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23
24#include "qemu/osdep.h"
25#include <sys/ioctl.h>
26#include <sys/mman.h>
27
28#include <linux/kvm.h>
29#include <asm/ptrace.h>
30
31#include "qemu-common.h"
32#include "qemu/error-report.h"
33#include "qemu/timer.h"
34#include "sysemu/sysemu.h"
35#include "sysemu/kvm.h"
36#include "hw/hw.h"
37#include "cpu.h"
38#include "sysemu/device_tree.h"
39#include "qapi/qmp/qjson.h"
40#include "exec/gdbstub.h"
41#include "exec/address-spaces.h"
42#include "trace.h"
43#include "qapi-event.h"
44#include "hw/s390x/s390-pci-inst.h"
45#include "hw/s390x/s390-pci-bus.h"
46#include "hw/s390x/ipl.h"
47#include "hw/s390x/ebcdic.h"
48#include "exec/memattrs.h"
49
50
51
52#ifdef DEBUG_KVM
53#define DPRINTF(fmt, ...) \
54 do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0)
55#else
56#define DPRINTF(fmt, ...) \
57 do { } while (0)
58#endif
59
60#define kvm_vm_check_mem_attr(s, attr) \
61 kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr)
62
63#define IPA0_DIAG 0x8300
64#define IPA0_SIGP 0xae00
65#define IPA0_B2 0xb200
66#define IPA0_B9 0xb900
67#define IPA0_EB 0xeb00
68#define IPA0_E3 0xe300
69
70#define PRIV_B2_SCLP_CALL 0x20
71#define PRIV_B2_CSCH 0x30
72#define PRIV_B2_HSCH 0x31
73#define PRIV_B2_MSCH 0x32
74#define PRIV_B2_SSCH 0x33
75#define PRIV_B2_STSCH 0x34
76#define PRIV_B2_TSCH 0x35
77#define PRIV_B2_TPI 0x36
78#define PRIV_B2_SAL 0x37
79#define PRIV_B2_RSCH 0x38
80#define PRIV_B2_STCRW 0x39
81#define PRIV_B2_STCPS 0x3a
82#define PRIV_B2_RCHP 0x3b
83#define PRIV_B2_SCHM 0x3c
84#define PRIV_B2_CHSC 0x5f
85#define PRIV_B2_SIGA 0x74
86#define PRIV_B2_XSCH 0x76
87
88#define PRIV_EB_SQBS 0x8a
89#define PRIV_EB_PCISTB 0xd0
90#define PRIV_EB_SIC 0xd1
91
92#define PRIV_B9_EQBS 0x9c
93#define PRIV_B9_CLP 0xa0
94#define PRIV_B9_PCISTG 0xd0
95#define PRIV_B9_PCILG 0xd2
96#define PRIV_B9_RPCIT 0xd3
97
98#define PRIV_E3_MPCIFC 0xd0
99#define PRIV_E3_STPCIFC 0xd4
100
101#define DIAG_TIMEREVENT 0x288
102#define DIAG_IPL 0x308
103#define DIAG_KVM_HYPERCALL 0x500
104#define DIAG_KVM_BREAKPOINT 0x501
105
106#define ICPT_INSTRUCTION 0x04
107#define ICPT_PROGRAM 0x08
108#define ICPT_EXT_INT 0x14
109#define ICPT_WAITPSW 0x1c
110#define ICPT_SOFT_INTERCEPT 0x24
111#define ICPT_CPU_STOP 0x28
112#define ICPT_IO 0x40
113
114#define NR_LOCAL_IRQS 32
115
116
117
118
119#define VCPU_IRQ_BUF_SIZE (sizeof(struct kvm_s390_irq) * \
120 (max_cpus + NR_LOCAL_IRQS))
121
122static CPUWatchpoint hw_watchpoint;
123
124
125
126
127static struct kvm_hw_breakpoint *hw_breakpoints;
128static int nb_hw_breakpoints;
129
130const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
131 KVM_CAP_LAST_INFO
132};
133
134static int cap_sync_regs;
135static int cap_async_pf;
136static int cap_mem_op;
137static int cap_s390_irq;
138
139static void *legacy_s390_alloc(size_t size, uint64_t *align);
140
141static int kvm_s390_query_mem_limit(KVMState *s, uint64_t *memory_limit)
142{
143 struct kvm_device_attr attr = {
144 .group = KVM_S390_VM_MEM_CTRL,
145 .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
146 .addr = (uint64_t) memory_limit,
147 };
148
149 return kvm_vm_ioctl(s, KVM_GET_DEVICE_ATTR, &attr);
150}
151
152int kvm_s390_set_mem_limit(KVMState *s, uint64_t new_limit, uint64_t *hw_limit)
153{
154 int rc;
155
156 struct kvm_device_attr attr = {
157 .group = KVM_S390_VM_MEM_CTRL,
158 .attr = KVM_S390_VM_MEM_LIMIT_SIZE,
159 .addr = (uint64_t) &new_limit,
160 };
161
162 if (!kvm_vm_check_mem_attr(s, KVM_S390_VM_MEM_LIMIT_SIZE)) {
163 return 0;
164 }
165
166 rc = kvm_s390_query_mem_limit(s, hw_limit);
167 if (rc) {
168 return rc;
169 } else if (*hw_limit < new_limit) {
170 return -E2BIG;
171 }
172
173 return kvm_vm_ioctl(s, KVM_SET_DEVICE_ATTR, &attr);
174}
175
176void kvm_s390_cmma_reset(void)
177{
178 int rc;
179 struct kvm_device_attr attr = {
180 .group = KVM_S390_VM_MEM_CTRL,
181 .attr = KVM_S390_VM_MEM_CLR_CMMA,
182 };
183
184 rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
185 trace_kvm_clear_cmma(rc);
186}
187
188static void kvm_s390_enable_cmma(KVMState *s)
189{
190 int rc;
191 struct kvm_device_attr attr = {
192 .group = KVM_S390_VM_MEM_CTRL,
193 .attr = KVM_S390_VM_MEM_ENABLE_CMMA,
194 };
195
196 if (!kvm_vm_check_mem_attr(s, KVM_S390_VM_MEM_ENABLE_CMMA) ||
197 !kvm_vm_check_mem_attr(s, KVM_S390_VM_MEM_CLR_CMMA)) {
198 return;
199 }
200
201 rc = kvm_vm_ioctl(s, KVM_SET_DEVICE_ATTR, &attr);
202 trace_kvm_enable_cmma(rc);
203}
204
205static void kvm_s390_set_attr(uint64_t attr)
206{
207 struct kvm_device_attr attribute = {
208 .group = KVM_S390_VM_CRYPTO,
209 .attr = attr,
210 };
211
212 int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute);
213
214 if (ret) {
215 error_report("Failed to set crypto device attribute %lu: %s",
216 attr, strerror(-ret));
217 }
218}
219
220static void kvm_s390_init_aes_kw(void)
221{
222 uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_AES_KW;
223
224 if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap",
225 NULL)) {
226 attr = KVM_S390_VM_CRYPTO_ENABLE_AES_KW;
227 }
228
229 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
230 kvm_s390_set_attr(attr);
231 }
232}
233
234static void kvm_s390_init_dea_kw(void)
235{
236 uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_DEA_KW;
237
238 if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap",
239 NULL)) {
240 attr = KVM_S390_VM_CRYPTO_ENABLE_DEA_KW;
241 }
242
243 if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) {
244 kvm_s390_set_attr(attr);
245 }
246}
247
248void kvm_s390_crypto_reset(void)
249{
250 kvm_s390_init_aes_kw();
251 kvm_s390_init_dea_kw();
252}
253
254int kvm_arch_init(MachineState *ms, KVMState *s)
255{
256 cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS);
257 cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF);
258 cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP);
259 cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ);
260
261 if (!mem_path) {
262 kvm_s390_enable_cmma(s);
263 }
264
265 if (!kvm_check_extension(s, KVM_CAP_S390_GMAP)
266 || !kvm_check_extension(s, KVM_CAP_S390_COW)) {
267 phys_mem_set_alloc(legacy_s390_alloc);
268 }
269
270 kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0);
271 kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0);
272 kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0);
273
274 return 0;
275}
276
277unsigned long kvm_arch_vcpu_id(CPUState *cpu)
278{
279 return cpu->cpu_index;
280}
281
282int kvm_arch_init_vcpu(CPUState *cs)
283{
284 S390CPU *cpu = S390_CPU(cs);
285 kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
286 cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE);
287 return 0;
288}
289
290void kvm_s390_reset_vcpu(S390CPU *cpu)
291{
292 CPUState *cs = CPU(cpu);
293
294
295
296
297
298
299 if (kvm_vcpu_ioctl(cs, KVM_S390_INITIAL_RESET, NULL)) {
300 error_report("Initial CPU reset failed on CPU %i", cs->cpu_index);
301 }
302}
303
304static int can_sync_regs(CPUState *cs, int regs)
305{
306 return cap_sync_regs && (cs->kvm_run->kvm_valid_regs & regs) == regs;
307}
308
309int kvm_arch_put_registers(CPUState *cs, int level)
310{
311 S390CPU *cpu = S390_CPU(cs);
312 CPUS390XState *env = &cpu->env;
313 struct kvm_sregs sregs;
314 struct kvm_regs regs;
315 struct kvm_fpu fpu = {};
316 int r;
317 int i;
318
319
320 cs->kvm_run->psw_addr = env->psw.addr;
321 cs->kvm_run->psw_mask = env->psw.mask;
322
323 if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
324 for (i = 0; i < 16; i++) {
325 cs->kvm_run->s.regs.gprs[i] = env->regs[i];
326 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS;
327 }
328 } else {
329 for (i = 0; i < 16; i++) {
330 regs.gprs[i] = env->regs[i];
331 }
332 r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s);
333 if (r < 0) {
334 return r;
335 }
336 }
337
338 if (can_sync_regs(cs, KVM_SYNC_VRS)) {
339 for (i = 0; i < 32; i++) {
340 cs->kvm_run->s.regs.vrs[i][0] = env->vregs[i][0].ll;
341 cs->kvm_run->s.regs.vrs[i][1] = env->vregs[i][1].ll;
342 }
343 cs->kvm_run->s.regs.fpc = env->fpc;
344 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_VRS;
345 } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
346 for (i = 0; i < 16; i++) {
347 cs->kvm_run->s.regs.fprs[i] = get_freg(env, i)->ll;
348 }
349 cs->kvm_run->s.regs.fpc = env->fpc;
350 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_FPRS;
351 } else {
352
353 for (i = 0; i < 16; i++) {
354 fpu.fprs[i] = get_freg(env, i)->ll;
355 }
356 fpu.fpc = env->fpc;
357
358 r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu);
359 if (r < 0) {
360 return r;
361 }
362 }
363
364
365 if (level == KVM_PUT_RUNTIME_STATE) {
366 return 0;
367 }
368
369 if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
370 cs->kvm_run->s.regs.cputm = env->cputm;
371 cs->kvm_run->s.regs.ckc = env->ckc;
372 cs->kvm_run->s.regs.todpr = env->todpr;
373 cs->kvm_run->s.regs.gbea = env->gbea;
374 cs->kvm_run->s.regs.pp = env->pp;
375 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ARCH0;
376 } else {
377
378
379
380
381
382 kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
383 kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
384 kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
385 kvm_set_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
386 kvm_set_one_reg(cs, KVM_REG_S390_PP, &env->pp);
387 }
388
389
390 if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
391 cs->kvm_run->s.regs.pft = env->pfault_token;
392 cs->kvm_run->s.regs.pfs = env->pfault_select;
393 cs->kvm_run->s.regs.pfc = env->pfault_compare;
394 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PFAULT;
395 } else if (cap_async_pf) {
396 r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
397 if (r < 0) {
398 return r;
399 }
400 r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
401 if (r < 0) {
402 return r;
403 }
404 r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
405 if (r < 0) {
406 return r;
407 }
408 }
409
410
411 if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
412 for (i = 0; i < 16; i++) {
413 cs->kvm_run->s.regs.acrs[i] = env->aregs[i];
414 cs->kvm_run->s.regs.crs[i] = env->cregs[i];
415 }
416 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS;
417 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS;
418 } else {
419 for (i = 0; i < 16; i++) {
420 sregs.acrs[i] = env->aregs[i];
421 sregs.crs[i] = env->cregs[i];
422 }
423 r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs);
424 if (r < 0) {
425 return r;
426 }
427 }
428
429
430 if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
431 cs->kvm_run->s.regs.prefix = env->psa;
432 cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX;
433 } else {
434
435 }
436 return 0;
437}
438
439int kvm_arch_get_registers(CPUState *cs)
440{
441 S390CPU *cpu = S390_CPU(cs);
442 CPUS390XState *env = &cpu->env;
443 struct kvm_sregs sregs;
444 struct kvm_regs regs;
445 struct kvm_fpu fpu;
446 int i, r;
447
448
449 env->psw.addr = cs->kvm_run->psw_addr;
450 env->psw.mask = cs->kvm_run->psw_mask;
451
452
453 if (can_sync_regs(cs, KVM_SYNC_GPRS)) {
454 for (i = 0; i < 16; i++) {
455 env->regs[i] = cs->kvm_run->s.regs.gprs[i];
456 }
457 } else {
458 r = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s);
459 if (r < 0) {
460 return r;
461 }
462 for (i = 0; i < 16; i++) {
463 env->regs[i] = regs.gprs[i];
464 }
465 }
466
467
468 if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) {
469 for (i = 0; i < 16; i++) {
470 env->aregs[i] = cs->kvm_run->s.regs.acrs[i];
471 env->cregs[i] = cs->kvm_run->s.regs.crs[i];
472 }
473 } else {
474 r = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs);
475 if (r < 0) {
476 return r;
477 }
478 for (i = 0; i < 16; i++) {
479 env->aregs[i] = sregs.acrs[i];
480 env->cregs[i] = sregs.crs[i];
481 }
482 }
483
484
485 if (can_sync_regs(cs, KVM_SYNC_VRS)) {
486 for (i = 0; i < 32; i++) {
487 env->vregs[i][0].ll = cs->kvm_run->s.regs.vrs[i][0];
488 env->vregs[i][1].ll = cs->kvm_run->s.regs.vrs[i][1];
489 }
490 env->fpc = cs->kvm_run->s.regs.fpc;
491 } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) {
492 for (i = 0; i < 16; i++) {
493 get_freg(env, i)->ll = cs->kvm_run->s.regs.fprs[i];
494 }
495 env->fpc = cs->kvm_run->s.regs.fpc;
496 } else {
497 r = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu);
498 if (r < 0) {
499 return r;
500 }
501 for (i = 0; i < 16; i++) {
502 get_freg(env, i)->ll = fpu.fprs[i];
503 }
504 env->fpc = fpu.fpc;
505 }
506
507
508 if (can_sync_regs(cs, KVM_SYNC_PREFIX)) {
509 env->psa = cs->kvm_run->s.regs.prefix;
510 }
511
512 if (can_sync_regs(cs, KVM_SYNC_ARCH0)) {
513 env->cputm = cs->kvm_run->s.regs.cputm;
514 env->ckc = cs->kvm_run->s.regs.ckc;
515 env->todpr = cs->kvm_run->s.regs.todpr;
516 env->gbea = cs->kvm_run->s.regs.gbea;
517 env->pp = cs->kvm_run->s.regs.pp;
518 } else {
519
520
521
522
523
524 kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm);
525 kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc);
526 kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr);
527 kvm_get_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea);
528 kvm_get_one_reg(cs, KVM_REG_S390_PP, &env->pp);
529 }
530
531
532 if (can_sync_regs(cs, KVM_SYNC_PFAULT)) {
533 env->pfault_token = cs->kvm_run->s.regs.pft;
534 env->pfault_select = cs->kvm_run->s.regs.pfs;
535 env->pfault_compare = cs->kvm_run->s.regs.pfc;
536 } else if (cap_async_pf) {
537 r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token);
538 if (r < 0) {
539 return r;
540 }
541 r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare);
542 if (r < 0) {
543 return r;
544 }
545 r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select);
546 if (r < 0) {
547 return r;
548 }
549 }
550
551 return 0;
552}
553
554int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low)
555{
556 int r;
557 struct kvm_device_attr attr = {
558 .group = KVM_S390_VM_TOD,
559 .attr = KVM_S390_VM_TOD_LOW,
560 .addr = (uint64_t)tod_low,
561 };
562
563 r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
564 if (r) {
565 return r;
566 }
567
568 attr.attr = KVM_S390_VM_TOD_HIGH;
569 attr.addr = (uint64_t)tod_high;
570 return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr);
571}
572
573int kvm_s390_set_clock(uint8_t *tod_high, uint64_t *tod_low)
574{
575 int r;
576
577 struct kvm_device_attr attr = {
578 .group = KVM_S390_VM_TOD,
579 .attr = KVM_S390_VM_TOD_LOW,
580 .addr = (uint64_t)tod_low,
581 };
582
583 r = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
584 if (r) {
585 return r;
586 }
587
588 attr.attr = KVM_S390_VM_TOD_HIGH;
589 attr.addr = (uint64_t)tod_high;
590 return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr);
591}
592
593
594
595
596
597
598
599
600
601
602
603
604
605int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf,
606 int len, bool is_write)
607{
608 struct kvm_s390_mem_op mem_op = {
609 .gaddr = addr,
610 .flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION,
611 .size = len,
612 .op = is_write ? KVM_S390_MEMOP_LOGICAL_WRITE
613 : KVM_S390_MEMOP_LOGICAL_READ,
614 .buf = (uint64_t)hostbuf,
615 .ar = ar,
616 };
617 int ret;
618
619 if (!cap_mem_op) {
620 return -ENOSYS;
621 }
622 if (!hostbuf) {
623 mem_op.flags |= KVM_S390_MEMOP_F_CHECK_ONLY;
624 }
625
626 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op);
627 if (ret < 0) {
628 error_printf("KVM_S390_MEM_OP failed: %s\n", strerror(-ret));
629 }
630 return ret;
631}
632
633
634
635
636
637
638
639
640
641
642
643static void *legacy_s390_alloc(size_t size, uint64_t *align)
644{
645 void *mem;
646
647 mem = mmap((void *) 0x800000000ULL, size,
648 PROT_EXEC|PROT_READ|PROT_WRITE,
649 MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0);
650 return mem == MAP_FAILED ? NULL : mem;
651}
652
653
654static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01};
655
656int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
657{
658
659 if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
660 sizeof(diag_501), 0) ||
661 cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)diag_501,
662 sizeof(diag_501), 1)) {
663 return -EINVAL;
664 }
665 return 0;
666}
667
668int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp)
669{
670 uint8_t t[sizeof(diag_501)];
671
672 if (cpu_memory_rw_debug(cs, bp->pc, t, sizeof(diag_501), 0)) {
673 return -EINVAL;
674 } else if (memcmp(t, diag_501, sizeof(diag_501))) {
675 return -EINVAL;
676 } else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn,
677 sizeof(diag_501), 1)) {
678 return -EINVAL;
679 }
680
681 return 0;
682}
683
684static struct kvm_hw_breakpoint *find_hw_breakpoint(target_ulong addr,
685 int len, int type)
686{
687 int n;
688
689 for (n = 0; n < nb_hw_breakpoints; n++) {
690 if (hw_breakpoints[n].addr == addr && hw_breakpoints[n].type == type &&
691 (hw_breakpoints[n].len == len || len == -1)) {
692 return &hw_breakpoints[n];
693 }
694 }
695
696 return NULL;
697}
698
699static int insert_hw_breakpoint(target_ulong addr, int len, int type)
700{
701 int size;
702
703 if (find_hw_breakpoint(addr, len, type)) {
704 return -EEXIST;
705 }
706
707 size = (nb_hw_breakpoints + 1) * sizeof(struct kvm_hw_breakpoint);
708
709 if (!hw_breakpoints) {
710 nb_hw_breakpoints = 0;
711 hw_breakpoints = (struct kvm_hw_breakpoint *)g_try_malloc(size);
712 } else {
713 hw_breakpoints =
714 (struct kvm_hw_breakpoint *)g_try_realloc(hw_breakpoints, size);
715 }
716
717 if (!hw_breakpoints) {
718 nb_hw_breakpoints = 0;
719 return -ENOMEM;
720 }
721
722 hw_breakpoints[nb_hw_breakpoints].addr = addr;
723 hw_breakpoints[nb_hw_breakpoints].len = len;
724 hw_breakpoints[nb_hw_breakpoints].type = type;
725
726 nb_hw_breakpoints++;
727
728 return 0;
729}
730
731int kvm_arch_insert_hw_breakpoint(target_ulong addr,
732 target_ulong len, int type)
733{
734 switch (type) {
735 case GDB_BREAKPOINT_HW:
736 type = KVM_HW_BP;
737 break;
738 case GDB_WATCHPOINT_WRITE:
739 if (len < 1) {
740 return -EINVAL;
741 }
742 type = KVM_HW_WP_WRITE;
743 break;
744 default:
745 return -ENOSYS;
746 }
747 return insert_hw_breakpoint(addr, len, type);
748}
749
750int kvm_arch_remove_hw_breakpoint(target_ulong addr,
751 target_ulong len, int type)
752{
753 int size;
754 struct kvm_hw_breakpoint *bp = find_hw_breakpoint(addr, len, type);
755
756 if (bp == NULL) {
757 return -ENOENT;
758 }
759
760 nb_hw_breakpoints--;
761 if (nb_hw_breakpoints > 0) {
762
763
764
765
766 if (bp != &hw_breakpoints[nb_hw_breakpoints]) {
767 *bp = hw_breakpoints[nb_hw_breakpoints];
768 }
769 size = nb_hw_breakpoints * sizeof(struct kvm_hw_breakpoint);
770 hw_breakpoints =
771 (struct kvm_hw_breakpoint *)g_realloc(hw_breakpoints, size);
772 } else {
773 g_free(hw_breakpoints);
774 hw_breakpoints = NULL;
775 }
776
777 return 0;
778}
779
780void kvm_arch_remove_all_hw_breakpoints(void)
781{
782 nb_hw_breakpoints = 0;
783 g_free(hw_breakpoints);
784 hw_breakpoints = NULL;
785}
786
787void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg)
788{
789 int i;
790
791 if (nb_hw_breakpoints > 0) {
792 dbg->arch.nr_hw_bp = nb_hw_breakpoints;
793 dbg->arch.hw_bp = hw_breakpoints;
794
795 for (i = 0; i < nb_hw_breakpoints; ++i) {
796 hw_breakpoints[i].phys_addr = s390_cpu_get_phys_addr_debug(cpu,
797 hw_breakpoints[i].addr);
798 }
799 dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP;
800 } else {
801 dbg->arch.nr_hw_bp = 0;
802 dbg->arch.hw_bp = NULL;
803 }
804}
805
806void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
807{
808}
809
810MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
811{
812 return MEMTXATTRS_UNSPECIFIED;
813}
814
815int kvm_arch_process_async_events(CPUState *cs)
816{
817 return cs->halted;
818}
819
820static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq *irq,
821 struct kvm_s390_interrupt *interrupt)
822{
823 int r = 0;
824
825 interrupt->type = irq->type;
826 switch (irq->type) {
827 case KVM_S390_INT_VIRTIO:
828 interrupt->parm = irq->u.ext.ext_params;
829
830 case KVM_S390_INT_PFAULT_INIT:
831 case KVM_S390_INT_PFAULT_DONE:
832 interrupt->parm64 = irq->u.ext.ext_params2;
833 break;
834 case KVM_S390_PROGRAM_INT:
835 interrupt->parm = irq->u.pgm.code;
836 break;
837 case KVM_S390_SIGP_SET_PREFIX:
838 interrupt->parm = irq->u.prefix.address;
839 break;
840 case KVM_S390_INT_SERVICE:
841 interrupt->parm = irq->u.ext.ext_params;
842 break;
843 case KVM_S390_MCHK:
844 interrupt->parm = irq->u.mchk.cr14;
845 interrupt->parm64 = irq->u.mchk.mcic;
846 break;
847 case KVM_S390_INT_EXTERNAL_CALL:
848 interrupt->parm = irq->u.extcall.code;
849 break;
850 case KVM_S390_INT_EMERGENCY:
851 interrupt->parm = irq->u.emerg.code;
852 break;
853 case KVM_S390_SIGP_STOP:
854 case KVM_S390_RESTART:
855 break;
856 case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
857 interrupt->parm = irq->u.io.subchannel_id << 16;
858 interrupt->parm |= irq->u.io.subchannel_nr;
859 interrupt->parm64 = (uint64_t)irq->u.io.io_int_parm << 32;
860 interrupt->parm64 |= irq->u.io.io_int_word;
861 break;
862 default:
863 r = -EINVAL;
864 break;
865 }
866 return r;
867}
868
869static void inject_vcpu_irq_legacy(CPUState *cs, struct kvm_s390_irq *irq)
870{
871 struct kvm_s390_interrupt kvmint = {};
872 int r;
873
874 r = s390_kvm_irq_to_interrupt(irq, &kvmint);
875 if (r < 0) {
876 fprintf(stderr, "%s called with bogus interrupt\n", __func__);
877 exit(1);
878 }
879
880 r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint);
881 if (r < 0) {
882 fprintf(stderr, "KVM failed to inject interrupt\n");
883 exit(1);
884 }
885}
886
887void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq)
888{
889 CPUState *cs = CPU(cpu);
890 int r;
891
892 if (cap_s390_irq) {
893 r = kvm_vcpu_ioctl(cs, KVM_S390_IRQ, irq);
894 if (!r) {
895 return;
896 }
897 error_report("KVM failed to inject interrupt %llx", irq->type);
898 exit(1);
899 }
900
901 inject_vcpu_irq_legacy(cs, irq);
902}
903
904static void __kvm_s390_floating_interrupt(struct kvm_s390_irq *irq)
905{
906 struct kvm_s390_interrupt kvmint = {};
907 int r;
908
909 r = s390_kvm_irq_to_interrupt(irq, &kvmint);
910 if (r < 0) {
911 fprintf(stderr, "%s called with bogus interrupt\n", __func__);
912 exit(1);
913 }
914
915 r = kvm_vm_ioctl(kvm_state, KVM_S390_INTERRUPT, &kvmint);
916 if (r < 0) {
917 fprintf(stderr, "KVM failed to inject interrupt\n");
918 exit(1);
919 }
920}
921
922void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq)
923{
924 static bool use_flic = true;
925 int r;
926
927 if (use_flic) {
928 r = kvm_s390_inject_flic(irq);
929 if (r == -ENOSYS) {
930 use_flic = false;
931 }
932 if (!r) {
933 return;
934 }
935 }
936 __kvm_s390_floating_interrupt(irq);
937}
938
939void kvm_s390_service_interrupt(uint32_t parm)
940{
941 struct kvm_s390_irq irq = {
942 .type = KVM_S390_INT_SERVICE,
943 .u.ext.ext_params = parm,
944 };
945
946 kvm_s390_floating_interrupt(&irq);
947}
948
949static void enter_pgmcheck(S390CPU *cpu, uint16_t code)
950{
951 struct kvm_s390_irq irq = {
952 .type = KVM_S390_PROGRAM_INT,
953 .u.pgm.code = code,
954 };
955
956 kvm_s390_vcpu_interrupt(cpu, &irq);
957}
958
959void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code)
960{
961 struct kvm_s390_irq irq = {
962 .type = KVM_S390_PROGRAM_INT,
963 .u.pgm.code = code,
964 .u.pgm.trans_exc_code = te_code,
965 .u.pgm.exc_access_id = te_code & 3,
966 };
967
968 kvm_s390_vcpu_interrupt(cpu, &irq);
969}
970
971static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run,
972 uint16_t ipbh0)
973{
974 CPUS390XState *env = &cpu->env;
975 uint64_t sccb;
976 uint32_t code;
977 int r = 0;
978
979 cpu_synchronize_state(CPU(cpu));
980 sccb = env->regs[ipbh0 & 0xf];
981 code = env->regs[(ipbh0 & 0xf0) >> 4];
982
983 r = sclp_service_call(env, sccb, code);
984 if (r < 0) {
985 enter_pgmcheck(cpu, -r);
986 } else {
987 setcc(cpu, r);
988 }
989
990 return 0;
991}
992
993static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
994{
995 CPUS390XState *env = &cpu->env;
996 int rc = 0;
997 uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16;
998
999 cpu_synchronize_state(CPU(cpu));
1000
1001 switch (ipa1) {
1002 case PRIV_B2_XSCH:
1003 ioinst_handle_xsch(cpu, env->regs[1]);
1004 break;
1005 case PRIV_B2_CSCH:
1006 ioinst_handle_csch(cpu, env->regs[1]);
1007 break;
1008 case PRIV_B2_HSCH:
1009 ioinst_handle_hsch(cpu, env->regs[1]);
1010 break;
1011 case PRIV_B2_MSCH:
1012 ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb);
1013 break;
1014 case PRIV_B2_SSCH:
1015 ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb);
1016 break;
1017 case PRIV_B2_STCRW:
1018 ioinst_handle_stcrw(cpu, run->s390_sieic.ipb);
1019 break;
1020 case PRIV_B2_STSCH:
1021 ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb);
1022 break;
1023 case PRIV_B2_TSCH:
1024
1025 fprintf(stderr, "Spurious tsch intercept\n");
1026 break;
1027 case PRIV_B2_CHSC:
1028 ioinst_handle_chsc(cpu, run->s390_sieic.ipb);
1029 break;
1030 case PRIV_B2_TPI:
1031
1032 fprintf(stderr, "Spurious tpi intercept\n");
1033 break;
1034 case PRIV_B2_SCHM:
1035 ioinst_handle_schm(cpu, env->regs[1], env->regs[2],
1036 run->s390_sieic.ipb);
1037 break;
1038 case PRIV_B2_RSCH:
1039 ioinst_handle_rsch(cpu, env->regs[1]);
1040 break;
1041 case PRIV_B2_RCHP:
1042 ioinst_handle_rchp(cpu, env->regs[1]);
1043 break;
1044 case PRIV_B2_STCPS:
1045
1046 break;
1047 case PRIV_B2_SAL:
1048 ioinst_handle_sal(cpu, env->regs[1]);
1049 break;
1050 case PRIV_B2_SIGA:
1051
1052 setcc(cpu, 3);
1053 break;
1054 case PRIV_B2_SCLP_CALL:
1055 rc = kvm_sclp_service_call(cpu, run, ipbh0);
1056 break;
1057 default:
1058 rc = -1;
1059 DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1);
1060 break;
1061 }
1062
1063 return rc;
1064}
1065
1066static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run,
1067 uint8_t *ar)
1068{
1069 CPUS390XState *env = &cpu->env;
1070 uint32_t x2 = (run->s390_sieic.ipa & 0x000f);
1071 uint32_t base2 = run->s390_sieic.ipb >> 28;
1072 uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
1073 ((run->s390_sieic.ipb & 0xff00) << 4);
1074
1075 if (disp2 & 0x80000) {
1076 disp2 += 0xfff00000;
1077 }
1078 if (ar) {
1079 *ar = base2;
1080 }
1081
1082 return (base2 ? env->regs[base2] : 0) +
1083 (x2 ? env->regs[x2] : 0) + (long)(int)disp2;
1084}
1085
1086static uint64_t get_base_disp_rsy(S390CPU *cpu, struct kvm_run *run,
1087 uint8_t *ar)
1088{
1089 CPUS390XState *env = &cpu->env;
1090 uint32_t base2 = run->s390_sieic.ipb >> 28;
1091 uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) +
1092 ((run->s390_sieic.ipb & 0xff00) << 4);
1093
1094 if (disp2 & 0x80000) {
1095 disp2 += 0xfff00000;
1096 }
1097 if (ar) {
1098 *ar = base2;
1099 }
1100
1101 return (base2 ? env->regs[base2] : 0) + (long)(int)disp2;
1102}
1103
1104static int kvm_clp_service_call(S390CPU *cpu, struct kvm_run *run)
1105{
1106 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1107
1108 return clp_service_call(cpu, r2);
1109}
1110
1111static int kvm_pcilg_service_call(S390CPU *cpu, struct kvm_run *run)
1112{
1113 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1114 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1115
1116 return pcilg_service_call(cpu, r1, r2);
1117}
1118
1119static int kvm_pcistg_service_call(S390CPU *cpu, struct kvm_run *run)
1120{
1121 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1122 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1123
1124 return pcistg_service_call(cpu, r1, r2);
1125}
1126
1127static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1128{
1129 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1130 uint64_t fiba;
1131 uint8_t ar;
1132
1133 cpu_synchronize_state(CPU(cpu));
1134 fiba = get_base_disp_rxy(cpu, run, &ar);
1135
1136 return stpcifc_service_call(cpu, r1, fiba, ar);
1137}
1138
1139static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run)
1140{
1141
1142 return 0;
1143}
1144
1145static int kvm_rpcit_service_call(S390CPU *cpu, struct kvm_run *run)
1146{
1147 uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20;
1148 uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16;
1149
1150 return rpcit_service_call(cpu, r1, r2);
1151}
1152
1153static int kvm_pcistb_service_call(S390CPU *cpu, struct kvm_run *run)
1154{
1155 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1156 uint8_t r3 = run->s390_sieic.ipa & 0x000f;
1157 uint64_t gaddr;
1158 uint8_t ar;
1159
1160 cpu_synchronize_state(CPU(cpu));
1161 gaddr = get_base_disp_rsy(cpu, run, &ar);
1162
1163 return pcistb_service_call(cpu, r1, r3, gaddr, ar);
1164}
1165
1166static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run)
1167{
1168 uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1169 uint64_t fiba;
1170 uint8_t ar;
1171
1172 cpu_synchronize_state(CPU(cpu));
1173 fiba = get_base_disp_rxy(cpu, run, &ar);
1174
1175 return mpcifc_service_call(cpu, r1, fiba, ar);
1176}
1177
1178static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1179{
1180 int r = 0;
1181
1182 switch (ipa1) {
1183 case PRIV_B9_CLP:
1184 r = kvm_clp_service_call(cpu, run);
1185 break;
1186 case PRIV_B9_PCISTG:
1187 r = kvm_pcistg_service_call(cpu, run);
1188 break;
1189 case PRIV_B9_PCILG:
1190 r = kvm_pcilg_service_call(cpu, run);
1191 break;
1192 case PRIV_B9_RPCIT:
1193 r = kvm_rpcit_service_call(cpu, run);
1194 break;
1195 case PRIV_B9_EQBS:
1196
1197 r = -1;
1198 break;
1199 default:
1200 r = -1;
1201 DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1);
1202 break;
1203 }
1204
1205 return r;
1206}
1207
1208static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1209{
1210 int r = 0;
1211
1212 switch (ipbl) {
1213 case PRIV_EB_PCISTB:
1214 r = kvm_pcistb_service_call(cpu, run);
1215 break;
1216 case PRIV_EB_SIC:
1217 r = kvm_sic_service_call(cpu, run);
1218 break;
1219 case PRIV_EB_SQBS:
1220
1221 r = -1;
1222 break;
1223 default:
1224 r = -1;
1225 DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl);
1226 break;
1227 }
1228
1229 return r;
1230}
1231
1232static int handle_e3(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl)
1233{
1234 int r = 0;
1235
1236 switch (ipbl) {
1237 case PRIV_E3_MPCIFC:
1238 r = kvm_mpcifc_service_call(cpu, run);
1239 break;
1240 case PRIV_E3_STPCIFC:
1241 r = kvm_stpcifc_service_call(cpu, run);
1242 break;
1243 default:
1244 r = -1;
1245 DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl);
1246 break;
1247 }
1248
1249 return r;
1250}
1251
1252static int handle_hypercall(S390CPU *cpu, struct kvm_run *run)
1253{
1254 CPUS390XState *env = &cpu->env;
1255 int ret;
1256
1257 cpu_synchronize_state(CPU(cpu));
1258 ret = s390_virtio_hypercall(env);
1259 if (ret == -EINVAL) {
1260 enter_pgmcheck(cpu, PGM_SPECIFICATION);
1261 return 0;
1262 }
1263
1264 return ret;
1265}
1266
1267static void kvm_handle_diag_288(S390CPU *cpu, struct kvm_run *run)
1268{
1269 uint64_t r1, r3;
1270 int rc;
1271
1272 cpu_synchronize_state(CPU(cpu));
1273 r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1274 r3 = run->s390_sieic.ipa & 0x000f;
1275 rc = handle_diag_288(&cpu->env, r1, r3);
1276 if (rc) {
1277 enter_pgmcheck(cpu, PGM_SPECIFICATION);
1278 }
1279}
1280
1281static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run)
1282{
1283 uint64_t r1, r3;
1284
1285 cpu_synchronize_state(CPU(cpu));
1286 r1 = (run->s390_sieic.ipa & 0x00f0) >> 4;
1287 r3 = run->s390_sieic.ipa & 0x000f;
1288 handle_diag_308(&cpu->env, r1, r3);
1289}
1290
1291static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run)
1292{
1293 CPUS390XState *env = &cpu->env;
1294 unsigned long pc;
1295
1296 cpu_synchronize_state(CPU(cpu));
1297
1298 pc = env->psw.addr - 4;
1299 if (kvm_find_sw_breakpoint(CPU(cpu), pc)) {
1300 env->psw.addr = pc;
1301 return EXCP_DEBUG;
1302 }
1303
1304 return -ENOENT;
1305}
1306
1307#define DIAG_KVM_CODE_MASK 0x000000000000ffff
1308
1309static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
1310{
1311 int r = 0;
1312 uint16_t func_code;
1313
1314
1315
1316
1317
1318 func_code = decode_basedisp_rs(&cpu->env, ipb, NULL) & DIAG_KVM_CODE_MASK;
1319 switch (func_code) {
1320 case DIAG_TIMEREVENT:
1321 kvm_handle_diag_288(cpu, run);
1322 break;
1323 case DIAG_IPL:
1324 kvm_handle_diag_308(cpu, run);
1325 break;
1326 case DIAG_KVM_HYPERCALL:
1327 r = handle_hypercall(cpu, run);
1328 break;
1329 case DIAG_KVM_BREAKPOINT:
1330 r = handle_sw_breakpoint(cpu, run);
1331 break;
1332 default:
1333 DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
1334 enter_pgmcheck(cpu, PGM_SPECIFICATION);
1335 break;
1336 }
1337
1338 return r;
1339}
1340
1341typedef struct SigpInfo {
1342 S390CPU *cpu;
1343 uint64_t param;
1344 int cc;
1345 uint64_t *status_reg;
1346} SigpInfo;
1347
1348static void set_sigp_status(SigpInfo *si, uint64_t status)
1349{
1350 *si->status_reg &= 0xffffffff00000000ULL;
1351 *si->status_reg |= status;
1352 si->cc = SIGP_CC_STATUS_STORED;
1353}
1354
1355static void sigp_start(void *arg)
1356{
1357 SigpInfo *si = arg;
1358
1359 if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
1360 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1361 return;
1362 }
1363
1364 s390_cpu_set_state(CPU_STATE_OPERATING, si->cpu);
1365 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1366}
1367
1368static void sigp_stop(void *arg)
1369{
1370 SigpInfo *si = arg;
1371 struct kvm_s390_irq irq = {
1372 .type = KVM_S390_SIGP_STOP,
1373 };
1374
1375 if (s390_cpu_get_state(si->cpu) != CPU_STATE_OPERATING) {
1376 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1377 return;
1378 }
1379
1380
1381 if (CPU(si->cpu)->halted) {
1382 s390_cpu_set_state(CPU_STATE_STOPPED, si->cpu);
1383 } else {
1384
1385 si->cpu->env.sigp_order = SIGP_STOP;
1386 kvm_s390_vcpu_interrupt(si->cpu, &irq);
1387 }
1388 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1389}
1390
1391#define ADTL_SAVE_AREA_SIZE 1024
1392static int kvm_s390_store_adtl_status(S390CPU *cpu, hwaddr addr)
1393{
1394 void *mem;
1395 hwaddr len = ADTL_SAVE_AREA_SIZE;
1396
1397 mem = cpu_physical_memory_map(addr, &len, 1);
1398 if (!mem) {
1399 return -EFAULT;
1400 }
1401 if (len != ADTL_SAVE_AREA_SIZE) {
1402 cpu_physical_memory_unmap(mem, len, 1, 0);
1403 return -EFAULT;
1404 }
1405
1406 memcpy(mem, &cpu->env.vregs, 512);
1407
1408 cpu_physical_memory_unmap(mem, len, 1, len);
1409
1410 return 0;
1411}
1412
1413#define KVM_S390_STORE_STATUS_DEF_ADDR offsetof(LowCore, floating_pt_save_area)
1414#define SAVE_AREA_SIZE 512
1415static int kvm_s390_store_status(S390CPU *cpu, hwaddr addr, bool store_arch)
1416{
1417 static const uint8_t ar_id = 1;
1418 uint64_t ckc = cpu->env.ckc >> 8;
1419 void *mem;
1420 int i;
1421 hwaddr len = SAVE_AREA_SIZE;
1422
1423 mem = cpu_physical_memory_map(addr, &len, 1);
1424 if (!mem) {
1425 return -EFAULT;
1426 }
1427 if (len != SAVE_AREA_SIZE) {
1428 cpu_physical_memory_unmap(mem, len, 1, 0);
1429 return -EFAULT;
1430 }
1431
1432 if (store_arch) {
1433 cpu_physical_memory_write(offsetof(LowCore, ar_access_id), &ar_id, 1);
1434 }
1435 for (i = 0; i < 16; ++i) {
1436 *((uint64_t *)mem + i) = get_freg(&cpu->env, i)->ll;
1437 }
1438 memcpy(mem + 128, &cpu->env.regs, 128);
1439 memcpy(mem + 256, &cpu->env.psw, 16);
1440 memcpy(mem + 280, &cpu->env.psa, 4);
1441 memcpy(mem + 284, &cpu->env.fpc, 4);
1442 memcpy(mem + 292, &cpu->env.todpr, 4);
1443 memcpy(mem + 296, &cpu->env.cputm, 8);
1444 memcpy(mem + 304, &ckc, 8);
1445 memcpy(mem + 320, &cpu->env.aregs, 64);
1446 memcpy(mem + 384, &cpu->env.cregs, 128);
1447
1448 cpu_physical_memory_unmap(mem, len, 1, len);
1449
1450 return 0;
1451}
1452
1453static void sigp_stop_and_store_status(void *arg)
1454{
1455 SigpInfo *si = arg;
1456 struct kvm_s390_irq irq = {
1457 .type = KVM_S390_SIGP_STOP,
1458 };
1459
1460
1461 if (s390_cpu_get_state(si->cpu) == CPU_STATE_OPERATING &&
1462 CPU(si->cpu)->halted) {
1463 s390_cpu_set_state(CPU_STATE_STOPPED, si->cpu);
1464 }
1465
1466 switch (s390_cpu_get_state(si->cpu)) {
1467 case CPU_STATE_OPERATING:
1468 si->cpu->env.sigp_order = SIGP_STOP_STORE_STATUS;
1469 kvm_s390_vcpu_interrupt(si->cpu, &irq);
1470
1471 break;
1472 case CPU_STATE_STOPPED:
1473
1474 cpu_synchronize_state(CPU(si->cpu));
1475 kvm_s390_store_status(si->cpu, KVM_S390_STORE_STATUS_DEF_ADDR, true);
1476 break;
1477 }
1478 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1479}
1480
1481static void sigp_store_status_at_address(void *arg)
1482{
1483 SigpInfo *si = arg;
1484 uint32_t address = si->param & 0x7ffffe00u;
1485
1486
1487 if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
1488 set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
1489 return;
1490 }
1491
1492 cpu_synchronize_state(CPU(si->cpu));
1493
1494 if (kvm_s390_store_status(si->cpu, address, false)) {
1495 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1496 return;
1497 }
1498 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1499}
1500
1501static void sigp_store_adtl_status(void *arg)
1502{
1503 SigpInfo *si = arg;
1504
1505 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_VECTOR_REGISTERS)) {
1506 set_sigp_status(si, SIGP_STAT_INVALID_ORDER);
1507 return;
1508 }
1509
1510
1511 if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
1512 set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
1513 return;
1514 }
1515
1516
1517 if (si->param & 0x3ff) {
1518 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1519 return;
1520 }
1521
1522 cpu_synchronize_state(CPU(si->cpu));
1523
1524 if (kvm_s390_store_adtl_status(si->cpu, si->param)) {
1525 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1526 return;
1527 }
1528 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1529}
1530
1531static void sigp_restart(void *arg)
1532{
1533 SigpInfo *si = arg;
1534 struct kvm_s390_irq irq = {
1535 .type = KVM_S390_RESTART,
1536 };
1537
1538 switch (s390_cpu_get_state(si->cpu)) {
1539 case CPU_STATE_STOPPED:
1540
1541 cpu_synchronize_state(CPU(si->cpu));
1542 do_restart_interrupt(&si->cpu->env);
1543 s390_cpu_set_state(CPU_STATE_OPERATING, si->cpu);
1544 break;
1545 case CPU_STATE_OPERATING:
1546 kvm_s390_vcpu_interrupt(si->cpu, &irq);
1547 break;
1548 }
1549 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1550}
1551
1552int kvm_s390_cpu_restart(S390CPU *cpu)
1553{
1554 SigpInfo si = {
1555 .cpu = cpu,
1556 };
1557
1558 run_on_cpu(CPU(cpu), sigp_restart, &si);
1559 DPRINTF("DONE: KVM cpu restart: %p\n", &cpu->env);
1560 return 0;
1561}
1562
1563static void sigp_initial_cpu_reset(void *arg)
1564{
1565 SigpInfo *si = arg;
1566 CPUState *cs = CPU(si->cpu);
1567 S390CPUClass *scc = S390_CPU_GET_CLASS(si->cpu);
1568
1569 cpu_synchronize_state(cs);
1570 scc->initial_cpu_reset(cs);
1571 cpu_synchronize_post_reset(cs);
1572 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1573}
1574
1575static void sigp_cpu_reset(void *arg)
1576{
1577 SigpInfo *si = arg;
1578 CPUState *cs = CPU(si->cpu);
1579 S390CPUClass *scc = S390_CPU_GET_CLASS(si->cpu);
1580
1581 cpu_synchronize_state(cs);
1582 scc->cpu_reset(cs);
1583 cpu_synchronize_post_reset(cs);
1584 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1585}
1586
1587static void sigp_set_prefix(void *arg)
1588{
1589 SigpInfo *si = arg;
1590 uint32_t addr = si->param & 0x7fffe000u;
1591
1592 cpu_synchronize_state(CPU(si->cpu));
1593
1594 if (!address_space_access_valid(&address_space_memory, addr,
1595 sizeof(struct LowCore), false,
1596 MEMTXATTRS_UNSPECIFIED)) {
1597 set_sigp_status(si, SIGP_STAT_INVALID_PARAMETER);
1598 return;
1599 }
1600
1601
1602 if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
1603 set_sigp_status(si, SIGP_STAT_INCORRECT_STATE);
1604 return;
1605 }
1606
1607 si->cpu->env.psa = addr;
1608 cpu_synchronize_post_init(CPU(si->cpu));
1609 si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
1610}
1611
1612static int handle_sigp_single_dst(S390CPU *dst_cpu, uint8_t order,
1613 uint64_t param, uint64_t *status_reg)
1614{
1615 SigpInfo si = {
1616 .cpu = dst_cpu,
1617 .param = param,
1618 .status_reg = status_reg,
1619 };
1620
1621
1622 if (dst_cpu == NULL) {
1623 return SIGP_CC_NOT_OPERATIONAL;
1624 }
1625
1626
1627 if (dst_cpu->env.sigp_order != 0 &&
1628 order != SIGP_CPU_RESET &&
1629 order != SIGP_INITIAL_CPU_RESET) {
1630 return SIGP_CC_BUSY;
1631 }
1632
1633 switch (order) {
1634 case SIGP_START:
1635 run_on_cpu(CPU(dst_cpu), sigp_start, &si);
1636 break;
1637 case SIGP_STOP:
1638 run_on_cpu(CPU(dst_cpu), sigp_stop, &si);
1639 break;
1640 case SIGP_RESTART:
1641 run_on_cpu(CPU(dst_cpu), sigp_restart, &si);
1642 break;
1643 case SIGP_STOP_STORE_STATUS:
1644 run_on_cpu(CPU(dst_cpu), sigp_stop_and_store_status, &si);
1645 break;
1646 case SIGP_STORE_STATUS_ADDR:
1647 run_on_cpu(CPU(dst_cpu), sigp_store_status_at_address, &si);
1648 break;
1649 case SIGP_STORE_ADTL_STATUS:
1650 run_on_cpu(CPU(dst_cpu), sigp_store_adtl_status, &si);
1651 break;
1652 case SIGP_SET_PREFIX:
1653 run_on_cpu(CPU(dst_cpu), sigp_set_prefix, &si);
1654 break;
1655 case SIGP_INITIAL_CPU_RESET:
1656 run_on_cpu(CPU(dst_cpu), sigp_initial_cpu_reset, &si);
1657 break;
1658 case SIGP_CPU_RESET:
1659 run_on_cpu(CPU(dst_cpu), sigp_cpu_reset, &si);
1660 break;
1661 default:
1662 DPRINTF("KVM: unknown SIGP: 0x%x\n", order);
1663 set_sigp_status(&si, SIGP_STAT_INVALID_ORDER);
1664 }
1665
1666 return si.cc;
1667}
1668
1669static int sigp_set_architecture(S390CPU *cpu, uint32_t param,
1670 uint64_t *status_reg)
1671{
1672 CPUState *cur_cs;
1673 S390CPU *cur_cpu;
1674
1675
1676 CPU_FOREACH(cur_cs) {
1677 cur_cpu = S390_CPU(cur_cs);
1678 if (cur_cpu->env.sigp_order != 0) {
1679 return SIGP_CC_BUSY;
1680 }
1681 cpu_synchronize_state(cur_cs);
1682
1683 if (cur_cpu != cpu &&
1684 s390_cpu_get_state(cur_cpu) != CPU_STATE_STOPPED) {
1685 *status_reg &= 0xffffffff00000000ULL;
1686 *status_reg |= SIGP_STAT_INCORRECT_STATE;
1687 return SIGP_CC_STATUS_STORED;
1688 }
1689 }
1690
1691 switch (param & 0xff) {
1692 case SIGP_MODE_ESA_S390:
1693
1694 return SIGP_CC_NOT_OPERATIONAL;
1695 case SIGP_MODE_Z_ARCH_TRANS_ALL_PSW:
1696 case SIGP_MODE_Z_ARCH_TRANS_CUR_PSW:
1697 CPU_FOREACH(cur_cs) {
1698 cur_cpu = S390_CPU(cur_cs);
1699 cur_cpu->env.pfault_token = -1UL;
1700 }
1701 break;
1702 default:
1703 *status_reg &= 0xffffffff00000000ULL;
1704 *status_reg |= SIGP_STAT_INVALID_PARAMETER;
1705 return SIGP_CC_STATUS_STORED;
1706 }
1707
1708 return SIGP_CC_ORDER_CODE_ACCEPTED;
1709}
1710
1711#define SIGP_ORDER_MASK 0x000000ff
1712
1713static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1)
1714{
1715 CPUS390XState *env = &cpu->env;
1716 const uint8_t r1 = ipa1 >> 4;
1717 const uint8_t r3 = ipa1 & 0x0f;
1718 int ret;
1719 uint8_t order;
1720 uint64_t *status_reg;
1721 uint64_t param;
1722 S390CPU *dst_cpu = NULL;
1723
1724 cpu_synchronize_state(CPU(cpu));
1725
1726
1727 order = decode_basedisp_rs(env, run->s390_sieic.ipb, NULL)
1728 & SIGP_ORDER_MASK;
1729 status_reg = &env->regs[r1];
1730 param = (r1 % 2) ? env->regs[r1] : env->regs[r1 + 1];
1731
1732 switch (order) {
1733 case SIGP_SET_ARCH:
1734 ret = sigp_set_architecture(cpu, param, status_reg);
1735 break;
1736 default:
1737
1738 dst_cpu = s390_cpu_addr2state(env->regs[r3]);
1739 ret = handle_sigp_single_dst(dst_cpu, order, param, status_reg);
1740 }
1741
1742 trace_kvm_sigp_finished(order, CPU(cpu)->cpu_index,
1743 dst_cpu ? CPU(dst_cpu)->cpu_index : -1, ret);
1744
1745 if (ret >= 0) {
1746 setcc(cpu, ret);
1747 return 0;
1748 }
1749
1750 return ret;
1751}
1752
1753static int handle_instruction(S390CPU *cpu, struct kvm_run *run)
1754{
1755 unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00);
1756 uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff;
1757 int r = -1;
1758
1759 DPRINTF("handle_instruction 0x%x 0x%x\n",
1760 run->s390_sieic.ipa, run->s390_sieic.ipb);
1761 switch (ipa0) {
1762 case IPA0_B2:
1763 r = handle_b2(cpu, run, ipa1);
1764 break;
1765 case IPA0_B9:
1766 r = handle_b9(cpu, run, ipa1);
1767 break;
1768 case IPA0_EB:
1769 r = handle_eb(cpu, run, run->s390_sieic.ipb & 0xff);
1770 break;
1771 case IPA0_E3:
1772 r = handle_e3(cpu, run, run->s390_sieic.ipb & 0xff);
1773 break;
1774 case IPA0_DIAG:
1775 r = handle_diag(cpu, run, run->s390_sieic.ipb);
1776 break;
1777 case IPA0_SIGP:
1778 r = handle_sigp(cpu, run, ipa1);
1779 break;
1780 }
1781
1782 if (r < 0) {
1783 r = 0;
1784 enter_pgmcheck(cpu, 0x0001);
1785 }
1786
1787 return r;
1788}
1789
1790static bool is_special_wait_psw(CPUState *cs)
1791{
1792
1793 return cs->kvm_run->psw_addr == 0xfffUL;
1794}
1795
1796static void unmanageable_intercept(S390CPU *cpu, const char *str, int pswoffset)
1797{
1798 CPUState *cs = CPU(cpu);
1799
1800 error_report("Unmanageable %s! CPU%i new PSW: 0x%016lx:%016lx",
1801 str, cs->cpu_index, ldq_phys(cs->as, cpu->env.psa + pswoffset),
1802 ldq_phys(cs->as, cpu->env.psa + pswoffset + 8));
1803 s390_cpu_halt(cpu);
1804 qemu_system_guest_panicked();
1805}
1806
1807static int handle_intercept(S390CPU *cpu)
1808{
1809 CPUState *cs = CPU(cpu);
1810 struct kvm_run *run = cs->kvm_run;
1811 int icpt_code = run->s390_sieic.icptcode;
1812 int r = 0;
1813
1814 DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code,
1815 (long)cs->kvm_run->psw_addr);
1816 switch (icpt_code) {
1817 case ICPT_INSTRUCTION:
1818 r = handle_instruction(cpu, run);
1819 break;
1820 case ICPT_PROGRAM:
1821 unmanageable_intercept(cpu, "program interrupt",
1822 offsetof(LowCore, program_new_psw));
1823 r = EXCP_HALTED;
1824 break;
1825 case ICPT_EXT_INT:
1826 unmanageable_intercept(cpu, "external interrupt",
1827 offsetof(LowCore, external_new_psw));
1828 r = EXCP_HALTED;
1829 break;
1830 case ICPT_WAITPSW:
1831
1832 cpu_synchronize_state(cs);
1833 if (s390_cpu_halt(cpu) == 0) {
1834 if (is_special_wait_psw(cs)) {
1835 qemu_system_shutdown_request();
1836 } else {
1837 qemu_system_guest_panicked();
1838 }
1839 }
1840 r = EXCP_HALTED;
1841 break;
1842 case ICPT_CPU_STOP:
1843 if (s390_cpu_set_state(CPU_STATE_STOPPED, cpu) == 0) {
1844 qemu_system_shutdown_request();
1845 }
1846 if (cpu->env.sigp_order == SIGP_STOP_STORE_STATUS) {
1847 kvm_s390_store_status(cpu, KVM_S390_STORE_STATUS_DEF_ADDR,
1848 true);
1849 }
1850 cpu->env.sigp_order = 0;
1851 r = EXCP_HALTED;
1852 break;
1853 case ICPT_SOFT_INTERCEPT:
1854 fprintf(stderr, "KVM unimplemented icpt SOFT\n");
1855 exit(1);
1856 break;
1857 case ICPT_IO:
1858 fprintf(stderr, "KVM unimplemented icpt IO\n");
1859 exit(1);
1860 break;
1861 default:
1862 fprintf(stderr, "Unknown intercept code: %d\n", icpt_code);
1863 exit(1);
1864 break;
1865 }
1866
1867 return r;
1868}
1869
1870static int handle_tsch(S390CPU *cpu)
1871{
1872 CPUState *cs = CPU(cpu);
1873 struct kvm_run *run = cs->kvm_run;
1874 int ret;
1875
1876 cpu_synchronize_state(cs);
1877
1878 ret = ioinst_handle_tsch(cpu, cpu->env.regs[1], run->s390_tsch.ipb);
1879 if (ret < 0) {
1880
1881
1882
1883
1884 if (run->s390_tsch.dequeued) {
1885 kvm_s390_io_interrupt(run->s390_tsch.subchannel_id,
1886 run->s390_tsch.subchannel_nr,
1887 run->s390_tsch.io_int_parm,
1888 run->s390_tsch.io_int_word);
1889 }
1890 ret = 0;
1891 }
1892 return ret;
1893}
1894
1895static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar)
1896{
1897 struct sysib_322 sysib;
1898 int del;
1899
1900 if (s390_cpu_virt_mem_read(cpu, addr, ar, &sysib, sizeof(sysib))) {
1901 return;
1902 }
1903
1904 memmove(&sysib.ext_names[1], &sysib.ext_names[0],
1905 sizeof(sysib.ext_names[0]) * (sysib.count - 1));
1906
1907
1908
1909 for (del = 1; del < sysib.count; del++) {
1910 if (!sysib.vm[del].ext_name_encoding || !sysib.ext_names[del][0]) {
1911 break;
1912 }
1913 }
1914 if (del < sysib.count) {
1915 memset(sysib.ext_names[del], 0,
1916 sizeof(sysib.ext_names[0]) * (sysib.count - del));
1917 }
1918
1919 if (qemu_name) {
1920 memset(sysib.vm[0].name, 0x40, sizeof(sysib.vm[0].name));
1921 ebcdic_put(sysib.vm[0].name, qemu_name, MIN(sizeof(sysib.vm[0].name),
1922 strlen(qemu_name)));
1923 }
1924 sysib.vm[0].ext_name_encoding = 2;
1925 memset(sysib.ext_names[0], 0, sizeof(sysib.ext_names[0]));
1926
1927
1928
1929
1930
1931 if (qemu_name) {
1932 strncpy((char *)sysib.ext_names[0], qemu_name,
1933 sizeof(sysib.ext_names[0]));
1934 } else {
1935 strcpy((char *)sysib.ext_names[0], "KVMguest");
1936 }
1937
1938 memcpy(sysib.vm[0].uuid, qemu_uuid, sizeof(sysib.vm[0].uuid));
1939
1940 s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib));
1941}
1942
1943static int handle_stsi(S390CPU *cpu)
1944{
1945 CPUState *cs = CPU(cpu);
1946 struct kvm_run *run = cs->kvm_run;
1947
1948 switch (run->s390_stsi.fc) {
1949 case 3:
1950 if (run->s390_stsi.sel1 != 2 || run->s390_stsi.sel2 != 2) {
1951 return 0;
1952 }
1953
1954 insert_stsi_3_2_2(cpu, run->s390_stsi.addr, run->s390_stsi.ar);
1955 return 0;
1956 default:
1957 return 0;
1958 }
1959}
1960
1961static int kvm_arch_handle_debug_exit(S390CPU *cpu)
1962{
1963 CPUState *cs = CPU(cpu);
1964 struct kvm_run *run = cs->kvm_run;
1965
1966 int ret = 0;
1967 struct kvm_debug_exit_arch *arch_info = &run->debug.arch;
1968
1969 switch (arch_info->type) {
1970 case KVM_HW_WP_WRITE:
1971 if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
1972 cs->watchpoint_hit = &hw_watchpoint;
1973 hw_watchpoint.vaddr = arch_info->addr;
1974 hw_watchpoint.flags = BP_MEM_WRITE;
1975 ret = EXCP_DEBUG;
1976 }
1977 break;
1978 case KVM_HW_BP:
1979 if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) {
1980 ret = EXCP_DEBUG;
1981 }
1982 break;
1983 case KVM_SINGLESTEP:
1984 if (cs->singlestep_enabled) {
1985 ret = EXCP_DEBUG;
1986 }
1987 break;
1988 default:
1989 ret = -ENOSYS;
1990 }
1991
1992 return ret;
1993}
1994
1995int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
1996{
1997 S390CPU *cpu = S390_CPU(cs);
1998 int ret = 0;
1999
2000 qemu_mutex_lock_iothread();
2001
2002 switch (run->exit_reason) {
2003 case KVM_EXIT_S390_SIEIC:
2004 ret = handle_intercept(cpu);
2005 break;
2006 case KVM_EXIT_S390_RESET:
2007 s390_reipl_request();
2008 break;
2009 case KVM_EXIT_S390_TSCH:
2010 ret = handle_tsch(cpu);
2011 break;
2012 case KVM_EXIT_S390_STSI:
2013 ret = handle_stsi(cpu);
2014 break;
2015 case KVM_EXIT_DEBUG:
2016 ret = kvm_arch_handle_debug_exit(cpu);
2017 break;
2018 default:
2019 fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason);
2020 break;
2021 }
2022 qemu_mutex_unlock_iothread();
2023
2024 if (ret == 0) {
2025 ret = EXCP_INTERRUPT;
2026 }
2027 return ret;
2028}
2029
2030bool kvm_arch_stop_on_emulation_error(CPUState *cpu)
2031{
2032 return true;
2033}
2034
2035int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr)
2036{
2037 return 1;
2038}
2039
2040int kvm_arch_on_sigbus(int code, void *addr)
2041{
2042 return 1;
2043}
2044
2045void kvm_s390_io_interrupt(uint16_t subchannel_id,
2046 uint16_t subchannel_nr, uint32_t io_int_parm,
2047 uint32_t io_int_word)
2048{
2049 struct kvm_s390_irq irq = {
2050 .u.io.subchannel_id = subchannel_id,
2051 .u.io.subchannel_nr = subchannel_nr,
2052 .u.io.io_int_parm = io_int_parm,
2053 .u.io.io_int_word = io_int_word,
2054 };
2055
2056 if (io_int_word & IO_INT_WORD_AI) {
2057 irq.type = KVM_S390_INT_IO(1, 0, 0, 0);
2058 } else {
2059 irq.type = ((subchannel_id & 0xff00) << 24) |
2060 ((subchannel_id & 0x00060) << 22) | (subchannel_nr << 16);
2061 }
2062 kvm_s390_floating_interrupt(&irq);
2063}
2064
2065static uint64_t build_channel_report_mcic(void)
2066{
2067 uint64_t mcic;
2068
2069
2070 mcic = MCIC_SC_CP |
2071
2072
2073
2074 MCIC_VB_WP | MCIC_VB_MS | MCIC_VB_PM | MCIC_VB_IA | MCIC_VB_FP |
2075 MCIC_VB_GR | MCIC_VB_CR | MCIC_VB_ST | MCIC_VB_AR | MCIC_VB_PR |
2076 MCIC_VB_FC | MCIC_VB_CT | MCIC_VB_CC;
2077 if (kvm_check_extension(kvm_state, KVM_CAP_S390_VECTOR_REGISTERS)) {
2078 mcic |= MCIC_VB_VR;
2079 }
2080 return mcic;
2081}
2082
2083void kvm_s390_crw_mchk(void)
2084{
2085 struct kvm_s390_irq irq = {
2086 .type = KVM_S390_MCHK,
2087 .u.mchk.cr14 = 1 << 28,
2088 .u.mchk.mcic = build_channel_report_mcic(),
2089 };
2090 kvm_s390_floating_interrupt(&irq);
2091}
2092
2093void kvm_s390_enable_css_support(S390CPU *cpu)
2094{
2095 int r;
2096
2097
2098 r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0);
2099 assert(r == 0);
2100}
2101
2102void kvm_arch_init_irq_routing(KVMState *s)
2103{
2104
2105
2106
2107
2108
2109 if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) {
2110 kvm_gsi_routing_allowed = true;
2111 kvm_halt_in_kernel_allowed = false;
2112 }
2113}
2114
2115int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch,
2116 int vq, bool assign)
2117{
2118 struct kvm_ioeventfd kick = {
2119 .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY |
2120 KVM_IOEVENTFD_FLAG_DATAMATCH,
2121 .fd = event_notifier_get_fd(notifier),
2122 .datamatch = vq,
2123 .addr = sch,
2124 .len = 8,
2125 };
2126 if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) {
2127 return -ENOSYS;
2128 }
2129 if (!assign) {
2130 kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN;
2131 }
2132 return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick);
2133}
2134
2135int kvm_s390_get_memslot_count(KVMState *s)
2136{
2137 return kvm_check_extension(s, KVM_CAP_NR_MEMSLOTS);
2138}
2139
2140int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state)
2141{
2142 struct kvm_mp_state mp_state = {};
2143 int ret;
2144
2145
2146 if (CPU(cpu)->kvm_state == NULL) {
2147 return 0;
2148 }
2149
2150 switch (cpu_state) {
2151 case CPU_STATE_STOPPED:
2152 mp_state.mp_state = KVM_MP_STATE_STOPPED;
2153 break;
2154 case CPU_STATE_CHECK_STOP:
2155 mp_state.mp_state = KVM_MP_STATE_CHECK_STOP;
2156 break;
2157 case CPU_STATE_OPERATING:
2158 mp_state.mp_state = KVM_MP_STATE_OPERATING;
2159 break;
2160 case CPU_STATE_LOAD:
2161 mp_state.mp_state = KVM_MP_STATE_LOAD;
2162 break;
2163 default:
2164 error_report("Requested CPU state is not a valid S390 CPU state: %u",
2165 cpu_state);
2166 exit(1);
2167 }
2168
2169 ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state);
2170 if (ret) {
2171 trace_kvm_failed_cpu_state_set(CPU(cpu)->cpu_index, cpu_state,
2172 strerror(-ret));
2173 }
2174
2175 return ret;
2176}
2177
2178void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu)
2179{
2180 struct kvm_s390_irq_state irq_state;
2181 CPUState *cs = CPU(cpu);
2182 int32_t bytes;
2183
2184 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
2185 return;
2186 }
2187
2188 irq_state.buf = (uint64_t) cpu->irqstate;
2189 irq_state.len = VCPU_IRQ_BUF_SIZE;
2190
2191 bytes = kvm_vcpu_ioctl(cs, KVM_S390_GET_IRQ_STATE, &irq_state);
2192 if (bytes < 0) {
2193 cpu->irqstate_saved_size = 0;
2194 error_report("Migration of interrupt state failed");
2195 return;
2196 }
2197
2198 cpu->irqstate_saved_size = bytes;
2199}
2200
2201int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu)
2202{
2203 CPUState *cs = CPU(cpu);
2204 struct kvm_s390_irq_state irq_state;
2205 int r;
2206
2207 if (cpu->irqstate_saved_size == 0) {
2208 return 0;
2209 }
2210
2211 if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) {
2212 return -ENOSYS;
2213 }
2214
2215 irq_state.buf = (uint64_t) cpu->irqstate;
2216 irq_state.len = cpu->irqstate_saved_size;
2217
2218 r = kvm_vcpu_ioctl(cs, KVM_S390_SET_IRQ_STATE, &irq_state);
2219 if (r) {
2220 error_report("Setting interrupt state failed %d", r);
2221 }
2222 return r;
2223}
2224
2225int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
2226 uint64_t address, uint32_t data, PCIDevice *dev)
2227{
2228 S390PCIBusDevice *pbdev;
2229 uint32_t fid = data >> ZPCI_MSI_VEC_BITS;
2230 uint32_t vec = data & ZPCI_MSI_VEC_MASK;
2231
2232 pbdev = s390_pci_find_dev_by_fid(fid);
2233 if (!pbdev) {
2234 DPRINTF("add_msi_route no dev\n");
2235 return -ENODEV;
2236 }
2237
2238 pbdev->routes.adapter.ind_offset = vec;
2239
2240 route->type = KVM_IRQ_ROUTING_S390_ADAPTER;
2241 route->flags = 0;
2242 route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr;
2243 route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr;
2244 route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset;
2245 route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset;
2246 route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id;
2247 return 0;
2248}
2249
2250int kvm_arch_msi_data_to_gsi(uint32_t data)
2251{
2252 abort();
2253}
2254