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Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
[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
c01e3f66
AG		 75void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
76{
77 if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
78 ulong pc = kvmppc_get_pc(vcpu);
79 if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
80 kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
81 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
82 }
83}
84EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
85
699cc876
AK		 86static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
87{
a78b55d1 88 if (!is_kvmppc_hv_enabled(vcpu->kvm))
699cc876
AK		 89 return to_book3s(vcpu)->hior;
90 return 0;
91}
92
93static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
94 unsigned long pending_now, unsigned long old_pending)
95{
a78b55d1 96 if (is_kvmppc_hv_enabled(vcpu->kvm))
699cc876
AK		 97 return;
98 if (pending_now)
5deb8e7a 99 kvmppc_set_int_pending(vcpu, 1);
699cc876 100 else if (old_pending)
5deb8e7a 101 kvmppc_set_int_pending(vcpu, 0);
699cc876
AK		 102}
103
104static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
105{
106 ulong crit_raw;
107 ulong crit_r1;
108 bool crit;
109
a78b55d1 110 if (is_kvmppc_hv_enabled(vcpu->kvm))
699cc876
AK		 111 return false;
112
5deb8e7a 113 crit_raw = kvmppc_get_critical(vcpu);
699cc876
AK		 114 crit_r1 = kvmppc_get_gpr(vcpu, 1);
115
116 /* Truncate crit indicators in 32 bit mode */
5deb8e7a 117 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
699cc876
AK		 118 crit_raw &= 0xffffffff;
119 crit_r1 &= 0xffffffff;
120 }
121
122 /* Critical section when crit == r1 */
123 crit = (crit_raw == crit_r1);
124 /* ... and we're in supervisor mode */
5deb8e7a 125 crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR);
699cc876
AK		 126
127 return crit;
128}
129
2f4cf5e4
AG		 130void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
131{
c01e3f66 132 kvmppc_unfixup_split_real(vcpu);
5deb8e7a
AG		 133 kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu));
134 kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags);
f05ed4d5 135 kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
2f4cf5e4
AG		 136 vcpu->arch.mmu.reset_msr(vcpu);
137}
138
583617b7 139static int kvmppc_book3s_vec2irqprio(unsigned int vec)
2f4cf5e4
AG		 140{
141 unsigned int prio;
142
2f4cf5e4
AG		 143 switch (vec) {
144 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break;
145 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break;
146 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break;
147 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break;
148 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break;
149 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break;
150 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break;
17bd1580 151 case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break;
2f4cf5e4
AG		 152 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break;
153 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break;
154 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break;
155 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break;
156 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break;
157 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break;
158 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break;
159 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break;
616dff86 160 case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; break;
2f4cf5e4
AG		 161 default: prio = BOOK3S_IRQPRIO_MAX; break;
162 }
163
583617b7
AG		 164 return prio;
165}
166
bc5ad3f3 167void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
7706664d
AG		 168 unsigned int vec)
169{
f05ed4d5
PM		 170 unsigned long old_pending = vcpu->arch.pending_exceptions;
171
7706664d
AG		 172 clear_bit(kvmppc_book3s_vec2irqprio(vec),
173 &vcpu->arch.pending_exceptions);
9ee18b1e 174
f05ed4d5
PM		 175 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
176 old_pending);
7706664d
AG		 177}
178
583617b7
AG		 179void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
180{
181 vcpu->stat.queue_intr++;
182
183 set_bit(kvmppc_book3s_vec2irqprio(vec),
184 &vcpu->arch.pending_exceptions);
2f4cf5e4
AG		 185#ifdef EXIT_DEBUG
186 printk(KERN_INFO "Queueing interrupt %x\n", vec);
187#endif
188}
2ba9f0d8 189EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
2f4cf5e4 190
25a8a02d 191void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
2f4cf5e4 192{
3cf658b6
PM		 193 /* might as well deliver this straight away */
194 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
2f4cf5e4 195}
2ba9f0d8 196EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
2f4cf5e4
AG		 197
198void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
199{
200 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
201}
2ba9f0d8 202EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
2f4cf5e4
AG		 203
204int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
205{
44075d95 206 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
2f4cf5e4 207}
2ba9f0d8 208EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
2f4cf5e4 209
7706664d
AG		 210void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
211{
212 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
213}
2ba9f0d8 214EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
7706664d 215
2f4cf5e4
AG		 216void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
217 struct kvm_interrupt *irq)
218{
17bd1580
AG		 219 unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL;
220
221 if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
222 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL;
223
224 kvmppc_book3s_queue_irqprio(vcpu, vec);
2f4cf5e4
AG		 225}
226
4fe27d2a 227void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
18978768
AG		 228{
229 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
17bd1580 230 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);
18978768
AG		 231}
232
8de12015
AG		 233void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar,
234 ulong flags)
235{
236 kvmppc_set_dar(vcpu, dar);
237 kvmppc_set_dsisr(vcpu, flags);
238 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE);
239}
240
241void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags)
242{
243 u64 msr = kvmppc_get_msr(vcpu);
244 msr &= ~(SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
245 msr |= flags & (SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
246 kvmppc_set_msr_fast(vcpu, msr);
247 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE);
248}
249
2f4cf5e4
AG		 250int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority)
251{
252 int deliver = 1;
253 int vec = 0;
f05ed4d5 254 bool crit = kvmppc_critical_section(vcpu);
2f4cf5e4
AG		 255
256 switch (priority) {
257 case BOOK3S_IRQPRIO_DECREMENTER:
5deb8e7a 258 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
2f4cf5e4
AG		 259 vec = BOOK3S_INTERRUPT_DECREMENTER;
260 break;
261 case BOOK3S_IRQPRIO_EXTERNAL:
17bd1580 262 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
5deb8e7a 263 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
2f4cf5e4
AG		 264 vec = BOOK3S_INTERRUPT_EXTERNAL;
265 break;
266 case BOOK3S_IRQPRIO_SYSTEM_RESET:
267 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
268 break;
269 case BOOK3S_IRQPRIO_MACHINE_CHECK:
270 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
271 break;
272 case BOOK3S_IRQPRIO_DATA_STORAGE:
273 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
274 break;
275 case BOOK3S_IRQPRIO_INST_STORAGE:
276 vec = BOOK3S_INTERRUPT_INST_STORAGE;
277 break;
278 case BOOK3S_IRQPRIO_DATA_SEGMENT:
279 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
280 break;
281 case BOOK3S_IRQPRIO_INST_SEGMENT:
282 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
283 break;
284 case BOOK3S_IRQPRIO_ALIGNMENT:
285 vec = BOOK3S_INTERRUPT_ALIGNMENT;
286 break;
287 case BOOK3S_IRQPRIO_PROGRAM:
288 vec = BOOK3S_INTERRUPT_PROGRAM;
289 break;
290 case BOOK3S_IRQPRIO_VSX:
291 vec = BOOK3S_INTERRUPT_VSX;
292 break;
293 case BOOK3S_IRQPRIO_ALTIVEC:
294 vec = BOOK3S_INTERRUPT_ALTIVEC;
295 break;
296 case BOOK3S_IRQPRIO_FP_UNAVAIL:
297 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
298 break;
299 case BOOK3S_IRQPRIO_SYSCALL:
300 vec = BOOK3S_INTERRUPT_SYSCALL;
301 break;
302 case BOOK3S_IRQPRIO_DEBUG:
303 vec = BOOK3S_INTERRUPT_TRACE;
304 break;
305 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
306 vec = BOOK3S_INTERRUPT_PERFMON;
307 break;
616dff86
AG		 308 case BOOK3S_IRQPRIO_FAC_UNAVAIL:
309 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL;
310 break;
2f4cf5e4
AG		 311 default:
312 deliver = 0;
313 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
314 break;
315 }
316
317#if 0
318 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
319#endif
320
321 if (deliver)
3cf658b6 322 kvmppc_inject_interrupt(vcpu, vec, 0);
2f4cf5e4
AG		 323
324 return deliver;
325}
326
17bd1580
AG		 327/*
328 * This function determines if an irqprio should be cleared once issued.
329 */
330static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
331{
332 switch (priority) {
333 case BOOK3S_IRQPRIO_DECREMENTER:
334 /* DEC interrupts get cleared by mtdec */
335 return false;
336 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
337 /* External interrupts get cleared by userspace */
338 return false;
339 }
340
341 return true;
342}
343
a8e4ef84 344int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
2f4cf5e4
AG		 345{
346 unsigned long *pending = &vcpu->arch.pending_exceptions;
90bba358 347 unsigned long old_pending = vcpu->arch.pending_exceptions;
2f4cf5e4
AG		 348 unsigned int priority;
349
2f4cf5e4
AG		 350#ifdef EXIT_DEBUG
351 if (vcpu->arch.pending_exceptions)
352 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
353#endif
354 priority = __ffs(*pending);
ada7ba17 355 while (priority < BOOK3S_IRQPRIO_MAX) {
7706664d 356 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
17bd1580 357 clear_irqprio(vcpu, priority)) {
2f4cf5e4
AG		 358 clear_bit(priority, &vcpu->arch.pending_exceptions);
359 break;
360 }
361
362 priority = find_next_bit(pending,
363 BITS_PER_BYTE * sizeof(*pending),
364 priority + 1);
365 }
90bba358
AG		 366
367 /* Tell the guest about our interrupt status */
f05ed4d5 368 kvmppc_update_int_pending(vcpu, *pending, old_pending);
a8e4ef84
AG		 369
370 return 0;
2f4cf5e4 371}
2ba9f0d8 372EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
2f4cf5e4 373
89b68c96 374pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
93b159b4 375 bool *writable)
e8508940 376{
89b68c96
AG		 377 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
378 gfn_t gfn = gpa >> PAGE_SHIFT;
e8508940 379
5deb8e7a 380 if (!(kvmppc_get_msr(vcpu) & MSR_SF))
bbcc9c06
BH		 381 mp_pa = (uint32_t)mp_pa;
382
e8508940 383 /* Magic page override */
89b68c96
AG		 384 gpa &= ~0xFFFULL;
385 if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
e8508940
AG		 386 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
387 pfn_t pfn;
388
389 pfn = (pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
390 get_page(pfn_to_page(pfn));
93b159b4
PM		 391 if (writable)
392 *writable = true;
e8508940
AG		 393 return pfn;
394 }
395
93b159b4 396 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
e8508940 397}
89b68c96 398EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
e8508940 399
7d15c06f
AG		 400int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
401 enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
2f4cf5e4 402{
7d15c06f
AG		 403 bool data = (xlid == XLATE_DATA);
404 bool iswrite = (xlrw == XLATE_WRITE);
5deb8e7a 405 int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
2f4cf5e4
AG		 406 int r;
407
408 if (relocated) {
93b159b4 409 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
2f4cf5e4
AG		 410 } else {
411 pte->eaddr = eaddr;
28e83b4f 412 pte->raddr = eaddr & KVM_PAM;
3eeafd7d 413 pte->vpage = VSID_REAL | eaddr >> 12;
2f4cf5e4
AG		 414 pte->may_read = true;
415 pte->may_write = true;
416 pte->may_execute = true;
417 r = 0;
c01e3f66
AG		 418
419 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
420 !data) {
421 if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
422 ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
423 pte->raddr &= ~SPLIT_HACK_MASK;
424 }
2f4cf5e4
AG		 425 }
426
427 return r;
428}
429
51f04726
MC		 430int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type,
431 u32 *inst)
432{
433 ulong pc = kvmppc_get_pc(vcpu);
434 int r;
435
436 if (type == INST_SC)
437 pc -= 4;
438
439 r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false);
440 if (r == EMULATE_DONE)
441 return r;
442 else
443 return EMULATE_AGAIN;
444}
445EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
446
2f4cf5e4
AG		 447int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
448{
449 return 0;
450}
451
f61c94bb
BB		 452int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
453{
454 return 0;
455}
456
457void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
458{
459}
460
3a167bea
AK		 461int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
462 struct kvm_sregs *sregs)
463{
cbbc58d4 464 return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
3a167bea
AK		 465}
466
467int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
468 struct kvm_sregs *sregs)
469{
cbbc58d4 470 return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
3a167bea
AK		 471}
472
2f4cf5e4
AG		 473int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
474{
475 int i;
476
c7f38f46 477 regs->pc = kvmppc_get_pc(vcpu);
992b5b29 478 regs->cr = kvmppc_get_cr(vcpu);
c7f38f46
AG		 479 regs->ctr = kvmppc_get_ctr(vcpu);
480 regs->lr = kvmppc_get_lr(vcpu);
992b5b29 481 regs->xer = kvmppc_get_xer(vcpu);
5deb8e7a
AG		 482 regs->msr = kvmppc_get_msr(vcpu);
483 regs->srr0 = kvmppc_get_srr0(vcpu);
484 regs->srr1 = kvmppc_get_srr1(vcpu);
2f4cf5e4 485 regs->pid = vcpu->arch.pid;
5deb8e7a
AG		 486 regs->sprg0 = kvmppc_get_sprg0(vcpu);
487 regs->sprg1 = kvmppc_get_sprg1(vcpu);
488 regs->sprg2 = kvmppc_get_sprg2(vcpu);
489 regs->sprg3 = kvmppc_get_sprg3(vcpu);
490 regs->sprg4 = kvmppc_get_sprg4(vcpu);
491 regs->sprg5 = kvmppc_get_sprg5(vcpu);
492 regs->sprg6 = kvmppc_get_sprg6(vcpu);
493 regs->sprg7 = kvmppc_get_sprg7(vcpu);
2f4cf5e4
AG		 494
495 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
8e5b26b5 496 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
2f4cf5e4
AG		 497
498 return 0;
499}
500
501int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
502{
503 int i;
504
c7f38f46 505 kvmppc_set_pc(vcpu, regs->pc);
992b5b29 506 kvmppc_set_cr(vcpu, regs->cr);
c7f38f46
AG		 507 kvmppc_set_ctr(vcpu, regs->ctr);
508 kvmppc_set_lr(vcpu, regs->lr);
992b5b29 509 kvmppc_set_xer(vcpu, regs->xer);
2f4cf5e4 510 kvmppc_set_msr(vcpu, regs->msr);
5deb8e7a
AG		 511 kvmppc_set_srr0(vcpu, regs->srr0);
512 kvmppc_set_srr1(vcpu, regs->srr1);
513 kvmppc_set_sprg0(vcpu, regs->sprg0);
514 kvmppc_set_sprg1(vcpu, regs->sprg1);
515 kvmppc_set_sprg2(vcpu, regs->sprg2);
516 kvmppc_set_sprg3(vcpu, regs->sprg3);
517 kvmppc_set_sprg4(vcpu, regs->sprg4);
518 kvmppc_set_sprg5(vcpu, regs->sprg5);
519 kvmppc_set_sprg6(vcpu, regs->sprg6);
520 kvmppc_set_sprg7(vcpu, regs->sprg7);
2f4cf5e4 521
8e5b26b5
AG		 522 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
523 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
2f4cf5e4
AG		 524
525 return 0;
526}
527
2f4cf5e4
AG		 528int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
529{
530 return -ENOTSUPP;
531}
532
533int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
534{
535 return -ENOTSUPP;
536}
537
a136a8bd
PM		 538int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
539{
540 int r;
541 union kvmppc_one_reg val;
542 int size;
a8bd19ef 543 long int i;
a136a8bd
PM		 544
545 size = one_reg_size(reg->id);
546 if (size > sizeof(val))
547 return -EINVAL;
548
cbbc58d4 549 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, reg->id, &val);
a136a8bd
PM		 550 if (r == -EINVAL) {
551 r = 0;
552 switch (reg->id) {
553 case KVM_REG_PPC_DAR:
5deb8e7a 554 val = get_reg_val(reg->id, kvmppc_get_dar(vcpu));
a136a8bd
PM		 555 break;
556 case KVM_REG_PPC_DSISR:
5deb8e7a 557 val = get_reg_val(reg->id, kvmppc_get_dsisr(vcpu));
a136a8bd 558 break;
a8bd19ef
PM		 559 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
560 i = reg->id - KVM_REG_PPC_FPR0;
efff1912 561 val = get_reg_val(reg->id, VCPU_FPR(vcpu, i));
a8bd19ef
PM		 562 break;
563 case KVM_REG_PPC_FPSCR:
efff1912 564 val = get_reg_val(reg->id, vcpu->arch.fp.fpscr);
a8bd19ef
PM		 565 break;
566#ifdef CONFIG_ALTIVEC
567 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
568 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
569 r = -ENXIO;
570 break;
571 }
efff1912 572 val.vval = vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0];
a8bd19ef
PM		 573 break;
574 case KVM_REG_PPC_VSCR:
575 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
576 r = -ENXIO;
577 break;
578 }
efff1912 579 val = get_reg_val(reg->id, vcpu->arch.vr.vscr.u[3]);
a8bd19ef 580 break;
c0867fd5
PM		 581 case KVM_REG_PPC_VRSAVE:
582 val = get_reg_val(reg->id, vcpu->arch.vrsave);
583 break;
a8bd19ef 584#endif /* CONFIG_ALTIVEC */
efff1912
PM		 585#ifdef CONFIG_VSX
586 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
587 if (cpu_has_feature(CPU_FTR_VSX)) {
588 long int i = reg->id - KVM_REG_PPC_VSR0;
589 val.vsxval[0] = vcpu->arch.fp.fpr[i][0];
590 val.vsxval[1] = vcpu->arch.fp.fpr[i][1];
591 } else {
592 r = -ENXIO;
593 }
594 break;
595#endif /* CONFIG_VSX */
8c32a2ea
BB		 596 case KVM_REG_PPC_DEBUG_INST: {
597 u32 opcode = INS_TW;
598 r = copy_to_user((u32 __user *)(long)reg->addr,
599 &opcode, sizeof(u32));
600 break;
601 }
8b78645c
PM		 602#ifdef CONFIG_KVM_XICS
603 case KVM_REG_PPC_ICP_STATE:
604 if (!vcpu->arch.icp) {
605 r = -ENXIO;
606 break;
607 }
608 val = get_reg_val(reg->id, kvmppc_xics_get_icp(vcpu));
609 break;
610#endif /* CONFIG_KVM_XICS */
616dff86
AG		 611 case KVM_REG_PPC_FSCR:
612 val = get_reg_val(reg->id, vcpu->arch.fscr);
613 break;
e14e7a1e
AG		 614 case KVM_REG_PPC_TAR:
615 val = get_reg_val(reg->id, vcpu->arch.tar);
616 break;
2e23f544
AG		 617 case KVM_REG_PPC_EBBHR:
618 val = get_reg_val(reg->id, vcpu->arch.ebbhr);
619 break;
620 case KVM_REG_PPC_EBBRR:
621 val = get_reg_val(reg->id, vcpu->arch.ebbrr);
622 break;
623 case KVM_REG_PPC_BESCR:
624 val = get_reg_val(reg->id, vcpu->arch.bescr);
625 break;
8f42ab27
AK		 626 case KVM_REG_PPC_VTB:
627 val = get_reg_val(reg->id, vcpu->arch.vtb);
628 break;
06da28e7
AK		 629 case KVM_REG_PPC_IC:
630 val = get_reg_val(reg->id, vcpu->arch.ic);
631 break;
a136a8bd
PM		 632 default:
633 r = -EINVAL;
634 break;
635 }
636 }
637 if (r)
638 return r;
639
640 if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size))
641 r = -EFAULT;
642
643 return r;
644}
645
646int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
647{
648 int r;
649 union kvmppc_one_reg val;
650 int size;
a8bd19ef 651 long int i;
a136a8bd
PM		 652
653 size = one_reg_size(reg->id);
654 if (size > sizeof(val))
655 return -EINVAL;
656
657 if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size))
658 return -EFAULT;
659
cbbc58d4 660 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, reg->id, &val);
a136a8bd
PM		 661 if (r == -EINVAL) {
662 r = 0;
663 switch (reg->id) {
664 case KVM_REG_PPC_DAR:
5deb8e7a 665 kvmppc_set_dar(vcpu, set_reg_val(reg->id, val));
a136a8bd
PM		 666 break;
667 case KVM_REG_PPC_DSISR:
5deb8e7a 668 kvmppc_set_dsisr(vcpu, set_reg_val(reg->id, val));
a136a8bd 669 break;
a8bd19ef
PM		 670 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
671 i = reg->id - KVM_REG_PPC_FPR0;
efff1912 672 VCPU_FPR(vcpu, i) = set_reg_val(reg->id, val);
a8bd19ef
PM		 673 break;
674 case KVM_REG_PPC_FPSCR:
efff1912 675 vcpu->arch.fp.fpscr = set_reg_val(reg->id, val);
a8bd19ef
PM		 676 break;
677#ifdef CONFIG_ALTIVEC
678 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
679 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
680 r = -ENXIO;
681 break;
682 }
efff1912 683 vcpu->arch.vr.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
a8bd19ef
PM		 684 break;
685 case KVM_REG_PPC_VSCR:
686 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
687 r = -ENXIO;
688 break;
689 }
efff1912 690 vcpu->arch.vr.vscr.u[3] = set_reg_val(reg->id, val);
a8bd19ef 691 break;
c0867fd5
PM		 692 case KVM_REG_PPC_VRSAVE:
693 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
694 r = -ENXIO;
695 break;
696 }
697 vcpu->arch.vrsave = set_reg_val(reg->id, val);
698 break;
a8bd19ef 699#endif /* CONFIG_ALTIVEC */
efff1912
PM		 700#ifdef CONFIG_VSX
701 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
702 if (cpu_has_feature(CPU_FTR_VSX)) {
703 long int i = reg->id - KVM_REG_PPC_VSR0;
704 vcpu->arch.fp.fpr[i][0] = val.vsxval[0];
705 vcpu->arch.fp.fpr[i][1] = val.vsxval[1];
706 } else {
707 r = -ENXIO;
708 }
709 break;
710#endif /* CONFIG_VSX */
8b78645c
PM		 711#ifdef CONFIG_KVM_XICS
712 case KVM_REG_PPC_ICP_STATE:
713 if (!vcpu->arch.icp) {
714 r = -ENXIO;
715 break;
716 }
717 r = kvmppc_xics_set_icp(vcpu,
718 set_reg_val(reg->id, val));
719 break;
720#endif /* CONFIG_KVM_XICS */
616dff86
AG		 721 case KVM_REG_PPC_FSCR:
722 vcpu->arch.fscr = set_reg_val(reg->id, val);
723 break;
e14e7a1e
AG		 724 case KVM_REG_PPC_TAR:
725 vcpu->arch.tar = set_reg_val(reg->id, val);
726 break;
2e23f544
AG		 727 case KVM_REG_PPC_EBBHR:
728 vcpu->arch.ebbhr = set_reg_val(reg->id, val);
729 break;
730 case KVM_REG_PPC_EBBRR:
731 vcpu->arch.ebbrr = set_reg_val(reg->id, val);
732 break;
733 case KVM_REG_PPC_BESCR:
734 vcpu->arch.bescr = set_reg_val(reg->id, val);
735 break;
8f42ab27
AK		 736 case KVM_REG_PPC_VTB:
737 vcpu->arch.vtb = set_reg_val(reg->id, val);
738 break;
06da28e7
AK		 739 case KVM_REG_PPC_IC:
740 vcpu->arch.ic = set_reg_val(reg->id, val);
741 break;
a136a8bd
PM		 742 default:
743 r = -EINVAL;
744 break;
745 }
746 }
747
748 return r;
749}
750
3a167bea
AK		 751void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
752{
cbbc58d4 753 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
3a167bea
AK		 754}
755
756void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
757{
cbbc58d4 758 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
3a167bea
AK		 759}
760
761void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
762{
cbbc58d4 763 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
3a167bea 764}
2ba9f0d8 765EXPORT_SYMBOL_GPL(kvmppc_set_msr);
3a167bea
AK		 766
767int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
768{
cbbc58d4 769 return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu);
3a167bea
AK		 770}
771
2f4cf5e4
AG		 772int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
773 struct kvm_translation *tr)
774{
775 return 0;
776}
777
092d62ee
BB		 778int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
779 struct kvm_guest_debug *dbg)
780{
781 return -EINVAL;
782}
783
dfd4d47e
SW		 784void kvmppc_decrementer_func(unsigned long data)
785{
786 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
787
788 kvmppc_core_queue_dec(vcpu);
789 kvm_vcpu_kick(vcpu);
790}
3a167bea
AK		 791
792struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
793{
cbbc58d4 794 return kvm->arch.kvm_ops->vcpu_create(kvm, id);
3a167bea
AK		 795}
796
797void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
798{
cbbc58d4 799 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
3a167bea
AK		 800}
801
802int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
803{
cbbc58d4 804 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
3a167bea
AK		 805}
806
807int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
808{
cbbc58d4 809 return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
3a167bea
AK		 810}
811
5587027c 812void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
3a167bea
AK		 813 struct kvm_memory_slot *dont)
814{
cbbc58d4 815 kvm->arch.kvm_ops->free_memslot(free, dont);
3a167bea
AK		 816}
817
5587027c 818int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
3a167bea
AK		 819 unsigned long npages)
820{
cbbc58d4 821 return kvm->arch.kvm_ops->create_memslot(slot, npages);
3a167bea
AK		 822}
823
824void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
825{
cbbc58d4 826 kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
3a167bea
AK		 827}
828
829int kvmppc_core_prepare_memory_region(struct kvm *kvm,
830 struct kvm_memory_slot *memslot,
831 struct kvm_userspace_memory_region *mem)
832{
cbbc58d4 833 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem);
3a167bea
AK		 834}
835
836void kvmppc_core_commit_memory_region(struct kvm *kvm,
837 struct kvm_userspace_memory_region *mem,
838 const struct kvm_memory_slot *old)
839{
cbbc58d4 840 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old);
3a167bea
AK		 841}
842
843int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
844{
cbbc58d4 845 return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
3a167bea 846}
2ba9f0d8 847EXPORT_SYMBOL_GPL(kvm_unmap_hva);
3a167bea
AK		 848
849int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
850{
cbbc58d4 851 return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
3a167bea
AK		 852}
853
854int kvm_age_hva(struct kvm *kvm, unsigned long hva)
855{
cbbc58d4 856 return kvm->arch.kvm_ops->age_hva(kvm, hva);
3a167bea
AK		 857}
858
859int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
860{
cbbc58d4 861 return kvm->arch.kvm_ops->test_age_hva(kvm, hva);
3a167bea
AK		 862}
863
864void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
865{
cbbc58d4 866 kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte);
3a167bea
AK		 867}
868
869void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
870{
cbbc58d4 871 vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
3a167bea
AK		 872}
873
874int kvmppc_core_init_vm(struct kvm *kvm)
875{
876
877#ifdef CONFIG_PPC64
878 INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables);
879 INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
880#endif
881
cbbc58d4 882 return kvm->arch.kvm_ops->init_vm(kvm);
3a167bea
AK		 883}
884
885void kvmppc_core_destroy_vm(struct kvm *kvm)
886{
cbbc58d4 887 kvm->arch.kvm_ops->destroy_vm(kvm);
3a167bea
AK		 888
889#ifdef CONFIG_PPC64
890 kvmppc_rtas_tokens_free(kvm);
891 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
892#endif
893}
894
895int kvmppc_core_check_processor_compat(void)
896{
cbbc58d4
AK		 897 /*
898 * We always return 0 for book3s. We check
899 * for compatability while loading the HV
900 * or PR module
901 */
902 return 0;
903}
904
ae2113a4
PM		 905int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
906{
907 return kvm->arch.kvm_ops->hcall_implemented(hcall);
908}
909
cbbc58d4
AK		 910static int kvmppc_book3s_init(void)
911{
912 int r;
913
914 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
915 if (r)
916 return r;
ab78475c 917#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
cbbc58d4
AK		 918 r = kvmppc_book3s_init_pr();
919#endif
920 return r;
921
922}
923
924static void kvmppc_book3s_exit(void)
925{
ab78475c 926#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
cbbc58d4
AK		 927 kvmppc_book3s_exit_pr();
928#endif
929 kvm_exit();
3a167bea 930}
cbbc58d4
AK		 931
932module_init(kvmppc_book3s_init);
933module_exit(kvmppc_book3s_exit);
398a76c6
AG		 934
935/* On 32bit this is our one and only kernel module */
ab78475c 936#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
398a76c6
AG		 937MODULE_ALIAS_MISCDEV(KVM_MINOR);
938MODULE_ALIAS("devname:kvm");
939#endif
Linux 6.x block layer and io_uring tree(s)