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 #include <linux/gfp.h> 24 #include <linux/sched.h> 25 #include <linux/vmalloc.h> 26 #include <linux/highmem.h> 27 28 #include <asm/reg.h> 29 #include <asm/cputable.h> 30 #include <asm/cacheflush.h> 31 #include <asm/tlbflush.h> 32 #include <linux/uaccess.h> 33 #include <asm/io.h> 34 #include <asm/kvm_ppc.h> 35 #include <asm/kvm_book3s.h> 36 #include <asm/mmu_context.h> 37 #include <asm/page.h> 38 #include <asm/xive.h> 39 40 #include "book3s.h" 41 #include "trace.h" 42 43 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU 44 45 /* #define EXIT_DEBUG */ 46 47 struct kvm_stats_debugfs_item debugfs_entries[] = { 48 { "exits", VCPU_STAT(sum_exits) }, 49 { "mmio", VCPU_STAT(mmio_exits) }, 50 { "sig", VCPU_STAT(signal_exits) }, 51 { "sysc", VCPU_STAT(syscall_exits) }, 52 { "inst_emu", VCPU_STAT(emulated_inst_exits) }, 53 { "dec", VCPU_STAT(dec_exits) }, 54 { "ext_intr", VCPU_STAT(ext_intr_exits) }, 55 { "queue_intr", VCPU_STAT(queue_intr) }, 56 { "halt_poll_success_ns", VCPU_STAT(halt_poll_success_ns) }, 57 { "halt_poll_fail_ns", VCPU_STAT(halt_poll_fail_ns) }, 58 { "halt_wait_ns", VCPU_STAT(halt_wait_ns) }, 59 { "halt_successful_poll", VCPU_STAT(halt_successful_poll), }, 60 { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll), }, 61 { "halt_successful_wait", VCPU_STAT(halt_successful_wait) }, 62 { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) }, 63 { "halt_wakeup", VCPU_STAT(halt_wakeup) }, 64 { "pf_storage", VCPU_STAT(pf_storage) }, 65 { "sp_storage", VCPU_STAT(sp_storage) }, 66 { "pf_instruc", VCPU_STAT(pf_instruc) }, 67 { "sp_instruc", VCPU_STAT(sp_instruc) }, 68 { "ld", VCPU_STAT(ld) }, 69 { "ld_slow", VCPU_STAT(ld_slow) }, 70 { "st", VCPU_STAT(st) }, 71 { "st_slow", VCPU_STAT(st_slow) }, 72 { "pthru_all", VCPU_STAT(pthru_all) }, 73 { "pthru_host", VCPU_STAT(pthru_host) }, 74 { "pthru_bad_aff", VCPU_STAT(pthru_bad_aff) }, 75 { NULL } 76 }; 77 78 void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu) 79 { 80 if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) { 81 ulong pc = kvmppc_get_pc(vcpu); 82 if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS) 83 kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK); 84 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK; 85 } 86 } 87 EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real); 88 89 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) 90 { 91 if (!is_kvmppc_hv_enabled(vcpu->kvm)) 92 return to_book3s(vcpu)->hior; 93 return 0; 94 } 95 96 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, 97 unsigned long pending_now, unsigned long old_pending) 98 { 99 if (is_kvmppc_hv_enabled(vcpu->kvm)) 100 return; 101 if (pending_now) 102 kvmppc_set_int_pending(vcpu, 1); 103 else if (old_pending) 104 kvmppc_set_int_pending(vcpu, 0); 105 } 106 107 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) 108 { 109 ulong crit_raw; 110 ulong crit_r1; 111 bool crit; 112 113 if (is_kvmppc_hv_enabled(vcpu->kvm)) 114 return false; 115 116 crit_raw = kvmppc_get_critical(vcpu); 117 crit_r1 = kvmppc_get_gpr(vcpu, 1); 118 119 /* Truncate crit indicators in 32 bit mode */ 120 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) { 121 crit_raw &= 0xffffffff; 122 crit_r1 &= 0xffffffff; 123 } 124 125 /* Critical section when crit == r1 */ 126 crit = (crit_raw == crit_r1); 127 /* ... and we're in supervisor mode */ 128 crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR); 129 130 return crit; 131 } 132 133 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags) 134 { 135 kvmppc_unfixup_split_real(vcpu); 136 kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu)); 137 kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags); 138 kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec); 139 vcpu->arch.mmu.reset_msr(vcpu); 140 } 141 142 static int kvmppc_book3s_vec2irqprio(unsigned int vec) 143 { 144 unsigned int prio; 145 146 switch (vec) { 147 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break; 148 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break; 149 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break; 150 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break; 151 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break; 152 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break; 153 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break; 154 case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break; 155 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break; 156 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break; 157 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break; 158 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break; 159 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break; 160 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break; 161 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break; 162 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break; 163 case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; break; 164 default: prio = BOOK3S_IRQPRIO_MAX; break; 165 } 166 167 return prio; 168 } 169 170 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu, 171 unsigned int vec) 172 { 173 unsigned long old_pending = vcpu->arch.pending_exceptions; 174 175 clear_bit(kvmppc_book3s_vec2irqprio(vec), 176 &vcpu->arch.pending_exceptions); 177 178 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions, 179 old_pending); 180 } 181 182 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec) 183 { 184 vcpu->stat.queue_intr++; 185 186 set_bit(kvmppc_book3s_vec2irqprio(vec), 187 &vcpu->arch.pending_exceptions); 188 #ifdef EXIT_DEBUG 189 printk(KERN_INFO "Queueing interrupt %x\n", vec); 190 #endif 191 } 192 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio); 193 194 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags) 195 { 196 /* might as well deliver this straight away */ 197 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags); 198 } 199 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program); 200 201 void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu) 202 { 203 /* might as well deliver this straight away */ 204 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, 0); 205 } 206 207 void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu) 208 { 209 /* might as well deliver this straight away */ 210 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_ALTIVEC, 0); 211 } 212 213 void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu) 214 { 215 /* might as well deliver this straight away */ 216 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_VSX, 0); 217 } 218 219 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu) 220 { 221 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER); 222 } 223 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec); 224 225 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu) 226 { 227 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions); 228 } 229 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec); 230 231 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu) 232 { 233 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER); 234 } 235 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec); 236 237 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, 238 struct kvm_interrupt *irq) 239 { 240 unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL; 241 242 if (irq->irq == KVM_INTERRUPT_SET_LEVEL) 243 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL; 244 245 kvmppc_book3s_queue_irqprio(vcpu, vec); 246 } 247 248 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu) 249 { 250 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL); 251 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL); 252 } 253 254 void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar, 255 ulong flags) 256 { 257 kvmppc_set_dar(vcpu, dar); 258 kvmppc_set_dsisr(vcpu, flags); 259 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE); 260 } 261 EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage); /* used by kvm_hv */ 262 263 void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags) 264 { 265 u64 msr = kvmppc_get_msr(vcpu); 266 msr &= ~(SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT); 267 msr |= flags & (SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT); 268 kvmppc_set_msr_fast(vcpu, msr); 269 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE); 270 } 271 272 static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, 273 unsigned int priority) 274 { 275 int deliver = 1; 276 int vec = 0; 277 bool crit = kvmppc_critical_section(vcpu); 278 279 switch (priority) { 280 case BOOK3S_IRQPRIO_DECREMENTER: 281 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; 282 vec = BOOK3S_INTERRUPT_DECREMENTER; 283 break; 284 case BOOK3S_IRQPRIO_EXTERNAL: 285 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: 286 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; 287 vec = BOOK3S_INTERRUPT_EXTERNAL; 288 break; 289 case BOOK3S_IRQPRIO_SYSTEM_RESET: 290 vec = BOOK3S_INTERRUPT_SYSTEM_RESET; 291 break; 292 case BOOK3S_IRQPRIO_MACHINE_CHECK: 293 vec = BOOK3S_INTERRUPT_MACHINE_CHECK; 294 break; 295 case BOOK3S_IRQPRIO_DATA_STORAGE: 296 vec = BOOK3S_INTERRUPT_DATA_STORAGE; 297 break; 298 case BOOK3S_IRQPRIO_INST_STORAGE: 299 vec = BOOK3S_INTERRUPT_INST_STORAGE; 300 break; 301 case BOOK3S_IRQPRIO_DATA_SEGMENT: 302 vec = BOOK3S_INTERRUPT_DATA_SEGMENT; 303 break; 304 case BOOK3S_IRQPRIO_INST_SEGMENT: 305 vec = BOOK3S_INTERRUPT_INST_SEGMENT; 306 break; 307 case BOOK3S_IRQPRIO_ALIGNMENT: 308 vec = BOOK3S_INTERRUPT_ALIGNMENT; 309 break; 310 case BOOK3S_IRQPRIO_PROGRAM: 311 vec = BOOK3S_INTERRUPT_PROGRAM; 312 break; 313 case BOOK3S_IRQPRIO_VSX: 314 vec = BOOK3S_INTERRUPT_VSX; 315 break; 316 case BOOK3S_IRQPRIO_ALTIVEC: 317 vec = BOOK3S_INTERRUPT_ALTIVEC; 318 break; 319 case BOOK3S_IRQPRIO_FP_UNAVAIL: 320 vec = BOOK3S_INTERRUPT_FP_UNAVAIL; 321 break; 322 case BOOK3S_IRQPRIO_SYSCALL: 323 vec = BOOK3S_INTERRUPT_SYSCALL; 324 break; 325 case BOOK3S_IRQPRIO_DEBUG: 326 vec = BOOK3S_INTERRUPT_TRACE; 327 break; 328 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR: 329 vec = BOOK3S_INTERRUPT_PERFMON; 330 break; 331 case BOOK3S_IRQPRIO_FAC_UNAVAIL: 332 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL; 333 break; 334 default: 335 deliver = 0; 336 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority); 337 break; 338 } 339 340 #if 0 341 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver); 342 #endif 343 344 if (deliver) 345 kvmppc_inject_interrupt(vcpu, vec, 0); 346 347 return deliver; 348 } 349 350 /* 351 * This function determines if an irqprio should be cleared once issued. 352 */ 353 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority) 354 { 355 switch (priority) { 356 case BOOK3S_IRQPRIO_DECREMENTER: 357 /* DEC interrupts get cleared by mtdec */ 358 return false; 359 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: 360 /* External interrupts get cleared by userspace */ 361 return false; 362 } 363 364 return true; 365 } 366 367 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu) 368 { 369 unsigned long *pending = &vcpu->arch.pending_exceptions; 370 unsigned long old_pending = vcpu->arch.pending_exceptions; 371 unsigned int priority; 372 373 #ifdef EXIT_DEBUG 374 if (vcpu->arch.pending_exceptions) 375 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions); 376 #endif 377 priority = __ffs(*pending); 378 while (priority < BOOK3S_IRQPRIO_MAX) { 379 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) && 380 clear_irqprio(vcpu, priority)) { 381 clear_bit(priority, &vcpu->arch.pending_exceptions); 382 break; 383 } 384 385 priority = find_next_bit(pending, 386 BITS_PER_BYTE * sizeof(*pending), 387 priority + 1); 388 } 389 390 /* Tell the guest about our interrupt status */ 391 kvmppc_update_int_pending(vcpu, *pending, old_pending); 392 393 return 0; 394 } 395 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter); 396 397 kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing, 398 bool *writable) 399 { 400 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM; 401 gfn_t gfn = gpa >> PAGE_SHIFT; 402 403 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) 404 mp_pa = (uint32_t)mp_pa; 405 406 /* Magic page override */ 407 gpa &= ~0xFFFULL; 408 if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) { 409 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK; 410 kvm_pfn_t pfn; 411 412 pfn = (kvm_pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT; 413 get_page(pfn_to_page(pfn)); 414 if (writable) 415 *writable = true; 416 return pfn; 417 } 418 419 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable); 420 } 421 EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn); 422 423 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid, 424 enum xlate_readwrite xlrw, struct kvmppc_pte *pte) 425 { 426 bool data = (xlid == XLATE_DATA); 427 bool iswrite = (xlrw == XLATE_WRITE); 428 int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR)); 429 int r; 430 431 if (relocated) { 432 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite); 433 } else { 434 pte->eaddr = eaddr; 435 pte->raddr = eaddr & KVM_PAM; 436 pte->vpage = VSID_REAL | eaddr >> 12; 437 pte->may_read = true; 438 pte->may_write = true; 439 pte->may_execute = true; 440 r = 0; 441 442 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR && 443 !data) { 444 if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) && 445 ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)) 446 pte->raddr &= ~SPLIT_HACK_MASK; 447 } 448 } 449 450 return r; 451 } 452 453 int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type, 454 u32 *inst) 455 { 456 ulong pc = kvmppc_get_pc(vcpu); 457 int r; 458 459 if (type == INST_SC) 460 pc -= 4; 461 462 r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false); 463 if (r == EMULATE_DONE) 464 return r; 465 else 466 return EMULATE_AGAIN; 467 } 468 EXPORT_SYMBOL_GPL(kvmppc_load_last_inst); 469 470 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) 471 { 472 return 0; 473 } 474 475 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu) 476 { 477 return 0; 478 } 479 480 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu) 481 { 482 } 483 484 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, 485 struct kvm_sregs *sregs) 486 { 487 return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs); 488 } 489 490 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, 491 struct kvm_sregs *sregs) 492 { 493 return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs); 494 } 495 496 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) 497 { 498 int i; 499 500 vcpu_load(vcpu); 501 502 regs->pc = kvmppc_get_pc(vcpu); 503 regs->cr = kvmppc_get_cr(vcpu); 504 regs->ctr = kvmppc_get_ctr(vcpu); 505 regs->lr = kvmppc_get_lr(vcpu); 506 regs->xer = kvmppc_get_xer(vcpu); 507 regs->msr = kvmppc_get_msr(vcpu); 508 regs->srr0 = kvmppc_get_srr0(vcpu); 509 regs->srr1 = kvmppc_get_srr1(vcpu); 510 regs->pid = vcpu->arch.pid; 511 regs->sprg0 = kvmppc_get_sprg0(vcpu); 512 regs->sprg1 = kvmppc_get_sprg1(vcpu); 513 regs->sprg2 = kvmppc_get_sprg2(vcpu); 514 regs->sprg3 = kvmppc_get_sprg3(vcpu); 515 regs->sprg4 = kvmppc_get_sprg4(vcpu); 516 regs->sprg5 = kvmppc_get_sprg5(vcpu); 517 regs->sprg6 = kvmppc_get_sprg6(vcpu); 518 regs->sprg7 = kvmppc_get_sprg7(vcpu); 519 520 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) 521 regs->gpr[i] = kvmppc_get_gpr(vcpu, i); 522 523 vcpu_put(vcpu); 524 return 0; 525 } 526 527 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) 528 { 529 int i; 530 531 vcpu_load(vcpu); 532 533 kvmppc_set_pc(vcpu, regs->pc); 534 kvmppc_set_cr(vcpu, regs->cr); 535 kvmppc_set_ctr(vcpu, regs->ctr); 536 kvmppc_set_lr(vcpu, regs->lr); 537 kvmppc_set_xer(vcpu, regs->xer); 538 kvmppc_set_msr(vcpu, regs->msr); 539 kvmppc_set_srr0(vcpu, regs->srr0); 540 kvmppc_set_srr1(vcpu, regs->srr1); 541 kvmppc_set_sprg0(vcpu, regs->sprg0); 542 kvmppc_set_sprg1(vcpu, regs->sprg1); 543 kvmppc_set_sprg2(vcpu, regs->sprg2); 544 kvmppc_set_sprg3(vcpu, regs->sprg3); 545 kvmppc_set_sprg4(vcpu, regs->sprg4); 546 kvmppc_set_sprg5(vcpu, regs->sprg5); 547 kvmppc_set_sprg6(vcpu, regs->sprg6); 548 kvmppc_set_sprg7(vcpu, regs->sprg7); 549 550 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) 551 kvmppc_set_gpr(vcpu, i, regs->gpr[i]); 552 553 vcpu_put(vcpu); 554 return 0; 555 } 556 557 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) 558 { 559 return -ENOTSUPP; 560 } 561 562 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) 563 { 564 return -ENOTSUPP; 565 } 566 567 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, 568 union kvmppc_one_reg *val) 569 { 570 int r = 0; 571 long int i; 572 573 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val); 574 if (r == -EINVAL) { 575 r = 0; 576 switch (id) { 577 case KVM_REG_PPC_DAR: 578 *val = get_reg_val(id, kvmppc_get_dar(vcpu)); 579 break; 580 case KVM_REG_PPC_DSISR: 581 *val = get_reg_val(id, kvmppc_get_dsisr(vcpu)); 582 break; 583 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: 584 i = id - KVM_REG_PPC_FPR0; 585 *val = get_reg_val(id, VCPU_FPR(vcpu, i)); 586 break; 587 case KVM_REG_PPC_FPSCR: 588 *val = get_reg_val(id, vcpu->arch.fp.fpscr); 589 break; 590 #ifdef CONFIG_VSX 591 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: 592 if (cpu_has_feature(CPU_FTR_VSX)) { 593 i = id - KVM_REG_PPC_VSR0; 594 val->vsxval[0] = vcpu->arch.fp.fpr[i][0]; 595 val->vsxval[1] = vcpu->arch.fp.fpr[i][1]; 596 } else { 597 r = -ENXIO; 598 } 599 break; 600 #endif /* CONFIG_VSX */ 601 case KVM_REG_PPC_DEBUG_INST: 602 *val = get_reg_val(id, INS_TW); 603 break; 604 #ifdef CONFIG_KVM_XICS 605 case KVM_REG_PPC_ICP_STATE: 606 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) { 607 r = -ENXIO; 608 break; 609 } 610 if (xive_enabled()) 611 *val = get_reg_val(id, kvmppc_xive_get_icp(vcpu)); 612 else 613 *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu)); 614 break; 615 #endif /* CONFIG_KVM_XICS */ 616 case KVM_REG_PPC_FSCR: 617 *val = get_reg_val(id, vcpu->arch.fscr); 618 break; 619 case KVM_REG_PPC_TAR: 620 *val = get_reg_val(id, vcpu->arch.tar); 621 break; 622 case KVM_REG_PPC_EBBHR: 623 *val = get_reg_val(id, vcpu->arch.ebbhr); 624 break; 625 case KVM_REG_PPC_EBBRR: 626 *val = get_reg_val(id, vcpu->arch.ebbrr); 627 break; 628 case KVM_REG_PPC_BESCR: 629 *val = get_reg_val(id, vcpu->arch.bescr); 630 break; 631 case KVM_REG_PPC_IC: 632 *val = get_reg_val(id, vcpu->arch.ic); 633 break; 634 default: 635 r = -EINVAL; 636 break; 637 } 638 } 639 640 return r; 641 } 642 643 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, 644 union kvmppc_one_reg *val) 645 { 646 int r = 0; 647 long int i; 648 649 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val); 650 if (r == -EINVAL) { 651 r = 0; 652 switch (id) { 653 case KVM_REG_PPC_DAR: 654 kvmppc_set_dar(vcpu, set_reg_val(id, *val)); 655 break; 656 case KVM_REG_PPC_DSISR: 657 kvmppc_set_dsisr(vcpu, set_reg_val(id, *val)); 658 break; 659 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: 660 i = id - KVM_REG_PPC_FPR0; 661 VCPU_FPR(vcpu, i) = set_reg_val(id, *val); 662 break; 663 case KVM_REG_PPC_FPSCR: 664 vcpu->arch.fp.fpscr = set_reg_val(id, *val); 665 break; 666 #ifdef CONFIG_VSX 667 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: 668 if (cpu_has_feature(CPU_FTR_VSX)) { 669 i = id - KVM_REG_PPC_VSR0; 670 vcpu->arch.fp.fpr[i][0] = val->vsxval[0]; 671 vcpu->arch.fp.fpr[i][1] = val->vsxval[1]; 672 } else { 673 r = -ENXIO; 674 } 675 break; 676 #endif /* CONFIG_VSX */ 677 #ifdef CONFIG_KVM_XICS 678 case KVM_REG_PPC_ICP_STATE: 679 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) { 680 r = -ENXIO; 681 break; 682 } 683 if (xive_enabled()) 684 r = kvmppc_xive_set_icp(vcpu, set_reg_val(id, *val)); 685 else 686 r = kvmppc_xics_set_icp(vcpu, set_reg_val(id, *val)); 687 break; 688 #endif /* CONFIG_KVM_XICS */ 689 case KVM_REG_PPC_FSCR: 690 vcpu->arch.fscr = set_reg_val(id, *val); 691 break; 692 case KVM_REG_PPC_TAR: 693 vcpu->arch.tar = set_reg_val(id, *val); 694 break; 695 case KVM_REG_PPC_EBBHR: 696 vcpu->arch.ebbhr = set_reg_val(id, *val); 697 break; 698 case KVM_REG_PPC_EBBRR: 699 vcpu->arch.ebbrr = set_reg_val(id, *val); 700 break; 701 case KVM_REG_PPC_BESCR: 702 vcpu->arch.bescr = set_reg_val(id, *val); 703 break; 704 case KVM_REG_PPC_IC: 705 vcpu->arch.ic = set_reg_val(id, *val); 706 break; 707 default: 708 r = -EINVAL; 709 break; 710 } 711 } 712 713 return r; 714 } 715 716 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) 717 { 718 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu); 719 } 720 721 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) 722 { 723 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu); 724 } 725 726 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr) 727 { 728 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr); 729 } 730 EXPORT_SYMBOL_GPL(kvmppc_set_msr); 731 732 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) 733 { 734 return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu); 735 } 736 737 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, 738 struct kvm_translation *tr) 739 { 740 return 0; 741 } 742 743 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, 744 struct kvm_guest_debug *dbg) 745 { 746 vcpu->guest_debug = dbg->control; 747 return 0; 748 } 749 750 void kvmppc_decrementer_func(struct kvm_vcpu *vcpu) 751 { 752 kvmppc_core_queue_dec(vcpu); 753 kvm_vcpu_kick(vcpu); 754 } 755 756 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) 757 { 758 return kvm->arch.kvm_ops->vcpu_create(kvm, id); 759 } 760 761 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) 762 { 763 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu); 764 } 765 766 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu) 767 { 768 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu); 769 } 770 771 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) 772 { 773 return kvm->arch.kvm_ops->get_dirty_log(kvm, log); 774 } 775 776 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, 777 struct kvm_memory_slot *dont) 778 { 779 kvm->arch.kvm_ops->free_memslot(free, dont); 780 } 781 782 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, 783 unsigned long npages) 784 { 785 return kvm->arch.kvm_ops->create_memslot(slot, npages); 786 } 787 788 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot) 789 { 790 kvm->arch.kvm_ops->flush_memslot(kvm, memslot); 791 } 792 793 int kvmppc_core_prepare_memory_region(struct kvm *kvm, 794 struct kvm_memory_slot *memslot, 795 const struct kvm_userspace_memory_region *mem) 796 { 797 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem); 798 } 799 800 void kvmppc_core_commit_memory_region(struct kvm *kvm, 801 const struct kvm_userspace_memory_region *mem, 802 const struct kvm_memory_slot *old, 803 const struct kvm_memory_slot *new) 804 { 805 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new); 806 } 807 808 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva) 809 { 810 return kvm->arch.kvm_ops->unmap_hva(kvm, hva); 811 } 812 EXPORT_SYMBOL_GPL(kvm_unmap_hva); 813 814 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end) 815 { 816 return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end); 817 } 818 819 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end) 820 { 821 return kvm->arch.kvm_ops->age_hva(kvm, start, end); 822 } 823 824 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) 825 { 826 return kvm->arch.kvm_ops->test_age_hva(kvm, hva); 827 } 828 829 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte) 830 { 831 kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte); 832 } 833 834 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu) 835 { 836 vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu); 837 } 838 839 int kvmppc_core_init_vm(struct kvm *kvm) 840 { 841 842 #ifdef CONFIG_PPC64 843 INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables); 844 INIT_LIST_HEAD(&kvm->arch.rtas_tokens); 845 #endif 846 847 return kvm->arch.kvm_ops->init_vm(kvm); 848 } 849 850 void kvmppc_core_destroy_vm(struct kvm *kvm) 851 { 852 kvm->arch.kvm_ops->destroy_vm(kvm); 853 854 #ifdef CONFIG_PPC64 855 kvmppc_rtas_tokens_free(kvm); 856 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables)); 857 #endif 858 } 859 860 int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu) 861 { 862 unsigned long size = kvmppc_get_gpr(vcpu, 4); 863 unsigned long addr = kvmppc_get_gpr(vcpu, 5); 864 u64 buf; 865 int srcu_idx; 866 int ret; 867 868 if (!is_power_of_2(size) || (size > sizeof(buf))) 869 return H_TOO_HARD; 870 871 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); 872 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf); 873 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx); 874 if (ret != 0) 875 return H_TOO_HARD; 876 877 switch (size) { 878 case 1: 879 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf); 880 break; 881 882 case 2: 883 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf)); 884 break; 885 886 case 4: 887 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf)); 888 break; 889 890 case 8: 891 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf)); 892 break; 893 894 default: 895 BUG(); 896 } 897 898 return H_SUCCESS; 899 } 900 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load); 901 902 int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu) 903 { 904 unsigned long size = kvmppc_get_gpr(vcpu, 4); 905 unsigned long addr = kvmppc_get_gpr(vcpu, 5); 906 unsigned long val = kvmppc_get_gpr(vcpu, 6); 907 u64 buf; 908 int srcu_idx; 909 int ret; 910 911 switch (size) { 912 case 1: 913 *(u8 *)&buf = val; 914 break; 915 916 case 2: 917 *(__be16 *)&buf = cpu_to_be16(val); 918 break; 919 920 case 4: 921 *(__be32 *)&buf = cpu_to_be32(val); 922 break; 923 924 case 8: 925 *(__be64 *)&buf = cpu_to_be64(val); 926 break; 927 928 default: 929 return H_TOO_HARD; 930 } 931 932 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); 933 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf); 934 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx); 935 if (ret != 0) 936 return H_TOO_HARD; 937 938 return H_SUCCESS; 939 } 940 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store); 941 942 int kvmppc_core_check_processor_compat(void) 943 { 944 /* 945 * We always return 0 for book3s. We check 946 * for compatibility while loading the HV 947 * or PR module 948 */ 949 return 0; 950 } 951 952 int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall) 953 { 954 return kvm->arch.kvm_ops->hcall_implemented(hcall); 955 } 956 957 #ifdef CONFIG_KVM_XICS 958 int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, 959 bool line_status) 960 { 961 if (xive_enabled()) 962 return kvmppc_xive_set_irq(kvm, irq_source_id, irq, level, 963 line_status); 964 else 965 return kvmppc_xics_set_irq(kvm, irq_source_id, irq, level, 966 line_status); 967 } 968 969 int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *irq_entry, 970 struct kvm *kvm, int irq_source_id, 971 int level, bool line_status) 972 { 973 return kvm_set_irq(kvm, irq_source_id, irq_entry->gsi, 974 level, line_status); 975 } 976 static int kvmppc_book3s_set_irq(struct kvm_kernel_irq_routing_entry *e, 977 struct kvm *kvm, int irq_source_id, int level, 978 bool line_status) 979 { 980 return kvm_set_irq(kvm, irq_source_id, e->gsi, level, line_status); 981 } 982 983 int kvm_irq_map_gsi(struct kvm *kvm, 984 struct kvm_kernel_irq_routing_entry *entries, int gsi) 985 { 986 entries->gsi = gsi; 987 entries->type = KVM_IRQ_ROUTING_IRQCHIP; 988 entries->set = kvmppc_book3s_set_irq; 989 entries->irqchip.irqchip = 0; 990 entries->irqchip.pin = gsi; 991 return 1; 992 } 993 994 int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin) 995 { 996 return pin; 997 } 998 999 #endif /* CONFIG_KVM_XICS */ 1000 1001 static int kvmppc_book3s_init(void) 1002 { 1003 int r; 1004 1005 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); 1006 if (r) 1007 return r; 1008 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 1009 r = kvmppc_book3s_init_pr(); 1010 #endif 1011 1012 #ifdef CONFIG_KVM_XICS 1013 #ifdef CONFIG_KVM_XIVE 1014 if (xive_enabled()) { 1015 kvmppc_xive_init_module(); 1016 kvm_register_device_ops(&kvm_xive_ops, KVM_DEV_TYPE_XICS); 1017 } else 1018 #endif 1019 kvm_register_device_ops(&kvm_xics_ops, KVM_DEV_TYPE_XICS); 1020 #endif 1021 return r; 1022 } 1023 1024 static void kvmppc_book3s_exit(void) 1025 { 1026 #ifdef CONFIG_KVM_XICS 1027 if (xive_enabled()) 1028 kvmppc_xive_exit_module(); 1029 #endif 1030 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 1031 kvmppc_book3s_exit_pr(); 1032 #endif 1033 kvm_exit(); 1034 } 1035 1036 module_init(kvmppc_book3s_init); 1037 module_exit(kvmppc_book3s_exit); 1038 1039 /* On 32bit this is our one and only kernel module */ 1040 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER 1041 MODULE_ALIAS_MISCDEV(KVM_MINOR); 1042 MODULE_ALIAS("devname:kvm"); 1043 #endif 1044