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/>.
22 #include "exec/memory.h"
23 #include "qemu/host-utils.h"
24 #include "exec/helper-proto.h"
26 #include "sysemu/kvm.h"
27 #include "qemu/timer.h"
28 #include "exec/address-spaces.h"
30 #include <linux/kvm.h>
32 #include "exec/cpu_ldst.h"
34 #if !defined(CONFIG_USER_ONLY)
35 #include "sysemu/cpus.h"
36 #include "sysemu/sysemu.h"
37 #include "hw/s390x/ebcdic.h"
38 #include "hw/s390x/ipl.h"
41 /* #define DEBUG_HELPER */
43 #define HELPER_LOG(x...) qemu_log(x)
45 #define HELPER_LOG(x...)
48 /* Raise an exception dynamically from a helper function. */
49 void QEMU_NORETURN
runtime_exception(CPUS390XState
*env
, int excp
,
52 CPUState
*cs
= CPU(s390_env_get_cpu(env
));
55 cs
->exception_index
= EXCP_PGM
;
56 env
->int_pgm_code
= excp
;
58 /* Use the (ultimate) callers address to find the insn that trapped. */
59 cpu_restore_state(cs
, retaddr
);
61 /* Advance past the insn. */
62 t
= cpu_ldub_code(env
, env
->psw
.addr
);
63 env
->int_pgm_ilen
= t
= get_ilen(t
);
69 /* Raise an exception statically from a TB. */
70 void HELPER(exception
)(CPUS390XState
*env
, uint32_t excp
)
72 CPUState
*cs
= CPU(s390_env_get_cpu(env
));
74 HELPER_LOG("%s: exception %d\n", __func__
, excp
);
75 cs
->exception_index
= excp
;
79 #ifndef CONFIG_USER_ONLY
81 void program_interrupt(CPUS390XState
*env
, uint32_t code
, int ilen
)
83 S390CPU
*cpu
= s390_env_get_cpu(env
);
85 qemu_log_mask(CPU_LOG_INT
, "program interrupt at %#" PRIx64
"\n",
90 struct kvm_s390_irq irq
= {
91 .type
= KVM_S390_PROGRAM_INT
,
95 kvm_s390_vcpu_interrupt(cpu
, &irq
);
98 CPUState
*cs
= CPU(cpu
);
100 env
->int_pgm_code
= code
;
101 env
->int_pgm_ilen
= ilen
;
102 cs
->exception_index
= EXCP_PGM
;
107 /* SCLP service call */
108 uint32_t HELPER(servc
)(CPUS390XState
*env
, uint64_t r1
, uint64_t r2
)
110 int r
= sclp_service_call(env
, r1
, r2
);
112 program_interrupt(env
, -r
, 4);
118 #ifndef CONFIG_USER_ONLY
119 static int modified_clear_reset(S390CPU
*cpu
)
121 S390CPUClass
*scc
= S390_CPU_GET_CLASS(cpu
);
125 cpu_synchronize_all_states();
127 run_on_cpu(t
, s390_do_cpu_full_reset
, t
);
130 io_subsystem_reset();
131 scc
->load_normal(CPU(cpu
));
132 cpu_synchronize_all_post_reset();
137 static int load_normal_reset(S390CPU
*cpu
)
139 S390CPUClass
*scc
= S390_CPU_GET_CLASS(cpu
);
143 cpu_synchronize_all_states();
145 run_on_cpu(t
, s390_do_cpu_reset
, t
);
148 io_subsystem_reset();
149 scc
->initial_cpu_reset(CPU(cpu
));
150 scc
->load_normal(CPU(cpu
));
151 cpu_synchronize_all_post_reset();
156 #define DIAG_308_RC_OK 0x0001
157 #define DIAG_308_RC_NO_CONF 0x0102
158 #define DIAG_308_RC_INVALID 0x0402
160 void handle_diag_308(CPUS390XState
*env
, uint64_t r1
, uint64_t r3
)
162 uint64_t addr
= env
->regs
[r1
];
163 uint64_t subcode
= env
->regs
[r3
];
164 IplParameterBlock
*iplb
;
166 if (env
->psw
.mask
& PSW_MASK_PSTATE
) {
167 program_interrupt(env
, PGM_PRIVILEGED
, ILEN_LATER_INC
);
171 if ((subcode
& ~0x0ffffULL
) || (subcode
> 6)) {
172 program_interrupt(env
, PGM_SPECIFICATION
, ILEN_LATER_INC
);
178 modified_clear_reset(s390_env_get_cpu(env
));
181 load_normal_reset(s390_env_get_cpu(env
));
184 if ((r1
& 1) || (addr
& 0x0fffULL
)) {
185 program_interrupt(env
, PGM_SPECIFICATION
, ILEN_LATER_INC
);
188 if (!address_space_access_valid(&address_space_memory
, addr
,
189 sizeof(IplParameterBlock
), false)) {
190 program_interrupt(env
, PGM_ADDRESSING
, ILEN_LATER_INC
);
193 iplb
= g_malloc0(sizeof(struct IplParameterBlock
));
194 cpu_physical_memory_read(addr
, iplb
, sizeof(struct IplParameterBlock
));
195 if (!s390_ipl_update_diag308(iplb
)) {
196 env
->regs
[r1
+ 1] = DIAG_308_RC_OK
;
198 env
->regs
[r1
+ 1] = DIAG_308_RC_INVALID
;
203 if ((r1
& 1) || (addr
& 0x0fffULL
)) {
204 program_interrupt(env
, PGM_SPECIFICATION
, ILEN_LATER_INC
);
207 if (!address_space_access_valid(&address_space_memory
, addr
,
208 sizeof(IplParameterBlock
), true)) {
209 program_interrupt(env
, PGM_ADDRESSING
, ILEN_LATER_INC
);
212 iplb
= s390_ipl_get_iplb();
214 cpu_physical_memory_write(addr
, iplb
,
215 sizeof(struct IplParameterBlock
));
216 env
->regs
[r1
+ 1] = DIAG_308_RC_OK
;
218 env
->regs
[r1
+ 1] = DIAG_308_RC_NO_CONF
;
222 hw_error("Unhandled diag308 subcode %" PRIx64
, subcode
);
229 uint64_t HELPER(diag
)(CPUS390XState
*env
, uint32_t num
, uint64_t mem
,
237 r
= s390_virtio_hypercall(env
);
253 program_interrupt(env
, PGM_OPERATION
, ILEN_LATER_INC
);
260 void HELPER(spx
)(CPUS390XState
*env
, uint64_t a1
)
262 CPUState
*cs
= CPU(s390_env_get_cpu(env
));
263 uint32_t prefix
= a1
& 0x7fffe000;
266 qemu_log("prefix: %#x\n", prefix
);
267 tlb_flush_page(cs
, 0);
268 tlb_flush_page(cs
, TARGET_PAGE_SIZE
);
272 uint64_t HELPER(stck
)(CPUS390XState
*env
)
276 time
= env
->tod_offset
+
277 time2tod(qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) - env
->tod_basetime
);
282 /* Set Clock Comparator */
283 void HELPER(sckc
)(CPUS390XState
*env
, uint64_t time
)
291 /* difference between origins */
292 time
-= env
->tod_offset
;
295 time
= tod2time(time
);
297 timer_mod(env
->tod_timer
, env
->tod_basetime
+ time
);
300 /* Store Clock Comparator */
301 uint64_t HELPER(stckc
)(CPUS390XState
*env
)
307 void HELPER(spt
)(CPUS390XState
*env
, uint64_t time
)
314 time
= tod2time(time
);
316 env
->cputm
= qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
) + time
;
318 timer_mod(env
->cpu_timer
, env
->cputm
);
321 /* Store CPU Timer */
322 uint64_t HELPER(stpt
)(CPUS390XState
*env
)
324 return time2tod(env
->cputm
- qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL
));
327 /* Store System Information */
328 uint32_t HELPER(stsi
)(CPUS390XState
*env
, uint64_t a0
,
329 uint64_t r0
, uint64_t r1
)
334 if ((r0
& STSI_LEVEL_MASK
) <= STSI_LEVEL_3
&&
335 ((r0
& STSI_R0_RESERVED_MASK
) || (r1
& STSI_R1_RESERVED_MASK
))) {
336 /* valid function code, invalid reserved bits */
337 program_interrupt(env
, PGM_SPECIFICATION
, 2);
340 sel1
= r0
& STSI_R0_SEL1_MASK
;
341 sel2
= r1
& STSI_R1_SEL2_MASK
;
343 /* XXX: spec exception if sysib is not 4k-aligned */
345 switch (r0
& STSI_LEVEL_MASK
) {
347 if ((sel1
== 1) && (sel2
== 1)) {
348 /* Basic Machine Configuration */
349 struct sysib_111 sysib
;
351 memset(&sysib
, 0, sizeof(sysib
));
352 ebcdic_put(sysib
.manuf
, "QEMU ", 16);
353 /* same as machine type number in STORE CPU ID */
354 ebcdic_put(sysib
.type
, "QEMU", 4);
355 /* same as model number in STORE CPU ID */
356 ebcdic_put(sysib
.model
, "QEMU ", 16);
357 ebcdic_put(sysib
.sequence
, "QEMU ", 16);
358 ebcdic_put(sysib
.plant
, "QEMU", 4);
359 cpu_physical_memory_write(a0
, &sysib
, sizeof(sysib
));
360 } else if ((sel1
== 2) && (sel2
== 1)) {
361 /* Basic Machine CPU */
362 struct sysib_121 sysib
;
364 memset(&sysib
, 0, sizeof(sysib
));
365 /* XXX make different for different CPUs? */
366 ebcdic_put(sysib
.sequence
, "QEMUQEMUQEMUQEMU", 16);
367 ebcdic_put(sysib
.plant
, "QEMU", 4);
368 stw_p(&sysib
.cpu_addr
, env
->cpu_num
);
369 cpu_physical_memory_write(a0
, &sysib
, sizeof(sysib
));
370 } else if ((sel1
== 2) && (sel2
== 2)) {
371 /* Basic Machine CPUs */
372 struct sysib_122 sysib
;
374 memset(&sysib
, 0, sizeof(sysib
));
375 stl_p(&sysib
.capability
, 0x443afc29);
376 /* XXX change when SMP comes */
377 stw_p(&sysib
.total_cpus
, 1);
378 stw_p(&sysib
.active_cpus
, 1);
379 stw_p(&sysib
.standby_cpus
, 0);
380 stw_p(&sysib
.reserved_cpus
, 0);
381 cpu_physical_memory_write(a0
, &sysib
, sizeof(sysib
));
388 if ((sel1
== 2) && (sel2
== 1)) {
390 struct sysib_221 sysib
;
392 memset(&sysib
, 0, sizeof(sysib
));
393 /* XXX make different for different CPUs? */
394 ebcdic_put(sysib
.sequence
, "QEMUQEMUQEMUQEMU", 16);
395 ebcdic_put(sysib
.plant
, "QEMU", 4);
396 stw_p(&sysib
.cpu_addr
, env
->cpu_num
);
397 stw_p(&sysib
.cpu_id
, 0);
398 cpu_physical_memory_write(a0
, &sysib
, sizeof(sysib
));
399 } else if ((sel1
== 2) && (sel2
== 2)) {
401 struct sysib_222 sysib
;
403 memset(&sysib
, 0, sizeof(sysib
));
404 stw_p(&sysib
.lpar_num
, 0);
406 /* XXX change when SMP comes */
407 stw_p(&sysib
.total_cpus
, 1);
408 stw_p(&sysib
.conf_cpus
, 1);
409 stw_p(&sysib
.standby_cpus
, 0);
410 stw_p(&sysib
.reserved_cpus
, 0);
411 ebcdic_put(sysib
.name
, "QEMU ", 8);
412 stl_p(&sysib
.caf
, 1000);
413 stw_p(&sysib
.dedicated_cpus
, 0);
414 stw_p(&sysib
.shared_cpus
, 0);
415 cpu_physical_memory_write(a0
, &sysib
, sizeof(sysib
));
423 if ((sel1
== 2) && (sel2
== 2)) {
425 struct sysib_322 sysib
;
427 memset(&sysib
, 0, sizeof(sysib
));
429 /* XXX change when SMP comes */
430 stw_p(&sysib
.vm
[0].total_cpus
, 1);
431 stw_p(&sysib
.vm
[0].conf_cpus
, 1);
432 stw_p(&sysib
.vm
[0].standby_cpus
, 0);
433 stw_p(&sysib
.vm
[0].reserved_cpus
, 0);
434 ebcdic_put(sysib
.vm
[0].name
, "KVMguest", 8);
435 stl_p(&sysib
.vm
[0].caf
, 1000);
436 ebcdic_put(sysib
.vm
[0].cpi
, "KVM/Linux ", 16);
437 cpu_physical_memory_write(a0
, &sysib
, sizeof(sysib
));
443 case STSI_LEVEL_CURRENT
:
444 env
->regs
[0] = STSI_LEVEL_3
;
454 uint32_t HELPER(sigp
)(CPUS390XState
*env
, uint64_t order_code
, uint32_t r1
,
457 int cc
= SIGP_CC_ORDER_CODE_ACCEPTED
;
459 HELPER_LOG("%s: %016" PRIx64
" %08x %016" PRIx64
"\n",
460 __func__
, order_code
, r1
, cpu_addr
);
462 /* Remember: Use "R1 or R1 + 1, whichever is the odd-numbered register"
463 as parameter (input). Status (output) is always R1. */
465 switch (order_code
) {
470 /* enumerate CPU status */
472 /* XXX implement when SMP comes */
475 env
->regs
[r1
] &= 0xffffffff00000000ULL
;
478 #if !defined(CONFIG_USER_ONLY)
480 qemu_system_reset_request();
481 cpu_loop_exit(CPU(s390_env_get_cpu(env
)));
484 qemu_system_shutdown_request();
485 cpu_loop_exit(CPU(s390_env_get_cpu(env
)));
490 fprintf(stderr
, "XXX unknown sigp: 0x%" PRIx64
"\n", order_code
);
491 cc
= SIGP_CC_NOT_OPERATIONAL
;