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