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Commit | Line | Data |
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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 | ||
3a167bea AK |
42 | struct kvmppc_ops *kvmppc_ops; |
43 | ||
bbf45ba5 HB |
44 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) |
45 | { | |
9202e076 | 46 | return !!(v->arch.pending_exceptions) || |
dfd4d47e | 47 | v->requests; |
bbf45ba5 HB |
48 | } |
49 | ||
b6d33834 CD |
50 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) |
51 | { | |
52 | return 1; | |
53 | } | |
54 | ||
03d25c5b AG |
55 | #ifndef CONFIG_KVM_BOOK3S_64_HV |
56 | /* | |
57 | * Common checks before entering the guest world. Call with interrupts | |
58 | * disabled. | |
59 | * | |
7ee78855 AG |
60 | * returns: |
61 | * | |
62 | * == 1 if we're ready to go into guest state | |
63 | * <= 0 if we need to go back to the host with return value | |
03d25c5b AG |
64 | */ |
65 | int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu) | |
66 | { | |
7ee78855 | 67 | int r = 1; |
03d25c5b AG |
68 | |
69 | WARN_ON_ONCE(!irqs_disabled()); | |
70 | while (true) { | |
71 | if (need_resched()) { | |
72 | local_irq_enable(); | |
73 | cond_resched(); | |
74 | local_irq_disable(); | |
75 | continue; | |
76 | } | |
77 | ||
78 | if (signal_pending(current)) { | |
7ee78855 AG |
79 | kvmppc_account_exit(vcpu, SIGNAL_EXITS); |
80 | vcpu->run->exit_reason = KVM_EXIT_INTR; | |
81 | r = -EINTR; | |
03d25c5b AG |
82 | break; |
83 | } | |
84 | ||
5bd1cf11 SW |
85 | vcpu->mode = IN_GUEST_MODE; |
86 | ||
87 | /* | |
88 | * Reading vcpu->requests must happen after setting vcpu->mode, | |
89 | * so we don't miss a request because the requester sees | |
90 | * OUTSIDE_GUEST_MODE and assumes we'll be checking requests | |
91 | * before next entering the guest (and thus doesn't IPI). | |
92 | */ | |
03d25c5b | 93 | smp_mb(); |
5bd1cf11 | 94 | |
03d25c5b AG |
95 | if (vcpu->requests) { |
96 | /* Make sure we process requests preemptable */ | |
97 | local_irq_enable(); | |
98 | trace_kvm_check_requests(vcpu); | |
7c973a2e | 99 | r = kvmppc_core_check_requests(vcpu); |
03d25c5b | 100 | local_irq_disable(); |
7c973a2e AG |
101 | if (r > 0) |
102 | continue; | |
103 | break; | |
03d25c5b AG |
104 | } |
105 | ||
106 | if (kvmppc_core_prepare_to_enter(vcpu)) { | |
107 | /* interrupts got enabled in between, so we | |
108 | are back at square 1 */ | |
109 | continue; | |
110 | } | |
111 | ||
bd2be683 AG |
112 | #ifdef CONFIG_PPC64 |
113 | /* lazy EE magic */ | |
114 | hard_irq_disable(); | |
115 | if (lazy_irq_pending()) { | |
116 | /* Got an interrupt in between, try again */ | |
117 | local_irq_enable(); | |
118 | local_irq_disable(); | |
3766a4c6 | 119 | kvm_guest_exit(); |
bd2be683 AG |
120 | continue; |
121 | } | |
bd2be683 AG |
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 | ||
e59dbe09 TY |
423 | void kvm_arch_memslots_updated(struct kvm *kvm) |
424 | { | |
425 | } | |
426 | ||
f7784b8e | 427 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
462fce46 | 428 | struct kvm_memory_slot *memslot, |
7b6195a9 TY |
429 | struct kvm_userspace_memory_region *mem, |
430 | enum kvm_mr_change change) | |
bbf45ba5 | 431 | { |
a66b48c3 | 432 | return kvmppc_core_prepare_memory_region(kvm, memslot, mem); |
bbf45ba5 HB |
433 | } |
434 | ||
f7784b8e | 435 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
462fce46 | 436 | struct kvm_userspace_memory_region *mem, |
8482644a TY |
437 | const struct kvm_memory_slot *old, |
438 | enum kvm_mr_change change) | |
f7784b8e | 439 | { |
dfe49dbd | 440 | kvmppc_core_commit_memory_region(kvm, mem, old); |
f7784b8e MT |
441 | } |
442 | ||
2df72e9b MT |
443 | void kvm_arch_flush_shadow_all(struct kvm *kvm) |
444 | { | |
445 | } | |
f7784b8e | 446 | |
2df72e9b MT |
447 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, |
448 | struct kvm_memory_slot *slot) | |
34d4cb8f | 449 | { |
dfe49dbd | 450 | kvmppc_core_flush_memslot(kvm, slot); |
34d4cb8f MT |
451 | } |
452 | ||
bbf45ba5 HB |
453 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
454 | { | |
73e75b41 HB |
455 | struct kvm_vcpu *vcpu; |
456 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
03cdab53 ME |
457 | if (!IS_ERR(vcpu)) { |
458 | vcpu->arch.wqp = &vcpu->wq; | |
06056bfb | 459 | kvmppc_create_vcpu_debugfs(vcpu, id); |
03cdab53 | 460 | } |
73e75b41 | 461 | return vcpu; |
bbf45ba5 HB |
462 | } |
463 | ||
42897d86 MT |
464 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) |
465 | { | |
466 | return 0; | |
467 | } | |
468 | ||
bbf45ba5 HB |
469 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) |
470 | { | |
a595405d AG |
471 | /* Make sure we're not using the vcpu anymore */ |
472 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
473 | tasklet_kill(&vcpu->arch.tasklet); | |
474 | ||
73e75b41 | 475 | kvmppc_remove_vcpu_debugfs(vcpu); |
eb1e4f43 SW |
476 | |
477 | switch (vcpu->arch.irq_type) { | |
478 | case KVMPPC_IRQ_MPIC: | |
479 | kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu); | |
480 | break; | |
bc5ad3f3 BH |
481 | case KVMPPC_IRQ_XICS: |
482 | kvmppc_xics_free_icp(vcpu); | |
483 | break; | |
eb1e4f43 SW |
484 | } |
485 | ||
db93f574 | 486 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
487 | } |
488 | ||
489 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
490 | { | |
491 | kvm_arch_vcpu_free(vcpu); | |
492 | } | |
493 | ||
494 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
495 | { | |
9dd921cf | 496 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
497 | } |
498 | ||
544c6761 AG |
499 | /* |
500 | * low level hrtimer wake routine. Because this runs in hardirq context | |
501 | * we schedule a tasklet to do the real work. | |
502 | */ | |
503 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
504 | { | |
505 | struct kvm_vcpu *vcpu; | |
506 | ||
507 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
508 | tasklet_schedule(&vcpu->arch.tasklet); | |
509 | ||
510 | return HRTIMER_NORESTART; | |
511 | } | |
512 | ||
bbf45ba5 HB |
513 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
514 | { | |
f61c94bb BB |
515 | int ret; |
516 | ||
544c6761 AG |
517 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
518 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
519 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 520 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 521 | |
09000adb BB |
522 | #ifdef CONFIG_KVM_EXIT_TIMING |
523 | mutex_init(&vcpu->arch.exit_timing_lock); | |
524 | #endif | |
f61c94bb BB |
525 | ret = kvmppc_subarch_vcpu_init(vcpu); |
526 | return ret; | |
bbf45ba5 HB |
527 | } |
528 | ||
529 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
530 | { | |
ecc0981f | 531 | kvmppc_mmu_destroy(vcpu); |
f61c94bb | 532 | kvmppc_subarch_vcpu_uninit(vcpu); |
bbf45ba5 HB |
533 | } |
534 | ||
535 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
536 | { | |
eab17672 SW |
537 | #ifdef CONFIG_BOOKE |
538 | /* | |
539 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
540 | * be used by the guest. | |
541 | * | |
542 | * On non-booke this is associated with Altivec and | |
543 | * is handled by code in book3s.c. | |
544 | */ | |
545 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
546 | #endif | |
9dd921cf | 547 | kvmppc_core_vcpu_load(vcpu, cpu); |
bbf45ba5 HB |
548 | } |
549 | ||
550 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
551 | { | |
9dd921cf | 552 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
553 | #ifdef CONFIG_BOOKE |
554 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
555 | #endif | |
bbf45ba5 HB |
556 | } |
557 | ||
bbf45ba5 HB |
558 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, |
559 | struct kvm_run *run) | |
560 | { | |
8e5b26b5 | 561 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
562 | } |
563 | ||
564 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
565 | struct kvm_run *run) | |
566 | { | |
69b61833 | 567 | u64 uninitialized_var(gpr); |
bbf45ba5 | 568 | |
8e5b26b5 | 569 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
570 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
571 | return; | |
572 | } | |
573 | ||
574 | if (vcpu->arch.mmio_is_bigendian) { | |
575 | switch (run->mmio.len) { | |
b104d066 | 576 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
577 | case 4: gpr = *(u32 *)run->mmio.data; break; |
578 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
579 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
580 | } |
581 | } else { | |
582 | /* Convert BE data from userland back to LE. */ | |
583 | switch (run->mmio.len) { | |
8e5b26b5 AG |
584 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
585 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
586 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
587 | } |
588 | } | |
8e5b26b5 | 589 | |
3587d534 AG |
590 | if (vcpu->arch.mmio_sign_extend) { |
591 | switch (run->mmio.len) { | |
592 | #ifdef CONFIG_PPC64 | |
593 | case 4: | |
594 | gpr = (s64)(s32)gpr; | |
595 | break; | |
596 | #endif | |
597 | case 2: | |
598 | gpr = (s64)(s16)gpr; | |
599 | break; | |
600 | case 1: | |
601 | gpr = (s64)(s8)gpr; | |
602 | break; | |
603 | } | |
604 | } | |
605 | ||
8e5b26b5 | 606 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 | 607 | |
b3c5d3c2 AG |
608 | switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) { |
609 | case KVM_MMIO_REG_GPR: | |
b104d066 AG |
610 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
611 | break; | |
b3c5d3c2 AG |
612 | case KVM_MMIO_REG_FPR: |
613 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 614 | break; |
287d5611 | 615 | #ifdef CONFIG_PPC_BOOK3S |
b3c5d3c2 AG |
616 | case KVM_MMIO_REG_QPR: |
617 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 618 | break; |
b3c5d3c2 AG |
619 | case KVM_MMIO_REG_FQPR: |
620 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
621 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 622 | break; |
287d5611 | 623 | #endif |
b104d066 AG |
624 | default: |
625 | BUG(); | |
626 | } | |
bbf45ba5 HB |
627 | } |
628 | ||
629 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
630 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
631 | { | |
ed840ee9 SW |
632 | int idx, ret; |
633 | ||
bbf45ba5 HB |
634 | if (bytes > sizeof(run->mmio.data)) { |
635 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
636 | run->mmio.len); | |
637 | } | |
638 | ||
639 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
640 | run->mmio.len = bytes; | |
641 | run->mmio.is_write = 0; | |
642 | ||
643 | vcpu->arch.io_gpr = rt; | |
644 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
645 | vcpu->mmio_needed = 1; | |
646 | vcpu->mmio_is_write = 0; | |
3587d534 | 647 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 | 648 | |
ed840ee9 SW |
649 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
650 | ||
651 | ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, | |
652 | bytes, &run->mmio.data); | |
653 | ||
654 | srcu_read_unlock(&vcpu->kvm->srcu, idx); | |
655 | ||
656 | if (!ret) { | |
0e673fb6 AG |
657 | kvmppc_complete_mmio_load(vcpu, run); |
658 | vcpu->mmio_needed = 0; | |
659 | return EMULATE_DONE; | |
660 | } | |
661 | ||
bbf45ba5 HB |
662 | return EMULATE_DO_MMIO; |
663 | } | |
664 | ||
3587d534 AG |
665 | /* Same as above, but sign extends */ |
666 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
667 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
668 | { | |
669 | int r; | |
670 | ||
3587d534 | 671 | vcpu->arch.mmio_sign_extend = 1; |
0e673fb6 | 672 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); |
3587d534 AG |
673 | |
674 | return r; | |
675 | } | |
676 | ||
bbf45ba5 | 677 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 678 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
679 | { |
680 | void *data = run->mmio.data; | |
ed840ee9 | 681 | int idx, ret; |
bbf45ba5 HB |
682 | |
683 | if (bytes > sizeof(run->mmio.data)) { | |
684 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
685 | run->mmio.len); | |
686 | } | |
687 | ||
688 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
689 | run->mmio.len = bytes; | |
690 | run->mmio.is_write = 1; | |
691 | vcpu->mmio_needed = 1; | |
692 | vcpu->mmio_is_write = 1; | |
693 | ||
694 | /* Store the value at the lowest bytes in 'data'. */ | |
695 | if (is_bigendian) { | |
696 | switch (bytes) { | |
b104d066 | 697 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
698 | case 4: *(u32 *)data = val; break; |
699 | case 2: *(u16 *)data = val; break; | |
700 | case 1: *(u8 *)data = val; break; | |
701 | } | |
702 | } else { | |
703 | /* Store LE value into 'data'. */ | |
704 | switch (bytes) { | |
705 | case 4: st_le32(data, val); break; | |
706 | case 2: st_le16(data, val); break; | |
707 | case 1: *(u8 *)data = val; break; | |
708 | } | |
709 | } | |
710 | ||
ed840ee9 SW |
711 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
712 | ||
713 | ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, | |
714 | bytes, &run->mmio.data); | |
715 | ||
716 | srcu_read_unlock(&vcpu->kvm->srcu, idx); | |
717 | ||
718 | if (!ret) { | |
0e673fb6 AG |
719 | vcpu->mmio_needed = 0; |
720 | return EMULATE_DONE; | |
721 | } | |
722 | ||
bbf45ba5 HB |
723 | return EMULATE_DO_MMIO; |
724 | } | |
725 | ||
726 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
727 | { | |
728 | int r; | |
729 | sigset_t sigsaved; | |
730 | ||
731 | if (vcpu->sigset_active) | |
732 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
733 | ||
734 | if (vcpu->mmio_needed) { | |
735 | if (!vcpu->mmio_is_write) | |
736 | kvmppc_complete_mmio_load(vcpu, run); | |
737 | vcpu->mmio_needed = 0; | |
738 | } else if (vcpu->arch.dcr_needed) { | |
739 | if (!vcpu->arch.dcr_is_write) | |
740 | kvmppc_complete_dcr_load(vcpu, run); | |
741 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
742 | } else if (vcpu->arch.osi_needed) { |
743 | u64 *gprs = run->osi.gprs; | |
744 | int i; | |
745 | ||
746 | for (i = 0; i < 32; i++) | |
747 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
748 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
749 | } else if (vcpu->arch.hcall_needed) { |
750 | int i; | |
751 | ||
752 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
753 | for (i = 0; i < 9; ++i) | |
754 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
755 | vcpu->arch.hcall_needed = 0; | |
1c810636 AG |
756 | #ifdef CONFIG_BOOKE |
757 | } else if (vcpu->arch.epr_needed) { | |
758 | kvmppc_set_epr(vcpu, run->epr.epr); | |
759 | vcpu->arch.epr_needed = 0; | |
760 | #endif | |
bbf45ba5 HB |
761 | } |
762 | ||
df6909e5 | 763 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
764 | |
765 | if (vcpu->sigset_active) | |
766 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
767 | ||
768 | return r; | |
769 | } | |
770 | ||
771 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
772 | { | |
19ccb76a | 773 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
4fe27d2a | 774 | kvmppc_core_dequeue_external(vcpu); |
19ccb76a PM |
775 | return 0; |
776 | } | |
777 | ||
778 | kvmppc_core_queue_external(vcpu, irq); | |
b6d33834 | 779 | |
dfd4d47e | 780 | kvm_vcpu_kick(vcpu); |
45c5eb67 | 781 | |
bbf45ba5 HB |
782 | return 0; |
783 | } | |
784 | ||
71fbfd5f AG |
785 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
786 | struct kvm_enable_cap *cap) | |
787 | { | |
788 | int r; | |
789 | ||
790 | if (cap->flags) | |
791 | return -EINVAL; | |
792 | ||
793 | switch (cap->cap) { | |
ad0a048b AG |
794 | case KVM_CAP_PPC_OSI: |
795 | r = 0; | |
796 | vcpu->arch.osi_enabled = true; | |
797 | break; | |
930b412a AG |
798 | case KVM_CAP_PPC_PAPR: |
799 | r = 0; | |
800 | vcpu->arch.papr_enabled = true; | |
801 | break; | |
1c810636 AG |
802 | case KVM_CAP_PPC_EPR: |
803 | r = 0; | |
5df554ad SW |
804 | if (cap->args[0]) |
805 | vcpu->arch.epr_flags |= KVMPPC_EPR_USER; | |
806 | else | |
807 | vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER; | |
1c810636 | 808 | break; |
f61c94bb BB |
809 | #ifdef CONFIG_BOOKE |
810 | case KVM_CAP_PPC_BOOKE_WATCHDOG: | |
811 | r = 0; | |
812 | vcpu->arch.watchdog_enabled = true; | |
813 | break; | |
814 | #endif | |
bf7ca4bd | 815 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
816 | case KVM_CAP_SW_TLB: { |
817 | struct kvm_config_tlb cfg; | |
818 | void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; | |
819 | ||
820 | r = -EFAULT; | |
821 | if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) | |
822 | break; | |
823 | ||
824 | r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); | |
825 | break; | |
eb1e4f43 SW |
826 | } |
827 | #endif | |
828 | #ifdef CONFIG_KVM_MPIC | |
829 | case KVM_CAP_IRQ_MPIC: { | |
70abaded | 830 | struct fd f; |
eb1e4f43 SW |
831 | struct kvm_device *dev; |
832 | ||
833 | r = -EBADF; | |
70abaded AV |
834 | f = fdget(cap->args[0]); |
835 | if (!f.file) | |
eb1e4f43 SW |
836 | break; |
837 | ||
838 | r = -EPERM; | |
70abaded | 839 | dev = kvm_device_from_filp(f.file); |
eb1e4f43 SW |
840 | if (dev) |
841 | r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]); | |
842 | ||
70abaded | 843 | fdput(f); |
eb1e4f43 | 844 | break; |
dc83b8bc SW |
845 | } |
846 | #endif | |
5975a2e0 PM |
847 | #ifdef CONFIG_KVM_XICS |
848 | case KVM_CAP_IRQ_XICS: { | |
70abaded | 849 | struct fd f; |
5975a2e0 PM |
850 | struct kvm_device *dev; |
851 | ||
852 | r = -EBADF; | |
70abaded AV |
853 | f = fdget(cap->args[0]); |
854 | if (!f.file) | |
5975a2e0 PM |
855 | break; |
856 | ||
857 | r = -EPERM; | |
70abaded | 858 | dev = kvm_device_from_filp(f.file); |
5975a2e0 PM |
859 | if (dev) |
860 | r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]); | |
861 | ||
70abaded | 862 | fdput(f); |
5975a2e0 PM |
863 | break; |
864 | } | |
865 | #endif /* CONFIG_KVM_XICS */ | |
71fbfd5f AG |
866 | default: |
867 | r = -EINVAL; | |
868 | break; | |
869 | } | |
870 | ||
af8f38b3 AG |
871 | if (!r) |
872 | r = kvmppc_sanity_check(vcpu); | |
873 | ||
71fbfd5f AG |
874 | return r; |
875 | } | |
876 | ||
bbf45ba5 HB |
877 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
878 | struct kvm_mp_state *mp_state) | |
879 | { | |
880 | return -EINVAL; | |
881 | } | |
882 | ||
883 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
884 | struct kvm_mp_state *mp_state) | |
885 | { | |
886 | return -EINVAL; | |
887 | } | |
888 | ||
889 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
890 | unsigned int ioctl, unsigned long arg) | |
891 | { | |
892 | struct kvm_vcpu *vcpu = filp->private_data; | |
893 | void __user *argp = (void __user *)arg; | |
894 | long r; | |
895 | ||
93736624 AK |
896 | switch (ioctl) { |
897 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
898 | struct kvm_interrupt irq; |
899 | r = -EFAULT; | |
900 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 901 | goto out; |
bbf45ba5 | 902 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 903 | goto out; |
bbf45ba5 | 904 | } |
19483d14 | 905 | |
71fbfd5f AG |
906 | case KVM_ENABLE_CAP: |
907 | { | |
908 | struct kvm_enable_cap cap; | |
909 | r = -EFAULT; | |
910 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
911 | goto out; | |
912 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
913 | break; | |
914 | } | |
dc83b8bc | 915 | |
e24ed81f AG |
916 | case KVM_SET_ONE_REG: |
917 | case KVM_GET_ONE_REG: | |
918 | { | |
919 | struct kvm_one_reg reg; | |
920 | r = -EFAULT; | |
921 | if (copy_from_user(®, argp, sizeof(reg))) | |
922 | goto out; | |
923 | if (ioctl == KVM_SET_ONE_REG) | |
924 | r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); | |
925 | else | |
926 | r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); | |
927 | break; | |
928 | } | |
929 | ||
bf7ca4bd | 930 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
931 | case KVM_DIRTY_TLB: { |
932 | struct kvm_dirty_tlb dirty; | |
933 | r = -EFAULT; | |
934 | if (copy_from_user(&dirty, argp, sizeof(dirty))) | |
935 | goto out; | |
936 | r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); | |
937 | break; | |
938 | } | |
939 | #endif | |
bbf45ba5 HB |
940 | default: |
941 | r = -EINVAL; | |
942 | } | |
943 | ||
944 | out: | |
945 | return r; | |
946 | } | |
947 | ||
5b1c1493 CO |
948 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
949 | { | |
950 | return VM_FAULT_SIGBUS; | |
951 | } | |
952 | ||
15711e9c AG |
953 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
954 | { | |
784bafac SY |
955 | u32 inst_nop = 0x60000000; |
956 | #ifdef CONFIG_KVM_BOOKE_HV | |
957 | u32 inst_sc1 = 0x44000022; | |
958 | pvinfo->hcall[0] = inst_sc1; | |
959 | pvinfo->hcall[1] = inst_nop; | |
960 | pvinfo->hcall[2] = inst_nop; | |
961 | pvinfo->hcall[3] = inst_nop; | |
962 | #else | |
15711e9c AG |
963 | u32 inst_lis = 0x3c000000; |
964 | u32 inst_ori = 0x60000000; | |
15711e9c AG |
965 | u32 inst_sc = 0x44000002; |
966 | u32 inst_imm_mask = 0xffff; | |
967 | ||
968 | /* | |
969 | * The hypercall to get into KVM from within guest context is as | |
970 | * follows: | |
971 | * | |
972 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
973 | * ori r0, KVM_SC_MAGIC_R0@l | |
974 | * sc | |
975 | * nop | |
976 | */ | |
977 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
978 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
979 | pvinfo->hcall[2] = inst_sc; | |
980 | pvinfo->hcall[3] = inst_nop; | |
784bafac | 981 | #endif |
15711e9c | 982 | |
9202e076 LYB |
983 | pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE; |
984 | ||
15711e9c AG |
985 | return 0; |
986 | } | |
987 | ||
5efdb4be AG |
988 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event, |
989 | bool line_status) | |
990 | { | |
991 | if (!irqchip_in_kernel(kvm)) | |
992 | return -ENXIO; | |
993 | ||
994 | irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, | |
995 | irq_event->irq, irq_event->level, | |
996 | line_status); | |
997 | return 0; | |
998 | } | |
999 | ||
bbf45ba5 HB |
1000 | long kvm_arch_vm_ioctl(struct file *filp, |
1001 | unsigned int ioctl, unsigned long arg) | |
1002 | { | |
5df554ad | 1003 | struct kvm *kvm __maybe_unused = filp->private_data; |
15711e9c | 1004 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
1005 | long r; |
1006 | ||
1007 | switch (ioctl) { | |
15711e9c AG |
1008 | case KVM_PPC_GET_PVINFO: { |
1009 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 1010 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
1011 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
1012 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
1013 | r = -EFAULT; | |
1014 | goto out; | |
1015 | } | |
1016 | ||
1017 | break; | |
1018 | } | |
f31e65e1 | 1019 | #ifdef CONFIG_PPC_BOOK3S_64 |
54738c09 DG |
1020 | case KVM_CREATE_SPAPR_TCE: { |
1021 | struct kvm_create_spapr_tce create_tce; | |
54738c09 DG |
1022 | |
1023 | r = -EFAULT; | |
1024 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
1025 | goto out; | |
1026 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
1027 | goto out; | |
1028 | } | |
5b74716e | 1029 | case KVM_PPC_GET_SMMU_INFO: { |
5b74716e BH |
1030 | struct kvm_ppc_smmu_info info; |
1031 | ||
1032 | memset(&info, 0, sizeof(info)); | |
3a167bea | 1033 | r = kvmppc_ops->get_smmu_info(kvm, &info); |
5b74716e BH |
1034 | if (r >= 0 && copy_to_user(argp, &info, sizeof(info))) |
1035 | r = -EFAULT; | |
1036 | break; | |
1037 | } | |
8e591cb7 ME |
1038 | case KVM_PPC_RTAS_DEFINE_TOKEN: { |
1039 | struct kvm *kvm = filp->private_data; | |
1040 | ||
1041 | r = kvm_vm_ioctl_rtas_define_token(kvm, argp); | |
1042 | break; | |
1043 | } | |
3a167bea AK |
1044 | default: |
1045 | r = kvmppc_ops->arch_vm_ioctl(filp, ioctl, arg); | |
1046 | ||
1047 | #else /* CONFIG_PPC_BOOK3S_64 */ | |
bbf45ba5 | 1048 | default: |
367e1319 | 1049 | r = -ENOTTY; |
3a167bea | 1050 | #endif |
bbf45ba5 | 1051 | } |
15711e9c | 1052 | out: |
bbf45ba5 HB |
1053 | return r; |
1054 | } | |
1055 | ||
043cc4d7 SW |
1056 | static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)]; |
1057 | static unsigned long nr_lpids; | |
1058 | ||
1059 | long kvmppc_alloc_lpid(void) | |
1060 | { | |
1061 | long lpid; | |
1062 | ||
1063 | do { | |
1064 | lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS); | |
1065 | if (lpid >= nr_lpids) { | |
1066 | pr_err("%s: No LPIDs free\n", __func__); | |
1067 | return -ENOMEM; | |
1068 | } | |
1069 | } while (test_and_set_bit(lpid, lpid_inuse)); | |
1070 | ||
1071 | return lpid; | |
1072 | } | |
1073 | ||
1074 | void kvmppc_claim_lpid(long lpid) | |
1075 | { | |
1076 | set_bit(lpid, lpid_inuse); | |
1077 | } | |
1078 | ||
1079 | void kvmppc_free_lpid(long lpid) | |
1080 | { | |
1081 | clear_bit(lpid, lpid_inuse); | |
1082 | } | |
1083 | ||
1084 | void kvmppc_init_lpid(unsigned long nr_lpids_param) | |
1085 | { | |
1086 | nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param); | |
1087 | memset(lpid_inuse, 0, sizeof(lpid_inuse)); | |
1088 | } | |
1089 | ||
bbf45ba5 HB |
1090 | int kvm_arch_init(void *opaque) |
1091 | { | |
3a167bea AK |
1092 | if (kvmppc_ops) { |
1093 | printk(KERN_ERR "kvm: already loaded the other module\n"); | |
1094 | return -EEXIST; | |
1095 | } | |
1096 | kvmppc_ops = (struct kvmppc_ops *)opaque; | |
bbf45ba5 HB |
1097 | return 0; |
1098 | } | |
1099 | ||
1100 | void kvm_arch_exit(void) | |
1101 | { | |
3a167bea | 1102 | kvmppc_ops = NULL; |
bbf45ba5 | 1103 | } |