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KVM: PPC: PR: Fill pvinfo hcall instructions in big endian
[linux-2.6-block.git] / arch / powerpc / kvm / book3s.c
CommitLineData
2f4cf5e4
AG		 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>
66b15db6 19#include <linux/export.h>
329d20ba 20#include <linux/slab.h>
398a76c6
AG		 21#include <linux/module.h>
22#include <linux/miscdevice.h>
2f4cf5e4
AG		 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>
149dbdb1 33#include <asm/page.h>
5a0e3ad6 34#include <linux/gfp.h>
2f4cf5e4
AG		 35#include <linux/sched.h>
36#include <linux/vmalloc.h>
9fb244a2 37#include <linux/highmem.h>
2f4cf5e4 38
cbbc58d4 39#include "book3s.h"
c4befc58
PM		 40#include "trace.h"
41
2f4cf5e4
AG		 42#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
43
44/* #define EXIT_DEBUG */
07b0907d 45
2f4cf5e4
AG		 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_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
67void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu)
68{
69}
70
71void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
72{
73}
74
699cc876
AK		 75static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
76{
a78b55d1 77 if (!is_kvmppc_hv_enabled(vcpu->kvm))
699cc876
AK		 78 return to_book3s(vcpu)->hior;
79 return 0;
80}
81
82static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
83 unsigned long pending_now, unsigned long old_pending)
84{
a78b55d1 85 if (is_kvmppc_hv_enabled(vcpu->kvm))
699cc876
AK		 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
93static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
94{
95 ulong crit_raw;
96 ulong crit_r1;
97 bool crit;
98
a78b55d1 99 if (is_kvmppc_hv_enabled(vcpu->kvm))
699cc876
AK		 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
2f4cf5e4
AG		 119void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
120{
de7906c3
AG		 121 vcpu->arch.shared->srr0 = kvmppc_get_pc(vcpu);
122 vcpu->arch.shared->srr1 = vcpu->arch.shared->msr | flags;
f05ed4d5 123 kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
2f4cf5e4
AG		 124 vcpu->arch.mmu.reset_msr(vcpu);
125}
126
583617b7 127static int kvmppc_book3s_vec2irqprio(unsigned int vec)
2f4cf5e4
AG		 128{
129 unsigned int prio;
130
2f4cf5e4
AG		 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;
17bd1580 139 case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break;
2f4cf5e4
AG		 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
583617b7
AG		 151 return prio;
152}
153
bc5ad3f3 154void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
7706664d
AG		 155 unsigned int vec)
156{
f05ed4d5
PM		 157 unsigned long old_pending = vcpu->arch.pending_exceptions;
158
7706664d
AG		 159 clear_bit(kvmppc_book3s_vec2irqprio(vec),
160 &vcpu->arch.pending_exceptions);
9ee18b1e 161
f05ed4d5
PM		 162 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
163 old_pending);
7706664d
AG		 164}
165
583617b7
AG		 166void 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);
2f4cf5e4
AG		 172#ifdef EXIT_DEBUG
173 printk(KERN_INFO "Queueing interrupt %x\n", vec);
174#endif
175}
2ba9f0d8 176EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
2f4cf5e4 177
25a8a02d 178void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
2f4cf5e4 179{
3cf658b6
PM		 180 /* might as well deliver this straight away */
181 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
2f4cf5e4 182}
2ba9f0d8 183EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
2f4cf5e4
AG		 184
185void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
186{
187 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
188}
2ba9f0d8 189EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
2f4cf5e4
AG		 190
191int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
192{
44075d95 193 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
2f4cf5e4 194}
2ba9f0d8 195EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
2f4cf5e4 196
7706664d
AG		 197void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
198{
199 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
200}
2ba9f0d8 201EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
7706664d 202
2f4cf5e4
AG		 203void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
204 struct kvm_interrupt *irq)
205{
17bd1580
AG		 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);
2f4cf5e4
AG		 212}
213
4fe27d2a 214void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
18978768
AG		 215{
216 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
17bd1580 217 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);
18978768
AG		 218}
219
2f4cf5e4
AG		 220int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority)
221{
222 int deliver = 1;
223 int vec = 0;
f05ed4d5 224 bool crit = kvmppc_critical_section(vcpu);
2f4cf5e4
AG		 225
226 switch (priority) {
227 case BOOK3S_IRQPRIO_DECREMENTER:
5c6cedf4 228 deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit;
2f4cf5e4
AG		 229 vec = BOOK3S_INTERRUPT_DECREMENTER;
230 break;
231 case BOOK3S_IRQPRIO_EXTERNAL:
17bd1580 232 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
5c6cedf4 233 deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit;
2f4cf5e4
AG		 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)
3cf658b6 289 kvmppc_inject_interrupt(vcpu, vec, 0);
2f4cf5e4
AG		 290
291 return deliver;
292}
293
17bd1580
AG		 294/*
295 * This function determines if an irqprio should be cleared once issued.
296 */
297static 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
a8e4ef84 311int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
2f4cf5e4
AG		 312{
313 unsigned long *pending = &vcpu->arch.pending_exceptions;
90bba358 314 unsigned long old_pending = vcpu->arch.pending_exceptions;
2f4cf5e4
AG		 315 unsigned int priority;
316
2f4cf5e4
AG		 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);
ada7ba17 322 while (priority < BOOK3S_IRQPRIO_MAX) {
7706664d 323 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
17bd1580 324 clear_irqprio(vcpu, priority)) {
2f4cf5e4
AG		 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 }
90bba358
AG		 333
334 /* Tell the guest about our interrupt status */
f05ed4d5 335 kvmppc_update_int_pending(vcpu, *pending, old_pending);
a8e4ef84
AG		 336
337 return 0;
2f4cf5e4 338}
2ba9f0d8 339EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
2f4cf5e4 340
93b159b4
PM		 341pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn, bool writing,
342 bool *writable)
e8508940
AG		 343{
344 ulong mp_pa = vcpu->arch.magic_page_pa;
345
bbcc9c06
BH		 346 if (!(vcpu->arch.shared->msr & MSR_SF))
347 mp_pa = (uint32_t)mp_pa;
348
e8508940
AG		 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));
93b159b4
PM		 358 if (writable)
359 *writable = true;
e8508940
AG		 360 return pfn;
361 }
362
93b159b4 363 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
e8508940 364}
2ba9f0d8 365EXPORT_SYMBOL_GPL(kvmppc_gfn_to_pfn);
e8508940 366
2f4cf5e4 367static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data,
93b159b4 368 bool iswrite, struct kvmppc_pte *pte)
2f4cf5e4 369{
666e7252 370 int relocated = (vcpu->arch.shared->msr & (data ? MSR_DR : MSR_IR));
2f4cf5e4
AG		 371 int r;
372
373 if (relocated) {
93b159b4 374 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
2f4cf5e4
AG		 375 } else {
376 pte->eaddr = eaddr;
28e83b4f 377 pte->raddr = eaddr & KVM_PAM;
3eeafd7d 378 pte->vpage = VSID_REAL | eaddr >> 12;
2f4cf5e4
AG		 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
388static hva_t kvmppc_bad_hva(void)
389{
390 return PAGE_OFFSET;
391}
392
393static 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);
409err:
410 return kvmppc_bad_hva();
411}
412
5467a97d
AG		 413int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
414 bool data)
2f4cf5e4
AG		 415{
416 struct kvmppc_pte pte;
2f4cf5e4
AG		 417
418 vcpu->stat.st++;
419
93b159b4 420 if (kvmppc_xlate(vcpu, *eaddr, data, true, &pte))
9fb244a2 421 return -ENOENT;
5467a97d
AG		 422
423 *eaddr = pte.raddr;
2f4cf5e4 424
9fb244a2
AG		 425 if (!pte.may_write)
426 return -EPERM;
2f4cf5e4 427
9fb244a2
AG		 428 if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size))
429 return EMULATE_DO_MMIO;
2f4cf5e4 430
5467a97d 431 return EMULATE_DONE;
2f4cf5e4 432}
2ba9f0d8 433EXPORT_SYMBOL_GPL(kvmppc_st);
2f4cf5e4 434
5467a97d 435int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
2f4cf5e4
AG		 436 bool data)
437{
438 struct kvmppc_pte pte;
5467a97d 439 hva_t hva = *eaddr;
2f4cf5e4
AG		 440
441 vcpu->stat.ld++;
442
93b159b4 443 if (kvmppc_xlate(vcpu, *eaddr, data, false, &pte))
5467a97d
AG		 444 goto nopte;
445
446 *eaddr = pte.raddr;
2f4cf5e4
AG		 447
448 hva = kvmppc_pte_to_hva(vcpu, &pte, true);
449 if (kvm_is_error_hva(hva))
5467a97d 450 goto mmio;
2f4cf5e4
AG		 451
452 if (copy_from_user(ptr, (void __user *)hva, size)) {
453 printk(KERN_INFO "kvmppc_ld at 0x%lx failed\n", hva);
5467a97d 454 goto mmio;
2f4cf5e4
AG		 455 }
456
5467a97d 457 return EMULATE_DONE;
2f4cf5e4 458
5467a97d 459nopte:
2f4cf5e4 460 return -ENOENT;
5467a97d
AG		 461mmio:
462 return EMULATE_DO_MMIO;
2f4cf5e4 463}
2ba9f0d8 464EXPORT_SYMBOL_GPL(kvmppc_ld);
2f4cf5e4 465
2f4cf5e4
AG		 466int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
467{
468 return 0;
469}
470
f61c94bb
BB		 471int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
472{
473 return 0;
474}
475
476void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
477{
478}
479
3a167bea
AK		 480int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
481 struct kvm_sregs *sregs)
482{
cbbc58d4 483 return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
3a167bea
AK		 484}
485
486int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
487 struct kvm_sregs *sregs)
488{
cbbc58d4 489 return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
3a167bea
AK		 490}
491
2f4cf5e4
AG		 492int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
493{
494 int i;
495
c7f38f46 496 regs->pc = kvmppc_get_pc(vcpu);
992b5b29 497 regs->cr = kvmppc_get_cr(vcpu);
c7f38f46
AG		 498 regs->ctr = kvmppc_get_ctr(vcpu);
499 regs->lr = kvmppc_get_lr(vcpu);
992b5b29 500 regs->xer = kvmppc_get_xer(vcpu);
666e7252 501 regs->msr = vcpu->arch.shared->msr;
de7906c3
AG		 502 regs->srr0 = vcpu->arch.shared->srr0;
503 regs->srr1 = vcpu->arch.shared->srr1;
2f4cf5e4 504 regs->pid = vcpu->arch.pid;
a73a9599
AG		 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;
b5904972
SW		 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;
2f4cf5e4
AG		 513
514 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
8e5b26b5 515 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
2f4cf5e4
AG		 516
517 return 0;
518}
519
520int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
521{
522 int i;
523
c7f38f46 524 kvmppc_set_pc(vcpu, regs->pc);
992b5b29 525 kvmppc_set_cr(vcpu, regs->cr);
c7f38f46
AG		 526 kvmppc_set_ctr(vcpu, regs->ctr);
527 kvmppc_set_lr(vcpu, regs->lr);
992b5b29 528 kvmppc_set_xer(vcpu, regs->xer);
2f4cf5e4 529 kvmppc_set_msr(vcpu, regs->msr);
de7906c3
AG		 530 vcpu->arch.shared->srr0 = regs->srr0;
531 vcpu->arch.shared->srr1 = regs->srr1;
a73a9599
AG		 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;
b5904972
SW		 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;
2f4cf5e4 540
8e5b26b5
AG		 541 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
542 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
2f4cf5e4
AG		 543
544 return 0;
545}
546
2f4cf5e4
AG		 547int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
548{
549 return -ENOTSUPP;
550}
551
552int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
553{
554 return -ENOTSUPP;
555}
556
a136a8bd
PM		 557int 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;
a8bd19ef 562 long int i;
a136a8bd
PM		 563
564 size = one_reg_size(reg->id);
565 if (size > sizeof(val))
566 return -EINVAL;
567
cbbc58d4 568 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, reg->id, &val);
a136a8bd
PM		 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;
a8bd19ef
PM		 578 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
579 i = reg->id - KVM_REG_PPC_FPR0;
efff1912 580 val = get_reg_val(reg->id, VCPU_FPR(vcpu, i));
a8bd19ef
PM		 581 break;
582 case KVM_REG_PPC_FPSCR:
efff1912 583 val = get_reg_val(reg->id, vcpu->arch.fp.fpscr);
a8bd19ef
PM		 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 }
efff1912 591 val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
a8bd19ef
PM		 592 break;
593 case KVM_REG_PPC_VSCR:
594 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
595 r = -ENXIO;
596 break;
597 }
efff1912 598 val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
a8bd19ef 599 break;
c0867fd5
PM		 600 case KVM_REG_PPC_VRSAVE:
601 val = get_reg_val(reg->id, vcpu->arch.vrsave);
602 break;
a8bd19ef 603#endif /* CONFIG_ALTIVEC */
efff1912
PM		 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 */
8c32a2ea
BB		 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 }
8b78645c
PM		 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 */
a136a8bd
PM		 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
644int 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;
a8bd19ef 649 long int i;
a136a8bd
PM		 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
cbbc58d4 658 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, reg->id, &val);
a136a8bd
PM		 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;
a8bd19ef
PM		 668 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
669 i = reg->id - KVM_REG_PPC_FPR0;
efff1912 670 VCPU_FPR(vcpu, i) = set_reg_val(reg->id, val);
a8bd19ef
PM		 671 break;
672 case KVM_REG_PPC_FPSCR:
efff1912 673 vcpu->arch.fp.fpscr = set_reg_val(reg->id, val);
a8bd19ef
PM		 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 }
efff1912 681 vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
a8bd19ef
PM		 682 break;
683 case KVM_REG_PPC_VSCR:
684 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
685 r = -ENXIO;
686 break;
687 }
efff1912 688 vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
a8bd19ef 689 break;
c0867fd5
PM		 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;
a8bd19ef 697#endif /* CONFIG_ALTIVEC */
efff1912
PM		 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 */
8b78645c
PM		 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 */
a136a8bd
PM		 719 default:
720 r = -EINVAL;
721 break;
722 }
723 }
724
725 return r;
726}
727
3a167bea
AK		 728void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
729{
cbbc58d4 730 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
3a167bea
AK		 731}
732
733void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
734{
cbbc58d4 735 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
3a167bea
AK		 736}
737
738void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
739{
cbbc58d4 740 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
3a167bea 741}
2ba9f0d8 742EXPORT_SYMBOL_GPL(kvmppc_set_msr);
3a167bea
AK		 743
744int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
745{
cbbc58d4 746 return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu);
3a167bea
AK		 747}
748
2f4cf5e4
AG		 749int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
750 struct kvm_translation *tr)
751{
752 return 0;
753}
754
092d62ee
BB		 755int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
756 struct kvm_guest_debug *dbg)
757{
758 return -EINVAL;
759}
760
dfd4d47e
SW		 761void 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}
3a167bea
AK		 768
769struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
770{
cbbc58d4 771 return kvm->arch.kvm_ops->vcpu_create(kvm, id);
3a167bea
AK		 772}
773
774void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
775{
cbbc58d4 776 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
3a167bea
AK		 777}
778
779int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
780{
cbbc58d4 781 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
3a167bea
AK		 782}
783
784int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
785{
cbbc58d4 786 return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
3a167bea
AK		 787}
788
5587027c 789void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
3a167bea
AK		 790 struct kvm_memory_slot *dont)
791{
cbbc58d4 792 kvm->arch.kvm_ops->free_memslot(free, dont);
3a167bea
AK		 793}
794
5587027c 795int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
3a167bea
AK		 796 unsigned long npages)
797{
cbbc58d4 798 return kvm->arch.kvm_ops->create_memslot(slot, npages);
3a167bea
AK		 799}
800
801void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
802{
cbbc58d4 803 kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
3a167bea
AK		 804}
805
806int kvmppc_core_prepare_memory_region(struct kvm *kvm,
807 struct kvm_memory_slot *memslot,
808 struct kvm_userspace_memory_region *mem)
809{
cbbc58d4 810 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem);
3a167bea
AK		 811}
812
813void kvmppc_core_commit_memory_region(struct kvm *kvm,
814 struct kvm_userspace_memory_region *mem,
815 const struct kvm_memory_slot *old)
816{
cbbc58d4 817 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old);
3a167bea
AK		 818}
819
820int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
821{
cbbc58d4 822 return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
3a167bea 823}
2ba9f0d8 824EXPORT_SYMBOL_GPL(kvm_unmap_hva);
3a167bea
AK		 825
826int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
827{
cbbc58d4 828 return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
3a167bea
AK		 829}
830
831int kvm_age_hva(struct kvm *kvm, unsigned long hva)
832{
cbbc58d4 833 return kvm->arch.kvm_ops->age_hva(kvm, hva);
3a167bea
AK		 834}
835
836int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
837{
cbbc58d4 838 return kvm->arch.kvm_ops->test_age_hva(kvm, hva);
3a167bea
AK		 839}
840
841void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
842{
cbbc58d4 843 kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte);
3a167bea
AK		 844}
845
846void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
847{
cbbc58d4 848 vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
3a167bea
AK		 849}
850
851int 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
cbbc58d4 859 return kvm->arch.kvm_ops->init_vm(kvm);
3a167bea
AK		 860}
861
862void kvmppc_core_destroy_vm(struct kvm *kvm)
863{
cbbc58d4 864 kvm->arch.kvm_ops->destroy_vm(kvm);
3a167bea
AK		 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
872int kvmppc_core_check_processor_compat(void)
873{
cbbc58d4
AK		 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
882static 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
896static void kvmppc_book3s_exit(void)
897{
898#ifdef CONFIG_KVM_BOOK3S_32
899 kvmppc_book3s_exit_pr();
900#endif
901 kvm_exit();
3a167bea 902}
cbbc58d4
AK		 903
904module_init(kvmppc_book3s_init);
905module_exit(kvmppc_book3s_exit);
398a76c6
AG		 906
907/* On 32bit this is our one and only kernel module */
908#ifdef CONFIG_KVM_BOOK3S_32
909MODULE_ALIAS_MISCDEV(KVM_MINOR);
910MODULE_ALIAS("devname:kvm");
911#endif
Linux 6.x block layer and io_uring tree(s)