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> |
cbbc58d4 | 29 | #include <linux/module.h> |
bbf45ba5 HB |
30 | #include <asm/cputable.h> |
31 | #include <asm/uaccess.h> | |
32 | #include <asm/kvm_ppc.h> | |
83aae4a8 | 33 | #include <asm/tlbflush.h> |
371fefd6 | 34 | #include <asm/cputhreads.h> |
bd2be683 | 35 | #include <asm/irqflags.h> |
73e75b41 | 36 | #include "timing.h" |
5efdb4be | 37 | #include "irq.h" |
fad7b9b5 | 38 | #include "../mm/mmu_decl.h" |
bbf45ba5 | 39 | |
46f43c6e MT |
40 | #define CREATE_TRACE_POINTS |
41 | #include "trace.h" | |
42 | ||
cbbc58d4 AK |
43 | struct kvmppc_ops *kvmppc_hv_ops; |
44 | EXPORT_SYMBOL_GPL(kvmppc_hv_ops); | |
45 | struct kvmppc_ops *kvmppc_pr_ops; | |
46 | EXPORT_SYMBOL_GPL(kvmppc_pr_ops); | |
47 | ||
3a167bea | 48 | |
bbf45ba5 HB |
49 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) |
50 | { | |
9202e076 | 51 | return !!(v->arch.pending_exceptions) || |
dfd4d47e | 52 | v->requests; |
bbf45ba5 HB |
53 | } |
54 | ||
b6d33834 CD |
55 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) |
56 | { | |
57 | return 1; | |
58 | } | |
59 | ||
03d25c5b AG |
60 | /* |
61 | * Common checks before entering the guest world. Call with interrupts | |
62 | * disabled. | |
63 | * | |
7ee78855 AG |
64 | * returns: |
65 | * | |
66 | * == 1 if we're ready to go into guest state | |
67 | * <= 0 if we need to go back to the host with return value | |
03d25c5b AG |
68 | */ |
69 | int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu) | |
70 | { | |
7ee78855 | 71 | int r = 1; |
03d25c5b AG |
72 | |
73 | WARN_ON_ONCE(!irqs_disabled()); | |
74 | while (true) { | |
75 | if (need_resched()) { | |
76 | local_irq_enable(); | |
77 | cond_resched(); | |
78 | local_irq_disable(); | |
79 | continue; | |
80 | } | |
81 | ||
82 | if (signal_pending(current)) { | |
7ee78855 AG |
83 | kvmppc_account_exit(vcpu, SIGNAL_EXITS); |
84 | vcpu->run->exit_reason = KVM_EXIT_INTR; | |
85 | r = -EINTR; | |
03d25c5b AG |
86 | break; |
87 | } | |
88 | ||
5bd1cf11 SW |
89 | vcpu->mode = IN_GUEST_MODE; |
90 | ||
91 | /* | |
92 | * Reading vcpu->requests must happen after setting vcpu->mode, | |
93 | * so we don't miss a request because the requester sees | |
94 | * OUTSIDE_GUEST_MODE and assumes we'll be checking requests | |
95 | * before next entering the guest (and thus doesn't IPI). | |
96 | */ | |
03d25c5b | 97 | smp_mb(); |
5bd1cf11 | 98 | |
03d25c5b AG |
99 | if (vcpu->requests) { |
100 | /* Make sure we process requests preemptable */ | |
101 | local_irq_enable(); | |
102 | trace_kvm_check_requests(vcpu); | |
7c973a2e | 103 | r = kvmppc_core_check_requests(vcpu); |
03d25c5b | 104 | local_irq_disable(); |
7c973a2e AG |
105 | if (r > 0) |
106 | continue; | |
107 | break; | |
03d25c5b AG |
108 | } |
109 | ||
110 | if (kvmppc_core_prepare_to_enter(vcpu)) { | |
111 | /* interrupts got enabled in between, so we | |
112 | are back at square 1 */ | |
113 | continue; | |
114 | } | |
115 | ||
bd2be683 AG |
116 | #ifdef CONFIG_PPC64 |
117 | /* lazy EE magic */ | |
118 | hard_irq_disable(); | |
119 | if (lazy_irq_pending()) { | |
120 | /* Got an interrupt in between, try again */ | |
121 | local_irq_enable(); | |
122 | local_irq_disable(); | |
3766a4c6 | 123 | kvm_guest_exit(); |
bd2be683 AG |
124 | continue; |
125 | } | |
bd2be683 AG |
126 | #endif |
127 | ||
3766a4c6 | 128 | kvm_guest_enter(); |
03d25c5b AG |
129 | break; |
130 | } | |
131 | ||
132 | return r; | |
133 | } | |
2ba9f0d8 | 134 | EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter); |
03d25c5b | 135 | |
2a342ed5 AG |
136 | int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) |
137 | { | |
138 | int nr = kvmppc_get_gpr(vcpu, 11); | |
139 | int r; | |
140 | unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); | |
141 | unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); | |
142 | unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); | |
143 | unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); | |
144 | unsigned long r2 = 0; | |
145 | ||
146 | if (!(vcpu->arch.shared->msr & MSR_SF)) { | |
147 | /* 32 bit mode */ | |
148 | param1 &= 0xffffffff; | |
149 | param2 &= 0xffffffff; | |
150 | param3 &= 0xffffffff; | |
151 | param4 &= 0xffffffff; | |
152 | } | |
153 | ||
154 | switch (nr) { | |
fdcf8bd7 | 155 | case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE): |
5fc87407 AG |
156 | { |
157 | vcpu->arch.magic_page_pa = param1; | |
158 | vcpu->arch.magic_page_ea = param2; | |
159 | ||
b5904972 | 160 | r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7; |
7508e16c | 161 | |
fdcf8bd7 | 162 | r = EV_SUCCESS; |
5fc87407 AG |
163 | break; |
164 | } | |
fdcf8bd7 SY |
165 | case KVM_HCALL_TOKEN(KVM_HC_FEATURES): |
166 | r = EV_SUCCESS; | |
bf7ca4bd | 167 | #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2) |
a4cd8b23 | 168 | /* XXX Missing magic page on 44x */ |
5fc87407 AG |
169 | r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); |
170 | #endif | |
2a342ed5 AG |
171 | |
172 | /* Second return value is in r4 */ | |
2a342ed5 | 173 | break; |
9202e076 LYB |
174 | case EV_HCALL_TOKEN(EV_IDLE): |
175 | r = EV_SUCCESS; | |
176 | kvm_vcpu_block(vcpu); | |
177 | clear_bit(KVM_REQ_UNHALT, &vcpu->requests); | |
178 | break; | |
2a342ed5 | 179 | default: |
fdcf8bd7 | 180 | r = EV_UNIMPLEMENTED; |
2a342ed5 AG |
181 | break; |
182 | } | |
183 | ||
7508e16c AG |
184 | kvmppc_set_gpr(vcpu, 4, r2); |
185 | ||
2a342ed5 AG |
186 | return r; |
187 | } | |
2ba9f0d8 | 188 | EXPORT_SYMBOL_GPL(kvmppc_kvm_pv); |
bbf45ba5 | 189 | |
af8f38b3 AG |
190 | int kvmppc_sanity_check(struct kvm_vcpu *vcpu) |
191 | { | |
192 | int r = false; | |
193 | ||
194 | /* We have to know what CPU to virtualize */ | |
195 | if (!vcpu->arch.pvr) | |
196 | goto out; | |
197 | ||
198 | /* PAPR only works with book3s_64 */ | |
199 | if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled) | |
200 | goto out; | |
201 | ||
af8f38b3 | 202 | /* HV KVM can only do PAPR mode for now */ |
a78b55d1 | 203 | if (!vcpu->arch.papr_enabled && is_kvmppc_hv_enabled(vcpu->kvm)) |
af8f38b3 | 204 | goto out; |
af8f38b3 | 205 | |
d30f6e48 SW |
206 | #ifdef CONFIG_KVM_BOOKE_HV |
207 | if (!cpu_has_feature(CPU_FTR_EMB_HV)) | |
208 | goto out; | |
209 | #endif | |
210 | ||
af8f38b3 AG |
211 | r = true; |
212 | ||
213 | out: | |
214 | vcpu->arch.sane = r; | |
215 | return r ? 0 : -EINVAL; | |
216 | } | |
2ba9f0d8 | 217 | EXPORT_SYMBOL_GPL(kvmppc_sanity_check); |
af8f38b3 | 218 | |
bbf45ba5 HB |
219 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) |
220 | { | |
221 | enum emulation_result er; | |
222 | int r; | |
223 | ||
224 | er = kvmppc_emulate_instruction(run, vcpu); | |
225 | switch (er) { | |
226 | case EMULATE_DONE: | |
227 | /* Future optimization: only reload non-volatiles if they were | |
228 | * actually modified. */ | |
229 | r = RESUME_GUEST_NV; | |
230 | break; | |
231 | case EMULATE_DO_MMIO: | |
232 | run->exit_reason = KVM_EXIT_MMIO; | |
233 | /* We must reload nonvolatiles because "update" load/store | |
234 | * instructions modify register state. */ | |
235 | /* Future optimization: only reload non-volatiles if they were | |
236 | * actually modified. */ | |
237 | r = RESUME_HOST_NV; | |
238 | break; | |
239 | case EMULATE_FAIL: | |
240 | /* XXX Deliver Program interrupt to guest. */ | |
241 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, | |
c7f38f46 | 242 | kvmppc_get_last_inst(vcpu)); |
bbf45ba5 HB |
243 | r = RESUME_HOST; |
244 | break; | |
245 | default: | |
5a33169e AG |
246 | WARN_ON(1); |
247 | r = RESUME_GUEST; | |
bbf45ba5 HB |
248 | } |
249 | ||
250 | return r; | |
251 | } | |
2ba9f0d8 | 252 | EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio); |
bbf45ba5 | 253 | |
10474ae8 | 254 | int kvm_arch_hardware_enable(void *garbage) |
bbf45ba5 | 255 | { |
10474ae8 | 256 | return 0; |
bbf45ba5 HB |
257 | } |
258 | ||
259 | void kvm_arch_hardware_disable(void *garbage) | |
260 | { | |
261 | } | |
262 | ||
263 | int kvm_arch_hardware_setup(void) | |
264 | { | |
265 | return 0; | |
266 | } | |
267 | ||
268 | void kvm_arch_hardware_unsetup(void) | |
269 | { | |
270 | } | |
271 | ||
272 | void kvm_arch_check_processor_compat(void *rtn) | |
273 | { | |
9dd921cf | 274 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
bbf45ba5 HB |
275 | } |
276 | ||
e08b9637 | 277 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
bbf45ba5 | 278 | { |
cbbc58d4 AK |
279 | struct kvmppc_ops *kvm_ops = NULL; |
280 | /* | |
281 | * if we have both HV and PR enabled, default is HV | |
282 | */ | |
283 | if (type == 0) { | |
284 | if (kvmppc_hv_ops) | |
285 | kvm_ops = kvmppc_hv_ops; | |
286 | else | |
287 | kvm_ops = kvmppc_pr_ops; | |
288 | if (!kvm_ops) | |
289 | goto err_out; | |
290 | } else if (type == KVM_VM_PPC_HV) { | |
291 | if (!kvmppc_hv_ops) | |
292 | goto err_out; | |
293 | kvm_ops = kvmppc_hv_ops; | |
294 | } else if (type == KVM_VM_PPC_PR) { | |
295 | if (!kvmppc_pr_ops) | |
296 | goto err_out; | |
297 | kvm_ops = kvmppc_pr_ops; | |
298 | } else | |
299 | goto err_out; | |
300 | ||
301 | if (kvm_ops->owner && !try_module_get(kvm_ops->owner)) | |
302 | return -ENOENT; | |
303 | ||
304 | kvm->arch.kvm_ops = kvm_ops; | |
f9e0554d | 305 | return kvmppc_core_init_vm(kvm); |
cbbc58d4 AK |
306 | err_out: |
307 | return -EINVAL; | |
bbf45ba5 HB |
308 | } |
309 | ||
d89f5eff | 310 | void kvm_arch_destroy_vm(struct kvm *kvm) |
bbf45ba5 HB |
311 | { |
312 | unsigned int i; | |
988a2cae | 313 | struct kvm_vcpu *vcpu; |
bbf45ba5 | 314 | |
988a2cae GN |
315 | kvm_for_each_vcpu(i, vcpu, kvm) |
316 | kvm_arch_vcpu_free(vcpu); | |
317 | ||
318 | mutex_lock(&kvm->lock); | |
319 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) | |
320 | kvm->vcpus[i] = NULL; | |
321 | ||
322 | atomic_set(&kvm->online_vcpus, 0); | |
f9e0554d PM |
323 | |
324 | kvmppc_core_destroy_vm(kvm); | |
325 | ||
988a2cae | 326 | mutex_unlock(&kvm->lock); |
cbbc58d4 AK |
327 | |
328 | /* drop the module reference */ | |
329 | module_put(kvm->arch.kvm_ops->owner); | |
bbf45ba5 HB |
330 | } |
331 | ||
ad8ba2cd SY |
332 | void kvm_arch_sync_events(struct kvm *kvm) |
333 | { | |
334 | } | |
335 | ||
bbf45ba5 HB |
336 | int kvm_dev_ioctl_check_extension(long ext) |
337 | { | |
338 | int r; | |
cbbc58d4 AK |
339 | /* FIXME!! |
340 | * Should some of this be vm ioctl ? is it possible now ? | |
341 | */ | |
342 | int hv_enabled = kvmppc_hv_ops ? 1 : 0; | |
bbf45ba5 HB |
343 | |
344 | switch (ext) { | |
5ce941ee SW |
345 | #ifdef CONFIG_BOOKE |
346 | case KVM_CAP_PPC_BOOKE_SREGS: | |
f61c94bb | 347 | case KVM_CAP_PPC_BOOKE_WATCHDOG: |
1c810636 | 348 | case KVM_CAP_PPC_EPR: |
5ce941ee | 349 | #else |
e15a1137 | 350 | case KVM_CAP_PPC_SEGSTATE: |
1022fc3d | 351 | case KVM_CAP_PPC_HIOR: |
930b412a | 352 | case KVM_CAP_PPC_PAPR: |
5ce941ee | 353 | #endif |
18978768 | 354 | case KVM_CAP_PPC_UNSET_IRQ: |
7b4203e8 | 355 | case KVM_CAP_PPC_IRQ_LEVEL: |
71fbfd5f | 356 | case KVM_CAP_ENABLE_CAP: |
e24ed81f | 357 | case KVM_CAP_ONE_REG: |
0e673fb6 | 358 | case KVM_CAP_IOEVENTFD: |
5df554ad | 359 | case KVM_CAP_DEVICE_CTRL: |
de56a948 PM |
360 | r = 1; |
361 | break; | |
de56a948 | 362 | case KVM_CAP_PPC_PAIRED_SINGLES: |
ad0a048b | 363 | case KVM_CAP_PPC_OSI: |
15711e9c | 364 | case KVM_CAP_PPC_GET_PVINFO: |
bf7ca4bd | 365 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc | 366 | case KVM_CAP_SW_TLB: |
eb1e4f43 | 367 | #endif |
699cc876 | 368 | /* We support this only for PR */ |
cbbc58d4 | 369 | r = !hv_enabled; |
e15a1137 | 370 | break; |
699cc876 | 371 | #ifdef CONFIG_KVM_MMIO |
588968b6 LV |
372 | case KVM_CAP_COALESCED_MMIO: |
373 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
374 | break; | |
54738c09 | 375 | #endif |
699cc876 AK |
376 | #ifdef CONFIG_KVM_MPIC |
377 | case KVM_CAP_IRQ_MPIC: | |
378 | r = 1; | |
379 | break; | |
380 | #endif | |
381 | ||
f31e65e1 | 382 | #ifdef CONFIG_PPC_BOOK3S_64 |
54738c09 | 383 | case KVM_CAP_SPAPR_TCE: |
32fad281 | 384 | case KVM_CAP_PPC_ALLOC_HTAB: |
8e591cb7 | 385 | case KVM_CAP_PPC_RTAS: |
5975a2e0 PM |
386 | #ifdef CONFIG_KVM_XICS |
387 | case KVM_CAP_IRQ_XICS: | |
388 | #endif | |
54738c09 DG |
389 | r = 1; |
390 | break; | |
f31e65e1 | 391 | #endif /* CONFIG_PPC_BOOK3S_64 */ |
699cc876 | 392 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE |
371fefd6 | 393 | case KVM_CAP_PPC_SMT: |
cbbc58d4 | 394 | if (hv_enabled) |
699cc876 AK |
395 | r = threads_per_core; |
396 | else | |
397 | r = 0; | |
371fefd6 | 398 | break; |
aa04b4cc | 399 | case KVM_CAP_PPC_RMA: |
cbbc58d4 | 400 | r = hv_enabled; |
9e368f29 | 401 | /* PPC970 requires an RMA */ |
699cc876 | 402 | if (r && cpu_has_feature(CPU_FTR_ARCH_201)) |
9e368f29 | 403 | r = 2; |
aa04b4cc | 404 | break; |
f4800b1f | 405 | #endif |
342d3db7 | 406 | case KVM_CAP_SYNC_MMU: |
699cc876 | 407 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE |
cbbc58d4 | 408 | if (hv_enabled) |
699cc876 AK |
409 | r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0; |
410 | else | |
411 | r = 0; | |
f4800b1f AG |
412 | #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
413 | r = 1; | |
414 | #else | |
415 | r = 0; | |
a2932923 | 416 | #endif |
699cc876 AK |
417 | break; |
418 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE | |
a2932923 | 419 | case KVM_CAP_PPC_HTAB_FD: |
cbbc58d4 | 420 | r = hv_enabled; |
a2932923 | 421 | break; |
de56a948 | 422 | #endif |
b5434032 ME |
423 | case KVM_CAP_NR_VCPUS: |
424 | /* | |
425 | * Recommending a number of CPUs is somewhat arbitrary; we | |
426 | * return the number of present CPUs for -HV (since a host | |
427 | * will have secondary threads "offline"), and for other KVM | |
428 | * implementations just count online CPUs. | |
429 | */ | |
cbbc58d4 | 430 | if (hv_enabled) |
699cc876 AK |
431 | r = num_present_cpus(); |
432 | else | |
433 | r = num_online_cpus(); | |
b5434032 ME |
434 | break; |
435 | case KVM_CAP_MAX_VCPUS: | |
436 | r = KVM_MAX_VCPUS; | |
437 | break; | |
5b74716e BH |
438 | #ifdef CONFIG_PPC_BOOK3S_64 |
439 | case KVM_CAP_PPC_GET_SMMU_INFO: | |
440 | r = 1; | |
441 | break; | |
442 | #endif | |
bbf45ba5 HB |
443 | default: |
444 | r = 0; | |
445 | break; | |
446 | } | |
447 | return r; | |
448 | ||
449 | } | |
450 | ||
451 | long kvm_arch_dev_ioctl(struct file *filp, | |
452 | unsigned int ioctl, unsigned long arg) | |
453 | { | |
454 | return -EINVAL; | |
455 | } | |
456 | ||
5587027c | 457 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb TY |
458 | struct kvm_memory_slot *dont) |
459 | { | |
5587027c | 460 | kvmppc_core_free_memslot(kvm, free, dont); |
db3fe4eb TY |
461 | } |
462 | ||
5587027c AK |
463 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
464 | unsigned long npages) | |
db3fe4eb | 465 | { |
5587027c | 466 | return kvmppc_core_create_memslot(kvm, slot, npages); |
db3fe4eb TY |
467 | } |
468 | ||
e59dbe09 TY |
469 | void kvm_arch_memslots_updated(struct kvm *kvm) |
470 | { | |
471 | } | |
472 | ||
f7784b8e | 473 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
462fce46 | 474 | struct kvm_memory_slot *memslot, |
7b6195a9 TY |
475 | struct kvm_userspace_memory_region *mem, |
476 | enum kvm_mr_change change) | |
bbf45ba5 | 477 | { |
a66b48c3 | 478 | return kvmppc_core_prepare_memory_region(kvm, memslot, mem); |
bbf45ba5 HB |
479 | } |
480 | ||
f7784b8e | 481 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
462fce46 | 482 | struct kvm_userspace_memory_region *mem, |
8482644a TY |
483 | const struct kvm_memory_slot *old, |
484 | enum kvm_mr_change change) | |
f7784b8e | 485 | { |
dfe49dbd | 486 | kvmppc_core_commit_memory_region(kvm, mem, old); |
f7784b8e MT |
487 | } |
488 | ||
2df72e9b MT |
489 | void kvm_arch_flush_shadow_all(struct kvm *kvm) |
490 | { | |
491 | } | |
f7784b8e | 492 | |
2df72e9b MT |
493 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, |
494 | struct kvm_memory_slot *slot) | |
34d4cb8f | 495 | { |
dfe49dbd | 496 | kvmppc_core_flush_memslot(kvm, slot); |
34d4cb8f MT |
497 | } |
498 | ||
bbf45ba5 HB |
499 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
500 | { | |
73e75b41 HB |
501 | struct kvm_vcpu *vcpu; |
502 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
03cdab53 ME |
503 | if (!IS_ERR(vcpu)) { |
504 | vcpu->arch.wqp = &vcpu->wq; | |
06056bfb | 505 | kvmppc_create_vcpu_debugfs(vcpu, id); |
03cdab53 | 506 | } |
73e75b41 | 507 | return vcpu; |
bbf45ba5 HB |
508 | } |
509 | ||
42897d86 MT |
510 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) |
511 | { | |
512 | return 0; | |
513 | } | |
514 | ||
bbf45ba5 HB |
515 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) |
516 | { | |
a595405d AG |
517 | /* Make sure we're not using the vcpu anymore */ |
518 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
519 | tasklet_kill(&vcpu->arch.tasklet); | |
520 | ||
73e75b41 | 521 | kvmppc_remove_vcpu_debugfs(vcpu); |
eb1e4f43 SW |
522 | |
523 | switch (vcpu->arch.irq_type) { | |
524 | case KVMPPC_IRQ_MPIC: | |
525 | kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu); | |
526 | break; | |
bc5ad3f3 BH |
527 | case KVMPPC_IRQ_XICS: |
528 | kvmppc_xics_free_icp(vcpu); | |
529 | break; | |
eb1e4f43 SW |
530 | } |
531 | ||
db93f574 | 532 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
533 | } |
534 | ||
535 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
536 | { | |
537 | kvm_arch_vcpu_free(vcpu); | |
538 | } | |
539 | ||
540 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
541 | { | |
9dd921cf | 542 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
543 | } |
544 | ||
544c6761 AG |
545 | /* |
546 | * low level hrtimer wake routine. Because this runs in hardirq context | |
547 | * we schedule a tasklet to do the real work. | |
548 | */ | |
549 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
550 | { | |
551 | struct kvm_vcpu *vcpu; | |
552 | ||
553 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
554 | tasklet_schedule(&vcpu->arch.tasklet); | |
555 | ||
556 | return HRTIMER_NORESTART; | |
557 | } | |
558 | ||
bbf45ba5 HB |
559 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
560 | { | |
f61c94bb BB |
561 | int ret; |
562 | ||
544c6761 AG |
563 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
564 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
565 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 566 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 567 | |
09000adb BB |
568 | #ifdef CONFIG_KVM_EXIT_TIMING |
569 | mutex_init(&vcpu->arch.exit_timing_lock); | |
570 | #endif | |
f61c94bb BB |
571 | ret = kvmppc_subarch_vcpu_init(vcpu); |
572 | return ret; | |
bbf45ba5 HB |
573 | } |
574 | ||
575 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
576 | { | |
ecc0981f | 577 | kvmppc_mmu_destroy(vcpu); |
f61c94bb | 578 | kvmppc_subarch_vcpu_uninit(vcpu); |
bbf45ba5 HB |
579 | } |
580 | ||
581 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
582 | { | |
eab17672 SW |
583 | #ifdef CONFIG_BOOKE |
584 | /* | |
585 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
586 | * be used by the guest. | |
587 | * | |
588 | * On non-booke this is associated with Altivec and | |
589 | * is handled by code in book3s.c. | |
590 | */ | |
591 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
592 | #endif | |
9dd921cf | 593 | kvmppc_core_vcpu_load(vcpu, cpu); |
bbf45ba5 HB |
594 | } |
595 | ||
596 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
597 | { | |
9dd921cf | 598 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
599 | #ifdef CONFIG_BOOKE |
600 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
601 | #endif | |
bbf45ba5 HB |
602 | } |
603 | ||
bbf45ba5 HB |
604 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, |
605 | struct kvm_run *run) | |
606 | { | |
8e5b26b5 | 607 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
608 | } |
609 | ||
610 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
611 | struct kvm_run *run) | |
612 | { | |
69b61833 | 613 | u64 uninitialized_var(gpr); |
bbf45ba5 | 614 | |
8e5b26b5 | 615 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
616 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
617 | return; | |
618 | } | |
619 | ||
620 | if (vcpu->arch.mmio_is_bigendian) { | |
621 | switch (run->mmio.len) { | |
b104d066 | 622 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
623 | case 4: gpr = *(u32 *)run->mmio.data; break; |
624 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
625 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
626 | } |
627 | } else { | |
628 | /* Convert BE data from userland back to LE. */ | |
629 | switch (run->mmio.len) { | |
8e5b26b5 AG |
630 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
631 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
632 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
633 | } |
634 | } | |
8e5b26b5 | 635 | |
3587d534 AG |
636 | if (vcpu->arch.mmio_sign_extend) { |
637 | switch (run->mmio.len) { | |
638 | #ifdef CONFIG_PPC64 | |
639 | case 4: | |
640 | gpr = (s64)(s32)gpr; | |
641 | break; | |
642 | #endif | |
643 | case 2: | |
644 | gpr = (s64)(s16)gpr; | |
645 | break; | |
646 | case 1: | |
647 | gpr = (s64)(s8)gpr; | |
648 | break; | |
649 | } | |
650 | } | |
651 | ||
8e5b26b5 | 652 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 | 653 | |
b3c5d3c2 AG |
654 | switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) { |
655 | case KVM_MMIO_REG_GPR: | |
b104d066 AG |
656 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
657 | break; | |
b3c5d3c2 AG |
658 | case KVM_MMIO_REG_FPR: |
659 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 660 | break; |
287d5611 | 661 | #ifdef CONFIG_PPC_BOOK3S |
b3c5d3c2 AG |
662 | case KVM_MMIO_REG_QPR: |
663 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 664 | break; |
b3c5d3c2 AG |
665 | case KVM_MMIO_REG_FQPR: |
666 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
667 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 668 | break; |
287d5611 | 669 | #endif |
b104d066 AG |
670 | default: |
671 | BUG(); | |
672 | } | |
bbf45ba5 HB |
673 | } |
674 | ||
675 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
676 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
677 | { | |
ed840ee9 SW |
678 | int idx, ret; |
679 | ||
bbf45ba5 HB |
680 | if (bytes > sizeof(run->mmio.data)) { |
681 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
682 | run->mmio.len); | |
683 | } | |
684 | ||
685 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
686 | run->mmio.len = bytes; | |
687 | run->mmio.is_write = 0; | |
688 | ||
689 | vcpu->arch.io_gpr = rt; | |
690 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
691 | vcpu->mmio_needed = 1; | |
692 | vcpu->mmio_is_write = 0; | |
3587d534 | 693 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 | 694 | |
ed840ee9 SW |
695 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
696 | ||
697 | ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, | |
698 | bytes, &run->mmio.data); | |
699 | ||
700 | srcu_read_unlock(&vcpu->kvm->srcu, idx); | |
701 | ||
702 | if (!ret) { | |
0e673fb6 AG |
703 | kvmppc_complete_mmio_load(vcpu, run); |
704 | vcpu->mmio_needed = 0; | |
705 | return EMULATE_DONE; | |
706 | } | |
707 | ||
bbf45ba5 HB |
708 | return EMULATE_DO_MMIO; |
709 | } | |
2ba9f0d8 | 710 | EXPORT_SYMBOL_GPL(kvmppc_handle_load); |
bbf45ba5 | 711 | |
3587d534 AG |
712 | /* Same as above, but sign extends */ |
713 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
714 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
715 | { | |
716 | int r; | |
717 | ||
3587d534 | 718 | vcpu->arch.mmio_sign_extend = 1; |
0e673fb6 | 719 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); |
3587d534 AG |
720 | |
721 | return r; | |
722 | } | |
723 | ||
bbf45ba5 | 724 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 725 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
726 | { |
727 | void *data = run->mmio.data; | |
ed840ee9 | 728 | int idx, ret; |
bbf45ba5 HB |
729 | |
730 | if (bytes > sizeof(run->mmio.data)) { | |
731 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
732 | run->mmio.len); | |
733 | } | |
734 | ||
735 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
736 | run->mmio.len = bytes; | |
737 | run->mmio.is_write = 1; | |
738 | vcpu->mmio_needed = 1; | |
739 | vcpu->mmio_is_write = 1; | |
740 | ||
741 | /* Store the value at the lowest bytes in 'data'. */ | |
742 | if (is_bigendian) { | |
743 | switch (bytes) { | |
b104d066 | 744 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
745 | case 4: *(u32 *)data = val; break; |
746 | case 2: *(u16 *)data = val; break; | |
747 | case 1: *(u8 *)data = val; break; | |
748 | } | |
749 | } else { | |
750 | /* Store LE value into 'data'. */ | |
751 | switch (bytes) { | |
752 | case 4: st_le32(data, val); break; | |
753 | case 2: st_le16(data, val); break; | |
754 | case 1: *(u8 *)data = val; break; | |
755 | } | |
756 | } | |
757 | ||
ed840ee9 SW |
758 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
759 | ||
760 | ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, | |
761 | bytes, &run->mmio.data); | |
762 | ||
763 | srcu_read_unlock(&vcpu->kvm->srcu, idx); | |
764 | ||
765 | if (!ret) { | |
0e673fb6 AG |
766 | vcpu->mmio_needed = 0; |
767 | return EMULATE_DONE; | |
768 | } | |
769 | ||
bbf45ba5 HB |
770 | return EMULATE_DO_MMIO; |
771 | } | |
2ba9f0d8 | 772 | EXPORT_SYMBOL_GPL(kvmppc_handle_store); |
bbf45ba5 HB |
773 | |
774 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
775 | { | |
776 | int r; | |
777 | sigset_t sigsaved; | |
778 | ||
779 | if (vcpu->sigset_active) | |
780 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
781 | ||
782 | if (vcpu->mmio_needed) { | |
783 | if (!vcpu->mmio_is_write) | |
784 | kvmppc_complete_mmio_load(vcpu, run); | |
785 | vcpu->mmio_needed = 0; | |
786 | } else if (vcpu->arch.dcr_needed) { | |
787 | if (!vcpu->arch.dcr_is_write) | |
788 | kvmppc_complete_dcr_load(vcpu, run); | |
789 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
790 | } else if (vcpu->arch.osi_needed) { |
791 | u64 *gprs = run->osi.gprs; | |
792 | int i; | |
793 | ||
794 | for (i = 0; i < 32; i++) | |
795 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
796 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
797 | } else if (vcpu->arch.hcall_needed) { |
798 | int i; | |
799 | ||
800 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
801 | for (i = 0; i < 9; ++i) | |
802 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
803 | vcpu->arch.hcall_needed = 0; | |
1c810636 AG |
804 | #ifdef CONFIG_BOOKE |
805 | } else if (vcpu->arch.epr_needed) { | |
806 | kvmppc_set_epr(vcpu, run->epr.epr); | |
807 | vcpu->arch.epr_needed = 0; | |
808 | #endif | |
bbf45ba5 HB |
809 | } |
810 | ||
df6909e5 | 811 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
812 | |
813 | if (vcpu->sigset_active) | |
814 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
815 | ||
816 | return r; | |
817 | } | |
818 | ||
819 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
820 | { | |
19ccb76a | 821 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
4fe27d2a | 822 | kvmppc_core_dequeue_external(vcpu); |
19ccb76a PM |
823 | return 0; |
824 | } | |
825 | ||
826 | kvmppc_core_queue_external(vcpu, irq); | |
b6d33834 | 827 | |
dfd4d47e | 828 | kvm_vcpu_kick(vcpu); |
45c5eb67 | 829 | |
bbf45ba5 HB |
830 | return 0; |
831 | } | |
832 | ||
71fbfd5f AG |
833 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
834 | struct kvm_enable_cap *cap) | |
835 | { | |
836 | int r; | |
837 | ||
838 | if (cap->flags) | |
839 | return -EINVAL; | |
840 | ||
841 | switch (cap->cap) { | |
ad0a048b AG |
842 | case KVM_CAP_PPC_OSI: |
843 | r = 0; | |
844 | vcpu->arch.osi_enabled = true; | |
845 | break; | |
930b412a AG |
846 | case KVM_CAP_PPC_PAPR: |
847 | r = 0; | |
848 | vcpu->arch.papr_enabled = true; | |
849 | break; | |
1c810636 AG |
850 | case KVM_CAP_PPC_EPR: |
851 | r = 0; | |
5df554ad SW |
852 | if (cap->args[0]) |
853 | vcpu->arch.epr_flags |= KVMPPC_EPR_USER; | |
854 | else | |
855 | vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER; | |
1c810636 | 856 | break; |
f61c94bb BB |
857 | #ifdef CONFIG_BOOKE |
858 | case KVM_CAP_PPC_BOOKE_WATCHDOG: | |
859 | r = 0; | |
860 | vcpu->arch.watchdog_enabled = true; | |
861 | break; | |
862 | #endif | |
bf7ca4bd | 863 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
864 | case KVM_CAP_SW_TLB: { |
865 | struct kvm_config_tlb cfg; | |
866 | void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; | |
867 | ||
868 | r = -EFAULT; | |
869 | if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) | |
870 | break; | |
871 | ||
872 | r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); | |
873 | break; | |
eb1e4f43 SW |
874 | } |
875 | #endif | |
876 | #ifdef CONFIG_KVM_MPIC | |
877 | case KVM_CAP_IRQ_MPIC: { | |
70abaded | 878 | struct fd f; |
eb1e4f43 SW |
879 | struct kvm_device *dev; |
880 | ||
881 | r = -EBADF; | |
70abaded AV |
882 | f = fdget(cap->args[0]); |
883 | if (!f.file) | |
eb1e4f43 SW |
884 | break; |
885 | ||
886 | r = -EPERM; | |
70abaded | 887 | dev = kvm_device_from_filp(f.file); |
eb1e4f43 SW |
888 | if (dev) |
889 | r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]); | |
890 | ||
70abaded | 891 | fdput(f); |
eb1e4f43 | 892 | break; |
dc83b8bc SW |
893 | } |
894 | #endif | |
5975a2e0 PM |
895 | #ifdef CONFIG_KVM_XICS |
896 | case KVM_CAP_IRQ_XICS: { | |
70abaded | 897 | struct fd f; |
5975a2e0 PM |
898 | struct kvm_device *dev; |
899 | ||
900 | r = -EBADF; | |
70abaded AV |
901 | f = fdget(cap->args[0]); |
902 | if (!f.file) | |
5975a2e0 PM |
903 | break; |
904 | ||
905 | r = -EPERM; | |
70abaded | 906 | dev = kvm_device_from_filp(f.file); |
5975a2e0 PM |
907 | if (dev) |
908 | r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]); | |
909 | ||
70abaded | 910 | fdput(f); |
5975a2e0 PM |
911 | break; |
912 | } | |
913 | #endif /* CONFIG_KVM_XICS */ | |
71fbfd5f AG |
914 | default: |
915 | r = -EINVAL; | |
916 | break; | |
917 | } | |
918 | ||
af8f38b3 AG |
919 | if (!r) |
920 | r = kvmppc_sanity_check(vcpu); | |
921 | ||
71fbfd5f AG |
922 | return r; |
923 | } | |
924 | ||
bbf45ba5 HB |
925 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
926 | struct kvm_mp_state *mp_state) | |
927 | { | |
928 | return -EINVAL; | |
929 | } | |
930 | ||
931 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
932 | struct kvm_mp_state *mp_state) | |
933 | { | |
934 | return -EINVAL; | |
935 | } | |
936 | ||
937 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
938 | unsigned int ioctl, unsigned long arg) | |
939 | { | |
940 | struct kvm_vcpu *vcpu = filp->private_data; | |
941 | void __user *argp = (void __user *)arg; | |
942 | long r; | |
943 | ||
93736624 AK |
944 | switch (ioctl) { |
945 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
946 | struct kvm_interrupt irq; |
947 | r = -EFAULT; | |
948 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 949 | goto out; |
bbf45ba5 | 950 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 951 | goto out; |
bbf45ba5 | 952 | } |
19483d14 | 953 | |
71fbfd5f AG |
954 | case KVM_ENABLE_CAP: |
955 | { | |
956 | struct kvm_enable_cap cap; | |
957 | r = -EFAULT; | |
958 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
959 | goto out; | |
960 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
961 | break; | |
962 | } | |
dc83b8bc | 963 | |
e24ed81f AG |
964 | case KVM_SET_ONE_REG: |
965 | case KVM_GET_ONE_REG: | |
966 | { | |
967 | struct kvm_one_reg reg; | |
968 | r = -EFAULT; | |
969 | if (copy_from_user(®, argp, sizeof(reg))) | |
970 | goto out; | |
971 | if (ioctl == KVM_SET_ONE_REG) | |
972 | r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); | |
973 | else | |
974 | r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); | |
975 | break; | |
976 | } | |
977 | ||
bf7ca4bd | 978 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
979 | case KVM_DIRTY_TLB: { |
980 | struct kvm_dirty_tlb dirty; | |
981 | r = -EFAULT; | |
982 | if (copy_from_user(&dirty, argp, sizeof(dirty))) | |
983 | goto out; | |
984 | r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); | |
985 | break; | |
986 | } | |
987 | #endif | |
bbf45ba5 HB |
988 | default: |
989 | r = -EINVAL; | |
990 | } | |
991 | ||
992 | out: | |
993 | return r; | |
994 | } | |
995 | ||
5b1c1493 CO |
996 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
997 | { | |
998 | return VM_FAULT_SIGBUS; | |
999 | } | |
1000 | ||
15711e9c AG |
1001 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
1002 | { | |
784bafac SY |
1003 | u32 inst_nop = 0x60000000; |
1004 | #ifdef CONFIG_KVM_BOOKE_HV | |
1005 | u32 inst_sc1 = 0x44000022; | |
1006 | pvinfo->hcall[0] = inst_sc1; | |
1007 | pvinfo->hcall[1] = inst_nop; | |
1008 | pvinfo->hcall[2] = inst_nop; | |
1009 | pvinfo->hcall[3] = inst_nop; | |
1010 | #else | |
15711e9c AG |
1011 | u32 inst_lis = 0x3c000000; |
1012 | u32 inst_ori = 0x60000000; | |
15711e9c AG |
1013 | u32 inst_sc = 0x44000002; |
1014 | u32 inst_imm_mask = 0xffff; | |
1015 | ||
1016 | /* | |
1017 | * The hypercall to get into KVM from within guest context is as | |
1018 | * follows: | |
1019 | * | |
1020 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
1021 | * ori r0, KVM_SC_MAGIC_R0@l | |
1022 | * sc | |
1023 | * nop | |
1024 | */ | |
1025 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
1026 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
1027 | pvinfo->hcall[2] = inst_sc; | |
1028 | pvinfo->hcall[3] = inst_nop; | |
784bafac | 1029 | #endif |
15711e9c | 1030 | |
9202e076 LYB |
1031 | pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE; |
1032 | ||
15711e9c AG |
1033 | return 0; |
1034 | } | |
1035 | ||
5efdb4be AG |
1036 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event, |
1037 | bool line_status) | |
1038 | { | |
1039 | if (!irqchip_in_kernel(kvm)) | |
1040 | return -ENXIO; | |
1041 | ||
1042 | irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, | |
1043 | irq_event->irq, irq_event->level, | |
1044 | line_status); | |
1045 | return 0; | |
1046 | } | |
1047 | ||
bbf45ba5 HB |
1048 | long kvm_arch_vm_ioctl(struct file *filp, |
1049 | unsigned int ioctl, unsigned long arg) | |
1050 | { | |
5df554ad | 1051 | struct kvm *kvm __maybe_unused = filp->private_data; |
15711e9c | 1052 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
1053 | long r; |
1054 | ||
1055 | switch (ioctl) { | |
15711e9c AG |
1056 | case KVM_PPC_GET_PVINFO: { |
1057 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 1058 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
1059 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
1060 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
1061 | r = -EFAULT; | |
1062 | goto out; | |
1063 | } | |
1064 | ||
1065 | break; | |
1066 | } | |
f31e65e1 | 1067 | #ifdef CONFIG_PPC_BOOK3S_64 |
54738c09 DG |
1068 | case KVM_CREATE_SPAPR_TCE: { |
1069 | struct kvm_create_spapr_tce create_tce; | |
54738c09 DG |
1070 | |
1071 | r = -EFAULT; | |
1072 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
1073 | goto out; | |
1074 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
1075 | goto out; | |
1076 | } | |
5b74716e | 1077 | case KVM_PPC_GET_SMMU_INFO: { |
5b74716e | 1078 | struct kvm_ppc_smmu_info info; |
cbbc58d4 | 1079 | struct kvm *kvm = filp->private_data; |
5b74716e BH |
1080 | |
1081 | memset(&info, 0, sizeof(info)); | |
cbbc58d4 | 1082 | r = kvm->arch.kvm_ops->get_smmu_info(kvm, &info); |
5b74716e BH |
1083 | if (r >= 0 && copy_to_user(argp, &info, sizeof(info))) |
1084 | r = -EFAULT; | |
1085 | break; | |
1086 | } | |
8e591cb7 ME |
1087 | case KVM_PPC_RTAS_DEFINE_TOKEN: { |
1088 | struct kvm *kvm = filp->private_data; | |
1089 | ||
1090 | r = kvm_vm_ioctl_rtas_define_token(kvm, argp); | |
1091 | break; | |
1092 | } | |
cbbc58d4 AK |
1093 | default: { |
1094 | struct kvm *kvm = filp->private_data; | |
1095 | r = kvm->arch.kvm_ops->arch_vm_ioctl(filp, ioctl, arg); | |
1096 | } | |
3a167bea | 1097 | #else /* CONFIG_PPC_BOOK3S_64 */ |
bbf45ba5 | 1098 | default: |
367e1319 | 1099 | r = -ENOTTY; |
3a167bea | 1100 | #endif |
bbf45ba5 | 1101 | } |
15711e9c | 1102 | out: |
bbf45ba5 HB |
1103 | return r; |
1104 | } | |
1105 | ||
043cc4d7 SW |
1106 | static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)]; |
1107 | static unsigned long nr_lpids; | |
1108 | ||
1109 | long kvmppc_alloc_lpid(void) | |
1110 | { | |
1111 | long lpid; | |
1112 | ||
1113 | do { | |
1114 | lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS); | |
1115 | if (lpid >= nr_lpids) { | |
1116 | pr_err("%s: No LPIDs free\n", __func__); | |
1117 | return -ENOMEM; | |
1118 | } | |
1119 | } while (test_and_set_bit(lpid, lpid_inuse)); | |
1120 | ||
1121 | return lpid; | |
1122 | } | |
2ba9f0d8 | 1123 | EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid); |
043cc4d7 SW |
1124 | |
1125 | void kvmppc_claim_lpid(long lpid) | |
1126 | { | |
1127 | set_bit(lpid, lpid_inuse); | |
1128 | } | |
2ba9f0d8 | 1129 | EXPORT_SYMBOL_GPL(kvmppc_claim_lpid); |
043cc4d7 SW |
1130 | |
1131 | void kvmppc_free_lpid(long lpid) | |
1132 | { | |
1133 | clear_bit(lpid, lpid_inuse); | |
1134 | } | |
2ba9f0d8 | 1135 | EXPORT_SYMBOL_GPL(kvmppc_free_lpid); |
043cc4d7 SW |
1136 | |
1137 | void kvmppc_init_lpid(unsigned long nr_lpids_param) | |
1138 | { | |
1139 | nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param); | |
1140 | memset(lpid_inuse, 0, sizeof(lpid_inuse)); | |
1141 | } | |
2ba9f0d8 | 1142 | EXPORT_SYMBOL_GPL(kvmppc_init_lpid); |
043cc4d7 | 1143 | |
bbf45ba5 HB |
1144 | int kvm_arch_init(void *opaque) |
1145 | { | |
1146 | return 0; | |
1147 | } | |
1148 | ||
1149 | void kvm_arch_exit(void) | |
1150 | { | |
cbbc58d4 | 1151 | |
bbf45ba5 | 1152 | } |