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