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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 | /* |
56 | * Common checks before entering the guest world. Call with interrupts | |
57 | * disabled. | |
58 | * | |
7ee78855 AG |
59 | * returns: |
60 | * | |
61 | * == 1 if we're ready to go into guest state | |
62 | * <= 0 if we need to go back to the host with return value | |
03d25c5b AG |
63 | */ |
64 | int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu) | |
65 | { | |
7ee78855 | 66 | int r = 1; |
03d25c5b AG |
67 | |
68 | WARN_ON_ONCE(!irqs_disabled()); | |
69 | while (true) { | |
70 | if (need_resched()) { | |
71 | local_irq_enable(); | |
72 | cond_resched(); | |
73 | local_irq_disable(); | |
74 | continue; | |
75 | } | |
76 | ||
77 | if (signal_pending(current)) { | |
7ee78855 AG |
78 | kvmppc_account_exit(vcpu, SIGNAL_EXITS); |
79 | vcpu->run->exit_reason = KVM_EXIT_INTR; | |
80 | r = -EINTR; | |
03d25c5b AG |
81 | break; |
82 | } | |
83 | ||
5bd1cf11 SW |
84 | vcpu->mode = IN_GUEST_MODE; |
85 | ||
86 | /* | |
87 | * Reading vcpu->requests must happen after setting vcpu->mode, | |
88 | * so we don't miss a request because the requester sees | |
89 | * OUTSIDE_GUEST_MODE and assumes we'll be checking requests | |
90 | * before next entering the guest (and thus doesn't IPI). | |
91 | */ | |
03d25c5b | 92 | smp_mb(); |
5bd1cf11 | 93 | |
03d25c5b AG |
94 | if (vcpu->requests) { |
95 | /* Make sure we process requests preemptable */ | |
96 | local_irq_enable(); | |
97 | trace_kvm_check_requests(vcpu); | |
7c973a2e | 98 | r = kvmppc_core_check_requests(vcpu); |
03d25c5b | 99 | local_irq_disable(); |
7c973a2e AG |
100 | if (r > 0) |
101 | continue; | |
102 | break; | |
03d25c5b AG |
103 | } |
104 | ||
105 | if (kvmppc_core_prepare_to_enter(vcpu)) { | |
106 | /* interrupts got enabled in between, so we | |
107 | are back at square 1 */ | |
108 | continue; | |
109 | } | |
110 | ||
bd2be683 AG |
111 | #ifdef CONFIG_PPC64 |
112 | /* lazy EE magic */ | |
113 | hard_irq_disable(); | |
114 | if (lazy_irq_pending()) { | |
115 | /* Got an interrupt in between, try again */ | |
116 | local_irq_enable(); | |
117 | local_irq_disable(); | |
3766a4c6 | 118 | kvm_guest_exit(); |
bd2be683 AG |
119 | continue; |
120 | } | |
bd2be683 AG |
121 | #endif |
122 | ||
3766a4c6 | 123 | kvm_guest_enter(); |
03d25c5b AG |
124 | break; |
125 | } | |
126 | ||
127 | return r; | |
128 | } | |
03d25c5b | 129 | |
2a342ed5 AG |
130 | int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) |
131 | { | |
132 | int nr = kvmppc_get_gpr(vcpu, 11); | |
133 | int r; | |
134 | unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); | |
135 | unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); | |
136 | unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); | |
137 | unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); | |
138 | unsigned long r2 = 0; | |
139 | ||
140 | if (!(vcpu->arch.shared->msr & MSR_SF)) { | |
141 | /* 32 bit mode */ | |
142 | param1 &= 0xffffffff; | |
143 | param2 &= 0xffffffff; | |
144 | param3 &= 0xffffffff; | |
145 | param4 &= 0xffffffff; | |
146 | } | |
147 | ||
148 | switch (nr) { | |
fdcf8bd7 | 149 | case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE): |
5fc87407 AG |
150 | { |
151 | vcpu->arch.magic_page_pa = param1; | |
152 | vcpu->arch.magic_page_ea = param2; | |
153 | ||
b5904972 | 154 | r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7; |
7508e16c | 155 | |
fdcf8bd7 | 156 | r = EV_SUCCESS; |
5fc87407 AG |
157 | break; |
158 | } | |
fdcf8bd7 SY |
159 | case KVM_HCALL_TOKEN(KVM_HC_FEATURES): |
160 | r = EV_SUCCESS; | |
bf7ca4bd | 161 | #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2) |
a4cd8b23 | 162 | /* XXX Missing magic page on 44x */ |
5fc87407 AG |
163 | r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); |
164 | #endif | |
2a342ed5 AG |
165 | |
166 | /* Second return value is in r4 */ | |
2a342ed5 | 167 | break; |
9202e076 LYB |
168 | case EV_HCALL_TOKEN(EV_IDLE): |
169 | r = EV_SUCCESS; | |
170 | kvm_vcpu_block(vcpu); | |
171 | clear_bit(KVM_REQ_UNHALT, &vcpu->requests); | |
172 | break; | |
2a342ed5 | 173 | default: |
fdcf8bd7 | 174 | r = EV_UNIMPLEMENTED; |
2a342ed5 AG |
175 | break; |
176 | } | |
177 | ||
7508e16c AG |
178 | kvmppc_set_gpr(vcpu, 4, r2); |
179 | ||
2a342ed5 AG |
180 | return r; |
181 | } | |
bbf45ba5 | 182 | |
af8f38b3 AG |
183 | int kvmppc_sanity_check(struct kvm_vcpu *vcpu) |
184 | { | |
185 | int r = false; | |
186 | ||
187 | /* We have to know what CPU to virtualize */ | |
188 | if (!vcpu->arch.pvr) | |
189 | goto out; | |
190 | ||
191 | /* PAPR only works with book3s_64 */ | |
192 | if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled) | |
193 | goto out; | |
194 | ||
af8f38b3 | 195 | /* HV KVM can only do PAPR mode for now */ |
699cc876 | 196 | if (!vcpu->arch.papr_enabled && kvmppc_ops->is_hv_enabled) |
af8f38b3 | 197 | goto out; |
af8f38b3 | 198 | |
d30f6e48 SW |
199 | #ifdef CONFIG_KVM_BOOKE_HV |
200 | if (!cpu_has_feature(CPU_FTR_EMB_HV)) | |
201 | goto out; | |
202 | #endif | |
203 | ||
af8f38b3 AG |
204 | r = true; |
205 | ||
206 | out: | |
207 | vcpu->arch.sane = r; | |
208 | return r ? 0 : -EINVAL; | |
209 | } | |
210 | ||
bbf45ba5 HB |
211 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) |
212 | { | |
213 | enum emulation_result er; | |
214 | int r; | |
215 | ||
216 | er = kvmppc_emulate_instruction(run, vcpu); | |
217 | switch (er) { | |
218 | case EMULATE_DONE: | |
219 | /* Future optimization: only reload non-volatiles if they were | |
220 | * actually modified. */ | |
221 | r = RESUME_GUEST_NV; | |
222 | break; | |
223 | case EMULATE_DO_MMIO: | |
224 | run->exit_reason = KVM_EXIT_MMIO; | |
225 | /* We must reload nonvolatiles because "update" load/store | |
226 | * instructions modify register state. */ | |
227 | /* Future optimization: only reload non-volatiles if they were | |
228 | * actually modified. */ | |
229 | r = RESUME_HOST_NV; | |
230 | break; | |
231 | case EMULATE_FAIL: | |
232 | /* XXX Deliver Program interrupt to guest. */ | |
233 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, | |
c7f38f46 | 234 | kvmppc_get_last_inst(vcpu)); |
bbf45ba5 HB |
235 | r = RESUME_HOST; |
236 | break; | |
237 | default: | |
5a33169e AG |
238 | WARN_ON(1); |
239 | r = RESUME_GUEST; | |
bbf45ba5 HB |
240 | } |
241 | ||
242 | return r; | |
243 | } | |
244 | ||
10474ae8 | 245 | int kvm_arch_hardware_enable(void *garbage) |
bbf45ba5 | 246 | { |
10474ae8 | 247 | return 0; |
bbf45ba5 HB |
248 | } |
249 | ||
250 | void kvm_arch_hardware_disable(void *garbage) | |
251 | { | |
252 | } | |
253 | ||
254 | int kvm_arch_hardware_setup(void) | |
255 | { | |
256 | return 0; | |
257 | } | |
258 | ||
259 | void kvm_arch_hardware_unsetup(void) | |
260 | { | |
261 | } | |
262 | ||
263 | void kvm_arch_check_processor_compat(void *rtn) | |
264 | { | |
9dd921cf | 265 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
bbf45ba5 HB |
266 | } |
267 | ||
e08b9637 | 268 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
bbf45ba5 | 269 | { |
e08b9637 CO |
270 | if (type) |
271 | return -EINVAL; | |
272 | ||
f9e0554d | 273 | return kvmppc_core_init_vm(kvm); |
bbf45ba5 HB |
274 | } |
275 | ||
d89f5eff | 276 | void kvm_arch_destroy_vm(struct kvm *kvm) |
bbf45ba5 HB |
277 | { |
278 | unsigned int i; | |
988a2cae | 279 | struct kvm_vcpu *vcpu; |
bbf45ba5 | 280 | |
988a2cae GN |
281 | kvm_for_each_vcpu(i, vcpu, kvm) |
282 | kvm_arch_vcpu_free(vcpu); | |
283 | ||
284 | mutex_lock(&kvm->lock); | |
285 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) | |
286 | kvm->vcpus[i] = NULL; | |
287 | ||
288 | atomic_set(&kvm->online_vcpus, 0); | |
f9e0554d PM |
289 | |
290 | kvmppc_core_destroy_vm(kvm); | |
291 | ||
988a2cae | 292 | mutex_unlock(&kvm->lock); |
bbf45ba5 HB |
293 | } |
294 | ||
ad8ba2cd SY |
295 | void kvm_arch_sync_events(struct kvm *kvm) |
296 | { | |
297 | } | |
298 | ||
bbf45ba5 HB |
299 | int kvm_dev_ioctl_check_extension(long ext) |
300 | { | |
301 | int r; | |
302 | ||
303 | switch (ext) { | |
5ce941ee SW |
304 | #ifdef CONFIG_BOOKE |
305 | case KVM_CAP_PPC_BOOKE_SREGS: | |
f61c94bb | 306 | case KVM_CAP_PPC_BOOKE_WATCHDOG: |
1c810636 | 307 | case KVM_CAP_PPC_EPR: |
5ce941ee | 308 | #else |
e15a1137 | 309 | case KVM_CAP_PPC_SEGSTATE: |
1022fc3d | 310 | case KVM_CAP_PPC_HIOR: |
930b412a | 311 | case KVM_CAP_PPC_PAPR: |
5ce941ee | 312 | #endif |
18978768 | 313 | case KVM_CAP_PPC_UNSET_IRQ: |
7b4203e8 | 314 | case KVM_CAP_PPC_IRQ_LEVEL: |
71fbfd5f | 315 | case KVM_CAP_ENABLE_CAP: |
e24ed81f | 316 | case KVM_CAP_ONE_REG: |
0e673fb6 | 317 | case KVM_CAP_IOEVENTFD: |
5df554ad | 318 | case KVM_CAP_DEVICE_CTRL: |
de56a948 PM |
319 | r = 1; |
320 | break; | |
de56a948 | 321 | case KVM_CAP_PPC_PAIRED_SINGLES: |
ad0a048b | 322 | case KVM_CAP_PPC_OSI: |
15711e9c | 323 | case KVM_CAP_PPC_GET_PVINFO: |
bf7ca4bd | 324 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc | 325 | case KVM_CAP_SW_TLB: |
eb1e4f43 | 326 | #endif |
699cc876 AK |
327 | /* We support this only for PR */ |
328 | r = !kvmppc_ops->is_hv_enabled; | |
e15a1137 | 329 | break; |
699cc876 | 330 | #ifdef CONFIG_KVM_MMIO |
588968b6 LV |
331 | case KVM_CAP_COALESCED_MMIO: |
332 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
333 | break; | |
54738c09 | 334 | #endif |
699cc876 AK |
335 | #ifdef CONFIG_KVM_MPIC |
336 | case KVM_CAP_IRQ_MPIC: | |
337 | r = 1; | |
338 | break; | |
339 | #endif | |
340 | ||
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 | 350 | #endif /* CONFIG_PPC_BOOK3S_64 */ |
699cc876 | 351 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE |
371fefd6 | 352 | case KVM_CAP_PPC_SMT: |
699cc876 AK |
353 | if (kvmppc_ops->is_hv_enabled) |
354 | r = threads_per_core; | |
355 | else | |
356 | r = 0; | |
371fefd6 | 357 | break; |
aa04b4cc | 358 | case KVM_CAP_PPC_RMA: |
699cc876 | 359 | r = kvmppc_ops->is_hv_enabled; |
9e368f29 | 360 | /* PPC970 requires an RMA */ |
699cc876 | 361 | if (r && cpu_has_feature(CPU_FTR_ARCH_201)) |
9e368f29 | 362 | r = 2; |
aa04b4cc | 363 | break; |
f4800b1f | 364 | #endif |
342d3db7 | 365 | case KVM_CAP_SYNC_MMU: |
699cc876 AK |
366 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE |
367 | if (kvmppc_ops->is_hv_enabled) | |
368 | r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0; | |
369 | else | |
370 | r = 0; | |
f4800b1f AG |
371 | #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
372 | r = 1; | |
373 | #else | |
374 | r = 0; | |
a2932923 | 375 | #endif |
699cc876 AK |
376 | break; |
377 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE | |
a2932923 | 378 | case KVM_CAP_PPC_HTAB_FD: |
699cc876 | 379 | r = kvmppc_ops->is_hv_enabled; |
a2932923 | 380 | break; |
de56a948 | 381 | #endif |
b5434032 ME |
382 | case KVM_CAP_NR_VCPUS: |
383 | /* | |
384 | * Recommending a number of CPUs is somewhat arbitrary; we | |
385 | * return the number of present CPUs for -HV (since a host | |
386 | * will have secondary threads "offline"), and for other KVM | |
387 | * implementations just count online CPUs. | |
388 | */ | |
699cc876 AK |
389 | if (kvmppc_ops->is_hv_enabled) |
390 | r = num_present_cpus(); | |
391 | else | |
392 | r = num_online_cpus(); | |
b5434032 ME |
393 | break; |
394 | case KVM_CAP_MAX_VCPUS: | |
395 | r = KVM_MAX_VCPUS; | |
396 | break; | |
5b74716e BH |
397 | #ifdef CONFIG_PPC_BOOK3S_64 |
398 | case KVM_CAP_PPC_GET_SMMU_INFO: | |
399 | r = 1; | |
400 | break; | |
401 | #endif | |
bbf45ba5 HB |
402 | default: |
403 | r = 0; | |
404 | break; | |
405 | } | |
406 | return r; | |
407 | ||
408 | } | |
409 | ||
410 | long kvm_arch_dev_ioctl(struct file *filp, | |
411 | unsigned int ioctl, unsigned long arg) | |
412 | { | |
413 | return -EINVAL; | |
414 | } | |
415 | ||
db3fe4eb TY |
416 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
417 | struct kvm_memory_slot *dont) | |
418 | { | |
a66b48c3 | 419 | kvmppc_core_free_memslot(free, dont); |
db3fe4eb TY |
420 | } |
421 | ||
422 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages) | |
423 | { | |
a66b48c3 | 424 | return kvmppc_core_create_memslot(slot, npages); |
db3fe4eb TY |
425 | } |
426 | ||
e59dbe09 TY |
427 | void kvm_arch_memslots_updated(struct kvm *kvm) |
428 | { | |
429 | } | |
430 | ||
f7784b8e | 431 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
462fce46 | 432 | struct kvm_memory_slot *memslot, |
7b6195a9 TY |
433 | struct kvm_userspace_memory_region *mem, |
434 | enum kvm_mr_change change) | |
bbf45ba5 | 435 | { |
a66b48c3 | 436 | return kvmppc_core_prepare_memory_region(kvm, memslot, mem); |
bbf45ba5 HB |
437 | } |
438 | ||
f7784b8e | 439 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
462fce46 | 440 | struct kvm_userspace_memory_region *mem, |
8482644a TY |
441 | const struct kvm_memory_slot *old, |
442 | enum kvm_mr_change change) | |
f7784b8e | 443 | { |
dfe49dbd | 444 | kvmppc_core_commit_memory_region(kvm, mem, old); |
f7784b8e MT |
445 | } |
446 | ||
2df72e9b MT |
447 | void kvm_arch_flush_shadow_all(struct kvm *kvm) |
448 | { | |
449 | } | |
f7784b8e | 450 | |
2df72e9b MT |
451 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, |
452 | struct kvm_memory_slot *slot) | |
34d4cb8f | 453 | { |
dfe49dbd | 454 | kvmppc_core_flush_memslot(kvm, slot); |
34d4cb8f MT |
455 | } |
456 | ||
bbf45ba5 HB |
457 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
458 | { | |
73e75b41 HB |
459 | struct kvm_vcpu *vcpu; |
460 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
03cdab53 ME |
461 | if (!IS_ERR(vcpu)) { |
462 | vcpu->arch.wqp = &vcpu->wq; | |
06056bfb | 463 | kvmppc_create_vcpu_debugfs(vcpu, id); |
03cdab53 | 464 | } |
73e75b41 | 465 | return vcpu; |
bbf45ba5 HB |
466 | } |
467 | ||
42897d86 MT |
468 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) |
469 | { | |
470 | return 0; | |
471 | } | |
472 | ||
bbf45ba5 HB |
473 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) |
474 | { | |
a595405d AG |
475 | /* Make sure we're not using the vcpu anymore */ |
476 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
477 | tasklet_kill(&vcpu->arch.tasklet); | |
478 | ||
73e75b41 | 479 | kvmppc_remove_vcpu_debugfs(vcpu); |
eb1e4f43 SW |
480 | |
481 | switch (vcpu->arch.irq_type) { | |
482 | case KVMPPC_IRQ_MPIC: | |
483 | kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu); | |
484 | break; | |
bc5ad3f3 BH |
485 | case KVMPPC_IRQ_XICS: |
486 | kvmppc_xics_free_icp(vcpu); | |
487 | break; | |
eb1e4f43 SW |
488 | } |
489 | ||
db93f574 | 490 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
491 | } |
492 | ||
493 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
494 | { | |
495 | kvm_arch_vcpu_free(vcpu); | |
496 | } | |
497 | ||
498 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
499 | { | |
9dd921cf | 500 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
501 | } |
502 | ||
544c6761 AG |
503 | /* |
504 | * low level hrtimer wake routine. Because this runs in hardirq context | |
505 | * we schedule a tasklet to do the real work. | |
506 | */ | |
507 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
508 | { | |
509 | struct kvm_vcpu *vcpu; | |
510 | ||
511 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
512 | tasklet_schedule(&vcpu->arch.tasklet); | |
513 | ||
514 | return HRTIMER_NORESTART; | |
515 | } | |
516 | ||
bbf45ba5 HB |
517 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
518 | { | |
f61c94bb BB |
519 | int ret; |
520 | ||
544c6761 AG |
521 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
522 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
523 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 524 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 525 | |
09000adb BB |
526 | #ifdef CONFIG_KVM_EXIT_TIMING |
527 | mutex_init(&vcpu->arch.exit_timing_lock); | |
528 | #endif | |
f61c94bb BB |
529 | ret = kvmppc_subarch_vcpu_init(vcpu); |
530 | return ret; | |
bbf45ba5 HB |
531 | } |
532 | ||
533 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
534 | { | |
ecc0981f | 535 | kvmppc_mmu_destroy(vcpu); |
f61c94bb | 536 | kvmppc_subarch_vcpu_uninit(vcpu); |
bbf45ba5 HB |
537 | } |
538 | ||
539 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
540 | { | |
eab17672 SW |
541 | #ifdef CONFIG_BOOKE |
542 | /* | |
543 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
544 | * be used by the guest. | |
545 | * | |
546 | * On non-booke this is associated with Altivec and | |
547 | * is handled by code in book3s.c. | |
548 | */ | |
549 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
550 | #endif | |
9dd921cf | 551 | kvmppc_core_vcpu_load(vcpu, cpu); |
bbf45ba5 HB |
552 | } |
553 | ||
554 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
555 | { | |
9dd921cf | 556 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
557 | #ifdef CONFIG_BOOKE |
558 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
559 | #endif | |
bbf45ba5 HB |
560 | } |
561 | ||
bbf45ba5 HB |
562 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, |
563 | struct kvm_run *run) | |
564 | { | |
8e5b26b5 | 565 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
566 | } |
567 | ||
568 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
569 | struct kvm_run *run) | |
570 | { | |
69b61833 | 571 | u64 uninitialized_var(gpr); |
bbf45ba5 | 572 | |
8e5b26b5 | 573 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
574 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
575 | return; | |
576 | } | |
577 | ||
578 | if (vcpu->arch.mmio_is_bigendian) { | |
579 | switch (run->mmio.len) { | |
b104d066 | 580 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
581 | case 4: gpr = *(u32 *)run->mmio.data; break; |
582 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
583 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
584 | } |
585 | } else { | |
586 | /* Convert BE data from userland back to LE. */ | |
587 | switch (run->mmio.len) { | |
8e5b26b5 AG |
588 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
589 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
590 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
591 | } |
592 | } | |
8e5b26b5 | 593 | |
3587d534 AG |
594 | if (vcpu->arch.mmio_sign_extend) { |
595 | switch (run->mmio.len) { | |
596 | #ifdef CONFIG_PPC64 | |
597 | case 4: | |
598 | gpr = (s64)(s32)gpr; | |
599 | break; | |
600 | #endif | |
601 | case 2: | |
602 | gpr = (s64)(s16)gpr; | |
603 | break; | |
604 | case 1: | |
605 | gpr = (s64)(s8)gpr; | |
606 | break; | |
607 | } | |
608 | } | |
609 | ||
8e5b26b5 | 610 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 | 611 | |
b3c5d3c2 AG |
612 | switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) { |
613 | case KVM_MMIO_REG_GPR: | |
b104d066 AG |
614 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
615 | break; | |
b3c5d3c2 AG |
616 | case KVM_MMIO_REG_FPR: |
617 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 618 | break; |
287d5611 | 619 | #ifdef CONFIG_PPC_BOOK3S |
b3c5d3c2 AG |
620 | case KVM_MMIO_REG_QPR: |
621 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 622 | break; |
b3c5d3c2 AG |
623 | case KVM_MMIO_REG_FQPR: |
624 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
625 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 626 | break; |
287d5611 | 627 | #endif |
b104d066 AG |
628 | default: |
629 | BUG(); | |
630 | } | |
bbf45ba5 HB |
631 | } |
632 | ||
633 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
634 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
635 | { | |
ed840ee9 SW |
636 | int idx, ret; |
637 | ||
bbf45ba5 HB |
638 | if (bytes > sizeof(run->mmio.data)) { |
639 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
640 | run->mmio.len); | |
641 | } | |
642 | ||
643 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
644 | run->mmio.len = bytes; | |
645 | run->mmio.is_write = 0; | |
646 | ||
647 | vcpu->arch.io_gpr = rt; | |
648 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
649 | vcpu->mmio_needed = 1; | |
650 | vcpu->mmio_is_write = 0; | |
3587d534 | 651 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 | 652 | |
ed840ee9 SW |
653 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
654 | ||
655 | ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, | |
656 | bytes, &run->mmio.data); | |
657 | ||
658 | srcu_read_unlock(&vcpu->kvm->srcu, idx); | |
659 | ||
660 | if (!ret) { | |
0e673fb6 AG |
661 | kvmppc_complete_mmio_load(vcpu, run); |
662 | vcpu->mmio_needed = 0; | |
663 | return EMULATE_DONE; | |
664 | } | |
665 | ||
bbf45ba5 HB |
666 | return EMULATE_DO_MMIO; |
667 | } | |
668 | ||
3587d534 AG |
669 | /* Same as above, but sign extends */ |
670 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
671 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
672 | { | |
673 | int r; | |
674 | ||
3587d534 | 675 | vcpu->arch.mmio_sign_extend = 1; |
0e673fb6 | 676 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); |
3587d534 AG |
677 | |
678 | return r; | |
679 | } | |
680 | ||
bbf45ba5 | 681 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 682 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
683 | { |
684 | void *data = run->mmio.data; | |
ed840ee9 | 685 | int idx, ret; |
bbf45ba5 HB |
686 | |
687 | if (bytes > sizeof(run->mmio.data)) { | |
688 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
689 | run->mmio.len); | |
690 | } | |
691 | ||
692 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
693 | run->mmio.len = bytes; | |
694 | run->mmio.is_write = 1; | |
695 | vcpu->mmio_needed = 1; | |
696 | vcpu->mmio_is_write = 1; | |
697 | ||
698 | /* Store the value at the lowest bytes in 'data'. */ | |
699 | if (is_bigendian) { | |
700 | switch (bytes) { | |
b104d066 | 701 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
702 | case 4: *(u32 *)data = val; break; |
703 | case 2: *(u16 *)data = val; break; | |
704 | case 1: *(u8 *)data = val; break; | |
705 | } | |
706 | } else { | |
707 | /* Store LE value into 'data'. */ | |
708 | switch (bytes) { | |
709 | case 4: st_le32(data, val); break; | |
710 | case 2: st_le16(data, val); break; | |
711 | case 1: *(u8 *)data = val; break; | |
712 | } | |
713 | } | |
714 | ||
ed840ee9 SW |
715 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
716 | ||
717 | ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, | |
718 | bytes, &run->mmio.data); | |
719 | ||
720 | srcu_read_unlock(&vcpu->kvm->srcu, idx); | |
721 | ||
722 | if (!ret) { | |
0e673fb6 AG |
723 | vcpu->mmio_needed = 0; |
724 | return EMULATE_DONE; | |
725 | } | |
726 | ||
bbf45ba5 HB |
727 | return EMULATE_DO_MMIO; |
728 | } | |
729 | ||
730 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
731 | { | |
732 | int r; | |
733 | sigset_t sigsaved; | |
734 | ||
735 | if (vcpu->sigset_active) | |
736 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
737 | ||
738 | if (vcpu->mmio_needed) { | |
739 | if (!vcpu->mmio_is_write) | |
740 | kvmppc_complete_mmio_load(vcpu, run); | |
741 | vcpu->mmio_needed = 0; | |
742 | } else if (vcpu->arch.dcr_needed) { | |
743 | if (!vcpu->arch.dcr_is_write) | |
744 | kvmppc_complete_dcr_load(vcpu, run); | |
745 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
746 | } else if (vcpu->arch.osi_needed) { |
747 | u64 *gprs = run->osi.gprs; | |
748 | int i; | |
749 | ||
750 | for (i = 0; i < 32; i++) | |
751 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
752 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
753 | } else if (vcpu->arch.hcall_needed) { |
754 | int i; | |
755 | ||
756 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
757 | for (i = 0; i < 9; ++i) | |
758 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
759 | vcpu->arch.hcall_needed = 0; | |
1c810636 AG |
760 | #ifdef CONFIG_BOOKE |
761 | } else if (vcpu->arch.epr_needed) { | |
762 | kvmppc_set_epr(vcpu, run->epr.epr); | |
763 | vcpu->arch.epr_needed = 0; | |
764 | #endif | |
bbf45ba5 HB |
765 | } |
766 | ||
df6909e5 | 767 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
768 | |
769 | if (vcpu->sigset_active) | |
770 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
771 | ||
772 | return r; | |
773 | } | |
774 | ||
775 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
776 | { | |
19ccb76a | 777 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
4fe27d2a | 778 | kvmppc_core_dequeue_external(vcpu); |
19ccb76a PM |
779 | return 0; |
780 | } | |
781 | ||
782 | kvmppc_core_queue_external(vcpu, irq); | |
b6d33834 | 783 | |
dfd4d47e | 784 | kvm_vcpu_kick(vcpu); |
45c5eb67 | 785 | |
bbf45ba5 HB |
786 | return 0; |
787 | } | |
788 | ||
71fbfd5f AG |
789 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
790 | struct kvm_enable_cap *cap) | |
791 | { | |
792 | int r; | |
793 | ||
794 | if (cap->flags) | |
795 | return -EINVAL; | |
796 | ||
797 | switch (cap->cap) { | |
ad0a048b AG |
798 | case KVM_CAP_PPC_OSI: |
799 | r = 0; | |
800 | vcpu->arch.osi_enabled = true; | |
801 | break; | |
930b412a AG |
802 | case KVM_CAP_PPC_PAPR: |
803 | r = 0; | |
804 | vcpu->arch.papr_enabled = true; | |
805 | break; | |
1c810636 AG |
806 | case KVM_CAP_PPC_EPR: |
807 | r = 0; | |
5df554ad SW |
808 | if (cap->args[0]) |
809 | vcpu->arch.epr_flags |= KVMPPC_EPR_USER; | |
810 | else | |
811 | vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER; | |
1c810636 | 812 | break; |
f61c94bb BB |
813 | #ifdef CONFIG_BOOKE |
814 | case KVM_CAP_PPC_BOOKE_WATCHDOG: | |
815 | r = 0; | |
816 | vcpu->arch.watchdog_enabled = true; | |
817 | break; | |
818 | #endif | |
bf7ca4bd | 819 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
820 | case KVM_CAP_SW_TLB: { |
821 | struct kvm_config_tlb cfg; | |
822 | void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; | |
823 | ||
824 | r = -EFAULT; | |
825 | if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) | |
826 | break; | |
827 | ||
828 | r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); | |
829 | break; | |
eb1e4f43 SW |
830 | } |
831 | #endif | |
832 | #ifdef CONFIG_KVM_MPIC | |
833 | case KVM_CAP_IRQ_MPIC: { | |
70abaded | 834 | struct fd f; |
eb1e4f43 SW |
835 | struct kvm_device *dev; |
836 | ||
837 | r = -EBADF; | |
70abaded AV |
838 | f = fdget(cap->args[0]); |
839 | if (!f.file) | |
eb1e4f43 SW |
840 | break; |
841 | ||
842 | r = -EPERM; | |
70abaded | 843 | dev = kvm_device_from_filp(f.file); |
eb1e4f43 SW |
844 | if (dev) |
845 | r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]); | |
846 | ||
70abaded | 847 | fdput(f); |
eb1e4f43 | 848 | break; |
dc83b8bc SW |
849 | } |
850 | #endif | |
5975a2e0 PM |
851 | #ifdef CONFIG_KVM_XICS |
852 | case KVM_CAP_IRQ_XICS: { | |
70abaded | 853 | struct fd f; |
5975a2e0 PM |
854 | struct kvm_device *dev; |
855 | ||
856 | r = -EBADF; | |
70abaded AV |
857 | f = fdget(cap->args[0]); |
858 | if (!f.file) | |
5975a2e0 PM |
859 | break; |
860 | ||
861 | r = -EPERM; | |
70abaded | 862 | dev = kvm_device_from_filp(f.file); |
5975a2e0 PM |
863 | if (dev) |
864 | r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]); | |
865 | ||
70abaded | 866 | fdput(f); |
5975a2e0 PM |
867 | break; |
868 | } | |
869 | #endif /* CONFIG_KVM_XICS */ | |
71fbfd5f AG |
870 | default: |
871 | r = -EINVAL; | |
872 | break; | |
873 | } | |
874 | ||
af8f38b3 AG |
875 | if (!r) |
876 | r = kvmppc_sanity_check(vcpu); | |
877 | ||
71fbfd5f AG |
878 | return r; |
879 | } | |
880 | ||
bbf45ba5 HB |
881 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
882 | struct kvm_mp_state *mp_state) | |
883 | { | |
884 | return -EINVAL; | |
885 | } | |
886 | ||
887 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
888 | struct kvm_mp_state *mp_state) | |
889 | { | |
890 | return -EINVAL; | |
891 | } | |
892 | ||
893 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
894 | unsigned int ioctl, unsigned long arg) | |
895 | { | |
896 | struct kvm_vcpu *vcpu = filp->private_data; | |
897 | void __user *argp = (void __user *)arg; | |
898 | long r; | |
899 | ||
93736624 AK |
900 | switch (ioctl) { |
901 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
902 | struct kvm_interrupt irq; |
903 | r = -EFAULT; | |
904 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 905 | goto out; |
bbf45ba5 | 906 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 907 | goto out; |
bbf45ba5 | 908 | } |
19483d14 | 909 | |
71fbfd5f AG |
910 | case KVM_ENABLE_CAP: |
911 | { | |
912 | struct kvm_enable_cap cap; | |
913 | r = -EFAULT; | |
914 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
915 | goto out; | |
916 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
917 | break; | |
918 | } | |
dc83b8bc | 919 | |
e24ed81f AG |
920 | case KVM_SET_ONE_REG: |
921 | case KVM_GET_ONE_REG: | |
922 | { | |
923 | struct kvm_one_reg reg; | |
924 | r = -EFAULT; | |
925 | if (copy_from_user(®, argp, sizeof(reg))) | |
926 | goto out; | |
927 | if (ioctl == KVM_SET_ONE_REG) | |
928 | r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); | |
929 | else | |
930 | r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); | |
931 | break; | |
932 | } | |
933 | ||
bf7ca4bd | 934 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
935 | case KVM_DIRTY_TLB: { |
936 | struct kvm_dirty_tlb dirty; | |
937 | r = -EFAULT; | |
938 | if (copy_from_user(&dirty, argp, sizeof(dirty))) | |
939 | goto out; | |
940 | r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); | |
941 | break; | |
942 | } | |
943 | #endif | |
bbf45ba5 HB |
944 | default: |
945 | r = -EINVAL; | |
946 | } | |
947 | ||
948 | out: | |
949 | return r; | |
950 | } | |
951 | ||
5b1c1493 CO |
952 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
953 | { | |
954 | return VM_FAULT_SIGBUS; | |
955 | } | |
956 | ||
15711e9c AG |
957 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
958 | { | |
784bafac SY |
959 | u32 inst_nop = 0x60000000; |
960 | #ifdef CONFIG_KVM_BOOKE_HV | |
961 | u32 inst_sc1 = 0x44000022; | |
962 | pvinfo->hcall[0] = inst_sc1; | |
963 | pvinfo->hcall[1] = inst_nop; | |
964 | pvinfo->hcall[2] = inst_nop; | |
965 | pvinfo->hcall[3] = inst_nop; | |
966 | #else | |
15711e9c AG |
967 | u32 inst_lis = 0x3c000000; |
968 | u32 inst_ori = 0x60000000; | |
15711e9c AG |
969 | u32 inst_sc = 0x44000002; |
970 | u32 inst_imm_mask = 0xffff; | |
971 | ||
972 | /* | |
973 | * The hypercall to get into KVM from within guest context is as | |
974 | * follows: | |
975 | * | |
976 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
977 | * ori r0, KVM_SC_MAGIC_R0@l | |
978 | * sc | |
979 | * nop | |
980 | */ | |
981 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
982 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
983 | pvinfo->hcall[2] = inst_sc; | |
984 | pvinfo->hcall[3] = inst_nop; | |
784bafac | 985 | #endif |
15711e9c | 986 | |
9202e076 LYB |
987 | pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE; |
988 | ||
15711e9c AG |
989 | return 0; |
990 | } | |
991 | ||
5efdb4be AG |
992 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event, |
993 | bool line_status) | |
994 | { | |
995 | if (!irqchip_in_kernel(kvm)) | |
996 | return -ENXIO; | |
997 | ||
998 | irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, | |
999 | irq_event->irq, irq_event->level, | |
1000 | line_status); | |
1001 | return 0; | |
1002 | } | |
1003 | ||
bbf45ba5 HB |
1004 | long kvm_arch_vm_ioctl(struct file *filp, |
1005 | unsigned int ioctl, unsigned long arg) | |
1006 | { | |
5df554ad | 1007 | struct kvm *kvm __maybe_unused = filp->private_data; |
15711e9c | 1008 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
1009 | long r; |
1010 | ||
1011 | switch (ioctl) { | |
15711e9c AG |
1012 | case KVM_PPC_GET_PVINFO: { |
1013 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 1014 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
1015 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
1016 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
1017 | r = -EFAULT; | |
1018 | goto out; | |
1019 | } | |
1020 | ||
1021 | break; | |
1022 | } | |
f31e65e1 | 1023 | #ifdef CONFIG_PPC_BOOK3S_64 |
54738c09 DG |
1024 | case KVM_CREATE_SPAPR_TCE: { |
1025 | struct kvm_create_spapr_tce create_tce; | |
54738c09 DG |
1026 | |
1027 | r = -EFAULT; | |
1028 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
1029 | goto out; | |
1030 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
1031 | goto out; | |
1032 | } | |
5b74716e | 1033 | case KVM_PPC_GET_SMMU_INFO: { |
5b74716e BH |
1034 | struct kvm_ppc_smmu_info info; |
1035 | ||
1036 | memset(&info, 0, sizeof(info)); | |
3a167bea | 1037 | r = kvmppc_ops->get_smmu_info(kvm, &info); |
5b74716e BH |
1038 | if (r >= 0 && copy_to_user(argp, &info, sizeof(info))) |
1039 | r = -EFAULT; | |
1040 | break; | |
1041 | } | |
8e591cb7 ME |
1042 | case KVM_PPC_RTAS_DEFINE_TOKEN: { |
1043 | struct kvm *kvm = filp->private_data; | |
1044 | ||
1045 | r = kvm_vm_ioctl_rtas_define_token(kvm, argp); | |
1046 | break; | |
1047 | } | |
3a167bea AK |
1048 | default: |
1049 | r = kvmppc_ops->arch_vm_ioctl(filp, ioctl, arg); | |
1050 | ||
1051 | #else /* CONFIG_PPC_BOOK3S_64 */ | |
bbf45ba5 | 1052 | default: |
367e1319 | 1053 | r = -ENOTTY; |
3a167bea | 1054 | #endif |
bbf45ba5 | 1055 | } |
15711e9c | 1056 | out: |
bbf45ba5 HB |
1057 | return r; |
1058 | } | |
1059 | ||
043cc4d7 SW |
1060 | static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)]; |
1061 | static unsigned long nr_lpids; | |
1062 | ||
1063 | long kvmppc_alloc_lpid(void) | |
1064 | { | |
1065 | long lpid; | |
1066 | ||
1067 | do { | |
1068 | lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS); | |
1069 | if (lpid >= nr_lpids) { | |
1070 | pr_err("%s: No LPIDs free\n", __func__); | |
1071 | return -ENOMEM; | |
1072 | } | |
1073 | } while (test_and_set_bit(lpid, lpid_inuse)); | |
1074 | ||
1075 | return lpid; | |
1076 | } | |
1077 | ||
1078 | void kvmppc_claim_lpid(long lpid) | |
1079 | { | |
1080 | set_bit(lpid, lpid_inuse); | |
1081 | } | |
1082 | ||
1083 | void kvmppc_free_lpid(long lpid) | |
1084 | { | |
1085 | clear_bit(lpid, lpid_inuse); | |
1086 | } | |
1087 | ||
1088 | void kvmppc_init_lpid(unsigned long nr_lpids_param) | |
1089 | { | |
1090 | nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param); | |
1091 | memset(lpid_inuse, 0, sizeof(lpid_inuse)); | |
1092 | } | |
1093 | ||
bbf45ba5 HB |
1094 | int kvm_arch_init(void *opaque) |
1095 | { | |
3a167bea AK |
1096 | if (kvmppc_ops) { |
1097 | printk(KERN_ERR "kvm: already loaded the other module\n"); | |
1098 | return -EEXIST; | |
1099 | } | |
1100 | kvmppc_ops = (struct kvmppc_ops *)opaque; | |
bbf45ba5 HB |
1101 | return 0; |
1102 | } | |
1103 | ||
1104 | void kvm_arch_exit(void) | |
1105 | { | |
3a167bea | 1106 | kvmppc_ops = NULL; |
bbf45ba5 | 1107 | } |