blob: 83da447cb7754796bf626e072df803d37f32c367 [file] [log] [blame]
Christoffer Dall494b00c2013-03-05 00:34:41 +00001/*
2 * ARM implementation of KVM hooks
3 *
4 * Copyright Christoffer Dall 2009-2010
5 *
6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
7 * See the COPYING file in the top-level directory.
8 *
9 */
10
Peter Maydell74c21bd2015-12-07 16:23:44 +000011#include "qemu/osdep.h"
Christoffer Dall494b00c2013-03-05 00:34:41 +000012#include <sys/ioctl.h>
13#include <sys/mman.h>
14
15#include <linux/kvm.h>
16
17#include "qemu-common.h"
18#include "qemu/timer.h"
Alex Bennée2ecb2022015-12-17 13:37:15 +000019#include "qemu/error-report.h"
Christoffer Dall494b00c2013-03-05 00:34:41 +000020#include "sysemu/sysemu.h"
21#include "sysemu/kvm.h"
Peter Maydelleb035b42013-03-05 00:34:42 +000022#include "kvm_arm.h"
Christoffer Dall494b00c2013-03-05 00:34:41 +000023#include "cpu.h"
Alex Bennée38df27c2014-12-11 12:07:53 +000024#include "internals.h"
Peter Maydellbd2be152013-04-09 15:26:55 +010025#include "hw/arm/arm.h"
Paolo Bonzini4c663752015-04-08 13:30:58 +020026#include "exec/memattrs.h"
Paolo Bonzini15eafc22015-12-17 17:16:08 +010027#include "hw/boards.h"
Paolo Bonzini03dd0242015-12-15 13:16:16 +010028#include "qemu/log.h"
Christoffer Dall494b00c2013-03-05 00:34:41 +000029
30const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
31 KVM_CAP_LAST_INFO
32};
33
Alex Bennée1a1753f2015-04-01 17:57:30 +010034static bool cap_has_mp_state;
35
Pranavkumar Sawargaonkar228d5e02014-06-19 18:06:26 +010036int kvm_arm_vcpu_init(CPUState *cs)
37{
38 ARMCPU *cpu = ARM_CPU(cs);
39 struct kvm_vcpu_init init;
40
41 init.target = cpu->kvm_target;
42 memcpy(init.features, cpu->kvm_init_features, sizeof(init.features));
43
44 return kvm_vcpu_ioctl(cs, KVM_ARM_VCPU_INIT, &init);
45}
46
Peter Maydella96c0512013-11-22 17:17:17 +000047bool kvm_arm_create_scratch_host_vcpu(const uint32_t *cpus_to_try,
48 int *fdarray,
49 struct kvm_vcpu_init *init)
50{
51 int ret, kvmfd = -1, vmfd = -1, cpufd = -1;
52
53 kvmfd = qemu_open("/dev/kvm", O_RDWR);
54 if (kvmfd < 0) {
55 goto err;
56 }
57 vmfd = ioctl(kvmfd, KVM_CREATE_VM, 0);
58 if (vmfd < 0) {
59 goto err;
60 }
61 cpufd = ioctl(vmfd, KVM_CREATE_VCPU, 0);
62 if (cpufd < 0) {
63 goto err;
64 }
65
Peter Xu2f340e92016-03-30 17:27:24 +010066 if (!init) {
67 /* Caller doesn't want the VCPU to be initialized, so skip it */
68 goto finish;
69 }
70
Peter Maydella96c0512013-11-22 17:17:17 +000071 ret = ioctl(vmfd, KVM_ARM_PREFERRED_TARGET, init);
72 if (ret >= 0) {
73 ret = ioctl(cpufd, KVM_ARM_VCPU_INIT, init);
74 if (ret < 0) {
75 goto err;
76 }
Peter Xu2f340e92016-03-30 17:27:24 +010077 } else if (cpus_to_try) {
Peter Maydella96c0512013-11-22 17:17:17 +000078 /* Old kernel which doesn't know about the
79 * PREFERRED_TARGET ioctl: we know it will only support
80 * creating one kind of guest CPU which is its preferred
81 * CPU type.
82 */
83 while (*cpus_to_try != QEMU_KVM_ARM_TARGET_NONE) {
84 init->target = *cpus_to_try++;
85 memset(init->features, 0, sizeof(init->features));
86 ret = ioctl(cpufd, KVM_ARM_VCPU_INIT, init);
87 if (ret >= 0) {
88 break;
89 }
90 }
91 if (ret < 0) {
92 goto err;
93 }
Peter Xu2f340e92016-03-30 17:27:24 +010094 } else {
95 /* Treat a NULL cpus_to_try argument the same as an empty
96 * list, which means we will fail the call since this must
97 * be an old kernel which doesn't support PREFERRED_TARGET.
98 */
99 goto err;
Peter Maydella96c0512013-11-22 17:17:17 +0000100 }
101
Peter Xu2f340e92016-03-30 17:27:24 +0100102finish:
Peter Maydella96c0512013-11-22 17:17:17 +0000103 fdarray[0] = kvmfd;
104 fdarray[1] = vmfd;
105 fdarray[2] = cpufd;
106
107 return true;
108
109err:
110 if (cpufd >= 0) {
111 close(cpufd);
112 }
113 if (vmfd >= 0) {
114 close(vmfd);
115 }
116 if (kvmfd >= 0) {
117 close(kvmfd);
118 }
119
120 return false;
121}
122
123void kvm_arm_destroy_scratch_host_vcpu(int *fdarray)
124{
125 int i;
126
127 for (i = 2; i >= 0; i--) {
128 close(fdarray[i]);
129 }
130}
131
Peter Maydella96c0512013-11-22 17:17:17 +0000132static void kvm_arm_host_cpu_class_init(ObjectClass *oc, void *data)
133{
134 ARMHostCPUClass *ahcc = ARM_HOST_CPU_CLASS(oc);
135
136 /* All we really need to set up for the 'host' CPU
137 * is the feature bits -- we rely on the fact that the
138 * various ID register values in ARMCPU are only used for
139 * TCG CPUs.
140 */
141 if (!kvm_arm_get_host_cpu_features(ahcc)) {
142 fprintf(stderr, "Failed to retrieve host CPU features!\n");
143 abort();
144 }
145}
146
147static void kvm_arm_host_cpu_initfn(Object *obj)
148{
149 ARMHostCPUClass *ahcc = ARM_HOST_CPU_GET_CLASS(obj);
150 ARMCPU *cpu = ARM_CPU(obj);
151 CPUARMState *env = &cpu->env;
152
153 cpu->kvm_target = ahcc->target;
154 cpu->dtb_compatible = ahcc->dtb_compatible;
155 env->features = ahcc->features;
156}
157
158static const TypeInfo host_arm_cpu_type_info = {
159 .name = TYPE_ARM_HOST_CPU,
Mian M. Hamayun26861c72013-12-17 19:42:30 +0000160#ifdef TARGET_AARCH64
161 .parent = TYPE_AARCH64_CPU,
162#else
Peter Maydella96c0512013-11-22 17:17:17 +0000163 .parent = TYPE_ARM_CPU,
Mian M. Hamayun26861c72013-12-17 19:42:30 +0000164#endif
Peter Maydella96c0512013-11-22 17:17:17 +0000165 .instance_init = kvm_arm_host_cpu_initfn,
166 .class_init = kvm_arm_host_cpu_class_init,
167 .class_size = sizeof(ARMHostCPUClass),
168};
169
Marcel Apfelbaumb16565b2015-02-04 17:43:51 +0200170int kvm_arch_init(MachineState *ms, KVMState *s)
Christoffer Dall494b00c2013-03-05 00:34:41 +0000171{
172 /* For ARM interrupt delivery is always asynchronous,
173 * whether we are using an in-kernel VGIC or not.
174 */
175 kvm_async_interrupts_allowed = true;
Peter Maydella96c0512013-11-22 17:17:17 +0000176
Alex Bennée1a1753f2015-04-01 17:57:30 +0100177 cap_has_mp_state = kvm_check_extension(s, KVM_CAP_MP_STATE);
178
Peter Maydella96c0512013-11-22 17:17:17 +0000179 type_register_static(&host_arm_cpu_type_info);
180
Christoffer Dall494b00c2013-03-05 00:34:41 +0000181 return 0;
182}
183
184unsigned long kvm_arch_vcpu_id(CPUState *cpu)
185{
186 return cpu->cpu_index;
187}
188
Peter Maydelleb035b42013-03-05 00:34:42 +0000189/* We track all the KVM devices which need their memory addresses
190 * passing to the kernel in a list of these structures.
191 * When board init is complete we run through the list and
192 * tell the kernel the base addresses of the memory regions.
193 * We use a MemoryListener to track mapping and unmapping of
194 * the regions during board creation, so the board models don't
195 * need to do anything special for the KVM case.
196 */
197typedef struct KVMDevice {
198 struct kvm_arm_device_addr kda;
Christoffer Dall1da41cc2014-02-26 17:20:00 +0000199 struct kvm_device_attr kdattr;
Peter Maydelleb035b42013-03-05 00:34:42 +0000200 MemoryRegion *mr;
201 QSLIST_ENTRY(KVMDevice) entries;
Christoffer Dall1da41cc2014-02-26 17:20:00 +0000202 int dev_fd;
Peter Maydelleb035b42013-03-05 00:34:42 +0000203} KVMDevice;
204
205static QSLIST_HEAD(kvm_devices_head, KVMDevice) kvm_devices_head;
206
207static void kvm_arm_devlistener_add(MemoryListener *listener,
208 MemoryRegionSection *section)
209{
210 KVMDevice *kd;
211
212 QSLIST_FOREACH(kd, &kvm_devices_head, entries) {
213 if (section->mr == kd->mr) {
214 kd->kda.addr = section->offset_within_address_space;
215 }
216 }
217}
218
219static void kvm_arm_devlistener_del(MemoryListener *listener,
220 MemoryRegionSection *section)
221{
222 KVMDevice *kd;
223
224 QSLIST_FOREACH(kd, &kvm_devices_head, entries) {
225 if (section->mr == kd->mr) {
226 kd->kda.addr = -1;
227 }
228 }
229}
230
231static MemoryListener devlistener = {
232 .region_add = kvm_arm_devlistener_add,
233 .region_del = kvm_arm_devlistener_del,
234};
235
Christoffer Dall1da41cc2014-02-26 17:20:00 +0000236static void kvm_arm_set_device_addr(KVMDevice *kd)
237{
238 struct kvm_device_attr *attr = &kd->kdattr;
239 int ret;
240
241 /* If the device control API is available and we have a device fd on the
242 * KVMDevice struct, let's use the newer API
243 */
244 if (kd->dev_fd >= 0) {
245 uint64_t addr = kd->kda.addr;
246 attr->addr = (uintptr_t)&addr;
247 ret = kvm_device_ioctl(kd->dev_fd, KVM_SET_DEVICE_ATTR, attr);
248 } else {
249 ret = kvm_vm_ioctl(kvm_state, KVM_ARM_SET_DEVICE_ADDR, &kd->kda);
250 }
251
252 if (ret < 0) {
253 fprintf(stderr, "Failed to set device address: %s\n",
254 strerror(-ret));
255 abort();
256 }
257}
258
Peter Maydelleb035b42013-03-05 00:34:42 +0000259static void kvm_arm_machine_init_done(Notifier *notifier, void *data)
260{
261 KVMDevice *kd, *tkd;
262
263 memory_listener_unregister(&devlistener);
264 QSLIST_FOREACH_SAFE(kd, &kvm_devices_head, entries, tkd) {
265 if (kd->kda.addr != -1) {
Christoffer Dall1da41cc2014-02-26 17:20:00 +0000266 kvm_arm_set_device_addr(kd);
Peter Maydelleb035b42013-03-05 00:34:42 +0000267 }
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200268 memory_region_unref(kd->mr);
Peter Maydelleb035b42013-03-05 00:34:42 +0000269 g_free(kd);
270 }
271}
272
273static Notifier notify = {
274 .notify = kvm_arm_machine_init_done,
275};
276
Christoffer Dall1da41cc2014-02-26 17:20:00 +0000277void kvm_arm_register_device(MemoryRegion *mr, uint64_t devid, uint64_t group,
278 uint64_t attr, int dev_fd)
Peter Maydelleb035b42013-03-05 00:34:42 +0000279{
280 KVMDevice *kd;
281
282 if (!kvm_irqchip_in_kernel()) {
283 return;
284 }
285
286 if (QSLIST_EMPTY(&kvm_devices_head)) {
287 memory_listener_register(&devlistener, NULL);
288 qemu_add_machine_init_done_notifier(&notify);
289 }
290 kd = g_new0(KVMDevice, 1);
291 kd->mr = mr;
292 kd->kda.id = devid;
293 kd->kda.addr = -1;
Christoffer Dall1da41cc2014-02-26 17:20:00 +0000294 kd->kdattr.flags = 0;
295 kd->kdattr.group = group;
296 kd->kdattr.attr = attr;
297 kd->dev_fd = dev_fd;
Peter Maydelleb035b42013-03-05 00:34:42 +0000298 QSLIST_INSERT_HEAD(&kvm_devices_head, kd, entries);
Paolo Bonzinidfde4e62013-05-06 10:46:11 +0200299 memory_region_ref(kd->mr);
Peter Maydelleb035b42013-03-05 00:34:42 +0000300}
301
Alex Bennée38df27c2014-12-11 12:07:53 +0000302static int compare_u64(const void *a, const void *b)
303{
304 if (*(uint64_t *)a > *(uint64_t *)b) {
305 return 1;
306 }
307 if (*(uint64_t *)a < *(uint64_t *)b) {
308 return -1;
309 }
310 return 0;
311}
312
313/* Initialize the CPUState's cpreg list according to the kernel's
314 * definition of what CPU registers it knows about (and throw away
315 * the previous TCG-created cpreg list).
316 */
317int kvm_arm_init_cpreg_list(ARMCPU *cpu)
318{
319 struct kvm_reg_list rl;
320 struct kvm_reg_list *rlp;
321 int i, ret, arraylen;
322 CPUState *cs = CPU(cpu);
323
324 rl.n = 0;
325 ret = kvm_vcpu_ioctl(cs, KVM_GET_REG_LIST, &rl);
326 if (ret != -E2BIG) {
327 return ret;
328 }
329 rlp = g_malloc(sizeof(struct kvm_reg_list) + rl.n * sizeof(uint64_t));
330 rlp->n = rl.n;
331 ret = kvm_vcpu_ioctl(cs, KVM_GET_REG_LIST, rlp);
332 if (ret) {
333 goto out;
334 }
335 /* Sort the list we get back from the kernel, since cpreg_tuples
336 * must be in strictly ascending order.
337 */
338 qsort(&rlp->reg, rlp->n, sizeof(rlp->reg[0]), compare_u64);
339
340 for (i = 0, arraylen = 0; i < rlp->n; i++) {
341 if (!kvm_arm_reg_syncs_via_cpreg_list(rlp->reg[i])) {
342 continue;
343 }
344 switch (rlp->reg[i] & KVM_REG_SIZE_MASK) {
345 case KVM_REG_SIZE_U32:
346 case KVM_REG_SIZE_U64:
347 break;
348 default:
349 fprintf(stderr, "Can't handle size of register in kernel list\n");
350 ret = -EINVAL;
351 goto out;
352 }
353
354 arraylen++;
355 }
356
357 cpu->cpreg_indexes = g_renew(uint64_t, cpu->cpreg_indexes, arraylen);
358 cpu->cpreg_values = g_renew(uint64_t, cpu->cpreg_values, arraylen);
359 cpu->cpreg_vmstate_indexes = g_renew(uint64_t, cpu->cpreg_vmstate_indexes,
360 arraylen);
361 cpu->cpreg_vmstate_values = g_renew(uint64_t, cpu->cpreg_vmstate_values,
362 arraylen);
363 cpu->cpreg_array_len = arraylen;
364 cpu->cpreg_vmstate_array_len = arraylen;
365
366 for (i = 0, arraylen = 0; i < rlp->n; i++) {
367 uint64_t regidx = rlp->reg[i];
368 if (!kvm_arm_reg_syncs_via_cpreg_list(regidx)) {
369 continue;
370 }
371 cpu->cpreg_indexes[arraylen] = regidx;
372 arraylen++;
373 }
374 assert(cpu->cpreg_array_len == arraylen);
375
376 if (!write_kvmstate_to_list(cpu)) {
377 /* Shouldn't happen unless kernel is inconsistent about
378 * what registers exist.
379 */
380 fprintf(stderr, "Initial read of kernel register state failed\n");
381 ret = -EINVAL;
382 goto out;
383 }
384
385out:
386 g_free(rlp);
387 return ret;
388}
389
Peter Maydellff047452013-06-25 18:16:07 +0100390bool write_kvmstate_to_list(ARMCPU *cpu)
391{
392 CPUState *cs = CPU(cpu);
393 int i;
394 bool ok = true;
395
396 for (i = 0; i < cpu->cpreg_array_len; i++) {
397 struct kvm_one_reg r;
398 uint64_t regidx = cpu->cpreg_indexes[i];
399 uint32_t v32;
400 int ret;
401
402 r.id = regidx;
403
404 switch (regidx & KVM_REG_SIZE_MASK) {
405 case KVM_REG_SIZE_U32:
406 r.addr = (uintptr_t)&v32;
407 ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &r);
408 if (!ret) {
409 cpu->cpreg_values[i] = v32;
410 }
411 break;
412 case KVM_REG_SIZE_U64:
413 r.addr = (uintptr_t)(cpu->cpreg_values + i);
414 ret = kvm_vcpu_ioctl(cs, KVM_GET_ONE_REG, &r);
415 break;
416 default:
417 abort();
418 }
419 if (ret) {
420 ok = false;
421 }
422 }
423 return ok;
424}
425
Christoffer Dall4b7a6bf2015-07-21 11:18:45 +0100426bool write_list_to_kvmstate(ARMCPU *cpu, int level)
Peter Maydellff047452013-06-25 18:16:07 +0100427{
428 CPUState *cs = CPU(cpu);
429 int i;
430 bool ok = true;
431
432 for (i = 0; i < cpu->cpreg_array_len; i++) {
433 struct kvm_one_reg r;
434 uint64_t regidx = cpu->cpreg_indexes[i];
435 uint32_t v32;
436 int ret;
437
Christoffer Dall4b7a6bf2015-07-21 11:18:45 +0100438 if (kvm_arm_cpreg_level(regidx) > level) {
439 continue;
440 }
441
Peter Maydellff047452013-06-25 18:16:07 +0100442 r.id = regidx;
443 switch (regidx & KVM_REG_SIZE_MASK) {
444 case KVM_REG_SIZE_U32:
445 v32 = cpu->cpreg_values[i];
446 r.addr = (uintptr_t)&v32;
447 break;
448 case KVM_REG_SIZE_U64:
449 r.addr = (uintptr_t)(cpu->cpreg_values + i);
450 break;
451 default:
452 abort();
453 }
454 ret = kvm_vcpu_ioctl(cs, KVM_SET_ONE_REG, &r);
455 if (ret) {
456 /* We might fail for "unknown register" and also for
457 * "you tried to set a register which is constant with
458 * a different value from what it actually contains".
459 */
460 ok = false;
461 }
462 }
463 return ok;
464}
465
Alex Bennée38df27c2014-12-11 12:07:53 +0000466void kvm_arm_reset_vcpu(ARMCPU *cpu)
467{
Christoffer Dall25f28952014-12-11 12:07:53 +0000468 int ret;
469
Alex Bennée38df27c2014-12-11 12:07:53 +0000470 /* Re-init VCPU so that all registers are set to
471 * their respective reset values.
472 */
Christoffer Dall25f28952014-12-11 12:07:53 +0000473 ret = kvm_arm_vcpu_init(CPU(cpu));
474 if (ret < 0) {
475 fprintf(stderr, "kvm_arm_vcpu_init failed: %s\n", strerror(-ret));
476 abort();
477 }
478 if (!write_kvmstate_to_list(cpu)) {
479 fprintf(stderr, "write_kvmstate_to_list failed\n");
480 abort();
481 }
Alex Bennée38df27c2014-12-11 12:07:53 +0000482}
483
Alex Bennée1a1753f2015-04-01 17:57:30 +0100484/*
485 * Update KVM's MP_STATE based on what QEMU thinks it is
486 */
487int kvm_arm_sync_mpstate_to_kvm(ARMCPU *cpu)
488{
489 if (cap_has_mp_state) {
490 struct kvm_mp_state mp_state = {
491 .mp_state =
492 cpu->powered_off ? KVM_MP_STATE_STOPPED : KVM_MP_STATE_RUNNABLE
493 };
494 int ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state);
495 if (ret) {
496 fprintf(stderr, "%s: failed to set MP_STATE %d/%s\n",
497 __func__, ret, strerror(-ret));
498 return -1;
499 }
500 }
501
502 return 0;
503}
504
505/*
506 * Sync the KVM MP_STATE into QEMU
507 */
508int kvm_arm_sync_mpstate_to_qemu(ARMCPU *cpu)
509{
510 if (cap_has_mp_state) {
511 struct kvm_mp_state mp_state;
512 int ret = kvm_vcpu_ioctl(CPU(cpu), KVM_GET_MP_STATE, &mp_state);
513 if (ret) {
514 fprintf(stderr, "%s: failed to get MP_STATE %d/%s\n",
515 __func__, ret, strerror(-ret));
516 abort();
517 }
518 cpu->powered_off = (mp_state.mp_state == KVM_MP_STATE_STOPPED);
519 }
520
521 return 0;
522}
523
Christoffer Dall494b00c2013-03-05 00:34:41 +0000524void kvm_arch_pre_run(CPUState *cs, struct kvm_run *run)
525{
526}
527
Paolo Bonzini4c663752015-04-08 13:30:58 +0200528MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
Christoffer Dall494b00c2013-03-05 00:34:41 +0000529{
Paolo Bonzini4c663752015-04-08 13:30:58 +0200530 return MEMTXATTRS_UNSPECIFIED;
Christoffer Dall494b00c2013-03-05 00:34:41 +0000531}
532
Alex Bennée2ecb2022015-12-17 13:37:15 +0000533
Christoffer Dall494b00c2013-03-05 00:34:41 +0000534int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
535{
Alex Bennée2ecb2022015-12-17 13:37:15 +0000536 int ret = 0;
537
538 switch (run->exit_reason) {
539 case KVM_EXIT_DEBUG:
540 if (kvm_arm_handle_debug(cs, &run->debug.arch)) {
541 ret = EXCP_DEBUG;
542 } /* otherwise return to guest */
543 break;
544 default:
545 qemu_log_mask(LOG_UNIMP, "%s: un-handled exit reason %d\n",
546 __func__, run->exit_reason);
547 break;
548 }
549 return ret;
Christoffer Dall494b00c2013-03-05 00:34:41 +0000550}
551
Christoffer Dall494b00c2013-03-05 00:34:41 +0000552bool kvm_arch_stop_on_emulation_error(CPUState *cs)
553{
554 return true;
555}
556
557int kvm_arch_process_async_events(CPUState *cs)
558{
559 return 0;
560}
561
562int kvm_arch_on_sigbus_vcpu(CPUState *cs, int code, void *addr)
563{
564 return 1;
565}
566
567int kvm_arch_on_sigbus(int code, void *addr)
568{
569 return 1;
570}
571
Alex Bennée2ecb2022015-12-17 13:37:15 +0000572/* The #ifdef protections are until 32bit headers are imported and can
573 * be removed once both 32 and 64 bit reach feature parity.
574 */
Christoffer Dall494b00c2013-03-05 00:34:41 +0000575void kvm_arch_update_guest_debug(CPUState *cs, struct kvm_guest_debug *dbg)
576{
Alex Bennée2ecb2022015-12-17 13:37:15 +0000577#ifdef KVM_GUESTDBG_USE_SW_BP
578 if (kvm_sw_breakpoints_active(cs)) {
579 dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP;
580 }
581#endif
Alex Bennéee4482ab2015-12-17 13:37:15 +0000582#ifdef KVM_GUESTDBG_USE_HW
583 if (kvm_arm_hw_debug_active(cs)) {
584 dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW;
585 kvm_arm_copy_hw_debug_data(&dbg->arch);
586 }
587#endif
Christoffer Dall494b00c2013-03-05 00:34:41 +0000588}
Alexey Kardashevskiyb3a1c622013-06-12 17:26:52 +1000589
590void kvm_arch_init_irq_routing(KVMState *s)
591{
592}
Christoffer Dall1da41cc2014-02-26 17:20:00 +0000593
Paolo Bonzini15eafc22015-12-17 17:16:08 +0100594int kvm_arch_irqchip_create(MachineState *ms, KVMState *s)
Christoffer Dall1da41cc2014-02-26 17:20:00 +0000595{
Paolo Bonzini15eafc22015-12-17 17:16:08 +0100596 if (machine_kernel_irqchip_split(ms)) {
597 perror("-machine kernel_irqchip=split is not supported on ARM.");
598 exit(1);
599 }
600
Christoffer Dall1da41cc2014-02-26 17:20:00 +0000601 /* If we can create the VGIC using the newer device control API, we
602 * let the device do this when it initializes itself, otherwise we
603 * fall back to the old API */
Pavel Fedin34e85cd2015-09-24 01:29:37 +0100604 return kvm_check_extension(s, KVM_CAP_DEVICE_CTRL);
605}
Christoffer Dall1da41cc2014-02-26 17:20:00 +0000606
Pavel Fedin34e85cd2015-09-24 01:29:37 +0100607int kvm_arm_vgic_probe(void)
608{
609 if (kvm_create_device(kvm_state,
610 KVM_DEV_TYPE_ARM_VGIC_V3, true) == 0) {
611 return 3;
612 } else if (kvm_create_device(kvm_state,
613 KVM_DEV_TYPE_ARM_VGIC_V2, true) == 0) {
614 return 2;
615 } else {
616 return 0;
Christoffer Dall1da41cc2014-02-26 17:20:00 +0000617 }
Christoffer Dall1da41cc2014-02-26 17:20:00 +0000618}
Frank Blaschka9e03a042015-01-09 09:04:40 +0100619
620int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
Pavel Fedindc9f06c2015-10-15 16:44:52 +0300621 uint64_t address, uint32_t data, PCIDevice *dev)
Frank Blaschka9e03a042015-01-09 09:04:40 +0100622{
623 return 0;
624}
Eric Auger1850b6b2015-06-02 14:56:23 +0100625
626int kvm_arch_msi_data_to_gsi(uint32_t data)
627{
628 return (data - 32) & 0xffff;
629}