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Lynx framebuffers multidomain implementation.
[linux/elbrus.git] / arch / powerpc / kvm / book3s.c
blob94e597e6f15cd08f3f4f7deb5bab73d2d3ff1f27
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
46 struct 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_wakeup", VCPU_STAT(halt_wakeup) },
56 { "pf_storage", VCPU_STAT(pf_storage) },
57 { "sp_storage", VCPU_STAT(sp_storage) },
58 { "pf_instruc", VCPU_STAT(pf_instruc) },
59 { "sp_instruc", VCPU_STAT(sp_instruc) },
60 { "ld", VCPU_STAT(ld) },
61 { "ld_slow", VCPU_STAT(ld_slow) },
62 { "st", VCPU_STAT(st) },
63 { "st_slow", VCPU_STAT(st_slow) },
64 { NULL }
65 };
66
67 void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu)
68 {
69 }
70
71 void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
72 {
73 }
74
75 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
76 {
77 if (!is_kvmppc_hv_enabled(vcpu->kvm))
78 return to_book3s(vcpu)->hior;
79 return 0;
80 }
81
82 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
83 unsigned long pending_now, unsigned long old_pending)
84 {
85 if (is_kvmppc_hv_enabled(vcpu->kvm))
86 return;
87 if (pending_now)
88 vcpu->arch.shared->int_pending = 1;
89 else if (old_pending)
90 vcpu->arch.shared->int_pending = 0;
91 }
92
93 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
94 {
95 ulong crit_raw;
96 ulong crit_r1;
97 bool crit;
98
99 if (is_kvmppc_hv_enabled(vcpu->kvm))
100 return false;
101
102 crit_raw = vcpu->arch.shared->critical;
103 crit_r1 = kvmppc_get_gpr(vcpu, 1);
104
105 /* Truncate crit indicators in 32 bit mode */
106 if (!(vcpu->arch.shared->msr & MSR_SF)) {
107 crit_raw &= 0xffffffff;
108 crit_r1 &= 0xffffffff;
109 }
110
111 /* Critical section when crit == r1 */
112 crit = (crit_raw == crit_r1);
113 /* ... and we're in supervisor mode */
114 crit = crit && !(vcpu->arch.shared->msr & MSR_PR);
115
116 return crit;
117 }
118
119 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
120 {
121 vcpu->arch.shared->srr0 = kvmppc_get_pc(vcpu);
122 vcpu->arch.shared->srr1 = vcpu->arch.shared->msr | flags;
123 kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
124 vcpu->arch.mmu.reset_msr(vcpu);
125 }
126
127 static int kvmppc_book3s_vec2irqprio(unsigned int vec)
128 {
129 unsigned int prio;
130
131 switch (vec) {
132 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break;
133 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break;
134 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break;
135 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break;
136 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break;
137 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break;
138 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break;
139 case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break;
140 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break;
141 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break;
142 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break;
143 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break;
144 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break;
145 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break;
146 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break;
147 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break;
148 default: prio = BOOK3S_IRQPRIO_MAX; break;
149 }
150
151 return prio;
152 }
153
154 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
155 unsigned int vec)
156 {
157 unsigned long old_pending = vcpu->arch.pending_exceptions;
158
159 clear_bit(kvmppc_book3s_vec2irqprio(vec),
160 &vcpu->arch.pending_exceptions);
161
162 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
163 old_pending);
164 }
165
166 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
167 {
168 vcpu->stat.queue_intr++;
169
170 set_bit(kvmppc_book3s_vec2irqprio(vec),
171 &vcpu->arch.pending_exceptions);
172 #ifdef EXIT_DEBUG
173 printk(KERN_INFO "Queueing interrupt %x\n", vec);
174 #endif
175 }
176 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
177
178 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
179 {
180 /* might as well deliver this straight away */
181 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
182 }
183 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
184
185 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
186 {
187 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
188 }
189 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
190
191 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
192 {
193 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
194 }
195 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
196
197 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
198 {
199 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
200 }
201 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
202
203 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
204 struct kvm_interrupt *irq)
205 {
206 unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL;
207
208 if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
209 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL;
210
211 kvmppc_book3s_queue_irqprio(vcpu, vec);
212 }
213
214 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
215 {
216 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
217 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);
218 }
219
220 int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority)
221 {
222 int deliver = 1;
223 int vec = 0;
224 bool crit = kvmppc_critical_section(vcpu);
225
226 switch (priority) {
227 case BOOK3S_IRQPRIO_DECREMENTER:
228 deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit;
229 vec = BOOK3S_INTERRUPT_DECREMENTER;
230 break;
231 case BOOK3S_IRQPRIO_EXTERNAL:
232 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
233 deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit;
234 vec = BOOK3S_INTERRUPT_EXTERNAL;
235 break;
236 case BOOK3S_IRQPRIO_SYSTEM_RESET:
237 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
238 break;
239 case BOOK3S_IRQPRIO_MACHINE_CHECK:
240 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
241 break;
242 case BOOK3S_IRQPRIO_DATA_STORAGE:
243 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
244 break;
245 case BOOK3S_IRQPRIO_INST_STORAGE:
246 vec = BOOK3S_INTERRUPT_INST_STORAGE;
247 break;
248 case BOOK3S_IRQPRIO_DATA_SEGMENT:
249 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
250 break;
251 case BOOK3S_IRQPRIO_INST_SEGMENT:
252 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
253 break;
254 case BOOK3S_IRQPRIO_ALIGNMENT:
255 vec = BOOK3S_INTERRUPT_ALIGNMENT;
256 break;
257 case BOOK3S_IRQPRIO_PROGRAM:
258 vec = BOOK3S_INTERRUPT_PROGRAM;
259 break;
260 case BOOK3S_IRQPRIO_VSX:
261 vec = BOOK3S_INTERRUPT_VSX;
262 break;
263 case BOOK3S_IRQPRIO_ALTIVEC:
264 vec = BOOK3S_INTERRUPT_ALTIVEC;
265 break;
266 case BOOK3S_IRQPRIO_FP_UNAVAIL:
267 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
268 break;
269 case BOOK3S_IRQPRIO_SYSCALL:
270 vec = BOOK3S_INTERRUPT_SYSCALL;
271 break;
272 case BOOK3S_IRQPRIO_DEBUG:
273 vec = BOOK3S_INTERRUPT_TRACE;
274 break;
275 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
276 vec = BOOK3S_INTERRUPT_PERFMON;
277 break;
278 default:
279 deliver = 0;
280 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
281 break;
282 }
283
284 #if 0
285 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
286 #endif
287
288 if (deliver)
289 kvmppc_inject_interrupt(vcpu, vec, 0);
290
291 return deliver;
292 }
293
294 /*
295 * This function determines if an irqprio should be cleared once issued.
296 */
297 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
298 {
299 switch (priority) {
300 case BOOK3S_IRQPRIO_DECREMENTER:
301 /* DEC interrupts get cleared by mtdec */
302 return false;
303 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
304 /* External interrupts get cleared by userspace */
305 return false;
306 }
307
308 return true;
309 }
310
311 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
312 {
313 unsigned long *pending = &vcpu->arch.pending_exceptions;
314 unsigned long old_pending = vcpu->arch.pending_exceptions;
315 unsigned int priority;
316
317 #ifdef EXIT_DEBUG
318 if (vcpu->arch.pending_exceptions)
319 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
320 #endif
321 priority = __ffs(*pending);
322 while (priority < BOOK3S_IRQPRIO_MAX) {
323 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
324 clear_irqprio(vcpu, priority)) {
325 clear_bit(priority, &vcpu->arch.pending_exceptions);
326 break;
327 }
328
329 priority = find_next_bit(pending,
330 BITS_PER_BYTE * sizeof(*pending),
331 priority + 1);
332 }
333
334 /* Tell the guest about our interrupt status */
335 kvmppc_update_int_pending(vcpu, *pending, old_pending);
336
337 return 0;
338 }
339 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
340
341 pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn, bool writing,
342 bool *writable)
343 {
344 ulong mp_pa = vcpu->arch.magic_page_pa;
345
346 if (!(vcpu->arch.shared->msr & MSR_SF))
347 mp_pa = (uint32_t)mp_pa;
348
349 /* Magic page override */
350 if (unlikely(mp_pa) &&
351 unlikely(((gfn << PAGE_SHIFT) & KVM_PAM) ==
352 ((mp_pa & PAGE_MASK) & KVM_PAM))) {
353 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
354 pfn_t pfn;
355
356 pfn = (pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
357 get_page(pfn_to_page(pfn));
358 if (writable)
359 *writable = true;
360 return pfn;
361 }
362
363 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
364 }
365 EXPORT_SYMBOL_GPL(kvmppc_gfn_to_pfn);
366
367 static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data,
368 bool iswrite, struct kvmppc_pte *pte)
369 {
370 int relocated = (vcpu->arch.shared->msr & (data ? MSR_DR : MSR_IR));
371 int r;
372
373 if (relocated) {
374 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
375 } else {
376 pte->eaddr = eaddr;
377 pte->raddr = eaddr & KVM_PAM;
378 pte->vpage = VSID_REAL | eaddr >> 12;
379 pte->may_read = true;
380 pte->may_write = true;
381 pte->may_execute = true;
382 r = 0;
383 }
384
385 return r;
386 }
387
388 static hva_t kvmppc_bad_hva(void)
389 {
390 return PAGE_OFFSET;
391 }
392
393 static hva_t kvmppc_pte_to_hva(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
394 bool read)
395 {
396 hva_t hpage;
397
398 if (read && !pte->may_read)
399 goto err;
400
401 if (!read && !pte->may_write)
402 goto err;
403
404 hpage = gfn_to_hva(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
405 if (kvm_is_error_hva(hpage))
406 goto err;
407
408 return hpage | (pte->raddr & ~PAGE_MASK);
409 err:
410 return kvmppc_bad_hva();
411 }
412
413 int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
414 bool data)
415 {
416 struct kvmppc_pte pte;
417
418 vcpu->stat.st++;
419
420 if (kvmppc_xlate(vcpu, *eaddr, data, true, &pte))
421 return -ENOENT;
422
423 *eaddr = pte.raddr;
424
425 if (!pte.may_write)
426 return -EPERM;
427
428 if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size))
429 return EMULATE_DO_MMIO;
430
431 return EMULATE_DONE;
432 }
433 EXPORT_SYMBOL_GPL(kvmppc_st);
434
435 int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
436 bool data)
437 {
438 struct kvmppc_pte pte;
439 hva_t hva = *eaddr;
440
441 vcpu->stat.ld++;
442
443 if (kvmppc_xlate(vcpu, *eaddr, data, false, &pte))
444 goto nopte;
445
446 *eaddr = pte.raddr;
447
448 hva = kvmppc_pte_to_hva(vcpu, &pte, true);
449 if (kvm_is_error_hva(hva))
450 goto mmio;
451
452 if (copy_from_user(ptr, (void __user *)hva, size)) {
453 printk(KERN_INFO "kvmppc_ld at 0x%lx failed\n", hva);
454 goto mmio;
455 }
456
457 return EMULATE_DONE;
458
459 nopte:
460 return -ENOENT;
461 mmio:
462 return EMULATE_DO_MMIO;
463 }
464 EXPORT_SYMBOL_GPL(kvmppc_ld);
465
466 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
467 {
468 return 0;
469 }
470
471 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
472 {
473 return 0;
474 }
475
476 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
477 {
478 }
479
480 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
481 struct kvm_sregs *sregs)
482 {
483 return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
484 }
485
486 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
487 struct kvm_sregs *sregs)
488 {
489 return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
490 }
491
492 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
493 {
494 int i;
495
496 regs->pc = kvmppc_get_pc(vcpu);
497 regs->cr = kvmppc_get_cr(vcpu);
498 regs->ctr = kvmppc_get_ctr(vcpu);
499 regs->lr = kvmppc_get_lr(vcpu);
500 regs->xer = kvmppc_get_xer(vcpu);
501 regs->msr = vcpu->arch.shared->msr;
502 regs->srr0 = vcpu->arch.shared->srr0;
503 regs->srr1 = vcpu->arch.shared->srr1;
504 regs->pid = vcpu->arch.pid;
505 regs->sprg0 = vcpu->arch.shared->sprg0;
506 regs->sprg1 = vcpu->arch.shared->sprg1;
507 regs->sprg2 = vcpu->arch.shared->sprg2;
508 regs->sprg3 = vcpu->arch.shared->sprg3;
509 regs->sprg4 = vcpu->arch.shared->sprg4;
510 regs->sprg5 = vcpu->arch.shared->sprg5;
511 regs->sprg6 = vcpu->arch.shared->sprg6;
512 regs->sprg7 = vcpu->arch.shared->sprg7;
513
514 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
515 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
516
517 return 0;
518 }
519
520 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
521 {
522 int i;
523
524 kvmppc_set_pc(vcpu, regs->pc);
525 kvmppc_set_cr(vcpu, regs->cr);
526 kvmppc_set_ctr(vcpu, regs->ctr);
527 kvmppc_set_lr(vcpu, regs->lr);
528 kvmppc_set_xer(vcpu, regs->xer);
529 kvmppc_set_msr(vcpu, regs->msr);
530 vcpu->arch.shared->srr0 = regs->srr0;
531 vcpu->arch.shared->srr1 = regs->srr1;
532 vcpu->arch.shared->sprg0 = regs->sprg0;
533 vcpu->arch.shared->sprg1 = regs->sprg1;
534 vcpu->arch.shared->sprg2 = regs->sprg2;
535 vcpu->arch.shared->sprg3 = regs->sprg3;
536 vcpu->arch.shared->sprg4 = regs->sprg4;
537 vcpu->arch.shared->sprg5 = regs->sprg5;
538 vcpu->arch.shared->sprg6 = regs->sprg6;
539 vcpu->arch.shared->sprg7 = regs->sprg7;
540
541 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
542 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
543
544 return 0;
545 }
546
547 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
548 {
549 return -ENOTSUPP;
550 }
551
552 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
553 {
554 return -ENOTSUPP;
555 }
556
557 int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
558 {
559 int r;
560 union kvmppc_one_reg val;
561 int size;
562 long int i;
563
564 size = one_reg_size(reg->id);
565 if (size > sizeof(val))
566 return -EINVAL;
567
568 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, reg->id, &val);
569 if (r == -EINVAL) {
570 r = 0;
571 switch (reg->id) {
572 case KVM_REG_PPC_DAR:
573 val = get_reg_val(reg->id, vcpu->arch.shared->dar);
574 break;
575 case KVM_REG_PPC_DSISR:
576 val = get_reg_val(reg->id, vcpu->arch.shared->dsisr);
577 break;
578 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
579 i = reg->id - KVM_REG_PPC_FPR0;
580 val = get_reg_val(reg->id, VCPU_FPR(vcpu, i));
581 break;
582 case KVM_REG_PPC_FPSCR:
583 val = get_reg_val(reg->id, vcpu->arch.fp.fpscr);
584 break;
585 #ifdef CONFIG_ALTIVEC
586 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
587 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
588 r = -ENXIO;
589 break;
590 }
591 val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
592 break;
593 case KVM_REG_PPC_VSCR:
594 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
595 r = -ENXIO;
596 break;
597 }
598 val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
599 break;
600 case KVM_REG_PPC_VRSAVE:
601 val = get_reg_val(reg->id, vcpu->arch.vrsave);
602 break;
603 #endif /* CONFIG_ALTIVEC */
604 #ifdef CONFIG_VSX
605 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
606 if (cpu_has_feature(CPU_FTR_VSX)) {
607 long int i = reg->id - KVM_REG_PPC_VSR0;
608 val.vsxval[0] = vcpu->arch.fp.fpr[i][0];
609 val.vsxval[1] = vcpu->arch.fp.fpr[i][1];
610 } else {
611 r = -ENXIO;
612 }
613 break;
614 #endif /* CONFIG_VSX */
615 case KVM_REG_PPC_DEBUG_INST: {
616 u32 opcode = INS_TW;
617 r = copy_to_user((u32 __user *)(long)reg->addr,
618 &opcode, sizeof(u32));
619 break;
620 }
621 #ifdef CONFIG_KVM_XICS
622 case KVM_REG_PPC_ICP_STATE:
623 if (!vcpu->arch.icp) {
624 r = -ENXIO;
625 break;
626 }
627 val = get_reg_val(reg->id, kvmppc_xics_get_icp(vcpu));
628 break;
629 #endif /* CONFIG_KVM_XICS */
630 default:
631 r = -EINVAL;
632 break;
633 }
634 }
635 if (r)
636 return r;
637
638 if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size))
639 r = -EFAULT;
640
641 return r;
642 }
643
644 int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
645 {
646 int r;
647 union kvmppc_one_reg val;
648 int size;
649 long int i;
650
651 size = one_reg_size(reg->id);
652 if (size > sizeof(val))
653 return -EINVAL;
654
655 if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size))
656 return -EFAULT;
657
658 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, reg->id, &val);
659 if (r == -EINVAL) {
660 r = 0;
661 switch (reg->id) {
662 case KVM_REG_PPC_DAR:
663 vcpu->arch.shared->dar = set_reg_val(reg->id, val);
664 break;
665 case KVM_REG_PPC_DSISR:
666 vcpu->arch.shared->dsisr = set_reg_val(reg->id, val);
667 break;
668 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
669 i = reg->id - KVM_REG_PPC_FPR0;
670 VCPU_FPR(vcpu, i) = set_reg_val(reg->id, val);
671 break;
672 case KVM_REG_PPC_FPSCR:
673 vcpu->arch.fp.fpscr = set_reg_val(reg->id, val);
674 break;
675 #ifdef CONFIG_ALTIVEC
676 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
677 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
678 r = -ENXIO;
679 break;
680 }
681 vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
682 break;
683 case KVM_REG_PPC_VSCR:
684 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
685 r = -ENXIO;
686 break;
687 }
688 vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
689 break;
690 case KVM_REG_PPC_VRSAVE:
691 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
692 r = -ENXIO;
693 break;
694 }
695 vcpu->arch.vrsave = set_reg_val(reg->id, val);
696 break;
697 #endif /* CONFIG_ALTIVEC */
698 #ifdef CONFIG_VSX
699 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
700 if (cpu_has_feature(CPU_FTR_VSX)) {
701 long int i = reg->id - KVM_REG_PPC_VSR0;
702 vcpu->arch.fp.fpr[i][0] = val.vsxval[0];
703 vcpu->arch.fp.fpr[i][1] = val.vsxval[1];
704 } else {
705 r = -ENXIO;
706 }
707 break;
708 #endif /* CONFIG_VSX */
709 #ifdef CONFIG_KVM_XICS
710 case KVM_REG_PPC_ICP_STATE:
711 if (!vcpu->arch.icp) {
712 r = -ENXIO;
713 break;
714 }
715 r = kvmppc_xics_set_icp(vcpu,
716 set_reg_val(reg->id, val));
717 break;
718 #endif /* CONFIG_KVM_XICS */
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 return -EINVAL;
759 }
760
761 void kvmppc_decrementer_func(unsigned long data)
762 {
763 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
764
765 kvmppc_core_queue_dec(vcpu);
766 kvm_vcpu_kick(vcpu);
767 }
768
769 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
770 {
771 return kvm->arch.kvm_ops->vcpu_create(kvm, id);
772 }
773
774 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
775 {
776 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
777 }
778
779 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
780 {
781 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
782 }
783
784 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
785 {
786 return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
787 }
788
789 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
790 struct kvm_memory_slot *dont)
791 {
792 kvm->arch.kvm_ops->free_memslot(free, dont);
793 }
794
795 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
796 unsigned long npages)
797 {
798 return kvm->arch.kvm_ops->create_memslot(slot, npages);
799 }
800
801 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
802 {
803 kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
804 }
805
806 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
807 struct kvm_memory_slot *memslot,
808 struct kvm_userspace_memory_region *mem)
809 {
810 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem);
811 }
812
813 void kvmppc_core_commit_memory_region(struct kvm *kvm,
814 struct kvm_userspace_memory_region *mem,
815 const struct kvm_memory_slot *old)
816 {
817 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old);
818 }
819
820 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
821 {
822 return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
823 }
824 EXPORT_SYMBOL_GPL(kvm_unmap_hva);
825
826 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
827 {
828 return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
829 }
830
831 int kvm_age_hva(struct kvm *kvm, unsigned long hva)
832 {
833 return kvm->arch.kvm_ops->age_hva(kvm, hva);
834 }
835
836 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
837 {
838 return kvm->arch.kvm_ops->test_age_hva(kvm, hva);
839 }
840
841 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
842 {
843 kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte);
844 }
845
846 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
847 {
848 vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
849 }
850
851 int kvmppc_core_init_vm(struct kvm *kvm)
852 {
853
854 #ifdef CONFIG_PPC64
855 INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables);
856 INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
857 #endif
858
859 return kvm->arch.kvm_ops->init_vm(kvm);
860 }
861
862 void kvmppc_core_destroy_vm(struct kvm *kvm)
863 {
864 kvm->arch.kvm_ops->destroy_vm(kvm);
865
866 #ifdef CONFIG_PPC64
867 kvmppc_rtas_tokens_free(kvm);
868 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
869 #endif
870 }
871
872 int kvmppc_core_check_processor_compat(void)
873 {
874 /*
875 * We always return 0 for book3s. We check
876 * for compatability while loading the HV
877 * or PR module
878 */
879 return 0;
880 }
881
882 static int kvmppc_book3s_init(void)
883 {
884 int r;
885
886 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
887 if (r)
888 return r;
889 #ifdef CONFIG_KVM_BOOK3S_32
890 r = kvmppc_book3s_init_pr();
891 #endif
892 return r;
893
894 }
895
896 static void kvmppc_book3s_exit(void)
897 {
898 #ifdef CONFIG_KVM_BOOK3S_32
899 kvmppc_book3s_exit_pr();
900 #endif
901 kvm_exit();
902 }
903
904 module_init(kvmppc_book3s_init);
905 module_exit(kvmppc_book3s_exit);
906
907 /* On 32bit this is our one and only kernel module */
908 #ifdef CONFIG_KVM_BOOK3S_32
909 MODULE_ALIAS_MISCDEV(KVM_MINOR);
910 MODULE_ALIAS("devname:kvm");
911 #endif
Linux for the MCST Elbrus 2000 architecture