]>
Commit | Line | Data |
---|---|---|
0e60a699 AG |
1 | /* |
2 | * QEMU S390x KVM implementation | |
3 | * | |
4 | * Copyright (c) 2009 Alexander Graf <agraf@suse.de> | |
ccb084d3 | 5 | * Copyright IBM Corp. 2012 |
0e60a699 AG |
6 | * |
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. | |
11 | * | |
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. | |
16 | * | |
ccb084d3 CB |
17 | * Contributions after 2012-10-29 are licensed under the terms of the |
18 | * GNU GPL, version 2 or (at your option) any later version. | |
19 | * | |
20 | * You should have received a copy of the GNU (Lesser) General Public | |
0e60a699 AG |
21 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
22 | */ | |
23 | ||
24 | #include <sys/types.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" | |
1de7afc9 | 32 | #include "qemu/timer.h" |
9c17d615 PB |
33 | #include "sysemu/sysemu.h" |
34 | #include "sysemu/kvm.h" | |
0e60a699 | 35 | #include "cpu.h" |
9c17d615 | 36 | #include "sysemu/device_tree.h" |
0e60a699 AG |
37 | |
38 | /* #define DEBUG_KVM */ | |
39 | ||
40 | #ifdef DEBUG_KVM | |
41 | #define dprintf(fmt, ...) \ | |
42 | do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) | |
43 | #else | |
44 | #define dprintf(fmt, ...) \ | |
45 | do { } while (0) | |
46 | #endif | |
47 | ||
48 | #define IPA0_DIAG 0x8300 | |
49 | #define IPA0_SIGP 0xae00 | |
50 | #define IPA0_PRIV 0xb200 | |
51 | ||
52 | #define PRIV_SCLP_CALL 0x20 | |
53 | #define DIAG_KVM_HYPERCALL 0x500 | |
54 | #define DIAG_KVM_BREAKPOINT 0x501 | |
55 | ||
0e60a699 AG |
56 | #define ICPT_INSTRUCTION 0x04 |
57 | #define ICPT_WAITPSW 0x1c | |
58 | #define ICPT_SOFT_INTERCEPT 0x24 | |
59 | #define ICPT_CPU_STOP 0x28 | |
60 | #define ICPT_IO 0x40 | |
61 | ||
62 | #define SIGP_RESTART 0x06 | |
63 | #define SIGP_INITIAL_CPU_RESET 0x0b | |
64 | #define SIGP_STORE_STATUS_ADDR 0x0e | |
65 | #define SIGP_SET_ARCH 0x12 | |
66 | ||
94a8d39a JK |
67 | const KVMCapabilityInfo kvm_arch_required_capabilities[] = { |
68 | KVM_CAP_LAST_INFO | |
69 | }; | |
70 | ||
5b08b344 CB |
71 | static int cap_sync_regs; |
72 | ||
cad1e282 | 73 | int kvm_arch_init(KVMState *s) |
0e60a699 | 74 | { |
5b08b344 | 75 | cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS); |
0e60a699 AG |
76 | return 0; |
77 | } | |
78 | ||
20d695a9 | 79 | int kvm_arch_init_vcpu(CPUState *cpu) |
0e60a699 AG |
80 | { |
81 | int ret = 0; | |
82 | ||
1bc22652 | 83 | if (kvm_vcpu_ioctl(cpu, KVM_S390_INITIAL_RESET, NULL) < 0) { |
0e60a699 AG |
84 | perror("cannot init reset vcpu"); |
85 | } | |
86 | ||
87 | return ret; | |
88 | } | |
89 | ||
20d695a9 | 90 | void kvm_arch_reset_vcpu(CPUState *cpu) |
0e60a699 AG |
91 | { |
92 | /* FIXME: add code to reset vcpu. */ | |
93 | } | |
94 | ||
20d695a9 | 95 | int kvm_arch_put_registers(CPUState *cs, int level) |
0e60a699 | 96 | { |
20d695a9 AF |
97 | S390CPU *cpu = S390_CPU(cs); |
98 | CPUS390XState *env = &cpu->env; | |
5b08b344 | 99 | struct kvm_sregs sregs; |
0e60a699 AG |
100 | struct kvm_regs regs; |
101 | int ret; | |
102 | int i; | |
103 | ||
5b08b344 | 104 | /* always save the PSW and the GPRS*/ |
f7575c96 AF |
105 | cs->kvm_run->psw_addr = env->psw.addr; |
106 | cs->kvm_run->psw_mask = env->psw.mask; | |
0e60a699 | 107 | |
f7575c96 | 108 | if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_GPRS) { |
5b08b344 | 109 | for (i = 0; i < 16; i++) { |
f7575c96 AF |
110 | cs->kvm_run->s.regs.gprs[i] = env->regs[i]; |
111 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS; | |
5b08b344 CB |
112 | } |
113 | } else { | |
114 | for (i = 0; i < 16; i++) { | |
115 | regs.gprs[i] = env->regs[i]; | |
116 | } | |
1bc22652 | 117 | ret = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s); |
5b08b344 CB |
118 | if (ret < 0) { |
119 | return ret; | |
120 | } | |
0e60a699 AG |
121 | } |
122 | ||
5b08b344 CB |
123 | /* Do we need to save more than that? */ |
124 | if (level == KVM_PUT_RUNTIME_STATE) { | |
125 | return 0; | |
0e60a699 AG |
126 | } |
127 | ||
5b08b344 | 128 | if (cap_sync_regs && |
f7575c96 AF |
129 | cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS && |
130 | cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) { | |
5b08b344 | 131 | for (i = 0; i < 16; i++) { |
f7575c96 AF |
132 | cs->kvm_run->s.regs.acrs[i] = env->aregs[i]; |
133 | cs->kvm_run->s.regs.crs[i] = env->cregs[i]; | |
5b08b344 | 134 | } |
f7575c96 AF |
135 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS; |
136 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS; | |
5b08b344 CB |
137 | } else { |
138 | for (i = 0; i < 16; i++) { | |
139 | sregs.acrs[i] = env->aregs[i]; | |
140 | sregs.crs[i] = env->cregs[i]; | |
141 | } | |
1bc22652 | 142 | ret = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs); |
5b08b344 CB |
143 | if (ret < 0) { |
144 | return ret; | |
145 | } | |
146 | } | |
0e60a699 | 147 | |
5b08b344 | 148 | /* Finally the prefix */ |
f7575c96 AF |
149 | if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) { |
150 | cs->kvm_run->s.regs.prefix = env->psa; | |
151 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX; | |
5b08b344 CB |
152 | } else { |
153 | /* prefix is only supported via sync regs */ | |
154 | } | |
155 | return 0; | |
0e60a699 AG |
156 | } |
157 | ||
20d695a9 | 158 | int kvm_arch_get_registers(CPUState *cs) |
0e60a699 | 159 | { |
20d695a9 AF |
160 | S390CPU *cpu = S390_CPU(cs); |
161 | CPUS390XState *env = &cpu->env; | |
5b08b344 | 162 | struct kvm_sregs sregs; |
0e60a699 | 163 | struct kvm_regs regs; |
5b08b344 | 164 | int ret; |
0e60a699 AG |
165 | int i; |
166 | ||
5b08b344 | 167 | /* get the PSW */ |
f7575c96 AF |
168 | env->psw.addr = cs->kvm_run->psw_addr; |
169 | env->psw.mask = cs->kvm_run->psw_mask; | |
5b08b344 CB |
170 | |
171 | /* the GPRS */ | |
f7575c96 | 172 | if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_GPRS) { |
5b08b344 | 173 | for (i = 0; i < 16; i++) { |
f7575c96 | 174 | env->regs[i] = cs->kvm_run->s.regs.gprs[i]; |
5b08b344 CB |
175 | } |
176 | } else { | |
1bc22652 | 177 | ret = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s); |
5b08b344 CB |
178 | if (ret < 0) { |
179 | return ret; | |
180 | } | |
181 | for (i = 0; i < 16; i++) { | |
182 | env->regs[i] = regs.gprs[i]; | |
183 | } | |
0e60a699 AG |
184 | } |
185 | ||
5b08b344 CB |
186 | /* The ACRS and CRS */ |
187 | if (cap_sync_regs && | |
f7575c96 AF |
188 | cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS && |
189 | cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) { | |
5b08b344 | 190 | for (i = 0; i < 16; i++) { |
f7575c96 AF |
191 | env->aregs[i] = cs->kvm_run->s.regs.acrs[i]; |
192 | env->cregs[i] = cs->kvm_run->s.regs.crs[i]; | |
5b08b344 CB |
193 | } |
194 | } else { | |
1bc22652 | 195 | ret = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs); |
5b08b344 CB |
196 | if (ret < 0) { |
197 | return ret; | |
198 | } | |
199 | for (i = 0; i < 16; i++) { | |
200 | env->aregs[i] = sregs.acrs[i]; | |
201 | env->cregs[i] = sregs.crs[i]; | |
202 | } | |
0e60a699 AG |
203 | } |
204 | ||
5b08b344 | 205 | /* Finally the prefix */ |
f7575c96 AF |
206 | if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) { |
207 | env->psa = cs->kvm_run->s.regs.prefix; | |
5b08b344 CB |
208 | } else { |
209 | /* no prefix without sync regs */ | |
210 | } | |
0e60a699 AG |
211 | |
212 | return 0; | |
213 | } | |
214 | ||
fdec9918 CB |
215 | /* |
216 | * Legacy layout for s390: | |
217 | * Older S390 KVM requires the topmost vma of the RAM to be | |
218 | * smaller than an system defined value, which is at least 256GB. | |
219 | * Larger systems have larger values. We put the guest between | |
220 | * the end of data segment (system break) and this value. We | |
221 | * use 32GB as a base to have enough room for the system break | |
222 | * to grow. We also have to use MAP parameters that avoid | |
223 | * read-only mapping of guest pages. | |
224 | */ | |
225 | static void *legacy_s390_alloc(ram_addr_t size) | |
226 | { | |
227 | void *mem; | |
228 | ||
229 | mem = mmap((void *) 0x800000000ULL, size, | |
230 | PROT_EXEC|PROT_READ|PROT_WRITE, | |
231 | MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0); | |
232 | if (mem == MAP_FAILED) { | |
233 | fprintf(stderr, "Allocating RAM failed\n"); | |
234 | abort(); | |
235 | } | |
236 | return mem; | |
237 | } | |
238 | ||
239 | void *kvm_arch_vmalloc(ram_addr_t size) | |
240 | { | |
241 | /* Can we use the standard allocation ? */ | |
242 | if (kvm_check_extension(kvm_state, KVM_CAP_S390_GMAP) && | |
243 | kvm_check_extension(kvm_state, KVM_CAP_S390_COW)) { | |
244 | return NULL; | |
245 | } else { | |
246 | return legacy_s390_alloc(size); | |
247 | } | |
248 | } | |
249 | ||
20d695a9 | 250 | int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp) |
0e60a699 | 251 | { |
20d695a9 AF |
252 | S390CPU *cpu = S390_CPU(cs); |
253 | CPUS390XState *env = &cpu->env; | |
0e60a699 AG |
254 | static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01}; |
255 | ||
256 | if (cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 4, 0) || | |
257 | cpu_memory_rw_debug(env, bp->pc, (uint8_t *)diag_501, 4, 1)) { | |
258 | return -EINVAL; | |
259 | } | |
260 | return 0; | |
261 | } | |
262 | ||
20d695a9 | 263 | int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp) |
0e60a699 | 264 | { |
20d695a9 AF |
265 | S390CPU *cpu = S390_CPU(cs); |
266 | CPUS390XState *env = &cpu->env; | |
0e60a699 AG |
267 | uint8_t t[4]; |
268 | static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01}; | |
269 | ||
270 | if (cpu_memory_rw_debug(env, bp->pc, t, 4, 0)) { | |
271 | return -EINVAL; | |
272 | } else if (memcmp(t, diag_501, 4)) { | |
273 | return -EINVAL; | |
274 | } else if (cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 1)) { | |
275 | return -EINVAL; | |
276 | } | |
277 | ||
278 | return 0; | |
279 | } | |
280 | ||
20d695a9 | 281 | void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run) |
0e60a699 | 282 | { |
0e60a699 AG |
283 | } |
284 | ||
20d695a9 | 285 | void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run) |
0e60a699 | 286 | { |
0e60a699 AG |
287 | } |
288 | ||
20d695a9 | 289 | int kvm_arch_process_async_events(CPUState *cs) |
0af691d7 | 290 | { |
20d695a9 AF |
291 | S390CPU *cpu = S390_CPU(cs); |
292 | return cpu->env.halted; | |
0af691d7 MT |
293 | } |
294 | ||
1bc22652 | 295 | void kvm_s390_interrupt_internal(S390CPU *cpu, int type, uint32_t parm, |
bcec36ea | 296 | uint64_t parm64, int vm) |
0e60a699 | 297 | { |
1bc22652 | 298 | CPUState *cs = CPU(cpu); |
0e60a699 AG |
299 | struct kvm_s390_interrupt kvmint; |
300 | int r; | |
301 | ||
a60f24b5 | 302 | if (!cs->kvm_state) { |
0e60a699 AG |
303 | return; |
304 | } | |
305 | ||
0e60a699 AG |
306 | kvmint.type = type; |
307 | kvmint.parm = parm; | |
308 | kvmint.parm64 = parm64; | |
309 | ||
310 | if (vm) { | |
a60f24b5 | 311 | r = kvm_vm_ioctl(cs->kvm_state, KVM_S390_INTERRUPT, &kvmint); |
0e60a699 | 312 | } else { |
1bc22652 | 313 | r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint); |
0e60a699 AG |
314 | } |
315 | ||
316 | if (r < 0) { | |
317 | fprintf(stderr, "KVM failed to inject interrupt\n"); | |
318 | exit(1); | |
319 | } | |
320 | } | |
321 | ||
1bc22652 | 322 | void kvm_s390_virtio_irq(S390CPU *cpu, int config_change, uint64_t token) |
0e60a699 | 323 | { |
1bc22652 | 324 | kvm_s390_interrupt_internal(cpu, KVM_S390_INT_VIRTIO, config_change, |
0e60a699 AG |
325 | token, 1); |
326 | } | |
327 | ||
1bc22652 | 328 | void kvm_s390_interrupt(S390CPU *cpu, int type, uint32_t code) |
0e60a699 | 329 | { |
1bc22652 | 330 | kvm_s390_interrupt_internal(cpu, type, code, 0, 0); |
0e60a699 AG |
331 | } |
332 | ||
1bc22652 | 333 | static void enter_pgmcheck(S390CPU *cpu, uint16_t code) |
0e60a699 | 334 | { |
1bc22652 | 335 | kvm_s390_interrupt(cpu, KVM_S390_PROGRAM_INT, code); |
0e60a699 AG |
336 | } |
337 | ||
f7575c96 | 338 | static inline void setcc(S390CPU *cpu, uint64_t cc) |
0e60a699 | 339 | { |
f7575c96 AF |
340 | CPUS390XState *env = &cpu->env; |
341 | CPUState *cs = CPU(cpu); | |
342 | ||
343 | cs->kvm_run->psw_mask &= ~(3ull << 44); | |
344 | cs->kvm_run->psw_mask |= (cc & 3) << 44; | |
0e60a699 AG |
345 | |
346 | env->psw.mask &= ~(3ul << 44); | |
347 | env->psw.mask |= (cc & 3) << 44; | |
348 | } | |
349 | ||
1bc22652 | 350 | static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run, |
bcec36ea | 351 | uint16_t ipbh0) |
0e60a699 | 352 | { |
1bc22652 | 353 | CPUS390XState *env = &cpu->env; |
0e60a699 AG |
354 | uint32_t sccb; |
355 | uint64_t code; | |
356 | int r = 0; | |
357 | ||
358 | cpu_synchronize_state(env); | |
359 | sccb = env->regs[ipbh0 & 0xf]; | |
360 | code = env->regs[(ipbh0 & 0xf0) >> 4]; | |
361 | ||
f6c98f92 | 362 | r = sclp_service_call(sccb, code); |
9abf567d | 363 | if (r < 0) { |
1bc22652 | 364 | enter_pgmcheck(cpu, -r); |
0e60a699 | 365 | } |
f7575c96 | 366 | setcc(cpu, r); |
81f7c56c | 367 | |
0e60a699 AG |
368 | return 0; |
369 | } | |
370 | ||
1bc22652 | 371 | static int handle_priv(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) |
0e60a699 AG |
372 | { |
373 | int r = 0; | |
374 | uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16; | |
375 | ||
376 | dprintf("KVM: PRIV: %d\n", ipa1); | |
377 | switch (ipa1) { | |
378 | case PRIV_SCLP_CALL: | |
1bc22652 | 379 | r = kvm_sclp_service_call(cpu, run, ipbh0); |
0e60a699 AG |
380 | break; |
381 | default: | |
382 | dprintf("KVM: unknown PRIV: 0x%x\n", ipa1); | |
383 | r = -1; | |
384 | break; | |
385 | } | |
386 | ||
387 | return r; | |
388 | } | |
389 | ||
a4e3ad19 | 390 | static int handle_hypercall(CPUS390XState *env, struct kvm_run *run) |
0e60a699 | 391 | { |
0e60a699 | 392 | cpu_synchronize_state(env); |
bcec36ea | 393 | env->regs[2] = s390_virtio_hypercall(env, env->regs[2], env->regs[1]); |
0e60a699 | 394 | |
bcec36ea | 395 | return 0; |
0e60a699 AG |
396 | } |
397 | ||
a4e3ad19 | 398 | static int handle_diag(CPUS390XState *env, struct kvm_run *run, int ipb_code) |
0e60a699 AG |
399 | { |
400 | int r = 0; | |
401 | ||
402 | switch (ipb_code) { | |
403 | case DIAG_KVM_HYPERCALL: | |
404 | r = handle_hypercall(env, run); | |
405 | break; | |
406 | case DIAG_KVM_BREAKPOINT: | |
407 | sleep(10); | |
408 | break; | |
409 | default: | |
410 | dprintf("KVM: unknown DIAG: 0x%x\n", ipb_code); | |
411 | r = -1; | |
412 | break; | |
413 | } | |
414 | ||
415 | return r; | |
416 | } | |
417 | ||
3edb8f92 | 418 | static int s390_cpu_restart(S390CPU *cpu) |
0e60a699 | 419 | { |
3edb8f92 AF |
420 | CPUS390XState *env = &cpu->env; |
421 | ||
1bc22652 | 422 | kvm_s390_interrupt(cpu, KVM_S390_RESTART, 0); |
854e42f3 | 423 | s390_add_running_cpu(env); |
c08d7424 | 424 | qemu_cpu_kick(CPU(cpu)); |
0e60a699 AG |
425 | dprintf("DONE: SIGP cpu restart: %p\n", env); |
426 | return 0; | |
427 | } | |
428 | ||
a4e3ad19 | 429 | static int s390_store_status(CPUS390XState *env, uint32_t parameter) |
0e60a699 AG |
430 | { |
431 | /* XXX */ | |
432 | fprintf(stderr, "XXX SIGP store status\n"); | |
433 | return -1; | |
434 | } | |
435 | ||
1bc22652 | 436 | static int s390_cpu_initial_reset(S390CPU *cpu) |
0e60a699 | 437 | { |
1bc22652 | 438 | CPUS390XState *env = &cpu->env; |
d5900813 AG |
439 | int i; |
440 | ||
2fb70f6f | 441 | s390_del_running_cpu(env); |
1bc22652 | 442 | if (kvm_vcpu_ioctl(CPU(cpu), KVM_S390_INITIAL_RESET, NULL) < 0) { |
d5900813 AG |
443 | perror("cannot init reset vcpu"); |
444 | } | |
445 | ||
446 | /* Manually zero out all registers */ | |
447 | cpu_synchronize_state(env); | |
448 | for (i = 0; i < 16; i++) { | |
449 | env->regs[i] = 0; | |
450 | } | |
451 | ||
452 | dprintf("DONE: SIGP initial reset: %p\n", env); | |
453 | return 0; | |
0e60a699 AG |
454 | } |
455 | ||
f7575c96 | 456 | static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) |
0e60a699 | 457 | { |
f7575c96 | 458 | CPUS390XState *env = &cpu->env; |
0e60a699 AG |
459 | uint8_t order_code; |
460 | uint32_t parameter; | |
461 | uint16_t cpu_addr; | |
462 | uint8_t t; | |
463 | int r = -1; | |
45fa769b | 464 | S390CPU *target_cpu; |
a4e3ad19 | 465 | CPUS390XState *target_env; |
0e60a699 AG |
466 | |
467 | cpu_synchronize_state(env); | |
468 | ||
469 | /* get order code */ | |
470 | order_code = run->s390_sieic.ipb >> 28; | |
471 | if (order_code > 0) { | |
472 | order_code = env->regs[order_code]; | |
473 | } | |
474 | order_code += (run->s390_sieic.ipb & 0x0fff0000) >> 16; | |
475 | ||
476 | /* get parameters */ | |
477 | t = (ipa1 & 0xf0) >> 4; | |
478 | if (!(t % 2)) { | |
479 | t++; | |
480 | } | |
481 | ||
482 | parameter = env->regs[t] & 0x7ffffe00; | |
483 | cpu_addr = env->regs[ipa1 & 0x0f]; | |
484 | ||
45fa769b AF |
485 | target_cpu = s390_cpu_addr2state(cpu_addr); |
486 | if (target_cpu == NULL) { | |
0e60a699 AG |
487 | goto out; |
488 | } | |
45fa769b | 489 | target_env = &target_cpu->env; |
0e60a699 AG |
490 | |
491 | switch (order_code) { | |
492 | case SIGP_RESTART: | |
3edb8f92 | 493 | r = s390_cpu_restart(target_cpu); |
0e60a699 AG |
494 | break; |
495 | case SIGP_STORE_STATUS_ADDR: | |
496 | r = s390_store_status(target_env, parameter); | |
497 | break; | |
498 | case SIGP_SET_ARCH: | |
499 | /* make the caller panic */ | |
500 | return -1; | |
501 | case SIGP_INITIAL_CPU_RESET: | |
1bc22652 | 502 | r = s390_cpu_initial_reset(target_cpu); |
0e60a699 AG |
503 | break; |
504 | default: | |
a74cdab4 | 505 | fprintf(stderr, "KVM: unknown SIGP: 0x%x\n", order_code); |
0e60a699 AG |
506 | break; |
507 | } | |
508 | ||
509 | out: | |
f7575c96 | 510 | setcc(cpu, r ? 3 : 0); |
0e60a699 AG |
511 | return 0; |
512 | } | |
513 | ||
1bc22652 | 514 | static int handle_instruction(S390CPU *cpu, struct kvm_run *run) |
0e60a699 | 515 | { |
1bc22652 | 516 | CPUS390XState *env = &cpu->env; |
0e60a699 AG |
517 | unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00); |
518 | uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff; | |
519 | int ipb_code = (run->s390_sieic.ipb & 0x0fff0000) >> 16; | |
d7963c43 | 520 | int r = -1; |
0e60a699 AG |
521 | |
522 | dprintf("handle_instruction 0x%x 0x%x\n", run->s390_sieic.ipa, run->s390_sieic.ipb); | |
523 | switch (ipa0) { | |
524 | case IPA0_PRIV: | |
1bc22652 | 525 | r = handle_priv(cpu, run, ipa1); |
0e60a699 AG |
526 | break; |
527 | case IPA0_DIAG: | |
528 | r = handle_diag(env, run, ipb_code); | |
529 | break; | |
530 | case IPA0_SIGP: | |
f7575c96 | 531 | r = handle_sigp(cpu, run, ipa1); |
0e60a699 AG |
532 | break; |
533 | } | |
534 | ||
535 | if (r < 0) { | |
1bc22652 | 536 | enter_pgmcheck(cpu, 0x0001); |
0e60a699 | 537 | } |
359507ee | 538 | return 0; |
0e60a699 AG |
539 | } |
540 | ||
f7575c96 | 541 | static bool is_special_wait_psw(CPUState *cs) |
eca3ed03 CB |
542 | { |
543 | /* signal quiesce */ | |
f7575c96 | 544 | return cs->kvm_run->psw_addr == 0xfffUL; |
eca3ed03 CB |
545 | } |
546 | ||
1bc22652 | 547 | static int handle_intercept(S390CPU *cpu) |
0e60a699 | 548 | { |
1bc22652 | 549 | CPUS390XState *env = &cpu->env; |
f7575c96 AF |
550 | CPUState *cs = CPU(cpu); |
551 | struct kvm_run *run = cs->kvm_run; | |
0e60a699 AG |
552 | int icpt_code = run->s390_sieic.icptcode; |
553 | int r = 0; | |
554 | ||
81f7c56c | 555 | dprintf("intercept: 0x%x (at 0x%lx)\n", icpt_code, |
f7575c96 | 556 | (long)cs->kvm_run->psw_addr); |
0e60a699 AG |
557 | switch (icpt_code) { |
558 | case ICPT_INSTRUCTION: | |
1bc22652 | 559 | r = handle_instruction(cpu, run); |
0e60a699 AG |
560 | break; |
561 | case ICPT_WAITPSW: | |
eca3ed03 | 562 | if (s390_del_running_cpu(env) == 0 && |
f7575c96 | 563 | is_special_wait_psw(cs)) { |
eca3ed03 CB |
564 | qemu_system_shutdown_request(); |
565 | } | |
566 | r = EXCP_HALTED; | |
567 | break; | |
854e42f3 CB |
568 | case ICPT_CPU_STOP: |
569 | if (s390_del_running_cpu(env) == 0) { | |
570 | qemu_system_shutdown_request(); | |
571 | } | |
572 | r = EXCP_HALTED; | |
0e60a699 AG |
573 | break; |
574 | case ICPT_SOFT_INTERCEPT: | |
575 | fprintf(stderr, "KVM unimplemented icpt SOFT\n"); | |
576 | exit(1); | |
577 | break; | |
0e60a699 AG |
578 | case ICPT_IO: |
579 | fprintf(stderr, "KVM unimplemented icpt IO\n"); | |
580 | exit(1); | |
581 | break; | |
582 | default: | |
583 | fprintf(stderr, "Unknown intercept code: %d\n", icpt_code); | |
584 | exit(1); | |
585 | break; | |
586 | } | |
587 | ||
588 | return r; | |
589 | } | |
590 | ||
20d695a9 | 591 | int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) |
0e60a699 | 592 | { |
20d695a9 | 593 | S390CPU *cpu = S390_CPU(cs); |
0e60a699 AG |
594 | int ret = 0; |
595 | ||
596 | switch (run->exit_reason) { | |
597 | case KVM_EXIT_S390_SIEIC: | |
1bc22652 | 598 | ret = handle_intercept(cpu); |
0e60a699 AG |
599 | break; |
600 | case KVM_EXIT_S390_RESET: | |
add142e0 | 601 | qemu_system_reset_request(); |
0e60a699 AG |
602 | break; |
603 | default: | |
604 | fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason); | |
605 | break; | |
606 | } | |
607 | ||
bb4ea393 JK |
608 | if (ret == 0) { |
609 | ret = EXCP_INTERRUPT; | |
bb4ea393 | 610 | } |
0e60a699 AG |
611 | return ret; |
612 | } | |
4513d923 | 613 | |
20d695a9 | 614 | bool kvm_arch_stop_on_emulation_error(CPUState *cpu) |
4513d923 GN |
615 | { |
616 | return true; | |
617 | } | |
a1b87fe0 | 618 | |
20d695a9 | 619 | int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr) |
a1b87fe0 JK |
620 | { |
621 | return 1; | |
622 | } | |
623 | ||
624 | int kvm_arch_on_sigbus(int code, void *addr) | |
625 | { | |
626 | return 1; | |
627 | } |