2 * S/390 misc helper routines
4 * Copyright (c) 2009 Ulrich Hecht
5 * Copyright (c) 2009 Alexander Graf
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
21 #include "qemu/osdep.h"
22 #include "qemu/main-loop.h"
24 #include "exec/memory.h"
25 #include "qemu/host-utils.h"
26 #include "exec/helper-proto.h"
27 #include "sysemu/kvm.h"
28 #include "qemu/timer.h"
29 #include "qemu/main-loop.h"
30 #include "exec/address-spaces.h"
32 #include <linux/kvm.h>
34 #include "exec/exec-all.h"
35 #include "exec/cpu_ldst.h"
37 #if !defined(CONFIG_USER_ONLY)
38 #include "hw/watchdog/wdt_diag288.h"
39 #include "sysemu/cpus.h"
40 #include "sysemu/sysemu.h"
41 #include "hw/s390x/ebcdic.h"
42 #include "hw/s390x/ipl.h"
45 /* #define DEBUG_HELPER */
47 #define HELPER_LOG(x...) qemu_log(x)
49 #define HELPER_LOG(x...)
52 /* Raise an exception dynamically from a helper function. */
53 void QEMU_NORETURN
runtime_exception(CPUS390XState
*env
, int excp
,
56 CPUState
*cs
= CPU(s390_env_get_cpu(env
));
59 cs
->exception_index
= EXCP_PGM
;
60 env
->int_pgm_code
= excp
;
62 /* Use the (ultimate) callers address to find the insn that trapped. */
63 cpu_restore_state(cs
, retaddr
);
65 /* Advance past the insn. */
66 t
= cpu_ldub_code(env
, env
->psw
.addr
);
67 env
->int_pgm_ilen
= t
= get_ilen(t
);
73 /* Raise an exception statically from a TB. */
74 void HELPER(exception
)(CPUS390XState
*env
, uint32_t excp
)
76 CPUState
*cs
= CPU(s390_env_get_cpu(env
));
78 HELPER_LOG("%s: exception %d\n", __func__
, excp
);
79 cs
->exception_index
= excp
;
83 #ifndef CONFIG_USER_ONLY
85 void program_interrupt(CPUS390XState
*env
, uint32_t code
, int ilen
)
87 S390CPU
*cpu
= s390_env_get_cpu(env
);
89 qemu_log_mask(CPU_LOG_INT
, "program interrupt at %#" PRIx64
"\n",
94 struct kvm_s390_irq irq
= {
95 .type
= KVM_S390_PROGRAM_INT
,
99 kvm_s390_vcpu_interrupt(cpu
, &irq
);
102 CPUState
*cs
= CPU(cpu
);
104 env
->int_pgm_code
= code
;
105 env
->int_pgm_ilen
= ilen
;
106 cs
->exception_index
= EXCP_PGM
;
111 /* SCLP service call */
112 uint32_t HELPER(servc
)(CPUS390XState
*env
, uint64_t r1
, uint64_t r2
)
114 qemu_mutex_lock_iothread();
115 int r
= sclp_service_call(env
, r1
, r2
);
117 program_interrupt(env
, -r
, 4);
120 qemu_mutex_unlock_iothread();
124 #ifndef CONFIG_USER_ONLY
125 static int modified_clear_reset(S390CPU
*cpu
)
127 S390CPUClass
*scc
= S390_CPU_GET_CLASS(cpu
);
131 cpu_synchronize_all_states();
133 run_on_cpu(t
, s390_do_cpu_full_reset
, RUN_ON_CPU_NULL
);
138 scc
->load_normal(CPU(cpu
));
139 cpu_synchronize_all_post_reset();
144 static int load_normal_reset(S390CPU
*cpu
)
146 S390CPUClass
*scc
= S390_CPU_GET_CLASS(cpu
);
150 cpu_synchronize_all_states();
152 run_on_cpu(t
, s390_do_cpu_reset
, RUN_ON_CPU_NULL
);
156 scc
->initial_cpu_reset(CPU(cpu
));
157 scc
->load_normal(CPU(cpu
));
158 cpu_synchronize_all_post_reset();
163 int handle_diag_288(CPUS390XState
*env
, uint64_t r1
, uint64_t r3
)
165 uint64_t func
= env
->regs
[r1
];
166 uint64_t timeout
= env
->regs
[r1
+ 1];
167 uint64_t action
= env
->regs
[r3
];
169 DIAG288State
*diag288
;
170 DIAG288Class
*diag288_class
;
172 if (r1
% 2 || action
!= 0) {
176 /* Timeout must be more than 15 seconds except for timer deletion */
177 if (func
!= WDT_DIAG288_CANCEL
&& timeout
< 15) {
181 obj
= object_resolve_path_type("", TYPE_WDT_DIAG288
, NULL
);
186 diag288
= DIAG288(obj
);
187 diag288_class
= DIAG288_GET_CLASS(diag288
);
188 return diag288_class
->handle_timer(diag288
, func
, timeout
);
191 #define DIAG_308_RC_OK 0x0001
192 #define DIAG_308_RC_NO_CONF 0x0102
193 #define DIAG_308_RC_INVALID 0x0402
195 void handle_diag_308(CPUS390XState
*env
, uint64_t r1
, uint64_t r3
)
197 uint64_t addr
= env
->regs
[r1
];
198 uint64_t subcode
= env
->regs
[r3
];
199 IplParameterBlock
*iplb
;
201 if (env
->psw
.mask
& PSW_MASK_PSTATE
) {
202 program_interrupt(env
, PGM_PRIVILEGED
, ILEN_LATER_INC
);
206 if ((subcode
& ~0x0ffffULL
) || (subcode
> 6)) {
207 program_interrupt(env
, PGM_SPECIFICATION
, ILEN_LATER_INC
);
213 modified_clear_reset(s390_env_get_cpu(env
));
215 cpu_loop_exit(CPU(s390_env_get_cpu(env
)));
219 load_normal_reset(s390_env_get_cpu(env
));
221 cpu_loop_exit(CPU(s390_env_get_cpu(env
)));
225 s390_reipl_request();
227 cpu_loop_exit(CPU(s390_env_get_cpu(env
)));
231 if ((r1
& 1) || (addr
& 0x0fffULL
)) {
232 program_interrupt(env
, PGM_SPECIFICATION
, ILEN_LATER_INC
);
235 if (!address_space_access_valid(&address_space_memory
, addr
,
236 sizeof(IplParameterBlock
), false)) {
237 program_interrupt(env
, PGM_ADDRESSING
, ILEN_LATER_INC
);
240 iplb
= g_malloc0(sizeof(IplParameterBlock
));
241 cpu_physical_memory_read(addr
, iplb
, sizeof(iplb
->len
));
242 if (!iplb_valid_len(iplb
)) {
243 env
->regs
[r1
+ 1] = DIAG_308_RC_INVALID
;
247 cpu_physical_memory_read(addr
, iplb
, be32_to_cpu(iplb
->len
));
249 if (!iplb_valid_ccw(iplb
) && !iplb_valid_fcp(iplb
)) {
250 env
->regs
[r1
+ 1] = DIAG_308_RC_INVALID
;
254 s390_ipl_update_diag308(iplb
);
255 env
->regs
[r1
+ 1] = DIAG_308_RC_OK
;
260 if ((r1
& 1) || (addr
& 0x0fffULL
)) {
261 program_interrupt(env
, PGM_SPECIFICATION
, ILEN_LATER_INC
);
264 if (!address_space_access_valid(&address_space_memory
, addr
,
265 sizeof(IplParameterBlock
), true)) {
266 program_interrupt(env
, PGM_ADDRESSING
, ILEN_LATER_INC
);
269 iplb
= s390_ipl_get_iplb();
271 cpu_physical_memory_write(addr
, iplb
, be32_to_cpu(iplb
->len
));
272 env
->regs
[r1
+ 1] = DIAG_308_RC_OK
;
274 env
->regs
[r1
+ 1] = DIAG_308_RC_NO_CONF
;
278 hw_error("Unhandled diag308 subcode %" PRIx64
, subcode
);
284 void HELPER(diag
)(CPUS390XState
*env
, uint32_t r1
, uint32_t r3
, uint32_t num
)
291 qemu_mutex_lock_iothread();
292 r
= s390_virtio_hypercall(env
);
293 qemu_mutex_unlock_iothread();
301 handle_diag_308(env
, r1
, r3
);
310 program_interrupt(env
, PGM_OPERATION
, ILEN_LATER_INC
);
315 void HELPER(spx
)(CPUS390XState
*env
, uint64_t a1
)
317 CPUState
*cs
= CPU(s390_env_get_cpu(env
));
318 uint32_t prefix
= a1
& 0x7fffe000;
321 HELPER_LOG("prefix: %#x\n", prefix
);
322 tlb_flush_page(cs
, 0);
323 tlb_flush_page(cs
, TARGET_PAGE_SIZE
);
327 uint64_t HELPER(stck
)(CPUS390XState
*env
)
331 time
= env
->tod_offset
+
332 time2tod(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) - env
->tod_basetime
);
337 /* Set Clock Comparator */
338 void HELPER(sckc
)(CPUS390XState
*env
, uint64_t time
)
346 /* difference between origins */
347 time
-= env
->tod_offset
;
350 time
= tod2time(time
);
352 timer_mod(env
->tod_timer
, env
->tod_basetime
+ time
);
355 /* Store Clock Comparator */
356 uint64_t HELPER(stckc
)(CPUS390XState
*env
)
362 void HELPER(spt
)(CPUS390XState
*env
, uint64_t time
)
369 time
= tod2time(time
);
371 env
->cputm
= qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) + time
;
373 timer_mod(env
->cpu_timer
, env
->cputm
);
376 /* Store CPU Timer */
377 uint64_t HELPER(stpt
)(CPUS390XState
*env
)
379 return time2tod(env
->cputm
- qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
));
382 /* Store System Information */
383 uint32_t HELPER(stsi
)(CPUS390XState
*env
, uint64_t a0
,
384 uint64_t r0
, uint64_t r1
)
389 if ((r0
& STSI_LEVEL_MASK
) <= STSI_LEVEL_3
&&
390 ((r0
& STSI_R0_RESERVED_MASK
) || (r1
& STSI_R1_RESERVED_MASK
))) {
391 /* valid function code, invalid reserved bits */
392 program_interrupt(env
, PGM_SPECIFICATION
, 2);
395 sel1
= r0
& STSI_R0_SEL1_MASK
;
396 sel2
= r1
& STSI_R1_SEL2_MASK
;
398 /* XXX: spec exception if sysib is not 4k-aligned */
400 switch (r0
& STSI_LEVEL_MASK
) {
402 if ((sel1
== 1) && (sel2
== 1)) {
403 /* Basic Machine Configuration */
404 struct sysib_111 sysib
;
406 memset(&sysib
, 0, sizeof(sysib
));
407 ebcdic_put(sysib
.manuf
, "QEMU ", 16);
408 /* same as machine type number in STORE CPU ID */
409 ebcdic_put(sysib
.type
, "QEMU", 4);
410 /* same as model number in STORE CPU ID */
411 ebcdic_put(sysib
.model
, "QEMU ", 16);
412 ebcdic_put(sysib
.sequence
, "QEMU ", 16);
413 ebcdic_put(sysib
.plant
, "QEMU", 4);
414 cpu_physical_memory_write(a0
, &sysib
, sizeof(sysib
));
415 } else if ((sel1
== 2) && (sel2
== 1)) {
416 /* Basic Machine CPU */
417 struct sysib_121 sysib
;
419 memset(&sysib
, 0, sizeof(sysib
));
420 /* XXX make different for different CPUs? */
421 ebcdic_put(sysib
.sequence
, "QEMUQEMUQEMUQEMU", 16);
422 ebcdic_put(sysib
.plant
, "QEMU", 4);
423 stw_p(&sysib
.cpu_addr
, env
->cpu_num
);
424 cpu_physical_memory_write(a0
, &sysib
, sizeof(sysib
));
425 } else if ((sel1
== 2) && (sel2
== 2)) {
426 /* Basic Machine CPUs */
427 struct sysib_122 sysib
;
429 memset(&sysib
, 0, sizeof(sysib
));
430 stl_p(&sysib
.capability
, 0x443afc29);
431 /* XXX change when SMP comes */
432 stw_p(&sysib
.total_cpus
, 1);
433 stw_p(&sysib
.active_cpus
, 1);
434 stw_p(&sysib
.standby_cpus
, 0);
435 stw_p(&sysib
.reserved_cpus
, 0);
436 cpu_physical_memory_write(a0
, &sysib
, sizeof(sysib
));
443 if ((sel1
== 2) && (sel2
== 1)) {
445 struct sysib_221 sysib
;
447 memset(&sysib
, 0, sizeof(sysib
));
448 /* XXX make different for different CPUs? */
449 ebcdic_put(sysib
.sequence
, "QEMUQEMUQEMUQEMU", 16);
450 ebcdic_put(sysib
.plant
, "QEMU", 4);
451 stw_p(&sysib
.cpu_addr
, env
->cpu_num
);
452 stw_p(&sysib
.cpu_id
, 0);
453 cpu_physical_memory_write(a0
, &sysib
, sizeof(sysib
));
454 } else if ((sel1
== 2) && (sel2
== 2)) {
456 struct sysib_222 sysib
;
458 memset(&sysib
, 0, sizeof(sysib
));
459 stw_p(&sysib
.lpar_num
, 0);
461 /* XXX change when SMP comes */
462 stw_p(&sysib
.total_cpus
, 1);
463 stw_p(&sysib
.conf_cpus
, 1);
464 stw_p(&sysib
.standby_cpus
, 0);
465 stw_p(&sysib
.reserved_cpus
, 0);
466 ebcdic_put(sysib
.name
, "QEMU ", 8);
467 stl_p(&sysib
.caf
, 1000);
468 stw_p(&sysib
.dedicated_cpus
, 0);
469 stw_p(&sysib
.shared_cpus
, 0);
470 cpu_physical_memory_write(a0
, &sysib
, sizeof(sysib
));
478 if ((sel1
== 2) && (sel2
== 2)) {
480 struct sysib_322 sysib
;
482 memset(&sysib
, 0, sizeof(sysib
));
484 /* XXX change when SMP comes */
485 stw_p(&sysib
.vm
[0].total_cpus
, 1);
486 stw_p(&sysib
.vm
[0].conf_cpus
, 1);
487 stw_p(&sysib
.vm
[0].standby_cpus
, 0);
488 stw_p(&sysib
.vm
[0].reserved_cpus
, 0);
489 ebcdic_put(sysib
.vm
[0].name
, "KVMguest", 8);
490 stl_p(&sysib
.vm
[0].caf
, 1000);
491 ebcdic_put(sysib
.vm
[0].cpi
, "KVM/Linux ", 16);
492 cpu_physical_memory_write(a0
, &sysib
, sizeof(sysib
));
498 case STSI_LEVEL_CURRENT
:
499 env
->regs
[0] = STSI_LEVEL_3
;
509 uint32_t HELPER(sigp
)(CPUS390XState
*env
, uint64_t order_code
, uint32_t r1
,
512 int cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
514 HELPER_LOG("%s: %016" PRIx64
" %08x %016" PRIx64
"\n",
515 __func__
, order_code
, r1
, cpu_addr
);
517 /* Remember: Use "R1 or R1 + 1, whichever is the odd-numbered register"
518 as parameter (input). Status (output) is always R1. */
520 /* sigp contains the order code in bit positions 56-63, mask it here. */
521 switch (order_code
& 0xff) {
526 /* enumerate CPU status */
528 /* XXX implement when SMP comes */
531 env
->regs
[r1
] &= 0xffffffff00000000ULL
;
534 #if !defined(CONFIG_USER_ONLY)
536 qemu_system_reset_request();
537 cpu_loop_exit(CPU(s390_env_get_cpu(env
)));
540 qemu_system_shutdown_request();
541 cpu_loop_exit(CPU(s390_env_get_cpu(env
)));
546 fprintf(stderr
, "XXX unknown sigp: 0x%" PRIx64
"\n", order_code
);
547 cc
= SIGP_CC_NOT_OPERATIONAL
;
554 #ifndef CONFIG_USER_ONLY
555 void HELPER(xsch
)(CPUS390XState
*env
, uint64_t r1
)
557 S390CPU
*cpu
= s390_env_get_cpu(env
);
558 qemu_mutex_lock_iothread();
559 ioinst_handle_xsch(cpu
, r1
);
560 qemu_mutex_unlock_iothread();
563 void HELPER(csch
)(CPUS390XState
*env
, uint64_t r1
)
565 S390CPU
*cpu
= s390_env_get_cpu(env
);
566 qemu_mutex_lock_iothread();
567 ioinst_handle_csch(cpu
, r1
);
568 qemu_mutex_unlock_iothread();
571 void HELPER(hsch
)(CPUS390XState
*env
, uint64_t r1
)
573 S390CPU
*cpu
= s390_env_get_cpu(env
);
574 qemu_mutex_lock_iothread();
575 ioinst_handle_hsch(cpu
, r1
);
576 qemu_mutex_unlock_iothread();
579 void HELPER(msch
)(CPUS390XState
*env
, uint64_t r1
, uint64_t inst
)
581 S390CPU
*cpu
= s390_env_get_cpu(env
);
582 qemu_mutex_lock_iothread();
583 ioinst_handle_msch(cpu
, r1
, inst
>> 16);
584 qemu_mutex_unlock_iothread();
587 void HELPER(rchp
)(CPUS390XState
*env
, uint64_t r1
)
589 S390CPU
*cpu
= s390_env_get_cpu(env
);
590 qemu_mutex_lock_iothread();
591 ioinst_handle_rchp(cpu
, r1
);
592 qemu_mutex_unlock_iothread();
595 void HELPER(rsch
)(CPUS390XState
*env
, uint64_t r1
)
597 S390CPU
*cpu
= s390_env_get_cpu(env
);
598 qemu_mutex_lock_iothread();
599 ioinst_handle_rsch(cpu
, r1
);
600 qemu_mutex_unlock_iothread();
603 void HELPER(ssch
)(CPUS390XState
*env
, uint64_t r1
, uint64_t inst
)
605 S390CPU
*cpu
= s390_env_get_cpu(env
);
606 qemu_mutex_lock_iothread();
607 ioinst_handle_ssch(cpu
, r1
, inst
>> 16);
608 qemu_mutex_unlock_iothread();
611 void HELPER(stsch
)(CPUS390XState
*env
, uint64_t r1
, uint64_t inst
)
613 S390CPU
*cpu
= s390_env_get_cpu(env
);
614 qemu_mutex_lock_iothread();
615 ioinst_handle_stsch(cpu
, r1
, inst
>> 16);
616 qemu_mutex_unlock_iothread();
619 void HELPER(tsch
)(CPUS390XState
*env
, uint64_t r1
, uint64_t inst
)
621 S390CPU
*cpu
= s390_env_get_cpu(env
);
622 qemu_mutex_lock_iothread();
623 ioinst_handle_tsch(cpu
, r1
, inst
>> 16);
624 qemu_mutex_unlock_iothread();
627 void HELPER(chsc
)(CPUS390XState
*env
, uint64_t inst
)
629 S390CPU
*cpu
= s390_env_get_cpu(env
);
630 qemu_mutex_lock_iothread();
631 ioinst_handle_chsc(cpu
, inst
>> 16);
632 qemu_mutex_unlock_iothread();
636 #ifndef CONFIG_USER_ONLY
637 void HELPER(per_check_exception
)(CPUS390XState
*env
)
639 CPUState
*cs
= CPU(s390_env_get_cpu(env
));
641 if (env
->per_perc_atmid
) {
642 env
->int_pgm_code
= PGM_PER
;
643 env
->int_pgm_ilen
= get_ilen(cpu_ldub_code(env
, env
->per_address
));
645 cs
->exception_index
= EXCP_PGM
;
650 void HELPER(per_branch
)(CPUS390XState
*env
, uint64_t from
, uint64_t to
)
652 if ((env
->cregs
[9] & PER_CR9_EVENT_BRANCH
)) {
653 if (!(env
->cregs
[9] & PER_CR9_CONTROL_BRANCH_ADDRESS
)
654 || get_per_in_range(env
, to
)) {
655 env
->per_address
= from
;
656 env
->per_perc_atmid
= PER_CODE_EVENT_BRANCH
| get_per_atmid(env
);
661 void HELPER(per_ifetch
)(CPUS390XState
*env
, uint64_t addr
)
663 if ((env
->cregs
[9] & PER_CR9_EVENT_IFETCH
) && get_per_in_range(env
, addr
)) {
664 env
->per_address
= addr
;
665 env
->per_perc_atmid
= PER_CODE_EVENT_IFETCH
| get_per_atmid(env
);
667 /* If the instruction has to be nullified, trigger the
668 exception immediately. */
669 if (env
->cregs
[9] & PER_CR9_EVENT_NULLIFICATION
) {
670 CPUState
*cs
= CPU(s390_env_get_cpu(env
));
672 env
->int_pgm_code
= PGM_PER
;
673 env
->int_pgm_ilen
= get_ilen(cpu_ldub_code(env
, addr
));
675 cs
->exception_index
= EXCP_PGM
;