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14#include <linux/kvm_host.h>
15#include <linux/err.h>
16#include <linux/export.h>
17#include <linux/slab.h>
18#include <linux/module.h>
19#include <linux/miscdevice.h>
20#include <linux/gfp.h>
21#include <linux/sched.h>
22#include <linux/vmalloc.h>
23#include <linux/highmem.h>
24
25#include <asm/reg.h>
26#include <asm/cputable.h>
27#include <asm/cacheflush.h>
28#include <linux/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 <asm/xive.h>
35
36#include "book3s.h"
37#include "trace.h"
38
39
40
41const struct _kvm_stats_desc kvm_vm_stats_desc[] = {
42 KVM_GENERIC_VM_STATS(),
43 STATS_DESC_ICOUNTER(VM, num_2M_pages),
44 STATS_DESC_ICOUNTER(VM, num_1G_pages)
45};
46static_assert(ARRAY_SIZE(kvm_vm_stats_desc) ==
47 sizeof(struct kvm_vm_stat) / sizeof(u64));
48
49const struct kvm_stats_header kvm_vm_stats_header = {
50 .name_size = KVM_STATS_NAME_SIZE,
51 .num_desc = ARRAY_SIZE(kvm_vm_stats_desc),
52 .id_offset = sizeof(struct kvm_stats_header),
53 .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE,
54 .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE +
55 sizeof(kvm_vm_stats_desc),
56};
57
58const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = {
59 KVM_GENERIC_VCPU_STATS(),
60 STATS_DESC_COUNTER(VCPU, sum_exits),
61 STATS_DESC_COUNTER(VCPU, mmio_exits),
62 STATS_DESC_COUNTER(VCPU, signal_exits),
63 STATS_DESC_COUNTER(VCPU, light_exits),
64 STATS_DESC_COUNTER(VCPU, itlb_real_miss_exits),
65 STATS_DESC_COUNTER(VCPU, itlb_virt_miss_exits),
66 STATS_DESC_COUNTER(VCPU, dtlb_real_miss_exits),
67 STATS_DESC_COUNTER(VCPU, dtlb_virt_miss_exits),
68 STATS_DESC_COUNTER(VCPU, syscall_exits),
69 STATS_DESC_COUNTER(VCPU, isi_exits),
70 STATS_DESC_COUNTER(VCPU, dsi_exits),
71 STATS_DESC_COUNTER(VCPU, emulated_inst_exits),
72 STATS_DESC_COUNTER(VCPU, dec_exits),
73 STATS_DESC_COUNTER(VCPU, ext_intr_exits),
74 STATS_DESC_TIME_NSEC(VCPU, halt_wait_ns),
75 STATS_DESC_COUNTER(VCPU, halt_successful_wait),
76 STATS_DESC_COUNTER(VCPU, dbell_exits),
77 STATS_DESC_COUNTER(VCPU, gdbell_exits),
78 STATS_DESC_COUNTER(VCPU, ld),
79 STATS_DESC_COUNTER(VCPU, st),
80 STATS_DESC_COUNTER(VCPU, pf_storage),
81 STATS_DESC_COUNTER(VCPU, pf_instruc),
82 STATS_DESC_COUNTER(VCPU, sp_storage),
83 STATS_DESC_COUNTER(VCPU, sp_instruc),
84 STATS_DESC_COUNTER(VCPU, queue_intr),
85 STATS_DESC_COUNTER(VCPU, ld_slow),
86 STATS_DESC_COUNTER(VCPU, st_slow),
87 STATS_DESC_COUNTER(VCPU, pthru_all),
88 STATS_DESC_COUNTER(VCPU, pthru_host),
89 STATS_DESC_COUNTER(VCPU, pthru_bad_aff)
90};
91static_assert(ARRAY_SIZE(kvm_vcpu_stats_desc) ==
92 sizeof(struct kvm_vcpu_stat) / sizeof(u64));
93
94const struct kvm_stats_header kvm_vcpu_stats_header = {
95 .name_size = KVM_STATS_NAME_SIZE,
96 .num_desc = ARRAY_SIZE(kvm_vcpu_stats_desc),
97 .id_offset = sizeof(struct kvm_stats_header),
98 .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE,
99 .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE +
100 sizeof(kvm_vcpu_stats_desc),
101};
102
103static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
104 unsigned long pending_now, unsigned long old_pending)
105{
106 if (is_kvmppc_hv_enabled(vcpu->kvm))
107 return;
108 if (pending_now)
109 kvmppc_set_int_pending(vcpu, 1);
110 else if (old_pending)
111 kvmppc_set_int_pending(vcpu, 0);
112}
113
114static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
115{
116 ulong crit_raw;
117 ulong crit_r1;
118 bool crit;
119
120 if (is_kvmppc_hv_enabled(vcpu->kvm))
121 return false;
122
123 crit_raw = kvmppc_get_critical(vcpu);
124 crit_r1 = kvmppc_get_gpr(vcpu, 1);
125
126
127 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
128 crit_raw &= 0xffffffff;
129 crit_r1 &= 0xffffffff;
130 }
131
132
133 crit = (crit_raw == crit_r1);
134
135 crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR);
136
137 return crit;
138}
139
140void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
141{
142 vcpu->kvm->arch.kvm_ops->inject_interrupt(vcpu, vec, flags);
143}
144
145static int kvmppc_book3s_vec2irqprio(unsigned int vec)
146{
147 unsigned int prio;
148
149 switch (vec) {
150 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break;
151 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break;
152 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break;
153 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break;
154 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break;
155 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break;
156 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break;
157 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break;
158 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break;
159 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break;
160 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break;
161 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break;
162 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break;
163 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break;
164 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break;
165 case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; break;
166 default: prio = BOOK3S_IRQPRIO_MAX; break;
167 }
168
169 return prio;
170}
171
172void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
173 unsigned int vec)
174{
175 unsigned long old_pending = vcpu->arch.pending_exceptions;
176
177 clear_bit(kvmppc_book3s_vec2irqprio(vec),
178 &vcpu->arch.pending_exceptions);
179
180 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
181 old_pending);
182}
183
184void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
185{
186 vcpu->stat.queue_intr++;
187
188 set_bit(kvmppc_book3s_vec2irqprio(vec),
189 &vcpu->arch.pending_exceptions);
190#ifdef EXIT_DEBUG
191 printk(KERN_INFO "Queueing interrupt %x\n", vec);
192#endif
193}
194EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
195
196void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong flags)
197{
198
199 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_MACHINE_CHECK, flags);
200}
201EXPORT_SYMBOL_GPL(kvmppc_core_queue_machine_check);
202
203void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu)
204{
205 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_SYSCALL, 0);
206}
207EXPORT_SYMBOL(kvmppc_core_queue_syscall);
208
209void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
210{
211
212 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
213}
214EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
215
216void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu)
217{
218
219 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, 0);
220}
221
222void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu)
223{
224
225 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_ALTIVEC, 0);
226}
227
228void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu)
229{
230
231 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_VSX, 0);
232}
233
234void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
235{
236 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
237}
238EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
239
240int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
241{
242 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
243}
244EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
245
246void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
247{
248 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
249}
250EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
251
252void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
253 struct kvm_interrupt *irq)
254{
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273
274
275 if (irq->irq == KVM_INTERRUPT_SET)
276 vcpu->arch.external_oneshot = 1;
277
278 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
279}
280
281void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
282{
283 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
284}
285
286void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar,
287 ulong flags)
288{
289 kvmppc_set_dar(vcpu, dar);
290 kvmppc_set_dsisr(vcpu, flags);
291 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE, 0);
292}
293EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage);
294
295void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags)
296{
297 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_INST_STORAGE, flags);
298}
299EXPORT_SYMBOL_GPL(kvmppc_core_queue_inst_storage);
300
301static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu,
302 unsigned int priority)
303{
304 int deliver = 1;
305 int vec = 0;
306 bool crit = kvmppc_critical_section(vcpu);
307
308 switch (priority) {
309 case BOOK3S_IRQPRIO_DECREMENTER:
310 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
311 vec = BOOK3S_INTERRUPT_DECREMENTER;
312 break;
313 case BOOK3S_IRQPRIO_EXTERNAL:
314 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
315 vec = BOOK3S_INTERRUPT_EXTERNAL;
316 break;
317 case BOOK3S_IRQPRIO_SYSTEM_RESET:
318 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
319 break;
320 case BOOK3S_IRQPRIO_MACHINE_CHECK:
321 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
322 break;
323 case BOOK3S_IRQPRIO_DATA_STORAGE:
324 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
325 break;
326 case BOOK3S_IRQPRIO_INST_STORAGE:
327 vec = BOOK3S_INTERRUPT_INST_STORAGE;
328 break;
329 case BOOK3S_IRQPRIO_DATA_SEGMENT:
330 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
331 break;
332 case BOOK3S_IRQPRIO_INST_SEGMENT:
333 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
334 break;
335 case BOOK3S_IRQPRIO_ALIGNMENT:
336 vec = BOOK3S_INTERRUPT_ALIGNMENT;
337 break;
338 case BOOK3S_IRQPRIO_PROGRAM:
339 vec = BOOK3S_INTERRUPT_PROGRAM;
340 break;
341 case BOOK3S_IRQPRIO_VSX:
342 vec = BOOK3S_INTERRUPT_VSX;
343 break;
344 case BOOK3S_IRQPRIO_ALTIVEC:
345 vec = BOOK3S_INTERRUPT_ALTIVEC;
346 break;
347 case BOOK3S_IRQPRIO_FP_UNAVAIL:
348 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
349 break;
350 case BOOK3S_IRQPRIO_SYSCALL:
351 vec = BOOK3S_INTERRUPT_SYSCALL;
352 break;
353 case BOOK3S_IRQPRIO_DEBUG:
354 vec = BOOK3S_INTERRUPT_TRACE;
355 break;
356 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
357 vec = BOOK3S_INTERRUPT_PERFMON;
358 break;
359 case BOOK3S_IRQPRIO_FAC_UNAVAIL:
360 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL;
361 break;
362 default:
363 deliver = 0;
364 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
365 break;
366 }
367
368#if 0
369 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
370#endif
371
372 if (deliver)
373 kvmppc_inject_interrupt(vcpu, vec, 0);
374
375 return deliver;
376}
377
378
379
380
381static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
382{
383 switch (priority) {
384 case BOOK3S_IRQPRIO_DECREMENTER:
385
386 return false;
387 case BOOK3S_IRQPRIO_EXTERNAL:
388
389
390
391
392
393 if (vcpu->arch.external_oneshot) {
394 vcpu->arch.external_oneshot = 0;
395 return true;
396 }
397 return false;
398 }
399
400 return true;
401}
402
403int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
404{
405 unsigned long *pending = &vcpu->arch.pending_exceptions;
406 unsigned long old_pending = vcpu->arch.pending_exceptions;
407 unsigned int priority;
408
409#ifdef EXIT_DEBUG
410 if (vcpu->arch.pending_exceptions)
411 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
412#endif
413 priority = __ffs(*pending);
414 while (priority < BOOK3S_IRQPRIO_MAX) {
415 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
416 clear_irqprio(vcpu, priority)) {
417 clear_bit(priority, &vcpu->arch.pending_exceptions);
418 break;
419 }
420
421 priority = find_next_bit(pending,
422 BITS_PER_BYTE * sizeof(*pending),
423 priority + 1);
424 }
425
426
427 kvmppc_update_int_pending(vcpu, *pending, old_pending);
428
429 return 0;
430}
431EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
432
433kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
434 bool *writable)
435{
436 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
437 gfn_t gfn = gpa >> PAGE_SHIFT;
438
439 if (!(kvmppc_get_msr(vcpu) & MSR_SF))
440 mp_pa = (uint32_t)mp_pa;
441
442
443 gpa &= ~0xFFFULL;
444 if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
445 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
446 kvm_pfn_t pfn;
447
448 pfn = (kvm_pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
449 get_page(pfn_to_page(pfn));
450 if (writable)
451 *writable = true;
452 return pfn;
453 }
454
455 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
456}
457EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
458
459int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
460 enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
461{
462 bool data = (xlid == XLATE_DATA);
463 bool iswrite = (xlrw == XLATE_WRITE);
464 int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
465 int r;
466
467 if (relocated) {
468 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
469 } else {
470 pte->eaddr = eaddr;
471 pte->raddr = eaddr & KVM_PAM;
472 pte->vpage = VSID_REAL | eaddr >> 12;
473 pte->may_read = true;
474 pte->may_write = true;
475 pte->may_execute = true;
476 r = 0;
477
478 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
479 !data) {
480 if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
481 ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
482 pte->raddr &= ~SPLIT_HACK_MASK;
483 }
484 }
485
486 return r;
487}
488
489int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
490 enum instruction_fetch_type type, u32 *inst)
491{
492 ulong pc = kvmppc_get_pc(vcpu);
493 int r;
494
495 if (type == INST_SC)
496 pc -= 4;
497
498 r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false);
499 if (r == EMULATE_DONE)
500 return r;
501 else
502 return EMULATE_AGAIN;
503}
504EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
505
506int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
507{
508 return 0;
509}
510
511void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
512{
513}
514
515int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
516 struct kvm_sregs *sregs)
517{
518 int ret;
519
520 vcpu_load(vcpu);
521 ret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
522 vcpu_put(vcpu);
523
524 return ret;
525}
526
527int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
528 struct kvm_sregs *sregs)
529{
530 int ret;
531
532 vcpu_load(vcpu);
533 ret = vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
534 vcpu_put(vcpu);
535
536 return ret;
537}
538
539int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
540{
541 int i;
542
543 regs->pc = kvmppc_get_pc(vcpu);
544 regs->cr = kvmppc_get_cr(vcpu);
545 regs->ctr = kvmppc_get_ctr(vcpu);
546 regs->lr = kvmppc_get_lr(vcpu);
547 regs->xer = kvmppc_get_xer(vcpu);
548 regs->msr = kvmppc_get_msr(vcpu);
549 regs->srr0 = kvmppc_get_srr0(vcpu);
550 regs->srr1 = kvmppc_get_srr1(vcpu);
551 regs->pid = vcpu->arch.pid;
552 regs->sprg0 = kvmppc_get_sprg0(vcpu);
553 regs->sprg1 = kvmppc_get_sprg1(vcpu);
554 regs->sprg2 = kvmppc_get_sprg2(vcpu);
555 regs->sprg3 = kvmppc_get_sprg3(vcpu);
556 regs->sprg4 = kvmppc_get_sprg4(vcpu);
557 regs->sprg5 = kvmppc_get_sprg5(vcpu);
558 regs->sprg6 = kvmppc_get_sprg6(vcpu);
559 regs->sprg7 = kvmppc_get_sprg7(vcpu);
560
561 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
562 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
563
564 return 0;
565}
566
567int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
568{
569 int i;
570
571 kvmppc_set_pc(vcpu, regs->pc);
572 kvmppc_set_cr(vcpu, regs->cr);
573 kvmppc_set_ctr(vcpu, regs->ctr);
574 kvmppc_set_lr(vcpu, regs->lr);
575 kvmppc_set_xer(vcpu, regs->xer);
576 kvmppc_set_msr(vcpu, regs->msr);
577 kvmppc_set_srr0(vcpu, regs->srr0);
578 kvmppc_set_srr1(vcpu, regs->srr1);
579 kvmppc_set_sprg0(vcpu, regs->sprg0);
580 kvmppc_set_sprg1(vcpu, regs->sprg1);
581 kvmppc_set_sprg2(vcpu, regs->sprg2);
582 kvmppc_set_sprg3(vcpu, regs->sprg3);
583 kvmppc_set_sprg4(vcpu, regs->sprg4);
584 kvmppc_set_sprg5(vcpu, regs->sprg5);
585 kvmppc_set_sprg6(vcpu, regs->sprg6);
586 kvmppc_set_sprg7(vcpu, regs->sprg7);
587
588 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
589 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
590
591 return 0;
592}
593
594int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
595{
596 return -EOPNOTSUPP;
597}
598
599int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
600{
601 return -EOPNOTSUPP;
602}
603
604int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
605 union kvmppc_one_reg *val)
606{
607 int r = 0;
608 long int i;
609
610 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
611 if (r == -EINVAL) {
612 r = 0;
613 switch (id) {
614 case KVM_REG_PPC_DAR:
615 *val = get_reg_val(id, kvmppc_get_dar(vcpu));
616 break;
617 case KVM_REG_PPC_DSISR:
618 *val = get_reg_val(id, kvmppc_get_dsisr(vcpu));
619 break;
620 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
621 i = id - KVM_REG_PPC_FPR0;
622 *val = get_reg_val(id, VCPU_FPR(vcpu, i));
623 break;
624 case KVM_REG_PPC_FPSCR:
625 *val = get_reg_val(id, vcpu->arch.fp.fpscr);
626 break;
627#ifdef CONFIG_VSX
628 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
629 if (cpu_has_feature(CPU_FTR_VSX)) {
630 i = id - KVM_REG_PPC_VSR0;
631 val->vsxval[0] = vcpu->arch.fp.fpr[i][0];
632 val->vsxval[1] = vcpu->arch.fp.fpr[i][1];
633 } else {
634 r = -ENXIO;
635 }
636 break;
637#endif
638 case KVM_REG_PPC_DEBUG_INST:
639 *val = get_reg_val(id, INS_TW);
640 break;
641#ifdef CONFIG_KVM_XICS
642 case KVM_REG_PPC_ICP_STATE:
643 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
644 r = -ENXIO;
645 break;
646 }
647 if (xics_on_xive())
648 *val = get_reg_val(id, kvmppc_xive_get_icp(vcpu));
649 else
650 *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu));
651 break;
652#endif
653#ifdef CONFIG_KVM_XIVE
654 case KVM_REG_PPC_VP_STATE:
655 if (!vcpu->arch.xive_vcpu) {
656 r = -ENXIO;
657 break;
658 }
659 if (xive_enabled())
660 r = kvmppc_xive_native_get_vp(vcpu, val);
661 else
662 r = -ENXIO;
663 break;
664#endif
665 case KVM_REG_PPC_FSCR:
666 *val = get_reg_val(id, vcpu->arch.fscr);
667 break;
668 case KVM_REG_PPC_TAR:
669 *val = get_reg_val(id, vcpu->arch.tar);
670 break;
671 case KVM_REG_PPC_EBBHR:
672 *val = get_reg_val(id, vcpu->arch.ebbhr);
673 break;
674 case KVM_REG_PPC_EBBRR:
675 *val = get_reg_val(id, vcpu->arch.ebbrr);
676 break;
677 case KVM_REG_PPC_BESCR:
678 *val = get_reg_val(id, vcpu->arch.bescr);
679 break;
680 case KVM_REG_PPC_IC:
681 *val = get_reg_val(id, vcpu->arch.ic);
682 break;
683 default:
684 r = -EINVAL;
685 break;
686 }
687 }
688
689 return r;
690}
691
692int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
693 union kvmppc_one_reg *val)
694{
695 int r = 0;
696 long int i;
697
698 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
699 if (r == -EINVAL) {
700 r = 0;
701 switch (id) {
702 case KVM_REG_PPC_DAR:
703 kvmppc_set_dar(vcpu, set_reg_val(id, *val));
704 break;
705 case KVM_REG_PPC_DSISR:
706 kvmppc_set_dsisr(vcpu, set_reg_val(id, *val));
707 break;
708 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
709 i = id - KVM_REG_PPC_FPR0;
710 VCPU_FPR(vcpu, i) = set_reg_val(id, *val);
711 break;
712 case KVM_REG_PPC_FPSCR:
713 vcpu->arch.fp.fpscr = set_reg_val(id, *val);
714 break;
715#ifdef CONFIG_VSX
716 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
717 if (cpu_has_feature(CPU_FTR_VSX)) {
718 i = id - KVM_REG_PPC_VSR0;
719 vcpu->arch.fp.fpr[i][0] = val->vsxval[0];
720 vcpu->arch.fp.fpr[i][1] = val->vsxval[1];
721 } else {
722 r = -ENXIO;
723 }
724 break;
725#endif
726#ifdef CONFIG_KVM_XICS
727 case KVM_REG_PPC_ICP_STATE:
728 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
729 r = -ENXIO;
730 break;
731 }
732 if (xics_on_xive())
733 r = kvmppc_xive_set_icp(vcpu, set_reg_val(id, *val));
734 else
735 r = kvmppc_xics_set_icp(vcpu, set_reg_val(id, *val));
736 break;
737#endif
738#ifdef CONFIG_KVM_XIVE
739 case KVM_REG_PPC_VP_STATE:
740 if (!vcpu->arch.xive_vcpu) {
741 r = -ENXIO;
742 break;
743 }
744 if (xive_enabled())
745 r = kvmppc_xive_native_set_vp(vcpu, val);
746 else
747 r = -ENXIO;
748 break;
749#endif
750 case KVM_REG_PPC_FSCR:
751 vcpu->arch.fscr = set_reg_val(id, *val);
752 break;
753 case KVM_REG_PPC_TAR:
754 vcpu->arch.tar = set_reg_val(id, *val);
755 break;
756 case KVM_REG_PPC_EBBHR:
757 vcpu->arch.ebbhr = set_reg_val(id, *val);
758 break;
759 case KVM_REG_PPC_EBBRR:
760 vcpu->arch.ebbrr = set_reg_val(id, *val);
761 break;
762 case KVM_REG_PPC_BESCR:
763 vcpu->arch.bescr = set_reg_val(id, *val);
764 break;
765 case KVM_REG_PPC_IC:
766 vcpu->arch.ic = set_reg_val(id, *val);
767 break;
768 default:
769 r = -EINVAL;
770 break;
771 }
772 }
773
774 return r;
775}
776
777void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
778{
779 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
780}
781
782void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
783{
784 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
785}
786
787void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
788{
789 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
790}
791EXPORT_SYMBOL_GPL(kvmppc_set_msr);
792
793int kvmppc_vcpu_run(struct kvm_vcpu *vcpu)
794{
795 return vcpu->kvm->arch.kvm_ops->vcpu_run(vcpu);
796}
797
798int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
799 struct kvm_translation *tr)
800{
801 return 0;
802}
803
804int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
805 struct kvm_guest_debug *dbg)
806{
807 vcpu_load(vcpu);
808 vcpu->guest_debug = dbg->control;
809 vcpu_put(vcpu);
810 return 0;
811}
812
813void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
814{
815 kvmppc_core_queue_dec(vcpu);
816 kvm_vcpu_kick(vcpu);
817}
818
819int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu)
820{
821 return vcpu->kvm->arch.kvm_ops->vcpu_create(vcpu);
822}
823
824void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
825{
826 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
827}
828
829int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
830{
831 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
832}
833
834void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot)
835{
836
837}
838
839int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
840{
841 return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
842}
843
844void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
845{
846 kvm->arch.kvm_ops->free_memslot(slot);
847}
848
849void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
850{
851 kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
852}
853
854int kvmppc_core_prepare_memory_region(struct kvm *kvm,
855 struct kvm_memory_slot *memslot,
856 const struct kvm_userspace_memory_region *mem,
857 enum kvm_mr_change change)
858{
859 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem,
860 change);
861}
862
863void kvmppc_core_commit_memory_region(struct kvm *kvm,
864 const struct kvm_userspace_memory_region *mem,
865 const struct kvm_memory_slot *old,
866 const struct kvm_memory_slot *new,
867 enum kvm_mr_change change)
868{
869 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new, change);
870}
871
872bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range)
873{
874 return kvm->arch.kvm_ops->unmap_gfn_range(kvm, range);
875}
876
877bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
878{
879 return kvm->arch.kvm_ops->age_gfn(kvm, range);
880}
881
882bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
883{
884 return kvm->arch.kvm_ops->test_age_gfn(kvm, range);
885}
886
887bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
888{
889 return kvm->arch.kvm_ops->set_spte_gfn(kvm, range);
890}
891
892int kvmppc_core_init_vm(struct kvm *kvm)
893{
894
895#ifdef CONFIG_PPC64
896 INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables);
897 INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
898 mutex_init(&kvm->arch.rtas_token_lock);
899#endif
900
901 return kvm->arch.kvm_ops->init_vm(kvm);
902}
903
904void kvmppc_core_destroy_vm(struct kvm *kvm)
905{
906 kvm->arch.kvm_ops->destroy_vm(kvm);
907
908#ifdef CONFIG_PPC64
909 kvmppc_rtas_tokens_free(kvm);
910 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
911#endif
912
913#ifdef CONFIG_KVM_XICS
914
915
916
917
918 kfree(kvm->arch.xive_devices.native);
919 kvm->arch.xive_devices.native = NULL;
920 kfree(kvm->arch.xive_devices.xics_on_xive);
921 kvm->arch.xive_devices.xics_on_xive = NULL;
922 kfree(kvm->arch.xics_device);
923 kvm->arch.xics_device = NULL;
924#endif
925}
926
927int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
928{
929 unsigned long size = kvmppc_get_gpr(vcpu, 4);
930 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
931 u64 buf;
932 int srcu_idx;
933 int ret;
934
935 if (!is_power_of_2(size) || (size > sizeof(buf)))
936 return H_TOO_HARD;
937
938 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
939 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
940 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
941 if (ret != 0)
942 return H_TOO_HARD;
943
944 switch (size) {
945 case 1:
946 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf);
947 break;
948
949 case 2:
950 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf));
951 break;
952
953 case 4:
954 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf));
955 break;
956
957 case 8:
958 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf));
959 break;
960
961 default:
962 BUG();
963 }
964
965 return H_SUCCESS;
966}
967EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load);
968
969int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
970{
971 unsigned long size = kvmppc_get_gpr(vcpu, 4);
972 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
973 unsigned long val = kvmppc_get_gpr(vcpu, 6);
974 u64 buf;
975 int srcu_idx;
976 int ret;
977
978 switch (size) {
979 case 1:
980 *(u8 *)&buf = val;
981 break;
982
983 case 2:
984 *(__be16 *)&buf = cpu_to_be16(val);
985 break;
986
987 case 4:
988 *(__be32 *)&buf = cpu_to_be32(val);
989 break;
990
991 case 8:
992 *(__be64 *)&buf = cpu_to_be64(val);
993 break;
994
995 default:
996 return H_TOO_HARD;
997 }
998
999 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
1000 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
1001 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
1002 if (ret != 0)
1003 return H_TOO_HARD;
1004
1005 return H_SUCCESS;
1006}
1007EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store);
1008
1009int kvmppc_core_check_processor_compat(void)
1010{
1011
1012
1013
1014
1015
1016 return 0;
1017}
1018
1019int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
1020{
1021 return kvm->arch.kvm_ops->hcall_implemented(hcall);
1022}
1023
1024#ifdef CONFIG_KVM_XICS
1025int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
1026 bool line_status)
1027{
1028 if (xics_on_xive())
1029 return kvmppc_xive_set_irq(kvm, irq_source_id, irq, level,
1030 line_status);
1031 else
1032 return kvmppc_xics_set_irq(kvm, irq_source_id, irq, level,
1033 line_status);
1034}
1035
1036int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *irq_entry,
1037 struct kvm *kvm, int irq_source_id,
1038 int level, bool line_status)
1039{
1040 return kvm_set_irq(kvm, irq_source_id, irq_entry->gsi,
1041 level, line_status);
1042}
1043static int kvmppc_book3s_set_irq(struct kvm_kernel_irq_routing_entry *e,
1044 struct kvm *kvm, int irq_source_id, int level,
1045 bool line_status)
1046{
1047 return kvm_set_irq(kvm, irq_source_id, e->gsi, level, line_status);
1048}
1049
1050int kvm_irq_map_gsi(struct kvm *kvm,
1051 struct kvm_kernel_irq_routing_entry *entries, int gsi)
1052{
1053 entries->gsi = gsi;
1054 entries->type = KVM_IRQ_ROUTING_IRQCHIP;
1055 entries->set = kvmppc_book3s_set_irq;
1056 entries->irqchip.irqchip = 0;
1057 entries->irqchip.pin = gsi;
1058 return 1;
1059}
1060
1061int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin)
1062{
1063 return pin;
1064}
1065
1066#endif
1067
1068static int kvmppc_book3s_init(void)
1069{
1070 int r;
1071
1072 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
1073 if (r)
1074 return r;
1075#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1076 r = kvmppc_book3s_init_pr();
1077#endif
1078
1079#ifdef CONFIG_KVM_XICS
1080#ifdef CONFIG_KVM_XIVE
1081 if (xics_on_xive()) {
1082 kvm_register_device_ops(&kvm_xive_ops, KVM_DEV_TYPE_XICS);
1083 if (kvmppc_xive_native_supported())
1084 kvm_register_device_ops(&kvm_xive_native_ops,
1085 KVM_DEV_TYPE_XIVE);
1086 } else
1087#endif
1088 kvm_register_device_ops(&kvm_xics_ops, KVM_DEV_TYPE_XICS);
1089#endif
1090 return r;
1091}
1092
1093static void kvmppc_book3s_exit(void)
1094{
1095#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1096 kvmppc_book3s_exit_pr();
1097#endif
1098 kvm_exit();
1099}
1100
1101module_init(kvmppc_book3s_init);
1102module_exit(kvmppc_book3s_exit);
1103
1104
1105#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1106MODULE_ALIAS_MISCDEV(KVM_MINOR);
1107MODULE_ALIAS("devname:kvm");
1108#endif
1109
