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