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"
26 #include "sysemu/kvm.h"
27 #include "qemu/timer.h"
29 #include <linux/kvm.h>
32 #if !defined(CONFIG_USER_ONLY)
33 #include "exec/softmmu_exec.h"
34 #include "sysemu/sysemu.h"
37 /* #define DEBUG_HELPER */
39 #define HELPER_LOG(x...) qemu_log(x)
41 #define HELPER_LOG(x...)
44 /* Raise an exception dynamically from a helper function. */
45 void QEMU_NORETURN
runtime_exception(CPUS390XState
*env
, int excp
,
50 env
->exception_index
= EXCP_PGM
;
51 env
->int_pgm_code
= excp
;
53 /* Use the (ultimate) callers address to find the insn that trapped. */
54 cpu_restore_state(env
, retaddr
);
56 /* Advance past the insn. */
57 t
= cpu_ldub_code(env
, env
->psw
.addr
);
58 env
->int_pgm_ilen
= t
= get_ilen(t
);
59 env
->psw
.addr
+= 2 * t
;
64 /* Raise an exception statically from a TB. */
65 void HELPER(exception
)(CPUS390XState
*env
, uint32_t excp
)
67 HELPER_LOG("%s: exception %d\n", __func__
, excp
);
68 env
->exception_index
= excp
;
72 #ifndef CONFIG_USER_ONLY
73 void program_interrupt(CPUS390XState
*env
, uint32_t code
, int ilen
)
75 qemu_log_mask(CPU_LOG_INT
, "program interrupt at %#" PRIx64
"\n",
80 kvm_s390_interrupt(s390_env_get_cpu(env
), KVM_S390_PROGRAM_INT
, code
);
83 env
->int_pgm_code
= code
;
84 env
->int_pgm_ilen
= ilen
;
85 env
->exception_index
= EXCP_PGM
;
90 /* SCLP service call */
91 uint32_t HELPER(servc
)(CPUS390XState
*env
, uint64_t r1
, uint64_t r2
)
93 int r
= sclp_service_call(r1
, r2
);
95 program_interrupt(env
, -r
, 4);
102 uint64_t HELPER(diag
)(CPUS390XState
*env
, uint32_t num
, uint64_t mem
,
110 r
= s390_virtio_hypercall(env
, mem
, code
);
126 program_interrupt(env
, PGM_OPERATION
, ILEN_LATER_INC
);
133 void HELPER(spx
)(CPUS390XState
*env
, uint64_t a1
)
135 uint32_t prefix
= a1
& 0x7fffe000;
137 qemu_log("prefix: %#x\n", prefix
);
138 tlb_flush_page(env
, 0);
139 tlb_flush_page(env
, TARGET_PAGE_SIZE
);
142 static inline uint64_t clock_value(CPUS390XState
*env
)
146 time
= env
->tod_offset
+
147 time2tod(qemu_get_clock_ns(vm_clock
) - env
->tod_basetime
);
153 uint64_t HELPER(stck
)(CPUS390XState
*env
)
155 return clock_value(env
);
158 /* Set Clock Comparator */
159 void HELPER(sckc
)(CPUS390XState
*env
, uint64_t time
)
165 /* difference between now and then */
166 time
-= clock_value(env
);
168 time
= (time
* 125) >> 9;
170 qemu_mod_timer(env
->tod_timer
, qemu_get_clock_ns(vm_clock
) + time
);
173 /* Store Clock Comparator */
174 uint64_t HELPER(stckc
)(CPUS390XState
*env
)
181 void HELPER(spt
)(CPUS390XState
*env
, uint64_t time
)
188 time
= (time
* 125) >> 9;
190 qemu_mod_timer(env
->cpu_timer
, qemu_get_clock_ns(vm_clock
) + time
);
193 /* Store CPU Timer */
194 uint64_t HELPER(stpt
)(CPUS390XState
*env
)
200 /* Store System Information */
201 uint32_t HELPER(stsi
)(CPUS390XState
*env
, uint64_t a0
,
202 uint64_t r0
, uint64_t r1
)
207 if ((r0
& STSI_LEVEL_MASK
) <= STSI_LEVEL_3
&&
208 ((r0
& STSI_R0_RESERVED_MASK
) || (r1
& STSI_R1_RESERVED_MASK
))) {
209 /* valid function code, invalid reserved bits */
210 program_interrupt(env
, PGM_SPECIFICATION
, 2);
213 sel1
= r0
& STSI_R0_SEL1_MASK
;
214 sel2
= r1
& STSI_R1_SEL2_MASK
;
216 /* XXX: spec exception if sysib is not 4k-aligned */
218 switch (r0
& STSI_LEVEL_MASK
) {
220 if ((sel1
== 1) && (sel2
== 1)) {
221 /* Basic Machine Configuration */
222 struct sysib_111 sysib
;
224 memset(&sysib
, 0, sizeof(sysib
));
225 ebcdic_put(sysib
.manuf
, "QEMU ", 16);
226 /* same as machine type number in STORE CPU ID */
227 ebcdic_put(sysib
.type
, "QEMU", 4);
228 /* same as model number in STORE CPU ID */
229 ebcdic_put(sysib
.model
, "QEMU ", 16);
230 ebcdic_put(sysib
.sequence
, "QEMU ", 16);
231 ebcdic_put(sysib
.plant
, "QEMU", 4);
232 cpu_physical_memory_rw(a0
, (uint8_t *)&sysib
, sizeof(sysib
), 1);
233 } else if ((sel1
== 2) && (sel2
== 1)) {
234 /* Basic Machine CPU */
235 struct sysib_121 sysib
;
237 memset(&sysib
, 0, sizeof(sysib
));
238 /* XXX make different for different CPUs? */
239 ebcdic_put(sysib
.sequence
, "QEMUQEMUQEMUQEMU", 16);
240 ebcdic_put(sysib
.plant
, "QEMU", 4);
241 stw_p(&sysib
.cpu_addr
, env
->cpu_num
);
242 cpu_physical_memory_rw(a0
, (uint8_t *)&sysib
, sizeof(sysib
), 1);
243 } else if ((sel1
== 2) && (sel2
== 2)) {
244 /* Basic Machine CPUs */
245 struct sysib_122 sysib
;
247 memset(&sysib
, 0, sizeof(sysib
));
248 stl_p(&sysib
.capability
, 0x443afc29);
249 /* XXX change when SMP comes */
250 stw_p(&sysib
.total_cpus
, 1);
251 stw_p(&sysib
.active_cpus
, 1);
252 stw_p(&sysib
.standby_cpus
, 0);
253 stw_p(&sysib
.reserved_cpus
, 0);
254 cpu_physical_memory_rw(a0
, (uint8_t *)&sysib
, sizeof(sysib
), 1);
261 if ((sel1
== 2) && (sel2
== 1)) {
263 struct sysib_221 sysib
;
265 memset(&sysib
, 0, sizeof(sysib
));
266 /* XXX make different for different CPUs? */
267 ebcdic_put(sysib
.sequence
, "QEMUQEMUQEMUQEMU", 16);
268 ebcdic_put(sysib
.plant
, "QEMU", 4);
269 stw_p(&sysib
.cpu_addr
, env
->cpu_num
);
270 stw_p(&sysib
.cpu_id
, 0);
271 cpu_physical_memory_rw(a0
, (uint8_t *)&sysib
, sizeof(sysib
), 1);
272 } else if ((sel1
== 2) && (sel2
== 2)) {
274 struct sysib_222 sysib
;
276 memset(&sysib
, 0, sizeof(sysib
));
277 stw_p(&sysib
.lpar_num
, 0);
279 /* XXX change when SMP comes */
280 stw_p(&sysib
.total_cpus
, 1);
281 stw_p(&sysib
.conf_cpus
, 1);
282 stw_p(&sysib
.standby_cpus
, 0);
283 stw_p(&sysib
.reserved_cpus
, 0);
284 ebcdic_put(sysib
.name
, "QEMU ", 8);
285 stl_p(&sysib
.caf
, 1000);
286 stw_p(&sysib
.dedicated_cpus
, 0);
287 stw_p(&sysib
.shared_cpus
, 0);
288 cpu_physical_memory_rw(a0
, (uint8_t *)&sysib
, sizeof(sysib
), 1);
296 if ((sel1
== 2) && (sel2
== 2)) {
298 struct sysib_322 sysib
;
300 memset(&sysib
, 0, sizeof(sysib
));
302 /* XXX change when SMP comes */
303 stw_p(&sysib
.vm
[0].total_cpus
, 1);
304 stw_p(&sysib
.vm
[0].conf_cpus
, 1);
305 stw_p(&sysib
.vm
[0].standby_cpus
, 0);
306 stw_p(&sysib
.vm
[0].reserved_cpus
, 0);
307 ebcdic_put(sysib
.vm
[0].name
, "KVMguest", 8);
308 stl_p(&sysib
.vm
[0].caf
, 1000);
309 ebcdic_put(sysib
.vm
[0].cpi
, "KVM/Linux ", 16);
310 cpu_physical_memory_rw(a0
, (uint8_t *)&sysib
, sizeof(sysib
), 1);
316 case STSI_LEVEL_CURRENT
:
317 env
->regs
[0] = STSI_LEVEL_3
;
327 uint32_t HELPER(sigp
)(CPUS390XState
*env
, uint64_t order_code
, uint32_t r1
,
332 HELPER_LOG("%s: %016" PRIx64
" %08x %016" PRIx64
"\n",
333 __func__
, order_code
, r1
, cpu_addr
);
335 /* Remember: Use "R1 or R1 + 1, whichever is the odd-numbered register"
336 as parameter (input). Status (output) is always R1. */
338 switch (order_code
) {
343 /* enumerate CPU status */
345 /* XXX implement when SMP comes */
348 env
->regs
[r1
] &= 0xffffffff00000000ULL
;
351 #if !defined(CONFIG_USER_ONLY)
353 qemu_system_reset_request();
357 qemu_system_shutdown_request();
363 fprintf(stderr
, "XXX unknown sigp: 0x%" PRIx64
"\n", order_code
);