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Merge tag 'batadv-net-for-davem-20170301' of git://git.open-mesh.org/linux-merge
[mirror_ubuntu-bionic-kernel.git] / arch / powerpc / kvm / book3s.c
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 <linux/uaccess.h>
29 #include <asm/io.h>
30 #include <asm/kvm_ppc.h>
31 #include <asm/kvm_book3s.h>
32 #include <asm/mmu_context.h>
33 #include <asm/page.h>
34 #include <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_poll_success_ns", VCPU_STAT(halt_poll_success_ns) },
56 { "halt_poll_fail_ns", VCPU_STAT(halt_poll_fail_ns) },
57 { "halt_wait_ns", VCPU_STAT(halt_wait_ns) },
58 { "halt_successful_poll", VCPU_STAT(halt_successful_poll), },
59 { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll), },
60 { "halt_successful_wait", VCPU_STAT(halt_successful_wait) },
61 { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) },
62 { "halt_wakeup", VCPU_STAT(halt_wakeup) },
63 { "pf_storage", VCPU_STAT(pf_storage) },
64 { "sp_storage", VCPU_STAT(sp_storage) },
65 { "pf_instruc", VCPU_STAT(pf_instruc) },
66 { "sp_instruc", VCPU_STAT(sp_instruc) },
67 { "ld", VCPU_STAT(ld) },
68 { "ld_slow", VCPU_STAT(ld_slow) },
69 { "st", VCPU_STAT(st) },
70 { "st_slow", VCPU_STAT(st_slow) },
71 { "pthru_all", VCPU_STAT(pthru_all) },
72 { "pthru_host", VCPU_STAT(pthru_host) },
73 { "pthru_bad_aff", VCPU_STAT(pthru_bad_aff) },
74 { NULL }
75 };
76
77 void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
78 {
79 if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
80 ulong pc = kvmppc_get_pc(vcpu);
81 if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
82 kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
83 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
84 }
85 }
86 EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
87
88 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
89 {
90 if (!is_kvmppc_hv_enabled(vcpu->kvm))
91 return to_book3s(vcpu)->hior;
92 return 0;
93 }
94
95 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
96 unsigned long pending_now, unsigned long old_pending)
97 {
98 if (is_kvmppc_hv_enabled(vcpu->kvm))
99 return;
100 if (pending_now)
101 kvmppc_set_int_pending(vcpu, 1);
102 else if (old_pending)
103 kvmppc_set_int_pending(vcpu, 0);
104 }
105
106 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
107 {
108 ulong crit_raw;
109 ulong crit_r1;
110 bool crit;
111
112 if (is_kvmppc_hv_enabled(vcpu->kvm))
113 return false;
114
115 crit_raw = kvmppc_get_critical(vcpu);
116 crit_r1 = kvmppc_get_gpr(vcpu, 1);
117
118 /* Truncate crit indicators in 32 bit mode */
119 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
120 crit_raw &= 0xffffffff;
121 crit_r1 &= 0xffffffff;
122 }
123
124 /* Critical section when crit == r1 */
125 crit = (crit_raw == crit_r1);
126 /* ... and we're in supervisor mode */
127 crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR);
128
129 return crit;
130 }
131
132 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
133 {
134 kvmppc_unfixup_split_real(vcpu);
135 kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu));
136 kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags);
137 kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
138 vcpu->arch.mmu.reset_msr(vcpu);
139 }
140
141 static int kvmppc_book3s_vec2irqprio(unsigned int vec)
142 {
143 unsigned int prio;
144
145 switch (vec) {
146 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break;
147 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break;
148 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break;
149 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break;
150 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break;
151 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break;
152 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break;
153 case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break;
154 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break;
155 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break;
156 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break;
157 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break;
158 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break;
159 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break;
160 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break;
161 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break;
162 case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; break;
163 default: prio = BOOK3S_IRQPRIO_MAX; break;
164 }
165
166 return prio;
167 }
168
169 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
170 unsigned int vec)
171 {
172 unsigned long old_pending = vcpu->arch.pending_exceptions;
173
174 clear_bit(kvmppc_book3s_vec2irqprio(vec),
175 &vcpu->arch.pending_exceptions);
176
177 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
178 old_pending);
179 }
180
181 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
182 {
183 vcpu->stat.queue_intr++;
184
185 set_bit(kvmppc_book3s_vec2irqprio(vec),
186 &vcpu->arch.pending_exceptions);
187 #ifdef EXIT_DEBUG
188 printk(KERN_INFO "Queueing interrupt %x\n", vec);
189 #endif
190 }
191 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
192
193 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
194 {
195 /* might as well deliver this straight away */
196 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
197 }
198 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
199
200 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
201 {
202 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
203 }
204 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
205
206 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
207 {
208 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
209 }
210 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
211
212 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
213 {
214 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
215 }
216 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
217
218 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
219 struct kvm_interrupt *irq)
220 {
221 unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL;
222
223 if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
224 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL;
225
226 kvmppc_book3s_queue_irqprio(vcpu, vec);
227 }
228
229 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
230 {
231 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
232 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);
233 }
234
235 void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar,
236 ulong flags)
237 {
238 kvmppc_set_dar(vcpu, dar);
239 kvmppc_set_dsisr(vcpu, flags);
240 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE);
241 }
242 EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage); /* used by kvm_hv */
243
244 void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags)
245 {
246 u64 msr = kvmppc_get_msr(vcpu);
247 msr &= ~(SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
248 msr |= flags & (SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
249 kvmppc_set_msr_fast(vcpu, msr);
250 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE);
251 }
252
253 static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu,
254 unsigned int priority)
255 {
256 int deliver = 1;
257 int vec = 0;
258 bool crit = kvmppc_critical_section(vcpu);
259
260 switch (priority) {
261 case BOOK3S_IRQPRIO_DECREMENTER:
262 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
263 vec = BOOK3S_INTERRUPT_DECREMENTER;
264 break;
265 case BOOK3S_IRQPRIO_EXTERNAL:
266 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
267 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
268 vec = BOOK3S_INTERRUPT_EXTERNAL;
269 break;
270 case BOOK3S_IRQPRIO_SYSTEM_RESET:
271 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
272 break;
273 case BOOK3S_IRQPRIO_MACHINE_CHECK:
274 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
275 break;
276 case BOOK3S_IRQPRIO_DATA_STORAGE:
277 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
278 break;
279 case BOOK3S_IRQPRIO_INST_STORAGE:
280 vec = BOOK3S_INTERRUPT_INST_STORAGE;
281 break;
282 case BOOK3S_IRQPRIO_DATA_SEGMENT:
283 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
284 break;
285 case BOOK3S_IRQPRIO_INST_SEGMENT:
286 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
287 break;
288 case BOOK3S_IRQPRIO_ALIGNMENT:
289 vec = BOOK3S_INTERRUPT_ALIGNMENT;
290 break;
291 case BOOK3S_IRQPRIO_PROGRAM:
292 vec = BOOK3S_INTERRUPT_PROGRAM;
293 break;
294 case BOOK3S_IRQPRIO_VSX:
295 vec = BOOK3S_INTERRUPT_VSX;
296 break;
297 case BOOK3S_IRQPRIO_ALTIVEC:
298 vec = BOOK3S_INTERRUPT_ALTIVEC;
299 break;
300 case BOOK3S_IRQPRIO_FP_UNAVAIL:
301 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
302 break;
303 case BOOK3S_IRQPRIO_SYSCALL:
304 vec = BOOK3S_INTERRUPT_SYSCALL;
305 break;
306 case BOOK3S_IRQPRIO_DEBUG:
307 vec = BOOK3S_INTERRUPT_TRACE;
308 break;
309 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
310 vec = BOOK3S_INTERRUPT_PERFMON;
311 break;
312 case BOOK3S_IRQPRIO_FAC_UNAVAIL:
313 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL;
314 break;
315 default:
316 deliver = 0;
317 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
318 break;
319 }
320
321 #if 0
322 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
323 #endif
324
325 if (deliver)
326 kvmppc_inject_interrupt(vcpu, vec, 0);
327
328 return deliver;
329 }
330
331 /*
332 * This function determines if an irqprio should be cleared once issued.
333 */
334 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
335 {
336 switch (priority) {
337 case BOOK3S_IRQPRIO_DECREMENTER:
338 /* DEC interrupts get cleared by mtdec */
339 return false;
340 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
341 /* External interrupts get cleared by userspace */
342 return false;
343 }
344
345 return true;
346 }
347
348 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
349 {
350 unsigned long *pending = &vcpu->arch.pending_exceptions;
351 unsigned long old_pending = vcpu->arch.pending_exceptions;
352 unsigned int priority;
353
354 #ifdef EXIT_DEBUG
355 if (vcpu->arch.pending_exceptions)
356 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
357 #endif
358 priority = __ffs(*pending);
359 while (priority < BOOK3S_IRQPRIO_MAX) {
360 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
361 clear_irqprio(vcpu, priority)) {
362 clear_bit(priority, &vcpu->arch.pending_exceptions);
363 break;
364 }
365
366 priority = find_next_bit(pending,
367 BITS_PER_BYTE * sizeof(*pending),
368 priority + 1);
369 }
370
371 /* Tell the guest about our interrupt status */
372 kvmppc_update_int_pending(vcpu, *pending, old_pending);
373
374 return 0;
375 }
376 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
377
378 kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
379 bool *writable)
380 {
381 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
382 gfn_t gfn = gpa >> PAGE_SHIFT;
383
384 if (!(kvmppc_get_msr(vcpu) & MSR_SF))
385 mp_pa = (uint32_t)mp_pa;
386
387 /* Magic page override */
388 gpa &= ~0xFFFULL;
389 if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
390 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
391 kvm_pfn_t pfn;
392
393 pfn = (kvm_pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
394 get_page(pfn_to_page(pfn));
395 if (writable)
396 *writable = true;
397 return pfn;
398 }
399
400 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
401 }
402 EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
403
404 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
405 enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
406 {
407 bool data = (xlid == XLATE_DATA);
408 bool iswrite = (xlrw == XLATE_WRITE);
409 int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
410 int r;
411
412 if (relocated) {
413 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
414 } else {
415 pte->eaddr = eaddr;
416 pte->raddr = eaddr & KVM_PAM;
417 pte->vpage = VSID_REAL | eaddr >> 12;
418 pte->may_read = true;
419 pte->may_write = true;
420 pte->may_execute = true;
421 r = 0;
422
423 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
424 !data) {
425 if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
426 ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
427 pte->raddr &= ~SPLIT_HACK_MASK;
428 }
429 }
430
431 return r;
432 }
433
434 int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type,
435 u32 *inst)
436 {
437 ulong pc = kvmppc_get_pc(vcpu);
438 int r;
439
440 if (type == INST_SC)
441 pc -= 4;
442
443 r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false);
444 if (r == EMULATE_DONE)
445 return r;
446 else
447 return EMULATE_AGAIN;
448 }
449 EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
450
451 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
452 {
453 return 0;
454 }
455
456 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
457 {
458 return 0;
459 }
460
461 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
462 {
463 }
464
465 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
466 struct kvm_sregs *sregs)
467 {
468 return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
469 }
470
471 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
472 struct kvm_sregs *sregs)
473 {
474 return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
475 }
476
477 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
478 {
479 int i;
480
481 regs->pc = kvmppc_get_pc(vcpu);
482 regs->cr = kvmppc_get_cr(vcpu);
483 regs->ctr = kvmppc_get_ctr(vcpu);
484 regs->lr = kvmppc_get_lr(vcpu);
485 regs->xer = kvmppc_get_xer(vcpu);
486 regs->msr = kvmppc_get_msr(vcpu);
487 regs->srr0 = kvmppc_get_srr0(vcpu);
488 regs->srr1 = kvmppc_get_srr1(vcpu);
489 regs->pid = vcpu->arch.pid;
490 regs->sprg0 = kvmppc_get_sprg0(vcpu);
491 regs->sprg1 = kvmppc_get_sprg1(vcpu);
492 regs->sprg2 = kvmppc_get_sprg2(vcpu);
493 regs->sprg3 = kvmppc_get_sprg3(vcpu);
494 regs->sprg4 = kvmppc_get_sprg4(vcpu);
495 regs->sprg5 = kvmppc_get_sprg5(vcpu);
496 regs->sprg6 = kvmppc_get_sprg6(vcpu);
497 regs->sprg7 = kvmppc_get_sprg7(vcpu);
498
499 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
500 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
501
502 return 0;
503 }
504
505 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
506 {
507 int i;
508
509 kvmppc_set_pc(vcpu, regs->pc);
510 kvmppc_set_cr(vcpu, regs->cr);
511 kvmppc_set_ctr(vcpu, regs->ctr);
512 kvmppc_set_lr(vcpu, regs->lr);
513 kvmppc_set_xer(vcpu, regs->xer);
514 kvmppc_set_msr(vcpu, regs->msr);
515 kvmppc_set_srr0(vcpu, regs->srr0);
516 kvmppc_set_srr1(vcpu, regs->srr1);
517 kvmppc_set_sprg0(vcpu, regs->sprg0);
518 kvmppc_set_sprg1(vcpu, regs->sprg1);
519 kvmppc_set_sprg2(vcpu, regs->sprg2);
520 kvmppc_set_sprg3(vcpu, regs->sprg3);
521 kvmppc_set_sprg4(vcpu, regs->sprg4);
522 kvmppc_set_sprg5(vcpu, regs->sprg5);
523 kvmppc_set_sprg6(vcpu, regs->sprg6);
524 kvmppc_set_sprg7(vcpu, regs->sprg7);
525
526 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
527 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
528
529 return 0;
530 }
531
532 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
533 {
534 return -ENOTSUPP;
535 }
536
537 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
538 {
539 return -ENOTSUPP;
540 }
541
542 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
543 union kvmppc_one_reg *val)
544 {
545 int r = 0;
546 long int i;
547
548 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
549 if (r == -EINVAL) {
550 r = 0;
551 switch (id) {
552 case KVM_REG_PPC_DAR:
553 *val = get_reg_val(id, kvmppc_get_dar(vcpu));
554 break;
555 case KVM_REG_PPC_DSISR:
556 *val = get_reg_val(id, kvmppc_get_dsisr(vcpu));
557 break;
558 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
559 i = id - KVM_REG_PPC_FPR0;
560 *val = get_reg_val(id, VCPU_FPR(vcpu, i));
561 break;
562 case KVM_REG_PPC_FPSCR:
563 *val = get_reg_val(id, vcpu->arch.fp.fpscr);
564 break;
565 #ifdef CONFIG_VSX
566 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
567 if (cpu_has_feature(CPU_FTR_VSX)) {
568 i = id - KVM_REG_PPC_VSR0;
569 val->vsxval[0] = vcpu->arch.fp.fpr[i][0];
570 val->vsxval[1] = vcpu->arch.fp.fpr[i][1];
571 } else {
572 r = -ENXIO;
573 }
574 break;
575 #endif /* CONFIG_VSX */
576 case KVM_REG_PPC_DEBUG_INST:
577 *val = get_reg_val(id, INS_TW);
578 break;
579 #ifdef CONFIG_KVM_XICS
580 case KVM_REG_PPC_ICP_STATE:
581 if (!vcpu->arch.icp) {
582 r = -ENXIO;
583 break;
584 }
585 *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu));
586 break;
587 #endif /* CONFIG_KVM_XICS */
588 case KVM_REG_PPC_FSCR:
589 *val = get_reg_val(id, vcpu->arch.fscr);
590 break;
591 case KVM_REG_PPC_TAR:
592 *val = get_reg_val(id, vcpu->arch.tar);
593 break;
594 case KVM_REG_PPC_EBBHR:
595 *val = get_reg_val(id, vcpu->arch.ebbhr);
596 break;
597 case KVM_REG_PPC_EBBRR:
598 *val = get_reg_val(id, vcpu->arch.ebbrr);
599 break;
600 case KVM_REG_PPC_BESCR:
601 *val = get_reg_val(id, vcpu->arch.bescr);
602 break;
603 case KVM_REG_PPC_IC:
604 *val = get_reg_val(id, vcpu->arch.ic);
605 break;
606 default:
607 r = -EINVAL;
608 break;
609 }
610 }
611
612 return r;
613 }
614
615 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
616 union kvmppc_one_reg *val)
617 {
618 int r = 0;
619 long int i;
620
621 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
622 if (r == -EINVAL) {
623 r = 0;
624 switch (id) {
625 case KVM_REG_PPC_DAR:
626 kvmppc_set_dar(vcpu, set_reg_val(id, *val));
627 break;
628 case KVM_REG_PPC_DSISR:
629 kvmppc_set_dsisr(vcpu, set_reg_val(id, *val));
630 break;
631 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
632 i = id - KVM_REG_PPC_FPR0;
633 VCPU_FPR(vcpu, i) = set_reg_val(id, *val);
634 break;
635 case KVM_REG_PPC_FPSCR:
636 vcpu->arch.fp.fpscr = set_reg_val(id, *val);
637 break;
638 #ifdef CONFIG_VSX
639 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
640 if (cpu_has_feature(CPU_FTR_VSX)) {
641 i = id - KVM_REG_PPC_VSR0;
642 vcpu->arch.fp.fpr[i][0] = val->vsxval[0];
643 vcpu->arch.fp.fpr[i][1] = val->vsxval[1];
644 } else {
645 r = -ENXIO;
646 }
647 break;
648 #endif /* CONFIG_VSX */
649 #ifdef CONFIG_KVM_XICS
650 case KVM_REG_PPC_ICP_STATE:
651 if (!vcpu->arch.icp) {
652 r = -ENXIO;
653 break;
654 }
655 r = kvmppc_xics_set_icp(vcpu,
656 set_reg_val(id, *val));
657 break;
658 #endif /* CONFIG_KVM_XICS */
659 case KVM_REG_PPC_FSCR:
660 vcpu->arch.fscr = set_reg_val(id, *val);
661 break;
662 case KVM_REG_PPC_TAR:
663 vcpu->arch.tar = set_reg_val(id, *val);
664 break;
665 case KVM_REG_PPC_EBBHR:
666 vcpu->arch.ebbhr = set_reg_val(id, *val);
667 break;
668 case KVM_REG_PPC_EBBRR:
669 vcpu->arch.ebbrr = set_reg_val(id, *val);
670 break;
671 case KVM_REG_PPC_BESCR:
672 vcpu->arch.bescr = set_reg_val(id, *val);
673 break;
674 case KVM_REG_PPC_IC:
675 vcpu->arch.ic = set_reg_val(id, *val);
676 break;
677 default:
678 r = -EINVAL;
679 break;
680 }
681 }
682
683 return r;
684 }
685
686 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
687 {
688 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
689 }
690
691 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
692 {
693 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
694 }
695
696 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
697 {
698 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
699 }
700 EXPORT_SYMBOL_GPL(kvmppc_set_msr);
701
702 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
703 {
704 return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu);
705 }
706
707 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
708 struct kvm_translation *tr)
709 {
710 return 0;
711 }
712
713 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
714 struct kvm_guest_debug *dbg)
715 {
716 vcpu->guest_debug = dbg->control;
717 return 0;
718 }
719
720 void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
721 {
722 kvmppc_core_queue_dec(vcpu);
723 kvm_vcpu_kick(vcpu);
724 }
725
726 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
727 {
728 return kvm->arch.kvm_ops->vcpu_create(kvm, id);
729 }
730
731 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
732 {
733 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
734 }
735
736 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
737 {
738 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
739 }
740
741 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
742 {
743 return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
744 }
745
746 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
747 struct kvm_memory_slot *dont)
748 {
749 kvm->arch.kvm_ops->free_memslot(free, dont);
750 }
751
752 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
753 unsigned long npages)
754 {
755 return kvm->arch.kvm_ops->create_memslot(slot, npages);
756 }
757
758 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
759 {
760 kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
761 }
762
763 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
764 struct kvm_memory_slot *memslot,
765 const struct kvm_userspace_memory_region *mem)
766 {
767 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem);
768 }
769
770 void kvmppc_core_commit_memory_region(struct kvm *kvm,
771 const struct kvm_userspace_memory_region *mem,
772 const struct kvm_memory_slot *old,
773 const struct kvm_memory_slot *new)
774 {
775 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new);
776 }
777
778 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
779 {
780 return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
781 }
782 EXPORT_SYMBOL_GPL(kvm_unmap_hva);
783
784 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
785 {
786 return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
787 }
788
789 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end)
790 {
791 return kvm->arch.kvm_ops->age_hva(kvm, start, end);
792 }
793
794 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
795 {
796 return kvm->arch.kvm_ops->test_age_hva(kvm, hva);
797 }
798
799 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
800 {
801 kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte);
802 }
803
804 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
805 {
806 vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
807 }
808
809 int kvmppc_core_init_vm(struct kvm *kvm)
810 {
811
812 #ifdef CONFIG_PPC64
813 INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables);
814 INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
815 #endif
816
817 return kvm->arch.kvm_ops->init_vm(kvm);
818 }
819
820 void kvmppc_core_destroy_vm(struct kvm *kvm)
821 {
822 kvm->arch.kvm_ops->destroy_vm(kvm);
823
824 #ifdef CONFIG_PPC64
825 kvmppc_rtas_tokens_free(kvm);
826 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
827 #endif
828 }
829
830 int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
831 {
832 unsigned long size = kvmppc_get_gpr(vcpu, 4);
833 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
834 u64 buf;
835 int srcu_idx;
836 int ret;
837
838 if (!is_power_of_2(size) || (size > sizeof(buf)))
839 return H_TOO_HARD;
840
841 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
842 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
843 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
844 if (ret != 0)
845 return H_TOO_HARD;
846
847 switch (size) {
848 case 1:
849 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf);
850 break;
851
852 case 2:
853 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf));
854 break;
855
856 case 4:
857 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf));
858 break;
859
860 case 8:
861 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf));
862 break;
863
864 default:
865 BUG();
866 }
867
868 return H_SUCCESS;
869 }
870 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load);
871
872 int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
873 {
874 unsigned long size = kvmppc_get_gpr(vcpu, 4);
875 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
876 unsigned long val = kvmppc_get_gpr(vcpu, 6);
877 u64 buf;
878 int srcu_idx;
879 int ret;
880
881 switch (size) {
882 case 1:
883 *(u8 *)&buf = val;
884 break;
885
886 case 2:
887 *(__be16 *)&buf = cpu_to_be16(val);
888 break;
889
890 case 4:
891 *(__be32 *)&buf = cpu_to_be32(val);
892 break;
893
894 case 8:
895 *(__be64 *)&buf = cpu_to_be64(val);
896 break;
897
898 default:
899 return H_TOO_HARD;
900 }
901
902 srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
903 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
904 srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
905 if (ret != 0)
906 return H_TOO_HARD;
907
908 return H_SUCCESS;
909 }
910 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store);
911
912 int kvmppc_core_check_processor_compat(void)
913 {
914 /*
915 * We always return 0 for book3s. We check
916 * for compatibility while loading the HV
917 * or PR module
918 */
919 return 0;
920 }
921
922 int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
923 {
924 return kvm->arch.kvm_ops->hcall_implemented(hcall);
925 }
926
927 static int kvmppc_book3s_init(void)
928 {
929 int r;
930
931 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
932 if (r)
933 return r;
934 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
935 r = kvmppc_book3s_init_pr();
936 #endif
937 return r;
938
939 }
940
941 static void kvmppc_book3s_exit(void)
942 {
943 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
944 kvmppc_book3s_exit_pr();
945 #endif
946 kvm_exit();
947 }
948
949 module_init(kvmppc_book3s_init);
950 module_exit(kvmppc_book3s_exit);
951
952 /* On 32bit this is our one and only kernel module */
953 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
954 MODULE_ALIAS_MISCDEV(KVM_MINOR);
955 MODULE_ALIAS("devname:kvm");
956 #endif
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