR: 656 vcpu->arch.tar = set_reg_val(id, *val); 657 break; 658 case KVM_REG_PPC_EBBHR: 659 vcpu->arch.ebbhr = set_reg_val(id, *val); 660 break; 661 case KVM_REG_PPC_EBBRR: 662 vcpu->arch.ebbrr = set_reg_val(id, *val); 663 break; 664 case KVM_REG_PPC_BESCR: 665 vcpu->arch.bescr = set_reg_val(id, *val); 666 break; 667 case KVM_REG_PPC_VTB: 668 vcpu->arch.vtb = set_reg_val(id, *val); 669 break; 670 case KVM_REG_PPC_IC: 671 vcpu->arch.ic = set_reg_val(id, *val); 672 break; 673 default: 674 r = -EINVAL; 675 break; 676 } 677 } 678 679 return r; 680 } 681 682 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) 683 { 684 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu); 685 } 686 687 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) 688 { 689 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu); 690 } 691 692 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr) 693 { 694 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr); 695 } 696 EXPORT_SYMBOL_GPL(kvmppc_set_msr); 697 698 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) 699 { 700 return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu); 701 } 702 703 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, 704 struct kvm_translation *tr) 705 { 706 return 0; 707 } 708 709 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, 710 struct kvm_guest_debug *dbg) 711 { 712 vcpu->guest_debug = dbg->control; 713 return 0; 714 } 715 716 void kvmppc_decrementer_func(struct kvm_vcpu *vcpu) 717 { 718 kvmppc_core_queue_dec(vcpu); 719 kvm_vcpu_kick(vcpu); 720 } 721 722 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) 723 { 724 return kvm->arch.kvm_ops->vcpu_create(kvm, id); 725 } 726 727 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) 728 { 729 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu); 730 } 731 732 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu) 733 { 734 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu); 735 } 736 737 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) 738 { 739 return kvm->arch.kvm_ops->get_dirty_log(kvm, log); 740 } 741 742 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, 743 struct kvm_memory_slot *dont) 744 { 745 kvm->arch.kvm_ops->free_memslot(free, dont); 746 } 747 748 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, 749 unsigned long npages) 750 { 751 return kvm->arch.kvm_ops->create_memslot(slot, npages); 752 } 753 754 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot) 755 { 756 kvm->arch.kvm_ops->flush_memslot(kvm, memslot); 757 } 758 759 int kvmppc_core_prepare_memory_region(struct kvm *kvm, 760 struct kvm_memory_slot *memslot, 761 const struct kvm_userspace_memory_region *mem) 762 { 763 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem); 764 } 765 766 void kvmppc_core_commit_memory_region(struct kvm *kvm, 767 const struct kvm_userspace_memory_region *mem, 768 const struct kvm_memory_slot *old, 769 const struct kvm_memory_slot *new) 770 { 771 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new); 772 } 773 774 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva) 775 { 776 return kvm->arch.kvm_ops->unmap_hva(kvm, hva); 777 } 778 EXPORT_SYMBOL_GPL(kvm_unmap_hva); 779 780 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end) 781 { 782 return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end); 783 } 784 785 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end) 786 { 787 return kvm->arch.kvm_ops->age_hva(kvm, start, end); 788 } 789 790 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) 791 { 792 return kvm->arch.kvm_ops->test_age_hva(kvm, hva); 793 } 794 795 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte) 796 { 797 kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte); 798 } 799 800 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu) 801 { 802 vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu); 803 } 804 805 int kvmppc_core_init_vm(struct kvm *kvm) 806 { 807 808 #ifdef CONFIG_PPC64 809 INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables); 810 INIT_LIST_HEAD(&kvm->arch.rtas_tokens); 811 #endif 812 813 return kvm->arch.kvm_ops->init_vm(kvm); 814 } 815 816 void kvmppc_core_destroy_vm(struct kvm *kvm) 817 { 818 kvm->arch.kvm_ops->destroy_vm(kvm); 819 820 #ifdef CONFIG_PPC64 821 kvmppc_rtas_tokens_free(kvm); 822 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables)); 823 #endif 824 } 825 826 int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu) 827 { 828 unsigned long size = kvmppc_get_gpr(vcpu, 4); 829 unsigned long addr = kvmppc_get_gpr(vcpu, 5); 830 u64 buf; 831 int ret; 832 833 if (!is_power_of_2(size) || (size > sizeof(buf))) 834 return H_TOO_HARD; 835 836 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf); 837 if (ret != 0) 838 return H_TOO_HARD; 839 840 switch (size) { 841 case 1: 842 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf); 843 break; 844 845 case 2: 846 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf)); 847 break; 848 849 case 4: 850 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf)); 851 break; 852 853 case 8: 854 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf)); 855 break; 856 857 default: 858 BUG(); 859 } 860 861 return H_SUCCESS; 862 } 863 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load); 864 865 int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu) 866 { 867 unsigned long size = kvmppc_get_gpr(vcpu, 4); 868 unsigned long addr = kvmppc_get_gpr(vcpu, 5); 869 unsigned long val = kvmppc_get_gpr(vcpu, 6); 870 u64 buf; 871 int ret; 872 873 switch (size) { 874 case 1: 875 *(u8 *)&buf = val; 876 break; 877 878 case 2: 879 *(__be16 *)&buf = cpu_to_be16(val); 880 break; 881 882 case 4: 883 *(__be32 *)&buf = cpu_to_be32(val); 884 break; 885 886 case 8: 887 *(__be64 *)&buf = cpu_to_be64(val); 888 break; 889 890 default: 891 return H_TOO_HARD; 892 } 893 894 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf); 895 if (ret != 0) 896 return H_TOO_HARD; 897 898 return H_SUCCESS; 899 } 900 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store); 901 902 int kvmppc_core_check_processor_compat(void) 903 { 904 /* 905 * We always return 0 for book3s. We check 906 * for compatability while loading the HV 907 * or PR module 908 */ 909 return 0; 910 } 911 912 int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall) 913 { 914 return kvm->arch.kvm_ops->hcall_implemented(hcall); 915 } 916 917 static int kvmppc_book3s_init(void) 918 { 919 int r; 920 921 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); 922 if (r) 923 return r; 924 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 925 r = kvmppc_book3s_init_pr(); 926 #endif 927 return r; 928 929 } 930 931 static void kvmppc_book3s_exit(void) 932 { 933 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 934 kvmppc_book3s_exit_pr(); 935 #endif 936 kvm_exit(); 937 } 938 939 module_init(kvmppc_book3s_init); 940 module_exit(kvmppc_book3s_exit); 941 942 /* On 32bit this is our one and only kernel module */ 943 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 944 MODULE_ALIAS_MISCDEV(KVM_MINOR); 945 MODULE_ALIAS("devname:kvm"); 946 #endif 947