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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 | |
09b99878 CH |
50 | #define IPA0_B2 0xb200 |
51 | #define IPA0_B9 0xb900 | |
52 | #define IPA0_EB 0xeb00 | |
0e60a699 AG |
53 | |
54 | #define PRIV_SCLP_CALL 0x20 | |
09b99878 CH |
55 | #define PRIV_CSCH 0x30 |
56 | #define PRIV_HSCH 0x31 | |
57 | #define PRIV_MSCH 0x32 | |
58 | #define PRIV_SSCH 0x33 | |
59 | #define PRIV_STSCH 0x34 | |
60 | #define PRIV_TSCH 0x35 | |
61 | #define PRIV_TPI 0x36 | |
62 | #define PRIV_SAL 0x37 | |
63 | #define PRIV_RSCH 0x38 | |
64 | #define PRIV_STCRW 0x39 | |
65 | #define PRIV_STCPS 0x3a | |
66 | #define PRIV_RCHP 0x3b | |
67 | #define PRIV_SCHM 0x3c | |
68 | #define PRIV_CHSC 0x5f | |
69 | #define PRIV_SIGA 0x74 | |
70 | #define PRIV_XSCH 0x76 | |
71 | #define PRIV_SQBS 0x8a | |
72 | #define PRIV_EQBS 0x9c | |
0e60a699 AG |
73 | #define DIAG_KVM_HYPERCALL 0x500 |
74 | #define DIAG_KVM_BREAKPOINT 0x501 | |
75 | ||
0e60a699 AG |
76 | #define ICPT_INSTRUCTION 0x04 |
77 | #define ICPT_WAITPSW 0x1c | |
78 | #define ICPT_SOFT_INTERCEPT 0x24 | |
79 | #define ICPT_CPU_STOP 0x28 | |
80 | #define ICPT_IO 0x40 | |
81 | ||
82 | #define SIGP_RESTART 0x06 | |
83 | #define SIGP_INITIAL_CPU_RESET 0x0b | |
84 | #define SIGP_STORE_STATUS_ADDR 0x0e | |
85 | #define SIGP_SET_ARCH 0x12 | |
86 | ||
94a8d39a JK |
87 | const KVMCapabilityInfo kvm_arch_required_capabilities[] = { |
88 | KVM_CAP_LAST_INFO | |
89 | }; | |
90 | ||
5b08b344 CB |
91 | static int cap_sync_regs; |
92 | ||
cad1e282 | 93 | int kvm_arch_init(KVMState *s) |
0e60a699 | 94 | { |
5b08b344 | 95 | cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS); |
0e60a699 AG |
96 | return 0; |
97 | } | |
98 | ||
b164e48e EH |
99 | unsigned long kvm_arch_vcpu_id(CPUState *cpu) |
100 | { | |
101 | return cpu->cpu_index; | |
102 | } | |
103 | ||
20d695a9 | 104 | int kvm_arch_init_vcpu(CPUState *cpu) |
0e60a699 | 105 | { |
1c9d2a1d CB |
106 | /* nothing todo yet */ |
107 | return 0; | |
0e60a699 AG |
108 | } |
109 | ||
20d695a9 | 110 | void kvm_arch_reset_vcpu(CPUState *cpu) |
0e60a699 | 111 | { |
419831d7 AG |
112 | /* The initial reset call is needed here to reset in-kernel |
113 | * vcpu data that we can't access directly from QEMU | |
114 | * (i.e. with older kernels which don't support sync_regs/ONE_REG). | |
115 | * Before this ioctl cpu_synchronize_state() is called in common kvm | |
116 | * code (kvm-all) */ | |
70bada03 JF |
117 | if (kvm_vcpu_ioctl(cpu, KVM_S390_INITIAL_RESET, NULL)) { |
118 | perror("Can't reset vcpu\n"); | |
119 | } | |
0e60a699 AG |
120 | } |
121 | ||
20d695a9 | 122 | int kvm_arch_put_registers(CPUState *cs, int level) |
0e60a699 | 123 | { |
20d695a9 AF |
124 | S390CPU *cpu = S390_CPU(cs); |
125 | CPUS390XState *env = &cpu->env; | |
5b08b344 | 126 | struct kvm_sregs sregs; |
0e60a699 AG |
127 | struct kvm_regs regs; |
128 | int ret; | |
129 | int i; | |
130 | ||
5b08b344 | 131 | /* always save the PSW and the GPRS*/ |
f7575c96 AF |
132 | cs->kvm_run->psw_addr = env->psw.addr; |
133 | cs->kvm_run->psw_mask = env->psw.mask; | |
0e60a699 | 134 | |
f7575c96 | 135 | if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_GPRS) { |
5b08b344 | 136 | for (i = 0; i < 16; i++) { |
f7575c96 AF |
137 | cs->kvm_run->s.regs.gprs[i] = env->regs[i]; |
138 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS; | |
5b08b344 CB |
139 | } |
140 | } else { | |
141 | for (i = 0; i < 16; i++) { | |
142 | regs.gprs[i] = env->regs[i]; | |
143 | } | |
1bc22652 | 144 | ret = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s); |
5b08b344 CB |
145 | if (ret < 0) { |
146 | return ret; | |
147 | } | |
0e60a699 AG |
148 | } |
149 | ||
5b08b344 CB |
150 | /* Do we need to save more than that? */ |
151 | if (level == KVM_PUT_RUNTIME_STATE) { | |
152 | return 0; | |
0e60a699 AG |
153 | } |
154 | ||
5b08b344 | 155 | if (cap_sync_regs && |
f7575c96 AF |
156 | cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS && |
157 | cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) { | |
5b08b344 | 158 | for (i = 0; i < 16; i++) { |
f7575c96 AF |
159 | cs->kvm_run->s.regs.acrs[i] = env->aregs[i]; |
160 | cs->kvm_run->s.regs.crs[i] = env->cregs[i]; | |
5b08b344 | 161 | } |
f7575c96 AF |
162 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS; |
163 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS; | |
5b08b344 CB |
164 | } else { |
165 | for (i = 0; i < 16; i++) { | |
166 | sregs.acrs[i] = env->aregs[i]; | |
167 | sregs.crs[i] = env->cregs[i]; | |
168 | } | |
1bc22652 | 169 | ret = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs); |
5b08b344 CB |
170 | if (ret < 0) { |
171 | return ret; | |
172 | } | |
173 | } | |
0e60a699 | 174 | |
5b08b344 | 175 | /* Finally the prefix */ |
f7575c96 AF |
176 | if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) { |
177 | cs->kvm_run->s.regs.prefix = env->psa; | |
178 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX; | |
5b08b344 CB |
179 | } else { |
180 | /* prefix is only supported via sync regs */ | |
181 | } | |
182 | return 0; | |
0e60a699 AG |
183 | } |
184 | ||
20d695a9 | 185 | int kvm_arch_get_registers(CPUState *cs) |
0e60a699 | 186 | { |
20d695a9 AF |
187 | S390CPU *cpu = S390_CPU(cs); |
188 | CPUS390XState *env = &cpu->env; | |
5b08b344 | 189 | struct kvm_sregs sregs; |
0e60a699 | 190 | struct kvm_regs regs; |
5b08b344 | 191 | int ret; |
0e60a699 AG |
192 | int i; |
193 | ||
5b08b344 | 194 | /* get the PSW */ |
f7575c96 AF |
195 | env->psw.addr = cs->kvm_run->psw_addr; |
196 | env->psw.mask = cs->kvm_run->psw_mask; | |
5b08b344 CB |
197 | |
198 | /* the GPRS */ | |
f7575c96 | 199 | if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_GPRS) { |
5b08b344 | 200 | for (i = 0; i < 16; i++) { |
f7575c96 | 201 | env->regs[i] = cs->kvm_run->s.regs.gprs[i]; |
5b08b344 CB |
202 | } |
203 | } else { | |
1bc22652 | 204 | ret = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s); |
5b08b344 CB |
205 | if (ret < 0) { |
206 | return ret; | |
207 | } | |
208 | for (i = 0; i < 16; i++) { | |
209 | env->regs[i] = regs.gprs[i]; | |
210 | } | |
0e60a699 AG |
211 | } |
212 | ||
5b08b344 CB |
213 | /* The ACRS and CRS */ |
214 | if (cap_sync_regs && | |
f7575c96 AF |
215 | cs->kvm_run->kvm_valid_regs & KVM_SYNC_ACRS && |
216 | cs->kvm_run->kvm_valid_regs & KVM_SYNC_CRS) { | |
5b08b344 | 217 | for (i = 0; i < 16; i++) { |
f7575c96 AF |
218 | env->aregs[i] = cs->kvm_run->s.regs.acrs[i]; |
219 | env->cregs[i] = cs->kvm_run->s.regs.crs[i]; | |
5b08b344 CB |
220 | } |
221 | } else { | |
1bc22652 | 222 | ret = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs); |
5b08b344 CB |
223 | if (ret < 0) { |
224 | return ret; | |
225 | } | |
226 | for (i = 0; i < 16; i++) { | |
227 | env->aregs[i] = sregs.acrs[i]; | |
228 | env->cregs[i] = sregs.crs[i]; | |
229 | } | |
0e60a699 AG |
230 | } |
231 | ||
5b08b344 | 232 | /* Finally the prefix */ |
f7575c96 AF |
233 | if (cap_sync_regs && cs->kvm_run->kvm_valid_regs & KVM_SYNC_PREFIX) { |
234 | env->psa = cs->kvm_run->s.regs.prefix; | |
5b08b344 CB |
235 | } else { |
236 | /* no prefix without sync regs */ | |
237 | } | |
0e60a699 AG |
238 | |
239 | return 0; | |
240 | } | |
241 | ||
fdec9918 CB |
242 | /* |
243 | * Legacy layout for s390: | |
244 | * Older S390 KVM requires the topmost vma of the RAM to be | |
245 | * smaller than an system defined value, which is at least 256GB. | |
246 | * Larger systems have larger values. We put the guest between | |
247 | * the end of data segment (system break) and this value. We | |
248 | * use 32GB as a base to have enough room for the system break | |
249 | * to grow. We also have to use MAP parameters that avoid | |
250 | * read-only mapping of guest pages. | |
251 | */ | |
252 | static void *legacy_s390_alloc(ram_addr_t size) | |
253 | { | |
254 | void *mem; | |
255 | ||
256 | mem = mmap((void *) 0x800000000ULL, size, | |
257 | PROT_EXEC|PROT_READ|PROT_WRITE, | |
258 | MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0); | |
259 | if (mem == MAP_FAILED) { | |
260 | fprintf(stderr, "Allocating RAM failed\n"); | |
261 | abort(); | |
262 | } | |
263 | return mem; | |
264 | } | |
265 | ||
266 | void *kvm_arch_vmalloc(ram_addr_t size) | |
267 | { | |
268 | /* Can we use the standard allocation ? */ | |
269 | if (kvm_check_extension(kvm_state, KVM_CAP_S390_GMAP) && | |
270 | kvm_check_extension(kvm_state, KVM_CAP_S390_COW)) { | |
271 | return NULL; | |
272 | } else { | |
273 | return legacy_s390_alloc(size); | |
274 | } | |
275 | } | |
276 | ||
20d695a9 | 277 | int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp) |
0e60a699 | 278 | { |
20d695a9 AF |
279 | S390CPU *cpu = S390_CPU(cs); |
280 | CPUS390XState *env = &cpu->env; | |
0e60a699 AG |
281 | static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01}; |
282 | ||
283 | if (cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 4, 0) || | |
284 | cpu_memory_rw_debug(env, bp->pc, (uint8_t *)diag_501, 4, 1)) { | |
285 | return -EINVAL; | |
286 | } | |
287 | return 0; | |
288 | } | |
289 | ||
20d695a9 | 290 | int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp) |
0e60a699 | 291 | { |
20d695a9 AF |
292 | S390CPU *cpu = S390_CPU(cs); |
293 | CPUS390XState *env = &cpu->env; | |
0e60a699 AG |
294 | uint8_t t[4]; |
295 | static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01}; | |
296 | ||
297 | if (cpu_memory_rw_debug(env, bp->pc, t, 4, 0)) { | |
298 | return -EINVAL; | |
299 | } else if (memcmp(t, diag_501, 4)) { | |
300 | return -EINVAL; | |
301 | } else if (cpu_memory_rw_debug(env, bp->pc, (uint8_t *)&bp->saved_insn, 1, 1)) { | |
302 | return -EINVAL; | |
303 | } | |
304 | ||
305 | return 0; | |
306 | } | |
307 | ||
20d695a9 | 308 | void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run) |
0e60a699 | 309 | { |
0e60a699 AG |
310 | } |
311 | ||
20d695a9 | 312 | void kvm_arch_post_run(CPUState *cpu, struct kvm_run *run) |
0e60a699 | 313 | { |
0e60a699 AG |
314 | } |
315 | ||
20d695a9 | 316 | int kvm_arch_process_async_events(CPUState *cs) |
0af691d7 | 317 | { |
20d695a9 AF |
318 | S390CPU *cpu = S390_CPU(cs); |
319 | return cpu->env.halted; | |
0af691d7 MT |
320 | } |
321 | ||
1bc22652 | 322 | void kvm_s390_interrupt_internal(S390CPU *cpu, int type, uint32_t parm, |
bcec36ea | 323 | uint64_t parm64, int vm) |
0e60a699 | 324 | { |
1bc22652 | 325 | CPUState *cs = CPU(cpu); |
0e60a699 AG |
326 | struct kvm_s390_interrupt kvmint; |
327 | int r; | |
328 | ||
a60f24b5 | 329 | if (!cs->kvm_state) { |
0e60a699 AG |
330 | return; |
331 | } | |
332 | ||
0e60a699 AG |
333 | kvmint.type = type; |
334 | kvmint.parm = parm; | |
335 | kvmint.parm64 = parm64; | |
336 | ||
337 | if (vm) { | |
a60f24b5 | 338 | r = kvm_vm_ioctl(cs->kvm_state, KVM_S390_INTERRUPT, &kvmint); |
0e60a699 | 339 | } else { |
1bc22652 | 340 | r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint); |
0e60a699 AG |
341 | } |
342 | ||
343 | if (r < 0) { | |
344 | fprintf(stderr, "KVM failed to inject interrupt\n"); | |
345 | exit(1); | |
346 | } | |
347 | } | |
348 | ||
1bc22652 | 349 | void kvm_s390_virtio_irq(S390CPU *cpu, int config_change, uint64_t token) |
0e60a699 | 350 | { |
1bc22652 | 351 | kvm_s390_interrupt_internal(cpu, KVM_S390_INT_VIRTIO, config_change, |
0e60a699 AG |
352 | token, 1); |
353 | } | |
354 | ||
1bc22652 | 355 | void kvm_s390_interrupt(S390CPU *cpu, int type, uint32_t code) |
0e60a699 | 356 | { |
1bc22652 | 357 | kvm_s390_interrupt_internal(cpu, type, code, 0, 0); |
0e60a699 AG |
358 | } |
359 | ||
1bc22652 | 360 | static void enter_pgmcheck(S390CPU *cpu, uint16_t code) |
0e60a699 | 361 | { |
1bc22652 | 362 | kvm_s390_interrupt(cpu, KVM_S390_PROGRAM_INT, code); |
0e60a699 AG |
363 | } |
364 | ||
f7575c96 | 365 | static inline void setcc(S390CPU *cpu, uint64_t cc) |
0e60a699 | 366 | { |
f7575c96 AF |
367 | CPUS390XState *env = &cpu->env; |
368 | CPUState *cs = CPU(cpu); | |
369 | ||
370 | cs->kvm_run->psw_mask &= ~(3ull << 44); | |
371 | cs->kvm_run->psw_mask |= (cc & 3) << 44; | |
0e60a699 AG |
372 | |
373 | env->psw.mask &= ~(3ul << 44); | |
374 | env->psw.mask |= (cc & 3) << 44; | |
375 | } | |
376 | ||
1bc22652 | 377 | static int kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run, |
bcec36ea | 378 | uint16_t ipbh0) |
0e60a699 | 379 | { |
1bc22652 | 380 | CPUS390XState *env = &cpu->env; |
0e60a699 AG |
381 | uint32_t sccb; |
382 | uint64_t code; | |
383 | int r = 0; | |
384 | ||
385 | cpu_synchronize_state(env); | |
386 | sccb = env->regs[ipbh0 & 0xf]; | |
387 | code = env->regs[(ipbh0 & 0xf0) >> 4]; | |
388 | ||
f6c98f92 | 389 | r = sclp_service_call(sccb, code); |
9abf567d | 390 | if (r < 0) { |
1bc22652 | 391 | enter_pgmcheck(cpu, -r); |
0e60a699 | 392 | } |
f7575c96 | 393 | setcc(cpu, r); |
81f7c56c | 394 | |
0e60a699 AG |
395 | return 0; |
396 | } | |
397 | ||
09b99878 CH |
398 | static int kvm_handle_css_inst(S390CPU *cpu, struct kvm_run *run, |
399 | uint8_t ipa0, uint8_t ipa1, uint8_t ipb) | |
400 | { | |
401 | int r = 0; | |
402 | int no_cc = 0; | |
403 | CPUS390XState *env = &cpu->env; | |
404 | ||
405 | if (ipa0 != 0xb2) { | |
406 | /* Not handled for now. */ | |
407 | return -1; | |
408 | } | |
409 | cpu_synchronize_state(env); | |
410 | switch (ipa1) { | |
411 | case PRIV_XSCH: | |
412 | r = ioinst_handle_xsch(env, env->regs[1]); | |
413 | break; | |
414 | case PRIV_CSCH: | |
415 | r = ioinst_handle_csch(env, env->regs[1]); | |
416 | break; | |
417 | case PRIV_HSCH: | |
418 | r = ioinst_handle_hsch(env, env->regs[1]); | |
419 | break; | |
420 | case PRIV_MSCH: | |
421 | r = ioinst_handle_msch(env, env->regs[1], run->s390_sieic.ipb); | |
422 | break; | |
423 | case PRIV_SSCH: | |
424 | r = ioinst_handle_ssch(env, env->regs[1], run->s390_sieic.ipb); | |
425 | break; | |
426 | case PRIV_STCRW: | |
427 | r = ioinst_handle_stcrw(env, run->s390_sieic.ipb); | |
428 | break; | |
429 | case PRIV_STSCH: | |
430 | r = ioinst_handle_stsch(env, env->regs[1], run->s390_sieic.ipb); | |
431 | break; | |
432 | case PRIV_TSCH: | |
433 | /* We should only get tsch via KVM_EXIT_S390_TSCH. */ | |
434 | fprintf(stderr, "Spurious tsch intercept\n"); | |
435 | break; | |
436 | case PRIV_CHSC: | |
437 | r = ioinst_handle_chsc(env, run->s390_sieic.ipb); | |
438 | break; | |
439 | case PRIV_TPI: | |
440 | /* This should have been handled by kvm already. */ | |
441 | fprintf(stderr, "Spurious tpi intercept\n"); | |
442 | break; | |
443 | case PRIV_SCHM: | |
444 | no_cc = 1; | |
445 | r = ioinst_handle_schm(env, env->regs[1], env->regs[2], | |
446 | run->s390_sieic.ipb); | |
447 | break; | |
448 | case PRIV_RSCH: | |
449 | r = ioinst_handle_rsch(env, env->regs[1]); | |
450 | break; | |
451 | case PRIV_RCHP: | |
452 | r = ioinst_handle_rchp(env, env->regs[1]); | |
453 | break; | |
454 | case PRIV_STCPS: | |
455 | /* We do not provide this instruction, it is suppressed. */ | |
456 | no_cc = 1; | |
457 | r = 0; | |
458 | break; | |
459 | case PRIV_SAL: | |
460 | no_cc = 1; | |
461 | r = ioinst_handle_sal(env, env->regs[1]); | |
462 | break; | |
463 | default: | |
464 | r = -1; | |
465 | break; | |
466 | } | |
467 | ||
468 | if (r >= 0) { | |
469 | if (!no_cc) { | |
470 | setcc(cpu, r); | |
471 | } | |
472 | r = 0; | |
473 | } else if (r < -1) { | |
474 | r = 0; | |
475 | } | |
476 | return r; | |
477 | } | |
478 | ||
479 | static int is_ioinst(uint8_t ipa0, uint8_t ipa1, uint8_t ipb) | |
480 | { | |
481 | int ret = 0; | |
482 | uint16_t ipa = (ipa0 << 8) | ipa1; | |
483 | ||
484 | switch (ipa) { | |
485 | case IPA0_B2 | PRIV_CSCH: | |
486 | case IPA0_B2 | PRIV_HSCH: | |
487 | case IPA0_B2 | PRIV_MSCH: | |
488 | case IPA0_B2 | PRIV_SSCH: | |
489 | case IPA0_B2 | PRIV_STSCH: | |
490 | case IPA0_B2 | PRIV_TPI: | |
491 | case IPA0_B2 | PRIV_SAL: | |
492 | case IPA0_B2 | PRIV_RSCH: | |
493 | case IPA0_B2 | PRIV_STCRW: | |
494 | case IPA0_B2 | PRIV_STCPS: | |
495 | case IPA0_B2 | PRIV_RCHP: | |
496 | case IPA0_B2 | PRIV_SCHM: | |
497 | case IPA0_B2 | PRIV_CHSC: | |
498 | case IPA0_B2 | PRIV_SIGA: | |
499 | case IPA0_B2 | PRIV_XSCH: | |
500 | case IPA0_B9 | PRIV_EQBS: | |
501 | case IPA0_EB | PRIV_SQBS: | |
502 | ret = 1; | |
503 | break; | |
504 | } | |
505 | ||
506 | return ret; | |
507 | } | |
508 | ||
509 | static int handle_priv(S390CPU *cpu, struct kvm_run *run, | |
510 | uint8_t ipa0, uint8_t ipa1) | |
0e60a699 AG |
511 | { |
512 | int r = 0; | |
513 | uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16; | |
09b99878 | 514 | uint8_t ipb = run->s390_sieic.ipb & 0xff; |
0e60a699 AG |
515 | |
516 | dprintf("KVM: PRIV: %d\n", ipa1); | |
517 | switch (ipa1) { | |
518 | case PRIV_SCLP_CALL: | |
1bc22652 | 519 | r = kvm_sclp_service_call(cpu, run, ipbh0); |
0e60a699 AG |
520 | break; |
521 | default: | |
09b99878 CH |
522 | if (is_ioinst(ipa0, ipa1, ipb)) { |
523 | r = kvm_handle_css_inst(cpu, run, ipa0, ipa1, ipb); | |
524 | if (r == -1) { | |
525 | setcc(cpu, 3); | |
526 | r = 0; | |
527 | } | |
528 | } else { | |
529 | dprintf("KVM: unknown PRIV: 0x%x\n", ipa1); | |
530 | r = -1; | |
531 | } | |
0e60a699 AG |
532 | break; |
533 | } | |
534 | ||
535 | return r; | |
536 | } | |
537 | ||
a4e3ad19 | 538 | static int handle_hypercall(CPUS390XState *env, struct kvm_run *run) |
0e60a699 | 539 | { |
0e60a699 | 540 | cpu_synchronize_state(env); |
28e942f8 | 541 | env->regs[2] = s390_virtio_hypercall(env); |
0e60a699 | 542 | |
bcec36ea | 543 | return 0; |
0e60a699 AG |
544 | } |
545 | ||
a4e3ad19 | 546 | static int handle_diag(CPUS390XState *env, struct kvm_run *run, int ipb_code) |
0e60a699 AG |
547 | { |
548 | int r = 0; | |
549 | ||
550 | switch (ipb_code) { | |
551 | case DIAG_KVM_HYPERCALL: | |
552 | r = handle_hypercall(env, run); | |
553 | break; | |
554 | case DIAG_KVM_BREAKPOINT: | |
555 | sleep(10); | |
556 | break; | |
557 | default: | |
558 | dprintf("KVM: unknown DIAG: 0x%x\n", ipb_code); | |
559 | r = -1; | |
560 | break; | |
561 | } | |
562 | ||
563 | return r; | |
564 | } | |
565 | ||
3edb8f92 | 566 | static int s390_cpu_restart(S390CPU *cpu) |
0e60a699 | 567 | { |
1bc22652 | 568 | kvm_s390_interrupt(cpu, KVM_S390_RESTART, 0); |
49e15878 | 569 | s390_add_running_cpu(cpu); |
c08d7424 | 570 | qemu_cpu_kick(CPU(cpu)); |
49e15878 | 571 | dprintf("DONE: SIGP cpu restart: %p\n", &cpu->env); |
0e60a699 AG |
572 | return 0; |
573 | } | |
574 | ||
a4e3ad19 | 575 | static int s390_store_status(CPUS390XState *env, uint32_t parameter) |
0e60a699 AG |
576 | { |
577 | /* XXX */ | |
578 | fprintf(stderr, "XXX SIGP store status\n"); | |
579 | return -1; | |
580 | } | |
581 | ||
1bc22652 | 582 | static int s390_cpu_initial_reset(S390CPU *cpu) |
0e60a699 | 583 | { |
1bc22652 | 584 | CPUS390XState *env = &cpu->env; |
d5900813 AG |
585 | int i; |
586 | ||
49e15878 | 587 | s390_del_running_cpu(cpu); |
1bc22652 | 588 | if (kvm_vcpu_ioctl(CPU(cpu), KVM_S390_INITIAL_RESET, NULL) < 0) { |
d5900813 AG |
589 | perror("cannot init reset vcpu"); |
590 | } | |
591 | ||
592 | /* Manually zero out all registers */ | |
593 | cpu_synchronize_state(env); | |
594 | for (i = 0; i < 16; i++) { | |
595 | env->regs[i] = 0; | |
596 | } | |
597 | ||
598 | dprintf("DONE: SIGP initial reset: %p\n", env); | |
599 | return 0; | |
0e60a699 AG |
600 | } |
601 | ||
f7575c96 | 602 | static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) |
0e60a699 | 603 | { |
f7575c96 | 604 | CPUS390XState *env = &cpu->env; |
0e60a699 AG |
605 | uint8_t order_code; |
606 | uint32_t parameter; | |
607 | uint16_t cpu_addr; | |
608 | uint8_t t; | |
609 | int r = -1; | |
45fa769b | 610 | S390CPU *target_cpu; |
a4e3ad19 | 611 | CPUS390XState *target_env; |
0e60a699 AG |
612 | |
613 | cpu_synchronize_state(env); | |
614 | ||
615 | /* get order code */ | |
616 | order_code = run->s390_sieic.ipb >> 28; | |
617 | if (order_code > 0) { | |
618 | order_code = env->regs[order_code]; | |
619 | } | |
620 | order_code += (run->s390_sieic.ipb & 0x0fff0000) >> 16; | |
621 | ||
622 | /* get parameters */ | |
623 | t = (ipa1 & 0xf0) >> 4; | |
624 | if (!(t % 2)) { | |
625 | t++; | |
626 | } | |
627 | ||
628 | parameter = env->regs[t] & 0x7ffffe00; | |
629 | cpu_addr = env->regs[ipa1 & 0x0f]; | |
630 | ||
45fa769b AF |
631 | target_cpu = s390_cpu_addr2state(cpu_addr); |
632 | if (target_cpu == NULL) { | |
0e60a699 AG |
633 | goto out; |
634 | } | |
45fa769b | 635 | target_env = &target_cpu->env; |
0e60a699 AG |
636 | |
637 | switch (order_code) { | |
638 | case SIGP_RESTART: | |
3edb8f92 | 639 | r = s390_cpu_restart(target_cpu); |
0e60a699 AG |
640 | break; |
641 | case SIGP_STORE_STATUS_ADDR: | |
642 | r = s390_store_status(target_env, parameter); | |
643 | break; | |
644 | case SIGP_SET_ARCH: | |
645 | /* make the caller panic */ | |
646 | return -1; | |
647 | case SIGP_INITIAL_CPU_RESET: | |
1bc22652 | 648 | r = s390_cpu_initial_reset(target_cpu); |
0e60a699 AG |
649 | break; |
650 | default: | |
a74cdab4 | 651 | fprintf(stderr, "KVM: unknown SIGP: 0x%x\n", order_code); |
0e60a699 AG |
652 | break; |
653 | } | |
654 | ||
655 | out: | |
f7575c96 | 656 | setcc(cpu, r ? 3 : 0); |
0e60a699 AG |
657 | return 0; |
658 | } | |
659 | ||
1bc22652 | 660 | static int handle_instruction(S390CPU *cpu, struct kvm_run *run) |
0e60a699 | 661 | { |
1bc22652 | 662 | CPUS390XState *env = &cpu->env; |
0e60a699 AG |
663 | unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00); |
664 | uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff; | |
665 | int ipb_code = (run->s390_sieic.ipb & 0x0fff0000) >> 16; | |
d7963c43 | 666 | int r = -1; |
0e60a699 AG |
667 | |
668 | dprintf("handle_instruction 0x%x 0x%x\n", run->s390_sieic.ipa, run->s390_sieic.ipb); | |
669 | switch (ipa0) { | |
09b99878 CH |
670 | case IPA0_B2: |
671 | case IPA0_B9: | |
672 | case IPA0_EB: | |
673 | r = handle_priv(cpu, run, ipa0 >> 8, ipa1); | |
674 | break; | |
675 | case IPA0_DIAG: | |
676 | r = handle_diag(env, run, ipb_code); | |
677 | break; | |
678 | case IPA0_SIGP: | |
679 | r = handle_sigp(cpu, run, ipa1); | |
680 | break; | |
0e60a699 AG |
681 | } |
682 | ||
683 | if (r < 0) { | |
1bc22652 | 684 | enter_pgmcheck(cpu, 0x0001); |
0e60a699 | 685 | } |
359507ee | 686 | return 0; |
0e60a699 AG |
687 | } |
688 | ||
f7575c96 | 689 | static bool is_special_wait_psw(CPUState *cs) |
eca3ed03 CB |
690 | { |
691 | /* signal quiesce */ | |
f7575c96 | 692 | return cs->kvm_run->psw_addr == 0xfffUL; |
eca3ed03 CB |
693 | } |
694 | ||
1bc22652 | 695 | static int handle_intercept(S390CPU *cpu) |
0e60a699 | 696 | { |
f7575c96 AF |
697 | CPUState *cs = CPU(cpu); |
698 | struct kvm_run *run = cs->kvm_run; | |
0e60a699 AG |
699 | int icpt_code = run->s390_sieic.icptcode; |
700 | int r = 0; | |
701 | ||
81f7c56c | 702 | dprintf("intercept: 0x%x (at 0x%lx)\n", icpt_code, |
f7575c96 | 703 | (long)cs->kvm_run->psw_addr); |
0e60a699 AG |
704 | switch (icpt_code) { |
705 | case ICPT_INSTRUCTION: | |
1bc22652 | 706 | r = handle_instruction(cpu, run); |
0e60a699 AG |
707 | break; |
708 | case ICPT_WAITPSW: | |
49e15878 | 709 | if (s390_del_running_cpu(cpu) == 0 && |
f7575c96 | 710 | is_special_wait_psw(cs)) { |
eca3ed03 CB |
711 | qemu_system_shutdown_request(); |
712 | } | |
713 | r = EXCP_HALTED; | |
714 | break; | |
854e42f3 | 715 | case ICPT_CPU_STOP: |
49e15878 | 716 | if (s390_del_running_cpu(cpu) == 0) { |
854e42f3 CB |
717 | qemu_system_shutdown_request(); |
718 | } | |
719 | r = EXCP_HALTED; | |
0e60a699 AG |
720 | break; |
721 | case ICPT_SOFT_INTERCEPT: | |
722 | fprintf(stderr, "KVM unimplemented icpt SOFT\n"); | |
723 | exit(1); | |
724 | break; | |
0e60a699 AG |
725 | case ICPT_IO: |
726 | fprintf(stderr, "KVM unimplemented icpt IO\n"); | |
727 | exit(1); | |
728 | break; | |
729 | default: | |
730 | fprintf(stderr, "Unknown intercept code: %d\n", icpt_code); | |
731 | exit(1); | |
732 | break; | |
733 | } | |
734 | ||
735 | return r; | |
736 | } | |
737 | ||
09b99878 CH |
738 | static int handle_tsch(S390CPU *cpu) |
739 | { | |
740 | CPUS390XState *env = &cpu->env; | |
741 | CPUState *cs = CPU(cpu); | |
742 | struct kvm_run *run = cs->kvm_run; | |
743 | int ret; | |
744 | ||
745 | cpu_synchronize_state(env); | |
746 | ret = ioinst_handle_tsch(env, env->regs[1], run->s390_tsch.ipb); | |
747 | if (ret >= 0) { | |
748 | /* Success; set condition code. */ | |
749 | setcc(cpu, ret); | |
750 | ret = 0; | |
751 | } else if (ret < -1) { | |
752 | /* | |
753 | * Failure. | |
754 | * If an I/O interrupt had been dequeued, we have to reinject it. | |
755 | */ | |
756 | if (run->s390_tsch.dequeued) { | |
757 | uint16_t subchannel_id = run->s390_tsch.subchannel_id; | |
758 | uint16_t subchannel_nr = run->s390_tsch.subchannel_nr; | |
759 | uint32_t io_int_parm = run->s390_tsch.io_int_parm; | |
760 | uint32_t io_int_word = run->s390_tsch.io_int_word; | |
761 | uint32_t type = ((subchannel_id & 0xff00) << 24) | | |
762 | ((subchannel_id & 0x00060) << 22) | (subchannel_nr << 16); | |
763 | ||
764 | kvm_s390_interrupt_internal(cpu, type, | |
765 | ((uint32_t)subchannel_id << 16) | |
766 | | subchannel_nr, | |
767 | ((uint64_t)io_int_parm << 32) | |
768 | | io_int_word, 1); | |
769 | } | |
770 | ret = 0; | |
771 | } | |
772 | return ret; | |
773 | } | |
774 | ||
20d695a9 | 775 | int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) |
0e60a699 | 776 | { |
20d695a9 | 777 | S390CPU *cpu = S390_CPU(cs); |
0e60a699 AG |
778 | int ret = 0; |
779 | ||
780 | switch (run->exit_reason) { | |
781 | case KVM_EXIT_S390_SIEIC: | |
1bc22652 | 782 | ret = handle_intercept(cpu); |
0e60a699 AG |
783 | break; |
784 | case KVM_EXIT_S390_RESET: | |
add142e0 | 785 | qemu_system_reset_request(); |
0e60a699 | 786 | break; |
09b99878 CH |
787 | case KVM_EXIT_S390_TSCH: |
788 | ret = handle_tsch(cpu); | |
789 | break; | |
0e60a699 AG |
790 | default: |
791 | fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason); | |
792 | break; | |
793 | } | |
794 | ||
bb4ea393 JK |
795 | if (ret == 0) { |
796 | ret = EXCP_INTERRUPT; | |
bb4ea393 | 797 | } |
0e60a699 AG |
798 | return ret; |
799 | } | |
4513d923 | 800 | |
20d695a9 | 801 | bool kvm_arch_stop_on_emulation_error(CPUState *cpu) |
4513d923 GN |
802 | { |
803 | return true; | |
804 | } | |
a1b87fe0 | 805 | |
20d695a9 | 806 | int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr) |
a1b87fe0 JK |
807 | { |
808 | return 1; | |
809 | } | |
810 | ||
811 | int kvm_arch_on_sigbus(int code, void *addr) | |
812 | { | |
813 | return 1; | |
814 | } | |
09b99878 CH |
815 | |
816 | void kvm_s390_io_interrupt(S390CPU *cpu, uint16_t subchannel_id, | |
817 | uint16_t subchannel_nr, uint32_t io_int_parm, | |
818 | uint32_t io_int_word) | |
819 | { | |
820 | uint32_t type; | |
821 | ||
822 | type = ((subchannel_id & 0xff00) << 24) | | |
823 | ((subchannel_id & 0x00060) << 22) | (subchannel_nr << 16); | |
824 | kvm_s390_interrupt_internal(cpu, type, | |
825 | ((uint32_t)subchannel_id << 16) | subchannel_nr, | |
826 | ((uint64_t)io_int_parm << 32) | io_int_word, 1); | |
827 | } | |
828 | ||
829 | void kvm_s390_crw_mchk(S390CPU *cpu) | |
830 | { | |
831 | kvm_s390_interrupt_internal(cpu, KVM_S390_MCHK, 1 << 28, | |
832 | 0x00400f1d40330000, 1); | |
833 | } | |
834 | ||
835 | void kvm_s390_enable_css_support(S390CPU *cpu) | |
836 | { | |
837 | struct kvm_enable_cap cap = {}; | |
838 | int r; | |
839 | ||
840 | /* Activate host kernel channel subsystem support. */ | |
841 | cap.cap = KVM_CAP_S390_CSS_SUPPORT; | |
842 | r = kvm_vcpu_ioctl(CPU(cpu), KVM_ENABLE_CAP, &cap); | |
843 | assert(r == 0); | |
844 | } |