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KVM: PPC: Remove PPC970 from KVM_BOOK3S_64_HV text in Kconfig
[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) },
f7819512 55 { "halt_successful_poll", VCPU_STAT(halt_successful_poll), },
2f4cf5e4
AG		 56 { "halt_wakeup", VCPU_STAT(halt_wakeup) },
57 { "pf_storage", VCPU_STAT(pf_storage) },
58 { "sp_storage", VCPU_STAT(sp_storage) },
59 { "pf_instruc", VCPU_STAT(pf_instruc) },
60 { "sp_instruc", VCPU_STAT(sp_instruc) },
61 { "ld", VCPU_STAT(ld) },
62 { "ld_slow", VCPU_STAT(ld_slow) },
63 { "st", VCPU_STAT(st) },
64 { "st_slow", VCPU_STAT(st_slow) },
65 { NULL }
66};
67
c01e3f66
AG		 68void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
69{
70 if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
71 ulong pc = kvmppc_get_pc(vcpu);
72 if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
73 kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
74 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
75 }
76}
77EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
78
699cc876
AK		 79static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
80{
a78b55d1 81 if (!is_kvmppc_hv_enabled(vcpu->kvm))
699cc876
AK		 82 return to_book3s(vcpu)->hior;
83 return 0;
84}
85
86static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
87 unsigned long pending_now, unsigned long old_pending)
88{
a78b55d1 89 if (is_kvmppc_hv_enabled(vcpu->kvm))
699cc876
AK		 90 return;
91 if (pending_now)
5deb8e7a 92 kvmppc_set_int_pending(vcpu, 1);
699cc876 93 else if (old_pending)
5deb8e7a 94 kvmppc_set_int_pending(vcpu, 0);
699cc876
AK		 95}
96
97static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
98{
99 ulong crit_raw;
100 ulong crit_r1;
101 bool crit;
102
a78b55d1 103 if (is_kvmppc_hv_enabled(vcpu->kvm))
699cc876
AK		 104 return false;
105
5deb8e7a 106 crit_raw = kvmppc_get_critical(vcpu);
699cc876
AK		 107 crit_r1 = kvmppc_get_gpr(vcpu, 1);
108
109 /* Truncate crit indicators in 32 bit mode */
5deb8e7a 110 if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
699cc876
AK		 111 crit_raw &= 0xffffffff;
112 crit_r1 &= 0xffffffff;
113 }
114
115 /* Critical section when crit == r1 */
116 crit = (crit_raw == crit_r1);
117 /* ... and we're in supervisor mode */
5deb8e7a 118 crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR);
699cc876
AK		 119
120 return crit;
121}
122
2f4cf5e4
AG		 123void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
124{
c01e3f66 125 kvmppc_unfixup_split_real(vcpu);
5deb8e7a
AG		 126 kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu));
127 kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags);
f05ed4d5 128 kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
2f4cf5e4
AG		 129 vcpu->arch.mmu.reset_msr(vcpu);
130}
131
583617b7 132static int kvmppc_book3s_vec2irqprio(unsigned int vec)
2f4cf5e4
AG		 133{
134 unsigned int prio;
135
2f4cf5e4
AG		 136 switch (vec) {
137 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break;
138 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break;
139 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break;
140 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break;
141 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break;
142 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break;
143 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break;
17bd1580 144 case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break;
2f4cf5e4
AG		 145 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break;
146 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break;
147 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break;
148 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break;
149 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break;
150 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break;
151 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break;
152 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break;
616dff86 153 case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; break;
2f4cf5e4
AG		 154 default: prio = BOOK3S_IRQPRIO_MAX; break;
155 }
156
583617b7
AG		 157 return prio;
158}
159
bc5ad3f3 160void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
7706664d
AG		 161 unsigned int vec)
162{
f05ed4d5
PM		 163 unsigned long old_pending = vcpu->arch.pending_exceptions;
164
7706664d
AG		 165 clear_bit(kvmppc_book3s_vec2irqprio(vec),
166 &vcpu->arch.pending_exceptions);
9ee18b1e 167
f05ed4d5
PM		 168 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
169 old_pending);
7706664d
AG		 170}
171
583617b7
AG		 172void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
173{
174 vcpu->stat.queue_intr++;
175
176 set_bit(kvmppc_book3s_vec2irqprio(vec),
177 &vcpu->arch.pending_exceptions);
2f4cf5e4
AG		 178#ifdef EXIT_DEBUG
179 printk(KERN_INFO "Queueing interrupt %x\n", vec);
180#endif
181}
2ba9f0d8 182EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
2f4cf5e4 183
25a8a02d 184void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
2f4cf5e4 185{
3cf658b6
PM		 186 /* might as well deliver this straight away */
187 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
2f4cf5e4 188}
2ba9f0d8 189EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
2f4cf5e4
AG		 190
191void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
192{
193 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
194}
2ba9f0d8 195EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
2f4cf5e4
AG		 196
197int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
198{
44075d95 199 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
2f4cf5e4 200}
2ba9f0d8 201EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
2f4cf5e4 202
7706664d
AG		 203void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
204{
205 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
206}
2ba9f0d8 207EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
7706664d 208
2f4cf5e4
AG		 209void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
210 struct kvm_interrupt *irq)
211{
17bd1580
AG		 212 unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL;
213
214 if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
215 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL;
216
217 kvmppc_book3s_queue_irqprio(vcpu, vec);
2f4cf5e4
AG		 218}
219
4fe27d2a 220void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
18978768
AG		 221{
222 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
17bd1580 223 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);
18978768
AG		 224}
225
8de12015
AG		 226void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar,
227 ulong flags)
228{
229 kvmppc_set_dar(vcpu, dar);
230 kvmppc_set_dsisr(vcpu, flags);
231 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE);
232}
233
234void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags)
235{
236 u64 msr = kvmppc_get_msr(vcpu);
237 msr &= ~(SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
238 msr |= flags & (SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
239 kvmppc_set_msr_fast(vcpu, msr);
240 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE);
241}
242
2f4cf5e4
AG		 243int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority)
244{
245 int deliver = 1;
246 int vec = 0;
f05ed4d5 247 bool crit = kvmppc_critical_section(vcpu);
2f4cf5e4
AG		 248
249 switch (priority) {
250 case BOOK3S_IRQPRIO_DECREMENTER:
5deb8e7a 251 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
2f4cf5e4
AG		 252 vec = BOOK3S_INTERRUPT_DECREMENTER;
253 break;
254 case BOOK3S_IRQPRIO_EXTERNAL:
17bd1580 255 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
5deb8e7a 256 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
2f4cf5e4
AG		 257 vec = BOOK3S_INTERRUPT_EXTERNAL;
258 break;
259 case BOOK3S_IRQPRIO_SYSTEM_RESET:
260 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
261 break;
262 case BOOK3S_IRQPRIO_MACHINE_CHECK:
263 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
264 break;
265 case BOOK3S_IRQPRIO_DATA_STORAGE:
266 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
267 break;
268 case BOOK3S_IRQPRIO_INST_STORAGE:
269 vec = BOOK3S_INTERRUPT_INST_STORAGE;
270 break;
271 case BOOK3S_IRQPRIO_DATA_SEGMENT:
272 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
273 break;
274 case BOOK3S_IRQPRIO_INST_SEGMENT:
275 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
276 break;
277 case BOOK3S_IRQPRIO_ALIGNMENT:
278 vec = BOOK3S_INTERRUPT_ALIGNMENT;
279 break;
280 case BOOK3S_IRQPRIO_PROGRAM:
281 vec = BOOK3S_INTERRUPT_PROGRAM;
282 break;
283 case BOOK3S_IRQPRIO_VSX:
284 vec = BOOK3S_INTERRUPT_VSX;
285 break;
286 case BOOK3S_IRQPRIO_ALTIVEC:
287 vec = BOOK3S_INTERRUPT_ALTIVEC;
288 break;
289 case BOOK3S_IRQPRIO_FP_UNAVAIL:
290 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
291 break;
292 case BOOK3S_IRQPRIO_SYSCALL:
293 vec = BOOK3S_INTERRUPT_SYSCALL;
294 break;
295 case BOOK3S_IRQPRIO_DEBUG:
296 vec = BOOK3S_INTERRUPT_TRACE;
297 break;
298 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
299 vec = BOOK3S_INTERRUPT_PERFMON;
300 break;
616dff86
AG		 301 case BOOK3S_IRQPRIO_FAC_UNAVAIL:
302 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL;
303 break;
2f4cf5e4
AG		 304 default:
305 deliver = 0;
306 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
307 break;
308 }
309
310#if 0
311 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
312#endif
313
314 if (deliver)
3cf658b6 315 kvmppc_inject_interrupt(vcpu, vec, 0);
2f4cf5e4
AG		 316
317 return deliver;
318}
319
17bd1580
AG		 320/*
321 * This function determines if an irqprio should be cleared once issued.
322 */
323static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
324{
325 switch (priority) {
326 case BOOK3S_IRQPRIO_DECREMENTER:
327 /* DEC interrupts get cleared by mtdec */
328 return false;
329 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
330 /* External interrupts get cleared by userspace */
331 return false;
332 }
333
334 return true;
335}
336
a8e4ef84 337int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
2f4cf5e4
AG		 338{
339 unsigned long *pending = &vcpu->arch.pending_exceptions;
90bba358 340 unsigned long old_pending = vcpu->arch.pending_exceptions;
2f4cf5e4
AG		 341 unsigned int priority;
342
2f4cf5e4
AG		 343#ifdef EXIT_DEBUG
344 if (vcpu->arch.pending_exceptions)
345 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
346#endif
347 priority = __ffs(*pending);
ada7ba17 348 while (priority < BOOK3S_IRQPRIO_MAX) {
7706664d 349 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
17bd1580 350 clear_irqprio(vcpu, priority)) {
2f4cf5e4
AG		 351 clear_bit(priority, &vcpu->arch.pending_exceptions);
352 break;
353 }
354
355 priority = find_next_bit(pending,
356 BITS_PER_BYTE * sizeof(*pending),
357 priority + 1);
358 }
90bba358
AG		 359
360 /* Tell the guest about our interrupt status */
f05ed4d5 361 kvmppc_update_int_pending(vcpu, *pending, old_pending);
a8e4ef84
AG		 362
363 return 0;
2f4cf5e4 364}
2ba9f0d8 365EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
2f4cf5e4 366
89b68c96 367pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
93b159b4 368 bool *writable)
e8508940 369{
89b68c96
AG		 370 ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
371 gfn_t gfn = gpa >> PAGE_SHIFT;
e8508940 372
5deb8e7a 373 if (!(kvmppc_get_msr(vcpu) & MSR_SF))
bbcc9c06
BH		 374 mp_pa = (uint32_t)mp_pa;
375
e8508940 376 /* Magic page override */
89b68c96
AG		 377 gpa &= ~0xFFFULL;
378 if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
e8508940
AG		 379 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
380 pfn_t pfn;
381
382 pfn = (pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
383 get_page(pfn_to_page(pfn));
93b159b4
PM		 384 if (writable)
385 *writable = true;
e8508940
AG		 386 return pfn;
387 }
388
93b159b4 389 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
e8508940 390}
89b68c96 391EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
e8508940 392
7d15c06f
AG		 393int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
394 enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
2f4cf5e4 395{
7d15c06f
AG		 396 bool data = (xlid == XLATE_DATA);
397 bool iswrite = (xlrw == XLATE_WRITE);
5deb8e7a 398 int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
2f4cf5e4
AG		 399 int r;
400
401 if (relocated) {
93b159b4 402 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
2f4cf5e4
AG		 403 } else {
404 pte->eaddr = eaddr;
28e83b4f 405 pte->raddr = eaddr & KVM_PAM;
3eeafd7d 406 pte->vpage = VSID_REAL | eaddr >> 12;
2f4cf5e4
AG		 407 pte->may_read = true;
408 pte->may_write = true;
409 pte->may_execute = true;
410 r = 0;
c01e3f66
AG		 411
412 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
413 !data) {
414 if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
415 ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
416 pte->raddr &= ~SPLIT_HACK_MASK;
417 }
2f4cf5e4
AG		 418 }
419
420 return r;
421}
422
51f04726
MC		 423int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type,
424 u32 *inst)
425{
426 ulong pc = kvmppc_get_pc(vcpu);
427 int r;
428
429 if (type == INST_SC)
430 pc -= 4;
431
432 r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false);
433 if (r == EMULATE_DONE)
434 return r;
435 else
436 return EMULATE_AGAIN;
437}
438EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
439
2f4cf5e4
AG		 440int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
441{
442 return 0;
443}
444
f61c94bb
BB		 445int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
446{
447 return 0;
448}
449
450void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
451{
452}
453
3a167bea
AK		 454int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
455 struct kvm_sregs *sregs)
456{
cbbc58d4 457 return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
3a167bea
AK		 458}
459
460int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
461 struct kvm_sregs *sregs)
462{
cbbc58d4 463 return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
3a167bea
AK		 464}
465
2f4cf5e4
AG		 466int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
467{
468 int i;
469
c7f38f46 470 regs->pc = kvmppc_get_pc(vcpu);
992b5b29 471 regs->cr = kvmppc_get_cr(vcpu);
c7f38f46
AG		 472 regs->ctr = kvmppc_get_ctr(vcpu);
473 regs->lr = kvmppc_get_lr(vcpu);
992b5b29 474 regs->xer = kvmppc_get_xer(vcpu);
5deb8e7a
AG		 475 regs->msr = kvmppc_get_msr(vcpu);
476 regs->srr0 = kvmppc_get_srr0(vcpu);
477 regs->srr1 = kvmppc_get_srr1(vcpu);
2f4cf5e4 478 regs->pid = vcpu->arch.pid;
5deb8e7a
AG		 479 regs->sprg0 = kvmppc_get_sprg0(vcpu);
480 regs->sprg1 = kvmppc_get_sprg1(vcpu);
481 regs->sprg2 = kvmppc_get_sprg2(vcpu);
482 regs->sprg3 = kvmppc_get_sprg3(vcpu);
483 regs->sprg4 = kvmppc_get_sprg4(vcpu);
484 regs->sprg5 = kvmppc_get_sprg5(vcpu);
485 regs->sprg6 = kvmppc_get_sprg6(vcpu);
486 regs->sprg7 = kvmppc_get_sprg7(vcpu);
2f4cf5e4
AG		 487
488 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
8e5b26b5 489 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
2f4cf5e4
AG		 490
491 return 0;
492}
493
494int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
495{
496 int i;
497
c7f38f46 498 kvmppc_set_pc(vcpu, regs->pc);
992b5b29 499 kvmppc_set_cr(vcpu, regs->cr);
c7f38f46
AG		 500 kvmppc_set_ctr(vcpu, regs->ctr);
501 kvmppc_set_lr(vcpu, regs->lr);
992b5b29 502 kvmppc_set_xer(vcpu, regs->xer);
2f4cf5e4 503 kvmppc_set_msr(vcpu, regs->msr);
5deb8e7a
AG		 504 kvmppc_set_srr0(vcpu, regs->srr0);
505 kvmppc_set_srr1(vcpu, regs->srr1);
506 kvmppc_set_sprg0(vcpu, regs->sprg0);
507 kvmppc_set_sprg1(vcpu, regs->sprg1);
508 kvmppc_set_sprg2(vcpu, regs->sprg2);
509 kvmppc_set_sprg3(vcpu, regs->sprg3);
510 kvmppc_set_sprg4(vcpu, regs->sprg4);
511 kvmppc_set_sprg5(vcpu, regs->sprg5);
512 kvmppc_set_sprg6(vcpu, regs->sprg6);
513 kvmppc_set_sprg7(vcpu, regs->sprg7);
2f4cf5e4 514
8e5b26b5
AG		 515 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
516 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
2f4cf5e4
AG		 517
518 return 0;
519}
520
2f4cf5e4
AG		 521int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
522{
523 return -ENOTSUPP;
524}
525
526int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
527{
528 return -ENOTSUPP;
529}
530
8a41ea53
MC		 531int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
532 union kvmppc_one_reg *val)
a136a8bd 533{
8a41ea53 534 int r = 0;
a8bd19ef 535 long int i;
a136a8bd 536
8a41ea53 537 r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
a136a8bd
PM		 538 if (r == -EINVAL) {
539 r = 0;
8a41ea53 540 switch (id) {
a136a8bd 541 case KVM_REG_PPC_DAR:
8a41ea53 542 *val = get_reg_val(id, kvmppc_get_dar(vcpu));
a136a8bd
PM		 543 break;
544 case KVM_REG_PPC_DSISR:
8a41ea53 545 *val = get_reg_val(id, kvmppc_get_dsisr(vcpu));
a136a8bd 546 break;
a8bd19ef 547 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
8a41ea53
MC		 548 i = id - KVM_REG_PPC_FPR0;
549 *val = get_reg_val(id, VCPU_FPR(vcpu, i));
a8bd19ef
PM		 550 break;
551 case KVM_REG_PPC_FPSCR:
8a41ea53 552 *val = get_reg_val(id, vcpu->arch.fp.fpscr);
a8bd19ef 553 break;
efff1912
PM		 554#ifdef CONFIG_VSX
555 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
556 if (cpu_has_feature(CPU_FTR_VSX)) {
8a41ea53
MC		 557 i = id - KVM_REG_PPC_VSR0;
558 val->vsxval[0] = vcpu->arch.fp.fpr[i][0];
559 val->vsxval[1] = vcpu->arch.fp.fpr[i][1];
efff1912
PM		 560 } else {
561 r = -ENXIO;
562 }
563 break;
564#endif /* CONFIG_VSX */
8a41ea53
MC		 565 case KVM_REG_PPC_DEBUG_INST:
566 *val = get_reg_val(id, INS_TW);
8c32a2ea 567 break;
8b78645c
PM		 568#ifdef CONFIG_KVM_XICS
569 case KVM_REG_PPC_ICP_STATE:
570 if (!vcpu->arch.icp) {
571 r = -ENXIO;
572 break;
573 }
8a41ea53 574 *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu));
8b78645c
PM		 575 break;
576#endif /* CONFIG_KVM_XICS */
616dff86 577 case KVM_REG_PPC_FSCR:
8a41ea53 578 *val = get_reg_val(id, vcpu->arch.fscr);
616dff86 579 break;
e14e7a1e 580 case KVM_REG_PPC_TAR:
8a41ea53 581 *val = get_reg_val(id, vcpu->arch.tar);
e14e7a1e 582 break;
2e23f544 583 case KVM_REG_PPC_EBBHR:
8a41ea53 584 *val = get_reg_val(id, vcpu->arch.ebbhr);
2e23f544
AG		 585 break;
586 case KVM_REG_PPC_EBBRR:
8a41ea53 587 *val = get_reg_val(id, vcpu->arch.ebbrr);
2e23f544
AG		 588 break;
589 case KVM_REG_PPC_BESCR:
8a41ea53 590 *val = get_reg_val(id, vcpu->arch.bescr);
2e23f544 591 break;
8f42ab27 592 case KVM_REG_PPC_VTB:
8a41ea53 593 *val = get_reg_val(id, vcpu->arch.vtb);
8f42ab27 594 break;
06da28e7 595 case KVM_REG_PPC_IC:
8a41ea53 596 *val = get_reg_val(id, vcpu->arch.ic);
06da28e7 597 break;
a136a8bd
PM		 598 default:
599 r = -EINVAL;
600 break;
601 }
602 }
a136a8bd
PM		 603
604 return r;
605}
606
8a41ea53
MC		 607int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
608 union kvmppc_one_reg *val)
a136a8bd 609{
8a41ea53 610 int r = 0;
a8bd19ef 611 long int i;
a136a8bd 612
8a41ea53 613 r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
a136a8bd
PM		 614 if (r == -EINVAL) {
615 r = 0;
8a41ea53 616 switch (id) {
a136a8bd 617 case KVM_REG_PPC_DAR:
8a41ea53 618 kvmppc_set_dar(vcpu, set_reg_val(id, *val));
a136a8bd
PM		 619 break;
620 case KVM_REG_PPC_DSISR:
8a41ea53 621 kvmppc_set_dsisr(vcpu, set_reg_val(id, *val));
a136a8bd 622 break;
a8bd19ef 623 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
8a41ea53
MC		 624 i = id - KVM_REG_PPC_FPR0;
625 VCPU_FPR(vcpu, i) = set_reg_val(id, *val);
a8bd19ef
PM		 626 break;
627 case KVM_REG_PPC_FPSCR:
8a41ea53 628 vcpu->arch.fp.fpscr = set_reg_val(id, *val);
a8bd19ef 629 break;
efff1912
PM		 630#ifdef CONFIG_VSX
631 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
632 if (cpu_has_feature(CPU_FTR_VSX)) {
8a41ea53
MC		 633 i = id - KVM_REG_PPC_VSR0;
634 vcpu->arch.fp.fpr[i][0] = val->vsxval[0];
635 vcpu->arch.fp.fpr[i][1] = val->vsxval[1];
efff1912
PM		 636 } else {
637 r = -ENXIO;
638 }
639 break;
640#endif /* CONFIG_VSX */
8b78645c
PM		 641#ifdef CONFIG_KVM_XICS
642 case KVM_REG_PPC_ICP_STATE:
643 if (!vcpu->arch.icp) {
644 r = -ENXIO;
645 break;
646 }
647 r = kvmppc_xics_set_icp(vcpu,
8a41ea53 648 set_reg_val(id, *val));
8b78645c
PM		 649 break;
650#endif /* CONFIG_KVM_XICS */
616dff86 651 case KVM_REG_PPC_FSCR:
8a41ea53 652 vcpu->arch.fscr = set_reg_val(id, *val);
616dff86 653 break;
e14e7a1e 654 case KVM_REG_PPC_TAR:
8a41ea53 655 vcpu->arch.tar = set_reg_val(id, *val);
e14e7a1e 656 break;
2e23f544 657 case KVM_REG_PPC_EBBHR:
8a41ea53 658 vcpu->arch.ebbhr = set_reg_val(id, *val);
2e23f544
AG		 659 break;
660 case KVM_REG_PPC_EBBRR:
8a41ea53 661 vcpu->arch.ebbrr = set_reg_val(id, *val);
2e23f544
AG		 662 break;
663 case KVM_REG_PPC_BESCR:
8a41ea53 664 vcpu->arch.bescr = set_reg_val(id, *val);
2e23f544 665 break;
8f42ab27 666 case KVM_REG_PPC_VTB:
8a41ea53 667 vcpu->arch.vtb = set_reg_val(id, *val);
8f42ab27 668 break;
06da28e7 669 case KVM_REG_PPC_IC:
8a41ea53 670 vcpu->arch.ic = set_reg_val(id, *val);
06da28e7 671 break;
a136a8bd
PM		 672 default:
673 r = -EINVAL;
674 break;
675 }
676 }
677
678 return r;
679}
680
3a167bea
AK		 681void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
682{
cbbc58d4 683 vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
3a167bea
AK		 684}
685
686void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
687{
cbbc58d4 688 vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
3a167bea
AK		 689}
690
691void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
692{
cbbc58d4 693 vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
3a167bea 694}
2ba9f0d8 695EXPORT_SYMBOL_GPL(kvmppc_set_msr);
3a167bea
AK		 696
697int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
698{
cbbc58d4 699 return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu);
3a167bea
AK		 700}
701
2f4cf5e4
AG		 702int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
703 struct kvm_translation *tr)
704{
705 return 0;
706}
707
092d62ee
BB		 708int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
709 struct kvm_guest_debug *dbg)
710{
a59c1d9e
MS		 711 vcpu->guest_debug = dbg->control;
712 return 0;
092d62ee
BB		 713}
714
d02d4d15 715void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
dfd4d47e 716{
dfd4d47e
SW		 717 kvmppc_core_queue_dec(vcpu);
718 kvm_vcpu_kick(vcpu);
719}
3a167bea
AK		 720
721struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
722{
cbbc58d4 723 return kvm->arch.kvm_ops->vcpu_create(kvm, id);
3a167bea
AK		 724}
725
726void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
727{
cbbc58d4 728 vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
3a167bea
AK		 729}
730
731int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
732{
cbbc58d4 733 return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
3a167bea
AK		 734}
735
736int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
737{
cbbc58d4 738 return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
3a167bea
AK		 739}
740
5587027c 741void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
3a167bea
AK		 742 struct kvm_memory_slot *dont)
743{
cbbc58d4 744 kvm->arch.kvm_ops->free_memslot(free, dont);
3a167bea
AK		 745}
746
5587027c 747int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
3a167bea
AK		 748 unsigned long npages)
749{
cbbc58d4 750 return kvm->arch.kvm_ops->create_memslot(slot, npages);
3a167bea
AK		 751}
752
753void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
754{
cbbc58d4 755 kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
3a167bea
AK		 756}
757
758int kvmppc_core_prepare_memory_region(struct kvm *kvm,
759 struct kvm_memory_slot *memslot,
09170a49 760 const struct kvm_userspace_memory_region *mem)
3a167bea 761{
cbbc58d4 762 return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem);
3a167bea
AK		 763}
764
765void kvmppc_core_commit_memory_region(struct kvm *kvm,
09170a49 766 const struct kvm_userspace_memory_region *mem,
f36f3f28
PB		 767 const struct kvm_memory_slot *old,
768 const struct kvm_memory_slot *new)
3a167bea 769{
f36f3f28 770 kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new);
3a167bea
AK		 771}
772
773int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
774{
cbbc58d4 775 return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
3a167bea 776}
2ba9f0d8 777EXPORT_SYMBOL_GPL(kvm_unmap_hva);
3a167bea
AK		 778
779int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
780{
cbbc58d4 781 return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
3a167bea
AK		 782}
783
57128468 784int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end)
3a167bea 785{
57128468 786 return kvm->arch.kvm_ops->age_hva(kvm, start, end);
3a167bea
AK		 787}
788
789int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
790{
cbbc58d4 791 return kvm->arch.kvm_ops->test_age_hva(kvm, hva);
3a167bea
AK		 792}
793
794void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
795{
cbbc58d4 796 kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte);
3a167bea
AK		 797}
798
799void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
800{
cbbc58d4 801 vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
3a167bea
AK		 802}
803
804int kvmppc_core_init_vm(struct kvm *kvm)
805{
806
807#ifdef CONFIG_PPC64
808 INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables);
809 INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
810#endif
811
cbbc58d4 812 return kvm->arch.kvm_ops->init_vm(kvm);
3a167bea
AK		 813}
814
815void kvmppc_core_destroy_vm(struct kvm *kvm)
816{
cbbc58d4 817 kvm->arch.kvm_ops->destroy_vm(kvm);
3a167bea
AK		 818
819#ifdef CONFIG_PPC64
820 kvmppc_rtas_tokens_free(kvm);
821 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
822#endif
823}
824
99342cf8
DG		 825int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
826{
827 unsigned long size = kvmppc_get_gpr(vcpu, 4);
828 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
829 u64 buf;
830 int ret;
831
832 if (!is_power_of_2(size) || (size > sizeof(buf)))
833 return H_TOO_HARD;
834
835 ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
836 if (ret != 0)
837 return H_TOO_HARD;
838
839 switch (size) {
840 case 1:
841 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf);
842 break;
843
844 case 2:
845 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf));
846 break;
847
848 case 4:
849 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf));
850 break;
851
852 case 8:
853 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf));
854 break;
855
856 default:
857 BUG();
858 }
859
860 return H_SUCCESS;
861}
862EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load);
863
864int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
865{
866 unsigned long size = kvmppc_get_gpr(vcpu, 4);
867 unsigned long addr = kvmppc_get_gpr(vcpu, 5);
868 unsigned long val = kvmppc_get_gpr(vcpu, 6);
869 u64 buf;
870 int ret;
871
872 switch (size) {
873 case 1:
874 *(u8 *)&buf = val;
875 break;
876
877 case 2:
878 *(__be16 *)&buf = cpu_to_be16(val);
879 break;
880
881 case 4:
882 *(__be32 *)&buf = cpu_to_be32(val);
883 break;
884
885 case 8:
886 *(__be64 *)&buf = cpu_to_be64(val);
887 break;
888
889 default:
890 return H_TOO_HARD;
891 }
892
893 ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
894 if (ret != 0)
895 return H_TOO_HARD;
896
897 return H_SUCCESS;
898}
899EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store);
900
3a167bea
AK		 901int kvmppc_core_check_processor_compat(void)
902{
cbbc58d4
AK		 903 /*
904 * We always return 0 for book3s. We check
905 * for compatability while loading the HV
906 * or PR module
907 */
908 return 0;
909}
910
ae2113a4
PM		 911int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
912{
913 return kvm->arch.kvm_ops->hcall_implemented(hcall);
914}
915
cbbc58d4
AK		 916static int kvmppc_book3s_init(void)
917{
918 int r;
919
920 r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
921 if (r)
922 return r;
ab78475c 923#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
cbbc58d4
AK		 924 r = kvmppc_book3s_init_pr();
925#endif
926 return r;
927
928}
929
930static void kvmppc_book3s_exit(void)
931{
ab78475c 932#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
cbbc58d4
AK		 933 kvmppc_book3s_exit_pr();
934#endif
935 kvm_exit();
3a167bea 936}
cbbc58d4
AK		 937
938module_init(kvmppc_book3s_init);
939module_exit(kvmppc_book3s_exit);
398a76c6
AG		 940
941/* On 32bit this is our one and only kernel module */
ab78475c 942#ifdef CONFIG_KVM_BOOK3S_32_HANDLER
398a76c6
AG		 943MODULE_ALIAS_MISCDEV(KVM_MINOR);
944MODULE_ALIAS("devname:kvm");
945#endif
Linux 6.x block layer and io_uring tree(s)