tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
47struct 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
78void 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}
87EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
88
89static 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
96static 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
107static 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
133void 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
142static 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
170void 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
182void 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}
192EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
193
194void 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}
199EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
200
201void 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
207void 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
213void 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
219void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
220{
221 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
222}
223EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
224
225int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
226{
227 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
228}
229EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
230
231void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
232{
233 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
234}
235EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
236
237void 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
248void 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
254void 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}
261EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage); /* used by kvm_hv */
262
263void 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
272static 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 */
353static 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
367int 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}
395EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
396
397kvm_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}
421EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
422
423int 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
453int 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}
468EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
469
470int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
471{
472 return 0;
473}
474
475int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
476{
477 return 0;
478}
479
480void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
481{
482}
483
484int 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
490int 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
496int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
497{
498 int i;
499
500 regs->pc = kvmppc_get_pc(vcpu);
501 regs->cr = kvmppc_get_cr(vcpu);
502 regs->ctr = kvmppc_get_ctr(vcpu);
503 regs->lr = kvmppc_get_lr(vcpu);
504 regs->xer = kvmppc_get_xer(vcpu);
505 regs->msr = kvmppc_get_msr(vcpu);
506 regs->srr0 = kvmppc_get_srr0(vcpu);
507 regs->srr1 = kvmppc_get_srr1(vcpu);
508 regs->pid = vcpu->arch.pid;
509 regs->sprg0 = kvmppc_get_sprg0(vcpu);
510 regs->sprg1 = kvmppc_get_sprg1(vcpu);
511 regs->sprg2 = kvmppc_get_sprg2(vcpu);
512 regs->sprg3 = kvmppc_get_sprg3(vcpu);
513 regs->sprg4 = kvmppc_get_sprg4(vcpu);
514 regs->sprg5 = kvmppc_get_sprg5(vcpu);
515 regs->sprg6 = kvmppc_get_sprg6(vcpu);
516 regs->sprg7 = kvmppc_get_sprg7(vcpu);
517
518 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
519 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
520
521 return 0;
522}
523
524int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
525{
526 int i;
527
528 kvmppc_set_pc(vcpu, regs->pc);
529 kvmppc_set_cr(vcpu, regs->cr);
530 kvmppc_set_ctr(vcpu, regs->ctr);
531 kvmppc_set_lr(vcpu, regs->lr);
532 kvmppc_set_xer(vcpu, regs->xer);
533 kvmppc_set_msr(vcpu, regs->msr);
534 kvmppc_set_srr0(vcpu, regs->srr0);
535 kvmppc_set_srr1(vcpu, regs->srr1);
536 kvmppc_set_sprg0(vcpu, regs->sprg0);
537 kvmppc_set_sprg1(vcpu, regs->sprg1);
538 kvmppc_set_sprg2(vcpu, regs->sprg2);
539 kvmppc_set_sprg3(vcpu, regs->sprg3);
540 kvmppc_set_sprg4(vcpu, regs->sprg4);
541 kvmppc_set_sprg5(vcpu, regs->sprg5);
542 kvmppc_set_sprg6(vcpu, regs->sprg6);
543 kvmppc_set_sprg7(vcpu, regs->sprg7);
544
545 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
546 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
547
548 return 0;
549}
550
551int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
552{
553 return -ENOTSUPP;
554}
555
556int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
557{
558 return -ENOTSUPP;
559}
560
561int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
562 union kvmppc_one_reg *val)
563{
564 int r = 0;
565 long int i;
566
567 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
568 if (r == -EINVAL) {
569 r = 0;
570 switch (id) {
571 case KVM_REG_PPC_DAR:
572 *val = get_reg_val(id, kvmppc_get_dar(vcpu));
573 break;
574 case KVM_REG_PPC_DSISR:
575 *val = get_reg_val(id, kvmppc_get_dsisr(vcpu));
576 break;
577 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
578 i = id - KVM_REG_PPC_FPR0;
579 *val = get_reg_val(id, VCPU_FPR(vcpu, i));
580 break;
581 case KVM_REG_PPC_FPSCR:
582 *val = get_reg_val(id, vcpu->arch.fp.fpscr);
583 break;
584#ifdef CONFIG_VSX
585 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
586 if (cpu_has_feature(CPU_FTR_VSX)) {
587 i = id - KVM_REG_PPC_VSR0;
588 val->vsxval[0] = vcpu->arch.fp.fpr[i][0];
589 val->vsxval[1] = vcpu->arch.fp.fpr[i][1];
590 } else {
591 r = -ENXIO;
592 }
593 break;
594#endif /* CONFIG_VSX */
595 case KVM_REG_PPC_DEBUG_INST:
596 *val = get_reg_val(id, INS_TW);
597 break;
598#ifdef CONFIG_KVM_XICS
599 case KVM_REG_PPC_ICP_STATE:
600 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
601 r = -ENXIO;
602 break;
603 }
604 if (xive_enabled())
605 *val = get_reg_val(id, kvmppc_xive_get_icp(vcpu));
606 else
607 *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu));
608 break;
609#endif /* CONFIG_KVM_XICS */
610 case KVM_REG_PPC_FSCR:
611 *val = get_reg_val(id, vcpu->arch.fscr);
612 break;
613 case KVM_REG_PPC_TAR:
614 *val = get_reg_val(id, vcpu->arch.tar);
615 break;
616 case KVM_REG_PPC_EBBHR:
617 *val = get_reg_val(id, vcpu->arch.ebbhr);
618 break;
619 case KVM_REG_PPC_EBBRR:
620 *val = get_reg_val(id, vcpu->arch.ebbrr);
621 break;
622 case KVM_REG_PPC_BESCR:
623 *val = get_reg_val(id, vcpu->arch.bescr);
624 break;
625 case KVM_REG_PPC_IC:
626 *val = get_reg_val(id, vcpu->arch.ic);
627 break;
628 default:
629 r = -EINVAL;
630 break;
631 }
632 }
633
634 return r;
635}
636
637int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
638 union kvmppc_one_reg *val)
639{
640 int r = 0;
641 long int i;
642
643 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
644 if (r == -EINVAL) {
645 r = 0;
646 switch (id) {
647 case KVM_REG_PPC_DAR:
648 kvmppc_set_dar(vcpu, set_reg_val(id, *val));
649 break;
650 case KVM_REG_PPC_DSISR:
651 kvmppc_set_dsisr(vcpu, set_reg_val(id, *val));
652 break;
653 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
654 i = id - KVM_REG_PPC_FPR0;
655 VCPU_FPR(vcpu, i) = set_reg_val(id, *val);
656 break;
657 case KVM_REG_PPC_FPSCR:
658 vcpu->arch.fp.fpscr = set_reg_val(id, *val);
659 break;
660#ifdef CONFIG_VSX
661 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
662 if (cpu_has_feature(CPU_FTR_VSX)) {
663 i = id - KVM_REG_PPC_VSR0;
664 vcpu->arch.fp.fpr[i][0] = val->vsxval[0];
665 vcpu->arch.fp.fpr[i][1] = val->vsxval[1];
666 } else {
667 r = -ENXIO;
668 }
669 break;
670#endif /* CONFIG_VSX */
671#ifdef CONFIG_KVM_XICS
672 case KVM_REG_PPC_ICP_STATE:
673 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
674 r = -ENXIO;
675 break;
676 }
677 if (xive_enabled())
678 r = kvmppc_xive_set_icp(vcpu, set_reg_val(id, *val));
679 else
680 r = kvmppc_xics_set_icp(vcpu, set_reg_val(id, *val));
681 break;
682#endif /* CONFIG_KVM_XICS */
683 case KVM_REG_PPC_FSCR:
684 vcpu->arch.fscr = set_reg_val(id, *val);
685 break;
686 case KVM_REG_PPC_TAR:
687 vcpu->arch.tar = set_reg_val(id, *val);
688 break;
689 case KVM_REG_PPC_EBBHR:
690 vcpu->arch.ebbhr = set_reg_val(id, *val);
691 break;
692 case KVM_REG_PPC_EBBRR:
693 vcpu->arch.ebbrr = set_reg_val(id, *val);
694 break;
695 case KVM_REG_PPC_BESCR:
696 vcpu->arch.bescr = set_reg_val(id, *val);
697 break;
698 case KVM_REG_PPC_IC:
699 vcpu->arch.ic = set_reg_val(id, *val);
700 break;
701 default:
702 r = -EINVAL;
703 break;
704 }
705 }
706
707 return r;
708}
709
710void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
711{
712 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
713}
714
715void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
716{
717 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
718}
719
720void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
721{
722 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
723}
724EXPORT_SYMBOL_GPL(kvmppc_set_msr);
725
726int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
727{
728 return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu);
729}
730
731int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
732 struct kvm_translation *tr)
733{
734 return 0;
735}
736
737int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
738 struct kvm_guest_debug *dbg)
739{
740 vcpu->guest_debug = dbg->control;
741 return 0;
742}
743
744void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
745{
746 kvmppc_core_queue_dec(vcpu);
747 kvm_vcpu_kick(vcpu);
748}
749
750struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
751{
752 return kvm->arch.kvm_ops->vcpu_create(kvm, id);
753}
754
755void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
756{
757 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
758}
759
760int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
761{
762 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
763}
764
765int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
766{
767 return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
768}
769
770void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
771 struct kvm_memory_slot *dont)
772{
773 kvm->arch.kvm_ops->free_memslot(free, dont);
774}
775
776int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
777 unsigned long npages)
778{
779 return kvm->arch.kvm_ops->create_memslot(slot, npages);
780}
781
782void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
783{
784 kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
785}
786
787int kvmppc_core_prepare_memory_region(struct kvm *kvm,
788 struct kvm_memory_slot *memslot,
789 const struct kvm_userspace_memory_region *mem)
790{
791 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem);
792}
793
794void kvmppc_core_commit_memory_region(struct kvm *kvm,
795 const struct kvm_userspace_memory_region *mem,
796 const struct kvm_memory_slot *old,
797 const struct kvm_memory_slot *new)
798{
799 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new);
800}
801
802int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
803{
804 return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
805}
806EXPORT_SYMBOL_GPL(kvm_unmap_hva);
807
808int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
809{
810 return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
811}
812
813int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end)
814{
815 return kvm->arch.kvm_ops->age_hva(kvm, start, end);
816}
817
818int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
819{
820 return kvm->arch.kvm_ops->test_age_hva(kvm, hva);
821}
822
823void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
824{
825 kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte);
826}
827
828void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
829{
830 vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
831}
832
833int kvmppc_core_init_vm(struct kvm *kvm)
834{
835
836#ifdef CONFIG_PPC64
837 INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables);
838 INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
839#endif
840
841 return kvm->arch.kvm_ops->init_vm(kvm);
842}
843
844void kvmppc_core_destroy_vm(struct kvm *kvm)
845{
846 kvm->arch.kvm_ops->destroy_vm(kvm);
847
848#ifdef CONFIG_PPC64
849 kvmppc_rtas_tokens_free(kvm);
850 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
851#endif
852}
853
854int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
855{
856 unsigned long size = kvmppc_get_gpr(vcpu, 4);
857 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
858 u64 buf;
859 int srcu_idx;
860 int ret;
861
862 if (!is_power_of_2(size) || (size > sizeof(buf)))
863 return H_TOO_HARD;
864
865 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
866 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
867 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
868 if (ret != 0)
869 return H_TOO_HARD;
870
871 switch (size) {
872 case 1:
873 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf);
874 break;
875
876 case 2:
877 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf));
878 break;
879
880 case 4:
881 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf));
882 break;
883
884 case 8:
885 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf));
886 break;
887
888 default:
889 BUG();
890 }
891
892 return H_SUCCESS;
893}
894EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load);
895
896int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
897{
898 unsigned long size = kvmppc_get_gpr(vcpu, 4);
899 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
900 unsigned long val = kvmppc_get_gpr(vcpu, 6);
901 u64 buf;
902 int srcu_idx;
903 int ret;
904
905 switch (size) {
906 case 1:
907 *(u8 *)&buf = val;
908 break;
909
910 case 2:
911 *(__be16 *)&buf = cpu_to_be16(val);
912 break;
913
914 case 4:
915 *(__be32 *)&buf = cpu_to_be32(val);
916 break;
917
918 case 8:
919 *(__be64 *)&buf = cpu_to_be64(val);
920 break;
921
922 default:
923 return H_TOO_HARD;
924 }
925
926 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
927 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
928 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
929 if (ret != 0)
930 return H_TOO_HARD;
931
932 return H_SUCCESS;
933}
934EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store);
935
936int kvmppc_core_check_processor_compat(void)
937{
938 /*
939 * We always return 0 for book3s. We check
940 * for compatibility while loading the HV
941 * or PR module
942 */
943 return 0;
944}
945
946int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
947{
948 return kvm->arch.kvm_ops->hcall_implemented(hcall);
949}
950
951#ifdef CONFIG_KVM_XICS
952int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
953 bool line_status)
954{
955 if (xive_enabled())
956 return kvmppc_xive_set_irq(kvm, irq_source_id, irq, level,
957 line_status);
958 else
959 return kvmppc_xics_set_irq(kvm, irq_source_id, irq, level,
960 line_status);
961}
962
963int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *irq_entry,
964 struct kvm *kvm, int irq_source_id,
965 int level, bool line_status)
966{
967 return kvm_set_irq(kvm, irq_source_id, irq_entry->gsi,
968 level, line_status);
969}
970static int kvmppc_book3s_set_irq(struct kvm_kernel_irq_routing_entry *e,
971 struct kvm *kvm, int irq_source_id, int level,
972 bool line_status)
973{
974 return kvm_set_irq(kvm, irq_source_id, e->gsi, level, line_status);
975}
976
977int kvm_irq_map_gsi(struct kvm *kvm,
978 struct kvm_kernel_irq_routing_entry *entries, int gsi)
979{
980 entries->gsi = gsi;
981 entries->type = KVM_IRQ_ROUTING_IRQCHIP;
982 entries->set = kvmppc_book3s_set_irq;
983 entries->irqchip.irqchip = 0;
984 entries->irqchip.pin = gsi;
985 return 1;
986}
987
988int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin)
989{
990 return pin;
991}
992
993#endif /* CONFIG_KVM_XICS */
994
995static int kvmppc_book3s_init(void)
996{
997 int r;
998
999 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
1000 if (r)
1001 return r;
1002#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1003 r = kvmppc_book3s_init_pr();
1004#endif
1005
1006#ifdef CONFIG_KVM_XICS
1007#ifdef CONFIG_KVM_XIVE
1008 if (xive_enabled()) {
1009 kvmppc_xive_init_module();
1010 kvm_register_device_ops(&kvm_xive_ops, KVM_DEV_TYPE_XICS);
1011 } else
1012#endif
1013 kvm_register_device_ops(&kvm_xics_ops, KVM_DEV_TYPE_XICS);
1014#endif
1015 return r;
1016}
1017
1018static void kvmppc_book3s_exit(void)
1019{
1020#ifdef CONFIG_KVM_XICS
1021 if (xive_enabled())
1022 kvmppc_xive_exit_module();
1023#endif
1024#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1025 kvmppc_book3s_exit_pr();
1026#endif
1027 kvm_exit();
1028}
1029
1030module_init(kvmppc_book3s_init);
1031module_exit(kvmppc_book3s_exit);
1032
1033/* On 32bit this is our one and only kernel module */
1034#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1035MODULE_ALIAS_MISCDEV(KVM_MINOR);
1036MODULE_ALIAS("devname:kvm");
1037#endif