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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> |
bbf45ba5 HB |
28 | #include <asm/cputable.h> |
29 | #include <asm/uaccess.h> | |
30 | #include <asm/kvm_ppc.h> | |
83aae4a8 | 31 | #include <asm/tlbflush.h> |
371fefd6 | 32 | #include <asm/cputhreads.h> |
73e75b41 | 33 | #include "timing.h" |
fad7b9b5 | 34 | #include "../mm/mmu_decl.h" |
bbf45ba5 | 35 | |
46f43c6e MT |
36 | #define CREATE_TRACE_POINTS |
37 | #include "trace.h" | |
38 | ||
bbf45ba5 HB |
39 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) |
40 | { | |
666e7252 AG |
41 | return !(v->arch.shared->msr & MSR_WE) || |
42 | !!(v->arch.pending_exceptions); | |
bbf45ba5 HB |
43 | } |
44 | ||
2a342ed5 AG |
45 | int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) |
46 | { | |
47 | int nr = kvmppc_get_gpr(vcpu, 11); | |
48 | int r; | |
49 | unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); | |
50 | unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); | |
51 | unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); | |
52 | unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); | |
53 | unsigned long r2 = 0; | |
54 | ||
55 | if (!(vcpu->arch.shared->msr & MSR_SF)) { | |
56 | /* 32 bit mode */ | |
57 | param1 &= 0xffffffff; | |
58 | param2 &= 0xffffffff; | |
59 | param3 &= 0xffffffff; | |
60 | param4 &= 0xffffffff; | |
61 | } | |
62 | ||
63 | switch (nr) { | |
5fc87407 AG |
64 | case HC_VENDOR_KVM | KVM_HC_PPC_MAP_MAGIC_PAGE: |
65 | { | |
66 | vcpu->arch.magic_page_pa = param1; | |
67 | vcpu->arch.magic_page_ea = param2; | |
68 | ||
df1bfa25 | 69 | r2 = KVM_MAGIC_FEAT_SR; |
7508e16c | 70 | |
5fc87407 AG |
71 | r = HC_EV_SUCCESS; |
72 | break; | |
73 | } | |
2a342ed5 AG |
74 | case HC_VENDOR_KVM | KVM_HC_FEATURES: |
75 | r = HC_EV_SUCCESS; | |
a4cd8b23 SW |
76 | #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500) |
77 | /* XXX Missing magic page on 44x */ | |
5fc87407 AG |
78 | r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); |
79 | #endif | |
2a342ed5 AG |
80 | |
81 | /* Second return value is in r4 */ | |
2a342ed5 AG |
82 | break; |
83 | default: | |
84 | r = HC_EV_UNIMPLEMENTED; | |
85 | break; | |
86 | } | |
87 | ||
7508e16c AG |
88 | kvmppc_set_gpr(vcpu, 4, r2); |
89 | ||
2a342ed5 AG |
90 | return r; |
91 | } | |
bbf45ba5 | 92 | |
af8f38b3 AG |
93 | int kvmppc_sanity_check(struct kvm_vcpu *vcpu) |
94 | { | |
95 | int r = false; | |
96 | ||
97 | /* We have to know what CPU to virtualize */ | |
98 | if (!vcpu->arch.pvr) | |
99 | goto out; | |
100 | ||
101 | /* PAPR only works with book3s_64 */ | |
102 | if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled) | |
103 | goto out; | |
104 | ||
105 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
106 | /* HV KVM can only do PAPR mode for now */ | |
107 | if (!vcpu->arch.papr_enabled) | |
108 | goto out; | |
109 | #endif | |
110 | ||
111 | r = true; | |
112 | ||
113 | out: | |
114 | vcpu->arch.sane = r; | |
115 | return r ? 0 : -EINVAL; | |
116 | } | |
117 | ||
bbf45ba5 HB |
118 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) |
119 | { | |
120 | enum emulation_result er; | |
121 | int r; | |
122 | ||
123 | er = kvmppc_emulate_instruction(run, vcpu); | |
124 | switch (er) { | |
125 | case EMULATE_DONE: | |
126 | /* Future optimization: only reload non-volatiles if they were | |
127 | * actually modified. */ | |
128 | r = RESUME_GUEST_NV; | |
129 | break; | |
130 | case EMULATE_DO_MMIO: | |
131 | run->exit_reason = KVM_EXIT_MMIO; | |
132 | /* We must reload nonvolatiles because "update" load/store | |
133 | * instructions modify register state. */ | |
134 | /* Future optimization: only reload non-volatiles if they were | |
135 | * actually modified. */ | |
136 | r = RESUME_HOST_NV; | |
137 | break; | |
138 | case EMULATE_FAIL: | |
139 | /* XXX Deliver Program interrupt to guest. */ | |
140 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, | |
c7f38f46 | 141 | kvmppc_get_last_inst(vcpu)); |
bbf45ba5 HB |
142 | r = RESUME_HOST; |
143 | break; | |
144 | default: | |
145 | BUG(); | |
146 | } | |
147 | ||
148 | return r; | |
149 | } | |
150 | ||
10474ae8 | 151 | int kvm_arch_hardware_enable(void *garbage) |
bbf45ba5 | 152 | { |
10474ae8 | 153 | return 0; |
bbf45ba5 HB |
154 | } |
155 | ||
156 | void kvm_arch_hardware_disable(void *garbage) | |
157 | { | |
158 | } | |
159 | ||
160 | int kvm_arch_hardware_setup(void) | |
161 | { | |
162 | return 0; | |
163 | } | |
164 | ||
165 | void kvm_arch_hardware_unsetup(void) | |
166 | { | |
167 | } | |
168 | ||
169 | void kvm_arch_check_processor_compat(void *rtn) | |
170 | { | |
9dd921cf | 171 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
bbf45ba5 HB |
172 | } |
173 | ||
e08b9637 | 174 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
bbf45ba5 | 175 | { |
e08b9637 CO |
176 | if (type) |
177 | return -EINVAL; | |
178 | ||
f9e0554d | 179 | return kvmppc_core_init_vm(kvm); |
bbf45ba5 HB |
180 | } |
181 | ||
d89f5eff | 182 | void kvm_arch_destroy_vm(struct kvm *kvm) |
bbf45ba5 HB |
183 | { |
184 | unsigned int i; | |
988a2cae | 185 | struct kvm_vcpu *vcpu; |
bbf45ba5 | 186 | |
988a2cae GN |
187 | kvm_for_each_vcpu(i, vcpu, kvm) |
188 | kvm_arch_vcpu_free(vcpu); | |
189 | ||
190 | mutex_lock(&kvm->lock); | |
191 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) | |
192 | kvm->vcpus[i] = NULL; | |
193 | ||
194 | atomic_set(&kvm->online_vcpus, 0); | |
f9e0554d PM |
195 | |
196 | kvmppc_core_destroy_vm(kvm); | |
197 | ||
988a2cae | 198 | mutex_unlock(&kvm->lock); |
bbf45ba5 HB |
199 | } |
200 | ||
ad8ba2cd SY |
201 | void kvm_arch_sync_events(struct kvm *kvm) |
202 | { | |
203 | } | |
204 | ||
bbf45ba5 HB |
205 | int kvm_dev_ioctl_check_extension(long ext) |
206 | { | |
207 | int r; | |
208 | ||
209 | switch (ext) { | |
5ce941ee SW |
210 | #ifdef CONFIG_BOOKE |
211 | case KVM_CAP_PPC_BOOKE_SREGS: | |
212 | #else | |
e15a1137 | 213 | case KVM_CAP_PPC_SEGSTATE: |
930b412a | 214 | case KVM_CAP_PPC_PAPR: |
5ce941ee | 215 | #endif |
18978768 | 216 | case KVM_CAP_PPC_UNSET_IRQ: |
7b4203e8 | 217 | case KVM_CAP_PPC_IRQ_LEVEL: |
71fbfd5f | 218 | case KVM_CAP_ENABLE_CAP: |
de56a948 PM |
219 | r = 1; |
220 | break; | |
221 | #ifndef CONFIG_KVM_BOOK3S_64_HV | |
222 | case KVM_CAP_PPC_PAIRED_SINGLES: | |
ad0a048b | 223 | case KVM_CAP_PPC_OSI: |
15711e9c | 224 | case KVM_CAP_PPC_GET_PVINFO: |
e15a1137 AG |
225 | r = 1; |
226 | break; | |
588968b6 LV |
227 | case KVM_CAP_COALESCED_MMIO: |
228 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
229 | break; | |
54738c09 DG |
230 | #endif |
231 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
232 | case KVM_CAP_SPAPR_TCE: | |
233 | r = 1; | |
234 | break; | |
371fefd6 PM |
235 | case KVM_CAP_PPC_SMT: |
236 | r = threads_per_core; | |
237 | break; | |
aa04b4cc PM |
238 | case KVM_CAP_PPC_RMA: |
239 | r = 1; | |
9e368f29 PM |
240 | /* PPC970 requires an RMA */ |
241 | if (cpu_has_feature(CPU_FTR_ARCH_201)) | |
242 | r = 2; | |
aa04b4cc | 243 | break; |
de56a948 | 244 | #endif |
bbf45ba5 HB |
245 | default: |
246 | r = 0; | |
247 | break; | |
248 | } | |
249 | return r; | |
250 | ||
251 | } | |
252 | ||
253 | long kvm_arch_dev_ioctl(struct file *filp, | |
254 | unsigned int ioctl, unsigned long arg) | |
255 | { | |
256 | return -EINVAL; | |
257 | } | |
258 | ||
f7784b8e MT |
259 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
260 | struct kvm_memory_slot *memslot, | |
261 | struct kvm_memory_slot old, | |
262 | struct kvm_userspace_memory_region *mem, | |
263 | int user_alloc) | |
bbf45ba5 | 264 | { |
f9e0554d | 265 | return kvmppc_core_prepare_memory_region(kvm, mem); |
bbf45ba5 HB |
266 | } |
267 | ||
f7784b8e MT |
268 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
269 | struct kvm_userspace_memory_region *mem, | |
270 | struct kvm_memory_slot old, | |
271 | int user_alloc) | |
272 | { | |
f9e0554d | 273 | kvmppc_core_commit_memory_region(kvm, mem); |
f7784b8e MT |
274 | } |
275 | ||
276 | ||
34d4cb8f MT |
277 | void kvm_arch_flush_shadow(struct kvm *kvm) |
278 | { | |
279 | } | |
280 | ||
bbf45ba5 HB |
281 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
282 | { | |
73e75b41 HB |
283 | struct kvm_vcpu *vcpu; |
284 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
19ccb76a | 285 | vcpu->arch.wqp = &vcpu->wq; |
06056bfb WY |
286 | if (!IS_ERR(vcpu)) |
287 | kvmppc_create_vcpu_debugfs(vcpu, id); | |
73e75b41 | 288 | return vcpu; |
bbf45ba5 HB |
289 | } |
290 | ||
291 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) | |
292 | { | |
a595405d AG |
293 | /* Make sure we're not using the vcpu anymore */ |
294 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
295 | tasklet_kill(&vcpu->arch.tasklet); | |
296 | ||
73e75b41 | 297 | kvmppc_remove_vcpu_debugfs(vcpu); |
db93f574 | 298 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
299 | } |
300 | ||
301 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
302 | { | |
303 | kvm_arch_vcpu_free(vcpu); | |
304 | } | |
305 | ||
306 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
307 | { | |
9dd921cf | 308 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
309 | } |
310 | ||
311 | static void kvmppc_decrementer_func(unsigned long data) | |
312 | { | |
313 | struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; | |
314 | ||
9dd921cf | 315 | kvmppc_core_queue_dec(vcpu); |
45c5eb67 | 316 | |
19ccb76a PM |
317 | if (waitqueue_active(vcpu->arch.wqp)) { |
318 | wake_up_interruptible(vcpu->arch.wqp); | |
45c5eb67 HB |
319 | vcpu->stat.halt_wakeup++; |
320 | } | |
bbf45ba5 HB |
321 | } |
322 | ||
544c6761 AG |
323 | /* |
324 | * low level hrtimer wake routine. Because this runs in hardirq context | |
325 | * we schedule a tasklet to do the real work. | |
326 | */ | |
327 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
328 | { | |
329 | struct kvm_vcpu *vcpu; | |
330 | ||
331 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
332 | tasklet_schedule(&vcpu->arch.tasklet); | |
333 | ||
334 | return HRTIMER_NORESTART; | |
335 | } | |
336 | ||
bbf45ba5 HB |
337 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
338 | { | |
544c6761 AG |
339 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
340 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
341 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 342 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 343 | |
09000adb BB |
344 | #ifdef CONFIG_KVM_EXIT_TIMING |
345 | mutex_init(&vcpu->arch.exit_timing_lock); | |
346 | #endif | |
347 | ||
bbf45ba5 HB |
348 | return 0; |
349 | } | |
350 | ||
351 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
352 | { | |
ecc0981f | 353 | kvmppc_mmu_destroy(vcpu); |
bbf45ba5 HB |
354 | } |
355 | ||
356 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
357 | { | |
eab17672 SW |
358 | #ifdef CONFIG_BOOKE |
359 | /* | |
360 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
361 | * be used by the guest. | |
362 | * | |
363 | * On non-booke this is associated with Altivec and | |
364 | * is handled by code in book3s.c. | |
365 | */ | |
366 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
367 | #endif | |
9dd921cf | 368 | kvmppc_core_vcpu_load(vcpu, cpu); |
de56a948 | 369 | vcpu->cpu = smp_processor_id(); |
bbf45ba5 HB |
370 | } |
371 | ||
372 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
373 | { | |
9dd921cf | 374 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
375 | #ifdef CONFIG_BOOKE |
376 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
377 | #endif | |
de56a948 | 378 | vcpu->cpu = -1; |
bbf45ba5 HB |
379 | } |
380 | ||
d0bfb940 | 381 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
f5d0906b | 382 | struct kvm_guest_debug *dbg) |
bbf45ba5 | 383 | { |
f5d0906b | 384 | return -EINVAL; |
bbf45ba5 HB |
385 | } |
386 | ||
387 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, | |
388 | struct kvm_run *run) | |
389 | { | |
8e5b26b5 | 390 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
391 | } |
392 | ||
393 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
394 | struct kvm_run *run) | |
395 | { | |
69b61833 | 396 | u64 uninitialized_var(gpr); |
bbf45ba5 | 397 | |
8e5b26b5 | 398 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
399 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
400 | return; | |
401 | } | |
402 | ||
403 | if (vcpu->arch.mmio_is_bigendian) { | |
404 | switch (run->mmio.len) { | |
b104d066 | 405 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
406 | case 4: gpr = *(u32 *)run->mmio.data; break; |
407 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
408 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
409 | } |
410 | } else { | |
411 | /* Convert BE data from userland back to LE. */ | |
412 | switch (run->mmio.len) { | |
8e5b26b5 AG |
413 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
414 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
415 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
416 | } |
417 | } | |
8e5b26b5 | 418 | |
3587d534 AG |
419 | if (vcpu->arch.mmio_sign_extend) { |
420 | switch (run->mmio.len) { | |
421 | #ifdef CONFIG_PPC64 | |
422 | case 4: | |
423 | gpr = (s64)(s32)gpr; | |
424 | break; | |
425 | #endif | |
426 | case 2: | |
427 | gpr = (s64)(s16)gpr; | |
428 | break; | |
429 | case 1: | |
430 | gpr = (s64)(s8)gpr; | |
431 | break; | |
432 | } | |
433 | } | |
434 | ||
8e5b26b5 | 435 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 AG |
436 | |
437 | switch (vcpu->arch.io_gpr & KVM_REG_EXT_MASK) { | |
438 | case KVM_REG_GPR: | |
439 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); | |
440 | break; | |
441 | case KVM_REG_FPR: | |
442 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
443 | break; | |
287d5611 | 444 | #ifdef CONFIG_PPC_BOOK3S |
b104d066 AG |
445 | case KVM_REG_QPR: |
446 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
447 | break; | |
448 | case KVM_REG_FQPR: | |
449 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
450 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
451 | break; | |
287d5611 | 452 | #endif |
b104d066 AG |
453 | default: |
454 | BUG(); | |
455 | } | |
bbf45ba5 HB |
456 | } |
457 | ||
458 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
459 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
460 | { | |
461 | if (bytes > sizeof(run->mmio.data)) { | |
462 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
463 | run->mmio.len); | |
464 | } | |
465 | ||
466 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
467 | run->mmio.len = bytes; | |
468 | run->mmio.is_write = 0; | |
469 | ||
470 | vcpu->arch.io_gpr = rt; | |
471 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
472 | vcpu->mmio_needed = 1; | |
473 | vcpu->mmio_is_write = 0; | |
3587d534 | 474 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 HB |
475 | |
476 | return EMULATE_DO_MMIO; | |
477 | } | |
478 | ||
3587d534 AG |
479 | /* Same as above, but sign extends */ |
480 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
481 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
482 | { | |
483 | int r; | |
484 | ||
485 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); | |
486 | vcpu->arch.mmio_sign_extend = 1; | |
487 | ||
488 | return r; | |
489 | } | |
490 | ||
bbf45ba5 | 491 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 492 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
493 | { |
494 | void *data = run->mmio.data; | |
495 | ||
496 | if (bytes > sizeof(run->mmio.data)) { | |
497 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
498 | run->mmio.len); | |
499 | } | |
500 | ||
501 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
502 | run->mmio.len = bytes; | |
503 | run->mmio.is_write = 1; | |
504 | vcpu->mmio_needed = 1; | |
505 | vcpu->mmio_is_write = 1; | |
506 | ||
507 | /* Store the value at the lowest bytes in 'data'. */ | |
508 | if (is_bigendian) { | |
509 | switch (bytes) { | |
b104d066 | 510 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
511 | case 4: *(u32 *)data = val; break; |
512 | case 2: *(u16 *)data = val; break; | |
513 | case 1: *(u8 *)data = val; break; | |
514 | } | |
515 | } else { | |
516 | /* Store LE value into 'data'. */ | |
517 | switch (bytes) { | |
518 | case 4: st_le32(data, val); break; | |
519 | case 2: st_le16(data, val); break; | |
520 | case 1: *(u8 *)data = val; break; | |
521 | } | |
522 | } | |
523 | ||
524 | return EMULATE_DO_MMIO; | |
525 | } | |
526 | ||
527 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
528 | { | |
529 | int r; | |
530 | sigset_t sigsaved; | |
531 | ||
532 | if (vcpu->sigset_active) | |
533 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
534 | ||
535 | if (vcpu->mmio_needed) { | |
536 | if (!vcpu->mmio_is_write) | |
537 | kvmppc_complete_mmio_load(vcpu, run); | |
538 | vcpu->mmio_needed = 0; | |
539 | } else if (vcpu->arch.dcr_needed) { | |
540 | if (!vcpu->arch.dcr_is_write) | |
541 | kvmppc_complete_dcr_load(vcpu, run); | |
542 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
543 | } else if (vcpu->arch.osi_needed) { |
544 | u64 *gprs = run->osi.gprs; | |
545 | int i; | |
546 | ||
547 | for (i = 0; i < 32; i++) | |
548 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
549 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
550 | } else if (vcpu->arch.hcall_needed) { |
551 | int i; | |
552 | ||
553 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
554 | for (i = 0; i < 9; ++i) | |
555 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
556 | vcpu->arch.hcall_needed = 0; | |
bbf45ba5 HB |
557 | } |
558 | ||
9dd921cf | 559 | kvmppc_core_deliver_interrupts(vcpu); |
bbf45ba5 | 560 | |
df6909e5 | 561 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
562 | |
563 | if (vcpu->sigset_active) | |
564 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
565 | ||
566 | return r; | |
567 | } | |
568 | ||
569 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
570 | { | |
19ccb76a | 571 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
18978768 | 572 | kvmppc_core_dequeue_external(vcpu, irq); |
19ccb76a PM |
573 | return 0; |
574 | } | |
575 | ||
576 | kvmppc_core_queue_external(vcpu, irq); | |
45c5eb67 | 577 | |
19ccb76a PM |
578 | if (waitqueue_active(vcpu->arch.wqp)) { |
579 | wake_up_interruptible(vcpu->arch.wqp); | |
45c5eb67 | 580 | vcpu->stat.halt_wakeup++; |
de56a948 PM |
581 | } else if (vcpu->cpu != -1) { |
582 | smp_send_reschedule(vcpu->cpu); | |
45c5eb67 HB |
583 | } |
584 | ||
bbf45ba5 HB |
585 | return 0; |
586 | } | |
587 | ||
71fbfd5f AG |
588 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
589 | struct kvm_enable_cap *cap) | |
590 | { | |
591 | int r; | |
592 | ||
593 | if (cap->flags) | |
594 | return -EINVAL; | |
595 | ||
596 | switch (cap->cap) { | |
ad0a048b AG |
597 | case KVM_CAP_PPC_OSI: |
598 | r = 0; | |
599 | vcpu->arch.osi_enabled = true; | |
600 | break; | |
930b412a AG |
601 | case KVM_CAP_PPC_PAPR: |
602 | r = 0; | |
603 | vcpu->arch.papr_enabled = true; | |
604 | break; | |
71fbfd5f AG |
605 | default: |
606 | r = -EINVAL; | |
607 | break; | |
608 | } | |
609 | ||
af8f38b3 AG |
610 | if (!r) |
611 | r = kvmppc_sanity_check(vcpu); | |
612 | ||
71fbfd5f AG |
613 | return r; |
614 | } | |
615 | ||
bbf45ba5 HB |
616 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
617 | struct kvm_mp_state *mp_state) | |
618 | { | |
619 | return -EINVAL; | |
620 | } | |
621 | ||
622 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
623 | struct kvm_mp_state *mp_state) | |
624 | { | |
625 | return -EINVAL; | |
626 | } | |
627 | ||
628 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
629 | unsigned int ioctl, unsigned long arg) | |
630 | { | |
631 | struct kvm_vcpu *vcpu = filp->private_data; | |
632 | void __user *argp = (void __user *)arg; | |
633 | long r; | |
634 | ||
93736624 AK |
635 | switch (ioctl) { |
636 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
637 | struct kvm_interrupt irq; |
638 | r = -EFAULT; | |
639 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 640 | goto out; |
bbf45ba5 | 641 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 642 | goto out; |
bbf45ba5 | 643 | } |
19483d14 | 644 | |
71fbfd5f AG |
645 | case KVM_ENABLE_CAP: |
646 | { | |
647 | struct kvm_enable_cap cap; | |
648 | r = -EFAULT; | |
649 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
650 | goto out; | |
651 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
652 | break; | |
653 | } | |
bbf45ba5 HB |
654 | default: |
655 | r = -EINVAL; | |
656 | } | |
657 | ||
658 | out: | |
659 | return r; | |
660 | } | |
661 | ||
15711e9c AG |
662 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
663 | { | |
664 | u32 inst_lis = 0x3c000000; | |
665 | u32 inst_ori = 0x60000000; | |
666 | u32 inst_nop = 0x60000000; | |
667 | u32 inst_sc = 0x44000002; | |
668 | u32 inst_imm_mask = 0xffff; | |
669 | ||
670 | /* | |
671 | * The hypercall to get into KVM from within guest context is as | |
672 | * follows: | |
673 | * | |
674 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
675 | * ori r0, KVM_SC_MAGIC_R0@l | |
676 | * sc | |
677 | * nop | |
678 | */ | |
679 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
680 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
681 | pvinfo->hcall[2] = inst_sc; | |
682 | pvinfo->hcall[3] = inst_nop; | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
bbf45ba5 HB |
687 | long kvm_arch_vm_ioctl(struct file *filp, |
688 | unsigned int ioctl, unsigned long arg) | |
689 | { | |
15711e9c | 690 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
691 | long r; |
692 | ||
693 | switch (ioctl) { | |
15711e9c AG |
694 | case KVM_PPC_GET_PVINFO: { |
695 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 696 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
697 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
698 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
699 | r = -EFAULT; | |
700 | goto out; | |
701 | } | |
702 | ||
703 | break; | |
704 | } | |
54738c09 DG |
705 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
706 | case KVM_CREATE_SPAPR_TCE: { | |
707 | struct kvm_create_spapr_tce create_tce; | |
708 | struct kvm *kvm = filp->private_data; | |
709 | ||
710 | r = -EFAULT; | |
711 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
712 | goto out; | |
713 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
714 | goto out; | |
715 | } | |
aa04b4cc PM |
716 | |
717 | case KVM_ALLOCATE_RMA: { | |
718 | struct kvm *kvm = filp->private_data; | |
719 | struct kvm_allocate_rma rma; | |
720 | ||
721 | r = kvm_vm_ioctl_allocate_rma(kvm, &rma); | |
722 | if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) | |
723 | r = -EFAULT; | |
724 | break; | |
725 | } | |
54738c09 DG |
726 | #endif /* CONFIG_KVM_BOOK3S_64_HV */ |
727 | ||
bbf45ba5 | 728 | default: |
367e1319 | 729 | r = -ENOTTY; |
bbf45ba5 HB |
730 | } |
731 | ||
15711e9c | 732 | out: |
bbf45ba5 HB |
733 | return r; |
734 | } | |
735 | ||
736 | int kvm_arch_init(void *opaque) | |
737 | { | |
738 | return 0; | |
739 | } | |
740 | ||
741 | void kvm_arch_exit(void) | |
742 | { | |
743 | } |