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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / arch / powerpc / kvm / book3s.c
blob234531d1bee1e24052e23c100b3856d6c55fd590
1 /*
2 * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved.
3 *
4 * Authors:
5 * Alexander Graf <agraf@suse.de>
6 * Kevin Wolf <mail@kevin-wolf.de>
7 *
8 * Description:
9 * This file is derived from arch/powerpc/kvm/44x.c,
10 * by Hollis Blanchard <hollisb@us.ibm.com>.
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License, version 2, as
14 * published by the Free Software Foundation.
15 */
16
17 #include <linux/kvm_host.h>
18 #include <linux/err.h>
19 #include <linux/export.h>
20 #include <linux/slab.h>
21 #include <linux/module.h>
22 #include <linux/miscdevice.h>
23 #include <linux/gfp.h>
24 #include <linux/sched.h>
25 #include <linux/vmalloc.h>
26 #include <linux/highmem.h>
27
28 #include <asm/reg.h>
29 #include <asm/cputable.h>
30 #include <asm/cacheflush.h>
31 #include <asm/tlbflush.h>
32 #include <linux/uaccess.h>
33 #include <asm/io.h>
34 #include <asm/kvm_ppc.h>
35 #include <asm/kvm_book3s.h>
36 #include <asm/mmu_context.h>
37 #include <asm/page.h>
38 #include <asm/xive.h>
39
40 #include "book3s.h"
41 #include "trace.h"
42
43 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
44
45 /* #define EXIT_DEBUG */
46
47 struct kvm_stats_debugfs_item debugfs_entries[] = {
48 { "exits", VCPU_STAT(sum_exits) },
49 { "mmio", VCPU_STAT(mmio_exits) },
50 { "sig", VCPU_STAT(signal_exits) },
51 { "sysc", VCPU_STAT(syscall_exits) },
52 { "inst_emu", VCPU_STAT(emulated_inst_exits) },
53 { "dec", VCPU_STAT(dec_exits) },
54 { "ext_intr", VCPU_STAT(ext_intr_exits) },
55 { "queue_intr", VCPU_STAT(queue_intr) },
56 { "halt_poll_success_ns", VCPU_STAT(halt_poll_success_ns) },
57 { "halt_poll_fail_ns", VCPU_STAT(halt_poll_fail_ns) },
58 { "halt_wait_ns", VCPU_STAT(halt_wait_ns) },
59 { "halt_successful_poll", VCPU_STAT(halt_successful_poll), },
60 { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll), },
61 { "halt_successful_wait", VCPU_STAT(halt_successful_wait) },
62 { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) },
63 { "halt_wakeup", VCPU_STAT(halt_wakeup) },
64 { "pf_storage", VCPU_STAT(pf_storage) },
65 { "sp_storage", VCPU_STAT(sp_storage) },
66 { "pf_instruc", VCPU_STAT(pf_instruc) },
67 { "sp_instruc", VCPU_STAT(sp_instruc) },
68 { "ld", VCPU_STAT(ld) },
69 { "ld_slow", VCPU_STAT(ld_slow) },
70 { "st", VCPU_STAT(st) },
71 { "st_slow", VCPU_STAT(st_slow) },
72 { "pthru_all", VCPU_STAT(pthru_all) },
73 { "pthru_host", VCPU_STAT(pthru_host) },
74 { "pthru_bad_aff", VCPU_STAT(pthru_bad_aff) },
75 { NULL }
76 };
77
78 void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
79 {
80 if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
81 ulong pc = kvmppc_get_pc(vcpu);
82 if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
83 kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
84 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
85 }
86 }
87 EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
88
89 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
90 {
91 if (!is_kvmppc_hv_enabled(vcpu->kvm))
92 return to_book3s(vcpu)->hior;
93 return 0;
94 }
95
96 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
97 unsigned long pending_now, unsigned long old_pending)
98 {
99 if (is_kvmppc_hv_enabled(vcpu->kvm))
100 return;
101 if (pending_now)
102 kvmppc_set_int_pending(vcpu, 1);
103 else if (old_pending)
104 kvmppc_set_int_pending(vcpu, 0);
105 }
106
107 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
108 {
109 ulong crit_raw;
110 ulong crit_r1;
111 bool crit;
112
113 if (is_kvmppc_hv_enabled(vcpu->kvm))
114 return false;
115
116 crit_raw = kvmppc_get_critical(vcpu);
117 crit_r1 = kvmppc_get_gpr(vcpu, 1);
118
119 /* Truncate crit indicators in 32 bit mode */
120 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
121 crit_raw &= 0xffffffff;
122 crit_r1 &= 0xffffffff;
123 }
124
125 /* Critical section when crit == r1 */
126 crit = (crit_raw == crit_r1);
127 /* ... and we're in supervisor mode */
128 crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR);
129
130 return crit;
131 }
132
133 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
134 {
135 kvmppc_unfixup_split_real(vcpu);
136 kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu));
137 kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags);
138 kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
139 vcpu->arch.mmu.reset_msr(vcpu);
140 }
141
142 static int kvmppc_book3s_vec2irqprio(unsigned int vec)
143 {
144 unsigned int prio;
145
146 switch (vec) {
147 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break;
148 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break;
149 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break;
150 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break;
151 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break;
152 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break;
153 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break;
154 case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break;
155 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break;
156 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break;
157 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break;
158 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break;
159 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break;
160 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break;
161 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break;
162 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break;
163 case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; break;
164 default: prio = BOOK3S_IRQPRIO_MAX; break;
165 }
166
167 return prio;
168 }
169
170 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
171 unsigned int vec)
172 {
173 unsigned long old_pending = vcpu->arch.pending_exceptions;
174
175 clear_bit(kvmppc_book3s_vec2irqprio(vec),
176 &vcpu->arch.pending_exceptions);
177
178 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
179 old_pending);
180 }
181
182 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
183 {
184 vcpu->stat.queue_intr++;
185
186 set_bit(kvmppc_book3s_vec2irqprio(vec),
187 &vcpu->arch.pending_exceptions);
188 #ifdef EXIT_DEBUG
189 printk(KERN_INFO "Queueing interrupt %x\n", vec);
190 #endif
191 }
192 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
193
194 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
195 {
196 /* might as well deliver this straight away */
197 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
198 }
199 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
200
201 void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu)
202 {
203 /* might as well deliver this straight away */
204 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, 0);
205 }
206
207 void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu)
208 {
209 /* might as well deliver this straight away */
210 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_ALTIVEC, 0);
211 }
212
213 void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu)
214 {
215 /* might as well deliver this straight away */
216 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_VSX, 0);
217 }
218
219 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
220 {
221 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
222 }
223 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
224
225 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
226 {
227 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
228 }
229 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
230
231 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
232 {
233 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
234 }
235 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
236
237 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
238 struct kvm_interrupt *irq)
239 {
240 unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL;
241
242 if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
243 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL;
244
245 kvmppc_book3s_queue_irqprio(vcpu, vec);
246 }
247
248 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
249 {
250 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
251 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);
252 }
253
254 void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar,
255 ulong flags)
256 {
257 kvmppc_set_dar(vcpu, dar);
258 kvmppc_set_dsisr(vcpu, flags);
259 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE);
260 }
261 EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage); /* used by kvm_hv */
262
263 void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags)
264 {
265 u64 msr = kvmppc_get_msr(vcpu);
266 msr &= ~(SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
267 msr |= flags & (SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
268 kvmppc_set_msr_fast(vcpu, msr);
269 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE);
270 }
271
272 static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu,
273 unsigned int priority)
274 {
275 int deliver = 1;
276 int vec = 0;
277 bool crit = kvmppc_critical_section(vcpu);
278
279 switch (priority) {
280 case BOOK3S_IRQPRIO_DECREMENTER:
281 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
282 vec = BOOK3S_INTERRUPT_DECREMENTER;
283 break;
284 case BOOK3S_IRQPRIO_EXTERNAL:
285 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
286 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
287 vec = BOOK3S_INTERRUPT_EXTERNAL;
288 break;
289 case BOOK3S_IRQPRIO_SYSTEM_RESET:
290 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
291 break;
292 case BOOK3S_IRQPRIO_MACHINE_CHECK:
293 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
294 break;
295 case BOOK3S_IRQPRIO_DATA_STORAGE:
296 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
297 break;
298 case BOOK3S_IRQPRIO_INST_STORAGE:
299 vec = BOOK3S_INTERRUPT_INST_STORAGE;
300 break;
301 case BOOK3S_IRQPRIO_DATA_SEGMENT:
302 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
303 break;
304 case BOOK3S_IRQPRIO_INST_SEGMENT:
305 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
306 break;
307 case BOOK3S_IRQPRIO_ALIGNMENT:
308 vec = BOOK3S_INTERRUPT_ALIGNMENT;
309 break;
310 case BOOK3S_IRQPRIO_PROGRAM:
311 vec = BOOK3S_INTERRUPT_PROGRAM;
312 break;
313 case BOOK3S_IRQPRIO_VSX:
314 vec = BOOK3S_INTERRUPT_VSX;
315 break;
316 case BOOK3S_IRQPRIO_ALTIVEC:
317 vec = BOOK3S_INTERRUPT_ALTIVEC;
318 break;
319 case BOOK3S_IRQPRIO_FP_UNAVAIL:
320 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
321 break;
322 case BOOK3S_IRQPRIO_SYSCALL:
323 vec = BOOK3S_INTERRUPT_SYSCALL;
324 break;
325 case BOOK3S_IRQPRIO_DEBUG:
326 vec = BOOK3S_INTERRUPT_TRACE;
327 break;
328 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
329 vec = BOOK3S_INTERRUPT_PERFMON;
330 break;
331 case BOOK3S_IRQPRIO_FAC_UNAVAIL:
332 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL;
333 break;
334 default:
335 deliver = 0;
336 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
337 break;
338 }
339
340 #if 0
341 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
342 #endif
343
344 if (deliver)
345 kvmppc_inject_interrupt(vcpu, vec, 0);
346
347 return deliver;
348 }
349
350 /*
351 * This function determines if an irqprio should be cleared once issued.
352 */
353 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
354 {
355 switch (priority) {
356 case BOOK3S_IRQPRIO_DECREMENTER:
357 /* DEC interrupts get cleared by mtdec */
358 return false;
359 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
360 /* External interrupts get cleared by userspace */
361 return false;
362 }
363
364 return true;
365 }
366
367 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
368 {
369 unsigned long *pending = &vcpu->arch.pending_exceptions;
370 unsigned long old_pending = vcpu->arch.pending_exceptions;
371 unsigned int priority;
372
373 #ifdef EXIT_DEBUG
374 if (vcpu->arch.pending_exceptions)
375 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
376 #endif
377 priority = __ffs(*pending);
378 while (priority < BOOK3S_IRQPRIO_MAX) {
379 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
380 clear_irqprio(vcpu, priority)) {
381 clear_bit(priority, &vcpu->arch.pending_exceptions);
382 break;
383 }
384
385 priority = find_next_bit(pending,
386 BITS_PER_BYTE * sizeof(*pending),
387 priority + 1);
388 }
389
390 /* Tell the guest about our interrupt status */
391 kvmppc_update_int_pending(vcpu, *pending, old_pending);
392
393 return 0;
394 }
395 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
396
397 kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
398 bool *writable)
399 {
400 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
401 gfn_t gfn = gpa >> PAGE_SHIFT;
402
403 if (!(kvmppc_get_msr(vcpu) & MSR_SF))
404 mp_pa = (uint32_t)mp_pa;
405
406 /* Magic page override */
407 gpa &= ~0xFFFULL;
408 if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
409 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
410 kvm_pfn_t pfn;
411
412 pfn = (kvm_pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
413 get_page(pfn_to_page(pfn));
414 if (writable)
415 *writable = true;
416 return pfn;
417 }
418
419 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
420 }
421 EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
422
423 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
424 enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
425 {
426 bool data = (xlid == XLATE_DATA);
427 bool iswrite = (xlrw == XLATE_WRITE);
428 int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
429 int r;
430
431 if (relocated) {
432 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
433 } else {
434 pte->eaddr = eaddr;
435 pte->raddr = eaddr & KVM_PAM;
436 pte->vpage = VSID_REAL | eaddr >> 12;
437 pte->may_read = true;
438 pte->may_write = true;
439 pte->may_execute = true;
440 r = 0;
441
442 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
443 !data) {
444 if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
445 ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
446 pte->raddr &= ~SPLIT_HACK_MASK;
447 }
448 }
449
450 return r;
451 }
452
453 int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type,
454 u32 *inst)
455 {
456 ulong pc = kvmppc_get_pc(vcpu);
457 int r;
458
459 if (type == INST_SC)
460 pc -= 4;
461
462 r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false);
463 if (r == EMULATE_DONE)
464 return r;
465 else
466 return EMULATE_AGAIN;
467 }
468 EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
469
470 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
471 {
472 return 0;
473 }
474
475 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
476 {
477 return 0;
478 }
479
480 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
481 {
482 }
483
484 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
485 struct kvm_sregs *sregs)
486 {
487 int ret;
488
489 vcpu_load(vcpu);
490 ret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
491 vcpu_put(vcpu);
492
493 return ret;
494 }
495
496 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
497 struct kvm_sregs *sregs)
498 {
499 int ret;
500
501 vcpu_load(vcpu);
502 ret = vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
503 vcpu_put(vcpu);
504
505 return ret;
506 }
507
508 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
509 {
510 int i;
511
512 vcpu_load(vcpu);
513
514 regs->pc = kvmppc_get_pc(vcpu);
515 regs->cr = kvmppc_get_cr(vcpu);
516 regs->ctr = kvmppc_get_ctr(vcpu);
517 regs->lr = kvmppc_get_lr(vcpu);
518 regs->xer = kvmppc_get_xer(vcpu);
519 regs->msr = kvmppc_get_msr(vcpu);
520 regs->srr0 = kvmppc_get_srr0(vcpu);
521 regs->srr1 = kvmppc_get_srr1(vcpu);
522 regs->pid = vcpu->arch.pid;
523 regs->sprg0 = kvmppc_get_sprg0(vcpu);
524 regs->sprg1 = kvmppc_get_sprg1(vcpu);
525 regs->sprg2 = kvmppc_get_sprg2(vcpu);
526 regs->sprg3 = kvmppc_get_sprg3(vcpu);
527 regs->sprg4 = kvmppc_get_sprg4(vcpu);
528 regs->sprg5 = kvmppc_get_sprg5(vcpu);
529 regs->sprg6 = kvmppc_get_sprg6(vcpu);
530 regs->sprg7 = kvmppc_get_sprg7(vcpu);
531
532 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
533 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
534
535 vcpu_put(vcpu);
536 return 0;
537 }
538
539 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
540 {
541 int i;
542
543 vcpu_load(vcpu);
544
545 kvmppc_set_pc(vcpu, regs->pc);
546 kvmppc_set_cr(vcpu, regs->cr);
547 kvmppc_set_ctr(vcpu, regs->ctr);
548 kvmppc_set_lr(vcpu, regs->lr);
549 kvmppc_set_xer(vcpu, regs->xer);
550 kvmppc_set_msr(vcpu, regs->msr);
551 kvmppc_set_srr0(vcpu, regs->srr0);
552 kvmppc_set_srr1(vcpu, regs->srr1);
553 kvmppc_set_sprg0(vcpu, regs->sprg0);
554 kvmppc_set_sprg1(vcpu, regs->sprg1);
555 kvmppc_set_sprg2(vcpu, regs->sprg2);
556 kvmppc_set_sprg3(vcpu, regs->sprg3);
557 kvmppc_set_sprg4(vcpu, regs->sprg4);
558 kvmppc_set_sprg5(vcpu, regs->sprg5);
559 kvmppc_set_sprg6(vcpu, regs->sprg6);
560 kvmppc_set_sprg7(vcpu, regs->sprg7);
561
562 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
563 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
564
565 vcpu_put(vcpu);
566 return 0;
567 }
568
569 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
570 {
571 return -ENOTSUPP;
572 }
573
574 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
575 {
576 return -ENOTSUPP;
577 }
578
579 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
580 union kvmppc_one_reg *val)
581 {
582 int r = 0;
583 long int i;
584
585 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
586 if (r == -EINVAL) {
587 r = 0;
588 switch (id) {
589 case KVM_REG_PPC_DAR:
590 *val = get_reg_val(id, kvmppc_get_dar(vcpu));
591 break;
592 case KVM_REG_PPC_DSISR:
593 *val = get_reg_val(id, kvmppc_get_dsisr(vcpu));
594 break;
595 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
596 i = id - KVM_REG_PPC_FPR0;
597 *val = get_reg_val(id, VCPU_FPR(vcpu, i));
598 break;
599 case KVM_REG_PPC_FPSCR:
600 *val = get_reg_val(id, vcpu->arch.fp.fpscr);
601 break;
602 #ifdef CONFIG_VSX
603 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
604 if (cpu_has_feature(CPU_FTR_VSX)) {
605 i = id - KVM_REG_PPC_VSR0;
606 val->vsxval[0] = vcpu->arch.fp.fpr[i][0];
607 val->vsxval[1] = vcpu->arch.fp.fpr[i][1];
608 } else {
609 r = -ENXIO;
610 }
611 break;
612 #endif /* CONFIG_VSX */
613 case KVM_REG_PPC_DEBUG_INST:
614 *val = get_reg_val(id, INS_TW);
615 break;
616 #ifdef CONFIG_KVM_XICS
617 case KVM_REG_PPC_ICP_STATE:
618 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
619 r = -ENXIO;
620 break;
621 }
622 if (xive_enabled())
623 *val = get_reg_val(id, kvmppc_xive_get_icp(vcpu));
624 else
625 *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu));
626 break;
627 #endif /* CONFIG_KVM_XICS */
628 case KVM_REG_PPC_FSCR:
629 *val = get_reg_val(id, vcpu->arch.fscr);
630 break;
631 case KVM_REG_PPC_TAR:
632 *val = get_reg_val(id, vcpu->arch.tar);
633 break;
634 case KVM_REG_PPC_EBBHR:
635 *val = get_reg_val(id, vcpu->arch.ebbhr);
636 break;
637 case KVM_REG_PPC_EBBRR:
638 *val = get_reg_val(id, vcpu->arch.ebbrr);
639 break;
640 case KVM_REG_PPC_BESCR:
641 *val = get_reg_val(id, vcpu->arch.bescr);
642 break;
643 case KVM_REG_PPC_IC:
644 *val = get_reg_val(id, vcpu->arch.ic);
645 break;
646 default:
647 r = -EINVAL;
648 break;
649 }
650 }
651
652 return r;
653 }
654
655 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
656 union kvmppc_one_reg *val)
657 {
658 int r = 0;
659 long int i;
660
661 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
662 if (r == -EINVAL) {
663 r = 0;
664 switch (id) {
665 case KVM_REG_PPC_DAR:
666 kvmppc_set_dar(vcpu, set_reg_val(id, *val));
667 break;
668 case KVM_REG_PPC_DSISR:
669 kvmppc_set_dsisr(vcpu, set_reg_val(id, *val));
670 break;
671 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
672 i = id - KVM_REG_PPC_FPR0;
673 VCPU_FPR(vcpu, i) = set_reg_val(id, *val);
674 break;
675 case KVM_REG_PPC_FPSCR:
676 vcpu->arch.fp.fpscr = set_reg_val(id, *val);
677 break;
678 #ifdef CONFIG_VSX
679 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
680 if (cpu_has_feature(CPU_FTR_VSX)) {
681 i = id - KVM_REG_PPC_VSR0;
682 vcpu->arch.fp.fpr[i][0] = val->vsxval[0];
683 vcpu->arch.fp.fpr[i][1] = val->vsxval[1];
684 } else {
685 r = -ENXIO;
686 }
687 break;
688 #endif /* CONFIG_VSX */
689 #ifdef CONFIG_KVM_XICS
690 case KVM_REG_PPC_ICP_STATE:
691 if (!vcpu->arch.icp && !vcpu->arch.xive_vcpu) {
692 r = -ENXIO;
693 break;
694 }
695 if (xive_enabled())
696 r = kvmppc_xive_set_icp(vcpu, set_reg_val(id, *val));
697 else
698 r = kvmppc_xics_set_icp(vcpu, set_reg_val(id, *val));
699 break;
700 #endif /* CONFIG_KVM_XICS */
701 case KVM_REG_PPC_FSCR:
702 vcpu->arch.fscr = set_reg_val(id, *val);
703 break;
704 case KVM_REG_PPC_TAR:
705 vcpu->arch.tar = set_reg_val(id, *val);
706 break;
707 case KVM_REG_PPC_EBBHR:
708 vcpu->arch.ebbhr = set_reg_val(id, *val);
709 break;
710 case KVM_REG_PPC_EBBRR:
711 vcpu->arch.ebbrr = set_reg_val(id, *val);
712 break;
713 case KVM_REG_PPC_BESCR:
714 vcpu->arch.bescr = set_reg_val(id, *val);
715 break;
716 case KVM_REG_PPC_IC:
717 vcpu->arch.ic = set_reg_val(id, *val);
718 break;
719 default:
720 r = -EINVAL;
721 break;
722 }
723 }
724
725 return r;
726 }
727
728 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
729 {
730 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
731 }
732
733 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
734 {
735 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
736 }
737
738 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
739 {
740 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
741 }
742 EXPORT_SYMBOL_GPL(kvmppc_set_msr);
743
744 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
745 {
746 return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu);
747 }
748
749 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
750 struct kvm_translation *tr)
751 {
752 return 0;
753 }
754
755 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
756 struct kvm_guest_debug *dbg)
757 {
758 vcpu_load(vcpu);
759 vcpu->guest_debug = dbg->control;
760 vcpu_put(vcpu);
761 return 0;
762 }
763
764 void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
765 {
766 kvmppc_core_queue_dec(vcpu);
767 kvm_vcpu_kick(vcpu);
768 }
769
770 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
771 {
772 return kvm->arch.kvm_ops->vcpu_create(kvm, id);
773 }
774
775 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
776 {
777 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
778 }
779
780 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
781 {
782 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
783 }
784
785 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
786 {
787 return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
788 }
789
790 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
791 struct kvm_memory_slot *dont)
792 {
793 kvm->arch.kvm_ops->free_memslot(free, dont);
794 }
795
796 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
797 unsigned long npages)
798 {
799 return kvm->arch.kvm_ops->create_memslot(slot, npages);
800 }
801
802 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
803 {
804 kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
805 }
806
807 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
808 struct kvm_memory_slot *memslot,
809 const struct kvm_userspace_memory_region *mem)
810 {
811 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem);
812 }
813
814 void kvmppc_core_commit_memory_region(struct kvm *kvm,
815 const struct kvm_userspace_memory_region *mem,
816 const struct kvm_memory_slot *old,
817 const struct kvm_memory_slot *new)
818 {
819 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new);
820 }
821
822 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
823 {
824 return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
825 }
826 EXPORT_SYMBOL_GPL(kvm_unmap_hva);
827
828 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
829 {
830 return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
831 }
832
833 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end)
834 {
835 return kvm->arch.kvm_ops->age_hva(kvm, start, end);
836 }
837
838 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
839 {
840 return kvm->arch.kvm_ops->test_age_hva(kvm, hva);
841 }
842
843 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
844 {
845 kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte);
846 }
847
848 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
849 {
850 vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
851 }
852
853 int kvmppc_core_init_vm(struct kvm *kvm)
854 {
855
856 #ifdef CONFIG_PPC64
857 INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables);
858 INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
859 #endif
860
861 return kvm->arch.kvm_ops->init_vm(kvm);
862 }
863
864 void kvmppc_core_destroy_vm(struct kvm *kvm)
865 {
866 kvm->arch.kvm_ops->destroy_vm(kvm);
867
868 #ifdef CONFIG_PPC64
869 kvmppc_rtas_tokens_free(kvm);
870 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
871 #endif
872 }
873
874 int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
875 {
876 unsigned long size = kvmppc_get_gpr(vcpu, 4);
877 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
878 u64 buf;
879 int srcu_idx;
880 int ret;
881
882 if (!is_power_of_2(size) || (size > sizeof(buf)))
883 return H_TOO_HARD;
884
885 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
886 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
887 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
888 if (ret != 0)
889 return H_TOO_HARD;
890
891 switch (size) {
892 case 1:
893 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf);
894 break;
895
896 case 2:
897 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf));
898 break;
899
900 case 4:
901 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf));
902 break;
903
904 case 8:
905 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf));
906 break;
907
908 default:
909 BUG();
910 }
911
912 return H_SUCCESS;
913 }
914 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load);
915
916 int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
917 {
918 unsigned long size = kvmppc_get_gpr(vcpu, 4);
919 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
920 unsigned long val = kvmppc_get_gpr(vcpu, 6);
921 u64 buf;
922 int srcu_idx;
923 int ret;
924
925 switch (size) {
926 case 1:
927 *(u8 *)&buf = val;
928 break;
929
930 case 2:
931 *(__be16 *)&buf = cpu_to_be16(val);
932 break;
933
934 case 4:
935 *(__be32 *)&buf = cpu_to_be32(val);
936 break;
937
938 case 8:
939 *(__be64 *)&buf = cpu_to_be64(val);
940 break;
941
942 default:
943 return H_TOO_HARD;
944 }
945
946 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
947 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
948 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
949 if (ret != 0)
950 return H_TOO_HARD;
951
952 return H_SUCCESS;
953 }
954 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store);
955
956 int kvmppc_core_check_processor_compat(void)
957 {
958 /*
959 * We always return 0 for book3s. We check
960 * for compatibility while loading the HV
961 * or PR module
962 */
963 return 0;
964 }
965
966 int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
967 {
968 return kvm->arch.kvm_ops->hcall_implemented(hcall);
969 }
970
971 #ifdef CONFIG_KVM_XICS
972 int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level,
973 bool line_status)
974 {
975 if (xive_enabled())
976 return kvmppc_xive_set_irq(kvm, irq_source_id, irq, level,
977 line_status);
978 else
979 return kvmppc_xics_set_irq(kvm, irq_source_id, irq, level,
980 line_status);
981 }
982
983 int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *irq_entry,
984 struct kvm *kvm, int irq_source_id,
985 int level, bool line_status)
986 {
987 return kvm_set_irq(kvm, irq_source_id, irq_entry->gsi,
988 level, line_status);
989 }
990 static int kvmppc_book3s_set_irq(struct kvm_kernel_irq_routing_entry *e,
991 struct kvm *kvm, int irq_source_id, int level,
992 bool line_status)
993 {
994 return kvm_set_irq(kvm, irq_source_id, e->gsi, level, line_status);
995 }
996
997 int kvm_irq_map_gsi(struct kvm *kvm,
998 struct kvm_kernel_irq_routing_entry *entries, int gsi)
999 {
1000 entries->gsi = gsi;
1001 entries->type = KVM_IRQ_ROUTING_IRQCHIP;
1002 entries->set = kvmppc_book3s_set_irq;
1003 entries->irqchip.irqchip = 0;
1004 entries->irqchip.pin = gsi;
1005 return 1;
1006 }
1007
1008 int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin)
1009 {
1010 return pin;
1011 }
1012
1013 #endif /* CONFIG_KVM_XICS */
1014
1015 static int kvmppc_book3s_init(void)
1016 {
1017 int r;
1018
1019 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
1020 if (r)
1021 return r;
1022 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1023 r = kvmppc_book3s_init_pr();
1024 #endif
1025
1026 #ifdef CONFIG_KVM_XICS
1027 #ifdef CONFIG_KVM_XIVE
1028 if (xive_enabled()) {
1029 kvmppc_xive_init_module();
1030 kvm_register_device_ops(&kvm_xive_ops, KVM_DEV_TYPE_XICS);
1031 } else
1032 #endif
1033 kvm_register_device_ops(&kvm_xics_ops, KVM_DEV_TYPE_XICS);
1034 #endif
1035 return r;
1036 }
1037
1038 static void kvmppc_book3s_exit(void)
1039 {
1040 #ifdef CONFIG_KVM_XICS
1041 if (xive_enabled())
1042 kvmppc_xive_exit_module();
1043 #endif
1044 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1045 kvmppc_book3s_exit_pr();
1046 #endif
1047 kvm_exit();
1048 }
1049
1050 module_init(kvmppc_book3s_init);
1051 module_exit(kvmppc_book3s_exit);
1052
1053 /* On 32bit this is our one and only kernel module */
1054 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1055 MODULE_ALIAS_MISCDEV(KVM_MINOR);
1056 MODULE_ALIAS("devname:kvm");
1057 #endif
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