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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved.
4 *
5 * Authors:
6 * Alexander Graf <agraf@suse.de>
7 * Kevin Wolf <mail@kevin-wolf.de>
8 *
9 * Description:
10 * This file is derived from arch/powerpc/kvm/44x.c,
11 * by Hollis Blanchard <hollisb@us.ibm.com>.
12 */
13
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/* #define EXIT_DEBUG */
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};
46
47const struct kvm_stats_header kvm_vm_stats_header = {
48 .name_size = KVM_STATS_NAME_SIZE,
49 .num_desc = ARRAY_SIZE(kvm_vm_stats_desc),
50 .id_offset = sizeof(struct kvm_stats_header),
51 .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE,
52 .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE +
53 sizeof(kvm_vm_stats_desc),
54};
55
56const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = {
57 KVM_GENERIC_VCPU_STATS(),
58 STATS_DESC_COUNTER(VCPU, sum_exits),
59 STATS_DESC_COUNTER(VCPU, mmio_exits),
60 STATS_DESC_COUNTER(VCPU, signal_exits),
61 STATS_DESC_COUNTER(VCPU, light_exits),
62 STATS_DESC_COUNTER(VCPU, itlb_real_miss_exits),
63 STATS_DESC_COUNTER(VCPU, itlb_virt_miss_exits),
64 STATS_DESC_COUNTER(VCPU, dtlb_real_miss_exits),
65 STATS_DESC_COUNTER(VCPU, dtlb_virt_miss_exits),
66 STATS_DESC_COUNTER(VCPU, syscall_exits),
67 STATS_DESC_COUNTER(VCPU, isi_exits),
68 STATS_DESC_COUNTER(VCPU, dsi_exits),
69 STATS_DESC_COUNTER(VCPU, emulated_inst_exits),
70 STATS_DESC_COUNTER(VCPU, dec_exits),
71 STATS_DESC_COUNTER(VCPU, ext_intr_exits),
72 STATS_DESC_COUNTER(VCPU, halt_successful_wait),
73 STATS_DESC_COUNTER(VCPU, dbell_exits),
74 STATS_DESC_COUNTER(VCPU, gdbell_exits),
75 STATS_DESC_COUNTER(VCPU, ld),
76 STATS_DESC_COUNTER(VCPU, st),
77 STATS_DESC_COUNTER(VCPU, pf_storage),
78 STATS_DESC_COUNTER(VCPU, pf_instruc),
79 STATS_DESC_COUNTER(VCPU, sp_storage),
80 STATS_DESC_COUNTER(VCPU, sp_instruc),
81 STATS_DESC_COUNTER(VCPU, queue_intr),
82 STATS_DESC_COUNTER(VCPU, ld_slow),
83 STATS_DESC_COUNTER(VCPU, st_slow),
84 STATS_DESC_COUNTER(VCPU, pthru_all),
85 STATS_DESC_COUNTER(VCPU, pthru_host),
86 STATS_DESC_COUNTER(VCPU, pthru_bad_aff)
87};
88
89const struct kvm_stats_header kvm_vcpu_stats_header = {
90 .name_size = KVM_STATS_NAME_SIZE,
91 .num_desc = ARRAY_SIZE(kvm_vcpu_stats_desc),
92 .id_offset = sizeof(struct kvm_stats_header),
93 .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE,
94 .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE +
95 sizeof(kvm_vcpu_stats_desc),
96};
97
98static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
99 unsigned long pending_now, unsigned long old_pending)
100{
101 if (is_kvmppc_hv_enabled(vcpu->kvm))
102 return;
103 if (pending_now)
104 kvmppc_set_int_pending(vcpu, 1);
105 else if (old_pending)
106 kvmppc_set_int_pending(vcpu, 0);
107}
108
109static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
110{
111 ulong crit_raw;
112 ulong crit_r1;
113 bool crit;
114
115 if (is_kvmppc_hv_enabled(vcpu->kvm))
116 return false;
117
118 crit_raw = kvmppc_get_critical(vcpu);
119 crit_r1 = kvmppc_get_gpr(vcpu, 1);
120
121 /* Truncate crit indicators in 32 bit mode */
122 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
123 crit_raw &= 0xffffffff;
124 crit_r1 &= 0xffffffff;
125 }
126
127 /* Critical section when crit == r1 */
128 crit = (crit_raw == crit_r1);
129 /* ... and we're in supervisor mode */
130 crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR);
131
132 return crit;
133}
134
135void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
136{
137 vcpu->kvm->arch.kvm_ops->inject_interrupt(vcpu, vec, flags);
138}
139
140static int kvmppc_book3s_vec2irqprio(unsigned int vec)
141{
142 unsigned int prio;
143
144 switch (vec) {
145 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break;
146 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break;
147 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break;
148 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break;
149 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break;
150 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break;
151 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break;
152 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break;
153 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break;
154 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break;
155 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break;
156 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break;
157 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break;
158 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break;
159 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break;
160 case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; break;
161 default: prio = BOOK3S_IRQPRIO_MAX; break;
162 }
163
164 return prio;
165}
166
167void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
168 unsigned int vec)
169{
170 unsigned long old_pending = vcpu->arch.pending_exceptions;
171
172 clear_bit(kvmppc_book3s_vec2irqprio(vec),
173 &vcpu->arch.pending_exceptions);
174
175 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
176 old_pending);
177}
178
179void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
180{
181 vcpu->stat.queue_intr++;
182
183 set_bit(kvmppc_book3s_vec2irqprio(vec),
184 &vcpu->arch.pending_exceptions);
185#ifdef EXIT_DEBUG
186 printk(KERN_INFO "Queueing interrupt %x\n", vec);
187#endif
188}
189EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
190
191void kvmppc_core_queue_machine_check(struct kvm_vcpu *vcpu, ulong srr1_flags)
192{
193 /* might as well deliver this straight away */
194 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_MACHINE_CHECK, srr1_flags);
195}
196EXPORT_SYMBOL_GPL(kvmppc_core_queue_machine_check);
197
198void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu)
199{
200 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_SYSCALL, 0);
201}
202EXPORT_SYMBOL(kvmppc_core_queue_syscall);
203
204void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong srr1_flags)
205{
206 /* might as well deliver this straight away */
207 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, srr1_flags);
208}
209EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
210
211void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu, ulong srr1_flags)
212{
213 /* might as well deliver this straight away */
214 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, srr1_flags);
215}
216
217void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu, ulong srr1_flags)
218{
219 /* might as well deliver this straight away */
220 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_ALTIVEC, srr1_flags);
221}
222
223void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu, ulong srr1_flags)
224{
225 /* might as well deliver this straight away */
226 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_VSX, srr1_flags);
227}
228
229void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
230{
231 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
232}
233EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
234
235int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
236{
237 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
238}
239EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
240
241void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
242{
243 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
244}
245EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
246
247void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
248 struct kvm_interrupt *irq)
249{
250 /*
251 * This case (KVM_INTERRUPT_SET) should never actually arise for
252 * a pseries guest (because pseries guests expect their interrupt
253 * controllers to continue asserting an external interrupt request
254 * until it is acknowledged at the interrupt controller), but is
255 * included to avoid ABI breakage and potentially for other
256 * sorts of guest.
257 *
258 * There is a subtlety here: HV KVM does not test the
259 * external_oneshot flag in the code that synthesizes
260 * external interrupts for the guest just before entering
261 * the guest. That is OK even if userspace did do a
262 * KVM_INTERRUPT_SET on a pseries guest vcpu, because the
263 * caller (kvm_vcpu_ioctl_interrupt) does a kvm_vcpu_kick()
264 * which ends up doing a smp_send_reschedule(), which will
265 * pull the guest all the way out to the host, meaning that
266 * we will call kvmppc_core_prepare_to_enter() before entering
267 * the guest again, and that will handle the external_oneshot
268 * flag correctly.
269 */
270 if (irq->irq == KVM_INTERRUPT_SET)
271 vcpu->arch.external_oneshot = 1;
272
273 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
274}
275
276void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
277{
278 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
279}
280
281void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong srr1_flags,
282 ulong dar, ulong dsisr)
283{
284 kvmppc_set_dar(vcpu, dar);
285 kvmppc_set_dsisr(vcpu, dsisr);
286 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE, srr1_flags);
287}
288EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage);
289
290void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong srr1_flags)
291{
292 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_INST_STORAGE, srr1_flags);
293}
294EXPORT_SYMBOL_GPL(kvmppc_core_queue_inst_storage);
295
296static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu,
297 unsigned int priority)
298{
299 int deliver = 1;
300 int vec = 0;
301 bool crit = kvmppc_critical_section(vcpu);
302
303 switch (priority) {
304 case BOOK3S_IRQPRIO_DECREMENTER:
305 deliver = !kvmhv_is_nestedv2() && (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
306 vec = BOOK3S_INTERRUPT_DECREMENTER;
307 break;
308 case BOOK3S_IRQPRIO_EXTERNAL:
309 deliver = !kvmhv_is_nestedv2() && (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
310 vec = BOOK3S_INTERRUPT_EXTERNAL;
311 break;
312 case BOOK3S_IRQPRIO_SYSTEM_RESET:
313 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
314 break;
315 case BOOK3S_IRQPRIO_MACHINE_CHECK:
316 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
317 break;
318 case BOOK3S_IRQPRIO_DATA_STORAGE:
319 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
320 break;
321 case BOOK3S_IRQPRIO_INST_STORAGE:
322 vec = BOOK3S_INTERRUPT_INST_STORAGE;
323 break;
324 case BOOK3S_IRQPRIO_DATA_SEGMENT:
325 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
326 break;
327 case BOOK3S_IRQPRIO_INST_SEGMENT:
328 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
329 break;
330 case BOOK3S_IRQPRIO_ALIGNMENT:
331 vec = BOOK3S_INTERRUPT_ALIGNMENT;
332 break;
333 case BOOK3S_IRQPRIO_PROGRAM:
334 vec = BOOK3S_INTERRUPT_PROGRAM;
335 break;
336 case BOOK3S_IRQPRIO_VSX:
337 vec = BOOK3S_INTERRUPT_VSX;
338 break;
339 case BOOK3S_IRQPRIO_ALTIVEC:
340 vec = BOOK3S_INTERRUPT_ALTIVEC;
341 break;
342 case BOOK3S_IRQPRIO_FP_UNAVAIL:
343 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
344 break;
345 case BOOK3S_IRQPRIO_SYSCALL:
346 vec = BOOK3S_INTERRUPT_SYSCALL;
347 break;
348 case BOOK3S_IRQPRIO_DEBUG:
349 vec = BOOK3S_INTERRUPT_TRACE;
350 break;
351 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
352 vec = BOOK3S_INTERRUPT_PERFMON;
353 break;
354 case BOOK3S_IRQPRIO_FAC_UNAVAIL:
355 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL;
356 break;
357 default:
358 deliver = 0;
359 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
360 break;
361 }
362
363#if 0
364 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
365#endif
366
367 if (deliver)
368 kvmppc_inject_interrupt(vcpu, vec, 0);
369
370 return deliver;
371}
372
373/*
374 * This function determines if an irqprio should be cleared once issued.
375 */
376static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
377{
378 switch (priority) {
379 case BOOK3S_IRQPRIO_DECREMENTER:
380 /* DEC interrupts get cleared by mtdec */
381 return false;
382 case BOOK3S_IRQPRIO_EXTERNAL:
383 /*
384 * External interrupts get cleared by userspace
385 * except when set by the KVM_INTERRUPT ioctl with
386 * KVM_INTERRUPT_SET (not KVM_INTERRUPT_SET_LEVEL).
387 */
388 if (vcpu->arch.external_oneshot) {
389 vcpu->arch.external_oneshot = 0;
390 return true;
391 }
392 return false;
393 }
394
395 return true;
396}
397
398int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
399{
400 unsigned long *pending = &vcpu->arch.pending_exceptions;
401 unsigned long old_pending = vcpu->arch.pending_exceptions;
402 unsigned int priority;
403
404#ifdef EXIT_DEBUG
405 if (vcpu->arch.pending_exceptions)
406 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
407#endif
408 priority = __ffs(*pending);
409 while (priority < BOOK3S_IRQPRIO_MAX) {
410 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
411 clear_irqprio(vcpu, priority)) {
412 clear_bit(priority, &vcpu->arch.pending_exceptions);
413 break;
414 }
415
416 priority = find_next_bit(pending,
417 BITS_PER_BYTE * sizeof(*pending),
418 priority + 1);
419 }
420
421 /* Tell the guest about our interrupt status */
422 kvmppc_update_int_pending(vcpu, *pending, old_pending);
423
424 return 0;
425}
426EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
427
428kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
429 bool *writable)
430{
431 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
432 gfn_t gfn = gpa >> PAGE_SHIFT;
433
434 if (!(kvmppc_get_msr(vcpu) & MSR_SF))
435 mp_pa = (uint32_t)mp_pa;
436
437 /* Magic page override */
438 gpa &= ~0xFFFULL;
439 if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
440 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
441 kvm_pfn_t pfn;
442
443 pfn = (kvm_pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
444 get_page(pfn_to_page(pfn));
445 if (writable)
446 *writable = true;
447 return pfn;
448 }
449
450 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
451}
452EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
453
454int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
455 enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
456{
457 bool data = (xlid == XLATE_DATA);
458 bool iswrite = (xlrw == XLATE_WRITE);
459 int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
460 int r;
461
462 if (relocated) {
463 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
464 } else {
465 pte->eaddr = eaddr;
466 pte->raddr = eaddr & KVM_PAM;
467 pte->vpage = VSID_REAL | eaddr >> 12;
468 pte->may_read = true;
469 pte->may_write = true;
470 pte->may_execute = true;
471 r = 0;
472
473 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
474 !data) {
475 if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
476 ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
477 pte->raddr &= ~SPLIT_HACK_MASK;
478 }
479 }
480
481 return r;
482}
483
484/*
485 * Returns prefixed instructions with the prefix in the high 32 bits
486 * of *inst and suffix in the low 32 bits. This is the same convention
487 * as used in HEIR, vcpu->arch.last_inst and vcpu->arch.emul_inst.
488 * Like vcpu->arch.last_inst but unlike vcpu->arch.emul_inst, each
489 * half of the value needs byte-swapping if the guest endianness is
490 * different from the host endianness.
491 */
492int kvmppc_load_last_inst(struct kvm_vcpu *vcpu,
493 enum instruction_fetch_type type, unsigned long *inst)
494{
495 ulong pc = kvmppc_get_pc(vcpu);
496 int r;
497 u32 iw;
498
499 if (type == INST_SC)
500 pc -= 4;
501
502 r = kvmppc_ld(vcpu, &pc, sizeof(u32), &iw, false);
503 if (r != EMULATE_DONE)
504 return EMULATE_AGAIN;
505 /*
506 * If [H]SRR1 indicates that the instruction that caused the
507 * current interrupt is a prefixed instruction, get the suffix.
508 */
509 if (kvmppc_get_msr(vcpu) & SRR1_PREFIXED) {
510 u32 suffix;
511 pc += 4;
512 r = kvmppc_ld(vcpu, &pc, sizeof(u32), &suffix, false);
513 if (r != EMULATE_DONE)
514 return EMULATE_AGAIN;
515 *inst = ((u64)iw << 32) | suffix;
516 } else {
517 *inst = iw;
518 }
519 return r;
520}
521EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
522
523int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
524{
525 return 0;
526}
527
528void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
529{
530}
531
532int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
533 struct kvm_sregs *sregs)
534{
535 int ret;
536
537 vcpu_load(vcpu);
538 ret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
539 vcpu_put(vcpu);
540
541 return ret;
542}
543
544int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
545 struct kvm_sregs *sregs)
546{
547 int ret;
548
549 vcpu_load(vcpu);
550 ret = vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
551 vcpu_put(vcpu);
552
553 return ret;
554}
555
556int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
557{
558 int i;
559
560 regs->pc = kvmppc_get_pc(vcpu);
561 regs->cr = kvmppc_get_cr(vcpu);
562 regs->ctr = kvmppc_get_ctr(vcpu);
563 regs->lr = kvmppc_get_lr(vcpu);
564 regs->xer = kvmppc_get_xer(vcpu);
565 regs->msr = kvmppc_get_msr(vcpu);
566 regs->srr0 = kvmppc_get_srr0(vcpu);
567 regs->srr1 = kvmppc_get_srr1(vcpu);
568 regs->pid = kvmppc_get_pid(vcpu);
569 regs->sprg0 = kvmppc_get_sprg0(vcpu);
570 regs->sprg1 = kvmppc_get_sprg1(vcpu);
571 regs->sprg2 = kvmppc_get_sprg2(vcpu);
572 regs->sprg3 = kvmppc_get_sprg3(vcpu);
573 regs->sprg4 = kvmppc_get_sprg4(vcpu);
574 regs->sprg5 = kvmppc_get_sprg5(vcpu);
575 regs->sprg6 = kvmppc_get_sprg6(vcpu);
576 regs->sprg7 = kvmppc_get_sprg7(vcpu);
577
578 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
579 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
580
581 return 0;
582}
583
584int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
585{
586 int i;
587
588 kvmppc_set_pc(vcpu, regs->pc);
589 kvmppc_set_cr(vcpu, regs->cr);
590 kvmppc_set_ctr(vcpu, regs->ctr);
591 kvmppc_set_lr(vcpu, regs->lr);
592 kvmppc_set_xer(vcpu, regs->xer);
593 kvmppc_set_msr(vcpu, regs->msr);
594 kvmppc_set_srr0(vcpu, regs->srr0);
595 kvmppc_set_srr1(vcpu, regs->srr1);
596 kvmppc_set_sprg0(vcpu, regs->sprg0);
597 kvmppc_set_sprg1(vcpu, regs->sprg1);
598 kvmppc_set_sprg2(vcpu, regs->sprg2);
599 kvmppc_set_sprg3(vcpu, regs->sprg3);
600 kvmppc_set_sprg4(vcpu, regs->sprg4);
601 kvmppc_set_sprg5(vcpu, regs->sprg5);
602 kvmppc_set_sprg6(vcpu, regs->sprg6);
603 kvmppc_set_sprg7(vcpu, regs->sprg7);
604
605 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
606 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
607
608 return 0;
609}
610
611int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
612{
613 return -EOPNOTSUPP;
614}
615
616int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
617{
618 return -EOPNOTSUPP;
619}
620
621int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
622 union kvmppc_one_reg *val)
623{
624 int r = 0;
625 long int i;
626
627 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
628 if (r == -EINVAL) {
629 r = 0;
630 switch (id) {
631 case KVM_REG_PPC_DAR:
632 *val = get_reg_val(id, kvmppc_get_dar(vcpu));
633 break;
634 case KVM_REG_PPC_DSISR:
635 *val = get_reg_val(id, kvmppc_get_dsisr(vcpu));
636 break;
637 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
638 i = id - KVM_REG_PPC_FPR0;
639 *val = get_reg_val(id, kvmppc_get_fpr(vcpu, i));
640 break;
641 case KVM_REG_PPC_FPSCR:
642 *val = get_reg_val(id, kvmppc_get_fpscr(vcpu));
643 break;
644#ifdef CONFIG_VSX
645 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
646 if (cpu_has_feature(CPU_FTR_VSX)) {
647 i = id - KVM_REG_PPC_VSR0;
648 val->vsxval[0] = kvmppc_get_vsx_fpr(vcpu, i, 0);
649 val->vsxval[1] = kvmppc_get_vsx_fpr(vcpu, i, 1);
650 } else {
651 r = -ENXIO;
652 }
653 break;
654#endif /* CONFIG_VSX */
655 case KVM_REG_PPC_DEBUG_INST:
656 *val = get_reg_val(id, INS_TW);
657 break;
658#ifdef CONFIG_KVM_XICS
659 case KVM_REG_PPC_ICP_STATE:
660 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
661 r = -ENXIO;
662 break;
663 }
664 if (xics_on_xive())
665 *val = get_reg_val(id, kvmppc_xive_get_icp(vcpu));
666 else
667 *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu));
668 break;
669#endif /* CONFIG_KVM_XICS */
670#ifdef CONFIG_KVM_XIVE
671 case KVM_REG_PPC_VP_STATE:
672 if (!vcpu->arch.xive_vcpu) {
673 r = -ENXIO;
674 break;
675 }
676 if (xive_enabled())
677 r = kvmppc_xive_native_get_vp(vcpu, val);
678 else
679 r = -ENXIO;
680 break;
681#endif /* CONFIG_KVM_XIVE */
682 case KVM_REG_PPC_FSCR:
683 *val = get_reg_val(id, vcpu->arch.fscr);
684 break;
685 case KVM_REG_PPC_TAR:
686 *val = get_reg_val(id, kvmppc_get_tar(vcpu));
687 break;
688 case KVM_REG_PPC_EBBHR:
689 *val = get_reg_val(id, kvmppc_get_ebbhr(vcpu));
690 break;
691 case KVM_REG_PPC_EBBRR:
692 *val = get_reg_val(id, kvmppc_get_ebbrr(vcpu));
693 break;
694 case KVM_REG_PPC_BESCR:
695 *val = get_reg_val(id, kvmppc_get_bescr(vcpu));
696 break;
697 case KVM_REG_PPC_IC:
698 *val = get_reg_val(id, kvmppc_get_ic(vcpu));
699 break;
700 default:
701 r = -EINVAL;
702 break;
703 }
704 }
705
706 return r;
707}
708
709int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
710 union kvmppc_one_reg *val)
711{
712 int r = 0;
713 long int i;
714
715 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
716 if (r == -EINVAL) {
717 r = 0;
718 switch (id) {
719 case KVM_REG_PPC_DAR:
720 kvmppc_set_dar(vcpu, set_reg_val(id, *val));
721 break;
722 case KVM_REG_PPC_DSISR:
723 kvmppc_set_dsisr(vcpu, set_reg_val(id, *val));
724 break;
725 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
726 i = id - KVM_REG_PPC_FPR0;
727 kvmppc_set_fpr(vcpu, i, set_reg_val(id, *val));
728 break;
729 case KVM_REG_PPC_FPSCR:
730 vcpu->arch.fp.fpscr = set_reg_val(id, *val);
731 break;
732#ifdef CONFIG_VSX
733 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
734 if (cpu_has_feature(CPU_FTR_VSX)) {
735 i = id - KVM_REG_PPC_VSR0;
736 kvmppc_set_vsx_fpr(vcpu, i, 0, val->vsxval[0]);
737 kvmppc_set_vsx_fpr(vcpu, i, 1, val->vsxval[1]);
738 } else {
739 r = -ENXIO;
740 }
741 break;
742#endif /* CONFIG_VSX */
743#ifdef CONFIG_KVM_XICS
744 case KVM_REG_PPC_ICP_STATE:
745 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
746 r = -ENXIO;
747 break;
748 }
749 if (xics_on_xive())
750 r = kvmppc_xive_set_icp(vcpu, set_reg_val(id, *val));
751 else
752 r = kvmppc_xics_set_icp(vcpu, set_reg_val(id, *val));
753 break;
754#endif /* CONFIG_KVM_XICS */
755#ifdef CONFIG_KVM_XIVE
756 case KVM_REG_PPC_VP_STATE:
757 if (!vcpu->arch.xive_vcpu) {
758 r = -ENXIO;
759 break;
760 }
761 if (xive_enabled())
762 r = kvmppc_xive_native_set_vp(vcpu, val);
763 else
764 r = -ENXIO;
765 break;
766#endif /* CONFIG_KVM_XIVE */
767 case KVM_REG_PPC_FSCR:
768 kvmppc_set_fpscr(vcpu, set_reg_val(id, *val));
769 break;
770 case KVM_REG_PPC_TAR:
771 kvmppc_set_tar(vcpu, set_reg_val(id, *val));
772 break;
773 case KVM_REG_PPC_EBBHR:
774 kvmppc_set_ebbhr(vcpu, set_reg_val(id, *val));
775 break;
776 case KVM_REG_PPC_EBBRR:
777 kvmppc_set_ebbrr(vcpu, set_reg_val(id, *val));
778 break;
779 case KVM_REG_PPC_BESCR:
780 kvmppc_set_bescr(vcpu, set_reg_val(id, *val));
781 break;
782 case KVM_REG_PPC_IC:
783 kvmppc_set_ic(vcpu, set_reg_val(id, *val));
784 break;
785 default:
786 r = -EINVAL;
787 break;
788 }
789 }
790
791 return r;
792}
793
794void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
795{
796 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
797}
798
799void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
800{
801 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
802}
803
804void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
805{
806 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
807}
808EXPORT_SYMBOL_GPL(kvmppc_set_msr);
809
810int kvmppc_vcpu_run(struct kvm_vcpu *vcpu)
811{
812 return vcpu->kvm->arch.kvm_ops->vcpu_run(vcpu);
813}
814
815int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
816 struct kvm_translation *tr)
817{
818 return 0;
819}
820
821int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
822 struct kvm_guest_debug *dbg)
823{
824 vcpu_load(vcpu);
825 vcpu->guest_debug = dbg->control;
826 vcpu_put(vcpu);
827 return 0;
828}
829
830void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
831{
832 kvmppc_core_queue_dec(vcpu);
833 kvm_vcpu_kick(vcpu);
834}
835
836int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu)
837{
838 return vcpu->kvm->arch.kvm_ops->vcpu_create(vcpu);
839}
840
841void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
842{
843 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
844}
845
846int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
847{
848 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
849}
850
851void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot)
852{
853
854}
855
856int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
857{
858 return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
859}
860
861void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
862{
863 kvm->arch.kvm_ops->free_memslot(slot);
864}
865
866void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
867{
868 kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
869}
870
871int kvmppc_core_prepare_memory_region(struct kvm *kvm,
872 const struct kvm_memory_slot *old,
873 struct kvm_memory_slot *new,
874 enum kvm_mr_change change)
875{
876 return kvm->arch.kvm_ops->prepare_memory_region(kvm, old, new, change);
877}
878
879void kvmppc_core_commit_memory_region(struct kvm *kvm,
880 struct kvm_memory_slot *old,
881 const struct kvm_memory_slot *new,
882 enum kvm_mr_change change)
883{
884 kvm->arch.kvm_ops->commit_memory_region(kvm, old, new, change);
885}
886
887bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range)
888{
889 return kvm->arch.kvm_ops->unmap_gfn_range(kvm, range);
890}
891
892bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
893{
894 return kvm->arch.kvm_ops->age_gfn(kvm, range);
895}
896
897bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
898{
899 return kvm->arch.kvm_ops->test_age_gfn(kvm, range);
900}
901
902bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
903{
904 return kvm->arch.kvm_ops->set_spte_gfn(kvm, range);
905}
906
907int kvmppc_core_init_vm(struct kvm *kvm)
908{
909
910#ifdef CONFIG_PPC64
911 INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables);
912 INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
913 mutex_init(&kvm->arch.rtas_token_lock);
914#endif
915
916 return kvm->arch.kvm_ops->init_vm(kvm);
917}
918
919void kvmppc_core_destroy_vm(struct kvm *kvm)
920{
921 kvm->arch.kvm_ops->destroy_vm(kvm);
922
923#ifdef CONFIG_PPC64
924 kvmppc_rtas_tokens_free(kvm);
925 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
926#endif
927
928#ifdef CONFIG_KVM_XICS
929 /*
930 * Free the XIVE and XICS devices which are not directly freed by the
931 * device 'release' method
932 */
933 kfree(kvm->arch.xive_devices.native);
934 kvm->arch.xive_devices.native = NULL;
935 kfree(kvm->arch.xive_devices.xics_on_xive);
936 kvm->arch.xive_devices.xics_on_xive = NULL;
937 kfree(kvm->arch.xics_device);
938 kvm->arch.xics_device = NULL;
939#endif /* CONFIG_KVM_XICS */
940}
941
942int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
943{
944 unsigned long size = kvmppc_get_gpr(vcpu, 4);
945 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
946 u64 buf;
947 int srcu_idx;
948 int ret;
949
950 if (!is_power_of_2(size) || (size > sizeof(buf)))
951 return H_TOO_HARD;
952
953 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
954 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
955 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
956 if (ret != 0)
957 return H_TOO_HARD;
958
959 switch (size) {
960 case 1:
961 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf);
962 break;
963
964 case 2:
965 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf));
966 break;
967
968 case 4:
969 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf));
970 break;
971
972 case 8:
973 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf));
974 break;
975
976 default:
977 BUG();
978 }
979
980 return H_SUCCESS;
981}
982EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load);
983
984int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
985{
986 unsigned long size = kvmppc_get_gpr(vcpu, 4);
987 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
988 unsigned long val = kvmppc_get_gpr(vcpu, 6);
989 u64 buf;
990 int srcu_idx;
991 int ret;
992
993 switch (size) {
994 case 1:
995 *(u8 *)&buf = val;
996 break;
997
998 case 2:
999 *(__be16 *)&buf = cpu_to_be16(val);
1000 break;
1001
1002 case 4:
1003 *(__be32 *)&buf = cpu_to_be32(val);
1004 break;
1005
1006 case 8:
1007 *(__be64 *)&buf = cpu_to_be64(val);
1008 break;
1009
1010 default:
1011 return H_TOO_HARD;
1012 }
1013
1014 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
1015 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
1016 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
1017 if (ret != 0)
1018 return H_TOO_HARD;
1019
1020 return H_SUCCESS;
1021}
1022EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store);
1023
1024int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
1025{
1026 return kvm->arch.kvm_ops->hcall_implemented(hcall);
1027}
1028
1029#ifdef CONFIG_KVM_XICS
1030int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
1031 bool line_status)
1032{
1033 if (xics_on_xive())
1034 return kvmppc_xive_set_irq(kvm, irq_source_id, irq, level,
1035 line_status);
1036 else
1037 return kvmppc_xics_set_irq(kvm, irq_source_id, irq, level,
1038 line_status);
1039}
1040
1041int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *irq_entry,
1042 struct kvm *kvm, int irq_source_id,
1043 int level, bool line_status)
1044{
1045 return kvm_set_irq(kvm, irq_source_id, irq_entry->gsi,
1046 level, line_status);
1047}
1048static int kvmppc_book3s_set_irq(struct kvm_kernel_irq_routing_entry *e,
1049 struct kvm *kvm, int irq_source_id, int level,
1050 bool line_status)
1051{
1052 return kvm_set_irq(kvm, irq_source_id, e->gsi, level, line_status);
1053}
1054
1055int kvm_irq_map_gsi(struct kvm *kvm,
1056 struct kvm_kernel_irq_routing_entry *entries, int gsi)
1057{
1058 entries->gsi = gsi;
1059 entries->type = KVM_IRQ_ROUTING_IRQCHIP;
1060 entries->set = kvmppc_book3s_set_irq;
1061 entries->irqchip.irqchip = 0;
1062 entries->irqchip.pin = gsi;
1063 return 1;
1064}
1065
1066int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin)
1067{
1068 return pin;
1069}
1070
1071#endif /* CONFIG_KVM_XICS */
1072
1073static int kvmppc_book3s_init(void)
1074{
1075 int r;
1076
1077 r = kvm_init(sizeof(struct kvm_vcpu), 0, THIS_MODULE);
1078 if (r)
1079 return r;
1080#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1081 r = kvmppc_book3s_init_pr();
1082#endif
1083
1084#ifdef CONFIG_KVM_XICS
1085#ifdef CONFIG_KVM_XIVE
1086 if (xics_on_xive()) {
1087 kvm_register_device_ops(&kvm_xive_ops, KVM_DEV_TYPE_XICS);
1088 if (kvmppc_xive_native_supported())
1089 kvm_register_device_ops(&kvm_xive_native_ops,
1090 KVM_DEV_TYPE_XIVE);
1091 } else
1092#endif
1093 kvm_register_device_ops(&kvm_xics_ops, KVM_DEV_TYPE_XICS);
1094#endif
1095 return r;
1096}
1097
1098static void kvmppc_book3s_exit(void)
1099{
1100#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1101 kvmppc_book3s_exit_pr();
1102#endif
1103 kvm_exit();
1104}
1105
1106module_init(kvmppc_book3s_init);
1107module_exit(kvmppc_book3s_exit);
1108
1109/* On 32bit this is our one and only kernel module */
1110#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1111MODULE_ALIAS_MISCDEV(KVM_MINOR);
1112MODULE_ALIAS("devname:kvm");
1113#endif
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
46struct 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
69void 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}
78EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
79
80static 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
87static 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
98static 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
124void 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
133static 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
161void 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
173void 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}
183EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
184
185void 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}
190EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
191
192void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
193{
194 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
195}
196EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
197
198int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
199{
200 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
201}
202EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
203
204void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
205{
206 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
207}
208EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
209
210void 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
221void 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
227void 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
235void 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
244static 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 */
325static 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
339int 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}
367EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
368
369kvm_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 kvm_pfn_t pfn;
383
384 pfn = (kvm_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}
393EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
394
395int 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
425int 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}
440EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
441
442int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
443{
444 return 0;
445}
446
447int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
448{
449 return 0;
450}
451
452void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
453{
454}
455
456int 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
462int 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
468int 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
496int 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
523int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
524{
525 return -ENOTSUPP;
526}
527
528int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
529{
530 return -ENOTSUPP;
531}
532
533int 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
609int 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
683void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
684{
685 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
686}
687
688void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
689{
690 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
691}
692
693void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
694{
695 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
696}
697EXPORT_SYMBOL_GPL(kvmppc_set_msr);
698
699int 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
704int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
705 struct kvm_translation *tr)
706{
707 return 0;
708}
709
710int 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
717void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
718{
719 kvmppc_core_queue_dec(vcpu);
720 kvm_vcpu_kick(vcpu);
721}
722
723struct 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
728void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
729{
730 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
731}
732
733int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
734{
735 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
736}
737
738int 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
743void 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
749int 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
755void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
756{
757 kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
758}
759
760int 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
767void 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
775int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
776{
777 return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
778}
779EXPORT_SYMBOL_GPL(kvm_unmap_hva);
780
781int 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
786int 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
791int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
792{
793 return kvm->arch.kvm_ops->test_age_hva(kvm, hva);
794}
795
796void 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
801void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
802{
803 vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
804}
805
806int kvmppc_core_init_vm(struct kvm *kvm)
807{
808
809#ifdef CONFIG_PPC64
810 INIT_LIST_HEAD_RCU(&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
817void 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
827int 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 srcu_idx;
833 int ret;
834
835 if (!is_power_of_2(size) || (size > sizeof(buf)))
836 return H_TOO_HARD;
837
838 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
839 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
840 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
841 if (ret != 0)
842 return H_TOO_HARD;
843
844 switch (size) {
845 case 1:
846 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf);
847 break;
848
849 case 2:
850 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf));
851 break;
852
853 case 4:
854 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf));
855 break;
856
857 case 8:
858 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf));
859 break;
860
861 default:
862 BUG();
863 }
864
865 return H_SUCCESS;
866}
867EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load);
868
869int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
870{
871 unsigned long size = kvmppc_get_gpr(vcpu, 4);
872 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
873 unsigned long val = kvmppc_get_gpr(vcpu, 6);
874 u64 buf;
875 int srcu_idx;
876 int ret;
877
878 switch (size) {
879 case 1:
880 *(u8 *)&buf = val;
881 break;
882
883 case 2:
884 *(__be16 *)&buf = cpu_to_be16(val);
885 break;
886
887 case 4:
888 *(__be32 *)&buf = cpu_to_be32(val);
889 break;
890
891 case 8:
892 *(__be64 *)&buf = cpu_to_be64(val);
893 break;
894
895 default:
896 return H_TOO_HARD;
897 }
898
899 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
900 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
901 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
902 if (ret != 0)
903 return H_TOO_HARD;
904
905 return H_SUCCESS;
906}
907EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store);
908
909int kvmppc_core_check_processor_compat(void)
910{
911 /*
912 * We always return 0 for book3s. We check
913 * for compatibility while loading the HV
914 * or PR module
915 */
916 return 0;
917}
918
919int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
920{
921 return kvm->arch.kvm_ops->hcall_implemented(hcall);
922}
923
924static int kvmppc_book3s_init(void)
925{
926 int r;
927
928 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
929 if (r)
930 return r;
931#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
932 r = kvmppc_book3s_init_pr();
933#endif
934 return r;
935
936}
937
938static void kvmppc_book3s_exit(void)
939{
940#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
941 kvmppc_book3s_exit_pr();
942#endif
943 kvm_exit();
944}
945
946module_init(kvmppc_book3s_init);
947module_exit(kvmppc_book3s_exit);
948
949/* On 32bit this is our one and only kernel module */
950#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
951MODULE_ALIAS_MISCDEV(KVM_MINOR);
952MODULE_ALIAS("devname:kvm");
953#endif