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Commit | Line | Data |
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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 | 6 | * |
44699e1c TH |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
0e60a699 | 11 | * |
44699e1c | 12 | * This program is distributed in the hope that it will be useful, |
0e60a699 AG |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
44699e1c | 15 | * General Public License for more details. |
0e60a699 | 16 | * |
44699e1c TH |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with this program; if not, see <http://www.gnu.org/licenses/>. | |
0e60a699 AG |
19 | */ |
20 | ||
9615495a | 21 | #include "qemu/osdep.h" |
0e60a699 | 22 | #include <sys/ioctl.h> |
0e60a699 AG |
23 | |
24 | #include <linux/kvm.h> | |
25 | #include <asm/ptrace.h> | |
26 | ||
33c11879 | 27 | #include "cpu.h" |
b6b47223 | 28 | #include "s390x-internal.h" |
f16bbb9b | 29 | #include "kvm_s390x.h" |
fb1fc5a8 | 30 | #include "sysemu/kvm_int.h" |
e6a80232 | 31 | #include "qemu/cutils.h" |
e688df6b | 32 | #include "qapi/error.h" |
d49b6836 | 33 | #include "qemu/error-report.h" |
1de7afc9 | 34 | #include "qemu/timer.h" |
09c6c754 | 35 | #include "qemu/units.h" |
db725815 | 36 | #include "qemu/main-loop.h" |
09c6c754 | 37 | #include "qemu/mmap-alloc.h" |
52341ed6 | 38 | #include "qemu/log.h" |
9c17d615 | 39 | #include "sysemu/sysemu.h" |
8195d899 | 40 | #include "sysemu/hw_accel.h" |
54d31236 | 41 | #include "sysemu/runstate.h" |
9c17d615 | 42 | #include "sysemu/device_tree.h" |
770a6379 | 43 | #include "exec/gdbstub.h" |
f6b51efa | 44 | #include "exec/ram_addr.h" |
860643bc | 45 | #include "trace.h" |
863f6f52 | 46 | #include "hw/s390x/s390-pci-inst.h" |
9e03a040 | 47 | #include "hw/s390x/s390-pci-bus.h" |
e91e972c | 48 | #include "hw/s390x/ipl.h" |
f07177a5 | 49 | #include "hw/s390x/ebcdic.h" |
4c663752 | 50 | #include "exec/memattrs.h" |
9700230b | 51 | #include "hw/s390x/s390-virtio-ccw.h" |
2c98a6c1 | 52 | #include "hw/s390x/s390-virtio-hcall.h" |
7c713b8a | 53 | #include "hw/s390x/pv.h" |
0e60a699 | 54 | |
08564ecd DA |
55 | #ifndef DEBUG_KVM |
56 | #define DEBUG_KVM 0 | |
0e60a699 AG |
57 | #endif |
58 | ||
08564ecd DA |
59 | #define DPRINTF(fmt, ...) do { \ |
60 | if (DEBUG_KVM) { \ | |
61 | fprintf(stderr, fmt, ## __VA_ARGS__); \ | |
62 | } \ | |
2562755e | 63 | } while (0) |
08564ecd | 64 | |
2b147555 DD |
65 | #define kvm_vm_check_mem_attr(s, attr) \ |
66 | kvm_vm_check_attr(s, KVM_S390_VM_MEM_CTRL, attr) | |
67 | ||
0e60a699 AG |
68 | #define IPA0_DIAG 0x8300 |
69 | #define IPA0_SIGP 0xae00 | |
09b99878 CH |
70 | #define IPA0_B2 0xb200 |
71 | #define IPA0_B9 0xb900 | |
72 | #define IPA0_EB 0xeb00 | |
863f6f52 | 73 | #define IPA0_E3 0xe300 |
0e60a699 | 74 | |
1eecf41b FB |
75 | #define PRIV_B2_SCLP_CALL 0x20 |
76 | #define PRIV_B2_CSCH 0x30 | |
77 | #define PRIV_B2_HSCH 0x31 | |
78 | #define PRIV_B2_MSCH 0x32 | |
79 | #define PRIV_B2_SSCH 0x33 | |
80 | #define PRIV_B2_STSCH 0x34 | |
81 | #define PRIV_B2_TSCH 0x35 | |
82 | #define PRIV_B2_TPI 0x36 | |
83 | #define PRIV_B2_SAL 0x37 | |
84 | #define PRIV_B2_RSCH 0x38 | |
85 | #define PRIV_B2_STCRW 0x39 | |
86 | #define PRIV_B2_STCPS 0x3a | |
87 | #define PRIV_B2_RCHP 0x3b | |
88 | #define PRIV_B2_SCHM 0x3c | |
89 | #define PRIV_B2_CHSC 0x5f | |
90 | #define PRIV_B2_SIGA 0x74 | |
91 | #define PRIV_B2_XSCH 0x76 | |
92 | ||
93 | #define PRIV_EB_SQBS 0x8a | |
863f6f52 FB |
94 | #define PRIV_EB_PCISTB 0xd0 |
95 | #define PRIV_EB_SIC 0xd1 | |
1eecf41b FB |
96 | |
97 | #define PRIV_B9_EQBS 0x9c | |
863f6f52 FB |
98 | #define PRIV_B9_CLP 0xa0 |
99 | #define PRIV_B9_PCISTG 0xd0 | |
100 | #define PRIV_B9_PCILG 0xd2 | |
101 | #define PRIV_B9_RPCIT 0xd3 | |
102 | ||
103 | #define PRIV_E3_MPCIFC 0xd0 | |
104 | #define PRIV_E3_STPCIFC 0xd4 | |
1eecf41b | 105 | |
8fc639af | 106 | #define DIAG_TIMEREVENT 0x288 |
268846ba | 107 | #define DIAG_IPL 0x308 |
fabdada9 | 108 | #define DIAG_SET_CONTROL_PROGRAM_CODES 0x318 |
0e60a699 AG |
109 | #define DIAG_KVM_HYPERCALL 0x500 |
110 | #define DIAG_KVM_BREAKPOINT 0x501 | |
111 | ||
0e60a699 | 112 | #define ICPT_INSTRUCTION 0x04 |
6449a41a | 113 | #define ICPT_PROGRAM 0x08 |
a2689242 | 114 | #define ICPT_EXT_INT 0x14 |
0e60a699 AG |
115 | #define ICPT_WAITPSW 0x1c |
116 | #define ICPT_SOFT_INTERCEPT 0x24 | |
117 | #define ICPT_CPU_STOP 0x28 | |
b60fae32 | 118 | #define ICPT_OPEREXC 0x2c |
0e60a699 | 119 | #define ICPT_IO 0x40 |
2585e507 JF |
120 | #define ICPT_PV_INSTR 0x68 |
121 | #define ICPT_PV_INSTR_NOTIFICATION 0x6c | |
0e60a699 | 122 | |
3cda44f7 JF |
123 | #define NR_LOCAL_IRQS 32 |
124 | /* | |
125 | * Needs to be big enough to contain max_cpus emergency signals | |
126 | * and in addition NR_LOCAL_IRQS interrupts | |
127 | */ | |
ae71ed86 LX |
128 | #define VCPU_IRQ_BUF_SIZE(max_cpus) (sizeof(struct kvm_s390_irq) * \ |
129 | (max_cpus + NR_LOCAL_IRQS)) | |
fb1fc5a8 IM |
130 | /* |
131 | * KVM does only support memory slots up to KVM_MEM_MAX_NR_PAGES pages | |
132 | * as the dirty bitmap must be managed by bitops that take an int as | |
c5b9ce51 CB |
133 | * position indicator. This would end at an unaligned address |
134 | * (0x7fffff00000). As future variants might provide larger pages | |
135 | * and to make all addresses properly aligned, let us split at 4TB. | |
fb1fc5a8 | 136 | */ |
c5b9ce51 | 137 | #define KVM_SLOT_MAX_BYTES (4UL * TiB) |
3cda44f7 | 138 | |
770a6379 DH |
139 | static CPUWatchpoint hw_watchpoint; |
140 | /* | |
141 | * We don't use a list because this structure is also used to transmit the | |
142 | * hardware breakpoints to the kernel. | |
143 | */ | |
144 | static struct kvm_hw_breakpoint *hw_breakpoints; | |
145 | static int nb_hw_breakpoints; | |
146 | ||
94a8d39a JK |
147 | const KVMCapabilityInfo kvm_arch_required_capabilities[] = { |
148 | KVM_CAP_LAST_INFO | |
149 | }; | |
150 | ||
5b08b344 | 151 | static int cap_sync_regs; |
819bd309 | 152 | static int cap_async_pf; |
a9bcd1b8 | 153 | static int cap_mem_op; |
1191c949 | 154 | static int cap_s390_irq; |
9700230b | 155 | static int cap_ri; |
09c6c754 | 156 | static int cap_hpage_1m; |
b91a0394 | 157 | static int cap_vcpu_resets; |
1cca8265 | 158 | static int cap_protected; |
5b08b344 | 159 | |
03f47ee4 JF |
160 | static int active_cmma; |
161 | ||
708f99c3 | 162 | static int kvm_s390_query_mem_limit(uint64_t *memory_limit) |
a310b283 DD |
163 | { |
164 | struct kvm_device_attr attr = { | |
165 | .group = KVM_S390_VM_MEM_CTRL, | |
166 | .attr = KVM_S390_VM_MEM_LIMIT_SIZE, | |
167 | .addr = (uint64_t) memory_limit, | |
168 | }; | |
169 | ||
708f99c3 | 170 | return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr); |
a310b283 DD |
171 | } |
172 | ||
708f99c3 | 173 | int kvm_s390_set_mem_limit(uint64_t new_limit, uint64_t *hw_limit) |
a310b283 DD |
174 | { |
175 | int rc; | |
176 | ||
177 | struct kvm_device_attr attr = { | |
178 | .group = KVM_S390_VM_MEM_CTRL, | |
179 | .attr = KVM_S390_VM_MEM_LIMIT_SIZE, | |
180 | .addr = (uint64_t) &new_limit, | |
181 | }; | |
182 | ||
708f99c3 | 183 | if (!kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_LIMIT_SIZE)) { |
a310b283 DD |
184 | return 0; |
185 | } | |
186 | ||
708f99c3 | 187 | rc = kvm_s390_query_mem_limit(hw_limit); |
a310b283 DD |
188 | if (rc) { |
189 | return rc; | |
190 | } else if (*hw_limit < new_limit) { | |
191 | return -E2BIG; | |
192 | } | |
193 | ||
708f99c3 | 194 | return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr); |
a310b283 DD |
195 | } |
196 | ||
03f47ee4 JF |
197 | int kvm_s390_cmma_active(void) |
198 | { | |
199 | return active_cmma; | |
200 | } | |
201 | ||
07059eff DH |
202 | static bool kvm_s390_cmma_available(void) |
203 | { | |
204 | static bool initialized, value; | |
205 | ||
206 | if (!initialized) { | |
207 | initialized = true; | |
208 | value = kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_ENABLE_CMMA) && | |
209 | kvm_vm_check_mem_attr(kvm_state, KVM_S390_VM_MEM_CLR_CMMA); | |
210 | } | |
211 | return value; | |
212 | } | |
213 | ||
1cd4e0f6 | 214 | void kvm_s390_cmma_reset(void) |
4cb88c3c DD |
215 | { |
216 | int rc; | |
4cb88c3c DD |
217 | struct kvm_device_attr attr = { |
218 | .group = KVM_S390_VM_MEM_CTRL, | |
219 | .attr = KVM_S390_VM_MEM_CLR_CMMA, | |
220 | }; | |
221 | ||
03f47ee4 | 222 | if (!kvm_s390_cmma_active()) { |
07059eff DH |
223 | return; |
224 | } | |
225 | ||
1cd4e0f6 | 226 | rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr); |
4cb88c3c DD |
227 | trace_kvm_clear_cmma(rc); |
228 | } | |
229 | ||
07059eff | 230 | static void kvm_s390_enable_cmma(void) |
4cb88c3c DD |
231 | { |
232 | int rc; | |
233 | struct kvm_device_attr attr = { | |
234 | .group = KVM_S390_VM_MEM_CTRL, | |
235 | .attr = KVM_S390_VM_MEM_ENABLE_CMMA, | |
236 | }; | |
237 | ||
09c6c754 | 238 | if (cap_hpage_1m) { |
55d527a9 | 239 | warn_report("CMM will not be enabled because it is not " |
09c6c754 | 240 | "compatible with huge memory backings."); |
03f47ee4 JF |
241 | return; |
242 | } | |
07059eff | 243 | rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr); |
03f47ee4 | 244 | active_cmma = !rc; |
4cb88c3c DD |
245 | trace_kvm_enable_cmma(rc); |
246 | } | |
247 | ||
2eb1cd07 TK |
248 | static void kvm_s390_set_attr(uint64_t attr) |
249 | { | |
250 | struct kvm_device_attr attribute = { | |
251 | .group = KVM_S390_VM_CRYPTO, | |
252 | .attr = attr, | |
253 | }; | |
254 | ||
255 | int ret = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attribute); | |
256 | ||
257 | if (ret) { | |
258 | error_report("Failed to set crypto device attribute %lu: %s", | |
259 | attr, strerror(-ret)); | |
260 | } | |
261 | } | |
262 | ||
263 | static void kvm_s390_init_aes_kw(void) | |
264 | { | |
265 | uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_AES_KW; | |
266 | ||
267 | if (object_property_get_bool(OBJECT(qdev_get_machine()), "aes-key-wrap", | |
268 | NULL)) { | |
269 | attr = KVM_S390_VM_CRYPTO_ENABLE_AES_KW; | |
270 | } | |
271 | ||
272 | if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) { | |
273 | kvm_s390_set_attr(attr); | |
274 | } | |
275 | } | |
276 | ||
277 | static void kvm_s390_init_dea_kw(void) | |
278 | { | |
279 | uint64_t attr = KVM_S390_VM_CRYPTO_DISABLE_DEA_KW; | |
280 | ||
281 | if (object_property_get_bool(OBJECT(qdev_get_machine()), "dea-key-wrap", | |
282 | NULL)) { | |
283 | attr = KVM_S390_VM_CRYPTO_ENABLE_DEA_KW; | |
284 | } | |
285 | ||
286 | if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) { | |
287 | kvm_s390_set_attr(attr); | |
288 | } | |
289 | } | |
290 | ||
4ab72920 | 291 | void kvm_s390_crypto_reset(void) |
2eb1cd07 | 292 | { |
c85d21c7 DH |
293 | if (s390_has_feat(S390_FEAT_MSA_EXT_3)) { |
294 | kvm_s390_init_aes_kw(); | |
295 | kvm_s390_init_dea_kw(); | |
296 | } | |
2eb1cd07 TK |
297 | } |
298 | ||
9138977b | 299 | void kvm_s390_set_max_pagesize(uint64_t pagesize, Error **errp) |
09c6c754 | 300 | { |
9138977b DH |
301 | if (pagesize == 4 * KiB) { |
302 | return; | |
09c6c754 JF |
303 | } |
304 | ||
28221f9c | 305 | if (!hpage_1m_allowed()) { |
9138977b DH |
306 | error_setg(errp, "This QEMU machine does not support huge page " |
307 | "mappings"); | |
308 | return; | |
28221f9c JF |
309 | } |
310 | ||
9138977b DH |
311 | if (pagesize != 1 * MiB) { |
312 | error_setg(errp, "Memory backing with 2G pages was specified, " | |
313 | "but KVM does not support this memory backing"); | |
314 | return; | |
09c6c754 JF |
315 | } |
316 | ||
9138977b DH |
317 | if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_HPAGE_1M, 0)) { |
318 | error_setg(errp, "Memory backing with 1M pages was specified, " | |
319 | "but KVM does not support this memory backing"); | |
320 | return; | |
09c6c754 JF |
321 | } |
322 | ||
323 | cap_hpage_1m = 1; | |
09c6c754 JF |
324 | } |
325 | ||
c3347ed0 JF |
326 | int kvm_s390_get_hpage_1m(void) |
327 | { | |
328 | return cap_hpage_1m; | |
329 | } | |
330 | ||
de60a92e | 331 | static void ccw_machine_class_foreach(ObjectClass *oc, void *opaque) |
0e60a699 | 332 | { |
de60a92e | 333 | MachineClass *mc = MACHINE_CLASS(oc); |
b6805e12 IM |
334 | |
335 | mc->default_cpu_type = S390_CPU_TYPE_NAME("host"); | |
de60a92e DH |
336 | } |
337 | ||
338 | int kvm_arch_init(MachineState *ms, KVMState *s) | |
339 | { | |
340 | object_class_foreach(ccw_machine_class_foreach, TYPE_S390_CCW_MACHINE, | |
341 | false, NULL); | |
7d69e8bc TH |
342 | |
343 | if (!kvm_check_extension(kvm_state, KVM_CAP_DEVICE_CTRL)) { | |
344 | error_report("KVM is missing capability KVM_CAP_DEVICE_CTRL - " | |
345 | "please use kernel 3.15 or newer"); | |
346 | return -1; | |
347 | } | |
996e7e4b DH |
348 | if (!kvm_check_extension(s, KVM_CAP_S390_COW)) { |
349 | error_report("KVM is missing capability KVM_CAP_S390_COW - " | |
350 | "unsupported environment"); | |
351 | return -1; | |
352 | } | |
7d69e8bc | 353 | |
5b08b344 | 354 | cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS); |
819bd309 | 355 | cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF); |
a9bcd1b8 | 356 | cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP); |
1191c949 | 357 | cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ); |
b91a0394 | 358 | cap_vcpu_resets = kvm_check_extension(s, KVM_CAP_S390_VCPU_RESETS); |
1cca8265 | 359 | cap_protected = kvm_check_extension(s, KVM_CAP_S390_PROTECTED); |
4cb88c3c | 360 | |
f16d3f58 | 361 | kvm_vm_enable_cap(s, KVM_CAP_S390_USER_SIGP, 0); |
46ca6b3b | 362 | kvm_vm_enable_cap(s, KVM_CAP_S390_VECTOR_REGISTERS, 0); |
f07177a5 | 363 | kvm_vm_enable_cap(s, KVM_CAP_S390_USER_STSI, 0); |
9700230b FZ |
364 | if (ri_allowed()) { |
365 | if (kvm_vm_enable_cap(s, KVM_CAP_S390_RI, 0) == 0) { | |
366 | cap_ri = 1; | |
367 | } | |
368 | } | |
0280b3eb | 369 | if (cpu_model_allowed()) { |
3fb3b122 | 370 | kvm_vm_enable_cap(s, KVM_CAP_S390_GS, 0); |
62deb62d | 371 | } |
f16d3f58 | 372 | |
3f2d07b3 CB |
373 | /* |
374 | * The migration interface for ais was introduced with kernel 4.13 | |
375 | * but the capability itself had been active since 4.12. As migration | |
a5c8617a TH |
376 | * support is considered necessary, we only try to enable this for |
377 | * newer machine types if KVM_CAP_S390_AIS_MIGRATION is available. | |
3f2d07b3 | 378 | */ |
a5c8617a TH |
379 | if (cpu_model_allowed() && kvm_kernel_irqchip_allowed() && |
380 | kvm_check_extension(s, KVM_CAP_S390_AIS_MIGRATION)) { | |
381 | kvm_vm_enable_cap(s, KVM_CAP_S390_AIS, 0); | |
382 | } | |
3b00f702 | 383 | |
fb1fc5a8 | 384 | kvm_set_max_memslot_size(KVM_SLOT_MAX_BYTES); |
0e60a699 AG |
385 | return 0; |
386 | } | |
387 | ||
4376c40d | 388 | int kvm_arch_irqchip_create(KVMState *s) |
d525ffab PB |
389 | { |
390 | return 0; | |
391 | } | |
392 | ||
b164e48e EH |
393 | unsigned long kvm_arch_vcpu_id(CPUState *cpu) |
394 | { | |
395 | return cpu->cpu_index; | |
396 | } | |
397 | ||
c9e659c9 | 398 | int kvm_arch_init_vcpu(CPUState *cs) |
0e60a699 | 399 | { |
ae71ed86 | 400 | unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus; |
c9e659c9 DH |
401 | S390CPU *cpu = S390_CPU(cs); |
402 | kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state); | |
ae71ed86 | 403 | cpu->irqstate = g_malloc0(VCPU_IRQ_BUF_SIZE(max_cpus)); |
1c9d2a1d | 404 | return 0; |
0e60a699 AG |
405 | } |
406 | ||
b1115c99 LA |
407 | int kvm_arch_destroy_vcpu(CPUState *cs) |
408 | { | |
409 | S390CPU *cpu = S390_CPU(cs); | |
410 | ||
411 | g_free(cpu->irqstate); | |
412 | cpu->irqstate = NULL; | |
413 | ||
414 | return 0; | |
415 | } | |
416 | ||
b91a0394 | 417 | static void kvm_s390_reset_vcpu(S390CPU *cpu, unsigned long type) |
0e60a699 | 418 | { |
50a2c6e5 PB |
419 | CPUState *cs = CPU(cpu); |
420 | ||
b91a0394 JF |
421 | /* |
422 | * The reset call is needed here to reset in-kernel vcpu data that | |
423 | * we can't access directly from QEMU (i.e. with older kernels | |
424 | * which don't support sync_regs/ONE_REG). Before this ioctl | |
425 | * cpu_synchronize_state() is called in common kvm code | |
426 | * (kvm-all). | |
427 | */ | |
428 | if (kvm_vcpu_ioctl(cs, type)) { | |
429 | error_report("CPU reset failed on CPU %i type %lx", | |
430 | cs->cpu_index, type); | |
431 | } | |
432 | } | |
433 | ||
434 | void kvm_s390_reset_vcpu_initial(S390CPU *cpu) | |
435 | { | |
436 | kvm_s390_reset_vcpu(cpu, KVM_S390_INITIAL_RESET); | |
437 | } | |
438 | ||
439 | void kvm_s390_reset_vcpu_clear(S390CPU *cpu) | |
440 | { | |
441 | if (cap_vcpu_resets) { | |
442 | kvm_s390_reset_vcpu(cpu, KVM_S390_CLEAR_RESET); | |
443 | } else { | |
444 | kvm_s390_reset_vcpu(cpu, KVM_S390_INITIAL_RESET); | |
445 | } | |
446 | } | |
447 | ||
448 | void kvm_s390_reset_vcpu_normal(S390CPU *cpu) | |
449 | { | |
450 | if (cap_vcpu_resets) { | |
451 | kvm_s390_reset_vcpu(cpu, KVM_S390_NORMAL_RESET); | |
70bada03 | 452 | } |
0e60a699 AG |
453 | } |
454 | ||
fdb78ec0 DH |
455 | static int can_sync_regs(CPUState *cs, int regs) |
456 | { | |
457 | return cap_sync_regs && (cs->kvm_run->kvm_valid_regs & regs) == regs; | |
458 | } | |
459 | ||
20d695a9 | 460 | int kvm_arch_put_registers(CPUState *cs, int level) |
0e60a699 | 461 | { |
20d695a9 AF |
462 | S390CPU *cpu = S390_CPU(cs); |
463 | CPUS390XState *env = &cpu->env; | |
5b08b344 | 464 | struct kvm_sregs sregs; |
0e60a699 | 465 | struct kvm_regs regs; |
e6eef7c2 | 466 | struct kvm_fpu fpu = {}; |
860643bc | 467 | int r; |
0e60a699 AG |
468 | int i; |
469 | ||
5b08b344 | 470 | /* always save the PSW and the GPRS*/ |
f7575c96 AF |
471 | cs->kvm_run->psw_addr = env->psw.addr; |
472 | cs->kvm_run->psw_mask = env->psw.mask; | |
0e60a699 | 473 | |
fdb78ec0 | 474 | if (can_sync_regs(cs, KVM_SYNC_GPRS)) { |
5b08b344 | 475 | for (i = 0; i < 16; i++) { |
f7575c96 AF |
476 | cs->kvm_run->s.regs.gprs[i] = env->regs[i]; |
477 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GPRS; | |
5b08b344 CB |
478 | } |
479 | } else { | |
480 | for (i = 0; i < 16; i++) { | |
481 | regs.gprs[i] = env->regs[i]; | |
482 | } | |
860643bc CB |
483 | r = kvm_vcpu_ioctl(cs, KVM_SET_REGS, ®s); |
484 | if (r < 0) { | |
485 | return r; | |
5b08b344 | 486 | } |
0e60a699 AG |
487 | } |
488 | ||
fcb79802 EF |
489 | if (can_sync_regs(cs, KVM_SYNC_VRS)) { |
490 | for (i = 0; i < 32; i++) { | |
4f83d7d2 DH |
491 | cs->kvm_run->s.regs.vrs[i][0] = env->vregs[i][0]; |
492 | cs->kvm_run->s.regs.vrs[i][1] = env->vregs[i][1]; | |
fcb79802 EF |
493 | } |
494 | cs->kvm_run->s.regs.fpc = env->fpc; | |
495 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_VRS; | |
5ab0e547 DH |
496 | } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) { |
497 | for (i = 0; i < 16; i++) { | |
4f83d7d2 | 498 | cs->kvm_run->s.regs.fprs[i] = *get_freg(env, i); |
5ab0e547 DH |
499 | } |
500 | cs->kvm_run->s.regs.fpc = env->fpc; | |
501 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_FPRS; | |
fcb79802 EF |
502 | } else { |
503 | /* Floating point */ | |
504 | for (i = 0; i < 16; i++) { | |
4f83d7d2 | 505 | fpu.fprs[i] = *get_freg(env, i); |
fcb79802 EF |
506 | } |
507 | fpu.fpc = env->fpc; | |
85ad6230 | 508 | |
fcb79802 EF |
509 | r = kvm_vcpu_ioctl(cs, KVM_SET_FPU, &fpu); |
510 | if (r < 0) { | |
511 | return r; | |
512 | } | |
85ad6230 JH |
513 | } |
514 | ||
44c68de0 DD |
515 | /* Do we need to save more than that? */ |
516 | if (level == KVM_PUT_RUNTIME_STATE) { | |
517 | return 0; | |
518 | } | |
420840e5 | 519 | |
59ac1532 DH |
520 | if (can_sync_regs(cs, KVM_SYNC_ARCH0)) { |
521 | cs->kvm_run->s.regs.cputm = env->cputm; | |
522 | cs->kvm_run->s.regs.ckc = env->ckc; | |
523 | cs->kvm_run->s.regs.todpr = env->todpr; | |
524 | cs->kvm_run->s.regs.gbea = env->gbea; | |
525 | cs->kvm_run->s.regs.pp = env->pp; | |
526 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ARCH0; | |
527 | } else { | |
528 | /* | |
529 | * These ONE_REGS are not protected by a capability. As they are only | |
530 | * necessary for migration we just trace a possible error, but don't | |
531 | * return with an error return code. | |
532 | */ | |
533 | kvm_set_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm); | |
534 | kvm_set_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc); | |
535 | kvm_set_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr); | |
536 | kvm_set_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea); | |
537 | kvm_set_one_reg(cs, KVM_REG_S390_PP, &env->pp); | |
538 | } | |
539 | ||
9700230b FZ |
540 | if (can_sync_regs(cs, KVM_SYNC_RICCB)) { |
541 | memcpy(cs->kvm_run->s.regs.riccb, env->riccb, 64); | |
542 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_RICCB; | |
543 | } | |
544 | ||
59ac1532 DH |
545 | /* pfault parameters */ |
546 | if (can_sync_regs(cs, KVM_SYNC_PFAULT)) { | |
547 | cs->kvm_run->s.regs.pft = env->pfault_token; | |
548 | cs->kvm_run->s.regs.pfs = env->pfault_select; | |
549 | cs->kvm_run->s.regs.pfc = env->pfault_compare; | |
550 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PFAULT; | |
551 | } else if (cap_async_pf) { | |
860643bc CB |
552 | r = kvm_set_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token); |
553 | if (r < 0) { | |
554 | return r; | |
819bd309 | 555 | } |
860643bc CB |
556 | r = kvm_set_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare); |
557 | if (r < 0) { | |
558 | return r; | |
819bd309 | 559 | } |
860643bc CB |
560 | r = kvm_set_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select); |
561 | if (r < 0) { | |
562 | return r; | |
819bd309 DD |
563 | } |
564 | } | |
565 | ||
fdb78ec0 DH |
566 | /* access registers and control registers*/ |
567 | if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) { | |
5b08b344 | 568 | for (i = 0; i < 16; i++) { |
f7575c96 AF |
569 | cs->kvm_run->s.regs.acrs[i] = env->aregs[i]; |
570 | cs->kvm_run->s.regs.crs[i] = env->cregs[i]; | |
5b08b344 | 571 | } |
f7575c96 AF |
572 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ACRS; |
573 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_CRS; | |
5b08b344 CB |
574 | } else { |
575 | for (i = 0; i < 16; i++) { | |
576 | sregs.acrs[i] = env->aregs[i]; | |
577 | sregs.crs[i] = env->cregs[i]; | |
578 | } | |
860643bc CB |
579 | r = kvm_vcpu_ioctl(cs, KVM_SET_SREGS, &sregs); |
580 | if (r < 0) { | |
581 | return r; | |
5b08b344 CB |
582 | } |
583 | } | |
0e60a699 | 584 | |
62deb62d FZ |
585 | if (can_sync_regs(cs, KVM_SYNC_GSCB)) { |
586 | memcpy(cs->kvm_run->s.regs.gscb, env->gscb, 32); | |
587 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_GSCB; | |
588 | } | |
589 | ||
b073c875 CB |
590 | if (can_sync_regs(cs, KVM_SYNC_BPBC)) { |
591 | cs->kvm_run->s.regs.bpbc = env->bpbc; | |
592 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_BPBC; | |
593 | } | |
594 | ||
27e84d4e CB |
595 | if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) { |
596 | cs->kvm_run->s.regs.etoken = env->etoken; | |
597 | cs->kvm_run->s.regs.etoken_extension = env->etoken_extension; | |
598 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_ETOKEN; | |
599 | } | |
600 | ||
fabdada9 CW |
601 | if (can_sync_regs(cs, KVM_SYNC_DIAG318)) { |
602 | cs->kvm_run->s.regs.diag318 = env->diag318_info; | |
603 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_DIAG318; | |
604 | } | |
605 | ||
5b08b344 | 606 | /* Finally the prefix */ |
fdb78ec0 | 607 | if (can_sync_regs(cs, KVM_SYNC_PREFIX)) { |
f7575c96 AF |
608 | cs->kvm_run->s.regs.prefix = env->psa; |
609 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_PREFIX; | |
5b08b344 CB |
610 | } else { |
611 | /* prefix is only supported via sync regs */ | |
612 | } | |
613 | return 0; | |
0e60a699 AG |
614 | } |
615 | ||
20d695a9 | 616 | int kvm_arch_get_registers(CPUState *cs) |
420840e5 JH |
617 | { |
618 | S390CPU *cpu = S390_CPU(cs); | |
619 | CPUS390XState *env = &cpu->env; | |
5b08b344 | 620 | struct kvm_sregs sregs; |
0e60a699 | 621 | struct kvm_regs regs; |
85ad6230 | 622 | struct kvm_fpu fpu; |
44c68de0 | 623 | int i, r; |
420840e5 | 624 | |
5b08b344 | 625 | /* get the PSW */ |
f7575c96 AF |
626 | env->psw.addr = cs->kvm_run->psw_addr; |
627 | env->psw.mask = cs->kvm_run->psw_mask; | |
5b08b344 CB |
628 | |
629 | /* the GPRS */ | |
fdb78ec0 | 630 | if (can_sync_regs(cs, KVM_SYNC_GPRS)) { |
5b08b344 | 631 | for (i = 0; i < 16; i++) { |
f7575c96 | 632 | env->regs[i] = cs->kvm_run->s.regs.gprs[i]; |
5b08b344 CB |
633 | } |
634 | } else { | |
44c68de0 DD |
635 | r = kvm_vcpu_ioctl(cs, KVM_GET_REGS, ®s); |
636 | if (r < 0) { | |
637 | return r; | |
5b08b344 CB |
638 | } |
639 | for (i = 0; i < 16; i++) { | |
640 | env->regs[i] = regs.gprs[i]; | |
641 | } | |
0e60a699 AG |
642 | } |
643 | ||
5b08b344 | 644 | /* The ACRS and CRS */ |
fdb78ec0 | 645 | if (can_sync_regs(cs, KVM_SYNC_ACRS | KVM_SYNC_CRS)) { |
5b08b344 | 646 | for (i = 0; i < 16; i++) { |
f7575c96 AF |
647 | env->aregs[i] = cs->kvm_run->s.regs.acrs[i]; |
648 | env->cregs[i] = cs->kvm_run->s.regs.crs[i]; | |
5b08b344 CB |
649 | } |
650 | } else { | |
44c68de0 DD |
651 | r = kvm_vcpu_ioctl(cs, KVM_GET_SREGS, &sregs); |
652 | if (r < 0) { | |
653 | return r; | |
5b08b344 CB |
654 | } |
655 | for (i = 0; i < 16; i++) { | |
656 | env->aregs[i] = sregs.acrs[i]; | |
657 | env->cregs[i] = sregs.crs[i]; | |
658 | } | |
0e60a699 AG |
659 | } |
660 | ||
fcb79802 EF |
661 | /* Floating point and vector registers */ |
662 | if (can_sync_regs(cs, KVM_SYNC_VRS)) { | |
663 | for (i = 0; i < 32; i++) { | |
4f83d7d2 DH |
664 | env->vregs[i][0] = cs->kvm_run->s.regs.vrs[i][0]; |
665 | env->vregs[i][1] = cs->kvm_run->s.regs.vrs[i][1]; | |
fcb79802 EF |
666 | } |
667 | env->fpc = cs->kvm_run->s.regs.fpc; | |
5ab0e547 DH |
668 | } else if (can_sync_regs(cs, KVM_SYNC_FPRS)) { |
669 | for (i = 0; i < 16; i++) { | |
4f83d7d2 | 670 | *get_freg(env, i) = cs->kvm_run->s.regs.fprs[i]; |
5ab0e547 DH |
671 | } |
672 | env->fpc = cs->kvm_run->s.regs.fpc; | |
fcb79802 EF |
673 | } else { |
674 | r = kvm_vcpu_ioctl(cs, KVM_GET_FPU, &fpu); | |
675 | if (r < 0) { | |
676 | return r; | |
677 | } | |
678 | for (i = 0; i < 16; i++) { | |
4f83d7d2 | 679 | *get_freg(env, i) = fpu.fprs[i]; |
fcb79802 EF |
680 | } |
681 | env->fpc = fpu.fpc; | |
85ad6230 | 682 | } |
85ad6230 | 683 | |
44c68de0 | 684 | /* The prefix */ |
fdb78ec0 | 685 | if (can_sync_regs(cs, KVM_SYNC_PREFIX)) { |
f7575c96 | 686 | env->psa = cs->kvm_run->s.regs.prefix; |
5b08b344 | 687 | } |
0e60a699 | 688 | |
59ac1532 DH |
689 | if (can_sync_regs(cs, KVM_SYNC_ARCH0)) { |
690 | env->cputm = cs->kvm_run->s.regs.cputm; | |
691 | env->ckc = cs->kvm_run->s.regs.ckc; | |
692 | env->todpr = cs->kvm_run->s.regs.todpr; | |
693 | env->gbea = cs->kvm_run->s.regs.gbea; | |
694 | env->pp = cs->kvm_run->s.regs.pp; | |
695 | } else { | |
696 | /* | |
697 | * These ONE_REGS are not protected by a capability. As they are only | |
698 | * necessary for migration we just trace a possible error, but don't | |
699 | * return with an error return code. | |
700 | */ | |
701 | kvm_get_one_reg(cs, KVM_REG_S390_CPU_TIMER, &env->cputm); | |
702 | kvm_get_one_reg(cs, KVM_REG_S390_CLOCK_COMP, &env->ckc); | |
703 | kvm_get_one_reg(cs, KVM_REG_S390_TODPR, &env->todpr); | |
704 | kvm_get_one_reg(cs, KVM_REG_S390_GBEA, &env->gbea); | |
705 | kvm_get_one_reg(cs, KVM_REG_S390_PP, &env->pp); | |
706 | } | |
707 | ||
9700230b FZ |
708 | if (can_sync_regs(cs, KVM_SYNC_RICCB)) { |
709 | memcpy(env->riccb, cs->kvm_run->s.regs.riccb, 64); | |
710 | } | |
711 | ||
62deb62d FZ |
712 | if (can_sync_regs(cs, KVM_SYNC_GSCB)) { |
713 | memcpy(env->gscb, cs->kvm_run->s.regs.gscb, 32); | |
714 | } | |
715 | ||
b073c875 CB |
716 | if (can_sync_regs(cs, KVM_SYNC_BPBC)) { |
717 | env->bpbc = cs->kvm_run->s.regs.bpbc; | |
718 | } | |
719 | ||
27e84d4e CB |
720 | if (can_sync_regs(cs, KVM_SYNC_ETOKEN)) { |
721 | env->etoken = cs->kvm_run->s.regs.etoken; | |
722 | env->etoken_extension = cs->kvm_run->s.regs.etoken_extension; | |
723 | } | |
724 | ||
59ac1532 DH |
725 | /* pfault parameters */ |
726 | if (can_sync_regs(cs, KVM_SYNC_PFAULT)) { | |
727 | env->pfault_token = cs->kvm_run->s.regs.pft; | |
728 | env->pfault_select = cs->kvm_run->s.regs.pfs; | |
729 | env->pfault_compare = cs->kvm_run->s.regs.pfc; | |
730 | } else if (cap_async_pf) { | |
860643bc | 731 | r = kvm_get_one_reg(cs, KVM_REG_S390_PFTOKEN, &env->pfault_token); |
819bd309 DD |
732 | if (r < 0) { |
733 | return r; | |
734 | } | |
860643bc | 735 | r = kvm_get_one_reg(cs, KVM_REG_S390_PFCOMPARE, &env->pfault_compare); |
819bd309 DD |
736 | if (r < 0) { |
737 | return r; | |
738 | } | |
860643bc | 739 | r = kvm_get_one_reg(cs, KVM_REG_S390_PFSELECT, &env->pfault_select); |
819bd309 DD |
740 | if (r < 0) { |
741 | return r; | |
742 | } | |
743 | } | |
744 | ||
fabdada9 CW |
745 | if (can_sync_regs(cs, KVM_SYNC_DIAG318)) { |
746 | env->diag318_info = cs->kvm_run->s.regs.diag318; | |
747 | } | |
748 | ||
0e60a699 AG |
749 | return 0; |
750 | } | |
751 | ||
3f9e59bb JH |
752 | int kvm_s390_get_clock(uint8_t *tod_high, uint64_t *tod_low) |
753 | { | |
754 | int r; | |
755 | struct kvm_device_attr attr = { | |
756 | .group = KVM_S390_VM_TOD, | |
757 | .attr = KVM_S390_VM_TOD_LOW, | |
758 | .addr = (uint64_t)tod_low, | |
759 | }; | |
760 | ||
761 | r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr); | |
762 | if (r) { | |
763 | return r; | |
764 | } | |
765 | ||
766 | attr.attr = KVM_S390_VM_TOD_HIGH; | |
767 | attr.addr = (uint64_t)tod_high; | |
768 | return kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr); | |
769 | } | |
770 | ||
7edd4a49 | 771 | int kvm_s390_get_clock_ext(uint8_t *tod_high, uint64_t *tod_low) |
3f9e59bb JH |
772 | { |
773 | int r; | |
7edd4a49 CW |
774 | struct kvm_s390_vm_tod_clock gtod; |
775 | struct kvm_device_attr attr = { | |
776 | .group = KVM_S390_VM_TOD, | |
777 | .attr = KVM_S390_VM_TOD_EXT, | |
778 | .addr = (uint64_t)>od, | |
779 | }; | |
780 | ||
781 | r = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr); | |
782 | *tod_high = gtod.epoch_idx; | |
783 | *tod_low = gtod.tod; | |
784 | ||
785 | return r; | |
786 | } | |
3f9e59bb | 787 | |
4ab6a1fe | 788 | int kvm_s390_set_clock(uint8_t tod_high, uint64_t tod_low) |
7edd4a49 CW |
789 | { |
790 | int r; | |
3f9e59bb JH |
791 | struct kvm_device_attr attr = { |
792 | .group = KVM_S390_VM_TOD, | |
793 | .attr = KVM_S390_VM_TOD_LOW, | |
4ab6a1fe | 794 | .addr = (uint64_t)&tod_low, |
3f9e59bb JH |
795 | }; |
796 | ||
797 | r = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr); | |
798 | if (r) { | |
799 | return r; | |
800 | } | |
801 | ||
802 | attr.attr = KVM_S390_VM_TOD_HIGH; | |
4ab6a1fe | 803 | attr.addr = (uint64_t)&tod_high; |
3f9e59bb JH |
804 | return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr); |
805 | } | |
806 | ||
4ab6a1fe | 807 | int kvm_s390_set_clock_ext(uint8_t tod_high, uint64_t tod_low) |
7edd4a49 CW |
808 | { |
809 | struct kvm_s390_vm_tod_clock gtod = { | |
4ab6a1fe DH |
810 | .epoch_idx = tod_high, |
811 | .tod = tod_low, | |
7edd4a49 CW |
812 | }; |
813 | struct kvm_device_attr attr = { | |
814 | .group = KVM_S390_VM_TOD, | |
815 | .attr = KVM_S390_VM_TOD_EXT, | |
816 | .addr = (uint64_t)>od, | |
817 | }; | |
818 | ||
819 | return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr); | |
820 | } | |
821 | ||
a9bcd1b8 TH |
822 | /** |
823 | * kvm_s390_mem_op: | |
824 | * @addr: the logical start address in guest memory | |
6cb1e49d | 825 | * @ar: the access register number |
a9bcd1b8 | 826 | * @hostbuf: buffer in host memory. NULL = do only checks w/o copying |
67cc32eb | 827 | * @len: length that should be transferred |
a9bcd1b8 | 828 | * @is_write: true = write, false = read |
67cc32eb | 829 | * Returns: 0 on success, non-zero if an exception or error occurred |
a9bcd1b8 TH |
830 | * |
831 | * Use KVM ioctl to read/write from/to guest memory. An access exception | |
832 | * is injected into the vCPU in case of translation errors. | |
833 | */ | |
6cb1e49d AY |
834 | int kvm_s390_mem_op(S390CPU *cpu, vaddr addr, uint8_t ar, void *hostbuf, |
835 | int len, bool is_write) | |
a9bcd1b8 TH |
836 | { |
837 | struct kvm_s390_mem_op mem_op = { | |
838 | .gaddr = addr, | |
839 | .flags = KVM_S390_MEMOP_F_INJECT_EXCEPTION, | |
840 | .size = len, | |
841 | .op = is_write ? KVM_S390_MEMOP_LOGICAL_WRITE | |
842 | : KVM_S390_MEMOP_LOGICAL_READ, | |
843 | .buf = (uint64_t)hostbuf, | |
6cb1e49d | 844 | .ar = ar, |
a9bcd1b8 TH |
845 | }; |
846 | int ret; | |
847 | ||
848 | if (!cap_mem_op) { | |
849 | return -ENOSYS; | |
850 | } | |
851 | if (!hostbuf) { | |
852 | mem_op.flags |= KVM_S390_MEMOP_F_CHECK_ONLY; | |
853 | } | |
854 | ||
855 | ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op); | |
856 | if (ret < 0) { | |
5ab77f9a | 857 | warn_report("KVM_S390_MEM_OP failed: %s", strerror(-ret)); |
a9bcd1b8 TH |
858 | } |
859 | return ret; | |
860 | } | |
861 | ||
1cca8265 JF |
862 | int kvm_s390_mem_op_pv(S390CPU *cpu, uint64_t offset, void *hostbuf, |
863 | int len, bool is_write) | |
864 | { | |
865 | struct kvm_s390_mem_op mem_op = { | |
866 | .sida_offset = offset, | |
867 | .size = len, | |
868 | .op = is_write ? KVM_S390_MEMOP_SIDA_WRITE | |
869 | : KVM_S390_MEMOP_SIDA_READ, | |
870 | .buf = (uint64_t)hostbuf, | |
871 | }; | |
872 | int ret; | |
873 | ||
874 | if (!cap_mem_op || !cap_protected) { | |
875 | return -ENOSYS; | |
876 | } | |
877 | ||
878 | ret = kvm_vcpu_ioctl(CPU(cpu), KVM_S390_MEM_OP, &mem_op); | |
879 | if (ret < 0) { | |
880 | error_report("KVM_S390_MEM_OP failed: %s", strerror(-ret)); | |
881 | abort(); | |
882 | } | |
883 | return ret; | |
884 | } | |
885 | ||
b60fae32 DH |
886 | static uint8_t const *sw_bp_inst; |
887 | static uint8_t sw_bp_ilen; | |
888 | ||
889 | static void determine_sw_breakpoint_instr(void) | |
890 | { | |
891 | /* DIAG 501 is used for sw breakpoints with old kernels */ | |
892 | static const uint8_t diag_501[] = {0x83, 0x24, 0x05, 0x01}; | |
893 | /* Instruction 0x0000 is used for sw breakpoints with recent kernels */ | |
894 | static const uint8_t instr_0x0000[] = {0x00, 0x00}; | |
895 | ||
896 | if (sw_bp_inst) { | |
897 | return; | |
898 | } | |
899 | if (kvm_vm_enable_cap(kvm_state, KVM_CAP_S390_USER_INSTR0, 0)) { | |
900 | sw_bp_inst = diag_501; | |
901 | sw_bp_ilen = sizeof(diag_501); | |
902 | DPRINTF("KVM: will use 4-byte sw breakpoints.\n"); | |
903 | } else { | |
904 | sw_bp_inst = instr_0x0000; | |
905 | sw_bp_ilen = sizeof(instr_0x0000); | |
906 | DPRINTF("KVM: will use 2-byte sw breakpoints.\n"); | |
907 | } | |
908 | } | |
8e4e86af | 909 | |
20d695a9 | 910 | int kvm_arch_insert_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp) |
0e60a699 | 911 | { |
b60fae32 | 912 | determine_sw_breakpoint_instr(); |
0e60a699 | 913 | |
8e4e86af | 914 | if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn, |
b60fae32 DH |
915 | sw_bp_ilen, 0) || |
916 | cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)sw_bp_inst, sw_bp_ilen, 1)) { | |
0e60a699 AG |
917 | return -EINVAL; |
918 | } | |
919 | return 0; | |
920 | } | |
921 | ||
20d695a9 | 922 | int kvm_arch_remove_sw_breakpoint(CPUState *cs, struct kvm_sw_breakpoint *bp) |
0e60a699 | 923 | { |
b60fae32 | 924 | uint8_t t[MAX_ILEN]; |
0e60a699 | 925 | |
b60fae32 | 926 | if (cpu_memory_rw_debug(cs, bp->pc, t, sw_bp_ilen, 0)) { |
0e60a699 | 927 | return -EINVAL; |
b60fae32 | 928 | } else if (memcmp(t, sw_bp_inst, sw_bp_ilen)) { |
0e60a699 | 929 | return -EINVAL; |
8e4e86af | 930 | } else if (cpu_memory_rw_debug(cs, bp->pc, (uint8_t *)&bp->saved_insn, |
b60fae32 | 931 | sw_bp_ilen, 1)) { |
0e60a699 AG |
932 | return -EINVAL; |
933 | } | |
934 | ||
935 | return 0; | |
936 | } | |
937 | ||
770a6379 DH |
938 | static struct kvm_hw_breakpoint *find_hw_breakpoint(target_ulong addr, |
939 | int len, int type) | |
940 | { | |
941 | int n; | |
942 | ||
943 | for (n = 0; n < nb_hw_breakpoints; n++) { | |
944 | if (hw_breakpoints[n].addr == addr && hw_breakpoints[n].type == type && | |
945 | (hw_breakpoints[n].len == len || len == -1)) { | |
946 | return &hw_breakpoints[n]; | |
947 | } | |
948 | } | |
949 | ||
950 | return NULL; | |
951 | } | |
952 | ||
953 | static int insert_hw_breakpoint(target_ulong addr, int len, int type) | |
954 | { | |
955 | int size; | |
956 | ||
957 | if (find_hw_breakpoint(addr, len, type)) { | |
958 | return -EEXIST; | |
959 | } | |
960 | ||
961 | size = (nb_hw_breakpoints + 1) * sizeof(struct kvm_hw_breakpoint); | |
962 | ||
963 | if (!hw_breakpoints) { | |
964 | nb_hw_breakpoints = 0; | |
965 | hw_breakpoints = (struct kvm_hw_breakpoint *)g_try_malloc(size); | |
966 | } else { | |
967 | hw_breakpoints = | |
968 | (struct kvm_hw_breakpoint *)g_try_realloc(hw_breakpoints, size); | |
969 | } | |
970 | ||
971 | if (!hw_breakpoints) { | |
972 | nb_hw_breakpoints = 0; | |
973 | return -ENOMEM; | |
974 | } | |
975 | ||
976 | hw_breakpoints[nb_hw_breakpoints].addr = addr; | |
977 | hw_breakpoints[nb_hw_breakpoints].len = len; | |
978 | hw_breakpoints[nb_hw_breakpoints].type = type; | |
979 | ||
980 | nb_hw_breakpoints++; | |
981 | ||
982 | return 0; | |
983 | } | |
984 | ||
8c012449 DH |
985 | int kvm_arch_insert_hw_breakpoint(target_ulong addr, |
986 | target_ulong len, int type) | |
987 | { | |
770a6379 DH |
988 | switch (type) { |
989 | case GDB_BREAKPOINT_HW: | |
990 | type = KVM_HW_BP; | |
991 | break; | |
992 | case GDB_WATCHPOINT_WRITE: | |
993 | if (len < 1) { | |
994 | return -EINVAL; | |
995 | } | |
996 | type = KVM_HW_WP_WRITE; | |
997 | break; | |
998 | default: | |
999 | return -ENOSYS; | |
1000 | } | |
1001 | return insert_hw_breakpoint(addr, len, type); | |
8c012449 DH |
1002 | } |
1003 | ||
1004 | int kvm_arch_remove_hw_breakpoint(target_ulong addr, | |
1005 | target_ulong len, int type) | |
1006 | { | |
770a6379 DH |
1007 | int size; |
1008 | struct kvm_hw_breakpoint *bp = find_hw_breakpoint(addr, len, type); | |
1009 | ||
1010 | if (bp == NULL) { | |
1011 | return -ENOENT; | |
1012 | } | |
1013 | ||
1014 | nb_hw_breakpoints--; | |
1015 | if (nb_hw_breakpoints > 0) { | |
1016 | /* | |
1017 | * In order to trim the array, move the last element to the position to | |
1018 | * be removed - if necessary. | |
1019 | */ | |
1020 | if (bp != &hw_breakpoints[nb_hw_breakpoints]) { | |
1021 | *bp = hw_breakpoints[nb_hw_breakpoints]; | |
1022 | } | |
1023 | size = nb_hw_breakpoints * sizeof(struct kvm_hw_breakpoint); | |
1024 | hw_breakpoints = | |
1025 | (struct kvm_hw_breakpoint *)g_realloc(hw_breakpoints, size); | |
1026 | } else { | |
1027 | g_free(hw_breakpoints); | |
1028 | hw_breakpoints = NULL; | |
1029 | } | |
1030 | ||
1031 | return 0; | |
8c012449 DH |
1032 | } |
1033 | ||
1034 | void kvm_arch_remove_all_hw_breakpoints(void) | |
1035 | { | |
770a6379 DH |
1036 | nb_hw_breakpoints = 0; |
1037 | g_free(hw_breakpoints); | |
1038 | hw_breakpoints = NULL; | |
8c012449 DH |
1039 | } |
1040 | ||
1041 | void kvm_arch_update_guest_debug(CPUState *cpu, struct kvm_guest_debug *dbg) | |
1042 | { | |
770a6379 DH |
1043 | int i; |
1044 | ||
1045 | if (nb_hw_breakpoints > 0) { | |
1046 | dbg->arch.nr_hw_bp = nb_hw_breakpoints; | |
1047 | dbg->arch.hw_bp = hw_breakpoints; | |
1048 | ||
1049 | for (i = 0; i < nb_hw_breakpoints; ++i) { | |
1050 | hw_breakpoints[i].phys_addr = s390_cpu_get_phys_addr_debug(cpu, | |
1051 | hw_breakpoints[i].addr); | |
1052 | } | |
1053 | dbg->control |= KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_HW_BP; | |
1054 | } else { | |
1055 | dbg->arch.nr_hw_bp = 0; | |
1056 | dbg->arch.hw_bp = NULL; | |
1057 | } | |
8c012449 DH |
1058 | } |
1059 | ||
20d695a9 | 1060 | void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run) |
0e60a699 | 1061 | { |
0e60a699 AG |
1062 | } |
1063 | ||
4c663752 | 1064 | MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run) |
0e60a699 | 1065 | { |
4c663752 | 1066 | return MEMTXATTRS_UNSPECIFIED; |
0e60a699 AG |
1067 | } |
1068 | ||
20d695a9 | 1069 | int kvm_arch_process_async_events(CPUState *cs) |
0af691d7 | 1070 | { |
225dc991 | 1071 | return cs->halted; |
0af691d7 MT |
1072 | } |
1073 | ||
66ad0893 CH |
1074 | static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq *irq, |
1075 | struct kvm_s390_interrupt *interrupt) | |
1076 | { | |
1077 | int r = 0; | |
1078 | ||
1079 | interrupt->type = irq->type; | |
1080 | switch (irq->type) { | |
1081 | case KVM_S390_INT_VIRTIO: | |
1082 | interrupt->parm = irq->u.ext.ext_params; | |
1083 | /* fall through */ | |
1084 | case KVM_S390_INT_PFAULT_INIT: | |
1085 | case KVM_S390_INT_PFAULT_DONE: | |
1086 | interrupt->parm64 = irq->u.ext.ext_params2; | |
1087 | break; | |
1088 | case KVM_S390_PROGRAM_INT: | |
1089 | interrupt->parm = irq->u.pgm.code; | |
1090 | break; | |
1091 | case KVM_S390_SIGP_SET_PREFIX: | |
1092 | interrupt->parm = irq->u.prefix.address; | |
1093 | break; | |
1094 | case KVM_S390_INT_SERVICE: | |
1095 | interrupt->parm = irq->u.ext.ext_params; | |
1096 | break; | |
1097 | case KVM_S390_MCHK: | |
1098 | interrupt->parm = irq->u.mchk.cr14; | |
1099 | interrupt->parm64 = irq->u.mchk.mcic; | |
1100 | break; | |
1101 | case KVM_S390_INT_EXTERNAL_CALL: | |
1102 | interrupt->parm = irq->u.extcall.code; | |
1103 | break; | |
1104 | case KVM_S390_INT_EMERGENCY: | |
1105 | interrupt->parm = irq->u.emerg.code; | |
1106 | break; | |
1107 | case KVM_S390_SIGP_STOP: | |
1108 | case KVM_S390_RESTART: | |
1109 | break; /* These types have no parameters */ | |
1110 | case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX: | |
1111 | interrupt->parm = irq->u.io.subchannel_id << 16; | |
1112 | interrupt->parm |= irq->u.io.subchannel_nr; | |
1113 | interrupt->parm64 = (uint64_t)irq->u.io.io_int_parm << 32; | |
1114 | interrupt->parm64 |= irq->u.io.io_int_word; | |
1115 | break; | |
1116 | default: | |
1117 | r = -EINVAL; | |
1118 | break; | |
1119 | } | |
1120 | return r; | |
1121 | } | |
1122 | ||
1191c949 | 1123 | static void inject_vcpu_irq_legacy(CPUState *cs, struct kvm_s390_irq *irq) |
66ad0893 CH |
1124 | { |
1125 | struct kvm_s390_interrupt kvmint = {}; | |
66ad0893 CH |
1126 | int r; |
1127 | ||
1128 | r = s390_kvm_irq_to_interrupt(irq, &kvmint); | |
1129 | if (r < 0) { | |
1130 | fprintf(stderr, "%s called with bogus interrupt\n", __func__); | |
1131 | exit(1); | |
1132 | } | |
1133 | ||
1134 | r = kvm_vcpu_ioctl(cs, KVM_S390_INTERRUPT, &kvmint); | |
1135 | if (r < 0) { | |
1136 | fprintf(stderr, "KVM failed to inject interrupt\n"); | |
1137 | exit(1); | |
1138 | } | |
1139 | } | |
1140 | ||
1191c949 JF |
1141 | void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq) |
1142 | { | |
1143 | CPUState *cs = CPU(cpu); | |
1144 | int r; | |
1145 | ||
1146 | if (cap_s390_irq) { | |
1147 | r = kvm_vcpu_ioctl(cs, KVM_S390_IRQ, irq); | |
1148 | if (!r) { | |
1149 | return; | |
1150 | } | |
1151 | error_report("KVM failed to inject interrupt %llx", irq->type); | |
1152 | exit(1); | |
1153 | } | |
1154 | ||
1155 | inject_vcpu_irq_legacy(cs, irq); | |
1156 | } | |
1157 | ||
e6505d53 | 1158 | void kvm_s390_floating_interrupt_legacy(struct kvm_s390_irq *irq) |
66ad0893 CH |
1159 | { |
1160 | struct kvm_s390_interrupt kvmint = {}; | |
1161 | int r; | |
1162 | ||
1163 | r = s390_kvm_irq_to_interrupt(irq, &kvmint); | |
1164 | if (r < 0) { | |
1165 | fprintf(stderr, "%s called with bogus interrupt\n", __func__); | |
1166 | exit(1); | |
1167 | } | |
1168 | ||
1169 | r = kvm_vm_ioctl(kvm_state, KVM_S390_INTERRUPT, &kvmint); | |
1170 | if (r < 0) { | |
1171 | fprintf(stderr, "KVM failed to inject interrupt\n"); | |
1172 | exit(1); | |
1173 | } | |
1174 | } | |
1175 | ||
e3cfd926 | 1176 | void kvm_s390_program_interrupt(S390CPU *cpu, uint16_t code) |
0e60a699 | 1177 | { |
de13d216 CH |
1178 | struct kvm_s390_irq irq = { |
1179 | .type = KVM_S390_PROGRAM_INT, | |
1180 | .u.pgm.code = code, | |
1181 | }; | |
52341ed6 DH |
1182 | qemu_log_mask(CPU_LOG_INT, "program interrupt at %#" PRIx64 "\n", |
1183 | cpu->env.psw.addr); | |
de13d216 | 1184 | kvm_s390_vcpu_interrupt(cpu, &irq); |
0e60a699 AG |
1185 | } |
1186 | ||
801cdd35 TH |
1187 | void kvm_s390_access_exception(S390CPU *cpu, uint16_t code, uint64_t te_code) |
1188 | { | |
1189 | struct kvm_s390_irq irq = { | |
1190 | .type = KVM_S390_PROGRAM_INT, | |
1191 | .u.pgm.code = code, | |
1192 | .u.pgm.trans_exc_code = te_code, | |
1193 | .u.pgm.exc_access_id = te_code & 3, | |
1194 | }; | |
1195 | ||
1196 | kvm_s390_vcpu_interrupt(cpu, &irq); | |
1197 | } | |
1198 | ||
15b6c037 | 1199 | static void kvm_sclp_service_call(S390CPU *cpu, struct kvm_run *run, |
bcec36ea | 1200 | uint16_t ipbh0) |
0e60a699 | 1201 | { |
1bc22652 | 1202 | CPUS390XState *env = &cpu->env; |
a0fa2cb8 TH |
1203 | uint64_t sccb; |
1204 | uint32_t code; | |
15b6c037 | 1205 | int r; |
0e60a699 | 1206 | |
0e60a699 AG |
1207 | sccb = env->regs[ipbh0 & 0xf]; |
1208 | code = env->regs[(ipbh0 & 0xf0) >> 4]; | |
1209 | ||
0f73c5b3 JF |
1210 | switch (run->s390_sieic.icptcode) { |
1211 | case ICPT_PV_INSTR_NOTIFICATION: | |
1212 | g_assert(s390_is_pv()); | |
1213 | /* The notification intercepts are currently handled by KVM */ | |
1214 | error_report("unexpected SCLP PV notification"); | |
1215 | exit(1); | |
1216 | break; | |
1217 | case ICPT_PV_INSTR: | |
1218 | g_assert(s390_is_pv()); | |
1219 | sclp_service_call_protected(env, sccb, code); | |
1220 | /* Setting the CC is done by the Ultravisor. */ | |
1221 | break; | |
1222 | case ICPT_INSTRUCTION: | |
1223 | g_assert(!s390_is_pv()); | |
1224 | r = sclp_service_call(env, sccb, code); | |
1225 | if (r < 0) { | |
1226 | kvm_s390_program_interrupt(cpu, -r); | |
1227 | return; | |
1228 | } | |
1229 | setcc(cpu, r); | |
0e60a699 | 1230 | } |
0e60a699 AG |
1231 | } |
1232 | ||
1eecf41b | 1233 | static int handle_b2(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) |
09b99878 | 1234 | { |
09b99878 | 1235 | CPUS390XState *env = &cpu->env; |
1eecf41b FB |
1236 | int rc = 0; |
1237 | uint16_t ipbh0 = (run->s390_sieic.ipb & 0xffff0000) >> 16; | |
3474b679 | 1238 | |
09b99878 | 1239 | switch (ipa1) { |
1eecf41b | 1240 | case PRIV_B2_XSCH: |
1b98fb99 | 1241 | ioinst_handle_xsch(cpu, env->regs[1], RA_IGNORED); |
09b99878 | 1242 | break; |
1eecf41b | 1243 | case PRIV_B2_CSCH: |
1b98fb99 | 1244 | ioinst_handle_csch(cpu, env->regs[1], RA_IGNORED); |
09b99878 | 1245 | break; |
1eecf41b | 1246 | case PRIV_B2_HSCH: |
1b98fb99 | 1247 | ioinst_handle_hsch(cpu, env->regs[1], RA_IGNORED); |
09b99878 | 1248 | break; |
1eecf41b | 1249 | case PRIV_B2_MSCH: |
1b98fb99 | 1250 | ioinst_handle_msch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED); |
09b99878 | 1251 | break; |
1eecf41b | 1252 | case PRIV_B2_SSCH: |
1b98fb99 | 1253 | ioinst_handle_ssch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED); |
09b99878 | 1254 | break; |
1eecf41b | 1255 | case PRIV_B2_STCRW: |
1b98fb99 | 1256 | ioinst_handle_stcrw(cpu, run->s390_sieic.ipb, RA_IGNORED); |
09b99878 | 1257 | break; |
1eecf41b | 1258 | case PRIV_B2_STSCH: |
1b98fb99 | 1259 | ioinst_handle_stsch(cpu, env->regs[1], run->s390_sieic.ipb, RA_IGNORED); |
09b99878 | 1260 | break; |
1eecf41b | 1261 | case PRIV_B2_TSCH: |
09b99878 CH |
1262 | /* We should only get tsch via KVM_EXIT_S390_TSCH. */ |
1263 | fprintf(stderr, "Spurious tsch intercept\n"); | |
1264 | break; | |
1eecf41b | 1265 | case PRIV_B2_CHSC: |
1b98fb99 | 1266 | ioinst_handle_chsc(cpu, run->s390_sieic.ipb, RA_IGNORED); |
09b99878 | 1267 | break; |
1eecf41b | 1268 | case PRIV_B2_TPI: |
09b99878 CH |
1269 | /* This should have been handled by kvm already. */ |
1270 | fprintf(stderr, "Spurious tpi intercept\n"); | |
1271 | break; | |
1eecf41b | 1272 | case PRIV_B2_SCHM: |
5d9bf1c0 | 1273 | ioinst_handle_schm(cpu, env->regs[1], env->regs[2], |
1b98fb99 | 1274 | run->s390_sieic.ipb, RA_IGNORED); |
09b99878 | 1275 | break; |
1eecf41b | 1276 | case PRIV_B2_RSCH: |
1b98fb99 | 1277 | ioinst_handle_rsch(cpu, env->regs[1], RA_IGNORED); |
09b99878 | 1278 | break; |
1eecf41b | 1279 | case PRIV_B2_RCHP: |
1b98fb99 | 1280 | ioinst_handle_rchp(cpu, env->regs[1], RA_IGNORED); |
09b99878 | 1281 | break; |
1eecf41b | 1282 | case PRIV_B2_STCPS: |
09b99878 | 1283 | /* We do not provide this instruction, it is suppressed. */ |
09b99878 | 1284 | break; |
1eecf41b | 1285 | case PRIV_B2_SAL: |
1b98fb99 | 1286 | ioinst_handle_sal(cpu, env->regs[1], RA_IGNORED); |
09b99878 | 1287 | break; |
1eecf41b | 1288 | case PRIV_B2_SIGA: |
c1e8dfb5 | 1289 | /* Not provided, set CC = 3 for subchannel not operational */ |
5d9bf1c0 | 1290 | setcc(cpu, 3); |
09b99878 | 1291 | break; |
1eecf41b | 1292 | case PRIV_B2_SCLP_CALL: |
15b6c037 | 1293 | kvm_sclp_service_call(cpu, run, ipbh0); |
1eecf41b | 1294 | break; |
c1e8dfb5 | 1295 | default: |
1eecf41b FB |
1296 | rc = -1; |
1297 | DPRINTF("KVM: unhandled PRIV: 0xb2%x\n", ipa1); | |
1298 | break; | |
09b99878 CH |
1299 | } |
1300 | ||
1eecf41b | 1301 | return rc; |
09b99878 CH |
1302 | } |
1303 | ||
6cb1e49d AY |
1304 | static uint64_t get_base_disp_rxy(S390CPU *cpu, struct kvm_run *run, |
1305 | uint8_t *ar) | |
863f6f52 FB |
1306 | { |
1307 | CPUS390XState *env = &cpu->env; | |
1308 | uint32_t x2 = (run->s390_sieic.ipa & 0x000f); | |
1309 | uint32_t base2 = run->s390_sieic.ipb >> 28; | |
1310 | uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) + | |
1311 | ((run->s390_sieic.ipb & 0xff00) << 4); | |
1312 | ||
1313 | if (disp2 & 0x80000) { | |
1314 | disp2 += 0xfff00000; | |
1315 | } | |
6cb1e49d AY |
1316 | if (ar) { |
1317 | *ar = base2; | |
1318 | } | |
863f6f52 FB |
1319 | |
1320 | return (base2 ? env->regs[base2] : 0) + | |
1321 | (x2 ? env->regs[x2] : 0) + (long)(int)disp2; | |
1322 | } | |
1323 | ||
6cb1e49d AY |
1324 | static uint64_t get_base_disp_rsy(S390CPU *cpu, struct kvm_run *run, |
1325 | uint8_t *ar) | |
863f6f52 FB |
1326 | { |
1327 | CPUS390XState *env = &cpu->env; | |
1328 | uint32_t base2 = run->s390_sieic.ipb >> 28; | |
1329 | uint32_t disp2 = ((run->s390_sieic.ipb & 0x0fff0000) >> 16) + | |
1330 | ((run->s390_sieic.ipb & 0xff00) << 4); | |
1331 | ||
1332 | if (disp2 & 0x80000) { | |
1333 | disp2 += 0xfff00000; | |
1334 | } | |
6cb1e49d AY |
1335 | if (ar) { |
1336 | *ar = base2; | |
1337 | } | |
863f6f52 FB |
1338 | |
1339 | return (base2 ? env->regs[base2] : 0) + (long)(int)disp2; | |
1340 | } | |
1341 | ||
1342 | static int kvm_clp_service_call(S390CPU *cpu, struct kvm_run *run) | |
1343 | { | |
1344 | uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16; | |
1345 | ||
42f865da | 1346 | if (s390_has_feat(S390_FEAT_ZPCI)) { |
468a9389 | 1347 | return clp_service_call(cpu, r2, RA_IGNORED); |
42f865da CH |
1348 | } else { |
1349 | return -1; | |
1350 | } | |
863f6f52 FB |
1351 | } |
1352 | ||
1353 | static int kvm_pcilg_service_call(S390CPU *cpu, struct kvm_run *run) | |
1354 | { | |
1355 | uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20; | |
1356 | uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16; | |
1357 | ||
42f865da | 1358 | if (s390_has_feat(S390_FEAT_ZPCI)) { |
468a9389 | 1359 | return pcilg_service_call(cpu, r1, r2, RA_IGNORED); |
42f865da CH |
1360 | } else { |
1361 | return -1; | |
1362 | } | |
863f6f52 FB |
1363 | } |
1364 | ||
1365 | static int kvm_pcistg_service_call(S390CPU *cpu, struct kvm_run *run) | |
1366 | { | |
1367 | uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20; | |
1368 | uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16; | |
1369 | ||
42f865da | 1370 | if (s390_has_feat(S390_FEAT_ZPCI)) { |
468a9389 | 1371 | return pcistg_service_call(cpu, r1, r2, RA_IGNORED); |
42f865da CH |
1372 | } else { |
1373 | return -1; | |
1374 | } | |
863f6f52 FB |
1375 | } |
1376 | ||
1377 | static int kvm_stpcifc_service_call(S390CPU *cpu, struct kvm_run *run) | |
1378 | { | |
1379 | uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4; | |
1380 | uint64_t fiba; | |
6cb1e49d | 1381 | uint8_t ar; |
863f6f52 | 1382 | |
42f865da | 1383 | if (s390_has_feat(S390_FEAT_ZPCI)) { |
42f865da | 1384 | fiba = get_base_disp_rxy(cpu, run, &ar); |
863f6f52 | 1385 | |
468a9389 | 1386 | return stpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED); |
42f865da CH |
1387 | } else { |
1388 | return -1; | |
1389 | } | |
863f6f52 FB |
1390 | } |
1391 | ||
1392 | static int kvm_sic_service_call(S390CPU *cpu, struct kvm_run *run) | |
1393 | { | |
2283f4d6 FL |
1394 | CPUS390XState *env = &cpu->env; |
1395 | uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4; | |
1396 | uint8_t r3 = run->s390_sieic.ipa & 0x000f; | |
1397 | uint8_t isc; | |
1398 | uint16_t mode; | |
1399 | int r; | |
1400 | ||
2283f4d6 FL |
1401 | mode = env->regs[r1] & 0xffff; |
1402 | isc = (env->regs[r3] >> 27) & 0x7; | |
1403 | r = css_do_sic(env, isc, mode); | |
1404 | if (r) { | |
e3cfd926 | 1405 | kvm_s390_program_interrupt(cpu, -r); |
2283f4d6 FL |
1406 | } |
1407 | ||
863f6f52 FB |
1408 | return 0; |
1409 | } | |
1410 | ||
1411 | static int kvm_rpcit_service_call(S390CPU *cpu, struct kvm_run *run) | |
1412 | { | |
1413 | uint8_t r1 = (run->s390_sieic.ipb & 0x00f00000) >> 20; | |
1414 | uint8_t r2 = (run->s390_sieic.ipb & 0x000f0000) >> 16; | |
1415 | ||
42f865da | 1416 | if (s390_has_feat(S390_FEAT_ZPCI)) { |
468a9389 | 1417 | return rpcit_service_call(cpu, r1, r2, RA_IGNORED); |
42f865da CH |
1418 | } else { |
1419 | return -1; | |
1420 | } | |
863f6f52 FB |
1421 | } |
1422 | ||
1423 | static int kvm_pcistb_service_call(S390CPU *cpu, struct kvm_run *run) | |
1424 | { | |
1425 | uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4; | |
1426 | uint8_t r3 = run->s390_sieic.ipa & 0x000f; | |
1427 | uint64_t gaddr; | |
6cb1e49d | 1428 | uint8_t ar; |
863f6f52 | 1429 | |
42f865da | 1430 | if (s390_has_feat(S390_FEAT_ZPCI)) { |
42f865da | 1431 | gaddr = get_base_disp_rsy(cpu, run, &ar); |
863f6f52 | 1432 | |
468a9389 | 1433 | return pcistb_service_call(cpu, r1, r3, gaddr, ar, RA_IGNORED); |
42f865da CH |
1434 | } else { |
1435 | return -1; | |
1436 | } | |
863f6f52 FB |
1437 | } |
1438 | ||
1439 | static int kvm_mpcifc_service_call(S390CPU *cpu, struct kvm_run *run) | |
1440 | { | |
1441 | uint8_t r1 = (run->s390_sieic.ipa & 0x00f0) >> 4; | |
1442 | uint64_t fiba; | |
6cb1e49d | 1443 | uint8_t ar; |
863f6f52 | 1444 | |
42f865da | 1445 | if (s390_has_feat(S390_FEAT_ZPCI)) { |
42f865da | 1446 | fiba = get_base_disp_rxy(cpu, run, &ar); |
863f6f52 | 1447 | |
468a9389 | 1448 | return mpcifc_service_call(cpu, r1, fiba, ar, RA_IGNORED); |
42f865da CH |
1449 | } else { |
1450 | return -1; | |
1451 | } | |
863f6f52 FB |
1452 | } |
1453 | ||
1eecf41b | 1454 | static int handle_b9(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) |
0e60a699 AG |
1455 | { |
1456 | int r = 0; | |
0e60a699 | 1457 | |
0e60a699 | 1458 | switch (ipa1) { |
863f6f52 FB |
1459 | case PRIV_B9_CLP: |
1460 | r = kvm_clp_service_call(cpu, run); | |
1461 | break; | |
1462 | case PRIV_B9_PCISTG: | |
1463 | r = kvm_pcistg_service_call(cpu, run); | |
1464 | break; | |
1465 | case PRIV_B9_PCILG: | |
1466 | r = kvm_pcilg_service_call(cpu, run); | |
1467 | break; | |
1468 | case PRIV_B9_RPCIT: | |
1469 | r = kvm_rpcit_service_call(cpu, run); | |
1470 | break; | |
1eecf41b FB |
1471 | case PRIV_B9_EQBS: |
1472 | /* just inject exception */ | |
1473 | r = -1; | |
1474 | break; | |
1475 | default: | |
1476 | r = -1; | |
1477 | DPRINTF("KVM: unhandled PRIV: 0xb9%x\n", ipa1); | |
1478 | break; | |
1479 | } | |
1480 | ||
1481 | return r; | |
1482 | } | |
1483 | ||
80765f07 | 1484 | static int handle_eb(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl) |
1eecf41b FB |
1485 | { |
1486 | int r = 0; | |
1487 | ||
80765f07 | 1488 | switch (ipbl) { |
863f6f52 FB |
1489 | case PRIV_EB_PCISTB: |
1490 | r = kvm_pcistb_service_call(cpu, run); | |
1491 | break; | |
1492 | case PRIV_EB_SIC: | |
1493 | r = kvm_sic_service_call(cpu, run); | |
1494 | break; | |
1eecf41b FB |
1495 | case PRIV_EB_SQBS: |
1496 | /* just inject exception */ | |
1497 | r = -1; | |
1498 | break; | |
1499 | default: | |
1500 | r = -1; | |
80765f07 | 1501 | DPRINTF("KVM: unhandled PRIV: 0xeb%x\n", ipbl); |
1eecf41b | 1502 | break; |
0e60a699 AG |
1503 | } |
1504 | ||
1505 | return r; | |
1506 | } | |
1507 | ||
863f6f52 FB |
1508 | static int handle_e3(S390CPU *cpu, struct kvm_run *run, uint8_t ipbl) |
1509 | { | |
1510 | int r = 0; | |
1511 | ||
1512 | switch (ipbl) { | |
1513 | case PRIV_E3_MPCIFC: | |
1514 | r = kvm_mpcifc_service_call(cpu, run); | |
1515 | break; | |
1516 | case PRIV_E3_STPCIFC: | |
1517 | r = kvm_stpcifc_service_call(cpu, run); | |
1518 | break; | |
1519 | default: | |
1520 | r = -1; | |
1521 | DPRINTF("KVM: unhandled PRIV: 0xe3%x\n", ipbl); | |
1522 | break; | |
1523 | } | |
1524 | ||
1525 | return r; | |
1526 | } | |
1527 | ||
4fd6dd06 | 1528 | static int handle_hypercall(S390CPU *cpu, struct kvm_run *run) |
0e60a699 | 1529 | { |
4fd6dd06 | 1530 | CPUS390XState *env = &cpu->env; |
77319f22 | 1531 | int ret; |
3474b679 | 1532 | |
77319f22 TH |
1533 | ret = s390_virtio_hypercall(env); |
1534 | if (ret == -EINVAL) { | |
e3cfd926 | 1535 | kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION); |
77319f22 TH |
1536 | return 0; |
1537 | } | |
0e60a699 | 1538 | |
77319f22 | 1539 | return ret; |
0e60a699 AG |
1540 | } |
1541 | ||
8fc639af XW |
1542 | static void kvm_handle_diag_288(S390CPU *cpu, struct kvm_run *run) |
1543 | { | |
1544 | uint64_t r1, r3; | |
1545 | int rc; | |
1546 | ||
8fc639af XW |
1547 | r1 = (run->s390_sieic.ipa & 0x00f0) >> 4; |
1548 | r3 = run->s390_sieic.ipa & 0x000f; | |
1549 | rc = handle_diag_288(&cpu->env, r1, r3); | |
1550 | if (rc) { | |
e3cfd926 | 1551 | kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION); |
8fc639af XW |
1552 | } |
1553 | } | |
1554 | ||
268846ba ED |
1555 | static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run) |
1556 | { | |
1557 | uint64_t r1, r3; | |
1558 | ||
20dd25bb | 1559 | r1 = (run->s390_sieic.ipa & 0x00f0) >> 4; |
268846ba | 1560 | r3 = run->s390_sieic.ipa & 0x000f; |
968db419 | 1561 | handle_diag_308(&cpu->env, r1, r3, RA_IGNORED); |
268846ba ED |
1562 | } |
1563 | ||
b30f4dfb DH |
1564 | static int handle_sw_breakpoint(S390CPU *cpu, struct kvm_run *run) |
1565 | { | |
1566 | CPUS390XState *env = &cpu->env; | |
1567 | unsigned long pc; | |
1568 | ||
b60fae32 | 1569 | pc = env->psw.addr - sw_bp_ilen; |
b30f4dfb DH |
1570 | if (kvm_find_sw_breakpoint(CPU(cpu), pc)) { |
1571 | env->psw.addr = pc; | |
1572 | return EXCP_DEBUG; | |
1573 | } | |
1574 | ||
1575 | return -ENOENT; | |
1576 | } | |
1577 | ||
e2c6cd56 CW |
1578 | void kvm_s390_set_diag318(CPUState *cs, uint64_t diag318_info) |
1579 | { | |
1580 | CPUS390XState *env = &S390_CPU(cs)->env; | |
1581 | ||
1582 | /* Feat bit is set only if KVM supports sync for diag318 */ | |
1583 | if (s390_has_feat(S390_FEAT_DIAG_318)) { | |
1584 | env->diag318_info = diag318_info; | |
1585 | cs->kvm_run->s.regs.diag318 = diag318_info; | |
1586 | cs->kvm_run->kvm_dirty_regs |= KVM_SYNC_DIAG318; | |
c35aff18 CW |
1587 | /* |
1588 | * diag 318 info is zeroed during a clear reset and | |
1589 | * diag 308 IPL subcodes. | |
1590 | */ | |
e2c6cd56 CW |
1591 | } |
1592 | } | |
1593 | ||
fabdada9 CW |
1594 | static void handle_diag_318(S390CPU *cpu, struct kvm_run *run) |
1595 | { | |
1596 | uint64_t reg = (run->s390_sieic.ipa & 0x00f0) >> 4; | |
1597 | uint64_t diag318_info = run->s.regs.gprs[reg]; | |
e2c6cd56 | 1598 | CPUState *t; |
fabdada9 CW |
1599 | |
1600 | /* | |
1601 | * DIAG 318 can only be enabled with KVM support. As such, let's | |
1602 | * ensure a guest cannot execute this instruction erroneously. | |
1603 | */ | |
1604 | if (!s390_has_feat(S390_FEAT_DIAG_318)) { | |
1605 | kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION); | |
e2c6cd56 | 1606 | return; |
fabdada9 CW |
1607 | } |
1608 | ||
e2c6cd56 CW |
1609 | CPU_FOREACH(t) { |
1610 | run_on_cpu(t, s390_do_cpu_set_diag318, | |
1611 | RUN_ON_CPU_HOST_ULONG(diag318_info)); | |
fabdada9 CW |
1612 | } |
1613 | } | |
1614 | ||
638129ff CH |
1615 | #define DIAG_KVM_CODE_MASK 0x000000000000ffff |
1616 | ||
1617 | static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb) | |
0e60a699 AG |
1618 | { |
1619 | int r = 0; | |
638129ff CH |
1620 | uint16_t func_code; |
1621 | ||
1622 | /* | |
1623 | * For any diagnose call we support, bits 48-63 of the resulting | |
1624 | * address specify the function code; the remainder is ignored. | |
1625 | */ | |
6cb1e49d | 1626 | func_code = decode_basedisp_rs(&cpu->env, ipb, NULL) & DIAG_KVM_CODE_MASK; |
638129ff | 1627 | switch (func_code) { |
8fc639af XW |
1628 | case DIAG_TIMEREVENT: |
1629 | kvm_handle_diag_288(cpu, run); | |
1630 | break; | |
268846ba ED |
1631 | case DIAG_IPL: |
1632 | kvm_handle_diag_308(cpu, run); | |
1633 | break; | |
fabdada9 CW |
1634 | case DIAG_SET_CONTROL_PROGRAM_CODES: |
1635 | handle_diag_318(cpu, run); | |
1636 | break; | |
39fbc5c6 CB |
1637 | case DIAG_KVM_HYPERCALL: |
1638 | r = handle_hypercall(cpu, run); | |
1639 | break; | |
1640 | case DIAG_KVM_BREAKPOINT: | |
b30f4dfb | 1641 | r = handle_sw_breakpoint(cpu, run); |
39fbc5c6 CB |
1642 | break; |
1643 | default: | |
638129ff | 1644 | DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code); |
e3cfd926 | 1645 | kvm_s390_program_interrupt(cpu, PGM_SPECIFICATION); |
39fbc5c6 | 1646 | break; |
0e60a699 AG |
1647 | } |
1648 | ||
1649 | return r; | |
1650 | } | |
1651 | ||
74b4c74d | 1652 | static int kvm_s390_handle_sigp(S390CPU *cpu, uint8_t ipa1, uint32_t ipb) |
0e60a699 | 1653 | { |
f7575c96 | 1654 | CPUS390XState *env = &cpu->env; |
6eb8f212 DH |
1655 | const uint8_t r1 = ipa1 >> 4; |
1656 | const uint8_t r3 = ipa1 & 0x0f; | |
1657 | int ret; | |
1658 | uint8_t order; | |
0e60a699 | 1659 | |
0e60a699 | 1660 | /* get order code */ |
74b4c74d | 1661 | order = decode_basedisp_rs(env, ipb, NULL) & SIGP_ORDER_MASK; |
0e60a699 | 1662 | |
74b4c74d DH |
1663 | ret = handle_sigp(env, order, r1, r3); |
1664 | setcc(cpu, ret); | |
1665 | return 0; | |
0e60a699 AG |
1666 | } |
1667 | ||
b30f4dfb | 1668 | static int handle_instruction(S390CPU *cpu, struct kvm_run *run) |
0e60a699 AG |
1669 | { |
1670 | unsigned int ipa0 = (run->s390_sieic.ipa & 0xff00); | |
1671 | uint8_t ipa1 = run->s390_sieic.ipa & 0x00ff; | |
d7963c43 | 1672 | int r = -1; |
0e60a699 | 1673 | |
e67137c6 PM |
1674 | DPRINTF("handle_instruction 0x%x 0x%x\n", |
1675 | run->s390_sieic.ipa, run->s390_sieic.ipb); | |
0e60a699 | 1676 | switch (ipa0) { |
09b99878 | 1677 | case IPA0_B2: |
1eecf41b FB |
1678 | r = handle_b2(cpu, run, ipa1); |
1679 | break; | |
09b99878 | 1680 | case IPA0_B9: |
1eecf41b FB |
1681 | r = handle_b9(cpu, run, ipa1); |
1682 | break; | |
09b99878 | 1683 | case IPA0_EB: |
80765f07 | 1684 | r = handle_eb(cpu, run, run->s390_sieic.ipb & 0xff); |
09b99878 | 1685 | break; |
863f6f52 FB |
1686 | case IPA0_E3: |
1687 | r = handle_e3(cpu, run, run->s390_sieic.ipb & 0xff); | |
1688 | break; | |
09b99878 | 1689 | case IPA0_DIAG: |
638129ff | 1690 | r = handle_diag(cpu, run, run->s390_sieic.ipb); |
09b99878 CH |
1691 | break; |
1692 | case IPA0_SIGP: | |
74b4c74d | 1693 | r = kvm_s390_handle_sigp(cpu, ipa1, run->s390_sieic.ipb); |
09b99878 | 1694 | break; |
0e60a699 AG |
1695 | } |
1696 | ||
1697 | if (r < 0) { | |
b30f4dfb | 1698 | r = 0; |
e3cfd926 | 1699 | kvm_s390_program_interrupt(cpu, PGM_OPERATION); |
0e60a699 | 1700 | } |
b30f4dfb DH |
1701 | |
1702 | return r; | |
0e60a699 AG |
1703 | } |
1704 | ||
4ada99ad CB |
1705 | static void unmanageable_intercept(S390CPU *cpu, S390CrashReason reason, |
1706 | int pswoffset) | |
a2689242 TH |
1707 | { |
1708 | CPUState *cs = CPU(cpu); | |
1709 | ||
eb24f7c6 | 1710 | s390_cpu_halt(cpu); |
4ada99ad CB |
1711 | cpu->env.crash_reason = reason; |
1712 | qemu_system_guest_panicked(cpu_get_crash_info(cs)); | |
a2689242 TH |
1713 | } |
1714 | ||
409422cd CB |
1715 | /* try to detect pgm check loops */ |
1716 | static int handle_oper_loop(S390CPU *cpu, struct kvm_run *run) | |
1717 | { | |
1718 | CPUState *cs = CPU(cpu); | |
1719 | PSW oldpsw, newpsw; | |
1720 | ||
409422cd CB |
1721 | newpsw.mask = ldq_phys(cs->as, cpu->env.psa + |
1722 | offsetof(LowCore, program_new_psw)); | |
1723 | newpsw.addr = ldq_phys(cs->as, cpu->env.psa + | |
1724 | offsetof(LowCore, program_new_psw) + 8); | |
1725 | oldpsw.mask = run->psw_mask; | |
1726 | oldpsw.addr = run->psw_addr; | |
1727 | /* | |
1728 | * Avoid endless loops of operation exceptions, if the pgm new | |
1729 | * PSW will cause a new operation exception. | |
1730 | * The heuristic checks if the pgm new psw is within 6 bytes before | |
1731 | * the faulting psw address (with same DAT, AS settings) and the | |
1732 | * new psw is not a wait psw and the fault was not triggered by | |
1733 | * problem state. In that case go into crashed state. | |
1734 | */ | |
1735 | ||
1736 | if (oldpsw.addr - newpsw.addr <= 6 && | |
1737 | !(newpsw.mask & PSW_MASK_WAIT) && | |
1738 | !(oldpsw.mask & PSW_MASK_PSTATE) && | |
1739 | (newpsw.mask & PSW_MASK_ASC) == (oldpsw.mask & PSW_MASK_ASC) && | |
1740 | (newpsw.mask & PSW_MASK_DAT) == (oldpsw.mask & PSW_MASK_DAT)) { | |
4ada99ad | 1741 | unmanageable_intercept(cpu, S390_CRASH_REASON_OPINT_LOOP, |
409422cd CB |
1742 | offsetof(LowCore, program_new_psw)); |
1743 | return EXCP_HALTED; | |
1744 | } | |
1745 | return 0; | |
1746 | } | |
1747 | ||
1bc22652 | 1748 | static int handle_intercept(S390CPU *cpu) |
0e60a699 | 1749 | { |
f7575c96 AF |
1750 | CPUState *cs = CPU(cpu); |
1751 | struct kvm_run *run = cs->kvm_run; | |
0e60a699 AG |
1752 | int icpt_code = run->s390_sieic.icptcode; |
1753 | int r = 0; | |
1754 | ||
39d5d140 | 1755 | DPRINTF("intercept: 0x%x (at 0x%lx)\n", icpt_code, (long)run->psw_addr); |
0e60a699 AG |
1756 | switch (icpt_code) { |
1757 | case ICPT_INSTRUCTION: | |
2585e507 JF |
1758 | case ICPT_PV_INSTR: |
1759 | case ICPT_PV_INSTR_NOTIFICATION: | |
b30f4dfb | 1760 | r = handle_instruction(cpu, run); |
0e60a699 | 1761 | break; |
6449a41a | 1762 | case ICPT_PROGRAM: |
4ada99ad | 1763 | unmanageable_intercept(cpu, S390_CRASH_REASON_PGMINT_LOOP, |
6449a41a TH |
1764 | offsetof(LowCore, program_new_psw)); |
1765 | r = EXCP_HALTED; | |
1766 | break; | |
a2689242 | 1767 | case ICPT_EXT_INT: |
4ada99ad | 1768 | unmanageable_intercept(cpu, S390_CRASH_REASON_EXTINT_LOOP, |
a2689242 TH |
1769 | offsetof(LowCore, external_new_psw)); |
1770 | r = EXCP_HALTED; | |
1771 | break; | |
0e60a699 | 1772 | case ICPT_WAITPSW: |
08eb8c85 | 1773 | /* disabled wait, since enabled wait is handled in kernel */ |
83f7f329 | 1774 | s390_handle_wait(cpu); |
eca3ed03 CB |
1775 | r = EXCP_HALTED; |
1776 | break; | |
854e42f3 | 1777 | case ICPT_CPU_STOP: |
3047f8b5 | 1778 | do_stop_interrupt(&cpu->env); |
854e42f3 | 1779 | r = EXCP_HALTED; |
0e60a699 | 1780 | break; |
b60fae32 | 1781 | case ICPT_OPEREXC: |
409422cd | 1782 | /* check for break points */ |
b60fae32 DH |
1783 | r = handle_sw_breakpoint(cpu, run); |
1784 | if (r == -ENOENT) { | |
409422cd CB |
1785 | /* Then check for potential pgm check loops */ |
1786 | r = handle_oper_loop(cpu, run); | |
1787 | if (r == 0) { | |
e3cfd926 | 1788 | kvm_s390_program_interrupt(cpu, PGM_OPERATION); |
409422cd | 1789 | } |
b60fae32 DH |
1790 | } |
1791 | break; | |
0e60a699 AG |
1792 | case ICPT_SOFT_INTERCEPT: |
1793 | fprintf(stderr, "KVM unimplemented icpt SOFT\n"); | |
1794 | exit(1); | |
1795 | break; | |
0e60a699 AG |
1796 | case ICPT_IO: |
1797 | fprintf(stderr, "KVM unimplemented icpt IO\n"); | |
1798 | exit(1); | |
1799 | break; | |
1800 | default: | |
1801 | fprintf(stderr, "Unknown intercept code: %d\n", icpt_code); | |
1802 | exit(1); | |
1803 | break; | |
1804 | } | |
1805 | ||
1806 | return r; | |
1807 | } | |
1808 | ||
09b99878 CH |
1809 | static int handle_tsch(S390CPU *cpu) |
1810 | { | |
09b99878 CH |
1811 | CPUState *cs = CPU(cpu); |
1812 | struct kvm_run *run = cs->kvm_run; | |
1813 | int ret; | |
1814 | ||
1b98fb99 DH |
1815 | ret = ioinst_handle_tsch(cpu, cpu->env.regs[1], run->s390_tsch.ipb, |
1816 | RA_IGNORED); | |
653b0809 | 1817 | if (ret < 0) { |
09b99878 CH |
1818 | /* |
1819 | * Failure. | |
1820 | * If an I/O interrupt had been dequeued, we have to reinject it. | |
1821 | */ | |
1822 | if (run->s390_tsch.dequeued) { | |
e6505d53 DH |
1823 | s390_io_interrupt(run->s390_tsch.subchannel_id, |
1824 | run->s390_tsch.subchannel_nr, | |
1825 | run->s390_tsch.io_int_parm, | |
1826 | run->s390_tsch.io_int_word); | |
09b99878 CH |
1827 | } |
1828 | ret = 0; | |
1829 | } | |
1830 | return ret; | |
1831 | } | |
1832 | ||
6cb1e49d | 1833 | static void insert_stsi_3_2_2(S390CPU *cpu, __u64 addr, uint8_t ar) |
f07177a5 | 1834 | { |
edd075ae JF |
1835 | const MachineState *ms = MACHINE(qdev_get_machine()); |
1836 | uint16_t conf_cpus = 0, reserved_cpus = 0; | |
4d1369ef | 1837 | SysIB_322 sysib; |
edd075ae | 1838 | int del, i; |
f07177a5 | 1839 | |
7c713b8a JF |
1840 | if (s390_is_pv()) { |
1841 | s390_cpu_pv_mem_read(cpu, 0, &sysib, sizeof(sysib)); | |
1842 | } else if (s390_cpu_virt_mem_read(cpu, addr, ar, &sysib, sizeof(sysib))) { | |
f07177a5 ET |
1843 | return; |
1844 | } | |
1845 | /* Shift the stack of Extended Names to prepare for our own data */ | |
1846 | memmove(&sysib.ext_names[1], &sysib.ext_names[0], | |
1847 | sizeof(sysib.ext_names[0]) * (sysib.count - 1)); | |
1848 | /* First virt level, that doesn't provide Ext Names delimits stack. It is | |
1849 | * assumed it's not capable of managing Extended Names for lower levels. | |
1850 | */ | |
1851 | for (del = 1; del < sysib.count; del++) { | |
1852 | if (!sysib.vm[del].ext_name_encoding || !sysib.ext_names[del][0]) { | |
1853 | break; | |
1854 | } | |
1855 | } | |
1856 | if (del < sysib.count) { | |
1857 | memset(sysib.ext_names[del], 0, | |
1858 | sizeof(sysib.ext_names[0]) * (sysib.count - del)); | |
1859 | } | |
edd075ae JF |
1860 | |
1861 | /* count the cpus and split them into configured and reserved ones */ | |
1862 | for (i = 0; i < ms->possible_cpus->len; i++) { | |
1863 | if (ms->possible_cpus->cpus[i].cpu) { | |
1864 | conf_cpus++; | |
1865 | } else { | |
1866 | reserved_cpus++; | |
1867 | } | |
1868 | } | |
1869 | sysib.vm[0].total_cpus = conf_cpus + reserved_cpus; | |
1870 | sysib.vm[0].conf_cpus = conf_cpus; | |
1871 | sysib.vm[0].reserved_cpus = reserved_cpus; | |
1872 | ||
f07177a5 ET |
1873 | /* Insert short machine name in EBCDIC, padded with blanks */ |
1874 | if (qemu_name) { | |
1875 | memset(sysib.vm[0].name, 0x40, sizeof(sysib.vm[0].name)); | |
1876 | ebcdic_put(sysib.vm[0].name, qemu_name, MIN(sizeof(sysib.vm[0].name), | |
1877 | strlen(qemu_name))); | |
1878 | } | |
1879 | sysib.vm[0].ext_name_encoding = 2; /* 2 = UTF-8 */ | |
f07177a5 ET |
1880 | /* If hypervisor specifies zero Extended Name in STSI322 SYSIB, it's |
1881 | * considered by s390 as not capable of providing any Extended Name. | |
1882 | * Therefore if no name was specified on qemu invocation, we go with the | |
1883 | * same "KVMguest" default, which KVM has filled into short name field. | |
1884 | */ | |
e6a80232 MR |
1885 | strpadcpy((char *)sysib.ext_names[0], |
1886 | sizeof(sysib.ext_names[0]), | |
1887 | qemu_name ?: "KVMguest", '\0'); | |
1888 | ||
f07177a5 | 1889 | /* Insert UUID */ |
794afd70 | 1890 | memcpy(sysib.vm[0].uuid, &qemu_uuid, sizeof(sysib.vm[0].uuid)); |
f07177a5 | 1891 | |
7c713b8a JF |
1892 | if (s390_is_pv()) { |
1893 | s390_cpu_pv_mem_write(cpu, 0, &sysib, sizeof(sysib)); | |
1894 | } else { | |
1895 | s390_cpu_virt_mem_write(cpu, addr, ar, &sysib, sizeof(sysib)); | |
1896 | } | |
f07177a5 ET |
1897 | } |
1898 | ||
1899 | static int handle_stsi(S390CPU *cpu) | |
1900 | { | |
1901 | CPUState *cs = CPU(cpu); | |
1902 | struct kvm_run *run = cs->kvm_run; | |
1903 | ||
1904 | switch (run->s390_stsi.fc) { | |
1905 | case 3: | |
1906 | if (run->s390_stsi.sel1 != 2 || run->s390_stsi.sel2 != 2) { | |
1907 | return 0; | |
1908 | } | |
1909 | /* Only sysib 3.2.2 needs post-handling for now. */ | |
6cb1e49d | 1910 | insert_stsi_3_2_2(cpu, run->s390_stsi.addr, run->s390_stsi.ar); |
f07177a5 ET |
1911 | return 0; |
1912 | default: | |
1913 | return 0; | |
1914 | } | |
1915 | } | |
1916 | ||
8c012449 DH |
1917 | static int kvm_arch_handle_debug_exit(S390CPU *cpu) |
1918 | { | |
770a6379 DH |
1919 | CPUState *cs = CPU(cpu); |
1920 | struct kvm_run *run = cs->kvm_run; | |
1921 | ||
1922 | int ret = 0; | |
1923 | struct kvm_debug_exit_arch *arch_info = &run->debug.arch; | |
1924 | ||
1925 | switch (arch_info->type) { | |
1926 | case KVM_HW_WP_WRITE: | |
1927 | if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) { | |
1928 | cs->watchpoint_hit = &hw_watchpoint; | |
1929 | hw_watchpoint.vaddr = arch_info->addr; | |
1930 | hw_watchpoint.flags = BP_MEM_WRITE; | |
1931 | ret = EXCP_DEBUG; | |
1932 | } | |
1933 | break; | |
1934 | case KVM_HW_BP: | |
1935 | if (find_hw_breakpoint(arch_info->addr, -1, arch_info->type)) { | |
1936 | ret = EXCP_DEBUG; | |
1937 | } | |
1938 | break; | |
1939 | case KVM_SINGLESTEP: | |
1940 | if (cs->singlestep_enabled) { | |
1941 | ret = EXCP_DEBUG; | |
1942 | } | |
1943 | break; | |
1944 | default: | |
1945 | ret = -ENOSYS; | |
1946 | } | |
1947 | ||
1948 | return ret; | |
8c012449 DH |
1949 | } |
1950 | ||
20d695a9 | 1951 | int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run) |
0e60a699 | 1952 | { |
20d695a9 | 1953 | S390CPU *cpu = S390_CPU(cs); |
0e60a699 AG |
1954 | int ret = 0; |
1955 | ||
4b8523ee JK |
1956 | qemu_mutex_lock_iothread(); |
1957 | ||
e7c32461 | 1958 | kvm_cpu_synchronize_state(cs); |
eac53ac5 | 1959 | |
0e60a699 AG |
1960 | switch (run->exit_reason) { |
1961 | case KVM_EXIT_S390_SIEIC: | |
1bc22652 | 1962 | ret = handle_intercept(cpu); |
0e60a699 AG |
1963 | break; |
1964 | case KVM_EXIT_S390_RESET: | |
a30fb811 | 1965 | s390_ipl_reset_request(cs, S390_RESET_REIPL); |
0e60a699 | 1966 | break; |
09b99878 CH |
1967 | case KVM_EXIT_S390_TSCH: |
1968 | ret = handle_tsch(cpu); | |
1969 | break; | |
f07177a5 ET |
1970 | case KVM_EXIT_S390_STSI: |
1971 | ret = handle_stsi(cpu); | |
1972 | break; | |
8c012449 DH |
1973 | case KVM_EXIT_DEBUG: |
1974 | ret = kvm_arch_handle_debug_exit(cpu); | |
1975 | break; | |
0e60a699 AG |
1976 | default: |
1977 | fprintf(stderr, "Unknown KVM exit: %d\n", run->exit_reason); | |
1978 | break; | |
1979 | } | |
4b8523ee | 1980 | qemu_mutex_unlock_iothread(); |
0e60a699 | 1981 | |
bb4ea393 JK |
1982 | if (ret == 0) { |
1983 | ret = EXCP_INTERRUPT; | |
bb4ea393 | 1984 | } |
0e60a699 AG |
1985 | return ret; |
1986 | } | |
4513d923 | 1987 | |
20d695a9 | 1988 | bool kvm_arch_stop_on_emulation_error(CPUState *cpu) |
4513d923 GN |
1989 | { |
1990 | return true; | |
1991 | } | |
a1b87fe0 | 1992 | |
09b99878 CH |
1993 | void kvm_s390_enable_css_support(S390CPU *cpu) |
1994 | { | |
09b99878 CH |
1995 | int r; |
1996 | ||
1997 | /* Activate host kernel channel subsystem support. */ | |
e080f0fd | 1998 | r = kvm_vcpu_enable_cap(CPU(cpu), KVM_CAP_S390_CSS_SUPPORT, 0); |
09b99878 CH |
1999 | assert(r == 0); |
2000 | } | |
48475e14 AK |
2001 | |
2002 | void kvm_arch_init_irq_routing(KVMState *s) | |
2003 | { | |
d426d9fb CH |
2004 | /* |
2005 | * Note that while irqchip capabilities generally imply that cpustates | |
2006 | * are handled in-kernel, it is not true for s390 (yet); therefore, we | |
2007 | * have to override the common code kvm_halt_in_kernel_allowed setting. | |
2008 | */ | |
2009 | if (kvm_check_extension(s, KVM_CAP_IRQ_ROUTING)) { | |
d426d9fb CH |
2010 | kvm_gsi_routing_allowed = true; |
2011 | kvm_halt_in_kernel_allowed = false; | |
2012 | } | |
48475e14 | 2013 | } |
b4436a0b | 2014 | |
cc3ac9c4 CH |
2015 | int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch, |
2016 | int vq, bool assign) | |
b4436a0b CH |
2017 | { |
2018 | struct kvm_ioeventfd kick = { | |
2019 | .flags = KVM_IOEVENTFD_FLAG_VIRTIO_CCW_NOTIFY | | |
2020 | KVM_IOEVENTFD_FLAG_DATAMATCH, | |
cc3ac9c4 | 2021 | .fd = event_notifier_get_fd(notifier), |
b4436a0b CH |
2022 | .datamatch = vq, |
2023 | .addr = sch, | |
2024 | .len = 8, | |
2025 | }; | |
747c432f CH |
2026 | trace_kvm_assign_subch_ioeventfd(kick.fd, kick.addr, assign, |
2027 | kick.datamatch); | |
b4436a0b CH |
2028 | if (!kvm_check_extension(kvm_state, KVM_CAP_IOEVENTFD)) { |
2029 | return -ENOSYS; | |
2030 | } | |
2031 | if (!assign) { | |
2032 | kick.flags |= KVM_IOEVENTFD_FLAG_DEASSIGN; | |
2033 | } | |
2034 | return kvm_vm_ioctl(kvm_state, KVM_IOEVENTFD, &kick); | |
2035 | } | |
1def6656 | 2036 | |
9700230b FZ |
2037 | int kvm_s390_get_ri(void) |
2038 | { | |
2039 | return cap_ri; | |
2040 | } | |
2041 | ||
c9e659c9 DH |
2042 | int kvm_s390_set_cpu_state(S390CPU *cpu, uint8_t cpu_state) |
2043 | { | |
2044 | struct kvm_mp_state mp_state = {}; | |
2045 | int ret; | |
2046 | ||
2047 | /* the kvm part might not have been initialized yet */ | |
2048 | if (CPU(cpu)->kvm_state == NULL) { | |
2049 | return 0; | |
2050 | } | |
2051 | ||
2052 | switch (cpu_state) { | |
9d0306df | 2053 | case S390_CPU_STATE_STOPPED: |
c9e659c9 DH |
2054 | mp_state.mp_state = KVM_MP_STATE_STOPPED; |
2055 | break; | |
9d0306df | 2056 | case S390_CPU_STATE_CHECK_STOP: |
c9e659c9 DH |
2057 | mp_state.mp_state = KVM_MP_STATE_CHECK_STOP; |
2058 | break; | |
9d0306df | 2059 | case S390_CPU_STATE_OPERATING: |
c9e659c9 DH |
2060 | mp_state.mp_state = KVM_MP_STATE_OPERATING; |
2061 | break; | |
9d0306df | 2062 | case S390_CPU_STATE_LOAD: |
c9e659c9 DH |
2063 | mp_state.mp_state = KVM_MP_STATE_LOAD; |
2064 | break; | |
2065 | default: | |
2066 | error_report("Requested CPU state is not a valid S390 CPU state: %u", | |
2067 | cpu_state); | |
2068 | exit(1); | |
2069 | } | |
2070 | ||
2071 | ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MP_STATE, &mp_state); | |
2072 | if (ret) { | |
2073 | trace_kvm_failed_cpu_state_set(CPU(cpu)->cpu_index, cpu_state, | |
2074 | strerror(-ret)); | |
2075 | } | |
2076 | ||
2077 | return ret; | |
2078 | } | |
9e03a040 | 2079 | |
3cda44f7 JF |
2080 | void kvm_s390_vcpu_interrupt_pre_save(S390CPU *cpu) |
2081 | { | |
ae71ed86 | 2082 | unsigned int max_cpus = MACHINE(qdev_get_machine())->smp.max_cpus; |
39b28b26 CB |
2083 | struct kvm_s390_irq_state irq_state = { |
2084 | .buf = (uint64_t) cpu->irqstate, | |
ae71ed86 | 2085 | .len = VCPU_IRQ_BUF_SIZE(max_cpus), |
39b28b26 | 2086 | }; |
3cda44f7 JF |
2087 | CPUState *cs = CPU(cpu); |
2088 | int32_t bytes; | |
2089 | ||
2090 | if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) { | |
2091 | return; | |
2092 | } | |
2093 | ||
3cda44f7 JF |
2094 | bytes = kvm_vcpu_ioctl(cs, KVM_S390_GET_IRQ_STATE, &irq_state); |
2095 | if (bytes < 0) { | |
2096 | cpu->irqstate_saved_size = 0; | |
2097 | error_report("Migration of interrupt state failed"); | |
2098 | return; | |
2099 | } | |
2100 | ||
2101 | cpu->irqstate_saved_size = bytes; | |
2102 | } | |
2103 | ||
2104 | int kvm_s390_vcpu_interrupt_post_load(S390CPU *cpu) | |
2105 | { | |
2106 | CPUState *cs = CPU(cpu); | |
39b28b26 CB |
2107 | struct kvm_s390_irq_state irq_state = { |
2108 | .buf = (uint64_t) cpu->irqstate, | |
2109 | .len = cpu->irqstate_saved_size, | |
2110 | }; | |
3cda44f7 JF |
2111 | int r; |
2112 | ||
b853d4cb SS |
2113 | if (cpu->irqstate_saved_size == 0) { |
2114 | return 0; | |
2115 | } | |
2116 | ||
3cda44f7 JF |
2117 | if (!kvm_check_extension(kvm_state, KVM_CAP_S390_IRQ_STATE)) { |
2118 | return -ENOSYS; | |
2119 | } | |
2120 | ||
3cda44f7 JF |
2121 | r = kvm_vcpu_ioctl(cs, KVM_S390_SET_IRQ_STATE, &irq_state); |
2122 | if (r) { | |
2123 | error_report("Setting interrupt state failed %d", r); | |
2124 | } | |
2125 | return r; | |
2126 | } | |
2127 | ||
9e03a040 | 2128 | int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route, |
dc9f06ca | 2129 | uint64_t address, uint32_t data, PCIDevice *dev) |
9e03a040 FB |
2130 | { |
2131 | S390PCIBusDevice *pbdev; | |
9e03a040 FB |
2132 | uint32_t vec = data & ZPCI_MSI_VEC_MASK; |
2133 | ||
ceb7054f YMZ |
2134 | if (!dev) { |
2135 | DPRINTF("add_msi_route no pci device\n"); | |
2136 | return -ENODEV; | |
2137 | } | |
2138 | ||
2139 | pbdev = s390_pci_find_dev_by_target(s390_get_phb(), DEVICE(dev)->id); | |
9e03a040 | 2140 | if (!pbdev) { |
ceb7054f | 2141 | DPRINTF("add_msi_route no zpci device\n"); |
9e03a040 FB |
2142 | return -ENODEV; |
2143 | } | |
2144 | ||
9e03a040 FB |
2145 | route->type = KVM_IRQ_ROUTING_S390_ADAPTER; |
2146 | route->flags = 0; | |
2147 | route->u.adapter.summary_addr = pbdev->routes.adapter.summary_addr; | |
2148 | route->u.adapter.ind_addr = pbdev->routes.adapter.ind_addr; | |
2149 | route->u.adapter.summary_offset = pbdev->routes.adapter.summary_offset; | |
01c36195 | 2150 | route->u.adapter.ind_offset = pbdev->routes.adapter.ind_offset + vec; |
9e03a040 FB |
2151 | route->u.adapter.adapter_id = pbdev->routes.adapter.adapter_id; |
2152 | return 0; | |
2153 | } | |
1850b6b7 | 2154 | |
38d87493 PX |
2155 | int kvm_arch_add_msi_route_post(struct kvm_irq_routing_entry *route, |
2156 | int vector, PCIDevice *dev) | |
2157 | { | |
2158 | return 0; | |
2159 | } | |
2160 | ||
2161 | int kvm_arch_release_virq_post(int virq) | |
2162 | { | |
2163 | return 0; | |
2164 | } | |
2165 | ||
1850b6b7 EA |
2166 | int kvm_arch_msi_data_to_gsi(uint32_t data) |
2167 | { | |
2168 | abort(); | |
2169 | } | |
3b84c25c | 2170 | |
3b84c25c DH |
2171 | static int query_cpu_subfunc(S390FeatBitmap features) |
2172 | { | |
f555638c | 2173 | struct kvm_s390_vm_cpu_subfunc prop = {}; |
3b84c25c DH |
2174 | struct kvm_device_attr attr = { |
2175 | .group = KVM_S390_VM_CPU_MODEL, | |
2176 | .attr = KVM_S390_VM_CPU_MACHINE_SUBFUNC, | |
2177 | .addr = (uint64_t) &prop, | |
2178 | }; | |
2179 | int rc; | |
2180 | ||
2181 | rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr); | |
2182 | if (rc) { | |
2183 | return rc; | |
2184 | } | |
2185 | ||
2186 | /* | |
2187 | * We're going to add all subfunctions now, if the corresponding feature | |
2188 | * is available that unlocks the query functions. | |
2189 | */ | |
2190 | s390_add_from_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo); | |
2191 | if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) { | |
2192 | s390_add_from_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff); | |
2193 | } | |
2194 | if (test_bit(S390_FEAT_MSA, features)) { | |
2195 | s390_add_from_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac); | |
2196 | s390_add_from_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc); | |
2197 | s390_add_from_feat_block(features, S390_FEAT_TYPE_KM, prop.km); | |
2198 | s390_add_from_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd); | |
2199 | s390_add_from_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd); | |
2200 | } | |
2201 | if (test_bit(S390_FEAT_MSA_EXT_3, features)) { | |
2202 | s390_add_from_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo); | |
2203 | } | |
2204 | if (test_bit(S390_FEAT_MSA_EXT_4, features)) { | |
2205 | s390_add_from_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr); | |
2206 | s390_add_from_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf); | |
2207 | s390_add_from_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo); | |
2208 | s390_add_from_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc); | |
2209 | } | |
2210 | if (test_bit(S390_FEAT_MSA_EXT_5, features)) { | |
2211 | s390_add_from_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno); | |
2212 | } | |
6da5c593 JH |
2213 | if (test_bit(S390_FEAT_MSA_EXT_8, features)) { |
2214 | s390_add_from_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma); | |
2215 | } | |
5dacbe23 CB |
2216 | if (test_bit(S390_FEAT_MSA_EXT_9, features)) { |
2217 | s390_add_from_feat_block(features, S390_FEAT_TYPE_KDSA, prop.kdsa); | |
2218 | } | |
d220fabf CB |
2219 | if (test_bit(S390_FEAT_ESORT_BASE, features)) { |
2220 | s390_add_from_feat_block(features, S390_FEAT_TYPE_SORTL, prop.sortl); | |
2221 | } | |
afc7b866 CB |
2222 | if (test_bit(S390_FEAT_DEFLATE_BASE, features)) { |
2223 | s390_add_from_feat_block(features, S390_FEAT_TYPE_DFLTCC, prop.dfltcc); | |
2224 | } | |
3b84c25c DH |
2225 | return 0; |
2226 | } | |
2227 | ||
2228 | static int configure_cpu_subfunc(const S390FeatBitmap features) | |
2229 | { | |
2230 | struct kvm_s390_vm_cpu_subfunc prop = {}; | |
2231 | struct kvm_device_attr attr = { | |
2232 | .group = KVM_S390_VM_CPU_MODEL, | |
2233 | .attr = KVM_S390_VM_CPU_PROCESSOR_SUBFUNC, | |
2234 | .addr = (uint64_t) &prop, | |
2235 | }; | |
2236 | ||
2237 | if (!kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL, | |
2238 | KVM_S390_VM_CPU_PROCESSOR_SUBFUNC)) { | |
2239 | /* hardware support might be missing, IBC will handle most of this */ | |
2240 | return 0; | |
2241 | } | |
2242 | ||
2243 | s390_fill_feat_block(features, S390_FEAT_TYPE_PLO, prop.plo); | |
2244 | if (test_bit(S390_FEAT_TOD_CLOCK_STEERING, features)) { | |
2245 | s390_fill_feat_block(features, S390_FEAT_TYPE_PTFF, prop.ptff); | |
3b84c25c DH |
2246 | } |
2247 | if (test_bit(S390_FEAT_MSA, features)) { | |
2248 | s390_fill_feat_block(features, S390_FEAT_TYPE_KMAC, prop.kmac); | |
3b84c25c | 2249 | s390_fill_feat_block(features, S390_FEAT_TYPE_KMC, prop.kmc); |
3b84c25c | 2250 | s390_fill_feat_block(features, S390_FEAT_TYPE_KM, prop.km); |
3b84c25c | 2251 | s390_fill_feat_block(features, S390_FEAT_TYPE_KIMD, prop.kimd); |
3b84c25c | 2252 | s390_fill_feat_block(features, S390_FEAT_TYPE_KLMD, prop.klmd); |
3b84c25c DH |
2253 | } |
2254 | if (test_bit(S390_FEAT_MSA_EXT_3, features)) { | |
2255 | s390_fill_feat_block(features, S390_FEAT_TYPE_PCKMO, prop.pckmo); | |
3b84c25c DH |
2256 | } |
2257 | if (test_bit(S390_FEAT_MSA_EXT_4, features)) { | |
2258 | s390_fill_feat_block(features, S390_FEAT_TYPE_KMCTR, prop.kmctr); | |
3b84c25c | 2259 | s390_fill_feat_block(features, S390_FEAT_TYPE_KMF, prop.kmf); |
3b84c25c | 2260 | s390_fill_feat_block(features, S390_FEAT_TYPE_KMO, prop.kmo); |
3b84c25c | 2261 | s390_fill_feat_block(features, S390_FEAT_TYPE_PCC, prop.pcc); |
3b84c25c DH |
2262 | } |
2263 | if (test_bit(S390_FEAT_MSA_EXT_5, features)) { | |
2264 | s390_fill_feat_block(features, S390_FEAT_TYPE_PPNO, prop.ppno); | |
3b84c25c | 2265 | } |
6da5c593 JH |
2266 | if (test_bit(S390_FEAT_MSA_EXT_8, features)) { |
2267 | s390_fill_feat_block(features, S390_FEAT_TYPE_KMA, prop.kma); | |
6da5c593 | 2268 | } |
5dacbe23 CB |
2269 | if (test_bit(S390_FEAT_MSA_EXT_9, features)) { |
2270 | s390_fill_feat_block(features, S390_FEAT_TYPE_KDSA, prop.kdsa); | |
2271 | } | |
d220fabf CB |
2272 | if (test_bit(S390_FEAT_ESORT_BASE, features)) { |
2273 | s390_fill_feat_block(features, S390_FEAT_TYPE_SORTL, prop.sortl); | |
2274 | } | |
afc7b866 CB |
2275 | if (test_bit(S390_FEAT_DEFLATE_BASE, features)) { |
2276 | s390_fill_feat_block(features, S390_FEAT_TYPE_DFLTCC, prop.dfltcc); | |
2277 | } | |
3b84c25c DH |
2278 | return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr); |
2279 | } | |
2280 | ||
2281 | static int kvm_to_feat[][2] = { | |
2282 | { KVM_S390_VM_CPU_FEAT_ESOP, S390_FEAT_ESOP }, | |
2283 | { KVM_S390_VM_CPU_FEAT_SIEF2, S390_FEAT_SIE_F2 }, | |
2284 | { KVM_S390_VM_CPU_FEAT_64BSCAO , S390_FEAT_SIE_64BSCAO }, | |
2285 | { KVM_S390_VM_CPU_FEAT_SIIF, S390_FEAT_SIE_SIIF }, | |
2286 | { KVM_S390_VM_CPU_FEAT_GPERE, S390_FEAT_SIE_GPERE }, | |
2287 | { KVM_S390_VM_CPU_FEAT_GSLS, S390_FEAT_SIE_GSLS }, | |
2288 | { KVM_S390_VM_CPU_FEAT_IB, S390_FEAT_SIE_IB }, | |
2289 | { KVM_S390_VM_CPU_FEAT_CEI, S390_FEAT_SIE_CEI }, | |
2290 | { KVM_S390_VM_CPU_FEAT_IBS, S390_FEAT_SIE_IBS }, | |
2291 | { KVM_S390_VM_CPU_FEAT_SKEY, S390_FEAT_SIE_SKEY }, | |
2292 | { KVM_S390_VM_CPU_FEAT_CMMA, S390_FEAT_SIE_CMMA }, | |
2293 | { KVM_S390_VM_CPU_FEAT_PFMFI, S390_FEAT_SIE_PFMFI}, | |
2294 | { KVM_S390_VM_CPU_FEAT_SIGPIF, S390_FEAT_SIE_SIGPIF}, | |
c0a9cd94 | 2295 | { KVM_S390_VM_CPU_FEAT_KSS, S390_FEAT_SIE_KSS}, |
3b84c25c DH |
2296 | }; |
2297 | ||
2298 | static int query_cpu_feat(S390FeatBitmap features) | |
2299 | { | |
f555638c | 2300 | struct kvm_s390_vm_cpu_feat prop = {}; |
3b84c25c DH |
2301 | struct kvm_device_attr attr = { |
2302 | .group = KVM_S390_VM_CPU_MODEL, | |
2303 | .attr = KVM_S390_VM_CPU_MACHINE_FEAT, | |
2304 | .addr = (uint64_t) &prop, | |
2305 | }; | |
2306 | int rc; | |
2307 | int i; | |
2308 | ||
2309 | rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr); | |
2310 | if (rc) { | |
2311 | return rc; | |
2312 | } | |
2313 | ||
2314 | for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) { | |
3d1cfc3c | 2315 | if (test_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat)) { |
3b84c25c DH |
2316 | set_bit(kvm_to_feat[i][1], features); |
2317 | } | |
2318 | } | |
2319 | return 0; | |
2320 | } | |
2321 | ||
2322 | static int configure_cpu_feat(const S390FeatBitmap features) | |
2323 | { | |
2324 | struct kvm_s390_vm_cpu_feat prop = {}; | |
2325 | struct kvm_device_attr attr = { | |
2326 | .group = KVM_S390_VM_CPU_MODEL, | |
2327 | .attr = KVM_S390_VM_CPU_PROCESSOR_FEAT, | |
2328 | .addr = (uint64_t) &prop, | |
2329 | }; | |
2330 | int i; | |
2331 | ||
2332 | for (i = 0; i < ARRAY_SIZE(kvm_to_feat); i++) { | |
2333 | if (test_bit(kvm_to_feat[i][1], features)) { | |
3d1cfc3c | 2334 | set_be_bit(kvm_to_feat[i][0], (uint8_t *) prop.feat); |
3b84c25c DH |
2335 | } |
2336 | } | |
2337 | return kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr); | |
2338 | } | |
2339 | ||
2340 | bool kvm_s390_cpu_models_supported(void) | |
2341 | { | |
e73316d5 | 2342 | if (!cpu_model_allowed()) { |
34821036 DH |
2343 | /* compatibility machines interfere with the cpu model */ |
2344 | return false; | |
2345 | } | |
3b84c25c DH |
2346 | return kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL, |
2347 | KVM_S390_VM_CPU_MACHINE) && | |
2348 | kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL, | |
2349 | KVM_S390_VM_CPU_PROCESSOR) && | |
2350 | kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL, | |
2351 | KVM_S390_VM_CPU_MACHINE_FEAT) && | |
2352 | kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL, | |
2353 | KVM_S390_VM_CPU_PROCESSOR_FEAT) && | |
2354 | kvm_vm_check_attr(kvm_state, KVM_S390_VM_CPU_MODEL, | |
2355 | KVM_S390_VM_CPU_MACHINE_SUBFUNC); | |
2356 | } | |
2357 | ||
2358 | void kvm_s390_get_host_cpu_model(S390CPUModel *model, Error **errp) | |
2359 | { | |
2360 | struct kvm_s390_vm_cpu_machine prop = {}; | |
2361 | struct kvm_device_attr attr = { | |
2362 | .group = KVM_S390_VM_CPU_MODEL, | |
2363 | .attr = KVM_S390_VM_CPU_MACHINE, | |
2364 | .addr = (uint64_t) &prop, | |
2365 | }; | |
2366 | uint16_t unblocked_ibc = 0, cpu_type = 0; | |
2367 | int rc; | |
2368 | ||
2369 | memset(model, 0, sizeof(*model)); | |
2370 | ||
2371 | if (!kvm_s390_cpu_models_supported()) { | |
2372 | error_setg(errp, "KVM doesn't support CPU models"); | |
2373 | return; | |
2374 | } | |
2375 | ||
2376 | /* query the basic cpu model properties */ | |
2377 | rc = kvm_vm_ioctl(kvm_state, KVM_GET_DEVICE_ATTR, &attr); | |
2378 | if (rc) { | |
2379 | error_setg(errp, "KVM: Error querying host CPU model: %d", rc); | |
2380 | return; | |
2381 | } | |
2382 | ||
2383 | cpu_type = cpuid_type(prop.cpuid); | |
2384 | if (has_ibc(prop.ibc)) { | |
2385 | model->lowest_ibc = lowest_ibc(prop.ibc); | |
2386 | unblocked_ibc = unblocked_ibc(prop.ibc); | |
2387 | } | |
2388 | model->cpu_id = cpuid_id(prop.cpuid); | |
64bc98f4 | 2389 | model->cpu_id_format = cpuid_format(prop.cpuid); |
3b84c25c DH |
2390 | model->cpu_ver = 0xff; |
2391 | ||
2392 | /* get supported cpu features indicated via STFL(E) */ | |
2393 | s390_add_from_feat_block(model->features, S390_FEAT_TYPE_STFL, | |
2394 | (uint8_t *) prop.fac_mask); | |
2395 | /* dat-enhancement facility 2 has no bit but was introduced with stfle */ | |
2396 | if (test_bit(S390_FEAT_STFLE, model->features)) { | |
2397 | set_bit(S390_FEAT_DAT_ENH_2, model->features); | |
2398 | } | |
2399 | /* get supported cpu features indicated e.g. via SCLP */ | |
2400 | rc = query_cpu_feat(model->features); | |
2401 | if (rc) { | |
2402 | error_setg(errp, "KVM: Error querying CPU features: %d", rc); | |
2403 | return; | |
2404 | } | |
2405 | /* get supported cpu subfunctions indicated via query / test bit */ | |
2406 | rc = query_cpu_subfunc(model->features); | |
2407 | if (rc) { | |
2408 | error_setg(errp, "KVM: Error querying CPU subfunctions: %d", rc); | |
2409 | return; | |
2410 | } | |
2411 | ||
46a99c9f DH |
2412 | /* PTFF subfunctions might be indicated although kernel support missing */ |
2413 | if (!test_bit(S390_FEAT_MULTIPLE_EPOCH, model->features)) { | |
2414 | clear_bit(S390_FEAT_PTFF_QSIE, model->features); | |
2415 | clear_bit(S390_FEAT_PTFF_QTOUE, model->features); | |
2416 | clear_bit(S390_FEAT_PTFF_STOE, model->features); | |
2417 | clear_bit(S390_FEAT_PTFF_STOUE, model->features); | |
2418 | } | |
2419 | ||
07059eff DH |
2420 | /* with cpu model support, CMM is only indicated if really available */ |
2421 | if (kvm_s390_cmma_available()) { | |
2422 | set_bit(S390_FEAT_CMM, model->features); | |
6da5c593 JH |
2423 | } else { |
2424 | /* no cmm -> no cmm nt */ | |
2425 | clear_bit(S390_FEAT_CMM_NT, model->features); | |
07059eff DH |
2426 | } |
2427 | ||
b073c875 CB |
2428 | /* bpb needs kernel support for migration, VSIE and reset */ |
2429 | if (!kvm_check_extension(kvm_state, KVM_CAP_S390_BPB)) { | |
2430 | clear_bit(S390_FEAT_BPB, model->features); | |
2431 | } | |
2432 | ||
572c0826 CB |
2433 | /* |
2434 | * If we have support for protected virtualization, indicate | |
2435 | * the protected virtualization IPL unpack facility. | |
2436 | */ | |
2437 | if (cap_protected) { | |
2438 | set_bit(S390_FEAT_UNPACK, model->features); | |
2439 | } | |
2440 | ||
e23bc1b2 | 2441 | /* We emulate a zPCI bus and AEN, therefore we don't need HW support */ |
09ced81a | 2442 | set_bit(S390_FEAT_ZPCI, model->features); |
3b00f702 YMZ |
2443 | set_bit(S390_FEAT_ADAPTER_EVENT_NOTIFICATION, model->features); |
2444 | ||
3b84c25c DH |
2445 | if (s390_known_cpu_type(cpu_type)) { |
2446 | /* we want the exact model, even if some features are missing */ | |
2447 | model->def = s390_find_cpu_def(cpu_type, ibc_gen(unblocked_ibc), | |
2448 | ibc_ec_ga(unblocked_ibc), NULL); | |
2449 | } else { | |
2450 | /* model unknown, e.g. too new - search using features */ | |
2451 | model->def = s390_find_cpu_def(0, ibc_gen(unblocked_ibc), | |
2452 | ibc_ec_ga(unblocked_ibc), | |
2453 | model->features); | |
2454 | } | |
2455 | if (!model->def) { | |
2456 | error_setg(errp, "KVM: host CPU model could not be identified"); | |
2457 | return; | |
2458 | } | |
1d7db85b TK |
2459 | /* for now, we can only provide the AP feature with HW support */ |
2460 | if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, | |
2461 | KVM_S390_VM_CRYPTO_ENABLE_APIE)) { | |
2462 | set_bit(S390_FEAT_AP, model->features); | |
2463 | } | |
1ecd6078 CW |
2464 | |
2465 | /* | |
2466 | * Extended-Length SCCB is handled entirely within QEMU. | |
2467 | * For PV guests this is completely fenced by the Ultravisor, as Service | |
2468 | * Call error checking and STFLE interpretation are handled via SIE. | |
2469 | */ | |
2470 | set_bit(S390_FEAT_EXTENDED_LENGTH_SCCB, model->features); | |
2471 | ||
3ded270a | 2472 | if (kvm_check_extension(kvm_state, KVM_CAP_S390_DIAG318)) { |
fabdada9 CW |
2473 | set_bit(S390_FEAT_DIAG_318, model->features); |
2474 | } | |
2475 | ||
3b84c25c DH |
2476 | /* strip of features that are not part of the maximum model */ |
2477 | bitmap_and(model->features, model->features, model->def->full_feat, | |
2478 | S390_FEAT_MAX); | |
2479 | } | |
2480 | ||
1d7db85b TK |
2481 | static void kvm_s390_configure_apie(bool interpret) |
2482 | { | |
2483 | uint64_t attr = interpret ? KVM_S390_VM_CRYPTO_ENABLE_APIE : | |
2484 | KVM_S390_VM_CRYPTO_DISABLE_APIE; | |
2485 | ||
2486 | if (kvm_vm_check_attr(kvm_state, KVM_S390_VM_CRYPTO, attr)) { | |
2487 | kvm_s390_set_attr(attr); | |
2488 | } | |
2489 | } | |
2490 | ||
3b84c25c DH |
2491 | void kvm_s390_apply_cpu_model(const S390CPUModel *model, Error **errp) |
2492 | { | |
2493 | struct kvm_s390_vm_cpu_processor prop = { | |
2494 | .fac_list = { 0 }, | |
2495 | }; | |
2496 | struct kvm_device_attr attr = { | |
2497 | .group = KVM_S390_VM_CPU_MODEL, | |
2498 | .attr = KVM_S390_VM_CPU_PROCESSOR, | |
2499 | .addr = (uint64_t) &prop, | |
2500 | }; | |
2501 | int rc; | |
2502 | ||
2503 | if (!model) { | |
07059eff | 2504 | /* compatibility handling if cpu models are disabled */ |
03f47ee4 | 2505 | if (kvm_s390_cmma_available()) { |
07059eff DH |
2506 | kvm_s390_enable_cmma(); |
2507 | } | |
3b84c25c DH |
2508 | return; |
2509 | } | |
2510 | if (!kvm_s390_cpu_models_supported()) { | |
2511 | error_setg(errp, "KVM doesn't support CPU models"); | |
2512 | return; | |
2513 | } | |
2514 | prop.cpuid = s390_cpuid_from_cpu_model(model); | |
2515 | prop.ibc = s390_ibc_from_cpu_model(model); | |
2516 | /* configure cpu features indicated via STFL(e) */ | |
2517 | s390_fill_feat_block(model->features, S390_FEAT_TYPE_STFL, | |
2518 | (uint8_t *) prop.fac_list); | |
2519 | rc = kvm_vm_ioctl(kvm_state, KVM_SET_DEVICE_ATTR, &attr); | |
2520 | if (rc) { | |
2521 | error_setg(errp, "KVM: Error configuring the CPU model: %d", rc); | |
2522 | return; | |
2523 | } | |
2524 | /* configure cpu features indicated e.g. via SCLP */ | |
2525 | rc = configure_cpu_feat(model->features); | |
2526 | if (rc) { | |
2527 | error_setg(errp, "KVM: Error configuring CPU features: %d", rc); | |
2528 | return; | |
2529 | } | |
2530 | /* configure cpu subfunctions indicated via query / test bit */ | |
2531 | rc = configure_cpu_subfunc(model->features); | |
2532 | if (rc) { | |
2533 | error_setg(errp, "KVM: Error configuring CPU subfunctions: %d", rc); | |
2534 | return; | |
2535 | } | |
03f47ee4 | 2536 | /* enable CMM via CMMA */ |
07059eff | 2537 | if (test_bit(S390_FEAT_CMM, model->features)) { |
03f47ee4 | 2538 | kvm_s390_enable_cmma(); |
07059eff | 2539 | } |
1d7db85b TK |
2540 | |
2541 | if (test_bit(S390_FEAT_AP, model->features)) { | |
2542 | kvm_s390_configure_apie(true); | |
2543 | } | |
3b84c25c | 2544 | } |
eabcea18 DH |
2545 | |
2546 | void kvm_s390_restart_interrupt(S390CPU *cpu) | |
2547 | { | |
2548 | struct kvm_s390_irq irq = { | |
2549 | .type = KVM_S390_RESTART, | |
2550 | }; | |
2551 | ||
2552 | kvm_s390_vcpu_interrupt(cpu, &irq); | |
2553 | } | |
2554 | ||
2555 | void kvm_s390_stop_interrupt(S390CPU *cpu) | |
2556 | { | |
2557 | struct kvm_s390_irq irq = { | |
2558 | .type = KVM_S390_SIGP_STOP, | |
2559 | }; | |
2560 | ||
2561 | kvm_s390_vcpu_interrupt(cpu, &irq); | |
2562 | } | |
92a5199b TL |
2563 | |
2564 | bool kvm_arch_cpu_check_are_resettable(void) | |
2565 | { | |
2566 | return true; | |
2567 | } |