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.
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.
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.
15 * Copyright IBM Corp. 2007
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
21 #include <linux/errno.h>
22 #include <linux/err.h>
23 #include <linux/kvm_host.h>
24 #include <linux/vmalloc.h>
25 #include <linux/hrtimer.h>
27 #include <linux/slab.h>
28 #include <linux/file.h>
29 #include <linux/module.h>
30 #include <asm/cputable.h>
31 #include <asm/uaccess.h>
32 #include <asm/kvm_ppc.h>
33 #include <asm/tlbflush.h>
34 #include <asm/cputhreads.h>
35 #include <asm/irqflags.h>
38 #include "../mm/mmu_decl.h"
40 #define CREATE_TRACE_POINTS
43 struct kvmppc_ops
*kvmppc_hv_ops
;
44 EXPORT_SYMBOL_GPL(kvmppc_hv_ops
);
45 struct kvmppc_ops
*kvmppc_pr_ops
;
46 EXPORT_SYMBOL_GPL(kvmppc_pr_ops
);
49 int kvm_arch_vcpu_runnable(struct kvm_vcpu
*v
)
51 return !!(v
->arch
.pending_exceptions
) ||
55 int kvm_arch_vcpu_should_kick(struct kvm_vcpu
*vcpu
)
61 * Common checks before entering the guest world. Call with interrupts
66 * == 1 if we're ready to go into guest state
67 * <= 0 if we need to go back to the host with return value
69 int kvmppc_prepare_to_enter(struct kvm_vcpu
*vcpu
)
73 WARN_ON(irqs_disabled());
84 if (signal_pending(current
)) {
85 kvmppc_account_exit(vcpu
, SIGNAL_EXITS
);
86 vcpu
->run
->exit_reason
= KVM_EXIT_INTR
;
91 vcpu
->mode
= IN_GUEST_MODE
;
94 * Reading vcpu->requests must happen after setting vcpu->mode,
95 * so we don't miss a request because the requester sees
96 * OUTSIDE_GUEST_MODE and assumes we'll be checking requests
97 * before next entering the guest (and thus doesn't IPI).
101 if (vcpu
->requests
) {
102 /* Make sure we process requests preemptable */
104 trace_kvm_check_requests(vcpu
);
105 r
= kvmppc_core_check_requests(vcpu
);
112 if (kvmppc_core_prepare_to_enter(vcpu
)) {
113 /* interrupts got enabled in between, so we
114 are back at square 1 */
126 EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter
);
128 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
129 static void kvmppc_swab_shared(struct kvm_vcpu
*vcpu
)
131 struct kvm_vcpu_arch_shared
*shared
= vcpu
->arch
.shared
;
134 shared
->sprg0
= swab64(shared
->sprg0
);
135 shared
->sprg1
= swab64(shared
->sprg1
);
136 shared
->sprg2
= swab64(shared
->sprg2
);
137 shared
->sprg3
= swab64(shared
->sprg3
);
138 shared
->srr0
= swab64(shared
->srr0
);
139 shared
->srr1
= swab64(shared
->srr1
);
140 shared
->dar
= swab64(shared
->dar
);
141 shared
->msr
= swab64(shared
->msr
);
142 shared
->dsisr
= swab32(shared
->dsisr
);
143 shared
->int_pending
= swab32(shared
->int_pending
);
144 for (i
= 0; i
< ARRAY_SIZE(shared
->sr
); i
++)
145 shared
->sr
[i
] = swab32(shared
->sr
[i
]);
149 int kvmppc_kvm_pv(struct kvm_vcpu
*vcpu
)
151 int nr
= kvmppc_get_gpr(vcpu
, 11);
153 unsigned long __maybe_unused param1
= kvmppc_get_gpr(vcpu
, 3);
154 unsigned long __maybe_unused param2
= kvmppc_get_gpr(vcpu
, 4);
155 unsigned long __maybe_unused param3
= kvmppc_get_gpr(vcpu
, 5);
156 unsigned long __maybe_unused param4
= kvmppc_get_gpr(vcpu
, 6);
157 unsigned long r2
= 0;
159 if (!(kvmppc_get_msr(vcpu
) & MSR_SF
)) {
161 param1
&= 0xffffffff;
162 param2
&= 0xffffffff;
163 param3
&= 0xffffffff;
164 param4
&= 0xffffffff;
168 case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE
):
170 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE)
171 /* Book3S can be little endian, find it out here */
172 int shared_big_endian
= true;
173 if (vcpu
->arch
.intr_msr
& MSR_LE
)
174 shared_big_endian
= false;
175 if (shared_big_endian
!= vcpu
->arch
.shared_big_endian
)
176 kvmppc_swab_shared(vcpu
);
177 vcpu
->arch
.shared_big_endian
= shared_big_endian
;
180 if (!(param2
& MAGIC_PAGE_FLAG_NOT_MAPPED_NX
)) {
182 * Older versions of the Linux magic page code had
183 * a bug where they would map their trampoline code
184 * NX. If that's the case, remove !PR NX capability.
186 vcpu
->arch
.disable_kernel_nx
= true;
187 kvm_make_request(KVM_REQ_TLB_FLUSH
, vcpu
);
190 vcpu
->arch
.magic_page_pa
= param1
& ~0xfffULL
;
191 vcpu
->arch
.magic_page_ea
= param2
& ~0xfffULL
;
193 r2
= KVM_MAGIC_FEAT_SR
| KVM_MAGIC_FEAT_MAS0_TO_SPRG7
;
198 case KVM_HCALL_TOKEN(KVM_HC_FEATURES
):
200 #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
201 /* XXX Missing magic page on 44x */
202 r2
|= (1 << KVM_FEATURE_MAGIC_PAGE
);
205 /* Second return value is in r4 */
207 case EV_HCALL_TOKEN(EV_IDLE
):
209 kvm_vcpu_block(vcpu
);
210 clear_bit(KVM_REQ_UNHALT
, &vcpu
->requests
);
213 r
= EV_UNIMPLEMENTED
;
217 kvmppc_set_gpr(vcpu
, 4, r2
);
221 EXPORT_SYMBOL_GPL(kvmppc_kvm_pv
);
223 int kvmppc_sanity_check(struct kvm_vcpu
*vcpu
)
227 /* We have to know what CPU to virtualize */
231 /* PAPR only works with book3s_64 */
232 if ((vcpu
->arch
.cpu_type
!= KVM_CPU_3S_64
) && vcpu
->arch
.papr_enabled
)
235 /* HV KVM can only do PAPR mode for now */
236 if (!vcpu
->arch
.papr_enabled
&& is_kvmppc_hv_enabled(vcpu
->kvm
))
239 #ifdef CONFIG_KVM_BOOKE_HV
240 if (!cpu_has_feature(CPU_FTR_EMB_HV
))
248 return r
? 0 : -EINVAL
;
250 EXPORT_SYMBOL_GPL(kvmppc_sanity_check
);
252 int kvmppc_emulate_mmio(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
)
254 enum emulation_result er
;
257 er
= kvmppc_emulate_instruction(run
, vcpu
);
260 /* Future optimization: only reload non-volatiles if they were
261 * actually modified. */
264 case EMULATE_DO_MMIO
:
265 run
->exit_reason
= KVM_EXIT_MMIO
;
266 /* We must reload nonvolatiles because "update" load/store
267 * instructions modify register state. */
268 /* Future optimization: only reload non-volatiles if they were
269 * actually modified. */
273 /* XXX Deliver Program interrupt to guest. */
274 printk(KERN_EMERG
"%s: emulation failed (%08x)\n", __func__
,
275 kvmppc_get_last_inst(vcpu
));
285 EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio
);
287 int kvm_arch_hardware_enable(void *garbage
)
292 void kvm_arch_hardware_disable(void *garbage
)
296 int kvm_arch_hardware_setup(void)
301 void kvm_arch_hardware_unsetup(void)
305 void kvm_arch_check_processor_compat(void *rtn
)
307 *(int *)rtn
= kvmppc_core_check_processor_compat();
310 int kvm_arch_init_vm(struct kvm
*kvm
, unsigned long type
)
312 struct kvmppc_ops
*kvm_ops
= NULL
;
314 * if we have both HV and PR enabled, default is HV
318 kvm_ops
= kvmppc_hv_ops
;
320 kvm_ops
= kvmppc_pr_ops
;
323 } else if (type
== KVM_VM_PPC_HV
) {
326 kvm_ops
= kvmppc_hv_ops
;
327 } else if (type
== KVM_VM_PPC_PR
) {
330 kvm_ops
= kvmppc_pr_ops
;
334 if (kvm_ops
->owner
&& !try_module_get(kvm_ops
->owner
))
337 kvm
->arch
.kvm_ops
= kvm_ops
;
338 return kvmppc_core_init_vm(kvm
);
343 void kvm_arch_destroy_vm(struct kvm
*kvm
)
346 struct kvm_vcpu
*vcpu
;
348 kvm_for_each_vcpu(i
, vcpu
, kvm
)
349 kvm_arch_vcpu_free(vcpu
);
351 mutex_lock(&kvm
->lock
);
352 for (i
= 0; i
< atomic_read(&kvm
->online_vcpus
); i
++)
353 kvm
->vcpus
[i
] = NULL
;
355 atomic_set(&kvm
->online_vcpus
, 0);
357 kvmppc_core_destroy_vm(kvm
);
359 mutex_unlock(&kvm
->lock
);
361 /* drop the module reference */
362 module_put(kvm
->arch
.kvm_ops
->owner
);
365 void kvm_arch_sync_events(struct kvm
*kvm
)
369 int kvm_dev_ioctl_check_extension(long ext
)
373 * Should some of this be vm ioctl ? is it possible now ?
375 int hv_enabled
= kvmppc_hv_ops
? 1 : 0;
379 case KVM_CAP_PPC_BOOKE_SREGS
:
380 case KVM_CAP_PPC_BOOKE_WATCHDOG
:
381 case KVM_CAP_PPC_EPR
:
383 case KVM_CAP_PPC_SEGSTATE
:
384 case KVM_CAP_PPC_HIOR
:
385 case KVM_CAP_PPC_PAPR
:
387 case KVM_CAP_PPC_UNSET_IRQ
:
388 case KVM_CAP_PPC_IRQ_LEVEL
:
389 case KVM_CAP_ENABLE_CAP
:
390 case KVM_CAP_ONE_REG
:
391 case KVM_CAP_IOEVENTFD
:
392 case KVM_CAP_DEVICE_CTRL
:
395 case KVM_CAP_PPC_PAIRED_SINGLES
:
396 case KVM_CAP_PPC_OSI
:
397 case KVM_CAP_PPC_GET_PVINFO
:
398 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
401 /* We support this only for PR */
404 #ifdef CONFIG_KVM_MMIO
405 case KVM_CAP_COALESCED_MMIO
:
406 r
= KVM_COALESCED_MMIO_PAGE_OFFSET
;
409 #ifdef CONFIG_KVM_MPIC
410 case KVM_CAP_IRQ_MPIC
:
415 #ifdef CONFIG_PPC_BOOK3S_64
416 case KVM_CAP_SPAPR_TCE
:
417 case KVM_CAP_PPC_ALLOC_HTAB
:
418 case KVM_CAP_PPC_RTAS
:
419 case KVM_CAP_PPC_FIXUP_HCALL
:
420 #ifdef CONFIG_KVM_XICS
421 case KVM_CAP_IRQ_XICS
:
425 #endif /* CONFIG_PPC_BOOK3S_64 */
426 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
427 case KVM_CAP_PPC_SMT
:
429 r
= threads_per_subcore
;
433 case KVM_CAP_PPC_RMA
:
435 /* PPC970 requires an RMA */
436 if (r
&& cpu_has_feature(CPU_FTR_ARCH_201
))
440 case KVM_CAP_SYNC_MMU
:
441 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
443 r
= cpu_has_feature(CPU_FTR_ARCH_206
) ? 1 : 0;
446 #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER)
452 #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
453 case KVM_CAP_PPC_HTAB_FD
:
457 case KVM_CAP_NR_VCPUS
:
459 * Recommending a number of CPUs is somewhat arbitrary; we
460 * return the number of present CPUs for -HV (since a host
461 * will have secondary threads "offline"), and for other KVM
462 * implementations just count online CPUs.
465 r
= num_present_cpus();
467 r
= num_online_cpus();
469 case KVM_CAP_MAX_VCPUS
:
472 #ifdef CONFIG_PPC_BOOK3S_64
473 case KVM_CAP_PPC_GET_SMMU_INFO
:
485 long kvm_arch_dev_ioctl(struct file
*filp
,
486 unsigned int ioctl
, unsigned long arg
)
491 void kvm_arch_free_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*free
,
492 struct kvm_memory_slot
*dont
)
494 kvmppc_core_free_memslot(kvm
, free
, dont
);
497 int kvm_arch_create_memslot(struct kvm
*kvm
, struct kvm_memory_slot
*slot
,
498 unsigned long npages
)
500 return kvmppc_core_create_memslot(kvm
, slot
, npages
);
503 void kvm_arch_memslots_updated(struct kvm
*kvm
)
507 int kvm_arch_prepare_memory_region(struct kvm
*kvm
,
508 struct kvm_memory_slot
*memslot
,
509 struct kvm_userspace_memory_region
*mem
,
510 enum kvm_mr_change change
)
512 return kvmppc_core_prepare_memory_region(kvm
, memslot
, mem
);
515 void kvm_arch_commit_memory_region(struct kvm
*kvm
,
516 struct kvm_userspace_memory_region
*mem
,
517 const struct kvm_memory_slot
*old
,
518 enum kvm_mr_change change
)
520 kvmppc_core_commit_memory_region(kvm
, mem
, old
);
523 void kvm_arch_flush_shadow_all(struct kvm
*kvm
)
527 void kvm_arch_flush_shadow_memslot(struct kvm
*kvm
,
528 struct kvm_memory_slot
*slot
)
530 kvmppc_core_flush_memslot(kvm
, slot
);
533 struct kvm_vcpu
*kvm_arch_vcpu_create(struct kvm
*kvm
, unsigned int id
)
535 struct kvm_vcpu
*vcpu
;
536 vcpu
= kvmppc_core_vcpu_create(kvm
, id
);
538 vcpu
->arch
.wqp
= &vcpu
->wq
;
539 kvmppc_create_vcpu_debugfs(vcpu
, id
);
544 int kvm_arch_vcpu_postcreate(struct kvm_vcpu
*vcpu
)
549 void kvm_arch_vcpu_free(struct kvm_vcpu
*vcpu
)
551 /* Make sure we're not using the vcpu anymore */
552 hrtimer_cancel(&vcpu
->arch
.dec_timer
);
553 tasklet_kill(&vcpu
->arch
.tasklet
);
555 kvmppc_remove_vcpu_debugfs(vcpu
);
557 switch (vcpu
->arch
.irq_type
) {
558 case KVMPPC_IRQ_MPIC
:
559 kvmppc_mpic_disconnect_vcpu(vcpu
->arch
.mpic
, vcpu
);
561 case KVMPPC_IRQ_XICS
:
562 kvmppc_xics_free_icp(vcpu
);
566 kvmppc_core_vcpu_free(vcpu
);
569 void kvm_arch_vcpu_destroy(struct kvm_vcpu
*vcpu
)
571 kvm_arch_vcpu_free(vcpu
);
574 int kvm_cpu_has_pending_timer(struct kvm_vcpu
*vcpu
)
576 return kvmppc_core_pending_dec(vcpu
);
580 * low level hrtimer wake routine. Because this runs in hardirq context
581 * we schedule a tasklet to do the real work.
583 enum hrtimer_restart
kvmppc_decrementer_wakeup(struct hrtimer
*timer
)
585 struct kvm_vcpu
*vcpu
;
587 vcpu
= container_of(timer
, struct kvm_vcpu
, arch
.dec_timer
);
588 tasklet_schedule(&vcpu
->arch
.tasklet
);
590 return HRTIMER_NORESTART
;
593 int kvm_arch_vcpu_init(struct kvm_vcpu
*vcpu
)
597 hrtimer_init(&vcpu
->arch
.dec_timer
, CLOCK_REALTIME
, HRTIMER_MODE_ABS
);
598 tasklet_init(&vcpu
->arch
.tasklet
, kvmppc_decrementer_func
, (ulong
)vcpu
);
599 vcpu
->arch
.dec_timer
.function
= kvmppc_decrementer_wakeup
;
600 vcpu
->arch
.dec_expires
= ~(u64
)0;
602 #ifdef CONFIG_KVM_EXIT_TIMING
603 mutex_init(&vcpu
->arch
.exit_timing_lock
);
605 ret
= kvmppc_subarch_vcpu_init(vcpu
);
609 void kvm_arch_vcpu_uninit(struct kvm_vcpu
*vcpu
)
611 kvmppc_mmu_destroy(vcpu
);
612 kvmppc_subarch_vcpu_uninit(vcpu
);
615 void kvm_arch_vcpu_load(struct kvm_vcpu
*vcpu
, int cpu
)
619 * vrsave (formerly usprg0) isn't used by Linux, but may
620 * be used by the guest.
622 * On non-booke this is associated with Altivec and
623 * is handled by code in book3s.c.
625 mtspr(SPRN_VRSAVE
, vcpu
->arch
.vrsave
);
627 kvmppc_core_vcpu_load(vcpu
, cpu
);
630 void kvm_arch_vcpu_put(struct kvm_vcpu
*vcpu
)
632 kvmppc_core_vcpu_put(vcpu
);
634 vcpu
->arch
.vrsave
= mfspr(SPRN_VRSAVE
);
638 static void kvmppc_complete_dcr_load(struct kvm_vcpu
*vcpu
,
641 kvmppc_set_gpr(vcpu
, vcpu
->arch
.io_gpr
, run
->dcr
.data
);
644 static void kvmppc_complete_mmio_load(struct kvm_vcpu
*vcpu
,
647 u64
uninitialized_var(gpr
);
649 if (run
->mmio
.len
> sizeof(gpr
)) {
650 printk(KERN_ERR
"bad MMIO length: %d\n", run
->mmio
.len
);
654 if (vcpu
->arch
.mmio_is_bigendian
) {
655 switch (run
->mmio
.len
) {
656 case 8: gpr
= *(u64
*)run
->mmio
.data
; break;
657 case 4: gpr
= *(u32
*)run
->mmio
.data
; break;
658 case 2: gpr
= *(u16
*)run
->mmio
.data
; break;
659 case 1: gpr
= *(u8
*)run
->mmio
.data
; break;
662 /* Convert BE data from userland back to LE. */
663 switch (run
->mmio
.len
) {
664 case 4: gpr
= ld_le32((u32
*)run
->mmio
.data
); break;
665 case 2: gpr
= ld_le16((u16
*)run
->mmio
.data
); break;
666 case 1: gpr
= *(u8
*)run
->mmio
.data
; break;
670 if (vcpu
->arch
.mmio_sign_extend
) {
671 switch (run
->mmio
.len
) {
686 kvmppc_set_gpr(vcpu
, vcpu
->arch
.io_gpr
, gpr
);
688 switch (vcpu
->arch
.io_gpr
& KVM_MMIO_REG_EXT_MASK
) {
689 case KVM_MMIO_REG_GPR
:
690 kvmppc_set_gpr(vcpu
, vcpu
->arch
.io_gpr
, gpr
);
692 case KVM_MMIO_REG_FPR
:
693 VCPU_FPR(vcpu
, vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
) = gpr
;
695 #ifdef CONFIG_PPC_BOOK3S
696 case KVM_MMIO_REG_QPR
:
697 vcpu
->arch
.qpr
[vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
] = gpr
;
699 case KVM_MMIO_REG_FQPR
:
700 VCPU_FPR(vcpu
, vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
) = gpr
;
701 vcpu
->arch
.qpr
[vcpu
->arch
.io_gpr
& KVM_MMIO_REG_MASK
] = gpr
;
709 int kvmppc_handle_load(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
710 unsigned int rt
, unsigned int bytes
,
711 int is_default_endian
)
716 if (kvmppc_need_byteswap(vcpu
)) {
717 /* Default endianness is "little endian". */
718 is_bigendian
= !is_default_endian
;
720 /* Default endianness is "big endian". */
721 is_bigendian
= is_default_endian
;
724 if (bytes
> sizeof(run
->mmio
.data
)) {
725 printk(KERN_ERR
"%s: bad MMIO length: %d\n", __func__
,
729 run
->mmio
.phys_addr
= vcpu
->arch
.paddr_accessed
;
730 run
->mmio
.len
= bytes
;
731 run
->mmio
.is_write
= 0;
733 vcpu
->arch
.io_gpr
= rt
;
734 vcpu
->arch
.mmio_is_bigendian
= is_bigendian
;
735 vcpu
->mmio_needed
= 1;
736 vcpu
->mmio_is_write
= 0;
737 vcpu
->arch
.mmio_sign_extend
= 0;
739 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
741 ret
= kvm_io_bus_read(vcpu
->kvm
, KVM_MMIO_BUS
, run
->mmio
.phys_addr
,
742 bytes
, &run
->mmio
.data
);
744 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
747 kvmppc_complete_mmio_load(vcpu
, run
);
748 vcpu
->mmio_needed
= 0;
752 return EMULATE_DO_MMIO
;
754 EXPORT_SYMBOL_GPL(kvmppc_handle_load
);
756 /* Same as above, but sign extends */
757 int kvmppc_handle_loads(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
758 unsigned int rt
, unsigned int bytes
,
759 int is_default_endian
)
763 vcpu
->arch
.mmio_sign_extend
= 1;
764 r
= kvmppc_handle_load(run
, vcpu
, rt
, bytes
, is_default_endian
);
769 int kvmppc_handle_store(struct kvm_run
*run
, struct kvm_vcpu
*vcpu
,
770 u64 val
, unsigned int bytes
, int is_default_endian
)
772 void *data
= run
->mmio
.data
;
776 if (kvmppc_need_byteswap(vcpu
)) {
777 /* Default endianness is "little endian". */
778 is_bigendian
= !is_default_endian
;
780 /* Default endianness is "big endian". */
781 is_bigendian
= is_default_endian
;
784 if (bytes
> sizeof(run
->mmio
.data
)) {
785 printk(KERN_ERR
"%s: bad MMIO length: %d\n", __func__
,
789 run
->mmio
.phys_addr
= vcpu
->arch
.paddr_accessed
;
790 run
->mmio
.len
= bytes
;
791 run
->mmio
.is_write
= 1;
792 vcpu
->mmio_needed
= 1;
793 vcpu
->mmio_is_write
= 1;
795 /* Store the value at the lowest bytes in 'data'. */
798 case 8: *(u64
*)data
= val
; break;
799 case 4: *(u32
*)data
= val
; break;
800 case 2: *(u16
*)data
= val
; break;
801 case 1: *(u8
*)data
= val
; break;
804 /* Store LE value into 'data'. */
806 case 4: st_le32(data
, val
); break;
807 case 2: st_le16(data
, val
); break;
808 case 1: *(u8
*)data
= val
; break;
812 idx
= srcu_read_lock(&vcpu
->kvm
->srcu
);
814 ret
= kvm_io_bus_write(vcpu
->kvm
, KVM_MMIO_BUS
, run
->mmio
.phys_addr
,
815 bytes
, &run
->mmio
.data
);
817 srcu_read_unlock(&vcpu
->kvm
->srcu
, idx
);
820 vcpu
->mmio_needed
= 0;
824 return EMULATE_DO_MMIO
;
826 EXPORT_SYMBOL_GPL(kvmppc_handle_store
);
828 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu
*vcpu
, struct kvm_run
*run
)
833 if (vcpu
->sigset_active
)
834 sigprocmask(SIG_SETMASK
, &vcpu
->sigset
, &sigsaved
);
836 if (vcpu
->mmio_needed
) {
837 if (!vcpu
->mmio_is_write
)
838 kvmppc_complete_mmio_load(vcpu
, run
);
839 vcpu
->mmio_needed
= 0;
840 } else if (vcpu
->arch
.dcr_needed
) {
841 if (!vcpu
->arch
.dcr_is_write
)
842 kvmppc_complete_dcr_load(vcpu
, run
);
843 vcpu
->arch
.dcr_needed
= 0;
844 } else if (vcpu
->arch
.osi_needed
) {
845 u64
*gprs
= run
->osi
.gprs
;
848 for (i
= 0; i
< 32; i
++)
849 kvmppc_set_gpr(vcpu
, i
, gprs
[i
]);
850 vcpu
->arch
.osi_needed
= 0;
851 } else if (vcpu
->arch
.hcall_needed
) {
854 kvmppc_set_gpr(vcpu
, 3, run
->papr_hcall
.ret
);
855 for (i
= 0; i
< 9; ++i
)
856 kvmppc_set_gpr(vcpu
, 4 + i
, run
->papr_hcall
.args
[i
]);
857 vcpu
->arch
.hcall_needed
= 0;
859 } else if (vcpu
->arch
.epr_needed
) {
860 kvmppc_set_epr(vcpu
, run
->epr
.epr
);
861 vcpu
->arch
.epr_needed
= 0;
865 r
= kvmppc_vcpu_run(run
, vcpu
);
867 if (vcpu
->sigset_active
)
868 sigprocmask(SIG_SETMASK
, &sigsaved
, NULL
);
873 int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu
*vcpu
, struct kvm_interrupt
*irq
)
875 if (irq
->irq
== KVM_INTERRUPT_UNSET
) {
876 kvmppc_core_dequeue_external(vcpu
);
880 kvmppc_core_queue_external(vcpu
, irq
);
887 static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu
*vcpu
,
888 struct kvm_enable_cap
*cap
)
896 case KVM_CAP_PPC_OSI
:
898 vcpu
->arch
.osi_enabled
= true;
900 case KVM_CAP_PPC_PAPR
:
902 vcpu
->arch
.papr_enabled
= true;
904 case KVM_CAP_PPC_EPR
:
907 vcpu
->arch
.epr_flags
|= KVMPPC_EPR_USER
;
909 vcpu
->arch
.epr_flags
&= ~KVMPPC_EPR_USER
;
912 case KVM_CAP_PPC_BOOKE_WATCHDOG
:
914 vcpu
->arch
.watchdog_enabled
= true;
917 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
918 case KVM_CAP_SW_TLB
: {
919 struct kvm_config_tlb cfg
;
920 void __user
*user_ptr
= (void __user
*)(uintptr_t)cap
->args
[0];
923 if (copy_from_user(&cfg
, user_ptr
, sizeof(cfg
)))
926 r
= kvm_vcpu_ioctl_config_tlb(vcpu
, &cfg
);
930 #ifdef CONFIG_KVM_MPIC
931 case KVM_CAP_IRQ_MPIC
: {
933 struct kvm_device
*dev
;
936 f
= fdget(cap
->args
[0]);
941 dev
= kvm_device_from_filp(f
.file
);
943 r
= kvmppc_mpic_connect_vcpu(dev
, vcpu
, cap
->args
[1]);
949 #ifdef CONFIG_KVM_XICS
950 case KVM_CAP_IRQ_XICS
: {
952 struct kvm_device
*dev
;
955 f
= fdget(cap
->args
[0]);
960 dev
= kvm_device_from_filp(f
.file
);
962 r
= kvmppc_xics_connect_vcpu(dev
, vcpu
, cap
->args
[1]);
967 #endif /* CONFIG_KVM_XICS */
974 r
= kvmppc_sanity_check(vcpu
);
979 int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu
*vcpu
,
980 struct kvm_mp_state
*mp_state
)
985 int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu
*vcpu
,
986 struct kvm_mp_state
*mp_state
)
991 long kvm_arch_vcpu_ioctl(struct file
*filp
,
992 unsigned int ioctl
, unsigned long arg
)
994 struct kvm_vcpu
*vcpu
= filp
->private_data
;
995 void __user
*argp
= (void __user
*)arg
;
999 case KVM_INTERRUPT
: {
1000 struct kvm_interrupt irq
;
1002 if (copy_from_user(&irq
, argp
, sizeof(irq
)))
1004 r
= kvm_vcpu_ioctl_interrupt(vcpu
, &irq
);
1008 case KVM_ENABLE_CAP
:
1010 struct kvm_enable_cap cap
;
1012 if (copy_from_user(&cap
, argp
, sizeof(cap
)))
1014 r
= kvm_vcpu_ioctl_enable_cap(vcpu
, &cap
);
1018 case KVM_SET_ONE_REG
:
1019 case KVM_GET_ONE_REG
:
1021 struct kvm_one_reg reg
;
1023 if (copy_from_user(®
, argp
, sizeof(reg
)))
1025 if (ioctl
== KVM_SET_ONE_REG
)
1026 r
= kvm_vcpu_ioctl_set_one_reg(vcpu
, ®
);
1028 r
= kvm_vcpu_ioctl_get_one_reg(vcpu
, ®
);
1032 #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
1033 case KVM_DIRTY_TLB
: {
1034 struct kvm_dirty_tlb dirty
;
1036 if (copy_from_user(&dirty
, argp
, sizeof(dirty
)))
1038 r
= kvm_vcpu_ioctl_dirty_tlb(vcpu
, &dirty
);
1050 int kvm_arch_vcpu_fault(struct kvm_vcpu
*vcpu
, struct vm_fault
*vmf
)
1052 return VM_FAULT_SIGBUS
;
1055 static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo
*pvinfo
)
1057 u32 inst_nop
= 0x60000000;
1058 #ifdef CONFIG_KVM_BOOKE_HV
1059 u32 inst_sc1
= 0x44000022;
1060 pvinfo
->hcall
[0] = cpu_to_be32(inst_sc1
);
1061 pvinfo
->hcall
[1] = cpu_to_be32(inst_nop
);
1062 pvinfo
->hcall
[2] = cpu_to_be32(inst_nop
);
1063 pvinfo
->hcall
[3] = cpu_to_be32(inst_nop
);
1065 u32 inst_lis
= 0x3c000000;
1066 u32 inst_ori
= 0x60000000;
1067 u32 inst_sc
= 0x44000002;
1068 u32 inst_imm_mask
= 0xffff;
1071 * The hypercall to get into KVM from within guest context is as
1074 * lis r0, r0, KVM_SC_MAGIC_R0@h
1075 * ori r0, KVM_SC_MAGIC_R0@l
1079 pvinfo
->hcall
[0] = cpu_to_be32(inst_lis
| ((KVM_SC_MAGIC_R0
>> 16) & inst_imm_mask
));
1080 pvinfo
->hcall
[1] = cpu_to_be32(inst_ori
| (KVM_SC_MAGIC_R0
& inst_imm_mask
));
1081 pvinfo
->hcall
[2] = cpu_to_be32(inst_sc
);
1082 pvinfo
->hcall
[3] = cpu_to_be32(inst_nop
);
1085 pvinfo
->flags
= KVM_PPC_PVINFO_FLAGS_EV_IDLE
;
1090 int kvm_vm_ioctl_irq_line(struct kvm
*kvm
, struct kvm_irq_level
*irq_event
,
1093 if (!irqchip_in_kernel(kvm
))
1096 irq_event
->status
= kvm_set_irq(kvm
, KVM_USERSPACE_IRQ_SOURCE_ID
,
1097 irq_event
->irq
, irq_event
->level
,
1102 long kvm_arch_vm_ioctl(struct file
*filp
,
1103 unsigned int ioctl
, unsigned long arg
)
1105 struct kvm
*kvm __maybe_unused
= filp
->private_data
;
1106 void __user
*argp
= (void __user
*)arg
;
1110 case KVM_PPC_GET_PVINFO
: {
1111 struct kvm_ppc_pvinfo pvinfo
;
1112 memset(&pvinfo
, 0, sizeof(pvinfo
));
1113 r
= kvm_vm_ioctl_get_pvinfo(&pvinfo
);
1114 if (copy_to_user(argp
, &pvinfo
, sizeof(pvinfo
))) {
1121 #ifdef CONFIG_PPC_BOOK3S_64
1122 case KVM_CREATE_SPAPR_TCE
: {
1123 struct kvm_create_spapr_tce create_tce
;
1126 if (copy_from_user(&create_tce
, argp
, sizeof(create_tce
)))
1128 r
= kvm_vm_ioctl_create_spapr_tce(kvm
, &create_tce
);
1131 case KVM_PPC_GET_SMMU_INFO
: {
1132 struct kvm_ppc_smmu_info info
;
1133 struct kvm
*kvm
= filp
->private_data
;
1135 memset(&info
, 0, sizeof(info
));
1136 r
= kvm
->arch
.kvm_ops
->get_smmu_info(kvm
, &info
);
1137 if (r
>= 0 && copy_to_user(argp
, &info
, sizeof(info
)))
1141 case KVM_PPC_RTAS_DEFINE_TOKEN
: {
1142 struct kvm
*kvm
= filp
->private_data
;
1144 r
= kvm_vm_ioctl_rtas_define_token(kvm
, argp
);
1148 struct kvm
*kvm
= filp
->private_data
;
1149 r
= kvm
->arch
.kvm_ops
->arch_vm_ioctl(filp
, ioctl
, arg
);
1151 #else /* CONFIG_PPC_BOOK3S_64 */
1160 static unsigned long lpid_inuse
[BITS_TO_LONGS(KVMPPC_NR_LPIDS
)];
1161 static unsigned long nr_lpids
;
1163 long kvmppc_alloc_lpid(void)
1168 lpid
= find_first_zero_bit(lpid_inuse
, KVMPPC_NR_LPIDS
);
1169 if (lpid
>= nr_lpids
) {
1170 pr_err("%s: No LPIDs free\n", __func__
);
1173 } while (test_and_set_bit(lpid
, lpid_inuse
));
1177 EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid
);
1179 void kvmppc_claim_lpid(long lpid
)
1181 set_bit(lpid
, lpid_inuse
);
1183 EXPORT_SYMBOL_GPL(kvmppc_claim_lpid
);
1185 void kvmppc_free_lpid(long lpid
)
1187 clear_bit(lpid
, lpid_inuse
);
1189 EXPORT_SYMBOL_GPL(kvmppc_free_lpid
);
1191 void kvmppc_init_lpid(unsigned long nr_lpids_param
)
1193 nr_lpids
= min_t(unsigned long, KVMPPC_NR_LPIDS
, nr_lpids_param
);
1194 memset(lpid_inuse
, 0, sizeof(lpid_inuse
));
1196 EXPORT_SYMBOL_GPL(kvmppc_init_lpid
);
1198 int kvm_arch_init(void *opaque
)
1203 void kvm_arch_exit(void)