Commit | Line | Data |
---|---|---|
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> | |
24 | #include <linux/module.h> | |
25 | #include <linux/vmalloc.h> | |
544c6761 | 26 | #include <linux/hrtimer.h> |
bbf45ba5 | 27 | #include <linux/fs.h> |
5a0e3ad6 | 28 | #include <linux/slab.h> |
bbf45ba5 HB |
29 | #include <asm/cputable.h> |
30 | #include <asm/uaccess.h> | |
31 | #include <asm/kvm_ppc.h> | |
83aae4a8 | 32 | #include <asm/tlbflush.h> |
371fefd6 | 33 | #include <asm/cputhreads.h> |
73e75b41 | 34 | #include "timing.h" |
fad7b9b5 | 35 | #include "../mm/mmu_decl.h" |
bbf45ba5 | 36 | |
46f43c6e MT |
37 | #define CREATE_TRACE_POINTS |
38 | #include "trace.h" | |
39 | ||
bbf45ba5 HB |
40 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) |
41 | { | |
de56a948 | 42 | #ifndef CONFIG_KVM_BOOK3S_64_HV |
666e7252 AG |
43 | return !(v->arch.shared->msr & MSR_WE) || |
44 | !!(v->arch.pending_exceptions); | |
de56a948 | 45 | #else |
a8606e20 | 46 | return !(v->arch.ceded) || !!(v->arch.pending_exceptions); |
de56a948 | 47 | #endif |
bbf45ba5 HB |
48 | } |
49 | ||
2a342ed5 AG |
50 | int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) |
51 | { | |
52 | int nr = kvmppc_get_gpr(vcpu, 11); | |
53 | int r; | |
54 | unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); | |
55 | unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); | |
56 | unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); | |
57 | unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); | |
58 | unsigned long r2 = 0; | |
59 | ||
60 | if (!(vcpu->arch.shared->msr & MSR_SF)) { | |
61 | /* 32 bit mode */ | |
62 | param1 &= 0xffffffff; | |
63 | param2 &= 0xffffffff; | |
64 | param3 &= 0xffffffff; | |
65 | param4 &= 0xffffffff; | |
66 | } | |
67 | ||
68 | switch (nr) { | |
5fc87407 AG |
69 | case HC_VENDOR_KVM | KVM_HC_PPC_MAP_MAGIC_PAGE: |
70 | { | |
71 | vcpu->arch.magic_page_pa = param1; | |
72 | vcpu->arch.magic_page_ea = param2; | |
73 | ||
df1bfa25 | 74 | r2 = KVM_MAGIC_FEAT_SR; |
7508e16c | 75 | |
5fc87407 AG |
76 | r = HC_EV_SUCCESS; |
77 | break; | |
78 | } | |
2a342ed5 AG |
79 | case HC_VENDOR_KVM | KVM_HC_FEATURES: |
80 | r = HC_EV_SUCCESS; | |
a4cd8b23 SW |
81 | #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500) |
82 | /* XXX Missing magic page on 44x */ | |
5fc87407 AG |
83 | r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); |
84 | #endif | |
2a342ed5 AG |
85 | |
86 | /* Second return value is in r4 */ | |
2a342ed5 AG |
87 | break; |
88 | default: | |
89 | r = HC_EV_UNIMPLEMENTED; | |
90 | break; | |
91 | } | |
92 | ||
7508e16c AG |
93 | kvmppc_set_gpr(vcpu, 4, r2); |
94 | ||
2a342ed5 AG |
95 | return r; |
96 | } | |
bbf45ba5 HB |
97 | |
98 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) | |
99 | { | |
100 | enum emulation_result er; | |
101 | int r; | |
102 | ||
103 | er = kvmppc_emulate_instruction(run, vcpu); | |
104 | switch (er) { | |
105 | case EMULATE_DONE: | |
106 | /* Future optimization: only reload non-volatiles if they were | |
107 | * actually modified. */ | |
108 | r = RESUME_GUEST_NV; | |
109 | break; | |
110 | case EMULATE_DO_MMIO: | |
111 | run->exit_reason = KVM_EXIT_MMIO; | |
112 | /* We must reload nonvolatiles because "update" load/store | |
113 | * instructions modify register state. */ | |
114 | /* Future optimization: only reload non-volatiles if they were | |
115 | * actually modified. */ | |
116 | r = RESUME_HOST_NV; | |
117 | break; | |
118 | case EMULATE_FAIL: | |
119 | /* XXX Deliver Program interrupt to guest. */ | |
120 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, | |
c7f38f46 | 121 | kvmppc_get_last_inst(vcpu)); |
bbf45ba5 HB |
122 | r = RESUME_HOST; |
123 | break; | |
124 | default: | |
125 | BUG(); | |
126 | } | |
127 | ||
128 | return r; | |
129 | } | |
130 | ||
10474ae8 | 131 | int kvm_arch_hardware_enable(void *garbage) |
bbf45ba5 | 132 | { |
10474ae8 | 133 | return 0; |
bbf45ba5 HB |
134 | } |
135 | ||
136 | void kvm_arch_hardware_disable(void *garbage) | |
137 | { | |
138 | } | |
139 | ||
140 | int kvm_arch_hardware_setup(void) | |
141 | { | |
142 | return 0; | |
143 | } | |
144 | ||
145 | void kvm_arch_hardware_unsetup(void) | |
146 | { | |
147 | } | |
148 | ||
149 | void kvm_arch_check_processor_compat(void *rtn) | |
150 | { | |
9dd921cf | 151 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
bbf45ba5 HB |
152 | } |
153 | ||
d89f5eff | 154 | int kvm_arch_init_vm(struct kvm *kvm) |
bbf45ba5 | 155 | { |
f9e0554d | 156 | return kvmppc_core_init_vm(kvm); |
bbf45ba5 HB |
157 | } |
158 | ||
d89f5eff | 159 | void kvm_arch_destroy_vm(struct kvm *kvm) |
bbf45ba5 HB |
160 | { |
161 | unsigned int i; | |
988a2cae | 162 | struct kvm_vcpu *vcpu; |
bbf45ba5 | 163 | |
988a2cae GN |
164 | kvm_for_each_vcpu(i, vcpu, kvm) |
165 | kvm_arch_vcpu_free(vcpu); | |
166 | ||
167 | mutex_lock(&kvm->lock); | |
168 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) | |
169 | kvm->vcpus[i] = NULL; | |
170 | ||
171 | atomic_set(&kvm->online_vcpus, 0); | |
f9e0554d PM |
172 | |
173 | kvmppc_core_destroy_vm(kvm); | |
174 | ||
988a2cae | 175 | mutex_unlock(&kvm->lock); |
bbf45ba5 HB |
176 | } |
177 | ||
ad8ba2cd SY |
178 | void kvm_arch_sync_events(struct kvm *kvm) |
179 | { | |
180 | } | |
181 | ||
bbf45ba5 HB |
182 | int kvm_dev_ioctl_check_extension(long ext) |
183 | { | |
184 | int r; | |
185 | ||
186 | switch (ext) { | |
5ce941ee SW |
187 | #ifdef CONFIG_BOOKE |
188 | case KVM_CAP_PPC_BOOKE_SREGS: | |
189 | #else | |
e15a1137 | 190 | case KVM_CAP_PPC_SEGSTATE: |
a15bd354 | 191 | case KVM_CAP_PPC_HIOR: |
930b412a | 192 | case KVM_CAP_PPC_PAPR: |
5ce941ee | 193 | #endif |
18978768 | 194 | case KVM_CAP_PPC_UNSET_IRQ: |
7b4203e8 | 195 | case KVM_CAP_PPC_IRQ_LEVEL: |
71fbfd5f | 196 | case KVM_CAP_ENABLE_CAP: |
de56a948 PM |
197 | r = 1; |
198 | break; | |
199 | #ifndef CONFIG_KVM_BOOK3S_64_HV | |
200 | case KVM_CAP_PPC_PAIRED_SINGLES: | |
ad0a048b | 201 | case KVM_CAP_PPC_OSI: |
15711e9c | 202 | case KVM_CAP_PPC_GET_PVINFO: |
e15a1137 AG |
203 | r = 1; |
204 | break; | |
588968b6 LV |
205 | case KVM_CAP_COALESCED_MMIO: |
206 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
207 | break; | |
54738c09 DG |
208 | #endif |
209 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
210 | case KVM_CAP_SPAPR_TCE: | |
211 | r = 1; | |
212 | break; | |
371fefd6 PM |
213 | case KVM_CAP_PPC_SMT: |
214 | r = threads_per_core; | |
215 | break; | |
aa04b4cc PM |
216 | case KVM_CAP_PPC_RMA: |
217 | r = 1; | |
9e368f29 PM |
218 | /* PPC970 requires an RMA */ |
219 | if (cpu_has_feature(CPU_FTR_ARCH_201)) | |
220 | r = 2; | |
aa04b4cc | 221 | break; |
de56a948 | 222 | #endif |
bbf45ba5 HB |
223 | default: |
224 | r = 0; | |
225 | break; | |
226 | } | |
227 | return r; | |
228 | ||
229 | } | |
230 | ||
231 | long kvm_arch_dev_ioctl(struct file *filp, | |
232 | unsigned int ioctl, unsigned long arg) | |
233 | { | |
234 | return -EINVAL; | |
235 | } | |
236 | ||
f7784b8e MT |
237 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
238 | struct kvm_memory_slot *memslot, | |
239 | struct kvm_memory_slot old, | |
240 | struct kvm_userspace_memory_region *mem, | |
241 | int user_alloc) | |
bbf45ba5 | 242 | { |
f9e0554d | 243 | return kvmppc_core_prepare_memory_region(kvm, mem); |
bbf45ba5 HB |
244 | } |
245 | ||
f7784b8e MT |
246 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
247 | struct kvm_userspace_memory_region *mem, | |
248 | struct kvm_memory_slot old, | |
249 | int user_alloc) | |
250 | { | |
f9e0554d | 251 | kvmppc_core_commit_memory_region(kvm, mem); |
f7784b8e MT |
252 | } |
253 | ||
254 | ||
34d4cb8f MT |
255 | void kvm_arch_flush_shadow(struct kvm *kvm) |
256 | { | |
257 | } | |
258 | ||
bbf45ba5 HB |
259 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
260 | { | |
73e75b41 HB |
261 | struct kvm_vcpu *vcpu; |
262 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
06056bfb WY |
263 | if (!IS_ERR(vcpu)) |
264 | kvmppc_create_vcpu_debugfs(vcpu, id); | |
73e75b41 | 265 | return vcpu; |
bbf45ba5 HB |
266 | } |
267 | ||
268 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) | |
269 | { | |
a595405d AG |
270 | /* Make sure we're not using the vcpu anymore */ |
271 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
272 | tasklet_kill(&vcpu->arch.tasklet); | |
273 | ||
73e75b41 | 274 | kvmppc_remove_vcpu_debugfs(vcpu); |
db93f574 | 275 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
276 | } |
277 | ||
278 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
279 | { | |
280 | kvm_arch_vcpu_free(vcpu); | |
281 | } | |
282 | ||
283 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
284 | { | |
9dd921cf | 285 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
286 | } |
287 | ||
288 | static void kvmppc_decrementer_func(unsigned long data) | |
289 | { | |
290 | struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; | |
291 | ||
9dd921cf | 292 | kvmppc_core_queue_dec(vcpu); |
45c5eb67 HB |
293 | |
294 | if (waitqueue_active(&vcpu->wq)) { | |
295 | wake_up_interruptible(&vcpu->wq); | |
296 | vcpu->stat.halt_wakeup++; | |
297 | } | |
bbf45ba5 HB |
298 | } |
299 | ||
544c6761 AG |
300 | /* |
301 | * low level hrtimer wake routine. Because this runs in hardirq context | |
302 | * we schedule a tasklet to do the real work. | |
303 | */ | |
304 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
305 | { | |
306 | struct kvm_vcpu *vcpu; | |
307 | ||
308 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
309 | tasklet_schedule(&vcpu->arch.tasklet); | |
310 | ||
311 | return HRTIMER_NORESTART; | |
312 | } | |
313 | ||
bbf45ba5 HB |
314 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
315 | { | |
544c6761 AG |
316 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
317 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
318 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 319 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 320 | |
09000adb BB |
321 | #ifdef CONFIG_KVM_EXIT_TIMING |
322 | mutex_init(&vcpu->arch.exit_timing_lock); | |
323 | #endif | |
324 | ||
bbf45ba5 HB |
325 | return 0; |
326 | } | |
327 | ||
328 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
329 | { | |
ecc0981f | 330 | kvmppc_mmu_destroy(vcpu); |
bbf45ba5 HB |
331 | } |
332 | ||
333 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
334 | { | |
eab17672 SW |
335 | #ifdef CONFIG_BOOKE |
336 | /* | |
337 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
338 | * be used by the guest. | |
339 | * | |
340 | * On non-booke this is associated with Altivec and | |
341 | * is handled by code in book3s.c. | |
342 | */ | |
343 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
344 | #endif | |
9dd921cf | 345 | kvmppc_core_vcpu_load(vcpu, cpu); |
de56a948 | 346 | vcpu->cpu = smp_processor_id(); |
bbf45ba5 HB |
347 | } |
348 | ||
349 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
350 | { | |
9dd921cf | 351 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
352 | #ifdef CONFIG_BOOKE |
353 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
354 | #endif | |
de56a948 | 355 | vcpu->cpu = -1; |
bbf45ba5 HB |
356 | } |
357 | ||
d0bfb940 | 358 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
f5d0906b | 359 | struct kvm_guest_debug *dbg) |
bbf45ba5 | 360 | { |
f5d0906b | 361 | return -EINVAL; |
bbf45ba5 HB |
362 | } |
363 | ||
364 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, | |
365 | struct kvm_run *run) | |
366 | { | |
8e5b26b5 | 367 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
368 | } |
369 | ||
370 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
371 | struct kvm_run *run) | |
372 | { | |
69b61833 | 373 | u64 uninitialized_var(gpr); |
bbf45ba5 | 374 | |
8e5b26b5 | 375 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
376 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
377 | return; | |
378 | } | |
379 | ||
380 | if (vcpu->arch.mmio_is_bigendian) { | |
381 | switch (run->mmio.len) { | |
b104d066 | 382 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
383 | case 4: gpr = *(u32 *)run->mmio.data; break; |
384 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
385 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
386 | } |
387 | } else { | |
388 | /* Convert BE data from userland back to LE. */ | |
389 | switch (run->mmio.len) { | |
8e5b26b5 AG |
390 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
391 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
392 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
393 | } |
394 | } | |
8e5b26b5 | 395 | |
3587d534 AG |
396 | if (vcpu->arch.mmio_sign_extend) { |
397 | switch (run->mmio.len) { | |
398 | #ifdef CONFIG_PPC64 | |
399 | case 4: | |
400 | gpr = (s64)(s32)gpr; | |
401 | break; | |
402 | #endif | |
403 | case 2: | |
404 | gpr = (s64)(s16)gpr; | |
405 | break; | |
406 | case 1: | |
407 | gpr = (s64)(s8)gpr; | |
408 | break; | |
409 | } | |
410 | } | |
411 | ||
8e5b26b5 | 412 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 AG |
413 | |
414 | switch (vcpu->arch.io_gpr & KVM_REG_EXT_MASK) { | |
415 | case KVM_REG_GPR: | |
416 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); | |
417 | break; | |
418 | case KVM_REG_FPR: | |
419 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
420 | break; | |
287d5611 | 421 | #ifdef CONFIG_PPC_BOOK3S |
b104d066 AG |
422 | case KVM_REG_QPR: |
423 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
424 | break; | |
425 | case KVM_REG_FQPR: | |
426 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
427 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
428 | break; | |
287d5611 | 429 | #endif |
b104d066 AG |
430 | default: |
431 | BUG(); | |
432 | } | |
bbf45ba5 HB |
433 | } |
434 | ||
435 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
436 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
437 | { | |
438 | if (bytes > sizeof(run->mmio.data)) { | |
439 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
440 | run->mmio.len); | |
441 | } | |
442 | ||
443 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
444 | run->mmio.len = bytes; | |
445 | run->mmio.is_write = 0; | |
446 | ||
447 | vcpu->arch.io_gpr = rt; | |
448 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
449 | vcpu->mmio_needed = 1; | |
450 | vcpu->mmio_is_write = 0; | |
3587d534 | 451 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 HB |
452 | |
453 | return EMULATE_DO_MMIO; | |
454 | } | |
455 | ||
3587d534 AG |
456 | /* Same as above, but sign extends */ |
457 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
458 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
459 | { | |
460 | int r; | |
461 | ||
462 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); | |
463 | vcpu->arch.mmio_sign_extend = 1; | |
464 | ||
465 | return r; | |
466 | } | |
467 | ||
bbf45ba5 | 468 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 469 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
470 | { |
471 | void *data = run->mmio.data; | |
472 | ||
473 | if (bytes > sizeof(run->mmio.data)) { | |
474 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
475 | run->mmio.len); | |
476 | } | |
477 | ||
478 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
479 | run->mmio.len = bytes; | |
480 | run->mmio.is_write = 1; | |
481 | vcpu->mmio_needed = 1; | |
482 | vcpu->mmio_is_write = 1; | |
483 | ||
484 | /* Store the value at the lowest bytes in 'data'. */ | |
485 | if (is_bigendian) { | |
486 | switch (bytes) { | |
b104d066 | 487 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
488 | case 4: *(u32 *)data = val; break; |
489 | case 2: *(u16 *)data = val; break; | |
490 | case 1: *(u8 *)data = val; break; | |
491 | } | |
492 | } else { | |
493 | /* Store LE value into 'data'. */ | |
494 | switch (bytes) { | |
495 | case 4: st_le32(data, val); break; | |
496 | case 2: st_le16(data, val); break; | |
497 | case 1: *(u8 *)data = val; break; | |
498 | } | |
499 | } | |
500 | ||
501 | return EMULATE_DO_MMIO; | |
502 | } | |
503 | ||
504 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
505 | { | |
506 | int r; | |
507 | sigset_t sigsaved; | |
508 | ||
509 | if (vcpu->sigset_active) | |
510 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
511 | ||
512 | if (vcpu->mmio_needed) { | |
513 | if (!vcpu->mmio_is_write) | |
514 | kvmppc_complete_mmio_load(vcpu, run); | |
515 | vcpu->mmio_needed = 0; | |
516 | } else if (vcpu->arch.dcr_needed) { | |
517 | if (!vcpu->arch.dcr_is_write) | |
518 | kvmppc_complete_dcr_load(vcpu, run); | |
519 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
520 | } else if (vcpu->arch.osi_needed) { |
521 | u64 *gprs = run->osi.gprs; | |
522 | int i; | |
523 | ||
524 | for (i = 0; i < 32; i++) | |
525 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
526 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
527 | } else if (vcpu->arch.hcall_needed) { |
528 | int i; | |
529 | ||
530 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
531 | for (i = 0; i < 9; ++i) | |
532 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
533 | vcpu->arch.hcall_needed = 0; | |
bbf45ba5 HB |
534 | } |
535 | ||
9dd921cf | 536 | kvmppc_core_deliver_interrupts(vcpu); |
bbf45ba5 | 537 | |
df6909e5 | 538 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
539 | |
540 | if (vcpu->sigset_active) | |
541 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
542 | ||
543 | return r; | |
544 | } | |
545 | ||
546 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
547 | { | |
18978768 AG |
548 | if (irq->irq == KVM_INTERRUPT_UNSET) |
549 | kvmppc_core_dequeue_external(vcpu, irq); | |
550 | else | |
551 | kvmppc_core_queue_external(vcpu, irq); | |
45c5eb67 HB |
552 | |
553 | if (waitqueue_active(&vcpu->wq)) { | |
554 | wake_up_interruptible(&vcpu->wq); | |
555 | vcpu->stat.halt_wakeup++; | |
de56a948 PM |
556 | } else if (vcpu->cpu != -1) { |
557 | smp_send_reschedule(vcpu->cpu); | |
45c5eb67 HB |
558 | } |
559 | ||
bbf45ba5 HB |
560 | return 0; |
561 | } | |
562 | ||
71fbfd5f AG |
563 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
564 | struct kvm_enable_cap *cap) | |
565 | { | |
566 | int r; | |
567 | ||
568 | if (cap->flags) | |
569 | return -EINVAL; | |
570 | ||
571 | switch (cap->cap) { | |
ad0a048b AG |
572 | case KVM_CAP_PPC_OSI: |
573 | r = 0; | |
574 | vcpu->arch.osi_enabled = true; | |
575 | break; | |
930b412a AG |
576 | case KVM_CAP_PPC_PAPR: |
577 | r = 0; | |
578 | vcpu->arch.papr_enabled = true; | |
579 | break; | |
71fbfd5f AG |
580 | default: |
581 | r = -EINVAL; | |
582 | break; | |
583 | } | |
584 | ||
585 | return r; | |
586 | } | |
587 | ||
bbf45ba5 HB |
588 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
589 | struct kvm_mp_state *mp_state) | |
590 | { | |
591 | return -EINVAL; | |
592 | } | |
593 | ||
594 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
595 | struct kvm_mp_state *mp_state) | |
596 | { | |
597 | return -EINVAL; | |
598 | } | |
599 | ||
600 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
601 | unsigned int ioctl, unsigned long arg) | |
602 | { | |
603 | struct kvm_vcpu *vcpu = filp->private_data; | |
604 | void __user *argp = (void __user *)arg; | |
605 | long r; | |
606 | ||
93736624 AK |
607 | switch (ioctl) { |
608 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
609 | struct kvm_interrupt irq; |
610 | r = -EFAULT; | |
611 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 612 | goto out; |
bbf45ba5 | 613 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 614 | goto out; |
bbf45ba5 | 615 | } |
19483d14 | 616 | |
71fbfd5f AG |
617 | case KVM_ENABLE_CAP: |
618 | { | |
619 | struct kvm_enable_cap cap; | |
620 | r = -EFAULT; | |
621 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
622 | goto out; | |
623 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
624 | break; | |
625 | } | |
bbf45ba5 HB |
626 | default: |
627 | r = -EINVAL; | |
628 | } | |
629 | ||
630 | out: | |
631 | return r; | |
632 | } | |
633 | ||
15711e9c AG |
634 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
635 | { | |
636 | u32 inst_lis = 0x3c000000; | |
637 | u32 inst_ori = 0x60000000; | |
638 | u32 inst_nop = 0x60000000; | |
639 | u32 inst_sc = 0x44000002; | |
640 | u32 inst_imm_mask = 0xffff; | |
641 | ||
642 | /* | |
643 | * The hypercall to get into KVM from within guest context is as | |
644 | * follows: | |
645 | * | |
646 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
647 | * ori r0, KVM_SC_MAGIC_R0@l | |
648 | * sc | |
649 | * nop | |
650 | */ | |
651 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
652 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
653 | pvinfo->hcall[2] = inst_sc; | |
654 | pvinfo->hcall[3] = inst_nop; | |
655 | ||
656 | return 0; | |
657 | } | |
658 | ||
bbf45ba5 HB |
659 | long kvm_arch_vm_ioctl(struct file *filp, |
660 | unsigned int ioctl, unsigned long arg) | |
661 | { | |
15711e9c | 662 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
663 | long r; |
664 | ||
665 | switch (ioctl) { | |
15711e9c AG |
666 | case KVM_PPC_GET_PVINFO: { |
667 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 668 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
669 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
670 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
671 | r = -EFAULT; | |
672 | goto out; | |
673 | } | |
674 | ||
675 | break; | |
676 | } | |
54738c09 DG |
677 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
678 | case KVM_CREATE_SPAPR_TCE: { | |
679 | struct kvm_create_spapr_tce create_tce; | |
680 | struct kvm *kvm = filp->private_data; | |
681 | ||
682 | r = -EFAULT; | |
683 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
684 | goto out; | |
685 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
686 | goto out; | |
687 | } | |
aa04b4cc PM |
688 | |
689 | case KVM_ALLOCATE_RMA: { | |
690 | struct kvm *kvm = filp->private_data; | |
691 | struct kvm_allocate_rma rma; | |
692 | ||
693 | r = kvm_vm_ioctl_allocate_rma(kvm, &rma); | |
694 | if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) | |
695 | r = -EFAULT; | |
696 | break; | |
697 | } | |
54738c09 DG |
698 | #endif /* CONFIG_KVM_BOOK3S_64_HV */ |
699 | ||
bbf45ba5 | 700 | default: |
367e1319 | 701 | r = -ENOTTY; |
bbf45ba5 HB |
702 | } |
703 | ||
15711e9c | 704 | out: |
bbf45ba5 HB |
705 | return r; |
706 | } | |
707 | ||
708 | int kvm_arch_init(void *opaque) | |
709 | { | |
710 | return 0; | |
711 | } | |
712 | ||
713 | void kvm_arch_exit(void) | |
714 | { | |
715 | } |