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 | { | |
6c85f52b SW |
71 | int r; |
72 | ||
73 | WARN_ON(irqs_disabled()); | |
74 | hard_irq_disable(); | |
03d25c5b | 75 | |
03d25c5b AG |
76 | while (true) { |
77 | if (need_resched()) { | |
78 | local_irq_enable(); | |
79 | cond_resched(); | |
6c85f52b | 80 | hard_irq_disable(); |
03d25c5b AG |
81 | continue; |
82 | } | |
83 | ||
84 | if (signal_pending(current)) { | |
7ee78855 AG |
85 | kvmppc_account_exit(vcpu, SIGNAL_EXITS); |
86 | vcpu->run->exit_reason = KVM_EXIT_INTR; | |
87 | r = -EINTR; | |
03d25c5b AG |
88 | break; |
89 | } | |
90 | ||
5bd1cf11 SW |
91 | vcpu->mode = IN_GUEST_MODE; |
92 | ||
93 | /* | |
94 | * Reading vcpu->requests must happen after setting vcpu->mode, | |
95 | * so we don't miss a request because the requester sees | |
96 | * OUTSIDE_GUEST_MODE and assumes we'll be checking requests | |
97 | * before next entering the guest (and thus doesn't IPI). | |
98 | */ | |
03d25c5b | 99 | smp_mb(); |
5bd1cf11 | 100 | |
03d25c5b AG |
101 | if (vcpu->requests) { |
102 | /* Make sure we process requests preemptable */ | |
103 | local_irq_enable(); | |
104 | trace_kvm_check_requests(vcpu); | |
7c973a2e | 105 | r = kvmppc_core_check_requests(vcpu); |
6c85f52b | 106 | hard_irq_disable(); |
7c973a2e AG |
107 | if (r > 0) |
108 | continue; | |
109 | break; | |
03d25c5b AG |
110 | } |
111 | ||
112 | if (kvmppc_core_prepare_to_enter(vcpu)) { | |
113 | /* interrupts got enabled in between, so we | |
114 | are back at square 1 */ | |
115 | continue; | |
116 | } | |
117 | ||
3766a4c6 | 118 | kvm_guest_enter(); |
6c85f52b | 119 | return 1; |
03d25c5b AG |
120 | } |
121 | ||
6c85f52b SW |
122 | /* return to host */ |
123 | local_irq_enable(); | |
03d25c5b AG |
124 | return r; |
125 | } | |
2ba9f0d8 | 126 | EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter); |
03d25c5b | 127 | |
5deb8e7a AG |
128 | #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) |
129 | static void kvmppc_swab_shared(struct kvm_vcpu *vcpu) | |
130 | { | |
131 | struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared; | |
132 | int i; | |
133 | ||
134 | shared->sprg0 = swab64(shared->sprg0); | |
135 | shared->sprg1 = swab64(shared->sprg1); | |
136 | shared->sprg2 = swab64(shared->sprg2); | |
137 | shared->sprg3 = swab64(shared->sprg3); | |
138 | shared->srr0 = swab64(shared->srr0); | |
139 | shared->srr1 = swab64(shared->srr1); | |
140 | shared->dar = swab64(shared->dar); | |
141 | shared->msr = swab64(shared->msr); | |
142 | shared->dsisr = swab32(shared->dsisr); | |
143 | shared->int_pending = swab32(shared->int_pending); | |
144 | for (i = 0; i < ARRAY_SIZE(shared->sr); i++) | |
145 | shared->sr[i] = swab32(shared->sr[i]); | |
146 | } | |
147 | #endif | |
148 | ||
2a342ed5 AG |
149 | int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) |
150 | { | |
151 | int nr = kvmppc_get_gpr(vcpu, 11); | |
152 | int r; | |
153 | unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); | |
154 | unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); | |
155 | unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); | |
156 | unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); | |
157 | unsigned long r2 = 0; | |
158 | ||
5deb8e7a | 159 | if (!(kvmppc_get_msr(vcpu) & MSR_SF)) { |
2a342ed5 AG |
160 | /* 32 bit mode */ |
161 | param1 &= 0xffffffff; | |
162 | param2 &= 0xffffffff; | |
163 | param3 &= 0xffffffff; | |
164 | param4 &= 0xffffffff; | |
165 | } | |
166 | ||
167 | switch (nr) { | |
fdcf8bd7 | 168 | case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE): |
5fc87407 | 169 | { |
5deb8e7a AG |
170 | #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) |
171 | /* Book3S can be little endian, find it out here */ | |
172 | int shared_big_endian = true; | |
173 | if (vcpu->arch.intr_msr & MSR_LE) | |
174 | shared_big_endian = false; | |
175 | if (shared_big_endian != vcpu->arch.shared_big_endian) | |
176 | kvmppc_swab_shared(vcpu); | |
177 | vcpu->arch.shared_big_endian = shared_big_endian; | |
178 | #endif | |
179 | ||
f3383cf8 AG |
180 | if (!(param2 & MAGIC_PAGE_FLAG_NOT_MAPPED_NX)) { |
181 | /* | |
182 | * Older versions of the Linux magic page code had | |
183 | * a bug where they would map their trampoline code | |
184 | * NX. If that's the case, remove !PR NX capability. | |
185 | */ | |
186 | vcpu->arch.disable_kernel_nx = true; | |
187 | kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); | |
188 | } | |
189 | ||
190 | vcpu->arch.magic_page_pa = param1 & ~0xfffULL; | |
191 | vcpu->arch.magic_page_ea = param2 & ~0xfffULL; | |
5fc87407 | 192 | |
89b68c96 AG |
193 | #ifdef CONFIG_PPC_64K_PAGES |
194 | /* | |
195 | * Make sure our 4k magic page is in the same window of a 64k | |
196 | * page within the guest and within the host's page. | |
197 | */ | |
198 | if ((vcpu->arch.magic_page_pa & 0xf000) != | |
199 | ((ulong)vcpu->arch.shared & 0xf000)) { | |
200 | void *old_shared = vcpu->arch.shared; | |
201 | ulong shared = (ulong)vcpu->arch.shared; | |
202 | void *new_shared; | |
203 | ||
204 | shared &= PAGE_MASK; | |
205 | shared |= vcpu->arch.magic_page_pa & 0xf000; | |
206 | new_shared = (void*)shared; | |
207 | memcpy(new_shared, old_shared, 0x1000); | |
208 | vcpu->arch.shared = new_shared; | |
209 | } | |
210 | #endif | |
211 | ||
b5904972 | 212 | r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7; |
7508e16c | 213 | |
fdcf8bd7 | 214 | r = EV_SUCCESS; |
5fc87407 AG |
215 | break; |
216 | } | |
fdcf8bd7 SY |
217 | case KVM_HCALL_TOKEN(KVM_HC_FEATURES): |
218 | r = EV_SUCCESS; | |
bf7ca4bd | 219 | #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2) |
5fc87407 AG |
220 | r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); |
221 | #endif | |
2a342ed5 AG |
222 | |
223 | /* Second return value is in r4 */ | |
2a342ed5 | 224 | break; |
9202e076 LYB |
225 | case EV_HCALL_TOKEN(EV_IDLE): |
226 | r = EV_SUCCESS; | |
227 | kvm_vcpu_block(vcpu); | |
228 | clear_bit(KVM_REQ_UNHALT, &vcpu->requests); | |
229 | break; | |
2a342ed5 | 230 | default: |
fdcf8bd7 | 231 | r = EV_UNIMPLEMENTED; |
2a342ed5 AG |
232 | break; |
233 | } | |
234 | ||
7508e16c AG |
235 | kvmppc_set_gpr(vcpu, 4, r2); |
236 | ||
2a342ed5 AG |
237 | return r; |
238 | } | |
2ba9f0d8 | 239 | EXPORT_SYMBOL_GPL(kvmppc_kvm_pv); |
bbf45ba5 | 240 | |
af8f38b3 AG |
241 | int kvmppc_sanity_check(struct kvm_vcpu *vcpu) |
242 | { | |
243 | int r = false; | |
244 | ||
245 | /* We have to know what CPU to virtualize */ | |
246 | if (!vcpu->arch.pvr) | |
247 | goto out; | |
248 | ||
249 | /* PAPR only works with book3s_64 */ | |
250 | if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled) | |
251 | goto out; | |
252 | ||
af8f38b3 | 253 | /* HV KVM can only do PAPR mode for now */ |
a78b55d1 | 254 | if (!vcpu->arch.papr_enabled && is_kvmppc_hv_enabled(vcpu->kvm)) |
af8f38b3 | 255 | goto out; |
af8f38b3 | 256 | |
d30f6e48 SW |
257 | #ifdef CONFIG_KVM_BOOKE_HV |
258 | if (!cpu_has_feature(CPU_FTR_EMB_HV)) | |
259 | goto out; | |
260 | #endif | |
261 | ||
af8f38b3 AG |
262 | r = true; |
263 | ||
264 | out: | |
265 | vcpu->arch.sane = r; | |
266 | return r ? 0 : -EINVAL; | |
267 | } | |
2ba9f0d8 | 268 | EXPORT_SYMBOL_GPL(kvmppc_sanity_check); |
af8f38b3 | 269 | |
bbf45ba5 HB |
270 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) |
271 | { | |
272 | enum emulation_result er; | |
273 | int r; | |
274 | ||
275 | er = kvmppc_emulate_instruction(run, vcpu); | |
276 | switch (er) { | |
277 | case EMULATE_DONE: | |
278 | /* Future optimization: only reload non-volatiles if they were | |
279 | * actually modified. */ | |
280 | r = RESUME_GUEST_NV; | |
281 | break; | |
51f04726 MC |
282 | case EMULATE_AGAIN: |
283 | r = RESUME_GUEST; | |
284 | break; | |
bbf45ba5 HB |
285 | case EMULATE_DO_MMIO: |
286 | run->exit_reason = KVM_EXIT_MMIO; | |
287 | /* We must reload nonvolatiles because "update" load/store | |
288 | * instructions modify register state. */ | |
289 | /* Future optimization: only reload non-volatiles if they were | |
290 | * actually modified. */ | |
291 | r = RESUME_HOST_NV; | |
292 | break; | |
293 | case EMULATE_FAIL: | |
51f04726 MC |
294 | { |
295 | u32 last_inst; | |
296 | ||
297 | kvmppc_get_last_inst(vcpu, false, &last_inst); | |
bbf45ba5 | 298 | /* XXX Deliver Program interrupt to guest. */ |
51f04726 | 299 | pr_emerg("%s: emulation failed (%08x)\n", __func__, last_inst); |
bbf45ba5 HB |
300 | r = RESUME_HOST; |
301 | break; | |
51f04726 | 302 | } |
bbf45ba5 | 303 | default: |
5a33169e AG |
304 | WARN_ON(1); |
305 | r = RESUME_GUEST; | |
bbf45ba5 HB |
306 | } |
307 | ||
308 | return r; | |
309 | } | |
2ba9f0d8 | 310 | EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio); |
bbf45ba5 | 311 | |
35c4a733 AG |
312 | static hva_t kvmppc_bad_hva(void) |
313 | { | |
314 | return PAGE_OFFSET; | |
315 | } | |
316 | ||
317 | static hva_t kvmppc_pte_to_hva(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte) | |
318 | { | |
319 | hva_t hpage; | |
320 | ||
321 | hpage = gfn_to_hva(vcpu->kvm, pte->raddr >> PAGE_SHIFT); | |
322 | if (kvm_is_error_hva(hpage)) | |
323 | goto err; | |
324 | ||
325 | return hpage | (pte->raddr & ~PAGE_MASK); | |
326 | err: | |
327 | return kvmppc_bad_hva(); | |
328 | } | |
329 | ||
330 | int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, | |
331 | bool data) | |
332 | { | |
333 | struct kvmppc_pte pte; | |
334 | int r; | |
335 | ||
336 | vcpu->stat.st++; | |
337 | ||
338 | r = kvmppc_xlate(vcpu, *eaddr, data ? XLATE_DATA : XLATE_INST, | |
339 | XLATE_WRITE, &pte); | |
340 | if (r < 0) | |
341 | return r; | |
342 | ||
343 | *eaddr = pte.raddr; | |
344 | ||
345 | if (!pte.may_write) | |
346 | return -EPERM; | |
347 | ||
348 | if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size)) | |
349 | return EMULATE_DO_MMIO; | |
350 | ||
351 | return EMULATE_DONE; | |
352 | } | |
353 | EXPORT_SYMBOL_GPL(kvmppc_st); | |
354 | ||
355 | int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr, | |
356 | bool data) | |
357 | { | |
358 | struct kvmppc_pte pte; | |
359 | hva_t hva = *eaddr; | |
360 | int rc; | |
361 | ||
362 | vcpu->stat.ld++; | |
363 | ||
364 | rc = kvmppc_xlate(vcpu, *eaddr, data ? XLATE_DATA : XLATE_INST, | |
365 | XLATE_READ, &pte); | |
366 | if (rc) | |
367 | return rc; | |
368 | ||
369 | *eaddr = pte.raddr; | |
370 | ||
371 | if (!pte.may_read) | |
372 | return -EPERM; | |
373 | ||
374 | if (!data && !pte.may_execute) | |
375 | return -ENOEXEC; | |
376 | ||
377 | hva = kvmppc_pte_to_hva(vcpu, &pte); | |
378 | if (kvm_is_error_hva(hva)) | |
379 | goto mmio; | |
380 | ||
381 | if (copy_from_user(ptr, (void __user *)hva, size)) { | |
382 | printk(KERN_INFO "kvmppc_ld at 0x%lx failed\n", hva); | |
383 | goto mmio; | |
384 | } | |
385 | ||
386 | return EMULATE_DONE; | |
387 | ||
388 | mmio: | |
389 | return EMULATE_DO_MMIO; | |
390 | } | |
391 | EXPORT_SYMBOL_GPL(kvmppc_ld); | |
392 | ||
10474ae8 | 393 | int kvm_arch_hardware_enable(void *garbage) |
bbf45ba5 | 394 | { |
10474ae8 | 395 | return 0; |
bbf45ba5 HB |
396 | } |
397 | ||
398 | void kvm_arch_hardware_disable(void *garbage) | |
399 | { | |
400 | } | |
401 | ||
402 | int kvm_arch_hardware_setup(void) | |
403 | { | |
404 | return 0; | |
405 | } | |
406 | ||
407 | void kvm_arch_hardware_unsetup(void) | |
408 | { | |
409 | } | |
410 | ||
411 | void kvm_arch_check_processor_compat(void *rtn) | |
412 | { | |
9dd921cf | 413 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
bbf45ba5 HB |
414 | } |
415 | ||
e08b9637 | 416 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
bbf45ba5 | 417 | { |
cbbc58d4 AK |
418 | struct kvmppc_ops *kvm_ops = NULL; |
419 | /* | |
420 | * if we have both HV and PR enabled, default is HV | |
421 | */ | |
422 | if (type == 0) { | |
423 | if (kvmppc_hv_ops) | |
424 | kvm_ops = kvmppc_hv_ops; | |
425 | else | |
426 | kvm_ops = kvmppc_pr_ops; | |
427 | if (!kvm_ops) | |
428 | goto err_out; | |
429 | } else if (type == KVM_VM_PPC_HV) { | |
430 | if (!kvmppc_hv_ops) | |
431 | goto err_out; | |
432 | kvm_ops = kvmppc_hv_ops; | |
433 | } else if (type == KVM_VM_PPC_PR) { | |
434 | if (!kvmppc_pr_ops) | |
435 | goto err_out; | |
436 | kvm_ops = kvmppc_pr_ops; | |
437 | } else | |
438 | goto err_out; | |
439 | ||
440 | if (kvm_ops->owner && !try_module_get(kvm_ops->owner)) | |
441 | return -ENOENT; | |
442 | ||
443 | kvm->arch.kvm_ops = kvm_ops; | |
f9e0554d | 444 | return kvmppc_core_init_vm(kvm); |
cbbc58d4 AK |
445 | err_out: |
446 | return -EINVAL; | |
bbf45ba5 HB |
447 | } |
448 | ||
d89f5eff | 449 | void kvm_arch_destroy_vm(struct kvm *kvm) |
bbf45ba5 HB |
450 | { |
451 | unsigned int i; | |
988a2cae | 452 | struct kvm_vcpu *vcpu; |
bbf45ba5 | 453 | |
988a2cae GN |
454 | kvm_for_each_vcpu(i, vcpu, kvm) |
455 | kvm_arch_vcpu_free(vcpu); | |
456 | ||
457 | mutex_lock(&kvm->lock); | |
458 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) | |
459 | kvm->vcpus[i] = NULL; | |
460 | ||
461 | atomic_set(&kvm->online_vcpus, 0); | |
f9e0554d PM |
462 | |
463 | kvmppc_core_destroy_vm(kvm); | |
464 | ||
988a2cae | 465 | mutex_unlock(&kvm->lock); |
cbbc58d4 AK |
466 | |
467 | /* drop the module reference */ | |
468 | module_put(kvm->arch.kvm_ops->owner); | |
bbf45ba5 HB |
469 | } |
470 | ||
ad8ba2cd SY |
471 | void kvm_arch_sync_events(struct kvm *kvm) |
472 | { | |
473 | } | |
474 | ||
784aa3d7 | 475 | int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) |
bbf45ba5 HB |
476 | { |
477 | int r; | |
7a58777a | 478 | /* Assume we're using HV mode when the HV module is loaded */ |
cbbc58d4 | 479 | int hv_enabled = kvmppc_hv_ops ? 1 : 0; |
bbf45ba5 | 480 | |
7a58777a AG |
481 | if (kvm) { |
482 | /* | |
483 | * Hooray - we know which VM type we're running on. Depend on | |
484 | * that rather than the guess above. | |
485 | */ | |
486 | hv_enabled = is_kvmppc_hv_enabled(kvm); | |
487 | } | |
488 | ||
bbf45ba5 | 489 | switch (ext) { |
5ce941ee SW |
490 | #ifdef CONFIG_BOOKE |
491 | case KVM_CAP_PPC_BOOKE_SREGS: | |
f61c94bb | 492 | case KVM_CAP_PPC_BOOKE_WATCHDOG: |
1c810636 | 493 | case KVM_CAP_PPC_EPR: |
5ce941ee | 494 | #else |
e15a1137 | 495 | case KVM_CAP_PPC_SEGSTATE: |
1022fc3d | 496 | case KVM_CAP_PPC_HIOR: |
930b412a | 497 | case KVM_CAP_PPC_PAPR: |
5ce941ee | 498 | #endif |
18978768 | 499 | case KVM_CAP_PPC_UNSET_IRQ: |
7b4203e8 | 500 | case KVM_CAP_PPC_IRQ_LEVEL: |
71fbfd5f | 501 | case KVM_CAP_ENABLE_CAP: |
699a0ea0 | 502 | case KVM_CAP_ENABLE_CAP_VM: |
e24ed81f | 503 | case KVM_CAP_ONE_REG: |
0e673fb6 | 504 | case KVM_CAP_IOEVENTFD: |
5df554ad | 505 | case KVM_CAP_DEVICE_CTRL: |
de56a948 PM |
506 | r = 1; |
507 | break; | |
de56a948 | 508 | case KVM_CAP_PPC_PAIRED_SINGLES: |
ad0a048b | 509 | case KVM_CAP_PPC_OSI: |
15711e9c | 510 | case KVM_CAP_PPC_GET_PVINFO: |
bf7ca4bd | 511 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc | 512 | case KVM_CAP_SW_TLB: |
eb1e4f43 | 513 | #endif |
699cc876 | 514 | /* We support this only for PR */ |
cbbc58d4 | 515 | r = !hv_enabled; |
e15a1137 | 516 | break; |
699cc876 | 517 | #ifdef CONFIG_KVM_MMIO |
588968b6 LV |
518 | case KVM_CAP_COALESCED_MMIO: |
519 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
520 | break; | |
54738c09 | 521 | #endif |
699cc876 AK |
522 | #ifdef CONFIG_KVM_MPIC |
523 | case KVM_CAP_IRQ_MPIC: | |
524 | r = 1; | |
525 | break; | |
526 | #endif | |
527 | ||
f31e65e1 | 528 | #ifdef CONFIG_PPC_BOOK3S_64 |
54738c09 | 529 | case KVM_CAP_SPAPR_TCE: |
32fad281 | 530 | case KVM_CAP_PPC_ALLOC_HTAB: |
8e591cb7 | 531 | case KVM_CAP_PPC_RTAS: |
f2e91042 | 532 | case KVM_CAP_PPC_FIXUP_HCALL: |
699a0ea0 | 533 | case KVM_CAP_PPC_ENABLE_HCALL: |
5975a2e0 PM |
534 | #ifdef CONFIG_KVM_XICS |
535 | case KVM_CAP_IRQ_XICS: | |
536 | #endif | |
54738c09 DG |
537 | r = 1; |
538 | break; | |
f31e65e1 | 539 | #endif /* CONFIG_PPC_BOOK3S_64 */ |
699cc876 | 540 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE |
371fefd6 | 541 | case KVM_CAP_PPC_SMT: |
cbbc58d4 | 542 | if (hv_enabled) |
3102f784 | 543 | r = threads_per_subcore; |
699cc876 AK |
544 | else |
545 | r = 0; | |
371fefd6 | 546 | break; |
aa04b4cc | 547 | case KVM_CAP_PPC_RMA: |
cbbc58d4 | 548 | r = hv_enabled; |
9e368f29 | 549 | /* PPC970 requires an RMA */ |
699cc876 | 550 | if (r && cpu_has_feature(CPU_FTR_ARCH_201)) |
9e368f29 | 551 | r = 2; |
aa04b4cc | 552 | break; |
f4800b1f | 553 | #endif |
342d3db7 | 554 | case KVM_CAP_SYNC_MMU: |
699cc876 | 555 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE |
cbbc58d4 | 556 | if (hv_enabled) |
699cc876 AK |
557 | r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0; |
558 | else | |
559 | r = 0; | |
f4800b1f AG |
560 | #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
561 | r = 1; | |
562 | #else | |
563 | r = 0; | |
a2932923 | 564 | #endif |
699cc876 AK |
565 | break; |
566 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE | |
a2932923 | 567 | case KVM_CAP_PPC_HTAB_FD: |
cbbc58d4 | 568 | r = hv_enabled; |
a2932923 | 569 | break; |
de56a948 | 570 | #endif |
b5434032 ME |
571 | case KVM_CAP_NR_VCPUS: |
572 | /* | |
573 | * Recommending a number of CPUs is somewhat arbitrary; we | |
574 | * return the number of present CPUs for -HV (since a host | |
575 | * will have secondary threads "offline"), and for other KVM | |
576 | * implementations just count online CPUs. | |
577 | */ | |
cbbc58d4 | 578 | if (hv_enabled) |
699cc876 AK |
579 | r = num_present_cpus(); |
580 | else | |
581 | r = num_online_cpus(); | |
b5434032 ME |
582 | break; |
583 | case KVM_CAP_MAX_VCPUS: | |
584 | r = KVM_MAX_VCPUS; | |
585 | break; | |
5b74716e BH |
586 | #ifdef CONFIG_PPC_BOOK3S_64 |
587 | case KVM_CAP_PPC_GET_SMMU_INFO: | |
588 | r = 1; | |
589 | break; | |
590 | #endif | |
bbf45ba5 HB |
591 | default: |
592 | r = 0; | |
593 | break; | |
594 | } | |
595 | return r; | |
596 | ||
597 | } | |
598 | ||
599 | long kvm_arch_dev_ioctl(struct file *filp, | |
600 | unsigned int ioctl, unsigned long arg) | |
601 | { | |
602 | return -EINVAL; | |
603 | } | |
604 | ||
5587027c | 605 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
db3fe4eb TY |
606 | struct kvm_memory_slot *dont) |
607 | { | |
5587027c | 608 | kvmppc_core_free_memslot(kvm, free, dont); |
db3fe4eb TY |
609 | } |
610 | ||
5587027c AK |
611 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
612 | unsigned long npages) | |
db3fe4eb | 613 | { |
5587027c | 614 | return kvmppc_core_create_memslot(kvm, slot, npages); |
db3fe4eb TY |
615 | } |
616 | ||
e59dbe09 TY |
617 | void kvm_arch_memslots_updated(struct kvm *kvm) |
618 | { | |
619 | } | |
620 | ||
f7784b8e | 621 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
462fce46 | 622 | struct kvm_memory_slot *memslot, |
7b6195a9 TY |
623 | struct kvm_userspace_memory_region *mem, |
624 | enum kvm_mr_change change) | |
bbf45ba5 | 625 | { |
a66b48c3 | 626 | return kvmppc_core_prepare_memory_region(kvm, memslot, mem); |
bbf45ba5 HB |
627 | } |
628 | ||
f7784b8e | 629 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
462fce46 | 630 | struct kvm_userspace_memory_region *mem, |
8482644a TY |
631 | const struct kvm_memory_slot *old, |
632 | enum kvm_mr_change change) | |
f7784b8e | 633 | { |
dfe49dbd | 634 | kvmppc_core_commit_memory_region(kvm, mem, old); |
f7784b8e MT |
635 | } |
636 | ||
2df72e9b MT |
637 | void kvm_arch_flush_shadow_all(struct kvm *kvm) |
638 | { | |
639 | } | |
f7784b8e | 640 | |
2df72e9b MT |
641 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, |
642 | struct kvm_memory_slot *slot) | |
34d4cb8f | 643 | { |
dfe49dbd | 644 | kvmppc_core_flush_memslot(kvm, slot); |
34d4cb8f MT |
645 | } |
646 | ||
bbf45ba5 HB |
647 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
648 | { | |
73e75b41 HB |
649 | struct kvm_vcpu *vcpu; |
650 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
03cdab53 ME |
651 | if (!IS_ERR(vcpu)) { |
652 | vcpu->arch.wqp = &vcpu->wq; | |
06056bfb | 653 | kvmppc_create_vcpu_debugfs(vcpu, id); |
03cdab53 | 654 | } |
73e75b41 | 655 | return vcpu; |
bbf45ba5 HB |
656 | } |
657 | ||
42897d86 MT |
658 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) |
659 | { | |
660 | return 0; | |
661 | } | |
662 | ||
bbf45ba5 HB |
663 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) |
664 | { | |
a595405d AG |
665 | /* Make sure we're not using the vcpu anymore */ |
666 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
667 | tasklet_kill(&vcpu->arch.tasklet); | |
668 | ||
73e75b41 | 669 | kvmppc_remove_vcpu_debugfs(vcpu); |
eb1e4f43 SW |
670 | |
671 | switch (vcpu->arch.irq_type) { | |
672 | case KVMPPC_IRQ_MPIC: | |
673 | kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu); | |
674 | break; | |
bc5ad3f3 BH |
675 | case KVMPPC_IRQ_XICS: |
676 | kvmppc_xics_free_icp(vcpu); | |
677 | break; | |
eb1e4f43 SW |
678 | } |
679 | ||
db93f574 | 680 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
681 | } |
682 | ||
683 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
684 | { | |
685 | kvm_arch_vcpu_free(vcpu); | |
686 | } | |
687 | ||
688 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
689 | { | |
9dd921cf | 690 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
691 | } |
692 | ||
544c6761 AG |
693 | /* |
694 | * low level hrtimer wake routine. Because this runs in hardirq context | |
695 | * we schedule a tasklet to do the real work. | |
696 | */ | |
697 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
698 | { | |
699 | struct kvm_vcpu *vcpu; | |
700 | ||
701 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
702 | tasklet_schedule(&vcpu->arch.tasklet); | |
703 | ||
704 | return HRTIMER_NORESTART; | |
705 | } | |
706 | ||
bbf45ba5 HB |
707 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
708 | { | |
f61c94bb BB |
709 | int ret; |
710 | ||
544c6761 AG |
711 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
712 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
713 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 714 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 715 | |
09000adb BB |
716 | #ifdef CONFIG_KVM_EXIT_TIMING |
717 | mutex_init(&vcpu->arch.exit_timing_lock); | |
718 | #endif | |
f61c94bb BB |
719 | ret = kvmppc_subarch_vcpu_init(vcpu); |
720 | return ret; | |
bbf45ba5 HB |
721 | } |
722 | ||
723 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
724 | { | |
ecc0981f | 725 | kvmppc_mmu_destroy(vcpu); |
f61c94bb | 726 | kvmppc_subarch_vcpu_uninit(vcpu); |
bbf45ba5 HB |
727 | } |
728 | ||
729 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
730 | { | |
eab17672 SW |
731 | #ifdef CONFIG_BOOKE |
732 | /* | |
733 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
734 | * be used by the guest. | |
735 | * | |
736 | * On non-booke this is associated with Altivec and | |
737 | * is handled by code in book3s.c. | |
738 | */ | |
739 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
740 | #endif | |
9dd921cf | 741 | kvmppc_core_vcpu_load(vcpu, cpu); |
bbf45ba5 HB |
742 | } |
743 | ||
744 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
745 | { | |
9dd921cf | 746 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
747 | #ifdef CONFIG_BOOKE |
748 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
749 | #endif | |
bbf45ba5 HB |
750 | } |
751 | ||
bbf45ba5 HB |
752 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, |
753 | struct kvm_run *run) | |
754 | { | |
8e5b26b5 | 755 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
756 | } |
757 | ||
758 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
759 | struct kvm_run *run) | |
760 | { | |
69b61833 | 761 | u64 uninitialized_var(gpr); |
bbf45ba5 | 762 | |
8e5b26b5 | 763 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
764 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
765 | return; | |
766 | } | |
767 | ||
768 | if (vcpu->arch.mmio_is_bigendian) { | |
769 | switch (run->mmio.len) { | |
b104d066 | 770 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
771 | case 4: gpr = *(u32 *)run->mmio.data; break; |
772 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
773 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
774 | } |
775 | } else { | |
776 | /* Convert BE data from userland back to LE. */ | |
777 | switch (run->mmio.len) { | |
8e5b26b5 AG |
778 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
779 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
780 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
781 | } |
782 | } | |
8e5b26b5 | 783 | |
3587d534 AG |
784 | if (vcpu->arch.mmio_sign_extend) { |
785 | switch (run->mmio.len) { | |
786 | #ifdef CONFIG_PPC64 | |
787 | case 4: | |
788 | gpr = (s64)(s32)gpr; | |
789 | break; | |
790 | #endif | |
791 | case 2: | |
792 | gpr = (s64)(s16)gpr; | |
793 | break; | |
794 | case 1: | |
795 | gpr = (s64)(s8)gpr; | |
796 | break; | |
797 | } | |
798 | } | |
799 | ||
8e5b26b5 | 800 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 | 801 | |
b3c5d3c2 AG |
802 | switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) { |
803 | case KVM_MMIO_REG_GPR: | |
b104d066 AG |
804 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
805 | break; | |
b3c5d3c2 | 806 | case KVM_MMIO_REG_FPR: |
efff1912 | 807 | VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr; |
b104d066 | 808 | break; |
287d5611 | 809 | #ifdef CONFIG_PPC_BOOK3S |
b3c5d3c2 AG |
810 | case KVM_MMIO_REG_QPR: |
811 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 812 | break; |
b3c5d3c2 | 813 | case KVM_MMIO_REG_FQPR: |
efff1912 | 814 | VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr; |
b3c5d3c2 | 815 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; |
b104d066 | 816 | break; |
287d5611 | 817 | #endif |
b104d066 AG |
818 | default: |
819 | BUG(); | |
820 | } | |
bbf45ba5 HB |
821 | } |
822 | ||
823 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
73601775 CLG |
824 | unsigned int rt, unsigned int bytes, |
825 | int is_default_endian) | |
bbf45ba5 | 826 | { |
ed840ee9 | 827 | int idx, ret; |
73601775 CLG |
828 | int is_bigendian; |
829 | ||
830 | if (kvmppc_need_byteswap(vcpu)) { | |
831 | /* Default endianness is "little endian". */ | |
832 | is_bigendian = !is_default_endian; | |
833 | } else { | |
834 | /* Default endianness is "big endian". */ | |
835 | is_bigendian = is_default_endian; | |
836 | } | |
ed840ee9 | 837 | |
bbf45ba5 HB |
838 | if (bytes > sizeof(run->mmio.data)) { |
839 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
840 | run->mmio.len); | |
841 | } | |
842 | ||
843 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
844 | run->mmio.len = bytes; | |
845 | run->mmio.is_write = 0; | |
846 | ||
847 | vcpu->arch.io_gpr = rt; | |
848 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
849 | vcpu->mmio_needed = 1; | |
850 | vcpu->mmio_is_write = 0; | |
3587d534 | 851 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 | 852 | |
ed840ee9 SW |
853 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
854 | ||
855 | ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, | |
856 | bytes, &run->mmio.data); | |
857 | ||
858 | srcu_read_unlock(&vcpu->kvm->srcu, idx); | |
859 | ||
860 | if (!ret) { | |
0e673fb6 AG |
861 | kvmppc_complete_mmio_load(vcpu, run); |
862 | vcpu->mmio_needed = 0; | |
863 | return EMULATE_DONE; | |
864 | } | |
865 | ||
bbf45ba5 HB |
866 | return EMULATE_DO_MMIO; |
867 | } | |
2ba9f0d8 | 868 | EXPORT_SYMBOL_GPL(kvmppc_handle_load); |
bbf45ba5 | 869 | |
3587d534 AG |
870 | /* Same as above, but sign extends */ |
871 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
73601775 CLG |
872 | unsigned int rt, unsigned int bytes, |
873 | int is_default_endian) | |
3587d534 AG |
874 | { |
875 | int r; | |
876 | ||
3587d534 | 877 | vcpu->arch.mmio_sign_extend = 1; |
73601775 | 878 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_default_endian); |
3587d534 AG |
879 | |
880 | return r; | |
881 | } | |
882 | ||
bbf45ba5 | 883 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
73601775 | 884 | u64 val, unsigned int bytes, int is_default_endian) |
bbf45ba5 HB |
885 | { |
886 | void *data = run->mmio.data; | |
ed840ee9 | 887 | int idx, ret; |
73601775 CLG |
888 | int is_bigendian; |
889 | ||
890 | if (kvmppc_need_byteswap(vcpu)) { | |
891 | /* Default endianness is "little endian". */ | |
892 | is_bigendian = !is_default_endian; | |
893 | } else { | |
894 | /* Default endianness is "big endian". */ | |
895 | is_bigendian = is_default_endian; | |
896 | } | |
bbf45ba5 HB |
897 | |
898 | if (bytes > sizeof(run->mmio.data)) { | |
899 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
900 | run->mmio.len); | |
901 | } | |
902 | ||
903 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
904 | run->mmio.len = bytes; | |
905 | run->mmio.is_write = 1; | |
906 | vcpu->mmio_needed = 1; | |
907 | vcpu->mmio_is_write = 1; | |
908 | ||
909 | /* Store the value at the lowest bytes in 'data'. */ | |
910 | if (is_bigendian) { | |
911 | switch (bytes) { | |
b104d066 | 912 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
913 | case 4: *(u32 *)data = val; break; |
914 | case 2: *(u16 *)data = val; break; | |
915 | case 1: *(u8 *)data = val; break; | |
916 | } | |
917 | } else { | |
918 | /* Store LE value into 'data'. */ | |
919 | switch (bytes) { | |
920 | case 4: st_le32(data, val); break; | |
921 | case 2: st_le16(data, val); break; | |
922 | case 1: *(u8 *)data = val; break; | |
923 | } | |
924 | } | |
925 | ||
ed840ee9 SW |
926 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
927 | ||
928 | ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, | |
929 | bytes, &run->mmio.data); | |
930 | ||
931 | srcu_read_unlock(&vcpu->kvm->srcu, idx); | |
932 | ||
933 | if (!ret) { | |
0e673fb6 AG |
934 | vcpu->mmio_needed = 0; |
935 | return EMULATE_DONE; | |
936 | } | |
937 | ||
bbf45ba5 HB |
938 | return EMULATE_DO_MMIO; |
939 | } | |
2ba9f0d8 | 940 | EXPORT_SYMBOL_GPL(kvmppc_handle_store); |
bbf45ba5 HB |
941 | |
942 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
943 | { | |
944 | int r; | |
945 | sigset_t sigsaved; | |
946 | ||
947 | if (vcpu->sigset_active) | |
948 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
949 | ||
950 | if (vcpu->mmio_needed) { | |
951 | if (!vcpu->mmio_is_write) | |
952 | kvmppc_complete_mmio_load(vcpu, run); | |
953 | vcpu->mmio_needed = 0; | |
954 | } else if (vcpu->arch.dcr_needed) { | |
955 | if (!vcpu->arch.dcr_is_write) | |
956 | kvmppc_complete_dcr_load(vcpu, run); | |
957 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
958 | } else if (vcpu->arch.osi_needed) { |
959 | u64 *gprs = run->osi.gprs; | |
960 | int i; | |
961 | ||
962 | for (i = 0; i < 32; i++) | |
963 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
964 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
965 | } else if (vcpu->arch.hcall_needed) { |
966 | int i; | |
967 | ||
968 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
969 | for (i = 0; i < 9; ++i) | |
970 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
971 | vcpu->arch.hcall_needed = 0; | |
1c810636 AG |
972 | #ifdef CONFIG_BOOKE |
973 | } else if (vcpu->arch.epr_needed) { | |
974 | kvmppc_set_epr(vcpu, run->epr.epr); | |
975 | vcpu->arch.epr_needed = 0; | |
976 | #endif | |
bbf45ba5 HB |
977 | } |
978 | ||
df6909e5 | 979 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
980 | |
981 | if (vcpu->sigset_active) | |
982 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
983 | ||
984 | return r; | |
985 | } | |
986 | ||
987 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
988 | { | |
19ccb76a | 989 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
4fe27d2a | 990 | kvmppc_core_dequeue_external(vcpu); |
19ccb76a PM |
991 | return 0; |
992 | } | |
993 | ||
994 | kvmppc_core_queue_external(vcpu, irq); | |
b6d33834 | 995 | |
dfd4d47e | 996 | kvm_vcpu_kick(vcpu); |
45c5eb67 | 997 | |
bbf45ba5 HB |
998 | return 0; |
999 | } | |
1000 | ||
71fbfd5f AG |
1001 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
1002 | struct kvm_enable_cap *cap) | |
1003 | { | |
1004 | int r; | |
1005 | ||
1006 | if (cap->flags) | |
1007 | return -EINVAL; | |
1008 | ||
1009 | switch (cap->cap) { | |
ad0a048b AG |
1010 | case KVM_CAP_PPC_OSI: |
1011 | r = 0; | |
1012 | vcpu->arch.osi_enabled = true; | |
1013 | break; | |
930b412a AG |
1014 | case KVM_CAP_PPC_PAPR: |
1015 | r = 0; | |
1016 | vcpu->arch.papr_enabled = true; | |
1017 | break; | |
1c810636 AG |
1018 | case KVM_CAP_PPC_EPR: |
1019 | r = 0; | |
5df554ad SW |
1020 | if (cap->args[0]) |
1021 | vcpu->arch.epr_flags |= KVMPPC_EPR_USER; | |
1022 | else | |
1023 | vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER; | |
1c810636 | 1024 | break; |
f61c94bb BB |
1025 | #ifdef CONFIG_BOOKE |
1026 | case KVM_CAP_PPC_BOOKE_WATCHDOG: | |
1027 | r = 0; | |
1028 | vcpu->arch.watchdog_enabled = true; | |
1029 | break; | |
1030 | #endif | |
bf7ca4bd | 1031 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
1032 | case KVM_CAP_SW_TLB: { |
1033 | struct kvm_config_tlb cfg; | |
1034 | void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; | |
1035 | ||
1036 | r = -EFAULT; | |
1037 | if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) | |
1038 | break; | |
1039 | ||
1040 | r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); | |
1041 | break; | |
eb1e4f43 SW |
1042 | } |
1043 | #endif | |
1044 | #ifdef CONFIG_KVM_MPIC | |
1045 | case KVM_CAP_IRQ_MPIC: { | |
70abaded | 1046 | struct fd f; |
eb1e4f43 SW |
1047 | struct kvm_device *dev; |
1048 | ||
1049 | r = -EBADF; | |
70abaded AV |
1050 | f = fdget(cap->args[0]); |
1051 | if (!f.file) | |
eb1e4f43 SW |
1052 | break; |
1053 | ||
1054 | r = -EPERM; | |
70abaded | 1055 | dev = kvm_device_from_filp(f.file); |
eb1e4f43 SW |
1056 | if (dev) |
1057 | r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]); | |
1058 | ||
70abaded | 1059 | fdput(f); |
eb1e4f43 | 1060 | break; |
dc83b8bc SW |
1061 | } |
1062 | #endif | |
5975a2e0 PM |
1063 | #ifdef CONFIG_KVM_XICS |
1064 | case KVM_CAP_IRQ_XICS: { | |
70abaded | 1065 | struct fd f; |
5975a2e0 PM |
1066 | struct kvm_device *dev; |
1067 | ||
1068 | r = -EBADF; | |
70abaded AV |
1069 | f = fdget(cap->args[0]); |
1070 | if (!f.file) | |
5975a2e0 PM |
1071 | break; |
1072 | ||
1073 | r = -EPERM; | |
70abaded | 1074 | dev = kvm_device_from_filp(f.file); |
5975a2e0 PM |
1075 | if (dev) |
1076 | r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]); | |
1077 | ||
70abaded | 1078 | fdput(f); |
5975a2e0 PM |
1079 | break; |
1080 | } | |
1081 | #endif /* CONFIG_KVM_XICS */ | |
71fbfd5f AG |
1082 | default: |
1083 | r = -EINVAL; | |
1084 | break; | |
1085 | } | |
1086 | ||
af8f38b3 AG |
1087 | if (!r) |
1088 | r = kvmppc_sanity_check(vcpu); | |
1089 | ||
71fbfd5f AG |
1090 | return r; |
1091 | } | |
1092 | ||
bbf45ba5 HB |
1093 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
1094 | struct kvm_mp_state *mp_state) | |
1095 | { | |
1096 | return -EINVAL; | |
1097 | } | |
1098 | ||
1099 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
1100 | struct kvm_mp_state *mp_state) | |
1101 | { | |
1102 | return -EINVAL; | |
1103 | } | |
1104 | ||
1105 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
1106 | unsigned int ioctl, unsigned long arg) | |
1107 | { | |
1108 | struct kvm_vcpu *vcpu = filp->private_data; | |
1109 | void __user *argp = (void __user *)arg; | |
1110 | long r; | |
1111 | ||
93736624 AK |
1112 | switch (ioctl) { |
1113 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
1114 | struct kvm_interrupt irq; |
1115 | r = -EFAULT; | |
1116 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 1117 | goto out; |
bbf45ba5 | 1118 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 1119 | goto out; |
bbf45ba5 | 1120 | } |
19483d14 | 1121 | |
71fbfd5f AG |
1122 | case KVM_ENABLE_CAP: |
1123 | { | |
1124 | struct kvm_enable_cap cap; | |
1125 | r = -EFAULT; | |
1126 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
1127 | goto out; | |
1128 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
1129 | break; | |
1130 | } | |
dc83b8bc | 1131 | |
e24ed81f AG |
1132 | case KVM_SET_ONE_REG: |
1133 | case KVM_GET_ONE_REG: | |
1134 | { | |
1135 | struct kvm_one_reg reg; | |
1136 | r = -EFAULT; | |
1137 | if (copy_from_user(®, argp, sizeof(reg))) | |
1138 | goto out; | |
1139 | if (ioctl == KVM_SET_ONE_REG) | |
1140 | r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); | |
1141 | else | |
1142 | r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); | |
1143 | break; | |
1144 | } | |
1145 | ||
bf7ca4bd | 1146 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
1147 | case KVM_DIRTY_TLB: { |
1148 | struct kvm_dirty_tlb dirty; | |
1149 | r = -EFAULT; | |
1150 | if (copy_from_user(&dirty, argp, sizeof(dirty))) | |
1151 | goto out; | |
1152 | r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); | |
1153 | break; | |
1154 | } | |
1155 | #endif | |
bbf45ba5 HB |
1156 | default: |
1157 | r = -EINVAL; | |
1158 | } | |
1159 | ||
1160 | out: | |
1161 | return r; | |
1162 | } | |
1163 | ||
5b1c1493 CO |
1164 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
1165 | { | |
1166 | return VM_FAULT_SIGBUS; | |
1167 | } | |
1168 | ||
15711e9c AG |
1169 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
1170 | { | |
784bafac SY |
1171 | u32 inst_nop = 0x60000000; |
1172 | #ifdef CONFIG_KVM_BOOKE_HV | |
1173 | u32 inst_sc1 = 0x44000022; | |
2743103f AG |
1174 | pvinfo->hcall[0] = cpu_to_be32(inst_sc1); |
1175 | pvinfo->hcall[1] = cpu_to_be32(inst_nop); | |
1176 | pvinfo->hcall[2] = cpu_to_be32(inst_nop); | |
1177 | pvinfo->hcall[3] = cpu_to_be32(inst_nop); | |
784bafac | 1178 | #else |
15711e9c AG |
1179 | u32 inst_lis = 0x3c000000; |
1180 | u32 inst_ori = 0x60000000; | |
15711e9c AG |
1181 | u32 inst_sc = 0x44000002; |
1182 | u32 inst_imm_mask = 0xffff; | |
1183 | ||
1184 | /* | |
1185 | * The hypercall to get into KVM from within guest context is as | |
1186 | * follows: | |
1187 | * | |
1188 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
1189 | * ori r0, KVM_SC_MAGIC_R0@l | |
1190 | * sc | |
1191 | * nop | |
1192 | */ | |
2743103f AG |
1193 | pvinfo->hcall[0] = cpu_to_be32(inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask)); |
1194 | pvinfo->hcall[1] = cpu_to_be32(inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask)); | |
1195 | pvinfo->hcall[2] = cpu_to_be32(inst_sc); | |
1196 | pvinfo->hcall[3] = cpu_to_be32(inst_nop); | |
784bafac | 1197 | #endif |
15711e9c | 1198 | |
9202e076 LYB |
1199 | pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE; |
1200 | ||
15711e9c AG |
1201 | return 0; |
1202 | } | |
1203 | ||
5efdb4be AG |
1204 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event, |
1205 | bool line_status) | |
1206 | { | |
1207 | if (!irqchip_in_kernel(kvm)) | |
1208 | return -ENXIO; | |
1209 | ||
1210 | irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, | |
1211 | irq_event->irq, irq_event->level, | |
1212 | line_status); | |
1213 | return 0; | |
1214 | } | |
1215 | ||
699a0ea0 PM |
1216 | |
1217 | static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, | |
1218 | struct kvm_enable_cap *cap) | |
1219 | { | |
1220 | int r; | |
1221 | ||
1222 | if (cap->flags) | |
1223 | return -EINVAL; | |
1224 | ||
1225 | switch (cap->cap) { | |
1226 | #ifdef CONFIG_KVM_BOOK3S_64_HANDLER | |
1227 | case KVM_CAP_PPC_ENABLE_HCALL: { | |
1228 | unsigned long hcall = cap->args[0]; | |
1229 | ||
1230 | r = -EINVAL; | |
1231 | if (hcall > MAX_HCALL_OPCODE || (hcall & 3) || | |
1232 | cap->args[1] > 1) | |
1233 | break; | |
ae2113a4 PM |
1234 | if (!kvmppc_book3s_hcall_implemented(kvm, hcall)) |
1235 | break; | |
699a0ea0 PM |
1236 | if (cap->args[1]) |
1237 | set_bit(hcall / 4, kvm->arch.enabled_hcalls); | |
1238 | else | |
1239 | clear_bit(hcall / 4, kvm->arch.enabled_hcalls); | |
1240 | r = 0; | |
1241 | break; | |
1242 | } | |
1243 | #endif | |
1244 | default: | |
1245 | r = -EINVAL; | |
1246 | break; | |
1247 | } | |
1248 | ||
1249 | return r; | |
1250 | } | |
1251 | ||
bbf45ba5 HB |
1252 | long kvm_arch_vm_ioctl(struct file *filp, |
1253 | unsigned int ioctl, unsigned long arg) | |
1254 | { | |
5df554ad | 1255 | struct kvm *kvm __maybe_unused = filp->private_data; |
15711e9c | 1256 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
1257 | long r; |
1258 | ||
1259 | switch (ioctl) { | |
15711e9c AG |
1260 | case KVM_PPC_GET_PVINFO: { |
1261 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 1262 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
1263 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
1264 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
1265 | r = -EFAULT; | |
1266 | goto out; | |
1267 | } | |
1268 | ||
1269 | break; | |
1270 | } | |
699a0ea0 PM |
1271 | case KVM_ENABLE_CAP: |
1272 | { | |
1273 | struct kvm_enable_cap cap; | |
1274 | r = -EFAULT; | |
1275 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
1276 | goto out; | |
1277 | r = kvm_vm_ioctl_enable_cap(kvm, &cap); | |
1278 | break; | |
1279 | } | |
f31e65e1 | 1280 | #ifdef CONFIG_PPC_BOOK3S_64 |
54738c09 DG |
1281 | case KVM_CREATE_SPAPR_TCE: { |
1282 | struct kvm_create_spapr_tce create_tce; | |
54738c09 DG |
1283 | |
1284 | r = -EFAULT; | |
1285 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
1286 | goto out; | |
1287 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
1288 | goto out; | |
1289 | } | |
5b74716e | 1290 | case KVM_PPC_GET_SMMU_INFO: { |
5b74716e | 1291 | struct kvm_ppc_smmu_info info; |
cbbc58d4 | 1292 | struct kvm *kvm = filp->private_data; |
5b74716e BH |
1293 | |
1294 | memset(&info, 0, sizeof(info)); | |
cbbc58d4 | 1295 | r = kvm->arch.kvm_ops->get_smmu_info(kvm, &info); |
5b74716e BH |
1296 | if (r >= 0 && copy_to_user(argp, &info, sizeof(info))) |
1297 | r = -EFAULT; | |
1298 | break; | |
1299 | } | |
8e591cb7 ME |
1300 | case KVM_PPC_RTAS_DEFINE_TOKEN: { |
1301 | struct kvm *kvm = filp->private_data; | |
1302 | ||
1303 | r = kvm_vm_ioctl_rtas_define_token(kvm, argp); | |
1304 | break; | |
1305 | } | |
cbbc58d4 AK |
1306 | default: { |
1307 | struct kvm *kvm = filp->private_data; | |
1308 | r = kvm->arch.kvm_ops->arch_vm_ioctl(filp, ioctl, arg); | |
1309 | } | |
3a167bea | 1310 | #else /* CONFIG_PPC_BOOK3S_64 */ |
bbf45ba5 | 1311 | default: |
367e1319 | 1312 | r = -ENOTTY; |
3a167bea | 1313 | #endif |
bbf45ba5 | 1314 | } |
15711e9c | 1315 | out: |
bbf45ba5 HB |
1316 | return r; |
1317 | } | |
1318 | ||
043cc4d7 SW |
1319 | static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)]; |
1320 | static unsigned long nr_lpids; | |
1321 | ||
1322 | long kvmppc_alloc_lpid(void) | |
1323 | { | |
1324 | long lpid; | |
1325 | ||
1326 | do { | |
1327 | lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS); | |
1328 | if (lpid >= nr_lpids) { | |
1329 | pr_err("%s: No LPIDs free\n", __func__); | |
1330 | return -ENOMEM; | |
1331 | } | |
1332 | } while (test_and_set_bit(lpid, lpid_inuse)); | |
1333 | ||
1334 | return lpid; | |
1335 | } | |
2ba9f0d8 | 1336 | EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid); |
043cc4d7 SW |
1337 | |
1338 | void kvmppc_claim_lpid(long lpid) | |
1339 | { | |
1340 | set_bit(lpid, lpid_inuse); | |
1341 | } | |
2ba9f0d8 | 1342 | EXPORT_SYMBOL_GPL(kvmppc_claim_lpid); |
043cc4d7 SW |
1343 | |
1344 | void kvmppc_free_lpid(long lpid) | |
1345 | { | |
1346 | clear_bit(lpid, lpid_inuse); | |
1347 | } | |
2ba9f0d8 | 1348 | EXPORT_SYMBOL_GPL(kvmppc_free_lpid); |
043cc4d7 SW |
1349 | |
1350 | void kvmppc_init_lpid(unsigned long nr_lpids_param) | |
1351 | { | |
1352 | nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param); | |
1353 | memset(lpid_inuse, 0, sizeof(lpid_inuse)); | |
1354 | } | |
2ba9f0d8 | 1355 | EXPORT_SYMBOL_GPL(kvmppc_init_lpid); |
043cc4d7 | 1356 | |
bbf45ba5 HB |
1357 | int kvm_arch_init(void *opaque) |
1358 | { | |
1359 | return 0; | |
1360 | } | |
1361 | ||
1362 | void kvm_arch_exit(void) | |
1363 | { | |
cbbc58d4 | 1364 | |
bbf45ba5 | 1365 | } |