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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 | 41 | return !(v->arch.shared->msr & MSR_WE) || |
dfd4d47e SW |
42 | !!(v->arch.pending_exceptions) || |
43 | v->requests; | |
bbf45ba5 HB |
44 | } |
45 | ||
b6d33834 CD |
46 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) |
47 | { | |
48 | return 1; | |
49 | } | |
50 | ||
2a342ed5 AG |
51 | int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) |
52 | { | |
53 | int nr = kvmppc_get_gpr(vcpu, 11); | |
54 | int r; | |
55 | unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); | |
56 | unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); | |
57 | unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); | |
58 | unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); | |
59 | unsigned long r2 = 0; | |
60 | ||
61 | if (!(vcpu->arch.shared->msr & MSR_SF)) { | |
62 | /* 32 bit mode */ | |
63 | param1 &= 0xffffffff; | |
64 | param2 &= 0xffffffff; | |
65 | param3 &= 0xffffffff; | |
66 | param4 &= 0xffffffff; | |
67 | } | |
68 | ||
69 | switch (nr) { | |
5fc87407 AG |
70 | case HC_VENDOR_KVM | KVM_HC_PPC_MAP_MAGIC_PAGE: |
71 | { | |
72 | vcpu->arch.magic_page_pa = param1; | |
73 | vcpu->arch.magic_page_ea = param2; | |
74 | ||
b5904972 | 75 | r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7; |
7508e16c | 76 | |
5fc87407 AG |
77 | r = HC_EV_SUCCESS; |
78 | break; | |
79 | } | |
2a342ed5 AG |
80 | case HC_VENDOR_KVM | KVM_HC_FEATURES: |
81 | r = HC_EV_SUCCESS; | |
a4cd8b23 SW |
82 | #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500) |
83 | /* XXX Missing magic page on 44x */ | |
5fc87407 AG |
84 | r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); |
85 | #endif | |
2a342ed5 AG |
86 | |
87 | /* Second return value is in r4 */ | |
2a342ed5 AG |
88 | break; |
89 | default: | |
90 | r = HC_EV_UNIMPLEMENTED; | |
91 | break; | |
92 | } | |
93 | ||
7508e16c AG |
94 | kvmppc_set_gpr(vcpu, 4, r2); |
95 | ||
2a342ed5 AG |
96 | return r; |
97 | } | |
bbf45ba5 | 98 | |
af8f38b3 AG |
99 | int kvmppc_sanity_check(struct kvm_vcpu *vcpu) |
100 | { | |
101 | int r = false; | |
102 | ||
103 | /* We have to know what CPU to virtualize */ | |
104 | if (!vcpu->arch.pvr) | |
105 | goto out; | |
106 | ||
107 | /* PAPR only works with book3s_64 */ | |
108 | if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled) | |
109 | goto out; | |
110 | ||
111 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
112 | /* HV KVM can only do PAPR mode for now */ | |
113 | if (!vcpu->arch.papr_enabled) | |
114 | goto out; | |
115 | #endif | |
116 | ||
117 | r = true; | |
118 | ||
119 | out: | |
120 | vcpu->arch.sane = r; | |
121 | return r ? 0 : -EINVAL; | |
122 | } | |
123 | ||
bbf45ba5 HB |
124 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) |
125 | { | |
126 | enum emulation_result er; | |
127 | int r; | |
128 | ||
129 | er = kvmppc_emulate_instruction(run, vcpu); | |
130 | switch (er) { | |
131 | case EMULATE_DONE: | |
132 | /* Future optimization: only reload non-volatiles if they were | |
133 | * actually modified. */ | |
134 | r = RESUME_GUEST_NV; | |
135 | break; | |
136 | case EMULATE_DO_MMIO: | |
137 | run->exit_reason = KVM_EXIT_MMIO; | |
138 | /* We must reload nonvolatiles because "update" load/store | |
139 | * instructions modify register state. */ | |
140 | /* Future optimization: only reload non-volatiles if they were | |
141 | * actually modified. */ | |
142 | r = RESUME_HOST_NV; | |
143 | break; | |
144 | case EMULATE_FAIL: | |
145 | /* XXX Deliver Program interrupt to guest. */ | |
146 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, | |
c7f38f46 | 147 | kvmppc_get_last_inst(vcpu)); |
bbf45ba5 HB |
148 | r = RESUME_HOST; |
149 | break; | |
150 | default: | |
151 | BUG(); | |
152 | } | |
153 | ||
154 | return r; | |
155 | } | |
156 | ||
10474ae8 | 157 | int kvm_arch_hardware_enable(void *garbage) |
bbf45ba5 | 158 | { |
10474ae8 | 159 | return 0; |
bbf45ba5 HB |
160 | } |
161 | ||
162 | void kvm_arch_hardware_disable(void *garbage) | |
163 | { | |
164 | } | |
165 | ||
166 | int kvm_arch_hardware_setup(void) | |
167 | { | |
168 | return 0; | |
169 | } | |
170 | ||
171 | void kvm_arch_hardware_unsetup(void) | |
172 | { | |
173 | } | |
174 | ||
175 | void kvm_arch_check_processor_compat(void *rtn) | |
176 | { | |
9dd921cf | 177 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
bbf45ba5 HB |
178 | } |
179 | ||
e08b9637 | 180 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
bbf45ba5 | 181 | { |
e08b9637 CO |
182 | if (type) |
183 | return -EINVAL; | |
184 | ||
f9e0554d | 185 | return kvmppc_core_init_vm(kvm); |
bbf45ba5 HB |
186 | } |
187 | ||
d89f5eff | 188 | void kvm_arch_destroy_vm(struct kvm *kvm) |
bbf45ba5 HB |
189 | { |
190 | unsigned int i; | |
988a2cae | 191 | struct kvm_vcpu *vcpu; |
bbf45ba5 | 192 | |
988a2cae GN |
193 | kvm_for_each_vcpu(i, vcpu, kvm) |
194 | kvm_arch_vcpu_free(vcpu); | |
195 | ||
196 | mutex_lock(&kvm->lock); | |
197 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) | |
198 | kvm->vcpus[i] = NULL; | |
199 | ||
200 | atomic_set(&kvm->online_vcpus, 0); | |
f9e0554d PM |
201 | |
202 | kvmppc_core_destroy_vm(kvm); | |
203 | ||
988a2cae | 204 | mutex_unlock(&kvm->lock); |
bbf45ba5 HB |
205 | } |
206 | ||
ad8ba2cd SY |
207 | void kvm_arch_sync_events(struct kvm *kvm) |
208 | { | |
209 | } | |
210 | ||
bbf45ba5 HB |
211 | int kvm_dev_ioctl_check_extension(long ext) |
212 | { | |
213 | int r; | |
214 | ||
215 | switch (ext) { | |
5ce941ee SW |
216 | #ifdef CONFIG_BOOKE |
217 | case KVM_CAP_PPC_BOOKE_SREGS: | |
218 | #else | |
e15a1137 | 219 | case KVM_CAP_PPC_SEGSTATE: |
1022fc3d | 220 | case KVM_CAP_PPC_HIOR: |
930b412a | 221 | case KVM_CAP_PPC_PAPR: |
5ce941ee | 222 | #endif |
18978768 | 223 | case KVM_CAP_PPC_UNSET_IRQ: |
7b4203e8 | 224 | case KVM_CAP_PPC_IRQ_LEVEL: |
71fbfd5f | 225 | case KVM_CAP_ENABLE_CAP: |
e24ed81f | 226 | case KVM_CAP_ONE_REG: |
de56a948 PM |
227 | r = 1; |
228 | break; | |
229 | #ifndef CONFIG_KVM_BOOK3S_64_HV | |
230 | case KVM_CAP_PPC_PAIRED_SINGLES: | |
ad0a048b | 231 | case KVM_CAP_PPC_OSI: |
15711e9c | 232 | case KVM_CAP_PPC_GET_PVINFO: |
dc83b8bc SW |
233 | #ifdef CONFIG_KVM_E500 |
234 | case KVM_CAP_SW_TLB: | |
235 | #endif | |
e15a1137 AG |
236 | r = 1; |
237 | break; | |
588968b6 LV |
238 | case KVM_CAP_COALESCED_MMIO: |
239 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
240 | break; | |
54738c09 DG |
241 | #endif |
242 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
243 | case KVM_CAP_SPAPR_TCE: | |
244 | r = 1; | |
245 | break; | |
371fefd6 PM |
246 | case KVM_CAP_PPC_SMT: |
247 | r = threads_per_core; | |
248 | break; | |
aa04b4cc PM |
249 | case KVM_CAP_PPC_RMA: |
250 | r = 1; | |
9e368f29 PM |
251 | /* PPC970 requires an RMA */ |
252 | if (cpu_has_feature(CPU_FTR_ARCH_201)) | |
253 | r = 2; | |
aa04b4cc | 254 | break; |
342d3db7 PM |
255 | case KVM_CAP_SYNC_MMU: |
256 | r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0; | |
257 | break; | |
de56a948 | 258 | #endif |
b5434032 ME |
259 | case KVM_CAP_NR_VCPUS: |
260 | /* | |
261 | * Recommending a number of CPUs is somewhat arbitrary; we | |
262 | * return the number of present CPUs for -HV (since a host | |
263 | * will have secondary threads "offline"), and for other KVM | |
264 | * implementations just count online CPUs. | |
265 | */ | |
266 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
267 | r = num_present_cpus(); | |
268 | #else | |
269 | r = num_online_cpus(); | |
270 | #endif | |
271 | break; | |
272 | case KVM_CAP_MAX_VCPUS: | |
273 | r = KVM_MAX_VCPUS; | |
274 | break; | |
bbf45ba5 HB |
275 | default: |
276 | r = 0; | |
277 | break; | |
278 | } | |
279 | return r; | |
280 | ||
281 | } | |
282 | ||
283 | long kvm_arch_dev_ioctl(struct file *filp, | |
284 | unsigned int ioctl, unsigned long arg) | |
285 | { | |
286 | return -EINVAL; | |
287 | } | |
288 | ||
db3fe4eb TY |
289 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
290 | struct kvm_memory_slot *dont) | |
291 | { | |
292 | } | |
293 | ||
294 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages) | |
295 | { | |
296 | return 0; | |
297 | } | |
298 | ||
f7784b8e MT |
299 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
300 | struct kvm_memory_slot *memslot, | |
301 | struct kvm_memory_slot old, | |
302 | struct kvm_userspace_memory_region *mem, | |
303 | int user_alloc) | |
bbf45ba5 | 304 | { |
f9e0554d | 305 | return kvmppc_core_prepare_memory_region(kvm, mem); |
bbf45ba5 HB |
306 | } |
307 | ||
f7784b8e MT |
308 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
309 | struct kvm_userspace_memory_region *mem, | |
310 | struct kvm_memory_slot old, | |
311 | int user_alloc) | |
312 | { | |
f9e0554d | 313 | kvmppc_core_commit_memory_region(kvm, mem); |
f7784b8e MT |
314 | } |
315 | ||
316 | ||
34d4cb8f MT |
317 | void kvm_arch_flush_shadow(struct kvm *kvm) |
318 | { | |
319 | } | |
320 | ||
bbf45ba5 HB |
321 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
322 | { | |
73e75b41 HB |
323 | struct kvm_vcpu *vcpu; |
324 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
03cdab53 ME |
325 | if (!IS_ERR(vcpu)) { |
326 | vcpu->arch.wqp = &vcpu->wq; | |
06056bfb | 327 | kvmppc_create_vcpu_debugfs(vcpu, id); |
03cdab53 | 328 | } |
73e75b41 | 329 | return vcpu; |
bbf45ba5 HB |
330 | } |
331 | ||
332 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) | |
333 | { | |
a595405d AG |
334 | /* Make sure we're not using the vcpu anymore */ |
335 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
336 | tasklet_kill(&vcpu->arch.tasklet); | |
337 | ||
73e75b41 | 338 | kvmppc_remove_vcpu_debugfs(vcpu); |
db93f574 | 339 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
340 | } |
341 | ||
342 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
343 | { | |
344 | kvm_arch_vcpu_free(vcpu); | |
345 | } | |
346 | ||
347 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
348 | { | |
9dd921cf | 349 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
350 | } |
351 | ||
544c6761 AG |
352 | /* |
353 | * low level hrtimer wake routine. Because this runs in hardirq context | |
354 | * we schedule a tasklet to do the real work. | |
355 | */ | |
356 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
357 | { | |
358 | struct kvm_vcpu *vcpu; | |
359 | ||
360 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
361 | tasklet_schedule(&vcpu->arch.tasklet); | |
362 | ||
363 | return HRTIMER_NORESTART; | |
364 | } | |
365 | ||
bbf45ba5 HB |
366 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
367 | { | |
544c6761 AG |
368 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
369 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
370 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 371 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 372 | |
09000adb BB |
373 | #ifdef CONFIG_KVM_EXIT_TIMING |
374 | mutex_init(&vcpu->arch.exit_timing_lock); | |
375 | #endif | |
376 | ||
bbf45ba5 HB |
377 | return 0; |
378 | } | |
379 | ||
380 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
381 | { | |
ecc0981f | 382 | kvmppc_mmu_destroy(vcpu); |
bbf45ba5 HB |
383 | } |
384 | ||
385 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
386 | { | |
eab17672 SW |
387 | #ifdef CONFIG_BOOKE |
388 | /* | |
389 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
390 | * be used by the guest. | |
391 | * | |
392 | * On non-booke this is associated with Altivec and | |
393 | * is handled by code in book3s.c. | |
394 | */ | |
395 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
396 | #endif | |
9dd921cf | 397 | kvmppc_core_vcpu_load(vcpu, cpu); |
de56a948 | 398 | vcpu->cpu = smp_processor_id(); |
bbf45ba5 HB |
399 | } |
400 | ||
401 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
402 | { | |
9dd921cf | 403 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
404 | #ifdef CONFIG_BOOKE |
405 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
406 | #endif | |
de56a948 | 407 | vcpu->cpu = -1; |
bbf45ba5 HB |
408 | } |
409 | ||
d0bfb940 | 410 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
f5d0906b | 411 | struct kvm_guest_debug *dbg) |
bbf45ba5 | 412 | { |
f5d0906b | 413 | return -EINVAL; |
bbf45ba5 HB |
414 | } |
415 | ||
416 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, | |
417 | struct kvm_run *run) | |
418 | { | |
8e5b26b5 | 419 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
420 | } |
421 | ||
422 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
423 | struct kvm_run *run) | |
424 | { | |
69b61833 | 425 | u64 uninitialized_var(gpr); |
bbf45ba5 | 426 | |
8e5b26b5 | 427 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
428 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
429 | return; | |
430 | } | |
431 | ||
432 | if (vcpu->arch.mmio_is_bigendian) { | |
433 | switch (run->mmio.len) { | |
b104d066 | 434 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
435 | case 4: gpr = *(u32 *)run->mmio.data; break; |
436 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
437 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
438 | } |
439 | } else { | |
440 | /* Convert BE data from userland back to LE. */ | |
441 | switch (run->mmio.len) { | |
8e5b26b5 AG |
442 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
443 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
444 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
445 | } |
446 | } | |
8e5b26b5 | 447 | |
3587d534 AG |
448 | if (vcpu->arch.mmio_sign_extend) { |
449 | switch (run->mmio.len) { | |
450 | #ifdef CONFIG_PPC64 | |
451 | case 4: | |
452 | gpr = (s64)(s32)gpr; | |
453 | break; | |
454 | #endif | |
455 | case 2: | |
456 | gpr = (s64)(s16)gpr; | |
457 | break; | |
458 | case 1: | |
459 | gpr = (s64)(s8)gpr; | |
460 | break; | |
461 | } | |
462 | } | |
463 | ||
8e5b26b5 | 464 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 | 465 | |
b3c5d3c2 AG |
466 | switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) { |
467 | case KVM_MMIO_REG_GPR: | |
b104d066 AG |
468 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
469 | break; | |
b3c5d3c2 AG |
470 | case KVM_MMIO_REG_FPR: |
471 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 472 | break; |
287d5611 | 473 | #ifdef CONFIG_PPC_BOOK3S |
b3c5d3c2 AG |
474 | case KVM_MMIO_REG_QPR: |
475 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 476 | break; |
b3c5d3c2 AG |
477 | case KVM_MMIO_REG_FQPR: |
478 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
479 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 480 | break; |
287d5611 | 481 | #endif |
b104d066 AG |
482 | default: |
483 | BUG(); | |
484 | } | |
bbf45ba5 HB |
485 | } |
486 | ||
487 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
488 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
489 | { | |
490 | if (bytes > sizeof(run->mmio.data)) { | |
491 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
492 | run->mmio.len); | |
493 | } | |
494 | ||
495 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
496 | run->mmio.len = bytes; | |
497 | run->mmio.is_write = 0; | |
498 | ||
499 | vcpu->arch.io_gpr = rt; | |
500 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
501 | vcpu->mmio_needed = 1; | |
502 | vcpu->mmio_is_write = 0; | |
3587d534 | 503 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 HB |
504 | |
505 | return EMULATE_DO_MMIO; | |
506 | } | |
507 | ||
3587d534 AG |
508 | /* Same as above, but sign extends */ |
509 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
510 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
511 | { | |
512 | int r; | |
513 | ||
514 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); | |
515 | vcpu->arch.mmio_sign_extend = 1; | |
516 | ||
517 | return r; | |
518 | } | |
519 | ||
bbf45ba5 | 520 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 521 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
522 | { |
523 | void *data = run->mmio.data; | |
524 | ||
525 | if (bytes > sizeof(run->mmio.data)) { | |
526 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
527 | run->mmio.len); | |
528 | } | |
529 | ||
530 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
531 | run->mmio.len = bytes; | |
532 | run->mmio.is_write = 1; | |
533 | vcpu->mmio_needed = 1; | |
534 | vcpu->mmio_is_write = 1; | |
535 | ||
536 | /* Store the value at the lowest bytes in 'data'. */ | |
537 | if (is_bigendian) { | |
538 | switch (bytes) { | |
b104d066 | 539 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
540 | case 4: *(u32 *)data = val; break; |
541 | case 2: *(u16 *)data = val; break; | |
542 | case 1: *(u8 *)data = val; break; | |
543 | } | |
544 | } else { | |
545 | /* Store LE value into 'data'. */ | |
546 | switch (bytes) { | |
547 | case 4: st_le32(data, val); break; | |
548 | case 2: st_le16(data, val); break; | |
549 | case 1: *(u8 *)data = val; break; | |
550 | } | |
551 | } | |
552 | ||
553 | return EMULATE_DO_MMIO; | |
554 | } | |
555 | ||
556 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
557 | { | |
558 | int r; | |
559 | sigset_t sigsaved; | |
560 | ||
561 | if (vcpu->sigset_active) | |
562 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
563 | ||
564 | if (vcpu->mmio_needed) { | |
565 | if (!vcpu->mmio_is_write) | |
566 | kvmppc_complete_mmio_load(vcpu, run); | |
567 | vcpu->mmio_needed = 0; | |
568 | } else if (vcpu->arch.dcr_needed) { | |
569 | if (!vcpu->arch.dcr_is_write) | |
570 | kvmppc_complete_dcr_load(vcpu, run); | |
571 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
572 | } else if (vcpu->arch.osi_needed) { |
573 | u64 *gprs = run->osi.gprs; | |
574 | int i; | |
575 | ||
576 | for (i = 0; i < 32; i++) | |
577 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
578 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
579 | } else if (vcpu->arch.hcall_needed) { |
580 | int i; | |
581 | ||
582 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
583 | for (i = 0; i < 9; ++i) | |
584 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
585 | vcpu->arch.hcall_needed = 0; | |
bbf45ba5 HB |
586 | } |
587 | ||
df6909e5 | 588 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
589 | |
590 | if (vcpu->sigset_active) | |
591 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
592 | ||
593 | return r; | |
594 | } | |
595 | ||
596 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
597 | { | |
19ccb76a | 598 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
18978768 | 599 | kvmppc_core_dequeue_external(vcpu, irq); |
19ccb76a PM |
600 | return 0; |
601 | } | |
602 | ||
603 | kvmppc_core_queue_external(vcpu, irq); | |
b6d33834 | 604 | |
dfd4d47e | 605 | kvm_vcpu_kick(vcpu); |
45c5eb67 | 606 | |
bbf45ba5 HB |
607 | return 0; |
608 | } | |
609 | ||
71fbfd5f AG |
610 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
611 | struct kvm_enable_cap *cap) | |
612 | { | |
613 | int r; | |
614 | ||
615 | if (cap->flags) | |
616 | return -EINVAL; | |
617 | ||
618 | switch (cap->cap) { | |
ad0a048b AG |
619 | case KVM_CAP_PPC_OSI: |
620 | r = 0; | |
621 | vcpu->arch.osi_enabled = true; | |
622 | break; | |
930b412a AG |
623 | case KVM_CAP_PPC_PAPR: |
624 | r = 0; | |
625 | vcpu->arch.papr_enabled = true; | |
626 | break; | |
dc83b8bc SW |
627 | #ifdef CONFIG_KVM_E500 |
628 | case KVM_CAP_SW_TLB: { | |
629 | struct kvm_config_tlb cfg; | |
630 | void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; | |
631 | ||
632 | r = -EFAULT; | |
633 | if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) | |
634 | break; | |
635 | ||
636 | r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); | |
637 | break; | |
638 | } | |
639 | #endif | |
71fbfd5f AG |
640 | default: |
641 | r = -EINVAL; | |
642 | break; | |
643 | } | |
644 | ||
af8f38b3 AG |
645 | if (!r) |
646 | r = kvmppc_sanity_check(vcpu); | |
647 | ||
71fbfd5f AG |
648 | return r; |
649 | } | |
650 | ||
bbf45ba5 HB |
651 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
652 | struct kvm_mp_state *mp_state) | |
653 | { | |
654 | return -EINVAL; | |
655 | } | |
656 | ||
657 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
658 | struct kvm_mp_state *mp_state) | |
659 | { | |
660 | return -EINVAL; | |
661 | } | |
662 | ||
663 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
664 | unsigned int ioctl, unsigned long arg) | |
665 | { | |
666 | struct kvm_vcpu *vcpu = filp->private_data; | |
667 | void __user *argp = (void __user *)arg; | |
668 | long r; | |
669 | ||
93736624 AK |
670 | switch (ioctl) { |
671 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
672 | struct kvm_interrupt irq; |
673 | r = -EFAULT; | |
674 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 675 | goto out; |
bbf45ba5 | 676 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 677 | goto out; |
bbf45ba5 | 678 | } |
19483d14 | 679 | |
71fbfd5f AG |
680 | case KVM_ENABLE_CAP: |
681 | { | |
682 | struct kvm_enable_cap cap; | |
683 | r = -EFAULT; | |
684 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
685 | goto out; | |
686 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
687 | break; | |
688 | } | |
dc83b8bc | 689 | |
e24ed81f AG |
690 | case KVM_SET_ONE_REG: |
691 | case KVM_GET_ONE_REG: | |
692 | { | |
693 | struct kvm_one_reg reg; | |
694 | r = -EFAULT; | |
695 | if (copy_from_user(®, argp, sizeof(reg))) | |
696 | goto out; | |
697 | if (ioctl == KVM_SET_ONE_REG) | |
698 | r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); | |
699 | else | |
700 | r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); | |
701 | break; | |
702 | } | |
703 | ||
dc83b8bc SW |
704 | #ifdef CONFIG_KVM_E500 |
705 | case KVM_DIRTY_TLB: { | |
706 | struct kvm_dirty_tlb dirty; | |
707 | r = -EFAULT; | |
708 | if (copy_from_user(&dirty, argp, sizeof(dirty))) | |
709 | goto out; | |
710 | r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); | |
711 | break; | |
712 | } | |
713 | #endif | |
714 | ||
bbf45ba5 HB |
715 | default: |
716 | r = -EINVAL; | |
717 | } | |
718 | ||
719 | out: | |
720 | return r; | |
721 | } | |
722 | ||
5b1c1493 CO |
723 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
724 | { | |
725 | return VM_FAULT_SIGBUS; | |
726 | } | |
727 | ||
15711e9c AG |
728 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
729 | { | |
730 | u32 inst_lis = 0x3c000000; | |
731 | u32 inst_ori = 0x60000000; | |
732 | u32 inst_nop = 0x60000000; | |
733 | u32 inst_sc = 0x44000002; | |
734 | u32 inst_imm_mask = 0xffff; | |
735 | ||
736 | /* | |
737 | * The hypercall to get into KVM from within guest context is as | |
738 | * follows: | |
739 | * | |
740 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
741 | * ori r0, KVM_SC_MAGIC_R0@l | |
742 | * sc | |
743 | * nop | |
744 | */ | |
745 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
746 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
747 | pvinfo->hcall[2] = inst_sc; | |
748 | pvinfo->hcall[3] = inst_nop; | |
749 | ||
750 | return 0; | |
751 | } | |
752 | ||
bbf45ba5 HB |
753 | long kvm_arch_vm_ioctl(struct file *filp, |
754 | unsigned int ioctl, unsigned long arg) | |
755 | { | |
15711e9c | 756 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
757 | long r; |
758 | ||
759 | switch (ioctl) { | |
15711e9c AG |
760 | case KVM_PPC_GET_PVINFO: { |
761 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 762 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
763 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
764 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
765 | r = -EFAULT; | |
766 | goto out; | |
767 | } | |
768 | ||
769 | break; | |
770 | } | |
54738c09 DG |
771 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
772 | case KVM_CREATE_SPAPR_TCE: { | |
773 | struct kvm_create_spapr_tce create_tce; | |
774 | struct kvm *kvm = filp->private_data; | |
775 | ||
776 | r = -EFAULT; | |
777 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
778 | goto out; | |
779 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
780 | goto out; | |
781 | } | |
aa04b4cc PM |
782 | |
783 | case KVM_ALLOCATE_RMA: { | |
784 | struct kvm *kvm = filp->private_data; | |
785 | struct kvm_allocate_rma rma; | |
786 | ||
787 | r = kvm_vm_ioctl_allocate_rma(kvm, &rma); | |
788 | if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) | |
789 | r = -EFAULT; | |
790 | break; | |
791 | } | |
54738c09 DG |
792 | #endif /* CONFIG_KVM_BOOK3S_64_HV */ |
793 | ||
bbf45ba5 | 794 | default: |
367e1319 | 795 | r = -ENOTTY; |
bbf45ba5 HB |
796 | } |
797 | ||
15711e9c | 798 | out: |
bbf45ba5 HB |
799 | return r; |
800 | } | |
801 | ||
802 | int kvm_arch_init(void *opaque) | |
803 | { | |
804 | return 0; | |
805 | } | |
806 | ||
807 | void kvm_arch_exit(void) | |
808 | { | |
809 | } |