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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 | ||
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: |
73196cd3 | 238 | #if defined(CONFIG_KVM_E500) || 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 DG |
246 | #endif |
247 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
248 | case KVM_CAP_SPAPR_TCE: | |
249 | r = 1; | |
250 | break; | |
371fefd6 PM |
251 | case KVM_CAP_PPC_SMT: |
252 | r = threads_per_core; | |
253 | break; | |
aa04b4cc PM |
254 | case KVM_CAP_PPC_RMA: |
255 | r = 1; | |
9e368f29 PM |
256 | /* PPC970 requires an RMA */ |
257 | if (cpu_has_feature(CPU_FTR_ARCH_201)) | |
258 | r = 2; | |
aa04b4cc | 259 | break; |
342d3db7 PM |
260 | case KVM_CAP_SYNC_MMU: |
261 | r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0; | |
262 | break; | |
de56a948 | 263 | #endif |
b5434032 ME |
264 | case KVM_CAP_NR_VCPUS: |
265 | /* | |
266 | * Recommending a number of CPUs is somewhat arbitrary; we | |
267 | * return the number of present CPUs for -HV (since a host | |
268 | * will have secondary threads "offline"), and for other KVM | |
269 | * implementations just count online CPUs. | |
270 | */ | |
271 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
272 | r = num_present_cpus(); | |
273 | #else | |
274 | r = num_online_cpus(); | |
275 | #endif | |
276 | break; | |
277 | case KVM_CAP_MAX_VCPUS: | |
278 | r = KVM_MAX_VCPUS; | |
279 | break; | |
bbf45ba5 HB |
280 | default: |
281 | r = 0; | |
282 | break; | |
283 | } | |
284 | return r; | |
285 | ||
286 | } | |
287 | ||
288 | long kvm_arch_dev_ioctl(struct file *filp, | |
289 | unsigned int ioctl, unsigned long arg) | |
290 | { | |
291 | return -EINVAL; | |
292 | } | |
293 | ||
db3fe4eb TY |
294 | void kvm_arch_free_memslot(struct kvm_memory_slot *free, |
295 | struct kvm_memory_slot *dont) | |
296 | { | |
297 | } | |
298 | ||
299 | int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages) | |
300 | { | |
301 | return 0; | |
302 | } | |
303 | ||
f7784b8e MT |
304 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
305 | struct kvm_memory_slot *memslot, | |
306 | struct kvm_memory_slot old, | |
307 | struct kvm_userspace_memory_region *mem, | |
308 | int user_alloc) | |
bbf45ba5 | 309 | { |
f9e0554d | 310 | return kvmppc_core_prepare_memory_region(kvm, mem); |
bbf45ba5 HB |
311 | } |
312 | ||
f7784b8e MT |
313 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
314 | struct kvm_userspace_memory_region *mem, | |
315 | struct kvm_memory_slot old, | |
316 | int user_alloc) | |
317 | { | |
f9e0554d | 318 | kvmppc_core_commit_memory_region(kvm, mem); |
f7784b8e MT |
319 | } |
320 | ||
321 | ||
34d4cb8f MT |
322 | void kvm_arch_flush_shadow(struct kvm *kvm) |
323 | { | |
324 | } | |
325 | ||
bbf45ba5 HB |
326 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
327 | { | |
73e75b41 HB |
328 | struct kvm_vcpu *vcpu; |
329 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
03cdab53 ME |
330 | if (!IS_ERR(vcpu)) { |
331 | vcpu->arch.wqp = &vcpu->wq; | |
06056bfb | 332 | kvmppc_create_vcpu_debugfs(vcpu, id); |
03cdab53 | 333 | } |
73e75b41 | 334 | return vcpu; |
bbf45ba5 HB |
335 | } |
336 | ||
337 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) | |
338 | { | |
a595405d AG |
339 | /* Make sure we're not using the vcpu anymore */ |
340 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
341 | tasklet_kill(&vcpu->arch.tasklet); | |
342 | ||
73e75b41 | 343 | kvmppc_remove_vcpu_debugfs(vcpu); |
db93f574 | 344 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
345 | } |
346 | ||
347 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
348 | { | |
349 | kvm_arch_vcpu_free(vcpu); | |
350 | } | |
351 | ||
352 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
353 | { | |
9dd921cf | 354 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
355 | } |
356 | ||
544c6761 AG |
357 | /* |
358 | * low level hrtimer wake routine. Because this runs in hardirq context | |
359 | * we schedule a tasklet to do the real work. | |
360 | */ | |
361 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
362 | { | |
363 | struct kvm_vcpu *vcpu; | |
364 | ||
365 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
366 | tasklet_schedule(&vcpu->arch.tasklet); | |
367 | ||
368 | return HRTIMER_NORESTART; | |
369 | } | |
370 | ||
bbf45ba5 HB |
371 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
372 | { | |
544c6761 AG |
373 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
374 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
375 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 376 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 377 | |
09000adb BB |
378 | #ifdef CONFIG_KVM_EXIT_TIMING |
379 | mutex_init(&vcpu->arch.exit_timing_lock); | |
380 | #endif | |
381 | ||
bbf45ba5 HB |
382 | return 0; |
383 | } | |
384 | ||
385 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
386 | { | |
ecc0981f | 387 | kvmppc_mmu_destroy(vcpu); |
bbf45ba5 HB |
388 | } |
389 | ||
390 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
391 | { | |
eab17672 SW |
392 | #ifdef CONFIG_BOOKE |
393 | /* | |
394 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
395 | * be used by the guest. | |
396 | * | |
397 | * On non-booke this is associated with Altivec and | |
398 | * is handled by code in book3s.c. | |
399 | */ | |
400 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
401 | #endif | |
9dd921cf | 402 | kvmppc_core_vcpu_load(vcpu, cpu); |
de56a948 | 403 | vcpu->cpu = smp_processor_id(); |
bbf45ba5 HB |
404 | } |
405 | ||
406 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
407 | { | |
9dd921cf | 408 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
409 | #ifdef CONFIG_BOOKE |
410 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
411 | #endif | |
de56a948 | 412 | vcpu->cpu = -1; |
bbf45ba5 HB |
413 | } |
414 | ||
d0bfb940 | 415 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
f5d0906b | 416 | struct kvm_guest_debug *dbg) |
bbf45ba5 | 417 | { |
f5d0906b | 418 | return -EINVAL; |
bbf45ba5 HB |
419 | } |
420 | ||
421 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, | |
422 | struct kvm_run *run) | |
423 | { | |
8e5b26b5 | 424 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
425 | } |
426 | ||
427 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
428 | struct kvm_run *run) | |
429 | { | |
69b61833 | 430 | u64 uninitialized_var(gpr); |
bbf45ba5 | 431 | |
8e5b26b5 | 432 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
433 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
434 | return; | |
435 | } | |
436 | ||
437 | if (vcpu->arch.mmio_is_bigendian) { | |
438 | switch (run->mmio.len) { | |
b104d066 | 439 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
440 | case 4: gpr = *(u32 *)run->mmio.data; break; |
441 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
442 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
443 | } |
444 | } else { | |
445 | /* Convert BE data from userland back to LE. */ | |
446 | switch (run->mmio.len) { | |
8e5b26b5 AG |
447 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
448 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
449 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
450 | } |
451 | } | |
8e5b26b5 | 452 | |
3587d534 AG |
453 | if (vcpu->arch.mmio_sign_extend) { |
454 | switch (run->mmio.len) { | |
455 | #ifdef CONFIG_PPC64 | |
456 | case 4: | |
457 | gpr = (s64)(s32)gpr; | |
458 | break; | |
459 | #endif | |
460 | case 2: | |
461 | gpr = (s64)(s16)gpr; | |
462 | break; | |
463 | case 1: | |
464 | gpr = (s64)(s8)gpr; | |
465 | break; | |
466 | } | |
467 | } | |
468 | ||
8e5b26b5 | 469 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 | 470 | |
b3c5d3c2 AG |
471 | switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) { |
472 | case KVM_MMIO_REG_GPR: | |
b104d066 AG |
473 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
474 | break; | |
b3c5d3c2 AG |
475 | case KVM_MMIO_REG_FPR: |
476 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 477 | break; |
287d5611 | 478 | #ifdef CONFIG_PPC_BOOK3S |
b3c5d3c2 AG |
479 | case KVM_MMIO_REG_QPR: |
480 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 481 | break; |
b3c5d3c2 AG |
482 | case KVM_MMIO_REG_FQPR: |
483 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
484 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; | |
b104d066 | 485 | break; |
287d5611 | 486 | #endif |
b104d066 AG |
487 | default: |
488 | BUG(); | |
489 | } | |
bbf45ba5 HB |
490 | } |
491 | ||
492 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
493 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
494 | { | |
495 | if (bytes > sizeof(run->mmio.data)) { | |
496 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
497 | run->mmio.len); | |
498 | } | |
499 | ||
500 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
501 | run->mmio.len = bytes; | |
502 | run->mmio.is_write = 0; | |
503 | ||
504 | vcpu->arch.io_gpr = rt; | |
505 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
506 | vcpu->mmio_needed = 1; | |
507 | vcpu->mmio_is_write = 0; | |
3587d534 | 508 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 HB |
509 | |
510 | return EMULATE_DO_MMIO; | |
511 | } | |
512 | ||
3587d534 AG |
513 | /* Same as above, but sign extends */ |
514 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
515 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
516 | { | |
517 | int r; | |
518 | ||
519 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); | |
520 | vcpu->arch.mmio_sign_extend = 1; | |
521 | ||
522 | return r; | |
523 | } | |
524 | ||
bbf45ba5 | 525 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 526 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
527 | { |
528 | void *data = run->mmio.data; | |
529 | ||
530 | if (bytes > sizeof(run->mmio.data)) { | |
531 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
532 | run->mmio.len); | |
533 | } | |
534 | ||
535 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
536 | run->mmio.len = bytes; | |
537 | run->mmio.is_write = 1; | |
538 | vcpu->mmio_needed = 1; | |
539 | vcpu->mmio_is_write = 1; | |
540 | ||
541 | /* Store the value at the lowest bytes in 'data'. */ | |
542 | if (is_bigendian) { | |
543 | switch (bytes) { | |
b104d066 | 544 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
545 | case 4: *(u32 *)data = val; break; |
546 | case 2: *(u16 *)data = val; break; | |
547 | case 1: *(u8 *)data = val; break; | |
548 | } | |
549 | } else { | |
550 | /* Store LE value into 'data'. */ | |
551 | switch (bytes) { | |
552 | case 4: st_le32(data, val); break; | |
553 | case 2: st_le16(data, val); break; | |
554 | case 1: *(u8 *)data = val; break; | |
555 | } | |
556 | } | |
557 | ||
558 | return EMULATE_DO_MMIO; | |
559 | } | |
560 | ||
561 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
562 | { | |
563 | int r; | |
564 | sigset_t sigsaved; | |
565 | ||
566 | if (vcpu->sigset_active) | |
567 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
568 | ||
569 | if (vcpu->mmio_needed) { | |
570 | if (!vcpu->mmio_is_write) | |
571 | kvmppc_complete_mmio_load(vcpu, run); | |
572 | vcpu->mmio_needed = 0; | |
573 | } else if (vcpu->arch.dcr_needed) { | |
574 | if (!vcpu->arch.dcr_is_write) | |
575 | kvmppc_complete_dcr_load(vcpu, run); | |
576 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
577 | } else if (vcpu->arch.osi_needed) { |
578 | u64 *gprs = run->osi.gprs; | |
579 | int i; | |
580 | ||
581 | for (i = 0; i < 32; i++) | |
582 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
583 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
584 | } else if (vcpu->arch.hcall_needed) { |
585 | int i; | |
586 | ||
587 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
588 | for (i = 0; i < 9; ++i) | |
589 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
590 | vcpu->arch.hcall_needed = 0; | |
bbf45ba5 HB |
591 | } |
592 | ||
df6909e5 | 593 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
594 | |
595 | if (vcpu->sigset_active) | |
596 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
597 | ||
598 | return r; | |
599 | } | |
600 | ||
601 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
602 | { | |
19ccb76a | 603 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
18978768 | 604 | kvmppc_core_dequeue_external(vcpu, irq); |
19ccb76a PM |
605 | return 0; |
606 | } | |
607 | ||
608 | kvmppc_core_queue_external(vcpu, irq); | |
b6d33834 | 609 | |
dfd4d47e | 610 | kvm_vcpu_kick(vcpu); |
45c5eb67 | 611 | |
bbf45ba5 HB |
612 | return 0; |
613 | } | |
614 | ||
71fbfd5f AG |
615 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
616 | struct kvm_enable_cap *cap) | |
617 | { | |
618 | int r; | |
619 | ||
620 | if (cap->flags) | |
621 | return -EINVAL; | |
622 | ||
623 | switch (cap->cap) { | |
ad0a048b AG |
624 | case KVM_CAP_PPC_OSI: |
625 | r = 0; | |
626 | vcpu->arch.osi_enabled = true; | |
627 | break; | |
930b412a AG |
628 | case KVM_CAP_PPC_PAPR: |
629 | r = 0; | |
630 | vcpu->arch.papr_enabled = true; | |
631 | break; | |
73196cd3 | 632 | #if defined(CONFIG_KVM_E500) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
633 | case KVM_CAP_SW_TLB: { |
634 | struct kvm_config_tlb cfg; | |
635 | void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; | |
636 | ||
637 | r = -EFAULT; | |
638 | if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) | |
639 | break; | |
640 | ||
641 | r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); | |
642 | break; | |
643 | } | |
644 | #endif | |
71fbfd5f AG |
645 | default: |
646 | r = -EINVAL; | |
647 | break; | |
648 | } | |
649 | ||
af8f38b3 AG |
650 | if (!r) |
651 | r = kvmppc_sanity_check(vcpu); | |
652 | ||
71fbfd5f AG |
653 | return r; |
654 | } | |
655 | ||
bbf45ba5 HB |
656 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
657 | struct kvm_mp_state *mp_state) | |
658 | { | |
659 | return -EINVAL; | |
660 | } | |
661 | ||
662 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
663 | struct kvm_mp_state *mp_state) | |
664 | { | |
665 | return -EINVAL; | |
666 | } | |
667 | ||
668 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
669 | unsigned int ioctl, unsigned long arg) | |
670 | { | |
671 | struct kvm_vcpu *vcpu = filp->private_data; | |
672 | void __user *argp = (void __user *)arg; | |
673 | long r; | |
674 | ||
93736624 AK |
675 | switch (ioctl) { |
676 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
677 | struct kvm_interrupt irq; |
678 | r = -EFAULT; | |
679 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 680 | goto out; |
bbf45ba5 | 681 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 682 | goto out; |
bbf45ba5 | 683 | } |
19483d14 | 684 | |
71fbfd5f AG |
685 | case KVM_ENABLE_CAP: |
686 | { | |
687 | struct kvm_enable_cap cap; | |
688 | r = -EFAULT; | |
689 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
690 | goto out; | |
691 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
692 | break; | |
693 | } | |
dc83b8bc | 694 | |
e24ed81f AG |
695 | case KVM_SET_ONE_REG: |
696 | case KVM_GET_ONE_REG: | |
697 | { | |
698 | struct kvm_one_reg reg; | |
699 | r = -EFAULT; | |
700 | if (copy_from_user(®, argp, sizeof(reg))) | |
701 | goto out; | |
702 | if (ioctl == KVM_SET_ONE_REG) | |
703 | r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); | |
704 | else | |
705 | r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); | |
706 | break; | |
707 | } | |
708 | ||
73196cd3 | 709 | #if defined(CONFIG_KVM_E500) || defined(CONFIG_KVM_E500MC) |
dc83b8bc SW |
710 | case KVM_DIRTY_TLB: { |
711 | struct kvm_dirty_tlb dirty; | |
712 | r = -EFAULT; | |
713 | if (copy_from_user(&dirty, argp, sizeof(dirty))) | |
714 | goto out; | |
715 | r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); | |
716 | break; | |
717 | } | |
718 | #endif | |
719 | ||
bbf45ba5 HB |
720 | default: |
721 | r = -EINVAL; | |
722 | } | |
723 | ||
724 | out: | |
725 | return r; | |
726 | } | |
727 | ||
5b1c1493 CO |
728 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
729 | { | |
730 | return VM_FAULT_SIGBUS; | |
731 | } | |
732 | ||
15711e9c AG |
733 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
734 | { | |
735 | u32 inst_lis = 0x3c000000; | |
736 | u32 inst_ori = 0x60000000; | |
737 | u32 inst_nop = 0x60000000; | |
738 | u32 inst_sc = 0x44000002; | |
739 | u32 inst_imm_mask = 0xffff; | |
740 | ||
741 | /* | |
742 | * The hypercall to get into KVM from within guest context is as | |
743 | * follows: | |
744 | * | |
745 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
746 | * ori r0, KVM_SC_MAGIC_R0@l | |
747 | * sc | |
748 | * nop | |
749 | */ | |
750 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
751 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
752 | pvinfo->hcall[2] = inst_sc; | |
753 | pvinfo->hcall[3] = inst_nop; | |
754 | ||
755 | return 0; | |
756 | } | |
757 | ||
bbf45ba5 HB |
758 | long kvm_arch_vm_ioctl(struct file *filp, |
759 | unsigned int ioctl, unsigned long arg) | |
760 | { | |
15711e9c | 761 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
762 | long r; |
763 | ||
764 | switch (ioctl) { | |
15711e9c AG |
765 | case KVM_PPC_GET_PVINFO: { |
766 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 767 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
768 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
769 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
770 | r = -EFAULT; | |
771 | goto out; | |
772 | } | |
773 | ||
774 | break; | |
775 | } | |
54738c09 DG |
776 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
777 | case KVM_CREATE_SPAPR_TCE: { | |
778 | struct kvm_create_spapr_tce create_tce; | |
779 | struct kvm *kvm = filp->private_data; | |
780 | ||
781 | r = -EFAULT; | |
782 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
783 | goto out; | |
784 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
785 | goto out; | |
786 | } | |
aa04b4cc PM |
787 | |
788 | case KVM_ALLOCATE_RMA: { | |
789 | struct kvm *kvm = filp->private_data; | |
790 | struct kvm_allocate_rma rma; | |
791 | ||
792 | r = kvm_vm_ioctl_allocate_rma(kvm, &rma); | |
793 | if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) | |
794 | r = -EFAULT; | |
795 | break; | |
796 | } | |
54738c09 DG |
797 | #endif /* CONFIG_KVM_BOOK3S_64_HV */ |
798 | ||
bbf45ba5 | 799 | default: |
367e1319 | 800 | r = -ENOTTY; |
bbf45ba5 HB |
801 | } |
802 | ||
15711e9c | 803 | out: |
bbf45ba5 HB |
804 | return r; |
805 | } | |
806 | ||
043cc4d7 SW |
807 | static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)]; |
808 | static unsigned long nr_lpids; | |
809 | ||
810 | long kvmppc_alloc_lpid(void) | |
811 | { | |
812 | long lpid; | |
813 | ||
814 | do { | |
815 | lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS); | |
816 | if (lpid >= nr_lpids) { | |
817 | pr_err("%s: No LPIDs free\n", __func__); | |
818 | return -ENOMEM; | |
819 | } | |
820 | } while (test_and_set_bit(lpid, lpid_inuse)); | |
821 | ||
822 | return lpid; | |
823 | } | |
824 | ||
825 | void kvmppc_claim_lpid(long lpid) | |
826 | { | |
827 | set_bit(lpid, lpid_inuse); | |
828 | } | |
829 | ||
830 | void kvmppc_free_lpid(long lpid) | |
831 | { | |
832 | clear_bit(lpid, lpid_inuse); | |
833 | } | |
834 | ||
835 | void kvmppc_init_lpid(unsigned long nr_lpids_param) | |
836 | { | |
837 | nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param); | |
838 | memset(lpid_inuse, 0, sizeof(lpid_inuse)); | |
839 | } | |
840 | ||
bbf45ba5 HB |
841 | int kvm_arch_init(void *opaque) |
842 | { | |
843 | return 0; | |
844 | } | |
845 | ||
846 | void kvm_arch_exit(void) | |
847 | { | |
848 | } |