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bbf45ba5 HB |
1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License, version 2, as | |
4 | * published by the Free Software Foundation. | |
5 | * | |
6 | * This program is distributed in the hope that it will be useful, | |
7 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
8 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
9 | * GNU General Public License for more details. | |
10 | * | |
11 | * You should have received a copy of the GNU General Public License | |
12 | * along with this program; if not, write to the Free Software | |
13 | * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
14 | * | |
15 | * Copyright IBM Corp. 2007 | |
16 | * | |
17 | * Authors: Hollis Blanchard <hollisb@us.ibm.com> | |
18 | * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> | |
19 | */ | |
20 | ||
21 | #include <linux/errno.h> | |
22 | #include <linux/err.h> | |
23 | #include <linux/kvm_host.h> | |
bbf45ba5 | 24 | #include <linux/vmalloc.h> |
544c6761 | 25 | #include <linux/hrtimer.h> |
bbf45ba5 | 26 | #include <linux/fs.h> |
5a0e3ad6 | 27 | #include <linux/slab.h> |
eb1e4f43 | 28 | #include <linux/file.h> |
bbf45ba5 HB |
29 | #include <asm/cputable.h> |
30 | #include <asm/uaccess.h> | |
31 | #include <asm/kvm_ppc.h> | |
83aae4a8 | 32 | #include <asm/tlbflush.h> |
371fefd6 | 33 | #include <asm/cputhreads.h> |
bd2be683 | 34 | #include <asm/irqflags.h> |
73e75b41 | 35 | #include "timing.h" |
5efdb4be | 36 | #include "irq.h" |
fad7b9b5 | 37 | #include "../mm/mmu_decl.h" |
bbf45ba5 | 38 | |
46f43c6e MT |
39 | #define CREATE_TRACE_POINTS |
40 | #include "trace.h" | |
41 | ||
bbf45ba5 HB |
42 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) |
43 | { | |
9202e076 | 44 | return !!(v->arch.pending_exceptions) || |
dfd4d47e | 45 | v->requests; |
bbf45ba5 HB |
46 | } |
47 | ||
b6d33834 CD |
48 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) |
49 | { | |
50 | return 1; | |
51 | } | |
52 | ||
03d25c5b AG |
53 | #ifndef CONFIG_KVM_BOOK3S_64_HV |
54 | /* | |
55 | * Common checks before entering the guest world. Call with interrupts | |
56 | * disabled. | |
57 | * | |
7ee78855 AG |
58 | * returns: |
59 | * | |
60 | * == 1 if we're ready to go into guest state | |
61 | * <= 0 if we need to go back to the host with return value | |
03d25c5b AG |
62 | */ |
63 | int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu) | |
64 | { | |
7ee78855 | 65 | int r = 1; |
03d25c5b AG |
66 | |
67 | WARN_ON_ONCE(!irqs_disabled()); | |
68 | while (true) { | |
69 | if (need_resched()) { | |
70 | local_irq_enable(); | |
71 | cond_resched(); | |
72 | local_irq_disable(); | |
73 | continue; | |
74 | } | |
75 | ||
76 | if (signal_pending(current)) { | |
7ee78855 AG |
77 | kvmppc_account_exit(vcpu, SIGNAL_EXITS); |
78 | vcpu->run->exit_reason = KVM_EXIT_INTR; | |
79 | r = -EINTR; | |
03d25c5b AG |
80 | break; |
81 | } | |
82 | ||
5bd1cf11 SW |
83 | vcpu->mode = IN_GUEST_MODE; |
84 | ||
85 | /* | |
86 | * Reading vcpu->requests must happen after setting vcpu->mode, | |
87 | * so we don't miss a request because the requester sees | |
88 | * OUTSIDE_GUEST_MODE and assumes we'll be checking requests | |
89 | * before next entering the guest (and thus doesn't IPI). | |
90 | */ | |
03d25c5b | 91 | smp_mb(); |
5bd1cf11 | 92 | |
03d25c5b AG |
93 | if (vcpu->requests) { |
94 | /* Make sure we process requests preemptable */ | |
95 | local_irq_enable(); | |
96 | trace_kvm_check_requests(vcpu); | |
7c973a2e | 97 | r = kvmppc_core_check_requests(vcpu); |
03d25c5b | 98 | local_irq_disable(); |
7c973a2e AG |
99 | if (r > 0) |
100 | continue; | |
101 | break; | |
03d25c5b AG |
102 | } |
103 | ||
104 | if (kvmppc_core_prepare_to_enter(vcpu)) { | |
105 | /* interrupts got enabled in between, so we | |
106 | are back at square 1 */ | |
107 | continue; | |
108 | } | |
109 | ||
bd2be683 AG |
110 | #ifdef CONFIG_PPC64 |
111 | /* lazy EE magic */ | |
112 | hard_irq_disable(); | |
113 | if (lazy_irq_pending()) { | |
114 | /* Got an interrupt in between, try again */ | |
115 | local_irq_enable(); | |
116 | local_irq_disable(); | |
3766a4c6 | 117 | kvm_guest_exit(); |
bd2be683 AG |
118 | continue; |
119 | } | |
120 | ||
121 | trace_hardirqs_on(); | |
122 | #endif | |
123 | ||
3766a4c6 | 124 | kvm_guest_enter(); |
03d25c5b AG |
125 | break; |
126 | } | |
127 | ||
128 | return r; | |
129 | } | |
130 | #endif /* CONFIG_KVM_BOOK3S_64_HV */ | |
131 | ||
2a342ed5 AG |
132 | int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) |
133 | { | |
134 | int nr = kvmppc_get_gpr(vcpu, 11); | |
135 | int r; | |
136 | unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); | |
137 | unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); | |
138 | unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); | |
139 | unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); | |
140 | unsigned long r2 = 0; | |
141 | ||
142 | if (!(vcpu->arch.shared->msr & MSR_SF)) { | |
143 | /* 32 bit mode */ | |
144 | param1 &= 0xffffffff; | |
145 | param2 &= 0xffffffff; | |
146 | param3 &= 0xffffffff; | |
147 | param4 &= 0xffffffff; | |
148 | } | |
149 | ||
150 | switch (nr) { | |
fdcf8bd7 | 151 | case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE): |
5fc87407 AG |
152 | { |
153 | vcpu->arch.magic_page_pa = param1; | |
154 | vcpu->arch.magic_page_ea = param2; | |
155 | ||
b5904972 | 156 | r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7; |
7508e16c | 157 | |
fdcf8bd7 | 158 | r = EV_SUCCESS; |
5fc87407 AG |
159 | break; |
160 | } | |
fdcf8bd7 SY |
161 | case KVM_HCALL_TOKEN(KVM_HC_FEATURES): |
162 | r = EV_SUCCESS; | |
bf7ca4bd | 163 | #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2) |
a4cd8b23 | 164 | /* XXX Missing magic page on 44x */ |
5fc87407 AG |
165 | r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); |
166 | #endif | |
2a342ed5 AG |
167 | |
168 | /* Second return value is in r4 */ | |
2a342ed5 | 169 | break; |
9202e076 LYB |
170 | case EV_HCALL_TOKEN(EV_IDLE): |
171 | r = EV_SUCCESS; | |
172 | kvm_vcpu_block(vcpu); | |
173 | clear_bit(KVM_REQ_UNHALT, &vcpu->requests); | |
174 | break; | |
2a342ed5 | 175 | default: |
fdcf8bd7 | 176 | r = EV_UNIMPLEMENTED; |
2a342ed5 AG |
177 | break; |
178 | } | |
179 | ||
7508e16c AG |
180 | kvmppc_set_gpr(vcpu, 4, r2); |
181 | ||
2a342ed5 AG |
182 | return r; |
183 | } | |
bbf45ba5 | 184 | |
af8f38b3 AG |
185 | int kvmppc_sanity_check(struct kvm_vcpu *vcpu) |
186 | { | |
187 | int r = false; | |
188 | ||
189 | /* We have to know what CPU to virtualize */ | |
190 | if (!vcpu->arch.pvr) | |
191 | goto out; | |
192 | ||
193 | /* PAPR only works with book3s_64 */ | |
194 | if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled) | |
195 | goto out; | |
196 | ||
197 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
198 | /* HV KVM can only do PAPR mode for now */ | |
199 | if (!vcpu->arch.papr_enabled) | |
200 | goto out; | |
201 | #endif | |
202 | ||
d30f6e48 SW |
203 | #ifdef CONFIG_KVM_BOOKE_HV |
204 | if (!cpu_has_feature(CPU_FTR_EMB_HV)) | |
205 | goto out; | |
206 | #endif | |
207 | ||
af8f38b3 AG |
208 | r = true; |
209 | ||
210 | out: | |
211 | vcpu->arch.sane = r; | |
212 | return r ? 0 : -EINVAL; | |
213 | } | |
214 | ||
bbf45ba5 HB |
215 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) |
216 | { | |
217 | enum emulation_result er; | |
218 | int r; | |
219 | ||
220 | er = kvmppc_emulate_instruction(run, vcpu); | |
221 | switch (er) { | |
222 | case EMULATE_DONE: | |
223 | /* Future optimization: only reload non-volatiles if they were | |
224 | * actually modified. */ | |
225 | r = RESUME_GUEST_NV; | |
226 | break; | |
227 | case EMULATE_DO_MMIO: | |
228 | run->exit_reason = KVM_EXIT_MMIO; | |
229 | /* We must reload nonvolatiles because "update" load/store | |
230 | * instructions modify register state. */ | |
231 | /* Future optimization: only reload non-volatiles if they were | |
232 | * actually modified. */ | |
233 | r = RESUME_HOST_NV; | |
234 | break; | |
235 | case EMULATE_FAIL: | |
236 | /* XXX Deliver Program interrupt to guest. */ | |
237 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, | |
c7f38f46 | 238 | kvmppc_get_last_inst(vcpu)); |
bbf45ba5 HB |
239 | r = RESUME_HOST; |
240 | break; | |
241 | default: | |
5a33169e AG |
242 | WARN_ON(1); |
243 | r = RESUME_GUEST; | |
bbf45ba5 HB |
244 | } |
245 | ||
246 | return r; | |
247 | } | |
248 | ||
10474ae8 | 249 | int kvm_arch_hardware_enable(void *garbage) |
bbf45ba5 | 250 | { |
10474ae8 | 251 | return 0; |
bbf45ba5 HB |
252 | } |
253 | ||
254 | void kvm_arch_hardware_disable(void *garbage) | |
255 | { | |
256 | } | |
257 | ||
258 | int kvm_arch_hardware_setup(void) | |
259 | { | |
260 | return 0; | |
261 | } | |
262 | ||
263 | void kvm_arch_hardware_unsetup(void) | |
264 | { | |
265 | } | |
266 | ||
267 | void kvm_arch_check_processor_compat(void *rtn) | |
268 | { | |
9dd921cf | 269 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
bbf45ba5 HB |
270 | } |
271 | ||
e08b9637 | 272 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
bbf45ba5 | 273 | { |
e08b9637 CO |
274 | if (type) |
275 | return -EINVAL; | |
276 | ||
f9e0554d | 277 | return kvmppc_core_init_vm(kvm); |
bbf45ba5 HB |
278 | } |
279 | ||
d89f5eff | 280 | void kvm_arch_destroy_vm(struct kvm *kvm) |
bbf45ba5 HB |
281 | { |
282 | unsigned int i; | |
988a2cae | 283 | struct kvm_vcpu *vcpu; |
bbf45ba5 | 284 | |
988a2cae GN |
285 | kvm_for_each_vcpu(i, vcpu, kvm) |
286 | kvm_arch_vcpu_free(vcpu); | |
287 | ||
288 | mutex_lock(&kvm->lock); | |
289 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) | |
290 | kvm->vcpus[i] = NULL; | |
291 | ||
292 | atomic_set(&kvm->online_vcpus, 0); | |
f9e0554d PM |
293 | |
294 | kvmppc_core_destroy_vm(kvm); | |
295 | ||
988a2cae | 296 | mutex_unlock(&kvm->lock); |
bbf45ba5 HB |
297 | } |
298 | ||
ad8ba2cd SY |
299 | void kvm_arch_sync_events(struct kvm *kvm) |
300 | { | |
301 | } | |
302 | ||
bbf45ba5 HB |
303 | int kvm_dev_ioctl_check_extension(long ext) |
304 | { | |
305 | int r; | |
306 | ||
307 | switch (ext) { | |
5ce941ee SW |
308 | #ifdef CONFIG_BOOKE |
309 | case KVM_CAP_PPC_BOOKE_SREGS: | |
f61c94bb | 310 | case KVM_CAP_PPC_BOOKE_WATCHDOG: |
1c810636 | 311 | case KVM_CAP_PPC_EPR: |
5ce941ee | 312 | #else |
e15a1137 | 313 | case KVM_CAP_PPC_SEGSTATE: |
1022fc3d | 314 | case KVM_CAP_PPC_HIOR: |
930b412a | 315 | case KVM_CAP_PPC_PAPR: |
5ce941ee | 316 | #endif |
18978768 | 317 | case KVM_CAP_PPC_UNSET_IRQ: |
7b4203e8 | 318 | case KVM_CAP_PPC_IRQ_LEVEL: |
71fbfd5f | 319 | case KVM_CAP_ENABLE_CAP: |
e24ed81f | 320 | case KVM_CAP_ONE_REG: |
0e673fb6 | 321 | case KVM_CAP_IOEVENTFD: |
5df554ad | 322 | case KVM_CAP_DEVICE_CTRL: |
de56a948 PM |
323 | r = 1; |
324 | break; | |
325 | #ifndef CONFIG_KVM_BOOK3S_64_HV | |
326 | case KVM_CAP_PPC_PAIRED_SINGLES: | |
ad0a048b | 327 | case KVM_CAP_PPC_OSI: |
15711e9c | 328 | case KVM_CAP_PPC_GET_PVINFO: |
bf7ca4bd | 329 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc | 330 | case KVM_CAP_SW_TLB: |
eb1e4f43 SW |
331 | #endif |
332 | #ifdef CONFIG_KVM_MPIC | |
333 | case KVM_CAP_IRQ_MPIC: | |
dc83b8bc | 334 | #endif |
e15a1137 AG |
335 | r = 1; |
336 | break; | |
588968b6 LV |
337 | case KVM_CAP_COALESCED_MMIO: |
338 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
339 | break; | |
54738c09 | 340 | #endif |
f31e65e1 | 341 | #ifdef CONFIG_PPC_BOOK3S_64 |
54738c09 | 342 | case KVM_CAP_SPAPR_TCE: |
32fad281 | 343 | case KVM_CAP_PPC_ALLOC_HTAB: |
8e591cb7 | 344 | case KVM_CAP_PPC_RTAS: |
5975a2e0 PM |
345 | #ifdef CONFIG_KVM_XICS |
346 | case KVM_CAP_IRQ_XICS: | |
347 | #endif | |
54738c09 DG |
348 | r = 1; |
349 | break; | |
f31e65e1 BH |
350 | #endif /* CONFIG_PPC_BOOK3S_64 */ |
351 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
371fefd6 PM |
352 | case KVM_CAP_PPC_SMT: |
353 | r = threads_per_core; | |
354 | break; | |
aa04b4cc PM |
355 | case KVM_CAP_PPC_RMA: |
356 | r = 1; | |
9e368f29 PM |
357 | /* PPC970 requires an RMA */ |
358 | if (cpu_has_feature(CPU_FTR_ARCH_201)) | |
359 | r = 2; | |
aa04b4cc | 360 | break; |
f4800b1f | 361 | #endif |
342d3db7 | 362 | case KVM_CAP_SYNC_MMU: |
f4800b1f | 363 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
342d3db7 | 364 | r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0; |
f4800b1f AG |
365 | #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
366 | r = 1; | |
367 | #else | |
368 | r = 0; | |
a2932923 PM |
369 | break; |
370 | #endif | |
371 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
372 | case KVM_CAP_PPC_HTAB_FD: | |
373 | r = 1; | |
374 | break; | |
de56a948 | 375 | #endif |
f4800b1f | 376 | break; |
b5434032 ME |
377 | case KVM_CAP_NR_VCPUS: |
378 | /* | |
379 | * Recommending a number of CPUs is somewhat arbitrary; we | |
380 | * return the number of present CPUs for -HV (since a host | |
381 | * will have secondary threads "offline"), and for other KVM | |
382 | * implementations just count online CPUs. | |
383 | */ | |
384 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
385 | r = num_present_cpus(); | |
386 | #else | |
387 | r = num_online_cpus(); | |
388 | #endif | |
389 | break; | |
390 | case KVM_CAP_MAX_VCPUS: | |
391 | r = KVM_MAX_VCPUS; | |
392 | break; | |
5b74716e BH |
393 | #ifdef CONFIG_PPC_BOOK3S_64 |
394 | case KVM_CAP_PPC_GET_SMMU_INFO: | |
395 | r = 1; | |
396 | break; | |
397 | #endif | |
bbf45ba5 HB |
398 | default: |
399 | r = 0; | |
400 | break; | |
401 | } | |
402 | return r; | |
403 | ||
404 | } | |
405 | ||
406 | long kvm_arch_dev_ioctl(struct file *filp, | |
407 | unsigned int ioctl, unsigned long arg) | |
408 | { | |
409 | return -EINVAL; | |
410 | } | |
411 | ||
db3fe4eb TY |
412 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
413 | struct kvm_memory_slot *dont) | |
414 | { | |
a66b48c3 | 415 | kvmppc_core_free_memslot(free, dont); |
db3fe4eb TY |
416 | } |
417 | ||
418 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages) | |
419 | { | |
a66b48c3 | 420 | return kvmppc_core_create_memslot(slot, npages); |
db3fe4eb TY |
421 | } |
422 | ||
f7784b8e | 423 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
462fce46 | 424 | struct kvm_memory_slot *memslot, |
7b6195a9 TY |
425 | struct kvm_userspace_memory_region *mem, |
426 | enum kvm_mr_change change) | |
bbf45ba5 | 427 | { |
a66b48c3 | 428 | return kvmppc_core_prepare_memory_region(kvm, memslot, mem); |
bbf45ba5 HB |
429 | } |
430 | ||
f7784b8e | 431 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
462fce46 | 432 | struct kvm_userspace_memory_region *mem, |
8482644a TY |
433 | const struct kvm_memory_slot *old, |
434 | enum kvm_mr_change change) | |
f7784b8e | 435 | { |
dfe49dbd | 436 | kvmppc_core_commit_memory_region(kvm, mem, old); |
f7784b8e MT |
437 | } |
438 | ||
2df72e9b MT |
439 | void kvm_arch_flush_shadow_all(struct kvm *kvm) |
440 | { | |
441 | } | |
f7784b8e | 442 | |
2df72e9b MT |
443 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, |
444 | struct kvm_memory_slot *slot) | |
34d4cb8f | 445 | { |
dfe49dbd | 446 | kvmppc_core_flush_memslot(kvm, slot); |
34d4cb8f MT |
447 | } |
448 | ||
bbf45ba5 HB |
449 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
450 | { | |
73e75b41 HB |
451 | struct kvm_vcpu *vcpu; |
452 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
03cdab53 ME |
453 | if (!IS_ERR(vcpu)) { |
454 | vcpu->arch.wqp = &vcpu->wq; | |
06056bfb | 455 | kvmppc_create_vcpu_debugfs(vcpu, id); |
03cdab53 | 456 | } |
73e75b41 | 457 | return vcpu; |
bbf45ba5 HB |
458 | } |
459 | ||
42897d86 MT |
460 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) |
461 | { | |
462 | return 0; | |
463 | } | |
464 | ||
bbf45ba5 HB |
465 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) |
466 | { | |
a595405d AG |
467 | /* Make sure we're not using the vcpu anymore */ |
468 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
469 | tasklet_kill(&vcpu->arch.tasklet); | |
470 | ||
73e75b41 | 471 | kvmppc_remove_vcpu_debugfs(vcpu); |
eb1e4f43 SW |
472 | |
473 | switch (vcpu->arch.irq_type) { | |
474 | case KVMPPC_IRQ_MPIC: | |
475 | kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu); | |
476 | break; | |
bc5ad3f3 BH |
477 | case KVMPPC_IRQ_XICS: |
478 | kvmppc_xics_free_icp(vcpu); | |
479 | break; | |
eb1e4f43 SW |
480 | } |
481 | ||
db93f574 | 482 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
483 | } |
484 | ||
485 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
486 | { | |
487 | kvm_arch_vcpu_free(vcpu); | |
488 | } | |
489 | ||
490 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
491 | { | |
9dd921cf | 492 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
493 | } |
494 | ||
544c6761 AG |
495 | /* |
496 | * low level hrtimer wake routine. Because this runs in hardirq context | |
497 | * we schedule a tasklet to do the real work. | |
498 | */ | |
499 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
500 | { | |
501 | struct kvm_vcpu *vcpu; | |
502 | ||
503 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
504 | tasklet_schedule(&vcpu->arch.tasklet); | |
505 | ||
506 | return HRTIMER_NORESTART; | |
507 | } | |
508 | ||
bbf45ba5 HB |
509 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
510 | { | |
f61c94bb BB |
511 | int ret; |
512 | ||
544c6761 AG |
513 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
514 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
515 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 516 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 517 | |
09000adb BB |
518 | #ifdef CONFIG_KVM_EXIT_TIMING |
519 | mutex_init(&vcpu->arch.exit_timing_lock); | |
520 | #endif | |
f61c94bb BB |
521 | ret = kvmppc_subarch_vcpu_init(vcpu); |
522 | return ret; | |
bbf45ba5 HB |
523 | } |
524 | ||
525 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
526 | { | |
ecc0981f | 527 | kvmppc_mmu_destroy(vcpu); |
f61c94bb | 528 | kvmppc_subarch_vcpu_uninit(vcpu); |
bbf45ba5 HB |
529 | } |
530 | ||
531 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
532 | { | |
eab17672 SW |
533 | #ifdef CONFIG_BOOKE |
534 | /* | |
535 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
536 | * be used by the guest. | |
537 | * | |
538 | * On non-booke this is associated with Altivec and | |
539 | * is handled by code in book3s.c. | |
540 | */ | |
541 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
542 | #endif | |
9dd921cf | 543 | kvmppc_core_vcpu_load(vcpu, cpu); |
bbf45ba5 HB |
544 | } |
545 | ||
546 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
547 | { | |
9dd921cf | 548 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
549 | #ifdef CONFIG_BOOKE |
550 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
551 | #endif | |
bbf45ba5 HB |
552 | } |
553 | ||
bbf45ba5 HB |
554 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, |
555 | struct kvm_run *run) | |
556 | { | |
8e5b26b5 | 557 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
558 | } |
559 | ||
560 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
561 | struct kvm_run *run) | |
562 | { | |
69b61833 | 563 | u64 uninitialized_var(gpr); |
bbf45ba5 | 564 | |
8e5b26b5 | 565 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
566 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
567 | return; | |
568 | } | |
569 | ||
570 | if (vcpu->arch.mmio_is_bigendian) { | |
571 | switch (run->mmio.len) { | |
b104d066 | 572 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
573 | case 4: gpr = *(u32 *)run->mmio.data; break; |
574 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
575 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
576 | } |
577 | } else { | |
578 | /* Convert BE data from userland back to LE. */ | |
579 | switch (run->mmio.len) { | |
8e5b26b5 AG |
580 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
581 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
582 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
583 | } |
584 | } | |
8e5b26b5 | 585 | |
3587d534 AG |
586 | if (vcpu->arch.mmio_sign_extend) { |
587 | switch (run->mmio.len) { | |
588 | #ifdef CONFIG_PPC64 | |
589 | case 4: | |
590 | gpr = (s64)(s32)gpr; | |
591 | break; | |
592 | #endif | |
593 | case 2: | |
594 | gpr = (s64)(s16)gpr; | |
595 | break; | |
596 | case 1: | |
597 | gpr = (s64)(s8)gpr; | |
598 | break; | |
599 | } | |
600 | } | |
601 | ||
8e5b26b5 | 602 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 | 603 | |
b3c5d3c2 AG |
604 | switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) { |
605 | case KVM_MMIO_REG_GPR: | |
b104d066 AG |
606 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
607 | break; | |
b3c5d3c2 AG |
608 | case KVM_MMIO_REG_FPR: |
609 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 610 | break; |
287d5611 | 611 | #ifdef CONFIG_PPC_BOOK3S |
b3c5d3c2 AG |
612 | case KVM_MMIO_REG_QPR: |
613 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 614 | break; |
b3c5d3c2 AG |
615 | case KVM_MMIO_REG_FQPR: |
616 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
617 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 618 | break; |
287d5611 | 619 | #endif |
b104d066 AG |
620 | default: |
621 | BUG(); | |
622 | } | |
bbf45ba5 HB |
623 | } |
624 | ||
625 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
626 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
627 | { | |
ed840ee9 SW |
628 | int idx, ret; |
629 | ||
bbf45ba5 HB |
630 | if (bytes > sizeof(run->mmio.data)) { |
631 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
632 | run->mmio.len); | |
633 | } | |
634 | ||
635 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
636 | run->mmio.len = bytes; | |
637 | run->mmio.is_write = 0; | |
638 | ||
639 | vcpu->arch.io_gpr = rt; | |
640 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
641 | vcpu->mmio_needed = 1; | |
642 | vcpu->mmio_is_write = 0; | |
3587d534 | 643 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 | 644 | |
ed840ee9 SW |
645 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
646 | ||
647 | ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, | |
648 | bytes, &run->mmio.data); | |
649 | ||
650 | srcu_read_unlock(&vcpu->kvm->srcu, idx); | |
651 | ||
652 | if (!ret) { | |
0e673fb6 AG |
653 | kvmppc_complete_mmio_load(vcpu, run); |
654 | vcpu->mmio_needed = 0; | |
655 | return EMULATE_DONE; | |
656 | } | |
657 | ||
bbf45ba5 HB |
658 | return EMULATE_DO_MMIO; |
659 | } | |
660 | ||
3587d534 AG |
661 | /* Same as above, but sign extends */ |
662 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
663 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
664 | { | |
665 | int r; | |
666 | ||
3587d534 | 667 | vcpu->arch.mmio_sign_extend = 1; |
0e673fb6 | 668 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); |
3587d534 AG |
669 | |
670 | return r; | |
671 | } | |
672 | ||
bbf45ba5 | 673 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 674 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
675 | { |
676 | void *data = run->mmio.data; | |
ed840ee9 | 677 | int idx, ret; |
bbf45ba5 HB |
678 | |
679 | if (bytes > sizeof(run->mmio.data)) { | |
680 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
681 | run->mmio.len); | |
682 | } | |
683 | ||
684 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
685 | run->mmio.len = bytes; | |
686 | run->mmio.is_write = 1; | |
687 | vcpu->mmio_needed = 1; | |
688 | vcpu->mmio_is_write = 1; | |
689 | ||
690 | /* Store the value at the lowest bytes in 'data'. */ | |
691 | if (is_bigendian) { | |
692 | switch (bytes) { | |
b104d066 | 693 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
694 | case 4: *(u32 *)data = val; break; |
695 | case 2: *(u16 *)data = val; break; | |
696 | case 1: *(u8 *)data = val; break; | |
697 | } | |
698 | } else { | |
699 | /* Store LE value into 'data'. */ | |
700 | switch (bytes) { | |
701 | case 4: st_le32(data, val); break; | |
702 | case 2: st_le16(data, val); break; | |
703 | case 1: *(u8 *)data = val; break; | |
704 | } | |
705 | } | |
706 | ||
ed840ee9 SW |
707 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
708 | ||
709 | ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, | |
710 | bytes, &run->mmio.data); | |
711 | ||
712 | srcu_read_unlock(&vcpu->kvm->srcu, idx); | |
713 | ||
714 | if (!ret) { | |
0e673fb6 AG |
715 | vcpu->mmio_needed = 0; |
716 | return EMULATE_DONE; | |
717 | } | |
718 | ||
bbf45ba5 HB |
719 | return EMULATE_DO_MMIO; |
720 | } | |
721 | ||
722 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
723 | { | |
724 | int r; | |
725 | sigset_t sigsaved; | |
726 | ||
727 | if (vcpu->sigset_active) | |
728 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
729 | ||
730 | if (vcpu->mmio_needed) { | |
731 | if (!vcpu->mmio_is_write) | |
732 | kvmppc_complete_mmio_load(vcpu, run); | |
733 | vcpu->mmio_needed = 0; | |
734 | } else if (vcpu->arch.dcr_needed) { | |
735 | if (!vcpu->arch.dcr_is_write) | |
736 | kvmppc_complete_dcr_load(vcpu, run); | |
737 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
738 | } else if (vcpu->arch.osi_needed) { |
739 | u64 *gprs = run->osi.gprs; | |
740 | int i; | |
741 | ||
742 | for (i = 0; i < 32; i++) | |
743 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
744 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
745 | } else if (vcpu->arch.hcall_needed) { |
746 | int i; | |
747 | ||
748 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
749 | for (i = 0; i < 9; ++i) | |
750 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
751 | vcpu->arch.hcall_needed = 0; | |
1c810636 AG |
752 | #ifdef CONFIG_BOOKE |
753 | } else if (vcpu->arch.epr_needed) { | |
754 | kvmppc_set_epr(vcpu, run->epr.epr); | |
755 | vcpu->arch.epr_needed = 0; | |
756 | #endif | |
bbf45ba5 HB |
757 | } |
758 | ||
df6909e5 | 759 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
760 | |
761 | if (vcpu->sigset_active) | |
762 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
763 | ||
764 | return r; | |
765 | } | |
766 | ||
767 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
768 | { | |
19ccb76a | 769 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
4fe27d2a | 770 | kvmppc_core_dequeue_external(vcpu); |
19ccb76a PM |
771 | return 0; |
772 | } | |
773 | ||
774 | kvmppc_core_queue_external(vcpu, irq); | |
b6d33834 | 775 | |
dfd4d47e | 776 | kvm_vcpu_kick(vcpu); |
45c5eb67 | 777 | |
bbf45ba5 HB |
778 | return 0; |
779 | } | |
780 | ||
71fbfd5f AG |
781 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
782 | struct kvm_enable_cap *cap) | |
783 | { | |
784 | int r; | |
785 | ||
786 | if (cap->flags) | |
787 | return -EINVAL; | |
788 | ||
789 | switch (cap->cap) { | |
ad0a048b AG |
790 | case KVM_CAP_PPC_OSI: |
791 | r = 0; | |
792 | vcpu->arch.osi_enabled = true; | |
793 | break; | |
930b412a AG |
794 | case KVM_CAP_PPC_PAPR: |
795 | r = 0; | |
796 | vcpu->arch.papr_enabled = true; | |
797 | break; | |
1c810636 AG |
798 | case KVM_CAP_PPC_EPR: |
799 | r = 0; | |
5df554ad SW |
800 | if (cap->args[0]) |
801 | vcpu->arch.epr_flags |= KVMPPC_EPR_USER; | |
802 | else | |
803 | vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER; | |
1c810636 | 804 | break; |
f61c94bb BB |
805 | #ifdef CONFIG_BOOKE |
806 | case KVM_CAP_PPC_BOOKE_WATCHDOG: | |
807 | r = 0; | |
808 | vcpu->arch.watchdog_enabled = true; | |
809 | break; | |
810 | #endif | |
bf7ca4bd | 811 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
812 | case KVM_CAP_SW_TLB: { |
813 | struct kvm_config_tlb cfg; | |
814 | void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; | |
815 | ||
816 | r = -EFAULT; | |
817 | if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) | |
818 | break; | |
819 | ||
820 | r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); | |
821 | break; | |
eb1e4f43 SW |
822 | } |
823 | #endif | |
824 | #ifdef CONFIG_KVM_MPIC | |
825 | case KVM_CAP_IRQ_MPIC: { | |
826 | struct file *filp; | |
827 | struct kvm_device *dev; | |
828 | ||
829 | r = -EBADF; | |
830 | filp = fget(cap->args[0]); | |
831 | if (!filp) | |
832 | break; | |
833 | ||
834 | r = -EPERM; | |
835 | dev = kvm_device_from_filp(filp); | |
836 | if (dev) | |
837 | r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]); | |
838 | ||
839 | fput(filp); | |
840 | break; | |
dc83b8bc SW |
841 | } |
842 | #endif | |
5975a2e0 PM |
843 | #ifdef CONFIG_KVM_XICS |
844 | case KVM_CAP_IRQ_XICS: { | |
845 | struct file *filp; | |
846 | struct kvm_device *dev; | |
847 | ||
848 | r = -EBADF; | |
849 | filp = fget(cap->args[0]); | |
850 | if (!filp) | |
851 | break; | |
852 | ||
853 | r = -EPERM; | |
854 | dev = kvm_device_from_filp(filp); | |
855 | if (dev) | |
856 | r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]); | |
857 | ||
858 | fput(filp); | |
859 | break; | |
860 | } | |
861 | #endif /* CONFIG_KVM_XICS */ | |
71fbfd5f AG |
862 | default: |
863 | r = -EINVAL; | |
864 | break; | |
865 | } | |
866 | ||
af8f38b3 AG |
867 | if (!r) |
868 | r = kvmppc_sanity_check(vcpu); | |
869 | ||
71fbfd5f AG |
870 | return r; |
871 | } | |
872 | ||
bbf45ba5 HB |
873 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
874 | struct kvm_mp_state *mp_state) | |
875 | { | |
876 | return -EINVAL; | |
877 | } | |
878 | ||
879 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
880 | struct kvm_mp_state *mp_state) | |
881 | { | |
882 | return -EINVAL; | |
883 | } | |
884 | ||
885 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
886 | unsigned int ioctl, unsigned long arg) | |
887 | { | |
888 | struct kvm_vcpu *vcpu = filp->private_data; | |
889 | void __user *argp = (void __user *)arg; | |
890 | long r; | |
891 | ||
93736624 AK |
892 | switch (ioctl) { |
893 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
894 | struct kvm_interrupt irq; |
895 | r = -EFAULT; | |
896 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 897 | goto out; |
bbf45ba5 | 898 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 899 | goto out; |
bbf45ba5 | 900 | } |
19483d14 | 901 | |
71fbfd5f AG |
902 | case KVM_ENABLE_CAP: |
903 | { | |
904 | struct kvm_enable_cap cap; | |
905 | r = -EFAULT; | |
906 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
907 | goto out; | |
908 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
909 | break; | |
910 | } | |
dc83b8bc | 911 | |
e24ed81f AG |
912 | case KVM_SET_ONE_REG: |
913 | case KVM_GET_ONE_REG: | |
914 | { | |
915 | struct kvm_one_reg reg; | |
916 | r = -EFAULT; | |
917 | if (copy_from_user(®, argp, sizeof(reg))) | |
918 | goto out; | |
919 | if (ioctl == KVM_SET_ONE_REG) | |
920 | r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); | |
921 | else | |
922 | r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); | |
923 | break; | |
924 | } | |
925 | ||
bf7ca4bd | 926 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
927 | case KVM_DIRTY_TLB: { |
928 | struct kvm_dirty_tlb dirty; | |
929 | r = -EFAULT; | |
930 | if (copy_from_user(&dirty, argp, sizeof(dirty))) | |
931 | goto out; | |
932 | r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); | |
933 | break; | |
934 | } | |
935 | #endif | |
bbf45ba5 HB |
936 | default: |
937 | r = -EINVAL; | |
938 | } | |
939 | ||
940 | out: | |
941 | return r; | |
942 | } | |
943 | ||
5b1c1493 CO |
944 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
945 | { | |
946 | return VM_FAULT_SIGBUS; | |
947 | } | |
948 | ||
15711e9c AG |
949 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
950 | { | |
784bafac SY |
951 | u32 inst_nop = 0x60000000; |
952 | #ifdef CONFIG_KVM_BOOKE_HV | |
953 | u32 inst_sc1 = 0x44000022; | |
954 | pvinfo->hcall[0] = inst_sc1; | |
955 | pvinfo->hcall[1] = inst_nop; | |
956 | pvinfo->hcall[2] = inst_nop; | |
957 | pvinfo->hcall[3] = inst_nop; | |
958 | #else | |
15711e9c AG |
959 | u32 inst_lis = 0x3c000000; |
960 | u32 inst_ori = 0x60000000; | |
15711e9c AG |
961 | u32 inst_sc = 0x44000002; |
962 | u32 inst_imm_mask = 0xffff; | |
963 | ||
964 | /* | |
965 | * The hypercall to get into KVM from within guest context is as | |
966 | * follows: | |
967 | * | |
968 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
969 | * ori r0, KVM_SC_MAGIC_R0@l | |
970 | * sc | |
971 | * nop | |
972 | */ | |
973 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
974 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
975 | pvinfo->hcall[2] = inst_sc; | |
976 | pvinfo->hcall[3] = inst_nop; | |
784bafac | 977 | #endif |
15711e9c | 978 | |
9202e076 LYB |
979 | pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE; |
980 | ||
15711e9c AG |
981 | return 0; |
982 | } | |
983 | ||
5efdb4be AG |
984 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event, |
985 | bool line_status) | |
986 | { | |
987 | if (!irqchip_in_kernel(kvm)) | |
988 | return -ENXIO; | |
989 | ||
990 | irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, | |
991 | irq_event->irq, irq_event->level, | |
992 | line_status); | |
993 | return 0; | |
994 | } | |
995 | ||
bbf45ba5 HB |
996 | long kvm_arch_vm_ioctl(struct file *filp, |
997 | unsigned int ioctl, unsigned long arg) | |
998 | { | |
5df554ad | 999 | struct kvm *kvm __maybe_unused = filp->private_data; |
15711e9c | 1000 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
1001 | long r; |
1002 | ||
1003 | switch (ioctl) { | |
15711e9c AG |
1004 | case KVM_PPC_GET_PVINFO: { |
1005 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 1006 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
1007 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
1008 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
1009 | r = -EFAULT; | |
1010 | goto out; | |
1011 | } | |
1012 | ||
1013 | break; | |
1014 | } | |
f31e65e1 | 1015 | #ifdef CONFIG_PPC_BOOK3S_64 |
54738c09 DG |
1016 | case KVM_CREATE_SPAPR_TCE: { |
1017 | struct kvm_create_spapr_tce create_tce; | |
54738c09 DG |
1018 | |
1019 | r = -EFAULT; | |
1020 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
1021 | goto out; | |
1022 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
1023 | goto out; | |
1024 | } | |
f31e65e1 | 1025 | #endif /* CONFIG_PPC_BOOK3S_64 */ |
aa04b4cc | 1026 | |
f31e65e1 | 1027 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
aa04b4cc | 1028 | case KVM_ALLOCATE_RMA: { |
aa04b4cc | 1029 | struct kvm_allocate_rma rma; |
8e591cb7 | 1030 | struct kvm *kvm = filp->private_data; |
aa04b4cc PM |
1031 | |
1032 | r = kvm_vm_ioctl_allocate_rma(kvm, &rma); | |
1033 | if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) | |
1034 | r = -EFAULT; | |
1035 | break; | |
1036 | } | |
32fad281 PM |
1037 | |
1038 | case KVM_PPC_ALLOCATE_HTAB: { | |
32fad281 PM |
1039 | u32 htab_order; |
1040 | ||
1041 | r = -EFAULT; | |
1042 | if (get_user(htab_order, (u32 __user *)argp)) | |
1043 | break; | |
1044 | r = kvmppc_alloc_reset_hpt(kvm, &htab_order); | |
1045 | if (r) | |
1046 | break; | |
1047 | r = -EFAULT; | |
1048 | if (put_user(htab_order, (u32 __user *)argp)) | |
1049 | break; | |
1050 | r = 0; | |
1051 | break; | |
1052 | } | |
a2932923 PM |
1053 | |
1054 | case KVM_PPC_GET_HTAB_FD: { | |
a2932923 PM |
1055 | struct kvm_get_htab_fd ghf; |
1056 | ||
1057 | r = -EFAULT; | |
1058 | if (copy_from_user(&ghf, argp, sizeof(ghf))) | |
1059 | break; | |
1060 | r = kvm_vm_ioctl_get_htab_fd(kvm, &ghf); | |
1061 | break; | |
1062 | } | |
54738c09 DG |
1063 | #endif /* CONFIG_KVM_BOOK3S_64_HV */ |
1064 | ||
5b74716e BH |
1065 | #ifdef CONFIG_PPC_BOOK3S_64 |
1066 | case KVM_PPC_GET_SMMU_INFO: { | |
5b74716e BH |
1067 | struct kvm_ppc_smmu_info info; |
1068 | ||
1069 | memset(&info, 0, sizeof(info)); | |
1070 | r = kvm_vm_ioctl_get_smmu_info(kvm, &info); | |
1071 | if (r >= 0 && copy_to_user(argp, &info, sizeof(info))) | |
1072 | r = -EFAULT; | |
1073 | break; | |
1074 | } | |
8e591cb7 ME |
1075 | case KVM_PPC_RTAS_DEFINE_TOKEN: { |
1076 | struct kvm *kvm = filp->private_data; | |
1077 | ||
1078 | r = kvm_vm_ioctl_rtas_define_token(kvm, argp); | |
1079 | break; | |
1080 | } | |
5b74716e | 1081 | #endif /* CONFIG_PPC_BOOK3S_64 */ |
bbf45ba5 | 1082 | default: |
367e1319 | 1083 | r = -ENOTTY; |
bbf45ba5 HB |
1084 | } |
1085 | ||
15711e9c | 1086 | out: |
bbf45ba5 HB |
1087 | return r; |
1088 | } | |
1089 | ||
043cc4d7 SW |
1090 | static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)]; |
1091 | static unsigned long nr_lpids; | |
1092 | ||
1093 | long kvmppc_alloc_lpid(void) | |
1094 | { | |
1095 | long lpid; | |
1096 | ||
1097 | do { | |
1098 | lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS); | |
1099 | if (lpid >= nr_lpids) { | |
1100 | pr_err("%s: No LPIDs free\n", __func__); | |
1101 | return -ENOMEM; | |
1102 | } | |
1103 | } while (test_and_set_bit(lpid, lpid_inuse)); | |
1104 | ||
1105 | return lpid; | |
1106 | } | |
1107 | ||
1108 | void kvmppc_claim_lpid(long lpid) | |
1109 | { | |
1110 | set_bit(lpid, lpid_inuse); | |
1111 | } | |
1112 | ||
1113 | void kvmppc_free_lpid(long lpid) | |
1114 | { | |
1115 | clear_bit(lpid, lpid_inuse); | |
1116 | } | |
1117 | ||
1118 | void kvmppc_init_lpid(unsigned long nr_lpids_param) | |
1119 | { | |
1120 | nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param); | |
1121 | memset(lpid_inuse, 0, sizeof(lpid_inuse)); | |
1122 | } | |
1123 | ||
bbf45ba5 HB |
1124 | int kvm_arch_init(void *opaque) |
1125 | { | |
1126 | return 0; | |
1127 | } | |
1128 | ||
1129 | void kvm_arch_exit(void) | |
1130 | { | |
1131 | } |