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 r = s390_virtio_hypercall(env);
299 handle_diag_308(env, r1, r3);
308 program_interrupt(env, PGM_OPERATION, ILEN_LATER_INC);
313 void HELPER(spx)(CPUS390XState *env, uint64_t a1)
315 CPUState *cs = CPU(s390_env_get_cpu(env));
316 uint32_t prefix = a1 & 0x7fffe000;
319 HELPER_LOG("prefix: %#x\n", prefix);
320 tlb_flush_page(cs, 0);
321 tlb_flush_page(cs, TARGET_PAGE_SIZE);
325 uint64_t HELPER(stck)(CPUS390XState *env)
329 time = env->tod_offset +
330 time2tod(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) - env->tod_basetime);
335 /* Set Clock Comparator */
336 void HELPER(sckc)(CPUS390XState *env, uint64_t time)
344 /* difference between origins */
345 time -= env->tod_offset;
348 time = tod2time(time);
350 timer_mod(env->tod_timer, env->tod_basetime + time);
353 /* Store Clock Comparator */
354 uint64_t HELPER(stckc)(CPUS390XState *env)
360 void HELPER(spt)(CPUS390XState *env, uint64_t time)
367 time = tod2time(time);
369 env->cputm = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) + time;
371 timer_mod(env->cpu_timer, env->cputm);
374 /* Store CPU Timer */
375 uint64_t HELPER(stpt)(CPUS390XState *env)
377 return time2tod(env->cputm - qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL));
380 /* Store System Information */
381 uint32_t HELPER(stsi)(CPUS390XState *env, uint64_t a0,
382 uint64_t r0, uint64_t r1)
387 if ((r0 & STSI_LEVEL_MASK) <= STSI_LEVEL_3 &&
388 ((r0 & STSI_R0_RESERVED_MASK) || (r1 & STSI_R1_RESERVED_MASK))) {
389 /* valid function code, invalid reserved bits */
390 program_interrupt(env, PGM_SPECIFICATION, 2);
393 sel1 = r0 & STSI_R0_SEL1_MASK;
394 sel2 = r1 & STSI_R1_SEL2_MASK;
396 /* XXX: spec exception if sysib is not 4k-aligned */
398 switch (r0 & STSI_LEVEL_MASK) {
400 if ((sel1 == 1) && (sel2 == 1)) {
401 /* Basic Machine Configuration */
402 struct sysib_111 sysib;
404 memset(&sysib, 0, sizeof(sysib));
405 ebcdic_put(sysib.manuf, "QEMU ", 16);
406 /* same as machine type number in STORE CPU ID */
407 ebcdic_put(sysib.type, "QEMU", 4);
408 /* same as model number in STORE CPU ID */
409 ebcdic_put(sysib.model, "QEMU ", 16);
410 ebcdic_put(sysib.sequence, "QEMU ", 16);
411 ebcdic_put(sysib.plant, "QEMU", 4);
412 cpu_physical_memory_write(a0, &sysib, sizeof(sysib));
413 } else if ((sel1 == 2) && (sel2 == 1)) {
414 /* Basic Machine CPU */
415 struct sysib_121 sysib;
417 memset(&sysib, 0, sizeof(sysib));
418 /* XXX make different for different CPUs? */
419 ebcdic_put(sysib.sequence, "QEMUQEMUQEMUQEMU", 16);
420 ebcdic_put(sysib.plant, "QEMU", 4);
421 stw_p(&sysib.cpu_addr, env->cpu_num);
422 cpu_physical_memory_write(a0, &sysib, sizeof(sysib));
423 } else if ((sel1 == 2) && (sel2 == 2)) {
424 /* Basic Machine CPUs */
425 struct sysib_122 sysib;
427 memset(&sysib, 0, sizeof(sysib));
428 stl_p(&sysib.capability, 0x443afc29);
429 /* XXX change when SMP comes */
430 stw_p(&sysib.total_cpus, 1);
431 stw_p(&sysib.active_cpus, 1);
432 stw_p(&sysib.standby_cpus, 0);
433 stw_p(&sysib.reserved_cpus, 0);
434 cpu_physical_memory_write(a0, &sysib, sizeof(sysib));
441 if ((sel1 == 2) && (sel2 == 1)) {
443 struct sysib_221 sysib;
445 memset(&sysib, 0, sizeof(sysib));
446 /* XXX make different for different CPUs? */
447 ebcdic_put(sysib.sequence, "QEMUQEMUQEMUQEMU", 16);
448 ebcdic_put(sysib.plant, "QEMU", 4);
449 stw_p(&sysib.cpu_addr, env->cpu_num);
450 stw_p(&sysib.cpu_id, 0);
451 cpu_physical_memory_write(a0, &sysib, sizeof(sysib));
452 } else if ((sel1 == 2) && (sel2 == 2)) {
454 struct sysib_222 sysib;
456 memset(&sysib, 0, sizeof(sysib));
457 stw_p(&sysib.lpar_num, 0);
459 /* XXX change when SMP comes */
460 stw_p(&sysib.total_cpus, 1);
461 stw_p(&sysib.conf_cpus, 1);
462 stw_p(&sysib.standby_cpus, 0);
463 stw_p(&sysib.reserved_cpus, 0);
464 ebcdic_put(sysib.name, "QEMU ", 8);
465 stl_p(&sysib.caf, 1000);
466 stw_p(&sysib.dedicated_cpus, 0);
467 stw_p(&sysib.shared_cpus, 0);
468 cpu_physical_memory_write(a0, &sysib, sizeof(sysib));
476 if ((sel1 == 2) && (sel2 == 2)) {
478 struct sysib_322 sysib;
480 memset(&sysib, 0, sizeof(sysib));
482 /* XXX change when SMP comes */
483 stw_p(&sysib.vm[0].total_cpus, 1);
484 stw_p(&sysib.vm[0].conf_cpus, 1);
485 stw_p(&sysib.vm[0].standby_cpus, 0);
486 stw_p(&sysib.vm[0].reserved_cpus, 0);
487 ebcdic_put(sysib.vm[0].name, "KVMguest", 8);
488 stl_p(&sysib.vm[0].caf, 1000);
489 ebcdic_put(sysib.vm[0].cpi, "KVM/Linux ", 16);
490 cpu_physical_memory_write(a0, &sysib, sizeof(sysib));
496 case STSI_LEVEL_CURRENT:
497 env->regs[0] = STSI_LEVEL_3;
507 uint32_t HELPER(sigp)(CPUS390XState *env, uint64_t order_code, uint32_t r1,
510 int cc = SIGP_CC_ORDER_CODE_ACCEPTED;
512 HELPER_LOG("%s: %016" PRIx64 " %08x %016" PRIx64 "\n",
513 __func__, order_code, r1, cpu_addr);
515 /* Remember: Use "R1 or R1 + 1, whichever is the odd-numbered register"
516 as parameter (input). Status (output) is always R1. */
518 switch (order_code) {
523 /* enumerate CPU status */
525 /* XXX implement when SMP comes */
528 env->regs[r1] &= 0xffffffff00000000ULL;
531 #if !defined(CONFIG_USER_ONLY)
533 qemu_system_reset_request();
534 cpu_loop_exit(CPU(s390_env_get_cpu(env)));
537 qemu_system_shutdown_request();
538 cpu_loop_exit(CPU(s390_env_get_cpu(env)));
543 fprintf(stderr, "XXX unknown sigp: 0x%" PRIx64 "\n", order_code);
544 cc = SIGP_CC_NOT_OPERATIONAL;
551 #ifndef CONFIG_USER_ONLY
552 void HELPER(xsch)(CPUS390XState *env, uint64_t r1)
554 S390CPU *cpu = s390_env_get_cpu(env);
555 qemu_mutex_lock_iothread();
556 ioinst_handle_xsch(cpu, r1);
557 qemu_mutex_unlock_iothread();
560 void HELPER(csch)(CPUS390XState *env, uint64_t r1)
562 S390CPU *cpu = s390_env_get_cpu(env);
563 qemu_mutex_lock_iothread();
564 ioinst_handle_csch(cpu, r1);
565 qemu_mutex_unlock_iothread();
568 void HELPER(hsch)(CPUS390XState *env, uint64_t r1)
570 S390CPU *cpu = s390_env_get_cpu(env);
571 qemu_mutex_lock_iothread();
572 ioinst_handle_hsch(cpu, r1);
573 qemu_mutex_unlock_iothread();
576 void HELPER(msch)(CPUS390XState *env, uint64_t r1, uint64_t inst)
578 S390CPU *cpu = s390_env_get_cpu(env);
579 qemu_mutex_lock_iothread();
580 ioinst_handle_msch(cpu, r1, inst >> 16);
581 qemu_mutex_unlock_iothread();
584 void HELPER(rchp)(CPUS390XState *env, uint64_t r1)
586 S390CPU *cpu = s390_env_get_cpu(env);
587 qemu_mutex_lock_iothread();
588 ioinst_handle_rchp(cpu, r1);
589 qemu_mutex_unlock_iothread();
592 void HELPER(rsch)(CPUS390XState *env, uint64_t r1)
594 S390CPU *cpu = s390_env_get_cpu(env);
595 qemu_mutex_lock_iothread();
596 ioinst_handle_rsch(cpu, r1);
597 qemu_mutex_unlock_iothread();
600 void HELPER(ssch)(CPUS390XState *env, uint64_t r1, uint64_t inst)
602 S390CPU *cpu = s390_env_get_cpu(env);
603 qemu_mutex_lock_iothread();
604 ioinst_handle_ssch(cpu, r1, inst >> 16);
605 qemu_mutex_unlock_iothread();
608 void HELPER(stsch)(CPUS390XState *env, uint64_t r1, uint64_t inst)
610 S390CPU *cpu = s390_env_get_cpu(env);
611 qemu_mutex_lock_iothread();
612 ioinst_handle_stsch(cpu, r1, inst >> 16);
613 qemu_mutex_unlock_iothread();
616 void HELPER(tsch)(CPUS390XState *env, uint64_t r1, uint64_t inst)
618 S390CPU *cpu = s390_env_get_cpu(env);
619 qemu_mutex_lock_iothread();
620 ioinst_handle_tsch(cpu, r1, inst >> 16);
621 qemu_mutex_unlock_iothread();
624 void HELPER(chsc)(CPUS390XState *env, uint64_t inst)
626 S390CPU *cpu = s390_env_get_cpu(env);
627 qemu_mutex_lock_iothread();
628 ioinst_handle_chsc(cpu, inst >> 16);
629 qemu_mutex_unlock_iothread();
633 #ifndef CONFIG_USER_ONLY
634 void HELPER(per_check_exception)(CPUS390XState *env)
636 CPUState *cs = CPU(s390_env_get_cpu(env));
638 if (env->per_perc_atmid) {
639 env->int_pgm_code = PGM_PER;
640 env->int_pgm_ilen = get_ilen(cpu_ldub_code(env, env->per_address));
642 cs->exception_index = EXCP_PGM;
647 void HELPER(per_branch)(CPUS390XState *env, uint64_t from, uint64_t to)
649 if ((env->cregs[9] & PER_CR9_EVENT_BRANCH)) {
650 if (!(env->cregs[9] & PER_CR9_CONTROL_BRANCH_ADDRESS)
651 || get_per_in_range(env, to)) {
652 env->per_address = from;
653 env->per_perc_atmid = PER_CODE_EVENT_BRANCH | get_per_atmid(env);
658 void HELPER(per_ifetch)(CPUS390XState *env, uint64_t addr)
660 if ((env->cregs[9] & PER_CR9_EVENT_IFETCH) && get_per_in_range(env, addr)) {
661 env->per_address = addr;
662 env->per_perc_atmid = PER_CODE_EVENT_IFETCH | get_per_atmid(env);
664 /* If the instruction has to be nullified, trigger the
665 exception immediately. */
666 if (env->cregs[9] & PER_CR9_EVENT_NULLIFICATION) {
667 CPUState *cs = CPU(s390_env_get_cpu(env));
669 env->int_pgm_code = PGM_PER;
670 env->int_pgm_ilen = get_ilen(cpu_ldub_code(env, addr));
672 cs->exception_index = EXCP_PGM;