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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 | ||
b5904972 | 69 | r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7; |
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: |
dc83b8bc SW |
225 | #ifdef CONFIG_KVM_E500 |
226 | case KVM_CAP_SW_TLB: | |
227 | #endif | |
e15a1137 AG |
228 | r = 1; |
229 | break; | |
588968b6 LV |
230 | case KVM_CAP_COALESCED_MMIO: |
231 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
232 | break; | |
54738c09 DG |
233 | #endif |
234 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
235 | case KVM_CAP_SPAPR_TCE: | |
236 | r = 1; | |
237 | break; | |
371fefd6 PM |
238 | case KVM_CAP_PPC_SMT: |
239 | r = threads_per_core; | |
240 | break; | |
aa04b4cc PM |
241 | case KVM_CAP_PPC_RMA: |
242 | r = 1; | |
9e368f29 PM |
243 | /* PPC970 requires an RMA */ |
244 | if (cpu_has_feature(CPU_FTR_ARCH_201)) | |
245 | r = 2; | |
aa04b4cc | 246 | break; |
de56a948 | 247 | #endif |
bbf45ba5 HB |
248 | default: |
249 | r = 0; | |
250 | break; | |
251 | } | |
252 | return r; | |
253 | ||
254 | } | |
255 | ||
256 | long kvm_arch_dev_ioctl(struct file *filp, | |
257 | unsigned int ioctl, unsigned long arg) | |
258 | { | |
259 | return -EINVAL; | |
260 | } | |
261 | ||
f7784b8e MT |
262 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
263 | struct kvm_memory_slot *memslot, | |
264 | struct kvm_memory_slot old, | |
265 | struct kvm_userspace_memory_region *mem, | |
266 | int user_alloc) | |
bbf45ba5 | 267 | { |
f9e0554d | 268 | return kvmppc_core_prepare_memory_region(kvm, mem); |
bbf45ba5 HB |
269 | } |
270 | ||
f7784b8e MT |
271 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
272 | struct kvm_userspace_memory_region *mem, | |
273 | struct kvm_memory_slot old, | |
274 | int user_alloc) | |
275 | { | |
f9e0554d | 276 | kvmppc_core_commit_memory_region(kvm, mem); |
f7784b8e MT |
277 | } |
278 | ||
279 | ||
34d4cb8f MT |
280 | void kvm_arch_flush_shadow(struct kvm *kvm) |
281 | { | |
282 | } | |
283 | ||
bbf45ba5 HB |
284 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
285 | { | |
73e75b41 HB |
286 | struct kvm_vcpu *vcpu; |
287 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
19ccb76a | 288 | vcpu->arch.wqp = &vcpu->wq; |
06056bfb WY |
289 | if (!IS_ERR(vcpu)) |
290 | kvmppc_create_vcpu_debugfs(vcpu, id); | |
73e75b41 | 291 | return vcpu; |
bbf45ba5 HB |
292 | } |
293 | ||
294 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) | |
295 | { | |
a595405d AG |
296 | /* Make sure we're not using the vcpu anymore */ |
297 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
298 | tasklet_kill(&vcpu->arch.tasklet); | |
299 | ||
73e75b41 | 300 | kvmppc_remove_vcpu_debugfs(vcpu); |
db93f574 | 301 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
302 | } |
303 | ||
304 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
305 | { | |
306 | kvm_arch_vcpu_free(vcpu); | |
307 | } | |
308 | ||
309 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
310 | { | |
9dd921cf | 311 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
312 | } |
313 | ||
314 | static void kvmppc_decrementer_func(unsigned long data) | |
315 | { | |
316 | struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; | |
317 | ||
9dd921cf | 318 | kvmppc_core_queue_dec(vcpu); |
45c5eb67 | 319 | |
19ccb76a PM |
320 | if (waitqueue_active(vcpu->arch.wqp)) { |
321 | wake_up_interruptible(vcpu->arch.wqp); | |
45c5eb67 HB |
322 | vcpu->stat.halt_wakeup++; |
323 | } | |
bbf45ba5 HB |
324 | } |
325 | ||
544c6761 AG |
326 | /* |
327 | * low level hrtimer wake routine. Because this runs in hardirq context | |
328 | * we schedule a tasklet to do the real work. | |
329 | */ | |
330 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
331 | { | |
332 | struct kvm_vcpu *vcpu; | |
333 | ||
334 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
335 | tasklet_schedule(&vcpu->arch.tasklet); | |
336 | ||
337 | return HRTIMER_NORESTART; | |
338 | } | |
339 | ||
bbf45ba5 HB |
340 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
341 | { | |
544c6761 AG |
342 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
343 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
344 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 345 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 346 | |
09000adb BB |
347 | #ifdef CONFIG_KVM_EXIT_TIMING |
348 | mutex_init(&vcpu->arch.exit_timing_lock); | |
349 | #endif | |
350 | ||
bbf45ba5 HB |
351 | return 0; |
352 | } | |
353 | ||
354 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
355 | { | |
ecc0981f | 356 | kvmppc_mmu_destroy(vcpu); |
bbf45ba5 HB |
357 | } |
358 | ||
359 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
360 | { | |
eab17672 SW |
361 | #ifdef CONFIG_BOOKE |
362 | /* | |
363 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
364 | * be used by the guest. | |
365 | * | |
366 | * On non-booke this is associated with Altivec and | |
367 | * is handled by code in book3s.c. | |
368 | */ | |
369 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
370 | #endif | |
9dd921cf | 371 | kvmppc_core_vcpu_load(vcpu, cpu); |
de56a948 | 372 | vcpu->cpu = smp_processor_id(); |
bbf45ba5 HB |
373 | } |
374 | ||
375 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
376 | { | |
9dd921cf | 377 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
378 | #ifdef CONFIG_BOOKE |
379 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
380 | #endif | |
de56a948 | 381 | vcpu->cpu = -1; |
bbf45ba5 HB |
382 | } |
383 | ||
d0bfb940 | 384 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
f5d0906b | 385 | struct kvm_guest_debug *dbg) |
bbf45ba5 | 386 | { |
f5d0906b | 387 | return -EINVAL; |
bbf45ba5 HB |
388 | } |
389 | ||
390 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, | |
391 | struct kvm_run *run) | |
392 | { | |
8e5b26b5 | 393 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
394 | } |
395 | ||
396 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
397 | struct kvm_run *run) | |
398 | { | |
69b61833 | 399 | u64 uninitialized_var(gpr); |
bbf45ba5 | 400 | |
8e5b26b5 | 401 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
402 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
403 | return; | |
404 | } | |
405 | ||
406 | if (vcpu->arch.mmio_is_bigendian) { | |
407 | switch (run->mmio.len) { | |
b104d066 | 408 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
409 | case 4: gpr = *(u32 *)run->mmio.data; break; |
410 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
411 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
412 | } |
413 | } else { | |
414 | /* Convert BE data from userland back to LE. */ | |
415 | switch (run->mmio.len) { | |
8e5b26b5 AG |
416 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
417 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
418 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
419 | } |
420 | } | |
8e5b26b5 | 421 | |
3587d534 AG |
422 | if (vcpu->arch.mmio_sign_extend) { |
423 | switch (run->mmio.len) { | |
424 | #ifdef CONFIG_PPC64 | |
425 | case 4: | |
426 | gpr = (s64)(s32)gpr; | |
427 | break; | |
428 | #endif | |
429 | case 2: | |
430 | gpr = (s64)(s16)gpr; | |
431 | break; | |
432 | case 1: | |
433 | gpr = (s64)(s8)gpr; | |
434 | break; | |
435 | } | |
436 | } | |
437 | ||
8e5b26b5 | 438 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 AG |
439 | |
440 | switch (vcpu->arch.io_gpr & KVM_REG_EXT_MASK) { | |
441 | case KVM_REG_GPR: | |
442 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); | |
443 | break; | |
444 | case KVM_REG_FPR: | |
445 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
446 | break; | |
287d5611 | 447 | #ifdef CONFIG_PPC_BOOK3S |
b104d066 AG |
448 | case KVM_REG_QPR: |
449 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
450 | break; | |
451 | case KVM_REG_FQPR: | |
452 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
453 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
454 | break; | |
287d5611 | 455 | #endif |
b104d066 AG |
456 | default: |
457 | BUG(); | |
458 | } | |
bbf45ba5 HB |
459 | } |
460 | ||
461 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
462 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
463 | { | |
464 | if (bytes > sizeof(run->mmio.data)) { | |
465 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
466 | run->mmio.len); | |
467 | } | |
468 | ||
469 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
470 | run->mmio.len = bytes; | |
471 | run->mmio.is_write = 0; | |
472 | ||
473 | vcpu->arch.io_gpr = rt; | |
474 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
475 | vcpu->mmio_needed = 1; | |
476 | vcpu->mmio_is_write = 0; | |
3587d534 | 477 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 HB |
478 | |
479 | return EMULATE_DO_MMIO; | |
480 | } | |
481 | ||
3587d534 AG |
482 | /* Same as above, but sign extends */ |
483 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
484 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
485 | { | |
486 | int r; | |
487 | ||
488 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); | |
489 | vcpu->arch.mmio_sign_extend = 1; | |
490 | ||
491 | return r; | |
492 | } | |
493 | ||
bbf45ba5 | 494 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 495 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
496 | { |
497 | void *data = run->mmio.data; | |
498 | ||
499 | if (bytes > sizeof(run->mmio.data)) { | |
500 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
501 | run->mmio.len); | |
502 | } | |
503 | ||
504 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
505 | run->mmio.len = bytes; | |
506 | run->mmio.is_write = 1; | |
507 | vcpu->mmio_needed = 1; | |
508 | vcpu->mmio_is_write = 1; | |
509 | ||
510 | /* Store the value at the lowest bytes in 'data'. */ | |
511 | if (is_bigendian) { | |
512 | switch (bytes) { | |
b104d066 | 513 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
514 | case 4: *(u32 *)data = val; break; |
515 | case 2: *(u16 *)data = val; break; | |
516 | case 1: *(u8 *)data = val; break; | |
517 | } | |
518 | } else { | |
519 | /* Store LE value into 'data'. */ | |
520 | switch (bytes) { | |
521 | case 4: st_le32(data, val); break; | |
522 | case 2: st_le16(data, val); break; | |
523 | case 1: *(u8 *)data = val; break; | |
524 | } | |
525 | } | |
526 | ||
527 | return EMULATE_DO_MMIO; | |
528 | } | |
529 | ||
530 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
531 | { | |
532 | int r; | |
533 | sigset_t sigsaved; | |
534 | ||
535 | if (vcpu->sigset_active) | |
536 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
537 | ||
538 | if (vcpu->mmio_needed) { | |
539 | if (!vcpu->mmio_is_write) | |
540 | kvmppc_complete_mmio_load(vcpu, run); | |
541 | vcpu->mmio_needed = 0; | |
542 | } else if (vcpu->arch.dcr_needed) { | |
543 | if (!vcpu->arch.dcr_is_write) | |
544 | kvmppc_complete_dcr_load(vcpu, run); | |
545 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
546 | } else if (vcpu->arch.osi_needed) { |
547 | u64 *gprs = run->osi.gprs; | |
548 | int i; | |
549 | ||
550 | for (i = 0; i < 32; i++) | |
551 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
552 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
553 | } else if (vcpu->arch.hcall_needed) { |
554 | int i; | |
555 | ||
556 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
557 | for (i = 0; i < 9; ++i) | |
558 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
559 | vcpu->arch.hcall_needed = 0; | |
bbf45ba5 HB |
560 | } |
561 | ||
df6909e5 | 562 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
563 | |
564 | if (vcpu->sigset_active) | |
565 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
566 | ||
567 | return r; | |
568 | } | |
569 | ||
570 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
571 | { | |
19ccb76a | 572 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
18978768 | 573 | kvmppc_core_dequeue_external(vcpu, irq); |
19ccb76a PM |
574 | return 0; |
575 | } | |
576 | ||
577 | kvmppc_core_queue_external(vcpu, irq); | |
45c5eb67 | 578 | |
19ccb76a PM |
579 | if (waitqueue_active(vcpu->arch.wqp)) { |
580 | wake_up_interruptible(vcpu->arch.wqp); | |
45c5eb67 | 581 | vcpu->stat.halt_wakeup++; |
de56a948 PM |
582 | } else if (vcpu->cpu != -1) { |
583 | smp_send_reschedule(vcpu->cpu); | |
45c5eb67 HB |
584 | } |
585 | ||
bbf45ba5 HB |
586 | return 0; |
587 | } | |
588 | ||
71fbfd5f AG |
589 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
590 | struct kvm_enable_cap *cap) | |
591 | { | |
592 | int r; | |
593 | ||
594 | if (cap->flags) | |
595 | return -EINVAL; | |
596 | ||
597 | switch (cap->cap) { | |
ad0a048b AG |
598 | case KVM_CAP_PPC_OSI: |
599 | r = 0; | |
600 | vcpu->arch.osi_enabled = true; | |
601 | break; | |
930b412a AG |
602 | case KVM_CAP_PPC_PAPR: |
603 | r = 0; | |
604 | vcpu->arch.papr_enabled = true; | |
605 | break; | |
dc83b8bc SW |
606 | #ifdef CONFIG_KVM_E500 |
607 | case KVM_CAP_SW_TLB: { | |
608 | struct kvm_config_tlb cfg; | |
609 | void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; | |
610 | ||
611 | r = -EFAULT; | |
612 | if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) | |
613 | break; | |
614 | ||
615 | r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); | |
616 | break; | |
617 | } | |
618 | #endif | |
71fbfd5f AG |
619 | default: |
620 | r = -EINVAL; | |
621 | break; | |
622 | } | |
623 | ||
af8f38b3 AG |
624 | if (!r) |
625 | r = kvmppc_sanity_check(vcpu); | |
626 | ||
71fbfd5f AG |
627 | return r; |
628 | } | |
629 | ||
bbf45ba5 HB |
630 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
631 | struct kvm_mp_state *mp_state) | |
632 | { | |
633 | return -EINVAL; | |
634 | } | |
635 | ||
636 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
637 | struct kvm_mp_state *mp_state) | |
638 | { | |
639 | return -EINVAL; | |
640 | } | |
641 | ||
642 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
643 | unsigned int ioctl, unsigned long arg) | |
644 | { | |
645 | struct kvm_vcpu *vcpu = filp->private_data; | |
646 | void __user *argp = (void __user *)arg; | |
647 | long r; | |
648 | ||
93736624 AK |
649 | switch (ioctl) { |
650 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
651 | struct kvm_interrupt irq; |
652 | r = -EFAULT; | |
653 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 654 | goto out; |
bbf45ba5 | 655 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 656 | goto out; |
bbf45ba5 | 657 | } |
19483d14 | 658 | |
71fbfd5f AG |
659 | case KVM_ENABLE_CAP: |
660 | { | |
661 | struct kvm_enable_cap cap; | |
662 | r = -EFAULT; | |
663 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
664 | goto out; | |
665 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
666 | break; | |
667 | } | |
dc83b8bc SW |
668 | |
669 | #ifdef CONFIG_KVM_E500 | |
670 | case KVM_DIRTY_TLB: { | |
671 | struct kvm_dirty_tlb dirty; | |
672 | r = -EFAULT; | |
673 | if (copy_from_user(&dirty, argp, sizeof(dirty))) | |
674 | goto out; | |
675 | r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); | |
676 | break; | |
677 | } | |
678 | #endif | |
679 | ||
bbf45ba5 HB |
680 | default: |
681 | r = -EINVAL; | |
682 | } | |
683 | ||
684 | out: | |
685 | return r; | |
686 | } | |
687 | ||
5b1c1493 CO |
688 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
689 | { | |
690 | return VM_FAULT_SIGBUS; | |
691 | } | |
692 | ||
15711e9c AG |
693 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
694 | { | |
695 | u32 inst_lis = 0x3c000000; | |
696 | u32 inst_ori = 0x60000000; | |
697 | u32 inst_nop = 0x60000000; | |
698 | u32 inst_sc = 0x44000002; | |
699 | u32 inst_imm_mask = 0xffff; | |
700 | ||
701 | /* | |
702 | * The hypercall to get into KVM from within guest context is as | |
703 | * follows: | |
704 | * | |
705 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
706 | * ori r0, KVM_SC_MAGIC_R0@l | |
707 | * sc | |
708 | * nop | |
709 | */ | |
710 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
711 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
712 | pvinfo->hcall[2] = inst_sc; | |
713 | pvinfo->hcall[3] = inst_nop; | |
714 | ||
715 | return 0; | |
716 | } | |
717 | ||
bbf45ba5 HB |
718 | long kvm_arch_vm_ioctl(struct file *filp, |
719 | unsigned int ioctl, unsigned long arg) | |
720 | { | |
15711e9c | 721 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
722 | long r; |
723 | ||
724 | switch (ioctl) { | |
15711e9c AG |
725 | case KVM_PPC_GET_PVINFO: { |
726 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 727 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
728 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
729 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
730 | r = -EFAULT; | |
731 | goto out; | |
732 | } | |
733 | ||
734 | break; | |
735 | } | |
54738c09 DG |
736 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
737 | case KVM_CREATE_SPAPR_TCE: { | |
738 | struct kvm_create_spapr_tce create_tce; | |
739 | struct kvm *kvm = filp->private_data; | |
740 | ||
741 | r = -EFAULT; | |
742 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
743 | goto out; | |
744 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
745 | goto out; | |
746 | } | |
aa04b4cc PM |
747 | |
748 | case KVM_ALLOCATE_RMA: { | |
749 | struct kvm *kvm = filp->private_data; | |
750 | struct kvm_allocate_rma rma; | |
751 | ||
752 | r = kvm_vm_ioctl_allocate_rma(kvm, &rma); | |
753 | if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) | |
754 | r = -EFAULT; | |
755 | break; | |
756 | } | |
54738c09 DG |
757 | #endif /* CONFIG_KVM_BOOK3S_64_HV */ |
758 | ||
bbf45ba5 | 759 | default: |
367e1319 | 760 | r = -ENOTTY; |
bbf45ba5 HB |
761 | } |
762 | ||
15711e9c | 763 | out: |
bbf45ba5 HB |
764 | return r; |
765 | } | |
766 | ||
767 | int kvm_arch_init(void *opaque) | |
768 | { | |
769 | return 0; | |
770 | } | |
771 | ||
772 | void kvm_arch_exit(void) | |
773 | { | |
774 | } |