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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; | |
bf7ca4bd | 82 | #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2) |
a4cd8b23 | 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 | ||
d30f6e48 SW |
117 | #ifdef CONFIG_KVM_BOOKE_HV |
118 | if (!cpu_has_feature(CPU_FTR_EMB_HV)) | |
119 | goto out; | |
120 | #endif | |
121 | ||
af8f38b3 AG |
122 | r = true; |
123 | ||
124 | out: | |
125 | vcpu->arch.sane = r; | |
126 | return r ? 0 : -EINVAL; | |
127 | } | |
128 | ||
bbf45ba5 HB |
129 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) |
130 | { | |
131 | enum emulation_result er; | |
132 | int r; | |
133 | ||
134 | er = kvmppc_emulate_instruction(run, vcpu); | |
135 | switch (er) { | |
136 | case EMULATE_DONE: | |
137 | /* Future optimization: only reload non-volatiles if they were | |
138 | * actually modified. */ | |
139 | r = RESUME_GUEST_NV; | |
140 | break; | |
141 | case EMULATE_DO_MMIO: | |
142 | run->exit_reason = KVM_EXIT_MMIO; | |
143 | /* We must reload nonvolatiles because "update" load/store | |
144 | * instructions modify register state. */ | |
145 | /* Future optimization: only reload non-volatiles if they were | |
146 | * actually modified. */ | |
147 | r = RESUME_HOST_NV; | |
148 | break; | |
149 | case EMULATE_FAIL: | |
150 | /* XXX Deliver Program interrupt to guest. */ | |
151 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, | |
c7f38f46 | 152 | kvmppc_get_last_inst(vcpu)); |
bbf45ba5 HB |
153 | r = RESUME_HOST; |
154 | break; | |
155 | default: | |
156 | BUG(); | |
157 | } | |
158 | ||
159 | return r; | |
160 | } | |
161 | ||
10474ae8 | 162 | int kvm_arch_hardware_enable(void *garbage) |
bbf45ba5 | 163 | { |
10474ae8 | 164 | return 0; |
bbf45ba5 HB |
165 | } |
166 | ||
167 | void kvm_arch_hardware_disable(void *garbage) | |
168 | { | |
169 | } | |
170 | ||
171 | int kvm_arch_hardware_setup(void) | |
172 | { | |
173 | return 0; | |
174 | } | |
175 | ||
176 | void kvm_arch_hardware_unsetup(void) | |
177 | { | |
178 | } | |
179 | ||
180 | void kvm_arch_check_processor_compat(void *rtn) | |
181 | { | |
9dd921cf | 182 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
bbf45ba5 HB |
183 | } |
184 | ||
e08b9637 | 185 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
bbf45ba5 | 186 | { |
e08b9637 CO |
187 | if (type) |
188 | return -EINVAL; | |
189 | ||
f9e0554d | 190 | return kvmppc_core_init_vm(kvm); |
bbf45ba5 HB |
191 | } |
192 | ||
d89f5eff | 193 | void kvm_arch_destroy_vm(struct kvm *kvm) |
bbf45ba5 HB |
194 | { |
195 | unsigned int i; | |
988a2cae | 196 | struct kvm_vcpu *vcpu; |
bbf45ba5 | 197 | |
988a2cae GN |
198 | kvm_for_each_vcpu(i, vcpu, kvm) |
199 | kvm_arch_vcpu_free(vcpu); | |
200 | ||
201 | mutex_lock(&kvm->lock); | |
202 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) | |
203 | kvm->vcpus[i] = NULL; | |
204 | ||
205 | atomic_set(&kvm->online_vcpus, 0); | |
f9e0554d PM |
206 | |
207 | kvmppc_core_destroy_vm(kvm); | |
208 | ||
988a2cae | 209 | mutex_unlock(&kvm->lock); |
bbf45ba5 HB |
210 | } |
211 | ||
ad8ba2cd SY |
212 | void kvm_arch_sync_events(struct kvm *kvm) |
213 | { | |
214 | } | |
215 | ||
bbf45ba5 HB |
216 | int kvm_dev_ioctl_check_extension(long ext) |
217 | { | |
218 | int r; | |
219 | ||
220 | switch (ext) { | |
5ce941ee SW |
221 | #ifdef CONFIG_BOOKE |
222 | case KVM_CAP_PPC_BOOKE_SREGS: | |
223 | #else | |
e15a1137 | 224 | case KVM_CAP_PPC_SEGSTATE: |
1022fc3d | 225 | case KVM_CAP_PPC_HIOR: |
930b412a | 226 | case KVM_CAP_PPC_PAPR: |
5ce941ee | 227 | #endif |
18978768 | 228 | case KVM_CAP_PPC_UNSET_IRQ: |
7b4203e8 | 229 | case KVM_CAP_PPC_IRQ_LEVEL: |
71fbfd5f | 230 | case KVM_CAP_ENABLE_CAP: |
e24ed81f | 231 | case KVM_CAP_ONE_REG: |
de56a948 PM |
232 | r = 1; |
233 | break; | |
234 | #ifndef CONFIG_KVM_BOOK3S_64_HV | |
235 | case KVM_CAP_PPC_PAIRED_SINGLES: | |
ad0a048b | 236 | case KVM_CAP_PPC_OSI: |
15711e9c | 237 | case KVM_CAP_PPC_GET_PVINFO: |
bf7ca4bd | 238 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
239 | case KVM_CAP_SW_TLB: |
240 | #endif | |
e15a1137 AG |
241 | r = 1; |
242 | break; | |
588968b6 LV |
243 | case KVM_CAP_COALESCED_MMIO: |
244 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
245 | break; | |
54738c09 | 246 | #endif |
f31e65e1 | 247 | #ifdef CONFIG_PPC_BOOK3S_64 |
54738c09 DG |
248 | case KVM_CAP_SPAPR_TCE: |
249 | r = 1; | |
250 | break; | |
f31e65e1 BH |
251 | #endif /* CONFIG_PPC_BOOK3S_64 */ |
252 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
371fefd6 PM |
253 | case KVM_CAP_PPC_SMT: |
254 | r = threads_per_core; | |
255 | break; | |
aa04b4cc PM |
256 | case KVM_CAP_PPC_RMA: |
257 | r = 1; | |
9e368f29 PM |
258 | /* PPC970 requires an RMA */ |
259 | if (cpu_has_feature(CPU_FTR_ARCH_201)) | |
260 | r = 2; | |
aa04b4cc | 261 | break; |
342d3db7 PM |
262 | case KVM_CAP_SYNC_MMU: |
263 | r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0; | |
264 | break; | |
de56a948 | 265 | #endif |
b5434032 ME |
266 | case KVM_CAP_NR_VCPUS: |
267 | /* | |
268 | * Recommending a number of CPUs is somewhat arbitrary; we | |
269 | * return the number of present CPUs for -HV (since a host | |
270 | * will have secondary threads "offline"), and for other KVM | |
271 | * implementations just count online CPUs. | |
272 | */ | |
273 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
274 | r = num_present_cpus(); | |
275 | #else | |
276 | r = num_online_cpus(); | |
277 | #endif | |
278 | break; | |
279 | case KVM_CAP_MAX_VCPUS: | |
280 | r = KVM_MAX_VCPUS; | |
281 | break; | |
5b74716e BH |
282 | #ifdef CONFIG_PPC_BOOK3S_64 |
283 | case KVM_CAP_PPC_GET_SMMU_INFO: | |
284 | r = 1; | |
285 | break; | |
286 | #endif | |
bbf45ba5 HB |
287 | default: |
288 | r = 0; | |
289 | break; | |
290 | } | |
291 | return r; | |
292 | ||
293 | } | |
294 | ||
295 | long kvm_arch_dev_ioctl(struct file *filp, | |
296 | unsigned int ioctl, unsigned long arg) | |
297 | { | |
298 | return -EINVAL; | |
299 | } | |
300 | ||
db3fe4eb TY |
301 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
302 | struct kvm_memory_slot *dont) | |
303 | { | |
304 | } | |
305 | ||
306 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages) | |
307 | { | |
308 | return 0; | |
309 | } | |
310 | ||
f7784b8e MT |
311 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
312 | struct kvm_memory_slot *memslot, | |
313 | struct kvm_memory_slot old, | |
314 | struct kvm_userspace_memory_region *mem, | |
315 | int user_alloc) | |
bbf45ba5 | 316 | { |
f9e0554d | 317 | return kvmppc_core_prepare_memory_region(kvm, mem); |
bbf45ba5 HB |
318 | } |
319 | ||
f7784b8e MT |
320 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
321 | struct kvm_userspace_memory_region *mem, | |
322 | struct kvm_memory_slot old, | |
323 | int user_alloc) | |
324 | { | |
f9e0554d | 325 | kvmppc_core_commit_memory_region(kvm, mem); |
f7784b8e MT |
326 | } |
327 | ||
328 | ||
34d4cb8f MT |
329 | void kvm_arch_flush_shadow(struct kvm *kvm) |
330 | { | |
331 | } | |
332 | ||
bbf45ba5 HB |
333 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
334 | { | |
73e75b41 HB |
335 | struct kvm_vcpu *vcpu; |
336 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
03cdab53 ME |
337 | if (!IS_ERR(vcpu)) { |
338 | vcpu->arch.wqp = &vcpu->wq; | |
06056bfb | 339 | kvmppc_create_vcpu_debugfs(vcpu, id); |
03cdab53 | 340 | } |
73e75b41 | 341 | return vcpu; |
bbf45ba5 HB |
342 | } |
343 | ||
344 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) | |
345 | { | |
a595405d AG |
346 | /* Make sure we're not using the vcpu anymore */ |
347 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
348 | tasklet_kill(&vcpu->arch.tasklet); | |
349 | ||
73e75b41 | 350 | kvmppc_remove_vcpu_debugfs(vcpu); |
db93f574 | 351 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
352 | } |
353 | ||
354 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
355 | { | |
356 | kvm_arch_vcpu_free(vcpu); | |
357 | } | |
358 | ||
359 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
360 | { | |
9dd921cf | 361 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
362 | } |
363 | ||
544c6761 AG |
364 | /* |
365 | * low level hrtimer wake routine. Because this runs in hardirq context | |
366 | * we schedule a tasklet to do the real work. | |
367 | */ | |
368 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
369 | { | |
370 | struct kvm_vcpu *vcpu; | |
371 | ||
372 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
373 | tasklet_schedule(&vcpu->arch.tasklet); | |
374 | ||
375 | return HRTIMER_NORESTART; | |
376 | } | |
377 | ||
bbf45ba5 HB |
378 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
379 | { | |
544c6761 AG |
380 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
381 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
382 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 383 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 384 | |
09000adb BB |
385 | #ifdef CONFIG_KVM_EXIT_TIMING |
386 | mutex_init(&vcpu->arch.exit_timing_lock); | |
387 | #endif | |
388 | ||
bbf45ba5 HB |
389 | return 0; |
390 | } | |
391 | ||
392 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
393 | { | |
ecc0981f | 394 | kvmppc_mmu_destroy(vcpu); |
bbf45ba5 HB |
395 | } |
396 | ||
397 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
398 | { | |
eab17672 SW |
399 | #ifdef CONFIG_BOOKE |
400 | /* | |
401 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
402 | * be used by the guest. | |
403 | * | |
404 | * On non-booke this is associated with Altivec and | |
405 | * is handled by code in book3s.c. | |
406 | */ | |
407 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
408 | #endif | |
9dd921cf | 409 | kvmppc_core_vcpu_load(vcpu, cpu); |
de56a948 | 410 | vcpu->cpu = smp_processor_id(); |
bbf45ba5 HB |
411 | } |
412 | ||
413 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
414 | { | |
9dd921cf | 415 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
416 | #ifdef CONFIG_BOOKE |
417 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
418 | #endif | |
de56a948 | 419 | vcpu->cpu = -1; |
bbf45ba5 HB |
420 | } |
421 | ||
d0bfb940 | 422 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
f5d0906b | 423 | struct kvm_guest_debug *dbg) |
bbf45ba5 | 424 | { |
f5d0906b | 425 | return -EINVAL; |
bbf45ba5 HB |
426 | } |
427 | ||
428 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, | |
429 | struct kvm_run *run) | |
430 | { | |
8e5b26b5 | 431 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
432 | } |
433 | ||
434 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
435 | struct kvm_run *run) | |
436 | { | |
69b61833 | 437 | u64 uninitialized_var(gpr); |
bbf45ba5 | 438 | |
8e5b26b5 | 439 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
440 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
441 | return; | |
442 | } | |
443 | ||
444 | if (vcpu->arch.mmio_is_bigendian) { | |
445 | switch (run->mmio.len) { | |
b104d066 | 446 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
447 | case 4: gpr = *(u32 *)run->mmio.data; break; |
448 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
449 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
450 | } |
451 | } else { | |
452 | /* Convert BE data from userland back to LE. */ | |
453 | switch (run->mmio.len) { | |
8e5b26b5 AG |
454 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
455 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
456 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
457 | } |
458 | } | |
8e5b26b5 | 459 | |
3587d534 AG |
460 | if (vcpu->arch.mmio_sign_extend) { |
461 | switch (run->mmio.len) { | |
462 | #ifdef CONFIG_PPC64 | |
463 | case 4: | |
464 | gpr = (s64)(s32)gpr; | |
465 | break; | |
466 | #endif | |
467 | case 2: | |
468 | gpr = (s64)(s16)gpr; | |
469 | break; | |
470 | case 1: | |
471 | gpr = (s64)(s8)gpr; | |
472 | break; | |
473 | } | |
474 | } | |
475 | ||
8e5b26b5 | 476 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 | 477 | |
b3c5d3c2 AG |
478 | switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) { |
479 | case KVM_MMIO_REG_GPR: | |
b104d066 AG |
480 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
481 | break; | |
b3c5d3c2 AG |
482 | case KVM_MMIO_REG_FPR: |
483 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 484 | break; |
287d5611 | 485 | #ifdef CONFIG_PPC_BOOK3S |
b3c5d3c2 AG |
486 | case KVM_MMIO_REG_QPR: |
487 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 488 | break; |
b3c5d3c2 AG |
489 | case KVM_MMIO_REG_FQPR: |
490 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
491 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 492 | break; |
287d5611 | 493 | #endif |
b104d066 AG |
494 | default: |
495 | BUG(); | |
496 | } | |
bbf45ba5 HB |
497 | } |
498 | ||
499 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
500 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
501 | { | |
502 | if (bytes > sizeof(run->mmio.data)) { | |
503 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
504 | run->mmio.len); | |
505 | } | |
506 | ||
507 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
508 | run->mmio.len = bytes; | |
509 | run->mmio.is_write = 0; | |
510 | ||
511 | vcpu->arch.io_gpr = rt; | |
512 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
513 | vcpu->mmio_needed = 1; | |
514 | vcpu->mmio_is_write = 0; | |
3587d534 | 515 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 HB |
516 | |
517 | return EMULATE_DO_MMIO; | |
518 | } | |
519 | ||
3587d534 AG |
520 | /* Same as above, but sign extends */ |
521 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
522 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
523 | { | |
524 | int r; | |
525 | ||
526 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); | |
527 | vcpu->arch.mmio_sign_extend = 1; | |
528 | ||
529 | return r; | |
530 | } | |
531 | ||
bbf45ba5 | 532 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 533 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
534 | { |
535 | void *data = run->mmio.data; | |
536 | ||
537 | if (bytes > sizeof(run->mmio.data)) { | |
538 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
539 | run->mmio.len); | |
540 | } | |
541 | ||
542 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
543 | run->mmio.len = bytes; | |
544 | run->mmio.is_write = 1; | |
545 | vcpu->mmio_needed = 1; | |
546 | vcpu->mmio_is_write = 1; | |
547 | ||
548 | /* Store the value at the lowest bytes in 'data'. */ | |
549 | if (is_bigendian) { | |
550 | switch (bytes) { | |
b104d066 | 551 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
552 | case 4: *(u32 *)data = val; break; |
553 | case 2: *(u16 *)data = val; break; | |
554 | case 1: *(u8 *)data = val; break; | |
555 | } | |
556 | } else { | |
557 | /* Store LE value into 'data'. */ | |
558 | switch (bytes) { | |
559 | case 4: st_le32(data, val); break; | |
560 | case 2: st_le16(data, val); break; | |
561 | case 1: *(u8 *)data = val; break; | |
562 | } | |
563 | } | |
564 | ||
565 | return EMULATE_DO_MMIO; | |
566 | } | |
567 | ||
568 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
569 | { | |
570 | int r; | |
571 | sigset_t sigsaved; | |
572 | ||
573 | if (vcpu->sigset_active) | |
574 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
575 | ||
576 | if (vcpu->mmio_needed) { | |
577 | if (!vcpu->mmio_is_write) | |
578 | kvmppc_complete_mmio_load(vcpu, run); | |
579 | vcpu->mmio_needed = 0; | |
580 | } else if (vcpu->arch.dcr_needed) { | |
581 | if (!vcpu->arch.dcr_is_write) | |
582 | kvmppc_complete_dcr_load(vcpu, run); | |
583 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
584 | } else if (vcpu->arch.osi_needed) { |
585 | u64 *gprs = run->osi.gprs; | |
586 | int i; | |
587 | ||
588 | for (i = 0; i < 32; i++) | |
589 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
590 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
591 | } else if (vcpu->arch.hcall_needed) { |
592 | int i; | |
593 | ||
594 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
595 | for (i = 0; i < 9; ++i) | |
596 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
597 | vcpu->arch.hcall_needed = 0; | |
bbf45ba5 HB |
598 | } |
599 | ||
df6909e5 | 600 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
601 | |
602 | if (vcpu->sigset_active) | |
603 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
604 | ||
605 | return r; | |
606 | } | |
607 | ||
608 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
609 | { | |
19ccb76a | 610 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
18978768 | 611 | kvmppc_core_dequeue_external(vcpu, irq); |
19ccb76a PM |
612 | return 0; |
613 | } | |
614 | ||
615 | kvmppc_core_queue_external(vcpu, irq); | |
b6d33834 | 616 | |
dfd4d47e | 617 | kvm_vcpu_kick(vcpu); |
45c5eb67 | 618 | |
bbf45ba5 HB |
619 | return 0; |
620 | } | |
621 | ||
71fbfd5f AG |
622 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
623 | struct kvm_enable_cap *cap) | |
624 | { | |
625 | int r; | |
626 | ||
627 | if (cap->flags) | |
628 | return -EINVAL; | |
629 | ||
630 | switch (cap->cap) { | |
ad0a048b AG |
631 | case KVM_CAP_PPC_OSI: |
632 | r = 0; | |
633 | vcpu->arch.osi_enabled = true; | |
634 | break; | |
930b412a AG |
635 | case KVM_CAP_PPC_PAPR: |
636 | r = 0; | |
637 | vcpu->arch.papr_enabled = true; | |
638 | break; | |
bf7ca4bd | 639 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
640 | case KVM_CAP_SW_TLB: { |
641 | struct kvm_config_tlb cfg; | |
642 | void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; | |
643 | ||
644 | r = -EFAULT; | |
645 | if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) | |
646 | break; | |
647 | ||
648 | r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); | |
649 | break; | |
650 | } | |
651 | #endif | |
71fbfd5f AG |
652 | default: |
653 | r = -EINVAL; | |
654 | break; | |
655 | } | |
656 | ||
af8f38b3 AG |
657 | if (!r) |
658 | r = kvmppc_sanity_check(vcpu); | |
659 | ||
71fbfd5f AG |
660 | return r; |
661 | } | |
662 | ||
bbf45ba5 HB |
663 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
664 | struct kvm_mp_state *mp_state) | |
665 | { | |
666 | return -EINVAL; | |
667 | } | |
668 | ||
669 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
670 | struct kvm_mp_state *mp_state) | |
671 | { | |
672 | return -EINVAL; | |
673 | } | |
674 | ||
675 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
676 | unsigned int ioctl, unsigned long arg) | |
677 | { | |
678 | struct kvm_vcpu *vcpu = filp->private_data; | |
679 | void __user *argp = (void __user *)arg; | |
680 | long r; | |
681 | ||
93736624 AK |
682 | switch (ioctl) { |
683 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
684 | struct kvm_interrupt irq; |
685 | r = -EFAULT; | |
686 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 687 | goto out; |
bbf45ba5 | 688 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 689 | goto out; |
bbf45ba5 | 690 | } |
19483d14 | 691 | |
71fbfd5f AG |
692 | case KVM_ENABLE_CAP: |
693 | { | |
694 | struct kvm_enable_cap cap; | |
695 | r = -EFAULT; | |
696 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
697 | goto out; | |
698 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
699 | break; | |
700 | } | |
dc83b8bc | 701 | |
e24ed81f AG |
702 | case KVM_SET_ONE_REG: |
703 | case KVM_GET_ONE_REG: | |
704 | { | |
705 | struct kvm_one_reg reg; | |
706 | r = -EFAULT; | |
707 | if (copy_from_user(®, argp, sizeof(reg))) | |
708 | goto out; | |
709 | if (ioctl == KVM_SET_ONE_REG) | |
710 | r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); | |
711 | else | |
712 | r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); | |
713 | break; | |
714 | } | |
715 | ||
bf7ca4bd | 716 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
717 | case KVM_DIRTY_TLB: { |
718 | struct kvm_dirty_tlb dirty; | |
719 | r = -EFAULT; | |
720 | if (copy_from_user(&dirty, argp, sizeof(dirty))) | |
721 | goto out; | |
722 | r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); | |
723 | break; | |
724 | } | |
725 | #endif | |
bbf45ba5 HB |
726 | default: |
727 | r = -EINVAL; | |
728 | } | |
729 | ||
730 | out: | |
731 | return r; | |
732 | } | |
733 | ||
5b1c1493 CO |
734 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
735 | { | |
736 | return VM_FAULT_SIGBUS; | |
737 | } | |
738 | ||
15711e9c AG |
739 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
740 | { | |
741 | u32 inst_lis = 0x3c000000; | |
742 | u32 inst_ori = 0x60000000; | |
743 | u32 inst_nop = 0x60000000; | |
744 | u32 inst_sc = 0x44000002; | |
745 | u32 inst_imm_mask = 0xffff; | |
746 | ||
747 | /* | |
748 | * The hypercall to get into KVM from within guest context is as | |
749 | * follows: | |
750 | * | |
751 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
752 | * ori r0, KVM_SC_MAGIC_R0@l | |
753 | * sc | |
754 | * nop | |
755 | */ | |
756 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
757 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
758 | pvinfo->hcall[2] = inst_sc; | |
759 | pvinfo->hcall[3] = inst_nop; | |
760 | ||
761 | return 0; | |
762 | } | |
763 | ||
bbf45ba5 HB |
764 | long kvm_arch_vm_ioctl(struct file *filp, |
765 | unsigned int ioctl, unsigned long arg) | |
766 | { | |
15711e9c | 767 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
768 | long r; |
769 | ||
770 | switch (ioctl) { | |
15711e9c AG |
771 | case KVM_PPC_GET_PVINFO: { |
772 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 773 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
774 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
775 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
776 | r = -EFAULT; | |
777 | goto out; | |
778 | } | |
779 | ||
780 | break; | |
781 | } | |
f31e65e1 | 782 | #ifdef CONFIG_PPC_BOOK3S_64 |
54738c09 DG |
783 | case KVM_CREATE_SPAPR_TCE: { |
784 | struct kvm_create_spapr_tce create_tce; | |
785 | struct kvm *kvm = filp->private_data; | |
786 | ||
787 | r = -EFAULT; | |
788 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
789 | goto out; | |
790 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
791 | goto out; | |
792 | } | |
f31e65e1 | 793 | #endif /* CONFIG_PPC_BOOK3S_64 */ |
aa04b4cc | 794 | |
f31e65e1 | 795 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
aa04b4cc PM |
796 | case KVM_ALLOCATE_RMA: { |
797 | struct kvm *kvm = filp->private_data; | |
798 | struct kvm_allocate_rma rma; | |
799 | ||
800 | r = kvm_vm_ioctl_allocate_rma(kvm, &rma); | |
801 | if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) | |
802 | r = -EFAULT; | |
803 | break; | |
804 | } | |
54738c09 DG |
805 | #endif /* CONFIG_KVM_BOOK3S_64_HV */ |
806 | ||
5b74716e BH |
807 | #ifdef CONFIG_PPC_BOOK3S_64 |
808 | case KVM_PPC_GET_SMMU_INFO: { | |
809 | struct kvm *kvm = filp->private_data; | |
810 | struct kvm_ppc_smmu_info info; | |
811 | ||
812 | memset(&info, 0, sizeof(info)); | |
813 | r = kvm_vm_ioctl_get_smmu_info(kvm, &info); | |
814 | if (r >= 0 && copy_to_user(argp, &info, sizeof(info))) | |
815 | r = -EFAULT; | |
816 | break; | |
817 | } | |
818 | #endif /* CONFIG_PPC_BOOK3S_64 */ | |
bbf45ba5 | 819 | default: |
367e1319 | 820 | r = -ENOTTY; |
bbf45ba5 HB |
821 | } |
822 | ||
15711e9c | 823 | out: |
bbf45ba5 HB |
824 | return r; |
825 | } | |
826 | ||
043cc4d7 SW |
827 | static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)]; |
828 | static unsigned long nr_lpids; | |
829 | ||
830 | long kvmppc_alloc_lpid(void) | |
831 | { | |
832 | long lpid; | |
833 | ||
834 | do { | |
835 | lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS); | |
836 | if (lpid >= nr_lpids) { | |
837 | pr_err("%s: No LPIDs free\n", __func__); | |
838 | return -ENOMEM; | |
839 | } | |
840 | } while (test_and_set_bit(lpid, lpid_inuse)); | |
841 | ||
842 | return lpid; | |
843 | } | |
844 | ||
845 | void kvmppc_claim_lpid(long lpid) | |
846 | { | |
847 | set_bit(lpid, lpid_inuse); | |
848 | } | |
849 | ||
850 | void kvmppc_free_lpid(long lpid) | |
851 | { | |
852 | clear_bit(lpid, lpid_inuse); | |
853 | } | |
854 | ||
855 | void kvmppc_init_lpid(unsigned long nr_lpids_param) | |
856 | { | |
857 | nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param); | |
858 | memset(lpid_inuse, 0, sizeof(lpid_inuse)); | |
859 | } | |
860 | ||
bbf45ba5 HB |
861 | int kvm_arch_init(void *opaque) |
862 | { | |
863 | return 0; | |
864 | } | |
865 | ||
866 | void kvm_arch_exit(void) | |
867 | { | |
868 | } |