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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 | ||
2a342ed5 AG |
46 | int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) |
47 | { | |
48 | int nr = kvmppc_get_gpr(vcpu, 11); | |
49 | int r; | |
50 | unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); | |
51 | unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); | |
52 | unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); | |
53 | unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); | |
54 | unsigned long r2 = 0; | |
55 | ||
56 | if (!(vcpu->arch.shared->msr & MSR_SF)) { | |
57 | /* 32 bit mode */ | |
58 | param1 &= 0xffffffff; | |
59 | param2 &= 0xffffffff; | |
60 | param3 &= 0xffffffff; | |
61 | param4 &= 0xffffffff; | |
62 | } | |
63 | ||
64 | switch (nr) { | |
5fc87407 AG |
65 | case HC_VENDOR_KVM | KVM_HC_PPC_MAP_MAGIC_PAGE: |
66 | { | |
67 | vcpu->arch.magic_page_pa = param1; | |
68 | vcpu->arch.magic_page_ea = param2; | |
69 | ||
b5904972 | 70 | r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7; |
7508e16c | 71 | |
5fc87407 AG |
72 | r = HC_EV_SUCCESS; |
73 | break; | |
74 | } | |
2a342ed5 AG |
75 | case HC_VENDOR_KVM | KVM_HC_FEATURES: |
76 | r = HC_EV_SUCCESS; | |
a4cd8b23 SW |
77 | #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500) |
78 | /* XXX Missing magic page on 44x */ | |
5fc87407 AG |
79 | r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); |
80 | #endif | |
2a342ed5 AG |
81 | |
82 | /* Second return value is in r4 */ | |
2a342ed5 AG |
83 | break; |
84 | default: | |
85 | r = HC_EV_UNIMPLEMENTED; | |
86 | break; | |
87 | } | |
88 | ||
7508e16c AG |
89 | kvmppc_set_gpr(vcpu, 4, r2); |
90 | ||
2a342ed5 AG |
91 | return r; |
92 | } | |
bbf45ba5 | 93 | |
af8f38b3 AG |
94 | int kvmppc_sanity_check(struct kvm_vcpu *vcpu) |
95 | { | |
96 | int r = false; | |
97 | ||
98 | /* We have to know what CPU to virtualize */ | |
99 | if (!vcpu->arch.pvr) | |
100 | goto out; | |
101 | ||
102 | /* PAPR only works with book3s_64 */ | |
103 | if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled) | |
104 | goto out; | |
105 | ||
106 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
107 | /* HV KVM can only do PAPR mode for now */ | |
108 | if (!vcpu->arch.papr_enabled) | |
109 | goto out; | |
110 | #endif | |
111 | ||
112 | r = true; | |
113 | ||
114 | out: | |
115 | vcpu->arch.sane = r; | |
116 | return r ? 0 : -EINVAL; | |
117 | } | |
118 | ||
bbf45ba5 HB |
119 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) |
120 | { | |
121 | enum emulation_result er; | |
122 | int r; | |
123 | ||
124 | er = kvmppc_emulate_instruction(run, vcpu); | |
125 | switch (er) { | |
126 | case EMULATE_DONE: | |
127 | /* Future optimization: only reload non-volatiles if they were | |
128 | * actually modified. */ | |
129 | r = RESUME_GUEST_NV; | |
130 | break; | |
131 | case EMULATE_DO_MMIO: | |
132 | run->exit_reason = KVM_EXIT_MMIO; | |
133 | /* We must reload nonvolatiles because "update" load/store | |
134 | * instructions modify register state. */ | |
135 | /* Future optimization: only reload non-volatiles if they were | |
136 | * actually modified. */ | |
137 | r = RESUME_HOST_NV; | |
138 | break; | |
139 | case EMULATE_FAIL: | |
140 | /* XXX Deliver Program interrupt to guest. */ | |
141 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, | |
c7f38f46 | 142 | kvmppc_get_last_inst(vcpu)); |
bbf45ba5 HB |
143 | r = RESUME_HOST; |
144 | break; | |
145 | default: | |
146 | BUG(); | |
147 | } | |
148 | ||
149 | return r; | |
150 | } | |
151 | ||
10474ae8 | 152 | int kvm_arch_hardware_enable(void *garbage) |
bbf45ba5 | 153 | { |
10474ae8 | 154 | return 0; |
bbf45ba5 HB |
155 | } |
156 | ||
157 | void kvm_arch_hardware_disable(void *garbage) | |
158 | { | |
159 | } | |
160 | ||
161 | int kvm_arch_hardware_setup(void) | |
162 | { | |
163 | return 0; | |
164 | } | |
165 | ||
166 | void kvm_arch_hardware_unsetup(void) | |
167 | { | |
168 | } | |
169 | ||
170 | void kvm_arch_check_processor_compat(void *rtn) | |
171 | { | |
9dd921cf | 172 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
bbf45ba5 HB |
173 | } |
174 | ||
e08b9637 | 175 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
bbf45ba5 | 176 | { |
e08b9637 CO |
177 | if (type) |
178 | return -EINVAL; | |
179 | ||
f9e0554d | 180 | return kvmppc_core_init_vm(kvm); |
bbf45ba5 HB |
181 | } |
182 | ||
d89f5eff | 183 | void kvm_arch_destroy_vm(struct kvm *kvm) |
bbf45ba5 HB |
184 | { |
185 | unsigned int i; | |
988a2cae | 186 | struct kvm_vcpu *vcpu; |
bbf45ba5 | 187 | |
988a2cae GN |
188 | kvm_for_each_vcpu(i, vcpu, kvm) |
189 | kvm_arch_vcpu_free(vcpu); | |
190 | ||
191 | mutex_lock(&kvm->lock); | |
192 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) | |
193 | kvm->vcpus[i] = NULL; | |
194 | ||
195 | atomic_set(&kvm->online_vcpus, 0); | |
f9e0554d PM |
196 | |
197 | kvmppc_core_destroy_vm(kvm); | |
198 | ||
988a2cae | 199 | mutex_unlock(&kvm->lock); |
bbf45ba5 HB |
200 | } |
201 | ||
ad8ba2cd SY |
202 | void kvm_arch_sync_events(struct kvm *kvm) |
203 | { | |
204 | } | |
205 | ||
bbf45ba5 HB |
206 | int kvm_dev_ioctl_check_extension(long ext) |
207 | { | |
208 | int r; | |
209 | ||
210 | switch (ext) { | |
5ce941ee SW |
211 | #ifdef CONFIG_BOOKE |
212 | case KVM_CAP_PPC_BOOKE_SREGS: | |
213 | #else | |
e15a1137 | 214 | case KVM_CAP_PPC_SEGSTATE: |
930b412a | 215 | case KVM_CAP_PPC_PAPR: |
5ce941ee | 216 | #endif |
18978768 | 217 | case KVM_CAP_PPC_UNSET_IRQ: |
7b4203e8 | 218 | case KVM_CAP_PPC_IRQ_LEVEL: |
71fbfd5f | 219 | case KVM_CAP_ENABLE_CAP: |
e24ed81f | 220 | case KVM_CAP_ONE_REG: |
de56a948 PM |
221 | r = 1; |
222 | break; | |
223 | #ifndef CONFIG_KVM_BOOK3S_64_HV | |
224 | case KVM_CAP_PPC_PAIRED_SINGLES: | |
ad0a048b | 225 | case KVM_CAP_PPC_OSI: |
15711e9c | 226 | case KVM_CAP_PPC_GET_PVINFO: |
dc83b8bc SW |
227 | #ifdef CONFIG_KVM_E500 |
228 | case KVM_CAP_SW_TLB: | |
229 | #endif | |
e15a1137 AG |
230 | r = 1; |
231 | break; | |
588968b6 LV |
232 | case KVM_CAP_COALESCED_MMIO: |
233 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; | |
234 | break; | |
54738c09 DG |
235 | #endif |
236 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
237 | case KVM_CAP_SPAPR_TCE: | |
238 | r = 1; | |
239 | break; | |
371fefd6 PM |
240 | case KVM_CAP_PPC_SMT: |
241 | r = threads_per_core; | |
242 | break; | |
aa04b4cc PM |
243 | case KVM_CAP_PPC_RMA: |
244 | r = 1; | |
9e368f29 PM |
245 | /* PPC970 requires an RMA */ |
246 | if (cpu_has_feature(CPU_FTR_ARCH_201)) | |
247 | r = 2; | |
aa04b4cc | 248 | break; |
342d3db7 PM |
249 | case KVM_CAP_SYNC_MMU: |
250 | r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0; | |
251 | break; | |
de56a948 | 252 | #endif |
b5434032 ME |
253 | case KVM_CAP_NR_VCPUS: |
254 | /* | |
255 | * Recommending a number of CPUs is somewhat arbitrary; we | |
256 | * return the number of present CPUs for -HV (since a host | |
257 | * will have secondary threads "offline"), and for other KVM | |
258 | * implementations just count online CPUs. | |
259 | */ | |
260 | #ifdef CONFIG_KVM_BOOK3S_64_HV | |
261 | r = num_present_cpus(); | |
262 | #else | |
263 | r = num_online_cpus(); | |
264 | #endif | |
265 | break; | |
266 | case KVM_CAP_MAX_VCPUS: | |
267 | r = KVM_MAX_VCPUS; | |
268 | break; | |
bbf45ba5 HB |
269 | default: |
270 | r = 0; | |
271 | break; | |
272 | } | |
273 | return r; | |
274 | ||
275 | } | |
276 | ||
277 | long kvm_arch_dev_ioctl(struct file *filp, | |
278 | unsigned int ioctl, unsigned long arg) | |
279 | { | |
280 | return -EINVAL; | |
281 | } | |
282 | ||
f7784b8e MT |
283 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
284 | struct kvm_memory_slot *memslot, | |
285 | struct kvm_memory_slot old, | |
286 | struct kvm_userspace_memory_region *mem, | |
287 | int user_alloc) | |
bbf45ba5 | 288 | { |
f9e0554d | 289 | return kvmppc_core_prepare_memory_region(kvm, mem); |
bbf45ba5 HB |
290 | } |
291 | ||
f7784b8e MT |
292 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
293 | struct kvm_userspace_memory_region *mem, | |
294 | struct kvm_memory_slot old, | |
295 | int user_alloc) | |
296 | { | |
f9e0554d | 297 | kvmppc_core_commit_memory_region(kvm, mem); |
f7784b8e MT |
298 | } |
299 | ||
300 | ||
34d4cb8f MT |
301 | void kvm_arch_flush_shadow(struct kvm *kvm) |
302 | { | |
303 | } | |
304 | ||
bbf45ba5 HB |
305 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
306 | { | |
73e75b41 HB |
307 | struct kvm_vcpu *vcpu; |
308 | vcpu = kvmppc_core_vcpu_create(kvm, id); | |
03cdab53 ME |
309 | if (!IS_ERR(vcpu)) { |
310 | vcpu->arch.wqp = &vcpu->wq; | |
06056bfb | 311 | kvmppc_create_vcpu_debugfs(vcpu, id); |
03cdab53 | 312 | } |
73e75b41 | 313 | return vcpu; |
bbf45ba5 HB |
314 | } |
315 | ||
316 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) | |
317 | { | |
a595405d AG |
318 | /* Make sure we're not using the vcpu anymore */ |
319 | hrtimer_cancel(&vcpu->arch.dec_timer); | |
320 | tasklet_kill(&vcpu->arch.tasklet); | |
321 | ||
73e75b41 | 322 | kvmppc_remove_vcpu_debugfs(vcpu); |
db93f574 | 323 | kvmppc_core_vcpu_free(vcpu); |
bbf45ba5 HB |
324 | } |
325 | ||
326 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) | |
327 | { | |
328 | kvm_arch_vcpu_free(vcpu); | |
329 | } | |
330 | ||
331 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) | |
332 | { | |
9dd921cf | 333 | return kvmppc_core_pending_dec(vcpu); |
bbf45ba5 HB |
334 | } |
335 | ||
544c6761 AG |
336 | /* |
337 | * low level hrtimer wake routine. Because this runs in hardirq context | |
338 | * we schedule a tasklet to do the real work. | |
339 | */ | |
340 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) | |
341 | { | |
342 | struct kvm_vcpu *vcpu; | |
343 | ||
344 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); | |
345 | tasklet_schedule(&vcpu->arch.tasklet); | |
346 | ||
347 | return HRTIMER_NORESTART; | |
348 | } | |
349 | ||
bbf45ba5 HB |
350 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
351 | { | |
544c6761 AG |
352 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
353 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); | |
354 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; | |
de56a948 | 355 | vcpu->arch.dec_expires = ~(u64)0; |
bbf45ba5 | 356 | |
09000adb BB |
357 | #ifdef CONFIG_KVM_EXIT_TIMING |
358 | mutex_init(&vcpu->arch.exit_timing_lock); | |
359 | #endif | |
360 | ||
bbf45ba5 HB |
361 | return 0; |
362 | } | |
363 | ||
364 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
365 | { | |
ecc0981f | 366 | kvmppc_mmu_destroy(vcpu); |
bbf45ba5 HB |
367 | } |
368 | ||
369 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
370 | { | |
eab17672 SW |
371 | #ifdef CONFIG_BOOKE |
372 | /* | |
373 | * vrsave (formerly usprg0) isn't used by Linux, but may | |
374 | * be used by the guest. | |
375 | * | |
376 | * On non-booke this is associated with Altivec and | |
377 | * is handled by code in book3s.c. | |
378 | */ | |
379 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); | |
380 | #endif | |
9dd921cf | 381 | kvmppc_core_vcpu_load(vcpu, cpu); |
de56a948 | 382 | vcpu->cpu = smp_processor_id(); |
bbf45ba5 HB |
383 | } |
384 | ||
385 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) | |
386 | { | |
9dd921cf | 387 | kvmppc_core_vcpu_put(vcpu); |
eab17672 SW |
388 | #ifdef CONFIG_BOOKE |
389 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); | |
390 | #endif | |
de56a948 | 391 | vcpu->cpu = -1; |
bbf45ba5 HB |
392 | } |
393 | ||
d0bfb940 | 394 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
f5d0906b | 395 | struct kvm_guest_debug *dbg) |
bbf45ba5 | 396 | { |
f5d0906b | 397 | return -EINVAL; |
bbf45ba5 HB |
398 | } |
399 | ||
400 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, | |
401 | struct kvm_run *run) | |
402 | { | |
8e5b26b5 | 403 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
bbf45ba5 HB |
404 | } |
405 | ||
406 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, | |
407 | struct kvm_run *run) | |
408 | { | |
69b61833 | 409 | u64 uninitialized_var(gpr); |
bbf45ba5 | 410 | |
8e5b26b5 | 411 | if (run->mmio.len > sizeof(gpr)) { |
bbf45ba5 HB |
412 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
413 | return; | |
414 | } | |
415 | ||
416 | if (vcpu->arch.mmio_is_bigendian) { | |
417 | switch (run->mmio.len) { | |
b104d066 | 418 | case 8: gpr = *(u64 *)run->mmio.data; break; |
8e5b26b5 AG |
419 | case 4: gpr = *(u32 *)run->mmio.data; break; |
420 | case 2: gpr = *(u16 *)run->mmio.data; break; | |
421 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
422 | } |
423 | } else { | |
424 | /* Convert BE data from userland back to LE. */ | |
425 | switch (run->mmio.len) { | |
8e5b26b5 AG |
426 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
427 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; | |
428 | case 1: gpr = *(u8 *)run->mmio.data; break; | |
bbf45ba5 HB |
429 | } |
430 | } | |
8e5b26b5 | 431 | |
3587d534 AG |
432 | if (vcpu->arch.mmio_sign_extend) { |
433 | switch (run->mmio.len) { | |
434 | #ifdef CONFIG_PPC64 | |
435 | case 4: | |
436 | gpr = (s64)(s32)gpr; | |
437 | break; | |
438 | #endif | |
439 | case 2: | |
440 | gpr = (s64)(s16)gpr; | |
441 | break; | |
442 | case 1: | |
443 | gpr = (s64)(s8)gpr; | |
444 | break; | |
445 | } | |
446 | } | |
447 | ||
8e5b26b5 | 448 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
b104d066 AG |
449 | |
450 | switch (vcpu->arch.io_gpr & KVM_REG_EXT_MASK) { | |
451 | case KVM_REG_GPR: | |
452 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); | |
453 | break; | |
454 | case KVM_REG_FPR: | |
455 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
456 | break; | |
287d5611 | 457 | #ifdef CONFIG_PPC_BOOK3S |
b104d066 AG |
458 | case KVM_REG_QPR: |
459 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
460 | break; | |
461 | case KVM_REG_FQPR: | |
462 | vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
463 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr; | |
464 | break; | |
287d5611 | 465 | #endif |
b104d066 AG |
466 | default: |
467 | BUG(); | |
468 | } | |
bbf45ba5 HB |
469 | } |
470 | ||
471 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
472 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
473 | { | |
474 | if (bytes > sizeof(run->mmio.data)) { | |
475 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
476 | run->mmio.len); | |
477 | } | |
478 | ||
479 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
480 | run->mmio.len = bytes; | |
481 | run->mmio.is_write = 0; | |
482 | ||
483 | vcpu->arch.io_gpr = rt; | |
484 | vcpu->arch.mmio_is_bigendian = is_bigendian; | |
485 | vcpu->mmio_needed = 1; | |
486 | vcpu->mmio_is_write = 0; | |
3587d534 | 487 | vcpu->arch.mmio_sign_extend = 0; |
bbf45ba5 HB |
488 | |
489 | return EMULATE_DO_MMIO; | |
490 | } | |
491 | ||
3587d534 AG |
492 | /* Same as above, but sign extends */ |
493 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, | |
494 | unsigned int rt, unsigned int bytes, int is_bigendian) | |
495 | { | |
496 | int r; | |
497 | ||
498 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); | |
499 | vcpu->arch.mmio_sign_extend = 1; | |
500 | ||
501 | return r; | |
502 | } | |
503 | ||
bbf45ba5 | 504 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
b104d066 | 505 | u64 val, unsigned int bytes, int is_bigendian) |
bbf45ba5 HB |
506 | { |
507 | void *data = run->mmio.data; | |
508 | ||
509 | if (bytes > sizeof(run->mmio.data)) { | |
510 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, | |
511 | run->mmio.len); | |
512 | } | |
513 | ||
514 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; | |
515 | run->mmio.len = bytes; | |
516 | run->mmio.is_write = 1; | |
517 | vcpu->mmio_needed = 1; | |
518 | vcpu->mmio_is_write = 1; | |
519 | ||
520 | /* Store the value at the lowest bytes in 'data'. */ | |
521 | if (is_bigendian) { | |
522 | switch (bytes) { | |
b104d066 | 523 | case 8: *(u64 *)data = val; break; |
bbf45ba5 HB |
524 | case 4: *(u32 *)data = val; break; |
525 | case 2: *(u16 *)data = val; break; | |
526 | case 1: *(u8 *)data = val; break; | |
527 | } | |
528 | } else { | |
529 | /* Store LE value into 'data'. */ | |
530 | switch (bytes) { | |
531 | case 4: st_le32(data, val); break; | |
532 | case 2: st_le16(data, val); break; | |
533 | case 1: *(u8 *)data = val; break; | |
534 | } | |
535 | } | |
536 | ||
537 | return EMULATE_DO_MMIO; | |
538 | } | |
539 | ||
540 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) | |
541 | { | |
542 | int r; | |
543 | sigset_t sigsaved; | |
544 | ||
545 | if (vcpu->sigset_active) | |
546 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); | |
547 | ||
548 | if (vcpu->mmio_needed) { | |
549 | if (!vcpu->mmio_is_write) | |
550 | kvmppc_complete_mmio_load(vcpu, run); | |
551 | vcpu->mmio_needed = 0; | |
552 | } else if (vcpu->arch.dcr_needed) { | |
553 | if (!vcpu->arch.dcr_is_write) | |
554 | kvmppc_complete_dcr_load(vcpu, run); | |
555 | vcpu->arch.dcr_needed = 0; | |
ad0a048b AG |
556 | } else if (vcpu->arch.osi_needed) { |
557 | u64 *gprs = run->osi.gprs; | |
558 | int i; | |
559 | ||
560 | for (i = 0; i < 32; i++) | |
561 | kvmppc_set_gpr(vcpu, i, gprs[i]); | |
562 | vcpu->arch.osi_needed = 0; | |
de56a948 PM |
563 | } else if (vcpu->arch.hcall_needed) { |
564 | int i; | |
565 | ||
566 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); | |
567 | for (i = 0; i < 9; ++i) | |
568 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); | |
569 | vcpu->arch.hcall_needed = 0; | |
bbf45ba5 HB |
570 | } |
571 | ||
df6909e5 | 572 | r = kvmppc_vcpu_run(run, vcpu); |
bbf45ba5 HB |
573 | |
574 | if (vcpu->sigset_active) | |
575 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); | |
576 | ||
577 | return r; | |
578 | } | |
579 | ||
dfd4d47e SW |
580 | void kvm_vcpu_kick(struct kvm_vcpu *vcpu) |
581 | { | |
ae21216b AG |
582 | int me; |
583 | int cpu = vcpu->cpu; | |
584 | ||
585 | me = get_cpu(); | |
4e72dbe1 | 586 | if (waitqueue_active(vcpu->arch.wqp)) { |
dfd4d47e SW |
587 | wake_up_interruptible(vcpu->arch.wqp); |
588 | vcpu->stat.halt_wakeup++; | |
ae21216b | 589 | } else if (cpu != me && cpu != -1) { |
dfd4d47e SW |
590 | smp_send_reschedule(vcpu->cpu); |
591 | } | |
ae21216b | 592 | put_cpu(); |
dfd4d47e SW |
593 | } |
594 | ||
bbf45ba5 HB |
595 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) |
596 | { | |
19ccb76a | 597 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
18978768 | 598 | kvmppc_core_dequeue_external(vcpu, irq); |
19ccb76a PM |
599 | return 0; |
600 | } | |
601 | ||
602 | kvmppc_core_queue_external(vcpu, irq); | |
dfd4d47e | 603 | kvm_vcpu_kick(vcpu); |
45c5eb67 | 604 | |
bbf45ba5 HB |
605 | return 0; |
606 | } | |
607 | ||
71fbfd5f AG |
608 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
609 | struct kvm_enable_cap *cap) | |
610 | { | |
611 | int r; | |
612 | ||
613 | if (cap->flags) | |
614 | return -EINVAL; | |
615 | ||
616 | switch (cap->cap) { | |
ad0a048b AG |
617 | case KVM_CAP_PPC_OSI: |
618 | r = 0; | |
619 | vcpu->arch.osi_enabled = true; | |
620 | break; | |
930b412a AG |
621 | case KVM_CAP_PPC_PAPR: |
622 | r = 0; | |
623 | vcpu->arch.papr_enabled = true; | |
624 | break; | |
dc83b8bc SW |
625 | #ifdef CONFIG_KVM_E500 |
626 | case KVM_CAP_SW_TLB: { | |
627 | struct kvm_config_tlb cfg; | |
628 | void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; | |
629 | ||
630 | r = -EFAULT; | |
631 | if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) | |
632 | break; | |
633 | ||
634 | r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); | |
635 | break; | |
636 | } | |
637 | #endif | |
71fbfd5f AG |
638 | default: |
639 | r = -EINVAL; | |
640 | break; | |
641 | } | |
642 | ||
af8f38b3 AG |
643 | if (!r) |
644 | r = kvmppc_sanity_check(vcpu); | |
645 | ||
71fbfd5f AG |
646 | return r; |
647 | } | |
648 | ||
e24ed81f AG |
649 | static int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, |
650 | struct kvm_one_reg *reg) | |
651 | { | |
652 | int r = -EINVAL; | |
653 | ||
654 | switch (reg->id) { | |
655 | default: | |
656 | break; | |
657 | } | |
658 | ||
659 | return r; | |
660 | } | |
661 | ||
662 | static int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, | |
663 | struct kvm_one_reg *reg) | |
664 | { | |
665 | int r = -EINVAL; | |
666 | ||
667 | switch (reg->id) { | |
668 | default: | |
669 | break; | |
670 | } | |
671 | ||
672 | return r; | |
673 | } | |
674 | ||
bbf45ba5 HB |
675 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
676 | struct kvm_mp_state *mp_state) | |
677 | { | |
678 | return -EINVAL; | |
679 | } | |
680 | ||
681 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, | |
682 | struct kvm_mp_state *mp_state) | |
683 | { | |
684 | return -EINVAL; | |
685 | } | |
686 | ||
687 | long kvm_arch_vcpu_ioctl(struct file *filp, | |
688 | unsigned int ioctl, unsigned long arg) | |
689 | { | |
690 | struct kvm_vcpu *vcpu = filp->private_data; | |
691 | void __user *argp = (void __user *)arg; | |
692 | long r; | |
693 | ||
93736624 AK |
694 | switch (ioctl) { |
695 | case KVM_INTERRUPT: { | |
bbf45ba5 HB |
696 | struct kvm_interrupt irq; |
697 | r = -EFAULT; | |
698 | if (copy_from_user(&irq, argp, sizeof(irq))) | |
93736624 | 699 | goto out; |
bbf45ba5 | 700 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
93736624 | 701 | goto out; |
bbf45ba5 | 702 | } |
19483d14 | 703 | |
71fbfd5f AG |
704 | case KVM_ENABLE_CAP: |
705 | { | |
706 | struct kvm_enable_cap cap; | |
707 | r = -EFAULT; | |
708 | if (copy_from_user(&cap, argp, sizeof(cap))) | |
709 | goto out; | |
710 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); | |
711 | break; | |
712 | } | |
dc83b8bc | 713 | |
e24ed81f AG |
714 | case KVM_SET_ONE_REG: |
715 | case KVM_GET_ONE_REG: | |
716 | { | |
717 | struct kvm_one_reg reg; | |
718 | r = -EFAULT; | |
719 | if (copy_from_user(®, argp, sizeof(reg))) | |
720 | goto out; | |
721 | if (ioctl == KVM_SET_ONE_REG) | |
722 | r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); | |
723 | else | |
724 | r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); | |
725 | break; | |
726 | } | |
727 | ||
dc83b8bc SW |
728 | #ifdef CONFIG_KVM_E500 |
729 | case KVM_DIRTY_TLB: { | |
730 | struct kvm_dirty_tlb dirty; | |
731 | r = -EFAULT; | |
732 | if (copy_from_user(&dirty, argp, sizeof(dirty))) | |
733 | goto out; | |
734 | r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); | |
735 | break; | |
736 | } | |
737 | #endif | |
738 | ||
bbf45ba5 HB |
739 | default: |
740 | r = -EINVAL; | |
741 | } | |
742 | ||
743 | out: | |
744 | return r; | |
745 | } | |
746 | ||
5b1c1493 CO |
747 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
748 | { | |
749 | return VM_FAULT_SIGBUS; | |
750 | } | |
751 | ||
15711e9c AG |
752 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
753 | { | |
754 | u32 inst_lis = 0x3c000000; | |
755 | u32 inst_ori = 0x60000000; | |
756 | u32 inst_nop = 0x60000000; | |
757 | u32 inst_sc = 0x44000002; | |
758 | u32 inst_imm_mask = 0xffff; | |
759 | ||
760 | /* | |
761 | * The hypercall to get into KVM from within guest context is as | |
762 | * follows: | |
763 | * | |
764 | * lis r0, r0, KVM_SC_MAGIC_R0@h | |
765 | * ori r0, KVM_SC_MAGIC_R0@l | |
766 | * sc | |
767 | * nop | |
768 | */ | |
769 | pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); | |
770 | pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); | |
771 | pvinfo->hcall[2] = inst_sc; | |
772 | pvinfo->hcall[3] = inst_nop; | |
773 | ||
774 | return 0; | |
775 | } | |
776 | ||
bbf45ba5 HB |
777 | long kvm_arch_vm_ioctl(struct file *filp, |
778 | unsigned int ioctl, unsigned long arg) | |
779 | { | |
15711e9c | 780 | void __user *argp = (void __user *)arg; |
bbf45ba5 HB |
781 | long r; |
782 | ||
783 | switch (ioctl) { | |
15711e9c AG |
784 | case KVM_PPC_GET_PVINFO: { |
785 | struct kvm_ppc_pvinfo pvinfo; | |
d8cdddcd | 786 | memset(&pvinfo, 0, sizeof(pvinfo)); |
15711e9c AG |
787 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
788 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { | |
789 | r = -EFAULT; | |
790 | goto out; | |
791 | } | |
792 | ||
793 | break; | |
794 | } | |
54738c09 DG |
795 | #ifdef CONFIG_KVM_BOOK3S_64_HV |
796 | case KVM_CREATE_SPAPR_TCE: { | |
797 | struct kvm_create_spapr_tce create_tce; | |
798 | struct kvm *kvm = filp->private_data; | |
799 | ||
800 | r = -EFAULT; | |
801 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) | |
802 | goto out; | |
803 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); | |
804 | goto out; | |
805 | } | |
aa04b4cc PM |
806 | |
807 | case KVM_ALLOCATE_RMA: { | |
808 | struct kvm *kvm = filp->private_data; | |
809 | struct kvm_allocate_rma rma; | |
810 | ||
811 | r = kvm_vm_ioctl_allocate_rma(kvm, &rma); | |
812 | if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) | |
813 | r = -EFAULT; | |
814 | break; | |
815 | } | |
54738c09 DG |
816 | #endif /* CONFIG_KVM_BOOK3S_64_HV */ |
817 | ||
bbf45ba5 | 818 | default: |
367e1319 | 819 | r = -ENOTTY; |
bbf45ba5 HB |
820 | } |
821 | ||
15711e9c | 822 | out: |
bbf45ba5 HB |
823 | return r; |
824 | } | |
825 | ||
826 | int kvm_arch_init(void *opaque) | |
827 | { | |
828 | return 0; | |
829 | } | |
830 | ||
831 | void kvm_arch_exit(void) | |
832 | { | |
833 | } |