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> |
73e75b41 | 33 | #include "timing.h" |
fad7b9b5 | 34 | #include "../mm/mmu_decl.h" |
bbf45ba5 | 35 | |
46f43c6e MT |
36 | #define CREATE_TRACE_POINTS |
37 | #include "trace.h" | |
38 | ||
bbf45ba5 HB |
39 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) |
40 | { | |
666e7252 AG |
41 | return !(v->arch.shared->msr & MSR_WE) || |
42 | !!(v->arch.pending_exceptions); | |
bbf45ba5 HB |
43 | } |
44 | ||
2a342ed5 AG |
45 | int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) |
46 | { | |
47 | int nr = kvmppc_get_gpr(vcpu, 11); | |
48 | int r; | |
49 | unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); | |
50 | unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); | |
51 | unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); | |
52 | unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); | |
53 | unsigned long r2 = 0; | |
54 | ||
55 | if (!(vcpu->arch.shared->msr & MSR_SF)) { | |
56 | /* 32 bit mode */ | |
57 | param1 &= 0xffffffff; | |
58 | param2 &= 0xffffffff; | |
59 | param3 &= 0xffffffff; | |
60 | param4 &= 0xffffffff; | |
61 | } | |
62 | ||
63 | switch (nr) { | |
5fc87407 AG |
64 | case HC_VENDOR_KVM | KVM_HC_PPC_MAP_MAGIC_PAGE: |
65 | { | |
66 | vcpu->arch.magic_page_pa = param1; | |
67 | vcpu->arch.magic_page_ea = param2; | |
68 | ||
df1bfa25 | 69 | r2 = KVM_MAGIC_FEAT_SR; |
7508e16c | 70 | |
5fc87407 AG |
71 | r = HC_EV_SUCCESS; |
72 | break; | |
73 | } | |
2a342ed5 AG |
74 | case HC_VENDOR_KVM | KVM_HC_FEATURES: |
75 | r = HC_EV_SUCCESS; | |
a4cd8b23 SW |
76 | #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500) |
77 | /* XXX Missing magic page on 44x */ | |
5fc87407 AG |
78 | r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); |
79 | #endif | |
2a342ed5 AG |
80 | |
81 | /* Second return value is in r4 */ | |
2a342ed5 AG |
82 | break; |
83 | default: | |
84 | r = HC_EV_UNIMPLEMENTED; | |
85 | break; | |
86 | } | |
87 | ||
7508e16c AG |
88 | kvmppc_set_gpr(vcpu, 4, r2); |
89 | ||
2a342ed5 AG |
90 | return r; |
91 | } | |
bbf45ba5 HB |
92 | |
93 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) | |
94 | { | |
95 | enum emulation_result er; | |
96 | int r; | |
97 | ||
98 | er = kvmppc_emulate_instruction(run, vcpu); | |
99 | switch (er) { | |
100 | case EMULATE_DONE: | |
101 | /* Future optimization: only reload non-volatiles if they were | |
102 | * actually modified. */ | |
103 | r = RESUME_GUEST_NV; | |
104 | break; | |
105 | case EMULATE_DO_MMIO: | |
106 | run->exit_reason = KVM_EXIT_MMIO; | |
107 | /* We must reload nonvolatiles because "update" load/store | |
108 | * instructions modify register state. */ | |
109 | /* Future optimization: only reload non-volatiles if they were | |
110 | * actually modified. */ | |
111 | r = RESUME_HOST_NV; | |
112 | break; | |
113 | case EMULATE_FAIL: | |
114 | /* XXX Deliver Program interrupt to guest. */ | |
115 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, | |
c7f38f46 | 116 | kvmppc_get_last_inst(vcpu)); |
bbf45ba5 HB |
117 | r = RESUME_HOST; |
118 | break; | |
119 | default: | |
120 | BUG(); | |
121 | } | |
122 | ||
123 | return r; | |
124 | } | |
125 | ||
10474ae8 | 126 | int kvm_arch_hardware_enable(void *garbage) |
bbf45ba5 | 127 | { |
10474ae8 | 128 | return 0; |
bbf45ba5 HB |
129 | } |
130 | ||
131 | void kvm_arch_hardware_disable(void *garbage) | |
132 | { | |
133 | } | |
134 | ||
135 | int kvm_arch_hardware_setup(void) | |
136 | { | |
137 | return 0; | |
138 | } | |
139 | ||
140 | void kvm_arch_hardware_unsetup(void) | |
141 | { | |
142 | } | |
143 | ||
144 | void kvm_arch_check_processor_compat(void *rtn) | |
145 | { | |
9dd921cf | 146 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
bbf45ba5 HB |
147 | } |
148 | ||
d89f5eff | 149 | int kvm_arch_init_vm(struct kvm *kvm) |
bbf45ba5 | 150 | { |
d89f5eff | 151 | return 0; |
bbf45ba5 HB |
152 | } |
153 | ||
d89f5eff | 154 | void kvm_arch_destroy_vm(struct kvm *kvm) |
bbf45ba5 HB |
155 | { |
156 | unsigned int i; | |
988a2cae | 157 | struct kvm_vcpu *vcpu; |
bbf45ba5 | 158 | |
988a2cae GN |
159 | kvm_for_each_vcpu(i, vcpu, kvm) |
160 | kvm_arch_vcpu_free(vcpu); | |
161 | ||
162 | mutex_lock(&kvm->lock); | |
163 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) | |
164 | kvm->vcpus[i] = NULL; | |
165 | ||
166 | atomic_set(&kvm->online_vcpus, 0); | |
167 | mutex_unlock(&kvm->lock); | |
bbf45ba5 HB |
168 | } |
169 | ||
ad8ba2cd SY |
170 | void kvm_arch_sync_events(struct kvm *kvm) |
171 | { | |
172 | } | |
173 | ||
bbf45ba5 HB |
174 | int kvm_dev_ioctl_check_extension(long ext) |
175 | { | |
176 | int r; | |
177 | ||
178 | switch (ext) { | |
5ce941ee SW |
179 | #ifdef CONFIG_BOOKE |
180 | case KVM_CAP_PPC_BOOKE_SREGS: | |
181 | #else | |
e15a1137 | 182 | case KVM_CAP_PPC_SEGSTATE: |
5ce941ee | 183 | #endif |
c10207fe | 184 | case KVM_CAP_PPC_PAIRED_SINGLES: |
18978768 | 185 | case KVM_CAP_PPC_UNSET_IRQ: |
7b4203e8 | 186 | case KVM_CAP_PPC_IRQ_LEVEL: |
71fbfd5f | 187 | case KVM_CAP_ENABLE_CAP: |
ad0a048b | 188 | case KVM_CAP_PPC_OSI: |
15711e9c | 189 | case KVM_CAP_PPC_GET_PVINFO: |
e15a1137 AG |
190 | r = 1; |
191 | break; | |
588968b6 LV |
192 | case KVM_CAP_COALESCED_MMIO: |
193 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
194 | break; | |
bbf45ba5 HB |
195 | default: |
196 | r = 0; | |
197 | break; | |
198 | } | |
199 | return r; | |
200 | ||
201 | } | |
202 | ||
203 | long kvm_arch_dev_ioctl(struct file *filp, | |
204 | unsigned int ioctl, unsigned long arg) | |
205 | { | |
206 | return -EINVAL; | |
207 | } | |
208 | ||
f7784b8e MT |
209 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
210 | struct kvm_memory_slot *memslot, | |
211 | struct kvm_memory_slot old, | |
212 | struct kvm_userspace_memory_region *mem, | |
213 | int user_alloc) | |
bbf45ba5 HB |
214 | { |
215 | return 0; | |
216 | } | |
217 | ||
f7784b8e MT |
218 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
219 | struct kvm_userspace_memory_region *mem, | |
220 | struct kvm_memory_slot old, | |
221 | int user_alloc) | |
222 | { | |
223 | return; | |
224 | } | |
225 | ||
226 | ||
34d4cb8f MT |
227 | void kvm_arch_flush_shadow(struct kvm *kvm) |
228 | { | |
229 | } | |
230 | ||
bbf45ba5 HB |
231 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
232 | { | |
73e75b41 HB |
233 | struct kvm_vcpu *vcpu; |
234 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
06056bfb WY |
235 | if (!IS_ERR(vcpu)) |
236 | kvmppc_create_vcpu_debugfs(vcpu, id); | |
73e75b41 | 237 | return vcpu; |
bbf45ba5 HB |
238 | } |
239 | ||
240 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) | |
241 | { | |
a595405d AG |
242 | /* Make sure we're not using the vcpu anymore */ |
243 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
244 | tasklet_kill(&vcpu->arch.tasklet); | |
245 | ||
73e75b41 | 246 | kvmppc_remove_vcpu_debugfs(vcpu); |
db93f574 | 247 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
248 | } |
249 | ||
250 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
251 | { | |
252 | kvm_arch_vcpu_free(vcpu); | |
253 | } | |
254 | ||
255 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
256 | { | |
9dd921cf | 257 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
258 | } |
259 | ||
260 | static void kvmppc_decrementer_func(unsigned long data) | |
261 | { | |
262 | struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; | |
263 | ||
9dd921cf | 264 | kvmppc_core_queue_dec(vcpu); |
45c5eb67 HB |
265 | |
266 | if (waitqueue_active(&vcpu->wq)) { | |
267 | wake_up_interruptible(&vcpu->wq); | |
268 | vcpu->stat.halt_wakeup++; | |
269 | } | |
bbf45ba5 HB |
270 | } |
271 | ||
544c6761 AG |
272 | /* |
273 | * low level hrtimer wake routine. Because this runs in hardirq context | |
274 | * we schedule a tasklet to do the real work. | |
275 | */ | |
276 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
277 | { | |
278 | struct kvm_vcpu *vcpu; | |
279 | ||
280 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
281 | tasklet_schedule(&vcpu->arch.tasklet); | |
282 | ||
283 | return HRTIMER_NORESTART; | |
284 | } | |
285 | ||
bbf45ba5 HB |
286 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
287 | { | |
544c6761 AG |
288 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
289 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
290 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
bbf45ba5 | 291 | |
09000adb BB |
292 | #ifdef CONFIG_KVM_EXIT_TIMING |
293 | mutex_init(&vcpu->arch.exit_timing_lock); | |
294 | #endif | |
295 | ||
bbf45ba5 HB |
296 | return 0; |
297 | } | |
298 | ||
299 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
300 | { | |
ecc0981f | 301 | kvmppc_mmu_destroy(vcpu); |
bbf45ba5 HB |
302 | } |
303 | ||
304 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
305 | { | |
eab17672 SW |
306 | #ifdef CONFIG_BOOKE |
307 | /* | |
308 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
309 | * be used by the guest. | |
310 | * | |
311 | * On non-booke this is associated with Altivec and | |
312 | * is handled by code in book3s.c. | |
313 | */ | |
314 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
315 | #endif | |
9dd921cf | 316 | kvmppc_core_vcpu_load(vcpu, cpu); |
bbf45ba5 HB |
317 | } |
318 | ||
319 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
320 | { | |
9dd921cf | 321 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
322 | #ifdef CONFIG_BOOKE |
323 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
324 | #endif | |
bbf45ba5 HB |
325 | } |
326 | ||
d0bfb940 | 327 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
f5d0906b | 328 | struct kvm_guest_debug *dbg) |
bbf45ba5 | 329 | { |
f5d0906b | 330 | return -EINVAL; |
bbf45ba5 HB |
331 | } |
332 | ||
333 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, | |
334 | struct kvm_run *run) | |
335 | { | |
8e5b26b5 | 336 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
337 | } |
338 | ||
339 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
340 | struct kvm_run *run) | |
341 | { | |
69b61833 | 342 | u64 uninitialized_var(gpr); |
bbf45ba5 | 343 | |
8e5b26b5 | 344 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
345 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
346 | return; | |
347 | } | |
348 | ||
349 | if (vcpu->arch.mmio_is_bigendian) { | |
350 | switch (run->mmio.len) { | |
b104d066 | 351 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
352 | case 4: gpr = *(u32 *)run->mmio.data; break; |
353 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
354 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
355 | } |
356 | } else { | |
357 | /* Convert BE data from userland back to LE. */ | |
358 | switch (run->mmio.len) { | |
8e5b26b5 AG |
359 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
360 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
361 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
362 | } |
363 | } | |
8e5b26b5 | 364 | |
3587d534 AG |
365 | if (vcpu->arch.mmio_sign_extend) { |
366 | switch (run->mmio.len) { | |
367 | #ifdef CONFIG_PPC64 | |
368 | case 4: | |
369 | gpr = (s64)(s32)gpr; | |
370 | break; | |
371 | #endif | |
372 | case 2: | |
373 | gpr = (s64)(s16)gpr; | |
374 | break; | |
375 | case 1: | |
376 | gpr = (s64)(s8)gpr; | |
377 | break; | |
378 | } | |
379 | } | |
380 | ||
8e5b26b5 | 381 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 AG |
382 | |
383 | switch (vcpu->arch.io_gpr & KVM_REG_EXT_MASK) { | |
384 | case KVM_REG_GPR: | |
385 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); | |
386 | break; | |
387 | case KVM_REG_FPR: | |
388 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
389 | break; | |
287d5611 | 390 | #ifdef CONFIG_PPC_BOOK3S |
b104d066 AG |
391 | case KVM_REG_QPR: |
392 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
393 | break; | |
394 | case KVM_REG_FQPR: | |
395 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
396 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
397 | break; | |
287d5611 | 398 | #endif |
b104d066 AG |
399 | default: |
400 | BUG(); | |
401 | } | |
bbf45ba5 HB |
402 | } |
403 | ||
404 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
405 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
406 | { | |
407 | if (bytes > sizeof(run->mmio.data)) { | |
408 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
409 | run->mmio.len); | |
410 | } | |
411 | ||
412 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
413 | run->mmio.len = bytes; | |
414 | run->mmio.is_write = 0; | |
415 | ||
416 | vcpu->arch.io_gpr = rt; | |
417 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
418 | vcpu->mmio_needed = 1; | |
419 | vcpu->mmio_is_write = 0; | |
3587d534 | 420 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 HB |
421 | |
422 | return EMULATE_DO_MMIO; | |
423 | } | |
424 | ||
3587d534 AG |
425 | /* Same as above, but sign extends */ |
426 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
427 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
428 | { | |
429 | int r; | |
430 | ||
431 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); | |
432 | vcpu->arch.mmio_sign_extend = 1; | |
433 | ||
434 | return r; | |
435 | } | |
436 | ||
bbf45ba5 | 437 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 438 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
439 | { |
440 | void *data = run->mmio.data; | |
441 | ||
442 | if (bytes > sizeof(run->mmio.data)) { | |
443 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
444 | run->mmio.len); | |
445 | } | |
446 | ||
447 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
448 | run->mmio.len = bytes; | |
449 | run->mmio.is_write = 1; | |
450 | vcpu->mmio_needed = 1; | |
451 | vcpu->mmio_is_write = 1; | |
452 | ||
453 | /* Store the value at the lowest bytes in 'data'. */ | |
454 | if (is_bigendian) { | |
455 | switch (bytes) { | |
b104d066 | 456 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
457 | case 4: *(u32 *)data = val; break; |
458 | case 2: *(u16 *)data = val; break; | |
459 | case 1: *(u8 *)data = val; break; | |
460 | } | |
461 | } else { | |
462 | /* Store LE value into 'data'. */ | |
463 | switch (bytes) { | |
464 | case 4: st_le32(data, val); break; | |
465 | case 2: st_le16(data, val); break; | |
466 | case 1: *(u8 *)data = val; break; | |
467 | } | |
468 | } | |
469 | ||
470 | return EMULATE_DO_MMIO; | |
471 | } | |
472 | ||
473 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
474 | { | |
475 | int r; | |
476 | sigset_t sigsaved; | |
477 | ||
478 | if (vcpu->sigset_active) | |
479 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
480 | ||
481 | if (vcpu->mmio_needed) { | |
482 | if (!vcpu->mmio_is_write) | |
483 | kvmppc_complete_mmio_load(vcpu, run); | |
484 | vcpu->mmio_needed = 0; | |
485 | } else if (vcpu->arch.dcr_needed) { | |
486 | if (!vcpu->arch.dcr_is_write) | |
487 | kvmppc_complete_dcr_load(vcpu, run); | |
488 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
489 | } else if (vcpu->arch.osi_needed) { |
490 | u64 *gprs = run->osi.gprs; | |
491 | int i; | |
492 | ||
493 | for (i = 0; i < 32; i++) | |
494 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
495 | vcpu->arch.osi_needed = 0; | |
bbf45ba5 HB |
496 | } |
497 | ||
9dd921cf | 498 | kvmppc_core_deliver_interrupts(vcpu); |
bbf45ba5 HB |
499 | |
500 | local_irq_disable(); | |
501 | kvm_guest_enter(); | |
502 | r = __kvmppc_vcpu_run(run, vcpu); | |
503 | kvm_guest_exit(); | |
504 | local_irq_enable(); | |
505 | ||
506 | if (vcpu->sigset_active) | |
507 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
508 | ||
509 | return r; | |
510 | } | |
511 | ||
512 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) | |
513 | { | |
18978768 AG |
514 | if (irq->irq == KVM_INTERRUPT_UNSET) |
515 | kvmppc_core_dequeue_external(vcpu, irq); | |
516 | else | |
517 | kvmppc_core_queue_external(vcpu, irq); | |
45c5eb67 HB |
518 | |
519 | if (waitqueue_active(&vcpu->wq)) { | |
520 | wake_up_interruptible(&vcpu->wq); | |
521 | vcpu->stat.halt_wakeup++; | |
522 | } | |
523 | ||
bbf45ba5 HB |
524 | return 0; |
525 | } | |
526 | ||
71fbfd5f AG |
527 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
528 | struct kvm_enable_cap *cap) | |
529 | { | |
530 | int r; | |
531 | ||
532 | if (cap->flags) | |
533 | return -EINVAL; | |
534 | ||
535 | switch (cap->cap) { | |
ad0a048b AG |
536 | case KVM_CAP_PPC_OSI: |
537 | r = 0; | |
538 | vcpu->arch.osi_enabled = true; | |
539 | break; | |
71fbfd5f AG |
540 | default: |
541 | r = -EINVAL; | |
542 | break; | |
543 | } | |
544 | ||
545 | return r; | |
546 | } | |
547 | ||
bbf45ba5 HB |
548 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
549 | struct kvm_mp_state *mp_state) | |
550 | { | |
551 | return -EINVAL; | |
552 | } | |
553 | ||
554 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
555 | struct kvm_mp_state *mp_state) | |
556 | { | |
557 | return -EINVAL; | |
558 | } | |
559 | ||
560 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
561 | unsigned int ioctl, unsigned long arg) | |
562 | { | |
563 | struct kvm_vcpu *vcpu = filp->private_data; | |
564 | void __user *argp = (void __user *)arg; | |
565 | long r; | |
566 | ||
93736624 AK |
567 | switch (ioctl) { |
568 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
569 | struct kvm_interrupt irq; |
570 | r = -EFAULT; | |
571 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 572 | goto out; |
bbf45ba5 | 573 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 574 | goto out; |
bbf45ba5 | 575 | } |
19483d14 | 576 | |
71fbfd5f AG |
577 | case KVM_ENABLE_CAP: |
578 | { | |
579 | struct kvm_enable_cap cap; | |
580 | r = -EFAULT; | |
581 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
582 | goto out; | |
583 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
584 | break; | |
585 | } | |
bbf45ba5 HB |
586 | default: |
587 | r = -EINVAL; | |
588 | } | |
589 | ||
590 | out: | |
591 | return r; | |
592 | } | |
593 | ||
15711e9c AG |
594 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
595 | { | |
596 | u32 inst_lis = 0x3c000000; | |
597 | u32 inst_ori = 0x60000000; | |
598 | u32 inst_nop = 0x60000000; | |
599 | u32 inst_sc = 0x44000002; | |
600 | u32 inst_imm_mask = 0xffff; | |
601 | ||
602 | /* | |
603 | * The hypercall to get into KVM from within guest context is as | |
604 | * follows: | |
605 | * | |
606 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
607 | * ori r0, KVM_SC_MAGIC_R0@l | |
608 | * sc | |
609 | * nop | |
610 | */ | |
611 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
612 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
613 | pvinfo->hcall[2] = inst_sc; | |
614 | pvinfo->hcall[3] = inst_nop; | |
615 | ||
616 | return 0; | |
617 | } | |
618 | ||
bbf45ba5 HB |
619 | long kvm_arch_vm_ioctl(struct file *filp, |
620 | unsigned int ioctl, unsigned long arg) | |
621 | { | |
15711e9c | 622 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
623 | long r; |
624 | ||
625 | switch (ioctl) { | |
15711e9c AG |
626 | case KVM_PPC_GET_PVINFO: { |
627 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 628 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
629 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
630 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
631 | r = -EFAULT; | |
632 | goto out; | |
633 | } | |
634 | ||
635 | break; | |
636 | } | |
bbf45ba5 | 637 | default: |
367e1319 | 638 | r = -ENOTTY; |
bbf45ba5 HB |
639 | } |
640 | ||
15711e9c | 641 | out: |
bbf45ba5 HB |
642 | return r; |
643 | } | |
644 | ||
645 | int kvm_arch_init(void *opaque) | |
646 | { | |
647 | return 0; | |
648 | } | |
649 | ||
650 | void kvm_arch_exit(void) | |
651 | { | |
652 | } |